WO2022067929A1 - 线性马达 - Google Patents

线性马达 Download PDF

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Publication number
WO2022067929A1
WO2022067929A1 PCT/CN2020/124239 CN2020124239W WO2022067929A1 WO 2022067929 A1 WO2022067929 A1 WO 2022067929A1 CN 2020124239 W CN2020124239 W CN 2020124239W WO 2022067929 A1 WO2022067929 A1 WO 2022067929A1
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WO
WIPO (PCT)
Prior art keywords
vibrator assembly
damping member
linear motor
vibrator
assembly
Prior art date
Application number
PCT/CN2020/124239
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English (en)
French (fr)
Inventor
马杰
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
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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
Publication of WO2022067929A1 publication Critical patent/WO2022067929A1/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
    • 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
    • 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

Definitions

  • the present application relates to the technical field of electromagnetic motion, in particular to a linear motor.
  • the traditional linear motor provides support and restoring force through the springs at both ends of the vibrator.
  • the existing design can only control the vibration range of the vibrator from the direction of the vibrator.
  • the upper control of the vibration range of the vibrator cannot control the vibration range of the vibrator in the direction deviated from the vibration direction when the vibrator vibrates away from the vibration direction.
  • the purpose of the present application is to provide a linear motor to solve the technical problem that the conventional linear motor cannot control the vibration range of the vibrator in both the vibration direction and the direction deviating from the vibration direction.
  • a linear motor includes a housing with an accommodation space, a vibrator assembly suspended in the accommodation space by an elastic member, and a stator assembly fixedly connected with the casing, the vibrator assembly can follow the direction of the vibrator assembly.
  • the vibration direction vibrates back and forth
  • the elastic member can provide restoring force for the vibrator assembly
  • the elastic member includes an elastic arm and a first end and a second end respectively bent and extended in the same direction from both ends of the elastic arm, The first end is connected to the vibrator assembly, the second end is connected to the housing, the linear motor further includes a first damping member and a second damping member, the first damping member is arranged on the The first damping member is arranged between the elastic arm and the vibrator assembly or the first damping member is arranged between the elastic arm and the housing, and the second damping member is arranged between the first end and the vibrator assembly or all the The second damping member is disposed between the first end and the housing.
  • the first damping member is located between the elastic arm and the vibrator assembly.
  • a plug portion is provided on the first damping member, and a plug slot matched with the plug portion is provided on the vibrator assembly.
  • the second damping member is located between the first end and the vibrator assembly.
  • the first damping member is fixedly connected to the elastic arm and the vibrator assembly, respectively, and the second damping member is fixed to the first end and the vibrator assembly, respectively connect.
  • the number of the elastic members is two, and the two elastic members are disposed opposite to both ends of the vibrator assembly along the vibration direction.
  • the spring arm includes a first bent portion connected to the first end and a second bent portion connected to the second end.
  • the stiffness of the first kink is less than the stiffness of the second kink.
  • the arc of the first bending portion is greater than the arc of the second bending portion.
  • two stoppers are further accommodated in the accommodation space, and the two stoppers are arranged opposite to each other along the vibration direction and correspond to two ends of the vibrator assembly one by one,
  • the vibrator assembly is provided with an avoidance groove that avoids the stopper.
  • the above-mentioned linear motor adopts the first damping member arranged between the elastic arm and the vibrator assembly or the first damping member is arranged between the elastic arm and the housing, so that the first damping member can provide the vibrator assembly to work in the vibration direction of the vibrator assembly
  • the second damping member is arranged between the first end and the vibrator assembly or the second damping member is arranged between the first end and the housing, so that the second damping member can provide the vibrator assembly in the direction of deviating vibration.
  • the damping in the direction can effectively suppress the polarization of the vibrator assembly during vibration, and further control the vibration range of the vibrator assembly in the vibration direction and the direction deviating from the vibration direction.
