Vibration motor and electronic device

Abstract

The invention discloses a vibration motor and electronic equipment, and relates to the technical field of electronic equipment.The vibration motor comprises a magnet assembly and a driving coil, the magnet assembly comprises two magnets arranged in the first direction, and each magnet is provided with a first magnetic area, a non-magnetic area and a second magnetic area which are sequentially arranged in the second direction; the first direction is perpendicular to the second direction, the magnetizing directions of the two first magnetic areas located on the same side are opposite, the magnetizing directions of the two second magnetic areas located on the same side are opposite, the magnetizing directions of the first magnetic area and the second magnetic area of the same magnet are opposite, and the magnetizing directions of the two magnets are both parallel to the second direction; the driving coil is located on the side, close to the first magnetic area, of the magnet assembly and interacts with the first magnetic area so that the driving coil and the magnet assembly can move relatively in the first direction. According to the technical scheme, magnetic leakage of the vibration motor can be reduced, and the magnetic field utilization rate is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic equipment, and in particular to a vibration motor and electronic equipment. Background Art

[0002] In the prior art, the vibration motor of an electronic device usually includes a magnetic circuit structure and a driving coil. The magnetic circuit structure is responsible for generating a magnetic field, while the driving coil generates a driving force for vibration with the magnetic circuit structure in the magnetic field. However, the traditional magnetic circuit structure design has some limitations, such as high magnetic leakage and low magnetic field utilization, which directly affects the driving force and sensitivity of the vibration device. Summary of the invention

[0003] The main purpose of the present invention is to provide a vibration motor and an electronic device, aiming to reduce magnetic flux leakage of a magnetic circuit structure and improve the utilization rate of a magnetic field.

[0004] To achieve the above object, the vibration motor proposed by the present invention comprises:

[0005] A magnet assembly, comprising two magnets arranged along a first direction, the magnets having a first magnetic region, a non-magnetic region, and a second magnetic region arranged in sequence along a second direction, the first direction and the second direction being arranged perpendicularly, the magnetization directions of the two first magnetic regions on the same side being opposite, the magnetization directions of the two second magnetic regions on the same side being opposite, and the magnetization directions of the first magnetic region and the second magnetic region of the same magnet being opposite, and the magnetization directions of the two magnets being parallel to the second direction; and

[0006] The drive coil is located on a side of the magnet assembly close to the first magnetic area and is arranged together with the magnet assembly along the second direction. The drive coil interacts with the first magnetic area to enable the drive coil and the magnet assembly to move relative to each other along the first direction.

[0007] In one embodiment, the first magnetic region, the non-magnetic region and the second magnetic region are integrally arranged; and / or,

[0008] The first magnetic region, the non-magnetic region and the second magnetic region are made of the same material.

[0009] In one embodiment, the vibration motor further comprises a conductive member, which is disposed on a side of the magnet assembly away from the driving coil and can move relative to the second magnetic area to generate a damping force.

[0010] In one embodiment, the conductive element is configured as a sheet structure; and / or,

[0011] The conductive member is made of copper or soft magnetic material.

[0012] In one embodiment, the magnet assembly further includes a central magnet, wherein the central magnet and the magnets are arranged along a first direction, and the central magnet is located between two of the magnets, and the magnetization direction of the central magnet is parallel to the first direction, and the polarity of the middle portion of the magnet is opposite to the polarity of the adjacent side of the central magnet, and the polarity of the end portion of the magnet is the same as the polarity of the adjacent side of the central magnet.

[0013] In one embodiment, a thickness of the first magnetic region along the second direction is greater than a thickness of the second magnetic region along the second direction.

[0014] In one embodiment, a thickness of the first magnetic region along the second direction is equal to a thickness of the second magnetic region along the second direction.

[0015] In one embodiment, a thickness of the first magnetic region along the second direction is smaller than a thickness of the second magnetic region along the second direction.

[0016] In one embodiment, the two first magnetic regions are arranged to have the same thickness along the second direction; and / or,

[0017] The two second magnetic regions are arranged to have the same thickness along the second direction.

[0018] The present invention also provides an electronic device, comprising the vibration motor as described above.

