Electric toothbrush

Abstract

The utility model discloses an electric toothbrush, an electric toothbrush handle and a brush head, the handle comprises a shell and an output shaft, the outer surface of the handle comprises a first butt joint surface, and the output shaft extends out of the first butt joint surface from the interior of the shell; the brush head is detachably mounted on the output shaft; at least one of the brush head and the handle is provided with a light source and a light reflecting part facing the light source, the light reflecting part and the light source are arranged at an interval, the light source is configured to project at least part of light to the light reflecting part, and the light reflecting part reflects the light projected by the light source. And the light is emitted out of the electric toothbrush from an area between the reflecting part and the light source. Light is reflected through the light reflecting part and is emitted from the side face of the electric toothbrush to prompt a user, the light reflecting part and the light emitting part of the light source can be directly located on the surface layer of the structural part, the light reflecting part and the light source can also be packaged in the structural part of the electric toothbrush, and meanwhile smooth transition of the surface of the electric toothbrush is facilitated. Cleaning dead corners are prevented from containing dirt.

Description

Technical Field

[0001] The present application relates to the field of personal care technology, and in particular to an electric toothbrush. Background Art

[0002] As people prioritize oral health and personalized care, electric toothbrush design continues to evolve, incorporating more intelligent and user-friendly elements. The indicator light, a visual feedback tool, plays a crucial role in electric toothbrushes. In related art, the indicator light and handle barrel are typically separate structures, allowing dirt and grime to accumulate between them during use. Furthermore, in humid bathroom environments, long-term use can lead to a loose seal, allowing moisture to penetrate, impacting light performance, and even causing electronic component failure. Utility Model Content

[0003] An embodiment of the present application provides an electric toothbrush that can solve the problem of improper installation of the warning light of the electric toothbrush affecting its use.

[0004] The present application provides an electric toothbrush, comprising:

[0005] A handle comprising a housing and an output shaft, wherein an outer surface of the handle comprises a first docking surface, and the output shaft extends from the interior of the housing to the first docking surface; and

[0006] a brush head, detachably mounted on the output shaft;

[0007] Wherein, at least one of the brush head and the handle has a light source, and at least one of the brush head and the handle has a reflective portion facing the light source, the reflective portion is spaced apart from the light source, and the light source is configured to project at least part of the light onto the reflective portion, the reflective portion reflects the light projected by the light source, and emits the electric toothbrush from the area between the reflective portion and the light source.

[0008] The electric toothbrush according to the embodiment of the present application reflects light through the reflective part and emits it from the side of the electric toothbrush to prompt the user, thereby preventing the light emitted by the light source from being projected directly into the user's eyes and causing irritation. By adopting the method of reflecting light by the reflective part, the reflective part and the light emitting part of the light source can be directly on the surface of the structural part, or the reflective part and the light source can be encapsulated inside the structural part of the electric toothbrush. As long as an area for light to pass through is reserved between the reflective part and the light source, it is convenient to carry out a sealing design to prevent water seepage. At the same time, it is also convenient to make a smooth transition on the surface of the electric toothbrush to prevent the existence of cleaning dead corners to accommodate dirt. During assembly, the brush head is installed on the output shaft, and the reflective part and the light source can be directly aligned. The reflective part can smoothly receive and transmit light, and the light output structure is simple.

[0009] In some embodiments, the handle comprises the light source, the housing comprises a docking channel, the light source is disposed in the docking channel, and the outer surface of the light source comprises the first docking surface; the brush head comprises the reflective portion, and the reflective portion is disposed toward the first docking surface. Based on the above embodiment, light emitted by the light source can be directly projected onto the brush head, shortening the optical path and thereby reducing light loss.

[0010] In some embodiments, the docking channel has a docking port facing the reflective portion; the first docking surface and the docking port are coplanar; or, the portion of the light source having the first docking surface extends out of the docking port; or, the first docking surface is within the docking channel, and the portion of the housing defining the docking channel includes reflective material. Based on the above embodiments, the light source can be installed in a variety of positions relative to the docking port to flexibly adjust the position of the light source relative to the housing.

[0011] In some embodiments, the surface of the reflective portion facing the first docking surface forms a second docking surface; or, the brush head has a first light-transmitting layer, the first light-transmitting layer is provided on the surface of the reflective portion facing the first docking surface, and is integrally formed with the reflective portion, and the surface of the first light-transmitting layer facing the first docking surface forms a second docking surface; along the extension direction of the output shaft, the second docking surface is arranged opposite to the first docking surface, and the second docking surface covers the first docking surface. Based on the above embodiments, the second docking surface of the brush head can more comprehensively receive light from the light source to prevent light leakage, and at the same time, facilitate a smooth transition at the connection between the brush head and the handle, preventing the presence of concave and convex structures on the outer surface of the electric toothbrush that easily accumulate dirt or cause bumps.

[0012] In some embodiments, the housing has a docking portion comprising a second light-transmitting layer and a light-reflecting portion stacked along the extension direction of the output shaft, with the surface of the light-reflecting portion facing away from the second light-transmitting layer forming the first docking surface. The handle has a light source disposed on a side of the light-reflecting portion facing away from the first docking surface and emitting light toward the light-reflecting portion. Based on the above embodiment, the docking portion provides protection for the light source, allowing it to be concealed and installed, facilitating a sealed and waterproof design.

