公开(公告)号：US10221909B2

公开(公告)日：2019-03-05

申请号：US15113777

申请日：2014-10-08

Applicant: PIOLAX, INC.

Inventor： Jun Saito

IPC: F16F9/32 ,  F16F9/02 ,  F16J1/00 ,  F16F9/36 ,  F16F9/516 ,  E05F5/10 ,  E05F3/02

Abstract: A damper device is configured so that a piston moves in a cylinder. A seal ring member is provided to the outer periphery of the piston to device the inside of the cylinder into a first chamber and a second chamber. A transmission member is connected to the piston and can transmit external force to the piston. A cutout section is formed with a predetermined circumferential width in a first stopper surface. A communication section has an opening in an annular outer peripheral section located closer to the second chamber than the cutout section. When the seal ring member is pressed toward the first stopper surface, the seal ring member is deformed so as to partially enter the cutout section.

公开(公告)号：US12234676B2

公开(公告)日：2025-02-25

申请号：US18011726

申请日：2021-06-23

Applicant: PIOLAX, INC.

Inventor： Jun Saito

IPC: E05C9/04 ,  E05B15/10 ,  E05B63/20 ,  E05B83/32

Abstract: There is provided a locking device including: a base member; a lock bar member; and a drive member. The base member includes a pair of facing surfaces sandwiching and supporting the lock bar member. The lock bar member includes a lock portion, a first bar portion extending in a sliding direction of the lock bar member, and a second bar portion extending in a direction intersecting the sliding direction and connecting the first bar portion and the lock portion. A first stepped portion is formed on the first bar portion, and a second stepped portion is formed on the second bar portion. Each of the facing surfaces is provided with step portions each of which faces the first stepped portion and the second stepped portion respectively in the direction intersecting the sliding direction at positions sandwiched between the first stepped portion and the second stepped portion.

公开(公告)号：US09638279B2

公开(公告)日：2017-05-02

申请号：US14508868

申请日：2014-10-07

Applicant: PIOLAX, INC.

Inventor： Hiroaki Ichioka ,  Jun Saito

IPC: A45C3/00 ,  F16F9/12 ,  B60N3/02

CPC classification number: F16F9/12 ,  B60N3/023 ,  F16F2230/30

Abstract: An embodiment provides a damper a damper including: a housing; a rotor; and a sealing member. The housing includes outer and inner cylinder portions to define a filling space portion therebetween for filling with a viscose fluid. The rotor includes a head portion and a cylinder portion extended downwardly therefrom so as to be inserted into the filling space portion. The sealing member seals the filling space portion. The rotor further includes axially-extending first and second groove portions provided on outer and inner peripheral surfaces of the cylinder portion near the bottom portion thereof. At least one of the first groove portions includes a communicating portion which communicates the inside and the outside of the rotor, and the second groove portion is apart from the communicating portion in a circumferential direction.

公开(公告)号：US11988263B2

公开(公告)日：2024-05-21

申请号：US17611789

申请日：2020-04-02

Applicant: PIOLAX, INC.

Inventor： Tomoyuki Hosoya ,  Jun Saito

IPC: F16F9/12 ,  F16H57/00

CPC classification number: F16F9/12 ,  F16H57/0006

Abstract: There is provided a damper device, including: a base; a rotor rotatably supported by the base; a cap defining a housing chamber of the rotor together with the base; and viscous liquid filled in the housing chamber. The base and the cap define a reservoir chamber for the viscous liquid on an outer side of the housing chamber in a radial direction. A gap between the housing chamber and the reservoir chamber is sealed.

公开(公告)号：US11761505B2

公开(公告)日：2023-09-19

申请号：US17503820

申请日：2021-10-18

Applicant: PIOLAX, INC.

Inventor： Jun Saito

IPC: F16F9/02 ,  F16F9/49 ,  F16F9/36 ,  F16F9/32

CPC classification number: F16F9/0227 ,  F16F9/3214 ,  F16F9/3242 ,  F16F9/368 ,  F16F9/49

Abstract: There is provided a damper device including: a cylinder; a piston; and a seal ring. The piston includes: a column portion wound around the seal ring; and a first restricting portion and a second restricting portion that are configured to restrict movement of the seal ring in a axial direction. The column portion has a protruding portion protruding outward in a radial direction. The first restricting portion has a cutout portion. The seal ring is capable of taking a deformed state where the seal ring is deformed so as to partially enter the cutout portion by movement of the piston. In a case where the seal ring is in the deformed state, and in a normal state where the seal ring does not enter the cutout portion, the seal ring is pressed against an inner peripheral surface of the cylinder by the protruding portion.