Furniture Guide Adjustment with Spiral Self-Locking Positions
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Solution Overview
Problem
Existing adjustment devices for furniture parts, such as drawers, fail to provide a permanently reliable adjustment for front gap, height, and tilt positions due to manufacturing and mounting tolerances, leading to inconsistent performance and functionality.
Innovation Solution
A positioning default mechanism with a rotatable adjustment element and a spiral-shaped adjustment contour that interacts with a counter portion, creating a self-locking effect to ensure precise positioning of furniture parts, resistant to external forces and vibrations, allowing for manual adjustment of the front gap, tilt, and height adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional adjustment device is used, then the furniture part can be adjusted, but the adjustment is not permanently reliable due to manufacturing and mounting tolerances
Solution Approach 1:
The adjustment element features a spiral-shaped adjustment contour that engages with a counter portion to create a self-locking mechanism. The curved spiral geometry transforms rotational movement into linear positioning while maintaining constant engagement pressure, preventing slippage and ensuring permanent reliability despite manufacturing tolerances.
Solution Approach 2:
The adjustment mechanism is divided into distinct functional components: the rotatable adjustment element with spiral contour, the counter portion with abutment surface, and the positioning default mechanism. This segmentation allows each component to be optimized independently while working together to achieve reliable, precise positioning.
2Ease of operation
If the adjustment mechanism allows manual adjustment, then positioning flexibility is improved, but the mechanism may become loose under external forces and vibrations
Solution Approach 1:
The spiral adjustment contour is designed to preemptively counteract external forces and vibrations that may loosen the adjustment. The self-locking geometry creates continuous engagement pressure that resists loosening before it can occur, maintaining position stability while preserving manual adjustability.
Solution Approach 2:
The mechanism converts the potential harmful effect of external forces and vibrations into beneficial engagement pressure. Instead of allowing these forces to loosen the adjustment, the spiral geometry transforms them into increased friction and locking pressure that secures the positioned state.
3Device complexity
If a simple adjustment mechanism is used, then device complexity is reduced, but adjustment precision and reliability deteriorate
Solution Approach 1:
The spiral-shaped adjustment contour achieves precise positioning through its curved geometry, which converts simple rotational movement into controlled linear adjustment. This elegant curved design provides fine adjustment precision without requiring complex multi-component mechanisms, maintaining simplicity while delivering high precision.
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 reliable and precise adjustment mechanism that maintains the configured position of furniture parts, resisting external forces and ensuring consistent functionality, even under varying conditions like vibrations and loading, by utilizing a multi-edge adjustment contour and counter portion for secure locking and fine-tuned adjustments.
Implementation Method 1
an abutment portion (12a, 12b) which interacts with an adjustment contour (13) of the adjustment element (5), wherein the adjustment contour (13) is, realized extending in the manner of a spiral with respect to the rotational axis (D), by way of which, in dependence on the rotational position of the adjustment element (5), a region of the adjustment contour (13) which is effective on the abutment portion (12a, 12b) is slid into a position as a result of which the position of the furniture part (34) in the closed position is predeterminable
Data Source
AI summary
A device for adjusting a position of a furniture part on an item of furniture such that a closed position of the furniture part is predeterminable. The device includes an adjustment element for rotating a positioning default mechanism, and an abutment portion which interacts with an adjustment contour of the adjustment element. The adjustment contour extends as a spiral, by way of which a region of the adjustment contour and the abutment portion interact in such a manner that a stop of the device is slidable into a position, so that the closed position of the furniture part is predeterminable. The adjustment contour comprises a multi-edge portion with several surface portions which are aligned at an angle with respect to one another. The adjustment contour interacts with a counter portion on the abutment portion in such a manner that several predetermined rotational positions of the adjustment element are configurable.