Axial flux vibration motor

Abstract

The utility model relates to the technical field of vibration motor, especially axial flux vibration motor. This axial flux vibration motor includes the shell, stator assembly and rotor assembly, stator assembly is fixed in the shell, rotor assembly rotates and is installed in the shell, and rotor assembly includes rotor frame and a plurality of permanent magnet, and rotor frame has the first end face close to stator assembly and the second end face away from stator assembly, and a plurality of permanent magnet is fixed in the first end face and is arranged in the circumference around the axis, and rotor frame has eccentric weight structure, and eccentric weight structure is fixed in the second end face, and eccentric weight structure is used to make the mass center of rotor frame produce the offset relative to the rotation center of rotor frame, can obtain the exciting force using the centrifugal force produced by the high -speed rotation of rotor frame, and further realizes vibration output, satisfies actual exciting force demand, and moreover still can greatly reduce axial dimension, satisfies actual installation demand.

Description

Technical Field

[0001] This utility model relates to the field of vibration motor technology, and in particular to an axial flux vibration motor. Background Technology

[0002] A vibratory motor is a device that converts electrical energy into mechanical vibration and is widely used in various industrial fields. An adjustable eccentric block is installed at each end of the rotor shaft of a vibratory motor. The centrifugal force generated by the high-speed rotation of the shaft and eccentric blocks is used to obtain the excitation force, thereby achieving vibration output.

[0003] In existing technologies, most vibratory motors are radial motors. The basic structure of a radial vibratory motor consists of a stator cylinder and a rotor, with the stator cylinder fitted around the axial outer circumference of the rotor. The magnetic field direction of the radial vibratory motor is radial. When an eccentric block is installed inside the radial flux motor, if the eccentric block is placed inside the rotor, to avoid interference between the rotor and the stator cylinder, the eccentric block is positioned too close to the center of rotation, resulting in insufficient excitation force. If an external shaft is used to connect the rotor and an eccentric block is placed on the external shaft, although sufficient excitation force can be generated, it greatly increases the axial dimension of the vibratory motor, failing to meet the actual installation requirements.

[0004] Therefore, there is an urgent need to invent an axial flux vibration motor to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide an axial flux vibration motor that can provide a sufficiently large excitation force to meet the actual excitation force requirements, while reducing the axial dimension to meet the actual installation requirements.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] An axial flux vibration motor includes:

[0008] chassis;

[0009] The stator assembly is fixed inside the housing;

[0010] The rotor assembly is rotatably mounted inside the housing. The rotor assembly includes a rotor frame and a plurality of permanent magnets. The rotor frame has a first end face close to the stator assembly and a second end face away from the stator assembly. The plurality of permanent magnets are arranged circumferentially around the axis and fixed to the first end face.

[0011] The rotor frame has an eccentric counterweight structure, which is fixed to the second end face. The eccentric counterweight structure is used to offset the center of mass of the rotor frame relative to the rotation center of the rotor frame.

[0012] As an optional solution, the stator assembly includes:

[0013] The stator core has a plurality of stator teeth on the end face near the rotor assembly. The plurality of stator teeth are arranged circumferentially around the axial direction, and each stator tooth is directly opposite a permanent magnet along the axial direction.

[0014] The coil winding has a plurality of coil units connected in sequence, and each of the stator teeth is capable of clamping and fixing one of the coil units.

[0015] As an optional solution, the axial flux vibration motor further includes:

[0016] The adapter assembly has its input end passing through the housing along the axial direction and fixedly connected to the rotor frame. The rotation center of the adapter assembly is the rotation center of the rotor frame. The output end of the adapter assembly is connected to external equipment.

[0017] As an optional solution, the adapter component includes:

[0018] An adapter shaft passes through the housing along the axial direction and is fixedly connected to the rotor frame; the adapter shaft is connected to the external equipment.

[0019] A bearing is sleeved on the outer circumference of the adapter shaft, and the bearing is sandwiched between the adapter shaft and the housing.

[0020] As an optional solution, the adapter component further includes:

[0021] The fastener has an annular boss on the outer periphery of the adapter shaft along the axial direction, the rotor frame has a through hole extending along the axial direction, the annular boss has a fixing hole extending along the axial direction, and the fastener passes through the through hole and is fixedly connected to the fixing hole.

