Electric toothbrush

Abstract

The utility model discloses an electric toothbrush. The electric toothbrush comprises a support assembly, a motor and a limiting assembly. The support assembly comprises a containing cavity. The length direction of the electric toothbrush is the first direction, the motor comprises a motor shell, the motor shell is arranged in the containing cavity in any direction perpendicular to the first direction so that the support assembly can clamp at least part of the structure of the motor, and at least part of the motor shell is a cylinder. The limiting assembly is arranged between the motor and the support assembly, the motor shell is connected with the support assembly through the limiting assembly, and the limiting assembly is used for limiting movement of the motor relative to the support assembly and / or rotation of the motor relative to the support assembly with the first direction as the axis. The limiting assembly can limit rotation and movement of the cylindrical motor in the support assembly, and the motor can be directly installed in the support assembly in the direction perpendicular to the first direction so that the two opposite sides of the motor can abut against the support assembly correspondingly, and automatic assembling of the motor and the support assembly is facilitated.

Description

Technical Field

[0001] The present application relates to the field of cleaning technology, and more specifically, to an electric toothbrush. Background Art

[0002] An electric toothbrush is an electronic device that can clean the oral cavity. During the operation of the electric toothbrush, the motor in the handle drives the toothbrush head to vibrate to clean the surface and gaps of the teeth. At present, the motor is usually installed in the electric toothbrush using an axially opposite bracket assembly. However, the process of using the axial assembly of the bracket assembly is not conducive to the automatic assembly of the motor and the bracket assembly by the production machinery, resulting in the situation that the motor is difficult to be directly installed in the bracket assembly. Utility Model Content

[0003] The embodiments of the present application provide an electric toothbrush, which is at least used to solve the problem that the bracket assembly and the motor are difficult to automatically assemble.

[0004] The electric toothbrush of the embodiment of the present application includes a bracket assembly, a motor and a limit assembly. The bracket assembly includes a housing cavity. The length direction of the electric toothbrush is a first direction, and the motor includes a motor housing. The motor housing is arranged in the housing cavity along any direction perpendicular to the first direction so that the bracket assembly clamps at least part of the structure of the motor, and at least part of the motor housing is a cylinder. The limit assembly is arranged between the motor and the bracket assembly, and the motor housing is connected to the bracket assembly through the limit assembly. The limit assembly is used to limit the movement of the motor relative to the bracket assembly and / or the rotation of the motor relative to the bracket assembly along the first direction as an axis.

[0005] The limit assembly can limit the rotation and movement of the cylindrical motor in the bracket assembly, preventing the motor from rotating or displacing in the bracket assembly due to the vibration generated by the motor during operation, improving the positioning accuracy between the motor and the bracket assembly, and reducing the assembly tolerance. The motor can be directly installed in the bracket assembly along a direction perpendicular to the first direction, so that the motor can contact the bracket assembly on two opposite sides. On the one hand, the combination between the motor and the bracket assembly is more stable, and on the other hand, it is also convenient for the automatic assembly of the motor and the bracket assembly.

[0006] In some embodiments, the limit assembly includes a limit assembly and a constraint assembly. Along the first direction, the motor housing includes a first end and a second end opposite to each other, the limit assembly is located on the side where the first end of the motor housing is located, and the constraint assembly is located on the side where the second end of the motor housing is located, and the motor is non-rotatably matched with the bracket assembly through the limit assembly and / or the constraint assembly.

[0007] The limiting component and the constraining component can respectively limit the position of the motor housing relative to the bracket assembly in a first direction. On the one hand, at least one of the limiting component and / or the constraining component can prevent the motor housing from rotating relative to the bracket assembly to prevent the motor shaft of the motor-driven toothbrush head from rotating relative to the bracket assembly, causing the position of the toothbrush head to deflect, affecting the user's normal use of the electric toothbrush. On the other hand, at least one of the limiting component and / or the constraining component can also prevent the motor housing from moving in any direction relative to the bracket assembly, so that the motor housing will not shake inside the motor housing, avoiding affecting the detection accuracy of some detection mechanisms inside the electric toothbrush.

[0008] In some embodiments, 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 disposed on the bracket assembly, and the other is disposed on the motor housing. The first limiting member and the second limiting member cooperate to limit the rotation of the motor housing relative to the bracket assembly and / or limit the movement of the motor housing relative to the bracket assembly.

[0009] The first limiting member and the second limiting member are two structures respectively arranged on the bracket assembly and the motor housing. When the positions of the first limiting member and the second limiting member correspond and cooperate with each other, the motor housing can be installed in the bracket assembly. At this time, the relative position between the motor housing and the bracket assembly is fixed, and the assembly tolerance of the two is smaller.

[0010] In some embodiments, the motor housing includes an end housing and a peripheral housing connected to each other, and along the first direction, the peripheral housing includes a first end and a second end opposite to each other. The end housing cover is disposed at an opening of the first end of the peripheral housing, and the first limiting member is disposed at the end housing.

[0011] In the case where the first limiting member is disposed on the end shell, the second limiting member is disposed in the bracket assembly and corresponds to the first limiting member. In this case, the first limiting member and the second limiting member can be combined with each other at one end of the motor housing, and the peripheral side surface of the motor housing can directly contact the inner wall of the bracket assembly to avoid a large gap between the peripheral shell of the motor housing and the inner wall of the bracket assembly, thereby reducing or even avoiding the shaking of the motor in the bracket assembly.

[0012] In some embodiments, the first limiting member is a protrusion provided on the end surface of the end shell, and the second limiting member is a depression provided on the inner wall of the bracket assembly; or the first limiting member is a depression provided on the end surface of the end shell, and the second limiting member is a protrusion provided on the inner wall of the bracket assembly; or the first limiting member is a protrusion provided on the first end of the peripheral shell, and the second limiting member is a depression provided on the inner wall of the bracket assembly; or the first limiting member is a depression provided on the first end of the peripheral shell, and the second limiting member is a protrusion provided on the inner wall of the bracket assembly.

[0013] The end shell and the surrounding shell are cylindrical shells that are combined and arranged in the first direction. The first limiting member and the second limiting member are protrusions and depressions that can be engaged with each other. When the first limiting member is arranged on the end surface of the end shell, the first limiting member and the second limiting member can form abutment in the first direction to prevent the motor housing from shaking relative to the bracket assembly in the first direction. When the first limiting member is arranged on the surrounding shell, the combination of the first limiting member and the second limiting member can prevent the motor housing from rotating relative to the bracket assembly around the first direction as the axis, so that the combination between the motor and the bracket assembly is more stable.

[0014] In some embodiments, the first limiting member is disposed on the end shell and includes two, the second limiting member is disposed on the bracket assembly and includes two, each of the second limiting members cooperates with one first limiting member; the two first limiting members are arranged in sequence along a second direction, and the second direction is perpendicular to the first direction.

[0015] In the case where the first limiting members include two, the second limiting members also include two corresponding positions. The second direction is one of the radial directions on any cross section of the motor housing that is perpendicular to the first direction. When the two first limiting members are arranged along the second direction, the two first limiting members can respectively conflict with the two second limiting members to further prevent the motor housing from rotating relative to the bracket assembly.

[0016] In some embodiments, the motor shell includes an integrally formed surrounding shell and a positioning shell. Along the first direction, the surrounding shell includes a first end and a second end opposite to each other, and the positioning shell is located at the second end of the surrounding shell; the motor also includes a position detection component, which is fixed in the positioning shell.

