Bicycle Brake Master Cylinder Stroke Adjustment and Easy Bleeding
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Solution Overview
Problem
Existing bicycle brake systems require time-consuming and inefficient maintenance, such as air removal and fluid replacement, and lack adjustable features for operator preference and comfort.
Innovation Solution
The brake system incorporates an improved master cylinder assembly with adjustable initial stroke position and a caliper assembly designed for convenient maintenance, featuring a pushrod and link mechanism for setting the initial stroke position and a tool for facilitating fluid flow and maintenance, allowing for adjustments in braking sensitivity and ease of use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the brake lever is provided at a fixed position, then the structure is simple, but the operator cannot adjust for preference and comfort
Solution Approach 1:
The brake lever is made adjustable along the handlebar with multiple positioning holes, allowing the operator to dynamically change the lever position according to personal preference and comfort requirements, transforming a static fixed-position design into a dynamic adjustable one
Solution Approach 2:
The lever position parameter can be changed by selecting different positioning holes on the handlebar, enabling the operator to adjust the lever's distance from the grip according to operational comfort needs without changing the overall brake system structure
2Productivity
If maintenance procedures are performed on known brake systems, then the caliper assembly can be serviced, but the process is time-consuming and inefficient
Solution Approach 1:
The caliper assembly is designed with modular components including removable caps that provide access to internal elements, allowing maintenance personnel to service specific components independently without disassembling the entire brake system, thereby improving maintenance efficiency
Solution Approach 2:
The piston and seal assembly can be extracted from the caliper body through the removable cap, enabling independent replacement and servicing of wear components without affecting other parts of the brake system, significantly reducing maintenance time
3Reliability
If the piston initial stroke position is not adjustable, then the master cylinder assembly is simpler, but the braking performance cannot be optimized for operator preference
Solution Approach 1:
The piston initial stroke position is pre-adjustable through positioning features in the master cylinder body, allowing the optimal braking engagement point to be set before operation, ensuring consistent and reliable braking performance from the start
Solution Approach 2:
The initial stroke position parameter of the piston can be adjusted by selecting different positioning holes or features within the master cylinder body, enabling optimization of braking engagement characteristics while maintaining structural simplicity
Data Source
AI summary
A brake system for a vehicle such as a bicycle is disclosed. The brake system may comprise an improved master cylinder assembly configured (e.g. manufactured/produced, assembled, etc.) so that a setting and/or adjustment of the brake stroke and/or lever action/actuation can be provided by any one independent mechanism (e.g. without any other adjustment mechanism) or by a combination of adjustment mechanisms (e.g. in a combination with one or more adjustment mechanism); operation of a mechanism for setting and/or adjusting the brake stroke may comprise a feature configured to engage a pushrod (e.g. by direct action on the pushrod or a feature of the pushrod or by indirect action through a link, adjuster, etc. configured to engage the pushrod). The master cylinder assembly may be configured to be set and/or adjusted/tuned within the indicated range to provide an intended performance and/or “feel” for the operator at the brake lever.