WO2020134472A1 - 线性电机 - Google Patents

线性电机 Download PDF

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Publication number
WO2020134472A1
WO2020134472A1 PCT/CN2019/113359 CN2019113359W WO2020134472A1 WO 2020134472 A1 WO2020134472 A1 WO 2020134472A1 CN 2019113359 W CN2019113359 W CN 2019113359W WO 2020134472 A1 WO2020134472 A1 WO 2020134472A1
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WO
WIPO (PCT)
Prior art keywords
mounting portion
linear motor
fixed
vibrator
housing
Prior art date
Application number
PCT/CN2019/113359
Other languages
English (en)
French (fr)
Inventor
汤赟
毛路斌
Original Assignee
瑞声声学科技(深圳)有限公司
瑞声科技（南京）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（南京）有限公司 filed Critical 瑞声声学科技(深圳)有限公司
Publication of WO2020134472A1 publication Critical patent/WO2020134472A1/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
    • H02K33/18—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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
    • B06B1/04—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with electromagnetism
    • B06B1/045—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with electromagnetism using 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
    • 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
    • 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 in portable consumer electronic products.
  • a linear motor includes a housing, a vibrating component, and an elastic support member that suspends and supports the vibrating component in the housing.
  • the elastic support member is generally U-shaped, one end of which is connected to the housing and the other end It is connected to the vibrating component, and all the stress generated by the vibration of the vibrating component is borne by the elastic support. Therefore, this elastic support is easily deformed during the vibration process, resulting in low product reliability.
  • the object of the present invention is to provide a linear motor with low stress, not easily broken, and high reliability.
  • a linear motor includes a housing with a housing space, a vibrator and a stator housed in the housing space, and an elasticity supporting the vibrator suspended in the housing space
  • a support member the elastic support member includes a first mounting portion fixed to the housing, a second mounting portion that is spaced apart from the first mounting portion and fixed to the vibrator, and One end is bent to extend to a first extension portion connected to one end of the second mounting portion, a second extension portion bent to extend from the other end of the second mounting portion toward the first mounting portion, and from The second extension A third extending portion bent and extending at the end of the portion, the third extending portion being fixedly connected to the first mounting portion.
  • the distance between the first extending portion and the second extending portion gradually decreases from the first mounting portion toward the second mounting portion.
  • the linear motor further includes a first welding portion provided between the first mounting portion and the third extending portion The first welding piece welds and fixes the third extending portion and the first mounting portion.
  • the first mounting portion is welded and fixed to the housing; the linear motor further includes a second welding piece, and the second mounting portion is welded and fixed to the vibrator through the second welding piece.
  • the vibrator is provided with one elastic support member at both ends in the vibration direction.
  • the vibrator includes a mass block and a magnetic steel component fixed to the mass block, the mass block is provided on both sides perpendicular to the vibration direction for avoiding the first mounting portion and all A first escape portion of the third extension portion and a second escape portion for avoiding the second solder piece, the first mounting portion and the third extension portion are spaced apart from the first escape portion, so One end of the second welding piece is welded and fixed to the second escape portion, and the other end is welded and fixed to the second mounting portion.
  • the stator includes a coil assembly
  • the coil assembly includes a coil support fixed to the housing and a coil fixed to the coil support.
  • the elastic support member is bent to form a ring structure through multiple passes, and the stress generated by the vibration of the vibrator is between the two fixed portions of the elastic support member
  • the two extensions of the two bear separately, the elastic support member can reduce stress, reduce the risk of spring breakage, extend its vibration life and improve reliability.
  • FIG. 1 is an exploded view of a three-dimensional structure of a linear motor of the present invention
  • FIG. 2 is a partial exploded view of the new linear motor of the present utility
  • FIG. 3 is a schematic diagram of the main structure of the utility model linear motor.
  • an embodiment of the present invention provides a linear motor 100, the linear motor 100 includes a housing 1 with a housing space 10, a vibrator 2 housed in the housing space 10 And a stator 3 and an elastic support 4 supporting the vibrator 2 suspended in the accommodation 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 housing space 10.
  • the vibrator 2 includes a mass 21 and a magnetic steel component 22 fixed to the mass 21.
  • the mass 21 has a containing space, and the magnetic steel component 22 is fixedly contained in the containing space.
  • the magnetic steel component 22 includes a magnetic steel 221 and a magnetic bowl 222 disposed on the outer periphery of the magnetic steel 221.
  • the stator 3 includes a coil assembly 31, and the coil assembly 31 includes a coil holder 311 fixed to the housing 11 and a coil 312 fixed to the coil holder 311.
  • the coil holder 311 is disposed in the magnetic bowl 222, and the magnetic steel 221 is disposed around the coil holder 311.
  • the vibrator 2 is provided with one elastic support member 4 at each end along the vibration direction, and the vibration direction is the XX direction in FIG. 3, that is, the horizontal direction on.
  • the elastic support member 4 includes a first mounting portion 41 fixed to the housing 1, a second mounting portion 42 disposed opposite to the first mounting portion 41 and fixed to the mass 21, and One end of the first mounting portion 41 is bent to extend to the first extending portion 43 connected to one end of the second mounting portion 42 and approaching the first mounting portion from the other end of the second mounting portion 42 The second extending portion 44 bent and extending in the 41 direction. Place The stress generated by the vibrator 2 during the vibration process is borne by the first extending portion 43 and the second extending portion 44 between the first mounting portion 41 and the second mounting portion 42, compared to the existing two There is only one extension of the elastic support between the mounting parts.
  • the elastic support 4 used in the present invention can reduce stress, reduce the risk of fracture, and extend the life of its vibration.
  • the linear motor 100 has better reliability Sex.
  • the distance between the first extending portion 43 and the second extending portion 44 gradually decreases from the first mounting portion 41 toward the second mounting portion 42.
  • the distance between the first extending portion 43 and the second extending portion 44 gradually increases from the first mounting portion 41 toward the second mounting portion 42, and the first extending portion 43 and Compared with the equidistant setting, the second extending portions 44 are not equidistantly arranged, and the elastic support 4 is less likely to break during vibration.
  • the elastic support member 4 further includes a third extending portion 45 extending from the end of the second extending portion 44 bent in the vibration direction, the third extending portion 45 and the first mounting Section 41 is relatively spaced apart
  • the linear motor 100 further includes a first solder tab 5 provided between the first mounting portion 41 and the third extension portion 45, the first solder tab 5 will The first mounting portion 41 and the third extending portion 45 are fixed by welding, so that the first mounting portion 41, the first extending portion 43, the second mounting portion 42, the second extending portion 44, and the third extending portion 45
  • the secondary connection forms a closed-loop structure, and the structure of the elastic support 4 is more stable, and is not easy to break or fail.
  • the first mounting portion 41 is welded and fixed to the housing 1; the linear motor 100 further includes a second solder tab 6, the second mounting portion 42 passes through the second solder tab 6 and the mass Block 21 is welded and fixed.
  • the mass 21 is provided on both sides perpendicular to the vibration direction with a first avoiding portion 211 for avoiding the first mounting portion 41 and the third extending portion 45 and for avoiding the first The second escape portion 2 12 of the second solder piece 6.
  • the first mounting portion 41 and the third extending portion 45 are spaced apart from the first avoiding portion 211 to provide sufficient vibration space for the mass 21; one end of the second welding piece 6 and the first The second escape portion 212 is welded and fixed, and the other end is welded and fixed to the second mounting portion 42.
  • the elastic support 4 undergoes multiple bending to form a ring structure, and the stress generated by the vibration of the vibrator 2 is caused by two of the elastic support 4 The two extensions between the fixed parts respectively bear, the elastic support 4 is less likely to deform, and the linear motor 100 has better reliability.

