Massage Device Linear Actuator Vibration Control
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Solution Overview
Problem
Existing massage devices for sexual stimulation generate vibrations with high frequency and low amplitude, often producing annoying noise and providing a limited massage effect, as they typically vibrate orthogonally to the housing axis rather than parallel to it.
Innovation Solution
A massage device with a ferromagnetic core and electromechanical means that generate vibrations parallel to the housing axis, utilizing a mass ratio of 1:100 to 1:3 and frequencies between 0.1 to 50 Hz, allowing for substantial amplitude and silent operation, with adjustable frequency and amplitude control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If an electric motor with an unbalanced mass is used to generate vibrations, then vibrations are produced, but the vibrations have high frequency and low amplitude and produce annoying noise
Solution Approach 1:
The patent replaces the conventional electric motor with an electromechanical linear actuator consisting of a coil element and ferromagnetic core. This substitution eliminates the rotating unbalanced mass mechanism that generates high-frequency vibrations and noise, while producing low-frequency, high-amplitude vibrations parallel to the housing axis through electromagnetic force generation.
2Ease of operation
If the shaft of the electric motor is arranged parallel to the housing axis, then the motor can rotate, but the vibrations extend orthogonal to the longitudinal extension of the housing
Solution Approach 1:
Instead of arranging the motor shaft parallel to the housing axis to enable rotation, the patent inverts the approach by using a linear electromechanical actuator where the ferromagnetic core moves parallel to the housing axis. This inversion directly produces vibrations in the desired longitudinal direction without the need for rotational conversion, eliminating the orthogonal vibration problem.
3Productivity
If loudspeaker elements are used to generate vibrations, then vibrations are produced, but the vibrations have high frequency with minimum amplitude in the direction of the cylinder axis
Solution Approach 1:
The patent changes the operating parameters by using an electromechanical linear actuator that operates at low frequencies (0.1 to 50 Hz) rather than the high frequencies typical of loudspeakers. This parameter change enables the system to generate high amplitude vibrations parallel to the housing axis, which are more effective for massage purposes.
4Productivity
If only a front end of the housing is set into vibrations, then vibrations are generated, but the complete housing does not vibrate and the massage effect is limited
Solution Approach 1:
The patent merges the vibration generation function with the housing structure itself. The electromechanical linear actuator is integrated within the housing, and its ferromagnetic core directly drives the housing to vibrate as a whole unit. This integration ensures that the entire housing participates in the vibration motion, maximizing the massage effect without requiring complex multi-component vibration systems.
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 device achieves natural-like massage movements with high amplitude vibrations parallel to the housing axis, reducing noise and enhancing the massage effect, allowing for varied and effective stimulation.
Implementation Method 1
the means for generating mechanical vibrations comprise at least one coil element and at least one ferromagnetic core arranged parallel or coaxial with the coil element
Implementation Method 2
electromechanical means arranged in the housing for generating mechanical vibrations
Data Source
AI summary
The invention relates to a massage device having a device housing, an electromechanical arrangement arranged in the device housing for generating mechanical vibrations, an electronic controller for controlling the electromechanical arrangement, and a power source, connected to the electromechanical arrangement and the electronic controller. the electromechanical arrangement includes at least one coil element and at least one ferromagnetic core arranged parallel or coaxial with the coil element and a cylindrical member, wherein the at least one coil element surrounds the cylindrical member such that the at least one ferromagnetic core is coaxially guided through the cylindrical member, wherein the core has a mass m1, the mass ratio m1:m2 where m2 represents a total mass m2 of the massage device, and the mass ratio is in the range from 1:100 to 1:3. In operation, the massage device as a whole vibrates in a direction substantially parallel to a cylinder axis of the cylindrical member.