[0013] In some embodiments, the second light-transmitting layer and the light-reflecting portion form a light-emitting cavity, a portion of the light source extends into the light-emitting cavity, and light emitted by the light source is directly projected onto the light-reflecting portion; alternatively, the light source is located on a side of the second light-transmitting layer facing away from the light-reflecting portion, and light emitted by the light source passes through the second light-transmitting layer and is projected onto the light-reflecting portion. Based on the above embodiments, the second light-transmitting layer and the light-reflecting portion jointly provide protection for the light source, and light is emitted smoothly from the second light-transmitting layer.

[0014] In some embodiments, the brush head includes an optical brush shaft having a light-transmitting outer surface; the reflective portion defines a light-transmitting area, and the light source is configured such that a portion of the light passes through the light-transmitting area to enter the interior of the optical brush shaft and is emitted from the light-transmitting outer surface. Based on the above embodiment, the light source is disposed on the handle and emits light toward one side of the brush head. In addition to a portion of the light being reflected by the reflective portion, another portion of the light is able to pass toward the side away from the handle and enter the optical brush shaft. The optical brush shaft has a larger light-emitting area, resulting in a better light-emitting prompt effect.

[0015] In some embodiments, the brush head includes a light source; the brush head includes the reflective portion, and the reflective portion is located on the side of the light source facing the handle; or, the brush head includes the reflective portion, and the reflective portion is located on the side of the light source facing away from the handle; or, the portion of the handle facing the light source forms the reflective portion. Based on the above embodiments, the light source is provided on the brush head, which enables the light source to be encapsulated inside the brush head, making it easier to position the reflective portion relative to the light source, so that the reflective portion can more comprehensively receive light emitted by the light source, thereby better preventing light leakage.

[0016] In some embodiments, the brush head includes an optical brush rod, the optical brush rod having a light-transmitting outer surface, and the light source is disposed on the optical brush rod; wherein, one of the light source and the reflective portion, which is away from the handle, has a light-transmitting area, and part of the light between the light source and the reflective portion passes through the light-transmitting area and enters the portion of the optical brush rod away from the handle, so as to be emitted from the optical brush rod from the light-transmitting outer surface. Based on the above embodiment, the light source is disposed on the brush head and emits light toward the reflective portion. In addition to being able to reach the reflective portion, the light emitted by the light source can also be transmitted to the side away from the handle and enter the optical brush rod. The optical brush rod has a larger light-emitting area, and the light-emitting prompt effect is better.

[0017] In some embodiments, the optical brush bar includes a light-transmitting body and an optical pattern portion, the optical pattern portion is disposed inside the light-transmitting body and is located on the side of the reflective portion away from the handle, and the light-transmitting body has the light-transmitting outer surface; the optical pattern portion includes a light-guiding material, and a portion of the light entering the optical brush bar is transmitted through the optical pattern portion to exit the optical brush bar from the light-transmitting outer surface; and / or the optical pattern portion includes a reflective material, and a portion of the light entering the optical brush bar is reflected through the optical pattern portion to exit the optical brush bar from the light-transmitting outer surface. Based on the above embodiments, the shape of the optical pattern portion is designed to enrich the light-emitting effect of the optical brush bar.

[0018] In some embodiments, the brush head includes an optical layer disposed within the optical brush holder, the optical layer defining the buffer hole, the output shaft passing through the light-transmitting area and plugged into the buffer hole; the optical layer includes a light-guiding material, and a portion of light passing through the light-transmitting area is conducted through the optical layer into the optical brush holder; and / or the optical layer includes a reflective material, and a portion of light passing through the light-transmitting area is reflected through the optical layer into the optical brush holder. Based on the above embodiments, the optical layer can also present a pattern, further enriching the light-emitting effect of the optical brush holder.

[0019] In some embodiments, the light source includes a plurality of lamp beads, the plurality of lamp beads are arranged on the same plane parallel to the first docking surface, and the plurality of lamp beads are arranged around the output axis. Based on the above embodiment, the light emitted by the light source is made more uniform, and the overall structure of the light source is made more compact.

[0020] In some embodiments, the light source is configured so that at least some of the lamp beads emit light simultaneously; and / or the light source is configured so that each lamp bead emits light in a cycle according to a preset period; and / or the light source is configured so that at least two of the plurality of lamp beads emit light of different wavelengths; and / or the light source is configured so that at least two of the plurality of lamp beads emit light of different brightness levels. Based on the above embodiments, the lighting status of the electric toothbrush can be enriched, thereby providing rich prompt information.

[0021] In some embodiments, the brush head includes a cleaning portion, and the electric toothbrush includes a pressure sensor configured to sense pressure acting on the cleaning portion and generate a pressure signal to control the light state of the light source based on the pressure signal. Based on the above embodiment, the light state of the electric toothbrush can be used to inform the user, thereby encouraging the user to develop a good brushing habit.

