Electric motor and oral cleaning device

Abstract

The application discloses a motor and an oral cleaning device. The motor comprises a rotor and a stator. The rotor comprises a shaft body and a magnetic mechanism. The shaft body penetrates the magnetic mechanism. The stator comprises an iron core mechanism and a coil mechanism. The coil mechanism is arranged on the iron core mechanism. When the coil mechanism is electrified, the magnetic mechanism can drive the shaft body to reciprocate relative to the stator under the action of magnetic force, so as to form vibration. The iron core mechanism comprises a plurality of iron core bodies arranged in a split mode. The plurality of iron core bodies are arranged in a circumferential direction. Adjacent iron core bodies are connected to make the plurality of iron core bodies form an accommodation space for accommodating the rotor. The motor and the oral cleaning device provided by the application have a reasonable structural design.

Description

Technical Field

[0001] This application relates to the field of oral hygiene technology, and more particularly to an electric motor and an oral hygiene device. Background Technology

[0002] As people's living standards improve, personal hygiene and health are receiving increasing attention. Oral hygiene, as an important aspect of personal hygiene, has also gained importance. In recent years, oral hygiene devices have become increasingly popular due to their high cleaning efficiency and convenience. Oral hygiene devices consist of a motor and a cleaning component; the motor drives the cleaning component to clean the mouth.

[0003] However, the motors in the related technologies have unreasonable structural designs, making it inconvenient for the winding machine to extend into the stator for winding, resulting in low winding efficiency. Utility Model Content

[0004] This application provides an electric motor and an oral cleaning device, which aims to make the structure of the motor reasonable.

[0005] This application provides a motor for use in an oral hygiene device, the motor comprising:

[0006] A rotor, the rotor comprising a shaft and a magnetic mechanism, the shaft passing through the magnetic mechanism;

[0007] The stator includes an iron core mechanism and a coil mechanism, with the coil mechanism disposed within the iron core mechanism; when the coil mechanism is energized, the magnetic mechanism can drive the shaft to reciprocate relative to the stator under the action of magnetic force, thereby generating vibration;

[0008] The core mechanism includes multiple separately arranged core bodies, which are arranged circumferentially and connected to each other so that the multiple core bodies enclose a receiving space for accommodating the rotor.

[0009] The motor described in the above embodiment has a reasonable structural design, which is beneficial to improving winding efficiency. Specifically, since the core mechanism includes multiple separately arranged core bodies, which are not integrally formed and connected, the coil mechanism corresponding to each core body can be assembled with the core body, and then the core bodies can be connected to form a cylindrical structure. This eliminates the need for the winding machine's needle to extend into the narrow cylindrical structure to assemble the coil mechanism with the corresponding core body, which helps to reduce the requirements for the winding machine. A conventional winding machine can be used to place the coil mechanism on the core body, effectively reducing the equipment cost of the winding machine and greatly improving winding efficiency.

[0010] In the motor of this application, the iron core includes a yoke and teeth, the yoke is connected to the teeth, and the coil mechanism is disposed on the teeth. Multiple yokes of the iron cores are arranged circumferentially. The yokes of adjacent iron cores are connected so that the multiple iron cores cooperate to form a cylindrical structure. Because the yokes of adjacent iron cores are connected to form a cylindrical structure, the motor of this application can minimize the probability of damage to the coil mechanism when two adjacent iron cores are connected; it can also minimize the impact of high welding temperatures on the coil mechanism, thus improving the reliability of the coil mechanism.

[0011] In the motor of this application, the number of iron cores includes two, and the two iron cores are connected and cooperate to form the cylindrical structure. The motor of this application embodiment has a simple iron core mechanism structure.

[0012] In the motor of this application, the yoke has a connecting portion for connecting and fixing adjacent iron cores. In the motor of this embodiment, the connecting portion is located in the yoke, rather than in the outer peripheral area corresponding to the teeth, which can avoid damage to the winding frame or instability of the winding frame during welding, fusion, or bonding.

