Bicycle Disc Brake Pad Visual Wear Indicator
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Solution Overview
Problem
Bicycle disc brake pads require manual thickness measurement to determine wear levels, which is inconvenient for cyclists.
Innovation Solution
A visual wearing indicator is integrated into the pad's friction-wearing material, featuring a step with an inclined surface that decreases in height as the pad wears, allowing cyclists to assess wear without manual intervention, and a beveled lower portion for easy brake disc installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual thickness measurement is used to determine pad wear, then measurement precision is maintained, but ease of operation deteriorates due to requiring periodic manual intervention
Solution Approach 1:
The pad serves itself by providing wear information through the visual indicator. The graduated markings on the pad body automatically display the remaining thickness as the pad wears, eliminating the need for external measurement tools or manual intervention by the cyclist.
Solution Approach 2:
The visual indicator uses color-coded graduated markings (different colors for different thickness ranges) to provide immediate visual feedback on pad wear status. This allows the cyclist to quickly assess wear level at a glance without manual measurement.
2Ease of operation
If visual wearing indicator is added to the pad, then ease of operation improves by enabling visual wear assessment, but device complexity increases
Solution Approach 1:
The pad body is segmented with graduated markings divided into multiple thickness ranges, each marked with different colors. This segmentation allows the indicator to provide detailed wear information across the entire service life of the pad while maintaining a simple overall structure.
Solution Approach 2:
The visual indicator serves multiple functions: it indicates remaining thickness, signals when replacement is needed, and provides a quick visual assessment all in one integrated feature. The same graduated markings structure handles all wear indication needs without requiring separate mechanisms.
3Ease of operation
If brake lining material is reduced to accommodate visual indicator, then ease of operation improves, but strength deteriorates
Solution Approach 1:
The visual indicator markings are applied locally on the outer surface of the pad body rather than requiring reduction of the brake lining thickness throughout. This localized approach allows the indicator feature to be added without compromising the overall structural integrity and braking strength of the pad.
Data Source
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AI summary
The invention relates to a pad (1) for a bicycle disc brake, comprising a support frame (10) and an element (20) made of friction-wearing material associated with said support frame (10). The element (20) made of friction-wearing material comprises a visual wearing indicator (25), which preferably is defined on an upper portion of the element (20) made of friction-wearing material, more preferably at a side end area of said upper portion. The invention also relates to a bicycle disc brake comprising a pair of pads (1) of the type described above.