Multi-directional vibration motor

Abstract

The present invention provides a multi-directional vibration motor. [Solution] The multi-directional vibration motor includes a housing, a vibration unit, and a coil unit, the vibration unit includes a cylindrical magnetic steel system, the magnetic steel system is magnetized along a first direction parallel to its axial direction, the coil unit is located in the housing and faces the magnetic steel system, the multi-directional vibration motor further includes a peripheral magnetic ring fixed to the housing and having an annular shape, the peripheral magnetic ring surrounds the coil unit and is spaced apart from the coil unit, the inner side of the peripheral magnetic ring has the same magnetic pole as the side of the magnetic steel system adjacent thereto facing the inner side of the peripheral magnetic ring, the peripheral magnetic ring is made of a plurality of magnetic steels, each of which is symmetrical in twos, the peripheral magnetic ring includes two first magnetic rings respectively installed on opposite sides of the coil unit along the second direction and two second magnetic rings respectively installed on opposite sides of the coil unit along the third direction, the second direction and the third direction are both distributed on the same plane and are both perpendicular to the first direction. Compared with the related art, the multi-directional vibration motor of the present invention can realize vibration in multiple directions and has a small volume.

Description

[Technical field]

[0001] The present invention relates to a motor, and in particular to a multi-directional vibration motor applied in the field of mobile electronic products. [Background technology]

[0002] With the development of electronic technology, portable consumer electronic products such as mobile phones, portable game consoles, navigation devices, or portable multimedia entertainment devices are increasingly attracting people's attention, and these electronic products generally use vibration motors to provide system feedback, such as incoming call notification, message notification, navigation notification for mobile phones, vibration feedback for game consoles, etc. Such a wide range of applications requires the vibration motor to have excellent performance and long service life.

[0003] A vibration motor according to the related art includes a base having an accommodation space, a vibration unit, an elastic assembly fixed to the base and suspending the vibration unit in the accommodation space, and a coil unit fixed to the base and driving the vibration of the vibration unit, and an electric field generated by the coil unit interacts with a magnetic field generated by the vibration unit to drive the vibration unit to perform reciprocating linear motion, thereby generating vibrations.

[0004] However, in the vibration motor according to the related art, the vibration unit has a damping effect during the vibration process, and the related art adjusts the damping effect of the vibration unit by adding a magnetic liquid or a damping foam, but the magnetic liquid or foam has a large volume, which increases the overall volume of the vibration motor. In addition, even if an elastic assembly is used in the vibration motor according to the related art, the overall volume of the vibration motor is also increased. In order to achieve vibration in multiple directions, the vibration unit and the coil unit of the vibration motor according to the related art are installed separately, and one vibration unit and a corresponding coil unit are installed in each direction, which also increases the overall volume of the vibration motor.

[0005] Therefore, there is a need to provide a new vibration motor to solve the above problems. Summary of the Invention [Problem to be solved by the invention]

[0006] The technical problem to be solved by the present invention is to provide a multi-directional vibration motor that can realize vibration in multiple directions and has a small volume. [Means for solving the problem]

[0007] In order to solve the above technical problems, the present invention provides a multi-directional vibration motor, the multi-directional vibration motor including a housing having an accommodation space, a vibration unit accommodated in the accommodation space, and a coil unit fixed to the housing for driving the vibration of the vibration unit, the vibration unit including a magnetic steel system interacting with the coil unit to provide a driving force, the magnetic steel system being cylindrical, the magnetic steel system being magnetized along a first direction parallel to its axial direction, the coil unit being located within the housing and facing the magnetic steel system, the multi-directional vibration motor further including a peripheral magnetic ring fixed to the housing and having an annular shape, the peripheral magnetic ring is arranged to surround the coil unit and spaced apart from the coil unit, the inside of the magnetic ring has the same magnetic pole as the side of the adjacent magnetic steel system facing the inside of the magnetic ring so as to generate a damping force that inhibits the movement of the vibration unit, the peripheral magnetic ring is composed of a plurality of magnetic steels that are symmetrical in pairs, the peripheral magnetic rings include two first magnetic rings respectively arranged on opposite sides of the coil unit along a second direction and two second magnetic rings respectively arranged on opposite sides of the coil unit along a third direction, the second direction and the third direction are both distributed on the same plane and are both perpendicular to the first direction.

