Roller Pull-Out Guide With Tilt Slide for Low-Friction Retraction
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Solution Overview
Problem
Existing roller pull-out guides for furniture require multiple parts and complex mechanisms, leading to increased frictional forces and reduced operational reliability during the retraction process.
Innovation Solution
Incorporating a tilt slide with a claw that engages directly with the roller, minimizing the need for additional entrainers and allowing for a compact, reliable retraction mechanism with reduced friction by using coupling parts for the retraction process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If additional entrainers (hooks or similar parts) are used for the tilt slide to engage, then the retraction mechanism can be implemented, but the number of parts increases and the structure becomes more complex
Solution Approach 1:
The patent merges the function of the entrainer (hook) with the roller itself by providing a groove directly on the roller circumference. This eliminates the need for separate entrainer parts, reducing both the number of components and structural complexity while maintaining the retraction mechanism's functionality.
Solution Approach 2:
The roller is designed to serve multiple functions: it provides bearing support for smooth movement during pull-out operation and simultaneously acts as the entrainer for the tilt slide's retraction mechanism through its integrated groove. This multi-functionality reduces the overall part count and simplifies the device structure.
2Reliability
If conventional entrainers are used, then the tilt slide can engage for retraction, but frictional forces increase during the retraction process
Solution Approach 1:
By integrating the entrainer groove directly into the roller, the patent eliminates the need for separate entrainer parts that would create additional contact points and friction. The groove-on-roller design reduces frictional forces while maintaining reliable engagement for the tilt slide during retraction.
3Ease of manufacture
If multiple parts and working steps are used, then the retraction mechanism can be implemented, but operational reliability decreases
Solution Approach 1:
The patent reduces the number of working steps and parts by integrating the entrainer function into the roller itself. This simplification reduces potential failure points and improves operational reliability while maintaining the necessary retraction functionality.
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 operational reliability with fewer parts and working steps, while minimizing frictional forces during the retraction process, allowing for a compact and efficient roller pull-out guide.
Implementation Method 1
a self-retraction device with a spring-loaded, tiltably and displaceably supported tilt slide for the retraction of the furniture part in the slide-in direction
Implementation Method 2
The roller or rollers have herein preferably a bearing function. Additionally, or alternatively, to the additional rollers, roller pull-out guidances according to the invention can also be implemented with sliding carriages known per se, in which balls and/or cylinders are rotatably supported
Data Source
AI summary
A roller pull-out guide pulls out a furniture part from a furniture body in a pull-out direction and slides the furniture part into the furniture body in a slide-in direction. The guide includes at least one guide rail and at least one roller guided in this guide rail as well as a self-retraction device with a spring-loaded, tiltably and displaceably supported tilt slide for retracting the furniture part in the slide-in direction. The tilt slide includes a claw which engages on the roller for the retraction of the furniture part in the slide-in direction.