Three-Track Slide Assembly with Positioning Block Locking
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Solution Overview
Problem
Conventional three-part type slide track assemblies experience instability and reduced structural strength due to the cooperation between cylindrical positioning pegs, sliding grooves, and locking plates, affecting the smooth sequential retraction and extension of the inner and middle tracks relative to the outer track.
Innovation Solution
The slide track assembly incorporates an outer track with projections and a positioning block with a return spring, allowing the middle and inner tracks to move smoothly relative to the outer track, with the positioning block's vertical movement and stop faces enabling locking and unlocking mechanisms for stable extension and retraction, enhancing structural strength and durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If cylindrical positioning pegs with different diameter cylindrical sections are used to cooperate with sliding grooves and locking plates for controlling locking and unlocking, then sequential extension and retraction of tracks is permitted, but the cooperation is unstable and structural strength is adversely affected
Solution Approach 1:
The positioning block is divided into multiple functional sections: a first cylindrical section for receiving by the outer track, a second cylindrical section for receiving by the middle track, and a third cylindrical section with a stop face. This segmentation allows each section to perform its specific function independently, improving stability while maintaining sequential movement capability.
Solution Approach 2:
The positioning block acts as an intermediary component between the outer track and middle track. It mediates the interaction between these two tracks, providing a stable cooperative mechanism that replaces the unstable direct cooperation between cylindrical pegs and locking plates.
2Ease of operation
If cylindrical positioning pegs with different diameter cylindrical sections are used to cooperate with sliding grooves and locking plates, then sequential extension and retraction of tracks is permitted, but structural strength is adversely affected
Solution Approach 1:
The positioning block is divided into multiple functional sections: a first cylindrical section for receiving by the outer track, a second cylindrical section for receiving by the middle track, and a third cylindrical section with a stop face. This segmentation allows each section to perform its specific function independently, improving stability while maintaining sequential movement capability.
Solution Approach 2:
The positioning block integrates multiple functional features (cylindrical sections of different diameters, stop faces, guiding faces) into a single composite component, replacing the need for multiple separate cylindrical pegs and their cooperative mechanisms, thereby enhancing overall structural strength.
3Adaptability or versatility
If conventional three-part type slide track assembly is used, then server can move in a range, but the cooperation between cylindrical positioning peg, sliding grooves, and locking plates is unstable
Solution Approach 1:
The positioning block is divided into multiple functional sections: a first cylindrical section for receiving by the outer track, a second cylindrical section for receiving by the middle track, and a third cylindrical section with a stop face. This segmentation allows each section to perform its specific function independently, improving stability while maintaining sequential movement capability.
Solution Approach 2:
The positioning block is designed to dynamically transition between different states: being received by the outer track, being received by the middle track, and controlling locking/unlocking. This dynamic design maintains adaptability for movement while ensuring stability at each stage through dedicated receiving structures.
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 solution allows for smooth and stable sequential movement of the middle and inner tracks relative to the outer track, improving structural strength and durability while simplifying manufacturing and assembly processes.
Implementation Method 1
A return spring is attached between the positioning block and a wall of the sliding groove. The return spring biases the positioning block towards the first projection or the second projection.
Implementation Method 2
The return spring biases the positioning block towards the first projection or the second projection
Data Source
AI summary
A slide track assembly includes an outer track having a first unlocking face, a first stop face, and a second stop face. A middle track is slideably received in the outer track and includes a sliding groove. An inner track is slideably received in the middle track and includes a first unlocking portion, a first stop portion, and a second stop portion. A positioning block is received in the sliding groove and is slideable relative to the middle track in a vertical direction. The positioning block includes first and second stop ends. The positioning block further includes a stop face extending between the first and second stop ends and facing the first lateral wall of the sliding groove. The positioning block can be moved to lock or unlock the inner track, the middle track, and the outer track during extending and retraction of the inner track and the middle track.