WO2021007805A1 - 线性振动马达 - Google Patents

线性振动马达 Download PDF

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Publication number
WO2021007805A1
WO2021007805A1 PCT/CN2019/096354 CN2019096354W WO2021007805A1 WO 2021007805 A1 WO2021007805 A1 WO 2021007805A1 CN 2019096354 W CN2019096354 W CN 2019096354W WO 2021007805 A1 WO2021007805 A1 WO 2021007805A1
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WO
WIPO (PCT)
Prior art keywords
vibrator
magnetic
vibration motor
return
linear vibration
Prior art date
Application number
PCT/CN2019/096354
Other languages
English (en)
French (fr)
Inventor
崔志勇
汤赟
马杰
王尧
毛路斌
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/CN2019/096354 priority Critical patent/WO2021007805A1/zh
Priority to CN201921129515.6U priority patent/CN210167942U/zh
Priority to US16/995,757 priority patent/US11374476B2/en
Publication of WO2021007805A1 publication Critical patent/WO2021007805A1/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
    • H02K33/16—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with polarised armatures moving in alternate directions by reversal or energisation of a single coil system
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K41/00—Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
    • H02K41/02—Linear motors; Sectional motors
    • H02K41/035—DC motors; Unipolar motors
    • H02K41/0352—Unipolar motors
    • H02K41/0354—Lorentz force motors, e.g. voice coil motors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/08—Structural association with bearings

Definitions

  • This application relates to the field of vibration motors, and in particular to a new type of linear vibration motor.
  • Linear motors also known as linear motors, linear motors, push rod motors, etc.
  • the most commonly used linear motors are flat, U-slot and tube types. They are a technology that converts electrical energy into linear motion mechanical energy.
  • the linear motor suspends the moving element through the repulsive force of the magnet, and at the same time directly drives the moving element through the magnetic force, without the need for transmission through a transmission mechanism such as a gear set like a rotary motor. Therefore, the linear motor can make it all
  • the driven moving element performs high acceleration and deceleration reciprocating motion. With this feature, the linear motor can be used in different manufacturing and processing technology fields, and used as a driving power source or as a technical content for providing positioning.
  • a traditional linear motor uses a solid spring as a supporting structure.
  • the solid spring is used to connect the vibrator and the stator.
  • the structure of a solid spring is generally complex, requires welding or cementing, which occupies a part of the space of the device, and has limited elastic deformation. It can only move in a small stroke and is prone to reliability problems during long-term operation.
  • the main technical problem solved by this application is that when the solid spring is used as a supporting structure to connect the vibrator and the stator, it occupies a part of the space of the device, and the elastic deformation of the solid spring is limited. It can only move in small strokes, and it is easy to be reliable during long-term work. Sexual issues.
  • the present application provides a linear vibration motor that includes a housing with a housing space, a vibrator housed in the housing space, and a coil fixed to the housing to drive the vibrator.
  • the vibrator includes a magnetic circuit system, the coil is wound on the outer side of the magnetic circuit system and is arranged relatively spaced from the magnetic circuit system, and the magnetic circuit system includes a first magnetic steel and a second magnetic steel that are fixedly connected, The first magnet and the second magnet are magnetized along the movement direction of the vibrator, and the magnetic poles of the opposite faces of the first magnet and the second magnet are the same, and the linear vibration motor further includes A guide portion fixed to the housing, the vibrator is slidably connected to the guide portion, and the guide portion supports the vibrator in a direction perpendicular to the vibration direction of the vibrator; the linear vibration motor further includes a fixed In the return component of the housing, the return component is fixed on the side of the vibrator close to the first magnet, and the magnetic pole on the side close to the coil is close
  • the restoring assembly includes a first restoring member and a second restoring member located on both sides of the magnetic circuit system in a direction perpendicular to the vibration direction of the vibrator, the first restoring member and the second restoring member
  • the magnetic poles on the opposite side of the return piece are the same.
