Piezoelectric Vibration Member Support Structure for Higher Displacement
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing vibration devices experience decreased displacement due to the base inhibiting the vibration member's movement, leading to reduced functionality.
Innovation Solution
A vibration device design where a protrusion on the vibration member contacts the base, allowing the vibration unit to be supported without fully covering the base, thereby preventing displacement inhibition and enhancing movement freedom.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the entire vibration member is supported on the base, then the vibration device is stable, but the base inhibits displacement of the vibration member
Solution Approach 1:
The support structure is segmented from the vibration member through the protrusion design. The protrusion creates a localized contact point that separates the support function from the vibration function, allowing the base to provide stability while minimizing interference with the vibration member's displacement capability.
Solution Approach 2:
The support function is extracted from the entire vibration member surface and concentrated at the protrusion. This extraction allows the majority of the vibration member to remain free from base contact, thereby maintaining displacement capability while still achieving stability through the protrusion's support.
2Volume of moving object
If the protrusion is positioned inside the piezoelectric element, then the structure is compact, but the displacement of the vibration device is reduced
Solution Approach 1:
The protrusion is positioned asymmetrically outside the piezoelectric element rather than at the center or inside it. This asymmetric positioning optimizes the balance between structural compactness and displacement capability, allowing the protrusion to provide support while leaving the piezoelectric element and its surrounding areas free to displace effectively.
Solution Approach 2:
The support function is moved to a different spatial dimension by positioning the protrusion outside the piezoelectric element's boundary. This dimensional repositioning allows the support structure to coexist with the vibration generation components without interfering with their primary function of displacement.
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 increases displacement and maintains the tactile sensation provided by the vibration device, ensuring effective operation and user feedback without base-induced inhibition.
Implementation Method 1
The vibration device includes a piezoelectric element and a vibration member. The piezoelectric element is disposed on the second main surface.
Implementation Method 2
The first main surface of the vibration member is provided with a protrusion contacting the base and defining a vibration space on the first main surface.
Data Source
AI summary
A vibration device includes a piezoelectric element and a vibration member. The vibration device is arranged to be supported on a base. The vibration member includes a first main surface opposing the base and a second main surface opposing the first main surface. The piezoelectric element is disposed on the second main surface. The first main surface of the vibration member is provided with a protrusion contacting the base and defining a vibration space on the first main surface. The protrusion is positioned outside the piezoelectric element to surround the piezoelectric element when the vibration member is seen through from a direction orthogonal to the first main surface.