[0019] The technical solution of the present invention is to set a magnet assembly, wherein the magnet assembly includes two magnets arranged along a first direction, and the magnet has a first magnetic area, a non-magnetic area, and a second magnetic area arranged in sequence along a second direction, and the magnetization directions of the two first magnetic areas on the same side are opposite, so as to help form a closed magnetic flux loop between the two first magnetic areas, so that the effective magnetic flux passing through the drive coil can be more dense, thereby improving the driving ability between the drive coil and the magnet assembly, and the vibration performance can be improved. The magnetization directions of the two second magnetic areas on the same side are opposite, so as to help form a closed magnetic flux loop between the two second magnetic areas, so as to help improve the magnetic density between the two second magnetic areas.

[0020] The magnetization directions of the two magnets are parallel to the second direction. The driving coil is located on the side of the magnet assembly close to the first magnetic area and is arranged with the magnet assembly along the second direction. The driving coil interacts with the first magnetic area so that the driving coil and the first magnetic area move relative to each other along the first direction. The magnetization directions of the first magnetic area and the second magnetic area in the same magnet are oppositely arranged. This arrangement can further regularize the trend of the magnetic flux lines of the first magnetic area and the second magnetic area, so that when the magnet is connected to the driving coil, the magnetic flux lines of the first magnetic area are concentrated to pass through the driving coil vertically, so that after the driving coil is energized, it can generate a greater driving force, thereby improving the driving force, sensitivity and vibration of the electronic device. The non-magnetic area is arranged between the first magnetic area and the second magnetic area, so that the non-magnetic area separates the two adjacent magnet parts, and the non-magnetic area can act as a magnetic conductive plate, thereby further regularizing the trend of the magnetic flux lines of the first magnetic area and the second magnetic area, reducing magnetic leakage, and further improving the driving force, sensitivity and vibration of the electronic device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0022] Figure 1 A schematic structural diagram of a first embodiment of a vibration motor provided by the present invention;

[0023] Figure 2 A schematic structural diagram of a second embodiment of a vibration motor provided by the present invention;

[0024] Figure 3 A schematic structural diagram of a third embodiment of a vibration motor provided by the present invention;

[0025] Figure 4 This is a schematic structural diagram of a fourth embodiment of the vibration motor provided by the present invention.

[0026] Description of Figure Numbers:

[0027] 100, vibration motor; 11, magnet assembly; 111, magnet; 112, first magnetic area; 113, non-magnetic area; 114, second magnetic area; 115, middle magnet; 12, driving coil; 13, conductive member.

[0028] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0031] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0032] The present invention proposes a vibration motor 100 for use in electronic devices, which may be, but are not limited to, mobile phones, laptop computers, tablet computers, personal digital assistants (PDAs), e-book readers, MP3 (Moving Picture Experts Group Audio Layer III) players, MP4 (Moving Picture Experts Group Audio Layer IV) players, wearable devices, navigators, handheld game consoles, etc.

[0033] See also Figure 1 and Figure 4 In one embodiment of the present invention, the vibration motor 100 includes:

[0034] The magnet assembly 11 comprises two magnets 111 arranged along a first direction, the magnet 111 comprises a first magnetic region 112, a non-magnetic region 113 and a second magnetic region 114 arranged in sequence along a second direction, the first direction and the second direction are perpendicular, the two first magnetic regions 112 located on the same side have opposite magnetization directions, the two second magnetic regions 114 located on the same side have opposite magnetization directions, and the first magnetic region 112 and the second magnetic region 114 of the same magnet 111 have opposite magnetization directions, and the magnetization directions of the two magnets 111 are parallel to the second direction; and

[0035] The driving coil 12 is located on one side of the magnet assembly 11 close to the first magnetic area 112 and is arranged along the second direction with the magnet 111 . The driving coil 12 interacts with the first magnetic area 112 to drive the first magnetic area 112 to vibrate back and forth along the first direction.

[0036] The first direction and the second direction are two directions perpendicular to each other. For the sake of convenience, it is assumed that Figures 1 to 4 The left-right direction is the first direction, and the up-down direction is the second direction; the positive direction of the first direction is toward the right side of the vibration motor 100, the negative direction of the first direction is toward the left side of the vibration motor 100, the positive direction of the second direction is toward the upper side of the vibration motor 100, and the negative direction of the second direction is toward the lower side of the vibration motor 100. Figures 1 to 4 The arrows in the magnet assembly 11 in FIG. 1 represent the directions of the magnetic flux lines inside the magnet 111 in one embodiment of the vibration motor 100 .

