WO2022127062A1 - 振动电机和电子设备 - Google Patents
振动电机和电子设备 Download PDFInfo
- Publication number
- WO2022127062A1 WO2022127062A1 PCT/CN2021/101758 CN2021101758W WO2022127062A1 WO 2022127062 A1 WO2022127062 A1 WO 2022127062A1 CN 2021101758 W CN2021101758 W CN 2021101758W WO 2022127062 A1 WO2022127062 A1 WO 2022127062A1
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- WIPO (PCT)
- Prior art keywords
- permanent magnet
- coil
- magnetic
- side wall
- elastic arm
- Prior art date
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- 230000005415 magnetization Effects 0.000 claims abstract description 21
- 238000004804 winding Methods 0.000 claims description 8
- 230000004308 accommodation Effects 0.000 claims description 7
- 230000001154 acute effect Effects 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 23
- 230000004044 response Effects 0.000 abstract description 8
- 230000009286 beneficial effect Effects 0.000 description 7
- 230000006698 induction Effects 0.000 description 6
- 230000003993 interaction Effects 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005389 magnetism Effects 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- 229910000676 Si alloy Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- KCZFLPPCFOHPNI-UHFFFAOYSA-N alumane;iron Chemical compound [AlH3].[Fe] KCZFLPPCFOHPNI-UHFFFAOYSA-N 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- XWHPIFXRKKHEKR-UHFFFAOYSA-N iron silicon Chemical compound [Si].[Fe] XWHPIFXRKKHEKR-UHFFFAOYSA-N 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000000844 transformation Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/34—Reciprocating, oscillating or vibrating parts of the magnetic circuit
-
- 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 the technical field of electronic products, in particular to a vibration motor and an electronic device applying the vibration motor.
- a vibration motor is usually installed on mobile terminals such as mobile phones or game consoles.
- the vibration motor is Electrical conduction, the vibrator in the vibration motor reciprocates relative to the stator to emit a vibration effect, which is transmitted to the surface of the mobile device and is perceived by the user, thereby providing vibration feedback for the user's operation, and the user can perceive the execution of the operation.
- the vibration performance of the vibration motor is relatively long, and the response time of the vibration motor after being electrically turned on is relatively long, and the vibration feedback cannot be performed in a short time.
- the main purpose of the utility model is to provide a vibration motor, which aims to make the vibration effect of the vibration motor better and the response time shorter.
- the vibration motor proposed by the present utility model includes:
- the housing is formed with a receiving space
- stator assembly includes a coil, the coil is accommodated in the accommodation space, and is fixed to the housing;
- a vibrator assembly the vibrator assembly is located in the receiving space, the vibrator assembly includes a magnetic circuit structure surrounding the outer side of the coil, the magnetic circuit structure includes a first permanent magnet and a second permanent magnet, the first permanent magnet A permanent magnet and the second permanent magnet are respectively located on opposite sides of the coil; the first permanent magnet is respectively provided with magnetic parts at both ends of the same side of the coil, and the second permanent magnet is located on the same side of the coil. The two ends of the same side of the coil are respectively provided with magnetic parts;
- the magnetic circuit structure After the coil is energized, the magnetic circuit structure is driven to move, and the vibrator assembly is driven to vibrate, and the magnetization directions of the first permanent magnet and the second permanent magnet are parallel to the vibration direction of the vibrator;
- the magnetization directions of the road structures are arranged in a clockwise direction or in a counterclockwise direction.
- the magnetic parts are all permanent magnets, and the magnetization direction of the magnetic parts is perpendicular to the vibration direction of the vibrator assembly.
- the magnetic components are all magnetic conductive blocks.
- the winding axis of the coil is perpendicular to the vibration direction of the vibrator.
- the stator assembly further includes a soft magnet, and the coil is wound on the outside of the soft magnet.
- the vibrator assembly also includes:
- the counterweight block is accommodated in the accommodation space and encloses a cavity, the magnetic circuit structure is accommodated in the cavity and fixed to the counterweight block;
- An elastic assembly the elastic assembly includes a first elastic member and a second elastic member, the first elastic member and the second elastic member are respectively located on both sides of the counterweight, and vibrate along the vibration of the vibrator assembly Arranged in direction, the first elastic member and the second elastic member are both connected to the counterweight and the housing.
- the counterweight block includes a first side wall and a second side wall that are arranged opposite to each other, and the first side wall and the second side wall extend along the vibration direction of the vibration assembly;
- the counterweight further comprises a third side wall and a fourth side wall arranged oppositely, and the third side wall and the fourth side wall are both connected to the first side wall and the second side wall, and enclosing the cavity, the first elastic member is connected to the third side wall and the casing, and the second elastic member is connected to the fourth side wall and the casing.
- the first elastic member includes a first elastic arm and a second elastic arm, the first elastic arm and one end of the second elastic arm are connected, and the free end of the first elastic arm is connected with the other end.
- the free end of the second elastic arm is connected to the housing, and the included angle between the first elastic arm and the second elastic arm is set at an acute angle.
- the free end of the first elastic arm is connected to a side of the third side wall adjacent to the first side wall;
- the two elastic members include a third elastic arm and a fourth elastic arm, the third elastic arm is connected with one end of the fourth elastic arm, and the free end of the third elastic arm is connected with the fourth side wall Adjacent to one side of the second side wall, the free end of the fourth elastic arm is connected to the housing, and the included angle between the third elastic arm and the fourth elastic arm is set at an acute angle.
- the utility model also provides an electronic device, comprising a vibration motor
- the vibration motor includes:
- stator assembly includes a housing and a coil, the housing is formed with an accommodation space, the coil is accommodated in the accommodation space, and is fixed to the casing;
- a vibrator assembly the vibrator assembly is located in the receiving space, the vibrator assembly includes a magnetic circuit structure surrounding the outer side of the coil, the magnetic circuit structure includes a first permanent magnet and a second permanent magnet, the first permanent magnet A permanent magnet and the second permanent magnet are respectively located on opposite sides of the coil; the first permanent magnet is respectively provided with magnetic parts at both ends of the same side of the coil, and the second permanent magnet is located on the same side of the coil. The two ends of the same side of the coil are respectively provided with magnetic parts;
- the magnetic circuit structure After the coil is energized, the magnetic circuit structure is driven to move, and the vibrator assembly is driven to vibrate.
