Bridging Plug Locking Mechanism for Secure Electricity Meter Exchange
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional electricity meter connection systems lack secure mechanisms to prevent unintentional disconnection of energy supply during meter exchange and fail to protect against electrical misuses, such as arc formation when bridging plugs are removed without an electricity meter.
Innovation Solution
The proposed system incorporates a bridging plug with a locking element and a spring-loaded contact protection frame, which locks firmly to the terminal block when an electricity meter is removed, preventing unintentional disconnection and arc formation, and includes a dummy plug for tamper-proof disconnection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional bridging plug is designed to be simply pluggable and removable, then ease of operation is improved, but reliability deteriorates due to unintentional disconnection during meter exchange
Solution Approach 1:
The locking element is designed as a spring-loaded mechanism that dynamically adapts its state based on the presence of an electricity meter. When no meter is present, the locking element engages with the terminal block to prevent disconnection. When a meter is installed, the locking element is forced into an unlocked state, allowing safe removal. This dynamic behavior resolves the contradiction by providing both security and operational ease at different stages.
Solution Approach 2:
The system incorporates feedback through the interaction between the locking element and the electricity meter. The meter's presence automatically triggers the unlocking mechanism via its guide contour, creating a feedback loop that ensures the bridging plug can only be removed when appropriate (i.e., when a meter is installed). This feedback mechanism prevents unintentional disconnection while maintaining ease of operation when needed.
2Ease of operation
If the bridging plug can be removed without an electricity meter present, then ease of operation is improved, but harmful factors increase due to arc formation and electrical misuse
Solution Approach 1:
The locking element provides preliminary anti-action by preventing removal of the bridging plug when no electricity meter is present. The spring-loaded mechanism is pre-configured to engage with the terminal block, creating a physical barrier that stops unauthorized or unsafe removal attempts. This preliminary protective action eliminates the harmful effect of arc formation while preserving operational flexibility when properly configured.
Solution Approach 2:
The locking element acts as an intermediary mechanism between the bridging plug and the terminal block. It mediates the interaction by allowing connection and controlled removal only under safe conditions (when a meter is present), while blocking removal under hazardous conditions. This intermediary function resolves the contradiction by filtering out unsafe operations while permitting safe ones.
3Reliability
If a locking mechanism is added to the bridging plug, then reliability is improved, but device complexity increases
Solution Approach 1:
The locking element is designed as a self-service mechanism that automatically engages and disengages based on the presence of an electricity meter. The spring-loaded design provides self-actuating locking without requiring external control systems, motors, or complex actuators. This self-service approach achieves reliable locking while minimizing added complexity, as the mechanism uses simple mechanical spring force and geometric interaction with the meter's guide contour.
Solution Approach 2:
The locking element is implemented as a simple, inexpensive spring-loaded component that can be easily manufactured and integrated into the bridging plug. Rather than using complex electronic locking systems or expensive mechanical locks, the invention employs a straightforward spring mechanism that provides sufficient reliability at low cost and low complexity. The simplicity of the design allows for easy manufacturing and maintenance.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Ensures a safer and more secure electricity meter exchange process by preventing unintentional disconnection and electrical misuses, while maintaining a stable energy supply and protecting against electrical hazards.
Implementation Method 1
a spring-loaded contact protection frame, which locks firmly to the terminal block when an electricity meter is removed, preventing unintentional disconnection and arc formation
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The invention relates to an electricity meter connection system (1) with a terminal block (3) and a bridging plug (4) for plugging onto the terminal block (3). The terminal block (3) has an insulating material housing (9), conductor connections for connecting electric lines, and electricity meter connection terminals for connecting, in an electrically conductive manner, conductor connections to corresponding connection contacts (5) of an electricity meter (2) arranged on the terminal block (3). The bridging plug (4) has bridging contacts (35) for connecting to corresponding conductor connections and electricity meter connection terminals of the terminal block (3) in an electrically conductive manner. The bridging plug (4) has at least one locking element (11) which has a locking contour that is designed to lock with the terminal block (3) when placed on the terminal block (3). The locking element (11) is arranged such that a portion of an electricity meter (2) plugged onto the terminal block (3) interacts with the locking element (11) in order to release or prevent the locking element (11) from locking with the terminal block (3).