[0013] In the motor of this application, the yoke includes:

[0014] The curved section connects to the toothed portion;

[0015] A planar segment connects to one side of the curved segment, and the planar segment has a connecting portion for connecting and fixing adjacent iron cores. In the motor of this application, the planar segment has a connecting portion, which facilitates positioning and docking when two adjacent iron cores are connected, and makes welding or bonding operations easy and convenient.

[0016] In the motor of this application, the coil mechanism includes a winding frame connected to the iron core, and the connecting portion is disposed between the winding frames on two adjacent iron cores. In the motor of this application, the connecting portion being disposed between two adjacent winding frames can avoid affecting the magnetic circuit when welding or bonding the iron core; it can also reduce the probability of damage to the coil assembly or winding frame during welding or bonding.

[0017] In the motor of this application, the iron core body has a connecting portion, and a groove is formed on the outer periphery of the connecting portion. The groove is used to fix adjacent iron core bodies with glue or welding. In the motor of this application embodiment, the groove can prevent the flow of glue, welding wire, etc., from increasing the size of the iron core body, making it difficult to install nails or iron chips into the outer casing; at the same time, because the groove is located on the outer periphery of the iron core body, it is convenient for the user to weld, fuse, or bond adjacent iron core bodies.

[0018] In the motor of this application, the coil mechanism includes:

[0019] A winding frame is connected to the iron core body;

[0020] The coil assembly is disposed on the winding frame;

[0021] In this embodiment, the winding frame is a one-piece molded structure, or the winding frame includes two separately configured winding portions, each connected to the same iron core. In the motor of this application embodiment, the winding frame is a one-piece molded structure, resulting in a more robust connection between the winding frame and the coil assembly. This design also simplifies the winding frame structure, reduces the number of parts, and improves the motor's assembly efficiency. Alternatively, the winding frame includes two separately configured winding portions, making the connection between the winding frame and the iron core more flexible and convenient, while also saving materials and reducing costs.

[0022] In the motor of this application, the connection method of two adjacent iron cores includes at least one of the following: welding connection, fusion connection, snap-fit ​​connection, and adhesive connection. The motor of this application embodiment has a simple and convenient connection between two adjacent iron cores.

[0023] In the motor of this application, the magnetic mechanism includes:

[0024] Rotor core, through which the shaft passes;

[0025] Magnets are disposed in the rotor core;

[0026] The first limiting member is used to limit the magnet, and the magnet is disposed between the shaft and the first limiting member. In this embodiment of the motor, the first limiting member reinforces and protects the magnet, ensuring that the magnet will not fall off during normal use and preventing it from falling off during rotor oscillation or rotation; at the same time, it can also effectively protect the magnet under extreme drop conditions.

[0027] In the motor of this application, the rotor is capable of reciprocating at a large angle relative to the stator, and the rotor further includes:

[0028] The second limiting member, connected to the shaft, is used to limit the maximum angle of rotation of the shaft. In this embodiment of the motor, the shaft or rotor can reciprocate within a certain angle range, enabling the motor to drive the cleaning component to perform efficient cleaning of the oral cavity.

[0029] In the motor of this application, the rotation angle range of the shaft is [-30°, 30°]. The motor of this embodiment can reduce the cogging torque of the motor, which is beneficial for controlling the rotation of the motor and reducing power consumption; at the same time, it avoids noise caused by the contact and collision of the limiting parts during the oral cleaning process, and limits the maximum rotation range of the oral cleaning device to prevent the oral cleaning device from sweeping too much when the current increases abnormally, which could easily damage the gums.

[0030] In the motor of this application, the second limiting member includes:

[0031] Connector body, connected to the shaft body;

[0032] A limiting body protrudes from the connecting body and is used to restrict the rotation of the shaft. In the motor of this embodiment, the second limiting member has a simple structure.

[0033] In the motor of this application, the outer contour dimension of the second limiting member in the direction perpendicular to the shaft is smaller than the dimension of the accommodating space in the direction perpendicular to the shaft. In the motor of this embodiment, at least a portion of the second limiting member can be disposed within the accommodating space, so that the second limiting member cooperates with the core mechanism to limit the rotation of the shaft.

