公开(公告)号：US11305601B2

公开(公告)日：2022-04-19

申请号：US16548354

申请日：2019-08-22

Applicant: Showa Corporation

Inventor： Junya Nakamura

IPC: B60G17/018 ,  B60G17/016 ,  B60W30/02 ,  B60G17/019 ,  B60G17/08

Abstract: A control apparatus for a suspension apparatus includes: an acquisition section which acquires a stroke amount of the suspension apparatus disposed between a vehicle body and a wheel to damp vibration propagated from the wheel; a calculation section which calculates a stroke velocity based on the stroke amount; and a damping force control section which controls damping force of the suspension apparatus based on the stroke velocity. The calculation section includes a first calculation section which differentiates the stroke amount by use of a first time constant as a time constant, to thereby calculate a first stroke velocity, and a second calculation section which differentiates the stroke amount by use of a second time constant larger than the first time constant as a time constant, to thereby calculate a second stroke velocity, and calculates the stroke velocity based on the first stroke velocity and the second stroke velocity.

公开(公告)号：US11231082B2

公开(公告)日：2022-01-25

申请号：US16485082

申请日：2017-05-10

Applicant: Showa Corporation

Inventor： Gota Nakano ,  Kazunari Maeda ,  Hiroshi Endo ,  Seiryo Konakai

IPC: F16F9/18 ,  F16F9/348 ,  F16K47/02

Abstract: The hydraulic damping device includes: a cylinder storing fluid; a piston configured to form a channel through which the fluid flows along with relative movement of a rod relative to the cylinder in a specific direction; a valve having elasticity, the valve being configured to open and close the channel in the piston; a movement permitting part configured to permit the valve to move between a contact position and a spaced position, the contact position being a position where the valve contacts the piston, the spaced position being a position where the valve is spaced from the piston; a restricting part configured to restrict bending of the valve at the spaced position; and a pressing part having elasticity, the pressing part being configured to press the valve against the piston.

公开(公告)号：US11199238B2

公开(公告)日：2021-12-14

申请号：US16484031

申请日：2017-05-10

Applicant: Showa Corporation

Inventor： Gota Nakano ,  Kazunari Maeda ,  Hiroshi Endo ,  Seiryo Konakai

IPC: F16F9/50 ,  F16F9/348 ,  F16F9/18 ,  B60G13/08 ,  B60G17/08

Abstract: The hydraulic damping device includes: a cylinder storing fluid; a piston configured to form a channel through which the fluid flows along with relative movement of a rod relative to the cylinder in a specific direction; a valve having elasticity, the valve being configured to open and close the channel in the piston; a movement permitting part configured to permit the valve to move between a contact position and a spaced position, the contact position being a position where the valve contacts the piston, the spaced position being a position where the valve is spaced from the piston; a restricting part configured to restrict bending of the valve at the spaced position; and an imparting part having elasticity, the imparting part being configured to impart, to the valve, a load that is uneven in a circumferential direction of the valve and directed toward the piston.

公开(公告)号：US20210041899A1

公开(公告)日：2021-02-11

申请号：US17078854

申请日：2020-10-23

Applicant: SHOWA CORPORATION

Inventor： Yosuke MURAKAMI ,  Yosuke FUJIKAWA

IPC: G05D16/20

Abstract: A valve device includes an operating unit, a first pushing member, a plate-like member, a second pushing member, and a valve. The plate-like member includes a plurality of the moment arms arranged at intervals in a circumferential direction. A force point of each of the plurality of the moment arms is pushed by a front end of the first pushing member. The second pushing member has an acted surface receiving a force from an action point of each of the plurality of the moment arms. The plurality of the moment arms are integrally connected by an annular frame portion of the plate-like member where the fulcrum is disposed.

公开(公告)号：US20210016822A1

公开(公告)日：2021-01-21

申请号：US17061034

申请日：2020-10-01

Applicant: SHOWA CORPORATION

Inventor： Satoshi ENOMOTO ,  Takayuki TETSUKA

IPC: B62D5/04 ,  B62D3/12

Abstract: An electric power steering device includes: an electric motor; a rack shaft configured to move axially; a conversion unit configured to convert rotational driving force of the moto into movement of the rack shaft; a first housing configured to cover a part of an outer surface of the rack shaft and including a first leg portion fixed to a vehicle; a second housing configured to cover a part of the outer surface of the rack shaft and including a fourth connecting portion covering the conversion unit and a second leg portion fixed to the vehicle; and an intermediate housing disposed between the first and second housings and configured to cover a part of the outer surface of the rack shaft 3 and including a motor support portion supporting the motor.

