Vehicle seat

Abstract

Provided is a vehicle seat that can be stored in a recess (4) of a floor (F), and has an expanded variation of use states.　A vehicle seat (S1) according to the present invention is provided with: a seat cushion (2); a front leg part (10) that supports a front lower part of the seat cushion (2), and has one end (10a) pivotally secured to the front lower part of the seat cushion, and another end (10b) detachably secured at a location in front of the recess (4); a rear leg part (11) that supports a rear lower part of the seat cushion (2), and has one end (11a) pivotally secured to the rear lower part of the seat cushion (2), and another end (11b) pivotally secured to the floor (F) inside the recess (4); and an arm part (12) having one end (12a) pivotally secured to the rear leg part (11), and another end (12b) securable to the floor (F) at a location in rear of the other end (11b) of the rear leg part (11).

Description

Technical Field

[0001] The present invention relates to a vehicle seat, and more particularly to a vehicle seat that can be stored in a recess formed in the floor of a vehicle.

Background Art

[0002] Conventionally, a structure for storing a vehicle seat in a recess formed in the floor using a link arm is known (for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] The vehicle seat described in Patent Document 1 can be switched between two states, a use state and a storage state, but the adjustment of the position of the seat on which a person sits in the use state is not considered. In recent years, it has been required to form a comfortable space even in the vehicle interior, and it is desirable that a seat that can be stored in a floor recess also has various use states.

[0005] The present invention has been made in view of the above problems, and an object thereof is to provide a vehicle seat that can be stored in a recess in the floor and has an expanded variation in use states.

Means for Solving the Problems

[0006] A vehicle seat that can be stored in a recess formed in the floor of a vehicle, comprising a seat cushion, a front leg portion that supports the lower front portion of the seat cushion, one end of which is rotatably fixed to the lower front portion of the seat cushion and the other end of which is detachably fixed to the floor at a position in front of the recess, a rear leg portion that supports the lower rear portion of the seat cushion, one end of which is rotatably fixed to the lower rear portion of the seat cushion and the other end of which is rotatably fixed to the floor inside the recess, and an arm portion, one end of which is rotatably fixed to the rear leg portion and the other end of which can be fixed to the floor at a position behind the other end of the rear leg portion. , the arm part is fixed inside the recess of the floor This is solved by

[0007] By detaching the front leg portion from the floor, moving the seat cushion backward, and then fixing the arm portion to the floor, the seat can be moved backward in a seated state, and the variations in the usage state can be expanded.

[0008] Further, in the above vehicle seat, a front fixing portion provided on the front side of the front side wall portion of the recess for fixing the other end of the front leg portion to the floor, a rear fixing portion provided inside the recess for fixing the other end of the rear leg portion to the floor, and an arm fixing portion provided behind the rear fixing portion for fixing the other end of the arm portion to the floor are preferably provided. By providing an arm fixing portion on the floor, it becomes possible to fix the seat more firmly in the state where the seat is moved backward.

[0009] Further, in the above vehicle seat, the length of the arm portion is preferably shorter than the length of the rear leg portion. By making the length of the arm portion shorter than the length of the rear leg portion, in the state where the arm portion is fixed to the floor, the height of the seat can be made lower than in the normal state, and the variations in the usage state can be expanded.

[0010] In the above vehicle seat, the other end of the arm portion is preferably fixed to be slidable in the front-rear direction with respect to the arm fixing portion. By slidably fixing the other end of the arm portion to the arm fixing portion, it is possible to adjust and fix the position of the seat in the front-rear direction and the height position, and it is possible to expand the variations in the usage state.

[0011] In the vehicle seat described above, it is preferable that the other end of the arm part is movably provided so as to change the distance between the other end of the arm part and the rear leg part.

