Electric toothbrush

Abstract

The present application provides an electric toothbrush. The electric toothbrush comprises a handle, a display part, a core, a display screen and a brush head. The handle comprises two housings, the housings are provided with inner cavities, the two housings are connected to form a containing cavity, the housings have a split area, and the split area is used to expose the inner cavities of the housings to the outside when the two housings are not connected. The display part is arranged on at least one of the two housings. The core comprises a motor, the motor comprises a motor body and a motor shaft extending from the motor body, and the motor body is loaded in the containing cavity. The display screen is arranged in the containing cavity and is configured to emit light to the outside of the handle through the display part. The display screen and the core are both arranged in the housing through the split area. The brush head is detachably mounted on the motor shaft. In the present application, the display screen is installed in a large operation space through the split area, and the display screen can be well assembled to the predetermined position through the split area, which can facilitate the assembly of the display screen on the handle.

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, a motor, and a display screen. Both the motor and the display screen are housed within the handle. The display screen is connected to the motor and displays relevant information about the electric toothbrush through a display window on the handle. The display screen is inserted into a predetermined position from the bottom cover of the handle via the motor. Generally, to prevent limited display content and ensure the user can clearly see the content, the display screen is designed to be relatively large. However, due to the size limitations of the handle, a large display screen cannot be inserted into the handle along with the motor from the bottom cover. If it were to be inserted into the handle along with the motor, the handle size would need to be increased, making the handle inconvenient for the user to hold. Utility Model Content

[0003] This application provides an electric toothbrush to solve at least one of the aforementioned technical problems.

[0004] The electric toothbrush according to this application includes a handle, a display unit, a motor, a display screen, and a brush head. The handle includes two housings, each housing having an inner cavity. The two housings are joined together so that their inner cavities together form a receiving cavity. Each housing has a separate region for exposing its inner cavity to the outside when the two housings are not joined. The display unit is disposed on at least one of the two housings. The motor includes a motor body and a motor shaft extending from the motor body. The motor body is mounted within the receiving cavity. The display screen is disposed within the receiving cavity and configured to emit light to the outside of the handle through the display unit. Both the display screen and the motor body are configured to be disposed on the housing through the separate region. The brush head is detachably mounted to the motor shaft.

[0005] In the handle of this application embodiment, the handle includes two housings, each housing having a separate area. The separate area is used to expose the inner cavity of the housing to the outside when the two housings are not connected. The display screen and the mechanism can both be placed on the housing through the separate area. That is, the display screen and the mechanism can be placed on one of the two housings through the separate area, and then the two housings are connected to complete the assembly of the handle. This allows the larger operating space of the separate area to install the display screen, and the display screen can be easily assembled directly to the predetermined position through the separate area. This facilitates the assembly of the display screen on the handle. Furthermore, when the size of the display screen is large, only the size of the display screen placement area and the corresponding light-transmitting area needs to be increased. The size of the handle does not need to be increased to achieve the installation of a large-size display screen.

[0006] In some embodiments, the handle includes a first end face and a second end face facing away from each other, the first end face being closer to the brush head than the second end face, and the motor shaft extending from the first end face to the outside of the handle; the two housings are mounted and connected along a first direction between the first end face and the second end face to jointly form the receiving cavity. That is, in the first direction, the handle includes two housings that can be connected to jointly form the receiving cavity, and the separate regions are located at the ends of the two housings that are opposite to each other in the first direction.

[0007] In some embodiments, the handle includes a first end face and a second end face facing away from each other, the first end face being closer to the brush head than the second end face, and the motor shaft extending from the first end face to the outside of the handle; the two housings are mounted and connected along a second direction perpendicular to the first direction to jointly form the receiving cavity. That is, in the second direction, the handle includes two housings that can be connected to jointly form the receiving cavity, and the separate regions are located at the ends of the two housings that are opposite to each other in the second direction.

[0008] In some embodiments, the maximum size of the display screen is greater than the minimum size of the accommodating cavity at the second end face in the second direction. That is, the display screen is a large-size display screen, and the width or diameter of the display screen is greater than the inner diameter at the second end face of the handle. A large-size display screen facilitates user observation of the displayed content, enhancing the user experience.

[0009] In some embodiments, the maximum size of the display screen is greater than or equal to the maximum size of the motor body in the second direction. That is, the display screen is a large-size display screen, and the width or diameter of the display screen is greater than the width or diameter of the motor. A large-size display screen facilitates user observation of the displayed content, enhancing the user experience.

[0010] In some embodiments, the mechanism includes a bracket and a circuit board, the circuit board being disposed on the bracket, and the display screen being disposed on the circuit board and electrically connected to the circuit board; or, the display screen being disposed on the bracket and electrically connected to the circuit board via an electrical connector.

[0011] The display screen is electrically connected to the circuit board and can be installed inside the handle before the two housings are connected. This solves the problem of the display screen being difficult to connect to the circuit board. In other words, it solves the problem of difficult wiring caused by the display screen being installed through the display window, and at the same time helps to reduce the possibility of the wiring being pushed off or poorly connected.

[0012] In some embodiments, the circuit board and / or the display screen are configured to be mounted on the bracket via the split area. This avoids the problem of the display screen being unable to be inserted into the handle from the tail end when the size is large; it also solves the wiring difficulties that arise when the display screen is connected to the mechanism through the display window, making operation simpler and improving assembly efficiency.

