Vibration Actuator With Plate-Shaped Elastic Support
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Solution Overview
Problem
Existing vibration actuators for mobile devices require complex configurations to achieve strong vibration, making them difficult to assemble and costly to produce.
Innovation Solution
A vibration actuator with a simple configuration featuring a movable body with a coil or magnet, supported by a plate-shaped elastic body that vibrates within a fixing body, allowing for easy assembly and effective vibration output.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a complex configuration is used to achieve strong vibration output, then vibration strength is improved, but device complexity and assembly difficulty increase
Solution Approach 1:
The actuator is divided into distinct functional modules: a movable body containing the magnet, a coil assembly, and a support structure. This segmentation allows each component to be optimized independently while simplifying assembly and maintenance, resolving the contradiction between achieving strong vibration output and reducing configuration complexity
Solution Approach 2:
The support structure serves multiple functions simultaneously: it provides mechanical support for the movable body, guides the vibration motion, and acts as a mounting interface for the coil assembly. This multi-functionality reduces the number of separate components needed, thereby simplifying the overall configuration while maintaining strong vibration output capability
2Power
If a complex configuration is used to achieve strong vibration output, then vibration strength is improved, but ease of manufacture deteriorates
Solution Approach 1:
By segmenting the actuator into standardized modules (movable body, coil assembly, support structure), each component can be manufactured independently using optimized processes, then assembled through simple interfacing mechanisms. This significantly improves ease of manufacture while maintaining the capability to generate strong vibration output
Solution Approach 2:
The coil assembly is positioned within the movable body structure, and the magnet is integrated into the movable body core. This nested arrangement reduces the number of separate assembly steps and allows components to be pre-assembled and tested before final integration, thereby improving ease of manufacture without compromising vibration output
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 solution enables easy assembly and achieves desired vibration output with reduced complexity and cost, enhancing user experience by providing stronger and more felt vibrations in mobile devices.
Implementation Method 1
the movable body vibrates with respect to the fixing body in a magnetization direction of the magnet in cooperation with the coil to which power is supplied and the magnet
Implementation Method 2
an elastic support portion supporting the movable body in such a way that the movable body is freely movable with respect to the fixing body
Data Source
AI summary
A vibration actuator, includes: a movable body including a magnet; a fixing body including a coil; and an elastic support portion supporting the movable body, in which: the fixing body includes: a first fixing body disposed on one side of a vibration direction so as to cover the movable body, and a second fixing body that is bonded to the first fixing body and being configured to accommodate the movable body in such a way that the movable body is capable of vibrating, in which: the elastic support portion is a plate-shaped elastic body that includes one end portion fixed to the movable body and is provided to protrude from an outer periphery of the movable body in a radial direction, and another end portion of the elastic support portion is fixed while being sandwiched between the first fixing body and the second fixing body.