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 machine core. The handle barrel comprises a body part and a display part installed on the body part, the display part comprises a display table, and the display table protrudes in the direction away from the body part and forms an installation cavity. The movement is arranged in the handle cylinder. The display part further comprises a light-transmitting piece, a display screen, a light-emitting part and a display surface; the light-transmitting piece is mounted on the display table; the display screen is contained in the mounting cavity, and light emitted by the light-emitting part can sequentially penetrate through the display screen and the light-transmitting part to be emitted out of the handle barrel; the display surface is the outer surface of the light-transmitting part, and the plane where the orthographic projection of the display surface is located is a first plane. The display screen is installed in the installation cavity, the distance between the display screen and the light-transmitting piece can be reduced, a user can conveniently observe the display screen, the display screen is not prone to being blocked by the display table, on the other hand, the display screen does not need to be plugged into the handle barrel together with the machine core, the display screen can be independently installed, the body part can be arranged to be thin, and the user can conveniently hold the display screen.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of oral cleaning, and more particularly to a brush handle and an electric toothbrush. BACKGROUND

[0002] The electric toothbrush comprises a brush head and a brush handle, the brush handle comprises a handle cylinder, a core and a display screen, the core and the display screen are both mounted on the brush handle, and the handle cylinder is provided with a light-transmitting piece through which light emitted by the display screen can pass. The size of the display screen is usually inconsistent with the size of the core, and when the core and the display screen are assembled on the brush handle, the display screen will affect the assembly of the core, resulting in that the handle becomes thick and is not convenient for the user to hold. CONTENT OF THE UTILITY MODEL

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

[0004] The brush handle provided by the present application comprises a handle cylinder and a core. The handle cylinder comprises a body part and a display part mounted on the body part, the display part comprises a display table, and the display table protrudes away from the body part and forms a mounting cavity. The core is arranged in the handle cylinder. The display part further comprises a light-transmitting piece, a display screen, a light-emitting part and a display surface, the light-transmitting piece is mounted on the display table, the display screen is accommodated in the mounting cavity, light emitted by the light-emitting part can pass through the display screen and the light-transmitting piece in sequence and then be emitted to the outside of the handle cylinder, and the display surface is the outer surface of the light-transmitting piece, and the normal projection plane of the display surface is a first plane.

[0005] The display screen of the present application is mounted in the mounting cavity, which can reduce the distance between the display screen and the light-transmitting piece, is convenient for the user to observe and is not easily blocked by the display table. On the other hand, the display screen can be separately mounted without being inserted into the handle cylinder together with the core, the body part can be arranged to be thinner, and it is convenient for the user to hold.

[0006] In some embodiments, the display table and the body part are integrally formed, which can prevent the display table and the body part from being separated during the operation of the electric toothbrush, thereby ensuring the stability and reliability of the operation of the electric toothbrush.

[0007] In some embodiments, the display table and the body part are separately formed, and the display table and the body part and / or the core are connected by at least one of screw connection, thread connection, adhesion and welding. The display table and the body part are separately formed, which is convenient for disassembly and replacement.

[0008] In some embodiments, the display platform is formed separately from the body portion, and a first seal is arranged between the display platform and the body portion. The first seal can seal the gap between the outer circumferential surface of the display platform and the body portion, prevent fluid from flowing into the body portion from the gap, and improve the waterproof performance of the electric toothbrush. In addition, the first seal has low cost and does not occupy additional installation space.

[0009] In some embodiments, the height of the display platform protruding relative to the body portion in the axial direction of the display surface is greater than or equal to 0.5 mm and less than or equal to 10 mm, which can provide sufficient installation space for the display screen and make the structure of the brush handle compact. In addition, the display platform is less likely to land first when the electric toothbrush falls, thereby reducing the risk of damage to the electric toothbrush caused by accidental falling or impact.

[0010] In some embodiments, the display surface is projected on the first plane as a first area, the body portion is projected on the first plane as a second area, and the first area is located outside the second area. In this way, the design size of the light-transmitting member and the display screen can be increased, and the user can more easily observe the display content of the display screen through the light-transmitting member.

[0011] In some embodiments, the display platform includes an extension portion, the extension portion includes an open end, and the light-transmitting member is mounted on the open end. In addition, the cross-sectional area of the outer circumferential surface of the extension portion gradually increases in the axial direction of the display surface, which can expand the exit angle of light and make the light uniformly distributed on the surface of the light-transmitting member, thereby avoiding local over-brightness or over-darkness on the surface of the light-transmitting member and improving the display effect of the display screen.

[0012] In some embodiments, the angle between the outer circumferential surface of the extension portion and the axial direction of the display surface is greater than or equal to 0° and less than or equal to 60°, which can make the fluid more easily flow along the flow guide groove and less likely to accumulate on the surface of the light-transmitting member after flowing from the outer circumferential surface of the body portion to the outer circumferential surface of the extension portion. In this way, the possibility of fluid accumulation on the surface of the light-transmitting member can be reduced, which helps to maintain the clarity of the light-transmitting member and ensures that the user can clearly see the content of the display screen through the light-transmitting member.

[0013] In some embodiments, the minimum distance between the outer contour of the projection of the display screen on the first plane and the outer contour of the projection of the light-transmitting member on the first plane is greater than or equal to 2 mm.

[0014] In some embodiments, the connection between the extension portion and the body portion is chamfered. This can increase the distance of fluid flowing from the body portion to the light-transmitting member and make the fluid less likely to flow to the surface of the light-transmitting member.

[0015] In some embodiments, the display platform includes an outer circumferential surface protruding relative to the body portion, the body portion includes an outer circumferential surface, the outer circumferential surface of the display platform is connected opposite to the outer circumferential surface of the body portion and encloses the flow guide groove, the outer circumferential surface of the display platform is inclined relative to the axis direction of the display surface, and the slope is greater than or equal to 0.5, so that fluid is not easily flowed from the outer circumferential surface of the body portion to the outer circumferential surface of the display platform and then to the outer surface of the light-transmitting piece, thereby ensuring the light transmission effect of the light-transmitting piece.

[0016] In some embodiments, the display platform includes a connecting end and an open end, the connecting end is connected to the body portion, and the open end protrudes away from the body portion, thereby providing a space for mounting the light-transmitting piece.

[0017] The light-transmitting piece is arranged in the display platform from the open end, and the open end can absorb part of the impact force to protect the light-transmitting piece and prevent the light-transmitting piece from being broken due to external impact force.

[0018] In some embodiments, the light-transmitting piece is sealingly connected to the open end and exposed to the outside of the display platform, so that the light-transmitting piece is more easily mounted and dismounted.

[0019] In some embodiments, the outer surface and / or the inner surface of the light-transmitting piece is provided with a light-shielding layer, the light-shielding layer includes opposite inner and outer rings, the outer ring is farther away from the center of the light-transmitting piece than the inner ring in the circumferential direction of the light-transmitting piece, and the light-shielding layer covers at least a region of the light-transmitting piece corresponding to a region between the circumferential surface of the display screen and the inner wall of the display platform. The light-shielding layer is arranged between the display screen and the body portion, can absorb and block light transmission from the display screen to the inside of the body portion, avoid light transmission and scattering in the inside of the body portion, reduce reflection and glare, ensure the brightness and clarity of the display screen, help users observe the display information, and also avoid the influence of light on the elements in the inside of the body portion.

[0020] In some embodiments, in a projection plane projected in the axis direction of the brush handle, the light-transmitting piece includes a first part opposite to the display screen and a second part surrounding the first part, the display screen includes opposite first and second surfaces, the first surface is closer to the light-transmitting piece than the second surface, and the height of the inner surface of the second part protruding relative to the handle cylinder is not greater than the height of the display screen protruding relative to the handle cylinder. The first part is used for directly transmitting light to ensure that the display information is clearly visible. The height of the inner surface of the second part protruding relative to the handle cylinder is not greater than the height of the first surface protruding relative to the handle cylinder, so that the display content of the display screen is not easily blocked by the display platform, and users can see the display content of the display screen through the second part.

[0021] In some embodiments, the display surface is curved, and the outer surface is convex in a direction away from the body portion to form a curved surface, that is, at least part of the outer surface of the light-transmitting member is in an arched structure, which has good pressure-bearing performance, thus reducing the risk of breakage of the light-transmitting member due to falling.

[0022] In some embodiments, the display surface includes a first part near the center of the light-transmitting member and a second part surrounding the first part, the first part is planar, and the second part is curved, the first part being planar can reduce loss caused by light refraction, and the second part being curved helps guide the fluid to flow out of the display portion in a direction away from the light-transmitting member, avoiding the fluid from gathering on the light-transmitting member.

[0023] In some embodiments, the display surface includes a first part near the center of the light-transmitting member and a second part surrounding the first part, the first part is planar, and the second part is formed as a continuous curved surface with the outer wall of the open end of the display stand, the continuous curved surface is convex in a direction away from the body portion, and there is no obvious edge or boundary in the continuous curved surface, which is not easy to hide dirt.

[0024] In some embodiments, the handle cylinder is provided with a display window, the display window penetrates the display portion and the body portion, the light-transmitting member is arranged in the display window, the inner surface of the light-transmitting member near the display screen is spaced apart from the movement, the display screen is connected with the inner surface of the light-transmitting member and is electrically connected with the movement, the spacing between the movement and the display screen can avoid the vibration of the movement during operation from interfering with the light, ensuring the clarity and stability of the display effect. The display screen is connected with the inner surface of the light-transmitting member, which can shorten the distance between the display screen and the light-transmitting member, ensure clear display of the display content, and facilitate the user to observe the display content of the display screen.

