CN204161169U - Child seat - Google Patents

Abstract

The utility model provides a child seat with higher impact resistance. The child seat (1) is mounted on a seat of a vehicle through a seat belt device including a seat belt, an armature having a tongue plate inserted into the seat belt, A buckle capable of snapping and disengaging the tongue plate, the child seat (1) has an engaging protrusion (27) or engaging groove engaged with an armature or a buckle (91) when mounted on a vehicle seat .

Description

child seat

technical field

The utility model relates to a child seat installed on a vehicle seat.

Background technique

There is known a child seat (Patent Document 1) that is used when an infant rides in a car or the like, and has a load seat mounted on a seat of a vehicle (such as a car) and a slidable The seat body supported on the bearing seat.

Generally, the child seat is fixed on the vehicle as a whole by using a seat safety belt device provided on the vehicle seat to fix the carrier base on the vehicle seat. The seat belt device includes a seat belt, an armature having a tongue inserted into the seat belt, and a tongue buckle that can be attached. The seat belt is a belt-shaped member that is soft so as not to injure a user who wears the belt and is formed of a high-strength material. On the other hand, the armature and the buckle are rigid members made of metal, hard plastic, or the like.

Therefore, when the main body of a child seat with or without a bearing seat is fixed with a seat belt device, in order to prevent the armature and the buckle as a rigid body from interfering with the bearing seat, the corresponding parts are, for example, covered. formed in a concave shape. In other words, the conventional child seat is fixed to the seat of the vehicle only by the seat belt of the seat belt device.

prior art literature

patent documents

Patent Document 1: Japanese Patent Laid-Open No. 2010-012895

Contents of utility models

Problems to be solved by utility models

However, child seats are required to have high impact resistance for the purpose of protecting infants and young children from the impact applied to the vehicle at the time of a collision. This impact resistance can be improved by firmly mounting the child seat on the vehicle.

The purpose of the utility model is to provide a child seat with higher impact resistance.

method used to solve the problem

According to one aspect of the present invention, there is provided a child seat that is mounted on a vehicle seat through a seat belt device having a seat belt, a An armature of a tongue plate of a seat belt, and a buckle capable of fastening and disengaging the tongue plate, and the child seat is characterized in that it has an engaging mechanism for engaging with the armature or the buckle when it is mounted on a vehicle seat. protrusions or snap slots.

In addition, according to another aspect of the present invention, there is provided a child seat characterized in that the engaging protrusion or the engaging groove is arranged on the rear side with respect to the armature or the buckle.

In addition, according to another aspect of the present invention, a child seat is provided, wherein the engaging protrusion or the engaging groove is arranged on the left and right sides of the child seat.

In addition, according to another aspect of the present invention, a child seat is provided, wherein the engaging protrusion or the engaging groove is an engaging protrusion of a split component.

In addition, according to another aspect of the present invention, there is provided a child seat, which is characterized in that it further includes a bearing seat and a seat body supporting the bearing seat, and the engaging protrusion or the engaging groove set on the bearing seat.

The effect of utility model

According to the utility model, the shared effect of providing a child seat with higher impact resistance is achieved.

Description of drawings

FIG. 1 is a perspective view schematically showing the whole of a child seat according to an embodiment of the present invention.

Fig. 2 is a perspective view of the child seat facing forward.

Fig. 3 is a perspective view of the child seat facing backward.

Fig. 4 is a perspective view of the bearing seat of the child seat.

FIG. 5 is a top view of the bearing seat of FIG. 4 .

Fig. 6 is an exploded perspective view of a part of the child seat.

7 is a perspective view of the bottom surface of the seat body of the child seat.

8 is a perspective view of an engaging portion and an engaged portion of the child seat.

Fig. 9 is a longitudinal sectional view passing through the center of the child seat in the transverse direction.

Fig. 10 is an enlarged vertical cross-sectional view of the child seat on the left side of the horizontal center.

Fig. 11 is an enlarged perspective view of the inside of a seat main body of the child seat.

Fig. 12 is a diagram illustrating a tilting mechanism and a rotating mechanism of the child seat.

Fig. 13 is another diagram illustrating a tilting mechanism and a rotating mechanism of the child seat.

14( a ) to ( d ) are diagrams illustrating the tilting operation of the child seat.

15( a ) to ( d ) are diagrams for explaining the rotating operation of the child seat.

Fig. 16 is a diagram illustrating an operating mechanism of a child seat.

Fig. 17 is another diagram explaining the operating mechanism of the child seat.

Fig. 18 is another diagram for explaining the operation mechanism of the child seat.

Fig. 19 is an enlarged perspective view of the rear of the child seat.

Fig. 20 is an exploded assembly view of a part of the height adjustment mechanism of the child safety belt of the child seat.

21( a ) to ( c ) are diagrams illustrating a height adjustment mechanism of an infant seat belt of a child seat.

22( a ) to ( c ) are other diagrams illustrating the height adjustment mechanism of the child seat belt of the child seat.

Fig. 23 is a perspective view showing the seat belt adjustment in the highest position of the child seat.

Fig. 24 is a perspective view showing the adjustment of the seat belt in the lowest position of the child seat.

Fig. 25 is an enlarged perspective view of the rear of the child seat.

Figure 26 is a perspective view of the rear panel of the child seat.

Figure 27 is a top view of a portion of an infant safety belt.

28 is a side view of the child safety belt of FIG. 1 in an extended state.

Fig. 29 is a side view of the child safety belt of Fig. 1 in a bent state.

Fig. 30 is a front view of the child safety belt of the child seat.

Figure 31 is a perspective view of the upper portion of the child seat.

Fig. 32 is an exploded assembly view of the rotation locking mechanism of the canopy mechanism of the child seat.

Fig. 33 is a perspective view of the positioning mechanism of the supporting legs of the child seat.

Fig. 34 is a longitudinal sectional view of the positioning mechanism in Fig. 33 to the left of the center.

Fig. 35 is a longitudinal sectional view through the center of the positioning mechanism of Fig. 33 .

Detailed ways

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Throughout the drawings, common reference signs are assigned to corresponding constituent elements.

FIG. 1 is a perspective view schematically showing the entirety of a child seat 1 according to an embodiment of the present invention, FIG. 2 is a perspective view of the child seat 1 facing forward, and FIG. 3 is a perspective view of the child seat 1 facing backward. A stereogram of the state.

The child seat 1 has a child seat body 10 and support legs 100 attached to the child seat body 10 so as to be detachable from the child seat body 10 . The child seat body 10 has a seat 20 attached to a seat of a vehicle (for example, an automobile), and a seat body 30 slidably supported by the seat 20 . In addition, although the seat main body 30 including the seating surface etc. of the child seat 1 is covered with the cushioning cover 11 as shown in FIG. omitted.

In this specification, in the description of each component, when the child seat 1 is installed on the vehicle seat, the front in the direction of travel of the vehicle is defined as "front", and the opposite side is defined as "front". back". In addition, the state of the seat body 30 shown in FIG. 1 and FIG. "Rearward facing state". In particular, when describing the seat main body 30 , the front when viewed from the seated infant may be referred to as "front", and the opposite side may be referred to as "rear". Also, the "right" side and the "left" side are determined with respect to the "front" side.

The seat body 30 is selectively rotatable with respect to the pedestal 20 between a state facing forward ( FIGS. 1 and 2 ) and a state facing backward ( FIG. 3 ) by a rotation mechanism described later. In addition, the seat body 30 can be tilted by selecting a plurality of tilting positions by changing an inclination angle with respect to the pedestal 20 by a tilting mechanism described later.

Referring to FIG. 4 and FIG. 5 , the bearing seat 20 will be described. FIG. 4 is a perspective view of the bearing seat 20 of the child seat 1 , and FIG. 5 is a top view of the bearing seat 20 . The pedestal 20 has a base 21 formed hollow as a whole and mounted on the seat of the vehicle seat, and a standing portion 22 extending upward from the rear of the base 21 and facing the back of the vehicle seat. The mounting base 20 is formed by molding hard plastic such as polypropylene into upper and lower halves or left and right halves and fitting them together, but is not limited thereto.

On the upper surface of the base portion 21 , a substantially elliptical opening extending in the front-rear direction, that is, a main body storage opening 23 is formed for housing the lower portion of the seat main body 30 . At the periphery of the main body accommodation opening 23 , a supporting wall 23 a extending downward by a predetermined length is formed in a ring shape along the shape of the main body accommodation opening 23 . On the upper surface of the base 21 around the main body receiving opening 23, there is formed a seat supporting surface 24 on the upper surface of the base 21 and gradually inclined toward the center. On the surface of the susceptor support surface 24, a plurality of convexly curved protrusions 24a arranged in a row are formed. In the main body receiving opening 23 , that is, inside the bottom surface of the base 21 , a cylindrically curved surface 25 protruding from the bottom surface is formed, and the cylindrically curved surface 25 is exposed through the main body receiving opening 23 on the upper surface of the base 21 .

The cylindrical curved surface 25 is a concave curved surface composed of a part of the cylindrical surface whose central axis extends in the left-right direction, that is, in the lateral direction, and the rear end is arranged higher than the front end ( FIG. 9 ). In the cylindrical curved surface 25 , three locking holes 25 a are formed at equal intervals so as to line up in the front-rear direction on a center line H passing through the center in the lateral direction of the child seat 1 . Further, a pair of lock grooves 25b extending in the front-rear direction are formed on the cylindrical curved surface 25 on left and right parallel lines offset laterally from the central line H.

A pair of elongated guide grooves 22b penetrating toward the interior space and extending in the front-rear direction are formed on the frontward slope 22a formed in the middle of the upright portion 22 of the carrier 20 . As will be described later, the guide groove 22b guides the sliding of the upper link 43 in the front-rear direction and restricts the movement in the lateral direction. In addition, a rectangular opening 26 ( FIG. 3 ) is formed on an upper front surface 22 c of the standing portion 22 of the mounting base 20 . As will be described later, belt engaging protrusions 27 protruding in the lateral direction are formed at the left and right rear portions of the base portion 21 of the pedestal 20 , that is, the left and right lower portions of the standing portion 22 of the pedestal 20 .

The seat main body 30 will be described with reference to FIGS. 6 and 7 . FIG. 6 is an exploded perspective view of a part of the child seat 1 , and FIG. 7 is a perspective view of the bottom surface of the seat body 30 of the child seat 1 .

The seat body 30 has a seat lower portion 31 and a backrest portion 32 extending upward from the rear of the seat lower portion 31 . The seat body 30 is formed by integrally molding hard plastic such as polypropylene, but is not limited thereto. The appearance of the lower seat portion 31 is formed by a truncated conical portion 31a tapering toward the lower end and a smaller diameter cylindrical portion 31b extending downward from the lower surface of the truncated cone portion 31a. The lower end of the cylindrical portion 31 b is closed by the circular seat bottom surface 33 . A circular opening 33 a is formed at the center of the seat bottom surface 33 , and two circular openings 33 b are formed on a line shifted leftward from the center of the circular opening 33 a of the seat bottom surface 33 .

On the front surface of the backrest part 32, a headrest 60 (FIG. 2) is attached which is bent forward from the left and right and functions as a headrest. As will be described later, the position of the head pad 60 can be adjusted by sliding in the up and down direction with respect to the backrest portion 32 . In addition, the head pad 60 is formed by integrally molding hard plastic such as polypropylene, but is not limited thereto.

The engaging portion and the engaged portion of the child seat 1 will be described with reference to FIG. 6 , FIG. 8 , FIG. 9 , and FIG. 10 . 8 is a perspective view of the engaging portion and the engaged portion of the child seat 1, FIG. 9 is a longitudinal sectional view of the child seat 1 passing through the center in the transverse direction (left-right direction), and FIG. Enlarged longitudinal sectional view than to the left.

