Electrical connection assembly and electrical apparatus
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Solution Overview
Problem
In electrical apparatuses where movable components are connected to power supplies, existing connection modules risk electric shock or short circuits due to exposed terminals when the movable parts are pulled out, as the elastic contact arms can be accidentally contacted by people or objects.
Innovation Solution
An electrical connection assembly featuring a first module with a normally open switch on a fixed member and a second module with contact pads on a moving member, where the switch is driven to a closed state upon contact and automatically resets to open when the components separate, ensuring disconnection from the power supply.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If elastic contact arms are exposed for easy connection, then ease of operation is improved, but safety deteriorates due to risk of electric shock or short circuit
Solution Approach 1:
The patent applies preliminary anti-action by using a normally open switch that automatically closes when the movable member is inserted, creating a protective state before the connection is fully made. This pre-established safety mechanism ensures that even if contact arms are exposed, the circuit remains open and safe until proper insertion occurs.
Solution Approach 2:
The normally open switch acts as an intermediary between the power supply and the exposed elastic contact arms. It mediates the connection process by controlling circuit closure based on insertion detection, preventing direct exposure risks while maintaining ease of connection through automatic operation.
2Reliability
If terminals are always connected for continuous power supply, then reliability is improved, but safety deteriorates when movable parts are pulled out
Solution Approach 1:
The patent applies dynamics by making the switch state changeable based on insertion status. The normally open switch transitions from open to closed state dynamically when the movable member is inserted, and returns to open state when pulled out. This dynamic control ensures continuous power supply during proper operation while automatically preventing short circuits during removal.
Solution Approach 2:
The system implements feedback through the switch controller that detects the insertion state and automatically controls the normally open switch accordingly. When insertion is detected, the controller closes the switch to enable power supply; when removed, it opens the switch to prevent short circuits, creating a self-regulating safety mechanism.
3Object-affected harmful factors
If automatic switch control is added for safety, then safety is improved, but device complexity increases
Solution Approach 1:
The patent applies self-service by designing a system where the switch controller automatically detects insertion status and controls the normally open switch without requiring external intervention. The movable member itself triggers the safety mechanism through its insertion motion, making the system self-regulating and minimizing the need for additional control components.
Data Source
AI summary
An electrical connection assembly includes a first electrical connection module configured to be mounted on a fixed member and a second electrical connection module configured to be mounted on a moving member. The first electrical connection module has a first terminal and a second terminal. The first electrical connection module has a normally open switch. The second electrical connection module has a first contact pad and a second contact pad configured to be electrically connected with the first terminal and the second terminal, respectively. The second electrical connection module has a switch controller adapted to drive the normally open switch to a closed state when the first contact pad and the second contact pad are moved to a contact position in which the first contact pad and the second contact pad are in electrical contact with the first terminal and the second terminal, respectively.