- the magnetization directions of the first permanent magnet and the second permanent magnet are parallel to the vibration direction of the vibrator.
- the magnetization direction of the component is perpendicular to the vibration direction of the vibrator; the magnetization direction of the magnetic circuit structure is arranged in a clockwise direction or a counterclockwise direction.
- the first permanent magnet and the second permanent magnet are combined with a plurality of magnetic parts, and under their interaction, fewer magnetic lines of force spill out of the magnetic circuit structure, and fewer magnetic lines of force have no effect on the vibration of the vibrator.
- the magnetic lines of force used to drive the vibrator assembly to vibrate are more concentrated, and the magnetic induction intensity is larger, so that the stator assembly has a greater driving force to the vibrator assembly, and the vibration motor has a fast response speed and a good vibration effect.
- FIG. 1 is an exploded view of an embodiment of a vibration motor of the present invention
- Fig. 2 is the sectional view of the vibration motor in Fig. 1;
- Fig. 3 is a schematic diagram of the distribution of magnetic lines of force in the vibration motor in Fig. 2 where the magnetic member is a permanent magnet;
- FIG. 4 is a schematic diagram of the distribution of magnetic force lines in the vibration motor shown in FIG. 2 when the magnetic member is a magnetic conductive block.
- the present invention proposes a vibration motor 100, which is mainly used in electronic devices such as mobile phones or game consoles.
- the vibration motor 100 can be triggered to turn on, so that vibration
- the coil 13 in the stator assembly 10 of the motor 100 is energized, the energized coil 13 generates a magnetic field, and acts on the magnetic circuit structure 31 in the vibrator assembly 30, so that the magnetic circuit structure 31 drives the vibrator assembly 30 to vibrate, the stator assembly 10 and the vibrator assembly 30
- An elastic component 50 is connected therebetween, and the elastic component 50 can transmit the vibration of the vibrator component 30 to the stator component 10, so that the electronic device applying the vibration motor 100 can generate vibration feedback, and the vibration feedback is perceived by the user to prompt A user touch operation is performed.
- the vibration motor 100 of the present invention includes a casing 11, and the casing is formed with a receiving space.
- the vibration motor 100 also includes a stator assembly 10 and a vibrator assembly 30 . Both the stator assembly 10 and the vibrator assembly 30 are accommodated in the accommodating space, and the casing 11 is used for packaging the components of the vibration motor 100 .
- the casing 11 may include a first casing 111 and a second casing 112 that are covered with each other, the first casing 111 may be in the shape of a half shell formed by a bottom wall combined with a side wall, and the second casing 112 may be Similar to the shape of the first casing 111 , it can also be a flat plate structure, and the second casing 112 is connected to the side wall of the first casing 111 in the circumferential direction, so as to form a receiving space together.
- the stator assembly 10 includes a coil 13 .
- the coil 13 is accommodated in the receiving space and fixed to the housing 11 .
- the vibration motor 100 further includes a circuit board 16 for electrically connecting the coil 13 .
- the circuit board 16 can be a flexible circuit board. The other part of the board 16 is located on the outside of the casing 11 and is used to electrically connect to an external circuit structure, and specifically it can be electrically connected to a main control board of an electronic device.
- the vibrator assembly 30 includes a magnetic circuit structure 31 surrounding the outer side of the coil 13. During the electrification process of the coil 13, the current inside the coil 13 flows through the coil 13 to generate a magnetic field, and the magnetic field of the coil 13 acts on the magnetic circuit structure 31. Under the action of this force, the magnetic circuit structure 31 can perform reciprocating motion, and the magnetic circuit structure 31 drives the vibrator assembly 30 to reciprocate relative to the stator assembly 10 . Under the connection of the elastic assembly 50 , the reciprocating motion of the vibrator assembly 30 is transmitted to the stator assembly 10 the housing 11 to be perceived by the user.
- the magnetic circuit structure 31 in the technical solution of the present invention includes a first permanent magnet 311 and a second permanent magnet 312 , and the first permanent magnet 311 and the second permanent magnet 312 are respectively located on opposite sides of the coil 13 .
- the coil 13 can be made of copper wire wound into turns, the winding axis of the coil 13 is perpendicular to the vibration direction of the vibrator assembly 30, the winding direction of the copper wire in the coil 13 is the same, and it can be defined that the copper wire is wound to form a circle.
- the plane of the coil 13 is the winding plane of the coil 13 , and the direction of the center line connecting the first permanent magnet 311 and the second permanent magnet 312 is perpendicular to the winding plane of the coil 13 .
- Soft magnets 15 may also be provided inside the coils 13 in the stator assembly 10 , and the coils 13 are wound on the outside of the soft magnets 15 , that is, the copper wires in the coils 13 are wound around the outside of the soft magnets 15 to form multiple turns.
- the arrangement of the soft magnetic body 15 makes the magnetic field generated by the energized coil 13 stronger, the driving effect of the coil 13 on the magnetic circuit structure 31 is stronger, the starting speed of the vibrator motor is fast, and the vibration effect is stronger.
- the arrows in FIG. 2 show a situation of the magnetization direction.
- a plurality of magnetic members 313 are also arranged on the outside of the coil 13 , and the plurality of magnetic members 313 are arranged around the coil 13 .
- Magnetic parts 313 are respectively provided at both ends on the same side of the coil 13 , and magnetic parts 313 are respectively provided on the two ends of the second permanent magnet 312 on the same side of the coil 13 ;
- the coil 13 After the coil 13 is energized, it drives the magnetic circuit structure 31 to move, and drives the vibrator assembly 30 to vibrate.
