WO2020134378A1 - 线性振动电机 - Google Patents

线性振动电机 Download PDF

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Publication number
WO2020134378A1
WO2020134378A1 PCT/CN2019/111296 CN2019111296W WO2020134378A1 WO 2020134378 A1 WO2020134378 A1 WO 2020134378A1 CN 2019111296 W CN2019111296 W CN 2019111296W WO 2020134378 A1 WO2020134378 A1 WO 2020134378A1
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WO
WIPO (PCT)
Prior art keywords
vibration
arm
fixed
magnetic
vibration motor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2019/111296
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English (en)
French (fr)
Inventor
汤赟
毛路斌
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AAC Technologies Holdings Shenzhen Co Ltd
AAC Technologies Holdings Nanjing Co Ltd
Original Assignee
AAC Acoustic Technologies Shenzhen Co Ltd
AAC Technologies Holdings Nanjing Co Ltd
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Application filed by AAC Acoustic Technologies Shenzhen Co Ltd, AAC Technologies Holdings Nanjing Co Ltd filed Critical AAC Acoustic Technologies Shenzhen Co Ltd
Publication of WO2020134378A1 publication Critical patent/WO2020134378A1/zh
Anticipated expiration legal-status Critical
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
    • B06B1/04—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with electromagnetism
    • B06B1/045—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with electromagnetism using vibrating magnet, armature or coil system
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K33/00—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system
    • H02K33/12—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with armatures moving in alternate directions by alternate energisation of two coil systems
    • H02K33/14—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with armatures moving in alternate directions by alternate energisation of two coil systems wherein the alternate energisation and de-energisation of the two coil systems are effected or controlled by movement of the armatures
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K33/00—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system
    • H02K33/18—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with coil systems moving upon intermittent or reversed energisation thereof by interaction with a fixed field system, e.g. permanent magnets

Definitions

  • the utility model relates to a vibration motor, in particular to a linear vibration motor used for portable consumer electronic products.
  • vibration motors for system feedback, such as mobile phone Call reminder, information reminder, navigation reminder, game machine vibration feedback, etc.
  • system feedback such as mobile phone Call reminder, information reminder, navigation reminder, game machine vibration feedback, etc.
  • the related art linear vibration motor includes a base with an accommodation space, a vibration unit located in the accommodation space, an elastic member that fixes and suspends the vibration unit in the accommodation space, and a coil fixed to the base, The magnetic field generated by the energization of the coil interacts with the magnetic field generated by the vibration unit, thereby driving the vibration unit to reciprocate linearly to generate vibration.
  • the driving force received by the vibration unit is directly determined by the Lorentz force generated between the vibration unit and the coil, because the generation between the vibration unit and the coil The strength of the magnetic field is limited, and the Lorentz force generated between the two is limited, making the vibration effect limited.
  • the purpose of the utility model is to provide a linear vibration motor with excellent vibration effect.
  • the present invention provides a linear vibration motor, which includes a base with an accommodation space, a vibration unit disposed in the accommodation space, and an elasticity for suspending the vibration unit in the accommodation space And a magnetic steel component fixed to the base and driving the vibration unit to vibrate, the elastic member is located on one side of the vibration direction of the vibration unit; the vibration unit includes a mass, along the vibration unit A vibration direction penetrates the receiving groove of the mass and at least a pair of coils disposed at the receiving groove and fixed to the mass respectively, and the through hole formed by each coil winding faces the magnetic steel component
  • the magnetic steel assembly includes two magnetic steels respectively fixed on opposite sides of the base along the vibration direction, and the two magnetic steels are at least partially located in the receiving slot and are both connected with the coil Set at intervals; the two magnetic steels are magnetized along the vibration direction and the magnetic poles are arranged oppositely in the same direction.
  • the magnetic steel assembly further includes an iron core sandwiched between the two magnetic steels, and the iron core is spaced from the coil.
  • the through hole and the iron core are arranged directly opposite.
  • the mass block further includes two fixing grooves recessed outward from opposite sides of the receiving groove, and the two coils are respectively fixed in the two fixing grooves.
  • the groove depth of the fixing groove is equal to the thickness of the coil.
