CN117281647A - Electric toothbrush - Google Patents

Abstract

The invention discloses an electric toothbrush, and belongs to the technical field of toothbrushes. The electric toothbrush includes a handle assembly, a horn, a second end cap, and an acoustic membrane, the handle assembly including a handle housing and a first end cap. The loudspeaker is arranged on the first end cover, and the first sound outlet hole is formed in the first end cover. The second end cover is detachably connected to the handle assembly, and a second sound outlet hole is formed in the second end cover. The coverage area of the sound-transmitting film is larger than the setting area of the first sound outlet, and the coverage area of the sound-transmitting film is larger than the setting area of the second sound outlet. The first end cover is provided with an acoustic membrane, or the first end cover and the second end cover are both provided with acoustic membranes. The electric toothbrush can reduce the probability of the mesh on the loudspeaker net being blocked by toothpaste in the prior art, and even if moisture enters the toothbrush in the use process of a user, the moisture can be conveniently cleaned out, so that the sound effect of the loudspeaker is ensured.

Description

an electric toothbrush

Technical field

The present invention relates to the technical field of toothbrushes, and in particular to an electric toothbrush.

Background technique

As the number of users of electric toothbrushes increases, users have higher and higher functional requirements for electric toothbrushes. In order to provide sound feedback when the user uses the electric toothbrush, the electric toothbrush in the prior art is equipped with a speaker. The electric toothbrush can emit sound through the speaker to remind the user of the time and area for brushing teeth. For example, every 30 seconds, the speaker can make a sound to remind the user that they should switch the brushing area; every 2 minutes, the speaker can make a sound to remind the user that they should end brushing their teeth. The electric toothbrush equipped with a speaker can help users better grasp the brushing time through the sound feedback function, thereby improving the brushing effect.

There is an electric toothbrush in the prior art. The electric toothbrush includes a handle, a bottom cover structure arranged at the bottom of the handle, a horn structure and an inner bracket. Among them, the bottom cover structure and the bottom of the handle form an accommodating cavity, and the horn structure and the inner bracket are accommodated inside the accommodating cavity. The bottom cover structure includes a bottom cover body, a first screw hole opened in the center of the bottom cover body, and a speaker sound hole opened in the bottom cover body. After the screws are locked in the first screw hole, the bottom cover body is fixedly connected to the speaker structure. . The speaker sound hole is used to emit sound from the speaker structure to ensure the volume of the sound from the speaker structure. The speaker structure includes a speaker body and a speaker net. One end face of the speaker body is fixed on the inner bracket, and the other end face of the speaker body is fixedly connected to one end face of the bottom cover body. The screws are locked into the speaker body from the other end of the bottom cover body. The speaker mesh fits outside the screws and hides the screws, achieving a beautiful appearance.

However, when the user uses the above-mentioned electric toothbrush, moisture easily enters the inside of the accommodation cavity through the mesh on the speaker net and the speaker sound hole. Even if the speaker vibrates after playing sound for a long time, it is difficult to remove the moisture inside the accommodation cavity. After cleaning, if moisture remains in the speaker for too long, it will cause damage to the speaker. When the speaker net is arranged outside the speaker sound hole, it can prevent moisture and dust from entering the inside of the speaker sound hole. However, when the user uses the above-mentioned electric toothbrush, there is a possibility that the toothpaste will block the mesh of the speaker net. When toothpaste blocks the mesh of the speaker net, it will affect the sound effect of the speaker. In addition, because the mesh on the speaker mesh is small, it is difficult to clean the toothpaste blocked inside the mesh on the speaker mesh and to clear the mesh on the speaker mesh again.

Therefore, there is an urgent need to study an electric toothbrush to solve the above problems.

Contents of the invention

The object of the present invention is to provide an electric toothbrush that can reduce the probability that the mesh of the speaker mesh in the prior art is blocked by toothpaste. Even if moisture enters the inside of the toothbrush during use by the user, it can be easily cleaned out, thereby ensuring the effectiveness of the speaker. sound effects.