[0025] In some embodiments, the movement includes a main control board and a wiring portion, the wiring portion is arranged on the main control board and exposed to the display window, and the display screen includes a connecting portion, the connecting portion is electrically connected with the wiring portion through a connecting line. The display screen is connected with the inner surface of the light-transmitting member, which can shorten the distance between the display screen and the light-transmitting member, ensure clear display of the display content, and facilitate the user to observe the display content of the display screen.

[0026] In some embodiments, the display portion further includes a reinforcing portion arranged on the display stand, the reinforcing portion is at least attached to at least part of the inner wall of the display stand, and the reinforcing portion is connected with the display stand and / or the body portion. The reinforcing portion is connected with the display stand, which can avoid deformation of the display stand caused by external pressure or impact, thus ensuring the installation stability between the display screen and the light-transmitting member and maintaining the correct alignment of the display screen.

[0027] The application further provides an electric toothbrush, which comprises the brush handle and the electric toothbrush head according to any one of the above-mentioned embodiments. The electric toothbrush head is installed on the brush handle. The display screen of the electric toothbrush of the application is installed in the installation cavity, so that the distance between the display screen and the light-transmitting member can be reduced, the user can easily observe, the display screen is not easily blocked by the display platform, on the other hand, the display screen can be installed separately without being inserted into the handle cylinder together with the core, the body part can be set thinner, and the user can hold more easily.

[0028] Additional aspects and advantages of the embodiments of the application will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0029] The above and / or additional aspects and advantages of the application will become apparent and be readily appreciated from the following description, including the appended drawings, wherein:

[0030] Figure 1 is a perspective assembly view of an electric toothbrush according to some embodiments of the application;

[0031] Figure 2 is a perspective assembly view of an electric toothbrush according to some embodiments of the application; Figure 1

[0032] Figure 3 is a cross-sectional view of the electric toothbrush shown in FIG. 7; Figure 1

[0033] Figure 4 is a cross-sectional view of the electric toothbrush shown in FIG. 7; Figure 3

[0034] Figure 5 is a perspective assembly view of an electric toothbrush according to some embodiments of the application;

[0035] Figure 6 is a perspective assembly view of an electric toothbrush according to some embodiments of the application; Figure 5

[0036] Figure 7 is a cross-sectional view of the electric toothbrush shown in FIG. 7; Figure 5

[0037] Figure 8 is a cross-sectional view of the electric toothbrush shown in FIG. 7; Figure 7

[0038] Main element symbol explanation:

[0039] ​​​​​​The electric toothbrush 100, the handle 10, the handle barrel 11, the body part 111, the display part 113, the display platform 1131, the connecting end 11311, the open end 11312, the mounting cavity 11313, the extension part 11315, the first mounting part 11317, the second mounting part 11318, the reinforcing part 1134, the first matching part 11341, the first mounting groove 1135, the second mounting groove 1136, the flow guide groove 115, the display window 119, the core 13, the motor 131, the output shaft 133, the main control board 135, the wiring part 137, the light-transmitting piece 15, the display surface 151, the first part 1511, the second part 1513, the inner surface 152, the display screen 17, the connecting part 171, the first surface 173, the second surface 175, the first end 101, the second end 102, the electric toothbrush head 30, the bristles 31, the rod body 33, the first buffer 51, the third buffer 53, the fourth buffer 54, the first sealing piece 71, the second sealing piece 72, the light-blocking layer 80, the inner ring 81, the outer ring 83, the axial direction A, the axial direction X. DETAILED DESCRIPTION

[0040] Embodiments of the present application are described below in detail with reference to the accompanying drawings. The embodiments described below are examples for explaining the embodiments of the present application, and should not be understood as limiting the embodiments of the present application.

[0041] In the description of the present application, it should be understood that the terms "thickness", "upper", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0042] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood in a broad sense, and in one example, it can be fixedly connected, or detachably connected, or integrally connected; it can be mechanically connected, or electrically connected, or it can communicate with each other; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication or interaction relationship of two elements.

[0043] In the embodiments of the present application, the first feature is "on" or "under" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature is "on", "above" and "over" the second feature includes that the first feature is directly above and obliquely above the second feature, or only means that the first feature is higher in horizontal height than the second feature. The first feature is "under", "below" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or only means that the first feature is lower in horizontal height than the second feature.

[0044] Please refer to Figure 1 and Figure 2 , or Figure 5 and Figure 6 , the present application provides an electric toothbrush 100, the electric toothbrush 100 includes a brush handle 10 and an electric toothbrush head 30, the electric toothbrush head 30 is installed on the brush handle 10.

[0045] The electric toothbrush 100 is a device for cleaning the oral cavity. The electric toothbrush 100 of the embodiments of the present application includes an electric toothbrush head 30 and a brush handle 10, and the electric toothbrush head 30 is installed on the brush handle 10. Since the electric toothbrush 100 of the embodiments includes the brush handle 10, it can be understood that the electric toothbrush 100 at least includes the same beneficial effects as the brush handle 10, and therefore the beneficial effects of the electric toothbrush 100 please refer to the beneficial effects of the brush handle 10 described below. The brush handle 10 of the electric toothbrush 100 can drive the electric toothbrush head 30 to vibrate at a high frequency to vibrate and clean the teeth.

[0046] The electric toothbrush 100 includes but is not limited to a sonic toothbrush, an ultrasonic toothbrush, a plug-in power toothbrush, a battery-driven electric toothbrush, etc. The electric toothbrush head 30 includes bristles 31 and a rod body 33. The bristles 31 are used to clean the teeth. The material of the bristles 31 can be but is not limited to nylon, rubber or pig bristles, etc. Preferably, the bristles 31 can have good toughness and elasticity, so as to better clean the teeth and the interdental spaces. The brush handle 10 includes a core 13, the core 13 is provided with a motor 131, one end of the rod body 33 is detachably connected with an output shaft 133 of the motor 131, the other end is provided with the bristles 31, and the rod body 33 is substantially in a strip shape, so as to facilitate the rod body 33 to extend into the oral cavity, so that the bristles 31 can touch each part of the oral cavity that needs to be cleaned, thereby ensuring the cleaning effect of the electric toothbrush 100. Under the condition that the motor 131 of the electric toothbrush 100 operates stably, the rod body 33 can transmit the vibration of the motor 131 to the bristles 31, and the bristles 31 can clean the parts of the oral cavity that need to be cleaned in the process of vibration. The parts of the oral cavity that need to be cleaned can include the tooth surface, the interdental spaces and the gums, etc.

[0047] Please refer to Figures 1 to 3 , or Figures 5 to 7 In some embodiments, the handle 10 comprises a handle barrel 11 and a core 13. The handle barrel 11 comprises a body portion 111 and a display portion 113 mounted on the body portion 111. The display portion 113 comprises a display platform 1131 which protrudes away from the body portion 111 and forms a mounting cavity 11313. The core 13 is arranged in the handle barrel 11. The display portion 113 further comprises a light-transmitting piece 15, a display screen 17, a light-emitting portion and a display surface 151. The light-transmitting piece 15 is mounted on the display platform 1131. The display screen 17 is accommodated in the mounting cavity 11313, the light-emitting portion is composed of light-emitting diodes, and the light emitted by the light-emitting portion can sequentially pass through the display screen 17 and the light-transmitting piece 15 and exit to the outside of the handle barrel 11. The display surface 151 is an outer surface of the light-transmitting piece 15, and the plane in which the orthographic projection of the display surface 151 lies is a first plane.

[0048] The handle 10 is a structure for a user to hold so as to operate and use various functions of the electric toothbrush 100. The handle 10 is usually in a cylindrical structure so as to make the user feel comfortable when holding. The handle 10 can comprise an anti-slip structure to avoid the electric toothbrush 100 from slipping off the hand during use.

[0049] The handle barrel 11 is a structure for accommodating other elements of the electric toothbrush 100, and the handle barrel 11 can protect the other elements and has a certain degree of waterproof performance to avoid external fluids from flowing into the inside of the handle barrel 11. The other elements include but are not limited to the core 13 and the light-transmitting piece 15. The cross-sectional shape of the handle barrel 11 can be but is not limited to a circle, an ellipse, a rectangle or other polygons. The material of the handle barrel 11 can be plastic or metal. When the material of the handle barrel 11 is plastic, the handle barrel 11 has good insulation performance, low cost and light weight. When the material of the handle barrel 11 is metal, the handle barrel 11 has high strength, good wear resistance and long service life.

[0050] The display part 113 is mounted to the body part 111. In some embodiments, the body part 111 and the display part 113 are integrated, i.e. the body part 111 and the display part 113 are one whole structure, thereby improving the bonding strength between the body part 111 and the display part 113, preventing the body part 111 and the display part 113 from separating during the operation of the brush handle 10, and thus ensuring the stability and reliability of the operation of the brush handle 10. In other embodiments, the body part 111 and the display part 113 are separate structures, i.e. the body part 111 and the display part 113 are two different structures. In one example, the body part 111 and the display part 113 can be combined together by a detachable connection, including but not limited to a buckle connection or a threaded connection, etc. In another example, the body part 111 and the display part 113 can be combined together by a non-detachable connection, including but not limited to bonding or welding, etc.

[0051] The display platform 1131 protrudes away from the body part 111, thereby forming a mounting cavity 11313 which is in communication with the space inside the body part 111. On the one hand, the mounting cavity 11313 provides a containing space for the display screen 17, reducing the interference of the external environment on the display screen 17. On the other hand, the display screen 17 is installed in the mounting cavity 11313, which is less likely to be blocked by the display platform 1131 compared to the display screen 17 being arranged in the space inside the body part 111, and can reduce the distance between the display screen 17 and the light-transmitting piece 15, facilitating the user to observe. On the other hand, the movement core 13 is contained in the space inside the body part 111, and the display screen 17 is contained in the mounting cavity 11313, so that the display screen 17 does not occupy the space inside the body part 111, thereby reducing the size of the body part 111 and facilitating the user to hold. On the other hand, when the electric toothbrush 100 is in operation, the movement core 13 and the display screen 17 are contained in different spaces and maintain a certain distance, which can avoid the display information being blurred due to the vibration of the movement core 13, and can also avoid the display screen 17 being displaced due to the vibration, thereby improving the service life of the display screen 17.

[0052] The movement core 13 is a structure for driving the vibration of the electric toothbrush head 30. After the user starts the electric toothbrush 100, the output shaft 133 of the motor 131 in the movement core 13 will start to vibrate, and drive the brush head 31 to vibrate through the part connected to the brush head 31, so as to clean the teeth through the bristles 31 of the vibrating brush head 31. At this time, the user usually needs to obtain the information of the brush head 31 and the human features near the oral cavity, so as to locate the tooth area being brushed.

[0053] The light-transmitting member 15 is arranged opposite to the display screen 17. The light-transmitting member 15 can be made of glass, plastic, crystal or other materials. The light-transmitting member 15 can serve as a barrier between the external environment and the inside of the handle barrel 11, preventing dust, fluid or other contaminants from entering the inside of the handle barrel 11 and protecting the display screen 17 from contamination. The light-transmitting member 15 can also have certain optical properties. When the electric toothbrush 100 is in operation, the light emitted by the light-emitting part can pass through the display screen 17 and the light-transmitting member 15 and exit to the outside of the handle barrel 11, where it can be received by the human eye. The light-transmitting member 15 can be one or multiple. In the embodiment of the present application, the light-transmitting member 15 is one. In the embodiment in which the light-transmitting member 15 is multiple, the multiple light-transmitting members 15 can have different or identical sizes, shapes or transmittances. Further, the light-transmitting member 15 can be coated with a coating layer having different optical properties, such as an anti-reflection coating layer for improving light transmittance, a light-filtering coating layer for filtering light of specific wavelengths, a fog-proof coating layer for preventing fogging, etc. The first plane is the plane on which the orthographic projection of the display surface 151 lies. The orthographic projection refers to the projection of parallel rays perpendicular to the projection plane.

[0054] The light-emitting part is configured to emit light. The light can pass through the display screen 17 and the light-transmitting member 15 and exit to the outside of the handle barrel 11, thereby providing the display information required by the user. The light-emitting part can be connected to the display screen 17 or not. In the present application, the light-emitting part is fixedly connected to the display screen 17, which helps the light emitted by the light-emitting part to pass through the display screen 17. That is, the light-emitting part can form display information in different colors and brightness combinations and display the information on the display screen. The display information carried by the light passing through the display screen 17 includes but is not limited to the time of brushing, the remaining time of brushing, the number of detected dental plaque and the remaining power, etc. The display information helps the user to keep track of the brushing in real time, thereby promoting the user's oral health management.

[0055] The display screen 17 of the present application is arranged in the mounting cavity 11313, which can reduce the distance between the display screen 17 and the light-transmitting member 15, facilitate the user's observation and prevent the display screen 17 from being blocked by the display platform 1131. On the other hand, the display screen 17 does not need to be inserted into the handle barrel 11 together with the core 13. The display screen 17 can be separately installed, and the main body part 111 can be made thinner, facilitating the user's holding.

[0056] Please refer to Figure 2 , Figure 3 and Figure 4 , or Figure 6 , Figure 7 and Figure 8In some embodiments, the display platform 1131 is integrally formed with the body portion 111. That is, the display platform 1131 and the body portion 111 are in one integral structure, thereby improving the bonding strength between the display platform 1131 and the body portion 111, preventing the display platform 1131 and the body portion 111 from being separated during the operation of the electric toothbrush 100, and thus ensuring the stability and reliability of the electric toothbrush 100.

[0057] In other embodiments, the display platform 1131 is separately formed with the body portion 111, that is, the display platform 1131 and the body portion 111 are two different structures. In one example, the display platform 1131 and the body portion 111 and / or the core 13 can be combined together by a detachable connection mode, including but not limited to screw connection, buckle connection, or threaded connection, etc. In another example, the display platform 1131 and the body portion 111 and / or the core 13 can be combined together by a non-detachable connection mode, including but not limited to adhesion or welding, etc. The separate formation is convenient to disassemble and is conducive to the replacement of the display platform 1131 and the body portion 111.

[0058] Please refer to Figure 2 , Figure 3 and Figure 4 , or Figure 6 , Figure 7 and Figure 8 In some embodiments, the display platform 1131 is separately formed with the body portion 111, and a first sealing member 71 is arranged between the display platform 1131 and the body portion 111.

[0059] The first sealing member 71 can be made of rubber, silicone, polypropylene, or other materials. The first sealing member 71 can be one or multiple, which is not limited in the present application. The first sealing member 71 can be separately formed and then sleeved on the display platform 1131 or the body portion 111, or can be sleeved and formed on the display platform 1131 or the body portion 111 in the form of encapsulation. The first sealing member 71 can seal the gap between the outer circumferential surface of the display platform 1131 and the body portion 111, prevent fluid from flowing into the body portion 111 through the gap, and improve the waterproof performance of the electric toothbrush 100. Moreover, the first sealing member 71 has low cost and does not occupy additional installation space.

[0060] Please refer to Figure 2 , Figure 3 and Figure 4 , or Figure 6 , Figure 7 and Figure 8In some embodiments, the display platform 1131 protrudes from the body portion 111 by a height greater than or equal to 0.5 mm and less than or equal to 10 mm in the axial direction A of the display surface 151. Specifically, the display platform 1131 can protrude from the body portion 111 by a height of 2.5 mm, 2.8 mm, 3.5 mm, 4 mm, 5.5 mm, 6 mm, 6.5 mm, 7 mm, 8.5 mm, 10 mm, or any value between any two of the values.

[0061] If the display platform 1131 protrudes from the body portion 111 by a height less than 0.5 mm, the depth of the mounting cavity 11313 is limited, which makes the mounting space (i.e., the mounting cavity 11313) of the display screen 17 limited and is not conducive to the installation of the display screen 17. If the display platform 1131 protrudes from the body portion 111 by a height greater than 10 mm, the display platform 1131 is too far from the body portion 111, and the display platform 1131 is likely to touch the ground first when the electric toothbrush 100 falls, which can cause the display platform 1131 to be damaged. In addition, the display platform 1131 being too far from the body portion 111 can cause the center of gravity of the electric toothbrush 100 to deviate too much from the axial direction X of the brush handle 10, which can affect the stability of the electric toothbrush 100 when placed.

[0062] The display platform 1131 protruding from the body portion 111 by a height greater than or equal to 0.5 mm and less than or equal to 10 mm can provide sufficient mounting space for the display screen 17 and make the brush handle 10 compact. In addition, the display platform 1131 is less likely to touch the ground first when the electric toothbrush 100 falls, which can reduce the risk of damage to the electric toothbrush 100 caused by accidental falling or impact.

[0063] Please refer to Figure 2 , Figure 3 and Figure 4 , or Figure 6 , Figure 7 and Figure 8 In some embodiments, the display platform 1131 projects onto the first plane as a first area, and the body portion 111 projects onto the first plane as a second area. The first area is located outside the second area.

[0064] The first area being located outside the second area means that the size of the outer contour of the projection of the display platform 1131 onto the first plane is greater than the size of the outer contour of the projection of the body portion 111 onto the first plane. The first plane is parallel to the axial direction X of the brush handle 10 and perpendicular to the axial direction of the display surface 151. Thus, compared to the first area being located inside the second area, the size of the display platform 1131 is larger, which can increase the design size of the light-transmitting member 15 and the display screen 17, and thus can facilitate the user to observe the display content of the display screen 17 through the light-transmitting member 17.

[0065] In addition, in some embodiments, the extending direction of the bristles 31 is substantially the same as the axial direction A of the display surface 151, so that when the electric toothbrush 100 is placed on a structure having a resting surface such as a table, and the outer circumferential surface of the body 111 and the outer circumferential surface of the display stand 1131 are both in contact with the resting surface, the extending direction of the bristles 31 has a certain angle with the plane on which the resting surface is located, that is, when the electric toothbrush 100 is placed on a structure having a resting surface such as a table, the bristles 31 will not be in contact with the resting surface, so that the bristles 31 can be prevented from being contaminated.

