WO2022142188A1 - 线性振动马达和电子设备 - Google Patents

线性振动马达和电子设备 Download PDF

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Publication number
WO2022142188A1
WO2022142188A1 PCT/CN2021/101702 CN2021101702W WO2022142188A1 WO 2022142188 A1 WO2022142188 A1 WO 2022142188A1 CN 2021101702 W CN2021101702 W CN 2021101702W WO 2022142188 A1 WO2022142188 A1 WO 2022142188A1
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WIPO (PCT)
Prior art keywords
counterweight
magnets
magnet
hole
assembly
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PCT/CN2021/101702
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English (en)
French (fr)
Inventor
史德璋
毛东升
张雨晴
郑国敬
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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 WO2022142188A1 publication Critical patent/WO2022142188A1/zh

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K41/00—Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
    • H02K41/02—Linear motors; Sectional motors
    • H02K41/03—Synchronous motors; Motors moving step by step; Reluctance motors

Definitions

  • the utility model relates to the technical field of vibration devices, in particular to a linear vibration motor and electronic equipment.
  • linear motors are generally used as actuators for haptic feedback, such as vibration feedback for clicking on a touch screen.
  • the linear vibration motor includes a casing, a vibrator assembly and a stator assembly, the vibrator assembly includes a counterweight, and the stator assembly includes an iron core and a coil sleeved on the outside of the iron core.
  • the coil of the stator assembly is energized and generated. Magnetic field, the iron core generates ampere force under the action of the magnetic field, and the counterweight vibrates back and forth under the action of the ampere force generated by the stator assembly.
  • This structural design often has low magnetic field utilization, small driving force, and slow vibration response. question.
  • the main purpose of the utility model is to provide a linear vibration motor and electronic equipment, aiming at solving the problems existing in the linear vibration motor in the related art.
  • the linear vibration motor proposed by the present utility model includes a casing, a vibrator assembly and a stator assembly fixed on the casing.
  • the vibrator assembly includes: a counterweight block that can be vibrated In the housing, the counterweight is provided with a through hole along a direction perpendicular to its vibration direction, the stator assembly includes a coil, the coil is passed through the through hole, and the axial direction of the coil is the same as that of the through hole.
  • the vibration direction of the counterweight is vertical; and a magnet assembly, the magnet assembly is arranged on the hole wall of the through hole, and the direction of the force applied by the magnet assembly when the coil is energized is the same as that of the counterweight
  • the blocks vibrate in the same direction.
  • the magnet assembly includes at least two magnets, wherein the two magnets are sequentially arranged on the hole wall of the through hole along the extending direction of the through hole, and the magnetization directions of the two magnets are both
  • the vibration direction is the same as that of the counterweight, and the polarities of the two magnets are set in opposite directions.
  • the number of the magnets is four, and any two magnets are a group, the two groups of magnets are distributed along the extending direction of the through hole, and the two magnets in the same group vibrate along the counterweight block.
  • the direction is opposite to the hole wall of the through hole; the polarities of the two magnets located in the same group are set in the same direction, and the polarities of the two sets of magnets are set in opposite directions.
  • the magnet assembly includes at least one magnet, the magnet is disposed on the hole wall of the through hole, and the magnetization direction of the magnet is perpendicular to the vibration direction of the counterweight.
  • two magnets are provided, and the two magnets are arranged opposite to the hole wall of the through hole along the vibration direction of the counterweight, and the polarities of the two magnets are arranged in opposite directions.
  • the vibrator assembly further includes two elastic supports, the two elastic supports are distributed on both sides of the counterweight along its vibration direction, and the two sides of each elastic support are respectively connected to the inner wall of the housing and the counterweight.
  • the vibrator assembly further includes two first blocks and two second blocks, and two sides of the elastic support member pass through the first block and the second block respectively. Welded to the inner wall of the casing and the counterweight.
  • the stator assembly further includes a magnetic conductive core structure, and the coil is sleeved on the outer side of the magnetic conductive core structure.
  • the conductive magnetic core structure includes a first conductive magnetic core, a second conductive magnetic core and a third conductive magnetic core, and the first conductive magnetic core, the second conductive magnetic core and the third conductive magnetic core are vertically arranged.
  • the counterweights are distributed in sequence in the direction of the vibration direction and connected to each other, and the coils are sleeved on the outside of the second conductive magnet core.
  • the stator assembly further includes a circuit board, the circuit board is fixed on the inner wall of the housing, the third magnetic core is fixed on the circuit board, and the coil is electrically connected to the circuit board.
  • the utility model also provides an electronic device, the electronic device includes a linear vibration motor, the linear vibration motor includes a casing, a vibrator assembly and a stator assembly fixed on the casing, and the vibrator assembly includes: a counterweight The counterweight block is vibrably arranged in the casing, the counterweight block is provided with a through hole perpendicular to its vibration direction, and the stator assembly includes a coil, and the coil is passed through the through hole inside, and the axial direction of the coil is perpendicular to the vibration direction of the weight; and a magnet assembly, the magnet assembly is arranged on the hole wall of the through hole, and the magnet assembly is energized when the coil is energized.
  • the direction of the acting force is the same as the vibration direction of the counterweight.
  • the linear vibration motor includes a casing, a vibrator assembly and a stator assembly fixed to the casing.
  • the vibrator assembly includes a counterweight block and a magnet assembly.
  • the counterweight block is vibrably arranged in the casing.
  • a through hole is arranged perpendicular to its vibration direction
  • the stator assembly includes a coil, the coil is penetrated in the through hole, and the axial direction of the coil is perpendicular to the vibration direction of the counterweight block
  • the magnet assembly is arranged on the hole wall of the through hole, and the magnet When the coil is energized, the direction of the force acting on the component is the same as the vibration direction of the counterweight.
  • a magnet assembly is added to the vibrator assembly.
  • the coil of the stator assembly When the linear vibration motor is working, the coil of the stator assembly is energized to generate a magnetic field and generate an ampere force.
  • the vibrator assembly vibrates under the action of the ampere force generated by the stator assembly.
  • the magnet assembly is in the stator
  • the magnetic field of the component will interact with the stator component, and the direction of the force is the same as the vibration direction of the vibrator component, which can improve the effective utilization of the magnetic field of the stator component, the driving force is large, the vibration response is fast, and the linear vibration The motor obtains better vibration performance.
