Saddle-ride Vehicle Wheel Spoke Design for Brake Rigidity
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional wheel structures for saddle-ride type vehicles with disc attachment boss parts face issues of increased weight and material cost due to the need for reinforcing ribs to prevent spoke deformation during braking.
Innovation Solution
The wheel structure features disc attachment boss parts positioned at the middle or outer side of the spoke parts, with a Y-shaped configuration and recessed parts to reduce material usage and weight, while maintaining twisting rigidity by optimizing the placement and design of the disc attachment boss parts and spoke geometry.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If reinforcing ribs are provided between the disc attachment boss and the hub part, then the rigidity of the spoke part is increased, but the weight of the wheel increases
Solution Approach 1:
The spoke part is divided into multiple segments including a hub-side spoke part, rim-side spoke parts, and intermediate spoke parts. This segmentation allows each segment to be optimized independently for strength and weight, eliminating the need for additional reinforcing ribs while maintaining overall rigidity.
Solution Approach 2:
Different sections of the spoke part are designed with different cross-sectional areas and thicknesses according to their specific functional requirements. The hub-side spoke part has different dimensions than the rim-side spoke parts, allowing material to be concentrated where needed for rigidity while reducing weight in less critical areas.
2Strength
If reinforcing ribs are provided between the disc attachment boss and the hub part, then the rigidity of the spoke part is increased, but the material cost increases
Solution Approach 1:
The spoke part is divided into multiple segments including a hub-side spoke part, rim-side spoke parts, and intermediate spoke parts. This segmentation allows each segment to be optimized independently for strength and weight, eliminating the need for additional reinforcing ribs while maintaining overall rigidity.
Solution Approach 2:
The cross-sectional parameters (area, thickness) of different spoke part segments are varied to match their specific load requirements. This parameter optimization reduces material usage in non-critical areas while maintaining necessary rigidity, thereby reducing material cost.
3Device complexity
If the disc attachment boss is positioned closer to the hub part, then the structural simplicity is maintained, but the amount of deformation of the spoke part during braking increases
Solution Approach 1:
The spoke part is divided into multiple segments including a hub-side spoke part, rim-side spoke parts, and intermediate spoke parts. This segmentation allows each segment to be optimized independently for strength and weight, eliminating the need for additional reinforcing ribs while maintaining overall rigidity.
Solution Approach 2:
Different sections of the spoke part are designed with different cross-sectional areas and thicknesses according to their specific functional requirements. The hub-side spoke part has different dimensions than the rim-side spoke parts, allowing material to be concentrated where needed for rigidity while reducing weight in less critical areas.
Data Source
AI summary
A wheel for saddle-ride type vehicle is formed of a hub part, multiple spoke parts, and a rim part. The wheel includes disc attachment boss parts to which a brake disc is attached and which are provided, in a manner disposed in a vehicle width direction, integrally on one side of the multiple spoke parts, at middle portions thereof in a radial direction of the wheel. Each of the multiple spoke parts has a crotch part where one hub-side spoke part splits into two rim-side spoke parts in the vehicle side view.