Brush handle and electric toothbrush

Abstract

The utility model discloses a brush handle and an electric toothbrush. The brush handle comprises a handle cylinder, and a display part and a movement which are arranged in the handle cylinder. The display part comprises a display table, a display screen and a light transmitting piece, and the display table protrudes in the direction away from the handle barrel; the display table further comprises a peripheral surface and a display surface, and the peripheral surface and the handle cylinder are opposite and jointly form a diversion trench; the light-transmitting piece is arranged on the display table, and the flow guide groove is used for guiding fluid along the display table towards the lateral direction away from the light-transmitting piece. The movement comprises a circuit board which is arranged in the handle cylinder; the display surface is the outer surface of the light-transmitting part, the orthographic projection of the display surface is a first plane, and the peripheral surface is the surface connecting the display surface and the handle cylinder. Under the condition that the fluid flows to the brush handle, the flow guide groove can guide the fluid along the display table towards the lateral direction far away from the light-transmitting piece, the possibility that the fluid gathers on the display area is reduced, and a user can clearly observe the content of the display screen through the light-transmitting piece.

Description

Technical Field

[0001] This application relates to the field of oral hygiene technology, and more specifically, to a brush handle and an electric toothbrush. Background Technology

[0002] An electric toothbrush consists of an electric toothbrush head and a handle. The motor and display screen in the handle are both mounted in the handle tube. The handle tube has a light-transmitting element that allows light emitted from the display screen to pass through. Because the light-transmitting element is located close to the brush head, during brushing, liquid will flow down the electric toothbrush shaft onto the handle, and then flow along the handle tube towards the light-transmitting element. This liquid flowing onto the light-transmitting element can affect the user's ability to see the content displayed on the screen, and there is also a risk that the liquid will flow into the handle tube and affect the normal operation of the motor. Utility Model Content

[0003] This application provides a brush handle and an electric toothbrush.

[0004] The brush handle provided in this application includes a handle barrel and a display section and a mechanism disposed on the handle barrel. The display section includes a display platform, a display screen, and a light-transmitting element. The display platform protrudes away from the handle barrel. The display platform also includes an outer peripheral surface and a display surface. The outer peripheral surface faces the handle barrel and together forms a guide groove. The light-transmitting element is disposed on the display platform, and the guide groove is used to guide fluid along the display platform laterally away from the light-transmitting element. The mechanism includes a circuit board disposed inside the handle barrel. The display surface is the outer surface of the light-transmitting element, and the orthographic projection of the display surface is a first plane. The outer peripheral surface is the surface connecting the display surface and the handle barrel.

[0005] In this application, when fluid flows onto the brush handle, the guide channel directs the fluid along the display platform away from the light-transmitting element, preventing fluid flowing from the mouth during brushing from reaching the light-transmitting element. This reduces the likelihood of fluid pooling on the display surface, allowing the user to clearly see the screen content through the light-transmitting element. Furthermore, the fluid flowing away from the light-transmitting element along the display platform also reduces the risk of fluid flowing into the handle barrel. This protects the electronic components inside the handle barrel from moisture or liquid damage, thereby improving the brush handle's durability and reliability.

[0006] In some embodiments, the outer peripheral surface is inclined relative to the axial direction of the display surface, and the outer peripheral surface is connected to the handle cylinder and forms the guide groove.

[0007] The outer peripheral surface of the display platform is inclined relative to the axial direction of the display surface, and the slope is greater than or equal to 0.5. The fluid is less likely to flow from the second surface of the handle cylinder to the outer peripheral surface of the display platform and then to the display surface, thus ensuring the light transmission effect of the light-transmitting component on the display screen.

[0008] In some embodiments, the minimum height of the protrusion of the display platform relative to the handle cylinder in the axial direction of the display surface is not less than 0.5mm, so that fluid does not easily flow from the handle cylinder to the display platform, resulting in a good display effect.

[0009] In some embodiments, the minimum thickness of the display stand is greater than or equal to 1 mm, which ensures that the display stand has a certain structural strength and is unlikely to suffer structural damage when subjected to external forces.

[0010] In some embodiments, the outer peripheral surface of the display stand is provided with a first buffer member, which can buffer the display stand when it is subjected to external forces, disperse and absorb the forces, and reduce the possibility of damage to the display stand.

[0011] In some embodiments, the hardness of the light-transmitting element is greater than that of the display platform. The light-transmitting element with greater hardness can also support the display platform, preventing deformation of the display platform and thus ensuring the assembly accuracy between the light-transmitting element and the display platform.

[0012] In some embodiments, the display platform is made of plastic, and the light-transmitting element is made of light-transmitting glass or light-transmitting plastic. If the display platform is made of plastic, it has a certain degree of elasticity, providing cushioning in the event of a drop (other than the electric toothbrush) and collision with the ground, thereby reducing the likelihood of damage to the light-transmitting element and extending its lifespan. Light-transmitting glass has high light transmittance, and using it as the light-transmitting element effectively transmits light, ensuring clear visibility of the displayed information. Light-transmitting plastic is lightweight, and using it as the light-transmitting element reduces the weight of the electric toothbrush.

[0013] In some embodiments, the motor is spaced apart from the display screen, and the minimum distance between the motor and the display screen in the axial direction of the display surface is greater than or equal to 3mm, so that the vibration generated by the motor during operation is less likely to affect the display screen.

[0014] In some embodiments, at least a portion of the display surface protrudes away from the handle cylinder. This protrusion widens the user's viewing angle. The protrusion also has a curvature that helps disperse reflected light from the light-transmitting element, reducing glare at specific angles and making the displayed information easier to read.

[0015] In some embodiments, the vertical distance between the starting point of the connection between the handle and the display platform and the light-transmitting element in the axial direction of the display surface is no more than 5mm, which can prevent the center of gravity of the display platform from shifting and ensure the stability of the electric toothbrush when placed.

[0016] In some embodiments, the drive shaft of the mechanism is used to mount the electric toothbrush head. In the axial direction perpendicular to the display surface, the minimum distance between the display part and the bristles of the electric toothbrush head is greater than 80mm, which can keep the first end of the display part at a certain distance from the bristles and reduce the possibility of foam on the bristles splashing onto the light-transmitting element.

[0017] In some embodiments, the handle has a second end face opposite to the electric toothbrush head, and the minimum distance between the display and the second end face is greater than or equal to 60 mm, which provides the user with sufficient handle grip length and facilitates the use of the electric toothbrush.

[0018] In some embodiments, the inner wall of the display platform is provided with a first mounting groove, and the light-transmitting element is accommodated in the first mounting groove. The first mounting groove has a positioning effect, facilitating the installation of the light-transmitting element.

[0019] In some embodiments, the outer peripheral surface of the display platform is connected to the second surface of the handle tube to form a connection. In the axial direction of the display surface, the distance between the connection and the end face of the free end of the display platform is greater than or equal to the depth of the first mounting groove. This ensures that the display platform has sufficient thickness and thus sufficient strength, so that the display platform will not suffer structural damage when subjected to external forces.

[0020] In some embodiments, the thickness of the light-transmitting element is greater than or equal to 0.3 mm, which ensures that the light-transmitting element has sufficient structural strength and is not easily broken under external forces.

[0021] In some embodiments, the thickness of the light-transmitting element is greater than or equal to 0.4 mm and less than or equal to 3.5 mm, which ensures that the light-transmitting element has sufficient strength and is not easily broken, and is also at a suitable distance from the display surface, so that the user can easily see the content displayed on the screen.

[0022] In some embodiments, the display surface protrudes away from the handle cylinder to form a curved surface, that is, at least a portion of the display surface is an arched structure. The arched structure has good pressure resistance, thus reducing the risk of breakage of the light-transmitting component due to a drop.

[0023] In some embodiments, the display surface includes a first portion near the center of the light-transmitting element and a second portion surrounding the first portion. The first portion is a plane and the second portion is a curved surface. The first portion being a plane can reduce losses due to light refraction, and the second portion being a curved surface helps guide fluid to flow out along the display portion toward the side away from the light-transmitting element, preventing fluid from accumulating in the light-transmitting element.

[0024] In some embodiments, the handle barrel has a first end face opposite to the second end face, and the display surface is inclined relative to the axis perpendicular to the display surface. In the direction from the second end face to the first end face, the distance between the display surface and the axis of the handle barrel gradually increases. When the user is using an electric toothbrush, the light-transmitting element can better adapt to the user's line of sight while brushing, ensuring that the light from the display screen can pass through the light-transmitting element more effectively and be guided towards the user's line of sight, thereby facilitating the user's observation of the information displayed on the screen.

[0025] In some embodiments, the handle barrel has a first end face opposite to the second end face, and the display surface is inclined relative to the axis direction perpendicular to the display surface. In the direction from the second end face to the first end face, the distance between the display surface and the axis of the handle barrel gradually decreases, making it difficult for fluid flowing down the electric toothbrush head to splash onto the display surface, which helps to keep the light-transmitting component clean.

[0026] In some embodiments, the display platform includes a connecting end and a free end. The connecting end is connected to the handle cylinder, and the free end protrudes in a direction away from the handle cylinder, thereby providing space for the installation of the light-transmitting element. The free end is provided with an installation port, and the light-transmitting element is installed in the installation port. The free end can absorb part of the impact force, protect the light-transmitting element, and prevent the light-transmitting element from breaking due to external impact force.

[0027] In some embodiments, the light-transmitting element is connected to the free end and exposed to the outside of the display platform, making the light-transmitting element easier to install and remove.

[0028] In some embodiments, the display screen is located inside the handle sleeve. The display screen and the light-transmitting element are disposed opposite to each other and form a light-emitting channel. The light-emitting channel includes a first segment and a second segment. The first segment and the second segment are disposed along the direction from the display screen to the light-transmitting element. In the direction from the display screen to the light-transmitting element, the light-passing area of ​​the first segment remains unchanged, while the light-passing area of ​​the second segment gradually increases, which can expand the light emission angle and enable the light to be evenly distributed on the surface of the light-transmitting element. This avoids excessively strong or dark local brightness on the surface of the light-transmitting element and improves the display effect of the display screen.

[0029] In some embodiments, the light-transmitting element has a first projection and the handle has a second projection in a plane passing through the axis of the handle and perpendicular to the axis of the display surface. In a first direction along the axis of the display surface, the ratio of the area of ​​the first projection to the area of ​​the second projection is greater than or equal to 0.6 and less than or equal to 1.5. The projection surface is parallel to the axis perpendicular to the display surface and perpendicular to the central axis of the display platform. This ensures that the light emitted from the display screen has sufficient transmission area, the displayed content is not obstructed, and it is convenient for users to observe the displayed information in the light-transmitting display area. At the same time, it avoids the light-transmitting element being too large, reducing the risk of damage due to drops.

[0030] In some embodiments, the brush handle further includes a light-shielding element made of soft rubber or foam, disposed between the display screen and the handle barrel. Soft rubber and foam can reduce wear caused by contact between the display screen and the handle barrel, and / or between the display screen and the movement, helping to extend the service life of the display screen, as well as the handle barrel and / or the movement.

[0031] In some embodiments, the light-shielding element is disposed between the display screen and the mechanism, and the light-shielding element is at least used to block the light emitted by the display screen from being transmitted to the mechanism, thereby ensuring the brightness and clarity of the display screen and helping the user to observe the displayed information.

[0032] In some embodiments, the display unit further includes a frame disposed within the handle sleeve. The frame is connected to the handle sleeve and / or the mechanism. The frame includes a first side and a second side facing away from each other. The first side of the frame facing the light-transmitting element faces the light-transmitting element and has a supporting surface for supporting the light-transmitting element. The second side of the frame faces the mechanism and is connected to the display screen. The display unit also includes a connecting unit, one end of which is connected to the mechanism, and the other end of which is connected to the frame. The connection between the frame and the handle sleeve and / or the mechanism also provides some support and protection for the handle sleeve. The supporting surface can disperse forces, reduce the impact of external impacts on the display unit, and extend its service life.

[0033] In some embodiments, a second buffer is provided between the display screen and the frame, the second buffer being used to buffer the force between the display screen and the frame. The second buffer, located between the display screen and the frame, can absorb and reduce the force that may be generated between the display screen and the frame due to impact and vibration, thereby reducing damage to the display screen and the frame from such forces.

[0034] In some embodiments, the display stand has a mounting cavity, in which the display screen is housed. The mounting cavity provides space for the display screen, reducing interference from the external environment.

[0035] In some embodiments, the display stand and the handle tube are integrally formed, which can prevent the display stand and the handle tube from separating during the operation of the electric toothbrush, thereby ensuring the stability and reliability of the electric toothbrush operation.

[0036] In some embodiments, the display platform and the handle sleeve are formed separately, and the display platform and the handle sleeve and / or the mechanism are connected by at least one of the following methods: screw connection, threaded connection, bonding, and welding. Separate forming facilitates disassembly and replacement of the display platform and handle sleeve.

[0037] In some embodiments, the display platform includes an extension with a free end, and the light-transmitting element is mounted on the free end. In the axial direction of the display surface, the cross-sectional area of ​​the outer peripheral surface of the extension gradually increases, which can expand the emission angle of light and enable the light to be evenly distributed on the surface of the light-transmitting element, thereby avoiding excessively strong or dark local brightness on the surface of the light-transmitting element and improving the display effect of the display screen.

[0038] In some embodiments, the angle between the outer peripheral surface of the extension and the second surface of the handle cylinder is greater than or equal to 30° and less than or equal to 90°, which allows fluid to flow more easily along the guide groove and prevents fluid from flowing from the second surface of the handle cylinder to the outer peripheral surface of the extension and accumulating on the surface of the light-transmitting element. This reduces the possibility of fluid accumulation on the display surface, helps maintain the clarity of the light-transmitting element, and ensures that the user can clearly see the content of the display screen through the light-transmitting element.

[0039] In some embodiments, the handle cylinder has a second projection on the first plane, and the extension has a third projection. The distance between the area of ​​the second projection and the area of ​​the third projection is greater than 2 mm, which can increase the distance of the fluid from the handle cylinder to the light-transmitting element, making it less likely for the fluid to flow to the display surface.

[0040] In some embodiments, the connection between the extension and the handle cylinder is chamfered. This increases the distance the fluid travels from the handle cylinder to the light-transmitting element, making it less likely for the fluid to flow towards the display surface.

[0041] In some embodiments, the display stand and the handle tube are separately formed, and a first seal is provided between the display stand and the handle tube. The first seal can seal the gap between the outer peripheral surface of the display stand and the handle tube, preventing fluid from flowing into the handle tube from the gap and improving the water resistance of the electric toothbrush. Furthermore, the first seal is low in cost and does not occupy additional installation space.