  • FIG. 1 is a schematic diagram of an exploded structure of an embodiment of the linear vibration motor of the present invention
  • FIG. 2 is a schematic cross-sectional structural diagram of a linear vibration motor in the X direction
  • FIG. 3 is a schematic cross-sectional structural diagram of a linear vibration motor in the Z direction
  • FIG. 4 is a schematic cross-sectional structural diagram of a linear vibration motor in the Y direction
  • FIG. 5 is a schematic structural diagram of the linear vibration motor from a perspective after the housing is removed;
  • FIG. 6 is a schematic structural diagram of the linear vibration motor from another perspective after the casing is removed;
  • FIG. 7 is a cross-sectional view of the vibrator assembly in the X direction of the linear vibration motor
  • FIG. 8 is a schematic cross-sectional structural diagram of the vibrator assembly in the Z direction in the linear vibration motor
  • FIG. 9 is a cross-sectional structural schematic diagram of the stator assembly in the linear vibration motor in the X direction;
  • FIG. 10 is a schematic cross-sectional structural diagram of the stator assembly of the linear vibration motor in the Z direction.
  • connection can be a fixed connection, a detachable connection, or an integrated; It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication between two elements or the interaction relationship between the two elements, unless otherwise clearly defined.
  • connection can be a fixed connection, a detachable connection, or an integrated; It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication between two elements or the interaction relationship between the two elements, unless otherwise clearly defined.
  • the utility model proposes a linear vibration motor 100, and the linear vibration motor 100 is a component that utilizes the principle of electromagnetic force to convert electrical energy into mechanical vibration.
  • the X direction is the left-right direction
  • the Y direction is the front-rear direction
  • the Z direction is the up-down direction.
  • the linear vibration motor 100 includes a casing 10 , a vibrator assembly 20 and a stator assembly 30 fixed to the casing 10
  • the vibrator assembly 20 includes: a counterweight block 21 , a counterweight block 21 Vibrably disposed in the housing 10
  • the counterweight 21 is provided with a through hole 211 perpendicular to its vibration direction
  • the stator assembly 30 includes a coil 32 , the coil 32 is inserted in the through hole 211 , and the axial direction of the coil 32 is perpendicular to the vibration direction of the counterweight 21
  • the magnet assembly 22 the magnet assembly 22 is arranged on the hole wall of the through hole 211 , and the force direction of the magnet assembly 22 when the coil 32 is energized is the same as the vibration direction of the counterweight 21 .
  • the vibrator assembly 20 includes a counterweight block 21 and a magnet assembly 22, the vibration direction of the vibrator assembly 20 is the X direction, that is, the vibration direction of the counterweight block 21 is the X direction, and the counterweight block 21 is arranged at the center of the accommodating cavity, and There is a certain safety gap up and down, and a through hole 211 is opened in the middle of the counterweight block 21.
  • the through hole 211 runs through the upper and lower surfaces of the counterweight block 21 along the Z direction (up and down direction). Assembly operation of the magnet assembly 22 .
  • the magnet assembly 22 is fixed on the hole wall of the through hole 211 , and the fixing method can be selected as adhesive bonding, which is easy to operate and relatively stable in installation.
  • the stator assembly 30 passes through the through hole 211 along the Z direction (up and down direction) and is located inside the magnet assembly 22 .
  • the stator assembly 30 includes an iron core structure and a coil 32 sleeved on the iron core structure.
  • the coil 32 of the stator assembly 30 is energized to generate a magnetic field
  • the iron core structure generates ampere force in the left and right direction (X direction) under the action of the magnetic field
  • the vibrator assembly 20 will be in the left and right direction under the action of the ampere force.
  • Vibration occurs in the (X direction), and by changing the current direction of the stator assembly 30, the vibrator assembly 20 can vibrate back and forth in the left-right direction (X direction).
  • the magnet assembly 22 will interact with the magnetic field of the stator assembly 30
  • the direction of the acting force is the same as the vibration direction of the vibrator assembly 20, so that the effective utilization of the magnetic field of the stator assembly 30 can be improved, the driving force is larger, and the vibration response is faster.
  • the linear vibration motor 100 obtains Better vibration performance.
  • the counterweight block 21 is the core component of the linear motor.
  • the counterweight block 21 of a conventional motor has many features and a complex structure. Most of the counterweight blocks 21 are processed by metal injection molding (MIM), and the processing cost is high.
  • MIM metal injection molding
  • the counterweight block 21 of the utility model has a relatively flat surface and can be formed by die casting, which significantly reduces the manufacturing cost.
  • the linear vibration motor 100 includes a casing 10, a vibrator assembly 20 and a stator assembly 30 fixed to the casing 10.
  • the vibrator assembly 20 includes a counterweight 21 and a magnet assembly 22.
  • the weight 21 is vibrably arranged in the housing 10, the counterweight 21 is provided with a through hole 211 perpendicular to its vibration direction, and the stator assembly 30 includes a coil 32, the coil 32 is inserted in the through hole 211, and the coil 32 is provided with a through hole 211.
  • the axial direction is perpendicular to the vibration direction of the counterweight block 21 , the magnet assembly 22 is arranged on the hole wall of the through hole 211 , and the direction of the force applied by the magnet assembly 22 when the stator assembly 30 is energized is the same as the vibration direction of the counterweight block 21 . .
  • a magnet assembly 22 is added to the vibrator assembly 20.
  • the coil 32 of the stator assembly 30 is energized to generate a magnetic field and generate an ampere force, and the vibrator assembly 20 vibrates under the action of the ampere force generated by the stator assembly 30, and At the same time, the magnet assembly 22 interacts with the stator assembly 30 under the magnetic field of the stator assembly 30, and the direction of the acting force is the same as the vibration direction of the vibrator assembly 20, so that the effective utilization of the magnetic field of the stator assembly 30 can be improved.
  • the driving force is larger, the vibration response is faster, and the linear vibration motor 100 obtains better vibration performance.
  • the present invention can realize that the direction of the magnet assembly 22 subjected to the force of the stator assembly 30 is the same as the vibration direction of the counterweight 21 by designing the arrangement mode and magnetization direction of the magnet assembly 22.
  • the magnet assembly 22 includes at least two magnets 221 , wherein the two magnets 221 are sequentially disposed on the hole wall of the through hole 211 along the extending direction of the through hole 211 .
  • the magnetization of the two magnets 221 The directions are the same as the vibration direction of the counterweight 21 , and the polarities of the two magnets 221 are arranged in opposite directions.