[0022] As an optional solution, the first end face of the rotor frame is provided with an annular mounting groove, and a plurality of permanent magnets are fixed in the annular mounting groove at equal intervals.

[0023] As an alternative, the second end face includes a first region where the eccentric counterweight structure is fixed and a second region where the eccentric counterweight structure is not fixed, the eccentric counterweight structure being configured to increase or decrease the mass of the first region.

[0024] As an optional solution, the axial flux vibration motor has a first working structure, a second working structure, and a third working structure;

[0025] The axial flux vibration motor having the first working structure includes a set of rotor assemblies and a set of stator assemblies, wherein the rotor assemblies and the stator assemblies are arranged sequentially along the axial direction;

[0026] The axial flux vibration motor having the second working structure includes two sets of rotor assemblies and one set of stator assemblies, with the rotor assemblies respectively arranged on both sides of the stator assembly along the axial direction;

[0027] The axial flux vibration motor having the third working structure includes two sets of rotor assemblies and two sets of stator assemblies. The two sets of rotor assemblies are arranged sequentially along the axial direction with the two sets of second end faces facing each other. The two sets of rotor assemblies form a rotor assembly. The two sets of stator assemblies are respectively located on both sides of the rotor assembly along the axial direction.

[0028] As an optional solution, when the axial flux vibration motor is in the first working structure, the housing includes a first housing and a first cover. The first housing has a first receiving cavity. The stator assembly is fixedly connected to the cavity wall of the first receiving cavity. The first receiving cavity has a first opening at one end along the axial direction. The first cover is configured to block the first opening.

[0029] And / or, when the axial flux vibration motor is in the second working structure, the housing includes two first housings, each first housing having a first receiving cavity, each first receiving cavity having a first opening at one end along the axial direction, the two first housings being fastened together, and the two stator assemblies being fixedly connected to the cavity walls of the two first receiving cavities respectively.

[0030] And / or, in the state of the axial flux vibration motor in the third working structure, the housing includes two second housings and a first housing cover, the second housing has a second receiving cavity, the stator assembly is fixedly connected to the cavity wall of the second receiving cavity, the second receiving cavity has a second opening at each end along the axial direction, and the two first housing covers respectively block the two second openings.

[0031] As an alternative, when the axial flux vibration motor is in the second working structure, the magnetic poles of the two permanent magnets arranged opposite to each other along the axial direction in the two sets of rotor assemblies are in opposite directions.

[0032] The beneficial effects of this utility model are:

[0033] The axial flux vibration motor provided by this utility model, by fixing the stator assembly inside the housing and rotatably mounting the rotor assembly inside the housing, can improve the protection of both the stator and rotor assemblies while meeting the basic requirement of the rotor assembly rotating relative to the stator assembly. By installing the permanent magnets inside the rotor assembly on the first end face of the rotor frame close to the stator assembly, the magnetic circuit path can be effectively shortened and the driving power increased. By setting an eccentric counterweight structure on the second end face of the rotor frame, the center of mass of the rotor frame is changed by the eccentric counterweight structure, causing the center of mass of the rotor frame to shift relative to the rotation center of the rotor frame. The centrifugal force generated by the high-speed rotation of the rotor frame can be used to obtain the excitation force, thereby realizing vibration output and meeting the actual excitation force requirements. Moreover, since the second end face is located on the side of the rotor frame away from the stator assembly, it can not only avoid interference between the eccentric counterweight structure and the stator assembly, ensuring the normal operation of the rotor assembly, but also significantly reduce the axial dimension of the rotor assembly, meeting the actual installation requirements. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the structure of the axial flux vibration motor provided in Embodiment 1 of this utility model;

[0035] Figure 2 This is a cross-sectional schematic diagram of the axial flux vibration motor provided in Embodiment 1 of this utility model;

[0036] Figure 3 This is a first exploded schematic diagram of the axial flux vibration motor provided in Embodiment 1 of this utility model;

[0037] Figure 4 This is a second exploded schematic diagram of the axial flux vibration motor provided in Embodiment 1 of this utility model;

[0038] Figure 5 This is a schematic diagram of the structure of the axial flux vibration motor provided in Embodiment 2 of this utility model;

[0039] Figure 6 This is a cross-sectional schematic diagram of the axial flux vibration motor provided in Embodiment 2 of this utility model;

[0040] Figure 7 This is a first exploded schematic diagram of the axial flux vibration motor provided in Embodiment 2 of this utility model;

[0041] Figure 8 This is a second exploded schematic diagram of the axial flux vibration motor provided in Embodiment 2 of this utility model;

[0042] Figure 9 This is a schematic diagram of the magnetic circuit when the magnetic poles of two sets of permanent magnets that are axially opposite each other in the two sets of rotor assemblies have the same direction.

