Brush handle and electric toothbrush

Abstract

The embodiment of the utility model provides a brush handle and an electric toothbrush. The brush handle comprises a handle shell, a machine core, a light-transmitting piece and a display screen. The handle shell comprises a body part and a display part installed on the body part, the body part comprises a gradually-shrinking part and a loading part which are connected, the display part comprises a display table, the display table protrudes in the direction away from the body part, and the part of the display table is opposite to the gradually-shrinking part in the axis direction of the display table in a spaced mode. The movement is arranged in the handle shell, the gradually-shrinking part comprises a first end and a second end which are opposite, an output shaft of the movement extends out of the first end of the gradually-shrinking part, and the second end of the gradually-shrinking part is connected with the loading part. The light-transmitting piece is installed on the display table. The display screen is installed on the display part and / or the movement, and light emitted by the display screen can penetrate through the light-transmitting piece to be emitted out of the handle shell. According to the toothbrush, fluid generated during tooth brushing is difficult to flow to the light-transmitting part, so that the possibility that the fluid is accumulated on the surface of the light-transmitting part is reduced, and a user can clearly observe the display content of the display screen through the light-transmitting part.

Description

Technical Field

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

[0002] In related technologies, electric toothbrushes include a brush head and a handle. The handle includes a handle housing, a motor, and a display screen. Both the motor and the display screen are mounted on the handle housing. The surface of the handle housing has a light-transmitting element that allows light emitted from the display screen to pass through to the outside of the handle housing. The light-transmitting element is positioned close to the brush head. Generally, during brushing, liquid flows along the brush head's handle to the handle housing, and then along the tapered section of the handle housing towards the light-transmitting element. If the liquid flows onto the light-transmitting element, it will obstruct the display content, affecting the user's viewing experience. Utility Model Content

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

[0004] The brush handle of this application embodiment is used for an electric toothbrush. The brush handle includes a handle housing, a motor, a light-transmitting element, and a display screen. The handle housing includes a main body and a display section mounted on the main body. The main body includes a tapered portion and a mounting portion that are connected to each other. The display section includes a display platform that protrudes away from the main body. A portion of the display platform and the tapered portion are spaced apart and opposite to each other along the axial direction of the display platform. The motor is disposed inside the handle housing. The tapered portion includes a first end and a second end that are opposite each other. The output shaft of the motor extends from the first end of the tapered portion, and the second end of the tapered portion is connected to the mounting portion. The light-transmitting element is mounted on the display platform. The display screen is mounted on the display section and / or the motor, and the light emitted by the display screen can pass through the light-transmitting element and be projected to the outside of the handle housing.

[0005] In the brush handle of this embodiment, the display platform protrudes in a direction away from the main body. The portion of the display platform and the tapered portion are spaced apart and opposite each other in the axial direction of the display platform, and the light-transmitting element is installed on the display platform. In this way, the fluid generated when brushing teeth is difficult to flow onto the light-transmitting element, reducing the possibility of fluid accumulating on the surface of the light-transmitting element, so that the user can clearly observe the display content of the screen through the light-transmitting element.

[0006] In some embodiments, at least a portion of the display platform protruding relative to the body portion forms a flow channel together with the tapered portion, the flow channel being used to guide fluid along the display platform toward a side away from the light-transmitting element.

[0007] The flow guide 115 guides the flow of fluid. During brushing, fluid (such as toothpaste foam and water) flows from the electric toothbrush head to the handle. Fluid tends to flow along the path of least resistance. Therefore, after reaching the flow guide, the display platform obstructs the flow. However, the sides of the display platform (opposite sides in the flow direction, perpendicular to both the handle's and the platform's axis) do not obstruct the flow. Consequently, the fluid tends to flow laterally towards the display platform. This means that, guided by the flow guide, the fluid flows along the display platform away from the light-transmitting element, preventing fluid from flowing towards the light-transmitting element and reducing the likelihood of fluid accumulation on its surface. This allows the user to clearly see the content displayed on the screen through the light-transmitting element. Additionally, the flow guide also prevents splashed foam from obstructing the light-transmitting element, ensuring the user can clearly see the content displayed on the screen.

[0008] In some embodiments, the display platform includes an outer peripheral surface that protrudes relative to the body portion. The body portion includes an outer peripheral surface. The outer peripheral surface of the display platform is connected to and opposite to the outer peripheral surface of the body portion, forming the flow guide groove. The outer peripheral surface of the display platform is inclined relative to the axis of the display platform, and the slope is greater than or equal to 0.5.

[0009] If the slope is less than 0.5, after the fluid flows into the guide channel, the tilt angle between the part of the display stand near the electric toothbrush head and the main body is small. That is, the resistance to the fluid flow is small in the part of the display stand near the electric toothbrush head, and the fluid easily flows from the outer peripheral surface of the main body to the outer peripheral surface of the display stand, and then to the outer surface of the light-transmitting element. However, in some embodiments of this application, the slope is greater than or equal to 0.5. After the fluid flows into the guide channel, the tilt angle between the part of the display stand near the electric toothbrush head and the main body is large. That is, the resistance to the fluid flow is large in the part of the display stand near the electric toothbrush head, and the fluid does not easily flow to the outer surface of the light-transmitting element, thus ensuring the light transmission effect of the light-transmitting element on the display screen.

[0010] In some embodiments, the brush handle includes a first end and a second end opposite to each other, the output shaft of the mechanism extends from the first end of the brush handle, and the outer surface of the light-transmitting element is inclined relative to the axial direction of the brush handle. The distance between the outer surface of the light-transmitting element and the axis of the brush handle gradually increases in the direction from the first end to the second end of the brush handle.

[0011] The distance between the outer surface of the light-transmitting component and the axis of the brush handle gradually increases. That is, the outer surface of the light-transmitting component is more towards the end of the electric toothbrush where the electric toothbrush head is located. As a result, when the user is using the electric toothbrush, the light-transmitting component can better adapt to the user's line of sight while brushing their teeth, ensuring that the light from the display screen can pass through the light-transmitting component more effectively and be transmitted in the direction of the user's line of sight, thereby making it easier for the user to observe the information displayed on the display screen.

[0012] In some embodiments, the brush handle includes a first end and a second end opposite to each other, the output shaft of the mechanism extends from the first end of the brush handle, and the outer surface of the light-transmitting element is inclined relative to the axial direction of the brush handle. The distance between the outer surface of the light-transmitting element and the axis of the brush handle gradually decreases in the direction from the first end to the second end of the brush handle.

[0013] Specifically, the distance between the outer surface of the light-transmitting element and the axis of the brush handle gradually decreases, meaning the outer surface of the light-transmitting element faces more towards the end of the electric toothbrush furthest from the brush head. This makes it difficult for foam or liquid from the electric toothbrush head to splash onto the outer surface of the light-transmitting element, helping to keep it clean and ensuring the clear visibility of the information displayed on the screen.

[0014] In some embodiments, the display platform includes a connecting end and an open end. The connecting end is connected to the main body, and the open end protrudes in a direction away from the main body and is provided with a mounting opening. The light-transmitting element is mounted in the mounting opening.

