| 摘要 |
<p>The present invention relates to an automatic insect screen for a door which operates a rotation member on which a winding spring in a winding pipe and a control member connected to the rotation member by a gear drive method to control tension of the winding spring quickly and accurately, and exposes cross recesses disposed on both sides of the control member through control holes on a front, a rear, and a side surface of an upper rail bar to control the tension of the winding spring simply and easily by simply turning the cross recesses with a screw driver or the like to significantly improve a tension control function by applying a tension control device to an automatic insect screen for a door for the first time. A main purpose of the present invention is to provide the automatic insect screen for a door which operates the rotation member on which the winding spring in the winding pipe and the control member connected to the rotation member by the gear drive method to control the tension of the winding spring quickly and accurately. Another objective of the present invention is to provide the automatic insect screen for a door which exposes both cross recesses of the control member for controlling tension through the control holes on the front, the rear, and the side surface of the upper rail bar to control the tension of the winding spring simply and easily by simply turning the cross recesses with the screw driver or the like to apply the tension control device to the automatic insect screen for a door for the first time.</p> |
