Double-magnetic-steel flat motor

Abstract

The embodiment of the utility model relates to the technical field of motors, in particular to a double-magnetic-steel flat motor. According to the utility model, the first magnetic ring and the second magnetic ring are arranged in the casing, the first magnetic ring and the second magnetic ring are respectively arranged in the first groove and the second groove, the first magnetic ring is in interference connection with the first boss, and the second magnetic ring is in interference connection with the second boss. According to the utility model, the installation of the magnetic steel and the casing is canceled and the magnetic steel and the casing are fixed through glue, the magnetic steel is in interference fit with the bosses, and the first boss corresponds to the second boss, so that the concentricity of the magnetic steel and the upper casing is ensured, the N poles and the S poles of the first magnetic ring and the second magnetic ring are kept in a vertical state, and the consistency of products is ensured. Moreover, the first magnetic ring and the second magnetic ring can be connected with the casing through the first boss and the second boss respectively, a circuit is closed, and interference of antenna radio frequency is reduced.

Description

Technical Field

[0001] The embodiments of the present utility model relate to the technical field of motors, and particularly to a dual-magnet flat motor. Background Art

[0002] At present, the flat motors on the market all use a single magnet to drive the motor, with a relatively high starting voltage and a long response time, and can only meet the vibration function of daily mobile phone incoming call reminders. With the current application of haptic feedback, the flat motor takes about 150 ms to fully start, which gives a sense of lag, and it cannot work at low voltages, thus unable to achieve low-vibration scenarios. The torque and power of the motor rotor driven by a single magnet are small, and foreign objects will be worn out from the bearing and shaft during the use of the product, which will increase the running resistance of the motor and thus reduce the service life of the motor.

[0003] To solve the above problems, dual-magnet driven motors have emerged on the market, that is, two magnets are built into the motor to increase the torque and power of the motor and solve the problems existing in single magnets. However, in the dual-magnet motor, since the two magnets are independently installed, the concentricity of the magnet installation is poor; the installation method is fixed by glue, and there will be a layer of glue about 0.05 mm thick separating the magnet and the housing, and the magnet and the housing cannot be fully conducted, resulting in the magnetic field not forming an electromagnetic field closed circuit, thus affecting the radio frequency signal of the antenna and unable to exert the maximum utility of the motor. Summary of the Utility Model

[0004] In view of the above problems, the embodiments of the present utility model provide a dual-magnet flat motor, which solves the problems that since the two magnets are independently installed, the concentricity of the magnet installation is poor; the installation method is fixed by glue, and there will be a layer of glue about 0.05 mm thick separating the magnet and the housing, and the magnet and the housing cannot be fully conducted, resulting in the magnetic field not forming an electromagnetic field closed circuit, thus affecting the radio frequency signal of the antenna and unable to exert the maximum utility of the motor.

[0005] In the first aspect,

[0006] The present utility model provides a dual-magnet flat motor, comprising:

[0007] A housing, including a first boss and a second boss respectively arranged in the middle of the upper and lower ends of the housing, the first boss and the second boss are arranged opposite to each other; the first boss and the housing enclose a first groove, and the second boss and the housing enclose a second groove;

[0008] A magnet assembly, including a first magnetic ring and a second magnetic ring, the first magnetic ring is fixed in the first groove and is in interference connection with the outside of the first boss, and the second magnetic ring is fixed in the second groove and is in interference connection with the outside of the second boss; ]

[0009] and a rotating shaft assembly, which is connected and arranged between the first boss and the second boss, and the rotating shaft assembly rotates under the magnetic field of the magnet assembly.

[0010] In some optional embodiments, the housing includes a lower housing and an upper housing. The first boss and the first groove are provided on the lower housing, and the second boss and the second groove are provided on the upper housing.

[0011] In some optional embodiments, the upper housing is a cylindrical structure with an opening on one side, and a first connecting portion is provided at the opening of the upper housing; the lower housing includes a housing main body and an extension portion connected to one end of the housing main body; a second connecting portion that is snap-fitted with the first connecting portion is provided on the circumferential side of the housing main body, and the lower housing and the upper housing are snap-connected to form an accommodation space.

[0012] In some optional embodiments, at least one first connecting protrusion is provided at the bottom of the first groove. When the first magnetic ring is installed in the first groove, the bottom of the first magnetic ring abuts against the first connecting protrusion.

[0013] In some optional embodiments, at least one connecting protrusion is provided at the bottom of the second groove. When the second magnetic ring is installed in the second groove, the bottom of the second magnetic ring abuts against the first connecting protrusion.