[0008] Preferably, the magnetic steel system includes a central magnetic steel and a central magnetic ring that interact with the coil unit to provide a driving force, the central magnetic steel being cylindrical, the central magnetic ring being annular and arranged to surround the central magnetic steel, the central magnetic steel and the central magnetic ring being both magnetized along the first direction, and one end of the central magnetic steel has an opposite magnetic pole to one end of the central magnetic ring adjacent to it.

[0009] Preferably, the vibration unit includes an annular mass block, the mass block surrounding the outside of the central magnetic ring and fixedly connected to the central magnetic ring.

[0010] Preferably, the magnetization direction of the peripheral magnetic rings includes any one of radial magnetization, axial magnetization and unidirectional magnetization, and the unidirectional magnetization means that the first magnetic ring is magnetized along the second direction and the second magnetic ring is magnetized along the third direction.

[0011] Preferably, the second direction and the third direction are mutually perpendicular.

[0012] Preferably, the housing includes a lower cover plate, a side wall extending by folding from the periphery of the lower cover plate, and an upper cover plate covering the side wall and installed opposite the lower cover plate, the lower cover plate, the side wall and the upper cover plate together surround the accommodation space, the coil unit includes a first coil and a second coil accommodated in the accommodation space, the first coil is fixed to the lower cover plate, and the second coil is fixed to the upper cover plate, and is installed so as to form an angle between the arrangement directions of the first coil and the second coil.

[0013] Preferably, there are two first coils, the directions of current flowing through the two first coils are opposite to each other, there are two second coils, the directions of current flowing through the two second coils are opposite to each other, and both the first coil and the second coil are track-shaped or semicircular.

[0014] Preferably, both the lower cover plate and the upper cover plate are made of a magnetically conductive material.

[0015] Preferably, the vibration unit further includes two flat plates respectively installed on both sides opposite to the first direction of the magnetic steel system, and the multi-directional vibration motor further includes a slide plate fixed to the housing, the slide plate being located between the peripheral magnetic ring and the coil unit, and the side of the slide plate adjacent to the flat plate, the side of the peripheral magnetic ring adjacent to the flat plate, and the side of the coil unit adjacent to the flat plate are flush with each other and are all spaced apart from the flat plate to form a gap.

[0016] Preferably, the flat plate is made of a non-magnetically conductive material and the sliding plate is made of a self-lubricating material. Effect of the Invention

[0017] Compared with the related art, the multi-directional vibration motor of the present invention has the magnetic steel system having a cylindrical shape and the coil unit provided opposite to the magnetic steel system installed in a housing, and the magnetic steel system is magnetized along a first direction parallel to its axial direction, the vibration unit having the magnetic steel system is the mover of the multi-directional vibration motor of the present invention, the coil unit is fixed at the center position of the housing to be the stator of the multi-directional vibration motor of the present invention, and a peripheral magnetic ring having an annular shape is further installed in the housing, the peripheral magnetic ring surrounds the coil unit and is installed at a distance from the coil unit, and the inner side of the peripheral magnetic ring is installed so that the magnetic pole is the same as that of the side of the magnetic steel system facing the inner side of the peripheral magnetic ring adjacent thereto, thereby generating a damping force that inhibits the movement of the vibration unit, i.e., generating a magnetic field repulsion force, and the peripheral magnetic ring is the magnetic spring of the multi-directional vibration motor of the present invention. The structure is simple, and the space in the housing can be used to install the stator, the mover and the magnetic spring, so that the multi-directional vibration motor of the present invention has a small volume. The peripheral magnetic rings are made of multiple magnetic steels, which are symmetrical in pairs. Preferably, two first magnetic rings and two second magnetic rings are installed on a plurality of magnetic steels, the two first magnetic rings are respectively installed on opposite sides of the coil unit along the second direction, and the two second magnetic rings are respectively installed on opposite sides of the coil unit along the third direction, where the second direction and the third direction are both distributed on the same plane and are both perpendicular to the first direction. In this structure, the coil unit drives the first magnetic ring, so that the vibration unit vibrates independently along the second direction, or the coil unit drives the second magnetic ring, so that the vibration unit vibrates independently along the third direction, or the coil unit drives the first magnetic ring and the second magnetic ring simultaneously, so that the vibration unit vibrates along the resultant force direction of the second direction and the third direction, thereby the multi-directional vibration motor of the present invention can realize multi-directional vibration. [Brief description of the drawings]

