Electric toothbrush

Abstract

The application provides an electric toothbrush. The electric toothbrush comprises a handle, a core, a brush head and a support. The handle comprises a first shell and a second shell, which are arranged along a first direction. The first shell defines an open port on a side facing the second shell, and the second shell closes the open port. The first shell and the second shell jointly form a receiving cavity. The core comprises a motor and a battery. The motor comprises a motor body and a motor shaft. The motor body and the battery are installed in the receiving cavity through the open port, and the battery is used for providing electric energy for the motor. The handle further comprises a top portion and a bottom portion opposite to each other in the length direction of the handle. The top portion is provided with a motor shaft hole, and the motor shaft passes through the motor shaft hole. The brush head is detachably installed on the motor shaft. The support comprises a body portion and a limiting structure. The body portion is arranged on a side surface of the motor body close to the open port, and the limiting structure is connected with the body portion and is configured to at least limit and / or support the motor. The length of the support is less than the length of the core.

Description

Technical Field

[0001] This application relates to the field of oral care technology, specifically to an electric toothbrush. Background Technology

[0002] In related technologies, electric toothbrushes include a handle and a brush head. The handle also houses functional components such as a motor, battery, and circuit board. The bottom of the electric toothbrush has a base cover. After the motor, battery, circuit board, and other functional components are pushed into the handle housing from the bottom, the base cover is then installed on the bottom of the handle. To achieve the positioning and installation of these functional components, in addition to the outermost housing, the handle needs one or more brackets to fix these functional components and install them inside the electric toothbrush. During the manufacturing process of an electric toothbrush, the installation steps require first fixing all functional components to the brackets, and then inserting the bracket containing all the functional components into the housing. Therefore, the bracket needs to fix all functional components and needs to fit precisely inside the handle. The size of the bracket is only slightly smaller than the size of the handle, and the length of the bracket needs to be longer than the length of each functional component and to enclose the motor, resulting in high manufacturing costs for the bracket. Utility Model Content

[0003] This application provides an electric toothbrush.

[0004] The electric toothbrush according to this application includes a handle, a motor, a brush head, and a support. The handle includes a first shell and a second shell. The first shell and the second shell are arranged along a first direction, with the first shell defining an opening on the side facing the second shell, and the second shell closing the opening, forming a receiving cavity. The motor includes a motor and a battery. The motor includes a motor body and a motor shaft extending from the motor body. The motor body and the battery are mounted in the receiving cavity through the opening. The battery provides power to the motor. The handle also includes a top and a bottom facing away from each other along its length. The top has a motor shaft hole through which the motor shaft passes, and the first direction is perpendicular to the length direction of the handle. The brush head is detachably mounted to the motor shaft. The support includes a body portion and a limiting structure. The body portion is disposed on the outer shell surface of the motor body near the opening. The limiting structure is connected to the body portion and configured to at least limit and / or support the motor. Along the length direction of the handle, the length of the support is less than the length of the motor.

[0005] The electric toothbrush of this embodiment utilizes a body portion mounted on a bracket to circumferentially limit functional components such as a motor installed in an accommodating cavity through an open opening, and further limits / supports the motor using a limiting structure, thus achieving stable limitation of the motor without the need to first mount the functional components on a large support frame before installing them in the accommodating cavity. Simultaneously, in the length direction of the handle, since the motor and battery are installed through an open opening, the bracket does not need to enclose the motor, battery, or other components in the length direction of the handle, shortening the bracket length, optimizing the bracket structure, and saving bracket costs. Furthermore, in the second direction perpendicular to both the first direction and the length direction of the handle, the bracket does not need to enclose the motor, making the handle size smaller in the second direction, facilitating user handheld use, and also saving material costs.

[0006] In some embodiments, the limiting structure includes a motor limiting portion that extends from both sides of the main body toward the first housing and abuts against the outer shell of the motor body to limit the rotation of the motor body.

[0007] In this embodiment of the electric toothbrush, the bracket expands the contact area with the motor body through the motor limiting part, better fitting with the receiving cavity, and thus better enclosing the motor body to restrict its rotation, thereby improving the stability of the motor body installed in the handle. In some embodiments, the limiting structure further includes a separator extending towards the first shell along the first direction. The motor and the battery are located on opposite sides of the separator in the length direction of the handle. The separator restricts the movement of the motor in the length direction of the handle, and / or restricts the movement of the battery in the length direction of the handle.

[0008] The electric toothbrush of this embodiment restricts the movement of the motor and / or battery in the length direction of the handle by using the separator on the bracket. This enables stable installation of the motor and / or battery, improves the drop resistance of the motor and / or battery, and also prevents the vibration of the motor from being transmitted to the battery, affecting the battery's energy storage. It also prevents the heat on the battery from being directly transferred to the motor, affecting the motor's performance.

[0009] In some embodiments, the limiting structure includes a battery limiting part connected to the body part and / or the separator. In the length direction of the handle, the battery limiting part and the body part are respectively located on opposite sides of the separator. The battery limiting part is used to abut against the outer wall of the battery to limit the battery from becoming loose.

[0010] In the electric toothbrush of this embodiment, the battery limiting part of the bracket abuts against the outer wall of the battery. At this time, the battery limiting part can cooperate with the cavity, thereby restricting the loosening of the battery. Furthermore, the separator limits the movement of the battery in the length direction. Therefore, the movement of the battery in the length direction of the handle and the loosening around the axis parallel to the length direction of the handle can be restricted, improving the stability of the battery installed in the handle.

[0011] In some embodiments, the motor is electrically connected to the battery via a connector, and the battery limiting part is provided with a wiring port through which the connector passes.

[0012] The electric toothbrush of this embodiment has a cable routing port on the battery limiting part so that the electrical connector for connecting the motor and the battery can pass through. At this time, the motor and the battery can be electrically connected simply and stably through a shorter connection path, and the electrical connection stability of the electric toothbrush is good.

[0013] In some embodiments, a seal is provided between the inner wall of the motor shaft hole and the motor shaft, the seal being used to seal the gap between the inner wall of the motor shaft hole and the outer peripheral wall of the motor shaft.

[0014] In the electric toothbrush of this embodiment, the seal can seal the gap between the inner wall of the motor shaft hole and the outer peripheral wall of the motor shaft, preventing fluid from flowing into the receiving cavity from the gap and improving the waterproof rating of the electric toothbrush.

[0015] In some embodiments, the body portion is disposed on the housing surface of the motor body near the opening; the limiting structure includes a sealing element support portion, which is connected to the body portion on one side of the handle in the length direction, and the sealing element support portion is used to abut the sealing element against the inner wall of the motor shaft hole.

[0016] In the electric toothbrush of this embodiment, the hardness of the sealing support portion can provide support for the sealing element and increase the contact area with the sealing element, ensuring that the sealing element can still maintain its fit with the inner wall of the motor shaft hole when subjected to external force or motor vibration. This allows the sealing element to be tightly installed in the gap between the motor shaft hole and the motor shaft, preventing moisture from seeping into the receiving cavity from the motor shaft hole, protecting the internal components of the receiving cavity from damage, and extending the service life of the electric toothbrush.

[0017] In some embodiments, the handle includes a housing body, the first housing including a first support portion extending from the inner sidewall of the housing body toward the opening, and the limiting structure including a partition extending from the housing portion toward the first support portion. In the length direction of the handle, the first support portion cooperates with the partition portion to jointly limit the movement of the motor and / or the battery in the length direction of the handle.

[0018] The electric toothbrush of this embodiment includes a separator and a first support. During assembly, the motor and battery can be installed in the first housing first, and the first support is used to separate the motor and battery in the length direction of the handle. This facilitates installation and avoids interference between the two. Then, the bracket is set on the outer periphery of the motor, and the separator cooperates with the first support to further restrict the movement of the motor and / or battery in the length direction of the handle. This avoids the problem of poor limiting when the movement of the motor and / or battery in the length direction of the handle is restricted only by the separator. The structure of the electric toothbrush is more stable, and the length of the first support in the first direction can be reduced, which makes it easier to provide more space for motor installation and facilitates the alignment of the motor.