[0012] In the above vehicle seat, It is provided on the front side of the front side wall portion of the recess, a front fixing portion for fixing the other end of the front leg portion to the floor, a rear fixing portion provided inside the recess for fixing the other end of the rear leg portion to the floor, and an arm fixing portion provided behind the rear fixing portion for connecting the other end of the arm portion to the floor. The arm fixing portion can change the position for fixing the other end of the arm portion is good 。

[0013] In the above vehicle seat, The length of the arm part is shorter than the length of the rear leg part, and the rotation axis of the arm part is provided between the rotation axis on the floor side of the rear leg part and the rotation axis on the seat cushion side of the rear leg part. is good 。

[0014] In the vehicle seat described above, it is preferable that the other end of the arm part is slidably fixed in the front-rear direction with respect to the arm fixing portion. Also, in the vehicle seat described above, a plurality of strikers are arranged in the front-rear direction on the floor as the arm fixing portion, and the other end of the arm part is preferably connected to the floor by locking to any one of the plurality of strikers. Also, in the vehicle seat described above, the arm part is preferably attached to face the rear surface of the rear leg part in the front-rear direction.

Advantages of the Invention

[0015] According to the present invention, after detaching the front leg portion from the floor and moving the seat cushion backward, by fixing the arm portion to the floor, the seat can be moved backward in a state where it can be seated, and the variations in the usage state can be expanded. Also, by providing an arm fixing portion on the floor, it becomes possible to fix the seat more firmly in a state where the seat is moved backward. By making the length of the arm portion shorter than the length of the rear leg portion, in a state where the arm portion is fixed to the floor, the height of the seat can be made lower than in the normal state, and the variations in the usage state can be expanded. Also, by slidably fixing the other end of the arm portion to the arm fixing portion, it is possible to adjust and fix the position of the seat in the front-rear direction and the height position, and it is possible to expand the variations in the usage state. By providing a flap on the back surface of the seat back and using the back surface of the seat back as a seating surface and the flap as a backrest, the variations in the usage state can be expanded. By deploying the folded cover portion provided between the seat back and the flap, the area of the seating surface can be expanded, and the variations in the usage state can be increased. By providing an airbag between the flap and the wall portion, the inclination amount of the flap can be adjusted, making the inclination amount of the flap appropriate and increasing the variations in the usage state. By forming at least one of the front legs and the rear legs so as to be telescopic, the position in the front-rear direction and the height position of the seat can be adjusted and fixed, and the variations in the usage state can be increased.

Brief Description of the Drawings

[0016]

Figure 1A

Figure 1B

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Modes for Carrying Out the Invention

[0017] <<First Embodiment>> Hereinafter, the configuration of the vehicle seat according to the first embodiment of the present invention will be described with reference to the drawings. However, the embodiments described below are for facilitating the understanding of the present invention and do not limit the present invention. That is, the present invention can be changed and improved without departing from its gist, and it goes without saying that equivalents of the present invention are included therein. In addition, in the following description, the content regarding the material, shape, and size of the components constituting the vehicle seat is merely one specific example and does not limit the present invention.

[0018] Note that hereinafter, as an example of the vehicle seat, a vehicle seat S1 provided in a passenger vehicle such as a minivan will be cited, and a configuration example thereof will be described. In addition, in the following description, the "front-rear direction" refers to the front-rear direction of the vehicle seat and coincides with the traveling direction of the vehicle when the vehicle is running. The seat width direction is the lateral width direction of the vehicle seat S1 and coincides with the left-right direction as viewed from the occupant seated on the vehicle seat S1. The "up-down direction" refers to the up-down direction of the vehicle seat S1 and coincides with the vertical direction when the vehicle is traveling on a horizontal plane. Also, when simply referred to as "outer side", it refers to the side closer to the outside in the direction from the center of the vehicle seat alone, and when referred to as "inner side", it means the side closer to the center in the direction from the outside to the center of the vehicle seat alone.

[0019] As shown in FIG. 1, the vehicle seat S1 is placed on the floor F of the vehicle and is a seat on which the vehicle occupant sits. In the present embodiment, the vehicle seat S1 is a rear seat corresponding to the rear seat of the vehicle. Note that it can also be used as the middle seat in the second row or the 3rd seat in the third row in a vehicle equipped with three rows of seats in the vehicle front-rear direction. It may also be used as a front seat corresponding to the front seat.

[0020] As shown in FIG. 1, the vehicle seat S1 includes a seat body having a seat back 1, a seat cushion 2, and a headrest 3. The vehicle seat S1 is also provided with a reclining device (not shown) that rotatably connects the seat back 1 to the seat cushion 2.

