WO2021127907A1 - 线性振动电机 - Google Patents
线性振动电机 Download PDFInfo
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- WO2021127907A1 WO2021127907A1 PCT/CN2019/127597 CN2019127597W WO2021127907A1 WO 2021127907 A1 WO2021127907 A1 WO 2021127907A1 CN 2019127597 W CN2019127597 W CN 2019127597W WO 2021127907 A1 WO2021127907 A1 WO 2021127907A1
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- vibration
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- auxiliary
- magnetic steel
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- 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
- H02K33/04—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 wherein the frequency of operation is determined by the frequency of uninterrupted AC energisation
- H02K33/06—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 wherein the frequency of operation is determined by the frequency of uninterrupted AC energisation with polarised armatures
Definitions
- the utility model relates to a motor, in particular to a linear vibration motor used in the field of mobile electronic products.
- the related art linear vibration motor includes a guide housing with a housing space, a vibration unit housed in the guide housing, a coil unit sleeved on the outside of the guide housing, and an auxiliary magnet fixed to the guide housing The unit, through the interaction of the electric field generated by the coil unit, the magnetic field generated by the vibrating unit and the auxiliary magnetic steel, so as to drive the vibrating unit to make a reciprocating linear motion to generate vibration.
- the auxiliary magnet unit includes two or four block-shaped auxiliary magnets. If two auxiliary magnets are provided, the two auxiliary magnets will have a magnetic bias and cause vibration.
- the vibration of the unit is unstable, and a plurality of auxiliary magnets are provided, and the assembly is complicated, and the position of the assembly is deviated, resulting in inconcentration of force, thereby affecting the stability of the linear vibration motor.
- the technical problem to be solved by the utility model is to provide a linear vibration motor with simple assembly, good vibration performance and high reliability.
- the linear vibration motor includes a guide housing, a vibration unit, a coil unit, and an auxiliary magnetic steel unit; the guide housing includes a body and a penetrating through the body.
- the guide channel; the vibration unit is accommodated in the guide channel and forms a sliding connection, the vibration unit includes a magnetic steel unit; the coil unit is sleeved on the outside of the guide housing to drive the vibration unit along The axial vibration of the guide channel; the auxiliary magnetic steel unit includes two circular auxiliary magnetic steels, and the two auxiliary magnetic steels are respectively sleeved and fixed to the guide housing and spaced from the vibration unit The auxiliary magnetic steel is respectively arranged on opposite sides of the coil unit along the vibration direction of the vibration unit; the auxiliary magnetic steel unit is located in the magnetic field of the magnetic steel unit to generate The vibration restoring force of the vibration displacement of the vibration unit.
- the magnetic steel unit includes a magnetic steel and a soft magnetic block attached to the magnetic pole of the magnetic steel.
- the magnetic steel includes two, and the soft magnetic block is sandwiched and fixed between the two magnetic steels.
- the vibration unit further includes a mass block, which is attached to a side of the magnetic steel away from the soft magnetic block along the vibration direction.
- the magnetization directions of the magnets are all parallel to the vibration direction, and the magnetization directions of the two magnets are opposite; the magnetization direction of the auxiliary magnet is perpendicular to the vibration direction, and The inner magnetic pole of the auxiliary magnetic steel is opposite to the magnetic pole of one end of the magnetic steel away from the soft magnetic block.
- the linear vibration motor further includes two housing plates fixed to the guide housing, the two housing plates are respectively located at opposite ends of the guide housing along the axial direction of the guide channel, and The housing plate at least partially covers the guide channel.
- the outer surface of the guide housing is recessed along its radial direction to form two ring-shaped first receiving grooves and a ring-shaped second receiving groove, and the two first receiving grooves are spaced apart along the vibration direction.
- the two auxiliary magnets are respectively accommodated and fixed in the two first accommodating grooves, and the coil unit is accommodated and fixed in the second accommodating groove.
- the auxiliary unit includes two ring-shaped auxiliary magnets, and the auxiliary magnets are arranged in a ring structure, so that the force distribution of the two auxiliary magnets is concentrated.
