Slide rail assembly
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional slide rail assemblies require inconvenient manual operation to sever engagement relationships, especially when mounted to a rack, as users need to reach behind the intermediate slide track to operate the positioning device, making retraction less efficient and less user-friendly.
Innovation Solution
A slide rail assembly with a positioning device comprising an elastic member and a positioning member that moves between engaging and disengaging positions based on the movement of the second rail relative to the first rail, utilizing an incline or cambered surface to facilitate automatic disengagement and obstruction for directional control, allowing for easier retraction without manual intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual operation is used to sever engagement, then the engagement can be severed, but the operation becomes inconvenient and time-consuming
Solution Approach 1:
The positioning member is pre-configured with an incline surface that automatically activates the disengagement process when the second rail is pulled forward, eliminating the need for manual intervention at the rear of the assembly
Solution Approach 2:
The system uses the user's own pulling action on the second rail to automatically trigger the disengagement mechanism through the incline surface, making the system self-operating without requiring separate manual severing actions
2Reliability
If the positioning device is located at the rear of the intermediate slide track, then engagement can be maintained, but users must reach behind to operate it
Solution Approach 1:
Instead of requiring the user to reach back to the rear positioning device, the solution inverts the approach by making the front pulling action automatically control the rear positioning member through the incline surface mechanism
3Ease of operation
If automatic disengagement mechanism is added, then ease of operation improves, but device complexity increases
Solution Approach 1:
The solution extracts only the essential incline surface feature from complex automatic disengagement mechanisms, achieving automation through a simple geometric surface rather than a elaborate mechanical system
Solution Approach 2:
The incline surface automatically converts the user's pulling motion into disengagement action without requiring additional actuators, sensors, or control systems, maintaining simplicity while achieving automation
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 convenient and efficient retraction of the second rail relative to the first rail without needing to reach behind, improving operational speed and ease by allowing directional control through automatic engagement and disengagement mechanisms.
Implementation Method 1
the positioning member is moved from the initial position to an engaging position through the elastic force released by the elastic member and abuts against the first structure of the first rail
Implementation Method 2
the second structure is adjacent to the first structure, and the second structure comprises an incline or a cambered surface. When the second rail is moved relative to the first rail from the second position to a third position in the first direction, the positioning member is moved from the engaging position to a disengaging position by guidance of the second structure of the first rail
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A slide rail assembly (20) includes a first rail (28), a second rail (30) and a positioning device (32). The first rail (28) includes a first structure (40) and a second structure (42). The second rail (30) is movable relative to the first rail (28). The positioning device (32) is arranged to the second rail (30) and includes an elastic member (66) and a positioning member (64). The elastic member (66) provides an elastic force to the positioning member (64). When the second rail (30) is moved relative to the first rail (28) from a first position (PI) to a second position (P2), the positioning member (64) is moved to an engaging position (S2) through the elastic force and abuts against the first structure (40). When the second rail (30) is moved relative to the first rail (28) from the second position (P2) to a third position (P3), the positioning member (64) is moved from the engaging position (S2) to a disengaging position (S3) and no longer abuts against the first structure (40) by guidance of the second structure (42).