公开(公告)号：US20210003189A1

公开(公告)日：2021-01-07

申请号：US17031167

申请日：2020-09-24

Applicant: Showa Corporation

Inventor： Yosuke FUJIKAWA ,  Yosuke MURAKAMI

IPC: F16F9/348 ,  F16F9/18 ,  F16F9/50 ,  F16K11/10

Abstract: A valve mechanism includes: a cylindrical body; a plurality of valve bodies; and a drive valve. The drive valve includes a shaft portion having therein a flow path penetrating in the axial direction, and a 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 tip portion which extends further on the cylindrical body side than the step portion. An outer diameter of the tip portion is smaller than an outer diameter of the 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.

公开(公告)号：US10793244B2

公开(公告)日：2020-10-06

申请号：US16274942

申请日：2019-02-13

Applicant: SHOWA CORPORATION

Inventor： Takahiko Saito ,  Yoshimitsu Komuro

IPC: B63H20/10 ,  B63H20/00 ,  B63H20/14

Abstract: Provided is an outboard motor raising and lowering apparatus that is capable of automatically changing the speed of raising/lowering of an outboard motor according to the status of the outboard motor. An outboard motor raising and lowering apparatus (1) includes: a first fluid passage that connects a pump (42) and a lower chamber(s) of one or more tilt cylinders (14); a second fluid passage that connects the first fluid passage and a lower chamber(s) of one or more trim cylinders (12); a switching valve (60) provided at the second fluid passage; and a control section (100) configured to control the switching valve (60) with reference to a watercraft status signal.

公开(公告)号：US20200307752A1

公开(公告)日：2020-10-01

申请号：US16675811

申请日：2019-11-06

Applicant: Showa Corporation

Inventor： Takahiko SAITO

IPC: B63H20/10

Abstract: An outboard motor lifting device includes a hydraulic source, a first oil channel connecting the hydraulic source with a second chamber of a tilt cylinder, a second oil channel connecting the first oil channel with a second chamber of a trim cylinder, a third oil channel connecting the hydraulic source with a first chamber of the tilt cylinder, a check valve provided between the second chamber of the tilt cylinder and a connection position between the first and second oil channels, a fourth oil channel connected to the third oil channel, and a switch valve provided on the second oil channel and connected with the fourth oil channel. The switch valve has a connection state where communication between the first oil channel and the second chamber of the trim cylinder is closed, and communication between the fourth oil channel and the second chamber of the trim cylinder is open.

公开(公告)号：US20200231204A1

公开(公告)日：2020-07-23

申请号：US16844587

申请日：2020-04-09

Applicant: Showa Corporation

Inventor： Ken ISSHIKI ,  Eishi ISHIMARU ,  Kyouichi TAGAMI ,  Nobuyuki ENOMOTO

IPC: B62D5/04 ,  B62D6/00

Abstract: Assist torque or reaction force torque with little unnatural feeling to a driver is applied. An ECU includes: a control amount calculation section that calculates a control amount for controlling magnitude of the assist torque or the reaction force torque with reference to steering torque applied to a steering member; and a control amount correction section that corrects the control amount calculated by the control amount calculation section with reference to a lateral G of a vehicle body, a steering angle of the steering member, and a steering angle speed of the steering member.

公开(公告)号：US10711781B2

公开(公告)日：2020-07-14

申请号：US15385465

申请日：2016-12-20

Applicant: Showa Corporation

Inventor： Toshio Nishikawa

IPC: F04C2/344 ,  F01C21/08 ,  F04C15/06 ,  F04C14/22 ,  F01C21/10 ,  F04C15/00

Abstract: An embodiment provides a vane pump device. In the vane pump device, vane grooves of a rotor include columnar grooves which accommodate oil, and support the vanes. An inner-plate low pressure side recess portion is provided in an end surface of an inner plate along a rotation direction, and supplies oil to the columnar grooves. An outer-plate low pressure side through-hole and an outer-plate low pressure side recess portion are provided in an end surface of an outer plate along the rotation direction, and supply oil to the columnar grooves at a position facing the inner-plate low pressure side recess portion. An opening area of the inner-plate low pressure side recess portion is equal to a sum of opening areas of the outer-plate low pressure side through-hole and the outer-plate low pressure side recess portion.