Electric toothbrush

Abstract

The utility model discloses a kind of electric toothbrush, it is related to toothbrush technical field, electric toothbrush includes brush head, brush handle and detection component, brush head is connected in brush handle, and it can rotate relative to brush handle, brush handle includes shell, first support and second support, shell is formed with installation cavity, first support and second support are arranged in installation cavity along the length direction of shell, brush head is connected in first support, first support is movably connected with second support, and it can be mutually close or far away along the stress direction of brush head;Detection component is arranged in installation cavity, detection component includes inductive piece and control module, inductive piece is electrically connected with control module, and the change of distance between first support and second support can be detected and signal is transmitted to control module.

Description

Technical Field

[0001] This utility model relates to the field of toothbrush technology, and in particular to an electric toothbrush. Background Technology

[0002] An electric toothbrush is an oral hygiene tool that uses electricity to drive the brush head to vibrate or rotate, thereby helping users clean their teeth more efficiently and conveniently. Electric toothbrushes generally have a pressure sensing structure inside the handle to detect the pressure on the brush head. The existing pressure sensing structure directly installs the pressure sensor on the motor shaft, and detects the pressure on the brush head by the deformation of the motor shaft. In this way, the vibration during the toothbrush vibration process can be directly transmitted to the internal circuit board, which can easily cause mechanical wear inside the handle. Over time, this will affect the accuracy of the detection and the lifespan of the electric toothbrush. Utility Model Content

[0003] The main purpose of this invention is to provide an electric toothbrush that can detect and remind brushing pressure and reduce the impact of the detection component on the electric toothbrush.

[0004] To achieve the above objectives, the electric toothbrush proposed in this utility model includes:

[0005] Brush head;

[0006] A brush handle, wherein the brush head is connected to the brush handle and can rotate relative to the brush handle, the brush handle includes a housing, a first bracket and a second bracket, the housing forms a mounting cavity, the first bracket and the second bracket are disposed in the mounting cavity along the length direction of the housing, the brush head is connected to the first bracket, the first bracket and the second bracket are movably connected and can move closer or further away from each other along the direction of force applied to the brush head;

[0007] A detection component is disposed within the mounting cavity. The detection component includes a sensor and a control module. The sensor is electrically connected to the control module and can detect changes in the distance between the first bracket and the second bracket and transmit the signal to the control module.

[0008] In one embodiment, shaft holes are formed on opposite sides of the peripheral wall of the first bracket, and rotating shafts are provided on opposite sides of the peripheral wall of the second bracket. A rotating shaft is inserted into one of the shaft holes, so that when the brush head is subjected to force, the second bracket can move closer to or further away from the first bracket around the rotating shaft.

[0009] In one embodiment, the detection assembly further includes a motherboard, a spring arm, and a sensor. The first bracket and the second bracket partially overlap along the length of the housing. The spring arm is disposed at the overlapping portion of the first bracket and the second bracket, and its two ends along the length of the housing are respectively connected to the first bracket and the second bracket. The motherboard is connected to the side of the first bracket facing away from the spring arm. The sensor is connected to the motherboard and the spring arm. The sensor is used to detect the distance between itself and the sensor.

[0010] In one embodiment, the spring arm includes a mounting portion and a connecting portion connected to each other. The mounting portion has a mounting hole at one end near the sensing element, and the sensing element is engaged in the mounting hole. The connecting portion has a connecting arm along the length direction of the housing, and the connecting arm is respectively connected to the first bracket and the second bracket.

[0011] In one embodiment, the connecting arms include at least two.

[0012] In one embodiment, the connecting arm is a curved arm.

[0013] In one embodiment, the sensing element is a Hall sensor, and the sensing element is a magnet.

[0014] In one embodiment, the electric toothbrush further includes an alarm element electrically connected to the control module to issue an alarm based on the distance between the first bracket and the second bracket.

