Electrical Component Fastening Opening Drop Prevention
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Solution Overview
Problem
Existing electrical component devices face difficulties in preventing fastening members from being accidentally dropped into the case during the fastening process, requiring additional components like drop prevention members that increase internal complexity.
Innovation Solution
An electrical component device with a fastening structure that includes a cover member and a fitting detection connector, where the receiving connector is positioned below the fastening part in the gravity direction, equipped with a fastening member receiving surface that extends to the inner wall surface, preventing fastening members from dropping into the case without the need for a separate drop prevention member.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a cylindrical drop prevention member is provided in the case to prevent bolts from being dropped, then the bolt drop prevention is improved, but the device complexity increases due to additional components
Solution Approach 1:
The invention extracts the drop prevention function from a separate cylindrical member and integrates it into the case wall structure itself. The recessed portion is directly formed in the case wall at the fastening opening, eliminating the need for a separate drop prevention component while maintaining the function of preventing fastening members from falling into the case interior.
Solution Approach 2:
The invention merges the drop prevention function with the case wall structure by forming a recessed portion directly in the wall surface. This combines the structural support function of the case wall with the drop prevention function, reducing overall device complexity while maintaining reliability.
2Object-affected harmful factors
If a separate drop prevention member is added to prevent fastening members from dropping, then the protection against harmful factors is improved, but the manufacturing complexity increases
Solution Approach 1:
The invention extracts the drop prevention function from a separate manufacturable component and integrates it directly into the case wall through molding or forming processes, simplifying the overall manufacturing process by reducing the number of separate parts that need to be produced and assembled.
Solution Approach 2:
The case wall structure is designed to serve multiple functions: providing structural support, forming the enclosure, and preventing fastening member drops through the integrated recessed portion. This multi-functionality reduces the total number of components and simplifies manufacturing.
Data Source
AI summary
An electrical component device includes an internal conductor, a case and a fitting detection connector. The internal conductor is connected to an electrical component and includes a fastening part configured to be fastened with an external conductor. The case accommodates the electrical component and the internal conductor and has a wall surface formed with a fastening opening for fastening the external conductor to the internal conductor. The fitting detection connector detects that a cover member closing the fastening opening is installed to the fastening opening and includes a receiving connector which is fixed inside the case and a detachable connector which is attached on the cover member. The wall surface extends in the gravity direction. The receiving connector has a receiving surface extending to a vicinity of an inner wall surface of the case and positioned below the fastening part in the gravity direction.