WO2020134475A1 - 振动电机 - Google Patents

振动电机 Download PDF

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Publication number
WO2020134475A1
WO2020134475A1 PCT/CN2019/113374 CN2019113374W WO2020134475A1 WO 2020134475 A1 WO2020134475 A1 WO 2020134475A1 CN 2019113374 W CN2019113374 W CN 2019113374W WO 2020134475 A1 WO2020134475 A1 WO 2020134475A1
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WIPO (PCT)
Prior art keywords
vibration motor
vibration
housing
mass
motor according
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/CN2019/113374
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English (en)
French (fr)
Inventor
崔志勇
汤赟
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 Holdings Nanjing Co Ltd
Original Assignee
AAC Acoustic Technologies Shenzhen Co Ltd
AAC Technologies Holdings Nanjing Co Ltd
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Application filed by AAC Acoustic Technologies Shenzhen Co Ltd, AAC Technologies Holdings Nanjing Co Ltd filed Critical AAC Acoustic Technologies Shenzhen Co Ltd
Publication of WO2020134475A1 publication Critical patent/WO2020134475A1/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
    • 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
    • H02K33/16—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 the technical field of electromagnetic moving parts, in particular to a vibration motor.
  • a vibration motor is a component that uses electromagnetic force generation principles to convert electrical energy into mechanical energy.
  • the vibration motor is usually installed in electronic products such as portable phones to generate silent feedback signals.
  • the purpose of the present utility model is to overcome the above technical problems and provide a solution to the problem of a vibration motor where the limit block is not easy to fall off
  • the present invention provides a vibration motor, including an elastic support member, a fixing member and a vibration member
  • the fixing member includes a housing with a housing space
  • the elastic support member suspends the vibration member Supported in the receiving space
  • the vibration motor further includes a limit block fixedly connected to the housing, the limit block includes a horizontal portion and extends from the horizontal portion along the vibration direction and toward the direction of the housing The vertical part.
  • the vibrating component includes a mass fixedly connected to the elastic support, the mass is rectangular, the mass includes a first side wall disposed along the long axis direction and a short axis direction The second side wall is provided, and the horizontal portion is provided along the second side wall.
  • the mass block includes a first end surface and a second end surface that are parallel to the vibration direction and oppositely disposed, and the mass block further includes a direction from the first end surface along the first side wall A first escape portion recessed in the second end surface and a second escape portion recessed from the second end surface along the first side wall toward the first end surface.
  • the limit block is welded and fixed to the housing and the horizontal portion of the limit block is provided corresponding to the position of the first escape portion and the second escape portion.
  • one end of the vertical portion is connected to the horizontal portion, and the other end is in contact with the housing.
  • the vertical portion includes a missing corner portion, the missing corner portion is provided at an end of the vertical portion away from the horizontal portion.
  • the elastic support member includes a first fixing portion connected to the housing and a second fixing portion connected to the mass, the missing corner portion is provided in the vertical portion close to the One side of the second fixing part
  • the elastic support member is provided with a notch to give way to the limiting block corresponding to the position of the limiting block.
  • the vibration motor provided by the utility model can effectively solve the problem that the vibration component hits the housing and causes the vibration motor to fail;
  • the limit block is made into a T-shaped, T-shaped limit block
  • the large contact area with the base plate can increase the welding area with the shell.
  • the end of the vertical part of the T-shaped limit block away from the horizontal part contacting the shell can make the shell bear part of the impact force, which can reduce the deformation and limit of the shell Risk of falling off of the bit block;
  • a foolproof design is added to the vertical portion of the T-shaped limit block, and the front and back sides of the limit block can be distinguished during assembly.
  • FIG. 1 is a main structural view of a vibration motor provided by the utility model
  • FIG. 2 is an exploded view of a vibration motor provided by the utility model
  • FIG. 3 is a cross-sectional view of a vibration motor provided by the utility model
  • FIG. 4 is a front and back structural diagram of a limiting block provided by the utility model.
  • the present invention provides a vibration motor 100, including an elastic support member 30, a fixing member 2 and a vibrating member 3, the fixing member 2 includes a housing 21 with a housing space, The elastic support 30 suspends and supports the vibration member 3 in the receiving space.
