DAMPER DEVICE - PIOLAX INC

Title:

DAMPER DEVICE

Document Type and Number:

WIPO Patent Application WO/2023/171654

Kind Code:

A1

Abstract:

Provided is a damper device that attains a high damper braking force by sufficiently deforming a friction member in the radial direction when a piston moves to a damper braking direction. This damper device 10 comprises: a cylinder 20; a rod 30; a piston 40 provided with a ring-shaped groove 50; a sealing ring 60; a friction member 70; and a seal unit. The seal ring 60 presses the friction member 70 to increase the diameter thereof, causing the outer peripheral surface of the friction member 70 to be pressed against the inner peripheral surface of the cylinder 20 when the piston 40 moves in a damper braking direction F1. The friction member 70 is configured so as to have a smaller diameter than the inner peripheral surface of the cylinder 20 when not under pressure from the seal ring 60.

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Inventors:

SAITO JUN (JP)

Application Number:

PCT/JP2023/008514

Publication Date:

September 14, 2023

Filing Date:

March 07, 2023

Export Citation:

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Assignee:

PIOLAX INC (JP)

International Classes:

F16F7/09; F16F9/02; F16F9/32

Foreign References:

US20120175830A1	2012-07-12
US20130118846A1	2013-05-16
JP2018071595A	2018-05-10