[0014] In some optional embodiments, an adhesive layer is further connected between the bottom of the first magnetic ring and the bottom of the first groove, and an adhesive layer is further connected between the bottom of the second magnetic ring and the bottom of the second groove.

[0015] In some optional embodiments, the first boss is provided with a mounting hole, and the second boss is provided with a mounting groove.

[0016] In some optional embodiments, the rotating shaft assembly includes a core shaft, a bearing, a fixing plate, a commutator, a coil, and an oscillator.

[0017] The core shaft is connected and arranged between the mounting hole and the mounting groove. The bearing is sleeved on the core shaft, and the fixing plate and the commutator are fixedly connected to the outside of the bearing.

[0018] Two first through grooves are provided on the surface of the fixing plate, and the two coils are respectively fixed in the two first through grooves.

[0019] A second through groove is further provided on the side surface of the fixing plate, and the oscillator is fixed in the second through groove.

[0020] In some alternative embodiments, a third groove is further provided on the upper surface of the first boss. The third groove is disposed on the outer peripheral side of the mounting hole. A circuit board and a brush are also provided in the third groove. The circuit board is electrically connected to the commutator through the brush. A fourth groove is further provided on the surface of the second boss. The fourth groove is disposed on the outer peripheral side of the mounting groove. A sliding piece is provided in the fourth groove. One end of the core shaft is connected to the mounting groove through the sliding piece. A gasket is further connected between the other end of the core shaft and the mounting hole.

[0021] In some alternative embodiments, both the first magnetic ring and the second magnetic ring are two-pole permanent magnets or four-pole permanent magnets or eight-pole permanent magnets. The magnetic poles of the first magnetic ring and the second magnetic ring in the same projection area are opposite to each other.

[0022] The present utility model provides a double-magnet flat motor. Compared with the prior art, its beneficial effects are as follows:

[0023] In the present utility model, a first magnetic ring and a second magnetic ring are provided in the housing. The first magnetic ring and the second magnetic ring are respectively disposed in the first groove and the second groove. The first magnetic ring is in interference fit with the first boss, and the second magnetic ring is in interference fit with the second boss. The present utility model cancels the fixation of the magnetic steel and the housing by glue. Through the interference fit between the magnetic steel and the boss, and the positions of the first boss and the second boss correspond to each other, the concentricity of the magnetic steel and the upper housing is ensured. The N poles and S poles of the first magnetic ring and the second magnetic ring are kept perpendicular, ensuring the consistency of the product. Moreover, the first magnetic ring and the second magnetic ring can be respectively connected to the housing through the first boss and the second boss to close the circuit, reducing the interference of the antenna radio frequency.

[0024] The above description is only an overview of the technical solutions of the embodiments of the present utility model. In order to be able to understand the technical means of the embodiments of the present utility model more clearly, it can be implemented according to the content of the description. And in order to make the above and other purposes, features and advantages of the embodiments of the present utility model more obvious and understandable, the following specifically illustrates the embodiments of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings are only used to illustrate the embodiments and are not considered as a limitation to the present utility model. Moreover, throughout the drawings, the same reference numerals are used to represent the same components. In the drawings:

[0026] Figure 1 Shows a schematic structural diagram of the double-magnet flat motor provided by the present utility model;

[0027] Figure 2 Shows an exploded view of the double-magnet flat motor provided by the present utility model;

[0028] Figure 3 Shows a schematic cross-sectional view of the double-magnet flat motor provided by the present utility model;

[0029] Figure 4 Shows a schematic cross-sectional view of the housing provided by the present utility model.

[0030] Among them,

[0031] 1. Housing; 11. Lower housing; 12. Upper housing; 13. Extension part; 111. First boss; 112. First groove; 113. Mounting hole; 114. First connecting part; 115. First connecting protrusion; 116. Third groove; 121. Second boss; 122. Second groove; 123. Mounting groove; 124. Second connecting part; 125. Second connecting protrusion; 126. Fourth groove;

[0032] 21. First magnetic ring; 22. Second magnetic ring;

[0033] 3. Rotating shaft assembly; 31. Core shaft; 32. Bearing; 34. Fixed plate; 33. Commutator; 35. Coil; 36. Oscillator;

[0034] 4. Circuit board;

[0035] 5. Brush;

[0036] 6. Gasket;

[0037] 7. Slider. Detailed implementation manners

[0038] The exemplary embodiments of the present utility model will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present utility model are shown in the drawings, it should be understood that the present utility model can be implemented in various forms and should not be limited by the embodiments set forth herein.

