JPH0349556Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a retaining structure for seat springs in automobiles, etc.

(Prior art and its problems) As shown in FIG. 5, in order to hold the end of an S-shaped spring 20 (hereinafter referred to as S spring) that supports the cushion pad of the seat bag in a conventional automobile seat by the seat frame 21. , a locking hole 22 is provided in a bracket 22 provided on the seat frame 21.
a and a notch 2 that communicates the locking hole 22a with the outside.
2b, and a leg portion 23a that holds the end of the S spring 20, a link portion 23b, and a locking hole 2.
Attach a holder 23 consisting of a stand part 23c with a smaller diameter than 2a and a collar part 23d with a larger diameter than the locking hole 22a, and fit the stand part 23c into the locking hole 22a by passing the notch 22b through the link part 23b. A device that does this is known (see Utility Model Publication No. 1807, 1983).

However, in the above-mentioned holding structure, the holding tool 23
There is a relatively large play (vibration) between the and bracket 22.
This play may cause the holder 23 to come off from the locking hole 22a, and especially if the holder is made of metal, a large noise may be generated between the support part and the locking member due to vibration. There was a problem that occurred.

Furthermore, since the holder 23 must be inserted into the bracket 22 with its link portion 23b aligned with the notch 22b, the work of assembling the S spring 20 becomes somewhat complicated.

(Means for solving the problems) The present invention aims to solve the above-mentioned problems. In order to achieve this purpose, the seat spring holding structure according to the present invention accommodates the U-shaped end of the seat spring, and has a retaining protrusion at the upper end inside the U-shaped end.
and a support comprising a resin cylindrical locking member having an engaging portion on the outside thereof, and an engaged portion provided on the seat frame into which the locking member is inserted and the engaging portion is engaged. The width of the locking member is set to be approximately equal to the distance between the opposing side walls of the support, and the height of the locking member is set to be approximately equal to the distance between the side walls of the support. and a flange bent from one of the side walls approximately parallel to the bottom; the end is inserted into the locking member, and the convex portion prevents it from coming out. After that, the seat spring is held by the support portion through the locking member by tightly fitting the locking member into the support portion and engaging the engaging portion with the engaged portion. shall be.

(Effects of the invention) According to the invention, the locking member attached to the U-shaped end of the seat spring is tightly fitted into the support part, so play between the locking member and the support part is extremely small. Since the engaging part of the locking member engages with the engaged part of the support part and the locking member is prevented from coming out, the locking member, that is, the end of the seat spring. It is possible to provide a holding structure in which there is less risk of the device coming off from the support portion. Furthermore, since the locking member is made of resin, it is possible to avoid metal-to-metal contact between the support portion and the locking member, and as mentioned above, there is only slight play between the locking member and the support portion. Therefore, the noise generated between the locking part and the support part becomes slight.

(Example) An automobile seat employing the seat spring holding structure according to the present invention will be described below.

As shown in FIG. 4, the automobile seat in this embodiment consists of a seat bottom 1, a seat back 2, and a headrest 3 connected to the upper part of the seat back 2. The seat bottom 1 is attached to a resin seat bottom frame 4 at the front and rear of the vehicle body, respectively. A cushion pad 6 is elastically supported by a plurality of S springs 5 (seat springs) stretched in the direction, and the cushion pad 6 is covered with a skin 7. On the other hand, the seat back 2 supports a cushion pad 11 by means of a plurality of S springs 10 which are stretched in the vehicle width direction at regular intervals in the vertical direction on a seat back frame 8 made of a metal pipe. consists of a coating,
The seat back frame 8 is swingably connected to the seat bottom frame 4 by a hinge shaft 14 via a bracket 13 attached to its lower part.

Next, the S spring 10 by the seat back frame 8
The holding structure of is explained. Each S spring 1 is shown in Figures 1 to 3.
0, a plurality of support brackets 15 (support portions) are arranged at predetermined intervals in the vertical direction on each side frame portion of the seat back frame 8 to hold the seat back frame 8. The curved portion 15a having an arcuate cross section is fixed by means such as welding. Each of the above support brackets 1
Reference numeral 5 denotes a pair of left and right side wall portions 15b, 15c facing each other in addition to the curved portion 15a, and both side wall portions 15b, 15.
a flat bottom part 15d that is substantially orthogonal to c and connects both side wall parts, and a flange part 15e that is bent outward from the seat from the upper end of the side wall part 15c near the center of the seat substantially parallel to the bottom part 15d; Holes 16a and 16b (engaged portions) are formed at opposing positions in both side wall portions 15b and 15c, respectively.

