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公开(公告)号：US20180266445A1
公开(公告)日：2018-09-20
申请号：US15921973
申请日：2018-03-15
发明人： Shigehiro ARAI
CPC分类号： F15B3/00 , B21D22/205 , B21D22/22 , B21D24/005 , B21D28/005 , B30B1/38 , B30B15/165
摘要： A pneumatic chamber 20 is configured to include a first pneumatic chamber 21 pressurizing a first piston 11 and a second pneumatic chamber 22 pressurizing a second piston 12. The first pneumatic chamber 21 and the second pneumatic chamber 22 communicate with each other through a communication hole 87 formed via the inside of a retaining bolt 17. The second pneumatic chamber 22 is formed in a hydraulic pressure generating unit 55 moving in a thrust direction in a cylinder 2 and is separable from the first pneumatic chamber 21. In addition, the communication hole 87 is also separated into a communication hole 87a and a communication hole 87b with the corresponding separation, a rod portion 50 of the first piston 11 is also separated into a rod portion 50a and a rod portion 50b, and the communication hole 87b and the rod portion 50b are formed to be movable along with the hydraulic pressure generating unit 55 in the thrust direction.
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公开(公告)号：US20180266446A1
公开(公告)日：2018-09-20
申请号：US15921981
申请日：2018-03-15
发明人： Shigehiro ARAI
CPC分类号： F15B3/00 , B21D22/205 , B21D22/22 , B21D24/005 , B21D28/002 , B30B1/32 , B30B1/38 , B30B15/165
摘要： A pneumatic chamber 20 is configured to include a first pneumatic chamber 21 pressurizing a first piston 11 and a second pneumatic chamber 22 pressurizing a second piston 12. The first pneumatic chamber 21 communicates with the second pneumatic chamber 22. The hydraulic pressure generating unit 55 is internally provided with a hydraulic chamber 30, and the hydraulic chamber 30 is configured to have a first hydraulic chamber 31 pressurized by the first pneumatic chamber 21 via the first piston 11 and a second hydraulic chamber 32 pressurized by the second pneumatic chamber 22 via the second piston 12. The hydraulic pressure generating unit 55 is movable in a thrust direction in a cylinder 2, and the second hydraulic chamber 32 has a function of fixing the moving hydraulic pressure generating unit 55 in the cylinder 2 by causing a thin portion 15 to be elastically deformed in a radial direction due to hydraulic pressure. The first hydraulic chamber 31 outputs hydraulic pressure of the first hydraulic chamber 31, which is increased by the fixing, to an output rod 7.
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公开(公告)号：US20180172029A1
公开(公告)日：2018-06-21
申请号：US15848950
申请日：2017-12-20
发明人： Shigehiro ARAI
IPC分类号： F15B3/00 , F15B11/072 , F15B11/032
CPC分类号： F15B3/00 , F15B11/032 , F15B11/0325 , F15B11/0725 , F15B2211/216 , F15B2211/71
摘要： An inner cylinder inside an outer cylinder is disposed to be coaxial to an air pressure supply rod inside the inner cylinder. A first piston is disposed between the air pressure supply rod and the inner cylinder, a pneumatic chamber is disposed on a side of one surface (hydraulic surface) of the first piston in the inner cylinder, and a first hydraulic chamber is disposed on a side of the other surface. A second piston is disposed between the outer cylinder and the inner cylinder, and a second hydraulic chamber is disposed on a side of a surface of the second piston which is provided in the same direction as the hydraulic surface of the first piston in both of the cylinders. The inner cylinder is provided with a communication hole for transmitting a negative pressure along with movement of oil with which the first hydraulic chamber and the second hydraulic chamber are filled. In this configuration, it is possible to shorten an overall length of a fluid pressure cylinder.
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公开(公告)号：US20200096014A1
公开(公告)日：2020-03-26
申请号：US16582869
申请日：2019-09-25
发明人： Shigehiro ARAI
IPC分类号： F15B11/072 , B30B15/00 , B25B1/18 , F15B9/16
摘要： By setting an outer circumferential surface of a second hydraulic chamber of a cylinder device to be a thin portion, hydraulic pressure increases by receiving air pressure from the second pneumatic chamber, and the thin portion expands to clamp a cylinder. Then, by the increase of the second hydraulic chamber, expansion of the thin portion in an axial direction is suppressed and the thin portion expands in a radial direction, and thus, as means for suppressing expansion in the axial direction, the thin portion is fixed from both end sides thereof with an expansion stop bolt. The expansion stop bolt fixes a lid and a lid disposed so as to sandwich pressed portions on both end sides of the thin portion or both ends of the thin portion. Further, in order to prevent the thin portion from being shrunk by tightening with the expansion stop bolt, a spacer is disposed between the pressed portions on both end sides of the thin portion.
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公开(公告)号：US20180264603A1
公开(公告)日：2018-09-20
申请号：US15919732
申请日：2018-03-13
发明人： Shigehiro ARAI
IPC分类号： B23P19/027 , F15B3/00
摘要： A pneumatic chamber 20 is configured to include a first pneumatic chamber 21 pressurizing a first piston 11 and a second pneumatic chamber 22 pressurizing a second piston 12. The first pneumatic chamber 21 communicates with the second pneumatic chamber 22. The hydraulic pressure generating unit 55 is internally provided with a hydraulic chamber 30, and the hydraulic chamber 30 is configured to have a first hydraulic chamber 31 pressurized by the first pneumatic chamber 21 via the first piston 11 and a second hydraulic chamber 32 pressurized by the second pneumatic chamber 22 via the second piston 12. The hydraulic pressure generating unit 55 is movable in a thrust direction in a cylinder 2, and the second hydraulic chamber 32 has a function of fixing the moving hydraulic pressure generating unit 55 in the cylinder 2 by causing a thin portion 15 to be elastically deformed in a radial direction due to hydraulic pressure. The first hydraulic chamber 31 outputs hydraulic pressure of the first hydraulic chamber 31, which is increased by the fixing, to an output rod 7.
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