Rotation-controlled key-free electric toothbrush

Abstract

The utility model discloses a rotationally-controlled key-free electric toothbrush which comprises a brush head and a handle, the handle comprises a main control chip, a battery, an attitude gyroscope, a motor, a rotation setting assembly and a pressure sensor; a motor shaft is connected with the brush head; the posture gyroscope is used for waking up the toothbrush; the rotation setting assembly is used for sending corresponding electric signals to the main control chip according to different rotation angles; the main control chip is used for carrying out corresponding setting on the electric signal so as to control the motor to operate correspondingly; the pressure sensor is attached to a motor shaft and used for controlling starting or stopping of the motor. According to the whole process, necessary operations such as full-automatic awakening, setting, starting and stopping are achieved, keys are completely not needed, and therefore the shell of the handle can be a totally-closed shell, the waterproof effect is improved, dirt which is difficult to clean is prevented from being contained in a traditional key, and the sanitation degree of the toothbrush in the using process is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric toothbrushes, in particular to a buttonless electric toothbrush with rotation control.

Background Art

[0002] With the increasing emphasis on teeth by people, as a toothbrush with higher brushing efficiency and effect, electric toothbrushes have been widely used. Traditional electric toothbrushes mostly use buttons for function settings, which have problems such as poor waterproof effect, difficult dirt cleaning, and limitations in the design of the shape and materials. For example, in order to leave design space for the buttons, the handle cannot use an integrated housing.

[0003] In view of this, it is necessary to provide a buttonless electric toothbrush with rotation control to overcome the above defects.

Content of the Utility Model

[0004] The purpose of the utility model is to provide a buttonless electric toothbrush with rotation control, aiming to improve the problems existing in traditional electric toothbrushes, such as poor waterproof effect, difficult dirt cleaning, and limitations in the design of the shape and materials, and to achieve setting operations without buttons.

[0005] To achieve the above purpose, the utility model provides a buttonless electric toothbrush with rotation control, including a toothbrush head and a handle; the handle includes a main control chip, as well as a battery, an attitude gyroscope, a motor, a rotation setting component, and a pressure sensor, all of which are electrically connected to the main control chip;

[0006] The battery is used to provide power for the main control chip, the attitude gyroscope, the motor, and the pressure sensor;

[0007] The motor is provided with a motor shaft, and the motor shaft is connected to the toothbrush head;

[0008] The attitude gyroscope is used to detect the attitude of the handle, and when it detects the movement and tilt of the handle, it sends a signal to the main control chip to wake up the toothbrush;

[0009] The rotation setting component is used to send corresponding electrical signals to the main control chip according to different rotation angles when rotating the toothbrush head to drive the motor shaft to rotate;

[0010] The main control chip is used to perform corresponding settings according to the electrical signals sent by the rotation setting component to control the corresponding operation of the motor;

[0011] The pressure sensor is attached to the motor shaft and is used to detect the pressure received by the toothbrush head when brushing teeth and send the corresponding pressure value to the main control chip to control the start or stop of the motor.

[0012] In a preferred embodiment, the rotation setting component includes an induction circuit and an amplification circuit; when the rotating brush head drives the motor shaft to rotate, the induction circuit is used to sense the induced electrical signal generated by the motor through self-generation and transmit it to the amplification circuit, and the amplification circuit is used to amplify the induced electrical signal and then transmit it to the main control chip.

[0013] In a preferred embodiment, the rotation setting component includes an induction magnet and a plurality of Hall sensors. The induction magnet is sleeved on the motor shaft, and the plurality of Hall sensors are arranged around the induction magnet; when the motor shaft rotates to drive the induction magnet to rotate, the plurality of Hall sensors output different voltage signals to the main control chip according to the detected change in the pole position.

[0014] In a preferred embodiment, the handle includes an upper bracket and a lower bracket respectively provided at both ends of the motor; the upper bracket is provided with a first bearing groove, and the lower bracket is provided with a second bearing groove; the motor shaft is sleeved with a first bearing and a second bearing at both ends of the motor respectively, the first bearing is installed in the first bearing groove, and the second bearing is installed in the second bearing groove.

[0015] In a preferred embodiment, a preset part of the motor shaft is recessed inward to form a fixed plane; a fixing piece is further provided on the fixed plane, and the fixing piece is installed in the upper bracket; the fixing piece is used to limit and attach the pressure sensor to the fixed plane.

