Vibration motor

Abstract

Provided in the present application is a vibration motor, comprising: a housing having an accommodating space, and guide members, a vibrator assembly and a stator assembly which are accommodated in the accommodating space, wherein the stator assembly comprises a coil unit and two first magnetic spring units, which are arranged in a first direction and are respectively fixed to the housing; the vibrator assembly is slidably connected to the guide members, and comprises a magnetic steel unit and two second magnetic spring units; the magnetic steel unit runs through the coil unit; the two second magnetic spring units are arranged so as to be spaced apart between the two first magnetic spring units in the first direction and are arranged corresponding to the two first magnetic spring units on a one-to-one basis to form a magnetic repulsive force; and after being energized, the coil unit pushes the vibrator assembly to vibrate in the first direction, and the magnetic repulsive force between the two first magnetic spring units and the corresponding second magnetic spring units provides a restoring force for the vibrator assembly, such that the vibrator assembly reciprocates in the first direction. The present application prolongs the service life of the vibration motor, increases the vibration magnitude, and improves the vibration performance and reliability.

Description

A vibration motor TECHNICAL FIELD

[0001] The present application relates to the field of motor, in particular to a vibration motor. BACKGROUND

[0002] The existing vibration motor adopts spring to connect the vibrator to form a vibration system, the coil is located below the magnetic steel of the vibrator, and the energized coil generates driving force in the magnetic field to make the vibrator move. However, the spring has deformation stress during movement, and the greater the movement stroke, the greater the stress, which will lead to spring fracture when reaching the upper limit of spring material life, and further cause the vibration system to fail.

[0003] Therefore, it is necessary to provide a vibration motor without the deformation stress problem of traditional spring material. TECHNICAL PROBLEM

[0004] The purpose of the present application is to provide a vibration motor to solve the technical problem that the deformation stress of the spring in the prior art leads to short service life of the vibration motor. TECHNICAL SOLUTION

[0005] The technical scheme of the present application is as follows:

[0006] In a first aspect, the present application provides a vibration motor, comprising:

[0007] a housing with a receiving space, and a guide, a vibrator assembly and a stator assembly received in the receiving space;

[0008] The guide is fixed to the housing;

[0009] The stator assembly comprises a coil unit and two first magnetic spring units arranged along a first direction and fixed to the housing respectively, and the two first magnetic spring units are symmetrically arranged on both sides of the coil unit;

[0010] The vibrator assembly is slidably connected to the guide along the first direction, and the vibrator assembly comprises a magnet unit and two second magnetic spring units arranged along the first direction and fixed integrally, the magnet unit is arranged through the coil unit, and the two second magnetic spring units are symmetrically arranged on both sides of the magnet unit and are arranged along the first direction and are arranged between the two first magnetic spring units;

[0011] The first magnetic spring unit and the second magnetic spring unit are magnetized along a second direction perpendicular to the first direction, and the magnetization directions of the two are opposite;

[0012] The coil unit is energized to push the vibrator assembly to vibrate along the first direction, and repulsive magnetic force formed between the first magnetic spring unit and the corresponding second magnetic spring unit provides a restoring force for the vibrator assembly to reciprocate along the first direction.

[0013] Preferably, the second magnetic spring unit comprises a second magnetic steel part, the first magnetic spring unit comprises two first magnetic steel parts arranged along the second direction and respectively located on two sides of the second magnetic steel part, and the two first magnetic steel parts are respectively arranged with the same polarity as the second magnetic steel part.

[0014] Preferably, the magnetic unit comprises at least two third magnetic steel parts arranged along the first direction and a fourth magnetic steel part arranged between adjacent two third magnetic steel parts, the third magnetic steel part and the fourth magnetic steel part are fixed and respectively magnetized along the first direction, and the third magnetic steel part is arranged with the same polarity as the adjacent fourth magnetic steel part; the coil unit comprises at least two coil parts arranged along the first direction, and the coil part surrounds the end of the third magnetic steel part and the adjacent fourth magnetic steel part.