[0019] In some embodiments, the bracket is fixedly connected to the first support portion.

[0020] The electric toothbrush of this embodiment fixes the bracket to the first support part, which can provide a more stable fixing method to the bracket. For example, the bracket and the first support part can be screwed together by utilizing the height of the first support part. By stabilizing the installation of the bracket, the motor is limited by the stable bracket, thereby achieving a more stable installation of the motor.

[0021] In some embodiments, the first housing includes a second support extending from the inner sidewall of the housing body toward the opening, wherein the second support, together with the separator, restricts the movement of the battery in the length direction of the handle.

[0022] In the electric toothbrush of this embodiment, the battery is confined by the combined action of the second support and the separator, which prevents the battery from shifting along the length of the handle, thereby improving the drop resistance of the motor.

[0023] In some embodiments, the electric toothbrush further includes a circuit board, which is mounted in the receiving cavity through the opening and electrically connected to the motor to control the vibration of the motor, the circuit board being supported by the bracket.

[0024] The electric toothbrush of this embodiment increases the operating space for circuit board installation by installing the circuit board through an open opening, and accurately achieves the positioning and installation of the circuit board. At the same time, the bracket separates the motor and the circuit board, which can reduce the transmission of motor vibration to the circuit board, thus achieving stable and convenient installation of the circuit board.

[0025] In some embodiments, the circuit board is fixedly connected to the bracket and the second support portion, respectively.

[0026] In the electric toothbrush of this embodiment, the circuit board is supported and fixed at both ends of the handle along its length by the bracket and the second support, which further improves the stability of the circuit board installation.

[0027] In some embodiments, the first shell and the second shell are mounted along the first direction and connected front to back to form the receiving cavity.

[0028] In this embodiment of the electric toothbrush, in the first direction, the two housings of the handle can be installed and connected front to back to form a receiving cavity. The receiving cavity is used to install functional components of the electric toothbrush, such as the motor and battery. At this time, the installation direction of functional components such as the mechanism is the first direction, the area for installing functional components such as the mechanism is larger, and the installation process of the handle is simple.

[0029] In some embodiments, the first shell has an inner cavity, the second shell has an inner cavity, and the receiving cavity includes the inner cavity of the first shell and the inner cavity of the second shell; the movement is fixed in the inner cavity of the first shell, and the inner cavity depth of the first shell is greater than the inner cavity depth of the second shell.

[0030] In this embodiment of the electric toothbrush, the inner depth of the first housing is relatively large in the first direction, providing sufficient installation space for the motor, battery, etc. The larger inner depth of the first housing also better restricts the position of the motor, battery, etc. within the first housing, preventing displacement or loosening. The larger inner depth of the first housing also has a positioning effect, making it easier to install the motor. By positioning the motor shaft and the motor shaft hole, the fit between the motor and the motor shaft is improved, thereby enhancing the transmission effect of the motor shaft and the sealing and waterproof performance of the motor shaft hole. In addition, the fact that the inner depth of the first housing is greater than that of the second housing also has a foolproof effect, improving installation efficiency.

[0031] In some embodiments, the handle includes a housing body with an interactive area, and an interactive unit is disposed on and supported on the bracket, the interactive unit facing the interactive area.

[0032] In the electric toothbrush of this embodiment, one or more components such as indicator lights, display screen, and button units are supported by a bracket, which can achieve stable setting of the interactive units and thus cooperate with the interactive area to achieve better interactive effects and improve the user's interactive experience.

[0033] In some embodiments, the handle further includes a housing body and ribs extending from the inner wall of the housing body toward the opening, the ribs forming a first limiting portion. The first limiting portion abuts against the outer casing of the motor body and, together with the limiting structure of the bracket, restricts the rotation of the motor body.

[0034] In the electric toothbrush of this embodiment, the first limiting part and the limiting structure of the bracket cooperate to limit the accommodating area of ​​the motor, so as to improve the stability of the motor and facilitate the installation of the motor.

[0035] In some embodiments, the handle further includes a housing body and a rib extending from the inner sidewall of the housing body toward the opening, the rib forming a second limiting portion that abuts against the outer sidewall of the battery and, together with the limiting structure of the bracket, restricts the rotation of the battery.

[0036] In the electric toothbrush of this embodiment, the second limiting part and the limiting structure of the bracket cooperate to limit the battery accommodating area, thereby improving the stability of the battery and facilitating battery installation.

[0037] The above description is merely an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, specific embodiments of this application are given below. Attached Figure Description

[0038] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, wherein:

[0039] Figure 1 This is a three-dimensional assembly diagram of an electric toothbrush according to some embodiments of this application;

[0040] Figure 2 yes Figure 1 The diagram shown is a three-dimensional exploded view of an electric toothbrush.

[0041] Figure 3 yes Figure 1 The diagram shows a three-dimensional assembly of the handle in an electric toothbrush.

[0042] Figure 4 yes Figure 3 An exploded 3D view of the handle shown;

[0043] Figure 5 yes Figure 3 Another exploded perspective view of the handle shown;

[0044] Figure 6 yes Figure 3 The diagram shows a cross-sectional view of the handle cut by line VI-VI;

[0045] Figure 7 yes Figure 3 A schematic diagram of a portion of the support structure in an electric toothbrush;

[0046] Figure 8 This is a comparative schematic diagram of an electric toothbrush according to some embodiments of this application and an electric toothbrush of related technologies.

[0047] Explanation of key component symbols:

[0048] Electric toothbrush 100;

[0049] Handle 10; First shell 11; Opening 110; First support part 111; Second support part 112; First limiting part 113; Second limiting part 114; Second shell 12; Interaction area 123; Light-transmitting part 124; Button part 125; Receiving cavity 101; Top 13; Motor shaft hole 131; Bottom 14; Shell body 15;

[0050] 20; motor; 21; motor body; 211; motor shaft; 213; battery;

[0051] 30; 31; 32; 32; 321; 322; 323; 323; 3231; 324;

[0052] Circuit board 41; Interaction unit 431; Display unit 4311; Key unit 4313;

[0053] Seal 61;

[0054] Brush head 70; bristles 71; handle 73;

[0055] First direction X, handle length direction Y, second direction Z;

[0056] Area I of the functional components inside the handle; Area II of the support; Area III of the handle. Detailed Implementation

[0057] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the embodiments of this application, and should not be construed as limiting the embodiments of this application.

[0058] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation", "connection" and "linkage" should be interpreted broadly. In one example, they can be a fixed connection, a detachable connection, or an integral connection; they can be a mechanical connection, an electrical connection, or a connection that allows communication between them; they can be a direct connection or an indirect connection through an intermediate medium; they can be the internal connection of two elements or the interaction between two elements.

[0059] In related technologies, electric toothbrushes include a handle and a brush head. The handle also houses functional components such as a motor, battery, and circuit board. The bottom of the electric toothbrush has a bottom cover. After the motor, battery, circuit board, and other functional components are pushed into the handle housing from the bottom, the bottom cover is then installed on the bottom of the handle. To achieve the positioning and installation of these functional components, in addition to the outermost housing, the handle needs to have one or more brackets to fix these functional components and install them inside the electric toothbrush. During the production process of the electric toothbrush, the installation step requires first fixing all functional components to the brackets, and then installing the bracket containing all functional components into the housing. Therefore, the bracket needs to fix all functional components and needs to fit precisely inside the handle. The size of the bracket is only slightly smaller than the size of the handle, and the length of the bracket needs to be longer than the length of each functional component and to enclose the motor, resulting in high manufacturing costs for the bracket. To solve this problem, this application provides an electric toothbrush 100 (see [link to application]). Figure 1 and Figure 2 ).

