Brush head assembly and electric toothbrush
By incorporating connecting wires and a main control circuit board into the brush head assembly of an electric toothbrush, the transmission of power and control signals is achieved, solving the problem of limited functionality in electric toothbrushes and enhancing their versatility.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XIAMEN SOLEX HIGH TECH INDUSTRIES CO LTD
- Filing Date
- 2025-07-31
- Publication Date
- 2026-07-10
AI Technical Summary
Existing electric toothbrushes have limited functionality, as the LED colors cannot be changed.
At least three connecting wires are set in the brush head assembly to connect the additional functional components and the main control circuit board, so as to realize the transmission of power signals and control signals and enrich the functions of the electric toothbrush.
By changing the state of additional functional components through control signals, the functionality of electric toothbrushes can be enhanced to meet diverse user needs.
Smart Images
Figure CN224474482U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of toothbrush technology, and in particular to a brush head assembly and an electric toothbrush. Background Technology
[0002] An electric toothbrush consists of a motor, brush head, and battery. The motor's rapid rotation or vibration drives the brush head to produce high-frequency vibrations, breaking down toothpaste into fine foam to clean between teeth, resulting in a more effective cleaning compared to a traditional toothbrush.
[0003] As consumers demand more diverse functions from electric toothbrushes, these brushes often include additional features beyond simply cleaning teeth, such as sterilization. One related technology proposes an electric toothbrush with LED beads on the brush head to achieve sterilization; however, the inability of these LED beads to change color limits the toothbrush's functionality. Utility Model Content
[0004] The purpose of this invention is to provide a brush head assembly and an electric toothbrush to solve the problem of limited functionality in electric toothbrushes.
[0005] To achieve this objective, the present invention adopts the following technical solution:
[0006] In a first aspect, this utility model provides a brush head assembly, including a brush head, an additional functional component, and at least three connecting lines, wherein the additional functional component is disposed on the brush head; and the connecting lines are all connected to the additional functional component for transmitting control signals and power signals.
[0007] Optionally, the brush head assembly has multiple mounting slots that correspond one-to-one with each of the connecting lines, and the mounting slots are spaced apart.
[0008] Optionally, the brush head includes a left brush body and a right brush body, which together form the mounting groove.
[0009] Optionally, the connecting line is connected to a first electrode, which is an elastic conductive element.
[0010] Secondly, this utility model provides an electric toothbrush, including a handle assembly and a brush head assembly as described in any of the above. The handle assembly includes a handle and a motor, a main control circuit board, and a battery built into the handle. The motor and the battery are both connected to the main control circuit board. The motor shaft of the motor passes through the handle and is inserted into the brush head. The connecting wire is connected to the main control circuit board.
[0011] Optionally, the brush handle assembly further includes a plurality of second electrodes corresponding one-to-one with each of the connecting lines. The second electrodes are connected to the main control circuit board via wires, and the connecting lines are connected to the main control circuit board via the second electrodes.
[0012] Optionally, at least a portion of the second electrode is an electrode block disposed on the motor shaft, with an insulating element disposed between adjacent electrode blocks.
[0013] Optionally, the second electrode is connected to the main control circuit board via a wire, the motor shaft has a hollow structure, and the wire passes through the motor shaft.
[0014] Optionally, the motor shaft is one of the second electrodes.
[0015] Optionally, at least a portion of the second electrode is disposed on the top of the brush handle.
[0016] Optionally, the second electrode disposed at the top of the brush handle is an elastic conductive element.
