JPS61109508A - Side support controller of car seat - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a side support adjustment device for an automobile seat, which allows adjustment of the amount of protrusion of side support portions on both sides of a seat body.

(Prior Art) An automobile seat is constructed as shown in, for example, Japanese Utility Model Application Publication No. 55-49623.

That is, in this configuration, side support portions are provided on both sides of the seat body, and the side support portions protrude from the seating side surface of the seat body so that the person seated on the seat body can be held from both sides thereof. . Further, each of the side support portions is rotatably supported around an axis extending in the front-rear direction of the seat.

(Problems to be Solved by the Invention) Incidentally, in order for the seated person to select the sitting comfort, it is desirable to be able to adjust the amount of protrusion of the side support portions. On the other hand, when a car is running, a sudden lateral shake may occur in the car body. In order to protect the seated person from this large impact, it is desirable that the side support portions protrude significantly to more reliably hold the seated person.

However, with the above-mentioned conventional configuration, when trying to adjust the amount of protrusion of the side support portion or to make it protrude largely, the following first-order problems arise.

That is, in the conventional configuration described above, since the pair of side support portions are configured to be pivoted around an axis extending in the front-rear direction of the seat, it is difficult to adjust the protrusion amount of the side support portions, or to adjust the negative protrusion amount. If the side support portions are rotated in an attempt to increase the size, the dimensions between both side support portions will change. However, since the width dimension of the seated person is fixed, the rotation of this side support portion may not be able to adequately hold the seated person, or may conversely put more pressure on the seated person than necessary. . Therefore, it is difficult to ensure a sufficient amount of protrusion of the side support portions.

(Purpose of the Invention) This invention was made with attention to the above-mentioned circumstances, and it is important to note that when a seated person attempts to select a seating comfort, or when a car is running, a sudden lateral shake occurs in the car body. To adjust the amount of protrusion without being limited by the width dimension of the seated person and to make the amount of protrusion large when a large impact is applied to the seated person.

(Structure of the Invention) A feature of the present invention for achieving the above object is that the side support portions on both sides of the seat body can protrude from and retreat from the seating side surface of the seat body.
This side support portion is rotatably supported around an axis extending in the width direction of the seat.

(Example) Embodiments of the present invention will be described below with reference to the drawings.

(First example) 1 to 3 show a first embodiment.

S is an automobile seat, and this seat S has a seat body 1. Further, the seat body 1 is composed of a seat cushion 2 supported on the floor of the vehicle body, and a seat back 3 pivotally supported at the rear end of the seat cushion 2 so as to be rotatable back and forth.

Further, each of the seat cushion 2 and the seat back 3 includes a seat frame 4 and a seat pad 5 that covers the seat frame 4.

A pair of side support parts 6, 6 are provided on both sides of the seat body 1 so as to be able to hold the seated person A on both sides. Each side support portion 6 is rotatably supported on both sides of the seat body I about an axis extending in the width direction of the seat S. This rotation allows the side support portion 6 to protrude and retreat from the seating side surface of the seat body 1.

The side support portion 6 will be described in more detail below.

The seat frame 4 of the seat back 3 is formed by bending a pipe with a circular cross section into a gate shape. A pair of upper and lower brackets 7, 7' are fixed to both sides of the seat frame 4, respectively. An upper interlocking shaft 8 is installed on the left and right upper brackets 7.7 so as to be rotatable about an axis extending in the width direction of the sea 1S. Further, a lower interlocking shaft 9 is installed on the left and right lower brackets 7', 7' so as to be rotatable about an axis extending in the width direction of the seat S.

An upper arm 10 is protruded from each end of the upper interlocking shaft 8, and a lower arm 11 is protruded from each end of the lower interlocking shaft 9. And these upper and lower arms 10.11
A side frame 12 having a U-shape when viewed from the side is installed at each rotation end. Each end of the side frame 12 is pivoted to a corresponding upper and lower arm 10, 11, respectively. A side support pad 5a is provided to cover a mechanism connecting the upper and lower arms 10.11 and the side frame 12.

A spring 13 is provided for pivoting each arm 10.11 forward so as to cause the side frame 12 to project forward. This spring 13 is provided between the lower bracket 7' and the lower arm 11 pivotally supported by the lower bracket 7'.