[0039] Embodiment 1:

[0040] Figures 1-3 Shows a first embodiment of a dual-magnet flat motor provided by the present utility model. This motor can be applied to portable consumer electronic products, such as mobile phones, handheld game consoles, navigation devices, or handheld multimedia entertainment devices, etc. Generally, a vibration motor is used for system feedback, such as incoming call reminders on mobile phones, vibration feedback on game consoles, etc. The dual-magnet flat motor specifically includes a housing 1, a magnet assembly, and a rotating shaft assembly 3.

[0041] Among them, the casing 1 includes a first boss 111 and a second boss 121 respectively arranged in the middle of the upper and lower ends of the casing 1, and the first boss 111 and the second boss 121 are arranged oppositely; the first boss 111 and the casing enclose a first groove 112, and the second boss 121 and the casing enclose a second groove 122; the magnet assembly includes a first magnetic ring 21 and a second magnetic ring 22, the first magnetic ring 21 is fixed in the first groove 112 and is in interference connection with the outer side of the first boss 111, and the second magnetic ring 22 is fixed in the second groove 122 and is in interference connection with the outer side of the second boss 121; the rotating shaft assembly 3 is connected and arranged between the first boss 111 and the second boss 121, and the rotating shaft assembly 3 rotates under the magnetic field of the magnet assembly.

[0042] In some alternative ways, referring to Figure 4 , the casing 1 includes a lower casing 11 and an upper casing 12. The first boss 111 and the first groove 112 are arranged on the lower casing 11, and the second boss 121 and the second groove 122 are arranged on the upper casing 12. The first boss 111 and the lower casing 11 are integrally formed in the mold, and the second boss 121 and the upper casing 12 are integrally formed in the mold.

[0043] In some alternative ways, the upper casing 12 is a cylindrical structure with an opening on one side, and a first connecting portion 114 is arranged at the opening of the upper casing 12; the lower casing 11 includes a main body of the casing 1 and an extension portion 13 connected to one end of the main body of the casing 1; a second connecting portion 124 that is snap-fitted with the first connecting portion 114 is arranged on the circumferential side of the main body of the casing 1, and the lower casing 11 and the upper casing 12 are snap-fitted to form an accommodating space. In this embodiment, the first connecting portion 114 and the second connecting portion 124 can be fixed by welding or glue, so that the upper casing 12 and the lower casing 11 are fixedly connected. The lower casing 11 can be provided with a pad on the extension portion 13 to connect the motor to an external power supply.

[0044] In some alternative embodiments, both the first magnetic ring 21 and the second magnetic ring 22 are two-pole permanent magnets or four-pole permanent magnets or eight-pole permanent magnets; the magnetic poles of the first magnetic ring 21 and the second magnetic ring 22 located in the same projection area are opposite.

[0045] In the above embodiment, the first boss 111, the second boss 121 and the casing 1 can be an integrally formed structure, so that the first boss 111 and the second boss 121 have equal diameters and are opposite in position. The inner diameters of the first magnetic ring 21 and the second magnetic ring 22 can be slightly larger than the inner diameter of the first boss 111 or the second boss 121. So that the first magnetic ring 21 and the second magnetic ring 22 are pressed onto the boss under the action of a pressing device.

[0046] In the present utility model, a first magnetic ring 21 and a second magnetic ring 22 are disposed inside the casing 1. The first magnetic ring 21 and the second magnetic ring 22 are respectively disposed in a first groove 112 and a second groove 122, and the first magnetic ring 21 is in interference fit with a first boss 111, and the second magnetic ring 22 is in interference fit with a second boss 121. The present utility model cancels the fixation of the magnet and the casing 1 by glue. Through the interference fit between the magnet and the boss, and the positions of the first boss 111 and the second boss 121 corresponding to each other, the concentricity of the magnet and the upper casing 12 is ensured, and the N poles and S poles of the first magnetic ring 21 and the second magnetic ring 22 remain perpendicular, ensuring the consistency of the product. Moreover, the first magnetic ring 21 and the second magnetic ring 22 can be respectively connected to the casing 1 through the first boss 111 and the second boss 121 to close the circuit and reduce the interference of the antenna radio frequency.

