Straddle-Type Vehicle Front Fork Stay for External Storage
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Solution Overview
Problem
Straddle-type vehicles, such as motorcycles, lack the ability to attach storage boxes to the outer sides of front fork tubes in the vehicle width direction, limiting storage options and accessibility.
Innovation Solution
A straddle-type vehicle design featuring a stay with a stay-side locking portion that allows storage boxes to be attached to the outer sides of front fork tubes, intersecting with the steering stem and fork tubes, and equipped with multiple locking points to secure the boxes in a position anterior to the front wheel, reducing wind resistance and interference with steering handles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If storage boxes are attached to the rear portion of the vehicle body, then storage capacity is improved, but storage boxes cannot be attached to outer sides of front fork tubes
Solution Approach 1:
The patent extends storage functionality from the traditional rear portion (one location) to multiple dimensions including outer sides of front fork tubes, left and right sides of the vehicle body, and rear portion. This spatial expansion allows storage boxes to be attached at five different locations, resolving the contradiction between adaptability and structural complexity by utilizing existing structural elements in new configurations.
2Object-affected harmful factors
If storage boxes are attached to outer sides of front fork tubes, then wind resistance is reduced, but interference with steering handles may occur
Solution Approach 1:
The patent applies different stay configurations to different locations based on local requirements. At the outer sides of front fork tubes, stays are designed with specific locking portions to secure storage boxes in positions that reduce wind impact. The design ensures that storage boxes are attached at optimal locations without interfering with steering handle operation, addressing local quality needs at each attachment point.
3Reliability
If multiple locking portions are provided on stays, then storage box security is improved, but device complexity increases
Solution Approach 1:
The stay structure is designed with multiple locking portions that can engage with corresponding locking portions on storage boxes at different attachment locations. This universal design allows the same stay configuration to serve multiple functions across different vehicle locations, ensuring reliable storage box attachment without proportionally increasing overall device complexity. The locking mechanism provides secure attachment at all five storage locations.
Data Source
AI summary
A straddle-type vehicle including a vehicle body frame to which a steering unit that supports a front wheel in a steerable manner and a stay to which a storage box is configured to be attached are attached. The vehicle body frame is provided with a head tube. The steering unit includes a steering stem rotatably penetrating the head tube, and a pair of left and right front fork tubes coupled to the steering stem and extending toward an axle of the front wheel. The pair of left and right front fork tubes pivotally supports the axle of the front wheel. The stay is located on an outer side of the front fork tubes in the vehicle width direction, and intersects with at least one of the steering stem and the front fork tubes in a side view.