  • the housing 21 includes a frame body 211 and upper cover body 212 and lower cover body 213 provided at opposite ends of the frame body 211 and cooperating with it to form a receiving space, it should be noted that The upper cover 212 and the lower cover 213 are only used to distinguish the two covers, and are not used to fix and indicate a certain cover.
  • the fixing member 2 further includes a coil holder 22 fixed to the upper cover 212, a coil 23 fixed to the holder 22, and a flexible circuit board 24 electrically connected to the coil 23,
  • the coil 23 and the magnetic steel assembly 32 are opposed to each other and spaced apart from each other.
  • the housing 21, the coil holder 22, the coil 23, and the flexible circuit board 24 constitute the fixing member 2 of the vibration motor 100.
  • the fixing component is not limited to the above-mentioned combination of components, and any component whose position does not change in the vibration motor 100 may be called a fixing component.
  • the vibrating member 3 includes a receiving hole in the middle of the mass 31, and the vibrating member 3 further includes a magnetic steel component 32 provided in the receiving hole in the middle of the mass 31.
  • the magnetic steel assembly 32 includes a magnetic steel 321 and a magnetic bowl 322 fixed between the magnetic steel 321 and the mass 31.
  • the mass 31 and the magnetic steel assembly 32 constitute the vibration member 3 of the vibration motor 100.
  • the vibration member is not limited to the combination of the above-mentioned components.
  • the portion where the electromagnetic induction force between the coil 23 and the magnetic steel assembly 32 reciprocates in the housing space of the housing Both can be called vibration parts.
  • the mass 31 is fixedly connected to the elastic support 30, the mass 31 is rectangular, and includes a first side wall 311 disposed along the long axis direction, and a second disposed along the short axis direction The side wall 312 and the first end face 313 and the second end face 314 which are parallel to the vibration direction and oppositely arranged.
  • the mass 31 further includes a first escape portion 315 recessed from the first end surface 313 toward the second end surface 314 along the first side wall 311 and along the first side from the second end surface 314
  • the wall 311 is recessed toward the second escape portion 316 of the first end surface 313.
  • the vibration motor 100 further includes a limit block 4, the limit block 4 is disposed between the vibration member 3 and the housing 21 to prevent the vibration member 3 and the housing 21 from direct contact, Moreover, the elastic support member 30 is provided with a notch 301 to allow the limiting block 4 to correspond to the position of the limiting block 4.
  • the number of the limiting blocks 4 is two pairs, two pairs of the limiting blocks 4 are fixedly disposed on the upper cover 212 and the lower cover 213 and the limit The positioning block 4 is fixed to the upper cover 212 and the lower cover 213 by welding.
  • the limiting block 4 may be disposed in the vibration direction of the vibrating member 3 and held at The vibrating component 3; as an optional alternative, the limiting block 4 is disposed in the vibrating direction of the vibrating component 3 and is held by the elastic connector 30.
  • the limit block 4 is T-shaped, which includes a horizontal portion 41 disposed away from the housing 21 and a vertical portion 42 formed from the middle of the horizontal portion 41 toward the direction of the housing 21,
  • the horizontal portion 41 is disposed perpendicular to the vibration direction of the vibration motor; preferably, the horizontal portion 41 and the vertical portion 42 may be separately formed and consolidated, or may be the horizontal
  • the portion 42 is integrally formed with the vertical portion 41.
  • the horizontal portion 41 is provided along the second side wall 312 and the limit block 4 is provided corresponding to the positions of the first avoiding portion 315 and the second avoiding portion 316, the vertical One end of the straight portion 42 is connected to the horizontal portion 41, and the other end is in contact with the frame 211.
  • the vertical portion 41 includes a corner portion 43, the corner portion 43 is disposed at the end of the vertical portion 42 away from the horizontal portion 41
  • the elastic support 30 includes a first fixing portion 302 connected to the housing 21 and a second fixing portion 303 connected to the mass 31, the corner portion 43 is disposed near the vertical portion 42 One side of the second fixing portion 303.
  • Such a structure facilitates distinguishing the front surface of the limiting block 4 before welding and welding the front surface of the limiting block 4 to the upper cover 212 or the lower cover 213 to prevent the limiting block 4
  • the assembly fashion with the housing 21 is wrong (surface a in FIG. 4), reverse Face (face b in Figure 4).
