Electric toothbrush

Abstract

The utility model discloses an electric toothbrush. The electric toothbrush comprises a 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 face, and the output shaft extends out of the first butt joint face 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 shell is provided with a light source, at least one of the brush head and the shell is provided with a light guide part facing the light source, the outer surface of the light guide part comprises a light guide side face, the light guide part receives light rays emitted by the light source, and at least part of the light rays entering the light guide part are emitted out of the light guide part from the light guide side face. The light emitted by the light source is transmitted through the light guide part, the light is emitted from the side face of the electric toothbrush so as to remind a user, the light emitted by the light guide part is soft, the light guide part and the handle or the brush head can be integrally arranged conveniently, the light source can also be packaged in the handle or the brush head, and the situation that cleaning dead corners contain dirt is avoided.

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, the end of at least one of the brush head and the handle has a light source, and the end of at least one of the brush head and the handle has a light-guiding portion facing the light source, the outer surface of the light-guiding portion includes a light-guiding side surface, the light-guiding portion receives the light emitted by the light source, and at least part of the light entering the light-guiding portion is emitted from the light-guiding portion from the light-guiding side surface.

[0008] The electric toothbrush according to the embodiment of the present application transmits the light emitted by the light source through the light guide part, and emits the light from the side of the electric toothbrush to prompt the user. The light emitted by the light guide part is relatively soft, which prevents the light emitted by the light source from being directly projected into the user's eyes and causing irritation, and the light prompting effect is good. By transmitting light through the light guide part, the structure of the light guide part can be designed to be relatively simple, and it is convenient to set the light guide part and the handle or brush head as one piece. The light source can also be encapsulated in the handle or brush head to prevent the existence of cleaning dead corners to accommodate dirt. During assembly, the brush head is installed on the output shaft, and the light guide part can be directly aligned with the light source. The light guide part can smoothly receive and transmit light, and the light output structure is simple.

[0009] In some embodiments, the housing has a docking wall, which forms the first docking surface on the outer surface of the brush head; the handle has the light source, which is located on the side of the docking wall facing away from the first docking surface and is encapsulated within the housing; the brush head has a second docking surface, which is arranged opposite the first docking surface in the extension direction of the output shaft. Based on the above embodiment, the light source is encapsulated in the handle, and the docking wall provides protection for the light source, facilitating a sealed and waterproof design, and also facilitating electrical connection between the light source and the electronic components in the handle to supply power to the light source. The handle also has more space to reserve more space for accommodating the light source, allowing the light source to have more luminous states.

[0010] In some embodiments, the docking wall is a light guide portion, and the first docking surface is arranged at an angle to the light guide side surface. Based on the above embodiment, the light emitted by the light source can be directly projected onto the light guide portion and then emitted from the light guide portion for processing, resulting in a short optical path and low light loss.

[0011] In some embodiments, the docking wall is a light-transmitting wall, the brush head has the light-guiding portion, and the light-guiding portion has the second docking surface. Light emitted by the light source passes through the light-transmitting wall and is projected onto the second docking surface via the first docking surface to enter the light-guiding portion. The second docking surface is arranged at an angle to the light-guiding side surface. Based on the above embodiment, the light-transmitting wall can both allow light to pass through and provide protection for the light source, allowing the light-guiding portion to be arranged on the brush head to facilitate the light-guiding portion to subsequently transmit light to the side away from the handle.

[0012] In some embodiments, there are two light guide parts, one of which is a first light guide part and is formed by the docking wall, and the other is a second light guide part and is provided on the brush head, the first light guide part has the first docking surface, the second light guide part has the second docking surface, the light guide side surface of the first light guide part is set at an angle to the first docking surface, and the light guide side surface of the second light guide part is set at an angle to the second docking surface, and part of the light emitted by the light source passes through the light guide part and is projected from the first docking surface to the second docking surface to enter the second light guide part. Based on the above embodiment, by providing two light guide parts, there is more light output area, thereby having a better light output effect.

