Brush handle and electric toothbrush

Abstract

The embodiment of the utility model provides a brush handle and an electric toothbrush. The brush handle comprises a handle cylinder, a display part installed on the handle cylinder and a machine core. The display part comprises a display surface, the plane where the orthographic projection of the display surface is located is a first plane, the projection of the display surface on the first plane is a first area, the projection of the handle cylinder on the first plane is a second area, and the first area is partially located outside the second area. The movement is arranged in the handle cylinder. The display part further comprises a display table, a light-transmitting piece and a display screen, and the display screen and the light-transmitting piece are both installed on the display table. In the application, the projection of the display surface on the first plane is the first area, the projection of the handle barrel on the first plane is the second area, and the first area is partially located outside the second area, so that the design size of the display surface can exceed the size limit of the handle barrel, the size of the display surface is larger, and a user can conveniently observe the display content of the display surface.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of oral care, in particular to a brush handle and an electric toothbrush. BACKGROUND

[0002] In the related art, an electric toothbrush includes a brush head and a brush handle, the brush handle includes a handle cylinder, and a display surface is arranged on the handle cylinder, and the display surface can display relevant information of the electric toothbrush. However, due to the size limitation of the handle cylinder, the size of the display surface is small, so that it is difficult for a user to clearly see the display content of the display surface. CONTENT OF THE UTILITY MODEL

[0003] The present application provides a brush handle and an electric toothbrush to solve at least one of the above technical problems.

[0004] The brush handle of the present application includes a handle cylinder, a display part mounted on the handle cylinder, and a movement. The display part includes a display surface, the normal projection plane of the display surface is a first plane, the projection of the display surface on the first plane is a first area, the projection of the handle cylinder on the first plane is a second area, and part of the first area is located outside the second area. The movement is arranged in the handle cylinder. The display part further includes a display platform, a light-transmitting piece, and a display screen, and the display screen and the light-transmitting piece are both mounted on the display platform.

[0005] In the brush handle of the present application, the projection of the display surface on the first plane is the first area, the projection of the handle cylinder on the first plane is the second area, and part of the first area is located outside the second area. Therefore, the design size of the display surface can exceed the size limitation of the handle cylinder, that is, compared with the first area being located in the second area, the size of the display surface is larger, so that the user can easily observe the display content of the display surface, and the user experience is improved.

[0006] In some embodiments, in the direction perpendicular to the first plane, the display platform protrudes away from the body part. Therefore, the design size of the display platform can exceed the size limitation of the handle cylinder, so that the size of the display platform is increased, and the size of the display surface is larger, so that the user can clearly observe the display content of the display surface. In addition, compared with the display platform being located in the interior of the handle cylinder, the accommodation space in the interior of the handle cylinder is not occupied by the display platform, so that more elements can be accommodated in the interior of the handle cylinder.

[0007] In some embodiments, the minimum distance between the outer contour of the projection of the display screen on the first plane and the outer contour of the projection of the light-transmitting piece on the first plane is greater than or equal to 1 mm.

[0008] If the minimum distance between the outer contour of the projection of the display screen on the first plane and the outer contour of the projection of the light-transmitting piece on the first plane is less than 1 mm, the distance between the outer contour of the display screen and the outer contour of the light-transmitting piece is too small, and in the case that the user does not directly observe the display screen from the light-transmitting piece, the light emitted from the edge part of the display screen can be blocked by the display table, so that the user cannot observe the display content carried thereby, and the use experience of the user is affected. In some embodiments of the present application, the minimum distance between the outer contour of the projection of the display screen on the first plane and the outer contour of the projection of the light-transmitting piece on the first plane is greater than or equal to 1 mm, so that the light of the display screen can be transmitted through the light-transmitting piece, the user can easily see the content displayed by the display screen, that is, in the case that the user does not directly observe the display screen from the light-transmitting piece, the user can also see the content displayed by the display screen, the possibility that the light emitted from the edge part of the display screen is blocked by the display table is reduced, and the use experience of the user is improved.

[0009] In some embodiments, the display table comprises a connecting end and a free end away from the connecting end, the connecting end is connected with the body part; the light-transmitting piece is arranged in the display table from the free end, and the light-transmitting piece is installed in the free end. In this way, the light-transmitting piece can be fixed on the display table. When the electric toothbrush falls or collides, the free end can absorb part of the impact force, protect the light-transmitting piece, and avoid breaking the light-transmitting piece due to external impact force.

[0010] In some embodiments, the display table comprises a connecting end and a free end away from the connecting end, the connecting end is connected with the body part; the light-transmitting piece is in sealing connection with the free end, and the outer surface of the light-transmitting piece is the display surface. In this way, it can be prevented that water or dust in the external environment enters the display part through the gap between the light-transmitting piece and the free end, so that the structural parts inside the display part are damaged, thereby the stability of the brush handle and the electric toothbrush in operation can be ensured.

[0011] In some embodiments, the minimum distance between the handle cylinder and the light-transmitting piece is not greater than 5 mm.

[0012] If the minimum distance between the handle cylinder and the light-transmitting piece is greater than 5 mm, the distance between the light-transmitting piece and the handle cylinder is too large, which can cause large deviation of the center of gravity of the electric toothbrush in the direction perpendicular to the first plane, and the electric toothbrush is unstable when placed. In some embodiments of the present application, the distance between the light-transmitting piece and the handle cylinder is not greater than 5 mm, which can prevent the deviation of the center of gravity of the display table and ensure the stability of the electric toothbrush when placed.

[0013] In some embodiments, the display table is provided with a mounting cavity, and the display screen is accommodated in the mounting cavity.

[0014] Specifically, in some embodiments, the mounting cavity is in communication with the space inside the handle barrel. On the one hand, the mounting cavity provides accommodation space for the display screen and other elements, reducing the interference of the external environment with the display screen; on the other hand, the display screen is installed in the mounting cavity, which can reduce the distance between the display screen and the light-transmitting piece compared to the case where the display screen is arranged in the space inside the handle barrel, so that the light emitted by the display screen is not easily blocked by the display platform, facilitating user observation; on the other hand, the movement is accommodated in the space inside the handle barrel, and the display screen is accommodated in the mounting cavity, so that the display screen does not occupy the space inside the handle barrel, thereby reducing the size of the handle barrel and facilitating user holding; on the other hand, when the electric toothbrush is in operation, the movement and the display screen are accommodated in different spaces and maintain a certain distance, which can avoid display information blurring due to movement vibration and can avoid the display screen being displaced due to vibration, thereby improving the display effect and prolonging the service life of the display screen.