[0034] In the motor of this application, the motor further includes:

[0035] The housing, wherein the stator and at least a portion of the rotor are disposed within the housing;

[0036] An end cap is connected to the outer casing. The rotor shaft passes through the outer casing and the end cap, and the shaft is rotatable relative to the end cap. The end cap is provided with a terminal block, which is connected to the coil mechanism. In the motor of this embodiment, the enameled wire leading from the coil mechanism can be wound around the terminal block, which not only fixes the lead wire but also facilitates automated welding, enabling mass automated production of the product.

[0037] This application also provides an oral cleaning device, including a motor as described in any of the preceding claims.

[0038] The oral cleaning device described in the above embodiment has a reasonably designed motor structure, which is beneficial for improving winding efficiency. Specifically, since the core mechanism includes multiple separately arranged core bodies, the coil mechanism corresponding to each core body can be assembled with the core body, and then the core bodies can be connected to form a cylindrical structure. This eliminates the need for the winding machine's needle to extend into the narrow cylindrical structure to assemble the coil mechanism with the corresponding core body, thus reducing the requirements for the winding machine. A conventional winding machine can be used to house the coil mechanism within the core body, effectively reducing the equipment cost of the winding machine while significantly improving winding efficiency.

[0039] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0040] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0041] Figure 1 This is a schematic diagram of the structure of an oral cleaning device provided in one embodiment of this application;

[0042] Figure 2 This is a schematic diagram of the structure of an electric motor provided in one embodiment of this application;

[0043] Figure 3 This is an exploded view of an electric motor provided in one embodiment of this application;

[0044] Figure 4 This is a schematic diagram of an iron core mechanism at an angle provided in an embodiment of this application;

[0045] Figure 5 This is a schematic diagram of the structure of a core mechanism provided in one embodiment of this application from another angle;

[0046] Figure 6 This is a schematic diagram of the structure of the second limiting member provided in an embodiment of this application.

[0047] Explanation of reference numerals in the attached figures:

[0048] 1000. Oral hygiene equipment;

[0049] 100. Motor; 200. Brush head; 201. Cleaning parts; 300. Brush handle;

[0050] 10. Rotor; 11. Shaft; 12. Magnetic mechanism; 121. Rotor core; 122. Magnet; 123. First limiting element; 13. Second limiting element; 131. Connecting body; 132. Limiting body;

[0051] 20. Stator; 21. Core mechanism; 211. Core body; 2111. Yoke; 21111. Curved section; 21112. Planar section; 2112. Tooth; 212. Accommodating space; 213. Connecting part; 2131. Groove; 22. Coil mechanism; 221. Winding frame; 2211. Winding part; 222. Coil assembly;

[0052] 30. Outer shell; 40. End cap. Detailed Implementation

[0053] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0054] It should also be understood that the terminology used in this application specification is merely for describing specific realities within the scope of this application. It is important to understand that terms such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are used solely for the convenience of describing this application and for simplifying the description, 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 application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0055] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0056] Please see Figure 1 This application provides an oral cleaning device 1000 for cleaning the oral cavity, such as cleaning teeth or gums. Exemplarily, the oral cleaning device 1000 includes an electric toothbrush or other oral cleaning devices.

[0057] Please see Figure 2 The oral cleaning device 1000 includes a motor 100, which can improve the cleaning effect and ease of use of the oral cleaning device 1000.

[0058] Please see Figure 1In some embodiments, the oral hygiene device 1000 includes a brush head 200 and a handle 300, the brush head 200 being connected to the handle 300. A motor 100 is used to drive the cleaning element 201 of the brush head 200 to move, thereby cleaning the oral cavity. A user can hold the handle 300 to move the oral hygiene device 1000, thus completing the brushing action. Exemplarily, the vibration generated by the motor 100 can be transmitted to the cleaning element 201, thereby cleaning the oral cavity. Exemplarily, the motor 100 can drive the cleaning element 201 to rotate, thereby cleaning the oral cavity. Exemplarily, the motor 100 is driveably connected to at least one of the brush head 200 and the handle 300, thereby causing the cleaning element 201 to clean the oral cavity. Exemplarily, the motor 100 is at least partially disposed within the handle 300. Exemplarily, the cleaning element 201 includes bristles or other flexible cleaning elements 201.

