Title:
POWER GENERATING MACHINE FOR HYDRAULIC SYSTEM
Document Type and Number:
Japanese Patent JP3478087
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a power generating machine for a hydraulic system with miniaturized and reduced weight construction and improved durability.
SOLUTION: A hydraulic pump 3 and an air cylinder 2 are arranged in series, a piston 4 is inserted into the cylinder head part 7 of the air cylinder 2, and at the cylinder head part 7, a piston control mechanism P for supplying and exhausting compressed air to and from a chamber 6 is provided. A cylindrical hole 33 is opened in the hydraulic pump 3 side wall face of the air cylinder 2, and the portion on the hydraulic pump 3 side of the cylindrical hole 33 is used as a pressurizing chamber 34 for oil pressure. The front end part of the piston rod 5 is held in the cylindrical hole 33, a ring-like damper 31 is arranged at the opening-edge part of the cylindrical hole 33, and the portion adjacent to the piston rod 5 of the damper 31 is projected. The inclined surface of the outer periphery of a projected part 31a of the damper 31 is smoothly curved into an S-shape, and a ring-like washer 35 which is curved along the curve of the inclined surface, is allowed to abut on the inclined surface. A coil spring 36 is arranged between the washer 35 and the piston 4, and the piston 4 is energized by the coil spring 36 in the direction in which the piston departs from the hydraulic pump 3.
Inventors:
Yasuhiro Naito
Application Number:
JP28349697A
Publication Date:
December 10, 2003
Filing Date:
October 16, 1997
Export Citation:
Assignee:
Max Co., Ltd.
International Classes:
B25F5/00; F01B7/20; F15B3/00; (IPC1-7): F15B3/00; B25F5/00; F01B7/20
Domestic Patent References:
| JP8207806A | ||||
| JP8175377A | ||||
| JP63106401A | ||||
| JP59175960A | ||||
| JP58184278U | ||||
| JP4724586U |
Attorney, Agent or Firm:
Tamio Nishiwaki