Multi-Directional Vibration Generator Using Segmented Magnetic Coils
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Solution Overview
Problem
Conventional vibration generators face challenges in achieving sufficient vibration in the transverse direction due to size reduction, leading to weak thrust forces and inadequate vibration performance.
Innovation Solution
A vibration generator design featuring a housing with a vibrating body that includes two electromagnets arranged in the transverse direction, supported by an elastic support and driven by a magnetic drive with multiple magnetic field generators, allowing for efficient vibration in both vertical and transverse directions while maintaining a thin profile.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If the size of the vibration generator is reduced in the longitudinal direction to achieve a thinner profile, then the device thickness is reduced, but the longitudinal length of the coil becomes short, resulting in weak thrust force in the transverse direction
Solution Approach 1:
The single coil structure is segmented into multiple coils (first coil and second coil) arranged in the transverse direction. Each coil generates magnetic force independently, and their combined effect produces sufficient transverse thrust force even when each individual coil has reduced length due to the thinner housing profile.
Solution Approach 2:
The patent transitions from a single-direction (longitudinal) coil arrangement to a multi-directional arrangement by placing coils in the transverse direction. This dimensional change allows the system to generate adequate thrust force perpendicular to the housing thickness direction, compensating for the reduced coil length in the longitudinal direction.
2Volume of moving object
If the coil length is reduced due to size reduction, then the device becomes more compact, but the thrust force becomes weak, leading to insufficient vibration performance
Solution Approach 1:
The vibration generation function is segmented across multiple coils rather than relying on a single long coil. By distributing the magnetic force generation across several shorter coils arranged in the transverse direction, the system maintains compact size while achieving sufficient total thrust force for adequate vibration performance.
Solution Approach 2:
Multiple coils are merged in their functional contribution to thrust force generation. Although each individual coil is short, their combined magnetic forces add up to produce the necessary total thrust force, maintaining vibration performance despite reduced individual coil lengths.
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 design achieves a sufficient vibration in both vertical and transverse directions, compensating for size reduction effects and ensuring robust vibration performance with a compact form factor.
Implementation Method 1
supplying an alternating current to an electromagnet provided in the vibrating body, generating an alternating magnetic field around the electromagnet
Implementation Method 2
alternately generating an attractive force and a repulsive force between the electromagnet and the permanent magnet
Implementation Method 3
an elastic support supporting the vibrating body such that the vibrating body can vibrate along a first direction and a second direction intersecting each other
Data Source
AI summary
A vibration generator includes a housing, a vibrating body accommodated in the housing, an elastic support supporting the vibrating body such that the vibrating body can vibrate along a first direction and a second direction intersecting each other, and a magnetic drive configured to drive the vibrating body along the first direction and the second direction using a magnetic force, and wherein the magnetic drive includes a plurality of first magnetic field generators disposed side by side at a predetermined interval in the vibrating body in the first direction or the second direction, and a plurality of second magnetic field generators disposed on positions facing both ends of each of the plurality of first magnetic field generators in the housing, and wherein a longitudinal direction of the housing is in a third direction intersecting the first direction and the second direction.