Landscapes

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

Abstract

一种线性电机（100），其包括具有收容空间（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），所述弹性支撑件（4）包括与所述外壳（1）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）、自所述第一安装部（41）的一端弯折延伸至与所述第二安装部（42）的一端连接的第一延伸部（43）和自所述第二安装部（42）的另一端向靠近所述第一安装部（41）方向弯折延伸的第二延伸部（44），所述第一安装部（41）、第一延伸部（43）、第二安装部（42）和第二延伸部（44）顺次连接围成环状结构。该线性电机（100）中弹性支撑件（4）经过多道弯折形成环状结构，所述弹性支撑件（4）可以降低应力，不易断裂，提高了线性电机（100）的可靠性。

Description

i
线性电机 技术领域
[0001] 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
[0002] 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。
[0003] 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， 所述弹性支撑件通常呈 U字型， 其一端与外壳连接， 另一端与 振动部件连接， 所述振动部件振动产生的应力全部由弹性支撑件承担， 因此这 种弹性支撑件在振动过程中易发生变形， 导致产品可靠性低。
[0004] 因此， 有必要提供一种新型的线性电机来解决上述问题。
发明概述
技术问题
[0005] 本实用新型的目的在于提供一种弹性支撑件应力较低、 不易断裂、 可靠性高的 线性电机。
问题的解决方案
技术解决方案
[0006] 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、 自所述第一安装部的一端 弯折延伸至与所述第二安装部的一端连接的第一延伸部、 自所述第二安装部的 另一端向靠近所述第一安装部方向弯折延伸的第二延伸部以及自所述第二延伸 部末端弯折延伸的第三延伸部， 所述第三延伸部与所述第一安装部固定连接。
[0007] 优选的， 所述第一延伸部与所述第二延伸部之间的间距自所述第一安装部向所 述第二安装部方向逐渐缩小。
[0008] 优选的， 所述第三延伸部与所述第一安装部相对间隔设置， 所述线性电机还包 括设于所述第一安装部与所述第三延伸部之间的第一焊片， 所述第一焊片将所 述第三延伸部与所述第一安装部焊接固定。
[0009] 优选的， 所述第一安装部与所述外壳焊接固定； 所述线性电机还包括第二焊片 ， 所述第二安装部通过所述第二焊片与所述振子焊接固定。
[0010] 优选的， 所述弹性支撑件为两个， 所述振子在沿振动方向上的两端各设置一个 所述弹性支撑件。
[0011] 优选的， 所述振子包括质量块及与所述质量块固定的磁钢组件， 所述质量块在 沿垂直于振动方向的两侧均设置有用于避让所述第一安装部和所述第三延伸部 的第一避让部及用于避让所述第二焊片的第二避让部， 所述第一安装部和所述 第三延伸部与所述第一避让部间隔设置， 所述第二焊片的一端与所述第二避让 部焊接固定， 另一端与所述第二安装部焊接固定。
[0012] 优选的， 所述定子包括线圈组件， 所述线圈组件包括与所述外壳固定的线圈支 架和固定于所述线圈支架上的线圈。
发明的有益效果
有益效果
[0013] 与相关技术相比， 本实用新型提供的线性电机中弹性支撑件经过多道弯折形成 环状结构， 所述振子振动产生的应力由所述弹性支撑件的两个固定部之间的两 个延伸部分别承担， 所述弹性支撑件可以降低应力， 降低弹簧断裂的风险， 延 长其振动的寿命， 提高可靠性。
对附图的简要说明
附图说明
[0014] 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：
[0015] 图 1为本实用新型线性电机的立体结构分解图；
[0016] 图 2为本实用新线性电机的局部分解图；
[0017] 图 3为本实用新型线性电机的主体结构示意图。
发明实施例
具体实施方式
[0018] 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。