[0016] In a preferred embodiment, the upper bracket is provided with a first avoidance hole, the fixing piece is provided with a second avoidance hole, one end of the pressure sensor is connected to a wire, and the end of the wire away from the pressure sensor sequentially passes through the second avoidance hole, the first avoidance hole and then is electrically connected to the main control chip.

[0017] In a preferred embodiment, a rubber sleeve is sleeved on one end of the upper bracket close to the brush head, and an installation block is provided on one side of the rubber sleeve away from the upper bracket. The installation block is used for threaded connection with the outer shell of the handle and presses the rubber sleeve on the upper bracket; a sealing film is further provided at one end of the installation block away from the rubber sleeve, and the inner wall of the through hole of the sealing film is tightly sleeved on a predetermined position of the motor shaft.

[0018] In a preferred embodiment, a circle of indicator lights is provided on the periphery of the installation block. The indicator lights are connected to the main control chip and are used to light up when the toothbrush is awakened and / or give corresponding prompts when in different modes or vibration intensities.

[0019] In a preferred embodiment, a positioning bump is provided at the edge of the brush head near the handle side.

[0020] In a preferred embodiment, a charging interface or an inductive charging coil electrically connected to the battery is provided at one end of the handle away from the brush head.

[0021] The rotation-controlled keyless electric toothbrush provided by the present utility model judges whether the user needs to use the toothbrush through an attitude gyroscope, so as to wake up the toothbrush; the rotation action of the brush head is recognized by rotating the setting component, so as to perform corresponding setting operations through the main control chip; the main control chip controls the motor to start or stop according to the pressure value sensed by the pressure sensor. The whole process realizes necessary operations such as fully automatic wake-up, setting, start and stop, and completely eliminates the need to use buttons. Therefore, the outer shell of the handle can adopt a fully enclosed outer shell, improving the waterproof effect and avoiding dirt that is difficult to clean in traditional buttons, thus improving the hygiene level during toothbrush use.

Description of the Drawings

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required to be used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present utility model, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0023] Figure 1 It is a three-dimensional view of the rotation-controlled keyless electric toothbrush provided by the present utility model;

[0024] Figure 2 For Figure 1 It is a three-dimensional exploded view of the rotation-controlled keyless electric toothbrush shown;

[0025] Figure 3 For Figure 2 It is a three-dimensional view of the inside of the handle shown;

[0026] Figure 4 For Figure 3 It is a three-dimensional exploded view of the inside of the handle shown;

[0027] Figure 5 For Figure 4 It is a three-dimensional exploded view of the vicinity of the upper bracket inside the handle shown;

[0028] Figure 6 For Figure 4 It is a three-dimensional exploded view of the vicinity of the lower bracket inside the handle shown.

[0029] Reference numerals in the figures: 100, rotation-controlled keyless electric toothbrush; 10, brush head; 11, positioning bump;

[0030] 20. Handle; 21. Housing; 22. Main control chip; 23. Battery; 24. Motor; 25. Pressure sensor; 26. Motor shaft; 261. First bearing; 262. Second bearing; 263. Fixed plane;

[0031] 27. Upper bracket; 271. First bearing groove; 272. Rubber sleeve; 273. Mounting block; 274. Sealing film; 2741. Through hole; 275. Indicator light; 276. Fixed piece; 277. First avoidance hole; 278. Second avoidance hole;

[0032] 28. Lower bracket; 281. Second bearing groove; 29. Wire; 31. Inductive magnet; 32. Hall sensor.

Detailed implementation manners

[0033] In order to make the objectives, technical solutions and beneficial technical effects of the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and specific implementation manners. It should be understood that the specific implementation manners described in this specification are only for explaining the present utility model, rather than limiting the present utility model.

[0034] It should also be understood that the terms used in this specification of the present utility model are only for the purpose of describing specific embodiments and are not intended to limit the present utility model. As used in this specification of the present utility model and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include the plural forms.

[0035] It should be further understood that the term " / and" used in this specification of the present utility model and the appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0036] In an embodiment of the present utility model, a rotation-controlled keyless electric toothbrush 100 is provided, which is used to cancel the keys of a traditional electric toothbrush and can achieve the original usage functions, so as to obtain various advantages after canceling the keys, such as a high waterproof non-porous housing, avoiding dirt accumulation in key gaps, and more choices in appearance, etc.

[0037] As Figures 1-6 shown, the rotation-controlled keyless electric toothbrush 100 includes a toothbrush head 10 and a handle 20.

[0038] The handle 20 includes a housing 21, a main control chip 22 disposed inside the housing 21, and a battery 23, an attitude gyroscope (not shown in the figure), a motor 24, a rotation setting assembly, and a pressure sensor 25 that are all electrically connected to the main control chip 22.