[0015] Preferably, the magnetic unit is integrally magnetized, or the magnetic unit is separately magnetized.

[0016] Preferably, the magnetic unit further comprises a soft magnetic part corresponding to the coil part, the soft magnetic part is fixed between adjacent third magnetic steel part and fourth magnetic steel part, and is surrounded by the corresponding coil part.

[0017] Preferably, in the case that the coil unit is not energized, the soft magnetic part is located in the middle of the corresponding coil part.

[0018] Preferably, the vibrator assembly further comprises a first counterweight and / or a second counterweight, wherein the first counterweight is connected to one end of the second magnetic spring unit away from the magnetic unit, and the second counterweight is connected between the second magnetic spring unit and the magnetic unit.

[0019] Preferably, the guide comprises two guide sleeves, the two guide sleeves are symmetrically arranged on both sides of the coil unit along the first direction, and the guide sleeves are located between the first magnetic spring unit and the coil unit, and the vibrator assembly is slidably arranged in the two guide sleeves along the first direction.

[0020] Preferably, the vibrator assembly further comprises a clamping plate slidably connected with the guide, and the clamping plate is wrapped outside the magnetic unit and the two second magnetic spring units along the first direction. Advantages

[0021] The application has the advantages that the vibration motor of the application has the vibrator assembly slidably connected to the guide member in the first direction, the vibrator assembly is supported in the receiving space through the guide member, a fixed position of movement of the vibrator assembly is provided, the vibrator assembly reciprocates in the guide member in the first direction, the stability of the vibration motor is further improved, the problem that the vibrator assembly loses support due to failure or falling of the traditional spring material is solved, and the vibration motor is more reliable; the coil unit drives the vibrator assembly to vibrate in the first direction after being powered, repulsive magnetic force is formed between the two second magnetic spring units and the corresponding first magnetic spring units, and the two second magnetic spring units are arranged in the first direction and spaced between the two first magnetic spring units, during vibration of the vibrator assembly in the first direction, the greater the vibration displacement of the vibrator assembly, the closer one of the second magnetic spring units to the corresponding first magnetic spring unit, and the greater the repulsive magnetic force between the two, so that the repulsive magnetic force between the two first magnetic spring units and the corresponding second magnetic spring units can provide effective restoring force for the vibrator assembly, ensuring that the vibrator assembly can reciprocate in the first direction, and the first magnetic spring unit does not occupy the design size in the first direction, solving the problem of deformation stress of the traditional spring material, improving the service life of the vibration motor, having a larger movement stroke and a larger vibration amount, and improving the vibration performance and reliability. BRIEF DESCRIPTION OF DRAWINGS

[0022] FIG. 1 is a top view of the vibration motor of the application.

[0023] FIG. 2 is a front view of the vibration motor of the application.

[0024] FIG. 3 is a perspective view of the vibration motor of the first embodiment with part of the shell removed.

[0025] FIG. 4 is a cross-sectional view of A-A of FIG. 1 in the first embodiment.

[0026] FIG. 5 is a first state diagram of the cross-sectional view of B-B of FIG. 2.

[0027] FIG. 6 is a perspective view of the vibration motor of the second embodiment with part of the shell removed.

[0028] FIG. 7 is a perspective view of the vibration motor of FIG. 6 with the coil unit, the guide member, and part of the clamping plate removed.

[0029] FIG. 8 is a second state diagram of the cross-sectional view of B-B of FIG. 2.

[0030] FIG. 9 is a perspective view of the vibration motor of the third embodiment with part of the shell removed.

[0031] FIG. 10 is a perspective view of the vibration motor of FIG. 9 with the coil unit, the guide member, and part of the clamping plate removed.

[0032] Fig. 11 is a third state schematic view of the B-B section of Fig. 2. Embodiments of the present application

[0033] The present application is further described below in conjunction with the accompanying drawings and embodiments.

