| 摘要 |
PURPOSE: An insect screen assembly for powering a windup spring and a roll drive unit thereof are provided to simplify the assembling process of a spring required for winding a screen around a roll. CONSTITUTION: An insect screen assembly for powering a windup spring comprises a cassette(100), an insect screen(200), a handle(300), rail units(400), a fixing unit, and a connecting rod(600). The cassette comprises a body(110), a roll(120), and drive units(140,150). The body has an inner space. The roll is accepted in the inner space. The drive units are formed in both ends of the body and have windup springs. The top end of the insect screen is wound around the roll, and the bottom end is fixed to the handle. Both ends of the insect screen are inserted into the rail units. The fixing unit is coupled to the handle. The connecting rod is coupled to the bottom end of the rail units. |
