| 摘要 |
PROBLEM TO BE SOLVED: To provide a door which can be lightly opened/closed as in the case of a door with no spring by preventing a spring force from being exerted on the door, even if the built-in spring is extended along with the opening of the door, which is put into a temporarily stopped state along with speed reduction immediately before the closing of the door and locked with a strong force, and which is not suddenly moved even if a strong wind blows. SOLUTION: An upper portion of the door is pulled; a wheel is mounted at the leading end of an arm; and the spring for storing a closing force even if a person's hand is unlinked in the opening of the door is built in the door. Thus, the wheel is greatly moved along a sliding surface, and the door is opened/closed with a slight force and hardly moved with a sudden force. A speed is reduced by attaching a brake, working only in the closing of the door, to the wheel, and another locking spring is added. COPYRIGHT: (C)2009,JPO&INPIT
|