  • FIG. 1 is a schematic diagram of the spatial structure of a linear motor in an embodiment of the present application
  • Fig. 2 is the exploded schematic diagram of the linear motor shown in Fig. 1;
  • FIG. 3 is a front view of the linear motor shown in FIG. 1 after removing the upper cover;
  • FIG. 4 is a front view of the linear motor shown in FIG. 1 with the lower cover removed.
  • the linear motor 10 includes a housing 100 , an elastic member 200 , a vibrator assembly 300 , a stator assembly 400 and a circuit board 500 .
  • the casing 100 has a receiving space 101 .
  • the housing 100 includes an upper cover 110 and a lower cover 120 disposed opposite to each other, and a circumferential side wall 130 located between the upper cover 110 and the lower cover 120 .
  • the upper cover 110 , the lower cover 120 and the circumferential side wall 130 are surrounded to form a receiving space 101 .
  • the upper cover 110 and the circumferential side wall 130 are connected by snap connection.
  • a connecting protrusion 131 is provided on the side of the circumferential side wall 130 opposite to the upper cover 110 , and a connecting groove 111 matching the connecting protrusion 131 is provided on the circumferential direction of the upper cover 110 .
  • the connecting protrusion 131 is accommodated in the connecting groove 111 and It is snapped with the upper cover 110 .
  • the upper cover 110 and the circumferential side wall 130 may also be integrated into one body by means of bonding or ultrasonic welding.
  • the circumferential side wall 130 and the lower cover 120 may be connected as a whole by means of clipping, bonding or ultrasonic welding.
  • the vibrator assembly 300 is suspended in the accommodating space 101 by the elastic member 200 and can vibrate back and forth along the vibration direction of the vibrator assembly 300 .
  • the elastic member 200 can provide restoring force for the vibrator assembly 300 .
  • the vibrator assembly 300 is arranged around the stator assembly 400 .
  • the vibrator assembly 300 includes a mass block 310 , a magnetic steel 320 and a magnetic bowl 330 .
  • the mass block 310 is provided with a through hole 311 for accommodating the stator assembly 400 .
  • the number of magnetic steels 320 is four, including two magnetic steels 320 arranged oppositely along the vibration direction of the vibrator assembly 300 , and two magnetic steels 320 arranged oppositely along the polarization direction of the vibrator assembly 300 .
  • the steel 320 is received in the through hole 311 and the ring is set in the stator assembly 400 .
  • the magnetic bowl 330 is a split structure, including four magnetic bowl sub-sections 331 corresponding to the four magnetic steels 320 one-to-one.
  • the magnetic bowl sub-sections 331 are disposed on the side of the magnetic steel 320 away from the stator assembly 400 and
  • the magnetic steel 320 is fixed on the mass block 310 .
  • the stator assembly 400 is fixedly connected with the housing 100 .
  • the stator assembly 400 includes a drive coil 410 and a coil former 420 .
  • the driving coil 410 is wound on the coil frame 420 and fixed on the casing 100 through the coil frame 420 .
  • the circuit board 500 is used to transmit electrical energy to the stator assembly 400 so that the stator assembly 400 can generate a magnetic field.
  • the circuit board 500 is attached to the side of the lower cover 120 close to the circumferential side wall 130 and is electrically connected to the driving coil 410 through the circumferential side wall 130 , so that the driving coil 410 is energized and a magnetic field is generated.
  • the magnetic field generated by the driving coil 410 interacts with the magnetic field generated by the magnetic steel 320 , thereby driving the vibrator assembly 300 to vibrate back and forth in the vibration direction in the receiving space 101 .
  • the number of the elastic members 200 is two, and the two elastic members 200 are oppositely disposed at both ends of the vibrator assembly 300 along the vibration direction.
  • the elastic member 200 is an elastic sheet 200 .
  • the elastic member 200 includes an elastic arm 210 and a first end 220 and a second end 230 that are bent and extended from both ends of the elastic arm 210 in the same direction, respectively.
  • the first end 220 is connected to the vibrator assembly 300
  • the second end 230 is connected to The housing 100 is connected.
