Motor and electric toothbrush

Abstract

The utility model discloses a motor and an electric toothbrush. The motor comprises a motor body and a position detection device. The motor body comprises a motor shell, a bearing and a motor shaft, the bearing is installed on the motor shell, the motor shaft is installed on the motor shell and penetrates through the bearing, and the motor shaft can rotate with the axis of the motor shaft as the axis. The position detection device comprises a fixing assembly, a first induction piece and a second induction piece, the fixing assembly is rigidly connected with one end of the motor shell, the first induction piece is fixedly installed on the motor shaft, the second induction piece is fixedly installed on the fixing assembly and is spaced from the first induction piece, and the first induction piece and the second induction piece are matched to detect the movement position of the motor shaft. According to the motor provided by the embodiment of the invention, under the condition that the motor shaft rotates, the second induction piece can accurately induce the movement position of the first induction piece, and the induction between the first induction piece and the second induction piece is relatively accurate, so that the detection result of the position detection device on the movement position of the motor shaft is relatively accurate.

Description

Technical Field

[0001] The present application relates to the technical field of electric toothbrushes, and more specifically, to a motor and an electric toothbrush. Background Art

[0002] At present, the application of electric toothbrushes has become more and more widespread. Electric toothbrushes make the brush head vibrate at high frequency through the rapid rotation or vibration of the motor core, instantly breaking down the toothpaste into fine foam, which penetrates into the teeth to clean. At the same time, the vibration of the bristles can promote blood circulation in the oral cavity and have a massage effect on the gum tissue. The current motor can drive the motor shaft to rotate, and the motor shaft housing drives the brush head to rotate, so that the brush head has a better cleaning effect on the oral cavity. The motor is usually provided with a detection device to detect the rotation angle of the motor shaft, so as to control the rotation angle of the brush head. However, due to reasons such as the high-frequency vibration of the motor, it is easy to cause the position of the detection device to shift, and the detection result of the detection device is prone to deviation, so that the control effect of the rotation angle of the brush head is poor. Utility Model Content

[0003] The embodiments of the present application provide a motor and an electric toothbrush, which are at least used to solve the problem that the position of the detection device is easily offset due to reasons such as the high-frequency vibration of the motor, the detection result of the detection device is easily deviated, and the control effect on the rotation angle of the brush head is poor.

[0004] The motor of the embodiment of the present application includes a motor body and a position detection device. The motor body includes a motor housing, a bearing and a motor shaft, the bearing is installed on the motor housing, the motor shaft is installed on the motor housing and penetrates the bearing, and the motor shaft can rotate around the axis of the motor shaft. The position detection device includes a fixed component, a first induction member and a second induction member, the fixed component is rigidly connected to one end of the motor housing, the first induction member is fixedly installed on the motor shaft, the second induction member is fixedly installed on the fixed component and is spaced from the first induction member, and the first induction member cooperates with the second induction member to detect the moving position of the motor shaft.

[0005] In some embodiments, the motor further includes a first fastener, which locks the motor housing and the fixing assembly along a radial direction of the motor shaft.

[0006] In some embodiments, the motor further includes a first fastener, which locks the motor housing and the fixing assembly along the axial direction of the motor shaft.

[0007] In some embodiments, the motor further includes a first fastener, which locks the motor housing and the fixing assembly along a radial direction of the motor shaft, and the first fastener locks the motor housing and the fixing assembly along an axial direction of the motor shaft.

[0008] In some embodiments, adhesive is provided between the first fastener and the motor housing.

[0009] In some embodiments, glue is provided between the first fastener and the fixing assembly.

[0010] In some embodiments, adhesive is provided between the first fastener and the motor housing, and adhesive is provided between the first fastener and the fixing assembly.

[0011] In some embodiments, the motor housing includes a barrel and a first end cover, the barrel includes a first end and a second end opposite to each other, the first end of the barrel is fixedly connected to the fixing assembly, the first end cover is installed on the first end of the barrel and at least partially extends into the fixing assembly, the first sensing member is sleeved on the motor shaft, and the first sensing member abuts against the first end cover.

[0012] In some embodiments, the motor housing includes a barrel and a first end cover, the barrel includes a first end and a second end opposite to each other, the first end of the barrel is fixedly connected to the fixing assembly, the first end cover is installed on the first end of the barrel and at least partially extends into the fixing assembly, and the first sensing member is sleeved on the motor shaft; the motor body also includes a gasket, which is sleeved on the motor shaft and located between the first sensing member and the first end cover, and the first sensing member is abutted against the first end cover through the gasket.

[0013] In some embodiments, the first induction member is a magnetic member, and the gasket is made of a magnetic isolation material.

[0014] In some embodiments, the first induction member is a magnetic member, and at least a portion of the motor shaft used to mount the first induction member is made of a magnetically isolating material.

[0015] In some embodiments, the first induction member is a magnetic member, the gasket is made of a magnetic-isolating material, and at least a portion of the motor shaft for mounting the first induction member is made of a magnetic-isolating material.

[0016] In some embodiments, the magnetic isolation material is copper or aluminum.

[0017] In some embodiments, the motor housing further includes a second end cover, which is disposed at the second end of the barrel and is integrally formed with the barrel.

[0018] In some embodiments, the first induction member is tightly matched with the motor shaft directly or indirectly.

[0019] In some embodiments, the first induction member is glued to the motor shaft directly or indirectly.

[0020] In some embodiments, the first induction member is directly or indirectly tightly matched with the motor shaft, and the first induction member is directly or indirectly glued to the motor shaft.

[0021] In some embodiments, the portion of the motor shaft for mounting the first induction member is a non-cylindrical body, and the first induction member is formed with a non-circular hole.

[0022] In some embodiments, the fixing assembly includes a positioning shell and a circuit board component, the second sensing element is fixedly installed on the circuit board component, the positioning shell includes a first end and a second end relative to each other, the first end of the positioning shell is fixedly connected to the motor shell, the second end of the positioning shell is provided with a first connecting hole, the circuit board component is provided with a second connecting hole, and a second fastener passes through the second connecting hole and is locked to the first connecting hole to fix the circuit board component to the second end of the positioning shell.

[0023] In some embodiments, glue is provided between the second fastener and the first connecting hole.

[0024] In some embodiments, glue is provided between the second fastener and the second connecting hole.

[0025] In some embodiments, adhesive is provided between the second fastener and the first connecting hole, and adhesive is provided between the second fastener and the second connecting hole.

[0026] In some embodiments, the second end of the positioning shell is further provided with a limiting surface recessed toward the motor body relative to the outer end surface of the positioning shell, the circuit board component is supported on the limiting surface, and the outer surface of the circuit board component does not exceed the outer end surface.

[0027] In some embodiments, the second end of the positioning shell is provided with a first positioning member, and the circuit board component is provided with a second positioning member, and the first positioning member cooperates with the second positioning member to position the circuit board component.

[0028] In some embodiments, the circuit board component is a hard circuit board, and the second induction element is disposed on a side of the hard circuit board facing the first induction element.

[0029] In some embodiments, the circuit board component is a hard-flex circuit board and includes a hard board portion and a soft board portion, and the second sensing element is disposed on a side of the hard board portion facing the first sensing element.

[0030] In some embodiments, the circuit board component includes a flexible circuit board and a reinforcement plate, the reinforcement plate is combined with the flexible circuit board and installed together at the second end of the positioning shell, the flexible circuit board is located on the side of the reinforcement plate facing the motor housing, and the second sensing element is arranged on the side of the flexible circuit board facing the first sensing element.

[0031] In some embodiments, the positioning housing and / or the motor housing are made of metal material.

[0032] The electric toothbrush of the embodiment of the present application includes a bracket assembly and the motor described in the above embodiment, and the motor is installed on the bracket assembly.

[0033] In certain embodiments, the motor housing forms a non-kinematic fit with the bracket assembly.

[0034] In certain embodiments, the fixation assembly forms a non-kinematic fit with the support assembly.

[0035] In some embodiments, the motor housing forms a non-movement fit with the bracket assembly, and the fixing assembly forms a non-movement fit with the bracket assembly.

[0036] In some embodiments, the electric toothbrush further includes a limit assembly, which is disposed between the motor and the bracket assembly, and the motor housing is connected to the bracket assembly via the limit assembly, and the limit assembly is used to limit the movement and / or rotation of the motor relative to the bracket assembly.

[0037] In some embodiments, the limit assembly includes a limit assembly and a constraint assembly, the motor includes a first end and a second end opposite to each other, the limit assembly is located on the side where the second end of the motor is located, and the constraint assembly is located on the side where the first end of the motor is located, and the motor forms a non-rotating fit with the bracket assembly through the limit assembly and / or the constraint assembly.

[0038] In some embodiments, the limiting assembly includes a limiting assembly, and the rotation limiting assembly includes a first limiting member and a second limiting member, one of the first limiting member and the second limiting member is arranged on the bracket assembly, and the other is arranged on the motor housing, and the first limiting member and the second limiting member cooperate to limit the relative rotation and / or relative movement of the motor housing and the bracket assembly.

[0039] In some embodiments, the limiting assembly includes a constraint assembly, which includes a first constraint member and a second constraint member, one of the first constraint member and the second constraint member is arranged on the bracket assembly, and the other is arranged on the positioning shell of the fixing assembly, and the first constraint member and the second constraint member cooperate to limit the relative rotation and / or relative movement of the positioning shell and the bracket assembly.

[0040] In some embodiments, the bracket assembly is formed with a bracket body and a cover body on the axial interface, the bracket body is provided with a first positioning groove, the cover body is provided with a second positioning groove, the first positioning groove and the second positioning groove together form an accommodating cavity, the motor is clamped in the accommodating cavity to limit the movement and / or rotation of the motor relative to the bracket assembly, and the cover body is fixedly mounted on the bracket body by a third fastener.

[0041] In some embodiments, glue is provided between the third fastener and the cover body.

[0042] In some embodiments, adhesive is provided between the third fastener and the bracket body.

[0043] In some embodiments, adhesive is provided between the third fastener and the cover body, and adhesive is provided between the third fastener and the bracket body.

[0044] In the motor and electric toothbrush of the embodiment of the present application, the first induction member is fixedly mounted on the motor shaft, the motor shaft is mounted on the motor housing, the second induction member is fixedly mounted on the fixing assembly, and the fixing assembly is rigidly connected to the motor housing. When the motor shaft moves, the second induction member can accurately sense the moving position of the first induction member, and the induction between the first induction member and the second induction member is relatively accurate, so that the position detection device has a relatively accurate detection result of the moving position of the motor shaft, which can improve the control effect of the brush head during rotation.

[0045] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0047] Figure 1 is a three-dimensional schematic diagram of a motor according to certain embodiments of the present application;

[0048] Figure 2 yes Figure 1 A cross-sectional schematic diagram of a motor;

[0049] Figure 3 yes Figure 2 An enlarged schematic diagram of the motor at position A;

[0050] Figure 4 yes Figure 1 A three-dimensional exploded schematic diagram of a motor;

[0051] Figure 5 yes Figure 1 A three-dimensional exploded schematic diagram of a motor;

[0052] Figure 6 is a three-dimensional schematic diagram of an electric toothbrush according to certain embodiments of the present application;

[0053] Figure 7 yes Figure 6 A cross-sectional schematic diagram of a partial structure of an electric toothbrush;

[0054] Figure 8 yes Figure 6 A three-dimensional exploded schematic diagram of a partial structure of an electric toothbrush;

[0055] Fig. 9 yes Figure 6 3D exploded diagram of an electric toothbrush.

