公开(公告)号：US20240003398A1

公开(公告)日：2024-01-04

申请号：US18252851

申请日：2021-09-06

Applicant: OILES CORPORATION

Inventor： Hiroshi WATANABE ,  Kenichi OKUMURA ,  Wataru NISHIOKA ,  Ryohei KANEKO

IPC: F16F9/14 ,  A47C1/024

CPC classification number: F16F9/145 ,  A47C1/024

Abstract: The present invention enables a simple structure to provide an easy adjustment of damping torque to be caused by applied rotation.
The rotary damper (1) is intend to limit movement of viscous fluid filled in a circular cylindrical chamber (111), thereby generating a damping torque in response to an applied rotational force. The lid (15) is the screw-on type capable of being screwed into the casing (11), and thus adjusting a clearance gap G1 between the lid (15) and each partition (115) by way of changing the screwing amount of the lid (15) into the casing (11) allows amount of viscous fluid moving through the clearance gap G1 to be adjusted, thereby resulting in adjustment of a damping torque to be caused by rotation. In addition, each axial force generation member (17) includes a plastically or elastically deformable element and is located between the lid (15) and the corresponding partition (115) to apply a reaction force to the lid (15). This causes screwing the lid (15) into the casing (11) to generate an axial force, thereby preventing external-leakage of the viscous fluid via a threaded interface between the lid (15) and the casing (11), and allows the leeway for the adjustment of the clearance gap G1 to increase.

公开(公告)号：US20170321780A1

公开(公告)日：2017-11-09

申请号：US15525152

申请日：2015-11-06

Applicant: OILES CORPORATION

Inventor： Naohiro HORITA ,  Ryohei KANEKO ,  Hiroshi WATANABE ,  Wataru NISHIOKA

IPC: F16F9/44 ,  F16F9/14

CPC classification number: F16F9/44 ,  F16F9/125 ,  F16F9/14 ,  F16F9/145 ,  F16F2230/186 ,  F16F2232/02

Abstract: [Problem] To provide a rotary damper wherein damping torque generated by rotation can be easily adjusted using a simple configuration. [Solution] A rotary damper 1 limits the movement of viscous fluid contained in a circular cylinder chamber 111, thereby generating damping torque against applied rotational force. This rotary damper 1 is configured such that: a lid 15 is screwed into a case 11; and the gap g1 between the lower surface 153 of the lid 15 and the upper surface 119 of a partition section 115 and the gap g2 between the lower surface 153 of the lid 15 and the upper surface 129 of a vane 122 can be adjusted by adjusting the amount of screwing of the lid 15 into the case 11. This means that adjusting the amount of movement of viscous fluid through the gaps g1, g2 can adjust damping torque generated by rotation.

公开(公告)号：US20200318706A1

公开(公告)日：2020-10-08

申请号：US16769629

申请日：2018-11-21

Applicant: OILES CORPORATION

Inventor： Hiroshi WATANABE ,  Ryohei KANEKO ,  Wataru NISHIOKA

IPC: F16F9/14 ,  F16F9/32

Abstract: A rotary damper (1) has a first sealing ring (8a) and a first bushing (4a) which are located between a through-hole (23) of a circular cylindrical chamber (21) inside a case (2) and a lower end part (33a) of a rotor body (31) of a rotor (3), and a second sealing ring (8b) and a second bushing (4b) which are located between a through-hole (60) in a lid (6) and an upper end part (33b) of the rotor body (31). The first sealing ring (8a) has an outer peripheral surface (85) having a width in a direction of a center axis of the circular cylindrical chamber (21) and being pressed against an inner peripheral surface (220) of the through-hole (23), and an inner peripheral surface (84) having a width in the direction of the center axis of the circular cylindrical chamber (21) and being pressed against an outer peripheral surface (34) of the lower end part (33a), and the second sealing ring (8b) has an outer peripheral surface (85) having a width in the direction of the center axis of the circular cylindrical chamber (21) and being pressed against an inner peripheral surface (64) of the through-hole 961 (60), and an inner peripheral surface (84) having a width in the direction of the center axis of the circular cylindrical chamber (21) and being pressed against the outer peripheral surface (34) of the upper end part (33b).

公开(公告)号：US20190331190A1

公开(公告)日：2019-10-31

申请号：US16309579

申请日：2017-06-13

Applicant: OILES CORPORATION

Inventor： Hiroshi WATANABE ,  Ryohei KANEKO

IPC: F16F9/14 ,  F16J15/16

Abstract: Provided is a damper wherein viscous fluid which fills a circular cylinder chamber is more reliably prevented from leaking.A rotary damper (1) includes: a first seal ring (8a) of an elastic body, arranged between a through-hole (23) of a circular cylinder chamber (21) in a case (2) and a lower end of a rotor body of a rotor (3); and a second seal ring (8b) of an elastic body, arranged between a through-hole (60) in a lid (6) and an upper end of the rotor body. The first seal ring (8a) has: an outer peripheral surface with a width in a direction of a center axis of the circular cylinder chamber (21), which is pressed against an inner peripheral surface of the through-hole (23); and an inner peripheral surface with a width in the direction of the center axis of the circular cylinder chamber (21), which is pressed against an outer peripheral surface of the lower end of the rotor body, and also a second seal ring (8b) has: an outer peripheral surface with a width in the direction of the center axis of the circular cylinder chamber (21), which is pressed against an inner peripheral surface of the through-hole (60); and an inner peripheral surface with a width in the direction of the center axis of the circular cylinder chamber (21), which pressed against an outer peripheral surface of the upper end of the rotor body.