Electric toothbrush
By setting the light source on the motor output shaft of the electric toothbrush and extending it into the brush head, the problem of high cost of brush head replacement in the prior art is solved, and an efficient photocatalytic effect is achieved, reducing replacement cost and energy consumption.
Patent Information
- Application Number
- CN202420827909.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-19
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2034-04-19
AI Technical Summary
When existing electric toothbrushes use photocatalysts for disinfection and sterilization, they need to set up light sources in the brush head to trigger the catalytic function of the light catalyst, resulting in an increase in the cost of brush head replacement.
The light source is set at the first end of the output shaft of the motor and extends into the brush head through the output shaft to approach the photocatalyst structure, avoiding the light source when the brush head is replaced, thereby reducing the replacement cost and improving the photocatalytic effect.
It realizes the effective triggering of the photocatalytic function without increasing the cost of brush head replacement, which improves the photocatalytic effect and reduces the energy consumption of the light source.
Smart Images
Figure CN222217994U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of sanitary ware, in particular to an electric toothbrush. Background Art
[0002] Toothbrushes are daily cleaning products that need to be used with toothpaste, and electric toothbrushes are the choice of more people because they are easy to use and have better cleaning effects than manual toothbrushes. In order to further improve the cleaning effect or reduce the use of toothpaste, a photocatalyst is set at the brush head of the electric toothbrush in the relevant technology. The photocatalyst will catalyze the water and oxygen in the mouth into hydroxyl radicals (·OH) and superoxide anion radicals (O2·), active oxygen (HO2·, H2O2) and other photoactive groups with oxidation ability. These photoactive groups can effectively decompose various organic compounds with unstable chemical bonds and some inorganic substances, and can destroy the cell membrane of bacteria and the protein carrier of coagulated viruses, playing an effective disinfection and sterilization role.
[0003] However, the premise is that the photocatalyst must be under sufficient lighting conditions, that is, a light source that can trigger the catalytic function of the photocatalyst must be set in the electric toothbrush. In order to effectively trigger the photocatalyst on the brush head, the light source in the related technology is usually also set in the brush head, and the brush head is a consumable, which undoubtedly increases the replacement cost of the brush head. Utility Model Content
[0004] The utility model aims to provide an electric toothbrush which can effectively trigger the catalytic function of a photocatalyst and has a low cost for replacing the brush head.
[0005] To achieve this purpose, the utility model adopts the following technical solutions:
[0006] An electric toothbrush comprises a brush head, a brush handle, a motor, a control circuit board, a photocatalyst structure and a light source, wherein the motor and the control circuit board are electrically connected and are both located in the brush handle, the output shaft of the motor passes through the brush handle and is inserted into the brush head to drive the brush head to vibrate, the brush head comprises a brush head body and bristles, the bristles are arranged at one end of the brush head body away from the brush handle, the photocatalyst structure is arranged on the brush head and / or the output shaft and is exposed on the brush head; the light source is arranged at the first end of the output shaft inserted into the brush head and is electrically connected to the control circuit board, and the light generated by the light source can irradiate the photocatalyst structure.
[0007] Preferably, the photocatalyst structure comprises photocatalyst particles, a plurality of the photocatalyst particles are embedded on the bristles and / or the brush head body, and the brush head body is made of a transparent material.
[0008] Preferably, the photocatalyst structure comprises a photocatalyst part, a mounting groove is provided on a side of the brush head body facing away from the bristles, the photocatalyst part is embedded in the mounting groove, and the brush head body is made of a transparent material.
[0009] Preferably, the photocatalyst structure comprises a photocatalyst coating, and the photocatalyst coating is coated on one or more of the surfaces of the bristles and the surface of the brush head body, and the brush head body is made of a transparent material.
[0010] Preferably, the photocatalyst structure comprises a photocatalyst coating, the photocatalyst coating is coated on the surface of the output shaft, and the brush head body is provided with a notch at a position corresponding to the output shaft.
[0011] Preferably, the distance between the end of the notch away from the brush handle and the bristles is between 0-40 mm.
[0012] Preferably, a receiving groove is formed at the first end portion of the output shaft, the light source is placed in the receiving groove, and the brush head body is made of a transparent material.
[0013] Preferably, the light source is electrically connected to the control circuit board via wires, the output shaft is configured as a hollow structure, and the wires pass through the output shaft to be connected to the light source.