[0017] The position detection component is a component that can detect the relative position between at least part of the structure of the motor and other structures in the bracket assembly or the electric toothbrush. The positioning shell and the end shell are respectively arranged at opposite ends of the peripheral shell along the first direction. When the motor is installed in the bracket assembly and installed in place, the end shell, the peripheral shell and the positioning shell are all located in the bracket assembly, and at this time the position detection component can detect the position of the motor drive shaft relative to the bracket assembly, so as to further determine whether the motor is installed in place or the rotation angle of the motor drive shaft relative to the motor shell or the bracket assembly, and reduce the installation tolerance between the motor and the bracket assembly.

[0018] 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, and the first constraint member and the second constraint member cooperate to constrain the rotation of the positioning shell relative to the bracket assembly and / or constrain the movement of the positioning shell relative to the bracket assembly.

[0019] The first restraint and the second restraint are two structures respectively arranged on the bracket assembly and the positioning shell. When the positions of the first restraint and the second restraint correspond and cooperate with each other, the positioning shell and the surrounding shell connected to the positioning shell can be installed in the bracket assembly. At this time, the relative position between at least part of the structure of the motor shell and the bracket assembly is fixed, and the assembly tolerance of the two is smaller. Moreover, since the position detection member is installed in the positioning shell, the position detection member can detect the position of the motor to determine the relative position between the motor and the bracket assembly.

[0020] In some embodiments, the first restraint is a protrusion provided on the peripheral side wall of the positioning shell, and the second restraint is a depression provided on the inner wall of the bracket assembly; or the first restraint is a depression provided on the peripheral side wall of the positioning shell, and the second restraint is a protrusion provided on the inner wall of the bracket assembly; or the first restraint is a protrusion provided on the end face of the positioning shell, and the second restraint is a depression provided on the inner wall of the bracket assembly; or the first restraint is a depression provided on the end face of the positioning shell, and the second restraint is a protrusion provided on the inner wall of the bracket assembly.

[0021] The positioning shell and the peripheral shell are cylindrical shells that are combined and arranged with each other in the first direction, and the positioning shell and the end shell are respectively arranged at the two ends of the peripheral shell. The first restraint and the second restraint are protrusions and depressions that can be engaged with each other. When the first restraint is arranged on the end surface of the positioning shell, the first restraint and the second restraint can form abutment in the first direction to prevent the motor housing from shaking relative to the bracket assembly in the first direction. When the first restraint is arranged on the peripheral side surface of the positioning shell, the combination of the first restraint and the second restraint can prevent the motor housing from rotating relative to the bracket assembly around the first direction as the axis, so that the combination between the motor and the bracket assembly is more stable.

[0022] In some embodiments, the bracket assembly includes a bracket body and a cover body connected to each other, the bracket body and the cover body are arranged relative to each other along a third direction perpendicular to the first direction and jointly form the accommodating cavity, the bracket body and the cover body clamp at least a partial structure of the motor; the motor housing is connected to at least one of the bracket body and the cover body through the limiting assembly.

[0023] The bracket body and the cover body are shell structures that can be combined with each other along a third direction, wherein the third direction is one of the radial directions on any cross section of the cylindrical motor shell, and the third direction can be perpendicular to the second direction which is also a radial direction. When the bracket body and the cover body are combined with each other and installed to form a whole, the bracket body and the cover body can clamp the motor shell along the third direction, so that the motor shell is installed in the accommodating cavity and contacts the inner wall of the bracket assembly, thereby reducing the shaking of the motor shell in the bracket assembly.

[0024] In some embodiments, at least one of the bracket body and the cover body is provided with a positioning groove, and the motor is clamped in the positioning groove to limit the movement of the motor relative to the bracket assembly and / or the rotation of the motor relative to the bracket assembly along the first direction as the axis.

[0025] The positioning groove can be used to accommodate at least part of the structure of the motor. When the motor is clamped in the positioning groove, along the first direction, the two opposite ends of the part of the structure of the motor disposed in the positioning groove both interfere with the bracket assembly. When the bracket body and the cover body are combined with each other, the positioning groove can participate in forming the accommodating cavity. Along the second direction, the two opposite side walls of the positioning groove can prevent the motor from shaking relative to the bracket assembly. Along the third direction, when the positioning groove is disposed in the bracket body, the bottom wall of the positioning groove and the inner wall of the cover body can also prevent the motor from shaking relative to the bracket assembly.

[0026] In some embodiments, the bracket body is provided with a first positioning groove, and the cover body is provided with a second positioning groove; when the bracket body and the cover body are in cooperation, the opening of the first positioning groove and the opening of the second positioning groove are arranged opposite to each other and jointly form the accommodating cavity, and the motor is clamped in the first positioning groove and the second positioning groove to limit the movement of the motor relative to the bracket assembly.

[0027] When the bracket body and the cover body are combined with each other, the first positioning groove and the second positioning groove can jointly form an accommodating cavity, and at this time, the bottom wall of the first positioning groove and the bottom wall of the second positioning groove can limit the movement of the motor in the third direction. Any two opposite side walls of the first positioning groove and / or the second positioning groove can limit the movement of the motor in the first direction or in the radial direction of the motor housing different from the third direction.

[0028] In some embodiments, the electric toothbrush further comprises a first fastener, and along the third direction, the cover body is connected to the bracket body via the first fastener so that the relative positions of the bracket body and the cover body are fixed.

[0029] The first fastener can be used to connect the bracket body and the cover body. When the bracket body and the cover body cooperate with each other along the third direction, the first fastener can sequentially penetrate the cover body and the bracket body along the third direction to make the bracket body and the cover body tightly combined to prevent the motor from falling off from the bracket assembly.

[0030] In some embodiments, the bracket assembly also includes a first alignment member and a second alignment member, one of the first alignment member and the second alignment member is arranged on the bracket body, and the other is arranged on the cover body; the first alignment member and the second alignment member cooperate with each other to align and connect the bracket body with the cover body.

[0031] The first alignment member and the second alignment member are structures that can be combined with each other to fix the relative positions of the bracket body and the cover body. When at least one first alignment member corresponds to and is connected with at least one second alignment member, the bracket body can cooperate with the cover body to make the opposite ends of the bracket body and the cover body flush, and at the same time, the combination between the bracket body and the cover body is tighter and not easy to separate from each other.

[0032] In some embodiments, the electric toothbrush also includes a handle shell, and at least part of the structure of the bracket assembly and the motor are arranged in the handle shell; a first guide rail is provided on the outside of the bracket body, and a first guide groove corresponding to the first guide rail is provided on the inner wall of the handle shell, and the first guide rail is used to cooperate with the first guide groove to fix the bracket assembly to the handle shell and / or the cover body is provided with a second guide rail on the outside, and a second guide groove corresponding to the second guide rail is provided on the inner wall of the handle shell, and the second guide rail is used to cooperate with the second guide groove to fix the bracket assembly to the handle shell.

[0033] When the first guide rail and the second guide rail are both clamped in the corresponding first guide groove and the second guide groove, the bracket assembly and the handle shell can be fixed to each other through the combination of the guide rail and the guide groove, and when the motor is running, there will be no shaking or even rotation between the bracket assembly and the handle shell, and the connection between the two is more stable.

[0034] In some embodiments, the bracket assembly further includes a second fastener, and the motor is connected to the bracket assembly along the first direction via the second fastener to limit the movement of the motor relative to the bracket assembly and / or the rotation of the motor relative to the bracket assembly.

