WO2025002210A1 - 振动电机组件及电子设备 - Google Patents

振动电机组件及电子设备 Download PDF

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Publication number
WO2025002210A1
WO2025002210A1 PCT/CN2024/101802 CN2024101802W WO2025002210A1 WO 2025002210 A1 WO2025002210 A1 WO 2025002210A1 CN 2024101802 W CN2024101802 W CN 2024101802W WO 2025002210 A1 WO2025002210 A1 WO 2025002210A1
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WIPO (PCT)
Prior art keywords
motor
vibration
eccentric wheel
motor group
vibration motors
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2024/101802
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English (en)
French (fr)
Inventor
彭晓光
和宇庆朝邦
丁海阳
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Goertek Inc
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Goertek Inc
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Filing date
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Publication of WO2025002210A1 publication Critical patent/WO2025002210A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K33/00—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system
    • H02K33/18—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with coil systems moving upon intermittent or reversed energisation thereof by interaction with a fixed field system, e.g. permanent magnets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/06—Means for converting reciprocating motion into rotary motion or vice versa
    • H02K7/065—Electromechanical oscillators; Vibrating magnetic drives
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/06—Means for converting reciprocating motion into rotary motion or vice versa
    • H02K7/075—Means for converting reciprocating motion into rotary motion or vice versa using crankshafts or eccentrics

Definitions

  • the present invention relates to the technical field of vibration motor components, and in particular to a vibration motor component and an electronic device.
  • Vibration motors are widely used in all walks of life. They are devices that convert electrical energy into mechanical energy. Most existing vibration motors are linear motor rotors. The rotation generated when they reciprocate near the equilibrium position is symmetrical rotation, and they cannot generate asymmetric rotation (anisotropic rotation).
  • the main purpose of the present invention is to provide a vibration motor assembly and an electronic device, aiming to solve the technical problem that the motor in the prior art cannot provide anisotropic rotation.
  • the present invention provides a vibration motor assembly, including a first motor group and a second motor group, wherein the first motor group and the second motor group each include two vibration motors, and the four vibration motors are arranged along the same plane, and each of the vibration motors includes:
  • stator comprising a coil assembly, the coil assembly forming a cavity
  • An eccentric mover comprising a rotating shaft and an eccentric wheel mounted on the rotating shaft, the eccentric wheel comprising a magnetic component, the eccentric wheel being arranged in the cavity and being able to rotate in the cavity; the centers of the rotating shafts of the four vibration motors are respectively located at the four vertices of a quadrilateral;
  • a limiting member wherein the limiting member is used to limit the rotation angle of the eccentric wheel.
  • the eccentric wheel is formed with a notch, and the limiting member is arranged at the notch.
  • the limiting member is an arc segment
  • the notch is a fan-shaped notch
  • the center of the limiting member, the center of the fan-shaped notch, and the center of the rotating shaft are concentrically arranged, and the difference between the first center angle corresponding to the fan-shaped notch and the second center angle corresponding to the limiting member is 90°.
  • the eccentric wheel rotates at an angle ranging from 0° to 90°;
  • the two vibration motors In the first motor group, the two vibration motors have the same rotation direction, and the two vibration motors collide with the two corresponding limit members at the same time; in the second motor group, the two vibration motors have the same rotation direction, and the two vibration motors collide with the two corresponding limit members at the same time.
  • the two limit members are centrally symmetrical about the midpoint of the center line connecting the two rotating shafts; in the second motor group, the two limit members are centrally symmetrical about the midpoint of the center line connecting the two rotating shafts of the two vibration motors of the second motor group.
  • the two vibration motors of the first motor group are respectively a first motor and a second motor
  • the two vibration motors of the second motor group are respectively a third motor and a fourth motor
  • the first motor and the third motor are adjacently arranged
  • the second motor and the fourth motor are adjacently arranged; taking the perpendicular bisector of the line connecting the centers of the rotating shafts of the first motor and the third motor as the symmetry line, the limiting members in the first motor group and the second motor group are symmetrically arranged.
  • the magnetic assembly includes a magnetic conductive member, a permanent magnet and a mass block, the magnetic conductive member is sleeved on the rotating shaft, and the permanent magnet and the mass block are arranged on the outer periphery of the magnetic conductive member.
  • the permanent magnet includes two sub-magnets, the two sub-magnets are evenly spaced along the outer circumference of the magnetic conductive member, the two sub-magnets are formed with two mounting grooves, the number of the mass block is one, and the mass block is arranged in one of the mounting grooves.
  • the limiting member includes a limiting block and a buffer member, and the buffer member is arranged on a contact surface of the limiting block for contacting with the eccentric wheel.
  • the present invention further provides an electronic device, comprising a housing and the vibration motor assembly as described above and arranged in the housing.
  • the vibration motor assembly includes a first motor group and a second motor group, each of the first motor group and the second motor group includes two vibration motors, and the four vibration motors are arranged along the same plane.
  • Each vibration motor includes a stator, an eccentric mover and a limiter.
  • the stator includes a coil assembly, and the coil assembly forms a cavity;
  • the eccentric mover includes a rotating shaft and an eccentric wheel mounted on the rotating shaft, and the eccentric wheel includes a magnetic assembly.
  • the eccentric wheel is arranged in the cavity and can rotate in the cavity; the centers of the rotating shafts of the four vibration motors are respectively located at the four vertices of a quadrilateral; the limiter is used to limit the rotation angle of the eccentric wheel.
  • the invention arranges four vibration motors in the horizontal direction, and the four vibration motors are divided into two groups, each group includes two vibration motors. Since the vibration motor includes an eccentric mover, and the eccentric mover includes an eccentric wheel, the center of mass of the eccentric mover is not Not at the center of the rotating shaft, the first motor group and the second motor group are controlled separately to produce asymmetric rotation, that is, anisotropic rotation.
  • FIG1 is a schematic structural diagram of a vibration motor assembly according to an embodiment of the present invention.
  • FIG2 is a schematic structural diagram of a vibration motor assembly according to an embodiment of the present invention (with the coil assembly hidden);
  • FIG3 is a schematic structural diagram of a vibration motor according to an embodiment of the present invention.
  • FIG4 is a schematic diagram of a first motor group of a vibration motor assembly rotating to brake according to an embodiment of the present invention
  • FIG5 is a schematic diagram of the force of the vibration motor assembly in the state of FIG4;
  • FIG. 6 is a schematic diagram of a first motor group of a vibration motor assembly according to an embodiment of the present invention rotating in the reverse direction to brake;
  • FIG7 is a schematic diagram of the force of the vibration motor assembly in the state of FIG6;
  • FIG8 is a schematic diagram of a second motor group of a vibration motor assembly rotating to brake according to an embodiment of the present invention.