[0017] The beneficial effects of this utility model are as follows: The brush head assembly and electric toothbrush provided by this utility model are connected to the auxiliary functional components and the main control circuit board by setting at least three connecting lines. In addition to supplying power to the auxiliary functional components, the main control circuit board can also output control signals to them, thereby changing the functional state of the auxiliary functional components. The functions of the electric toothbrush are more abundant, which meets the diverse needs of users. Attached Figure Description
[0018] Figure 1 This is an exploded structural diagram of the electric toothbrush in Embodiment 1 of this utility model;
[0019] Figure 2 This is an exploded view of the brush head assembly in Embodiment 1 of this utility model;
[0020] Figure 3 This is a partial cross-sectional view of the electric toothbrush in Embodiment 2 of this utility model;
[0021] Figure 4 yes Figure 3 Enlarged view of point A in the middle;
[0022] Figure 5 This is an exploded view of the brush head assembly in Embodiment 3 of this utility model;
[0023] Figure 6 This is a schematic diagram of the structure of one of the brush handle components in Embodiment 3 of this utility model;
[0024] Figure 7 This is a schematic diagram of another brush handle assembly in Embodiment 3 of this utility model;
[0025] Figure 8 This is a schematic diagram of the structure of another brush handle assembly in Embodiment 3 of this utility model;
[0026] Figure 9 This is a diagram showing the correspondence between the first electrode and the second electrode in Embodiment 3 of this utility model.
[0027] In the picture:
[0028] 10. Brush head assembly; 11. Brush head; 111. Left brush body; 112. Right brush body; 113. Mounting slot; 12. Connecting wire; 13. Brush bristles; 14. Additional functional components; 15. First electrode; 16. First mounting base; 161. Guide groove; 20. Brush handle assembly; 21. Brush handle; 22. Main control circuit board; 23. Insulating component; 24. Motor; 241. Motor shaft; 25. Second electrode; 26. Second mounting base; 261. Guide block. Detailed Implementation
[0029] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.
[0030] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0031] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0032] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.
[0033] Example 1
[0034] refer to Figure 1 and Figure 2 As shown, this embodiment proposes a brush head assembly 10 and an electric toothbrush. The electric toothbrush includes a brush head assembly 10 and a handle assembly 20. The handle assembly 20 includes a handle 21, a motor 24 built into the handle 21, a main control circuit board 22, and a battery (not shown in the figure). The main control circuit board 22 and the motor 24 are both connected to the battery. The motor shaft 241 of the motor 24 extends out of the handle 21 and is inserted into the brush head assembly 10 to drive the brush head assembly 10 to vibrate. The brush head assembly 10 includes a brush head 11, an additional functional component 14, and at least three connecting wires 12. The additional functional component 14 is disposed on the side of the brush head 11 where the bristles 13 are disposed. The three connecting wires 12 are all connected to the additional functional component 14. At the same time, the three connecting wires 12 are also connected to the main control circuit board 22 to connect to the power supply through the main control circuit board 22, forming a power signal transmitted to the additional functional component 14, and simultaneously forming a control signal transmitted to the additional functional component 14. The additional functional component 14 is not limited to a lamp board; it can also be a heating resistor for drying the brush head 11 or an electrode plate for generating a stimulating current. For example, when the additional functional component 14 is an LED, the control signal can be used to control the intensity or color of the light emitted by the LED, and different intensities or colors of light will have different effects. Of course, one LED can be used, or multiple LEDs can be used.
[0035] The brush head assembly 10 contains at least three connecting wires 12, which can generate power signals and control signals between the auxiliary functional component 14 and the main control circuit board 22, thereby controlling the functional state of the auxiliary functional component 14 to change, making the electric toothbrush more functional and meeting the diverse needs of users.
[0036] Clearly, at least one connection line 12 can receive control signals from the main control circuit board 22. Taking a brush head assembly 10 with three connection lines 12 as an example... Figure 1 As shown, when the connecting lines 12 are connected to the same functional component, the three connecting lines 12 are used to transmit the positive power supply signal, the negative power supply signal, and the control signal, respectively. Alternatively, as... Figure 2As shown, when the three connecting lines 12 connect two different functional components, the three connecting lines 12 are used to transmit the positive power signal and the negative signals of the two functional components, thereby forming a power signal and a control signal.
[0037] Specifically, a first electrode 15 is provided on the connecting line 12, and a plurality of second electrodes 25 corresponding to each first electrode 15 are provided on the brush handle assembly 20. The second electrodes 25 are electrically connected to the main control circuit board 22 through wires. When the brush head assembly 10 is assembled on the brush handle assembly 20, the first electrodes 15 and the second electrodes 25 are electrically connected, thereby forming a complete circuit.
