-
公开(公告)号：US10941830B2
公开(公告)日：2021-03-09
申请号：US16478196
申请日：2018-01-16
Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
Inventor： Kosuke Kadokura , Takao Nakadate , Shunsuke Mori , Osamu Yuno
Abstract: In a shock absorber, an extension-side check valve permitting a flow of hydraulic fluid directed from a common passage to a compression-side passage side, and a compression-side orifice establishing communication between the compression-side passage and a compression-side back-pressure chamber are provided in an extension-side discharge passage. A compression-side check valve permitting a flow of hydraulic fluid directed from the common passage to an extension-side passage side, and an extension-side orifice establishing communication between the extension-side passage and an extension-side back-pressure chamber are provided in a compression-side discharge passage. A pilot valve includes a valve body slidably inserted in the common passage, and a valve spring biasing the valve body in a valve-opening direction. The valve body includes a fitting portion fitted in a passage between the back-pressure chamber on an upstream side and the common passage on a downstream side when the valve body is stroked in the valve-opening direction.
-
公开(公告)号：US10682894B2
公开(公告)日：2020-06-16
申请号：US15562161
申请日：2015-05-29
Applicant: Hitachi Automotive Systems, Ltd.
Inventor： Tsutomu Ito , Shunsuke Mori , Tomoyuki Lee , Tsutomu Iwamura , Yuki Yoshida
IPC: B60G17/052 , B60G17/048 , B60G11/27 , B60G17/015
Abstract: A replenishment passage connects a compressor to a tank, and a first check valve is provided in the middle of the replenishment passage. A supply/discharge passage connects the tank to air suspensions. A supply/discharge switching valve is provided in the middle of the supply/discharge passage, and suspension control valves are provided at a location between the supply/discharge switching valve and the air suspensions. A discharge passage connects the supply/discharge switching valve to a suction port of the compressor, and a discharge passage open/close valve is provided in the middle of the discharge passage. When a vehicle height is lowered, air within the air suspensions is guided to the suction port of the compressor through the discharge passage, compressed by the compressor, and supplied into the tank.
-
公开(公告)号：US11204074B2
公开(公告)日：2021-12-21
申请号：US16643164
申请日：2018-09-04
Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
Inventor： Shunsuke Mori , Takao Nakadate , Yu Ishimaru , Osamu Yuno
Abstract: Provided is a shock absorber that is so designed that fail-down is prevented, which is caused when solenoid thrust is relatively small. The shock absorber comprises a chamber disposed on one side of a valve element and communicating with a cylinder's one side chamber and a cylinder's other side chamber, a first communication passage allowing the chamber and the cylinder's one side chamber to communicate with each other, and a second communication passage allowing the chamber and the cylinder's other side chamber to communicate with each other. The first communication passage includes a first orifice, and the second communication passage includes a second orifice.
-
公开(公告)号：US09206876B2
公开(公告)日：2015-12-08
申请号：US14224768
申请日：2014-03-25
Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
Inventor： Mikio Yamashita , Shunsuke Mori
Abstract: For the extension and compression strokes of a piston rod, a damping force generating mechanism generates a damping force by controlling the flow of hydraulic oil caused by the sliding movement of a piston in a cylinder. The damping force generating mechanism has a pilot-type main valve, a pilot-type control valve, and a pilot valve. The main valve has a pilot chamber into which the oil is introduced to adjust the valve-opening pressure of the main valve by the pressure in the pilot chamber. The control valve has a pilot chamber into which the oil is introduced to adjust the valve-opening pressure of the control valve by the pressure in the pilot chamber. The pilot valve controls the pressure in the pilot chamber of the control valve. The control valve controls the pressure in the pilot chamber of the main valve.
Abstract translation: 对于活塞杆的延伸和压缩冲程，阻尼力产生机构通过控制由气缸中的活塞的滑动运动引起的液压油的流动来产生阻尼力。 阻尼力产生机构具有先导式主阀，先导式控制阀和先导阀。 主阀具有引导室，导入油通过导向室中的压力调节主阀的开阀压力。 控制阀具有引导室，导入油通过导向室中的压力调节控制阀的开阀压力。 先导阀控制控制阀的先导室中的压力。 控制阀控制主阀的先导室中的压力。
-
公开(公告)号：US11255400B2
公开(公告)日：2022-02-22
申请号：US16311264
申请日：2017-06-21
Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
Inventor： Shunsuke Mori , Hiroshi Murakami
Abstract: A damping force adjustable shock absorber includes an electromagnetic damping force adjustment device (17) having a damping force adjustment valve (18), and a solenoid (33) configured to variably adjust the damping force. The solenoid includes a coil (39) configured to generate a magnetic force by power supply, a movable iron core (43) located on an inner peripheral side of the coil, an anchor member (40) configured to attract the movable iron core. The movable iron core includes a thick cylindrical portion (43A) and a taper cylindrical portion (43B). The thick cylindrical portion includes a fixation hole (43A1) in which a shaft portion (44) is fixed. The taper cylindrical portion has an inner peripheral surface flaring so as to define a taper shape. A recessed portion (43A2) is formed around the fixation hole. The recessed portion allows hydraulic fluid to flow in an axial direction of the movable iron core.