  • the two magnets 221 are sequentially disposed on the same hole wall of the through hole 211 along the up-down direction (Z direction), and the magnetization directions of the two magnets 221 are both the left-right direction (the Z direction).
  • X direction which is the vibration direction of the counterweight 21 .
  • the polarity setting directions of the two magnets 221 are opposite, for example, the polarity setting direction of the upper magnet 221 is left N right S, and the polarity setting direction of the lower magnet 221 is left S right N; or the polarity setting direction of the upper magnet 221 The direction is left S, right N, and the polarity setting direction of the lower magnet 221 is left N right S.
  • the coil of the stator assembly 30 when the linear vibration motor 100 is working, the coil of the stator assembly 30 generates a magnetic field after passing a current in a certain direction, and generates an ampere force in the right direction (positive X direction). Vibration occurs to the right (X positive direction) under the action.
  • the direction of the acting force under the magnetic field of the stator assembly 30 is the right direction (X positive direction). direction), which is the same as the vibration direction of the counterweight block 21, so that the effective utilization of the magnetic field of the stator assembly 30 can be effectively improved, and better vibration performance can be obtained.
  • the stator assembly 30 Conversely, if the current direction of the stator assembly 30 is changed, the stator assembly 30 will generate an ampere force in the left direction (X negative direction), and the counterweight 21 will vibrate to the left (X left direction) under the action of the ampere force, At the same time, since the polarities of the upper and lower magnets 221 are set in opposite directions, the direction of the acting force under the magnetic field of the stator assembly 30 is the left direction (X negative direction), which is the same as the vibration of the counterweight 21 . The directions are the same, so that the effective utilization of the magnetic field of the stator assembly 30 can be effectively improved, and better vibration performance can be obtained.
  • the counterweight 21 can vibrate back and forth in the left-right direction (X direction) by changing the current direction of the stator assembly 30, and during the reciprocating vibration of the counterweight 21, the interaction between the magnet 221 and the stator assembly 30 If the force direction remains the same as its vibration direction in real time, better vibration performance can be obtained in real time.
  • the number of magnets 221 may be more than two, and the arrangement and magnetization direction of other magnets 221 are not limited here, as long as the direction of the force generated by the magnet 221 and the stator assembly 30 and its vibration The directions can be the same, which are all within the protection scope of the present invention.
  • any two magnets 221 are a group.
  • the two groups of magnets 221 are distributed along the extending direction of the through hole 211 and are located in the same
  • the two magnets 221 of the group are oppositely disposed on the hole wall of the through hole 211 along the vibration direction of the counterweight 21;
  • the four magnets 221 are the upper left magnet 221, the upper right magnet 221, the lower left magnet 221 and the lower right magnet 221, wherein the upper left magnet 221 and the upper right magnet 221 are a set of magnets 221, and the lower left magnet 221 and the lower right magnet 221 are One set of magnets 221, the two sets of magnets 221 are distributed in the vertical direction, and the upper left magnet 221 and the upper right magnet 221 are arranged on the left and right side walls of the through hole 211 opposite to each other, and the lower left magnet 221 and the lower right magnet 221 are arranged opposite to the left and right sides of the through hole 211. side wall.
  • the polarities of the upper left magnet 221 and the upper right magnet 221 are set in the same direction, the polarity of the lower left magnet 221 and the lower right magnet 221 are set in the same direction, and the polarities of the upper left magnet 221 and the lower left magnet 221 are set in opposite directions.
  • the polarity setting directions of the magnets 221 are both left S and right N, and the polarity setting directions of the lower left magnet 221 and the lower right magnet 221 are both left N right S; or, the polarity setting directions of the upper left magnet 221 and the upper right magnet 221 are both.
  • the polarity setting directions of the lower left magnet 221 and the lower right magnet 221 are both left S and right N.
  • the direction of the acting force received by the upper and lower left magnets 221 under the magnetic field of the stator assembly 30 and the direction of the acting force received by the upper and lower right magnets 221 are the same as the vibration direction of the counterweight 21, In this way, the effective utilization rate of the magnetic field of the stator assembly 30 can be further more effectively improved, and better vibration performance can be obtained.
  • the magnet assembly 22 includes at least one magnet 221 , the magnet 221 is disposed on the hole wall of the through hole 211 , and the magnetization direction of the magnet 221 is perpendicular to the vibration direction of the counterweight 21 .
  • the magnet assembly 22 when the magnet assembly 22 includes a magnet 221 , the magnet 221 is fixed to a side wall of the through hole 211 by gluing.
  • the polarity setting direction of the magnet 221 is not limited here, and may be upper N lower S, or upper S lower N.
  • the direction of the interaction force that the magnet 221 receives under the magnetic field of the stator assembly 30 is the left-right direction, which is the vibration direction of the counterweight 21, In this way, the effective utilization rate of the magnetic field of the stator assembly 30 can be effectively improved, and better vibration performance can be obtained.
  • the number of magnets 221 may also be two or more, and the arrangement and magnetization direction of other magnets 221 are not limited here, as long as the direction of the force generated by the magnets 221 and the stator assembly 30 is the same as that of the magnets 221 .
  • the vibration directions can be the same, which are all within the protection scope of the present invention.
  • two magnets 221 are provided, and the two magnets 221 are arranged opposite to the hole wall of the through hole 211 along the vibration direction of the counterweight 21 , and the polarities of the two magnets 221 are arranged in opposite directions.
  • the two magnets 221 are the left magnet 221 and the right magnet 221 respectively.
  • the left magnet 221 and the right magnet 221 are oppositely disposed on the left and right walls of the through hole 211 along the left and right direction (X direction), and the two magnets 221
  • the polarity setting direction of the left magnet 221 is up N and down S
  • the polarity setting direction of the right magnet 221 is up S and down N
  • the polarity setting direction of the left magnet 221 is up S down N
  • the polarity setting direction of the right magnet 221 is up N down S.
  • the direction of the acting force received by the left magnet 221 under the magnetic field of the stator assembly 30 and the direction of the acting force received by the right magnet 221 are the same as the vibration direction of the counterweight 21, so that In this way, the effective utilization rate of the magnetic field of the stator assembly 30 can be further more effectively improved, and better vibration performance can be obtained.
  • the vibrator assembly 20 further includes two elastic support members 23 , and the two elastic support members 23 are distributed on the counterweight block 21 along the On both sides of the vibration direction, two sides of each elastic support member 23 are respectively connected to the inner wall of the housing 10 and the counterweight 21 .
