Wheel Speed Sensor Bracket with Integrated Tubular Protective Wall
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Solution Overview
Problem
Existing wheel speed sensor protection structures for two-wheeled motor vehicles require additional components, leading to increased cost and weight, and are inefficient in removing foreign matter and measuring gap lengths.
Innovation Solution
A tubular protective wall on the bracket surrounding the wheel speed sensor detection portion, with an open recess on the pulse ring side that opens sideways and radially outward, allowing foreign matter removal and gap measurement, and positioned to prevent stone entry and facilitate visual inspection, without adding special components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a protector plate is mounted on the transmission case to protect the wheel speed sensor, then the sensor is protected from foreign matter, but the cost and weight increase due to adding a special component
Solution Approach 1:
The protective wall is integrated into the bracket that already exists for mounting the wheel speed sensor. The bracket serves dual functions: mounting the sensor and providing protection through the integrated protective wall, eliminating the need for a separate protector plate and reducing overall weight and cost.
Solution Approach 2:
The bracket is designed with multi-functionality, serving both as a mounting structure for the wheel speed sensor and as a protective structure through the integrated protective wall. This universal design eliminates the need for dedicated protection components.
2Reliability
If a protector plate is mounted on the transmission case to protect the wheel speed sensor, then the sensor is protected from foreign matter, but the cost increases due to adding a special component
Solution Approach 1:
The protective wall is merged with the bracket structure, combining protection and mounting functions into a single component. This reduces the total number of parts and simplifies the overall device structure.
Solution Approach 2:
The bracket is designed to perform multiple functions: mounting the sensor and providing protection. This multi-functional design reduces component quantity and device complexity.
3Reliability
If the protective wall end part is positioned closer to the pulse ring than the detection portion, then the detection portion is protected without adding special components, but the gap between the protective wall and pulse ring must be precisely controlled
Solution Approach 1:
The protective wall is designed with different functional zones: the end part closer to the pulse ring provides protection while maintaining an appropriate gap, and the body portion provides structural support. This local differentiation allows optimization of each zone for its specific function.
Solution Approach 2:
The bracket with the integrated protective wall is pre-positioned and fixed to the suspension fork at predetermined locations, establishing the correct gap distance between the protective wall end part and the pulse ring before operation. This preliminary positioning ensures proper spacing without requiring complex adjustment mechanisms.
4Ease of operation
If an open recess is formed in the protective wall opening sideways, then foreign matter can be removed and gap length measured, but the protective wall structure becomes more complex
Solution Approach 1:
The protective wall is segmented by forming an open recess that divides the internal space, allowing foreign matter to be removed through the opening while maintaining the overall protective function. This segmentation creates access without requiring complete removal or complex mechanisms.
Solution Approach 2:
The open recess allows the system to be self-serviceable, enabling users to manually remove foreign matter and measure gap lengths without requiring specialized tools or disassembly of the protective wall. The structure serves its own maintenance needs.
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
Protects the wheel speed sensor without increasing cost or weight, effectively removes foreign matter, measures gap lengths, and prevents stone impact through centrifugal force and strategic positioning, while allowing visual verification of sensor alignment.
Implementation Method 1
it is possible to remove outward, via the open recess, foreign matter that has entered between the detection portion and the pulse ring
Data Source
AI summary
In a vehicle including a pulse ring that rotates together with a wheel, a wheel speed sensor that has a detection portion close to the pulse ring, and a bracket that fixes the wheel speed sensor, a tubular protective wall surrounding the detection portion is provided on the bracket so that an end part, on the pulse ring side, of the protective wall is closer to the pulse ring than the detection portion of the wheel speed sensor is. This enables the wheel speed sensor to be protected without adding a special component.