On the lower surface of the seat main body 30 , that is, the outer surface of the seat bottom surface 33 , a disc-shaped lower engaged guide member 40 is integrally attached as an engaged portion. The diameter d of the lower engaged guide member 40 is larger than the diameter of the cylindrical portion 31b. In particular, referring to FIG. 10 , an annular engaging groove 40 a is formed near the outer peripheral edge of the lower surface of the lower engaged guide member 40 . One end of the lower connecting rod 41 is engaged from below as an engaging portion with the engaging groove 40 a of the lower engaged guide member 40 . That is, the lower connecting rod 41 has an engaging hook 41a bent upward in a hook shape at one end thereof. In addition, the lower engaged guide member 40 is formed by integrally molding hard plastic such as polypropylene, but is not limited thereto.

The other end portion 41b ( FIG. 10 ) of the lower connecting rod 41 is connected to the lower portion of the rod connecting member 42 . The rod connecting member 42 is formed into a shape conforming to the upper rear corner of the inner space of the base 21 by integrally molding, for example, polyoxymethylene, but is not limited thereto. As shown in FIG. 9 , in a state where the lower engaged guide member 40 is arranged rearmost by a tilting mechanism described later, the rod connecting member 42 abuts against the inner wall of the base 21 and fits into the inner space. The upper rear corner. As a result, when the lower engaged guide member 40 is moved to the rearmost position by the tilting mechanism, that is, when the seat body 30 is tilted in a more upright state, the rod connecting member 42 and the base portion The seat body 30 functions as a shock absorbing member that absorbs impact when the seat body 30 moves. In addition, the lower connecting rod 41 is curved along the shape of the inner wall so as not to interfere with the inner wall of the base 21 in this state.

A pair of upper connecting rods 43 are connected as engaging portions on the left and right of the upper part of the rod connecting member 42 . Each of the upper connecting rods 43 protrudes outward via a guide groove 22b formed in the upright portion 22 of the bearing seat 20 ( FIG. 10 ). The portion of the upper connecting rod 43 protruding outward is formed of a straight portion extending upward, a semicircular portion bent forward from the top of the straight portion, and a straight portion extending slightly downward from the top of the semicircular portion. That is, the portion of the upper connecting rod 43 protruding outward has a hook shape in which the letter "J" is turned upside down.

On the outer conical surface of the truncated cone portion 31 a of the seat body 30 , an annular upper engaged guide member 44 is attached as an engaged portion. The upper engaged guide member 44 has a cylindrical guide wall 44 a extending upward along its annular shape. As shown in FIG. 8 , on the guide wall 44 a of the upper engaged guide member 44 , respective distal ends of the upper connecting rod 43 are engaged from above. In addition, at the lower part of the outer peripheral surface of the upper to-be-engaged guide member 44, a convex curved surface formed in an annular shape, that is, a collision support surface 44b is formed. The upper engaged guide member 44 is formed by integrally molding hard plastic such as polypropylene, but is not limited thereto.

In addition, the upper engaged guide member 44 may have a reinforcing member 44c made of metal such as carbon steel in order to reinforce the guide wall 44a during the engagement between the upper connecting rod 43 and the guide wall 44a. The reinforcing member 44c may be arranged over the entire circumference of the guide wall 44a, or may be arranged so as to engage with the seat body 30 in the forward-facing state and the rear-facing state as shown in FIG. 6 .

The upper engaged guide member 44 is covered from above by an annular cover member 45 so that the guide wall 44a is not exposed to the outside ( FIG. 6 ). The upper to-be-engaged guide member 44 is rotatable while being covered by the cover member 45 . Through-holes 45 a are formed at corresponding positions in the cover member 45 so that respective tips of the upper connecting rod 43 can engage with the guide walls 44 a of the upper engaged guide member 44 via the cover member 45 . In addition, the protective cover 46 covers the upper connecting rod 43 from above so that the upper connecting rod 43 is not exposed to the outside. The protective cover 46 is attached to the cover member 45 . In addition, in FIG. 10 , illustration of the cover member 45 and the protective cover 46 is omitted.

The cover member 45 is formed by integrally molding acrylonitrile, butadiene, styrene, etc., but is not limited thereto. In addition, although the protective cover 46 is integrally formed by hard plastics, such as polypropylene, it is not limited to this. The lower connecting rod 41 and the upper connecting rod 43 are formed of metal such as carbon steel, but are not limited thereto.

The internal mechanism related to the tilt mechanism and the rotation mechanism will be described in detail with reference to FIG. 6 , FIG. 9 , FIG. 10 and FIG. 11 . FIG. 11 is an enlarged perspective view of the inside of the seat body 30 of the child seat 1 . The upper portion of the seat lower portion 31 of the seat body 30 is covered by a seat cushion 34 forming a seat portion on which an infant sits, and the seat cushion 34 defines an internal space 35 therebelow.

A circular opening 40b of the same diameter is formed at the center of the lower engaged guide member 40 corresponding to the central circular opening 33a of the seat bottom surface 33 of the seat body 30 ( FIG. 6 ). A cylindrical tilt lock pin 50 is inserted into the circular opening 33 a of the seat bottom surface 33 and the circular opening 40 b of the lower engaged guide member 40 from the interior space 35 side of the seat body 30 . The tip of the tipping lock pin 50 protruding downward from the lower surface of the lower engaged guide member 40 is inserted into and engaged with one of the locking holes 25 a formed in the cylindrical curved surface 25 of the base 20 .

In addition, on the line where the center of the circular opening 40b of the lower engaged guide member 40 corresponding to the two circular openings 33b of the seat bottom surface 33 of the seat main body 30 deviates to the left, two circular openings are formed. Circular opening 40c (FIG. 6). A U-shaped rotation lock pin 51 is inserted into the two circular openings 33 b of the seat bottom surface 33 and the two circular openings 40 c of the lower engaged guide member 40 from the inner space 35 side of the seat body 30 . each of the tops. The top ends of the rotation lock pins 51 protruding downward from the lower surface of the lower engaged guide member 40 are inserted into and engaged with one of the lock grooves 25 b formed in the cylindrical curved surface 25 of the holder 20 .

Therefore, the offset amount of the line of two circular openings 33 b from the center of the circular opening 33 a of the seat bottom surface 33 and the line of the two circular openings 40 c from the circular opening 40 b of the lower engaged guide member 40 The offset amount of the center of the bearing seat 20 is set to be equal to the offset amount from the central line H of the lock groove 25b formed in the cylindrical curved surface 25 of the bearing seat 20 .

11, on the inner surface of the seat bottom surface 33 of the seat body 30, that is, the bottom surface of the interior space 35, a first guide protrusion 33c and a second guide protrusion 33c protruding upward and having a rectangular cross section are formed. Protrusion 33d. The first guide protrusion 33c is arranged on the right side, and the second guide protrusion 33d is arranged on the left side. The first guide protrusion 33c and the second guide protrusion 33d are slightly tapered upward.

The first pin holding member 52 is vertically slidably attached to the first guide protrusion 33c, and the second pin holding member 53 is vertically slidably attached to the second guide protrusion 33d. That is, a corresponding rectangular opening for receiving the first guide protrusion 33 c is formed on the first pin holding member 52 , and a corresponding rectangular opening for receiving the second guide protrusion 33 d is formed on the second pin holding member 53 . The first pin holding member 52 holds the tilt lock pin 50 , and the second pin holding member 53 holds the rotation lock pin 51 . The first pin holding member 52 is biased downward by the coil spring 54a, and the second pin holding member 53 is biased downward by the coil spring 54b.

An operating mechanism is installed at a front portion of the upper surface of the seat lower portion 31 of the seat main body 30 . The operating mechanism has a console 55 . On the right side of the console 55, a tilting operation handle 55a for operating the tilting mechanism is attached as a first operating portion so as to be slidable in the front-rear direction. Moreover, on the left side of the console 55, the rotation operation handle 55b which operates a rotation mechanism is attached so that sliding in the front-back direction is possible as a 2nd operation part. The first pin holding member 52 is connected to the dump operation handle 55a via an operation lever 56a extending obliquely upward. Moreover, the 2nd pin holding member 53 is connected to the rotation operation handle 55b via the operation lever 56b extended obliquely upward.

When the tilting operation handle 55a is pulled forward, the first pin holding member 52 is slid upward along the first guide protrusion 33c via the operation lever 56a. As a result, the tilt lock pin 50 held by the first pin holding member 52 also moves upward, and the engagement between the tip end of the tilt lock pin 50 and the lock hole 25 a is released. As a result, the tilting operation of the seat body 30 becomes possible.

The tilting operation handle 55a is biased toward the rear position via the operation lever 56a by the biasing force of the coil spring 54a biasing the first pin holding member 52 downward. Therefore, if the tilting operation handle 55a is released after the tilting operation, the tilting operation handle 55a will be restored to the rear position by the force of the coil spring 54a, and the tip of the tilting lock pin 50 will be inserted into the locking hole 25a again. middle.

On the other hand, when the rotary operation handle 55b is pulled forward, the second pin holding member 53 is slid upward along the second guide protrusion 33d via the operation lever 56b. As a result, the rotation lock pin 51 held by the second pin holding member 53 is also moved upward, and the engagement between the front ends of the rotation lock pin 51 and the lock groove 25 b is released. As a result, the seat body 30 can be rotated.

The rotary operation handle 55b is biased toward the rear position via the operation lever 56b by the biasing force of the coil spring 54b biasing the second pin holding member 53 downward. Therefore, if the rotation operation handle 55b is released after the rotation operation, the rotation operation handle 55b will be restored to the rear position by the force of the coil spring 54b, and each top end of the rotation lock pin 51 will be inserted into the lock groove again. within 25b.

Referring to FIG. 12 and FIG. 13 , the tilting mechanism and the rotation mechanism of the child seat 1 will be described. FIG. 12 is a diagram illustrating the tilting mechanism and the rotation mechanism of the child seat 1 , and FIG. 13 is another diagram illustrating the tilting mechanism and the rotation mechanism of the child seat 1 . Each structure is schematically shown in FIG. 12 and FIG. 13 .

As described above, the seat body 30 has the lower engaged guide member 40 , the upper engaged guide member 44 , and the cover member 45 . Further, the lower connecting rod 41 and the upper connecting rod 43 connected via the rod connecting member 42 are engaged and connected between the lower engaged guide member 40 and the upper engaged guide member 44 . By making each of the pair of upper connecting rods 43 pass through the corresponding guide groove 22b of the bearing seat 20, and making the rod connecting member 42 abut against the inner surface of the inclined surface 22a of the bearing seat 20, the lower connecting rod 41 And the sliding in the front-rear direction of the upper link 43 is guided and the movement in the lateral direction is restricted.

In FIG. 12 , the seat main body 30 is in a tilted position corresponding to the rear locking hole 25 a among the three locking holes 25 a. That is, in the seat body 30 , the tilting position is fixed by engaging the tilting lock pin 50 protruding downward from the seat body 30 via the lower engaged guide member 40 with the lock hole 25 a.