  • the first end 220 is clamped on the mass block 310 by the first fixing member 600
  • the second end 230 is clamped on the circumferential side wall 130 by the second fixing member 700 .
  • the elastic arm 210 includes a first bending part 211 connected with the first end 220 and a second bending part 212 connected with the second end 230 .
  • the linear motor 10 further includes a first damping member 800 and a second damping member 900 .
  • the first damping member 800 is disposed between the elastic arm 210 and the vibrator assembly 300
  • the second damping member 900 is disposed between the first end 220 and the vibrator assembly 300 .
  • the first damping member 800 is disposed between the elastic arm 210 and the vibrator assembly 300, and the second damping member 900 is disposed between the first end 220 and the housing 100 along the polarization direction, or the first The damping member 800 is arranged between the elastic arm 210 and the housing 100 , the second damping member 900 is arranged between the first end 220 and the vibrator assembly 300 , or the first damping member 800 is arranged between the elastic arm 210 and the housing 100 , the second damping member 900 is disposed between the first end 220 and the housing 100 .
  • the first damping member 800 is disposed between the elastic arm 210 and the vibrator assembly 300 or the first damping member 800 is disposed between the elastic arm 210 and the housing 100, so that the first damping member 800 can provide the vibrator assembly
  • the second damping member 900 is arranged between the first end 220 and the vibrator assembly 300 or the second damping member 900 is arranged between the first end 220 and the housing 100, so that the first The two damping members 900 can provide the damping of the vibrator assembly 300 in the direction deviating from the vibration direction, effectively suppress the polarization of the vibrator assembly 300 during vibration, and further control the vibration range of the vibrator assembly 300 in the vibration direction and the direction deviating from the vibration direction.
  • the vibration direction is parallel to the direction indicated by the arrow X in FIG. 1
  • the direction deviating from the vibration direction is parallel to the direction indicated by the arrow Y in FIG. 1 .
  • the first damping member 800 is located between the elastic arm 210 and the vibrator assembly 300 .
  • the first damping member 800 is provided with a plug portion 810
  • the vibrator assembly 300 is provided with a plug slot 312 matching the plug portion 810 .
  • the insertion of the insertion portion 810 into the insertion slot 312 can increase the connection area between the first damping member 800 and the vibrator assembly 300 , further improve the connection stability between the first damping member 800 and the vibrator assembly 300 , and further improve the first damping
  • the precise control of the vibration range of the vibrator assembly 300 by the component 800 is provided.
  • the first damping member 800 includes the above-mentioned plug portion 810 and a body 820 integrally connected with the plug portion 810 . The two opposite sides of the body 820 along the vibration direction are respectively attached to the second branch 220 and the mass block 310 , so as to improve the control accuracy of the vibration range of the vibrator assembly 300 .
  • first damping member 800 is fixedly connected to the elastic arm 210 and the vibrator assembly 300 respectively.
  • the second damping member 900 is located between the first end 220 and the vibrator assembly 300 .
  • the second damping member 900 is fixedly connected to the first end 220 and the vibrator assembly 300 respectively.
  • the first damping member 800 and the second damping member 900 and the elastic member can be changed by changing the The connection area between 200 and the vibrator assembly 300, the materials of the first damping member 800 and the second damping member 900, and the shapes of the first damping member 800 and the second damping member 900, so as to change the vibration range of the vibrator assembly 300, so that The vibration range is adjustable.
  • the material of the first damping member 800 and the second damping member 900 may be foam or damping glue, and the first damping member 800 and the second damping member 900 may be pre-shaped or directly filled in the elastic member 200 and the vibrator. Made between components 300.
  • the rigidity of the first bending portion 211 is smaller than the rigidity of the second bending portion 212 .
  • the first damping member 800 and the second damping member 900 are located on both sides of the first bending portion 211 , which can improve the stiffness near the first bending portion 211 , improve the vibration stability of the vibrator assembly 300 , and reduce the vibration of the vibrator assembly. 300 polarization.
