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公开(公告)号：US11767898B2
公开(公告)日：2023-09-26
申请号：US17030215
申请日：2020-09-23
申请人： Showa Corporation
发明人： Yosuke Fujikawa , Yosuke Murakami
CPC分类号： F16F9/3482 , F16F9/464 , F16F9/467
摘要： A valve mechanism includes: a cylindrical body; a plurality of valve bodies; and a drive valve. The drive valve includes a shaft portion having a flow path penetrating in the axial direction, and a first step portion extending from an outer peripheral surface of the shaft portion to a radial outside of the shaft portion. The shaft portion has a protrusion portion protruding further toward the cylindrical body side than the first step portion and a base portion extending to a side opposite to the protrusion portion with respect to the first step portion. A gap between the valve bodies is changed by elastically deforming an inner peripheral portion of the valve body, which comes into contact with the drive valve moved in a direction approaching the valve body, in a direction approaching the cylindrical body with respect to an outer peripheral portion of the valve body.
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公开(公告)号：US11629773B2
公开(公告)日：2023-04-18
申请号：US17077626
申请日：2020-10-22
申请人： SHOWA CORPORATION
发明人： Yosuke Murakami
IPC分类号： F16F9/46 , F16F9/56 , B60G15/12 , B60G17/02 , F16F1/12 , B60G17/027 , B60G17/044 , B60G15/06
摘要： A hydraulic shock absorber includes a piston, a damper tube, a suspension spring, a plunger, a jack chamber, a pump case, a pump piston, a screw shaft, and a drive unit. Both end surfaces of the pump piston in a reciprocating direction are a first end surface demarcating the pump chamber, and a second end surface demarcating the gas chamber, the second end surface having a screw hole into which the screw shaft is screwed. The pump piston includes a space portion between a bottom plate defining the first end surface and the screw hole. The screw shaft has a through-hole connecting the gas chamber with the space portion.
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公开(公告)号：US11313428B2
公开(公告)日：2022-04-26
申请号：US16799289
申请日：2020-02-24
申请人： Showa Corporation
IPC分类号： F16F9/32 , F16F9/19 , F16F9/38 , F16F13/00 , G01D5/20 , B60G13/08 , B60G15/06 , B62K25/28 , F16F9/58
摘要： A stroke sensor system includes a conductor, a coil which moves relative to the conductor and is fitted to one end side of the conductor; and a ferromagnetic body which is arranged on an end position side of the coil. A position of an end portion on one end side of the conductor in a state where a fitting ratio between the conductor and the coil is maximized is defined as the end position. The ferromagnetic body is located on an opposite side to the conductor with the coil interposed therebetween.
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公开(公告)号：US11149815B2
公开(公告)日：2021-10-19
申请号：US16799450
申请日：2020-02-24
申请人： Showa Corporation
发明人： Naoya Kuroiwa , Yosuke Fujikawa , Yosuke Murakami
摘要： A shock absorber includes a hollow rod, a suspension spring arranged outside the hollow rod, a spring receiver arranged to be displaceable with respect to the hollow rod and receiving a load of the suspension spring, an adjusting screw inserted into one end side of the hollow rod and configured to adjust a position of the suspension spring by restricting movement of the spring receiver to the one end side, and a shaft member which transmits a load received by the spring receiver to the adjusting screw inside the hollow rod. An insertion portion which extends in an axial direction of the hollow rod and into which the shaft member is inserted is provided on a side surface of the hollow rod.
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公开(公告)号：US10919597B2
公开(公告)日：2021-02-16
申请号：US15751751
申请日：2017-03-07
申请人： Showa Corporation
IPC分类号： B62K25/28 , B60G17/015 , F16F13/00 , B60G17/018 , B62K25/08 , B60G17/016 , B62K25/04
摘要： A vehicle height adjustment device includes a rear suspension, an electromagnetic valve control unit, and a weight estimation unit. The rear suspension includes a support member. The electromagnetic valve control unit determines a target movement based on an interrelation between the target movement and a weight applied to a vehicle, under which the target movement is set to an upper limit when the weight is larger than a predetermined weight, so that an actual movement of the support member reaches the target movement. The electromagnetic valve control unit determines the target movement based on a temporary weight. The weight estimation unit increases the temporary weight, even when the actual movement reached the target movement. The electromagnetic valve control unit decreases the target length, even when the temporary weight increased. The weight estimation unit estimates as the weight the temporary weight when the actual length has finally reached the target length.
