Swing Set Spring Assistance for Faster Amplitude Build-Up
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Solution Overview
Problem
Existing swing systems require significant user effort and timing to achieve large swing arcs and prolonged periods of weightlessness, which can be challenging for users who lack the ability to generate optimal energy inputs or time these inputs effectively.
Innovation Solution
A swing set assistance kit featuring a flexible cantilever member, such as a helical spring, attached to the swing seat lines and overhead beam, altering the pendulum's effective length and natural period to facilitate rapid amplitude increase and energy storage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If a user employs traditional pumping actions to increase swing amplitude, then the swing arc gradually increases, but the process requires significant time and energy expenditure
Solution Approach 1:
The spring mechanism is pre-loaded with potential energy before the swing motion begins. When the swing reaches certain positions in its arc, the spring automatically releases stored energy to assist the swing, eliminating the need for the user to gradually build amplitude through repeated pumping actions. This preliminary energy storage and release resolves the contradiction by providing immediate amplitude increase without time-consuming manual effort.
Solution Approach 2:
The spring acts as an intermediary energy storage device between the user's periodic inputs and the swing's motion. Instead of the user directly and continuously adding energy through pumping, the spring mediates by accumulating energy during parts of the swing arc and releasing it at optimal moments, thereby reducing the time and effort required while maintaining energy transfer efficiency.
2Ease of operation
If a user achieves large swing arcs through traditional pumping, then weightlessness and high elevation are experienced, but the process is challenging for users unable to generate optimal energy inputs
Solution Approach 1:
The spring mechanism is designed to automatically engage and disengage based on the swing's position in its arc. The system serves itself by using the swing's own motion to compress the spring during the upward arc and release it during the downward arc, eliminating the need for complex external control mechanisms. This self-service approach makes the system easy to operate while maintaining relatively simple device complexity.
3Adaptability or versatility
If the pendulum system uses only gravitational potential energy storage, then the system operates simply, but the available options for energy storage and transfer are limited
Solution Approach 1:
The system transitions from relying solely on gravitational potential energy (a single energy parameter) to incorporating elastic potential energy in the spring (a second energy parameter). This parameter change enables multiple energy storage and transfer mechanisms: gravitational potential energy during the swing arc and elastic potential energy in the compressed spring. The addition of this parameter increases adaptability while maintaining manageable system complexity through the simple spring 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
Enables users to achieve larger swing arcs and extended periods of weightlessness more quickly and efficiently, reducing start-up time and energy expenditure.
Implementation Method 1
A swing set assistance kit featuring a flexible cantilever member, such as a helical spring, attached to the swing seat lines and overhead beam
Implementation Method 2
A swing set assistance kit featuring a flexible cantilever member, such as a helical spring, attached to the swing seat lines and overhead beam
Implementation Method 3
the user adds energy to the system which is exchanged between high rotational kinetic energy (and speed) at the nadir and high gravitational potential energies at the ends of the swing arc
Implementation Method 4
A swing is essentially a pendulum system for simple harmonic motion
Data Source
AI summary
A swing set assistance kit includes a flexible cantilever member such as a helical spring, with its first end attachable to a base which is a plate or a bracket with a first stud. A transverse bar has a second stud at its mid-section and its ends affixed at intermediate points of the lines attaching the swing seat to an overhead beam of the swing set. An alternative embodiment directed to swing seats such as a tire or other arbitrary seat shapes has seat lines attaching the seat to a seat plate that has the second stud for attachment to the flexible member. The flexible cantilever member and its attachment points to the other swinging components alters the effective length of the pendulum of the system, which may be used to alter the natural period of the system, allowing a user to achieve large amplitude, enjoyable swinging more quickly.