WO2020237702A1 - 一种振动马达 - Google Patents

一种振动马达 Download PDF

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Publication number
WO2020237702A1
WO2020237702A1 PCT/CN2019/089981 CN2019089981W WO2020237702A1 WO 2020237702 A1 WO2020237702 A1 WO 2020237702A1 CN 2019089981 W CN2019089981 W CN 2019089981W WO 2020237702 A1 WO2020237702 A1 WO 2020237702A1
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Prior art keywords
vibration
side wall
housing
vibrating
vibrating member
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PCT/CN2019/089981
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English (en)
French (fr)
Inventor
马杰
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AAC Technologies Holdings Shenzhen Co Ltd
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AAC Acoustic Technologies Shenzhen Co Ltd
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Publication of WO2020237702A1 publication Critical patent/WO2020237702A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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

Definitions

  • the invention relates to a vibration motor, in particular to a vibration motor used for electronic sound generating devices.
  • a traditional vibration motor includes a casing, a vibrating member contained in the casing, and a spring. The vibrating member and the casing are connected to the spring.
  • the traditional spring can only generate vibration in a single direction due to the shape of the spring, and the vibration effect is not obvious. If you need to generate vibrations in multiple directions, you need to use multiple springs. However, using multiple springs has many assembly processes and complicated processes, which makes it difficult to ensure assembly accuracy. If the assembly accuracy deviates, the vibration motor will not achieve multi-directional vibration. very good result.
  • the purpose of the present invention is to provide a vibration motor, which is intended to solve the problem of poor performance of the conventional vibration motor when vibrating in multiple directions.
  • a vibrating motor comprising a housing with a containing space, and a vibrating member and a fixing member contained in the containing space, the vibrating member having a first vibration direction and a second vibration direction,
  • the vibrating member includes a side wall of the vibrating member extending in the first vibration direction
  • the housing includes a side wall of the housing extending in the second vibration direction
  • the vibration motor further includes a side wall surrounding the vibration.
  • the elastic support member around the member includes two first elastic support arms arranged oppositely, and two second elastic support arms arranged oppositely and enclosed with the two first elastic support arms, so
  • the first elastic support arm includes a first connecting portion connected to the side wall of the vibrating member, and two first vibrating arms extending away from the side wall of the vibrating member from both ends of the first connecting portion
  • the second elastic support arm includes a second connecting portion connected with the side wall of the housing and two second vibrating arms extending from both ends of the second connecting portion in a direction away from the side wall of the housing, respectively ,
  • the first vibration arm is respectively connected with the adjacent second vibration arm.
  • the fixing member includes a circuit board installed on the bottom wall of the housing, and a first coil and a second coil that are electrically connected to the circuit board and wound on the coil support, and the first coil is wound
  • the formed first coil through hole faces the side wall of the vibrating member, and the second coil through hole formed by winding the second coil faces the side wall of the housing.
  • the vibrating member includes a counterweight connected to the elastic support member and provided with an accommodating cavity, a magnetic frame accommodated in the accommodating cavity, and connected to the magnetic frame and arranged in the second A first magnet at both ends of a coil and a second magnet connected to the magnetic frame and arranged at both ends of the second coil.
  • the counterweight includes a side wall of the vibrating member extending along the first vibration direction and A vibration connection side wall connected to the side wall of the vibrating member, and the counterweight is connected to the elastic support member through the side wall of the vibrating member.