[0013] In some embodiments, the motor and the display screen are respectively located on opposite sides of the bracket in a second direction, which is perpendicular to the first direction between the first end face of the handle and the second end face of the handle. This reduces the impact of motor vibration on the display screen, ensuring that the displayed content is clearly visible.

[0014] In some embodiments, the split region includes a mating surface and a mounting port, the mating surface being used to connect the two housings to form the receiving cavity, and the mounting port being used to expose the inner cavity of the housing to the outside when the two housings are not connected.

[0015] Specifically, during the assembly of the handle, when the two housings are not connected, at least a portion of the integrated structure formed by the display screen and the mechanism can be positioned within the cavity of one housing through a mounting port. Subsequently, the two housings can be joined together via mating surfaces to complete the assembly of the handle. The connection methods for the two mating surfaces include, but are not limited to, adhesive application and ultrasonic welding, which improves the sealing and stability of the handle.

[0016] In some embodiments, when the two housings are mounted and connected along a second direction, the internal cavities of the two housings are the same in the direction from one housing to the other, and the second direction is perpendicular to the first direction between the first end face of the handle and the second end face of the handle.

[0017] In some embodiments, the display screen includes a first side and a second side facing away from each other, and a peripheral side connecting the first side and the second side, wherein the first side of the display screen is opposite to the motor; a buffer is provided on the first side of the display screen; and / or, a buffer is provided on the second side of the display screen; and / or, a buffer is provided on the peripheral side of the display screen.

[0018] Among them, the buffer component can buffer the display screen when it is subjected to external forces, disperse and absorb the force, reduce the damage to the display screen, and extend the service life of the display screen.

[0019] In some embodiments, the display window is provided with a light-transmitting element, and the display screen is attached to the inner surface of the light-transmitting element near the display screen.

[0020] Specifically, the display screen and the light-transmitting component are bonded to the inner surface near the display screen. This reduces the gap between them, preventing light refraction or reflection between the surface of the display screen near the light-transmitting component and the inner surface of the light-transmitting component, thus avoiding uneven light scattering and ensuring uniform light propagation. The display screen and the light-transmitting component can be connected using optical adhesive. Optical adhesive has good bonding strength, ensuring a more secure connection between the display screen and the light-transmitting component, preventing displacement or detachment of the display screen and / or the light-transmitting component due to vibration or impact. Furthermore, the optical adhesive has good optical properties, helping the light emitted from the display screen to reach the light-transmitting component, increasing light transmittance, and thus making the displayed content clearer and more visible.

[0021] In some embodiments, the display portion protrudes in a direction away from the handle, and the display portion includes a display surface and an outer peripheral surface, the outer peripheral surface and the handle forming a flow guide groove, the flow guide groove being used to guide fluid along the display portion laterally away from the display surface.

[0022] This prevents the fluid generated during brushing from flowing onto the display surface, thus reducing the possibility of fluid buildup and allowing users to clearly see the content on the screen. Additionally, the deflector also helps to block splashing foam, preventing it from obstructing the display and ensuring users can clearly see the content.

[0023] In some embodiments, the display unit includes a display surface; the handle includes a first sub-part and at least one second sub-part, the display unit is disposed on the first sub-part, and the plane on which the orthographic projection of the display surface lies is a projection plane. In a direction perpendicular to the normal of the projection plane, the size of the projection of the first sub-part onto the projection plane is different from the size of the projection of the second sub-part onto the projection plane. Therefore, the handle can be a housing structure of varying thickness, and is not limited to a cylindrical structure.

[0024] In some embodiments, the maximum size of the display screen is smaller than the maximum size of the portion of the handle connected to the display unit in a second direction, and larger than the maximum size of the portion of the handle not connected to the display unit in the second direction, wherein the second direction is perpendicular to the first direction between the first end face and the second end face of the handle.

[0025] This not only ensures that the display unit does not obstruct the light emitted from the screen, meaning that all light emitted from the screen can pass through the display window of the display unit to the outside, expanding the user's viewing angle and allowing the user to clearly observe the displayed content from different angles; it also allows the design size of the display screen to exceed the size limit of the handle, that is, compared to the size of the first area being smaller than the size of the third area, the size of the display screen is larger, making it easier for the user to observe the displayed content and improving the user experience.

[0026] In some embodiments, the display unit includes a connecting end and a free end opposite to the connecting end. The connecting end is connected to the handle. In the direction from the free end to the connecting end, the distance between the free end and the center of the receiving cavity is less than the maximum distance between the outer surface of the handle and the center of the receiving cavity. That is, the height of the display unit is less than the maximum height of the handle. Therefore, when the electric toothbrush is dropped, the display unit is less likely to hit the ground first, reducing the risk of damage to the display unit due to accidental drops or impacts.

[0027] The above description is merely an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, specific embodiments of this application are given below. Attached Figure Description

[0028] 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:

[0029] Figure 1 This is a three-dimensional structural schematic diagram of an electric toothbrush according to some embodiments of this application;

[0030] Figure 2 yes Figure 1 The diagram shown is a three-dimensional exploded view of an electric toothbrush.

[0031] Figure 3 yes Figure 1 A cross-sectional schematic diagram of an electric toothbrush is shown.

[0032] Figure 4 yes Figure 3 The enlarged schematic diagram shown at point IV in the middle;

[0033] Figure 5 This is a three-dimensional structural schematic diagram of an electric toothbrush according to other embodiments of this application;

[0034] Figure 6 yes Figure 5 The diagram shown is a three-dimensional exploded view of an electric toothbrush.

[0035] Figure 7 yes Figure 5 A cross-sectional schematic diagram of an electric toothbrush is shown.

