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公开(公告)号：US20230392666A1
公开(公告)日：2023-12-07
申请号：US18032295
申请日：2021-11-30
Applicant: KYB Corporation
Inventor： Masaki KOYAMA , Norihiro ASANO , Takeshi YASUI
CPC classification number: F16F9/368 , F16F9/3214 , F16F9/348 , F16F9/5126 , F16F9/3278 , F16J15/162 , F16J15/32 , F16F2230/30 , F16F9/19
Abstract: A sealing device for hydraulic equipment according to the invention includes an outer member having an annular shape, an inner member inserted into the outer member, and a seal ring housed in an annular groove disposed in the outer circumference of the inner member and abutting on the outer member to prevent a liquid from passing through a gap between the outer member and the inner member. The annular groove of the inner member has a bottom portion including a recess for restraining axial displacement of the seal ring relative to the annular groove.
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公开(公告)号：US20230193973A1
公开(公告)日：2023-06-22
申请号：US17923423
申请日：2021-05-06
Applicant: KYB CORPORATION
Inventor： Takeshi YASUI
CPC classification number: F16F9/5126 , F16F9/348 , F16F9/19 , F16F2222/12 , F16F2228/066 , F16F2232/08 , F16F2234/02 , F16F9/065
Abstract: A shock absorber includes: a shock absorber main body that has an outer tube and a rod movably inserted into the outer tube and can extend and contract; a main passage and a sub passage that communicate in parallel two working chambers provided in the shock absorber main body; a main damping force generation element provided in the main passage; and a sub damping force generation element provided in the sub passage. The main damping force generation element has only a main valve that opens and closes the main passage. The sub damping force generation element has an orifice provided in series with the sub passage, and a sub valve that opens and closes the sub passage and has a valve opening pressure lower than that of the main valve.
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公开(公告)号：US20210010557A1
公开(公告)日：2021-01-14
申请号：US16982917
申请日：2019-04-02
Applicant: KYB Corporation
Inventor： Kazuyuki KIMISHIMA , Takeshi YASUI
Abstract: The valve includes a valve case; an annular valve body, an outer peripheral end of which is a free end movable to both sides in an axial direction with respect to the valve case; a facing portion provided in the valve case, the facing portion including an annular facing surface which is located on an outer peripheral side of the valve body and is configured to face the free end with a gap; and first and second valve stoppers which are located on both sides respectively in the axial direction of the valve body. The first and second valve stoppers, respectively, have a plurality of support portions that are configured to support different positions of the valve body in a radial direction at different heights when the valve body deflects.
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公开(公告)号：US20250052295A1
公开(公告)日：2025-02-13
申请号：US18718634
申请日：2023-01-13
Applicant: KYB Corporation
Inventor： Takeshi YASUI
IPC: F16F9/348
Abstract: A damping valve of the present invention includes: a partition wall body that is annular, and is inserted into a cylindrical body, is radially positioned only by the cylindrical body, and has an annular outer circumferential valve seat protruding axially from an axial one end and a port provided on an inner circumferential side of the outer circumferential valve seat; a valve stopper having an annular inner circumferential valve seat facing the one end of the partition wall body and having an outer diameter smaller than that of the outer circumferential valve seat; and an annular leaf valve that is interposed between the outer circumferential valve seat and the inner circumferential valve seat and is set to be open to both the inside and the outside to open and close the port, wherein the partition wall body includes an aligning portion that aligns the leaf valve with respect to the outer circumferential valve seat.
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公开(公告)号：US20220316549A1
公开(公告)日：2022-10-06
申请号：US17690752
申请日：2022-03-09
Applicant: KYB CORPORATION
Inventor： Takeshi YASUI , Masaki KOYAMA , Naoki YAMAMOTO
Abstract: A shock absorber is provided. The shock absorber of the present invention includes a shock absorber main body, a damping passage, a primary damping force generation component, and a secondary damping force generation component. The shock absorber main body has an outer tube and a rod and is stretchable. The damping passage communicates operating chambers with each other provided in the shock absorber main body. The primary and secondary damping force generation components are provided in series with the damping passage. The secondary damping force generation component includes a secondary valve, an annular facing portion, and a valve stopper. The annular facing portion faces the secondary valve with an annular gap between the annular facing portion and the secondary valve. The valve stopper has elasticity to allow bending, and when the secondary valve bends and comes in contact with the valve stopper, restricts the secondary valve from bending.
