Pedal Simulator with Rotatable Stopper for Adjustable Tactile Feedback
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Solution Overview
Problem
Conventional pedal simulators are unable to adjust pedal feel to meet individual driver preferences, as the distance between the first damper and stopper is fixed, limiting the ability to vary tactile feedback.
Innovation Solution
A pedal simulator design featuring a rotatable first stopper and a second stopper with varying floor surfaces, allowing the air gap between the first damper and stopper to change, thereby adjusting the pedal tactile feedback based on rotation, enabling customization of pedal feel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the distance between the first damper and stopper is kept constant, then the pedal simulator structure is simple, but the pedal feel cannot be adjusted to meet driver preferences
Solution Approach 1:
The stopper is divided into a first stopper and a second stopper that can rotate relative to each other. The first stopper contacts the first damper while the second stopper provides the adjustment interface. This segmentation allows the air gap to be adjusted without complicating the overall structure, as each component has a specific function.
Solution Approach 2:
The second stopper is designed to be rotatable relative to the first stopper, transforming a static structure into a dynamic one. This rotation capability allows the air gap between the first damper and first stopper to be adjusted, enabling pedal feel customization while maintaining structural simplicity.
2Ease of operation
If the air gap between the first damper and stopper is made adjustable, then the pedal tactile feedback can be customized, but the structure becomes more complex
Solution Approach 1:
The adjustable air gap is achieved through a simple rotation mechanism where the second stopper rotates relative to the first stopper. This dynamic adjustment is straightforward for the user (simply rotate the second stopper) while the mechanical implementation remains simple, avoiding complex adjustment mechanisms.
Solution Approach 2:
The invention changes the physical parameter of the air gap distance by rotating the second stopper to different angular positions. Each rotation position corresponds to a different air gap size, allowing continuous adjustment of pedal tactile feedback without requiring complex mechanical changes.
3Adaptability or versatility
If a rotatable stopper mechanism is added, then pedal feel adjustment is enabled, but the manufacturing complexity increases
Solution Approach 1:
Dividing the stopper into two separate rotatable components (first and second stoppers) actually simplifies manufacturing compared to creating a single complex adjustable stopper. Each stopper can be manufactured independently with simpler geometries, and their assembly through rotation is more straightforward than integrating adjustment mechanisms into a single piece.
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
Enables drivers to adjust the pedal feel from light to heavy by rotating the stopper, providing a customizable tactile experience that suits individual preferences.
Implementation Method 1
a first damper disposed inside the pedal simulator piston to be spaced apart from the first stopper by an air gap, and configured to contract or expand based on the movement in the linear direction
Implementation Method 2
When the vehicle driver depresses the pedal to advance the backup piston 501 (to the right of FIG. 5), the backup spring 502 is compressed
Implementation Method 3
when the pedal simulator piston 510 advances, the spring 512 is depressed and compressed
Data Source
AI summary
A pedal simulator includes a pedal simulator piston configured to move in a linear direction based on a pedal stroke of a driver, a first stopper that is rotatable in a clockwise or counterclockwise direction and configured to adjust a pedal tactile feedback provided to the driver based on the rotation of the first stopper, a first damper disposed inside the pedal simulator piston to be spaced apart from the first stopper by an air gap, and configured to contract or expand based on the movement in the linear direction, and a second stopper configured to be operatively coupled with the first stopper for causing the air gap to change based on the rotation of the first stopper, wherein the pedal tactile feedback changes based on a change in the air gap.