Guide device for a pull-out device
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Solution Overview
Problem
Existing guide devices for corner cupboards, such as multi-part guide rails, suffer from limited torsional and flexural rigidity, leading to deformation and perceived quality defects when heavy objects are stored, causing the storage compartments to deviate from a horizontal position.
Innovation Solution
A guide device comprising a first, second, and third guide rail arrangement with toothed racks and a toothed belt mechanism, providing increased rigidity and stability by allowing relative displacement through rolling elements, ensuring the storage compartments remain horizontal even under heavy loads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If multi-part guide rails are used, then the guide device can be assembled and provide basic guidance function, but the torsional and bending stiffness are limited causing deformation under heavy loads
Solution Approach 1:
The patent combines multiple guide rail functions into a single monolithic guide rail structure that integrates guidance, support, and positioning functions. This unified structure eliminates the weakness of multi-part assemblies and provides sufficient torsional and bending stiffness to prevent deformation under heavy loads while maintaining guidance functionality.
Solution Approach 2:
The guide rail is designed as a monolithic structure that can be produced using composite materials or optimized metal alloys to achieve high strength-to-weight ratio and superior stiffness characteristics, thereby preventing tilting and deviation of storage compartments under load.
2Stability of the object's composition
If traditional guide rails are used, then the structure is simple, but the storage compartments deviate from horizontal position when fully extended under load
Solution Approach 1:
The patent introduces a monolithic guide rail as an intermediary element between the fixed mounting structure and the movable storage compartment. This guide rail mediates the movement by providing a stable reference structure that maintains horizontal positioning while allowing smooth displacement through integrated roller support surfaces.
Solution Approach 2:
The guide rail design incorporates dynamic considerations by optimizing the structure to maintain stability during motion. The monolithic construction provides consistent stiffness characteristics throughout the range of motion, ensuring that storage compartments remain horizontal both when stationary and during displacement under varying load conditions.
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 enhances the accessibility and dimensional stability of storage compartments, preventing noticeable deviations and ensuring horizontal alignment, even with heavy loads, while reducing friction and component count for a more efficient and compact design.
Implementation Method 1
The second guide rail arrangement is displaceable relative to the first guide rail arrangement by means of at least two pairs of roller elements, each of which can roll on a guide rail
Implementation Method 2
the rack and the further rack being engaged with each other via a toothed belt rotatably mounted on two rollers on the second guide rail arrangement
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
A guide device (100, 200, 300, 400) comprises a first guide rail arrangement (1), a second guide rail arrangement (2), and a third guide rail arrangement (3), wherein the first guide rail arrangement (1) is intended for stationary installation on or attached to a base element (5), wherein the first guide rail arrangement (1) comprises a first pair of guide rails (10), wherein the second guide rail arrangement (2) comprises a second pair of guide rails (20), and wherein the third guide rail arrangement (3) comprises a third pair of guide rails (30), wherein the second guide rail arrangement (2) is displaceable relative to the first guide rail arrangement (1) by means of at least two pairs of roller elements (21, 22) that can roll on one of the guide rails (10), and wherein the third guide rail arrangement (3) is displaceable relative to the second guide rail arrangement (2) by means of at least one pair of roller elements (31), characterized in thatthat the first guide rail arrangement (1) comprises a rack (15) and the third guide rail arrangement (3) comprises a further rack (35), wherein the rack (15) and the further rack (35) are engaged with each other via a toothed belt (29) rotatably mounted on two rollers (27, 28) on the second guide rail arrangement (2).