[0015] In one embodiment, the warning device is a warning light or a buzzer.

[0016] In one embodiment, a mounting groove is formed at the end of the first bracket away from the brush head for mounting a battery.

[0017] This invention provides an electric toothbrush, including a brush head, a handle, and a detection component. The brush head rotates relative to the handle under the drive of a motor, achieving rotational cleaning of teeth. The arrangement of the handle, first housing, second housing, and detection component allows for real-time detection of the force exerted on the brush head during brushing. The brush head is connected to a second support, converting the force into a distance between the first and second housings. A sensor detects changes in this distance and transmits the signal to the control module, enabling real-time monitoring of the brush head's force. This provides a foundation for intelligent control and feedback, and reduces the impact of brush head vibration on the mainboard. When excessive brushing force causes the distance between the supports to change beyond a certain range, the control module takes appropriate action, such as reminding the user to adjust the force, thereby improving comfort and safety, protecting oral health, and enhancing the scientific and effective nature of brushing, preventing damage to gums and tooth enamel due to excessive brushing force. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of an embodiment of the electric toothbrush provided by this utility model;

[0020] Figure 2 for Figure 1 Schematic diagram of the internal structure of a medium-sized electric toothbrush;

[0021] Figure 3 for Figure 2 A structural schematic diagram of a medium-sized electric toothbrush from another perspective;

[0022] Figure 4 for Figure 3 A partially enlarged schematic diagram of the structure at point A;

[0023] Figure 5 for Figure 3 A magnified view of the structure at point B in the middle;

[0024] Figure 6 for Figure 1 A cross-sectional view of a medium-sized electric toothbrush;

[0025] Figure 7 for Figure 6 A magnified view of the structure at point C;

[0026] Figure 8 for Figure 5 A schematic diagram of the structure of the projectile arm.

[0027] Explanation of icon numbers:

[0028] 100. Electric toothbrush; 1. Brush head; 2. Brush handle; 21. Housing; 22. First bracket; 221. Mounting slot; 23. Second bracket; 231. Rotating shaft; 3. Detection component; 31. Sensor; 32. Main board; 33. Spring arm; 331. Mounting part; 3311. Mounting hole; 332. Connecting part; 3321. Connecting arm; 34. Sensor; 4. Warning element; 5. Battery.

[0029] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0031] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0032] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0033] An electric toothbrush is an oral hygiene tool that uses electricity to drive the brush head to vibrate or rotate, thereby helping users clean their teeth more efficiently and conveniently. Electric toothbrushes generally have a pressure sensing structure inside the handle to detect the pressure on the brush head. The existing pressure sensing structure directly installs the pressure sensor on the motor shaft, and detects the pressure on the brush head by the deformation of the motor shaft. In this way, the vibration during the toothbrush vibration process can be directly transmitted to the internal circuit board, which can easily cause mechanical wear inside the handle. Over time, this will affect the accuracy of the detection and the lifespan of the electric toothbrush.

[0034] To solve the above problems, please refer to... Figures 1 to 8 This utility model proposes an electric toothbrush 100, including a brush head 1, a brush handle 2, and a detection component 3. The brush head 1 is connected to the brush handle 2 and can rotate relative to the brush handle 2. The brush handle 2 includes a housing 21, a first support 22, and a second support 23. The housing 21 forms a mounting cavity. The first support 22 and the second support 23 are disposed in the mounting cavity along the length direction of the housing 21. The brush head 1 is connected to the first support 22. The first support 22 and the second support 23 are movably connected and can move closer or further away from each other along the direction of force applied to the brush head 1. The detection component 3 is disposed in the mounting cavity. The detection component 3 includes a sensor 31 and a control module. The sensor 31 is electrically connected to the control module and can detect changes in the distance between the first support 22 and the second support 23 and transmit the signal to the control module.

