An electric toothbrush

Abstract

The application discloses an electric toothbrush, which comprises a main machine and at least one brush head, the main machine is provided with a plurality of main machine conductive ports, and the brush head is provided with at least two brush head conductive ports corresponding to the main machine conductive ports; the inside of the main machine is provided with a main machine control panel electrically connected with each main machine conductive port respectively, and the inside of the brush head is provided with a brush head control assembly electrically connected with each brush head conductive port respectively; when the brush head is connected to the main machine, the brush head conductive ports are in contact with and electrically connected with the main machine conductive ports, so that a power-on loop is formed between the main machine control panel and the brush head control assembly, and the main machine control panel can identify the function of the brush head according to the power-on loop. The electric toothbrush can automatically identify the function of the brush head and is convenient to operate.

Description

Technical Field

[0001] This utility model relates to the field of toothbrush technology, and more specifically to an electric toothbrush. Background Technology

[0002] With the improvement of living standards, people are paying more and more attention to oral health. Electric toothbrushes are becoming increasingly popular due to their superior cleaning power, fast brushing speed, and effortless brushing. Electric toothbrushes generally consist of a main unit and replaceable brush heads, with different types of brush heads often having different functions. However, most traditional electric toothbrushes lack the function of automatically recognizing brush heads. After replacing the brush head, users must manually select the working mode, a complicated process that affects the user experience. Furthermore, existing brush heads with built-in heating or light functions use wireless power supply, which is prone to insufficient power, resulting in slow heating efficiency, low light intensity, and poor effectiveness. Although a few products on the market have the function of automatically recognizing brush heads, such as the electric toothbrush disclosed in Chinese Patent No. CN113349972B, which includes a main unit and a brush head; the main unit includes a main control chip and a Hall sensor connected to the main control chip, the Hall sensor being located near the brush head; a first type of brush head includes a permanent magnet located at the bottom, while a second type of brush head does not have a permanent magnet. While this existing technology can identify the type of brush head, it requires a Hall sensor to be installed in the host and a permanent magnet to be installed in the brush head, which is complex and costly. Furthermore, since it identifies brush heads based on whether they have permanent magnets, it can only identify two types of brush heads, thus limiting its application. Utility Model Content

[0003] In order to overcome the above-mentioned shortcomings of the prior art, this utility model provides an electric toothbrush that can automatically identify the brush head function and is easy to operate.

[0004] The technical solution adopted by this utility model to solve its technical problem is: an electric toothbrush, the electric toothbrush includes a main unit and at least one brush head, the main unit is provided with a plurality of main unit conductive ports, and the brush head is provided with at least two brush head conductive ports corresponding to the main unit conductive ports;

[0005] The main unit has a main unit control board that is electrically connected to each of the main unit's conductive ports, and the brush head has a brush head control component that is electrically connected to each of the brush head's conductive ports.

[0006] When the brush head is connected to the host, the conductive port of the brush head contacts and is electrically connected to the conductive port of the host, so that a power circuit is formed between the host control board and the brush head control component. The host control board identifies the function of the brush head based on the power circuit.

[0007] This technical solution provides an electric toothbrush with multiple conductive ports on the main unit and corresponding conductive ports on the brush head. When the brush head is assembled onto the main unit, the conductive ports on the main unit and the conductive ports on the brush head become physically connected, forming a power circuit between the brush head control component inside the brush head and the main unit control board inside the main unit. The main unit control board can automatically identify the function of the brush head based on the power circuit and automatically activate the corresponding working mode, thus eliminating the need for manual selection of the working mode, simplifying the operation process and making it more convenient. At the same time, the main unit can directly supply power to the heating and lighting functions of the brush head through the conductive ports, providing higher power to the brush head, thereby improving the heating speed and light intensity of the brush head and enhancing the lighting effect. In addition, the above-mentioned electric toothbrush can automatically identify various brush heads with different functions, has a simple structure, and is low in cost.

[0008] In a preferred embodiment, the brush head includes a brush head body, a light-transmitting crystal, a brush head control assembly, a brush head cover, and a brush head support.