To achieve this goal, the present invention adopts the following technical solutions:

An electric toothbrush including:

Handle assembly, the handle assembly includes:

A handle shell, a receiving cavity is provided in the handle shell, and an opening is provided at one end of the receiving cavity;

A first end cover, the first end cover is arranged inside the accommodation cavity, and an accommodation groove is provided on the side of the first end cover facing away from the opening;

Speaker, the speaker is arranged inside the accommodation groove, the first end cover is provided with a first sound outlet, and the first sound outlet is connected with the accommodation groove;

a second end cover, the second end cover is detachably sealed at the opening; a second sound outlet is provided on the second end cover; the second sound outlet is connected to the first sound outlet; The sound holes are connected;

A sound-transmitting membrane, the coverage area of the sound-transmitting membrane is larger than the installation area of the first sound outlet, and the coverage area of the sound-transmissive membrane is larger than the installation area of the second sound outlet;

The first end cap is provided with the sound-transmitting membrane, or,

The sound-transmitting membrane is provided on both the first end cover and the second end cover.

Preferably, a first receiving groove is provided on a side of the first end cap close to the second end cap, the first receiving groove is connected with the first sound outlet, and the sound-permeable membrane is located in the Inside the first receiving tank.

Preferably, a second receiving groove is provided on a side of the second end cap close to the first end cap, the second receiving groove is connected with the second sound outlet, and the sound-transmitting membrane is located in the Inside the second holding tank.

Preferably, the groove depth of the first accommodation groove is greater than the thickness of the sound-transmitting membrane, the groove depth of the second accommodation groove is greater than the thickness of the sound-transmitting membrane, and the second end cap is connected to the handle. When assembled, the notch of the first accommodating groove and the notch of the second accommodating groove are arranged oppositely to form a buffer space.

Preferably, the second end cap includes:

A first connection part, the first connection part is located on a side of the second end cap facing the first end cap, the first connection part is set to a soft material;

a second connection part, the second connection part is connected to the first connection part, the second connection part is on a side of the second end cap away from the first end cap, the second connection part The parts are made of hard material.

Preferably, the groove depth of the accommodation cavity is greater than the thickness of the first end cover. When the second end cover is connected to the handle assembly, the first connection part is embedded inside the accommodation cavity. , the second connecting part is in contact with the handle housing;

A connecting rib is provided on the peripheral side of the first connecting part. When the first connecting part is inside the accommodating cavity, the connecting rib is squeezed by the groove side wall of the accommodating cavity.

Preferably, the handle shell is provided with a detachment groove at the contact point between the handle shell and the second connection part, and the side of the detachment groove away from the second connection part is higher than the side close to the second connection part. One side of the connection.

Preferably, the electric toothbrush further includes a flexible connector, one end of the flexible connector is connected to the second end cap, and the other end of the flexible connector is connected to the handle assembly;

When the second end cap and the handle assembly are in a disassembled state, the flexible connection member can maintain the connection between the second end cap and the handle assembly.

Preferably, the electric toothbrush further includes a microphone, and the microphone is disposed inside the accommodating groove.

Preferably, the accommodation cavity is arranged along the axial direction of the handle housing, and the first end cover, the horn, the sound-transmitting membrane and the second end cover are all along the axial direction of the handle housing. settings; or

The accommodation cavity is arranged along the radial direction of the handle housing, and the first end cover, the horn, the sound-transmitting membrane and the second end cover are all arranged along the radial direction of the handle housing.

Beneficial effects of the present invention:

In the electric toothbrush provided by the present invention, the horn is arranged inside the accommodating groove, and then a second end cover is arranged on the end of the first end cover away from the handle housing. The arrangement of the second end cover can adjust the first end cover on the first end cover. The sound hole forms a certain degree of protection, and a second sound hole is opened on the second end cover to ensure smooth sound output from the speaker. In addition, the second end cap and the handle assembly are detachably connected. When the user uses the electric toothbrush, even if the electric toothbrush comes into contact with moisture, the moisture needs to first pass through the second sound hole on the second end cap before the electric toothbrush can be released. It reaches the first sound hole on the first end cover and then reaches the speaker. That is, the settings of the second end cover and the second sound hole can make it more difficult for water to reach the first end cover and the first sound hole. The moisture is first retained inside the second sound hole. After the user uses the electric toothbrush once, the second end cover can be disassembled to clean the moisture in the second sound hole and ensure the second sound hole in a timely manner. Clearing the sound hole.

