公开(公告)号：US20240102528A1

公开(公告)日：2024-03-28

申请号：US17954390

申请日：2022-09-28

Applicant: Hitachi Astemo, Ltd.

Inventor： Joel DONAHUE ,  Jordan TRUITT ,  Takeru YOKOTA ,  Koji MINAMINO

IPC: F16F9/18 ,  F16F9/32 ,  F16F9/348 ,  F16F9/36

CPC classification number: F16F9/185 ,  F16F9/3214 ,  F16F9/3271 ,  F16F9/348 ,  F16F9/368 ,  B60G13/08 ,  F16F2222/12 ,  F16F2226/04 ,  F16F2232/08 ,  F16F2234/02

Abstract: In this shock absorber, a piston includes a first piston body, a second piston body, and a piston band. The first piston body includes a first passage, a second passage, a first seat, and a second seat. The first seat communicates with the first passage and on which a first damping valve is placed. A second damping valve is placed on the second seat. The second piston body includes a third passage, a fourth passage, a third seat, and a fourth seat. The third seat communicates with the fourth passage and on which a third damping valve is placed. A fourth damping valve is placed on the fourth seat.

公开(公告)号：US20240410441A1

公开(公告)日：2024-12-12

申请号：US18690349

申请日：2022-12-21

Applicant: Hitachi Astemo, Ltd.

Inventor： Takeru YOKOTA ,  Gota NAKANO ,  Mikio YAMASHITA

IPC: F16F9/32 ,  F16F9/06 ,  F16F9/348 ,  F16F9/36 ,  F16F9/512

Abstract: A damping force generation device includes: a first regulation member configured to divide the inside of a tubular member into a first chamber and a second chamber and have a first flow path connected between the first chamber and the second chamber; and a second regulation member having a second flow path provided at least partially parallel to the first flow path and connected between the first chamber and the second chamber and a third flow path branching from the second flow path and connected to a pressure storage portion whose volume is changeable.