In addition, the outer surface of the lower seat portion 31 of the seat body 30 is supported by the seat support surface 24 of the seat 20 to bear the load when the infant sits on the seat. The lower engaged guide member 40 and the cylindrical curved surface 25 of the mounting base 20 are arranged so as to be slightly separated from each other. The above-mentioned outer surface of the seat lower portion 31 is slid and supported on the seat support surface 24 of the seat 20 during the tilting operation and the rotating operation of the seat main body 30 . In addition, the lower engaged guide member 40 is slightly separated from the cylindrical curved surface 25 of the pedestal 20 during the tilting operation and the rotating operation of the seat body 30 . In other words, the above-mentioned outer surface of the seat body 30 has a size, shape, etc. determined so that it is always in contact with and supported by the seat support surface 24 , and the lower engaged guide member 40 is slightly separated from the cylindrical curved surface 25 . And determine the size and shape.

The seat body 30 can slide smoothly while reducing frictional resistance by abutting the convexly curved protrusions 24a formed on the seat support surface 24 of the seat 20 in points.

In this state, by releasing the engagement between the rotation lock pin 51 (not shown) and the lock groove 25b, the seat body 30 can be rotated around the rotation axis R substantially coincident with the center axis of the tipping lock pin 50 . Rotational movement. In addition, the tilt lock pin 50 and the rotation lock pin 51 are formed of metal such as carbon steel, but are not limited thereto.

When the seat main body 30 is rotated relative to the bearing base 20, the lower engaged guide member 40 installed on the seat main body 30 will engage the engaging hook 41a of the lower connecting rod 41 on the ring-shaped It rotates together with the seat main body 30 in the state of being in the engaging groove 40a. At this time, since the lateral movement of the lower connecting rod 41 is restricted as described above, it is relatively stationary with respect to the bearing base 20 . Therefore, the engaging hook 41 a of the lower connecting rod 41 is engaged in the annular engaging groove 40 a of the lower engaged guide member 40 and relatively slides.

In addition, when the seat main body 30 is rotated relative to the bearing base 20, the upper engaged guide member 44 mounted on the seat main body 30 will always align the top ends of the upper connecting rod 43 with the cylindrical end. The guide wall 44a rotates together with the seat main body 30 in the engaged state. At this time, the upper connecting rod 43 is relatively stationary relative to the bearing seat 20 . Therefore, the respective distal ends of the upper connecting rod 43 are always engaged and relatively slid along the cylindrical guide wall 44 a of the upper engaged guide member 44 .

The cover member 45 covering the upper engaged guide member 44 and the protective cover 46 covering the upper connecting rod 43 are relatively stationary with respect to the carrier base 20 together with the upper connecting rod 43 . That is, the cover member 45 maintains the state of covering the upper engaged guide member 44 when the upper engaged guide member 44 rotates with the rotation of the seat body 30 , and the cover member 45 itself does not rotate.

FIG. 13 illustrates a state when the seat body 30 is tilted relative to the pedestal 20 from the rear tilting position shown in FIG. 12 to the front tilting position. That is, from the state shown in FIG. 12 , the engagement between the tilt lock pin 50 and the rear lock hole 25 a is released, and the seat body 30 is slid forward along the pedestal support surface 24 . Then, the tilting position is fixed by engaging the tilting lock pin 50 with the front locking hole 25a.

The lower connecting rod 41 and the upper connecting rod 43 connecting the lower engaged guide member 40 and the upper engaged guiding member 44 of the seat main body 30 follow the tilting motion of the seat main body 30 along the seat. The guide groove 22b of 20 slides in the front-rear direction. Therefore, although the seat body 30 is tilted and rotated along the pedestal 20 , the lower connecting rod 41 and the upper connecting rod 43 connected via the rod connecting member 42 engage and guide the lower portion of the seat body 30 . The member 40 and the upper to-be-engaged guide member 44 are connected while maintaining the relative positional relationship with the seat main body 30 while being always engaged.

In addition, of course, the seat body 30 may also be in the tilted position corresponding to the central locking hole 25a. Even when the seat body 30 is in the tilted position corresponding to the central lock hole 25a and the tilted position corresponding to the front lock hole 25a, rotation around the center axis of the tilt lock pin 50 is possible. The rotational movement of the seat body 30 along the axis R.

Referring to FIGS. 14( a ) to 15 ( d ) and FIGS. 15( a ) to ( d ), the tilting operation and the rotating operation of the child seat 1 will be described. 14( a ) to ( d ) are diagrams illustrating the tilting operation of the child seat 1 , and ( a ) to ( d ) of FIG. 14 illustrate the tilting operation in time series. In addition, FIG.15(a)-(d) is a figure explaining the rotation operation of the child seat 1, and FIG.15(a)-(d) has shown rotation operation in time series.

In each figure of Fig. 14 (a) ~ (d) and Fig. 15 (a) ~ (d), three locking holes 25a, two locking grooves 25b, dumping locking pin 50, The lock pin 51, the tilting operation handle 55a, and the rotation operation handle 55b are rotated. In addition, the cylindrical curved surface 25 which is a concave curved surface is schematically shown as a horizontal surface. In each of FIGS. 14(a) to (d) and FIGS. 15(a) to (d), the left side is defined as the front side of the child seat 1, and the right side is defined as the rear side of the child seat 1. . In addition, in each figure of FIG. 14(a)-(d) and FIG. 15(a)-(d), the upper figure schematically shows the sectional view of XX including the lower figure. The upper view and the lower view schematically show a view from the side as a cross-sectional view including line YY in the upper view, that is, a line along the left locking groove 25b.

When describing the tilting operation, FIG. 14( a ) shows the forward-facing state of the seat body 30 and the state when the tilting operation handle 55 a and the rotation operation handle 55 b are not operated. The tilting lock pin 50 is engaged with the central lock hole 25a among the three, and the rotation lock pin 51 is engaged with the left lock groove 25b. FIG. 14( b ) shows the state when the tilt operation handle 55 a is pulled forward, and also shows the state when the tilt lock pin 50 moves upward and the engagement with the lock hole 25 a is released.

FIG. 14( c ) shows a state when the seat body 30 is slid forward while the tilting operation handle 55 a is pulled forward. That is, this operation is a tilting operation of tilting the seat body 30 relative to the pedestal 20 . During the pouring operation, the rotation lock pin 51 is engaged with the lock groove 25b. FIG. 14( d ) shows an operation of fixing the seat body 30 to the pedestal 20 after the seat body 30 is slid forward, that is, after it is tilted. That is, when the tilting operation handle 55a is released, the tilting operation handle 55a is returned to the rear position, and the tilting lock pin 50 is inserted into and engaged with the front lock hole 25a.

When describing the rotation operation, FIG. 15( a ) shows the forward-facing state of the seat body 30 and the state when the tilting operation handle 55 a and the rotation operation handle 55 b are not operated. The tilting lock pin 50 is engaged with the central lock hole 25 a among three aligned in the front-rear direction, and the rotation lock pin 51 is engaged with the left lock groove 25 b. Fig. 15(b) shows the state when the rotary operation handle 55b is pulled forward, and shows the state when the rotation lock pin 51 moves upward and the engagement with the lock groove 25b is released.

FIG. 15( c ) illustrates a state when the seat body 30 is rotated 180 degrees around the rotation axis R of the tilting lock pin 50 while the tilting operation handle 55 a is pulled forward. That is, this operation is a rotation operation of rotating the seat main body 30 relative to the pedestal 20 and changing the seat main body 30 from the state facing forward to the state facing backward. During the rotation operation, the tilting lock pin 50 engages with the lock hole 25a. FIG. 15( d ) shows an operation of fixing the seat body 30 with respect to the pedestal 20 after the seat body 30 is rotated. That is, when the rotary operation handle 55b is released, the rotary operation handle 55b returns to the rear position, and the rotation lock pin 51 is inserted into and engaged with the other lock groove 25b.

Summarizing the tilting mechanism and the rotating mechanism of the child seat 1 , the child seat 1 has a seat 20 as an engaging portion and a seat body as an engaged portion that engages with the engaging portion. 30. The bearing seat 20 has a lower connecting rod 41 and an upper connecting rod 43. The seat body 30 has a lower engaged guiding part 40 and an upper engaged guiding part 44. When changing the seat main body 30 and when the seat body 30 is rotated, the engagement between the engaging portion and the engaged portion is maintained. That is, the relative positional relationship of these components is always fixed. Therefore, the child seat 1 can be connected to the seat body with respect to the pedestal 20 by a simple mechanism with fewer parts and smaller parts than a conventional child seat having a tilting mechanism and a rotating mechanism. 30 makes the seat body fall regardless of the rotational position.

In addition, since the tilting mechanism and the rotating mechanism are arranged at the lower part of the child seat 1, that is, the seat lower part 31 and the lower part of the standing part 22 of the pedestal 20, when the seat body 30 is tilted and rotated, Therefore, the seat main body 30 is stably supported with respect to the pedestal 20, and as a result, it can be operated stably. In addition, since the tilting mechanism and the rotation mechanism are disposed under the standing portion 22 of the mounting base 20 , the upper portion of the rising portion 22 of the mounting base 20 can be freely used.

In addition, since the tilting mechanism and the rotating mechanism are not exposed to the outside during the tilting operation and the rotating operation of the seat body 30, fingers and the like are not caught, so the safety is excellent, and the appearance is also good.

In addition, in the child seat 1, the tilting lock pin 50 and the rotation lock pin 51 are each formed as a separate member and are operated independently. Compared with the case where the tilting operation and the rotating operation are selected according to the protrusion amount of the lock pin, reliable and stable operation can be performed by a simple mechanism. In addition, since it is not necessary to change the amount of protrusion according to the desired operation, compared with the child seat described in Patent Document 1, the processing accuracy and assembly accuracy of the parts of the tilting mechanism and the rotating mechanism are not strict. In order to reduce component cost and manufacturing cost.

In addition, as long as the engagement between the pedestal 20 and the seat body 30 can be maintained during the tilting operation and the rotating operation, the engaging portion and the engaged portion can be configured arbitrarily. For example, the bearing base 20 may have only one of the lower engaged guide member 40 and the upper engaged guide member 44, and the seat body 30 has the corresponding lower connecting rod 41 and upper connecting rod. One of 43. The lower engaged guide member 40 may not be in the shape of a disc, but may be in the shape of a ring or a polygon. The lower engaged guide member 40 and the upper engaged guide member 44 may be integrally formed with the seat body 30 .

As a connecting member between the lower engaged guide member 40 and the upper engaged guide member 44 , the lower connecting rod 41 , the rod connecting member 42 , and the upper connecting rod 43 may be integrally formed. In addition, although the lower connecting rod 41 , the rod connecting member 42 and the upper connecting rod 43 are located behind the child seat 1 of the seat body 30 , that is, on the side of the standing part 22 of the carrier seat 20 , the lower part is engaged with the guiding member 40 and the upper part. The engaged guide member 44 is engaged, but other arrangements are possible as long as the forward and backward movement corresponding to the tilting operation of the seat body 30 is possible.

Although three locking holes 25a are formed on the cylindrical curved surface 25 of the bearing seat 20, there may be two or more than four. That is, the number of pouring positions corresponding to the number of locking holes 25a may be set to any number, and these positions may not be equally spaced. In addition, although a pair of locking grooves 25b are formed parallel to the central line H on the cylindrical curved surface 25 of the base 20, the locking grooves may be formed at any angle with respect to the central line H, for example, perpendicularly. That is, in addition to the forward-facing state and the rearward-facing state of the seat body 30 , a laterally-facing state in which the infant or toddler faces laterally may also be used. Even in this laterally facing state, the tilting operation can be performed by providing a plurality of locking holes in the lateral direction.

However, as described above, in the child seat 1, the seat body 30 can be tilted by pulling the tilting operation handle 55a, and the seat body 30 can be rotated by pulling the rotation operation handle 55b. Assuming that these tilting motions and swiveling motions can be performed simultaneously, the seat body 30 will draw a complicated and unpredictable trajectory, and there is a possibility of collision with the operator. Therefore, the child seat 1 is configured such that the tilting operation and the rotating operation cannot be performed simultaneously.