[0018] [Figure 1] 1 is a schematic perspective view showing a configuration of a multi-directional vibration motor according to the present invention; [Diagram 2] 1 is an exploded perspective view showing a partial configuration of a multi-directional vibration motor according to the present invention; [Diagram 3] 2 is a cross-sectional view taken along line AA shown in FIG. 1. [Figure 4] FIG. 2 is a schematic diagram showing the magnetic pole distribution of the multi-directional vibration motor of the present invention. [Diagram 5] 13A and 13B are schematic diagrams showing magnetic pole distributions at other angles of the multi-directional vibration motor of the present invention. [Figure 6] 5A and 5B are schematic diagrams illustrating a configuration of a coil unit in the multi-directional vibration motor of the present invention. [Figure 7] 2 is a schematic diagram showing the configuration of a peripheral magnetic ring in the multi-directional vibration motor of the present invention; FIG. [Figure 8] 11 is a schematic diagram showing the magnetic pole distribution of another embodiment of the multi-directional vibration motor of the present invention. FIG. [Figure 9] 13 is a schematic diagram showing the magnetic pole distribution of another embodiment of a multi-directional vibration motor of the present invention. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] The present invention will be further described below with reference to the drawings and embodiments.

[0020] The present invention provides a multi-directional vibration motor 100.

[0021] As shown in FIGS. 1-7, the multi-directional vibration motor 100 includes a housing 1, a vibration unit 2, a coil unit 3, a peripheral magnetic ring 4, a sliding plate 5, a first conductive member 6 and a second conductive member 7.

[0022] The housing 1 has an accommodation space 10 .

[0023] Specifically, the housing 1 includes a lower cover plate 11, a side wall 12 extending from a peripheral edge of the lower cover plate 11 by bending it, and an upper cover plate 13 that is provided to cover the side wall 12 and faces the lower cover plate 11. The lower cover plate 11, the side wall 12, and the upper cover plate 13 all surround the accommodation space 10. Of course, this is not limited thereto, and the lower cover plate 11 and the side wall 12 may be integrally formed.

[0024] In this embodiment, the lower cover plate 11 and the upper cover plate 13 are both made of magnetically conductive material. When the lower cover plate 11 and the upper cover plate 13 are magnetically conductive, they are helpful to form a circuit by magnetic lines, which enhances the driving force and effectively reduces the overall leakage magnetic flux of the multi-directional vibration motor 100.

[0025] The vibration unit 2 is accommodated in the accommodation space 10 .

[0026] Specifically, the vibration unit 2 includes a magnetic steel system 21 , a mass block 22 and a flat plate 23 .

[0027] The magnetic steel system 21 interacts with the coil unit 3 to provide the driving force.

[0028] The magnetic steel system 21 has a cylindrical shape. The magnetic steel system 21 is magnetized along a first direction Z parallel to the axial direction of the magnetic steel system 21. In this embodiment, the first direction Z is the thickness direction of the multi-directional vibration motor 100.

[0029] Specifically, the magnetic steel system 21 includes a central magnetic steel 211 and a central magnetic ring 212 that interact with the coil unit 3 to provide a driving force.

