JP2000185580A - Vehicle seat structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To form a footrest for a rear-seat occupant by a seat back of a front seat, and in particular, enable the rear-seat occupant to put his/her leg(s) (a part excluding the knee(s)) on the seat back of the front seat, thereby assuring sufficient relaxation, by dividing the seat back of the front seat into two portions, upper and lower portions so that the upper portion is swingable with respect to the lower portion in the longitudinal direction of the vehicle, and making the upper portion adjustable so that the upper end thereof is located near the front end of a seat cushion of the rear seat. SOLUTION: In this vehicle seat structure which includes a rear seat 6 as well, a seat back 9 of a front seat 5 having a reclining mechanism 8 is divided into two portions: an upper portion 11 and a lower portion 12 so that the upper portion 11 is swingable with respect to the lower portion 12 in the longitudinal direction of the vehicle. The upper portion 11 is adjustable so that the upper end thereof is located near the front end of a seat cushion 14 of the rear seat 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle seat structure in which an occupant (rear seat occupant) seated on a rear seat forms a footrest on a front seat.

[0002]

2. Description of the Related Art Conventionally, as a vehicle seat structure of the above-mentioned example, there is, for example, a structure described in Japanese Patent Application Laid-Open No. Hei 9-175252.

That is, as shown in FIG. 8, a front seat 93 having a seat cushion 91 and a seat back 92 is provided, and an L-shaped bracket 94 in side view is attached to the back of the seat cushion 91 of the front seat 93. A bolt 95 and a nut 96 are used to bolt up a footrest retainer 97 on the back surface of the bracket 94, and a footrest 99 is rotatably attached to the footrest retainer 97 via a support shaft 98.

The above-mentioned footrest 99 is always urged by a spring in the direction of the imaginary line shown in FIG.
A foot plate 100 is attached to the tip.

According to this conventional structure, when the footrest plate 100 at the virtual line position is rotated rearward with the support shaft 98 as a fulcrum, the foot of the rear passenger can be put on the footrest plate 100, Although it is possible to ensure the relaxedness of the rear seat occupant, there is a problem that only the portion below the ankle can be carried, and sufficient relaxedness cannot be secured.

[0006]

According to the first aspect of the present invention, the seat back of the front seat is divided into an upper portion and a lower portion, and the upper portion swings in the front-rear direction with respect to the lower portion. In the movable structure, the upper portion is adjustable so that the upper end of the upper portion is disposed near the front end of the seat cushion of the rear seat, so that the footrest of the rear occupant can be placed on the seat of the front seat. Provided is a vehicle seat structure which can be formed with a back, and in particular, a leg portion (a portion below a knee) of a rear occupant can be put on a seat back of a front seat, and sufficient relaxation can be ensured. With the goal.

According to a second aspect of the present invention, in addition to the object of the first aspect, when the upper portion rotates backward, the seat surface of the upper portion is the seat cushion surface of the rear seat. The upper part of the seat can be used as a footrest, and the footrest space is widened, allowing a posture that allows the foot to be thrown forward. It is an object of the present invention to provide a vehicle seat structure that can be further improved.

According to a third aspect of the present invention, in addition to the object of the first aspect of the present invention, when the upper portion rotates forward, the upper end of the upper portion is positioned on the seat cushion surface of the rear seat. By making it adjustable so that it is on extension,
It is an object of the present invention to provide a vehicle seat structure capable of securing a substantially U-shaped footrest space for supporting the back side of a knee at an upper end of an upper portion and further improving the relaxability.

According to a fourth aspect of the present invention, in addition to the object of the first, second or third aspect of the present invention, there is provided a seat slide mechanism in which a front seat slides in a front-rear direction. It is an object of the present invention to provide a vehicle seat structure capable of securing a good footrest space by tilting a seat back by a seat slide and a reclining mechanism.

