Electric toothbrush and vibration sweeping motor thereof

Abstract

The utility model discloses an electric toothbrush and a vibration sweeping motor thereof, the vibration sweeping motor comprises a shell assembly, a stator assembly and a rotor assembly, and the stator assembly is arranged in the shell assembly; the rotor assembly is arranged in the stator assembly and rotationally connected with the shell assembly, the rotor assembly and the stator assembly are arranged in a spaced mode, and the stator assembly and the rotor assembly are used for generating magnetic field force so that the rotor assembly can rotate; the side, close to the stator assembly, of the shell assembly is provided with a positioning piece, and the stator rubber piece is provided with a positioning groove. Or the side, close to the shell assembly 1, of the stator assembly is provided with a positioning piece, and the shell assembly is provided with a positioning groove; the positioning piece is arranged in the positioning groove and matched with the positioning groove in a limiting mode. Compared with the prior art, during assembling, the stator assembly is fixedly installed through positioning cooperation of the positioning groove and the positioning piece, meanwhile, the positioning piece is limited through the positioning groove, relative rotation between the stator assembly and the shell assembly is prevented, and the slipping condition is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of electric toothbrushes, and in particular to an electric toothbrush and a sweeping motor thereof. Background Art

[0002] Electric toothbrushes are very popular personal oral hygiene care products in recent years. They use the high-speed vibration of the electric motor to generate a flowing cleaning force, which can more effectively remove plaque and food debris on the teeth, achieving better cleaning effects than traditional manual toothbrushes.

[0003] The existing toothbrush motor is usually cylindrical in size and relatively small in size. The stator assembly and the housing are generally fixed by gluing. Under the vibration of the motor, the stator assembly and the housing are prone to slipping. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides an electric toothbrush and a sweeping motor thereof, which can prevent the stator assembly and the housing from slipping.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0006] A sweeping motor comprises a shell assembly, a stator assembly and a rotor assembly, wherein the stator assembly is arranged inside the shell assembly, the stator assembly comprises a stator core and a stator rubber part, the stator core is installed on the stator rubber part, the stator core is used for winding coil windings, and the stator rubber part is used to space the stator core and the coil windings; the rotor assembly is arranged inside the stator assembly and is rotatably connected to the shell assembly, the rotor assembly and the stator assembly are spaced apart, the stator assembly and the rotor assembly are used to generate a magnetic field force to rotate the rotor assembly, and the rotor assembly is used to connect a brush handle; wherein a positioning piece is provided on a side of the shell assembly close to the stator assembly, and a positioning groove is provided on the stator rubber part; or a positioning piece is provided on a side of the stator assembly close to the shell assembly, and a positioning groove is provided on the shell assembly; the positioning piece is provided in the positioning groove and is limitedly matched with the positioning groove.

[0007] As one embodiment, the sweeping motor further includes an auxiliary winding assembly, wherein the auxiliary winding assembly includes at least one ejector pin, wherein the ejector pin is connected to the bottom of the stator rubber component and extends away from the stator rubber component, and wherein the ejector pin is used to wind the coil winding.

[0008] As one embodiment, the housing assembly includes a shell and a base, the base is connected to the bottom of the shell, and the rotor assembly is rotatably connected to the base and the shell respectively;

[0009] The sweeping motor also includes a monitoring component, which includes a feedback component and a sensing component. The feedback component is connected to the rotor component, the sensing component is connected to the base and is spaced apart from the feedback component, and the sensing component is used to detect the rotation angle of the feedback component.

[0010] As one embodiment, the base includes an insertion portion and a fixing portion that are connected to each other along its axial direction, the insertion portion extends into the shell and is plugged into the shell, the fixing portion is connected to the sensing element on a side away from the insertion portion, and the fixing portion is provided with a plurality of fixing grooves along its circumference, and the fixing grooves are used to fix the base and the shell.

