High-Voltage Safety Cover with Integrated Detection
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Solution Overview
Problem
Existing safety devices for high-voltage components in vehicles, such as hybrid and electric cars, are complicated and difficult to adjust, leading to potential handling errors during service work due to the precise positioning requirements of micro switches and receiving connectors for detecting the opening/closing state of safety covers.
Innovation Solution
A safety device with a low-voltage circuit and a selecting unit using detachable connector members, where a fixed-side and movable-side connector members are used to control the power conduction/shut-off state, allowing for a simple and compact structure that prevents handling errors by ensuring the cover is properly closed before work on high-voltage components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a micro switch or receiving connector is used to detect cover opening/closing state, then the safety function is achieved, but the device structure becomes complicated and positioning becomes difficult
Solution Approach 1:
The patent combines the cover structure with the detection function by integrating the detecting unit directly into the cover body. The cover includes a protruding portion that directly engages with the detecting unit, eliminating the need for separate micro switches or receiving connectors. This integration simplifies the overall structure while maintaining the safety function of detecting cover opening/closing states.
Solution Approach 2:
The cover serves multiple functions: it provides physical protection for the high-voltage component and simultaneously acts as the detection mechanism itself through its integrated detecting unit. The protruding portion of the cover directly interacts with the detecting unit to signal opening/closing states, making the cover a multi-functional component that eliminates the need for separate detection devices.
2Reliability
If micro switch or receiving connector is used for detection, then safety detection is achieved, but precise positioning is required making adjustment difficult
Solution Approach 1:
By merging the detection function into the cover structure itself, the patent eliminates the need for precise positioning of separate detection components. The detecting unit is positioned relative to the cover's protruding portion, which moves naturally with cover opening/closing actions. This integration removes the adjustment complexity associated with positioning independent micro switches or connectors.
Solution Approach 2:
The cover's own structural movement (opening/closing) directly activates the detecting unit through its protruding portion. The system uses the cover's natural motion to trigger detection, eliminating the need for external adjustment mechanisms or precise positioning of separate detection components. The structure is self-adjusting through its inherent geometry.
3Reliability
If a complex detection mechanism is used, then detection reliability is improved, but the overall device size increases
Solution Approach 1:
The patent merges the detection mechanism into the cover structure, using the cover's own material and geometry to create the detecting unit. This integration eliminates the need for separate detection components, thereby maintaining detection reliability while minimizing the increase in device volume. The detecting unit is formed as part of the cover rather than as an add-on component.
Data Source
AI summary
A safety device for a high-voltage component including a cover that covers at least a part of the high-voltage component, a low-voltage circuit that controls a conduction/shut-off state of an electric circuit for supplying power to the high-voltage component, and a selecting unit that selects the conduction/shut-off state of the low-voltage circuit by an operation accompanying an attachment/removal work of the cover.