Brake Light Sensor Module Integration in Master Cylinder
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Solution Overview
Problem
Existing brake light sensor mounting structures to master cylinders are complex, leading to noise issues and operational instability.
Innovation Solution
A brake light sensor module with a retainer and operation rod connected to a power piston, an elastic member for support, and a signal transmitting element, allowing for a simple and stable installation within the master cylinder.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a sensor is mounted to a master cylinder to detect brake operation, then the brake light can be controlled, but the mounting structure becomes complicated
Solution Approach 1:
The patent combines the sensor mounting structure with the master cylinder body, integrating the sensor housing directly into the master cylinder assembly. This merging eliminates separate mounting brackets and fastening mechanisms, thereby reducing structural complexity while maintaining reliable sensor positioning for accurate brake light control
Solution Approach 2:
The master cylinder housing serves multiple functions: it contains the hydraulic components, provides structural support, and simultaneously acts as the mounting structure for the sensor. This multi-functionality reduces the need for additional dedicated mounting components, simplifying the overall structure while ensuring reliable sensor installation
2Measurement precision
If a sensor is disposed in a cabin to detect brake pedal depression, then brake operation can be detected, but noise problems occur
Solution Approach 1:
The patent extracts the sensor from the cabin environment and relocates it directly to the master cylinder, which is positioned away from the noisy cabin interior. This extraction removes the sensor from the harmful noise environment while maintaining its ability to accurately detect brake operation through the master cylinder's movement
Solution Approach 2:
The master cylinder serves as an intermediary between the brake pedal operation and the sensor. Instead of directly sensing brake pedal depression in the noisy cabin, the sensor detects the master cylinder's movement, which occurs in a quieter mechanical environment, thereby reducing noise interference while maintaining detection accuracy
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
Facilitates a straightforward and stable operation of the brake light sensor module, reducing noise and complexity in mounting, thereby ensuring reliable brake light operation.
Implementation Method 1
one end of the signal transmitting element being elastically supported by the elastic member
Data Source
Figure 1~2
Figure 3
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AI summary
A brake light sensor module includes: a retainer which is provided to move together with an operation element of a master cylinder in response to a depression of a brake pedal; an operation rod which is connected to the retainer so as to move together with the retainer; an elastic member which is installed in the master cylinder; a signal transmitting element which is installed in the master cylinder, one end of the signal transmitting element being elastically supported by the elastic member, and the other end of the signal transmitting element being supported by the operation rod; and a sensor which is installed in the master cylinder so as to be operated by the signal transmitting element.