[0013] In some embodiments, the handle has the light source, the housing has a docking channel, the light source is disposed in the docking channel, and the outer surface of the light source includes the first docking surface; the brush head has the light guide portion, the light guide portion has a second docking surface, the second docking surface is arranged at an angle to the light guide side surface, the second docking surface and the first docking surface are arranged opposite to each other in the extension direction of the output shaft, and at least part of the light emitted by the light source is projected onto the second docking surface through the first docking surface to enter the light guide portion. Based on the above embodiment, the light source is disposed in the docking channel, and the handle portion provides protection for the light source, so that the light emitted by the light source can be directly projected onto the brush head, resulting in low light loss and a good light prompt effect.

[0014] In some embodiments, the brush head has a cleaning portion that acts on the area to be cleaned, and the docking channel has a docking port facing the cleaning portion; the first docking surface and the docking port are in the same plane; or, the light source has a portion of the first docking surface that extends out of the docking port, and the portion of the light source that extends out of the docking port has a side light-emitting surface, the side light-emitting surface is connected to the first docking surface at an angle, and the second docking surface covers the side light-emitting surface in a direction perpendicular to the side light-emitting surface, and the light source is configured to emit light that is projected onto the second docking surface through the first docking surface and the side light-emitting surface respectively; or, the first docking surface is in the docking channel, a portion of the light-guiding portion extends into the docking channel, and the portion of the light-guiding portion that extends into the docking channel has the second docking surface. Based on the above embodiments, the light source has a variety of installation positions relative to the docking port, so as to flexibly set the position of the light source relative to the shell and to facilitate flexible setting of the shape of the light-guiding portion.

[0015] In some embodiments, the projections of the first and second docking surfaces overlap in the extension direction of the output shaft. Based on the above embodiment, the second docking surface of the brush head can more comprehensively receive light from the light source, preventing light leakage. At the same time, it facilitates a smooth transition between the brush head and the handle, preventing the uneven surface of the electric toothbrush from easily accumulating dirt or causing bumps.

[0016] In some embodiments, the brush head includes an optical brush rod having a light-transmitting outer surface. The brush head receives light passing through the first docking surface via the second docking surface, and a portion of the light that enters the brush head is emitted from the light-transmitting outer surface through the optical brush rod. Based on the above embodiment, the light-transmitting outer surface of the optical brush rod can also emit light, thereby enriching the light-emitting effect of the electric toothbrush and providing a better prompt effect when the light source is illuminated.

[0017] In some embodiments, the brush head includes a light source; the brush head includes the light guide portion, at least a portion of which is located on a side of the light source facing away from the handle; or the brush head includes the light guide portion, which is located on a side of the light source facing the handle; or the handle includes the light guide 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 light guide portion relative to the light source, allowing the light guide portion to more comprehensively receive light emitted by the light source, thereby better preventing light leakage.

[0018] In some embodiments, the brush head includes an optical brush rod, the light source is disposed on the optical brush rod, and the optical brush rod has a light-transmitting outer surface. In the extension direction of the output shaft, a portion of the optical brush rod is connected to the light-guiding portion to receive light transmitted by the light-guiding portion and emit light from the light-transmitting outer surface out of the optical brush rod. Based on the above embodiment, the light-guiding portion is directly connected to the optical brush rod, and light entering the light-guiding portion can be transmitted to the side away from the handle and directly enter the optical brush rod, resulting in minimal light loss.

[0019] In some embodiments, the optical brush bar includes a light-transmitting body and an optical pattern portion, wherein the optical pattern portion is disposed inside the light-transmitting body, 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.

[0020] In some embodiments, the brush head includes an optical layer disposed within the optical brush rod, the optical layer defining the buffer hole, and the output shaft being plugged into the buffer hole; the optical layer includes a light-guiding material, and a portion of light entering the brush head is transmitted through the optical layer to exit the optical brush rod from the light-transmitting outer surface; and / or the optical layer includes a reflective material, and a portion of light entering the brush head is reflected through the optical layer to exit the optical brush rod from the light-transmitting outer surface. Based on the above embodiments, the optical layer can also present a pattern, further enriching the light-emitting effect of the optical brush rod.