- the vibrating unit can receive 360 degrees of force, and the force is more uniform, so that the vibration of the vibrating unit is more stable; on the other hand, the number of auxiliary magnets is small, and the assembly is simple
- the auxiliary magnets of the two ring structures are respectively accommodated and fixed in the two first accommodating grooves, the assembly position is not prone to deviation, the fixing effect is strengthened, and the rigidity of the auxiliary magnet unit is improved, and The overall volume of the linear vibration motor is reduced.
- Figure 1 is a schematic diagram of the three-dimensional structure of the linear vibration motor of the utility model
- Figure 2 is an exploded view of the three-dimensional structure of the linear vibration motor of the utility model
- Figure 3 is a cross-sectional view taken along line A-A in Figure 1;
- Figure 4 is a partial three-dimensional structure diagram of the linear vibration motor of the utility model
- Fig. 5 is a sectional view taken along the line B-B in Fig. 4;
- the present invention provides a linear vibration motor 100, a guide housing 1, a vibration unit 2, a coil unit 3, an auxiliary magnetic steel unit 4, and a housing plate 5.
- the guide housing 1 includes a body 11, a guide channel 12 penetrating through the body 11, the outer surface of the guide housing 1 is recessed along its radial direction to form two ring-shaped first receiving grooves 13 and a ring-shaped first receiving groove 13
- the second accommodating slot 14 14.
- the guide channel 12 is used to accommodate the vibration unit 2 and provide a vibration space for the vibration unit 2.
- the first receiving groove 13 includes two, and they are arranged on opposite sides of the second receiving groove 14 at intervals along the vibration direction of the vibrating unit 2.
- the vibration unit 2 is accommodated in the guide channel 12 and forms a sliding connection, thereby forming a sliding vibration mode.
- the vibration unit 2 includes a magnetic steel unit 21 and a mass 22.
- the magnetic steel unit 21 is used to interact with the coil unit 3 to provide driving force.
- the magnetic steel unit 21 includes a magnetic steel 211 and a soft magnetic block 212 attached to the magnetic pole of the magnetic steel 211.
- the magnetic steel 211 includes two; the soft magnetic block 212 is sandwiched and fixed between the two magnetic steels 211 for magnetic conduction.
- the number of the magnetic steel 211 and the soft magnetic block 212 is not limited to the above example.
- the mass 22 is used as a counterweight to increase the weight of the vibration unit 2 to achieve the purpose of increasing the vibration amplitude of the vibration unit 2 and improving the vibration performance.
- the mass block 22 includes two masses and is attached to a side of the magnetic steel 211 away from the soft magnetic block 212 along the vibration direction.
- the coil unit 3 is sleeved on the outside of the guide housing 1 to drive the vibration unit 2 to vibrate along the axial direction of the guide channel 1.
- the coil unit 3 is accommodated and fixed in the second accommodating groove 14.
- the fixing effect can be enhanced, and on the other hand, the overall volume of the linear vibration motor 100 can be reduced.
- the auxiliary magnetic steel unit 4 is fixed to the guide housing 1 and is spaced apart from the vibration unit 2.
- the auxiliary magnetic steel unit 4 acts as a magnetic spring structure, which is located in the magnetic field of the magnetic steel unit 21 to generate a vibration restoring force for restoring the vibration displacement of the vibration unit 2, that is, the vibration unit is in a horizontal position.
- the reciprocating vibration in the vibration direction provides restoring force.
- the auxiliary magnet unit 4 includes two ring-shaped auxiliary magnets 41, and the two auxiliary magnets 41 are respectively sleeved and fixed to the guide housing 1 and spaced apart from the vibration unit 2. And the auxiliary magnets 41 are respectively arranged on opposite sides of the coil unit 3 along the vibration direction of the vibration unit 2.
- the auxiliary unit 4 includes two auxiliary magnets 41 with a ring structure.
- the auxiliary magnets 41 are arranged in a ring structure, so that the force distribution of the two auxiliary magnets 41 is concentrated, and there is no
- the magnetic bias enables the vibrating unit to receive 360 degrees of force, and the force is more uniform, so that the vibration of the vibrating unit 2 is more stable; on the other hand, the number of auxiliary magnets 41 is small, the assembly is simple, and
- the auxiliary single magnets 41 of the two ring structures are respectively accommodated and fixed in the two first accommodating grooves 13, the assembly position is not prone to deviation, the fixing effect is strengthened, and the rigidity of the auxiliary magnet unit 4 is improved. , And reduce the overall volume of the linear vibration motor 100.