[0022] In some embodiments, the electric toothbrush includes a near-field sensing device for sensing the installation status of the brush head on the output shaft and generating a near-field signal to control the light state of the light source based on the near-field signal. Based on the above embodiment, the light state of the electric toothbrush can indicate to the user whether the brush head is properly installed. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 This is a schematic diagram of the three-dimensional structure of an electric toothbrush according to an embodiment of the present application;

[0025] Figure 2 This is a schematic cross-sectional view of an electric toothbrush according to an embodiment of the present application;

[0026] Figure 3 This is a partial cross-sectional structural diagram of an embodiment of the present application in which the handle has a light source and the brush head has a reflective portion;

[0027] Figure 4 This is a schematic diagram of a partial cross-sectional structure of a brush head having a first light-transmitting layer according to an embodiment of the present application;

[0028] Figure 5 This is a partial cross-sectional structural diagram of a first docking surface extending out of a docking port according to an embodiment of the present application;

[0029] Figure 6 This is a partial cross-sectional structural diagram of an embodiment of the present application, in which the first docking surface is located within the docking channel;

[0030] Figure 7 This is a partial cross-sectional structural diagram of an embodiment of the present application in which a light source is disposed on the side of the second light-transmitting layer facing away from the brush head;

[0031] Figure 8 This is a schematic diagram of a partial cross-sectional structure of a docking portion including a reflective portion and a second light-transmitting layer according to an embodiment of the present application;

[0032] Figure 9 This is a schematic diagram of a partial cross-sectional structure of another embodiment of the present application, in which the docking portion includes a reflective portion and a second light-transmitting layer;

[0033] Figure 10 This is a schematic diagram of a partial cross-sectional structure of a brush head including a light source and a reflective portion according to an embodiment of the present application;

[0034] Figure 11 This is a partial cross-sectional structural diagram of a brush head including a light source and a reflective portion according to another embodiment of the present application;

[0035] Figure 12 This is a partial cross-sectional structural schematic diagram of an embodiment of the present application in which a brush head includes a light source and a handle includes a reflective portion.

[0036] Reference numerals:

[0037] 10. Electric toothbrush;

[0038] 100, handle; 110, housing; 111, docking portion; 112, handheld portion; 101, first docking surface; 102, docking channel; 103, docking port; 120, output shaft; 130, drive assembly;

[0039] 200, brush head; 201, second docking surface; 210, optical brush rod; 203, light-transmitting outer surface; 211, light-transmitting body; 212, optical pattern portion; 213, optical layer; 202, buffer hole; 220, cleaning portion;

[0040] 300, reflective portion;

[0041] 400, light source; 510, first light-transmitting layer; 520, second light-transmitting layer;

[0042] G. Extension direction. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solutions and advantages of this application more clearly understood, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0044] The indicator light and handle are usually separate structures. During use, dirt and grime can easily accumulate between the indicator light and the handle. Furthermore, in a humid bathroom environment, long-term use may lead to a loose seal, which can cause moisture to penetrate, affecting the performance of the light and even causing electronic component failure. Based on this, embodiments of the present application provide an electric toothbrush.

[0045] like Figure 1 and Figure 2 As shown, it is a structural schematic diagram of an electric toothbrush 10 according to an embodiment of the present application. The electric toothbrush 10 includes a handle 100 and a brush head 200. The handle 100 includes a shell 110 and an output shaft 120. The outer surface of the handle 100 includes a first docking surface 101. The output shaft 120 extends from the inside of the shell 110 to the first docking surface 101. One end of the brush head 200 is detachably mounted on the handle 100. The other end of the brush head 200 has a cleaning portion 220. The brush head 200 is used to extend into the user's mouth so that the cleaning portion 220 acts on the part of the human body to be cleaned.

[0046] Among them, at least one of the brush head 200 and the handle 100 has a light source 400, and at least one of the brush head 200 and the handle 100 has a reflecting part 300 facing the light source 400, the reflecting part 300 is arranged at an interval from the light source 400, and the light source 400 is configured to project at least part of the light onto the reflecting part 300, the reflecting part 300 reflects the light projected by the light source 400, and emits the electric toothbrush 10 from the area between the reflecting part 300 and the light source 400.

[0047] The embodiment of the present application uses the reflective portion 300 to reflect light and emit it from the side of the electric toothbrush 10 to prompt the user, thereby preventing the light emitted by the light source 400 from being directly projected into the user's eyes and causing irritation. By adopting the method of using the reflective portion 300 to reflect light, the light-emitting parts of the reflective portion 300 and the light source 400 can be directly on the surface of the structural member, or the reflective portion 300 and the light source 400 can be encapsulated inside the structural member of the electric toothbrush 10. As long as an area for light to pass through is reserved between the reflective portion 300 and the light source 400, it is convenient to carry out a sealing design to prevent water seepage. At the same time, it is also convenient to make a smooth transition on the surface of the electric toothbrush 10 to prevent the existence of cleaning dead corners to accommodate dirt. During assembly, the brush head 200 is installed on the output shaft 120, and the reflective portion 300 and the light source 400 can be directly aligned. The reflective portion 300 can smoothly receive and transmit light, and the light-emitting structure is simple.

[0048] like Figure 2 As shown, the housing 110 has a handheld portion 112, and the handheld portion 112 has an accommodating space inside. The electric toothbrush 10 also includes a drive assembly 130, which is arranged in the accommodating space. The drive assembly 130 is connected to the output shaft 120. The output shaft 120 extends from the drive assembly 130 to the housing 110 to connect with the brush head 200. The drive assembly 130 is used to drive the output shaft 120 to move so that the cleaning portion 220 of the brush head 200 acts on the user's to-be-cleaned portion 220. In the embodiment of the present application, the handheld portion 112 includes a light-shielding material to shield the structural components installed in the handheld portion 112. In some other embodiments, the handheld portion 112 may also include a light-transmitting material to display the structural components installed in the handheld portion 112, or to allow light emitted by other light-emitting structures installed in the handheld portion 112 to pass through the handheld portion 112.