[0035] The present invention provides an electric toothbrush 100, comprising a brush head 1, a handle 2, and a detection component 3. The brush head 1 can rotate relative to the handle 2 under the drive of a motor in the handle 2 to achieve rotational cleaning of the teeth. The arrangement of the handle 2, the first housing 21, the second housing 21, and the detection component 3 allows the force exerted on the brush head 1 during brushing to be detected in real time. The brush head 1 is connected to the second bracket 23, which converts the magnitude of the force exerted on the brush head 1 into the distance between the first housing 21 and the second housing 21. The sensor 31 detects the change in the distance between the first bracket 21 and the second bracket 23 and transmits the signal to the control module, realizing real-time monitoring of the force exerted on the brush head 1. This provides a basis for intelligent control and feedback and can reduce the impact of the vibration of the brush head 1 on the mainboard 32. Specifically, the control module can be a microcontroller or other types of control chip. The control module processes the detection signal of the sensor 31 and issues corresponding instructions to remind the user. When the brushing force is too strong and the distance between the brackets changes beyond a certain range, the control module will take appropriate action, such as reminding the user to adjust the force, thereby improving the comfort and safety of use and protecting oral health.

[0036] In an alternative embodiment, please refer to Figures 2 to 4To facilitate the movement of the second support 23 relative to the first support 22 when the brush head 1 is under force, shaft holes are formed on opposite sides of the peripheral wall of the first support 22, and rotating shafts 231 are provided on opposite sides of the peripheral wall of the second support 23. Each rotating shaft 231 is inserted into a corresponding shaft hole, allowing the second support 23 to move closer to or further away from the first support 22 around the rotating shaft 231 when the brush head 1 is under force. This mating structure of the rotating shaft 231 and the shaft hole provides a stable and defined mechanical connection for the relative movement between the first support 22 and the second support 23. When the brush head 1 is subjected to the reaction force of the teeth during brushing, the rotating shaft 231 can maintain relatively stable rotation within the shaft hole, making the movement of the second support 23 smoother and more controllable, thereby ensuring the accuracy of the detection component 3 in detecting the distance between the first support 22 and the second support 23. It also avoids problems such as brush head 1 shaking or jamming due to structural instability. This not only helps improve the stability and uniformity of the contact between the brush head 1 and the teeth, enhancing the cleaning effect, but also extends the service life of related parts of the electric toothbrush 100 and reduces damage caused by unnecessary stress concentration or excessive friction.

[0037] In an alternative embodiment, please refer to Figure 6 and Figure 7To facilitate accurate detection of the force applied to the brush head 1, the detection component 3 also includes a main board 32, a spring arm 33, and a sensor 34. The first bracket 22 and the second bracket 23 partially overlap along the length of the housing 21. The spring arm 33 is located at the overlapping part of the first bracket 22 and the second bracket 23, and the two ends of the spring arm 33 along the length of the housing 21 are respectively connected to the first bracket 22 and the second bracket 23. The main board 32 is connected to the side of the first bracket 22 facing away from the spring arm 33. The sensor 31 is connected to the main board 32, and the sensor 34 is connected to the spring arm 33. The sensor 31 is used to detect the distance between itself and the sensor 34. In this embodiment, the second bracket 23 is a motor bracket, and the motor is mounted on the motor bracket to drive the rotation of the brush head 1. One end of the spring arm 33 is connected to the motor bracket away from the tail of the brush head 1, and the other end is connected to the first bracket 22. When the brush head 1 is deformed by force, the spring arm 33 will also move accordingly. Since the two ends of the spring arm 33 are connected to the first bracket 22 and the second bracket 23 respectively, the intensity of the movement of the spring arm 33 and the instantaneous stress can be reduced to ensure the internal stability of the electric toothbrush 100. The elastic deformation of the spring arm 33 transmits the displacement changes caused by the relative movement between the first bracket 22 and the second bracket 23. When the brush head 1 is subjected to force, causing the distance between the brackets to change, the spring arm 33 deforms accordingly, thereby changing the relative position between the sensing element 34 and the sensing element 31. The sensing element 31 can accurately sense this small distance change and convert it into an electrical signal to be transmitted to the control module. Compared with the simple rigid connection detection method, this can more sensitively and accurately capture the dynamic changes in the distance between the brackets, improving the detection accuracy and reliability. The motherboard 32 is located on the side of the first bracket 22 facing away from the spring arm 33, which avoids mutual interference with the movement of the spring arm 33. At the same time, it is convenient to integrate and connect with other circuit components, which is conducive to realizing the intelligent control function of the electric toothbrush 100, such as adjusting the brushing mode in real time according to the detected distance changes, and providing intensity reminders, thereby improving the overall performance of the product and the user experience.