- the magnetization directions of the first permanent magnet 311 and the second permanent magnet 312 are parallel to the vibration direction of the vibrator; the magnetization direction of the magnetic circuit structure 31 is along the Clockwise or counterclockwise.
- the first permanent magnet 311 and the second permanent magnet 312 are combined with a plurality of magnetic pieces 313, and under their interaction, fewer magnetic lines of force overflow from the magnetic circuit structure 31, and have no effect on the vibration of the vibrator.
- the magnetic field lines of the vibration motor are reduced, and the magnetic field lines used to drive the vibrator assembly 30 to vibrate are more concentrated, and the magnetic induction intensity is larger, so that the driving force of the stator assembly 10 to the vibrator assembly 30 is larger, the response speed of the vibration motor 100 is fast, and the vibration effect is good.
- the plurality of magnetic members 313 may be a first magnetic member 3131 , a second magnetic member 3132 , a third magnetic member 3133 and a fourth magnetic member 3134 , respectively.
- the first magnetic member 3131 and the second magnetic member 3132 are located on the side of the coil 13 where the first permanent magnet 311 is provided, and the first magnetic member 3131 and the second magnetic member 3132 are located at both ends of the first permanent magnet 311; the third The magnetic member 3133 and the fourth magnetic member 3134 are located on the side of the coil 13 where the second permanent magnet 312 is arranged, and the third magnetic member 3133 and the fourth magnetic member 3134 are located at both ends of the second permanent magnet 312 .
- the first magnetic member 3131 , the first permanent magnet 311 and the second magnetic member 3132 are arranged along the vibration direction of the vibrator assembly 30 ; the fourth magnetic member 3134 , the second permanent magnet 312 and the third magnetic member 3133 are arranged along the vibrator assembly 30
- the first magnetic member 3131 and the fourth magnetic member 3134 are arranged symmetrically with respect to the coil 13
- the second magnetic member 3132 and the third magnetic member 3133 are arranged symmetrically with respect to the coil 13 .
- the first magnetic member 3131 , the first permanent magnet 311 , the second magnetic member 3132 , the third magnetic member 3133 , the second permanent magnet 312 and the fourth magnetic member 3134 are arranged on the outside of the coil 13 in a clockwise direction, and the magnetization direction thereof Consistent with the arrangement direction, it can be arranged in sequence clockwise or counterclockwise.
- the magnetization directions of the first permanent magnet 311 and the second permanent magnet 312 are parallel to the winding plane of the coil 13, and the magnetization directions of the two are opposite;
- the magnetization direction of the plurality of magnetic members 313 is perpendicular to the vibration direction of the vibrator assembly 30 , that is, the first magnetic member 3131 , the second magnetic member 3132 , the third magnetic member 3133 and the fourth magnetic member 3134 .
- the magnetization direction is perpendicular to the vibration direction of the vibrator assembly 30 and is also perpendicular to the winding plane of the coil 13 .
- FIG. 3 shows a situation of the magnetic circuit structure 31 when the magnetic member 313 is a permanent magnet, that is, the magnetization in the magnetic circuit structure 31
- the direction is counterclockwise.
- the first magnetic member 3131 , the second magnetic member 3132 , the third magnetic member 3133 and the fourth magnetic member 3134 are all permanent magnets. Due to the principle that the adjacent two adjacent permanent magnets repel each other when the two adjacent magnetic poles are the same, and the adjacent two adjacent permanent magnets attract each other when the adjacent two magnetic poles are different, the first magnetic member 3131 and the first permanent magnet 311 are away from the coil 13 .
- the opposite sex attracts each other, which will reduce the overflowing magnetic field lines, while the side of the first magnetic member 3131 and the first permanent magnet 311 facing the coil 13 is the same-sex repulsion, which will reduce the magnetic field lines that are not beneficial to the vibration effect of the vibrator assembly 30.
- the acting force between the second magnetic member 3132 and the first permanent magnet is similar to the acting force between the first magnetic member 3131 and the first permanent magnet member, and will not be repeated one by one again.
- the interactions of the third magnetic member 3133 , the second permanent magnet 312 and the fourth magnetic member 3134 on the other side of the coil 13 also have similar distances.
- the first magnetic member 3131 and the fourth magnetic member 3134 have more magnetic lines of force, a higher density, and a higher magnetic induction intensity for the vibration effect of the vibrator assembly 30.
- the second magnetic member 3132 and the third magnetic member 3133 There are more magnetic lines of force beneficial to the vibrating effect of the vibrator assembly 30, the density is higher, and the magnetic induction intensity is higher.
- the directions of the magnetic lines of force are shown in FIG. 4
- the plurality of magnetic members 313 may all be magnetic conductive blocks, that is, the plurality of magnetic members 313 themselves do not have magnetism, but can The magnetism of the permanent magnet conducts.
- This figure shows a situation of the magnetic circuit structure 31 when the magnetic member 313 is a magnetic conductive block, that is, a situation where the magnetization direction of the magnetic circuit structure 31 is arranged counterclockwise.
- the first magnetic member 3131 , the second magnetic member 3132 , the third magnetic member 3133 and the fourth magnetic member 3134 are all magnetic conductive blocks.
- the overflowed magnetic lines of force on the first permanent magnet 311 and the magnetic lines of force that are not beneficial to the vibration of the vibrator assembly 30 are reduced.
- the reduction of the magnetic field lines that are not beneficial to the vibration will also be reduced, and through the conduction of the first magnetic member 3131 and the fourth magnetic member 3134, the one side of the first permanent magnet 311 and the second permanent magnet 312 will have more magnetic field lines that are beneficial to the vibration of the vibrator assembly 30. , the density is higher, and the magnetic induction intensity is higher.
- the other sides of the first permanent magnet 311 and the second permanent magnet 312 are beneficial to the vibration of the vibrator assembly 30.
