Brake Lining Pressure Pieces for Uniform Wear
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Solution Overview
Problem
Disc brake pads experience uneven wear and increased weight due to non-optimal pressure distribution, leading to reduced service life and higher operating costs, particularly under adaptive braking conditions.
Innovation Solution
The brake pad design optimizes pressure distribution by positioning pressure pieces to achieve uniform energy density across the friction surface, minimizing weight and deflection through precise placement and sizing of pressure pieces, and incorporating heat-conducting disc-shaped or ring-shaped pressure pieces to manage heat without plastic deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stress or pressure
If additional pressure plates or particularly thick-walled lining carrier plates are used to compensate for unfavorable pressure distribution, then pressure distribution is improved, but weight increases
Solution Approach 1:
The invention applies local quality by positioning pressure pieces at specific locations on the lining carrier plate that correspond to high-stress areas. Instead of uniformly thickening the entire carrier plate, pressure pieces are strategically placed only where needed to redistribute pressure, achieving improved pressure distribution while minimizing weight increase.
Solution Approach 2:
The invention segments the pressure distribution function by using discrete pressure pieces rather than a continuous thick-walled structure. The carrier plate is divided into regions with and without pressure pieces, allowing localized reinforcement only where pressure redistribution is needed, thereby reducing overall weight compared to a uniformly thick plate.
2Stress or pressure
If additional pressure plates or particularly thick-walled lining carrier plates are used to compensate for unfavorable pressure distribution, then pressure distribution is improved, but service life decreases due to uneven wear
Solution Approach 1:
By placing pressure pieces locally at strategic positions, the invention creates a non-uniform pressure distribution that compensates for unfavorable stress patterns. This localized pressure reinforcement ensures more uniform contact pressure across the friction lining surface, preventing uneven wear and extending service life.
Solution Approach 2:
The pressure pieces are pre-positioned on the lining carrier plate during manufacturing to anticipate and compensate for unfavorable pressure distribution before the brake pad is installed. This preliminary arrangement of pressure pieces ensures optimal pressure distribution from the first use, preventing uneven wear development and extending service life.
3Weight of moving object
If the backing plate is made lighter to meet weight optimization demands, then weight is reduced, but pressure distribution becomes more uneven
Solution Approach 1:
The invention allows the backing plate to be lightweight overall while compensating for the resulting pressure distribution issues through locally added pressure pieces. These discrete pressure elements provide targeted reinforcement only where needed, maintaining good pressure distribution without requiring a uniformly heavy plate structure.
Solution Approach 2:
The invention segments the structural reinforcement function into discrete pressure pieces rather than requiring a uniformly thick heavy plate. This segmentation allows the majority of the backing plate to remain thin and lightweight, with localized reinforcement only at critical pressure distribution points, achieving both weight reduction and acceptable pressure distribution.
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 results in uniform wear behavior, reduced weight, and extended service life of brake pads, while maintaining effective pressure distribution and heat management, thus lowering operational costs.
Implementation Method 1
the pressure pieces occur. Depending on the material of the backing plate, contact surfaces of 15 - 35 cm 2 per pressure piece have proven to be sufficient.
Data Source
AI summary
The invention relates to a brake lining for a disk brake which can be installed into a wheel that has a size of 22.5", comprising a ring segment-shaped lining support plate (2) which supports a friction lining, the inner radius Ri of which merges with straight bearing surfaces (5) on both sides, and which has two molded-on pressure pieces (3) that are arranged in a mutually spaced manner on the lining support plate rear face that faces away from the friction lining. The brake lining is designed such that the length (L) of the lining support plate (2) is 245 - 250 mm, the inner radius (Ri) is 115 - 135 mm, and the outer radius (Ra) of the lining support plate (2) is 205 - 220 mm.