[0038] In an alternative embodiment, please refer to Figures 5 to 8The spring arm 33 includes a mounting portion 331 and a connecting portion 332 connected to each other. The mounting portion 331 has a mounting hole 3311 at one end near the sensor 31, where the sensor 34 is fitted. The connecting portion 332 has a connecting arm 3321 along the length of the housing 21, which connects to the first bracket 22 and the second bracket 23. This structural design gives the spring arm 33 better stability and strength when transmitting force and displacement. The mounting portion 331 provides a stable mounting base for the sensor 34, ensuring that the sensor 34 maintains good stability during the deformation of the spring arm 33, thereby ensuring the accuracy of the sensor 31's detection. The connecting arm 3321 of the connecting portion 332 connects to the first bracket 22 and the second bracket 23, ensuring effective force transmission. This allows the relative movement between the first bracket 22 and the second bracket 23 to be accurately converted into deformation of the spring arm 33, which is then detected by the sensor 34 and the sensor 31. This ensures that the electric toothbrush 100 can accurately sense the force applied to the brush head 1, providing better data support for subsequent intelligent control.

[0039] In an alternative embodiment, please refer to Figure 8 The connecting arms 3321 include at least two. The design of multiple connecting arms 3321 can more evenly distribute the forces interacting between the first support 22 and the second support 23. When the brush head 1 is under stress, each connecting arm 3321 can share the load, avoiding excessive deformation and fatigue damage to a single connecting arm 3321 due to excessive stress, thereby improving the service life and structural stability of the spring arm 33. Simultaneously, the arrangement of multiple connecting arms 3321 along the length of the housing 21 makes the relative movement between the supports smoother, reducing swaying and offset during movement, and ensuring that the distance change between the sensing element 34 and the sensing element 31 accurately reflects the actual distance change between the supports. For example, when the brush head 1 is subjected to horizontal or vertical force, the multiple connecting arms 3321 can disperse and transmit the force from different directions, making the deformation of the spring arm 33 more uniform and symmetrical, thereby improving the stability and consistency of the detection signal. This is beneficial for the control module to accurately interpret and process the signal, making the intelligent control function of the electric toothbrush 100 more precise and reliable, and better meeting the user's needs in different brushing scenarios.

[0040] Furthermore, the connecting arm 3321 is a curved arm. The curved arm can better adapt to different brushing angles and movement trajectories of the brush head 1 within the oral cavity, making the deformation of the spring arm 33 under force more consistent with the mechanical distribution law, reducing stress concentration, improving the fatigue life of the spring arm 33, and reducing the risk of fatigue fracture of the connecting arm 3321. Simultaneously, the curved arm can also optimize the elastic characteristics of the spring arm 33, making its deformation more linear and uniform within a certain force range, thereby improving the accuracy of distance detection between the sensing element 34 and the sensing element 31. In this embodiment, the connecting arms 3321 are curved arms, and there are two of them. The two connecting arms 3321 are symmetrically arranged on both sides of the connecting part 332 to ensure uniform force distribution, absorb the instantaneous vibration force of the brush handle 2, and help reduce the risk of fatigue fracture of the connecting arm 3321.

