JP2003080988A - Seat belt mounting structure - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To prevent a buckle or a tongue from dropping off without requiring a separate part or a separate structure, and to arrange a buckle and a tongue at a position where it is easy to insert each other. A rear portion of a seat cushion is rotatably attached to a lower portion of a seat back via a stay, and upper and lower ends of a front leg are rotatable on a lower front portion of the seat cushion and an upper rail. The seat belt 4 is attached to the rear seat 1 on which the seat cushion 2 slides forward and downward when the seat back 3 is tilted forward by attaching the extended portion 10 at the lower end of the seat back 3 to the upper rail 6. With structure, webbing 1
6 has a buckle 17 at one end and an anchor plate 15 at the other end.
, The anchor plate 15 is attached to the upper rail 6, the webbing 16 is inserted into the space S surrounded by the seat back 3, the seat cushion 2, and the stay 8, and the buckle 17 is arranged on the upper surface side of the seat cushion 2. .

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention particularly relates to a seat belt mounting structure provided on a rear seat or the like of a four-wheel vehicle.

[0002]

2. Description of the Related Art Conventionally, a seat belt 53 for holding an occupant seated on a seat cushion 52 is attached to a rear seat 51 of a four-wheeled vehicle as shown in FIG. The seat belt 53 includes a buckle 54 having a belt detachable lock mechanism and a tongue 55 that is inserted into and removed from the buckle 54. The buckle 54 is arranged at a position where the tongue 55 can be easily inserted, and a seat cushion is provided. It must be held on the seat cushion 52 without falling from the seat cushion 52.

Therefore, in the conventional rear seat 51, the buckle 54 is held on the seat cushion 52 by various means as shown in FIGS. 7 to 9, for example. Of these, the holding means shown in FIG. 7 is a rubber band 56 provided on the seat cushion 52, and the rubber band 56 holds down the buckle webbing 57 to hold the buckle 54 on the seat cushion 52. Has become. The holding means shown in FIG. 8 is a slit 58 provided on the rear upper surface of the seat cushion 52, and the buckle 54 is held on the seat cushion 52 by inserting the buckle webbing 57 into the slit 58. Has become. Further, the holding means shown in FIG. 9 is a holder 59 having an L-shaped cross section which is provided upright on the side portion of the seat cushion 52, and the buckle webbing 57 is inserted into the insertion hole 60 of the holder 59. The buckle 54 is held on the seat cushion 52.

[0004]

As described above, in the conventional rear seat 51, when holding the buckle 54 of the seat belt 53, only the holding function as shown in FIGS. 7 to 9 is provided. Since a separate part or a holding means having a different structure is required, there is a problem that the cost is increased and the weight is increased. In addition, the holder 59 shown in FIG.
Since there is a possibility of contact with a seated occupant, it is necessary to take measures to prevent this, which may cause a problem such as a further increase in cost.

The present invention has been made in view of such circumstances, and an object thereof is to reliably prevent the buckle or tongue from falling off without using a separate part or a separate structure, and An object of the present invention is to provide a seat belt mounting structure in which the tongues can be arranged at positions where they can be easily inserted into each other.

[0006]

In order to solve the problems of the above-mentioned prior art, in the present invention, the rear portion of the seat cushion is rotatably attached to the lower portion of the seat back via a connecting member, and the seat cushion is rotated. An upper end of a front leg is rotatably attached to a lower part of a front side of the vehicle, a lower end of the front leg is rotatably attached to a vehicle body floor side, and an extension portion is integrally provided at a lower end of the seat back. In the seatbelt mounting structure, the extension part is rotatably mounted on the vehicle body floor side, and when the seatback is tilted forward, the seat cushion is slid forward and downward. A buckle or tongue is provided at one end of the webbing that constitutes the part, and the buckle or tongue is fixed to the vehicle body floor side at the other end of the webbing. An anchor plate is provided, the anchor plate is attached to the vehicle body floor side, the webbing is inserted into the space surrounded by the seat back, the seat cushion, and the connecting member, and the buckle or the upper side of the seat cushion is inserted. The tongue is placed.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will now be described in detail based on the illustrated embodiments.

1 to 4 show an embodiment of a seat belt mounting structure according to the present invention. In the figure, 1 is a vehicle seat arranged in a vehicle compartment such as a four-wheeled vehicle.
As shown in FIG. 1, the rear seat 1 is a rear seat provided on the rear part of the vehicle. The rear seat 1 includes a seat cushion 2 on which an occupant sits and a seat back 3 for receiving the back of the occupant. A seat belt 4 that holds an occupant seated on the seat cushion 2 is attached to the rear seat 1.