[0009] The brush head body has a light-transmitting window in the middle of the bristle section, and a light-transmitting crystal is sealed on the light-transmitting window; the brush head cover is sealed on the back of the brush head body; the brush head control assembly is located in the sealed cavity between the brush head body and the brush head cover; the brush head bracket is located at the bottom of the brush head body for connecting to the host, and the bottom of the brush head bracket has a through hole for exposing the conductive port of the brush head.

[0010] This technology involves creating a light-transmitting window in the middle of the bristles on the brush head body, allowing concentrated light to be emitted through a translucent crystal, without being blocked by the bristles, resulting in better lighting effects. Furthermore, the brush head has a sealed cavity inside to house the brush head control components, which effectively prevents water and moisture damage, thereby extending the product's lifespan.

[0011] In a preferred embodiment, the brush head control assembly includes a functional module and an electrical connection module, the functional module being electrically connected to the electrical connection module; the functional module is located in a sealed cavity behind the bristle section and is used to realize the heating and / or light irradiation functions of the brush head; each brush head conductive port is located on the electrical connection module, and the electrical connection module is located on the brush head support.

[0012] This technology enables the brush head to heat up and / or illuminate through a functional module located behind the bristles. At the same time, a power connection module with a conductive port on the brush head is located on the brush head bracket, which is structurally stable and facilitates connection with the host.

[0013] In a preferred embodiment, the power connection module is a U-shaped piece, with both ends of the U-shaped piece passing through two limiting holes on the rear side of the brush head bracket and mounted on the brush head bracket.

[0014] This technology uses a U-shaped piece as the power connection module, which is fixedly installed on the brush head bracket through the limiting hole at the rear of the brush head bracket. It is easy to install and has a stable structure.

[0015] In a preferred embodiment, the light-transmitting crystal is a semi-circular crystal that protrudes from the front.

[0016] In this technology, the light-transmitting crystal can be a transparent crystal, which is a semi-circular crystal with a protruding front, allowing light to be focused and directly irradiated onto human teeth, greatly improving the light intensity and resulting in better effects.

[0017] In a preferred embodiment, the main unit includes a housing, a bottom cover assembly, and a mechanism assembly. The bottom cover assembly is installed at the bottom of the housing, and the mechanism assembly is located within the cavity formed by the housing and the bottom cover assembly. The mechanism assembly includes conductive components, a motor, a battery, a main unit control board, and a mechanism support. The conductive components are electrically connected to the main unit control board, and the conductive components are provided with multiple conductive terminals. The conductive terminals extend out of the top surface of the housing to form conductive ports of the main unit. The main unit control board is electrically connected to the motor and the battery, respectively, and the battery is electrically connected to the motor.

[0018] In this technology, the movement assembly is located in the cavity formed by the outer shell and the bottom cover assembly, and the conductive terminals on the conductive parts form the conductive port of the main unit. The structure is simple and the cost is low.

[0019] In a preferred embodiment, a first elastomer is provided between the housing and the motor for sealing, thereby achieving a sealing effect and ensuring the waterproof performance of the main unit; the conductive components, the first elastomer, the motor, the battery, and the main unit control board are all mounted on the core support, which facilitates installation and disassembly and makes the structure more stable.

[0020] In a preferred embodiment, the bottom cover assembly includes a bottom cover and a second elastomer. The bottom cover is installed at the bottom of the housing, and the second elastomer is disposed between the bottom cover and the housing to provide a sealing effect and ensure the waterproof performance of the main unit.

[0021] In a preferred embodiment, the conductive components are sealed to the housing to ensure the waterproof performance of the host unit.

[0022] In a preferred embodiment, the brush head includes at least one of a whitening brush head, a cleaning brush head, and a sensitive brush head, which is easy to replace and can perform a variety of different functions.

[0023] As can be seen from the above technical solution, compared with the prior art, the beneficial effects of this utility model are as follows: The electric toothbrush provided by this utility model has multiple host conductive ports on the host and corresponding brush head conductive ports on the brush head. When the brush head is assembled on the host, the host conductive ports and the brush head conductive ports are physically connected to conduct electricity, so that the brush head control component in the brush head and the host control board in the host form an electrical circuit. The host control board can automatically identify the function of the brush head according to the electrical circuit and automatically start the corresponding working mode, thereby eliminating the need to manually select the working mode, simplifying the operation process and making it more convenient to operate.