[0059] Please see Figure 2 , Figure 3 and Figure 4 In some embodiments, the motor 100 includes a rotor 10 and a stator 20. The rotor 10 includes a shaft 11 and a magnetic mechanism 12, with the magnetic mechanism 12 passing through the shaft 11. The stator 20 includes an iron core mechanism 21 and a coil mechanism 22, with the coil mechanism 22 disposed on the iron core mechanism 21. When the coil mechanism 22 is energized, the magnetic mechanism 12 can drive the shaft 11 to reciprocate relative to the stator 20 under the action of magnetic force, thereby generating vibration. The iron core mechanism 21 includes a plurality of separately arranged iron core bodies 211, which are arranged circumferentially. Adjacent iron core bodies 211 are connected so that the plurality of iron core bodies 211 enclose a receiving space 212 for accommodating the rotor 10.

[0060] The motor 100 in the above embodiment has a reasonable structural design, which is beneficial to improving winding efficiency. Specifically, since the iron core mechanism 21 includes multiple separately arranged iron core bodies 211, and the multiple iron core bodies 211 are not integrally formed and connected, the coil mechanism 22 corresponding to each iron core body 211 can be assembled with the iron core body 211, and then the iron core bodies 211 are connected to form a cylindrical structure. There is no need for the needle of the winding machine to extend into the narrow cylindrical structure to assemble the coil mechanism 22 with the corresponding iron core body 211, which helps to reduce the requirements of the winding machine. A conventional winding machine can be used to set the coil mechanism 22 on the iron core body 211, which effectively reduces the equipment cost of the winding machine and also greatly improves the winding efficiency.

[0061] Please see Figure 3In some embodiments, the coil mechanism 22 includes a winding frame 221 and a coil assembly 222, with the winding frame 221 connected to the iron core 211; the coil assembly 222 is disposed on the winding frame 221. In some embodiments, the winding frame 221 is a one-piece molded structure, thus the connection between the winding frame 221 and the coil assembly 222 is more robust, the structure of the winding frame 221 is simple, the number of parts is small, and the assembly efficiency of the motor 100 is high. Please refer to... Figure 3 In some embodiments, the winding frame 221 includes two separately configured winding portions 2211, each connected to the same iron core 211. This makes the connection between the winding frame 221 and the iron core 211 more flexible and convenient, and saves materials and reduces costs. For example, during processing, the two winding portions 2211 of the winding frame 221 can be connected to the same iron core 211, and then the coil is wound around the two winding portions 2211 to form a coil assembly 222, thus connecting the iron core 211 and the coil mechanism 22. Then, multiple iron cores 211 equipped with coil mechanisms 22 are connected to form a cylindrical structure. This eliminates the need for the winding machine's needle to penetrate the narrow cylindrical structure to assemble the coil mechanism 22 with the corresponding iron core 211, reducing the requirements for the winding machine. A conventional winding machine can be used to mount the coil mechanism 22 on the iron core 211, effectively reducing the equipment cost of the winding machine and significantly improving winding efficiency.

[0062] Please see Figure 4 and Figure 5 In some embodiments, the iron core 211 includes a yoke 2111 and a toothed portion 2112, with the yoke 2111 connected to the toothed portion 2112. The coil mechanism 22 is disposed on the toothed portion 2112, and the yokes 2111 of multiple iron cores 211 are arranged circumferentially. The yokes 2111 of adjacent iron cores 211 are connected so that multiple iron cores 211 cooperate to form a cylindrical structure. In this way, the probability of damage to the coil mechanism 22 when two adjacent iron cores 211 are connected can be minimized. When two adjacent iron cores 211 are welded together, the connection of the yokes 2111 of adjacent iron cores 211 also minimizes the impact of high welding temperatures on the coil mechanism 22, which is beneficial to improving the reliability of the coil mechanism 22.