[0047] Embodiment 2:

[0048] Based on Embodiment 1, the present utility model shows a second embodiment of a dual-magnet flat motor. At least one first connection protrusion 115 is provided at the bottom of the first groove 112. When the first magnetic ring 21 is installed in the first groove 112, the bottom of the first magnetic ring 21 abuts against the first connection protrusion 115. A glue layer is also connected between the bottom of the first magnetic ring 21 and the bottom of the first groove 112, and a glue layer is also connected between the bottom of the second magnetic ring 22 and the bottom of the second groove 122. In this embodiment, while using glue for fixation, the convex points and the magnet can also come into contact, ensuring that the magnetic circuit of the lower magnet and the lower casing 11 form an electromagnetic field closed circuit, reducing the interference of the antenna radio frequency.

[0049] In addition, at least one connection protrusion can also be provided at the bottom of the second groove 122. When the second magnetic ring 22 is installed in the second groove 122, the bottom of the second magnetic ring 22 abuts against the first connection protrusion 115. While using glue for fixation, the convex points and the magnet can also come into contact, ensuring that the magnetic circuit of the lower magnet and the lower casing 11 form an electromagnetic field closed circuit, reducing the interference of the antenna radio frequency.

[0050] After the upper casing 12 and the lower casing 11 complete the assembly of internal parts, when the upper casing 12 and the lower casing 11 are assembled into a product, the upper and lower magnets form an electromagnetic field closed circuit, reducing the interference of the antenna radio frequency.

[0051] Embodiment 3:

[0052] Based on Embodiment 1 or 2, the present utility model discloses a third embodiment of a double-magnet flat motor. The first boss 111 is provided with a mounting hole 113, and the second boss 121 is provided with a mounting groove 123. The rotating shaft assembly 3 includes a core shaft 31, a bearing 32, a fixing plate 34, a commutator 33, a coil 35, and an oscillator 36; the core shaft 31 is connected and arranged between the mounting hole 113 and the mounting groove 123, the bearing 32 is sleeved on the core shaft 31, and the fixing plate 34 and the commutator 33 are fixedly connected to the outside of the bearing 32; two first through grooves are provided on the surface of the fixing plate 34, and the two coils 35 are respectively fixed in the two first through grooves; a second through groove is further provided on the side surface of the fixing plate 34, and the oscillator 36 is fixed in the second through groove.

[0053] A third groove 116 is further provided on the upper surface of the first boss 111. The third groove 116 is arranged on the outer peripheral side of the mounting hole 113. A circuit board 4 and a brush 5 are further arranged in the third groove 116. The circuit board 4 is electrically connected to the commutator 33 through the brush 5; a fourth groove 126 is further provided on the surface of the second boss 121. The fourth groove 126 is arranged on the outer peripheral side of the mounting groove 123. A sliding piece 7 is provided in the fourth groove 126. One end of the core shaft 31 is connected to the mounting groove 123 through the sliding piece 7; a gasket 6 is further connected between the other end of the core shaft 31 and the mounting hole 113. Through the arrangement of the sliding piece 7 and the gasket 6, the rotation of the core shaft 31 is made more stable.

[0054] In this embodiment, the circuit board 4 can be a flexible circuit board 4. The circuit board 4 can be installed from the housing body of the lower housing 11 to the extension part 13. Among them, the extension part 13 is provided with pads for communication connection between the circuit board 4 and the outside. The number of the brushes 5 is 2, which can be respectively connected to the positive and negative feeding welding pads of the circuit board 4, and the other end of the brush 5 is connected to the coil 35 through the commutator 33. After the coil 35 is powered on, the rotor rotates under the magnetic field acting force of the magnet assembly.

[0055] The motor of the present utility model is installed through the following steps: First, the upper housing 12 assembly with the adhesive gasket 6 is poured into the vibrating disk, and an automatic device places the upper housing 12 assembly on a special fixture. The special fixture is conveyed through the assembly line to the next section for interference fitting. After the magnet and the upper housing 12 are taken, interference fitting is carried out. After completion, the finished product is taken out to complete the assembly of the magnet and the upper part. First, the upper housing 12 assembly is poured into the vibrating disk, and an automatic device places the upper housing 12 assembly on the special fixture according to the direction. The automatic device will take away the upper housing 12 assembly to magnetize the magnet. After the magnetization is completed, the upper housing 12 assembly and the lower housing 11 assembly are buckled together to form a single motor and flow into the aging process.