  • FIG9 is a schematic diagram of the force of the vibration motor assembly in the state of FIG8;
  • FIG. 10 is a schematic diagram of a second motor group of a vibration motor assembly according to an embodiment of the present invention rotating in the reverse direction to brake;
  • FIG11 is a schematic diagram of the force of the vibration motor assembly in the state of FIG10;
  • FIG12 is a schematic diagram of an exploded structure of a vibration motor according to an embodiment of the present invention.
  • FIG. 13 is a schematic structural diagram of a stator and an eccentric mover of a vibration motor according to an embodiment of the present invention
  • FIG. 14 is a schematic structural diagram of a magnetic conductive ring and an eccentric mover of a vibration motor according to an embodiment of the present invention
  • FIG. 15 is a schematic structural diagram of an eccentric mover of a vibration motor according to an embodiment of the present invention.
  • 16 is another structural schematic diagram of the stator and the eccentric mover of the vibration motor according to an embodiment of the present invention.
  • FIG. 17 is a schematic cross-sectional view of the vibration motor according to an embodiment of the present invention.
  • vibration motor assembly 110, first motor group; 120, second motor group; 10, vibration motor; 101, first motor; 102, second motor; 103, third motor; 104, fourth motor; 1, eccentric mover; 11, eccentric wheel; 112, magnetic assembly; 1121, permanent magnet; 11211, sub-magnet; 1122, mass block; 1123, magnetic conductive part; 113, notch; 12, rotating shaft; 2, stator; 21, coil; 22, magnetic conductive ring; 3, upper shell; 31, upper through hole; 4, lower shell; 41, lower through hole; 5, limiter.
  • a vibration motor assembly 100 comprising a first motor group 110 and a second motor group 120, wherein the first motor group 110 and the second motor group 120 each comprise two vibration motors 10, wherein the four vibration motors 10 are arranged along the same plane, wherein each vibration motor 10 comprises a stator 2, an eccentric mover 1 and a stopper 5, wherein the stator 2 comprises a coil 21 assembly, wherein the coil 21 assembly is formed with a cavity; wherein the eccentric mover 1 comprises a rotating shaft 12 and an eccentric wheel 11, wherein the eccentric wheel 11 is formed with a notch 113, wherein the eccentric wheel 11 comprises an eccentric wheel 11 fitted on the rotating shaft 12, and wherein the eccentric wheel 11 comprises an eccentric wheel 11 fitted on the rotating shaft 12.
  • an eccentric wheel 11 is arranged in the cavity and can rotate in the cavity; the centers of the rotating shafts 12 of the four vibration motors 10 are respectively located on the four vertices of the quadrilateral; and the limiting member 5 is used to limit the rotation angle of the eccentric wheel 11 .
  • the vibration motor 10 first magnetizes the magnetic component 112, and then energizes the coil 21 component.
  • the eccentric wheel includes the magnetic component 112.
  • the coil 21 will apply a torque to the eccentric wheel 11, drive the eccentric wheel 11 and then rotate the eccentric mover 1.
  • the eccentric mover 1 includes a rotating shaft 12 and an eccentric wheel 11 mounted on the rotating shaft 12.
  • the eccentric wheel 11 includes the magnetic component 112. After the coil 21 is energized, the eccentric wheel 11 will rotate due to the torque.
  • the eccentric mover 1 can be in various forms: for example, the eccentric wheel 11 is a circular disk with uniform mass, but the central axis of the rotating shaft 12 is offset from the center of the eccentric wheel 11; or the rotation center of the eccentric wheel 11 is the axis of the rotating shaft 12, but the eccentric wheel 11 is not a circular disk with uniform mass distribution, such as an elliptical disk. In short, the center of mass and the center of rotation of the eccentric wheel 11 are not at the same point.
  • This embodiment sets four vibration motors 10 in horizontal directions.
  • the four vibration motors 10 are divided into two groups, each group includes two vibration motors 10. Since the vibration motor 10 includes an eccentric mover 1, and the eccentric mover 1 includes an eccentric wheel 11, the center of mass of the eccentric mover 1 is not at the center of the rotating shaft 12.
  • the first motor group 110 and the second motor group 120 are controlled separately, which can produce asymmetric rotation, that is, anisotropic rotation.
  • the eccentric mover 1 since the eccentric mover 1 is an eccentric structure, it will have a sense of vibration when rotating. Compared with the prior art that requires an additional eccentric block to be added to the rotating shaft 12, this embodiment can produce a sense of vibration by improving the structure of the eccentric wheel 11, which is beneficial to increasing the motor speed and reducing energy consumption.
  • the eccentric wheel 11 is formed with a notch 113, and a limiting member 5 is provided at the notch.
  • the notch 113 can be a fan-shaped notch.
  • an eccentric wheel 11 with an irregular structure is obtained, so that the center of mass of the eccentric wheel 11 does not coincide with its rotation center, and a vibration can be generated during rotation.
  • the mass of the eccentric wheel 11 can be reduced, which is beneficial to further increase the rotation speed of the motor 100 and reduce energy consumption.
  • the two sides of the notch 113 stop rotating after hitting the limiting member 5, thereby limiting the rotation angle of the eccentric wheel 11.
  • the stator 2 includes a magnetic ring 22, and the coil assembly is disposed in the magnetic ring 22.
  • the magnetic ring 22 is also called a magnetic yoke, which is made of stacked silicon steel sheets and is evenly and symmetrically arranged around the coil assembly to restrict leakage magnetic flux from spreading outward.
  • the eccentric wheel 11 rotates in an angle range of 0° to 90°; in the first motor group 110, the two vibration motors 10 rotate in the same direction, and the two vibration motors 10 collide with the two corresponding limit members 5 at the same time; in the second motor group 120, the two vibration motors 10 rotate in the same direction, and the two vibration motors 10 collide with the two corresponding limit members 5 at the same time.
  • the eccentric wheel 11 rotates in an angle range of 0° to 90°. Every time the eccentric wheel 11 rotates 90°, it collides with the limit member 5 and then rotates in the opposite direction.
  • the two limit members 5 are centrally symmetrical about the midpoint of the center line connecting the two rotating shafts 12; in the second motor group 120, the two limit members 5 are centrally symmetrical about the midpoint of the center line connecting the two rotating shafts 12 of the two vibration motors 10 of the second motor group 120.