Referring to Fig. 16 to Fig. 18, the operation mechanism of the pouring operation handle 55a and the rotation operation handle 55b will be described. FIG. 16 is a diagram illustrating the operation mechanism of the child seat 1 , FIG. 17 is another diagram illustrating the operation mechanism of the child seat 1 , and FIG. 18 is another diagram illustrating the operation mechanism of the child seat 1 . In FIGS. 16 to 18 , the upper part is the rear of the seat main body 30 , and the lower part is the front of the seat main body 30 .

The operation switch 57 is a thick plate-shaped member, and is formed in a shape having curved side surfaces, for example, a crescent shape or a dart shape. The operation switch 57 is rotatably mounted on the console 55 via a fixing pin 57 a at a central portion thereof so as to be rotatable about the fixing pin 57 a. A contact surface 57 b that extends outward toward the front of the seat body 30 is formed on the curved outer side of both end portions of the operation switch 57 , that is, on the rear side. In addition, since the operation switch 57 is covered from above by the tilt operation handle 55a and the rotation operation handle 55b, it cannot be visually confirmed from the outside.

The operation lever 56a is connected to the tilting operation handle 55a via a rod holding member 58a, and the operation rod 56b is connected to the rotation operation handle 55b via a rod holding member 58b. That is, the end of the operating rod 56a is bent upward, that is, it is bent toward the front perpendicular to the paper surface in the figure, and the corresponding lever holding member 58a formed in an L shape is fitted from above, that is, it is bent in the front direction in the figure. The middle is fitted from the front direction perpendicular to the paper surface to be connected. The same applies to the rod holding member 58b. In addition, the rod holding member 58a and the rod holding member 58b may be formed integrally with the tilting operation handle 55a and the rotation operation handle 55b, respectively.

Next, the operation of the operation switch 57 will be described. From the state of the operating mechanism shown in FIG. 16, when the tilting operation handle 55a is pulled forward, that is, downward in the figure, the rod holding member 58a moves forward together with the operation rod 56a. At this time, the tip, that is, the tip portion of the lever holding member 58a first comes into contact with the contact surface 57b of the operation switch 57, and the operation switch 57 is rotated around the fixed pin 57a. When the tilting operation handle 55a is continuously pulled, as shown in FIG. 17 , the tilting operation handle 55a comes into contact with the stopper portion 55c of the console 55 and stops.

In this state, the abutment surface 57b of the rotating operation switch 57 abuts against the side surface of the lever holding member 58a, and the tip, that is, the front end portion of the other lever holding member 58b first abuts against the other abutting surface 57b of the operation switch 57. Abut. Therefore, the movement of the rotary operation handle 55 b is prevented by the abutment of the tip of the lever holding member 58 b against the contact surface 57 b of the operation switch 57 . In other words, in a state where the contact surface 57b of the rotating operation switch 57 is in contact with the side surface of the lever holding member 58a, the tip portion of the other lever holding member 58b is in contact with the other contact surface 57b of the operation switch 57. Way, and determined the crescent-shaped or dart-shaped shape of operation switch 57.

In the state ( FIG. 17 ) where the dumping operation handle 55a is pulled, the rotation operation handle 55b cannot be pulled, and conversely, when the rotation operation handle 55b is pulled ( FIG. 18 ), the dumping operation handle 55a cannot be pulled. When one of the tilting operation handle 55a or the rotation operation handle 55b pulled before returns to the initial position, the tilting operation handle 55a or the rotation operation handle 55b can be pulled forward. Therefore, according to such an operation mechanism, it is possible to prevent the simultaneous operation of the tilting mechanism and the rotation mechanism with a simple mechanism, that is, it is possible to realize an alternative operation safely.

In addition, in the child seat 1, since the operations for tilting and rotating the seat body 30 can be performed only by pulling the tilting operation handle 55a or rotating the operation handle 55b, one-handed operation can be realized, and the Use the other hand freely. In addition, even if the operation mechanism is operated with one hand, it can be stably operated.

In addition, as described above, one of the tilting operation handle 55a or the rotating operation handle 55b may be pulled, even if the rod holding member 58a is not slid until the operation switch 57 abuts against the side surface of the rod holding member 58a. However, when the tip of the lever holding member 58a rotates the operation switch 57, the sliding of the other of the tilt operation handle 55a or the rotation operation handle 55b is also restricted. That is, the operation switch 57 may be a simple rectangular member or the like. In addition, the operation mechanism having the above-described operation switch 57 can be applied not only to the field of child seats but also to other fields in which there is a requirement to safely implement an alternative operation.

However, referring to FIG. 3 in particular, as described above, a rectangular opening 26 is formed on the upper portion of the standing portion 22 of the carrier 20 . That is, in the child seat 1 , the opening 26 can be formed in the upper part of the upright portion 22 of the pedestal 20 by arranging the tilting mechanism and the rotating mechanism at the lower portion 31 of the seat and the lower portion of the upright portion 22 of the pedestal 20 . . The opening 26 can be used as a handle when carrying the child seat 1 .

In addition, as shown in FIG. 4 , a mechanism or device 90 having various functions can be attached to the opening 26 . Accordingly, the bedding base 20 can have functions other than the function of supporting the seat body 30 . Especially in the state of the seat main body 30 facing backward, it is also possible to adopt the following method. For example, a camera is mounted to take a still picture or a video, so that the protector can observe the seated baby through a mobile phone or a car navigation system. The case of young children. In addition, a screen may be mounted so that infants and young children can enjoy images. In addition, speakers may be mounted so that infants and young children can enjoy sounds. In addition, a fan, an air conditioner, a lighting device, and the like may be mounted. In addition, a plasma generator that discharges plasma into the air by plasma discharge or the like may be mounted. According to such a plasma generating device, it can be expected to obtain the air cleaning effect of air disinfection, dust removal, sterilization, organic matter decomposition, and deodorization, or hair care and facial care for infants and protectors' hair or skin care. effects etc. In addition, these devices and the like may be mounted via a mount so that these devices and the like can be easily replaced.

In order to use the electric equipment mounted in the opening 26, a replaceable battery may be disposed inside the mounting base 20, or a cigarette lighter socket of a vehicle may be used as a power source. In order not to interfere with the tilting operation and rotation operation of the seat body 30, the power cable from a power source such as a battery or a cigarette lighter socket to an electric device is preferably routed so as to pass through the lower surface and the back of the child seat 1, or Wiring is performed so as to pass through the inside of the carrier 20 .

In addition, of course, the opening 26 may have a shape other than a rectangle, for example, may be a circle. In addition, the opening 26 may pass through toward the rear, or may be only a recessed part. In addition, the opening 26 described above can be applied not only to a child seat of the type capable of tilting and rotating the seat body relative to the pedestal, but also to a type, A type in which the seat body is attached so as to be detachable with respect to the pedestal.

However, a child seat is required to have high impact resistance for the purpose of protecting infants and young children from the impact on the vehicle during a collision. The impact resistance performance is verified by the displacement amount of the child seat relative to the seat of the vehicle immediately after the collision, the displacement amount due to the irregular movement of the child seat due to the reaction based on the displacement immediately after the collision, and the like. In order to achieve high impact resistance, it is preferable that the child seat is firmly fixed to the seat of the vehicle. The child seat is usually fixed using a seat belt of a seat belt device provided on the seat of the vehicle. Seat belt device provided in a seat of a vehicle The seat includes a seat belt, an armature having a tongue into which the seat belt is inserted, and a buckle capable of engaging and releasing the tongue.

Referring to FIG. 4 , as described above, the child seat 1 has seat belt engaging protrusions 27 formed on the left and right rear portions of the base 21 of the pedestal 20 . The belt engaging projection 27 is arranged at a position where it engages with an armature or a buckle 91 of the seat belt device from the rear side in a state where the pedestal 20 is attached to a vehicle seat. In other words, the belt engaging protrusion 27 is formed over a certain length so as to be able to cope with different positions of the armature or the buckle 91 depending on the vehicle type. In addition, the belt engaging projection 27 may be a groove-shaped belt engaging groove as long as it can engage with the armature of the seat belt device or the buckle 91 .

The armature or the buckle 91 of the seat belt device is usually disposed near the seat surface of the vehicle seat, and is more rigid than the seat belt of the seat belt device. Therefore, by engaging the armature or the buckle 91 of the seat belt device with the seat belt engaging protrusion 27 or the seat belt engaging groove formed on the bearing seat 20 of the child seat 1, especially the lower part of the seat 20, close, so that the bearing seat 20 can be firmly fixed. As a result, high impact resistance performance can be realized.

In addition, preferably, the seat belt engaging protrusion 27 or the seat belt engaging groove is formed so that the recess or the seat belt engaging seat 20 between the seat 20 and the seat belt engaging protrusion 27 engages with the armature or the buckle 91 . The cross-sectional shape of the engaging groove perpendicular to the longitudinal direction forms an acute angle, so that the armature or the buckle 91 will not deviate or fall out but engage more reliably. In addition, the belt engaging protrusion 27 or the belt engaging groove may not engage with the iron or the buckle 91, but may engage with the seat belt of the seat belt device. Even in this case, by fixing the lower part of the pedestal 20 of the child seat 1, it can be fixed more firmly than the conventional child seat. In addition, the seat belt engaging protrusion 27 and the bearing seat 20 may also be formed as separate components.

The seat belt engaging projection 27 or the seat belt engaging groove described above can be applied not only to a child seat capable of tilting and rotating the seat body relative to the pedestal, but also to a child seat in which the seat body is A type that is fixed to a pedestal, and a type in which the seat body is detachably attached to the pedestal.

The child seat 1 has a plurality of support points against impacts in order to suppress the amount of displacement of the seat body 30 relative to the pedestal 20 and achieve higher impact resistance performance. That is, for example, when the vehicle collides with an object from the front, the entire child seat 1 receives an inertial force in the forward direction. At this time, the pedestal 20 is fixed by the seat belt of the vehicle, whereas the seat main body 30 is not fixed by the seat belt of the vehicle. Therefore, although the seat main body 30 tends to displace forward, the seat main body 30 contacts and is supported by the pedestal 20 at the support point, and the displacement amount of the seat main body 30 is suppressed.

Referring to FIG. 10 , in the child seat 1 , as described above, the respective tips of the upper connecting rods 43 are engaged with the upper engaged guide members 44 to form support points A. As shown in FIG. That is, when the entire child seat 1 is subjected to an inertial force in the forward direction due to a collision of the vehicle, the top ends of the upper connecting rods 43 arranged on the side of the carrier seat 20 directly fixed to the vehicle seat face toward the front. The rear side supports the upper engaged guide member 44 disposed on the seat body 30 side. As a result, when the vehicle collides with an object, forward displacement of the seat body 30 with respect to the pedestal 20 is suppressed.

Similarly, the support point B is formed by the impact support surface 44b formed on the outer peripheral surface of the upper engaged guide member 44 attached to the seat body 30 and the support wall surface 28a inside the front end of the pedestal 20 . In addition, the annular upper surface 40d ( FIG. 8 ) of the lower engaged guide member 40 attached to the seat main body 30 and the lower end of the support wall 23a forming the main body accommodation opening 23 of the seat 20 form a supporting point. c. In FIG. 10 , the support point C is, in particular, the rear end portion of the lower end portion of the support wall 23 a of the bearing seat 20 and the rear end portion of the upper surface 40 d of the lower engaged guide member 40 .