[0056] The working principle of the present utility model is as follows: The basic structure of the motor consists of a permanent magnet and a coil 35. The permanent magnet provides a magnetic field, while the coil 35 generates an electric current. When the motor is operating, the electric current in the coil 35 interacts with the magnetic field in the permanent magnet, generating torque and power. The principle of action of the permanent magnet is based on the interaction of magnetic fields. Permanent magnets are usually made of permanent magnetic materials or electromagnetic materials, and the arrangement of atoms or molecules inside them exhibits magnetism. When a permanent magnet approaches a conductor, the free electrons in the conductor will be affected by the magnetic field force, thereby generating an electric current. Conversely, by passing an electric current through the conductor, a magnetic field can also be generated, causing the permanent magnet to be affected by a force. This interaction between the magnetic field and the electric current is the basis for the operation of the motor.

[0057] In the present utility model, by adding a permanent magnet to the upper housing 12 assembly, the magnetic field intensity of the permanent magnet is increased, so that during the operation of the rotor, under the interaction of the upper and lower permanent magnets (the magnetic fields of the upper and lower permanent magnets alternate. When the lower permanent magnet attracts the coil 35, the upper permanent magnet repels the coil 35, and the dual forces drive the rotor to rotate), the torque and power are increased, thereby quickly starting the motor. The response speed of a single permanent magnet motor is about 150 ms, and the response speed of a dual permanent magnet motor is about 35 ms. Driven by the dual magnetic fields, the starting voltage of the motor will be reduced a lot, so the application range of the motor voltage is also expanded a lot, the vibration sensing adjustment range is wider and more delicate. The minimum starting voltage of a single permanent magnet motor is MinDC2.3v, the application voltage range of a single permanent magnet motor is DC2.2 - 3.3v, the minimum starting voltage of a dual permanent magnet motor is MinDC0.8v, and the application voltage of a dual permanent magnet motor is DC0.8 - 3.3v.

[0058] The motor life is extended. As the resistance generated by wear debris during the aging process of the motor increases, the starting voltage also increases, and the risk of shutdown also increases. Since the torque and power of the dual permanent magnets are enhanced, the resistance generated by the rotor can be offset, thereby greatly reducing the risk of shutdown. The glue fixing between the upper permanent magnet and the upper housing 12 is cancelled, and an annular boss is arranged inside the upper housing 12, which is in interference fit with the inner diameter of the upper permanent magnet, so that the magnetic circuit between the upper housing 12 and the upper permanent magnet is completely closed, reducing the interference of antenna radio frequency.

[0059] At the same time, the concentricity between the permanent magnet and the upper housing 12 is ensured, and the N\S of the upper and lower permanent magnets are kept perpendicular to ensure the consistency of the product. Convex dots are arranged in the magnetic steel installation area of the lower housing 11, and the convex dots can also contact the magnetic steel while using glue for fixation, ensuring that the magnetic circuit of the lower permanent magnet and the lower housing 11 form an electromagnetic field closed circuit, reducing the interference of antenna radio frequency. When the upper and lower housing 11 assemblies are assembled into a product, the upper and lower permanent magnets form an electromagnetic field closed circuit, reducing the interference of antenna radio frequency.

[0060] The algorithms or displays provided here are not inherently related to any specific computer, virtual system, or other device. In addition, the embodiments of the present utility model are not directed to any specific programming language.

[0061] In the specification provided herein, a large number of specific details are described. However, it can be understood that the embodiments of the present utility model can be practiced without these specific details. Similarly, in order to streamline the present utility model and assist in understanding one or more of the various aspects of the utility model, in the above description of the exemplary embodiments of the present utility model, the various features of the embodiments of the present utility model are sometimes grouped together into a single embodiment, figure, or description thereof. Among them, the claims following the specific implementation manners are hereby expressly incorporated into the specific implementation manners, where each claim itself serves as a separate embodiment of the present utility model.

[0062] Those skilled in the art can understand that the modules in the devices in the embodiments can be adaptively changed and arranged in one or more devices different from the embodiments. The modules or units or components in the embodiments can be combined into a single module or unit or component, and in addition, they can be divided into multiple sub-modules or sub-units or sub-components. Except that at least some of such features and / or processes or units are mutually exclusive.

[0063] It should be noted that the above embodiments illustrate the present utility model rather than limit the present utility model, and those skilled in the art can design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in the claims. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The present utility model can be implemented by means of hardware including several different elements and by means of a suitably programmed computer. In the unit claims listing several devices, several of these devices can be embodied by the same item of hardware. The use of the words first, second, and third, etc. does not denote any order. These words can be interpreted as names. The steps in the above embodiments, unless otherwise specified, should not be construed as limiting the order of execution.