[0030] The central magnetic steel 211 has a cylindrical shape.

[0031] The central magnetic ring 212 has an annular shape and is disposed around the central magnetic steel 211. In this embodiment, the central magnetic ring 212 is a circular ring.

[0032] The central magnetic steel 211 and the central magnetic ring 212 are both magnetized along the first direction Z.

[0033] One end of the central magnetic steel 211 has an opposite magnetic pole to that of the adjacent end of the central magnetic ring 212. In this structure, magnetic lines of force pass through the coil unit 3 to form a magnetic circuit.

[0034] The mass block 22 has an annular shape. The mass block 22 surrounds the outside of the central magnetic ring 212 and is fixedly connected to the central magnetic ring 212. The mass block 22 is used as a counterweight.

[0035] There are two flat plates 23, and the two flat plates 23 are installed on both sides of the magnetic steel system 21 facing the first direction Z. The two flat plates 23 are used to integrally form the central magnetic steel 211, the central magnetic ring 212 and the mass block 22 in the first direction Z, which helps to integrally form the vibration unit 2 and serves as the mover of the multi-directional vibration motor 100, making it easy for the vibration unit 2 to vibrate within the accommodation space 10.

[0036] In this embodiment, the flat plate 23 is made of a non-conductive material, which can reduce the thickness of the flat plate 23, effectively guarantee the flatness of the friction surface, and reduce the friction coefficient, which is helpful for miniaturizing the multi-directional vibration motor 100 and improving the vibration performance.

[0037] The coil unit 3 is fixed to the housing 1 and drives the vibration of the vibration unit 2.

[0038] The coil unit 3 is located within the housing 1 and is installed directly opposite the magnetic steel system 21. In this embodiment, the coil unit 3 is located at the center position of the housing 1.

[0039] Specifically, the coil unit 3 includes a first coil 31 and a second coil 32 housed in the housing space 10 .

[0040] The first coil 31 is fixed to the lower cover plate 11. The first coil 31 is installed to extend along the second direction X or the third direction Y. Here, the term "extending" refers to the direction in which most of the current in the first coil 31 flows, i.e., the current direction.

[0041] The second direction X and the third direction Y are both distributed on the same plane and are both perpendicular to the first direction Z. In this embodiment, the second direction X and the third direction Y are perpendicular to each other.

[0042] There are two first coils 31. The directions of current flowing through the two first coils 31 are opposite to each other.

[0043] The second coil 32 is fixed to the upper cover plate 13. The second coil 32 is disposed to extend along the third direction Y or the second direction X. Here, the term "extending" refers to the direction in which most of the current flows in the second coil 32, i.e., the current direction. Thus, the first coil 31 and the second coil 32 are disposed to form an angle between their respective arrangement directions. In this embodiment, the arrangement direction is the current direction, i.e., the first coil 31 and the second coil 32 are disposed to form an angle between their respective arrangement directions.

[0044] There are two second coils 32. The directions of current flowing through the two second coils 32 are opposite to each other. As shown in Fig. 6, the direction of current I2 in the first coil 31 is the third direction Y, and the direction of current I1 in the second coil 32 is the second direction X. After being energized, the coil unit 3 generates a driving force perpendicular to the current direction, for example, the first coil 31 generates a driving force in the third direction Y, and the second coil 32 generates a driving force in the second direction X.

[0045] The first coil 31 and the second coil 32 are both track-shaped or semicircular. In this embodiment, the first coil 31 and the second coil 32 are both semicircular. The first coil 31 and the second coil 32 having a semicircular shape can increase the ratio of effective segments, and the utilization rate of the same volume is improved by about 10% compared to the track-shaped first coil 31 and the second coil 32.

[0046] The peripheral magnetic ring 4 is fixed to the housing 1 .

[0047] The peripheral magnetic ring 4 has an annular shape. The peripheral magnetic ring 4 surrounds the coil unit 3 and is disposed at a distance from the coil unit 3.

