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公开(公告)号：US12222018B2
公开(公告)日：2025-02-11
申请号：US17640857
申请日：2020-09-25
Applicant: Hitachi Astemo, Ltd.
Inventor： Kazuya Yamada , Kentaro Yamada , Reiji Nakagawa , Hiroyasu Sato , Sadatomo Matsumura , Wataru Takagi
Abstract: This shock absorber includes a piston main body and a piston band. The piston main body has, at an outer peripheral portion thereof, a stepped portion including a large-diameter surface portion, a stepped surface portion and a small-diameter surface portion. The piston band has, at an outer peripheral portion thereof, a large diameter portion, a medium diameter portion formed so as to have a smaller diameter than the large diameter portion, and a small diameter portion formed between the large diameter portion and the medium diameter portion so as to have a smaller diameter than the medium diameter portion, in a state before being disposed in a cylinder. At one end on the side close to a tip portion of a piston rod, an inner peripheral surface is inclined toward the piston main body side from the large-diameter surface portion to a small-diameter surface portion of the stepped portion.
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公开(公告)号：US12115830B2
公开(公告)日：2024-10-15
申请号：US18023943
申请日：2021-08-30
Applicant: Hitachi Astemo, Ltd.
Inventor： Sadatomo Matsumura , Koichi Yamaka , Naoya Tokoo , Yoshihiro Yamaguchi
CPC classification number: B60G3/06 , B60G13/06 , B60G15/063 , B60G2200/142
Abstract: This shock absorber is disposed between a vehicle body and an axle. The shock absorber includes a bottomed cylindrical cylinder, a spring seat, and a mold release rib. The spring seat is formed integrally with the cylinder. The spring seat protrudes in a radial direction of the cylinder from the cylinder to support a suspension spring. The mold release rib is formed integrally with the cylinder and the spring seat. The mold release rib connects an outer circumferential portion of the spring seat and the cylinder. The mold release rib has a face part provided at an outer end portion of the cylinder in the radial direction.