  • the same rotation direction means that the two vibration motors 10 rotate clockwise or counterclockwise at the same time.
  • State 1 counterclockwise rotation state, the process of the first motor group 110 moving from the state shown in FIG. 2 to the state shown in FIG. 4, the state shown in FIG. 2 is regarded as the initial state of the vibration motor assembly 100, the first motor group 110 moves from the state shown in FIG. 2 to the state shown in FIG. 4, referring to FIG. 2, the two motors on the left of FIG. 2 are the first motor group 110, and the two motors on the right are the second motor group 120, and the first motor group 110 and the second motor group 120 can be controlled separately. Assuming that the position in FIG. 2 is the initial position, the two vibration motors 10 of the first motor group 110 are controlled to rotate counterclockwise at the same time.
  • the second motor group 120 moves from the state shown in FIG. 2 to the state shown in FIG. 8.
  • the state shown in FIG. 2 is regarded as the initial state of the vibration motor assembly 100.
  • the second motor group 120 moves from the state shown in FIG. 2 to the state shown in FIG. 8.
  • the two motors on the left of FIG. 2 are the first motor group 110
  • the two motors on the right are the second motor group 120.
  • the first motor group 110 and the second motor group 120 can be controlled separately. Assume that the position of the second motor group 120 on the right in FIG. 2 is the initial state.
  • the vibration motor 10 includes an eccentric mover 1
  • the eccentric mover 1 includes an eccentric wheel 11
  • the center of mass of the eccentric mover 1 is not at the center of the rotating shaft 12
  • the first motor group 110 and the second motor group 120 are controlled separately, and asymmetric rotation, that is, anisotropic rotation, can be generated.
  • the stopper 5 is an arc segment
  • the notch 113 is a fan-shaped notch 113
  • the center of the stopper 5, the center of the fan-shaped notch 113, and the center of the rotating shaft 12 are concentrically arranged, and the difference between the first center angle corresponding to the fan-shaped notch 113 and the second center angle corresponding to the stopper 5 is 90°.
  • the stopper 5 is an arc segment, the center of the circle corresponding to the arc, the center of the circle corresponding to the fan-shaped notch 113 and the center of the rotating shaft 12 coincide, the first center angle corresponding to the fan-shaped notch 113 is shown as a in Fig. 3, the second center angle corresponding to the stopper 5 is shown as b in Fig. 3, and the difference between a-b is 90°, so that the eccentric wheel 11 can only rotate within the range of 0° to 90°.
  • the quadrilateral is a square.
  • the four vibration motors 10 are respectively located at the four vertices of the square, that is, the vibration motors 10 are distributed in a 2*2 array.
  • Such a symmetrical design can effectively offset the components of unnecessary forces when the vibration motors 10 of the first motor group 110 and the second motor group 120 rotate.
  • the two vibration motors 10 of the first motor group 110 are respectively the first motor 101 and the second motor 102
  • the two vibration motors 10 of the second motor group 120 are respectively the third motor 103 and the fourth motor 104
  • the first motor 101 and the third motor 103 are arranged adjacent to each other
  • the second motor 102 and the fourth motor 104 are arranged adjacent to each other
  • the perpendicular midline of the line connecting the center of the rotating shaft of the first motor and the rotating shaft of the third motor is taken as the symmetry line
  • the stoppers in the first motor group and the second motor group are arranged symmetrically.
  • the first motor 101 and the third motor 103 can be controlled to be driven in reverse at the same time, or the second motor 102 and the fourth motor 104 can be driven in reverse at the same time, so as to generate asymmetric vibration.
  • the magnetic assembly 112 may only include a magnetic member 1123 and a permanent magnet 1121, wherein the magnetic member 1123 is mounted on the rotating shaft 12, and the permanent magnets 1121 are unevenly distributed along the periphery of the magnetic member 1123.
  • the periphery of the magnetic member 1123 refers to a whole circumference around the magnetic member 1123, and the uneven distribution of the permanent magnets 1121 on the periphery of the magnetic member 1123 includes two meanings: first, the number of permanent magnets 1121 is one, and one permanent magnet 1121 is not a complete circle, so the mass distribution of the eccentric wheel 11 is uneven, and the rotation center of the eccentric wheel 11 does not coincide with the center of mass of the eccentric wheel 11.
  • the permanent magnet 1121 includes a plurality of sub-magnets 11211, which are arranged at intervals on the periphery of the magnetic member 1123, and the plurality of sub-magnets 11211 are unevenly distributed along the periphery of the magnetic member 1123.
  • the sub-magnets 11211 have the same size and mass, if the sub-magnets 11211 are evenly spaced along the periphery of the magnetic conductive member 1123, the rotation center of the eccentric wheel 11 will coincide with the mass center of the eccentric wheel 11, and a good vibration effect cannot be generated. Therefore, multiple sub-magnets 11211 are unevenly distributed along the periphery of the magnetic conductive member 1123.
  • each block magnet 11211 may be different. In this case, even if each block magnet 11211 is evenly spaced, the rotation center of the eccentric wheel 11 and the mass center of the eccentric wheel 11 may not coincide, and the eccentric mover 1 may also generate vibration when rotating.
  • the magnetic conductive member 1123 can be formed by stacking iron sheets or silicon steel sheets, which can play a connecting and magnetic conductive role.
  • the coil 21 assembly can include a frame and a coil 21 wound on the frame, the frame is installed on the magnetic conductive ring 22 to provide support for the winding of the coil 21, and the frame forms a cavity for the eccentric wheel 11 to rotate.
  • the frame is installed on the magnetic conductive ring 22 to provide support for the winding of the coil 21, and the frame forms a cavity for the eccentric wheel 11 to rotate.
  • the number of coil 21 assemblies can be two, and the two coil 21 assemblies are arranged at intervals, and the rotating shaft 12 passes through the gap between the two coils 21 and can rotate freely.
  • the magnetic assembly 112 may include a magnetic member 1123, a permanent magnet 1121 and a mass block 1122, the magnetic member 1123 is mounted on the shaft 12, the permanent magnet 1121 and the mass block 1122 is arranged on the periphery of the magnetic conductive member 1123.
  • the mass block 1122 is generally made of a material with a relatively high density, such as lead or tungsten alloy. The density of the mass block 1122 is much greater than that of the permanent magnet 1121. When the size is set, the mass of the mass block 1122 is also set to be larger than that of the permanent magnet 1121. By setting the mass block 1122, the vibration can be increased.
