Bicycle Wheel Mount With Retaining Axle
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Solution Overview
Problem
Existing wheel mounts with quick-release axles lack precise alignment and stability, leading to potential wheel misalignment and grinding noises, especially with disc brakes, and pose a risk of axle loss during assembly due to the need for manual handling and precise positioning.
Innovation Solution
A wheel mount design featuring a thru-axle with a circumferentially closed through-hole and a fixing device, combined with a loss protection mechanism, such as a flexible element, latching device, or magnetic retaining device, that secures the quick-release axle in place, preventing complete detachment and ensuring precise alignment and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a quick-release axle is used for wheel mounting, then the assembly process is simplified and the axle can be quickly installed and removed, but the wheel position is not precisely defined leading to misalignment and grinding noises
Solution Approach 1:
The axle system is segmented into a quick-release component for easy insertion and a separate positioning component (such as a定位 mechanism or shaped interface) that ensures precise wheel alignment. This allows the axle to provide both quick assembly capability and precise positioning function through distinct structural elements.
2Manufacturing precision
If a thru-axle with fixing device is used, then wheel alignment precision and stability are improved, but the assembly process becomes more complex and the axle can be lost during handling
Solution Approach 1:
The fixing device is extracted as a separate, integrated feature of the dropout rather than a complex separate component. The through-hole in the dropout serves as both the insertion path and the retention mechanism, eliminating the need for separate fixing hardware and simplifying the overall assembly process while maintaining precision.
3Manufacturing precision
If a thru-axle with fixing device is used, then wheel alignment precision is improved, but the risk of axle loss during assembly increases due to manual handling requirements
Solution Approach 1:
The axle is preliminarily retained by the through-hole structure in the dropout, which physically prevents the axle from being completely removed during assembly operations. This preliminary retention action eliminates the need for continuous manual handling and prevents axle loss while the wheel is being positioned and secured.
Data Source
Figure 1~4
Figure 5~8
Figure 9~12
AI summary
Wheel mount (1), in particular for a bicycle, with at least two opposite dropouts (2, 3) and at least one axle (4) for a wheel, wherein one of the dropouts (2) has a through-hole (5), in particular a circumferentially closed one, and the dropout (3) opposite it has a fixing device (6) for the axle (4), and the axle (4) is mounted in the through-hole (5) in a fixed operating state and is fixed in and/or on the fixing device (6) with a fixing end (7) of the axle (4), and in a released operating state the axle (4) is detached from the fixing device (6) and is slidably mounted in the through-hole (5) along a longitudinal axis (8) of the axle (4), wherein the wheel mount (1) has a retaining device (9) for the axle (4) in the released operating state. (Fig. 5)