[0056] Description of main component symbols:

[0057] 1000, electric toothbrush; 100, motor; 101, first end of motor; 103, second end of motor; 10, motor body; 11, motor housing; 113, barrel; 1131, first end of barrel; 1133, second end of barrel; 115, first end cover; 117, second end cover; 13, motor shaft; 15, gasket; 30, position detection device; 31, fixing assembly; 311, positioning shell; 3111, first end of positioning shell; 3113, second end of positioning shell; 3115, first connecting hole; 3117, limiting surface; 3119, first positioning member; 313, circuit board component; 3131, second connecting hole; 3135, second positioning member; 3137, flexible circuit board; 3 139, reinforcing plate; 33, first sensing member; 35, second sensing member; 300, bracket assembly; 301, bracket body; 3011, first positioning groove; 3013, first guide rail; 303, cover body; 3031, second positioning groove; 3033, third fastener; 305, accommodating cavity; 307, first alignment member; 308, second alignment member; 309, fourth fastener; 500, limiting assembly; 501, limiting assembly; 5011, first limiting member; 5013, second limiting member; 503, restraining assembly; 5031, first restraining member; 5033, second restraining member; 600, brush head; 700, mounting plate; 800, handle shell; 801, first guide groove; 900, shock absorbing member. DETAILED DESCRIPTION

[0058] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0059] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or position relationship.

[0060] The orientations or positional relationships shown in the drawings are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, they should not be understood as limitations on the present application.

[0061] 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.

[0062] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0063] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0064] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0065] At present, the application of electric toothbrushes has become more and more widespread. Electric toothbrushes make the brush head vibrate at high frequency through the rapid rotation or vibration of the motor core, which instantly breaks down the toothpaste into fine foam and extends into the teeth to clean. At the same time, the vibration of the bristles can promote blood circulation in the oral cavity and have a massage effect on the gum tissue. The current motor can drive the motor shaft to rotate, and the motor shaft housing drives the brush head to rotate, so that the brush head has a better cleaning effect on the oral cavity. The motor is usually provided with a detection device to detect the rotation angle of the motor shaft, so as to control the rotation angle of the brush head. However, due to reasons such as the high-frequency vibration of the motor, the position of the detection device is easily offset, and the detection result of the detection device is prone to deviation, resulting in poor control effect on the rotation angle of the brush head. In order to solve this problem, the embodiment of the present application provides a motor 100( Figure 1 ) and electric toothbrush 1000 ( Figure 6 shown).

[0066] See also Figures 1 to 3The motor 100 of the embodiment of the present application includes a motor body 10 and a position detection device 30. The motor body 10 includes a motor housing 11 and a motor shaft 13. The motor shaft 13 is mounted on the motor housing 11 and can rotate around the axis of the motor shaft 13. The position detection device 30 includes a fixing component 31, a first induction component 33 and a second induction component 35. The fixing component 31 is connected to one end of the motor housing 11. The first induction component 33 is mounted on the motor shaft 13. The second induction component 35 is mounted on the fixing component 31 and is spaced apart from the first induction component 33. The fixing component 31 is rigidly positioned with the motor housing 11, the first induction component 33 is rigidly positioned with the motor shaft 13, the second induction component 35 is rigidly positioned with the fixing component 31, and the first induction component 33 and the second induction component 35 cooperate to detect the moving position of the motor shaft 13.

[0067] Please combine Figure 6 Specifically, the motor 100 of the present application is applied to an electric toothbrush 1000, and the motor 100 is used to drive the brush head 600 of the electric toothbrush 1000 to vibrate, so that the electric toothbrush 1000 can clean the oral cavity. The motor body 10 is a structure for driving the brush head 600 to vibrate, and the position detection device 30 is a structure for detecting the moving position of the motor shaft 13. The motor body 10 includes but is not limited to a linear motor 100, a rotary motor 100, and a bidirectional motor 100.

[0068] See also Figure 1 and Figure 2 The motor body 10 further includes a stator and a mover, both of which are installed in the motor housing 11. The mover is connected to the motor shaft 13, and the mover can drive the motor shaft 13 to move and / or rotate. The motor shaft 13 is installed in the motor housing 11 and at least partially extends from the motor housing 11. One end of the motor shaft 13 extending from the motor housing 11 is used to install the brush head 600 of the electric toothbrush 1000. The motor shaft 13 can drive the brush head 600 to move and / or rotate, thereby achieving high-frequency vibration of the brush head 600.

[0069] Among them, when the motor body 10 is a linear motor 100, the position detection device 30 can detect the telescopic position of the motor shaft 13, and control the telescopic distance of the brush head 600 of the electric toothbrush 1000 according to the telescopic position of the motor shaft 13; when the motor 100 is a rotary motor 100, the position detection device 30 can detect the rotation angle of the motor shaft 13, and control the rotation angle of the brush head 600 according to the rotation angle of the motor shaft 13; when the motor body 10 is a bidirectional motor 100, the position detection device 30 can detect the telescopic position of the motor shaft 13 and the rotation angle of the motor shaft 13, so as to effectively control the telescopic and rotation of the brush head 600. This application takes the motor body 10 as a rotary motor 100 as an example for explanation, and the position detection device 30 can detect the rotation angle of the motor shaft 13.

[0070] The motor housing 11 is used to install components such as the motor shaft 13, the stator and the mover, and the motor housing 11 can protect the components installed inside it. The material of the motor housing 11 includes but is not limited to metal materials or non-metal materials, wherein the metal materials include but are not limited to aluminum, iron, steel or aluminum alloy, and the non-metal materials include but are not limited to plastics. In one example, the motor housing 11 can be made of a metal material and a non-metal material, thereby making the structural strength of the motor housing 11 higher, preventing the motor housing 11 from being damaged during the operation of the motor 100, and improving the stability and reliability of the motor 100. In another example, the motor housing 11 can be made of a non-metal material, thereby making the weight of the motor housing 11 lighter, which is conducive to achieving the lightweight of the motor 100 and the electric toothbrush 1000.

[0071] See also Figures 1 to 3 , the fixing component 31 is detachably connected to the motor housing 11. The fixing component 31 is used to install the second sensing member 35 so that the second sensing member 35 can be fixed relative to the motor housing 11. In some embodiments, the motor housing 11 is rigidly connected to the fixing component 31. Among them, in the case of a rigid connection between the motor housing 11 and the fixing component 31, the stability of the connection between the fixing component 31 and the motor housing 11 is better. The fixing component 31 will not rotate and / or move relative to the motor housing 11, thereby improving the detection accuracy of the position detection device 30. In some embodiments, the second sensing member 35 is rigidly connected to the fixing component 31. Among them, in the case of a rigid connection between the second sensing member 35 and the fixing component 31, the stability of the connection between the second sensing member 35 and the fixing component 31 is better. The second sensing member 35 will not rotate and / or move relative to the fixing component 31, so that the induction between the second sensing member 35 and the first sensing member 33 is more accurate.

[0072] The first sensing member 33 is mounted on the motor shaft 13. The first sensing member 33 is rigidly connected to the motor shaft 13 and can move (move and / or rotate) together with the motor shaft 13. In the case where the first sensing member 33 is rigidly connected to the motor shaft 13, the stability of the connection between the first sensing member 33 and the motor shaft 13 is good. The first sensing member 33 will not rotate and / or move relative to the motor shaft 13, and the first sensing member 33 can remain relatively fixed with the motor shaft 13. In the case where the first sensing member 33 moves with the motor shaft 13, the second sensing member 35 can sense the position of the first sensing member 33, so that the moving position of the motor shaft 13 can be known. In one embodiment, in the case where the first sensing member 33 follows the motor shaft 13 to extend and retract along the axis direction of the motor shaft 13, the second sensing member 35 can sense the position of the first sensing member 33, so that the telescopic distance of the motor shaft 13 can be known. In another embodiment, in the case where the first sensing member 33 follows the motor shaft 13 to rotate with the axis of the motor shaft 13 as the axis, the second sensing member 35 can sense the position of the first sensing member 33, so that the rotation angle of the motor shaft 13 can be known. The first sensing element 33 of the present application can detect the rotation angle of the motor shaft 13 by detecting the position of the second sensing element 35 , thereby adjusting the rotation angle of the brush head 600 .

[0073] In the case where the first sensing member 33 is rigidly connected to the motor shaft 13, the second sensing member 35 is rigidly connected to the fixing assembly 31, and the fixing assembly 31 is rigidly connected to the motor housing 11, the second sensing member 35 can accurately sense the moving position of the first sensing member 33, and the sensing between the first sensing member 33 and the second sensing member 35 is relatively accurate, so that the detection result of the moving position of the motor shaft 13 by the position detection device 30 is relatively accurate. Exemplarily, in the case where the first sensing member 33 follows the motor shaft 13 to extend and retract along the axial direction X of the motor shaft 13, if the distance of each extension and retraction of the motor shaft 13 is 3mm, since the second sensing member 35 can accurately sense the moving position of the first sensing member 33, that is, the detection result of the extension and retraction distance of the motor shaft 13 by the position detection device 30 is 3mm each time, and the detection result will hardly deviate (for example, the detection result of the position detection device 30 will hardly occur: the first detection result is 2.95mm, the second detection result is 3.01mm, and the third detection result is 3mm). When the first sensing element 33 rotates along with the motor shaft 13 with the axis of the motor shaft 13 as the axis, if the motor shaft 13 rotates by 5° each time, the second sensing element 35 can accurately sense the movement position of the first sensing element 33, that is, the position detection device 30 detects the rotation angle of the motor shaft 13 by 5° each time, and the detection result will hardly deviate (for example, the position detection device 30 will hardly produce the situation where the first detection result is 4.96°, the second detection result is 5.03°, and the third detection result is 5°).

[0074] One of the first sensing element 33 and the second sensing element 35 may be an electromagnetic sensor (such as a Hall sensor), a photoelectric sensor (such as a laser sensor), or an ultrasonic sensor, and the other of the first sensing element 33 and the second sensing element 35 may be a component that can cooperate with an electromagnetic sensor (such as a Hall sensor), a photoelectric sensor (such as a laser sensor), or an ultrasonic sensor, so that the first sensing element 33 and the second sensing element 35 can cooperate to jointly detect the moving position of the motor shaft 13. For example, when the second sensing element 35 is a Hall sensor, the first sensing element 33 may be a magnetic element, and the Hall sensor can cooperate with the magnetic element to jointly detect the moving position of the motor shaft 13, that is, the Hall sensor can detect the moving position of the motor shaft 13 according to the magnetic field of the magnetic element. Since the magnetic element has at least two different magnetic poles, at this time, the number of the second sensing elements 35 (Hall sensors) is two, and the two second sensing elements 35 are arranged at intervals on the fixing component 31, and the two second sensing elements 35 (Hall sensors) are respectively used to sense the two magnetic poles of the first sensing element 33 (magnetic element).

[0075] In the motor 100 of the embodiment of the present application, the fixing component 31 is rigidly positioned with the motor housing 11, the first sensing member 33 is rigidly positioned with the second sensing member 35, and the second sensing member 35 is rigidly positioned with the fixing component 31. When the motor shaft 13 moves, the second sensing member 35 can accurately sense the moving position of the first sensing member 33, and the sensing between the first sensing member 33 and the second sensing member 35 is relatively accurate, so that the position detection device 30 has a relatively accurate detection result of the moving position of the motor shaft 13, which can improve the control effect of the brush head 600 during the rotation process.