According to a fifth aspect of the present invention, in addition to the object of the second, third or fourth aspect of the present invention, an adjusting means for adjusting the height of the rear seat on the front end side of the seat cushion is provided. By providing the front seat, a step is generated between the front end of the seat cushion of the rear seat and the upper end of the upper portion of the seat back of the front seat in a state where the front seat is fixed (the seat is not slid in the front-rear direction). It is an object of the present invention to provide a vehicle seat structure capable of preventing the occurrence of discomfort when placing a foot.

[0011]

According to the first aspect of the present invention, a seat back of a front seat having a reclining mechanism is further divided into an upper portion and a lower portion. Part of the vehicle is configured to be able to swing forward and backward with respect to the lower part,
The vehicle seat structure is characterized in that the upper portion is adjustable so that the upper end of the upper portion is disposed near the front end of the seat cushion of the rear seat.

According to a second aspect of the present invention, in addition to the configuration of the first aspect of the present invention, when the upper portion rotates backward, the seat surface of the upper portion extends the cushion surface of the rear seat. It is a vehicle seat structure that can be adjusted upward.

According to a third aspect of the present invention, in addition to the configuration of the first aspect of the present invention, when the upper portion rotates forward, the upper end of the upper portion extends the seat cushion surface of the rear seat. It is a vehicle seat structure that can be adjusted upward.

According to a fourth aspect of the present invention, in addition to the configuration of the first, second or third aspect of the present invention, there is provided a vehicle seat structure having a seat slide mechanism in which the front seat slides in the front-rear direction. There is a feature.

According to a fifth aspect of the present invention, in addition to the configuration of the second, third or fourth aspect of the present invention, an adjusting means for adjusting the height of the rear seat on the front end side of the seat cushion is provided. It is the seat structure of the vehicle which was carried out.

[0016]

According to the first aspect of the present invention, the seat back of the front seat, which also has a seat at the rear, is divided into an upper portion and a lower portion, and the upper portion is divided into the lower portion. It is configured to be able to swing back and forth,
Since the upper portion can be adjusted so that the upper end of the upper portion is disposed near the front end of the seat cushion of the rear seat, the upper end of the upper portion is disposed near the front end of the seat cushion of the rear seat. Then, there is an effect that the footrest of the rear seat occupant can be formed by the seat back of the front seat.

As a result, in particular, the legs (portions below the knee) of the rear occupant can be placed on the seat back of the front seat, and sufficient relaxation can be ensured.

According to the invention described in claim 2 of the present invention,
In addition to the effects of the first aspect of the present invention, the seat surface of the upper portion can be adjusted so as to be an extension of the seat cushion surface of the rear seat when the upper portion is rotated backward. The seat surface of the upper portion can be used as a footrest, a footrest space is widened, a posture in which the foot is thrown forward can be achieved, and there is an effect that relaxation can be further improved.

According to the third aspect of the present invention,
In addition to the effect of the first aspect of the present invention, the upper portion of the upper portion can be adjusted so that the upper end thereof is on the extension of the seat cushion surface of the rear seat when the upper portion is rotated forward. An approximately U-shaped footrest space for supporting the back side of the knee at the upper end of the part can be secured, and there is an effect that the relaxation can be further improved.

According to the invention described in claim 4 of the present invention,
In addition to the effects of the invention described in claim 1, 2, or 3,
Since the above-mentioned front seat has a seat slide mechanism that slides in the front-rear direction, a good footrest space is secured by adjusting the front-rear position of the front seat by the seat slide mechanism and adjusting the tilt angle of the seatback by the reclining mechanism. There is an effect that can be.

According to the invention described in claim 5 of the present invention,
In addition to the effect of the invention described in claim 2, 3 or 4, the height of the front end side of the seat cushion of the rear seat is adjusted to the height of the upper end portion of the upper portion rotated backward or forward by the above-described adjusting means. When adjusted together, a step is generated between the front end of the seat cushion of the rear seat and the upper end of the upper portion of the seat back of the front seat when the front seat is fixed (the seat is not slid in the front-rear direction). Can be prevented.