[0015] In some embodiments, the display platform is integrally formed with the body portion. In this way, the bonding strength between the display platform and the handle barrel can be improved, preventing the display platform and the handle barrel from being separated during operation of the electric toothbrush, thereby ensuring the stability and reliability of the electric toothbrush.

[0016] In some embodiments, the display platform is separately provided from the body portion, and the display platform and the body portion and / or the movement are connected by at least one of screw connection, threaded connection, adhesion, and welding. The separate formation facilitates disassembly and replacement of the display platform and the handle barrel.

[0017] In some embodiments, the height by which the display platform protrudes relative to the body portion in a direction perpendicular to the first plane is greater than or equal to 2.5 mm and less than or equal to 10 mm.

[0018] In some embodiments, the height by which the display platform protrudes relative to the handle barrel is greater than or equal to 2.5 mm and less than or equal to 10 mm, which can provide sufficient mounting space for the display screen; can make the brush handle structure compact, so that the display platform is less likely to land first when the electric toothbrush falls, reducing the risk of damage to the electric toothbrush due to accidental falling or impact; and can prevent the center of gravity of the electric toothbrush in a direction perpendicular to the first plane from deviating too much from the axis direction of the brush handle, thereby improving the stability of the electric toothbrush when placed.

[0019] In some embodiments, the light-transmitting piece includes a first portion opposite the display screen and a second portion surrounding the first portion, and the inner surface of the second portion protrudes relative to the handle barrel by a height not greater than the height by which the display screen protrudes relative to the handle barrel.

[0020] Specifically, the light-transmitting piece includes a first part opposite to the display screen and a second part surrounding the first part. The first part is used for directly transmitting the light emitted by the display screen, ensuring the clear visibility of the display information. The inner surface of the second part has a protruding height relative to the handle barrel that is not greater than the protruding height of the display screen relative to the handle barrel. Thus, the display content of the display screen is not easily blocked by the display platform, and the user can see the display content of the display screen through the second part.

[0021] In some embodiments, the display screen is attached to the inner surface of the light-transmitting piece close to the display screen.

[0022] In some embodiments, the light-transmitting piece is provided with a loading groove close to the inner surface of the display screen, and the display screen is at least partially installed in the loading groove.

[0023] Specifically, the loading groove is used for installing the display screen, which can ensure the accurate alignment of the display screen on the inner surface of the light-transmitting piece, avoid the position deviation or inclination of the display screen during the installation process, simplify the assembly process in production, and improve the assembly efficiency. The accurate alignment of the display screen on the inner surface of the light-transmitting piece enables the light to be transmitted to the outside through the light-transmitting piece, avoiding the light from being emitted to other positions except the light-transmitting piece.

[0024] In some embodiments, the display part further includes a reinforcing part provided on the display platform, the reinforcing part is attached to at least part of the inner wall of the display platform, and the reinforcing part is connected with the display platform and / or the body part.

[0025] The reinforcing part is connected with the display platform, which can avoid the deformation of the display platform caused by external pressure or impact, thereby ensuring the installation stability between the display screen and the light-transmitting piece and maintaining the correct alignment of the display screen. The connection of the reinforcing part with the display platform can also reduce the amplitude of vibration transmitted to the display platform, avoiding the loosening or displacement of the display screen caused by vibration. The connection of the reinforcing part with the display platform can disperse the stress through the handle barrel in the case of impact on the electric toothbrush, thereby reducing the stress on the display platform and the reinforcing part, improving the impact resistance of the reinforcing part and the display platform, and prolonging the service life. The connection of the reinforcing part with the handle barrel can also limit the relative displacement between the display platform and the handle barrel, avoiding the loosening or misalignment of the display platform and the handle barrel caused by long-term use or vibration.

[0026] In some embodiments, the display platform and the reinforcing part jointly form a first installation groove, the light-transmitting piece is accommodated in the first installation groove, and the peripheral side surface of the light-transmitting piece abuts against the inner wall of the first installation groove.

[0027] Specifically, the display table and the reinforcing part jointly form the first mounting slot, and the first mounting slot can have a rectangular, circular or other shape. Preferably, the shape and size of the first mounting slot match the outer contour of the light-transmitting piece, thereby further improving the fixation and support of the light-transmitting piece by the first mounting slot. The circumferential surface of the light-transmitting piece abuts against the inner wall of the first mounting slot, so that the light-transmitting piece is not easily displaced, avoiding displacement or loosening, and further ensuring that light can effectively pass through the light-transmitting piece, thereby improving the light-transmitting performance of the display table. The first mounting slot also has a positioning effect, facilitating the installation of the light-transmitting piece.

[0028] In some embodiments, the reinforcing part is provided with a second mounting slot, the second mounting slot is in communication with the first mounting slot, and the display screen is accommodated in the second mounting slot.

[0029] Specifically, the reinforcing part is provided with a second mounting slot, and the second mounting slot can have a rectangular, circular or other shape. Preferably, the shape and size of the second mounting slot match the outer contour of the display screen, thereby further improving the fixation and support of the display screen by the second mounting slot. The display screen is accommodated in the second mounting slot, so that the light-transmitting piece is not easily displaced, further ensuring that light emitted by the display screen can be emitted to the light-transmitting piece, thereby improving the light-transmitting performance of the display table. The second mounting slot also has a positioning effect, facilitating the installation of the display screen.

[0030] In some embodiments, the brush handle further comprises a buffer piece, which is arranged between the inner wall surface of the second mounting slot and the display screen.

[0031] In some embodiments, the buffer piece is arranged between the circumferential surface of the display screen and the side surface of the second mounting slot. In this way, the buffer piece can play a buffering role in the case that the electric toothbrush is subjected to external forces, dispersing and absorbing the forces, thereby reducing the direct damage of the forces to the circumferential surface of the display screen and the side surface of the second mounting slot.

