JP2010279650A - Vehicle seat device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicle seat device capable of stably moving a movable cushion forward/backward. <P>SOLUTION: A cushion body 8 is fixed to a frame unit 6, and the movable cushion 10 is attached to the frame unit 6 in such a way as movable in the longitudinal direction. The frame unit 6 has upper support walls 16 and 13 on which the movable cushion 10 is mounted, and front walls 17 an 14 extending downward from the front end of the upper support walls 16 and 13. The movable cushion 10 has a cushion base 20 supported on the upper support walls 16 and 13 and a downward extension part 21 extending downward from the front end of the cushion base 20. A bag body 38 is interposed between the front walls 17 and 14 of the frame unit 6 and the downward extension part 21 of the movable cushion 10. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a vehicle seat device that can freely adjust the longitudinal length of a seat cushion that supports the occupant's buttocks and thighs.

A vehicle seat device has been devised in which a separate movable cushion is arranged in front of the cushion body of the seat cushion so that the movable cushion can be moved back and forth according to the physique of the occupant seated. (For example, see Patent Documents 1 and 2).
In this seat device, a movable cushion is disposed on the front side of the cushion body so as to be movable back and forth, and a bag body that is inflated and adjusted by air pressure is interposed between the front surface of the cushion body and the rear surface of the movable cushion. In this seat device, the movable cushion is retracted by bringing the bag into a contracted state, and the movable cushion is displaced to the front position by inflating the bag.

JP-A-63-87336 JP 2008-143364 A

  However, in this conventional seat device, since the bag body which is the bulging means is interposed between the front surface of the cushion body and the rear surface of the movable cushion, the movable cushion is expanded by inflating the bag body. When the vehicle is moved forward, the support reaction force of the bag body acts on the soft cushion body, which tends to cause the operation of the movable cushion to become unstable.

  Therefore, the present invention is intended to provide a vehicle seat device capable of obtaining a stable advance / retreat operation of a movable cushion.

The invention according to claim 1, which solves the above problem, is a cushion support member (for example, a frame unit 6 in an embodiment described later) of a seat cushion and a cushion main body (for example, described later) fixed to the cushion support member. Cushion body 8) in the embodiment, a movable cushion that can move back and forth with respect to the cushion body (for example, movable cushion 10 in the embodiment described later), and a bag body that bulges by introduction of fluid and moves the movable cushion (For example, a bag body 38 in an embodiment described later), the cushion support member is an upper support wall (for example, an upper support wall in an embodiment described later) on which the movable cushion is placed. 13 and 16) and a front wall extending downward from the front end of the upper support wall (for example, Front walls 14, 17) in the above-described embodiment, and the movable cushion includes a downward extension portion (for example, a downward extension portion 21 in an embodiment described later) extending downward from the front end portion, The bag is characterized in that it is interposed between the front wall and the downward extension.
In the case of this invention, when extending the longitudinal length of the seat cushion, the bag body is expanded by introducing the fluid, and the downward extending portion of the movable cushion is pressed forward by the bag body. At this time, the bag body presses the movable cushion forward while the back portion is supported by the front wall of the cushion support member, and the movable cushion moves to a predetermined position ahead.

According to a second aspect of the present invention, in the vehicle seat device according to the first aspect, the movable cushion includes a column portion extending rearward from a downwardly extending portion (for example, a side frame portion 24b in an embodiment described later). And a guide pipe (for example, a guide pipe 28 in an embodiment described later) extending rearward is provided on the back side of the front wall of the cushion support member, and the column portion extends along the inner periphery of the guide pipe. And is slidably supported.
As a result, when the movable cushion moves back and forth, the support portion on the movable cushion side is guided by the guide pipe.

According to a third aspect of the present invention, in the vehicle seat device according to the second aspect, a substantially spherical slider (for example, in an embodiment described later) is slidably in contact with the inner surface of the guide pipe. A slider 34) is provided.
Thereby, the support | pillar part contacts the inner surface of a guide pipe by a substantially spherical slider part, and moves along a guide pipe in that state.

According to a fourth aspect of the present invention, in the vehicle seat device according to the second or third aspect, the guide pipe is attached to the lower surface of the upper support wall via a bracket (for example, a bracket 32 in an embodiment described later). It is characterized by being.
As a result, the guide pipe is arranged at a position that is difficult to see from the outside below the upper support wall.

