Segmented Slide Rail Structure for Smooth, Low-Cost Motion
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Solution Overview
Problem
Existing slide rail systems for server cabinets face a trade-off between smooth sliding, which is costly, and lower-cost friction-type structures that lack smoothness, necessitating a balance between cost and performance.
Innovation Solution
The design incorporates a fixing frame, outer rail, intermediate rail, inner rail, and ball brackets with steel balls, allowing the intermediate rail to slide smoothly between the outer and inner rails, while maintaining structural strength and cost-effectiveness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If ball-type structure is used, then sliding smoothness is improved, but cost increases
Solution Approach 1:
The slide rail is divided into multiple segments: outer rail, intermediate rail, and inner rail, with ball brackets positioned at specific intervals. This segmentation allows the use of ball-type structures only where needed for smooth sliding, rather than throughout the entire sliding path, thereby reducing overall cost while maintaining operational smoothness.
Solution Approach 2:
Ball brackets with steel balls are installed at specific locations (outer rail and intermediate rail interfaces) rather than uniformly throughout. This local application of ball-type structure provides smooth sliding where most needed while using simpler friction-type structures elsewhere, optimizing the balance between cost and performance.
2Ease of manufacture
If friction-type structure is used, then cost is reduced, but sliding smoothness deteriorates
Solution Approach 1:
The sliding interface is segmented into zones: ball-type structures at critical interfaces (outer and intermediate rails) for smooth operation, and friction-type structures at other interfaces for cost efficiency. This segmentation allows each zone to be optimized for its specific function.
Solution Approach 2:
Ball brackets serve as intermediary components that introduce steel balls at specific interfaces to reduce friction and improve sliding smoothness, while the rest of the system uses simpler friction-type contacts. The ball brackets act as mediators between the expensive ball-type and cheaper friction-type structures.
3Ease of operation
If ball brackets with steel balls are added, then sliding smoothness is improved, but device complexity increases
Solution Approach 1:
The slide rail system is segmented into modular components: outer rail, intermediate rail, inner rail, and ball brackets. Each component is relatively simple in design, and the ball brackets are positioned at discrete locations rather than continuously, reducing overall structural complexity while maintaining smooth sliding.
Solution Approach 2:
The steel balls in the ball brackets automatically perform the function of reducing friction and enabling smooth sliding without requiring external control or adjustment mechanisms. The structure is self-regulating, with the balls naturally positioning themselves to facilitate smooth motion between rail segments.
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 configuration achieves smooth sliding with improved bearing capacity and cost-effectiveness, addressing the limitations of both ball-type and friction-type structures by enabling efficient assembly and operation.
Implementation Method 1
ball brackets (80) mounted with steel balls (90)... The intermediate rail (40) can slide relative to the outer rail (20) through the balls (90)
Implementation Method 2
The ball-type structure can slide smoothly, but is costly. The friction-type structure has lower cost and better bearing capacity, but cannot slide as smoothly as the ball-type one.
Data Source
AI summary
A slide rail includes an outer rail, an intermediate rail, an inner rail, and a plurality of ball brackets with balls. The ball brackets are received between the outer rail and the intermediate rail. The intermediate rail is received between the outer rail and the inner rail. The intermediate rail is slidable relative to the outer rail through the balls. The inner rail slidably contacts the intermediate rail.