Bicycle Derailleur Chain Guide Assembly with Composite Reinforcement
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Solution Overview
Problem
Current bicycle designs, particularly those using carbon fiber frames, do not adequately achieve weight reduction due to insufficient advancements in materials and structural reinforcement, leading to a need for more effective lightweight solutions in chain guide assemblies.
Innovation Solution
The use of non-metallic materials such as carbon fiber compounds for the inner and outer plates and connecting bridges in the chain guide assembly, combined with metal structural reinforcement sheets, enhances the lightweight and durability of the bicycle derailleur system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If non-metallic materials are used for chain guide assembly components, then weight is reduced, but structural strength may be compromised
Solution Approach 1:
The patent employs composite materials strategy by combining non-metallic materials (carbon fiber compounds, glass fiber compounds, or aramid fiber compounds) with metallic reinforcement sheets (aluminum, magnesium, or titanium). This composite construction allows the chain guide assembly to achieve both weight reduction from the non-metallic components and structural strength enhancement from the metallic reinforcement sheets, effectively resolving the contradiction between weight reduction and strength maintenance.
2Weight of moving object
If non-metallic materials are used for chain guide assembly components, then weight is reduced, but durability may be compromised
Solution Approach 1:
The durability enhancement is achieved through the composite material construction where metallic reinforcement sheets are integrated with non-metallic components. The metal sheets provide enhanced wear resistance and structural integrity, while the non-metallic materials maintain low weight. This composite approach ensures the chain guide assembly withstands the demanding conditions of chain guidance while remaining lightweight.
3Strength
If structural reinforcement sheets are added to non-metallic components, then strength is enhanced, but device complexity increases
Solution Approach 1:
The chain guide assembly is segmented into distinct functional components: non-metallic structural elements (inner plate, outer plate, connecting bridges) and separate metallic reinforcement sheets. This segmentation allows each component to be optimized independently for its specific function, with the reinforcement sheets strategically placed only where strength enhancement is needed, rather than reinforcing the entire assembly uniformly.
Solution Approach 2:
The metallic reinforcement sheets are applied locally to specific areas of the non-metallic components where structural strength is most critical, rather than uniformly across all surfaces. This local quality approach enhances strength where needed while minimizing the addition of complexity and weight, allowing the majority of the assembly to remain simple and lightweight.
Data Source
AI summary
The disclosure provides a chain guide assembly configured to be mounted on a linkage assembly of a bicycle derailleur. The chain guide assembly includes an inner plate, an outer plate, a first connecting bridge and a second connecting bridge. The outer plate is spaced apart from the inner plate. Two opposite sides of the first connecting bridge are respectively connected to the inner plate and the outer plate. Two opposite sides of the second connecting bridge are respectively connected to the inner plate and the outer plate. The inner plate, the outer plate, the first connecting bridge, and the second connecting bridge are made of a single piece. In addition, the disclosure also provides a bicycle derailleur having the chain guide assembly and a structural reinforcement sheet of the chain guide assembly.