  According to the first aspect of the present invention, the bag body is interposed between the downwardly extending portion of the movable cushion and the front wall of the cushion support member, and the cushion support has a high reaction force when the bag body is actuated. Since it is supported by the front wall of the member, a stable forward and backward operation of the movable cushion can always be obtained.

  According to the second aspect of the invention, since the support portion on the movable cushion side is guided by the guide pipe on the cushion support member side, the advance / retreat operation of the movable cushion can be further stabilized.

  According to the third aspect of the present invention, since the column portion is in sliding contact with the inner surface of the guide pipe via the substantially spherical slider, the sliding resistance between the column portion side and the guide pipe is reduced, and smoother movement is possible. The operation of the cushion can be obtained.

  According to the fourth aspect of the present invention, since the guide pipe is attached to the lower surface of the upper support wall of the cushion support member via the bracket, the guide pipe is hardly visible from the outside, and the appearance quality can be improved. .

1 is a perspective view of a seat device according to an embodiment of the present invention. It is sectional drawing corresponding to the AA cross section of FIG. 1 of the sheet | seat apparatus of one Embodiment of this invention. It is a perspective view showing some components of a sheet device of one embodiment of this invention. It is a perspective view showing some components of a sheet device of one embodiment of this invention. It is sectional drawing corresponding to the AA cross section of FIG. 1 of the sheet | seat apparatus of one Embodiment of this invention.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the following description, unless otherwise specified, front and rear and top and bottom refer to front and rear and top and bottom of a vehicle.
FIG. 1 is a perspective view showing the overall structure of a vehicle seat device 1 of this embodiment. The seat device 1 is a separator-type seat on the driver's seat side or on the passenger seat side.
As shown in the figure, the seat device 1 supports a seat cushion 2 that supports the occupant's buttocks and thighs, a seat back 3 that supports the occupant's shoulders to the waist, and the occupant's head. The seat cushion 2 is attached to the vehicle body via a seat rail 5 so as to be movable back and forth. The seat back 3 is hinged to the rear end portion of the seat cushion 2 at its lower end portion so as to be tiltable, and the headrest 4 is attached to the upper end portion of the seat back 3 so as to be adjustable up and down.

2 to 5 show a specific internal structure of the seat cushion 2.
As shown in these drawings, the seat cushion 2 is formed by assembling a cushion unit 7 on an upper portion of a frame unit 6 (cushion support member) constituted by a metal pipe material, a plate material, a spring material, and the like. The cushion unit 7 is movable in the front-rear direction to the cushion body 8 that supports the occupant's buttocks to the main region of the thigh, the side supports 9 disposed on both sides of the cushion body 8, and the front end of the cushion body 8. And a movable cushion 10 disposed. The cushion body 8 and the side support 9 are fixed to the frame unit 6.

  As shown in FIG. 2, the front end of the cushion body 8 and the front edge of the frame unit 6 that supports the movable cushion 10 are a metal skeleton panel 11 and a resin cover fixed to the skeleton panel 11 in a superposed state. 15.

The front edge of the skeletal panel 11 bulges upward in a step shape on the front of the general wall 12 that supports the central side of the cushion body 8, and the upper support wall 13 is connected to the front edge of the upper support wall 13. A front wall 14 bent downward at a substantially right angle is continuously provided.
The resin cover 15 has an upper support wall 16 that is superposed on the upper surface of the upper support wall 13 of the skeleton panel 12, and is bent downward from a front end portion of the upper support wall 16 to be in front of the front wall 14 of the skeleton panel 12. A front wall 17 to be superposed, and a lower edge wall 18 extending downward after protruding forward from the lower end of the front wall 17 are provided. The lower edge wall 18 extends to the vicinity of the floor surface of the vehicle body so as to hide the space below the movable cushion 10 from the front side.

