Electrical apparatus
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Solution Overview
Problem
In electrical appliances with pivoting parts, the need to pass wires through hinge holes complicates assembly and disassembly, limits the number of power consumption devices, and causes wire fatigue due to reciprocation during pivoting, reducing reliability of power transmission.
Innovation Solution
An electrical apparatus utilizing electromagnetic coupling between a first coil on the main body and a second coil on the pivotal part, where the first coil passes through the second coil to maintain constant relative position during pivoting, enabling wireless power supply between the main body and the pivotal part, such as a refrigerator door, without the need for wires through the hinge.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wires are passed through hinge holes to transmit power between pivoting parts, then power transmission is achieved, but assembly and disassembly processes become complicated
Solution Approach 1:
The patent removes wires from the hinge hole area entirely and replaces them with wireless power transmission coils. The transmitting coil is mounted on the main body while the receiving coil is mounted on the pivotal part, extracting the power transmission function from the mechanical hinge structure and enabling independent assembly and disassembly of the hinge without wire handling.
Solution Approach 2:
The patent replaces the mechanical wire-based power transmission system with an electromagnetic field-based wireless power transmission system. By using electromagnetic coupling between coils instead of physical wire connections, the system eliminates the need for wires to pass through the hinge, simplifying the mechanical structure and assembly process.
2Reliability
If wires are passed through hinge holes, then power transmission is established, but the hinge hole cannot accommodate more wires, limiting the number of power consumption devices
Solution Approach 1:
By extracting wires from the hinge hole and implementing wireless power transmission, the patent removes the spatial constraint that limited the number of wires that could pass through the hinge. This allows multiple receiving coils to be mounted on the pivotal part without increasing wire congestion in the hinge hole, thereby supporting multiple power consumption devices.
Solution Approach 2:
The wireless power transmission system provides a universal power supply solution that can support multiple power consumption devices simultaneously. The transmitting coil on the main body can wirelessly power multiple receiving coils mounted on different parts of the pivotal part, enabling the hinge to support multiple functions and devices without being limited by wire capacity.
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
This solution simplifies assembly and disassembly, eliminates wire fatigue, and increases the reliability and flexibility of power supply by allowing wireless transmission of power between the main body and pivotal parts without size limitations in the hinge hole.
Implementation Method 1
electromagnetic coupling is formed between a first coil mounted on a main body and a second coil mounted on a pivotal part, realizing wireless power supply between the main body and the pivotal part
Data Source
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AI summary
An electrical apparatus comprises: a main body; a pivotal part pivotally connected to the main body; a first coil mounted on the main body; and a second coil mounted on the pivotal part. The first coil at least partly passes through the second coil to form electromagnetic coupling between the first coil and the second coil, so that power is wirelessly supplied between the main body and the pivot part.