[0042] In some embodiments, the height of the display platform protruding relative to the handle tube in the axial direction of the display surface is greater than or equal to 2.5 mm and less than or equal to 10 mm. This provides sufficient installation space for the display screen and allows for a compact brush handle structure. In the event of a fall of the electric toothbrush, the display platform is less likely to hit the ground first, reducing the risk of damage to the electric toothbrush due to accidental drops or impacts.

[0043] In some embodiments, the handle sleeve is provided with a display window that extends through the display unit and the handle sleeve. A light-transmitting element is disposed in the display window, with its inner surface near the display screen spaced apart from the mechanism. The display screen is connected to the inner surface of the light-transmitting element and electrically connected to the mechanism. The mechanism includes a main control board and a wiring portion. The wiring portion is disposed on the main control board and exposed through the display window. The display screen includes a connecting portion that is electrically connected to the wiring portion via a connecting wire. Connecting the display screen to the inner surface of the light-transmitting element shortens the distance between them, ensuring clear display of content and facilitating user observation of the displayed content.

[0044] In some embodiments, a portion of the connecting cable is sandwiched between the display screen and the inner wall of the display platform.

[0045] In some embodiments, a third buffer is provided between the display platform and the display screen. A portion of the connecting cable is sandwiched between the buffer and the inner wall of the display platform, which helps to secure the connecting cable, prevent it from coming loose, and also makes the interior of the display platform neater.

[0046] In some embodiments, the display unit further includes a reinforcing portion disposed on the display platform, the reinforcing portion being at least partially abutting the inner wall of the display platform, and the reinforcing portion being connected to the display platform and / or the handle sleeve. The connection of the reinforcing portion to the display platform prevents deformation of the display platform due to external pressure or impact, thereby ensuring the installation stability between the display screen and the light-transmitting element and maintaining the correct alignment of the display screen.

[0047] In some embodiments, the reinforcing part is provided with a first mating part, and the display platform is provided with a second mating part. The first mating part and the second mating part cooperate to position the reinforcing part and the display platform. The cooperation of the first mating part and the second mating part enables the reinforcing part and the display platform to be accurately positioned and connected, thereby improving the accuracy and efficiency of electric toothbrush assembly.

[0048] In some embodiments, the reinforcing part is a reinforcing rib integrally formed with the display platform. The reinforcing rib can disperse external forces and reduce the deformation and displacement of the display platform when subjected to external forces. This prevents the display platform from cracking after long-term use, thereby enhancing the structural strength of the display platform.

[0049] In some embodiments, the reinforcing member is connected to the movement via fasteners. The fasteners connect the reinforcing member to the movement, preventing it from loosening or detaching.

[0050] In some embodiments, the distance between the peripheral side surface of the display screen and the inner peripheral surface of the reinforcement is greater than 1 mm.

[0051] In some embodiments, the display platform and the reinforcing part together form a first mounting groove, and the light-transmitting element is housed in the first mounting groove, with its peripheral side abutting against the inner wall of the first mounting groove. The contact between the peripheral side of the light-transmitting element and the inner wall of the first mounting groove prevents the light-transmitting element from easily shifting, avoiding displacement or loosening, and further ensuring that light can effectively pass through the light-transmitting element, thus improving the light transmission performance of the display platform. The first mounting groove also has a positioning effect, facilitating the installation of the light-transmitting element.

[0052] In some embodiments, the reinforcing part is provided with a second mounting groove, which communicates with the first mounting groove, and the display screen is housed in the second mounting groove. The display screen being housed in the second mounting groove prevents the light-transmitting element from easily shifting, further ensuring that the light emitted from the display screen can reach the light-transmitting element, thus improving the light transmission performance of the display stand. The second mounting groove also has a positioning effect, facilitating the installation of the display screen.

[0053] In some embodiments, the free end of the display platform is provided with a first mounting portion, the first mounting portion having a first mounting groove, the light-transmitting element being accommodated in the first mounting groove, and the peripheral side surface of the light-transmitting element abutting against the inner wall of the first mounting groove. The first mounting portion is capable of mounting and fixing the light-transmitting element, wherein the inner wall of the first mounting groove can provide support for the light-transmitting element, making it difficult for the light-transmitting element to shift.

[0054] In some embodiments, the free end of the display platform is further provided with a second mounting portion, the second mounting portion having a second mounting groove communicating with the first mounting groove. The display screen is accommodated in the second mounting groove, the display screen including a first side and a second side facing away from each other, and a peripheral side connecting the first side and the second side. The inner wall of the second mounting groove includes a side surface and a bottom surface that are in contact, and the peripheral side of the display screen is spaced apart from the side surface of the second mounting groove. The second mounting portion can install and fix the display screen, wherein the inner wall of the second mounting groove can provide support for the display screen, making the display screen less prone to displacement.

[0055] In some embodiments, the brush handle further includes a second seal and a fourth cushioning element. The second seal is disposed between the first mounting groove and the light-transmitting element. The second seal seals the gap between the side of the first mounting groove and the peripheral side of the light-transmitting element, improving the water resistance of the electric toothbrush. Furthermore, the second seal is low-cost and does not occupy additional mounting space.

[0056] In some embodiments, the fourth buffer is disposed between the display screen and the second mounting slot, which can buffer the electric toothbrush when it is subjected to external force, disperse and absorb the force, and reduce the direct damage of the force to the display screen and the second mounting slot.

[0057] This application also provides an electric toothbrush, which includes a handle and an electric toothbrush head as described in any of the above embodiments. The electric toothbrush head is mounted on the handle. In the case of fluid flowing onto the handle, the guide channel of the electric toothbrush of this application can guide the fluid along the display platform towards the side away from the light-transmitting element, preventing fluid flowing from the mouth during brushing from flowing towards the light-transmitting element, thereby reducing the possibility of fluid accumulation on the display area and allowing the user to clearly observe the content of the display screen through the light-transmitting element. Furthermore, the fluid flowing out along the display platform towards the side away from the light-transmitting element also reduces the risk of fluid flowing into the handle barrel. This protects the electronic components (such as the display screen, mechanism, etc.) inside the handle barrel from moisture or liquid damage, thereby improving the durability and reliability of the handle.

[0058] Additional aspects and advantages of embodiments of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of embodiments of this application. Attached Figure Description

[0059] 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:

[0060] Figure 1 This is a perspective view of an electric toothbrush according to some embodiments of this application;

[0061] Figure 2 yes Figure 1 A cross-sectional schematic diagram of an electric toothbrush is shown.

[0062] Figure 3 yes Figure 2 The enlarged schematic diagram shown at point III;

[0063] Figure 4 This is a three-dimensional assembly diagram of an electric toothbrush according to other embodiments of this application;

[0064] Figure 5 yes Figure 4 The diagram shown is a three-dimensional exploded view of an electric toothbrush.

[0065] Figure 6 yes Figure 4 A cross-sectional schematic diagram of an electric toothbrush is shown.

[0066] Figure 7 yes Figure 6 The enlarged schematic diagram shown at point VII;

[0067] Figure 8 This is a three-dimensional assembly diagram of an electric toothbrush according to some embodiments of the present application;

[0068] Figure 9 yes Figure 8 The diagram shown is a three-dimensional exploded view of an electric toothbrush.

[0069] Figure 10 yes Figure 8 A cross-sectional schematic diagram of an electric toothbrush is shown.

[0070] Figure 11 yes Figure 10 The enlarged schematic diagram shown at point XI.

[0071] Explanation of key component symbols:

[0072] Electric toothbrush 100, handle 10, handle tube 11, second end face 101, first end face 102, second surface 111, display part 113, display platform 1131, outer peripheral surface 1134, connecting end 11311, free end 11312, mounting cavity 11313, extension part 11315, first mounting part 11317, second mounting part 11318, frame 1132, first side 11321, second side 11322, connecting unit 1133, reinforcing part 1134, first mating part 11341, first mounting groove 1135, second mounting groove 1136, guide groove 115, light emission channel 117, first section 1171, second... Section 1172, display window 119, mechanism 13, motor 131, drive shaft 133, main control board 135, wiring part 137, light-transmitting part 15, display surface 151, first part 1511, second part 1513, inner surface 152, loading slot 153, display screen 17, connecting part 171, first surface 173, second surface 175, electric toothbrush head 30, bristles 31, rod body 33, first buffer 51, second buffer 52, third buffer 53, fourth buffer 54, light shield 60, first seal 71, second seal 72, light shield layer 80, inner ring 81, outer ring 83, control key 90, first direction A, axial direction X. Detailed Implementation

[0073] 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.

[0074] In the description of this application, it should be understood that the terms "thickness," "upper," "top," "bottom," "inner," "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0075] Please see Figure 1 and Figure 2 ,or Figure 4 and Figure 5 ,or Figure 8 and Figure 9 This application provides an electric toothbrush 100, which includes a handle 10 and an electric toothbrush head 30, the electric toothbrush head 30 being mounted on the handle 10.

[0076] An electric toothbrush 100 is a device for cleaning the oral cavity. The electric toothbrush 100 of this embodiment includes an electric toothbrush head 30 and a handle 10, with the electric toothbrush head 30 mounted on the handle 10. Since the electric toothbrush 100 in this embodiment includes a handle 10, it is understood that the electric toothbrush 100 includes at least the same beneficial effects as the handle 10. Therefore, the beneficial effects of the electric toothbrush 100 are described below in relation to the beneficial effects of the handle 10. The handle 10 of the electric toothbrush 100 can drive the electric toothbrush head 30 to vibrate at a high frequency to clean the teeth.

[0077] The electric toothbrush 100 includes, but is not limited to, sonic toothbrushes, ultrasonic toothbrushes, plug-in electric toothbrushes, and battery-powered electric toothbrushes. 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 can be, but is not limited to, nylon, rubber, or boar bristles. Preferably, the bristles 31 have good toughness and elasticity, thus enabling better cleaning of teeth and interdental spaces. The handle 10 includes a motor 13, which houses a motor 131. One end of the handle 33 is detachably connected to the drive shaft 133 of the motor 131, and the other end is provided with bristles 31. The handle 33 is generally elongated, allowing it to easily extend into the oral cavity so that the bristles 31 can reach all areas of the mouth that need cleaning, thereby ensuring the cleaning effect of the electric toothbrush 100. When the motor 131 of the electric toothbrush 100 is running stably, the handle 33 can transmit the vibration of the motor 131 to the bristles 31, and the bristles 31 can clean the areas in the mouth that need to be cleaned during the vibration. The areas in the mouth that need to be cleaned may include the tooth surfaces, gaps between teeth, and gums.

[0078] Please see Figures 1 to 3 ,or Figures 4 to 6 ,or Figures 8 to 10 In some embodiments, the brush handle 10 includes a handle cylinder 11 and a display section 113 and a mechanism 13 disposed on the handle cylinder 11. The display section 113 includes a display platform 1131, a light-transmitting element 15, and a display screen 17.

[0079] The display platform 1131 protrudes away from the handle cylinder 15; the display platform 1131 also includes an outer peripheral surface 1134 and a display surface 151, the outer peripheral surface 1134 is opposite to the handle cylinder 15 and together forms a guide groove 15; a light-transmitting element is disposed on the display platform 1131, and the guide groove 15 is used to guide the fluid along the display platform 1131 to the side away from the light-transmitting element 15. The mechanism 13 is disposed inside the handle cylinder 15; the display surface 151 is the outer surface of the light-transmitting element 15, the orthographic projection of the display surface 151 is a first plane, and the outer peripheral surface 1134 is the surface connecting the display surface and the handle cylinder 15.

[0080] The handle cylinder 11 contains a mechanism 13, and the drive shaft 133 of the mechanism 13 extends from the second end face 101 of the handle cylinder 11. The display platform 1131 protrudes in a direction away from the handle cylinder 11 to form a protruding portion, which is opposite to the handle cylinder 11 and together forms a guide groove 115; a light-transmitting element 15 is disposed on the display platform 1131, and the guide groove 115 is used to guide the fluid along the side of the display platform 1131 away from the light-transmitting element 15; a display screen 17 is disposed on the display section 113 and / or the mechanism 13, and light can pass through the light-transmitting element 15 to the outside of the handle cylinder 11.

[0081] The 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 handle 10 is typically cylindrical to provide a comfortable grip. The handle 10 may include a non-slip structure to prevent the electric toothbrush 100 from slipping from the hand during use.

[0082] The handle 11 houses the other components of the electric toothbrush 100. It protects these components and provides a degree of water resistance, preventing external fluids from entering. Other components include, but are not limited to, the motor 13 and the light-transmitting element 15. The cross-sectional shape of the handle 11 can be, but is not limited to, circular, elliptical, rectangular, or other polygonal shapes. The handle 11 can be made of plastic or metal. When the handle 11 is made of plastic, it offers good insulation, lower cost, and lighter weight. When the handle 11 is made of metal, it offers higher strength, better wear resistance, and a longer service life.

[0083] The display stand 1131 is mounted on the handle tube 11 via the display portion 113. In some embodiments, the handle tube 11 and the display stand 1131 are an integral structure, that is, the handle tube 11 and the display stand 1131 are a single unit, which improves the bonding strength between the handle tube 11 and the display stand 1131, preventing separation of the handle tube 11 and the display stand 1131 during brush handle 10 operation, thereby ensuring the stability and reliability of brush handle 10 operation. In other embodiments, the handle tube 11 and the display stand 1131 are separate structures, that is, the handle tube 11 and the display stand 1131 are two different structures. In one example, the handle tube 11 and the display stand 1131 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 tube 11 and the display stand 1131 can be joined together by a non-detachable connection method, including but not limited to bonding or welding.

[0084] The display unit 113 includes a display platform 1131. The display platform 1131 protrudes away from the handle cylinder 11 to form a protruding portion, which creates a receiving space so that the brush handle 10 can accommodate more components. It is understood that the protruding direction of the protruding portion is not consistent with the axial direction X of the handle cylinder 11, that is, the protruding direction of the protruding portion of the display platform 1131 is any direction other than the axial direction X of the handle cylinder 11. Thus, the protruding portion is opposite to the handle cylinder 11, that is, the protruding portion is spaced apart from the handle cylinder 11 and forms a certain tilt angle with the handle cylinder 11, and together with the handle cylinder 11, they form a guide groove 115.