[0037] The vibration motor 100 has two magnets 111, which are arranged along a first direction, and the magnetization directions of the two first magnetic areas 112 on the same side are opposite, that is, the magnetism of the two magnetic poles of the two first magnetic areas 112 adjacent or opposite to each other is opposite, which helps to form a closed magnetic flux loop between the two first magnetic areas 112, so that the effective magnetic flux passing through the drive coil 12 can be more dense, thereby improving the driving ability between the drive coil 12 and the magnet assembly 11, and further improving the vibration of the vibration device. And because the magnetism of the two magnetic poles of the two first magnetic areas 112 adjacent or opposite to each other is opposite, the two first magnetic areas 112 attract each other during assembly, which facilitates the assembly of the two magnets 111 and reduces the possibility of the magnet 111 accidentally falling off.

[0038] The magnetization directions of the two second magnetic areas 114 on the same side are opposite, that is, the magnetism of the two magnetic poles adjacent or opposite to each other of the two second magnetic areas 114 is opposite, which helps to form a closed magnetic flux loop between the two second magnetic areas 114, which can help to increase the magnetic density between the two second magnetic areas 114, so that the two second magnetic areas 114 can be used to form stronger damping, reduce the braking time between the drive coil 12 and the magnet assembly 11, and give the user a better tactile experience. And because the magnetism of the two magnetic poles adjacent or opposite to each other of the two second magnetic areas 114 is opposite, the two second magnetic areas 114 attract each other during assembly, which facilitates the assembly of the two magnets 111 and reduces the possibility of the magnet 111 falling off accidentally.

[0039] The magnet 111 has a first magnetic region 112, a non-magnetic region 113 and a second magnetic region 114 arranged in sequence along the second direction, and the magnetization directions of the first magnetic region 112 and the second magnetic region 114 in the same magnet 111 are oppositely arranged, that is, the polarities of the two magnetic poles of the adjacent first magnetic region 112 and the second magnetic region 114 that are oppositely arranged (or adjacent) are the same. This arrangement can further regularize the magnetic flux lines of the first magnetic region 112 and the second magnetic region 114, so that when the magnet 111 is connected to the driving coil 12, the magnetic flux lines of the first magnetic region 112 are concentrated to pass through the driving coil 12 approximately vertically, so that after the driving coil 12 is energized, it can generate a greater driving force, thereby improving the driving force, sensitivity and vibration amount of the electronic device. The non-magnetic region 113 is arranged between the first magnetic region 112 and the second magnetic region 114, so that the non-magnetic region 113 separates two adjacent magnetic parts, and the non-magnetic region 113 can act as a magnetic conductive plate, thereby further regulating the magnetic flux lines of the first magnetic region 112 and the second magnetic region 114, reducing leakage magnetic flux, and further improving the driving force, sensitivity and vibration amount of the electronic device.

[0040] The driving coil 12 interacts with the first magnetic area 112 to generate a driving force, so that the driving coil 12 and the first magnetic area 112 move relative to each other in the first direction. Preferably, the driving coil 12 remains stationary, and the driving coil 12 drives the first magnetic area 112 to vibrate back and forth in the first direction, that is, the magnet assembly 11 is configured as a vibrator structure in an electronic device, and the driving coil 12 is configured as a stator structure. Since the overall mass of the magnet assembly 11 is heavy, the weight of the mass block in the electronic device can be reduced, which helps to miniaturize the product. Of course, in other embodiments, the magnet assembly 11 remains stationary, and the driving coil 12 vibrates back and forth in the first direction.

[0041] In this embodiment, the driving coil 12 and the magnet assembly 11 are arranged along the second direction, and the magnetization direction of the first magnetic area 112 and the magnetization direction of the second magnetic area 114 are both parallel to the second direction. That is, the driving coil 12 is located directly below the magnet assembly 11, and the axial direction of the driving coil 12 is parallel to the second direction, and the magnetization direction of the first magnetic area 112 is parallel to the second direction, so that there are enough magnetic lines of force vertically passing through the driving coil 12, further ensuring the driving force, and through the smaller size of the magnet assembly 11, a better driving effect is achieved, which is conducive to product miniaturization.

[0042] In other embodiments, the drive coil 12 may also be misaligned to a certain extent relative to the magnet assembly 11 along the second direction, and / or the axial direction of the drive coil 12 has a certain angle with the second direction; or the magnetization direction of the first magnetic zone 112 and / or the magnetization direction of the second magnetic zone 114 has a certain angle with the second direction.

