WO2020140538A1 - 线性电机 - Google Patents

线性电机 Download PDF

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Publication number
WO2020140538A1
WO2020140538A1 PCT/CN2019/110716 CN2019110716W WO2020140538A1 WO 2020140538 A1 WO2020140538 A1 WO 2020140538A1 CN 2019110716 W CN2019110716 W CN 2019110716W WO 2020140538 A1 WO2020140538 A1 WO 2020140538A1
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WO
WIPO (PCT)
Prior art keywords
side wall
flange
linear motor
fixed
mounting portion
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2019/110716
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English (en)
French (fr)
Inventor
陶锋
凌芳华
王俊生
浦晓峰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AAC Technologies Holdings Shenzhen Co Ltd
AAC Technologies Pte Ltd
Original Assignee
AAC Acoustic Technologies Shenzhen Co Ltd
AAC Technologies Pte Ltd
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 AAC Acoustic Technologies Shenzhen Co Ltd, AAC Technologies Pte Ltd filed Critical AAC Acoustic Technologies Shenzhen Co Ltd
Publication of WO2020140538A1 publication Critical patent/WO2020140538A1/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
    • H02K33/18—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with coil systems moving upon intermittent or reversed energisation thereof by interaction with a fixed field system, e.g. permanent magnets
    • 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

