SIMPLE OPENING/CLOSING APPARATUS USING SPRING AND PROVIDED WITH BOTH OF SIMPLICITY AND CERTAINTY OF OPENING /CLOSING

摘要

PROBLEM TO BE SOLVED: To provide a simple opening/closing apparatus using a spring and provided with both of simplicity and certainty of opening or closing. SOLUTION: A clip 1 is attached on one end and a clip 2 is attached on another end. A spring 5 is rotated and wound up at a same time when a gear 19 is rotated by rotating a gear knob 3. A spring winding type rotating wheel is rotated by rotation of the gear 19. A string 6 connected to the clip is wound around the string winding type rotating wheel and is contracted by rotation of the string winding type rotating wheel. The string 6 gets in a shortened state by a gear lock 7 to surely close. The gear lock 7 is released by pushing a lever 4. The contracted spring 5 automatically rotates in reverse and the string 6 connected to the clip is extended to automatically open.