[0043] Figure 10 This is a schematic diagram of the magnetic circuit when the magnetic poles of two sets of permanent magnets that are axially opposite in the two sets of rotor assemblies have opposite directions, as provided in Embodiment 2 of this utility model.

[0044] Figure 11 This is a schematic diagram of the structure of the axial flux vibration motor provided in Embodiment 3 of this utility model;

[0045] Figure 12 This is a cross-sectional schematic diagram of the axial flux vibration motor provided in Embodiment 3 of this utility model;

[0046] Figure 13 This is a first exploded schematic diagram of the axial flux vibration motor provided in Embodiment 3 of this utility model;

[0047] Figure 14 This is a second exploded schematic diagram of the axial flux vibration motor provided in Embodiment 3 of this utility model.

[0048] In the picture:

[0049] 100. Rotor assembly; 110. Rotor frame; 111. Eccentric counterweight structure; 112. Annular mounting groove; 120. Permanent magnet;

[0050] 200. Stator assembly; 210. Stator core; 211. Stator teeth; 220. Coil winding;

[0051] 300. Adapter assembly; 310. Adapter shaft; 320. Bearing;

[0052] 400. First shell cover;

[0053] 500. First shell;

[0054] 600. Second housing; 610. Straight cylindrical body; 620. Sealing baffle; 621. Fixing groove. Detailed Implementation

[0055] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0056] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0057] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0058] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0059] Example 1

[0060] An adjustable eccentric block is installed at each end of the rotor shaft of a vibratory motor. The centrifugal force generated by the high-speed rotation of the shaft and eccentric blocks is used to generate the excitation force, thereby achieving vibration output. In existing technology, most vibratory motors are radial motors. The basic structure of a radial vibratory motor consists of a stator cylinder and a rotor, with the stator cylinder fitted around the axial outer circumference of the rotor. The magnetic field direction of the radial vibratory motor is radial. When eccentric blocks are installed inside the radial flux motor, if they are placed inside the rotor, to avoid interference between the rotor and the stator cylinder on its outer circumference, the eccentric blocks are positioned too close to the center of rotation, resulting in insufficient excitation force. If an external shaft is used to connect the rotor and an eccentric block is installed on the external shaft, although sufficient excitation force can be generated, the axial dimension of the vibratory motor is greatly increased, failing to meet the actual installation requirements.

[0061] To solve the above problems, such as Figures 1-4As shown, this embodiment provides an axial flux vibration motor. The axial flux vibration motor includes a housing, a rotor assembly 100, and a stator assembly 200. The stator assembly 200 is fixed inside the housing, and the rotor assembly 100 is rotatably mounted inside the housing. The rotor assembly 100 includes a rotor frame 110 and a plurality of permanent magnets 120. The rotor frame 110 has a first end face near the stator assembly 200 and a second end face away from the stator assembly 200. The plurality of permanent magnets 120 are arranged circumferentially around the axial direction and fixed to the first end face. The rotor frame 110 has an eccentric counterweight structure 111, which is fixed to the second end face. The eccentric counterweight structure 111 is used to offset the center of mass of the rotor frame 110 relative to the rotation center of the rotor frame 110.