[0015] The open end protrudes away from the main body and has a mounting opening, where the light-transmitting component is installed. This allows the light-transmitting component to be fixed to the display platform. In the event of a drop or impact, the open end absorbs some of the impact force, protecting the light-transmitting component and preventing it from breaking due to external impact.

[0016] In some embodiments, the display platform includes an outer peripheral surface that protrudes relative to the body portion, and the outer peripheral surface of the display platform is provided with a protrusion that protrudes relative to the light-transmitting element toward the electric toothbrush head.

[0017] Specifically, in some embodiments, the protrusion may be spaced apart from the tapered portion along the axial direction of the display platform, and the protrusion participates in forming a sidewall of the flow guide channel. When fluid (e.g., toothpaste foam and water) flows into the flow guide channel, the protrusion can obstruct the flow of fluid, preventing it from flowing along the outer peripheral surface of the display platform onto the light-transmitting element and obstructing it, thereby ensuring that the user can observe the displayed content through the light-transmitting element.

[0018] In some embodiments, the connection between the outer peripheral surface of the display platform and the outer peripheral surface of the main body is a smooth concave transition, and the curvature of the concave curve gradually increases.

[0019] Specifically, the concave design refers to the arc-shaped structure formed at the connection between the outer peripheral surface of the display stand and the outer peripheral surface of the main body, curving inwards towards the interior of the main body. This smooth concave transition avoids dead angles at the connection, preventing dirt accumulation and facilitating cleaning. The gradually increasing curvature of the concave curve impedes water flow from the outer peripheral surface of the main body to the outer peripheral surface of the display stand, reducing the possibility of water accumulation on the surface of the light-transmitting element and ensuring that users can clearly see the content on the display screen through the light-transmitting element.

[0020] In some embodiments, the display stand has a mounting cavity, and the display screen is housed within the mounting cavity. This provides space for the display screen, reducing interference from the external environment. Furthermore, with the display screen housed within the mounting cavity, it is less likely to be obstructed by the display stand compared to having it within the main body, reducing the distance between the display screen and the light-transmitting element and improving user viewing convenience. Additionally, with the motor housed within the main body and the display screen housed in the mounting cavity, the display screen does not occupy space within the main body, thus reducing the overall size of the main body and making it easier for the user to hold. Moreover, when the electric toothbrush is in operation, the motor and display screen are housed in separate spaces, maintaining a certain distance. This prevents blurring of the display information due to motor vibration and also prevents the display screen from shifting due to vibration, thereby extending the lifespan of the display screen.

[0021] In some embodiments, the display stand and the main body are integrally formed. That is, the display stand and the main body are a single structure, which can improve the bonding strength between the display stand and the main body, prevent the display stand from separating from the main body during the operation of the electric toothbrush, and thus ensure the stability and reliability of the electric toothbrush operation.

[0022] In some embodiments, the display stand and the body are separately formed, and the display stand and the body and / or the mechanism are connected by at least one of the following methods: screw connection, threaded connection, bonding, welding. Separate forming facilitates disassembly and replacement of the display stand and the body.

[0023] In some embodiments, the display stand and the body are integrally formed, and a seal is provided between the display stand and the body.

[0024] The seal effectively seals the gap between the outer periphery of the display panel and the main body, preventing fluid from flowing into the main body through this gap and improving the electric toothbrush's water resistance. Furthermore, the seal is low-cost and does not require additional installation space.

[0025] In some embodiments, the outer contour of the display platform projected onto the projection plane along the axis of the brush handle is larger than the outer contour of the main body. Therefore, the display platform is larger than the main body, allowing for larger design dimensions of the light-transmitting element and the display screen, thus facilitating user viewing of the displayed content through the light-transmitting element.

[0026] In some embodiments, the display platform includes an extension with an open end, the light-transmitting element being mounted on the open end, and the cross-sectional area of ​​the outer peripheral surface of the extension gradually increasing in the axial direction of the display platform.

[0027] The cross-sectional area of ​​the outer periphery of the extension gradually increases. On the one hand, this expands the light emission angle, allowing the light to be evenly distributed on the surface of the light-transmitting component, preventing excessively bright or dark areas on the surface of the light-transmitting component and improving the display effect of the screen. On the other hand, the gradually increasing cross-sectional area of ​​the extension allows the extension to have a certain tilt angle relative to the main body, thereby forming a barrier in the fluid flow path and guiding the fluid to flow in the guide channel. This prevents the fluid from flowing directly from the outer periphery of the extension to the light-transmitting component, thus ensuring the clarity of the light-transmitting component and ensuring that users can clearly see the display content of the screen through the light-transmitting component.

[0028] In some embodiments, the angle between the outer peripheral surface of the extension and the outer peripheral surface of the main body is greater than or equal to 30° and less than or equal to 90°.

[0029] The angle between the outer peripheral surface of the extension and the outer peripheral surface of the main body is greater than or equal to 30° and less than or equal to 90°. This allows fluid to flow more easily along the guide groove, preventing fluid from flowing from the outer peripheral surface of the main body to the outer peripheral surface of the extension and accumulating on the surface of the light-transmitting element. This reduces the likelihood of fluid accumulation on the surface of the light-transmitting element, helping to maintain its clarity and ensuring that users can clearly see the content of the display screen through it.

[0030] In some embodiments, the distance between the outer contour of the extension and the outer contour of the main body is greater than 2 mm in the projection plane projected toward the axis of the brush handle.

[0031] If the distance between the outer contour of the extension projection and the outer contour of the main body projection is less than mm, the fluid is too close to the light-transmitting element from the main body, and the fluid tends to flow towards the surface of the light-transmitting element. If the distance between the outer contour of the extension projection and the outer contour of the main body projection is greater than mm, the distance between the fluid and the light-transmitting element is increased, and the fluid is less likely to flow towards the surface of the light-transmitting element.

[0032] In some embodiments, the connection between the extension and the main body is chamfered. Chamfering at the connection allows for a smooth transition between the extension and the main body, preventing the formation of dead corners, avoiding dirt accumulation, and facilitating cleaning of the connection.

[0033] The electric toothbrush provided in this application includes the brush handle and electric toothbrush head described in any of the above embodiments, wherein the electric toothbrush head is mounted on the brush handle.

[0034] In the electric toothbrush of this embodiment, the display platform protrudes in a direction away from the main body, and the portion of the display platform and the tapered portion are spaced apart and opposite each other in the axial direction of the display platform. The light-transmitting element is installed on the display platform. In this way, the fluid generated during brushing is unlikely to flow onto the light-transmitting element, reducing the possibility of fluid accumulating on the surface of the light-transmitting element, so that the user can clearly observe the display content of the display screen through the light-transmitting element.

[0035] The above description is merely an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, specific embodiments of this application are given below. Attached Figure Description

[0036] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, wherein:

[0037] Figure 1 This is a perspective view of an electric toothbrush according to some embodiments of this application;

[0038] Figure 2 yes Figure 1 A cross-sectional schematic diagram of an electric toothbrush is shown.

