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公开(公告)号：US11879517B2
公开(公告)日：2024-01-23
申请号：US17434960
申请日：2020-02-28
Applicant: KYB CORPORATION
Inventor： Sodai Shimauchi , Koichiro Awano , Masashi Uemura
CPC classification number: F16F9/103 , F16F9/3214 , F16F9/3235 , F16F9/34 , F16F9/446 , F16K3/26
Abstract: A shock absorber includes a hard side damping element that imparts a resistance to a flow of liquid moving between an extension side chamber and a compression side chamber, a solenoid valve configured to change an aperture area of a bypass passage that bypasses the hard side damping element and communicates with the extension side chamber and the compression side chamber, a soft side damping element provided in series with the solenoid valve in the bypass passage, and a tank connected to the compression side chamber. The hard side damping element includes an orifice and leaf valves provided in parallel with the orifice. The soft side damping element includes an orifice having a larger aperture area than the orifice.
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公开(公告)号：US20230375065A1
公开(公告)日：2023-11-23
申请号：US18031526
申请日：2021-11-30
Applicant: KYB Corporation
Inventor： Yasunori KOBAYASHI , Kenshirou ANAI
CPC classification number: F16F9/19 , F16F9/36 , F16F9/3214
Abstract: A shock absorber in the present invention includes: a cylinder; a rod guide fitted to the inner circumference of an end portion of the cylinder; a piston rod movably inserted into the cylinder; a piston connected to the piston rod; and a seal member stacked on the rod guide and through which the piston rod is inserted, wherein the seal member includes: an annular seal case having an annular concave portion on the inner circumference; a seal ring including a base portion and a lip and accommodated in the annular concave portion; an annular seal holder stacked on the rod guide side of the base portion, accommodated in the annular concave portion, and supporting the outer circumference of the seal ring to suppress the diameter enlargement of the lip; and a stopper mounted on the seal case and preventing the seal holder and the seal ring from falling off.
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公开(公告)号：US11796029B2
公开(公告)日：2023-10-24
申请号：US16630890
申请日：2018-07-09
Applicant: Hitachi Automotive Systems, Ltd.
Inventor： Atsushi Maeda
IPC: F16F9/512 , F16F9/18 , F16F9/19 , F16F9/32 , F16F9/348 , F16F9/516 , B60G13/08 , B60G17/08 , F16F9/06 , F16F9/36 , F16F9/58
CPC classification number: F16F9/512 , F16F9/182 , F16F9/19 , F16F9/3214 , F16F9/3221 , F16F9/3228 , F16F9/3271 , F16F9/348 , F16F9/516 , B60G13/08 , B60G17/08 , B60G2202/24 , B60G2204/129 , B60G2206/41 , B60G2206/73 , B60G2206/80 , B60G2500/112 , B60G2800/162 , F16F9/062 , F16F9/064 , F16F9/185 , F16F9/3242 , F16F9/362 , F16F9/585 , F16F2222/12 , F16F2224/02 , F16F2224/025 , F16F2226/04 , F16F2228/04 , F16F2228/066 , F16F2230/0005 , F16F2234/02
Abstract: A shock absorber includes: a first passage through which a working fluid flows from a chamber inside a cylinder; a second passage which communicates with the chamber; a damping force generation mechanism which is provided in the first passage, a communication hole which is provided with at least a part of a passage of the second passage and is formed in a piston rod communicating with at least the chamber; a housing which has a passage of least a part of the second passage; a free piston which is movably provided inside the housing and defines the second passage into an upstream side and a downstream side of a flow of the working fluid when the piston moves in one direction, and an elastic body which is provided between the free piston and the housing. The free piston is formed of a resin material.
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公开(公告)号：US10054185B2
公开(公告)日：2018-08-21
申请号：US15056940
申请日：2016-02-29
Applicant: Fox Factory, Inc.