Definitions

  • the utility model relates to a linear motor, in particular to a linear motor used for portable consumer electronic products.
  • a linear motor includes a housing, a vibrating component, and an elastic support that suspends and supports the vibrating component in the housing.
  • the vibrating component includes a mass with a receiving space and a pole core received in the receiving space.
  • the pole core is only attached to the inner surface of the mass block, the pole core is easy to fall off during use, and the reliability is low.
  • the purpose of the utility model is to provide a linear motor with a simple structure and a reliable pole core connection.
  • a linear motor includes a housing with a receiving space, a vibrator and a stator contained in the receiving space, and an elastic support that supports the vibrator suspended in the receiving space
  • the vibrator includes a mass with an accommodation space and a pole core accommodated in the accommodation space and fixed with the mass
  • the pole core includes a first side wall fixed to the mass and oppositely disposed, and a free space
  • a flange extending from one end of the first side wall and extending toward the elastic support, and the flange is fixed to the mass.
  • the housing includes a housing and a cover plate provided on the housing and cooperating with the housing to form the receiving space
  • the mass includes an upper surface close to the cover plate and the cover A lower surface opposite to the upper surface and an inner surface connecting the upper surface and the lower surface and enclosing the receiving space, a side of the upper surface near the receiving space is recessed toward the lower surface
  • the first side wall is in contact with the inner surface, and the flange is received in the yielding portion.
  • the flange and the yielding portion are welded and fixed.
  • the flange is located at an end of the first side wall close to the cover plate.
  • the pole core further includes an oppositely arranged second side wall connected to the first side wall, and the second side wall is fixed to the inner surface.
  • each of the first side walls is provided with one flange.
  • the first side wall is provided with a notch corresponding to the position of the flange, and the flange is bent and extends from the bottom of the notch.
  • the flange is integrally formed with the first side wall.
  • the vibrator further includes a magnetic steel component fixedly connected to the pole core
  • the stator includes a bracket fixed to the housing and a coil fixed to the bracket, the coil is spaced from the magnetic steel Settings.
  • the elastic support member includes a first mounting portion fixed to the housing, a second mounting portion disposed opposite to the first mounting portion and fixed to the vibrator, and connecting the first mounting portion and In the third mounting portion of the second mounting portion, the first mounting portion, the second mounting portion, and the third mounting portion are integrally formed.
  • the pole core includes a first side wall and a flange bent and extending from one end of the first side wall toward the elastic support.
  • the flange and the first side wall are fixed to the mass block, so that the pole core is fixed in the vibration direction of the linear motor and the direction perpendicular to the vibration direction, and the pole core and The reliability of the connection of the masses.
  • Figure 1 is a perspective structural view of a linear motor of the present invention
  • FIG. 2 is a schematic diagram of an exploded structure of the linear motor shown in FIG. 1;
  • FIG. 3 is a cross-sectional view of the linear motor shown in FIG. 1 along line A-A.
  • an embodiment of the present invention provides a linear motor 100 including a housing 1 with a housing space 10, a vibrator 2 and a stator 3 housed in the housing space 10. And an elastic support 4 supporting the vibrator 2 suspended in the accommodating space 10.
  • the housing 1 includes a housing 11 and a cover plate 12 that is provided on the housing 11 and cooperates with the housing 11 to form a receiving space 10.
  • the vibrator 2 includes a mass 21, a pole core 22 fixed to the mass 21, and a magnetic steel component 23 fixed to the pole core 22.
  • the mass 21 has an accommodating space, and the pole core 22 is fixedly accommodated in the accommodating space.
  • the mass 21 includes an upper surface 211 close to the cover plate 12, a lower surface 212 disposed opposite to the upper surface 211, and a portion connecting the upper surface 211 and the lower surface 212 and enclosing the accommodation space ⁇ 213 ⁇ The inner surface 213.
  • An end portion of the upper surface 211 near the accommodation space is recessed toward the lower surface 212 to form a yielding portion 210, and the yielding portion 210 communicates with the accommodation space.
  • the pole core 22 includes a first side wall 221 fixed to the mass 21 and disposed oppositely, a flange 222 bent and extending from one end of the first side wall 221 toward the elastic support 4, and connecting two The first side wall 221 is opposite to the second side wall 223.
  • the first side wall 221 and the second side wall 223 end up in sequence to form a storage space that is open at both ends, and the flange 222 bends and extends away from the storage space, and the second side wall 223 FIXED to the inner surface 213.
  • the first side wall 221 is provided with a notch 2210 corresponding to the position of the flange 222.
  • the flange 222 is bent and extends from the bottom of the notch 2210.
  • the flange 222 and the first side wall 221 and The second side wall 223 is integrally formed. It can be understood that when the pole core 22 is processed, the flange 222 and the first side wall 221 are an integral structure, and the first side wall 221 is punched outward to form the flange 222, The position before the flange 222 is bent corresponds to forming the notch 2210.
  • the flange 222 is received in the yielding portion 210 and is welded and fixed to the yielding portion 210, and the first side wall 221 and the inner surface 213 are attached.
  • the arrangement of the flange 222 simplifies the assembly process of the pole core 22 and greatly reduces the cost.
  • the flange 222 is fixed to the yielding portion 210, the first side wall 221 and The second side wall 223 is fixed to the inner surface 213, so that the pole core 22 is fixed in the vibration direction and the direction perpendicular to the vibration direction, the connection is better and more reliable, and the installation of the pole core 22 is improved Reliability reduces risk.
  • the flange 222 is located at an end of the first side wall 221 near the cover plate 12.
  • the number of the flanges 222 is two, and each of the first side walls 221 is provided with one flange 222. In other embodiments, the number of the flanges 222 may be other numbers, which is not limited by the present invention.
  • the magnetic steel component 23 is fixedly accommodated in the storage space and fixed with the pole core 22.
  • the magnetic steel assembly 23 includes two first magnetic steels 231 spaced in parallel and two second magnetic steels 232 spaced in parallel. And the first magnetic steel 231 corresponds to the first side wall 221, and the second magnetic steel 232 corresponds to the second side wall 223.
  • the stator 3 includes a bracket 31 fixed on the housing 11 and a coil 32 fixed on the bracket 31.
  • the magnetic steel ring 23 is arranged around the coil 32 and is spaced apart from the coil 32.
  • the elastic support 4 includes a first mounting portion 41 fixed to the housing 11, a second mounting portion 42 spaced from the first mounting portion 41 and fixed to the vibrator 2, and connecting the first A mounting portion 41 and a third mounting portion 43 of the second mounting portion 42, the third mounting portion 43 is suspended in the storage space, and the first mounting portion 41 and the second mounting portion 42
  • the third mounting portion 43 is integrally formed. Further, the number of the elastic support members 4 is two, and the two elastic members 4 are staggered.
  • the pole core 22 includes a first side wall 221 and a bend extending from an end of the first side wall 221 toward the elastic support 4
  • the flange 222 is fixed to the mass 21, so that the pole core 22 is fixed in the vibration direction of the linear motor 100 and the direction perpendicular to the vibration direction, increasing the pole The reliability of the connection between the core 22 and the mass 21.

