Brake Pad Dust Collection Groove for Stable Suction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing brake pad designs suffer from a decrease in suction performance as the friction material lining wears, leading to reduced capture of particles and dust, resulting in their release into the atmosphere.
Innovation Solution
The brake pad incorporates a collection groove extended by a duct with a cross-sectional jump, maintaining constant suction performance throughout the pad's life by ensuring a consistent cross-sectional area and efficient particle and dust collection in both directions of movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If a collection groove is provided in the lining near the rear edge, then particle and dust capture is improved, but suction performance decreases as the lining wears
Solution Approach 1:
The collection groove is segmented into two functional parts: a first portion open on the friction face for particle collection, and a second portion (duct) open away from the friction face with a constant cross-sectional area for maintaining suction performance. This segmentation allows each part to perform its specific function optimally throughout the lining's wear cycle.
Solution Approach 2:
The system adapts to the dynamic wear condition of the lining by designing the duct portion with a constant cross-sectional area that remains unaffected by lining thickness changes. This dynamic adaptation ensures suction performance is maintained despite the decreasing lining thickness during operation.
2Productivity
If the collection groove extends along the rear edge, then particle capture efficiency is improved, but the cross-sectional area varies with lining wear
Solution Approach 1:
The collection groove is divided into a first portion that extends along the rear edge for efficient particle capture, and a second portion (duct) with a constant cross-sectional area. This segmentation allows the first portion to maximize particle collection while the second portion maintains stable suction performance independent of lining wear.
Solution Approach 2:
Different portions of the collection groove are assigned different geometric qualities: the first portion has a geometry optimized for particle capture along the rear edge, while the second portion has a constant cross-sectional area specifically designed to maintain stable suction performance throughout the lining's operational life.
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 design maintains consistent suction performance and efficient particle and dust collection, reducing atmospheric pollution by preventing the release of harmful particles and dust during the brake pad's operational life.
Implementation Method 1
during operation, a negative pressure exists between the inlet of the duct and at least one collection groove one on each side of the duct
Implementation Method 2
friction braking emits particles and dust which result from abrasion of the brake pads against the rotating member
Implementation Method 3
friction braking emits particles and dust which result from abrasion of the brake pads against the rotating member
Data Source
AI summary
A brake pad includes a sole plate with outer and inner faces, and a lining made of friction material fixed to the inner face, the lining being delimited by friction and attachment faces, and inner, outer, rear, and front edges. The lining has a collection groove open on the friction face near the rear edge, the sole plate including a suction hole in fluid communication with the collection groove, this hole being connected to a negative pressure source. The collection groove is extended, at an end, by a duct of which the outer end is open away from the friction face, via an inlet, and of which the inner end is open in the collection groove via an outlet forming a cross-sectional jump with the groove. During operation, a negative pressure exists between the inlet and the collection groove one on each side of the duct.