[0021] 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.

[0022] 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 light emission 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.

[0023] 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.

[0024] 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

[0025] 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.

[0026] Figure 1 This is a schematic diagram of the three-dimensional structure of an electric toothbrush according to an embodiment of the present application;

[0027] Figure 2 This is a schematic cross-sectional view of an electric toothbrush according to an embodiment of the present application;

[0028] Figure 3 This is a partial cross-sectional structural diagram of an embodiment of the present application in which a handle has a light source and a brush head has a light guide portion;

[0029] Figure 4 This is a partial cross-sectional structural diagram of a handle having a light source and a light guide portion according to an embodiment of the present application;

[0030] Figure 5 This is a partial cross-sectional structural diagram of an embodiment of the present application showing a handle having a first light guide portion and a brush head having a second light guide portion;

[0031] Figure 6 This is a schematic diagram of a partial cross-sectional structure in which the first docking surface is flush with the docking port in one embodiment of the present application;

[0032] Figure 7 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;

[0033] Figure 8 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;

[0034] Figure 9 This is a partial cross-sectional structural diagram of an embodiment of the present application in which the light guide portion is arranged on the side of the light source facing the handle;

[0035] Figure 10 This is a partial cross-sectional structural schematic diagram of an embodiment of the present application in which at least a portion of the light guide portion is disposed on a side of the light source away from the handle;

[0036] Figure 11 This is a schematic diagram of a partial cross-sectional structure of a light guide portion connected to a first light reflecting layer according to an embodiment of the present application;

[0037] Figure 12 This is a partial cross-sectional structural diagram of an embodiment of the present application in which the handle has a light guide portion and the brush head has a light source;

[0038] Figure 13 This is a schematic diagram of a partial cross-sectional structure of a light guide portion connected to a second light reflecting layer in an embodiment of the present application.

[0039] Reference numerals:

[0040] 10. Electric toothbrush;

[0041] 100, handle; 110, housing; 111, docking wall; 111a, light-transmitting wall; 112, hand-held portion; 101, first docking surface; 102, docking channel; 103, docking port; 120, output shaft; 130, drive assembly;

[0042] 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;

[0043] 300, light guide portion; 301, light guide side surface; 310, first light guide portion; 320, second light guide portion; 400, light source; 410, side light emitting surface; 510, first light reflecting layer; 520, first light reflecting layer;

[0044] G. Extension direction. DETAILED DESCRIPTION

[0045] 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.

[0046] The inventors have discovered that the indicator light and handle tube in related art are typically separate structures. Therefore, during use, dirt and grime can easily accumulate between the indicator light and the handle tube. Furthermore, in a humid bathroom environment, long-term use can lead to a loose seal, which can in turn cause moisture to penetrate, affecting the performance of the light and even causing electronic component failure. Based on this, the present invention provides an electric toothbrush.

[0047] 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.

[0048] In which, the end of at least one of the brush head 200 and the shell 110 has a light source 400, and the end of at least one of the brush head 200 and the handle 100 has a light guiding part 300 facing the light source 400, and the outer surface of the light guiding part 300 includes a light guiding side surface 301. The light guiding part 300 receives the light emitted by the light source 400, and at least part of the light entering the light guiding part 300 is emitted from the light guiding side surface 301.

[0049] The embodiment of the present application transmits the light emitted by the light source 400 through the light guide part 300, and emits the light from the side of the electric toothbrush 10 to prompt the user. The light emitted by the light guide part 300 is relatively soft, which prevents the light emitted by the light source 400 from being directly projected onto the user's eyes and causing irritation, and the light prompting effect is good. By transmitting light through the light guide part 300, the structure of the light guide part 300 can be designed to be relatively simple, and it is convenient to set the light guide part 300 and the handle 100 or the brush head 200 as one piece. The light source 400 can also be encapsulated in the handle 100 or the brush head 200 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 light guide part 300 and the light source 400 can be directly aligned. The light guide part 300 can smoothly receive and transmit light, and the light output structure is simple.

[0050] The light guide portion 300 of the embodiment of the present application can be made of a light-transmitting substrate such as polycarbonate or acrylic. The material of the light guide portion 300 can also include optical particles that can change the propagation direction of light, or the surface of the light-transmitting substrate can include microstructures such as prisms and curved protrusions that can change the propagation direction of light. The light passing through the light guide portion 300 is changed by optical ions, microstructures, etc., so that the light entering the light guide portion 300 is emitted from the light guide portion 301. The embodiment of the present application does not limit the material and structure of the light guide portion 300. In the prior art, any material and structure that can change the transmission direction of light entering the light guide portion 300 so that the light is emitted from the light guide portion 301 is suitable for the present application.

[0051] 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 area to be cleaned. 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.

[0052] In some embodiments, as Figure 2 and Figure 3 As shown, the shell 110 has a docking wall 111, which is arranged at one end of the hand-held part 112, and the docking wall 111 and the hand-held part 112 are integrally arranged. The docking wall 111 forms a first docking surface 101 on the outer surface facing the brush head 200, and 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 thereby prevents the output shaft 120 from contacting with the external structure to cause collision or bring safety hazards.

[0053] like Figure 3As shown, the handle 100 includes a light source 400, which is disposed on a side of the docking wall 111 facing away from the first docking surface 101. The docking wall 111 provides protection for the light source 400. The light source 400 can be mounted on the handheld portion 112, and relative to the rear end of the handheld portion 112, the light source 400 is positioned adjacent to the docking wall 111, 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 filled in the gap between the light source 400 and the docking wall 111 or the handheld wall to encapsulate the light source 400. Alternatively, a transparent encapsulation layer can be directly disposed on the surface of the light source 400 to directly encapsulate the light source 400 and secure the handheld portion 112.

[0054] In some embodiments, as Figure 3 As shown, the docking wall 111 is a light-transmitting wall 111a, and the brush head 200 has a light-guiding portion 300. The light-guiding portion 300 has a second docking surface 201. The light-guiding side surface 301 is arranged at an angle to the second docking surface 201. The light emitted by the light source 400 passes through the light-transmitting wall 111a and is projected onto the second docking surface 201 via the first docking surface 101 to enter the light-guiding portion 300. All the light entering the light-guiding portion 300 may be emitted from the light-guiding side surface 301, or a portion of the light entering the light-guiding portion 300 may be emitted from the light-guiding side surface 301, and another portion may be emitted from a portion of the light-guiding portion 300 away from the handle 100 to enter other parts of the brush head 200. When light passes through the light-transmitting wall 111a, except for the light deviation caused by the refractive index when the light passes through different media, the light-transmitting wall 111a does not change the propagation direction of the light. Alternatively, the light-transmitting wall 111a can also converge or diverge the light emitted by the light source 400 and project it onto the second docking surface 201 to match the area of the second docking surface 201.

[0055] In some embodiments, as Figure 4 As shown, the docking wall 111 is a light guide portion 300, and the light guide side surface 301 is arranged at an angle to the first docking surface 101. The light emitted by the light source 400 is directly projected onto the light guide portion 300, and the light entering the light guide portion 300 is emitted from the light guide portion 300 from the light guide side surface 301. Optionally, all the light entering the light guide portion 300 can be emitted from the light guide portion 300 from the light guide side surface 301, or a portion of the light entering the light guide portion 300 can be emitted from the light guide portion 300 from the light guide side surface 301, and the other portion of the light can be emitted from the first docking surface 101 and projected onto the second docking surface 201 to enter the interior of the brush head 200.