[0085] The flow channel 115 is used to guide the flow of fluid. During brushing, fluid (such as toothpaste foam and water) from the electric toothbrush head 30 flows 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 115, the part of the display stand 1131 near the electric toothbrush head 30 has a certain angle of inclination with the handle 11, forming an obstruction in the fluid flow path. That is, the part of the display stand 1131 near the electric toothbrush head 30 forms a certain resistance during fluid flow, while the lateral resistance of the display stand 1131 (i.e., the two sides of the part of the display stand 1131 near the electric toothbrush head 30) is smaller. Therefore, the fluid tends to flow laterally to the display stand 1131, thereby reducing the possibility of fluid accumulation on the surface of the light-transmitting element 15, helping to maintain the clarity of the light-transmitting element 15, and ensuring that the user can clearly see the content of the display screen 17 through the light-transmitting element 15.

[0086] The mechanism 13 is a structure for driving the electric toothbrush head 30 to vibrate. The drive shaft 133 of the mechanism 13 extends from the second end face 101 of the handle barrel 11. The handle barrel 11 includes a second end face 101 and a first end face 102 in the axial direction (i.e., the length direction). The second end face 101 is closer to the end of the electric toothbrush 100 where the electric toothbrush head 30 is located than the first end face 102. The drive shaft 133 of the mechanism 13 extends from the second end face 101 of the handle barrel 11 and connects to the electric toothbrush 100. The first end face 102 of the handle barrel 11 has approximately the same cross-sectional area as the handle barrel 11, thereby improving the continuity of the outer surface of the handle barrel 11. Furthermore, the second end face 101 of the handle barrel 11 has a smaller cross-sectional area, allowing at least a portion of the handle barrel 11 to extend into the oral cavity, thus facilitating the electric toothbrush 100 to penetrate deeper into the oral cavity to clean teeth, increasing the cleaning range of the electric toothbrush 100, and improving the cleaning effect of the electric toothbrush 100. After the user turns on the electric toothbrush 100, the drive 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 bristles 31 of the vibrating brush head 31 can clean the teeth. 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.

[0087] 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 barrel 11, preventing dust, fluid, or other dirt from entering the interior of the handle barrel 11 and protecting the display screen 17 from contamination. The light-transmitting element 15 can also have certain optical properties, allowing light to pass through the light-transmitting element 15 and be emitted to the outside of the handle barrel 11 when the display screen 17 is working, and to 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.

[0088] The display screen 17 emits light, which passes through the light-transmitting element 15 and is projected onto the outside of the handle barrel 11, thereby providing the user with the necessary display information. The light-emitting element can combine different colors and brightness levels to form the displayed information. It is understood that the light-emitting element can be connected to the display screen 17 to be mounted as a single unit on the electric toothbrush 100, or it can be independent of the display screen 17, with only the light emitted by the light-emitting element passing through the display screen 17 and the light-transmitting element 15 to the outside. The display information carried in the light includes, but is not limited to, brushing time elapsed, remaining brushing time, the amount of plaque detected, and remaining battery power. This display information helps users monitor their brushing progress in real time, thereby promoting oral health management.

[0089] When fluid flows onto the brush handle 10, the guide groove 115 of this application can guide the fluid along the display platform 1131 to the side away from the light-transmitting element 15, preventing fluid flowing from the mouth during brushing from flowing towards the light-transmitting element 15, thereby reducing the possibility of fluid accumulating on the surface of the light-transmitting element 15, allowing the user to clearly observe the content of the display screen 17 through the light-transmitting element 15. In addition, the fluid flowing out along the display platform 1131 to the side away from the light-transmitting element 15 also reduces the risk of fluid flowing into the handle cylinder 11. It can protect the electronic components (such as the display screen 17, the mechanism 13, etc.) inside the handle cylinder 11 from moisture or liquid damage, thereby improving the durability and reliability of the brush handle 10.

[0090] Please see Figure 2 and Figure 3 ,or Figure 5 and Figure 6 ,or Figure 9 and Figure 10In some embodiments, the outer peripheral surface 1134 is inclined relative to the axial direction A of the display surface 151, and the outer peripheral surface 1134 is connected to the handle cylinder 11 and forms the guide groove 15.

[0091] The outer peripheral surface 1134 and the second surface 111 intersect at the connection point of the connecting end 11311 and the handle cylinder 11, and have a certain angle. Thus, the outer peripheral surface 1134 and the second surface 111 are spaced apart and opposite each other in the axial direction A of the display surface 151 (the axial direction A of the display surface 151 can be basically perpendicular to the axial direction X of the handle cylinder 11). The second surface 111 and the outer peripheral surface 1134 have a certain space in the axial direction A of the display surface 151. Part of the outer peripheral surface 1134 is one side wall of the guide groove 115, and the second surface 111 is the other side wall of the guide groove 115. The outer peripheral surface 1134 and the second surface 111 are connected at the connection point of the handle cylinder 11 and the display platform 1131, thereby forming the guide groove 115.

[0092] The flow channel 115 guides the fluid along the display platform 1131 to the side away from the light-transmitting element 15, preventing fluid flowing from the mouth during brushing from flowing towards the light-transmitting element 15, thereby reducing the possibility of fluid accumulation on the surface of the light-transmitting element 15 and allowing the user to clearly observe the content of the display screen 17 through the light-transmitting element 15. In addition, the outer peripheral surface 1134 and the second surface 111 are spaced apart and opposite each other in the axial direction A of the display surface 151, that is, the display platform 1131 is disposed on the head of the electric toothbrush 100, which makes it convenient for the user to observe the content of the display screen 17 through the light-transmitting element 15.

[0093] Please see Figure 2 and Figure 3 ,or Figure 5 and Figure 6 ,or Figure 9 and Figure 10 In some embodiments, the display platform 1131 includes a connecting end 11311 connected to the handle cylinder 11 and a free end 11312 opposite to the connecting end 11311. The outer peripheral surface 1134 of the display platform 1131 is a surface connecting the connecting end 11311 and the free end 11312. The second surface 111 of the handle cylinder 11 is the surface between the first end face and the connecting end 11311.

[0094] The display stand 1131 includes a connecting end 11311 and a free end 11312. The connecting end 11311 is the end connected to the handle sleeve 11, and the free end 11312 is the end not connected to the handle sleeve 11. The free end 11312 is further away from the handle sleeve 11 than the connecting end 11311. The outer peripheral surface 1134 of the display stand 1131 is the surface between the connecting end 11311 and the free end 11312, and the second surface 111 of the handle sleeve 11 is the surface between the first end surface and the connecting end 11311. The free end 11312 can be used to mount the light-transmitting element 15 and the display screen 17, and light can be emitted from the free end 11312.

[0095] Please see Figure 2 and Figure 3 ,or Figure 5 and Figure 6 ,or Figure 9 and Figure 10 In some embodiments, the outer peripheral surface 1134 of the display platform 1131 is inclined relative to the axial direction A of the display surface 151, and the slope is greater than or equal to 0.5. It should be noted that in some embodiments, the slope can be any one of the values ​​greater than or equal to 0.5, such as 0.5, 0.55, 0.61, 0.67, 0.71, 0.75, 0.84, 0.85, 0.91, and 0.98, or any value between any two values ​​greater than or equal to 0.5.

[0096] If the slope is less than 0.5, after the fluid flows to the guide channel 115, the tilt angle between the part of the display platform 1131 near the electric toothbrush head 30 and the handle cylinder 11 is small. That is, the resistance to the fluid flow is small, and the fluid easily flows from the second surface 111 of the handle cylinder 11 to the outer peripheral surface 1134 of the display platform 1131 and then to the display surface 151. However, in some embodiments of this application, the slope is greater than or equal to 0.5. After the fluid flows to the guide channel 115, the tilt angle between the part of the display platform 1131 near the electric toothbrush head 30 and the handle cylinder 11 is large. That is, the resistance to the fluid flow is large, and the fluid does not easily flow to the display surface 151, thus ensuring the light transmission effect of the light-transmitting element 15.

[0097] Please see Figure 2 and Figure 3 , Figure 5 and Figure 6 ,or Figure 9 and Figure 10In some embodiments, the minimum height of the protrusion of the display platform 1131 relative to the handle cylinder 11 in the axial direction A of the display surface 151 is not less than 0.5 mm. At least a portion of the protrusion of the display platform 1131 relative to the handle cylinder 11 is opposite to the handle cylinder 11 in the axial direction A of the display surface 151 and together forms a guide groove 115.

[0098] Specifically, the height of the protrusion of the display platform 1131 relative to the handle cylinder 11 can be 0.5mm, 1.55mm, 1.61mm, 2.67mm, 2.71mm, 3.75mm, 3.84mm, 3.85mm, 4.91mm, or 4.98mm. It is understood that the depth of the flow guide groove 115 is related to the height of the protrusion of the display platform 1131 relative to the handle cylinder 11. Therefore, if the height of the protrusion of the display platform 1131 relative to the handle cylinder 11 is less than 0.5mm, the height difference between the display platform 1131 and the handle cylinder 11 is small, and fluid easily flows from the handle cylinder 11 to the display platform 1131. If the minimum height of the protrusion of the display platform 1131 relative to the handle cylinder 11 is not less than 0.5mm, then the depth of the flow guide groove 115 has a suitable depth, and fluid does not easily flow from the handle cylinder 11 to the display platform 1131.

[0099] Please see Figure 2 and Figure 3 , Figure 5 and Figure 6 ,or Figure 9 and Figure 10 In some embodiments, the minimum thickness of the display stand 1131 is greater than or equal to 1 mm.

[0100] Specifically, the thickness of the display stand 1131 can be any value greater than or equal to 1 mm, such as 1 mm, 1.25 mm, 1.31 mm, 1.67 mm, 2.11 mm, 2.45 mm, 3.14 mm, 3.35 mm, 3.91 mm, or 4.98 mm, or any value between any two values ​​greater than or equal to 1 mm. Since the display stand 1131 protrudes relative to the handle cylinder 11, it easily contacts the ground when the electric toothbrush 100 is dropped. If the thickness of the display stand 1131 is less than 1 mm, its structural strength is low, and it is prone to structural damage under external forces. In some embodiments of this application, the thickness of the display stand 1131 is greater than 1 mm, ensuring that it has sufficient structural strength and is less likely to suffer structural damage under external forces.

[0101] Please see Figure 2 and Figure 3 , Figure 5 or Figure 9In some embodiments, the outer peripheral surface 1134 of the display platform 1131 is provided with a first buffer 51.

[0102] Specifically, the first buffer 51 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 first buffer 51 can return to its original shape after being subjected to force, effectively absorbing and dispersing the force. The first buffer 51 is disposed on the outer peripheral surface 1134 of the display platform 1131. It not only buffers the display platform 1131 when subjected to external forces, dispersing and absorbing the force and reducing the possibility of damage to the display platform 1131, but also reduces the force transmitted to the handle cylinder 11, protecting the handle cylinder 11 from structural damage.

[0103] Please see Figures 1 to 3 , Figure 5 and Figure 6 ,or Figure 9 and Figure 10 In some embodiments, the hardness of the light-transmitting element 15 is greater than the hardness of the display stand 1131.

[0104] Specifically, when the electric toothbrush 100 is dropped or impacted, the light-transmitting component 15, with its high hardness, possesses sufficient strength. Under external forces, the light-transmitting component 15 can effectively resist these forces, preventing structural damage and extending its service life. The high hardness of the light-transmitting component 15 also serves to support the display platform 1131, preventing deformation and ensuring the assembly accuracy between the light-transmitting component 15 and the display platform 1131.

[0105] Please see Figure 5 and Figure 6 ,or Figure 9 and Figure 10 In some embodiments, the display stand 1131 is made of plastic, and the light-transmitting component 15 is made of light-transmitting glass or light-transmitting plastic.

[0106] Specifically, the display stand 1131 is made of plastic, which provides it with a certain degree of elasticity. In the event of a fall from the electric toothbrush 100 and a collision with the ground, the display stand 1131 can act as a buffer, reducing the likelihood of damage to the light-transmitting component 15 and extending its lifespan. Furthermore, the light-transmitting glass has a high light transmittance, ensuring that the light-transmitting component 15 effectively transmits light and guarantees clear visibility of the displayed information. The lightweight nature of the light-transmitting plastic component 15 also reduces the weight of the electric toothbrush 100.

[0107] Please see Figure 6 and Figure 7 ,or Figure 10 and Figure 11 In some embodiments, the mechanism 13 further includes a motor 131, which is spaced apart from the display screen 17. In the axial direction A of the display surface 151, the minimum distance between the motor 131 and the display screen 17 is greater than or equal to 3 mm.

[0108] Specifically, the minimum distance between the motor 131 and the display screen 17 can be any value greater than or equal to 3mm, such as 3mm, 3.5mm, 4.1mm, 5.7mm, 6.11mm, 6.45mm, 6.74mm, 6.95mm, 7.11mm, or 7.98mm, or any value between any two values ​​greater than or equal to 3mm. If the minimum distance between the motor 131 and the display screen 17 is less than 3mm, the distance between them is too small, and the vibration generated by the motor 131 during operation can easily affect the display screen 17, causing it to become loose or shift. Furthermore, the vibration can also cause the content displayed on the display screen 17 to flicker, making it difficult for the user to observe the displayed content.

[0109] In some embodiments of this application, the minimum distance between the motor 131 and the display screen 17 is greater than or equal to 3mm. This ensures that the distance between the motor 131 and the display screen 17 is sufficient, and the vibration generated by the motor 131 during operation is unlikely to affect the display screen 17. This ensures that the display screen 17 is installed securely and that the content displayed on the display screen 17 is stable.

[0110] Please see Figures 5 to 7 ,or Figures 9 to 11 In some embodiments, the display stand 1131 includes a connecting end 11311 and a free end 11312. The connecting end 11311 is connected to the handle sleeve 11, and the free end 11312 protrudes in a direction away from the handle sleeve 11. The free end 11312 is provided with a mounting port, and the light-transmitting element 15 is mounted in the mounting port.

[0111] Specifically, the display stand 1131 includes a connecting end 11311 and a free end 11312. The connecting end 11311 is used to connect the display stand 1131 to the handle tube 11. The connection method can be a detachable connection or a non-detachable connection. The connecting end 11311 ensures that the display stand 1131 is fixed to the handle tube 11, preventing the display stand 1131 from loosening due to vibration during the use of the electric toothbrush 100.

[0112] The free end 11312 protrudes away from the handle tube 11 and has a mounting opening, and the light-transmitting element 15 is installed in the mounting opening, so that the light-transmitting element 15 can be fixed on the display stand 1131. When the electric toothbrush 100 is dropped or collided, the free end 11312 can absorb part of the impact force, protect the light-transmitting element 15, and prevent the light-transmitting element 15 from breaking due to external impact force.

[0113] Please see Figure 2 and Figure 3 ,or Figure 5 and Figure 6 ,or Figure 9 and Figure 10 In some embodiments, the distance between the starting point of the connection between the handle cylinder 11 and the display platform 1131 and the light-transmitting element 15 in the axial direction A of the display surface 151 is no more than 5 mm.