[0032] In other embodiments, the buffer piece is arranged between the second surface of the display screen and the bottom surface of the second mounting slot. In this way, the buffer piece can play a buffering role in the case that the electric toothbrush is subjected to external forces, dispersing and absorbing the forces, thereby reducing the direct damage of the forces to the second surface of the display screen and the bottom surface of the second mounting slot.

[0033] The electric toothbrush provided by the embodiments of the present application comprises the brush handle and the electric toothbrush head according to any one of the above embodiments, and the electric toothbrush head is installed on the brush handle.

[0034] In the electric toothbrush of this application embodiment, the projection of the display surface onto the first plane is a first region, and the projection of the handle tube onto the first plane is a second region. A portion of the first region is located outside the second region. Therefore, the design size of the display surface can exceed the size limit of the handle tube. That is, compared to the first region being located within the second region, the size of the display surface is larger, which makes it easier for the user to observe the displayed content and improves the user experience.

[0035] 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

[0036] 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:

[0037] Figure 1 This is a three-dimensional structural schematic diagram of an electric toothbrush according to some embodiments of this application;

[0038] Figure 2 yes Figure 1 The diagram shown is a three-dimensional exploded view of an electric toothbrush.

[0039] Figure 3 yes Figure 1 A cross-sectional schematic diagram of an electric toothbrush is shown.

[0040] Figure 4 yes Figure 3 The enlarged schematic diagram shown at point IV in the middle;

[0041] Figure 5 This is a three-dimensional structural schematic diagram of an electric toothbrush according to other embodiments of this application;

[0042] Figure 6 yes Figure 5 The diagram shown is a three-dimensional exploded view of an electric toothbrush.

[0043] Figure 7 yes Figure 5 A cross-sectional schematic diagram of an electric toothbrush is shown.

[0044] Figure 8 yes Figure 7 The enlarged schematic diagram shown at point VIII.

[0045] Explanation of key component symbols:

[0046] Electric toothbrush 100;

[0047] Brush handle 10, handle cylinder 111, display part 113, display surface 1130, display platform 1131, connecting end 11311, free end 11312, mounting cavity 11313, first mounting part 11317, second mounting part 11318, reinforcing part 1134, first mounting groove 1135, second mounting groove 1136, mechanism 13, motor 131, output shaft 133, light-transmitting element 15, outer surface 151, first part 1511, second part 1513, inner surface 152, loading groove 153, display screen 17, first surface 173, second surface 175;

[0048] Electric toothbrush head 30, bristles 31, handle 33; buffer 54; seal 71, axial direction X. Detailed Implementation

[0049] 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.

[0050] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation", "connection" and "linkage" should be interpreted broadly. In one example, they can be a fixed connection, a detachable connection, or an integral connection; they can be a mechanical connection, an electrical connection, or a connection that allows communication between them; they can be a direct connection or an indirect connection through an intermediate medium; they can be the internal connection of two elements or the interaction between two elements.

[0051] In related technologies, electric toothbrushes include a brush head and a handle. The handle includes a barrel with a display surface that displays relevant information about the electric toothbrush. However, due to the limited size of the barrel, the display surface is relatively small, making it difficult for users to see the displayed content. To resolve this issue, please refer to [link to relevant documentation]. Figures 1 to 4 ,or Figures 5 to 8 This application provides a brush handle 10 and an electric toothbrush 100.

[0052] Please see Figures 1 to 4 ,or Figures 5 to 8The electric toothbrush 100 of this application includes an electric toothbrush head 30 and a handle 10, with the electric toothbrush head 30 mounted on the handle 10. Specifically, the handle 10 can drive the electric toothbrush head 30 to vibrate at a high frequency, thus allowing the electric toothbrush 100 to clean areas in the mouth that need cleaning through the high-frequency vibration of the electric toothbrush head 30. Areas in the mouth that need cleaning may include, but are not limited to, the tooth surfaces, interdental spaces, and gums. The electric toothbrush head 30 and the handle 10 can be connected in a detachable manner, which facilitates the replacement of electric toothbrush heads 30 with different models or materials; furthermore, when the cleaning effect of the electric toothbrush head 30 decreases due to prolonged use, it is easy to replace it with a new one, thereby ensuring the cleaning effect of the electric toothbrush 100.

[0053] 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 electric toothbrush head 30 includes bristles 31 and a handle 33. The bristles 31 are used to clean teeth. The material of the bristles 31 may be, but is not limited to, nylon, rubber, or boar bristles. Preferably, the bristles 31 may have good toughness and elasticity, thereby enabling better cleaning of the areas to be cleaned in the oral cavity. The handle 10 includes a motor 13, which is equipped with a motor 131. One end of the handle 33 is detachably connected to the output shaft 133 of the motor 131, and the other end is provided with bristles. The handle 33 is generally elongated, which facilitates the insertion of the handle 33 into the oral cavity so that the bristles 31 can reach the areas to be cleaned in the oral cavity, thereby ensuring the cleaning effect of the electric toothbrush 100.

[0054] Since the electric toothbrush 100 in this embodiment includes a handle 10, it is understood that the electric toothbrush 100 has at least the same beneficial effects as the handle 10. Therefore, for the beneficial effects of the electric toothbrush 100, please refer to the beneficial effects of the handle 10 described below.

[0055] Please see Figures 1 to 4 ,or Figures 5 to 8 This application provides a brush handle 10. The brush handle 10 includes a handle cylinder 111, a display section 113 mounted on the handle cylinder 111, and a mechanism 13. The display section 113 includes a display surface 1130, the plane on which the orthographic projection of the display surface 1130 is located is a first plane, the projection of the display surface 1130 onto the first plane is a first region, the projection of the handle cylinder 111 onto the first plane is a second region, and a portion of the first region is located outside the second region. The mechanism 13 is disposed inside the handle cylinder 111. The display section 113 also includes a display platform 1131, a light-transmitting element 15, and a display screen 17. The display screen 17 and the light-transmitting element 15 are both mounted on the display platform 1131, and the light emitted from the display screen 17 can pass through the light-transmitting element 15 to the outside of the handle cylinder 111.