  • the restoring assembly further includes a third restoring member and a fourth restoring member located on both sides of the magnetic circuit system in another direction perpendicular to the vibration direction of the vibrator, and the third restoring member and the The magnetic poles of the opposing surfaces of the fourth return member are the same, and the first return member, the second return member, the third return member and the fourth return member form a ring and are arranged around the outer circumference of the vibrator.
  • the restoring component has a ring shape and is sleeved on the vibrator.
  • the magnetic circuit system further includes a pole core fixed between the first magnetic steel and the second magnetic steel.
  • the housing includes a first end cover and a second end cover that are arranged oppositely in the direction of movement of the vibrator, and the guide portion includes a first end cover and a second end cover installed on the first end cover and the second end cover. Between and along the movement direction of the vibrator, the vibrator is sleeved on the optical axis.
  • the vibrator further includes a mass block fixed to one end of the magnetic circuit system close to the return assembly, a first bearing is sleeved inside the mass block, and the mass block passes through the first bearing and the Sliding fit of optical axis.
  • a second bearing is sleeved in the second magnetic steel, and the second magnetic steel is slidingly fitted with the optical shaft through the second bearing.
  • the housing includes a first end cover and a second end cover located opposite to each other in the direction of movement of the vibrator, and a surrounding wall arranged around the periphery of the vibrator along the direction of vibration of the vibrator, so The surrounding wall, the first end cover and the second end cover enclose the containing space, the vibrator further includes a mass fixed to an end of the first magnetic steel away from the coil, and the guide portion It includes a guide rail protruding or recessed from the surrounding wall surface, a sliding part matched with the guide rail is correspondingly formed on the mass block, and the vibrator slides along the guide rail.
  • the guide rails are formed on opposite sides of the vibrator and correspond to the sliding parts one to one
  • the linear vibration motor provided in the present application adopts a guide part and a return component, so that one end of the linear vibration motor uses the force of a magnetic field to provide a return force to balance the vibrator, and the other end is cut by a coil.
  • the wire provides driving force to realize the large-stroke vibration of the vibrator.
  • FIG. 1 is a schematic diagram of a three-dimensional structure of a first embodiment of a linear vibration motor of this application;
  • FIG. 2 is an exploded structural diagram of the first embodiment of the linear vibration motor shown in FIG. 1;
  • FIG. 3 is a cross-sectional view of the first embodiment of the linear vibration motor shown in FIG. 1 along the line III-III;
  • Fig. 4 is a driving principle diagram of the linear vibration motor shown in this application.
  • 5 is a schematic diagram of the three-dimensional structure of the second embodiment of the application reply component
  • Figure 6 is a cross-sectional view of the recovery component shown in Figure 5 along line VI-VI;
  • FIG. 7 is a schematic diagram of the three-dimensional structure of the third embodiment of the application reply component.
  • Figure 8 is a cross-sectional view of the recovery assembly shown in Figure 7 along line VIII-VIII;
  • FIG. 9 is a schematic diagram of an exploded structure of the second embodiment of the linear vibration motor of this application.
  • FIG. 10 is a cross-sectional view along line X-X of the second embodiment of the linear vibration motor shown in FIG. 9;
  • FIG. 11 is a partial three-dimensional structure diagram and a detailed view of the second embodiment of the linear vibration motor shown in FIG. 10.
  • FIG. 1 is a schematic diagram of the three-dimensional structure of the linear vibration motor 100 shown in this application
  • FIG. 2 is an exploded schematic diagram of the linear vibration motor 100 shown in FIG. 1
  • FIG. 3 is a diagram shown in FIG. A cross-sectional view of the first embodiment of the linear vibration motor along the line III-III.