In the rear seat 1, as shown in FIGS. 3 and 4, the seat back 3 can be tilted forward, and when the seat back 3 is tilted forward, the seat cushion 2 slides forward and downward (tilt down). It is a type of sheet. Therefore, the rear seat 1 is provided on the vehicle body floor 7 via the lower rails 5 and the upper rails 6 of the seat mounting member, and the upper rails 6 are slidably installed on the lower rails 5 fixed to the vehicle body floor 7. There is. Further, a lower part of the seat back 3 is rotatably attached to a rear part of the seat cushion 2 through a cushion stay (connecting member) 8 having a substantially L shape in a side view, and the left and right front sides of the seat cushion 2 are attached. The upper ends of the front legs 9 are rotatably attached to the lower portions.
The lower ends of the front legs 9 are rotatably attached to the upper rails 6 on the vehicle body floor 7 side.

Further, at the lower end of the seat back 3, there is integrally provided an extension portion 10 of a hinge portion which is rotatably connected to the rear end of the seat cushion 2, and the extension portion 10 is mounted on the vehicle body floor. The seat cushion 2 is rotatably attached to the upper rail 6 on the seventh side, and when the seat back 3 is tilted forward, the seat cushion 2 slides forward and downward. Moreover, a hinge cover 11 that covers the extension portion 10 is attached to the extension portion 10, and the hinge cover 11 is disposed on a contact surface between a buckle webbing described below and the extension portion 10.

On the other hand, as shown in FIGS. 1 and 2, the seat belt 4 is taken out from a retractor (not shown) provided on the vehicle body side through a guide ring 12 so that the seat belt 4 can be wound up, and the seat cushion 2 can be secured. A tongue webbing 13 fixed to the side body floor 7 and the like, a tongue (slutung) 14 provided in the middle of the tongue webbing 13, and one end fixed to the upper rail 6 on the vehicle body floor 7 side via an anchor plate 15. The buckle webbing 16 and the buckle 17 provided at the other end of the buckle webbing 16 are provided. The buckle 17 has a lock mechanism for attaching and detaching the belt.
The seat belt 4 is attached and detached by inserting and removing the tongue 14 from the seat 7. The anchor plate 15 is attached and fixed to the outer surface of the upper rail 6.

Further, the buckle webbing 1 of the present embodiment.
6 is inserted into a space S surrounded by the seat back 3, the seat cushion 2 and the cushion stay 8, and its position is restricted by the hinge cover 11, the cushion 2 and the cushion stay 8, and the buckle 17 on the front end side.
Is always arranged on the upper surface side of the seat cushion 2. This space S is formed by the anchor plate 15
The size of the anchor plate 1 is set so that the buckle 17 cannot be inserted and the buckle 17 cannot be inserted.
5 can be installed without any trouble and seat cushion 2
The buckle 17 is prevented from falling from the seat cushion 2 with the sliding movement of. Moreover, the space S is configured to be adjustable in size by appropriately changing the size of the hinge cover 11, so that the space S can accommodate buckles 17 of various sizes.

In order to attach the buckle webbing 16 of the seat belt 4 to the seat attaching member by the attachment structure according to the embodiment of the present invention, first, the buckle webbing 1 is attached.
6, the anchor plate 15 on the one end side is inserted into the space S, and in this state, the anchor plate 15 is attached to the outer surface of the upper rail 6 by tightening with bolts or the like. Then, the position of the buckle webbing 16 is regulated by the hinge cover 11, the cushion 2, and the cushion stay 8, and the buckle 17 on the other end side is arranged on the upper surface side of the seat cushion 2, and the work of attaching the seat belt 4 is performed. Will end (see FIGS. 1 and 2).

Seat belt 4 according to an embodiment of the present invention
In the mounting structure of No. 1, the anchor plate 15 is provided at one end of the buckle webbing 16 and the buckle 17 is provided at the other end of the buckle webbing 16, the anchor plate 15 is attached to the upper rail 6, and the seat back 3, the seat cushion 2, and the cushion stay are attached. Since the buckle webbing 16 is inserted into the space S surrounded by 8 and the buckle 17 is arranged on the upper surface side of the seat cushion 2, the seat back 3 of the rear seat 1 of the type that slides forward and downward is tilted forward. Therefore, even if the seat cushion 2 slides forward and downward, the buckle 17 does not drop below the seat cushion 2,
The buckle 17 can always be placed at a position where the tongue 14 can be easily inserted. Therefore, in the mounting structure of the present embodiment, it is not necessary to provide a separate part and structure dedicated to preventing the buckle 17 from falling off, so that it is possible to reduce the weight and cost and avoid contact with the occupant by the separate part. it can.

Further, in the mounting structure of this embodiment, the anchor plate 15 can be inserted through the space S surrounded by the seat back 3, the seat cushion 2, and the cushion stay 8, and the buckle 17 cannot be inserted. The size of the space S is adjustable by changing the size of the hinge cover 11 by providing the hinge cover 11 on the extending portion 10 of the seat back 3. Therefore, by appropriately selecting the size of the hinge cover 11, it is possible to easily deal with buckles 17 of various sizes.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above-mentioned embodiments, and various modifications and changes can be made based on the technical idea of the present invention. is there.

