WO2021168939A1 - 线性振动电机 - Google Patents

线性振动电机 Download PDF

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Publication number
WO2021168939A1
WO2021168939A1 PCT/CN2020/080104 CN2020080104W WO2021168939A1 WO 2021168939 A1 WO2021168939 A1 WO 2021168939A1 CN 2020080104 W CN2020080104 W CN 2020080104W WO 2021168939 A1 WO2021168939 A1 WO 2021168939A1
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WIPO (PCT)
Prior art keywords
arm
fixed
elastic
elastic arm
housing
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PCT/CN2020/080104
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English (en)
French (fr)
Inventor
毛路斌
钟文
Original Assignee
瑞声声学科技(深圳)有限公司
瑞声光电科技(常州)有限公司
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Publication of WO2021168939A1 publication Critical patent/WO2021168939A1/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
    • H02K33/02—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

Definitions

  • the utility model relates to a vibration motor, in particular to a linear vibration motor used for portable consumer electronic products.
  • vibration motors for system feedback, such as mobile phones. Incoming call reminder, information reminder, navigation reminder, vibration feedback of game console, etc.
  • vibration motor to have high performance, good stability and long service life.
  • a related art linear vibration motor which includes a housing with a housing space, a vibration unit placed in the housing space, an elastic member that suspends the vibration unit in the housing space, and a housing fixed to the housing.
  • a coil assembly that drives the vibration unit to vibrate.
  • the elastic members include two and are respectively located on opposite sides of the vibrating unit along the vibration direction thereof, and each of the elastic members includes an elastic arm, a A connecting arm and a second connecting arm; the first connecting arm is fixed to the vibration unit, and the second connecting arm is fixed to the housing.
  • the elastic arm of the elastic member has a C-shaped structure, and the first connecting arm and the second connecting arm are both flat-plate structures fixed to the vibration unit or the housing, so that the When the elastic arm deforms, the stress is relatively large, which makes it difficult to further increase the working amplitude of the vibration unit, which limits the vibration performance of the linear vibration motor.
  • the purpose of the utility model is to provide a linear vibration motor with high vibration volume and better vibration performance.
  • the present invention provides a linear vibration motor, which includes a housing with a housing space, a vibration unit, an elastic member that suspends the vibration unit in the housing space, and is fixed to the housing And drive the vibration unit to vibrate the coil assembly, the vibration unit includes a mass; the elastic member includes a first fixed arm fixed to the housing, a second fixed arm fixed to the mass, and a connecting station The elastic arms of the first fixed arm and the second fixed arm, the first fixed arm and the second fixed arm are respectively located on opposite sides of the mass; the elastic arm includes at least one bent form The bending part.
  • At least one of the ends of the elastic arm connected with the first fixed arm and the second fixed arm is bent to form the bent portion, and the first fixed arm and/or the first fixed arm
  • the two fixed arms are connected with the elastic arm through the bending part.
  • the elastic arm includes a first elastic arm and a second elastic arm that are respectively arranged on opposite sides of the mass and spaced apart from the housing, and are connected to the first elastic arm and the second elastic arm.
  • the arm is connected with the third elastic arm; the bent portion is formed in at least one of the first elastic arm and the second elastic arm.
  • the bent portion is formed at an end of the first elastic arm and/or the second elastic arm away from the third elastic arm.
  • the bending portion includes a first bend, and the first bend is formed to protrude toward the mass block.
  • the bent portion further includes a second bend connected to the first bend, and the second bend is formed to protrude in a direction away from the mass.
  • a side of the mass block close to the second elastic arm is recessed toward the inside of the mass block to form a relief groove, and the bent portion is arranged directly opposite to the relief groove.
  • the elastic member further includes a first welding tab fixed to the side of the first fixed arm away from the housing, and a second welding tab fixed to the side of the second fixed arm away from the mass block .
  • the first fixed arm and the housing, and the second fixed arm and the mass block are all fixed by welding.
  • the elastic member includes two and is respectively located on opposite sides of the vibration unit along its vibration direction, and the mass includes a first wall and a second wall that are perpendicular to the vibration direction of the vibration unit and are arranged opposite to each other.
  • the first fixing arm of one of the elastic members is fixed to a side of the housing close to the first wall, and the second fixing arm of the elastic member is fixed to the second wall;
  • the first fixing arm of the other elastic element is fixed to a side of the housing close to the second wall, and the second fixing arm of the elastic element is fixed to the first wall.
  • the elastic member in the linear vibration motor of the present invention includes a first fixed arm fixed to the housing, a second fixed arm fixed to the mass, and a connection to the first fixed arm.
  • the elastic arm of the arm and the second fixed arm, the first fixed arm and the second fixed arm are respectively located on opposite sides of the mass; the elastic arm includes at least one bent portion formed by bending .