[0035] The second fastener can be used to connect the bracket assembly and the motor. When at least part of the structure of the motor is accommodated in the bracket assembly, the second fastener can sequentially penetrate the end surface of the bracket assembly and the end surface of the end shell of the motor housing in the first direction to fix the relative position between the motor and the bracket assembly. At this time, the part of the motor structure disposed in the bracket assembly can neither rotate nor move relative to the bracket assembly, and the connection between the two is more stable.

[0036] In certain embodiments, along the first direction, the bracket assembly includes a first end and a second end opposite to each other, the second fasteners include at least two, at least one of the second fasteners extends from the end surface of the first end of the bracket assembly into the bracket assembly to be connected to the motor, and at least two of the second fasteners are arranged in sequence along a fourth direction, and the fourth direction is perpendicular to the first direction and intersects with the third direction.

[0037] In the case where there are two first limiting members, the two first limiting members will be arranged along the second direction on the end surface of the end shell of the motor housing. In order to allow the second fastener to avoid the first limiting member, the arrangement direction of the two second fasteners can be a fourth direction that has an angle with the second direction and the third direction. At the same time, in the case where the two second fasteners are arranged along the fourth direction with the end surface of the bracket assembly, one of the second fasteners can connect the bracket body with the motor housing, and the other second fastener can connect the cover body with the motor housing, so that both parts of the bracket assembly can be firmly connected to the motor housing.

[0038] In some embodiments, the electric toothbrush further includes a circuit board, which is disposed on one side of the bracket assembly along a third direction. The electric toothbrush further includes a first fastener, which is disposed on the other side of the bracket assembly and is indented on a side away from the circuit board.

[0039] The circuit board can be connected to the electrical structure in the electric toothbrush such as the motor or the position detector to supply power. The circuit board and the first fastener are arranged opposite to each other along the third direction, that is, when the circuit board is installed on the side of the bracket body away from the cover body, the first fastener extends from the cover body to the bracket body and fixes the bracket body and the cover body. When the circuit board is installed on the side of the cover body away from the bracket body, the first fastener extends from the bracket body to the cover body and fixes the bracket body and the cover body. At this time, the first fastener cannot penetrate the bracket assembly, avoiding the first fastener from affecting the circuit board.

[0040] In some embodiments, the electric toothbrush further includes a shock-absorbing member, which is disposed between the motor housing and an inner wall of the bracket assembly, and is used to buffer vibrations between the motor housing and the bracket assembly.

[0041] The shock absorber is a structure filled between the motor housing and the bracket assembly. When the motor drives the toothbrush head to vibrate, the vibration generated by the driving part of the motor will be transmitted to the motor housing, so that the motor housing transmits the vibration to the bracket assembly through the shock absorber. At this time, the shock absorber can absorb most of the vibration amplitude and prevent the vibration of the bracket assembly from causing the vibration of the entire electric toothbrush body, thereby improving the customer's experience.

[0042] In some embodiments, the shock absorbing component is a soft rubber component that is sleeved outside at least a portion of the structure of the motor housing.

[0043] In the case where the shock-absorbing member is a soft rubber member sleeved on the motor housing, when at least part of the structure of the motor is installed in the bracket assembly, the inner wall of the shock-absorbing member can contact the motor housing, and the outer wall of the shock-absorbing member can contact the inner wall of the bracket assembly. At this time, the shock-absorbing member can also partially deform to further reduce the transmission of vibration.

[0044] In certain embodiments, the diameter of the inner contour of the shock absorbing member is larger than the diameter of the outer contour of the motor housing and / or the diameter of the outer contour of the shock absorbing member is smaller than the diameter of the inner contour of the accommodating cavity.

[0045] In the case where the diameter of the inner contour of the shock-absorbing component is larger than the diameter of the outer contour of the motor housing, the shock-absorbing component can be sleeved outside the motor housing and have a deformation gap with the motor housing. In the case where the motor housing vibrates, at least part of the structure of the shock-absorbing component will be squeezed by the motor housing, while other parts of the structure of the shock-absorbing component will not contact the motor housing, thereby avoiding further transmission of vibration. In the case where the diameter of the outer contour of the shock-absorbing component is smaller than the diameter of the inner contour of the accommodating cavity, there is also a deformation gap between the shock-absorbing component and the inner wall of the bracket assembly. In the case where the motor housing vibrates, at least part of the structure of the shock-absorbing component will contact the bracket assembly to transmit vibration, while other parts of the structure of the shock-absorbing component will not contact the bracket assembly, thereby avoiding further transmission of vibration.

[0046] Additional aspects and advantages of the embodiments 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 embodiments of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] 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:

[0048] Figure 1 is a three-dimensional schematic diagram of an electric toothbrush according to certain embodiments of the present application;

[0049] Figure 2 is a three-dimensional schematic diagram of a partial structure of an electric toothbrush according to some embodiments of the present application;

[0050] Figure 3 yes Figure 2 An exploded schematic diagram of a bracket assembly of an electric toothbrush is shown;

[0051] Figure 4 yes Figure 1 An exploded schematic diagram of an electric toothbrush from a certain perspective is shown;

[0052] Figure 5 yes Figure 1 An exploded schematic diagram of the electric toothbrush shown in another perspective;

[0053] Figure 6 yes Figure 2 A three-dimensional schematic diagram of a motor of an electric toothbrush shown;

[0054] Figure 7 yes Figure 6 An exploded schematic diagram of the motor shown;

[0055] Figure 8 yes Figure 2 A schematic plan view of a partial structure of an electric toothbrush shown;

[0056] Fig. 9 yes Figure 2 An exploded schematic diagram of a partial structure of an electric toothbrush shown in a certain perspective;

[0057] Fig.10 yes Figure 2 A schematic diagram of an exploded view of a partial structure of an electric toothbrush from another perspective is shown.

[0058] Description of main component symbols:

[0059] 100, electric toothbrush; X, first direction; Y, second direction; Z, third direction; A, fourth direction; 10, bracket assembly; 101, first end of bracket assembly; 102, second end of bracket assembly; 103, first side of bracket assembly; 104, second side of bracket assembly; 105, accommodating cavity; 11, bracket body; 13, cover body; 15, positioning groove; 151, first positioning groove; 153, second positioning groove; 171, first alignment member; 173, second alignment member; 181, first guide rail; 183, first guide groove; 191, second guide rail; 193, first Two guide grooves; 20, motor; 21, motor housing; 201, first end of motor housing; 203, second end of motor housing; 211, end housing; 213, peripheral housing; 2131, first end of peripheral housing; 2133, second end of peripheral housing; 23, positioning housing; 25, position detection member; 30, limit assembly; 31, limiting assembly; 311, first limiting member; 313, second limiting member; 33, restraining assembly; 331, first restraining member; 333, second restraining member; 40, first fastener; 50, handle housing; 60, second fastener; 70, circuit board; 80, shock-absorbing member. DETAILED DESCRIPTION

[0060] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions from beginning to end. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the embodiments of the present application, and cannot be understood as limiting the embodiments of the present application.

[0061] In the description of the present application, it should be understood that the terms "thickness", "upper", "top", "bottom", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0062] In the description of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. In an example, it can be a fixed connection, or a detachable connection, or an integral connection; it can be a mechanical connection, or an electrical connection, or they can communicate with each other; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements.