[0011] As one embodiment, the housing assembly includes a bearing and a sleeve, the base is provided with a first mounting groove, the bearing is arranged in the first mounting groove and abuts against the bottom of the first mounting groove, the sleeve is connected to the outer periphery of the rotor assembly, the rotor assembly passes through the bearing and is rotatably connected to the bearing, and the sleeve abuts against the bearing.

[0012] As one embodiment, the base is further provided with a second mounting groove connected to the first mounting groove, one end of the rotor assembly passes through the bearing and extends into the second mounting groove, and the other end extends out of the housing and is used to connect to the brush handle;

[0013] The feedback member is connected to one end of the rotor assembly extending into the second installation slot, the induction member is connected to a side of the base facing away from the rotor assembly, and the induction member at least partially extends into the second installation slot.

[0014] As one implementation manner, the monitoring assembly includes an adjusting gasket, which is provided between the bearing and the feedback member, and is used to adjust the position of the feedback member on the rotor assembly.

[0015] As one embodiment, the shell assembly includes a fixing member, at least one first fixing hole is formed on the side of the base facing away from the shell, and at least one second fixing hole is formed on the sensing member. The fixing member passes through the second fixing hole and is connected to the first fixing hole to fix the sensing member and the base.

[0016] As one embodiment, the shell assembly includes a fixing member, at least one first fixing hole is formed on the side of the base facing away from the shell, and at least one second fixing hole is formed on the sensing member. The fixing member passes through the second fixing hole and is connected to the first fixing hole to fix the sensing member and the base.

[0017] As one embodiment, the shell assembly includes a first side surface and a second side surface connected to each other along its circumference, and one of the first side surface and the second side surface is a plane; the stator assembly includes a third side surface and a fourth side surface connected to each other along its circumference, and one of the third side surface and the fourth side surface is a plane.

[0018] Another object of the present utility model is to provide an electric toothbrush, comprising a brush handle and the sweeping motor in any one of the above embodiments, wherein the brush handle is connected to the rotor assembly of the sweeping motor.

[0019] The beneficial effects of the utility model are as follows: the embodiment of the present application provides an electric toothbrush and a sweeping motor thereof, the sweeping motor comprising a shell assembly, a stator assembly and a rotor assembly, the stator assembly being arranged inside the shell assembly, the stator assembly comprising a stator core and a stator rubber part, the stator core being installed on the stator rubber part, the stator core being used for winding the coil winding, the stator rubber part being used for spacing the stator core and the coil winding; the rotor assembly being arranged inside the stator assembly and being rotatably connected with the shell assembly, the rotor assembly being spaced apart from the stator assembly, the stator assembly and the rotor assembly being used for generating a magnetic field force to rotate the rotor assembly, and the rotor assembly being used for connecting the brush handle; wherein, a positioning piece is provided on a side of the shell assembly close to the stator assembly, and a positioning groove is provided on the stator rubber part; or a positioning piece is provided on a side of the stator assembly close to the shell assembly 1, and a positioning groove is provided on the shell assembly; the positioning piece is provided in the positioning groove and is limitedly matched with the positioning groove. Compared with the prior art, the housing assembly of the present application is provided with a positioning piece, and the stator rubber part is provided with a positioning groove. During assembly, the positioning groove and the positioning piece are positioned and matched to achieve fixed installation of the stator assembly and the housing assembly. At the same time, the positioning groove limits the positioning piece to prevent relative rotation between the stator assembly and the housing assembly, thereby avoiding slipping. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 An exploded schematic diagram of parts of a sweeping motor according to an embodiment of the utility model is shown;

[0021] Figure 2 A cross-sectional schematic diagram of a housing assembly according to an embodiment of the utility model is shown;

[0022] Figure 3 A schematic structural diagram of a sweeping motor according to an embodiment of the utility model is shown;

[0023] Figure 4 A cross-sectional schematic diagram of a sweeping motor according to an embodiment of the utility model is shown;

[0024] Figure 5 The schematic diagram of the parts explosion of the stator assembly in the embodiment of the utility model is shown;

[0025] Figure 6An exploded schematic diagram of parts of a sweeping motor according to an embodiment of the utility model is shown;

[0026] Figure 7 for Figure 4 The enlarged view of point A in the middle;

[0027] Figure 8 An exploded schematic diagram of another part of a sweeping motor according to an embodiment of the utility model is shown;

[0028] Fig. 9 Another cross-sectional schematic diagram of a sweeping motor according to an embodiment of the utility model is shown;

[0029] Fig.10 A cross-sectional schematic diagram of a stator assembly in an embodiment of the utility model is shown.

