公开(公告)号：US10106007B2

公开(公告)日：2018-10-23

申请号：US15186014

申请日：2016-06-17

Applicant: Showa Corporation

Inventor： Yosuke Murakami ,  Fumiaki Ishikawa ,  Hiroyuki Miyata

IPC: B60G17/018 ,  B60G17/015 ,  B62K25/06 ,  B60G17/016 ,  B60G17/027 ,  B62K11/04 ,  B62K25/04

Abstract: In a vehicle height adjustment device, an operation amount of an actuator increases in accordance with supplied current, a detector detects a vehicle height, and a changer changes the vehicle height in accordance with the operation amount of the actuator. The changer shifts to a vehicle height increasing state or to a vehicle height decreasing state based on whether the operation amount is not higher than a predetermined amount. A controller controls the current supplied to the actuator to make the relative position have a target value. The controller determines a target current supplied to the actuator based on a control map that correlates a deviation between the target value of the relative position and a detection value to the target current.

公开(公告)号：US09816839B2

公开(公告)日：2017-11-14

申请号：US14836319

申请日：2015-08-26

Applicant: Showa Corporation

Inventor： Yosuke Murakami

IPC: G01D5/20 ,  B62J99/00

CPC classification number: G01D5/202 ,  B62J99/00 ,  B62J2099/002

Abstract: A stroke sensor system includes a tubular vehicle-body-side member, a tubular vehicle-wheel-side member, and a displacement obtainer. The tubular vehicle-body-side member is disposed at a vehicle body side. The tubular vehicle-wheel-side member is coupled to the vehicle-body-side member on a vehicle wheel side and movable in an axial direction of the vehicle-body-side member relative to the vehicle-body-side member. At least one of the members is a conductor. Another one of the members includes a coil. The displacement obtainer includes a capacitor electrically coupled to the coil and constituting an LC oscillation circuit that outputs an oscillation waveform when the members move relative to each other. The displacement obtainer digitizes the oscillation waveform to obtain a reshaped waveform, divides a frequency of the reshaped waveform by a frequency division ratio to obtain a frequency-divided waveform, and uses the frequency-divided waveform to obtain a displacement by which the members move relative to each other.

公开(公告)号：US09694871B2

公开(公告)日：2017-07-04

申请号：US15070642

申请日：2016-03-15

Applicant: Showa Corporation

Inventor： Yosuke Murakami

IPC: B62K25/28 ,  F16F9/18 ,  F16F9/46

CPC classification number: B62K25/283 ,  F16F9/185 ,  F16F9/465 ,  F16F2230/24

Abstract: A shock absorber includes: a cylinder; a piston; a piston rod; and a damping-force generating device that controls a flow of oil, caused by sliding of the piston in the cylinder, wherein the damping-force generating device includes: a valve body that generates a damping force according to opening and closing of the valve body on a channel in which the oil flows; a valve seat on which the valve body seats to close the channel; and an actuator that includes a plunger generating thrust to the valve body in a valve closing direction and a plunger chamber in which the oil is filled in order to actuate the plunger, and the plunger chamber communicates with a downstream side in a flowing direction of the oil with reference to a place where the valve body seats on the valve seat.

公开(公告)号：US09067636B2

公开(公告)日：2015-06-30

申请号：US13800934

申请日：2013-03-13

Applicant: SHOWA CORPORATION

Inventor： Yosuke Murakami

IPC: F16F9/14 ,  B62K25/04 ,  F16F9/56 ,  B60G17/027 ,  B60G17/044

CPC classification number: B62K25/04 ,  B60G17/0272 ,  B60G17/044 ,  B60G2206/41 ,  B60G2300/12 ,  B60G2500/02 ,  B60G2500/324 ,  B62K2025/045 ,  F16F9/56

Abstract: In a vehicle-height adjustment apparatus of a motorcycle having a hydraulic jack and a hydraulic pump attached to a hydraulic shock absorber, a structure is provided in which an oil return path of a hydraulic jack and a suction port of a hydraulic pump are not required to be opened in a sliding surface of a piston in a damper tube. In the vehicle-height adjustment apparatus of a motorcycle, an oil return path is opened in an outer flow path of the damper tube to cause the oil of a jack chamber to return to the oil chamber of the damper tube when a plunger of the hydraulic jack reaches a protruding end in the jack chamber.

