| 摘要 |
The present invention relates to an automatic window closing apparatus which includes: a button where a first hole is formed at the center and a bearing is formed on an inner circumferential surface; an operation shaft that is coupled at an upper end for the bearing to be able to be pivotable and has a worm gear formed in a lower portion; a worm that is engaged with the worm gear; an elastic member that is coupled with a lower end of the operation shaft and releases the engagement between the worm gear and the worm by being lowered when the button is operated; a sprocket that is formed in an upper portion of the operation shaft; a chain that is engaged with the sprocket and allows a window coupled with one end to be manually opened with the one end being withdrawn out of the apparatus when the button is pressed by a user; a bushing whose one side is pivotally coupled with the bearing and the other side is coupled with an upper end of the operation shaft; a detection unit that detects temperature change or smoke and then transmits a signal to a power supply unit in the event of a fire; the power supply unit that receives the signal from the detection unit and then supplies electric power to a motor; and the motor that is supplied the electric power from the power supply unit and then drives the worm to rotate, in which the elastic member is a spring whose diameter increases from an upper end to a lower end, and the button and the operation shaft are bolt-coupled. According to the present invention, only the bearing inside the button that is coupled with the operation shaft rotates when the button is operated for manual window opening. Accordingly, no pain is caused in the hands of the user operating the button. |
