Vehicle Switch With Magnetic Detection For Brake Light Reliability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional vehicle switches for controlling brake lights are prone to failure due to exposure to dust, gas, and dampness, leading to contact issues and requiring complex sealing structures to prevent these problems.
Innovation Solution
A vehicle switch design utilizing a magnet and magnetic detector to control the switching mechanism, eliminating the need for fixed and movable contacts, thus reducing the impact of environmental factors and simplifying the structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional fixed and movable contacts are used in the vehicle switch, then the switching function can be achieved, but the switch becomes susceptible to failure due to dust, gas, and dampness accumulation
Solution Approach 1:
The patent replaces the mechanical contact-based switching system with a magnetic field-based detection system. The magnet attached to the operating unit generates a magnetic field that is detected by the magnetic detector, eliminating the need for physical contacts that are susceptible to contamination by dust, gas, and dampness.
Solution Approach 2:
The patent introduces a magnetic field as an intermediary between the operating unit and the switching device. The magnet on the operating unit creates a magnetic field that acts as a mediator to trigger the magnetic detector, which then controls the switching device, avoiding direct mechanical contact between moving and fixed contacts.
2Reliability
If air-tight sealing structures are added to prevent contact failure, then reliability improves, but the device complexity and assembly time increase
Solution Approach 1:
By replacing the mechanical contact system with a magnetic field-based system, the patent eliminates the need for complex air-tight sealing structures that would be required to protect conventional contacts from environmental contamination.
Solution Approach 2:
The patent extracts and removes the vulnerable contact elements from the system, replacing them with a magnetic field-based detection mechanism that is inherently resistant to environmental factors, thereby eliminating the need for protective sealing structures.
3Ease of operation
If conventional contacts are used, then the switching function is achieved, but maintenance and repair become difficult due to contact contamination
Solution Approach 1:
The patent replaces the mechanical contact system with a magnetic field-based system, where the magnet and magnetic detector have no physical contacts that can become contaminated, thereby making the system maintenance-free and easy to repair.
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 ensures reliable electrical switching for brake lights by using magnetic detection to control the switch-on and switch-off functions, reducing the risk of contact failures and simplifying the assembly process.
Implementation Method 1
a magnetic detector sensible magnetism of the magnet, so that a switching device can be opened or closed in response to strength of the detected magnetism
Data Source
AI summary
A vehicle switch includes a magnet mounted to an operating unit accommodated in an external packaging such that the operating unit can move linearly. A magnetic detector is placed so as to receive different strength of the magnetism from the magnet in the two cases that the operating unit is at the upper limit position and at the lower limit position. A control circuit coupled to the magnetic detector opens and closes a switching device in response to strength of the detected magnetism.