- the magnetization directions of the two magnets 211 of the magnet unit 21 are both parallel to the vibration direction, and the magnetization directions are opposite; the magnetization of the two auxiliary magnets 41 The direction is perpendicular to the vibration direction, and the inner magnetic pole of the auxiliary magnet 41 is opposite to the magnetic pole of the end of the magnet 211 away from the soft magnetic block 212.
- the coil unit 3 interacts with the magnet unit 21 to provide a reciprocating driving force for the vibrating unit 2, and the auxiliary magnet unit 4 provides a restoring force similar to a traditional spring in the vibration reciprocating motion of the vibrating unit 2; linear vibration
- the unit 100 uses the principle of resonance. Driven by the coil unit 3 as the drive system, the maximum vibration displacement is generated near the resonance frequency of the auxiliary magnetic steel unit 4, thereby obtaining the maximum shock sense.
- the vibration displacement is 3-4 of the related-art linear vibration motor. Times, large displacement can excavate more vibration modes and bring more vibration experience.
- the traditional spring is omitted, the assembly process is simpler, and the accuracy of the sauce is lower, which effectively improves the assembly efficiency and the yield of the finished product.
- the housing plate 5 includes two bodies 11 respectively fixed to the guide housing 1, and the two housing plates 5 are respectively located at opposite ends of the guide housing 1 along the axial direction of the guide channel 12, namely It is fixed to opposite ends of the main body 11, and the shell plate 5 at least partially covers the guide channel 12. In this embodiment, both of the two shell plates 5 completely cover the guide channel 12.
- the vibration displacement of the vibration unit 2 can be adjusted according to different voltages, so as to obtain different vibration intensities, and is different from traditional motors.
- the linear vibration motor 100 of the present invention forms a sliding magnetic spring vibration structure, which is high at a certain height. Under voltage, the vibration unit 2 can collide with the housing plate 5 to obtain a collision effect and bring more user experience.