  • the linear vibration motor 100 includes a housing 11 having a housing space, a vibrator 12 housed in the housing space, a coil 13 fixed to the housing 11 for driving the vibrator 12, and a coil 13 fixed to the housing
  • the housing 11 includes a first end cover 111 and a second end cover 112 that are located opposite to each other in the direction of movement of the vibrator 12, and connects the first end cover 111 and the second end cover 112 and surrounds them. As the enclosure 113 of the containing space.
  • the vibrator 12 includes a magnetic circuit system 121, a mass 122, a first bearing 123 and a second bearing 124.
  • the magnetic circuit system 121 includes a first magnetic steel 1211, a second magnetic steel 1212 and a pole core 1213 that are fixedly connected.
  • the first magnet 1211 and the second magnet 1212 are magnetized along the moving direction of the vibrator 12, and the magnetic poles of the opposite faces of the first magnet 1211 and the second magnet 1212 are the same.
  • the pole core 1213 is fixed between the first magnetic steel 1211 and the second magnetic steel 1212.
  • the mass block 122 is fixed to an end of the magnetic circuit system 121 close to the return assembly 15, and the mass block 122 is connected to the first magnetic steel 1211.
  • the first bearing 123 is sleeved inside the mass 122
  • the second bearing 124 is sleeved inside the second magnetic steel 1212.
  • the coil 13 is wound on the outer side of the magnetic circuit system 121 and is arranged opposite to the magnetic circuit system 121.
  • the guide portion 14 includes an optical axis 141 installed between the first end cover 111 and the second end cover 112 and arranged along the movement direction of the vibrator 12, and the vibrator 12 is sleeved on the optical axis 141. ⁇ 141.
  • the mass 122 is slidingly fitted with the optical shaft 141 through the first bearing 123.
  • the second magnetic steel 1212 is slidingly fitted with the optical shaft 141 through the second bearing 124.
  • the optical shaft 141 slidably connects the first bearing 123, the mass 122, the first magnetic steel 1211, the pole core 1213, the second magnetic steel 1212, and the second bearing 124 in sequence.
  • the restoring assembly 15 includes a first restoring member 151 and a second restoring member 152 located on both sides of the magnetic circuit system 121 in a direction perpendicular to the vibration direction of the vibrator 12, the first restoring member 151 and the second restoring member 152 respectively.
  • the opposite magnetic poles of the second return member 152 are the same.
  • the return component 15 is fixed on the side of the vibrator 12 close to the first magnet 1211, and the magnetic pole on the side of the return component 15 close to the coil 13 and the first magnet 1211 close to the second
  • the magnetic poles at one end of the magnetic steel 1212 are the same, the magnetic force between the return assembly 15 and the magnetic circuit system 121 provides a return force for the vibrator 12, and the center of mass of the vibrator 12 when the vibrator 12 is in the equilibrium position Located between the recovery component 15 and the coil 13.
  • the magnetizing direction of the return assembly 15 is perpendicular to the magnetizing direction of the first magnet 1211, and when the vibrator 12 is in the equilibrium position, along the sliding direction perpendicular to the mass 122, the The orthographic projection of the first magnetic steel 1211 and the restoration component 15 on the optical axis 141 at least partially overlaps.
  • FIG. 4 is a driving principle diagram of the linear vibration motor 100 described in this application.
  • the driving principle diagram shows the magnetic field of the magnetic steel.
  • the polarities of the first magnetic steel 1211 and the second magnetic steel 1212 are opposite to each other, and the magnetizing direction of the return assembly 15 is the same as that of the first magnet 1211.
  • the orthographic projection of the first magnet 1211 and the return assembly 15 on the optical axis 141 is at least partially overlapping.
  • the current direction of the coil 13 is shown in the figure, and the coil 13 receives a rightward force F, the vibrator 12 moves to the left.
  • the vibrator 12 moves to the right.
  • the first magnetic steel 1211 of the vibrator 12 is attracted by the return assembly 15 so that the vibrator 12 maintains a balance in the middle position of the return assembly 15.
  • the vibrator 12 moves left and right, it is affected by the suction force of the return assembly 15, and the suction force has the same effect as the return force of the spring.
