Threaded Sealed Case Assembly for Compact Waterproof Equipment
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Solution Overview
Problem
Existing communication equipment cases face challenges with multiple screws requiring assembly and disassembly, space for screws, and the need for washers or sealants to achieve waterproofing, making maintenance inconvenient and increasing size.
Innovation Solution
A case design with internal and external screw threads on an upper and bottom cover, respectively, forming a sealed accommodating space without the need for screws, washers, or sealants, utilizing a washer for additional sealing and anti-loose glue for enhanced sealing and assembly ease.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If multiple screws are used to lock the case during assembly, then the case can be securely assembled, but it causes inconvenience for disassembly and assembly during maintenance, requires additional space for storing screws, and necessitates washers or sealants for waterproofing
Solution Approach 1:
The patent merges the fastening function and sealing function into a single integrated screw structure. The screw includes both threading for mechanical fastening and an sealing ring groove that accommodates a sealing element, eliminating the need for separate washers or sealants. This integration resolves the contradiction by maintaining assembly security while simplifying maintenance operations.
Solution Approach 2:
The screw is designed as a multi-functional component that simultaneously performs fastening, sealing, and positioning functions. The sealing ring groove is built into the screw structure itself, allowing a single component to achieve multiple objectives that previously required separate parts (screw + washer/sealant), thereby improving maintenance convenience without compromising assembly security.
2Reliability
If multiple screws with washers or sealants are used to achieve waterproof effect, then the case can be sealed against humidity infiltration, but it increases the number of components and space requirements
Solution Approach 1:
The sealing function is merged into the screw structure itself through the integrated sealing ring groove. This eliminates the need for separate washers or sealant applications, reducing the total component count while maintaining reliable waterproof sealing. The sealing element is positioned directly at the sealing surface within the groove, ensuring effective humidity protection.
Solution Approach 2:
The sealing function is extracted from separate components (washers, sealants) and incorporated directly into the screw structure. By taking out the sealing requirement from auxiliary components and integrating it into the primary fastening element, the design reduces component complexity while preserving the waterproof effect.
3Reliability
If washers or sealants are applied with screws to ensure waterproof effect, then sealing reliability is improved, but it increases assembly complexity and requires additional materials
Solution Approach 1:
The sealing ring groove is integrated directly into the screw structure, combining the fastening and sealing functions into a single component. This eliminates the need for separate washer or sealant application steps, simplifying the assembly process while maintaining sealing reliability. The sealing element is pre-positioned in the groove, ensuring consistent sealing performance without additional material application steps.
Solution Approach 2:
The sealing element is pre-installed in the sealing ring groove during screw manufacturing, before the actual assembly process. This preliminary action ensures that the sealing function is already prepared and integrated, eliminating the need for separate sealing material application during assembly and reducing manufacturing complexity.
Data Source
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AI summary
A case with screw thread in a sealed manner for communication equipment includes an upper cover and a bottom cover. The inner surface of the upper cover has an internal screw thread. The outer surface of the bottom cover has an external screw thread. When the external screw thread is fixed with the internal screw thread, the inner surface of the upper cover is in contact with the outer surface of the bottom cover in a sealed state, and the upper cover and the bottom cover form a receiving space. The case provides the following advantages: quickly and repeated assembly and disassembly; no need for any space for bolts so as to minimizes the size; without bolt, no need for washers or sealant; good sealing properties and good waterproof effect so as to prevent water from entering the case.