[0060] Please see Figures 1 to 4 The electric toothbrush 100 according to this application includes a handle 10, a motor 20, a brush head 70, and a support 30. The handle 10 includes a first housing 11 and a second housing 12. The first housing 11 and the second housing 12 are arranged along a first direction X. The first housing 11 defines an opening 110 on the side facing the second housing 12, and the second housing 12 closes the opening 110. The first housing 11 and the second housing 12 together form a receiving cavity 101. The motor 20 includes a motor 21 and a battery 23. The motor 21 includes a motor body 211 and a motor shaft 213 extending from the motor body 211. The motor body 211 and the battery 23 are installed in the receiving cavity 101 through the opening 110. The battery 23 provides electrical power to the motor 21. The handle 10 also includes a top 13 and a bottom 14 opposite to each other in the longitudinal direction Y of the handle 10. The top 13 has a motor shaft hole 131 through which the motor shaft 213 passes, with the first direction X perpendicular to the length direction Y of the handle 10. The brush head 70 is detachably mounted to the motor shaft 213. The bracket 30 includes a body 31 and a limiting structure 32. The body 31 is disposed on the housing surface of the motor body 211 near the opening 110. The limiting structure 32 is connected to the body 31 and is configured to at least limit and / or support the motor 21. In the length direction Y of the handle 10, the length of the bracket 30 is less than the length of the mechanism 20.

[0061] Specifically, the electric toothbrush 100 can drive the brush head 70 to vibrate at a high frequency, thus the electric toothbrush 100 can clean the areas in the mouth that need cleaning through the high-frequency vibrating brush head 70. The areas in the mouth that need cleaning may include, but are not limited to, the tooth surfaces, interdental spaces, and gums. The brush head 70 and the handle 10 can be connected in a detachable manner, specifically, the brush head 70 is detachably mounted on the motor shaft 213 (described below) of the electric toothbrush 100. This allows for easy replacement of brush heads 70 of different models or materials; furthermore, it facilitates the replacement of the brush head 70 when its cleaning effect decreases due to prolonged use, thereby ensuring the cleaning effect of the electric toothbrush 100. The electric toothbrush 100 includes, but is not limited to, sonic toothbrushes, ultrasonic toothbrushes, plug-in electric toothbrushes 100, or battery-powered electric toothbrushes 100. In some embodiments, the brush head 70 includes bristles 71 and a handle 73. The bristles 71 are used for cleaning teeth. The bristles 71 can be made of, but are not limited to, nylon, rubber, or boar bristles. Preferably, the bristles 71 have good toughness and elasticity, thus enabling them to better clean the areas in the mouth that need cleaning. Referring further to the figures, one end of the handle 73 is detachably connected to the handle 10, and the other end is provided with bristles 71. The handle 73 is generally elongated, which facilitates its insertion into the mouth so that the bristles 71 can reach the areas in the mouth that need cleaning, thereby ensuring the cleaning effect of the electric toothbrush 100.

[0062] The handle 10 is a structure for a user to hold when using the electric toothbrush 100, enabling the user to operate and use the various functions of the electric toothbrush 100. The handle 10 may include an anti-slip structure to prevent it from slipping from the hand during use. The handle 10 can have a regular or irregular structure, and this application does not impose any limitations. For example, the handle 10 is generally cylindrical in shape to provide a comfortable grip for the user. Figure 1 and Figure 2 As shown.

[0063] The first shell 11 and the second shell 12 are structures for mounting the motor 20 and other components of the electric toothbrush 100. The materials of the first shell 11 and / or the second shell 12 can be metallic or non-metallic. Metallic materials include, but are not limited to, aluminum, iron, steel, or aluminum alloys, while non-metallic materials include, but are not limited to, plastics. The materials of the first shell 11 and the second shell 12 can be the same or different. In some embodiments, the first shell 11 and / or the second shell 12 can be made of metallic materials, thereby increasing the structural strength of the handle 10 and preventing damage to the handle 10 during operation, thus improving the stability and reliability of the electric toothbrush 100. In other embodiments, the first shell 11 and / or the second shell 12 can be made of non-metallic materials, thereby making the handle 10 lighter and facilitating the portability of the electric toothbrush 100.

[0064] This application defines the direction perpendicular to the length direction Y (hereinafter referred to as the length direction Y) of the handle 10 as the first direction X. A first shell 11 and a second shell 12 are arranged along the first direction X. On the side of the first shell 11 facing the second shell 12, the first shell 11 has an opening 110, which fully exposes the space inside the first shell 11. The shape of the opening 110 is determined by the peripheral shape of the side of the first shell 11 facing the second shell 12. The peripheral shape can be, but is not limited to, a flush peripheral with the same height in the first direction X, an inclined peripheral with different heights in the first direction X, or an irregularly shaped peripheral with different heights in the first direction X. The second shell 12 can connect with the first shell 11 and close the opening 110, thereby enclosing the structure of the handle 10 and surrounding the receiving cavity 101. The receiving cavity 101 is a spatial structure for accommodating the mechanism 20 and other components of the electric toothbrush 100. It is understood that the peripheral shape of the side of the second shell 12 facing the first shell 11 must match the peripheral shape of the side of the first shell 11 facing the second shell 12 to form a complete handle 10. The first shell 11 and the second shell 12 can be joined together by a detachable or non-detachable connection method. Detachable connection methods include, but are not limited to, snap-fit ​​connections or threaded connections; non-detachable connection methods include, but are not limited to, bonding or welding. This definition will be used for subsequent detachable and non-detachable connections and will not be elaborated further.

[0065] The mechanism 20 includes a motor 21, which includes a motor body 211 and a motor shaft 213 extending from the motor body 211. The motor shaft 213 of the motor 21 is used to connect to the brush head 70. When the user starts the electric toothbrush 100, the motor shaft 213 of the motor 21 in the mechanism 20 vibrates, and drives the brush head 70 to vibrate through the part connected to the brush head 70, so as to clean the areas to be cleaned in the oral cavity (such as teeth) through the bristles 71 on the vibrating brush head 70. The opening 110 provides operating space for the process of installing the motor body 211 into the first housing 11, so the motor body 211 can be installed in the first housing 11 through the opening 110 to achieve a stable installation of the motor body 211 and the first housing 11. In the length direction Y, the handle 10 also includes a top 13 and a bottom 14 facing away from each other, with the top 13 being closer to the brush head 70 than the bottom 14. The top 13 is provided with a motor shaft hole 131 so that the motor shaft 213 can pass through the motor shaft hole 131 from the top 13 to the outside of the handle 10.

[0066] Battery 23 is used to power the electric toothbrush 100. After the user starts the electric toothbrush 100, battery 23 powers motor 21, and the control unit in motor 21 controls the motor shaft 213 to start vibrating. Specifically, battery 23 can be a single battery cell or a battery pack composed of multiple battery cells. The battery cells can be, but are not limited to, lithium-ion batteries, nickel-metal hydride batteries, and solar cells. The opening 110 provides operating space for the process of installing battery 23 into the first housing 11, so battery 23 can be installed in the first housing 11 through the opening 110 to achieve a stable installation of battery 23 and the first housing 11.

[0067] The bracket 30 is a structure used to support and mount functional components such as the motor 21. The bracket 30 is positioned on the outer periphery of the motor 21. The body portion 31 is the part of the bracket 30 that contacts the motor body 211 and is disposed on the side of the outer shell of the motor body 211 near the opening 110. In this case, the outer shell of the motor body 211 can support the bracket 30. The body portion 31 ensures full contact between the bracket 30 and the motor body 211, allowing the bracket 30 to be better fixed to the outer shell of the motor body 211. The limiting structure 32 is a structure of the bracket 30 used to limit components such as the motor 21 in the handle 10. The limiting structure 32 is used at least to limit and / or support the motor 21. In some embodiments, the limiting structure 32 can also limit and / or support the battery 23 or other components. The limiting structure 32 is disposed on the body portion 31 and extends from the body portion 31. At least another portion of the periphery of the outer casing of the motor body 211 abuts against the limiting structure 32 to limit and / or support the motor 21 with the bracket 30.