[0014] Preferably, a seal is further included, and the seal seals the first end surface of the output shaft.
[0015] Preferably, the sealing member is glue or a light-transmitting member.
[0016] Beneficial effects of the utility model: the electric toothbrush of the utility model arranges the light source at the first end of the output shaft of the motor. There is no need to replace the light source when replacing the brush head, thereby reducing the cost of replacing the brush head. Moreover, the light source can be extended into the brush head together with the output shaft of the motor, close to the brush head and / or the output shaft where the photocatalyst structure is arranged, and the photocatalytic effect is good. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a three-dimensional structural schematic diagram of an electric toothbrush in an embodiment of the utility model;
[0018] Figure 2 It is a schematic diagram of the exploded structure of the electric toothbrush in the embodiment of the utility model;
[0019] Figure 3 is a partial cross-sectional view of an electric toothbrush in one embodiment of the utility model;
[0020] Figure 4 is a partial cross-sectional view of an electric toothbrush in another embodiment of the utility model;
[0021] Figure 5 is a partial cross-sectional view of an electric toothbrush in yet another embodiment of the utility model;
[0022] Figure 6 It is a position relationship diagram of the light source and the motor in the embodiment of the utility model;
[0023] Figure 7 yes Figure 6 Enlarged structural diagram at A in the middle.
[0024] In the figure:
[0025] 1. Brush head; 11. Brush head body; 111. Plug-in part; 112. Bristle implantation part; 12. Bristles; 1a. Notch; 1b. Mounting slot; 2. Brush handle; 3. Motor; 31. Output shaft; 3a. Accommodation slot; 4. Control circuit board; 5. Light source; 6. Electric wires; 7. Photocatalyst parts. DETAILED DESCRIPTION
[0026] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.
[0027] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0028] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.
[0029] In the description of this embodiment, the terms "upper", "lower", "left", "right", etc., and the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of description and simplified operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.
[0030] refer to Figure 1-Figure 7 As shown, in the embodiment of the utility model, an electric toothbrush is proposed, including a brush head 1, a brush handle 2, a motor 3, a light source 5, a control circuit board 4 and a photocatalyst structure, wherein the motor 3 is arranged inside the brush handle 2, the output shaft 31 of the motor 3 passes through the brush handle 2 and is inserted into the brush head 1 to drive the brush head 1 to vibrate, the brush head 1 includes a brush head body 11 and bristles 12, the bristles 12 are arranged at one end of the brush head body 11 away from the brush handle 2, the photocatalyst structure is arranged on the output shaft 31 of the brush head 1 and / or the motor 3 and exposed to the brush head 1 so as to be able to contact with water in the oral cavity, and the light source 5 is arranged at the first end of the output shaft 31 inserted into the brush head 1, so as to generate light irradiated on the photocatalyst structure to trigger the catalytic function of the photocatalyst structure. The control circuit board 4 is also located in the brush handle 2, and is electrically connected to the motor 3 and the light source 5, so as to control the motor 3 and the light source 5, such as controlling the start and stop of the motor 3, the vibration frequency of the motor 3 and the start and stop of the light source 5, etc. The control circuit board 4 belongs to the prior art, and its structure and control principle do not belong to the improvement of the present invention, and will not be described in detail in this embodiment. Usually, the control circuit board 4 is also electrically connected to a battery.
[0031] The above-mentioned electric toothbrush sets the light source 5 at the first end where the motor 3 is inserted into the brush head 1. Compared with integrating the light source 5 on the brush head 1, the user does not need to replace the light source 5 when replacing the brush head 1, which saves the cost of replacing the brush head 1. Moreover, the light source 5 can extend into the brush head 1 along the output shaft 31 of the motor 3, and is closer to the photocatalytic structure set on the brush head 1 and / or the output shaft 31, so the energy consumption is small and the photocatalytic effect is good.
[0032] refer to Figure 3 As shown, in one embodiment, the photocatalyst structure includes photocatalyst particles (e.g., silver-loaded titanium dioxide particles), and the photocatalyst particles can be added to the material used to make the bristles 12 when making the bristles 12, that is, multiple photocatalyst particles are embedded in the bristles 12, or the photocatalyst particles are added to the material used to make the brush head body 11, that is, multiple photocatalyst particles are embedded in the brush head body 11. Of course, the photocatalyst particles can also be embedded in the bristles 12 and the brush head body 11 at the same time.