  • the left and right sides of the counterweight 21 are connected to the inner wall of the housing 10 through two elastic supports 23 .
  • the elastic supports 23 can limit the position of the counterweight 21 and provide vibration of the counterweight 21 .
  • Elastic recovery It should be noted that the elastic support member 23 is generally V-shaped and has a good elastic recovery rate.
  • the vibrator assembly 20 further includes two first blocks 24 and two second blocks 25 , and two sides of an elastic support member 23 are welded to the shell through a first block 24 and a second block 25 respectively.
  • the elastic support 23 is connected to the inner wall of the housing 10 by spot welding through the first stopper 24, and is connected to the counterweight 21 by electric welding through the second stopper 25, which can effectively ensure that the elastic support 23 is connected to the inner wall of the housing 10 and the inner wall of the housing 10 by electric welding.
  • the connection firmness of the counterweight block 21 ensures the stability and reliability of the setting of the entire vibrator assembly 20 , thereby ensuring the reliability and stability of the vibration process of the vibrator assembly 20 .
  • the stator assembly 30 further includes a magnetic conductive core structure 31 , and the coil 32 is sleeved on the outer side of the conductive magnetic core structure 31 .
  • the coil 32 When the linear vibration motor 100 is working, the coil 32 is fed with current to generate a magnetic field, the magnetic core structure 31 generates an ampere force under the action of the magnetic field, the counterweight 21 vibrates under the action of the ampere force, and at the same time, the magnet assembly 22 is subjected to an interaction force under the magnetic field of the coil 32, and the direction of the force is the same as the vibration direction of the counterweight 21, so that the effective utilization of the magnetic field of the stator assembly 30 can be effectively improved, and the linear vibration motor 100 can obtain better vibration performance .
  • the permeable core structure 31 includes a first permeable core 311 , a second permeable core 312 and a third permeable core 313 , and the first permeable core 311
  • the second conductive core 312 and the third conductive core 313 are distributed sequentially along the direction perpendicular to the vibration direction of the weight block 21 and connected to each other.
  • the coil 32 is sleeved on the outside of the second conductive core 312 .
  • the first conductive magnetic core 311 and the third magnetic conductive core 313 are both block-shaped, the second conductive magnetic core 312 is cylindrical, and the surface of the first conductive magnetic core 311 is provided with a first insertion hole 3111, the first insertion hole 3111 is The contact hole 3111 can penetrate through both surfaces of the first conductive core 311 in the up-down direction (Z direction), and its size is adapted to the size of the second conductive core 312 .
  • the surface of the third conductive core 313 is provided with a second
  • the insertion hole 3131 and the second insertion hole 3131 can pass through the two surfaces of the third conductive core 313 in the up-down direction (Z direction), and their size is also matched with the size of the second conductive core 312.
  • the upper and lower ends of the second conductive magnetic core 312 are inserted and fixed in the first insertion hole 3111 and the second insertion hole 3131 respectively.
  • the first conductive magnetic core 311, the second conductive magnetic core 312 and the third conductive magnetic core 311 The magnetic core 313 is enclosed to form an I-shaped structure.
  • the coil 32 is sleeved on the outer side of the second magnetic conductive core 312.
  • the first magnetic conductive core 311 and the third magnetic conductive core 313 located at both ends of the second magnetic conductive core 312 play a magnetic conductive role, so that the I-shaped conductive magnet
  • the magnetic force received by the core structure 31 under the magnetic field generated by the coil 32 is larger, so that the linear vibration motor 100 can obtain better vibration performance.
  • the iron core material has its own damping, so there is no need to add additional damping structural parts, which reduces product assembly parts, simplifies the assembly process of the linear vibration motor 100, and reduces product costs.
  • the coil 32 is located at the center of the magnetic circuit system. After assembly, there is a certain safety gap between the coil 32 and the first, second and third conductive cores 311 , 312 and 313 .
  • stator assembly 30 further includes a circuit board 33 , the circuit board 33 is fixed on the inner wall of the housing 10 , the third conductive core 313 is fixed on the circuit board 33 , and the coil 32 is electrically connected to the circuit board.
  • the circuit board 33 can be selected as a flexible circuit board to facilitate its assembling operation.
  • the circuit board 33 is fixed on the inner wall of the housing 10, and its fixing method can be selected as adhesive fixing, screw fixing, snap fixing or other reasonable and effective methods.
  • the fixing method the third magnetic core 313 is fixed to the surface of the circuit board 33 facing away from the inner wall of the casing 10 by adhesive, so that the installation and fixing operation of the stator assembly 30 can be realized.
  • the coil 32 is electrically connected to the circuit board 33 , the circuit board 33 at least partially penetrates the casing 10 and is exposed outside the casing 10 , and the exposed portion of the circuit board 33 is used for electrical communication with external circuits.
  • the casing 10 is a split structure, including a bottom plate 11 and a cover 13 covering the bottom plate 11 .
  • the bottom plate 11 and the cover 13 are assembled to form an accommodating cavity.
  • the assembly operation of the vibrator assembly 20 and the stator assembly 30 is facilitated.
  • the circuit board 33 is fixed to the bottom plate 11 , and the elastic support 23 is welded and fixed to the inner wall of the housing 13 through the first stopper 24 .
  • the present invention also provides an electronic device, the electronic device includes the aforementioned linear vibration motor 100, and the specific structure of the linear vibration motor 100 refers to the aforementioned embodiments. Since the electronic device adopts all the technical solutions of the foregoing embodiments, it has at least all the beneficial effects brought about by the technical solutions of the foregoing embodiments, which will not be repeated here.
  • the electronic device here can be selected from a mobile phone, a tablet computer, a smart wearable device, a game console, a multimedia entertainment device, etc.
  • the linear vibration motor 100 is installed in the electronic device as an actuator for haptic feedback, such as vibration feedback for clicking on a touch screen.
