JPH0349557Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a support spring device for a seat used in a seat back or seat cushion of a vehicle seat.

(Prior art) A support spring device for a seat in which a suitable number of support springs each having a large number of continuous S-shaped parts are stretched in parallel within a seat frame to form a seat support was developed in the Jitsukayo era. As seen in Publication No. 55-20926, it is widely used in vehicle seats such as automobiles, but conventional ones have a low spring strength in the main seat support part, which bears the heaviest load, and other parts. Because they are the same, the main seat support portion deteriorates, making it uncomfortable to sit on, and the outer shape of the bed plate mounted and supported on the seat support portion and the seat cover covered therewith are likely to collapse. In order to eliminate such drawbacks, some of the many S springs in the seat support should be made elastic for each block, as seen in Utility Model Publication No. 10647/1982 and Publication No. 19890 of 1983. Although a connection using a weak connecting member has been proposed, the elasticity of each S-shaped portion is not limited in any way, so partial deterioration cannot be prevented. Therefore, attempts have been made to make the S-shaped part larger in diameter or to pre-stretch this part to give it more durability, but these When used under certain conditions, it is still insufficient and there is a problem in that the main seat support part sag.

(Problems to be solved by the invention) The present invention was completed with the aim of solving the above-mentioned problems and creating a seat spring device that can withstand repeated use under severe conditions. .

(Means for Solving the Problems) The present invention, which attempts to solve the above-mentioned problems, consists of stretching an appropriate number of support springs in which a number of S-shaped portions are continuously formed in parallel within a support frame. In the support spring device for a seat, the plurality of S-shaped parts of the support springs of the seat support part, which are continuous to the main seat support part, are connected by a connecting member with poor elasticity. and each S-shaped portion is connected to a connecting member, and the support spring is supported from below by the connecting member and sub-wires arranged in parallel at a required interval on the support frame. It is characterized by:

(Function) In a device configured in this way, a bed plate (not shown) is mounted and supported on the seat support part, and a seat cover is covered to use it as a seat. This is similar to the conventional support spring device for this type of seat, in which an appropriate number of support springs are stretched in parallel within a support frame to form a seat support, but the support springs for the seat support in the present invention are This method connects multiple S-shaped parts that are continuous to the main seat support part, which receives the heaviest load such as the butt support part, with a connecting member that has poor elasticity, and connects each S-shaped part to a connecting member. Not only is it clipped, but it is also supported from below by the connecting member and the sub-wires that are arranged in parallel at the required intervals on the support frame, so that the static spring constant of the main seat support part is lower than that of other parts. If the value is larger than that, it becomes difficult to bend, making it uncomfortable to sit on even after long-term use, and causing the outer shape of the bed plate mounted and supported on the seat support and the seat cover covered with it to collapse. Never.

(Example) Next, the present invention will be described in detail using a support spring device for an automobile seat cushion as shown in the drawings as an example.

1 is a support frame, and the support frame 1
Inside the upper frame part, a support spring 2 called an S spring, in which a large number of S-shaped parts 2a are continuously formed, is stretched in an appropriate number at a required interval to form a seat support part 3. Reference numeral 4 denotes the main seat support part of the seat support part 3, and the main seat support part 4 is located at the rear part of the seat support part 3, which corresponds to the butt support part that receives the largest load.
The rear part of each support spring 2 located at
The S-shaped portion 2a is connected to each support spring 2 by a connecting member 5 having poor elasticity to prevent the S-shaped portion 2a in the main seat support portion 4 from being stretched beyond a certain level. The illustrated connecting member 5 is made of a steel wire rod whose intermediate portion is gently bent into an F-shape, and both ends of which are largely bent to serve as connecting ends. A plurality of S
Although the character-shaped portions 2a are connected, the material, shape, connecting means, etc. of the connecting member 5 are not limited to these. Reference numeral 7 denotes a sub-wire that connects the support springs 2 stretched in parallel to each other on their lower surfaces, and the sub-wire 7 is a clip similar to the clip 6 for connecting the connecting member 5 at right angles to the support springs 2. The sub wire 7 and the connecting member 5 support the support spring 2 from below, and the main seat support part 4
The expansion and contraction is done in a well-balanced manner.
Note that it is preferable not to use the clip 6 on the buttrest part of the main seat rest 4, since this will not give a feeling of foreign body, but if the clip 6 is used in the buttrest part, then It is preferable to place felt on the top surface of the holder.

(Effects of the invention) As is clear from the above description, the present invention has a seat support part by stretching an appropriate number of support springs each having a large number of S-shaped parts in parallel in a support frame. In the formed seat support spring device,
Among the support springs of the seat support portion, a plurality of S-shaped portions that are continuous to the main seat support portion are connected by a connecting member having poor elasticity, and each S-shaped portion is connected to the connecting member. Since the rigidity of the main seat support part is increased by supporting it from below with the sub-wires arranged in parallel at required intervals on the support frame and the connecting member, each S-shaped part constituting the main seat support part is Compared to other S-shaped parts, it is less flexible and maintains a comfortable sitting comfort and appearance for a long period of time.
Some of the continuous S-shaped parts of this type of conventional support spring are connected by a connecting member, and each S-shaped part is connected by a connecting member.
Since it is only necessary to connect each character part to the connecting member, it has the advantage of being easy to mass produce and can be provided at low cost.It also has great practical value as it solves the problems of conventional seat support spring devices. be.

[Brief explanation of drawings]

The drawing is a partially cutaway perspective view of a main part showing an embodiment of the present invention. 1...Support frame, 2...Support spring,
2a... S-shaped part, 3... Seat support part, 4... Main seat support part, 5... Connecting member, 6... Clip, 7... Sub wire.

Claims (1)

[Scope of utility model registration request] In a support spring device for a seat, in which a seat support portion 3 is formed by extending an appropriate number of support springs 2 in which a large number of S-shaped portions 2a are continuously formed in parallel in a support frame 1, the seat support A plurality of S-shaped portions 2a of the support spring 2 of the portion 3 that are continuous to the main seat support portion 4 are connected by a connecting member 5 with poor elasticity, and each S-shaped portion 2a is connected to the connecting member 5. A support spring for a seat, characterized in that the support spring 2 is supported from below by the subwire 7 and the connection member 5 arranged in parallel on the support frame 1 at a required interval. Device.