Electric toothbrush

Abstract

The application discloses an electric toothbrush. The electric toothbrush comprises a handle, a core and a brush head. The handle comprises a first shell and a second shell, the first shell and the second shell are arranged along a first direction, the first shell defines an open port on a side facing the second shell, the second shell closes the open port, and the first direction is perpendicular to the length direction of the handle. The core comprises a motor and a battery. The motor comprises a motor body and a motor shaft extending from the motor body. The motor body and the battery are installed in the inner cavity of the first shell through the open port. 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, the motor shaft passes through the motor shaft hole, and the motor shaft hole is arranged on the first shell. The brush head is detachably installed on the motor shaft. The motor shaft hole can be formed without assembly, the waterproof treatment requirement is reduced, the motor can be assembled and fixed through the complete motor shaft hole penetrated by the motor shaft, and the assembly difficulty of the motor is reduced.

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 brush head is driven by a motor shaft extending from the handle to achieve a cleaning effect. Since the handle has a motor shaft hole, this end needs to be sealed to prevent water from entering the electric toothbrush. However, existing electric toothbrushes have 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. During the production process of electric toothbrushes, the motor must be fixed by a bracket and the outer shell. The bottom cover has a small space and the internal positioning and installation cannot be observed, making assembly difficult. It is difficult to ensure that each component is installed in the correct position, and it is difficult to ensure the positioning and fit of the motor shaft and the motor shaft hole, as well as the installation accuracy of the seals. This affects the vibration effect of the motor and the sealing and waterproof performance of the motor shaft hole of the electric toothbrush. Summary of the Invention

[0003] This application provides an electric toothbrush.

[0004] The electric toothbrush according to this application includes a handle, a motor, and a brush head. The handle includes a first shell and a second shell, which are arranged along a first direction. The first shell defines an opening on its side facing the second shell, and the second shell closes the opening. The first direction is perpendicular to the length direction of the handle. 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 inner cavity of the first shell through the opening. The battery provides electrical power to the motor. The handle also includes a top and a bottom facing away from each other along its length direction. The top has a motor shaft hole through which the motor shaft passes, and the motor shaft hole is located in the first shell. The brush head is detachably mounted to the motor shaft.

[0005] The electric toothbrush of this embodiment uses an open opening to install the motor and battery. This open opening provides greater operating space, facilitating convenient installation of the motor and battery. Furthermore, the open opening allows for observation of the installation of internal functional components, improving installation efficiency. Simultaneously, the electric toothbrush of this embodiment utilizes a complete motor shaft hole on the first shell to limit and fix the motor shaft, thereby limiting the motor. The motor can be assembled and fixed by passing the motor shaft through the motor shaft hole, reducing the difficulty of motor assembly. In addition, compared to an incomplete motor shaft hole, which would result in more waterproof surfaces requiring sealing and increase the difficulty of waterproofing, the complete motor shaft hole on the first shell prevents motor vibration from damaging the seal of the motor shaft hole, thus improving the waterproof performance of the motor shaft hole.

[0006] In some embodiments, the second shell has an inner cavity, and in the first direction, the depth of the inner cavity of the first shell is greater than the depth of the inner cavity of the second shell.

[0007] In this embodiment of the electric toothbrush, the inner depth of the first shell is relatively large, providing more molding space for the motor shaft hole in the first direction. This allows the motor shaft hole to be directly and completely molded on the top of the first shell, avoiding misalignment of the motor shaft hole due to splicing. It also provides sufficient installation space for the motor, battery, etc. The larger inner depth of the first shell also better restricts the position of the motor, battery, etc., within the first shell, preventing displacement or loosening. The larger inner depth of the first shell also has a positioning effect, making the motor easier to install. Positioning the motor shaft with the motor shaft hole improves the fit between the motor and the motor shaft, thereby improving the transmission effect of the motor shaft and the sealing and waterproof performance of the motor shaft hole. Furthermore, the greater inner depth of the first shell compared to the second shell also has a foolproof effect, improving installation efficiency.

[0008] In some embodiments, the top and bottom are integrally formed with the first shell, or the top is divided into a first top and a second top, and the bottom is divided into a first bottom and a second bottom, wherein the first top, the first bottom and the first shell are integrally formed, and the second top, the second bottom and the second shell are integrally formed.

[0009] In this embodiment, by integrally molding the top and bottom, or by integrally molding the first top and the first bottom, the top where the motor shaft hole is located is directly molded on the first housing without secondary assembly. This allows the motor shaft hole to be directly and completely molded, and also reduces the area of ​​sealing and waterproofing that needs to be treated at the top and bottom, thereby improving the sealing effect of the motor shaft hole.

[0010] In some embodiments, along the length of the handle, the inner cavity of the first housing includes a motor mounting slot and a battery mounting slot, the motor body is mounted from the open opening and disposed in the motor mounting slot, the motor shaft passes through the motor shaft hole, and the battery is mounted from the open opening and disposed in the battery mounting slot.

[0011] In the electric toothbrush of this embodiment, the motor body and battery are installed in the motor mounting slot and battery mounting slot through an open opening. The installation is simple and the process is visible, which facilitates the installation of the motor and battery. It also facilitates the positioning and matching of the motor shaft and motor shaft hole, avoiding the reduction of motor drive performance and sealing performance caused by inaccurate matching of the motor shaft and motor shaft hole.

[0012] In some embodiments, the inner wall of the motor mounting slot is provided with ribs extending toward the opening, the ribs forming a first limiting portion, the first limiting portion being used to limit the rotation of the motor.

[0013] In the electric toothbrush of this embodiment, the first limiting part and the second shell cooperate to define the receiving area of ​​the motor, so as to improve the stability of the motor and facilitate the installation of the motor; at the same time, it avoids the movement of the motor from affecting the sealing fit between the motor shaft and the motor shaft hole, thereby improving the waterproof performance and driving performance.

[0014] In some embodiments, the inner wall of the battery mounting slot is provided with ribs extending toward the opening, the ribs forming a second limiting portion for limiting the loosening of the battery.

[0015] In the electric toothbrush of this embodiment, the second limiting part cooperates with the second shell to define the battery housing area, thereby improving the stability of the battery and facilitating battery installation.

[0016] In some embodiments, the first housing is provided with a first support portion along the length direction of the handle, and the first support portion and the top having the motor shaft hole together form the motor mounting groove.

