| 摘要 |
PURPOSE: A semiautomatic opening and shutting device for a sliding door is provided to reduce fuel costs and electric rates by automatically closing a door when the hands of a person are detached from the door. CONSTITUTION: A semiautomatic opening and shutting device for a sliding door is composed as follows. A guide bobbin(20) and a large gear(30) are integrally coupled to the top end of a fixed plate(10) to be simultaneously operated. A small gear(31) is coupled to the fixed plate to engage with the large gear. A middle gear(32) is coupled to the fixed plate to engage with the small gear. A speed reducer(40) is installed in the front of the middle gear. |