[0021] As shown in FIG. 1, the seat back 1 is a backrest portion that supports the occupant's back from behind. A cushion pad P is placed on a back frame (not shown) serving as a skeleton and is covered with a skin T. The seat cushion 2 is a seating portion that supports the occupant from below. A cushion pad P is placed on a cushion frame (not shown) serving as a skeleton and is covered with a skin T. The headrest 3 is a head portion that supports the occupant's head from behind. A cushion pad P is placed on a pillar (not shown) serving as a core material and is covered with a skin T. The cushion pad P is a urethane base material molded by foam molding using, for example, a urethane foam material, and the skin T is made of a skin material such as cloth, synthetic leather, or genuine leather.

[0022] The vehicle seat S1 can be arranged in two forms: a use state shown in FIG. 1 where the occupant can sit, and a storage state shown in FIG. 2 where the seat body is stored in the recess 4 on the floor. It is also possible to move the seat body in a state where it can be seated and change the height and the position in the front-rear direction of the seat cushion 2.

[0023] When storing the vehicle seat S1 in the use state in the recess 4, the occupant pulls the operation strap, causing the seat back 1 to fall forward toward the seat cushion 2 and fold. Then, the folded seat body is moved rearward of the seat and moved in the direction of sinking. Thereby, the seat body is stored in the recess 4.

[0024] As described above, the vehicle seat S1 is a seat that can be stored in the recess 4 formed in the floor F of the vehicle. As shown in FIG. 1, the seat cushion 2 is provided with one front leg portion 10 and two rear leg portions 11, and they support the seat body. The front leg portion 10 supports the lower front portion of the seat cushion 2, and the upper end portion 10a, which is one end of the front leg portion 10, is rotatably fixed at the lower front portion of the seat cushion 2. Further, the lower end portion 10b, which is the other end of the front leg portion 10, is detachably fixed to a striker 13 (front fixing portion) provided on the floor F at a position in front of the front side wall portion 4a of the recess 4.

[0025] Further, the rear leg portion 11 supports the lower rear portion of the seat cushion 2, and the upper end portion 11a, which is one end of the rear leg portion 11, is rotatably fixed at the lower rear portion of the seat cushion 2. Also, the lower end portion 11b, which is the other end of the rear leg portion 11, is rotatably fixed to the floor F inside the recess 4. Since the rear fixing portion 14 is rotatably fixed, after releasing the lock of the lower end portion 10b of the front leg portion 10 and removing the lower end portion 10b from the striker 13, the seat body can be moved backward and the seat body can be stored in the recess 4.

[0026] The vehicle seat S1 of the present embodiment includes an arm portion 12 on the rear leg portion. One end of the arm portion 12, that is, the upper end portion 12a, is rotatably fixed to the rear leg portion 11. Also, the lower end portion 12b, which is the other end, can be fixed to the floor F at a position behind the lower end portion 11b of the rear leg portion 11. As shown in FIG. 1A, the fixing of the lower end portion 12b can be achieved by providing a plurality of strikers 15 as arm fixing portions on the floor F and locking the position of the lower end portion 12b of the arm portion 12 with the striker 15.

[0027] Using FIG. 3, the operation of changing the form of the vehicle seat S will be described. In the normal state, as shown in the upper part of FIG. 3, the lower end portion 10b of the front leg portion 10 is fixed to the striker 13, and the seat body is supported by the front leg portion 10 and the rear leg portion 11. As shown in the middle part of FIG. 3, unlock the lock of the lower end portion 10b of the front leg portion 10 and remove the lower end portion 10b from the striker 13. As a result, it becomes possible to tilt the rear leg portion 11 backward and move the seat body backward. At this time, release the lock for fixing the arm portion 12 and rotate it backward. As shown in the lower part of FIG. 3, by fixing the lower end portion 12b of the arm portion 12 to the striker 15, the arm portion 12 becomes a strut that supports the rear leg portion 11, and the position of the seat body is fixed.

