| 摘要 |
PURPOSE: A worm internal gear and a hinge apparatus having an auto return and stop function are provided to enhance the durability of the hinge apparatus by preventing a load from being applied in the specific portion and to decide the location where a door is stopped individually by regulating the length of the screw shaft. CONSTITUTION: A hinge apparatus having an auto return and stop function using a worm internal gear comprises a screw shaft(110), a screw supporting shaft(150), a screw nut(120), a guide(130), an elastic member(160), and a fixing member(180). The screw shaft is arranged inside a housing(100) and fitted with a screw-shaped worm on the exterior. The screw supporting shaft is combined with the other end of the screw shaft and supports the screw shaft. The screw nut is equipped with an internal worm and rotates on the screw shaft while ascending and descending in the longitudinal direction of the housing. The screw nut is located on the screw supporting shaft when separated from the screw shaft. The guide makes the housing and the screw nut rotate together and the screw nut ascend or descend on the screw shaft. The elastic member makes contact with the bottom surface of the screw nut, and contracts by the lowering of the screw nut and expands to apply a restoring force to the screw nut. The fixing member seals the bottom of the housing, supports the screw supporting shaft, and fixes the elastic member.
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