Vibration Generation Device Frequency Separation
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Solution Overview
Problem
Existing vibration generating devices struggle to effectively separate sound and vibration, making it difficult to present them distinctly.
Innovation Solution
A vibration generating device is designed with a housing, diaphragm, and a vibration providing part that vibrates the housing in two distinct frequencies, one for sound and another for vibration, allowing for separation of sound and vibration perception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single vibration source is used to generate both sound and vibration, then the device structure is simple, but sound and vibration cannot be sufficiently separated
Solution Approach 1:
The patent divides the vibration generation function into two separate vibration sources: a first vibration source that generates sound by vibrating in a first direction, and a second vibration source that generates vibration by vibrating in a second direction orthogonal to the first direction. This segmentation allows sound and vibration to be independently controlled and sufficiently separated, resolving the contradiction between structural simplicity and separation effectiveness.
2Ease of manufacture
If using separate vibration sources for sound and vibration, then sound and vibration are sufficiently separated, but the device structure becomes more complex
Solution Approach 1:
The patent utilizes orthogonal directions for the two vibration sources: the first vibration source vibrates in a first direction to generate sound, while the second vibration source vibrates in a second direction orthogonal to the first direction to generate vibration. By introducing dimensional separation (orthogonal directions), the patent achieves effective sound-vibration separation while managing structural complexity through spatial arrangement.
3Ease of manufacture
If vibrating the housing in the first direction at first frequency and in the second direction at second frequency, then sound and vibration are separated, but the control complexity increases
Solution Approach 1:
The patent employs periodic vibration actions at different frequencies: the first vibration source vibrates at a first frequency to generate sound, while the second vibration source vibrates at a second frequency to generate vibration. By using distinct periodic frequencies for each function, the patent achieves temporal separation of sound and vibration perception, reducing the need for complex real-time control while maintaining effective separation.
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 successfully separates sound and vibration, enabling sound to be perceived without feeling the vibration and vice versa by utilizing specific frequency ranges for each.
Implementation Method 1
a voice coil, and a magnetic drive part including a permanent magnet and a yoke, the voice coil being disposed in the gap formed between the central permanent magnet and the hub
Implementation Method 2
a vibration providing part attached to the housing, and configured to vibrate the housing, wherein the vibration providing part vibrates the housing in the first direction at a first frequency, and vibrates the housing in a second direction at a second frequency lower than the first frequency
Data Source
Figure 1A
Figure 1B
Figure 1C
AI summary
A vibration generating device includes a housing; a diaphragm supported by the housing, and configured to generate sound by vibrating in a first direction; and a vibration providing part attached to the housing, and configured to vibrate the housing. The vibration providing part vibrates the housing in the first direction at a first frequency, and vibrates the housing in a second direction at a second frequency lower than the first frequency.