JP2012030715A - Vehicle seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to shorten a seat cushion length of a seat cushion and at the same time easily secure a high hip point.
SOLUTION: A seat cushion body 12 is connected to and held at a front end position of the main body by a connecting and holding means, and a rear side seat cushion main body (main body) 12-2 including a butt support surface 12-2a. And formed separately. A front end seat surface 12-1a that forms a seat cushion front end portion of the seat cushion by continuously disposing the front end portion on the seat surface of the main body, and an opposing face that is disposed opposite to the front surface of the main body when connected to the front end position of the main body It is formed by arranging the pad material around the core material and covering the pad material with the cover material in a substantially triangular shape having the surface 12-1b, the front end seating surface, and the inclined surface 12-1c connecting the opposing surfaces. ing. A seating surface auxiliary portion 12-1d having a predetermined thickness that can be placed on at least the buttocks support surface of the main body extends continuously from one end of the inclined surface 12-1c and is integrally formed.
[Selection] Figure 6

Description

  The present invention relates to a vehicle seat capable of changing a seat cushion length.

  The size of a car seat is usually set according to the average physique of an adult, so if a seated person with a small physique, for example a small woman, sits with his back against the seat back, The back position may not come forward from the front end of the seat cushion, and the knee may be difficult to bend during pedal operation. Therefore, a configuration is known in which the seat cushion length in the front-rear direction of the seat cushion can be changed as a seat of an automobile or the like so as to be able to accommodate a seated person with a small physique (for example, JP-T-2007-512177). JP, 2010-094159, A).

In the configuration disclosed in Japanese Patent Publication No. 2007-512177, the front end portion of the seat cushion is formed using a plurality of plates divided in the front-rear direction as pad support members, and the folding shape of the front end portion is changed. The seat cushion seat length can be changed.
In JP 2010-094159 A, a movable block with a rack is attached to a movable portion of a seat cushion frame on which a front half portion of a seat cushion central portion is placed. Then, the driving force of the motor provided in the fixed block is transmitted to the gear train, and by rotating the gear meshing with the rack, the movable block moves in the front-rear direction to change the length of the center portion of the seat cushion. ing.

In this way, the seat surface length before and after the seat cushion, especially the length of the front end of the seat cushion, can be changed to be shorter than the normal seat surface length, so that a seated posture where a seated person with a small physique bends the knee can be used comfortably. Therefore, an appropriate seating posture can be easily secured.
In particular, in Japanese Patent Application Laid-Open No. 2010-094159, the seat surface height (hip point) is increased simultaneously with the shortening of the seat surface length before and after the seat cushion, so that it is preferable for a small seated person with a low viewpoint. The posture can be easily secured.

Special table 2007-512177 gazette JP 2010-094159 A

By the way, in the configuration disclosed in JP-T-2007-512177, the seat pad is supported from below by the divided plate, and the seat cushion seat length is changed by changing the folding state of the plate. The thickness of the seat pad is likely to be limited, and there is a risk that sufficient elasticity cannot be obtained at the front end portion of the seat cushion. Since the limitation of the pad thickness at the front end of the seat cushion is accompanied by a decrease in the elastic support for the seated person's thigh, the seat cushion seat length is set to a normal length (normal length). In this case, there is an undeniable risk of giving the seated person discomfort or fatigue due to the feeling of bottoming of the thigh.
In addition, the configuration disclosed in JP-T-2007-512177 merely changes the seating surface length of the seat cushion, and the seating surface height does not change. Usually, a seat occupant uses a cushion to raise his / her hip point. However, a separate cushion may cause a displacement with respect to the seat cushion, and the possibility that the stability at the time of sitting may be impaired cannot be denied. .
In the configuration disclosed in Japanese Patent Application Laid-Open No. 2010-094159, the seat surface height (hip point) is moved up and down with the change of the seat cushion seat length. Each of the movable blocks is provided with a rack, and the guide rail is provided on a movable and fixed block, and the configuration tends to be complicated.

  An object of the present invention is to provide a vehicle seat that can shorten the seating surface length of a seat cushion and can easily secure a high hip point.

