Multi-Rod Disc Brake Structure for Even Stopping Force
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Solution Overview
Problem
Conventional bicycle brake systems experience uneven stopping force distribution, leading to noise and brake shoe damage due to inadequate engagement structures.
Innovation Solution
A mechanical multi-rod disc brake system with symmetrical swing arms and fixing pistons driven by a multi-rod structure, actuated by a brake cable, which evenly distributes the stopping force to brake the bicycle disc.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a conventional brake shoe with two clamp arms is used, then the brake structure is simple, but the stopping force is unevenly distributed causing noise and brake shoe damage
Solution Approach 1:
The brake system is divided into multiple independent clamp arms (at least three clamp arms instead of two), with each arm independently clamping the brake disc. This segmentation allows the stopping force to be distributed across multiple contact points, ensuring even force distribution and preventing the noise and damage issues associated with uneven force concentration.
2Reliability
If a disc brake with two pads and screw bolts is used, then the engagement structure is improved, but the stopping force is still insufficient
Solution Approach 1:
The brake system uses at least three clamp arms instead of two, increasing the number of clamping points on the brake disc. This segmentation of the clamping function across multiple arms generates greater total stopping force while maintaining a reliable engagement structure.
Solution Approach 2:
The brake system combines multiple clamp arms working simultaneously on the brake disc, merging their clamping forces to produce a powerful combined stopping effect that overcomes the insufficient force of two-pad designs.
3Reliability
If a multi-rod structure with four driving members is used, then the stopping force distribution is even, but the device complexity increases
Solution Approach 1:
The system uses at least three clamp arms with corresponding driving members, segmenting the force application across multiple independent clamping points. This ensures even stopping force distribution while the modular rod structure keeps the complexity manageable through standardized components.
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
The system ensures even stopping force distribution, reducing noise and brake shoe damage, and facilitates easy braking of bicycles by effectively utilizing the multi-rod structure to drive symmetrical swing arms and fixing pistons.
Implementation Method 1
each of the first extension and the second extension has a resilient element fitted on a distal end
Implementation Method 2
the respective one swing arm drives the respective one driving member to swing via the respective one rotary shaft
Implementation Method 3
the two symmetrical fixing pistons are driven by the two symmetrical swing arms to brake the stop disc
Data Source
AI summary
A mechanical multi-rod disc brake contains: a braking unit including an engagement structure having two bases, two swing arms, two wear-resistant sleeves, and two fixing pistons between which an accommodation space is defined so as to accommodate a stop disc. A respective one wear-resistant sleeve has a respective one fixing piston. A drive unit includes a multi-rod structure, and a respective one rotary shaft is rotatably connected with a respective one driven bolt rotatably connected with a respective one driving member via a respective one connection portion. A respective one joining element has a receiving hole rotatably connected with of a first extension of a first connection stein or a second extension of a second connection stein. Each of the first extension and the second extension has a resilient element, and the first and second extensions are connected with a brake cable via the first and second apertures.