Wire Connection Device
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Solution Overview
Problem
The connection between the internal wire and power cord in cooking appliances is prone to short circuits, leading to high resistance and potential fires, posing a fire hazard.
Innovation Solution
A wire connection device with a fuse and a fire-resistant sleeve is used, where the fuse blows out in case of a short circuit to prevent fire, and the sleeve protects the connection from heat and flames, while tightening members ensure secure insulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the internal wire and power cord are directly connected, then the device is simple and easy to manufacture, but the connection is prone to short circuits and fire hazards
Solution Approach 1:
The patent introduces a fuse as an intermediary component between the internal wire and power cord. The fuse acts as a mediator that protects the connection by blowing out during short circuits, preventing fire hazards while maintaining a relatively simple overall structure.
Solution Approach 2:
The fuse is designed as a disposable protective element that sacrifices itself (blows out) when a short circuit occurs. This cheap, replaceable component prevents damage to the more expensive and permanent wiring infrastructure, addressing the fire safety concern without requiring complex permanent protective structures.
2Reliability
If a fuse is added to prevent short circuits, then fire safety is improved, but the device complexity increases
Solution Approach 1:
The wire connection is segmented into distinct functional zones: the power cord connection area, the fuse location, and the internal wire connection area. This segmentation allows each component to perform its specific function independently, making the protective mechanism clear and manageable without excessive complexity.
Solution Approach 2:
The fire-resistant sleeve adds a spatial dimension to the protection mechanism by providing three-dimensional coverage around the fuse and connections. This dimensional approach to protection (surrounding the critical components) achieves comprehensive fire safety without requiring complex multi-component systems.
3Reliability
If a fire-resistant sleeve is added to protect the connection, then fire safety is improved, but the device complexity and manufacturing difficulty increase
Solution Approach 1:
The fire-resistant sleeve is designed as a flexible protective covering that can be sleeved over the existing wire connection structure. This film-like or shell-like approach provides comprehensive fire resistance without requiring rigid, complex assemblies, thereby maintaining ease of manufacture and installation.
Solution Approach 2:
The fire-resistant sleeve is nested over the fuse and wire connections, creating a layered protective structure. This nesting approach allows the protective element to be added without disrupting the existing wiring layout, simplifying the manufacturing process by enabling sequential assembly rather than requiring simultaneous integration of multiple protective components.
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 effectively prevents short circuits and fires by disconnecting the circuit and insulating the connection, enhancing safety and reducing the risk of fire hazards in cooking appliances.
Implementation Method 1
the connection between the power cord and the internal wire of the cooking appliance is prone to short circuit during use, making the circuit resistance too high, resulting in a high temperature
Implementation Method 2
a fire-resistant sleeve that is sleeved over the outer surface of the fuse and the first and second ends of the fuse
Data Source
AI summary
The present application discloses a wire connection device and a cable guard of a cooking appliance. The wire connection device of the cooking appliance includes a fuse, a first end used to connect to an internal wire of the cooking appliance and a second end used to connect to a power cord of the cooking appliance, and a fire-resistant sleeve, being sleeved over the fuse and the first and second ends of the fuse. Further, the fuse is disposed between the internal wire and the power cord of the cooking appliance to prevent a short-circuit fire at the wire connection. The fire-resistant sleeve is sleeved over the outer surface of the wire connection to protect the fuse, the connection between the fuse and the internal wire, and the connection between the fuse and the power cord, which prevents the wire connection from catching fire.