JPH0347559Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a vehicle seat, and in particular, a vehicle seat that can provide a sense of hold to the occupant and eliminate the inconvenience when getting on and off the seat. Regarding the improvement of

(Prior Art) In general, this type of vehicle seat is designed to stably hold a seated occupant while the vehicle is running, provide appropriate sitting comfort, and maintain the seated position for long periods of time. It is desired to be able to reduce the labor burden as much as possible, and various structures have been known in the past. For example, in this kind of conventional vehicle seat 1, in order to provide the above-mentioned holding feeling, both sides of the seat cushion 2 are formed as side support parts 3, 3, which are wider than the seat body part 2a, as shown in FIG. Generally, a configuration is adopted in which the seat is formed so as to protrude upward from the seat so that when the seated person is seated, the seat is hugged from both sides, and this is a substantially similar structure on the seat back 4 side. There is. Here, reference numerals 5 and 5 in the figure designate side support portions formed in the seat bag 4 so as to protrude further forward of the seat than the seat body portion 4a.

(Problems to be solved by the invention) By the way, according to the conventional structure as described above,
The side support parts 3, 3; 5, 5 formed on the seat cushion 2 and the seat back 4 are important for providing a sense of hold for the seated person, but on the other hand, when the seated person gets on and off the seat, they are important. In particular, the side support part on the door side of the car body is too high and gets in the way, making it inconvenient to get on and off the car.Furthermore, the cover of the side support part wears and tears when getting on and off the car. It was hot. Therefore, in such a vehicle seat, in order to satisfy the conflicting demands of a feeling of holding and ease of getting on and off, the amount of protrusion of the side support portion cannot be increased too much. This poses a problem when trying to optimize the hold feeling, and it is desired that some kind of countermeasure be taken.

The present invention was developed in view of these circumstances, and has a simple structure that can provide an appropriate sense of hold to the seated person and eliminate the inconvenience caused by the seated person when getting on and off the seat. The purpose of this invention is to obtain an inexpensive vehicle seat.

(Means for Solving the Problems) In order to meet such demands, the vehicle seat according to the present invention has a side support portion between the seat cushion and the seat back located on the door side of the vehicle body. These side support parts are rotatably supported on the frame of the seat bag, and each of these side support parts is normally biased by an independent biasing means so as to protrude above or in front of the seat relative to the corresponding seat main body. A lock lever is rotatably supported on the side support frame side of the side support part, locking grooves are formed in each of the seat cushion frame and the seat back frame, and the lock lever is engaged in the locking groove to lock each side support. A plurality of locking grooves in at least one of the seat cushion frame or the seat back frame are arranged in parallel vertically or front and rear, and the locking grooves on the upper or front side are locked at least in protruding positions relative to the corresponding seat body. The lock lever is engaged in the groove to lock the side support portion in the protruding position, and the lock lever is engaged in the lower or rear locking groove to lock the side support portion in a position where it does not protrude from the seat body. , the lock levers are connected to each other by a wire, and when one of the lock levers is operated to release the lock with each side support part being locked in a protruding position, the other lock lever is interlocked and released from the locked state. At the same time, while one of the side support parts is locked in a position where it does not protrude, the other side support part is pulled toward the one side support part via the wire against the urging force of the urging means. The seat is held in a position that does not protrude from the seat body.

(Function) According to the present invention, the side support portions of the seat cushion and seat back are normally projected upward or forward of the seat to provide a feeling of holding to the seated person, and the amount of protrusion of both side support portions when the seated person is getting on or off the seat is provided. can be made smaller.

(Example) Hereinafter, the present invention will be described in detail using an example shown in the drawings.

Figures 1 to 3 show an embodiment of the vehicle seat according to the present invention, and show only the frame structure of the side support portion on the side of the vehicle door, which is the main part, in an enlarged manner, and show the other structure. etc. are omitted.

Now, according to the present invention, the side support parts 3 and 5 of the seat cushion 2 and the seat back 4 located on the door (not shown) side of the vehicle body in the vehicle seat 1 as described above are connected to the seat cushion 2.
and the frames 10, 11 of the seat back 4, and each of these side support parts 3, 5 is supported by a spring 1, which is an independent biasing means.
6 and 17, the corresponding seat body part 2 is always
The respective side support portions 3, 4a are biased to protrude above or forward of the seat 1 than the
Lock levers 20 and 24 are rotatably supported on the side support frames 12 and 13 of the seat cushion frame 10 and the seat back frame 11, respectively, and locking grooves 22a and 23 are formed in the seat cushion frame 10 and the seat back frame 11, respectively. The lock levers 20, 24 are engaged with the seat body parts 2a, 4a to which the respective side support parts 3, 5 correspond.
A plurality of locking grooves 22a and 22b of at least one of the seat cushion frame 10 and the seat back frame 11 (seat cushion in this embodiment) are arranged vertically in parallel. The lock lever 20 is engaged in the locking groove 22a on the lower side, and the side support part 3 is locked in the protruding position, and the lock lever 20 is engaged in the lower locking groove 22b, so that the side support part 3
is locked in a position that does not protrude from the seat main body 2a, and the lock levers 20 and 24 are connected to each other by the wire 3.
0, each side support part 3,5
When one of the lock levers 220, 24 is operated to release the lock while the lock levers 220, 24 are locked in the extended position, the other lock lever 20, 24 is interlocked to release the locked state, and the seat cushion 2 side While the side support portion 3 is locked in a position where it does not protrude, the side support portion 5 on the seat back 4 side resists the biasing force of the spring 17.
It is characterized in that it is pulled to the side support part 3 side on the seat cushion 2 side via the wire 30 and held in a position that does not protrude from the seat body part 4a.

