Wrist Exerciser Rotation Mechanism With Electromagnetic Drive
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Solution Overview
Problem
Conventional wrist exercisers are difficult for general users to activate effectively, often requiring excessive force or resulting in unwanted speed boosts, and are prone to noise and loss due to separate activation mechanisms.
Innovation Solution
A wrist exerciser with a rotation mechanism that includes a sleeve ring, spinning mass, and a driving assembly, where the stator and rotor convert electrical energy into mechanical energy, allowing the spinning mass to be activated easily by an induced magnetic field, eliminating the need for separate activation means and reducing noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional activation means (string, rack, or battery-driven device) are used to activate the wrist exerciser, then the spinning mass can be activated, but it is difficult for general users to obtain suitable spinning speed (either too weak to activate or too hard causing unwanted speed boost)
Solution Approach 1:
The patent replaces the conventional mechanical activation system (string or rack) with an electromagnetic driving assembly comprising a stator and rotor. The stator generates a rotating magnetic field that induces current in the rotor, causing it to rotate and drive the spinning mass. This substitution eliminates the need for manual pulling actions and provides controlled, consistent activation force that prevents unwanted speed boosts while remaining easy for general users to operate.
2Ease of operation
If separate activation means (string, rack) are used, then the wrist exerciser can be activated, but these means are easily lost items for users
Solution Approach 1:
The patent merges the activation function directly into the wrist exerciser body by integrating the driving assembly (stator and rotor) within the device structure. The stator is fixed to the inner wall of the spherical casing while the rotor is mounted on the spinning mass, creating a unified integrated system. This eliminates separate activation means like strings or racks that could be lost, as the activation mechanism is now an inherent part of the device that cannot be separated or misplaced.
3Loss of substance
If activation means are employed inside the wrist exerciser, then loss of activation means is prevented, but this results in too much noise during spinning
Solution Approach 1:
The patent replaces mechanical activation components that generate noise (such as gears, belts, or direct mechanical connections) with an electromagnetic driving assembly. The stator generates a magnetic field that induces rotation in the rotor through electromagnetic induction, eliminating mechanical friction, gear engagement noise, and belt slapping sounds. This electromagnetic actuation method provides quiet operation while maintaining the integrated design that prevents loss of activation means.
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 solution provides an easy-to-use wrist exerciser for both professionals and beginners, ensuring consistent and controlled spinning speeds without excessive force or noise, and preventing loss of activation components.
Implementation Method 1
the stator and the rotor of the driving assembly are respectively mounted on the sleeve ring and the spinning mass, such that the spinning mass can be activated as the induced magnetic field causes the rotor begins to rotate
Data Source
AI summary
A rotation mechanism of a wrist exerciser is provided. The rotation mechanism includes a sleeve ring, a spinning mass, and a driving assembly. The sleeve ring is rotatable along an annular groove. The sleeve ring includes an annular body and a mount component. The annular body has a first mount portion and a first insertion hole respectively located at two opposite sides of the annular body. The mount component has a second mount portion and a second insertion hole. The second mount portion of the mount component is engaged with the first mount portion. Two shaft portions of the spinning mass are respectively and rotatably located in the first insertion hole and the second insertion hole, allowing the spinning mass to be rotatable. The driving assembly includes a stator fixed to the mount component and a rotor mounted on the spinning mass.