[0039] In this embodiment, the battery 23 is a conventional rechargeable cylindrical battery, which is disposed in the lower half of the handle 20 and is used to supply power to electronic components such as the main control chip 22, the attitude gyroscope, the motor 24, and the pressure sensor 25. Further, a charging interface or an inductive charging coil (not shown in the figure) electrically connected to the battery 23 is provided at one end of the handle 20 away from the brush head 10. The charging interface can be a Type-C, USB, or other interface, which is used to connect to an external power supply through a charging cable to charge the battery 23. The inductive charging coil is used to connect to the charging coil of the external power supply to achieve wireless charging of the battery 23.

[0040] The motor 24 is provided with a motor shaft 26. The motor 24 can drive the motor shaft 26 to vibrate, thereby driving the brush head 10 to realize the brushing function. It should be noted that the specific structure and implementation principle of the motor 24 can refer to the prior art, and the present invention is not limited thereto. The motor shaft 26 passes through the motor 24, and both ends extend out of the upper and lower ends of the motor 24.

[0041] One end of the motor shaft 26 is connected to the brush head 10, thereby driving the brush head 10 to operate. When the user rotates the brush head 10, it will drive the motor shaft 26 to rotate relative to the motor 24. Therefore, operations such as mode selection or intensity selection can be achieved by rotating the brush head 10 to the left or right. Further, a positioning convex block 11 is provided at the edge of the brush head 10 close to the handle 20, so that when the user rotates the brush head 10, the direction and angle of rotation of the brush head 10 can be judged according to the position of the positioning convex block 11.

[0042] In the embodiment of the present invention, the handle 20 includes an upper bracket 27 and a lower bracket 28 respectively disposed at both ends of the motor 24. The upper bracket 27 and the lower bracket 28 can jointly fix the motor 24. Among them, the upper bracket 27 is provided with a first bearing groove 271, and the lower bracket 28 is provided with a second bearing groove 281. First bearings 261 and second bearings 262 are respectively sleeved at both ends of the motor shaft 26 in the motor 24. The first bearing 261 is installed in the first bearing groove 271, and the second bearing 262 is installed in the second bearing groove 281, so as to prevent the part of the motor shaft 26 in the motor 24 from swinging during rotation.

[0043] Further, a rubber sleeve 272 is sleeved on one end of the upper bracket 27 close to the brush head 10. The motor shaft 26 passes through the center of the rubber sleeve 272, and the rubber sleeve 272 tightly wraps the motor shaft 26 to improve the waterproof performance of the upper bracket 27. An installation block 273 is provided on one side of the rubber sleeve 272 away from the upper bracket 27. The installation block 273 is used for threaded connection with the housing 21 of the handle 20, so as to close the housing 21 of the handle 20 and can press the rubber sleeve 272 onto the upper bracket 27 to fix the rubber sleeve 272. Wherein, a sealing film 274 is further provided at one end of the installation block 273 away from the rubber sleeve 272. The sealing film 274 is fixed on the top of the installation block 273 and has a through hole 2741 in the center. The inner wall of the through hole 2741 has a certain elasticity, so as to be sleeved on a predetermined position of the motor shaft 26 to further improve the waterproof performance of the top of the handle 20.

[0044] In an embodiment of the present invention, the attitude gyroscope is used to detect the attitude of the handle 20. Since the toothbrush of the present invention has no buttons, when it is detected that the handle 20 moves and tilts, it indicates that the user has picked up the toothbrush at this time, and it is possible to brush teeth next. Therefore, at this time, the attitude gyroscope sends a signal to the main control chip 22 according to its own attitude change (for example, the amplitude of the attitude change exceeds a preset threshold) to wake up the toothbrush. It should be noted that the specific structure and implementation principle of the attitude gyroscope can refer to the prior art and will not be elaborated here. In addition, if there is no operation on the brush head 10 within a certain time (for example, 1 minute) after the toothbrush is awakened, the toothbrush will go back to sleep and enter the attitude judgment process again.

[0045] Further, a circle of indicator lights 275 is provided on the peripheral side of the installation block 273. The indicator lights 275 are connected to the main control chip 22 and are used to light up when the toothbrush is awakened and / or give corresponding prompts when in different modes or vibration intensities (such as lighting different colors, color switching, gradient colors, light flashing, etc.), so as to facilitate the user to intuitively observe the current state of the toothbrush, changes in setting operations, etc. during operation.