  • the vibration motor provided by the utility model can effectively solve the problem that the vibration component hits the housing and causes the vibration motor to fail;
  • the limit block is made into a T-shaped, T-shaped limit block
  • the large contact area with the base plate can increase the welding area with the shell.
  • the end of the vertical part of the T-shaped limit block away from the horizontal part contacting the shell can make the shell bear part of the impact force, which can reduce the deformation and limit of the shell Risk of falling off of the bit block;
  • a foolproof design is added to the vertical portion of the T-shaped limit block, and the front and back sides of the limit block can be distinguished during assembly.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Mechanical Engineering (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
  • Motor Or Generator Frames (AREA)

Abstract

一种振动电机（100），包括弹性支撑件（30）、固定部件（2）和振动部件（3），该固定部件（2）包括具有收容空间的外壳（21），该弹性支撑件（30）将该振动部件（3）悬置支撑于该收容空间内，该振动电机（100）还包括与该外壳（21）固接的限位块（4），该限位块（4）包括水平部（41）以及自该水平部（41）沿振动方向且朝向该外壳（21）方向延伸的竖直部（42）。该振动电机的限位块（4）不易脱落。

Description

振动电机 技术领域
[0001] 本实用新型涉及电磁运动件技术领域， 尤其涉及一种振动电机。
背景技术
[0002] 振动电机是一种利用电磁力的产生原理将电能转化为机械能的部件， 振动电机 通常安装在便携式电话等电子产品内， 以产生无声的反馈信号。
[0003] 振动电机工作时需要保证有足够大的驱动力， 大的驱动力会导致振动部件的振 幅过大， 当振动部件的振幅大于振动电机的最大振动空间时， 就会出现振动部 件撞击外壳的现象， 从而导致振动电机撞击失效和产生撞击噪声。
[0004] 另外， 相关技术中的振动电机在质量块撞击限位块时， 限位块受很大的扭矩导 致盖体发生变形， 且限位块易脱落。
[0005] 因此， 有必要提供一种新的振动电机来解决上述问题。
发明概述
技术问题
[0006] 本实用新型的目的是克服上述技术问题， 提供一种限位块不易脱落的振动电机 问题的解决方案
技术解决方案
[0007] 为了实现上述目的， 本实用新型提供一种振动电机， 包括弹性支撑件、 固定部 件和振动部件， 所述固定部件包括具有收容空间的外壳， 所述弹性支撑件将所 述振动部件悬置支撑于所述收容空间内， 所述振动电机还包括与所述外壳固接 的限位块， 所述限位块包括水平部以及自所述水平部沿振动方向且朝向所述外 壳方向延伸的竖直部。
[0008] 优选的， 所述振动部件包括与所述弹性支撑件固定连接的质量块， 所述质量块 呈矩形， 所述质量块包括沿长轴方向设置的第一侧壁以及沿短轴方向设置的第 二侧壁， 所述水平部沿所述第二侧壁设置。 [0009] 优选的， 所述质量块包括平行于所述振动方向且相对设置的第一端面和第二端 面， 所述质量块还包括自所述第一端面沿所述第一侧壁朝向所述第二端面凹陷 的第一避让部和自所述第二端面沿所述第一侧壁朝向所述第一端面凹陷的第二 避让部。