[0063] Please see Figure 4 and Figure 5In some embodiments, the number of iron cores 211 includes two, which are connected and cooperate to form a cylindrical structure, thus simplifying the structure of the iron core mechanism 21. During processing, one iron core 211 can be connected to the corresponding winding frame 221 and then wound; then the other iron core 211 can be connected to the corresponding winding frame 221 and then wound; then the two wound iron cores 211 are placed in a fixture for fixation and welding. This eliminates the need for the winding machine to extend into the accommodating space 212 of the cylindrical structure for winding, which improves winding efficiency, reduces the equipment cost of the winding machine, and thus reduces production costs. In other embodiments, the number of iron cores 211 can be designed to be three, four, or more, depending on actual needs, and is not limited here.

[0064] Please see Figure 4 and Figure 5 In some embodiments, the yoke 2111 has a connecting portion 213 for connecting and fixing adjacent iron core bodies 211. The connecting portion 213 is located in the yoke 2111 rather than in the outer peripheral area corresponding to the tooth 2112, which can prevent damage to the winding frame 221 or instability of the winding frame 221 during welding, fusion or bonding.

[0065] Please see Figure 5 In some embodiments, the yoke 2111 includes a curved segment 21111 and a flat segment 21112. The curved segment 21111 is connected to the toothed portion 2112; the flat segment 21112 is connected to one side of the curved segment 21111, and the flat segment 21112 has a connecting portion 213 for connecting and fixing adjacent core bodies 211. Understandably, the contour of the curved segment 21111 is curved, not flat; the contour of the flat segment 21112 is flat. The connecting portion 213 on the flat segment 21112 facilitates positioning and docking when two adjacent core bodies 211 are connected, making welding or bonding operations easy and convenient.

[0066] Please see Figure 5 In some embodiments, the coil mechanism 22 includes a winding frame 221 connected to the iron core 211, and a connecting portion 213 is disposed between the winding frames 221 on two adjacent iron cores 211. Since the welding or bonding materials are usually different from the material of the iron core 211 itself, if the connecting portion 213 is not disposed between two adjacent winding frames 221, the welding or bonding materials can easily affect the magnetic circuit. In this embodiment, the connecting portion 213 is disposed between two adjacent winding frames 221, which can avoid affecting the magnetic circuit when welding or bonding the iron core 211. Furthermore, the connection portion 213 being disposed between two adjacent winding frames 221 can reduce the probability of damage to the coil assembly 222 or the winding frame 222 during welding or bonding.

[0067] Please see Figure 4and Figure 5 In some embodiments, the iron core 211 has a connecting portion 213, and a groove 2131 is formed on the outer periphery of the connecting portion 213. The groove 2131 is used to fix adjacent iron cores 211 with glue or welding. In this way, it is possible to avoid the flow of glue, welding wire, etc., which increases the size of the iron core 211, making it difficult to insert nail-shaped iron chips into the outer casing 30; at the same time, because it is located on the outer periphery of the iron core 211, it is convenient for users to weld, fuse, or bond adjacent iron cores 211.

[0068] In some embodiments, the connection method of two adjacent iron core bodies 211 includes at least one of the following: welding connection, fusion connection, snap-fit ​​connection, adhesive connection, etc. In this way, the connection of two adjacent iron core bodies 211 is simple and convenient.

[0069] Please see Figure 3 In some embodiments, the magnetic mechanism 12 includes a rotor core 121, a magnet 122, and a first limiting member 123. The rotor core 121 is passed through a shaft 11; the magnet 122 is disposed within the rotor core 121; and the first limiting member 123 is used to limit the magnet 122, which is located between the shaft 11 and the first limiting member 123. The first limiting member 123 reinforces and protects the magnet 122, ensuring that it will not fall off during normal use and preventing it from falling off during the swinging or rotating of the rotor 10. Furthermore, it effectively protects the magnet 122 under extreme drop conditions. For example, the first limiting member 123 can be integrally formed with the winding frame 221 to reduce the number of parts, thereby reducing product weight and volume, and lowering costs. In other embodiments, the first limiting member 123 may be omitted, and the magnet 122 may be limited by other components of the motor 100, such as by the winding frame 221 or the teeth 2112 of the iron core 211.

