Self-Clamping Shell Hook and Slot Mechanism for Electronic Device Assembly
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Solution Overview
Problem
The existing methods for assembling exterior shells in electronic devices require complex processes and increased manufacturing costs due to the need for holding pressure jigs to ensure waterproofing, shakeproofing, and impact protection, which complicates the assembly and increases costs.
Innovation Solution
The shell assembly uses a hook and slot mechanism that eliminates the need for a holding pressure jig by providing the necessary pressure for adhesive solidification, allowing the upper and lower shells to be securely connected without external clamping, thereby simplifying the assembly process and reducing manufacturing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a holding pressure jig is used to ensure waterproofing and assembly stability, then the assembly reliability is improved, but the device complexity and manufacturing cost increase
Solution Approach 1:
The shell members are designed with self-clamping features where protrusions on one shell member fit into recesses on the other shell member, creating automatic mechanical interlocking and self-clamping during assembly. This eliminates the need for external holding pressure jigs while maintaining assembly reliability through the self-servicing clamping mechanism.
Solution Approach 2:
The holding pressure jig is completely removed from the assembly process. The patent extracts this external supporting device by designing the shell members themselves to provide the clamping function through their geometric features (protrusions and recesses), thereby simplifying the assembly process while maintaining reliability.
2Manufacturing precision
If a holding pressure jig is used to ensure adhesive solidification, then the manufacturing precision is improved, but the productivity decreases due to complex assembly process
Solution Approach 1:
The shell members are pre-designed with integrated protrusions and recesses that provide clamping force during assembly. This preliminary structural design ensures that adhesive solidification occurs under stable self-clamping conditions without requiring external jigs, thereby maintaining manufacturing precision while improving productivity.
Solution Approach 2:
The self-clamping mechanism provides automatic pressure application during assembly, ensuring stable adhesive solidification without external intervention. This self-servicing feature eliminates the need for holding pressure jigs, simplifying the process and improving assembly efficiency while maintaining precision.
3Strength
If traditional shell assembly methods are used with external clamping, then the shell strength is ensured, but the ease of manufacture deteriorates
Solution Approach 1:
The shell members incorporate self-clamping protrusions and recesses that automatically engage during assembly, providing necessary clamping force to ensure shell strength. This self-servicing design eliminates complex external clamping equipment, making the manufacturing process easier and more straightforward.
Solution Approach 2:
The patent combines geometric features (protrusions and recesses) with adhesive materials to create a composite joining system. The geometric features provide mechanical interlocking and self-clamping, while the adhesive provides bonding strength, together ensuring shell strength while simplifying the assembly process.
Data Source
AI summary
A two-parts shell or housing assembly not requiring a pressure jig for assembly includes an upper shell and a lower shell. The upper shell includes a first surface and a second surface. Hooks are disposed on edges of the second surface. The lower shell includes an inner bottom surface and a first blocking surface. A stepped portion is formed at the connection portion between the inner bottom surface and the first blocking surface. The stepped portion includes a first side and a second side. The upper shell is disposed on the second side. The first side defines slots corresponding to the hooks. A receiving space is formed by the hook, the stepped portion, and the second side for receiving adhesive. An electronic device is also provided.