Jump Rope Assembly With Oil-Impregnated Bushing
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Solution Overview
Problem
Traditional jump ropes are limited by rotational friction and drag, leading to reduced maximum speed and uniformity in rotation, and existing solutions either fail to address torque buildup or result in handle displacement due to fixed rope ends.
Innovation Solution
A jump rope design incorporating an oil-impregnated bushing to minimize friction and drag, with a braided cable to reduce air resistance, and adjustable length to ensure proper fit, allowing the rope ends to freely rotate about the centerline of the rope body, preventing torque buildup and maintaining handle stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the rope ends are fixed at the rotational component or head of each handle, then the rope structure is stable, but torque builds up in the rope making rotation non-uniform
Solution Approach 1:
The patent applies the dynamics principle by allowing the rope ends to rotate freely within the handle head about an axis formed by the centerline of the rope body. This dynamic configuration enables the rope to adapt its orientation during rotation, preventing torque buildup while maintaining structural stability through the collar or stop mechanism that limits excessive movement.
2Ease of operation
If a collar or stop is placed at each end of the rope to prevent torque buildup, then rotation uniformity improves, but the handles become displaced along the length of the rope
Solution Approach 1:
The patent resolves this contradiction by implementing a dynamic system where the rope end can rotate freely within the handle head about the rope's centerline axis. The collar or stop mechanism dynamically adjusts to allow this rotation while preventing handle displacement, maintaining both rotation uniformity and handle position stability simultaneously.
3Device complexity
If traditional handles are used where the rope exits the end of the handle, then the structure is simple, but rotational friction and drag limit maximum rotational speed
Solution Approach 1:
The patent introduces an intermediary rotational component or head within the handle assembly that facilitates smooth rotation of the rope. This intermediary element reduces direct friction between the rope and handle by providing a dedicated rotation interface, thereby increasing rotational speed while maintaining relatively simple overall structure.
4Device complexity
If the rope ends are not protected, then the structure is simple, but exposed ends present safety concerns and the rope suffers from fraying and burrs
Solution Approach 1:
The patent merges the end protection function with the existing handle structure by incorporating collars or stops that serve dual purposes: preventing torque buildup during rotation and protecting the rope ends from fraying and burrs. This integration provides enhanced reliability without significantly increasing structural complexity.
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 design achieves high rotational speed with reduced friction and drag, ensuring uniform rope rotation and preventing torque buildup, while maintaining handle stability and extending the rope's lifespan through protective coatings.
Implementation Method 1
the rotational friction and drag that are generated limit the maximum rotational speed of the rope
Implementation Method 2
An object of the disclosure is to provide a jump rope utilizing a unique oil impregnated bushing design as to minimize rotational friction and drag during rope jumping
Implementation Method 3
this requires a rope with the least amount of friction and air resistance to achieve the highest number of rotations in the least amount of time
Data Source
AI summary
Disclosed is a jump rope comprising: an oil impregnated bushing; having a pair of handles with an external surface treatment. Additionally, the rope may include a fastener attached to each end and secured within the head of the jump rope yet still free to rotate about an axis formed by the centerline of the rope body. In some configurations a universal joint is attached to each end and secured to the jump rope handle, with one end of the input yoke acting as a column for rotation and one end of the output yoke used to secure the rope, and both free ends of each yoke attaching to the cross-trunnion to complete the assembly.