[0056] In some embodiments, as Figure 5As shown, there are two light guide parts 300, one of which is a first light guide part 310 and is formed by a docking wall 111, and the other light guide part 300 is a second light guide part 320 and is arranged on the brush head 200, the first light guide part 310 has a first docking surface 101, the second light guide part 320 has a second docking surface 201, the light guide side surface 301 of the first light guide part 310 is set at an angle to the first docking surface 101, and the light guide side surface 301 of the second light guide part 320 is set at an angle to the second docking surface 201, and part of the light emitted by the light source 400 passes through the light guide part 300 and is projected to the second docking surface 201 through the first docking surface 101 to enter the second light guide part 320. Among them, part of the light entering the first light guide part 310 can be emitted from the light guiding side surface 301 of the first light guide part 310, and another part of the light can be projected through the first docking surface 101 to the second docking surface 201 to enter the second light guide part 320. The light entering the second light guide part 320 can all be emitted from the light guiding side surface 301 of the second light guide part 320, or, part of the light entering the second light guide part 320 can be emitted from the light guiding side surface 301 of the second light guide part 320, and the other part can be emitted from the part of the second light guide part 320 away from the first light guide part 310 to enter other parts of the brush head 200. In this case, the light can be emitted from two light guiding side surfaces 301, and the light output area is larger.

[0057] In some embodiments, in the extension direction G of the output shaft 120, the projections of the first docking surface 101 and the second docking surface 201 overlap, so that the second docking surface 201 can receive more light emitted from the first docking surface 101, preventing the light emitted from the first docking surface 101 from overflowing to the outside of the electric toothbrush 10, thereby improving the brightness of the light output of the light guide part 300. In addition, the outer surface of the handle 100 adjacent to the first docking surface 101 and the outer surface of the brush head 200 adjacent to the second docking surface 201 can be smoothly transitioned, making the outer surface of the electric toothbrush 10 smooth.

[0058] In some embodiments, as Figure 6As shown, the handle 100 has a light source 400, the housing 110 has a docking channel 102, the light source 400 is disposed in the docking channel 102, and the outer surface of the light source 400 includes a first docking surface 101. The brush head 200 has a light guide portion 300, the light guide portion 300 has a second docking surface 201, the second docking surface 201 is arranged at an angle to the light guide side surface 301, and 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, so that the light emitted by the light source 400 through the first docking surface 101 can directly enter the light guide portion 300 from the second docking surface 201. Optionally, all the light entering the light guide portion 300 is emitted from the light guide side surface 301, or, a portion of the light entering the light guide portion 300 is emitted from the light guide side surface 301, and another portion is emitted from a portion of the light guide portion 300 away from the handle 100 to enter other parts of the brush head 200.

[0059] 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.

[0060] 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.

[0061] In some embodiments, the first docking surface 101 of the light source 400 and the docking port 103 are located in the same plane, and all parts of the light source 400 except the first docking surface 101 are encapsulated inside the handheld portion 112 .

[0062] In some embodiments, as Figure 7As shown, the light source 400 has a thickness along the extension direction G of the output shaft 120. The light source 400 can be partially located within the docking channel 102, while the other portion extends out of the docking port 103. The portion of the light source 400 having the first docking surface 101 extends out of the docking port 103 along the extension direction G of the output shaft 120, and the portion of the light source 400 extending out of the docking port 103 has a side light emitting surface 410. The side light emitting surface 410 is connected to the first docking surface 101 at an angle, and the second docking surface 201 covers the side light emitting surface 410 in a direction perpendicular to the side light emitting surface 410. The light source 400 is configured to emit light that is projected onto the second docking surface 201 via the first docking surface 101 and the side light emitting surface 410, respectively. All light emitted via the first docking surface 101 and the side light emitting surface 410 can enter the light guiding portion 300 via the second docking surface 201. Furthermore, the portion of the light guide portion 300 facing the light source 400 may be provided with a hollow groove, the second docking surface 201 defines the hollow groove, the light source 400 partially extends out of the hollow groove, and the portion of the light source 400 extending into the hollow groove has a side light emitting surface 410, so that the light emitted from the side light emitting surface 410 can correspondingly enter the light guide portion 300 from the side wall surface of the hollow groove.