At the same time, the electric toothbrush provided by the present invention is also provided with a sound-transmitting membrane, and the sound-transmitting membrane is arranged on the first end cover, or the sound-transmitting membrane is arranged on the first end cover and the second end cover. The sound-transmitting membrane can cover the first sound hole and the second sound hole. The sound-transmitting membrane can block the first sound hole and the second sound hole while ensuring the smooth transmission of the speaker sound. It has a certain degree of waterproofing effect. As for the setting position of the sound-transmissive membrane, on the one hand, locating the sound-transmissive membrane on the first end cover can provide certain protection to the sound-transmissive membrane and prevent toothpaste from contacting the sound-transmissive membrane, which may cause the toothpaste to block the sound-transmissive membrane; On the other hand, the sound-transmitting membrane can reduce the probability of moisture flowing from the second sound hole to the first sound hole, allowing the moisture to remain inside the second sound hole, making it easier for the user to remove the moisture after using the electric toothbrush once. Clean up.

Description of drawings

Figure 1 is a front view of the electric toothbrush provided by the present invention;

Figure 2 is a cross-sectional view of the electric toothbrush provided by the present invention;

Figure 3 is a partial enlarged view of part A in Figure 2;

Figure 4 is a partial isometric view of the electric toothbrush provided by the present invention.

In the picture:

1. Handle assembly; 11. Handle shell; 111. Accommodation cavity; 112. Disassembly slot; 12. First end cover; 121. Accommodation slot; 122. First sound hole; 123. First accommodation slot;

2. Speaker;

3. Second end cover; 31. Second sound hole; 32. First connection part; 321. Second receiving groove; 322. Connection rib; 33. Second connection part; 34. Buffer space;

4. Sound-transparent membrane;

5. Flexible connectors.

Detailed ways

The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention and are not to be understood as limiting the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description. It does not indicate or imply that the device or element referred to must have a specific orientation or a specific orientation. construction and operation, and therefore should not be construed as limitations of the invention. In addition, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions.

Unless otherwise expressly stipulated and limited, the terms "installation", "connection", "connection" and "fixing" should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or a detachable connection. It can be an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two components or an interaction between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Unless otherwise expressly provided and limited, "above" or "below" a first feature on a second feature may include the first feature and the second feature being in direct contact, or it may include that the first feature and the second feature are not in direct contact. Rather, it is through additional characteristic contact between them. Furthermore, the terms "above", "above" and "above" a first feature on a second feature include the first feature being directly above and diagonally above the second feature, or simply mean that the first feature is higher in level than the second feature. “Below”, “under” and “under” the first feature is the second feature includes the first feature being directly below and diagonally below the second feature, or simply means that the first feature is less horizontally than the second feature.

The technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific implementation modes.

As shown in Figures 1 to 4, the present invention provides an electric toothbrush that can reduce the probability that the mesh of the speaker mesh in the prior art is blocked by toothpaste. Even if moisture enters the inside of the toothbrush during use, it can be easily cleaned. This ensures the sound effect of the speaker.

Referring to Figures 1, 2 and 3, the electric toothbrush includes a handle assembly 1, a horn 2, a second end cap 3 and a sound-transmitting membrane 4. The handle assembly 1 includes a handle shell 11 and a first end cover 12. The handle shell 11 is provided with an accommodating cavity 111, and one end of the accommodating cavity 111 is provided with an opening. The first end cover 12 is disposed inside the accommodating cavity 111, and an accommodating groove 121 is disposed on the side of the first end cover 12 facing away from the opening. The speaker 2 is arranged inside the accommodating groove 121. The first end cover 12 is provided with a first sound hole 122. The first sound hole 122 is connected with the accommodating groove 121. The first sound hole 122 is used for the speaker 2 to emit sound. . The second end cover 3 can detachably cover the opening. The second end cover 3 is provided with a second sound hole 31 . The second sound hole 31 is connected with the first sound hole 122 . The second sound hole 31 Used for speaker 2 to produce sound. The coverage area of the sound-transmitting membrane 4 is larger than the installation area of the first sound hole 122 , and the coverage area of the sound-transmissive membrane 4 is larger than the installation area of the second sound hole 31 . The sound-transmitting membrane 4 is arranged on the first end cover 12 , or the sound-transmitting membrane 4 is arranged on the first end cover 12 and the second end cover 3 .