[0028] Furthermore, when lowering the height of the seat body, fix the lower end portion 12b of the arm portion 12 to the striker 15 located further backward. Thus, according to the vehicle seat S1 of the present embodiment, the height and position of the seat body can be changed in a state where a person can sit, and the variations in the usage state can be expanded.

[0029] Also, as can be seen from FIGS. 1 and 3, the length L2 of the arm portion 12 is formed to be shorter than the length L1 of the rear leg portion 11. By shortening the length of the arm portion 12, when the rear leg portion 11 is supported by the arm portion 12 as shown in the lower part of FIG. 3, the height of the seat body can be made lower than the normal height.

[0030] Also, the fixing of the arm portion 12 by the striker 15 is an example. As shown in FIG. 1B, a slide rail 15a may be provided on the bottom surface of the concave portion 4, and the lower end portion 12b of the arm portion 12 may be slidably fixed in the front-rear direction. By slidably fixing the lower end portion 12b of the arm portion 12, the front-rear position and height of the seat body can be adjusted more finely. In the present embodiment, when the lower end portion 12b of the arm portion 12 slides backward, the seat body moves backward and the height also decreases.

[0031] <<Second Embodiment>> The vehicle seat S2, which is the second embodiment of the present invention, will be described with reference to FIGS. 4 to 8. FIG. 4 is an explanatory diagram showing the operation of the vehicle seat S2 of the second embodiment, FIG. 5 is a diagram showing the locking mechanism, and FIG. 6 is an explanatory diagram showing the operation of another example of the vehicle seat S2. FIGS. 7 and 8 are diagrams showing another example of the vehicle seat S2.

[0032] Similar to the vehicle seat S1 of the first embodiment, the vehicle seat S2 is a seat placed on the floor F and on which a vehicle occupant sits, and is a seat that can be stored in a recess 4 formed in the floor F of the vehicle. The seat body (seat back 1, seat cushion 2, and headrest 3) is the same as that of the vehicle seat S1 of the first embodiment, and thus the description thereof will be omitted.

[0033] Similar to the front leg portion 10 of the first embodiment, the front leg portion 10A supports the lower front portion of the seat cushion 2, and the upper end portion 10Aa, which is one end of the front leg portion 10A, is rotatably fixed at the lower front portion of the seat cushion 2. Further, the lower end portion 10Ab, which is the other end of the front leg portion 10A, is detachably fixed to a striker 13A (front fixing portion) provided on the floor F at a position in front of the front side wall portion 4a of the recess 4.

[0034] The rear leg portion 11A supports the lower rear portion of the seat cushion 2, and the upper end portion 11Aa, which is one end of the rear leg portion 11A, is rotatably fixed at the lower rear portion of the seat cushion 2. Further, the lower end portion 11Ab, which is the other end of the rear leg portion 11A, is rotatably fixed to the floor F inside the recess 4. Since the rear fixing portion 14A is rotatably fixed, after releasing the lock of the lower end portion 10Ab of the front leg portion 10A and removing the lower end portion 10Ab from the striker 13, the seat body can be moved rearward to store the seat body in the recess 4.

[0035] Further, the vehicle seat S2 includes a flap 16 attached to the back surface portion of the seat back 1 so as to be rotatable in the front-rear direction.

[0036] As shown in the upper part of FIG. 4, the seat back 1 is tilted forward with respect to the seat cushion 2. The upper end portion 10Aa of the front leg portion 10A is rotatably fixed at the lower front portion of the seat cushion. As shown in the middle part of FIG. 4, the lock of the lower end portion 10Ab of the front leg portion 10A is released, the lower end portion 10Ab is removed from the striker 13A, and the seat body is moved rearward to store the seat body in the recess 4.

[0037] After storing the seat body, with the seat back tilted forward, the flap 16 provided on the back surface of the seat back 1 is erected. By erecting the flap 16, the back surface of the tilted forward seat back 1 can be used as a seating surface, and the erected flap 16 can be used as a backrest. In order to keep the flap 16 in an erected state, as shown in FIG. 5, the flap 16 may be locked using a lock mechanism 22 provided on a back frame 21 used when locking the vehicle seat S2 in a tipped-up state. It becomes possible to sit on the vehicle seat S2 even in the stored state, and the variations in the use state are expanded.

