Electric blanket plug connector
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Solution Overview
Problem
Existing electric blanket plug connectors connected using metal screws or bolts are prone to safety hazards due to potential electric leakage, and the risk of metal components protruding and interfering with internal circuits.
Innovation Solution
An electric blanket plug connector with an integrally injection molded structure made of insulating material, featuring a clamping connection between the end cover component and the box body component, and a clamping mounting of the external assembly plate to the box body component, eliminating the need for metal connectors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If metal screws or bolts are used to connect the plug connector to the blanket body, then the connection strength is improved, but the risk of electric leakage increases due to potential damage to the blanket body and protrusion of metal components
Solution Approach 1:
The patent replaces the traditional mechanical fastening system (metal screws or bolts) with a clamping connection system made of insulating material. The plug connector body includes a clamping structure that secures the heating wire and blanket body through friction and geometric interlocking, eliminating the need for metal fasteners that could cause electric leakage or protrude and interfere with internal circuits.
Solution Approach 2:
The patent employs composite material construction where the plug connector body is made of insulating material (such as thermoplastic or thermosetting resin) that combines electrical insulation properties with sufficient mechanical strength. This composite approach allows the connector to maintain strong connections without using conductive metal fasteners, thereby preventing electric leakage while ensuring connection reliability.
2Stability of the object's composition
If metal screws or bolts are used to connect the box body, then the structural integrity is improved, but the risk of electric leakage increases due to extrusion deformation and interference with internal circuits
Solution Approach 1:
The patent replaces metal fastening systems in the box body construction with an integrated insulating material structure. The box body is formed as a single piece or pre-assembled unit using insulating materials that provide both structural integrity and electrical isolation, eliminating the need for metal screws or bolts that could deform under extrusion and create electrical hazards.
Solution Approach 2:
The box body is constructed using insulating materials (thermoplastic or thermosetting resin) that provide sufficient mechanical strength and structural stability without requiring metal fasteners. The material composition ensures both structural integrity for housing internal components and electrical insulation to prevent electric leakage, particularly in the vicinity of heating elements and wiring.
3Reliability
If integrally injection molded structure with clamping connection is used, then the electrical safety is improved by eliminating metal connectors, but the assembly complexity increases
Solution Approach 1:
The patent merges multiple functions into the plug connector body: the insulating housing, the clamping structure for securing the heating wire, the mounting features for the power switch, and the interface for the blanket body are all integrated into a single injection-molded component. This consolidation reduces the number of separate parts and assembly steps, making the overall assembly process simpler despite the enhanced safety features.
Solution Approach 2:
The clamping connection structure is designed to be self-securing, where the insulating material's elastic deformation and geometric features automatically lock the heating wire and blanket body in place without requiring additional fasteners or complex assembly operations. The structure performs its own fastening function through its inherent design, reducing assembly complexity while maintaining electrical safety.
Data Source
AI summary
The present application relates to an electric blanket plug connector, including: an end cover component, a box body component, a circuit board component, and an external assembly plate; both the end cover component and the box body component are of an integrally injection molded structure, and the end cover component is mounted on the box body component in a clamping manner to form a connecting box body with an opening at one side in a buckling manner; the circuit board component is mounted in the connecting box body, the circuit board component is provided with a connecting socket, and the connecting socket is mounted at an opening of the connecting box body; the external assembly plate is integrally injection molded, the fixed columns penetrate through a blanket body of an electric blanket and then penetrate into the bottom of the box body component.