Terminal Block Locking Mechanism for High-Force Test Position Transition
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Solution Overview
Problem
Existing connecting devices in the field of emergency power supply are structurally complex and not always reliable, making it difficult to safely and easily reach both the test and connected positions, especially when high forces are involved.
Innovation Solution
A connecting device with a simple structure featuring a locking mechanism that clearly indicates the locking position, allowing easy access to the test position and requiring a higher push-in force to reach the connected position, which can absorb high forces effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a locking device with a locking slide is used to lock the connecting device in the test position, then the device can be locked reliably, but the structure becomes relatively complicated
Solution Approach 1:
The locking device is divided into separate functional components: a locking element with a locking projection, a locking slide with a locking groove, and a return spring. This segmentation allows each component to perform its specific function independently, simplifying the overall structure while maintaining reliability.
Solution Approach 2:
The return spring automatically returns the locking slide to its initial position after the locking projection passes through the locking groove, without requiring additional actuation mechanisms. This self-service feature reduces structural complexity while ensuring reliable resetting of the locking mechanism.
2Ease of operation
If the locking position is reached by overcoming frictional force between elements of the locking device, then the locking can be released, but the structure becomes more complex
Solution Approach 1:
The locking projection is designed to automatically engage with the locking groove when the connecting device is pushed into the test position, without requiring additional locking actions. This preliminary action simplifies the operation while ensuring reliable locking.
Solution Approach 2:
The locking and releasing functions are extracted as separate mechanical actions: locking occurs automatically through engagement of the projection and groove, while releasing is achieved by a simple pushing motion that overcomes the spring force. This separation simplifies the overall operation.
3Force
If a higher push-in force is required to reach the connected position from the test position, then high forces can be absorbed, but the operation becomes more difficult
Solution Approach 1:
The patent uses visual indicators (different colors or markings on the housing) to clearly distinguish between the test position and the connected position. This helps the operator understand when each position is reached, making the operation easier despite the higher force required.
Solution Approach 2:
The locking device provides tactile feedback through the engagement of the locking projection with the locking groove, and visual feedback through position indicators. This feedback mechanism helps the operator confirm when the test position is reached and when the connected position is achieved, facilitating proper operation.
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
The solution provides a structurally simple and stable connecting device that ensures safe and easy transition between test and connected positions, even under high force conditions, while maintaining reliability and cost-effectiveness.
Implementation Method 1
the locked position can be released solely by translational sliding of the connecting device by overcoming a frictional force between elements of the locking device
Data Source
Figure 1a~1c
Figure 2a~2c
Figure 3
AI summary
Terminal block connecting apparatus comprises two test terminal blocks connected with two supports for electrical engagement when the supports are in intermediate condition between disengaged and engaged conditions, and carrier (4) supporting the second test terminal block for displacement relative to associated support where the test terminal blocks remain in electrical engagement during displacement of the supports between intermediate test condition and final connected condition. Terminal block connecting apparatus comprises two supports (6, 3) supporting two main terminal block assemblies and being linearly displaceable in a given direction between successive disconnected, intermediate, and connected positions. The contacts of the terminal blocks are in engagement when the supports are in the connected condition. A first test terminal block (9) is connected with the support. A second test terminal block (8) is also provided. The test terminal blocks have pin and socket contacts. A carrier supports the second test terminal block at a first position on the other support for engagement with the first test terminal block when the supports are in the test position. It displaces the second test terminal block toward a second position relative to the other support when the supports are displaced between the test and connected conditions. The test terminal blocks are maintained in electrical engagement during the displacement of the second test terminal block to second position. A friction retainer (10) normally resists movement of the carrier from one position.