  • the linear vibration motor 100 is a component that converts electrical energy into mechanical vibration using the principle of electromagnetic force, the linear vibration motor 100 is usually mounted on an edge portion of an electronic device, and generates vibration in a direction perpendicular to an object receiving vibration.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Electromagnetism (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线性振动马达和电子设备。其中，所述线性振动马达包括壳体、振子组件及固定于所述壳体的定子组件，所述振子组件包括配重块和磁铁组件，所述配重块可振动地设于所述壳体内，所述配重块沿垂直于其振动方向设有贯穿孔，所述定子组件包括线圈，所述线圈穿设于所述贯穿孔内，且所述线圈的轴向方向与所述配重块的振动方向垂直；所述磁铁组件设于所述贯穿孔的孔壁，且所述磁铁组件于所述线圈通电时所受的作用力方向与所述配重块的振动方向相同。本实用新型的技术方案能够提高定子组件的磁场有效利用率，驱动力较大，振动响应较快，线性振动马达获得较佳的振动性能。

Description

线性振动马达和电子设备 技术领域
本实用新型涉及振动装置技术领域，特别涉及一种线性振动马达和电子设备。
背景技术
随着通信技术的发展，便携式电子产品，如手机、掌上游戏机或者掌上多媒体娱乐设备等进入人们的生活。在这些便携式电子产品中，一般采用线性马达作为触觉反馈的执行机构，例如点击触摸屏的振动反馈等。
相关技术中，线性振动马达包括壳体、振子组件及定子组件，振子组件包括配重块，定子组件包括铁芯和套设于铁芯外侧的线圈，在工作时，定子组件的线圈通电并产生磁场，铁芯在磁场的作用下产生安培力，配重块在定子组件产生的安培力作用下发生往复振动，这种结构设计往往存在磁场有效利用率较低、驱动力小，振动响应慢等问题。
实用新型内容
本实用新型的主要目的是提供一种线性振动马达和电子设备，旨在解决相关技术中线性振动马达存在的问题。
为实现上述目的，本实用新型提出的线性振动马达，包括壳体、振子组件及固定于所述壳体的定子组件，所述振子组件包括：配重块，所述配重块可振动地设于所述壳体内，所述配重块沿垂直于其振动方向设有贯穿孔，所述定子组件包括线圈，所述线圈穿设于所述贯穿孔内，且所述线圈的轴向方向与所述配重块的振动方向垂直；和磁铁组件，所述磁铁组件设于所述贯穿孔的孔壁，且所述磁铁组件于所述线圈通电时所受的作用力方向与所述配重块的振动方向相同。
可选地，所述磁铁组件包括至少两个磁铁，其中的两个所述磁铁沿所述贯穿孔的延伸方向依次设于所述贯穿孔的孔壁，两个所述磁铁的充磁方向均 与所述配重块的振动方向相同，且两个所述磁铁的极性设置方向相反。
可选地，所述磁铁设置为四个，其中的任两个磁铁为一组，两组磁铁沿所述贯穿孔的延伸方向分布，位于同一组的两个磁铁沿所述配重块的振动方向相对设于所述贯穿孔的孔壁；位于同一组的两个磁铁的极性设置方向相同，两组磁铁的极性设置方向相反。
可选地，所述磁铁组件包括至少一块磁铁，所述磁铁设于所述贯穿孔的孔壁，所述磁铁的充磁方向与所述配重块的振动方向垂直。
可选地，所述磁铁设有两个，两个所述磁铁沿所述配重块的振动方向相对设于所述贯穿孔的孔壁，两个所述磁铁的极性设置方向相反。
可选地，所述振子组件还包括两个弹性支撑件，两个所述弹性支撑件分布设于所述配重块沿其振动方向的两侧，每一所述弹性支撑件的两侧分别连接于所述壳体的内壁和所述配重块。
可选地，所述振子组件还包括两个第一挡块和两个第二挡块，一所述弹性支撑件的两侧分别通过一所述第一挡块和一所述第二挡块焊接于所述壳体的内壁和所述配重块。
可选地，所述定子组件还包括导磁铁芯结构，所述线圈套设于所述导磁铁芯结构的外侧。
所述导磁铁芯结构包括第一导磁铁芯、第二导磁铁芯及第三导磁铁芯，所述第一导磁铁芯、所述第二导磁铁芯及所述第三导磁铁芯沿垂直于所述配重块之振动方向的方向依次分布，且相互连接，所述线圈套设于所述第二导磁铁芯的外侧。
所述定子组件还包括线路板，所述线路板固定于所述壳体的内壁，所述第三导磁铁芯固定于所述线路板，所述线圈电性连接于所述线路板。
本实用新型还提出了一种电子设备，所述电子设备包括线性振动马达，所述线性振动马达包括壳体、振子组件及固定于所述壳体的定子组件，所述振子组件包括：配重块，所述配重块可振动地设于所述壳体内，所述配重块沿垂直于其振动方向设有贯穿孔，所述定子组件包括线圈，所述线圈穿设于所述贯穿孔内，且所述线圈的轴向方向与所述配重块的振动方向垂直；和磁铁组件，所述磁铁组件设于所述贯穿孔的孔壁，且所述磁铁组件于所述线圈通电时所受的作用力方向与所述配重块的振动方向相同。
本实用新型的技术方案，线性振动马达包括壳体、振子组件及固定于壳体的定子组件，振子组件包括配重块和磁铁组件，配重块可振动地设于壳体内，配重块沿垂直于其振动方向设有贯穿孔，定子组件包括线圈，线圈穿设于贯穿孔内，且线圈的轴向方向与配重块的振动方向垂直，磁铁组件设于贯穿孔的孔壁，且磁铁组件于线圈通电时所受的作用力方向与配重块的振动方向相同。这里振子组件中增设了磁铁组件，在线性振动马达工作时，定子组件的线圈通电产生磁场并产生安培力，振子组件在定子组件产生的安培力作用下发生振动，与此同时，磁铁组件在定子组件的磁场下会与定子组件之间发生相互作用，其作用力的方向与振子组件的振动方向相同，这样可以提高定子组件的磁场有效利用率，驱动力较大，振动响应较快，线性振动马达获得较佳的振动性能。
附图说明
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为本实用新型线性振动马达一实施例的分解结构示意图；
图2为线性振动马达于X方向的剖视结构示意图；
图3为线性振动马达于Z方向的剖视结构示意图；
图4为线性振动马达于Y方向的剖视结构示意图；
图5为线性振动马达移去壳体后一视角的结构示意图；
图6为线性振动马达移去壳体后另一视角的结构示意图；
图7为线性振动马达中振子组件于X方向的剖视结构示意图；
图8为线性振动马达中振子组件于Z方向的剖视结构示意图；
图9为线性振动马达中定子组件于X方向的剖视结构示意图；
图10为线性振动马达中定子组件于Z方向的剖视结构示意图。
附图标号说明：
标号 名称 标号 名称
100 线性振动马达 25 第二挡块
10 壳体 30 定子组件
11 底板 31 导磁铁芯结构
13 罩壳 311 第一导磁铁芯
20 振子组件 3111 第一插接孔
21 配重块 312 第二导磁铁芯
211 贯穿孔 313 第三导磁铁芯
22 磁铁组件 3131 第二插接孔
221 磁铁 32 线圈
23 弹性支撑件 33 线路板
24 第一挡块    
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。
具体实施方式
下面将结合本实用新型实施例中的附图，对本实用新型实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅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。在本实用新型的描述中，“多个”的含义是至少两个，例如两个，三个等，除非另有明确具体的限定。
在本实用新型中，除非另有明确的规定和限定，术语“连接”、“固定”等应做广义理解，例如，“固定”可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系，除非另有明确的限定。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本实用新型中的具体含义。
另外，本实用新型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。
本实用新型提出一种线性振动马达100，线性振动马达100是一种利用电磁力原理将电能转化为机械振动的部件。
参照图1至图4，图中X方向为左右方向，Y方向为前后方向，Z方向为上下方向，下面实施例可参照该方向进行描述说明。
在本实用新型线性振动马达100一实施例中，线性振动马达100包括壳体10、振子组件20及固定于壳体10的定子组件30，振子组件20包括：配重块21，配重块21可振动地设于壳体10内，配重块21沿垂直于其振动方向设有贯穿孔211，定子组件30包括线圈32，线圈32穿设于贯穿孔211内，且线圈32的轴向方向与配重块21的振动方向垂直；和磁铁组件22，磁铁组件22设于贯穿孔211的孔壁，且磁铁组件22于线圈32通电时的作用力方向与配重块21的振动方向相同。
具体地，壳体10内部形成有容置腔，振子组件20和定子组件30均位于容置腔内，且定子组件30固定于壳体10的内壁。振子组件20包括配重块21和磁铁组件22，振子组件20的振动方向为X方向，也即配重块21的振动方向为X方向，配重块21设置于容置腔的中心位置，且上下留有一定安全间隙，配重块21的中部开设有贯穿孔211，贯穿孔211沿Z方向(上下方向)贯穿配重块21的上下表面，贯穿孔211的形状可选为方形孔，以便 于磁铁组件22的装配操作。磁铁组件22固定于贯穿孔211的孔壁，其固定方式可选为胶接，该方式操作简单且设置较为稳固。装配时，定子组件30沿Z方向(上下方向)穿设于贯穿孔211内，并位于磁铁组件22的内侧，定子组件30包括铁芯结构和套设于铁芯结构的线圈32。线性振动马达100工作时，定子组件30的线圈32通电后产生磁场，铁芯结构在磁场的作用下产生左右方向(X方向)的安培力，振子组件20在安培力的作用下会在左右方向(X方向)上发生振动，通过改变定子组件30的通电电流方向可以使得振子组件20在左右方向(X方向)上发生往复振动，与此同时，磁铁组件22在定子组件30的磁场下会与定子组件30之间发生相互作用，其作用力的方向与振子组件20的振动方向相同，如此可以提高定子组件30的磁场有效利用率，驱动力较大，振动响应较快，线性振动马达100获得较佳的振动性能。
需要说明的是，配重块21是线性马达的核心部件，传统马达的配重块21上特征较多，结构较为复杂，多采用金属注射成型(MIM)加工，加工成本较高。本实用新型配重块21表面较为平整，可采用压铸成型，显著降低了其制作成本。
因此，可以理解的，本实用新型的技术方案，线性振动马达100包括壳体10、振子组件20及固定于壳体10的定子组件30，振子组件20包括配重块21和磁铁组件22，配重块21可振动地设于壳体10内，配重块21沿垂直于其振动方向设有贯穿孔211，定子组件30包括线圈32，线圈32穿设于贯穿孔211内，且线圈32的轴向方向与配重块21的振动方向垂直，磁铁组件22设于贯穿孔211的孔壁，且磁铁组件22于定子组件30通电时所受的作用力方向与配重块21的振动方向相同。这里振子组件20中增设了磁铁组件22，在线性振动马达100工作时，定子组件30的线圈32通电产生磁场并产生安培力，振子组件20在定子组件30产生的安培力作用下发生振动，与此同时，磁铁组件22在定子组件30的磁场下会与定子组件30之间发生相互作用，其作用力的方向与振子组件20的振动方向相同，这样就可以提高定子组件30的磁场有效利用率，驱动力较大，振动响应较快，线性振动马达100获得较佳的振动性能。
本实用新型可以通过设计磁铁组件22的设置方式和充磁方向来实现磁 铁组件22受定子组件30的作用力方向与配重块21的振动方向相同。
在本实用新型的一实施例中，磁铁组件22包括至少两个磁铁221，其中的两个磁铁221沿贯穿孔211的延伸方向依次设于贯穿孔211的孔壁，两个磁铁221的充磁方向均与配重块21的振动方向相同，且两个磁铁221的极性设置方向相反。
具体地，在磁铁组件22包括两个磁铁221时，两个磁铁221沿上下方向(Z方向)依次设于贯穿孔211的同一孔壁，且两个磁铁221的充磁方向均为左右方向(X方向)，即为配重块21的振动方向。两个磁铁221的极性设置方向相反，比如，上面磁铁221的极性设置方向为左N右S，下面磁铁221的极性设置方向为左S右N；或者是上面磁铁221的极性设置方向为左S右N，下面磁铁221的极性设置方向为左N右S。