[0039] Figure 3 yes Figure 2 The enlarged schematic diagram shown at point III;

[0040] Figure 4 This is a three-dimensional assembly diagram of an electric toothbrush according to other embodiments of this application;

[0041] Figure 5 yes Figure 4 The diagram shown is a three-dimensional exploded view of an electric toothbrush.

[0042] Figure 6 yes Figure 4 A cross-sectional schematic diagram of an electric toothbrush is shown.

[0043] Figure 7 yes Figure 6 The enlarged schematic diagram shown at point VII;

[0044] Figure 8 This is a three-dimensional assembly diagram of an electric toothbrush according to some embodiments of the present application;

[0045] Figure 9 yes Figure 8 The diagram shown is a three-dimensional exploded view of an electric toothbrush.

[0046] Figure 10 yes Figure 8 A cross-sectional schematic diagram of an electric toothbrush is shown.

[0047] Figure 11 yes Figure 10 The enlarged schematic diagram shown at point XI.

[0048] Explanation of key component symbols:

[0049] Electric toothbrush 100;

[0050] Brush handle 10, handle shell 11, body part 111, tapered part 1111, first end 11111, second end 11113, loading part 1113, display part 113, display platform 1131, connecting end 11311, open end 11312, mounting cavity 11313, extension part 11315, guide groove 115, mechanism 13, motor 131, output shaft 133, light-transmitting element 15, outer surface 151, display screen 17, first end 101, second end 102;

[0051] Electric toothbrush head 30, bristles 31, handle 33; seal 71; control key 90; axial direction X. Detailed Implementation

[0052] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the embodiments of this application, and should not be construed as limiting the embodiments of this application.

[0053] In the description of this application, it should be understood that the terms "thickness," "upper," "top," "bottom," "inner," "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0054] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation", "connection" and "linkage" should be interpreted broadly. In one example, they can be a fixed connection, a detachable connection, or an integral connection; they can be a mechanical connection, an electrical connection, or a connection that allows communication between them; they can be a direct connection or an indirect connection through an intermediate medium; they can be the internal connection of two elements or the interaction between two elements.

[0055] In related technologies, electric toothbrushes include a brush head and a handle. The handle includes a handle housing, a motor, and a display screen. Both the motor and the display screen are mounted on the handle housing. The surface of the handle housing has a light-transmitting element that allows light emitted from the display screen to pass through to the outside of the handle housing. The light-transmitting element is positioned close to the brush head. Generally, during brushing, liquid flows along the brush head's handle to the handle housing, and then along the tapered section of the handle housing towards the light-transmitting element. If the liquid flows onto the light-transmitting element, it will obstruct the display content, affecting the user's viewing experience. To solve this problem, please refer to [link to relevant documentation]. Figures 1 to 3 ,or Figures 4 to 7 ,or Figures 8 to 11 This application provides a brush handle 10 and an electric toothbrush 100.

[0056] Please see Figures 1 to 3 ,or Figures 4 to 7 ,or Figures 8 to 11The electric toothbrush 100 of this application includes an electric toothbrush head 30 and a handle 10, with the electric toothbrush head 30 mounted on the handle 10. Specifically, the handle 10 can drive the electric toothbrush head 30 to vibrate at a high frequency, thus allowing the electric toothbrush 100 to clean areas in the mouth that need cleaning through the high-frequency vibration of the electric toothbrush head 30. Areas in the mouth that need cleaning may include, but are not limited to, the tooth surfaces, interdental spaces, and gums. The electric toothbrush head 30 and the handle 10 can be connected in a detachable manner, which facilitates the replacement of electric toothbrush heads 30 with different models or materials; furthermore, when the cleaning effect of the electric toothbrush head 30 decreases due to prolonged use, it is easy to replace it with a new one, thereby ensuring the cleaning effect of the electric toothbrush 100.

[0057] The electric toothbrush 100 includes, but is not limited to, sonic toothbrushes, ultrasonic toothbrushes, plug-in electric toothbrushes, and battery-powered electric toothbrushes. In some embodiments, the electric toothbrush head 30 includes bristles 31 and a handle 33. The bristles 31 are used to clean teeth. The material of the bristles 31 may be, but is not limited to, nylon, rubber, or boar bristles. Preferably, the bristles 31 may have good toughness and elasticity, thereby enabling better cleaning of the areas to be cleaned in the oral cavity. The handle 10 includes a motor 13, which is equipped with a motor 131. One end of the handle 33 is detachably connected to the output shaft 133 of the motor 131, and the other end is provided with bristles. The handle 33 is generally elongated, which facilitates the insertion of the handle 33 into the oral cavity so that the bristles 31 can reach the areas to be cleaned in the oral cavity, thereby ensuring the cleaning effect of the electric toothbrush 100.

[0058] Since the electric toothbrush 100 in this embodiment includes a handle 10, it is understood that the electric toothbrush 100 has at least the same beneficial effects as the handle 10. Therefore, for the beneficial effects of the electric toothbrush 100, please refer to the beneficial effects of the handle 10 described below.

[0059] Please see Figures 1 to 3 ,or Figures 4 to 7 ,or Figures 8 to 11The brush handle 10 of this application embodiment is used for an electric toothbrush 100. The brush handle 10 includes a handle housing 11, a mechanism 13, a light-transmitting element 15, and a display screen 17. The handle housing 11 includes a body portion 111 and a display portion 113 mounted on the body portion 111. The body portion 111 includes a tapered portion 1111 and a loading portion 1113 that are connected to each other. The display portion 113 includes a display platform 1131, which protrudes in a direction away from the body portion 111. A portion of the display platform 1131 is spaced apart from the tapered portion 1111 in the axial direction A of the display platform 1131. The mechanism 13 is disposed inside the handle housing 11. The tapered portion 1111 includes a first end 11111 and a second end 11113 that are opposite each other. The output shaft 131 of the mechanism 13 extends from the first end 11111 of the tapered portion 1111, and the second end 11113 of the tapered portion 1111 is connected to the loading portion 1113. The light-transmitting element 15 is mounted on the display stand 1131. The display screen 17 is mounted on the display unit 113 and / or the mechanism 13, and the light emitted by the display screen 17 can pass through the light-transmitting element 15 and be projected to the outside of the handle housing 11.

[0060] The handle 10 is a structure for the user to hold, enabling the user to operate and use the various functions of the electric toothbrush 100. The handle 10 is typically cylindrical to provide a comfortable grip. The handle 10 may include an anti-slip structure to prevent the electric toothbrush 100 from slipping from the hand during use.

[0061] The handle housing 11 is a structure used to house the motor 13 and other components of the electric toothbrush 100. The handle housing 11 is generally a shell structure with a length greater than its width and diameter. The length direction of the handle housing 11 (i.e., the axial direction X of the brush handle 10) is the same as the axial direction of the output shaft 133 (the output shaft 133 of the motor 131). A through hole is provided at one end of the handle housing 11 along the axial direction of the output shaft 133 for the output shaft 131 to extend out. The handle housing 11 can be made of metallic or non-metallic materials. Metallic materials include, but are not limited to, aluminum, iron, steel, or aluminum alloys, while non-metallic materials include, but are not limited to, plastics. In one example, the handle housing 11 can be made of metallic materials, which increases the structural strength of the handle housing 11, preventing damage during operation of the electric toothbrush 100 and thus improving the stability and reliability of the electric toothbrush 100. In another example, the handle housing 11 can be made of non-metallic materials, which makes the handle housing 11 lighter, thus contributing to the portability of the electric toothbrush 100.