  • FIG. 5 is a schematic diagram of the three-dimensional structure of the second embodiment of the recovery component of this application
  • FIG. 6 is a cross-sectional view of the recovery component shown in FIG. 5 along the line VI-VI.
  • the restoring assembly 15 further includes a third restoring member 153 and a fourth restoring member 154 located on both sides of the magnetic circuit system 121 along another direction perpendicular to the vibration direction of the vibrator 12.
  • the magnetic poles of the opposite sides of the third return piece 153 and the fourth return piece 154 are the same, and the first return piece 151, the second return piece 152, the third return piece 153 and the fourth return piece
  • the member 154 is enclosed in a ring shape and is arranged around the outer circumference of the vibrator 12.
  • FIG. 7 is a schematic diagram of a three-dimensional structure of a third embodiment of the recovery component of this application
  • FIG. 8 is a cross-sectional view of the recovery component shown in FIG. 7 along the line VIII-VIII.
  • the restoring component 15 has a ring shape and is sleeved on the vibrator 12.
  • FIG. 9 is an exploded structure diagram of the second embodiment of the linear vibration motor of this application
  • FIG. 10 is a cross-sectional view of the second embodiment of the linear vibration motor shown in FIG. 9 along line XX 11 is a partial three-dimensional schematic diagram of the second embodiment of the linear vibration motor shown in FIG. 10 and a detailed view thereof.
  • the second embodiment is basically the same as the first embodiment, and the definition symbols are the same. Only the differences are listed below.
  • the guide portion 14 is a guide rail 142.
  • the housing 11 includes a first end cover 111 and a second end cover 112 located opposite to each other in the direction of movement of the vibrator 12, and a surrounding wall arranged around the periphery of the vibrator along the vibration direction of the vibrator 12 116.