  • the permanent magnet 1121 includes a plurality of sub-magnets 11211, and the plurality of sub-magnets 11211 are evenly spaced along the periphery of the magnetic conductive member 1123.
  • An installation slot capable of accommodating a mass block 1122 is formed between two adjacent sub-magnets 11211.
  • the number of the installation slots is multiple, and the mass blocks 1122 are unevenly distributed in the multiple installation slots.
  • the multiple sub-magnets 11211 are evenly spaced to make the torque in all directions of the eccentric wheel 11 uniform.
  • Installation slots are formed between adjacent sub-magnets 11211.
  • the number of the installation slots is the same as the number of sub-magnets 11211.
  • the number of mass blocks 1122 may be one or more.
  • the number of sub-magnets 11211 is two
  • the number of mass blocks 1122 is one
  • the mass block 1122 is arranged in two sub-magnets 11211 to form two mounting grooves
  • the mass block 1122 is arranged in one of the mounting grooves formed by the two sub-magnets 11211.
  • the two sub-magnets 11211 are spaced apart to form two mounting grooves
  • the number of mass blocks 1122 is one
  • the mass block 1122 is only installed in one of the mounting grooves, thereby making the mass distribution of the eccentric wheel 11 uneven
  • the center of mass of the eccentric wheel 11 does not coincide with the rotation center of the eccentric wheel 11, forming an eccentric structure, which can produce a sense of vibration.
  • This embodiment achieves an ideal sense of vibration effect with a minimum number of sub-magnets 11211 and mass blocks 1122, and is simple to manufacture and easy to install. It should be noted here that one of the two mounting grooves where the mass block 1122 is not provided is the notch 113 of the eccentric wheel 11 mentioned above. In a specific embodiment, two sides of the mass block 1122 are respectively in contact with the two sub-magnets 11211 , and the connection strength between the mass block 1122 and the two sub-magnets 11211 is higher.
  • the vibration motor assembly 100 further includes a limiter 5, which is disposed at the notch 113 to limit the rotation angle of the eccentric wheel 11.
  • the limiter 5 allows the vibration motor assembly 100 to swing only within a limited angle, thus becoming a swing motor.
  • the number of the limiter 5 may be one or two, and the two limiters 5 may be disposed at intervals to limit the eccentric wheel 11 from both sides of the notch 113, respectively.
  • the limiting member 5 includes a limiting block and a buffer member, and the buffer member is arranged on the limiting block.
  • the limit block can be made of metal material to improve strength and support, and the buffer is used to reduce noise and buffer impact force.
  • the buffer is a rubber layer or a foam layer.
  • the buffer can be made of foam or rubber material.
  • FIG. 12 shows a schematic diagram in which each vibration motor 10 includes an upper shell 3 and a lower shell 4.
  • the vibration motor 10 further includes an upper shell 3 and a lower shell 4, the upper shell 3 covers the top surface of the magnetic ring 22, the lower shell 4 covers the bottom surface of the magnetic ring 22, the upper shell 3 is formed with an upper through hole 31 for installing the limiter 5, and the lower shell 4 is formed with a lower through hole 41 for installing the limiter 5.
  • the upper through hole 31 and the lower through hole 41 are arranged opposite to each other, and the limiter 5 can be installed on the upper through hole 31 and the lower through hole 41 by snapping.
  • the limiter 5 can also be installed on the magnetic ring 22.
  • four vibration motors 10 can also be arranged together in the accommodating cavity formed by the upper shell 3 body and the lower shell 4 body through an upper shell 3 body and a lower shell 4 body.
  • the vibration motor assembly 100 includes a stator 2 and an eccentric mover 1, the stator 2 includes a magnetic ring 22 and two coils 21 arranged in the magnetic ring 22, the eccentric mover 1 includes a rotating shaft 12 and an eccentric wheel 11, the eccentric wheel 11 includes a magnetic member 1123 and a permanent magnet 1121 sleeved on the rotating shaft 12, the permanent magnet 1121 includes two sub-magnets 11211 uniformly and symmetrically arranged on the outer periphery of the magnetic member 1123, a mass block 1122 is arranged in one of the mounting grooves formed by the two sub-permanent magnets 1121, and the other mounting groove forms a notch 113 of the eccentric wheel 11.
  • the two sub-magnets 11211 can be magnetized.
  • the magnetization direction of the two sub-magnets 11211 is consistent.
  • horizontal left magnetization is adopted.
  • the coil 21 is energized in the direction shown in Figure 17, where "*" indicates that the current direction is perpendicular to the paper surface and inward, and ".” indicates that the current direction is perpendicular to the paper surface and outward.
  • the eccentric mover 1 can generate a clockwise torque, that is, the eccentric mover 1 will rotate clockwise.
  • the vibration motor assembly 100 can rotate continuously around the axis; the device can be used to convert electrical energy into rotational mechanical energy.
  • the structure is simple. Since the eccentric mover 1 is an eccentric structure, it has a sense of vibration when rotating.
  • the present invention further provides an electronic device, the electronic device comprising a housing and a vibration motor assembly 100 as described above disposed in the housing. Since the electronic device comprises all technical solutions of all embodiments of the vibration motor assembly 100 described above, it has all the beneficial effects brought by all the technical solutions described above, which are not described one by one here.
