Vibration Actuator Elastic Support for Stable Damping Output
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Solution Overview
Problem
Conventional vibration actuators experience positional deviations of damping parts due to deformation of plate-like elastic bodies, leading to variations in vibration damping and performance stability.
Innovation Solution
A vibration actuator design featuring a movable body with a magnet and elastic supporting parts that include a deformation arm portion, allowing for stable vibration generation even with damping, by maintaining consistent damping part positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a damping part is attached to the plate-like elastic body to suppress vibration, then vibration damping is improved, but positional deviation of the damping part occurs due to deformation of the elastic body, causing variations in damping performance
Solution Approach 1:
A position adjustment protrusion is introduced as an intermediary element between the damping part and the elastic body. This protrusion includes a movable portion that can adjust the position of the damping part, compensating for deformations of the elastic body during vibration. The intermediary structure allows the damping part to maintain its optimal position despite the dynamic changes in the elastic body's shape.
Solution Approach 2:
The position adjustment protrusion is designed with a movable portion that can dynamically adjust its position in response to elastic body deformation. This dynamic adjustment mechanism ensures that the damping part remains at the correct position throughout the vibration cycle, adapting to the changing geometry of the elastic body rather than being fixed to a static position.
2Power
If the movable body vibrates with large amplitude and long duration, then vibration output is improved, but positional deviation of the damping part increases, causing unstable vibration performance
Solution Approach 1:
The position adjustment protrusion acts as a feedback mechanism that continuously monitors and compensates for positional deviations of the damping part. As the elastic body deforms during high-amplitude, long-duration vibration, the movable portion of the protrusion adjusts the damping part's position in real-time, providing negative feedback that maintains stable vibration performance despite large movements.
Solution Approach 2:
The dynamic position adjustment capability allows the system to maintain stable damping performance even during large-amplitude, long-duration vibration. The movable portion of the position adjustment protrusion adapts to the extended range of motion, ensuring the damping part remains effectively positioned throughout the entire vibration cycle.
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 enables the generation of suitable vibrations with stable high output, even when damped, by minimizing positional deviations of damping parts and maintaining consistent vibration performance.
Implementation Method 1
cooperation between the coil supplied with electricity and the magnet causes the movable body to vibrate with respect to the fixing body
Implementation Method 2
a deformation arm portion disposed between the outer circumferential portion and the inner circumferential portion, the deformation arm portion being configured to couple together the outer circumferential portion and the inner circumferential portion, the deformation arm portion being elastically deformable
Implementation Method 3
a damping part for damping a vibration of the elastic supporting part during movement of the movable body
Data Source
AI summary
This vibration actuator comprises a fixed body including a coil, a movable body including a magnet, and an elastic support part that supports the movable body so as to be freely moveable with respect to the fixed body. The elastic support part has an outer circumferential part fixed to the fixed body, an inner circumferential part disposed inside in the radial direction of the outer circumferential part and fixed to the movable body, and a deforming arm part disposed between the outer circumferential part and the inner circumferential part and coupling the outer circumferential part and the inner circumferential part, the deforming arm part being elastically deformable. An attenuation part is provided across the outer circumferential part and a portion of the deforming arm part on an outer circumferential part side thereof, the attenuation part attenuating vibrations in the elastic support part when the movable body moves.