[0056] The brush handle 10 is a structure for the user to hold, enabling the user to operate and use the various functions of the electric toothbrush 100. The brush handle 10 is typically cylindrical to provide a comfortable grip. The brush handle 10 may include an anti-slip structure to prevent the electric toothbrush 100 from slipping from the hand during use. It is understood that the brush handle 10 may also have a regular or irregular structure other than a cylindrical one; this application does not impose any limitations on this.

[0057] The handle 111 is a structure used to house the motor 13 and other components of the electric toothbrush 100. The handle 111 is generally a shell structure with a length greater than its width and diameter, and its length is aligned with the axial direction of the output shaft 133 (the output shaft 133 of the motor 131). A through-hole is provided at one end of the handle 111 along the axial direction of the output shaft 133 for the output shaft 131 to extend out. The handle 111 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 one example, the handle 111 can be made of metallic materials, which increases its structural strength and prevents damage during operation of the electric toothbrush 100, thereby improving the stability and reliability of the electric toothbrush 100. In another example, the handle 111 can be made of non-metallic materials, which makes it lighter, thus contributing to the portability of the brush handle 10 and the electric toothbrush 100.

[0058] The display unit 113 is mounted on the handle barrel 111. In some embodiments, the handle barrel 111 and the display unit 113 are an integral structure, that is, the handle barrel 111 and the display unit 113 are a single unit, which can improve the bonding strength between the handle barrel 111 and the display unit 113, prevent the handle barrel 111 and the display unit 113 from separating during the operation of the brush handle 10, thereby ensuring the stability and reliability of the brush handle 10 during operation. In other embodiments, the handle barrel 111 and the display unit 113 are separate structures, that is, the handle barrel 111 and the display unit 113 are two different structures. In one example, the handle barrel 111 and the display unit 113 can be joined together by a detachable connection method, including but not limited to snap-fit ​​connections or threaded connections. In another example, the handle barrel 111 and the display unit 113 can be joined together by a non-detachable connection method, including but not limited to bonding or welding.

[0059] The display surface 1130 of the display unit can be used to display cleaning information, including but not limited to cleaning duration, cleaning mode, and cleaning area. The display surface 1130 also provides interactive functions, allowing users to switch between different cleaning modes and adjust cleaning intensity via touch or buttons. In some embodiments of this application, the outer surface 151 of the light-transmitting element 15 is the display surface 1130. The orthographic projection of the display surface 1130 can be: during projection, under parallel light illumination, the plane on which the projection of the display surface 1130 falls, perpendicular to the projected light. The projection of the display surface 1130 onto the first plane is the first area, and the projection of the handle 111 onto the first plane is the second area. A portion of the first area is located outside the second area. Therefore, the design size of the display surface 1130 can exceed the size limit of the handle 111; that is, compared to the first area being located within the second area, the display surface 1130 is larger, making it easier for users to observe the displayed content and improving the user experience.

[0060] In addition, in some embodiments, the extension direction of the bristles 31 is approximately the same as the axial direction A of the display stand 1131. Thus, when the electric toothbrush 100 is placed on a structure with a resting surface, such as a desktop, and the outer peripheral surface of the display stand 1131 is in contact with the resting surface, the extension direction of the bristles 31 has a certain angle with the plane where the resting surface is located. That is, when the electric toothbrush 100 is placed on a structure with a resting surface, such as a desktop, the bristles 31 will not come into contact with the resting surface, thereby preventing the bristles 31 from being contaminated.

[0061] In some embodiments, the display platform 1131 protrudes away from the handle cylinder 111 in a direction perpendicular to the first plane. In other words, the display platform 1131 protrudes from the handle cylinder 111 in a direction perpendicular to the first plane, thereby allowing the design size of the display platform 1131 to exceed the size limitation of the handle cylinder 111, thus increasing the size of the display platform 1131 and consequently making the display surface 1130 larger, ensuring that the user can clearly observe the displayed content on the display surface 1130. Furthermore, since the display platform 1131 is located inside the handle cylinder 111, the internal space of the handle cylinder 111 is not occupied by the display platform 1131, allowing the handle cylinder 111 to accommodate more components.

[0062] The mechanism 13 is a structure used to drive the electric toothbrush head 30 to vibrate. After the user turns on the electric toothbrush 100, the output shaft 133 of the motor 131 in the mechanism 13 will start to vibrate, and drive the brush head 31 to vibrate through the part connected to the brush head 31, so that the teeth are cleaned by the bristles 31 of the vibrating brush head 31. At this time, the user usually needs to obtain information about the human characteristics of the brush head 31 and the surrounding oral cavity to locate the area of ​​teeth being brushed.

[0063] The light-transmitting element 15 is disposed opposite to the display screen 17. The light-transmitting element 15 can be made of materials such as glass, plastic, or crystal. The light-transmitting element 15 can act as a barrier between the external environment and the interior of the handle cylinder 111, preventing dust, fluid, or other dirt from entering the interior of the handle cylinder 111 and protecting the display screen 17 from contamination. The light-transmitting element 15 can also have certain optical properties, allowing light emitted from the display screen 17 to pass through the light-transmitting element 15 and reach the outside of the handle cylinder 111 when the display screen 17 is in operation, and be received by the human eye. There can be one or multiple light-transmitting elements 15. In the embodiments of this application, there is one light-transmitting element 15. In embodiments where there are multiple light-transmitting elements 15, the size, shape, or light transmittance of the multiple light-transmitting elements 15 can be different or the same. Furthermore, the light-transmitting element 15 can be coated with coatings of different optical properties, such as anti-reflective coatings to improve light transmittance, anti-reflective coatings to reduce stray reflections, filter coatings to filter light of specific wavelengths, and anti-fogging coatings to prevent fogging.

[0064] In the brush handle 10 of this application embodiment, the projection of the display surface 1130 onto the first plane is a first region, and the projection of the handle cylinder 111 onto the first plane is a second region. Part of the first region is located outside the second region. Therefore, the design size of the display surface 1130 can exceed the size limit of the handle cylinder 111. That is, compared to the first region being located within the second region, the size of the display surface 1130 is larger, which makes it easier for the user to observe the display content of the display surface 1130 and improves the user experience.

[0065] The brush handle 10 will be further explained below with reference to the attached drawings.