[0038] FIG. 6 shows another example of the vehicle seat S2 of the second embodiment. As shown in the upper part of FIG. 6, in the state where the seat back 1 is erected, a cover portion 17 folded between the back surface portion of the seat back 1 and the flap 16 is provided on the vehicle seat S2a shown in FIG. 6.

[0039] As shown in the middle part of FIG. 6, after tilting the seat back 1 forward and storing the seat body in the recess, as shown in the lower part of FIG. 6, the flap 16 is erected. Then, the folded cover portion 17 is unfolded. By unfolding the cover portion 17 to form a seating surface, the seating surface extends as shown in the lower part of FIG. 6. By extending, the area of the seating surface expands, and the variations in the use state are expanded.

[0040] Further, when there is a wall portion 20 such as a rear gate behind the concave portion 4 as in the vehicle seat S2b shown in FIG. 7, an airbag 18 which is an airbag capable of expanding or contracting may be provided between the flap 16 and the wall portion 20. The airbag 18 protrudes from the wall portion 20 and supports the flap 16. By adjusting the amount of air in the airbag 18, the tilt amount of the flap in the front-rear direction can be adjusted.

[0041] Also, as in the vehicle seat S2c shown in FIG. 8, an air chair 19 may be attached to the back surface portion of the seat back 1 instead of the flap 16. By inflating the air chair 19 with the seat body stored in the concave portion 4, it can be used as a seat with a different seating surface height, and the variations in the usage state are expanded.

[0042] <<Third Embodiment>> The vehicle seat S3 which is the third embodiment of the present invention will be described with reference to FIG. 9. FIG. 9 is an explanatory view showing the operation of the vehicle seat S3 of the third embodiment. The vehicle seat S3 is a seat placed on the floor F and on which a vehicle occupant sits, similar to the vehicle seat S1 of the first embodiment, and is a seat that can be stored in a concave portion 4 formed in the floor F of the vehicle. Since the seat body (seat back 1, seat cushion 2, and headrest 3) is the same as that of the vehicle seat S1 of the first embodiment, the description thereof will be omitted. The vehicle seat S3 includes a front leg portion 10B different from the front leg portion 10 of the vehicle seat S1 of the first embodiment.

[0043] As shown in the upper part of FIG. 9, the front leg portion 10B of the vehicle seat S3 supports the front lower part of the seat cushion 2. The upper end portion 10Ba which is one end of the front leg portion 10B is rotatably fixed at the front lower part of the seat cushion 2, and the lower end portion 10Bb which is the other end is rotatably fixed at the rear inner side of the concave portion 4 by the front fixing portion 13B. As shown in the upper part of FIG. 9, the rear side leg portion 11B of the vehicle seat S3 supports the front lower part of the seat cushion 2. The upper end portion 11Ba, which is one end of the rear side leg portion 11B, is rotatably fixed at the rear lower part of the seat cushion 2, and the lower end portion 11Bb, which is the other end, is rotatably fixed at the front inner side of the recess 4 by the rear side fixing portion 14B.

[0044] The front side leg portion 10B is formed to be telescopic and can be locked at a predetermined or arbitrary position. As shown in the middle part of FIG. 9, by pulling up the lever 23 provided in front of the seat cushion 2 (rotating in the direction of arrow A), the lock of the front side leg portion 10B is released, and the length of the front side leg portion 10B can be changed (in the direction of arrow B). By shortening the front side leg portion 10B and tilting the rear side leg portion 11B backward, the seat body can be moved backward and the height can be lowered. As shown in the lower part of FIG. 9, it can be used by locking and fixing the telescopic movement of the front side leg portion 10B at a desired position.

[0045] If the length of the front side leg portion 10B is further shortened, it is also possible to store the seat body in the recess 4. In this way, the vehicle seat S3 can be used as a seat with a different seating surface height, and the variations in the usage state are expanded.

[0046] In the vehicle seat S3 of the present embodiment, the front side leg portion 10B is formed to be telescopic, but the rear side leg portion 11B may also be formed to be telescopic. In this case, it will move from the rear to the front of the recess 4. Also, both the front side leg portion 10B and the rear side leg portion 11B may be formed to be telescopic.