Inventor： Christopher Paul Cox
CPC classification number: F16F9/48 , B60G13/08 , B60G17/08 , B60G2202/24 , B60G2206/41 , B60G2500/112 , B60G2500/114 , F16F9/18 , F16F9/19 , F16F9/3214 , F16F9/3242 , F16F9/49
Abstract: Methods and apparatus for position sensitive dampening. In one aspect a fluid damper is provided comprising a damper chamber divided by a piston into a primary compression and a primary rebound chamber; a secondary compression chamber in fluid communication with the damper chamber; and an adjustable fluid meter controlling fluid flow out of the secondary compression chamber.
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公开(公告)号：US20180163810A1
公开(公告)日：2018-06-14
申请号：US15738251
申请日：2015-07-22
Applicant: KYB Corporation
Inventor： Takahiro KIYONAGA , Shotaro ASAOKA
CPC classification number: F16F9/3214 , F16F9/3228 , F16F9/3481 , F16F9/3482 , F16F9/5126 , F16F9/5165 , F16K15/148
Abstract: A piston includes a plurality of ports formed along a circumferential direction of the piston, the ports penetrating in an axial direction of the piston, and a plurality of seat surfaces, on which a disc valve is seated, formed to surround an opening of each port on one end surface of the piston, the disc valve being configured to open and close the ports, wherein each port is defined by an arc-shaped inner peripheral surface, an arc-shaped outer peripheral surface that is longer in a circumferential direction than the inner peripheral surface, and two side surfaces that connect the inner peripheral surface and the outer peripheral surface, and at least two protrusions are provided to the outer peripheral surface of each port, the protrusions protruding toward the inside of the port and extending in the axial direction up to the seat surface.
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Patent Agency Ranking
公开(公告)号：US20180038443A1
公开(公告)日：2018-02-08
申请号：US15623859
申请日：2017-06-15
Applicant: BeijingWest Industries Co., Ltd.
Inventor： Andrew Kegan Proeschel , Guy Tessier
CPC classification number: F16F9/512 , B60G17/08 , F16F9/3214 , F16F9/3405 , F16F9/3415 , F16F9/535 , F16J1/08 , F16J1/09
Abstract: A hydraulic damper assembly including a housing that extends about and along an axis and defines an interior wall and a chamber for holding a fluid. A piston assembly is disposed in the chamber and axially moveable therein. The piston assembly includes a core. A wear band is disposed about the core and has an inside surface and an outside surface. The inside surface of the wear band defines at least one groove in fluid communication with the chamber for allowing the fluid to bias the wear band toward the interior wall of the housing during the passage of the fluid though the at least one groove during movement of the piston assembly.
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公开(公告)号：US09850975B2
公开(公告)日：2017-12-26
申请号：US15105989
申请日：2014-12-17
Applicant: NIFCO INC.
Inventor： Shigemitsu Tomita
CPC classification number: F16F9/0218 , F16F7/09 , F16F7/095 , F16F9/3214 , F16F9/3235 , F16F9/368
Abstract: A damper includes a piston provided with a rod, and a housing storing the piston, and generates a braking force by an operation of the piston. The piston is provided with a seal member relative to an inner wall of the housing; and a slider provided slidably relative to the piston, and contacting the inner wall of the housing with a predetermined frictional force. When the braking force is generated, the slider presses against the seal member, and a portion contacting the inner wall of the housing in the seal member deforms outwardly toward the housing.
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公开(公告)号：US20170328438A1
公开(公告)日：2017-11-16
申请号：US15487370
申请日：2017-04-13
Applicant: BeijingWest Industries Co., Ltd.