[0034] The embodiment of the present application provides a vibrating motor 10, which comprises a shell 1, a vibrator assembly 2, a stator assembly 3 and a guide, please refer to Figs. 1-11. The shell 1 has a receiving space 101. The guide, the vibrator assembly 2 and the stator assembly 3 are respectively received in the receiving space 101. The guide is fixed to the shell 1. The stator assembly 3 comprises a coil unit 301 and two first magnetic spring units 302, the coil unit 301 and the two first magnetic spring units 302 are arranged along a first direction, and the coil unit 301 and the two first magnetic spring units 302 are respectively fixed to the shell 1, and the two first magnetic spring units 302 are symmetrically arranged on two sides of the coil unit 301. The vibrator assembly 2 is slidably arranged in the guide along the first direction, and the vibrator assembly 2 comprises a magnetic piece unit 201 and two second magnetic spring units 202. The magnetic piece unit 201 is arranged in the coil unit 301. The magnetic piece unit 201 and the two second magnetic spring units 202 are arranged along the first direction and fixed as a whole, and the two second magnetic spring units 202 are symmetrically arranged on two sides of the magnetic piece unit 201. The two second magnetic spring units 202 are arranged along the first direction and spaced between the two first magnetic spring units 302. The first magnetic spring unit 302 and the second magnetic spring unit 202 are magnetized along a second direction perpendicular to the first direction, and the magnetization directions of the first magnetic spring unit 302 and the second magnetic spring unit 202 are opposite. The coil unit 301 drives the vibrator assembly 2 to vibrate along the first direction after being electrified, and the magnetic repulsion force between the two first magnetic spring units 302 and the corresponding second magnetic spring units 202 provides a restoring force for the vibrator assembly 2, so that the vibrator assembly 2 reciprocates along the first direction.

[0035] In the embodiment of the present application, please refer to Figure 4, the vibrator assembly 2 is slidably arranged in the guide along the first direction, the vibrator assembly 2 is supported in the accommodation space 101 by the guide, the vibrator assembly 2 can be provided with a fixed position of movement, so that the vibrator assembly 2 reciprocates in the guide along the first direction, further improving the stability of the vibration motor, solving the problem that the vibrator assembly 2 loses support due to the failure or falling off of the traditional spring material, and being more reliable. The coil unit 301 pushes the vibrator assembly 2 to vibrate along the first direction after being energized, repulsive force is formed between the two second magnetic spring units 202 and the corresponding first magnetic spring units 302, and the two second magnetic spring units 202 are arranged in the first direction and spaced between the two first magnetic spring units 302. During the vibration of the vibrator assembly 2 along the first direction, the greater the vibration displacement of the vibrator assembly 2, the closer one of the second magnetic spring units 202 to the corresponding first magnetic spring unit 302, and the greater the magnetic repulsion between them. The magnetic repulsion between the two first magnetic spring units 302 and the corresponding second magnetic spring units 202 can provide effective restoring force for the vibrator assembly 2, ensuring that the vibrator assembly 2 can reciprocate along the first direction. The first magnetic spring unit 302 and the second magnetic spring unit 202 cooperate to form a magnetic spring system, replacing the traditional motor spring. Moreover, the first magnetic spring unit 302 does not occupy the design size in the first direction, which not only solves the problem of large deformation stress and spring fracture during the movement of the traditional motor spring, improves the service life of the vibration motor 10, but also has a larger movement stroke and a larger vibration amount, and improves the vibration performance and reliability of the vibration motor 10.

[0036] In some preferred embodiments, please refer to Figures 3, 4, 6, 7, 9 and 10, each second magnetic spring unit 202 includes a second magnetic steel part 2021. Each first magnetic spring unit 302 includes two first magnetic steel parts 3021. The two first magnetic steel parts 3021 in the same first magnetic spring unit 302 are arranged along the second direction. Moreover, the two first magnetic steel parts 3021 in the same first magnetic spring unit 302 are symmetrically arranged on both sides of the corresponding second magnetic steel part 2021, so that the second magnetic steel part 2021 is more balanced and stable under stress, further improving the stability of the vibration motor 10. Moreover, the two first magnetic steel parts 3021 in the same first magnetic spring unit 302 are respectively arranged with the same polarity opposite to the corresponding second magnetic steel part 2021, utilizing the same pole repulsion principle to generate repulsive force, forming a magnetic spring system, replacing the traditional spring, so that the first magnetic spring unit 302 can provide restoring force for the vibrator assembly 2.

