Bicycle Fastening Device Rotary Knob Leverage
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Solution Overview
Problem
Existing bicycle fastening devices for carriers are cumbersome to operate and have accessibility issues when mounted on a vehicle, with limited load capacity and durability.
Innovation Solution
A bicycle fastening device featuring a connecting arm with a clamping component and connecting element, where the clamping component includes a hand-operated rotary knob for adjustable clamping, and a rotatable connection between the arm and the connecting element, allowing for easy operation and increased load capacity through a leverage effect and resilient clamp design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the locking means is mounted on the vehicle, then the bicycle can be securely fastened to the carrier, but the operation becomes cumbersome and accessibility is reduced
Solution Approach 1:
The locking means is inverted from its conventional position on the vehicle to be integrated into the connecting arm that interfaces with the bicycle. This allows the user to operate the locking mechanism directly at the point of connection, dramatically improving accessibility while maintaining secure fastening through the same clamping action
2Strength
If a long connecting arm is used, then the leverage effect increases load capacity, but greater forces act between the arm and clamping component
Solution Approach 1:
The clamping component is designed with dynamic adjustment capability through the hand-operated rotary knob, allowing the user to optimize the clamping force in real-time. This enables the system to handle the increased forces from the long arm's leverage effect while maintaining secure connection under varying load conditions
3Adaptability or versatility
If the clamp is made resilient with adjustable jaws, then the clamping adaptability improves, but the complexity of the clamping component increases
Solution Approach 1:
The clamping component is segmented into two pivotable jaws that can independently adjust to accommodate different tube diameters and shapes. This segmentation provides adaptability for various bicycle frame types while keeping each individual jaw relatively simple in structure, managed by the single rotary knob mechanism
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
The solution enhances ease of use, load capacity, and durability by providing a user-friendly operation mechanism and robust attachment system, reducing the risk of breakage and separation during use.
Implementation Method 1
The clamping component has a clamping screw which can be operated by hand by means of a rotary knob. The clamp can be adjusted narrower or wider with the help of the rotary knob
Implementation Method 2
The length of the arm is preferably greater than two, four, five or ten times the diameter of the arm. The advantages of the invention are particularly evident in the case of such a long arm in which, due to the leverage effect, great forces act between the arm and the clamping component
Data Source
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AI summary
In a bicycle fastening device (100) for fastening a bicycle to a bicycle carrier, with a connecting arm (1) on which connecting elements (2, 2') are arranged, which include a clamping component (3) for connecting the arm (1) to the bicycle carrier, wherein the clamping component (3) has a clamping screw (5) which can be operated by hand by means of a rotary knob (6), the rotary knob (6) is arranged on the side (F) of the clamping component (3) facing the connecting arm (1).