The cushion body 8 and the left and right side supports 9 are fixedly installed on the skeleton panel 11 and the resin cover 15, and the movable cushion 10 is slidably mounted on the skeleton panel 12 and the upper support walls 13 and 16 of the resin cover 15. ing.
The movable cushion 10 includes a cushion base portion 20 placed on the upper support walls 13 and 16 and a lower extension portion 21 that is bent and extended downward in a substantially L shape from the front end portion of the cushion base portion 20. I have. The back surface of the downward extending portion 21 faces the front surface of the front wall 17 of the resin cover 15. In the movable cushion 10, the outer surface side of the thick cushion body 22 is covered with a skin material 23 such as cloth or leather like the cushion body 8 and the side support 9. A metal core plate 25 is embedded in the cushion body 22 of the movable cushion 10 so as to straddle the cushion base portion 20 and the downward extension portion 21, and the cushion body 20 of the downward extension portion 21 is substantially omitted. A U-shaped columnar frame 24 is embedded.
The columnar frame 24 is embedded in the cushion body 20 of the downward extending portion 21 along the vehicle width direction, and is disposed from the frame base portion 24a disposed on the front surface of the core metal plate 25, and both ends of the frame base portion 24a. A side frame portion 24b (a column portion) that extends toward the rear side of the vehicle body, and the distal end portions of the side frame portions 24b on both sides protrude from the downward extension portion 21 to the outside.

  Further, the side frame portions 24b on both sides extending rearward from the downward extending portion 21 penetrate the resin cover 15 and the front walls 17 and 14 of the skeleton panel 11, and the rear of these front walls 17 and 14 are inserted. Protrudes to the side. The front wall 17 of the resin cover 15 is provided with a boss portion 26 that is fitted through the front wall 14 of the skeleton panel 11 in a penetrating manner, and a bush 27 and a guide pipe 28 are fitted into the boss portion 26. ing.

  The bush 27 is formed of a resin material, and includes a guide hole 29 into which the side frame portion 24b of the columnar frame 24 is inserted, and a cylindrical receiving wall 30 into which the guide pipe 28 is fitted to the outer peripheral surface. A locking claw 31 is projected from the outer peripheral surface of the receiving wall 30.

The guide pipe 28 is formed by joining a resin pipe 28B to the inner peripheral side of a metal pipe base 28A, and a metal bracket 32 is coupled to the outer surface of the pipe base 28A. The left and right guide pipes 28 are attached to the lower surface of the upper support wall 13 of the skeleton panel 11 via brackets 32.
A locking hole 33 is formed at one edge of the resin pipe 28B in the guide pipe 28, and when the guide pipe 28 is fitted into the gap between the boss portion 26 and the bush 27, the receiving wall of the bush 27 is formed. A locking claw 31 provided on 30 is engaged with the locking hole 33.

In each guide pipe 28 attached to the upper support wall 13 of the skeleton panel 11, a side frame portion 24 b penetrating the front walls 17 and 14 and the bush 27 is inserted.
A substantially spherical slider 34 is attached to the tip of each side frame portion 24 b, and a return spring 35 is interposed between the slide 34 and the bush 27. The slider 34 is formed of a resin material, and the outer peripheral surface thereof is slidably fitted to the inner peripheral surface of the guide pipe 28 (resin pipe 28B). In the figure, reference numeral 36 denotes a locking ring for preventing the slider 34 from coming off from the front end portion of the side frame portion 24. The return spring 35 is constituted by a coil spring, and is arranged so as to be substantially coaxial with the peripheral region of the side frame portion 24b.

  Further, a triple bellows-structured bag body 38 is interposed between the front surface of the front wall 17 of the resin cover 15 and the back surface of the downward extending portion 21 of the movable cushion 10. The bag body 38 constitutes bulging means for bulging and displacing the movable cushion 10 forward, expands the volume by introducing air from the outside, and moves the downwardly extending portion 21 of the movable cushion 10 forward from the back side. It is designed to be pressed. The bag body 38 is disposed at the center in the width direction of each frame portion 24b of the columnar frame 24 in order to press the movable cushion 10 uniformly.

  In the seat device 1, air is not introduced into the bag body 38 in the initial state, and the movable cushion 10 is retracted to the maximum by receiving the force of the return spring 35 as shown in FIG. 2. In this state, the bag body 38 is almost completely folded in a bellows shape, and the downward extending portion 21 of the movable cushion 10 is maintained in a state of being close to the front walls 17 and 14 of the frame unit 6.