As a result, there is an effect that the feeling of discomfort of the rear occupant when the seat back is used as a footrest can be eliminated.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to the drawings. The drawing shows a vehicle seat structure. In FIG. 1, the vehicle seat structure is such that a front seat 5 as a front seat is disposed on a floor panel 1 via seat mounting brackets 2 and 3 and a seat slide member 4.
A rear seat 6 is disposed behind the front seat 5 as a rear seat.

The front seat 5 has a seat cushion 7 and a seat back 9 which is attached to the seat cushion 7 via a reclining fulcrum 8 so as to be tiltable.
The seat back 9 includes a headrest 10 and is divided into two parts, an upper part 11 and a lower part 12, and the upper part 11 is configured to be swingable in the front-rear direction with respect to the lower part 12.

The headrest 10 has a headrest pole 13 and the headrest 10 is configured to be detachable from the upper part 11. On the other hand, the above-described rear seat 6 includes a seat cushion 14 and a seat back 15.

FIG. 2 shows the internal structure of the seat back 9 in the front seat 5, in which a substantially U-shaped upper frame 17 is provided inside the upper portion 11 (upper seat back).
A substantially U-shaped lower frame 18 is provided in the lower portion 12 (lower seat back). The above upper frame 1
A reinforcing plate 19 is horizontally mounted on the upper part of 7, and brackets 20, 21 are joined and fixed on both lower sides.

A reinforcing member 22 is mounted on the upper portion of the lower frame 18 and a supporting member 23 is fixedly connected to a portion of the reinforcing member 22 corresponding to the bracket 20 on one side. To support the bracket 20 on one side.

Further, a tilting device 24 is mechanically linked to the bracket 21 on the other side, and the tilting device 24 is connected to the lower portion 12.
By rotating the rotating handle 25 that is operated from the outside of the upper part, the upper part 11 can swing back and forth with respect to the lower part 12 (see FIGS. 6 and 7).
The upper portion 11 is adjustable so that the upper end of the upper portion 1 is disposed near the front end of the seat cushion 14 of the rear seat 6. That is, the upper unit 1 is controlled by the tilting device 24 described above.
This constitutes an adjusting means that makes 1 adjustable.
The above-described tilting device 24 is configured as shown in FIGS.

That is, a bracket 26 is joined and fixed to an end of the lower frame 18 on the side opposite to the bracket 21 on the other side, and a plurality of bolts 27 and nuts 28 (however, a set of bolts, A gear base 29 is attached using a nut (only a nut is shown), and an external gear 30 is disposed on the gear base 29.

An eccentric cam 32 of a shaft member 31 is fitted into the inner periphery of the external gear 30. The shaft member 31 has a first shaft portion 33 and a second shaft portion 34 on the left and right sides of the eccentric cam portion 32, and the first shaft portion 33 has an internal gear 35 (internal gear) that always meshes with the above-described external gear 30. Is inserted.

The outer end side of the first shaft portion 33 is connected and fixed to the above-mentioned downwardly extending portion of the bracket 21 using an outer mounting member 36, an inner mounting member 37 and a bolt 38.

The second shaft portion 34 has a locking pin 3
9 or a key, the upper pulley 40 is fitted and fixed, and at the lower position corresponding to the upper and lower pulleys 40, a support bracket 41 is joined and fixed to the lower frame 18, and a bearing 42 is mounted on the support bracket 41. The handle shaft 43 is mounted on the shaft.

The rotary handle 25 is fixed to the outer end of the handle shaft 43 by using an attachment member 44 such as a screw, and a locking pin 45 or a key is provided at a portion of the handle shaft 43 facing the upper pulley 40. The lower pulley 46 is fitted and fixed by using, and a belt 47 is stretched between the upper and lower pulleys 40 and 46.