In this embodiment, the front end of the side support frame 12 on the side of the seat cushion 2 and the upper end of the side support frame 12 on the side of the seat back 4 serve as rotation axes.

Further, the lock lever 20 is inserted into one of the locking grooves 22a and 22b formed at two positions upward and downward on the seat cushion frame 10 side through an opening 21 formed in the frame 12. By being engaged, the side support portion 3 is configured to be locked in two positions, a protruding position and a retracting position, as necessary.

On the other hand, a locking groove 23 is similarly formed on the side of the seatback frame 11, and a lock lever 24 rotatably supported by the side support frame 13 is attached to the opening 25 of the frame 13 with respect to the locking groove 23.
The structure is such that the side support portion 5 can be locked in the protruding position by engaging through the side support portion 5. A plurality of locking grooves 23 are formed in the front and back on the seat back 4 side, and when the lock lever 24 is engaged in the front locking groove, the side support portion 5 protrudes, and the lock lever 24 is engaged in the rear locking groove. It is also possible to configure the side support portion 5 to be locked in a state in which it does not protrude when the side support portion 5 is moved.

As shown in FIGS. 1 and 3, one end of a flexible wire 30 is connected to the lock lever 24 on the side of the seat back 4, and the other end of the wire 30 is fixed to the side support frame 12. is connected to a guide pin 32, and this guide pin 32 is inserted into an arcuate groove 31 bored in the seat cushion frame 10, whereby both side support parts 3, 5
(12, 13) are configured to operate in conjunction with each other.

Therefore, according to the above-described configuration, the side support portions 3 and 5 of the seat cushion 2 and the seat back 4 can normally be projected upward or forward of the seat by a predetermined amount to provide a holding feeling to the seated person. In addition, when a seated person gets on or off, the protrusion amount of both side support parts 3, 5 can be reduced by releasing the lock lever 20 (lock lever 24 interlocked with this) to push the side support parts 3, 5 toward the seat side. It can be lowered and made smaller. That is, when the lock lever 20 is rotated counterclockwise as indicated by the arrow a in FIG. By pulling the lock lever 24 supported by the frame 13 via the wire 30, the side support frame 13 is maintained in a state where it is pulled backward (in a direction in which it does not protrude) against the biasing force of the spring 17. When the lock lever 20 is engaged with the locking groove 22b, the side support portions 3 and 5 of the seat cushion 2 and the seat back 3 are held in a state in which they do not protrude, that is, in a retracted position.

Next, operate the lock lever 20 to lock the locking groove 22.
When the engagement state with the lock lever 2 is released, the side support parts 3 and 5 return to their protruding positions due to the biasing forces of the springs 16 and 17, and the lock lever 2
0 and 24, it is locked at the protruding position.

Therefore, according to such a configuration, it is possible to eliminate the conventional problem in which the protrusion of the side support parts 3 and 5 becomes an obstacle when a seated person gets on and off, causing inconvenience. The benefits are great.

Note that the present invention is not limited to the structure of the embodiment described above, and the shape and structure of each part may be modified and changed as necessary. For example, the movable structure of the side support parts 3 and 5 in the seat cushion 2 and seat back 4 described above may be a parallel movement structure using a link mechanism, and various means can be considered as connection means and locking means. It is something that can be done.

(Effect of the invention) As explained above, according to the vehicle seat according to the invention, the side support portions of the seat cushion and the seat back are movably supported in conjunction with each other via wires, and the seat cushion frame By engaging the lock levers in the locking grooves drilled in the seatback frame and the seatback frame, the side support part can be locked in the protruding position or in the non-protruding position. This eliminates the problem of inconvenience caused by the protrusion of the side support section getting in the way of passengers getting on and off the vehicle.Moreover, the side support section, which always protrudes by a predetermined amount, provides a sense of hold to the vehicle seat. It has various excellent practical effects, such as being able to hold its weight and function as a sheet.

[Brief explanation of drawings]

The drawings show an embodiment of the vehicle seat according to the present invention, in which Fig. 1 is a side view showing only the main frame structure, Fig. 2 and Fig. 3 are the - line,
- Sectional view, FIG. 4 is a schematic perspective view of the entire sheet. In the figure, 1... Vehicle seat, 2... Seat cushion, 2a... Body part, 3... Side support part, 4... Seat back, 4a... Main body part, 5...
...Side support part, 10... Seat cushion frame, 11... Seat back frame, 1
2,13...Side support frame, 14,1
5... shaft, 16, 17... spring, 20, 24...
Lock lever, 30...Flexible wire.

Claims (1)

[Scope of Claim for Utility Model Registration] The side support portions of the seat cushion and seat back located on the door side of the vehicle body are rotatably supported by the frames of the seat cushion and the seat back, and each of these side support portions is independent from the other. The seat shoe is normally biased by the biasing means so as to project upwardly or forwardly from the corresponding seat main body, and a lock lever is rotatably supported on the side support frame side of each side support part, and the seat shoe is A locking groove is formed in each of the side support frame and the seat back frame, and the lock lever is engaged with the locking groove so that each side support portion is locked at least in a protruding position relative to the corresponding seat body portion, and the seat A plurality of locking grooves in at least one of the cushion frame and the seat back frame are arranged in parallel vertically or front and back, and a locking lever is engaged in the upper or front locking groove to lock the side support part in the protruding position. The lock levers are engaged in the locking grooves on the lower side or the rear side, and the side support parts are locked in a position where they do not protrude from the seat body part, and the lock levers are connected by wires, and each side support part is in a protruding position. When one of the lock levers is operated to release the lock in a locked state, the other lock lever is linked and the locked state is released, and one of the side support parts is locked in a position where it does not protrude. In this state, the other side support part is pulled toward the one side support part through the wire against the biasing force of the biasing means and held in a position where it does not protrude from the seat body. vehicle seat.