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WO2021134361A1 - 一种振动电机 - Google Patents

一种振动电机 Download PDF

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Publication number
WO2021134361A1
WO2021134361A1 PCT/CN2019/130199 CN2019130199W WO2021134361A1 WO 2021134361 A1 WO2021134361 A1 WO 2021134361A1 CN 2019130199 W CN2019130199 W CN 2019130199W WO 2021134361 A1 WO2021134361 A1 WO 2021134361A1
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WO
WIPO (PCT)
Prior art keywords
vibrator
vibration motor
damping member
mass
motor according
Prior art date
Application number
PCT/CN2019/130199
Other languages
English (en)
French (fr)
Inventor
马杰
Original Assignee
瑞声声学科技(深圳)有限公司
瑞声科技(新加坡)有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 瑞声声学科技(深圳)有限公司, 瑞声科技(新加坡)有限公司 filed Critical 瑞声声学科技(深圳)有限公司
Priority to PCT/CN2019/130199 priority Critical patent/WO2021134361A1/zh
Publication of WO2021134361A1 publication Critical patent/WO2021134361A1/zh

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Classifications

    • 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
    • H02K33/02—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with armatures moved one way by energisation of a single coil system and returned by mechanical force, e.g. by springs
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/34—Reciprocating, oscillating or vibrating parts of the magnetic circuit

