Motorcycle Caliper Axial Rearrangement for Compact Width
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Solution Overview
Problem
Conventional two-wheeled motor vehicles with continuously variable transmission and a mechanical caliper for quiescence have an increased width due to the arrangement of the service caliper and exhaust muffler around the rear wheel, restricting the bank angle and requiring a wider vehicle design.
Innovation Solution
The vehicle design includes a body frame with a swingable rear wheel, where the exhaust muffler is attached to the side of the body frame, and the brake disc and calipers are positioned to minimize overlap with the exhaust muffler, allowing for a reduced vehicle width by separating and strategically placing the mechanical and service calipers below the exhaust muffler's axial positions, enhancing cooling and maintainability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the service caliper and mechanical caliper for quiescence are arranged around the rear wheel with the exhaust muffler, then the braking function is achieved, but the vehicle width increases
Solution Approach 1:
The patent applies dimensional rearrangement by positioning the service caliper and mechanical caliper for quiescence in the axial direction below the exhaust muffler, rather than arranging them radially around the rear wheel. This vertical stacking in the axial dimension allows all components to coexist without increasing vehicle width, effectively resolving the contradiction between achieving complete braking function and maintaining compact vehicle dimensions.
2Reliability
If the service caliper and mechanical caliper for quiescence are arranged around the rear wheel, then the braking function is achieved, but the bank angle is restricted
Solution Approach 1:
By rearranging the calipers from a radial arrangement around the wheel to an axial arrangement below the exhaust muffler, the patent frees up the lateral space around the rear wheel. This dimensional change allows the vehicle to achieve greater bank angles during cornering without the calipers interfering with the wheel's angular movement, thus resolving the contradiction between braking function and banking adaptability.
3Ease of repair
If the service caliper and mechanical caliper for quiescence are disposed separately on the brake disc, then maintenance becomes easier, but the arrangement complexity increases
Solution Approach 1:
The patent merges the service caliper and mechanical caliper for quiescence into a unified axial arrangement below the exhaust muffler, where both calipers share the same spatial zone and mounting structure. This combined arrangement simplifies the overall layout compared to separate radial positioning, while still allowing individual maintenance access. The shared axial space reduces the number of mounting points and simplifies the structural framework, resolving the contradiction between ease of maintenance and arrangement complexity.
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 configuration reduces the vehicle width, improves cooling efficiency, and simplifies maintenance by spacing the calipers to avoid overlap with the exhaust muffler, maintaining efficient braking performance while allowing for better air flow and reduced radiation heat impact.
Implementation Method 1
the brake disc, service caliper and mechanical caliper for quiescence are attached to the same side as the exhaust muffler... an exposed surface of the brake disc is formed rearward of and below the rear wheel axle, whereby the brake disc can be cooled efficiently
Data Source
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AI summary
A two-wheeled motor vehicle (1) that includes a body frame (2). A rear wheel (9) is swingable through an area relative to the body frame (2) and a brake disk (52) is attached thereto. An exhaust muffler (39) is at a side of the rear wheel (9) and attached to a side of the body frame (2). A service caliper (53) is on the brake disc (52) for producing a braking force in time of traveling. A mechanical caliper (54) for quiescence prevents rotation of the brake disc (52)and is disposed on the brake disc (52). In a side view and in every position within the entire area through which the rear wheel (9) is swingable, the mechanical caliper (54) and the service caliper (53) are located below different sites of the exhaust muffler (39) that are each closest to the rear wheel (9) than any other site of the exhaust muffler (39) in respective cross sections taken in different axial positions of the exhaust muffler (39).