[0062] The display portion 113 is mounted on the body portion 111. In some embodiments, the body portion 111 and the display portion 113 are an integral structure, that is, the body portion 111 and the display portion 113 are a single unit, thereby improving the bonding strength between the body portion 111 and the display portion 113 and preventing separation of the body portion 111 and the display portion 113 during the operation of the brush handle 10, thus ensuring the stability and reliability of the brush handle 10 during operation. In other embodiments, the body portion 111 and the display portion 113 are separate structures, that is, the body portion 111 and the display portion 113 are two different structures. In one example, the body portion 111 and the display portion 113 can be joined together by a detachable connection method, including but not limited to snap-fit ​​connections or threaded connections. In another example, the body portion 111 and the display portion 113 can be joined together by a non-detachable connection method, including but not limited to bonding or welding.

[0063] The display unit 113 includes a display platform 1131. The display platform 1131 protrudes away from the main body 111. Compared to the display platform 1131 being located inside the main body 111, the internal space of the handle housing 11 is not occupied by the display platform 1131, allowing more components to be accommodated inside the handle housing 11. It is understood that the protruding direction of the display platform 1131 is not consistent with the axial direction X of the brush handle 10; that is, the protruding direction of the display platform 1131 is any direction other than the axial direction X of the brush handle 10.

[0064] In some embodiments of this application, the cross-sectional area of ​​the tapered portion 1111 gradually increases from the first end 11111 to the second end 11113 of the tapered portion 1111. Specifically, in the axial direction X of the handle 10, the electric toothbrush 100 sequentially includes an electric toothbrush head 30, a tapered portion 1111, and a loading portion 1113. The first end 11111 of the tapered portion 1111 is closer to the end of the electric toothbrush 100 where the electric toothbrush head 30 is located than the second end 11113 of the tapered portion 1111. The output shaft 133 of the mechanism 13 extends from the first end 11111 of the tapered portion 1111 and connects to the electric toothbrush head 30. The second end 11113 of the tapered portion 1111 is connected to the loading portion 1113, and the cross-sectional areas of the second end 11113 of the tapered portion 1111 and the loading portion 1113 are approximately the same, thereby improving the continuity of the outer surface of the handle housing 11. Furthermore, the first end 11111 of the tapered portion 1111 has a smaller cross-sectional area, allowing at least a portion of the tapered portion 1111 to extend into the oral cavity. This facilitates the electric toothbrush 100 reaching deeper into the oral cavity to clean teeth, increasing the cleaning range of the electric toothbrush 100 and improving its cleaning effect. It should be noted that in some embodiments, the direction from the first end 11111 to the second end 11113 of the tapered portion 1111 is substantially the same as the axial direction X of the brush handle 10.

[0065] In some embodiments, the tapered portion 1111 and the loading portion 1113 are an integral structure, that is, the tapered portion 1111 and the loading portion 1113 are a single unit, thereby improving the bonding strength between the tapered portion 1111 and the loading portion 1113 and preventing separation of the tapered portion 1111 and the loading portion 1113 during operation, thus ensuring the stability and reliability of the electric toothbrush 100. In other embodiments, the tapered portion 1111 and the loading portion 1113 are separate structures, that is, the tapered portion 1111 and the loading portion 1113 are two different structures. In one example, the tapered portion 1111 and the loading portion 1113 can be joined together by a detachable connection, including but not limited to snap-fit ​​connections or threaded connections. In another example, the tapered portion 1111 and the loading portion 1113 can be joined together by a non-detachable connection, including but not limited to bonding or welding.

[0066] The portion of the display stand 1131 and the tapered portion 1111 are spaced apart and opposite each other along the axial direction A of the display stand 1131 (the axial direction A of the display stand 1131 can be substantially perpendicular to the axial direction X of the brush handle 10). That is, the portion of the display stand 1131 and the tapered portion 1111 have a certain space along the axial direction A of the display stand 1131. Thus, when fluid flows along the tapered portion 1111 to the display stand 1131, the fluid cannot flow to the top of the display stand 1131 (the end of the display stand 1131 away from the main body 111) and come into contact with the light-transmitting element 15. In other words, the fluid generated during brushing cannot flow to the light-transmitting element 15, thereby reducing the possibility of fluid accumulating on the surface of the light-transmitting element 15, and allowing the user to clearly observe the displayed content of the display screen 17 through the light-transmitting element 15.

[0067] The mechanism 13 is a structure used to drive the electric toothbrush head 30 to vibrate. After the user turns on the electric toothbrush 100, the output shaft 133 of the motor 131 in the mechanism 13 will start to vibrate, and drive the brush head 31 to vibrate through the part connected to the brush head 31, so that the teeth are cleaned by the bristles 31 of the vibrating brush head 31. At this time, the user usually needs to obtain information about the human characteristics of the brush head 31 and the surrounding oral cavity to locate the area of ​​teeth being brushed.

[0068] The light-transmitting element 15 is disposed opposite to the display screen 17. The light-transmitting element 15 can be made of materials such as glass, plastic, or crystal. The light-transmitting element 15 can act as a barrier between the external environment and the interior of the handle housing 11, preventing dust, fluids, or other dirt from entering the interior of the handle housing 11 and protecting the display screen 17 from contamination. The light-transmitting element 15 can also have certain optical properties, allowing light emitted from the display screen 17 to pass through the light-transmitting element 15 and reach the outside of the handle housing 11 when the display screen 17 is working, and be received by the human eye. There can be one or multiple light-transmitting elements 15. In the embodiments of this application, there is one light-transmitting element 15. In embodiments where there are multiple light-transmitting elements 15, the size, shape, or light transmittance of the multiple light-transmitting elements 15 can be different or the same. Furthermore, the light-transmitting element 15 can be coated with coatings of different optical properties, such as anti-reflective coatings to improve light transmittance, anti-reflective coatings to reduce stray reflections, filter coatings to filter light of specific wavelengths, and anti-fog coatings to prevent fogging.

[0069] The display screen 17 emits light, which passes through the light-transmitting element 15 and is projected onto the outside of the handle housing 11, thereby providing the user with the necessary display information. The display screen 17 consists of multiple light-emitting elements, which can combine different colors and brightness levels to form display information. The information carried in the light emitted by the display screen 17 includes, but is not limited to, brushing time elapsed, remaining brushing time, the amount of plaque detected, and remaining battery power. This display information helps users monitor their brushing progress in real time, thereby promoting oral health management.

[0070] In the brush handle 10 of this application embodiment, the display platform 1131 protrudes in a direction away from the main body 111. A portion of the display platform 1131 and the tapered portion 1111 are spaced apart and opposite each other in the axial direction A of the display platform 1131, and the light-transmitting element 15 is installed on the display platform 1131. In this way, the fluid generated by the user when brushing teeth is difficult to flow onto the light-transmitting element 15, reducing the possibility of fluid accumulating on the surface of the light-transmitting element 15, so that the user can clearly observe the display content of the display screen 17 through the light-transmitting element 15.