[0066] Please see Figures 1 to 4 ,or Figures 5 to 8 In some embodiments, the projection of the display screen 17 onto the first plane is located within the projection area of ​​the light-transmitting element 15 onto the first plane. Therefore, the size of the light-transmitting element 15 is larger than the size of the display screen 17, ensuring that the light emitted from the display screen 17 is not obstructed. That is, all light emitted from the display screen 17 can pass through the light-transmitting element 15 to the outside, thereby expanding the user's viewing angle and allowing the user to clearly observe the content of the display screen 17 from different angles.

[0067] In some embodiments, the minimum distance between the outer contour of the projection of the display screen 17 onto the first plane and the outer contour of the projection of the light-transmitting element 15 onto the first plane is greater than or equal to 1 mm. Specifically, the minimum distance between the outer contour of the projection of the display screen 17 onto the first plane and the outer contour of the projection of the light-transmitting element 15 onto the first plane can be any value greater than or equal to 1 mm, such as 1 mm, 2 mm, 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, or 10 mm, or any value between any two values ​​greater than or equal to 1 mm.

[0068] If the minimum distance between the outer contour of the projection of the display screen 17 onto the first plane and the outer contour of the projection of the light-transmitting element 15 onto the first plane is less than 1 mm, the distance between the outer contours of the display screen 17 and the light-transmitting element 15 is too small. When the user is not directly facing the light-transmitting element 15 to observe the display screen 17, the light emitted from the edge of the display screen 17 may be blocked by the display stand 1131, causing the displayed content to be unobservable by the user, thus affecting the user experience. In some embodiments of this application, the minimum distance between the outer contour of the projection of the display screen 17 onto the first plane and the outer contour of the projection of the light-transmitting element 15 onto the first plane is greater than or equal to 1 mm. This ensures that the light from the display screen 17 passes through the light-transmitting element 15, making it easy for the user to see the content displayed on the display screen 17. That is, even when the user is not directly facing the light-transmitting element 15 to observe the display screen 17, the user can still see the content displayed on the display screen 17, reducing the possibility of the light emitted from the edge of the display screen 17 being blocked by the display stand 1131, and improving the user experience.

[0069] Please see Figure 2 and Figure 3 ,or Figure 6 and Figure 7 In some embodiments, the display platform 1131 includes a connecting end 11311 and a free end 11312 opposite to the connecting end 11311, the connecting end 11311 being connected to the handle sleeve 111. A light-transmitting element 15 is disposed within the display platform 1131 from the free end 11312, and the light-transmitting element 15 is installed within the free end 11312.

[0070] Specifically, in some embodiments, the free end 11312 protrudes away from the handle tube 111 in a direction perpendicular to the first plane. The free end 11312 is provided with a mounting port for the light-transmitting element 15 to be mounted inside the display stand 1131 from the free end 11312. In this way, the light-transmitting element 15 can be fixed on the display stand 1131. When the electric toothbrush 100 is dropped or impacted, the free end 11312 can absorb part of the impact force, protecting the light-transmitting element 15 and preventing it from breaking due to external impact.

[0071] In some embodiments, the light-transmitting element 15 is sealed to the free end 11312. This prevents external water or dust from entering the display section 113 through the gap between the light-transmitting element 15 and the free end 11312, which could damage the internal structural components of the display section 113, thereby ensuring the stability of the brush handle 10 and the electric toothbrush 100 during operation.

[0072] Please see Figures 2 to 4 ,or Figures 6 to 8 In some embodiments, the light-transmitting element 15 is sealed to the free end 11312 and exposed to the outside of the display platform 1131. Specifically, the light-transmitting element 15 is mounted on the free end 11312 and exposed to the outside of the display platform 1131, making it easier to install and remove. Furthermore, since a portion of the light-transmitting element 15 is exposed to the outside of the display platform 1131, the display surface 1130 is also exposed to the outside of the display platform 1131, thereby reducing the possibility of the display platform 1131 obstructing the display surface 1130 and ensuring that the user can observe the displayed information on the display surface 1130.

[0073] In some embodiments, the minimum distance between the handle cylinder 111 and the light-transmitting element 15 is no more than 5 mm.

[0074] Specifically, the distance between the handle barrel 111 and the light-transmitting element 15 can be any value not exceeding 5mm, such as 5mm, 4.8mm, 4.7mm, 4.2mm, 3.9mm, 3.4mm, 3.1mm, 2.9mm, 2.4mm, or 1.5mm, or any value between any two of these values. If the minimum distance between the handle barrel 111 and the light-transmitting element 15 is greater than 5mm, the distance between the light-transmitting element 15 and the handle barrel 111 is too large, which will cause a large shift in the center of gravity of the electric toothbrush 100 in the direction perpendicular to the first plane, making the electric toothbrush 100 unstable when placed. In some embodiments of this application, the distance by which the light-transmitting element 15 extends beyond the handle barrel 111 is no more than 5mm, which can prevent the center of gravity of the display platform 1131 from shifting and ensure the stability of the electric toothbrush 100 when placed.

[0075] Please see Figure 2 and Figure 3 ,or Figure 6 and Figure 7 In some embodiments, the display stand 1131 is provided with a mounting cavity 11313, and the display screen 17 is housed in the mounting cavity 11313.

[0076] Specifically, in some embodiments, the mounting cavity 11313 is in communication with the space inside the handle cylinder 111. On the one hand, the mounting cavity 11313 provides space for components such as the display screen 17, reducing interference from the external environment on the display screen 17. On the other hand, the display screen 17 is installed in the mounting cavity 11313, which reduces the distance between the display screen 17 and the light-transmitting element 15 compared to the space inside the handle tube 111, making it easier for the user to observe the light emitted by the display screen 17. Furthermore, since the mechanism 13 is housed inside the handle tube 111 and the display screen 17 is housed in the mounting cavity 11313, the display screen 17 does not occupy the space inside the handle tube 111, thereby reducing the size of the handle tube 111 and making it easier for the user to hold. Moreover, when the electric toothbrush 100 is working, the mechanism 13 and the display screen 17 are housed in different spaces, maintaining a certain distance, which can prevent the display information from becoming blurry due to the vibration of the mechanism 13 and also prevent the display screen 17 from shifting due to vibration, thereby improving the display effect and extending the service life of the display screen 17.

