Yo-Yo Wings Pivot to Create Dynamic Visual Effects
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Traditional yo-yos lack innovative visual effects to maintain popularity and attract attention, as they primarily rely on color and design, which are not sufficient to engage users.
Innovation Solution
An expanding and contracting yo-yo design featuring pivotally attached overlapping wings that unfold like petals and form a dome shape, utilizing centrifugal and centripetal forces, along with air flow and resilient bias, to create dynamic visual effects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If traditional yo-yo design with flat disks and static colors is used, then manufacturing is simple and structure is basic, but visual appeal and user engagement are insufficient
Solution Approach 1:
The yo-yo incorporates wings that dynamically change shape between contracted (dome) and expanded (unfolded) configurations during operation. This dynamic transformation creates varying visual effects and air flow patterns, enhancing user engagement while maintaining a relatively simple base structure of disks connected by a pin.
Solution Approach 2:
The yo-yo is divided into multiple functional segments: two disks, a central pin, and multiple wings that can independently pivot. This segmentation allows the wings to move relative to the disks, creating the dynamic visual effects needed to improve appeal without complicating the overall manufacturing process.
2Adaptability or versatility
If wings are added to create dynamic visual effects, then user engagement improves, but device complexity increases
Solution Approach 1:
Multiple functions are merged into the wing structure: the wings serve as both decorative elements for visual appeal and as aerodynamic surfaces that interact with air flow. The same structural components that enable movement also provide the visual transformation, reducing the need for separate mechanisms.
Solution Approach 2:
The wings utilize the yo-yo's own operational forces (centrifugal force during rotation, air flow during descent) to automatically trigger their transformation from contracted to expanded states. This self-actuating mechanism eliminates the need for external motors or complex control systems, keeping the device relatively simple.
3Ease of operation
If resilient bias mechanism is added to control wing movement, then wing transformation is controlled, but manufacturing complexity increases
Solution Approach 1:
The resilient bias mechanism uses simple, inexpensive elastic elements (such as rubber bands or elastic membranes) rather than complex mechanical springs or motors. These inexpensive components are easy to manufacture and integrate, providing sufficient control functionality without significantly increasing manufacturing 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 yo-yo's wings alternately pivot and unfold, providing enhanced visual appeal through dynamic motion and shape changes, maintaining user engagement and interest.
Implementation Method 1
When the yo-yo is dropped and pulled back in, centrifugal force, centripetal force, alternate lift and drag of air flow, and resilient bias cause the wings to alternately pivot and unfold outward
Implementation Method 2
When the yo-yo is dropped and pulled back in, centrifugal force, centripetal force, alternate lift and drag of air flow, and resilient bias cause the wings to alternately pivot and unfold outward
Implementation Method 3
When the yo-yo is dropped and pulled back in, centrifugal force, centripetal force, alternate lift and drag of air flow, and resilient bias cause the wings to alternately pivot and unfold outward
Implementation Method 4
When the yo-yo is dropped and pulled back in, centrifugal force, centripetal force, alternate lift and drag of air flow, and resilient bias cause the wings to alternately pivot and unfold outward
Implementation Method 5
The yo-yo has a flexible, resilient loop attached to the inner face of the wings to bias the wings to the closed dome configuration
Data Source
AI summary
The expanding and contracting yo-yo is a spool formed by a pair of disks connected by a narrow diameter pin having a string wound around the pin. At least one, and preferably both, of the disks has a plurality of overlapping wings (also referred to as air foils or leaves) pivotally attached to the periphery of the outer face of the disk. A biasing member causes the wings to remain in a closed dome configuration until the disks begin to spin. When the yo-yo is dropped and pulled back in, centrifugal force, centripetal force, alternate lift and drag of air flow, and resilient bias cause the wings to alternately pivot and unfold outward, followed by pivoting inward to a dome shape. In an alternative embodiment, the wings may be formed with a resilient living hinge that permits the wings to expand and contract against the body of the yo-yo.