Polyhedral Vibration Casing with Reinforcement for Haptic Feedback
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Solution Overview
Problem
Conventional vibration generating devices face challenges in providing vibrations with lower frequency and more weightiness, leading to insufficient casing strength when the vibrating body is increased in size.
Innovation Solution
A vibration generating device with a polyhedral casing structure featuring a reinforcement portion formed by an extension portion fitting into a gap portion, enhancing the casing's strength and assembly properties, while allowing for larger vibrating bodies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the vibrating body is increased in size to provide vibrations with lower frequency and more weightiness, then the vibration quality is improved, but the casing strength becomes insufficient
Solution Approach 1:
The casing is divided into multiple surfaces (first surface, second surface, third surface, fourth surface) with each surface containing specific structural features (gap portions, extension portions, reinforcement portions). This segmentation allows the casing to be optimized for both strength and vibration performance without requiring a complete redesign of the entire structure.
Solution Approach 2:
Reinforcement portions are strategically placed at specific locations where the extension portions fit into the gap portions. This local reinforcement approach strengthens the casing precisely where needed to support larger vibrating bodies, rather than uniformly increasing the entire casing structure.
2Strength
If the casing structure is modified to increase strength, then the casing strength is improved, but the assembly complexity increases
Solution Approach 1:
The extension portions and gap portions are integrated into the casing surfaces during the casing formation process, rather than being added as separate components. The reinforcement portions are formed as integral parts of the casing structure, combining multiple functions (structural support, assembly feature, reinforcement) into a unified design that reduces assembly steps.
3Power
If the vibrating body size is increased for better vibration performance, then the vibration quality is improved, but the device size increases
Solution Approach 1:
The casing utilizes three-dimensional spatial arrangement with extension portions extending from one surface and fitting into gap portions on another surface. This dimensional approach allows the casing to enclose a larger vibrating body while maintaining a compact overall device footprint through efficient space utilization.
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 reinforcement portion increases the casing's strength and ease of assembly, enabling stable vibration generation suitable for haptic feedback in game machines and portable information terminals.
Implementation Method 1
an electromagnet including a coil and a magnetic core around which the coil is wound; a permanent magnet; The vibration generating device generates a vibration by relatively moving the electromagnet and the permanent magnet by energizing the coil
Data Source
AI summary
A vibration generating device includes an electromagnet including a coil and a magnetic core around which the coil is wound; a permanent magnet; a casing to which the electromagnet or the permanent magnet is fixed; and an elastic body in which the electromagnet or the permanent magnet is held. The vibration generating device generates a vibration by relatively moving the electromagnet and the permanent magnet by energizing the coil. The casing has a polyhedral structure made of a plate material, and includes a first surface in which a gap portion is provided and another surface in which an extension portion is provided. The vibration generating device further includes a reinforcement portion that is formed by the extension portion extending from the another surface toward the first surface, thereby being fitted into the gap portion and flush with the first surface.