Vehicle Disc Brake Synchronization Prevents Misalignment
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Solution Overview
Problem
Existing disc brakes for vehicles experience uneven wear and potential deformation of the disc due to misalignment of inner and outer friction members during braking, leading to uneven moment application.
Innovation Solution
A disc brake design that includes inner and outer friction pads with a synchronized wedge unit and adjustable sync member to ensure both pads are aligned and pressed against the disc simultaneously, preventing moment application and promoting even wear.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the inner and outer friction members are allowed to move independently, then the braking operation can be simplified, but the friction members and disc become misaligned causing uneven wear and disc deformation
Solution Approach 1:
The sync member merges the movement control of the inner and outer friction members by coupling them together. The sync member includes coupling parts that engage with both friction members, ensuring they move simultaneously and remain aligned during braking operation, thus resolving the alignment precision issue while maintaining operational simplicity
Solution Approach 2:
The sync member acts as an intermediary between the inner and outer friction members. It transfers and synchronizes the movement between the two friction members, ensuring they are pressed against the disc at the same position without requiring complex independent control mechanisms
2Device complexity
If the friction members are pressed against the disc at different positions, then the structure can be simpler, but the disc is subjected to moment causing deformation
Solution Approach 1:
The sync member combines the positioning control of both friction members into a single synchronized system. By coupling the inner and outer friction members through the sync member, the system ensures they apply force at the same position on the disc, preventing moment application and maintaining disc stability without significantly increasing structural complexity
Solution Approach 2:
The sync member creates an equipotential condition for the friction members by ensuring they are at the same positional level relative to the disc during braking. This synchronization eliminates the potential difference in positioning that would otherwise cause moment application and disc deformation
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 synchronized alignment of friction pads reduces disc deformation and ensures even wear, enhancing braking performance and extending the lifespan of brake components.
Implementation Method 1
a disc brake for a vehicle, which presses a friction pad against a disc through a wedge action
Implementation Method 2
a device for obtaining braking force by pressing a friction pad against an outer surface of a disc rotating together with a wheel
Data Source
AI summary
Disclosed is a disc brake for a vehicle, such as an electronic wedge brake, capable of preventing a disc from being subject to the moment due to misalignment of inner and outer friction members with respect to a disc. The disc brake includes a disc rotating together with a vehicle wheel, inner and outer friction pads disposed at both sides of the disc, respectively, a wedge unit installed at rear sides of the inner and outer friction pads to press the inner and outer friction pads against the disc, a driving device that operates the wedge unit for a braking operation, and a sync member for synchronizing braking positions of the inner and outer friction pads with respect to the disc. Since the disc is prevented from being subject to the moment, uneven wear does not occur in the friction member and/or the disc and deformation of the disc is prevented.