  For the above purpose, according to the vehicle seat of the present invention according to claim 1, the seat cushion includes a rear side seat cushion body including the bottom support surface, and a front end of the seat cushion body by the connection holding means. A front end seat surface which is formed separately from a front end portion connected and held in position, and the front end portion thereof is continuously arranged on the seat cushion body seat surface to form a seat cushion front end portion of the seat cushion; Pads around the core material in a substantially triangular shape having a facing surface disposed opposite to the front surface of the seat cushion body when the cushion body is connected to the front end position, and a slope connecting the front end seating surface and the facing surface. A seating surface auxiliary portion of a predetermined thickness that can be placed on at least the buttocks support surface of the seat cushion body, and is formed by the placement of the material and the pad material covered with the cover material It is integrally formed to extend continuously from one end face to the rear. And, by setting the front end seating surface of the front end to the upper surface side and arranging the seating surface auxiliary part at the lower part of the seat cushion, a long seat cushion having a normal seating surface length is formed and the front end is inverted The front end seating surface is set to the lower surface side, and the seating surface auxiliary part is fixedly placed on the seating cushion body seating surface, so that the slope is continuously tilted forward on the seat cushion body seating surface. A short seat cushion having a short seating surface length and a high seating surface can be formed.

  According to claim 2 of the present invention, the connection holding means includes at least two support rods extending from the opposing surface of the front end portion, and a seat cushion body that allows the support rods to be inserted and held. In combination with a corresponding number of holders provided on the front surface, the holder is provided with a locking tool that can hold the support rod semi-fixed by locking.

  According to claim 3 of the present invention, the seating surface auxiliary portion at the front end portion has a hook at the rear end, and the hook is engaged with a hook receiving member disposed at the rear end portion of the seat cushion body. By stopping, the seating surface auxiliary portion is fixedly connected to the seat cushion main body when the short seat cushion having the slope of the front end portion on the upper surface side is formed.

In the present invention according to claim 1, since the front end portion of the seat cushion can be formed by the placement of the pad material around the core material and the covering of the pad material with the cover material, a sufficient pad thickness is provided at the front end portion. Since it can be ensured, the elastic supporting force of the front end portion of the seat cushion in the normal length is reliably improved. And because the seat cushion seat length can be shortened by turning the front end upside down, it is possible to reduce the size of a small woman or the like without complicating the configuration or complicating the work. The seat cushion seat surface length can be shortened for a small seated person.
Furthermore, when the seat cushion seating surface length is shortened by turning the front end upside down, the seating surface auxiliary part that is continuous with the slope is fixedly placed on the seating surface of the seat cushion body. The height of the seating surface can be increased in addition to the shortening of the seating surface length.

  Further, in the present invention according to claim 2, since the connecting and holding means is embodied as a combination of two support rods and a corresponding holder, appropriate mounting and holding are possible without complicating the configuration. Can be secured easily.

  Further, in the present invention according to claim 3, since it is sufficient that the hook of the seating surface auxiliary portion is locked to the hook receiving member at the rear end portion of the seat cushion, an easy and reliable connection is sufficiently possible.

It is a schematic side view of the vehicle seat which concerns on one Example of this invention in a elongate seat cushion. FIG. 2 is a schematic exploded perspective view of a vehicle seat with a front end portion separated from a seat cushion main body. It is a schematic longitudinal cross-sectional view of the front-end part containing the side view of a holder. It is a schematic perspective view of the vehicle seat in a long seat cushion. It is a schematic side view of the vehicle seat with a short seat cushion. It is a schematic perspective view of the vehicle seat with a short seat cushion.

  The seat cushion is separately formed into a seat cushion body on the rear side including the buttocks support surface and a front end portion connected and held at the front end position of the seat cushion body by the connection holding means. The front end portion of the seat cushion body is continuously arranged on the seat cushion body seat surface to form a seat cushion front end portion of the seat cushion, and the seat cushion main body of the seat cushion main body when connected to the front end position of the seat cushion main body. Arrangement of the pad material around the core material and covering of the pad material with the cover material in a substantially triangular shape having a facing surface opposed to the front surface, a front face seating surface, and a slope connecting the facing surfaces. In addition, a seating surface auxiliary portion having a predetermined thickness that can be placed on at least the buttocks support surface of the seat cushion main body is continuously formed extending from one end of the inclined surface to the rear.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is a schematic side view of a vehicle seat according to an embodiment of the present invention with a long seat cushion, and FIG. 2 is a schematic exploded perspective view of the vehicle seat in a state in which a front end portion is separated from a seat cushion main body. FIG. 3 is a schematic longitudinal sectional view of the front end portion including a side view of the holder. As shown in these drawings, in the vehicle seat 10 of the present invention, the front end portion 12-1 of the seat cushion 12 is the rear half seat. It is formed separately from the cushion body 12-2, and the front end of the seat cushion body is configured to be upside down (upside down).

