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公开(公告)号：US11035387B2
公开(公告)日：2021-06-15
申请号：US16491125
申请日：2018-03-13
发明人： Tatsuhiro Arikawa
IPC分类号： F15B3/00
摘要： Fluid equipment includes a container configured for having first and second fluids therein, a first fluid outlet/inlet path provided for outflow and inflow of the first fluid, a second fluid outlet/inlet path for outflow and inflow of the second fluid, and a member configured for moving in the container in response to pressure of the first fluid, the fluid equipment transmitting energy from the first to the second fluid. A first bellows is configured such that one end is closed in a sealed state by the moving member, the other end is fixed to an inner surface part of the container in a sealed state, and the inside of the first bellows communicates with the first fluid outlet/outlet path.
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公开(公告)号：US10378649B2
公开(公告)日：2019-08-13
申请号：US15517496
申请日：2015-10-28
发明人： Koji Sato , Kuniaki Miyake , Tatsuhiro Arikawa
摘要： An impact on the tips of peaks of a metal bellows on contact is reduced, and deformation of the tips of the peaks even on contact is reduced to a minimum. In a free length state of a metal bellows 10 in an early stage of incorporation without extension and contraction, valleys each turn around in a U shape in cross section, peaks each turn around in an arc shape in cross section, the peaks are each provided in a position offset with respect to the center of a pitch between valleys adjacent to the peaks on both sides, and of bellies connected to the peaks on both sides, at least bellies located on the offset side are provided with a constriction protruding inward of the metal bellows.
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公开(公告)号：US10273979B2
公开(公告)日：2019-04-30
申请号：US15563432
申请日：2016-03-28
摘要： An accumulator is provided, which is aimed at stabilization in mounting state of a damping member while diminishing the impact on a metal bellows. In an accumulator (100), a damping member (190) formed slidably at the inner circumferential surface of a pressure vessel (110) and suppressing the oscillation of a metal bellows (130) while keeping a gap between the metal bellows (130) and the inner circumferential surface of the pressure vessel (110) is mounted at at least one site of a plurality of annular valley parts of the metal bellows(130) including a plurality of annular crest parts and the plurality of annular valley parts alternately formed therein. In the damping member (190), a radially inward tip is fitted with the valley part, and a radially outward tip is longer than the crest part of the metal bellows radially and outwardly.
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公开(公告)号：US10927855B2
公开(公告)日：2021-02-23
申请号：US16480653
申请日：2018-01-24
发明人： Tatsuhiro Arikawa
摘要： An accumulator includes a housing having a sealing face and a fluid inlet/outlet passage, a bellows fixed at least one end to the housing such that an inner space of the housing is hermetically partitioned by the bellows into an interior and an exterior of the bellows, the bellows including a bellows main body capable of expanding and contracting and a bellows cap including an annular seal holder, and a sealing member formed by covering a disc-shaped substrate with an elastic body that is opposed to and capable of being closely attached to the sealing face of the housing, the sealing member is held by a holding portion of the annular seal holder on an inner diameter side of the annular seal holder, the fluid inlet/outlet passage of the housing being closed upon a close attachment of the elastic body to the sealing face.
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公开(公告)号：US10900568B2
公开(公告)日：2021-01-26
申请号：US16092186
申请日：2017-05-09
发明人： Tatsuhiro Arikawa
摘要： A seal structure is provided which enables a reduction in the number of components and an improvement of the stability in sliding of the seal portion or the backup ring portion. A sealing structure seals two members which move relative to each other, in which a seal portion or a backup ring portion placed between the two members and a bearing portion similarly placed between the two members are formed into an integral structure. The seal portion or the backup ring portion is integrally provided to one end portion in the axial direction or both end portions in the axial direction of the bearing portion having a cylindrical shape. The seal structure is used as a piston seal or a rod seal in hydraulic and pneumatic devices in which a piston is inserted into a shell or a cylinder tube.