[0077] In some embodiments, the display stand 1131 and the handle tube 111 are integrally formed. That is, the display stand 1131 and the handle tube 111 are a single structure, which can improve the bonding strength between the display stand 1131 and the handle tube 111, prevent the display stand 1131 and the handle tube 111 from separating during the operation of the electric toothbrush 100, and thus ensure the stability and reliability of the electric toothbrush 100.

[0078] In other embodiments, the display stand 1131 and the handle sleeve 111 are separately formed, that is, the display stand 1131 and the handle sleeve 111 are two different structures. In one example, the display stand 1131 and the handle sleeve 111 and / or the mechanism 13 are connected by a detachable connection method, including but not limited to screw connection, snap connection, or threaded connection. In another example, the display stand 1131 and the handle sleeve 111 and / or the mechanism 13 are connected by a non-detachable connection method, including but not limited to bonding or welding. Separate forming facilitates disassembly and replacement of the display stand 1131 and the handle sleeve 111.

[0079] In some embodiments, the display stand 1131 and the handle cylinder 111 are formed separately, and a sealing element 71 is provided between the display stand 1131 and the handle cylinder 111.

[0080] The seal 71 can be made of various materials such as rubber, silicone, and polypropylene. There can be one or more seals 71, which is not limited in this application. The seal 71 can be molded separately and then fitted onto the display stand 1131 or the handle sleeve 111, or it can be fitted onto the display stand 1131 or the handle sleeve 111 in a form such as overmolding. The seal 71 can seal the gap between the outer peripheral surface of the display stand 1131 and the handle sleeve 111, preventing fluid from flowing into the handle sleeve 111 through this gap, thus improving the waterproofness of the electric toothbrush 100. Furthermore, the seal 71 is low in cost and does not occupy additional installation space.

[0081] Please see Figures 1 to 4 ,or Figures 5 to 8 In some embodiments, the height by which the display platform 1131 protrudes relative to the handle sleeve 111 in a direction perpendicular to the first plane is greater than or equal to 2.5 mm and less than or equal to 10 mm. Specifically, the height by which the display platform 1131 protrudes relative to the handle sleeve 111 in a direction perpendicular to the first plane can be any one of 2.5 mm, 2.8 mm, 3.5 mm, 4 mm, 5.5 mm, 6 mm, 6.5 mm, 7 mm, 8.5 mm, or 10 mm, or any value between any two of these values.

[0082] If the height of the protrusion of the display stand 1131 relative to the handle cylinder 111 is less than 2.5mm, the depth of the mounting cavity 11313 is limited, which limits the size of the installation space (i.e., the mounting cavity 11313) for the display screen 17, making it difficult to install the display screen 17. If the height of the protrusion of the display stand 1131 relative to the handle cylinder 111 is greater than 10mm, the height of the display stand 1131 from the handle cylinder 111 is too large. When the electric toothbrush 100 falls, the display stand 1131 is likely to hit the ground first, making it easy to be damaged. In addition, the excessive height of the display stand 1131 from the handle cylinder 111 may cause the center of gravity of the electric toothbrush 100 in the direction perpendicular to the first plane to deviate too much from the axis direction X of the brush handle 10, affecting the stability of the electric toothbrush 100 when placed.

[0083] The height of the protrusion of the display stand 1131 relative to the handle tube 111 is greater than or equal to 2.5 mm and less than or equal to 10 mm, which can provide sufficient installation space for the display screen 17; it can also make the brush handle 10 compact, so that when the electric toothbrush 100 is dropped, the display stand 1131 is less likely to hit the ground first, reducing the risk of damage to the electric toothbrush 100 caused by accidental drops or impacts; it can also prevent the center of gravity of the electric toothbrush 100 from deviating too much from the axis direction X of the brush handle 10 in the direction perpendicular to the first plane, thereby improving the stability of the electric toothbrush 100 when placed.

[0084] Please see Figure 2 and Figure 3 ,or Figure 6 andFigure 7 In some embodiments, the light-transmitting element 15 includes a first portion 1511 opposite to the display screen 17 and a second portion 1513 surrounding the first portion 1511. The inner surface 152 of the second portion 1513 (the side opposite to the outer surface 151 of the light-transmitting element 15) protrudes from the handle tube 111 at a height not greater than the height of the display screen 17 protruding from the handle tube 111.

[0085] Specifically, the light-transmitting element 15 includes a first portion 1511 opposite to the display screen 17 and a second portion 1513 surrounding the first portion 1511. The first portion 1511 is used to directly transmit the light emitted from the display screen 17, ensuring that the displayed information is clearly visible. The inner surface 152 of the second portion 1513 protrudes no more than the height of the display screen 17 protruding from the handle sleeve 111. Therefore, the display content of the display screen 17 is not easily obstructed by the display stand 1131, and the user can see the display content of the display screen 17 through the second portion 1513.

[0086] Please combine Figure 4 or Figure 8 In some embodiments, the display screen 17 is attached to the inner surface 152 of the light-transmitting element 15 near the display screen 17. Further, in some embodiments, the light-transmitting element 15 is provided with a loading groove 153 near the inner surface 152 of the display screen 17, and the display screen 17 is at least partially mounted in the loading groove 153.

[0087] Specifically, the loading slot 153 is used to install the display screen 17, ensuring that the display screen 17 is accurately aligned with the inner surface 152 of the light-transmitting element 15. This prevents the display screen 17 from shifting or tilting during installation, simplifies the assembly process in production, and improves assembly efficiency. The accurate alignment of the display screen 17 with the inner surface 152 of the light-transmitting element 15 allows light to be transmitted through the light-transmitting element 15 to the outside, preventing light from escaping to other locations besides the light-transmitting element 15.

[0088] In some embodiments, the display screen 17 is connected to the light-transmitting element 15 near the inner surface 152 of the display screen 17.

[0089] Specifically, the display screen 17 is connected to the light-transmitting element 15 near the inner surface 152 of the display screen 17, which can reduce the gap between the display screen 17 and the light-transmitting element 15, prevent light from being refracted or reflected between the surface of the display screen 17 near the light-transmitting element 15 and the inner surface 152 of the display screen 17, avoid uneven light scattering, and ensure the uniformity of light propagation.

[0090] In some embodiments, the display screen 17 and the light-transmitting element 15 are connected near the inner surface 152 of the display screen 17 by a connecting optical adhesive.