[0047] The vehicle seat of the present embodiment has been described above with reference to the drawings. The present invention is not limited to the vehicle seat mounted on a ground - running vehicle having wheels such as an automobile or a railway vehicle. For example, it can also be applied to seats mounted on aircraft or ships that move other than on the ground.

Explanation of reference numerals

[0048] S1, S2 to S2c, S3 Vehicle Seat (Automobile Seat) 1 Seat Back 2 Seat Cushion 3 Headrest 4 Recess 4a Front Wall Portion T Skin P Cushion Pad F Floor 10, 10A, 10B Front Leg Portions 10a, 10Aa, 10Ba Upper End Portions (One End) 10b, 10Ab, 10Bb Lower End Portions (The Other End) 11, 11A, 11B Rear Leg Portions 11a, 11Aa, 11Ba Upper End Portions (One End) 11b, 11Ab, 11Bb Lower End Portions (The Other End) 12 Arm Portion 12a Upper End Portion (One End) 12b Lower End Portion (The Other End) 13, 13A Striker 13B Front Fixing Portion 14, 14A, 14B Rear Fixing Portions 15 Striker 15a Slide Rail 16 Flap 17 Cover Portion 18 Airbag 19 Air Chair 20 Wall Portion 21 Back Frame 22 Lock Mechanism 23 Lever

Claims

1. A vehicle seat that can be stored in a recess formed in the floor of a vehicle, comprising: a seat cushion; a front leg portion that supports the lower front side of the seat cushion, one end of which is rotatably fixed to the lower front side of the seat cushion, and the other end of which is detachably fixed to the floor at a position in front of the recess; a rear leg portion that supports the lower rear side of the seat cushion, one end of which is rotatably fixed to the lower rear side of the seat cushion, and the other end of which is rotatably fixed to the floor inside the recess; an arm portion having one end rotatably fixed to the rear leg portion and the other end fixable to the floor at a position behind the other end of the rear leg portion; The vehicle seat is characterized in that the arm portion is fixed inside the recess of the floor.

2. A front fixing portion provided on the front side of the front side wall portion of the recess for fixing the other end of the front leg portion to the floor; A rear fixing portion provided inside the recess for fixing the other end of the rear leg portion to the floor; The vehicle seat according to claim 1, further comprising an arm fixing portion provided behind the rear fixing portion and capable of fixing the other end of the arm portion to the floor.

3. The vehicle seat according to claim 1, wherein the length of the arm portion is shorter than the length of the rear leg portion.

4. The vehicle seat according to claim 2, wherein the other end of the arm portion is slidably fixed in the front-rear direction with respect to the arm fixing portion.

5. The vehicle seat according to claim 1, wherein the other end of the arm portion is movably provided so as to change the distance between the other end of the arm portion and the rear leg portion.

6. A front fixing portion provided on the front side of the front side wall portion of the recess for fixing the other end of the front leg portion to the floor; A rear fixing portion provided inside the recess for fixing the other end of the rear leg portion to the floor; An arm fixing portion provided behind the rear fixing portion for connecting the other end of the arm portion to the floor, The vehicle seat according to claim 5, wherein the arm fixing portion is capable of changing the position for fixing the other end of the arm portion.

7. The length of the arm portion is shorter than the length of the rear leg portion, The rotation axis of the arm portion is provided between the rotation axis on the floor side of the rear leg portion and the rotation axis on the seat cushion side of the rear leg portion. The vehicle seat according to claim 5, characterized in that.

8. The other end of the arm portion is fixed to be slidable in the front-rear direction with respect to the arm fixing portion. The vehicle seat according to claim 6, characterized in that.

9. A plurality of strikers are arranged in the front-rear direction on the floor as the arm fixing portion. The other end of the arm portion is connected to the floor by locking to any one of the plurality of strikers. The vehicle seat according to claim 6, characterized in that.

10. The arm portion is attached to face the rear surface of the rear leg portion in the front-rear direction. The vehicle seat according to claim 6, characterized in that.

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