[0030] Reference numerals:

[0031] 100, sweeping motor; 1, housing assembly; 11, housing; 12, base; 13, first side surface; 14, second side surface; 15, bearing; 16, bushing; 17, positioning member; 121, inserting portion; 122, fixing portion; 123, fixing groove; 124, first mounting groove; 125, second mounting groove; 126, first fixing hole; 127, first avoidance groove;

[0032] 2. stator assembly; 21. stator core; 22. stator rubber part; 23. third side surface; 24. fourth side surface; 221. positioning groove;

[0033] 3. rotor assembly; 31. rotating shaft; 32. rotor core; 33. rotor pole;

[0034] 4. Auxiliary winding assembly; 41. Ejector pin;

[0035] 5. Monitoring component; 51. Feedback component; 52. Sensing component; 53. Adjusting gasket; 521. Second fixing hole; 522. Second avoidance groove; 523. Sensor; 524. Circuit board. DETAILED DESCRIPTION

[0036] In the present invention, the terms "disposed", "provided with", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] The orientation or position relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "radial", "circumferential", etc. are based on the orientation or position relationship shown in the drawings and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0038] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0039] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those skilled in the art, the specific meanings of these terms in this utility model can be understood according to specific circumstances.

[0040] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0041] See also Figure 1 An embodiment of the present application provides an electric toothbrush, including a sweeping vibration motor 100 and a brush handle (not shown in the figure), the brush handle is connected to the driving end of the sweeping vibration motor 100, and the sweeping vibration motor 100 is used to drive the brush handle to rotate.

[0042] In actual application, a brush head is connected to the brush handle. When in use, the sweeping motor 100 is set to a rotation angle, and the sweeping motor 100 drives the brush handle to reciprocate within the angle range. The brush handle drives the brush head to rotate to achieve the effect of automatic brushing.

[0043] It should be noted that the electric toothbrush also includes a body, and the sweeping motor 100 is installed in the body.

[0044] See also Figure 1 , Figure 2 and Figure 3The above-mentioned sweeping motor 100 includes a housing assembly 1, a stator assembly 2 and a rotor assembly 3. The stator assembly 2 is arranged inside the housing assembly 1. The stator assembly 2 includes a stator core 21 and a stator rubber part 22. The stator core 21 is installed on the stator rubber part 22. The stator core 21 is used for winding the coil winding. The stator rubber part 22 is used to separate the stator core 21 and the coil winding. The rotor assembly 3 is arranged inside the stator assembly 2 and is rotatably connected with the housing assembly 1. The rotor assembly 3 is spaced apart from the stator assembly 2. The stator assembly 2 and the rotor assembly 3 are used to generate a magnetic field force to rotate the rotor assembly 3. The rotor assembly 3 is used to connect the brush handle. Among them, a positioning member 17 is provided on the side of the housing assembly 1 close to the stator assembly 2, and a positioning groove 221 is provided on the stator rubber part 22; or a positioning member 17 is provided on the side of the stator assembly 2 close to the housing assembly 1, and a positioning groove 221 is provided on the housing assembly 1; the positioning member 17 is provided in the positioning groove 221 and is limitedly matched with the positioning groove 221.

[0045] In practical applications, in order to facilitate the assembly of the stator assembly 2 and the shell assembly 1, a positioning piece 17 is provided on the side of the shell assembly 1 close to the stator assembly 2, and a positioning groove 221 is provided on the stator rubber part 22. During assembly, the positioning groove 221 is positioned and matched with the positioning piece 17 to achieve fixed installation of the stator assembly 2. At the same time, the positioning groove 221 limits the positioning piece 17 to prevent relative rotation between the stator assembly 2 and the shell assembly 1, thereby avoiding slipping.

