Bilaterally Positionable Bicycle Rack With Load-Locking Rotation
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Solution Overview
Problem
Existing bicycle racks with fixed directions are not commutable and require manual adjustment, leading to inconvenient operation and reduced service life due to rigid structures and wear.
Innovation Solution
A bilaterally positionable and rotatable bicycle rack with a hanging frame connected via a rotating shaft, featuring a no-load and load limit assembly with elastic members and limit slots/posts for stable locking and smooth rotation, allowing easy installation and adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the hanging frame is made movable to allow direction adjustment, then the adaptability is improved, but the hanging frame becomes unstable during loading and prone to rotation
Solution Approach 1:
The hanging frame transitions from a static fixed-direction structure to a dynamic adjustable-direction structure through the rotating shaft mechanism. The frame can rotate to different angles for direction adjustment, then lock into position using the limit assemblies, achieving both adaptability and stability as needed.
Solution Approach 2:
The rotation function is extracted from the main hanging frame structure and isolated into a separate rotating shaft mechanism with limit assemblies. This allows the frame to gain directional adjustability while the stability function is handled by the limit slots/posts that prevent unwanted rotation during loading.
2Strength
If a rigid threaded stud structure is used for rotation, then the structural strength is improved, but the service life is reduced due to wear and difficulty in rotation after long use
Solution Approach 1:
The rigid threaded stud mechanical system is replaced with a rotating shaft system that incorporates bearings. This substitution reduces friction and wear, allowing the hanging frame to rotate smoothly over extended periods while maintaining structural strength through the limit assemblies that prevent excessive rotation.
3Adaptability or versatility
If manual control of hanging plate angle is required, then the adaptability is improved, but the operation becomes time-consuming and laborious
Solution Approach 1:
The limit assemblies with limit slots and limit posts provide self-locking functionality. When the hanging frame rotates to the desired angle, the limit post automatically engages with the limit slot to lock the position, eliminating the need for manual angle control and reducing operation time while maintaining adaptability.
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
Enhances stability and convenience by preventing unwanted rotation during loading, extending service life through reduced friction and enabling easy installation and multiple locking angles.
Implementation Method 1
an elastic member is provided in the gap, and is located at a lower end of the rotating shaft, so as to make the hanging frame elastically abut against an uppermost position and elastically movable downwards
Implementation Method 2
a rotating shaft arranged in a vertical direction... both ends of the rotating shaft outside the bearing are detachably connected to the fixing member
Data Source
AI summary
A bilaterally positionable and rotatable bicycle rack includes a fixing member, a hanging frame, and a rotating shaft. A gap is provided between the hanging frame and the fixing member in the vertical direction to make the hanging frame movable at least in the vertical direction. An elastic member is provided in the gap, and located at a lower end of the rotating shaft, to make the hanging frame abut against an uppermost position and elastically movable downwards. A no-load limit assembly and a load limit assembly are provided on an outer side of the rotating shaft, which are configured to operate in a no-load state and a load state, respectively. In the load state, since a gravity of the bicycle is greater than an elasticity force of the elastic member, the load limit assembly is locked.