Offset-Spoke Wheel Layout for Cantilever Swing Arm Brake Clearance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional spoke wheels with light alloy rims are challenging to apply to cantilever swing arms due to unstable support and interference issues with brake units, compromising controllability and maintenance accessibility.
Innovation Solution
A spoke wheel design featuring a rim with offset wire spokes and multiple mounting flanges, allowing the brake unit to be positioned within a hollow space without interfering with the spokes, providing stable support and improved controllability, especially suitable for cantilever swing arms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If the brake unit is disposed at a position distant from the widthwise center of the spoke wheel, then the brake unit does not interfere with the spoke groups, but the distance between the support arm and the spoke wheel is widened, resulting in unstable support and reduced controllability
Solution Approach 1:
The patent applies asymmetry by positioning the brake unit on one side of the spoke wheel rather than maintaining bilateral symmetry. The clamp arm is configured to hold the brake unit at a location that is offset from the widthwise center, creating an asymmetric arrangement that accommodates the brake unit within the hollow space without interfering with the spoke groups while maintaining stable support through the cantilever structure
2Stability of the object's composition
If the spoke wheel is designed with bilateral symmetry, then the structure is balanced and stable, but the brake unit must be disposed at a position distant from the widthwise center, causing interference with the spoke groups or requiring a twin holding swing arm
Solution Approach 1:
The patent deliberately breaks bilateral symmetry by positioning the brake unit asymmetrically on one side of the spoke wheel. This asymmetric design allows the brake unit to be disposed within the hollow space created by the offset spoke groups, eliminating the need for a complex twin holding swing arm configuration while maintaining structural integrity through the cantilever swing arm design
3Reliability
If the clamp arm holds the brake unit close to the spoke wheel, then support stability and controllability are improved, but the brake unit may interfere with the spoke groups
Solution Approach 1:
The patent resolves the interference issue by utilizing the radial dimension of the spoke wheel structure. The spoke groups are arranged to form a hollow space in the radial direction, and the brake unit is positioned within this hollow space. This dimensional arrangement allows the brake unit to be held close to the spoke wheel for stable support while the offset spoke configuration prevents interference by creating a clear radial path
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A spoke wheel (11) includes a light alloy rim (12), a hub (13), and a plurality of wire spokes (15) connecting the rim (12) with the hub (13). The rim (12) includes mounting flanges (12a and 12g) provided at asymmetrical positions with respect to a widthwise center (O-O) of the rim (12) and is connected with the hub (13) by assembling the spokes (15) to the mounting flanges (12a and 12g). The spokes (15) are disposed by being offset to the widthwise center (O-O) of the rim (12).