公开(公告)号：US20210163060A1

公开(公告)日：2021-06-03

申请号：US17053167

申请日：2019-05-30

Applicant: SHOWA CORPORATION

Inventor： Hiroshi Fujita ,  Hirotoshi Uchibori

IPC: B62D5/00 ,  B62D1/16 ,  B62D1/04

Abstract: A steer-by-wire steering device includes a first member, a second member, and a stopper. The first member includes a first base surrounding an input shaft and rotatable, a first protrusion protruding from the first base in a radial direction or in an axial direction, and a first weight provided on the first base so as to make a weighted center consistent with a center of the input shaft. The second member is rotatable together with the first member with the first protrusion being abutting the second protrusion. The stopper is provided on a trajectory of the second protrusion, and is capable of restricting the turn of a steering wheel via the input shaft when abutting with the second protrusion.

公开(公告)号：US10968975B2

公开(公告)日：2021-04-06

申请号：US16483244

申请日：2017-03-08

Applicant: Showa Corporation

Inventor： Nobuyuki Muraguchi ,  Satomi Hojo ,  Gota Nakano

IPC: F16F9/00 ,  F16F9/32 ,  F16F9/18

Abstract: This hydraulic damping device comprises a cylinder for containing oil; a reservoir chamber R which is provided in the outer part of the cylinder and in which liquid accumulates; a piston provided so as to be axially movable within the cylinder and dividing the space within the cylinder into a first oil chamber and a second oil chamber, which contain oil; a baffle member provided as a separate element from the cylinder, the baffle member having a body which is provided in the reservoir chamber R, and also having a protrusion which protrudes from the body, the baffle member preventing the waving of the surface of oil in the reservoir chamber R; and a limiting section (first section to be held) provided to the baffle member and limiting the movement of the baffle member on both one side and the other side in the axial direction.

公开(公告)号：US20210078376A1

公开(公告)日：2021-03-18

申请号：US17108746

申请日：2020-12-01

Applicant: SHOWA CORPORATION

Inventor： Yasuhiro AOKI

IPC: B60G13/08 ,  F16F9/06 ,  F16F9/32 ,  F16F9/36

Abstract: A shock absorber includes an outer tube, an inner tube fitted to the outer tube so as to be able to move forward and backward, a cylinder provided inside the outer tube and extending inside the inner tube, a rod extending from an end portion of the inner tube exposed from the outer tube to an inside of the cylinder, and a piston which is provided on the rod and divides the inside of the cylinder to form a gas chamber. On an outer peripheral surface of the piston, a first lubricating member, a first seal member, and a second seal member are provided in this order from a side closest to the gas chamber to a side away from the gas chamber. The members are in sliding contact with an inner peripheral surface of the cylinder.

公开(公告)号：US20210048084A1

公开(公告)日：2021-02-18

申请号：US17077626

申请日：2020-10-22

Applicant: SHOWA CORPORATION

Inventor： Yosuke MURAKAMI

IPC: F16F9/46 ,  B60G15/12

Abstract: 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.

公开(公告)号：US10919597B2

公开(公告)日：2021-02-16

申请号：US15751751

申请日：2017-03-07

Applicant: Showa Corporation

Inventor： Yosuke Murakami ,  Hiroyuki Miyata ,  Fumiaki Ishikawa

IPC: B62K25/28 ,  B60G17/015 ,  F16F13/00 ,  B60G17/018 ,  B62K25/08 ,  B60G17/016 ,  B62K25/04

Abstract: 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.

公开(公告)号：US20210033163A1

公开(公告)日：2021-02-04

申请号：US17075807

申请日：2020-10-21

Applicant: SHOWA CORPORATION

Inventor： Gota NAKANO ,  Chikara YANAGISAWA

IPC: F16F9/46 ,  F16F9/348 ,  F16F9/18

Abstract: A damping force generating mechanism includes: a flow passage formation part that forms a flow passage through which a liquid flows; a valve configured to control a flow of the liquid in the flow passage; a back pressure control valve configured to control a pressure in a back pressure chamber that provides a back pressure to the valve by inflow of the liquid; and an accommodation part that is in a tubular shape with one side opening end narrower than another side opening end, forms the back pressure chamber, and accommodates at least the valve and the back pressure control valve.

公开(公告)号：US10899423B2

公开(公告)日：2021-01-26

申请号：US16438096

申请日：2019-06-11

Applicant: SHOWA CORPORATION

Inventor： Takahiko Saito ,  Yoshimitsu Komuro ,  Hayato Tsutsui

IPC: B63H5/125 ,  B63H20/08 ,  B63H20/10 ,  B63H20/02 ,  F15B11/08 ,  B63H20/00 ,  F15B11/16 ,  F15B15/14 ,  F15B15/18

Abstract: Provided is an outboard motor raising and lowering apparatus that is capable of automatically changing the speed of raising/lowering an outboard motor according to a status of the outboard motor. The outboard motor raising and lowering apparatus (1) includes: a first fluid passage that connects a pump (42), a second chamber(s) of one or more tilt cylinders (14), and a second chamber(s) of one or more trim cylinders (12); a second fluid passage that is connected to the first chamber of at least one of the one or more trim cylinders; and a switching valve (60) provided at the second fluid passage.

公开(公告)号：US20200377149A1

公开(公告)日：2020-12-03

申请号：US16996430

申请日：2020-08-18

Applicant: SHOWA CORPORATION

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

IPC: B62D5/04 ,  B62D6/10

Abstract: A steering control device which applies an assist torque or a reaction torque to a steering member operated by a driver, includes: a torque loss estimation unit which estimates torque loss; and a correction amount calculation unit which calculates a correction amount according to a rack axial force estimation value calculated based on a roll rate when the torque loss estimation unit estimates the torque loss.

公开(公告)号：US20200171909A1

公开(公告)日：2020-06-04

申请号：US16782724

申请日：2020-02-05

Applicant: SHOWA CORPORATION

Inventor： Yosuke MURAKAMI

IPC: B60G17/08

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：US20200080612A1

公开(公告)日：2020-03-12

申请号：US16682057

申请日：2019-11-13

Applicant: Showa Corporation

Inventor： Gota NAKANO ,  Kunio SHIBASAKI

IPC: F16F9/18 ,  F16F9/34

Abstract: The hydraulic damper 1 includes: a cylinder 11 storing oil; a piston unit connected to a rod moving in an axial direction and configured to move within the cylinder 11; an outer cylinder body 12 outside of the cylinder 11 and forming a communication path L through which oil flows along with movement of the piston unit; a damper case 13 outside of the cylinder 11 and forming a reservoir chamber R to retain oil; a damping force changer 52 external to the cylinder 11 and configured to generate a damping force by throttling flow of oil along with movement of the piston unit and configured to change magnitude of the damping force; and a joint piece 61 forming a channel 61R of oil from the communication path L to the damping force changer 52 and including an external valve to control flow of oil flowing through the channel 61R.