[0076] The motor 100 is further described below with reference to the accompanying drawings.

[0077] In some embodiments, the motor 100 further includes a first fastener, which is used to lock the motor housing 11 and the fixing assembly 31. Among them, the provision of the first fastener can enhance the connection strength between the fixing assembly 31 and the motor housing 11, and enhance the stability of the connection between the fixing assembly 31 and the motor housing 11. It should be noted that, in some embodiments, the first fastener may be a bolt or a screw, etc. The number of the first fasteners may be one or more. When the number of the first fasteners is one, the connection between the fixing assembly 31 and the motor housing 11 is relatively simple, and the processing is relatively simple. When the number of the first fasteners is multiple, the stability of the connection between the fixing assembly 31 and the motor housing 11 can be further enhanced, and the fixing assembly 31 will not rotate and / or move relative to the motor housing 11.

[0078] See also Figure 1 and Figure 2 In one embodiment, the first fastener locks the motor housing 11 and the fixing assembly 31 along the radial direction of the motor shaft 13, so that the connection stability between the motor housing 11 and the fixing assembly 31 is better. In another embodiment, the first fastener locks the motor housing 11 and the fixing assembly 31 along the axial direction of the motor shaft 13, so that the connection stability between the motor housing 11 and the fixing assembly 31 is better. In still another embodiment, the first fastener locks the motor housing 11 and the fixing assembly 31 along the radial direction of the motor shaft 13, and the first fastener locks the motor housing 11 and the fixing assembly 31 along the axial direction of the motor shaft 13. At this time, the number of first fasteners can be multiple, some of the multiple first fasteners lock the motor housing 11 and the fixing component 31 along the radial direction of the motor shaft 13, and another part of the multiple first fasteners lock the motor housing 11 and the fixing component 31 along the axial direction of the motor shaft 13, so that the connection stability between the motor housing 11 and the fixing component 31 is better, the position sensing between the first sensing member 33 and the second sensing member 35 is more accurate, and the reliability of the position detection device 30 in detecting the moving position of the motor shaft 13 is higher.

[0079] See also Figure 1 and Figure 2 , further, in one embodiment, adhesive is provided between the first fastener and the motor housing 11. The provision of adhesive can further enhance the connection strength between the first fastener and the motor housing 11, prevent the first fastener and the motor housing 11 from loosening or falling off during the operation of the motor 100, thereby enhancing the stability of the connection between the fixing component 31 and the motor housing 11. In another embodiment, adhesive is provided between the first fastener and the fixing component 31. The provision of adhesive can enhance the connection strength between the first fastener and the fixing component 31, prevent the first fastener and the fixing component 31 from loosening or falling off during the operation of the motor 100, thereby enhancing the stability of the connection between the fixing component 31 and the motor housing 11. In yet another embodiment, adhesive is provided between the first fastener and the motor housing 11, and adhesive is provided between the first fastener and the fixing component 31. At this time, the setting of the adhesive can improve the connection strength between the first fastener and the fixing component 31, and the setting of the adhesive can also improve the connection strength between the first fastener and the motor housing 11, which can avoid loosening or falling off between the first fastener and the fixing component 31 during the operation of the motor 100, and can also avoid loosening or falling off between the first fastener and the motor housing 11 during the operation of the motor 100, thereby further improving the stability of the connection between the fixing component 31 and the motor housing 11, and the position sensing between the first sensing component 33 and the second sensing component 35 is more accurate.

[0080] See also Figures 1 to 4 In some embodiments, the motor housing 11 includes a barrel 113 and a first end cover 115, the barrel 113 includes a first end 1131 and a second end 1133 opposite to each other, the first end 1131 of the barrel 113 is fixedly connected to the fixing assembly 31, the first end cover 115 is installed on the first end 1131 of the barrel 113 and at least partially extends into the fixing assembly 31, and the first induction member 33 is sleeved on the motor shaft 13.

[0081] The barrel 113 and the first end cap 115 are detachably connected, and the connection between the barrel 113 and the first end cap 115 can be, but is not limited to, a snap connection, a threaded connection, or a screw connection. The first end 1131 of the barrel 113 is farther away from the brush head 600 of the electric toothbrush 1000 than the second end 1133 of the barrel 113. The barrel 113 and the first end cap 115 together form a cavity, and the cavity is used for installing the stator, the mover, the motor shaft 13 and other components of the motor 100 body therein. The first end 1131 of the barrel 113 can be connected to the fixing assembly 31 by a first fastener.

[0082] The motor shaft 13 extends from both the first end 1131 of the barrel 113 and the second end 1133 of the barrel 113. The end of the motor shaft 13 extending from the second end 1133 of the barrel 113 is used to mount the brush head 600 of the electric toothbrush 1000. The end of the motor shaft 13 extending from the first end 1131 of the barrel 113 at least partially extends into the fixing assembly 31, and the first sensing member 33 is sleeved on the end of the motor shaft 13 extending into the fixing assembly 31, so that the first sensing member 33 can cooperate with the second sensing member 35 to detect the rotation angle of the motor shaft 13.

[0083] See also Figure 2 and Figure 3 In one embodiment, the first sensing member 33 abuts against the first end cover 115. The first sensing member 33 directly abuts against the first end cover 115 so as to be installed on the motor shaft 13 by being positioned in cooperation with the first end cover 115. Therefore, compared with the electric toothbrush 1000 in the related art, the first sensing member 33 abuts against the first end cover 115 to achieve installation on the motor shaft 13, thereby preventing the accumulation of errors due to multiple positioning between the structural members, thereby reducing the positioning error of the first sensing member 33 in the axial direction of the motor shaft 13, and ensuring the accuracy of the position sensing between the first sensing member 33 and the second sensing member 35, thereby improving the detection reliability of the position detection device 30 for the moving position of the motor shaft 13.

[0084] See also Figure 2 and Figure 3 In another embodiment, the motor body 10 further includes a gasket 15 , which is sleeved on the motor shaft 13 and located between the first induction member 33 and the first end cover 115 , and the first induction member 33 abuts against the first end cover 115 through the gasket 15 .

[0085] Specifically, when the fixing assembly 31 is connected to the first end 1131 of the barrel 113, the first sensing member 33 can abut against the first end cover 115 through the gasket 15. The first sensing member 33 and the first end cover 115 are positioned in cooperation to achieve installation on the motor shaft 13, preventing the accumulation of errors due to multiple positioning between the structural parts, thereby reducing the positioning error of the first sensing member 33 in the axial direction of the motor shaft 13, and ensuring the stability of the relative position of the first sensing member 33 and the second sensing member 35, thereby improving the reliability of the position detection device 30 for the motion position detection of the motor shaft 13. In addition, the provision of the gasket 15 can also reduce the friction between the first sensing member 33 and the end cover when the first sensing member 33 moves relative to the motor housing 11 together with the motor shaft 13, thereby reducing the possibility of friction damage to the first sensing member 33 or the end cover, and extending the service life of the first sensing member 33.

[0086] Since the stator in the motor 100 body includes a coil and the mover includes a magnet, if the first induction component 33 is a magnetic component, the magnetic field of the magnet or the magnetic field generated when the coil is energized may affect the magnetism of the first induction component 33, thereby affecting the accuracy of the induction between the second induction component 35 and the first induction component 33, and affecting the accuracy of the position detection device 30 in detecting the moving position of the motor shaft 13.

[0087] See also Figures 2 to 4 In some embodiments, the first induction member 33 is a magnetic member, and the gasket 15 is made of a magnetic isolation material. Thus, the gasket 15 can block the magnetic field, thereby preventing the magnetic field of the magnet in the motor 100 or the magnetic field generated when the coil is energized from affecting the magnetism of the first induction member 33, thereby ensuring the accuracy of the first induction member 33 and the second induction member 35 in detecting the motion position of the motor shaft 13.

[0088] In other embodiments, the first induction member 33 is a magnetic member, and at least the portion of the motor shaft 13 used to mount the first induction member 33 is made of magnetic isolation material, thereby preventing the magnetic field of the magnet in the motor 100 or the magnetic field generated when the coil is energized from being transmitted along the motor shaft 13 to the first induction member 33, causing the magnetism of the first induction member 33 to be affected, thereby improving the accuracy of induction between the first induction member 33 and the second induction member 35.

[0089] In some other embodiments, the first induction member 33 is a magnetic member, the gasket 15 is made of a magnetic isolation material, and at least the portion of the motor shaft 13 used to mount the first induction member 33 is made of a magnetic isolation material. In this case, the magnetic field of the magnet in the motor 100 or the magnetic field generated when the coil is energized can be further prevented from being transmitted along the motor shaft 13 to the first induction member 33, thereby improving the accuracy of the position detection device 30 in detecting the motion position of the motor shaft 13.

[0090] In some embodiments, the magnetic isolation material includes at least one of copper or aluminum, that is, the gasket 15 is made of aluminum or copper. It is understandable that in other embodiments, the gasket 15 can also be made of plastic or rubber. Among them, plastic includes but is not limited to polytetrafluoroethylene (PTFE), nylon or polyurethane, etc.; rubber includes but is not limited to natural rubber, nitrile rubber or chloroprene rubber, etc.

[0091] See also Figure 2 and Figure 4In some embodiments, the motor housing 11 further includes a second end cover 117, which is disposed at the second end 1133 of the barrel 113 and is integrally formed with the barrel 113. The barrel 113, the first end cover 115, and the second end cover 117 together form a closed cavity, so that the motor housing 11 can provide better protection for the stator, mover and other components inside the cavity, and can also prevent the magnetic field in the cavity from affecting the components outside the cavity. When the second end cover 117 is integrally formed with the barrel 113, the processing of the motor housing 11 is relatively simple. The stator, mover and other components are installed on the barrel 113 from the first end 1131 of the barrel 113, and then the first end cover 115 is connected to the barrel 113.

[0092] See also Figure 2 and Figure 3 In some embodiments, the first sensing member 33 is directly or indirectly tightly fitted with the motor shaft 13, that is, the fitting clearance between the first sensing member 33 and the motor shaft 13 is small or even no clearance is present, thereby improving the stability of the connection between the first sensing member 33 and the motor shaft 13 and preventing the first sensing member 33 from loosening or falling off from the motor shaft 13 during the operation of the motor 100. Therefore, on the one hand, accurate sensing between the first sensing member 33 and the second sensing member 35 can be ensured, thereby improving the accuracy of the position detection device 30 in detecting the motion position of the motor shaft 13; on the other hand, the first sensing member 33 can be prevented from falling off from the motor shaft 13 and affecting the operation of the motor 100, thereby ensuring the stability and reliability of the operation of the motor 100.

[0093] In other embodiments, the first sensing member 33 is directly or indirectly glued to the motor shaft 13, thereby improving the stability of the connection between the first sensing member 33 and the motor shaft 13, and preventing the first sensing member 33 from loosening or falling off from the motor shaft 13 during the operation of the motor 100. On the one hand, this ensures that the first sensing member 33 and the second sensing member 35 can accurately sense each other, and improves the accuracy of the position detection device 30 detecting the motion position of the motor shaft 13; on the other hand, it prevents the first sensing member 33 from falling off from the motor shaft 13 and affecting the normal operation of the motor 100, and ensures the stability and reliability of the motor 100. It should be noted that in some embodiments, the adhesive used when gluing the first sensing member 33 to the motor shaft 13 can be chloroprene adhesive, polyurethane adhesive or 502 adhesive, etc., which is not limited here.

