Electric Shock Prevention Cap Structure for Paired Terminal Fittings
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Solution Overview
Problem
Conventional electric shock prevention caps for terminal fittings have a small contact area and holding force, leading to easy detachment and require multiple caps for pairs of terminal fittings, complicating operations and leaving gaps that need additional protection.
Innovation Solution
An electric shock prevention cap with paired peripheral edge covering portions and an inner intrusion preventing portion that couples these portions together, providing a large overlapping area and secure mounting on terminal body portions, while preventing access to facing surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a protection cap is mounted on the terminal body portion to cover the peripheral edge, then electric shock prevention is achieved, but the contact area is small and holding force is weak causing easy detachment
Solution Approach 1:
The protection cap is divided into a pair of peripheral edge covering portions that can be mounted on respective terminal body portions. Each portion covers the peripheral edge independently, providing both electric shock prevention and sufficient contact area for strong holding force without detachment
Solution Approach 2:
The protection cap structure transitions from a single flat plate to a three-dimensional configuration with peripheral edge covering portions that wrap around the terminal body portions. This dimensional change increases the contact area between the cap and terminal, thereby strengthening the holding force while maintaining electric shock prevention functionality
2Reliability
If separate protection caps are mounted on each terminal body portion, then electric shock prevention is achieved, but the number of caps increases and mounting operation becomes cumbersome
Solution Approach 1:
The invention merges two separate protection caps into a single integrated protection cap structure consisting of a pair of peripheral edge covering portions. This unified structure can be mounted on both terminal body portions simultaneously, reducing the number of components and simplifying the mounting operation while maintaining comprehensive electric shock prevention coverage
3Reliability
If protection caps are mounted on terminal body portions, then peripheral edges are covered, but facing surfaces between terminal body portions remain exposed requiring additional protection
Solution Approach 1:
The protection cap is designed with multi-functionality: the peripheral edge covering portions not only cover the peripheral edges for electric shock prevention but also extend to cover the facing surfaces between terminal body portions. This single structure performs multiple protection functions, eliminating the need for additional protective elements and reducing overall device complexity
Data Source
AI summary
An electric shock prevention cap of a novel structure and a connector with electric shock prevention cap are disclosed. The electric shock prevention cap can be easily mounted on a pair of terminal body portions, obtain a large holding force and prevent the pair of terminal body portions from contacting facing surfaces. An electric shock prevention cap 10 is provided with a pair of peripheral edge covering portions 12, 12 for covering peripheral edges of tip parts of a pair of terminal body portions 42, 42 by being mounted on the pair of terminal body portions 42, 42 in the form of flat plates and disposed side by side in a plate thickness direction, and an inner intrusion preventing portion 20 provided between the pair of peripheral edge covering portions 12, 12 to couple the pair of peripheral edge covering portions 12, 12 to each other.