发明公开
- 专利标题: HYDRAULIC DEVICE
- 专利标题(中): 液压装置
-
申请号: EP04716710.1申请日: 2004-03-03
-
公开(公告)号: EP1600641A1公开(公告)日: 2005-11-30
- 发明人: YOGO, Teruaki, c/o Kabushiki Kaisha Opton
- 申请人: Kabushiki Kaisha Opton
- 申请人地址: 3-24, Akatsuki-cho, Seto-shi Aichi 489-8645 JP
- 专利权人: Kabushiki Kaisha Opton
- 当前专利权人: Kabushiki Kaisha Opton
- 当前专利权人地址: 3-24, Akatsuki-cho, Seto-shi Aichi 489-8645 JP
- 代理机构: Liesegang, Eva
- 优先权: JP2003056259 20030303
- 国际公布: WO2004085855 20041007
- 主分类号: F15B11/02
- IPC分类号: F15B11/02
摘要:
A fluid pressure apparatus capable of achieving stable pressing is obtained. The fluid pressure apparatus comprises a fluid pressure pump (1) driven by an electric motor (6) and rotatable in both directions. Both ports (14, 16) of a fluid pressure cylinder (12) are respectively connected to both ports (2, 4) of the fluid pressure pump (1) via a pair of flow paths (8, 10). A throttle (32) is disposed on a leak flow path (30) which communicates a high pressure side with a low pressure side of the pair of flow paths (8, 10), while the pressing operation is performed by a fluid pressure cylinder (12). Furthermore, the fluid pressure apparatus comprises a position control circuit (38) for controlling the electric motor (6) based on a position detected by a movement detection sensor (34) for detecting movement by the fluid pressure cylinder (12), a pressure control circuit (40) for controlling the electric motor (6) based on pressure in the flow path (10) on the high pressure side detected by the pressure sensor (36), and a switch circuit (42) for switching control by the poison control circuit (38) to control by the pressure control circuit (40).
信息查询