[0017] In the electric toothbrush of this embodiment, the position of the drive motor in the length direction of the handle can be limited by the first support part. After the motor is installed on the first support part, the motor can be prevented from moving in the length direction of the handle, thereby affecting the fit between the motor shaft and the motor shaft hole, the driving effect of the motor shaft and the sealing performance of the motor shaft hole.

[0018] In some embodiments, in the first direction, the first support portion does not extend beyond the motor shaft hole.

[0019] The electric toothbrush of this embodiment utilizes the space above the first support portion to allow the motor body to be obliquely installed into the motor mounting slot, facilitating the positioning and engagement of the motor shaft and the motor shaft hole. Simultaneously, it reduces the likelihood of movement of the seal between the motor shaft and the motor shaft hole during positioning and engagement, thus improving the waterproof performance of the electric toothbrush.

[0020] In some embodiments, the motor and the battery are electrically connected via a connector, which is electrically connected to a terminal at the tail end of the motor or extends into the motor body from a cable outlet at the tail end of the motor. In the first direction, the first support portion does not extend beyond the terminal or the cable outlet.

[0021] In the electric toothbrush of this embodiment, one end of the power connector is electrically connected to the battery, and the other end of the power connector is electrically connected to the motor power connector terminal, or extends into the motor body from the wire outlet hole to be electrically connected to the motor body. The first support part does not extend beyond the power connector terminal or wire outlet hole in the first direction, so as to reserve sufficient wiring space for the power connector and reduce the wiring difficulty between the battery and the motor.

[0022] In some embodiments, the wall thickness of the first shell is greater than the wall thickness of the second shell.

[0023] In this embodiment of the electric toothbrush, the wall thickness of the first shell is greater than that of the second shell, which improves the structural strength of the first shell and thus enhances the structural strength of the inner wall of the motor shaft hole. During motor vibration, the motor shaft is prone to friction with the motor shaft hole. The larger wall thickness of the first shell can reduce the wear rate of the motor shaft hole, extend its service life, and ensure the shape and positional accuracy of the motor shaft hole. This, in turn, ensures the sealing and waterproof performance of the motor shaft hole, as well as the positional accuracy of the motor body and the motor shaft. Furthermore, the larger wall thickness of the first shell provides better physical protection for components such as the motor and / or battery. In the event of accidental drop, collision, or impact to the handle, the first shell can effectively absorb and disperse the impact force, reducing the risk of damage to components such as the motor and / or battery.

[0024] 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.

[0025] 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.

[0026] In some embodiments, the electric toothbrush further includes a bracket, which includes a body portion and a sealing element support portion. The body portion is disposed on the housing surface of the motor body near the opening. The sealing element support portion is connected to the body portion on one side of the handle along its length. The sealing element support portion is used to abut the sealing element against the inner wall of the motor shaft hole.

[0027] 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 handle from the motor shaft hole, protecting the internal components of the handle from damage, and extending the service life of the electric toothbrush.

[0028] In some embodiments, the bracket further includes a separator extending from the body portion toward the first housing in 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, the separator restricts the movement of the battery in the length direction of the handle.

[0029] The electric toothbrush of this embodiment restricts the movement of the motor and / or battery in the length direction of the handle by using a separator on the bracket. This allows for stable installation of the motor and / or battery, improves the drop resistance of the motor and / or battery, and prevents motor vibration from being transmitted to the battery, affecting battery energy storage. It also prevents heat from the battery from being directly transferred to the motor, affecting motor performance. In addition, it prevents the motor and battery from moving in the length direction of the handle, which would affect the fit between the motor shaft and the motor shaft hole, and consequently affect the waterproof performance of the electric toothbrush and the driving effect of the motor.

[0030] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0031] 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:

[0032] Figure 1 This is a three-dimensional assembly diagram of an electric toothbrush according to some embodiments of this application;

[0033] Figure 2 yes Figure 1 The diagram shown is a three-dimensional exploded view of an electric toothbrush.

[0034] Figure 3 yes Figure 1 The diagram shows a three-dimensional assembly of an electric toothbrush.

[0035] Figure 4 yes Figure 3 An exploded 3D diagram of the electric toothbrush shown.

[0036] Figure 5 yes Figure 3 Another exploded 3D diagram of the electric toothbrush shown;

[0037] Figure 6 yes Figure 3 The diagram shows a cross-section of the electric toothbrush taken by line VI-VI;

[0038] Figure 7 yes Figure 6 An enlarged schematic diagram of point VII is shown below;

[0039] Figure 8 yes Figure 3 The diagram shows the structure of the bracket in the electric toothbrush.

[0040] Figure 9 This is a comparative schematic diagram of an electric toothbrush according to some embodiments of this application and an electric toothbrush of related technologies.

[0041] The reference numerals in the detailed embodiments are as follows:

[0042] Electric toothbrush 100; handle 10; first shell 11; opening 110; first support part 111; second support part 112; first limiting part 113; second limiting part 114; charging port 115; second shell 12; accommodating cavity 101; battery mounting slot 1011; motor mounting slot 1012; top 13; first top 133; second top 135; motor shaft hole 131; bottom 14; first bottom 141; second bottom 145; light-transmitting part 124; button part 125 ; Mechanism 20; Motor 21; Motor body 211; Motor shaft 213; Battery 23; Bracket 30; Body part 31; Divider 321; Sealing support part 324; Circuit board 41; Charging structure 51; Sealing part 61; First sealing part 611; Second sealing part 613; Sealing connection part 615; Brush head 70; Brush bristles 71; Rod body 73; First direction X, handle length direction Y; Area I of functional components inside the handle; Area II of bracket; Area III of handle. Detailed Implementation

[0043] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0044] Electric toothbrushes have gained an increasingly larger market share due to their strong cleaning power and high comfort. In related technologies, an electric toothbrush includes an electric toothbrush head and incorporates various functional components. The size and shape of an electric toothbrush directly affect its structure, thus influencing the user's perception of its convenience and practicality. However, there is a significant problem of homogenization among electric toothbrush products; most are cylindrical. Besides the outermost shell, an electric toothbrush typically contains one or more internal supports for securing the functional components. During the manufacturing process, the motor must be secured using these supports and the outer shell, making assembly difficult. To address this issue, this application provides an electric toothbrush 100 (see [link to application]). Figure 1 and Figure 2 ).