For example, the mounting structure of the present invention can be applied to the tongue webbing 13 as shown in FIG. 5, in which case the tongue webbing 13 is surrounded by the seat back 3, the seat cushion 2 and the cushion stay 8. The tongue 14 on the tip side is inserted into the space S and is always arranged on the upper surface side of the seat cushion 2. Therefore, the tongue 14 can be easily inserted into the buckle 17. Further, in the mounting structure of the present invention, the seat mounting member may be fixed to the vehicle body floor 7 instead of being configured to be slidable by the lower rail 5 and the upper rail 6.

[0018]

As described above, in the seatbelt mounting structure according to the present invention, the rear portion of the seat cushion is rotatably mounted to the lower portion of the seatback through the connecting member, and the front portion is attached to the lower front portion of the seat cushion. The upper ends of the legs are rotatably attached, and the lower ends of the front legs are rotatably attached to the vehicle body floor side. An extension portion is integrally provided at the lower end of the seat back, and the extension portion is attached to the vehicle body floor. When the seat back is tilted forward and the seat back is tilted forward, the seat cushion is mounted on a vehicle seat that slides forward and downward, and at one end of a webbing forming a part of the seat belt. Provide a buckle or tongue,
An anchor plate for fixing the buckle or the tongue to the vehicle body floor side is provided at the other end of the webbing, the anchor plate is attached to the vehicle body floor side, and a space surrounded by the seat back, the seat cushion, and the connecting member. Since the webbing is inserted into the portion and the buckle or the tongue is arranged on the upper surface side of the seat cushion, the buckle or the tongue is dropped from the seat cushion by the operation such as the seat back being moved forward or the seat cushion being slid. This ensures that the buckle and tongue can be always placed in positions where they can be easily inserted into each other, and there is no need to provide a separate part and structure dedicated to preventing the buckle and tongue from falling off, and it is possible to suppress an increase in weight and cost. .

[Brief description of drawings]

FIG. 1 is a perspective view showing an entire rear seat to which a seat belt mounting structure according to an embodiment of the present invention is applied.

2 is an enlarged perspective view showing an X portion in FIG. 1. FIG.

FIG. 3 is a side view showing a state in which a seat back of the rear seat in FIG. 1 is upright.

FIG. 4 is a side view showing a state in which the seat back of the rear seat in FIG. 1 is tilted forward.

FIG. 5 shows a modification of the embodiment of the present invention,
It is a perspective view which shows the X section corresponding to FIG.

FIG. 6 is a perspective view showing a rear seat to which a conventional seat belt mounting structure is applied.

FIG. 7 is an enlarged perspective view showing a Y portion of Conventional Example 1 in FIG.

8 is an enlarged perspective view showing a Y portion of Conventional Example 2 in FIG.

9 is an enlarged perspective view showing a Y portion of Conventional Example 3 in FIG.

[Explanation of symbols]

1 rear seat 2 seat cushion 3 seat back 4 seat belts 5 Lower rail 6 Upper rail 7 Body floor 8 Cushion stay (connecting member) 9 front legs 10 Extension 11 hinge cover 12 Guide ring 13 tongue webbing 14 tongue 15 anchor plate 16 buckle webbing 17 buckles S space section

   ─────────────────────────────────────────────────── ─── Continued front page    F term (reference) 3B087 BA02 BB02 BC09 BD01 CA11                       DE06                 3D018 CA09

Claims (3)

[Claims] 1. A rear portion of a seat cushion is rotatably attached to a lower portion of a seat back via a connecting member, and upper ends of front legs are rotatably attached to a front lower portion of the seat cushion, and the front portion is also attached. When the lower ends of the legs are rotatably attached to the vehicle body floor side, an extension portion is integrally provided at the lower end of the seat back, and the extension portion is rotatably attached to the vehicle body floor side, and the seat back is tilted forward, In a seat belt mounting structure in which the seat cushion is mounted on a vehicle seat that slides forward and downward, a buckle or a tongue is provided at one end of a webbing forming a part of the seat belt, and the other end of the webbing is provided with the buckle or tongue. An anchor plate for fixing the buckle or the tongue to the vehicle body floor side is provided, the anchor plate is attached to the vehicle body floor side, and A seatbelt mounting structure, wherein the webbing is inserted into a space surrounded by the seat back, the seat cushion, and the connecting member, and the buckle or the tongue is disposed on an upper surface side of the seat cushion. 2. The seat according to claim 1, wherein the space portion is set to a size through which the anchor plate can be inserted and through which the buckle and the tongue cannot be inserted. Belt mounting structure. 3. The extending portion of the seat back is provided with a cover, and the size of the space can be adjusted by changing the size of the cover. The seatbelt mounting structure according to claim 1 or 2.