Rotation Exercising Ball with Bluetooth Feedback and Support Plate
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Solution Overview
Problem
Conventional rotation exercising structures face issues such as cracked or broken mounting recesses, weakened shell connections, lack of feedback on exercise metrics, resistance due to complex triangular structures, and increased assembly and production costs.
Innovation Solution
A rotation exercising ball structure comprising two shells, pivot seats, holding members, a weight unit with a mandrel, rotation member, and magnets, integrated with a Bluetooth transmission device and Hall sensor for real-time data transmission, and reinforced design elements for enhanced structural integrity and ease of assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If two bearings are mounted in two mounting recesses respectively, then the rotation structure can be constructed, but after the main body is rotated during a period of time, the two mounting recesses are easily cracked or broken
Solution Approach 1:
The patent removes the problematic mounting recesses from the shell structure entirely. Instead of embedding bearings in recesses of the shell, the design uses a separate support plate structure that carries the bearings, eliminating the stress concentration points that caused cracking and breaking in the original mounting recesses.
Solution Approach 2:
The patent introduces a support plate as an intermediary component between the shell and the bearings. This support plate absorbs and distributes the mechanical stresses, protecting the shell from direct stress concentration at bearing mounting locations, thereby preventing cracking and extending service life.
2Ease of manufacture
If the main body is formed by two shells juxtaposed to each other, then the structure can be assembled, but the connection between the two shells has weakened strength
Solution Approach 1:
The patent merges the support plate with one of the shell components to create a more integrated and stronger structure. This combination maintains the ease of assembly benefit while significantly improving the connection strength by creating a unified structural element rather than relying solely on the weak interface between two separate shells.
3Device complexity
If a T-shaped construction is defined between the mandrel and the rotation member, then the rotation mechanism can be formed, but the mandrel applies a larger resistance so that the user cannot swing the main body smoothly
Solution Approach 1:
The patent inverts the traditional T-shaped construction by changing the geometric configuration of the mandrel and rotation member interface. Instead of a T-shape that creates a triangular rigid structure with high resistance, the inverted design reduces the moment arm and contact area, thereby reducing the resistance force and enabling smoother swinging motion while maintaining the rotation mechanism functionality.
4Device complexity
If the two ends of the mandrel are disposed in the two shells, then the rotation structure can be constructed, but when the two shells are not assembled exactly, the two ends of the mandrel, the two bearings, and the two mounting recesses are not located at the same central line
Solution Approach 1:
The patent removes the mandrel ends from direct disposal in the shells, eliminating the alignment dependency between mandrel, bearings, and mounting recesses. By extracting the mandrel from this critical alignment relationship and using a different support structure, the design tolerates assembly variations without compromising rotational smoothness.
Solution Approach 2:
The support plate serves as an intermediary that decouples the alignment requirements between the mandrel, bearings, and shell assembly. This intermediary component absorbs misalignment errors, allowing the system to function smoothly even when shells are not assembled with perfect precision, thereby reducing the manufacturing precision requirements.
5Manufacturing precision
If the manufacturer has to assemble the two shells carefully to keep the two ends of the mandrel, the two bearings, and the two mounting recesses at the same central line, then the alignment can be maintained, but the time of assembly is prolonged
Solution Approach 1:
The patent extracts the alignment-critical components (mandrel ends and mounting recesses) from the shell assembly process. By removing these elements from the careful assembly requirement, the design allows for faster, less precise assembly while maintaining proper alignment of the rotational components through the support plate structure.
Solution Approach 2:
The support plate acts as an intermediary that compensates for assembly variations, eliminating the need for careful manual alignment during assembly. This intermediary structure provides self-aligning features or tolerance compensation, significantly reducing assembly time while maintaining the required precision of the rotational mechanism.
6Device complexity
If the conventional rotation structure has many parts with complicated procedures of assembly, then the structure can be constructed, but the cost of fabrication and production is increased
Solution Approach 1:
The patent merges multiple separate components into fewer integrated parts. By combining the support plate with shell components and integrating bearing mounting functions into unified structures, the design reduces the total number of parts and simplifies assembly procedures, thereby lowering fabrication and production costs while maintaining structural functionality.
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 structure provides a smooth exercising experience with reduced resistance, offers real-time feedback on exercise metrics via Bluetooth transmission, and is cost-effective with reduced assembly complexity and fewer parts, enhancing user convenience and durability.
Implementation Method 1
a Hall sensor, and two handle protecting members. The mandrel has two ends each of which extends through the through hole of one of the two pivot seats
Implementation Method 2
The rotation member and the weight are rotated in the hollow ball radially and centrifugally with the mandrel served as an axis
Data Source
Figure 1
Figure 2
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AI summary
A rotation exercising ball structure includes two shells (10) that are combined to construct a hollow ball (1). A mandrel (41) is mounted in the hollow ball. A rotation member (43) has a first end connected with the mandrel. A weight (44) is connected with a second end of the at least one rotation member. The weight and the rotation member are rotated in the hollow ball radially and centrifugally with the mandrel served as an axis. A first housing (51) is mounted in the hollow ball. A Bluetooth transmission device (53) is mounted in the first housing. A Hall sensor (54) is electrically connected with the Bluetooth transmission device. In practice, when the mandrel is rotated, the Hall sensor detects rotation of the mandrel and transmits an information to the Bluetooth transmission device.