Fitness Bicycle Rear Axle Support With Spring-Lock Quick Clamping
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Solution Overview
Problem
Conventional rear wheel axle support assemblies for fitness bicycles are inconvenient and time-consuming to clamp or unclamp the rear wheel axle due to the need to rotate the adjusting ring of the retaining portion.
Innovation Solution
The support assembly features a retaining portion with an outer cylinder, mid cylinder, inner cylinder, retaining rod, and locking block, utilizing a tension spring and sliding ribs to facilitate easy clamping and unclamping by adjusting the distance between the retaining ring and the rear wheel axle through a pin mechanism, allowing for quick engagement and disengagement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the adjusting ring is rotated to clamp or unclamp the rear wheel axle, then the retaining portion can securely hold the axle, but the operation becomes inconvenient and time-consuming
Solution Approach 1:
The patent replaces the traditional threaded adjusting ring mechanism with a spring-loaded locking block system. The locking block engages with locking grooves on the retaining rod under spring force, eliminating the need for rotational adjustment while maintaining secure clamping. This substitution transforms the mechanical operation from rotational threading to linear spring-driven engagement.
Solution Approach 2:
The spring mechanism automatically engages the locking block with the locking grooves when the retaining rod is inserted, providing self-locking functionality. The spring force ensures continuous engagement pressure, and the system self-regulates through the interaction between the locking block teeth and grooves without requiring user intervention beyond initial insertion.
2Reliability
If the adjusting ring is rotated to clamp or unclamp the rear wheel axle, then the retaining portion can adjust the clamping force, but the process becomes time-consuming
Solution Approach 1:
The patent replaces the time-consuming rotational adjustment of the adjusting ring with an instant spring-driven locking mechanism. The locking block automatically engages or disengages from the locking grooves based on the position of the retaining rod, providing immediate clamping force adjustment without rotational movements.
Solution Approach 2:
The spring mechanism provides dynamic response to the user's input, automatically adjusting the locking block position based on the retaining rod insertion depth. The spring force dynamically adapts to maintain optimal engagement, allowing rapid transitions between clamped and unclamped states without fixed adjustment steps.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables rapid and efficient clamping and unclamping of the rear wheel axle, reducing user effort and time by using a compression spring to automatically engage and disengage the retaining ring, enhancing usability.
Implementation Method 1
a tension spring and sliding ribs, allowing for easy clamping and unclamping by adjusting the distance between the retaining ring and the rear wheel axle using a locking block and compression spring mechanism
Data Source
AI summary
A rear wheel axle support assembly for a fitness bicycle comprising: a front rack, a rear rack, and two retaining portions, on an upper portion of a left and a right rods of the front rack provided two coupling seats for connecting the left and the right rods of the rear rack, so that the front rack and the rear rack are connected in a herringbone pattern, the two retaining portions disposed at an upper end of the left and the right rods of the front rack for clamping both ends of a rear wheel axle of a fitness bicycle. The rear wheel axle support assembly is capable of clamping and unclamping the rear wheel axle of a fitness bicycle by using retaining portions.