[0094] In some other embodiments, the first sensing member 33 is directly or indirectly tightly fitted with the motor shaft 13, and directly or indirectly glued, thereby further improving the stability of the connection between the first sensing member 33 and the motor shaft 13, ensuring that the first sensing member 33 and the second sensing member 35 can accurately sense each other, and improving the accuracy of the position detection device 30 in detecting the motion position of the motor shaft 13.

[0095] See also Figure 2 and Figure 3 In some embodiments, the portion of the motor shaft 13 for mounting the first induction member 33 is a non-cylindrical body, and the first induction member 33 is formed with a non-circular hole. Exemplarily, the cross-sectional shape of the portion of the motor shaft 13 for mounting the first induction member 33 may be, but is not limited to, a triangle, a quadrilateral, a pentagon, a hexagon or other polygonal structures. The opening shape of the first induction member 33 is the same as the cross-sectional shape of the portion of the motor shaft 13 for mounting the first induction member 33. At this time, when the first induction member 33 is sleeved on the motor shaft 13, the first induction member 33 can be restricted from rotating relative to the motor shaft 13 with the axis of the motor shaft 13 as the axis, that is, when the first induction member 33 is sleeved on the motor shaft 13, the first induction member 33 cannot rotate relative to the motor shaft 13. As a result, the connection stability between the first induction member 33 and the motor shaft 13 can be further improved, thereby ensuring the accuracy of the induction between the first induction member 33 and the second induction member 35, and improving the accuracy of the position detection device 30 detecting the motion position of the motor shaft 13.

[0096] See also Figures 2 to 5 In some embodiments, the fixing assembly 31 includes a positioning shell 311 and a circuit board component 313, the second sensing element 35 is fixedly installed on the circuit board component 313, the positioning shell 311 includes a first end 3111 and a second end 3113 relative to each other, the first end 3111 of the positioning shell 311 is fixedly connected to the motor housing 11, the second end 3113 of the positioning shell 311 is provided with a first connecting hole 3115, the circuit board component 313 is provided with a second connecting hole 3131, the second fastener passes through the second connecting hole 3131 and is locked to the first connecting hole 3115 to fix the circuit board component 313 to the second end 3113 of the positioning shell 311.

[0097] Specifically, the positioning shell 311 is a structure for installing the circuit board component 313 and other elements of the fixing assembly 31. The first end 3111 of the positioning shell 311 can be connected to the motor housing 11 through the first fastener, and the connection stability between the positioning shell 311 and the motor housing 11 is good. The circuit board component 313 is electrically connected to the motor 100 body to supply power to the motor 100 body. When the circuit board component 313 is installed in the positioning shell 311, the first connection hole 3115 corresponds to the second connection hole 3131. The second fastener penetrates the second connection hole 3131 and the first connection hole 3115 to lock the circuit board component 313 and the positioning shell 311. The provision of the second fastener can improve the connection strength between the circuit board component 313 and the positioning shell 311, improve the stability of the connection between the circuit board component 313 and the positioning shell 311, and prevent the circuit board component 313 from moving and / or rotating relative to the positioning shell 311. It should be noted that in some embodiments, the second fastener can be a bolt or a screw, etc. The number of the second fasteners can be one or more. In the case where the number of the second fasteners is one, the number of the first connection hole 3115 is one, and the number of the second connection hole 3131 is also one. The connection between the circuit board component 313 and the positioning shell 311 is relatively simple, and the structure of the positioning shell 311 and the circuit board component 313 is relatively simple, and the processing is relatively simple. In the case where the number of the second fasteners is multiple, the number of the first connection holes 3115 is multiple, and the number of the second connection holes 3131 is also multiple. The number of the first connection holes 3115, the number of the second connection holes 3131 and the number of the second fasteners are the same. At this time, the stability of the connection between the circuit board component 313 and the positioning shell 311 can be further improved.

[0098] The second sensing member 35 is fixedly mounted on the circuit board component 313, and the connection stability between the second sensing member 35 and the circuit board component 313 is good, and the second sensing member 35 will not rotate and / or move relative to the circuit board component 313. The circuit board component 313 is fixedly mounted on the positioning shell 311, and the connection stability between the circuit board component 313 and the positioning shell 311 is good, and the circuit board component 313 will not rotate and / or move relative to the positioning shell 311. As a result, the second sensing member 35 can remain relatively fixed with the positioning shell 311, and the second sensing member 35 will not rotate and / or move relative to the positioning shell 311, so that the second sensing member 35 will not rotate and / or move relative to the motor housing 11. The second sensing member 35 can accurately sense the moving position of the first sensing member 33, and the position detection device 30 has a high accuracy in detecting the moving position of the motor shaft 13.

[0099] See also Figures 2 to 5In one embodiment, adhesive is provided between the second fastener and the first connection hole 3115. The provision of adhesive can further enhance the connection strength between the second fastener and the positioning shell 311, prevent the second fastener and the positioning shell 311 from loosening or falling off during the operation of the motor 100, thereby enhancing the stability of the connection between the positioning shell 311 and the circuit board component 313, and the second induction member 35 and the positioning shell 311 can remain relatively fixed. In another embodiment, adhesive is provided between the second fastener and the second connection hole 3131. The provision of adhesive can further enhance the connection strength between the second fastener and the circuit board component 313, prevent the second fastener and the circuit board component 313 from loosening or falling off during the operation of the motor 100, thereby enhancing the stability of the connection between the positioning shell 311 and the circuit board component 313, and the second induction member 35 and the positioning shell 311 can remain relatively fixed. In another embodiment, adhesive is provided between the second fastener and the first connection hole 3115, and adhesive is provided between the second fastener and the second connection hole 3131. The setting of the adhesive can improve the connection strength between the second fastener and the positioning shell 311, and the setting of the adhesive can also improve the connection strength between the second fastener and the circuit board component 313, which can avoid loosening or falling off between the second fastener and the positioning shell 311 during the operation of the motor 100, and can also avoid loosening or falling off between the second fastener and the circuit board component 313 during the operation of the motor 100, thereby further improving the stability of the connection between the positioning shell 311 and the circuit board component 313, and the second sensing element 35 and the positioning shell 311 can remain relatively fixed, and the second sensing element 35 can accurately sense the movement position of the first sensing element 33.

[0100] See also Figures 3 to 5Furthermore, in some embodiments, the second end 3113 of the positioning shell 311 is further provided with a limiting surface 3117 that is recessed relative to the outer end surface of the positioning shell 311 toward the motor body 10, and the circuit board component 313 is carried on the limiting surface 3117, and the outer surface of the circuit board component 313 does not exceed the outer end surface. Among them, the limiting surface 3117 can further position the circuit board component 313, thereby reducing the installation error between the circuit board component 313 and the positioning shell 311. Therefore, on the first aspect, the installation error between the second sensing member 35 and the positioning shell 311 is small, so that the second sensing member 35 can accurately sense the movement position of the first sensing member 33. Secondly, when the circuit board component 313 is supported on the limiting surface 3117, the peripheral wall of the second end 3113 of the positioning shell 311 can limit the circuit board component 313, thereby preventing the circuit board component 313 from moving relative to the positioning shell 311 along the axial direction X perpendicular to the motor shaft 13, thereby further improving the connection stability between the circuit board component 313 and the positioning shell 311, and the induction between the second sensing element 35 and the first sensing element 33 is more accurate, and the position detection device 30 has a higher detection accuracy for the moving position of the motor shaft 13.

[0101] See also Figure 4 and Figure 5 Furthermore, in some embodiments, the second end 3113 of the positioning shell 311 is provided with a first positioning member 3119, and the circuit board component 313 is provided with a second positioning member 3135, and the first positioning member 3119 cooperates with the second positioning member 3135 to position the circuit board component 313.

[0102] When the circuit board component 313 is installed on the positioning shell 311, the position of the first positioning member 3119 corresponds to the position of the second positioning member 3135, and the first positioning member 3119 cooperates with the second positioning member 3135 to connect the circuit board component 313 to the positioning shell 311 stably. When the first positioning member 3119 cooperates with the second positioning member 3135, the first positioning member 3119 and the second positioning member 3135 can further position the circuit board component 313, thereby reducing the installation error between the circuit board component 313 and the positioning shell 311. As a result, the installation error between the second sensing member 35 and the positioning shell 311 is small, so that the induction between the second sensing member 35 and the first sensing member 33 is more accurate. And when the first positioning member 3119 cooperates with the second positioning member 3135, the connection stability between the circuit board component 313 and the positioning shell 311 can be further improved, so that the induction between the second sensing member 35 and the first sensing member 33 is more accurate, and the position detection device 30 has a higher detection accuracy for the moving position of the motor shaft 13.

[0103] In one embodiment, the first positioning member 3119 is a positioning hole, and the second positioning member 3135 is a positioning column. When the circuit board component 313 is installed in the positioning shell 311, the positioning hole cooperates with the positioning column to position the circuit board component 313. In another embodiment, the first positioning member 3119 is a positioning column, and the second positioning member 3135 is a positioning hole. When the circuit board component 313 is installed in the positioning shell 311, the positioning hole cooperates with the positioning column to position the circuit board component 313. The first positioning member 3119 of the embodiment of the present application is a positioning hole, and the second positioning member 3135 is a positioning column.

[0104] See also Figures 2 to 5 In some embodiments, the circuit board component 313 is a hard circuit board, and the second sensing member 35 is disposed on the side of the hard circuit board facing the first sensing member 33. The hard circuit board is fixedly connected to the positioning shell 311, and the second sensing member 35 is fixedly connected to the hard circuit board, thereby realizing a rigid connection between the second sensing member 35 and the fixed component 31. The second sensing member 35 can be relatively fixed to the fixed component 31, so that the induction between the first sensing member 33 and the second sensing member 35 is more accurate, and the position detection device 30 has a higher detection accuracy for the moving position of the motor shaft 13.

[0105] In other embodiments, the circuit board component 313 is a hard-soft circuit board, and includes a hard board portion and a soft board portion, and the second sensing element 35 is disposed on the side of the hard board portion facing the first sensing element 33. When the second sensing element 35 is fixedly connected to the hard board portion, the circuit board component 313 is not easily deformed, and the connection between the second sensing element 35 and the circuit board component 313 is stable.

[0106] In some other embodiments, the circuit board component 313 includes a flexible circuit board 3137 and a reinforcing plate 3139, the reinforcing plate 3139 is combined with the flexible circuit board 3137, and is installed together at the second end 3113 of the positioning shell 311, the flexible circuit board 3137 is located on the side of the reinforcing plate 3139 facing the motor shell 11, and the second sensing member 35 is arranged on the side of the flexible circuit board 3137 facing the first sensing member 33. In the case where the second sensing member 35 is fixedly connected to the flexible circuit board 3137, the flexible circuit board 3137 is easy to deform. Therefore, the reinforcing plate 3139 is arranged at the position where the flexible circuit board 3137 is connected to the second sensing member 35. The reinforcing plate 3139 can improve the stability of the connection between the flexible circuit board 3137 and the second sensing member 35, so that the induction between the first sensing member 33 and the second sensing member 35 is more accurate, and the position detection device 30 has a higher detection accuracy for the moving position of the motor shaft 13.