  • the housing includes a bottom wall, a top wall opposite to and spaced apart from the bottom wall, and a housing side that is bent and extends from the top wall to the bottom wall and extends along the second vibration direction.
  • a wall, and a connecting side wall that is bent and extended from the top wall to the bottom wall and connected to the side wall of the housing.
  • the two first vibrating arms extending from both ends of the first connecting portion away from the side wall of the vibrating member have the same shape and are arranged symmetrically with respect to the first connecting portion
  • the The two second vibration arms extending away from the side wall of the vibrating member at both ends of the second connecting portion have the same shape and are arranged symmetrically with respect to the second connecting portion.
  • connection position of the first vibrating arm and the second vibrating arm is located at a corner of the housing.
  • the angle formed by the first vibrating arm and the side wall of the vibrating element is greater than the angle formed by the second vibrating arm and the side wall of the housing.
  • first vibration direction and the second vibration direction are perpendicular to each other.
  • the elastic support member is integrally formed.
  • the coil support is specifically an iron core.
  • the vibration motor of the present invention includes a housing with a housing space, and a vibrating member and a fixing member housed in the housing space.
  • the vibrating member can provide vibration in two directions, namely the first vibration direction.
  • the elastic support is arranged around the vibrating member, and is respectively connected with the side wall of the vibrating member extending along the first vibration direction and the side wall of the casing extending along the second vibration direction, so that the The vibration motor can realize vibration in two directions and improve the performance of the vibration motor.
  • FIG. 1 is a schematic structural diagram of a vibration motor according to an embodiment of the present invention
  • Figure 2 is a cross-sectional view of the vibration motor of the embodiment of the present invention along the A-A direction;
  • FIG. 3 is a schematic diagram of an exploded structure of a vibration motor according to an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of the structure of the elastic support in the vibration motor of the embodiment of the present invention.
  • FIG. 5 is a schematic structural view of another angle of the elastic support in the vibration motor of the embodiment of the present invention.
  • FIG. 1 and 2 is a vibration motor provided by an embodiment of the present invention, including a housing 1, a vibrating member 2, a fixing member 3, and an elastic support member 4.
  • the housing 1 has a receiving space 10, and the vibrating member 2, Both the fixing member 3 and the elastic support member 4 are accommodated in the receiving space 10.
  • the vibrating member 2 can provide vibration in both the first vibration direction and the second vibration direction.
  • the vibrating member 2 includes a vibrating member side wall 211 extending in the first vibration direction, and the housing 1 includes a vibration member extending in the second vibration direction.
  • the side wall 13 of the housing is a vibration motor provided by an embodiment of the present invention, including a housing 1, a vibrating member 2, a fixing member 3, and an elastic support member 4.
  • the housing 1 has a receiving space 10, and the vibrating member 2, Both the fixing member 3 and the elastic support member 4 are accommodated in the receiving space 10.
  • the vibrating member 2 can provide vibration in both the first vibration direction and the second vibration direction.
  • the vibrating member 2 includes a
  • the elastic support member 4 is arranged around the vibrating member 2, which includes two first elastic support arms 41 arranged oppositely, and an oppositely arranged and enclosed with the two first elastic support arms 41 Two second elastic support arms 42.
  • the first elastic support arm 41 includes a first connecting portion 411 connected to the side wall 211 of the vibrating member, and two connecting portions 411 extending away from the side wall 211 of the vibrating member.