[0071] In addition, the output shaft 131 of the mechanism 13 extends from the first end 11111 of the tapered section 1111, and the portion of the display platform 1131 is spaced apart from the tapered section 1111 in the axial direction A of the display platform 1131. Thus, the display section 113 is positioned closer to the electric toothbrush head 30 on the brush handle 10, making it easier for the user to observe the content of the display screen 17 while using the electric toothbrush 100.

[0072] The brush handle 10 will be further explained below with reference to the attached drawings.

[0073] Please see Figures 1 to 3 ,or Figures 4 to 7 ,or Figures 8 to 11 In some embodiments, the output shaft 133 of the mechanism 13 is used to mount the electric toothbrush head 30, and in the axial direction X of the brush handle 10, the display portion 113 is further away from the electric toothbrush head 30 than the first end 11111 of the tapered portion 1111.

[0074] Specifically, during the operation of the motor 131, the motor 131 can drive the electric toothbrush head 30 to vibrate at a high frequency. Therefore, the foam on the electric toothbrush head 30 may splash due to the vibration. At this time, if the first end 11111 of the display section 113 is closer to the electric toothbrush head 30 than the first end 11111 of the tapered section 1111, the foam will more easily splash onto the display section 113, thereby blocking the light-transmitting element 15 and affecting the user's observation of the display content of the display screen 17 through the light-transmitting element 15. In this embodiment, the display section 113 is further away from the electric toothbrush head 30 than the first end 11111 of the tapered section 1111. That is, in the axial direction X of the handle 10, the display section 113 does not exceed the end of the tapered section 1111 near the brush head 31 (i.e., the first end 11111 of the tapered section 1111). This reduces the possibility of foam splashing onto the display section 113, prevents the foam from blocking the light-transmitting element 15, and ensures that the user can observe the display content of the display screen 17 through the light-transmitting element 15. On the other hand, it prevents the display section 113 from interfering with the installation of the electric toothbrush head 30, ensuring the normal assembly of the electric toothbrush head 30 on the handle 10.

[0075] Please see Figure 2 and Figure 3 ,or Figure 5 and Figure 6 ,or Figure 9 and Figure 10 In some embodiments, at least a portion of the display platform 1131 that protrudes from the body portion 111 together with the tapered portion 1111 forms a guide groove 115, which is used to guide fluid along the display platform 1131 toward the side away from the light-transmitting element 15.

[0076] Specifically, as can be seen from the above, the portion of the display platform 1131 and the tapered portion 1111 are spaced apart and opposite each other in the axial direction A of the display platform 1131. Thus, the portion of the display platform 1131 and the tapered portion 1111 have a certain space in the axial direction A of the display platform 1131. At this time, the portion of the display platform 1131 is one side wall of the guide channel 115, and the tapered portion 1111 is the other side wall of the guide channel 115. The portion of the display platform 1131 and the tapered portion 1111 are connected at the connection between the main body 111 and the display platform 1131, thereby forming the guide channel 115.

[0077] The guide channel 115 is used to guide the flow of fluid. During brushing, fluid (such as toothpaste foam and water) from the electric toothbrush head 30 flows to the handle 10. It is understood that fluid tends to flow along the path of least resistance. Therefore, after the fluid reaches the guide channel 115, the display platform 1131 obstructs the flow. However, the sides of the display platform 1131 (which can be the opposite sides of the display platform 1131 in the width direction of the handle 10, where the width direction of the handle 10 is perpendicular to both the axial direction X of the handle 10 and the axial direction A of the display platform 1131) do not obstruct the flow. Therefore, the fluid tends to flow laterally towards the display platform 1131. That is, under the guidance of the guide channel 115, the fluid can flow along the display platform 1131 in a direction away from the light-transmitting element 15. This prevents the fluid generated during brushing from flowing towards the light-transmitting element 15, thereby reducing the possibility of fluid accumulation on the surface of the light-transmitting element 15, allowing the user to clearly observe the content of the display screen 17 through the light-transmitting element 15. In addition, the guide channel 115 can also block splashed foam, prevent foam from blocking the light-transmitting element 15, and ensure that the user can observe the display content of the display screen 17 through the light-transmitting element 15.

[0078] Please see Figure 2 and Figure 3 ,or Figure 5 and Figure 6 ,or Figure 9 and Figure 10In some embodiments, the display platform 1131 includes an outer peripheral surface protruding relative to the body portion 111. The body portion 111 includes an outer peripheral surface, and the outer peripheral surface of the display platform 1131 is connected to and opposite to the outer peripheral surface of the body portion 111, forming a guide groove 115. The outer peripheral surface of the display platform 1131 is inclined relative to the axis of the display platform 1131, and the slope is greater than or equal to 0.5. It should be noted that in some embodiments, the slope can be any one of the values ​​greater than or equal to 0.5, such as 0.5, 0.55, 0.61, 0.67, 0.71, 0.75, 0.84, 0.85, 0.91, and 0.98, or any value between any two values ​​greater than or equal to 0.5.

[0079] If the slope is less than 0.5, after the fluid flows to the guide channel 115, the tilt angle between the part of the display platform 1131 near the electric toothbrush head 30 and the body 111 is small. That is, the resistance to the fluid flow is small, and the fluid easily flows from the outer peripheral surface of the body 111 to the outer peripheral surface of the display platform 1131, and then to the outer surface 151 of the light-transmitting element 15. However, in some embodiments of this application, the slope is greater than or equal to 0.5. After the fluid flows to the guide channel 115, the tilt angle between the part of the display platform 1131 near the electric toothbrush head 30 and the body 111 is large. That is, the resistance to the fluid flow is large, and the fluid does not easily flow to the outer surface 151 of the light-transmitting element 15, thus ensuring the light transmission effect of the light-transmitting element 15 on the display screen 17.

[0080] Please continue reading. Figure 2 and Figure 3 ,or Figure 5 and Figure 6 ,or Figure 9 and Figure 10 In some embodiments, the brush handle 10 includes a first end 101 and a second end 102 opposite to each other. The output shaft 133 of the mechanism 13 extends from the first end 101 of the brush handle 10, and the outer surface 151 of the light-transmitting element 15 is inclined relative to the axial direction X of the brush handle 10. In the direction from the first end 101 to the second end 102 of the brush handle 10, the distance between the outer surface 151 of the light-transmitting element 15 and the axis of the brush handle 10 gradually increases.

[0081] Specifically, the mechanism 13 is housed inside the handle housing 11, and the output shaft 133 of the mechanism 13 extends from the first end 101 of the brush handle 10 and is connected to the electric toothbrush head 30. Thus, the electric toothbrush head 30 can achieve high-frequency vibration under the drive of the mechanism 13 to clean teeth. Specifically, when the outer surface 151 of the light-transmitting element 15 is parallel to the axial direction X of the brush handle 10, that is, when the normal line of the light-transmitting element 15 (the line perpendicular to the outer surface 151 of the light-transmitting element 15) forms a 90-degree angle with the axial direction X of the brush handle 10, the light-transmitting element 15 is in a horizontal state; when the normal line of the light-transmitting element 15 forms a non-90-degree angle with the axial direction X of the brush handle 10, the light-transmitting element 15 is in an inclined state, that is, the outer surface 151 of the light-transmitting element 15 is inclined relative to the axial direction X of the brush handle 10.

