| 摘要 |
PURPOSE: An oil pressure supply apparatus is provided to easily form an oil pressure supply passage in an oil pressure supply and return cylinder using a single acting solenoid. CONSTITUTION: An oil pressure supply apparatus comprises a base(10), a single acting solenoid(20), an oil pressure supply and return cylinder(30), and a low pressure supply line(50). The base comprises a first oil passage(12) and a second oil passage(14). The single acting solenoid is installed on the upper side of the base to be connected to the first oil passage and turned on/off with switch operation. The oil pressure supply and return cylinder comprises a lower body(31) which is formed with an oil pressure supply and return path(40) connected to the second oil passage, an upper body(32), a bolt(33), a piston(34) which opens and closes an oil pressure supply hole(41) of the oil pressure supply and return path, a first spring(35), and a second spring(36). The low pressure supply line supplies low oil pressure to the upper space of the piston. |
