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公开(公告)号：US20230122543A1
公开(公告)日：2023-04-20
申请号：US17906233
申请日：2021-03-11
申请人： KYB Corporation
发明人： Hiroaki KUBOI , Tetsuya IWANAJI
IPC分类号： F04B1/324 , F04B1/2078
摘要： 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.
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公开(公告)号：US20230067151A1
公开(公告)日：2023-03-02
申请号：US17760351
申请日：2021-01-27
申请人： KYB Corporation
发明人： Kenta KURIHARA
IPC分类号： B60G15/06
摘要： 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.
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公开(公告)号：US20230011239A1
公开(公告)日：2023-01-12
申请号：US17756861
申请日：2020-10-13
申请人： KYB Corporation
发明人： Tsuyoshi HIRONAKA , Midori NAGASHIMA , Ken TSUKUI , Kazuya MUROTA
摘要： A working fluid supply system is provided with: a first oil pump and a second oil pump driven by an engine; a switching valve configured to cause a discharge passage of the second oil pump to communicate with at least one of a supply passage and a first drain passage; and a controller configured to switch the switching valve. The controller is configured to switch the switching valve by spending a switching time that is set in accordance with a degree of pressure variation predicted to be caused in the supply passage when the switching valve is switched instantaneously.
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公开(公告)号：US11536348B2
公开(公告)日：2022-12-27
申请号：US16638472
申请日：2018-07-24
申请人： KYB Corporation
发明人： Takaya Yagyu
IPC分类号： F16H1/16 , F16H57/022 , B62D5/04 , F16H57/021
摘要： A power steering device includes a bearing rotatably supporting the tip side of a worm shaft, a gear case provided with the housing hole for housing the worm shaft and a holder housing the bearing. The holder includes a first holder holding the bearing, a second holder having the guide part configured to guide a movement of the second bearing toward a worm wheel, and a spring provided in a compressed state between the first holder and the second holder and configured to bias the first holder toward the worm wheel. The second holder includes a holder opening part configured to allow the bearing and the first holder to pass through thereof in the guiding direction of the guide part to guide the bearing, and the first holder faces an inner peripheral surface of the housing hole through the holder opening part.
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公开(公告)号：US11536346B2
公开(公告)日：2022-12-27
申请号：US16976695
申请日：2019-03-08
申请人： KYB Corporation
发明人： Gai Cho , Naoki Kubota , Masahiro Miwa
摘要： A shock absorber includes a bearing unit having a bearing and a bearing holding member, and a seal unit having a seal member and a seal holding member. The seal holding member includes a seal accommodating portion being configured to accommodate the seal member, and an insertion hole through which a piston rod is inserted. The seal member is pressed against an outer circumferential surface of the piston rod and the seal accommodating portion by working-fluid pressure in the extension-side chamber. And the bearing is provided such that a first end surface of the bearing facing the seal member matches an aperture plane of a through hole of the bearing holding member or such that the first end surface of the bearing projects out from the aperture plane of the through hole.
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公开(公告)号：US11522407B2
公开(公告)日：2022-12-06
申请号：US16616123
申请日：2018-06-19
申请人： KYB CORPORATION
发明人： Sayaka Ueno , Yuu Eguchi , Syun Matsuda
IPC分类号： H02K5/24 , H02K11/33 , H02K11/01 , H02K5/173 , H02K5/22 , H02K7/08 , H02K21/14 , B62D5/04 , H02K3/50 , H05K7/14 , H05K7/20
摘要： [Object] To provide an electronic apparatus capable of inhibiting a failure due to dropping of a screw from occurring.
