公开(公告)号：US20210190164A1

公开(公告)日：2021-06-24

申请号：US16332566

申请日：2017-01-16

Applicant: SHOWA CORPORATION

Inventor： Nobuyuki MURAGUCHI ,  Takao YAMAMOTO ,  Naoki SENOU

IPC: F16F1/12 ,  F16F9/58

Abstract: The rebound spring structure includes: a rebound spring; a lower rebound collar configured to hold an end on one side of the rebound spring; and an upper rebound collar configured to hold an end on the other side of the rebound spring, the rebound spring structure being positioned around a rod configured to move relative to a cylinder. The lower rebound collar is held by a piston rod. The upper rebound collar is movably fitted to the piston rod. The upper rebound collar includes a recess on an upper disk part configured to restrict movement of the rebound spring to the other side, the recess being configured to facilitate movement of the upper rebound collar in a circumferential direction of the piston rod.

公开(公告)号：US11027811B2

公开(公告)日：2021-06-08

申请号：US16675811

申请日：2019-11-06

Applicant: Showa Corporation

Inventor： Takahiko Saito

IPC: B63H20/10 ,  B63H20/08 ,  B63H20/12

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：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.