  • the arc of the first bending portion 211 is greater than the arc of the second bending portion 212 . That is, the elastic member 200 has a U-like shape. Since the curvature of the first bending part 211 is larger than that of the second bending part 212, the rigidity of the part of the elastic member 200 near the first bending part 211 is relatively small, and the first damping member 800 and the second damping member 900 are located in the On both sides of a bending portion 211 , the stiffness near the first bending portion 211 can be improved, the vibration stability of the vibrator assembly 300 can be improved, and the polarization of the vibrator assembly 300 can be reduced.
  • two stoppers 140 are also accommodated in the accommodation space 101 .
  • the stopper 140 is fixedly connected with the lower cover 120 . Further, the two stoppers 140 are disposed opposite to each other along the vibration direction and correspond to two ends of the vibrator assembly 300 one-to-one.
  • the vibrator assembly 300 is provided with an escape groove 313 for avoiding the stopper 140 .
  • the stopper 140 and the avoidance groove 313 are spaced apart.
  • the stopper 140 blocks the mass 310 to effectively avoid performance degradation caused by excessive deformation of the elastic piece 200 .
  • the elastic arm 210 is provided with an arc-shaped notch 213 , and the arc-shaped notch 213 is used to avoid the stopper 140 .
  • the number of arc-shaped notches 213 is two, and they are located on opposite sides of the elastic arm 210 respectively.

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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)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)

Abstract

