US 12,257,869 B2
Spring
Hiroyuki Ogiso, Nagoya (JP); Kazuyoshi Nono, Nagoya (JP); Hideo Yamashita, Nagoya (JP); and Yuichi Nakazawa, Nagoya (JP)
Assigned to CHUO HATSUJO KABUSHIKI KAISHA, Nagoya (JP)
Appl. No. 16/976,763
Filed by CHUO HATSUJO KABUSHIKI KAISHA, Nagoya (JP)
PCT Filed Mar. 6, 2019, PCT No. PCT/JP2019/008917
§ 371(c)(1), (2) Date Aug. 31, 2020,
PCT Pub. No. WO2019/172327, PCT Pub. Date Sep. 12, 2019.
Claims priority of application No. 2018-040752 (JP), filed on Mar. 7, 2018; and application No. 2018-040753 (JP), filed on Mar. 7, 2018.
Prior Publication US 2020/0406698 A1, Dec. 31, 2020
Int. Cl. B60G 11/52 (2006.01); F16F 1/12 (2006.01); F16F 3/12 (2006.01)
CPC B60G 11/52 (2013.01) [F16F 1/12 (2013.01); F16F 3/12 (2013.01); B60G 2206/42 (2013.01); B60G 2206/70 (2013.01); B60G 2206/724 (2013.01); B60G 2206/73 (2013.01); B60G 2206/821 (2013.01); B60G 2800/162 (2013.01); F16F 2224/02 (2013.01); F16F 2224/0208 (2013.01); F16F 2224/025 (2013.01); F16F 2226/042 (2013.01); F16F 2230/0005 (2013.01); F16F 2232/08 (2013.01)] 8 Claims
OG exemplary drawing
 
1. 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.