Definitions

  • the utility model relates to the technical field of consumer electronics, in particular to a vibration motor.
  • Vibration motors are used for system feedback, such as mobile phone call reminders, information reminders, navigation reminders, and vibration feedback from game consoles.
  • the existing damping arrangement of the vibration motor usually provides a single damping element with damping in a certain direction, or a combination of multiple damping elements provides damping in multiple directions. This damping distribution causes the structure of the motor to be complicated and the damping takes up The space is large, which affects the volume of the motor.
  • the purpose of the utility model is to provide a vibration motor with simple structure, convenient assembly and small space.
  • a vibration motor comprising a housing with a housing space, an elastic piece arranged in the housing space and connected to the housing, supported by the elastic piece and suspended in the housing
  • the vibrator in the space, the stator accommodated in the accommodating space and opposite to the vibrator, and the damping member sandwiched between the elastic sheet and the vibrator, the elastic sheet and the vibrator in the first direction and the second direction
  • the damping member is clamped in both directions, and the first direction is perpendicular to the second direction.
  • the vibrator includes a mass and a magnetic steel fixedly connected to the mass, and the damping member is clamped between the elastic piece and the mass in both the first direction and the second direction.
  • the mass block has a square shape, which includes a first side parallel to the first direction and a second side parallel to the second direction;
  • the damping member is located at the corner of the mass block, and includes a A first connecting section on one side and a second connecting section arranged on the second side and connected to the first connecting section;
  • the elastic sheet includes a middle connecting section connected to the housing, and a second connecting section connected to the middle respectively
  • the first connecting arm and the second connecting arm connected at both ends of the segment, the first connecting arm and the second connecting arm both include a first segment of the first connecting segment that clamps the damping member, and a second
  • the connecting section is connected with the second section of the first section, and the connecting end connected with the second section and fixedly connected with the mass block to support the mass block.
  • the mass block includes a mounting hole in the center for embedding the magnetic steel, and an escape cavity in which the stator is provided with an escape space.
  • the damping member is foam or silica gel.
  • the housing includes a bottom wall and a top wall that are relatively spaced apart and a side wall connecting the bottom wall and the top wall, and the bottom wall, the top wall and the side wall enclose the
  • the stator includes a coil assembly disposed away from the vibrator, and the coil assembly includes a coil and a pole core embedded in the middle of the coil.
  • the stator further includes a magnetic conductive sheet arranged on a side of the coil assembly away from the vibrator.
  • the side surface of the mass block facing the top wall or the bottom wall is provided with a limiting groove, and the top wall or the side surface of the bottom wall facing the mass block is provided in the limiting groove to limit the mass.
  • Limit block for block movement displacement is provided.
  • the magnetic conductive sheet is provided with a gap for welding and routing the coil.
  • the magnetic steel includes at least two regions with opposite magnetic poles, and the angle between the boundary line between the adjacent regions with opposite magnetic poles and the first direction and the second direction is not 90 degrees, and the long axis of the coil The center line of the direction coincides and aligns with the projection of the boundary line toward the top wall.
  • the magnetic pole direction is perpendicular to the plane formed by the first direction and the second direction.
  • the beneficial effect of the present invention is that the damping member of the present invention is sandwiched between the elastic sheet and the vibrator in the first direction and the second direction, and provides damping for the vibrator in multiple directions without passing through Multiple dampers can achieve multi-directional damping effects, thereby effectively simplifying the internal structure of the vibration motor, reducing the space occupied by the damping member, reducing the volume, and effectively ensuring the vibration amplitude of the vibrator and effectively eliminating noise.
  • Figure 1 is a perspective view of a vibrating motor according to an embodiment of the utility model
  • Fig. 2 is a cross-sectional view of Fig. 1 along the A-A direction.
  • Figure 3 is an exploded view of the vibrating motor of the embodiment of the utility model.
  • Fig. 4 is an internal schematic diagram of a vibration motor according to an embodiment of the utility model.
  • FIG. 5 is a schematic diagram of the area where the magnetic steel poles of the vibration motor of the embodiment of the present invention are in the opposite direction.
  • Fig. 6 is a schematic diagram of the long axis of the vibration motor coil according to the embodiment of the utility model.
  • a vibration motor in an embodiment of the present invention includes a housing 10 with a housing space 15, an elastic piece 20 arranged in the housing space 15 and connected to the housing 10, and supported by the elastic piece 20
  • the vibrator 40 suspended in the accommodating space 15, a stator 30 accommodated in the accommodating space 15 and opposite to the vibrator 40, and a damping member 43 sandwiched between the elastic sheet 20 and the vibrator 40.