  • a first vibrating arm 412 and a second elastic support arm 42 include a second connecting portion 421 connected to the side wall 13 of the housing, and two connecting portions 421 extending away from the side wall 13 of the housing.
  • the second vibrating arm 422 and the first vibrating arm 412 are respectively connected to the adjacent second vibrating arm 422.
  • the fixing member 3 includes a circuit board 31, a coil support 32, a first coil 33, and a second coil 34.
  • the circuit board 31 is mounted on the bottom wall 11 of the housing.
  • the coil 34 is electrically connected to the circuit board 31 and is wound on the coil support 32.
  • the first coil 33 is wound to form a first coil through hole, the first coil through hole faces the side wall 211 of the vibrating member, and the second coil 34 is wound to form a first coil.
  • Two coil through holes, the second coil through hole faces the side wall 13 of the housing.
  • the coil support 32 can specifically be an iron core, and the first coil 33 can be fixed by glueing with the inner wall of the top wall 12 of the housing 1.
  • the vibrating member 2 includes a counterweight 21, a magnetic frame 22, a first magnet 23, and a second magnet 24.
  • the counterweight 21 is connected to the elastic support 4, and an accommodating cavity 213 is provided therein, and the magnetic frame 22 is accommodated in the accommodation In the cavity 213, the first magnet 23 is connected to the magnetic frame 22 and arranged on both ends of the first coil 33, and the second magnet 24 is connected to the magnetic frame 22 and arranged on both ends of the second coil 34.
  • the counterweight 21 includes a vibrating member side wall 211 extending along the first vibration direction and a vibration connecting side wall 212 for connecting the vibrating member side wall 211.
  • the counterweight 21 is connected to the elastic support 4 through the vibrating member side wall 211.
  • the first coil 33 and the second coil 34 are wound in a specific manner so that the directions of the first coil through hole and the second coil through hole are perpendicular, so that the first vibration direction and the second vibration direction are perpendicular to each other.
  • the housing 1 includes a bottom wall 11, a top wall 12, a housing side wall 13, and a connecting side wall 14.
  • the top wall 12 and the bottom wall 11 are opposite and spaced apart, and the housing side wall 13 is from the top
  • the wall 12 bends and extends to the bottom wall 11 and extends along the second vibration direction.
  • the connecting side wall 14 is bent and extends from the top wall 12 to the bottom wall 11 and is used to connect the housing side wall 13.
  • the elastic support 4 is integrally formed, and can provide the supporting rigidity required for working in both the first vibration direction and the second vibration direction.
  • the two first vibrating arms 412 extending from both ends of the first connecting portion 411 away from the side wall 211 of the vibrating member have the same shape and are arranged symmetrically with respect to the first connecting portion 411, and are separated from both ends of the second connecting portion 421.
  • the two second vibrating arms 422 extending in the direction of the side wall 211 of the vibrating member have the same shape and are arranged symmetrically with respect to the second connecting portion 421.
  • the symmetrical design makes the motor torsion and swing have a large vibration amplitude, so that the motor has a better vibration effect. .
  • the required support stiffness values in the two directions can be obtained by changing the shape of the first vibrating arm 412 and the second vibrating arm 422.
  • connection position of the first vibrating arm 412 and the second vibrating arm 422 is located at the corner of the housing 1, which fully utilizes the space of the vibrating motor, which is beneficial to the miniaturization of the vibrating motor.
  • the angle formed by the first vibrating arm 412 and the side wall 211 of the vibrating member is greater than the angle formed by the second vibrating arm 422 and the side wall 13 of the housing, so that the stiffness of the first vibration direction and the second vibration direction can be designed separately. More design freedom.

