Contour-Mode Resonator Through-Hole Layout for Vibration Confinement
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Solution Overview
Problem
Existing resonance devices with cavities in the base surrounding the vibrating plate face increased dimensions, which hinder the improvement of resonator characteristics.
Innovation Solution
A resonator design featuring a vibrating section that vibrates in contour mode, surrounded by a frame with a through hole extending perpendicular to the supporting section, where the length of the through hole in one direction is longer than the coupling section in another direction, effectively confining vibration and maintaining device dimensions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a cavity is disposed in the base surrounding the vibrating plate to improve vibration confinement, then resonator characteristics are improved, but the dimensions of the device increase
Solution Approach 1:
The invention moves the cavity from the base (horizontal dimension) to the vibrating section itself (vertical/thickness dimension). The through-hole penetrates the vibrating section in the thickness direction, creating a vertical cavity structure instead of a horizontal base cavity. This dimensional change allows vibration confinement without increasing the planar dimensions of the device.
Solution Approach 2:
The cavity (through-hole) is nested within the vibrating section rather than being separate in the base. The coupling section is positioned within the through-hole space, effectively nesting the coupling mechanism inside the cavity structure. This nested arrangement eliminates the need for additional base cavity space while maintaining vibration confinement functionality.
2Reliability
If a cavity is added to the base to confine vibration, then vibration confinement is improved, but the structural complexity increases
Solution Approach 1:
The invention merges the cavity function with the vibrating section structure. The through-hole is formed directly in the vibrating section, combining the vibration element and cavity into a single integrated component. The coupling section is positioned within the through-hole, merging the coupling function with the cavity structure. This eliminates separate base cavity and coupling mechanisms, reducing overall structural complexity.
Solution Approach 2:
The vibrating section serves multiple functions: it provides the primary vibration function, contains the through-hole cavity for vibration confinement, and houses the coupling section for mechanical coupling. This multi-functional design eliminates the need for separate base cavity structures and reduces the number of components required for vibration confinement.
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 design enhances resonator characteristics while preventing an increase in dimensions, improving vibration confinement and efficiency.
Implementation Method 1
the length between the portion of the flexure-vibration member connected to the second end portion of the support member and the fixed end of the flexure-vibration member is λ/4, where λ is the wavelength of the flexure vibration
Implementation Method 2
a flexure-vibration member is disposed such that both ends of the flexure-vibration member are continuous with the remaining portion of the base member
Data Source
AI summary
A resonator is provided that includes a vibrating section that vibrates in a contour vibration mode, a frame that surrounds at least a portion of the vibrating section, supporting sections extending along a Y-axis direction and connecting the vibrating section and the frame. The vibrating section includes a through hole that extends along an X-axis direction perpendicular to the Y-axis direction such that a coupling section is disposed between the through hole and each of the supporting sections. The length SL of the through hole in the X-axis direction is longer than the length Sd of the coupling section in the Y-axis direction.