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公开(公告)号：EP3623642A1
公开(公告)日：2020-03-18
申请号：EP18799120.3
申请日：2018-04-27
发明人： ARIKAWA, Tatsuhiro
IPC分类号： F15B1/14
摘要： Provided is an accumulator for easier maintenance of a metal bellows.
The accumulator 1 includes a housing 2 having a shell 4 provided with an opening portion 4a and a disk-shaped base body 5 to which one end 31a of a metal bellows 31 with an outside diameter D1 smaller than the inside diameter d4 of the opening portion 4a is welded and fixed, the interior of the housing 2 partitioned on the inside and outside of the metal bellows 31 in a tightly closed manner, in which the base body 5 is formed to have an outside diameter D3 greater than the outside diameter D1 of the metal bellows 31, and the base body 5 is fixed detachably to the shell 4.-
公开(公告)号：EP3217044B1
公开(公告)日：2020-02-19
申请号：EP15856671.1
申请日：2015-10-28
发明人： SATO, Koji , MIYAKE, Kuniaki , ARIKAWA, Tatsuhiro
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公开(公告)号：EP4317705A1
公开(公告)日：2024-02-07
申请号：EP22780187.5
申请日：2022-03-17
IPC分类号： F15B11/028 , F15B3/00
摘要： There is provided a fluid circuit capable of continuously driving a pressure-increasing device with a simple configuration. A first switching valve 8 that switches between flow passages 70 and 80 and first flow passages 80 and 81 according to a change in a fluid pressure to be applied, a second switching valve 130 that is switched to a flow passage which applies the fluid pressure to the first switching valve 8, when a piston 120 has reached an initial position or an end position, and second flow passages 123 and 125, are provided. A biasing force F S2 of a biasing member 140 when the piston 120 reaches the end position is smaller than a pressing force F H1 acting on the piston 120 due to the fluid pressure caused by a fluid supply device 6, and a biasing force F S1 of the biasing member 140 when the piston 120 reaches the initial position is larger than a sum of a flow passage resistance force R1 acting on the first flow passages 80 and 81 and a flow passage resistance force R2 acting on the second flow passages 123 and 125.
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公开(公告)号：EP4317704A1
公开(公告)日：2024-02-07
申请号：EP22780186.7
申请日：2022-03-17
IPC分类号： F15B1/02
摘要： There is provided a fluid circuit capable of stabilizing the flow of a working fluid flowing into an actuator. A fluid circuit includes: a fluid supply device 2 that delivers a working fluid; and an accumulator 6 that accumulates the working fluid which is increased in pressure. A variable throttle valve 9 and the accumulator 6 are disposed in a branch flow passage 60 branched from a main flow passage 20 extending from the fluid supply device 2 to an actuator 5. A first pressure detector 7 is provided between the variable throttle valve 9 and the accumulator 6, a second pressure detector 10 is provided in the branch flow passage 60 between the main flow passage 20 and the variable throttle valve 9, and the variable throttle valve 9 is controllable based on pressures PA and PB detected by the first pressure detector 7 and the second pressure detector 10. A check valve 8 is provided in the branch flow passage 60.
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公开(公告)号：EP3312434A1
公开(公告)日：2018-04-25
申请号：EP16814249.5
申请日：2016-06-16
IPC分类号： F15B1/10
摘要： The purpose of the present application is to provide an accumulator that can reduce the number of components in a pressure fluctuation absorbing mechanism, simplify assembly, and reduce component costs. An accumulator (1) comprises: a pressure vessel (2); a partitioning part (11) that partitions an internal space of the pressure vessel (2) into a gas chamber (9) that is filled with a gas and a liquid chamber (10) into which a liquid is introduced; and bellows (7) that are connected to the partitioning part (11). The partitioning part (11) comprises: a bellows connection part (12) that is connected to the bellows (7); a seal (15) that is disposed on a liquid-chamber-side of the bellows connection part (12); and a seal-holding part (14) that is fixed to the bellows connection part (12) and holds the seal (15). The seal-holding part (14) comprises a plate spring, part of which can elastically deform, and is configured such that a fixed part (17) that is fixed to the bellows connection part (12) and a holding part (16) that holds the seal are integrally formed.
