JPH0114502Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a support mechanism such as a side support for a vehicle seat such as a passenger car.

In vehicle seats such as passenger cars, side parts,
A support mechanism is provided inside the seat pad to improve seating comfort by adjusting the degree of support for the thigh portion, lumbar portion, etc. However, with these conventional support mechanisms, when a movable part such as a support plate is operated to adjust the support level, the surface of the seat is also operated at the same time, which can cause wrinkles in the upholstery and spoil the appearance. It's also not very comfortable to sit on. FIG. 1 is a schematic diagram illustrating the operation of the seat side support mechanism. When the support plate a, which is a movable part provided inside the seat side, moves in the direction of the arrow as shown by the chain line by the required mechanism, the seat The side skin material b also moves at the same time as shown by the chain line, and as a result, the skin material b becomes wrinkled.

FIG. 2 is a perspective view showing an example of such a conventional side support mechanism, and FIG. 3 is a longitudinal sectional view thereof. In FIG. 2, the seat body made of a skin material, pad material, etc. is excluded. An overview of the structure and operation of this support mechanism is as follows. The base end edge of the support plate a is pivotally supported by a support shaft d supported by a bracket c fixed to the seat frame l by welding or the like. Further, the central portion of the base end of the support plate a is integrally fixed to the swinging piece e by welding or the like. The support shaft d passes through the upper part of the swinging piece e. A long hole f in the vertical direction is provided in the lower part of the swinging piece e, and a pin h of a nut member g fitted into the swinging piece e is fitted into the long hole f. A screw i is screwed into the center of the nut member g in a direction perpendicular to the pin h, and the screw i is supported by a bracket j fixed to the seat frame l by welding or the like, and a knob k is fixed to one end of the bracket j. has been done. Knob k is exposed outside the seat so that it can be manually operated. When the knob k is manually rotated, the nut member g screwed onto the screw i moves horizontally in the direction of the arrow shown in the figure, and as a result, the swinging piece e is pulled by the pin h and swings around the support shaft d. move. Accordingly, the support plate a, which is integrally fixed to the swinging piece e, swings in the direction of the arrow.

The surface of the sheet is covered with a trim cover o in which a skin material b, wadding m, and a backing fabric n are laminated, and the inner surface of the trim cover o is filled with pads p.
When the support mechanism is activated, the support plate a is swung outward (to the left in Figure 3) in order to strengthen the support state, and it comes into contact with the pad p and presses it, so that the trim cover o is It is moved outward (toward the center of the seat), and as a result, the skin material b (particularly near the boundary with the seat main portion) is wrinkled.

The present invention solves the problems of conventional seat support mechanisms as described above, and is intended to provide a support mechanism that allows the support state to be adjusted without damaging the appearance of the seat and provides a comfortable sitting experience. It has been done. In other words, the vehicle seat support mechanism of the present invention uses the first support plate as the support plate.
Two support plates are provided, a support plate and a second support plate. The base end portions of these two support plates are swingably supported on the same axis, and their respective tip portions are opposed to each other with an elastic body such as a coil spring interposed therebetween. The first support plate has its outer surface (the surface opposite to the opposite side of the second support plate) opposed to the back surface of the seat pad, and has a stopper means to prevent it from swinging outward from a predetermined position. provided. Further, the second support plate is configured to be able to swing about the axis as in the conventional example by operating a knob. DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the structure of the present invention will be explained below with reference to the embodiments shown in the drawings.

FIG. 4 is a schematic diagram illustrating the operation of the side support mechanism to which the present invention is applied, in which 1 is a first support plate, 2 is a second support plate, and 3 is a support that pivotally supports the base ends of both support plates. The shaft 4 is a coil spring interposed between the tips of both support plates. Second
The support plate 2 is swung in the direction of the arrow by a mechanism described later to adjust the supporting force of the first support plate 1. Since the first support plate 1 is regulated by a stopper means, which will be described later, from swinging outward (to the left) more than a predetermined amount, the skin material b will not be moved and wrinkled.