[0063] See also Figures 1 to 3 The electric toothbrush 100 of the present application includes a bracket assembly 10, a motor 20 and a stop assembly 30. The bracket assembly 10 includes a receiving cavity 105. The length direction of the electric toothbrush 100 is a first direction X, and the motor 20 includes a motor housing 21 ( Figure 6 ), motor housing 21 ( Figure 6 ) is disposed in the accommodating cavity 105 along a direction perpendicular to the first direction X so that the bracket assembly 10 clamps at least a portion of the structure of the motor 20, and the motor housing 21 ( Figure 6 The limiting assembly 30 is disposed between the motor 20 and the bracket assembly 10, and the motor housing 21 ( Figure 6 ) through the limit assembly 30 ( Fig. 9 ) is connected to the bracket assembly 10, and the limit assembly 30 ( Fig. 9 (as shown) is used to limit the movement of the motor 20 relative to the bracket assembly 10 and / or the rotation of the motor 20 relative to the bracket assembly 10 along the first direction X as the axis.

[0064] The electric toothbrush 100 includes a connected brush handle and a toothbrush head, and the brush handle includes a connected handle shell 50, a bracket assembly 10 and a motor 20, and at least part of the structure of the bracket assembly 10 and the motor 20 are arranged in the handle shell 50. The drive shaft of the motor 20 extends out of the brush handle to connect with the toothbrush head, and the extension direction of the motor 20 is the same as the extension direction of the brush handle. The first direction X can be the length direction of the brush handle or the length direction of the toothbrush head. When the motor 20 drives the toothbrush head to vibrate, the relative position between the motor housing 21 of the motor 20 and the bracket assembly 10 will not change, and the drive shaft of the motor 20 can rotate relative to the motor housing 21 and the bracket assembly 10 around the first direction X as an axis. When the motor housing 21 is a cylindrical structure, the electric toothbrush 100 also has a second direction Y and a third direction Z. The second direction Y and the third direction Z are different radial directions of the motor housing 21, respectively, and the second direction Y and the third direction Z are both perpendicular to the first direction X, and the second direction Y and the third direction Z are perpendicular to each other. The limit assembly 30 can limit the rotation and movement of the cylindrical motor 20 in the bracket assembly 10, and prevent the motor 20 from rotating or shifting in the bracket assembly 10 due to the vibration generated by the motor 20 during operation, thereby improving the positioning accuracy between the motor 20 and the bracket assembly 10 and reducing the assembly tolerance. The motor 20 can be directly installed in the bracket assembly 10 along any direction perpendicular to the first direction X, so that the motor 20 can contact the bracket assembly 10 on two opposite sides. On the one hand, the combination between the motor 20 and the bracket assembly 10 is more stable, and on the other hand, it is also convenient for the automatic assembly of the motor 20 and the bracket assembly 10.

[0065] The electric toothbrush 100 is further described below with reference to the accompanying drawings.

[0066] See also Figure 2 and Figure 3 , and combined with Figure 6In some embodiments, the bracket assembly 10 is a structure capable of installing the motor 20 and connecting other components of the electric toothbrush 100. The material of the bracket assembly 10 includes but is not limited to metal, plastic or rubber. The accommodating cavity 105 of the bracket assembly 10 can be used to accommodate at least part of the structure of the motor 20, for example: the motor housing 21 and the part of the structure of the motor 20 body disposed in the motor housing 21. The support assembly can fix at least part of the motor 20 (for example: the motor housing 21) disposed in the accommodating cavity 105, so that the motor housing 21 and the bracket assembly 10 are non-rotatingly matched, that is, there is no relative rotation between the motor housing 21 and the bracket assembly 10. At the same time, the bracket assembly 10 can also limit the position of the motor 20, so that there is no relative movement between the motor housing 21 and the bracket assembly 10, avoiding a large assembly tolerance between the motor 20 and the bracket assembly 10. The motor housing 21 can be completely accommodated in the accommodating cavity 105, or partially accommodated in the accommodating cavity 105, and the other part is located in the space between the handle housing 50 and the bracket assembly 10, which is not limited here. Along the first direction X, the bracket assembly 10 includes a first end 101 and a second end 102 opposite to each other. The driving shaft of the motor 20 extends from the first end 101 of the bracket assembly 10 to the outside of the bracket assembly 10 and the handle shell 50 to connect to the toothbrush head.

[0067] Specifically, in some embodiments, the bracket assembly 10 includes a bracket body 11 and a cover body 13 connected to each other, and the bracket body 11 and the cover body 13 are shell structures that can be combined with each other along a third direction Z, wherein the third direction Z is one of the radial directions on any cross section of the cylindrical motor housing 21, the third direction Z is perpendicular to the first direction X, and the third direction Z can be perpendicular to the second direction Y which is also a radial direction. The bracket body 11 and the cover body 13 can be either a separate molded structure or an integrally molded structure, which is not limited here. The materials of the bracket body 11 and the cover body 13 can be the same or different. In some embodiments, the length of the bracket body 11 along the first direction X is greater than the length of the cover body 13, that is, the cover body 13 can be connected to a part of the structure of the bracket body 11. The bracket body 11 can also be used to install or connect other structures in the electric toothbrush 100, such as a battery. Along a third direction Z perpendicular to the first direction X, the bracket assembly 10 includes a first side and a second side opposite to each other, the bracket body 11 and the cover body 13 are arranged opposite to each other along the third direction Z, the side of the cover body 13 away from the bracket body 11 is the first side 103 of the bracket assembly 10, and the side of the bracket body 11 away from the cover body 13 is the second side 104 of the bracket assembly 10. The bracket body 11 and the cover body 13 can form a closed but not sealed accommodating cavity 105 together, and the accommodating cavity 105 can be used to accommodate at least part of the structure of the motor 20. When the bracket body 11 and the cover body 13 are combined with each other and installed to form a whole, the bracket body 11 and the cover body 13 can clamp at least part of the structure of the motor 20 (for example: the motor housing 21) along the third direction Z, so that the motor housing 21 is installed in the accommodating cavity 105 and contacts the inner wall of the bracket assembly 10, reducing the shaking of the motor housing 21 in the bracket assembly 10. In some embodiments, the motor housing 21 is connected to the bracket body 11 or the cover body 13 through a stop assembly 30. In other embodiments, the motor housing 21 is connected to the bracket body 11 and the cover body 13 respectively through the limiting assembly 30 so that the position of the motor 20 relative to the bracket assembly 10 is fixed.

[0068] More specifically, in some embodiments, at least one of the bracket body 11 and the cover body 13 is provided with a positioning groove 15, and the positioning groove 15 can be used to accommodate at least part of the structure of the motor 20. When the motor 20 is stuck in the positioning groove 15, along the first direction X, the opposite ends of the part of the structure of the motor 20 disposed in the positioning groove 15 are in conflict with the bracket assembly 10, and the opposite sides of the part of the structure of the motor 20 disposed in the positioning groove 15 along the second direction Y can also conflict with the bracket assembly 10. When the bracket body 11 and the cover body 13 are combined with each other, the positioning groove 15 can participate in forming the accommodating cavity 105. In some embodiments, the positioning groove 15 can be used to limit the movement of the motor 20 relative to the bracket assembly 10. Along the second direction Y, the two opposite side walls of the positioning groove 15 can prevent the motor 20 from shaking relative to the bracket assembly 10. Along the third direction Z, when the positioning groove 15 is disposed in the bracket body 11, the bottom wall of the positioning groove 15 and the inner wall of the cover body 13 can also prevent the motor 20 from shaking relative to the bracket assembly 10. In other embodiments, the positioning groove 15 can also be used to limit the rotation of the motor 20 relative to the bracket assembly 10 along the first direction X. Part of the structure of the positioning groove 15 can cooperate with at least part of the structure of the motor 20. When the motor 20 drives the toothbrush head to vibrate, the part of the structure of the motor 20 disposed in the positioning groove 15 will have a tendency to twist relative to the bracket assembly 10. The part of the structure in the positioning groove 15 can mutually press against and apply a reverse twisting force to at least part of the structure of the motor 20, thereby preventing the motor 20 from rotating relative to the bracket assembly 10.

