公开(公告)号：US20240309933A1

公开(公告)日：2024-09-19

申请号：US18121649

申请日：2023-03-15

Applicant: Hitachi Astemo, Ltd.

Inventor： Jordan TRUITT ,  Sean LUNDBERG ,  Yohei KATAYAMA ,  Takashi TSUKAHARA ,  Shivanand SANKARAN

IPC: F16F9/516 ,  F16F9/32 ,  F16F9/348

CPC classification number: F16F9/516 ,  F16F9/3235 ,  F16F9/3481 ,  F16F2232/08

Abstract: This shock absorber includes a tube, a piston rod having one end portion in an axial direction disposed in the tube and the other end portion in the axial direction disposed outside the tube, a piston assembly connected to an intermediate position of the piston rod in the axial direction, dividing an inner chamber into a first chamber on the other end portion side of the piston rod and a second chamber on the one end portion side of the piston rod, and configured to generate a damping force when the piston rod moves, and a damping force increasing mechanism increasing the damping force when the piston assembly moves to the second chamber side. The damping force increasing mechanism includes a first cylinder connected to the one end portion side of the piston rod with respect to the piston assembly, and a partition piston entering inside of the first cylinder.

公开(公告)号：US20230037408A1

公开(公告)日：2023-02-09

申请号：US17791773

申请日：2021-01-20

Applicant: Hitachi Astemo, Ltd.

Inventor： Milton MUZVIDZIWA ,  Koichi YAMAKA ,  Yohei KATAYAMA

IPC: F16F9/32 ,  F16F9/19 ,  F16F9/34 ,  F16F9/46

Abstract: A piston bolt is formed by divided first and second members, and a first small-diameter portion and a large diameter portion of a common passage are formed in the first member and a second small-diameter portion of the common passage is formed in the second member. This configuration allows the common passage to be processed using a general-purpose method and tool and contributes to reducing the man-hours for the piston bolt.

公开(公告)号：US20220319751A1

公开(公告)日：2022-10-06

申请号：US17597076

申请日：2020-04-20

Applicant: Hitachi Astemo, Ltd.

Inventor： Yuichiro TANAKA ,  Shinji SETO ,  Norio NAKAZATO ,  Shunsuke MORI ,  Yohei KATAYAMA ,  Teruaki YAMANAKA ,  Motohiro HIRAO

IPC: H01F5/06 ,  H01F5/02 ,  H01F27/32

Abstract: The solenoid coil includes a coil having a first end surface and a second end surface on its both ends in an axial direction, a member which is in contact with the first end surface, and has a groove through which the wire material of the coil passes, and an insulating resin formed to coat at least an outer circumferential surface and the second end surface of the coil. The resin with a substantially U-shaped section is continuously coated on at least a part of an inner circumferential surface of the coil via an area from the outer circumferential surface to the second end surface.