Steering Angle Sensor Waterproof Housing Segmentation
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Solution Overview
Problem
Prior art steering angle sensors are not waterproof, which can lead to damage from water ingress and limit their application.
Innovation Solution
A waterproof steering angle sensor design featuring a first and second casing with an isolated space to house the printed circuit board, utilizing an isolating member and sealing mechanisms to prevent water entry, allowing the sensor to operate effectively in wet conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the steering angle sensor uses a conventional open structure, then the device complexity is low, but the sensor is not waterproof and reliability in wet conditions deteriorates
Solution Approach 1:
The sensor housing is divided into a first housing and a second housing that are fixed together to form an isolated space. The printed circuit board is specifically positioned within the first housing, creating separate zones for different components. This segmentation allows the electronic components to be protected from water while maintaining a manageable structural complexity.
Solution Approach 2:
A waterproof coating is applied to the printed circuit board as an intermediary protective layer. This coating acts as a barrier between the electronic components and the external environment, preventing water ingress while allowing the overall sensor structure to remain relatively simple.
2Object-affected harmful factors
If the printed circuit board is exposed in the sensor, then the structure is simple, but water can enter and damage the circuit board
Solution Approach 1:
The housing is segmented into distinct chambers - the first housing contains the printed circuit board in a protected isolated space, while the second housing accommodates other components. This physical separation ensures that water entering the sensor cannot easily reach the circuit board, protecting it without requiring overly complex sealing mechanisms.
Solution Approach 2:
The waterproof coating serves as an intermediary protective barrier directly on the printed circuit board. Additionally, the housing structure itself acts as an intermediary barrier, creating a physical isolation zone that prevents water from contacting the circuit board while maintaining structural simplicity.
Data Source
AI summary
A steering angle sensor for measuring the rotation angle of a motor vehicle steering wheel includes a master gear driven by the main rotating shaft of the motor vehicle steering wheel, first and second gears meshed with the master gear, a printed circuit board, a first casing, and a second casing. The first and second casings are fixedly installed together, and an accommodating space is formed between the two casings to accommodate the master gear, the first and second gears, and the printed circuit board. The master gear is rotatably connected with at least one of the first and second casings, and the first and second gears are rotatably accommodated in the accommodating space. The first casing is provided with an isolated space, and the printed circuit board is fixedly installed in the isolated space to inhibit water from entering the isolated space to damage the printed circuit board.