JPH0650545U - Seat spring device - Google Patents

Abstract

(57) [Summary] [Purpose] No noise is generated at the connecting parts of the support springs when getting on and off, and the connecting work at the bent parts is simplified, making it easy to manufacture and seating at low cost. Providing a support spring device. [Structure] A proper number of supporting springs 3 each having a large number of bent portions 2 formed in a support frame 1 are formed by a thermoplastic elastomer having opposing bent portions 2, 2 having branch portions 5a, 5a. It is stretched as a connection with the tool 5.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a seat supporting spring device used for a seat back or a seat cushion of a vehicle seat or the like.

[0002]

[Prior art]

 A seat support spring device in which a suitable number of support springs, each having a number of S-shaped bends formed continuously, are stretched in a seat frame and a part of which is connected by a metal connector is actually used. It is widely used in vehicle seats such as automobiles as seen in Japanese Utility Model Laid-Open No. 52-84301, Japanese Utility Model Laid-Open No. 54-79209, and Japanese Utility Model Laid-Open No. 58-126056, but The objects were annoying because abnormal noise was generated at the connection part with the metal connection tool when getting on and off. For this reason, it has been attempted to apply a resin coating to the bent portion of the metal connector or the support spring, but the metal connector and the support connector are also troublesome even if only the connection work with the metal connector is required. There was a problem that applying a resin coating to the bent portion of the pulling would increase the cost.

[0003]

[Problems to be solved by the device]

 The problem to be solved by the present invention is to solve the above-mentioned problems and prevent abnormal noise from being generated at the connecting portion such as when getting on and off, and the connecting work at the bent portion is easy and easy to manufacture. The purpose is to provide a seat support spring device that can be mass-produced at low cost.

[0004]

[Means for Solving the Problems]

 In the seat support spring device according to the present invention, which solves the above-mentioned problems, an appropriate number of support springs having a large number of bends formed in a support frame cover each bend with the facing bends. It is characterized in that it is stretched as being connected by a molding connecting tool made of a thermoplastic elastomer having branch portions.

[0005]

[Action]

 Such a seat support spring device is used to mount and support a pressure plate (not shown) and to use it as a seat by covering a suitable number of support springs with many bent portions. This is similar to the conventional support spring device of this type of seat that is stretched in the support frame to form the seat receiving portion, but the supporting spring of the seat receiving portion in the present invention has a large number of bent portions. The bent portions of the support spring facing each other are formed by a molded connecting member made of a thermoplastic elastomer having a branch portion covered by each bent portion, and the connecting portion has elasticity. Moreover, no sound is produced by contact with metal.

[0006]

【Example】

 Next, the present invention will be described in detail with reference to an example of a supporting spring device for a vehicle seat cushion shown in the drawings. Reference numeral 1 denotes a metal support frame, and an appropriate number of support springs 3 each having a plurality of bent portions 2 continuously formed between the upper frame portions of the support frame 1 are bent at their end portions. The end portion 4 is stretched under a required distance to form a seat receiving portion. Denoted at 5 and 6 are molded connecting members forming the connecting portions of the bending portions 2 and 2 of the supporting spring 3 which face each other and the connecting portion between the supporting frame 1 and the bending end portion 4 of the supporting spring 3. Both of the molding connectors 5, 6 are made of thermoplastic elastomer such as thermoplastic polyester elastomer, polyurethane elastomer, polyamide elastomer, etc., and a proper number of support springs 3 are formed in the molding connectors 5, 6. A suitable number of support springs 3 are connected by a molding connector 5 by arranging them on a mold in which corresponding mold recesses are formed, injecting a molding material into each mold recess, and curing and then releasing from the mold. It is assumed that the portion 4 is a reticulated spring provided with a molding connector 6. Then, in the molded connector 5 forming the connecting portion between the bent portions 2 and 2, the branch portions 5a, 5a, 5a and 5a covering the bent portions 2 and 2 of the supporting spring 3 facing each other are radiated from the center. The molded connector 6 that extends in a circular shape but constitutes a connecting portion between the support frame 1 and the bent end portion 4 of the support spring 3 has branch portions 6a and 6a that cover the bent end portion 4 and are supported by the frame. 1 is branched from the connecting leg portion 6b.

In the case of the present invention, in the present invention, when a seat plate (not shown) is mounted and supported and a seat cover is used as a seat, like the conventional support spring device of this type of seat, A plurality of bent portions 2 and 2 of a support spring 3 stretched in the support frame 1 and the bent portions 2 and 2 of a support spring 3 stretched in the support frame 1 adjacent to the bent portions 2 and 2 face each other. The bent portions 2 and 2 are connected to each bent portion 2 by a molding connector 5 made of a thermoplastic elastomer molded so that the branch portions 5a, 5a, 5a and 5a are covered. Since the connecting parts of the support spring 3 of the seat receiving part do not come into contact with each other, the molded connecting tool 5 itself has an excellent spring property, and it is flexible and does not generate a sound even when it comes into contact with metal. When getting on and off It is comfortable to use and does not produce annoying noise even when subjected to strong vibrations.

Moreover, since the appropriate number of support springs 3 are automatically connected at the required bent portions 2 and 2 by molding the molding connector 5, the support springs 3 and 3 are supported by the support frame 1. There is no need to manually connect with a connecting tool after or before tensioning inside, and there is an advantage that it is easy to manufacture and can be mass-produced at low cost. Further, as in the embodiment, the connection of the bent end portion 4 of the support spring 3 to the support frame 1 is performed by using the molded connecting member 6 made of a thermoplastic elastomer having the branch portions 6a and 6a covered by the bent end portion 4. If it is performed, it is more preferable because abnormal noise is not generated at the connecting portion with the support frame 1.

[0009]

[Effect of device]

 As will be apparent from the above description, the present invention provides a connection of opposing bending portions of a support spring stretched in a supporting frame with a molded connecting member made of a thermoplastic elastomer in which each bending portion is covered with a branch portion. Since it was done, it is possible to eliminate the generation of abnormal noise caused by the support springs coming into contact with each other when getting on and off, etc. In addition, since the connecting work at the bending part is easy, the assembly workability is improved and mass production at low cost. It has advantages such as being able to do so, and it has an extremely large practical value as a solution to the problems of the conventional spring device of this type of seat.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

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

FIG. 3 is a plan view showing a main part of another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Support frame 2 Bending part 3 Support spring 4 Bending end part 5 Molded connection tool 5a Branch part 6 Molded connection tool 6a Branch part

Claims (2)

[Scope of utility model registration request] 1. A number of bends (2) in a support frame (1)
An appropriate number of supporting springs (3) formed with the bent portions (2), (2) having branch portions (5a), (5a) covered by each bent portion (2). A spring device for a seat, which is stretched as being connected by a molded connecting member (5) made of a thermoplastic elastomer. 2. The connection of the bent end (4) of the support spring (3) to the support frame (1) has branches (6a), (6a) covered by the bent end (4). 2. A molding connector (6) made of a thermoplastic elastomer.
The seat spring device described in.