| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To turn a door roller for a screen door to a simple structure with a smaller number of components than before, and to improve usability. <P>SOLUTION: An attaching frame 22 fixed to the screen door and a wheel support frame 23 supporting a wheel 21 are connected to be freely stretchable and contractible by a coil spring 27. Also, an adjusting screw 28 for positioning and adjusting the position of the wheel support frame 23, and a lock lever 45 for locking the wheel support frame 23 at a shortened position are provided. An operator 46 of the lock lever 45 is arranged freely movably to a lock position and an unlock position at such a position that it is visible and operable from the outside of an upper surface of an upper wall 25 of the attaching frame 22, and the adjusting screw 28 is made to also serve a function as a lever locking member for locking the operator 46 at the lock position. <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |
