WO2023001079A1 - 振动马达 - Google Patents

振动马达 Download PDF

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Publication number
WO2023001079A1
WO2023001079A1 PCT/CN2022/106051 CN2022106051W WO2023001079A1 WO 2023001079 A1 WO2023001079 A1 WO 2023001079A1 CN 2022106051 W CN2022106051 W CN 2022106051W WO 2023001079 A1 WO2023001079 A1 WO 2023001079A1
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WO
WIPO (PCT)
Prior art keywords
vibrator
vibration motor
vibrating
counterweight
stator
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PCT/CN2022/106051
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English (en)
French (fr)
Inventor
张雨晴
高志明
高文花
王晓萌
高全祥
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歌尔股份有限公司
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Application filed by 歌尔股份有限公司 filed Critical 歌尔股份有限公司
Publication of WO2023001079A1 publication Critical patent/WO2023001079A1/zh

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    • 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
    • H02K33/12—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with armatures moving in alternate directions by alternate energisation of two coil systems

Definitions

  • the invention relates to the technical field of electronic devices, in particular to a vibration motor.
  • Vibration motors are usually configured inside these electronic devices, and the vibration motors are used for system vibration conduction.
  • conventional vibration motors usually only vibrate in one direction, which makes the vibration direction relatively single, making the use experience of the traditional vibration motor poor.
  • the main purpose of the present invention is to provide a vibration motor, aiming at enabling the vibration motor to realize two-way vibration, so as to improve the use experience of the vibration motor.
  • the present invention proposes a vibration motor, which includes a housing, an external vibrator, a first stator, and a second stator; wherein, the housing has a first direction and a second direction that intersect;
  • the outer vibrator is installed vibrately in the housing along the first direction, the outer vibrator includes a vibrating shell, an inner vibrator and an outer vibrating magnetic group; the inner vibrator is vibrated along the second direction
  • the inner vibrator includes a counterweight and an inner vibrating magnetic group fixed at one end of the counterweight; the outer vibrating magnetic group is fixed at the other end of the counterweight;
  • the second A stator is arranged in the casing and corresponds to the outer vibrating magnetic group; the second stator is arranged in the casing and corresponds to the inner vibrating magnetic group.
  • the vibration motor further includes at least two outer elastic members, the at least two outer elastic members are respectively arranged on opposite sides of the outer vibrator in the first direction, and each of the outer elastic members components are connected to the vibrating shell of the external vibrator and the casing, so as to suspend the external vibrator in the casing.
  • the at least two outer elastic members are outer elastic pieces; one of the outer elastic pieces is connected to one end of the outer vibrator, and the other end of the outer elastic piece is tilted away from the outer vibrator to connect with the housing connected; the other outer elastic piece is connected to the other end of the outer vibrator, and the other end is tilted away from the outer vibrator to be connected to the housing.
  • the length of the outer elastic piece is greater than that of the outer vibrator, so that an end of the outer elastic piece connected to the housing can extend to one side of the first stator or the second stator.
  • the outer vibrator further includes at least two inner elastic members, the at least two inner elastic members are respectively arranged on opposite sides of the weight block in the second direction, each of the inner elastic members The elastic parts are connected to the vibrating shell and the counterweight to suspend the counterweight in the vibrating shell.
  • the at least two inner elastic pieces are inner elastic pieces; one of the inner elastic pieces is connected to one end of the counterweight, and the other end of the inner elastic is tilted away from the counterweight to be connected to the counterweight.
  • the vibrating shell is connected; the other inner elastic piece is connected with the other end of the counterweight, and the other end is tilted away from the counterweight to be connected with the vibrating shell.
  • the counterweight is arranged in a cuboid shape, the width direction of the counterweight is the same as the first direction, and the height direction of the counterweight is the same as the second direction.
  • the first stator includes a first iron core and a first coil that surrounds the first iron core; and/or, the second stator includes a second iron core and a first coil that surrounds the first iron core. The second coil around the second iron core.
  • the housing includes a main shell and two shell cover plates; wherein, the main shell penetrates along the second direction to form two openings; the two shell cover plates are respectively used for Cover the two openings of the main shell.
  • the inner vibrating magnetic group includes at least two magnets, and the magnets of the inner vibrating magnetic group are arranged along the second direction; and/or, the outer vibrating magnetic group includes at least two magnets , the magnets of the outer vibrating magnetic group are arranged along the first direction.
  • an external vibrator, a first stator, and a second stator are arranged in the housing of the vibration motor; wherein, the external vibrator is vibrated in the housing along the first direction, and the external vibrator includes a vibrating shell, The inner vibrator and the outer vibrating magnetic group; the inner vibrator is vibratingly arranged in the vibrating shell along the second direction, the inner vibrator includes a counterweight, and the inner vibrating magnetic group fixed at one end of the counterweight; the outer vibrating magnetic group is fixed on The other end of the counterweight; the first stator is arranged in the casing, and corresponds to the outer vibrating magnetic group of the outer vibrator, so as to cooperate with the outer vibrator to drive the vibration motor to vibrate in the first direction; the second stator is arranged in the casing inside the body, and corresponds to the inner vibration magnetic group of the inner vibrator, so as to cooperate with the inner vibrator to drive the vibration motor to vibrate in the second direction (see the introduction later for details), so that the
  • Fig. 1 is respectively schematic diagram of the structure of vibration motor of the present invention
  • Fig. 2 is a schematic diagram of the structural layout of the vibration motor in Fig. 1 along the first direction;
  • FIG. 3 is a schematic diagram of the structural layout of the vibration motor in FIG. 1 along a second direction;
  • Fig. 4 is a structural schematic diagram of the vibrating motor in Fig. 2 after the casing is removed;
  • FIG. 5 is a structural schematic diagram of the vibration motor in FIG. 4 after removing the outer elastic member and the vibrating housing.
  • the vibration motor includes a housing 110 , an external vibrator 200 , a first stator 410 and a second stator 420 .
  • the housing 110 has a first direction and a second direction intersecting;
  • the outer vibrator 200 is installed in the housing 110 vibrately along the first direction, and the outer vibrator 200 includes a vibrating shell 210, an inner vibrator 220 and an outer vibrating magnet Group 230;
  • the inner vibrator 220 is vibrately arranged in the vibrating shell 210 along the second direction, the inner vibrator 220 includes a counterweight 221 and an inner vibrating magnetic group 222 fixed at one end of the counterweight 221; an outer vibrating magnetic group 230 It is fixed at the other end of the counterweight 221;
  • the first stator 410 is arranged in the casing 110, and corresponds to the outer vibrating magnetic group 230;
  • the second stator 420 is arranged in the casing 110, and is connected to the inner
  • the external vibrator 200 as a whole is installed in the housing 110 so as to vibrate along the first direction.
  • the outer vibrator 200 and the first stator 410 constitute a first driving assembly that drives the vibration motor to vibrate along the first direction.
  • the inner vibrator 220 as a whole is installed in the vibrating shell 210 of the outer vibrator 200 so as to vibrate along the second direction.
  • the inner vibrator 220 and the second stator 420 constitute a second driving assembly that drives the vibration motor to vibrate along the second direction.
  • the first drive assembly and the second drive assembly are adapted to operate at different frequencies. For example, assume that the operating frequency of the first driving assembly is P 1 , the operating frequency of the second driving assembly is P 2 , and P 2 is different from P 1 .
  • the first drive assembly works, and the first stator 410 and the external vibrating magnetic group 230 of the external vibrator 200 are induced to generate vibration along the first direction. (as shown in the front and rear direction in Figure 2 ); the external vibrator 200 vibrates along the first direction under the action of the ampere force, and the vibration of the external vibrator 200 is transmitted to the housing 110 of the vibration motor, so that The vibration motor vibrates in a first direction.
  • the second drive assembly works, and the second stator 420 and the inner vibrating magnetic group 222 of the inner vibrator 220 are induced to produce vibrations along the second direction ( As shown in the up and down direction in FIG. 3 ), the inner vibrator 220 vibrates in the second direction under the action of the Ampere force, and the vibration of the inner vibrator 220 is first transmitted to the vibrating shell 210, so that the vibrating shell 210 also Vibration in the same direction occurs, and then the vibration of the vibration housing 210 is transmitted to the housing 110 of the vibration motor, so that the vibration motor as a whole can vibrate in the second direction.
  • the corresponding driving component works to make the vibration motor vibrate in the corresponding direction.
  • the outer vibrator 200 includes the inner vibrator 220, that is to say, the outer vibrator 200 and the inner vibrator 220 use a counterweight 221 together, so that the vibration motor can move in the first direction and the second direction. Vibration occurs in these two different directions. In this way, the vibration space of the vibration motor can be fully utilized to realize two-way vibration, and then the driving force obtained by the vibration motor can be large, and the stability is higher, and the magnetic flux leakage rate of the product is lower. .
  • the vibration motor as a whole can be configured as a cube structure or a cuboid structure; or, the vibration motor as a whole can also be configured as a cube-like structure or a cuboid-like structure.
  • the cuboid-like structure refers to the characteristics of length, width and height with a basic cuboid structure, but one or several of the planes are not planes, but curved or folded surfaces; or, the angle between the surfaces may not be 90° °.
  • the vibration motor is configured as a cuboid structure as a whole.
  • the vibration motor has a width direction, a length direction and a height direction.
  • the left-right direction represents the length direction of the vibration motor
  • the up-down direction represents the height direction of the vibration motor
  • the front-rear direction represents the width direction of the vibration motor.
  • the aforementioned second direction and the first direction may be any two directions among the up-down direction, the left-right direction and the front-rear direction.
  • the first direction is mainly referred to as the front-rear direction
  • the second direction is referred to as the up-down direction for description.
  • the outer vibrator 200, the first stator 410, and the second stator 420 are arranged in the housing 110 of the vibration motor; wherein, the outer vibrator 200 is installed on the housing 110 in a vibratory manner along the first direction.
  • the inner and outer vibrators 200 include a vibrating shell 210, an inner vibrator 220 and an outer vibrating magnetic group 230; the inner vibrator 220 is vibrateably arranged in the vibrating shell 210 along the second direction, and the inner vibrator 220 includes a counterweight 221, fixed on The inner vibrating magnetic group 222 at one end of the counterweight 221; the outer vibrating magnetic group 230 is fixed at the other end of the counterweight 221; Correspondingly, to cooperate with the external vibrator 200 to drive the vibration motor to vibrate in the first direction; Cooperate with driving the vibration motor to vibrate in the second direction (see the introduction above for details), so that the vibration motor can vibrate in two directions at two frequencies, effectively improving the use experience of the vibration motor.
  • the vibration motor further includes at least two outer elastic members 310 , and the at least two outer elastic members 310 are respectively arranged on the outer vibrator 200 at the second
  • each outer elastic member 310 is connected to the vibrating case 210 of the outer vibrator 200 and the housing 110 to suspend the outer vibrator 200 in the housing 110 .
  • the outer elastic member 310 is elastically deformed under the force between the outer vibrator 200 and the housing 110, thereby providing the outer vibrator 200 with a linear guide and returning to the equilibrium position.
  • the elastic force makes the external vibrator 200 vibrate continuously.
  • the outer elastic member 310 should be an elastic structure capable of recoverable elastic deformation.
  • the outer elastic member 310 may be, but not limited to, a shrapnel, a spring and other structures.
  • the at least two outer elastic members 310 are outer elastic pieces 310; one of the outer elastic pieces 310 is connected to one end of the outer vibrator 200, and the other end of the outer elastic piece 310 is tilted away from the direction of the outer vibrator 200.
  • the other outer elastic piece 310 is connected to the other end of the external vibrator 200 , and the other end is tilted away from the external vibrator 200 to be connected to the housing 110 .
  • the vibrating shell 210 has two first sidewalls opposite along the first direction, and the two first sidewalls are separated from the inner wall surface of the housing 110 to form the first gap.
  • the two outer elastic pieces 310 are respectively disposed in the two first gaps.
  • one of the outer elastic pieces 310 is connected to the left end of one of the first side walls of the vibrating shell 210, and the other end of the outer elastic piece 310 is lifted to be connected to the housing 110;
  • the right end of a first side wall is connected, and the other end of the outer elastic piece 310 is upturned to connect with the casing 110 .
  • the outer elastic piece 310 can stably support the outer vibrator 200 , so that the outer vibrator 200 can vibrate stably and return to the equilibrium position.
  • the outer elastic piece 310 because the rigidity of the outer elastic piece 310 in the first direction is relatively large, during the vibration process of the inner vibrator 220, the outer elastic piece 310 only plays the role of transmitting vibration to the housing 110 of the vibration motor, and basically does not Elastic deformation occurs.
  • the length of the outer elastic piece 310 may be the same as that of the outer vibrator 200 , or may be slightly longer than that of the outer vibrator 200 .
  • the length of the outer elastic piece 310 is set to be greater than that of the outer vibrator 200 , so that the end of the outer elastic piece 310 connected to the housing 110 can extend to one side of the first stator 410 or the second stator 420 .
  • the end of the outer elastic piece 310 located on the front side of the outer vibrator 200 connected to the housing 110 is between the second stator 420 and the inner wall of the housing 110; and the outer elastic piece 310 located on the rear side of the outer vibrator 200, One end connected to the housing 110 is located between the second stator 420 and the inner wall of the housing 110 .
  • Such a design can not only increase the stability of the external vibrator; but also prevent the first stator 410 and the second stator 420 from colliding with the housing 110 during the vibration of the vibration motor, protecting the first stator 410 and the second stator 420 The stator 410 and the second stator 420 are not damaged by the impact.
  • the outer vibrator further includes at least two inner elastic members 320 , and the at least two inner elastic members 320 are respectively arranged at the positions of the counterweight 221 .
  • each inner elastic member 320 is connected to the vibrating shell 210 and the counterweight 221 to suspend the counterweight 221 in the vibrating shell 210 .
  • the inner elastic member 320 elastically deforms under the force between the inner vibrator 220 and the vibrating housing 210 , thereby providing linear guidance and returning to the inner vibrator 220
  • the elastic force at the balance position makes the inner vibrator 220 vibrate continuously.
  • the inner elastic member 320 should be an elastic structure capable of recoverable elastic deformation.
  • the inner elastic member 320 may be, but not limited to, a shrapnel, a spring and other structures.
  • the at least two inner elastic members 320 are inner elastic pieces; one of the inner elastic pieces is connected to one end of the counterweight 221, and the other end of the inner elastic piece is tilted away from the counterweight 221.
  • the other inner elastic piece is connected to the other end of the counterweight 221 , and the other end is tilted away from the counterweight 221 to be connected to the vibrating shell 210 .
  • the vibrating shell 210 has two second side walls opposite to each other along the second direction, and a second gap is formed between the two second side walls and the counterweight 221 .
  • the two inner elastic pieces are respectively arranged in the two second gaps.
  • one of the inner elastic pieces is connected to the left end of the counterweight 221, and the other end of the inner elastic piece is raised to be connected to one of the second side walls of the vibrating shell 210; the other inner elastic piece is connected to the other end of the configuration block, The other end of the inner elastic piece is upturned and connected to the other second side wall of the vibrating shell 210 . In this way, it can be ensured that the inner elastic piece can stably support the inner vibrator 220, so that the inner vibrator 220 can vibrate stably and return to the equilibrium position.
  • the vibration of the inner vibrator 220 repeats under the action of the elastic deformation of the inner shrapnel.
  • the vibration is transmitted to the vibrating shell 210 through the inner shrapnel, so that the vibrating shell 210 vibrates in the same direction; then the vibration of the vibrating shell 210 is transmitted to the housing 110 of the vibration motor through the outer shrapnel 310, so that the vibrating motor The whole vibrates along the first direction.
  • the outer elastic piece 310 only plays the role of transmitting vibration to the housing 110 of the vibration motor, and basically does not Elastic deformation occurs in the second direction. It can be seen that the outer elastic piece 310 can not only provide linear guidance for the outer vibrator and elastic force to return to the equilibrium position when the vibration motor vibrates in the first direction; it can also play a role in transmitting vibration when the vibration motor vibrates in the second direction. role. Such a design can greatly improve the stability of the vibration motor.
  • the vibration of the external vibrator 200 When the external vibrator 200 vibrates along the first direction under the action of the ampere force generated by the first stator 410 and the external vibrating magnetic group 230, the vibration of the external vibrator 200 repeatedly vibrates under the action of the elastic deformation of the external elastic piece 310, and at the same time Vibration is directly transmitted to the housing 110 of the vibration motor through the outer elastic piece 310 , so that the vibration motor as a whole vibrates along the first direction.
  • the inner elastic piece since the inner elastic piece has relatively high rigidity in the first direction, the inner elastic piece will basically not be elastically deformed along the first direction during the vibration of the outer vibrator 200 .
  • the counterweight 221 is arranged in a cuboid shape; the width direction of the counterweight 221 is the same as the first direction, and the height direction of the counterweight 221 is the same as the second direction.
  • the counterweight 221 has two end surfaces located along its length direction; the inner vibrating magnetic group 222 and the outer vibrating magnetic group 230 are respectively fixed on the two end surfaces of the counterweight 221 .
  • the counterweight 221 also has two long sides located in its height direction; the at least two inner elastic members 320 are disposed on the two long sides of the counterweight 221 . In this way, the vibration developed can vibrate in the height direction thereof through the inner vibrator 220 , and can vibrate in the width direction through the outer vibrator 200 .
  • the first stator 410 includes a first iron core 411 and a first coil 412 surrounding the first iron core 411 .
  • the second stator 420 includes a second iron core 421 and a second coil 422 surrounding the second iron core 421 .
  • the external vibrator 200 can be made to vibrate along the first direction.
  • the inner vibrator 220 can be made to vibrate along the second direction.
  • the inner vibrating magnetic group 222 includes at least two magnets, and the magnets of the inner vibrating magnetic group 222 are arranged along the second direction; and/or, the outer vibrating magnetic group 230 includes at least two magnets , and, the magnets of the external vibration magnetic group 230 are arranged along the first direction.
  • the first coil 412 of the first stator 410 is arranged in an oval shape, and the long axis of the first coil 412 extends along the second direction (ie, the up-down direction in FIG. 1 );
  • the magnets are arranged at intervals along the first direction (i.e. the front-rear direction in FIG. 1 ), so that the long sides of the magnets of the external vibration group 230 are perpendicular to the short axis direction of the first coil 412, so that the outer vibration group 230
  • the magnetization direction is perpendicular to the plane where the first stator 410 is located. In this way, when the vibration motor inputs the corresponding operating frequency of the first stator 410, the first stator 410 and the outer vibrating magnetic group 230 induce an ampere force along the first direction to drive the outer vibrator 200 along the first direction. direction vibration.
  • the second coil 422 of the second stator 420 is arranged in an oval shape, and the long axis of the second coil 422 extends along the first direction (ie, the front-rear direction in FIG. 1 ); Arranged at intervals along the second direction (that is, the up and down direction in FIG. 1 ), so that the long sides of the magnets of the inner vibrating magnetic group 222 are perpendicular to the short axis direction of the second coil 422, so that the charging of the inner vibrating magnetic group 222
  • the magnetic direction is perpendicular to the plane where the second stator 420 is located.
  • the vibration motor inputs the corresponding operating frequency of the second stator 420
  • the second stator 420 and the inner vibrating magnetic group 222 induce an ampere force along the second direction to drive the inner vibrator 220 to vibrate in the second direction .
  • the housing 110 includes a main shell 110 and two shell cover plates 120; wherein, the main shell 110 penetrates along the second direction to form two openings; the two shell cover plates 120 are respectively It is used to cover the two openings of the main case 110 .
  • the outer vibrator 200, the first stator 410, and the second stator 420 can be installed into the main casing 110 through the opening of the main casing 110, and then the two casing cover plates 120 can be covered with the main casing. 110 two openings, and finally the shell cover plate 120 and the main shell 110 are connected and fixed.
  • the shell cover plate 120 and the main shell 110 are connected and fixed by welding; as another example, a buckle structure that cooperates with each other is provided on the shell cover plate 120 and the main shell 110, so that the shell cover plate 120 and the main shell 110 are snapped together.
  • the structure is connected and fixed; as another example, the case cover plate 120 and the main case 110 can also be bonded and fixed by using an adhesive material.
  • screws may also be used to pass through and fix the case cover plate 120 and the main case 110 .
  • a reasonable design can be made according to actual production requirements, and no limitation is set here.
  • the vibration motor can be applied to an electronic device, and the electronic device can be a mobile phone, a tablet computer, a handheld game console, a handheld multimedia entertainment device and the like.