[0049] In the embodiment of the present application, the brush head 200 has a second docking surface 201. When the brush head 200 is plugged into the output shaft 120, the second docking surface 201 and the first docking surface 101 are arranged opposite to each other in the extension direction G of the output shaft 120, and in the extension direction G of the output shaft 120, the distance between the second docking surface 201 and the first docking surface 101 is in the range of 0.1mm~1.0mm, which makes the overall structure of the electric toothbrush 10 compact, prevents the output shaft 120 from being exposed to the outside world too large, and further prevents the output shaft 120 from contacting with the external structure to cause collision or bring safety hazards.

[0050] In some embodiments, the handle 100 has a light source 400, and the brush head 200 has a reflective portion 300, such as Figure 3As shown, the housing 110 of the handle 100 has a docking channel 102, and the light source 400 is disposed in the docking channel 102. The outer surface of the light source 400 includes a first docking surface 101, and the reflective portion 300 is disposed toward the first docking surface 101. Light emitted by the light source 400 is emitted through the first docking surface 101 and projected onto the reflective portion 300. In the extension direction G of the output shaft 120, the reflective portion 300 covers the first docking surface 101 of the light source 400. This prevents some light from passing through the reflective portion 300 and reaching the side of the reflective portion 300 facing the cleaning portion 220 when the light source 400 projects light toward the reflective portion 300, thereby reducing the probability of light being projected into the user's eyes.

[0051] The docking channel 102 has a docking port 103 facing the cleaning portion 220, the light source 400 is arranged in the docking channel 102, and the light source 400 has multiple installation positions relative to the docking port 103, wherein the docking channel 102 can be defined by the hand-held portion 112. In multiple installation positions, the light source 400 can be encapsulated by filling the gap between the light source 400 and the wall of the docking channel 102 with a connecting layer, and by filling the gap between the light source 400 and the structural parts adjacent to it with a connecting layer, so as to prevent external substances from entering the interior of the hand-held portion 112 through the gap at the light source 400.

[0052] The light source 400 of the embodiment of the present application may include a lamp bead and a light-transmitting protective layer, the light-transmitting protective layer covering the lamp bead to protect the lamp bead, and the light-transmitting protective layer having a first docking surface 101. Optionally, the first docking surface 101 is a plane and perpendicular to the extension direction G of the output shaft 120.

[0053] In some embodiments, as Figure 3 As shown, the handle 100 has a light source 400, and the surface of the reflective portion 300 facing the first docking surface 101 directly forms the second docking surface 201. The light emitted by the light source 400 through the first docking surface 101 is directly projected onto the second docking surface 201, and after being reflected by the reflective portion 300, is emitted from the area between the second docking surface 201 and the first docking surface 101.

[0054] In some embodiments, as Figure 4As shown, the handle 100 has a light source 400, and the brush head 200 has a first light-transmitting layer 510. The first light-transmitting layer 510 is arranged on the side of the reflective portion 300 facing the first docking surface 101, and is integrally formed with the reflective portion 300. The surface of the first light-transmitting layer 510 facing the first docking surface 101 forms a second docking surface 201. The light emitted by the light source 400 through the first docking surface 101 is projected onto the second docking surface 201, and is projected onto the reflective portion 300 after passing through the first light-transmitting layer 510. After being reflected by the reflective portion 300, it is passed through the first light-transmitting layer 510 again, and the first light-transmitting layer 510 is emitted from the peripheral side wall of the first light-transmitting layer 510. In this case, the spacing between the reflective portion 300 and the first mating surface 101 of the light source 400 along the extension direction G of the output shaft 120 can be set to h1, with 0.5mm≤h1≤5.0mm. Within this spacing range, the light emitted from the area between the reflective portion 300 and the light source 400 has an appropriate amount of light output and good light efficiency, and the first light-transmitting layer 510 can also provide protection for the output shaft 120. If the spacing between the reflective portion 300 and the light source 400 is greater than 5.0mm, the spacing is too large, which can easily cause light emitted by the light source 400 to overflow and project into the user's eyes.

[0055] It is understandable that when the light source 400 is located on the side of the light guide layer facing away from the cleaning portion 220, the light source 400 emits light toward the side of the cleaning portion 220. The light emitted by the light source 400 may directly pass over the reflective portion 300 and reach the side of the reflective portion 300 facing the cleaning portion 220, which may irritate the eyes. Based on this, in some embodiments, a second docking surface 201 is provided along the extension direction G of the output shaft 120 to cover the first docking surface 101. The second docking surface 201 directs all light emitted by the light source 400 toward the side of the reflective portion 300 facing away from the cleaning portion 220, thereby preventing the light emitted by the light source 400 from directly passing over the reflective portion 300 and reaching the side of the reflective portion 300 facing the cleaning portion 220.

