Furniture Drawer Coupling Guide to Prevent Driver Overrun
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Solution Overview
Problem
Existing devices for drawing in or ejecting movably mounted furniture parts often suffer from the coupling element overrunning the driver, especially under heavy loads or high-speed operations, leading to potential damage, and previous solutions have bulky and complex designs that hinder efficient movement.
Innovation Solution
A device with a guide that limits transverse movements between the driver and coupling element, featuring a guide part connected to the coupling element and a guide profile on the carrier, ensuring accurate guidance and secure coupling, while allowing for a space-saving and cost-effective design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the coupling element is allowed to move freely relative to the driver, then the device can accommodate heavy loads and high-speed operations, but the coupling element may overrun the driver causing damage
Solution Approach 1:
A guide mechanism acts as an intermediary between the coupling element and the driver, consisting of a guide part on the coupling element and a guide profile on the carrier. This intermediary component prevents direct harmful interaction while allowing necessary movement, thus protecting the driver from being overrun without requiring complex constraints on the coupling element itself.
Solution Approach 2:
The guidance function is segmented into separate components: the guide part attached to the coupling element and the guide profile on the carrier. This segmentation allows each component to perform its specific function independently, simplifying the overall design while effectively preventing overrun of the driver.
2Manufacturing precision
If a guide is provided to limit movements of the driver relative to the coupling element, then the coupling process is accurate and reliable, but the carrier and coupling element become larger and more complex
Solution Approach 1:
The guide mechanism provides precision only where needed - locally at the coupling interface between the driver and coupling element. The guide part and guide profile are positioned specifically to ensure accurate coupling during the critical coupling process, while the rest of the components maintain their original compact dimensions.
Solution Approach 2:
The guide acts as a localized intermediary that provides precise guidance only during the coupling process, allowing the majority of the carrier and coupling element to remain compact. The guide profile and guide part interact only when needed for accurate coupling, rather than requiring the entire components to be oversized for guidance.
3Reliability
If the guide extends over the entire length of the drawer guide, then comprehensive guidance is provided, but the device occupies more space and has greater moving masses
Solution Approach 1:
The guide mechanism provides guidance only partially - specifically during the coupling process when the coupling element approaches and engages with the driver. The guide part and guide profile interact only in the critical coupling zone, rather than providing continuous guidance over the entire travel distance, thus reducing unnecessary moving masses while maintaining reliability where needed.
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 prevents the coupling element from overrunning the driver, ensuring reliable operation under heavy forces and maintaining accuracy and security during the coupling process, while also optimizing space usage and reducing moving masses.
Implementation Method 1
a spring-loaded driver (2) and a coupling element (3) which can be coupled to the driver (2)
Data Source
AI summary
The invention relates to a device for retracting or ejecting a movably-mounted furniture part (15) relative to a furniture carcass (16), comprising a carrier (1), a spring-loaded driving element (2) that is movably mounted on said carrier (1), and a coupling element (3) that moves relative to the carrier (1) and can be detachably coupled to said spring-loaded driving element (2), a guide (4) being provided which limits movements of said spring-loaded driving element (2) relative to the coupling element (3).