[0046] In one embodiment, the rotor assembly 3 includes a rotating shaft 31, a rotor core 32 and a rotor pole 33. The rotating shaft 31 is rotatably connected to the housing assembly 1. The rotor core 32 is sleeved on the outer periphery of the rotating shaft 31 and connected to the rotating shaft 31. The outer side of the rotor core 32 is connected to the rotor pole 33. The rotor pole 33 is arranged opposite to the stator core 21 at an interval. When current passes through the coil winding, the coil winding generates a stator magnetic field to act on the rotor pole 33. The magnetic field generated by the rotor pole 33 interacts with the stator magnetic field, thereby generating a torque to rotate the rotor core 32, thereby driving the rotating shaft 31 to rotate. The brush handle is connected to the rotating shaft 31, and the rotation of the rotating shaft 31 drives the brush handle to rotate, thereby achieving the effect of automatic brushing.

[0047] In one embodiment, the sweeping motor 100 can adopt a 6-slot 4-pole mode. Specifically, the stator core 21 is provided with 6 slots for placing the coil windings, and the rotor assembly 3 is provided with 4 rotor poles 33. The motor configured in this way can realize the circular rotation of the rotating shaft 31, and then realize the circular rotation of the brush handle.

[0048] It is understandable that in some other embodiments, the sweeping motor 100 may also adopt other methods to satisfy the circular motion of the rotating shaft 31 .

[0049] See also Figure 4 and Figure 5 The sweeping motor 100 further includes an auxiliary winding assembly 4, which includes at least one ejector pin 41, which is connected to the bottom of the stator rubber component 22 and extends in a direction away from the stator rubber component 22, and is used for winding the coil winding.

[0050] It should be noted that the stator magnetic field is generated by the combined action of the coil and the iron core, so the coil needs to be wound around the stator iron core 21, and the end and tail of each coil need to be connected to form a closed loop.

[0051] In the prior art, when the stator core 21 of the electric toothbrush is wound with a coil, due to the limited size, the ends and tails of the coil need to be manually wound and connected, which is troublesome, time-consuming and laborious. In order to facilitate the connection of the ends and tails of the coil, the present application provides an ejector pin 41, which is connected to the bottom of the stator rubber part 22. After the coil is wound, the winding machine can directly wind the ends and tails on the ejector pin 41. Compared with the prior art, the present application provides an ejector pin 41, which provides a location for connecting the ends and tails of the coil, which facilitates the winding machine to wind the ends and tails, eliminates the manual winding process, saves labor costs, realizes production automation, and improves work efficiency.

[0052] It is understandable that the number of the ejector pins 41 generally corresponds to the number of coil windings. For example, a three-phase motor has three independent coil windings, so the number of the ejector pins 41 can also be set to three.

[0053] See also Figure 6 The shell assembly 1 includes a shell 11 and a base 12, the base 12 is connected to the bottom of the shell 11, and the rotor assembly 3 is rotatably connected to the base 12 and the shell 11 respectively; the sweeping motor 100 also includes a monitoring assembly 5, the monitoring assembly 5 includes a feedback member 51 and a sensing member 52, the feedback member 51 is connected to the rotor assembly 3, the sensing member 52 is connected to the base 12 and is spaced apart from the feedback member 51, and the sensing member 52 is used to detect the rotation angle of the feedback member 51.

[0054] In actual application, the rotor assembly 3 is rotationally connected to the base 12 and the shell 11 respectively. Specifically, one end of the rotating shaft 31 is rotationally connected to the base 12, and the other end is rotationally connected to the shell 11. The feedback member 51 is connected to the end of the rotating shaft 31 close to the base 12, so as to follow the rotation of the rotating shaft 31. The sensor 52 is used to detect the rotation angle of the feedback member 51 to identify the current absolute position of the rotating shaft 31, and then obtain the position of the brush handle. The sensor 52 transmits the rotation information to the control system. The control system controls the frequency and amplitude of the rotation by analyzing the rotation information, thereby realizing the function of automatically adjusting the amplitude and frequency of the electric toothbrush.