[0056] In some embodiments, as Figure 3 and Figure 4 As shown, the first docking surface 101 and the docking port 103 are coplanar. The light source 400, except for the first docking surface 101, is enclosed within the handle 112. The first docking surface 101 of the light source 400 forms a smooth transition with the outer surface of the handle 112 to prevent dirt from accumulating. In this case, light emitted through the first docking surface 111 can be directly projected onto the second docking surface 201 of the reflective portion 300. Alternatively, the brush head 200 can be configured to include a first light-transmitting layer 510. Light emitted through the first docking surface 111 enters the first light-transmitting layer 510 from the second docking surface 201, travels through the first light-transmitting layer 510, and is then projected onto the reflective portion 300.

[0057] In some embodiments, as Figure 5As shown, along the extension direction G of the output shaft 120, the light source 400 has a thickness. The light source 400 may be partially located within the docking channel 102, while the other portion may extend beyond the docking port 103. Specifically, the portion of the light source 400 having the first docking surface 101 extends beyond the docking port 103 along the extension direction G of the output shaft 120. The portion of the light source 400 not extending beyond the docking port 103 is encapsulated within the handheld portion 112. Light emitted by the light source 400 is entirely emitted through the first docking surface 101 and projected onto the reflective portion 300. In this case, light emitted through the first docking portion 111 can be directly projected onto the second docking surface 201 of the reflective portion 300. Alternatively, the brush head 200 may include a first light-transmitting layer 510. The first light-transmitting layer 510 and the reflective portion 300 may define a hollow groove. The light source 400 may partially extend within the hollow groove, with the first light-transmitting layer 510 providing protection for the light source 400.

[0058] In some embodiments, as Figure 6 As shown, the first docking surface 101 is located within the docking channel 102, thereby accommodating the light source 400 within the docking channel 102, and the handle portion 112 provides protection for the light source 400. In this case, light emitted through the first docking portion 111 can be directly projected onto the second docking surface 201 of the reflective portion 300. Alternatively, the brush head 200 may include a first light-transmitting layer 510, which extends into the docking channel 102 to receive light emitted through the first docking surface 101. The peripheral sidewalls of the first light-transmitting layer 510 are spaced apart from the walls of the docking channel 102, so that light reflected by the reflective portion 300 is emitted from the portion of the first light-transmitting layer 510 that does not extend into the docking channel 102. The portion of the handle portion 112 defining the docking channel 102 includes a reflective material, which can reflect light within the docking channel 102 toward the reflective portion 300, allowing more light to be reflected by the reflective portion 300 and then emitted from the electric toothbrush 10, thereby improving light utilization.

[0059] In some embodiments, as Figure 7 As shown, the housing 110 has a docking portion 111, which is located at one end of the handle 112 and is integrally formed with the handle 112. The docking portion 111 forms a first docking surface 101 on the outer surface of the handle 200. The handle 100 has a light source 400, which is located on the side of the docking portion 111 facing away from the first docking surface 101. The docking portion 111 provides protection for the light source 400. The light source 400 can be mounted on the handle 112, and positioned adjacent to the docking portion 111 relative to the rear end of the handle 112, so that light emitted by the light source 400 can be emitted from the handle 100 via a shorter path. A transparent connecting adhesive layer can be used to encapsulate the light source 400 in the gap between the light source 400 and the docking portion 111 or the handle wall. Alternatively, a transparent encapsulation layer can be directly applied to the surface of the light source 400 to directly encapsulate the light source 400 and secure the handle 112.

[0060] In some embodiments, as Figure 8 and Figure 9 As shown, the docking portion 111 includes a second light-transmitting layer 520 and a reflecting portion 300 stacked along the extending direction G of the output shaft 120. The surface of the reflecting portion 300 facing away from the second light-transmitting layer 520 forms a first docking surface 101. The light source 400 is arranged on the side of the reflecting portion 300 facing away from the first docking surface 101 and emits light toward the reflecting portion 300.

[0061] In some embodiments, as Figure 8 As shown, the second light-transmitting layer 520 and the reflective portion 300 form a light-emitting cavity, and a portion of the light source 400 extends into the light-emitting cavity. At this time, the second light-transmitting layer 520 is arranged around the light source 400, and the light emitted by the light source 400 is directly projected onto the reflective portion 300, and is reflected by the reflective portion 300 and projected onto the second light-transmitting layer 520, and then passes through the second light-transmitting layer 520 and is emitted from the outer peripheral wall of the second light-transmitting layer 520.

[0062] In some embodiments, as Figure 9 As shown, the light source 400 is arranged on the side of the second light-transmitting layer 520 away from the reflective part 300. The light emitted by the light source 400 passes through the second light-transmitting layer 520 and is projected onto the reflective part 300. The light reflected by the reflective part 300 enters the second light-transmitting layer 520 and is emitted from the outer wall of the second light-transmitting layer 520.

[0063] In some embodiments, as Figure 10 As shown, the brush head 200 includes a light source 400 and a reflective portion 300, and the reflective portion 300 is provided on the side of the light source 400 facing away from the handle 100, and the light source 400 emits light toward the side facing away from the handle 100. In this case, the brush head 200 is provided with an optical brush rod 210, the reflective portion 300 is provided inside the optical brush rod 210, and the light source 400 can be provided on the surface of the optical brush rod 210, with the surface of the light source 400 facing the handle 100 forming the second docking surface 201. Alternatively, the light source 400 is encapsulated inside the optical brush rod 210, with the surface of the optical brush rod 210 facing the handle 100 forming the second docking surface 201.

