Drawer Slide Roller Cage Structure for Low-Noise End Stops
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing drawer slides lack a cost-effective and simple solution for noise damping while maintaining functionality, as traditional buffers integrated into carriages can be complex and expensive to produce.
Innovation Solution
The rolling element cage is designed with transverse incisions or material weakenings to provide resilience, which can be further enhanced by filling these with elastic materials or using telescopically displaceable parts with a spring, allowing for adjustable damping characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If traditional buffers are integrated into carriages to achieve noise damping, then damping effect is improved, but device complexity and production cost increase
Solution Approach 1:
The damping function is merged into the rolling element cage structure itself by adding incisions, eliminating the need for separate buffer components. The cage serves both as a structural element for holding rolling elements and as a damping element through its incised design.
Solution Approach 2:
The physical structure of the rolling element cage is modified by introducing incisions that change its mechanical parameters, specifically creating resilience in the longitudinal direction. This transforms the rigid plastic cage into a semi-flexible structure capable of energy absorption.
2Ease of manufacture
If buffers are integrally formed on the carriage to simplify assembly, then ease of manufacture is improved, but production cost and complexity increase
Solution Approach 1:
The damping function is integrated into the rolling element cage itself through incisions, eliminating the need for separate buffer components. This merger simplifies the overall assembly while maintaining the damping function.
Solution Approach 2:
The rolling element cage serves multiple functions: it holds the rolling elements and simultaneously provides damping through its incised structure. This self-service approach eliminates the need for additional dedicated damping components.
3Reliability
If the rolling element cage is made of high-strength plastic to securely accommodate rolling elements, then reliability is improved, but resilience and damping capacity deteriorate
Solution Approach 1:
The rolling element cage exhibits different mechanical properties in different regions: the overall structure maintains high strength to secure rolling elements, while localized incisions create flexible zones that provide resilience and damping capacity.
Solution Approach 2:
The rolling element cage structure is segmented by introducing incisions that divide the solid plastic material into sections. This segmentation creates flexibility and damping capacity while the remaining material maintains structural integrity and rolling element retention.
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 achieves effective noise damping while being inexpensive to produce, as the arrangement and shape of incisions significantly influence the damping properties, ensuring a resilient rolling element cage that reduces impact energy when a drawer is opened.
Implementation Method 1
the rolling element cage is designed to be resilient in the direction of its longitudinal axis in the sense of a damping element
Implementation Method 2
These incisions, slits or similar weakenings in the material give the rolling element cage a certain resilience, with the arrangement, number or geometric shape having a very large influence on the desired damping property
Data Source
Figure 1
Figure 2
Figure 3a~3c
AI summary
The invention relates to a draw pull guide comprising a guide rail (2) for fixing to a piece of furniture and a running rail (30) fixed to the drawer, the running rail (30), or an extending intermediate rail that runs relative to the guide rail (1) on several roller bodies (2a) housed in a roller cage (2) made from metal, runs relative to the guide rail (1) on several roller bodies (2a) made from metal housed in a roller cage(2) made from plastic and the pull extension of the running rail (30) or the intermediate rail is defined by an end stop, fitted to the running rail (30) or the intermediate rail, which extends into the running track of the roller bodies (2a) and a stop is provided on the guide rail (1) and/or on the intermediate rail extending into the displacement path of each roller body cage (2) against which the roller body cage (2) stops shortly before reaching the end stop for the roller bodies (2a) and the roller body cage (2) has an elastic form in the direction of the longitudinal axis thereof in the manner of a damping body.