[0070] Please see Figure 3 In some embodiments, the number of magnets 122 includes at least two, and the number of first limiting members 123 includes two. The two first limiting members 123 are arranged axially spaced apart and used to limit the magnets 122. In this way, while ensuring that the magnets 122 can be effectively limited, the amount of first limiting members 123 can be reduced, which is beneficial to reduce costs and lighten the weight of the magnetic mechanism 12.

[0071] For example, the number of magnets 122 may include two, three, four or more.

[0072] Please see Figure 3In some embodiments, the rotor 10 can reciprocate relative to the stator 20 at large angles. The rotor 10 also includes a second limiting member 13, which is connected to the shaft 11 and limits the maximum angle of rotation of the shaft 11. Thus, the shaft 11 or the rotor 10 can reciprocate within a certain angle range, enabling the motor 100 to drive the cleaning component 201 to perform efficient cleaning of the oral cavity. In other embodiments, the second limiting member 13 may be omitted, and the rotor 10 can rotate freely 360°.

[0073] In some embodiments, the rotation angle range of the shaft 11 is [-30°, 30°], such as -30°, -10°, 10°, 30°, or any other suitable range between -30° and 30°. Exemplarily, the maximum movement angle of the shaft 11 or rotor 10 is ±30°. Exemplarily, the up-and-down sweeping angle of the oral cleaning device is generally within the range of ±15°, and the rotation angle range of the shaft 11 or rotor 10 is ±30°. This reduces the cogging torque of the motor 100, facilitates motor 100 control of rotation, and reduces power consumption. Simultaneously, it avoids noise caused by the contact and collision of the limiting components during oral cleaning, and limits the maximum rotation range of the oral cleaning device, preventing excessive sweeping angles when the current abnormally increases, which could easily damage the gums.

[0074] Please see Figure 6 In some embodiments, the second limiting member 13 includes a connecting body 131 and a limiting body 132. The connecting body 131 is connected to the shaft 11; the limiting body 132 protrudes from the connecting body 131 and is used to limit the rotation of the shaft 11. Thus, the structure of the second limiting member 13 is simple. Exemplarily, the shaft 11 and the second limiting member 13 move synchronously; when the shaft 11 rotates to a certain angle, the limiting body 132 can contact the core mechanism 21 or other components of the oral cleaning device 1000, so that the limiting body 132 and the shaft 11 rotate within a certain angle range, thereby limiting the rotation of the shaft 11 by the second limiting member 13.

[0075] In some embodiments, the number of limiting bodies 132 includes at least two, and the rotation angle range of the shaft 11 is determined according to the circumferential spacing between two adjacent limiting bodies 132. By adjusting the circumferential spacing between two adjacent limiting bodies 132, the maximum movement angle of the shaft 11 or the rotor 10 can be adjusted, thereby providing a wider swing angle for the realization of large-angle reciprocating motion of the rotor 10 relative to the stator 20.

[0076] Please see Figure 6In some embodiments, the number of limiting bodies 132 includes two, and the two limiting bodies 132 are symmetrically arranged on the connecting body 131. In this way, the number of times the second limiting member 13 contacts and collides with the iron core mechanism 21 or other components of the oral cleaning device 1000 can be more stable, so that the second limiting member 13 can more stably and reliably limit the rotation of the shaft 11.

[0077] In some embodiments, the outer contour dimension of the second limiting member 13 in the direction perpendicular to the shaft 11 is smaller than the dimension of the accommodating space 212 in the direction perpendicular to the shaft 11. Thus, at least a portion of the second limiting member 13 can be disposed within the accommodating space 212, allowing the second limiting member 13 to cooperate with the core mechanism 21 to limit the rotation of the shaft 11. For example, the outer contour dimension of the second limiting member 13 in the direction perpendicular to the shaft 11 is smaller than the width of the inner diameter of the housing 30 of the motor 100.

[0078] Please see Figure 3 In some embodiments, the motor 100 further includes a housing 30 and an end cover 40, with the stator 20 and at least a portion of the rotor 10 disposed within the housing 30; the end cover 40 is connected to the housing 30, and the shaft 11 of the rotor 10 passes through the housing 30 and the end cover 40, allowing the shaft 11 to rotate relative to the end cover 40; the end cover 40 is provided with terminals (not shown), which are connected to the coil mechanism 22. Thus, the enameled wire leading from the coil mechanism 22 can be wound around the terminals, not only fixing the lead wire but also facilitating automated welding, thus enabling mass automated production of the product.