可以理解的，在线性振动马达100工作时，定子组件30的线圈通入某一方向的电流后产生磁场，并产生向右方向(X正方向)的安培力，配重块21在安培力的作用下向右(X正方向)发生振动，与此同时，由于上下两个磁铁221的极性设置方向相反，则在定子组件30的磁场下所受到的作用力方向为向右方向(X正方向)，该方向与配重块21的振动方向相同，这样就可以有效提高定子组件30的磁场有效利用率，获得较佳的振动性能。反之，改变定子组件30的通电电流方向，则定子组件30会会产生向左方向(X负方向)的安培力，配重块21在安培力的作用下向左(X左方向)发生振动，与此同时，由于上下两个磁铁221的极性设置方向相反，则在定子组件30的磁场下所受到的作用力方向为向左方向(X负方向)，该方向与配重块21的振动方向相同，这样也可以有效提高定子组件30的磁场有效利用率，获得较佳的振动性能。如此，可以通过改变定子组件30的通电电流方向使得配重块21在左右方向(X方向)上发生往复振动，且在配重块21往复振动的过程中，磁铁221与定子组件30产生的作用力方向实时保持与其振动方向相同，则可以实时获得较佳的振动性能。
当然地，在其他一些实施例中，磁铁221的数量也可以是两个以上，其他磁铁221的设置方式和充磁方向在此不作限制，只要磁铁221与定子组件30产生的作用力方向与其振动方向相同即可，均在本实用新型的保护范围之内。
参照图2和图7，在本实用新型的一实施例中，磁铁221设置为四个，其中的任两个磁铁221为一组，两组磁铁221沿贯穿孔211的延伸方向分布，位于同一组的两个磁铁221沿配重块21的振动方向相对设于贯穿孔211的孔壁；位于同一组的两个磁铁221的极性设置方向相同，两组磁铁221的极性设置方向相反。
具体地，四个磁铁221分别为左上磁铁221、右上磁铁221、左下磁铁221及右下磁铁221，其中，左上磁铁221和右上磁铁221为一组磁铁221，左下磁铁221和右下磁铁221为一组磁铁221，两组磁铁221上下方向分布，且左上磁铁221和右上磁铁221相对设于贯穿孔211的左右两侧壁，左下磁铁221和右下磁铁221相对设于贯穿孔211的左右两侧壁。左上磁铁221和右上磁铁221的极性设置方向相同，左下磁铁221和右下磁铁221的极性设置方向相同，左上磁铁221和左下磁铁221的极性设置方向相反，比如，左上磁铁221和右上磁铁221的极性设置方向均为左S右N，左下磁铁221和右下磁铁221的极性设置方向均为左N右S；或者是，左上磁铁221和右上磁铁221的极性设置方向均为左N右S，左下磁铁221和右下磁铁221的极性设置方向均为左S右N。如此的设置，在线性振动马达100工作时，左上下磁铁221在定子组件30的磁场下所受到的作用力方向和右上下磁铁221受的作用力方向均与配重块21的振动方向相同，这样就可以进一步更有效提高定子组件30的磁场有效利用率，获得更佳的振动性能。
在本实用新型的一实施例中，磁铁组件22包括至少一块磁铁221，磁铁221设于贯穿孔211的孔壁，磁铁221的充磁方向与配重块21的振动方向垂直。
本实施例中，磁铁组件22包括一块磁铁221时，磁铁221通过胶粘固定于贯穿孔211的一侧壁，磁铁221的充磁方向为上下方向，即与配重块21的振动方向垂直。这里磁铁221的极性设置方向不作限制，可以为上N下S，也可以是上S下N。在线性振动马达100工作时，由于磁铁221的充磁方向为上下方向，则磁铁221在定子组件30的磁场下所受到的相互作用力方向为左右方向，即为配重块21的振动方向，这样可以有效地提高定子组件30的磁场有效利用率，获得较佳的振动性能。
当然地，在其他一些实施例中，磁铁221的数量也可以是两个或以上， 其他磁铁221的设置方式和充磁方向在此不作限制，只要磁铁221与定子组件30产生的作用力方向与其振动方向相同即可，均在本实用新型的保护范围之内。
可选的实施例中，磁铁221设有两个，两个磁铁221沿配重块21的振动方向相对设于贯穿孔211的孔壁，两个磁铁221的极性设置方向相反。
本实施例中，两个磁铁221分别为左磁铁221和右磁铁221，左磁铁221和右磁铁221沿左右方向(X方向)相对设于贯穿孔211的左右两孔壁，且两个磁铁221的极性设置方向相反，比如，左磁铁221的极性设置方向为上N下S，右磁铁221的极性设置方向为上S下N；或者是，左磁铁221的极性设置方向为上S下N，右磁铁221的极性设置方向为上N下S。如此的设置，在线性振动马达100工作时，左磁铁221在定子组件30的磁场下所受到的作用力方向和右磁铁221所受的作用力方向均与配重块21的振动方向相同，这样就可以进一步更有效提高定子组件30的磁场有效利用率，获得更佳的振动性能。
参照图3、图5、图6及图8，在本实用新型的一实施例中，振子组件20还包括两个弹性支撑件23，两个弹性支撑件23分布设于配重块21沿其振动方向的两侧，每一弹性支撑件23的两侧分别连接于壳体10的内壁和所述配重块21。
这里配重块21的左右两侧通过两个弹性支撑件23连接于壳体10的内壁，弹性支撑件23可以对配重块21起到限位的作用，且为配重块21的振动提供弹性恢复力。需要说明的是，弹性支撑件23大致呈V型结构，具有较好的弹性恢复率。
进一步地，振子组件20还包括两个第一挡块24和两个第二挡块25，一弹性支撑件23的两侧分别通过一第一挡块24和一第二挡块25焊接于壳体10的内壁和所述配重块21。
这里弹性支撑件23通过第一挡块24与壳体10内壁进行点焊连接，通过第二挡块25与配重块21进行电焊连接，如此可以有效保证弹性支撑件23与壳体10内壁和配重块21的连接牢固性，从而保证整个振子组件20的设置稳定性和可靠性，进而保障振子组件20振动过程的可靠性和稳定性。
参照图2、图3、图6及图10，在本实用新型的一实施例中，定子组件 30还包括导磁铁芯结构31，线圈32套设于导磁铁芯结构31的外侧。
在线性振动马达100工作时，线圈32通入电流并产生磁场，导磁铁芯结构31在磁场的作用下产生安培力，配重块21在安培力的作用下发生振动，与此同时，磁铁组件22在线圈32的磁场下受到相互作用力，该作用力方向与配重块21的振动方向相同，如此便可以有效提高定子组件30的磁场有效利用率，线性振动马达100获得较佳的振动性能。
参照图2、图4及图9，可选的实施例中，导磁铁芯结构31包括第一导磁铁芯311、第二导磁铁芯312及第三导磁铁芯313，第一导磁铁芯311、第二导磁铁芯312及第三导磁铁芯313沿垂直于配重块21之振动方向的方向依次分布，且相互连接，线圈32套设于第二导磁铁芯312的外侧。
