Tooth cleaning device

Abstract

The invention discloses a tooth cleaning device in the technical field of tooth cleaning, the tooth cleaning device comprises a brush handle and a brush head, the brush handle is fixedly connected with a connecting rod, one end, far away from the brush handle, of the connecting rod is rotatably connected with a rotating shaft perpendicular to the connecting rod, the brush head is fixedly connected to one end, far away from the connecting rod, of the rotating shaft, and the brush head is perpendicular to the rotating shaft. According to the tooth cleaning device, the convenience of cleaning the inner sides of the teeth can be remarkably improved.

Description

Technical Field

[0001] The invention belongs to the technical field of teeth cleaning, and in particular relates to a teeth cleaning device. Background Art

[0002] Cleaning teeth is essential for maintaining oral health. At present, people mainly use toothbrushes to clean their teeth. The friction between the bristles of the toothbrush and the surface of the teeth can remove food residues and some dirt on the surface of the teeth.

[0003] However, there are some problems in the process of teeth cleaning. On the one hand, current toothbrushes have difficulty in cleaning the inside of teeth. Since the inside of the teeth is relatively hidden, the bristles of ordinary toothbrushes cannot fully contact the inside surface of the teeth, making it difficult to effectively remove the dirt and plaque on the inside of the teeth. Summary of the invention

[0004] The present invention aims to provide a tooth cleaning device to improve the convenience of cleaning the inner side of teeth.

[0005] A teeth cleaning device in this scheme includes a brush handle and a brush head. A connecting rod is fixedly connected to the brush handle. The end of the connecting rod away from the brush handle is rotatably connected to a rotating shaft perpendicular to the brush handle. The brush head is fixedly connected to the end of the rotating shaft away from the connecting rod, and the brush head is perpendicular to the rotating shaft.

[0006] The working principle and beneficial effects of this solution: In the initial state, the brush head is parallel to the connecting rod and extends to the side away from the brush handle. At this time, the tooth cleaning device as a whole can be regarded as a regular toothbrush to clean the outside of the teeth. When the inside of the teeth needs to be cleaned, the rotating shaft is rotated to rotate the brush head fixed at one end of the rotating shaft; according to the cleaning needs, the angle of the brush head can be adjusted. When the brush head is rotated to a suitable angle, the brush head can be inserted into the mouth to clean the inside of the teeth. Generally, when the brush head is rotated 90°, the inside of the teeth can be better cleaned. Since the brush head can be rotated at multiple angles through the rotating shaft, it can better contact the inner surface of the teeth, thereby improving the convenience of cleaning the inside of the teeth.

[0007] Furthermore, a threaded hole is provided on the side of the brush head, and the brush head is threadedly connected to the end of the rotating shaft away from the connecting rod through the threaded hole. It is convenient to install and disassemble the brush head, and it is convenient to replace and maintain the brush head. Users can choose different types of brush heads according to personal preferences or cleaning needs to improve cleaning effects and convenience of use. At the same time, the threaded connection is relatively firm, which can ensure that the brush head will not loosen or fall off during use; and its rotation can be achieved by directly rotating the brush head.

[0008] Furthermore, a power assembly for driving the rotating shaft to rotate is arranged in the brush handle, and the power assembly provides rotational power for the brush head, and the brush head does not need to be rotated manually, which is more convenient and labor-saving to use.

[0009] Furthermore, the power assembly includes a transmission assembly, a micro motor and a battery for powering the micro motor. The length direction of the micro motor is consistent with the length direction of the brush handle. The transmission assembly includes an active bevel gear, a driven bevel gear, a transmission shaft and a transmission belt. The active bevel gear is fixedly connected to the output shaft of the micro motor. The transmission shaft is rotatably connected in the brush handle and parallel to the rotating shaft. The driven bevel gear is installed on the transmission shaft. The active bevel gear and the driven bevel gear are meshed. The transmission shaft and the rotating shaft are connected through the transmission belt. The bevel gear transmission has the advantages of smooth transmission and low noise; while the transmission belt transmission can realize long-distance transmission, and the transmission ratio can be adjusted according to needs to improve the transmission efficiency.

[0010] Furthermore, a control button for controlling the micro motor is provided on the brush handle. The control button is convenient for the user to operate, and the micro motor can be turned on or off at any time to save power. At the same time, the control button can adjust the angle of the brush head to meet different cleaning needs.