一种线性马达（10），包括具有收容空间（101）的壳体（100），通过弹性件（200）悬置于收容空间（101）内的振子组件（300）以及与壳体（100）固定连接的定子组件，线性马达还包括第一阻尼件（800）和第二阻尼件（900）。上述线性马达，将第一阻尼件（800）设置在弹力臂（210）和振子组件（300）之间或第一阻尼件（800）设置在弹力臂（210）和壳体（100）之间，使得第一阻尼件（800）能够提供振子组件（300）在振子组件（300）的振动方向上工作所需的阻尼；将第二阻尼件（900）设置在第一端（220）和振子组件（300）之间或第二阻尼件（900）设置在第一端（220）和壳体（100）之间，使得第二阻尼件（900）能够提供振子组件（300）在偏离振动方向的方向上的阻尼，有效抑制振子组件（300）在振动时的偏振，进而兼顾控制振子组件（300）在振动方向和偏离振动方向的方向上的振动范围。

Description

线性马达 技术领域
本申请涉及电磁运动技术领域，具体涉及一种线性马达。
 背景技术
传统的线性马达通过振子两端的弹簧提供支撑和回复力，为了控制振子的振动范围，常需要设计阻尼件来提高响应，然而现有设计在控制振子的振动范围时，仅能从振子的振动方向上控制振子的振动范围，无法在振子发生偏离振动方向的振动时控制振子在上述偏离振动方向的方向上控制振子的振动范围。
 技术问题
因此，有必要提供一种线性马达。
 技术解决方案
本申请的目的在于提供一种线性马达，以解决传统线性马达无法兼顾控制振子在振动方向和偏离振动方向的方向上的振动范围的技术问题。
为实现上述目的，本申请的技术方案如下：
一种线性马达，包括具有收容空间的壳体，通过弹性件悬置于所述收容空间内的振子组件以及与所述壳体固定连接的定子组件，所述振子组件能够沿所述振子组件的振动方向往复振动，所述弹性件能够为所述振子组件提供回复力，所述弹性件包括弹力臂以及自所述弹力臂的两端分别同向弯折延伸的第一端和第二端，所述第一端与所述振子组件连接，所述第二端与所述壳体连接，所述线性马达还包括第一阻尼件和第二阻尼件，所述第一阻尼件设置在所述弹力臂和所述振子组件之间或所述第一阻尼件设置在所述弹力臂和所述壳体之间，所述第二阻尼件设置在所述第一端和所述振子组件之间或所述第二阻尼件设置在所述第一端和所述壳体之间。
在所述线性马达的一些实施例中，所述第一阻尼件位于所述弹力臂与所述振子组件之间。
在所述线性马达的一些实施例中，所述第一阻尼件上设有插接部，所述振子组件上设有与所述插接部相匹配的插接槽。
在所述线性马达的一些实施例中，所述第二阻尼件位于所述第一端与所述振子组件之间。
在所述线性马达的一些实施例中，所述第一阻尼件分别与所述弹力臂和所述振子组件固定连接，所述第二阻尼件分别与所述第一端和所述振子组件固定连接。
在所述线性马达的一些实施例中，所述弹性件的数量为两个，两个弹性件沿所述振动方向相对设置于所述振子组件的两端。
在所述线性马达的一些实施例中，所述弹力臂包括与所述第一端连接的第一弯折部和与所述第二端连接的第二弯折部。
在所述线性马达的一些实施例中，所述第一弯折部的刚度小于所述第二弯折部的刚度。
在所述线性马达的一些实施例中，所述第一弯折部的弧度大于所述第二弯折部的弧度。
在所述线性马达的一些实施例中，所述收容空间内还收容有两个档件，两个所述档件沿所述振动方向相对设置且一一对应于所述振子组件的两端，所述振子组件上设有避让所述档件的避让槽。
 有益效果
本申请的有益效果在于：
上述线性马达，采用将第一阻尼件设置在弹力臂和振子组件之间或第一阻尼件设置在弹力臂和壳体之间，使得第一阻尼件能够提供振子组件在振子组件的振动方向上工作所需的阻尼，采用将第二阻尼件设置在第一端和振子组件之间或第二阻尼件设置在第一端和壳体之间，使得第二阻尼件能够提供振子组件在偏离振动方向的方向上的阻尼，有效抑制振子组件在振动时的偏振，进而兼顾控制振子组件在振动方向和偏离振动方向的方向上的振动范围。
 附图说明
图1为本申请的一实施方式中线性马达的空间结构示意图；
图2为图1所示线性马达的爆炸示意图；
图3为图1所示线性马达去掉上盖后的主视图；
图4为图1所示线性马达去掉下盖后的主视图。
 本发明的实施方式
下面结合附图和实施方式对本申请作进一步说明。
请一并结合图1至图4，现对本申请提供的线性马达10进行说明。该线性马达10，包括壳体100、弹性件200、振子组件300、定子组件400和线路板500。该壳体100具有收容空间101。具体地，壳体100包括相对设置的上盖110和下盖120以及位于上盖110与下盖120之间的周向侧壁130。上盖110、下盖120和周向侧壁130围设形成收容空间101。本实施例中，上盖110与周向侧壁130通过卡接连接。具体地，周向侧壁130相对上盖110的一侧设有连接凸起131，上盖110的周向设有与连接凸起131相匹配的连接槽111，连接凸起131收容于连接槽111并与上盖110卡接。可以理解为在其他实施例中，上盖110与周向侧壁130还可以通过粘结或超声波焊接等方式连为一体。同样的，周向侧壁130与下盖120之间可通过卡接、粘结或超声波焊接等方式连为一体。
