Brake Dust Filter with Thermal Switching to Extend Screen Life
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Solution Overview
Problem
Existing brake dust filtering systems are inefficient and lead to environmental pollution due to the discharge of fine brake dust particles, which affect the appearance of vehicles and pose health risks, while also reducing the service life of filter screens.
Innovation Solution
A brake dust filtering apparatus with a base, scribing sheet, and filter screen, controlled by a thermosensitive spring to selectively filter dust during braking, distinguishing between low-temperature mechanical and high-temperature chemical dust types, and featuring a replaceable filter screen design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a filter box or filter screen is used to absorb dust around the brake caliper in a normally open state, then dust at edges of wheels and brake dust are absorbed, but the service life of the filter screen is seriously affected
Solution Approach 1:
The patent applies a drive member to enable the scribing sheet to slide relative to the base, dynamically switching between an off-state (through holes staggered) and an on-state (through holes overlapping). This dynamic mechanism allows the filter to be opened only when brake dust needs to be collected, preventing continuous operation that would degrade the filter screen and extend its service life while still effectively absorbing dust when activated.
Solution Approach 2:
The patent changes the operational state parameter of the filter from a permanently open state to a controllable state with distinct off and on positions. By using the drive member to shift the scribing sheet between positions, the system controls whether the first and second through holes align, thereby controlling dust flow through the filter screen. This parameter change enables selective filtering that preserves filter life.
2Object-affected harmful factors
If a filter screen operates continuously in an open state to capture brake dust, then filtering coverage is comprehensive, but filtering efficiency is reduced due to unnecessary operation
Solution Approach 1:
The patent implements periodic action by enabling the filter to operate only during specific periods when brake dust generation occurs (when the drive member shifts to the on-state aligning the through holes). During other periods, the filter remains closed (through holes staggered), avoiding unnecessary operation. This periodic activation maintains comprehensive dust coverage when needed while significantly improving overall filtering efficiency by eliminating continuous operation.
3Device complexity
If the scribing sheet is fixed relative to the base, then the structure is simple, but the filtering apparatus cannot selectively filter dust during braking
Solution Approach 1:
The patent introduces a drive member that enables the scribing sheet to slide relative to the base, transforming the structure from a fixed simple design to a dynamic one. This dynamic element allows the system to switch between off-state (through holes staggered) and on-state (through holes overlapping), providing selective filtering capability during braking while maintaining relatively simple structural implementation through the sliding mechanism.
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
Enhances dust filtering efficiency, extends filter screen life, and reduces environmental pollution by selectively filtering high-temperature chemical dust, while maintaining a compact design and low integration cost.
Implementation Method 1
the thermosensitive spring is configured to keep the scribing sheet and the base in the off-state in a normal temperature state, and generate deformation when the temperature exceeds a preset value to drive the scribing sheet to slide relative to the base to form the on-state
Implementation Method 2
a filter screen which is disposed on a side of the base close to the brake caliper and covers the first through holes
Data Source
AI summary
A brake dust filtering apparatus (100), comprising: a base (10) which is provided with multiple first through holes (101); a scribing sheet (20) which is provided with multiple second through holes (201) and can be slidably connected to the base (10); a filter screen (30) which is disposed on the side of the base (10) close to a brake caliper (200) and covers the first through holes (101); and a drive member (40) which is used for driving the scribing sheet (20) to slide with respect to the base (10), so as to form an off state in which each of the first through holes (101) and each of the second through holes (201) are staggered and an on state that the multiple first through holes (101) at least partially overlap the multiple second through holes (201). Further disclosed is a vehicle.