[0114] Specifically, the distance between the connection point of the handle barrel 11 and the display platform 1131 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 distance between the connection point of the handle barrel 11 and the display platform 1131 and the light-transmitting element 15 is greater than 5mm, the distance between the light-transmitting element 15 and the handle barrel 11 will be too large, causing a significant shift in the center of gravity of the electric toothbrush 100, resulting in instability when the electric toothbrush 100 is placed. In some embodiments of this application, the distance of the light-transmitting element 15 beyond the connection point of the handle barrel 11 and the display platform 1131 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.

[0115] Please see Figure 1 and Figure 2 ,or Figure 5 and Figure 6 ,or Figure 9 and Figure 10 In some embodiments, the drive shaft 133 of the mechanism 13 is used to mount the electric toothbrush head 30, and in the axial direction X of the handle barrel 11, the display part 113 is further away from the electric toothbrush head 30 than the second end face 101 of the handle barrel 11.

[0116] Specifically, during the operation of the motor 131, the motor 131 can drive the electric toothbrush head 30 to vibrate at a high frequency. Therefore, the foam on the electric toothbrush head 30 may splash due to the vibration. At this time, if the display section 113 is closer to the electric toothbrush head 30 than the second end face 101 of the handle barrel 11, the foam will more easily splash onto the display section 113, thereby blocking the light-transmitting element 15 and affecting the user's observation of the display content of the display screen 17 through the light-transmitting element 15. In this embodiment, the display section 113 is further away from the electric toothbrush head 30 than the second end face 101 of the handle barrel 11. That is, in the axial direction X of the handle barrel 11, the display section 113 does not exceed the second end face 101 of the handle barrel 11. This reduces the possibility of foam splashing onto the display section 113, prevents the foam from blocking the light-transmitting element 15, and ensures that the user can observe the display content of the display screen 17 through the light-transmitting element 15. On the other hand, it prevents the display section 113 from interfering with the installation of the electric toothbrush head 30, and ensures the normal assembly of the electric toothbrush head 30 on the handle 10.

[0117] Please see Figure 1 and Figure 2 ,or Figure 5 and Figure 6 ,or Figure 9 and Figure 10 In some embodiments, the drive shaft 133 of the mechanism 13 is used to mount the electric toothbrush head 30, and the minimum distance between the display part 113 and the bristles 31 of the electric toothbrush head 30 in the axial direction X of the handle tube 11 is greater than or equal to 80 mm.

[0118] Specifically, the minimum distance between the display unit 113 and the bristles 31 of the electric toothbrush head 30 can be any value greater than or equal to 80mm, such as 80mm, 90mm, 100mm, 110mm, 120mm, 130mm, 140mm, 150mm, 160mm, or 170mm, or any value between any two values ​​greater than or equal to 80mm. If the minimum distance between the display unit 113 and the bristles 31 of the electric toothbrush head 30 is less than 80mm, the distance between the display unit 113 and the bristles 31 is too short. When the user uses the electric toothbrush 100, the vibration of the motor 131 will drive the brush head 31 to reciprocate at a high frequency, making it easy for foam on the bristles 31 to splash onto the light-transmitting element 15. The minimum distance between the first end of the display section 113 and the bristles 31 of the electric toothbrush head 30 is greater than or equal to 80mm, which allows the display section 113 to maintain a certain distance from the bristles 31, reducing the possibility of foam on the bristles 31 splashing onto the light-transmitting element 15.

[0119] Please see Figure 1 and Figure 2 ,or Figure 5 and Figure 6 ,or Figure 9 and Figure 10 In some embodiments, the minimum distance between the display unit 113 and the first end face 102 is greater than or equal to 60 mm.

[0120] Specifically, the minimum distance between the display unit 113 and the first end face 102 can be any value greater than or equal to 60mm, such as 60mm, 70mm, 80mm, 90mm, 100mm, 110mm, 120mm, 130mm, 140mm, or 150mm, or any value between any two values ​​greater than or equal to 60mm. It is understandable that during the use of the electric toothbrush 100, the user typically holds the portion between the display unit 113 and the first end face 102. If the distance between the first end of the display unit 113 and the bristles 31 of the electric toothbrush head 30 is less than 60mm, the portion of the handle 10 available for the user to hold is too short, which is not conducive to the user's grip. A minimum distance between the display unit 113 and the first end face 102 greater than or equal to 60mm provides the user with sufficient grip length, making it convenient for the user to use the electric toothbrush 100.

[0121] Please see Figure 5 and Figure 6 , Figure 9 and Figure 10 In some embodiments, the inner wall of the display stand 1131 is provided with a first mounting groove 1135, and the light-transmitting element 15 is accommodated in the first mounting groove 1135.

[0122] Specifically, the inner wall of the display stand 1131 is provided with a first mounting groove 1135. Within the projection plane projected onto the axis of the handle sleeve 11 in the X direction, 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 element 15, thereby further enhancing the fixation and support of the light-transmitting element 15 by the first mounting groove 1135. The first mounting groove 1135 provides support for the light-transmitting element 15, ensuring its stable installation and close fit to the inner wall of the display stand 1131, preventing displacement or loosening of the light-transmitting element 15, and further ensuring that light can effectively pass through the light-transmitting element 15, thus improving the light transmission performance of the display stand 1131. The first mounting groove 1135 also has a positioning effect, facilitating the installation of the light-transmitting element 15.

[0123] Please see Figure 5 and Figure 6 In some embodiments, the outer peripheral surface 1134 of the display platform 1131 is connected to the second surface 111 of the handle cylinder 11 to form a connection. In the axial direction A of the display surface 151, the distance between the connection and the end face of the free end 11312 of the display platform 1131 is greater than or equal to the depth of the first mounting groove 1135.

[0124] Specifically, the depth of the first mounting groove 1135 can be 1 / 2, 1 / 3, 1 / 4, 1 / 5, 1 / 6, 1 / 7, 1 / 8, 1 / 9, 1 / 10, or 1 / 11 of the distance between the connection point of the outer peripheral surface 1134 of the display platform 1131 and the second surface 111 of the handle sleeve 11 to the top surface of the display platform 1131. If the depth of the first mounting groove 1135 is greater than or equal to the distance between the connection point and the end face of the free end 11312 of the display platform 1131, the thickness of the display platform 1131 will be reduced, resulting in lower structural strength of the display platform 1131. Under external forces, the display platform 1131 is prone to structural damage. The depth of the first mounting groove 1135 is not greater than the distance between the connection point and the end face of the free end 11312 of the display stand 1131, which ensures that the display stand 1131 has sufficient thickness and thus sufficient strength. Under the condition that the display stand 1131 is subjected to external force, the display stand 1131 will not suffer structural damage.

[0125] Please see Figure 2 and Figure 3 ,or Figure 5 and Figure 6 ,or Figure 9 and Figure 10 In some embodiments, the thickness of the light-transmitting element 15 is greater than or equal to 0.3 mm.

[0126] Specifically, when the thickness of the light-transmitting element 15 is not greater than the distance between the display surface 151 and the inner circumferential surface of the handle sleeve 11, the thickness of the light-transmitting element 15 can be any value greater than or equal to 0.3mm, such as 0.3mm, 0.35mm, 0.41mm, 0.67mm, 1.11mm, 1.45mm, 1.74mm, 1.95mm, 2.11mm, or 2.98mm, or any value between any two values ​​greater than or equal to 0.3mm.

[0127] If the thickness of the light-transmitting element 15 is less than 0.3mm, the thickness of the light-transmitting element 15 is too thin and it is easy to break under external force, thus failing to protect the display screen 17. If the thickness of the light-transmitting element 15 is greater than the distance between the display surface 151 and the inner circumference of the handle sleeve 11, the distance between the display screen 17 and the display surface 151 is too large, and the content displayed on the display screen 17 is easily blocked by the display stand 1131, which limits the viewing angle of the user when observing the display screen 17. On the other hand, if the distance between the display screen 17 and the display surface 151 of the light-transmitting element 15 is too large, the content displayed on the display screen 17 will be far away from the user's eyes, making it difficult for the user to see the content displayed on the display screen 17 clearly.

[0128] The thickness of the light-transmitting element 15 is not greater than the distance between the display surface 151 and the inner circumferential surface of the handle cylinder 11, and the thickness of the light-transmitting element 15 is greater than or equal to 0.3mm. On the one hand, this ensures that the light-transmitting element 15 has sufficient structural strength and is not easily broken under external force. On the other hand, it ensures that the distance between the display screen 17 and the display surface 151 of the light-transmitting element 15 is moderate, ensuring that the display content of the display screen 17 is not blocked by the inner wall of the display platform 1131. This allows the user to have a large viewing angle when observing the display screen 17, and also ensures that the distance between the content displayed on the display screen 17 and the user's eyes is moderate, making it easy for the user to see the content displayed on the display screen 17.

[0129] Please see Figure 2 and Figure 3 ,or Figure 5 and Figure 6 ,or Figure 9 and Figure 10 In some embodiments, the thickness of the light-transmitting element 15 is greater than or equal to 0.4 mm and less than or equal to 3.5 mm.

[0130] Specifically, the thickness of the light-transmitting element 15 can be any one of 0.4mm, 0.45mm, 0.51mm, 0.67mm, 1.11mm, 1.45mm, 1.74mm, 1.95mm, 3.11mm, or 3.5mm, or any value between any two of these values. If the thickness of the light-transmitting element 15 is less than 0.4mm, it is too thin and easily breaks under external force, failing to protect the display screen 17. If the thickness of the light-transmitting element 15 is greater than 3.5mm, the distance between the display screen 17 and the display surface 151 is too large, causing the content displayed on the display screen 17 to be too far from the user's eyes, making it difficult for the user to see the content displayed on the display screen 17 clearly. In some embodiments of this application, the thickness of the light-transmitting element 15 is greater than or equal to 0.4mm and less than or equal to 3.5mm. This ensures that the light-transmitting element 15 has sufficient strength to prevent breakage, while also making the distance between the display screen 17 and the display surface 151 moderate, allowing the user to easily see the content displayed on the display screen 17.

[0131] Please see Figure 2 and Figure 3 ,or Figure 5 and Figure 6 ,or Figure 9 and Figure 10 In some embodiments, the display surface 151 is curved, and the display surface 151 protrudes in a direction away from the handle cylinder 11 to form a curved surface. It should be noted that in one example, the entire display surface 151 is curved. In another example, a portion of the display surface 151 is curved.

[0132] In some embodiments of this application, the display surface 1131 protrudes from the handle barrel 11, making it prone to impact with the ground. This can cause damage to the display surface 1131 and the light-transmitting element 15 mounted on it. However, in some embodiments, the display surface 151 is curved, meaning at least a portion of it is arched. While this arched structure makes it easier for the toothbrush 100 to contact the ground upon impact, its better load-bearing capacity reduces the risk of breakage of the light-transmitting element 15. Furthermore, the curved surface of the display surface 151 helps guide fluid flow along the display section 113 away from the light-transmitting element 15, preventing fluid from accumulating on the element.

[0133] In some embodiments, the display surface 151 is a plane. The light-transmitting element 15 with a flat display surface 151 can reduce the scattering of light when passing through the light-transmitting element 15 and also reduce the loss caused by light refraction, ensuring that more light passes through the light-transmitting element 15 and reaches the outside of the handle cylinder 11, thereby improving the clarity of the displayed information.

[0134] Please see Figure 6 and Figure 10 In some embodiments, the display surface 151 includes a first portion 1511 near the center of the light-transmitting element 15, and a second portion 1513 surrounding the first portion 1511, wherein the first portion 1511 is a plane and the second portion 1513 is a curved surface.

[0135] The first part 1511 of the display surface 151 is a plane, which can reduce the loss caused by light refraction and ensure uniform light transmission. The second part 1513 of the display surface 151 is a curved surface. The curved surface helps to guide the fluid to flow out along the display part 113 in a direction away from the light-transmitting element 15, and avoids the fluid from accumulating on the light-transmitting element 15. The curved surface has an arched structure. The arched structure has good pressure resistance and can reduce the risk of the light-transmitting element 15 breaking due to drops.

[0136] Please see Figure 6 and Figure 10 In some embodiments, the second portion 1513 and the outer wall of the free end 11312 of the display platform 1131 are formed as a continuous curved surface, which protrudes in a direction away from the handle cylinder 11.

[0137] Specifically, the first part 1511 of the display surface 151 is a plane, which can reduce the loss caused by light refraction and ensure uniform light transmission. The second part 1513 of the display surface 151 is a continuous curved surface. That is, the connection area between the second part 1513 of the light-transmitting element 15 and the free end 11312 of the display platform 1131 is a smooth continuous curved surface without obvious protrusions or depressions. There are no obvious edges or boundaries in the continuous curved surface, which makes it less likely to accumulate dirt and reduce the difficulty of cleaning and maintenance.

[0138] Please see Figure 2 and Figure 3 ,or Figure 5 and Figure 6 ,or Figure 9 and Figure 10 In some embodiments, the drive shaft 133 of the movement 13 extends from the second end face 101 of the handle sleeve 11, and the display surface 151 is inclined relative to the axial direction X of the handle sleeve 11. In the direction from the second end face 101 of the handle sleeve 11 to the first end face 102 of the handle sleeve 11, the distance between the display surface 151 and the axis of the handle sleeve 11 gradually increases.

[0139] Specifically, the mechanism 13 is housed inside the handle barrel 11, and the drive shaft 133 of the mechanism 13 extends from the second end face 101 of the handle barrel 11 and is connected to the electric toothbrush head 30. Thus, the electric toothbrush head 30 can achieve high-frequency vibration under the drive of the mechanism 13 to clean teeth. Specifically, when the display surface 151 is parallel to the axis of the handle barrel 11, that is, when the normal line of the light-transmitting element 15 (the line perpendicular to the display surface 151) forms a 90-degree angle with the axis of the handle barrel 11, the light-transmitting element 15 is horizontal; when the normal line of the light-transmitting element 15 forms a non-90-degree angle with the axial direction X of the handle barrel 11, the light-transmitting element 15 is tilted, that is, the display surface 151 is tilted relative to the axial direction X of the handle barrel 11.

[0140] The distance between the axis of the display surface 151 and the handle barrel 11 gradually increases. That is, the display surface 151 is more towards the end of the electric toothbrush 100 where the electric toothbrush head 30 is located. As a result, when the user uses the electric toothbrush 100, the light-transmitting element 15 can better adapt to the user's line of sight when brushing their teeth, ensuring that the light from the display screen 17 can pass through the light-transmitting element 15 more effectively and be transmitted in the direction of the user's line of sight, thereby making it easier for the user to observe the information displayed on the display screen 17.

