Sliding Rail Auto-Closing Spring Adjustment for Load Tolerance
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Solution Overview
Problem
Conventional side-locking ball bearing sliding rail assemblies have fixed restoring forces, making them inadequate for varying loads and tolerances, requiring complex spring member replacements, which is inconvenient and often results in noise and vibration issues.
Innovation Solution
A side-locking ball bearing sliding rail assembly with an auto-closing mechanism that includes a spring force adjustment member, allowing for the adjustable positioning of a spring member to adjust the restoring force, enabling easy adjustment of the spring force without replacing the spring member or modifying the drawer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If the restoring force of the spring member is increased to handle heavy loads, then the auto-closing capability is improved, but the spring member pulls the movable rail back too quickly causing noises and vibrations
Solution Approach 1:
The patent introduces a buffer member that dynamically interacts with the movable rail during the closing process. The buffer member engages with the movable rail when it moves backward, providing a buffering action that controls the closing speed and reduces impacts. This dynamic buffering mechanism allows the system to use a stronger spring member for heavy loads while preventing the harmful effects of excessive closing speed through the buffer's interference with the rail's motion.
2Adaptability or versatility
If the spring member is replaced to adjust restoring force for different loads, then the adaptability is improved, but the device complexity and ease of operation deteriorate due to complicated replacement procedures
Solution Approach 1:
The patent enables parameter adjustment of the spring member's restoring force without changing the spring member itself. By using a spring force adjustment member that can be positioned at different locations along the spring member, users can modify the effective length and thus the restoring force to match different load requirements. This parameter adjustment mechanism provides adaptability for various loads while maintaining ease of operation through simple positional adjustment rather than component replacement.
Solution Approach 2:
The spring force adjustment member is designed as a separate, adjustable component that can be positioned at different locations along the spring member. This segmentation allows the system to adjust the spring's effective working length in discrete steps, providing multiple restoring force levels without requiring different spring members. The adjustment member acts as an independent element that divides the spring into active and inactive portions, enabling flexible adaptation to different load conditions.
3Adaptability or versatility
If the spring member is replaced to adjust restoring force, then the adaptability is improved, but the device complexity increases due to special techniques required
Solution Approach 1:
The patent enables parameter adjustment of the spring member's restoring force without changing the spring member itself. By using a spring force adjustment member that can be positioned at different locations along the spring member, users can modify the effective length and thus the restoring force to match different load requirements. This parameter adjustment mechanism provides adaptability for various loads while maintaining ease of operation through simple positional adjustment rather than component replacement.
Solution Approach 2:
The spring force adjustment member is designed to be easily adjustable by the user without requiring special tools or techniques. The adjustment mechanism allows users to independently modify the spring's effective length by repositioning the adjustment member along the spring, enabling self-service adaptation to different load conditions without external assistance or complex procedures.
4Ease of manufacture
If engineering tolerances are not perfectly controlled, then manufacturing cost is reduced, but the drawer cannot move smoothly from open to close position
Solution Approach 1:
The spring force adjustment member allows users to adjust the spring's effective length and restoring force to compensate for dimensional variations and tolerance issues in the drawer and rail assembly. By modifying the spring parameter, the system can adapt to different manufacturing tolerances and ensure smooth operation even when components are not perfectly dimensioned.
Solution Approach 2:
The buffer member provides dynamic compensation for tolerance issues by interfering with the movable rail's motion during closing. This buffering action absorbs dimensional variations and tolerance deviations, ensuring smooth operation across a range of manufacturing tolerances without requiring tight control during production.
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
Enables smooth and accurate operation for different loads and tolerances by allowing convenient adjustment of the spring force, eliminating the need for complex replacements and reducing noise and vibration.
Implementation Method 1
automatically moving the movable rail 71 with the connected drawer 81 backwards to the close position by means of the elastic restoring force of a spring member
Implementation Method 2
side-locking ball bearing sliding rail assembly
Data Source
AI summary
A side-locking ball bearing sliding rail assembly formed of a fixed rail, a movable rail, an auto-closing mechanism carrier plate, a sliding device, a linking member and a spring member is disclosed. The auto-closing mechanism carrier plate has a spring force adjustment member longitudinally adjustably mounted thereon and connected with an opposite end of the spring member for adjusting the restoring force of the at least one spring member. By means of adjusting the position of a spring force adjustment member on the auto-closing mechanism carrier plate, the restoring force of the spring member is relatively adjusted to fit different requirements, and thus, the side-locking ball bearing sliding rail assembly can be used for carrying different loads or to fit different size tolerances without making any modifications, or changing the drawer or the spring member, assuring a high level of operating smoothness and accuracy.