[0055] See again Figure 6The base 12 includes an inserting portion 121 and a fixing portion 122 that are connected to each other along its axial direction. The inserting portion 121 extends into the shell 11 and is plugged into the shell 11. The fixing portion 122 is connected to the sensing element 52 on the side away from the inserting portion 121. The fixing portion 122 is provided with a plurality of fixing grooves 123 along its circumference. The fixing grooves 123 are used to fix the base 12 and the shell 11.

[0056] The insertion portion 121 of the base 12 extends into the shell 11 and is plugged into the shell 11, thereby enhancing the stability of the connection between the base 12 and the shell 11 and preventing the base 12 and the shell 11 from being separated when the sweeping vibration motor 100 falls accidentally; at the same time, the fixing portion 122 is provided with a plurality of fixing grooves 123 along its circumference for fixing the base 12 and the shell 11, so that the base 12 and the shell 11 can be connected in the form of mechanical flanging and riveting. Specifically, the edge of the shell 11 is bent in a direction close to the fixing groove 123 to form a flanging, which is abutted against the base 12, and then the flanging and the base 12 are fixed together with rivets. With this connection method, the connection between the shell 11 and the base 12 is more stable, effectively enhancing the structural strength of the sweeping vibration motor 100.

[0057] At the same time, the sensing component 52 is connected to the side of the fixing portion 122 away from the insertion portion 121, that is, the sensing component 52 is located outside the shell assembly 1. The sensing component 52 can be repaired and disassembled by simply removing the sweeping motor 100 from the electric toothbrush. The operation is convenient and the structure is simple.

[0058] See again Figure 6 Furthermore, the housing assembly 1 includes a fixing member (not shown in the figure), at least one first fixing hole 126 is provided on the side of the base 12 facing away from the housing 11, and at least one second fixing hole 521 is provided on the sensing member 52, and the fixing member passes through the second fixing hole 521 and is connected to the first fixing hole 126 to fix the sensing member 52 and the base 12. The base 12 of the present application has a first fixing hole 126, and the fixing member passes through the second fixing hole 521 and is connected to the first fixing hole 126, so that the installation and fixation of the sensing member 52 is achieved. In this way, the device does not need to set up an additional mounting structure to fix the sensing member 52, saving production costs and assembly processes.

[0059] It is understandable that, since the sensing element 52 is an electrical component, the base 12 can be made of an insulating material. Specifically, the base 12 can be made of a composite material of polyamide 66 and glass fiber to prevent the base 12 from affecting the function of the sensing element 52. At the same time, this material has low water absorption and improves stability in a humid environment. In some other embodiments, the base 12 can also be made of other insulating materials.

[0060] See also Figure 7The housing assembly 1 further comprises a bearing 15 and a sleeve 16. The base 12 is provided with a first mounting groove 124. The bearing 15 is arranged in the first mounting groove 124 and abuts against the bottom of the first mounting groove 124. The sleeve 16 is connected to the outer periphery of the rotor assembly 3. The rotor assembly 3 passes through the bearing 15 and is rotatably connected with the bearing 15. The sleeve 16 abuts against the bearing 15.

[0061] In actual application, a bearing 15 is provided in the first mounting groove 124, and a shaft sleeve 16 is connected to the rotating shaft 31 of the rotor assembly 3. The rotating shaft 31 passes through the bearing 15 and extends into the base 12. At the same time, the shaft sleeve 16 abuts against the bearing 15 to limit the axial position of the rotating shaft 31, thereby limiting the depth of the rotating shaft 31 extending into the base 12 and preventing the rotating shaft 31 from touching the sensing element 52.