[0107] See also Figures 2 to 5In some embodiments, the positioning shell 311 and / or the motor shell 11 are made of metal materials. The metal materials include, but are not limited to, iron, stainless steel, aluminum, copper, etc. When the positioning shell 311 and / or the motor shell 11 are made of metal materials, the structural strength of the positioning shell 311 and / or the motor shell 11 can be improved, the possibility of damage to the positioning shell 311 or the motor shell 11 can be reduced, the service life of the positioning shell 311 and the motor shell 11 can be extended, and the normal operation of the motor 100 can be ensured.

[0108] See also Figure 2 In some embodiments, the motor body 10 further includes a bearing. The bearing of the present application includes two bearings, which are respectively mounted on the first end cover 115 and the second end cover 117. The bearing includes a bearing outer ring and a bearing inner ring. The bearing outer ring of one bearing is fixedly connected to the first end cover 115, and the bearing outer ring of the other bearing is fixedly connected to the second end cover 117. The bearing inner ring is sleeved and mounted on the motor shaft 13, and the bearing inner ring can rotate relative to the bearing outer ring together with the motor shaft 13. Among them, the setting of the bearing can reduce the friction between the motor shaft 13 and the motor housing 11, and avoid the motor shaft 13 directly contacting the motor housing 11, resulting in excessive friction between the motor shaft 13 and the motor housing 11, thereby reducing the energy loss generated during the operation of the motor 100 and ensuring the operation efficiency of the motor 100. It should be noted that in some embodiments, the bearing includes but is not limited to rolling bearings, sliding bearings, spherical bearings and oil-containing bearings.

[0109] See also Figure 6 and Figure 7 The electric toothbrush 1000 of the embodiment of the present application includes a bracket assembly 300 and the motor 100 of the above embodiment, and the motor 100 is installed in the bracket assembly 300. The bracket assembly 300 is a structure that can install the motor 100 and connect other components of the electric toothbrush 1000. The material of the bracket assembly 300 includes but is not limited to metal, plastic or rubber.

[0110] In the electric toothbrush 1000 of the embodiment of the present application, the fixing assembly 31 is rigidly positioned with the motor housing 11, the first sensing member 33 is rigidly positioned with the second sensing member 35, and the second sensing member 35 is rigidly positioned with the fixing assembly 31. When the motor shaft 13 moves, the second sensing member 35 can accurately sense the moving position of the first sensing member 33, and the sensing between the first sensing member 33 and the second sensing member 35 is relatively accurate, so that the position detection device 30 has a relatively accurate detection result of the moving position of the motor shaft 13, which can improve the control effect of the brush head 600 during the rotation process.

[0111] See also Figure 2 and Figure 7In some embodiments, the motor housing 11 and the bracket assembly 300 are rigidly positioned, and / or the position detection device 30 and the bracket assembly 300 are rigidly positioned. In one embodiment, the motor housing 11 and the bracket assembly 300 are rigidly positioned. At this time, the stability of the connection between the motor housing 11 and the bracket assembly 300 is better. The motor housing 11 will not rotate and / or move relative to the bracket assembly 300, so that the motor 100 body will not rotate and / or move relative to the bracket assembly 300, and the relative position between the first sensor 33 and the bracket assembly 300 is relatively stable. During the operation of the motor 100, the first sensor 33 will not shift relative to the bracket assembly 300, thereby ensuring that the induction between the first sensor 33 and the second sensor 35 is relatively accurate, and the position detection device 30 has a high accuracy in detecting the moving position of the motor shaft 13.

[0112] See also Figure 2 and Figure 7 In another embodiment, the position detection component is rigidly positioned with the bracket assembly 300. At this time, the connection between the position detection component and the bracket assembly 300 is relatively stable, and the position detection component will not rotate and / or move relative to the bracket assembly 300, so that the second sensing member 35 can remain relatively fixed with the bracket assembly 300. During the operation of the motor 100, the second sensing member 35 will not be offset relative to the bracket assembly 300, thereby ensuring that the induction between the first sensing member 33 and the second sensing member 35 is relatively accurate, and the position detection device 30 has a high accuracy in detecting the moving position of the motor shaft 13.

[0113] See also Figure 2 and Figure 7 In another embodiment, the motor housing 11 is rigidly positioned with the bracket assembly 300, and the position detection assembly is also rigidly positioned with the bracket assembly 300. At this time, the relative position between the first sensing member 33 and the bracket assembly 300 is relatively stable. During the operation of the motor 100, the first sensing member 33 will not shift relative to the bracket assembly 300. The second sensing member 35 can also remain relatively fixed with the bracket assembly 300. During the operation of the motor 100, the second sensing member 35 will not shift relative to the bracket assembly 300. Thus, it can be further ensured that the induction between the first sensing member 33 and the second sensing member 35 is more accurate, and the position detection device 30 has a higher detection accuracy for the moving position of the motor shaft 13.

[0114] See also Figure 2 , Figure 7 and Figure 8Specifically, in some embodiments, a non-motion fit is formed between the motor housing 11 and the bracket assembly 300, and / or a non-motion fit is formed between the position detection device 30 and the bracket assembly 300. In one embodiment, when the motor body 10 and the position detection device 30 are positioned and constrained by the same bracket assembly 300, a non-motion fit is formed between the motor housing 11 and the bracket assembly 300. In another embodiment, when the motor body 10 and the position detection device 30 are positioned and constrained by the same bracket assembly 300, a non-motion fit is formed between the position detection device 30 and the bracket assembly 300. In yet another embodiment, when the motor body 10 and the position detection device 30 are positioned and constrained by the same bracket assembly 300, a non-motion fit is formed between the motor housing 11 and the bracket assembly 300, and a non-motion fit is formed between the position detection device 30 and the bracket assembly 300.

[0115] Among them, a non-moving fit is formed between the motor housing 11 and the bracket assembly 300, that is, the motor housing 11 is fixed relative to the bracket assembly 300 in the direction of rotation with the axis of the motor shaft 13 as the axis; and / or, the motor housing 11 is fixed relative to the bracket assembly 300 in the axial direction of the motor shaft 13; accordingly, a non-moving fit is formed between the position detection device 30 and the bracket assembly 300, that is, the position detection device 30 is fixed relative to the bracket assembly 300 in the direction of rotation with the axis of the motor shaft 13 as the axis; and / or, the position detection device 30 is fixed relative to the bracket assembly 300 in the axial direction of the motor shaft 13. Fixed, thereby, a non-moving fit is formed between the motor housing 11 and the bracket assembly 300, and a non-moving fit is formed between the position detection device 30 and the bracket assembly 300, which can improve the stability of the installation of the motor 100 on the bracket assembly 300, prevent the relative position between the motor housing 11 and the position detection device 30 from changing during the operation of the motor 100, ensure the relative position stability of the motor body 10 and the position detection device 30, thereby improving the reliability of the position detection device 30 for detecting the motion position of the motor shaft 13, and ensure the effectiveness of the position detection device 30 for controlling the motion of the motor shaft 13.

[0116] The motor body 10 and the position detection device 30 are positioned and constrained by the same bracket assembly 300, that is, the motor body 10 and the position detection device 30 can be positioned and constrained by an integral bracket assembly 300. Therefore, compared with the two ends of the motor 100 being respectively matched with different structural members to achieve installation and positioning, there is a relative constraint between the motor body 10 and the position detection device 30 in this embodiment, so that the position stability between the motor body 10 and the position detection device 30 can be improved, thereby improving the accuracy of the position detection device 30 detecting the motion position of the motor shaft 13. It should be noted that in some embodiments, the bracket assembly 300 may include only one structural member, that is, the bracket assembly 300 is made by an integrated molding process, so that the motor body 10 and the position detection device 30 are positioned and constrained by the same bracket assembly 300; or, the bracket assembly 300 includes at least two structural members, and the two structural members can be connected together to form an integral structure, so that the motor body 10 and the position detection device 30 are positioned and constrained by the same bracket assembly 300.

[0117] The motor body 10 and the position detection device 30 of the present application are positioned and constrained by the same bracket assembly 300, so that a non-moving fit is formed between the motor housing 11 and the bracket assembly 300, and / or a non-moving fit is formed between the position detection device 30 and the bracket assembly 300. Therefore, compared with the electric toothbrush 1000 in the related art, there is a relative constraint between the motor body 10 and the position detection device 30, thereby preventing the relative position between the motor body 10 and the position detection device 30 from changing during the operation of the motor 100, that is, ensuring the relative position between the motor body 10 and the position detection device 30 is stable, thereby improving the reliability of the position detection device 30 detecting the motion position of the motor shaft 13.

[0118] In addition, in the related art, the two ends of the motor 100 are respectively matched with different structural parts to achieve installation and positioning. Therefore, during the assembly process of the motor 100, the two ends of the motor 100 need to be matched with different structural parts in turn. However, due to the influence of assembly errors, positioning errors are easily generated between the two ends of the motor 100 and the structural parts, and the positioning errors will cumulatively affect the installation and positioning of the motor 100. Therefore, when the motor 100 is running, the motor 100 is easily affected by vibration and produces shaking or displacement, affecting the normal operation of the electric toothbrush 1000. In the embodiment of the present application, the motor body 10 and the position detection device 30 are positioned and constrained by the same bracket assembly 300, thereby preventing the motor 100 from being positioned multiple times with the structural parts and generating large errors, thereby improving the stability of the motor 100 installed on the bracket assembly 300 and ensuring the normal operation of the electric toothbrush 1000.

[0119] See also Figure 2 , Figure 7 and Figure 8 In some embodiments, the electric toothbrush 1000 also includes a limit assembly 500, which is disposed between the motor 100 and the bracket assembly 300. The motor housing 11 is connected to the bracket assembly 300 through the limit assembly 500. The limit assembly 500 is used to limit the movement and / or rotation of the motor 100 relative to the bracket assembly 300.

[0120] Specifically, the motor 100 in the electric toothbrush 1000 is generally a cylindrical motor 100. During the operation of the motor 100, the cylindrical motor 100 is prone to rotate and / or move in the bracket assembly 300. The limit assembly 500 of the present application can limit the rotation and movement of the cylindrical motor 100 in the bracket assembly 300, and prevent the motor 100 from rotating or displacing in the bracket assembly 300 due to the vibration generated during the operation of the motor 100. The motor housing 11 can clamp the motor 100 so that the motor 100 can collide with the bracket assembly 300 on two opposite sides, and the combination between the motor 100 and the bracket assembly 300 is more stable.

[0121] See also Figure 2 , Figure 7 and Figure 8 In some embodiments, the limit assembly 500 includes a limit assembly 501 and a constraint assembly 503, the motor 100 includes a first end 101 and a second end 103 opposite to each other, the limit assembly 501 is located on the side where the second end 103 of the motor 100 is located, and the constraint assembly 503 is located on the side where the first end 101 of the motor 100 is located, and the motor 100 forms a non-rotating fit with the bracket assembly 300 through the limit assembly 501 and / or the constraint assembly 503.