  As shown in FIGS. 1 and 2, the vehicle seat 10 includes, for example, a combination of a seat cushion 12 and a seat back 14. The seat cushion 12 and the seat back 14 have, for example, a plane rectangular seat frame member as a skeleton, and a seat pad is disposed on an elastic support member installed in the seat frame, and the seat pad and the seat frame are covered with a trim cover. (None of them are shown). The basic configurations of the seat cushion 12 and the seat back 14 are well known, and the basic configurations themselves are not the gist of the present invention, and thus detailed description thereof is omitted here.

  In the present invention, the front end portion 12-1 of the seat cushion 12 is formed separately from the seat cushion body 12-2. The seat cushion body 12-2 is defined as the rear side of the seat cushion 12 including the buttocks support surface 12-2a, and the seat back 14 is connected to the seat cushion body. The front end 12-1 is detachably attached to the seat cushion body 12-2.

  The front end portion 12-1 of the seat cushion is continuously disposed on the seat surface 12-2b of the seat cushion main body 12-2, thereby forming a front end seat surface 12-1a that forms a seat surface front end portion of the seat cushion 12, and a seat cushion. Side face substantially triangular shape which has the opposing surface 12-1b arrange | positioned facing the front surface 12-2c of a seat cushion main body at the time of the connection holding | maintenance to the front-end position of a main body, and the inclined surface 12-1c which connects this front-end seat surface and opposing surfaces. Formed.

  As shown in FIG. 3, the front end portion 12-1 is formed by the arrangement of the pad material 18 around the core material 16 and the covering of the cover material 20 on the pad material. Since the structure of the headrest can be used as it is, a detailed description thereof is omitted here.

  In this embodiment, the core member 16 of the front end portion 12-1 is a flat substantially U-shaped stay, and a pair of left and right leg portions of the stay are extended as support rods 22 from the facing surface 12-1b of the front end portion. I am letting.

  As shown in FIG. 2, the front surface 12-2c of the seat cushion body is provided with a holder 24 through which the support rod 22 at the front end is inserted. The number of the holders 24 corresponding to the number of the support rods 22 is provided. In this embodiment, the holders 24 are provided at two locations corresponding to the two support rods.

  As shown in FIG. 3, in this embodiment, the combination of the support rod 22 at the front end and the holder 24 of the seat cushion body is used as a connection holding means, and the support rod is held by the holding tool of the connection holding means. It is configured to be connected and held in a semi-fixed manner. As this locking tool, for example, a substantially U-shaped spring member 26 wound around a holder can be exemplified. By fitting this spring member into the circumferential groove 22a of the support rod 22, the support rod is engaged with the holder. It can be stopped.

  1 and 4 show a state in which the front end seating surface 12-1a of the front end portion is set on the upper surface side. This state in which the front end seating surface 12-1a of the front end portion is continuously disposed on the seating surface 12-2b of the seat cushion body is a length corresponding to the average physique of an adult having the normal seating surface length of the seat cushion 12. It becomes a shank seat cushion.

  As described above, since the front end portion 12-1 in the present invention has a headrest mode in which the pad material 18 is disposed around the core material 16, the pad material can be formed with a sufficient thickness, and thus has a high elastic support force. The front end can be secured. Therefore, the feeling of bottoming at the time of use as a long seat cushion can be eliminated, and thus comfort is improved.

  From this state, if the front end portion 12-1 is pulled forward by a force that releases the locking of the support rod 22 and the holder 24, that is, a force that resists the biasing force of the spring member 26, the space between the support rod and the holder Is released, and the front end is pulled out of the seat cushion body as shown in FIG. Then, the front end portion 12-1 is turned upside down (rotated 180 degrees; turned upside down), the front end seat surface 12-1a is set to the lower surface side, the support rod 22 is inserted into the holder 24, and locked. 5. A short seat cushion having a short seat surface length is formed by continuously arranging the inclined surface 12-1c as shown in FIG. 6 on the seat surface 12-2b of the seat cushion body in a forwardly inclined state.

  In this short seat cushion, since the seat surface length as the seat cushion 12 is substantially the seat surface length of the seat cushion body 12-2, as shown in FIG. Even a person can easily secure a sitting posture with his knees bent.

  Thus, according to the present invention, a short seat cushion that can be adapted to a seated person with a small physique can be formed without being accompanied by a decrease in the elastic supporting force of the front end portion 12-1 when used as a long seat cushion. .