[0069] Further, in some embodiments, the bracket body 11 is provided with a first positioning groove 151, and the cover body 13 is provided with a second positioning groove 153; when the bracket body 11 and the cover body 13 are matched, the opening of the first positioning groove 151 and the opening of the second positioning groove 153 are arranged opposite to each other and jointly form the accommodating cavity 105, and the motor 20 is clamped in the first positioning groove 151 and the second positioning groove 153 to limit the movement of the motor 20 relative to the bracket assembly 10. For example: the bottom wall of the first positioning groove 151 and the bottom wall of the second positioning groove 153 can limit the movement of the motor 20 in the third direction Z. Any two opposite side walls of the first positioning groove 151 and / or the second positioning groove 153 can limit the movement of the motor 20 in the first direction X or in the radial direction of the motor housing 21 different from the third direction Z.

[0070] More specifically, in some embodiments, the bracket assembly 10 may further include a first alignment member 171 and a second alignment member 173, and the first alignment member 171 and the second alignment member 173 are structures that can be combined with each other to fix the relative positions of the bracket body 11 and the cover body 13. One of the first alignment member 171 and the second alignment member 173 is provided on the bracket body 11, and the other is provided on the cover body 13. The first alignment member 171 and the second alignment member 173 may include a plurality of them, and each first alignment member 171 can correspond to a second alignment member 173. In the case where at least one first alignment member 171 corresponds to and cooperates with at least one second alignment member 173, the bracket body 11 can cooperate with and align with the cover body 13, so that the opposite ends of the bracket body 11 and the cover body 13 are respectively flush, and at the same time, the combination between the bracket body 11 and the cover body 13 is more tightly, and it is not easy to separate from each other. In some embodiments, the first alignment member 171 is disposed on the contact surface of the bracket body 11 facing the cover body 13, and the second alignment member 173 is disposed on the contact surface of the cover body 13 facing the bracket body 11, and the first alignment member 171 and the second alignment member 173 correspond in position. In one example, the first alignment member 171 is a protrusion, and the second alignment member 173 is a depression. In another example, the first alignment member 171 is a depression, and the second alignment member 173 is a protrusion. In other embodiments, the first alignment member 171 is disposed on the side wall of the bracket body 11, and the second alignment member 173 is disposed on the side wall of the cover body 13 and corresponds to the first alignment member 171.

[0071] Specifically, please combine Figure 4 and Figure 5 In some embodiments, the outside of the bracket body 11 is provided with a first guide rail 181, and the inner wall of the handle shell 50 is provided with a first guide groove 183 corresponding to the first guide rail 181, and the first guide rail 181 is used to cooperate with the first guide groove 183 to fix the bracket assembly 10 to the handle shell 50. The outside of the cover body 13 is provided with a second guide rail 191, and the inner wall of the handle shell 50 is provided with a second guide groove 193 corresponding to the second guide rail 191, and the second guide rail 191 is used to cooperate with the second guide groove 193 to fix the bracket assembly 10 to the handle shell 50. When the bracket body 11 and the cover body 13 are connected to each other and the motor 20 is installed in the accommodating cavity 105, the bracket assembly 10 and all structures provided on the bracket assembly 10 can slide into the handle shell 50 through the cooperation between the first guide rail 181 and the first guide groove 183 and / or the cooperation between the second guide rail 191 and the second guide groove 193. When the first guide rail 181 and the second guide rail 191 are both clamped in the corresponding first guide groove 183 and the second guide groove 193, the bracket assembly 10 and the handle shell 50 can be fixed to each other through the combination of the guide rails and the guide grooves, and when the motor 20 is running, there will be no shaking or even rotation between the bracket assembly 10 and the handle shell 50, and the connection between the two is more stable.

[0072] See also Figure 6 and Figure 7 , and combined with Figure 2 In some embodiments, the motor 20 is a component that is partially installed in the bracket assembly 10 and can drive the toothbrush head to vibrate. The motor 20 includes a motor housing 21, a drive shaft and a position detection member 25. The position detection member 25 is a component that can detect the relative position between at least part of the structure of the motor 20 and other structures in the bracket assembly 10 or the electric toothbrush 100. Along the first direction X, the motor housing 21 includes a first end 201 and a second end 203 that are opposite to each other. The drive shaft of the motor 20 extends from the first end 201 and / or the second end of the motor housing 21 along the first direction X. The drive shaft of the motor 20 can drive the toothbrush head to vibrate to clean the teeth or the inner wall of the oral cavity, and can also cooperate with other detection mechanisms in the electric toothbrush 100 to detect the relative position relationship between the motor 20 and the bracket assembly 10 or the rotation angle of the motor 20 shaft relative to the motor housing 21 and other structures.

[0073] Specifically, in some embodiments, the motor housing 21 includes an end housing 211, a peripheral housing 213 and a positioning housing 23. The end housing 211, the peripheral housing 213 and the positioning housing 23 are cylindrical housings that can be combined with each other and arranged in sequence in the first direction X. The positioning housing 23 and the end housing 211 are respectively arranged at opposite ends of the peripheral housing 213 along the first direction X. Along the first direction X, the peripheral housing 213 includes a first end 2131 and a second end 2133 that are opposite to each other. The end housing 211 covers the opening of the first end 2131 of the peripheral housing 213 and is connected to the peripheral housing 213. The driving shaft of the motor 20 can extend from the end surface of the end housing 211. The positioning housing 23 is located at the second end 2133 of the peripheral housing 213, and the position detection member 25 is fixed in the positioning housing 23. That is, the end where the end housing 211 is located is the first end 201 of the motor housing 21, and the end where the positioning housing 23 is located is the second end 203 of the motor housing 21. The peripheral side surface of the positioning shell 23, the peripheral side surface of the peripheral shell 213 and the peripheral side surface of the end shell 211 together constitute the peripheral side surface of the motor shell 21. The end surface of the end shell 211 is the end surface of the first end 201 of the motor shell 21, and the end surface of the positioning shell 23 is the end surface of the second end 203 of the motor shell 21. In some embodiments, the peripheral shell 213 and the positioning shell 23 are integrally formed, and in other embodiments, the positioning shell 23 and the peripheral shell 213 are separately formed, and the positioning shell 23 is installed at the second end 2133 of the peripheral shell 213. When the motor 20 is installed in the bracket assembly 10 and installed in place, the end shell 211, the peripheral shell 213 and the positioning shell 23 are all located in the bracket assembly 10, and at this time, the position detection member 25 can detect the position of the drive shaft of the motor 20 relative to the bracket assembly 10, so as to further determine whether the motor 20 is installed in place or the rotation angle of the drive shaft of the motor 20 relative to the motor shell 21 or the bracket assembly 10, and reduce the installation tolerance between the motor 20 and the bracket assembly 10.