[0048] The inner side of the peripheral magnetic ring 4 has the same magnetic polarity as the side of the adjacent magnetic steel system 21 facing the inner side of the peripheral magnetic ring 4, thereby generating a damping force that inhibits the movement of the vibration unit 2.

[0049] The peripheral magnetic ring 4 provides a repulsive force to the central magnetic ring 212 in the magnetic steel system 21, forming a return rigidity in the second direction X and the third direction Y. When the central magnetic ring 212 is not driven by an external force, the central magnetic ring 212 receives a repulsive force and automatically returns to the center point of the multi-directional vibration motor 100. In an actual assembly process, the central magnetic ring 212 may rotate due to the unbalanced repulsive force from the peripheral magnetic ring 4, forming a torque. Therefore, if the central magnetic ring 212 is a ring, the adverse effects of the rotation can be avoided.

[0050] The peripheral magnetic ring 4 is made up of multiple magnetic steel pieces arranged in pairs, which are symmetrical to each other, and the structure is convenient for magnetizing and assembling the magnetic steel pieces.

[0051] Specifically, the peripheral magnetic ring 4 includes two first magnetic rings 41 respectively installed on opposite sides of the coil unit 3 along the second direction X, and two second magnetic rings 42 respectively installed on opposite sides of the coil unit 3 along the third direction Y.

[0052] The two first magnetic rings 41 have the same shape. The two second magnetic rings 42 have the same shape. The first magnetic ring 41 and the second magnetic ring 42 may be the same or different. When the first magnetic ring 41 and the second magnetic ring 42 have the same shape, the multi-directional vibration motor 100 has the same stiffness in the second direction X and the same stiffness in the third direction Y, and the multi-directional vibration motor 100 has the same frequency in the two directions, and is a bidirectional motor with a single frequency. When the first magnetic ring 41 and the second magnetic ring 42 have different shapes, the multi-directional vibration motor 100 has different stiffness in the second direction X and the third direction Y, and is a bidirectional motor with a dual frequency. The specific actual selection is considered based on design requirements, and a detailed description is omitted here.

[0053] The magnetization direction of the peripheral magnetic ring 4 includes any one of radial magnetization, axial magnetization, and unidirectional magnetization.

[0054] In this embodiment, the magnetization direction of the peripheral magnetic ring 4 is radial magnetization. With reference to Figures 4 and 5 at the same time, taking the magnetic pole on the side close to the upper cover plate 13 as an example, the magnetic pole of one end of the central magnetic steel 211 is an N pole, and the magnetic pole of one end of the central magnetic ring 212 is an S pole. That is, the magnetic pole of one end of the central magnetic steel 211 is opposite to that of the adjacent one end of the central magnetic ring 212. The magnetic pole of the inner side of the peripheral magnetic ring 4 is an N pole, that is, the magnetic pole of the inner side of the peripheral magnetic ring 4 is the same as that of the adjacent side of the magnetic steel system 21 facing the inner side of the peripheral magnetic ring 4.

[0055] In this embodiment, the conventional magnetic spring motor has serious leakage flux when the motor housing adopts a non-conductive material, and when a conductive material is adopted, the magnetic steel of the vibrator and the housing will form a large suction force, and in serious cases, the vibrator may not be firmly attracted to drive. In the multi-directional vibration motor 100 of the present invention, the peripheral magnetic ring 4 and the central magnetic ring 212 form a repulsive force, and when the vibrator is attracted to the side wall 12 on the side where the vibrator is located, the repulsive force increases synchronously correspondingly, which can effectively reduce the problem of the vibrator being firmly attracted. In design, through reasonable parameter design, the repulsive force received by the vibrator can be balanced with the suction force by the lower cover plate 11 and the upper cover plate 13, and the problem of the vibrator being firmly attracted is thoroughly solved.

[0056] As shown in Fig. 8, Fig. 8 is a schematic diagram showing the magnetic pole distribution of another embodiment of the multi-directional vibration motor of the present invention. In this embodiment, the magnetization direction of the peripheral magnetic ring 4 is axial magnetization. The difference from this embodiment is the magnetization direction of the peripheral magnetic ring.

