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Title:
HYDRAULIC ROTARY DECELERATING DEVICE
Document Type and Number:
Japanese Patent JP3083400
Kind Code:
B2
Abstract:

PURPOSE: To miniaturize a hydraulic rotary decelerating device by providing inside a cylinder a partition wall which axially divides the inside of the cylinder into two parts and another partition wall which divides each of the two parts into two semicircular parts, and arranging first and second rotary shafts in parallel and concentric with each other that pass through the inside of the cylinder, and coupling the rotary shafts of a closet seat and a closet lid to each other.
CONSTITUTION: A cylinder 16 has a partition wall 20 at almost the center of its axis and a first rotary shaft 17 passes through the cylinder 16 and a second rotary shaft 18 is provided concentric with the first rotary shaft 17. The cylinder 16 has a partition wall 16a as its inner wall and a second hydraulic chamber 25 formed by dividing the cylinder 16 into two parts by the first rotary shaft 17 is filled with control oil. The first rotary shaft divides the second hydraulic chamber 25 into two of pressurization and decompression chambers 25a, b by means of a radially projecting control wall 22b having a communicating passage 23b and by a control valve 19b. The control valve 19b contacts at its outer surface with the inner peripheral surface of the cylinder 16 with its inner surface facing the control wall 22b and a control opening 24b is provided through the decompression chamber 25b side of the valve 19b. The second rotary shaft 18 has similar constitution. When the first and second rotary shafts 17, 18 to which a closet seat and a lid are coupled are rotated, control oil in the pressurization and decompression chambers is controlled by changes in the positions of the control walls 22a, b and the control valves 19a, b relative to one another.


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Inventors:
Shinjiro Miyahara
Application Number:
JP10419492A
Publication Date:
September 04, 2000
Filing Date:
April 23, 1992
Export Citation:
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Assignee:
Matsushita Electric Industrial Co., Ltd
Tok Bearing Co., Ltd.
International Classes:
A47K13/10; E05F3/14; F16C3/03; F16D57/02; F16F9/14; F16F9/48; (IPC1-7): F16F9/14; A47K13/10; E05F3/14
Domestic Patent References:
JP6313927A
JP2190634A
JP4282039A
JP355796U
JP547567U
Attorney, Agent or Firm:
Fumio Iwahashi (2 others)