[0082] The distance between the outer surface 151 of the light-transmitting element 15 and the axis of the brush handle 10 gradually increases. That is, the outer surface 151 of the light-transmitting element 15 is more towards the end of the electric toothbrush 100 where the electric toothbrush head 30 is located. As a result, when the user uses the electric toothbrush 100, the light-transmitting element 15 can better adapt to the user's line of sight when brushing their teeth, ensuring that the light from the display screen 17 can pass through the light-transmitting element 15 more effectively and be transmitted in the direction of the user's line of sight, thereby making it easier for the user to observe the information displayed on the display screen 17.

[0083] In other embodiments, the distance between the outer surface 151 of the light-transmitting element 15 and the axis of the brush handle 10 gradually decreases in the direction from the first end 101 to the second end 102 of the brush handle 10.

[0084] Specifically, the distance between the outer surface 151 of the light-transmitting element 15 and the axis of the brush handle 10 gradually decreases, that is, the outer surface 151 of the light-transmitting element 15 is more towards the end of the electric toothbrush 100 away from the electric toothbrush head 30. As a result, foam or liquid on the electric toothbrush head 30 is less likely to splash onto the outer surface 151 of the light-transmitting element 15, which helps to keep the light-transmitting element 15 clean and ensures that the information displayed on the display screen 17 is clearly visible.

[0085] In some embodiments, the brush handle 10 also includes a control key 90. The control key 90 is disposed on the light-transmitting element 15 and is located on the side of the light-transmitting element 15 further away from the first end 11111 of the tapered portion 1111.

[0086] Specifically, the control key 90 is a component for user interaction with the electric toothbrush 100, and it is electrically connected to the circuit board in the mechanism 13. When the user operates the control key 90, the circuit board transmits control signals to the motor 131, which responds to the control signals and performs corresponding functions, such as start, stop, and mode switching. There can be one or more control keys 90. In one embodiment, the control key 90 can be a protrusion or recess on the light-transmitting element 15, which the user can trigger by pressing or other means to activate different functions of the electric toothbrush 100. In another embodiment, the control key 90 is a touchscreen; that is, the control key 90 is an area on the outer surface 151 of the light-transmitting element 15, and the user triggers the control key 90 by touching the area on the outer surface 151 of the light-transmitting element 15. The control button 90 is located on the side of the light-transmitting member 15 further away from the first end 11111 of the tapered portion 1111. That is, when the user is using the electric toothbrush 100, the control button 90 is located on the side of the light-transmitting member 15 closer to the user's hand, which facilitates the user's operation of the control button 90. In addition, since the display stand 1131 protrudes away from the body portion 111, fluid is less likely to flow towards or splash onto the control button 90, keeping the control button 90 clean and ensuring normal use of the electric toothbrush 100 by the user.

[0087] In some embodiments, the hardness of the light-transmitting element 15 is greater than the hardness of the display stand 1131.

[0088] Specifically, when the electric toothbrush 100 is dropped or impacted, the light-transmitting component 15, with its high hardness, possesses sufficient strength. Under external forces, the light-transmitting component 15 can effectively resist these forces, preventing structural damage and extending its service life. The high hardness of the light-transmitting component 15 also serves to support the display platform 1131, preventing deformation and ensuring the assembly accuracy between the light-transmitting component 15 and the display platform 1131.

[0089] In some embodiments, the display stand 1131 is made of plastic, and the light-transmitting element 15 is made of light-transmitting glass or light-transmitting plastic.

[0090] Specifically, the display stand 1131 is made of plastic, which provides it with a certain degree of elasticity. In the event of a fall from the electric toothbrush 100 and a collision with the ground, the display stand 1131 can act as a buffer, reducing the likelihood of damage to the light-transmitting component 15 and extending its lifespan. Furthermore, the light-transmitting glass has a high light transmittance, ensuring that the light-transmitting component 15 effectively transmits light and guarantees clear visibility of the displayed information. The lightweight nature of the light-transmitting plastic component 15 also reduces the weight of the electric toothbrush 100.

[0091] Please see Figures 5 to 7 ,or Figures 9 to 11 In some embodiments, the display stand 1131 includes a connecting end 11311 and an open end 11312. The connecting end 11311 is connected to the main body 111, and the open end 11312 protrudes in a direction away from the main body 111. The open end 11312 is provided with a mounting opening, and the light-transmitting element 15 is mounted in the mounting opening.

[0092] The open end 11312 protrudes away from the main body 111 and has a mounting opening, and the light-transmitting element 15 is mounted in the mounting opening, so that the light-transmitting element 15 can be fixed on the display stand 1131. When the electric toothbrush 100 is dropped or collided, the open end 11312 can absorb part of the impact force, protect the light-transmitting element 15, and prevent the light-transmitting element 15 from breaking due to external impact force.

[0093] In some embodiments, the light-transmitting element 15 is connected to the open end 11312 and exposed to the outside of the display platform 1131. Specifically, the light-transmitting element 15 is mounted on the open end 11312 and exposed to the outside of the display platform 1131, making the light-transmitting element 15 easier to install and remove.

[0094] Please see Figure 6 or Figure 10 In some embodiments, the display stand 1131 includes an outer peripheral surface that protrudes relative to the body portion 111, and the outer peripheral surface of the display stand 1131 is provided with a protrusion that protrudes relative to the light-transmitting member 15 toward the electric toothbrush head 30.

[0095] Specifically, in some embodiments, the protrusion may be spaced apart from the tapered portion 1111 along the axial direction A of the display platform 1131, and the protrusion participates in forming a sidewall of the flow guide 115. When fluid (e.g., toothpaste foam and water) flows into the flow guide 115, the protrusion can obstruct the flow of fluid, preventing the fluid from flowing along the outer peripheral surface of the display platform 1131 onto the light-transmitting element 15 and thus blocking it. This ensures that the user can observe the displayed content of the display screen 17 through the light-transmitting element 15.

[0096] Please see Figure 2 and Figure 3 ,or Figure 5 and Figure 6 ,or Figure 9 and Figure 10 In some embodiments, the connection between the outer peripheral surface of the display platform 1131 and the outer peripheral surface of the body 111 is a smooth concave transition, and the curvature of the concave curve gradually increases.

[0097] Specifically, the concave shape refers to the arc-shaped structure formed at the connection between the outer peripheral surface of the display platform 1131 and the outer peripheral surface of the main body 111, curving inwards towards the interior of the main body 111. This smooth concave transition avoids dead angles at the connection, preventing dirt accumulation and facilitating cleaning. The gradually increasing curvature of the concave curve impedes water flow from the outer peripheral surface of the main body 111 to the outer peripheral surface of the display platform 1131, reducing the possibility of water accumulation on the surface of the light-transmitting element 15 and ensuring that the user can clearly see the content of the display screen 17 through the light-transmitting element 15.