[0068] The bracket 30 can cooperate with the first housing 11 to improve the stability of the installation of the mechanism 20, namely the motor 21 and the battery 23, in the handle 10. In order to reduce the overall size of the electric toothbrush 100, the length of the bracket 30 in the longitudinal direction Y is less than the length of the mechanism 20. At this time, the bracket 30 can not only play a limiting role, but also has the advantage of smaller overall size, saving material costs in the production process of the electric toothbrush 100.

[0069] The assembly steps of the electric toothbrush 100 can be as follows: First, place the battery 23 and the motor 21 on the first housing 11; then, place the bracket 30 on the first housing 11; finally, connect the first housing 11 and the second housing 12 to complete the assembly of the electric toothbrush 100. It should be noted that the assembly steps of the electric toothbrush 100 in the above embodiment are merely illustrative, and the assembly steps of the electric toothbrush 100 can also take other forms, which will not be illustrated here.

[0070] In related technologies, components such as the motor and battery need to be first fixed to a support frame. The overall structure formed by the motor, battery, and support frame needs to be installed inside the handle from the bottom. When using a support frame for auxiliary installation, the support frame is relatively large, and the handle also needs to be relatively large to accommodate the overall structure formed by the motor, battery, and support frame. Therefore, this installation method results in a larger overall size of the electric toothbrush. Figure 8 As shown in Figure (2), the cross-section of the electric toothbrush at this time includes area I of the functional components inside the handle, area II of the support frame, and area III of the handle. At the same time, due to the use of the support frame and the increase in the overall size of the electric toothbrush, the material cost will increase during the production of the electric toothbrush.

[0071] In comparison, the electric toothbrush 100 of this application uses the bracket 30 to limit the movement of functional components such as the motor 21 and / or battery 23, allowing the motor 21, battery 23, and the smaller bracket 30 to be directly installed into the handle 10, without first installing all functional components onto a larger support frame and then into the handle 10. This type of electric toothbrush 100 has only one layer of wall thickness in the width direction (first direction X), such as... Figure 8 As shown in (1), at this time, the cross-section of the electric toothbrush 100 only includes the area I of the functional device inside the handle 10 and the area III of the handle 10.

[0072] The electric toothbrush 100 of this embodiment utilizes a body portion 31 mounted on a bracket 30 to circumferentially limit functional components such as a motor 21 installed in a receiving cavity 101 from an open opening 110, and uses a limiting structure 32 to further limit / support the motor 21, thus achieving stable limitation of the motor 21 without having to first mount the functional components on a larger support frame before installing them in the receiving cavity 101. At the same time, in the length direction Y of the handle 10, since the motor 21 and battery 23 are installed from the open opening 110, the bracket 30 does not need to wrap the motor 21, battery 23, and other components 20 in the length direction Y of the handle 10, shortening the length of the bracket 30, optimizing the structure of the bracket 30, and saving the cost of the bracket 30. Furthermore, in the second direction Z, which is perpendicular to the first direction X and the length direction Y of the handle 10, the bracket 30 does not need to wrap the motor 21, making the size of the handle 10 in the second direction Z smaller, making it easier for the user to hold and use, and also saving material costs.

[0073] Please see Figure 4 and Figure 7 In some embodiments, the limiting structure 32 includes a motor limiting part 322, which extends from both sides of the main body 31 toward the first shell 11 and abuts against the outer shell of the motor body 211 to limit the rotation of the motor body 211.

[0074] Specifically, in the above embodiment, the direction perpendicular to both the first direction X and the length direction Y is defined as the second direction Z. The motor limiting part 322 is provided on the body part 31 of the support frame and extends from opposite sides of the body part 31 in the second direction Z towards the side away from the support surface. At this time, at least a portion of the periphery of the outer casing of the motor body 211 abuts against the body part 31, and at least another portion of the periphery of the outer casing of the motor body 211 abuts against the motor limiting part 322. At this time, the contact area between the bracket 30 and the outer casing of the motor body 211 increases, and the bracket 30 divides the accommodating cavity 101 into a separate space for accommodating the motor body 211. At this time, the motor limiting part 322 can better restrict the rotation of the motor body 211 about an axis parallel to the length direction Y.

[0075] In the electric toothbrush 100 of this embodiment, the bracket 30 expands the contact area with the motor body 211 through the motor limiting part 322, better cooperates with the receiving cavity 101, and further better wraps the motor body 211 to restrict the rotation of the motor body 211, thereby improving the stability of the motor body 211 installed in the handle 10.

[0076] Please see Figure 4 and Figure 7In some embodiments, the limiting structure 32 further includes a separator 321 extending toward the first housing 11 along the first direction X. On the length direction Y of the handle 10, a motor 21 and a battery 23 are provided on opposite sides of the separator 321. The separator 321 restricts the movement of the motor 21 in the length direction Y of the handle 10, and / or, the separator 321 restricts the movement of the battery 23 in the length direction Y of the handle 10.

[0077] Specifically, the partition 321 is a structure on the bracket 30 used to restrict the movement of the motor 21 in the length direction Y. In some embodiments, the partition 321 can also be used to restrict the movement of the motor 21 in the length direction Y. The partition 321 extends from the bracket 30 in the direction of the first direction X toward the first housing 11. The partition 321 and the bracket 30 can be integrally formed or separately formed. Wherein, when the partition 321 and the bracket 30 are separately formed, the partition 321 and the bracket 30 can be connected together by a detachable connection or a non-detachable connection.

[0078] The battery 23 and the motor 21 are respectively disposed on opposite sides of the separator 321. In some embodiments, the separator 321 abuts against the motor body 211, thereby restricting the movement of the motor body 211 in the length direction Y. In some embodiments, the separator 321 abuts against the battery 23, thereby restricting the movement of the battery 23 in the length direction Y. In other embodiments, the separator 321 abuts against both the motor body 211 and the battery 23, thereby restricting the movement of both the motor body 211 and the battery 23 in the length direction Y. In summary, the separator 321 can effectively restrict the movement of the motor body 211 and / or the battery 23 in the length direction Y, resulting in better structural stability of the electric toothbrush 100 and improved drop resistance of the motor 21 and / or battery 23. Meanwhile, since the separator 321 separates the motor 21 from the battery 23, the vibration of the motor 21 will not be transmitted to the battery 23, and the heat of the battery 23 will not be transmitted to the motor 21. The motor 21 and the battery 23 can work normally without affecting each other, and the electric toothbrush 100 can work normally.

[0079] In this embodiment, the electric toothbrush 100 restricts the movement of the motor 21 and / or battery 23 in the length direction Y of the handle 10 by means of the separator 321 on the bracket 30. This can achieve stable installation of the motor 21 and / or battery 23, improve the drop resistance of the motor 21 and / or battery 23, and also prevent the vibration of the motor 21 from being transmitted to the battery 23, which would affect the energy storage of the battery 23. It can also prevent the heat on the battery 23 from being directly transferred to the motor 21, which would affect the performance of the motor 21.

[0080] Please seeFigure 4 , Figure 5 and Figure 7 In some embodiments, the limiting structure 32 includes a battery limiting part 323, which is connected to the body part 31 and / or the separator 321. In the length direction Y of the handle 10, the battery limiting part 323 and the body part 31 are located on opposite sides of the separator 321, respectively. The battery limiting part 323 is used to abut against the outer wall of the battery 23 to restrict the battery 23 from loosening.

[0081] Specifically, in the above embodiments, the battery limiting portion 323 is a structure that extends from the bracket 30 toward the bottom 14 along the length direction Y. In the length direction Y, the separator 321 includes opposite sides. At this time, the battery 23 and the motor body 211 are located on opposite sides of the separator 321 and both abut against the separator 321. The battery limiting portion 323 is located on the side of the separator 321 opposite to the battery 23. In some embodiments, the battery limiting portion 323 is a structure extending from the body portion 31. In other embodiments, the battery limiting portion 323 is a structure extending from the separator 321. In the above embodiments, the battery limiting portion 323 and the body portion 31 are both located on opposite sides of the separator 321.