  • the elastic member includes a ring-shaped first fixed arm, a ring-shaped second fixed arm, and a spring arm connecting the first fixed arm and the second fixed arm; the first fixed arm It is arranged around the periphery of the receiving groove and fixedly connected with the mass block, the second fixed arm is connected to the base, and the elastic arm is suspended.
  • the elastic member further includes a reinforcing arm bent and extending from a periphery of the second fixing arm, and the reinforcing arm is fixedly connected to the base.
  • a side of the mass close to the elastic member protrudes and extends in the direction of the elastic member to form a fixing platform, the fixing platform extends along the periphery of the receiving groove, and the first fixing arm is sleeved on The fixing table is fixed.
  • the vibration unit includes a mass, an accommodating groove penetrating the mass in the vibration direction of the vibrating unit, and at least a pair of relative spaces disposed in the accommodating groove
  • each of the coils fixed to the mass block the through-hole formed by the winding of each of the coils faces the magnetic steel assembly
  • the magnetic steel assembly includes opposite two respectively fixed to the base along the vibration direction
  • Two magnetic steels on the side two of the magnetic steels are at least partially located in the receiving slot and are spaced apart from the coil; both of the magnetic steels are magnetized along the vibration direction and the magnetic poles are homogeneously opposite Settings.
  • the magnetic lines of force generated by the two magnetic poles of the magnetic steel located in the receiving slot respectively pass through the coil to form a magnetic circuit, which increases the Lorentz force generated between the coil and the magnetic steel ,
  • the driving effect achieved on the vibration unit is strong, so that the vibration effect of the linear vibration motor is excellent.
  • Figure 1 is a perspective structural view of a linear vibration motor of the present invention
  • FIG. 2 is an exploded view of a part of the three-dimensional structure of the linear vibration motor of the present invention
  • Figure 3 is a cross-sectional view taken along line A-A in Figure 1;
  • the present invention provides a linear vibration motor 100, including a base 1, a vibration unit 2, an elastic member 3 and a magnetic steel assembly 4.
  • the base 1 has an accommodating space 10 for accommodating the vibration unit 2, the elastic member 3 and the magnetic steel component 4.
  • the base 1 includes a base 11 and a cover plate 12 that covers the base 11 and encloses the receiving space.
  • the vibration unit 2 is placed in the storage space 10.
  • the elastic member 3 suspends the vibration unit 2 in the receiving space to provide vibration conditions.
  • the elastic member 3 is located on one side of the vibration unit 2 in the vibration direction and connected to the vibration unit 2 to form a vibration structure in the vertical Z-axis direction.
  • the magnetic steel component 4 is fixed to the base 1.
  • the vibration unit 2 includes a mass 21, an accommodating groove 22 penetrating therethrough in the vibration direction of the vibration unit 2, and at least a pair of opposing spaces disposed in the accommodating groove 22 and fixed to the mass respectively
  • the coil 23 of 21 is used to drive the vibration unit 2 to vibrate, and the through-hole 230 formed by winding the coil 23 toward the magnetic steel component 4.
  • the number of the coils 23 is not limited.
  • the coils 23 include two and are respectively fixed to the mass 21, and the two coils 23 are along the Vibration directions (ie, Z-axis directions) are respectively located on opposite sides of the vibration unit 2; the mass 21 is provided with a fixing groove 211 and a fixing table 212, and the fixing groove 211 includes at least two The coil 23 is provided correspondingly.
  • the two fixing grooves 211 are formed by recessing the opposite sides of the receiving groove 22 respectively, and the two coils 23 are respectively fixed in the two fixing grooves 211; of course, the receiving groove 22 Four may be provided, and two of the receiving slots 22 are used to receive two of the coils 23.
  • the fixing platform 212 is formed by a side of the mass 21 near the elastic member 3 protruding and extending toward the elastic member 3.
  • the fixing base 212 extends along the periphery of the receiving slot 22, and the two coils 23 are respectively fixed in the two fixing slots 211.
  • the thickness of the coil 23 is the dimension of the groove depth direction of the fixing groove 211, and the groove depth of the fixing groove 211 is equal to the thickness of the coil 23, this structure allows the coil 23 to be installed After the fixing groove 211 is not occupied, the space of the accommodating groove 22 is not occupied, so that the magnetic steel component 4 can be designed to be larger, providing greater driving force, thereby improving the vibration effect.