-
Patent Agency Ranking
公开(公告)号：US10533625B2
公开(公告)日：2020-01-14
申请号：US15762326
申请日：2016-09-27
Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
Inventor： Shunsuke Mori
IPC: F16F9/32 , F16F15/03 , F16F9/34 , F16F15/02 , F16F15/027
Abstract: A damping force adjustable shock absorber that smoothly transfers a magnetic flux while a solenoid is downsized. An electromagnetic damping force adjustment device of the damping force adjustable shock absorber includes a damping force adjustment valve for generating a damping force, and a solenoid for variably adjusting the generated damping force. The solenoid includes a coil configured to generate a magnetic force through supply of current, a cap member having a bottomed tubular shape disposed on an inner peripheral side of the coil, a movable iron core disposed on an inner peripheral side of the cap member, an anchor member configured to attract the movable iron core, a shaft part provided on an inner peripheral side of the movable iron core, and a back-pressure-chamber formation member having a bottomed tubular shape, which is positioned on another end side of the shaft part, and configured to form a back pressure chamber.
-
公开(公告)号：US11261932B2
公开(公告)日：2022-03-01
申请号：US16633004
申请日：2018-07-24
Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
Inventor： Kosuke Kadokura , Yohei Katayama , Takao Nakadate , Osamu Yuno , Shunsuke Mori
Abstract: The present invention provides a shock absorber capable of improving responsiveness during an extension stroke without leading to an increase in an axial length. A shock absorber includes a chamber provided on a one-side end of a pilot valve and disposed in communication with a cylinder upper chamber, a communication passage configured to establish communication between the chamber and a cylinder lower chamber via a compression-side passage, and a check valve configured to permit hydraulic fluid in the communication passage to flow into the cylinder lower chamber during an extension stroke.
-
公开(公告)号：US09810281B2
公开(公告)日：2017-11-07
申请号：US14910823
申请日：2014-08-11
Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
Inventor： Shunsuke Mori , Fumiyuki Yamaoka , Mikio Yamashita
IPC: F16F9/46
CPC classification number: F16F9/465
Abstract: PROBLEMProvided is a damping force control type shock absorber capable of obtaining an appropriate damping force even in the event of a failure independently of the stoke of a valving element of a solenoid valve.MEANS FOR SOLVINGA piston 5 having a piston rod 6 connected thereto is fitted in a cylinder 2 having hydraulic oil sealed therein, and a flow of hydraulic oil induced by movement of the piston 5 is controlled by a damping force generating mechanism 26 to generate a damping force. In the damping force generating mechanism 26, damping force is generated by a pilot-type main valve 27 and a normally-open pilot valve 28 which is a solenoid valve, and the damping force is adjusted by energization of a coil 37. A fail-safe valve 100 is provided downstream of the pilot valve 28. During normal operations, the fail-safe valve 100 opens the flow path through excitation of the coil 37 of the pilot valve 28. In the event of a failure, due to loss of excitation, the fail-safe valve 100 restricts the flow path to generate an appropriate damping force in place of the pilot valve 28, which has become inoperable.
-
公开(公告)号：US20150183443A1
公开(公告)日：2015-07-02
申请号：US14410789
申请日：2013-06-25
Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
Inventor： Tsutomu Iwamura , Yusuke Akami , Noriyuki Utsumi , Tomoyuki Lee , Yusei Kimura , Shunsuke Mori
Abstract: A damper apparatus (12) as the force generation mechanism mounted between a vehicle body (2) and a bogie (5) includes an attenuation damper (13), an electric damper (14), and a gear apparatus (15). The attenuation damper includes a rod protruding from a cylinder, and generates a damping force by converting motion energy of a forward or backward movement of the rod into heat energy. The electric damper includes a stator, and a movable element linearly movable relative to the stator. The gear apparatus is disposed between the attenuation damper and the electric damper, and can mechanically switch the attenuation damper and the electric damper between a series connection and a parallel connection. The gear apparatus switches a connection state between the attenuation damper and the electric damper according to the condition.
Abstract translation: 作为安装在车体（2）和转向架（5）之间的力产生机构的阻尼器装置（12）包括衰减阻尼器（13），电动减振器（14）和齿轮装置（15）。 衰减阻尼器包括从气缸突出的杆，并且通过将棒的向前或向后运动的运动能转换成热能来产生阻尼力。 电动阻尼器包括定子和可相对于定子线性移动的可动元件。 齿轮装置设置在衰减阻尼器和电动阻尼器之间，并且可以在串联连接和并联连接之间机械地切换衰减阻尼器和电动阻尼器。 齿轮装置根据条件切换衰减阻尼器和电动阻尼器之间的连接状态。
-
公开(公告)号：US10352390B2
公开(公告)日：2019-07-16
申请号：US15562483
申请日：2016-09-27
Applicant: Hitachi Automotive Systems, Ltd.
Inventor： Kengo Hase , Fumiyuki Yamaoka , Shunsuke Mori , Mikio Yamashita , Daiki Miyazawa
IPC: F16F9/46 , F16F9/32 , F16F9/18 , F16K31/06 , F16L37/088
Abstract: Provided are a damper configured such that the axial play between a coil case and a case member can be eliminated without increasing a size of a solenoid, and a method of assembling the damper. An O-ring (seal member) is elastically supported by a tapered hole formed in an inner peripheral surface of a case member and a tapered shaft formed in an outer peripheral surface of a coil case, and a retaining ring is configured to receive an axial force generated by the O-ring. The configuration enables the play between the coil case and the case member of the solenoid to be eliminated. A damping force regulation mechanism, and in turn the damper, may be made more compact in comparison with a case in which the O-ring is received by the opening side end face of the case member.
-
-
-
-
-
-
-
-
-
Search Results
10
records
(took 0.017 seconds)