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Patent Agency Ranking
公开(公告)号：US20210131517A1
公开(公告)日：2021-05-06
申请号：US17088748
申请日：2020-11-04
Applicant: KYB Corporation , TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Takeshi YASUI , Kazuyuki MIZUNO
Abstract: A damping valve includes: a ring-shaped leaf valve having either one of an outer circumference and an inner circumference as a free end, the free end being allowed to be deflected toward both sides in the axial direction; a ring-shaped opposing portion that opposes the free end of the leaf valve with a gap; a first sub leaf valve stacked on one side of the leaf valve in the axial direction; and a first passage formed in the leaf valve so as to extend in parallel with the gap, the first passage being configured to be opened when the leaf valve is deflected in the direction away from the first sub leaf valve.
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公开(公告)号：US20200256417A1
公开(公告)日：2020-08-13
申请号：US16761733
申请日：2018-12-12
Applicant: KYB Corporation
Inventor： Kazuyuki KIMISHIMA , Tomohiko BABA , Takeshi YASUI
IPC: F16F9/348
Abstract: A valve includes: a valve case; and an annular valve body, one of the inner circumference end and the outer circumference end of the valve body being formed as the free end capable of moving towards both sides in the axial direction with respect to the valve case. The valve case has the annular opposing surface capable of opposing to the free end so as to form the gap therebetween, and the guide surface that is positioned on one side of the opposing surface in the axial direction, the guide surface being continuous with the part of the opposing surface in the circumferential direction. The guide surface is inclined in the direction away from the valve body as the distance from the opposing surface is increased.
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公开(公告)号：US20240418233A1
公开(公告)日：2024-12-19
申请号：US18704088
申请日：2022-11-01
Applicant: KYB Corporation
Inventor： Masaki KOYAMA , Kiyoshi KANI , Takeshi YASUI
Abstract: A seal device for a hydraulic apparatus according to the present invention includes an annular main piston split body (outer member), a sub piston split body (inner member) inserted into inside the main piston split body (outer member), and a seal ring accommodated in an annular groove provided in the outer circumference of the sub piston split body (inner member) and abutting on the other of the main piston split body (outer member) to prevent a liquid from passing through a gap between the main piston split body (outer member) and the sub piston split body (inner member), in which the seal ring has a self-lubricating property and has a cylindrical surface centered on an axis on an inner peripheral surface (bottom facing surface) facing a bottom of the annular groove.
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公开(公告)号：US20240344581A1
公开(公告)日：2024-10-17
申请号：US18580456
申请日：2022-11-01
Applicant: KYB Corporation
Inventor： Yuki KUROIWA , Takao MURATA , Takeshi YASUI
CPC classification number: F16F9/19 , F16F9/3481 , F16F9/3482
Abstract: Valves of the present invention includes: a valve seat member equipped with a port and a seat portion surrounding an outlet end of the port; and an annular leaf valve whose inner periphery is immovably laid on top of the valve seat member and whose outer periphery to be seated on or spaced apart from the seat portion, wherein an external shape of the leaf valve is larger than an internal shape of a seat surface of the seat portion or larger than a virtual circle passing through an inner periphery of a seat surface of each circular arc shaped portion on the seat portion, and is smaller than an external shape of the seat surfaces or smaller than a virtual circle passing through an outer periphery of the seat surface of each circular arc shaped portion.
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公开(公告)号：US20240183423A1
公开(公告)日：2024-06-06
申请号：US18285341
申请日：2022-04-27
Applicant: KYB Corporation
Inventor： Takeshi YASUI
CPC classification number: F16F9/348 , F16F9/19 , F16K1/42 , F16F2222/12
Abstract: There is provided a valve and a shock absorber that are inexpensive and excellent in assemblability. A valve of the present embodiment includes: an annular valve body; a spacer that is stacked on the annular valve body and serves as a fulcrum of the bending of a free end of the annular valve body; and a valve stopper that faces the annular valve body in an axial direction on the spacer side of the annular valve body and regulates the bending of the annular valve body when the annular valve body bends and comes into contact therewith, wherein the valve stopper includes: a ring that has a thickness in the axial direction smaller than the thickness of the spacer, and is arranged on an inner circumference or an outer circumference of the spacer; and a stacked annular plate that is stacked on the spacer.
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