KYB corporation

Kawasaki, Japan

KYB corporation

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: 2017-06-28

A parking brake unit (101) of a brake device (100) for braking a wheel (1) by supply of hydraulic fluid includes a first piston (110) formed in a cylindrical shape, the first piston (110) having a first engaging part (113) on an inner circumference thereof, the first piston (110) being configured to move in first direction by pressure of the hydraulic fluid supplied to a pressure chamber (105) defined in the back thereof, a first biasing member (118) configured to bias the first piston (110) in second direction, opposite to the first direction, a second piston (120) slidably provided on the inner circumference of the first piston (110), the second piston (120) having a second engaging part (123) on an outer circumference thereof, and an engaging member (130) configured to cause the first engaging part (113) and the second engaging part (123) to engage with each other, in which the second piston (120) causes a brake lining (2) to move in direction bringing the wheel (1) to be in a braking state, when the first piston (110) moves in the second direction.


Patent
KYB Corporation | Date: 2017-07-19

A signal level detection device 1 and a signal level detection method according to a means for solving a problem of the present invention varies a cut-off frequency c of a variable low-pass filter 3 which filters a signal level r. The cut-off frequency c is varied based on the signal level r or information referred to for estimating the signal level. The signal level detection device 1 and the signal level detection method therefore reduce a delay of a rise of the obtained signal level r from an actual signal level, and sufficiently remove noise superimposed on the signal level r even when the signal level r is extremely low. Accordingly, control performance improves regardless of a degree of the signal level r.


The invention relates to a strut rod made of a composite material for the front end suspension of a vehicle, comprising an upper part coupled to a rod and piston assembly secured to the body of the vehicle, and a lower part in the form of a double-flanged yoke (10, 20) for attaching a wheel pivot of the vehicle. Said strut rod comprises a means for detecting a crack. Said detection means consists of at least one additional edge (40) protruding from the outer surface of said lower part in the form of a yoke of the strut rod, in an area that may potentially crack in the event of an accidental impact on the wheel of the vehicle.

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