[0045] Please see Figure 1 and Figure 2 The electric toothbrush 100 of this application includes a handle 10, a motor 20, and a brush head 70. The handle 10 includes a first housing 11 and a second housing 12, 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 direction X is perpendicular to the longitudinal direction Y of the handle 10. 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 mounted in the inner cavity of the first housing 11 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. The motor shaft hole 131 is located in the first housing 11. The brush head 70 is detachably mounted on the motor shaft 213.

[0046] 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.

[0047] 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 the handle 10 from slipping off the hand during use. The handle 10 can be 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, as shown in the figures.

[0048] 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.

[0049] 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 shape with the same height in the first direction X, an inclined peripheral shape with different heights in the first direction X, or an irregularly shaped peripheral shape 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. It is understood that the peripheral shape of the side of the second shell 12 facing the first shell 11 needs to 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 without further elaboration.

[0050] 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. After 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 that the bristles 71 on the vibrating brush head 70 can clean the areas to be cleaned in the oral cavity (such as teeth). The opening 110 provides operating space for the process of installing the motor body 211 into the motor mounting slot 1012, so the motor body 211 can be installed in the motor mounting slot 1012 through the opening 110 to achieve a stable installation of the motor body 211 and the first housing 11.

[0051] 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. Opening 110 provides operating space for the process of installing battery 23 into battery mounting slot 1011. Therefore, battery 23 can be installed in battery mounting slot 1011 through opening 110 to achieve stable installation of battery 23 and first housing 11.

[0052] The assembly steps of the electric toothbrush 100 can be as follows: First, place the battery 23 in the first housing 11; then, place the motor 21 in 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.

[0053] In the length direction Y, the first support portion 111 includes two opposing sides. In some embodiments, only one side of the first support portion 111 abuts against the motor body 211, in which case the first support portion 111 restricts the movement of the motor body 211 in the length direction Y. In other embodiments, only one side of the first support portion 111 abuts against the battery 23, in which case the first support portion 111 restricts the movement of the battery 23 in the length direction Y. In still other embodiments, one side of the first support portion 111 abuts against both the motor body 211 and the battery 23, in which case the first support portion 111 restricts the movement of both the motor body 211 and the battery 23 in the length direction Y, and in this case, the motor body 211 and the battery 23 can be arranged side by side in a direction perpendicular to the length direction Y (such as the first direction X). In some other embodiments, one side of the first support 111 abuts against the motor body 211, and the other side of the first support 111 abuts against the battery 23. At this time, the first support 111 restricts the movement of the motor body 211 and the battery 23 in the length direction Y. At this time, the motor body 211 and the battery 23 can be arranged sequentially in the length direction Y.

[0054] The motor shaft hole 131 is used to allow the motor shaft 213 to extend from the receiving cavity 101 to the outside of the handle 10. The extended portion of the motor shaft 213 is used to connect with the head of the electric toothbrush 100. In conventional designs, the motor shaft hole 131 is partially formed in the second housing 12 and partially formed in the first housing 11, requiring the second housing 12 and the first housing 11 to form the motor shaft hole 131 through a fitting. In some embodiments of this application, the motor shaft hole 131 is located in the second housing 12, in which case the motor shaft 213 passes through the second housing 12. In other embodiments of this application, the motor shaft hole 131 is located in the first housing 11, with the motor shaft 213 passing through the first housing 11. That is, the motor shaft hole 131 is directly formed in the second housing 12 or the first housing 11, without the need for the second housing 12 and the first housing 11 to form the motor shaft hole 131. Furthermore, during assembly, the motor shaft hole 131 can be used to limit and fix the motor shaft 213, reducing the assembly complexity of the motor 21. When the second housing 12 and the first housing 11 are installed and connected along the second direction Y, the motor shaft 213 is inserted into the motor shaft hole 131 in an installation direction parallel to or at a certain angle to the first direction X to achieve cooperation with the handle 10.

[0055] The electric toothbrush 100 of this embodiment uses an open opening 110 to install the motor 21 and battery 23. The larger operating space of the open opening 110 facilitates convenient installation of the motor 21 and battery 23, and allows observation of the installation status of internal functional components, improving installation efficiency. Simultaneously, the electric toothbrush 100 of this embodiment utilizes a complete motor shaft hole 131 on the first housing 11 to limit and fix the motor shaft 213, thereby limiting the motor 21. The motor 21 can be assembled and fixed by passing the motor shaft 213 through the motor shaft hole 131, reducing the assembly difficulty of the motor 21. Furthermore, compared to an incomplete motor shaft hole 131, which would result in more waterproof surfaces requiring sealing and increase the difficulty of waterproofing, the complete motor shaft hole 131 on the first housing 11 prevents damage to the seal of the motor shaft hole 131 due to motor 21 vibration, thus improving the waterproof performance of the motor shaft hole 131.

[0056] Please see Figure 5 In some embodiments, the second shell 12 has an inner cavity, and in the first direction X, the inner cavity depth of the first shell 11 is greater than the inner cavity depth of the second shell 12.

[0057] Specifically, the inner cavity depth of the first shell 11 and the inner cavity depth of the second shell 12 are both dimensions in the second direction Y. The inner cavity depth of the first shell 11 is relatively large, which can provide sufficient space for components such as the movement 20 and the battery 23, ensuring that the components can be accommodated in the first shell 11.

[0058] In the electric toothbrush 100 of this embodiment, the inner cavity depth of the first shell 11 is relatively large, providing a larger forming space for the motor shaft hole 131 in the first direction X. This allows the motor shaft hole 131 to be directly and completely formed on the top 13 of the first shell 11, avoiding gaps or misalignment of the motor shaft hole 131 caused by splicing. The larger inner cavity depth of the first shell 11 in the first direction X also provides sufficient installation space for the motor 21, battery 23, etc. The larger inner cavity 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 cavity depth of the first shell 11 also has a positioning effect, making it easier to install the motor 21. Positioning the motor 213 with the motor shaft hole 131 improves the fit 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. Furthermore, the greater inner cavity depth of the first shell 11 than that of the second shell 12 also has a foolproof effect, improving installation efficiency.