[0019] 请参阅图 1-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 10 0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。
[0020] 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 1 0的盖板 12。
[0021] 所述振子 2包括质量块 21和与所述质量块 21固定的磁钢组件 22。 所述质量块 21 具有容纳空间， 所述磁钢组件 22固定收容于所述容纳空间内。 所述磁钢组件 22 包括磁钢 221和设置于所述磁钢 221外周的磁碗 222。
[0022] 所述定子 3包括线圈组件 31， 所述线圈组件 31包括固定于所述壳体 11上的线圈 支架 311和固定于所述线圈支架 311上的线圈 312。 所述线圈支架 311设于所述磁 碗 222内， 所述磁钢 221环绕所述线圈支架 311设置。
[0023] 所述弹性支撑件 4为两个， 所述振子 2在沿振动方向上的两端各设置一个所述弹 性支撑件 4， 所述振动方向为图 3中的 X-X方向， 即水平方向上。
[0024] 所述弹性支撑件 4包括与所述外壳 1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质量块 21固定的第二安装部 42、 自所述第一安装部 41的 一端弯折延伸至与所述第二安装部 42的一端连接的第一延伸部 43和自所述第二 安装部 42的另一端向靠近所述第一安装部 41方向弯折延伸的第二延伸部 44。 所 述振子 2在振动过程中产生的应力由所述第一安装部 41与所述第二安装部 42之间 的第一延伸部 43和第二延伸部 44两部分承担， 相较于现有两个安装部之间只设 置一个延伸部的弹性支撑件， 本实用新型所采用的弹性支撑件 4可以降低应力， 降低断裂的风险， 延长其振动的寿命， 所述线性电机 100具有更佳的可靠性。
[0025] 进一步地， 所述第一延伸部 43与所述第二延伸部 44之间的间距自所述第一安装 部 41向所述第二安装部 42方向逐渐缩小。 当然， 所述第一延伸部 43与所述第二 延伸部 44之间的间距自所述第一安装部 41向所述第二安装部 42方向逐渐增大， 所述第一延伸部 43与所述第二延伸部 44之间采用不等距设置相较于等距设置， 所述弹性支撑件 4在振动过程中不易发生断裂。
[0026] 更进一步地， 所述弹性支撑件 4还包括自所述第二延伸部 44末端沿振动方向弯 折延伸的第三延伸部 45 , 所述第三延伸部 45与所述第一安装部 41相对间隔设置
[0027] 更进一步地， 所述线性电机 100还包括设于所述第一安装部 41与所述第三延伸 部 45之间的第一焊片 5 , 所述第一焊片 5将所述第一安装部 41和所述第三延伸部 4 5焊接固定， 使所述第一安装部 41、 第一延伸部 43、 第二安装部 42、 第二延伸部 44、 第三延伸部 45顺次连接围成闭环结构， 所述弹性支撑件 4的结构更稳定， 不 易断裂失效。
[0028] 所述第一安装部 41与所述外壳 1焊接固定； 所述线性电机 100还包括第二焊片 6 ， 所述第二安装部 42通过所述第二焊片 6与所述质量块 21焊接固定。
[0029] 所述质量块 21在沿垂直于振动方向的两侧均设置有用于避让所述第一安装部 41 和所述第三延伸部 45的第一避让部 211及用于避让所述第二焊片 6的第二避让部 2 12。 所述第一安装部 41和所述第三延伸部 45与所述第一避让部 211间隔设置， 给 所述质量块 21足够的振动空间； 所述第二焊片 6的一端与所述第二避让部 212焊 接固定， 另一端与所述第二安装部 42焊接固定。
[0030] 装配时， 首先将所述弹性支撑件 4的第一安装部 41与第三延伸部 45通过第一焊 片 5焊接在一起， 然后分别将所述第一安装部 41与外壳 1焊接固定， 所述第二安 装部 42通过第一焊片 6与所述质量块 21焊接固定， 最后再装配所述线性电机 100 的其它零件。 [0031] 与相关技术相比， 本实用新型提供的线性电机 100中弹性支撑件 4经过多道弯折 形成环状结构， 所述振子 2振动产生的应力由所述弹性支撑件 4的两个固定部之 间的两个延伸部分别承担， 所述弹性支撑件 4更不易变形， 所述线性电机 100具 有更佳的可靠性。
[0032] 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

