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公开(公告)号：US10184540B2
公开(公告)日：2019-01-22
申请号：US15514327
申请日：2015-10-22
Applicant: KYB Corporation
Inventor： Takayuki Ogawa , Takuya Kouge
Abstract: Provided is a liquid pressure device having no dead band in generation of force and causing no contamination, the liquid pressure device including a bottom cap and a head cap welded to an outer tube, and a rod guide fastened to the head cap, and one end of a pipe is fit in the bottom cap and the other end of the pipe is fit in the rod guide, and the bottom cap and the rod guide sandwich a cylinder. Accordingly, the liquid pressure device of the present invention can add shaft force to the cylinder while supporting the pipe, an inside of which is isolated from a tank, by the bottom cap and the rod guide, and does not need to braze the pipe to the bottom cap. Therefore, the liquid pressure device of the present invention has no dead band in generation of force and causes no contamination.
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公开(公告)号：US10054183B2
公开(公告)日：2018-08-21
申请号：US15122732
申请日：2015-02-25
Applicant: KYB Corporation
Inventor： Takayuki Ogawa
CPC classification number: F16F9/34 , F16F9/185 , F16F9/32 , F16F9/36 , F16F9/43 , F16F9/437 , F16F2230/06
Abstract: A cylinder device includes a cylinder, an outer tube, a piston, a piston rod, a rod guide, a first common passage through which working oil that is supplied/discharged to/from a rod-side chamber passes, a pipe that forms a part of the first common passage and is provided in a reservoir tank, a pipe holder that is provided between the pipe and the rod guide and holds a first end of the pipe, and a plug that is provided on a side of the pipe holder opposite from the pipe and has a throttle passage allowing the first common passage to communicate with the reservoir tank.
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公开(公告)号：US10184581B2
公开(公告)日：2019-01-22
申请号：US15113967
申请日：2015-02-13
Applicant: KYB Corporation
Inventor： Takayuki Ogawa
Abstract: A relief valve includes: a case; a valve seat provided in a channel; a poppet valve that opens and closes the channel by being seated on and separated from the valve seat; a spring that biases, at a first end, the poppet valve in a direction in which the poppet valve is seated on the valve seat; an adjusting screw that is threaded into the case and changes, in accordance with a threaded depth, a distance between the valve seat and a bearing surface, which is in contact with a second end of the spring; and a positioning plate that has an engaging hole with which a projected portion of the adjusting screw is engaged such that relative rotation is not allowed and that restricts rotation of the adjusting screw by being fixed to an end surface of the case and by being brought into contact with the adjusting screw only at a side surface of the projected portion.
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公开(公告)号：US09945441B2
公开(公告)日：2018-04-17
申请号：US15124866
申请日：2015-10-08
Applicant: KYB Corporation
Inventor： Takayuki Ogawa
CPC classification number: F16F9/19 , B61F5/24 , F15B11/00 , F15B11/10 , F16F9/20 , F16F9/49 , F16F9/50 , F16F9/58 , F16F2222/12 , F16F2228/066 , F16F2230/22
Abstract: A cylinder device includes a recess provided on either one of the piston and the cylinder, the recess facing the other one of the piston and the cylinder; an extension-side discharge passage configured to permit only a flow of liquid from the extension-side chamber toward the recess; a compression-side discharge passage configured to permit only a flow of liquid from the compression-side chamber toward the recess; a tank-side discharge passage configured to allow the extension-side discharge passage and the compression-side discharge passage to communicate with the tank through the recess; an extension-side damping force generation passage configured to apply a resistance to a flow of liquid passing therethrough so as to exert a damping force during extension; and a compression-side damping force generation passage configured to apply a resistance to a flow of liquid passing therethrough so as to exert a damping force during contraction.
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