[0037] In some embodiments, referring to one embodiment shown in FIGS. 3-5 and another embodiment shown in FIGS. 9-11, the first direction is the left-right direction shown in FIGS. 3, 4, 9 and 10, and the second direction is the up-down direction shown in FIGS. 3-5 and 9-11. As shown in FIGS. 3 and 4 and FIGS. 9 and 10, the two first magnetic steel parts 3021 in the same first magnetic spring unit 302 are symmetrically arranged on the upper and lower sides of the corresponding second magnetic steel part 2021, and the magnetization directions of the first magnetic steel part 3021 and the second magnetic steel part 2021 are up-down magnetization.

[0038] In some embodiments, referring to one embodiment shown in FIGS. 6-8, the first direction is the left-right direction shown in FIGS. 6 and 7, and the second direction is the front-back direction shown in FIGS. 6 and 7 and the left-right direction shown in FIG. 8. It can be understood that, since FIG. 8 is a B-B sectional view of FIG. 2, the left-right direction of FIG. 8 is the front-back direction of FIGS. 6 and 7. As shown in FIGS. 6 and 7, the two first magnetic steel parts 3021 in the same first magnetic spring unit 302 are symmetrically arranged on the front and back sides of the corresponding second magnetic steel part 2021, and the magnetization directions of the first magnetic steel part 3021 and the second magnetic steel part 2021 are front-back magnetization.

[0039] In some examples, the first magnetic steel part 3021 is a permanent magnetic material, which has strong magnetic ability, good stability, long service life and high energy efficiency. The second magnetic steel part 2021 is also a permanent magnetic material, which has strong magnetic ability, good stability, long service life and high energy efficiency.

[0040] As an example, the permanent magnetic material can be a neodymium iron boron material. It can be understood that the permanent magnetic material can also be other permanent magnetic materials, which are not described herein.

[0041] In some preferred embodiments, referring to FIG. 4 and FIG. 7, the magnetic steel unit 201 comprises a third magnetic steel part 2011 and a fourth magnetic steel part 2012. The third magnetic steel part 2011 is at least two, and all the third magnetic steel parts 2011 are arranged in the first direction. The fourth magnetic steel part 2012 is at least one, and one fourth magnetic steel part 2012 is arranged between every two third magnetic steel parts 2011, that is, the fourth magnetic steel part 2012 is arranged between the adjacent two third magnetic steel parts 2011. The fourth magnetic steel part 2012 and the third magnetic steel part 2011 are fixed as a whole, the third magnetic steel part 2011 and the fourth magnetic steel part 2012 are magnetized in the first direction respectively, and the third magnetic steel part 2011 and the adjacent fourth magnetic steel part 2012 are arranged in the same magnetic pole, thereby generating a strong magnetic field. The coil unit 301 comprises at least two coil parts 3011, all the coil parts 3011 are arranged in the first direction, and each coil part 3011 surrounds the end of the third magnetic steel part 2011 and the adjacent fourth magnetic steel part 2012. The third magnetic steel part 2011 and the fourth magnetic steel part 2012 generate a magnetic field, and the coil part 3011 generates a driving force in the magnetic field after being electrified, thereby driving the vibrator assembly 2 to vibrate in the first direction.

[0042] In some examples, the third magnetic steel part 2011 is a permanent magnetic material, which has strong magnetic ability, good stability, long service life and high energy efficiency. The fourth magnetic steel part 2012 is a permanent magnetic material, which has strong magnetic ability, good stability, long service life and high energy efficiency.

[0043] As an example, the permanent magnetic material can be a neodymium iron boron material. It can be understood that the permanent magnetic material can also be other permanent magnetic materials, which are not described here.