Landscapes

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

Abstract

一种线性电机，其包括具有收容空间（10）的外壳（1）、收容于该收容空间（10）内的振子（2）和定子（3）、以及支撑该振子（2）悬置于该收容空间（10）内的弹性支撑件（4），该振子（2）包括具有容纳空间的质量块（21）及收容于该容纳空间并与该质量块（21）固定的极芯（22），该极芯（22）包括固定于该质量块（21）且相对设置的第一侧壁（221）以及自该第一侧壁（221）一端朝向该弹性支撑件（4）方向弯折延伸的凸缘（222），该凸缘（222）与该质量块（21）固定。该线性电机中极芯（22）与质量块（21）连接牢靠，可靠性强。

Description

线性电机 技术领域
本实用新型涉及一种线性电机，尤其涉及一种用于便携式消费性电子产品的线性电机。
 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，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。
相关技术中，线性电机包括外壳、振动部件和将振动部件悬置支撑于所述外壳内的弹性支撑件，所述振动部件包括具有容纳空间的质量块及收容于所述容纳空间的极芯，所述极芯仅仅与所述质量块的内表面贴合，所述极芯在使用过程中容易脱落，可靠性较低。
因此，有必要提供一种新型的线性电机来解决上述问题。
 技术问题
本实用新型的目的在于提供一种结构简单且极芯连接牢靠的线性电机。
 技术解决方案
本实用新型的技术方案如下：一种线性电机，包括具收容空间的外壳、收容于所述收容空间内的振子和定子、以及支撑所述振子悬置于所述收容空间内的弹性支撑件，所述振子包括具有容纳空间的质量块及收容于所述容纳空间并与所述质量块固定的极芯，所述极芯包括固定于所述质量块且相对设置的第一侧壁以及自所述第一侧壁一端朝向所述弹性支撑件方向弯折延伸的凸缘，所述凸缘与所述质量块固定。
优选的，所述外壳包括壳体和盖设于所述壳体并与所述壳体配合形成所述收容空间的盖板，所述质量块包括靠近所述盖板的上表面、与所述上表面相对设置的下表面以及连接所述上表面与所述下表面并围成所述容纳空间的内表面，所述上表面靠近所述容纳空间的一侧朝所述下表面方向凹陷形成有让位部，所述第一侧壁与所述内表面贴合，所述凸缘收容于所述让位部。
优选的，所述凸缘与所述让位部焊接固定。
优选的，所述凸缘位于所述第一侧壁靠近所述盖板的一端。
优选的，所述极芯还包括连接所述第一侧壁且相对设置的第二侧壁，所述第二侧壁固定于内表面。
优选的，所述凸缘为两个，每一所述第一侧壁上设有一个所述凸缘。
优选的，所述第一侧壁对应所述凸缘的位置设有缺口，所述凸缘自所述缺口的底部弯折延伸。
优选的，所述凸缘与所述第一侧壁一体成型。
优选的，所述振子还包括与所述极芯固定连接的磁钢组件，所述定子包括与所述外壳固定的支架和固定于所述支架上的线圈，所述线圈与所述磁钢间隔设置。
优选的，所述弹性支撑件包括与所述外壳固定的第一安装部、与所述第一安装部相对间隔设置并与所述振子固定的第二安装部以及连接所述第一安装部和所述第二安装部的第三安装部，所述第一安装部、所述第二安装部及所述第三安装部一体成型。
 有益效果
与相关技术相比，本实用新型提供的线性电机中所述极芯包括第一侧壁及自所述第一侧壁的一端向靠近所述弹性支撑件方向弯折延伸的凸缘，所述凸缘及所述第一侧壁均与所述质量块固定，使得所述极芯在所述线性电机的振动方向和垂直于振动方向的方向上均实现了固定，增加了所述极芯与所述质量块连接的牢靠性。
 附图说明
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为本实用新型线性电机的立体结构图；
图2为图1所示的线性电机的分解结构示意图；
图3为图1所示的线性电机沿A-A线的剖视图。
 本发明的实施方式
