Control Box Cover Structure With Torsion Spring Locking Mechanism
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Solution Overview
Problem
Existing cover structures for control boxes are cumbersome and time-consuming to disassemble and assemble, and they often require tools and risk losing bolts during the process.
Innovation Solution
A cover structure for a control box that includes a base with a limiting part, a cover body, a knob, and a torsion spring. The cover body is movably connected to the base, and the knob is rotatably connected to the cover body. The torsion spring generates pre-torque, allowing the cover structure to be quickly locked and unlocked without the need for screws.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the cover plate is locked onto the box body by a plurality of bolts, then the connection strength is improved, but the disassembly and assembly process becomes cumbersome and time-consuming
Solution Approach 1:
The locking mechanism is segmented into modular components: a cover body with limiting plates, a separate knob with stop arms, and a torsion spring. This segmentation allows the locking function to be achieved through simple snap-fit engagement rather than multiple bolts, enabling quick assembly and disassembly while maintaining connection strength.
Solution Approach 2:
The torsion spring provides self-locking functionality by automatically engaging the stop arm with the limiting part when the cover body is installed. The spring maintains constant locking force without requiring tools or multiple fasteners, and enables tool-free removal by simply rotating the knob to release the stop arm.
2Reliability
If the cover plate is locked onto the box body by a plurality of bolts, then the connection reliability is improved, but the risk of losing bolts during disassembly and assembly increases
Solution Approach 1:
The design extracts the locking function from traditional bolts and implements it through an integrated knob mechanism. The stop arm on the knob directly engages with the limiting part on the cover body, eliminating the need for separate bolts that could be lost during assembly or disassembly operations.
Solution Approach 2:
The locking components (knob, stop arm, spring) are merged into a single integrated assembly that attaches to the cover body. This consolidation ensures all locking elements remain attached to each other throughout the assembly and disassembly process, completely preventing component loss.
3Stability of the object's composition
If a traditional bolt-based locking mechanism is used, then the structural stability is improved, but the device complexity increases
Solution Approach 1:
The locking mechanism transitions from a static bolt-based system to a dynamic spring-loaded system. The torsion spring automatically adjusts the stop arm position to maintain optimal engagement with the limiting part, providing adaptive structural stability while simplifying the overall mechanism through motion-based locking rather than multiple fixed components.
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 cover structure can be easily installed and removed without using screws, simplifying the manufacturing process and reducing assembly time, while also preventing the loss of bolts during disassembly and assembly.
Implementation Method 1
the torsion spring includes a main body, a first arm extended from an end of the main body and a second arm extended from another end of the main body. The first arm is fixed to the cover body, and the second arm is fixed to the knob, and a pre-torque is being generated at the main body.
Implementation Method 2
a pre-torque is being generated at the main body. When the knob is rotated by an external force, the stop arm is released from the limiting part to unlock the cover structure from the base. When the external force is removed, the knob restores to an original position by the pre-torque.
Data Source
AI summary
A cover structure of a control box is disclosed. The control box includes a base with a limiting part, the cover structure includes a cover body, a knob and a torsion spring, the cover body is connected to the base, the knob is rotatably connected to the cover body and has a stop arm stopped at the limiting part, two ends of the torsion spring are fixed to the cover body and the knob respectively to generate a pre-torque. When the knob is rotated by an external force, the stop arm is released from the limiting part to unlock the cover structure from the base, and when the external force is removed, the knob restores to original position by the pre-torque. Therefore, the cover structure may be removed from the base quickly to facilitate an operator's use and maintenance.