[0064] In some embodiments, as Figure 11As shown, the brush head 200 includes a light source 400 and a reflective portion 300, and the reflective portion 300 is disposed on the side of the light source 400 facing the handle 100, and the light source 400 emits light toward the side where the handle 100 is located. In this case, the brush head 200 is configured to include an optical brush rod 210, the light source is disposed inside the optical brush rod 210, and the reflective portion 300 can be disposed on the surface of the optical brush rod 210, with the surface of the reflective portion 300 facing the handle 100 forming the second docking surface 201. Alternatively, the reflective portion 300 is encapsulated inside the optical brush rod 210, with the surface of the optical brush rod 210 facing the handle 100 forming the second docking surface 201.

[0065] In some embodiments, as Figure 12 As shown, the brush head 200 includes a light source 400, and the portion of the handle 100 facing the light source 400 forms a reflective portion 300. The light source 400 emits light toward the side of the handle 100, and the surface of the reflective portion 300 facing the light source 400 forms a first docking surface 101. In this case, the brush head 200 can be configured to include an optical brush rod 210, and the light source 400 can be disposed on the surface of the optical brush rod 210, with the surface of the light source 400 facing the handle 100 forming a second docking surface 201. Alternatively, the light source 400 can be encapsulated within the optical brush rod 210, with the surface of the optical brush rod 210 facing the handle 100 forming the second docking surface 201.

[0066] In some embodiments, when the light source 400 is located on the side of the reflective portion 300 away from the cleaning portion 220, all the light emitted by the light source 400 is projected onto the reflective portion 300, and after being reflected by the reflective portion 300, all is projected toward the side of the reflective portion 300 away from the cleaning portion 220.

[0067] In some embodiments, one of the light source 400 and the reflective portion 300 away from the handle 100 has a light-transmitting area, and some of the light between the light source 400 and the reflective portion 300 passes through the light-transmitting area and enters the portion of the optical brush holder 210 away from the handle 100, so as to be emitted from the optical brush holder 210 through the light-transmitting outer surface 203 of the optical brush holder 210.

[0068] In some embodiments, when the light source 400 is located on the side of the reflective portion 300 facing away from the cleaning portion 220, the reflective portion 300 is provided with a light-transmitting area, and a portion of the light between the light source 400 and the reflective portion 300 is projected onto the reflective portion 300 and reflected by the reflective portion 300. Another portion of the light between the light source 400 and the reflective portion 300 passes through the light-transmitting area to enter the portion of the optical brush rod 210 adjacent to the cleaning portion 220 and is emitted from the optical brush rod 210 from the light-transmitting outer surface 203.

[0069] In some embodiments, when the light source 400 is disposed on the side of the reflective portion 300 facing the cleaning portion 220, the light source 400 is provided with a light-transmitting area. A portion of the light between the light source 400 and the reflective portion 300 is projected onto the reflective portion 300 and reflected by the reflective portion 300. Another portion of the light between the light source 400 and the reflective portion 300 passes through the light-transmitting area to enter the portion of the optical brush rod 210 adjacent to the cleaning portion 220 and is emitted from the optical brush rod 210 from the light-transmitting outer surface 203.

[0070] In some embodiments, the optical brush rod 210 includes a light-transmitting body 211, which has a light-transmitting outer surface 203. When the brush head 200 has a light source 400 or a reflective portion 300, the light source 400 and the reflective portion 300 are connected to the light-transmitting body 211. The light-transmitting body 211 only plays the role of transmitting light. Except for the fact that the refractive index of some areas is different due to processing factors, which causes the light to be deflected, the light-transmitting body 211 has almost no effect on changing the propagation direction of the light.

[0071] In some embodiments, the optical brush rod 210 includes an optical pattern portion 212, which is disposed inside the light-transmitting body 211. Optionally, the optical pattern portion 212 includes at least one of a light-guiding material and a reflective material. When the optical pattern portion 212 includes a light-guiding material, a portion of the light entering the optical brush rod 210 is transmitted through the light-guiding material of the optical pattern portion 212 to the optical brush rod 210 that is emitted from the light-transmitting outer surface 203, so that the optical brush rod 210 can present a pattern; when the optical pattern portion 212 includes a reflective material, a portion of the light entering the optical brush rod 210 is reflected through the reflective material of the optical pattern portion 212 to the optical brush rod 210 that is emitted from the light-transmitting outer surface 203, so that the optical brush rod 210 can present a pattern.

[0072] The embodiments of the present application do not limit the materials and processing methods of the light-transmitting body 211 and the optical pattern portion 212. Any light-transmitting body 211 and optical pattern portion 212 in the art that can meet the optical requirements of the present application are applicable to the present application.

[0073] In some embodiments, the brush head 200 of the present application includes a buffer hole 202, into which the output shaft 120 extends. The output shaft 120 can have an interference fit with the wall of the buffer hole 202 to define the position of the brush head 200 relative to the output shaft 120. The above is merely an example, and the present application does not limit the method for defining the position of the brush head 200 relative to the output shaft 120. Any structure in the art that can meet the installation requirements of this application is applicable to this application.