[0062] This axial flux vibration motor, by fixing the stator assembly 200 within the housing and rotatably mounting the rotor assembly 100 within the housing, can improve the protection of both the stator assembly 200 and the rotor assembly 100 while meeting the basic requirement of rotation of the rotor assembly 100 relative to the stator assembly 200. By mounting the permanent magnet 120 within the rotor assembly 100 on the rotor frame 110 near the first end face of the stator assembly 200, ensuring the first end face is close to the stator assembly 200, the magnetic circuit path can be effectively shortened, increasing the driving power. Furthermore, by setting an eccentric counterweight on the second end face of the rotor frame 110... Structure 111 alters the center of mass of rotor frame 110 by using an eccentric counterweight structure 111, causing the center of mass of rotor frame 110 to shift relative to the rotation center of rotor frame 110. This allows the centrifugal force generated by the high-speed rotation of rotor frame 110 to generate excitation force, thereby achieving vibration output and meeting actual excitation force requirements. Furthermore, since the second end face is located on the side of rotor frame 110 away from stator assembly 200, it not only avoids interference between eccentric counterweight structure 111 and stator assembly 200, ensuring normal operation of rotor assembly 100, but also significantly reduces the axial dimension of rotor assembly 100, meeting actual installation requirements.

[0063] Specifically, the second end face includes a first region where the eccentric counterweight structure 111 is fixed and a second region where the eccentric counterweight structure 111 is not fixed. The eccentric counterweight structure 111 is configured to increase or decrease the mass of the first region. It should be noted that in this embodiment, the eccentric counterweight structure 111 is a protrusion in the first region, used to increase the mass of the first region. In other embodiments, the eccentric counterweight structure 111 may also be located in a groove in the first region to decrease the mass of the first region; this embodiment does not impose a specific limitation. Furthermore, in this embodiment, the rotor frame 110 is integrally formed by injection molding, and the eccentric counterweight structure 111 is integrally formed synchronously with the rotor frame 110 according to the injection cavity formed by the injection mold.

[0064] The axial flux vibration motor has a first working structure, a second working structure, and a third working structure. The axial flux vibration motor with the first working structure includes a rotor assembly 100 and a stator assembly 200, arranged sequentially along the axial direction. The axial flux vibration motor with the second working structure includes two rotor assemblies 100 and one stator assembly 200, with rotor assemblies 100 respectively located on both sides of the stator assembly 200 along the axial direction. The axial flux vibration motor with the third working structure includes two rotor assemblies 100 and two stator assemblies 200, arranged sequentially along the axial direction with two sets of second end faces facing each other. The two rotor assemblies 100 form a rotor assembly, and the two stator assemblies 200 are located on both sides of the rotor assembly along the axial direction. In this embodiment, the axial flux vibration motor is in the first working structure, that is, the axial flux vibration motor provided in this embodiment includes a stator assembly 200 and a rotor assembly 100.

[0065] Optionally, when the axial flux vibration motor is in its first working state, the housing includes a first housing 500 and a first cover 400. The first housing 500 has a first receiving cavity, and the stator assembly 200 is fixedly connected to the cavity wall of the first receiving cavity. One end of the first receiving cavity along the axial direction has a first opening, and the first cover 400 is configured to seal the first opening. By disassembling the housing into the first housing 500 and the first cover 400, providing the first receiving cavity within the first housing 500, and opening the first opening by axial movement of the first receiving cavity, and sealing the first opening, not only can the rotor assembly 100 and the stator assembly 200 be accommodated and stored, but also clearance space can be provided for the rotor assembly 100 and the stator assembly 200 to enter and exit the first receiving cavity, facilitating assembly, manufacturing, and subsequent inspection and maintenance. Furthermore, by fixing the stator assembly 200 to the cavity wall of the first receiving cavity, stable fixation of the stator assembly 200 can also be achieved. It should be noted that in this embodiment, the first housing 500 is a cylindrical structure, and the axial direction of the cylindrical structure is the same as the axial direction of the axial flux vibration motor.

[0066] As an optional solution, the stator assembly 200 includes a stator core 210 and a coil winding 220. The stator core 210 has multiple stator teeth 211 on its end face near the rotor assembly 100. These teeth are arranged circumferentially around the axial direction, and each tooth 211 is axially aligned with a permanent magnet 120. The coil winding 220 has multiple coil cells connected sequentially, and each tooth 211 can clamp and fix one coil cell. By providing multiple stator teeth 211 on the end face of the stator core 210 near the rotor assembly 100, arranging them circumferentially around the axial direction, and ensuring that each tooth 211 is axially aligned with a permanent magnet 120, combined with the clamping and fixing of the coil winding 220 by the stator teeth 211, the magnetic circuit path can be shortened to the greatest extent, thereby increasing the drive power. It should be noted that in this embodiment, the stator core 210 has 16 stator teeth 211, and the rotor assembly 100 includes 16 permanent magnets 120. The 16 stator teeth 211 and the 16 permanent magnets 120 are arranged at equal intervals around the axial direction, with each stator tooth 211 facing one permanent magnet 120. In other embodiments, the specific number of stator teeth 211 and permanent magnets 120 can be adjusted according to actual needs; this embodiment does not impose a specific limitation. Understandably, to ensure the normal operation of this axial flux vibration motor, the magnetic poles of any two adjacent permanent magnets 120 are in opposite directions.

