Vibration-Type Driving Device Non-Overlapping Contact Regions
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Solution Overview
Problem
Vibration-type driving devices using multiple vibrators experience reduced operating life due to increased wear at contact regions, as the contact areas between the vibrators and driven object overlap, leading to uneven wear and premature failure.
Innovation Solution
The vibration-type driving device employs a configuration where the contact regions of the driven object with multiple vibrators are positioned to avoid overlap, utilizing a combination of vibrations in different modes to generate an elliptical motion, ensuring uniform wear and extended operating life by distributing the wear evenly across non-overlapping contact areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If multiple vibrators are used to ensure output, then the power and reliability are improved, but the wear at contact regions increases and operating life decreases
Solution Approach 1:
The patent divides the contact surface of the driven object into multiple distinct contact regions, each corresponding to a specific vibrator. By segmenting the contact areas so they do not overlap, the wear from multiple vibrators is distributed across separate regions rather than concentrating in overlapping zones, thereby extending operating life while maintaining the power output from multiple vibrators
Solution Approach 2:
The patent creates different local conditions at different contact regions by positioning them at specific locations where they do not overlap. Each contact region experiences wear from only one vibrator, creating locally optimized wear patterns that prevent excessive wear accumulation, thus improving operating life while preserving the combined power output
2Power
If multiple vibrators are used to ensure output, then the power is improved, but the contact regions overlap and wear increases substantially
Solution Approach 1:
The contact surface is segmented into distinct non-overlapping regions, with each region assigned to a specific vibrator. This segmentation ensures that material loss from wear is distributed across separate areas rather than accumulating in overlapping zones, reducing total wear loss while maintaining the power output from multiple vibrators
Solution Approach 2:
The patent positions contact regions in different spatial locations on the driven object surface, utilizing spatial dimensionality to separate the contact areas. By arranging contact regions at different positions rather than allowing overlap in the same area, the system reduces wear loss while preserving the power contribution from multiple vibrators
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 prevents excessive wear at specific contact regions, thereby extending the operating life of the vibration-type driving device by ensuring uniform wear patterns across all contact areas, even when using multiple vibrators.
Implementation Method 1
vibrations in different vibration modes (shapes) are combined
Implementation Method 2
contact portions perform an elliptical motion using a combination of vibrations in different vibration modes
Implementation Method 3
contact portions of the vibrators are to come into contact with a driven object
Implementation Method 4
contact portions perform an elliptical motion using a combination of vibrations in different vibration modes
Data Source
AI summary
A vibration-type driving device according to the present invention includes a plurality of vibrators in which contact portions perform an elliptical motion using a combination of vibrations in different vibration modes; and a driven object having contact regions that come into contact with the contact portions and move relative to the plurality of vibrators, wherein the contact regions for the individual vibrators differ in position so as not to overlap.