[0066] Please refer to Figure 2 , Figure 3 and Figure 4 , or Figure 6 , Figure 7 and Figure 8 , in some embodiments, the display stand 1131 includes an extension 11315, the extension 11315 includes an open end 11312, the light-transmitting piece 15 is installed on the open end 11312, and the cross-sectional area of the outer circumferential surface of the extension 11315 gradually increases in the axial direction A of the display surface 151.

[0067] Specifically, the extension 11315 is a part of the display stand 1131 extending away from the body part 111 from the connection, and the shape of the cross section of the extension 11315 includes but is not limited to a circle, an ellipse or a polygon, etc. The material of the extension 11315 includes but is not limited to plastic, silica gel or metal, etc. In the case that the material of the extension 11315 is plastic, the extension 11315 is relatively light in weight, low in cost, and easy to process. In the case that the material of the extension 11315 is silica gel, the extension 11315 is relatively soft, good in elasticity, and will not harm the oral tissues. In the case that the material of the extension 11315 is metal, the extension 11315 is relatively high in strength, long in service life, and easy to clean and maintain. The extension 11315 can provide sufficient mounting space for the light-transmitting piece 15, and in the case that the display screen 17 is installed on the display part 113, the extension 11315 can provide sufficient mounting space for the light-transmitting piece 15 and the display screen 17. The open end 11312 is located at one end of the extension 11315 away from the body part 111, and is used to install the light-transmitting piece 15. Light can propagate from the open end 11312 to the outside of the handle barrel 11. The cross-sectional shape of the open end 11312 includes but is not limited to a circle, an ellipse or a polygon, etc. It can be understood that the cross-sectional shape of the open end 11312 matches the cross-sectional shape of the light-transmitting piece 15, so that the open end 11312 and the light-transmitting piece 15 can be tightly fitted to prevent external dust or moisture from entering the display stand 1131.

[0068] The cross-sectional area of the outer circumferential surface of the extension portion 11315 gradually increases, which can expand the exit angle of the light rays, so that the light rays can be uniformly distributed on the display surface 151, avoiding local over-brightness or over-darkness of the display surface 151, and improving the display effect of the display screen 17. On the other hand, the cross-sectional area of the extension portion 11315 gradually increases, so that the extension portion 11315 has a certain inclination angle relative to the body portion 111, thereby forming a barrier on the fluid flow path, guiding the fluid to flow in the flow guide groove 115, avoiding the fluid flowing directly from the outer circumferential surface of the extension portion 11315 to the light-transmitting piece 15, and further ensuring the clarity of the light-transmitting piece 15, so that the user can clearly see the display content of the display screen 17 through the light-transmitting piece 15.

[0069] Please refer to Figure 2 , Figure 3 and Figure 4 , or Figure 6 , Figure 7 and Figure 8 In some embodiments, the angle between the outer circumferential surface of the extension portion 11315 and the axis direction A of the display surface is greater than or equal to 0° and less than or equal to 60°.

[0070] Specifically, the angle between the outer circumferential surface of the extension portion 11315 and the axis direction A of the display surface refers to the angle formed at the intersection between the outer circumferential surface of the extension portion 11315 and the outer circumferential surface of the body portion 111, i.e., the relative inclination between the extension portion 11315 and the body portion 111. The angle between the extension portion 11315 and the body portion 111 can be any one value or any value between any two values of 0°, 35°, 40°, 43°, 34°, 37°, 47°, 48°, 54° or 60°.

[0071] If the angle between the outer circumferential surface of the extension portion 11315 and the axis direction A of the display surface is less than 0°, the distance between the outer circumferential surface of the extension portion 11315 and the outer circumferential surface of the body portion 111 is too close, the capacity and depth of the flow guide groove 115 are limited, and the water flow is difficult to flow along the flow guide groove 115. In addition, too small angle will also cause the distance between the light-transmitting piece 15 and the body portion 111 to be too close, and the fluid is easy to splash on the display surface 151, affecting the display effect. If the angle between the outer circumferential surface of the extension portion 11315 and the axis direction A of the display surface is greater than 60°, the connection between the outer circumferential surface of the extension portion 11315 and the outer circumferential surface of the body portion 111 will be too gentle, and the fluid will be easy to accumulate on the display surface 151 after flowing from the outer circumferential surface of the body portion 111 to the outer circumferential surface of the extension portion 11315, resulting in water stains on the display surface 151 and affecting the visibility of the display content of the display screen 17.

[0072] The angle between the outer circumferential surface of the extension 11315 and the axial direction A of the display surface is greater than or equal to 0° and less than or equal to 60°, and the fluid is more likely to flow along the flow guide groove 115, and the fluid is not likely to accumulate on the display surface 151 from the outer circumferential surface of the body portion 111 to the outer circumferential surface of the extension 11315. Therefore, the possibility of fluid accumulation on the surface of the light-transmitting piece 15 can be reduced, the clarity of the light-transmitting piece 15 can be maintained, and the user can clearly see the content of the display screen 17 through the light-transmitting piece 15.

[0073] Please refer to Figure 2 , Figure 3 and Figure 4 , or Figure 6 , Figure 7 and Figure 8 , in some embodiments, the distance between the outer contour of the projection of the extension 11315 on the first plane and the outer contour of the projection of the body portion 111 on the first plane is greater than 2 mm, the projection plane is parallel to the axial direction X of the brush handle 10, and perpendicular to the axial direction A of the display surface 151. Specifically, the distance between the outer contour of the projection of the extension 11315 on the first plane and the outer contour of the projection of the body portion 111 on the first plane can be 2 mm, 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, 11 mm, or 12 mm, or any value greater than 2 mm or any value between any two values greater than 2 mm.

[0074] If the distance between the outer contour of the projection of the extension 11315 on the first plane and the outer contour of the projection of the body portion 111 on the first plane is less than 2 mm, the fluid is too close from the body portion 111 to the light-transmitting piece 15, and the fluid is likely to flow to the surface of the light-transmitting piece 15. The distance between the outer contour of the projection of the extension 11315 and the outer contour of the projection of the body portion 111 is greater than 2 mm, which can increase the distance from the body portion 111 to the light-transmitting piece 15, and the fluid is not likely to flow to the surface of the light-transmitting piece 15.

[0075] Please refer to Figure 2 , Figure 3 and Figure 4 , or Figure 6 , Figure 7 and Figure 8 , in some embodiments, the connection between the extension 11315 and the body portion 111 is chamfered. The chamfered connection between the extension 11315 and the body portion 111 can provide a smooth transition, avoid the formation of dead corners, prevent dirt accumulation, and facilitate cleaning.

[0076] Please refer to Figure 2 and Figure 3 , or Figure 6 and Figure 7In some embodiments, the display platform 1131 includes an outer circumferential surface protruding relative to the body portion 111, the body portion 111 includes an outer circumferential surface, the outer circumferential surface of the display platform 1131 is connected opposite to the outer circumferential surface of the body portion 111 and encloses the flow guide groove 115, the outer circumferential surface of the display platform 1131 is inclined relative to the axial direction A of the display surface, and the slope is greater than or equal to 0.5. It should be noted that in some embodiments, the slope can be 0.5, 0.55, 0.61, 0.67, 0.71, 0.75, 0.84, 0.85, 0.91, 0.98, etc. Any value greater than or equal to 0.5 or any value between any two values greater than or equal to 0.5.

[0077] If the slope is less than 0.5, after the fluid flows into the flow guide groove 115, the inclined angle of the part of the display platform 1131 close to the electric toothbrush head 30 relative to the body portion 111 is small, that is, the part of the display platform 1131 close to the electric toothbrush head 30 has small resistance to the fluid in the fluid flow process, the fluid is easy to flow from the outer circumferential surface of the body portion 111 to the outer circumferential surface of the display platform 1131 and to the display surface 151. In some embodiments of the present application, the slope is greater than or equal to 0.5, after the fluid flows into the flow guide groove 115, the inclined angle of the part of the display platform 1131 close to the electric toothbrush head 30 relative to the body portion 111 is large, that is, the part of the display platform 1131 close to the electric toothbrush head 30 has large resistance to the fluid in the fluid flow process, the fluid is not easy to flow to the display surface 151, and the light transmission member 15 is guaranteed to have a good light transmission effect on the light transmitted from the light emitting portion to the display screen 17.

[0078] Please refer to Figure 2 and Figure 3 , or Figure 6 and Figure 7 In some embodiments, the height of the display platform 1131 protruding relative to the body portion 111 in the axial direction A of the display surface 151 is not less than 0.5 mm. At least part of the display platform 1131 protruding relative to the body portion 111 and the body portion 111 together form the flow guide groove 115 in the axial direction A of the display surface 151

[0079] Specifically, the height of the display platform 1131 protruding relative to the body portion 111 can be 0.5 mm, 1.55 mm, 1.61 mm, 2.67 mm, 2.71 mm, 3.75 mm, 3.84 mm, 3.85 mm, 4.91 mm or 4.98 mm. It can be understood that the depth of the flow guide groove 115 is associated with the height of the portion of the display platform 1131 protruding relative to the body portion 111. Therefore, if the height of the display platform 1131 protruding relative to the body portion 111 is less than 0.5 mm, the height difference between the display platform 1131 and the body portion 111 is small, and fluid is easily transferred from the body portion 111 to the display platform 1131. If the height of the display platform 1131 protruding relative to the body portion 111 is not less than 0.5 mm, the depth of the flow guide groove 115 has an appropriate depth, and fluid is not easily transferred from the body portion 111 to the display platform 1131.