[0036] Figure 8 yes Figure 7 The enlarged schematic diagram shown at point VIII.

[0037] Explanation of key component symbols:

[0038] 100 electric toothbrushes;

[0039] 11 Handle, 111 Housing, 110 Receiving cavity, 113 Split area, 1131 Joint surface, 1133 Mounting port, 115 First end face, 117 Second end face;

[0040] 13 Display section, 130 Display window, 131 Display surface, 133 Outer peripheral surface, 135 Air guide groove, 139 Light-transmitting component;

[0041] 15. Mechanism, 151. Motor, 1510. Motor body, 1511. Motor shaft, 153. Bracket, 155. Circuit board;

[0042] 17 Display screen, 171 First side, 173 Second side, 175 Peripheral side;

[0043] 19 brush heads, 191 bristles, 193 handle. Detailed Implementation

[0044] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the embodiments of this application, and should not be construed as limiting the embodiments of this application.

[0045] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation", "connection" and "linkage" should be interpreted broadly. In one example, they can be fixed connections, detachable connections, or integral connections; they can be mechanical connections, electrical connections, or connections that allow communication between them; they can be direct connections or indirect connections through an intermediate medium; they can be internal connections between two elements or interactive relationships between two elements.

[0046] In related technologies, an electric toothbrush includes a handle, a motor, and a display screen. Both the motor and the display screen are housed within the handle. The display screen is connected to the motor and displays relevant information about the electric toothbrush through a display window on the handle. The display screen is inserted into a predetermined position from the bottom cover of the handle via the motor. Generally, to prevent limited display content and ensure the user can clearly see the content, the display screen is designed to be relatively large. However, due to the size limitations of the handle, a large display screen cannot be inserted into the handle along with the motor from the bottom cover. If it were to be inserted into the handle along with the motor, the handle would need to be enlarged, making it inconvenient for the user to hold. To solve this problem, please refer to [link to relevant documentation]. Figure 1 or Figure 5 This application provides an electric toothbrush 100.

[0047] Please see Figure 1 and Figure 2 ,or Figure 5 and Figure 6 The electric toothbrush 100 according to this application includes a handle 11, a display unit 13, a motor 15, a display screen 17, and a brush head 19. The handle 11 includes two housings 111, each housing having an inner cavity. The two housings 111 are joined so that their inner cavities together form a receiving cavity 110. Each housing 111 has a separate region 113, which exposes the inner cavity of the housing 111 to the outside when the two housings 111 are not joined. The display unit 13 is disposed on at least one of the two housings 111. The motor includes a motor body and a motor shaft extending from the motor body. The motor body is mounted within the receiving cavity. The display screen is disposed within the receiving cavity and configured to emit light to the outside of the handle through the display unit. Both the display screen and the motor are configured to be disposed within the housing through the separate region. The brush head is detachably mounted to the motor shaft.

[0048] Specifically, the electric toothbrush 100 can drive the brush head 19 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 19. 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 19 and the motor shaft 1511 can be connected in a detachable manner. This facilitates the replacement of brush heads 19 with different models or materials; furthermore, when the cleaning effect of the brush head 19 decreases due to prolonged use, it is easy to replace it with a new brush head 70, 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, and battery-powered electric toothbrushes. In some embodiments, the brush head 19 includes bristles 191 and a shaft 193. The bristles 191 are used to clean teeth. The material of the bristles 191 may be, but is not limited to, nylon, rubber, or boar bristles. Preferably, the bristles 191 have good toughness and elasticity, thus enabling better cleaning of areas in the mouth that need cleaning. One end of the handle 193 is detachably connected to the motor shaft 1511, and the other end is provided with bristles 191. The handle 193 is generally elongated, which facilitates the insertion of the handle 193 into the mouth so that the bristles 191 can reach the areas in the mouth that need cleaning, thereby ensuring the cleaning effect of the electric toothbrush 100.

[0049] 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 to provide a comfortable grip for the user. The handle 11 includes a first end face 115 and a second end face 117 facing away from each other. The first end face 115 is closer to the brush head 19 than the second end face 117. The motor shaft 1511 extends from the first end face 115 to the outside of the handle 11.

[0050] The handle 11 can be made of metallic or non-metallic materials. 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. In some embodiments, the handle 11 may be made of metallic materials, which increases the structural strength of the handle 11 and prevents damage during operation of the electric toothbrush 100, thereby improving the stability and reliability of the electric toothbrush 100. In other embodiments, the handle 11 may be made of non-metallic materials, which makes the handle 11 lighter, thus facilitating the portability of both the handle 10 and the electric toothbrush 100.

[0051] The display unit 13 is disposed on at least one of the two housings. In some embodiments of this application, the display unit 13 is provided with a through display window 130, which communicates with the receiving cavity 110, and the display screen 17 is opposite to the display window 130.

[0052] In some embodiments, the display unit 13 is integrally formed with one of the two housings 111, that is, the display unit 13 is an integral structure with one of the two housings 111, and a separate structure with the other of the two housings 111. This reduces the number of parts in the handle 10, which is beneficial to improving the assembly efficiency of the handle 10. On the other hand, it improves the bonding strength between the display unit 13 and the housing 111, reduces the possibility of separation between the housing 111 and the display unit 13 during the operation of the handle 10, and improves the stability and reliability of the handle 10. In other embodiments, the display unit 13 is separately formed with the housing 111, that is, the display unit 13 and both housings 111 are separate structures. The display unit 13 and the housing 111 can be connected by a detachable connection method or a 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.