- the auxiliary unit includes two auxiliary magnets with a ring structure, and the auxiliary magnets are arranged in a ring structure, so that the force distribution of the two auxiliary magnets is concentrated.
- the vibrating unit can receive 360 degrees of force, and the force is more uniform, so that the vibration of the vibrating unit is more stable; on the other hand, the number of auxiliary magnets is small, and the assembly is simple
- the auxiliary single magnets of the two ring structures are respectively accommodated and fixed in the two first accommodating grooves, the assembly position is not prone to deviation, the fixing effect is strengthened, and the rigidity of the auxiliary magnet unit is improved. And the overall volume of the linear vibration motor is reduced.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
Abstract
一种线性振动电机（100），包括导向壳体（1）、振动单元（2）、线圈单元（3）以及辅助磁钢单元（4）；导向壳体（1）包括本体（11）和贯穿本体（11）的导向通道（12）；振动单元（2）收容于导向通道（12）内并形成滑动连接，振动单元（2）包括磁钢单元（21）；线圈单元（3）套设于导向壳体（1）外侧，用以驱动振动单元（2）沿导向通道（12）的轴向振动；辅助磁钢单元（4）包括两个呈环状的辅助磁钢（41），两个辅助磁钢（41）分别套设固定于导向壳体（1）并与振动单元（2）间隔设置，且辅助磁钢（41）沿振动单元（2）的振动方向分别设于线圈单元（3）的相对两侧；辅助磁钢单元（4）位于磁钢单元（2）的磁场内以产生用于恢复振动单元（2）的振动位移的振动回复力。上述技术方案的线性振动电机（100）装配简单、振动性能好，且可靠性高。
Description
本实用新型涉及一种电机，尤其涉及一种运用在移动电子产品领域的线性振动电机。
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，这些电子产品一般都会用到线性振动电机来做***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优，使用寿命长。
相关技术的线性振动电机包括具有收容空间的导向壳体、收容于所述导向壳体的振动单元、套设于所述导向壳体外侧的线圈单元以及固定于所述导向壳体的辅助磁钢单元，通过所述线圈单元产生的电场、所述振动单元和所述辅助磁钢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。
然而，相关技术的线性振动电机中，所述辅助磁钢单元包括两个或四个块状的辅助磁钢，如果设置两个辅助磁钢，则两个辅助磁钢存在磁力偏置，导致振动单元振动不稳，而设置多个所述辅助磁钢，装配复杂，装配的位置存在偏差，导致受力不集中，从而影响线性振动电机的稳定性。
因此，有必要提供一种新的线性振动电机解决上述问题。
本实用新型需要解决的技术问题是提供一种装配简单、振动性能好，且可靠性高的线性振动电机。
为解决上述技术问题，本实用新型提供了一种线性振动电机，该线性振动电机包括导向壳体、振动单元、线圈单元以及辅助磁钢单元；所述导向壳体包括本体和贯穿所述本体的导向通道；所述振动单元收容于所述导向通道内并形成滑动连接，所述振动单元包括磁钢单元；所述线圈单元套设于所述导向壳体外侧，用以驱动所述振动单元沿所述导向通道的轴向振动；所述辅助磁钢单元包括两个呈环状的辅助磁钢，两个所述辅助磁钢分别套设固定于所述导向壳体并与所述振动单元间隔设置，且所述辅助磁钢沿所述振动单元的振动方向分别设于所述线圈单元的相对两侧；所述辅助磁钢单元位于所述磁钢单元的磁场内以产生用于恢复所述振动单元的振动位移的振动回复力。
优选的，所述磁钢单元包括磁钢和贴设于所述磁钢的磁极处的软磁块。
优选的，所述磁钢包括两个，所述软磁块夹设固定于两个所述磁钢之间。
优选的，所述振动单元还包括质量块，所述质量块沿所述振动方向贴设于所述磁钢远离所述软磁块的一侧。
优选的，所述磁钢的充磁方向均平行于所述振动方向，且两个所述磁钢的充磁方向相反；所述辅助磁钢的充磁方向垂直于所述振动方向，且所述辅助磁钢内侧磁极与所述磁钢远离所述软磁块一端的磁极相反。