[0063] In some embodiments, as Figure 8 As shown, the first docking surface 101 is in the docking channel 102, a portion of the light guide portion 300 extends into the docking channel 102, the portion of the light guide portion 300 extending into the docking channel 102 has a second docking surface 201, and the portion of the light guide portion 300 that does not extend into the docking channel 102 has a light guide side surface 301, so that the light guide portion 300 enters the docking channel 102 to receive the light emitted by the light source 400, thereby fully preventing the light emitted by the light source 400 from leaking.

[0064] The brush head 200 includes an optical brush bar 210, one end of which is connected to the cleaning portion 220. The optical brush bar 210 has a light-transmitting outer surface 203. The brush head 200 receives light passing through the first docking surface 101 through the second docking surface 201, and a portion of the light that enters the brush head 200 can be emitted from the optical brush bar 210 through the light-transmitting outer surface 203.

[0065] In some embodiments, when the handle 100 includes a light source 400 and a light guide 300, the optical brush bar 210 has a second docking surface 201, and all light entering the optical brush bar 210 through the second docking surface 201 is emitted from the optical brush bar 210 through the light-transmitting outer surface 203. In some embodiments, when the handle 100 includes a light source 400 and the brush head 200 includes a light guide 300, the light guide 300 is integrally provided at one end of the optical brush bar 210, and the surface of the light guide 300 facing away from the optical brush bar 210 forms the second docking surface 201. A portion of the light entering the brush head 200 through the second docking surface 201 is emitted from the light guide 300 through the light-guide side surface 301, while another portion of the light passes through the light guide 300, enters the interior of the optical brush bar 210, and is emitted from the optical brush bar 210 through the light-transmitting outer surface 203.

[0066] In some embodiments, as Figure 9 As shown, the brush head 200 may also include a light source 400, and the output shaft 120 may include a conductive material. The light source 400 may be electrically connected to the output shaft 120 extending into the interior of the brush head 200, and the light source 400 may be electrically connected to the power source through the output shaft 120 to receive electrical energy.

[0067] Alternatively, as Figure 9 As shown, the brush head 200 includes a light source 400 and a light guide portion 300, and at least a portion of the light guide portion 300 is located on a side of the light source 400 facing away from the handle 100. The light emitted by the light source 400 enters the light guide portion 300 and exits the light guide portion 300 from the light guide side surface 301. When the handle 100 further includes an optical brush bar 210, the light guide portion 300 is connected to the optical brush bar 210, and the light source 400 is connected to the light guide portion 300. The light source 400 emits light in a direction away from the handle 100 to project the light onto the light guide portion 300. A portion of the light entering the light guide portion 300 exits the light guide portion 300 from the light guide side surface 301, and another portion of the light passes through the light guide portion 300 and enters the optical brush bar 210.

[0068] Alternatively, as Figure 10As shown, the brush head 200 includes a light source 400 and a light guide portion 300 , and the light guide portion 300 is provided on the side of the light source 400 facing the handle 100 . The light emitted by the light source 400 enters the light guide portion 300 and is emitted from the light guide portion 300 from the light guide side surface 301 . When the handle 100 further includes an optical brush rod 210, the light source 400 is connected to the optical brush rod 210, and the light guide portion 300 is connected to the light source 400. The light source 400 emits light toward the side where the handle 100 is located to project the light onto the light guide portion 300. The light source 400 is connected to at least one of the optical brush rod 210 and the light guide portion 300, and at least one of the optical brush rod 210 and the light guide portion 300 can be moved around to the outside of the light source 400 to connect the optical brush rod 210 to the light guide portion 300, thereby causing a portion of the light entering the light guide portion 300 to be emitted from the light guide side surface 301 and exit the light guide portion 300, while another portion of the light enters the interior of the optical brush rod 210 in a direction away from the handle 100. At this time, Figure 11 As shown, a first light reflecting layer 510 may be further provided on the portion of the light guide portion 300 facing away from the light source 400 , so that light reaching the first light reflecting layer 510 can be reflected and then re-enter the interior of the light guide portion 300 .

[0069] That is, in the embodiment of the present application, when the brush head 200 includes a light guide portion 300, a light source 400 and an optical brush rod 210, in the extension direction G of the output shaft 120, a portion of the optical brush rod 210 is connected to the light guide portion 300 to receive the light transmitted by the light guide portion 300 and emit the optical brush rod 210 from the translucent outer surface 203.

[0070] Alternatively, as Figure 12 As shown, the brush head 200 includes a light source 400, and the handle 100 includes a light guide portion 300. The light guide portion 300 can be formed by a docking wall 111. At this time, the surface of the light guide portion 300 facing the light source 400 forms a first docking surface 101, and the light guide side surface 301 is set at an angle to the first docking surface 101. The surface of the light source 400 facing the handle 100 forms a second docking surface 201. The light source 400 emits light toward the side where the handle 100 is located. The light emitted by the light source 400 is projected onto the first docking surface 101 through the second docking surface 201 to enter the light guide portion 300. All light entering the light guide portion 300 is emitted from the light guide side surface 301. At this time, as shown in FIG. Figure 13 As shown, the docking wall 111 may further include a second light reflecting layer 520. The second light reflecting layer 520 is disposed on a side of the light guide portion 300 facing away from the light source 400. Light reaching the second light reflecting layer 520 can be reflected and then re-enter the interior of the light guide portion 300. The light guide portion 300 and the second light reflecting layer 520 are integrally disposed. At least one of the light guide portion 300 and the second light reflecting layer 520 is integrally disposed on the handheld portion 112.

[0071] 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 light-guiding portion 300, the light source 400 and the light-guiding 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.

[0072] 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.

[0073] 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.

[0074] 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 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.

[0075] In some embodiments, the brush head 200 includes an optical layer 213 disposed within the optical brush rod 210. Specifically, the optical layer 213 is disposed within the light-transmitting body 211. The optical layer 213 defines a buffer hole 202, and the output shaft 120 is inserted into the buffer hole 202. The above is merely an exemplary introduction. Of course, the embodiments of the present application may also use other methods to define the position of the brush head 200 relative to the output shaft 120. The embodiments of the present application do not limit the installation structure 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.

[0076] 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, or the optical layer 213 may further include at least one of a light-guiding material and a light-reflecting material. When the optical layer 213 includes both the light-transmitting and light-guiding materials, a portion of light entering the brush head 200 is transmitted through the optical layer 213 to the optical brush holder 210 through the light-transmitting outer surface 203; when the optical layer 213 includes both the light-transmitting and light-reflecting materials, a portion of light entering the brush head 200 is reflected by the optical layer 213 to the optical brush holder 210 through the light-transmitting outer surface 203.

[0077] 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 101, and 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 light guide portion 300 is arranged in an annular structure similar to the light source 400, the light guide portion 300 has a first light guide opening, the light source 400 has a second light guide opening, the first light guide opening, the second light guide opening and the buffer hole 202 are coaxially arranged, and the output shaft 120 passes through the first light guide opening and the second light guide opening and extends into the buffer hole 202. The optical layer 213 with the buffer hole 202 extends to the portion connected to the brush head 200 with 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.

[0078] 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 light guide portion 300 at multiple angles.

[0079] 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.

[0080] 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.

[0081] 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.

[0082] 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.

[0083] 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.

[0084] 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.

[0085] 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 101 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.

[0086] 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.

[0087] 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, the end of at least one of the brush head and the handle has a light source, and the end of at least one of the brush head and the handle has a light-guiding portion facing the light source, the outer surface of the light-guiding portion includes a light-guiding side surface, the light-guiding portion receives the light emitted by the light source, and at least part of the light entering the light-guiding portion is emitted from the light-guiding portion from the light-guiding side surface.