[0024] Meanwhile, the host can directly supply power to the brush head's heating and lighting functions through the host's conductive port. Since the power is supplied directly through physical contact connection, the power supply is large, which can provide higher power to the brush head, thereby improving the brush head's heating speed and light intensity, and enhancing the lighting effect.

[0025] In addition, the electric toothbrush described above utilizes the power circuit formed by the contact connection between the conductive port of the main unit and the conductive port of the brush head. While providing power, it can automatically identify various brush heads with different functions. The structure is simple and the cost is low.

[0026] In addition, other advantages of this invention will be set forth in the description which follows, in part will be obvious from the description, or may be learned by practice of this invention. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the structure of the brush head of this utility model;

[0029] Figure 2 This is a bottom view of the brush head of this utility model;

[0030] Figure 3 This is a schematic diagram of the structure of the host computer of this utility model;

[0031] Figure 4 This is a top view of the main unit of this utility model;

[0032] Figure 5 This is a cross-sectional view of the electric toothbrush of this utility model;

[0033] Figure 6 This is an exploded view of the brush head of this utility model;

[0034] Figure 7 This is an exploded view of the main unit of this utility model;

[0035] Explanation of reference numerals in the attached drawings: 1. Brush head; 11. Brush head body; 12. Transparent crystal; 13. Brush head control assembly; 131. Functional module; 132. Power connection module; 14. Brush head cover; 15. Brush head bracket; 100. Brush head conductive port; 101. First brush head conductive port; 102. Second brush head conductive port; 103. Third brush head conductive port; 104. Fourth brush head conductive port; 2. Main unit; 21. Outer shell; 210. Mode display area; 22. Bottom cover assembly; 221. Bottom cover; 222. Second elastic body; 23. Mechanism assembly; 231. Conductive component; 232. First elastic body; 233. Motor; 234. Battery; 235. Main unit control board; 236. Mechanism bracket; 200. Main unit conductive port; 201. First main unit conductive port; 202. Second main unit conductive port; 203. Third main unit conductive port; 204. Fourth main unit conductive port. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0037] In the description of this utility model, it should be understood that the terms "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0038] Reference Figure 1-7 This invention describes an electric toothbrush according to an embodiment of the present invention.

[0039] In one embodiment, such as Figure 1-7As shown, an electric toothbrush includes a main unit 2 and at least one brush head 1. The main unit 2 is provided with a plurality of main unit conductive ports 200, and the brush head 1 is provided with at least two brush head conductive ports 100 corresponding to the main unit conductive ports 200.

[0040] The host 2 has a host control board 235 that is electrically connected to each host conductive port 200, and the brush head 1 has a brush head control component 13 that is electrically connected to each brush head conductive port 100.

[0041] When the brush head 1 is connected to the host 2, the conductive port 100 of the brush head contacts and is electrically connected to the conductive port 200 of the host, so that a power circuit is formed between the host control board 235 and the brush head control component 13, and the host control board 235 identifies the function of the brush head 1 according to the power circuit.

[0042] The brush head 1 can be a whitening brush head, a cleaning brush head, or other brush heads with different functions; the number of brush head conductive ports 100 and main unit conductive ports 200 can be at least 3, 4, or more; the main unit conductive port 200 is located on the top of the main unit 2, and the brush head conductive port 100 is located on the bottom of the brush head 1 and is correspondingly set to the main unit conductive port 200; when the brush head 1 is assembled and connected to the main unit 2, the brush head conductive port 100 and the main unit conductive port 200 are physically contacted and electrically connected, and the main unit control board 235 and the brush head control component 13 form a power circuit.

[0043] Taking a host conductive port 200 and a number of four host conductive ports 200 as an example, the host conductive port 200 includes a first host conductive port 201, a second host conductive port 202, a third host conductive port 203 and a fourth host conductive port 204, and the brush head conductive port 100 may include a first brush head conductive port 101, a second brush head conductive port 102, a third brush head conductive port 103 and a fourth brush head conductive port 104; the above-mentioned electric toothbrush can identify the function of the brush head 1 by using the power circuit formed by the brush head control component 13 inside the brush head 1 and the host control board 235 inside the host 2.