Abstract translation: 在具有安装在液压缓冲器上的液压千斤顶和液压泵的摩托车的车高调整装置中，设置了不需要液压千斤顶的回油通路和液压泵的吸入口的结构 在阻尼管中的活塞的滑动表面中打开。 在摩托车的车高调节装置中，在阻尼管的外流路中开启回油通路，使液压缸的柱塞返回到减振管的油室， 千斤顶到达插孔室中的突出端。

公开(公告)号：US20140077466A1

公开(公告)日：2014-03-20

申请号：US13799091

申请日：2013-03-13

Applicant: SHOWA CORPORATION

Inventor： Yosuke Murakami ,  Tadashi Hachisuka ,  Takahiro Kasuga ,  Fumiaki Ishikawa

IPC: B62K25/06 ,  B62K25/10 ,  B62K25/08

CPC classification number: B62K25/06 ,  B60G17/015 ,  B60G17/017 ,  B60G17/021 ,  B60G2300/12 ,  B60G2500/30 ,  B62K25/04 ,  B62K25/08 ,  B62K25/10 ,  B62K2025/044

Abstract: An object of the present invention is to stabilize a rider's driving position in spite of a change in vehicle height. Provided is a motorcycle 1 that adjusts a vehicle height by interlocking a rear-wheel-side vehicle height adjusting operation based on controllable actuation of a hydraulic jack 41 provided in a rear suspension 10, with a front-wheel-side vehicle height adjusting operation based on controllable actuation of a hydraulic jack 141 provided in a front fork 110.

Abstract translation: 本发明的目的在于稳定驾驶员的驾驶位置，尽管车高的变化。 提供了一种摩托车1，其通过基于设置在后悬架10中的液压千斤顶41的可控制的动作将基于前轮侧车辆高度调节操作的后轮侧车辆高度调整操作 在设置在前叉110中的液压千斤顶141的可控致动上。

公开(公告)号：US11712940B2

公开(公告)日：2023-08-01

申请号：US16782724

申请日：2020-02-05

Applicant: SHOWA CORPORATION

Inventor： Yosuke Murakami

IPC: B60G17/08 ,  F16F9/48 ,  F16F9/512 ,  F16F9/516

CPC classification number: B60G17/08 ,  F16F9/48 ,  F16F9/512 ,  F16F9/516 ,  B60G2202/24 ,  B60G2300/12 ,  B60G2400/10 ,  B60G2400/25 ,  B60G2500/114 ,  B60G2600/70 ,  B60G2800/91

Abstract: A suspension device includes: a suspension including a damping device which damps a force generated between a vehicle body and a wheel; and a damping force control unit that increases a damping force of the damping device so as to be greater than the damping force generated when an acceleration of change in a stroke amount is less than a predetermined value determined in advance, when the acceleration of the change in the stroke amount is equal to or greater than the predetermined value, in which the stroke amount is an amount of displacement from a reference position of the wheel with respect to the vehicle body in an extension direction of the suspension.

公开(公告)号：US11215258B2

公开(公告)日：2022-01-04

申请号：US16722273

申请日：2019-12-20

Applicant: Showa Corporation

Inventor： Hiroyuki Miyata ,  Yosuke Murakami

IPC: F16F9/49 ,  F16F9/18 ,  B60G13/08

Abstract: A hydraulic shock absorber includes: a cylinder; a piston rod on which a first piston, a valve, and a second piston are disposed sequentially from one end side; and an oil lock portion that is disposed on the one end side inside the cylinder, and that forms a gap flow path between the oil lock portion and an outer circumferential surface of the first piston. The first piston has a piston internal flow path, and is displaceable in an axial direction of the piston rod. When the piston rod moves toward the one end side, the first piston relatively moves toward the other end side with respect to the piston rod and the other end side of the first piston abuts against the valve, so that due to a flow of working oil passing through the piston internal flow path, the valve bends to generate damping force.

