US 12,454,982 B2
Bearing attachment structure
Tetsuaki Nomura, Isesaki (JP)
Assigned to SANKEI GIKEN KOGYO CO., LTD., Tokyo (JP)
Appl. No. 18/283,048
Filed by SANKEI GIKEN KOGYO CO., LTD., Tokyo (JP)
PCT Filed Mar. 26, 2021, PCT No. PCT/JP2021/013158
§ 371(c)(1), (2) Date Sep. 20, 2023,
PCT Pub. No. WO2022/201558, PCT Pub. Date Sep. 29, 2022.
Prior Publication US 2024/0167413 A1, May 23, 2024
Int. Cl. F16C 35/02 (2006.01); F01N 13/08 (2010.01); F02D 9/10 (2006.01)
CPC F16C 35/02 (2013.01) [F01N 13/08 (2013.01); F02D 9/10 (2013.01); F16C 2226/36 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A bearing attachment structure for attaching a bearing that supports a rotary shaft inserted into a housing, the bearing attachment structure comprising:
a bearing case including a base portion having a substantially cylindrical shape and a flange portion formed to spread outward from one end portion of the base portion in the axial direction, the bearing being installed in the base portion by press-fitting, wherein
the bearing case is disposed by aligning the flange portion with respect to the housing,
the bearing case is welded to the housing at the flange portion,
the flange portion is formed by bending the one end portion at one end of the base portion in the axial direction such that the one end of the substantially cylindrical shaped base portion is open to the housing, the one end being adjacent to the housing,
an opposite end of the substantially cylindrical shaped base portion opposite to the one end in the axial direction is open,
the bearing case is welded to the housing at an entire circumferential edge of the flange portion,
the substantially cylindrical shaped base portion has a single layer structure, and
the opposite end of the substantially cylindrical shaped base portion is bent outward away from an axis of the substantially cylindrical shaped base portion,
wherein the rotary shaft is coupled to a drive transmission portion of an actuator which rotates the rotary shaft via the drive transmission portion, the drive transmission portion abutting an end face of the bearing exposed through the opposite end of the substantially cylindrical shaped base portion.