In the electric toothbrush provided by the present invention, the horn 2 is arranged inside the accommodating groove 121, and then a second end cover 3 is arranged on the end of the first end cover 12 away from the handle housing 11. The arrangement of the second end cover 3 can effectively The first sound hole 122 on the end cover 12 forms a certain degree of protection, and the second sound hole 31 is opened on the second end cover 3 to ensure the smooth sound output of the speaker 2. In addition, the second end cap 3 is detachably connected to the handle assembly 1. When the user uses the electric toothbrush, even if the electric toothbrush comes into contact with moisture, the moisture needs to first pass through the second sound outlet on the second end cap 3. hole 31 to reach the first sound hole 122 on the first end cover 12 and then to the speaker 2, that is, the arrangement of the second end cover 3 and the second sound hole 31 can increase the moisture reaching the first end cover 12 and the difficulty of the first sound hole 122, so that the moisture first remains inside the second sound hole 31. After the user uses the electric toothbrush once, he can disassemble the second end cover 3, thereby cleaning the second sound hole 31. The water in the hole 31 is cleaned to ensure that the second sound hole 31 is unblocked in a timely manner.

At the same time, in the electric toothbrush provided by the present invention, a sound-transmitting membrane 4 is also provided. The sound-transmitting membrane 4 is arranged on the first end cover 12, or the sound-transmitting membrane 4 is arranged on the first end cover 12 and the second end cover. 3 on. The sound-transmitting membrane 4 is arranged to cover the first sound-output hole 122 and the second sound-output hole 31. The sound-transparent membrane 4 ensures smooth transmission of sound to the speaker 2 and at the same time covers the first sound-output hole 122 and the second sound-output hole 31. The hole 31 is blocked, which can provide a certain degree of waterproofing. Regarding the placement position of the sound-transmitting membrane 4, on the one hand, the sound-transmitting membrane 4 is arranged on the first end cover, which can provide certain protection to the sound-transmitting membrane 4 and prevent toothpaste from contacting the sound-transmitting membrane 4, which may cause the toothpaste to damage the sound-transmitting membrane 4. 4 is blocked; on the other hand, the setting of the sound-transmitting membrane 4 can reduce the probability of moisture flowing from the second sound hole 31 to the first sound hole 122, so that the moisture remains inside the second sound hole 31, which is convenient for users. Clean up the water after using your electric toothbrush.

In this embodiment, the horn 2 is fixedly connected to the groove wall of the accommodating groove 121 on the first end cover 12 . Specifically, the speaker 2 can be connected to the wall of the accommodating groove 121 by glue dispensing or screw fastening. Or the horn 2 and the groove wall of the accommodating groove 121 are directly connected with an interference fit.

The electric toothbrush in this embodiment also includes a brush head, and the handle assembly 1 also includes buttons, a motor, a battery, a motherboard, a bracket, and a charging interface. The user controls the work of the motor to vibrate the brush head by operating the buttons, thereby achieving The action of brushing your teeth.

In this embodiment, in order to improve the position stability of the sound-transmitting membrane 4 on the first end cover 12 and ensure the reliability of the sound-transmitting membrane 4 covering the first sound outlet 122, in this embodiment, the first end cover 12 is A first receiving groove 123 is provided on the side of the cover 12 close to the second end cover. The first receiving groove 123 is connected with the first sound outlet 122 , and the sound-transmitting membrane 4 is located inside the first receiving groove 123 . When the sound-transmitting membrane 4 is inside the first accommodation groove 123, the peripheral side of the sound-transmitting membrane 4 and the groove wall of the first accommodation groove 123 are in contact with each other. The arrangement of the first accommodation groove 123 can improve the sound-transmitting membrane 4 in the first accommodation groove 123. Positional stability on end cap 12.