[0044] In some examples, referring to the example shown in FIG. 4 and the example shown in FIG. 7, the magnetic steel unit 201 includes two third magnetic steel portions 2011 and one fourth magnetic steel portion 2012, the two third magnetic steel portions 2011 are arranged in the first direction with a spacing, the fourth magnetic steel portion 2012 is arranged between the two third magnetic steel portions 2011, and the fourth magnetic steel portion 2012 is fixed with the two third magnetic steel portions 2011. The two third magnetic steel portions 2011 and the fourth magnetic steel portion 2012 are magnetized in the first direction respectively, and the two third magnetic steel portions 2011 are arranged with the same magnetic pole of the fourth magnetic steel portion 2012, thereby generating a strong magnetic field. The coil unit 301 includes two coil portions 3011, the two coil portions 3011 are arranged in the first direction, one coil portion 3011 surrounds the end of one third magnetic steel portion 2011 and the fourth magnetic steel portion 2012, and the other coil portion 3011 surrounds the end of the other third magnetic steel portion 2011 and the fourth magnetic steel portion 2012. The two third magnetic steel portions 2011 and the fourth magnetic steel portion 2012 generate a magnetic field, and the coil portion 3011 generates a driving force in the magnetic field after being energized, thereby driving the vibrator assembly 2 to vibrate in the first direction.

[0045] It can be understood that the number and size of the third magnetic steel portion 2011, the fourth magnetic steel portion 2012, and the coil portion 3011 can be determined according to the size of the vibration motor 10, and the number and size of the third magnetic steel portion 2011, the fourth magnetic steel portion 2012, and the coil portion 3011 can be increased or decreased according to specific conditions.

[0046] In some examples, the magnetic steel unit 201 is integrally magnetized, referring to FIG. 10, that is, the third magnetic steel portion 2011 and the fourth magnetic steel portion 2012 are integrally magnetized, which can simplify the assembly process and improve production efficiency.

[0047] In some examples, the magnetic steel unit 201 is separately magnetized, referring to the example shown in FIG. 4 and the example shown in FIG. 7, that is, the third magnetic steel portion 2011 and the fourth magnetic steel portion 2012 are separately magnetized, which has high flexibility and is convenient for maintenance and replacement of parts.

[0048] Optionally, referring to FIG. 4 and FIG. 7, the magnetic steel unit 201 can further include at least two soft magnetic portions 2013. The soft magnetic portion 2013 can be arranged one-to-one with the coil portion 3011. The soft magnetic portion 2013 is fixed between the adjacent third magnetic steel portion 2011 and the fourth magnetic steel portion 2012, and the soft magnetic portion 2013 is surrounded by the corresponding coil portion 3011. The third magnetic steel portion 2011 and the fourth magnetic steel portion 2012 can generate a magnetic field, the coil portion 3011 can generate a driving force in the magnetic field after being energized, and the soft magnetic portion 2013 can enhance the magnetic field, thereby making the driving force larger.

[0049] It can be understood that the soft magnetic part 2013 is made of soft magnetic material. As an example, the soft magnetic material can be carbon steel material, or the soft magnetic material can be iron-cobalt material, or the soft magnetic material can be amorphous soft magnetic material, or the soft magnetic material can be nanocrystalline soft magnetic material, or the soft magnetic material can be other soft magnetic material, which is not described here.

[0050] As a preferred embodiment, please refer to FIG. 4, in the case of no power supply to the coil unit 301, that is, in the initial state, the vibrator assembly 2 is in the balanced state, and the soft magnetic part 2013 is located in the middle of the corresponding coil part 3011, at this time, the magnetic field can be maximally utilized to generate greater driving force.

[0051] In some preferred embodiments, the vibrator assembly 2 can also include a first counterweight 203 and / or a second counterweight 204. Please refer to FIG. 4, FIG. 7 and FIG. 10, wherein the first counterweight 203 is connected to the end of the second magnetic spring unit 202 away from the magnetic pin unit 201, and the second counterweight 204 is connected between the second magnetic spring unit 202 and the magnetic pin unit 201. The first counterweight 203 can provide greater weight for the vibrator assembly 2 to improve the vibration of the vibration motor 10. Similarly, the second counterweight 204 can also provide greater weight for the vibrator assembly 2 to improve the vibration of the vibration motor 10.