[0091] Specifically, the optical adhesive has good bonding strength, which makes the connection between the display screen 17 and the light-transmitting element 15 more secure, preventing the display screen 17 and / or the light-transmitting element 15 from shifting or falling off due to vibration or impact. In addition, the optical adhesive has good optical properties, which helps the light emitted by the display screen 17 to be transmitted to the light-transmitting element 15, improving the light transmittance, thereby making the displayed content of the display screen 17 clearer and more visible.

[0092] Please see Figures 6 to 8 In some embodiments, the display unit 113 further includes a reinforcing part 1134 disposed on the display platform 1131, the reinforcing part 1134 being in contact with at least a portion of the inner wall of the display platform 1131, and the reinforcing part 1134 being connected to the display platform 1131 and / or the handle cylinder 111.

[0093] Specifically, the reinforcing part 1134 and the display platform 1131 are separate structures, meaning they are two distinct structures. In one example, the reinforcing part 1134 and the display platform 1131 can be joined together using a detachable connection method, including but not limited to snap-fit ​​connections or threaded connections. In another example, the reinforcing part 1134 and the display platform 1131 can be joined together using a non-detachable connection method, including but not limited to adhesive bonding or welding. It is understood that when the reinforcing part 1134 is connected to the handle sleeve 111, the connection method can be either detachable or non-detachable. The connection method between the reinforcing part 1134 and the display platform 1131 can differ from the connection method between the reinforcing part 1134 and the handle sleeve 111.

[0094] In some embodiments, the reinforcing part 1134 may be made of a rigid material, such as PP, ABS, or PBT plastic. The material of the reinforcing part 1134 may be the same as that of the display platform 1131; for example, both the reinforcing part 1134 and the display platform 1131 may be made of PP plastic. Alternatively, the material of the reinforcing part 1134 and the display platform 1131 may be different; for example, the reinforcing part 1134 and the display platform 1131 may be made of PP plastic, while the display platform 1131 may be made of ABS plastic.

[0095] The reinforcing part 1134 is connected to the display platform 1131, which can prevent the display platform 1131 from deforming due to external pressure or impact, thereby ensuring the installation stability between the display screen 17 and the light-transmitting element 15 and maintaining the correct alignment of the display screen 17. The connection between the reinforcing part 1134 and the display platform 1131 also reduces the amplitude of vibration transmitted to the display platform 1131, preventing the display screen 17 from loosening or shifting due to vibration. The connection between the reinforcing part 1134 and the display platform 1131 can disperse stress through the handle cylinder 111 when the electric toothbrush 100 is subjected to impact, reducing the force on the display platform 1131 and the reinforcing part 1134, thereby improving the impact resistance of the reinforcing part 1134 and the display platform 1131 and extending their service life. The connection between the reinforcing part 1134 and the handle cylinder 111 also limits the relative displacement between the display platform 1131 and the handle cylinder 111, preventing loosening or misalignment of the display platform 1131 and the handle cylinder 111 due to long-term use or vibration.

[0096] Please continue reading. Figures 6 to 8 In some embodiments, the display platform 1131 and the reinforcing part 1134 together form a first mounting groove 1135, and the light-transmitting element 15 is housed in the first mounting groove 1135, with the peripheral side of the light-transmitting element 15 abutting against the inner wall of the first mounting groove 1135.

[0097] Specifically, the display platform 1131 and the reinforcing part 1134 together form a first mounting groove 1135, the cross-section of which can be rectangular, circular, or other shapes. Preferably, the shape and size of the first mounting groove 1135 match the outer contour of the light-transmitting element 15, thereby further enhancing the fixation and support of the light-transmitting element 15 by the first mounting groove 1135. The peripheral side of the light-transmitting element 15 abuts against the inner wall of the first mounting groove 1135, making it difficult for the light-transmitting element 15 to shift, preventing displacement or loosening, and further ensuring that light can effectively pass through the light-transmitting element 15, thus improving the light transmission performance of the display platform 1131. The first mounting groove 1135 also has a positioning effect, facilitating the installation of the light-transmitting element 15.

[0098] In some embodiments, the reinforcing part 1134 is provided with a second mounting groove 1136, which communicates with the first mounting groove 1135, and the display screen 17 is housed in the second mounting groove 1136.

[0099] Specifically, the reinforcing part 1134 is provided with a second mounting groove 1136, the cross-section of which can be rectangular, circular, or other shapes. Preferably, the shape and size of the second mounting groove 1136 match the outer contour of the display screen 17, thereby further enhancing the fixation and support of the second mounting groove 1136 for the display screen 17. The display screen 17 is housed in the second mounting groove 1136, making it less prone to displacement of the light-transmitting element 15, further ensuring that the light emitted by the display screen 17 can reach the light-transmitting element 15, thus improving the light transmission performance of the display stand 1131. The second mounting groove 1136 also has a positioning effect, facilitating the installation of the display screen 17.

[0100] Please see Figures 2 to 4 In some embodiments, the free end 11312 of the display platform 1131 is provided with a first mounting part 11317, the first mounting part 11317 is provided with a first mounting groove 1135, the light-transmitting element 15 is accommodated in the first mounting groove 1135, and the peripheral side of the light-transmitting element 15 abuts against the inner wall of the first mounting groove 1135.

[0101] Specifically, the free end 11312 of the display platform 1131 is provided with a first mounting portion 11317, and the first mounting portion 11317 is provided with a first mounting groove 1135, that is, the first mounting groove 1135 is provided on the display platform 1131. The first mounting portion 11317 can install and fix the light-transmitting component 15. The inner wall of the first mounting groove 1135 can provide support for the light-transmitting component 15, making it difficult for the light-transmitting component 15 to shift. The first mounting groove 1135 also has a positioning effect, facilitating the installation of the light-transmitting component 15. The cross-section of the first mounting groove 1135 can be rectangular, circular, or other shapes. Preferably, the shape and size of the first mounting groove 1135 match the outer contour of the light-transmitting component 15, thereby further improving the fixation and support of the first mounting groove 1135 for the light-transmitting component 15.

[0102] In some embodiments, the free end 11312 of the display stand 1131 is further provided with a second mounting part 11318, the second mounting part 11318 is provided with a second mounting groove 1136, the second mounting groove 1136 communicates with the first mounting groove 1135, and the display screen 17 is accommodated in the second mounting groove 1136.

