US 12,031,575 B2
Strut bearing device, and vehicle strut suspension
Kohei Shibata, Osaka (JP); Yasuhiro Narazaki, Osaka (JP); and Shogo Fukada, Osaka (JP)
Assigned to NAKANISHI METAL WORKS CO., LTD., Osaka (JP)
Filed by NAKANISHI METAL WORKS CO., LTD., Osaka (JP)
Filed on Oct. 4, 2022, as Appl. No. 17/937,904.
Claims priority of application No. 2021-172904 (JP), filed on Oct. 22, 2021.
Prior Publication US 2023/0128517 A1, Apr. 27, 2023
Int. Cl. B60G 15/06 (2006.01); F16C 19/10 (2006.01)
CPC F16C 19/10 (2013.01) [B60G 15/068 (2013.01); B60G 2204/418 (2013.01); F16C 2326/05 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A strut bearing device comprising:
a strut bearing; and
an upper spring seat that is a spring support component supporting an upper end of a coil spring, wherein
the strut bearing includes:
an upper case and a lower case;
an upper raceway ring held by the upper case;
a lower raceway ring held by the lower case; and
a rolling element that rolls between the upper raceway ring and the lower raceway ring,
the upper case and the lower case are made of a synthetic resin,
the upper spring seat is made of steel,
the upper spring seat has a cylindrical part and a disc part,
the cylindrical part has, at an upper part thereof, one of at least one engagement hole penetrated in a radial direction and at least one engagement recess having a hollowed inner peripheral surface,
the lower case has a cylindrical member fitted along an inner peripheral surface of the upper part of the cylindrical part,
the cylindrical member has, at an outer peripheral surface thereof, at least one engagement projection engaged with the at least one engagement hole or the at least one engagement recess,
each of the at least one engagement hole or the at least one engagement recess is provided at a location along a less than entire portion along a circumferential direction about the upper part of the cylindrical part of the upper spring seat,
each of the at least one engagement projection is provided at a location along a less than entire portion along a circumferential direction about the outer peripheral surface of the cylindrical member,
relative movement of the upper spring seat and the lower case in an axial direction is restricted in a state where the at least one engagement projection is engaged with the at least one engagement hole or the at least one engagement recess, and
the upper spring seat and the lower case are prevented from slidably moving in the circumferential direction by a structure in which the at least one engagement projection is engaged with the at least one engagement hole or the at least one engagement recess.