[0074] See also Fig. 9 and Fig.10 In some embodiments, the limiting assembly 30 is a structure capable of limiting the relative position between the motor 20 and the bracket assembly 10. Specifically, the limiting assembly 30 includes a limiting assembly 31 and a constraining assembly 33. The limiting assembly 31 and the constraining assembly 33 can respectively limit the position of the motor housing 21 relative to the bracket assembly 10 in the first direction X. The limiting assembly 31 is located on the side where the first end 201 of the motor housing 21 is located, and the constraining assembly 33 is located on the side where the second end 203 of the motor housing 21 is located. The motor 20 is non-rotatingly matched with the bracket assembly 10 through the limiting assembly 31 and / or the constraining assembly 33. On the one hand, at least one of the limiting assembly 31 and / or the constraining assembly 33 can prevent the motor housing 21 from rotating relative to the bracket assembly 10, so as to prevent the motor 20 shaft that drives the toothbrush head of the motor 20 from rotating relative to the bracket assembly 10, causing the position of the toothbrush head to deflect, affecting the user's normal use of the electric toothbrush 100. On the other hand, at least one of the limiting component 31 and / or the restraining component 33 can also prevent the motor housing 21 from moving in any direction relative to the bracket assembly 10, so that the motor housing 21 will not shake inside the motor housing 21, thereby avoiding affecting the detection accuracy of some detection mechanisms inside the electric toothbrush 100.

[0075] Further, in some embodiments, the limiting assembly 31 includes a first limiting member 311 and a second limiting member 313, and the first limiting member 311 and the second limiting member 313 are two structures respectively arranged on the bracket assembly 10 and the motor housing 21. One of the first limiting member 311 and the second limiting member 313 is arranged on the bracket assembly 10, and the other is arranged on the motor housing 21. When the positions of the first limiting member 311 and the second limiting member 313 correspond to each other and cooperate with each other, the motor housing 21 can be installed in the bracket assembly 10. At this time, the relative position between the motor housing 21 and the bracket assembly 10 is fixed, and the first limiting member 311 and the second limiting member 313 can jointly limit the rotation of the motor housing 21 relative to the bracket assembly 10 and / or limit the movement of the motor housing 21 relative to the bracket assembly 10, and the assembly tolerance of the two is smaller.

[0076] Specifically, in some embodiments, the first limiting member 311 and the second limiting member 313 are protrusions and depressions that can be engaged with each other, and the first limiting member 311 and the second limiting member 313 can be combined with each other at one end of the motor housing 21, and the peripheral side surface of the motor housing 21 can directly contact the inner wall of the bracket assembly 10 to avoid a large gap between the peripheral shell 213 of the motor housing 21 and the inner wall of the bracket assembly 10, thereby reducing or even avoiding the shaking of the motor 20 in the bracket assembly 10.

[0077] In some embodiments, the first limiting member 311 is provided on the end shell 211, and the second limiting member 313 is provided in the bracket assembly 10 and corresponds to the first limiting member 311. In the case where the first limiting member 311 is provided on the end surface of the end shell 211, the first limiting member 311 and the second limiting member 313 can form abutment in the first direction X to prevent the motor housing 21 from shaking relative to the bracket assembly 10 in the first direction X. In one example, the first limiting member 311 is a protrusion provided on the end surface of the end shell 211, and the second limiting member 313 is a depression provided on the inner wall of the bracket assembly 10. In another example, the first limiting member 311 is a depression provided on the end surface of the end shell 211, and the second limiting member 313 is a protrusion provided on the inner wall of the bracket assembly 10. In other embodiments, the first limiting member 311 is provided at the first end 2131 of the peripheral shell 213, and the second limiting member 313 is provided in the bracket assembly 10 and corresponds to the first limiting member 311. In the case where the first limiting member 311 is disposed on the surrounding shell 213, the combination of the first limiting member 311 and the second limiting member 313 can prevent the motor housing 21 from rotating relative to the bracket assembly 10 around the first direction X as the axis, so that the combination between the motor 20 and the bracket assembly 10 is more stable. In one example, the first limiting member 311 is a protrusion disposed on the first end 2131 of the surrounding shell 213, and the second limiting member 313 is a depression disposed on the inner wall of the bracket assembly 10. In another example, the first limiting member 311 is a depression disposed on the first end 2131 of the surrounding shell 213, and the second limiting member 313 is a protrusion disposed on the inner wall of the bracket assembly 10.

[0078] More specifically, please combine Figure 8 In some embodiments, the first limiting member 311 is provided on the end shell 211 and includes two, the second limiting member 313 is provided on the bracket assembly 10 and includes two, each second limiting member 313 cooperates with one first limiting member 311; the two first limiting members 311 are arranged in sequence along the second direction Y. The second direction Y is one of the radial directions on any cross section of the motor housing 21 that is perpendicular to the first direction X, and the second direction Y is perpendicular to the first direction X. When the two first limiting members 311 are arranged along the second direction Y, the two first limiting members 311 can respectively conflict with the two second limiting members 313. When the motor housing 21 has a tendency to rotate relative to the bracket assembly 10, the first limiting member 311 and the second limiting member 313 will abut against each other and generate a torsional force in the opposite direction to the rotation tendency of the motor housing 21, so as to further prevent the motor housing 21 from rotating relative to the bracket assembly 10.

[0079] Furthermore, in some embodiments, the constraint assembly 33 includes a first constraint member 331 and a second constraint member 333, and the first constraint member 331 and the second constraint member 333 are two structures respectively arranged on the bracket assembly 10 and the positioning shell 23. One of the first constraint member 331 and the second constraint member 333 is arranged on the bracket assembly 10, and the other is arranged on the positioning shell 23. When the positions of the first constraint member 331 and the second constraint member 333 correspond to each other and cooperate with each other, the first constraint member 331 and the second constraint member 333 can constrain the rotation of the positioning shell 23 relative to the bracket assembly 10 and / or constrain the movement of the positioning shell 23 relative to the bracket assembly 10. At this time, the positioning shell 23 and the surrounding shell 213 connected to the positioning shell 23 can be installed in the bracket assembly 10, and the relative position between at least part of the structure of the motor housing 21 and the bracket assembly 10 is fixed, and the assembly tolerance of the two is smaller. Furthermore, since the position detecting member 25 is installed in the positioning housing 23 , the position detecting member 25 can detect the position of the motor 20 to determine the relative position between the motor 20 and the bracket assembly 10 .

[0080] Specifically, in some embodiments, the first restraint 331 and the second restraint 333 are protrusions and depressions that can engage with each other. In some embodiments, the first restraint 331 is provided on the end surface of the positioning shell 23, and the second restraint 333 is provided on the bracket assembly 10 and corresponds to the first restraint 331. The first restraint 331 and the second restraint 333 can form abutment in the first direction X to prevent the motor housing 21 from shaking relative to the bracket assembly 10 in the first direction X. In one example, the first restraint 331 is a protrusion provided on the end surface of the positioning shell 23, and the second restraint 333 is a depression provided on the inner wall of the bracket assembly 10. In another example, the first restraint 331 is a depression provided on the end surface of the positioning shell 23, and the second restraint 333 is a protrusion provided on the inner wall of the bracket assembly 10. In other embodiments, the first restraint 331 is disposed on the peripheral side of the positioning shell 23, and the second restraint 333 is disposed on the bracket assembly 10 and corresponds to the first restraint 331. The combination of the first restraint 331 and the second restraint 333 can prevent the motor housing 21 from rotating relative to the bracket assembly 10 around the first direction X as the axis, so that the combination between the motor 20 and the bracket assembly 10 is more stable. In one example, the first restraint 331 is a protrusion disposed on the peripheral side wall of the positioning shell 23, and the second restraint 333 is a depression disposed on the inner wall of the bracket assembly 10. In another example, the first restraint 331 is a depression disposed on the peripheral side wall of the positioning shell 23, and the second restraint 333 is a protrusion disposed on the inner wall of the bracket assembly 10.

