Juggling Club Inflatable Bellows Outer Shell Design
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Solution Overview
Problem
Modern juggling clubs with inflatable materials face issues with power transmission, weight distribution, and flight characteristics due to rotational momentum and uneven center of gravity, making them difficult to throw and catch effectively, especially on uneven surfaces.
Innovation Solution
A juggling club design featuring a flexible, inflatable bellows enclosed by a solid, foldable outer shell, which provides optimal weight distribution and center of gravity, allowing for improved throwing, flight, and bouncing capabilities, with the bellows adhering to the inside of the shell to maintain dimensional stability and the outer shell being made of hard-wearing materials for longevity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the club body is made of inflatable material, then the juggling club can bounce back, but the power transmission from hand to handle is compromised and flight characteristics deteriorate
Solution Approach 1:
The club body is segmented into two distinct parts: an inflatable bellows component (providing bouncing capability) and a rigid outer shell (providing structural integrity for power transmission). This segmentation allows each component to fulfill its specific function without compromising the other.
Solution Approach 2:
The club body combines two different material types: flexible inflatable material for the bellows and rigid material for the outer shell. This composite structure enables the club to simultaneously achieve bouncing properties and maintain structural rigidity for effective power transmission during throws.
2Ease of manufacture
If the valve is arranged on the outer wall of the club body, then inflation is possible, but weight distribution and center of gravity are adversely affected
Solution Approach 1:
The valve is nested within the central reinforcement element (rod) rather than being mounted on the outer wall. The rod passes through the club body, and the valve is positioned inside this central structure, allowing inflation while maintaining proper weight distribution and center of gravity.
3Object-affected harmful factors
If the outer shell is made of flexible material, then bouncing is enabled, but dimensional stability is compromised
Solution Approach 1:
Different parts of the club body have different material properties: the bellows portion is made of flexible inflatable material for bouncing, while the outer shell is made of rigid material for dimensional stability. Each local region has the quality appropriate for its specific function.
Solution Approach 2:
The club body uses a composite construction with flexible material for the inflatable bellows and rigid material for the outer shell, combining the benefits of both material types in a single structure.
4Ease of manufacture
If the club body is made from a single plastic body, then manufacturing is simplified, but bouncing capability is lost
Solution Approach 1:
The club body is segmented into the bellows component and the outer shell, allowing the inclusion of an inflatable element for bouncing capability while maintaining a relatively simple overall construction.
Solution Approach 2:
The bellows is constructed as a flexible, foldable structure that can be inflated to provide bouncing capability. This flexible component is then enclosed by the rigid outer shell to create the complete club body.
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 club achieves optimal throwing and flight properties while ensuring safe and easy bouncing on various surfaces, with the inflatable design allowing for airtight attachment and the outer shell being easily replaceable for cleaning and customization.
Implementation Method 1
the bellows in the inflated state adhering to the inside of the outer shell, bringing it into a dimensionally stable state and keeping it
Implementation Method 2
the club body consists of a flexible, elastically stretchable, inflatable and preformed bellows
Data Source
Figure 1
Figure 2~3
Figure 4~6
AI summary
A juggling club comprising a club body (1), a handle (2, 2'), and a central reinforcing element extending along the longitudinal axis of the juggling club through the handle (2, 2') and the club body (1), on which the handle (2, 2') and the club body (1) are arranged, as well as a top (7) at the tip of the club body (1) or at the upper end of the reinforcing element and a knob (9) at the free end of the handle (2, 2'). The club body (2) consists of a flexible, inflatable, and pre-shaped bellows (4) and a pressure- and shape-stable outer shell (5) enclosing it, wherein the bellows (4) conforms to the inner surface of the outer shell (5) when inflated.