公开(公告)号：US20230079968A1

公开(公告)日：2023-03-16

申请号：US18054748

申请日：2022-11-11

Applicant: Hitachi Astemo, Ltd.

Inventor： Gota NAKANO ,  Chikara YANAGISAWA

IPC: F16F9/34

Abstract: A damping-force generation mechanism includes: a first flow path forming portion forming a flow path in which a fluid flows; a first valve configured to control a flow of the fluid in the flow path; a back pressure chamber forming portion forming a back pressure chamber configured to apply a back pressure to the first valve; a second flow path forming portion including a plurality of connection flow paths connected to the back pressure chamber; and a second valve provided to face the second flow path forming portion and configured to control flows of the fluid in the plurality of connection flow paths.

公开(公告)号：US20240229963A1

公开(公告)日：2024-07-11

申请号：US18610986

申请日：2024-03-20

Applicant: Hitachi Astemo, Ltd.

Inventor： Gota NAKANO ,  Chikara YANAGISAWA

IPC: F16K31/06 ,  B60G17/06 ,  F16K1/46

CPC classification number: F16K31/0675 ,  B60G17/06 ,  F16K1/46 ,  B60G2600/26

Abstract: A solenoid includes: a solenoid unit including a coil and an inner protruding portion covering a periphery of the coil by molded resin; a housing into which the inner protruding portion is inserted; and a sealing element configured to seal a gap between the solenoid unit and the housing. The solenoid unit includes an inclined surface extending in a direction that intersects a direction of insertion of the inner protruding portion into the housing. The housing includes an inclined surface extending in a direction that intersects the direction of insertion. The sealing element is configured to seal the gap by coming into contact with the inclined surface of the solenoid unit and the inclined surface of the housing.

公开(公告)号：US20220412427A1

公开(公告)日：2022-12-29

申请号：US17900418

申请日：2022-08-31

Applicant: Hitachi Astemo, Ltd.

Inventor： Gota NAKANO ,  Chikara YANAGISAWA

IPC: F16F9/46 ,  F16F9/18 ,  F16F9/348 ,  F16F9/34 ,  F16F9/516

Abstract: A damping force generating mechanism includes: a flow passage formation part that forms a flow passage through which a liquid flows; and a valve that is configured to control a flow of the liquid in the flow passage. The flow passage formation part includes a first seat part that is provided radially outward of a flow passage port of the flow passage, protrudes from the flow passage port and contacts the valve, a second seat part that is provided radially outward of the first seat part, protrudes from the flow passage port and contacts the valve, and a circulation part having an orifice that allows the liquid to flow from the flow passage port toward the second seat part in a state in which the valve is in contact with the first seat part.