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Title:
POWER GENERATING MACHINE FOR HYDRAULIC SYSTEM
Document Type and Number:
Japanese Patent JPH11117905
Kind Code:
A
Abstract:

To provide a power generating machine for a hydraulic system with miniaturized and reduced weight construction and improved durability.

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:
NAITO YASUHIRO
Application Number:
JP1997000283496
Publication Date:
April 27, 1999
Filing Date:
October 16, 1997
Export Citation:
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Assignee:
MAX CO LTD
International Classes:
B25F5/00; F01B7/20; F15B3/00; (IPC1-7): F15B3/00; B25F5/00; F01B7/20
Attorney, Agent or Firm:
西脇 民雄



 
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