Electronic Brake Pedal Linkage for Precise Compact Force Sensing
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Solution Overview
Problem
Existing electronic brake pedals are bulky and lack precision in detecting the driver's braking pressure, leading to inefficient brake control.
Innovation Solution
An electronic brake pedal design with a connecting rod that transforms the driver's pushing movement into a perpendicular translational movement of a slider, utilizing a combination of springs for precise detection and a position sensor to generate accurate brake control signals, allowing for a compact and precise braking mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a traditional mechanical pedal structure is used for electronic brake, then the structure is simple and easy to manufacture, but the bulk is large and detection precision is insufficient
Solution Approach 1:
The connecting rod transforms the pushing movement in the thickness direction into a translational movement in a perpendicular direction (guide path direction). This dimensional transformation allows the position sensor to detect slider position with high precision while keeping the brake pedal thin and compact.
Solution Approach 2:
The slider acts as an intermediary element that converts the driver's pushing force on the brake pad into controlled translational movement along the guide path. This intermediary mechanism enables precise detection of braking pressure while maintaining a compact structure.
2Measurement precision
If the pedal thickness is increased to improve detection resolution, then the detection precision improves, but the overall size of the brake pedal increases
Solution Approach 1:
Instead of increasing pedal thickness to improve detection, the invention transforms the movement to a perpendicular direction using the connecting rod and guide path. This allows high-resolution detection without increasing the pedal's thickness.
Solution Approach 2:
The invention replaces direct mechanical measurement (which would require thick pedal structure) with a transformed mechanical system using the connecting rod and slider mechanism, enabling precise detection through positional measurement rather than direct force measurement.
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 design achieves a compact brake pedal with enhanced detection resolution and precise brake control, ensuring faithful response to the driver's braking requests.
Implementation Method 1
a slider associated with a guide path, of inclined direction relative to the direction of the thrust, and subjected to the action of a return spring
Implementation Method 2
a position sensor detecting the displacement position of the slider corresponding to the thrust
Implementation Method 3
a connecting rod inclined relative to the direction of the guide path and to the direction of the thrust and having a first end connected, articulated, to the pad, a second end connected, articulated, to the slider
Data Source
Figure 1
Figure 2
Figure 3~4a
AI summary
Electronic brake (100) with a brake pad (110) receiving the thrust (P) of the driver requesting a braking action, comprising a base (1), a slider (3) associated with a guide path (31), and subjected to the action of a return spring (5). A link (4) inclined relative to the direction (xx) of the guide path (31) and to the direction (yy) of the thrust (Pi), a first end (41) connected to the pad (110), and a second end (42) connected to the slider (3). A sensor (61) detecting the displacement position (Pd) of the slider (3) corresponding to the thrust (P), to form the brake control signal (SC).