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Vibration motor

A technology of vibrating motors and vibrators, which is applied to electrical components, electromechanical devices, etc., and can solve problems such as difficulty in generating resonance and narrow frequency band of resonance

Inactive Publication Date: 2011-04-27
MPLUS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, in conventional vibration motors, the reason why it is difficult to generate resonance is because the frequency band in which resonance occurs is very narrow

Method used

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Embodiment Construction

[0032] Features and advantages of the present invention will become apparent from the following drawings and description.

[0033] figure 1 is an exploded perspective view of a vibration motor according to an embodiment of the present invention, figure 2 is a perspective view showing assembly of a vibrator in a vibration motor according to an embodiment of the present invention.

[0034] A vibration motor according to an embodiment of the present invention includes a coil unit 130 , a vibrator having a magnet 200 , and an elastic body 400 . The vibration motor may further include a base 100 , and the vibrator may further include a weight 500 .

[0035] The base 100 in which the vibration motor components are accommodated has a space to support the vibration motor components. In this embodiment, the bobbin 110 is disposed at the center of the base 100 , and a pair of supporting parts 102 facing each other are formed on either end of the base 100 .

[0036] Specifically, th...

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PUM

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Abstract

The invention discloses a vibration motor. In accordance with an embodiment of the present invention, the vibration motor comprises a cylinder-shaped coil unit, a vibrator inserted into the coil unit and an elastic body elastically supporting the vibrator. The vibrator comprises a magnet that forms an asymmetric magnetic field in a vibration direction. Thus, the vibration motor can have a nonlinear characteristic, and thus a frequency bandwidth in which a resonance occurs can be expanded.

Description

[0001] References to related applications [0002] This application claims the benefit of Korean Patent Application No. 10-2009-0092427 filed with the Korean Intellectual Property Office on September 29, 2009, the entire disclosure of which is hereby incorporated by reference. technical field [0003] The invention relates to a vibration motor. Background technique [0004] A vibration motor is a component that converts electrical energy into mechanical vibrations by using the principle of generating electromagnetic force, and is often installed in mobile phones to generate silent vibration alarms. With the rapid expansion of the mobile phone market and the increase of functions added to mobile phones, there is an increasing demand for smaller and better mobile phone components. As a result, there is an increasing demand for the development of new structures of vibration motors that can overcome the disadvantages of conventional vibration motors and effectively improve the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K33/18
CPCH02K33/16H02K33/06H02K35/06
Inventor 金容振禹基锡李京虎崔准根吴和泳房帝贤李志成朴锡俊李光炯
Owner MPLUS