Drawer Rail Clamping Mechanism for High Holding Forces
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Solution Overview
Problem
Existing furniture drawer fixing technologies face limitations in providing high holding forces, especially for heavy drawers, and compromise on positional accuracy and attractive joint patterns due to limited design in existing locking mechanisms.
Innovation Solution
A clamping mechanism with a self-locking clamping element and a web-shaped holding part, utilizing a non-positive connection for stable fixation and precise positioning, which includes a clamping lever mounted rotatably or as a bent metal sheet, providing high clamping forces through lever effect and adjustable for precise alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a plastic locking element and base part are used to compensate for distance tolerances, then the tolerance compensation is improved, but the holding forces are limited especially for heavy drawers
Solution Approach 1:
The invention uses a composite construction where a metal clamping element (providing high strength and holding force) is integrated with a plastic base part (providing tolerance compensation). The metal clamping element engages with the drawer front through a clamping mechanism, while the plastic base part absorbs dimensional tolerances, thereby achieving both high holding forces for heavy drawers and tolerance compensation simultaneously.
2Ease of operation
If an elastic piece of material connects the holding part and counter-holding part, then the coupling is achieved, but the positional accuracy in the longitudinal direction is reduced
Solution Approach 1:
The invention extracts the elastic element from the longitudinal positioning function, using it only for lateral coupling and absorption. The longitudinal positional accuracy is achieved through a separate rigid clamping mechanism with a clamping element that directly engages the drawer front, thereby maintaining high positional accuracy while still providing easy coupling through the elastic component in other directions.
3Manufacturing precision
If a locking device is used to fix the drawer laterally, then the lateral fixation is achieved, but the holding forces in standardized stop tests are comparatively low
Solution Approach 1:
The invention merges the lateral locking function with the longitudinal clamping function into a single integrated clamping mechanism. The clamping element, when actuated, simultaneously provides lateral positioning and longitudinal holding force through its engagement with the drawer front. This unified approach ensures that the same high-strength clamping force acts in both directions, thereby achieving both accurate lateral positioning and high holding forces in stop tests.
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 ensures high holding forces and precise positioning of the drawer, maintaining stability during impact tests and allowing easy assembly with minimal friction, while enabling stepless adjustment and precise alignment, enhancing the overall stability and accuracy of the drawer's placement.
Implementation Method 1
a self-locking clamping element being provided on the receptacle, by means of which the holding part is non-positively secured against being pulled out
Implementation Method 2
The clamping element is preferably designed as a clamping lever and rotatably mounted about an axis of rotation
Data Source
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AI summary
The invention relates to a device for fixing a push element, in particular a drawer box (4) to a rail (5) of a pull-out guide (3), said device comprising a clamping mechanism with a receptacle (20), into which a web-shaped holding part (12) can be inserted, wherein a self-locking clamping element (25) is provided at the receptacle (20), by which the holding part (12) is secured in a clamping manner against being pulled out. In this way, a particularly stable fixation of the drawer box (4) to a pull-out guide (3) can be achieved.