Master Brake Cylinder Position Detection via Segmented Sensor
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Solution Overview
Problem
Existing master brake cylinder arrangements require direct modification and engagement of components for position detection, leading to complex assembly and potential reliability issues.
Innovation Solution
A master brake cylinder arrangement where the sensor element is independently guided within the housing, interacting with the piston, allowing for compact and reliable position detection without modifying the piston, using a guide body and spring arrangement to facilitate movement and detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If position detection components are directly integrated into the piston structure, then position detection is achieved, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The position detection system is segmented into independent components: a sensor element mounted on the piston and a separate position detecting sensor on the housing. This segmentation allows each component to be manufactured and assembled independently, reducing overall device complexity while maintaining detection functionality.
Solution Approach 2:
A magnetic field serves as an intermediary between the sensor element on the piston and the position detecting sensor on the housing. This intermediary enables non-contact position detection, eliminating the need for direct mechanical integration and reducing assembly complexity.
2Measurement precision
If position detection components are directly integrated into the piston, then position detection is achieved, but ease of manufacture decreases
Solution Approach 1:
By dividing the position detection system into separate components (sensor element on piston, position detecting sensor on housing), each component can be manufactured using standard processes without requiring complex integrated modifications to the piston.
Solution Approach 2:
The position detection functionality is extracted from the piston structure itself and implemented as a separate sensor element that can be independently manufactured and then mounted on the piston, simplifying the manufacturing of both the piston and the detection system.
3Measurement precision
If sensor elements are mounted directly on the piston, then position detection is achieved, but reliability may be compromised due to additional modification points
Solution Approach 1:
Segmenting the detection system into separate components reduces the number of modification points on the piston itself. The sensor element can be mounted using simple attachment methods, and the separation reduces potential failure points in the integrated structure.
Solution Approach 2:
The magnetic field acts as an intermediary that enables detection without direct mechanical coupling between the sensor element and the housing sensor. This non-contact interaction reduces wear and potential failure points, improving reliability.
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
Simplifies manufacturing and assembly, ensures reliable position detection, and allows for a more compact design by decoupling sensor components from the piston, enabling flexible installation and precise position sensing.
Implementation Method 1
the sensor element is movable as a function of a piston movement, and a position detecting sensor, which is arranged fixed on the master brake cylinder housing
Implementation Method 2
A further development of the invention provides for the guide body to have an abutment portion by way of which it may interact with the piston
Data Source
AI summary
A master brake cylinder arrangement includes at least one piston arrangement with a piston movably guided in a receiving bore in a master brake cylinder housing. The piston, together with the receiving bore, delimits a pressure chamber which is in fluid connection with a hydraulic brake circuit and may be moved along a movement axis between an initial position and an actuation position. A position detecting device detects movement of the piston caused by actuation is provided within the receiving bore. The position detecting device has a sensor element, which is movable as a function of a piston movement, and a position detecting sensor, which is arranged fixed on the master brake cylinder housing. The sensor element is received and guided in the master brake cylinder housing independently of the piston and is capable of interacting with the piston for deflection as a function of the piston movement.