[0046] In an embodiment of the present invention, the rotation setting assembly is used to send corresponding electrical signals (voltage or current) to the main control chip 22 according to different rotation angles when the rotation of the brush head 10 drives the motor shaft 26 to rotate. Specifically, it can be realized in two ways.

[0047] In the first implementation, the rotation setting component includes an induction circuit and an amplification circuit (not shown in the figure). When the rotating brush head 10 drives the motor shaft 26 to rotate, the motor 24 generates a weak induced electrical signal (voltage / current) through the principle of self-generation. The induction circuit is used to sense the induced electrical signal generated by the self-generation of the motor 24 and transmit it to the amplification circuit, and the amplification circuit is used to amplify the weak induced electrical signal and then transmit it to the main control chip 22. The main control chip 22 reads the signal processed by the amplification circuit and makes corresponding settings. It should be noted that when the motor shaft 26 rotates to different angles, the voltage and current generated by the self-generation of the motor 24 will correspondingly be different. Therefore, a one-to-one mapping between the induced electrical signal and the settings of the main control chip 22 can be established in advance to replace the traditional button settings.

[0048] In the second implementation, the rotation setting component includes a non-circular induction magnet 31 and a plurality of Hall sensors 32. The induction magnet 31 is sleeved on the motor shaft 26. For example, as Figure 6 shown, the induction magnet 31 is arranged on the side of the motor shaft 26 away from the brush head 10. The plurality of Hall sensors 32 are arranged around the induction magnet 31. When the motor shaft 26 rotates to drive the induction magnet 31 to rotate to change the position of the magnetic poles, the plurality of Hall sensors 32 output different voltage signals to the main control chip 22 according to the detected change in the magnetic pole position. It should be noted that the correspondence between the change in the magnetic poles of the induction magnet 31 and the different voltage signals detected by the Hall sensors 32 can be obtained through pre-testing and stored in advance in the main control chip 22 or a storage medium.

[0049] In this embodiment, the main control chip 22 is used to make corresponding settings according to the electrical signals sent by the rotation setting component to control the corresponding operation of the motor 24. That is, the user can send different setting instructions to the main control chip 22 by rotating the brush head 10 at different angles, realizing various functions such as mode switching and intensity adjustment of the traditional buttons.

[0050] Combined with Figure 4 and Figure 5 shown, the probe of the pressure sensor 25 is attached to the motor shaft 26 and is used to detect the pressure received by the brush head 10 when brushing teeth and send the corresponding pressure value to the main control chip 22 to control the start or stop of the motor 24.

[0051] Specifically, a preset portion of the motor shaft 26 is recessed inward to form a fixing plane 263. A fixing piece 276 is further provided on the fixing plane 263, and the fixing piece 276 is installed in the upper bracket 27. The fixing piece 276 is used to limit and attach the pressure sensor 25 to the fixing plane 263. It can be understood that when the user presses the brush head 10 against the teeth and applies a little pressure, the teeth will apply a reaction force to the brush head 10 and the motor shaft 26. Since the fixing piece 276 is fixed in the upper bracket 27, a pressure will be generated between the motor shaft 26 and the fixing piece 276, and this pressure will press the probe of the pressure sensor 25 against the fixing plane 273, so as to be sensed by the pressure sensor 25. It should be noted that only when the detected pressure value exceeds a preset pressure threshold, the main control chip 22 will consider it as a valid instruction and then control the start or stop of the motor 24.

[0052] Further, the upper bracket 27 is provided with a first avoidance hole 277, and the fixing piece 276 is provided with a second avoidance hole 278. One end of the pressure sensor 25 is connected to one end of the wire 29, and the end of the wire 29 away from the pressure sensor 25 sequentially passes through the second avoidance hole 278 and the first avoidance hole 277 and then is electrically connected to the main control chip 22, so as to realize the electrical connection of the pressure sensor 25.

[0053] In summary, for the rotation control non-button electric toothbrush 100 provided by the present invention, the attitude gyroscope is used to judge whether the user needs to use the toothbrush, so as to wake up the toothbrush; the rotation setting component is used to identify the rotation action of the brush head 10, so as to perform corresponding setting operations through the main control chip 22; the main control chip 22 controls the start or stop of the motor 24 through the pressure value sensed by the pressure sensor 25. The whole process realizes necessary operations such as fully automatic wake-up, setting, start and stop, and completely eliminates the need to use buttons. Therefore, the outer shell 21 of the handle 20 can adopt a fully enclosed outer shell, improving the waterproof effect and avoiding dirt that is difficult to clean in traditional buttons, thus improving the hygiene level when using the toothbrush.

