Pulley-chute connection structure applied to anti-drop door window

Abstract

The invention discloses a pulley-chute connection structure applied to an anti-drop door window. The pulley-chute connection structure comprises a window frame and a window sash mounted in the window frame, wherein one or more pulley blocks are arranged at the upper end of the window sash; two or more pulleys are arranged on each pulley block; a chute comprises two or more slideways arranged in an up-down manner; the inner wall of the left side of at least one slideway is butted against the left side of at least one pulley, and the inner wall of the right side of at least one slideway is butted against the right side of at least one pulley, that is, at least two slideways are mutually staggered. Through analysis from the force bearing condition of each whole pulley block, the left side and the right side of the pulley block are propped against the inner wall of the chute, and no interval exists on the left side and the right side of the pulley block, so that the shaking phenomenon can be avoided; through analysis from each pulley, only one side of the pulley is propped against the inner wall, and a relatively large interval exists on the other side, so that rotating and sliding of the pulley are not influenced, due to the relatively large interval, the pulley can still slide smoothly even though the chute has larger deformation, and the use is very convenient.

Description

technical field [0001] The invention relates to a door and window structure, in particular to a connection structure of a pulley and a chute applied to an anti-falling door and window. Background technique [0002] The sliding sash of the traditional sliding door and window is that the wheels mounted on it are stuck on the convex track protruding from the glide path. The overlap between the wheel and the track is only 2.5-3mm, and there is no protective device beside it, so it is found in use that , due to the instantaneous negative pressure generated by the strong wind, the window sash will be lifted off the track and fall out of the window; in addition, when the door and window sash is opened or wiped, there is a risk that the door and window sash will fall off the track and fall out of the window. [0003] In order to solve the above problems, some manufacturers now assemble the pulley on the top of the window sash for some sliding doors and windows, and then hang the pu...

AI Technical Summary

Problems solved by technology

In order to ensure the smooth sliding of the pulley in the chute, there is a gap between the pulley and the inner wall of the chute. When the gap left is large, the entire window sash is easy to shake under the action of external force, not only making a "bang bang" noise, but also Long-term shaking can easily lead to the deformation of the window sash or the shattering of the door and window glass; When it is larger than the gap, the pulley will be stuck in the chute and cannot move, so that the entire window sash cannot be pushed and pulled, causing inconvenience in use

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