[0080] Referring to Figure 2 and Figure 3 , or Figure 6 and Figure 7 In some embodiments, the thickness of the display platform 1131 is greater than or equal to 1 mm.

[0081] Specifically, the thickness of the display platform 1131 can be 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 greater than or equal to 1 mm or any value between any two values greater than or equal to 1 mm. Since the display platform 1131 protrudes relative to the body portion 111, the display platform 1131 is easily in contact with the ground when the electric toothbrush 100 falls. If the thickness of the display platform 1131 is less than 1 mm, the structural strength of the display platform 1131 is small, and the display platform 1131 is easily structurally damaged under external force. In some embodiments of the present application, the thickness of the display platform 1131 is greater than 1 mm, which can ensure that the display platform 1131 has a certain structural strength, and the display platform 1131 is difficult to be structurally damaged under external force.

[0082] Referring to Figure 2 or Figure 6 In some embodiments, the outer periphery of the display platform 1131 is provided with a first buffer 51.

[0083] Specifically, the first buffer 51 can use a soft and elastic material, such as silica gel, rubber, or polyvinyl chloride, etc. Rubber includes but is not limited to natural rubber, nitrile rubber, fluororubber, polyurethane rubber, ethylene propylene diene rubber, or silicone rubber, etc. The first buffer 51 can restore to its original shape after being subjected to a force, effectively absorbing and dispersing the force. The first buffer 51 is arranged on the outer circumferential surface of the display table 1131, which not only plays a buffering role in the case that the display table 1131 is subjected to external force, disperses and absorbs the force, and reduces the possibility of damage to the display table 1131, but also reduces the force transmitted to the body part 111, protecting the body part 111 from structural damage.

[0084] Referring to Figure 2 and Figure 3 , Figure 6 and Figure 7 , in some embodiments, the inner wall of the display table 1131 is provided with a first mounting groove 1135, and the light-transmitting piece 15 is accommodated in the first mounting groove 1135.

[0085] Specifically, the inner wall of the display table 1131 is provided with a first mounting groove 1135, which can be rectangular, circular, or other shapes in the projection plane projected toward the axis direction X of the brush handle 10. Preferably, the shape and size of the first mounting groove 1135 match the outer contour of the light-transmitting piece 15, thereby further improving the fixation and support of the first mounting groove 1135 to the light-transmitting piece 15. The first mounting groove 1135 can provide support for the light-transmitting piece 15, thereby ensuring the secure installation of the light-transmitting piece 15 and the close fit with the inner wall of the display table 1131, making the light-transmitting piece 15 less likely to shift, avoiding displacement or loosening, and further ensuring that light can effectively pass through the light-transmitting piece 15, improving the light transmission performance of the display table 1131. The first mounting groove 1135 also has a positioning effect, facilitating the installation of the light-transmitting piece 15.

[0086] The thickness of the light-transmitting piece 15 is not greater than the distance between the display surface 151 and the inner circumferential surface of the body part 111, and the thickness of the light-transmitting piece 15 is greater than or equal to 0.3 mm, which on the one hand can ensure that the light-transmitting piece 15 has sufficient structural strength and is not easily broken under external force, and on the other hand can ensure that the display screen 17 is at a moderate distance from the display surface 151, ensuring that the display content of the display screen 17 is not blocked by the inner wall of the display table 1131, the user's viewing angle when observing the display screen 17 is large, and the distance between the display content of the display screen 17 and the user's eyes is moderate, making it easy for the user to clearly see the display content of the display screen 17.

[0087] Referring to Figure 2 and Figure 3 , or Figure 6 and Figure 7In some embodiments, the display surface 151 is curved, and the display surface 151 is convex in a direction away from the body portion 111 to form a curved surface. It should be noted that in one example, the entire display surface 151 is curved. In another example, only a portion of the display surface 151 is curved.

[0088] In some embodiments, the display surface 151 is curved, and the display surface 151 is convex in a direction away from the body portion 111 to form a curved surface. It should be noted that in one example, the entire display surface 151 is curved. In another example, only a portion of the display surface 151 is curved.

[0089] In some embodiments, the display surface 151 is flat. The flat display surface 151 of the light-transmissive member 15 can reduce the scattering of light rays emitted from the display screen 17 when the light rays pass through the light-transmissive member 15, and can reduce the loss caused by refraction of the light rays, thereby ensuring that more light rays pass through the light-transmissive member 15 and are transmitted to the outside of the handle barrel 11, and thus improving the clarity of the displayed information.

[0090] Please refer to Figure 3 and Figure 7 In some embodiments, the display surface 151 includes a first portion 1511 near the center of the light-transmissive member 15 and a second portion 1513 surrounding the first portion 1511. The first portion 1511 is flat, and the second portion 1513 is curved.

[0091] The flat first portion 1511 of the display surface 151 can reduce the loss caused by refraction of the light rays, and can ensure that the light rays are uniformly transmitted. The curved second portion 1513 of the display surface 151 can guide the fluid to flow along the display portion 113 in a direction away from the light-transmissive member 15, and can prevent the fluid from gathering on the light-transmissive member 15. The curved second portion 1513 is in an arched structure, and the arched structure has good pressure resistance, which can reduce the risk of breakage of the light-transmissive member 15 caused by falling.

[0092] Please refer to Figure 3 and Figure 7 In some embodiments, the second portion 1513 and the outer wall of the open end 11312 of the display platform 1131 are formed as a continuous curved surface, and the continuous curved surface is convex in a direction away from the body portion 111.

[0093] Specifically, the first part 1511 of the display surface 151 is a flat surface, 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, i.e., the connection area between the second part 1513 of the light-transmitting piece 15 and the open end 11312 of the display platform 1131 is a smooth continuous curved surface without obvious protrusions or depressions. There is no obvious edge or boundary in the continuous curved surface, which is not easy to hide dirt and reduces the difficulty of cleaning and maintenance.

[0094] Please refer to Figure 2 and Figure 3 , or Figure 6 and Figure 7 In some embodiments, the brush handle 10 includes opposite first and second ends 101 and 102, the output shaft 133 of the movement 13 extends from the first end 101 of the brush handle 10, and the display surface 151 is inclined relative to the axis direction X of the brush handle 10. In the direction from the first end 101 of the brush handle 10 to the second end 102 of the brush handle 10, the distance between the display surface 151 and the axis of the brush handle 10 gradually increases.

[0095] Specifically, the movement 13 is accommodated in the handle barrel 11, and the output shaft 133 of the movement 13 extends from the first end 101 of the brush handle 10 and is connected with the electric toothbrush head 30. Thus, the electric toothbrush head 30 can realize high-frequency vibration under the drive of the movement 13 to achieve the effect of cleaning teeth. When the display surface 151 is parallel to the axis direction X of the brush handle 10, i.e., the normal line (a line perpendicular to the display surface 151) of the light-transmitting piece 15 forms a 90-degree angle with the axis direction X of the brush handle 10, the light-transmitting piece 15 is in a horizontal state; when the normal line of the light-transmitting piece 15 forms a non-90-degree angle with the axis direction X of the brush handle 10, the light-transmitting piece 15 is in an inclined state, i.e., the display surface 151 is inclined relative to the axis direction X of the brush handle 10.

[0096] The distance between the display surface 151 and the axis of the brush handle 10 gradually increases, i.e., the display surface 151 is more towards the end of the electric toothbrush 100 where the electric toothbrush head 30 is provided. Thus, in the case that the user uses the electric toothbrush 100, the light-transmitting piece 15 can better adapt to the visual angle of the user when brushing teeth, ensuring that the light of the display screen 17 can more effectively transmit through the light-transmitting piece 15 and in the direction of the user's visual line, thereby facilitating the user to observe the information displayed on the display screen 17.

[0097] Please refer to Figure 2 and Figure 3 , or Figure 6 and Figure 7 In some embodiments, in the direction from the first end 101 of the brush handle 10 to the second end 102 of the brush handle 10, the distance between the display surface 151 and the axis of the brush handle 10 gradually decreases.

[0098] Specifically, the distance between the display surface 151 and the axis of the brush handle 10 gradually decreases, that is, the display surface 151 is more away from the end of the electric toothbrush head 30 of the electric toothbrush 100. Thus, it is difficult for the foam or liquid on the electric toothbrush head 30 to splash to the display surface 151, which is beneficial to keep the transparent piece 15 clean and ensure the display information of the display screen 17 to be clearly visible.

[0099] Please refer to Figure 2 and Figure 3 , or Figure 6 and Figure 7 In some embodiments, the hardness of the transparent piece 15 is greater than the hardness of the display platform 1131.

[0100] Specifically, when the electric toothbrush 100 falls or is impacted, the transparent piece 15 with greater hardness has sufficient strength, and in the case that the transparent piece 15 is subjected to external force, the transparent piece 15 can effectively resist the external force to avoid structural damage of the transparent piece 15, thereby prolonging the service life of the transparent piece 15. The transparent piece 15 with greater hardness can also support the display platform 1131 to avoid deformation of the display platform 1131, thereby ensuring the assembly precision between the transparent piece 15 and the display platform 1131.

[0101] Please refer to Figure 2 and Figure 3 , or Figure 6 and Figure 7 In some embodiments, the display platform 1131 is plastic, and the transparent piece 15 is transparent glass or transparent plastic.