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

Abstract

本发明公开一种振动马达，所述振动马达包括壳体、外振子、第一定子及第二定子；其中，所述壳体具有相交的第一方向和第二方向；所述外振子沿所述第一方向可振动地安装于所述壳体内，所述外振子包括振壳、内振子及外振磁组；所述内振子沿所述第二方向可振动地设置在所述振壳内，所述内振子包括配重块和固定在所述配重块一端的内振磁组；所述外振磁组固定在所述配重块的另一端；所述第一定子设在壳体内，并与所述外振磁组相对应；所述第二定子设在壳体内，并与所述内振磁组相对应。本发明的振动马达能够实现双向振动，以提高振动马达的使用体验。

Description

振动马达 技术领域
本发明涉及电子装置技术领域，特别涉及一种振动马达。
背景技术
随着科技技术的发展，各种各样的电子装置产品进入到人们的工作及生活中。这些电子装置的内部通常配置有振动马达，以利用该振动马达来做系统振动传导。然而，传统的振动马达通常只能朝单一方向振动，这使得振动方向较为单一，使得传统振动马达的使用体验较差。
发明内容
本发明的主要目的是提出一种振动马达，旨在使得振动马达实现双向振动，以提高振动马达的使用体验。
为实现上述目的，本发明提出一种振动马达，所述振动马达包括壳体、外振子、第一定子及第二定子；其中，所述壳体具有相交的第一方向和第二方向；所述外振子沿所述第一方向可振动地安装于所述壳体内，所述外振子包括振壳、内振子及外振磁组；所述内振子沿所述第二方向可振动地设置在所述振壳内，所述内振子包括配重块和固定在所述配重块一端的内振磁组；所述外振磁组固定在所述配重块的另一端；所述第一定子设在壳体内，并与所述外振磁组相对应；所述第二定子设在壳体内，并与所述内振磁组相对应。
可选地，所述振动马达还包括至少两个外弹性件，所述至少两个外弹性件分别设置在所述外振子的位于所述第一方向的相对两侧，每一个所述外弹性件均连接所述外振子的振壳和所述壳体，以将所述外振子悬置在所述壳体内。
可选地，所述至少两个外弹性件为外弹片；其中一个所述外弹片与所述外振子的一端连接，其另一端朝背离所述外振子的方向翘起而与所述壳体连接；另一个所述外弹片则与所述外振子的另一端连接，其另一端朝背离所述外振子的方向翘起而与所述壳体连接。
可选地，所述外弹片的长度大于所述外振子的长度，使得所述外弹片的与所述壳体连接的一端可延伸至所述第一定子或第二定子的一侧。
可选地，所述外振子还包括至少两个内弹性件，所述至少两个内弹性件分别设置在所述配重块的位于所述第二方向的相对两侧，每一个所述内弹性件均连接所述振壳和所述配重块，以将所述配重块悬置在所述振壳内。
可选地，所述至少两个内弹性件为内弹片；其中一个所述内弹片与所述配重块的一端连接，其另一端朝背离所述配重块的方向翘起而与所述振壳连接；另一个所述内弹片则与所述配重块的另一端连接，其另一端朝背离所述配重块的方向翘起而与所述振壳连接。
可选地，所述配重块呈长方体状设置，所述配重块的宽度方向与所述第一方向相同，所述配重块的高度方向与所述第二方向相同。
可选地，所述第一定子包括第一铁芯及环绕在所述第一铁芯环周的第一线圈；和/或，所述第二定子包括第二铁芯及环绕在所述第二铁芯环周的第二线圈。
可选地，所述壳体包括主壳和两个壳盖板；其中，所述主壳沿所述第二方向贯通，而形成有两个敞口；两个所述壳盖板分别用以盖合所述主壳的两个敞口。
可选地，所述内振磁组包括至少两个磁铁，并且，所述内振磁组的磁铁沿所述第二方向排布；和/或，所述外振磁组包括至少两个磁铁，所述外振磁组的磁铁沿所述第一方向排布。
本发明的技术方案，通过在振动马达的壳体内配置外振子、第一定子及第二定子；其中，外振子沿所述第一方向可振动地安装于壳体内，外振子包括振壳、内振子及外振磁组；内振子沿所述第二方向可振动地设置在振壳内，内振子包括配重块、固定在配重块一端的内振磁组；外振磁组固定在配重块的另一端；第一定子设在壳体内，并与外振子的外振磁组相对应，以与外振子配合驱动所述振动马达沿第一方向振动；第二定子设在壳体内，并与内振子的内振磁组相对应，以与内振子配合驱动所述振动马达沿第二方向振动(具体参见后文介绍)，从而实现所述振动马达可双频双向振动，有效改善振动马达的使用体验。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术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发明的一些实施例，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示出的结构获得其他的附图。
图1为本发明的振动马达的结构分别示意图；
图2为图1中振动马达沿第一方向的结构布局示意图；
图3为图1中振动马达沿第二方向的结构布局示意图；
图4为图2中振动马达拆除壳体后的结构示意图；
图5为图4中振动马达拆除外弹性件和振壳后的结构示意图。
附图标号说明：
标号 名称 标号 名称
100 壳体 310 外弹性件/外弹片
110 壳主体 320 内弹性件/内弹片
120 壳盖板 410 第一定子
200 外振子 411 第一铁芯
210 振壳 412 第一线圈
220 内振子 420 第二定子
221 配重块 421 第二铁芯
222 内振磁组 422 第二线圈
230 外振磁组    
本发明目的实现、功能特点及优点将结合实施例，参照附图做进一步说明。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明的一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
需要说明，若本发明实施例中有涉及方向性指示(诸如上、下、左、右、 前、后……)，则该方向性指示仅用于解释在某一特定姿态(如附图所示)下各部件之间的相对位置关系、运动情况等，如果该特定姿态发生改变时，则该方向性指示也相应地随之改变。
另外，若本发明实施例中有涉及“第一”、“第二”、“内”、“外”等的描述，则该“第一”、“第二”等的描述仅用于描述目的，而不能理解为指示或暗示其相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”、“内”、“外”的特征可以明示或者隐含地包括至少一个该特征。另外，各个实施例之间的技术方案可以相互结合，但是必须是以本领域普通技术人员能够实现为基础，当技术方案的结合出现相互矛盾或无法实现时应当认为这种技术方案的结合不存在，也不在本发明要求的保护范围之内。
请参阅图1至图3，在本发明振动马达的一实施例中，所述振动马达包括壳体110、外振子200、第一定子410及第二定子420。其中，壳体110具有相交的第一方向和第二方向；外振子200沿所述第一方向可振动地安装于壳体110内，外振子200包括振壳210、内振子220及外振磁组230；内振子220沿所述第二方向可振动地设置在振壳210内，内振子220包括配重块221和固定在配重块221一端的内振磁组222；外振磁组230固定在配重块221的另一端；第一定子410设在壳体110内，并与外振磁组230相对应；第二定子420设在壳体110内，并与内振磁组222相对应。
具体说来，外振子200整体沿所述第一方向可振动地安装于壳体110内。外振子200与第一定子410构成驱动所述振动马达沿所述第一方向振动的第一驱动组件。内振子220则整体沿所述第二方向可振动地安装于外振子200的振壳210内。内振子220与第二定子420构成驱动所述振动马达沿所述第二方向振动的第二驱动组件。所述第一驱动组件和所述第二驱动组件适用于在不同的频率下工作。举例说来，假设所述第一驱动组件的工作频率为P 1，所述第二驱动组件的工作频率为P 2，P 2与P 1不相同。
请参阅图2，当向所述振动马达输入的频率为P 1时，所述第一驱动组件工作，第一定子410和外振子200的外振磁组230发生感应而产生沿第一方向(如图2中的前后方向所示)的安培力；该外振子200在所述安培力的作 用下沿第一方向发生振动，外振子200的振动传递给振动马达的壳体110，从而使得振动马达沿第一方向振动。
请参阅图3，当向所述振动马达输入的频率为P 2时，所述第二驱动组件工作，第二定子420和内振子220的内振磁组222发生感应而产生沿第二方向(如图3中的上下方向所示)的安培力；该内振子220在所述安培力的作用下沿第二方向发生振动，内振子220的振动先传递给振壳210，使得振壳210也发生同向振动，然后振壳210的振动又传递到振动马达的壳体110上，如此也就可以使得振动马达整体沿第二方向振动。
也就是说，在所述振动马达输入的频率与其中任一个驱动组件的工作频率相同时，则相应的驱动组件工作而使得所述振动马达沿相应的方向振动。可以理解的是，外振子200包含了内振子220在内，也就是说，外振子200和内振子220共同使用一个配重块221，实现了所述振动马达可在第一方向和第二方向这两个不同方向上发生振动，如此，可以充分利用所述振动马达的振动空间，实现双向振动，进而可使得所述振动马达获得的驱动力大，且平稳性更高，产品漏磁率较低。
至于所述振动马达的第一方向和第二方向的具体朝向，则可以根据所述振动马达的具体形状结构进行设计。可选地，所述振动马达整体可以设置为正方体结构或长方体结构；亦或者，所述振动马达整体还可以设置为类正方体结构设置或类长方体结构。所述类长方体结构指的是具有基本的长方体结构的长宽高特征，但其中一个或几个平面不为平面，而是弧面或折面；或者，也可以各个表面之间的角度不是90°。
具体在此，所述振动马达整体设置为长方体结构。所述振动马达具有宽度方向、长度方向及高度方向。如图1所示，左右方向表示为所述振动马达的长度方向；上下方向则表示为所述振动马达的高度方向；前后方向则表示为所述振动马达的宽度方向。前述第二方向和第一方向可选为上下方向、左右方向及前后方向中的任意两个方向。在上述实施例及后续实施例，主要以第一方向为前后方向、第二方向为上下方向进行介绍说明。
本发明的技术方案，通过在振动马达的壳体110内配置外振子200、第一定子410及第二定子420；其中，外振子200沿所述第一方向可振动地安装于壳体110内，外振子200包括振壳210、内振子220及外振磁组230；内振子 220沿所述第二方向可振动地设置在振壳210内，内振子220包括配重块221、固定在配重块221一端的内振磁组222；外振磁组230固定在配重块221的另一端；第一定子410设在壳体110内，并与外振子200的外振磁组230相对应，以与外振子200配合驱动所述振动马达沿第一方向振动；第二定子420设在壳体110内，并与内振子220的内振磁组222相对应，以与内振子220配合驱动所述振动马达沿第二方向振动(具体参见前文介绍)，从而实现所述振动马达可双频双向振动，有效改善振动马达的使用体验。
请参阅图1、图2及图4，在一实施例中，所述振动马达还包括至少两个外弹性件310，所述至少两个外弹性件310分别设置在外振子200的位于所述第一方向的相对两侧，每一个外弹性件310均连接外振子200的振壳210和壳体110，以将外振子200悬置在壳体110内。如此，在外振子200沿所述第一方向发生振动时，外弹性件310在外振子200和壳体110之间的作用力下发生弹性变形，从而为外振子200提供线性导向和回复到平衡位置的弹力，使得外振子200可持续振动。
至于外弹性件310的结构，外弹性件310应当是能够发生可恢复性弹性形变的弹性结构。外弹性件310可以是但不局限于弹片、弹簧等结构。可选地，在本实施例中，所述至少两个外弹性件310为外弹片310；其中一个外弹片310与外振子200的一端连接，其另一端朝背离外振子200的方向翘起而与壳体110连接；另一个外弹片310则与外振子200的另一端连接，其另一端朝背离外振子200的方向翘起而与壳体110连接。
具体地，振壳210具有沿所述第一方向相对的两个第一侧壁，所述两个第一侧壁与壳体110的内壁面间隔形成所述第一间隙。两个外弹片310分别设置在两个所述第一间隙内。并且，其中一个外弹片310与振壳210的其中一个第一侧壁的左端连接，该外弹片310的另一端则翘起而与壳体110连接；另一个外弹片310与振壳210的另一个第一侧壁的右端连接，该外弹片310的另一端则翘起而与壳体110连接。如此，可确保外弹片310可以稳定支撑外振子200，使得外振子200可以稳定振动并回复到平衡位置。在此过程中，由于外弹片310在第一方向的刚性较大，所以，在内振子220振动的过程中，外弹片310仅起到向振动马达的壳体110传递振动的作用，而基本不发生弹性形变。
外弹片310的长度可以与外振子200的长度相同，也可以略大于外振子200的长度。在此可选地，将外弹片310的长度设置为大于外振子200的长度，使得外弹片310的与壳体110连接的一端可延伸至第一定子410或第二定子420的一侧。也就是说，位于外振子200前侧的外弹片310，其与壳体110连接的一端处在第二定子420和壳体110内壁面之间；而位于外振子200后侧的外弹片310，其与壳体110连接的一端处在第二定子420和壳体110内壁面之间。如此设计，不仅可以增大所述外振子的平稳性；并且，还可以在所述振动马达在振动过程中，避免第一定子410和第二定子420与壳体110发生碰撞，保护第一定子410和第二定子420不受到撞击损坏。
请参阅图1、图3及图5，在一实施例中，所述外振子还包括至少两个内弹性件320，所述至少两个内弹性件320分别设置在配重块221的位于所述第二方向的相对两侧，每一个内弹性件320均连接振壳210和配重块221，以将配重块221悬置在振壳210内。如此，在内振子220沿所述第二方向方向发生振动时，内弹性件320在内振子220和振壳210之间的作用力下发生弹性变形，从而为内振子220提供线性导向和回复到平衡位置的弹力，使得内振子220可持续振动。
至于内弹性件320的结构，内弹性件320应当是能够发生可恢复性弹性形变的弹性结构。内弹性件320可以是但不局限于弹片、弹簧等结构。可选地，在本实施例中，所述至少两个内弹性件320为内弹片；其中一个所述内弹片与配重块221的一端连接，其另一端朝背离配重块221的方向翘起而与振壳210连接；另一个所述内弹片则与配重块221的另一端连接，其另一端朝背离配重块221的方向翘起而与振壳210连接。
具体地，振壳210具有沿所述第二方向方向相对的两个第二侧壁，所述两个第二侧壁与配重块221间隔形成有第二间隙。两个内弹片分别设置在两个所述第二间隙内。并且，其中一个内弹片与配重块221的左端连接，该内弹片的另一端则翘起而与振壳210的其中一个第二侧壁连接；另一个内弹片与配置块的另一端连接，该内弹片的另一端则翘起而与振壳210的另一个第二侧壁连接。如此，可确保所述内弹片可以稳定支撑内振子220，使得内振子220可以稳定振动并回复到平衡位置。
值得一提的是，当内振子220在第二定子420和内振磁组222产生的安 培力作用下沿所述第二方向振动时，内振子220的振动在内弹片的弹性形变作用下反复振动，同时也通过该内弹片将振动传递给振壳210，使得振壳210相发生同向振动；进而振壳210的振动又经外弹片310传递给振动马达的壳体110，从而使得振动马达整体沿第一方向振动。在此过程中，由于外弹片310在第一方向的刚性较大，所以，在内振子220振动的过程中，外弹片310仅起到向振动马达的壳体110传递振动的作用，而基本不会沿第二方向发生弹性形变。可见，外弹片310不仅可在振动马达沿第一方向振动时，起到为外振子提供线性导向和回复到平衡位置的弹力的作用；还可以在振动马达沿第二方向振动时起到传递振动的作用。如此设计，可以大大提高所述振动马达的平稳性。
而当外振子200在第一定子410和外振磁组230产生的安培力作用下沿所述第一方向振动时，外振子200的振动在外弹片310的弹性形变作用下反复振动，同时也通过该外弹片310将振动直接传递给振动马达的壳体110，从而使得振动马达整体沿第一方向振动。在此过程中，由于内弹片在第一方向的刚性较大，所以，在外振子200振动的过程中，内弹片在基本不会沿第一方向发生弹性形变。
请参阅图5，在一实施例中，配重块221呈长方体状设置；配重块221的宽度方向与所述第一方向相同，配重块221的高度方向与所述第二方向相同。具体地，配重块221具有位于其长度方向的两个端面；内振磁组222和外振磁组230分别固定在配重块221的两个端面上。配重块221还具有位于其高度方向的两个长侧面；所述至少两个内弹性件320设置在配重块221的两个长侧面上。如此，所述振动发达可通过内振子220沿其高度方向振动，并通过外振子200可以沿宽度方向振动。
基于上述任意一实施例，第一定子410包括第一铁芯411及环绕在所述第一铁芯411环周的第一线圈412。第二定子420包括第二铁芯421及环绕在所述第二铁芯421环周的第二线圈422。在向第一定子410的第一线圈412输入相应的工作频率，可使得外振子200沿所述第一方向振动。在向第二定子420的第二线圈422输入相应的工作频率，可使得内振子220沿所述第二方向振动。
