Transmission-Housed Speed Sensor Layout Against Dust and Stone Damage
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Solution Overview
Problem
Existing speed sensor arrangements on vehicles are inadequately protected from external sand, stones, dust, and moisture, leading to damage and increased complexity in installation due to insufficient concealment and shielding mechanisms.
Innovation Solution
A speed sensor arrangement where the speed sensor is housed within a sealed sensing space within the vehicle's transmission system, connected to a power unit, providing complete concealment and protection from external debris and environmental factors through a combination of a continuously variable transmission box and gear box configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a covering member is used to shield the speed sensor, then some protection from external dust and moisture is provided, but the protection is insufficient and the speed sensor is still easily damaged by sand, stones, and moisture
Solution Approach 1:
The speed sensor is nested within the transmission system housing, which provides complete enclosure and protection. The sensor is positioned inside the sealed transmission case, eliminating exposure to external harmful factors while maintaining functional access to the wheel axle for speed detection.
Solution Approach 2:
The speed sensor is extracted from the external environment and relocated to the internal sealed space of the transmission system. This extraction removes the sensor from direct exposure to sand, stones, dust, and moisture while maintaining its detection function through the wheel axle connection.
2Object-affected harmful factors
If additional reinforced leakage-preventing mechanisms are added to protect the speed sensor, then protection from external dust and moisture is improved, but the arrangement becomes elaborate and complicated
Solution Approach 1:
The protection function is merged with the transmission system housing structure. The housing that already exists for the transmission system is utilized to provide complete enclosure for the speed sensor, eliminating the need for separate protective mechanisms and reducing overall complexity.
Solution Approach 2:
The transmission system housing serves multiple functions: it houses the transmission components and simultaneously provides complete protection for the speed sensor. This multi-functionality eliminates the need for dedicated protective structures, simplifying the overall arrangement.
3Measurement precision
If the speed sensor is mounted on the wheel axle with only a covering member, then the sensor can detect speed, but the sensor is exposed to external sand, stones, dust, and moisture causing corrosion and damage
Solution Approach 1:
The speed sensor is nested within the sealed transmission system housing, which completely encloses the sensor while allowing it to maintain its speed detection function through connection to the wheel axle. This nesting provides protection without compromising measurement capability.
Solution Approach 2:
The speed sensor is extracted from the external environment and placed within the sealed transmission system. This extraction protects the sensor from harmful external factors while maintaining its functional connection to the wheel axle for accurate speed measurement.
Data Source
AI summary
A structure of a speed sensor arrangement of a vehicle is provided. The vehicle includes a power unit. The power unit is connected with a transmission system. The transmission system is formed with a sensing space. The sensing space is provided therein with a speed sensor. As such, the speed sensor is arranged in a completely concealed space to prevent the speed sensor from being hit by external sand and stones or corroded by external dust or moisture.