Rotation Exercising Ball with Hall Sensor Feedback and Segmented Mounting
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Solution Overview
Problem
Conventional rotation exercising structures face issues such as weakened shell connections leading to deformation or breakage, bearing dislodgment, and lack of feedback on exercise metrics like time interval and calorie consumption.
Innovation Solution
A rotation exercising ball structure comprising two shells, pivot seats, holding members, a weight unit with a mandrel and magnets, and a PCB connected via a Bluetooth device for real-time data transmission, enhancing structural integrity and providing exercise metrics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If bearings are mounted in mounting recesses to enable rotation, then the rotation function is achieved, but the mounting recesses are easily cracked or broken after prolonged use causing bearing dislodgment
Solution Approach 1:
The patent divides the mounting structure into separate components: the mounting recess in the shell and a独立的 bearing mounting plate. The bearing is mounted on the plate rather than directly in the recess, separating the rotational function from the structural support function. This segmentation prevents stress concentration in the recess while maintaining bearing retention.
Solution Approach 2:
The patent introduces a bearing mounting plate as an intermediary component between the mounting recess and the bearing. This plate acts as a mediator that distributes the mechanical stress and provides a stable mounting surface for the bearing, preventing direct stress concentration on the recess walls and eliminating the cracking issue.
2Ease of manufacture
If the main body is formed by two shells juxtaposed together, then assembly and disassembly are facilitated, but the connection between shells has weakened strength causing deformation or breakage
Solution Approach 1:
The patent employs composite construction by combining multiple materials: the shells are made of a first material, the mounting plate of a second material, and the bearing of a third material. This composite approach allows each component to be optimized for its specific function while collectively achieving both ease of assembly and high connection strength through proper material selection and interface design.
3Loss of information
If a simple rotation structure is used, then the device complexity is low, but no exercise information such as time interval or calorie consumption can be provided
Solution Approach 1:
The patent incorporates a feedback mechanism through a sensor that detects rotation parameters and a controller that processes this data to calculate exercise information such as time interval and calorie consumption. This feedback system provides real-time information to the user, transforming the simple rotation structure into an intelligent exercising device with data tracking capabilities.
Solution Approach 2:
The patent makes the rotation structure multi-functional by integrating it with measurement, calculation, and feedback functions. The same rotating mechanism that provides exercise also serves as the basis for measuring rotation parameters, calculating exercise metrics, and providing feedback, thereby achieving multiple functions without proportionally increasing 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 structure provides a stable and durable exercising experience with enhanced structural strength and real-time feedback on exercise data, preventing shell deformation and bearing dislodgment while offering improved user engagement through centrifugal force and data tracking.
Implementation Method 1
The Hall sensor detects rotation of the two magnets and sends information of rotation of the two magnets to the PCB
Implementation Method 2
The weight is rotatable in the hollow ball radially and centrifugally with the mandrel served as an axis... the weight is started and oscillated easily to produce a larger centrifugal force
Data Source
AI summary
A rotation exercising ball structure includes two shells, two pivot seats, two holding members, a weight unit, a first housing, a second housing, and a PCB (printed circuit board). The two shells are combined together to construct a hollow ball. The weight unit includes a mandrel pivotally connected with the hollow ball, two magnets secured to the mandrel, at least one rotation member connected with the mandrel, and a weight connected with the at least one rotation member. The PCB is electrically connected with a Bluetooth transmission device which is electrically connected with a Hall sensor. When the mandrel is rotated, the Hall sensor detects rotation of the magnets and sends information of rotation of the magnets to the PCB, and the PCB processes and transmits the information to the Bluetooth transmission device.