Spring
AssigneeChuo Hatsujo Kabushiki Kaisha
InventorsHiroyuki Ogiso, Kazuyoshi Nono, Hideo Yamashita, Yuichi Nakazawa
Life of this patent
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Abstract
This spring used for a suspension device for a vehicle is provided with: a metal wire material which constitutes a spring section and which has a cover layer provided on the surface thereof; and a seat section which is subjected to a load acting on the spring section, is formed from an elastically deformable material, and is bonded to the cover layer by an adhesive. The difference between the hardness of the seat section and the hardness of the adhesive is greater than the difference between the hardness of the adhesive and the hardness of the cover layer.
Claims8
A spring for a suspension device, configured to be used in a suspension device for a vehicle, comprising:
- a wire made of metal, constituting a spring section, and provided with a coating layer on a surface of the wire;
- and
- an adhesion layer comprising an adhesive;
- a seat section made of an elastically deformable material, configured to bear load acting on the spring section, and adhered to the coating layer by the adhesive;
- wherein the adhesion layer of the adhesive has a thickness dimension of 1 mm, and the coating layer has a thickness dimension of about 40 μm,
- wherein a difference between a hardness of the seat section and a hardness of the adhesive is greater than a difference between the hardness of the adhesive and a hardness of the coating layer;
- peeling is more likely to occur at a boundary surface between the seat section and the adhesion layer than at a boundary surface between the adhesion layer and the coating layer.
Dependencies are inferred from the claim text.