  • the surrounding wall 116, the first end cover 111 and the second end cover 112 enclose the receiving space.
  • the guide portion 14 includes a guide rail 142 formed from the surface of the surrounding wall 116 protruding or recessed, the mass 122 is correspondingly formed with a sliding portion 1221 that cooperates with the guide rail, and the vibrator 12 slides along the guide rail 142 .
  • a lubricant can be added to the guide rail 142 to reduce the friction force when the vibrator 12 slides.
  • the guide rails 142 are formed on opposite sides of the vibrator 12 and correspond to the sliding portion 1221 one to one.
  • the linear vibration motor provided by the present application is provided with the guide portion 14 and the return assembly 15, so that one end of the linear vibration motor 100 uses the force of the magnetic field to provide the vibrator 12 with a restoring force during operation.
  • One end of the coil 13 cuts the magnetic induction line to provide driving force, and the vibrator 12 can realize large-stroke vibration.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Electromagnetism (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)

Abstract

本申请提供一种线性振动马达。其包括具有收容空间的壳体、以及收容于所述收容空间的振子、固定于所述壳体的驱动所述振子运动的线圈、固定于所述壳体的引导部和回复组件。所述振子包括第一磁钢和第二磁钢，所述引导部沿垂直于所述振子的振动方向的方向支撑所述振子并滑动连接。所述回复组件固定于所述振子一侧，所述回复组件靠近所述线圈一侧的磁极与所述第一磁钢靠近所述第二磁钢一端的磁极相同，所述回复组件与所述振子之间的磁作用力为所述振子提供回复力，并且所述振子处于平衡位置时所述振子的质心位于所述回复组件与所述线圈之间。本申请提供的线性振动马达利用磁场作用力给振子提供回复力，实现所述振子大行程振动。

Description

线性振动马达 技术领域
本申请涉及振动马达领域，尤其涉及一种新型线性振动马达。
 背景技术
线性马达，也称线性电机、直线马达、推杆马达等，最常用的线性马达类型是平板式、U型槽式和管式，是一种将电能转换为直线运动机械能的技术。所述线性马达通过磁铁的相斥力使移动元件悬浮，同时通过磁力直接驱动该移动元件，而无需如回转式马达般尚需经由如齿轮组等传动机构进行传动，因此，线性马达可以令其所驱动的移动元件进行高加、减速的往复运动，通过该特性，线性马达可以被应用于不同的制造加工技术领域中，而被作为驱动的动力源或作为提供定位的技术内容。此外，随着半导体、电子、光电、医疗设备及自动化控制等工业的快速发展及激烈竞争，各领域对于马达线性运动性能的要求也日渐升高，期望马达具有高速度、低噪音及高定位精度等，故在许多应用场合下都已使用线性马达来取代传统伺服马达等机械式的运动方式。
传统的线性马达是以实体弹簧作为支撑结构，所述实体弹簧用于连接振子和定子，弹簧结构种类和样式较多，主要起到连接和导向作用。然而实体弹簧的结构一般较复杂，需要焊接或胶结，会占据器件的一部分空间，且弹性变形量有限，只能在小行程运动，而且在长期工作时易出现可靠性问题等。