[0102] Specifically, the display platform 1131 is plastic, so that the display platform 1131 can have a certain elasticity. In the case that the electric toothbrush 100 falls outside and the display platform 1131 collides with the ground, the display platform 1131 can have a certain buffering effect, thereby reducing the possibility of damage to the transparent piece 15 and prolonging the service life of the transparent piece 15. The transparent glass has high light transmittance, and the transparent piece 15 made of transparent glass can effectively transmit light to ensure that the display information is clearly visible. The transparent plastic is lighter in quality, and the transparent piece 15 made of transparent plastic can reduce the weight of the electric toothbrush 100.

[0103] Please refer to Figures 2 to 4 , or Figures 6 to 8 In some embodiments, the display platform 1131 includes a connecting end 11311 and an open end 11312. The connecting end 11311 is connected to the body part 111, and the open end 11312 protrudes away from the body part 111. The open end 11312 is provided with a mounting opening, and the transparent piece 15 is mounted in the mounting opening.

[0104] Specifically, the display platform 1131 comprises a connecting end 11311 and an open end 11312, the connecting end 11311 is used to connect the display platform 1131 with the body part 111. The connecting manner can be detachable connection or non-detachable connection. The connecting end 11311 ensures that the display platform 1131 is fixed to the body part 111, avoiding the display platform 1131 from loosening due to vibration during use of the electric toothbrush 100.

[0105] The light-transmitting piece 15 is arranged in the display platform 1131 from the open end 11312, the light-transmitting piece 15 is installed in the open end 11312, the open end 11312 protrudes towards the direction away from the body part 111 and is provided with a mounting port, and the light-transmitting piece 15 is installed in the mounting port, so that the light-transmitting piece 15 can be fixed on the display platform 1131. When the electric toothbrush 100 falls or collides, the open end 11312 can absorb part of the impact force, protecting the light-transmitting piece 15 from being broken due to external impact force.

[0106] Referring to Figures 2 to 4 , or Figures 6 to 8 In some embodiments, the light-transmitting piece 15 is sealingly connected with the open end 11312 and exposed to the outside of the display platform 1131. Specifically, the light-transmitting piece 15 is sealingly installed in the open end 11312 and exposed to the outside of the display platform 1131, making the light-transmitting piece 15 easier to install and disassemble.

[0107] Referring to Figure 3 and Figure 4 , or Figure 7 and Figure 8 In some embodiments, the movement mechanism 13 further comprises a motor 131, the motor 131 is spaced apart from the display screen 17, and the distance between the motor 131 and the display screen 17 is greater than or equal to 3 mm.

[0108] Specifically, the distance between the motor 131 and the display screen 17 can be 3 mm, 3.5 mm, 4.1 mm, 5.7 mm, 6.11 mm, 6.45 mm, 6.74 mm, 6.95 mm, 7.11 mm or 7.98 mm, or any value greater than 3 mm or any value between any two values greater than 3 mm. If the distance between the motor 131 and the display screen 17 is less than 3 mm, the distance between the motor 131 and the display screen 17 is too small, and the vibration generated by the motor 131 when running can easily affect the display screen 17, causing the display screen 17 to loosen and shift. In addition, the vibration can also cause the content displayed on the display screen 17 to shake, making it difficult for the user to observe the displayed content.

[0109] In some embodiments of the present application, the motor 131 is spaced apart from the display screen 17 by a distance greater than or equal to 3 mm, so that the motor 131 is spaced apart from the display screen 17 by a sufficient distance, and the vibration generated by the motor 131 when operating does not easily affect the display screen 17, thereby ensuring the stability of the installation of the display screen 17 and the stability of the content displayed by the display screen 17.

[0110] Referring to Figure 2 and Figure 3 , or Figure 6 and Figure 7 , in some embodiments, at least part of the display surface 151 protrudes in a direction away from the open end 11312 of the display table 1131.

[0111] Specifically, the protruding part of the display surface 151 can expand the visual angle of the user, and the user can capture the light transmitted from the display screen 17 through the light-transmitting piece 15 from more angles, thereby improving the visual experience of the user when observing the display screen 17 from different directions. In addition, the protruding part of the display surface 151 has a certain curvature, which helps to disperse the reflected light of the light transmitted from the display screen 17 through the light-transmitting piece 15, reduces the glare phenomenon at a certain angle, and makes the display information of the display screen 17 more easily recognizable.

[0112] Referring to Figure 2 , Figure 3 and Figure 4 , or Figure 6 , Figure 7 and Figure 8 , in some embodiments, the display surface 151 and / or the inner surface 152 are provided with a light-shielding layer 80, the light-shielding layer 80 includes opposite inner and outer rings 81 and 83, the outer ring 83 is farther away from the center of the light-transmitting piece 15 than the inner ring 81 in the circumferential direction of the light-transmitting piece 15, and the light-shielding layer 80 covers at least a region corresponding to the region between the circumferential side surface of the display screen 17 and the inner wall of the display table 1131 on the light-transmitting piece 15.

[0113] Specifically, in some embodiments, since there is a certain gap between the circumferential side surface of the display screen 17 and the inner wall of the display table 1131, and there is a region corresponding to the gap on the light-transmitting piece 15, the light transmitted from the display screen 17 by the light-emitting part is easy to pass through the space between the gap and the region corresponding to the gap, and scatter inside the body part 111, so that the user cannot clearly observe the display information of the display screen 17, affecting the display effect of the display screen 17, and the light may also affect the service life of the elements inside the body part 111. Therefore, the setting of the light-shielding layer 80 can absorb and block the light transmitted from the display screen 17 to the inside of the body part 111, avoid the transmission and scattering of the light inside the body part 111, reduce the reflection and glare, ensure the brightness and clarity of the display screen 17, help the user to observe the display information, and also avoid the light affecting the elements inside the body part 111.

[0114] Referring to Figure 2 , Figure 3 and Figure 4 , or Figure 6 , Figure 7 and Figure 8 , in some embodiments, in the projection plane projected in the direction X towards the axis of the brush handle 10, the light-transmitting piece 15 comprises a first portion 1511 opposite the display screen 17 and a second portion 1513 surrounding the first portion 1511, the inner surface 152 of the second portion 1513 protrudes from the handle barrel 11 by a height not greater than the second surface 175 of the display screen 17 protrudes from the handle barrel 11.

[0115] Specifically, in the projection plane projected in the direction X towards the axis of the brush handle 10, the light-transmitting piece 15 comprises a first portion 1511 opposite the display screen 17 and a second portion 1513 surrounding the first portion 1511. The first portion 1511 is used to directly transmit the light emitted by the light-emitting part through the display screen 17, ensuring that the display information is clearly visible. The inner surface 152 of the second portion 1513 protrudes from the handle barrel 11 by a height not greater than the second surface 175 of the display screen 17 protrudes from the handle barrel 11, so that the display content of the display screen 17 is not easily blocked by the display stand 1131, and the user can see the display content of the display screen 17 through the second portion 1513.

[0116] Referring to Figure 2 , Figure 3 and Figure 4 , or Figure 6 , Figure 7 and Figure 8 , in some embodiments, in the projection plane projected in the direction X towards the axis of the brush handle 10, the distance between the outer contour of the display screen 17 and the outer contour of the light-transmitting piece 15 is greater than 1 mm. Specifically, the distance between the outer contour of the display screen 17 and the outer contour of the light-transmitting piece 15 can be 1 mm, 2 mm, 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, 9 mm or 10 mm, or any value greater than 1 mm or any value between any two values greater than 1 mm.

[0117] If the distance between the outer contour of the display screen 17 and the outer contour of the light-transmitting piece 15 is less than 1 mm, the distance between the outer contour of the display screen 17 and the outer contour of the light-transmitting piece 15 is too small, and the display content of the edge part of the display screen 17 can be blocked by the display table and cannot be observed by the user in the case that the user does not directly observe the display screen 17 through the light-transmitting piece 15, which affects the user experience. In some embodiments of the present application, the distance between the outer contour of the display screen 17 and the outer contour of the light-transmitting piece 15 is greater than 1 mm, which can ensure that the light of the display screen 17 can pass through the light-transmitting piece 15, the user can easily see the display content of the display screen 17, and the user experience is improved.

[0118] Please refer to Figure 2 , Figure 3 and Figure 4 , or Figure 6 , Figure 7 and Figure 8 In some embodiments, the handle barrel 11 is provided with a display window 119, the display window 119 penetrates the display part 113 and the body part 111, and the light-transmitting piece 15 is arranged on the display window 119. The inner surface 152 of the light-transmitting piece 15 is spaced apart from the movement 13, the display screen 17 is connected to the inner surface 152 of the light-transmitting piece 15, and is electrically connected to the movement 13.

[0119] Specifically, the display window 119 penetrates the display part 113 and the body part 111, so that the light can be emitted from the display screen 17 and then emitted to the outside through the display window 119. The spacing between the movement 13 and the display screen 17 can avoid the interference of the vibration of the movement 13 during operation on the light transmitted from the display screen 17, and ensure the clarity and stability of the display effect. The display screen 17 is connected to the inner surface 152 of the light-transmitting piece 15, which can shorten the distance between the display screen 17 and the light-transmitting piece 15, ensure the clear display of the display content, and facilitate the user to observe the display content of the display screen 17.