[0044] For example, the whitening brush head uses blue light to assist in teeth whitening, and can be set to have the first brush head conductive port 101 and the second brush head conductive port 102 powered on, while the other brush head conductive ports 100 are not powered on; the cleaning brush head uses heating and red light functions to assist in cleaning, and can be set to have the first brush head conductive port 101, the second brush head conductive port 102, and the third brush head conductive port 103 powered on, while the other brush head conductive ports 100 are not powered on; since the functions of the brush heads 1 are different, the conductive ports 100 that can be powered on are also different. Therefore, when brush heads 1 with different functions are installed on the host 2, the host 2 can identify the function of the brush head 1 by identifying the power supply line of the host conductive port 200.

[0045] The electric toothbrush described above has multiple host conductive ports 200 on the main unit 2 and corresponding brush head conductive ports 100 on the brush head 1. When the brush head 1 is assembled onto the main unit 2, the host conductive ports 200 and the brush head conductive ports 100 are physically connected and energized, so that the brush head control component 13 in the brush head 1 and the host control board 235 in the main unit 2 form an energizing circuit. The host control board 235 can automatically identify the function of the brush head 1 according to the energizing circuit and automatically start the corresponding working mode, thus eliminating the need to manually select the working mode, simplifying the operation process and making it more convenient to operate.

[0046] Meanwhile, the host 2 can directly supply power to the brush head 1 for its heating, light, and other functions through the host conductive port 200. Since the power is supplied directly through physical contact connection, the power supply is large and can provide higher power to the brush head 1, thereby improving the heating speed and light intensity of the brush head 1 and enhancing the light effect.

[0047] Furthermore, the electric toothbrush described above utilizes the power circuit formed by the contact connection between the conductive port 200 of the main unit and the conductive port 100 of the brush head. While supplying power, it can automatically identify various brush heads 1 with different functions. The structure is simple and the cost is low.

[0048] In this embodiment, the brush head 1 includes a brush head body 11, a light-transmitting crystal 12, a brush head control component 13, a brush head cover plate 14, and a brush head bracket 15. A light-transmitting window is provided in the middle of the bristle portion of the brush head body 11, and the light-transmitting crystal 12 is sealed and installed on the light-transmitting window. The brush head cover plate 14 is sealed and covered on the back of the brush head body 11. The brush head control component 13 is located in the sealed cavity between the brush head body 11 and the brush head cover plate 14. The brush head bracket 15 is located at the bottom of the brush head body 11 and is used to connect to the host 2. The bottom of the brush head bracket 15 is provided with a through hole for the brush head conductive port 100 to be exposed.

[0049] The light-transmitting window is used for light illumination. The light-transmitting crystal 12 can be sealed together with the light-transmitting window through ultrasonic process or secondary injection molding process to achieve a sealing effect. The brush head cover plate 14 and the brush head body 11 can be assembled together through ultrasonic process or sealant application process to achieve a sealing effect. Therefore, a sealed cavity is formed inside the brush head 1 to prevent external dust and other objects from entering. The brush head control component 13 is placed inside the sealed cavity.

[0050] The electric toothbrush described above has a light-transmitting window in the middle of the bristles of the brush head body 11, through which light is concentrated by the light-transmitting crystal 12, without being blocked by the bristles, resulting in better light effect; and the inside of the brush head 1 forms a sealed cavity to house the brush head control component 13, which can effectively prevent water and moisture, thereby extending the product's service life.

[0051] In this embodiment, the brush head control component 13 includes a functional module 131 and an electrical connection module 132. The functional module 131 is electrically connected to the electrical connection module 132. The functional module 131 is located in a sealed cavity behind the bristle section and is used to realize the heating and / or light irradiation functions of the brush head 1. Each brush head conductive port 100 is located on the electrical connection module 132, and the electrical connection module 132 is located on the brush head support 15.

[0052] The functional module 131 may include a heating element and a red light, in which case the brush head 1 is a cleaning brush head; the functional module 131 may also include a blue light, in which case the brush head 1 is a whitening brush head.

[0053] The above embodiment enables the brush head 1 to heat up and / or illuminate by the functional module 131 located behind the bristles. Meanwhile, the power connection module 132 with the brush head conductive port 100 is located on the brush head bracket 15, which is structurally stable and facilitates contact and connection with the host 2.

