公开(公告)号：US11415221B2

公开(公告)日：2022-08-16

申请号：US16496988

申请日：2018-03-23

Applicant: PIOLAX, INC.

Inventor： Kouichi Kato

IPC: F16J1/18 ,  F16F9/50 ,  F16F9/54

Abstract: A damper device includes a cylinder including an attachment portion and a piston including an attachment portion. The attachment portion of at least one of the cylinder and the piston includes an elastic portion which urges a pin member inserted therein in an axial direction and a radial direction. The elastic portion includes an axial abutment portion which abuts on a large-diameter portion of the pin member protruding radially outward from an outer peripheral surface of the pin member; and a radial abutment portion which abuts on the outer peripheral surface of the pin member.

公开(公告)号：US11739808B2

公开(公告)日：2023-08-29

申请号：US16968516

申请日：2019-03-22

Applicant: PIOLAX, INC.

Inventor： Kouichi Kato

IPC: F16F9/32 ,  B60R7/06

CPC classification number: F16F9/3242 ,  B60R7/06 ,  F16F9/3214

Abstract: Provided is a damper capable of securely assembling a cap on an outer circumference of a rod while reducing a diameter of the cap and reducing an outer diameter of a cylinder. A damper has a cylinder, a rod, and a cap attached to an opening of the cylinder. The rod has a piston on its tip side and a mounting portion mounted on the other of a pair of members on its base end side, the cap has a main body that extends in an axial direction of the rod, and the main body is formed with a receiving opening that can receive the rod from an outside in a radial direction thereof.

公开(公告)号：US11459812B2

公开(公告)日：2022-10-04

申请号：US16980585

申请日：2019-03-22

Applicant: PIOLAX, INC.

Inventor： Kouichi Kato

IPC: F16F9/02 ,  E05F3/12 ,  F16F9/32 ,  F16F9/516

Abstract: A damper includes a cylinder, a rod including a first engaging portion at a tip end thereof, and a piston formed of an elastic resin material. The piston includes a convex portion provided so as to protrude at a base end portion located on a rod base end side and always in pressure contact with an inner circumference of the cylinder. During damper braking, the first engaging portion of the rod abuts against the other end portion of the piston, and an axial compression force acts on the piston between the first engaging portion and the convex portion in pressure contact with the inner circumference of the cylinder.

公开(公告)号：US10458169B2

公开(公告)日：2019-10-29

申请号：US16071041

申请日：2017-01-12

Applicant: PIOLAX, INC.

Inventor： Kouichi Kato

IPC: E05F5/02 ,  B60R7/06 ,  E05F5/00 ,  F16F7/00 ,  F16F7/08

Abstract: A damper device provided between a fixed body having an opening portion and an openable and closable body mounted on the opening portion and configured to apply a braking force to the openable and closable body. An elastic resin member is mounted on a projecting portion provided on the openable and closable body. A receiving recess portion is provided on the fixed body to receive the elastic resin member. The elastic resin member has a base portion; a pair of arm portions; a bridge portion; and a stopper, which are formed integrally. The receiving recess portion has: an introducing portion configured to abut with the arm portions to bend them diametrically towards each other; and a restricting portion configured to abut with the stopper to restrict the openable and closable body from opening, when the openable and closable body opens to cause the elastic resin member to move.