[0043] In the embodiment of the present invention, the first magnetic region 112, the non-magnetic region 113 and the second magnetic region 114 are integrally arranged; the first magnetic region 112, the non-magnetic region 113 and the second magnetic region 114 are made of the same material. If the first magnetic region 112, the non-magnetic region 113 and the second magnetic region 114 are separately arranged, since the same poles of the first magnetic region 112 and the second magnetic region 114 are arranged close to each other, a large repulsive force will be generated, and the connection is very difficult, which reduces the dimensional accuracy of the vibration motor 100 after the assembly is completed. Therefore, the first magnetic region 112, the non-magnetic region 113 and the second magnetic region 114 are integrally arranged, that is, the first magnetic region 112, the non-magnetic region 113 and the second magnetic region 114 are all part of the magnet 111, rather than separate parts, so as to facilitate the assembly between the first magnetic region 112 and the second magnetic region 114, so that there is no need to set an additional fixing structure to assemble the magnet 111, and the possibility of the first magnetic region 112 and the second magnetic region 114 falling off due to the same pole repulsion is reduced, thereby ensuring the assembly stability of the magnet assembly 11. In actual processing, the non-magnetic area 113 is covered by a magnetic sleeve and other structures, and the first magnetic area 112 and the second magnetic area 114 are magnetized respectively, so as to form the magnet 111, which is convenient for processing, thereby reducing the cost of accessories and labor costs in the assembly process and improving production efficiency. The magnet 111 is made of magnetic material, and the magnetic material can be ferrite, neodymium iron boron, aluminum nickel cobalt, samarium cobalt, etc.

[0044] In other embodiments, the first magnetic region 112, the non-magnetic region 113, and the second magnetic region 114 can also be formed separately. In this case, the first magnetic region 112, the non-magnetic region 113, and the second magnetic region 114 can be assembled by extrusion through a fixed structure. The materials of the first magnetic region 112, the non-magnetic region 113, and the second magnetic region 114 can also be set differently.

[0045] See again Figure 1 and Figure 4 In one embodiment, the vibration motor 100 further includes a conductive member 13, which is disposed on the side of the magnet assembly 11 away from the driving coil 12, and can move relative to the second magnetic area 114 to generate a damping force. Specifically, the conductive member 13 is disposed on the side of the magnet assembly 11 away from the driving coil 12, that is, on the side of the magnet assembly 11 close to the second magnetic area 114, and the conductive member 13 can move relative to the second magnetic area 114. For example, when the conductive member 13 is stationary and the magnet assembly 11 can move relative to the conductive member 13, when the magnet assembly 11 moves to the left, it will be subject to repulsion due to Lenz's law, thereby forming damping; and when the magnet assembly 11 moves to the right, it will also be subject to repulsion due to Lenz's law, thereby also forming damping, thereby shortening the braking time of the magnet assembly 11 in the electronic device, giving the user a better tactile experience. In addition, the conductive member 13 is stationary, and the magnet assembly 11 moves relative to the conductive member 13. The driving force and the damping force can be generated simultaneously only by the movement of the magnet assembly 11, which helps to control the ratio of the driving force and the damping force in the vibration motor 100 and reduce the complexity of the vibration in the vibration motor 100. Of course, in other embodiments, the magnet assembly 11 can also be stationary, and the conductive member 13 can move relative to the magnet assembly 11.

[0046] Preferably, the conductive member 13 and the magnet assembly 11 are also arranged along the second direction, and the magnetization direction of the second magnetic zone 114 is parallel to the second direction. That is, the drive coil 12 is located directly below the magnet assembly 11, and its extension direction is perpendicular to the second direction, and the magnetization direction of the second magnetic zone 114 is parallel to the second direction, so that the comprehensive damping effect obtained by the magnet assembly is parallel to the first direction (horizontal direction), thereby reducing the probability of the magnet assembly offset in the second direction (vertical direction), thereby improving the vibration performance of the magnet assembly, and giving the user a better tactile experience. Of course, in other embodiments, the vertical direction of the conductive member 13 may also be at a certain angle to the second direction, or the magnetization direction of the second magnetic zone 114 may be at a certain angle to the second direction.

[0047] The conductive member 13 may be a sheet structure, a plate structure, a block structure or a ring structure. Furthermore, the conductive member 13 is made of copper or a soft magnetic material. In this way, it is not only highly adaptable to different ambient temperatures and has good response stability, but also does not destroy the magnetic balance inside the vibration motor 100 when the vibration motor 100 is not running because it is non-magnetic.

