Electricity Meter Housing with Internal Locking and External Release
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Solution Overview
Problem
Existing electricity meters face challenges in providing secure protection for internal components while ensuring easy assembly and allowing for an opening option, often requiring precise angular positioning and multiple screws for assembly.
Innovation Solution
A housing design comprising a lower and upper part with internal connecting elements forming a detent connection through translational movement and externally accessible connecting means, featuring locking and release mechanisms for simplified assembly and secure closure, and a pivot axis for easy unfolding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional snap-fit connections are used with angular positioning requirements, then secure protection is achieved, but assembly complexity increases and ease of operation deteriorates
Solution Approach 1:
The patent inverts the traditional assembly sequence by eliminating the need for angular positioning. Instead of requiring precise angular alignment followed by translational movement, the housing parts are designed to connect through pure translational movement with automatic angular alignment via the detent elements, reversing the complexity from the operator to the self-aligning mechanism.
Solution Approach 2:
The detent elements automatically perform the angular positioning function during translational assembly, making the system self-aligning. The connecting elements guide the housing parts into correct orientation without requiring external positioning actions, enabling automated assembly and improving ease of operation while maintaining secure protection.
2Reliability
If multiple screws are used for housing connection, then secure closure is achieved, but device complexity and assembly time increase
Solution Approach 1:
The patent merges the functions of multiple screws into a single snap-fit connection mechanism. The connecting elements with detent elements provide both the securing function and the positioning function that would otherwise require multiple fasteners, reducing device complexity while maintaining secure closure through the elastic engagement of the detent elements.
Solution Approach 2:
The patent extracts the essential securing function from complex multi-screw assemblies and implements it through simplified connecting elements with detent mechanisms. This extraction removes unnecessary complexity while preserving the secure closure requirement through the elastic retention provided by the detent elements.
3Reliability
If precise angular positioning is required during assembly, then secure connection is achieved, but manufacturing precision requirements increase
Solution Approach 1:
The patent inverts the precision requirement by designing the connecting elements to create their own positioning references during assembly. Instead of requiring pre-manufactured precise angular features, the detent elements and housing geometry work together to automatically establish correct positioning through the assembly motion itself, reducing manufacturing precision requirements while maintaining connection security.
Solution Approach 2:
The patent transitions from requiring precision in angular orientation to requiring precision only in translational dimensions. The detent elements convert the angular positioning problem into a translational guide problem, where the connecting elements guide the housing parts along a defined path that automatically achieves correct angular alignment, thereby reducing overall manufacturing precision requirements.
4Ease of operation
If housing parts are designed for easy translational assembly, then ease of operation improves, but securing reliability may deteriorate
Solution Approach 1:
The connecting elements with detent elements perform dual functions: they guide the easy translational assembly motion while simultaneously creating secure mechanical engagement. The elastic deformation and recovery of the detent elements provide automatic securing during the simple translational movement, ensuring both ease of operation and securing reliability without compromising either aspect.
Data Source
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AI summary
Electricity meter with a housing composed of a lower housing part and an upper housing part, wherein the lower housing part and the upper housing part are held together on a first side of the housing by connecting elements arranged inside the housing and on a second side of the housing opposite the first side by at least one externally accessible connecting means, characterized in that the connecting elements have locking elements which form a locking connection when the two housing parts are assembled in a translational movement, as well as release elements which release the locking connection when the two housing parts are unfolded on the second side of the housing.