Similarly, in order to improve the position stability of the sound-transmitting membrane 4 on the second end cover 3 and ensure the reliability of the sound-transmitting membrane 4 covering the second sound hole 31, in this embodiment, the second end cover 3 faces A second accommodating groove 321 is provided on one side of the first end cover 12 . The second accommodating groove 321 is connected with the second sound outlet 31 , and the sound-transmitting membrane 4 is located inside the second accommodating groove 321 .

In this embodiment, the sound-transmitting membrane 4 is connected to the inside of the first accommodation groove 123 and the inside of the second accommodation groove 321 by dispensing glue. During the glue dispensing and gluing process of the sound-transmitting membrane 4, the first receiving groove 123 and the second receiving groove 321 can fix the position of the sound-transmitting membrane 4 during the glue dispensing process, which facilitates the dispensing of glue by the operator of the electric toothbrush. After the sound-transmitting membrane 4 is glued, since the glue exists inside the first accommodating groove 123 and the second accommodating groove 321, the groove side walls of the first accommodating groove 123 and the second accommodating groove 321 can protect the glue to a certain extent. , reduce the dispensing and air-drying speed, ensure the connection strength of the sound-transmitting membrane 4 inside the first accommodation groove 123 and the second accommodation groove 321 , thereby reducing the probability of moisture entering the first sound outlet 122 .

In this embodiment, the groove depth of the first accommodating groove 123 is greater than the thickness of the sound-transmitting membrane 4, and the groove depth of the second accommodating groove 321 is greater than the thickness of the sound-transmitting membrane 4. When the second end cover 3 is connected to the handle assembly 1, The notch of the first receiving groove 123 is opposite to the notch of the second receiving groove 321 to form a buffer space 34 . The formation of the buffer space 34 allows the moisture passing through the second sound hole 31 and the sound-transmitting membrane 4 to have a certain buffer space, and does not cause the moisture passing through the second sound hole 31 and the sound-transmitting membrane 4 to directly contact the other side. A sound-transmitting membrane 4 and the first sound hole 122 allow the user to directly clean the moisture in the buffer space 34 after using the electric toothbrush once and disassembling the second end cover 3 .

In this embodiment, the second end cap 3 includes a first connecting part 32 and a second connecting part 33. The first connecting part 32 is on a side of the second end cap 3 facing the first end cap 12. 32 is set for soft materials. Illustratively, the first connecting part 32 is made of rubber material, and the second connecting part 33 is connected to the first connecting part 32 . The second connecting part 33 is located on a side of the second end cover 3 away from the first end cover 12 . The two connecting parts 33 are made of hard material. Exemplarily, the second connecting portion 33 is made of hard plastic. Specifically, the above-mentioned second receiving groove 321 is provided on the first connecting part 32 . The first connection part 32 of soft material can facilitate the connection between the second end cap 3 and the handle assembly 1, and the second connection part 33 of hard material can facilitate the user's holding.

In this embodiment, the second end cap 3 is detachably connected to the handle housing 11 in the handle assembly 1 to open or cover the opening. Furthermore, the second end cover 3 is detachably connected to the handle shell 11 by plugging. When the user uses the electric toothbrush daily, the second end cap 3 is connected to the handle shell 11. When the user needs to clean up the water, the second end cap 3 is removed from the handle shell 11, and the second end cap 3 is connected to the handle shell 11. The moisture inside the second sound hole 31 is cleaned.

