Corner Connector With Oblique Clamping for Biaxial Profile Fixation
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Solution Overview
Problem
Existing corner connectors for hollow chamber profiles in windows and doors provide insufficient bracing in both transverse and longitudinal directions, leading to potential instability and misalignment.
Innovation Solution
A corner connector design featuring a rigid clamping body with oblique relative movement, pressing against both inner transverse and longitudinal surfaces, utilizing a wedge and counter-wedge structure for secure clamping without perpendicular or resilient elements, ensuring biaxial fixation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a clamping body with perpendicular clamping surfaces is used, then clamping force is concentrated in one direction, but bracing in both transverse and longitudinal directions is insufficient
Solution Approach 1:
The clamping body is designed with an asymmetric oblique clamping surface instead of perpendicular surfaces. This oblique surface is angled relative to both the transverse and longitudinal axes, enabling the single clamping action to generate stabilizing forces in both directions simultaneously, thus resolving the contradiction between concentrated clamping force and insufficient bracing stability.
2Reliability
If resilient expansion elements are used for clamping, then adaptive clamping is achieved, but device complexity increases
Solution Approach 1:
The invention extracts and eliminates the resilient expansion elements from the clamping mechanism. Instead of using complex resilient elements that require insertion and expansion actions, the patent employs a simple rigid clamping body with oblique surfaces that achieves adaptive clamping through geometric interaction with the hollow chamber profile walls, thereby reducing device complexity while maintaining reliability.
Solution Approach 2:
The oblique clamping surface of the rigid clamping body automatically adapts to the hollow chamber profile dimensions through self-service action. When the corner connector is inserted, the oblique surface naturally generates the appropriate clamping force in both directions without requiring external actuation or complex mechanisms, achieving adaptive clamping with minimal structure.
3Ease of manufacture
If conventional clamping structures are used, then assembly is simplified, but dimensional tolerances cannot be compensated
Solution Approach 1:
The oblique clamping surface is designed with a specific angle that allows it to compensate for dimensional tolerances in the hollow chamber profile. As the profile dimensions vary within tolerance ranges, the oblique surface automatically adjusts the clamping force distribution, maintaining proper clamping in both directions without requiring precision adjustment or complex compensation mechanisms, thus preserving assembly simplicity while improving tolerance compensation.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The design provides enhanced stability and secure clamping in both directions, compensating for dimensional tolerances and preventing tilting, with improved manufacturing ease and handling during assembly.
Implementation Method 1
The shaft part (2) and the clamping body (4) have wedge and counter-wedge surfaces (24, 31) which, together with the base planes (22, 25) on which they are arranged, form the clamping structure
Data Source
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AI summary
A corner connector for connecting two hollow chamber profiles (3) of windows, doors or the like is described, wherein the corner connector (1) for hollow chamber profiles (3) is designed with a rectangular inner cross-section (5), formed by two inner transverse surfaces (6, 7) and two inner longitudinal surfaces (8, 9), and has a shaft part (2) for insertion into one of the hollow chamber profiles (3), wherein the shaft part (2) extends along a longitudinal axis (L) defining an axial direction, a clamping body (4) designed as a rigid component (10), which has an outer transverse surface (11) for bearing against one of the inner transverse surfaces (6, 7) and an outer longitudinal surface (12) for bearing against one of the inner longitudinal surfaces (8, 9) and is axially displaceable on the shaft part (2), and a clamping structure (24, 27, 30, 31), which enables the axial displacement of the clamping body (4) in a implement a relative movement (16) transverse to the longitudinal axis (L) between the shaft part (2) and the clamping body (4),to clamp the corner connector (1) between the inner transverse surfaces (6, 7) and the inner longitudinal surfaces (8, 9), wherein the transverse relative movement (16) pushes the rigid clamping body (4) away from the shaft part (2) and runs obliquely both to a plane defined by the outer transverse surface (11) and to a plane defined by the outer longitudinal surface (12).