Brake Pad Locking Mechanism Using Elastic Friction Amplification
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Solution Overview
Problem
Conventional brake locking apparatuses struggle to generate a large locking force efficiently, especially for large vehicles, and they often exceed their permitted load limits.
Innovation Solution
A brake locking apparatus with a housing, first and second rotating members, an elastic member, and a power transmission mechanism, including a worm wheel and worm gear, that generates a locking force by increasing frictional forces between the elastic member and the housing, allowing efficient torque generation with minimal load application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If the weight of the vehicle body increases or the slope becomes steeper, then the required locking force increases, but the load applied to the brake locking apparatus exceeds the permitted range
Solution Approach 1:
The brake pad is designed to rotate dynamically during engagement, transitioning from a retracted position to a pressed position against the brake disc. This rotational movement allows the elastic member to progressively engage and generate increased locking force without requiring excessive initial load on the apparatus
Solution Approach 2:
The elastic member changes its deformation state from a relaxed condition to a compressed condition as the brake pad rotates into engagement. This parameter change in the elastic member's physical state enables the generation of high locking forces while the apparatus itself experiences controlled, progressive loading
2Force
If a large locking force is generated for large vehicles, then the brake can maintain active state on steep slopes, but the conventional apparatus cannot generate sufficient force
Solution Approach 1:
The brake pad incorporates a curved, arc-shaped engagement surface that rotates during operation. This curved geometry allows for progressive engagement where the contact point moves along the arc, enabling the elastic member to gradually increase the locking force to levels sufficient for large vehicles while maintaining reliable brake activation
Solution Approach 2:
The elastic member is pre-positioned and pre-loaded in a relaxed state before brake engagement. As the brake pad rotates into position, the elastic member is progressively compressed, storing and releasing energy to generate the large locking forces required for reliable brake maintenance on steep slopes
3Force
If the brake pad is pressed firmly against the brake disc, then the brake remains active, but the load on the locking apparatus increases
Solution Approach 1:
The brake pad transitions from a stationary retracted position to a dynamic rotating engagement position. During this rotation, the elastic member progressively compresses, allowing the pressing force to increase dynamically while the load on the locking apparatus is distributed over the engagement sequence rather than applied instantaneously
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 apparatus efficiently generates a locking force to maintain the brake's operating state while minimizing the load applied, effectively handling increased weight and slope conditions.
Implementation Method 1
an elastic member including: a spring part positioned on a circumferential side of the first body part and having an outer circumferential surface adjacent an inner surface of the housing, and a first bent part bent inwardly at a first end of the spring part to elastically support the first support surface
Implementation Method 2
a brake pad limiting the rotation of the wheel by pressing a side surface of the brake disc so that frictional force can be generated
Data Source
AI summary
A brake locking apparatus for locking the position of a brake pad in a vehicle, the brake locking apparatus may include: a housing; a first rotating member including: a first body part inside the housing configured to rotate in conjunction with movement of the brake pad, and a first protrusion including a first support surface extending radially outwardly from a first side of the first body part, wherein the first body part is cylindrical; and an elastic member including: a spring part positioned on a circumferential side of the first body part and having an outer circumferential surface adjacent an inner surface of the housing, and a first bent part bent inwardly at a first end of the spring part to elastically support the first support surface.