[0082] At this time, at least a portion of the end side of the outer wall of the battery 23 abuts against the separator 321, and at least another portion of the periphery of the outer wall of the battery 23 abuts against the battery retaining portion 323. Simultaneously, the first shell 11 and the battery retaining portion 323 cooperate to jointly restrict the loosening of the battery 23 about an axis parallel to the length direction Y. At this time, the movement of the battery 23 in the length direction Y of the handle 10 and the loosening about an axis parallel to the length direction Y of the handle 10 can both be restricted, resulting in good installation stability of the battery 23 in the handle 10.

[0083] In the electric toothbrush 100 of this embodiment, the battery limiting part 323 of the bracket 30 abuts against the outer wall of the battery 23. At this time, the battery limiting part 323 can cooperate with the cavity 101, thereby restricting the loosening of the battery 23. Furthermore, the separator 321 limits the movement of the battery 23 in the length direction Y. Therefore, the movement of the battery 23 in the length direction Y of the handle 10 and the loosening around the axis parallel to the length direction Y of the handle 10 can be restricted, thereby improving the stability of the battery 23 installed in the handle 10.

[0084] Please see Figure 4 and Figure 7In some embodiments, the motor 21 is electrically connected to the battery 23 via a connector. The battery limiting part 323 is provided with a wiring opening 3231 through which the connector passes. Specifically, the connector (not shown) is used to realize the electrical connection between the battery 23 and the motor 21. The connector includes, but is not limited to, wires, flexible circuit boards, and metal sheets. The wiring opening 3231 is an opening for the connector to pass through. The position of the wiring opening 3231 corresponds to the position of the connector, so that the connector can easily and stably connect the battery 23 to the motor 21.

[0085] The electric toothbrush 100 of this embodiment has a cable routing port 3231 on the battery limiting part 323 so that the connector for connecting the motor 21 and the battery 23 can pass through. At this time, the motor 21 and the battery 23 can be electrically connected simply and stably through a shorter connection path, and the electric toothbrush 100 has good electrical connection stability.

[0086] Please see Figures 3 to 6 In some embodiments, a sealing element 61 is provided between the inner wall of the motor shaft hole 131 and the motor shaft 213. The sealing element 61 is used to seal the gap between the inner wall of the motor shaft hole 131 and the outer peripheral wall of the motor shaft 213.

[0087] Specifically, the seal 61 is used to seal the gap between the inner wall of the motor shaft hole 131 and the outer peripheral wall of the motor shaft 213, thereby enhancing the waterproof effect of the electric toothbrush 100. The seal 61 can be made of materials such as rubber, silicone, plastic, or synthetic fibers. Rubber materials include, but are not limited to, natural rubber, nitrile rubber, fluororubber, polyurethane rubber, EPDM rubber, or silicone rubber. There can be one or more seals 61, which is not limited in this application. In one example, the seal 61 is individually molded and fitted onto the outer peripheral wall of the motor shaft 213; in another example, the seal 61 is fitted onto and molded onto the outer peripheral wall of the motor shaft 213 in the form of overmolding or similar materials. The seal 61 can seal the gap between the inner wall of the motor shaft hole 131 and the outer peripheral wall of the motor shaft 213, preventing fluid from flowing into the receiving cavity 101 from the gap, thus improving the waterproof rating of the electric toothbrush 100. Furthermore, the seal 61 is low in cost and does not occupy additional installation space. With a tighter positioning fit between the motor shaft 213 and the motor shaft hole 131, the seal 61 can be more stably clamped between the motor shaft 213 and the motor shaft hole 131, thus improving the waterproof performance of the electric toothbrush 100.

[0088] In the electric toothbrush 100 of this embodiment, the seal 61 can seal the gap between the inner wall of the motor shaft hole 131 and the outer peripheral wall of the motor shaft 213, preventing fluid from flowing into the receiving cavity 101 from the gap and improving the waterproof rating of the electric toothbrush 100.

[0089] Please see Figures 4 to 6In some embodiments, the main body 31 is disposed on the housing surface of the motor body 211 near the opening 110; the limiting structure 32 includes a sealing support 324, which is connected to the main body 31 on one side in the length direction Y of the handle 10, and the sealing support 324 is used to abut the sealing 61 against the inner wall of the motor shaft hole 131.

[0090] Specifically, the bracket 30 is connected to the first housing 11 and / or the second housing 12 of the handle 10 so that the components mounted thereon can be fixedly installed in the handle 10. Since there is a certain distance between the motor body 211 and the top 13, the motor shaft 213 needs to extend from the motor shaft hole 131. The seal support 324 is connected to the body 31 on one side of the length direction Y, and to the seal 61 on the other side of the length direction Y, and is used to abut the seal 61 against the inner wall of the motor shaft hole 131. The seal support 324 is detachably connected to other parts of the bracket 30 to facilitate the connection process between the seal support 324 and the body 31.

[0091] The sealing support portion 324 extends through the motor shaft 213 along its length Y and surrounds the outer peripheral wall of the motor shaft 213, thus limiting the movement of the motor shaft 213 and ensuring its stability during operation, reducing vibration and shaking. The portion of the sealing support portion 324 near the motor body 211 is larger than the portion away from the motor body 211. The sealing element 61 is fitted onto the outer peripheral wall of the sealing support portion 324 and its shape is matched. The larger size of the portion of the sealing element 61 near the motor body 211 facilitates assembly and ensures that the sealing element 61 will not shift or loosen, further enhancing the sealing performance.

[0092] The sealing support 324 is typically made of a harder material, while the seal 61 is made of a softer material. The hardness of the sealing support 324 provides support for the seal 61, ensuring that the seal 61 remains in contact with the inner wall of the motor shaft hole 131 even under external force or vibration. The seal 61 seals the gap between the motor shaft hole 131 and the motor shaft 213, preventing moisture from seeping into the receiving cavity 101 from the motor shaft hole 131, protecting internal components from damage, and extending the service life of the electric toothbrush 100.

[0093] In the electric toothbrush 100 of this embodiment, the hardness of the sealing support portion 324 can provide support for the sealing member 61 and increase the contact area with the sealing member 61, ensuring that the sealing member 61 can still maintain its fit with the inner wall of the motor shaft hole 131 when subjected to external force or vibration of the motor 21. This allows the sealing member 61 to be tightly installed in the gap between the motor shaft hole 131 and the motor shaft 213, preventing moisture from seeping into the receiving cavity 101 from the motor shaft hole 131, protecting the internal components of the receiving cavity 101 from damage, and extending the service life of the electric toothbrush 100.

[0094] Please see Figures 4 to 6 In some embodiments, the handle 10 includes a housing body 15, a first housing 11 including a first support portion 111 extending from the inner sidewall of the housing body 15 toward the opening 110, and a limiting structure 32 including a partition 321 extending from the body portion 31 toward the first support portion 111. In the length direction Y of the handle 10, the first support portion 111 and the partition 321 cooperate to jointly limit the movement of the motor 21 and / or the battery 23 in the length direction Y of the handle 10.

[0095] Specifically, in another classification, the handle 10 includes a housing body 15. The housing body 15 is the structure of the handle 10 for mounting the movement 20 and other components of the electric toothbrush 100. A first support portion 111 extends from the inner wall of the housing body 15 of the first housing 11 towards the opening 110. The first support portion 111 is a structure for restricting the position of at least some of the functional components in the electric toothbrush 100. The housing body 15 and the first support portion 111 can be integrally formed or separately formed. Wherein, when the housing body 15 and the first support portion 111 are separately formed, the housing body 15 and the first support portion 111 can be joined together by a detachable connection or a non-detachable connection.

[0096] The assembly steps of the electric toothbrush 100 are as follows: First, place the battery 23 and motor 21 on the first housing 11 and install them on opposite sides of the first support 111, respectively; then, place the bracket 30 on the first housing 11, whereby the bracket 30 is positioned around the outer periphery of the motor 21 and engages with the first support 111; finally, connect the first housing 11 and the second housing 12 to complete the assembly of the electric toothbrush 100. This makes the assembly of the handle 10 more convenient, and the first support 111 can provide a reference position for the installation of the motor 21, battery 23, and bracket 30.

[0097] In the longitudinal direction Y, the first support portion 111 includes two opposing sides. In the first direction X, the separator 321 and the first support portion 111 are positioned opposite each other. Therefore, when the first housing 11 and the second housing 12 are connected along the first direction X, the separator 321 and the first support portion 111 can cooperate to better restrict the battery 23 and / or the motor 21. In some embodiments, both the separator 321 and the first support portion 111 abut against the motor body 211, in which case the separator 321 and the first support portion 111 jointly restrict the movement of the motor body 211 in the longitudinal direction Y. In some embodiments, both the separator 321 and the first support portion 111 abut against the battery 23, in which case the separator 321 and the first support portion 111 jointly restrict the movement of the battery 23 in the longitudinal direction Y. In other embodiments, both the separator 321 and the first support 111 abut against the motor body 211 and the battery 23, and the separator 321 and the first support 111 together restrict the movement of the motor body 211 and the battery 23 in the length direction Y. In this case, the separator 321 can cooperate with the first support 111 to simultaneously restrict the movement of the motor body 211 and / or the battery 23 in the length direction Y, resulting in better structural stability of the electric toothbrush 100.

[0098] In some practical embodiments, the length of the first support portion 111 in the first direction X is relatively small. Specifically, in the first direction X, the first support portion 111 does not extend beyond the opening 110 and does not extend beyond the motor shaft 213. The first support portion 111 does not extend beyond the opening 110, meaning it does not protrude from the first housing 11. The motor shaft hole 131 is located at a position corresponding to the top 13 of the first housing 11. In this case, during the installation of the motor 21 into the first housing 11, the installation process of the motor 21 is not restricted by the first support portion 111, and the positioning and fitting process between the motor shaft 213 and the motor shaft hole 131 is relatively easy. In this case, the size of the first housing 11 does not need to be set too large to accommodate the installation of the motor 21 into the first housing 11. After the motor 21 is stably installed, the first support portion 111 is relatively close to the end of the motor 21, thus the first support portion 111 can effectively provide support for the motor 21.

[0099] With the first support portion 111 not exceeding the motor shaft 213, the space between the first support portion 111 and the top 13 is relatively large. The motor shaft 213 can be inserted into the motor shaft hole 131 in an installation direction parallel to or at a certain angle to the length direction Y to achieve a fit with the first housing 11. Therefore, the first support portion 111 will not affect the process of inserting the motor shaft 213 into the motor shaft hole 131. The positioning fit between the motor shaft 213 and the motor shaft hole 131 is tighter, which is beneficial for the alignment and installation of the motor 21.

[0100] The electric toothbrush 100 of this embodiment includes a separator 321 and a first support 111. During assembly, the motor 21 and battery 23 can be installed in the first housing 11 firstly, and the first support 111 can be used to separate the motor 21 and battery 23 in the length direction Y of the handle 10. This facilitates installation and avoids interference between the two. Then, the bracket 30 is set on the outer periphery of the motor 21, and the separator 321 cooperates with the first support 111 to further restrict the movement of the motor 21 and / or battery 23 in the length direction Y of the handle 10. This avoids the problem of poor positioning that exists when the separator 321 alone restricts the movement of the motor 21 and / or battery 23 in the length direction Y of the handle 10. The structure of the electric toothbrush 100 is more stable, and the length of the first support 111 in the first direction X can be reduced, which makes it easier to provide more space for the installation of the motor 21 and facilitates the alignment and installation of the motor 21.

[0101] Please see Figures 4 to 6 In some embodiments, the bracket 30 is fixedly connected to the first support portion 111. Specifically, when the bracket 30 is fixedly connected to the first support portion 111, the connection between the bracket 30 and the first support portion 111 can be either detachable or non-detachable. In this case, the bracket 30 can be more stably fixed in the handle 10, resulting in better structural stability and greater structural strength for the handle 10. Therefore, the bracket 30 can better constrain the motor 21, making the installation of the motor 21 in the handle 10 more stable.

[0102] The electric toothbrush 100 of this embodiment fixes the bracket 30 to the first support part 111, which can provide a more stable fixing method to the bracket 30. For example, the bracket 30 and the first support part 111 can be screwed together by utilizing the height of the first support part 111. By stabilizing the installation of the bracket 30, the motor 21 is limited by the stable bracket 30, thereby achieving a more stable installation of the motor 21.

[0103] Please see Figures 4 to 6 In some embodiments, the first housing 11 includes a second support portion 112 extending from the inner sidewall of the housing body 15 toward the opening 110. In the length direction Y of the handle 10, the second support portion 112 and the separator 321 together restrict the movement of the battery 23 in the length direction Y of the handle 10.

[0104] Specifically, the second support portion 112 is a structure used to further restrict the position of the battery 23 in the length direction Y. The second support portion 112 extends from the inner wall of the shell body 15 of the first shell 11 towards the opening 110. The shell body 15 and the second support portion 112 can be integrally formed or separately formed. Wherein, when the shell body 15 and the second support portion 112 are separately formed, the shell body 15 and the second support portion 112 can be connected together by a detachable connection method or a non-detachable connection method.

[0105] In the length direction Y, the distance between the top 13 and the separator 321 and the first support 111 corresponds to the dimension of the motor body 211 in the length direction Y. Therefore, the top 13, the separator 321, and the first support 111 together restrict the movement of the motor 21 in the length direction Y. Furthermore, in the length direction Y of the handle 10, the first support 111 and the second support 112 are arranged alternately. Therefore, the distance between the separator 321 and the first support 111 and the second support 112 corresponds to the dimension of the battery 23 in the length direction Y. In this case, the separator 321 and the first support 111 and the second support 112 together restrict the movement of the battery 23 in the length direction Y of the handle 10. In summary, the movement of the mechanism 20 in the length direction Y of the handle 10 is restricted, resulting in good installation stability and drop resistance of the mechanism 20.

[0106] In the electric toothbrush 100 of this embodiment, the battery 23 is jointly constrained by the second support 112 and the separator 321, which can prevent the battery 23 from shifting in the length direction Y of the handle 10, thereby improving the drop resistance of the motor 20.

[0107] Please see Figures 4 to 6 In some embodiments, the electric toothbrush 100 further includes a circuit board 41, which is installed in the accommodating cavity 101 through an opening 110 and is electrically connected to the motor 21 to control the vibration of the motor 21. The circuit board 41 is supported on the bracket 30.

[0108] Specifically, circuit board 41 is a structure used to control the operation of functional components such as motor 21. After the user starts the electric toothbrush 100, battery 23 supplies power to motor 21 and circuit board 41. Circuit board 41 can control the motor body 211 to start, so that the motor shaft 213 of motor body 211 begins to vibrate. Circuit board 41 can also control at least some components in interaction unit 431 to start, so as to realize other functions of electric toothbrush 100, such as display function. When bracket 30 is installed in first housing 11 through opening 110, opening 110 continues to provide operating space for installation of circuit board 41 in first housing 11. At this time, circuit board 41 can be installed in receiving cavity 101 through opening 110, and bracket 30 provides support for circuit board 41 in the first direction X. The connection between circuit board 41 and bracket 30 can be detachable or non-detachable. At the same time, since circuit board 41 and motor 21 are located on opposite sides of bracket 30, the vibration of motor 21 will not affect circuit board 41, and the installation stability of circuit board 41 is good.