[0048] Furthermore, the magnetic field strength of the first magnetic region 112 and the magnetic field strength of the second magnetic region 114 can be set in a preset ratio, that is, the magnetic field strength of the first magnetic region 112 and the magnetic field strength of the second magnetic region 114 are adjustable, so that the driving force and the damping force inside the magnet assembly 11 are adjustable, so that it is convenient for designers to balance the driving force and the damping force according to actual product needs. To change the magnetic field strength of the first magnetic region 112 and the magnetic field strength of the second magnetic region 114, the material, magnetic density and size of the first magnetic region 112 and the second magnetic region 114 can be changed.

[0049] When the material and magnetization density of the first magnetic region 112 and the second magnetic region 114 are the same, in one embodiment, the thickness of the first magnetic region 112 along the second direction is greater than the thickness of the second magnetic region 114 along the second direction. Figure 1 and Figure 3 The thickness of the first magnetic region 112 along the second direction is H1, and the thickness of the second magnetic region 114 along the second direction is H2, H1≥H2, that is, at this time, the magnet 111 is configured as a multi-stage asymmetric magnet, and the driving force required in the vibration motor 100 is larger and the damping force is smaller.

[0050] In another embodiment, see Figure 2 and Figure 4 , the thickness of the first magnetic region 112 along the second direction is equal to the thickness of the second magnetic region 114 along the second direction, that is, H1=H2. At this time, the magnet 111 is configured as a multi-stage symmetrical magnet, and the damping force and driving force required in the vibration motor 100 are moderate.

[0051] In another embodiment, the thickness of the first magnetic region 112 along the second direction is less than the thickness of the second magnetic region 114 along the second direction, that is, H1≤H2. In this case, the magnet 111 is configured as a multi-stage asymmetric magnet, and the damping force required in the vibration motor 100 is large, and the driving force is small. That is, in this solution, the magnetic field strength of the first magnetic region 112 and the second magnetic region 114 is adjusted by changing the thickness of the first magnetic region 112 and the second magnetic region 114 along the second direction. In this solution, when the thickness of the first magnetic region 112 and the second magnetic region 114 along the second direction is changed, the total thickness of the magnet 111 along the second direction is not increased, thereby ensuring the miniaturization of the product.

[0052] See also Figure 3 and Figure 4In another embodiment of the present invention, the magnet assembly 11 further includes a middle magnet 115, the middle magnet 115 and the magnet 111 are arranged along the first direction, and the middle magnet 115 is located between the two magnets 111, and the magnetization direction of the middle magnet 115 is parallel to the first direction, and the polarity of the middle part of the magnet 111 is opposite to the polarity of the adjacent side of the middle magnet 115, and the polarity of the end of the magnet 111 is the same as the polarity of the adjacent side of the middle magnet 115. Specifically, the middle magnet 115 is arranged between the two first magnetic regions 112, and the magnetization direction of the middle magnet 115 is parallel to the first direction, and the magnetization directions of the two first magnetic regions 112 are parallel to the second direction, and the magnetization directions are opposite, so that the middle magnet 115 and the two first magnetic regions 112 together form a Halbach Array, thereby further enhancing the magnetic field strength of the magnet assembly 11, achieving the effect of generating the strongest magnetic field with the least amount of magnets, thereby further generating a greater driving force, thereby improving the driving force, sensitivity and vibration of the electronic device, and contributing to the miniaturization of the product. In addition, the middle magnet 115 and the two second magnetic regions 114 also form a Halbach Array together, thereby further enhancing the magnetic field strength of the magnet assembly 11 and generating a greater damping force.

[0053] Refer again Figure 3 and Figure 4 The polarity of the middle portion of the magnet 111 is opposite to the polarity of the adjacent side of the middle magnet 115 , and the polarity of the end portion of the magnet 111 is the same as the polarity of the adjacent side of the middle magnet 115 . Exemplarily, the poles of the two ends of the first magnetic zone 112 and the second magnetic zone 114 of the left magnet 111 that are close to each other (the middle part of the magnet 111) are both S poles, and the poles of the two ends that are far away from each other (the ends of the magnet 111) are both N poles. The poles of the two ends of the first magnetic zone 112 and the second magnetic zone 114 of the right magnet 111 that are close to each other (the middle part of the magnet 111) are both N poles, and the poles of the two ends that are far away from each other (the ends of the magnet 111) are both S poles. The left side of the middle magnet 115 is the N pole, and the right side is the S pole. Therefore, when the two magnets 111 and the middle magnet 115 are spliced ​​together, the middle magnet 115 and the middle part of the magnet 111 attract each other, and the two ends repel each other, thereby offsetting the repulsive force between part of the magnet 111 and the middle magnet 115, thereby reducing the difficulty of assembling the magnets 111 and the middle magnet 115 and reducing the possibility of accidental falling off of the magnet 111. Of course, in other implementations, the positions of the left magnet 111 and the right magnet 111 can be interchanged, and in this case, the middle magnet 115 needs to be flipped accordingly, that is, the left side of the middle magnet 115 is the S pole and the right side is the N pole.