When the upper portion 11 is swung in the front-rear direction with respect to the lower portion 12 as shown in FIGS. 6 and 7, when the rotary handle 25 is rotated, the rotational force is reduced. Since the shaft member 31 is transmitted from the belt 46 to the upper pulley 40 via the belt 47 to rotate the shaft member 31,
The internal gear 35 rotates eccentrically with respect to the external gear 30, and as a result, the upper part 11 is swung in the front-rear direction with respect to the lower part 12. The above-described tilting device 24 has two gears (an external gear 30 and an internal gear 35) built therein so that the tilting position of the upper portion 11 can be adjusted steplessly.

By the way, as shown in FIG.
Between the seat cushion 14 and the seat back 16, there is provided an inclination angle adjusting device 50 as adjusting means for adjusting the height of the rear seat on the front end side of the seat cushion 14.

As shown in FIG. 5, the tilt angle adjusting device 50 is pivotally supported by an inner bracket 51 fixed to a base side wall of the seat back 16 and a rear portion of the inner bracket 51 by a hinge shaft 52. An outer bracket 54 whose front portion is connected to the rear portion of the side wall of the seat cushion 14 via mounting members 55 and 53, and a sector gear 55 fixed by being interposed between the inner bracket 51 and the outer bracket 54 inside the outer bracket 54.
(A member between the sector gears), a lock gear 57 which is detachably engaged with the sector gear 55 and is pivotally supported by the inner bracket 51 via a hinge shaft 56, and an operation lever 58 pivotally mounted on the hinge shaft 52 described above. ing.

A return spring 59 is stretched between the operation lever 58 and the inner bracket 51, and the operation lever 58 is moved in the direction of arrow a against the urging force of the return spring 59 (so-called spring force). Is operated, the lock release lever 6 fixed to the operation lever 58 is released.
The lock pin 62 protruding from the lock gear 57 is pressed in the unlocking direction of the lock gear 57 on the groove wall surface of the lock groove 61 of the lock gear 57, and the lock gear 57 is unlocked with the hinge shaft 56 as a fulcrum. (In a direction away from the gear portion) to release the lock of the sector gear 55 by the lock gear 57.

On the other hand, a lock pin 63 projecting from the rear side wall of the seat cushion 14 toward the intermediate portion of the outer bracket 54 is provided, and a hook 64 for locking the lock pin 63 is provided.

The hook 64 is urged by a spring (not shown) around the hinge shaft 65 so as to always engage with the lock pin 63, and is connected to the free end side (that is, the free end side) of the hook 64. The lock release lever 60 is connected to the front end side by a connection member 66 made of a flexible material.

Reference numeral 67 denotes an arc-shaped guide groove formed on the outer bracket 54, and reference numeral 68 denotes a stroke regulating pin protruding from the lock gear 57. In order to adjust the inclination angle of the seat cushion 14 with the inclination angle adjusting device 50 configured as described above, the operation lever 58 is operated in the direction indicated by the arrow a in FIG. 5, and the lock gear 57 is disengaged from the sector gear 55.

The outer bracket 54 and the seat cushion 14 are configured to freely rotate about the hinge shaft 52 in this state (under the unlocked state). When the operation lever 58 is released after performing the angle adjustment of
The operation lever 5 is actuated by the urging force of the return spring 59.
8 returns to the lock position shown in the figure, the lock gear 57 meshes with the sector gear 55, and the seat cushion 1 is set at a desired angle.
4 is fixed in an adjusted state.

In FIG. 5, the operation lever 58 is extended from the hinge shaft 52 toward the seat back 16;
It goes without saying that the operation lever 58 may be configured to extend from the hinge shaft 52 toward the seat cushion 14. FIG. 5 corresponds to the inclination angle position of the seat cushion 14 shown in FIGS.

In order to form the footrest of the rear occupant (occupant sitting on the rear seat 6) with the seat back 9 of the front seat 5 in the vehicle seat structure thus configured, the state shown in FIG. 6, the upper part 11 is formed by rotating the rear part backward, and the state shown in FIG. 1 is formed by rotating the upper part 11 forward as shown in FIG.

