公开(公告)号：US11959482B2

公开(公告)日：2024-04-16

申请号：US17600566

申请日：2020-03-16

Applicant: KYB Corporation

Inventor： Masamichi Sugihara

IPC: F04C14/26 ,  F01C21/08 ,  F01C21/10 ,  F04C2/344 ,  F04C2/356 ,  F04C15/06

CPC classification number: F04C2/3448 ,  F04C2240/20 ,  F04C2240/30

Abstract: A vane pump includes: pump chambers formed by a rotor, a cam ring, and vanes; a first suction port that guides working fluid guided by a suction passage to the pump chambers; a second suction port that guides the working fluid guided from the suction passage through a communication passage to the pump chambers; and a return passage to which excessive fluid of the working fluid discharged from the pump chambers is guided. The return passage has: a body-internal passage through which the excessive fluid flows along an axis direction at an outer side of the cam ring in a radial direction; and a turning passage that reverses the excessive fluid guided through the body-internal passage towards the second suction port.

公开(公告)号：US11932823B2

公开(公告)日：2024-03-19

申请号：US17601828

申请日：2020-04-10

Applicant: KYB Corporation

Inventor： Shinji Kato

IPC: C10M137/10 ,  C07F9/165 ,  C10M169/04 ,  F16F9/32 ,  C10N40/08

CPC classification number: C10M137/10 ,  C07F9/1658 ,  C10M169/04 ,  F16F9/3278 ,  B60G2202/24 ,  B60G2206/70 ,  C10M2203/003 ,  C10M2223/045 ,  C10N2040/08 ,  F16F2222/12 ,  F16F2224/04 ,  F16F2230/04

Abstract: To provide a lubricant composition for shock absorbers, a friction adjusting additive for a lubricant for shock absorbers, and a lubricant additive, each capable of satisfying both operational stability and ride comfort and improving the ride comfort further. The lubricant composition for shock absorbers contains a base oil and a friction adjusting agent and the friction adjusting agent contains a first zinc dithiophosphate represented by the following formula 1:




[in the formula 1, R11 to R14 are alkyl groups in which one or more and three or less is/are a primary alkyl group and the other(s) is/are a secondary alkyl group].

公开(公告)号：US20240052908A1

公开(公告)日：2024-02-15

申请号：US18265809

申请日：2021-12-10

Applicant: KYB Corporation

Inventor： Takahisa MOCHIZUKI ,  Takuhiro KONDO

IPC: F16F9/34

CPC classification number: F16F9/3405

Abstract: A shock absorber according to the present invention includes: a cylinder, a rod movably inserted into the cylinder, and a partition member having a disk shape and inserted into the cylinder to partition an inside of the cylinder into two working chambers, in which the partition member includes a plurality of ports that communicates the working chambers with each other, and a choke passage having a portion communicating the working chambers with each other and passing through an inner peripheral side or an outer peripheral side of each port along a circumferential direction.

公开(公告)号：US20230406443A1

公开(公告)日：2023-12-21

申请号：US18265149

申请日：2021-12-10

Applicant: KYB Motorcycle Suspension Co.,Ltd. ,  KYB Corporation

Inventor： Hidetoshi SUGAWARA ,  Naoki ITO ,  Takumi HAYASHIGUCHI ,  Hirokatsu MAEDA

IPC: B62K25/08 ,  F16F13/00

CPC classification number: B62K25/08 ,  F16F13/007 ,  F16F2222/12 ,  F16F2228/066 ,  F16F2230/30 ,  F16F2230/0052 ,  F16F2232/08 ,  F16F2234/02

Abstract: A front fork (1) of the present invention includes: a fork main body (2) having a vehicle body side tube (3) and an axle side tube (4); a cap (5) placed in the vehicle body side tube (3); a cylinder (6) provided inside the axle side tube (4); a rod (7) inserted into the cylinder (6) so as to be movable in an axial direction; an electric device (6) mounted inside the cylinder (6); an electric wire (9) connected to the electric device (8); a suspension spring (10) biasing the fork main body (2) in an extending direction, and an adjuster (11) capable of adjusting a support position of a spring seat (12). The electric wire (9) is drawn from the cap (5) at a position misaligned from an axial center line of the fork main body (2) to an outside of the fork main body (2). An operational portion (17) of the adjuster (11) is provided in the cap (5) at a position misaligned from the axial center line (A).

公开(公告)号：US20230246519A1

公开(公告)日：2023-08-03

申请号：US18002727

申请日：2021-06-18

Applicant: KYB Corporation

Inventor： Kenji SUZUKI ,  Keita MATSUZAKA ,  Jun SUZUKI

IPC: H02K7/116 ,  F16H1/46 ,  F16D1/02

CPC classification number: H02K7/116 ,  F16H1/46 ,  F16D1/02

Abstract: In a transmission-equipped motor, a spline portion is formed at an end portion of a drive shaft of a transmission, and a spline hole with which the spline portion is engaged is formed on an end surface of a motor shaft of a hydraulic motor. A snap ring which contacts an end surface of the motor shaft having the spline hole is provided on an outer periphery of the drive shaft having the spline portion so that the snap ring positions the motor shaft and the drive shaft.