- the way of arranging the plurality of magnetic members 313 as the magnetic conductive structure can not only reduce the cost of materials, but also there is no repulsion between the magnetic conductive block and the first permanent magnet 311 , and there is no repulsion between the magnetic conductive block and the second permanent magnet 312 . , which makes the installation process easier and improves the installation efficiency of the vibration motor 100 .
- the material that can be selected can be pure iron, low carbon steel, iron-silicon alloy or iron-aluminum alloy, and can also be other materials that are not magnetic but can have a magnetic conductivity effect. There is no specific limitation here.
- the magnetic circuit structure 31 may further include a magnetic conductive yoke 314, and the magnetic conductive yoke 314 may be arranged around the outside of the first permanent magnet 311, the second permanent magnet 312 and the plurality of magnetic members 313, so that the magnetic field lines of the magnetic circuit structure 31 are more concentrated to increase the vibration effect of the vibration motor 100 .
- the vibrator assembly 30 further includes a counterweight block 32 and an elastic assembly 50 accommodated in the accommodation space.
- the counterweight block 32 is enclosed to form a cavity, and the magnetic circuit structure 31 is accommodated in the cavity and fixed to the counterweight block 32 .
- the elastic assembly 50 includes a first elastic member 51 and a second elastic member 53.
- the first elastic member 51 and the second elastic member 53 are respectively located on both sides of the counterweight block 32 and are arranged along the vibration direction of the vibrator assembly 30.
- the member 51 and the second elastic member 53 are both connected to the counterweight 32 and the housing 11 .
- the coil 13 in the stator assembly 10 is energized, and the magnetic field generated by the coil 13 can drive the magnetic circuit structure 31 to move, and the magnetic circuit structure 31 drives the counterweight 32 to move together.
- the elastic assembly 50 can transmit the vibration effect of the vibrator assembly 30 to the casing 11 , the counterweight 32 increases the mass of the vibrator assembly 30 , so that the vibration effect of the vibrator assembly 30 is stronger, and the vibrator assembly 30 transmits the vibration effect of the casing 11 .
- the vibration effect is stronger, so that the vibration feedback effect of the vibration motor 100 is stronger.
- the weight block 32 includes a first side wall 321 and a second side wall 322 arranged oppositely, and the first side wall 321 and the second side wall 322 extend along the vibration direction of the vibrator assembly 30 ; the weight block also includes a pair of opposite sides.
- the third side wall 323 and the fourth side wall 324 of the 51 connects the third side wall 323 and the housing 11
- the second elastic member 53 connects the fourth side wall 324 and the housing 11 .
- the counterweight block 32 is enclosed to form a square frame structure, and the housing 11 may also have a wall surface opposite to each side wall of the counterweight block 32, so that the housing 11 is enclosed to form a square receiving space.
- the first elastic member 51 Connect the two walls facing the counterweight 32 and the housing 11, and the second elastic member 53 connects the two walls facing the counterweight 32 and the housing 11, so that the elastic component 50 can The vibration effect of the vibrator assembly 30 is transmitted to the casing 11 more efficiently.
- the first elastic member 51 includes a first elastic arm 511 and a second elastic arm 513, one end of the first elastic arm 511 and the second elastic arm 513 are connected, and the free end of the first elastic arm 511 is connected to the third side
- the free end of the wall 323 and the second elastic arm 513 is connected to the housing 11, and the included angle between the first elastic arm 511 and the second elastic arm 513 is set at an acute angle.
- the first elastic member 51 is composed of a first elastic arm 511 and a second elastic arm 513 arranged at an included angle. Compared with the first elastic member 51 formed by only one elastic arm, the The first elastic member 51 composed of the arm 511 and the second elastic arm 513 has a larger elastic coefficient, so that the energy loss during the vibration transmission process is smaller, and the response speed is faster.
- the structure of the second elastic member 53 can also be consistent with the structure of the first elastic member 51 , so that the vibration process is more uniform and the kinetic energy loss is smaller.
- the second elastic member 53 includes a third elastic arm 531 and a fourth elastic arm 533, and one end of the third elastic arm 531 and the fourth elastic arm 533
- the free end of the third elastic arm 531 is connected to the fourth side wall 324
- the free end of the fourth elastic arm 533 is connected to the housing 11, and the angle between the third elastic arm 531 and the fourth elastic arm 533 is set at an acute angle.
- the free end of the first elastic arm 511 is connected to the side of the third side wall 323 adjacent to the first side wall 321 , and in the second elastic member 53 , the free end of the third elastic arm 531 It is connected to the side of the fourth side wall 324 adjacent to the second side wall 322, so that in the vibration motor 100, the first elastic member 51 and the second elastic member 53 are arranged symmetrically in the center, so that the elastic component 50 can not only achieve the optimal The vibration transmission effect is improved, and the connection to the vibrator assembly 30 is more stable.
- the present invention also provides an electronic device, which includes a vibration motor 100.
- the specific structure of the vibration motor 100 refers to the above-mentioned embodiments. Since the electronic device adopts all the technical solutions of all the above-mentioned embodiments, at least the above-mentioned implementations All the beneficial effects brought by the technical solutions of the examples are not repeated here.
- the electronic device may include a housing and a main control board installed inside the housing, the vibration motor 100 is installed inside the housing, and the coil 13 of the vibration motor 100 is electrically connected to the main control board.
- the casing is provided with a touch part, the touch part can receive the touch of the user, and turn on the coil 13 of the vibration motor 100 according to the touch, and the vibration motor 100 performs corresponding vibration feedback according to the touch of the touch part .