  • the elastic member 3 includes a ring-shaped first fixed arm 31, a ring-shaped second fixed arm 32, a spring arm 33 connecting the first fixed arm 31 and the second fixed arm 32, and a reinforcing arm 34 .
  • the first fixing arm 31 is disposed around the periphery of the receiving slot 22 and fixedly connected to the mass 21. Specifically, the first fixing arm 31 is sleeved on the fixing platform 212 to form a fixing, and at the same time, the elastic arm 33 is suspended.
  • the second fixed arm 32 is connected to the base 1, and the elastic arm 33 is suspended to provide a vibration restoring force and a supporting force.
  • the reinforcing arm 34 is formed by bending and extending the periphery of the second fixing arm 32.
  • the reinforcing arm 34 is fixedly connected to the base 1 to improve the reliability of the first fixing arm 31.
  • the magnetic steel assembly 4 includes two magnetic steels 41 respectively fixed to opposite sides of the base 1 along the vibration direction (Z-axis direction) and iron sandwiched between the two magnetic steels 41 Core 42, one of the magnetic steel is fixed to the bottom plate 11, and the other magnetic steel is fixed to the upper cover 12; both of the magnetic steel 41 are at least partially located in the receiving slot 22 and are both connected to the coil 23 Spaced, the iron core 42 is spaced from the coil 23 and is disposed opposite to the through hole 230.
  • the two magnetic steels 41 are both magnetized along the vibration direction (Z-axis direction) and the magnetic poles are arranged oppositely in the same direction.
  • the magnetization directions of the two magnetic steels 41 are as shown in FIG. ,
  • the magnetic poles on the side far away from the iron core 42 are all S poles; the magnetic lines of force generated by the N poles of the two magnetic steels 41 respectively pass through the coil 23 to form a magnetic circuit, which increases the energization of the coil 23
  • the Lorentz force generated between the magnetic steel 41 and the driving effect achieved by the vibration unit 2 is strong, so that the vibration effect of the linear vibration motor 100 is excellent.
  • the magnetic force lines generated by the N poles of the two magnetic steels 41 are collected through the iron core 42, and the iron core 42 guides the concentrated magnetic force lines to the coil 23 so as to pass through the
  • the magnetic force lines of the coil 23 are more concentrated, which effectively increases the magnetic field strength of the magnetic field environment in which the coil 23 is located, and increases the Lorentz force generated between the coil 23 and the magnetic steel 41.
  • the unit 2 realizes a stronger driving effect, so that the vibration effect of the linear vibration motor 100 is better.
  • the vibration unit includes a mass, an accommodating groove penetrating the mass in the vibration direction of the vibrating unit, and at least a pair of relative spaces disposed in the accommodating groove
  • each of the coils fixed to the mass block the through-hole formed by the winding of each of the coils faces the magnetic steel assembly
  • the magnetic steel assembly includes opposite two respectively fixed to the base along the vibration direction
  • Two magnetic steels on the side two of the magnetic steels are at least partially located in the receiving slot and are spaced apart from the coil; both of the magnetic steels are magnetized along the vibration direction and the magnetic poles are homogeneously opposite Settings.
