公开(公告)号：US11047400B2

公开(公告)日：2021-06-29

申请号：US16622981

申请日：2018-09-28

Applicant: KYB Corporation

Inventor： Masanari Kojima ,  Masayuki Nakamura ,  Takeshi Terao

IPC: F15B11/08 ,  E02F9/22 ,  F16K11/07 ,  B66F9/22

Abstract: A fluid pressure control device includes a switching valve, a main pilot passage and a sub pilot passage, the switching valve is configured to be switched to the open position when the working fluid is supplied to the pilot chamber, and to be switched to the throttled position with opening on the downstream side of the switching valve in the neutral passage, and the sub pilot passage is provided with a throttle portion and a check valve in parallel in the throttle portion.

公开(公告)号：US20210178712A1

公开(公告)日：2021-06-17

申请号：US16087096

申请日：2017-02-16

Applicant: KYB Corporation

Inventor： Shinraku YOSHIKAWA

IPC: B29D15/00 ,  F16H55/22 ,  F16H55/06

Abstract: The method for manufacturing the worm wheel includes a step of combining the first molds for molding the first tooth surfaces of the wheel teeth to be pushed by the shaft tooth when the worm shaft rotates in the direction and the second molds for molding the second tooth surfaces of the wheel teeth to be pushed by the shaft tooth when the worm shaft rotates in the direction to form the cavities defined by the first molds and the second molds, a step of injecting the molten resin into the cavities to mold the wheel teeth, and a step of separating the first molds and the second molds from each other in the direction oblique to the tooth traces of the wheel teeth.

公开(公告)号：US20210122409A1

公开(公告)日：2021-04-29

申请号：US16638474

申请日：2018-07-24

Applicant: KYB Corporation

Inventor： Takaya YAGYU

IPC: B62D5/04 ,  F16H1/16 ,  F16H57/021

Abstract: A power steering device includes a bearing configured to rotatably support the tip side of a worm shaft, the gear case housing the worm shaft and a holder housed in a housing hole provided in the gear case and configured to house the second bearing. The holder includes the first holder having a holding part configured to hold the outer periphery of the bearing and the opening part configured to expose a part of the outer periphery of the bearing, the second holder having a guide part configured to guide a movement of the bearing toward a worm wheel as the outer periphery of the bearing comes into contact with the guide part through the opening part and a spring configured to bias the bearing toward the worm wheel via the first holder.

公开(公告)号：US20210010558A1

公开(公告)日：2021-01-14

申请号：US16979426

申请日：2019-03-06

Applicant: KYB CORPORATION

Inventor： Hidemasa KATO ,  Ryosuke KAMAKURA

IPC: F16F9/348 ,  F16F9/19 ,  F16F9/516 ,  F16K31/06 ,  F16K15/18

Abstract: Provided is a valve device and a shock absorber that can prevent them from being in a failure state at the normal time and can freely set a passive valve even when both pressure control and passage opening/closing are performed by a solenoid valve. For this reason, the valve device includes a first passage and a second passage connected downstream of the pressure introducing passage, a solenoid valve that opens the first passage to control the upstream pressure and closes the second passage when energized, and that closes the first passage and opens the second passage when not energized, and a passive valve provided downstream of the solenoid valve in the second passage.

公开(公告)号：US20200348699A1

公开(公告)日：2020-11-05

申请号：US16755003

申请日：2019-05-15

Applicant: KYB Corporation

Inventor： Akio MATSUURA

IPC: G05D7/01 ,  F16K31/122

Abstract: In a valve device, travel control valve unit has a communication path causing the lead-out passages of the left and right travel control valve units to communicate with each other, and a spool has a lead-out side land portion configured to cause communication or shut-off of the communication between the lead-out passage and the communication path, a discharge-side land portion configured to cause communication or shut-off of the communication between the actuator passage and the discharge passage, a discharge portion configured to discharge a part of the working fluid led from the supply passage to the lead-out passage to the discharge passage at a movement initial stage of the spool, and a communication portion configured to cause the lead-out passage and the communication path to communicate with each other at a movement final stage of the spool.