- the touch part can be a pressure sensing part or a capacitive sensing part, and the touch part can be a touch display screen or a touch key.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Abstract
本实用新型公开一种振动电机和电子设备，其中，振动电机包括壳体、定子组件和振子组件，定子组件包括线圈，振子组件位于壳体的收容空间内，振子组件包括围设于线圈外侧的磁路结构，磁路结构包括第一永磁体和第二永磁体，第一永磁体和第二永磁体分别位于线圈的相对两侧；第一永磁体于线圈同侧的两端分别设有磁性件，第二永磁体于线圈同侧的两端分别设有磁性件；线圈通电后驱动磁路结构运动，并带动振子组件振动，第一永磁体和第二永磁体的充磁方向平行于振子的振动方向；磁路结构的充磁方向沿顺时针方向或沿逆时针方向排列。本实用新型技术方案使得振动电机的振动效果更好，响应时间更短。
Description
本实用新型涉及电子产品技术领域，特别涉及一种振动电机和应用该振动电机的电子设备。
随着移动设备领域的发展，为了符合消费者日益增长的消费需求，在手机或游戏机等移动终端上通常会设置振动电机，在用户对显示屏或按键进行触控过程中，该振动电机被电性导通，振动电机中的振子相对定子进行往复运动，以发出振动效果，该振动效果传递至移动设备的表面被用户感知，从而为用户的操作提供振动反馈，用户能够感知到操作的执行。
该实际应用过程中，振动电机的振动性能较长，振动电机在电性导通后响应时间较长，不能在短时间内执行振动反馈。
实用新型内容
本实用新型的主要目的是提供一种振动电机，旨在使得振动电机的振动效果更好，响应时间更短。
为实现上述目的，本实用新型提出的振动电机，包括：
壳体，所述壳体形成有收容空间；
定子组件，所述定子组件包括线圈，所述线圈容置于所述收容空间，并固定于所述壳体；和
振子组件，所述振子组件位于所述收容空间内，所述振子组件包括围设于所述线圈外侧的磁路结构，所述磁路结构包括第一永磁体和第二永磁体，所述第一永磁体和所述第二永磁体分别位于所述线圈的相对两侧；所述第一永磁体于所述线圈同侧的两端分别设有磁性件，所述第二永磁体于所述线圈同侧的两端分别设有磁性件；
所述线圈通电后驱动所述磁路结构运动，并带动所述振子组件振动，所 述第一永磁体和所述第二永磁体的充磁方向平行于所述振子的振动方向；所述磁路结构的充磁方向沿顺时针方向或沿逆时针方向排列。
可选地，所述磁性件均为永磁体，所述磁性件的充磁方向垂直于所述振子组件的振动方向。
可选地，所述磁性件均为导磁块。
可选地，所述线圈的绕线轴与所述振子的振动方向相垂直。
可选地，所述定子组件还包括软磁体，所述线圈绕设于所述软磁体外侧。
可选地，所述振子组件还包括：
配重块，所述配重块容置于所述收容空间内，并围合形成空腔，所述磁路结构容置于所述空腔，并固定于所述配重块；和
弹性组件，所述弹性组件包括第一弹性件和第二弹性件，所述第一弹性件和所述第二弹性件分别位于所述配重块的两侧，且沿所述振子组件的振动方向排列，所述第一弹性件和所述第二弹性件均连接于所述配重块和所述壳体。
可选地，所述配重块包括相对设置的第一侧壁和第二侧壁，所述第一侧壁和所述第二侧壁沿所述振动组件的振动方向延伸；
所述配重块还包括相对设置的第三侧壁和第四侧壁，所述第三侧壁和所述第四侧壁均连接于所述第一侧壁和所述第二侧壁，并围合形成所述空腔，所述第一弹性件连接所述第三侧壁和所述壳体，所述第二弹性件连接所述第四侧壁和所述壳体。
可选地，所述第一弹性件包括第一弹性臂和第二弹性臂，所述第一弹性臂和所述第二弹性臂的一端相连接，所述第一弹性臂的自由端连接所述第三侧壁，所述第二弹性臂的自由端连接所述壳体，所述第一弹性臂和所述第二弹性臂之间的夹角呈锐角设置。
可选地，所述第一弹性臂的自由端连接于所述第三侧壁邻近所述第一侧壁的一侧；
所述二弹性件包括第三弹性臂和第四弹性臂，所述第三弹性臂和所述第四弹性臂的一端相连接，所述第三弹性臂的自由端连接所述第四侧壁邻近所述第二侧壁的一侧，所述第四弹性臂的自由端连接所述壳体，所述第三弹性臂和所述第四弹性臂之间的夹角呈锐角设置。
本实用新型还提出一种电子设备，包括振动电机；
所述振动电机包括：
定子组件，所述定子组件包括壳体和线圈，所述壳体形成有收容空间，所述线圈容置于所述收容空间，并固定于所述壳体；和
振子组件，所述振子组件位于所述收容空间内，所述振子组件包括围设于所述线圈外侧的磁路结构，所述磁路结构包括第一永磁体和第二永磁体，所述第一永磁体和所述第二永磁体分别位于所述线圈的相对两侧；所述第一永磁体于所述线圈同侧的两端分别设有磁性件，所述第二永磁体于所述线圈同侧的两端分别设有磁性件；
所述线圈通电后驱动所述磁路结构运动，并带动所述振子组件振动，所述第一永磁体和所述第二永磁体的充磁方向平行于所述振子的振动方向，所述磁性件的充磁方向垂直于所述振子的振动方向；所述磁路结构的充磁方向沿顺时针方向或沿逆时针方向排列。
本实用新型技术方案中，第一永磁体和第二永磁体结合多个磁性件，在其相互作用下，能够使得磁路结构中外溢的磁力线较少，对振子的振动没有作用的磁力线减少，且能够使用于驱动振子组件振动的磁力线更加集中，磁感应强度更大，使得定子组件对振子组件的驱动力更大，该振动电机的响应速度快，振动效果好。
为了更清楚地说明本实用新型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示出的结构获得其他的附图。
图1为本实用新型振动电机一实施例的爆炸图；
图2为图1中振动电机的剖视图；
