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Suspension coil spring device

A technology of coil springs and compressed coil springs, which is applied in the field of coil spring devices for suspension, can solve problems such as peeling of coating films, damage of compressed coil springs, and breakage of compressed coil springs, and achieves suppression of deterioration, excellent productivity, and excellent adhesion excellent effect

Pending Publication Date: 2021-03-30
NHK SPRING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although a coating film is formed on the surface of the compression coil spring, when the compression coil spring expands and contracts with hard foreign matter such as sand grains sandwiched between the compression coil spring and the spring seat, the coating film peels off and rusts, or the The case where the surface of the compression coil spring is damaged by trapped foreign matter
The damaged part will be rusted, and if the rust is serious, it will become the cause of the breakage of the compression coil spring.

Method used

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  • Suspension coil spring device
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Embodiment Construction

[0030]

[0031] A coil spring device for suspension according to the present invention includes a compression coil spring, antivibration rubber, and an adhesive layer.

[0032] Hereinafter, an embodiment of the coil spring device for suspension according to the present invention will be described in detail with reference to the drawings.

[0033] like figure 1 As shown, the coil spring device 1 for suspension according to this embodiment includes a compression coil spring 10 and anti-vibration rubber 20 . The compression coil spring 10 is formed in a helical shape, and has a first end portion 10a and a second end portion 10b.

[0034] like figure 2 As shown, the first end portion 10 a and the anti-vibration rubber 20 are bonded by an adhesive layer 30 . The second end portion 10b can be housed in a spring holding member (not shown). The helical spring device 1 for suspension can be used in particular in the suspension structure of a motor vehicle, in which case vertical...

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Abstract

This suspension coil spring device (1) is provided with a compression coil spring (10) having a coating film; an anti-vibration rubber (20); and an adhesive layer for joining the compression coil spring (10) and the anti-vibration rubber (20), wherein the adhesive layer is a cured product of a reactive hot melt-based adhesive.

Description

technical field [0001] The present invention relates to a suspension coil spring device used in a suspension structure of vehicles such as automobiles. [0002] This application claims priority based on Japanese Patent Application No. 2018-157586 for which it applied to Japan on August 24, 2018, and uses the content here. Background technique [0003] A suspension coil spring device including a compression coil spring is used in a suspension structure of a vehicle such as an automobile. If a flying stone or the like hits the compression coil spring while the vehicle is running, it will cause the compression coil spring to break. Therefore, the surface of the compression coil spring is protected by the coating film. [0004] In a coil spring device for suspension, the coil spring is held in compression by a spring seat that absorbs vibrations. Sometimes foreign matter such as sand is caught between the compression coil spring and the spring seat. Although a coating film i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16F1/12B60G11/16
CPCB60G11/16B60G2204/12422B60G2202/12F16F1/126B60G11/52B60G2202/143B60G2206/42B60G2206/821
Inventor 柴田优一诹访泰亮
Owner NHK SPRING CO LTD