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Vibration motor

A technology of vibrating motor and vibrator, which is applied in the direction of fluid, electrical components, electromechanical devices, etc., which utilize vibration, and can solve problems such as limited improvement space.

Active Publication Date: 2019-11-12
AAC TECH NANJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The traditional method of increasing the damping and reducing the Q value to expand the bandwidth is close to the limit, and the room for improvement is limited

Method used

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Embodiment Construction

[0032] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0033] figure 1 It is a structural sectional view of the vibration motor in one embodiment, figure 2 for with figure 1 Corresponding schematic diagram of the overall structure of the vibration motor, the vibration motor can adjust the resonant frequency, so that the vibration motor can have a sufficiently high response in a wide frequency range. refer to figure 1 and figure 2 As shown, the vibration motor includes a housing 102 with a cylindrical inner cavity, a magnetic vibrator 103 accommodated in the inner cavity of the housing 102, and a magnetic component supporting the vibration of the vibrator 103. The housing is fixed with a first coil 101, which can Optionally, the first coil 101 can be sleeved outside the housing 102 , and in other embodiments, the first coil 101 can also be disposed inside the housing 102 . Both ends of the casing 102 ...

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PUM

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Abstract

The invention provides a vibration motor. The vibration motor includes a shell body having an internal cavity, a magnetic vibrator and a magnetic component driving the vibrator to vibrate, wherein thevibrator and the magnetic component are respectively accommodated in an internal cavity of the shell body. A first wire coil is fixed on the shell body, a second wire coil is fixed on the magnetic component, an alternating current is applied on the first wire coil, the vibrator is driven to vibrate along a direction of the internal cavity of the shell body, an adjustable current is applied on thesecond wire coil, the magnetic field of the magnetic component is repelled from the magnetic field of the vibrator, and a restoring force for rebound is provided for the vibrator to enable the vibrator to reciprocate in the inner cavity of the shell body; the size of a magnetic field generated via the magnetic component is adjusted to change the magnitude of the restoring force generated via themagnetic component, and thus resonant frequency is adjusted when the vibrator vibrates. The vibration motor disclosed in the invention can be used for adjusting the resonant frequency, and the vibration motor is enabled to have response which is high enough in a wide frequency band scope.

Description

【Technical field】 [0001] The invention relates to the technical field of motors and controls, in particular to a vibration motor. 【Background technique】 [0002] With the development of electronic technology, portable consumer electronic products are becoming more and more popular, such as mobile phones, handheld game consoles, navigation devices or handheld multimedia entertainment equipment, etc., generally use vibration motors for system feedback, such as mobile phone Incoming call prompts, information prompts, navigation prompts, vibration feedback of game consoles, etc. Such a wide range of applications has higher requirements for the vibration performance of the vibration motor. [0003] In smart devices, corresponding to different scenarios, motors are often required to work at different frequencies. The vibration motor can be simplified as a single-degree-of-freedom system with a large response at the resonant frequency and a small response away from the resonant f...

Claims

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Application Information

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IPC IPC(8): H02K33/18
CPCH02K33/18B06B1/045H02K33/16H02K33/02H02K33/12
Inventor 刘柯佳王尧汤赟蓝睿智吴融融陈卫敏
Owner AAC TECH NANJING
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