[0062] It is understandable that a bearing 15 may be provided between the rotating shaft 31 and the housing 11 , and the rotating shaft 31 abuts against the housing 11 , so that the housing 11 and the base 12 axially limit the rotating shaft 31 , thereby completing the axial fixation of the rotating shaft 31 .

[0063] See again Figure 7 The base 12 is also provided with a second mounting groove 125 connected with the first mounting groove 124. One end of the rotor assembly 3 passes through the bearing 15 and extends into the second mounting groove 125, and the other end extends out of the housing 11 and is used to connect the brush handle; the feedback member 51 is connected to one end of the rotor assembly 3 extending into the second mounting groove 125, and the sensing member 52 is connected to the side of the base 12 away from the rotor assembly 3, and the sensing member 52 at least partially extends into the second mounting groove 125.

[0064] In one embodiment, the rotating shaft 31 of the rotor assembly 3 extends into the second mounting groove 125, and the feedback member 51 is connected to one end of the rotating shaft 31 extending into the second mounting groove 125; the sensing member 52 may include a circuit board 524 and a sensor 523, the sensor 523 is connected to a side of the circuit board 524 close to the base 12, the sensor 523 is electrically connected to the circuit board 524, the circuit board 524 is fixed to the base 12, and the sensor 523 extends into the second mounting groove 125, the sensor 523 is used to detect the rotation angle of the feedback member 51, and then identify the rotation position of the rotating shaft 31. In this way, the second mounting groove 125 provides an independent space for the feedback member 51 and the sensor 523 to monitor information, reducing the influence of other components on the detection of the sensor 523, and the sensor 523 can detect the position information of the feedback member 51 in the first time, thereby improving the accuracy of information detection and the recognition speed.

[0065] See again Figure 7The monitoring component 5 also includes an adjusting gasket 53 . An adjusting gasket 53 is provided between the bearing 15 and the feedback member 51 . The adjusting gasket 53 is used to adjust the position of the feedback member 51 on the rotor component 3 .

[0066] In actual application, the rotating shaft 31 of the rotor assembly 3 is provided with a bearing 15, an adjusting gasket 53 and a feedback member 51 in sequence from top to bottom along its axial direction. The feedback member 51 is in contact with the adjusting gasket 53. By changing the thickness of the adjusting gasket 53, the height of the feedback member 51 on the rotating shaft 31 can be adjusted, and then the relative distance between the feedback member 51 and the sensing member 52 can be adjusted. At the same time, the gasket 53 is adjusted to separate the bearing 15 from the feedback member 51 to prevent the metal bearing 15 from affecting the information transmission function of the feedback member 51.

[0067] See also Figure 8 In one embodiment, the base 12 is provided with a first avoidance groove 127 , and the sensing member 52 is provided with a second avoidance groove 522 opposite to the first avoidance groove 127 . The first avoidance groove 127 is used to avoid the ejector pin 41 , and the second avoidance groove 522 is used to engage with the ejector pin 41 .

[0068] In actual application, the winding machine winds the end and tail of the coil on the ejector pin 41. Since the coil is a flexible structure and is easy to move on the ejector pin 41, the ejector pin 41 is stuck in the second avoidance groove 522. At this time, the coil on the ejector pin 41 abuts against the edge of the second avoidance groove 522, which limits the movement of the coil on the ejector pin 41 and makes the winding of the coil more stable.

[0069] See also Fig. 9 and Fig.10 In one embodiment, in addition to using the above-mentioned positioning member 17 and positioning groove 221 to position the stator assembly 2 and the housing assembly 1, the following structure can also be used for positioning: the housing assembly 1 includes a first side surface 13 and a second side surface 14 connected to each other along its circumference, and one of the first side surface 13 and the second side surface 14 is a plane; the stator assembly 2 includes a third side surface 23 and a fourth side surface 24 connected to each other along its circumference, and one of the third side surface 23 and the fourth side surface 24 is a plane.