摘要翻译： 本申请的目的是提供一种能够减少压力波动吸收机构中的部件数量，简化组装和降低部件成本的蓄能器。 蓄能器（1）包括：压力容器（2）; 分隔部（11），其将压力容器（2）的内部空间分隔成充满气体的气体室（9）和液体被引入其中的液体室（10）; 和连接到分隔部分（11）的波纹管（7）。 分隔部分（11）包括：波纹管连接部分（12），该波纹管连接部分连接到波纹管（7）; 密封件（15），其设置在波纹管连接部（12）的液室侧; 和固定于波纹管连接部（12）并保持密封件（15）的密封保持部（14）。 密封保持部（14）由板簧构成，该板簧的一部分能够弹性变形，并且构成为固定于波纹管连接部（12）的固定部（17）和保持部（16） 保持密封件一体形成。
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公开(公告)号：EP4317706A1
公开(公告)日：2024-02-07
申请号：EP22780188.3
申请日：2022-03-17
IPC分类号： F15B11/028 , F15B3/00
摘要： There is provided a fluid circuit capable of continuously driving a pressure-increasing device with a simple configuration. A first switching valve 8 that switches between flow passages 70 and 80 which allow communication between a first pressure-receiving chamber 10-3 and a fluid supply device 6 side and flow passages 70 and 82 which allow communication between a second pressure-receiving chamber 10-4 and the fluid supply device 6 side, according to a change in a fluid pressure to be applied, and a second switching valve 130 that is switched to flow passages 131 and 133 which apply the fluid pressure to the first switching valve 8, are provided. The second switching valve 130 includes return device 140, and is provided to be reciprocatable between an operation position to which the second switching valve 130 is moved by a stroke of a piston 120 and a return position to which the second switching valve 130 is moved by the return device 140. The piston 120 and the second switching valve 130 are movable independently of each other.
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公开(公告)号：EP3604822A1
公开(公告)日：2020-02-05
申请号：EP18770448.1
申请日：2018-03-13
发明人： ARIKAWA, Tatsuhiro
IPC分类号： F15B7/00
摘要： {Technical Problem} Provided is fluid equipment capable of enhancing operability of a moving member in a container.
{Solution to Problem} Fluid equipment 1 includes a container 2 capable of having first and second fluids F1, F2 housed therein, a first fluid outlet/inlet path 24 provided at the container 2 for outflow and inflow of the first fluid F1, a second fluid outlet/inlet path 26 provided at the container 2 for outflow and inflow of the second fluid F2, and a moving member 3 capable of moving in the container 2 in response to the pressure of the first fluid F1, the fluid equipment 1 transmitting energy from the first fluid F1 to the second fluid F2. The fluid equipment 1 further includes a first bellows 4 configured such that one end 4b is closed in a sealed state by the moving member 3, the other end 4a is fixed to an inner surface part of the container 2 in a sealed state, and the inside 40 of the first bellows 4 communicates with the first fluid outlet/inlet path 24.-
公开(公告)号：EP3217044A1
公开(公告)日：2017-09-13
申请号：EP15856671.1
申请日：2015-10-28
发明人： SATO, Koji , MIYAKE, Kuniaki , ARIKAWA, Tatsuhiro
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.
摘要翻译： 接触时金属波纹管尖端的冲击减小，并且甚至在接触时尖峰的变形减小到最小。 在没有伸缩的结合初期的金属波纹管10的自由长度状态下，谷的横截面呈U字状折回，横截面呈圆弧状的峰，分别设有峰 在相对于两侧的峰顶附近的谷间距的中心偏移的位置和与两侧的谷顶端连接的谷腹的位置偏移的位置，至少在偏移侧的腹部设置有向 金属波纹管。
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公开(公告)号：EP3312434B1
公开(公告)日：2020-02-12
申请号：EP16814249.5
申请日：2016-06-16
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公开(公告)号：EP3550156A1
公开(公告)日：2019-10-09
申请号：EP17875106.1
申请日：2017-11-10
IPC分类号： F15B1/10
摘要： A subject of the invention is to provide an accumulator in which a service life of a bellows is prolonged.
The accumulator 1 comprises a bellows 3 having a plurality of outer annular ridge portions 38, 38, ... and a plurality of inner annular ridge portions 39, 39, ... and configured to be capable of expanding and contracting, and a housing 2 having a fluid supply port 22a and fixed to one end of the bellows 3 serving as a fixed end 31A, an interior of the housing 2 being partitioned in a sealed state into an inside and an outside of the bellows 3. The outer annular ridge portions 38, 38, ... are divided into at least a first sector B1 and a second sector A1 which are distributed in an expansion and contraction direction of the bellows such that the second sector A1 is positioned between the first sector B1 and the fixed end 31A, the outer annular ridge portions 38, 38, ...included in the first sector B1 have an outer diameter OD2 smaller than an outer diameter OD1 of the outer annular ridge portions included in the second sector A1.
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