  • the magnetic lines of force generated by the two magnetic poles of the magnetic steel located in the receiving slot respectively pass through the coil to form a magnetic circuit, which increases the Lorentz force generated between the coil and the magnetic steel ,
  • the driving effect achieved on the vibration unit is strong, so that the vibration effect of the linear vibration motor is excellent.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Mechanical Engineering (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)

Abstract

一种线性振动电机，其包括具有收容空间（10）的基座（1）、置于收容空间（10）的振动单元（2）、将振动单元（2）悬置于收容空间（10）内的弹性件（3）以及固定于基座（1）并驱动振动单元（2）振动的磁钢组件（4），弹性件（3）位于振动单元（2）的振动方向的一侧；振动单元（2）包括质量块（21）、沿振动单元（2）的振动方向贯穿质量块（21）的收容槽（22）以及至少一对相对间隔设置于收容槽（22）且分别固定于质量块（21）的线圈（23），每一线圈（23）绕线形成的通孔（230）朝向磁钢组件（4）；磁钢组件（4）包括分别固定于基座（1）沿振动方向的相对两侧的两个磁钢（41），两个磁钢（41）均至少部分位于收容槽（22）内且均与线圈（23）间隔设置；两个磁钢（41）均沿振动方向充磁且磁极呈同性相对设置。与相关技术相比，该线性振动电机振动效果优。

Description

线性振动电机 技术领域
本实用新型涉及一种振动电机，尤其涉及一种用于便携式消费性电子产品的线性振动电机。
 背景技术
随着电子技术的发展，便携式消费性电子产品越来越受人们的追捧，如手机、掌上游戏机、导航装置或掌上多媒体娱乐设备等，一般都会用到振动电机来做系统反馈，比如手机的来电提示、信息提示、导航提示、游戏机的振动反馈等。如此广泛的应用，就要求振动电机的性能高，稳定性好且使用寿命长。
相关技术的线性振动电机包括具收容空间的基座、位于所述收容空间的振动单元、将所述振动单元固定并悬置于所述收容空间的弹性件和固定于所述基座的线圈，通过线圈通电产生的磁场与振动单元产生的磁场相互作用，从而驱动所述振动单元做往复直线运动而产生振动。
 技术问题
然而，相关技术的线性振动电机中，所述振动单元受的驱动力直接由所述振动单元与所述线圈之间产生的洛伦兹力决定，由于所述振动单元与所述线圈之间产生的磁场强度有限，两者之间产生的洛伦兹力受到限制，使得振动效果有限。
因此，实有必要提供一种新的线性振动电机来解决上述问题。
 技术解决方案
本实用新型的目的在于提供一种振动效果优的线性振动电机。
为解决上述技术问题，本实用新型提供一种线性振动电机，其包括具有收容空间的基座、置于所述收容空间的振动单元、将所述振动单元悬置于所述收容空间内的弹性件以及固定于所述基座并驱动所述振动单元振动的磁钢组件，所述弹性件位于所述振动单元的振动方向的一侧；所述振动单元包括质量块、沿所述振动单元的振动方向贯穿所述质量块的收容槽以及至少一对相对间隔设置于所述收容槽且分别固定于所述质量块的线圈，每一所述线圈绕线形成的通孔朝向所述磁钢组件；所述磁钢组件包括分别固定于所述基座沿所述振动方向的相对两侧的两个磁钢，两个所述磁钢均至少部分位于所述收容槽内且均与所述线圈间隔设置；两个所述磁钢均沿所述振动方向充磁且磁极呈同性相对设置。
优选的，所述磁钢组件还包括夹设于两个所述磁钢之间的铁芯，所述铁芯与所述线圈间隔设置。
优选的，所述通孔与所述铁芯正对设置。
优选的，所述质量块还包括由所述收容槽相对两侧向外凹陷的两个固定槽，两个所述线圈分别固定于两个所述固定槽内。
优选的，所述固定槽的槽深等于所述线圈的厚度。
优选的，所述弹性件包括呈环状的第一固定臂、呈环状的第二固定臂以及连接所述第一固定臂与所述第二固定臂的弹臂；所述第一固定臂环绕所述收容槽的周缘设置且与所述质量块固定连接，所述第二固定臂的连接于所述基座，所述弹臂悬空设置。