The support point C may be the left and right portions of the lower end portion of the annular support wall 23 a of the pedestal 20 and the left and right portions of the upper surface 40 d of the lower engaged guide member 40 according to the tilted position of the seat body 30 . That is, the diameter of the lower engaged guide member 40 is formed larger than the lateral width L ( FIG. 5 ) of the main body accommodation opening 23 of the bearing seat 20 so that the upper surface 40 d of the lower engaged guide member 40 is in either The dumping positions all form a supporting point C with the lower end of the supporting wall 23 a of the bearing seat 20 . Thus, in the child seat 1 , the seat main body 30 accommodated in the main body accommodating opening 23 is prevented from falling out of the pedestal 20 .

Because the child seat 1 has support points A, B, C, the displacement of the seat body 30 in particular relative to the carrier 20 is suppressed, that is, the forward movement of the seat body 30 relative to the carrier 20 is suppressed. . As a result, higher impact resistance performance can be realized. In addition, since the supporting points A, B, and C are arranged at the seat lower portion 31 of the child seat 1 and the lower portion of the upright portion 22 of the carrier 20 , the carrier 20 can more stably support the seat body 30 . In addition, since the seat 20 supports the seat body 30 at a plurality of support points A, B, and C, the impact is dispersed, so the material forming the seat 20 and the seat body 30 can be changed from metal or the like to a lighter one. Resins, etc., which can also reduce costs.

In addition, the supporting base 20 and the seat main body 30 do not always need to be in contact at the supporting point, but may be slightly separated and only in contact at the time of collision. In addition, the child seat 1 may be configured to have only one support point A, may also be configured to have two support points among support points A, B, and C, or may be configured to have three support points A, B and C. In addition, the support points for achieving high impact resistance are not limited to the above-mentioned three parts. That is, the portion of the seat body 30 that abuts on the seating base 20 may be fixed at the front portion including the upper engaged guide member 44 and the rear portion, and at the lower portion below these front portions and the rear portion. The engaging guide member 40 is arbitrarily configured at the inner lower portion.

19 to 22( a ) to ( c ), the height adjustment mechanism of the child safety belt 70 ( FIG. 1 ) will be described. Fig. 19 is an enlarged perspective view of the back of the child seat 1, Fig. 20 is an exploded assembly view of a part of the height adjustment mechanism of the child safety belt of the child seat, and Fig. 21 (a) to (c) are the child seat 1 The figure explaining the height adjustment mechanism of the child safety belt 70, FIGS. In addition, in FIG. 19, illustration of the back panel 68 mentioned later is abbreviate|omitted.

In the child seat 1 , in order to safely restrain the infant on the child seat 1 , there is an infant belt 70 having a wide width corresponding to a seat belt provided in a vehicle seat. The child safety belts 70 are respectively arranged at the left and right of the front surface of the backrest portion 32 of the seat body 30 , and the left and right child safety belts 70 are joined together at the front of the body of the infant. Therefore, the infant safety belt 70 extends forward through the backrest 32 from the rear of the backrest 32 of the seat main body 30 , and extends downward through the seating surface, that is, the seat lower part 31 . Some are fixed.

The position from the seating surface of the seat body 30 to the portion of the backrest 32 through which the child belt 70 penetrates, that is, the height of the child belt 70 needs to be adjusted according to the sitting height of the infant. Therefore, the child seat 1 has a height adjustment mechanism for the child seat belt 70 in order to adjust the height of the child seat belt 70 appropriately.

Therefore, two openings 36 extending in the vertical direction, that is, in the height direction, are formed in the back portion 32 of the seat body 30 . These openings 36 are formed bilaterally symmetrically across the central pillar portion 37 of the backrest portion 32 , and are formed across a range required for the height of the child safety belt 70 in the height direction. Through these openings 36 , the moving part 61 including the above-mentioned headrest 60 disposed on the front surface of the backrest 32 is attached so as to be slidable in the height direction with respect to the backrest 32 .

The moving part 61 has: a head pad 60 arranged on the front surface of the backrest part 32 ; On the head pad 60 , the first engaging member 63 is attached to the rotation support member 62 , and the second engaging member 64 is attached to the first engaging member 63 . In addition, in FIG. 20 , the rotation support member 62 , the first engaging member 63 , and the second engaging member 64 are slightly enlarged for clarity with respect to the backrest 32 and the headrest 60 . In addition, since the headrest 60 holds the child safety belt 70 through the slot opening 60a, it constitutes a seat belt holding member, but it may be held by another member.

In the headrest 60 , two slot openings 60 a having substantially the same width as the openings 36 are formed at positions corresponding to the two openings 36 of the backrest 32 for inserting the child safety belt 70 . A mounting portion 60 b protruding rearward through the opening 36 of the backrest portion 32 is formed above each of the slot openings 60 a and near the center of the head pad 60 . Below each of the slot openings 60 a and near the center of the headrest 60 , a beam-shaped engaged beam 60 c protruding rearward through the opening 36 of the backrest portion 32 is formed. Engagement holes 60d penetrating in the up-down direction are formed at respective front ends of the engaged beams 60c.

On the left side of the left slot opening 60a and the right side of the right slot opening 60a, a flat support plate 60e protruding rearward through the opening 36 of the backrest 32 and extending in the height direction is formed. A recessed portion 60f for accommodating a cylindrical engaging rod 65 described later is formed on the support plate 60e. Further, two ventilation openings 60 g are formed below each of the slot openings 60 a, which are always open toward the respective openings of the openings 36 regardless of the height position of the head pad 60 .

The rotation support member 62 has a housing 62a, a rectangular flat protective wall 62b protruding upward from the housing 62a, and a flat first handle 62c protruding rearward from the housing 62a. The housing 62a is integrally attached to the headrest 60 and the rotation support member 62 by being attached to the attachment portion 60b ( FIG. 19 ) of the headrest 60 protruding through the respective openings 36 of the backrest 32 . At this time, the pillar portion 37 of the backrest portion 32 is disposed between the headrest 60 and the rotation support member 62 . The protective wall 62b prevents the operator's hand from coming into contact with the pillar portion 37 of the seat body 30 when the moving portion 61 is operated.

The first engaging member 63 has a box-shaped main body member 63a. A rectangular opening 63b is formed on the back surface of the main body member 63a. The upper part of the main body member 63a is attached to the housing 62a of the rotation support member 62 so that the first engaging member 63 can rotate about a rotation axis extending in the lateral direction. Moreover, in the lower part of the main body member 63a, the cylindrical engaging rod 65 is extended toward left and right outer sides, respectively. The engaging rod 65 has a reinforcement rod 65a inserted therein across the right and left for reinforcement. The reinforcing rod 65a is formed of metal such as carbon steel, but is not limited thereto.

On the back surface of the backrest portion 32 , an engaged curved surface portion 38 is formed on the pillar portion 37 , the left side of the left opening 36 , and the right side of the right opening 36 . The engaged curved surface 38 has a structure in which a plurality of concave curved surfaces including a part of a cylindrical surface extending in the lateral direction are arranged at equal intervals in the height direction and the entrance is formed to be large. In order to easily accommodate the engaging rod 65 having a concave curved cylindrical shape.

By engaging the engaging rod 65 of the first engaging member 63 with an arbitrary horizontal row of concave curved surfaces of the engaged curved surface portion 38 , the headrest 60 can be adjusted to an arbitrary height position with respect to the backrest portion 32 . At this time, the engaging rod 65 of the first engaging member 63 engaged with the engaged curved surface portion 38 is also accommodated in the support plate 60e of the head pad 60 that slides in the height direction together with the first engaging member 63. Inside the recess 60f. In addition, the first engaging member 63 is biased in the rotational direction in which the engaging rod 65 is engaged with the engaged curved surface portion 38 of the backrest 32 by the left and right torsion springs 63 c integrally formed inside the rotation support member 62 . force.

The second engaging member 64 is a plate-shaped member that can slide vertically inside the main body member 63a of the first engaging member 63, and is biased downward by the coil spring 64a. At the lower end portion of the second engaging member 64, a pair of engaging pins 66 protruding downward from the main body member 63a of the first engaging member 63 are formed on the left and right. Each of the engaging pins 66 is inserted into the engaging hole 60 d of the engaged beam 60 c protruding from the head pad 60 through the opening 36 to engage with the head pad 60 . In addition, the second engaging member 64 has a flat second handle 64 b protruding rearward through the rectangular opening 63 b of the first engaging member 63 .

The operation of adjusting the height of the child safety belt 70 will be described with reference to FIGS. 21( a ) to ( c ). 21( a ) to ( c ) are diagrams for explaining the height adjustment mechanism of the child safety belt 70 of the child seat 1 as described above, and are views of the seat main body 30 , that is, the center of the moving part 61 in the width direction. Rough longitudinal section view. First, grasp the first handle 62c of the rotation support member 62 and the second handle 64b of the second engaging member 64 at the same time, and pull the second handle 64b upward toward the first handle 62c ( FIG. 21( a )). That is, the second engaging member 64 is pulled upward with respect to the first engaging member 63 . This operation is performed, for example, by placing the thumb on the upper surface of the first handle 62c, bringing the index finger and middle finger into contact with the lower surface of the second handle 64b, and pulling upward. By pulling the second engaging member 64 upward relative to the first engaging member 63 , the engaging pin 66 of the second engaging member 64 and the engaging hole 60 d of the engaged beam 60 c of the head pad 60 are aligned. engagement is released. As a result, the first engaging member 63 is in a rotatable state with respect to the rotation supporting member 62 ( FIG. 21( b )).

Then, when the operation of pulling up the second handle 64 b of the second engaging member 64 is continued, the first engaging member 63 rotates relative to the rotation support member 62 . As a result, the engagement between the engagement rod 65 of the first engagement member 63 and the engaged curved surface portion 38 on the back surface of the backrest portion 32 is released. As a result, the head pad 60 is in a state where it can slide in the height direction with respect to the backrest 32 ( FIG. 21( c )). In this state, the child safety belt 70 can be slid to a desired height by sliding the headrest 60 in which the child safety belt 70 is inserted through the slot opening 60 a in the height direction relative to the backrest 32 .

Here, when the second engaging member 64 is pulled upward relative to the first engaging member 63 to release the engagement of the engaging pin 66 , when the first engaging member 63 is rotated relative to the rotation support member 62 , the sliding of the second engaging member 64 relative to the first engaging member 63 is restricted. This will be described with reference to FIGS. 22( a ) to ( c ). 22( a ) to ( c ) are other views for explaining the height adjustment mechanism of the child safety belt of the child seat 1 as described above, and are longitudinal cross-sectional views of the side including the second engagement member 64 . In FIGS. 22( a ) to ( c ), illustration of members other than the first engaging member 63 and the second engaging member 64 is omitted.

When referring to FIGS. 22( a ) to ( c ), locking protrusions 64 c (refer to FIG. 20 ) are formed on the side surfaces of the second engaging member 64 , and locking recesses are formed inside the casing 62 a of the rotation support member 62 . 62d. From the state of FIG. 22( a), the second engaging member 64 is pulled upward relative to the first engaging member 63 ( FIG. 22( b )), and then the first engaging member 62 is moved relative to the rotation supporting member 62 . The joint member 63 rotates. Thereby, the locking protrusion 64 of the 2nd engaging member 64 engages with the locking recessed part 62d of the rotation support member 62 (FIG.22(c)). As a result, sliding of the second engaging member 64 relative to the first engaging member 63 is restricted.

Therefore, assuming that the pulling force of the second handle 64b of the second engaging member 64 is weak in this state, the engaging pin 66 will not protrude again due to the force of the coil spring 64a. In other words, the second engaging member 64 slid upward is safely configured as long as the engaging rod 65 of the first engaging member 63 is not engaged with the engaged curved surface portion 38 of the backrest portion 32 , the second engaging component 64 will not return to the original position.

