Window Fitting Clamping System for Load-Bearing Adjustment
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Solution Overview
Problem
Existing fitting arrangements for aligning door or window sashes relative to frames are complex in assembly, require multiple movable components, and have limited load-bearing capacity due to small dimensions and complex designs.
Innovation Solution
A clamping system comprising a holding piece and a T-shaped clamping bolt, which forms a frictional connection with the scissor arm, allowing continuous adjustment without positive locking elements, and is enhanced by a spring element for increased friction and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If positive locking elements (teeth) are used to connect adjusting piece and scissor arm, then adjustment is enabled, but load-bearing capacity is limited due to small surface pressure on the teeth
Solution Approach 1:
The patent replaces the positive locking tooth mechanism with a friction-based clamping system using a clamping bolt and spring element. This substitution allows the use of friction force instead of surface pressure on small teeth, significantly increasing the load-bearing capacity while maintaining the adjustment function through the same friction-lock principle.
2Ease of operation
If multiple movable components are used for adjustment, then adjustment functionality is achieved, but assembly complexity increases
Solution Approach 1:
The patent combines the adjustment and locking functions into a single integrated clamping system consisting of only two components: a clamping bolt and a spring element. This merging of functions eliminates the need for multiple separate movable components, reducing assembly complexity while maintaining full adjustment functionality through the friction-lock mechanism.
3Area of stationary object
If small dimensions are used to reduce installation space, then space requirement is reduced, but load-bearing capacity decreases
Solution Approach 1:
The patent changes the fundamental parameter of force transmission from surface pressure (in tooth mechanisms) to friction force (in the clamping system). This parameter change allows the use of larger clamping forces without increasing the installation space, as the friction force can be generated within the same compact area between the clamping bolt and the adjusting piece/scissor arm contact surfaces.
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 solution provides a simple, stable, and reliable design with improved load-bearing capacity and reduced complexity in assembly, enabling continuous adjustment and increased frictional connection strength with increasing forces.
Implementation Method 1
a spring element (22), which exerts a clamping force on the clamping bolt (8)
Implementation Method 2
a spring element (22), which exerts a clamping force on the clamping bolt (8)
Data Source
Figure 1~2
Figure 3~4
Figure 5
AI summary
The invention relates to a fitting arrangement (1) for a window, a door or the like, comprising a scissor fitting (2) designed to pivot a sash of the window or door on a frame of the window or door, wherein the scissor fitting (2) comprises a frame-side adjusting element (4) and a sash-side scissor arm (3) which are overlapping and displaceable relative to each other along a displacement direction (5) in order to adjust the effective length of the scissor fitting (2), so that a displacement of the adjusting element (4) relative to the scissor arm (3) that increases the effective length is blocked and a displacement of the adjusting element (4) relative to the scissor arm (3) that decreases the effective length is permitted.In order to provide a particularly simple and robust design, it is provided that the adjusting piece (4) and the scissor arm (3) are connected via a clamping system (6) which consists of a retaining piece (7) and a clamping bolt (8), wherein the clamping system (6) receives the clamping bolt (8) in a clamping position inclined relative to the plane of the scissor arm (9) and the adjusting piece (4) has means to align the clamping bolt (8) in an approximately perpendicular orientation to the plane of the scissor arm (9).