Wheel Speed Sensor Terminal Stabilization
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Solution Overview
Problem
Existing wheel speed sensors face issues with structural construction, manufacturing processes, cost control, signal redundancy, and reliability due to elongated electrical terminals prone to deflection or displacement, affecting signal transmission accuracy.
Innovation Solution
A wheel speed sensor design featuring a sensor housing with a sensor body assembly that includes pairs of electrical terminals with supporting members and holders to prevent displacement, ensuring accurate signal transmission by maintaining the elongated body portions stationary during soldering and operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If elongated electrical terminals are used to connect sensor chips, then the electrical connection is achieved, but the terminals are prone to deflection or relative displacement which deteriorates signal transmission accuracy
Solution Approach 1:
The patent divides the electrical terminal into multiple segments: the original elongated terminal body and additional supporting members (first supporting member, second supporting member, third supporting member). These segments are distributed at different locations along the terminal to provide localized support, preventing deflection and displacement while maintaining electrical connectivity.
Solution Approach 2:
The patent introduces supporting members as intermediary elements between the electrical terminal and the surrounding structure. These supporting members act as mediators that prevent the electrical terminal from deflecting or displacing, thereby ensuring signal transmission accuracy without interfering with the electrical connection function.
2Length of moving object
If electrical terminals are made longer to reach connection points, then connectivity is ensured, but the terminals become more prone to deflection and displacement
Solution Approach 1:
The patent segments the electrical terminal structure by adding multiple supporting members at different positions along its length. This segmentation provides distributed support points that stabilize the terminal without requiring it to be shorter, thus maintaining connectivity while improving positional stability.
Solution Approach 2:
The supporting members are pre-positioned along the electrical terminal before final assembly. This preliminary action of providing support at critical locations prevents deflection and displacement from occurring, allowing the terminal to maintain its length for connectivity while being stabilized along its entire length.
Data Source
AI summary
A wheel speed sensor, includes: one or more sensor chips, each of which has a pair of pins; electrical terminals arranged in pairs, each pair electrically connected to a pair of pins of a sensor chip; a supporting member attached to a first end of each electrical terminal; an end holder attached adjacent to the supporting member to each electrical terminal to prevent displacement of each electrical terminal relative to each other; and at least one intermediate holder attached to a body portion of each electrical terminal to prevent displacement of the body portion of each electrical terminal relative to each other.