公开(公告)号：US20240167972A1

公开(公告)日：2024-05-23

申请号：US18283142

申请日：2022-03-11

Applicant: KYB CORPORATION

Inventor： Takahiro Yoshida ,  Yukinori Kameda ,  Yuki Nagai ,  Ryohei Nakamura

IPC: G01N27/02 ,  G01N27/06 ,  G01N27/22 ,  G01N33/28

CPC classification number: G01N27/028 ,  G01N27/06 ,  G01N27/228 ,  G01N33/28

Abstract: A fluid state detection sensor accurately detects a fluid state by suppressing the deterioration of a conductivity measurement accuracy due to its characteristics. The sensor includes an electrode section configured by a pair of electrodes arranged opposite each other, a conductivity acquisition unit detecting a resistance value from an inter-electrode voltage value acquired through the electrode section and acquiring a fluid conductivity, a controller executing entire sensor's processing according to a control program stored in ROM etc., a memory storing correction values for fluid whose conductivity is greater than a predetermined value calculated by a conductivity calculator, which calculates the fluid conductivity from the inter-electrode voltage value, a corrector correcting the conductivity calculator calculated conductivity using the correction value stored in the memory when the fluid whose conductivity calculator calculated conductivity is greater than the predetermined value, and an output section outputting corrected conductivity.

公开(公告)号：US11959538B2

公开(公告)日：2024-04-16

申请号：US17758680

申请日：2020-12-16

Applicant: KYB Corporation

Inventor： Shogo Ogura

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

CPC classification number: F16H55/06 ,  B29D15/00 ,  F16H55/22 ,  F16H2055/065

Abstract: A gear manufacturing method, the gear including an annular gear portion including teeth on an outer periphery, an annular support portion provided on an inner peripheral surface of the gear portion and supporting the gear portion, and a core portion provided inside the support portion, the method includes: a support portion molding step of molding the support portion by disposing the gear portion and the core portion in an annular mold and filling a resin between the gear portion and the core portion; and a support portion cooling step of cooling the support portion molded in the support portion molding step, a radial gap between the teeth of the gear portion and the mold before the support portion molding step is set to be smaller than a radial shrinkage amount of the support portion in the support portion cooling step.

公开(公告)号：US11919350B2

公开(公告)日：2024-03-05

申请号：US17311549

申请日：2019-12-04

Applicant: KYB Corporation

Inventor： Kenta Kurihara

IPC: B60G15/06 ,  B60G11/16 ,  F16F1/12 ,  F16F9/54 ,  F16F9/58

CPC classification number: B60G15/063 ,  B60G11/16 ,  F16F1/126 ,  F16F9/54 ,  F16F9/58 ,  B60G2204/12422

Abstract: A spring guide includes: a base portion configured to support a coil spring; and an opening portion provided so as to penetrate through the base portion, the opening portion being configured such that a shock absorber is inserted into the opening portion, the opening portion is provided with: protruded portions protruding out from an inner circumferential surface of the opening portion, the protruded portions being configured to support the shock absorber; and a recessed portion recessed in the inner circumferential surface of the opening portion, a plurality of the protruded portions are arranged along a circumferential direction of the opening portion, and a gate trace of an injection mold is formed in the recessed portion.

公开(公告)号：US20240060923A1

公开(公告)日：2024-02-22

申请号：US18259502

申请日：2021-12-20

Applicant: KYB Corporation

Inventor： Yuki NAGAI ,  Yukinori KAMEDA ,  Takahiro YOSHIDA ,  Ryohei NAKAMURA

IPC: G01N27/07

CPC classification number: G01N27/07

Abstract: A liquid state detection sensor includes: an electrode part, the electrode part having a pair of electrodes provided so as to be opposed to each other; a voltage value acquisition time period setting unit configured to set a voltage value acquisition time period, the voltage value acquisition time period being a length of a time period during which an inter-electrode voltage value of the pair of electrodes of the electrode part is acquired; a voltage value acquisition unit configured to acquire the inter-electrode voltage value in the voltage value acquisition time period; and an electrical conductivity calculation unit configured to calculate an electrical conductivity of the liquid on the basis of, among the inter-electrode voltage value acquired by the voltage value acquisition unit, the inter-electrode voltage value acquired after a predetermined time period has elapsed since a start of the voltage value acquisition time period.

公开(公告)号：US20240044390A1

公开(公告)日：2024-02-08

申请号：US18269217

申请日：2022-01-07

Applicant: KYB Corporation

Inventor： Yoshifumi KOBAYASHI

IPC: F16F9/348 ,  F16F9/18 ,  F16K15/14

CPC classification number: F16F9/348 ,  F16F9/185 ,  F16K15/148 ,  F16F2222/12 ,  F16F2234/02 ,  F16F2232/08

Abstract: A valve of the present invention includes: a valve seat member that has a port, an annular window which communicates with an outlet end of the port, an inner-circumferential valve seat provided on an inner-circumferential side of the annular window, and an outer-circumferential valve seat of the annular window; a first valve body that are stacked on a valve seat member, that can seat on or come off the outer-circumferential valve seat to open or close the annular window, and that has a hole; a second valve body that is contained in the annular window so as to be movable in an axial direction and that closes the hole when abutting on a valve seat member side surface of the first valve body; a second valve body biasing member that is contained in the annular window and that biases the second valve body toward the first valve body; a regulating portion that restricts a movement of the second valve body in a direction in which the second valve body moves away from the first valve body; and a communication passage that secures communication between the hole and the port even when the second valve body abuts on the regulating portion.

