Pull-Out Guide Stop Damper for Compact High-Load Braking
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Solution Overview
Problem
Existing pull-out guides for furniture face challenges in integrating damping devices that require minimal space and can handle high loads effectively, as traditional solutions like cylinder dampers and elastomer materials either occupy too much space or wear quickly under high loads.
Innovation Solution
A pull-out guide utilizing a lever-based stop damper with a flexible second lever arm that acts as a leaf spring to dampen braking action, combined with an overload-stop device to prevent excessive flexing and ensure durability, allowing for efficient damping with minimal space usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional cylinder dampers or rotation dampers are used, then damping effect is achieved, but space requirement increases and installation becomes problematic
Solution Approach 1:
The patent extracts the damping function from traditional bulky cylinder dampers and implements it through a compact lever mechanism with an elastomeric element. The lever arm with elastomeric material directly contacts the stop surface to provide damping without requiring the space-consuming piston/cylinder structure of conventional dampers.
Solution Approach 2:
The patent introduces a lever mechanism as an intermediary between the moving furniture part and the basic structure. This lever with elastomeric material acts as a mediator that provides damping action through controlled contact with stop surfaces, replacing the need for direct piston/cylinder damper installation.
2Volume of moving object
If rubber stop elements are used for damping, then space requirement is reduced, but wear increases under high loads
Solution Approach 1:
The patent employs composite construction by combining a rigid lever arm structure with an elastomeric material element. The rigid lever provides structural strength to handle high loads, while the elastomeric material provides the damping function. This composite approach allows the damping component to withstand high loads without excessive wear while maintaining compact dimensions.
Solution Approach 2:
The lever mechanism provides dynamic damping action where the elastomeric material deforms under load and rebounds, absorbing energy during the braking action. This dynamic response allows the system to handle high loads effectively while maintaining durability through the resilient nature of the elastomeric element.
3Volume of moving object
If lever-based stop damper with flexible second lever arm is used, then space requirement is minimized and durability is improved, but braking action damping may be insufficient without proper flexing
Solution Approach 1:
The patent applies local quality by making only the second lever arm flexible while keeping the first lever arm rigid. This localized flexibility in the second lever arm allows it to bend and absorb energy during braking action, providing effective damping. The rigid first lever arm maintains structural integrity and proper force transmission, while the flexible second lever arm specifically handles the damping function.
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 lever-based damping system effectively reduces braking noise and maintains durability even under high loads, while minimizing space requirements, making it suitable for high-load applications without the need for extensive modifications to the guide rail design.
Implementation Method 1
The second lever arm is of elastically flexible design such that the second lever arm uses its flexing to damp the braking action of the second guide rail
Implementation Method 2
the second lever arm uses its flexing to damp the braking action of the second guide rail. The second lever arm thus acts in the manner of a leaf spring
Data Source
AI summary
A pull-out guide for a furniture part which is pulled out of a basic furniture structure having first and second guide rails, the second guide rail is mounted for displacement over a displacement distance, in and counter to a displacement direction. A braking action of the second guide rail is damped at least at one end of the displacement distance by a stop damper against which a mating stop element runs up. The stop damper includes a lever mounted for pivoting about a pivot axis on the guide rail on which the stop damper is arranged, and has first and second lever arms which can be flexed elastically for damping the braking action of the second guide rail. At a limit value for the pivoting action of the first lever arm, an overload-stop device takes effect and limits the pivoting action of the first lever arm about the pivot axis.