[0098] Please see Figure 5 , Figure 6 and Figure 7 ,or Figure 9 , Figure 10 and Figure 11 In some embodiments, the display stand 1131 is provided with a mounting cavity 11313, and the display screen 17 is housed in the mounting cavity 11313.

[0099] Specifically, the display platform 1131 protrudes away from the main body 111, thereby forming a mounting cavity 11313, which communicates with the space inside the main body 111. On one hand, the mounting cavity 11313 provides a space for the display screen 17, reducing interference from the external environment. On the other hand, with the display screen 17 housed in the mounting cavity 11313, it is less likely to be obstructed by the display platform 1131 compared to when it is located inside the main body 111, thus reducing the distance between the display screen 17 and the light-transmitting element 15 and facilitating user observation. Furthermore, with the mechanism 13 housed inside the main body 111 and the display screen 17 housed in the mounting cavity 11313, the display screen 17 does not occupy space inside the main body 111, thereby reducing the size of the main body 111 and making it easier for the user to hold. On the other hand, when the electric toothbrush 100 is working, the motor 13 and the display screen 17 are housed in different spaces and kept at a certain distance. This can prevent the display information from becoming blurry due to the vibration of the motor 13, and can also prevent the display screen 17 from shifting due to vibration, thereby improving the service life of the display screen 17.

[0100] In some embodiments, the display stand 1131 and the main body 111 are integrally formed. That is, the display stand 1131 and the main body 111 are a single structure, which can improve the bonding strength between the display stand 1131 and the main body 111, prevent the display stand 1131 and the main body 111 from separating during the operation of the electric toothbrush 100, and thus ensure the stability and reliability of the electric toothbrush 100.

[0101] In other embodiments, the display stand 1131 and the body part 111 are separately formed, that is, the display stand 1131 and the body part 111 are two different structures. In one example, the display stand 1131 and the body part 111 and / or the mechanism 13 can be joined together by a detachable connection method, including but not limited to screw connections, snap-fit ​​connections, or threaded connections. In another example, the display stand 1131 and the body part 111 and / or the mechanism 13 can be joined together by a non-detachable connection method, including but not limited to adhesive or welding. Separate forming facilitates disassembly and replacement of the display stand 1131 and the body part 111.

[0102] In some embodiments, the display stand 1131 and the main body 111 are formed separately, and a sealing member 71 is provided between the display stand 1131 and the main body 111.

[0103] The seal 71 can be made of various materials such as rubber, silicone, and polypropylene. There can be one or more seals 71, which is not limited in this application. The seal 71 can be molded separately and then fitted onto the display stand 1131 or the body 111, or it can be fitted onto the display stand 1131 or the body 111 in a form such as overmolding. The seal 71 can seal the gap between the outer peripheral surface of the display stand 1131 and the body 111, preventing fluid from flowing into the body 111 through this gap, thus improving the waterproofness of the electric toothbrush 100. Furthermore, the seal 71 is low in cost and does not occupy additional installation space.

[0104] In some embodiments, the outer contour of the display platform 1131 projected onto the projection plane in the axial direction X of the brush handle 10 is larger than the outer contour of the main body 111. Therefore, the display platform 1131 is larger than the main body 111, allowing for a larger design size of the light-transmitting element 15 and the display screen 17, thus facilitating user observation of the displayed content through the light-transmitting element 17.

[0105] In addition, in some embodiments, the extension direction of the bristles 31 is approximately the same as the axial direction A of the display platform 1131. Thus, when the electric toothbrush 100 is placed on a structure with a resting surface, such as a table, and both the outer peripheral surface of the body 111 and the outer peripheral surface of the display platform 1131 are in contact with the resting surface, the extension direction of the bristles 31 has a certain angle with the plane where the resting surface is located. That is, when the electric toothbrush 100 is placed on a structure with a resting surface, such as a table, the bristles 31 will not come into contact with the resting surface, thereby preventing the bristles 31 from being contaminated.

[0106] Please continue reading. Figures 5 to 7 ,or Figures 9 to 11 In some embodiments, the display platform 1131 includes an extension 11315, the extension 11315 includes an open end 11312, and a light-transmitting element 15 is installed on the open end 11312. In the axial direction A of the display platform 1131, the cross-sectional area of ​​the outer peripheral surface of the extension 11315 gradually increases.

[0107] Specifically, the extension 11315 is the portion of the display platform 1131 that extends from the connection point away from the main body 111. The cross-sectional shape of the extension 11315 includes, but is not limited to, a perfect circle, an ellipse, or a polygon. The material of the extension 11315 includes, but is not limited to, plastic, silicone, or metal. When the extension 11315 is made of plastic, it is lightweight, low-cost, and easy to process. When the extension 11315 is made of silicone, it is soft, elastic, and will not harm oral tissues. When the extension 11315 is made of metal, it has high strength, a long service life, and is easy to clean and maintain. The extension 11315 provides sufficient installation space for the light-transmitting element 15. When the display screen 17 is installed on the display unit 113, the extension 11315 provides sufficient installation space for both the light-transmitting element 15 and the display screen 17. The open end 11312 is located at the end of the extension 11315 away from the main body 111 and is used to mount the light-transmitting element 15. Light can be transmitted from the open end 11312 to the outside of the handle housing 11. The cross-sectional shape of the open end 11312 includes, but is not limited to, a perfect circle, an ellipse, or a polygon. It is understood that the cross-sectional shape of the open end 11312 matches the cross-sectional shape of the light-transmitting element 15, thereby allowing the open end 11312 and the light-transmitting element 15 to fit tightly together, preventing external dust or moisture from entering the display stand 1131.

[0108] The cross-sectional area of ​​the outer peripheral surface of the extension 11315 gradually increases. On the one hand, this expands the light emission angle, allowing the light to be evenly distributed on the surface of the light-transmitting element 15, preventing excessively strong or dark local brightness on the surface of the light-transmitting element 15, and improving the display effect of the display screen 17. On the other hand, the gradually increasing cross-sectional area of ​​the extension 11315 allows the extension 11315 to have a certain tilt angle relative to the main body 111, thereby forming a barrier in the fluid flow path, guiding the fluid to flow in the guide groove 115, preventing the fluid from flowing directly from the outer peripheral surface of the extension 11315 to the light-transmitting element 15, thus ensuring the clarity of the light-transmitting element 15, and ensuring that the user can clearly see the display content of the display screen 17 through the light-transmitting element 15.

[0109] In some embodiments, the angle between the outer peripheral surface of the extension 11315 and the outer peripheral surface of the body 111 is greater than or equal to 30° and less than or equal to 90°.

[0110] Specifically, the angle between the outer peripheral surface of the extension 11315 and the outer peripheral surface of the main body 111 refers to the angle formed at the intersection of the outer peripheral surfaces of the extension 11315 and the main body 111, that is, the relative inclination between the extension 11315 and the main body 111. The angle between the extension 11315 and the main body 111 can be any one of 30°, 35°, 40°, 43°, 54°, 57°, 67°, 78°, 84° or 90°, or any value between any two of these values.

