Kawasaki, Japan
Kawasaki, Japan

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Patent
KYB Corporation | Date: 2017-05-03

A damper control device (1) feeds back a pressure within an extension-side chamber (R1) to control an extension-side solenoid valve (S1) that adjusts the pressure within the extension-side chamber (R1), and feeds back a pressure within a compression-side chamber (R2) to control a compression-side solenoid valve (S2) that adjusts the pressure within the compression-side chamber (R2). The damper control device (1) performs a compression-side reduction correction which reduces a compression-side current (Ic) supplied to the compression-side solenoid valve (S2) during extension of a damper (100), and performs an extension-side reduction correction which reduces an extension-side current (Ie) supplied to the extension-side solenoid valve (S1) during contraction of the damper (100).


Patent
KYB Corporation | Date: 2017-05-17

A hydraulic rotary machine (100) includes a plurality of pistons (6), a cylinder block (2) accommodating the pistons (6), a shaft (1) penetrating through the cylinder block (2), a swash plate (11) making the pistons (6) reciprocate to expand and contract a capacity chamber of the cylinder (2b), a casing (3) accommodating the cylinder block (2), a front cover (4) closing an opened end of the casing (3), an extending portion (4b) formed in the front cover (4) and extending along the shaft (1) towards the cylinder block (2), and a first slide bearing (20) provided between the extending portion (4b) and the cylinder block (2). The first slide bearing (20) is fixed to the extending portion (4b) or the cylinder block (2) by a pin member (21).


Patent
KYB Corporation | Date: 2017-05-17

A hydraulic drive system includes: a first hydraulic motor (12) and a second hydraulic motor (22) configured to be driven by working oils respectively discharged from a first hydraulic pump (11) and a second hydraulic pump (21) to transmit powers to different drive wheels of right and left drive wheels (2, 3); a first pump control unit (13) and a second pump control unit (23) configured to control discharge volumes and discharge directions of the first hydraulic pump (11) and the second hydraulic pump (21); a signal pressure generating unit (40) configured to generate a signal pressure for adjusting command pressures to control the first pump control unit (13) and the second pump control unit (23) in accordance with the sum of discharge pressures of the first hydraulic pump (11) and the second hydraulic pump (21); and a first pressure adjusting unit (50) and a second pressure adjusting unit (60) configured to adjust the command pressures in accordance with the signal pressure.


Patent
KYB Corporation | Date: 2017-05-17

A hydraulic piston pump motor (100) in which water is used as a working fluid includes an axial directional passage (15) opened on an end surface of one end (1a) of a shaft (1) that couples to a cylinder block (2) and drilled open along a shaft center of the shaft (1); a first radial directional passage (16) drilled open along a radial direction of the shaft (1) from the axial directional passage (15) and configured to guide working fluid into a casing (3); a second radial directional passage (17) drilled open from the axial directional passage (15) along the radial direction of the shaft (1) at a position closer to the one end (1a) of the shaft (1) than the first radial directional passage (16); and an introduction passage (13) communicating a passage, through which the higher pressure working fluid flows, among the supply passage (10) and the discharge passage (11) with the axial directional passage (15).


Patent
KYB Corporation | Date: 2017-05-17

A mixer drum (10) apparatus to stir material to be stored includes a freely-rotatable drum (10) having an opening end (11) opened at one end to receive the material to be stored therein, a plurality of spirally-shaped blades (20, 30) provided inside the drum (10) to have a phase difference, and an inlet seal (40) provided at the opening end (11) of the drum (10) and connected partially to the blades (20, 30). The inlet seal (40) located between the blades (20, 30) forms an opening causing the material to be stored to pass through.


Patent
KYB Corporation | Date: 2017-05-24

The torque sensor (100) includes a detection unit (50) for detecting the magnetic transition through a through hole (73) formed so as to penetrate a radial-side surface of the housing (7); a housing chamber (72) formed to be raised outward in a radial direction from an outer circumferential surface of the housing (7) so that the through hole (73) opens into the housing chamber accommodating the detection unit (50); a communication hole (74) provided so as to extend in the tangential direction with respect to an outer circumference of the housing (7), the communication hole (74) making an outside of the housing (7) and an inside of the housing chamber (72) communicate with each other; and an output terminal (81) fitted into the communication hole (74) and connected to the detection unit (50) in a tilting state, the output terminal being configured to output a signal to the outside on the basis of a detected signal.


Patent
KYB Corporation | Date: 2017-05-24

A shock absorber (S) includes an expansion-side passage (2A) and a contraction-side passage (2B) provided in a valve disk (1) to allow two chambers (L1 and L2) to communicate with each other and arranged alternately side by side along a circumferential direction, seats (3A and 3B) provided to surround an outlet port (12) of the expansion-side passage (2A) or an outlet port (15) of the contraction-side passage (2B), and valve bodies (4A and 4B). The seats (3A and 3B) has an arc-shaped outer seat portion (30), middle seat portions (31) extending from respective both ends in a circumferential direction of the outer seat portion (30) toward a center axis (X) side of the piston (1), and an inner seat portion (32) extending from center axis (X) side ends of the middle seat portions (31) oppositely to the outer seat portion side in a circumferential direction to connect the neighboring middle seat portions (31). The inner seat portion (32) is placed on a straight line (Y) that connects the center axis (X) side ends of the middle seat portions (31).


Patent
KYB Corporation | Date: 2016-11-23

A power steering device (100) includes a worm shaft (2) configured to rotate as an electric motor (7) is driven; a worm wheel (1) meshed with the worm shaft (2), the worm wheel (1) being configured to transmit a rotational force of the electric motor (7) to a rack shaft configured to turn wheels; a bearing that rotatably supports a tip side of the worm shaft (2); a gear case (3) that houses the worm shaft (2); a biasing member configured to bias the worm shaft toward the worm wheel via the bearing; and a holder (30) including a housing hole configured to house the bearing movably in a biasing direction of the biasing member. The holder (30) includes a plurality of bulging parts (33e) formed to bulge radially outwardly, the bulging parts being configured to come into contact with an inner peripheral surface of the gear case (3).


Patent
KYB Corporation | Date: 2016-10-05

A fluid pressure cylinder includes the piston rod having a first tapered portion formed on an outer circumference of the piston rod so as to be inclined with respect to a center axis; a cushion bearing that is provided around the outer circumference of the piston rod; a bearing receiving portion that allows insertion of the cushion bearing; and a cushion passage that is formed between the cushion bearing and the bearing receiving portion when the cushion bearing is inserted into inside of the bearing receiving portion at the vicinity of the stroke end and that imparts resistance to flow of working fluid passing through the cushion passage. The cushion bearing has a contacting portion capable of coming into contacting with the first tapered portion, and the contacting portion is positioned with respect to the piston rod by being brought into contact with the first tapered portion.


Patent
Kyb Corporation and Fuji Heavy Industries | Date: 2016-04-20

An electric power steering device includes a basic return command value calculation unit configured to calculate a basic return command value in a direction returning the steering wheel to a neutral position, on the basis of detection results of a steering angle detector detecting a steering angle of the steering wheel, a first correction gain calculation unit configured to calculate a first correction gain correcting the basic return command value, on the basis of detection results of a vehicle speed detector detecting vehicle speed, and a second correction gain calculation unit configured to calculate a second correction gain correcting the basic return command value, on the basis of a change amount of the steering torque detected by the torque sensor. The basic return command value is corrected by the first and second correction gains so as to calculate a return command value. The return command value is added to the assist command value so as to drive the electric motor.

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