  And in this invention, since the form is only changed by the insertion / extraction of the front-end part 12-1, a structure can be simplified and the operativity is also improved reliably.

  Here, as shown in FIG. 6, in the present invention, the seat surface auxiliary portion 12-1d having a predetermined thickness that can be placed on at least the buttocks support surface 12-2a of the seat cushion body is formed on the inclined surface 12-1c. It is integrally formed extending continuously from one end to the rear. For example, a hook (not shown) is provided at the rear end of the seating surface auxiliary portion 12-1d, and the hook is locked to a hook receiving member provided at the rear end portion of the seat cushion, such as a wire. Thus, the seating surface auxiliary portion is fixedly connected to the seat cushion body 12-2.

  With such a configuration, when the seat cushion is used as a short seat cushion, not only the seat cushion is shortened, but also the seat surface auxiliary portion 12-1d is mounted on the buttocks support surface 12-2a of the seat cushion body. Since the hip point and thus the viewpoint of the seated person are raised, the appropriate seating posture of the small seated person can be easily ensured in this respect as well.

  When the seat cushion with the front end seating surface 12-1a at the front end set on the upper surface side is used, the seating surface auxiliary portion 12-1d at the front end is, for example, as shown in FIGS. It is stored along the lower surface of the seat cushion body 12-2.

  Further, in this embodiment, the connection holding means is embodied as a combination of the support rod 22 made of stay and the holder 24, but the front end portion 12-1 is connected to the seat cushion body 12-2 so as to be seated. It is sufficient if it can be held, and it is not limited to this configuration. However, if the connecting and holding means is a combination of the support rod 22 and the holder 24, a known structure for use in the headrest can be applied. Therefore, there is a configuration that can be appropriately mounted and held without complicating the configuration. Can be easily provided.

  The above-described embodiments are for explaining the present invention, and are not intended to limit the present invention. All modifications, alterations and the like within the technical scope of the present invention are included in the present invention. Needless to say.

  The present invention is normally used as a front seat of an automobile seat, but is not limited to this, and can be applied to a second seat and a third seat. Further, for example, other vehicle seats such as trains, airplanes, ships, etc. You may apply to.

DESCRIPTION OF SYMBOLS 10 Vehicle seat 12 Seat cushion 12-1 Front end part 12-1a-12-1d Front end seat surface, opposing surface, slope, seat surface auxiliary part 12-2 Seat cushion main body 12-2a Bottom part support surface 22 Support rod 24 Holder

Claims (3)

A vehicle seat having a seat cushion and a seat back,
The seat cushion is separately formed into a rear side seat cushion body including a butt support surface and a front end portion connected and held at the front end position of the seat cushion body by the connection holding means,
The front end portion of the seat cushion body is continuously arranged on the seat cushion body seat surface to form a seat cushion front end portion of the seat cushion, and the seat cushion main body of the seat cushion main body when connected to the front end position of the seat cushion main body. Arrangement of the pad material around the core material and covering of the pad material with the cover material in a substantially triangular shape having a facing surface opposed to the front surface, a front face seating surface, and a slope connecting the facing surfaces. And a seating surface auxiliary portion having a predetermined thickness that can be placed on at least the buttocks support surface of the seat cushion body, is formed integrally with the rear surface continuously extending from one end of the slope,
By setting the front end seating surface of the front end portion on the upper surface side and arranging the seating surface auxiliary portion at the lower part of the seat cushion, a long seat cushion having a normal seating surface length is formed, and the front end portion is inverted upside down, The front end seating surface is set on the lower surface side, and the seating surface auxiliary portion is fixedly placed on the seating surface of the seat cushion body, so that the slope is continuously arranged in a forward tilted state on the seating surface of the seat cushion body. A vehicle seat characterized in that a short seat cushion having a short seating surface length and a high seating surface can be formed. The connection holding means includes at least two support rods extending from the opposing surface of the front end portion, and a corresponding number of holders provided on the front surface of the seat cushion body that allows the support rods to be inserted and held. The vehicle seat according to claim 1, wherein the holder is a combination, and the holder has a locking member that can hold the support rod by locking. The seating surface auxiliary portion at the front end has a hook at the rear end, and the front end is inclined to the upper surface side by engaging the hook with a hook receiving member disposed at the rear end of the seat cushion body. The vehicle seat according to claim 1, wherein when the short seat cushion disposed on the seat cushion is formed, the seating surface auxiliary portion is fixedly connected to the seat cushion main body.

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