JPS5950540B2 - Seat with side support adjustment device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a seat with a side support adjustment device used in a vehicle or the like.

Conventionally, as a seat with a side support adjustment device that variably adjusts the holding position of the backrest side part of the seat, that is, the side support part that holds the side part of the seated person from the side, there is a conventional seat equipped with a side support adjustment device as shown in Fig. 1.2 (US Patent No. 4.130). .318).

In the figure, a is the backrest of the seat, and b and c are side support parts that support the seated person's flanks from the side, which are constructed separately from the backrest main body d and can be rotated independently. .

e is the side support part, and the tension provided at C is a line.

In the seat with the curved configuration, the existence of the side support parts b and c is obvious at a glance, and the seat design as a whole is unique.

For this reason, the seat design is limited to a specific design,
The disadvantage is that the degree of freedom is lost.

Furthermore, when the side support portions S and C were rotated to hold the occupant's flanks, there was no freedom to sway the occupant's body from side to side.

Therefore, there is a device in which a holding portion is formed on the backrest itself, as disclosed in Japanese Utility Model Application Publication No. 54-31504.

In this case, there is no need to provide a unique external design, and it can be widely applied to seats with extremely general external designs.

However, according to this publication, even if the holding part is pushed by the support, it is resisted by the elasticity of the holding part itself, so there is a drawback that the holding force cannot be increased.

In view of the prior art, an object of the present invention is to provide a seat with a side support adjustment device that can increase the degree of lateral freedom of the side support section itself that holds the side of the passenger.

Hereinafter, the structure of the present invention will be explained based on the embodiments shown in FIGS. 3 to 5.

1 is a seat back frame made of pipe material and a flat plate; 2.3 is a wing shaft 4.5 provided in parallel on the inner surface of both left and right sides of the seat back frame 1; A pair of left and right wings, 2a and 3, that rotate in the front-back direction 30.31 with respect to one side of the frame.
6.7 is a pair of left and right rotating levers that project inward from the seatback frame 1. The lever shaft 10 is fixed to a lever shaft 10 which is supported by a bearing 8.9 provided, and one end thereof is connected to the front surface of the arms 2a and 3a through a coiled spring 11.12, respectively, and the arrow 32
．． 33 directions, that is, forward direction 32 and backward direction 33.

Reference numerals 13, 14, and 15 denote a rotation device, in which the multistage cam 13 is integrally attached to a dial drive shaft 14 attached to the seat back frame 1, and when rotated by the dial 15, a rotation device is formed at the other end of the rotation lever 7. The rotary lever 6.7 can be rotated in multiple stages by coming into contact with the cam receiver 16.

Reference numeral 17 indicates a back pad made of urethane foam or the like in which a recess 17a is formed with which the front surface of the wing 2.3 comes into contact; 18 indicates a frame line embedded in the back pad 17;
The drawing line 20 that draws the inside corner 19a of the is the stop.

Although the configuration of the back pad 17, seat skin 19, frame line 18, and drawing line 20 on the wing 2 side is not shown,
It has a left-right symmetrical configuration with the wing 3 side.

In addition, 21 is a side support part of the back pad 17;
2 is a seat according to the present invention, 23.23... is an S-shaped spring suspended on the seat back frame 1, 24 is fixed to the back surface of the back pad 17, and wings 2.3 are attached to the back pad. This is a lining that prevents it from sinking into the inside of 17.

First, turn the dial 15 to remove the integrated multi-stage cam 13.
When the rotary lever 6.7 is rotated, the rotary lever 6.7 repeats a multistage rotary movement in one of the directions of the arrows 32, 33 depending on the number of cam stages.

The rotational relationship between the dial 15 and the rotary lever 6.7 depends on the shape of the multistage cam 13.

Therefore, for example, when the rotary lever 6.7 is operated to rotate in the direction of arrow 32, ie, forward, the arms 2a, 3a are moved forward via the spring 11.12, and the wing 2.3 is moved in the direction of arrow 30, ie, forward. Rotate in the direction.

Conversely, when the rotary lever 6.7 is rotated in the direction of the arrow 33, ie, in the rearward direction, and the arms 2a, 3a are moved rearward, the wing 2.3 is rotated in the direction of the arrow 31, ie, in the rearward direction.

Thus, when the wing 2.3 rotates in the direction of the arrow 30, the side support portion 21 of the back pad 17 is displaced to the position shown by the dashed line, as shown in FIG.

At this time, the wing 2.3 is attached to the recess 1 of the back pad 17.
7a, and since the inner corner 19a of the seat skin 19 is attracted to the frame line 18, the above displacement occurs only in the side support part 21, and is accompanied by local deformation and distortion. Never.

Further, there is no risk of misalignment between the seat skin 19 and the back pad 17.

Also, the wing 2.3 is connected to the back pad 1 by the lining 24.
I'm hooked on 7 and never get bored.

As described above, the present invention provides a pair of left and right wings on the inner surfaces of both left and right sides of a seat back frame, rotates the wings in multiple stages using a multi-stage cam, and displaces the side support parts on both left and right sides of the back pad that cover the wings in multiple stages. Since the side part of the seat occupant is held laterally, even if a large force or impact force is applied to the side port portion, the spring absorbs and buffers the force.

Therefore, the back pad and the body come into elastic contact, making the seat extremely comfortable.

[Brief explanation of the drawing]

1 and 2 are perspective explanatory views of a conventional seat, FIG. 3 is a perspective explanatory view of the seat of the present invention, FIG. 4 is a perspective explanatory view of essential parts of the seat of the present invention, and FIG. FIG. 4 is an explanatory cross-sectional view taken along line V-v in FIG. 3; 1... Seat back frame, 2.3...
...Wing, 6.7...Rotary lever, 10.
... Lever shaft, 11.12 ... Spring, 1
3.14.15...Rotating device, 17...
・Back pad, 21...Side support part.

Claims (1)

[Claims] 1 A pair of left and right wings are pivotally supported on the front of the seat back frame so that they can rotate freely in the front and back direction, a rotating lever that transmits the operating force of the rotating device via a spring to allow the wings to rotate freely, and side support adjustment. configure the device,
A seat with a side support adjustment device, characterized in that the device is incorporated into a seat back, and a frame line, which is a draw line that draws the large corner of the seat skin, is covered with a back pad embedded therein.