进一步地，振子组件300通过弹性件200悬置于收容空间101内，并能够沿振子组件300的振动方向往复振动。弹性件200能够为振子组件300提供回复力。进一步地，该振子组件300环设于定子组件400。具体地，振子组件300包括质量块310、磁钢320和磁碗330。该质量块310设有用于收容定子组件400的通孔311。本实施例中，磁钢320的数量为四个，包括沿振子组件300的振动方向相对设置的两个磁钢320，以及沿振子组件300的偏振方向相对设置的两个磁钢320，各磁钢320收容于通孔311且环设于定子组件400。本实施例中，磁碗330为分体结构，包括与四个磁钢320一一对应的四个磁碗分部331，磁碗分部331设置于磁钢320远离定子组件400的一侧并将磁钢320固定在质量块310上。
进一步地，定子组件400与壳体100固定连接。该定子组件400包括驱动线圈410和线圈架420。该驱动线圈410缠绕在线圈架420上，并通过线圈架420固定在壳体100上。本实施例中，线路板500用于向定子组件400输送电能，以使定子组件400能够产生磁场。具体地，线路板500贴设于下盖120靠近周向侧壁130一侧并穿过周向侧壁130与驱动线圈410电连接，以使驱动线圈410得电并产生磁场。驱动线圈410产生的磁场与磁钢320产生的磁场互相作用，从而驱动振子组件300在收容空间101内沿振动方向往复振动。
本实施例中，弹性件200的数量为两个，两个弹性件200沿振动方向相对设置于振子组件300的两端。本实施例中，弹性件200为弹性片200。具体地，弹性件200包括弹力臂210以及自弹力臂210的两端分别同向弯折延伸的第一端220和第二端230，第一端220与振子组件300连接，第二端230与壳体100连接。进一步地，第一端220通过第一固定件600夹持在质量块310上，第二端230通过第二固定件700夹持在周向侧壁130。进一步地，弹力臂210包括与第一端220连接的第一弯折部211和与第二端230连接的第二弯折部212。
进一步地，线性马达10还包括第一阻尼件800和第二阻尼件900。本实施例中，第一阻尼件800设置在弹力臂210和振子组件300之间，第二阻尼件900设置在第一端220和振子组件300之间。可以理解为在其他实施例中，第一阻尼件800设置在弹力臂210和振子组件300之间，第二阻尼件900沿偏振方向设置在第一端220和壳体100之间，或第一阻尼件800设置在弹力臂210和壳体100之间，第二阻尼件900设置在第一端220和振子组件300之间，或第一阻尼件800设置在弹力臂210和壳体100之间，第二阻尼件900设置在第一端220和壳体100之间。
上述线性马达10，采用将第一阻尼件800设置在弹力臂210和振子组件300之间或第一阻尼件800设置在弹力臂210和壳体100之间，使得第一阻尼件800能够提供振子组件300在振动方向上工作所需的阻尼，采用将第二阻尼件900设置在第一端220和振子组件300之间或第二阻尼件900设置在第一端220和壳体100之间，使得第二阻尼件900能够提供振子组件300在偏离振动方向的方向上的阻尼，有效抑制振子组件300在振动时的偏振，进而兼顾控制振子组件300在振动方向和偏离振动方向的方向上的振动范围。本实施例中，振动方向平行于图1中箭头X所指方向，偏离振动方向的方向平行于图1中箭头Y所指方向。
进一步地，第一阻尼件800位于弹力臂210与振子组件300之间。第一阻尼件800上设有插接部810，振子组件300上设有与插接部810相匹配的插接槽312。插接部810插设于插接槽312能够提高第一阻尼件800与振子组件300的连接面积，进一步提高第一阻尼件800与振子组件300之间的连接稳定性，以进一步提高第一阻尼件800对振子组件300振动范围的精准控制。进一步地，第一阻尼件800包括上述插接部810和与该插接部810连为一体的本体820。该本体820沿振动方向相对的两侧分别与第二分支220和质量块310贴合，以提高对振子组件300振动范围的控制精度。