  • the configuration of this structure increases the deformation arm of the elastic member, effectively reduces the deformation stress, further improves the working amplitude of the linear vibration motor, and increases the vibration amount of the linear vibration motor. Therefore, the vibration performance of the linear vibration motor is better.
  • Figure 1 is a schematic diagram of the three-dimensional structure of the linear vibration motor of the utility model
  • FIG. 2 is an exploded schematic diagram of the three-dimensional structure of the linear vibration motor of the embodiment 1 of the utility model
  • FIG. 3 is a schematic diagram of the three-dimensional structure of the linear vibration motor according to the first embodiment of the utility model with the upper shell removed;
  • FIG. 4 is a schematic diagram of the three-dimensional structure of the elastic member of the first embodiment of the present invention.
  • FIG. 5 is an exploded schematic diagram of the three-dimensional structure of the linear vibration motor of the second embodiment of the utility model
  • FIG. 6 is an exploded schematic diagram of the three-dimensional structure of the linear vibration motor of the third embodiment of the utility model
  • FIG. 7 is an exploded schematic diagram of the three-dimensional structure of the linear vibration motor of the embodiment 4 of the utility model
  • FIG. 8 is a schematic diagram of the three-dimensional structure of the linear vibration motor according to the fourth embodiment of the utility model with the upper shell removed;
  • FIG. 9 is a schematic diagram of the three-dimensional structure of the elastic member according to Embodiment 4 of the present invention.
  • the present invention provides a linear vibration motor 100, which includes a housing 1, a vibration unit 2, and an elastic member 3 that suspends the vibration unit 2 in the accommodation space.
  • the coil assembly 4 and the upper housing 5 that are fixed to the housing 1 and drive the vibration unit 2 to vibrate.
  • the vibration unit 2 includes a mass block 21 and a magnet 22 embedded in the mass block 21.
  • the coil assembly 4 is fixed to the bottom wall of the housing 1.
  • the magnet 22 includes 4 groups and 4 groups.
  • the magnetic steel 22 is arranged around the coil assembly 4.
  • the elastic member 3 includes a first fixed arm 31 fixed to the housing 1, a second fixed arm 32 fixed to the mass 21, and a connection between the first fixed arm 31 and the second fixed arm 32
  • the elastic arms 33 are located on opposite sides of the mass 21, respectively.
  • the elastic arm 33 includes at least one bent portion 34 formed by bending.
  • the number, shape, position, and structure of the bending portions 34 are not limited, and they can be specifically set according to actual design requirements.
  • the two ends of the elastic arm 33 connected to the first fixed arm 31 and the second fixed arm 32 are respectively bent to form two bent portions 34,
  • the first fixed arm 31 and the second fixed arm 32 are connected to the elastic arm 33 through the bent portion 34.
  • the elastic arm 33 includes a first elastic arm 331 and a second elastic arm 332 which are respectively arranged on opposite sides of the mass 21 and spaced apart from the housing 1, and connected to the first elastic arm 331 and the third elastic arm 333 of the second elastic arm 332 and spaced from the mass 21; the first fixed arm 31 is connected to the third elastic arm 333 through the first elastic arm 331, The second fixed arm 32 is connected to the third elastic arm 333 through the second elastic arm 332; two bending parts 34 are formed on the first elastic arm 331 and the second elastic arm 332 .
  • the bent portion 34 is formed at one end of the first elastic arm 331 and the second elastic arm 332 away from the third elastic arm 333.
  • the arrangement of the two bending portions 34 increases the deformation arm of the elastic member 3, effectively reduces the deformation stress, further improves the working amplitude of the linear vibration motor 100, and increases The amount of vibration of the linear vibration motor 100.
  • the vibration performance of the linear vibration motor 100 is better.
  • the bending portion 34 includes a first bend 341, and the first bend 341 is formed to protrude toward the direction of the mass 21.
  • the number, shape, and position of the bending portion 34 can be specifically set according to actual design requirements.
  • the elastic member 3 includes two and is respectively located on opposite sides of the vibration unit 2 along its vibration direction, and the mass 21 includes a first wall perpendicular to the vibration direction of the vibration unit 2 and disposed opposite to each other. 211 and the second wall 212, in which the first fixing arm 31 of one of the elastic members 3 is fixed on the side of the housing 1 close to the first wall 211, and the first fixing arm 31 of the elastic member 3 Two fixed arms 32 are fixed to the second wall 212; the first fixed arm 31 of the other elastic member 3 is fixed to the side of the housing 1 close to the second wall 212, and the elastic The second fixing arm 32 of the piece 3 is fixed to the first wall 211.
  • the side of the mass block 21 close to the second elastic arm 332 is recessed to form a relief groove 213 inside the mass block 21, and the bent portion 34 is arranged directly opposite to the relief groove 213 .
  • the arrangement of the relief groove 213 can avoid the mutual interference with the bending portion 34 to a large extent, and the bending portion 34 can be designed to utilize more space and improve the vibration performance.
  • the elastic member 3 also includes a first welding lug 35 fixed on the side of the first fixing arm 31 away from the housing 1, and a first welding piece 35 fixed on the side of the second fixing arm 32 away from the mass 21. Two soldering piece 36.
  • the arrangement of this structure increases the overall strength of the linear vibration motor 100, improves the stability of the linear vibration motor 100, and further improves the vibration performance of the linear vibration motor 100.
  • first fixed arm 31 and the housing 1 and the second fixed arm 32 and the mass 21 are all fixed by welding, which is not limited thereto.
  • the sound emitting device 100a of Embodiment 2 is basically the same as the sound emitting device of Embodiment 1, and the same parts will not be repeated here.
  • Embodiment 2 Different from the structure of the elastic member of the first embodiment, the structure of the elastic member of the sound generating device 100a of the second embodiment will be explained in detail below:
  • the elastic member 3a includes a first fixed arm 31a fixed to the housing 1, a second fixed arm 32a fixed to the mass 21, and a connection between the first fixed arm 31a and the second fixed arm 32a
  • the elastic arm 33a, the first fixed arm 31a and the second fixed arm 32a are located on opposite sides of the mass 21, respectively.
  • the elastic arm 33a includes at least one bent portion 34a formed by bending.
  • the number, shape, position, and structure of the bending portions 34a are not limited, and they can be specifically set according to actual design requirements.
  • the end connecting the elastic arm 33a and the first fixed arm 31a is bent to form the bent portion 34a, and the first fixed arm 31a is connected to the bent portion 34a through the bent portion 34a.
  • the elastic arm 33a is connected.
  • the elastic arm 33a includes a first elastic arm 331a and a second elastic arm 332a which are respectively arranged on opposite sides of the mass 21 and spaced apart from the housing 1, and connected to the first elastic arm 331a and the third elastic arm 333a of the second elastic arm 332a and spaced apart from the mass 21; the first fixed arm 31a is connected to the third elastic arm 333a through the first elastic arm 331a, The second fixed arm 32a is connected to the third elastic arm 333a through the second elastic arm 332a; the bent portion 34 is formed on the first elastic arm 331a. In this embodiment, the bent portion 34a is formed at an end of the first elastic arm 331a away from the third elastic arm 333a.
  • the arrangement of the bending portion 34a increases the deformation arm of the elastic member 3a, effectively reduces the deformation stress, further improves the working amplitude of the linear vibration motor 100a, and increases the The amount of vibration of the linear vibration motor 100a.
  • the vibration performance of the linear vibration motor 100a is better.
  • the bent portion 34 a includes a first bend 341 a, and the first bend 341 a is formed to protrude toward the mass 21.
  • the bending number, shape and position of the bending portion 34a can be specifically set according to actual design requirements.
  • the sound emitting device 100b of Embodiment 3 is basically the same as the sound emitting device of Embodiment 1, and the same parts will not be repeated here.
  • Embodiment 3 Different from the structure of the elastic member of the first embodiment, the structure of the elastic member of the sound generating device 100b of the third embodiment will be explained below:
  • the elastic member 3b includes a first fixed arm 31b fixed to the housing 1, a second fixed arm 32b fixed to the mass 21, and a connection between the first fixed arm 31b and the second fixed arm 32b
  • the elastic arm 33b, the first fixed arm 31b and the second fixed arm 32b are respectively located on opposite sides of the mass 21.
  • the elastic arm 33b includes at least one bent portion 34b formed by bending.
  • the number, shape, position, and structure of the bent portions 34b are not limited, and they can be specifically set according to actual design requirements.
  • the end connecting the elastic arm 33b and the second fixed arm 31b is bent to form the bent portion 34b, and the second fixed arm 31b is connected to the bent portion 34b through the bent portion 34b.
  • the elastic arm 33b is connected.
  • the elastic arm 33b includes a first elastic arm 331b and a second elastic arm 332b which are respectively arranged on opposite sides of the mass 21 and spaced apart from the housing 1, and connected to the first elastic arm 331b and the third elastic arm 333b of the second elastic arm 332b and spaced apart from the mass 21; the first fixed arm 31b is connected to the third elastic arm 333b through the first elastic arm 331b, The second fixed arm 32b is connected to the third elastic arm 333b through the second elastic arm 332b; the bent portion 34b is formed on the second elastic arm 332b. In this embodiment, the bent portion 34b is formed at an end of the second elastic arm 332b away from the third elastic arm 333b.
  • the arrangement of the bending portion 34b increases the deformation arm of the elastic member 3b, effectively reduces the deformation stress, further improves the working amplitude of the linear vibration motor 100b, and increases the The amount of vibration of the linear vibration motor 100b.
  • the vibration performance of the linear vibration motor 100b is better.
  • the bent portion 34b is formed to protrude toward the mass 21.
  • a side of the mass block 21 close to the second elastic arm 332 b is recessed to form a relief groove 213 inside the mass block 21, and the bent portion 34 b is arranged directly opposite to the relief groove 213.
  • the number, shape, and position of the bending portion 34b can be specifically set according to actual design requirements.
  • the sound emitting device 100c of Embodiment 4 is basically the same as the sound emitting device of Embodiment 1. The same parts are not repeated here. Compared with the sound emitting device of Embodiment 1, the implementation The structure of the elastic member of Example 4 is different from that of Example 1. The structure of the elastic member of the sound generating device 100b of Example 4 will be explained in detail below:
  • the elastic member 3c includes a first fixed arm 31c fixed to the housing 1, a second fixed arm 32c fixed to the mass 21, and a connection between the first fixed arm 31c and the second fixed arm 32c
  • the elastic arm 33c, the first fixed arm 31c and the second fixed arm 32c are respectively located on opposite sides of the mass block 21.
  • the elastic arm 33c includes at least one bent portion 34 formed by bending.
  • the number, shape, position, and structure of the bending portions 34c are not limited, and they can be specifically set according to actual design requirements.
  • the two ends of the elastic arm 33c connected to the first fixed arm 31c and the second fixed arm 32c are respectively bent to form at least one of the bent portions 34c, and the The first fixed arm 31c and the second fixed arm 32 are connected to the elastic arm 33c through the bent portion 34c.
  • the elastic arm 33c includes a first elastic arm 331c and a second elastic arm 332c which are respectively arranged on opposite sides of the mass 21 and spaced apart from the housing 1, and are connected to the first elastic arm 331c and the third elastic arm 333c of the second elastic arm 332c and spaced apart from the mass 21;
  • the first fixed arm 31c is connected to the third elastic arm 333c through the first elastic arm 331c
  • the second fixed arm 32c is connected to the third elastic arm 333c through the second elastic arm 332c; two bending parts 34c are formed on the first elastic arm 331c and the second elastic arm 332c .
  • the bent portion 34c is formed at one end of the first elastic arm 331c and the second elastic arm 332c away from the third elastic arm 333c.
  • the arrangement of the bent portion 34c increases the deformation arm of the elastic member 3c, effectively reduces the deformation stress, further improves the working amplitude of the linear vibration motor 100c, and increases the The amount of vibration of the linear vibration motor 100c.
  • the vibration performance of the linear vibration motor 100c is better.
  • the bent portion 34c connecting the first fixed arm 31c and the elastic arm 33c includes a first bend 341c, and the first bend 341c faces the mass 21
  • the bending part 34c connecting the second fixed arm 32c and the elastic arm 33c includes the first bend 341c and the second bend connected to the first bend 341c Bend 342c, the first bend 341c is formed to protrude toward the direction of the mass 21, and the second bend 342c is formed to protrude toward the direction away from the mass 21.
  • the bending number, shape and position of the bending portion 34c can be specifically set according to actual design requirements.
  • the side of the mass block 21 close to the second elastic arm 332c is recessed into the mass 21 to form a relief groove 213, and the bent portion 34c is aligned with the relief groove 213. Pair set.
  • the elastic member in the linear vibration motor of the present invention includes a first fixed arm fixed to the housing, a second fixed arm fixed to the mass, and a connection to the first fixed arm.
  • the elastic arm of the arm and the second fixed arm, the first fixed arm and the second fixed arm are respectively located on opposite sides of the mass; the elastic arm includes at least one bent portion formed by bending .
  • the configuration of this structure increases the deformation arm of the elastic member, effectively reduces the deformation stress, further improves the working amplitude of the linear vibration motor, and increases the vibration amount of the linear vibration motor. Therefore, the vibration performance of the linear vibration motor is better.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)

Abstract

本实用新型提供了一种线性振动电机，其包括具有收容空间的壳体、振动单元、将所述振动单元悬置于所述收容空间的弹性件以及固定于所述壳体并驱动所述振动单元振动的线圈组件，所述振动单元包括质量块；所述弹性件包括固定于所述壳体的第一固定臂、固定于所述质量块的第二固定臂以及连接所述第一固定臂和所述第二固定臂的弹臂，所述第一固定臂与所述第二固定臂分别位于所述质量块的相对两侧；所述弹臂包括至少一个弯折形成的折弯部。与相关技术相比，本实用新型的线性振动电机的振动量高且振动性能更优。

Description

线性振动电机 技术领域
本实用新型涉及一种振动电机，尤其涉及一种用于便携式消费性电子产品的线性振动电机。
 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，一般都会用到振动电机来做***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高，稳定性好且使用寿命长。
相关技术的线性振动电机，其包括具有收容空间的壳体、置于所述收容空间内的振动单元、将所述振动单元悬置于所述收容空间的弹性件以及固定于所述壳体并驱动所述振动单元振动的线圈组件。所述弹性件包括两个且分别位于所述振动单元沿其振动方向的相对两侧，每一所述弹性件包括弹臂、由所述弹臂的相对两端分别同向弯折延伸的第一连接臂和第二连接臂；所述第一连接臂固定于所述振动单元，所述第二连接臂固定于所述壳体。
 技术问题
然而，相关技术的线性振动电机中，所述弹性件的所述弹臂为C型结构，第一连接臂和第二连接臂均为固定于振动单元或壳体的平板状结构，使得所述弹臂变形时受到的应力较大，从而导致所述振动单元的工作振幅难以进一步提升，限制了线性振动电机的振动性能。
因此，实有必要提供一种新的线性振动电机解决上述技术问题
 技术解决方案
本实用新型的目的在于提供一种振动量高且振动性能更优的线性振动电机。
为了达到上述目的，本实用新型提供了一种线性振动电机，其包括具有收容空间的壳体、振动单元、将所述振动单元悬置于所述收容空间的弹性件以及固定于所述壳体并驱动所述振动单元振动的线圈组件，所述振动单元包括质量块；所述弹性件包括固定于所述壳体的第一固定臂、固定于所述质量块的第二固定臂以及连接所述第一固定臂和所述第二固定臂的弹臂，所述第一固定臂与所述第二固定臂分别位于所述质量块的相对两侧；所述弹臂包括至少一个弯折形成的折弯部。
优选的，所述弹臂与所述第一固定臂和所述第二固定臂连接的端部中的至少一个弯折形成所述折弯部，所述第一固定臂和/或所述第二固定臂通过所述折弯部与所述弹臂连接。
优选的，所述弹臂包括分别间隔设置于所述质量块相对两侧且与所述壳体间隔的第一弹臂和第二弹臂，以及连接所述第一弹臂和所述第二弹臂且与所述质量块间隔设置的第三弹臂；所述第一固定臂通过所述第一弹臂与所述第三弹臂连接，所述第二固定臂通过所述第二弹臂与所述第三弹臂连接；所述折弯部形成于所述第一弹臂和所述第二弹臂中的至少一个。
优选的，所述折弯部形成于所述第一弹臂和/或所述第二弹臂远离所述第三弹臂的一端。
优选的，所述折弯部包括第一折弯，所述第一折弯朝向所述质量块的方向凸出形成。
优选的，所述折弯部还包括与所述第一折弯连接的第二折弯，所述第二折弯朝向远离所述质量块的方向凸出形成。
优选的，所述质量块靠近所述第二弹臂的一侧向所述质量块内部凹陷形成让位槽，所述折弯部与所述让位槽正对设置。
优选的，所述弹性件还包括固定于所述第一固定臂远离所述壳体一侧的第一焊片，固定于所述第二固定臂远离所述质量块一侧的第二焊片。
优选的，所述第一固定臂与所述壳体以及所述第二固定臂和所述质量块均通过焊接固定。
优选的，所述弹性件包括两个且分别位于所述振动单元沿其振动方向的相对两侧，所述质量块包括垂直于所述振动单元振动方向且相对设置的第一壁和第二壁，其中一所述弹性件的所述第一固定臂固定于所述壳体靠近所述第一壁的一侧，该所述弹性件的所述第二固定臂固定于所述第二壁；另一所述弹性件的所述第一固定臂固定于所述壳体靠近所述第二壁的一侧，该所述弹性件的所述第二固定臂固定于所述第一壁。
 有益效果
与相关技术相比，本实用新型的线性振动电机中的所述弹性件包括固定于所述壳体的第一固定臂、固定于所述质量块的第二固定臂以及连接所述第一固定臂和所述第二固定臂的弹臂，所述第一固定臂与所述第二固定臂分别位于所述质量块的相对两侧；所述弹臂包括至少一个弯折形成的折弯部。该结构的设置增加了所述弹性件的变形力臂，有效的降低了变形应力，进一步的提升了所述线性振动电机的工作振幅，并提高了所述线性振动电机的振动量。从而使所述线性振动电机的振动性能更优。
 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为本实用新型线性振动电机的立体结构示意图；
图2为本实用新型实施例1的线性振动电机的立体结构分解示意图；
图3为本实用新型实施例1的线性振动电机去掉上壳体的立体结构示意图；
图4为本实用新型实施例1的弹性件的立体结构示意图；
图5为本实用新型实施例2的线性振动电机的立体结构分解示意图；
图6为本实用新型实施例3的线性振动电机的立体结构分解示意图；
图7为本实用新型实施例4的线性振动电机的立体结构分解示意图；
图8为本实用新型实施例4的线性振动电机去掉上壳体的立体结构示意图；
图9为本实用新型实施例4的弹性件的立体结构示意图。
 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。
实施例1
请参阅图1-4，本实用新型提供一种线性振动电机100，其包括具有收容空间的壳体1、振动单元2、将所述振动单元2悬置于所述收容空间的弹性件3、固定于所述壳体1并驱动所述振动单元2振动的线圈组件4以及上壳体5。
所述振动单元2包括质量块21以及嵌设于所述质量块21内的磁钢22，线圈组件4固定于所述壳体1的底壁，所述磁钢22包括4组，4组所述磁钢22环绕所述线圈组件4设置。
所述弹性件3包括固定于所述壳体1的第一固定臂31、固定于所述质量块21的第二固定臂32以及连接所述第一固定臂31和所述第二固定臂32的弹臂33，所述第一固定臂31与所述第二固定臂32分别位于所述质量块21的相对两侧。
值得一提的是，所述弹臂33包括至少一个弯折形成的折弯部34。所述折弯部34的数量、形状、位置以及结构形式是不限的，其可以根据实际设计的需要进行具体的设置。比如，在本实施方式中，所述弹臂33与所述第一固定臂31和所述第二固定臂32连接的两个端部分别弯折形成两个所述折弯部34，所述第一固定臂31和所述第二固定臂32通过所述折弯部34与所述弹臂33连接。
具体的，所述弹臂33包括分别间隔设置于所述质量块21相对两侧且与所述壳体1间隔的第一弹臂331和第二弹臂332，以及连接所述第一弹臂331和所述第二弹臂332且与所述质量块21间隔设置的第三弹臂333；所述第一固定臂31通过所述第一弹臂331与所述第三弹臂333连接，所述第二固定臂32通过所述第二弹臂332与所述第三弹臂333连接；两个所述折弯部34形成于所述第一弹臂331和所述第二弹臂332。在本实施方式中，所述折弯部34形成于所述第一弹臂331和所述第二弹臂332远离所述第三弹臂333的一端。
上述结构中，两个所述折弯部34的设置增加了所述弹性件3的变形力臂，有效的降低了变形应力，进一步的提升了所述线性振动电机100的工作振幅，并提高了所述线性振动电机100的振动量。从而使所述线性振动电机100的振动性能更优。
在本实施方式中，所述折弯部34包括第一折弯341，所述第一折弯341朝向所述质量块21的方向凸出形成。当然，不限于此，所述折弯部34的折弯数量、形状以及位置都可以根据实际设计的需要进行具体的设置。
进一步的，所述弹性件3包括两个且分别位于所述振动单元2沿其振动方向的相对两侧，所述质量块21包括垂直于所述振动单元2振动方向且相对设置的第一壁211和第二壁212，其中一所述弹性件3的所述第一固定臂31固定于所述壳体1靠近所述第一壁211的一侧，该所述弹性件3的所述第二固定臂32固定于所述第二壁212；另一所述弹性件3的所述第一固定臂31固定于所述壳体1靠近所述第二壁212的一侧，该所述弹性件3的所述第二固定臂32固定于所述第一壁211。
更优的，所述质量块21靠近所述第二弹臂332的一侧向所述质量块21内部凹陷形成让位槽213，所述折弯部34与所述让位槽213正对设置。
所述让位槽213的设置可较大程度的避开其与所述折弯部34的相互干涉，所述折弯部34可设计利用更充分的空间，提高振动性能。
所述弹性件3还包括固定于所述第一固定臂31远离所述壳体1一侧的第一焊片35，固定于所述第二固定臂32远离所述质量块21一侧的第二焊片36。该结构的设置，增加了所述线性振动电机100的整体强度，提高了所述线性振动电机100的稳定性，进一步的提升了所述线性振动电机100的振动性能。
在本实施方式中，所述第一固定臂31与所述壳体1以及所述第二固定臂32和所述质量块21均通过焊接固定，不限于此。
实施例2
请参阅图5所示，实施例2的发声器件100a与实施例1的发声器件基本相同，两者相同的部分在此不再一一赘述，与实施例1的发声器件相比，实施例2与实施例1的弹性件结构不同，下面对实施例2的发声器件100a的弹性件结构进行展开说明：
所述弹性件3a包括固定于所述壳体1的第一固定臂31a、固定于所述质量块21的第二固定臂32a以及连接所述第一固定臂31a和所述第二固定臂32a的弹臂33a，所述第一固定臂31a与所述第二固定臂32a分别位于所述质量块21的相对两侧。
值得一提的是，所述弹臂33a包括至少一个弯折形成的折弯部34a。所述折弯部34a的数量、形状、位置以及结构形式是不限的，其可以根据实际设计的需要进行具体的设置。比如，在本实施方式中，所述弹臂33a与所述第一固定臂31a连接的端部弯折形成所述折弯部34a，所述第一固定臂31a通过所述折弯部34a与所述弹臂33a连接。
具体的，所述弹臂33a包括分别间隔设置于所述质量块21相对两侧且与所述壳体1间隔的第一弹臂331a和第二弹臂332a，以及连接所述第一弹臂331a和所述第二弹臂332a且与所述质量块21间隔设置的第三弹臂333a；所述第一固定臂31a通过所述第一弹臂331a与所述第三弹臂333a连接，所述第二固定臂32a通过所述第二弹臂332a与所述第三弹臂333a连接；所述折弯部34形成于所述第一弹臂331a。在本实施方式中，所述折弯部34a形成于所述第一弹臂331a远离所述第三弹臂333a的一端。
上述结构中，所述折弯部34a的设置增加了所述弹性件3a的变形力臂，有效的降低了变形应力，进一步的提升了所述线性振动电机100a的工作振幅，并提高了所述线性振动电机100a的振动量。从而使所述线性振动电机100a的振动性能更优。
在本实施方式中，所述折弯部34a包括第一折弯341a，所述第一折弯341a朝向所述质量块21的方向凸出形成。当然，不限于此，所述折弯部34a的折弯数量、形状以及位置都可以根据实际设计的需要进行具体的设置。
实施例3
请参阅图6所示，实施例3的发声器件100b与实施例1的发声器件基本相同，两者相同的部分在此不再一一赘述，与实施例1的发声器件相比，实施例3与实施例1的弹性件结构不同，下面对实施例3的发声器件100b的弹性件结构进行展开说明：
所述弹性件3b包括固定于所述壳体1的第一固定臂31b、固定于所述质量块21的第二固定臂32b以及连接所述第一固定臂31b和所述第二固定臂32b的弹臂33b，所述第一固定臂31b与所述第二固定臂32b分别位于所述质量块21的相对两侧。
值得一提的是，所述弹臂33b包括至少一个弯折形成的折弯部34b。所述折弯部34b的数量、形状、位置以及结构形式是不限的，其可以根据实际设计的需要进行具体的设置。比如，在本实施方式中，所述弹臂33b与所述第二固定臂31b连接的端部弯折形成所述折弯部34b，所述第二固定臂31b通过所述折弯部34b与所述弹臂33b连接。
具体的，所述弹臂33b包括分别间隔设置于所述质量块21相对两侧且与所述壳体1间隔的第一弹臂331b和第二弹臂332b，以及连接所述第一弹臂331b和所述第二弹臂332b且与所述质量块21间隔设置的第三弹臂333b；所述第一固定臂31b通过所述第一弹臂331b与所述第三弹臂333b连接，所述第二固定臂32b通过所述第二弹臂332b与所述第三弹臂333b连接；所述折弯部34b形成于所述第二弹臂332b。在本实施方式中，所述折弯部34b形成于所述第二弹臂332b远离所述第三弹臂333b的一端。上述结构中，所述折弯部34b的设置增加了所述弹性件3b的变形力臂，有效的降低了变形应力，进一步的提升了所述线性振动电机100b的工作振幅，并提高了所述线性振动电机100b的振动量。从而使所述线性振动电机100b的振动性能更优。
在本实施方式中，所述折弯部34b朝向所述质量块21的方向凸出形成。所述质量块21靠近所述第二弹臂332b的一侧向所述质量块21内部凹陷形成让位槽213，所述折弯部34b与所述让位槽213正对设置。当然，不限于此，所述折弯部34b的折弯数量、形状以及位置都可以根据实际设计的需要进行具体的设置。
实施例4
请参阅图7-9所示，实施例4的发声器件100c与实施例1的发声器件基本相同，两者相同的部分在此不再一一赘述，与实施例1的发声器件相比，实施例4与实施例1的弹性件结构不同，下面对实施例4的发声器件100b的弹性件结构进行展开说明：
所述弹性件3c包括固定于所述壳体1的第一固定臂31c、固定于所述质量块21的第二固定臂32c以及连接所述第一固定臂31c和所述第二固定臂32c的弹臂33c，所述第一固定臂31c与所述第二固定臂32c分别位于所述质量块21的相对两侧。
值得一提的是，所述弹臂33c包括至少一个弯折形成的折弯部34。所述折弯部34c的数量、形状、位置以及结构形式是不限的，其可以根据实际设计的需要进行具体的设置。比如，在本实施方式中，所述弹臂33c与所述第一固定臂31c和所述第二固定臂32c连接的两个端部分别弯折形成至少一个所述折弯部34c，所述第一固定臂31c和所述第二固定臂32通过所述折弯部34c与所述弹臂33c连接。
具体的，所述弹臂33c包括分别间隔设置于所述质量块21相对两侧且与所述壳体1间隔的第一弹臂331c和第二弹臂332c，以及连接所述第一弹臂331c和所述第二弹臂332c且与所述质量块21间隔设置的第三弹臂333c；所述第一固定臂31c通过所述第一弹臂331c与所述第三弹臂333c连接，所述第二固定臂32c通过所述第二弹臂332c与所述第三弹臂333c连接；两个所述折弯部34c形成于所述第一弹臂331c和所述第二弹臂332c。在本实施方式中，所述折弯部34c形成于所述第一弹臂331c和所述第二弹臂332c远离所述第三弹臂333c的一端。
上述结构中，所述折弯部34c的设置增加了所述弹性件3c的变形力臂，有效的降低了变形应力，进一步的提升了所述线性振动电机100c的工作振幅，并提高了所述线性振动电机100c的振动量。从而使所述线性振动电机100c的振动性能更优。
在本实施方式中，连接所述第一固定臂31c和所述弹臂33c的所述折弯部34c，其包括第一折弯341c，所述第一折弯341c朝向所述质量块21的方向凸出形成；连接所述第二固定臂32c和所述弹臂33c的所述折弯部34c，其包括所述第一折弯341c和与所述第一折弯341c连接的第二折弯342c，所述第一折弯341c朝向所述质量块21的方向凸出形成，所述第二折弯342c朝向远离所述质量块21的方向凸出形成。当然，不限于此，所述折弯部34c的折弯数量、形状以及位置都可以根据实际设计的需要进行具体的设置。在本实施方式中，所述质量块21靠近所述第二弹臂332c的一侧向所述质量块21内部凹陷形成让位槽213，所述折弯部34c与所述让位槽213正对设置。
与相关技术相比，本实用新型的线性振动电机中的所述弹性件包括固定于所述壳体的第一固定臂、固定于所述质量块的第二固定臂以及连接所述第一固定臂和所述第二固定臂的弹臂，所述第一固定臂与所述第二固定臂分别位于所述质量块的相对两侧；所述弹臂包括至少一个弯折形成的折弯部。该结构的设置增加了所述弹性件的变形力臂，有效的降低了变形应力，进一步的提升了所述线性振动电机的工作振幅，并提高了所述线性振动电机的振动量。从而使所述线性振动电机的振动性能更优。
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. 一种线性振动电机，其包括具有收容空间的壳体、振动单元、将所述振动单元悬置于所述收容空间的弹性件以及固定于所述壳体并驱动所述振动单元振动的线圈组件，所述振动单元包括质量块；其特征在于，所述弹性件包括固定于所述壳体的第一固定臂、固定于所述质量块的第二固定臂以及连接所述第一固定臂和所述第二固定臂的弹臂，所述第一固定臂与所述第二固定臂分别位于所述质量块的相对两侧；所述弹臂包括至少一个弯折形成的折弯部。
  2. 根据权利要求1所述的线性振动电机，其特征在于，所述弹臂与所述第一固定臂和所述第二固定臂连接的端部中的至少一个弯折形成所述折弯部，所述第一固定臂和/或所述第二固定臂通过所述折弯部与所述弹臂连接。
  3. 根据权利要求2所述的线性振动电机，其特征在于，所述弹臂包括分别间隔设置于所述质量块相对两侧且与所述壳体间隔的第一弹臂和第二弹臂，以及连接所述第一弹臂和所述第二弹臂且与所述质量块间隔设置的第三弹臂；所述第一固定臂通过所述第一弹臂与所述第三弹臂连接，所述第二固定臂通过所述第二弹臂与所述第三弹臂连接；所述折弯部形成于所述第一弹臂和所述第二弹臂中的至少一个。
  4. 根据权利要求3所述的线性振动电机，其特征在于，所述折弯部形成于所述第一弹臂和/或所述第二弹臂远离所述第三弹臂的一端。
  5. 根据权利要求4所述的线性振动电机，其特征在于，所述折弯部包括第一折弯，所述第一折弯朝向所述质量块的方向凸出形成。
  6. 根据权利要求5所述的线性振动电机，其特征在于，所述折弯部还包括与所述第一折弯连接的第二折弯，所述第二折弯朝向远离所述质量块的方向凸出形成。
  7. 根据权利要求5或6所述的线性振动电机，其特征在于，所述质量块靠近所述第二弹臂的一侧向所述质量块内部凹陷形成让位槽，所述折弯部与所述让位槽正对设置。
  8. 根据权利要求1所述的线性振动电机，其特征在于，所述弹性件还包括固定于所述第一固定臂远离所述壳体一侧的第一焊片，固定于所述第二固定臂远离所述质量块一侧的第二焊片。
  9. 根据权利要求1所述的线性振动电机，其特征在于，所述第一固定臂与所述壳体以及所述第二固定臂和所述质量块均通过焊接固定。
  10. 根据权利要求1所述的线性振动电机，其特征在于，所述弹性件包括两个且分别位于所述振动单元沿其振动方向的相对两侧，所述质量块包括垂直于所述振动单元振动方向且相对设置的第一壁和第二壁，其中一所述弹性件的所述第一固定臂固定于所述壳体靠近所述第一壁的一侧，该所述弹性件的所述第二固定臂固定于所述第二壁；另一所述弹性件的所述第一固定臂固定于所述壳体靠近所述第二壁的一侧，该所述弹性件的所述第二固定臂固定于所述第一壁。
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