  • the electronic device described above may be a mobile phone or a game controller, etc.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

本发明提供一种振动电机组件及电子设备，振动电机组件包括第一电机组和第二电机组，第一电机组和第二电机组均包括两个振动电机，四个振动电机沿同一平面设置，各振动电机包括定子、偏心动子和限位件，定子包括线圈组件，线圈组件形成有空腔；偏心动子包括转轴和套装于转轴的偏心轮，偏心轮包括磁性组件，偏心轮设置于空腔内且能够在空腔内转动；限位件用以限制偏心轮的转动角度。该振动电机组件第一电机组和第二电机组分别控制，可以产生非对称旋转，也即异向性旋转。

Description

振动电机组件及电子设备 技术领域
本发明涉及振动电机组件技术领域，尤其涉及一种振动电机组件及电子设备。
背景技术
振动电机广泛存在于各行各业，是一种把电能转换成机械能的一种装置，现有的振动电机大多为线性电机动子，在平衡位置附近往复运动时产生的旋转为对称性旋转，不能产生非对称性旋转(异向性旋转)。
鉴于此，有必要提供一种新的振动电机组件及电子设备，以解决或至少缓解上述技术缺陷。
发明内容
本发明的主要目的是提供一种振动电机组件及电子设备，旨在解决现有技术中的电机无法提供异向性旋转的技术问题。
为实现上述目的，根据本发明的一个方面，本发明提供一种振动电机组件，包括第一电机组和第二电机组，所述第一电机组和所述第二电机组均包括两个振动电机，四个所述振动电机沿同一平面设置，各所述振动电机包括：
定子，所述定子包括线圈组件，所述线圈组件形成有空腔；
偏心动子，所述偏心动子包括转轴和套装于所述转轴的偏心轮，所述偏心轮包括磁性组件，所述偏心轮设置于所述空腔内且能够在所述空腔内转动；四个所述振动电机的所述转轴的中心分别位于四边形的四个顶点上；
限位件，所述限位件用以限制所述偏心轮的转动角度。
在一实施例中，所述偏心轮形成有缺口，所述限位件设置于所述缺口处。
在一实施例中，所述限位件为圆弧段，所述缺口为扇形缺口，所述限位件的圆心、所述扇形缺口的圆心、所述转轴的中心同心设置，所述扇形缺口对应的第一圆心角与所述限位件对应的第二圆心角的差值为90°。
在一实施例中，所述偏心轮旋转的角度范围为0°～90°；所述第一电机组 中，两个所述振动电机的旋转方向相同，且两个所述振动电机与分别对应的两个所述限位件同时碰撞；所述第二电机组中，两个所述振动电机的旋转方向相同，且两个所述振动电机与分别对应的两个所述限位件同时碰撞。
在一实施例中，所述第一电机组中，两个所述限位件关于两个所述转轴的中心连线的中点成中心对称；所述第二电机组中，两个所述限位件关于所述第二电机组的两个所述振动电机的两个所述转轴的中心连线的中点成中心对称。
在一实施例中，所述第一电机组的两个所述振动电机分别为第一电机和第二电机，所述第二电机组的两个所述振动电机分别为第三电机和第四电机，所述第一电机和所述第三电机相邻设置，所述第二电机和所述第四电机相邻设置；以所述第一电机的转轴和所述第三电机的转轴的中心的连线的中垂线为对称线，所述第一电机组和所述第二电机组中的所述限位件呈对称设置。
在一实施例中，所述磁性组件包括导磁件、永磁铁和质量块，所述导磁件套装于所述转轴上，所述永磁铁和所述质量块设置于所述导磁件的外周。
在一实施例中，永磁铁包括两块子磁铁，两块所述子磁铁沿所述导磁件的外周间隔均匀分布，两块所述子磁铁形成有两个安装槽，所述质量块的数量为一块，所述质量块设置于其中一个所述安装槽中。
在一实施例中，所述限位件包括限位块和缓冲件，所述缓冲件设置于所述限位块用于与所述偏心轮抵接的抵接面上。
根据本发明的另一方面，本发明还提供一种电子设备，所述电子设备包括外壳和设置于所述外壳内的如上述所述的振动电机组件。
上述方案中，振动电机组件包括第一电机组和第二电机组，第一电机组和第二电机组均包括两个振动电机，四个振动电机沿同一平面设置，各振动电机包括定子、偏心动子和限位件，定子包括线圈组件，线圈组件形成有空腔；偏心动子包括转轴和套装于转轴的偏心轮，偏心轮包括磁性组件，偏心轮设置于空腔内且能够在空腔内转动；四个振动电机的转轴的中心分别位于四边形的四个顶点上；限位件用以限制偏心轮的转动角度。该发明通过设置四个水平方向的振动电机，四个振动电机分为两组，每一组包括两个振动电机，由于振动电机包括偏心动子，偏心动子包括偏心轮，偏心动子的质心并 不在转轴的中心上，第一电机组和第二电机组分别控制，可以产生非对称旋转，也即异向性旋转。
附图说明
为了更清楚地说明本发明实施方式或现有技术中的技术方案，下面将对实施方式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方式，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为本发明实施例振动电机组件的结构示意图；
图2为本发明实施例振动电机组件的结构示意图(隐藏线圈组件)；
图3为本发明实施例振动电机的结构示意图；
图4为本发明实施例振动电机组件的第一电机组旋转到制动的一示意图；
图5为图4状态下振动电机组件的受力示意图；
图6为本发明实施例振动电机组件的第一电机组反向旋转到制动的一示意图；
图7为图6状态下振动电机组件的受力示意图；
图8为本发明实施例振动电机组件的第二电机组旋转到制动的一示意图；
图9为图8状态下振动电机组件的受力示意图；
图10为本发明实施例振动电机组件的第二电机组反向旋转到制动的一示意图；
图11为图10状态下振动电机组件的受力示意图；
图12为本发明实施例振动电机的爆炸结构示意图；
图13为本发明实施例振动电机的定子和偏心动子的一结构示意图；
图14为本发明实施例振动电机的导磁环和偏心动子的结构示意图；
图15为本发明实施例振动电机的偏心动子的结构示意图；
图16为本发明实施例振动电机的定子和偏心动子的另一结构示意图；
图17为本发明实施例振动电机的剖面结构示意图。
标号说明：
100、振动电机组件；110、第一电机组；120、第二电机组；10、振动电机；101、第一电机；102、第二电机；103、第三电机；104、第四电机；1、偏心动子；11、偏心轮；112、磁性组件；1121、永磁铁；11211、子磁铁；1122、质量块；1123、导磁件；113、缺口；12、转轴；2、定子；21、线圈；22、导磁环；3、上壳；31、上通孔；4、下壳；41、下通孔；5、限位件。