[0033] It should be emphasized that at least part of the photocatalyst particles are exposed to the bristles 12 or the brush head body 11 so that the photocatalyst particles are in contact with the water in the oral cavity. At the same time, in order to make the light emitted by the light source 5 shine on the photocatalyst particles in the bristles 12 or the brush head body 11, the brush head body 11 is made of a transparent material. Specifically, the brush head body 11 is divided into a plug-in portion 111 and a hair-planting portion 112, wherein the plug-in portion 111 is provided with a slot for the output shaft 31 to be inserted, and the bristles 12 are fixed to the end of the hair-planting portion 112 away from the plug-in portion 111. The hair-planting portion 112 and the plug-in portion 111 can be integrally formed or separately provided, and at least the hair-planting portion 112 is embedded with photocatalyst particles.
[0034] refer to Figure 4 As shown, in another embodiment, the photocatalyst structure includes a photocatalyst part 7, the volume of the photocatalyst part 7 is larger than the volume of the photocatalyst particles, the photocatalyst part 7 is embedded in the side of the brush head body 11 facing away from the bristles 12, and the brush head body 11 is still made of a transparent material. Specifically, in order to reduce the foreign body sensation, a mounting groove 1b is provided on the side of the brush head body 11 facing away from the bristles 12, and the photocatalyst part 7 is fixedly installed in the mounting groove 1b and does not protrude from the brush head body 11.
[0035] refer to Figure 5 As shown, in another embodiment, the photocatalyst structure includes a photocatalyst coating. The photocatalyst coating can be coated on the surface of the output shaft 31 of the motor 3, or on the surface of the bristles 12 or the surface of the brush head body 11. Regardless of being coated on the surface of the bristles 12 or the surface of the brush head body 11, the brush head body 11 is made of transparent material.
[0036] Taking the case where the photocatalyst coating is coated on the surface of the output shaft 31 of the motor 3 as an example, a notch 1a is provided on the brush head body 11 at a position corresponding to the output shaft 31, so that the output shaft 31 is exposed to the brush head 1, and the light emitted by the light source 5 can be reflected by the oral cavity and irradiated on the photocatalyst coating on the surface of the output shaft 31. The water in the oral cavity contacts the surface of the output shaft 31 of the motor 3 through the notch 1a on the brush head 1, producing a photocatalytic effect, thereby achieving the purpose of sterilization and disinfection. Specifically, a plurality of notches 1a are provided along the circumference of the brush head body 11 to increase the contact area between the output shaft 31 and the water in the oral cavity, thereby enhancing the photocatalytic effect.
[0037] In other embodiments, the photocatalyst structure may also include one or more combinations of photocatalyst particles, photocatalyst parts 7 and photocatalyst coatings, which will not be described in detail herein.
[0038] It is understandable that the vibration of the brush head 1 is generated by the vibration of the output shaft 31 of the motor 3. In order to maintain the connection stability between the light source 5 and the output shaft 31, refer to Figure 7As shown, a first end of the output shaft 31 is provided with a receiving groove 3a, and the light source 5 is fixedly installed in the receiving groove 3a. The light source 5 is preferably a lamp bead, and more specifically, an LED lamp bead. At the same time, in order to realize the electrical connection between the light source 5 and the control circuit board 4 without affecting the vibration of the motor 3, the entire output shaft 31 is set to a hollow structure, and the wire 6 connected to the control circuit board 4 passes through the output shaft 31 and is connected to the light source 5.
[0039] Since the light source 5 is arranged in the receiving groove 3a, the brush head body 11 also needs to be made of a transparent material. The light emitted by the light source 5 shines on the inner wall of the oral cavity through the brush head body 11, and then reflects from the inner wall of the oral cavity through the gap 1a to shine on the photocatalyst coating on the surface of the output shaft 31 (if the light source 5 is not arranged in the receiving groove 3a, the light emitted by the light source 5 can shine into the oral cavity through the gap 1a and then be reflected from the inner wall of the oral cavity to the photocatalyst coating on the surface of the output shaft 31. The brush head body 11 is not necessarily made of a transparent material).