Inventor： Miroslaw Pawel Osika , Karol Jakub Pilawski , Jakub Pawel Schab
CPC classification number: F16F9/48 , B60G13/08 , B60G15/06 , B60G15/061 , B60G17/08 , B60G2202/24 , B60G2206/41 , B60G2500/10 , B60G2800/162 , F16F9/185 , F16F9/3214 , F16F9/3235 , F16F9/49 , F16F13/007 , F16F13/06 , F16F2222/12 , F16F2224/02 , F16F2228/066
Abstract: A hydraulic damper including a tube defining a chamber. The tube has a main section and a narrowed section. A main piston assembly is disposed in the main section and connected to a piston rod. A resisting mechanism is fixed to the piston rod. A secondary piston is moveable into the narrowed section. An inner surface of the secondary piston defines at least one radially internal channel. The piston rod defines an annular recess. The secondary piston includes a locking mechanism axially slideable within the annular recess. The secondary piston is axially moveable between a hydraulic stop engagement stroke wherein the secondary piston engages the resisting mechanism and restricts the flow of fluid through the radially internal channel, and a hydraulic stop disengagement stroke wherein the secondary piston is spaced from the resisting mechanism and allows the flow of fluid through radially internal channel.
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公开(公告)号：US20170254380A1
公开(公告)日：2017-09-07
申请号：US15596454
申请日：2017-05-16
Applicant: MICHAEL A. ANKNEY
Inventor： MICHAEL A. ANKNEY
CPC classification number: F16F9/3214 , B60G13/08 , B60G17/08 , B60G2202/24 , B60G2206/41 , B60G2300/20 , B60G2500/112 , B60G2600/21 , B60Y2200/81 , F16F9/3271 , F16F9/348 , F16F9/3481 , F16F9/368 , F16F9/512 , F16F9/516
Abstract: An apparatus and method for a piston head assembly for an R/C car shock absorber provides for differing flow rates through the piston depending on whether the piston is presently in rebound or compression movement. A piston head may be constructed with a plurality of separate recesses further having at least first and second one way valve holes and a plurality of two way valve holes surrounding the central recess. In one embodiment, two sealing members fit within two separate recesses whereby the sealing member keeps the first and second one way valve holes generally closed. When fluid flow contacts the sealing member during the rebound stroke, fluid flows through the first and second one way valve holes moves the seal member to the open position thereby providing more fluid flow and a quicker rebound damping response.
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公开(公告)号：US20170009839A1
公开(公告)日：2017-01-12
申请号：US15114147
申请日：2014-12-17
Applicant: ZF Friedrichshafen AG
Inventor： Helmut BAALMANN , Hassan ASADI , Hans GONSCHORREK , Lothar KRILL , Alexander KRUSE , Oswald LICHTLEIN , Dirk LITTERSCHEID , Thomas MANGER , Harun TUCOVIC , Heinz SYDEKUM
CPC classification number: F16F9/3485 , F16F9/3214 , F16F9/3488 , F16F2226/04 , F16F2230/0082
Abstract: A vibration damper includes a piston rod (2) which transitions into a piston rod neck (4) while forming a contact shoulder (6) and guides a piston valve (1) at this piston rod neck (4), this piston valve (1) is pretensioned against the contact shoulder (6) of the piston rod (2). To reduce variances in damping force in batch fabrication of the vibration damper, a compensating disk (20) is fitted axially between the contact shoulder (6) and the piston valve (1), which compensating disk (20) is produced from a material with a lower yield strength compared to the piston rod (2) and/or compared to an immediately succeeding component of the piston valve (1).
Abstract translation: 振动阻尼器包括活塞杆（2），该活塞杆（2）在形成接触肩部（6）的同时转入活塞杆颈部（4）并且在该活塞杆颈部（4）处引导活塞阀（1），该活塞阀 ）预紧力抵靠活塞杆（2）的接触肩部（6）。 为了减少批量制造振动阻尼器的阻尼力的变化，补偿盘（20）轴向安装在接触台肩（6）和活塞阀（1）之间，补偿盘（20）由具有 与活塞杆（2）相比和/或与活塞阀（1）的紧随其后的部件相比较的屈服强度较低。
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