First, the case of forming a footrest as shown in FIG. 6 from the state of FIG. 1 will be described. In this case, after removing the headrest 10 from the upper portion 11 of the seat back 9, the upper portion 11 and the lower portion 12 of the seat back 9 are tilted rearward about the reclining fulcrum 8, and then the rotation handle 25 of the tilting device 24. Is operated to rotate the upper portion 11 backward, so that the seat surface 11a of the upper portion 11 is adjusted to be substantially extended from the cushion surface 14a of the seat cushion 14 of the rear seat 6.

Further, the seat cushion 1 of the rear seat 6 is adjusted by using the tilt angle adjusting device 50 on the rear seat 6 side.
4 by adjusting the height of the front end side of the seat cushion 1.
4 and the seat surface 11 of the upper part 11
When "a" is substantially flush, a footrest as shown in FIG. 6 is formed.

As a result, the rear seat occupant can take a posture in which his / her feet are projected forward as shown in FIG. 6, and a wide footrest space can ensure good relaxation. Next, a case where a footrest as shown in FIG. 7 is formed from the state of FIG. 1 will be described.

In this case, the headrest 10 is first removed from the upper portion 11 of the seat back 9, and then the upper portion 11 of the seat back 9 is centered on the reclining fulcrum 8.
And the lower portion 12 is tilted rearward, and the rotating handle 25 of the tilting device 24 is operated to rotate the upper portion 11 forward, so that the upper end 11b of the upper portion 11 is formed on the cushion surface 14a of the seat cushion 14 of the rear seat 6. Adjust so that it is almost on the extension.

Further, the height of the front end side of the seat cushion 14 of the rear seat 6 is adjusted by using the inclination angle adjusting device 50 on the rear seat 6 side, so that the seat cushion 14
When the cushion surface 14a and the upper end 11b of the upper portion 11 are substantially flush with each other, a footrest as shown in FIG. 7 is formed.

For this reason, the upper portion 11 of the front seat 5
A substantially square-shaped footrest space for supporting the rear side of the rear occupant's knee at the upper end 11b of the rear occupant can be secured, and the rear occupant's relaxability can be improved.

As described above, according to the vehicle seat structure having the above-described structure, the seat back 9 of the front seat (see the front seat 5) having the seat (see the rear seat 6) also at the rear is attached to the upper part 11 and the lower part 12. The upper part 11 is configured so as to be swingable in the front-rear direction with respect to the lower part 12, and the upper end of the upper part 11 is disposed near the front end of the seat cushion 14 of the rear seat (see the rear seat 6). The upper portion 11 can be adjusted by the tilting device 24 so that the upper end of the upper portion 11 is disposed near the front end of the seat cushion 14 of the rear seat (see the rear seat 6). There is an effect that the foot rest of the seat occupant can be formed by the seat back 9 of the front seat (see the front seat 5).

As a result, the front seat (front seat 5)
(See FIG. 7), the legs (parts other than the knees) of the rear occupant can be put on the seat back 9, and sufficient relaxation can be ensured.

As shown in FIG. 6, when the above-described upper portion 11 is rotated backward, the seat surface 11a of the upper portion 11 is moved to the seat cushion 14 of the rear seat (see the rear seat 6).
Tilting device 2 so that it is on the extension of cushion surface 14a of
4, the seat surface 11a of the upper part 11 can be used as a footrest, so that the footrest space can be widened and a posture in which the foot is thrown forward becomes possible, further improving the relaxation. There is an effect that can be achieved.

Further, as shown in FIG. 7, when the above-mentioned upper portion 11 rotates forward, the upper end 11b of the upper portion 11 is on the extension of the cushion surface 14a of the seat cushion 14 of the rear seat (see the rear seat 6). As described above, the tilting device 24 can be adjusted, so that a substantially F-shaped footrest space for supporting the rear side of the rear occupant's knee at the upper end 11b of the upper portion 11 can be secured, and the relaxation is further improved. There is an effect that can be further improved.