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。
请参阅图1至图3，本实用新型实施例提供了一种线性电机100，所述线性电机100包括具收容空间10的外壳1、收容于所述收容空间10内的振子2和定子3、以及支撑所述振子2悬置于所述收容空间10内的弹性支撑件4。
所述外壳1包括壳体11和盖设于所述壳体11并与所述壳体11配合形成收容空间10的盖板12。
所述振子2包括质量块21、与所述质量块21固定的极芯22以及与所述极芯22固定的磁钢组件23。
所述质量块21具有容纳空间，所述极芯22固定收容于所述容纳空间内。所述质量块21包括靠近所述盖板12的上表面211、与所述上表面211相对设置的下表面212以及连接所述上表面211和所述下表面212并围成所述容纳空间的内表面213。所述上表面211靠近所述容纳空间的一端朝所述下表面212方向凹陷形成有让位部210，所述让位部210与所述容纳空间连通。
所述极芯22包括固定于所述质量块21且相对设置的第一侧壁221、自所述第一侧壁221一端朝向所述弹性支撑件4方向弯折延伸的凸缘222以及连接两个所述第一侧壁221且相对设置的第二侧壁223。所述第一侧壁221和所述第二侧壁223依次收尾相接围成两端开口的收纳空间，所述凸缘222朝远离所述收纳空间弯折延伸，所述第二侧壁223固定于所述内表面213。
所述第一侧壁221对应所述凸缘222的位置设有缺口2210，所述凸缘222自所述缺口2210的底部弯折延伸，所述凸缘222与所述第一侧壁221及所述第二侧壁223一体成型。可以理解的是，所述极芯22加工时，所述所述凸缘222和所述第一侧壁221为一体结构，将所述第一侧壁221朝外侧冲压形成所述凸缘222，所述凸缘222弯折前的位置对应形成所述缺口2210。
所述凸缘222收容于所述让位部210，并与所述让位部210焊接固定，所述第一侧壁221与所述内表面213贴合。所述凸缘222的设置使得所述极芯22的装配过程得到简化，大大降低了成本，同时，所述所述凸缘222固定于所述让位部210，所述第一侧壁221及所述第二侧壁223固定于所述内表面213，使得所述极芯22在振动方向和垂直于振动方向的方向均得到了固定，连接更佳牢靠，提高了所述极芯22安装的可靠性，降低了风险性。
进一步的，所述凸缘222位于所述第一侧壁221靠近所述盖板12的一端。所述凸缘222的数量为两个，每一个所述第一侧壁221上设有一个所述凸缘222。在其他实施方式中，所述凸缘222的数量还可以为其他数量，本实用新型对此不做限制。
所述磁钢组件23固定收容于所述收纳空间，并与所述极芯22固定。所述磁钢组件23包括两平行间隔设置的第一磁钢231以及两平行间隔设置的第二磁钢232。且所述第一磁钢231与所述第一侧壁221相对应，所述第二磁钢232与所述第二侧壁223相对应。
所述定子3包括固定于所述壳体11上的支架31和固定于所述支架31上的线圈32。所述磁钢23环设于所述线圈32四周，并与所述线圈32间隔设置。
所述弹性支撑件4包括与所述外壳11固定的第一安装部41、与所述第一安装部41相对间隔设置并与所述振子2固定的第二安装部42以及连接所述第一安装部41和所述第二安装部42的第三安装部43，所述第三安装部43悬置于所述收容空间内，且所述第一安装部41、所述第二安装部42及所述第三安装部43一体成型。进一步的，所述弹性支撑件4的数量为两个，两个所述弹性件4交错设置。
与相关技术相比，本实用新型提供的线性电机100中所述极芯22包括第一侧壁221及自所述第一侧壁221的一端向靠近所述弹性支撑件4方向弯折延伸的凸缘222，所述凸缘222与所述质量块21固定，使得所述极芯22在所述线性电机100的振动方向和垂直于振动方向的方向上均实现了固定，增加了所述极芯22与所述质量块21连接的牢靠性。
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 (10)