因此，有必要提供一种新型线性振动马达。
 技术问题
本申请主要解决的技术问题是实体弹簧作为支撑结构连接振子和定子时会占据器件的一部分空间，且实体弹簧的弹性变形量有限，只能在做小行程运动，而且在长期工作时易出现可靠性问题。
 技术解决方案
为了解决上述技术问题，本申请提供的一种线性振动马达，包括具有收容空间的壳体、以及收容于所述收容空间的振子和固定于所述壳体的驱动所述振子运动的线圈，所述振子包括磁路系统，所述线圈绕置于所述磁路系统的外侧并与所述磁路系统相对间隔设置，所述磁路系统包括固定连接的第一磁钢和第二磁钢，所述第一磁钢和所述第二磁钢沿所述振子的运动方向充磁，且所述第一磁钢和所述第二磁钢相对面的磁极相同，所述线性振动马达还包括固定于所述壳体的引导部，所述振子与所述引导部可滑动连接，所述引导部沿垂直于所述振子的振动方向的方向支撑所述振子；所述线性振动马达还包括固定于所述壳体的回复组件，所述回复组件固定于所述振子靠近所述第一磁钢的一侧，所述回复组件靠近所述线圈一侧的磁极与所述第一磁钢靠近所述第二磁钢一端的磁极相同，所述回复组件与所述磁路系统之间的磁作用力为所述振子提供回复力，并且所述振子处于平衡位置时所述振子的质心位于所述回复组件与所述线圈之间。
优选的，所述回复组件包括沿垂直于所述振子的振动方向的方向分别位于所述磁路系统两侧的第一回复件和第二回复件，所述第一回复件和所述第二回复件相对面的磁极相同。
优选的，所述回复组件还包括沿垂直于所述振子的振动方向的另一方向分别位于所述磁路系统两侧的第三回复件和第四回复件，所述第三回复件和所述第四回复件相对面的磁极相同，所述第一回复件、所述第二回复件、所述第三回复件和所述第四回复件围成环形并绕设于所述振子外周。
优选的，所述回复组件呈环形并套设于所述振子。
优选的，所述磁路系统还包括固定于所述第一磁钢和所述第二磁钢之间的极芯。
优选的，所述壳体包括位于所述振子的运动方向上的相对设置的第一端盖和第二端盖，所述引导部包括安装在所述第一端盖和所述第二端盖之间且沿所述振子的运动方向设置的光轴，所述振子套设于所述光轴。
优选的，所述振子还包括固定于所述磁路系统靠近所述回复组件一端的质量块，所述质量块内部套接有第一轴承，所述质量块通过所述第一轴承与所述光轴滑动配合。
优选的，所述第二磁钢内套接有第二轴承，所述第二磁钢通过所述第二轴承与所述光轴滑动配合。
优选的，所述壳体包括位于所述振子的运动方向上的相对设置的第一端盖和第二端盖、以及沿所述振子的振动方向绕设于所述振子外周的围壁，所述围壁与所述第一端盖及所述第二端盖围成所述收容空间，所述振子还包括固定于所述第一磁钢远离所述线圈一端的质量块，所述引导部包括自所述围壁面凸起或凹陷形成的导轨，所述质量块上对应形成与所述导轨配合的滑动部，所述振子沿所述导轨滑动。
优选的，所述导轨形成于所述振子的相对两侧并与所述滑动部一一对应
 有益效果
相较于相关技术，本申请提供的线性振动马达取通过设置引导部和回复组件，使得工作时所述线性振动电机的一端利用磁场作用力提供回复力使振子平衡，另一端由线圈切割磁感线提供驱动力，实现所述振子的大行程振动。
 附图说明
为了更清楚地说明本申请实施例中的技术方案，下面将对实施例描述中所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申请的一些实施例，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为本申请的线性振动马达第一实施例的立体结构示意图；
图2为图1所示的线性振动马达第一实施例的分解结构示意图；
图3为图1所示的线性振动马达第一实施例沿III-III线的剖视图；
图4为本申请所示的线性振动马达的驱动原理图；
图5为本申请回复组件第二实施例的立体结构示意图；
图6为图5所示回复组件沿VI-VI线的剖视图；
图7为本申请回复组件第三实施例的立体结构示意图；
图8为图7所示回复组件沿VIII-VIII线的剖视图；
图9为本申请的线性振动马达第二实施例的分解结构示意图；
图10为图9所示的线性振动马达第二实施例沿X-X线的剖视图；
图11为图10所示的线性振动马达第二实施例的部分立体结构示意图及其细节图。
 本发明的最佳实施方式
下面将对本申请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申请的一部分实施例，而不是全部的实施例。基于本申请中的实施例，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，都属于本申请保护的范围。
实施例一