In addition, a drive device 1 that rotationally drives the lower interlocking shaft 9 is provided.
4 is provided. This drive device 14 is the seat frame 4
The first electric motor 15 is supported by the first electric motor 15, and the power transmission means 16 rotates the lower interlocking shaft 9 using the power of the first electric motor 15. Although not shown, this power transmission means 16 includes a brake that holds the lower arm 11 in any rotational position, and a brake that enables power transmission when the lower arm 11 moves rearward. Equipped with directional clutch etc.

When adjusting the amount of protrusion of the side support portion 6 configured as described above, first, the spring 13
The side frame 12 is made to protrude forward (indicated by solid lines in each figure).

Next, the first electric motor 15 is driven to rotate each arm 10, 11 backward against the elastic force of the spring 13, thereby rotating the side frame 12 to an arbitrary position. As a result, the amount of protrusion of each side support part 6 can be adjusted while keeping the width dimension between the pair of side frames 12 and 12 constant (as shown by the two-dot chain line in FIG. 2). 15, the lower interlocking shaft 9 is rotated by the brake installed in the drive device 14, and the side support portion 6 is moved to a desired position around the axis extending in the width direction of the seat S. Retained.

On the other hand, the side support portion 6 further has the following configuration. That is, when the upper arm 10 rotates backward as described above (as shown by the dashed line in FIGS. 1 and 2),
A latching device 17 is provided to hold it in position.

The above-mentioned latching device 17 includes a hook 10a protruding from the rotating end of the upper arm 10, a latching tool 18 provided on the seat frame 4 side for latching this hook loa, and a latching tool 18 from the hook 10a.

Then, the second electric motor 19 is operated, and the hook t
When the latching state between Oa and the latching tool 18 is released, the spring 13
As a result, the upper and lower arms 1O911 are rotated forward, and the side frame 12 is projected (indicated by solid lines in each figure). It is possible to protrude rapidly and significantly.

In the above case, the lower interlocking shaft 9 is used as the drive shaft, but the upper interlocking shaft 8 may also be used as the drive shaft.
7 is configured with a second electric motor 19, etc., but this second electric motor J
For example, a solenoid may be used instead of a19.

(Second Embodiment) FIG. 4 shows a second embodiment, and a different configuration from the first embodiment will be explained.

A manual/X handle 20 is attached to one end of the lower interlocking shaft 9. Although not shown, this manual handle 20
A locking means is provided to fix the rotation angle at a desired rotation angle.

By rotating the manual nozzle 20 and holding the desired rotation angle with the locking means, the lower arm 11 can be fixed at a desired angle. The side support portion 6 is maintained at a desired amount of protrusion.

(Effects of the Invention) According to the present invention, the side support portion of the automobile seat is arranged around an axis extending in the width direction of the seat relative to the seat body so that the side support portion of the automobile seat can protrude and retreat from the seating side surface of the seat body. Since the side support portions are rotatably supported, when adjusting the amount of protrusion of the side support portions, the side support portions can be made to protrude while keeping the dimensions between the left and right side support portions constant. Therefore, when adjusting the amount of protrusion, it is possible to avoid the inconvenience of not being able to sufficiently hold the seated person or, conversely, of pressing the seated person more than necessary.

Therefore, the seated person can select a desired sitting comfort by adjusting the amount of protrusion in a sufficiently large adjustment range. In addition, when the vehicle body shakes suddenly and a large impact is applied to the occupants when the vehicle is running, it is possible to protect the occupants more reliably by increasing the amount of protrusion of the side support portions. can.

[Brief explanation of the drawing]

The figures show an embodiment of the invention, and FIGS. 1 to 3 show the first embodiment, and FIG. 1 is a perspective view of an automobile seat, and FIG.
FIG. 3 is a simplified partial plan view of the same seat, and FIG. 4 is a perspective view of a second embodiment of the automobile seat. L... Seat body, 6. Party side support part, A-curvature φ seated person, S @ seat. Figure 2 Figure 3

Claims (1)

[Claims] 1. In an automobile seat in which side support portions are provided on both sides of the seat body so as to be able to hold a seated person on the seat body from both sides thereof, the side support portions protrude and retreat from the seating side surface of the seat body. A side support adjustment device for an automobile seat, characterized in that the side support portion is rotatably supported on the seat body around an axis extending in the width direction of the seat.