Three-Handle Loop String Toy With Swivel Joints
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Solution Overview
Problem
Existing skill toys with strings or ropes lack the variety of motions and maneuvers due to their simple geometries, limiting the range of possible play and interaction.
Innovation Solution
A toy design featuring three handles on a looped string or sheet of fabric, where each handle has a grip section and a swivel mechanism allowing it to rotate relative to the string or fabric, enabling a wider range of motions and maneuvers by displacing the center of mass and reducing tangling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If simple geometries are used for string toys, then the structure is simple and easy to manufacture, but the variety of motions and maneuvers is limited
Solution Approach 1:
The toy is divided into three separate handles instead of using a single continuous structure. Each handle can be independently manipulated, allowing for diverse motion patterns and maneuvers that cannot be achieved with simple continuous geometries.
Solution Approach 2:
The handles are positioned at different locations along the looped string, creating a three-dimensional configuration that enables motions in multiple planes and directions, significantly expanding the range of possible maneuvers compared to simple planar geometries.
2Adaptability or versatility
If handles are fixed directly to the string, then the structure is simple, but tangling occurs and motions are restricted
Solution Approach 1:
The swivel mechanism allows each handle to dynamically rotate and adjust its orientation relative to the string. This dynamic capability enables the handles to adapt to different motion patterns and reduces tangling by allowing the string to freely rotate around the swivel points during manipulation.
Solution Approach 2:
The swivel acts as an intermediary element between the handle and the string. It mediates the interaction by allowing rotational movement, which prevents the string from becoming tangled while still maintaining a secure connection, thus expanding the range of possible motions.
3Adaptability or versatility
If masses are concentrated at single points, then the center of mass is fixed, but the variety of orbital motions is limited
Solution Approach 1:
The mass is segmented into three separate handles distributed around the looped string rather than concentrated at a single point. This segmentation creates multiple centers of mass that can independently orbit, enabling complex orbital motions and maneuvers that are impossible with a single concentrated mass.
Solution Approach 2:
The distributed mass configuration at three separate handles creates a three-dimensional mass distribution that enables orbital motions in multiple planes and directions, significantly expanding the variety of possible orbital maneuvers compared to single-point mass concentrations.
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 toy allows for a vast array of new motions and maneuvers, including horizontal and vertical orbits, bouncing, and poi-type moves, enhancing playability and reducing string tangling through the use of swivel mechanisms and mass distribution.
Implementation Method 1
a swivel connecting the eyelet to the grip section and allowing the grip section to swivel relative to the eyelet
Data Source
AI summary
A toy having a looped string and three handles, each of the handles having a grip section, an eyelet through which the string passes, and a swivel between the eyelet and the grip section. The swivels allow the eyelets to rotate relative to the grip sections so that a handle can be held at the grip section and one or both of the other handles can be rotated without resulting in tangling of the string about the eyelet of the held handle. The grip sections are considerably larger and more massive than the eyelets so that the centers of mass of the handles are generally displaced from the string. In an alternate embodiment a pivot is included between each grip section and associated eyelet. A wide variety of motions and maneuvers can be performed by swinging one or more of the handles while holding or releasing one or more of the handles and/or holding or releasing one or more sections of the string. Another alternate embodiment is a triangular sheet of fabric with handles rotatably attached at each corner by swivels.