公开(公告)号：US20200340360A1

公开(公告)日：2020-10-29

申请号：US16760304

申请日：2019-09-05

Applicant: KYB Corporation

Inventor： Tetsuya IWANAJI

IPC: F01B3/00 ,  F04B1/32

Abstract: A piston pump includes a first biasing mechanism configured to bias a swash plate in accordance with supplied control pressure, a second biasing mechanism configured to bias the swash plate against the first biasing mechanism, and a regulator configured to control the control pressure led to the first biasing mechanism in accordance with discharge pressure of the piston pump, wherein the second biasing mechanism has a pressure chamber to which the discharge pressure is led, and a control piston configured to be biased toward the swash plate by the discharge pressure led to the pressure chamber, and the regulator has a biasing member configured to bias the control piston toward the swash plate, and a control spool configured to be moved in accordance with biasing force of the biasing member, the control spool being configured to adjust fluid pressure.

公开(公告)号：US20200325959A1

公开(公告)日：2020-10-15

申请号：US16306368

申请日：2018-03-08

Applicant: KYB CORPORATION

Inventor： KOUSUKE SATO ,  HIROTAKA OCHIAI

IPC: F16F15/03 ,  F16F6/00

Abstract: An electromagnetic damper 100 according to an embodiment of the present invention includes a first tubular member 111, a second tubular member 121, a rod 123, a plurality of electromagnetic coils 113, permanent magnets 125, and a short circuit 130. The second tubular member 121 is mounted on the first tubular member 111 and is configured to be capable of being relatively displaced in one axis direction with respect to the first tubular member 111. The rod 123 extends in the one axis direction and is, at one end, fixed to the second tubular member 121. The plurality of electromagnetic coils 113 are disposed in either one of an inside of the first tubular member 111 or the rod 123. The permanent magnet generates induced electromotive force in the plurality of electromagnetic coils 113 by relative displacement with respect to the plurality of electromagnetic coils 113 and are disposed in the other of the inside of the first tubular member 111 or the rod 123. The short circuit 130 is connected to the plurality of electromagnetic coils 113 and shorts the terminals of the plurality of electromagnetic coils 113 to each other.

公开(公告)号：US10794404B2

公开(公告)日：2020-10-06

申请号：US16312323

申请日：2017-06-26

Applicant: KYB Corporation

Inventor： Daisuke Tanaka

IPC: F15B11/044 ,  F15B11/08 ,  F15B11/042 ,  F15B7/00 ,  F15B15/04 ,  F15B15/18

Abstract: A cylinder driving device includes: an electric motor; a pump; a main passage and a main passage; a hydraulic cylinder; an operation check valve and an operation check valve; and a restriction valve and a restriction valve configured to restrict a flow of the working oil directed to the operation check valve and an operation check valve, wherein an opening area of the restriction valve and the restriction valve is reduced in response to an increase in a flow rate of the working oil discharged from the hydraulic cylinder to the main passage and a main passage.

公开(公告)号：US20200217333A1

公开(公告)日：2020-07-09

申请号：US16649034

申请日：2018-08-14

Applicant: KYB CORPORATION

Inventor： Yoshiyuki OGAWA ,  Kousuke SATOU ,  Fumiaki OONO ,  Ryohei ARAI

IPC: F15B15/14 ,  C25D11/04

Abstract: An actuator includes a cylinder made of an aluminum alloy, a bottom part that closes one end of the cylinder, a cylindrical inner rod that is inserted in the cylinder to form an annular gap to the cylinder, a cylindrical piston rod that is closed at one end, slidably contacts with an outer periphery of the inner rod, and defines, together with the inner rod, an extension-side chamber, and a piston that is provided on the piston rod, slidably contacts with an inner periphery of the cylinder, and defines a compression-side chamber between the cylinder and the piston rod, in which the bottom part has a communication hole leading to the annular gap, and the cylinder has coating formed on the inner periphery by surface treatment using an electrolytic solution.

公开(公告)号：US20200212787A1

公开(公告)日：2020-07-02

申请号：US16620972

申请日：2018-10-22

Applicant: KYB CORPORATION

Inventor： Yoshiaki KANO ,  Kousuke SATOU ,  Shinichirou HAKAMADA ,  Daichi SHIBAHARA

IPC: H02K41/03

Abstract: To achieve the foregoing object, a tubular linear motor of the present invention includes a core that has a tubular yoke and a plurality of teeth which are annular and provided at intervals in an axial direction on an outer periphery of the yoke; a winding mounted in a slot between the teeth; and a field magnet that is tubular, into which the core is movably inserted in the axial direction, and having N poles and S poles alternately arranged in the axial direction. An axial width W of a yoke-side inner peripheral edge of the teeth is larger than an axial width of an outer peripheral edge of the teeth.