[0053] The mechanism 15 is a structure used to drive the brush head 19 to vibrate. After the user turns on the electric toothbrush 100, the motor shaft 1511 of the motor 151 in the mechanism 15 will start to vibrate, and drive the brush head 19 to vibrate through the part connected to the brush head 19, so that the teeth are cleaned by the bristles 191 of the vibrating brush head 19. At this time, the user usually needs to obtain information about the human characteristics of the brush head 19 and the surrounding oral cavity to locate the area of ​​teeth being brushed.

[0054] The display screen 17 is a structure for emitting display content; the display content includes, but is not limited to, cleaning duration, cleaning mode, cleaning area, etc. In some embodiments of this application, the display screen 17 is opposite to the display window 130, so that when the display screen 17 is working, the light emitted by the display screen 17 can be emitted to the outside of the handle 11 through the display window 130 and received by the human eye, thereby allowing the user to observe the display content emitted by the display screen 17 through the display window 130.

[0055] In some embodiments of this application, the display unit 13 includes a display surface 131, and the plane on which the orthographic projection of the display surface 131 is located is a projection plane.

[0056] Specifically, the display surface 131 provides a display function, displaying content emitted by the display screen 17 (such as cleaning duration, cleaning mode, cleaning area, etc.). The display surface 131 also provides interactive functions, allowing users to switch between different cleaning modes and adjust cleaning intensity via touch or buttons. The orthographic projection of the display surface 131 can be: during projection, under parallel light illumination, the plane on which the projection of the display surface 131 falls, perpendicular to the projected light rays. It should be noted that in some embodiments, the normal direction of the projection plane (…) Figure 3 or Figure 7 As shown, the direction can be perpendicular to the first end face 115 to the second end face 117 (i.e., the first direction X as described below).

[0057] In the handle of this application embodiment, the handle 11 includes two housings 111. The housings 111 have a split area. The split area is used to expose the inner cavity of the housing 111 to the outside when the two housings 111 are not connected. The display screen 17 and the mechanism 15 can both be disposed on the housings 111 through the split area. That is, the display screen 17 and the mechanism 15 can be disposed on one of the two housings 111 through the split area, and then the two housings 111 are connected to complete the assembly of the handle 11. Thus, the larger operating space of the split area can be used to install the display screen 17, and the display screen 17 can be directly assembled to the predetermined position through the split area. This facilitates the assembly of the display screen 17 on the handle 11. When the size of the display screen 17 is large, it is only necessary to increase the size of the placement area of ​​the display screen 17 and the corresponding light-transmitting area (such as the display window 130). The size of the handle 11 does not need to be increased, thus enabling the installation of a large-size display screen 11.

[0058] The electric toothbrush 100 will be further explained below with reference to the accompanying drawings.

[0059] Please see Figures 6 to 8 In some embodiments, two housings 111 are mounted and connected along a first direction X between a first end face 115 and a second end face 117 to jointly form a receiving cavity 110. That is, in the first direction X (the length direction of the handle 11), the handle 11 includes two housings 111 that can be connected to jointly form a receiving cavity 110, and the split region 113 is located at the ends of the two housings 111 that are opposite to each other in the first direction X. For example, the handle 11 can be divided into two housings 111 by a first plane perpendicular to the first direction X, and the first plane is located at any position between the first end face 115 and the second end face 117.

[0060] It is understandable that the handle 11 can be divided into an upper housing by the first plane. Figure 6 The upper shell 111) and the lower shell ( Figure 6The lower housing 111 is located in the middle, with the upper housing closer to the brush head 19 than the lower housing. The assembly steps for the handle 10 are as follows: First, connect the mechanism 15 and the display screen 17; then, place the mechanism 15 and the display screen 17 onto the lower housing via the separation area 113; finally, connect the upper and lower housings to complete the assembly of the handle 10. It should be noted that the assembly steps for the handle 10 in the above embodiment are merely illustrative, and other assembly steps for the handle 10 can also be implemented, which will not be described in detail here.

[0061] In this embodiment, when the two housings 111 are connected along the first direction X to jointly form the accommodating cavity 110, the display unit 13 may include a first sub-part and a second sub-part. The first sub-part and the second sub-part are respectively disposed on the two housings 111, and when the two housings 111 are connected, the first sub-part and the second sub-part jointly form the display window 130.

[0062] Please see Figures 1 to 4 In other embodiments, the two housings 111 are joined along a second direction Y perpendicular to the first direction X to jointly form a receiving cavity 110. That is, in the second direction Y, the handle 11 includes two housings 111 that can be joined to jointly form a receiving cavity 110, and the split region 113 is located at the ends of the two housings 111 that are opposite to each other in the second direction Y. For example, the handle 11 can be divided into two housings 111 by a second plane perpendicular to the second direction Y; in other words, the second plane is parallel to the first direction X.

[0063] It is understandable that the handle 11 can be divided into the front housing by the second plane. Figure 2 The upper and middle shell 111) and the rear shell ( Figure 2 The lower housing 111, the motor shaft 1511 of the mechanism 15 extends the handle 11 through the gap between the front housing and the rear housing in the first direction X. The assembly steps of the handle 10 can be as follows: first, connect the mechanism 15 and the display screen 17; then, place the mechanism 15 and the display screen 17 onto the rear housing through the split area 113; finally, connect the rear housing and the front housing to complete the assembly of the handle 10. It should be noted that the assembly steps of the handle 10 in the above embodiment are merely illustrative, and the assembly steps of the handle 10 can also take other forms, which will not be described in detail here.