  • the elastic piece 20 and the vibrator 40 both clamp the damping member 43 in the first direction 1 and the second direction 2, and the first direction 1 and the second direction 2 are perpendicular to each other.
  • the vibrator 40 includes a mass 41 and a magnetic steel 42 fixedly connected to the mass 41.
  • the damping member 43 is clamped between the elastic sheet and the elastic sheet in the first direction and the second direction. Between masses.
  • the mass 41 is square
  • the damping member 43 is made of a material with damping characteristics such as foam or silica gel
  • the damping member 43 is located at the corner of the mass 41, and the mass 41 includes a first direction parallel to the first direction 1.
  • One side 411 is parallel to the second side 412 in the second direction 2.
  • the damping member 43 includes a first connecting section 431 and a second connecting section 432 connected to the first connecting section 431.
  • the first connecting section 431 is arranged on the first side 411, and the second connecting section 432 is arranged on the second side 412. .
  • the elastic piece 20 includes an intermediate connecting section 23 connected to the housing 10, a first connecting arm 25 and a second connecting arm 26 respectively connected to both ends of the intermediate connecting section 23, and the first connecting arm 25 and the second connecting arm 26 both include a first connecting arm 25 and a second connecting arm 26.
  • the section 22 is used to clamp the second connecting section 432 of the damping member 43, and the connecting end 24 is fixedly connected with the mass 41 for suspending the supporting mass 41 in the receiving space 15.
  • the distribution of the damping elements 43 can provide damping for the mass 41 in multiple directions, without the need to provide multiple dampers to achieve multi-directional damping effects, thereby simplifying the internal structure of the vibration motor and reducing the damping elements 43
  • the occupied space reduces the volume, and can effectively ensure the vibration amplitude of the vibrator 40 and effectively eliminate noise.
  • the mass 41 includes a mounting hole 414 in the center for embedding the magnet 42 and provides an escape space for the stator 30 In the avoidance cavity 415, the stator 30 is placed in the avoidance cavity 415.
  • the housing 10 includes a bottom wall 13, a top wall 11, and a side wall 12.
  • the bottom wall 13 and the top wall 11 are relatively spaced apart.
  • the side wall 12 connects the bottom wall 13 and the top wall 11 and is located between the bottom wall 13 and the top wall 11.
  • the bottom wall 13, the top wall 11 and the side wall 12 enclose a receiving space 15.
  • the stator includes a coil assembly arranged far away from the vibrator, and the coil assembly includes a coil and a pole core embedded in the middle of the coil.
  • the stator further includes a magnetic sheet arranged on the side of the coil assembly away from the vibrator, that is, the magnetic sheet can be located between the coil assembly and the bottom wall or between the top wall and the coil assembly.
  • the number of stators is two, which includes two coil components and two magnetic conductive sheets, the two coil components are respectively arranged on the bottom wall and the top wall, the two conductors The magnetic sheets are respectively located between the bottom wall and the coil assembly and between the top wall and the coil assembly.
  • the coil can be used as a vibrator, and the magnetic steel can be used as a stator.
  • An extension portion 131 is formed on the top wall 11 extending away from the receiving space 15, and the surface of the extension portion 131 is provided with a circuit board 14 electrically connected to the coil 31.
  • a notch 331 is provided on the magnetic conductive sheet 33, and the notch 331 is used for welding and routing the coil 31.
  • the side of the mass block 41 facing the top wall 11 or the bottom wall 13 is provided with a limiting groove 413.
  • the side of the top wall 11 or the bottom wall 13 facing the mass block 41 is provided with a limiting block 111, and the limiting block 111 is at least partially placed in the limiting
  • the slot 413 is used to limit the movement and displacement of the mass 41.
  • the magnetic steel 42 includes at least two regions with opposite magnetic poles, wherein the magnetic pole direction is perpendicular to the plane formed by the first direction and the second direction, and adjacent regions with opposite magnetic poles
  • the angle between the boundary line 421 and the first direction 1 and the second direction 2 is non-90 degrees, and the center line 34 of the long axis direction of the coil 31 and the boundary line 421 coincide and align in the projection toward the top wall 11 .
  • the coil 31 when the coil 31 is energized, the energized coil 31 cuts the magnetic lines of induction to form ampere force, and the pole core 32 has a polarity after being polarized.
  • the pole core 32 and the magnet 42 act to form an electromagnetic force.
  • the forces work together to form a driving force F, which is then used to have force components in the first direction 1 and the second direction 2 along the normal direction of the boundary line 421 between the adjacent magnetic pole opposite regions , And then provide driving force for the two directions of movement. And, when the frequency of the current (that is, the frequency of the driving force) is close to the frequency of the motor in a certain direction (the first direction 1 or the second direction 2), the mode in this direction is excited, which is the main direction of motion, and realizes Vibration in a certain direction.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)

