S-Shaped Elastic Beam Vibration Generator With Low Mechanical Attenuation
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Solution Overview
Problem
Existing vibration generators face significant mechanical attenuation due to friction between elastic beam parts and support parts, leading to reduced power generating performance.
Innovation Solution
The vibration generator incorporates first and second integrated elastic support bodies with elastic beam parts and support parts formed integrally, preventing friction and allowing the vibrator to vibrate freely, thereby reducing mechanical attenuation and enhancing power generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If elastic beam parts and support parts are formed as separate components, then assembly and manufacturing are easier, but friction occurs between the parts causing mechanical attenuation
Solution Approach 1:
The elastic beam part and support part are integrated into a single piece structure, eliminating the interface between these components. This merging removes the friction source while the S-shaped design maintains the necessary elastic functionality for vibration support.
Solution Approach 2:
The integrated structure is designed with an S-shaped elastic beam portion that segments the load paths and deformation zones, allowing different regions to handle different mechanical functions while remaining part of a single continuous structure, thus avoiding friction at joints.
2Loss of energy
If elastic beam parts and support parts are formed integrally, then friction is eliminated reducing mechanical attenuation, but manufacturing complexity increases
Solution Approach 1:
The S-shaped elastic beam portion concentrates the structural complexity only where needed for elastic deformation, while other portions maintain simpler geometries for support and connection functions, optimizing the balance between functionality and manufacturability.
Solution Approach 2:
The elastic properties are optimized by adjusting the S-shaped geometry parameters (curvature radius, beam thickness, length ratios) to achieve the desired mechanical attenuation reduction while maintaining manufacturability through standard fabrication processes.
3Stability of the object's composition
If the vibrator is constrained by separate elastic beam and support parts, then structural stability is achieved, but friction reduces power generating performance
Solution Approach 1:
By merging the elastic beam and support parts into one integrated component, the friction interface is eliminated while the S-shaped design preserves the vibrational support functionality, directly improving power generation by reducing energy loss to friction.
Solution Approach 2:
The design converts the potential harm of friction into benefit by using the S-shaped geometry to provide elastic compliance without contact friction, transforming what would be a loss mechanism into an efficient vibration support system.
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 achieves low mechanical attenuation and high power generating performance by eliminating friction between the elastic beam parts and support parts, resulting in efficient energy harvesting from environmental vibrations.
Implementation Method 1
Each of the first and second integrated elastic support bodies includes an elastic beam part configured to undergo elastic deformation
Implementation Method 2
The coil is located inside the vibrator. The coil is sandwiched and supported between the first integrated elastic support body and the second integrated elastic support body
Data Source
AI summary
According to one embodiment, a vibration generator includes first and second integrated elastic support bodies, a vibrator, and a coil. Each of the first and second integrated elastic support bodies includes an elastic beam part configured to undergo elastic deformation, and a support part supporting the elastic beam part, the elastic beam part and support part being integrally formed. The vibrator includes a magnet and a magnetic material, and is interposed between the first and second integrated elastic support bodies and supported so as to vibrate. The coil is located inside the vibrator, and interposed and supported between the first integrated elastic support body and the second integrated elastic support body.