[0064] In this embodiment, when the two housings 111 are connected along the second direction Y to jointly form the accommodating cavity 110, the display unit 13 is disposed in either of the two housings 111; or, the display unit 13 includes a first sub-part and a second sub-part, the first sub-part and the second sub-part are respectively disposed in the two housings 111, and when the two housings 111 are connected, the first sub-part and the second sub-part jointly form the display window 130.

[0065] In related technologies, the motor 15 and display screen 17 need to be installed inside the handle 11 via the tail end of the handle 10 (the end where the second end face 117 of the handle 11 is located). When the display screen 17 is large, it cannot be directly inserted into the handle 11 via the tail end of the handle 10. Instead, it can only be installed after the motor 15 is installed in the handle 11, connected to the motor 15 via the display window 130 and then installed in the handle 11. However, because the display window 130 is small, the user's operating space is limited, making it difficult to connect the display screen 17 to the motor 15, complicating the assembly process and affecting the assembly efficiency of the electric toothbrush 100.

[0066] In some embodiments of this application, the maximum size of the display screen 17 is greater than the minimum size of the accommodating cavity 110 at the second end face 117 in the second direction Y. That is, the display screen 17 is a large-size display screen, and the width or diameter of the display screen 17 is greater than the inner diameter at the second end face 117 of the handle 11. The large-size display screen facilitates the user's observation of the displayed content, improving the user experience; however, the large-size display screen cannot be installed inside the handle 11 from the tail end of the handle 10.

[0067] Furthermore, in some embodiments of this application, the maximum size of the display screen 17 is greater than or equal to the maximum size of the motor body 1510 in the second direction Y. That is, the display screen 17 is a large-size display screen, and the width or diameter of the display screen 17 is greater than the width or diameter of the motor 151. The large-size display screen facilitates user observation of the displayed content, improving the user experience; however, the large-size display screen cannot be inserted into the handle 11 along with the motor 151 through the tail end of the handle 10.

[0068] Therefore, in the handle 10 of this application embodiment, the handle 11 includes two housings 111. The housing 111 has a split area 113. The split area 113 is used to expose the inner cavity of the housing 111 to the outside when the two housings 111 are not connected. The display screen 17 and the mechanism 15 can both be disposed on the housing 111 through the split area 113. That is, the display screen 17 and the mechanism 15 can be disposed on one of the two housings 111 through the split area 113, and then the two housings 111 are connected to complete the assembly of the handle 10. This facilitates the assembly of the display screen 17 on the handle 11. When the size of the display screen 17 is large, the size of the handle 11 does not need to be increased to realize the installation of the large-size display screen, and it is not necessary to realize the installation of the large-size display screen through the display window 130. This simplifies the assembly operation and improves the assembly efficiency of the electric toothbrush 100.

[0069] Please see Figure 2In some embodiments, when the two housings 111 are mounted and connected along the second direction Y, the internal dimensions of the two housings 111 are the same in the direction from one housing 111 to the other housing 111, and the second direction Y is perpendicular to the first direction X between the first end face 115 and the second end face 117 of the handle 11. It should be noted that, in this embodiment, the second plane can be the midpoint of the width of the handle 11, that is, the second plane is the middle plane of the handle 11 in the second direction Y. Thus, the handle 11 can be divided into two approximately symmetrical housings 111 by the second plane, and the internal dimensions of the two housings 111 are the same in the direction from one housing 111 to the other housing 111.

[0070] Please see Figure 2 or Figure 6 In some embodiments of this application, the display portion 13 is closer to the first end face 115 than the second end face 117. That is, the display portion 13 is disposed on the handle 10 closer to the brush head 19. This facilitates the viewing of the content displayed on the display screen 17 through the display window 130 and prevents the display portion 13 from occupying the space on the handle 10 for the user to hold, thereby providing the user with sufficient grip length on the handle 10 and making it convenient for the user to use the electric toothbrush 100.

[0071] In some embodiments, the split region 113 includes a mating surface 1131 and a mounting port 1133. The mating surface 1131 is used to bring the two housings 111 together to form a receiving cavity 110, and the mounting port 1133 is used to expose the inner cavity of the housing 111 to the outside when the two housings 111 are not connected.

[0072] Specifically, in some embodiments, during the assembly of the handle 10, when the two housings 111 are not connected, at least a portion of the integral structure formed by the display screen 17 and the mechanism 15 can be disposed within the cavity of one housing 111 through the mounting port 1133. Subsequently, the two housings 111 can be connected through the mating surfaces 1131 to complete the assembly of the handle 10. The connection methods of the two mating surfaces 1131 include, but are not limited to, adhesive application and ultrasonic welding, which can improve the sealing and stability of the handle 11. It should be noted that in some embodiments, the mating surfaces 1131 can be planar structures; or, the mating surfaces 1131 can be concave-convex structures, and the two mating surfaces 1131 can be matched and connected.

[0073] In some embodiments, the mechanism 15 further includes a bracket 153, with the motor 151 and the display screen 17 respectively located on opposite sides of the bracket 153 in the second direction Y. This reduces the impact of motor 151 vibration on the display screen 17, ensuring that the displayed content is clearly visible.