[0067] Furthermore, in this embodiment, an annular mounting groove 112 is provided on the first end face of the rotor frame 110, and 16 permanent magnets 120 are fixed at equal intervals within the annular mounting groove 112. By providing an annular mounting groove 112 on the first end face of the rotor frame 110 and fixing the 16 permanent magnets 120 at equal intervals within the annular mounting groove 112, rapid assembly and positioning of the permanent magnets 120 and the rotor frame 110 can be achieved, improving assembly efficiency. In other embodiments, 16 mating grooves can also be provided on the first end face of the rotor frame 110, with the 16 mating grooves arranged at equal intervals around the axial direction, and each mating groove used to accommodate one permanent magnet 120. This embodiment does not impose a specific limitation.

[0068] To enable the axial flux vibration motor to connect with external equipment, the axial flux vibration motor also includes an adapter component 300. The input end of the adapter component 300 passes through the housing along the axial direction and is fixedly connected to the rotor frame 110. The rotation center of the adapter component 300 is the rotation center of the rotor frame 110. The output end of the adapter component 300 connects with the external equipment.

[0069] Specifically, the adapter assembly 300 includes an adapter shaft 310 and a bearing 320. The adapter shaft 310 passes axially through the housing and is fixedly connected to the rotor frame 110. The adapter shaft 310 is connected to external equipment. The bearing 320 is sleeved on the outer periphery of the adapter shaft 310 and sandwiched between the adapter shaft 310 and the housing. It should be noted that in this embodiment, the adapter assembly 300 includes two bearings 320. Both bearings 320 are sleeved on the outer periphery of the adapter shaft 310. One of the two bearings 320 is sandwiched between the first housing 500 and the adapter shaft 310, and the other of the two bearings 320 is sandwiched between the first cover 400 and the adapter shaft 310.

[0070] To achieve a fixed connection between the adapter shaft 310 and the rotor frame 110, the adapter assembly 300 also includes a fixing member. The adapter shaft 310 has an annular boss along its axial outer periphery, the rotor frame 110 has an axially extending through hole, and the annular boss has an axially extending fixing hole. The fixing member passes through the through hole and is fixedly connected to the fixing hole. By providing an annular boss on the axial outer periphery of the adapter shaft 310, and opening an axially extending fixing hole on the annular boss and an axially extending through hole on the rotor frame 110, the fixing member passes through the through hole and is fixedly connected to the fixing hole, thus achieving a good fixing effect and ensuring a secure connection between the adapter shaft 310 and the rotor frame 110.

[0071] It should be noted that in this embodiment, the fixing component is a bolt, and the fixing hole is a threaded hole. The bolt thread passes through the through hole and is then threaded into the fixing hole. The threaded fixing method of the adapter shaft 310 and the rotor frame 110 not only provides a good fixing effect but also facilitates disassembly, making subsequent inspection and maintenance easier.

[0072] Optionally, the adapter assembly 300 has multiple fasteners, the annular boss has multiple fixing holes, and the rotor frame 110 has multiple through holes. Each fastener corresponds to one fixing hole and one through hole to further ensure the fixing effect between the adapter shaft 310 and the rotor frame 110. It should be noted that in this embodiment, the adapter assembly 300 has eight fasteners, the annular boss has eight fixing holes, and the rotor frame 110 has eight through holes. In other embodiments, the number of fasteners, fixing holes, and through holes can be adjusted according to actual needs, as long as each fastener corresponds to one fixing hole and one through hole. This embodiment does not impose specific limitations.

[0073] Example 2

[0074] like Figures 5-8As shown, the specific structure of the axial flux vibration motor provided in this embodiment is basically the same as that in Embodiment 1. The difference between the specific structure of the axial flux motor provided in this embodiment and Embodiment 1 is that the axial flux vibration motor provided in this embodiment is in the second working structure mentioned in Embodiment 1.