[0070] The sweeping motor 100 in the prior art is usually circular. With this design, when the sweeping motor 100 is assembled on the fuselage, the circular motor is not easy to fix and the fixing method is relatively complicated. At the same time, the fixation between the circular shell assembly 1 and the stator is also prone to slipping. Based on this, the present application sets at least one outer side surface of the shell assembly 1 as a plane, for example, the first side surface 13 is set as a plane. Similarly, the third side surface 23 of the stator assembly 2 is also a plane. When installing the stator assembly 2, the third side surface 23 is opposite to the first side surface 13. In this way, the stator assembly 2 is effectively prevented from rotating relative to the shell assembly 1. Since the first side surface 13 is a plane, it is beneficial to fix the sweeping motor 100 in the fuselage, and the fixing method is simplified to improve work efficiency.

[0071] It is understandable that the stator assembly 2 and the housing assembly 1 can be positioned by using the positioning member 17 and the positioning groove 221, or by using the above-mentioned side surface as a plane. Of course, positioning can also be achieved by using both methods.

[0072] In one embodiment, the housing assembly 1 may be provided with a plurality of first side surfaces 13 evenly spaced along its circumference, and the stator assembly 2 may be provided with a plurality of third side surfaces 23 evenly spaced along its circumference. In this way, the more planes there are, the more stable the installation of the housing assembly 1 is.

[0073] Different from the prior art, the embodiment of the present application provides an electric toothbrush and a sweeping motor 100 thereof. The sweeping motor 100 includes a housing assembly 1, a stator assembly 2 and a rotor assembly 3. The stator assembly 2 is arranged inside the housing assembly 1. The stator assembly 2 includes a stator core 21 and a stator rubber part 22. The stator core 21 is installed on the stator rubber part 22. The stator core 21 is used for winding the coil winding. The stator rubber part 22 is used to space the stator core 21 and the coil winding. The rotor assembly 3 is arranged inside the stator assembly 2 and is connected to the housing assembly 1. Rotational connection, the rotor assembly 3 and the stator assembly 2 are arranged at intervals, the stator assembly 2 and the rotor assembly 3 are used to generate a magnetic field force to rotate the rotor assembly 3, and the rotor assembly 3 is used to connect the brush handle; wherein, a positioning member 17 is provided on the side of the housing assembly 1 close to the stator assembly 2, and a positioning groove 221 is provided on the stator rubber member 22; or a positioning member 17 is provided on the side of the stator assembly 2 close to the housing assembly 1, and a positioning groove 221 is provided on the housing assembly 1; the positioning member 17 is provided in the positioning groove 221 and is limitedly matched with the positioning groove 221. Compared with the prior art, the housing assembly 1 of the present application is provided with a positioning member 17, and the stator rubber member 22 is provided with a positioning groove 221. During assembly, the positioning groove 221 is positioned and matched with the positioning member 17 to achieve fixed installation of the stator assembly 2 and the housing assembly 1, and at the same time, the positioning groove 221 limits the positioning member 17 to prevent the stator assembly 2 and the housing assembly 1 from rotating relative to each other and avoid slipping.

[0074] The above is only a specific implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A sweeping motor (100) for an electric toothbrush, characterized in that: include: Housing assembly (1); A stator assembly (2) is arranged inside the housing assembly (1), the stator assembly (2) comprising a stator core (21) and a stator rubber component (22), the stator core (21) is mounted on the stator rubber component (22), the stator core (21) is used for winding the coil winding, and the stator rubber component (22) is used to space the stator core (21) and the coil winding; A rotor assembly (3) is arranged inside the stator assembly (2) and is rotatably connected to the housing assembly (1); the rotor assembly (3) and the stator assembly (2) are arranged at a distance; the stator assembly (2) and the rotor assembly (3) are used to generate a magnetic field force so as to rotate the rotor assembly (3); and the rotor assembly (3) is used to connect to a brush handle; Wherein, a positioning piece (17) is provided on a side of the housing component (1) close to the stator component (2), and a positioning groove (221) is provided on the stator rubber component (22); or a positioning piece (17) is provided on a side of the stator component (2) close to the housing component (1), and a positioning groove (221) is provided on the housing component (1); The positioning member (17) is disposed in the positioning groove (221) and is limitedly matched with the positioning groove (221).