公开(公告)号：US20230193930A1

公开(公告)日：2023-06-22

申请号：US17996274

申请日：2021-04-06

Applicant: KYB Corporation

Inventor： Tomokazu NAKANO ,  Daisuke TANAKA ,  Yuuzou MASUTA

IPC: F15B11/10 ,  F15B13/00 ,  F15B15/14 ,  F04B17/03

CPC classification number: F15B11/10 ,  F15B13/00 ,  F15B15/14 ,  F04B17/03

Abstract: An electric fluid pressure cylinder is provided with: a driving unit integrally provided with an electric motor, a pump configured to discharge working oil by being driven by the electric motor, and a tank; a hydraulic cylinder configured to be extended and contracted by the working oil supplied from the driving unit; and a first hose pipe and a second hose pipe configured to guide the working oil between the driving unit and the hydraulic cylinder. The driving unit is further provided with: a valve block configured to control the flow of working fluid between the fluid pressure cylinder and the pump; and a connecting plate attached to the valve block and formed with a connecting port to which the pipe member is connected, the connecting port being configured such that the working fluid supplied to and discharged from the fluid pressure cylinder passes through the connecting port.

公开(公告)号：US11655875B2

公开(公告)日：2023-05-23

申请号：US16968074

申请日：2019-02-12

Applicant: KYB Corporation

Inventor： Yoshifumi Kobayashi ,  Tomoyasu Abe ,  Yuusuke Furuta

IPC: F16F9/34 ,  F16F9/18 ,  B60G13/08 ,  B60G17/08 ,  F16F9/348 ,  F16F9/516 ,  F16K15/14 ,  F16K27/02

CPC classification number: F16F9/348 ,  F16F9/185 ,  F16F9/3488 ,  F16F9/516 ,  F16K15/148 ,  F16K27/0209 ,  B60G13/08 ,  B60G17/08 ,  B60G2202/24 ,  B60G2206/41 ,  B60G2500/11 ,  B60G2600/21 ,  B60G2800/162 ,  F16F9/187 ,  F16F2222/12 ,  F16F2228/066 ,  F16F2232/08 ,  F16F2234/02

Abstract: A damping valve includes a valve seat member, a first valve element stacked on the valve seat member, a second valve element provided between an inner circumference valve seat of the valve seat member and the first valve element, the second valve element being configured to open and close a hole of the first valve element, and a biasing member configured to bias the first valve element towards the second valve element, wherein a surface of the second valve element on an opposite side from the valve seat member is higher than the outer circumference valve seat of the valve seat member.

公开(公告)号：US11644031B2

公开(公告)日：2023-05-09

申请号：US17283668

申请日：2019-10-29

Applicant: KYB Corporation

Inventor： Yusuke Ohmori ,  Tomoyuki Nakagawa ,  Masamichi Sugihara ,  Atsumi Takahashi ,  Satoshi Watanabe

IPC: F04C2/344 ,  F04C14/04 ,  F01C21/10 ,  F04C15/06

CPC classification number: F04C2/3446 ,  F01C21/108 ,  F04C14/04 ,  F04C15/06 ,  F04C2240/30 ,  F04C2250/102

Abstract: A vane pump includes: a rotor; vanes freely slidably received in the rotor; a cam ring having a cam face with which the vanes come into sliding contact; a side member having a sliding contact surface with which side surfaces of the rotor and the vanes come into sliding contact; pump chambers; and a discharge port configured to guide working fluid discharged from the pump chambers. The side member has a guide surface that is provided on an end portion side of the opening portion, the guide surface being configured to push the end portions of the vanes upward and guide them toward the sliding contact surface of the side member as the rotor is rotated in the reverse rotation direction.

公开(公告)号：US20230122543A1

公开(公告)日：2023-04-20

申请号：US17906233

申请日：2021-03-11

Applicant: KYB Corporation

Inventor： Hiroaki KUBOI ,  Tetsuya IWANAJI

IPC: F04B1/324 ,  F04B1/2078

Abstract: A piston pump includes: a first biasing mechanism configured to bias a swash plate in accordance with control pressure supplied; a second biasing mechanism configured to bias the swash plate against the first biasing mechanism; and a regulator configured to control the control pressure in accordance with self-pressure of the piston pump. The regulator has: an outer spring and an inner spring configured to be extended and compressed by following tilting of the swash plate; a control spool configured to be moved in accordance with biasing forces exerted by the outer spring and the inner spring, the control spool being configured to adjust the control pressure; an auxiliary spring configured to exert biasing force to the control spool against the biasing forces exerted by the outer spring and the inner spring; and an adjusting mechanism configured to adjust the biasing force exerted by the auxiliary spring.

公开(公告)号：US20230067151A1

公开(公告)日：2023-03-02

申请号：US17760351

申请日：2021-01-27

Applicant: KYB Corporation

Inventor： Kenta KURIHARA

IPC: B60G15/06

Abstract: A spring guide includes: a main body portion of which a coil spring is placed on a vehicle side, the main body portion being formed of a resin material; and a covering portion that covers an anti-spring side of the main body portion opposite to the coil spring. The covering portion is formed of a material having a physical property different from that of the resin material forming the main body portion.