[0141] Please see Figure 2 and Figure 3 ,or Figure 5 and Figure 6 ,or Figure 9 and Figure 10In some embodiments, the distance between the display surface 151 and the axial direction X of the handle cylinder 11 gradually decreases in the direction from the second end face 101 of the handle cylinder 11 to the first end face 102 of the handle cylinder 11.

[0142] Specifically, the distance between the display surface 151 and the handle barrel 11 in the axial direction X gradually decreases, that is, the display surface 151 is more towards the end of the electric toothbrush 100 away from the electric toothbrush head 30. As a result, foam or liquid on the electric toothbrush head 30 is less likely to splash onto the display surface 151, which helps to keep the light-transmitting element 15 clean and ensures that the displayed information on the display screen 17 is clearly visible.

[0143] Please see Figures 5 to 7 ,or Figures 9 to 11 In some embodiments, the light-transmitting element 15 is connected 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 the light-transmitting element 15 easier to install and remove.

[0144] Please see Figure 1 and Figure 2 ,or Figure 5 and Figure 6 ,or Figure 9 and Figure 10 In some embodiments, the drive shaft 133 of the movement 13 extends from the second end face 101 of the handle tube 11, and the cross-sectional area of ​​the handle tube 11 gradually increases in the direction from the second end face 101 of the handle tube 11 to the first end face 102 of the handle tube 11.

[0145] Specifically, the second end face 101 of the handle 11 is closer to the end of the electric toothbrush 100 where the electric toothbrush head 30 is located than the first end face 102 of the handle 11. The drive shaft 133 of the mechanism 13 extends from the second end face 101 of the handle 11 and connects to the electric toothbrush 100. Furthermore, the second end face 101 of the handle 11 has a smaller cross-sectional area, allowing at least a portion of the second end face 101 of the handle 11 to extend into the oral cavity. This facilitates the electric toothbrush 100 reaching deeper into the oral cavity to clean teeth, increasing the cleaning range of the electric toothbrush 100 and improving its cleaning effect.

[0146] Please see Figure 2 ,or Figure 5 ,or Figure 9 In some embodiments, the brush handle 10 also includes a control key 90. The control key 90 is disposed on the light-transmitting element 15 and is located on the side of the light-transmitting element 15 further away from the second end face 101 of the handle cylinder 11.

[0147] Specifically, the control key 90 is a component for user interaction with the electric toothbrush 100, and it can be electrically connected to the circuit board in the motor body 13. When the user operates the control key 90, the circuit board can transmit control signals to the motor 131, which can respond to the control signals and perform corresponding functions, such as start, stop, and mode switching. There can be one or more control keys 90.

[0148] In one embodiment, the control key 90 can be a protrusion or recess on the light-transmitting element 15. The user can trigger the control key 90 by pressing or other means to activate different functions of the electric toothbrush 100. In another embodiment, the control key 90 is a touchscreen; that is, the control key 90 is an area of ​​the display surface 151, and the user triggers the control key 90 by touching the area of ​​the display surface 151 that belongs to the control key 90. The control key 90 is located on the side of the light-transmitting element 15 further away from the second end face 101 of the handle barrel 11. That is, when the user is using the electric toothbrush 100, the control key 90 is located on the side of the light-transmitting element 15 closer to the user's hand, which facilitates the user's operation of the control key 90. Furthermore, since the display platform 1131 protrudes away from the handle barrel 11, fluid is less likely to flow towards or splash onto the control key 90, keeping the control key 90 clean and ensuring normal use of the electric toothbrush 100.

[0149] Please see Figure 2 and Figure 3 ,or Figure 5 and Figure 6 ,or Figure 9 and Figure 10 In some embodiments, at least a portion of the display surface 151 protrudes in a direction away from the handle cylinder 11.

[0150] Specifically, the protruding portion of the display surface 151 expands the user's viewing angle, allowing the user to capture the light transmitted from the light-transmitting element 15 of the display screen 17 from more angles, thus improving the user's visual experience when viewing the display screen 17 from different directions. In addition, the protruding portion of the display surface 151 has a certain curvature, which helps to disperse the reflected light transmitted from the light-transmitting element 15 of the display screen 17, reducing glare at specific angles and making the displayed information on the display screen 17 easier to read.

[0151] Please see Figure 1 , Figure 2 and Figure 3In some embodiments, the display screen 17 is located inside the handle sleeve 11. The display screen 17 is disposed opposite to the light-transmitting element 15 and forms a light-emitting channel 117. The light-emitting channel 117 includes a first segment 1171 and a second segment 1172, which are arranged along the direction from the display screen 17 to the light-transmitting element 15. In the direction from the display screen 17 to the light-transmitting element 15, the light-transmitting area of ​​the first segment 1171 remains unchanged, while the light-transmitting area of ​​the second segment 1172 gradually increases.

[0152] Specifically, the display screen 17 is located inside the handle sleeve 11, and is positioned opposite to the light-transmitting element 15, forming a light-emitting channel 117. The light-emitting channel 117 is the transmission path for light; light can pass through the light-emitting channel 117 to the light-transmitting element 15 and then exit to the outside of the handle sleeve 11, allowing the user to observe the display information carried in the light. The first segment 1171 of the light-emitting channel 117 maintains a constant light-passing area, preventing light dispersion and deviation, ensuring light transmission within a relatively concentrated area, reducing energy loss during transmission, and thus maintaining light intensity to ensure display information is transmitted to the light-transmitting element 15. The second segment 1172 of the light-emitting channel 117 gradually increases in light-passing area, expanding the light emission angle and allowing light to be evenly distributed on the surface of the light-transmitting element 15, preventing excessively strong or dim local brightness on the surface of the light-transmitting element 15, and improving the display effect of the display screen 17.

[0153] Please see Figure 1 , Figure 2 and Figure 3 In some embodiments, the angle between the inner surface 152 of the second segment 1172 and the axis of the display screen 17 is greater than or equal to 20° and less than or equal to 70°.

[0154] Specifically, the angle between the inner surface 152 of the second segment 1172 and the axis of the display screen 17 can be any one of 20°, 23°, 26°, 34°, 35°, 39°, 46°, 56°, 67°, or 70°, or any value between any two of these values. If the angle between the inner surface 152 of the second segment 1172 and the axis of the display screen 17 is less than 20°, the light-passing area of ​​the second segment 1172 is too large, which can easily lead to light dispersion and make it easy for the light to be blocked by the components inside the electric toothbrush 100. If the angle between the inner surface 152 of the second segment 1172 and the axis of the display screen 17 is greater than 70°, the light-passing area of ​​the second segment 1172 is too small, resulting in a small area of ​​the first surface 173, which is not conducive to the user observing the displayed information on the display screen 17.

[0155] The angle between the inner surface 152 of the second segment 1172 and the axis of the display screen 17 is greater than or equal to 20° and less than or equal to 70°, which can ensure that the light is focused and the line of sight is not easily blocked by the internal components of the electric toothbrush 100, making it suitable for users to observe the display information on the display screen 17.

[0156] Please see Figure 2 and Figure 3 ,or Figure 5 and Figure 6 ,or Figure 9 and Figure 10 In some embodiments, the height of the protrusion of the display platform 1131 relative to the handle cylinder 11 is no more than 8mm.

[0157] Specifically, the height of the protrusion of the display platform 1131 relative to the handle cylinder 11 can be any value less than 8mm, such as 0.8mm, 1.2mm, 2.8mm, 3.3mm, 4.4mm, 5.4mm, 6.4mm, 7.2mm, 7.8mm, or 8mm, or any value between any two values ​​less than 8mm. If the height of the protrusion of the display platform 1131 relative to the handle cylinder 11 and the light-transmitting element 15 is greater than 8mm, then the height of the display platform 1131 from the handle cylinder 11 is too large. When the electric toothbrush 100 is dropped, the display platform 1131 is likely to hit the ground first, making it prone to damage. In addition, if the height of the display platform 1131 from the handle cylinder 11 is too large, it may cause the center of gravity of the electric toothbrush 100 to deviate too much from the axis X of the handle cylinder 11, affecting the stability of the electric toothbrush 100 when placed.

[0158] The height of the protrusion of the display stand 1131 relative to the handle barrel 11 is no more than 8mm, which makes the brush handle 10 compact. When the electric toothbrush 100 falls, the display stand 1131 is less likely to hit the ground first, reducing the risk of damage to the display stand 1131 due to accidental drops or impacts. In addition, it also ensures that the center of gravity of the electric toothbrush 100 does not deviate too much from the axis X of the handle barrel 11, so as not to affect the stability when placed.

[0159] Please see Figure 2 and Figure 3 ,or Figure 5 and Figure 6 ,or Figure 9 and Figure 10 In some embodiments, the connection between the outer peripheral surface 1134 of the display platform 1131 and the second surface 111 of the handle cylinder 11 is a smooth concave transition, and the curvature of the concave curve gradually increases.

[0160] Specifically, the concave shape refers to the arc-shaped structure formed at the connection between the outer peripheral surface 1134 of the display stand 1131 and the second surface 111 of the handle cylinder 11, curving inwards towards the handle cylinder 11. This smooth concave transition avoids dead angles at the connection, preventing dirt accumulation and facilitating cleaning. The gradually increasing curvature of the concave curve hinders water flow from the second surface 111 of the handle cylinder 11 to the outer peripheral surface 1134 of the display stand 1131, reducing the possibility of water accumulation on the surface of the light-transmitting element 15 and ensuring that the user can clearly see the content of the display screen 17 through the light-transmitting element 15.

[0161] Please see Figure 2 and Figure 3 ,or Figure 5 and Figure 6 ,or Figure 9 and Figure 10 In some embodiments, the light-transmitting element 15 has a first projection and the handle cylinder 11 has a second projection in a plane passing through the axis of the handle cylinder 11 and perpendicular to the axis of the display screen 17. In the first direction of the axial direction A of the display surface 151, the ratio of the outer contour of the first projection to the outer contour of the second projection is greater than or equal to 0.6 and less than or equal to 1.5.

[0162] Specifically, the ratio of the outer contour of the first projection to the outer contour of the second projection can be any one of 0.6, 0.7, 0.8, 0.9, 1.1, 1.25, 1.3, 1.4, 1.45, or 1.5, or any value between any two values. If the ratio of the outer contour of the first projection to the outer contour of the second projection is less than 0.6, the size of the light-transmitting element 15 is too small, limiting the light transmission area, which may cause the displayed content to be blocked, reducing the display effect of the display screen 17 and making it difficult for the user to observe the displayed content. If the ratio of the outer contour of the first projection to the outer contour of the second projection is greater than 1.5, the size of the light-transmitting element 15 is too large, and it is more likely to be damaged or broken in the event of an accidental drop or impact. In addition, an excessively large light-transmitting element 15 increases the weight and size of the electric toothbrush 100, increasing the risk of the electric toothbrush 100 being damaged in the event of an accidental drop.

[0163] The ratio of the outer contour of the first projection to the outer contour of the second projection is greater than or equal to 0.6 and less than or equal to 1.5, which can ensure that the light has sufficient transmission area, the displayed content is not blocked, and the user can easily observe the display information in the light-transmitting display area. At the same time, it avoids the light-transmitting component 15 being too large, reducing the risk of damage due to drops.

[0164] Please see Figure 2 and Figure 3In some embodiments, the plane passing through the axis of the handle cylinder 11 and perpendicular to the axis A of the display screen 17 is the longitudinal plane, and the cross section of the portion of the display platform 1131 protruding relative to the handle cylinder 111 obtained by the longitudinal plane is rectangular, trapezoidal or inverted trapezoidal.

[0165] Specifically, the display screen 17 is parallel to the light-transmitting element 15, which ensures that the light propagation path is consistent, thereby achieving a uniform distribution of brightness in the display screen 17 and improving the visual effect. The cross-section of the part of the display platform 1131 protruding relative to the handle cylinder 111, when cut by the longitudinal plane, is rectangular, trapezoidal, or inverted trapezoidal. That is, in the axial direction A of the display surface 151, the cross-section of the outer contour of the part of the display platform 1131 protruding relative to the handle cylinder 11 is rectangular, trapezoidal with a larger top and a smaller bottom, or trapezoidal with a smaller top and a larger bottom. Thus, the display platform 1131 can guide the fluid, ensuring that the fluid flows to both sides of the display platform 1131 and preventing the fluid from flowing to the light-transmitting element 15, thereby keeping the light-transmitting element 15 clean.

[0166] Please see Figure 2 and Figure 3 In some embodiments, the brush handle 10 also includes a light shield 60 disposed between the display screen 17 and the handle cylinder 11.

[0167] Specifically, if light is transmitted from the display screen 17 to the handle barrel 11, it may interfere with the light emitted from the light-transmitting element 15 to the outside of the handle barrel 11, affecting the display effect of the display screen 17 and making it impossible for the user to clearly see the information. Furthermore, light leakage may also affect the lifespan of components inside the handle barrel 11. The light-shielding element 60 can be one or more. The light-shielding element 60 is positioned between the display screen 17 and the handle barrel 11, absorbing and blocking light from being transmitted from the display screen 17 to the inside of the handle barrel 11, preventing light transmission and scattering inside the handle barrel 11, reducing reflection and glare, ensuring the brightness and clarity of the display screen 17, and helping the user to observe the displayed information.

[0168] Please see Figure 2 and Figure 3 In some embodiments, a light-shielding member 60 is disposed between the display screen 17 and the mechanism 13, and the light-shielding member 60 is at least used to block light from being transmitted toward the mechanism 13.

[0169] Specifically, if light is transmitted from the display screen 17 to the mechanism 13, it may interfere with the light emitted through the light-transmitting element 15 to the outside of the handle sleeve 11, affecting the display effect of the display screen 17 and making it impossible for the user to clearly see the information. Furthermore, light leakage may also affect the lifespan of the mechanism 13. The light-shielding element 60 can be one or more. The light-shielding element 60 is positioned between the display screen 17 and the mechanism 13, absorbing and blocking light from being transmitted from the display screen 17 to the mechanism 13, preventing light transmission and scattering within the mechanism 13, reducing reflection and glare, ensuring the brightness and clarity of the display screen 17, and helping the user to observe the displayed information.

