Sliding Rail Bearing Layout for Torsion-Resistant Load Support
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Solution Overview
Problem
Conventional sliding devices are complex, costly to manufacture, and fail to reliably resist torsional forces, leading to deformation and reduced lifespan due to concentrated forces and inadequate dispersion of upward and downward forces.
Innovation Solution
A sliding device with a simplified structure featuring movable and stationary rail bodies with diagonally facing bearings and a slider that disperses forces effectively, minimizing the number of tracks and bearings while enhancing resistance to torsional forces through optimized bearing placement and symmetric design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional sliding devices use multiple tracks and bearings to support drawer weight, then load-bearing capacity is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent combines multiple bearing functions into a single intermediate member that integrates both support bearings and resistance bearings. This intermediate member merges the functions of multiple separate components into one unified structure, reducing overall device complexity while maintaining load-bearing capacity through the integrated bearing arrangement.
Solution Approach 2:
The intermediate member serves multiple functions simultaneously: it acts as a structural support element, contains both support bearings for load-bearing and resistance bearings for friction control, and provides a connection interface between the drawer and cabinet. This multi-functionality reduces the number of separate components needed.
2Ease of manufacture
If conventional sliding devices use traditional bearing arrangements, then manufacturing is simpler, but resistance to torsional forces is insufficient causing deformation
Solution Approach 1:
The patent positions the support bearings and resistance bearings at asymmetric locations within the intermediate member, with support bearings at one end and resistance bearings at the other end. This asymmetric arrangement creates optimal resistance to torsional forces while maintaining manufacturing simplicity through straightforward bearing installation at defined positions.
Solution Approach 2:
The patent addresses torsional force resistance by adding a rotational dimension consideration to the bearing arrangement. By positioning bearings to resist both linear motion and rotational torque, the design handles multi-directional forces without complicating the basic linear sliding structure.
3Volume of moving object
If conventional sliding devices concentrate forces on specific bearing points, then device size is reduced, but lifespan decreases due to force concentration
Solution Approach 1:
The patent segments the bearing functions into two distinct groups: support bearings for vertical load support and resistance bearings for friction control. This segmentation distributes force concentrations to different bearing sets, preventing any single bearing from experiencing excessive combined loads, thereby extending device lifespan while maintaining compact dimensions.
Solution Approach 2:
The patent applies different bearing characteristics to different locations within the intermediate member. Support bearings are positioned to handle vertical loads, while resistance bearings are positioned to control friction during drawer movement. This localized optimization ensures each bearing operates within optimal load parameters, extending overall device life.
4Reliability
If conventional sliding devices use complex bearing arrangements to resist torsional forces, then reliability is improved, but manufacturing cost and complexity increase
Solution Approach 1:
The patent merges support and resistance bearing functions into a single intermediate member structure. This integration achieves reliable torsional force resistance through coordinated bearing action while avoiding the complexity of separate mechanical components for each 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 sliding device stably supports various forces, extends lifespan by uniformly dispersing forces, and reduces size and production costs, with improved resistance to torsional forces and enhanced manufacturing simplicity.
Implementation Method 1
movable rail bearings rolling in contact with the movable rail body; stationary rail bearings rolling in contact with the stationary rail body
Data Source
AI summary
A movable rail body is fastened to a movable body and has a first space. Movable rail bearings are disposed in the first space at diagonally facing corners of the movable rail body. A stationary rail body is fastened to a stationary support and has a second space. Stationary rail bearings are disposed in the second space at diagonally facing corners of the stationary rail body. A slider has an upper end in rolling contact with the movable rail bearings, and a lower end in rolling contact with the stationary rail bearings. An angle between a center line parallel to the movable body and a connection line connecting centers of the movable rail bearings ranges from 40 degrees to 50 degrees. An angle between the center line and a connection line connecting centers of the stationary rail bearings ranges from 130 degrees to 140 degrees.