Disk Brake Wedge Reference Position Recognition
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Solution Overview
Problem
Conventional disk brakes for vehicles face issues in accurately sensing reference positions, leading to incorrect braking control and noise generation due to sudden stops or electric discharges, which affect the positioning of the wedge member and the braking force.
Innovation Solution
A method for recognizing the reference position of a wedge member in a disk brake by moving it to the left and right ends of the operating section, determining the middle position as the central point, and using this as a reference for controlling the braking, ensuring accurate positioning and reducing unnecessary motor operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the wedge member is moved to recognize reference positions (left end, right end, middle position), then the braking control precision is improved, but the operation time and complexity increase
Solution Approach 1:
The system performs preliminary movement of the wedge member to recognize reference positions (left end, right end, and middle position) before actual braking operations begin. This preliminary action establishes accurate reference points that enable precise braking control during subsequent operations, resolving the contradiction by preparing the system in advance with accurate positional information.
2Measurement precision
If the driving motor operates continuously to maintain wedge member position, then the positioning accuracy is improved, but the noise generation and energy consumption increase
Solution Approach 1:
The system uses the wedge member's own movement characteristics and the recognized reference positions to self-regulate its positioning. By establishing reference points through preliminary movement and using these references for subsequent control, the system achieves accurate positioning without requiring continuous motor operation, thereby reducing noise and energy consumption while maintaining positioning accuracy.
3Device complexity
If the wedge member position is not accurately recognized, then the device complexity is reduced, but the braking control reliability deteriorates
Solution Approach 1:
The system replaces complex electronic position sensing mechanisms with a mechanical approach where the wedge member physically moves to recognized reference positions (left end, right end, middle position). This mechanical substitution achieves accurate position recognition through controlled movement and reference point establishment, maintaining braking control reliability while avoiding the need for complex sensing systems.
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
This method enables precise control of the disk brake, reducing noise by only driving the motor when necessary and maintaining accurate braking force, thus enhancing safety and efficiency.
Implementation Method 1
a wedge member having one surface, to which the friction pad is attached, moving in the rotating direction of the disk by a driving motor generating driving force
Implementation Method 2
a movable friction pad rubbing against one surface of the disk and generating braking force
Implementation Method 3
a male screw is formed on a rotary shaft of the driving motor and a shaft installation hole having a female screw formed on the inner circumferential surface thereof is formed through the driving force transfer member
Data Source
AI summary
A method for recognizing a reference position of a wedge member of a disk brake for vehicles, which has a disk rotating together with the rotation of a wheel of a vehicle, a movable friction pad rubbing against one surface of the disk and generating braking force, the wedge member having one surface, to which the movable friction pad is attached, and moving in a rotating direction of the disk and moving forward to the disk by a driving motor for generating driving force, a guide member guiding the wedge member to the disk when the wedge member moves in the rotating direction of the disk, and a driving force transfer member screw-connected to a rotary shaft of the driving motor, moving in the rotating direction of the disk by the driving motor, and causing the wedge member to move in the rotating direction of the disk, the method including moving the wedge member to a left end of an operating section and recognizing a position of the left end, when a driver applies a pressure to a pedal; moving the wedge member to a right end of the operating section and recognizing a position of the right end, when the position of the left end is recognized; determining a middle position between the left end and the right end to be a central point of the entire moving distance; and recognizing the middle position as a reference position for controlling braking of the wedge member.