优选的，所述线性振动电机还包括固定于所述导向壳体的两个外壳板，两个所述外壳板沿所述导向通道的轴向分别位于所述导向壳体的相对两端，且所述外壳板至少部分覆盖所述导向通道。
优选的，所述导向壳体的外表面沿其径向凹陷形成两个呈环状的第一收容槽和呈环状第二收容槽，两个所述第一收容槽沿所述振动方向间隔设置于所述第二收容槽的相对两侧，两个所述辅助磁钢分别收容固定于两个所述第一收容槽内，所述线圈单元收容固定于所述第二收容槽内。
与相关技术相比，本实用新型的线性振动电机，所述辅助单元包括两个呈环状的辅助磁钢，所述辅助磁钢设置为环状结构，使两个辅助磁钢受力分布集中，不会存在磁力偏置，使所述振动单元能够360度受力，且受力更加均匀，从而使所述振动单元振动更加稳定；另一方面，所述辅助磁钢的数量少，装配简单，而且两个环形结构的所述辅助磁钢分别收容固定于两个所述第一收容槽，装配位置不容易发生偏差，加强了固定效果，从而提高了所述辅助磁钢单元的刚度，并且减小了线性振动电机整体体积。
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示意图；
图2为本实用新型线性振动电机的立体结构分解图；
图3为沿图1中A-A线的剖视图；
图4为本实用新型线性振动电机的部分立体结构示意图；
图5为沿图4中B-B线的剖视图。
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1-5所示，本实用新型提供了一种线性振动电机100，导向壳体1、振动单元2、线圈单元3、辅助磁钢单元4以及外壳板5。
所述导向壳体1包括本体11、贯穿所述本体11的导向通道12、由导向壳体1的外表面沿其径向凹陷形成两个呈环状的第一收容槽13和呈环状的第二收容槽14。
导向通道12用于收容振动单元2，为振动单元2提供振动空间。
本实施方式中，所述第一收容槽13包括两个，并沿所述振动单元2的振动方向间隔设置于所述第二收容槽14的相对两侧。
所述振动单元2收容于所述导向通道12内并形成滑动连接，从而形成滑动式振动方式。
所述振动单元2包括磁钢单元21和质量块22。
所述磁钢单元21用于与所述线圈单元3相互作用以提供驱动力。
本实施方式中，磁钢单元21包括磁钢211和贴设于所述磁钢211的磁极处的软磁块212。具体的，所述磁钢211包括两个；所述软磁块212夹设固定于两个所述磁钢211之间，用于导磁。当然，所述磁钢211和所述软磁块212的数量不限于上述举例。
质量块22用于配重，增加振动单元2的重量，以实现提高振动单元2的振动幅度，改善振动性能的目的。
本实施方式中，所述质量块22包括两个且沿所述振动方向贴设于所述磁钢211远离所述软磁块212的一侧。
所述线圈单元3套设于所述导向壳体1外侧，用以驱动所述振动单元2沿所述导向通道1的轴向振动。
本实施方式中，所述线圈单元3收容固定于所述第二收容槽14内。一方面可加强固定效果，另一方面可减小线性振动电机100整体体积。
所述辅助磁钢单元4固定于所述导向壳体1并与所述振动单元2间隔设置。所述辅助磁钢单元4为作磁性弹簧结构作用，其位于所述磁钢单元21的磁场内以产生用于恢复所述振动单元2的振动位移的振动回复力，即，为振动单元在水平振动方向的往复振动提供回复力。
具体的，所述辅助磁钢单元4包括两个呈环状的辅助磁钢41，两个所述辅助磁钢41分别套设固定于所述导向壳体1并与所述振动单元2间隔设置，且所述辅助磁钢41沿所述振动单元2的振动方向分别设于所述线圈单元3的相对两侧。
在本实施方式中，所述辅助单元4包括两个环形结构的所述辅助磁钢41，所述辅助磁钢41设置为环形结构，使两个辅助磁钢41受力分布集中，不会存在磁力偏置，使所述振动单元能够360度受力，且受力更加均匀，从而使所述振动单元2振动更加稳定；另一方面，所述辅助磁钢41的数量少，装配简单，而且两个环形结构的所述辅助单磁钢41分别收容固定于两个所述第一收容槽13，装配位置不容易发生偏差，加强了固定效果，从而提高了所述辅助磁钢单元4的刚度，并且减小了线性振动电机100整体体积。
如图3中所示，本实施方式中，磁钢单元21的两个磁钢211充磁方向均平行于所述振动方向，且充磁方向相反；两个所述辅助磁钢41的充磁方向垂直于所述振动方向，且所述辅助磁钢41内侧磁极与所述磁钢211远离所述软磁块212一端的磁极相反。
线圈单元3与磁钢单元21相互作用用以为振动单元2提供往复运动的驱动力，辅助磁钢单元4在振动单元2的振动往复运动过程中提供类似传统弹簧的振动往复的回复力；线性振动单元100利用共振原理，在线圈单元3作为驱动***的驱动下，在辅助磁钢单元4共振频率附近产生最大振动位移，从而获得最大震感，其振动位移为相关技术的线性振动电机的3-4倍，大位移可以挖掘更多的振动模式，带来更多振感体验。
由于振动单元2、导向通道12以及辅助磁钢单元4之间形成了滑动式磁弹簧振动结构，避免了使用传统弹簧结构提供支撑回复力时弹簧结构自身疲劳而失效的问题以及脱落的问题，有效的提高了线性振动电机100的使用寿命，且可靠性好。
另外，因形成滑动式磁弹簧振动结构，省去了传统弹簧，装配工序更简单，且酱精度要求更低，有效提高了装配效率的成品良率。