[0081] See also Figure 3 and Figure 8In some embodiments, the electric toothbrush 100 may further include a first fastener 40, which can be used to connect the bracket body 11 and the cover body 13. When the bracket body 11 and the cover body 13 cooperate with each other along the third direction Z, the first fastener 40 can penetrate the cover body 13 and the bracket body 11 in sequence along the third direction Z, so that the bracket body 11 and the cover body 13 are tightly combined to prevent the motor 20 from falling off from the bracket assembly 10. The material of the first fastener 40 includes but is not limited to metal, plastic or rubber. For example, the first fastener 40 can be a screw, a screw or a bolt that penetrates the bracket body 11 and the cover body 13. The first fastener 40 may include multiple, and the installation direction of each first fastener 40 is the third direction Z.

[0082] Furthermore, please combine Fig. 9 In some embodiments, the electric toothbrush 100 may further include a circuit board 70, which can be connected to the electrical structure in the electric toothbrush 100 such as the motor 20 or the position detection member 25 to supply power. The circuit board 70 and the first fastener 40 are arranged opposite to each other along the third direction Z. The circuit board 70 is arranged on one side of the bracket assembly 10 along the third direction Z, and the first fastener 40 is arranged on the other side of the bracket assembly 10 and is retracted on the side away from the circuit board 70. That is, when the circuit board 70 is installed on the cover body 13 and is located on the first side 103 of the bracket assembly 10, the first fastener 40 extends from the bracket body 11 to the cover body 13 and fixes the bracket body 11 and the cover body 13. When the circuit board 70 is installed on the bracket body 11 and is located on the second side 104 of the bracket assembly 10, the first fastener 40 extends from the cover body 13 to the bracket body 11 and fixes the bracket body 11 and the cover body 13. At this time, the first fastener 40 cannot penetrate the bracket assembly 10, so as to avoid the first fastener 40 from affecting the circuit board 70.

[0083] See also Figure 2 and Figure 8 In some embodiments, the bracket assembly 10 may further include a second fastener 60, which is a structure that can be used to connect the bracket assembly 10 and the motor 20. Along the first direction X, the motor 20 is connected to the bracket assembly 10 through the second fastener 60. When at least part of the structure of the motor 20 is accommodated in the bracket assembly 10, the second fastener 60 can sequentially penetrate the end surface of the bracket assembly 10 and the end surface of the end shell 211 of the motor shell 21 in the first direction X, so that the relative position between the motor 20 and the bracket assembly 10 is fixed. At this time, the part of the structure of the motor 20 disposed in the bracket assembly 10 can neither rotate nor move relative to the bracket assembly 10. The second fastener 60 can limit the movement of the motor 20 relative to the bracket assembly 10 and / or the rotation of the motor 20 relative to the bracket assembly 10, so that the connection between the motor 20 and the bracket assembly 10 is more stable.

[0084] Specifically, in some embodiments, the second fasteners 60 include at least two, at least one second fastener 60 extends from the end surface of the first end 101 of the bracket assembly 10 into the bracket assembly 10 to connect with the motor 20, and at least two second fasteners 60 are arranged in sequence along the fourth direction A, and the fourth direction A is perpendicular to the first direction X and intersects with the second direction Y and the third direction Z. The fourth direction A is the radial direction of the motor housing 21 along any cross section perpendicular to the first direction X, and the fourth direction A is different from the second direction Y and the third direction Z. In the case where there are two first limiting members 311, the two first limiting members 311 will be arranged on the end surface of the end shell 211 of the motor housing 21 along the second direction Y. In order to enable the second fastener 60 to avoid the first limiting member 311, the arrangement direction of the two second fasteners 60 can be the fourth direction A that has an angle with both the second direction Y and the third direction Z. At the same time, when the two second fasteners 60 are arranged along the fourth direction A and the end face of the bracket assembly 10, one of the second fasteners 60 can connect the bracket body 11 and the motor housing 21, and the other second fastener 60 can connect the cover body 13 and the motor housing 21, so that both parts of the bracket assembly 10 can be firmly connected to the motor housing 21.

[0085] See also Figure 2 and Figure 6 In some embodiments, the electric toothbrush 100 may further include a shock-absorbing member 80, which is a structure filled between the motor housing 21 and the inner wall of the bracket assembly 10. When the motor 20 drives the toothbrush head to vibrate, the vibration generated by the driving part of the motor 20 will be transmitted to the motor housing 21, so that the motor housing 21 transmits the vibration to the bracket assembly 10 after passing through the shock-absorbing member 80. At this time, the shock-absorbing member 80 can absorb most of the vibration amplitude. The shock-absorbing member 80 can be used to buffer the vibration between the motor housing 21 and the bracket assembly 10 and prevent the vibration of the bracket assembly 10 from causing the vibration of the entire body of the electric toothbrush 100, thereby improving the customer's experience.

[0086] Specifically, in some embodiments, the shock absorbing member 80 is a soft rubber member that is sleeved on at least part of the structure of the motor housing 21. The material of the shock absorbing member 80 includes but is not limited to flexible materials such as plastic, silicone or rubber. In the case where the shock absorbing member 80 is a soft rubber member that is sleeved on the motor housing 21, when at least part of the structure of the motor 20 is installed in the bracket assembly 10, the inner wall of the shock absorbing member 80 can conflict with the motor housing 21, and the outer wall of the shock absorbing member 80 can conflict with the inner wall of the bracket assembly 10. At this time, the shock absorbing member 80 can also be partially deformed to further slow down the transmission of vibration.

[0087] More specifically, in some embodiments, the diameter of the inner contour of the shock-absorbing member 80 is greater than the diameter of the outer contour of the motor housing 21. In the case where the diameter of the inner contour of the shock-absorbing member 80 is greater than the diameter of the outer contour of the motor housing 21, the shock-absorbing member 80 can be sleeved outside the motor housing 21 and have a deformation gap between the shock-absorbing member 80 and the motor housing 21. In the case where the motor housing 21 vibrates, at least part of the structure of the shock-absorbing member 80 will be squeezed by the motor housing 21, while other parts of the structure of the shock-absorbing member 80 will not contact the motor housing 21, thereby avoiding further transmission of vibration.

[0088] More specifically, in some embodiments, the diameter of the outer contour of the shock-absorbing member 80 is smaller than the diameter of the inner contour of the accommodating cavity 105. In the case where the diameter of the outer contour of the shock-absorbing member 80 is smaller than the diameter of the inner contour of the accommodating cavity 105, there is also a deformation gap between the shock-absorbing member 80 and the inner wall of the bracket assembly 10. In the case where the motor housing 21 vibrates, at least part of the structure of the shock-absorbing member 80 will contact the bracket assembly 10 to transmit the vibration, while other parts of the structure of the shock-absorbing member 80 will not contact the bracket assembly 10 to avoid further transmission of the vibration.