[0041] In an alternative embodiment, please refer to Figure 1 , Figure 2 , Figure 6 as well as Figure 7 The sensing element 31 is a Hall sensor, and the sensing element 34 is a magnet. As a high-precision, high-sensitivity magnetic sensor, the Hall sensor can accurately detect changes in magnetic field strength. When the sensing element 34 is a magnet, it is mounted on the spring arm 33. As the spring arm 33 deforms due to the relative movement between the supports, the distance between the magnet and the Hall sensor changes, resulting in a change in magnetic field strength at the Hall sensor. The Hall sensor can convert this minute change in magnetic field into an electrical signal, achieving high-precision detection of changes in the distance between the supports. Compared to other types of sensors, the combination of the Hall sensor and the magnet has the advantage of non-contact measurement, avoiding the impact of mechanical wear on measurement accuracy. It also has high reliability and stability, maintaining good performance even during long-term, frequent use of the electric toothbrush 100. Furthermore, this combination features a fast response speed, capable of capturing rapid changes in the distance between the supports when the brush head 1 is subjected to force, providing timely and accurate feedback to the control module. This enables precise intelligent control functions, such as real-time monitoring of brushing force and timely reminders to the user to adjust, effectively preventing damage to gums and teeth due to excessive brushing force, and improving the health and comfort of oral care. In other embodiments, the sensing element 31 can also be other sensors capable of measuring distance, such as infrared ranging sensors or laser sensors, which can be selected according to actual needs.

[0042] To help remind users based on brushing pressure during brushing, please refer to... Figure 3 , Figure 4 as well as Figure 6The electric toothbrush 100 also includes an alarm element 4, which is electrically connected to the control module to issue an alarm based on the distance between the first support 22 and the second support 23. This design adds an important user feedback function to the electric toothbrush 100. When the brush head 1 is subjected to force that causes a change in the distance between the first support 22 and the second support 23, the control module can promptly detect this signal and trigger the alarm element 4 to issue a warning. For example, if the user accidentally applies too much force while brushing, causing the distance between the supports to exceed the normal range, the alarm element 4 can immediately remind the user to adjust the brushing force to avoid damage to the teeth and gums. This not only helps cultivate correct brushing habits in users but also effectively improves the safety of oral care. Moreover, the alarm element 4 makes the electric toothbrush 100 more intelligent and user-friendly, allowing users to adjust their brushing method in real time based on the alarm prompts, improving brushing effectiveness, and also helping to extend the lifespan of the electric toothbrush 100.

[0043] Optionally, the warning element 4 can be a warning light or a buzzer. The warning light alerts the user by emitting light, offering a direct and conspicuous visual effect. During brushing, the user can easily observe the warning light illuminate, even in noisy environments, and promptly notice any issues with brushing pressure. Furthermore, the warning light can be designed with different flashing frequencies and colors to convey richer warning information depending on the situation. In this embodiment, the warning element 4 is a warning light, located at the end of the brush handle 2 near the brush head 1. It is a light strip structure housed within the casing 21, with the outer casing 21 designed to be translucent corresponding to the light strip position for easy observation by the user. A green light flashes when brushing pressure is appropriate, a yellow light flashes slowly when brushing pressure is slightly excessive, and a red light flashes rapidly when brushing pressure is severely excessive. The buzzer alerts the user by emitting sound, offering the advantage of timely reminders even when the user's gaze is not on the electric toothbrush 100, making it particularly suitable for situations with low light or when the user's attention is distracted. Furthermore, the buzzer's sound, tone, volume, and duration can be customized for more precise warning effects. Both the warning light and the buzzer further enrich the warning functions of the Electric Toothbrush 100, allowing users to choose the appropriate warning method according to their preferences and actual usage scenarios. This enhances the warning function, improves the user experience and practicality of the Electric Toothbrush 100, and ensures the safety and effectiveness of oral care.