外壳板5包括两个且分别固定于所述导向壳体1的本体11，两个所述外壳板5沿所述导向通道12的轴向分别位于所述导向壳体1的相对两端，即固定于本体11的相对两端，且所述外壳板5至少部分覆盖所述导向通道12。本实施方式中，两个外壳板5均完全覆盖导向通道12。
使用该线性振动电机时，可根据不同电压调节振动单元2的振动位移，从而获得不同振动强度，并且区别于传统电机，本实用新型的线性振动电机100形成滑动式磁弹簧振动结构，在一定高电压下，可使振动单元2与外壳板5碰撞以获得碰撞效果，带来更多的用户体验。
与相关技术相比，本实用新型的线性振动电机，所述辅助单元包括两个环形结构的所述辅助磁钢，所述辅助磁钢设置为环形结构，使两个辅助磁钢受力分布集中，不会存在磁力偏置，使所述振动单元能够360度受力，且受力更加均匀，从而使所述振动单元振动更加稳定；另一方面，所述辅助磁钢的数量少，装配简单，而且两个环形结构的所述辅助单磁钢分别收容固定于两个所述第一收容槽，装配位置不容易发生偏差，加强了固定效果，从而提高了所述辅助磁钢单元的刚度，并且减小了线性振动电机整体体积。
以上所述仅为本实用新型的实施例，并非因此限制本实用新型的专利范围，凡是利用本实用新型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，均同理包括在本实用新型的专利保护范围内。
Claims (7)
- 一种线性振动电机，其特征在于，该线性振动电机包括导向壳体、振动单元、线圈单元以及辅助磁钢单元；所述导向壳体包括本体和贯穿所述本体的导向通道；所述振动单元收容于所述导向通道内并形成滑动连接，所述振动单元包括磁钢单元；所述线圈单元套设于所述导向壳体外侧，用以驱动所述振动单元沿所述导向通道的轴向振动；所述辅助磁钢单元包括两个呈环状的辅助磁钢，两个所述辅助磁钢分别套设固定于所述导向壳体并与所述振动单元间隔设置，且所述辅助磁钢沿所述振动单元的振动方向分别设于所述线圈单元的相对两侧；所述辅助磁钢单元位于所述磁钢单元的磁场内以产生用于恢复所述振动单元的振动位移的振动回复力。
- 根据权利要求1所述的线性振动电机，其特征在于，所述磁钢单元包括磁钢和贴设于所述磁钢的磁极处的软磁块。
- 根据权利要求2所述的线性振动电机，其特征在于，所述磁钢包括两个，所述软磁块夹设固定于两个所述磁钢之间。
- 根据权利要求2所述的线性振动电机，其特征在于，所述振动单元还包括质量块，所述质量块沿所述振动方向贴设于所述磁钢远离所述软磁块的一侧。
- 根据权利要求3所述的线性振动电机，其特征在于，所述磁钢的充磁方向均平行于所述振动方向，且两个所述磁钢的充磁方向相反；所述辅助磁钢的充磁方向垂直于所述振动方向，且所述辅助磁钢内侧磁极与所述磁钢远离所述软磁块一端的磁极相反。
- 根据权利要求1所述的线性振动电机，其特征在于，所述线性振动电机还包括固定于所述导向壳体的两个外壳板，两个所述外壳板沿所述导向通道的轴向分别位于所述导向壳体的相对两端，且所述外壳板至少部分覆盖所述导向通道。
- 根据权利要求1所述的线性振动电机，其特征在于，所述导向壳体的外表面沿其径向凹陷形成两个呈环状的第一收容槽和呈环状第二收容槽，两个所述第一收容槽沿所述振动方向间隔设置于所述第二收容槽的相对两侧，两个所述辅助磁钢分别收容固定于两个所述第一收容槽内，所述线圈单元收容固定于所述第二收容槽内。
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| JPH11178304A (ja) * | 1997-12-08 | 1999-07-02 | Star Micronics Co Ltd | 振動装置 |
| CN103348573A (zh) * | 2011-05-10 | 2013-10-09 | 日本电产精密株式会社 | 振动产生装置 |
| CN104660106A (zh) * | 2015-02-02 | 2015-05-27 | 瑞声精密电子沭阳有限公司 | 扁平线性振动电机 |
| CN204810104U (zh) * | 2015-07-17 | 2015-11-25 | 瑞声光电科技(常州)有限公司 | 线性电机 |
| US20170222531A1 (en) * | 2016-01-29 | 2017-08-03 | Topray Mems Inc. | Dual diamagnetic linear resonant actuator |
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|---|---|---|---|---|
| JPH11178304A (ja) * | 1997-12-08 | 1999-07-02 | Star Micronics Co Ltd | 振動装置 |
| CN103348573A (zh) * | 2011-05-10 | 2013-10-09 | 日本电产精密株式会社 | 振动产生装置 |
| CN104660106A (zh) * | 2015-02-02 | 2015-05-27 | 瑞声精密电子沭阳有限公司 | 扁平线性振动电机 |
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