[0074] In some embodiments, the brush head 200 includes an optical layer 213 disposed within the optical brush shaft 210. Specifically, the optical layer 213 is disposed within the light-transmitting body 211, and the optical layer 213 defines the buffer hole 202. The optical layer 213 may include a light-shielding material to shield the output shaft 120 extending into the buffer hole 202; alternatively, the optical layer 213 may include a light-transmitting material, and the optical layer 213 may also include at least one of a light-guiding material and a light-reflecting material. When the optical layer 213 includes both a light-transmitting material and a light-guiding material, a portion of light entering the brush head 200 is transmitted through the optical layer 213 to the optical brush shaft 210 from the light-transmitting outer surface 203; when the optical layer 213 includes both a light-transmitting material and a light-reflecting material, a portion of light entering the brush head 200 is reflected by the optical layer 213 to the optical brush shaft 210 from the light-transmitting outer surface 203.

[0075] In some embodiments, the light source 400 includes a plurality of lamp beads, which are arranged in the same plane parallel to the first docking surface 1011. The plurality of lamp beads are arranged around the output shaft 120, so that the light source 400 is annular as a whole. Correspondingly, the reflective portion 300 is configured as an annular structure similar to the light source 400. The reflective portion 300 has a first opening, and the light source 400 has a second opening. The first opening, the second opening, and the buffer hole 202 are coaxially arranged. The output shaft 120 passes through the first opening and the second opening and extends into the buffer hole 202. The optical layer 213 having the buffer hole 202 extends to the portion connected to the brush head 200 having the second docking surface 201, so that light passes through the optical layer 213 and enters the interior of the light-transmitting body 211 to prevent light leakage.

[0076] In some embodiments, the light source 400 is configured such that each lamp bead emits light in a divergent state, so that the light emitted by the light source 400 can enter the interior of the reflective portion 300 at multiple angles.

[0077] In some embodiments, the light source 400 is configured so that at least some of the lamp beads emit light simultaneously. For example, the light source 400 is configured so that multiple adjacent lamp beads emit light simultaneously; or, a preset number of lamp beads emit light simultaneously.

[0078] In some embodiments, the light source 400 is configured so that each lamp bead emits light in a cycle according to a preset light-emitting cycle. For example, the light source 400 is configured so that multiple lamp beads form a group of light-emitting units, the lamp beads of the same light-emitting unit emit light at the same time, and multiple groups of light-emitting units emit light at preset time intervals. After all the light-emitting units emit light, it is a preset light-emitting cycle.

[0079] In some embodiments, the light source 400 is configured so that at least two of the multiple lamp beads emit light of different wavelengths. For example, the light source 400 is configured so that the lamp beads can emit white light, red light, yellow light, green light or blue light.

[0080] In some embodiments, the light source 400 is configured so that at least two of the multiple lamp beads emit light of different brightness levels. For example, the light source 400 is configured so that the lamp beads can emit light of X brightness levels, where X is 2 to 5, so that a light source 400 with appropriate brightness can be selected according to needs.

[0081] The electric toothbrush 10 of the embodiment of the present application may also include a controller, which is electrically connected to the light source 400. The controller can control the number of light-emitting lamps, preset light-emitting cycles, light-emitting wavelengths, light-emitting brightness and other light-emitting states, and the controller can simultaneously control multiple of the above-mentioned light-emitting states of the lamp beads, so that the light source 400 has a rich light-emitting state.

[0082] In some embodiments, the electric toothbrush 10 includes a pressure sensor, which is signal-connected to the controller. The pressure sensor is used to sense the pressure acting on the cleaning section 220 and generate a pressure signal. The controller receives the pressure signal and controls the lighting state of the light source 400 according to the pressure signal to prompt the user whether the pressure acting on the cleaning section 220 is too high. The pressure sensor can be mounted on the brush head 200 and connected to the cleaning section 220 to directly sense the pressure acting on the cleaning section 220; alternatively, the pressure sensor can be mounted on the brush head 200 and contact the output shaft 120, and indirectly obtain the pressure acting on the cleaning section 220 by sensing the pressure change when the brush head 200 moves relative to the output shaft.

[0083] In some embodiments, the electric toothbrush 10 includes a near-field sensing device that is signal-connected to the controller. The near-field sensing device is used to sense the installation status of the brush head 200 on the output shaft 120 and generate a near-field signal. The controller receives the near-field signal and controls the light-emitting state of the light source 400 based on the near-field signal. The near-field sensing device can be installed on the portion of the brush head 200 facing the handle 100, for example, to sense the distance between the first docking surface 1011 and the second docking surface 201 to sense the state of the output shaft 120 inserted into the brush head 200; alternatively, the near-field sensing device can be installed inside the brush head 200 to directly sense the position of the output shaft 120 to sense the state of the output shaft 120 inserted into the brush head 200.

[0084] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of this application, it should be understood that if the terms "upper", "lower", "left", "right", etc. indicate an orientation or position relationship, they are based on the orientation or position relationship shown in the drawings. This is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0085] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. An electric toothbrush, characterized in that: include: A handle comprising a housing and an output shaft, wherein an outer surface of the handle comprises a first docking surface, and the output shaft extends from the interior of the housing to the first docking surface; and a brush head, detachably mounted on the output shaft; Wherein, at least one of the brush head and the handle has a light source, and at least one of the brush head and the handle has a reflective portion facing the light source, the reflective portion is spaced apart from the light source, and the light source is configured to project at least part of the light onto the reflective portion, the reflective portion reflects the light projected by the light source, and emits the electric toothbrush from the area between the reflective portion and the light source.