[0044] In an alternative embodiment, please refer to Figure 2 and Figure 3The first bracket 22 has a mounting groove 221 at the end furthest from the brush head 1 for mounting the battery 5. Positioning the battery mounting groove 221 at the end of the first bracket 22 furthest from the brush head 1 allows the battery 5 to be relatively concentrated and close to the rear of the handle 2, optimizing the overall center of gravity distribution of the electric toothbrush 100. This makes the brush head 1 more flexible and easier to control during use, improving user comfort and convenience. Furthermore, this integrated mounting method fully utilizes the internal space of the handle 2, avoiding the obtrusiveness and unsightly appearance of an additional battery compartment. It also facilitates the installation, removal, and replacement of the battery 5. For example, when replacing the battery 5, the user can operate directly from the first bracket 22 at the rear of the handle 2 without disassembling the entire handle 2 structure, improving ease of use and maintenance. Furthermore, the placement of the battery 5 mounting slot 221 facilitates connection and integration with other electronic components such as control modules and detection components 3, making circuit wiring easier, reducing circuit complexity and mutual interference, improving the compactness and reliability of the internal structure of the electric toothbrush 100, thereby enhancing the overall performance and market competitiveness of the product.

[0045] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. An electric toothbrush, characterized in that, include: Brush head; A brush handle, wherein the brush head is connected to the brush handle and can rotate relative to the brush handle, the brush handle includes a housing, a first bracket and a second bracket, the housing forms a mounting cavity, the first bracket and the second bracket are disposed in the mounting cavity along the length direction of the housing, the brush head is connected to the first bracket, the first bracket and the second bracket are movably connected and can move closer or further away from each other along the direction of force applied to the brush head; A detection component is disposed within the mounting cavity. The detection component includes a sensor and a control module. The sensor is electrically connected to the control module and can detect changes in the distance between the first bracket and the second bracket and transmit the signal to the control module.

2. The electric toothbrush as described in claim 1, characterized in that, The first bracket has shaft holes on opposite sides of its peripheral wall, and the second bracket has rotating shafts on opposite sides of its peripheral wall. A rotating shaft is inserted into one of the shaft holes so that when the brush head is subjected to force, the second bracket can move closer to or further away from the first bracket around the rotating shaft.

3. The electric toothbrush as described in claim 1 or 2, characterized in that, The detection assembly further includes a motherboard, a spring arm, and a sensor. The first bracket and the second bracket partially overlap along the length of the housing. The spring arm is located at the overlapping portion of the first bracket and the second bracket, and both ends of the spring arm along the length of the housing are connected to the first bracket and the second bracket, respectively. The motherboard is connected to the side of the first bracket facing away from the spring arm. The sensor is connected to the motherboard and the spring arm. The sensor is used to detect the distance between itself and the sensor.

4. The electric toothbrush as described in claim 3, characterized in that, The spring arm includes an installation part and a connecting part that are connected to each other. The installation part has an installation hole at one end near the sensing element, and the sensing element is engaged in the installation hole. The connecting part has a connecting arm along the length of the housing, and the connecting arm is connected to the first bracket and the second bracket respectively.

5. The electric toothbrush as described in claim 4, characterized in that, The connecting arms include at least two.

6. The electric toothbrush as described in claim 4, characterized in that, The connecting arm is a curved arm.

7. The electric toothbrush as described in claim 4, characterized in that, The sensing element is a Hall sensor, and the sensing element is a magnet.

8. The electric toothbrush as described in claim 4, characterized in that, The electric toothbrush also includes an alarm component, which is electrically connected to the control module to issue an alarm based on the distance between the first bracket and the second bracket.

9. The electric toothbrush as described in claim 8, characterized in that, The warning device is a warning light or a buzzer.

10. The electric toothbrush as described in claim 8, characterized in that, The first bracket has a mounting groove at the end away from the brush head for mounting a battery.

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