2. The sweeping motor (100) according to claim 1, characterized in that: The sweeping motor (100) further comprises an auxiliary winding assembly (4), wherein the auxiliary winding assembly (4) comprises at least one ejector pin (41), wherein the ejector pin (41) is connected to the bottom of the stator rubber component (22) and extends in a direction away from the stator rubber component (22), and wherein the ejector pin (41) is used to wind the coil winding.

3. The sweeping motor (100) according to claim 1, characterized in that: The housing assembly (1) comprises an outer shell (11) and a base (12), wherein the base (12) is connected to the bottom of the outer shell (11), and the rotor assembly (3) is rotatably connected to the base (12) and the outer shell (11) respectively; The sweeping motor (100) further comprises a monitoring component (5), wherein the monitoring component (5) comprises a feedback component (51) and a sensing component (52), wherein the feedback component (51) is connected to the rotor component (3), and the sensing component (52) is connected to the base (12) and is spaced apart from the feedback component (51), and the sensing component (52) is used to detect the rotation angle of the feedback component (51).

4. The sweeping motor (100) according to claim 3, characterized in that: The base (12) comprises an insertion portion (121) and a fixing portion (122) which are connected to each other along its axial direction; the insertion portion (121) extends into the shell (11) and is plugged into the shell (11); the fixing portion (122) is connected to the sensing element (52) on a side facing away from the insertion portion (121); the fixing portion (122) is provided with a plurality of fixing grooves (123) along its circumference; the fixing grooves (123) are used to fix the base (12) and the shell (11).

5. The sweeping motor (100) according to claim 3, characterized in that: The housing assembly (1) comprises a bearing (15) and a sleeve (16); the base (12) is provided with a first mounting groove (124); the bearing (15) is arranged in the first mounting groove (124) and abuts against the bottom of the first mounting groove (124); the sleeve (16) is connected to the outer periphery of the rotor assembly (3); the rotor assembly (3) passes through the bearing (15) and is rotatably connected to the bearing (15); and the sleeve (16) abuts against the bearing (15).

6. The sweeping motor (100) according to claim 5, characterized in that: The base (12) is further provided with a second mounting groove (125) connected to the first mounting groove (124); one end of the rotor assembly (3) passes through the bearing (15) and extends into the second mounting groove (125); the other end extends out of the housing (11) and is used to connect to the brush handle; The feedback member (51) is connected to one end of the rotor assembly (3) extending into the second mounting groove (125), the sensing member (52) is connected to a side of the base (12) facing away from the rotor assembly (3), and the sensing member (52) at least partially extends into the second mounting groove (125).

7. The sweeping motor (100) according to claim 6, characterized in that: The monitoring component (5) comprises an adjusting gasket (53), which is arranged between the bearing (15) and the feedback member (51), and the adjusting gasket (53) is used to adjust the position of the feedback member (51) on the rotor component (3).

8. The sweeping motor (100) according to claim 3, characterized in that: The housing assembly (1) comprises a fixing member, at least one first fixing hole (126) is formed on a side of the base (12) facing away from the housing (11), and at least one second fixing hole (521) is formed on the sensing member (52), and the fixing member passes through the second fixing hole (521) and is connected to the first fixing hole (126) to fix the sensing member (52) and the base (12).

9. The sweeping motor (100) according to claim 1, characterized in that: The housing assembly (1) includes a first side surface (13) and a second side surface (14) connected to each other along its circumference, and one of the first side surface (13) and the second side surface (14) is a plane; the stator assembly (2) includes a third side surface (23) and a fourth side surface (24) connected to each other along its circumference, and one of the third side surface (23) and the fourth side surface (24) is a plane.

10. An electric toothbrush, characterized in that: It comprises the sweeping vibration motor (100) as claimed in any one of claims 1 to 9 and a brush handle, wherein the brush handle is connected to the rotor assembly (3) of the sweeping vibration motor (100).

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