[0010] 优选的， 所述限位块与所述外壳焊接固定且所述限位块的所述水平部对应所述 第一避让部和所述第二避让部的位置设置。
[0011] 优选的， 所述竖直部一端与所述水平部连接， 另一端与所述外壳抵接。
[0012] 优选的， 所述竖直部包括缺角部， 所述缺角部设置于所述竖直部的远离所述水 平部的一端。
[0013] 优选的， 所述弹性支撑件包括与所述外壳连接的第一固定部以及与所述质量块 连接的第二固定部， 所述缺角部设置于所述竖直部靠近所述第二固定部的一侧
[0014] 优选的， 所述弹性支撑件对应所述限位块的位置设有让位所述限位块的缺口。
发明的有益效果
有益效果
[0015] 与相关技术相比， 本实用新型提供的振动电机的可以有效解决振动部件撞击外 壳导致振动电机失效的问题； 另外， 将限位块制作成 T字型， T字型的限位块与 底板接触面积大可使其与外壳的焊接面积增大， T字型限位块的竖直部远离水平 部的一端与外壳抵接可使外壳承担部分冲击力， 可减小外壳变形和限位块脱落 的风险； 最后， 在 T字型限位块的竖直部上添加了防呆设计， 在装配时可辨别限 位块的正反面。
对附图的简要说明
附图说明
[0016] 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：
[0017] 图 1为本实用新型提供的振动电机的主体结构图； [0018] 图 2为本实用新型提供的振动电机的分解图；
[0019] 图 3为本实用新型提供的振动电机的剖视图；
[0020] 图 4为本实用新型提供的限位块的正、 反面结构图。
发明实施例
具体实施方式
[0021] 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。
[0022] 请结合参阅图 1和图 2， 本实用新型提供一种振动电机 100， 包括弹性支撑件 30 、 固定部件 2和振动部件 3 , 所述固定部件 2包括具有收容空间的外壳 21， 所述弹 性支撑件 30将所述振动部件 3悬置支撑于所述收容空间内。
[0023] 在本实施方式中， 所述外壳 21包括框体 211及设置于所述框体 211相对两端并与 之配合形成收容空间的上盖体 212和下盖体 213 , 需要说明的是， 所述上盖体 212 与所述下盖体 213只是用于区分两个盖体， 并不用于固定指示某一盖体。
[0024] 所述固定部件 2还包括固设于所述上盖体 212的线圈支架 22、 固设于所述支架 22 的线圈 23及与所述线圈 23电连接的柔性电路板 24， 所述线圈 23和所述磁钢组件 3 2中心相对且间隔设置， 在本实施方式中所述外壳 21、 线圈支架 22、 线圈 23以及 柔性线路板 24构成所述振动电机 100的所述固定部件 2, 当然， 固定部件不以上 述部件组合为限， 在所述振动电机 100中位置不会发生变化的部件均可称作固定 部件。
[0025] 请参阅图 2和图 3， 所述振动部件 3包括质量块 31中部设有收容孔， 所述振动部 件 3还包括设置于所述质量块 31中部收容孔的磁钢组件 32， 所述磁钢组件 32包括 磁钢 321及固定于所述磁钢 321和所述质量块 31之间的磁碗 322。 在本实施方式中 所述质量块 31和所述磁钢组件 32构成所述振动电机 100的所述振动部件 3， 当然 振动部件不以上述部件组合为限， 在所述振动电机 100中受到所述线圈 23和所述 磁钢组件 32之间的电磁感应力的作用而在所述外壳的收容空间内往复运动的部 均可称作振动部件。
[0026] 另外， 所述质量块 31与所述弹性支撑件 30固定连接， 所述质量块 31呈矩形， 其 包括沿长轴方向设置的第一侧壁 311、 沿短轴方向设置的第二侧壁 312及平行于 所述振动方向且相对设置的第一端面 313和第二端面 314。 所述质量块 31还包括 自所述第一端面 313沿所述第一侧壁 311朝向所述第二端面 314凹陷的第一避让部 315和自所述第二端面 314沿所述第一侧壁 311朝向所述第一端面 313凹陷的第二 避让部 316。
[0027] 所述振动电机 100还包括限位块 4, 所述限位块 4设置于所述振动部件 3和所述外 壳 21之间以防止所述振动部件 3和所述外壳 21直接接触， 而且， 所述弹性支撑件 30对应所述限位块 4的位置设有让位所述限位块 4的缺口 301。