[0109] In this embodiment, the electric toothbrush 100 uses an open opening 110 to install the circuit board 41, increasing the operating space for the installation of the circuit board 41 and enabling precise positioning and installation of the circuit board 41. At the same time, the bracket 30 separates the motor 21 and the circuit board 41, which reduces the transmission of vibration from the motor 21 to the circuit board 41, thus achieving stable and convenient installation of the circuit board 41.

[0110] Please see Figures 4 to 6 In some embodiments, the circuit board 41 is fixedly connected to the bracket 30 and the second support portion 112, respectively.

[0111] Specifically, the connection between the second support portion 112 and the circuit board 41 enables the second support portion 112 to provide support for the circuit board 41 in the first direction X. The connection between the circuit board 41 and the second support portion 112 can be either detachable or non-detachable. Furthermore, since the second support portion 112 and the bracket 30 are spaced apart in the first direction X, both ends of the circuit board 41 in the length direction Y of the handle 10 are supported by the bracket 30 and the second support portion 112 respectively, resulting in good installation stability of the circuit board 41.

[0112] In the electric toothbrush 100 of this embodiment, the circuit board 41 is supported and fixed at both ends of the bracket 30 and the second support part 112 in the length direction Y of the handle 10, which further improves the stability of the circuit board 41 installation.

[0113] Please see Figures 3 to 6In some embodiments, the first shell 11 and the second shell 12 are installed along the first direction X and connected front to back to form a receiving cavity 101. Specifically, after the first shell 11 and the second shell 12 are connected, a closed spatial structure is formed, which is the receiving cavity 101. At this time, the receiving cavity 101 can accommodate functional components such as the motor 20 in the electric toothbrush 100. When the first shell 11 is not connected to the second shell 12, the installation direction of the functional components such as the motor 20 into the first shell 11 is the first direction X. At this time, the open opening 110 of the first shell 11 provides a large installation area for the functional components such as the motor 20, and the handle 10 can be assembled easily and quickly.

[0114] In the electric toothbrush 100 of this embodiment, in the first direction X, the two housings of the handle 10 can be installed and connected front to back to form a receiving cavity 101. The receiving cavity 101 is used to install functional components in the electric toothbrush 100, such as the motor 21 and the battery 23. At this time, the installation direction of functional components such as the mechanism 20 is the first direction X, the area for installing functional components such as the mechanism 20 is larger, and the installation process of the handle 10 is simple.

[0115] Please see Figures 3 to 6 In some embodiments, the first shell 11 has an inner cavity, the second shell 12 has an inner cavity, and the accommodating cavity 101 includes the inner cavity of the first shell 11 and the inner cavity of the second shell 12; the movement 20 is fixed in the inner cavity of the first shell 11, and the inner cavity depth of the first shell 11 is greater than the inner cavity depth of the second shell 12.

[0116] Specifically, the internal space of the first shell 11 is its inner cavity, and the internal space of the second shell 12 is its inner cavity. When the first shell 11 and the second shell 12 are installed along the first direction X and connected front to back, the inner cavities of the first shell 11 and the second shell 12 communicate and together form the receiving cavity 101. The inner cavity depth of the second shell 12 and the inner cavity depth of the first shell 11 are both dimensions in the first direction X. At this time, the first shell 11 can provide sufficient space for the movement 20, ensuring that the movement 20 can be accommodated in the first shell 11, and reserving sufficient installation space for the first limiting part 113 and the second limiting part 114. This can better restrict the position of the movement 20 and other components within the first shell 11, prevent displacement or loosening, and provide a positioning effect for the movement 20, facilitating the installation of the movement 20 and other components.

[0117] Furthermore, when the inner cavity depth of the first shell 11 is greater than that of the second shell 12, there is a clear difference in appearance and size between the second shell 12 and the first shell 11. This makes it easy to distinguish between the first shell 11 and the second shell 12 during the installation of the handle 10, thereby preventing mistake-proofing and improving installation efficiency.

[0118] In the electric toothbrush 100 of this embodiment, the inner depth of the first shell 11 is relatively large in the first direction X, providing sufficient installation space for the motor 21, battery 23, etc. The larger inner depth of the first shell 11 also better restricts the position of the motor 21, battery 23, etc. within the first shell 11, preventing displacement or loosening. The larger inner depth of the first shell 11 also has a positioning effect, making it easier to install the motor 21. It is positioned by the motor shaft 213 and the motor shaft hole 131, improving the cooperation effect between the motor 21 and the motor shaft 213, thereby improving the transmission effect of the motor shaft 213 and the sealing and waterproof performance of the motor shaft hole 131. In addition, the inner depth of the first shell 11 is greater than the inner depth of the second shell 12, which also has a foolproof effect and improves installation efficiency.

[0119] Please see Figures 2 to 5 In some embodiments, the handle 10 includes a housing body 15, on which an interaction area 123 is provided, and an interaction unit 431 is provided and supported on the bracket 30, with the interaction unit 431 facing the interaction area 123.

[0120] Specifically, the interaction area 123 is a visible and / or operable area within the housing 15 provided for user interaction with the electric toothbrush 100. User interaction with the electric toothbrush 100 includes, but is not limited to, turning on the electric toothbrush 100, turning it off, changing its operating mode, and obtaining information from it. The interaction unit 431 is a component that enables user interaction with the electric toothbrush 100. The interaction unit 431 includes, but is not limited to, a display unit 4311 and a button unit 4313. The display unit 4311 includes a display screen and / or indicator lights.

[0121] Specifically, the display screen is a structure in the electric toothbrush 100 used to display information, including but not limited to cleaning time, cleaning mode, and cleaning area. The indicator light is a structure in the electric toothbrush 100 used to emit prompt signals. The indicator light can use different lighting patterns to indicate that the electric toothbrush 100 is in different working modes, conveying at least some of the working status information of the electric toothbrush 100 to the user. The button unit 4313 is a structure in the electric toothbrush 100 used to output commands. The user can control the working mode of the electric toothbrush 100, such as turning the electric toothbrush 100 on or off, and changing the cleaning mode, by pressing the button unit 4313 differently.

[0122] The interaction unit 431 is mounted on the bracket 30, and the interaction area 123 is mounted on the shell body 15 (which can be the shell body 15 of the first shell 11 or the shell body 15 of the second shell 12) corresponding to the interaction unit 431. At this time, the interaction unit 431 faces the interaction area 123, and the interaction area 123 is opposite to the interaction unit 431 corresponding to its function. For example, the interaction area 123 is provided with a pressable button part 125, which corresponds to the button unit 4313. The interaction area 123 is provided with a light-transmitting part 124, which corresponds to the display unit 4311.

[0123] In some embodiments, the interaction unit 431 may also be disposed on the circuit board 41. In this case, the interaction unit 431 faces the interaction area 123, and the interaction area 123 is opposite to the interaction unit 431 corresponding to its function. For example, the interaction area 123 is provided with a pressable button part 125, which corresponds to the button unit 4313. The interaction area 123 is provided with a light-transmitting part 124, which corresponds to the display unit 4311.

[0124] In other embodiments, the interaction unit 431 can also be electrically connected to the circuit board 41 via an electrical connector (not shown), which includes, but is not limited to, wires, flexible circuit boards, and metal sheets. In this case, the interaction unit 431 faces the interaction area 123, and the interaction area 123 is opposite to the interaction unit 431 corresponding to its function. For example, the interaction area 123 is provided with a pressable button portion 125, which corresponds to the button unit 4313. The interaction area 123 is provided with a light-transmitting portion 124, which corresponds to the display unit 4311.

[0125] In the electric toothbrush 100 of this embodiment, the bracket 30 supports one or more of the following: indicator lights, display screen, button unit 4313. This enables the stable setting of the interaction unit 431, which in turn cooperates with the interaction area 123 to achieve better interaction effects and enhance the user's interactive experience.

[0126] Please see Figures 4 to 6 In some embodiments, the handle 10 further includes a housing body 15 and ribs extending from the inner wall of the housing body 15 toward the opening 110, the ribs forming a first limiting portion 113. The first limiting portion 113 abuts against the outer shell of the motor body 211 and, together with the limiting structure 32 of the bracket 30, restricts the rotation of the motor body 211.