[0057] As shown in Fig. 9, Fig. 9 is a schematic diagram showing the magnetic pole distribution of another embodiment of the multi-directional vibration motor of the present invention. In this embodiment, the magnetization direction of the peripheral magnetic ring 4 is the unidirectional magnetization. Specifically, the unidirectional magnetization is such that the first magnetic ring 41 is magnetized along the second direction X, and the second magnetic ring 42 is magnetized along the third direction Y. When the unidirectional magnetization is adopted, the cost is low and the magnetization is easy.

[0058] The sliding plate 5 is fixed to the housing 1. The sliding plate 5 is located between the peripheral magnetic ring 4 and the coil unit.

[0059] In this embodiment, the side of the slide plate 5 adjacent to the flat plate 23, the side of the peripheral magnetic ring 4 adjacent to the flat plate 23, and the side of the coil unit 3 adjacent to the flat plate 23 are flush with each other, and are spaced apart from the flat plate 23 to form a gap. This structure is useful for avoiding friction and wear between the slide plate 5 and the flat plate 23, thereby improving the vibration performance of the multi-directional vibration motor 100 of the present invention.

[0060] The slide plate 5 is made of a self-lubricating material. In this embodiment, the slide plate 5 is made of a polytetrafluoroethylene composite material.

[0061] The first conductive member 6 is electrically connected to the first coil 31 , and the first conductive member 6 is used to provide a control current to the first coil 31 .

[0062] The second conductive member 7 is electrically connected to the second coil 32 , and the first conductive member 6 is used to provide a control current to the second coil 32 .

[0063] Compared with the related art, the multi-directional vibration motor of the present invention comprises a cylindrical magnetic steel system and a coil unit facing the magnetic steel system in a housing, the magnetic steel system is magnetized along a first direction parallel to its axial direction, the vibration unit having the magnetic steel system is the mover of the multi-directional vibration motor of the present invention, the coil unit is fixed to the center of the housing as the stator of the multi-directional vibration motor of the present invention, and a ring-shaped peripheral magnetic ring is further disposed in the housing, the peripheral magnetic ring surrounds the coil unit and is spaced apart from the coil unit, the inner side of the peripheral magnetic ring is disposed so that the magnetic poles are the same as those of the adjacent magnetic steel system facing the inner side of the peripheral magnetic ring, thereby generating a damping force that inhibits the movement of the vibration unit, i.e., generating a repulsive force of the magnetic field, and the peripheral magnetic ring is the magnetic spring of the multi-directional vibration motor of the present invention. The structure is simple, and the stator, the mover and the magnetic spring can be mounted using the space in the housing, so that the multi-directional vibration motor of the present invention has a small volume. The peripheral magnetic ring is composed of a plurality of magnetic steels, each of which is symmetrical in twos. Preferably, two first magnetic rings and two second magnetic rings are installed on the plurality of magnetic steels, and the two first magnetic rings are installed on opposite sides of the coil unit along a second direction, and the two second magnetic rings are installed on opposite sides of the coil unit along a third direction, where the second direction and the third direction are both distributed on the same plane and perpendicular to the first direction. In this structure, the coil unit drives the first magnetic ring, so that the vibration unit vibrates alone along the second direction, or the coil unit drives the second magnetic ring, so that the vibration unit vibrates alone along the third direction, or the coil unit drives the first magnetic ring and the second magnetic ring simultaneously, so that the vibration unit vibrates along the second direction, the third direction, and the resultant force direction, thereby the multi-directional vibration motor of the present invention can realize multi-directional vibration.

[0064] The above are only examples of the present invention and are not intended to limit the scope of the patent of the present invention. Any equivalent structure or equivalent flow transformation made by utilizing the contents of the specification and drawings of the present invention, or any direct or indirect application to other related technical fields, are also included in the scope of patent protection of the present invention.