[0054] In this embodiment, the power connection module 132 is a U-shaped piece, and the two ends of the U-shaped piece pass through the two limiting holes on the rear side of the brush head bracket 15 and are installed on the brush head bracket 15.

[0055] The above embodiment uses a U-shaped piece as the power connection module 132, which is fixedly installed on the brush head bracket 15 through the limiting hole at the rear of the brush head bracket 15. The installation is convenient and the structure is stable.

[0056] In this embodiment, the light-transmitting crystal 12 is a semi-circular crystal that protrudes from the front.

[0057] Among them, the light-transmitting crystal 12 can be a transparent crystal. The light-transmitting crystal 12 is a semi-circular crystal with a protruding front, which can concentrate light to directly irradiate human teeth, greatly improving the light intensity and the effect.

[0058] In this embodiment, the main unit 2 includes a housing 21, a bottom cover assembly 22, and a mechanism assembly 23. The bottom cover assembly 22 is installed at the bottom of the housing 21, and the mechanism assembly 23 is disposed in the cavity formed by the housing 21 and the bottom cover assembly 22. The mechanism assembly 23 includes a conductive component 231, a motor 233, a battery 234, a main unit control board 235, and a mechanism support 236. The conductive component 231 is electrically connected to the main unit control board 235. The conductive component 231 is provided with multiple conductive terminals, which extend out of the top surface of the housing 21 to form a main unit conductive port 200. The main unit control board 235 is electrically connected to the motor 233 and the battery 234, respectively, and the battery 234 is electrically connected to the motor 233.

[0059] The conductive component 231 is connected to the main control board 235 via a wire, and the battery 234 is used to power the motor 233 and the main control board 235. The main control board 235 can be equipped with multiple working modes, and can play the corresponding working mode according to the function of the identified brush head 1.

[0060] In practice, the output shaft of the motor 233 extends out of the top surface of the housing 21 and is connected to the brush head bracket 15 to drive the brush head 1 to vibrate; the outer wall of the housing 21 is also provided with a mode display area 210, which is electrically connected to the host control board 235 for users to manually control the mode.

[0061] In the above embodiments, the mechanism assembly 23 is disposed in the cavity formed by the outer shell 21 and the bottom cover assembly 22, and forms the main unit conductive port 200 through the conductive terminals on the conductive component 231. The structure is simple and the cost is low.

[0062] In this embodiment, a first elastic body 232 for sealing is provided between the outer shell 21 and the motor 233, which has a sealing effect and ensures the waterproof performance of the main unit 2; the conductive component 231, the first elastic body 232, the motor 233, the battery 234 and the main unit control board 235 are all installed on the core bracket 236, which facilitates installation and disassembly and makes the structure more stable.

[0063] In this embodiment, the bottom cover assembly 22 includes a bottom cover 221 and a second elastic body 222. The bottom cover 221 is installed at the bottom of the outer shell 21, and the second elastic body 222 is disposed between the bottom cover 221 and the outer shell 21 to achieve a sealing effect and ensure the waterproof performance of the host 2.

[0064] In this embodiment, the conductive component 231 and the outer casing 21 are sealed together to ensure the waterproof performance of the host 2.

[0065] In practice, after the movement assembly 23 is installed into the outer shell 21, the conductive component 231 and the outer shell 21 are assembled to achieve a sealing effect through a process such as applying sealant, secondary injection molding, or adding an elastomer. Then, the bottom cover assembly 22 is assembled into the bottom of the outer shell 21. At this time, a sealed space is formed inside the outer shell 21, which can prevent external media from entering.

[0066] In this embodiment, the brush head 1 includes at least one of a whitening brush head, a cleaning brush head, and a sensitive brush head, which is easy to replace and can achieve a variety of different functions.

[0067] In practice, the brush head 1 of the electric toothbrush can be divided into whitening brush head, cleaning brush head or sensitive brush head according to different functions. The bottom of the brush head 1 with different functions can be provided with different numbers of brush head conductive ports 100.

[0068] Other components and operations of the electric toothbrush according to the embodiments of this utility model are known to those skilled in the art and will not be described in detail here.

[0069] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0070] In the description of this specification, references to the terms "embodiment," "specific embodiment," "example," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example that is included in at least one embodiment or example of the present invention.