请结合参阅图1至图3，图1为本申请所示的线性振动马达100的立体结构示意图，图2为图1所示的线性振动马达100的分解示意图，图3为图1所示的线性振动马达的第一实施例沿III-III线的剖视图。
所述线性振动马达100包括具有收容空间的壳体11、以及收容于所述收容空间的振子12、固定于所述壳体11的驱动所述振子12运动的线圈13、固定于所述壳体11的引导部14、固定于所述壳体11的回复组件15和柔性电路板16。
所述壳体11包括位于所述振子12的运动方向上的相对设置的第一端盖111和第二端盖112，以及连接所述第一端盖111和所述第二端盖112并围成所述收容空间的围筒113。
所述振子12包括磁路系统121、质量块122、第一轴承123和第二轴承124。所述磁路系统121包括固定连接的第一磁钢1211、第二磁钢1212和极芯1213。所述第一磁钢1211和所述第二磁钢1212沿所述振子12的运动方向充磁，且所述第一磁钢1211和所述第二磁钢1212相对面的磁极相同。所述极芯1213固定于所述第一磁钢1211和所述第二磁钢1212之间。所述质量块122固定于所述磁路系统121靠近所述回复组件15的一端，所述质量块122与所述第一磁钢1211相连接设置。所述第一轴承123套接于所述质量块122内部，所述第二轴承124套接于所述第二磁钢1212内。
所述线圈13绕置于所述磁路系统121的外侧并与所述磁路系统121相对间隔设置。
所述引导部14包括安装在所述第一端盖111和所述第二端盖112之间且沿所述振子12的运动方向设置的光轴141，所述振子12套设于所述光轴141。所述质量块122通过所述第一轴承123与所述光轴141滑动配合。所述第二磁钢1212通过所述第二轴承124与所述光轴141滑动配合。所述光轴141依次滑动连接所述第一轴承123、所述质量块122、所述第一磁钢1211、所述极芯1213、所述第二磁钢1212和所述第二轴承124。
所述回复组件15包括沿垂直于所述振子12的振动方向的方向分别位于所述磁路系统121两侧的第一回复件151和第二回复件152，所述第一回复件151和所述第二回复件152相对面的磁极相同。
所述回复组件15固定于所述振子12靠近所述第一磁钢1211的一侧，所述回复组件15靠近所述线圈13一侧的磁极与所述第一磁钢1211靠近所述第二磁钢1212一端的磁极相同，所述回复组件15与所述磁路系统121之间的磁作用力为所述振子12提供回复力，并且所述振子12处于平衡位置时所述振子12的质心位于所述回复组件15与所述线圈13之间。
特别的，所述回复组件15的充磁方向与所述第一磁钢1211的充磁方向相垂直，所述振子12处于平衡位置时，沿垂直于所述质量块122的滑动方向，所述第一磁钢1211与所述回复组件15在所述光轴141面上的正投影至少部分重叠。
请参阅图4，图4为本申请所述的线性振动马达100的驱动原理图。驱动原理图为磁钢磁场，所述第一磁钢1211与所述第二磁钢1212的极性相对设置，所述回复组件15的充磁方向与所述第一磁钢1211的充磁方向相垂直，所述振子12处于平衡位置时，沿垂直于所述质量块122的滑动方向，所述第一磁钢1211与所述回复组件15在所述光轴141面上的正投影至少部分重叠。当所述线圈13的电流方向如图所示，所述线圈13受向右的力F，则所述振子12做向左运动。同理，当所述线圈13通反向电流时，所述振子12做向右运动。所述振子12的第一磁钢1211受所述回复组件15的吸引力，使得所述振子12在所述回复组件15的中间位置保持平衡。当所述振子12向左右运动时受所述回复组件15的吸力作用，所述吸力作用起到和弹簧的回复力相同的效果。
请结合参阅图5和图6，图5为本申请回复组件第二实施例的立体结构示意图，图6为图5所示回复组件沿VI-VI线的剖视图。在本实施例中，所述回复组件15还包括沿垂直于所述振子12的振动方向的另一方向分别位于所述磁路系统121两侧的第三回复件153和第四回复件154。所述第三回复件153和所述第四回复件154相对面的磁极相同，所述第一回复件151、所述第二回复件152、所述第三回复件153和所述第四回复件154围成环形并绕设于所述振子12外周。
请结合参阅图7和图8，图7为本申请回复组件第三实施例的立体结构示意图，图8为图7所示回复组件沿VIII-VIII线的剖视图。在本实施例中，所述回复组件15呈环形并套设于所述振子12。
实施例二