[0059] Please see Figure 4 and Figure 5 In some implementations, please refer to Figures 2 to 5In some embodiments, the top 13 includes a first top 133 and a second top 135, and the bottom 14 includes a first bottom 141 and a second bottom 145. The first top 133 and the first bottom 141 are integrally formed with the first shell 11, and the second top 135 and the second bottom 145 are integrally formed with the second shell 12. It should be noted that in some embodiments of this application, the inner cavity of the first shell 11 can be formed by the first shell 11, the first top 133, and the first bottom 141, and the inner cavity of the second shell 12 can be formed by the second shell 12, the second top 135, and the second bottom 135.

[0060] In this embodiment of the electric toothbrush 100, the first top 133, the first bottom 141, and the first shell 11 are integrally formed, as are the second top 135, the second bottom 145, and the second shell 12. This reduces the need for separate components for the top 13, reduces assembly steps, and also reduces the areas of the top 13 and bottom 14 that require sealing and waterproofing, thus lowering the difficulty of waterproofing and improving the sealing performance of the electric toothbrush 100. The top 13, where the motor shaft hole 131 is located, is directly formed on the first shell 11 without secondary assembly, allowing the motor shaft hole 131 to be formed directly and completely. This also reduces the areas of the top 13 and bottom 14 that require sealing and waterproofing, thereby improving the sealing performance of the electric toothbrush 100 and the sealing effect of the motor shaft hole 11.

[0061] In some embodiments, in the longitudinal direction Y of the handle 10, the second bottom 145 is at least partially higher than the first bottom 141. In other words, in the longitudinal direction Y of the handle 10, at least a portion of the second bottom 145 is closer to the second top 135 than the first bottom 141. Thus, the first bottom 141 has a larger supporting area, enabling stable vertical support of the electric toothbrush 100, while reducing the contact area between the second bottom 145 and the countertop, reducing the accumulation of dirt and mold on the bottom 14 of the second shell 12. When the second bottom 145 is entirely higher than the countertop, the area requiring sealing and waterproofing between the second bottom 145 and the first bottom 141 does not contact the countertop, further improving the waterproof performance and resistance to mold and corrosion of the bottom 14.

[0062] Please see Figures 4 to 6 In some embodiments, along the length Y direction of the handle 10, the inner cavity of the first housing 11 includes a motor mounting slot 1012 and a battery mounting slot 1011. The motor body 211 is installed from the opening 110 and disposed in the motor mounting slot 1012, the motor shaft 213 passes through the motor shaft hole 131, and the battery 23 is installed from the opening 110 and disposed in the battery mounting slot 1011.

[0063] The battery mounting slot 1011 is used to install the battery 23, and the motor mounting slot 1012 is used to install the motor 21. In related technologies, components such as the motor 21 and battery 23 need to be fixed on the bracket 30 first, and the overall structure formed by the motor 21, battery 23, and bracket 30 needs to be installed in the handle 10 through the bottom 14. When using the bracket 30 for auxiliary installation, the bracket 30 is relatively large, and the handle 10 also needs to be relatively large to accommodate the installation of the overall structure formed by the motor 21, battery 23, and bracket 30.

[0064] In related technologies, components such as motors and batteries need to be fixed on a support frame first, and 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 needs to be relatively large to accommodate the installation of the overall structure formed by the motor, battery, and support frame. Therefore, this installation method will result in a larger overall size of the electric toothbrush, i.e., a larger overall size of the electric toothbrush. As shown in Figure (8), 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 increased overall size of the electric toothbrush, the material cost will increase during the production of the electric toothbrush.

[0065] In comparison, the electric toothbrush 100 of this application utilizes the first support portion 111 to limit the functional components such as the motor 21 and / or battery 23, allowing the motor 21 and / or battery 23 to be directly installed into the handle 10 via the first support portion 111, without needing to first install all the functional components onto a larger support frame before installing them into the handle 10. This structure of the electric toothbrush 100 results in the entire electric toothbrush 100 having only one layer of wall thickness in the width direction (first direction X), such as... Figure 9 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.

[0066] In the electric toothbrush 100 of this embodiment, the motor body 211 and the battery 23 are installed in the motor mounting slot 1012 and the battery mounting slot 1011 through the open opening 110. The installation is simple and the process is visible, which facilitates the installation of the motor 21 and the battery 23. It also facilitates the positioning and matching of the motor shaft 213 and the motor shaft hole 131, and avoids the reduction of the driving performance and sealing performance of the motor 21 due to the inaccurate matching of the motor shaft 213 and the motor shaft hole 131.

[0067] Please see Figures 4 to 6In the electric toothbrush 100 of this embodiment, the inner wall of the motor mounting groove 1012 is provided with ribs extending toward the opening 110, and the ribs form a first limiting part 113, which is used to limit the rotation of the motor 21.

[0068] Specifically, the ribs are protruding structures extending from the inner wall of the first shell 11 (i.e., the inner wall of the motor mounting slot 1012) towards the opening 110. All the ribs in the motor mounting slot 1012 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 to limit the rotation of the motor 21. The number of first limiting parts 113 (ribs) can be one or more. When the number of first limiting parts 113 is one or more, the first limiting parts 113 are evenly distributed in the motor mounting slot 1012, so that the force on the motor body 211 is uniform. 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 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 second shell 12 also restricts the motor body 211. Therefore, while the first limiting part 113 restricts the rotation of the motor 21, it 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.

[0069] In the electric toothbrush 100 of this embodiment, the first limiting part 113 and the second shell 12 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; at the same time, it avoids the movement of the motor 21 from affecting the sealing fit between the motor shaft 213 and the motor shaft hole 131, thereby improving the waterproof performance and driving performance.

[0070] Please see Figures 4 to 6 In the electric toothbrush 100 of this embodiment, the inner wall of the battery mounting groove 1011 is provided with ribs extending toward the opening 110, and the ribs form a second limiting part 114, which is used to limit the rotation of the battery 23.

[0071] Specifically, the ribs can also be protruding structures extending from the inner wall of the first shell 11 (i.e., the inner wall of the motor mounting groove 1012) towards the opening 110. All the ribs in the battery mounting groove 1011 constitute the second limiting part 114. The second limiting part 114 is a structure that restricts the battery 23 from rotating circumferentially 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 rotation of the battery 23. The number of second limiting parts 114 (ribs) can be one or more. When the number of second limiting parts 114 is one or more, the second limiting parts 114 are evenly distributed in the battery mounting groove 1011, so that the battery 23 is subjected to uniform force. 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 drive the battery 23 to rotate circumferentially 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 second shell 12 also restricts the battery 23. Therefore, while the second limiting part 114 restricts the rotation 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.