优选的，所述弹性件还包括由所述第二固定臂周缘弯折延伸的加强臂，所述加强臂与所述基座固定连接。
优选的，所述质量块靠近所述弹性件的一侧向所述弹性件方向凸出延伸形成固定台，所述固定台沿所述收容槽的周缘延伸，所述第一固定臂套设于所述固定台形成固定。
 有益效果
与相关技术相比，本发明的线性振动电机中，所述振动单元包括质量块、沿所述振动单元的振动方向贯穿所述质量块的收容槽以及至少一对相对间隔设置于所述收容槽且分别固定于所述质量块的线圈，每一所述线圈绕线形成的通孔朝向所述磁钢组件；所述磁钢组件包括分别固定于所述基座沿所述振动方向的相对两侧的两个磁钢，两个所述磁钢均至少部分位于所述收容槽内且均与所述线圈间隔设置；两个所述磁钢均沿所述振动方向充磁且磁极呈同性相对设置。上述结构中，两个所述磁钢位于所述收容槽内的磁极产生的磁力线分别穿过所述线圈形成磁回路，增大所述线圈通电后与所述磁钢之间产生洛伦兹力，对所述振动单元实现的驱动效果强，使得所述线性振动电机的振动效果优。
 附图说明
为了更清楚地说明本实用新型实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本实用新型的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其它的附图，其中：
图1为本实用新型线性振动电机的立体结构图；
图2为本实用新型线性振动电机的部分立体结构分解图；
图3为沿图1中A-A线的剖示图；
图4为本实用新型线性振动电机的部分结构装配图。
 本发明的实施方式
下面将结合本实用新型实施例中的附图，对本实用新型实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅是本实用新型的一部分实施例，而不是全部的实施例。基于本实用新型中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其它实施例，都属于本实用新型保护的范围。
请同时参阅图1-4，本发明提供一种线性振动电机100，包括基座1、振动单元2、弹性件3以及磁钢组件4。
所述基座1具有收容空间10，用于收容所述振动单元2、所述弹性件3以及所述磁钢组件4。
所述基座1包括底座11和盖设于底座11并共同围成收容空间的盖板12。
所述振动单元2置于所述收容空间10内。所述弹性件3将所述振动单元2悬置于所述收容空间，提供振动条件。本实施方式中，所述弹性件3位于所述振动单元2沿其振动方向的一侧并与所述振动单元2连接，形成沿竖直方向的Z轴方向振动结构。所述磁钢组件4固定于所述基座1。
具体的，所述振动单元2包括质量块21、沿所述振动单元2的振动方向贯穿其上的收容槽22以及至少一对相对间隔设置于所述收容槽22且分别固定于所述质量块21的线圈23，所述线圈23用以驱动所述振动单元2振动，所述线圈23绕线形成的通孔230朝向所述磁钢组件4。
值得一提的是，所述线圈23的数量是不限的，比如，本实施方式中，所述线圈23包括两个且分别固定于所述质量块21，两个所述线圈23沿所述振动方向（即Z轴方向）分别位于所述振动单元2的相对两侧；所述质量块21设有固定槽211和固定台212，所述固定槽211至少包括两个且分别与两个所述线圈23对应设置。
进一步的，两个所述固定槽211由所述收容槽22相对两侧分别向外凹陷形成，两个所述线圈23分别固定于两个所述固定槽211内；当然，所述收容槽22也可以设置四个，其中两个所述收容槽22用于收容两个所述线圈23。
所述固定台212由所述质量块21靠近所述弹性件3的一侧向所述弹性件3方向凸出延伸形成。所述固定台212沿所述收容槽22的周缘延伸，两个所述线圈23分别固定于两个所述固定槽211内。
更进一步的，所述线圈23的厚度即为所述固定槽211的槽深度方向的尺寸，且所述固定槽211的槽深等于所述线圈23的厚度，该结构可使所述线圈23安装于所述固定槽211后不占用所述收容槽22的空间，使得所述磁钢组件4可设计更大，提供更大的驱动力，从而提高振动效果。
所述弹性件3包括呈环状的第一固定臂31、呈环状的第二固定臂32、连接所述第一固定臂31和所述第二固定臂32的弹臂33以及加强臂34。
所述第一固定臂31环绕所述收容槽22的周缘设置且与所述质量块21固定连接。具体的，所述第一固定臂31套设于所述固定台212形成固定，同时使得所述弹臂33实现悬空。
所述第二固定臂32的连接于所述基座1，所述弹臂33悬空设置，用于提供振动回复力和支撑力。