请结合参阅图9、图10和图11，图9为本申请的线性振动马达第二实施例的分解结构示意图，图10为图9所示的线性振动马达第二实施例沿X-X线的剖视图，图11为图10所示的线性振动马达第二实施例的部分立体结构示意图及其细节图。第二实施例与第一实施例中基本相同，定义符号一致，以下只列出不同点。在本实施例中，所述引导部14为导轨142。所述壳体11包括位于所述振子12的运动方向上的相对设置的第一端盖111和第二端盖112、以及沿所述振子12的振动方向绕设于所述振子外周的围壁116，所述围壁116与所述第一端盖111及所述第二端盖112围成所述收容空间。所述引导部14包括自所述围壁116面凸起或凹陷形成的导轨142，所述质量块122上对应形成与所述导轨配合的滑动部1221，所述振子12沿所述导轨142滑动。当所述线性振动电机100工作时可以在所述导轨142上加入润滑剂，减少所述振子12滑动时的摩擦力。
特别的，所述导轨142形成于所述振子12的相对两侧并与所述滑动部1221一一对应。
相较于相关技术，本申请提供的线性振动马达通过设置所述引导部14和所述回复组件15，使得工作时所述线性振动电机100的一端利用磁场作用力给振子12提供回复力，另一端线圈13切割磁感线提供驱动力，所述振子12可实现大行程振动。
以上所述仅为本申请的实施例，并非因此限制本申请的专利范围，凡是利用本申请说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其它相关的技术领域，均同理包括在本申请的专利保护范围内。
 本发明的实施方式
在此处键入本发明的实施方式描述段落。
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Claims (10)

  1. 一种线性振动马达，包括具有收容空间的壳体、以及收容于所述收容空间的振子和固定于所述壳体的驱动所述振子运动的线圈，所述振子包括磁路系统，所述线圈绕置于所述磁路系统的外侧并与所述磁路系统相对间隔设置，所述磁路系统包括固定连接的第一磁钢和第二磁钢，所述第一磁钢和所述第二磁钢沿所述振子的运动方向充磁，且所述第一磁钢和所述第二磁钢相对面的磁极相同，其特征在于，所述线性振动马达还包括固定于所述壳体的引导部，所述振子与所述引导部可滑动连接，所述引导部沿垂直于所述振子的振动方向的方向支撑所述振子；所述线性振动马达还包括固定于所述壳体的回复组件，所述回复组件固定于所述振子靠近所述第一磁钢的一侧，所述回复组件靠近所述线圈一侧的磁极与所述第一磁钢靠近所述第二磁钢一端的磁极相同，所述回复组件与所述磁路系统之间的磁作用力为所述振子提供回复力，并且所述振子处于平衡位置时所述振子的质心位于所述回复组件与所述线圈之间。
  2. 根据权利要求1所述的线性振动马达，其特征在于，所述回复组件包括沿垂直于所述振子的振动方向的方向分别位于所述磁路系统两侧的第一回复件和第二回复件，所述第一回复件和所述第二回复件相对面的磁极相同。
  3. 根据权利要求2所述的线性振动马达，其特征在于，所述回复组件还包括沿垂直于所述振子的振动方向的另一方向分别位于所述磁路系统两侧的第三回复件和第四回复件，所述第三回复件和所述第四回复件相对面的磁极相同，所述第一回复件、所述第二回复件、所述第三回复件和所述第四回复件围成环形并绕设于所述振子外周。
  4. 根据权利要求1所述的线性振动马达，其特征在于，所述回复组件呈环形并套设于所述振子。
  5. 根据权利要求1-4任一项所述的线性振动马达，其特征在于，所述磁路系统还包括固定于所述第一磁钢和所述第二磁钢之间的极芯。
  6. 根据权利要求5所述的线性振动马达，其特征在于，所述壳体包括位于所述振子的运动方向上的相对设置的第一端盖和第二端盖，所述引导部包括安装在所述第一端盖和所述第二端盖之间且沿所述振子的运动方向设置的光轴，所述振子套设于所述光轴。
  7. 根据权利要求6所述的线性振动马达，其特征在于，所述振子还包括固定于所述磁路系统靠近所述回复组件一端的质量块，所述质量块内部套接有第一轴承，所述质量块通过所述第一轴承与所述光轴滑动配合。
  8. 根据权利要求7所述的线性振动马达，其特征在于，所述第二磁钢内套接有第二轴承，所述第二磁钢通过所述第二轴承与所述光轴滑动配合。
  9. 根据权利要求5所述的线性振动马达，其特征在于，所述壳体包括位于所述振子的运动方向上的相对设置的第一端盖和第二端盖、以及沿所述振子的振动方向绕设于所述振子外周的围壁，所述围壁与所述第一端盖及所述第二端盖围成所述收容空间，所述振子还包括固定于所述第一磁钢远离所述线圈一端的质量块，所述引导部包括自所述围壁面凸起或凹陷形成的导轨，所述质量块上对应形成与所述导轨配合的滑动部，所述振子沿所述导轨滑动。
  10. 根据权利要求9所述的线性振动马达，其特征在于，所述导轨形成于所述振子的相对两侧并与所述滑动部一一对应。
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