图3为图2中振动电机中磁性件为永磁体的磁力线分布示意图；
图4为图2中振动电机中磁性件为导磁块的磁力线分布示意图。
附图标号说明：
| 标号 | 名称 | 标号 | 名称 |
| 100 | 振动电机 | 3133 | 第三磁性件 |
| 10 | 定子组件 | 3134 | 第四磁性件 |
| 11 | 壳体 | 314 | 导磁轭 |
| 111 | 第一壳体 | 32 | 配重块 |
| 112 | 第二壳体 | 321 | 第一侧壁 |
| 13 | 线圈 | 322 | 第二侧壁 |
| 15 | 软磁体 | 323 | 第三侧壁 |
| 16 | 电路板 | 324 | 第四侧壁 |
| 30 | 振子组件 | 50 | 弹性组件 |
| 31 | 磁路结构 | 51 | 第一弹性件 |
| 311 | 第一永磁体 | 511 | 第一弹性臂 |
| 312 | 第二永磁体 | 513 | 第二弹性臂 |
| 313 | 磁性件 | 53 | 第二弹性件 |
| 3131 | 第一磁性件 | 531 | 第三弹性臂 |
| 3132 | 第二磁性件 | 533 | 第四弹性臂 |
本实用新型目的的实现、功能特点及优点将结合实施例，参照附图做进一步说明。
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，都属于本实用新型保护的范围。
需要说明，本实用新型实施例中所有方向性指示(诸如上、下、左、右、前、后……)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，在本实用新型中涉及“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”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，也不在本实用新型要求的保护范围之内。
参见图1，本实用新型提出一种振动电机100，该振动电机100主要应用于手机或游戏机等电子设备，当用户对电子设备进行触控操作时，可触发振动电机100的开启，使得振动电机100的定子组件10中的线圈13通电，通电线圈13产生磁场，并作用于振子组件30中的磁路结构31，使磁路结构31带动振子组件30进行振动，定子组件10和振子组件30之间连接有弹性组件50，该弹性组件50能够将振子组件30的振动传递至定子组件10上，从而使应用该振动电机100的电子设备能产生振动反馈，该振动反馈被用户感知，以提示用户触控操作被执行。
本实用新型的振动电机100包括壳体11，壳体形成有收容空间。振动电机100还包括定子组件10和振子组件30。定子组件10以及振子组件30均收容于该容纳空间内，该壳体11用于对振动电机100的零部件进行封装。该壳体11可以包括相盖合的第一壳体111和第二壳体112，该第一壳体111可以为底壁结合侧壁围合形成的半壳形状，第二壳体112可以为类似与第一壳体111的形状，也可以平板结构，该第二壳体112沿周向连接于第一壳体111的侧壁，共同围合形成收容空间。
定子组件10包括线圈13，该线圈13容置于收容空间，并固定于壳体11。振动电机100还包括用于电性连接线圈13的电路板16，该电路板16可以为柔性电路板，电路板16的一部分容置于壳体11的收容空间内，用于连接线圈13，电路板16的另一部分位于壳体11的外侧，用于电性连接外部的电路结构，具体可以为电性连接电子设备的主控板。
振子组件30包括围设于线圈13外侧的磁路结构31，在线圈13通电过程中，线圈13内部的电流流经线圈13而产生磁场，线圈13的磁场作用于磁路 结构31，在洛伦兹力的作用下，磁路结构31能够进行往复运动，该磁路结构31带动振子组件30相对定子组件10进行往复运动，在弹性组件50连接下，振子组件30的往复运动传递至定子组件10的壳体11，以被用户感知。
本实用新型技术方案中的磁路结构31包括第一永磁体311和第二永磁体312，该第一永磁体311和第二永磁体312分别位于线圈13的相对两侧。该线圈13可以由铜线绕制成匝，线圈13的绕线轴与振子组件30的振动方向相垂直，线圈13中铜线的绕制方向一致，可以定义铜线所绕制形成一圈所形成的平面为线圈13绕制平面，则，第一永磁体311和第二永磁体312的中心连线的方向垂直于该线圈13绕制平面。
定子组件10中的线圈13内侧还可以设置软磁体15，线圈13绕设于软磁体15的外侧，即，线圈13中的铜线围绕该软磁体15的外侧进行绕制成多圈。该软磁体15的设置使得通电线圈13产生的磁场更强，能够使线圈13对磁路结构31的驱动效果更强，振子电机的启动速度快，振动效果更强烈。
结合图2，图2中的箭头示出了充磁方向的一种情况，线圈13的外侧还设置有多个磁性件313，多个磁性件313围绕线圈13设置，第一永磁体311于线圈13同侧的两端分别设有磁性件313，第二永磁体312于线圈13同侧的两端分别设有磁性件313；
线圈13通电后驱动磁路结构31运动，并带动振子组件30振动，第一永磁体311和第二永磁体312的充磁方向平行于振子的振动方向；磁路结构31的充磁方向沿顺时针方向或沿逆时针方向排列。
本实用新型技术方案中，第一永磁体311和第二永磁体312结合多个磁性件313，在其相互作用下，能够使得磁路结构31中外溢的磁力线较少，对振子的振动没有作用的磁力线减少，且能够使用于驱动振子组件30振动的磁力线更加集中，磁感应强度更大，使得定子组件10对振子组件30的驱动力更大，该振动电机100的响应速度快，振动效果好。