  When the position of the movable cushion 10 is adjusted to the front side from this state, air is introduced into the bag body 38 from the outside. When air is introduced into the bag body 38, as shown in FIG. 5, the bag body 38 bulges and presses the downward extending portion 21 of the movable cushion 10 forward from the back side. Thus, the movable cushion 10 is slid forward by receiving a pressing force from the bag body 38 while the side frame portion 24 b of the columnar frame 24 is guided by the guide pipe 28. At this time, the pressing reaction force of the bag body 38 is supported by the front walls 17 and 14 of the frame unit 6 at the position just behind the downward extending portion 21, and the slider 34 portion is guided by the left and right side frame portions 24b. Slide in the pipe 28. Further, when the slider 34 moves forward in this way, the return spring 35 is compressed in the guide pipe 28 and the return reaction force against the movable cushion 10 is increased. 5 shows a state in which the movable cushion 10 is slid forward at the maximum, and even in this state, the rear end of the cushion base 20 of the movable cushion 10 is located behind the front ends of the upper support walls 13 and 16. Therefore, the bag body 38 cannot be seen from the outside, and the appearance quality does not deteriorate. At this time, it is preferable that the upper surface of the upper support wall 16 of the resin cover 15 is used as a decorative surface by, for example, squeezing.

  Further, when returning the position of the movable cushion 10 from this state to the initial position, the air inside the bag body 38 is evacuated, and the movable cushion 10 is retracted to the initial position by the force of the return spring 35.

  As described above, in the case of the seat device 1, the lower extension portion 21 facing the front walls 17 and 14 on the frame unit 6 side is provided at the front end portion of the movable cushion 10, and the lower extension portion 21 and the front portion are provided. Since the bag body 38 is interposed between the walls 17 and 14, the bulging reaction force of the bag body 38 is reliably received by the front walls 17 and 14 of the frame unit 6 having high rigidity. Therefore, in the seat apparatus 1, a stable advance / retreat operation of the movable cushion 10 can always be obtained.

  In the seat device 1, side frame portions 24 b extending rearward from both side portions of the movable cushion 10 are provided, and each side frame portion 24 b is guided by a guide pipe 28 attached to the skeleton panel 11. Because of the structure, the advance / retreat operation of the movable cushion 10 can be further stabilized.

In particular, in the case of the seat device 1, since the substantially spherical slider 34 that is in sliding contact with the inner peripheral surface of the guide pipe 28 is provided at the tip of the side frame portion 24b, the side frame portion 24b side and the guide pipe 28 are provided. And the smooth operation of the movable cushion 10 can be obtained.
Furthermore, in this embodiment, since the guide pipe 28 has a structure in which the resin pipe 28B is joined to the inner peripheral side of the metal pipe base 28A, the guide pipe 28 is formed on the inner peripheral surface of the resin pipe 28B having a low sliding resistance. The slider 34 is always in contact. Therefore, this is advantageous for smooth operation of the movable cushion 10.

  Further, in the seat device 1 of this embodiment, the return spring 35 that urges the movable cushion 10 in the backward direction is disposed coaxially with the side frame portion 24b inside the guide pipe 28. The urging force always acts along the axis of the side frame 24b. Therefore, this is advantageous for smoothly moving the movable cushion 10 backward.

  In the seat device 1, the guide pipe 28 that guides the side frame portion 24 b on the movable cushion 10 side is attached to the lower surface of the upper support wall 13 of the skeleton panel 11 via the bracket 32. 28 cannot be seen from the outside, and the appearance quality is not deteriorated.

  In addition, this invention is not limited to said embodiment, A various design change is possible in the range which does not deviate from the summary.

6. Frame unit (cushion support member)
8 ... Cushion body 10 ... Movable cushion 10
13, 16 ... Upper support wall 14, 17 ... Front wall 21 ... Downward extension part 24b ... Side frame part (post part)
28 ... Guide pipe 32 ... Bracket 34 ... Slider 38 ... Bag

Claims (4)

A cushion support member for the seat cushion;
A cushion body fixed to the cushion support member;
A movable cushion movable back and forth with respect to the cushion body;
In a vehicle seat device comprising: a bag body that bulges by introduction of fluid and moves the movable cushion;
The cushion support member includes an upper support wall on which the movable cushion is placed, and a front wall extending downward from a front end portion of the upper support wall,
The movable cushion includes a downward extending portion extending downward from a front end portion,
The vehicle seat device according to claim 1, wherein the bag body is interposed between the front wall and a downward extending portion. The movable cushion is provided with a support column extending backward from the downward extending portion,
A guide pipe extending rearward is provided on the back side of the front wall of the cushion support member,
The vehicle seat device according to claim 1, wherein the support portion is slidably supported along the inner periphery of the guide pipe.   The vehicle seat device according to claim 2, wherein a substantially spherical slider that is slidably in contact with an inner surface of the guide pipe is provided in the support column.   4. The vehicle seat device according to claim 2, wherein the guide pipe is attached to a lower surface of the upper support wall via a bracket.

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