Wheel Sensor Mounting via Spindle Nesting
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Solution Overview
Problem
Tachometer systems mounted externally on wheels are prone to damage from environmental factors like dirt, water, and physical collisions, and lack protection and durability, requiring frequent maintenance and replacement.
Innovation Solution
A sensor mounting arrangement for a wheel assembly that includes a spindle with an elongated cavity, a tube, a wire harness, and a sensor assembly, where the tube is partially received in the cavity, and the wire harness is routed through it, with the sensor assembly connected to the leading end, providing protection and durability while allowing pressure equalization and lubricant management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the tachometer system is mounted externally on the wheel, then the installation is simple and accessible, but the sensor lacks protection from environmental damage and physical collisions
Solution Approach 1:
The sensor assembly is nested within the wheel assembly's spindle cavity. The tube is partially received in the elongated cavity of the spindle, and the sensor assembly is positioned within the tube, creating a nested structure that protects the sensor while maintaining accessibility for installation and maintenance.
2Ease of repair
If the tachometer system is mounted externally on the wheel, then the sensor is accessible for maintenance, but it is exposed to dirt, water, and chemicals that interfere with its operation
Solution Approach 1:
The sensor assembly is nested within the wheel assembly's spindle cavity through the tube structure. This nesting provides protection from environmental factors such as dirt, water, and chemicals while maintaining accessibility for installation and maintenance operations.
Solution Approach 2:
The tube acts as an intermediary structure between the external environment and the sensor assembly. It provides a protective barrier that shields the sensor from harmful environmental factors while allowing the sensor to remain accessible for maintenance through the tube's opening.
3Measurement precision
If the sensor is mounted on the axle, then the measurement is accurate, but the compact monolithic axle structure provides little space for accommodating the sensor internally
Solution Approach 1:
The sensor assembly is nested within the elongated cavity of the spindle, utilizing the available internal space efficiently. The tube is partially received in the cavity, and the sensor is positioned within the tube, creating a compact nested arrangement that accommodates the sensor without requiring additional external space.
Data Source
AI summary
A sensor mounting arrangement of a wheel assembly having a spindle defining an elongated cavity is provided. The spindle rotatably supports a wheel. The sensor mounting arrangement comprises a tube, a wire harness, and a sensor assembly. The tube is configured to be partially received in the elongated cavity of the spindle. The wire harness is routed through the tube. The sensor assembly is connected to a leading end of the wire harness wherein the leading end is configured to be disposed proximal to the wheel.