[0072] In the electric toothbrush 100 of this embodiment, the second limiting part 114 cooperates with the second shell 12 to define the housing area of ​​the battery 23, thereby improving the stability of the battery 23 and facilitating the installation of the battery 23.

[0073] Please see Figures 4 to 6 In some embodiments, in the length direction Y of the handle 10, the first housing 11 is provided with a first support portion 111, and the first support portion 111 and the top 13 with a motor shaft hole 131 together form a motor mounting groove 1012.

[0074] The first support portion 111 is a structure used to restrict the position of at least some functional components in the electric toothbrush 100. The first support portion 111 extends from the inner sidewall of the first shell 11 along a first direction X. The first shell 11 and the first support portion 111 can be integrally formed or separately formed. Wherein, when the first shell 11 and the first support portion 111 are separately formed, the first shell 11 and the first support portion 111 can be connected together by a detachable connection or a non-detachable connection. In this case, in the length direction Y, the first support portion 111 divides the spatial structure in the first shell 11 into a battery mounting groove 1011 and a motor mounting groove 1012, which are located on opposite sides of the first support portion 111, respectively.

[0075] In the electric toothbrush 100 of this embodiment, the position of the drive motor 21 in the length direction Y of the handle 10 can be limited by the first support part 111. After the motor 21 is installed on the first support part 111, the motor 21 can be prevented from moving in the length direction Y of the handle 10, thereby affecting the fit between the motor shaft 213 and the motor shaft hole 131, and affecting the driving effect of the motor shaft 213 and the sealing performance of the motor shaft hole 131.

[0076] Please see Figures 4 to 6 In some embodiments, the electric toothbrush 100 further includes a second support portion 112, with the first support portion 111 and the second support portion 112 spaced apart, and the first support portion 111 and the second support portion 112 together defining a battery mounting slot 1011.

[0077] 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 sidewall of the first shell 11 along the first direction X. The first shell 11 and the second support portion 112 can be integrally formed or separately formed. Wherein, when the first shell 11 and the second support portion 112 are separately formed, the first shell 11 and the second support portion 112 can be connected together by a detachable connection method or a non-detachable connection method.

[0078] Along the length Y direction, the handle 10 also includes a top 13 and a bottom 14 facing away from each other, with the top 13 closer to the brush head 70 than the bottom 14. The top 13 has a motor shaft hole 131, allowing the motor shaft 213 to pass through the motor shaft hole 131 from the top 13 to the outside of the handle 10. The distance between the top 13 and the first support portion 111 corresponds to the dimension of the motor body 211 along the length Y direction. Therefore, the spatial structure jointly defined by the top 13 and the first support portion 111 is the motor mounting slot 1012. Furthermore, along the length Y direction of the handle 10, the first support portion 111 and the second support portion 112 are arranged alternately, and the distance between the first support portion 111 and the second support portion 112 corresponds to the dimension of the battery 23 along the length Y direction. Therefore, the spatial structure jointly defined by the first support portion 111 and the second support portion 112 is the battery mounting slot 1011.

[0079] In this embodiment, the electric toothbrush 100 uses the second support 112 to limit the position of the battery 23. After the battery 23 is installed on the second support 112, the battery 23 can be prevented from moving in the length direction Y of the handle 10, thereby improving the drop resistance of the battery 23.

[0080] Please see Figures 4 to 6In some embodiments, a charging hole 115 for charging is provided between the second support 112 and the bottom 14. The charging hole 115 penetrates the first shell 11. The electric toothbrush 100 also includes a charging structure 51, which is disposed in the charging hole 115 and is electrically connected to the battery 23 through an electrical connector.

[0081] Specifically, the charging port 115 is a structure for connecting a device to replenish the battery 23. The charging port 115 penetrates the first housing 11 and connects the interior of the handle 10 to the exterior of the handle 10. A charging structure 51 is provided in the charging port 115, and the charging structure 51 can block at least part of the charging port 115. The charging structure 51 is electrically connected to the battery 23 via an electrical connector (not shown), so that the user can replenish the battery 23 with the help of the charging structure 51. The electrical connector may be, but is not limited to, a wire harness, a flexible circuit board, and a metal sheet. In the length direction Y, the charging port 115 is located between the second support portion 112 and the bottom 14. At this time, the charging port 115 and the battery mounting groove 1011 are separated by the second support portion 112, and there is also a certain distance between the charging port 115 and the bottom 14. Therefore, the charging structure 51 can be a certain distance from the battery 23 to avoid the risk of short circuit, and also a certain distance from the bottom 14 to prevent the electric toothbrush 100 from contaminating the charging port 115 and the charging structure 51 when placed on a water-stained surface.

[0082] In this embodiment of the electric toothbrush 100, the battery 23 and the charging port 115 are separated by the second support portion 112. At this time, the charging structure 51 is spaced apart from the battery 23 inside the handle 10, preventing direct contact between the battery 23 and the charging structure 51, thus reducing the risk of short circuits and leakage. Simultaneously, since the charging port 115 is located on the side of the handle 10, and is a certain distance from the bottom 14 along the length Y direction of the handle 10, it prevents water from entering the charging port 115 or causing corrosion and mold when the electric toothbrush 100 is placed perpendicularly along the length Y direction of the handle 10 on a wet surface, thereby improving the waterproof performance and corrosion resistance of the electric toothbrush 100.

[0083] Please see Figure 4 and Figure 5 In some embodiments, in the first direction X, the first support portion 111 does not extend beyond the opening 110.

[0084] Specifically, 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, since the first support portion 111 does not extend beyond the opening 110, the motor 21 is not restricted during installation into the motor mounting slot 1012, making the positioning and engagement of the motor shaft 213 and the motor shaft hole 131 easier. In this case, the size of the motor mounting slot 1012 does not need to be large to accommodate the installation of the motor 21 into the slot 1012. After the motor 21 is stably installed, the first support portion 111 is relatively close to the end of the motor 21, thus effectively providing support for the motor 21. Furthermore, the handle 10 can be made smaller in the length direction Y, which is beneficial for miniaturization and material saving.