[0089] In the description of this specification, the descriptions with reference to the terms "certain embodiments", "in an example", "exemplarily", etc., mean that the specific features, structures, materials or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0090] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. An electric toothbrush, characterized in that: include: A bracket assembly, the bracket assembly comprising a receiving cavity; A motor, wherein the length direction of the electric toothbrush is a first direction, the motor comprises a motor housing, the motor housing is arranged in the accommodating cavity along any direction perpendicular to the first direction so that the bracket assembly clamps at least a part of the structure of the motor, and at least a part of the motor housing is a cylinder; and A limit assembly, wherein the limit assembly is disposed 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 of the motor relative to the bracket assembly and / or the rotation of the motor relative to the bracket assembly along the first direction as the axis.

2. The electric toothbrush according to claim 1, characterized in that: The limit assembly includes a limit assembly and a constraint assembly. Along the first direction, the motor housing includes a first end and a second end opposite to each other. The limit assembly is located on the side where the first end of the motor housing is located, and the constraint assembly is located on the side where the second end of the motor housing is located. The motor is non-rotatably matched with the bracket assembly through the limit assembly and / or the constraint assembly.

3. The electric toothbrush according to claim 1, 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 rotation of the motor housing relative to the bracket assembly and / or limit the movement of the motor housing relative to the bracket assembly.

4. The electric toothbrush according to claim 3, characterized in that: The motor housing includes an end housing and a surrounding housing connected to each other. Along the first direction, the surrounding housing includes a first end and a second end opposite to each other. The end housing cover is disposed at an opening of the first end of the surrounding housing. The first limiting member is disposed at the end housing.

5. The electric toothbrush according to claim 4, characterized in that: The first limiting member is a protrusion provided on the end surface of the end shell, and the second limiting member is a depression provided on the inner wall of the bracket assembly; or The first limiting member is a depression provided on the end surface of the end shell, and the second limiting member is a protrusion provided on the inner wall of the bracket assembly; or The first limiting member is a protrusion provided on the first end of the peripheral shell, and the second limiting member is a recess provided on the inner wall of the bracket assembly; or The first limiting member is a recess provided on the first end of the peripheral shell, and the second limiting member is a protrusion provided on the inner wall of the bracket assembly.

6. The electric toothbrush according to claim 4, characterized in that: The first limiting members are arranged on the end shell and include two of them, the second limiting members are arranged on the bracket assembly and include two of them, each of the second limiting members cooperates with one of the first limiting members; the two first limiting members are arranged in sequence along the second direction, and the second direction is perpendicular to the first direction.

7. The electric toothbrush according to claim 1, characterized in that: The motor shell includes an integrally formed surrounding shell and a positioning shell. Along the first direction, the surrounding shell includes a first end and a second end opposite to each other, and the positioning shell is located at the second end of the surrounding shell. The motor also includes a position detection component, which is fixed in the positioning shell.

8. The electric toothbrush according to claim 7, 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. The first constraint member and the second constraint member cooperate to constrain the rotation of the positioning shell relative to the bracket assembly and / or constrain the movement of the positioning shell relative to the bracket assembly.

9. The electric toothbrush according to claim 8, characterized in that: The first restraining member is a protrusion provided on the peripheral side wall of the positioning shell, and the second restraining member is a recess provided on the inner wall of the bracket assembly; or The first restraining member is a depression provided on the peripheral side wall of the positioning shell, and the second restraining member is a protrusion provided on the inner wall of the bracket assembly; or The first restraining member is a protrusion provided on the end surface of the positioning shell, and the second restraining member is a recess provided on the inner wall of the bracket assembly; or The first restraining member is a depression arranged on the end surface of the positioning shell, and the second restraining member is a protrusion arranged on the inner wall of the bracket assembly.

10. The electric toothbrush according to claim 1, characterized in that: The bracket assembly includes a bracket body and a cover body connected to each other, the bracket body and the cover body are arranged relative to each other along a third direction perpendicular to the first direction and jointly form the accommodating cavity, the bracket body and the cover body clamp at least a partial structure of the motor; the motor housing is connected to at least one of the bracket body and the cover body through the limiting assembly.

11. The electric toothbrush according to claim 10, characterized in that: At least one of the bracket body and the cover body is provided with a positioning groove, and the motor is clamped in the positioning groove to limit the movement of the motor relative to the bracket assembly and / or the rotation of the motor relative to the bracket assembly along the first direction as the axis.

12. The electric toothbrush according to claim 10, characterized in that: The bracket body is provided with a first positioning groove, and the cover body is provided with a second positioning groove; when the bracket body and the cover body are matched, the opening of the first positioning groove and the opening of the second positioning groove are arranged opposite to each other and jointly form the accommodating cavity, and the motor is clamped in the first positioning groove and the second positioning groove to limit the movement of the motor relative to the bracket assembly.

13. The electric toothbrush according to claim 10, characterized in that: The electric toothbrush also includes: The first fastener is used along the third direction, and the cover body is connected to the bracket body through the first fastener to fix the relative positions of the bracket body and the cover body.

14. The electric toothbrush according to claim 10, characterized in that: The bracket assembly also includes a first alignment member and a second alignment member, one of which is arranged on the bracket body, and the other is arranged on the cover body; the first alignment member and the second alignment member cooperate with each other to align and connect the bracket body with the cover body.

15. The electric toothbrush according to claim 10, characterized in that: The electric toothbrush further comprises a handle shell, wherein the bracket assembly and at least a part of the structure of the motor are arranged in the handle shell; a first guide rail is arranged on the outside of the bracket body, and a first guide groove corresponding to the first guide rail is arranged on the inner wall of the handle shell, wherein the first guide rail is used to cooperate with the first guide groove to fix the bracket assembly to the handle shell; and / or A second guide rail is disposed on the outside of the cover body, and a second guide groove corresponding to the second guide rail is disposed on the inner wall of the handle shell. The second guide rail is used to cooperate with the second guide groove to fix the bracket assembly to the handle shell.

16. The electric toothbrush according to claim 1, characterized in that The bracket assembly also includes: A second fastener is provided along the first direction, and the motor is connected to the bracket assembly through the second fastener to limit the movement of the motor relative to the bracket assembly and / or the rotation of the motor relative to the bracket assembly.

17. The electric toothbrush according to claim 16, characterized in that: Along the first direction, the bracket assembly includes a first end and a second end opposite to each other, the second fasteners include at least two, at least one of the second fasteners extends from the end surface of the first end of the bracket assembly into the bracket assembly to be connected to the motor, and at least two of the second fasteners are arranged in sequence along a fourth direction, and the fourth direction is perpendicular to the first direction and intersects with the third direction.

18. The electric toothbrush according to claim 16, characterized in that The electric toothbrush further comprises a circuit board, which is arranged on one side of the bracket assembly along a third direction. The electric toothbrush further comprises a first fastener, which is arranged on the other side of the bracket assembly and is indented on a side away from the circuit board.

19. The electric toothbrush according to claim 1, characterized in that: The electric toothbrush also includes: A shock absorbing member is arranged between the motor housing and the inner wall of the bracket assembly, and is used to buffer the vibration between the motor housing and the bracket assembly.

20. The electric toothbrush according to claim 19, characterized in that The shock absorbing component is a soft rubber component which is sleeved outside at least a part of the structure of the motor housing.

21. The electric toothbrush according to claim 19, characterized in that The diameter of the inner contour of the shock absorbing member is greater than the diameter of the outer contour of the motor housing; and / or The diameter of the outer contour of the shock absorbing member is smaller than the diameter of the inner contour of the accommodating cavity.

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