本发明目的的实现、功能特点及优点将结合实施方式，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方式中的附图，对本发明实施方式中的技术方案进行清楚、完整地描述，显然，所描述的实施方式仅仅是本发明的一部分实施方式，而不是全部的实施方式。基于本发明中的实施方式，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方式，都属于本发明保护的范围。
需要说明，本发明实施方式中所有方向性指示(诸如上、下……)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，在本发明中如涉及“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。
并且，本发明各个实施方式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。
参照图1、图2，图13～图15，根据本发明的一个方面，本发明提供一种振动电机组件100，包括第一电机组110和第二电机组120，第一电机组110和第二电机组120均包括两个振动电机10，四个振动电机10沿同一平面设置，各振动电机10包括定子2、偏心动子1和限位件5，定子2包括线圈21组件，线圈21组件形成有空腔；偏心动子1包括转轴12和偏心轮11，偏心轮11形成有缺口113，偏心轮11包括转轴12套装于转轴12的偏心轮11，偏心轮11 包括磁性组件112，偏心轮11设置于空腔内且能够在空腔内转动；四个振动电机10的转轴12的中心分别位于四边形的四个顶点上；限位件5用以限制偏心轮11的转动角度。
振动电机10是先给磁性组件112充磁，然后给线圈21组件通电，偏心轮包括磁性组件112，线圈21会给偏心轮11施加一个扭矩，驱动偏心轮11进而使得偏心动子1转动。偏心动子1包括转轴12和套装于转轴12的偏心轮11，偏心轮11包括磁性组件112，线圈21通电后偏心轮11会受到扭矩而转动。偏心动子1的形式可以有多种：如偏心轮11是质量均匀的圆盘，但转轴12的中心轴线与偏心轮11的中心偏离设置；或者偏心轮11的转动中心就是转轴12的轴线，但偏心轮11不是质量分布均匀的圆盘，如为椭圆形盘，总之偏心轮11的质心与转动中心并不在同一点上。该实施例通过设置四个水平方向的振动电机10，四个振动电机10分为两组，每一组包括两个振动电机10，由于振动电机10包括偏心动子1，偏心动子1包括偏心轮11，偏心动子1的质心并不在转轴12的中心上，第一电机组110和第二电机组120分别单独控制，可以产生非对称旋转，也即异向性旋转。并且，由于偏心动子1是偏心结构，因此在转动时会自带震感。相比于现有技术中要在转轴12上额外增加偏心块而言，该实施例通过偏心轮11结构的改进即可产生震感，有利于电机转速的提高和减少能源消耗。
参照图3，在一实施例中，偏心轮11形成有缺口113，在缺口处设置有限位件5。具体地，缺口113可以是一个扇形缺口，通过在偏心轮11上设置一缺口113，获得非规则结构的偏心轮11，使得偏心轮11的质心与其旋转中心不重合，在转动时可以产生震感。并且还能够减少偏心轮11的质量，有利于进一步提高电机100的转速和减少能耗。同时，缺口113的两侧边碰到限位件5后就停止转动，以此限定偏心轮11的转动角度。
参照图13，在一实施例中，定子2包括导磁环22，线圈组件设置于导磁环22内。导磁环22又称为磁轭，是由硅钢片垒叠制成的轭铁，它均匀对称地分面在线圈组件的四周，用于约束漏磁向外扩散。
参照图4、图6，图8和图10，在一实施例中，偏心轮11旋转的角度范围为0°～90°；第一电机组110中，两个振动电机10的旋转方向相同，且两个振动电机10与分别对应的两个限位件5同时碰撞；第二电机组120中，两个振动电机10的旋转方向相同，且两个振动电机10与分别对应的两个限位 件5同时碰撞。偏心轮11旋转的角度范围为0°～90°，偏心轮11每旋转90°则与限位件5碰撞，并随后反方向转动。在一具体地实施例中，第一电机组110中，两个限位件5关于两个转轴12的中心连线的中点成中心对称；第二电机组120中，两个限位件5关于第二电机组120的两个振动电机10的两个转轴12的中心连线的中点成中心对称。旋转方向相同指两个振动电机10同时顺时针旋转或同时逆时针旋转。通过驱动不同的电机组进行不同旋转方向的运动，该振动电机组件100至少有四个运动状态：
状态一，逆时针旋转状态，第一电机组110由图2所示状态运动到图4所述状态的过程，将图2所示状态视为振动电机组件100的初始状态，第一电机组110由图2所述状态运动至图4所示状态，参照图2，图2左边两个电机为第一电机组110，右边两个电机为第二电机组120，第一电机组110和第二电机组120能够分别控制。假设图2中位置为初始位置，控制第一电机组110的两个振动电机10同时逆时针旋转，转动过程中，振动电机10转动过程中产生的y向分力相互抵消，只留x向分量，产生逆时针旋转的感觉，直至运动到图4所示位置；参照图4和图5，运动至图4位置时偏心轮11与限位件5碰撞时，离心力消失，只剩下制动力F1和F2，F1和F2不共线，力的作用点不同，产生逆时针旋转的感觉。
状态二，无旋转感状态，第一电机组110由图4所述状态运动至图6所示状态的过程，当第一电机组110的两个振动电机10碰到限位件5后，驱动第一电机组110的两个振动电机10反向旋转，即顺时针转动，此时，参照图7，转动过程中，两个振动电机10转动过程中产生的x向分力相互抵消，y向分力也相互抵消，无旋转及平动的感觉，直至运动到图6所示位置；参照图6和图7，运动至图6位置时偏心轮11与限位件5碰撞时，离心力消失，只剩下制动力F1和F2，F1和F2大小相等方向相反相互抵消，无旋转及平动感觉。
状态三，顺时针旋转状态，第二电机组120由图2所示状态运动到图8所述状态的过程，将图2所示状态视为振动电机组件100的初始状态，第二电机组120由图2所述状态运动至图8所示状态，参照图2，图2左边两个电机为第一电机组110，右边两个电机为第二电机组120，第一电机组110和第二电机组120能够分别控制。假设图2中右边的第二电机组120的位置为初 始位置，控制第二电机组120的两个振动电机10同时顺时针旋转，参照图9，转动过程中，两个振动电机10转动过程中产生的y向分力相互抵消，只留x向分量，产生顺时针旋转的感觉，直至运动到图8所示位置；参照图8和图9，运动至图8位置时偏心轮11与限位件5碰撞时，离心力消失，只剩下制动力F3和F4，F3和F4不共线，力的作用点不同，产生顺时针旋转的感觉。