Specifically, the groove depth of the accommodation cavity 111 is greater than the thickness of the first end cover 12 . When the second end cover 3 is connected to the handle assembly 1 , the first connection part 32 is embedded inside the accommodation cavity 111 , and the second connection part 33 It is in contact with the handle shell 11 . A connecting rib 322 is provided on the peripheral side of the first connecting part 32 . When the first connecting part 32 is inside the accommodating cavity 111 , the connecting rib 322 is squeezed by the groove side wall of the accommodating cavity 111 . Since the first connecting part 32 is made of soft material, it is easily deformed when inserted into the accommodation cavity 111 , making it convenient for the user to disassemble and install at any time. The provision of the connecting rib 322 can enhance the extrusion force between the first connecting part 32 and the side wall of the accommodating cavity 111, thereby improving the connection stability between the first connecting part 32 and the accommodating cavity 111, thereby ensuring the second end cap. 3. Stability of connection with handle housing 11 assembly.

In order to facilitate the user to disassemble the second end cover 3 , the handle housing 11 is provided with a disassembly groove 112 at the contact point between the handle housing 11 and the second connection part 33 . The side of the disassembly groove 112 away from the second connection part 33 is higher than The side close to the second connecting portion 33 . During the process of disassembling the second end cover 3 , the force is applied from the side of the disassembly groove 112 away from the second connecting portion 33 , and the force is applied along the wall of the disassembly groove 112 in the direction of the second end cover 3 . Since the disassembly groove 112 The side away from the second connecting part 33 is higher than the side close to the second connecting part 33 . The second connecting part 33 protrudes from the disassembly groove 112 , and the user can easily disassemble the second end cap 3 . In addition, since the second connecting part 33 is made of hard material, the second connecting part 33 is stable in force, which further facilitates the user to disassemble the second end cover 3 .

Referring to FIG. 4 , in this embodiment, the electric toothbrush further includes a flexible connector 5 , one end of the flexible connector 5 is connected to the second end cap 3 , and the other end of the flexible connector 5 is connected to the handle assembly 1 . When the second end cap 3 and the handle assembly 1 are in a disassembled state, the flexible connector 5 can maintain the connection between the second end cap 3 and the handle assembly 1 . By way of example, the flexible connector 5 may be configured to connect a soft tape. The arrangement of the flexible connector 5 can ensure that the second end cap 3 and the handle assembly 1 remain connected when the two end caps and the handle assembly 1 are in a disassembled state, preventing the second end cap 3 from falling.

In this embodiment, in order to enable the electric toothbrush to realize interactive functions, the electric toothbrush further includes a microphone, and the microphone is disposed inside the accommodating groove 121 . By setting up a microphone, the electric toothbrush can realize voice interaction with the user. Using the built-in speech recognition technology of the electric toothbrush, the electric toothbrush can understand the user's verbal instructions and provide corresponding brushing modes or suggestions according to the user's needs. For example, users can switch to different brushing modes through voice commands, or ask about the battery status of the toothbrush, which can improve the user's experience and convenience. The microphone also needs to be waterproofed to a certain extent. If the microphone is placed inside the accommodating groove 121 , the waterproofing operation can be realized directly with the help of the second end cover 3 .

In this embodiment, there are two implementation methods for the opening direction of the accommodating cavity 111 . In the first embodiment, the accommodating cavity 111 is arranged along the axial direction of the handle housing 11 , and the first end cover 12 , the horn 2 , the sound-transmitting membrane 4 and the second end cover 3 are all arranged along the axial direction of the handle housing 11 . The second embodiment is that the accommodating cavity 111 is arranged along the radial direction of the handle shell 11 , and the first end cover 12 , the speaker 2 , the sound-transmitting membrane 4 and the second end cover 3 are all arranged along the radial direction of the handle shell 11 .

Obviously, the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. An exhaustive list of all implementations is neither necessary nor possible. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.

