Saddle Vehicle Rear Fender Frame Rigidity via Shock Absorber Bracket
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Solution Overview
Problem
Saddle type vehicles face a challenge in enhancing the supporting rigidity of the rear fender frame while maintaining the freedom of shape for the vehicle body frame, as existing solutions restrict the degree of freedom to achieve sufficient rigidity.
Innovation Solution
The implementation of a rear fender frame that includes a shock absorber bracket attached to the vehicle body frame, with the front region co-fastened to the shock absorber bracket and the remaining supported portions fixed to the vehicle body frame, along with a seat supporting plate that couples side frame portions and accommodates a battery box, enhancing rigidity and reducing weight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If three bolt fastening portions are provided at each side of the vehicle body frame main body to support the rear fender frame with high rigidity, then the supporting rigidity of the rear fender frame is improved, but the degree of freedom of the shape of the vehicle body frame main body is restricted
Solution Approach 1:
The patent combines the fastening function for the rear fender frame with the shock absorber bracket, which is already attached to the vehicle body frame main body. The front region of the rear fender frame is co-fastened to the shock absorber bracket together with the upper end portion of the rear shock absorber, merging two fastening functions into one structural element. This eliminates the need for separate bolt fastening portions while maintaining supporting rigidity and preserving design freedom of the vehicle body frame.
2Strength
If multiple supported portions are fixed to the vehicle body frame main body to enhance rigidity, then the supporting rigidity is improved, but the number of fastening members and structural complexity increases
Solution Approach 1:
The patent merges the fastening of the rear fender frame with the attachment of the shock absorber by co-fastening both to the same shock absorber bracket. This reduces the number of separate fastening members and simplifies the overall structure while maintaining the necessary supporting rigidity through the combined fastening points.
Data Source
AI summary
A saddle type vehicle wherein the supporting rigidity of a rear fender frame is enhanced while securing a degree of freedom of a shape of a vehicle body frame main body. A shock absorber bracket wherein an upper end portion of a rear shock absorber for supporting a rear wheel thereon is coupled and attached to a vehicle body frame main body. A rear fender frame includes a plurality of supported portions in a front region thereof. At least part of the plurality of supported portions is co-fastened to the shock absorber bracket together with the upper end portion of the rear shock absorber, and the remaining supported portions are fixed to the vehicle body frame main body.