[0011] Furthermore, a transmission gear is installed on the transmission shaft, and a through hole is provided in the length direction of the connecting rod to penetrate the connecting rod, and a rack is slidably connected in the through hole, one end of the rack extends into the brush handle and meshes with the transmission gear, and the end of the rack away from the brush handle is detachably connected to an interdental brush, and when the brush head rotates 90°, the interdental brush is located in the through hole, and when the brush head rotates 180°, the interdental brush extends out of the through hole. Dirt and dental plaque in the gaps between teeth are also difficult to clean. The gaps between teeth are usually narrow, and it is difficult for the bristles of the toothbrush to penetrate into them for cleaning, so that the dirt and dental plaque in the gaps between teeth are easy to accumulate, which may cause dental caries, periodontitis and other oral diseases in the long run. The setting of the transmission gear, the rack and the interdental brush can solve this problem well. In specific operation: through the cooperation of the transmission gear, the rack and the interdental brush, the interdental brush can be extended out of the through hole when needed to effectively clean the gaps between teeth. This design cleverly utilizes the space of the device and improves the functionality of the device; in addition, when the brush head rotates 90°, the interdental brush is located in the through hole, and when the brush head rotates 180°, the interdental brush extends out of the through hole, so that the use of the brush head and the interdental brush does not affect each other.

[0012] Furthermore, the through hole is provided with a limit groove on both sides, the limit groove is located at one end of the connecting rod close to the brush handle, and the rack is provided with a limit block on both sides for use with the limit groove. The limit groove and the limit block are used in combination to prevent the rack from falling out and improve the reliability of the device. At the same time, the limit block slides in the limit groove to ensure the smooth movement of the rack and improve the use effect of the interdental brush.

[0013] Furthermore, a main control circuit board is provided in the brush handle, and the main control circuit board integrates a microcontroller, a power management module and a motor drive module. The power management module includes a charging circuit and a battery protection circuit. The charging circuit is used to control the current and voltage during the battery charging process and feed back the data to the microprocessor. The battery protection circuit is used to monitor the voltage, current and temperature of the battery and feed back to the microprocessor; the motor drive module is used to convert the control signal output by the microcontroller into a current and voltage suitable for the operation of the motor; the charging circuit and the battery protection circuit are both electrically connected to the battery; the button is a touch sensor; the touch sensor, the motor drive module, the charging circuit and the battery protection circuit are all connected to the microcontroller electrical signal, and the motor is electrically connected to the motor drive module; in the initial state, the brush head is parallel to the connecting rod and the brush head extends to the side away from the brush handle; by clicking the touch sensor, the microprocessor controls the motor to drive the brush head to rotate clockwise to 90° from the initial position; by double-clicking the touch sensor, the microprocessor controls the motor to drive the brush head to rotate clockwise to 180° from the initial position; by pressing the touch sensor for more than 1.5s, the microprocessor controls the motor to drive the brush head to rotate counterclockwise to the initial position. The main control circuit board can realize precise control of the motor and improve the intelligence of the device. The power management module can effectively monitor the voltage, current and temperature of the battery to ensure safe use. The motor drive module can convert the control signal output by the microcontroller into the current and voltage suitable for the motor to improve the working efficiency of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic structural diagram of a teeth cleaning device according to Embodiment 1 of the present invention;

[0015] Figure 2 for Figure 1 Schematic diagram of the structure after removing the brush head;

[0016] Figure 3 This is a schematic structural diagram of a teeth cleaning device according to Embodiment 2 of the present invention;

[0017] Figure 4 is a partial cross-sectional view of 3;

[0018] Figure 5 This is a schematic structural diagram of a teeth cleaning device according to Embodiment 3 of the present invention;

[0019] Figure 6 for Figure 5 Enlarged view of point A. DETAILED DESCRIPTION

[0020] The following is further described in detail through specific implementation methods:

[0021] The figure marks in the drawings of the specification include: brush head 1, rotating shaft 2, threaded section 21, connecting rod 3, brush handle 4, button 5, blind hole 6, transmission belt 7, rack 8, transmission shaft 9, transmission gear 10, motor 11, driving bevel gear 12, driven bevel gear 13, limit block 14, through hole 15, interdental brush 16, limit groove 17.