权利要求书
[权利要求 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， 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、 自所 述第一安装部的一端弯折延伸至与所述第二安装部的一端连接的第一 延伸部、 自所述第二安装部的另一端向靠近所述第一安装部方向弯折 延伸的第二延伸部以及自所述第二延伸部末端弯折延伸的第三延伸部 ， 所述第三延伸部与所述第一安装部固定连接。
[权利要求 2] 根据权利要求 1所述的线性电机， 其特征在于， 所述第一延伸部与所 述第二延伸部之间的间距自所述第一安装部向所述第二安装部方向逐 渐缩小。
[权利要求 3] 根据权利要求 2所述的线性电机， 其特征在于， 所述第三延伸部与所 述第一安装部相对间隔设置， 所述线性电机还包括设于所述第一安装 部与所述第三延伸部之间的第一焊片， 所述第一焊片将所述第三延伸 部与所述第一安装部焊接固定。
[权利要求 4] 根据权利要求 3所述的线性电机， 其特征在于， 所述第一安装部与所 述外壳焊接固定； 所述线性电机还包括第二焊片， 所述第二安装部通 过所述第二焊片与所述振子焊接固定。
[权利要求 5] 根据权利要求 4所述的线性电机， 其特征在于， 所述弹性支撑件为两 个， 所述振子在沿振动方向上的两端各设置一个所述弹性支撑件。
[权利要求 6] 根据权利要求 5所述的线性电机， 其特征在于， 所述振子包括质量块 及与所述质量块固定的磁钢组件， 所述质量块在沿垂直于振动方向的 两侧均设置有用于避让所述第一安装部和所述第三延伸部的第一避让 部及用于避让所述第二焊片的第二避让部， 所述第一安装部和所述第 三延伸部与所述第一避让部间隔设置， 所述第二焊片的一端与所述第 二避让部焊接固定， 另一端与所述第二安装部焊接固定。
[权利要求 7] 根据权利要求 1所述的线性电机， 其特征在于， 所述定子包括线圈组 件， 所述线圈组件包括与所述外壳固定的线圈支架和固定于所述线圈 支架上的线圈。
PCT/CN2019/113359 2018-12-29 2019-10-25 线性电机 WO2020134472A1 (zh)

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