The above-mentioned front seat (front seat 5) is a seat slide mechanism that slides in the front-rear direction.
(See the seat slide member 4), a good foot space is secured by adjusting the front and rear position of the front seat by this seat slide mechanism and adjusting the tilt angle of the seat back 9 by the reclining mechanism (see reclining fulcrum 8). There is an effect that can be.

In addition, the height of the front end of the seat cushion 14 of the rear seat (see the rear seat 6) is rotated backward or forward by the adjusting means (see the tilt angle adjusting device 50). 11, the front end of the seat cushion 14 of the rear seat (see the rear seat 6) in a state where the front seat (see the front seat 5) is fixed (the seat is not slid in the front-rear direction). It is possible to prevent a step from occurring between the upper portion and the upper end of the upper portion 11 of the seat back 9 of the front seat (see the front seat 5).

As a result, there is an effect that it is possible to eliminate the uncomfortable feeling of the rear passenger when the seat back 9 is used as a footrest.

In the correspondence between the structure of the present invention and the above-described embodiment, the front seat of the present invention corresponds to the front seat 5 of the embodiment, and similarly, the reclining mechanism is similar to the mechanism including the reclining fulcrum 8. The seat slide mechanism corresponds to the seat slide member 4, the rear seat corresponds to the rear seat 6, and the upper end of the upper portion is disposed near the front end of the seat cushion of the rear seat. The means for making the part adjustable is the tilting device 24
Although the adjusting means corresponds to the inclination angle adjusting device 50, the present invention is not limited to only the configuration of the above-described embodiment.

For example, in a vehicle having seats in the first to third rows, the seat in the second row is set as the front seat, and the seat in the third row is set as the rear seat. Of course, it may be constituted.

[Brief description of the drawings]

FIG. 1 is a side view showing a seat structure of a vehicle according to the present invention.

FIG. 2 is a front view showing the internal structure of the seat back of the front seat.

FIG. 3 is a sectional view showing a tilting device.

FIG. 4 is a sectional view taken along line AA of FIG. 3;

FIG. 5 is an enlarged side view showing the inclination angle adjusting device.

FIG. 6 is an explanatory diagram of a footrest space formed by turning the upper portion rearward.

FIG. 7 is an explanatory diagram of a footrest space formed by turning the upper part forward.

FIG. 8 is a partial side view showing a conventional footrest structure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 4 ... Seat slide member 5 ... Front seat (front seat) 6 ... Rear seat (rear seat) 8 ... Reclining fulcrum 9 ... Seat back 11 ... Upper part 11a ... Seat surface 11b ... Upper end 12 ... Lower part 14 ... Seat cushion 14a ... Cushion part 50: Inclination angle adjustment device (adjustment means)

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3B087 BA02 BD04 BD08 CB19 3B088 JA02 JB02 3B099 AA05 BA04 CA03 CA17 CA23 CA31 CB06 DA04

Claims (5)

[Claims] A front seat having a reclining mechanism is also divided into an upper portion and a lower portion, and the upper portion is swingable in the front-rear direction with respect to the lower portion. A seat structure for a vehicle, wherein the upper portion is adjustable such that an upper end of the upper portion is disposed near a front end of a seat cushion of a rear seat. 2. The vehicle seat structure according to claim 1, wherein said upper portion can be adjusted so that a seat surface thereof is extended from a cushion surface of a rear seat when said upper portion is rotated rearward. 3. The vehicle seat structure according to claim 1, wherein the upper portion of the upper portion can be adjusted so that the upper end of the upper portion is extended from the seat cushion surface of the rear seat when the upper portion rotates forward. 4. The vehicle seat structure according to claim 1, wherein the front seat has a seat slide mechanism that slides in a front-rear direction. 5. The vehicle seat structure according to claim 2, further comprising an adjusting means for adjusting a height of the rear seat on the front end side of the seat cushion.