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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
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.
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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
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.
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公开(公告)号：US20200080613A1
公开(公告)日：2020-03-12
申请号：US16485082
申请日：2017-05-10
Applicant: Showa Corporation
Inventor： Gota NAKANO , Kazunari MAEDA , Hiroshi ENDO , Seiryo KONAKAI
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.
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公开(公告)号：US20200208707A1
公开(公告)日：2020-07-02
申请号：US16817137
申请日：2020-03-12
Applicant: Showa Corporation
Inventor： Gota NAKANO , Tomoaki SHINOZAKI
Abstract: The hydraulic shock absorber includes: a first cylinder containing fluid; a piston body including extension-side oil paths permitting flow of oil along with relative movement of the piston rod in the axial direction of the first cylinder; and an extension-side damping valve configured to open and close the extension-side oil paths of the piston body. The extension-side damping valve includes: a valve plate configured to close the extension-side oil paths by covering them and open them by deforming under pressure of oil; and a preload member configured to apply a preload to the valve plate. The preload member includes: a ring-shaped portion; and axis alignment portions configured to protrude from an outer periphery of the ring-shaped portion and contact the piston body to thereby perform axis alignment.
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公开(公告)号：US20170058987A1
公开(公告)日：2017-03-02
申请号：US15230899
申请日：2016-08-08
Applicant: Showa Corporation
Inventor： Gota NAKANO
CPC classification number: F16F9/34 , B60G13/08 , B60G2202/24 , B60G2500/11 , F16F9/185 , F16F9/19
Abstract: A pressure damping device includes a cylinder, a partitioning section, a flow channel formation section, a valve section a bypass channel and a throttle section. The flow channel formation section forms a flow channel, through which the fluid flows, in conjunction with a movement of the partitioning section. The valve section controls a flow of the fluid in the flow channel of the flow channel formation section. The bypass channel forms a flow of the fluid that bypasses the flow of the fluid flowing through the flow channel while opening the valve section. The throttle section that throttles the flow of the fluid through the bypass channel further on an outer side than the valve section with respect to the flow channel formation section.
Abstract translation: 压力阻尼装置包括气缸，分隔部，流路形成部，阀部，旁通通道和节流部。 流动通道形成部分结合分隔部分的运动形成流体流过的流动通道。 阀部控制流路形成部的流路的流体流动。 旁路通道在打开阀部分的同时绕流体流动的流体的流动形成流体。 所述节流部分相对于所述流路形成部分在所述阀部分的外侧进一步节流所述流体通过所述旁通通道的流动。
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Patent Agency Ranking
公开(公告)号：US20160017950A1
公开(公告)日：2016-01-21
申请号：US14866353
申请日：2015-09-25
Applicant: Showa Corporation
Inventor： Gota NAKANO , Takashi TSUKAHARA
CPC classification number: F16F9/187 , B60G13/08 , F16F9/3257 , F16F9/3415
Abstract: A hydraulic damping device includes a cylinder 11, a cylinder 12, a piston 30 that partitions a space in the cylinder 11, a piston rod 20 that is connected to the piston 30, a bottom valve 40 that separates the interior of the cylinder 11 from a reservoir chamber R and has a communication passage of a liquid between the interior of the cylinder 11 and the reservoir chamber R, and a check valve mechanism 50 that is disposed in a radial direction of an area where movement of the piston 30 in the cylinder 11 is restricted or an area extended axially on an outer side of the cylinder 11, and permits a flow in one direction between the interior of the cylinder 11 and the reservoir chamber R caused by the movement of the piston 30 and restricts the flow in the other direction.
Abstract translation: 液压阻尼装置包括气缸11，气缸12，分隔气缸11中的空间的活塞30，连接到活塞30的活塞杆20，将气缸11的内部与气缸11分隔开的底阀40 蓄液室R并具有在气缸11的内部和储存室R之间的液体的连通通道，以及止回阀机构50，其设置在活塞30在气缸中的运动的区域的径向方向上 11被限制或在气缸11的外侧上轴向延伸的区域，并且允许在活塞30的运动引起的气缸11的内部和储存室R之间沿一个方向流动，并限制气缸 其他方向
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公开(公告)号：US20210102595A1
公开(公告)日：2021-04-08
申请号：US17074143
申请日：2020-10-19
Applicant: SHOWA CORPORATION
Inventor： Gota NAKANO , Chikara YANAGISAWA
IPC: F16F9/348
Abstract: A damping force generating mechanism includes: a flow passage formation part that forms a flow passage through which a liquid flows; and a valve that is configured to control a flow of the liquid in the flow passage. The flow passage formation part includes a first seat part that is provided radially outward of a flow passage port of the flow passage, protrudes from the flow passage port and contacts the valve, a second seat part that is provided radially outward of the first seat part, protrudes from the flow passage port and contacts the valve, and a circulation part having an orifice that allows the liquid to flow from the flow passage port toward the second seat part in a state in which the valve is in contact with the first seat part.
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公开(公告)号：US20190390731A1
公开(公告)日：2019-12-26
申请号：US16484031
申请日：2017-05-10
Applicant: Showa Corporation
Inventor： Gota NAKANO , Kazunari MAEDA , Hiroshi ENDO , Seiryo KONAKAI
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.
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公开(公告)号：US20170204932A1
公开(公告)日：2017-07-20
申请号：US15327879
申请日：2015-06-05
Applicant: Showa Corporation
Inventor： Gota NAKANO
CPC classification number: F16F9/516 , B60G13/08 , F16F9/185 , F16F9/3235 , F16F9/346 , F16F9/348 , F16F9/3488 , F16F9/46 , F16F9/461 , F16F2222/12 , F16F2232/08
Abstract: A hydraulic-pressure buffering device includes a cylinder, a piston unit provided movably in the cylinder to partition a space in the cylinder into a first oil chamber and a second oil chamber, an outer side piston unit fixed to a rod unit, an inner side piston unit provided movably relative to the outer side piston unit, a first channel that allows a flow of oil from the first oil chamber to the second oil chamber, a second channel that allows a flow of the oil from the second oil chamber to the first oil chamber, a compression side valve unit fixed to the inner side piston unit and brought into contact with the outer side piston unit, and an extension side valve unit fixed to the outer side piston unit and brought into contact with the inner side piston unit.
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公开(公告)号：US20170184245A1
公开(公告)日：2017-06-29
申请号：US15335008
申请日：2016-10-26
Applicant: Showa Corporation
Inventor： Gota NAKANO
IPC: F16L55/05
CPC classification number: F16L55/05 , F16F9/185 , F16F9/3235 , F16F9/3484
Abstract: One embodiment discloses a pressure buffer device, which includes a pipe-shaped member that stores fluid, and a partitioning member that is movably provided in the pipe-shaped member to partition its space into a first space and a second space. The pressure buffer device further includes a fluid reservoir portion that is arranged at the a radial outer side of the pipe-shaped member to store fluid, and a communication path that is arranged at a radial outer side of the fluid reservoir portion to communicate between the first space and the second space.
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