[0122] The first end 101 of the motor 100 is further away from the brush head 600 of the electric toothbrush 1000 than the second end 103 of the motor 100. The limiting component 501 and the constraining component 503 are arranged at intervals in the axial direction of the motor shaft 13 to limit the position of the motor housing 11 relative to the bracket assembly 300. On the one hand, at least one of the limiting component 501 and / or the constraining component 503 can prevent the motor housing 11 from rotating relative to the bracket assembly 300, so as to avoid the motor shaft 13 of the brush head 600 driven by the motor 100 from rotating relative to the bracket assembly 300, causing the position of the brush head 600 to deflect, affecting the normal use of the electric toothbrush 1000 by the user. On the other hand, at least one of the limiting component 501 and / or the constraining component 503 can also prevent the motor housing 11 from moving in any direction relative to the bracket assembly 300, so as to prevent the motor housing 11 from shaking in the bracket assembly 300, so as to avoid affecting the detection accuracy of the position detection mechanism in the electric toothbrush 1000.

[0123] See also Figure 2 , Figure 7 and Figure 8 In some embodiments, the limiting component 501 includes a first limiting member 5011 and a second limiting member 5013, one of the first limiting member 5011 and the second limiting member 5013 is installed on the motor 100, and the other is arranged on the bracket assembly 300, and the first limiting member 5011 and the second limiting member 5013 cooperate to limit the relative rotation and / or relative movement between the motor housing 11 and the bracket assembly 300.

[0124] Wherein, when the positions of the first limiting member 5011 and the second limiting member 5013 correspond and cooperate with each other, the motor housing 11 can be installed in the bracket assembly 300. At this time, the relative position between the motor housing 11 and the bracket assembly 300 is fixed, and the first limiting member 5011 and the second limiting member 5013 can jointly limit the rotation of the motor housing 11 relative to the bracket assembly 300 and / or limit the movement of the motor housing 11 relative to the bracket assembly 300, and the assembly tolerance of the two is smaller. At this time, the rotation and / or movement of the motor 100 body relative to the bracket assembly 300 can be avoided, and the relative position between the first induction member 33 and the bracket assembly 300 is relatively stable, so that the induction between the first induction member 33 and the second induction member 35 is more accurate.

[0125] See also Figure 2 , Figure 7 and Figure 8 Specifically, in some embodiments, the first limiting member 5011 and the second limiting member 5013 are protrusions and depressions that can be engaged with each other. The first limiting member 5011 and the second limiting member 5013 can be combined with each other at one end of the motor housing 11, and the peripheral side surface of the motor housing 11 can directly contact the inner wall of the bracket assembly 300 to avoid a large gap between the peripheral shell of the motor housing 11 and the inner wall of the bracket assembly 300, thereby reducing or even avoiding the shaking of the motor 100 in the bracket assembly 300.

[0126] In some embodiments, the first limiting member 5011 is disposed on the first end cover 115, and the second limiting member 5013 is disposed in the bracket assembly 300 and corresponds to the first limiting member 5011. In the case where the first limiting member 5011 is disposed on the end surface of the first end cover 115, the first limiting member 5011 and the second limiting member 5013 can form abutment in the axial direction of the motor shaft 13 to prevent the motor housing 11 from shaking relative to the bracket assembly 300 in the axial direction of the motor shaft 13. In one example, the first limiting member 5011 is a protrusion disposed on the end surface of the first end cover 115, and the second limiting member 5013 is a depression disposed on the inner wall of the bracket assembly 300. In another example, the first limiting member 5011 is a depression disposed on the end surface of the first end cover 115, and the second limiting member 5013 is a protrusion disposed on the inner wall of the bracket assembly 300. In other embodiments, the first limiting member 5011 is disposed at the second end 1133 of the barrel 113, and the second limiting member 5013 is disposed in the bracket assembly 300 and corresponds to the first limiting member 5011. In the case where the first limiting member 5011 is disposed at the barrel 113, the combination of the first limiting member 5011 and the second limiting member 5013 can prevent the motor housing 11 from rotating relative to the bracket assembly 300 around the axis of the motor shaft 13, so that the combination between the motor 100 and the bracket assembly 300 is more stable. In one example, the first limiting member 5011 is a protrusion disposed on the second end 1133 of the barrel 113, and the second limiting member 5013 is a recess disposed on the inner wall of the bracket assembly 300. In another example, the first limiting member 5011 is a recess disposed on the second end 1133 of the barrel 113, and the second limiting member 5013 is a protrusion disposed on the inner wall of the bracket assembly 300.

[0127] See also Figure 2 , Figure 7 and Figure 8 In some embodiments, the first limiting member 5011 is disposed on the second end cover 117 and includes two, the second limiting member 5013 is disposed on the bracket assembly 300 and includes two, each second limiting member 5013 cooperates with one first limiting member 5011; the two first limiting members 5011 are arranged along the axis direction perpendicular to the motor shaft 13. In particular, when the two first limiting members 5011 are arranged along the axis direction perpendicular to the motor shaft 13, the two first limiting members 5011 can respectively conflict with the two second limiting members 5013. In the case that the motor housing 11 has a tendency to rotate relative to the bracket assembly 300, the first limiting member 5011 and the second limiting member 5013 will abut against each other and generate a torsional force in the opposite direction to the rotation tendency of the motor housing 11, so as to further prevent the motor housing 11 from rotating relative to the bracket assembly 300.

[0128] See also Figure 2 , Figure 7 and Figure 8In some embodiments, the constraint assembly 503 includes a first constraint member 5031 and a second constraint member 5033, one of the first constraint member 5031 and the second constraint member 5033 is arranged on the bracket assembly 300, and the other is arranged on the positioning shell 311 of the fixing assembly 31, and the first constraint member 5031 and the second constraint member 5033 cooperate to limit the relative rotation and / or relative movement between the positioning shell 311 and the bracket assembly 300.

[0129] Specifically, when the positions of the first restraining member 5031 and the second restraining member 5033 correspond and cooperate with each other, the first restraining member 5031 and the second restraining member 5033 can restrain the rotation of the positioning shell 311 relative to the bracket assembly 300 and / or restrain the movement of the positioning shell 311 relative to the bracket assembly 300. At this time, the positioning shell 311 and the motor shell 11 connected to the positioning shell 311 can be installed in the bracket assembly 300, and the relative position between at least part of the structure of the motor shell 11 and the bracket assembly 300 is fixed, and the assembly tolerance of the two is smaller. Since the connection between the positioning shell 311 and the bracket assembly 300 is relatively stable, the connection between the fixed assembly 31 and the bracket assembly 300 is relatively stable, and the relative position between the second induction member 35 installed in the fixed assembly 31 and the bracket assembly 300 is relatively stable, so that the induction between the first induction member 33 and the second induction member 35 is relatively accurate.

[0130] The first limiting member 5011 cooperates with the second limiting member 5013 to limit the relative rotation and / or relative movement between the motor body 10 and the bracket assembly 300. The first restraining member 5031 and the second restraining member 5033 cooperate to limit the relative rotation and / or relative movement between the fixing assembly 31 and the bracket assembly 300. Thus, the stability of the connection between the motor body 10 and the fixing assembly 31 can be further improved, so that the induction between the first sensing member 33 and the second sensing member 35 is more accurate, and the reliability of the position detection device 30 in detecting the moving position of the motor shaft 13 is higher.

[0131] See also Figure 2 , Figure 7 and Figure 8In some embodiments, the first restraint 5031 and the second restraint 5033 are protrusions and depressions that can be engaged with each other. In some embodiments, the first restraint 5031 is provided on the end surface of the positioning shell 311, and the second restraint 5033 is provided on the bracket assembly 300 and corresponds to the first restraint 5031. The first restraint 5031 and the second restraint 5033 can form abutment in the axial direction of the motor shaft 13 to prevent the motor housing 11 from shaking relative to the bracket assembly 300 in the axial direction of the motor shaft 13. In one example, the first restraint 5031 is a protrusion provided on the end surface of the positioning shell 311, and the second restraint 5033 is a depression provided on the inner wall of the bracket assembly 300. In another example, the first restraint 5031 is a depression provided on the end surface of the positioning shell 311, and the second restraint 5033 is a protrusion provided on the inner wall of the bracket assembly 300. In other embodiments, the first restraint 5031 is disposed on the peripheral side of the positioning shell 311, and the second restraint 5033 is disposed on the bracket assembly 300 and corresponds to the first restraint 5031. The combination of the first restraint 5031 and the second restraint 5033 can prevent the motor housing 11 from rotating relative to the bracket assembly 300 around the axis of the motor shaft 13, so that the combination between the motor 100 and the bracket assembly 300 is more stable. In one example, the first restraint 5031 is a protrusion disposed on the peripheral side wall of the positioning shell 311, and the second restraint 5033 is a depression disposed on the inner wall of the bracket assembly 300. In another example, the first restraint 5031 is a depression disposed on the peripheral side wall of the positioning shell 311, and the second restraint 5033 is a protrusion disposed on the inner wall of the bracket assembly 300.

[0132] See also Figure 2 , Figure 7 and Figure 8 In some embodiments, the bracket assembly 300 is formed with a bracket body 301 and a cover body 303 on the axial interface, the bracket body 301 and the cover body 303 together form a accommodating cavity 305, and the bracket body 301 and the cover body 303 clamp at least part of the structure of the motor 100; the motor housing 11 is connected to at least one of the bracket body 301 and the cover body 303 through a limiting assembly 500.

[0133] Specifically, the accommodating cavity 305 of the bracket assembly 300 can be used to accommodate at least part of the structure of the motor 100, for example, the accommodating cavity 305 can accommodate the motor housing 11 and other components disposed in the motor housing 11. The bracket body 301 and the cover body 303 can be either a separate structure or an integral structure, which is not limited here. The materials of the bracket body 301 and the cover body 303 can be the same or different. In some embodiments, the length of the bracket body 301 along the axial direction of the motor shaft 13 is greater than the length of the cover body 303, that is, the cover body 303 can be connected to part of the structure of the bracket body 301. The bracket body 301 can also be used to install or connect other structures in the electric toothbrush 1000, such as a battery. The bracket body 301 and the cover body 303 can jointly form a closed but unsealed accommodating cavity 305, and the accommodating cavity 305 can be used to accommodate at least part of the structure of the motor 100. When the support body 301 and the cover body 303 are combined with each other and installed to form a whole, the support body 301 and the cover body 303 can clamp at least part of the structure of the motor 100 (for example, the motor housing 11), so that the motor housing 11 is installed in the accommodating cavity 305 and contacts the inner wall of the support assembly 300, thereby reducing the shaking of the motor housing 11 in the support assembly 300. In some embodiments, the motor housing 11 is connected to the support body 301 or the cover body 303 through the stop assembly 500. In other embodiments, the motor housing 11 is connected to the support body 301 and the cover body 303 respectively through the stop assembly 500, so that the position of the motor 100 relative to the support assembly 300 is fixed.

[0134] See also Figure 2 and Figure 8 In some embodiments, at least one of the bracket body 301 and the cover body 303 is provided with a positioning groove, and the motor 100 is clamped in the positioning groove to limit the movement and / or rotation of the motor 100 relative to the bracket assembly 300.