Abstract

本实用新型提供了一种振动电机，包括具有收容空间的壳体、设置于收容空间内且与壳体相连的弹片、通过弹片支撑而悬置于收容空间内的振子、收容于收容空间并与振子相对的定子、和夹设于弹片和振子之间的阻尼件，弹片和振子在第一方向和第二方向上均夹持阻尼件，第一方向与第二方垂直。本实用新型阻尼件在第一方向和第二方向上夹设于弹片和振子之间，为振子在多个方向上提供阻尼，无须通过多个阻尼即可实现多方向阻尼效果，进而可有效的简化该振动电机的内部结构，减小阻尼件所占用的空间，减小体积，且可有效保证振子的振动幅度，有效消除噪音。

Description

一种振动电机 技术领域
本实用新型涉及消费电子技术领域，具体的，涉及到一种振动电机。
 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，并随着人们对使用体验感的追求，手机、掌上游戏机、汽车导航或掌上多媒体娱乐设备等电子产品一般会采用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。
目前，振动电机均会采用阻尼件限制振子的振动幅度，从而达到振动电机的工作过程中消除噪音的效果。但现有的振动电机的阻尼布置通常为单个阻尼元件提供某一方向的阻尼，或者多个阻尼元件组合，提供多个方向的阻尼，该阻尼分布导致会电机的结构复杂化，且该阻尼占用的空间大，从而影响电机的体积。
因此，有必要提供一种结构简单、占用空间少且所用的阻尼件数量少、装配方便的振动电机。
 技术问题
本实用新型的目的在于提供一种结构简单、装配方便、空间小的振动电机。
 技术解决方案
本实用新型的技术方案如下：一种振动电机，包括具有收容空间的壳体、设置于所述收容空间内且与所述壳体相连的弹片、通过所述弹片支撑而悬置于所述收容空间内的振子、收容于所述收容空间并与所述振子相对的定子、和夹设于所述弹片和所述振子之间的阻尼件，所述弹片和所述振子在第一方向和第二方向上均夹持所述阻尼件，所述第一方向与所述第二方向垂直。
优选地，所述振子包括质量块、与所述质量块固定连接的磁钢，所述阻尼件在第一方向和第二方向上均夹持于所述弹片与所述质量块之间。
优选地，所述质量块为方形，其包括平行第一方向的第一侧边和平行第二方向的第二侧边；所述阻尼件位于所述质量块的转角处，其包括设置在第一侧边的第一连接段和设置在第二侧边并与所述第一连接段相连的第二连接段；所述弹片包括与壳体相连的中间连接段，以及分别与所述中间连接段两端相连的第一连接臂和第二连接臂，第一连接臂与第二连接臂均包括夹持所述阻尼件的第一连接段的第一段、夹持所述阻尼件第二连接段并与第一段相连的第二段，以及与第二段相连并与所述质量块固定相连以支撑质量块的连接端。
优选地，所述质量块包括位于中心以用于嵌入所述磁钢的安装孔，以及为所述定子提供避让空间且所述定子位于其中的避让腔。
优选地，所述阻尼件为泡棉或硅胶。
优选地，所述壳体包括相对间隔设置的底壁和顶壁以及连接所述底壁和所述顶壁的侧壁，所述底壁、所述顶壁和所述侧壁围成所述收容空间，所述定子包括远离所述振子设置的线圈组件，所述线圈组件包括线圈以及嵌于线圈中间的极芯。
优选地，所述定子还包括设置在所述线圈组件远离所述振子一侧的导磁片。
优选地，所述质量块面向所述顶壁或所述底壁的侧面设有限位槽，顶壁或所述底壁朝向质量块的侧面设有位于所述限位槽内以用来限制质量块运动位移的限位块。
优选地，所述导磁片上开设有用于所述线圈焊接走线的缺口。
优选地，所述磁钢包含至少两个磁极方向相反的区域，相邻的磁极相反的区域之间的交界线与第一方向和第二方向的夹角为非90度，所述线圈长轴方向的中心线与所述交界线在朝向所述顶壁的投影重合对准。
优选地，所述磁极方向垂直于所述第一方向与所述第二方向所形成的平面。
 有益效果
与现有技术相比，本实用新型的有益效果在于：本实用新型阻尼件在第一方向和第二方向上夹设于弹片和振子之间，为振子在多个方向上提供阻尼，无须通过多个阻尼即可实现多方向阻尼效果，进而可有效的简化该振动电机的内部结构，减小阻尼件所占用的空间，减小体积，且可有效保证振子的振动幅度，有效消除噪音。
 附图说明
图1为本实用新型实施例振动电机的立体图；
图2为图1沿A-A方向上横截面剖视图。
图3为本实用新型实施例振动电机的爆炸图。
图4为本实用新型实施例振动电机的内部示意图。
图5为本实用新型实施例振动电机磁钢磁极方向相反的区域的示意图。