Claims

1. A double-magnet flat motor, characterized in that, Including: A casing (1), including a first boss (111) and a second boss (121) respectively arranged in the middle of the upper and lower ends of the casing (1), the first boss (111) and the second boss (121) being arranged oppositely; the first boss (111) and the casing enclose a first groove (112), and the second boss (121) and the casing enclose a second groove (122); A magnet assembly, including a first magnetic ring (21) and a second magnetic ring (22), the first magnetic ring (21) being fixed in the first groove (112) and being in interference connection with the outer side of the first boss (111), and the second magnetic ring (22) being fixed in the second groove (122) and being in interference connection with the outer side of the second boss (121); And a rotating shaft assembly (3), connected and arranged between the first boss (111) and the second boss (121), and the rotating shaft assembly (3) rotates under the magnetic field of the magnet assembly.

2. The double permanent magnet flat motor according to claim 1, wherein The casing (1) includes a lower casing (11) and an upper casing (12), the first boss (111) and the first groove (112) are arranged on the lower casing (11), and the second boss (121) and the second groove (122) are arranged on the upper casing (12).

3. The dual-magnet flat motor according to claim 2, wherein The upper casing (12) is a cylindrical structure with an opening on one side, and a first connecting portion (114) is arranged at the opening of the upper casing (12); the lower casing (11) includes a main body of the casing (1) and an extension portion (13) connected to one end of the main body of the casing (1); a second connecting portion (124) that is in snap-fit connection with the first connecting portion (114) is arranged on the circumferential side of the main body of the casing (1), and the lower casing (11) and the upper casing (12) are snap-connected to form an accommodating space.

4. A dual-magnet flat motor according to claim 3, characterized in that, At least one first connecting protrusion (115) is arranged at the bottom of the first groove (112), and when the first magnetic ring (21) is installed in the first groove (112), the bottom of the first magnetic ring (21) abuts against the first connecting protrusion (115).

5. A double-magnet flat motor according to claim 4, characterized in that, At least one connecting protrusion is arranged at the bottom of the second groove (122), and when the second magnetic ring (22) is installed in the second groove (122), the bottom of the second magnetic ring (22) abuts against the first connecting protrusion (115).

6. A dual-magnet flat motor according to claim 5, characterized in that, A glue layer is further connected between the bottom of the first magnetic ring (21) and the bottom of the first groove (112), and a glue layer is further connected between the bottom of the second magnetic ring (22) and the bottom of the second groove (122).

7. A double-magnet flat motor according to claim 3, characterized in that, The first boss (111) is provided with a mounting hole (113), and the second boss (121) is provided with a mounting groove (123).

8. A dual-magnet flat motor according to claim 7, characterized in that, The rotating shaft assembly (3) includes a core shaft (31), a bearing (32), a fixing plate (34), a commutator (33), a coil (35) and an oscillator (36); The core shaft (31) is connected and arranged between the mounting hole (113) and the mounting groove (123), the bearing (32) is sleeved on the core shaft (31), and the fixing plate (34) and the commutator (33) are fixedly connected to the outer side of the bearing (32); Two first through grooves are provided on the surface of the fixing plate (34), and the two coils (35) are respectively fixed in the two first through grooves; A second through groove is further provided on the side surface of the fixing plate (34), and the vibrator (36) is fixed in the second through groove.

9. A dual-magnet flat motor according to claim 8, characterized in that, A third groove (116) is further provided on the upper surface of the first boss (111). The third groove (116) is provided on the outer peripheral side of the mounting hole (113). A circuit board (4) and a brush (5) are further provided in the third groove (116). The circuit board (4) is electrically connected to the commutator (33) through the brush (5); A fourth groove (126) is further provided on the surface of the second boss (121). The fourth groove (126) is provided on the outer peripheral side of the mounting groove (123). A sliding piece (7) is provided in the fourth groove (126). One end of the core shaft (31) is connected to the mounting groove (123) through the sliding piece (7); A gasket (6) is further connected between the other end of the core shaft (31) and the mounting hole (113).

10. A dual-magnet flat motor according to claim 1, characterized in that, The first magnetic ring (21) and the second magnetic ring (22) are both two-pole permanent magnets or four-pole permanent magnets or eight-pole permanent magnets; The magnetic poles of the first magnetic ring (21) and the second magnetic ring (22) in the same projection area are opposite.

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