[0135] Among them, the positioning groove can be used to accommodate at least part of the structure of the motor 100. When the motor 100 is stuck in the positioning groove, along the axial direction of the motor shaft 13, the two opposite ends of the partial structure of the motor 100 arranged in the positioning groove are in conflict with the bracket assembly 300, and at least part of the partial structure of the motor 100 arranged in the positioning groove along the axial direction perpendicular to the motor shaft 13 can also conflict with the bracket assembly 300. When the bracket body 301 and the cover body 303 are combined with each other, the positioning groove can participate in forming the accommodating cavity 305. In some embodiments, the positioning groove can be used to limit the movement of the motor 100 relative to the bracket assembly 300. Along the axial direction perpendicular to the motor shaft 13, the side wall of the positioning groove can prevent the motor 100 from shaking relative to the bracket assembly 300. In other embodiments, the positioning groove can also be used to limit the rotation of the motor 100 relative to the bracket assembly 300 along the axis of the motor shaft 13. Part of the structure of the positioning groove can cooperate with at least part of the structure of the motor 100. When the motor 100 drives the brush head 600 to vibrate, the part of the structure of the motor 100 arranged in the positioning groove will have a tendency to twist relative to the bracket assembly 300. The part of the structure in the positioning groove can squeeze and apply a reverse twisting force to at least part of the structure of the motor 100, thereby preventing the motor 100 from rotating relative to the bracket assembly 300.

[0136] See also Figure 2 and Figure 8 In some embodiments, the bracket body 301 is provided with a first positioning groove 3011, and the cover body 303 is provided with a second positioning groove 3031; when the bracket body 301 and the cover body 303 are matched, the opening of the first positioning groove 3011 and the opening of the second positioning groove 3031 are arranged opposite to each other and jointly form a receiving cavity 305, and the motor 100 is clamped in the receiving cavity 305 to limit the movement and / or rotation of the motor 100 relative to the bracket assembly 300.

[0137] In which, when the bracket body 301 and the cover body 303 are matched, the opening of the first positioning groove 3011 and the opening of the second positioning groove 3031 are arranged opposite to each other and jointly form a receiving cavity 305, and the motor 100 is clamped in the first positioning groove 3011 and the second positioning groove 3031 to limit the movement and / or rotation of the motor 100 relative to the bracket assembly 300. For example: the side wall of the first positioning groove 3011 and the side wall of the second positioning groove 3031 can limit the movement of the motor 100 in the direction perpendicular to the axis of the motor shaft 13. The side wall of the first positioning groove 3011 and the side wall of the second positioning groove 3031 can also limit the rotation of the motor 100 with the axis of the motor shaft 13 as the axis.

[0138] See also Figure 2 and Figure 8In some embodiments, the cover 303 is fixedly mounted on the bracket body 301 by a third fastener 3033. The third fastener 3033 is used to lock the cover 303 and the bracket body 301 in an axial direction perpendicular to the motor shaft 13. The provision of the third fastener 3033 can improve the connection strength between the cover 303 and the bracket body 301, and improve the stability of the connection between the cover 303 and the bracket body 301. The first fastener may be a bolt or a screw, etc. The third fastener 3033 may include a plurality of third fasteners. When the number of the third fasteners 3033 is a plurality, the stability of the connection between the cover 303 and the bracket body 301 can be further improved.

[0139] In one embodiment, adhesive is provided between the third fastener 3033 and the cover 303. The provision of adhesive can further enhance the connection strength between the third fastener 3033 and the cover 303, prevent the third fastener 3033 and the cover 303 from loosening or falling off during the operation of the motor 100, thereby enhancing the stability of the connection between the cover 303 and the bracket body 301. In another embodiment, adhesive is provided between the third fastener 3033 and the bracket body 301. The provision of adhesive can enhance the connection strength between the third fastener 3033 and the bracket body 301, prevent the third fastener 3033 and the bracket body 301 from loosening or falling off during the operation of the motor 100, thereby enhancing the stability of the connection between the cover 303 and the bracket body 301. In another embodiment, adhesive is provided between the third fastener 3033 and the cover 303, and adhesive is provided between the third fastener 3033 and the bracket body 301. At this time, the setting of the adhesive can improve the connection strength between the third fastener 3033 and the cover body 303, and the setting of the adhesive can also improve the connection strength between the third fastener 3033 and the bracket body 301, which can avoid loosening or falling off between the third fastener 3033 and the cover body 303 during the operation of the motor 100, and can also avoid loosening or falling off between the third fastener 3033 and the bracket body 301 during the operation of the motor 100, thereby further improving the stability of the connection between the cover body 303 and the bracket body 301.

[0140] See also Figure 2 and Figure 8 Furthermore, in some embodiments, the bracket assembly 300 also includes a first alignment member 307 and a second alignment member 308, one of the first alignment member 307 and the second alignment member 308 is arranged on the bracket body 301, and the other is arranged on the cover body 303; the first alignment member 307 and the second alignment member 308 cooperate with each other to align and connect the bracket body 301 with the cover body 303.

[0141] Specifically, the first alignment member 307 and the second alignment member 308 are structures that can be combined with each other to fix the relative positions of the bracket body 301 and the cover body 303. The first alignment member 307 and the second alignment member 308 can include multiple, and each first alignment member 307 can correspond to a second alignment member 308. In the case where at least one first alignment member 307 corresponds to and cooperates with at least one second alignment member 308, the bracket body 301 can cooperate with and align with the cover body 303, so that the opposite ends of the bracket body 301 and the cover body 303 are flush, and at the same time, the combination between the bracket body 301 and the cover body 303 is tighter and not easy to separate from each other. In some embodiments, the first alignment member 307 is arranged on the contact surface of the bracket body 301 facing the cover body 303, and the second alignment member 308 is arranged on the contact surface of the cover body 303 facing the bracket body 301, and the first alignment member 307 and the second alignment member 308 correspond in position. In one example, the first alignment member 307 is a protrusion, and the second alignment member 308 is a depression. In another example, the first alignment member 307 is a depression, and the second alignment member 308 is a protrusion. In other embodiments, the first alignment member 307 is disposed on the side wall of the bracket body 301, and the second alignment member 308 is disposed on the side wall of the cover body 303 and corresponds to the first alignment member 307.

[0142] See also Figure 2 and Figure 8 In some embodiments, the bracket assembly 300 is rigidly connected to the second end 103 of the motor 100 . Specifically, in some embodiments, the bracket assembly 300 is fixedly connected to the second end 103 of the motor 100 via a fourth fastener 309 .

[0143] Among them, along the axial direction of the motor shaft 13, the motor 100 is connected to the bracket assembly 300 through the fourth fastener 309. In the case where at least part of the structure of the motor 100 is accommodated in the bracket assembly 300, the fourth fastener 309 can penetrate the end face of the bracket assembly 300 in the axial direction of the motor shaft 13, and the second end 103 of the motor 100 is locked to fix the relative position between the motor 100 and the bracket assembly 300. At this time, the part of the structure of the motor 100 disposed in the bracket assembly 300 can neither rotate nor move relative to the bracket assembly 300. The fourth fastener 309 can limit the movement of the motor 100 relative to the bracket assembly 300 and / or the rotation of the motor 100 relative to the bracket assembly 300, so that the connection between the motor 100 and the bracket assembly 300 is more stable.

[0144] See also Figure 2 and Figure 8Specifically, in some embodiments, the fourth fastener 309 includes at least two, and at least one fourth fastener 309 extends from the end surface of the bracket assembly 300 into the bracket assembly 300 to be connected to the motor 100. In the case where there are two fourth fasteners 309, preferably, one of the second fasteners can connect the bracket body 301 and the motor housing 11, and the other second fastener can connect the cover 303 and the motor housing 11, so that both parts of the bracket assembly 300 can be firmly connected to the motor housing 11.

[0145] In one embodiment, adhesive is provided between the fourth fastener 309 and the bracket assembly 300. The provision of adhesive can further enhance the connection strength between the fourth fastener 309 and the bracket assembly 300, prevent the fourth fastener 309 and the bracket assembly 300 from loosening or falling off during the operation of the motor 100, thereby enhancing the stability of the connection between the bracket assembly 300 and the motor housing 11. In another embodiment, adhesive is provided between the fourth fastener 309 and the motor housing 11. The provision of adhesive can further enhance the connection strength between the fourth fastener 309 and the motor housing 11, prevent the fourth fastener 309 and the motor housing 11 from loosening or falling off during the operation of the motor 100, thereby enhancing the stability of the connection between the bracket assembly 300 and the motor housing 11. In another embodiment, adhesive is provided between the fourth fastener 309 and the bracket assembly 300, and adhesive is provided between the fourth fastener 309 and the motor housing 11. The provision of adhesive can further enhance the connection strength between the fourth fastener 309 and the bracket assembly 300, and the provision of adhesive can further enhance the connection strength between the fourth fastener 309 and the motor housing 11, thereby preventing the fourth fastener 309 and the bracket assembly 300 from loosening or falling off during the operation of the motor 100, and also preventing the fourth fastener 309 and the motor housing 11 from loosening or falling off during the operation of the motor 100, thereby further enhancing the stability of the connection between the motor housing 11 and the bracket assembly 300.

[0146] See also Figure 2 and Figure 8In some embodiments, the electric toothbrush 1000 further includes a mounting plate 700, which is disposed between the second end 103 of the motor 100 and the bracket assembly 300. The fourth fastener 309 sequentially passes through the bracket assembly 300 and the mounting plate 700 and is locked with the second end 103 of the motor 100 to fix the bracket assembly 300 with the second end 103 of the motor 100. The mounting plate 700 is located in the accommodating cavity 305, and the mounting plate 700 is used to install and fix the motor housing 11 so that the motor housing 11 is firmly connected to the bracket assembly 300. The fourth fastener 309 sequentially passes through the bracket assembly 300 and the mounting plate 700 and is locked with the motor housing 11, and the fourth fastener 309 can fix the bracket assembly 300 with the mounting plate 700. The mounting plate 700 abuts against the second end 103 of the motor 100, so that the motor 100 is fixedly connected with the bracket assembly 300. At this time, the end surface of the fourth fastener 309 only needs to abut against the second end 103 of the motor 100 , and the fourth fastener 309 does not need to penetrate the motor 100 , so that the overall strength of the motor 100 is higher.

[0147] The setting of the mounting plate 700 can, on the one hand, ensure that the motor 100 is accurately installed on the bracket assembly 300, thereby improving the stability of the installation of the motor 100 on the bracket assembly 300; on the other hand, it can transmit the vibration generated during the operation of the motor 100 to the bracket assembly 300, thereby dispersing and reducing the impact of the vibration on the motor 100 itself, thereby ensuring the relative position stability between the motor body 10 and the position detection device 30.

[0148] See also Figure 6 and Fig. 9 In some embodiments, the electric toothbrush 1000 further includes a handle shell 800, and at least part of the structure of the bracket assembly 300 and the motor 100 are disposed in the handle shell 800. In the present application, a first guide rail 3013 is disposed on the outside of the bracket body 301, and a first guide groove 801 corresponding to the first guide rail 3013 is disposed on the inner wall of the handle shell 800, and the first guide rail 3013 is used to cooperate with the first guide groove 801 to fix the bracket assembly 300 to the handle shell 800; a second guide rail is disposed on the outside of the cover body 303, and a second guide groove corresponding to the second guide rail is disposed on the inner wall of the handle shell 800, and the second guide rail is used to cooperate with the second guide groove to fix the bracket assembly 300 to the handle shell 800.