[0028] 在本实施方式中， 所述限位块 4的数量为两对， 两对所述限位块 4分别固定设置 于所述上盖体 212和所述下盖体 213且所述限位块 4与所述上盖体 212和所述下盖 体 213通过焊接固定， 当然， 作为可选替换方式， 所述限位块 4可设置于所述振 动部件 3的振动方向上并固持于所述振动部件 3 ; 作为可选替换方式， 所述限位 块 4设置于所述振动部件 3的振动方向上并固持于所述弹性连接件 30。
[0029] 具体的， 所述限位块 4呈 T字型， 其包括远离所述外壳 21设置的水平部 41及自所 述水平部 41中部向所述外壳 21方向形成的竖直部 42, 优选的， 所述水平部 41沿 垂直于所述振动电机的振动方向设置； 优选的， 所述水平部 41与所述竖直部 42 可以分体制作后固结形成， 也可以为所述水平部 42与所述竖直部 41一体成型。
[0030] 具体的， 所述水平部 41沿所述第二侧壁 312设置且所述限位块 4对应所述第一避 让部 315和所述第二避让部 316的位置设置， 所述竖直部 42—端与所述水平部 41 连接， 另一端与所述框体 211抵接。
[0031] 请结合参阅图 2、 图 3和图 4， 所述竖直部 41包括缺角部 43， 所述缺角部 43设置 于所述竖直部 42的远离所述水平部 41的一端， 所述弹性支撑件 30包括与所述外 壳 21连接的第一固定部 302以及与所述质量块 31连接的第二固定部 303 , 所述缺 角部 43设置于所述竖直部 42靠近所述第二固定部 303的一侧。 这样的结构方便在 焊接前区分出所述限位块的 4正面并将所述限位块 4的正面与所述上盖体 212或所 述下盖体 213焊接， 防止所述限位块 4与所述外壳 21装配时装错正（图 4中 a面）、 反 面（图 4中 b面）。
[0032] 与相关技术相比， 本实用新型提供的振动电机的可以有效解决振动部件撞击外 壳导致振动电机失效的问题； 另外， 将限位块制作成 T字型， T字型的限位块与 底板接触面积大可使其与外壳的焊接面积增大， T字型限位块的竖直部远离水平 部的一端与外壳抵接可使外壳承担部分冲击力， 可减小外壳变形和限位块脱落 的风险； 最后， 在 T字型限位块的竖直部上添加了防呆设计， 在装配时可辨别限 位块的正反面。
[0033] 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] 一种振动电机， 包括弹性支撑件、 固定部件和振动部件， 所述固定部 件包括具有收容空间的外壳， 所述弹性支撑件将所述振动部件悬置支 撑于所述收容空间内， 其特征在于， 所述振动电机还包括与所述外壳 固接的限位块， 所述限位块包括水平部以及自所述水平部沿振动方向 且朝向所述外壳方向延伸的竖直部。
[权利要求 2] 根据权利要求 1所述的振动电机， 其特征在于， 所述振动部件包括与 所述弹性支撑件固定连接的质量块， 所述质量块呈矩形， 所述质量块 包括沿长轴方向设置的第一侧壁以及沿短轴方向设置的第二侧壁， 所 述水平部沿所述第二侧壁设置。
[权利要求 3] 根据权利要求 2所述的振动电机， 其特征在于， 所述质量块包括平行 于所述振动方向且相对设置的第一端面和第二端面， 所述质量块还包 括自所述第一端面沿所述第一侧壁朝向所述第二端面凹陷的第一避让 部和自所述第二端面沿所述第一侧壁朝向所述第一端面凹陷的第二避 让部。
[权利要求 4] 根据权利要求 3所述的振动电机， 其特征在于， 所述限位块与所述外 壳焊接固定且所述限位块对应所述第一避让部和所述第二避让部的位 置设置。
[权利要求 5] 根据权利要求 1所述的振动电机， 其特征在于， 所述竖直部一端与所 述水平部连接， 另一端与所述外壳抵接。
[权利要求 6] 根据权利要求 2所述的振动电机， 其特征在于， 所述竖直部包括缺角 部， 所述缺角部设置于所述竖直部的远离所述水平部的一端。
[权利要求 7] 根据权利要求 6所述的振动电机， 其特征在于， 所述弹性支撑件包括 与所述外壳连接的第一固定部以及与所述质量块连接的第二固定部， 所述缺角部设置于所述竖直部靠近所述第二固定部的一侧。
[权利要求 8] 根据权利要求 1所述的振动电机， 其特征在于， 所述弹性支撑件对应 所述限位块的位置设有让位所述限位块的缺口。
PCT/CN2019/113374 2018-12-29 2019-10-25 振动电机 Ceased WO2020134475A1 (zh)

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