Vehicle Brake Load Balancing for Uniform Piston Release
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Solution Overview
Problem
Existing brake apparatuses for vehicles with a pair of pistons suffer from non-uniform load transmission, leading to deteriorated braking performance and incomplete release of pistons during braking and disengagement, respectively, resulting in residual drag.
Innovation Solution
A brake apparatus with a load transmission part that balances the load between the pair of pistons using a balancing gear system and a load transmission restricting part that selectively restricts the operation of the load transmission part to ensure complete release of pistons during braking force release.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a balancing gear system is used to transmit loads between left and right pistons, then uniform load transmission during braking is improved, but the pistons cannot be completely released during disengagement, resulting in residual drag
Solution Approach 1:
The patent applies dynamics by making the load transmission path configurable - the balancing gear system is engaged during braking to provide uniform load transmission, and disengaged during release to allow complete piston retraction. This dynamic switching between different operational states resolves the contradiction between needing load balancing during braking and needing complete release during disengagement
Solution Approach 2:
The patent introduces an intermediary mechanism (the controllable coupling device or valve system) that mediates between the balancing gear system and the piston release mechanism. This intermediary selectively enables or disables the load transmission path based on operational requirements, allowing uniform braking when engaged and complete release when disengaged
2Force
If the load transmission part operates continuously to balance loads, then uniform pressing force is achieved, but the release time is restricted and pistons are incompletely released
Solution Approach 1:
The patent applies periodic action by alternating between two distinct operational phases: a braking phase where the load transmission part is active to balance loads and provide uniform pressing force, and a release phase where the load transmission part is deactivated to allow rapid, complete piston retraction. This periodic switching eliminates the time restriction problem by ensuring the release path is fully open during disengagement
3Reliability
If a balancing gear system is installed between pressing parts, then load uniformity is improved, but device complexity increases due to additional components
Solution Approach 1:
The patent applies universality by designing the balancing gear system to serve multiple functions: it provides load balancing during braking, acts as a compact structural element that integrates with the existing caliper geometry, and can be engaged or disengaged as needed without requiring separate dedicated mechanisms. This multi-functionality reduces the need for additional separate components, thereby limiting the increase in device complexity
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 solution ensures uniform load transmission during braking, preventing incomplete release and residual drag, thereby enhancing braking performance and reducing mechanical stress on the brake components.
Implementation Method 1
a pair of ring gear parts configured to rotate while engaging with the planet gear parts; and one or more balancing gear parts disposed between the pair of ring gear parts and configured to rotate while engaging with the ring gear parts
Implementation Method 2
The load transmission restricting part may apply a rotational resistance force to the one or more balancing gear parts by pressing the one or more balancing gear parts
Data Source
AI summary
A brake apparatus for a vehicle may include: a drive part configured to generate driving power; a pair of pressing parts configured to receive the driving power from the drive part and to apply or release a braking force; a load transmission part installed between the pair of pressing parts and configured to transmit a pressing load of any one of the pair of pressing parts to the other pressing part of the pair of pressing parts; and a load transmission restricting part configured to selectively restrict an operation of the load transmission part by pressing the load transmission part.