Bicycle Wheel Securing Structure with Self-Positioning Adjustment
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Solution Overview
Problem
Conventional bicycle wheel securing structures require tools to stop the rotation of the adjustment member, making it difficult to easily secure the wheel to the frame, and are prone to foreign matter entering the slit or hole, which complicates the stopping process.
Innovation Solution
A bicycle wheel securing structure that includes a shaft member, a head member, a lever member, an adjustment member, and a positioning mechanism, where the positioning mechanism allows the adjustment member to be easily positioned and stopped, reducing the need for tools and preventing foreign matter entry by regulating movement with a movement regulation part.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a threaded member and slit are provided in the adjustment member to stop rotation, then the rotation can be stopped, but a tool becomes necessary and foreign matter can enter the slit
Solution Approach 1:
The patent removes the threaded member and slit from the adjustment member, extracting the problematic elements that required tools and allowed foreign matter entry. Instead, a positioning mechanism with positioning protrusions and grooves is introduced to achieve rotation stopping without the need for threaded members or slits.
Solution Approach 2:
The positioning mechanism enables the adjustment member to self-position and self-lock at specific angular positions through the interaction of positioning protrusions and grooves, eliminating the need for external tools to stop rotation.
2Reliability
If a threaded member is used to stop rotation of the adjustment member, then rotation is stopped, but the structure becomes more complex and foreign matter can enter
Solution Approach 1:
The patent eliminates the threaded member from the adjustment member structure, removing the complexity associated with threads, slits, and additional components. The positioning mechanism uses simpler geometric features (protrusions and grooves) that are integrated into the existing structure.
Solution Approach 2:
The positioning function is merged with the adjustment member itself through integrated positioning protrusions and grooves, rather than using separate threaded members and slits. This consolidation simplifies the overall structure while maintaining the rotation stopping capability.
3Reliability
If the adjustment member has a slit and hole for the threaded member, then rotation can be stopped, but foreign matter can easily enter the mechanism
Solution Approach 1:
The patent removes the slit and hole from the adjustment member, eliminating the openings that allowed foreign matter to enter the mechanism. The positioning protrusions and grooves are designed to close or minimize openings, preventing foreign matter ingress while maintaining the rotation stopping function.
Data Source
AI summary
A bicycle wheel securing structure is provided with a shaft member, a head member, a lever member, an adjustment member and a positioning mechanism. The shaft member has a first end portion, a second end portion and an engaging part. The head member is movably disposed on the first end portion. The lever member is movably provided on the head member around a pivot axis that intersects with an axial direction of the shaft member to move the shaft member in the axial direction with respect to the head member. The adjustment member is movably provided on the head member in the axial direction and that can adjust a final fixing position of the lever member. The positioning mechanism is provided between the head member and the adjustment member to selectively maintain a position of the adjustment member in a plurality of axially spaced apart locations.