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

Abstract

本发明提供了一种振动马达，包括具有收容空间（10）的壳体（1）、以及收容于收容空间（10）内的振动件（2）及固定件（3），其振动件（2）可以提供两个方向的振动，即第一振动方向和第二振动方向，弹性支撑件（4）围设在振动件（2）周围，且分别与振动件（2）沿第一振动方向延伸的振动件侧壁（211）以及壳体（1）沿第二振动方向延伸的壳体侧壁（13）连接，使该振动马达可实现两个方向的振动，提高振动马达的性能。

Description

一种振动马达 技术领域
本发明涉及一种振动马达，尤其涉及一种用于电子发声器件的振动马达。
 背景技术
随着电子技术的发展，移动通信终端装置如手机等的来电无声提示需要靠机身的振动来提醒用户，而产生振动的部件为内置的振动马达，另外振动按摩器等小型医疗保健设备的核心器件也为内置的振动马达。传统的振动马达，包括外壳、收容于外壳内的振动件以及弹簧，振动件和外壳均与弹簧连接，传统的弹簧由于造型的关系只能产生单个方向的振动，振动效果不明显。如需产生多个方向的振动，则需要采用多个弹簧，然而使用多个弹簧装配工序多，工艺较为复杂，难以保证装配精度，如果装配精度出现偏差，则振动马达多方向振动将达不到很好的效果。
 技术问题
本发明的目的在于提供一种振动马达，意在解决传统技术的振动马达在多方向振动时效果不好的问题。
 技术解决方案
本发明的技术方案如下：一种振动马达，包括具有收容空间的壳体、以及收容于所述收容空间内的振动件及固定件，所述振动件具有第一振动方向以及第二振动方向，所述振动件包括沿所述第一振动方向延伸的振动件侧壁，所述壳体包括沿所述第二振动方向延伸的壳体侧壁，所述振动马达还包括围设在所述振动件周围的弹性支撑件，所述弹性支撑件包括两根相对设置的第一弹性支撑臂，以及相对设置并与两根所述第一弹性支撑臂围合的两根第二弹性支撑臂，所述第一弹性支撑臂包括与所述振动件侧壁连接的第一连接部以及由所述第一连接部两端分别远离所述振动件侧壁的方向延伸的两个第一振动力臂，所述第二弹性支撑臂包括与所述壳体侧壁连接的第二连接部以及由所述第二连接部两端分别远离所述壳体侧壁的方向延伸的两个第二振动力臂，所述第一振动力臂分别与相邻的所述第二振动力臂连接。
进一步地，所述固定件包括安装在所述壳体底壁的电路板以及与所述电路板电连接并绕制于线圈支架上的第一线圈和第二线圈，所述第一线圈绕制形成的第一线圈通孔朝向所述振动件侧壁，所述第二线圈绕制形成的第二线圈通孔朝向所述壳体侧壁。
进一步地，所述振动件包括与所述弹性支撑件连接并设有容置腔的配重块、收容于所述容置腔中的磁框、与所述磁框连接并设置在所述第一线圈两端的第一磁体以及与所述磁框连接并设置在所述第二线圈两端的第二磁体，所述配重块包括沿所述第一振动方向延伸的振动件侧壁以及用于连接振动件侧壁的振动连接侧壁，所述配重块通过所述振动件侧壁与所述弹性支撑件连接。
进一步地，所述壳体包括底壁、与所述底壁相对且间隔设置的顶壁、自所述顶壁弯折延伸至所述底壁的沿所述第二振动方向延伸的壳体侧壁、以及自所述顶壁弯折延伸至所述底壁的连接所述壳体侧壁的连接侧壁。
进一步地，由所述第一连接部两端分别远离所述振动件侧壁的方向延伸的两个所述第一振动力臂的形状相同并相对所述第一连接部对称设置，由所述第二连接部两端分别远离所述振动件侧壁的方向延伸的两个所述第二振动力臂的形状相同并相对所述第二连接部对称设置。
进一步地，所述第一振动力臂与所述第二振动力臂的连接位置位于所述壳体的角部。
进一步地，所述第一振动力臂与所述振动件侧壁所成夹角大于所述第二振动力臂与所述壳体侧壁所成夹角。
进一步地，所述第一振动方向与所述第二振动方向相互垂直。
进一步地，所述弹性支撑件一体成型。
进一步地，所述线圈支架具体为铁芯。
 有益效果
本发明的有益效果在于：本发明的振动马达，包括具有收容空间的壳体、以及收容于收容空间内的振动件及固定件，其振动件可以提供两个方向的振动，即第一振动方向和第二振动方向，弹性支撑件围设在振动件周围，且分别与振动件沿第一振动方向延伸的振动件侧壁以及壳体沿第二振动方向延伸的壳体侧壁连接，使该振动马达可实现两个方向的振动，提高振动马达的性能。