[0075] Specifically, in the second working structure state of the axial flux vibration motor, the housing includes two first housings 500, each first housing 500 having a first receiving cavity, and each first receiving cavity having a first opening at one end along the axial direction. The two first housings 500 are interlocked, and the two stator assemblies 200 are respectively fixedly connected to the cavity walls of the two first receiving cavities. By setting the housing as two interlocking first housings 500 and fixing the two stator assemblies 200 to the cavity walls of the first receiving cavities within the two first housings 500, the fixation effect of the two stator assemblies 200 can be guaranteed.

[0076] In this embodiment, due to the presence of the eccentric counterweight structure 111, there is a large gap between the two rotor assemblies 100. To ensure the driving power of the axial flux vibration motor, the two rotor assemblies 100 and the opposite stator assembly 200 form two sets of power structures, and the two sets of power structures work synchronously.

[0077] To achieve the above objectives, such as Figure 9 and Figure 10 As shown, when the axial flux vibration motor is in the second working structure, the magnetic poles of the two permanent magnets 120 arranged axially opposite each other in the two sets of rotor assemblies 100 are opposite. Utilizing the inherent characteristics of the permanent magnets 120, namely that the magnetic lines of force are emitted from the N pole and return to the S pole, if the magnetic poles of the two opposing permanent magnets 120 are opposite, the magnetic lines of force emitted from one side of the permanent magnet 120 will have difficulty effectively passing through the air gap into the other side of the permanent magnet 120, so that the two rotor assemblies 100 and the stator assembly 200 opposite to each other form two sets of power structures.

[0078] Example 3

[0079] like Figures 11-14 As shown, the specific structure of the axial flux vibration motor provided in this embodiment is basically the same as that in Embodiment 1. The difference between the specific structure of the axial flux motor provided in this embodiment and that in Embodiment 1 is that the axial flux vibration motor provided in this embodiment is in the third working structure mentioned in Embodiment 1.

[0080] Specifically, when the axial flux vibration motor is in the third working structure, the housing includes two second housings 600 and a first housing cover 400. The second housing 600 has a second receiving cavity. The stator assembly 200 is fixedly connected to the cavity wall of the second receiving cavity. The second receiving cavity has a second opening at each end along the axial direction. The two first housing covers 400 respectively block the two second openings.

[0081] To achieve a fixed connection between the second housing 600 and the stator assembly 200, in this embodiment, the second housing 600 includes a cylindrical body 610 and two sealing baffles 620. The cylindrical body 610 has a second receiving cavity and two second openings. The two sealing baffles 620 are spaced apart along the axial direction of the cylindrical body 610 in the second receiving cavity. The cylindrical body 610 and the two sealing baffles 620 together form a first storage space for fixing the stator assembly 200, and second storage spaces for installing the rotor assembly 100 are formed on both sides of the fixing space along the axial direction. This achieves a fixed connection between the second housing 600 and the stator assembly 200.

[0082] In addition, the stator assembly 200 in this embodiment includes multiple stator teeth 211 arranged at equal intervals around the axial direction, and multiple fixing grooves 621 are provided on the two opposite end faces of the two sealing baffles 620. The multiple fixing grooves 621 on the same end face are arranged at equal intervals around the axial direction, and each fixing groove 621 accommodates and positions one stator tooth 211 to reduce iron loss.

[0083] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. An axial flux vibration motor, characterized in that, include: chassis; The stator assembly (200) is fixed inside the housing; A rotor assembly (100) is rotatably mounted inside the housing. The rotor assembly (100) includes a rotor frame (110) and a plurality of permanent magnets (120). The rotor frame (110) has a first end face close to the stator assembly (200) and a second end face away from the stator assembly (200). The plurality of permanent magnets (120) are arranged circumferentially around the axis and fixed to the first end face. The rotor frame (110) has an eccentric counterweight structure (111) fixed to the second end face. The eccentric counterweight structure (111) is used to offset the center of mass of the rotor frame (110) relative to the rotation center of the rotor frame (110).