[0111] If the angle between the outer peripheral surface of the extension 11315 and the outer peripheral surface of the main body 111 is less than 30°, the distance between the outer peripheral surfaces of the extension 11315 and the main body 111 will be too close, limiting the capacity and depth of the flow channel 115, making it difficult for water to flow along the flow channel 115. Furthermore, an excessively small angle will also result in the distance between the light-transmitting element 15 and the main body 111 being too close, making it easy for fluid to splash onto the surface of the light-transmitting element 15, affecting the display effect. If the angle between the outer peripheral surface of the extension 11315 and the outer peripheral surface of the main body 111 is greater than 90°, the connection between the outer peripheral surfaces of the extension 11315 and the main body 111 will be too gentle, making it easy for fluid to flow from the outer peripheral surface of the main body 111 to the outer peripheral surface of the extension 11315 and accumulate on the surface of the light-transmitting element 15, causing water stains on the surface of the light-transmitting element 15 and affecting the visibility of the displayed content on the display screen 17.

[0112] The angle between the outer peripheral surface of the extension 11315 and the outer peripheral surface of the main body 111 is greater than or equal to 30° and less than or equal to 90°. This allows fluid to flow more easily along the guide groove 115, and prevents fluid from flowing from the outer peripheral surface of the main body 111 to the outer peripheral surface of the extension 11315 and accumulating on the surface of the light-transmitting element 15. This reduces the likelihood of fluid accumulating on the surface of the light-transmitting element 15, helping to maintain the clarity of the light-transmitting element 15 and ensuring that the user can clearly see the content of the display screen 17 through the light-transmitting element 15.

[0113] In some embodiments, the distance between the projected outer contour of the extension 11315 and the projected outer contour of the main body 111 in the projection plane projected in the axial direction X of the brush handle 10 is greater than 2 mm. Specifically, the distance between the projected outer contour of the extension 11315 and the projected outer contour of the main body 111 can be any value greater than 2 mm, such as 2 mm, 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, 11 mm, or 12 mm, or any value between any two values ​​greater than 2 mm.

[0114] If the distance between the outer contour of the projection of the extension 11315 and the outer contour of the projection of the main body 111 is less than 2 mm, the fluid will flow too close from the main body 111 to the light-transmitting element 15, and the fluid will easily flow to the surface of the light-transmitting element 15. If the distance between the outer contour of the projection of the extension 11315 and the outer contour of the projection of the main body 111 is greater than 2 mm, the distance between the fluid and the light-transmitting element 15 can be increased, and the fluid will not easily flow to the surface of the light-transmitting element 15.

[0115] In some embodiments, the connection between the extension 11315 and the main body 111 is chamfered. The chamfered connection allows for a smooth transition between the extension 11315 and the main body 111, avoids the formation of dead corners at the connection, prevents dirt from accumulating, and facilitates cleaning of the connection.

[0116] In the description of this specification, the references to terms such as "some embodiments," "in one example," "exemplarily," etc., indicate that a specific feature, structure, material, or characteristic described in connection with the described embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0117] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A brush handle for an electric toothbrush, characterized in that, include: The handle housing includes a body portion and a display portion mounted on the body portion. The body portion includes a tapered portion and a loading portion that are connected to each other. The display portion includes a display platform that protrudes in a direction away from the body portion. A portion of the display platform and the tapered portion are spaced apart and opposite to each other in the axial direction of the display platform. The movement is disposed inside the handle housing. The tapered portion includes a first end and a second end opposite to each other. The output shaft of the movement extends from the first end of the tapered portion, and the second end of the tapered portion is connected to the loading portion. A light-transmitting element is installed on the display platform; and A display screen is mounted on the display unit and / or the mechanism, and the light emitted by the display screen can pass through the light-transmitting element to the outside of the handle housing.

2. The brush handle according to claim 1, characterized in that, At least a portion of the display platform that protrudes relative to the main body forms a guide groove together with the tapered portion. The guide groove is used to guide fluid along the display platform toward a side away from the light-transmitting element.

3. The brush handle according to claim 2, characterized in that, The display platform includes an outer peripheral surface that protrudes relative to the main body. The main body includes an outer peripheral surface. The outer peripheral surface of the display platform is connected to and opposite to the outer peripheral surface of the main body, forming the flow guide groove. The outer peripheral surface of the display platform is inclined relative to the axis of the display platform, and the slope is greater than or equal to 0.

5.

4. The brush handle according to claim 1, characterized in that, The brush handle includes a first end and a second end, the output shaft of the mechanism extends from the first end of the brush handle, and the outer surface of the light-transmitting element is inclined relative to the axial direction of the brush handle. In the direction from the first end to the second end of the brush handle, the distance between the outer surface of the light-transmitting element and the axis of the brush handle gradually increases; or In the direction from the first end to the second end of the brush handle, the distance between the outer surface of the light-transmitting element and the axis of the brush handle gradually decreases.

5. The brush handle according to claim 1, characterized in that, The display platform includes a connecting end and an open end. The connecting end is connected to the main body, and the open end protrudes in a direction away from the main body and is provided with a mounting port. The light-transmitting element is installed in the mounting port.

6. The brush handle according to claim 1, characterized in that, The display platform includes an outer peripheral surface that protrudes relative to the main body, and the outer peripheral surface of the display platform is provided with a protrusion that protrudes relative to the light-transmitting element toward the electric toothbrush head of the electric toothbrush.

7. The brush handle according to any one of claims 1-5, characterized in that, The connection between the outer peripheral surface of the display platform and the outer peripheral surface of the main body is a smooth concave transition, and the curvature of the concave curve gradually increases.

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

9. The brush handle according to claim 8, characterized in that, The display platform is integrally formed with the main body; or... The display stand and the main body are integrally formed, and the display stand and the main body and / or the mechanism are connected by at least one of the following methods: screw connection, threaded connection, bonding, welding.

10. The brush handle according to claim 8, characterized in that, The display platform and the main body are integrally formed, and a sealing element is provided between the display platform and the main body.

11. The brush handle according to claim 8, characterized in that, In the projection plane projected toward the axis of the brush handle, the outer contour of the projection of the display stand is larger than the outer contour of the projection of the main body.

12. The brush handle according to claim 8, characterized in that, The display platform includes an extension, which has an open end. The light-transmitting element is installed at the open end. In the axial direction of the display platform, the cross-sectional area of ​​the outer peripheral surface of the extension gradually increases.

13. The brush handle according to claim 12, characterized in that, The angle between the outer peripheral surface of the extension and the outer peripheral surface of the main body is greater than or equal to 30° and less than or equal to 90°.

14. The brush handle according to claim 12, characterized in that, In the projection plane projected toward the axis of the brush handle, the distance between the outer contour of the projection of the extension and the outer contour of the projection of the main body is greater than 2 mm.

15. The brush handle according to claim 12, characterized in that, The connection between the extension and the main body is chamfered.

16. An electric toothbrush, characterized in that, include: The brush handle according to any one of claims 1-15, and An electric toothbrush head, which is mounted on the brush handle.

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