图6为本实用新型实施例振动电机线圈长轴的示意图。
 本发明的最佳实施方式
下面结合附图和实施方式对本实用新型作进一步说明。
请参照附图1-6，本实用新型实施例中的一种振动电机，包括具有收容空间15的壳体10、设置于收容空间15内且与壳体10相连的弹片20、通过弹片20支撑而悬置于收容空间15内的振子40、收容于收容空间15并与振子40相对的定子30、和夹设于所述弹片20和振子40之间的阻尼件43。弹片20和振子40在第一方向1和第二方向2上均夹持阻尼件43，第一方向1与第二方向2垂直。
具体的，参照附图4，振子40包括质量块41、与质量块41固定连接的磁钢42，所述阻尼件43在第一方向和第二方向上均夹持于所述弹片与所述质量块之间。其中，质量块41为方形，阻尼件43为泡棉或硅胶等具有阻尼特性的材料，阻尼件43位于所述质量块41的转角处，且该质量块41包括平行第一方向1上的第一侧边411和平行第二方向2上的第二侧边412。该阻尼件43包括第一连接段431和与第一连接段431相连的第二连接段432，第一连接段431设置在第一侧边411，第二连接段432设置在第二侧边412。弹片20包括与壳体10相连的中间连接段23、分别与中间连接段23两端相连的第一连接臂25和第二连接臂26，第一连接臂25与第二连接臂26均包括第一段21、与第一段21相连接的第二段22以及与第二段22相连的连接端24，其中，第一段21用于夹持阻尼件43的第一连接段431，第二段22用于夹持阻尼件43的第二连接段432，连接端24与质量块41固定相连用于将支撑质量块41悬置于收容空间15内。该阻尼件43的分布，可为质量块41在多个方向上提供阻尼，而无需提供通过多个阻尼即可实现多方向阻尼效果，进而可简化该振动电机的内部结构，减小阻尼件43所占用的空间，减小体积，且可有效保证振子40的振动幅度，有效消除噪音。
并且，为了优化该振动电机的内部结构，并保持该振动电机体积的小巧，在本实施例中，质量块41包括位于中心以用于嵌入磁钢42的安装孔414以及为定子30提供避让空间的避让腔415，定子30置于避让腔415内。
壳体10包括底壁13、顶壁11和侧壁12，底壁13、顶壁11相对间隔设置，侧壁12连接底壁13和顶壁11并位于底壁13和顶壁11之间，且底壁13、顶壁11和侧壁12围成收容空间15。定子包括远离所述振子设置的线圈组件，线圈组件包括线圈以及嵌于线圈中间的极芯。且在一些实施例中，定子还包括设置在线圈组件远离振子一侧的导磁片，即导磁片可位于线圈组件与底壁之间或位于顶壁与线圈组件之间。其中，请参照附图4，在另一实施例中，定子的数量为两个，即包含有两个线圈组件和两导磁片，两线圈组件分别设置在底壁和顶壁上，两导磁片分别位于在底壁与线圈组件之间以及顶壁与线圈组件之间，这样，可使本实用新型振动电机的结构紧凑性，部影响振动电机体积的小巧性。另外，需要说明的是，在其他可选的实施例中，线圈可作为振子，磁钢可作为定子的情形。
顶壁11远离收容空间15延伸形成有延伸部131，延伸部131的表面设置有与线圈31电性连接的电路板14。且导磁片33上开设有缺口331，利用该缺口331用于线圈31焊接走线的。
质量块41面向顶壁11或底壁13的侧面设有限位槽413，对应的，顶壁11或底壁13朝向质量块41的侧面设有限位块111，限位块111至少部分置于限位槽413内用于限制质量块41运动位移。
参照附图5和附图6，磁钢42包含至少两个磁极方向相反的区域，其中，磁极方向垂直于第一方向与第二方向所形成的平面，且相邻的磁极相反的区域之间的交界线421与第一方向1和第二方向2之间的夹角为非90度，且线圈31长轴方向的中心线34与交界线421在朝向所述顶壁11的投影重合对准。由此，当线圈31通电时，通电线圈31切割磁感线，形成安培力，且极芯32被极化后具有极性，极芯32与磁钢42作用，形成电磁力，安培力与电磁力共同作用，由此，形成驱动力F，进而利用该驱动力F沿着相邻的磁极相反的区域之间的交界线421的法向，具有第一方向1和第二方向2的力分量，进而为两个方向的运动分别提供驱动力。并且，当电流的频率（即驱动力的频率）与马达在某一方向（第一方向1或第二方向2）的频率相近时，此方向的模态被激发，为主要运动方向，及实现某方向上的振动。
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 (11)