[0022] Embodiment 1 is basically as attached Figures 1-2 As shown: a tooth cleaning device, including a brush handle 4 and a brush head 1, a connecting rod 3 is fixedly connected to the brush handle 4, the connecting rod 3 is coaxial with the brush handle 4, the connecting rod 3 is threadedly connected to the brush handle 4, the end of the connecting rod 3 away from the brush handle 4 is rotatably connected to a rotating shaft 2 perpendicular to it, the rotating shaft 2 extends outside the connecting rod 3, and the end of the rotating shaft 2 away from the connecting rod 3 is provided with a threaded section 21; a threaded hole is provided on the side of the rod of the brush head 1, and the brush head 1 is threadedly connected to the threaded section 21 of the rotating shaft 2 through the threaded hole.

[0023] By rotating the brush head 1, the angle between the brush head 1 and the brush handle 4 is changed. When the brush head 1 is rotated to be perpendicular to the brush handle 4, the inside of the teeth can be cleaned conveniently. Specifically: In the initial state, the brush head 1 and the brush handle 4 are parallel, similar to a conventional toothbrush, and the outside of the teeth can be cleaned. Hold the brush handle 4, align the brush head 1 with the outer surface of the teeth, and brush the teeth to remove food residues and some dirt through the friction between the bristles and the tooth surface. When it is necessary to clean the inside of the teeth, manually rotate the brush head 1 to gradually increase the angle between the brush head 1 and the brush handle 4 until the brush head 1 is rotated to a position perpendicular to the brush handle 4. At this time, the brush head 1 can be inserted into the oral cavity to better contact the inner surface of the teeth for cleaning operations.

[0024] Embodiment 2 is basically as attached Figures 3-4 As shown, the difference between it and embodiment 1 is that: a cavity is provided in the brush handle 4, a threaded hole connected to the cavity is provided on the top of the brush handle 4, the end of the connecting rod 3 away from the brush head 1 is threadedly connected in the threaded hole, and the end of the connecting rod 3 connected to the brush handle 4 is provided with a blind hole 6, a power assembly is installed in the cavity, the power assembly includes a transmission assembly, a micro motor 11 and a battery for powering the micro motor 11, the length direction of the micro motor 11 is consistent with the length direction of the brush handle 4, the transmission assembly includes a driving bevel gear 12, a driven bevel gear 13, a transmission shaft 9 and a transmission belt 7, The driving bevel gear 12 is fixedly connected to the output shaft of the micro motor 11 through a coupling, and the transmission shaft 9 is rotatably connected in the brush handle 4 and is parallel to the rotating shaft 2. Specifically, the two ends of the transmission shaft 9 are rotatably connected in the walls on opposite sides of the cavity; the driven bevel gear 13 is installed on the transmission shaft 9, the driving bevel gear 12 and the driven bevel gear 13 are meshed, the transmission shaft 9 and the rotating shaft 2 are connected through the transmission belt 7, and the transmission belt 7 is located in the blind hole 6; a control button 5 for controlling the on and off of the micro motor 11 is provided on the brush handle 4, and the control button 5 is a mechanical button 5.

[0025] When in use, the difference from Example 1 is that when it is necessary to clean the inner side of the teeth, the angle of the brush head 1 is adjusted by the control button 5. The control button 5 can control the rotation direction and speed of the micro motor 11, so that the rotating shaft 2 drives the brush head 1 to rotate to a suitable angle. When the brush head 1 rotates to an angle that better contacts the inner surface of the teeth, the cleaning operation is performed. The angle of the brush head 1 can be adjusted according to different cleaning needs to improve the cleaning effect.