[0074] The bracket 153 is a component used to mount the motor 151 and other components of the electric toothbrush 100 (such as a battery). The bracket 153 can be made of metallic or non-metallic materials, including but not limited to aluminum, iron, steel, or aluminum alloys, and non-metallic materials including but not limited to plastics. In one example, the bracket 153 can be made of both metallic and non-metallic materials, thereby increasing its structural strength, preventing damage during operation of the electric toothbrush 100, and improving the stability and reliability of the electric toothbrush 100. In another example, the bracket 153 can be made of non-metallic materials, thereby reducing its weight and contributing to the portability of the electric toothbrush 100.

[0075] In some embodiments, the mechanism 15 includes a bracket 153 and a circuit board 155, with the circuit board 155 disposed on the bracket 153 and the display screen 17 disposed on the circuit board 155 and electrically connected to the circuit board 155; or, the display screen 17 is disposed on the bracket 153 and electrically connected to the circuit board 155 via an electrical connector.

[0076] The display screen 17 is electrically connected to the circuit board 155 and can be installed in the handle 11 before the two housings 111 are connected. This solves the problem that the display screen 17 is difficult to connect to the circuit board 155. That is, it solves the problem of difficult wiring caused by the installation of the display screen 17 through the display window 130, and at the same time helps to reduce the possibility of wiring being pushed off or poorly connected.

[0077] When the display screen 17 is mounted on and electrically connected to the circuit board 155, the circuit board 155 provides support and fixation for the display screen 17, making the connection between the display screen 17 and the circuit board 155 more stable. When the display screen 17 is mounted on the bracket 153 and electrically connected to the circuit board 155 via electrical connectors, the installation position of the display screen 17 is not limited by the installation position of the circuit board 155, thereby facilitating the installation of the display screen 17. The electrical connectors include, but are not limited to, wire harnesses and flexible circuit boards 155.

[0078] In some embodiments, the circuit board 155 and / or the display screen 17 are configured to be mounted on the bracket 153 via the split area 113. This avoids the problem of the display screen 17 being too large to be inserted into the handle 11 from the tail end of the handle 10; it also solves the wiring difficulties that arise when the display screen 17 is connected to the mechanism 15 through the display window 130, making operation simpler and improving assembly efficiency.

[0079] Please see Figures 2 to 4 ,or Figures 6 to 8In some embodiments, the display screen 17 includes a first side 171 and a second side 173 facing away from each other, and a peripheral side 175 connecting the first side 171 and the second side 173. The first side 171 of the display screen 17 is opposite to the motor 151. A buffer is provided on the first side 171 of the display screen 17; and / or, a buffer is provided on the second side 173 of the display screen 17; and / or, a buffer is provided on the peripheral side 175 of the display screen 17. The buffer can buffer the display screen 17 when it is subjected to external forces, dispersing and absorbing the forces, reducing damage to the display screen 17, and extending the service life of the display screen 17.

[0080] For example, when the buffer is provided on the first side 171 and / or the second side 173 of the display screen 17, the buffer is used to provide a cushioning effect for the display screen 17, to prevent the motor 151 from vibrating and damaging the display screen 17, and to prevent the vibration of the display screen 17 from being too strong and affecting the visual effect; when the buffer is provided on the periphery 175 of the display screen 17, the buffer can be used to fix the display screen 17 and reduce the possibility of the display screen 17 being damaged by collision during assembly.

[0081] It is understood that in some embodiments, the display screen 17 may be disposed on the bracket 153 and / or the display section 13. When the display screen 17 is disposed on the display section 13, the buffer is used to allow the display screen 17 to be interference-fitted with the inner wall of the display section 13; when the display screen 17 is disposed on the bracket 153, the buffer is used to allow the display screen 17 to be interference-fitted with the inner wall of the bracket 153.

[0082] It should be noted that in some embodiments, the cushioning element can be made of soft and elastic materials, such as silicone, rubber, or polyvinyl chloride. Rubber includes, but is not limited to, natural rubber, nitrile rubber, fluororubber, polyurethane rubber, EPDM rubber, or silicone rubber. The cushioning element can return to its original shape after being subjected to force, effectively absorbing and dispersing the force.

[0083] Please see Figures 1 to 4 ,or Figures 5 to 8 In some embodiments, the display window 130 is provided with a light-transmitting element 139, and the display screen 17 is attached to the inner surface of the light-transmitting element 139 near the display screen 17. It should be noted that in some embodiments, the outer surface of the light-transmitting element 139 is the display surface 131.

[0084] The light-transmitting element 139 can be made of materials such as glass, plastic, or crystal. The light-transmitting element 139 acts as a barrier between the external environment and the interior of the handle 11, preventing dust, fluids, or other contaminants from entering the handle 11 and protecting the display screen 17 from contamination. The light-transmitting element 139 may also possess certain optical properties, allowing light emitted from the display screen 17 to pass through the light-transmitting element 139 and reach the outside of the handle 11, where it is received by the human eye. There can be one or multiple light-transmitting elements 139. In the embodiments of this application, there is one light-transmitting element 139. In embodiments with multiple light-transmitting elements 139, the size, shape, or light transmittance of the multiple light-transmitting elements 139 can be different or the same. Furthermore, the light-transmitting element 139 can be coated with coatings possessing different optical properties, such as an anti-reflective coating to improve light transmittance, an anti-reflective coating to reduce stray reflections, a filter coating to filter light of specific wavelengths, and an anti-fog coating to prevent fogging.