[Solving Means] An electronic apparatus 100 according to an embodiment of the present invention includes: a casing 10; a cover portion (case cover 20); a circuit board 22; a screw member 80; and a facing member (holding member 60). The cover portion has a first surface and a second surface and is to be attached to an opening portion 11 of the casing 10, the first surface including a screw hole 203 and facing the casing 10, the second surface being opposite to the first surface. The circuit board 22 is to be disposed on the first surface. The screw member 80 includes a head portion 81 and a shank 82 and fixes the circuit board 22 to the cover portion, the head portion 81 engaging with the circuit board 22, the shank 82 including a groove 82s and passing through the circuit board 22, the groove 82s being screwed into the screw hole 203. The facing member is to be disposed inside the casing 10 and faces the head portion 81 with a distance (L1) smaller than a length (L2) of the shank 82.-
公开(公告)号：US11466707B2
公开(公告)日：2022-10-11
申请号：US16967615
申请日：2019-04-23
申请人： KYB Corporation
摘要： A fluid leakage detection system has a detection space to which working oil leaked out through a rod seal is guided; the rod seal being configured to seal an annular gap between a piston rod and a cylinder head; a sensor unit configured to detect pressure in the detection space; and a controller configured to acquire detected result from the sensor unit, wherein the controller has: a calculation unit configured to calculate a pressure parameter representing a pressure fluctuation in the detection space; a determination unit configured to determine occurrence of leakage of the working oil based on the pressure parameter; and the pressure parameter includes an upper limit value and a lower limit value of the pressure fluctuation obtained from the detected result detected by the sensor unit within a predetermined detection period.
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公开(公告)号：US20220316549A1
公开(公告)日：2022-10-06
申请号：US17690752
申请日：2022-03-09
申请人： KYB CORPORATION
发明人： Takeshi YASUI , Masaki KOYAMA , Naoki YAMAMOTO
摘要： A shock absorber is provided. The shock absorber of the present invention includes a shock absorber main body, a damping passage, a primary damping force generation component, and a secondary damping force generation component. The shock absorber main body has an outer tube and a rod and is stretchable. The damping passage communicates operating chambers with each other provided in the shock absorber main body. The primary and secondary damping force generation components are provided in series with the damping passage. The secondary damping force generation component includes a secondary valve, an annular facing portion, and a valve stopper. The annular facing portion faces the secondary valve with an annular gap between the annular facing portion and the secondary valve. The valve stopper has elasticity to allow bending, and when the secondary valve bends and comes in contact with the valve stopper, restricts the secondary valve from bending.
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公开(公告)号：US11415218B2
公开(公告)日：2022-08-16
申请号：US17285004
申请日：2019-10-21
申请人： KYB Corporation
发明人： Kazuya Murota
摘要： A working fluid supply device is provided with: a first oil pump and a second oil pump driven by an engine; a third oil pump driven by an electric motor; a first unloading valve configured to shift the second oil pump to a no-load operation state; and a controller configured to control a supply state of working oil to an automatic transmission. The controller sets the supply state to a supply state selected from: a first supply state in which the working oil is supplied only from the first oil pump; a second supply state in which the working oil is supplied from the first oil pump and the third oil pump; a third supply state in which the working oil is supplied from the first oil pump and the second oil pump; and a fourth supply state in which the working oil is supplied from the first oil pump, the second oil pump, and the third oil pump.
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公开(公告)号：US20220242185A1
公开(公告)日：2022-08-04
申请号：US17612318
申请日：2020-05-20
申请人： KYB Corporation
发明人： Makoto HANAI , Takuhiro KONDO
摘要： A suspension device includes a leaf spring and a buffer. The leaf spring applies an elastic force for relatively moving an unsprung member in a predetermined direction with respect to a body (sprung member) of a vehicle. The buffer includes a first expansion/contraction member, a second expansion/contraction member, an intermediate member, and a damping passage. The first and second expansion/contraction members form first and second gas chambers filled with gas therein and are expandable and contractible. An upper end and a lower end of the first and second expansion/contraction members are connected to the body. The intermediate member couples the first and second expansion/contraction members and is connected to the leaf spring. The damping passage allows the first and second gas chambers to communicate with each other, and applies resistance to flow of flowing gas. When one of the first and second expansion/contraction members expands, the other contracts.
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