[0170] Please see Figure 2 and Figure 3 In some embodiments, the light-shielding member 60 is made of soft rubber or foam. Soft rubber and foam can recover their original shape after being subjected to force, effectively absorbing and dispersing the force. The light-shielding member 60, made of soft rubber or foam material, can absorb and reduce the forces that may arise between the display screen 17 and the handle cylinder 11, and / or between the display screen 17 and the mechanism 13 due to impact and vibration, reducing damage to the display screen 17, handle cylinder 11, and / or mechanism 13 caused by these forces. Furthermore, soft rubber and foam can reduce wear caused by contact between the display screen 17 and the handle cylinder 11, and / or between the display screen 17 and the mechanism 13, helping to extend the service life of the display screen 17, handle cylinder 11, and / or mechanism 13.

[0171] Please see Figure 2 and Figure 3 ,or Figure 5 and Figure 6 ,or Figure 9 and Figure 10 In some embodiments, in the first direction A of the axial direction A of the display surface 151 and the axial direction X of the light-transmitting element 15, the ratio of the outer contour of the projection of the light-transmitting element 15 onto the projection surface to the outer contour of the projection of the handle cylinder 11 onto the projection surface is greater than or equal to 0.7 and less than or equal to 0.95. The projection surface is parallel to the axial direction X of the handle cylinder 11 and perpendicular to the central axis of the display platform 1131.

[0172] Specifically, the ratio of the outer contour dimension of the light-transmitting element 15 to the outer contour dimension of the handle barrel 11 can be any one of 0.7, 0.71, 0.78, 0.79, 0.81, 0.85, 0.88, 0.91, 0.93, or 0.95, or any value between any two of these values. If the ratio of the outer contour dimension of the light-transmitting element 15 to the outer contour dimension of the handle barrel 11 is less than 0.7, the size of the light-transmitting element 15 is too small, limiting the light transmission area, which may cause the displayed content to be blocked, reducing the display effect of the display screen 17 and making it difficult for the user to observe the displayed content. If the ratio of the outer contour dimension of the light-transmitting element 15 to the outer contour dimension of the handle barrel 11 is greater than 0.95, the size of the light-transmitting element 15 is too large, and it is more likely to be damaged or broken in the event of an accidental drop or impact. In addition, an excessively large light-transmitting element 15 increases the weight and size of the electric toothbrush 100, increasing the risk of the electric toothbrush 100 being damaged in the event of an accidental drop.

[0173] The ratio of the outer contour dimension of the light-transmitting element 15 to the outer contour dimension of the handle cylinder 11 is greater than or equal to 0.7 and less than or equal to 0.95. This ensures that the light has sufficient transmission area, the displayed content is not obstructed, and the user can easily observe the information displayed on the display screen 17. At the same time, it avoids the light-transmitting element 15 being too large, reducing the risk of damage due to drops.

[0174] Please see Figure 2 and Figure 3 In some embodiments, the display unit 113 further includes a frame 1132, which is disposed inside the handle tube 11 and connected to the handle tube 11 and / or the mechanism 13. The frame 1132 includes a first side and a second side facing away from each other. The first side of the frame 1132 faces the light-transmitting element 15 and is provided with a support surface for supporting the light-transmitting element 15. The second side of the frame 1132 faces the mechanism 13 and is connected to the display screen 17.

[0175] Specifically, the frame 1132 provides support for the light-transmitting element 15, reducing displacement and damage caused by vibration of the mechanism 13 or external impact. The frame 1132 is made of materials including, but not limited to, plastic, silicone, or metal. When the frame 1132 is made of plastic, it is lightweight, low-cost, and easy to process. When the frame 1132 is made of metal, it has high strength, a long service life, and is easy to clean and maintain. The frame 1132 is located inside the handle barrel 11, reducing the space occupied by the handle barrel 11, making the overall structure of the electric toothbrush 100 more compact and easier to hold and operate. The frame 1132, connected to the handle barrel 11 and / or the mechanism 13, also provides some support and protection for the handle barrel 11. The support surface can disperse forces, reducing the impact of external impacts on the display unit 113 and extending its service life.

[0176] Please see Figure 2 and Figure 3 In some embodiments, the display unit 113 further includes a connection unit 1133, one end of which is connected to the mechanism 13 and the other end of which is connected to the frame 1132.

[0177] Specifically, the connecting unit 1133 is used to connect the movement 13 and the frame 1132. There can be one or more connecting units 1133. The connecting unit 1133 includes, but is not limited to, connecting rods, connecting wires, or connecting plates. The connecting unit 1133 can ensure a firm connection between the movement 13 and the frame 1132, and reduce possible displacement or vibration between the movement 13 and the frame 1132.

[0178] Please see Figure 2 and Figure 3 In some embodiments, a second buffer 52 is provided between the display screen 17 and the frame 1132, and the second buffer 52 is used to buffer the force between the display screen 17 and the frame 1132.

[0179] Specifically, the second buffer 52 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 second buffer 52 can recover its original shape after being subjected to force, effectively absorbing and dispersing the force. The second buffer is located between the display screen 17 and the frame 1132, absorbing and reducing the forces that may be generated between the display screen 17 and the frame 1132 due to impact and vibration, thus reducing damage to the display screen 17 and the frame 1132. Furthermore, the second buffer can reduce wear caused by contact between the display screen 17 and the frame 1132, helping to extend the service life of both the display screen 17 and the frame 1132.

[0180] Figures 1 to 3 In this embodiment, the display screen 17 is disposed within the space inside the handle sleeve 11. Compared to Figures 1 to 3 In terms of implementation methods, Figures 5 to 7 and Figures 9 to 11 In both implementations, the display screen does not occupy the space inside the handle cylinder 11.

[0181] Please see Figures 5 to 7 ,or Figures 9 to 11 The display stand 1131 has a mounting cavity 11313, and the display screen 17 is housed in the mounting cavity 11313.

[0182] Specifically, the display platform 1131 protrudes away from the handle sleeve 11, thereby forming a mounting cavity 11313, which communicates with the space inside the handle sleeve 11. On one hand, the mounting cavity 11313 provides a space for the display screen 17, reducing interference from the external environment. On the other hand, with the display screen 17 housed within the mounting cavity 11313, it is less likely to be obstructed by the display platform 1131 compared to having it located inside the handle sleeve 11, thus reducing the distance between the display screen 17 and the light-transmitting element 15 and facilitating user observation. Furthermore, with the mechanism 13 housed inside the handle sleeve 11 and the display screen 17 housed within the mounting cavity 11313, the display screen 17 does not occupy space inside the handle sleeve 11, thereby reducing the size of the handle sleeve 11 and making it easier for the user to hold. On the other hand, when the electric toothbrush 100 is working, the motor 13 and the display screen 17 are housed in different spaces and kept at a certain distance. This can prevent the display information from becoming blurry due to the vibration of the motor 13, and can also prevent the display screen 17 from shifting due to vibration, thereby improving the service life of the display screen 17.

[0183] Please see Figure 5 , Figure 6 and Figure 7 ,or Figure 9 , Figure 10 and Figure 11 In some embodiments, the display stand 1131 and the handle tube 11 are integrally formed. That is, the display stand 1131 and the handle tube 11 are an integral structure, which can improve the bonding strength between the display stand 1131 and the handle tube 11, prevent the display stand 1131 and the handle tube 11 from separating during the operation of the electric toothbrush 100, thereby ensuring the stability and reliability of the electric toothbrush 100.

[0184] In other embodiments, the display stand 1131 and the handle sleeve 11 are separately formed, meaning they are two different structures. In one example, the display stand 1131 and the handle sleeve 11 and / or the mechanism 13 can be joined together using a detachable connection method, including but not limited to screw connections, snap-fit ​​connections, or threaded connections. In another example, the display stand 1131 and the handle sleeve 11 and / or the mechanism 13 can be joined together using 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 11.

[0185] Please see Figure 5 , Figure 6 and Figure 7 ,or Figure 9 , Figure 10 and Figure 11In some embodiments, the display platform 1131 includes an extension 11315, the extension 11315 includes a free end 11312, the light-transmitting element 15 is mounted on the free end 11312, and the cross-sectional area of ​​the outer peripheral surface of the extension 11315 gradually increases in the axial direction A of the display surface 151.

[0186] Specifically, the extension 11315 is the portion of the display stand 1131 that extends from the connection point away from the handle sleeve 11. The cross-sectional shape of the extension 11315 includes, but is not limited to, a perfect circle, an ellipse, or a polygon. The material of the extension 11315 includes, but is not limited to, plastic, silicone, or metal. When the extension 11315 is made of plastic, it is lightweight, has low cost, and is easy to process. When the extension 11315 is made of silicone, it is soft, has good elasticity, and will not damage oral tissues.

[0187] When the extension 11315 is made of metal, it has high strength, a long service life, and is easy to clean and maintain. The extension 11315 provides sufficient installation space for the light-transmitting element 15. When the display screen 17 is installed on the display unit 113, the extension 11315 provides sufficient installation space for both the light-transmitting element 15 and the display screen 17. The free end 11312 is located at the end of the extension 11315 away from the handle sleeve 11 and is used to install the light-transmitting element 15. Light can propagate from the free end 11312 to the outside of the handle sleeve 11. The cross-sectional shape of the free end 11312 includes, but is not limited to, a perfect circle, an ellipse, or a polygon. It is understood that the cross-sectional shape of the free end 11312 matches the cross-sectional shape of the light-transmitting element 15, thereby allowing the free end 11312 and the light-transmitting element 15 to fit tightly together, preventing external dust or moisture from entering the display stand 1131.

[0188] The cross-sectional area of ​​the outer peripheral surface of the extension 11315 gradually increases. On the one hand, this expands the light emission angle, allowing the light to be evenly distributed on the surface of the light-transmitting element 15, preventing excessively strong or dark local brightness on the surface of the light-transmitting element 15, and improving the display effect of the display screen 17. On the other hand, the gradually increasing cross-sectional area of ​​the extension 11315 allows the extension 11315 to have a certain tilt angle relative to the handle cylinder 11, thereby forming a barrier in the fluid flow path, guiding the fluid to flow in the guide groove 115, preventing the fluid from flowing directly from the outer peripheral surface of the extension 11315 to the light-transmitting element 15, thus ensuring the clarity of the light-transmitting element 15, and ensuring that the user can clearly see the display content of the display screen 17 through the light-transmitting element 15.

[0189] Please see Figure 5 , Figure 6 and Figure 7 ,or Figure 9 , Figure 10 and Figure 11 In some embodiments, the angle between the outer peripheral surface of the extension 11315 and the second surface 111 of the handle cylinder 11 is greater than or equal to 30° and less than or equal to 90°.

[0190] Specifically, the angle between the outer peripheral surface of the extension 11315 and the second surface 111 of the handle cylinder 11 refers to the angle formed at the intersection of the outer peripheral surface of the extension 11315 and the second surface 111 of the handle cylinder 11, that is, the relative inclination between the extension 11315 and the handle cylinder 11. The angle between the extension 11315 and the handle cylinder 11 can be any one of 30°, 35°, 40°, 43°, 54°, 57°, 67°, 78°, 84° or 90° or any value between any two of these values.

[0191] If the angle between the outer peripheral surface of the extension 11315 and the second surface 111 of the handle cylinder 11 is less than 30°, the distance between them will be too close, limiting the capacity and depth of the guide channel 115, making it difficult for water to flow along it. Furthermore, an excessively small angle will also cause the distance between the light-transmitting element 15 and the handle cylinder 11 to be too close, making it easy for fluid to splash onto the surface of the light-transmitting element 15 and affecting the display effect. If the angle between the outer peripheral surface of the extension 11315 and the second surface 111 of the handle cylinder 11 is greater than 90°, the connection between them will be too gentle, allowing fluid to flow from the second surface 111 of the handle cylinder 11 to the outer peripheral surface of the extension 11315 and accumulate on the surface of the light-transmitting element 15, resulting in water stains on the surface of the light-transmitting element 15 and affecting the visibility of the displayed content on the screen 17.

[0192] The angle between the outer peripheral surface of the extension 11315 and the second surface 111 of the handle cylinder 11 is greater than or equal to 30° and less than or equal to 90°. This allows fluid to flow more easily along the guide groove 115, preventing fluid from flowing from the second surface 111 of the handle cylinder 11 to the outer peripheral surface of the extension 11315 and accumulating on the surface of the light-transmitting element 15. This reduces the likelihood of fluid accumulating on the surface of the light-transmitting element 15, helping to maintain the clarity of the light-transmitting element 15 and ensuring that the user can clearly see the content of the display screen 17 through the light-transmitting element 15.

[0193] Please see Figure 5 , Figure 6 and Figure 7 ,or Figure 9 , Figure 10 and Figure 11In some embodiments, on a first plane, the handle cylinder 11 has a second projection, the extension 11315 has a third projection, and the distance between the outer contour of the second projection and the outer contour of the third projection is greater than 2 mm.

[0194] Specifically, the distance between the outer contour of the second projection and the outer contour of the third projection can be any value greater than 2mm, such as 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 11mm or 12mm, or any value between any two values ​​greater than 2mm.

[0195] If the distance between the outer contours of the second projection and the third projection is less than 2mm, the fluid will flow too close from the handle cylinder 11 to the light-transmitting element 15, and the fluid will easily flow to the surface of the light-transmitting element 15. If the distance between the outer contours of the second projection and the third projection is greater than 2mm, the distance between the fluid and the light-transmitting element 15 will be increased, and the fluid will not easily flow to the surface of the light-transmitting element 15.

[0196] Please see Figure 5 , Figure 6 and Figure 7 ,or Figure 9 , Figure 10 and Figure 11 In some embodiments, the connection between the extension 11315 and the handle cylinder 11 is chamfered. The chamfered connection allows for a smooth transition between the extension 11315 and the handle cylinder 11, avoids the formation of dead corners at the connection, prevents dirt from accumulating, and facilitates cleaning of the connection.

[0197] Please see Figure 5 , Figure 6 and Figure 7 ,or Figure 9 , Figure 10 and Figure 11 In some embodiments, the display platform 1131 and the handle cylinder 11 are formed separately, and a first sealing member 71 is provided between the display platform 1131 and the handle cylinder 11.

[0198] The first sealing element 71 can be made of various materials such as rubber, silicone, and polypropylene. There can be one or more first sealing elements 71, which is not limited in this application. The first sealing element 71 can be separately molded and then fitted onto the display stand 1131 or the handle cylinder 11, or it can be fitted onto the display stand 1131 or the handle cylinder 11 in a form such as overmolding. The first sealing element 71 can seal the gap between the outer peripheral surface 1134 of the display stand 1131 and the handle cylinder 11, preventing fluid from flowing into the handle cylinder 11 through this gap, thus improving the waterproofness of the electric toothbrush 100. Furthermore, the first sealing element 71 is low in cost and does not occupy additional installation space.

