Title:
HYDRAULIC ROTATION SPEED REDUCTION DEVICE
Document Type and Number:
Japanese Patent JP3286815
Kind Code:
B2
Abstract:
PURPOSE: To reduce the wearing of sliding portions due to the rotation of a rotary shaft in a hydraulic rotation speed reduction device.
CONSTITUTION: A hydraulic rotation speed reduction device comprises a plurality of sliding plates 21 and 21 arranged between the side end face 7a of the seal member of a rotary shaft 7 and the internal end face 6a of a seal member 6 and between the closed end side end face 7b of the rotary shaft 7 and the closed internal end face 2a of a cylinder 3 respectively. The direct sliding of the internal end face 6a of the seal member 6, the closed internal end face 2a of the cylinder 3, and both end faces 7a and 7b of the rotary shaft 7 is eliminated by making the sliding plates 21 and 21 slide to each other by rotating the rotary shaft 7. This constitution can reduce the wearing of them.
Inventors:
Shinjiro Miyahara
Application Number:
JP31451792A
Publication Date:
May 27, 2002
Filing Date:
November 25, 1992
Export Citation:
Assignee:
Matsushita Electric Industrial Co., Ltd
International Classes:
A47K13/10; A47K13/12; F16D57/02; F16D57/06; F16F9/14; (IPC1-7): F16D57/02; A47K13/10; A47K13/12; F16D57/06; F16F9/14
Domestic Patent References:
| JP552228A | ||||
| JP5263847A |
Attorney, Agent or Firm:
Shigetaka Awano