Claims

1. A multi-directional vibration motor, The vibration device includes a housing having an accommodation space, a vibration unit accommodated in the accommodation space, and a coil unit fixed to the housing for driving the vibration of the vibration unit, the vibration unit includes a magnetic steel system that interacts with the coil unit to provide a driving force, the magnetic steel system having a cylindrical shape, the magnetic steel system being magnetized along a first direction parallel to an axial direction thereof; the coil unit is located within the housing and directly opposite the magnetic steel system; the multi-directional vibration motor further includes a peripheral magnetic ring fixed to the housing and having an annular shape, the peripheral magnetic ring surrounding the coil unit and spaced apart from the coil unit, an inner side of the peripheral magnetic ring having the same magnetic pole as a side of the magnetic steel system adjacent thereto facing the inner side of the peripheral magnetic ring so as to generate a damping force for inhibiting the motion of the vibration unit; The peripheral magnetic rings are made of a plurality of magnetic steels, each of which is symmetrical in pairs, and the peripheral magnetic rings include two first magnetic rings respectively installed on opposite sides of the coil unit along a second direction and two second magnetic rings respectively installed on opposite sides of the coil unit along a third direction, the second direction and the third direction both being distributed on the same plane and both being perpendicular to the first direction.

2. 2. The multi-directional vibration motor according to claim 1, wherein the magnetic steel system includes a central magnetic steel and a central magnetic ring that interact with the coil unit to provide a driving force, the central magnetic steel has a cylindrical shape, the central magnetic ring has an annular shape and is installed surrounding the central magnetic steel, the central magnetic steel and the central magnetic ring are both magnetized along the first direction, and one end of the central magnetic steel has a magnetic pole opposite to that of an adjacent end of the central magnetic ring.

3. 3. The multi-directional vibration motor according to claim 2, wherein the vibration unit includes a mass block having an annular shape, the mass block surrounding the outside of the central magnetic ring and fixedly connected to the central magnetic ring.

4. 2. The multi-directional vibration motor according to claim 1, wherein the magnetization direction of the peripheral magnetic rings includes any one of radial magnetization, axial magnetization, and unidirectional magnetization, and the unidirectional magnetization is such that the first magnetic ring is magnetized along the second direction, and the second magnetic ring is magnetized along the third direction.

5. The multi-directional vibration motor according to claim 1 , wherein the second direction and the third direction are mutually perpendicular.

6. The housing includes a lower cover plate, a side wall extending from a periphery of the lower cover plate, and an upper cover plate disposed to cover the side wall and facing the lower cover plate, the lower cover plate, the side wall and the upper cover plate together surrounding the storage space, 2. The multi-directional vibration motor according to claim 1, wherein the coil unit includes a first coil and a second coil accommodated in the accommodation space, the first coil is fixed to the lower cover plate, and the second coil is fixed to the upper cover plate, and the first coil and the second coil are arranged to form an angle between the arrangement directions.

7. The multi-directional vibration motor according to claim 6, characterized in that there are two first coils, the current directions of the two first coils are opposite to each other, there are two second coils, the current directions of the two second coils are opposite to each other, and both the first coil and the second coil are track-shaped or semicircular.

8. 7. The multi-directional vibration motor as claimed in claim 6, wherein the lower cover plate and the upper cover plate are both made of magnetic conductive material.

9. 2. The multi-directional vibration motor according to claim 1, wherein the vibration unit further includes two flat plates respectively installed on both sides of the magnetic steel system facing the first direction, and the multi-directional vibration motor further includes a slide plate fixed to the housing, the slide plate being located between the peripheral magnetic ring and the coil unit, the side of the slide plate adjacent to the flat plate, the side of the peripheral magnetic ring adjacent to the flat plate, and the side of the coil unit adjacent to the flat plate are flush with each other, and are all spaced apart from the flat plate to form a gap.

10. 10. The multi-directional vibration motor of claim 9, wherein the flat plate is made of a non-conductive material and the sliding plate is made of a self-lubricating material.

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