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公开(公告)号：US10457109B2
公开(公告)日：2019-10-29
申请号：US15203453
申请日：2016-07-06
申请人： Showa Corporation
IPC分类号： B60G17/00 , B60G17/019 , B60G17/015 , B60G17/027
摘要： A vehicle height adjustment device includes an actuator, a detector, and a controller. The actuator is driven when supplied with a current and is configured to change a relative position of a body of a vehicle relative to an axle of a wheel of the vehicle. The detector is configured to detect the relative position. The controller is configured to control the current supplied to the actuator to make the relative position a target value so as to adjust a vehicle height of the body. When a detection value of the detector is smaller than the target value of the relative position, the controller is configured to alternately supply an increase current and a maintenance current to the actuator. The increase current increases the relative position to increase the vehicle height. The maintenance current maintains the relative position to maintain the vehicle height.
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公开(公告)号：US10315722B2
公开(公告)日：2019-06-11
申请号：US15463851
申请日：2017-03-20
申请人： Showa Corporation
发明人： Yosuke Murakami , Hiroyuki Miyata
IPC分类号： F16F9/56 , B62K25/08 , B60G11/56 , B60G17/048 , B62K25/04
摘要： A flow path control device according to one embodiment includes a first valve which transitions between a closed state where a first flow is closed and an open state where the first flow path is open by moving toward an space from the closed state. The first valve is formed with an axial through-hole that communicates with the first flow path and the space. A pressure-receiving area of the first valve against a jack chamber is smaller than that against the space. Further, a second valve is provided in the space on a second flow path so as to transition between a first state where the axial through-hole is closed and an inflow path oriented toward the space from the jack chamber is open and a second state where it is closed and the axial through-hole is open.
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公开(公告)号：US10286975B2
公开(公告)日：2019-05-14
申请号：US15463756
申请日：2017-03-20
申请人： Showa Corporation
发明人： Hiroyuki Miyata , Yosuke Murakami
IPC分类号： F16F1/12 , B60G11/56 , B62K25/04 , B62K25/08 , B60G17/048
摘要： A flow path control device according to one embodiment includes a first valve, a unit main body and a control valve. The unit main body has an accommodation portion, a first radial communication hole and a side recess portion. The accommodation portion is recessed from a chamber accommodating the oil to cause the first valve to close the first radial communication hole. The side recess portion is recessed from the chamber so as to be continuous to the accommodation portion and not to be continuous to the first radial communication hole. The control valve is movable in the accommodation portion of the unit main body between a position at which a groove of the control valve communicates with the side recess portion and the first radial communication hole and a position at which the groove does not communicate with them.
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公开(公告)号：US09855811B2
公开(公告)日：2018-01-02
申请号：US15051117
申请日：2016-02-23
申请人： Showa Corporation
发明人： Yosuke Murakami
IPC分类号： F16F9/516 , B60G17/015 , B60G17/08 , F16F9/48 , F16F15/00 , F16F9/18 , B60G15/06 , B62K25/10
CPC分类号： B60G17/0152 , B60G15/062 , B60G17/08 , B60G2202/31 , B60G2206/41 , B60G2300/12 , B60G2400/252 , B60G2500/10 , B60G2500/11 , B60G2600/182 , B62K25/10 , F16F9/187 , F16F9/48 , F16F9/516 , F16F15/002
摘要： A vehicle suspension system includes a shock absorber having a cylinder in which a fluid is sealed, a piston slidably fitted into the cylinder, a piston rod connected to the piston and extending to an outside of the cylinder and a damping force generating apparatus controlling a flow of the fluid generated by a sliding motion of the piston inside the cylinder, a suspension spring, a detector detecting a stroke position of the piston rod with respect to the cylinder and a controller controlling the damping force generating apparatus so that one of an extension side damping force and a compression side damping force is increased and other of them is reduced in proportion to the stroke position detected by the detector.
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公开(公告)号：US09764793B2
公开(公告)日：2017-09-19
申请号：US15052048
申请日：2016-02-24
申请人： Showa Corporation
发明人： Yosuke Murakami
CPC分类号： B62K25/08 , F16F9/3292
摘要： A front fork has a damping variable leg including: an outer tube at an upper end side; an inner tube at a lower end side and inserted into the outer tube; a piston rod attached to the outer tube and extending toward the lower end side; a piston at a lower end of the piston rod; and a damping force variable device at the piston so as to generate variable damping force by controlling a flow of an operating fluid. The damping variable leg further includes: a conductor member attached to the piston; and a coil conductor covered with an insulating member and attached to the inner tube. The conductor member is configured to be inserted into the coil conductor. The damping variable leg detects a stroke amount of the damping variable leg based on a change in inductance of the coil conductor.
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