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A linear vibrating motor

A linear vibration and motor technology, applied in the field of motors, can solve the problems of shrapnel damage, resonant frequency deviation, disturbing the movement trajectory of the vibrator, etc. of the linear vibration motor, and achieve the effect of reducing damage

Active Publication Date: 2020-08-25
GOERTEK INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, the magnetically conductive shell will generate a large suction force on the magnet assembly, which will interfere with the movement track of the vibrator in the vibration direction, making the designed resonance frequency deviate from the actual situation, and also cause serious damage to the shrapnel of the linear vibration motor. big damage

Method used

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  • A linear vibrating motor
  • A linear vibrating motor
  • A linear vibrating motor

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Embodiment Construction

[0032] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.

[0033] The following description of at least one exemplary embodiment is merely illustrative in nature and in no way taken as limiting the invention, its application or uses.

[0034] Techniques, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods and devices should be considered part of the description.

[0035] In all examples shown and discussed herein, any specific values ​​should be construed as exemplary only, and not as limitations. Therefore, other instances of the exemplary embodiment may have dif...

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Abstract

The invention discloses a linear vibration motor, and the motor comprises a housing (1) and a drive device accommodated in the housing (1). The housing (1) is provided with a magnetic conduction part (111), and the drive device comprises a coil (2), a Halbach array and a magnetic conduction assembly (3). A plane where the coil (2) is located is parallel to a vibration direction, and the coil (2) and the magnetic conduction part (111) are respectively disposed at two sides of the Halbach array. Moreover, the coil (2) is located at one side of a strong magnetic field of the Halbach array. The Halbach array is provided with radial magnets (41a, 41b) and a parallel magnet (42), wherein the magnetizing directions of the radial magnets (41a, 41b) are perpendicular to the plane where the coil (2) is located, and the magnetizing direction of the parallel magnet (42) is parallel to a vibration direction. The magnetic conduction assembly (3) is disposed on the surface, facing the magnetic conduction part (111), of the Halbach array, and at least covers the radial magnets (41a, 41b). There is a gap (AS) between the magnetic conduction assembly (3) and the magnetic conduction part (111).

Description

technical field [0001] The present invention relates to the technical field of motors, and more specifically, the present invention relates to a linear vibration motor. Background technique [0002] With the development of communication technology, portable electronic devices, such as mobile phones, tablet computers, and multimedia entertainment devices, have become necessities in people's lives. In these electronic devices, micro linear vibration motors are usually used for system feedback, such as vibration feedback for mobile phone call notifications. [0003] A linear vibration motor usually includes a vibrator and a stator. The vibrator further includes a mass block, a magnet assembly and shrapnel, etc. The stator further includes an FPCB, a coil, etc., wherein the coil and the FPCB are fixedly connected to the shell of the linear vibration motor, and the mass block and the magnet assembly are fixed. connected together, the shrapnel is connected between the mass block ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K33/18
CPCH02K33/18
Inventor 祖峰磊秦小森
Owner GOERTEK INC