Personal Cleaning Driver Using Magnetic Resonance to Eliminate Bearings
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Solution Overview
Problem
Existing personal cleaning care appliances face challenges with complex structures, high costs, noise, damping, and reliability issues due to bearing-based driver configurations, which lead to inefficient energy transfer and increased noise.
Innovation Solution
A personal cleaning care appliance design featuring a transducer with a drive shaft, elastic elements, and independent permanent magnets arranged to minimize magnetic field interference, allowing for smooth rotation and resonance oscillation, eliminating the need for restraining pieces like bearings, thus achieving a compact, low-noise, and efficient structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If bearing-based driver configurations are used, then the driver can support rotation, but the structure becomes complex and costly
Solution Approach 1:
The patent removes the bearing component from the driver configuration. Instead of using bearings to support rotation, the invention employs a magnetic field-based driving mechanism where the cleaning head rotates without traditional mechanical supports, thereby simplifying the overall structure while maintaining rotational support capability
Solution Approach 2:
The patent replaces the mechanical bearing-based support system with a magnetic field-based driving and support system. The electromagnetic driver generates magnetic fields that both drive and support the rotation of the cleaning head, eliminating the need for mechanical bearings and reducing structural complexity
2Reliability
If bearing-based driver configurations are used, then the driver can support rotation, but noise and damping increase
Solution Approach 1:
The patent replaces mechanical bearing-based rotation support with an electromagnetic field-based system. The electromagnetic driver uses magnetic fields to drive and support the cleaning head rotation, eliminating mechanical contact and friction that generate noise, thereby reducing noise and damping while maintaining rotational support
3Ease of operation
If traditional motion conversion assemblies are used, then reciprocating motion can be converted to rotary motion, but the structure becomes complicated
Solution Approach 1:
The patent removes the traditional motion conversion assembly from the driver configuration. Instead of using separate mechanisms to convert reciprocating motion to rotary motion, the invention integrates the motion conversion function directly into the electromagnetic driver, which generates rotational motion directly, thereby simplifying the structure while maintaining the motion conversion function
Solution Approach 2:
The patent merges the motion conversion function with the electromagnetic driving function into a single integrated system. The electromagnetic driver simultaneously performs the functions of generating reciprocating motion, converting it to rotary motion, and driving the cleaning head, eliminating the need for separate motion conversion assemblies and reducing structural complexity
4Stability of the object's composition
If permanent magnets are fixedly mounted, then magnetic field stability is improved, but the structure becomes rigid and noisy
Solution Approach 1:
The patent transitions from fixedly mounting permanent magnets to a dynamic configuration where permanent magnets are mounted on movable components that can adjust their positions. This dynamic arrangement allows the magnetic field to remain stable during operation while reducing rigidity and noise through controlled movement and vibration absorption
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 results in a compact, cost-effective, and reliable personal cleaning care appliance with smooth rotation and reduced noise, enhancing energy transfer efficiency and extending the appliance's service life.
Implementation Method 1
a driver for converting input electrical energy into output mechanical energy, wherein the driver comprises a transducer, a drive coil, a drive coil iron core arranged in the drive coil
Implementation Method 2
the motion conversion assembly converts the driving action of the drive assembly into a twisting or rotating action of the drive shaft through the provision of a leaf spring
Implementation Method 3
at least two permanent magnets disposed on left and right sides with respect to a longitudinal axis of the drive shaft
Implementation Method 4
a method for adjusting the elastic elements of a resonant driving system, wherein the spring elements are not curved, and their resonant frequency is changed by sufficiently altering the stiffness of the elastic elements so that the resonant vibration frequency is very close to the driving frequency of the appliance
Data Source
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AI summary
Provided is an implement for personal cleaning and care; a driver (110) of said implement comprises a transducer (130), a driving coil (114), a driving coil core (115), and a driver frame (112, 113). The transducer comprises a drive shaft (111), a transducer resilient-member fixing member (124), permanent magnets (116, 117) arranged on the left and right sides of the longitudinal axis of the drive shaft, permanent magnet frames (118, 119) fixedly connecting the permanent magnets, transducer actuator arms (125, 126), and transducer resilient members (122, 123). The permanent magnets (116, 117) are independent of each other; the polarity of the magnetic pole of the permanent magnet of one side and in the direction facing the driving coil (114), is S or N, and the permanent magnet of the other side has in the direction facing the driving coil (114) a polarity opposite to the polarity of the permanent magnet of said first side; the angle between the direction of the magnetic lines of force inside the permanent magnets (116, 117) and the direction of the longitudinal axis of the driving coil core (115) is greater than 45° and smaller than 135°; the permanent magnets (116, 117) may move with respect to the transducer resilient-member fixing member (124). When the current of the driving coil (114) is alternating current having a frequency of f0, the direction of movement of the permanent magnets (116, 117) is approximately parallel to the direction of the longitudinal axis of the driving coil core (115), and the angle between the two is greater than 170° and smaller than 190°. The present cleaning and care implement has a simple and compact structure and is low in cost, easy to assemble and steady in rotation; it has low damping and is safe and reliable.