Claims (10)

1. An electric toothbrush, characterized in that it includes: Handle assembly (1), the handle assembly (1) includes: Handle shell (11), the handle shell (11) is provided with an accommodating cavity (111), and an opening is provided at one end of the accommodating cavity (111); A first end cover (12), the first end cover (12) is arranged inside the accommodation cavity (111), and a accommodation chamber is provided on the side of the first end cover (12) facing away from the opening. slot(121); Speaker (2), the speaker (2) is arranged inside the accommodation groove (121), the first end cover (12) is provided with a first sound outlet (122), the first sound outlet The hole (122) is connected with the accommodation groove (121); A second end cover (3). The second end cover (3) is detachably sealed at the opening. The second end cover (3) is provided with a second sound hole (31), so The second sound hole (31) is connected with the first sound hole (122); Sound-transmitting membrane (4), the coverage area of the sound-transmitting membrane (4) is larger than the installation area of the first sound outlet (122), and the coverage area of the sound-transmissive membrane (4) is larger than the second sound outlet hole (122). The installation area of the sound hole (31); The sound-transmitting membrane (4) is provided on the first end cover (12), or, The sound-transmitting membrane (4) is provided on both the first end cover (12) and the second end cover (3). 2. The electric toothbrush according to claim 1, characterized in that a first receiving groove (123) is provided on a side of the first end cap (12) close to the second end cap (3), and the The first receiving groove (123) is connected with the first sound outlet (122), and the sound-transmitting membrane (4) is located inside the first receiving groove (123). 3. The electric toothbrush according to claim 2, characterized in that a second receiving groove (321) is provided on the side of the second end cap (3) close to the first end cap (12), and the The second accommodation groove (321) is connected with the second sound outlet (31), and the sound-transmitting membrane (4) is located inside the second accommodation groove (321). 4. The electric toothbrush according to claim 3, characterized in that the depth of the first receiving groove (123) is greater than the thickness of the sound-transmitting membrane (4), and the depth of the second receiving groove (321) is greater than the thickness of the sound-transmitting membrane (4). The depth of the groove is greater than the thickness of the sound-transmitting membrane (4). When the second end cover (3) is connected to the handle assembly (1), the notch of the first receiving groove (123) and the third The slots of the two receiving grooves (321) are arranged oppositely to form a buffer space (34). 5. The electric toothbrush according to claim 1, characterized in that the second end cap (3) includes: A first connecting part (32) located on a side of the second end cap (3) facing the first end cap (12). The first connecting part (32) ) set to soft material; A second connection part (33), the second connection part (33) is connected to the first connection part (32), and the second connection part (33) is located in the second end cover (3) facing away from On one side of the first end cap (12), the second connecting portion (33) is made of hard material. 6. The electric toothbrush according to claim 5, characterized in that the groove depth of the accommodation cavity (111) is greater than the thickness of the first end cap (12), and the second end cap (3) is connected to When the handle assembly (1) is used, the first connection part (32) is embedded inside the accommodation cavity (111), and the second connection part (33) abuts against the handle shell (11). catch; A connecting rib (322) is provided on the peripheral side of the first connecting part (32). When the first connecting part (32) is inside the accommodation cavity (111), the connecting rib (322) is affected by the The side walls of the groove of the accommodation cavity (111) are squeezed. 7. The electric toothbrush according to claim 6, characterized in that the handle housing (11) is provided with a detachment groove ( 112), the side of the disassembly groove (112) away from the second connecting part (33) is higher than the side close to the second connecting part (33). 8. The electric toothbrush according to claim 1, characterized in that the electric toothbrush further includes a flexible connector (5), one end of the flexible connector (5) is connected to the second end cap (3) , the other end of the flexible connector (5) is connected to the handle assembly (1); When the second end cover (3) and the handle assembly (1) are in a disassembled state, the flexible connector (5) can connect the second end cover (3) and the handle assembly (1) ) remain connected. 9. The electric toothbrush according to claim 1, characterized in that the electric toothbrush further includes a microphone, and the microphone is arranged inside the accommodating groove (121). 10. The electric toothbrush according to claim 1, characterized in that the accommodation cavity (111) is arranged along the axial direction of the handle housing (11), the first end cover (12), the horn (2) The sound-transmitting membrane (4) and the second end cover (3) are both arranged along the axial direction of the handle housing (11); or The accommodation cavity (111) is arranged along the radial direction of the handle shell (11), and the first end cover (12), the horn (2), the sound-transmitting membrane (4) and the third Both end caps (3) are arranged along the radial direction of the handle shell (11).