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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 small ampere force, limited number of coil turns and effective length, long motor response time, etc., to achieve the effect of increasing the driving force

Active Publication Date: 2019-01-04
GOERTEK INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] It can be seen that the reaction force of the above-mentioned Ampere's force is the only force driving the vibration of the vibrator part, but limited by the space volume of the coil, the number of turns of the coil and the effective length are limited, the Ampere's force is usually small, which leads to the existing There is an important reason why the motor has a long response time, therefore, it is very necessary to provide a motor structure that can increase the driving force provided to the vibrator part

Method used

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  • A linear vibrating motor
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Embodiment Construction

[0038] 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.

[0039] 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.

[0040] 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.

[0041] 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

A linear vibration motor comprises a housing (1), a drive device and a mass block (6). The drive device and the mass block (6) are both accommodated in the housing (1). The drive device comprises a Halbach array (4) and an electromagnet. The Halbach array (4) is fixed with respect to the mass block (6). The electromagnet is fixed with respect to the housing (1). The electromagnet comprises a coil (2) and a core (3). A plane in which the coil (2) is located is parallel to a vibration direction. The Halbach array (4) comprises two side magnets (41a, 41b) arranged in the vibration direction and a middle magnet (42) sandwiched between the two side magnets (41a, 41b). The side magnet (41a) corresponds to a first side portion (21) of the coil (2). The side magnet (41b) corresponds to a second side portion (22) of the coil (2). The two side magnets (41a, 41b) have opposite magnetization directions and are both perpendicular to the plane in which the coil is located. The middle magnet (42) has a magnetization direction parallel to the vibration direction and causes the coil (2) to be positioned at one side of the Halbach array (4) having a strong magnetic field.

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 part and a stator part. The vibrator part further includes mass blocks, magnets and shrapnel, etc. The stator part further includes FPCB, coils, etc., wherein the coil and FPCB are fixedly connected to the shell of the linear vibration motor, and the mass block and The magnets are fixedly connected together, the shrapnel is connected between the mass block and th...

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