On the other hand, one end 17a of the U-shaped end 10a of the S spring 10 is fitted into a resin cylindrical locking member 17, which is closed. The end portion 10a has a pair of convex portions 1 provided in the locking member 17 at the bottom of the locking member.
7b and 17c, and thereby the end 1
Missing of 0a is prevented. The height of the convex portion 17b on the side closer to the open end 17d of the locking member 17 relative to the bottom is gradually increased from the open end 17d toward the closed end 17a, making it easy to insert the S spring end 10a into the locking member 17. It has been made possible to do so. Note that the protrusion 17c is omitted, and the S spring end 10a is replaced by the protrusion 17b.
and the closed end 17a.

The width dimension of the locking member 17 is the same as that of the support bracket 1.
The height dimension of the locking member 17 is set to be approximately equal to the distance between the bottom portion 15d and the flange portion 15e of the support bracket 15,
The locking member 17 can be inserted tightly into the support bracket 15. and locking member 1
Projections 18a, which fit into the holes 16a, 16b of the support bracket 15, respectively, are provided on the outer surface of each side wall portion of the support bracket 15.
18b is formed. To facilitate insertion of the locking member 17 into the support bracket 15, at least the closed end 17a of each projection 18a, 18b
The width of the closer portion gradually increases from the closed end 17a to the open end 17d (FIG. 2).

When assembling the S spring 10 to the seat back frame 8, first the U-shaped end 10a of the S spring 10 is inserted into the locking member 17 and passed through the convex portion 17b to prevent it from coming out, and then the Insert the stopper member 17 into the support bracket 15 and attach each protrusion 18.
a, 18b may be fitted into the holes 16a, 16b. In this state, movement of the locking member 17 in the vertical direction in FIG. The locking member 17 is prevented from coming off from the locking member 15 by the protrusions 18a and 18b.

In the above embodiment, each S spring 10 is stretched across the seat back frame 8 in the vehicle width direction.
A similar S spring holding structure can be adopted when extending the seat back frame 8 in the vertical direction. Furthermore, when the seat bottom frame is pipe-shaped, the above-mentioned holding structure can also be applied to the S spring for the seat bottom. Further, the holding structure of the present invention can be employed even when the seat back frame or seat bottom frame is not pipe-shaped by providing a support portion equivalent to the support bracket 15 on the frame.

[Brief explanation of drawings]

Fig. 1 is a perspective view of the seat spring holding member of the present invention, Fig. 2 is a plan view of the locking member in the holding member of Fig. 1, and Fig. 3 is a longitudinal sectional view of the locking member of Fig. 2. , FIG. 4 is a perspective view of an automobile seat including the seat spring holding member of FIG. 1, and FIG. 5 is an exploded perspective view showing an example of a conventional seat spring holding structure. 8... Seat back frame (seat frame), 10... S spring (seat spring), 15...
Support bracket (support part), 15b, 15c...
Side wall portion, 15d...bottom, 15e...flange portion, 16a, 16b...hole (engaged portion), 17...
...Locking member, 18a, 18b...Protrusion (engaging portion).

Claims (1)

[Scope of utility model registration request] A resin cylindrical locking member that accommodates the U-shaped end of the seat spring, has a retaining protrusion at the upper end inside the locking member, and an engagement portion outside the locking member, and the seat frame is provided with the above-described locking member. A support portion is provided that includes an engaged portion to which the engaging portion is engaged when the locking member is inserted, and the width of the locking member is set between opposing side wall portions provided on the support portion. The height of the locking member is set to be approximately equal to the distance between the side walls of the support member and the flange bent from one of the side walls approximately parallel to the bottom of the support member. After inserting the end portion into the locking member and preventing it from coming off by the convex portion, the locking member is tightly fitted into the support portion and the engaging portion is inserted into the support portion. A seat spring holding structure characterized in that a seat spring is held by a support part through a locking member by engaging with an engaging part.