An opening and closing device for a roll-type invisible screen window

Abstract

The invention relates to the technical field of winding roller type fly gauze windows, in particular to an opening and closing device for a winding drum type invisible gauze window. An invisible gauze lead-out device comprises a rotary handle, gears and a reel. A linkage device comprises pulleys, a wire connector and steel wire ropes. An invisible gauze assembly device comprises a gauze pull rod, and the gauze pull rod is connected with gauze. The rotary handle is connected with the gears. The gears are connected with the reel. The steel wire ropes are wound around the reel. The steel wire ropes extend out of the tail end and the head end of the invisible gauze lead-out device respectively and are connected with the two ends of the gauze pull rod through the pulleys, wherein the multiple steel wire ropes at one end are provided with the wire connector and are combined together through the wire connector so that vertical stress of the invisible pull rod can be uniform and vertical movement of the invisible pull rod can be guaranteed; at the moment, the invisible gauze is in a tightened state and can not deform under the wind action; consequently, the problems that the invisible gauze is inclined, gets stuck, trips and the like because of unbalanced stress points when the invisible gauze is led out due to different specifications of the invisible gauze, different elevations and operators with different heights in the industry are solved.

Description

[technical field] [0001] The invention relates to the technical field of roll-type fly-proof screens, in particular to an opening and closing device for roll-type invisible screens. [Background technique] [0002] The invisible screen window is a screen window whose gauze can be automatically rolled back, and its main function is to ventilate and prevent mosquitoes. The frame of the invisible screen window is a structure that is tightly attached to the window frame. When in use, the gauze net is pulled down, and the gauze net will automatically roll back into the net box when not in use. Invisible screens can be divided into three categories according to the way of use: roll-type invisible screens, folding invisible screens and magnetic stickers invisible screens. [0003] Among them, the working principle of the reel-type hidden yarn structure is to store the gauze net through the reel. Its opening method is manual or electric or chain beads, and the opening direction can...

AI Technical Summary

Problems solved by technology

[0004] The content of the present invention is to solve the deficiencies and defects of the prior art, such as inclination, stagnation, yarn jumping, etc. caused by uneven stress points during use of the reel-type invisible screen window, and to provide a reel-type invisible screen window. The opening and closing device includes a hidden yarn drawing device, and the hidden yarn drawing device is connected to the hidden yarn assembly device through a linkage device. It is characterized in that the hidden yarn drawing device 5 includes a handle, a gear, and a winding wheel. The linkage The device includes a pulley 3, a connector, and a steel wire rope 2. The hidden yarn assembly device 1 includes a gauze pull rod, and the gauze pull rod is connected to the gauze; the handle is connected to a gear, and the gear is connected to a winding wheel. A steel wire rope is wound on the reel, and the steel wire rope extends from the head and tail ends of the hidden yarn drawing device respectively and connects the two ends of the gauze pull rod through the pulley. The wire rope at one end is provided with a connector 4. Combined into one through the connector, so that the upper and lower forces of the hidden yarn rod are uniform, which can ensure its vertical movement. At this time, the hidden yarn is in a tight state and will not be deformed under the action of wind.

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