Rear Suspension Spring Positioning for Two-Wheel Width Reduction
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Solution Overview
Problem
The existing rear-wheel suspension systems for two-wheeled vehicles face challenges in reducing vehicle width due to the close arrangement of buffers and coil springs, which limits the system's dimensions and interferes with vehicle body component placement.
Innovation Solution
The proposed solution involves a rear-wheel suspension system where the coil spring is positioned lower than the tubular buffer, allowing a vehicle body component, such as a sub-tank, to be integrated closely above the spring, shifting the vehicle body components inward and reducing the vehicle's width by the spring's diameter.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the buffer and coil spring are disposed close to each other, then the space utilization is improved, but the vehicle width cannot be reduced and component placement is limited
Solution Approach 1:
The patent repositions the vehicle body component part from a lateral position (width dimension) to a vertical position above the coil spring. By placing the component part in the vertical dimension rather than the lateral dimension, the system achieves better space utilization without increasing vehicle width, effectively resolving the contradiction between compact arrangement and width reduction.
2Device complexity
If the vehicle body component part is disposed at a lateral position of the coil spring, then the assembly is compact, but the dimensions of the system are limited
Solution Approach 1:
The invention moves the vehicle body component part from the lateral dimension to the vertical dimension, positioning it above the coil spring rather than beside it. This dimensional transition allows the component to be integrated into the existing suspension structure without increasing lateral dimensions, thereby reducing overall system width while maintaining compact assembly.
Data Source
AI summary
A rear-wheel suspension system for a two-wheeled vehicle includes a pair of right- and left-side center frames; a swing arm; and a shock absorber, wherein the shock absorber includes a tubular buffer and a spring, wherein the intake system part is a curved tubular member, wherein a position of the spring is shifted downwardly so that the intake system part are moved toward an interior of the vehicle body by a dimension corresponding to the spring, wherein a lower end of the intake system part is above the upper end of the spring, wherein a part of the intake system part is closer than an outer end of the spring to the center of the tubular buffer, and wherein the shock absorber and the intake system part are disposed between a pair of right- and left-side center frames.