[0085] In the electric toothbrush 100 of this embodiment, in the first direction X, the first support portion 111 does not extend beyond the open opening 110. This avoids the first support portion 111 being too high, and during the installation of the motor 21, it avoids the difficulty in positioning and fitting the motor shaft 213 and the motor shaft hole 131, thus reducing the difficulty of installing the motor 21. Conversely, if the first support portion 111 is too high, in order to reduce the installation difficulty, the space of the motor mounting groove 1012 formed by the first support portion 111 needs to be increased. This would cause the first support portion 111 to be far away from the end of the motor 21, and it would not be able to effectively support the motor 21. At the same time, it would increase the length of the handle 10, increasing the material cost.

[0086] Please see Figure 4 and Figure 5 In some embodiments, in the first direction X, the first support portion 111 does not extend beyond the motor shaft hole 131.

[0087] Specifically, when the first support portion 111 does not extend beyond the motor shaft 213, the space above the first support portion 111 is relatively large, allowing the motor shaft 213 to 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 does not affect the process of inserting the motor shaft 213 into the motor shaft hole 131, resulting in a tighter positioning fit between the motor shaft 213 and the motor shaft hole 131.

[0088] In this embodiment, the electric toothbrush 100 utilizes the space above the first support portion 111 to allow the motor body 211 to be obliquely installed into the motor mounting slot 1012, facilitating the positioning and engagement of the motor shaft 213 and the motor shaft hole 131. Simultaneously, it reduces the likelihood of movement of the seal 61 between the motor shaft 213 and the motor shaft hole 131 during positioning and engagement, thus improving the waterproof performance of the electric toothbrush 100.

[0089] Please see Figures 4 to 6 In some embodiments, the motor 21 and the battery 23 are electrically connected via a connector. The connector is electrically connected to the power terminal at the tail end of the motor 21 or extends into the motor body 211 from the outlet hole at the tail end of the motor 21. In the first direction X, the first support portion 111 does not exceed the power terminal or outlet hole.

[0090] Specifically, the electrical connector (not shown) is a structure used to electrically connect the motor 21 and the battery 23. The electrical connector can be, but is not limited to, a wire, a flexible circuit board, or a metal sheet. One end of the electrical connector is electrically connected to the battery 23, and the other end is electrically connected to the motor 21. In some embodiments, the portion of the motor 21 used for electrical connection with the electrical connector is a terminal at the tail end of the motor 21, which is conductive, allowing the motor 21 to be electrically connected to the battery 23 via the electrical connector. In other embodiments, the portion of the motor 21 used for electrical connection with the electrical connector is an internal electrical connection structure within the motor body 211. In this case, the electrical connector extends from the outlet hole (not shown) at the tail end of the motor 21 into the motor body 211 and is electrically connected to this electrical connection structure, allowing the motor 21 to be electrically connected to the battery 23 via the electrical connector. In the first direction X, the first support portion 111 does not exceed the power terminal or the wire outlet hole, so that the area between the first support portion 111 and the second housing 12 is large, so that the power connector can be accommodated in the above area. At this time, the first support portion 111 provides sufficient wiring space for the power connector, reducing the wiring difficulty between the battery 23 and the motor 21.

[0091] In the electric toothbrush 100 of this embodiment, one end of the power connector is electrically connected to the battery 23, and the other end of the power connector is electrically connected to the power terminal of the motor 21, or extends into the motor body 211 from the wire outlet hole to be electrically connected to the motor body 21. The first support part 111 does not extend beyond the power terminal or the wire outlet hole in the first direction, so as to reserve sufficient wiring space for the power connector and reduce the wiring difficulty between the battery 23 and the motor 21.

[0092] Please see Figure 5 In some embodiments, the wall thickness of the first shell 11 is greater than the wall thickness of the second shell 12.

[0093] In the electric toothbrush 100 of this embodiment, the wall thickness of the first shell 11 is greater than that of the second shell 12, which can improve the structural strength of the first shell 11 and thus enhance the structural strength of the inner wall of the motor shaft hole 131. During the vibration of the motor 21, the motor shaft 213 is prone to friction with the motor shaft hole 131. The larger wall thickness of the first shell 11 can reduce the wear rate of the motor shaft hole 131, extend the service life of the motor shaft hole 131, and also ensure the shape and positional accuracy of the motor shaft hole 131, thereby ensuring the sealing and waterproof performance of the motor shaft hole 131, as well as ensuring the positional accuracy of the motor body 211 and the motor shaft 213. In addition, the larger wall thickness of the first shell 11 can provide better physical protection for the motor 21 and / or battery 23 and other components inside. When the handle 10 is accidentally dropped, collided, or subjected to external impact, the first shell 11 can effectively absorb and disperse the impact force, reducing the risk of damage to the motor 21 and / or battery 23 and other components. The smaller wall thickness of the second shell 12 reduces the weight of the handle 10, making it easier for users to hold and operate, and also reduces the cost of the handle 10. The smaller wall thickness of the second shell 12 allows the button portion 125 and the light-transmitting portion 124 to be closer to the outer surface of the second shell 12, resulting in a shorter distance for the user to operate the button portion 125 or view the light-transmitting portion 124, making the operation more sensitive and accurate.

[0094] Please see Figure 4 In some embodiments, a seal 61 is provided between the inner wall of the motor shaft hole 131 and the motor shaft 213. 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.

[0095] 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.

[0096] 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.

[0097] Please see Figure 4 , Figure 5 and Figure 7 In some embodiments, the electric toothbrush 100 further includes a bracket 30, which includes a body portion 31 and a sealing member 61 support portion 324. The body portion 31 is disposed on the housing surface of the motor body 211 near the opening 110. The sealing member 61 support portion 324 is connected to the body portion 31 on one side in the length direction Y of the handle 10. The sealing member 61 support portion 324 is used to abut the sealing member 61 against the inner wall of the motor shaft hole 131.

[0098] Specifically, the bracket 30 is a structure used to support and mount functional components such as the light-transmitting part 124, and the bracket 30 is positioned on the outer periphery of the motor 21. The body part 31 is the portion of the bracket 30 that contacts the motor body 211. The outer shell of the motor body 211 has a support surface, which is planar and provides support for the bracket 30 in the second direction Y. The body part 31 ensures full contact between the bracket 30 and the support surface, allowing the bracket 30 to be better secured to the outer shell of the motor body 211. The connection between the bracket 30 and the handle 10 allows the components mounted on it to be fixedly installed relative to the handle 10.