[0038] To facilitate periodic replacement of the brush head assembly, the first electrode 15 and the second electrode 25 are in contact. Specifically, the first electrode 15 and the second electrode 25 are in elastic contact to ensure effective contact between the first electrode 15 and the second electrode 25 while avoiding interference with the vibration of the brush head assembly 10. Furthermore, the first electrode 15 and / or the second electrode 25 are made of elastic conductive elements, which are not limited to springs, retaining rings, or spring sheets.
[0039] In the current embodiment, the motor shaft 241 is configured as a hollow structure, and the second electrode 25 is an electrode block fixedly disposed at the end of the motor shaft 241. The second electrode 25 is connected to the main control circuit board 22 through a wire passing through the motor shaft 241. It should be noted that different second electrodes 25 are separated by insulating components 23, while the first electrode 15 is made of an elastic conductive component. Based on this, multiple mutually separated mounting slots 113 are formed in the brush head 11 corresponding to each connecting wire 12. The connecting wire 12 and the first electrode 15 are both located in the mounting slots 113. The mounting slots 113 limit the connection wire 12 and the first electrode 15 to prevent the first electrodes 15 from coming into contact with each other and causing a short circuit.
[0040] refer to Figure 2 As shown, the brush head 11 includes a left brush body 111, a right brush body 112, and bristles 13. The bristles 13 are disposed on the right brush body 112 away from the left brush body 111. The left brush body 111 and the right brush body 112 together form a receiving mounting groove 113 to reduce the processing difficulty of the mounting groove 113. An additional functional component 14 is embedded in the right brush body 112.
[0041] Example 2
[0042] This embodiment also provides a brush head assembly 10 and an electric toothbrush, see reference. Figure 3 and Figure 4As shown, unlike the above embodiments, the motor shaft 241 is at least partially made of conductive material. For example, the outer surface of the motor shaft 241 is coated with a conductive coating. The motor shaft 241 is connected to a connecting line 12 and the main control circuit board 22. That is, the motor shaft 241 serves as a second electrode 25. Compared with using electrode blocks fixed on the motor shaft 241 as the second electrode 25, the manufacturing cost is lower.
[0043] Taking the example of three connecting lines 12, two second electrodes 25 are stacked along the axial direction of the motor shaft 241 at the end of the motor shaft 241. The second electrode 25 at the top of the motor shaft 241 is T-shaped, while the other second electrode 25 is annular, allowing the T-shaped second electrode 25 to pass into the motor shaft 241. In this case, the first electrode 15 connected to the T-shaped second electrode 25 can be a spring, while the other first electrodes 15 can be connected to the corresponding second electrodes 25 using retaining rings.
[0044] Example 3
[0045] This embodiment provides a brush head assembly 10 and an electric toothbrush, see reference. Figures 5-9 As shown, unlike Embodiment 1 and Embodiment 2, the second electrode 25 is disposed on the top of the brush handle 21.
[0046] Specifically, the second electrode 25 is also elastically connected to the first electrode 15, and the second electrode 25 and / or the first electrode 15 adopt elastic conductive elements such as spring needles and spring sheets. It is understood that the second electrode 25 may protrude from the brush handle 21, and correspondingly, the first electrode 15 may be disposed within a groove on the brush head 11 to improve the stability of the connection between the first electrode 15 and the second electrode 25; or, the second electrode 25 may be disposed within a groove on the top of the brush handle 21, while the first electrode 15 protrudes from the brush head 11; or, part of the second electrode 25 may protrude from the brush handle 21, while another part may be disposed within a groove on the top of the brush handle 21, with the first electrode 15 correspondingly positioned, protruding from or located within the brush head 11. Furthermore, to avoid short circuits caused by mutual contact between the second electrodes 25, the second electrodes 25 are spaced apart circumferentially.
