Polarized Quick Plug Structure for Replaceable Fuse Access
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Solution Overview
Problem
Conventional electricity plugs lack a quick and efficient method for replacing damaged fuses and have difficulty with cable detachment and installation due to fixed positioning and materials like glue or plastic, leading to maintenance challenges.
Innovation Solution
A polarized quick plug design featuring two fuse compartments and a movable plate for easy fuse exchange, along with a rear cover that secures the cable without stripping, allowing for perpendicular installation and secure attachment, facilitating maintenance and waterproofing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of repair
If a conventional electricity plug has only one fuse and fixed cable positioning, then the structure is simple, but the maintenance efficiency is low and cable replacement is difficult
Solution Approach 1:
The plug body is divided into separate functional modules: the inner seat with fuse compartments, the cable receiving groove with rear cover, and the housing. This segmentation allows the fuse to be independently replaced without affecting the cable connection, and the cable can be installed or removed independently from the housing, significantly improving maintenance efficiency
Solution Approach 2:
The inner seat is pre-designed with two fuse compartments (first and second fuse rooms) and predetermined cable routing paths with breaking plates. This preliminary preparation allows users to quickly exchange fuses and install cables without complex preparation steps, improving repair speed while maintaining a relatively simple overall structure
2Ease of operation
If the cable is fixed by glue or plastic material in conventional plugs, then the cable is securely held, but the cable cannot be easily detached or installed during maintenance
Solution Approach 1:
The cable fixing mechanism transitions from a static permanent bond (glue or plastic) to a dynamic reversible system. The rear cover can be removed to allow cable installation/removal, and the breaking plate can penetrate the insulation layer to create electrical connection. This dynamic design enables easy cable replacement while maintaining secure connection during use
Solution Approach 2:
The cable fixation function is extracted from the main housing structure and placed in a separate rear cover assembly. This allows the cable to be installed or removed by simply detaching the rear cover, without needing to open the entire housing or use tools, improving ease of operation while maintaining connection reliability through the breaking plate penetration mechanism
3Productivity
If the inner seat has space for two fuses, then maintenance efficiency is improved, but the device complexity increases
Solution Approach 1:
The inner seat is designed with universal symmetry, having identical first and second fuse rooms on opposite sides, and the first and second breaking plates have corresponding structures. This multi-functional design allows either fuse compartment to serve as the working fuse or spare fuse, and either breaking plate can handle cable connection, improving maintenance efficiency while keeping the structural complexity manageable through repetition of proven design elements
Data Source
AI summary
The present invention provides a polarized quick plug having replaceable fuse. The cable is fixed on the rear end of the inner seat by the breaking plates and the rear cover, so the inner seat has sufficient space to receive two fuses. The housing further has a window corresponding to the two fuses, and a movable plate is arranged at the window to selectively cover the window. The user can open the movable plate to exchange the working fuse and the spare fuse.