[0099] Because there is a certain distance between the motor body 211 and the first end face, and the motor shaft 213 needs to extend from the motor shaft hole 131 on the first end face, the seal 61 support portion 324 is connected to the body portion 31 on one side in the first direction X, and the seal 61 support portion 324 is connected to the seal 61 on the other side in the first direction X, and is used to abut the seal 61 against the inner wall of the motor shaft hole 131. The seal 61 support portion 324 is usually made of a harder material, while the seal 61 is made of a softer material. The hardness of the seal 61 support portion 324 can provide support for the seal 61, ensuring that the seal 61 can still maintain its fit with the inner wall of the motor shaft hole 131 when subjected to external force or vibration. The seal 61 can seal 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 from damage, and extending the service life of the electric toothbrush 100.

[0100] The support portion passes through the motor shaft 213 in the first direction X and surrounds the outer peripheral wall of the motor shaft 213, thus limiting the movement of the motor shaft 213 and keeping it stable during operation, reducing vibration and shaking. The portion of the support portion near the motor body 211 is larger than the portion away from the motor body 211, thereby forming a stepped surface. The seal 61 is fitted onto the outer peripheral wall of the support portion and matches the shape of the support portion. The portion of the seal 61 near the motor body 211 is larger than the portion away from the motor body 211, thus engaging with the stepped surface. The stepped surface facilitates assembly and ensures that the seal 61 will not shift or loosen on the support portion, further enhancing the sealing performance.

[0101] The sealing element 61 includes a first sealing portion 611, a second sealing portion 613, and a sealing connection portion 615. In the first direction X, the end of the first sealing portion 611 away from the motor body 211 and the end of the second sealing portion 613 away from the motor body 211 are connected by the sealing connection portion 615. The first sealing portion 611 surrounds the outer peripheral wall of the support portion and is located within the gap between the outer peripheral wall of the support portion and the inner wall of the motor shaft hole 131, effectively sealing the gap between the outer peripheral wall of the support portion and the inner wall of the motor shaft hole 131 to prevent moisture from entering the receiving cavity 101. The second sealing portion 613 is located between the inner peripheral wall of the support portion and the outer peripheral wall of the motor shaft 213, effectively sealing the gap between the inner peripheral wall of the support portion and the outer peripheral wall of the motor shaft 213 to prevent moisture from entering the receiving cavity 101. The connecting part is connected to the first sealing part 611 and the second sealing part 613 on the side facing the accommodating cavity 101 in the first direction X. The connecting part surrounds the outer peripheral wall of the motor shaft 213 and is located in the gap between the outer peripheral wall of the motor shaft 213 and the inner wall of the motor shaft hole 131. It can seal the gap between the outer peripheral wall of the motor shaft 213 and the inner wall of the motor shaft hole 131, and also prevent moisture from entering the accommodating cavity 101 from the gap between the outer peripheral wall of the support and the inner wall of the motor shaft hole 131 and the gap between the inner peripheral wall of the support and the outer peripheral wall of the motor shaft 213.

[0102] In the electric toothbrush 100 of this embodiment, the hardness of the support portion 324 of the seal 61 is sufficient to provide support for the seal 61 and increases the contact area with the seal 61. This ensures that the seal 61 can remain in contact with the inner wall of the motor shaft hole 131 when subjected to external force or vibration of the motor 21. As a result, the seal 61 can be tightly installed in the gap between the motor shaft hole 131 and the motor shaft 213, preventing moisture from seeping into the handle 10 from the motor shaft hole 131, protecting the internal components of the handle 10 from damage, and extending the service life of the electric toothbrush 100.

[0103] Please see Figure 4 , Figure 5 and Figure 8In some embodiments, the bracket 30 further includes a separator 321 extending from the body portion 31 along a first direction X toward the first housing 11. In 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.

[0104] Specifically, the separator 321 is a structure on the bracket 30 that cooperates with the first support portion 111 to jointly restrict the movement of the motor 21 and / or battery 23 in the longitudinal direction Y. The separator 321 extends from the bracket 30 toward the first support portion 111. The separator 321 and the bracket 30 can be integrally formed or separately formed. Wherein, where the separator 321 and the bracket 30 are separately formed, the separator 321 and the bracket 30 can be connected together by a detachable connection or a non-detachable connection. In the first direction X, the separator 321 and the first support portion 111 are positioned opposite each other, so that when the first shell 11 and the second shell 12 are connected along the first direction X, the separator 321 and the first support portion 111 can cooperate with each other.

[0105] The battery 23 and the motor 21 are respectively disposed on opposite sides of the separator 321. In some embodiments, both the separator 321 and the first support 111 abut against the motor body 211, in which case the separator 321 and the first support 111 jointly restrict the movement of the motor body 211 in the length direction Y. In some embodiments, both the separator 321 and the first support 111 abut against the battery 23, in which case the separator 321 and the first support 111 jointly restrict the movement of the battery 23 in the length direction Y. In other embodiments, both the separator 321 and the first support 111 abut against both the motor body 211 and the battery 23, in which case the separator 321 and the first support 111 jointly restrict the movement of the motor body 211 and the battery 23 in the length direction Y. In these cases, 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.

[0106] 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 using the separator 321 on the bracket 30. This allows for stable installation of the motor 21 and / or battery 23, improves the drop resistance of the motor 21 and / or battery 23, and also prevents the vibration of the motor 21 from being transmitted to the battery 23, affecting the energy storage of the battery 23. It also prevents the heat on the battery 23 from being directly transferred to the motor 21, affecting the performance of the motor 21. In addition, it also prevents the motor 21 and battery 23 from moving in the length direction Y of the handle 10, thereby affecting the fit between the motor shaft 213 and the motor shaft hole 131, and consequently affecting the waterproof performance of the electric toothbrush 100 and the driving effect of the motor 21.

[0107] Please see Figure 4 and Figure 5 In some embodiments, the first shell 11 and the second shell 12 together form a receiving cavity 101; the electric toothbrush 100 also includes a circuit board 41, which is installed in the receiving cavity 101 through an opening 110, and a bracket 30 is used to space the circuit board 41 and the motor 21.

