Noise Filter Wire Harness Direct Connection
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Solution Overview
Problem
Conventional noise filters require adjustments to filter circuit characteristics due to the presence of intermediate electric wires, which complicates noise reduction performance and increases complexity.
Innovation Solution
A noise filter design that directly connects the filter circuit to the intermediate connection portions of two electric wires within a wire harness, eliminating the need for intermediate wires and using a conductive connection structure with elastic elements for secure and versatile connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If intermediate electric wires are used to connect the filter circuit to the noise reduction target wire, then the filter circuit can be electrically connected to the target wire, but the filter circuit characteristics must be adjusted to account for noise components on the intermediate wires, increasing device complexity
Solution Approach 1:
The patent extracts and eliminates the intermediate electric wire from the connection path between the filter circuit and the noise reduction target wire. By directly connecting the filter circuit to the target wire, the source of noise interference is removed, eliminating the need for complex filter circuit adjustments while maintaining noise reduction performance
Solution Approach 2:
The patent introduces a clamp as an intermediary mechanical connection structure that enables direct electrical connection between the filter circuit and the target wire without requiring intermediate electric wires. The clamp serves as a mediator that provides both mechanical support and electrical conductivity, simplifying the overall system
2Reliability
If intermediate electric wires are used for connection, then electrical connection can be achieved, but the filter size and weight increase due to additional components
Solution Approach 1:
The patent merges the mechanical connection function and electrical connection function into a single integrated clamp structure. This eliminates the need for separate intermediate electric wires and connection components, thereby reducing the filter's overall weight while maintaining reliable electrical connection
Solution Approach 2:
The clamp is designed as a multi-functional component that simultaneously provides mechanical support, electrical connection, and noise reduction functions. This universal component replaces multiple separate components (intermediate wires, connectors, etc.), reducing overall system weight
3Ease of manufacture
If intermediate electric wires are used, then the filter can be assembled with standard components, but assembly efficiency decreases due to additional connection steps
Solution Approach 1:
The patent segments the noise filter into modular components (filter circuit, clamp, housing) that can be independently manufactured and then quickly assembled. The clamp serves as a pre-fabricated module that integrates multiple functions, reducing the number of assembly steps required compared to traditional intermediate wire connections
Data Source
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AI summary
A noise filter (1) includes a filter circuit (10) including a noise reduction element (11) that reduces a noise component, a conductive first circuit connection member (12) to which a first connection portion of the noise reduction element (11) is electrically connected, and a conductive second circuit connection member (13) to which a second connection portion of the noise reduction element (11) is electrically connected, a first electric connection structure (30) that electrically connects an intermediate connection portion (WEal) of a core wire (WEa) of a first electric wire (WE1) to the first circuit connection member (12), and a second electric connection structure (40) that electrically connects an intermediate connection portion (WEa2) of a core wire (WEa) of a second electric wire (WE2) whose one end is grounded, to the second circuit connection member (13).