Expandable door and window corner connector

Abstract

The invention provides an expandable door and window corner connector. The expandable door and window corner connector comprises a first expansion column, a second expansion column, an external corner connector base body, an internal corner connector base body, a first circular-arc-shaped groove, a second circular-arc-shaped groove, a first expansion pin, a second expansion pin, a first round hole and a second round hole, and is characterized in that a cavity of the external corner connector base body is tightly fitted to a lug boss of the internal corner connector base body; the first expansion column and the second expansion column of the external corner connector base body are overlapped with the circular-arc surfaces of the first circular-arc-shaped groove and the second circular-arc-shaped groove; the first expansion pin and the second expansion pin are mounted in the first expansion column and the second expansion column through the first round hole and the second round hole in the external corner connector base body and are overlapped with the outer surface of the external corner connector base body. When corners of a door and window frame are assembled, the door and window corner connector can be automatically expanded to fully fill a cavity of a door and window sectional material and a gap between the door and window corner connector and the door and window sectional material can be eliminated, so that the strength and flatness of corner parts of the door and window frame are guaranteed; and the expandable door and window corner connector can also be suitable for door and window sectional materials with small change of sizes of cavities and has a plurality of functions.

Description

Technical field: [0001] The invention relates to the field of doors and windows, in particular to an expandable corner code for doors and windows. Background technique: [0002] Door and window corners are used to assemble corners of door and window frames to ensure the strength and flatness of the formed corners of door and window frames. The current door and window corners usually use fixed corners. The size of the corresponding door and window profile cavity needs to match. It is often encountered that the door and window corner code does not match the size of the door and window profile cavity, resulting in a gap between the door and window profile cavity and the corner code, resulting in the corner of the door and window frame formed Misalignment will affect the flatness of the corners of doors and windows, and when there is a slight change in the size of the cavity of the door and window profiles, it is necessary to redesign and process the corners of the doors and win...

AI Technical Summary

Problems solved by technology

[0002] Door and window corners are used to assemble corners of door and window frames to ensure the strength and flatness of the corners of the formed door and window frames. The current door and window corners usually use fixed corners. The size of the corresponding door and window profile cavity needs to be matched. It is often encountered that the door and window corner code does not match the size of the door and window profile cavity, resulting in a gap between the door and window profile cavity and the corner code, resulting in the corner of the door and window frame formed Misalignment will affect the flatness of the corners of doors and windows, and when there is a slight change in the size of the door and window profile cavity, it is necessary to redesign and process the door and window corners

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