[0085] Specifically, the display screen 17 is bonded to the inner surface of the light-transmitting element 139 near the display screen 17. This reduces the gap between the display screen 17 and the light-transmitting element 139, preventing light refraction or reflection between the surface of the display screen 17 near the light-transmitting element 139 and the inner surface of the light-transmitting element 139, thus avoiding uneven light scattering and ensuring uniform light propagation. The display screen 17 and the light-transmitting element 139 can be connected using optical adhesive. Optical adhesive has good bonding strength, making the connection between the display screen 17 and the light-transmitting element 139 more secure and preventing displacement or detachment of the display screen 17 and / or the light-transmitting element 139 due to vibration or impact. Furthermore, the optical adhesive has good optical properties, which helps the light emitted from the display screen 17 to be transmitted to the light-transmitting element 139, improving light transmittance and making the displayed content on the display screen 17 clearer.

[0086] Please combine Figure 4 or Figure 8 In some embodiments, the display portion 13 protrudes in a direction away from the handle 11. The display portion 13 includes a display surface 131 and an outer peripheral surface 133. The outer peripheral surface 133 and the handle 11 together form a flow guide groove 135, which is used to guide fluid along the display portion 13 in a lateral direction away from the display surface 131.

[0087] The flow channel 135 is used to guide the flow of fluid. During brushing, the fluid (such as toothpaste foam and water) in the brush head 19 flows from the brush head 19 to the handle 10. It is understood that fluid tends to flow along the path of least resistance. Therefore, after the fluid flows to the flow channel 135, the display section 13 will obstruct the flow of fluid. However, the sides of the display section 13 (the opposite sides of the display section 13 in the flow direction, where the flow direction is perpendicular to both the X direction from the first end face 115 to the second end face 117 and the Y direction of the normal to the projection plane) will not obstruct the flow of fluid. Therefore, the fluid tends to flow laterally towards the display section 13. That is, the fluid can flow laterally away from the display surface 131 (i.e., the light-transmitting element 139) along the display section 13 under the guidance of the flow channel 135. This can prevent the fluid generated during brushing from flowing to the display surface 131, thereby reducing the possibility of fluid accumulating on the display surface 131 and allowing the user to clearly observe the content of the display screen 17 through the display surface 131. In addition, the flow channel 135 can also block splashing foam, prevent foam from obstructing the display surface 131, and ensure that users can observe the display content of the display screen 17 through the display surface 131.

[0088] Please see Figure 2 and Figure 3 ,or Figure 6 and Figure 7 In some embodiments, the handle 11 includes a first sub-part and at least one second sub-part connected to each other. The display part 13 is disposed on the first sub-part. The plane on which the orthographic projection of the display surface 131 is located is the projection plane. In the direction perpendicular to the normal of the projection plane, the size of the projection of the first sub-part on the projection plane is different from the size of the projection of the second sub-part on the projection plane.

[0089] Specifically, in some embodiments, in directions perpendicular to both the normal direction Y of the projection plane and the direction X from the first end face 115 to the second end face 117, the size of the projection of the first sub-part on the projection plane differs from the size of the projection of the second sub-part on the projection plane. Therefore, the handle 11 can be a shell structure with inconsistent thickness, and is not limited to a straight cylindrical structure. For example, in directions perpendicular to both the normal direction Y of the projection plane and the direction X from the first end face 115 to the second end face 117, the size of the projection of the first sub-part on the projection plane is larger than the size of the projection of the second sub-part on the projection plane.

[0090] In some embodiments, the maximum size of the display screen 17 is smaller than the maximum size of the portion of the handle 11 connected to the display unit 13 in the second direction Y, and larger than the maximum size of the portion of the handle 11 not connected to the display unit 13 in the second direction Y.

[0091] Specifically, in some embodiments, the projection of the display screen 17 onto the projection plane is a first region, the projection of the portion of the handle 11 connected to the display unit 13 onto the projection plane is a second region, and the projection of the portion of the handle 11 not connected to the display unit 13 onto the projection plane is a third region. In the second direction Y, the size of the first region is smaller than the size of the second region, thereby ensuring that the display unit 13 does not obstruct the light emitted from the display screen 17. That is, all light emitted from the display screen 17 can pass through the display window 130 of the display unit 13 to the outside, thereby expanding the user's viewing angle and allowing the user to clearly observe the displayed content from different angles. Furthermore, in the second direction Y, the size of the first region is larger than the size of the third region, thereby allowing the design size of the display screen 17 to exceed the size limit of the handle 11. That is, compared to the size of the first region being smaller than the size of the third region, the size of the display screen 17 is larger, which facilitates the user's observation of the displayed content and improves the user experience.

[0092] Please see Figures 2 to 4 ,or Figures 6 to 8 In some embodiments, the display unit 13 includes a connecting end and a free end opposite to the connecting end, the connecting end being connected to the handle 11.

[0093] Specifically, in some embodiments, the free end protrudes away from the handle 11 and has a mounting opening for the light-transmitting element 139 to be mounted inside the display section 13. This allows the light-transmitting element 139 to be fixed to the display section 13. When the electric toothbrush 100 is dropped or impacted, the free end can absorb some of the impact force, protecting the light-transmitting element 139 and preventing it from breaking due to external impact. It should be noted that the light-transmitting element 139 and the free end can be sealed together. This prevents external water or dust from entering the display section 13 through the gap between the light-transmitting element 139 and the free end, thus preventing damage to the internal structural components of the display section 13 and ensuring the stability of the handle 10 and the electric toothbrush 100 during operation.

[0094] In some embodiments, the light-transmitting element 139 is mounted at the free end and exposed to the outside of the display unit 13, making it easier to install and remove. Additionally, since a portion of the light-transmitting element 139 is exposed to the outside of the display unit 13, the display surface 131 is also exposed to the outside of the display unit 13, thereby reducing the possibility of the display unit 13 obstructing the display surface 131 and ensuring that the user can observe the displayed information on the display surface 131.

