Position-Limit Mechanism for Chassis Module Anti-Loosening
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Solution Overview
Problem
Current electronic equipment mounting systems require complex disassembly and assembly processes and are prone to module card loosening due to environmental factors like vibration, leading to functional failures.
Innovation Solution
A position-limit mechanism incorporating a clip retainer and a resilient assembly that limits the movement of a mounting bracket, preventing module card loosening by resiliently pressing the mounting bracket against the frame.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If screws are used to secure the mounting bracket to the frame, then the mounting bracket can be firmly fixed, but the disassembly and assembly process becomes complex
Solution Approach 1:
The fixing mechanism is segmented into a snap-fit component and a friction-fit component. The snap-fit portion provides immediate secure attachment, while the friction-fit portion allows for easy adjustment and removal, eliminating the need for complex screw operations.
Solution Approach 2:
The screw-based mechanical fastening system is replaced with a snap-fit friction-fit mechanism. This substitution maintains the securing function while dramatically simplifying the assembly and disassembly processes, transforming a multi-step screw operation into a single-action snap-in/snap-out system.
2Area of stationary object
If a limit member is used to limit the movement of the mounting bracket, then the installation width is reduced, but the module card may still loosen under environmental factors like vibration
Solution Approach 1:
The fixing mechanism transitions from a rigid limit member to a compliant friction-fit structure. This parameter change allows the fixing component to adapt to movement variations while maintaining secure attachment, preventing loosening under vibration without requiring excessive installation width.
Solution Approach 2:
The friction-fit mechanism provides beforehand cushioning by allowing controlled movement absorption. The friction engagement acts as a buffer that prevents sudden loosening events caused by vibration, while the snap-fit provides primary positional restraint.
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 position-limit mechanism effectively reduces the probability of module card loosening, ensuring stable operation by securely retaining the mounting bracket and module card, even under environmental stressors.
Implementation Method 1
a resilient assembly (20) arranged on the limit part (12) and protruding into the receiving space (15), the resilient assembly (20) configured to resiliently press the one end of the mounting bracket (40) in the receiving space (15)
Data Source
AI summary
A position-limit mechanism includes a clip retainer and a resilient assembly. The clip retainer includes a fix part, a limit part, a connect part, and a stop part connected in sequence, the fix connected to a frame, a receiving space is defined by the connect part, the stop part, and the limit part, the receiving space is configured for accommodating a mounting bracket, one end of the mounting bracket extends into the receiving space. The resilient assembly is arranged on the limit part and protrudes into the receiving space, the resilient assembly is configured to resiliently press the one end of the mounting bracket in the receiving space. A chassis including the clip retainer as described above is also disclosed.