[0052] In some examples, please refer to FIG. 4, FIG. 7 and FIG. 10, the vibrator assembly 2 simultaneously includes the first counterweight 203 and the second counterweight 204. The first counterweight 203 has two, one of which is connected to the end of one of the second magnetic spring units 202 away from the magnetic pin unit 201, and the other first counterweight 203 is connected to the end of the other second magnetic spring unit 202 away from the magnetic pin unit 201. The second counterweight 204 has two, one of which is connected between one of the second magnetic spring units 202 and the magnetic pin unit 201, and the other second counterweight 204 is connected between the other second magnetic spring unit 202 and the magnetic pin unit 201. The first counterweight 203 and the second counterweight 204 can provide greater weight for the vibrator assembly 2 to improve the vibration of the vibration motor 10.

[0053] It can be understood that in other embodiments, the vibrator assembly 2 can only include the first counterweight 203, or the vibrator assembly 2 can only include the second counterweight 204, or the vibrator assembly 2 can not include any counterweight, which can be set according to actual needs, which is not described here.

[0054] In some preferred embodiments, referring to FIG. 3, FIG. 4, FIG. 6 and FIG. 9, the guide comprises two guide sleeves 4, which are symmetrically arranged on both sides of the coil unit 301 in the first direction, and the guide sleeves 4 are located between the first magnetic spring unit 302 and the coil unit 301. The vibrator assembly 2 is slidably arranged in the two guide sleeves 4, which not only does not increase the size of the vibration motor, but also provides a fixed position for the movement of the vibrator assembly 2, so that the vibrator assembly 2 reciprocates in the first direction in the guide sleeves 4, further improving the stability of the vibration motor 10.

[0055] As an embodiment, referring to FIG. 3, FIG. 4, FIG. 6 and FIG. 9, the two guide sleeves 4 are fixed to the shell 1, one of the guide sleeves 4 is located between one of the first magnetic spring units 302 and one of the coil units 301, and the other guide sleeve 4 is located between the other first magnetic spring unit 302 and the other coil unit 301. The vibrator assembly 2 is simultaneously arranged in the two guide sleeves 4. The two guide sleeves 4 can simultaneously provide a fixed position for the movement of the vibrator assembly 2, so that the vibrator assembly 2 reciprocates in the first direction in the two guide sleeves 4, further improving the stability of the vibration motor 10.

[0056] As an example, the guide sleeve 4 can be made of plastic or alloy and other wear-resistant materials. It can be understood that the guide sleeve 4 can also be made of other wear-resistant materials.

[0057] In other embodiments, the guide can also be a guide rod, or the guide can also be a slide rail, or the guide can also be other guide structures, which can be set according to actual conditions, and will not be repeated here.

[0058] In some preferred embodiments, referring to FIG. 4, FIG. 5, FIG. 8 and FIG. 11, the vibrator assembly 2 further comprises a clamping plate 205, the clamping plate 205 is slidably connected with the guide, and the magnetic unit 201 and the second magnetic spring unit 202 can be fixedly covered in the clamping plate 205. The clamping plate 205 can be responsible for friction contact with the guide, protect the vibrator assembly 2, avoid friction between the magnetic unit 201 and the second magnetic spring unit 202 and the stator assembly 3, thereby protecting the magnetic unit 201 and the second magnetic spring unit 202, avoiding damage to the magnetic unit 201 and the second magnetic spring unit 202 during movement, and further improving the service life of the vibration motor 10.

[0059] As an example, the clamping plate 205 can be made of non-magnetic material.

[0060] It can be understood that, referring to FIG. 4, in the case that the vibrator assembly 2 comprises the first counterweight 203 and / or the second counterweight 204, the clamping plate 205 can also at least partially cover the first counterweight 203 and / or the second counterweight 204, so as to protect the first counterweight 203 and / or the second counterweight 204.