[0095] In other embodiments, the light-transmitting element 139 is mounted on the free end and located inside the display section 13, that is, the light-transmitting element 139 is not exposed to the outside of the display section 13. As a result, when the electric toothbrush 100 falls, the light-transmitting element 139 is less likely to collide with the ground, reducing the possibility of damage to the light-transmitting element 139 due to accidental drops or impacts, and extending the service life of the light-transmitting element 139.

[0096] In some embodiments, the distance between the free end and the center of the receiving cavity 110 in the direction from the free end to the connecting end is less than the maximum distance between the outer surface of the handle 11 and the center of the receiving cavity 110. That is, in the normal direction Y of the projection plane, the height of the display unit 13 is less than the maximum height of the handle 11. Therefore, when the electric toothbrush 100 is dropped, the display unit 13 is less likely to hit the ground first, reducing the risk of damage to the display unit 13 due to accidental drops or impacts.

[0097] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. An electric toothbrush, characterized in that, include: The handle includes two housings, each housing having an inner cavity. The two housings are joined together so that the inner cavities of the two housings together form a receiving cavity. The housing has a split region for exposing the inner cavity of the housing to the outside when the two housings are not joined together. A display unit is disposed on at least one of the two housings; The mechanism includes a motor, the motor including a motor body and a motor shaft extending from the motor body, the motor body being mounted in the accommodating cavity; The display screen is disposed within the accommodating cavity and configured to emit light to the outside of the handle through the display portion; both the display screen and the mechanism are configured to be disposed on the housing through the split area. and A brush head, which is detachably mounted on the motor shaft.

2. The electric toothbrush according to claim 1, characterized in that, The handle includes a first end face and a second end face facing away from each other. The first end face is closer to the brush head than the second end face. The motor shaft extends from the first end face to the outside of the handle. The two housings are mounted and connected along a first direction between the first end face and the second end face to jointly form the accommodating cavity; or, The two housings are mounted and connected along a second direction perpendicular to the first direction to jointly form the receiving cavity.

3. The electric toothbrush according to claim 2, characterized in that, The maximum size of the display screen is greater than the minimum size of the accommodating cavity at the second end face in the second direction.

4. The electric toothbrush according to claim 2, characterized in that, The maximum size of the display screen is greater than or equal to the maximum size of the motor body in the second direction.

5. The electric toothbrush according to claim 1, characterized in that, The mechanism includes a bracket and a circuit board. The circuit board is disposed on the bracket, and the display screen is disposed on the circuit board and electrically connected to the circuit board; or, the display screen is disposed on the bracket and electrically connected to the circuit board through an electrical connector.

6. The electric toothbrush according to claim 5, characterized in that, The circuit board and / or the display screen are configured to be mounted on the bracket via the split area.

7. The electric toothbrush according to claim 5, characterized in that, The motor and the display screen are respectively located on opposite sides of the bracket in a second direction, which is perpendicular to the first direction between the first end face of the handle and the second end face of the handle.

8. The electric toothbrush according to any one of claims 1-7, characterized in that, The split region includes a mating surface and a mounting port. The mating surface is used to connect the two housings to form the accommodating cavity, and the mounting port is used to expose the inner cavity of the housing to the outside when the two housings are not connected.

9. The electric toothbrush according to claim 1, characterized in that, When the two housings are mounted and connected along a second direction, the internal cavities of the two housings are the same in the direction from one housing to the other, and the second direction is perpendicular to the first direction between the first end face of the handle and the second end face of the handle.

10. The electric toothbrush according to claim 1, characterized in that, The display screen includes a first side and a second side facing away from each other, and a peripheral side connecting the first side and the second side, wherein the first side of the display screen is opposite to the motor; A buffer is provided on the first side of the display screen; and / or, A buffer is provided on the second side of the display screen; and / or, The display screen is provided with a buffer on its periphery.

11. The electric toothbrush according to claim 1, characterized in that, The display window is provided with a light-transmitting element, and the display screen is attached to the inner surface of the light-transmitting element near the display screen.

12. The electric toothbrush according to claim 1, characterized in that, The display section protrudes in a direction away from the handle. The display section includes a display surface and an outer peripheral surface. The outer peripheral surface and the handle together form a flow guide groove. The flow guide groove is used to guide fluid along the display section in a lateral direction away from the display surface.

13. The electric toothbrush according to claim 1, characterized in that, The display unit includes a display surface; the handle includes a first sub-part and at least one second sub-part connected to each other, the display unit is disposed on the first sub-part, the plane on which the orthographic projection of the display surface is located is the projection plane, and in the direction perpendicular to the normal of the projection plane, the size of the projection of the first sub-part on the projection plane is different from the size of the projection of the second sub-part on the projection plane.

14. The electric toothbrush according to claim 1, characterized in that, The maximum size of the display screen is smaller than the maximum size of the portion of the handle connected to the display unit in the second direction, and larger than the maximum size of the portion of the handle not connected to the display unit in the second direction. The second direction is perpendicular to the first direction between the first end face and the second end face of the handle.

15. The electric toothbrush according to claim 1, characterized in that, The display unit includes a connecting end and a free end opposite to the connecting end. The connecting end is connected to the handle. In the direction from the free end to the connecting end, the distance between the free end and the center of the receiving cavity is less than the maximum distance between the outer surface of the handle and the center of the receiving cavity.

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