Movable Brake Pedal Assembly With Integrated Pedal Simulator
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Solution Overview
Problem
Conventional brake systems with exposed brake pedals during autonomous driving can cause discomfort and safety risks for drivers, and the separate pedal simulator increases system volume and installation complexity.
Innovation Solution
An apparatus that moves the brake pedal forward and backward using a pedal simulator connected via an input rod, a screw with a first screw thread, an anti-rotation portion, and an actuator, allowing the pedal to be automatically controlled and adjusted based on vehicle operating conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the brake pedal remains exposed toward the driver during autonomous driving, then the driver can operate the brake pedal when needed, but the driver feels uncomfortable and there is a risk of injury to the driver's leg
Solution Approach 1:
The brake pedal is designed to be movable rather than fixed, allowing it to change position between exposed and accommodated states based on driving mode. During autonomous driving, the pedal is moved forward to be accommodated, reducing injury risk and improving comfort. When manual operation is needed, the pedal can be exposed again, providing dynamic adaptability to different operational requirements.
2Ease of operation
If a separate pedal simulator is installed to provide pedal feel, then the driver experiences realistic feedback, but the volume of the brake system increases and installation becomes difficult
Solution Approach 1:
The pedal simulator function is merged with the brake pedal assembly itself. The simulator is integrated into the pedal structure, allowing the pedal to provide realistic feedback to the driver while occupying the same space as the brake mechanism. This eliminates the need for a separate, bulky simulator unit and simplifies installation.
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
Improves driver comfort and vehicle operability by accommodating the brake pedal during autonomous driving, minimizing injury risks, and simplifying the pedal simulator's installation and operation.
Implementation Method 1
a screw fixed to the other side of the pedal simulator and having a first screw thread formed on an outer circumferential surface thereof; an anti-rotation portion configured to prevent rotation of at least one of the pedal simulator and the screw; and an actuator configured to provide power; wherein the first screw thread is connected to the actuator to receive a rotational force, and the screw converts the rotational force into a translational motion by the anti-rotation portion
Data Source
AI summary
Disclosed is an apparatus for moving a brake pedal. The apparatus for moving a brake pedal according to the disclosure includes a pedal simulator providing a reaction force according to a pedal effort of the brake pedal and having one side connected to the brake pedal through an input rod, a screw fixed to the other side of the pedal simulator and having a first screw thread formed on an outer circumferential surface thereof, an anti-rotation portion configured to prevent rotation of at least one of the pedal simulator and the screw, and an actuator configured to provide power, wherein the first screw thread is connected to the actuator to receive a rotational force, and the screw converts the rotational force into a translational motion by the anti-rotation portion, thereby generating the translational motion of the pedal simulator and the brake pedal fixed or connected to the screw.