  1. 一种线性电机，包括具收容空间的外壳、收容于所述收容空间内的振子和定子、以及支撑所述振子悬置于所述收容空间内的弹性支撑件，所述振子包括具有容纳空间的质量块及收容于所述容纳空间并与所述质量块固定的极芯，其特征在于，所述极芯包括固定于所述质量块且相对设置的第一侧壁以及自所述第一侧壁一端朝向所述弹性支撑件方向弯折延伸的凸缘，所述凸缘与所述质量块固定。
  2. 根据权利要求1所述的线性电机，其特征在于，所述外壳包括壳体和盖设于所述壳体并与所述壳体配合形成所述收容空间的盖板，所述质量块包括靠近所述盖板的上表面、与所述上表面相对设置的下表面以及连接所述上表面与所述下表面并围成所述容纳空间的内表面，所述上表面靠近所述容纳空间的一侧朝所述下表面方向凹陷形成有让位部，所述第一侧壁与所述内表面贴合，所述凸缘收容于所述让位部。
  3. 根据权利要求2所述的线性电机，其特征在于，所述凸缘与所述让位部焊接固定。
  4. 根据权利要求2所述的线性电机，其特征在于，所述凸缘位于所述第一侧壁靠近所述盖板的一端。
  5. 根据权利要求2所述的线性电机，其特征在于，所述极芯还包括连接所述第一侧壁且相对设置的第二侧壁，所述第二侧壁固定于内表面。
  6. 根据权利要求4所述的线性电机，其特征在于，所述凸缘为两个，每一所述第一侧壁上设有一个所述凸缘。
  7. 根据权利要求4所述的线性电机，其特征在于，所述第一侧壁对应所述凸缘的位置设有缺口，所述凸缘自所述缺口的底部弯折延伸。
  8. 根据权利要求4所述的线性电机，其特征在于，所述凸缘与所述第一侧壁一体成型。
  9. 根据权利要求1所述的线性电机，其特征在于，所述振子还包括与所述极芯固定连接的磁钢组件，所述定子包括与所述外壳固定的支架和固定于所述支架上的线圈，所述线圈与所述磁钢间隔设置。
  10. 根据权利要求1所述的线性电机，其特征在于，所述弹性支撑件包括与所述外壳固定的第一安装部、与所述第一安装部相对间隔设置并与所述振子固定的第二安装部以及连接所述第一安装部和所述第二安装部的第三安装部，所述第一安装部、所述第二安装部及所述第三安装部一体成型。
PCT/CN2019/110716 2018-12-30 2019-10-12 线性电机 Ceased WO2020140538A1 (zh)

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CN209389905U (zh) * 2018-12-30 2019-09-13 瑞声科技(新加坡)有限公司 线性电机
CN110932515A (zh) * 2019-12-26 2020-03-27 浙江省东阳市东磁诚基电子有限公司 一种水平线性马达结构及其实现方法

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