Loading Rail Projection Design for Drawer Slide Play Compensation
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Solution Overview
Problem
Existing drawer rail systems face issues with lateral play compensation, leading to increased risk of spring damage and additional costs due to protruding resilient tabs and separate functional parts.
Innovation Solution
Incorporating a projection on one rail that interacts with a spring means on the other rail to limit transverse movements, allowing for a reduced overall height of the spring means and compensating for differential play without additional friction, enabling smooth sliding and reduced material requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If spring-loaded tabs are designed to compensate for lateral play between rails, then the play compensation function is improved, but the spring element height increases and the risk of damage increases
Solution Approach 1:
The play compensation function is segmented between two components: the spring element provides longitudinal compensation while a projection on the other rail provides transverse limitation. This division allows each component to be optimized for its specific function, with the projection being a simple rigid feature rather than a large spring structure.
Solution Approach 2:
The projection acts as an intermediary element that mediates between the spring element and the rail. It transfers the transverse movement limitation function from the spring element to itself, allowing the spring element to remain small and focused on its primary longitudinal compensation function.
2Reliability
If spring-loaded tabs are made large to compensate for play, then the play compensation effectiveness is improved, but the material consumption increases and appearance deteriorates
Solution Approach 1:
The compensation mechanism is segmented into a small spring element for longitudinal play and a projection for transverse play. This segmentation eliminates the need for large spring structures, significantly reducing material consumption while maintaining effective play compensation in both directions.
Solution Approach 2:
Different parts of the rail system have different local qualities: the spring element provides elastic compliance where needed for longitudinal adjustment, while the projection provides rigid transverse positioning. This localized functional differentiation optimizes material usage by applying structural properties only where required.
3Reliability
If spring elements are positioned to compensate for play throughout the sliding path, then the play compensation is improved, but the frictional resistance increases
Solution Approach 1:
The spring element and projection engage in a periodic manner rather than continuously. During most of the sliding path, they are disengaged allowing smooth motion with minimal friction. Only when play compensation is needed do they engage, providing intermittent correction without continuous frictional resistance.
Solution Approach 2:
The play compensation function is extracted from the continuous sliding interaction and implemented as a discrete engagement between the spring element and projection. This extraction allows the majority of the sliding path to occur without spring-rail contact, minimizing friction and improving sliding smoothness.
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
This design reduces the risk of spring damage, minimizes material needs, and enhances the sliding mechanism by reducing frictional resistance, allowing for easier drawer operation and cost-effective production.
Implementation Method 1
A spring mechanism located on either the first or second rail, supported by the other rail, compensates for any lateral play between the first and second rails when the slides are installed.
Implementation Method 2
at least one projection is arranged on the other rail, the position of which on and/or its extension along the other rail is selected such that the at least one projection, in the connected state of the first and second rails, cooperates with the spring means to limit transverse movements of the two rails relative to each other.
Data Source
Figure 1
Figure 2a~2b
Figure 3a~3h
AI summary
The invention relates to a loading rail (11) for a pull-out guide (4) for a drawer, having: - a first rail (12), which is to be fixed or is fixed to a drawer (3), - a second rail (13), which is to be arranged or is arranged on a cabinet rail (9) or center rail (14) of a pull-out guide (4) for a drawer, - wherein the first rail (12) and the second rail (13) can be connected to each other by pushing one onto the other, wherein at least one spring means (18, 19) is arranged on the first or second rail (12, 13), wherein at least one protrusion (21, 22, 24) is arranged on the other rail (12, 13), the position of which on and/or the extension of which along the other rail (12, 13) is selected such that the at least one protrusion (21, 22, 24) interacts with the spring means (18, 19) when the first and second rail (12, 13) are connected in order to limit transverse movements of the two rails (12, 13) relative to each other.