在一实施例中，内振磁组222包括至少两个磁铁，并且，该内振磁组222 的磁铁沿所述第二方向排布；和/或，外振磁组230包括至少两个磁铁，并且，该外振磁组230的磁铁沿所述第一方向排布。
具体说来，第一定子410的第一线圈412呈椭圆形设置，该第一线圈412的长轴沿所述第二方向延伸(即图1中的上下方向)；外振磁组230的磁铁沿所述第一方向间隔排布(即图1中的前后方向)，使得该外振磁组230的磁铁的长边垂直于第一线圈412的短轴方向，从而外振磁组230的充磁方向与第一定子410所在平面垂直。如此，在所述振动马达输入第一定子410相应的工作频率时，第一定子410和外振磁组230感应产生沿所述第一方向的安培力，以驱动外振子200沿第一方向振动。
同理地，第二定子420的第二线圈422呈椭圆形设置，该第二线圈422的长轴沿所述第一方向延伸(即图1中的前后方向)；内振磁组222的磁铁沿所述第二方向间隔排布(即图1中的上下方向)，使得该内振磁组222的磁铁的长边垂直于第二线圈422的短轴方向，从而内振磁组222的充磁方向与第二定子420所在平面垂直。如此，在所述振动马达输入第二定子420相应的工作频率时，第二定子420和内振磁组222感应产生沿所述第二方向的安培力，以驱动内振子220沿第二方向振动。
基于上述任意一实施例，壳体110包括主壳110和两个壳盖板120；其中，主壳110沿所述第二方向贯通，而形成有两个敞口；两个壳盖板120分别用以盖合主壳110的两个敞口。装配所述振动马达时，可以先将外振子200与第一定子410、第二定子420自主壳110的敞口安装到主壳110内之后，再将两个壳盖板120盖合主壳110的两个敞口，最后将壳盖板120与主壳110连接固定即可。
至于壳盖板120与主壳110连接固定方式，则可以由多种连接方式。例如，将壳盖板120与主壳110通过焊接连接固定；再例如，在壳盖板120与主壳110上设置相互配合的卡扣结构，以将壳盖板120与主壳110通过卡扣结构连接固定；又例如，还可以采用粘性材料将壳盖板120与主壳110粘接固定。当然，在其他实施例中，还可以采用螺钉将壳盖板120与主壳110穿设连接固定。具体可根据实际生产需求进行合理设计，在此不设限定。
基于上述任意一实施例，所述振动马达可以应用于电子装置中，所述电子装置可以是手机、平板电脑、掌上游戏机、掌上多媒体娱乐装置等产品。
以上所述仅为本发明的优选实施例，并非因此限制本发明的专利范围，凡是在本发明的发明构思下，利用本发明说明书及附图内容所作的等效结构变换，或直接/间接运用在其他相关的技术领域均包括在本发明的专利保护范围内。

Claims (10)

  1. 一种振动马达，其特征在于，所述振动马达包括：
    壳体，所述壳体具有相交的第一方向和第二方向；
    外振子，所述外振子沿所述第一方向可振动地安装于所述壳体内，所述外振子包括振壳、内振子及外振磁组；所述内振子沿所述第二方向可振动地设置在所述振壳内，所述内振子包括配重块和固定在所述配重块一端的内振磁组；所述外振磁组固定在所述配重块的另一端；
    第一定子，所述第一定子设在壳体内，并与所述外振磁组相对应；以及
    第二定子，所述第二定子设在壳体内，并与所述内振磁组相对应。
  2. 如权利要求1所述的振动马达，其特征在于，所述振动马达还包括至少两个外弹性件，所述至少两个外弹性件分别设置在所述外振子的位于所述第一方向的相对两侧，每一个所述外弹性件均连接所述外振子的振壳和所述壳体，以将所述外振子悬置在所述壳体内。
  3. 如权利要求2所述的振动马达，其特征在于，所述至少两个外弹性件为外弹片；其中一个所述外弹片与所述外振子的一端连接，其另一端朝背离所述外振子的方向翘起而与所述壳体连接；另一个所述外弹片则与所述外振子的另一端连接，其另一端朝背离所述外振子的方向翘起而与所述壳体连接。
  4. 如权利要求3所述的振动马达，其特征在于，所述外弹片的长度大于所述外振子的长度，使得所述外弹片的与所述壳体连接的一端可延伸至所述第一定子或第二定子的一侧。
  5. 如权利要求1至4任意一项所述的振动马达，其特征在于，所述外振子还包括至少两个内弹性件，所述至少两个内弹性件分别设置在所述配重块的位于所述第二方向的相对两侧，每一个所述内弹性件均连接所述振壳和所述配重块，以将所述配重块悬置在所述振壳内。
  6. 如权利要求5所述的振动马达，其特征在于，所述至少两个内弹性件为内弹片；其中一个所述内弹片与所述配重块的一端连接，其另一端朝背离所述配重块的方向翘起而与所述振壳连接；另一个所述内弹片则与所述配重块的另一端连接，其另一端朝背离所述配重块的方向翘起而与所述振壳连接。
  7. 如权利要求1至4任意一项所述的振动马达，其特征在于，所述配重块呈长方体状设置，所述配重块的宽度方向与所述第一方向相同，所述配重块的高度方向与所述第二方向相同。
  8. 如权利要求1至4任意一项所述的振动马达，其特征在于，所述第一定子包括第一铁芯及环绕在所述第一铁芯环周的第一线圈；和/或，所述第二定子包括第二铁芯及环绕在所述第二铁芯环周的第二线圈。
  9. 如权利要求1至4任意一项所述的振动马达，其特征在于，所述壳体包括主壳和两个壳盖板；其中，所述主壳沿所述第二方向贯通，而形成有两个敞口；两个所述壳盖板分别用以盖合所述主壳的两个敞口。
  10. 如权利要求1至4任意一项所述的振动马达，其特征在于，所述内振磁组包括至少两个磁铁，并且，所述内振磁组的磁铁沿所述第二方向排布；和/或，所述外振磁组包括至少两个磁铁，所述外振磁组的磁铁沿所述第一方向排布。
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