Vehicle Pedal Hall Sensor Layout for Compact Pivot-Axis Mounting
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Solution Overview
Problem
Existing vehicle operating pedal apparatuses require a compact design for mounting an angle sensor to detect the angle of rotation of the operating pedal, as conventional solutions are not optimized for space efficiency.
Innovation Solution
A vehicle operating pedal apparatus featuring a pair of support members with a pivot axis, an operating pedal with a tubular boss, and an angle sensor comprising a Hall device and magnet positioned close to the pivot axis, with a cover to obscure the gap between them, allowing for compact mounting and improved detection accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the angle sensor is mounted using conventional methods, then the detection function is achieved, but the mounting space becomes large and not compact
Solution Approach 1:
The Hall device is mounted on the inner side between the pair of support members, utilizing the existing space between the support members and the pedal assembly. This nesting approach allows the angle sensor components to be integrated into the existing structure without requiring additional external mounting space, thereby achieving compact mounting while maintaining detection functionality
2Volume of moving object
If the Hall device and magnet are positioned closer to reduce space, then mounting space is reduced, but detection accuracy may be affected by magnetic field interference
Solution Approach 1:
A non-magnetic cover is introduced as an intermediary component between the Hall device and the magnet. This cover serves multiple functions: it maintains the compact positioning of the sensor components, provides mechanical protection, and acts as a shield to prevent magnetic field interference from affecting the Hall device, thereby preserving detection accuracy despite the reduced spacing
Solution Approach 2:
The cover is designed as a thin-walled structure that provides sufficient magnetic shielding while occupying minimal space. This thin film approach allows the cover to protect the Hall device and magnet assembly without significantly increasing the overall mounting volume, thus maintaining compactness while ensuring detection precision
3Ease of manufacture
If the sensor components are exposed without a cover, then assembly is simpler, but foreign matter can enter the gap between Hall device and magnet
Solution Approach 1:
A thin-walled cover is used to enclose the gap between the Hall device and magnet. This cover acts as a protective barrier that prevents foreign matter such as dust, debris, and moisture from entering the sensor assembly, while its thin design minimizes the increase in overall dimensions and maintains ease of assembly
Solution Approach 2:
The cover is designed as a separate modular component that can be independently manufactured and assembled onto the sensor assembly. This segmentation allows for simplified manufacturing and assembly processes, as the cover can be produced separately and attached without requiring complex integration with other components
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
The solution enables a compact space for mounting the angle sensor while maintaining detection accuracy, preventing foreign matter entry and optimizing space utilization in the vehicle operating pedal apparatus.
Implementation Method 1
a Hall device provided on an inner side between the pair of support members; and a magnet provided at the one end of the operating pedal, facing the Hall device
Data Source
AI summary
To provide a vehicle operating pedal apparatus with a compact space for mounting an angle sensor that detects the angle of rotation of an operating pedal. A vehicle operating pedal apparatus (10) includes: a left support member (20) and a right support member (22) that face each other; an operating pedal (12) that is provided at the upper end with a boss (18), and supported between the left support member (20) and the right support member (22) in such a manner as to be pivotable via a pivot bolt (26) and a collar (29) that are inserted into the boss (18); and an angle sensor (50) configured to detect the angle of rotation of the operating pedal (12). The angle sensor (50) includes: an IC (56) provided on an inner side between the left support member (20) and the right support member (22); and a magnet (58) provided at the upper end of the operating pedal (12), facing the IC (56), to be detected by the IC (56).