Title:
FREE STOP DOOR HINGE CLOSER
Document Type and Number:
Japanese Patent JP2014167240
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a door hinge closer having a main coil spring and an auxiliary coil spring, enabling a free stop.SOLUTION: A door hinge 100 in which a first coil spring 130 is set in a first cylindrical body 110, and a second coil spring 134 is set in a second cylindrical body 220, includes first and second clutch mechanisms for setting and releasing rotational energization force of the respective coil springs. The first clutch mechanism locks a first spring locking member 170 having the other end of the first coil spring locked thereto to a shaft 150 when a relative rotation position between the first cylindrical body and the second cylindrical body is smaller than a first rotation position, and locks the member to the second cylindrical body when being larger than the first rotation position. The second clutch mechanism locks a second spring locking member 190 having one end of the second coil spring locked thereto to the second cylindrical body when the relative rotation position is smaller than a second rotation position, and locks the member to the shaft when being larger than the second rotation position.
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Inventors:
OKADA MASASHI
Application Number:
JP2013039871A
Publication Date:
September 11, 2014
Filing Date:
February 28, 2013
Export Citation:
Assignee:
NITTO KOHKI CO
International Classes:
E05D5/12; E05D3/02; E05D11/06
Domestic Patent References:
| JPS5234841Y1 | 1977-08-09 | |||
| JPS5616782A | 1981-02-18 | |||
| JP2005127013A | 2005-05-19 |
Attorney, Agent or Firm:
Shigeru Ito
Yusuke Ebi
Yusuke Ebi