[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 the interactive unit to start, so as to realize other functions of electric toothbrush 100, such as display function. When bracket 30 is installed in motor mounting slot 1012 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 on bracket 30 through opening 110 so that 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. When first housing 11 and second housing 12 are connected along the first direction X, circuit board 41 is sandwiched between bracket 30 and second housing 12, and approaches second housing 12 by raising bracket 30.

[0109] The interaction area 123 is a visible and / or operable area within the second housing 12 for user interaction with the electric toothbrush 100. User interaction with the electric toothbrush 100 includes, but is not limited to, turning the electric toothbrush 100 on, 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 screen, indicator lights, and buttons. Specifically, the display screen is a structure within the electric toothbrush 100 used to display content, including but not limited to cleaning duration, cleaning mode, and cleaning area. The indicator light is a structure within the electric toothbrush 100 used to emit prompt signals. Different illumination patterns of the indicator light can indicate that the electric toothbrush 100 is in different operating modes, conveying at least some of the operating status information of the electric toothbrush 100 to the user. The button is the structure in the electric toothbrush 100 used to output commands. Users can control the working mode of the electric toothbrush 100 by pressing the button in different ways, such as turning the electric toothbrush 100 on or off, and changing the cleaning mode.

[0110] In some embodiments, the interaction unit 431 is disposed on the circuit board 41, with the interaction unit 431 facing the interaction area 123. The interaction area 123 and the interaction unit 431 corresponding to its function are opposite each other in the first direction X. For example, the interaction area 123 is provided with a pressable button portion 125, which corresponds to the button (interaction unit 431) in the first direction X. The interaction area 123 is provided with a light-transmitting portion 124, which corresponds to the display screen and / or indicator light (interaction unit 431) in the first direction X.

[0111] In other embodiments, the interaction unit 431 is 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 and the interaction unit 431 corresponding to its function are opposite each other in the first direction X. For example, the interaction area 123 is provided with a pressable button portion 125, which corresponds to a button (interaction unit 431) in the first direction X. The interaction area 123 is provided with a light-transmitting portion 124, which corresponds to the display screen and / or indicator light (interaction unit 431) in the first direction X.

[0112] In this embodiment, the electric toothbrush 100 mounts the circuit board 41 through the open opening 110, which increases the operating space for mounting the circuit board 41 and facilitates the positioning and cooperation of some interactive units 431 on the circuit with the interactive area 123 of the second shell 12. At the same time, the bracket 30 separates the motor 21 and the circuit board 41, which can reduce the vibration of the motor 21 transmitted to the circuit board 41, thus achieving stable and convenient installation of the circuit board 41.

[0113] In this embodiment, the electric toothbrush 100 can install the circuit board 41 through the open opening 110, which increases the operating space for installing the circuit board 41 and enables precise positioning and installation of the circuit board 41. At the same time, the bracket 30 can be used to separate the motor 21 and the circuit board 41, which can reduce the vibration of the motor 21 transmitted to the circuit board 41, thus achieving stable and convenient installation of the circuit board 41.

[0114] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combination of these technical features does not contradict each other, it should be considered within the scope of this specification. At the same time, other embodiments can be derived from the above embodiments, so that structural and logical substitutions and changes can be made without departing from the scope of this disclosure.

[0115] The embodiments described above are merely illustrative of several implementations of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the scope of protection of this application. Therefore, the scope of protection of this patent application should be determined by the appended claims.

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 one side facing the second shell, and the second shell closes the opening. The first direction is perpendicular to the length direction of the handle. 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 inner cavity of the first housing through the opening. The battery provides power to the motor. The handle also includes a top and a bottom opposite to each other in the length direction of the handle. The top has a motor shaft hole through which the motor shaft passes. The motor shaft hole is located in the first housing. The brush head is detachably mounted on the motor shaft.

2. The electric toothbrush according to claim 1, characterized in that, The second shell has an inner cavity, and in the first direction, the depth of the inner cavity of the first shell is greater than the depth of the inner cavity of the second shell.

3. The electric toothbrush according to claim 1, characterized in that, The top and bottom are integrally formed with the first shell, or the top is divided into a first top and a second top, and the bottom is divided into a first bottom and a second bottom. The first top, the first bottom and the first shell are integrally formed, and the second top, the second bottom and the second shell are integrally formed.

4. The electric toothbrush according to claim 1, wherein in the length direction of the handle, the inner cavity of the first housing includes a motor mounting slot and a battery mounting slot, the motor body is mounted from the open opening and disposed in the motor mounting slot, the motor shaft passes through the motor shaft hole, and the battery is mounted from the open opening and disposed in the battery mounting slot.

5. The electric toothbrush according to claim 4, characterized in that, The inner wall of the motor mounting slot is provided with ribs extending toward the opening, the ribs forming a first limiting part, the first limiting part being used to limit the rotation of the motor; and / or the inner wall of the battery mounting slot is provided with ribs extending toward the opening, the ribs forming a second limiting part, the second limiting part being used to limit the loosening of the battery.

6. The electric toothbrush according to claim 4, characterized in that, Along the length of the handle, the first housing is provided with a first support portion, and the first support portion and the top with the motor shaft hole together form the motor mounting groove.

7. The electric toothbrush according to claim 6, characterized in that, In the first direction, the first support portion does not extend beyond the motor shaft hole.

8. The electric toothbrush according to claim 6, characterized in that, The motor and the battery are electrically connected via a connector. The connector is electrically connected to the power terminal at the tail end of the motor or extends into the motor body from the outlet hole at the tail end of the motor. In the first direction, the first support portion does not exceed the power terminal or the outlet hole.

9. The electric toothbrush according to claim 1, characterized in that, The wall thickness of the first shell is greater than the wall thickness of the second shell.

10. 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.

11. The electric toothbrush according to claim 10, characterized in that, The electric toothbrush also includes a bracket, which includes a body and a sealing support. The body is disposed on the outer shell of the motor body near the opening. The sealing support is connected to the body on one side of the handle along its length. The sealing support is used to abut the sealing element against the inner wall of the motor shaft hole.

12. The electric toothbrush according to claim 11, characterized in that, The bracket further includes a separator extending from the body portion toward the first shell in the first direction. The motor and 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.

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