 附图说明
图1为本发明实施例的振动马达的结构示意图；
图2为本发明实施例的振动马达沿A-A方向的剖视图；
图3为本发明实施例的振动马达的分解结构示意图；
图4为本发明实施例的振动马达中弹性支撑件的结构示意图；
图5为本发明实施例的振动马达中弹性支撑件另一角度的结构示意图。
 本发明的实施方式
下面结合附图和实施方式对本发明作进一步说明。
请参阅图1和图2，是本发明实施例提供的一种振动马达，包括壳体1、振动件2、固定件3以及弹性支撑件4，壳体1具有收容空间10，振动件2、固定件3和弹性支撑件4均收容于收容空间10内。其中，振动件2能够提供第一振动方向和第二振动方向两个方向的振动，振动件2包括沿第一振动方向延伸的振动件侧壁211，壳体1包括沿第二振动方向延伸的壳体侧壁13。请参阅图4和图5，弹性支撑件4围设在振动件2周围，其包括两根相对设置的第一弹性支撑臂41，以及相对设置并与两根第一弹性支撑臂41围合的两根第二弹性支撑臂42，第一弹性支撑臂41包括与振动件侧壁211连接的第一连接部411以及由第一连接部411两端分别远离振动件侧壁211的方向延伸的两个第一振动力臂412，第二弹性支撑臂42包括与壳体侧壁13连接的第二连接部421以及由第二连接部421两端分别远离壳体侧壁13的方向延伸的两个第二振动力臂422，第一振动力臂412分别与相邻的第二振动力臂422连接。该弹性支撑件4的结构以及其与振动件2、壳体1的固定方式使该振动马达能够实现两个方向的振动，提高振动马达的性能。
请参阅图2和图3，固定件3包括电路板31、线圈支架32、第一线圈33以及第二线圈34，电路板31安装在壳体的底壁11上，第一线圈33和第二线圈34与电路板31电连接并绕制于线圈支架32上，第一线圈33绕制形成第一线圈通孔，第一线圈通孔朝向振动件侧壁211，第二线圈34绕制形成第二线圈通孔，第二线圈通孔朝向壳体侧壁13。其中，线圈支架32具体可以选择铁芯，第一线圈33可通过与壳体1的顶壁12的内壁打胶进行固定。振动件2包括配重块21、磁框22、第一磁体23以及第二磁体24，配重块21与弹性支撑件4连接，其内部设有容置腔213，磁框22收容于容置腔213中，第一磁体23与磁框22连接并设置在第一线圈33两端，第二磁体24与磁框22连接并设置在第二线圈34两端。配重块21包括沿第一振动方向延伸的振动件侧壁211以及用于连接振动件侧壁211的振动连接侧壁212，配重块21通过振动件侧壁211与弹性支撑件4连接。具体地，第一线圈33和第二线圈34通过特定的绕置方式，使第一线圈通孔和第二线圈通孔的方向垂直，从而使第一振动方向和第二振动方向相互垂直。
请参阅图1和图3，壳体1包括底壁11、顶壁12、壳体侧壁13以及连接侧壁14，顶壁12与底壁11相对且间隔设置，壳体侧壁13自顶壁12弯折延伸至底壁11且沿第二振动方向延伸，连接侧壁14自顶壁12弯折延伸至底壁11并用于连接壳体侧壁13。
请参阅图4和图5，弹性支撑件4一体成型，并能够提供第一振动方向和第二振动方向两个方向工作所需的支撑刚度。由第一连接部411两端分别远离振动件侧壁211的方向延伸的两个第一振动力臂412的形状相同并相对第一连接部411对称设置，由第二连接部421两端分别远离振动件侧壁211的方向延伸的两个第二振动力臂422的形状相同并相对第二连接部421对称设置，对称的设计使马达扭转、摇摆时振动幅度大，使马达的震动效果更好。可以通过改变第一振动力臂412以及第二振动力臂422的形状来获取两个方向所需的支撑刚度值。
第一振动力臂412与第二振动力臂422的连接位置位于壳体1的角部，充分利用了振动马达的空间，有利于振动马达的微型化。第一振动力臂412与振动件侧壁211所成夹角大于第二振动力臂422与壳体侧壁13所成夹角，使第一振动方向和第二振动方向的刚度可以分别设计，设计自由度更大。
以上所述的仅是本发明的实施方式，在此应当指出，对于本领域的普通技术人员来说，在不脱离本发明创造构思的前提下，还可以做出改进，但这些均属于本发明的保护范围。