所述加强臂34由所述第二固定臂32周缘弯折延伸形成，所述加强臂34与所述基座1固定连接，提高所述第一固定臂31的可靠性。
所述磁钢组件4包括分别固定于所述基座1沿所述振动方向（Z轴方向）的相对两侧的两个磁钢41以及夹设于两个所述磁钢41之间的铁芯42，其中一个磁钢固定于所述底板11，另外一个磁钢固定于所述上盖12；两个所述磁钢41均至少部分位于所述收容槽22内且均与所述线圈23间隔设置，所述铁芯42与所述线圈23间隔且与所述通孔230正对设置。
本实施方式中，两个所述磁钢41均沿所述振动方向（Z轴方向）充磁且磁极呈同性相对设置。
上述结构中，以图3为例进一步说明，两个所述磁钢41的充磁方向如图3所示，两个所述磁钢41靠近所述铁芯42一侧的磁极均为N极，其远离所述铁芯42一侧的磁极均为S极；两个所述磁钢41的N极产生的磁力线分别穿过所述线圈23形成磁回路，增大了所述线圈23通电后与所述磁钢41之间产生洛伦兹力，对所述振动单元2实现的驱动效果强，使得所述线性振动电机100的振动效果优。
通过增设所述铁芯42，使两个所述磁钢41的N极产生的磁力线通过所述铁芯42汇集，所述铁芯42将集中的磁力线导向所述线圈23，使得穿过所述线圈23的磁力线更加集中，有效地增加了所述线圈23所处的磁场环境的磁场强度，增大了所述线圈23与所述磁钢41之间产生的洛伦兹力，对所述振动单元2实现更强的驱动效果，使得所述线性振动电机100的振动效果更优。
与相关技术相比，本发明的线性振动电机中，所述振动单元包括质量块、沿所述振动单元的振动方向贯穿所述质量块的收容槽以及至少一对相对间隔设置于所述收容槽且分别固定于所述质量块的线圈，每一所述线圈绕线形成的通孔朝向所述磁钢组件；所述磁钢组件包括分别固定于所述基座沿所述振动方向的相对两侧的两个磁钢，两个所述磁钢均至少部分位于所述收容槽内且均与所述线圈间隔设置；两个所述磁钢均沿所述振动方向充磁且磁极呈同性相对设置。上述结构中，两个所述磁钢位于所述收容槽内的磁极产生的磁力线分别穿过所述线圈形成磁回路，增大所述线圈通电后与所述磁钢之间产生洛伦兹力，对所述振动单元实现的驱动效果强，使得所述线性振动电机的振动效果优。
以上所述的仅是本实用新型的实施方式，在此应当指出，对于本领域的普通技术人员来说，在不脱离本实用新型创造构思的前提下，还可以做出改进，但这些均属于本实用新型的保护范围。

Claims (8)

  1. 一种线性振动电机，其包括具有收容空间的基座、置于所述收容空间的振动单元、将所述振动单元悬置于所述收容空间内的弹性件以及固定于所述基座并驱动所述振动单元振动的磁钢组件，所述弹性件位于所述振动单元的振动方向的一侧，其特征在于，所述振动单元包括质量块、沿所述振动单元的振动方向贯穿所述质量块的收容槽以及至少一对相对间隔设置于所述收容槽且分别固定于所述质量块的线圈，每一所述线圈绕线形成的通孔朝向所述磁钢组件；所述磁钢组件包括分别固定于所述基座沿所述振动方向的相对两侧的两个磁钢，两个所述磁钢均至少部分位于所述收容槽内且均与所述线圈间隔设置；两个所述磁钢均沿所述振动方向充磁且磁极呈同性相对设置。
  2. 根据权利要求1所述的线性振动电机，其特征在于，所述磁钢组件还包括夹设于两个所述磁钢之间的铁芯，所述铁芯与所述线圈间隔设置。
  3. 根据权利要求2所述的线性振动电机，其特征在于，所述通孔与所述铁芯正对设置。
  4. 根据权利要求1所述的线性振动电机，其特征在于，所述质量块还包括由所述收容槽相对两侧向外凹陷的两个固定槽，两个所述线圈分别固定于两个所述固定槽内。
  5. 根据权利要求4所述的线性振动电机，其特征在于，所述固定槽的槽深等于所述线圈的厚度。
  6. 根据权利要求1所述的线性振动电机，其特征在于，所述弹性件包括呈环状的第一固定臂、呈环状的第二固定臂以及连接所述第一固定臂与所述第二固定臂的弹臂；所述第一固定臂环绕所述收容槽的周缘设置且与所述质量块固定连接，所述第二固定臂的连接于所述基座，所述弹臂悬空设置。
  7. 根据权利要求6所述的线性振动电机，其特征在于，所述弹性件还包括由所述第二固定臂周缘弯折延伸的加强臂，所述加强臂与所述基座固定连接。
  8. 根据权利要求7所述的线性振动电机，其特征在于，所述质量块靠近所述弹性件的一侧向所述弹性件方向凸出延伸形成固定台，所述固定台沿所述收容槽的周缘延伸，所述第一固定臂套设于所述固定台形成固定。
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