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公开(公告)号：US10539161B2
公开(公告)日：2020-01-21
申请号：US15769649
申请日：2016-10-14
发明人： Tatsuhiro Arikawa
IPC分类号： F16L55/04 , F15B1/10 , F16L55/053
摘要： An accumulator capable of suppressing collision of a metal bellows with a pressure vessel. A partition unit 300 includes: a tubular metal bellows 310, one end of which is side fixed to a pressure vessel 200 and which expands and contracts according to pressure in a fluid chamber and pressure in a gas chamber; and a bellows cap 320 which is fixed to another end side of the metal bellows 310, the partition unit 300 further including: a seal member 330 which is provided between the bellows cap 320 and a port 221 and seals a working fluid on the side of the fluid chamber via the metal bellows 310 when the metal bellows 310 contracts; and a sliding unit 350 which is fixed to the bellows cap 320 and slides in an expansion/contraction direction of the metal bellows 310 relative to a stay 400.
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公开(公告)号：US10465718B2
公开(公告)日：2019-11-05
申请号：US15570937
申请日：2016-06-16
摘要： An accumulator has a pressure vessel, a partition portion comparting an internal space of the pressure vessel into a gas chamber having sealed gaseous matter and a liquid chamber having introduced liquid, and a bellows connected to the partition portion. The partition portion is provided with a bellows connection portion connected to the bellows, a seal arranged in a liquid chamber side of the bellows connection portion, and a seal retention portion fixed to the bellows connection portion and retains the seal. The seal retention portion is constructed by a leaf spring which is elastically deformable in a part thereof, and is structured by integrally forming a fixed portion fixed to the bellows connection portion, and a retention portion retaining the seal. Accordingly, the accumulator can reduce the number of parts of a pressure fluctuation absorbing mechanism, can be easily assembled, and can reduce a parts cost.
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公开(公告)号：US09416909B2
公开(公告)日：2016-08-16
申请号：US14783329
申请日：2014-05-26
发明人： Tatsuhiro Arikawa
CPC分类号： F16L55/24 , F15B1/08 , F15B2201/415 , F16B5/08
摘要： An accumulator (100) includes: a housing (110) having an injection opening (112b) into which pressure gas is injected. A gas plug (150) seals the pressure gas in the housing (110). The housing (110) includes: a concave portion to which the gas plug (150) is fitted, and to which the gas plug (150) is welded with the welding portion (151) being melted on its bottom surface (110a). An inclined surface (110c) that extends from an edge portion of the concave portion toward an outside of the housing (110) such that a distance from a center of the injection opening (112b) increases, and the gas plug (150) includes a flange (152) which makes contact with the inclined surface (110c).
摘要翻译： 蓄能器（100）包括：壳体（110），其具有注入压力气体的喷射开口（112b）。 气塞（150）密封壳体（110）中的压力气体。 所述壳体（110）包括：凹部，所述气塞（150）装配到所述凹部，并且所述气塞（150）与所述焊接部（151）在其底面（110a）上熔融地焊接在所述凹部上。 从所述凹部的边缘部朝向所述壳体（110）的外侧延伸的倾斜面（110c），使得距离所述喷射口（112b）的中心的距离增大，并且所述气塞（150）包括： 与斜面（110c）接触的凸缘（152）。
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公开(公告)号：US11047399B2
公开(公告)日：2021-06-29
申请号：US16605777
申请日：2018-04-27
发明人： Tatsuhiro Arikawa
摘要： Provided is an accumulator for easier maintenance of a metal bellows. The accumulator includes a housing having a shell provided with an opening portion and a disk-shaped base body to which one end of a metal bellows with an outside diameter smaller than the inside diameter of the opening portion is welded and fixed, the interior of the housing partitioned on the inside and outside of the metal bellows in a tightly closed manner, in which the base body is formed to have an outside diameter greater than the outside diameter of the metal bellows, and the base body is fixed detachably to the shell.
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公开(公告)号：US11022150B2
公开(公告)日：2021-06-01
申请号：US16477157
申请日：2018-01-26
发明人： Tatsuhiro Arikawa
IPC分类号： F16L55/04 , F15B1/02 , F15B1/10 , F16L55/053
摘要： An accumulator a housing having a sealing face and a fluid inlet/outlet passage; a bellows fixed at least one end to the housing such that an inner space of the housing such that an inner space of the housing is hermetically partitioned by the bellows into an interior and an exterior of the bellows, the bellows including a bellows main body capable of expanding and contracting and a bellows cap including an annular seal holder, and a sealing member formed by covering a disc-shaped substrate with an elastic body that is opposed to and capable of being closely attached to the sealing face of the housing. At least a center part of a surface of the substrate opposing the sealing face is a curved surface having an arc shape in a sectional view.
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