结合图3和图4，该多个磁性件313可以分别为第一磁性件3131、第二磁性件3132、第三磁性件3133和第四磁性件3134。第一磁性件3131和第二磁性件3132位于线圈13设有第一永磁体311的一侧，且该第一磁性件3131和第二磁性件3132位于第一永磁体311的两端；第三磁性件3133和第四磁性件3134位于线圈13设有第二永磁体312的一侧，且该第三磁性件3133和 第四磁性件3134位于第二永磁体312的两端。该第一磁性件3131、第一永磁体311和第二磁性件3132沿着振子组件30的振动方向排列；第四磁性件3134、第二永磁体312和第三磁性件3133沿着振子组件30的振动方向排列；第一磁性件3131和第四磁性件3134相对线圈13对称设置，第二磁性件3132和第三磁性件3133相对线圈13对称设置。
该第一磁性件3131、第一永磁体311、第二磁性件3132、第三磁性件3133、第二永磁体312和第四磁性件3134沿顺时针方向排列于线圈13外侧，其充磁方向与其排列方向一致，具体可以沿顺时针或逆时针依次排列。其中，第一永磁体311和第二永磁体312的充磁方向平行于线圈13绕制平面，且两者的充磁方向相反；该多个磁性件313可以均为永磁体，在磁性件313为永磁体时，该多个磁性件313的充磁方向与振子组件30的振动方向垂直，即，第一磁性件3131、第二磁性件3132、第三磁性件3133和第四磁性件3134的充磁方向与振子组件30的振动方向垂直，同时也垂直于线圈13绕制平面。
如图3所示的实施例中，图3中示出了磁力线的方向，该图示给出了磁性件313为永磁体时磁路结构31的一种情况，即磁路结构31中充磁方向为逆时针排列的情况。该第一磁性件3131、第二磁性件3132、第三磁性件3133和第四磁性件3134均为永磁体。由于相邻两永磁体相邻两磁极相同时两者相互排斥，相邻两永磁体相邻两磁极相异时两者相互吸引的原理，第一磁性件3131和第一永磁体311背离线圈13的一侧为异性相吸，会使外溢的磁力线减少，而第一磁性件3131和第一永磁体311朝向线圈13的一侧为同性相斥，会使对振子组件30振动效果无益的磁力线减少；第二磁性件3132和第一永磁铁间的作用力与第一磁性件3131和第一永磁铁件的作用力类似，再次不再一一赘述。同理，线圈13另一侧的第三磁性件3133、第二永磁体312和第四磁性件3134的相互作用也具有类似远离。经上述分析可知，该实施例中，第一磁性件3131、第一永磁铁和第二磁性件3132的相互作用，第三磁性件3133、第二永磁铁和第四磁性件3134的相互作用，使得第一磁性件3131与第四磁性件3134间用于对振子组件30振动效果有益的磁力线更多、密度更大，磁感应强度更大；同理，第二磁性件3132与第三磁性件3133间用于对振子组件30振动效果有益的磁力线更多、密度更大，磁感应强度更大。该结构下，振动电机100的振动效果更好、响应速度更快。
如图4所示的实施例中，图4中示出了磁力线的方向，该多个磁性件313可以均为导磁块，即，对该多个磁性件313本身不具有磁性，但是能够对永磁体的磁性进行导通。该图示给出了磁性件313为导磁块时磁路结构31的一种情况，即磁路结构31中充磁方向为逆时针排列的情况。该第一磁性件3131、第二磁性件3132、第三磁性件3133和第四磁性件3134均为导磁块。由于磁力线会优先沿着导磁块进行传导，使得第一永磁体311上外溢的磁力线以及对振子组件30振动无益的磁力线减少，同理，第二永磁体312上外溢的磁力线以及对振子组件30振动无益的磁力线减少也会减少，而经第一磁性件3131和第四磁性件3134的传导，第一永磁体311和第二永磁体312的一侧对振子组件30振动有益的磁力线会更多、密度更大、磁感应强度更大，同理，经第二磁性件3132和第三磁性件3133的传导，第一永磁体311和第二永磁体312的另一侧对振子组件30振动有益的磁力线会更多、密度更大、磁感应强度更大。该结构下，振动电机100的振动效果更好、响应速度更快。将多个磁性件313设置为导磁结构的方式，不仅能够降低材料的成本，而且导磁块与第一永磁体311间不存在斥力，导磁块与第二永磁体312间也不存在斥力，使得安装过程更加简便，提高了振动电机100的安装效率。
当磁性件313为导磁块时，可以选择的材料具体可以为纯铁、低碳钢、铁硅合金或铁铝合金，也可以为其他本身不具有磁性，但能够具有导磁效果的材料，在此不做具体限定。
磁路结构31还可以包括导磁轭314，该导磁轭314可以围设于第一永磁体311、第二永磁体312和多个磁性件313的外侧，使得该磁路结构31的磁力线更加集中，以增大振动电机100的振动效果。
振子组件30还包括容置于收容空间内的配重块32和弹性组件50，配重块32围合形成空腔，磁路结构31容置于空腔，并固定于配重块32。弹性组件50包括第一弹性件51和第二弹性件53，第一弹性件51和第二弹性件53分别位于配重块32的两侧，且沿振子组件30的振动方向排列，第一弹性件51和第二弹性件53均连接于配重块32和壳体11。
定子组件10中的线圈13通电，线圈13产生的磁场能够驱动磁路结构31进行运动，该磁路结构31带动配重块32一起运动，该过程中，连接于配重块32和壳体11的弹性组件50能够将振子组件30的振动效果传递至壳体11， 该配重块32增加了振子组件30的质量，使得振子组件30的振动效果更加强烈，振子组件30传递至壳体11的振动效果更加强烈，使得振动电机100的振动反馈效果更加强烈。
参见图4，配重块32包括相对设置的第一侧壁321和第二侧壁322，第一侧壁321和第二侧壁322沿振子组件30的振动方向延伸；重块还包括相对设置的第三侧壁323和第四侧壁324，第三侧壁323和第四侧壁324均连接于第一侧壁321和第二侧壁322，并围合形成空腔，第一弹性件51连接第三侧壁323和壳体11，第二弹性件53连接第四侧壁324和壳体11。