[0047] In the current embodiment, in order to enable the brush head assembly 10 to stand upright, the second electrode 25 protrudes from the brush handle 21, while the first electrode 15 is located inside the brush head 11.
[0048] More specifically, to ensure effective contact between the second electrode 25 and the first electrode 15, multiple first electrodes 15 are disposed on a first mounting base 16 fixed within the brush head 11, and multiple second electrodes 25 are disposed on a second mounting base 26 fixed within the brush handle 21. One of the first mounting base 16 and the second mounting base 26 is provided with a guide block 261 extending along the axial direction of the motor shaft 241, and the other is provided with a guide groove 161. The guide block 261 is inserted into the guide groove 161 to guide the brush head 11 when it is assembled onto the brush handle 21. It is understood that, to avoid obstructing the motor shaft 241, both the first mounting base 16 and the second mounting base 26 are designed to be annular.
[0049] In the current embodiment, guide block 261 is disposed on second mounting base 26, and guide groove 161 is disposed on first mounting base 16. Two guide blocks 261 are disposed opposite each other on second mounting base 26, and two guide grooves 161 are also disposed opposite each other and located on the inner wall of first mounting base 16, so as to reduce the difficulty of inserting guide block 261 into guide groove 161.
[0050] Example 4
[0051] This embodiment provides a brush head assembly 10 and an electric toothbrush. Unlike the above embodiments, some of the second electrodes 25 are disposed on the motor shaft 241 and connected to the main control circuit board 22 through wires passing through the motor shaft 241. At the same time, some of the second electrodes 25 are disposed on the top of the brush handle 21 and contact the first electrode 15 disposed on the brush head 11.
[0052] It is understood that in this embodiment, the motor shaft 241 can also serve as the second electrode 25.
[0053] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.
Claims
1. A brush head assembly, characterized in that, include: Brush head (11); An additional functional component (14) is disposed on the brush head (11); At least three connecting lines (12) are connected to the additional functional component (14) for transmitting control signals and power signals.
2. The brush head assembly according to claim 1, characterized in that, The brush head assembly (10) is provided with a plurality of mounting slots (113) corresponding one-to-one with each of the connecting lines (12), and the mounting slots (113) are spaced apart.
3. The brush head assembly according to claim 2, characterized in that, The brush head (11) includes a left brush body (111) and a right brush body (112), which together form the mounting groove (113).
4. The brush head assembly according to claim 1, characterized in that, The connecting line (12) is connected to a first electrode (15), which is an elastic conductive element.
5. An electric toothbrush, characterized in that, The brush handle assembly (20) includes a brush head assembly (10) as described in any one of claims 1-4. The brush handle assembly (20) includes a brush handle (21) and a motor (24), a main control circuit board (22) and a battery built into the brush handle (21). The motor (24) and the battery are both connected to the main control circuit board (22). The motor shaft (241) of the motor (24) extends out of the brush handle (21) and is inserted into the brush head (11). The connecting wire (12) is connected to the main control circuit board (22).
6. The electric toothbrush according to claim 5, characterized in that, The brush handle assembly (20) also includes a plurality of second electrodes (25) corresponding one-to-one with each of the connecting lines (12), and the connecting lines (12) are connected to the main control circuit board (22) through the second electrodes (25).
7. The electric toothbrush according to claim 6, characterized in that, At least a portion of the second electrode (25) is an electrode block disposed on the motor shaft (241), and an insulating element (23) is disposed between adjacent electrode blocks.
8. The electric toothbrush according to claim 7, characterized in that, The second electrode (25) is connected to the main control circuit board (22) by a wire. The motor shaft (241) is a hollow structure, and the wire passes through the motor shaft (241).
9. The electric toothbrush according to claim 6, characterized in that, The motor shaft (241) is one of the second electrodes (25).
10. The electric toothbrush according to claim 6, characterized in that, At least a portion of the second electrode (25) is disposed on the top of the brush handle (21).
11. The electric toothbrush according to claim 10, characterized in that, The second electrode (25) located at the top of the brush handle (21) is an elastic conductive element.