[0120] Please refer to Figure 2 , Figure 3 and Figure 4 , or Figure 6 , Figure 7 and Figure 8 In some embodiments, the movement 13 comprises a main control board 135 and a wiring part 137, the wiring part 137 is arranged on the main control board 135 and exposed to the display window 119, and the display screen 17 comprises a connecting part 171, the connecting part 171 is electrically connected to the wiring part 137 through a connecting line.

[0121] Specifically, the main control board 135 is configured to receive and process information, and control the operation of the motor 131, the display screen 17 and other elements according to a preset algorithm. The wiring portion 137 is configured to connect the main control board 135 and the interface of other electrical components. In the embodiments of the present application, the interface of the display screen 17 is a connecting portion 171. The connecting portion 171 is configured to be electrically connected with the wiring portion 137. The wiring portion 137 can be one or more, and the connecting portion 171 can be one or more. The main control board 135 can control the display screen 17 to emit light through the connecting line and the wiring portion 137, thereby realizing the display function. The wiring portion 137 is arranged on the main control board 135 and exposed to the display window 119, so that the user can directly view the wiring portion 137, thereby facilitating maintenance and replacement.

[0122] Please refer to Figure 2 , Figure 3 and Figure 4 , or Figure 6 , Figure 7 and Figure 8 In some embodiments, the connecting line portion 137 is clamped between the display screen 17 and the inner wall of the display table 1131.

[0123] Specifically, the connecting line portion 137 is clamped between the display screen 17 and the inner wall of the display table 1131, which helps to fix the connecting line and avoid the connecting line from falling off, and also makes the inside of the display table 1131 more tidy.

[0124] Please refer to Figure 2 , Figure 3 and Figure 4 , or Figure 6 , Figure 7 and Figure 8 In some embodiments, a third buffer 53 is arranged between the display table 1131 and the display screen 17, and the connecting line portion 137 is clamped between the buffer and the inner wall of the display table 1131.

[0125] Specifically, the third buffer 53 can be made of soft and elastic materials, such as silicone, rubber or polyvinyl chloride, etc. The rubber includes but is not limited to natural rubber, nitrile rubber, fluororubber, polyurethane rubber, ethylene propylene diene rubber or silicone rubber, etc. The third buffer 53 can restore to its original state after being subjected to a force, effectively absorbing and dispersing the force. The third buffer 53 is arranged between the display table 1131 and the display screen 17, which can play a buffering role in the case that the electric toothbrush 100 is subjected to external force, dispersing and absorbing the force, thereby reducing the direct damage of the force to the display table 1131 and the display screen 17. The connecting line portion 137 is clamped between the buffer and the inner wall of the display table 1131, which helps to fix the connecting line and avoid damage of the connecting line caused by vibration or impact

[0126] Please refer to Figure 6 , Figure 7 and Figure 8 In some embodiments, the display portion 113 further comprises a reinforcing portion 1134 arranged on the display platform 1131, the reinforcing portion 1134 at least abuts with at least part of the inner wall of the display platform 1131, and the reinforcing portion 1134 is connected with the display platform 1131 and / or the body portion 111.

[0127] Specifically, the reinforcing portion 1134 and the display platform 1131 are in a split structure, i.e., the reinforcing portion 1134 and the display platform 1131 are two different structures. In one example, the reinforcing portion 1134 and the display platform 1131 can be combined together by a detachable connection mode, which includes but is not limited to a buckle connection or a threaded connection, etc. In another example, the reinforcing portion 1134 and the display platform 1131 can be combined together by a non-detachable connection mode, which includes but is not limited to bonding or welding, etc. It can be understood that when the reinforcing portion 1134 is connected with the body portion 111, the connection mode can be a detachable connection mode or a non-detachable connection mode. The connection mode between the reinforcing portion 1134 and the display platform 1131 can be different from the connection mode between the reinforcing portion 1134 and the body portion 111.

[0128] In some embodiments, the reinforcing portion 1134 can be made of a hard material, such as PP, ABS or PBT plastic, etc. The material of the reinforcing portion 1134 can be the same as the material of the display platform 1131, for example, the material of the reinforcing portion 1134 and the material of the display platform 1131 are both PP plastic; or the material of the reinforcing portion 1134 and the material of the display platform 1131 can also be different, for example, the material of the reinforcing portion 1134 is PP plastic, and the material of the display platform 1131 is ABS plastic.

[0129] The connection of the reinforcing portion 1134 and the display platform 1131 can avoid the deformation of the display platform 1131 caused by external pressure or impact, thereby ensuring the installation stability between the display screen 17 and the light-transmitting piece 15 and maintaining the correct alignment of the display screen 17. The connection of the reinforcing portion 1134 and the display platform 1131 can also reduce the amplitude of vibration transmitted to the display platform 1131, thereby avoiding the loosening or displacement of the display screen 17 caused by vibration. The connection of the reinforcing portion 1134 and the display platform 1131 can disperse stress through the body portion 111 when the electric toothbrush 100 is impacted, thereby reducing the stress on the display platform 1131 and the reinforcing portion 1134, improving the impact resistance of the reinforcing portion 1134 and the display platform 1131, and prolonging the service life. The connection of the reinforcing portion 1134 and the body portion 111 can also limit the relative displacement between the display platform 1131 and the body portion 111, thereby avoiding the loosening or misalignment of the display platform 1131 and the body portion 111 caused by long-term use or vibration.

[0130] Referring to Figure 2 , Figure 3 and Figure 4 In some embodiments, the open end 11312 of the display stand 1131 is provided with a first mounting portion 11317, the first mounting portion 11317 is provided with a first mounting groove 1135, and the light-transmitting piece 15 is accommodated in the first mounting groove 1135, and the peripheral side surface of the light-transmitting piece 15 abuts against the inner wall of the first mounting groove 1135.

[0131] Specifically, the open end 11312 of the display stand 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 arranged on the display stand 1131. The first mounting portion 11317 can mount and fix the light-transmitting piece 15, wherein the inner wall of the first mounting groove 1135 can provide support for the light-transmitting piece 15, so that the light-transmitting piece 15 is not easily displaced, and the first mounting groove 1135 also has a positioning effect, facilitating the installation of the light-transmitting piece 15. In the projection plane projected in the axial direction X of the brush handle 10, 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 piece 15, thereby further improving the fixation and support of the first mounting groove 1135 on the light-transmitting piece 15.

[0132] Referring to Figure 2 , Figure 3 and Figure 4 In some embodiments, the brush handle 10 further comprises a second sealing piece 72, which is arranged between the side surface of the first mounting groove 1135 and the peripheral side surface of the light-transmitting piece 15.

[0133] The second sealing piece 72 can be made of rubber, silicone, polypropylene or other materials. The second sealing piece 72 can be one or more, which is not limited in the present application. The second sealing piece 72 can be separately formed and sleeved on the display stand 1131 or the body portion 111, or can be sleeved and formed on the display stand 1131 or the body portion 111 in the form of encapsulation. The second sealing piece 72 can seal the gap between the side surface of the first mounting groove 1135 and the peripheral side surface of the light-transmitting piece 15, thereby improving the waterproofness of the electric toothbrush 100. Moreover, the second sealing piece 72 has low cost and does not occupy additional installation volume.

[0134] Referring to Figure 2 , Figure 3 and Figure 4In some embodiments, the second seal 72 is arranged between the bottom surface of the first mounting groove 1135 and the inner surface 152 of the light-transmitting member 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 member 15, thereby improving the waterproof performance of the electric toothbrush 100. In addition, the second seal 72 has low cost and does not occupy additional installation space.

[0135] In some embodiments, the open end 11312 of the display stand 1131 is further provided with a second mounting portion 11318, and the second mounting portion 11318 is provided with a second mounting groove 1136. The second mounting groove 1136 is in communication with the first mounting groove 1135, and the display screen 17 is accommodated in the second mounting groove 1136. Figure 2 Figure 3 In some embodiments, the open end 11312 of the display stand 1131 is further provided with a second mounting portion 11318, and the second mounting portion 11318 is provided with a second mounting groove 1136. The second mounting groove 1136 is in communication with the first mounting groove 1135, and the display screen 17 is accommodated in the second mounting groove 1136. Figure 4 In some embodiments, the open end 11312 of the display stand 1131 is further provided with a second mounting portion 11318, and the second mounting portion 11318 is provided with a second mounting groove 1136. The second mounting groove 1136 is in communication with the first mounting groove 1135, and the display screen 17 is accommodated in the second mounting groove 1136.

[0136] In some embodiments, the display screen 17 includes a first face 173 and a second face 175 opposite to each other, and a peripheral side surface connecting the first face 173 and the second face 175. The inner wall surface of the second mounting groove 1136 includes a side surface and a bottom surface connected to each other, and the peripheral side surface of the display screen 17 is spaced apart from the side surface of the second mounting groove 1136.

[0137] Figure 2 In some embodiments, the display screen 17 includes a first face 173 and a second face 175 opposite to each other, and a peripheral side surface connecting the first face 173 and the second face 175. The inner wall surface of the second mounting groove 1136 includes a side surface and a bottom surface connected to each other, and the peripheral side surface of the display screen 17 is spaced apart from the side surface of the second mounting groove 1136. Figure 3 Figure 4 In some embodiments, the display screen 17 includes a first face 173 and a second face 175 opposite to each other, and a peripheral side surface connecting the first face 173 and the second face 175. The inner wall surface of the second mounting groove 1136 includes a side surface and a bottom surface connected to each other, and the peripheral side surface of the display screen 17 is spaced apart from the side surface of the second mounting groove 1136.