[0071] In this specification, the illustrative expressions of the terms used do not necessarily refer to the same embodiments or examples. Moreover, the specific features, structures, materials, or characteristics described may be combined with each other in any suitable manner in one or more embodiments or examples without interference or contradiction.

Claims

1. An electric toothbrush, characterized in that: The electric toothbrush includes a main unit (2) and at least one brush head (1). The main unit (2) is provided with a plurality of main unit conductive ports (200), and the brush head (1) is provided with at least two brush head conductive ports (100) corresponding to the main unit conductive ports (200). The host (2) is provided with a host control board (235) that is electrically connected to each of the host conductive ports (200), and the brush head (1) is provided with a brush head control component (13) that is electrically connected to each of the brush head conductive ports (100). When the brush head (1) is connected to the host (2), the conductive port (100) of the brush head contacts and is electrically connected to the conductive port (200) of the host, so that a power circuit is formed between the host control board (235) and the brush head control component (13), and the host control board (235) identifies the function of the brush head (1) according to the power circuit.

2. An electric toothbrush according to claim 1, characterized in that: The brush head (1) includes a brush head body (11), a light-transmitting crystal (12), the brush head control component (13), a brush head cover plate (14), and a brush head bracket (15); The brush head body (11) has a light-transmitting window in the middle of the bristle section, and the light-transmitting crystal (12) is sealed and installed on the light-transmitting window; the brush head cover plate (14) is sealed and covered on the back of the brush head body (11); the brush head control component (13) is located in the sealed cavity between the brush head body (11) and the brush head cover plate (14); the brush head bracket (15) is located at the bottom of the brush head body (11) and is used to connect with the host (2), and the bottom of the brush head bracket (15) has a through hole for the brush head conductive port (100) to be exposed.

3. An electric toothbrush according to claim 2, characterized in that: The brush head control component (13) includes a functional module (131) and a power connection module (132), wherein the functional module (131) is electrically connected to the power connection module (132); The functional module (131) is located in the sealed cavity behind the bristle part and is used to realize the heating and / or light irradiation function of the brush head (1); each of the brush head conductive ports (100) is located on the power connection module (132), and the power connection module (132) is located on the brush head bracket (15).

4. An electric toothbrush according to claim 3, characterized in that: The power connection module (132) is a U-shaped piece, and the two ends of the U-shaped piece pass through the two limiting holes on the back side of the brush head bracket (15) and are installed on the brush head bracket (15).

5. An electric toothbrush according to claim 2, characterized in that: The light-transmitting crystal (12) is a semi-circular crystal with a protruding front.

6. An electric toothbrush according to any one of claims 1 to 5, characterized in that: The main unit (2) includes a housing (21), a bottom cover assembly (22), and a mechanism assembly (23). The bottom cover assembly (22) is installed at the bottom of the housing (21), and the mechanism assembly (23) is disposed in the cavity formed by the housing (21) and the bottom cover assembly (22). The mechanism assembly (23) includes a conductive component (231), a motor (233), a battery (234), the main control board (235), and a mechanism support (236). The conductive component (231) is electrically connected to the main control board (235). The conductive component (231) is provided with multiple conductive terminals. The conductive terminals extend out of the top surface of the outer casing (21) to form the main conductive port (200). The main control board (235) is electrically connected to the motor (233) and the battery (234) respectively. The battery (234) is electrically connected to the motor (233).

7. An electric toothbrush according to claim 6, characterized in that: A first elastic body (232) for sealing is provided between the outer casing (21) and the motor (233); The conductive component (231), the first elastic body (232), the motor (233), the battery (234), and the main control board (235) are all mounted on the mechanism bracket (236).

8. An electric toothbrush according to claim 7, characterized in that: The bottom cover assembly (22) includes a bottom cover (221) and a second elastic body (222). The bottom cover (221) is installed at the bottom of the outer shell (21), and the second elastic body (222) is disposed between the bottom cover (221) and the outer shell (21).

9. An electric toothbrush according to claim 6, characterized in that: The conductive component (231) and the outer casing (21) are sealed together.

10. An electric toothbrush according to claim 1, characterized in that: The brush head (1) includes at least one of a whitening brush head, a cleaning brush head, and a sensitive brush head.

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