[0149] In which, when the support body 301 and the cover body 303 are connected to each other and the motor 100 is installed in the accommodating cavity 305, the support assembly 300 and all structures arranged on the support assembly 300 can slide into the handle shell 800 through the cooperation between the first guide rail 3013 and the first guide groove 801 and / or the cooperation between the second guide rail and the second guide groove. When the first guide rail 3013 and the second guide rail are both clamped in the corresponding first guide groove 801 and the second guide groove, the support assembly 300 and the handle shell 800 can be fixed to each other through the combination of the guide rail and the guide groove, and when the motor 100 is running, the support assembly 300 and the handle shell 800 will not shake or even rotate, and the connection between the two is more stable.

[0150] See also Figure 2 and Figure 8 In some embodiments, the electric toothbrush 1000 further includes a shock absorbing member 900 , which is disposed between the motor housing 11 and the inner wall of the bracket assembly 300 , and the shock absorbing member 900 is used to buffer the vibration between the motor housing 11 and the bracket assembly 300 .

[0151] Among them, the shock-absorbing member 900 is a structure filled between the inner wall of the motor housing 11 and the bracket assembly 300. When the motor 100 drives the brush head 600 to vibrate, the vibration generated by the driving part of the motor 100 will be transmitted to the motor housing 11, so that the motor housing 11 transmits the vibration to the bracket assembly 300 after passing through the shock-absorbing member 900. At this time, the shock-absorbing member 900 can absorb most of the vibration amplitude. The shock-absorbing member 900 can be used to buffer the vibration between the motor housing 11 and the bracket assembly 300 and can prevent the vibration of the bracket assembly 300 from causing the vibration of the entire body of the electric toothbrush 1000, thereby improving the customer's experience.

[0152] See also Figure 2 and Figure 8 In some embodiments, the shock absorbing member 900 is a soft rubber member that is sleeved on at least part of the structure of the motor housing 11. The material of the shock absorbing member 900 includes but is not limited to flexible materials such as plastic, silicone or rubber. In the case where the shock absorbing member 900 is a soft rubber member that is sleeved on the motor housing 11, when at least part of the structure of the motor 100 is installed in the bracket assembly 300, the inner wall of the shock absorbing member 900 can conflict with the motor housing 11, and the outer wall of the shock absorbing member 900 can conflict with the inner wall of the bracket assembly 300. At this time, the shock absorbing member 900 can also be partially deformed to further slow down the transmission of vibration.

[0153] See also Figure 2 and Figure 8In one embodiment, the diameter of the inner contour of the shock absorbing member 900 is greater than the diameter of the outer contour of the motor housing 11. In the case where the diameter of the inner contour of the shock absorbing member 900 is greater than the diameter of the outer contour of the motor housing 11, the shock absorbing member 900 can be sleeved outside the motor housing 11 and have a deformation gap between the shock absorbing member 900 and the motor housing 11. In the case that the motor housing 11 vibrates, at least part of the structure of the shock absorbing member 900 will be squeezed by the motor housing 11, while other parts of the structure of the shock absorbing member 900 will not contact the motor housing 11, thereby avoiding further transmission of vibration.

[0154] See also Figure 2 and Figure 8 In another embodiment, the diameter of the outer contour of the shock-absorbing member 900 is smaller than the diameter of the inner contour of the accommodating cavity 305. In the case where the diameter of the outer contour of the shock-absorbing member 900 is smaller than the diameter of the inner contour of the accommodating cavity 305, there is also a deformation gap between the shock-absorbing member 900 and the inner wall of the bracket assembly 300. In the case where the motor housing 11 vibrates, at least part of the structure of the shock-absorbing member 900 will contact the bracket assembly 300 to transmit the vibration, while other parts of the structure of the shock-absorbing member 900 will not contact the bracket assembly 300, thereby avoiding further transmission of the vibration.

[0155] See also Figure 2 and Figure 8 In another embodiment, the diameter of the inner contour of the shock-absorbing member 900 is greater than the outer contour diameter of the motor housing 11, and the outer contour diameter of the shock-absorbing member 900 is smaller than the inner contour diameter of the accommodating cavity 305. At this time, when the motor housing 11 vibrates, at least part of the structure of the shock-absorbing member 900 will be squeezed by the motor housing 11, while other parts of the structure of the shock-absorbing member 900 will not contact the motor housing 11, avoiding further transmission of vibration. At this time, at least part of the structure of the shock-absorbing member 900 will be squeezed by the motor housing 11, while other parts of the structure of the shock-absorbing member 900 will not contact the motor housing 11, avoiding further transmission of vibration.

[0156] The technical features of the above-mentioned embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification. At the same time, other implementation methods can be derived from the above-mentioned embodiments, so that structural and logical replacements and changes can be made without departing from the scope of this disclosure.

[0157] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A motor, characterized in that: include: A motor body, the motor body comprising a motor housing, a bearing and a motor shaft, the bearing being mounted on the motor housing, the motor shaft being mounted on the motor housing and passing through the bearing, and the motor shaft being able to rotate about the axis of the motor shaft; and A position detection device, the position detection device includes a fixed component, a first sensing component and a second sensing component, the fixed component is rigidly connected to one end of the motor housing, the first sensing component is fixedly installed on the motor shaft, the second sensing component is fixedly installed on the fixed component and is spaced from the first sensing component, the first sensing component and the second sensing component cooperate to detect the moving position of the motor shaft.

2. The motor according to claim 1, characterized in that The motor further comprises a first fastener, The first fastener locks the motor housing and the fixing assembly along the radial direction of the motor shaft; or, The first fastener locks the motor housing and the fixing assembly along the axial direction of the motor shaft; and / or Adhesive is provided between the first fastener and the motor housing; and / or Adhesive is provided between the first fastener and the fixing assembly.

3. The motor according to claim 1, characterized in that The motor housing includes a barrel and a first end cover, the barrel includes a first end and a second end opposite to each other, the first end of the barrel is fixedly connected to the fixing assembly, the first end cover is installed on the first end of the barrel and at least partially extends into the fixing assembly, the first induction member is sleeved on the motor shaft, and the first induction member abuts against the first end cover.

4. The motor according to claim 1, characterized in that The motor housing includes a barrel and a first end cover, the barrel includes a first end and a second end opposite to each other, the first end of the barrel is fixedly connected to the fixing assembly, the first end cover is installed on the first end of the barrel and at least partially extends into the fixing assembly, and the first induction member is sleeved on the motor shaft; the motor body also includes a gasket, which is sleeved on the motor shaft and located between the first induction member and the first end cover, and the first induction member is abutted against the first end cover through the gasket.

5. The motor according to claim 4, characterized in that The first induction member is a magnetic member; The gasket is made of magnetic isolation material; and / or At least a portion of the motor shaft used for mounting the first induction element is made of magnetic isolation material.

6. The motor according to claim 5, characterized in that The magnetic isolation material is copper or aluminum.

7. The motor according to claim 3 or 4, characterized in that: The motor housing further includes a second end cover, which is disposed at the second end of the barrel and is integrally formed with the barrel.

8. The motor according to claim 1, characterized in that The first induction member is tightly matched with the motor shaft directly or indirectly; and / or The first induction member is glued to the motor shaft directly or indirectly.

9. The motor according to claim 1, characterized in that The portion of the motor shaft for mounting the first induction member is a non-cylindrical body, and the first induction member is formed with a non-circular hole.

10. The motor according to claim 1, characterized in that The fixing assembly includes a positioning shell and a circuit board component, the second induction element is fixedly mounted on the circuit board component, the positioning shell includes a first end and a second end opposite to each other, the first end of the positioning shell is fixedly connected to the motor shell, the second end of the positioning shell is provided with a first connecting hole, the circuit board component is provided with a second connecting hole, a second fastener passes through the second connecting hole and is locked to the first connecting hole to fix the circuit board component to the second end of the positioning shell; and / or Adhesive is provided between the second fastener and the first connecting hole; and / or Adhesive is provided between the second fastener and the second connecting hole.

11. The motor according to claim 10, characterized in that The second end of the positioning shell is further provided with a limiting surface which is recessed toward the motor body relative to the outer end surface of the positioning shell. The circuit board component is carried on the limiting surface, and the outer surface of the circuit board component does not exceed the outer end surface.

12. The motor according to claim 10, characterized in that A first positioning piece is disposed at the second end of the positioning shell, and a second positioning piece is disposed at the circuit board component. The first positioning piece cooperates with the second positioning piece to position the circuit board component.

13. The motor according to claim 10, characterized in that The circuit board component is a hard circuit board, and the second induction element is arranged on a side of the hard circuit board facing the first induction element; or The circuit board component is a hard-flex circuit board, and includes a hard board portion and a soft board portion, and the second induction element is arranged on a side of the hard board portion facing the first induction element; or The circuit board component includes a flexible circuit board and a reinforcement plate, the reinforcement plate is combined with the flexible circuit board and installed together at the second end of the positioning shell, the flexible circuit board is located on the side of the reinforcement plate facing the motor shell, and the second induction element is arranged on the side of the flexible circuit board facing the first induction element.

14. The motor according to claim 10, characterized in that The positioning shell and / or the motor shell are made of metal material.

15. An electric toothbrush, characterized in that: include: Bracket assembly; and The motor described in any one of claims 1 to 14 is mounted on the bracket assembly.

16. The electric toothbrush according to claim 15, characterized in that The motor housing forms a non-moving fit with the bracket assembly; and / or The fixing assembly forms a non-moving fit with the bracket assembly.

17. The electric toothbrush according to claim 15, characterized in that The electric toothbrush also includes: A limit assembly is provided between the motor and the bracket assembly, the motor housing is connected to the bracket assembly via the limit assembly, and the limit assembly is used to limit the movement and / or rotation of the motor relative to the bracket assembly.

18. The electric toothbrush according to claim 17, characterized in that The limit assembly includes a limit assembly and a constraint assembly, the motor includes a first end and a second end opposite to each other, the limit assembly is located on the side where the second end of the motor is located, the constraint assembly is located on the side where the first end of the motor is located, and the motor forms a non-rotating fit with the bracket assembly through the limit assembly and / or the constraint assembly.

19. The electric toothbrush according to claim 17, characterized in that: The limiting assembly includes a limiting assembly, and the limiting assembly includes a first limiting member and a second limiting member, one of the first limiting member and the second limiting member is arranged on the bracket assembly, and the other is arranged on the motor housing, and the first limiting member and the second limiting member cooperate to limit the relative rotation and / or relative movement of the motor housing and the bracket assembly.

20. The electric toothbrush according to claim 17, characterized in that The limiting assembly includes a constraint assembly, which includes a first constraint member and a second constraint member. One of the first constraint member and the second constraint member is arranged on the bracket assembly, and the other is arranged on the positioning shell of the fixing assembly. The first constraint member and the second constraint member cooperate to limit the relative rotation and / or relative movement of the positioning shell and the bracket assembly.

21. The electric toothbrush according to claim 17, characterized in that The bracket assembly is formed with a bracket body and a cover body on an axial interface, the bracket body is provided with a first positioning groove, the cover body is provided with a second positioning groove, the first positioning groove and the second positioning groove together form an accommodating cavity, the motor is clamped in the accommodating cavity to limit the movement and / or rotation of the motor relative to the bracket assembly, and the cover body is fixedly mounted on the bracket body by a third fastener; and / or Adhesive is provided between the third fastener and the cover body; and / or Adhesive is provided between the third fastener and the bracket body.

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