配重块32围合形成方形框结构，壳体11也可以具有与配重块32的每个侧壁相对设置的壁面，以使壳体11围合形成方形的收容空间，第一弹性件51连接配重块32与壳体11相面对的两个壁面，第二弹性件53连接配重块32与壳体11相面对的两个壁面，使得振子组件30振动过程中弹性组件50能更高效的将振子组件30的振动效果传递至壳体11。
参见图4，第一弹性件51包括第一弹性臂511和第二弹性臂513，第一弹性臂511和第二弹性臂513的一端相连接，第一弹性臂511的自由端连接第三侧壁323，第二弹性臂513的自由端连接壳体11，第一弹性臂511和第二弹性臂513之间的夹角呈锐角设置。
该实施例中，第一弹性件51由呈夹角设置的第一弹性臂511和第二弹性臂513组成，相较于仅由一个弹性臂形成的第一弹性件51，该由第一弹性臂511和第二弹性臂513共同组成的第一弹性件51弹性系数更大，在传递振动过程中能量损失更小，响应速度更快。
第二弹性件53的结构也可以与第一弹性件51的结构一致，使得振动过程更加均匀，动能损失更小。当第二弹性件53与第一弹性件51的结构一致时，该第二弹性件53包括第三弹性臂531和第四弹性臂533，第三弹性臂531和第四弹性臂533的一端相连接，第三弹性臂531的自由端连接第四侧壁324，第四弹性臂533的自由端连接壳体11，第三弹性臂531和第四弹性臂533之间的夹角呈锐角设置。
进一步地，第一弹性件51中，第一弹性臂511的自由端连接于第三侧壁323邻近第一侧壁321的一侧，第二弹性件53中，第三弹性臂531的自由端连接于第四侧壁324邻近第二侧壁322的一侧，使得振动电机100中，第一 弹性件51和第二弹性件53呈中心对称设置，如此，该弹性组件50不仅能达到最佳的振动传递效果，且对振子组件30的连接更加稳定。
本实用新型还提出一种电子设备，该电子设备包括振动电机100，该振动电机100的具体结构参照上述实施例，由于本电子设备采用了上述所有实施例的全部技术方案，因此至少具有上述实施例的技术方案所带来的所有有益效果，在此不再一一赘述。
该电子设备可以包括外壳以及安装于外壳内部的主控板，该振动电机100安装于外壳内部，振动电机100的线圈13电性连接主控板。该外壳上设有触控部，该触控部能够接收用户的触控，并根据该触控接通振动电机100的线圈13，振动电机100根据该触控部的触控进行相应的振动反馈。该触控部可以为压力传感部件或电容传感部件，该触控部可以为触控显示屏还可以为触控按键。
以上所述仅为本实用新型的可选实施例，并非因此限制本实用新型的专利范围，凡是在本实用新型的发明构思下，利用本实用新型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实用新型的专利保护范围内。
Claims (10)
- 一种振动电机，其特征在于，包括：壳体，所述壳体形成有收容空间；定子组件，所述定子组件包括线圈，所述线圈容置于所述收容空间，并固定于所述壳体；和振子组件，所述振子组件位于所述收容空间内，所述振子组件包括围设于所述线圈外侧的磁路结构，所述磁路结构包括第一永磁体和第二永磁体，所述第一永磁体和所述第二永磁体分别位于所述线圈的相对两侧；所述第一永磁体于所述线圈同侧的两端分别设有磁性件，所述第二永磁体于所述线圈同侧的两端分别设有磁性件；所述线圈通电后驱动所述磁路结构运动，并带动所述振子组件振动，所述第一永磁体和所述第二永磁体的充磁方向平行于所述振子的振动方向；所述磁路结构的充磁方向沿顺时针方向或沿逆时针方向排列。
- 如权利要求1所述的振动电机，其特征在于，所述磁性件均为永磁体，所述磁性件的充磁方向垂直于所述振子组件的振动方向。
- 如权利要求1所述的振动电机，其特征在于，所述磁性件均为导磁块。
- 如权利要求3所述的振动电机，其特征在于，所述线圈的绕线轴与所述振子组件的振动方向相垂直。
- 如权利要求1至4中任一项所述的振动电机，其特征在于，所述定子组件还包括软磁体，所述线圈绕设于所述软磁体外侧。
- 如权利要求1至4中任一项所述的振动电机，其特征在于，所述振子组件还包括：配重块，所述配重块容置于所述收容空间内，并围合形成空腔，所述磁路结构容置于所述空腔，并固定于所述配重块；和弹性组件，所述弹性组件包括第一弹性件和第二弹性件，所述第一弹性件和所述第二弹性件分别位于所述配重块的两侧，且沿所述振子组件的振动方向排列，所述第一弹性件和所述第二弹性件均连接于所述配重块和所述壳体。
- 如权利要求6所述的振动电机，其特征在于，所述配重块包括相对设置的第一侧壁和第二侧壁，所述第一侧壁和所述第二侧壁沿所述振动组件的振动方向延伸；所述配重块还包括相对设置的第三侧壁和第四侧壁，所述第三侧壁和所述第四侧壁均连接于所述第一侧壁和所述第二侧壁，并围合形成所述空腔，所述第一弹性件连接所述第三侧壁和所述壳体，所述第二弹性件连接所述第四侧壁和所述壳体。
- 如权利要求7所述的振动电机，其特征在于，所述第一弹性件包括第一弹性臂和第二弹性臂，所述第一弹性臂和所述第二弹性臂的一端相连接，所述第一弹性臂的自由端连接所述第三侧壁，所述第二弹性臂的自由端连接所述壳体，所述第一弹性臂和所述第二弹性臂之间的夹角呈锐角设置。
- 如权利要求8所述的振动电机，其特征在于，所述第一弹性臂的自由端连接于所述第三侧壁邻近所述第一侧壁的一侧；所述二弹性件包括第三弹性臂和第四弹性臂，所述第三弹性臂和所述第四弹性臂的一端相连接，所述第三弹性臂的自由端连接所述第四侧壁邻近所述第二侧壁的一侧，所述第四弹性臂的自由端连接所述壳体，所述第三弹性臂和所述第四弹性臂之间的夹角呈锐角设置。
- 一种电子设备，其特征在于，包括如权利要求1至9中任意一项所述的振动电机。
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