[0054] The middle of the magnet 111 does not refer to the middle position of the magnet 111, but the position where the two ends of the first magnetic region 112 and the second magnetic region 114 are close to each other. If the magnet 111 is a multi-pole symmetrical magnet (H1=H2), the middle of the magnet 111 is exactly located in the middle position of the magnet 111. However, if the magnet 111 is a multi-pole asymmetrical magnet (H1≠H2), the middle of the magnet 111 is offset from the middle position of the magnet 111.

[0055] In order to ensure the effectiveness of the magnetic field strength of the first magnetic area 112 and the second magnetic area 114, in one embodiment, the thickness of the two first magnetic areas 112 along the second direction is set to be the same, and the thickness of the two second magnetic areas 114 along the second direction is set to be the same. That is, the two magnets 111 are symmetrically arranged, which, on the one hand, reduces the possibility of the magnetism of the two first magnetic areas 112 and / or the magnetism of the two second magnetic areas 114 offsetting each other, and on the other hand, reduces the possibility of magnetic field disorder inside the magnet assembly 11, thereby ensuring the effectiveness of the magnetic field strength of the first magnetic area 112 and the second magnetic area 114.

[0056] The present invention further proposes an electronic device, which includes a vibration motor 100. The specific structure of the vibration motor 100 refers to the above embodiment. Since the electronic device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0057] The above are only exemplary embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings, or directly / indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A vibration motor, characterized in that: include: A magnet assembly, comprising two magnets arranged along a first direction, the magnets having a first magnetic region, a non-magnetic region and a second magnetic region arranged in sequence along a second direction, the first direction and the second direction being perpendicular, the magnetization directions of the two first magnetic regions located on the same side being opposite, the magnetization directions of the two second magnetic regions located on the same side being opposite, and the magnetization directions of the first magnetic region and the second magnetic region of the same magnet being opposite, and the magnetization directions of the two magnets being parallel to the second direction; as well as The driving coil is located on a side of the magnet assembly close to the first magnetic area and is arranged with the magnet assembly along the second direction. The driving coil interacts with the first magnetic area to make the driving coil and the magnet assembly move relative to each other along the first direction.

2. The vibration motor according to claim 1, wherein: The first magnetic region, the non-magnetic region and the second magnetic region are integrally arranged; and / or, The first magnetic region, the non-magnetic region and the second magnetic region are made of the same material.

3. The vibration motor according to claim 1, wherein: The vibration motor further comprises a conductive member, which is arranged on a side of the magnet assembly away from the driving coil and can move relative to the second magnetic area to generate a damping force.

4. The vibration motor according to claim 3, characterized in that The conductive element is configured as a sheet structure; and / or, The conductive member is made of copper or soft magnetic material.

5. The vibration motor according to any one of claims 1 to 4, characterized in that The magnet assembly also includes a central magnet, which is arranged along a first direction with the magnets, and is located between two of the magnets. The magnetization direction of the central magnet is parallel to the first direction, and the polarity of the middle of the magnet is opposite to the polarity of the adjacent side of the central magnet, and the polarity of the end of the magnet is the same as the polarity of the adjacent side of the central magnet.

6. The vibration motor according to claim 1, wherein: A thickness of the first magnetic region along the second direction is greater than a thickness of the second magnetic region along the second direction.

7. The vibration motor according to claim 1, wherein: A thickness of the first magnetic region along the second direction is equal to a thickness of the second magnetic region along the second direction.

8. The vibration motor according to claim 1, wherein: A thickness of the first magnetic region along the second direction is smaller than a thickness of the second magnetic region along the second direction.

9. The vibration motor according to claim 1, wherein: The thicknesses of the two first magnetic regions along the second direction are set to be the same; and / or, The two second magnetic regions are arranged to have the same thickness along the second direction.

10. An electronic device, characterized in that: Comprising a vibration motor as claimed in any one of claims 1 to 9.

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