进一步地，第一阻尼件800分别与弹力臂210和振子组件300固定连接。第二阻尼件900位于第一端220与振子组件300之间。第二阻尼件900分别与第一端220和振子组件300固定连接，上述设置保证了振子组件300振动范围的精准控制，同时，可通过改变第一阻尼件800和第二阻尼件900与弹性件200和振子组件300之间的连接面积、第一阻尼件800和第二阻尼件900的材质以及第一阻尼件800和第二阻尼件900的形状，从而改变振子组件300的振动范围，以使得振动范围具有可调节性。本实施例中，第一阻尼件800和第二阻尼件900的材质可为泡棉或阻尼胶，第一阻尼件800和第二阻尼件900可通过预先成形或直接填充在弹性件200与振子组件300之间制成。
进一步地，第一弯折部211的刚度小于第二弯折部212的刚度。本实施例中，第一阻尼件800和第二阻尼件900位于第一弯折部211两侧，可提高第一弯折部211附近的刚度，提高振子组件300的振动稳定性，降低振子组件300的偏振。
进一步地，第一弯折部211的弧度大于第二弯折部212的弧度。即弹性件200呈类U型。由于第一弯折部211的弧度大于第二弯折部212的弧度，位于第一弯折部211附近的弹性件200部分的刚度较小，第一阻尼件800和第二阻尼件900位于第一弯折部211两侧，可提高第一弯折部211附近的刚度，提高振子组件300的振动稳定性，降低振子组件300的偏振。
进一步地，收容空间101内还收容有两个档件140。该档件140与下盖120固定连接。进一步地，两个档件140沿振动方向相对设置且一一对应于振子组件300的两端，振子组件300上设有避让档件140的避让槽313。本实施例中，档件140与避让槽313间隔设置，在振动过程中，档件140通过对质量块310起到阻挡作用从而有效避免弹性件200形变过大导致的性能下降。同时弹力臂210上设有弧形缺口213，该弧形缺口213用于避让档件140。为了保证受力平衡，弧形缺口213的数量为两个且分别位于弹力臂210相对的两侧。
以上所述的仅是本申请的实施方式，在此应当指出，对于本领域的普通技术人员来说，在不脱离本申请创造构思的前提下，还可以做出改进，但这些均属于本申请的保护范围。

Claims (10)

  1. 一种线性马达，包括具有收容空间的壳体，通过弹性件悬置于所述收容空间内的振子组件以及与所述壳体固定连接的定子组件，所述振子组件能够沿所述振子组件的振动方向往复振动，所述弹性件能够为所述振子组件提供回复力，其特征在于，所述弹性件包括弹力臂以及自所述弹力臂的两端分别同向弯折延伸的第一端和第二端，所述第一端与所述振子组件连接，所述第二端与所述壳体连接，所述线性马达还包括第一阻尼件和第二阻尼件，所述第一阻尼件设置在所述弹力臂和所述振子组件之间或所述第一阻尼件设置在所述弹力臂和所述壳体之间，所述第二阻尼件设置在所述第一端和所述振子组件之间或所述第二阻尼件设置在所述第一端和所述壳体之间。
  2. 根据权利要求1所述的线性马达，其特征在于，所述第一阻尼件位于所述弹力臂与所述振子组件之间。
  3. 根据权利要求2所述的线性马达，其特征在于，所述第一阻尼件上设有插接部，所述振子组件上设有与所述插接部相匹配的插接槽。
  4. 根据权利要求2所述的线性马达，其特征在于，所述第二阻尼件位于所述第一端与所述振子组件之间。
  5. 根据权利要求4所述的线性马达，其特征在于，所述第一阻尼件分别与所述弹力臂和所述振子组件固定连接，所述第二阻尼件分别与所述第一端和所述振子组件固定连接。
  6. 根据权利要求1~5任一权利要求所述的线性马达，其特征在于，所述弹性件的数量为两个，两个弹性件沿所述振动方向相对设置于所述振子组件的两端。
  7. 根据权利要求6所述的线性马达，其特征在于，所述弹力臂包括与所述第一端连接的第一弯折部和与所述第二端连接的第二弯折部。
  8. 根据权利要求7所述的线性马达，其特征在于，所述第一弯折部的刚度小于所述第二弯折部的刚度。
  9. 根据权利要求7所述的线性马达，其特征在于，所述第一弯折部的弧度大于所述第二弯折部的弧度。
  10. 根据权利要求9所述的线性马达，其特征在于，所述收容空间内还收容有两个档件，两个所述档件沿所述振动方向相对设置且一一对应于所述振子组件的两端，所述振子组件上设有避让所述档件的避让槽。
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