In order to fix the child safety belt 70 at the height after sliding the child safety belt 70 to the desired height, it is only necessary to perform the above-mentioned series of operations in reverse. That is, the first engaging member 63 is rotated relative to the rotation support member 62 so that the engaging rod 65 of the first engaging member 63 is engaged with the engaged curved surface portion 38 of the backrest portion 32 . Thereby, the engagement between the locking protrusion 64c of the second engaging member 64 and the locking recessed portion 62d of the rotation support member 62 is released. Then, by sliding the second engaging member 64 downward relative to the first engaging member 63 , the engaging pin 66 of the second engaging member 64 and the engaging hole 60 d of the engaged beam 60 c of the head pad 60 are aligned. Snap. Since these operations are energized and assisted by the torsion spring 63c and the coil spring 64a, they can be easily performed.

Since the above-mentioned height adjustment mechanism of the child safety belt 70 has two engagements, namely, the engagement of the second engagement member 64 with the headrest 60 and the engagement of the first engagement member 63 with the backrest portion 32, even Assuming that an impact is applied to the entire child seat 1, the two engagements will not be disengaged. That is, the disengagement of the second engaging member 64 with respect to the headrest 60 is carried out by moving upward, and the disengagement of the first engaging member 63 with respect to the backrest 32 is performed by moving away from the backrest 32 in the direction of rotation. The movement in the direction is carried out. Therefore, the directions of the forces required to release these engagements are substantially perpendicular to each other.

In addition, the disengagement of the second engaging member 64 with respect to the headrest 60 and the disengagement of the first engaging member 63 with respect to the backrest 32 are performed by pulling the second handle 64 b of the second engaging member 64 . implemented as a series of continuous actions. That is, by always applying the same upward force to the second handle 64 b of the second engaging member 64 , the two-stage engagement can be released. Therefore, the height adjustment mechanism of the child safety belt 70 is configured so that unintended disengagement is less likely to occur and intended disengagement can be easily performed.

In addition, since the pillar portion 37 remains at the center of the backrest portion 32 and the engaged curved surface portion 38 is formed, the strength of the backrest portion 32 is maintained. In addition, since the concave curved surface of the engaged curved portion 38 of the backrest portion 32 is formed in three rows in the height direction, it is prevented that the engaging rods 65 of the first engaging member 63 are not aligned with the lateral direction. The concave curved surface of the engaging curved surface 38 engages with the concave curved surfaces of the engaged curved surface 38 having different heights from each other.

In addition, the height adjustment mechanism of the child safety belt 70 , that is, the movement mechanism can be configured arbitrarily as long as it can be operated by the operation described with reference to FIGS. 21( a ) to ( c ). That is, the moving mechanism can be configured arbitrarily as long as it has a structure in which the sliding direction is parallel to the direction of the force applied to the second engaging member, and the engagement is first released by sliding the second engaging member. Then, the engagement is disengaged by rotation of the first engagement member, and a slidable state is established. In addition, the above-mentioned height adjustment mechanism can be applied not only to the field of child seats, but also to other fields where there is a need to safely realize the operation of the moving mechanism.

However, for the infant safety belt 70, after the height is properly adjusted according to the sitting height of the infant through the above-mentioned height adjustment mechanism, it is necessary to properly adjust the fastening of the infant safety belt 70 according to the body shape of the infant. The tightness, that is, the length extending to the front of the backrest 32 is adjusted.

The adjustment of the length of the child safety belt 70 using the adjustment seat belt 75 will be described with reference to FIGS. 23 and 24 . FIG. 23 is a perspective view showing the adjustment seat belt 75 at the highest position of the child seat 1 , and FIG. 24 is a perspective view showing the adjustment seat belt 75 at the lowest position of the child seat 1 . 23 and 24 are perspective views of the seat body 30 of the child seat 1 viewed from below.

The left and right infant safety belts 70 are connected to the rear side of the backrest portion 32 of the seat main body 30, and therefore constitute a single safety belt. In addition, the child safety belt 70 is connected to one end of a wide adjustment belt 75 on the rear side of the backrest portion 32 of the seat body 30 . That is, one end of the adjustment seat belt 75 is folded back, and the portion that is folded back is overlapped and sewed. As a result, a loop portion 75 a is formed at one end of the adjustment seat belt 75 . The child safety belt 70 is inserted into the loop portion 75a. Therefore, the loop portion 75 a of the adjustment seat belt 75 constitutes a connection portion with the child safety belt 70 . The adjustment belt 75 is formed by weaving a material generally used in vehicle seat belts, such as polyester fiber, but is not limited thereto.

The adjustment seat belt 75 extends downward along the backrest portion 32 of the seat body 30, through the opening 31c formed in the vicinity of the lower end portion of the seat body 30, that is, the lower portion of the rear side of the cylindrical portion 31b of the seat lower portion 31 (see FIG. 7 ) into the inner space 35 . Then, when described with reference to FIG. 9 , the adjustment seat belt 75 entering the interior space 35 of the seat main body 30 is bent at an acute angle by the seat belt support protrusion 33 e protruding upward formed on the bottom surface of the interior space 35 . And it extends upward to the vicinity of the lower surface of the seat pad 34 .

Then, after adjusting the seat belt 75 to extend forward in the interior space 35 parallel to the seat bottom surface 33, the opening 31d (refer to FIG. 7 ) Instead, it protrudes toward the inner space 35 . Then, the adjustment seat belt 75 is extended from the opening 31 e formed in the front side of the truncated cone portion 31 a of the seat lower portion 31 toward the upper side of the seat lower portion 31 . Then, the seat belt 75 is adjusted to extend toward the front of the seat main body 30 via the seat belt adjuster 76 arranged behind the console 55 of the operating mechanism installed on the upper surface of the seat lower portion 31 ( FIG. 1 ). the front part of the .

The seat belt adjuster 76 can adjust the locking and unlocking of the seat belt 75 by a known mechanism. When the seat belt 75 is locked and adjusted by the seat belt adjuster 76 , the adjustment seat belt 75 cannot be moved in the front-rear direction with respect to the seat belt adjuster 76 . On the other hand, when the lock of the seat belt adjuster 76 is released, the adjustment seat belt 75 can be moved in the front-back direction with respect to the seat belt adjuster 76 .

Next, length adjustment of the child safety belt 70 will be described. The length adjustment of the child safety belt 70 is performed in a state where the seat belt adjuster 76 is unlocked. When it is desired to increase the length of the child safety belt 70 extending forward of the backrest 32 , it can be lengthened by pulling the child safety belt 70 extending forward of the backrest 32 forward or upward. Eventually, the child safety belt 70 can be stretched until there is no extra portion on the rear side of the backrest portion 32 of the seat body 30 . At this time, the child safety belt 70 extending forward of the backrest 32 has the maximum length, and the loop portion 75a of the adjustment belt 75 connected to the child safety belt 70 is at the highest position ( FIG. 23 ).

Adjusting the highest position of the seat belt 75 means that the loop portion 75 a is located at a position corresponding to a portion of the head cushion 60 into which the child seat belt 70 is inserted, where the slot opening 60 a is formed. Therefore, the highest position of the adjustment seat belt 75 is changed according to the height adjusted by the height adjustment mechanism of the child safety belt 70 .

On the other hand, when it is desired to shorten the length of the child safety belt 70 extending forward of the backrest 32, the portion of the seat belt 75 extending forward of the seat body 30 can be adjusted by pulling forward ( FIG. 1 ). And shortened. Finally, the adjustable seat belt 75 can be stretched until the loop portion 75 a of the adjustable seat belt 75 connected to the infant seat belt 70 is arranged near the opening 31 c of the lower seat portion 31 . At this time, the length of the child safety belt 70 extending forward of the backrest 32 is the shortest, and the loop portion 75a of the adjustment belt 75 connected to the child safety belt 70 is at the lowest position ( FIG. 24 ).

The lowest position of the seat belt 75 is adjusted so that the loop portion 75 a is located near the opening 31 c of the seat lower portion 31 . Therefore, the lowest position for adjusting the seat belt 75 is fixed at the position of the opening 31 c of the seat lower portion 31 .

Thus, the length adjustment of the child safety belt 70 is carried out by stretching the child safety belt 70 extending forward of the backrest 32 or the portion of the adjustment belt 75 extending forward of the seat body 30. The infant safety belt 70 is fastened according to the size of the infant.

In the child seat 1, the adjustment seat belt 75 extends to the opening 31c formed near the lower end portion on the rear side of the seat main body 30, that is, the lower portion of the rear side of the cylindrical portion 31b of the seat lower portion 31, and enters into the Inside the interior space 35 . Then, the adjustment belt 75 is bent at an acute angle by the belt support protrusion 33e and extends upward. Therefore, the adjustment of the seat belt 75 does not take the shortest path toward the seat belt adjuster 76, but is formed on a circuitous path. Therefore, in the child seat 1, by arranging the lowest position of the adjustable seat belt 75 in the vicinity of the lower end of the seat body 30, which is lower than the conventional child seat, the highest position of the adjustable seat belt 75 is adjusted. The distance between and the lowest position is ensured to be longer. As a result, the range of length adjustment of the child safety belt 70 can be further expanded.

In addition, in order to adjust the adjustment seat belt 75 smoothly, a pulley may be arranged at a portion in contact with the seat body 30 , for example, at an upper portion of the opening 31c. In addition, the adjustment seat belt 75 may pass through the outside of the seat body 30 , that is, the lower surface of the seat body 30 , instead of the inside of the seat body 30 .

However, a rear panel (harness panel) 68 is mounted on the rear surface of the backrest portion 32 of the seat main body 30 . FIG. 25 is an enlarged perspective view of the rear surface of the child seat 1 , and FIG. 26 is a perspective view of the rear panel 68 of the child seat 1 . The back panel 68 functions to cover the redundant child safety belt 70 arranged on the rear side of the backrest 32 of the seat body 30 and to accommodate the adjustment belt 75 on the backside of the backrest 23 so that it does not form a hindrance. In addition, the back panel 68 functions to cover a part of the movable portion 61 and the engaged curved surface portions 38 formed on both sides of the opening 36 of the backrest portion 32 of the seat body 30 so as not to be exposed.

As shown in the longitudinal sectional view of FIG. 9 , the back panel 68 is arranged so as to extend across the height direction at the central portion of the seat body 30 in the width direction, and is attached to be fitted to the seat body 30 . The rear panel 68 has a panel upper portion 68a and a panel lower portion 68b. The back panel 68 is integrally formed by injection molding of, for example, a resin material such as polypropylene so as to have flexibility. In particular, the boundary portion between the upper panel portion 68a and the lower panel portion 68b of the back panel 68 is formed thinner than other portions to form a hinge 68c that can be repeatedly bent without being damaged. However, the rear panel 68 may also omit the hinge 68c and allow it to bend by its flexibility. Moreover, the child safety belt 70 and the adjustment belt 75 are accommodated in the accommodation space 68d (FIG. 9) between the seat main body 30 and the back panel 68. As shown in FIG.

The upper end portion of the back panel 68 is engaged with the backrest portion 32 of the seat body 30, and by releasing the engagement, the panel upper portion 68a is bent rearward around the hinge 68c, so that the gap between the seat body 30 and the back panel 68 can be opened. The containment space between them is 68d. That is, the back panel 68 can be partially separated from the backrest portion 32 . For example, when adjusting the excess portion of the child safety belt 70 arranged on the back side of the seat body 30, the panel upper portion 68a of the back panel 68 can be bent and opened to facilitate work.

