JP2596569Y2 - Vehicle seat - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle seat for a vehicle such as an automobile.

[0002]

2. Description of the Related Art In a vehicle seat in which a pad receiving body for supporting a seat pad is resiliently supported on a seat frame via a spring body, a local seat pad is used as a spring body instead of a conventional S-shaped spring. There have been many proposals using a torsion bar which does not cause a drop and has sufficient elasticity even when a seat pad is thinned, in Japanese Utility Model Laid-Open No. 2-57442 and Japanese Utility Model Laid-Open No. 3-78443. .

However, in such a conventional vehicle seat, the torsion bar is fixed to the seat frame as shown in FIG.
5b is locked with a stopper 20 such as a clip.
Since 0 is fixed by means such as screws 21 or welding, the number of parts and work procedures are increased, so that there is a problem that assembling workability is deteriorated and cost is increased. Also,
When a load is applied during seating, there is a problem that abnormal noise is generated due to rubbing or the like at a fixed portion of the torsion bar, and there is also a problem that attenuation characteristics of the torsion bar are not sufficient and riding comfort is deteriorated.

[0004]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned conventional problems, and does not require any special fasteners or other parts to fix the torsion bar to the bracket, and also does not require a fixing operation. It is extremely easy to greatly improve the workability of assembly, and furthermore, it can accurately prevent the generation of unusual noise, and can impart sufficient damping characteristics to the torsion bar, thereby ensuring excellent ride comfort. It has been completed for the purpose of providing a vehicle seat.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a vehicle seat according to the present invention has a pad receiving body for supporting a seat pad resiliently supported by a seat frame with a torsion bar interposed therebetween. In the vehicle seat, a concave groove into which the mounting base of the torsion bar is fitted and a cut-and-raised claw arranged at the edge of the groove are provided on the seat frame side, and the mounting base of the torsion bar fitted into the concave groove is turned over. It is characterized by being locked and fixed by the cut and raised claw. Preferably, the fixing portion of the torsion bar is covered with a coating film made of an elastic material.

[0006]

In the vehicle seat constructed as described above, since the pad receiver supporting the seat pad is resiliently supported on the seat frame via the torsion bar, the S-shaped spring is formed by the elasticity of the torsion bar. The point that the seat pad does not fall down as compared with the spring body and exhibits more excellent cushioning properties as the seat is similar to the conventional vehicle seat of this kind, but the torsion bar is fixed to the seat frame side. Since the mounting base of the torsion bar is simply inserted into the concave groove provided on the seat frame side and the cut-and-raised claw disposed on the edge of the groove is turned down, it is easy to carry out.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail with reference to the illustrated automobile seat cushion as an embodiment. In the drawing, reference numeral 1 denotes a pad receiver of the seat pad 2, 3 denotes a metal seat frame molded as a one-piece frame, 4 denotes a bracket fixed to the seat frame 3 by welding or the like, 5 denotes a pad receiver 1 and a bracket 4 And a torsion bar interposed between them. The torsion bar 5 is fixed by fitting its mounting base 5b into a semicircular concave groove 7 provided on the bracket 4 and then turning down the cut-and-raised claw 8 disposed on the groove edge of the concave groove 7. On the other hand, the tip of the torsion bar 5 is formed on a hook portion 5a, and the hook portion 5a is provided on a side plate portion of the pad receiver 1 in a lateral direction so as to correspond to a rotation locus. The torsion bar 5 is interposed between the pad receiver 1 and the bracket 4 so as to elastically support the pad receiver 1 with respect to the seat frame 3. .

In the figure, reference numeral 6 denotes a hook which is attached to the engaging portion between the hook 5a at the tip of the torsion bar 5 and the long hole 1a for locking the torsion bar of the seat frame 3 to smoothly slide the hook 5a. A protection member 9 made of metal or abrasion resistant synthetic resin for effectively preventing abrasion and damage is used to lock the hook portion 5c of the torsion bar so that the mounting base portion 5b of the torsion bar does not rotate when seated. It is a notch. Also, the mounting base 5b of the torsion bar is provided.
4 can be covered with a coating film 10 made of an elastic material such as synthetic rubber as shown in FIG. 4. In this case, a load is applied at the time of sitting by the presence of the coating film 10. In this case, the generation of abnormal noise due to rubbing or the like at the fixed portion of the torsion bar is properly prevented, and the torsion bar is provided with sufficient damping characteristics to ensure excellent riding comfort. In the above embodiment, only the seat cushion is described, but it goes without saying that the present invention can be similarly applied to a seat back.