状态四，无旋转感状态，第一电机组110由图8所述状态运动至图10所示状态的过程，当第二电机组120的两个振动电机10碰到限位件5后，驱动第二电机组120的两个振动电机10反向旋转，即逆时针转动，参照图11，此时，两个振动电机10转动过程中产生的x向分力相互抵消，y向分力也相互抵消，无旋转及平动的感觉。参照图10和图11，运动至图10位置时偏心轮11与限位件5碰撞时，离心力消失，只剩下制动力F3和F4，F3和F4大小相等方向相反相互抵消，无旋转及平动感觉。
总之，如果仅逆时针驱动左侧的第一电机组110的两个振动电机10旋转，可产生逆时针旋转的感觉，反向驱动左侧的第一电机组110的两个振动电机10则无旋转及平动感觉；只顺时针驱动右侧的第二电机组120的两个振动电机10，可产生顺时针旋转的感觉，反向驱动右侧的第二电机组120的两个振动电机10则无旋转及平动感觉。由于振动电机10包括偏心动子1，偏心动子1包括偏心轮11，偏心动子1的质心并不在转轴12的中心上，第一电机组110和第二电机组120分别控制，可以产生非对称旋转，也即异向性旋转。
参照图3，在一实施例中，限位件5为圆弧段，缺口113为扇形缺口113，限位件5的圆心、扇形缺口113的圆心、转轴12的中心同心设置，扇形缺口113对应的第一圆心角与限位件5对应的第二圆心角的差值为90°。限位件5是一段圆弧段，圆弧对应的圆的圆心，扇形缺口113对应的圆的圆心和转轴12的中心重合，扇形缺口113对应的第一圆心角为图3中a所示，限位件5对应的第二圆心角如图3中b所示，a-b差值为90°，使得偏心轮11只能在0°～90°的范围内转动。
在一实施例中，四边形为正方形。四个振动电机10分别位于正方形的四个顶点上，即振动电机10呈现出2*2的阵列分布。这样的对称设计，可以有效抵消第一电机组110和第二电机组120的振动电机10转动时将不需要的力的分量相互抵消。
在一实施例中，第一电机组110的两个振动电机10分别为第一电机101和第二电机102，第二电机组120的两个振动电机10分别为第三电机103和第四电机104，第一电机101和第三电机103相邻设置，第二电机102和第四电机104相邻设置；以第一电机的转轴和第三电机的转轴的中心的连线的中垂线为对称线，第一电机组和第二电机组中的限位件呈对称设置。如此设计，还可以控制同时反向驱动第一电机101和第三电机103，或者同时反向驱动第二电机102和第四电机104，能够产生非对称性振动。
在一实施例中，磁性组件112可以仅包括导磁件1123和永磁铁1121，导磁件1123套装于转轴12上，永磁铁1121沿导磁件1123的外周非均匀分布。导磁件1123的外周指的是围绕导磁件1123的一整个圆周，永磁铁1121在导磁件1123的外周非均匀分布包括两个含义：第一，永磁铁1121的数量为一块，一块永磁铁1121并不是一个完成的圆，因此使得偏心轮11的质量分布不均匀，偏心轮11的转动中心与偏心轮11的质心不重合。第二，永磁铁1121包括多块子磁铁11211，多块子磁铁11211间隔设置于导磁件1123外周，多块子磁铁11211沿导磁件1123的外周非均匀分布。当子磁铁11211大小质量相同时，如果子磁铁11211沿导磁件1123的外周间隔均匀分布，那么偏心轮11的转动中心会与偏心轮11的质心重合，无法产生效果较好的震感。因此，要将多块子磁铁11211沿导磁件1123的外周非均匀分布。
当然，在另一实施例中，各块子磁铁11211铁的质量和大小也可以不相同。此时，即使各块子磁铁11211间隔均匀分布，也会造成偏心轮11的转动中心与偏心轮11的质心不重合，偏心动子1转动时同样会产生震感。
需要说明的是，导磁件1123可以由铁片或硅钢片叠设形成，可以起到连接和导磁作用。线圈21组件可以包括圈架和饶设在圈架上的线圈21，圈架安装于导磁环22上为线圈21绕设提供支撑，圈架形成有供偏心轮11转动的空腔。当然，也可以仅不设置圈架，采用漆包线在模具上绕成线圈21，再用高温胶进行定型形成线圈21，线圈21内形成有供偏心轮11转动的空腔。线圈21组件的数量可以为两个，两个线圈21组件间隔设置，转轴12穿过两个线圈21之间的间隙并可以自由转动。
参照图15，在一实施例中，磁性组件112可以包括导磁件1123、永磁铁1121和质量块1122，导磁件1123套装于转轴12上，永磁铁1121和质量块 1122设置于导磁件1123外周的。质量块1122一般采用密度较大的材料制成，如铅或者钨合金。质量块1122的密度比永磁铁1121的密度大的多，设置大小时也会将质量块1122的质量设置的比永磁铁1121大一些，通过设置质量块1122可以增加震感。
在一实施例中，永磁铁1121包括多块子磁铁11211，多块子磁铁11211沿导磁件1123的外周间隔均匀分布，相邻两块子磁铁11211之间形成有能够容纳质量块1122的安装槽，安装槽的数量为多个，质量块1122在多个安装槽内非均匀分布。这里将多块子磁铁11211间隔均匀分布是为了使得偏心轮11各个方向受到扭矩均匀，在相邻的子磁铁11211之间形成安装槽，安装槽的数量与子磁铁11211的数量相同，质量块1122的数量可能是一块，也可能是多块，每一安装槽中最多设置一块质量块1122，质量块1122在多个安装槽中非均匀分布，因为如果均匀分布会导致偏心轮11质心在自身转动中心上，无法产生效果较好的震感。
参照图13-图15，在一实施例中，子磁铁11211的数量为两块，质量块1122的数量为一块，质量块1122设置于两块子磁铁11211形成有两个安装槽，质量块1122设置于两块子磁铁11211形成的其中一个安装槽中。两块子磁铁11211间隔分布形成有两个安装槽，质量块1122的数量为一块，质量块1122仅安装在其中一个安装槽中，由此使得偏心轮11的质量分布不均匀，偏心轮11的质心与偏心轮11的转动中心不重合，构成偏心结构，能够产生震感。该实施例以最小数量的子磁铁11211和质量块1122数量达到理想的震感效果，制作简单，安装方便。这里需要说明的是，两个安装槽中未设置质量块1122的一个安装槽也就是上述的偏心轮11的缺口113。在一具体地实施例中，质量块1122的两侧分别与两块子磁铁11211抵接，将质量块1122与两块子磁铁11211抵接连接强度更高。