2. The electric toothbrush according to claim 1, wherein The handle has the light source, the housing has a docking channel, the light source is arranged in the docking channel, and the outer surface of the light source includes the first docking surface; The brush head has the reflective portion, and the reflective portion is arranged toward the first docking surface.

3. The electric toothbrush according to claim 2, wherein: The docking channel has a docking port facing the reflective portion; The first docking surface and the docking port are in the same plane; or, The portion of the light source having the first docking surface extends out of the docking port; or, The first docking surface is located in the docking channel, and a portion of the housing defining the docking channel includes a reflective material.

4. The electric toothbrush according to claim 2, wherein: The surface of the reflective portion facing the first docking surface forms a second docking surface; or, The brush head has a first light-transmitting layer, which is provided on the surface of the reflective portion facing the first docking surface and is integrally formed with the reflective portion, and the surface of the first light-transmitting layer facing the first docking surface forms a second docking surface; Along the extending direction of the output shaft, the second docking surface is arranged opposite to the first docking surface, and the second docking surface covers the first docking surface.

5. The electric toothbrush according to claim 1, wherein The housing has a docking portion, the docking portion including a second light-transmitting layer and a light-reflecting portion stacked along the extending direction of the output shaft, and the surface of the light-reflecting portion facing away from the second light-transmitting layer forms the first docking surface; The handle has the light source, which is arranged on a side of the reflective portion away from the first docking surface and emits light toward the reflective portion.

6. The electric toothbrush according to claim 5, characterized in that The second light-transmitting layer and the light-reflecting portion form a light-emitting cavity, a portion of the light source extends into the light-emitting cavity, and light emitted by the light source is directly projected onto the light-reflecting portion; or, The light source is disposed on a side of the second light-transmitting layer away from the light-reflecting portion, and light emitted by the light source passes through the second light-transmitting layer and is projected onto the light-reflecting portion.

7. The electric toothbrush according to claim 1, wherein The brush head includes an optical brush rod having a light-transmitting outer surface; The reflective portion is provided with a light-transmitting area, and the light source is configured so that a portion of the light passes through the light-transmitting area to enter the interior of the optical brush rod and is emitted from the light-transmitting outer surface of the optical brush rod.

8. The electric toothbrush according to claim 1, wherein The brush head includes a light source; The brush head includes the reflecting portion, which is arranged on the side of the light source facing the handle; or, the brush head includes the reflecting portion, which is arranged on the side of the light source facing away from the handle; or, the part of the handle facing the light source forms the reflecting portion.

9. The electric toothbrush according to claim 8, characterized in that The brush head includes an optical brush rod having a light-transmitting outer surface, and the light source is provided on the optical brush rod; Among them, one of the light source and the reflective portion away from the handle has a light-transmitting area, and part of the light between the light source and the reflective portion passes through the light-transmitting area and enters the part of the optical brush rod away from the handle, so as to be emitted from the optical brush rod from the light-transmitting outer surface.

10. The electric toothbrush according to claim 7 or 9, characterized in that: The optical brush handle includes a light-transmitting body and an optical pattern portion, wherein the optical pattern portion is disposed inside the light-transmitting body and is located on a side of the reflective portion away from the handle, and the light-transmitting body has the light-transmitting outer surface; The optical pattern portion includes a light-guiding material, and a portion of the light entering the optical brush rod is conducted through the optical pattern portion to exit the optical brush rod from the light-transmitting outer surface; and / or, The optical pattern portion includes a reflective material, and a portion of light entering the optical brush rod is reflected by the optical pattern portion and emitted from the optical brush rod through the light-transmitting outer surface.

11. The electric toothbrush according to claim 7 or 9, characterized in that The brush head includes an optical layer disposed inside the optical brush rod, the optical layer defines a buffer hole, and the output shaft passes through the light-transmitting area and is plugged into the buffer hole; The optical layer includes a light-guiding material, and a portion of the light passing through the light-transmitting area is conducted through the optical layer into the optical brush rod; and / or, The optical layer includes a reflective material, and a portion of the light passing through the light-transmitting area is reflected by the optical layer and enters the optical brush rod.

12. The electric toothbrush according to claim 1, wherein The light source includes a plurality of lamp beads, the plurality of lamp beads are arranged on a same plane parallel to the first docking surface, and the plurality of lamp beads are arranged around the output shaft.

13. The electric toothbrush according to claim 12, wherein: The light source is configured so that at least some of the lamp beads emit light simultaneously; and / or, The light source is configured so that each lamp bead emits light cyclically according to a preset period; and / or, The light source is configured such that at least two of the plurality of lamp beads emit light of different wavelengths; and / or, The light source is configured such that at least two of the plurality of lamp beads emit light of different brightness levels.

14. The electric toothbrush according to claim 1, wherein The brush head has a cleaning portion, and the electric toothbrush includes a pressure sensor for sensing pressure acting on the cleaning portion and generating a pressure signal to control the lighting state of the light source according to the pressure signal.

15. The electric toothbrush according to claim 1, wherein The electric toothbrush includes a near-field sensing device for sensing the installation state of the brush head on the output shaft and generating a near-field signal to control the light emitting state of the light source according to the near-field signal.

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