[0103] Specifically, the free end 11312 of the display platform 1131 is provided with a second mounting portion 11318, and the second mounting portion 11318 is provided with a second mounting groove 1136, that is, the second mounting groove 1136 is provided on the display platform 1131. The second mounting portion 11318 can install and fix the display screen 17. The inner wall of the second mounting groove 1136 can provide support for the display screen 17, making it less likely for the display screen 17 to shift. The second mounting groove 1136 also has a positioning effect, facilitating the installation of the display screen 17. The cross-section of the second mounting groove 1136 can be rectangular, circular, or other shapes. Preferably, the shape and size of the second mounting groove 1136 match the outer contour of the display screen 17, thereby further improving the fixation and support of the second mounting groove 1136 for the display screen 17.

[0104] Please continue reading. Figures 2 to 4 In some embodiments, the display screen 17 includes a first surface 173 and a second surface 175 facing away from each other, and a peripheral side surface connecting the first surface 173 and the second surface 175. The inner wall surface of the second mounting groove 1136 includes a side surface and a bottom surface that are in contact with each other. The peripheral side surface of the display screen 17 is spaced apart from the side surface of the second mounting groove 1136.

[0105] Specifically, the spacing between the peripheral side of the display screen 17 and the side of the second mounting groove 1136 can reduce the direct contact between the display screen 17 and the inner wall of the mounting groove, thereby reducing the friction and wear between the display screen 17 and the second mounting groove 1136 and improving the service life of the display screen 17 and the second mounting groove 1136.

[0106] Please see Figures 2 to 4 In some embodiments, the brush handle 10 further includes a buffer 54 disposed between the inner wall of the second mounting groove 1136 and the display screen 17. It should be noted that in some embodiments, the buffer 54 can be made of a soft and elastic material, 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 buffer 54 is able to recover its original shape after being subjected to force, effectively absorbing and dispersing the force.

[0107] Specifically, in some embodiments, the buffer 54 is disposed between the peripheral side of the display screen 17 and the side of the second mounting groove 1136. This enables the electric toothbrush 100 to buffer against external forces, dispersing and absorbing the force, and reducing direct damage to the peripheral side of the display screen 17 and the side of the second mounting groove 1136.

[0108] In other embodiments, a buffer 54 is disposed between the second surface 175 of the display screen 17 and the bottom surface of the second mounting groove 1136. This allows the electric toothbrush 100 to buffer against external forces, dispersing and absorbing the force, and reducing direct damage to the second surface 175 of the display screen 17 and the bottom surface of the second mounting groove 1136.

[0109] 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. A brush handle, characterized in that, include: The handle and the display unit mounted on the handle, the display unit includes a display surface, the plane on which the orthographic projection of the display surface is located is a first plane, the projection of the display surface on the first plane is a first region, the projection of the handle on the first plane is a second region, and a portion of the first region is located outside the second region; The movement is housed within the handle sleeve; The display unit further includes a display platform, a light-transmitting element, and a display screen, wherein the display screen and the light-transmitting element are both mounted on the display platform.

2. The brush handle according to claim 1, characterized in that, In a direction perpendicular to the first plane, the display platform protrudes away from the handle cylinder.

3. The brush handle according to claim 1, characterized in that, The projection of the display screen onto the first plane is located within the projection area of ​​the light-transmitting element onto the first plane.

4. The brush handle according to claim 3, characterized in that, The minimum distance between the outer contour of the projection of the display screen onto the first plane and the outer contour of the projection of the light-transmitting element onto the first plane is greater than or equal to 1 mm.

5. The brush handle according to claim 1, characterized in that, The display platform includes a connecting end and a free end opposite to the connecting end, and the connecting end is connected to the handle sleeve; The light-transmitting element is disposed within the display platform from the free end; or, The light-transmitting element is sealed to the free end, and the outer surface of the light-transmitting element is the display surface.

6. The brush handle according to claim 1, characterized in that, The minimum distance between the handle cylinder and the light-transmitting element is no more than 5mm.

7. The brush handle according to any one of claims 1-6, characterized in that, The display stand has a mounting cavity, and the display screen is housed in the mounting cavity.

8. The brush handle according to claim 7, characterized in that, The display platform and the handle cylinder are integrally formed; or... The display platform and the handle tube are separate parts, and the display platform and the handle tube and / or the mechanism are connected by at least one of the following methods: screw connection, threaded connection, bonding, welding.

9. The brush handle according to claim 7, characterized in that, Along a direction perpendicular to the first plane, the height of the display platform protruding relative to the handle tube is greater than or equal to 2.5 mm and less than or equal to 10 mm.

10. The brush handle according to claim 7, characterized in that, The light-transmitting element includes a first portion opposite to the display screen and a second portion surrounding the first portion, wherein the height of the inner surface of the second portion protruding relative to the handle tube is not greater than the height of the display screen protruding relative to the handle tube.

11. The brush handle according to claim 7, characterized in that, The display screen is attached to the inner surface of the light-transmitting element near the display screen.

12. The brush handle according to claim 7, characterized in that, The light-transmitting element has a loading groove on its inner surface near the display screen, and the display screen is at least partially mounted in the loading groove.

13. The brush handle according to claim 7, characterized in that, The display unit further includes a reinforcing part disposed on the display platform, the reinforcing part being in contact with at least a portion of the inner wall of the display platform, and the reinforcing part being connected to the display platform and / or the handle cylinder.

14. The brush handle according to claim 13, characterized in that, The display platform and the reinforcing part together form a first mounting groove, the light-transmitting element is housed in the first mounting groove, and the peripheral side of the light-transmitting element abuts against the inner wall of the first mounting groove.

15. The brush handle according to claim 14, characterized in that, The reinforcing part is provided with a second mounting groove, which is connected to the first mounting groove, and the display screen is housed in the second mounting groove.

16. The brush handle according to claim 15, characterized in that, The brush handle also includes a buffer, which is disposed between the inner wall of the second mounting groove and the display screen.

17. An electric toothbrush, characterized in that, include: The brush handle according to any one of claims 1-16, and An electric toothbrush head, which is mounted on the brush handle.

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