[0127] Specifically, the ribs are protruding structures extending from the inner wall of the shell body 15 towards the opening 110. The ribs can be located in the first shell 11 or the second shell 12. In this case, all the ribs constitute the first limiting part 113. The first limiting part 113 is a structure that restricts the circumferential rotation of the motor 21 around an axis parallel to the length direction Y. The first limiting part 113 abuts against the outer shell of the motor body 211, thus, together with the limiting structure 32 of the bracket 30, limiting the rotation of the motor 21. The number of first limiting parts 113 (ribs) can be one or more. When there is one or more first limiting parts 113, the first limiting parts 113 are evenly distributed on the shell body 15, so that the force on the motor body 211 is even. After the user starts the electric toothbrush 100, the motor shaft 213 of the motor 21 will vibrate. At this time, the motor 21 may rotate circumferentially around an axis parallel to the length direction Y. The first limiting part 113 abuts against the outer shell of the motor body 211, and the motor limiting part 322 of the bracket 30 also restricts the motor body 211. Therefore, while the first limiting part 113 and the bracket 30 restrict the rotation of the motor 21, they can also limit the area in which the motor 21 is accommodated in the handle 10, making the installation process of the motor 21 easier and the installation stability better.

[0128] In the electric toothbrush 100 of this embodiment, the first limiting part 113 and the limiting structure 32 of the bracket 30 cooperate to limit the accommodating area of ​​the motor 21, so as to improve the stability of the motor 21 and facilitate the installation of the motor 21.

[0129] Please see Figures 4 to 6 In some embodiments, the handle 10 also includes a housing body 15 and a rib extending from the inner sidewall of the housing body 15 toward the opening 110. The rib forms a second limiting portion 114, which abuts against the outer sidewall of the battery 23 and together with the limiting structure 32 of the bracket 30, restricts the rotation of the battery 23.

[0130] Specifically, the ribs can also be used to form the second limiting part 114. The second limiting part 114 is a structure that restricts the battery 23 from circumferentially loosening around an axis parallel to the length direction Y. The second limiting part 114 abuts against the outer wall of the battery 23 to limit the loosening of the battery 23. The number of second limiting parts 114 (ribs) can be one or more. When there is one or more second limiting parts 114, the second limiting parts 114 are evenly distributed in the first shell 11, so that the battery 23 is subjected to uniform force. When the user starts the electric toothbrush 100, the motor shaft 213 of the motor 21 will vibrate. At this time, the motor 21 may cause the battery 23 to loosen around an axis parallel to the length direction Y. The second limiting part 114 abuts against the outer wall of the battery 23, and the battery limiting part 323 of the bracket 30 also restricts the battery 23. Therefore, while the second limiting part 114 restricts the loosening of the battery 23, it can also limit the area in which the battery 23 is accommodated in the handle 10, making the installation process of the battery 23 easier and the installation stability better.

[0131] In the electric toothbrush 100 of this embodiment, the second limiting part 114 and the limiting structure 32 of the bracket 30 cooperate to limit the housing area of ​​the battery 23, so as to improve the stability of the battery 23 and facilitate the installation of the battery 23.

[0132] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. An electric toothbrush, characterized in that, include: The handle includes a first shell and a second shell, which are arranged along a first direction. The first shell defines an opening on the side facing the second shell, and the second shell closes the opening. The first shell and the second shell together form an accommodating cavity. The mechanism includes a motor and a battery. The motor includes a motor body and a motor shaft extending from the motor body. The motor body and the battery are installed in the receiving cavity through the opening. The battery is used to provide power to the motor. The handle also includes a top and a bottom that are opposite to each other in the length direction of the handle. The top is provided with a motor shaft hole, and the motor shaft passes through the motor shaft hole. The first direction is perpendicular to the length direction of the handle. The brush head is detachably mounted to the motor shaft; and The bracket includes a body and a limiting structure. The body is disposed on the outer shell surface of the motor body near the opening. The limiting structure is connected to the body and configured to at least limit and / or support the motor. In the length direction of the handle, the length of the bracket is less than the length of the mechanism.

2. The electric toothbrush according to claim 1, characterized in that, The limiting structure includes: The motor limiting part extends from both sides of the main body towards the first shell and abuts against the outer shell of the motor body to restrict the rotation of the motor body.

3. The electric toothbrush according to claim 1, characterized in that, The limiting structure includes: A separator extends toward the first housing along the first direction. The motor and the battery are located on opposite sides of the separator along the length of the handle. The separator restricts the movement of the motor along the length of the handle, and / or restricts the movement of the battery along the length of the handle.

4. The electric toothbrush according to claim 3, characterized in that, The limiting structure includes: A battery limiting part is provided, which is connected to the main body and / or the separator. In the length direction of the handle, the battery limiting part and the main body are located on opposite sides of the separator. The battery limiting part is used to abut against the outer wall of the battery to restrict the battery from becoming loose.

5. The electric toothbrush according to claim 4, characterized in that, The motor is electrically connected to the battery via a connector, and the battery limiting part is provided with a wiring port through which the connector passes.

6. The electric toothbrush according to claim 1, characterized in that, A sealing element is provided between the inner wall of the motor shaft hole and the motor shaft, and the sealing element is used to seal the gap between the inner wall of the motor shaft hole and the outer peripheral wall of the motor shaft.

7. The electric toothbrush according to claim 6, characterized in that, The main body is disposed on the outer shell surface of the motor body near the open opening; the limiting structure includes: A sealing element support is connected to the main body on one side of the handle along its length. The sealing element support is used to abut the sealing element against the inner wall of the motor shaft hole.

8. The electric toothbrush according to claim 1, characterized in that, The handle includes a housing body, the first housing including a first support portion extending from the inner sidewall of the housing body toward the opening, the limiting structure including a partition extending from the housing body toward the first support portion, the first support portion cooperating with the partition portion in the length direction of the handle to jointly limit the movement of the motor and / or the battery in the length direction of the handle.

9. The electric toothbrush according to claim 8, characterized in that, The bracket is fixedly connected to the first support portion.

10. The electric toothbrush according to claim 8, characterized in that, The first shell includes a second support portion extending from the inner sidewall of the shell body toward the opening. In the length direction of the handle, the second support portion and the separator together restrict the movement of the battery in the length direction of the handle.

11. The electric toothbrush according to claim 10, characterized in that, The electric toothbrush also includes: A circuit board is installed in the accommodating cavity through the opening and is electrically connected to the motor to control the vibration of the motor. The circuit board is supported by the bracket.

12. The electric toothbrush according to claim 11, characterized in that, The circuit board is fixedly connected to the bracket and the second support portion, respectively.

13. The electric toothbrush according to claim 1, characterized in that, The first shell and the second shell are installed along the first direction and connected front to back to form the accommodating cavity.

14. The electric toothbrush according to claim 13, characterized in that, The first shell has an inner cavity, and the second shell has an inner cavity. The accommodating cavity includes the inner cavity of the first shell and the inner cavity of the second shell. The movement is fixed in the inner cavity of the first shell, and the depth of the inner cavity of the first shell is greater than the depth of the inner cavity of the second shell.

15. The electric toothbrush according to claim 1, characterized in that, The handle includes a shell body with an interactive area, and an interactive unit is provided and supported on the bracket, with the interactive unit facing the interactive area.

16. The electric toothbrush according to claim 1, characterized in that, The handle also includes: Shell body; and Ribs extending from the inner wall of the housing towards the opening form a first limiting portion, which abuts against the outer casing of the motor body and, together with the limiting structure of the bracket, restricts the rotation of the motor body; and / or, A rib extending from the inner wall of the casing body toward the opening forms a second limiting portion, which abuts against the outer wall of the battery and, together with the limiting structure of the bracket, restricts the rotation of the battery.

Images