Screen window pulley with adjustable height

Abstract

The invention relates to a screen window pulley with the adjustable height. The screen window pulley with the adjustable height comprises a fixing base and a pulley body connected with the fixing base. The fixing base and the pulley body are connected through a height adjusting assembly. The fixing base comprises a transverse fixing plate and a vertical fixing plate, and the transverse fixing plate and the vertical fixing plate are connected perpendicularly. The height adjusting assembly comprises a pulley holder, a lifting plate and a supporting plate. The lifting plate and the pulley holder are fixedly connected, and the lifting plate can move in the vertical direction along the vertical fixing plate. One end of the supporting plate is hinged to the pulley holder, and a hinged shaft is arranged at the other end of the supporting plate. A pair of lug plates is arranged on the transverse fixing plate, positioning holes are formed in the lug plates, and the hinged shaft is matched with the holes in the lug plates. The pulley is connected with the fixing base through the height adjusting assembly, the pulley holder of the pulley body is fixed to the lifting rod, the height of the pulley body is adjusted by adjusting the lifting rod, and meanwhile the pulley holder is connected with the lug plates on the transverse fixing plate through the supporting plate; and the structural stability of the pulley body is good, the service life is long, and the installation difficulty of a screen window is reduced.

Description

technical field [0001] The invention relates to the field of door and window accessories, in particular to a pulley installed under a screen window for reducing friction between a screen window frame and a window frame. Background technique [0002] The window is an important component of the building, and the setting of the window plays the purpose of facilitating ventilation, ventilating, and adjusting light. Especially in the hot summer, regularly open the windows for ventilation, which is conducive to indoor air convection and plays a role in cooling down. But when the sash of the window is opened, outdoor mosquitoes, dust, etc. can easily enter the room. Especially after mosquitoes enter the room, mosquitoes bite people, which not only affects life, but also has the risk of infectious diseases. To avoid mosquitoes entering the room through open windows or dust entering the room. People put screens on the windows. There are many screens, including invisible screens, ...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the deficiencies in the prior art, the present invention provides a height-adjustable screen window pulley, which is installed at the bottom of the screen window, which not only reduces the friction between the screen window and the chute, but also solves the problem of screen window installation. It is not easy to fall off after installation, which improves the safety and stability of the screen window

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