[0138] In some embodiments, the display screen 17 includes a first face 173 and a second face 175 opposite to each other, and a peripheral side surface connecting the first face 173 and the second face 175. The inner wall surface of the second mounting groove 1136 includes a side surface and a bottom surface connected to each other, and the peripheral side surface of the display screen 17 is spaced apart from the side surface of the second mounting groove 1136.

[0139] In some embodiments, the display screen 17 includes a first face 173 and a second face 175 opposite to each other, and a peripheral side surface connecting the first face 173 and the second face 175. The inner wall surface of the second mounting groove 1136 includes a side surface and a bottom surface connected to each other, and the peripheral side surface of the display screen 17 is spaced apart from the side surface of the second mounting groove 1136. Figure 2 Figure 3 In some embodiments, the display screen 17 includes a first face 173 and a second face 175 opposite to each other, and a peripheral side surface connecting the first face 173 and the second face 175. The inner wall surface of the second mounting groove 1136 includes a side surface and a bottom surface connected to each other, and the peripheral side surface of the display screen 17 is spaced apart from the side surface of the second mounting groove 1136. Figure 4 ​​​​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.

[0140] Specifically, the distance between the peripheral side of the display screen 17 and the side of the second mounting groove 1136 can be 1 mm, 2 mm, 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, or 10 mm. If the distance between the peripheral side of the display screen 17 and the side of the second mounting groove 1136 is less than 1 mm, the deformation of the second mounting groove 1136 can easily affect the display screen 17 in the event of a fall of the electric toothbrush 100. The distance between the peripheral side of the display screen 17 and the side of the second mounting groove 1136 being greater than 1 mm can provide additional buffer space, which can help to absorb and disperse external impact forces and avoid the display screen 17 being excessively pressed by the side of the mounting groove when impacted, thereby causing damage.

[0141] Referring to Figure 2 , Figure 3 and Figure 4 In some embodiments, the brush handle 10 further comprises a fourth buffer member 54 disposed between the peripheral side of the display screen 17 and the side of the second mounting groove 1136.

[0142] The fourth buffer member 54 can be made of a soft and elastic material, such as silicone, rubber, or polyvinyl chloride, etc. The rubber includes, but is not limited to, natural rubber, nitrile rubber, fluororubber, polyurethane rubber, ethylene propylene diene rubber, or silicone rubber, etc. The fourth buffer member 54 can restore to its original shape after being subjected to a force, effectively absorbing and dispersing the force. The fourth buffer member 54 is disposed between the peripheral side of the display screen 17 and the side of the second mounting groove 1136, which can play a buffering role in the event of external forces acting on the electric toothbrush 100, dispersing and absorbing the forces, and reducing the direct damage of the forces to the peripheral side of the display screen 17 and the side of the second mounting groove 1136.

[0143] Referring to Figure 2 , Figure 3 and Figure 4 In some embodiments, the fourth buffer member 54 is disposed between the second face 175 of the display screen 17 and the bottom face of the second mounting groove 1136.

[0144] The fourth buffer member 54 is disposed between the second face 175 of the display screen 17 and the bottom face of the second mounting groove 1136, which can play a buffering role in the event of external forces acting on the electric toothbrush 100, dispersing and absorbing the forces, and reducing the direct damage of the forces to the second face 175 of the display screen 17 and the bottom face of the second mounting groove 1136.

[0145] In the description of the specification, the description of the terms "certain embodiments", "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example" or "some examples" means that the specific feature, structure, material or characteristic being described is included in at least one embodiment or example of the application. The illustrative description of the above terms does not necessarily indicate that a description is referring to the same or a similar embodiment or example. Moreover, the specific features, structures, materials or characteristics can be combined in any suitable manner in one or more embodiments or examples.

[0146] Furthermore, the terms "first", "second" or the like are used merely to describe corresponding features, and do not imply or connote relative importance or a number of the indicated technical features. Thus, a feature defined with "first", "second" can include at least one of the features explicitly or implicitly. In the description of the application, the meaning of "plurality" is at least two, for example two, three, unless otherwise explicitly specified.

[0147] Although the embodiments of the present application have been shown and described above, it is understood that the above-described embodiments are exemplary, and are not to be interpreted as limiting the present application, and the ordinary skilled person in the art can make changes, modifications, replacements and variations to the above-described embodiments within the scope of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A brush handle, characterized in that The handle tube comprises a body part and a display part mounted on the body part, the display part comprises a display platform, the display platform protrudes away from the body part and forms a mounting cavity; The core is arranged in the handle tube; The display part further comprises a light-transmitting piece, a display screen, a light-emitting part and a display surface, the light-transmitting piece is mounted on the display platform; the display screen is contained in the mounting cavity, the light emitted by the light-emitting part can pass through the display screen and the light-transmitting piece in sequence and exit to the outside of the handle tube; the display surface is the outer surface of the light-transmitting piece, and the plane where the orthographic projection of the display surface is located is a first plane.

2. The brush handle according to claim 1, wherein The display platform is integrally formed with the body part; or The display platform is separately formed with the body part, and the display platform is connected with the body part and / or the core by at least one of screw connection, thread connection, adhesion and welding. The display platform is separately formed with the body part, and a first sealing piece is arranged between the display platform and the body part.

3. A brush handle according to claim 2, wherein In the axial direction of the display surface, the height by which the display platform protrudes relative to the body part is greater than or equal to 0.5 mm and less than or equal to 10 mm.

4. The brush handle of claim 1, wherein The projection of the display platform on the first plane is a first area, the projection of the body part on the first plane is a second area, and the first area is located outside the second area.

5. The brush handle of claim 1, wherein The display platform comprises an extension part, the extension part comprises an open end, the light-transmitting piece is mounted on the open end, and in the axial direction of the display surface, the cross-sectional area of the outer circumferential surface of the extension part gradually increases.

6. The brush handle of claim 1, wherein The angle between the outer circumferential surface of the extension part and the axial direction of the display surface is greater than or equal to 0° and less than or equal to 60°.

7. A brush handle according to claim 6, wherein The minimum distance between the outer contour of the projection of the display screen on the first plane and the outer contour of the projection of the light-transmitting piece on the first plane is greater than or equal to 2 mm.

8. The brush handle of claim 6, wherein The connection between the extension part and the body part is chamfered.

9. The brush handle of claim 6, wherein, The display platform comprises an outer circumferential surface protruding relative to the body part, the body part comprises an outer circumferential surface, the outer circumferential surface of the display platform is connected relative to the outer circumferential surface of the body part and surrounds a flow guide groove, and the outer circumferential surface of the display platform is inclined relative to the axial direction of the display surface and has a slope greater than or equal to 0.

5.

10. The brush handle of claim 1, wherein The display platform comprises a connection end and an open end, the connection end is connected with the body part, and the open end protrudes away from the body part; 11. The brush handle of claim 1, wherein The light-transmitting piece is arranged in the display platform from the open end, and the light-transmitting piece is mounted in the open end; or The light-transmitting piece is sealingly connected with the open end. The outer surface and / or the inner surface of the light-transmitting piece is provided with a light-shielding layer, the light-shielding layer comprises opposite inner and outer rings, in the circumferential direction of the light-transmitting piece, the outer ring is farther away from the center of the light-transmitting piece than the inner ring, and the light-shielding layer covers at least a region corresponding to the region between the circumferential surface of the display screen and the inner wall of the display platform.

12. The brush handle of claim 1, wherein ​ 13. The brush handle of claim 1, wherein The light-transmitting member comprises a first part opposite to the display screen and a second part surrounding the first part, the display screen comprises opposite first and second faces, the first face is closer to the light-transmitting member than the second face, and the inner surface of the second part protrudes from the handle barrel by a height not greater than the height by which the display screen protrudes from the handle barrel.

14. The brush handle of claim 1, wherein The display face is curved, and the outer surface protrudes in a direction away from the body portion to form a curved surface; or The display face comprises a first part close to the center of the light-transmitting member and a second part surrounding the first part, the first part is planar, and the second part is curved; or The display face comprises a first part close to the center of the light-transmitting member and a second part surrounding the first part, the first part is planar, and the second part and the outer wall of the open end of the display platform form a continuous curved surface, and the continuous curved surface protrudes in a direction away from the body portion.

15. The brush handle of claim 1, wherein The handle barrel is provided with a display window, the display window penetrates the display portion and the body portion, the light-transmitting member is arranged in the display window, the inner surface of the light-transmitting member close to the display screen is spaced from the movement, the display screen is connected to the inner surface of the light-transmitting member and electrically connected to the movement.

16. The brush handle of claim 15, wherein, The movement comprises a main control board and a wiring portion, the wiring portion is arranged on the main control board and exposed to the display window, the display screen comprises a connecting portion, and the connecting portion is electrically connected to the wiring portion through a connecting line.

17. The brush handle of claim 1, wherein The display portion further comprises a reinforcing portion arranged on the display platform, the reinforcing portion is attached to at least part of the inner wall of the display platform, and the reinforcing portion is connected to the display platform and / or the body portion.

18. An electric toothbrush, characterized by The brush handle comprises: The brush handle according to any one of claims 1-17, and The electric toothbrush head is mounted on the brush handle.

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