参照图16，在一实施例中，振动电机组件100还包括限位件5，限位件5设置于缺口113处以限制偏心轮11的转动角度。限位件5使得振动电机组件100只能在限定的角度内摆动，成为摆动电机。限位件5的数量可以为一个，也可以为两个，两个限位件5时可以间隔设置，以分别从缺口113的两侧边对偏心轮11进行限位。
在一实施例中，限位件5包括限位块和缓冲件，缓冲件设置于限位块用 于与偏心轮11抵接的抵接面上。限位块可以由金属材料制成，起到提高强度和支撑作用，缓冲件用于减小噪音和起到缓冲撞击力的作用。具体地，缓冲件为橡胶层或泡棉层。缓冲件可以由泡棉或者橡胶材料制成。
参照图12，图12表示的是每一振动电机10均包括上壳3和下壳4的示意图。在一实施例中，振动电机10还包括上壳3和下壳4，上壳3盖合于导磁环22的顶面，下壳4盖合于导磁环22的底面，上壳3形成有安装限位件5的上通孔31，下壳4形成有安装限位件5的下通孔41。上通孔31和下通孔41正对设置，可以通过卡接的方式将限位件5安装在上通孔31和下通孔41上。当然，在其它实施例中，还可以将限位件5安装在导磁环22上。当然，还可以通过一个上壳3体和一个下壳4体将四个振动电机10一同设置于上壳3体和下壳4体形成的容纳腔内。
需要说明的是，振动电机组件100的转动原理属现有技术，但为清楚的说明本申请的实现方式，现采用一具体实施例将振动电机组件100的原理说明如下。如图17所示，振动电机组件100包括定子2和偏心动子1，定子2包括导磁环22和设置于导磁环22内的两个线圈21，偏心动子1包括转轴12和偏心轮11，偏心轮11包括套装于转轴12的导磁件1123和永磁铁1121，永磁铁1121包括均匀对称设置于导磁件1123外周的两块子磁铁11211，一块质量块1122设置于两个子永磁铁1121形成的其中一个安装槽中，另一个安装槽形成偏心轮11的缺口113。首先，可以给两块子磁铁11211充磁，两块子磁铁11211的充磁方向一致，如图17中箭头所示采用水平向左充磁，给线圈21的通电如图17中方向所示，其中“*”表示电流方向垂直纸面向内，“.”表示电流方向垂直纸面向外，根据安培定律，偏心动子1可产生顺时针方向的扭矩，即动偏心动子1会顺时针方向旋转，通过控制线圈21中电流的方向可使振动电机组件100绕轴持续旋转；利用该装置可将电能转换为旋转的机械能，结构简单，由于偏心动子1为偏心结构，旋转时自带震感。
根据本发明的另一方面，本发明还提供一种电子设备，电子设备包括外壳和设置于外壳内的如上述的振动电机组件100。由于电子设备包括了上述的振动电机组件100所有实施例的全部技术方案，因此具有上述全部技术方案带来的所有有益效果，在此不在一一赘述。上述电子设备可以是手机或游戏手柄等。
最后应说明的是：以上各实施例仅用以说明本申请的技术方案，并非因 此限制本发明的专利范围；尽管参照前述各实施例对本申请进行了详细的说明，本领域的普通技术人员应当理解：在本发明的技术构思下，其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分或者全部技术特征进行等同替换；或直接/间接运用在其他相关的技术领域，而这些修改或者替换，并不使相应技术方案的本质脱离本申请各实施例技术方案的范围，其均应涵盖在本申请的权利要求和说明书的范围当中。尤其是，只要不存在结构冲突，各个实施例中所提到的各项技术特征均可以任意方式组合起来。本申请并不局限于文中公开的特定实施例，而是包括落入权利要求的范围内的所有技术方案。

Claims (10)

  1. 一种振动电机组件，其特征在于，包括第一电机组和第二电机组，所述第一电机组和所述第二电机组均包括两个振动电机，四个所述振动电机沿同一平面设置，各所述振动电机包括：
    定子，所述定子包括线圈组件，所述线圈组件形成有空腔；
    偏心动子，所述偏心动子包括转轴和套装于所述转轴的偏心轮，所述偏心轮包括磁性组件，所述偏心轮设置于所述空腔内且能够在所述空腔内转动；四个所述振动电机的所述转轴的中心分别位于四边形的四个顶点上；
    限位件，所述限位件用以限制所述偏心轮的转动角度。
  2. 根据权利要求1所述的振动电机组件，其特征在于，所述偏心轮形成有缺口，所述限位件设置于所述缺口处。
  3. 根据权利要求2所述的振动电机组件，其特征在于，所述限位件为圆弧段，所述缺口为扇形缺口，所述限位件的圆心、所述扇形缺口的圆心、所述转轴的中心同心设置，所述扇形缺口对应的第一圆心角与所述限位件对应的第二圆心角的差值为90°。
  4. 根据权利要求1所述的振动电机组件，其特征在于，所述偏心轮旋转的角度范围为0°～90°；所述第一电机组中，两个所述振动电机的旋转方向相同，且两个所述振动电机与分别对应的两个所述限位件同时碰撞；所述第二电机组中，两个所述振动电机的旋转方向相同，且两个所述振动电机与分别对应的两个所述限位件同时碰撞。
  5. 根据权利要求4所述的振动电机组件，其特征在于，所述第一电机组中，两个所述限位件关于两个所述转轴的中心连线的中点成中心对称；所述第二电机组中，两个所述限位件关于所述第二电机组的两个所述振动电机的两个所述转轴的中心连线的中点成中心对称。
  6. 根据权利要求1所述的振动电机组件，其特征在于，所述第一电机组的两个所述振动电机分别为第一电机和第二电机，所述第二电机组的两个所述振动电机分别为第三电机和第四电机，所述第一电机和所述第三电机相邻设置，所述第二电机和所述第四电机相邻设置；以所述第一电机的转轴和所述第三电机的转轴的中心的连线的中垂线为对称线，所述第一电机组的所述限位件和所述第二电机组中的所述限位件呈对称设置。
  7. 根据权利要求1～6中任一项所述的振动电机组件，其特征在于，所述磁性组件包括导磁件、永磁铁和质量块，所述导磁件套装于所述转轴上，所述永磁铁和所述质量块设置于所述导磁件的外周。
  8. 根据权利要求7所述的振动电机组件，其特征在于，所述永磁铁包括两块子磁铁，两块所述子磁铁沿所述导磁件的外周间隔均匀分布，两块所述子磁铁形成有两个安装槽，所述质量块的数量为一块，所述质量块设置于其中一个所述安装槽中。
  9. 根据权利要求1～6中任一项所述的振动电机组件，其特征在于，所述限位件包括限位块和缓冲件，所述缓冲件设置于所述限位块用于与所述偏心轮抵接的抵接面上。
  10. 一种电子设备，其特征在于，所述电子设备包括外壳和设置于所述外壳内的如权利要求1～9中任一项所述的振动电机组件。
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