Claims (10)

  1. 一种振动马达，包括具有收容空间的壳体、以及收容于所述收容空间内的振动件及固定件，其特征在于：所述振动件具有第一振动方向以及第二振动方向，所述振动件包括沿所述第一振动方向延伸的振动件侧壁，所述壳体包括沿所述第二振动方向延伸的壳体侧壁，所述振动马达还包括围设在所述振动件周围的弹性支撑件，所述弹性支撑件包括两根相对设置的第一弹性支撑臂，以及相对设置并与两根所述第一弹性支撑臂围合的两根第二弹性支撑臂，所述第一弹性支撑臂包括与所述振动件侧壁连接的第一连接部以及由所述第一连接部两端分别远离所述振动件侧壁的方向延伸的两个第一振动力臂，所述第二弹性支撑臂包括与所述壳体侧壁连接的第二连接部以及由所述第二连接部两端分别远离所述壳体侧壁的方向延伸的两个第二振动力臂，所述第一振动力臂分别与相邻的所述第二振动力臂连接。
  2. 根据权利要求1所述的振动马达，其特征在于：所述固定件包括安装在所述壳体底壁的电路板以及与所述电路板电连接并绕制于线圈支架上的第一线圈和第二线圈，所述第一线圈绕制形成的第一线圈通孔朝向所述振动件侧壁，所述第二线圈绕制形成的第二线圈通孔朝向所述壳体侧壁。
  3. 根据权利要求2所述的振动马达，其特征在于：所述振动件包括与所述弹性支撑件连接并设有容置腔的配重块、收容于所述容置腔中的磁框、与所述磁框连接并设置在所述第一线圈两端的第一磁体以及与所述磁框连接并设置在所述第二线圈两端的第二磁体，所述配重块包括沿所述第一振动方向延伸的振动件侧壁以及用于连接振动件侧壁的振动连接侧壁，所述配重块通过所述振动件侧壁与所述弹性支撑件连接。
  4. 根据权利要求3所述的振动马达，其特征在于：所述壳体包括底壁、与所述底壁相对且间隔设置的顶壁、自所述顶壁弯折延伸至所述底壁的沿所述第二振动方向延伸的壳体侧壁、以及自所述顶壁弯折延伸至所述底壁的连接所述壳体侧壁的连接侧壁。
  5. 根据权利要求1所述的振动马达，其特征在于：由所述第一连接部两端分别远离所述振动件侧壁的方向延伸的两个所述第一振动力臂的形状相同并相对所述第一连接部对称设置，由所述第二连接部两端分别远离所述振动件侧壁的方向延伸的两个所述第二振动力臂的形状相同并相对所述第二连接部对称设置。
  6. 根据权利要求5所述的振动马达，其特征在于：所述第一振动力臂与所述第二振动力臂的连接位置位于所述壳体的角部。
  7. 根据权利要求6所述的振动马达，其特征在于：所述第一振动力臂与所述振动件侧壁所成夹角大于所述第二振动力臂与所述壳体侧壁所成夹角。
  8. 根据权利要求1所述的振动马达，其特征在于：所述第一振动方向与所述第二振动方向相互垂直。
  9. 根据权利要求1所述的振动马达，其特征在于：所述弹性支撑件一体成型。
  10. 根据权利要求2所述的振动马达，其特征在于：所述线圈支架具体为铁芯。
PCT/CN2019/089981 2019-05-31 2019-06-04 一种振动马达 Ceased WO2020237702A1 (zh)

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