[0054] The present invention is not limited only to what is described in the specification and embodiments. Therefore, for those skilled in the art, additional advantages and modifications can be easily achieved. Thus, without departing from the spirit and scope of the general concept defined by the claims and their equivalents, the present invention is not limited to specific details, representative devices, and the illustrated examples shown and described herein.

Claims

1. A buttonless electric toothbrush with rotational control, characterized in that It includes a brush head and a handle; the handle includes a main control chip, as well as a battery, an attitude gyroscope, a motor, a rotation setting component, and a pressure sensor that are all electrically connected to the main control chip; The battery is used to provide power for the main control chip, the attitude gyroscope, the motor, and the pressure sensor; The motor is provided with a motor shaft, and the motor shaft is connected to the brush head; The attitude gyroscope is used to detect the attitude of the handle. When it detects the movement and tilt of the handle, it sends a signal to the main control chip to wake up the toothbrush; The rotation setting component is used to send corresponding electrical signals to the main control chip according to different rotation angles when rotating the brush head to drive the motor shaft to rotate; The main control chip is used to make corresponding settings according to the electrical signals sent by the rotation setting component to control the corresponding operation of the motor; The pressure sensor is attached to the motor shaft and is used to detect the pressure received by the brush head during brushing and send the corresponding pressure value to the main control chip to control the start or stop of the motor.

2. The rotation-controlled keyless electric toothbrush according to claim 1, wherein The rotation setting component includes an induction circuit and an amplification circuit; when rotating the brush head to drive the motor shaft to rotate, the induction circuit is used to sense the induced electrical signal generated by the motor through self-generation and transmit it to the amplification circuit, and the amplification circuit is used to amplify the induced electrical signal and then transmit it to the main control chip.

3. The rotation-controlled keyless electric toothbrush according to claim 1, wherein, The rotation setting component includes an induction magnet and a plurality of Hall sensors. The induction magnet is sleeved on the motor shaft, and the plurality of Hall sensors are arranged around the induction magnet; when the motor shaft rotates to drive the induction magnet to rotate, the plurality of Hall sensors output different voltage signals to the main control chip according to the detected change in the magnetic pole position.

4. The rotation-controlled keyless electric toothbrush according to claim 1, wherein The handle includes an upper bracket and a lower bracket respectively arranged at both ends of the motor; the upper bracket is provided with a first bearing groove, and the lower bracket is provided with a second bearing groove; the motor shaft is sleeved with a first bearing and a second bearing at both ends of the motor respectively, the first bearing is installed in the first bearing groove, and the second bearing is installed in the second bearing groove.

5. The rotation-controlled keyless electric toothbrush according to claim 4, wherein, A preset part of the motor shaft is recessed inward to form a fixed plane; a fixing piece is also provided on the fixed plane, and the fixing piece is installed in the upper bracket; the fixing piece is used to limit and attach the pressure sensor to the fixed plane.

6. The rotationally controlled keyless electric toothbrush according to claim 5, wherein, The upper bracket is provided with a first avoidance hole, and the fixing piece is provided with a second avoidance hole. One end of the pressure sensor is connected to a wire, and the end of the wire away from the pressure sensor sequentially passes through the second avoidance hole, the first avoidance hole and then is electrically connected to the main control chip.

7. The rotation-controlled keyless electric toothbrush according to claim 4, wherein A rubber sleeve is sleeved on one end of the upper bracket close to the brush head. An installation block is provided on one side of the rubber sleeve away from the upper bracket. The installation block is used to be threadedly connected to the housing of the handle and press the rubber sleeve on the upper bracket; a sealing film is also provided at one end of the installation block away from the rubber sleeve, and a through hole is provided in the sealing film, and the inner wall of the through hole is tightly sleeved on a predetermined position of the motor shaft.

8. The rotationally controlled keyless electric toothbrush according to claim 7, wherein, A circle of indicator lights is provided on the periphery of the mounting block, and the indicator lights are connected to the main control chip, and are used to light up when the toothbrush is awakened and / or give corresponding prompts when in different modes or vibration intensities.

9. The rotationally controlled keyless electric toothbrush according to claim 1, wherein A positioning bump is provided on the edge of the brush head close to the handle.

10. The rotation-controlled keyless electric toothbrush according to claim 1, characterized in that, A charging interface or an inductive charging coil electrically connected to the battery is provided at one end of the handle away from the brush head.

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