[0061] As an implementation, the vibration motor 10 can further comprise a circuit board, which is electrically connected with the coil unit 301 to supply power to the coil unit 301. As an example, the circuit board can be at least partially accommodated in the accommodation space 101, so as to protect the circuit board and make the electrical connection relationship between the circuit board and the coil unit 301 more stable, and make the structure of the vibration motor 10 more stable.

[0062] The above only describes the implementation of the present application, and it should be pointed out that, for those skilled in the art, improvements can be made without departing from the inventive concept of the present application, but these all belong to the protection scope of the present application.

Claims

1. A vibration motor, characterized in that, include: A housing having a receiving space, and a guide, an oscillator assembly, and a stator assembly housed within the receiving space; The guide member is fixed to the housing; The stator assembly includes a coil unit arranged along a first direction and fixed to the housing, and two first magnetic spring units, the two first magnetic spring units being symmetrically arranged on both sides of the coil unit; The oscillator assembly is slidably connected to the guide along the first direction. The oscillator assembly includes a magnet unit and two second magnetic spring units that are arranged and fixed together along the first direction. The magnet unit passes through the coil unit. The two second magnetic spring units are symmetrically arranged on both sides of the magnet unit and spaced apart between the two first magnetic spring units along the first direction. Both the first magnetic spring unit and the second magnetic spring unit are magnetized along a second direction perpendicular to the first direction, and their magnetization directions are opposite. When the coil unit is energized, it drives the oscillator assembly to vibrate along the first direction. The magnetic repulsion force formed between the two first magnetic spring units and the corresponding second magnetic spring unit provides a restoring force for the oscillator assembly, so that the oscillator assembly reciprocates along the first direction.

2. The vibration motor as described in claim 1, characterized in that, The second magnetic spring unit includes a second magnet portion, and the first magnetic spring unit includes two first magnet portions disposed along a second direction and located on both sides of the second magnet portion, wherein the two first magnet portions are disposed opposite to the magnetic poles of the second magnet portion in the same polarity.

3. The vibration motor as described in claim 1, characterized in that, The magnet unit includes at least two third magnet portions spaced apart along the first direction and a fourth magnet portion disposed between two adjacent third magnet portions. The third magnet portions and the fourth magnet portions are fixed and magnetized along the first direction, and the magnetic poles of the third magnet portions and the adjacent fourth magnet portions are arranged with the same polarity. The coil unit includes at least two coil portions arranged along the first direction, and the coil portions surround the ends of the third magnet portions and the adjacent fourth magnet portions.

4. The vibration motor as described in claim 3, characterized in that, The magnet unit is magnetized as a single unit, or the magnet unit is magnetized separately.

5. The vibration motor as described in claim 3, characterized in that, The magnet unit also includes a soft magnetic part that is provided in a one-to-one correspondence with the coil part. The soft magnetic part is fixed between the adjacent third magnet part and the fourth magnet part and is surrounded within the corresponding coil part.

6. The vibration motor as described in claim 5, characterized in that, When the coil unit is not energized, the soft magnetic part is located in the middle of the corresponding coil part.

7. The vibration motor as described in claim 1, characterized in that, The oscillator assembly further includes a first counterweight and / or a second counterweight, wherein the first counterweight is connected to the end of the second magnetic spring unit away from the magnet unit, and the second counterweight is connected between the second magnetic spring unit and the magnet unit.

8. The vibration motor as described in claim 1, characterized in that, The guide includes two guide sleeves, which are symmetrically arranged on both sides of the coil unit along the first direction. The guide sleeves are located between the first magnetic spring unit and the coil unit, and the oscillator assembly is slidably inserted through the two guide sleeves along the first direction.

9. The vibration motor as described in claim 1, characterized in that, The oscillator assembly also includes a clamping plate slidably connected to the guide member, the clamping plate covering the magnet unit and the two second magnetic spring units along the first direction.

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