In addition, an opening 68e is formed in the panel upper portion 68a of the rear panel 68 at the central portion in the width direction so as to extend over the height direction. The width of the opening 68 e is larger than the width of the pillar portion 37 of the back portion 32 of the seat body 30 . Therefore, the two openings 36 of the backrest 32 are partially exposed through the opening 68 e of the back panel 68 . As a result, air permeability can be ensured through the two openings 36 of the backrest 32 and the ventilation opening 60g ( FIG. 20 ) of the headrest 60 in the front-rear direction of the backrest 32 of the seat main body 30, so that the baby sitting on the seat can Young children will not feel discomfort. Furthermore, by forming the opening 68e in the back panel 68, the movement part 61 can be operated with the back panel 68 attached. That is, the first handle 62c of the rotation support member 62 and the second handle 64b of the second engaging member 64 can be reached through the opening 68e of the back panel 68 .

The child safety belt 70 will be described with reference to FIGS. 27 to 29 . 27 is a plan view of a part of the child safety belt 70 , FIG. 28 is a side view of the child safety belt 70 in FIG. 1 in a stretched state, and FIG. 29 is a side view of the child safety belt 70 in FIG. 1 in a bent state.

The child safety belt 70 using the child seat 1 is formed so that a plurality of flexible belt-shaped belts 71 , for example, two belts 71 a and 71 b are overlapped. Each of the belts 71a, 71b is formed by weaving a material generally used in a vehicle seat belt, for example, polyester fiber. The belts 71a, 71b are sewn along a plurality of threads extending in the length direction, for example, two threads 71c.

When the child safety belt 70 is bent, the bent state is maintained against the force of gravity even after the bending force is released. That is, when the overlapping strips 71 are bent, the radius of curvature of the bent inner strip 71a is smaller than the curvature radius of the curved outer strip 71b. Due to the difference in the radius of curvature, between the outer surface of the opposing inner belt 71a and the inner surface of the outer belt 71b in the curved circumferential direction, for example, in the longitudinal direction of the belt 71, elongation occurs. deviation. Then, when the force to bend it is released, the stretched outer belt 71b of the child safety belt 70 intends to return to the original state, but the outer surface of the inner belt 71a and the inner surface of the outer belt 71 are due to friction. blocked due to resistance. As a result, the deformed child safety belt 70 maintains its shape against gravity even after the force to deform it is released.

Therefore, even after the protector releases the infant seat belt 70 and the infant gets off the child seat, the infant seat belt 70 maintains its shape against gravity, so that it does not become an obstacle when the infant is seated again later. In addition, since the belts 71a and 71b are formed of soft materials such as polyester fibers, it is safe even if an infant or a protector touches or collides with the child safety belt 70 .

In addition, the belts 71a, 71b may be loosely sewn so that when the child safety belt 70 is deformed, a larger deviation occurs between the two belts 71a, 71b. Alternatively, the child safety belt 70 may maintain its shape by inserting a metal wire, a metal plate, or the like capable of maintaining the deformed shape, not by frictional resistance. In addition, the structure which maintains the shape of the child safety belt 70 as a whole as mentioned above may be employ|adopted, and the structure which maintains a shape locally may be employ|adopted. In addition, an infant belt cover 77 ( FIG. 1 ) having cushioning properties may be wound around the portion of the infant belt 70 that contacts the infant. In this case, it is also possible to employ a configuration in which the shape is maintained with respect to the child belt cover 77 as described above. Furthermore, the child seat belt 70 described above can be applied not only to the field of child seats but also to other fields where there is a need for a seat belt that maintains its shape against gravity.

A method of attaching the child safety belt 70 to the seat body 30 will be described with reference to FIGS. 7 and 30 . FIG. 30 is a front view of the infant safety belt 70 of the child seat 1 . In particular, the child safety belt 70 shown in FIG. 30 is provided with a joint portion 78 ( FIG. 1 ) that is combined with the left and right child safety belts 70 by a joint mechanism at one end thereof, and is arranged between the thighs of infants and young children. Toddler seat belts 70 with middle and lap belts. In the method of attaching to the seat main body 30, the left and right child belts 70 and the child belts 70 of the lap belts are the same. The child safety belt 70 extending from the back portion 32 of the seat body 30 and the child safety belt 70 of the lap belt pass downward through the seat lower portion 31 as described above and are fixed at the lower part of the seat body 30 . Therefore, as shown in FIG. 7 , in the seat lower portion 31 , rectangular through-hole attachment openings 31 f are formed on the left, right, front and rear as attachment portions for inserting and attaching the infant safety belt 70 .

In addition, the top end of the belt 71 constituting the child safety belt 70 penetrating through the seat lower portion 31 of the seat body 30 is folded back, and is overlapped with the folded front portion and is sewn together. As a result, an annular loop portion 72 is formed at the tip end of the child safety belt 70 .

Then, the cylindrical fixing rod 73 is inserted into the loop portion 72 of the child safety belt 70 penetrating through the seat lower portion 31 of the seat body 30 . The fixing bar 73 is formed of metal such as carbon steel, for example, by cutting a round bar material, but is not limited thereto. The fixing bar 73 is formed larger than the installation opening 31f of the seat lower portion 31 through which the child safety belt 70 penetrates. That is, the length of the cylindrical fixing rod 73 is longer than the lateral dimension of the rectangular mounting opening 31f, and the diameter of the fixing rod 73 is larger than the longitudinal dimension of the mounting opening 31f. Therefore, the child safety belt 70 cannot be disengaged from the seat main body 30 in a state where the fixing leg 73 is inserted into the loop portion 72 of the child safety belt 70 . The fixing bar 73 inserted into the loop portion 72 of the child safety belt 70 is snap-fitted and fixed by the engaging claw 31 g formed near the attachment opening 31 f of the seat body 30 .

Since the child safety belt 70 is securely fixed by the snap-fitting of the fixing bar 73 , it does not hang down below the seat body 30 to become an obstacle. In addition, as long as the fixed rod 73 is rod-shaped, it does not need to be cylindrical, that is, not have a circular cross section. The fixing bar 73 may have a polygonal cross section such as a quadrangle or a hexagon.

By cutting out the fixing bar 73 for fixing the infant seat belt 70 from a bar-shaped material, the cost of raw materials and processing costs can be reduced significantly. In addition, since the structure of the fixing bar 73 is simple, it is also excellent in strength. In addition, since the fixing of the child safety belt 70 to the seat body 30 using the fixing rod 73 is simply a snap fit, the installation work is also easy.

The tent mechanism 80 will be described with reference to FIGS. 31 and 32 . FIG. 31 is a perspective view of the upper part of the child seat 1 , and FIG. 32 is an exploded assembly view of the rotation locking mechanism 81 of the canopy mechanism 80 of the child seat 1 .

The canopy mechanism 80 is attached to the head pad 60 , and the entire canopy mechanism 80 slides as the head pad 60 slides in the vertical direction. The canopy mechanism 80 has a rotation locking mechanism 81, a canopy (not shown) covering the head of an infant, a fixed canopy stay 82, a first movable canopy stay 83 and a second movable canopy that become a framework for supporting the canopy. Awning stay 84. The rotation locking mechanism 81 includes a pair of stay support members 85 , a pair of first rotation locking members 86 , and a pair of second rotation locking members 87 attached to curved left and right portions of the head pad 60 .

Both ends of the fixed tent stay 82 are fixedly attached to the left and right stay support members 85 . Both ends of the first movable roof stay 83 are supported by the left and right stays so that they can be rotated stepwise by the first rotation locking member 86 , that is, can be locked at the stepwise rotation position. part 85 on. Both ends of the second movable roof stay 84 are attached to the left and right stay support members 85 so as to be rotatable in stages by the second rotation locking member 87 .

Therefore, the first movable roof stay 83 and the second movable roof stay 84 can be rotated stepwise forward or backward about the rotation axis extending horizontally as a whole. Therefore, the canopy can be unfolded forward or folded backward. Moreover, since the 1st movable roof stay 83 is rotatable at a larger rotation angle than the 2nd movable roof stay 84, it can expand forward rather than the 2nd movable roof stay 84. FIG.

The first rotation locking member 86 has a first rotation end portion 86a formed in a circular shape. Moreover, the 2nd rotation locking member 87 has the 2nd rotation end part 87a formed in the circular shape of the same diameter as the 1st rotation end part 86a. The stay support member 85 has a circular rotation support portion 85 a having the same diameter as the first rotation end portion 86 a of the first rotation locking member 86 and the second rotation end portion 87 a of the second rotation locking member 87 . The elastic beam 85b divided by the U-shaped groove is formed in the center of the rotation support part 85a.

The first rotation end 86a of the first rotation locking member 86 is arranged on the outer surface of the elastic beam 85b of the stay supporting member 85, and the second rotation locking member is arranged on the inner surface of the elastic beam 85b of the stay supporting member 85. The second rotational end portion 87a of the member 87 . The elastic beam 85b, the 1st rotation end part 86a, and the 2nd rotation end part 87a are rotatably connected by inserting the rotation pin 88 in each center.

Two locking recesses 86 b having a concave curved surface shape are formed on a circumference concentric with the rotation center of the first rotation end portion 86 a of the first rotation locking member 86 . Similarly, two locking recesses (not shown) in the shape of a concave curved surface are formed on a circumference concentric with the rotation center of the second rotation end portion 87 a of the second rotation locking member 87 . In addition, on the outer surface of the rotation support portion 85a of the opposing stay support member 85, on a circumference concentric with the rotation center of the first rotation locking member 86 and throughout the rotation range of the first rotation locking member 86 and At positions corresponding to the locking recessed portion 86b, a plurality of locking convex portions 85c (not shown) in the shape of a convex curved surface that are locked with the locking concave portion 86b are formed. Similarly, on the inner side surface of the rotation support portion 85 a of the opposing stay support member 85 , on the circumference concentric with the rotation center of the second rotation locking member 87 and throughout the rotation range of the second rotation locking member 87 At positions corresponding to the locking concave portion 87b, a plurality of convexly curved locking convex portions 85c that are locked to the locking concave portion 87b are formed.

When the first movable tent stay 83 is slightly rotated relative to the stay support member 85 in order to unfold or fold the tent, the locking recess 86b of the first rotation locking member 86 will be aligned with the stay support member 85. The locking of the locking convex portion 85c is temporarily released. That is, the locking protrusion 85c of the stay supporting member 85 is disposed between the adjacent locking recesses 86b of the first rotation locking member 86, and the rotation supporting portion 85a of the stay supporting member 85 and the first rotation locking There is a slight separation between the first rotational ends 86a of the members 86 . In this state, due to the elastic force of the elastic beam 85b of the stay support member 85 connected to the first rotation end 86a of the first rotation locking member 86, the rotation support portion 85a of the stay support member 85 and the first The first rotation end portion 86a of the rotation locking member 86 is biased in the approaching direction.

Then, when the first movable tent stay 83 is further rotated relative to the stay support member 85, the locking recess 86b of the first rotation locking member 86 engages with the stay support member 85 adjacent in the rotation direction. The anti-convex portion 85c is locked and stabilized. The force of the elastic beams 85b of the stay support member 85 also contributes to this stable locking. On the other hand, the state in which the locking between the locking concave portion 86b of the first rotation locking member 86 and the locking convex portion 85c of the stay support member 85 is released is an unstable state. Therefore, when the first movable roof stay 83 is rotated, the first rotation locking member 86 can be locked with the locking convex portion 85c of the stay supporting member 85 adjacent in the rotational direction by the locking concave portion 86b. In a stable manner, the staged rotation, that is, the locking at the staged rotation position is realized.