In the vehicle constructed as described above, the seat pad 2 is attached to the pad receiver 1 in the same manner as the conventional vehicle seat, and the pad receiver 1 is attached to the seat frame 3 via the torsion bar 5. The torsion bar 5 is mounted to exhibit cushioning properties as a seat due to the elasticity of the torsion bar 5, but the torsion bar 5 is fixed to the seat frame side by a concave groove provided in the bracket 4 on the seat frame. 7, the fitting base 5b of the torsion bar 5 is fitted, and the cut-and-raised claw 8 arranged on the edge of the groove is turned down.
The assembly work of both can be performed very easily. Further, when the mounting base 5b of the torsion bar is covered with the coating film 10 made of an elastic material, the friction at the fixed portion of the torsion bar when a load is applied during seating due to the interposition of the coating film 10. As a result, the generation of abnormal noise can be prevented accurately, and furthermore, the torsion bar can be given sufficient damping characteristics to ensure excellent riding comfort.

[0010]

As is apparent from the above description, the present invention inserts the mounting base of the torsion bar into the concave groove provided on the seat frame side and turns the cut-and-raised claw disposed on the edge of the groove. The torsion bar mounting base is fixed to the seat frame, so no special fasteners or other parts are required to fix the torsion bar to the seat frame, and the fixing work is extremely easy and the assembly workability is greatly improved. Can be done. In addition, when the mounting base of the torsion bar is covered with a coating film made of an elastic material, a difference due to rubbing or the like at a fixed portion of the torsion bar when a load is applied during seating due to the presence of the coating film. The generation of sound is accurately prevented, and furthermore, a sufficient damping characteristic is imparted to the torsion bar, so that excellent riding comfort can be secured. In addition, since the structure is simple and the mounting work can be performed very easily, there is an advantage that the product is inexpensive in cost and can be efficiently provided with excellent quality. Therefore, the present invention has an extremely large practical value as a vehicle seat that has eliminated the conventional problems.

[Brief description of the drawings]

FIG. 1 is an overall front view showing an embodiment of the present invention.

FIG. 2 is a perspective view of a main part showing an embodiment of the present invention.

FIG. 3 is a sectional view of a main part showing an embodiment of the present invention.

FIG. 4 is a sectional view of a main part showing another embodiment.

FIG. 5 is a sectional view of a main part showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Pad receiver 2 Seat pad 5 Torsion bar 5b Mounting base 7 Concave groove 8 Cut-and-raised claw 10 Coating film

──────────────────────────────────────────────────続 き Continued on the front page (56) References Japanese Utility Model 7-23452 (JP, U) Japanese Utility Model 5-70342 (JP, U) Japanese Utility Model 3-79743 (JP, U) Japanese Utility Model 2 57442 (JP, U) Hira 3-78443 (JP, U) (58) Fields surveyed (Int. Cl. ⁶ , DB name) A47C 7/02

Claims (3)

(57) [Scope of request for utility model registration] 1. A vehicle seat wherein a pad receiver (1) for supporting a seat pad (2) is resiliently supported on a seat frame with a torsion bar (5) interposed therebetween. The concave groove (7) into which the mounting base (5b) of (5) is fitted, and the cut-and-raised claw arranged on the groove edge
(8) and a torsion bar fitted in the concave groove (7).
(5) A vehicle seat characterized in that the mounting base (5b) of (5) is locked and fixed by a cut-and-raised claw (8). 2. The vehicle seat according to claim 1, wherein the groove (7) and the cut-and-raised claw (8) are provided on a bracket (4) mounted on the seat frame. 3. The vehicle seat according to claim 1, wherein the mounting base (5b) of the torsion bar (5) is covered with a coating film (10) made of an elastic material.