具体地，第一导磁铁芯311和第三导磁铁芯313均为块状，第二导磁铁芯312为柱状，第一导磁铁芯311的表面开设有第一插接孔3111，第一插接孔3111可沿上下方向(Z方向)贯穿第一导磁铁芯311的两表面，且其尺寸与第二导磁铁芯312的尺寸相适配，第三导磁铁芯313的表面开设有第二插接孔3131，第二插接孔3131可沿上下方向(Z方向)贯穿第三导磁铁芯313的两表面，且其尺寸亦与第二导磁铁芯312的尺寸相适配，装配时，第二导磁铁芯312的上下两端分别插接固定于第一插接孔3111和第二插接孔3131内，装配后，第一导磁铁芯311、第二导磁铁芯312及第三导磁铁芯313围合形成工字型结构。线圈32套设于第二导磁铁芯312的外侧，这里位于第二导磁铁芯312两端的第一导磁铁芯311和第三导磁铁芯313起到导磁作用，这样该工字型导磁铁芯结构31在线圈32产生的磁场下所受到的磁力更大，如此线性振动马达100便可获得更佳的振动性能。此外，铁芯材料存在自身阻尼，不需另外加阻尼结构件，这样便可减少产品装配件，简化线性振动马达100的装配工艺，降低产品成本。
需要说明的是，线圈32位于磁路系统中心位置，装配后，线圈32与第一导磁铁芯311、第二导磁铁芯312及第三导磁铁芯313之间均存在一定的安全间隙。
进一步地，定子组件30还包括线路板33，线路板33固定于壳体10的内壁，第三导磁铁芯313固定于线路板33，线圈32电性连接于电路板。
这里线路板33可选为柔性电路板，以便于其装配操作，线路板33固定 于壳体10的内壁，其固定方式可选为胶粘固定、螺钉固定、卡扣固定或其他合理且有效的固定方式，第三导磁铁芯313采用胶粘固定于线路板33背向壳体10内壁的表面，如此便可实现定子组件30的安装固定操作。装配后，线圈32电性连接于线路板33，线路板33至少部分贯穿壳体10并外露于壳体10外部，线路板33的外露部用于与外部电路电性连通。
再次参照图1和图2，壳体10为分体结构，包括底板11和罩设于底板11的罩壳13，底板11与罩壳13装配后围合形成容置腔，如此的设置，可方便于振子组件20和定子组件30的装配操作。装配时，线路板33固定于底板11，弹性支撑件23通过第一挡块24焊接固定于罩壳13的内壁。
本实用新型还提出一种电子设备，所述电子设备包括如前所述的线性振动马达100，该线性振动马达100的具体结构参照前述实施例。由于电子设备采用了前述所有实施例的全部技术方案，因此至少具有前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。
这里电子设备可选为手机、平板电脑、智能穿戴设备、游戏机、多媒体娱乐设备等，线性振动马达100安装于电子设备中，作为触觉反馈的执行机构，例如点击触摸屏的振动反馈。线性振动马达100是一种利用电磁力原理将电能转化为机械振动的部件，线性振动马达100通常安装电子设备的边缘部分，并且在与接收振动的对象相垂直的方向上产生振动。
以上所述仅为本实用新型的优选实施例，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 (11)

  1. 一种线性振动马达，包括壳体、振子组件及固定于所述壳体的定子组件，其特征在于，所述振子组件包括：
    配重块，所述配重块可振动地设于所述壳体内，所述配重块沿垂直于其振动方向设有贯穿孔，所述定子组件包括线圈，所述线圈穿设于所述贯穿孔内，且所述线圈的轴向方向与所述配重块的振动方向垂直；和
    磁铁组件，所述磁铁组件设于所述贯穿孔的孔壁，且所述磁铁组件于所述线圈通电时所受的作用力方向与所述配重块的振动方向相同。
  2. 如权利要求1所述的线性振动马达，其特征在于，所述磁铁组件包括至少两个磁铁，其中的两个所述磁铁沿所述贯穿孔的延伸方向依次设于所述贯穿孔的孔壁，两个所述磁铁的充磁方向均与所述配重块的振动方向相同，且两个所述磁铁的极性设置方向相反。
  3. 如权利要求2所述的线性振动马达，其特征在于，所述磁铁设置为四个，其中的任两个磁铁为一组，两组磁铁沿所述贯穿孔的延伸方向分布，位于同一组的两个磁铁沿所述配重块的振动方向相对设于所述贯穿孔的孔壁；
    位于同一组的两个磁铁的极性设置方向相同，两组磁铁的极性设置方向相反。
  4. 如权利要求1所述的线性振动马达，其特征在于，所述磁铁组件包括至少一块磁铁，所述磁铁设于所述贯穿孔的孔壁，所述磁铁的充磁方向与所述配重块的振动方向垂直。
  5. 如权利要求4所述的线性振动马达，其特征在于，所述磁铁设有两个，两个所述磁铁沿所述配重块的振动方向相对设于所述贯穿孔的孔壁，两个所述磁铁的极性设置方向相反。
  6. 如权利要求1所述的线性振动马达，其特征在于，所述振子组件还包括两个弹性支撑件，两个所述弹性支撑件分布设于所述配重块沿其振动方向的两侧，每一所述弹性支撑件的两侧分别连接于所述壳体的内壁和所述配重块。
  7. 如权利要求4所述的线性振动马达，其特征在于，所述振子组件还包括两个第一挡块和两个第二挡块，一所述弹性支撑件的两侧分别通过一所述第一挡块和一所述第二挡块焊接于所述壳体的内壁和所述配重块。
  8. 如权利要求1至7中任一项所述的线性振动马达，其特征在于，所述定子组件还包括导磁铁芯结构，所述线圈套设于所述导磁铁芯结构的外侧。
  9. 如权利要求6所述的线性振动马达，其特征在于，所述导磁铁芯结构包括第一导磁铁芯、第二导磁铁芯及第三导磁铁芯，所述第一导磁铁芯、所述第二导磁铁芯及所述第三导磁铁芯沿垂直于所述配重块之振动方向的方向依次分布，且相互连接，所述线圈套设于所述第二导磁铁芯的外侧。
  10. 如权利要求9所述的线性振动马达，其特征在于，所述定子组件还包括线路板，所述线路板固定于所述壳体的内壁，所述第三导磁铁芯固定于所述线路板，所述线圈电性连接于所述线路板。
  11. 一种电子设备，其特征在于，所述电子设备包括如权利要求1至10中任一项所述的线性振动马达。
PCT/CN2021/101702 2020-12-30 2021-06-23 线性振动马达和电子设备 WO2022142188A1 (zh)

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