[0199] Please see Figure 5, Figure 6 and Figure 7 ,or Figure 9 , Figure 10 and Figure 11 In some embodiments, the height by which the display platform 1131 protrudes relative to the handle cylinder 11 in the axial direction A of the display surface 151 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 cylinder 11 can be any one or any value between any two of the following: 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.

[0200] If the height of the protrusion of the display stand 1131 relative to the handle cylinder 11 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 11 is greater than 10mm, the height of the display stand 1131 from the handle cylinder 11 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 11 may cause the center of gravity of the electric toothbrush 100 to deviate too much from the axis X of the handle cylinder 11, affecting the stability of the electric toothbrush 100 when placed.

[0201] The height of the protrusion of the display stand 1131 relative to the handle tube 11 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 and also make the brush handle 10 compact. When the electric toothbrush 100 falls, 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.

[0202] Please see Figure 5 , Figure 6 and Figure 7 ,or Figure 9 , Figure 10 and Figure 11 In some embodiments, the handle cylinder 11 has a second projection in a plane passing through the axis of the handle cylinder 11 and perpendicular to the axis of the display screen 17, and the display platform has a fourth projection. The outer contour of the fourth projection is larger than that of the second projection. Compared to the fact that the outer contour of the fourth projection is larger than that of the second projection, the display platform 1131 is larger, thereby increasing the design size of the light-transmitting element 15 and the display screen 17, and making it easier for the user to observe the displayed content of the display screen 17 through the light-transmitting element 17.

[0203] In addition, in some embodiments, the extension direction of the bristles 31 is approximately the same as the axial direction A of the display surface 151. Thus, when the electric toothbrush 100 is placed on a structure with a resting surface, such as a table, and both the outer peripheral surface of the body 111 and the outer peripheral surface 1134 of the display platform 1131 are 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 table, the bristles 31 will not come into contact with the resting surface, thereby preventing the bristles 31 from being contaminated.

[0204] Please see Figure 5 , Figure 6 and Figure 7 ,or Figure 9 , Figure 10 and Figure 11 In some embodiments, the display surface 151 and / or the inner surface 152 are provided with a light-shielding layer 80, which includes an inner ring 81 and an outer ring 83 facing away from each other. In the circumferential direction of the light-transmitting element 15, the outer ring 83 is further away from the axis of the light-transmitting element 15 than the inner ring 81. The light-shielding layer 80 at least covers the light-shielding area on the light-transmitting element 15 corresponding to the area between the peripheral side surface of the display screen 17 and the inner wall of the display platform 1131.

[0205] Specifically, in some embodiments, since there is a certain gap between the peripheral side of the display screen 17 and the inner wall of the display platform 1131, and the light-transmitting element 15 has an area corresponding to the gap, light can easily pass through the space between the gap and the area corresponding to the gap and scatter into the inside of the handle barrel 11. This makes it difficult for the user to clearly observe the display information on the display screen 17, affecting the display effect of the display screen 17. The light may also affect the lifespan of the components inside the handle barrel 11. Therefore, the light-shielding layer 80 can absorb and block light from being transmitted from the display screen 17 into the inside of the handle barrel 11, preventing light from being transmitted and scattered inside the handle barrel 11, reducing reflection and glare, ensuring the brightness and clarity of the display screen 17, helping the user to observe the display information, and also preventing light from affecting the components inside the handle barrel 11.

[0206] Please see Figure 5 , Figure 6 and Figure 7 ,or Figure 9 , Figure 10 and Figure 11 In some embodiments, in the projection plane projected in the axial direction X toward the handle cylinder 11, the projection of 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 height of the inner surface 152 of the second portion 1513 protruding relative to the handle cylinder 11 is not greater than the height of the second surface 175 of the display screen 17 protruding relative to the handle cylinder 11.

[0207] Specifically, within the projection plane projected along the axial direction X of the handle cylinder 11, 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 light, ensuring clear visibility of the displayed information. The inner surface 152 of the second portion 1513 protrudes no more than the second surface 175 of the display screen 17 protrudes no more than the second surface 175 of the display screen 17 relative to the handle cylinder 11. Therefore, the displayed content of the display screen 17 is not easily obstructed by the display stand 1131, and the user can see the displayed content of the display screen 17 through the second portion 1513.

[0208] Please see Figure 5 , Figure 6 and Figure 7 ,or Figure 9 , Figure 10 and Figure 11 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.

[0209] 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.

[0210] Please see Figure 5 , Figure 6 and Figure 7 ,or Figure 9 , Figure 10 and Figure 11 In some embodiments, the display screen 17 is connected to the inner surface 152 of the light-transmitting element 15 near the display screen 17.

[0211] Specifically, the display screen 17 is connected to the inner surface 152 of the light-transmitting element 15 near 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.

[0212] Please see Figure 5 , Figure 6 and Figure 7 ,or Figure 9 , Figure 10 and Figure 11In some embodiments, the display screen 17 and the inner surface 152 of the light-transmitting element 15 near the display screen 17 are connected by a connecting optical adhesive.

[0213] 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 light to be transmitted to the light-transmitting element 15, improves the light transmittance, and thus makes the display content of the display screen 17 clearer and more visible.

[0214] Please see Figure 5 , Figure 6 and Figure 7 ,or Figure 9 , Figure 10 and Figure 11 In some embodiments, the projection of the display screen 17 toward the axial direction X of the handle barrel 11 is located within the range of the projection of the light-transmitting element 15 toward the axial direction X of the handle barrel 11.

[0215] Specifically, the projection of the display screen 17 toward the axis X of the handle barrel 11 is within the range of the projection of the light-transmitting element 15 toward the axis X of the handle barrel 11. That is, the size of the light-transmitting element 15 is larger than the size of the display screen 17, so that the light is not blocked. In other words, the light 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.

[0216] Please see Figure 5 , Figure 6 and Figure 7 ,or Figure 9 , Figure 10 and Figure 11 In some embodiments, in a plane passing through the axis of the handle cylinder 11 and perpendicular to the axis of the display screen 17, the light-transmitting element 15 has a first projection, and the display screen 17 has a fifth projection. The distance between the outer contour of the fifth projection and the outer contour of the sixth projection is greater than 1 mm. Specifically, the distance between the outer contour of the fifth projection and the outer contour of the sixth projection can be any value greater than 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 1 mm.

[0217] If the distance between the outer contours of the fifth projection and the sixth projection is less than 1mm, the gap between the outer contour of the display screen 17 and the outer contour of 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 content displayed at the edge of the display screen 17 may be obstructed by the display stand and cannot be observed by the user, affecting the user experience. In some embodiments of this application, the distance between the outer contours of the fifth projection and the sixth projection is greater than 1mm, ensuring that the light from the display screen 17 passes through the light-transmitting element 15, making it easier for the user to see the content displayed on the display screen 17 and improving the user experience.

[0218] Please see Figure 5 , Figure 6 and Figure 7 ,or Figure 9 , Figure 10 and Figure 11 In some embodiments, the brush handle 10 is provided with a display window 119, which extends through the display part 113 and the handle tube 11. A light-transmitting element 15 is provided in the display window 119. The light-transmitting element 15 is spaced from the inner surface 152 of the display screen 17 and the mechanism 13. The display screen 17 is connected to the inner surface 152 of the light-transmitting element 15 and is electrically connected to the mechanism 13.

[0219] Specifically, the display window 119 extends through the display section 113 and the handle sleeve 11, allowing light to pass through the display window 119 after emanating from the display screen 17 and reach the outside. The gap between the mechanism 13 and the display screen 17 prevents vibrations of the mechanism 13 during operation from interfering with the light, ensuring the clarity and stability of the display effect. The display screen 17 is connected to the inner surface 152 of the light-transmitting element 15, shortening the distance between the display screen 17 and the light-transmitting element 15, ensuring clear display of the content and facilitating user observation of the content displayed on the display screen 17.

[0220] Please see Figure 5 , Figure 6 and Figure 7 ,or Figure 9 , Figure 10 and Figure 11 In some embodiments, the mechanism 13 includes a main control board 135 and a wiring section 137. The wiring section 137 is located on the main control board 135 and exposed from the display window 119. The display screen 17 includes a connection section 171, which is electrically connected to the wiring section 137 via a connection cable.

[0221] Specifically, the main control board 135 receives and processes information, and controls the operation of other components such as the motor 131 and the display screen 17 according to a preset algorithm. The wiring section 137 is used to connect the main control board 135 to other electrical components. In this embodiment, the interface of the display screen 17 is the connection section 171. The connection section 171 is used for electrical connection with the wiring section 137. There can be one or more wiring sections 137, and there can be one or more connection sections 171. Through the connection cable, the main control board 135 can control the display screen 17 to emit light, thereby realizing the display function. The wiring section 137 is located on the main control board 135 and exposed to the display window 119, so that the user can intuitively view the wiring section 137, facilitating maintenance and replacement.

[0222] Please see Figure 5 , Figure 6 and Figure 7 ,or Figure 9 , Figure 10 and Figure 11 In some embodiments, the difference between the length of the connecting wire and the distance between the connecting part 171 and the wiring part 137 is greater than or equal to 10 mm.

[0223] Specifically, the distance between the connecting part 171 and the wiring part 137 is the shortest distance between them. The difference between the length of the connecting wire and the distance between the connecting part 171 and the wiring part 137 can be 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, or 19mm. This provides a certain length redundancy for the connecting wire, allowing for easier assembly during manual assembly and preventing a break in the circuit caused by pulling on the connecting wire after it has been electrically connected to the wiring part 137 and the display screen 17 is assembled.

[0224] Please see Figure 5 , Figure 6 and Figure 7 ,or Figure 9 , Figure 10 and Figure 11 In some embodiments, a portion of the connecting wire 137 is sandwiched between the inner wall of the display screen 17 and the display stand 1131.

[0225] Specifically, a portion of the connecting cable 137 is sandwiched between the display screen 17 and the inner wall of the display stand 1131, which helps to fix the connecting cable, prevent the connecting cable from falling off, and also makes the interior of the display stand 1131 neater.

[0226] Please see Figure 5 , Figure 6 and Figure 7 ,or Figure 9 , Figure 10 and Figure 11 In some embodiments, a third buffer 53 is provided between the display platform 1131 and the display screen 17, and a portion of the connecting line 137 is sandwiched between the buffer and the inner wall of the display platform 1131.

[0227] Specifically, the third buffer 53 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 third buffer 53 can recover its original shape after being subjected to force, effectively absorbing and dispersing the force. The third buffer 53 is located between the display platform 1131 and the display screen 17, and can buffer the electric toothbrush 100 when subjected to external forces, dispersing and absorbing the force, reducing direct damage to the display platform 1131 and the display screen 17. A portion of the connecting cable 137 is sandwiched between the buffer and the inner wall of the display platform 1131, which helps to secure the connecting cable and prevent damage caused by vibration or impact.

[0228] Please see Figure 9 , Figure 10 and Figure 11 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 11.

[0229] 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 11, 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 11.

[0230] 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.

[0231] 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. When the electric toothbrush 100 is subjected to impact, the reinforcing part 1134 can distribute stress through the handle cylinder 11, 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 11 also limits the relative displacement between the display platform 1131 and the handle cylinder 11, preventing loosening or misalignment of the display platform 1131 and the handle cylinder 11 due to long-term use or vibration.

[0232] Please see Figure 9 , Figure 10 and Figure 11 In some embodiments, the reinforcing part 1134 is provided with a first mating part 11341, and the display platform 1131 is provided with a second mating part. The first mating part 11341 and the second mating part cooperate to position the reinforcing part 1134 and the display platform 1131.

[0233] Specifically, the first mating part 11341 and the second mating part are used to position the reinforcing part 1134 and the display platform 1131. In one example, the first mating part 11341 can be a snap-fit ​​structure provided on the reinforcing part 1134, and the second mating part can be provided in a corresponding slot on the display platform 1131. After the snap-fit ​​is inserted into the slot, the reinforcing part 1134 and the display platform 1131 can be connected through the snap-fit ​​action, preventing relative displacement between the reinforcing part 1134 and the display platform 1131. In another example, the first mating part 11341 can be a threaded hole on the reinforcing part 1134, and the second mating part can be a corresponding threaded post on the display platform 1131. The reinforcing part 1134 and the display platform 1131 are connected and aligned by threaded engagement. In yet another example, the first mating part 11341 can be a positioning pin on the reinforcing part 1134, and the second mating part can be a corresponding pin hole on the display platform 1131. By inserting the positioning pin into the pin hole, it is possible to ensure that the reinforcing part 1134 is aligned with the display platform 1131, preventing displacement or rotation of the reinforcing part 1134 and the display platform 1131 during use. The cooperation of the first mating part 11341 and the second mating part allows the reinforcing part 1134 and the display platform 1131 to be accurately positioned and connected, improving the accuracy and efficiency of electric toothbrush 100 assembly.

[0234] Please see Figure 9 , Figure 10 and Figure 11 In some embodiments, the reinforcing part 1134 is a reinforcing rib integrally formed with the display platform 1131.

[0235] Specifically, the reinforcing rib and the display platform 1131 are integrally molded, meaning they form a single structural unit. This enhances the bonding strength between the reinforcing rib and the display platform 1131, preventing separation during the operation of the electric toothbrush 100 and ensuring the stability and reliability of their operation. The reinforcing rib also disperses external forces, reducing deformation and displacement of the display platform 1131 under stress. This prevents the display platform 1131 from cracking after prolonged use, thereby strengthening its structural integrity.

[0236] Please see Figure 9 , Figure 10 and Figure 11 In some embodiments, the reinforcing part 1134 is connected to the movement 13 by fasteners.

[0237] Specifically, fasteners include, but are not limited to, screws, nuts, washers, and other components used to connect and secure parts. There may be one or more fasteners. Fasteners connect the reinforcing part 1134 to the mechanism 13, preventing the reinforcing part 1134 from loosening or falling off.

[0238] Please see Figure 9 , Figure 10 and Figure 11 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.

[0239] Specifically, the display platform 1131 and the reinforcing part 1134 together form a first mounting groove 1135. Within the projection plane projected along the axial direction X of the handle sleeve 11, 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 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.

[0240] Please see Figure 9 , Figure 10 and Figure 11 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.

[0241] Specifically, the reinforcing part 1134 is provided with a second mounting groove 1136. Within the projection plane projected onto the axis X of the handle sleeve 11, 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 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 light can reach the light-transmitting element 15, and 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.

[0242] Please see Figure 9 , Figure 10 and Figure 11 In some embodiments, the distance between the peripheral side surface of the display screen 17 and the inner peripheral surface of the display platform 1131 is greater than or equal to 1 mm along the length direction of the brush handle 10.

