| 摘要 |
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. |