[0040] Specifically, in order to allow water in the oral cavity to smoothly pass through the notch 1a and contact the output shaft 31, the distance between the notch 1a and the end of the brush handle 2 and the bristles 12 is between 0-40 mm. When the user brushes his teeth, part of the notch 1a enters the oral cavity.
[0041] In order to prevent water in the oral cavity from flowing into the interior of the motor 3 through the output shaft 31, a seal is also provided at the notch of the accommodating groove 3a, that is, the end of the first end of the output shaft 31. The seal can seal the notch of the accommodating groove 3a, that is, the end of the first end of the output shaft 31.
[0042] Specifically, the sealant can be glue, which is set between the light source 5 and the gap between the receiving groove 3a, and can cooperate with the light source 5 to achieve the sealing of the notch of the receiving groove 3a, or the sealant can be a light-transmitting member including but not limited to transparent plastic, which blocks the light source 5 in the receiving groove 3a, and the light emitted by the light source 5 can pass through the light-transmitting member and irradiate the photocatalyst structure. It can be seen from this that arranging the light source 5 and the wire 6 for connecting the light source 5 with the control circuit board 4 in the output shaft 31 can not only ensure that the light source 5 is set at the position closest to the photocatalyst structure, but also only needs to seal the end of the first end of the output shaft 31 to achieve sealing, the sealing structure is simple, the effect is good, and it is also conducive to reducing costs.
[0043] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.
Claims
1. An electric toothbrush, comprising a brush head (1), a brush handle (2), a motor (3) and a control circuit board (4), wherein the motor (3) and the control circuit board (4) are electrically connected and are both located in the brush handle (2), an output shaft (31) of the motor (3) passes through the brush handle (2) and is inserted into the brush head (1) to drive the brush head (1) to vibrate, the brush head (1) comprising a brush head body (11) and bristles (12), the bristles (12) being arranged at one end of the brush head body (11) away from the brush handle (2), characterized in that: Also includes: A photocatalyst structure, the photocatalyst structure being arranged on the brush head (1) and / or the output shaft (31) and exposed on the brush head (1); A light source (5), wherein the light source (5) is arranged at the first end of the output shaft (31) inserted into the brush head (1) and is electrically connected to the control circuit board (4), and the light generated by the light source (5) can irradiate the photocatalyst structure.
2. The electric toothbrush according to claim 1, characterized in that: The photocatalyst structure comprises photocatalyst particles, a plurality of the photocatalyst particles are embedded on the bristles (12) and / or the brush head body (11), and the brush head body (11) is made of a transparent material.
3. The electric toothbrush according to claim 1, characterized in that: The photocatalyst structure comprises a photocatalyst part (7); a mounting groove (1b) is provided on the side of the brush head body (11) facing away from the bristles (12); the photocatalyst part (7) is embedded in the mounting groove (1b); and the brush head body (11) is made of a transparent material.
4. The electric toothbrush according to claim 1, characterized in that: The photocatalyst structure comprises a photocatalyst coating, and the photocatalyst coating is coated on one or more of the surfaces of the bristles (12) and the surface of the brush head body (11), and the brush head body (11) is made of a transparent material.
5. The electric toothbrush according to claim 1, characterized in that: The photocatalyst structure comprises a photocatalyst coating, which is coated on the surface of the output shaft (31), and a notch (1a) is provided on the brush head body (11) at a position corresponding to the output shaft (31).
6. The electric toothbrush according to claim 5, characterized in that: The distance between the end of the notch (1a) away from the brush handle (2) and the bristles (12) is between 0 and 40 mm.
7. The electric toothbrush according to any one of claims 1 to 6, characterized in that: The end portion of the first end of the output shaft (31) is provided with a receiving groove (3a), the light source (5) is placed in the receiving groove (3a), and the brush head body (11) is made of a transparent material.
8. The electric toothbrush according to any one of claims 1 to 6, characterized in that: The light source (5) is electrically connected to the control circuit board (4) via an electric wire (6); the output shaft (31) is configured as a hollow structure; the electric wire (6) passes through the output shaft (31) and is connected to the light source (5).
9. The electric toothbrush according to claim 8, characterized in that: Also included is a seal, which seals the first end of the output shaft (31).
10. The electric toothbrush according to claim 9, characterized in that: The sealing member is glue or a light-transmitting member.