2. The axial flux vibration motor according to claim 1, characterized in that, The stator assembly (200) includes: The stator core (210) has a plurality of stator teeth (211) on the end face near the rotor assembly (100). The plurality of stator teeth (211) are arranged in a circle around the axial direction, and each stator tooth (211) is directly opposite a permanent magnet (120) along the axial direction. The coil winding (220) has a plurality of coil units connected in sequence, and each of the stator teeth (211) is capable of clamping and fixing one of the coil units.

3. The axial flux vibration motor according to claim 1, characterized in that, The axial flux vibration motor also includes: The adapter assembly (300) has its input end passing through the housing along the axial direction and fixedly connected to the rotor frame (110). The rotation center of the adapter assembly (300) is the rotation center of the rotor frame (110). The output end of the adapter assembly (300) is connected to an external device.

4. The axial flux vibration motor according to claim 3, characterized in that, The adapter assembly (300) includes: A transfer shaft (310) passes through the housing along the axial direction and is fixedly connected to the rotor frame (110). The transfer shaft (310) is connected to the external equipment. A bearing (320) is sleeved on the outer periphery of the adapter shaft (310), and the bearing (320) is sandwiched between the adapter shaft (310) and the housing.

5. The axial flux vibration motor according to claim 4, characterized in that, The adapter assembly (300) also includes: The fastener has an annular boss on the outer periphery of the adapter shaft (310) along the axial direction, and the rotor frame (110) has a through hole extending along the axial direction. The annular boss has a fixing hole extending along the axial direction. The fastener passes through the through hole and is fixedly connected to the fixing hole.

6. The axial flux vibration motor according to claim 1, characterized in that, The first end face of the rotor frame (110) is provided with an annular mounting groove (112), and a plurality of permanent magnets (120) are fixed in the annular mounting groove (112) at equal intervals.

7. The axial flux vibration motor according to claim 1, characterized in that, The second end face includes a first region where the eccentric counterweight structure (111) is fixed and a second region where the eccentric counterweight structure (111) is not fixed, the eccentric counterweight structure (111) being configured to increase or decrease the mass of the first region.

8. The axial flux vibration motor according to any one of claims 1 to 7, characterized in that, The axial flux vibration motor has a first working structure, a second working structure and a third working structure; The axial flux vibration motor having the first working structure includes a set of rotor assemblies (100) and a set of stator assemblies (200), wherein the rotor assemblies (100) and the stator assemblies (200) are arranged sequentially along the axial direction; The axial flux vibration motor having the second working structure includes two sets of rotor assemblies (100) and one set of stator assemblies (200), with the rotor assemblies (100) respectively arranged on both sides of the stator assembly (200) along the axial direction; The axial flux vibration motor with the third working structure includes two sets of rotor assemblies (100) and two sets of stator assemblies (200). The two sets of rotor assemblies (100) are arranged sequentially along the axial direction with the two sets of second end faces facing each other. The two sets of rotor assemblies (100) form a rotor assembly. The two sets of stator assemblies (200) are located on both sides of the rotor assembly along the axial direction.

9. The axial flux vibration motor according to claim 8, characterized in that, When the axial flux vibration motor is in the first working structure, the housing includes a first housing (500) and a first cover (400). The first housing (500) has a first receiving cavity. The stator assembly (200) is fixedly connected to the cavity wall of the first receiving cavity. The first receiving cavity has a first opening at one end along the axial direction. The first cover (400) is configured to block the first opening. And / or, when the axial flux vibration motor is in the second working structure, the housing includes two first housings (500), each first housing (500) has a first receiving cavity, each first receiving cavity has a first opening at one end along the axial direction, the two first housings (500) are fastened to each other, and the two stator assemblies (200) are respectively fixedly connected to the cavity walls of the two first receiving cavities; And / or, in the state where the axial flux vibration motor is in the third working structure, the housing includes two second housings (600) and a first housing cover (400), the second housing (600) has a second receiving cavity, the stator assembly (200) is fixedly connected to the cavity wall of the second receiving cavity, the second receiving cavity has a second opening at each end along the axial direction, and the two first housing covers (400) respectively block the two second openings.

10. The axial flux vibration motor according to claim 8, characterized in that, When the axial flux vibration motor is in the second working state, the magnetic poles of the two permanent magnets (120) arranged opposite to each other along the axial direction in the two sets of rotor assemblies (100) are opposite.

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