Integral Swing-Unit Vibrator Structure for High Force in Small Space
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Solution Overview
Problem
Existing vibration generators face challenges in increasing vibration force relative to size due to the need for a large space for deformation of plate springs, complex assembly processes, and high variability in performance.
Innovation Solution
A vibration generator with a frame, swing unit, and elastic member integrally molded together, where the swing unit is movable within the frame, and a coil is used to excite the swing unit for reciprocatory motion, allowing for a compact and accurately assembled design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a plate spring is used to hold the magnet in a linear motor, then the magnet can be moved by elastic deformation, but a relatively large space is required for the plate spring to deform
Solution Approach 1:
The frame, swing unit, and elastic member are integrally molded as a single piece, eliminating the need for separate plate springs and reducing the space required for elastic deformation. This integration allows the elastic member to be optimally positioned within the compact structure while maintaining vibration force.
Solution Approach 2:
The swing unit is designed to swing reciprocally within the frame, utilizing the elastic deformation of the integrated elastic member to achieve motion. This dynamic design allows for efficient use of space while maintaining the necessary elastic response for vibration generation.
2Ease of manufacture
If the magnet, plate spring, and frame unit are assembled as separate members, then flexibility in manufacturing is improved, but the number of assembly steps increases and assembly accuracy becomes difficult to ensure
Solution Approach 1:
The frame, swing unit, and elastic member are integrally molded as a single component, eliminating multiple assembly steps and ensuring precise relative positioning of all parts. This integral structure guarantees consistent assembly accuracy while maintaining ease of manufacture through mold-based production.
Solution Approach 2:
While the main structure is integrally molded, the magnet remains a separate component that can be independently manufactured and then precisely positioned within the molded structure. This selective segmentation maintains manufacturing flexibility for the magnet while ensuring precision through the integral mold structure.
3Force
If the size of the vibration generator is increased to increase vibration amount, then vibration force is improved, but the portability and compactness are reduced
Solution Approach 1:
The integral molding of the frame, swing unit, and elastic member eliminates wasted space between separate components, allowing the vibration generator to achieve maximum vibration force within a compact volume. This integration enables higher vibration amount per unit volume.
Solution Approach 2:
The swing unit is designed to move reciprocally within the confined space of the frame, utilizing three-dimensional space efficiently. This allows for adequate swing amplitude and vibration force generation without increasing the external dimensions of the vibration generator.
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 enables easy and accurate assembly, reduces manufacturing complexity, and achieves a large vibration force while maintaining a small size, with improved reliability and durability.
Implementation Method 1
a coil disposed so as to face toward the swing unit of the vibrator, wherein the swing unit moves with respect to the frame according to excitation of the coil
Implementation Method 2
an elastic member connecting the swing unit and the frame, wherein the swing unit is movable with respect to the frame while deforming the elastic member
Data Source
AI summary
A vibrator includes a frame, a swing unit, and an elastic member. The swing unit is disposed within the frame and holds a magnet. The elastic member connects the swing unit and the frame. The swing unit is movable with respect to the frame while deforming the elastic member. The frame, the swing unit, and the elastic member are integrally molded with each other.