In addition, the rotation of the 2nd movable roof stay 84 with respect to the stay support member 85 is the same as the rotation of the 1st movable roof stay 83 with respect to the stay support member 85 mentioned above. Therefore, when the second movable roof stay 84 is rotated, the second rotation locking member 87 can be locked with the locking convex portion 85c of the stay support member 85 adjacent in the rotation direction by the locking concave portion and stabilized. way to realize the staged rotation.

Since the canopy mechanism 80 can slide up and down together with the headrest 60, it can adjust the height according to the sitting height of the infant sitting on it by simple operation. In addition, since the locking concave portion 86b of the first rotation locking member 86 and the locking concave portion of the second rotation locking member 87 are formed in a concave curved shape, and the locking protrusion of the stay support member 85 locked with these members Since the portion 85c is formed in a convexly curved shape, locking and releasing can be performed very smoothly. Therefore, it is possible to obtain a rotation locking mechanism that can smoothly rotate and lock without requiring lubricating oil, although it is constituted by a simple mechanism with a small number of parts.

In addition, a structure in which one of the first movable roof stay 83 and the second movable roof stay 84 is omitted may also be adopted. Thereby, when commercializing a child seat, it is possible to easily show the difference for each product model. In addition, locking protrusions may be formed in the locking recesses 86 b of the first rotation locking member 86 and the second rotation locking member 87 , and locking recesses may be formed in the stay supporting member 85 . In addition, the number of locking protrusions and locking recesses can be selected arbitrarily. In addition, the locking convex portion and the locking concave portion may have any shape within the range where the locking and release can be performed.

The positioning mechanism 110 of the support leg 100 will be described with reference to FIGS. 33 to 35 . Fig. 33 is a perspective view of the positioning mechanism 110 of the supporting leg 100 of the child seat 1, Fig. 34 is a longitudinal sectional view of the positioning mechanism 110 of Fig. 33 to the left compared with the center, and Fig. 35 is a cross-sectional view of the positioning mechanism 110 of Fig. 33 passing through the center longitudinal section view. In addition, in FIG. 33 , in order to clarify the internal structure of the positioning mechanism 110 , only the outline of a part of the components is shown.

As shown in FIGS. 2 and 3 , the supporting legs 100 extend to the ground of the vehicle that supports the seat of the vehicle on which the child seat main body 10 is installed, and face the front of the child seat main body 10 , that is, the loading seat 20 from below. Partially supported. The supporting leg 100 has a leg part 101 that can be expanded and contracted in the longitudinal direction, and a positioning mechanism 110 that is attached to the leg part 101 and determines the length of the leg part 101 .

The leg portion 101 has a first cylindrical member 102 attached to the mounting base 20 , and a second cylindrical member 103 arranged below the first cylindrical member 102 . The upper part of the second cylindrical member 103 is inserted into the lower part of the first cylindrical member 102, and the length of the leg part 101 can be adjusted by adjusting the insertion amount. One through hole 102a into which a fixing member 117 described later is inserted is formed in the first cylindrical member 102 . In addition, in the second cylindrical member 103, a plurality of through holes 103a ( FIG. 2 ) arranged along the longitudinal direction and into which the fixing member 117 is selectively inserted are formed.

The positioning mechanism 110 has a housing 113, a slider 114, and a foot lever 115. The housing 113 is mounted on the lower portion of the first cylindrical member 102, and has a first housing half 111 and a second housing half. Body 112. The first case half body 111 is attached from the front of the first cylindrical member 102 , and the second case half body 112 is attached from the rear of the first cylindrical member 102 . That is, the first case half body 111 and the second case half body 112 are fitted so as to sandwich the first cylindrical member 102 from the front and rear, and are attached to the first cylindrical member 102 .

In the housing 113 on the side of the first housing half 111, it can slide between the direction perpendicular to the longitudinal direction of the leg 101, that is, the direction of separating from the leg 101 penetrating through the housing 113, and the direction of approaching. A slider 114 is configured in a manner. That is, in the housing 113 on the side of the first housing half 111 , a plurality of guide walls 111 a for guiding the sliding of the slider 114 are formed. A hollow protrusion 111c protruding rearward is formed on a front inner wall 111b of the first housing half 111, and a coil spring 116 is disposed around the protrusion 111c.

On the upper portion of the slider 114, a protrusion 111c of the first housing half 111 and a recess 114a for accommodating the coil spring 116 are formed. In addition, in the concave portion 114a of the slider 114, a columnar guide protrusion 114b protruding forward is formed ( FIG. 35 ). That is, in the slider 114, the protrusion 111c of the first housing half 111 and the coil spring 116 are accommodated in the upper recess 114a, and the guide protrusion 114b of the slider 114 is inserted into the hollow protrusion 111c. In addition, protrusions 114c are formed on the left and right of the upper portion of the slider 114 ( FIG. 34 ). In addition, a fixing member 117 ( FIG. 35 ), which is a separate member protruding rearward, is attached to the lower portion of the slider 114 . The fixing part 117 may also be integrally formed with the slider 114 .

At one end of the foot operation lever 115, an operation flap 115a as an operation portion arranged outside the housing is formed, and at the other end of the foot operation lever 115, a pair of connection portions 115b are formed, and the pair of connection portions 115b are connected. It is arranged inside the housing 113 and connected to the left and right protrusions 114 c of the slider 114 . A long hole 115c is formed in each of the connecting parts 115b, and the corresponding protrusion 114c of the slider 114 is disposed in the long hole 115c. Cylindrical rotation support protrusions 115 d are respectively formed on the left and right of the middle portion of the foot operating lever 115 . The foot operating lever 115 is mounted in the housing 113 by utilizing left and right rotation support protrusions 115d so as to be rotatable about a rotation axis extending in the lateral direction.

In a state where the positioning mechanism 110 is attached to the leg 101 , the slider 114 is biased toward the leg 101 by the coil spring 116 . Therefore, the fixing member 117 is inserted into the through-hole 102a of the first cylindrical member 102 and one of the through-holes 103a of the second cylindrical member 103, thereby restricting the movement of the second cylindrical member 103 relative to the first cylindrical member 102. slide. In addition, although the 1st cylindrical member 102, the 2nd cylindrical member 103, and the fixing member 117 are formed of metals, such as carbon steel, they are not limited to this.

When adjusting the length of the leg 101, first, the operation flap 115a of the foot operation lever 115 is operated upward to rotate about the rotation axis of the rotation support protrusion 115d by lifting upward. This action is performed, for example, by grasping the first cylindrical member 102 above the positioning mechanism 110 with the right hand stretched from above to below, and using the thumb of the right hand to hook it upwards from below. side lifts the operation flap 115a. Then, when the operation of rotating the operation blade 115 a of the foot operation lever 115 is continued, the operation blade 115 a is moved in the direction of the foot 101 by the rotational motion.

Accompanying the rotational movement of the operation flap 115 a, the connecting portion 115 b at the other end of the foot operation lever 115 is rotationally moved in a direction away from the foot 101 . The slider 114 slides along the guide wall 111a in a direction away from the leg portion 101 by the rotational movement of the link portion 115b. That is, while the connecting portion 115b of the foot operating lever 115 performs rotational movement, the movement of the slider 114 is restricted in the sliding direction by the guide wall 111a. However, the left and right protrusions 114c of the slider 114 move in the elongated hole 115c according to the rotational position of the corresponding linking part 115b, so that the rotational movement of the linking part 115b can be controlled without hindering the rotational movement of the linking part 115b. Converted to the sliding motion of the slider 114. In other words, the shape of the elongated hole 115c of the connecting portion 115b is determined so that the transition of the movement is smoothly performed.

When the slider 114 slides away from the leg portion 101, the fixing member 117 integrally attached to the slider 114 is pulled out from the through hole 102a of the first cylindrical member 102 and the through hole 103a of the second cylindrical member 103. , so that the length adjustment of the leg portion 101 can be performed. At this time, the right hand grasps the first cylindrical member 102, and the left hand can be used freely.

Then, for example, by using the left hand, the second cylindrical member 103 is slid relative to the first cylindrical member 102 to adjust the leg portion 101 to a desired length, and the through hole 102a of the first cylindrical member 102 and the second cylindrical member 102 are connected to each other. One of the through holes 103a of the two cylindrical members 103 is aligned. In this state, when the force applied to the operation flap 115 a of the foot operation lever 115 is released, the slider 114 is slid toward the foot 101 by the urging force of the coil spring 116 . As a result, the fixing member 117 of the foot operating lever 115 is inserted into the through hole 102a of the first cylindrical member 102 and the through hole 103a of the second cylindrical member 103 and the operation flap 115a of the foot operating lever 115 is restored. to the initial position. That is, the slider 114 is slidable between a fixed position where the leg portion 101 is stretched and contracted, and a release position where the fixation is released.

If the positioning mechanism 110 of the support leg 100 is summarized, when the foot operating lever 115 is rotated in a direction in which the operation flap 115a approaches the foot 101, the connecting portion 115b will move in a direction away from the foot 101 so that the slider 114 Slide to unlock position. On the other hand, when the foot operation lever 115 is rotated in a direction in which the operation flap 115a is away from the foot 101 , the connecting portion 115b moves in a direction close to the foot 101 to slide the slider 114 to a fixed position.

For the above-mentioned positioning mechanism 110, since the grasping of one end of the foot 101 and the sliding of the slider 114 to the release position can be implemented with one hand, the other hand can be used freely, so it can be used while grasping the foot. The length adjustment of the foot part 101 can be implemented by simple operation at the same time as the other end of the part 101. In addition, since in order to adjust the length of the foot 101, the operation flap 115a of the foot operation lever 115 must be operated upwards first, so even if an infant steps on the operation flap 115a of the foot operation lever 115 from above, it will not occur. A case where the slider 114 unexpectedly becomes the release position.

In addition, although the materials of the main parts are appropriately mentioned, the materials of the parts not mentioned are mainly formed by integrally molding a resin material such as polypropylene or acetal. However, other materials or fabrication methods may also be used.

Symbol Description

1 child seat;

10 Child seat body;

20 bearing seat;

27 engaging protrusions;

30 seat body;

91 Armature or buckle.

Claims (9)

1. A child seat mounted on a seat of a vehicle by a seat belt device comprising: a seat belt; a tongue plate into which the seat belt is inserted; An armature, a buckle capable of snapping and disengaging the tongue plate, the child seat is characterized in that, It has an engaging protrusion or an engaging groove that engages with an armature or a buckle when it is attached to a vehicle seat. 2. The child seat of claim 1, wherein: The engaging protrusion or the engaging groove is arranged on the rear side with respect to the armature or the buckle. 3. The child seat of claim 2, wherein: The engaging protrusions or the engaging grooves are arranged on the left and right sides of the child seat. 4. The child seat of claim 1, wherein: The engaging protrusions or the engaging grooves are arranged on the left and right sides of the child seat. 5. The child seat of claim 1, wherein: The engaging protrusion or the engaging groove is an engaging protrusion of a split component. 6. The child seat of claim 2, wherein: The engaging protrusion or the engaging groove is an engaging protrusion of a split component. 7. The child seat of claim 3, wherein: The engaging protrusion or the engaging groove is an engaging protrusion of a split component. 8. The child seat of claim 4, wherein: The engaging protrusion or the engaging groove is an engaging protrusion of a split component. 9. A child seat as claimed in any one of claims 1 to 8, characterized in that A bearing base and a seat main body supporting the bearing base are further provided, and the engaging protrusion or the engaging groove is provided on the bearing base.