公开(公告)号：US11879452B2

公开(公告)日：2024-01-23

申请号：US17439186

申请日：2020-02-13

Applicant: KYB Corporation

Inventor： Tetsuya Iwanaji ,  Hiroaki Kuboi ,  Rintaro Matsuda

IPC: F04B49/12 ,  F04B49/00 ,  F04B1/122 ,  F04B49/08 ,  F04B49/22

CPC classification number: F04B49/12 ,  F04B1/122 ,  F04B49/002 ,  F04B49/08 ,  F04B49/22

Abstract: A pump displacement control device includes: a servo piston that changes a tilt angle; a flow rate control spool that is displaced corresponding to an input pressure; a power control spool that is displaced corresponding to a discharge pressure of the pump; a control pressure regulating spool that regulates a control pressure which controls the servo piston; and a feedback lever connected to the servo piston and the control pressure regulating spool. The feedback lever directly abut on either one of the flow rate control spool or the power control spool for regulating the control pressure.

公开(公告)号：US11878740B2

公开(公告)日：2024-01-23

申请号：US17603898

申请日：2020-04-02

Applicant: MAZDA MOTOR CORPORATION ,  KYB CORPORATION ,  OILES CORPORATION

Inventor： Gaku Ikeyama ,  Kazuya Sato ,  Junya Kuwagaki ,  Yoshimitsu Fumimoto ,  Masaki Takahashi ,  Tomonori Taniguchi ,  Takuzo Ito ,  Mitsuhiko Fujikake ,  Hiroki Masuda ,  Hiroyuki Kikuchi ,  Jun Ouchi ,  Kazuhiko Akeda

IPC: B62D3/00 ,  B62D3/12 ,  F16C29/02 ,  F16C35/02

CPC classification number: B62D3/123 ,  F16C29/02 ,  F16C35/02

Abstract: A clearance is created between an inner circumference of a bushing main body (2) which surrounds a rack (5) across a row of rack gear teeth (50) and an outer circumference of the rack (5), and two supporting surfaces (21A, 21B) which face each other with a bushing main body axis O therebetween and a supporting surface (21C) which faces a back surface of the rack (5), each extending along an x-axis direction, are formed on the inner circumference of the bushing main body (2). The rack (5) in a neutral state is supported by the two supporting surfaces (21A, 21B) so as to be displaceable along a z-axis direction, and the rack (5) in operation is stably supported by the three supporting surfaces (21A-21C) at three places. A groove bottom position of an annular elastic member attachment groove (24), which is formed on an outer circumference of the bushing main body (2), is offset toward the support surface (21B) only in an area on a support surface (21B) side from the bushing main body axis O, and therefore an elastic ring (3) attached to the elastic member attachment groove (24), protrudes above an outer circumferential surface of the bushing main body (2), but only in the area on the support surface (21B) side from the bushing main body axis O.

公开(公告)号：US11846366B2

公开(公告)日：2023-12-19

申请号：US17626720

申请日：2020-09-02

Applicant: KYB CORPORATION

Inventor： Yoshifumi Kobayashi ,  Tomoyasu Abe ,  Yuusuke Furuta ,  Naoaki Danshita ,  Kohei Doi ,  Masatoshi Iyatani

IPC: F16K31/06 ,  F16F9/19 ,  F16F9/46

CPC classification number: F16K31/0675 ,  F16F9/19 ,  F16F9/461 ,  F16K31/0651

Abstract: A solenoid includes a first fixed iron core and a second fixed iron core located on a first end side and a second end side of an axial direction of a coil, a first movable iron core and a second movable iron core located therebetween and attracted by the first fixed iron core and the second fixed iron core by passage of current through the coil, respectively, a spring that biases the first movable iron core to the second fixed iron core side, and a leaf spring that regulates movement of the first movable iron core to the second fixed iron core side with respect to the second movable iron core. The movement of the first movable iron core in a direction orthogonal to the axial direction of the coil with respect to the first fixed iron core and the second fixed iron core is regulated.

公开(公告)号：US11767832B2

公开(公告)日：2023-09-26

申请号：US17999488

申请日：2021-03-11

Applicant: KYB Corporation

Inventor： Gen Takei ,  Tetsuya Iwanaji ,  Hiroaki Kuboi

IPC: F04B1/2078 ,  F04B1/32 ,  F04B1/306

CPC classification number: F04B1/2078 ,  F04B1/306 ,  F04B1/32

Abstract: A piston pump includes: a tilting mechanism configured to bias a swash plate in accordance with a control pressure; a support spring configured to support the swash plate; and a regulator configured to control a control pressure guided to the tilting mechanism in accordance with a 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; and a control spool configured to be moved in accordance with a biasing force from the outer spring and the inner spring, the control spool being configured to regulate the control pressure, and the outer spring and the inner spring and the support spring are provided adjacent to each other and in parallel with respect to the swash plate.

公开(公告)号：US20230296156A1

公开(公告)日：2023-09-21

申请号：US18018183

申请日：2021-08-17

Applicant: KYB Corporation

Inventor： Tomoyasu ABE ,  Yoshifumi KOBAYASHI ,  Toshihiro MORI

IPC: F16F9/348 ,  F16K17/04

CPC classification number: F16F9/3485 ,  F16K17/04

Abstract: A damping valve includes: a disk with a port and a valve seat surrounding the port; a leaf valve that opens and closes the port by causing the front side to sit on and leave the valve seat; a tubular housing provided on the back side of the leaf valve; an annular spool that abuts on the back of the leaf valve and is slidably inserted into the inner circumference of the housing to form a back pressure chamber that causes back pressure to act on the leaf valve inwardly together with the housing; an annular spring support portion that is located on the back side of the leaf valve, faces the inside of the back pressure chamber, and has a smaller outer diameter than an inner diameter of the spool; and an annular leaf spring that is interposed between one end of the spool that is an opposite side end of the leaf valve and the spring support portion and presses the spool in a direction of abutting on the leaf valve.