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Title:
OPENING AND CLOSING BRAKING DEVICE
Document Type and Number:
Japanese Patent JP3966842
Kind Code:
B2
Abstract:

PROBLEM TO BE SOLVED: To provide an opening and closing braking device usable over a wide range, and superior in durability, without applying a large load to a shaft body, even in use in a rigidity requiring place, without using the shaft body as a component of a damper.
SOLUTION: An annular groove part 6b having the prescribed depth is formed in a rotary body 6; a wall surface 6d of the annular groove part 6b is sealed by a second projection strip ring part 17f formed on the inner periphery of a rotor 17 installed in the annular groove part 6b; a wall surface 6c of the annular groove part 6b is sealed by a first projection strip ring part 17c formed on the outer periphery of the rotor 17, and grease 18 is sealed inside. When rotating the rotary body 6 by engaging the rotor 17 with a support 2, since rotation of the rotor 17 is regulated, the rotary body 6 is braked by fluid resistance of the grease 18, and gently rotates. The rotary body 6 is supported by a support shaft inserted into a shaft hole 6a.


Inventors:
Tomoko Watanabe
Tetsuji Hirano
Application Number:
JP2003300110A
Publication Date:
August 29, 2007
Filing Date:
August 25, 2003
Export Citation:
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Assignee:
Piolux Co., Ltd.
International Classes:
E05F3/14; F16C11/04; B60R7/06; B60R7/10; F16D57/00; F16F9/12; (IPC1-7): E05F3/14; F16D57/00; F16F9/12
Domestic Patent References:
JP2003028130A
JP2003019847A
JP59100128U
Attorney, Agent or Firm:
Shigeru Matsui