公开(公告)号：US10654331B2

公开(公告)日：2020-05-19

申请号：US15752811

申请日：2017-03-07

Applicant: Showa Corporation

Inventor： Yosuke Murakami ,  Hiroyuki Miyata ,  Fumiaki Ishikawa

IPC: B60G17/016 ,  B60G17/015 ,  B60W40/13 ,  B60G17/08 ,  F16F9/46 ,  F16F9/56 ,  F16F9/32 ,  B62K25/04 ,  B60G17/044

Abstract: A vehicle height adjustment device includes front forks, a rear suspension, a weight estimation unit, and a front wheel-side target movement amount determination unit. The front fork includes a front wheel-side suspension spring and a front wheel-side support member, which supports one end of the front wheel-side suspension spring, and moves toward another end of the front wheel-side spring to change the front wheel-side suspension spring length. The rear suspension includes a rear wheel-side suspension spring and a rear wheel-side support member, which supports one end of the rear wheel-side suspension spring, and moves toward another one end of the rear wheel-side spring to change the rear wheel-side suspension spring length. The weight estimation unit estimates a weight applied to a vehicle. The front wheel-side target movement amount determination unit decreases, a movement amount of the front wheel-side support member as the estimated weight increases.

公开(公告)号：US10358182B2

公开(公告)日：2019-07-23

申请号：US15074077

申请日：2016-03-18

Applicant: Showa Corporation

Inventor： Yosuke Murakami ,  Fumiaki Ishikawa ,  Hiroyuki Miyata

IPC: F16F9/46 ,  B62K25/04 ,  B62K25/08 ,  B60G17/044 ,  F16F9/34 ,  F16F1/12 ,  B60G17/048

Abstract: A vehicle height adjustment device includes a spring having one end supported on a vehicle body side and another end supported on a wheel side. An adjustor includes an accommodation chamber accommodating fluid and adjusts a length of the spring in accordance with an amount of fluid in the accommodation chamber. A storage chamber stores fluid. A guide passage guides fluid from the accommodation chamber to the storage chamber. An actuator includes an operation rod to press a push rod. A valve body closes the guide passage when seated on a seat and opens the guide passage when pressed and detached from the seat by the push rod. A press member includes a contact portion and a shaft. The press member presses and seats the valve body on the seat. An accommodation member accommodates the valve body and the contact portion. A support member supports the shaft movably.

公开(公告)号：US10328764B2

公开(公告)日：2019-06-25

申请号：US15466428

申请日：2017-03-22

Applicant: Showa Corporation

Inventor： Yosuke Murakami ,  Hiroyuki Miyata ,  Fumiaki Ishikawa

IPC: F16F9/56 ,  B60G17/056 ,  B62K25/04 ,  B62K25/08 ,  B62K25/28 ,  B60G13/14 ,  B60G17/016 ,  B60G17/018 ,  B60G17/019 ,  B60G17/027 ,  B60G17/044

Abstract: A vehicle height adjustment apparatus includes a control device. The control device controls the opening degree of the solenoid valve to allow a movement amount of the support member to reach a movement amount target value that corresponds to the vehicle height set in advance, in accordance with the weight applied to the vehicle. The control device controls the opening degree of the solenoid valve to change the movement amount of the support member based on a difference between a value based on the information related to the vehicle height and a vehicle height-related target value, on condition that the movement amount of the support member reaches the movement amount target value and the value based on the information related to the vehicle height obtained by the information obtaining device does not reach the vehicle height-related target value that corresponds to the vehicle height set in advance.