Driver Apparatus Vibration Reduction via Segmented Transducer and Drive Coil Assemblies
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Solution Overview
Problem
Electric cleaning appliances experience significant vibration during operation due to the high-speed reciprocating motion of cleaning elements, which can be uncomfortable for users and may lead to increased wear and tear on the handle housing.
Innovation Solution
The appliance incorporates a driver apparatus with a transducer assembly and a drive coil assembly, where the transducer and drive coil frames are separated and connected via structural features that allow for opposite torques to balance forces and moments, reducing vibration without adding new parts, by configuring existing components to achieve resonance and balance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the driver apparatus provides a high drive moment of force to achieve high-speed reciprocating motion of the cleaning element, then the cleaning element can maintain high-speed reciprocating motion under load, but the vibration on the handle housing increases significantly
Solution Approach 1:
The driver apparatus is segmented into two separate assemblies: the transducer assembly and the drive coil assembly. These assemblies are positioned at different locations within the handle housing and are independently mounted. This segmentation allows each assembly to generate opposing torques that balance each other, reducing the net vibration transmitted to the handle housing while maintaining the high-speed reciprocating motion of the cleaning element.
2Device complexity
If the transducer and drive coil are fastened on the housing by the driver left and right frames, then the driver apparatus can be compactly arranged, but the resultant moment generated upon operation acts on the housing causing vibration
Solution Approach 1:
The transducer assembly and drive coil assembly are positioned to function as counterbalancing components. When activated, they generate torques of opposite directions that act on the handle housing. By carefully positioning and sizing these assemblies, the harmful vibrations are counterbalanced, reducing the net vibration transmitted to the user while maintaining a compact overall structure.
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
This configuration effectively reduces vibration on the handle housing, providing a comfortable user experience while maintaining the high-speed reciprocating motion of the cleaning element, with advantages of low cost, simplicity, and small volume.
Implementation Method 1
When an alternating current with a frequency of f0 passes through the drive coil, an electromagnetic force generated between the permanent magnets and the drive coil with the alternating current at frequency f0 drives the transducer to resonate.
Implementation Method 2
The transducer comprises a transducer drive shaft inserted into a cleaning assembly, at least one transducer elastic member
Data Source
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AI summary
The invention relates to a fixing structure for use in a driver apparatus of an electric cleaning appliance. The driver apparatus is disposed within a handle housing and comprises a transducer assembly and a drive coil assembly. The transducer assembly comprises a transducer, a transducer frame and a transducer assembly fixing member. The drive coil assembly comprises a drive coil, a drive coil frame and a drive coil assembly fixing member. The transducer frame and the drive coil frame respectively comprise left and right frames disposed separate from each other. On the left and right frames of the drive coil are respectively arranged frame hollow areas which allow a transducer moving component to rotate back and forth without interference around the longitudinal axis of a transducer drive shaft in the drive coil assembly. The handle housing is respectively fastened with the transducer assembly or the drive coil assembly via a first or second structural feature part in a way that one cannot move relative to the other. The transducer assembly and the drive coil assembly are connected via a third structural feature part in a way that one can move relative to the other. The fixing structure of the invention may effectively reduce the vibration on the handle housing.