2. The electric toothbrush according to claim 1, wherein The housing has a docking wall, and the outer surface of the docking wall facing the brush head forms the first docking surface; The handle has the light source, which is arranged on a side of the docking wall away from the first docking surface and is encapsulated inside the shell; The brush head has a second docking surface, and the second docking surface is arranged opposite to the first docking surface in the extending direction of the output shaft.

3. The electric toothbrush according to claim 2, wherein: The docking wall is a light-guiding portion, and the first docking surface is arranged at an angle to the light-guiding side surface; or The docking wall is a light-transmitting wall, the brush head has the light-guiding portion, the light-guiding portion has the second docking surface, the light emitted by the light source passes through the light-transmitting wall and is projected from the first docking surface to the second docking surface to enter the light-guiding portion, and the second docking surface is arranged at an angle to the light-guiding side surface; or, There are two light guide parts, one of which is a first light guide part and is formed by the docking wall, and the other is a second light guide part and is arranged on the brush head, the first light guide part has the first docking surface, the second light guide part has the second docking surface, the light guide side surface of the first light guide part is set at an angle to the first docking surface, and the light guide side surface of the second light guide part is set at an angle to the second docking surface, and part of the light emitted by the light source passes through the light guide part and is projected to the second docking surface through the first docking surface to enter the second light guide part.

4. The electric toothbrush according to claim 1, wherein The handle has the light source, the housing has a docking channel, the light source is disposed in the docking channel, and the outer surface of the light source includes the first docking surface; The brush head has the light-guiding portion, and the light-guiding portion has a second docking surface. The second docking surface is arranged at an angle to the light-guiding side surface. The second docking surface and the first docking surface are arranged opposite to each other in the extending direction of the output shaft. At least part of the light emitted by the light source is projected from the first docking surface to the second docking surface to enter the light-guiding portion.

5. The electric toothbrush according to claim 4, characterized in that The brush head has a cleaning portion that acts on the area to be cleaned, and the docking channel has a docking port facing the cleaning 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, the portion of the light source extending out of the docking port has a side light-emitting surface, the side light-emitting surface is connected to the first docking surface at an angle, and the second docking surface covers the side light-emitting surface in a direction perpendicular to the side light-emitting surface, and the light source is configured to emit light that is projected onto the second docking surface via the first docking surface and the side light-emitting surface respectively; or, The first docking surface is located in the docking channel, a portion of the light guide portion extends into the docking channel, and the portion of the light guide portion extending into the docking channel has the second docking surface.

6. The electric toothbrush according to claim 2 or 4, characterized in that In the extending direction of the output shaft, projections of the first abutting surface and the second abutting surface overlap.

7. The electric toothbrush according to claim 2, wherein: The brush head includes an optical brush rod having a light-transmitting outer surface. The brush head receives light passing through the first docking surface through the second docking surface, and a portion of the light entering the brush head is emitted from the optical brush rod through the light-transmitting outer surface.

8. The electric toothbrush according to claim 1, wherein The brush head includes a light source; The brush head includes the light-guiding portion, at least a portion of which is disposed on a side of the light source facing away from the handle; or The brush head includes the light guide portion, which is provided on a side of the light source facing the handle; or The handle includes a light guiding portion.

9. The electric toothbrush according to claim 8, characterized in that The brush head includes an optical brush rod, the light source is provided on the optical brush rod, and the optical brush rod has a light-transmitting outer surface; In the extending direction of the output shaft, a portion of the optical brush rod is connected to the light guide portion to receive the light transmitted by the light guide portion and emit 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 rod includes a light-transmitting body and an optical pattern portion, wherein the optical pattern portion is arranged inside the light-transmitting body, 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 is inserted into the buffer hole; The optical layer includes a light-guiding material, and a portion of the light entering the brush head is transmitted through the optical layer to the optical brush rod through the light-transmitting outer surface; and / or, The optical layer includes a reflective material, and a portion of the light entering the brush head is reflected by the optical layer and emitted from the optical brush rod through the light-transmitting outer surface.

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 of the lamp beads emits light cyclically according to a preset light-emitting 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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