FIG. 5 is a perspective view showing one embodiment of a side support mechanism to which the present invention is applied (the seat body is not shown), and FIG. 6 is a longitudinal sectional view thereof. As seen in the figure, the first support plate 1 and the second support plate 2 are pivotally supported at their respective proximal edges on a support shaft 3. Further, the tip ends of both support plates face each other with a coil spring 4 interposed therebetween. Both ends of the support shaft 3 are supported by a bracket 5 fixed to the seat frame 20 by welding or the like, and a substantially central portion thereof passes through the upper part of the swing piece 6. The swinging piece 6 is connected to the second support plate 2
It is integrated by welding or the like at the approximate center of the proximal end. A vertical elongated hole 7 is provided in the lower part of the swinging piece 6, and a pin 9 protruding from a nut member 8 fitted inside the swinging piece 6 is fitted into this elongated hole. A screw rod 11 is screwed into the center of the nut shield 8 in a direction perpendicular to the pin 9, and the screw rod 11 is attached to a bracket 1 fixed to the seat frame 20 by welding or the like.
0, and a knob 12 is fixed to one end thereof.

The first support plate 1 has its outer surface (the surface opposite to the side facing the second support plate 2) opposingly abutting the back surface of the seat pad p, and is fitted onto the support shaft 3 at its base end. The matching portion extends to both sides and forms a stopper 13. This stopper 1
3 comes into contact with the edge of the bracket 5 and restricts the support plate 1 from swinging any further toward the pad p. When the screw rod 11 is rotated by manually operating the knob 12, the nut member 8 screwed thereon moves horizontally in the direction of the arrow in FIG. The second rocker pivots around the support shaft 3, and is therefore integrally fixed to the rocker piece 6.
The support plate 2 also swings about the support shaft 3 in the direction of the arrow in FIG. When the second support plate 2 swings toward the first support plate 1, the coil spring 4 is compressed, and the supporting force of the first support plate 1 is strengthened. If the second support plate 2 swings in the opposite direction, the supporting force is weakened, but this swing of the second support plate 2 in the opposite direction is regulated by the nut member 8 coming into contact with the inner surface of the bracket 10. and the second
The support plate 2 will no longer swing away from the first support plate 1.

When a load is applied to the seat skin material b from the outside, the first
The support plate 1 receives this load via the pad p and compresses the coil spring 4 to swing and provide support. In this way, the load of the occupant's body pressing against the seat covering material is supported via the coil spring 4, which increases the cushioning properties of the support.
Provides even more comfortable sitting comfort. It goes without saying that the coil spring 4 may be replaced with a spring of another shape or with rubber or other cushioning elastic body. Further, the stopper means for the first support plate explained in the above embodiment may be any means other than the above, and the mechanism for swinging the second support plate may be any other known mechanism. can do. moreover,
Although the above description has been made regarding the side support mechanism of a vehicle seat, the technical idea of the present invention is not limited thereto, and can be similarly applied to other support mechanisms such as side support and lumbar support.

As is clear from the above explanation, the support mechanism of the present invention allows the support force to be adjusted arbitrarily by manual operation of the knob, and since it uses an elastic body such as a coil spring, the cushioning properties of the support are increased and extremely Provides a comfortable sitting experience. In addition, the sheet appearance is not deformed and the skin material is free from wrinkles, which is extremely desirable in terms of appearance. As described above, the present invention has great practical effects.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram for explaining the operation of a conventional side support mechanism for a vehicle seat, FIG. 2 is a perspective view showing an example of a conventional side support mechanism for a vehicle seat, FIG. 3 is a longitudinal sectional view thereof, and FIG. The figure is a schematic diagram for explaining the operation of the side support mechanism for a vehicle seat to which the present invention is applied, FIG. 5 is a perspective view showing one embodiment of the side support mechanism for a vehicle seat according to the present invention, and FIG. 6 is a longitudinal sectional view thereof. It is. DESCRIPTION OF SYMBOLS 1... First support plate, 2... Second support plate, 3... Support shaft, 4... Coil spring, 5
... Bracket, 6 ... Rocking piece, 7 ... Long hole, 8
... Nut member, 9 ... Pin, 10 ... Bracket, 11 ... Spiral rod, 12 ... Knob, 13 ... Stopper, 20 ... Seat frame.

Claims (1)

[Scope of utility model registration request] The base end portions of the first and second support plates are pivotably supported on the same axis, and the tip portions are opposed to each other via an elastic body such as a coil spring, and the first support plate is provided with a stopper means for bringing its outer surface into contact with the back surface of the seat pad and preventing it from swinging outward from a predetermined position, and furthermore, the second support plate is configured to swing about the axis by operating a knob. A vehicle seat support mechanism characterized by: