WO2021000143A1 - 振动激励器 - Google Patents

振动激励器 Download PDF

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Publication number
WO2021000143A1
WO2021000143A1 PCT/CN2019/094043 CN2019094043W WO2021000143A1 WO 2021000143 A1 WO2021000143 A1 WO 2021000143A1 CN 2019094043 W CN2019094043 W CN 2019094043W WO 2021000143 A1 WO2021000143 A1 WO 2021000143A1
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WO
WIPO (PCT)
Prior art keywords
fixed
vibration
fixing
vibration exciter
deformed portion
Prior art date
Application number
PCT/CN2019/094043
Other languages
English (en)
French (fr)
Inventor
严绪东
刘威
周科勇
韩文亚
游泳
Original Assignee
瑞声声学科技(深圳)有限公司
瑞声科技(新加坡)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(新加坡)有限公司 filed Critical 瑞声声学科技(深圳)有限公司
Priority to PCT/CN2019/094043 priority Critical patent/WO2021000143A1/zh
Priority to CN201910591074.XA priority patent/CN110401744B/zh
Priority to US16/994,692 priority patent/US11804764B2/en
Publication of WO2021000143A1 publication Critical patent/WO2021000143A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/026—Details of the structure or mounting of specific components
    • 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
    • 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
    • H02K35/00—Generators with reciprocating, oscillating or vibrating coil system, magnet, armature or other part of the magnetic circuit
    • H02K35/02—Generators with reciprocating, oscillating or vibrating coil system, magnet, armature or other part of the magnetic circuit with moving magnets and stationary coil systems

Definitions

  • This application relates to the technical field of exciters, in particular to a vibration exciter.
  • the application provides a vibration exciter that can ensure vibration balance.
  • a vibration exciter includes a housing with a housing space, a vibration unit suspended in the housing, a coil that drives the vibration unit, and an elastic member that suspends the vibration unit in the housing, so
  • the vibration unit includes a mass fixedly connected to the elastic member, the mass includes a fixed plane disposed opposite to each other along the vibration direction, one end of the elastic member is fixed to the mass and the other end is fixed to the housing
  • the projection of the elastic member along the vibration direction is at least partially located in the fixed plane.
  • the elastic members include four, and each of the fixing planes is fixed with two elastic members.
  • the elastic member includes a first fixing portion fixedly connected to the fixing plane, a second fixing portion fixedly connected to the housing, and a deformation connecting the first fixing portion and the second fixing portion Portion
  • the fixing plane is rectangular
  • the fixing plane includes a first edge portion arranged relatively parallel and a second edge portion connected to the first edge portion and arranged relatively parallel
  • the first fixing portion is fixed to the The first edge portion
  • the deformed portion includes a first deformed portion extending from the first fixing portion along the first edge portion, and an end away from the first fixing portion from the first deformed portion along the A second deformed portion bent and extended from the second edge portion, and a third deformed portion extending along the other first edge portion from an end of the second deformed portion away from the first deformed portion, the third deformed portion
  • the part is connected with the second fixing part.
  • the elastic member includes an opening surrounded by the first deformed portion, the second deformed portion, and the third deformed portion, and the openings of the two elastic members located on the same fixed plane are arranged opposite to each other ,
  • the second deformed portions of the two elastic members are respectively disposed oppositely along different second edge portions, and the first fixing portions of the two elastic members are respectively fixed to the different first edges unit.
  • the projection of the first fixing portion of one elastic element in the vibration direction and the projection of the second fixing portion of the other elastic element on the same fixing plane in the vibration direction are both located at the same place.
  • the first edge portions are spaced apart from each other.
  • the mass includes a relief portion that is recessed from the fixed plane in a direction away from the deformed portion and corresponds to the deformed portion, and the relief portion includes a first deformed portion corresponding to the first deformed portion.
  • a recessed portion, a second recessed portion corresponding to the second deformed portion, and a third recessed portion corresponding to the third deformed portion, the recessed depth of the first recessed portion in the vibration direction is smaller than that of the third recessed portion The depth of the depression along the vibration direction.
  • the housing includes a cylindrical shell with a receiving space and a cover plate covering both ends of the shell, the cover plate and the fixed plane are relatively spaced apart, and the second fixing portion is fixedly connected ⁇ The cover.
  • the vibration exciter further includes a gasket provided between the cover plate and the second fixing part and fixing the second fixing part to the cover plate.
  • the vibration exciter further includes a flexible circuit board fixed to the cover plate, and the coil is electrically connected to the flexible circuit board and is fixed to the cover plate through the flexible circuit board.
  • the vibration exciter further includes a magnetic column fixed to the cover plate, the coil is coupled to the magnetic column, the mass includes a through hole penetrating in a vibration direction, and the vibration
  • the unit further includes a magnet accommodated in the through hole, the mass includes an inner wall surrounding the through hole, the inner wall includes a first inner wall that is oppositely disposed, and a first inner wall that is connected to the first inner wall and is oppositely disposed.
  • the magnet includes four magnets spaced apart from the coil, and each of the first inner wall and each of the second inner walls is fixed with one of the magnets.
  • the magnetic steel is magnetized along the vibration direction.
  • the vibration exciter further includes a magnetic permeable plate fixed to a side of the coil away from the flexible circuit board and arranged around the permeable column.
  • one end of the elastic member of the vibration exciter provided by the present application is fixed to the mass and the other end is fixed to the housing.
  • the projection of the elastic member along the vibration direction is at least partially located in the fixed plane of the mass, thereby achieving vibration balance.
  • the vibration balance of the vibration exciter is ensured, thereby improving the vibration stability of the vibration exciter.
  • Figure 1 is a schematic diagram of the three-dimensional structure of the vibration exciter provided by this application.
  • Fig. 2 is a schematic diagram of an exploded structure of the vibration exciter shown in Fig. 1;
  • Figure 3 is a sectional view taken along III-III shown in Figure 1;
  • Figure 4 is a schematic diagram of the three-dimensional structure of the mass block
  • Figure 5 is a schematic view of the three-dimensional structure of the elastic member
  • Fig. 6 is a schematic diagram of the connection structure between the elastic member and the mass block.
  • the present application provides a vibration exciter 100, which includes a housing 10 having a housing space, a vibration unit 20 suspended in the housing space, a coil 30 that drives the vibration unit 20, and is electrically connected to the coil 30
  • the flexible circuit board 40 the magnetic column 50 fixed to the housing 10, the magnetic plate 60 arranged around the magnetic column 50, the elastic member 70 that suspends the vibration unit 20 in the housing 10 And a gasket 80 for fixing the elastic member 70.
  • the housing 10 includes a cylindrical shell 11 having the accommodating space and a cover plate 13 covering both ends of the shell 11.
  • the vibration unit 20 includes a mass block 21 fixedly connected to the elastic member 70 and a magnet 23 housed in the mass block 21, and the magnet 23 and the coil 30 are spaced apart.
  • the mass 21 includes two fixed planes 211 arranged opposite to each other along the direction of vibration, a relief portion 213 recessed from the fixed plane 211, a through hole 215 penetrating in the direction of vibration, and an inner wall surrounding the through hole 215 217.
  • the magnet 23 is accommodated in the through hole 215, and the cover plate 13 and the fixed plane 211 are arranged oppositely and spaced apart.
  • the fixing plane 211 is rectangular, and the fixing plane 211 includes two first edge portions 2111 that are relatively parallel and two second edge portions 2113 that connect the two first edge portions 2111 and are relatively parallel. Specifically, the projections of the two fixed planes 211 along the vibration direction completely overlap, and the first edge 2111 of one fixed plane 211 and the second edge portion 2113 of the other fixed plane 211 completely overlap. That is, the first edge portion 2111 of one fixing plane 211 is disposed corresponding to the second edge portion 2113 of the other fixing plane 211, and the second edge portion 2113 of one fixing plane 211 and The first edge 2111 of the other fixing plane 211 is correspondingly arranged.
  • the inner wall 217 includes two opposite first inner walls 2171 and two second inner walls 2173 connected to the two first inner walls 2171 and oppositely arranged.
  • the magnet 23 includes four magnetic steels spaced apart from the coil 30, The magnetic steel is magnetized along the vibration direction, and each of the first inner wall 2171 and each of the second inner wall 2173 is fixed with one of the magnetic steel.
  • the flexible circuit board 40 is fixed to the cover plate 13, and the coil 30 is electrically connected to the flexible circuit board 40 and is fixed to the cover plate 13 through the flexible circuit board 40.
  • the magnetic column 50 is fixed to the cover plate 13, the coil 30 is coupled to the magnetic column 50, and the magnetic plate 60 is fixed to the side of the coil 30 away from the flexible circuit board 40 and It is arranged around the magnetic column 50.
  • One end of the elastic member 70 is fixed to the mass 21 and the other end is fixed to the housing 10.
  • the projection of the elastic member 70 along the vibration direction is at least partially located in the fixed plane 211.
  • the elastic member 70 includes a first fixing part 71 fixedly connected to the fixing plane 211, a second fixing part 73 fixedly connected to the housing 10, and connecting the first fixing part 71 and the second fixing part.
  • the deformed portion 75 of the portion 73 and the opening 77 surrounded by the deformed portion 75, the first fixing portion 71 is fixed to the first edge portion 2111.
  • the projection of the first fixing portion 71 of one elastic member 70 in the vibration direction and the projection of the second fixing portion 73 of the other elastic member 70 on the same fixing plane 211 in the vibration direction are both located The same first edge portions 2111 are separated from each other.
  • the deformed portion 75 includes a first deformed portion 751 extending from the first fixing portion 71 along the first edge portion 2111, and an end of the first deformed portion 751 away from the first fixing portion 71
  • the second deformed portion 753 bent and extended from the second edge portion 2113, and the other first edge portion along the same fixed plane 211 at an end away from the first deformed portion 751 from the second deformed portion 753
  • a third deformed portion 755 extending from 2111 is connected to the second fixed portion 73.
  • the opening 77 is surrounded and formed by the first deformed portion 751, the second deformed portion 753, and the third deformed portion 755, and is located on the same fixed plane 211 of the two elastic members 70.
  • the openings 77 are arranged oppositely, and the second deformed portions 753 of the two elastic members 70 located on the same fixing plane 211 are arranged opposite to each other along different second edge portions 2113, and are located on the same fixing plane 211.
  • the first fixing portions 71 of the two elastic members 70 are respectively fixed to different first edge portions 2111.
  • the relief portion 213 is recessed from the fixing plane 211 in a direction away from the deformed portion 75, and the relief portion 213 is disposed corresponding to the deformed portion 75. Specifically, there are four vacant portions 213, and the four vacant portions 213 are respectively provided corresponding to the deformable portions 75 of the four elastic members 70.
  • the relief portion 213 includes a first recessed portion 2131 corresponding to the first deformed portion 751, a second recessed portion 2133 corresponding to the second deformed portion 753, and a second recessed portion 2133 corresponding to the third deformed portion 755.
  • Three recessed portions 2135, the recessed depth of the first recessed portion 2131 along the vibration direction is smaller than the recessed depth of the third recessed portion 2135 along the vibration direction.
  • the gasket 80 is disposed between the cover plate 13 and the elastic member 70 to fix the elastic member 70 on the cover plate 13. Specifically, the gasket 80 is disposed between the cover plate 13 and the second fixing portion 73 and fixes the second fixing portion 73 to the cover plate 13. There are four spacers 80 corresponding to the elastic member 70.
  • first edge 2111 and the second edge 2113 of one fixing plane 211 and the second edge 2113 and the first edge of the other fixing plane 211 Section 2111 is correspondingly set.
  • the projections of the first fixing portions 71 of the four elastic members 70 in the vibration direction are respectively located on four different sides of the same rectangle. That is, the four elastic members 70 respectively support different position areas of the mass 21 to maintain the vibration balance of the mass 21.
  • the vibration exciter 100 provided in the present application can effectively ensure the vibration balance.
  • the maximum stress of the elastic member 70 is smaller than that of a single plane spring, and the difference between the second mode and the first mode is significantly increased.
  • it can also realize the functions of screen sound and tactile feedback, reducing the space occupied by the whole machine.
  • one end of the elastic member of the vibration exciter provided by the present application is fixed to the mass and the other end is fixed to the housing.
  • the projection of the elastic member along the vibration direction is at least partially located in the fixed plane of the mass, thereby achieving vibration balance.
  • the vibration balance of the vibration exciter is ensured, thereby improving the vibration stability of the vibration exciter.

Abstract

一种振动激励器（100），包括具有收容空间的壳体（10）、悬置于壳体（10）内的振动单元（20）、驱动振动单元（20）的线圈（30）及将振动单元（20）悬置于壳体（10）内的弹性件（70），振动单元（20）包括与弹性件（70）固定连接的质量块（21），质量块（21）包括沿振动方向相对设置的固定平面（211），弹性件（70）的一端固定于质量块（21）、另一端固定于壳体（10），弹性件（70）沿振动方向的投影至少部分位于固定平面（211）内。该振动激励器（100）可以提升振动稳定性。

Description

振动激励器 技术领域
本申请涉及激励器技术领域，尤其涉及一种振动激励器。
 背景技术
随着互联网时代的到来，越来越多的电子设备也逐步占据每个人的生活，包括方便携带的手机，手机的功能也越来越多样，其中手机的高品质发声功能也是人们选购手机时重点考虑的功能之一。目前，随着触屏手机的开发，越来越多的屏幕发声器也开始应用于智能手机，屏幕发声智能手机，使耳朵贴近屏幕任何一处即可听到高音质声音，这样既方便了接听又使通话效果更加清晰。而激励器作为发声器件是实现屏幕发声的关键组成部分，屏幕发声技术的快速应用，使得高性能的激励器也变的尤为重要。
 技术问题
然而相关技术中为了实现屏幕发声和屏幕振动分别需要单独的器件实现，占用了整机的体积，并且相关技术中实现屏幕发声的激励器的振动平衡性不佳。
因此，有必要提供一种改进的振动激励器来解决上述问题。
 技术解决方案
针对相关技术中激励器的振动平衡性不佳的技术问题。本申请提供了一种能保证振动平衡性的振动激励器。
一种振动激励器，包括具有收容空间的壳体、悬置于所述壳体内的振动单元、驱动所述振动单元的线圈及将所述振动单元悬置于所述壳体内的弹性件，所述振动单元包括与所述弹性件固定连接的质量块，所述质量块包括沿振动方向相对设置的固定平面，所述弹性件的一端固定于所述质量块、另一端固定于所述壳体，弹性件沿振动方向的投影至少部分位于所述固定平面内。
优选的，所述弹性件包括四个，每一所述固定平面均固定有两个所述弹性件。
优选的，所述弹性件包括与所述固定平面固定连接的第一固定部、与所述壳体固定连接的第二固定部以及连接所述第一固定部与所述第二固定部的形变部，所述固定平面呈矩形，所述固定平面包括相对平行设置的第一边缘部以及连接所述第一边缘部且相对平行设置的第二边缘部，所述第一固定部固定于所述第一边缘部，所述形变部包括自所述第一固定部沿所述第一边缘部延伸的第一形变部、自所述第一形变部远离所述第一固定部的一端沿所述第二边缘部弯折延伸的第二形变部以及自所述第二形变部远离所述第一形变部的一端沿另一所述第一边缘部延伸的第三形变部，所述第三形变部与所述第二固定部连接。
优选的，所述弹性件包括由所述第一形变部、第二形变部以及第三形变部围设成的开口，位于同一所述固定平面的两个所述弹性件的所述开口相对设置，两个所述弹性件的所述第二形变部分别沿不同的所述第二边缘部相对设置，两个所述弹性件的所述第一固定部分别固定于不同的所述第一边缘部。
优选的，一个所述弹性件的所述第一固定部沿振动方向的投影与位于同一所述固定平面的另一所述弹性件的所述第二固定部沿振动方向的投影均位于同一所述第一边缘部且相互间隔。
优选的，所述质量块包括自所述固定平面向远离所述形变部方向凹陷且与所述形变部相对应的让位部，所述让位部包括与所述第一形变部对应的第一凹陷部、与所述第二形变部对应的第二凹陷部以及与所述第三形变部对应的第三凹陷部，所述第一凹陷部沿振动方向的凹陷深度小于所述第三凹陷部沿振动方向的凹陷深度。
优选的，所述壳体包括具有收容空间且呈筒状的外壳以及盖设于所述外壳两端的盖板，所述盖板与所述固定平面相对间隔设置，所述第二固定部固定连接于所述盖板。
优选的，所述振动激励器还包括设于所述盖板与所述第二固定部之间并将所述第二固定部固定于所述盖板上的垫片。
优选的，所述振动激励器还包括固定于所述盖板的柔性电路板，所述线圈与所述柔性电路板电连接并通过所述柔性电路板固定于所述盖板。
优选的，所述振动激励器还包括固定于所述盖板的导磁柱，所述线圈耦接于所述导磁柱上，所述质量块包括沿振动方向贯穿的通孔，所述振动单元还包括收容于所述通孔内的磁体，所述质量块包括围设成所述通孔的内壁，所述内壁包括相对设置的第一内壁以及连接所述第一内壁且相对设置的第二内壁，所述磁体包括与所述线圈间隔设置的四个磁钢，每一所述第一内壁以及每一所述第二内壁均固定有一个所述磁钢。
优选的，所述磁钢沿振动方向充磁。
优选的，所述振动激励器还包括固定于所述线圈远离所述柔性电路板一侧且围绕所述导磁柱设置的导磁板。
 有益效果
与相关技术相比，本申请提供的振动激励器的弹性件一端固定于质量块另一端固定于壳体，弹性件沿振动方向的投影至少部分位于质量块的固定平面内，从而实现振动平衡，保证了振动激励器的振动平衡性，从而提升了振动激励器的振动稳定性。
 附图说明
在此处键入附图说明描述段落。
 本发明的最佳实施方式
为了更清楚地说明本申请实施例中的技术方案，下面将对实施例描述中所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申请的一些实施例，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为本申请提供的振动激励器的立体结构示意图；
图2为图1所示振动激励器的分解结构示意图；
图3为沿图1所示III-III的剖视图；
图4为质量块的立体结构示意图；
图5为弹性件的立体结构示意图；
图6为弹性件与质量块的连接结构示意图。
 本发明的实施方式
下面将对本申请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申请的一部分实施例，而不是全部的实施例。基于本申请中的实施例，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，都属于本申请保护的范围。
请结合参阅图1至图6。本申请提供了一种振动激励器100，其包括具有收容空间的壳体10、悬置于所述收容空间的振动单元20、驱动所述振动单元20的线圈30、与所述线圈30电连接的柔性电路板40、固定于所述壳体10的导磁柱50、围绕导磁柱50设置的导磁板60、将所述振动单元20悬置于所述壳体10内的弹性件70及用以固定所述弹性件70的垫片80。
所述壳体10包括具有所述收容空间且呈筒状的外壳11及盖设于所述外壳11两端的盖板13。
所述振动单元20包括与所述弹性件70固定连接的质量块21及收容于所述质量块21内的磁体23，所述磁体23与所述线圈30间隔设置。
所述质量块21包括沿振动方向相对设置的两固定平面211、自所述固定平面211凹陷形成的让位部213、沿振动方向贯穿的通孔215及围设成所述通孔215的内壁217，所述磁体23收容于所述通孔215内，所述盖板13与所述固定平面211相对间隔设置。
所述固定平面211呈矩形，所述固定平面211包括相对平行设置的两第一边缘部2111以及连接两所述第一边缘部2111且相对平行设置的两第二边缘部2113。具体的，两所述固定平面211沿振动方向的投影完全重合，且一个所述固定平面211的所述第一边缘2111与另一个所述固定平面211的所述第二边缘部2113完全重合。即一个所述固定平面211的所述第一边缘部2111与另一个所述固定平面211的所述第二边缘部2113相对应设置，一个所述固定平面211的所述第二边缘部2113与另一个所述固定平面211的所述第一边缘部2111相对应设置。
所述内壁217包括相对设置的两第一内壁2171以及连接两所述第一内壁2171且相对设置的两第二内壁2173，所述磁体23包括与所述线圈30间隔设置的四个磁钢，所述磁钢沿振动方向充磁，每一所述第一内壁2171以及每一所述第二内壁2173均固定有一个所述磁钢。
所述柔性电路板40固定于所述盖板13，所述线圈30与所述柔性电路板40电连接并通过所述柔性电路板40固定于所述盖板13。
所述导磁柱50固定于所述盖板13，所述线圈30耦合于所述导磁柱50上，所述导磁板60固定于所述线圈30远离所述柔性电路板40一侧且围绕所述导磁柱50设置。
所述弹性件70一端固定于所述质量块21、另一端固定于所述壳体10，所述弹性件70沿振动方向的投影至少部分位于所述固定平面211内。
具体的，所述弹性件70设有四个，每一所述固定平面211均固定有两个所述弹性件70。所述弹性件70包括与所述固定平面211固定连接的第一固定部71、与所述壳体10固定连接的第二固定部73、连接所述第一固定部71与所述第二固定部73的形变部75及由所述形变部75围成的开口77，所述第一固定部71固定于所述第一边缘部2111。一个所述弹性件70的所述第一固定部71沿振动方向的投影与位于同一所述固定平面211的另一所述弹性件70的所述第二固定部73沿振动方向的投影均位于同一所述第一边缘部2111且相互间隔。
所述形变部75包括自所述第一固定部71沿所述第一边缘部2111延伸的第一形变部751、自所述第一形变部751远离所述第一固定部71的一端沿所述第二边缘部2113弯折延伸的第二形变部753以及自所述第二形变部753远离所述第一形变部751的一端沿同一所述固定平面211的另一所述第一边缘部2111延伸的第三形变部755，所述第三形变部755与所述第二固定部73连接。
所述开口77由所述第一形变部751、所述第二形变部753及所述第三形变部755共同围设形成，位于同一所述固定平面211的两个所述弹性件70的所述开口77相对设置，位于同一所述固定平面211的两个所述弹性件70的所述第二形变部753分别沿不同的所述第二边缘部2113相对设置，位于同一所述固定平面211的两个所述弹性件70的所述第一固定部71分别固定于不同的所述第一边缘部2111。
所述让位部213自所述固定平面211向远离所述形变部75方向凹陷形成，所述让位部213相对应所述形变部75设置。具体的，所述让位部213设有四个，四个所述让位部213分别对应四个所述弹性件70的所述形变部75设置。所述让位部213包括与所述第一形变部751对应的第一凹陷部2131、与所述第二形变部753对应的第二凹陷部2133以及与所述第三形变部755对应的第三凹陷部2135，所述第一凹陷部2131沿振动方向的凹陷深度小于所述第三凹陷部2135沿振动方向的凹陷深度。
所述垫片80设于所述盖板13与所述弹性件70之间将所述弹性件70固定于所述盖板13上。具体的，所述垫片80设于所述盖板13与所述第二固定部73之间并将所述第二固定部73固定于所述盖板13上。所述垫片80对应所述弹性件70设有四个。
可以理解的是，由于一个所述固定平面211的所述第一边缘部2111和所述第二边缘部2113与另一个所述固定平面211的所述第二边缘部2113和所述第一边缘部2111对应设置。使得四个所述弹性件70的所述第一固定部71沿振动方向上的投影分别位于同一个矩形的四条不同边上。即四个所述弹性件70分别支撑所述质量块21不同位置区域，保持所述质量块21振动平衡性。
本申请提供的振动激励器100可以有效保证振动平衡性。并且在同样的行程下，所述弹性件70最大应力小于单个平面弹簧，第二阶模态和第一阶模态的差值明显增大。同时也能实现屏幕发声和触觉反馈的功能，降低了占用整机的空间。
与相关技术相比，本申请提供的振动激励器的弹性件一端固定于质量块另一端固定于壳体，弹性件沿振动方向的投影至少部分位于质量块的固定平面内，从而实现振动平衡，保证了振动激励器的振动平衡性，从而提升了振动激励器的振动稳定性。
以上所述的仅是本申请的实施方式，在此应当指出，对于本领域的普通技术人员来说，在不脱离本申请创造构思的前提下，还可以做出改进，但这些均属于本申请的保护范围。
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在此处键入工业实用性描述段落。
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Claims (10)

  1. 一种振动激励器，包括具有收容空间的壳体、悬置于所述壳体内的振动单元、驱动所述振动单元的线圈及将所述振动单元悬置于所述壳体内的弹性件，其特征在于，所述振动单元包括与所述弹性件固定连接的质量块，所述质量块包括沿振动方向相对设置的固定平面，所述弹性件的一端固定于所述质量块、另一端固定于所述壳体，弹性件沿振动方向的投影至少部分位于所述固定平面内。
  2. 根据权利要求1所述的振动激励器，其特征在于，所述弹性件包括四个，每一所述固定平面均固定有两个所述弹性件。
  3. 根据权利要求2所述的振动激励器，其特征在于，所述弹性件包括与所述固定平面固定连接的第一固定部、与所述壳体固定连接的第二固定部以及连接所述第一固定部与所述第二固定部的形变部，所述固定平面呈矩形，所述固定平面包括相对平行设置的第一边缘部以及连接所述第一边缘部且相对平行设置的第二边缘部，所述第一固定部固定于所述第一边缘部，所述形变部包括自所述第一固定部沿所述第一边缘部延伸的第一形变部、自所述第一形变部远离所述第一固定部的一端沿所述第二边缘部弯折延伸的第二形变部以及自所述第二形变部远离所述第一形变部的一端沿另一所述第一边缘部延伸的第三形变部，所述第三形变部与所述第二固定部连接。
  4. 根据权利要求3所述的振动激励器，其特征在于，所述弹性件包括由所述第一形变部、第二形变部以及第三形变部围设成的开口，位于同一所述固定平面的两个所述弹性件的所述开口相对设置，两个所述弹性件的所述第二形变部分别沿不同的所述第二边缘部相对设置，两个所述弹性件的所述第一固定部分别固定于不同的所述第一边缘部。
  5. 根据权利要求4所述的振动激励器，其特征在于，一个所述弹性件的所述第一固定部沿振动方向的投影与位于同一所述固定平面的另一所述弹性件的所述第二固定部沿振动方向的投影均位于同一所述第一边缘部且相互间隔。
  6. 根据权利要求3所述的振动激励器，其特征在于，所述质量块包括自所述固定平面向远离所述形变部方向凹陷且与所述形变部相对应的让位部，所述让位部包括与所述第一形变部对应的第一凹陷部、与所述第二形变部对应的第二凹陷部以及与所述第三形变部对应的第三凹陷部，所述第一凹陷部沿振动方向的凹陷深度小于所述第三凹陷部沿振动方向的凹陷深度。
  7. 根据权利要求3所述的振动激励器，其特征在于，所述壳体包括具有收容空间且呈筒状的外壳以及盖设于所述外壳两端的盖板，所述盖板与所述固定平面相对间隔设置，所述第二固定部固定连接于所述盖板。
  8. 根据权利要求7所述的振动激励器，其特征在于，所述振动激励器还包括设于所述盖板与所述第二固定部之间并将所述第二固定部固定于所述盖板上的垫片。
  9. 根据权利要求7所述的振动激励器，其特征在于，所述振动激励器还包括固定于所述盖板的柔性电路板，所述线圈与所述柔性电路板电连接并通过所述柔性电路板固定于所述盖板。
  10. 根据权利要求9所述的振动激励器，其特征在于，所述振动激励器还包括固定于所述盖板的导磁柱，所述线圈耦接于所述导磁柱上，所述质量块包括沿振动方向贯穿的通孔，所述振动单元还包括收容于所述通孔内的磁体，所述质量块包括围设成所述通孔的内壁，所述内壁包括相对设置的第一内壁以及连接所述第一内壁且相对设置的第二内壁，所述磁体包括与所述线圈间隔设置的四个磁钢，每一所述第一内壁以及每一所述第二内壁均固定有一个所述磁钢。
    【权利要求11】根据权利要求10所述的振动激励器，其特征在于，所述磁钢沿振动方向充磁。
    【权利要求12】根据权利要求10所述的振动激励器，其特征在于，所述振动激励器还包括固定于所述线圈远离所述柔性电路板一侧且围绕所述导磁柱设置的导磁板。
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