[0079] For example, the bearing is first assembled into the housing 30 to form a housing assembly, then the wound stator 20 is inserted into the housing assembly, then the rotor 10 is placed in, and finally the motor 100 is sealed by the end cover 40.

[0080] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. 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, and they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

Claims

1. A motor for an oral hygiene device, characterized in that, The motor includes: A rotor, the rotor comprising a shaft and a magnetic mechanism, the shaft passing through the magnetic mechanism; The stator includes an iron core mechanism and a coil mechanism, with the coil mechanism disposed within the iron core mechanism; when the coil mechanism is energized, the magnetic mechanism can drive the shaft to reciprocate relative to the stator under the action of magnetic force, thereby generating vibration; The core mechanism includes multiple separately arranged core bodies, which are arranged circumferentially and connected to each other so that the multiple core bodies enclose a receiving space for accommodating the rotor.

2. The motor according to claim 1, characterized in that, The iron core includes a yoke and a toothed portion, the yoke being connected to the toothed portion, the coil mechanism being disposed on the toothed portion, and the yokes of multiple iron cores being arranged circumferentially; the yokes of adjacent iron cores are connected so that multiple iron cores cooperate to form a cylindrical structure.

3. The motor according to claim 2, characterized in that, The number of iron cores includes two, and the two iron cores are connected and cooperate to form the cylindrical structure.

4. The motor according to claim 2, characterized in that, The yoke has a connecting portion for connecting and fixing adjacent iron cores.

5. The motor according to claim 2, characterized in that, The yoke includes: The curved section connects to the toothed portion; A planar segment is connected to one side of the curved segment, and the planar segment has a connecting portion for connecting and fixing adjacent iron core bodies.

6. The motor according to claim 4, characterized in that, The coil mechanism includes a winding frame connected to the iron core, and the connecting part is located between the winding frames on two adjacent iron cores.

7. The motor according to claim 1, characterized in that, The iron core has a connecting portion, and a groove is formed on the outer periphery of the connecting portion. The groove is used to fix adjacent iron cores with glue or welding.

8. The motor according to claim 1, characterized in that, The coil mechanism includes: A winding frame is connected to the iron core body; The coil assembly is disposed on the winding frame; The winding frame is either an integrally formed structure or it comprises two separately arranged winding sections, which are respectively connected to the same iron core.

9. The motor according to claim 1, characterized in that, The connection method of two adjacent iron cores includes at least one of the following: welding connection, fusion connection, snap-fit ​​connection, and adhesive connection.

10. The motor according to claim 1, characterized in that, The magnetic mechanism includes: Rotor core, through which the shaft passes; Magnets are disposed in the rotor core; A first limiting member is used to limit the magnet, and the magnet is disposed between the shaft and the first limiting member.

11. The motor according to claim 1, characterized in that, The rotor is capable of reciprocating at large angles relative to the stator, and the rotor further includes: The second limiting member is connected to the shaft and is used to limit the maximum angle of rotation of the shaft.

12. The motor according to claim 11, characterized in that, The rotation angle range of the shaft is [-30°, 30°].

13. The motor according to claim 11, characterized in that, The second limiting member includes: Connector body, connected to the shaft body; A limiting body protrudes from the connecting body and is used to restrict the rotation of the shaft.

14. The motor according to claim 11, characterized in that, The outer contour dimension of the second limiting member in the direction perpendicular to the shaft is smaller than the dimension of the accommodating space in the direction perpendicular to the shaft.

15. The motor according to any one of claims 1-14, characterized in that, The motor also includes: The housing, wherein the stator and at least a portion of the rotor are disposed within the housing; An end cap is connected to the outer casing. The shaft of the rotor passes through the outer casing and the end cap, and the shaft is rotatable relative to the end cap. The end cap is provided with a terminal block, which is connected to the coil mechanism.

16. An oral hygiene device, characterized in that, Including the motor as described in any one of claims 1-15.

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