  1. 一种振动电机，包括具有收容空间的壳体、设置于所述收容空间内且与所述壳体相连的弹片、通过所述弹片支撑而悬置于所述收容空间内的振子、收容于所述收容空间并与所述振子相对的定子、和夹设于所述弹片和所述振子之间的阻尼件，其特征在于：所述弹片和所述振子在第一方向和第二方向上均夹持所述阻尼件，所述第一方向与所述第二方向垂直。
  2. 根据权利要求1所述的一种振动电机，其特征在于：所述振子包括质量块、与所述质量块固定连接的磁钢，所述阻尼件在第一方向和第二方向上均夹持于所述弹片与所述质量块之间。
  3. 根据权利要求2所述的一种振动电机，其特征在于：所述质量块为方形，其包括平行第一方向的第一侧边和平行第二方向的第二侧边；所述阻尼件位于所述质量块的转角处，其包括设置在第一侧边的第一连接段和设置在第二侧边并与所述第一连接段相连的第二连接段；所述弹片包括与壳体相连的中间连接段，以及分别与所述中间连接段两端相连的第一连接臂和第二连接臂，第一连接臂与第二连接臂均包括夹持所述阻尼件的第一连接段的第一段、夹持所述阻尼件第二连接段并与第一段相连的第二段，以及与第二段相连并与所述质量块固定相连以支撑质量块的连接端。
  4. 根据权利要求2所述的一种振动电机，其特征在于：所述质量块包括位于中心以用于嵌入所述磁钢的安装孔，以及为所述定子提供避让空间且所述定子位于其中的避让腔。
  5. 根据权利要求1-3任一项所述的一种振动电机，其特征在于：所述阻尼件为泡棉或硅胶。
  6. 根据权利要求2所述的一种振动电机，其特征在于：所述壳体包括相对间隔设置的底壁和顶壁以及连接所述底壁和所述顶壁的侧壁，所述底壁、所述顶壁和所述侧壁围成所述收容空间，所述定子包括远离所述振子设置的线圈组件，所述线圈组件包括线圈以及嵌于线圈中间的极芯。
  7. 根据权利要求6所述的一种振动电机，其特征在于：所述定子还包括设置在所述线圈组件远离所述振子一侧的导磁片。
  8. 根据权利要求7所述的一种振动电机，其特征在于：所述导磁片上开设有用于所述线圈焊接走线的缺口。
  9. 根据权利要求6所述的一种振动电机，其特征在于：所述质量块面向所述顶壁或所述底壁的侧面设有限位槽，顶壁或所述底壁朝向质量块的侧面设有位于所述限位槽内以用来限制质量块运动位移的限位块。
  10. 根据权利要求6所述的一种振动电机，其特征在于：所述磁钢包含至少两个磁极方向相反的区域，相邻的磁极相反的区域之间的交界线与第一方向和第二方向的夹角为非90度，所述线圈长轴方向的中心线与所述交界线在朝向所述顶壁的投影重合对准。
  11. 根据权利要求10所述的一种振动电机，其特征在于：所述磁极方向垂直于所述第一方向与所述第二方向所形成的平面。
PCT/CN2019/130199 2019-12-30 2019-12-30 一种振动电机 WO2021134361A1 (zh)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101478994B1 (ko) * 2014-10-14 2015-01-06 주식회사 블루콤 수평 진동 모터
CN205004934U (zh) * 2015-07-30 2016-01-27 瑞声光电科技(常州)有限公司 振动电机
CN106208605A (zh) * 2016-08-24 2016-12-07 歌尔股份有限公司 一种线性振动马达
CN107425692A (zh) * 2017-07-05 2017-12-01 瑞声科技（南京）有限公司 线性电机
CN110266171A (zh) * 2019-05-24 2019-09-20 瑞声科技(新加坡)有限公司 振动电机

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101478994B1 (ko) * 2014-10-14 2015-01-06 주식회사 블루콤 수평 진동 모터
CN205004934U (zh) * 2015-07-30 2016-01-27 瑞声光电科技(常州)有限公司 振动电机
CN106208605A (zh) * 2016-08-24 2016-12-07 歌尔股份有限公司 一种线性振动马达
CN107425692A (zh) * 2017-07-05 2017-12-01 瑞声科技（南京）有限公司 线性电机
CN110266171A (zh) * 2019-05-24 2019-09-20 瑞声科技(新加坡)有限公司 振动电机

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