Self-Locking Clamping Mechanism for Drawer Pull-Out Guide Fixation
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Solution Overview
Problem
Existing devices for fixing a push element, such as a drawer, to a pull-out guide face limitations in providing high holding forces, especially when the drawer is extended to its maximum position and subjected to load, leading to reduced positional accuracy and low holding forces during stop tests.
Innovation Solution
A device with a clamping mechanism featuring a self-locking clamping lever that secures a web-shaped holding part in a frictionally engaged manner, allowing for high holding forces and precise positioning, with the clamping lever being rotatably mounted and pretensioned via springs or energy storage devices, enabling stepless adjustment and easy assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a plastic latching element and base part are used to compensate for distance tolerances, then adaptability is improved, but holding force is reduced
Solution Approach 1:
The invention uses a composite construction combining a metal profile section (providing strength and holding force) with a plastic covering (providing tolerance compensation). The metal profile section maintains structural integrity and clamping force, while the plastic covering absorbs dimensional tolerances, resolving the contradiction between adaptability and holding force.
2Adaptability or versatility
If a resilient material piece connects holding part and counter-holding part, then adaptability is improved, but manufacturing precision is reduced
Solution Approach 1:
The invention changes the physical state of the connection from elastic/deformable (resilient material) to rigid/preset (adjustment device with scale). The adjustment device allows precise positioning through mechanical adjustment and locking, eliminating the positional inaccuracies introduced by resilient material deformation while maintaining adaptability through the adjustment mechanism.
3Manufacturing precision
If a form-fitting connection with stop elements is used, then manufacturing precision is improved, but adaptability is reduced
Solution Approach 1:
The invention transitions from a static form-fitting connection with fixed stop elements to a dynamic adjustment device with continuous variability. The adjustment device allows continuous modification of the holding part position through rotational or linear adjustment mechanisms, enabling both precise positioning and adaptive adjustment, thereby resolving the contradiction between manufacturing precision and adaptability.
4Ease of operation
If heavy drawers extend to maximum pull-out position, then usability is improved, but holding force requirement increases
Solution Approach 1:
The invention applies preliminary clamping force through the clamping mechanism before the drawer is fully extended and loaded. The clamping lever pre-secures the holding part in the receptacle, creating initial frictional engagement that prevents pulling out. This preliminary action ensures high holding force is available when needed during maximum extension with load, resolving the contradiction between usability and holding force requirement.
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 device provides stable securing of the push element with high holding forces, ensuring it cannot be pulled out, while allowing for precise positioning and easy assembly, even under loaded conditions, and maintains the drawer's position without slipping during extension.
Implementation Method 1
a self-locking clamping lever is provided on the receptacle by means of which the holding part is secured in a frictionally engaged manner against being pulled out
Implementation Method 2
a holding part and a counter-holding part are connected to one another via a resilient material piece
Data Source
AI summary
A device for fixing a push element, in particular a drawer box to a rail of a pull-out guide, the device comprising a clamping mechanism with a receptacle, into which a web-shaped holding part can be inserted, wherein a self-locking clamping element is provided at the receptacle, by means of which the holding part is secured in a clamping manner against being pulled out. As a result, a particularly stable fixation of the drawer box to a pull-out guide can be achieved.