[0243] Specifically, the distance between the peripheral side surface of the display screen 17 and the inner peripheral surface of the display platform 1131 can be 1mm, 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, or 10mm. If the distance between the peripheral side surface of the display screen 17 and the inner peripheral surface of the display platform 1131 is less than 1mm, the deformation of the display platform 1131 may easily affect the display screen 17 in the event of a drop of the electric toothbrush 100. A distance greater than 1mm between the peripheral side surface of the display screen 17 and the inner peripheral surface of the display platform 1131 can prevent the deformation of the display platform 1131 from affecting the display screen 17 in the event of a drop.

[0244] Please see Figure 9 , Figure 10 and Figure 11 In some embodiments, the distance between the peripheral side surface of the display screen 17 and the inner peripheral surface of the reinforcement 1134 is greater than 1 mm in the length direction of the brush handle 10.

[0245] Specifically, the distance between the peripheral side surface of the display screen 17 and the inner peripheral surface of the reinforcing part 1134 can be 1mm, 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, or 10mm. If the distance between the peripheral side surface of the display screen 17 and the inner peripheral surface of the reinforcing part 1134 is less than 1mm, the deformation of the reinforcing part 1134 may easily affect the display screen 17 in the event of a drop of the electric toothbrush 100. If the distance between the peripheral side surface of the display screen 17 and the inner peripheral surface of the reinforcing part 1134 is greater than 1mm, the deformation of the reinforcing part 1134 can be prevented from affecting the display screen 17 in the event of a drop.

[0246] Please see Figure 5 , Figure 6 and Figure 7 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.

[0247] 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, which facilitates the installation of the light-transmitting component 15. In the projection plane projected onto the axis direction X of the handle cylinder 11, 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.

[0248] Please see Figure 5 , Figure 6 and Figure 7 In some embodiments, the brush handle 10 further includes a second seal 72 disposed between the first mounting groove 1135 and the light-transmitting element 15.

[0249] Furthermore, a second seal 72 is disposed between the side of the first mounting groove 1135 and the peripheral side of the light-transmitting element 15. The second seal 72 can be made of various materials such as rubber, silicone, or polypropylene. There can be one or more second seals 72, which is not limited in this application. The second seal 72 can be separately molded and then fitted onto the display stand 1131 or the handle sleeve 11, or it can be fitted onto the display stand 1131 or the handle sleeve 11 in a form such as overmolding. The second seal 72 can seal the gap between the side of the first mounting groove 1135 and the peripheral side of the light-transmitting element 15, improving the waterproofness of the electric toothbrush 100. Moreover, the second seal 72 is low in cost and does not occupy additional installation space.

[0250] Please see Figure 5 , Figure 6 and Figure 7 In some embodiments, the second seal 72 is disposed between the bottom surface of the first mounting groove 1135 and the inner surface 152 of the light-transmitting element 15. The second seal 72 can seal the gap between the bottom surface of the first mounting groove 1135 and the inner surface 152 of the light-transmitting element 15, thereby improving the water resistance of the electric toothbrush 100. Furthermore, the second seal 72 is low in cost and does not occupy additional installation space.

[0251] Please see Figure 5 , Figure 6 and Figure 7In some embodiments, the free end 11312 of the display platform 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 housed in the second mounting groove 1136.

[0252] 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. In the projection plane projected onto the axis X of the handle cylinder 11, 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.

[0253] Please see Figure 5 , Figure 6 and Figure 7 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.

[0254] 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.

[0255] Please see Figure 5 , Figure 6 and Figure 7 In some embodiments, the distance between the peripheral side of the display screen 17 and the side of the second mounting groove 1136 is greater than or equal to 1 mm.

[0256] Specifically, the distance between the peripheral side of the display screen 17 and the side of the second mounting groove 1136 can be 1mm, 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, or 10mm. If the distance between the peripheral side of the display screen 17 and the side of the second mounting groove 1136 is less than 1mm, the deformation of the second mounting groove 1136 may easily affect the display screen 17 in the event of a drop of the electric toothbrush 100. A distance greater than 1mm between the peripheral side of the display screen 17 and the side of the second mounting groove 1136 provides additional buffer space, helping to absorb and disperse external impact forces and preventing the display screen 17 from being excessively squeezed by the side of the mounting groove when impacted, thus avoiding damage.

[0257] Please see Figure 5 , Figure 6 and Figure 7 In some embodiments, the brush handle 10 further includes a fourth buffer 54, which is disposed between the peripheral side of the display screen 17 and the side of the second mounting groove 1136.

[0258] The fourth buffer 54 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 fourth buffer 54 can return to its original shape after being subjected to force, effectively absorbing and dispersing the force. The fourth buffer 54 is located between the peripheral side of the display screen 17 and the side of the second mounting groove 1136, and can buffer the electric toothbrush 100 when subjected to external forces, dispersing and absorbing the force, reducing direct damage to the peripheral side of the display screen 17 and the side of the second mounting groove 1136.

[0259] Please see Figure 5 , Figure 6 and Figure 7 In some embodiments, the fourth buffer 54 is disposed between the second surface 175 of the display screen 17 and the bottom surface of the second mounting groove 1136.

[0260] The fourth buffer 54 is disposed between the second surface 175 of the display screen 17 and the bottom surface of the second mounting groove 1136. It can buffer the electric toothbrush 100 when it is subjected to external force, disperse and absorb the force, and reduce the direct damage of the force to the second surface 175 of the display screen 17 and the bottom surface of the second mounting groove 1136.

[0261] 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, the scope of which is defined by the claims and their equivalents.

Claims

1. A brush handle, characterized in that, include: A handle cylinder and a display section disposed on the handle cylinder, the display section including a display platform, a display screen and a light-transmitting element, the display platform protruding in a direction away from the handle cylinder; the display platform also includes an outer peripheral surface and a display surface, the outer peripheral surface being opposite to the handle cylinder and together forming a flow guide groove; the light-transmitting element is disposed on the display platform, and the flow guide groove is used to guide fluid along the display platform in a lateral direction away from the light-transmitting element; and The mechanism includes a circuit board disposed inside the handle sleeve; the display surface is the outer surface of a light-transmitting element, the orthographic projection of the display surface is a first plane, and the outer peripheral surface is the surface connecting the display surface and the handle sleeve.

2. The brush handle according to claim 1, characterized in that, The outer peripheral surface is inclined relative to the axial direction of the display surface, and the outer peripheral surface is connected to the handle cylinder and forms the guide groove.

3. The brush handle according to claim 2, characterized in that, The outer peripheral surface is inclined relative to the axial direction of the display surface, and the slope is greater than or equal to 0.

5.

4. The brush handle according to claim 2, characterized in that, The minimum height of the protrusion of the display platform relative to the handle cylinder is not less than 0.5 mm; and / or, The minimum thickness of the display stand is greater than or equal to 1 mm; and / or, The mechanism also includes a motor, which is spaced from the display screen. Along the axial direction of the display surface, the minimum distance between the motor and the display screen is greater than or equal to 3 mm; and / or, At least a portion of the display surface protrudes in a direction away from the handle cylinder; and / or, In the axial direction of the display surface, the vertical distance between the starting point of the connection between the handle and the display platform and the light-transmitting element is no greater than 5mm.

5. The brush handle according to claim 1, characterized in that, The outer peripheral surface of the display platform is provided with a first buffer; and / or, The hardness of the light-transmitting component is greater than the hardness of the display platform; and / or, The display platform is made of plastic, and the light-transmitting component is made of light-transmitting glass or light-transmitting plastic.

6. The brush handle according to claim 2, characterized in that, The drive shaft of the mechanism is used to mount the electric toothbrush head, in an axial direction perpendicular to the display surface. The minimum distance between the display unit and the bristles of the electric toothbrush head is greater than 80 mm; and / or, The handle has a first end face opposite to the electric toothbrush head, and the minimum distance between the display and the first end face is greater than or equal to 60 mm.

7. The brush handle according to claim 6, characterized in that, The handle cylinder has a second end face opposite to the first end face, and the display surface is inclined relative to the axis direction perpendicular to the display surface; In the direction from the second end face to the first end face, the distance between the display surface and the axis of the handle cylinder gradually increases; or In the direction from the second end face to the first end face, the distance between the display surface and the axis of the handle cylinder gradually decreases.

8. The brush handle according to claim 2, characterized in that, The inner wall of the display stand is provided with a first mounting groove, and the light-transmitting element is housed in the first mounting groove.

9. The brush handle according to claim 8, characterized in that, The outer peripheral surface of the display platform is connected to the second surface of the handle tube to form a connection. In the axial direction of the display surface, the distance between the connection and the end face of the free end of the display platform is greater than or equal to the depth of the first mounting groove.

10. The brush handle according to claim 1, characterized in that, The thickness of the light-transmitting element is greater than or equal to 0.3 mm; or, The thickness of the light-transmitting element is greater than or equal to 0.4 mm and less than or equal to 3.5 mm.

11. The brush handle according to claim 1, characterized in that, The display surface protrudes away from the handle cylinder to form a curved surface; or The display surface includes a first portion near the center of the light-transmitting element and a second portion surrounding the first portion, wherein the first portion is a plane and the second portion is a curved surface.

12. The brush handle according to claim 1, characterized in that, The display platform includes a connecting end and a free end. The connecting end is connected to the handle cylinder, and the free end protrudes in a direction away from the handle cylinder. The free end is provided with a mounting port, and the light-transmitting element is mounted in the mounting port; or... The light-transmitting element is connected to the free end and exposed to the outside of the display platform.

13. The brush handle according to any one of claims 1-11, characterized in that, The display screen is located inside the handle tube. The display screen and the light-transmitting element are arranged opposite to each other and form a light-emitting channel. The light-emitting channel includes a first segment and a second segment. The first segment and the second segment are arranged along the direction from the display screen to the light-transmitting element. In the direction from the display screen to the light-transmitting element, the light-transmitting area of ​​the first segment remains unchanged, while the light-transmitting area of ​​the second segment gradually increases.

14. The brush handle according to claim 13, characterized in that, On the first plane, the light-transmitting element has a first projection, and the handle cylinder has a second projection. The ratio of the area of ​​the first projection region to the area of ​​the second projection region is greater than or equal to 0.6 and less than or equal to 1.

5.

15. The brush handle according to claim 13, characterized in that, The brush handle also includes a light-shielding element made of soft rubber or foam. The light-shielding element is disposed between the display screen and the handle cylinder; or... The light-shielding element is disposed between the display screen and the movement, and the light-shielding element is at least used to block the light emitted by the display screen from being transmitted to the movement.

16. The brush handle according to claim 13, characterized in that, The display unit further includes a frame disposed within the handle sleeve. The frame is connected to the handle sleeve and / or the mechanism. The frame includes a first side and a second side facing away from each other. The first side of the frame faces the light-transmitting element and has a supporting surface for supporting the light-transmitting element. The second side of the frame faces the mechanism and is connected to the display screen. The display unit further includes a connecting unit, one end of which is connected to the movement mechanism, and the other end of which is connected to the frame; and / or, A second buffer is provided between the display screen and the frame, and the second buffer is used to buffer the force between the display screen and the frame.

17. The brush handle according to any one of claims 1-12, characterized in that, The display stand has a mounting cavity, and the display screen is housed in the mounting cavity.

18. The brush handle according to claim 17, characterized in that, The display platform and the handle cylinder are integrally formed; or... The display platform and the handle tube are formed separately, 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.

19. The brush handle according to claim 17, characterized in that, The display platform includes an extension, which has a free end. The light-transmitting element is mounted on the free end. In the axial direction of the display surface, the cross-sectional area of ​​the outer peripheral surface of the extension gradually increases.

20. The brush handle according to claim 19, characterized in that, The angle between the outer peripheral surface of the extension and the second surface of the handle cylinder is greater than or equal to 30° and less than or equal to 90°; and / or, On the first plane, the handle cylinder has a second projection, the extension has a third projection, and the distance between the area of ​​the second projection and the area of ​​the third projection is greater than 2 mm; And / or, The connection between the extension and the handle cylinder is chamfered.

21. The brush handle according to claim 17, characterized in that, The display platform and the handle cylinder are formed separately, and a first sealing element is provided between the display platform and the handle cylinder; and / or, In the axial direction of the display surface, the height of the display platform protruding relative to the handle cylinder is greater than or equal to 2.5 mm and less than or equal to 10 mm.

22. The brush handle according to claim 17, characterized in that, The brush handle is provided with a display window that extends through the display section and the handle cylinder. A light-transmitting element is disposed in the display window. The inner surface of the light-transmitting element near the display screen is spaced apart from the mechanism. The display screen is connected to the inner surface of the light-transmitting element and is electrically connected to the mechanism. The mechanism includes a main control board and a wiring section. The wiring section is disposed on the main control board and exposed through the display window. The display screen includes a connecting section that is electrically connected to the wiring section via a connecting wire.

23. The brush handle according to claim 22, characterized in that, A portion of the connecting cable is clamped between the inner wall of the display screen and the display stand; or, A third buffer is provided between the display platform and the display screen, and a portion of the connecting line is sandwiched between the buffer and the inner wall of the display platform.

24. The brush handle according to claim 17, 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.

25. The brush handle according to claim 24, characterized in that, The reinforcing part is provided with a first mating part, and the display platform is provided with a second mating part. The first mating part and the second mating part cooperate to position the reinforcing part and the display platform; and / or, The reinforcing part is a reinforcing rib integrally formed with the display platform; and / or, The reinforcing part is connected to the movement via fasteners; and / or The distance between the peripheral side surface of the display screen and the inner peripheral surface of the reinforcing part is greater than 1 mm.

26. The brush handle according to claim 24, 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; and / or, 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.

27. The brush handle according to claim 17, characterized in that, The free end of the display platform is provided with a first mounting portion, the first mounting portion having a first mounting groove, the light-transmitting element being accommodated in the first mounting groove, and the peripheral side surface of the light-transmitting element abutting against the inner wall of the first mounting groove; and / or, The free end of the display platform is further provided with a second mounting part, the second mounting part is provided with a second mounting groove, the second mounting groove is connected to the first mounting groove, the display screen is housed in the second mounting groove, 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, the inner wall of the second mounting groove includes a side side and a bottom side facing each other, and the peripheral side of the display screen is spaced apart from the side side of the second mounting groove.

28. The brush handle according to claim 27, characterized in that, The brush handle also includes a second seal and a fourth cushioning element. The second sealing element is disposed between the first mounting groove and the light-transmitting element; and / or; The fourth buffer is disposed between the display screen and the second mounting slot.

29. An electric toothbrush, characterized in that, include: The brush handle according to any one of claims 1-28, and An electric toothbrush head, which is mounted on the brush handle.

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