[0026] Embodiment 3 is basically as attached Figures 5-6 As shown, the difference between it and embodiment 2 is that: a transmission gear 10 is installed on the transmission shaft 9, a through hole 15 is provided in the length direction of the connecting rod 3 to penetrate it, a rack 8 is slidably connected in the through hole 15, one end of the rack 8 extends into the brush handle 4 and meshes with the transmission gear 10, and limiting grooves 17 are provided on both sides of the through hole 15. The limiting groove 17 is located at the end of the connecting rod 3 close to the brush handle 4, and limiting blocks 14 used in conjunction with the limiting groove 17 are provided on both sides of the rack 8; the end of the rack 8 away from the brush handle 4 is detachably connected to the rack 8. When the brush head 1 rotates 90°, the interdental brush 16 is located in the through hole 15; when the brush head 1 rotates 180°, the interdental brush 16 extends out of the through hole 15; in addition, a main control circuit board is also provided in the cavity, and the main control circuit board integrates a microcontroller, a power management module and a motor 11 drive module. The power management module includes a charging circuit and a battery protection circuit. The charging circuit is used to control the current and voltage of the battery during charging and feed back the data to the microprocessor. The battery protection circuit is used to monitor the voltage, current and temperature of the battery and Feedback to the microprocessor; the motor 11 drive module is used to convert the control signal output by the microcontroller into a current and voltage suitable for the operation of the motor 11; the charging circuit and the battery protection circuit are both electrically connected to the battery; the button 5 is a touch sensor; the touch sensor, the motor 11 drive module, the charging circuit and the battery protection circuit are all electrically connected to the microcontroller, and the motor 11 is electrically connected to the motor 11 drive module; in the initial state, the brush head 1 is parallel to the connecting rod 3 and the brush head 1 extends to the side away from the brush handle 4; click the touch sensor, the microprocessor controls the motor 11 to drive the brush head 1 clockwise to 90° from the initial position; double-click the touch sensor, the microprocessor controls the motor 11 to drive the brush head 1 clockwise to 180° from the initial position; long press the touch sensor for more than 1.5s, the microprocessor controls the motor 11 to drive the brush head 1 counterclockwise to the initial position; the microcontroller, the power management module, the motor 11 drive module and the touch sensor all adopt the existing electric toothbrush related designs, the difference is that the preset programs are different, which will not be repeated here.

[0027] The difference between the implementation process and Example 2 is that when cleaning the inner side of the teeth: click the touch sensor, the microprocessor controls the motor 11 to drive the brush head 1 to rotate clockwise to 90° from the initial position. At this time, the brush head 1 can be inserted into the oral cavity to clean the inner side of the teeth. Since the brush head 1 can be accurately adjusted in angle by the motor 11 and the transmission assembly, it can better contact the inner surface of the teeth and improve the cleaning effect.

[0028] When cleaning the gaps between teeth: double-click the touch sensor, and the microprocessor controls the motor 11 to drive the brush head 1 to rotate clockwise to 180° from the initial position. At this time, the interdental brush 16 extends out of the through hole 15, and the brush head 1 rotates to the side close to the brush handle 4 and is parallel to it, so that it does not hinder the use of the interdental brush 16. The interdental brush 16 can be used to clean the gaps between teeth, effectively removing dirt and dental plaque in the gaps between teeth. The detachable design of the interdental brush 16 is convenient for replacement and cleaning, and improves the convenience of use.

[0029] When restoring the initial state: long press the touch sensor for more than 1.5 seconds, the microprocessor controls the motor 11 to drive the brush head 1 to rotate counterclockwise to the initial position. This makes it easy to switch between different cleaning needs, improving the practicality of the device.

[0030] The above is only an embodiment of the present invention, and the common knowledge such as the known specific structure and characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the structure of the present invention, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A tooth cleaning device, comprising a brush handle and a brush head, characterized in that: The brush handle is fixedly connected with a connecting rod, and one end of the connecting rod away from the brush handle is rotatably connected with a rotating shaft perpendicular to it. The brush head is fixedly connected to one end of the rotating shaft away from the connecting rod, and the brush head is perpendicular to the rotating shaft.

2. A teeth cleaning device according to claim 1, characterized in that: A threaded hole is provided on the side of the brush head, and the brush head is threadedly connected to an end of the rotating shaft away from the connecting rod through the threaded hole.

3. A teeth cleaning device according to claim 1 or 2, characterized in that: A power component for driving the rotating shaft to rotate is arranged in the brush handle.

4. A teeth cleaning device according to claim 3, characterized in that: The power assembly includes a transmission assembly, a micro motor and a battery for powering the micro motor. The length direction of the micro motor is consistent with the length direction of the brush handle. The transmission assembly includes a driving bevel gear, a driven bevel gear, a transmission shaft and a transmission belt. The driving bevel gear is fixedly connected to the output shaft of the micro motor, the transmission shaft is rotatably connected in the brush handle and is parallel to the rotating shaft, the driven bevel gear is installed on the transmission shaft, the driving bevel gear and the driven bevel gear are meshed, and the transmission shaft and the rotating shaft are connected through the transmission belt.

5. A teeth cleaning device according to claim 4, characterized in that: The brush handle is provided with a control button for controlling the on and off of the micro motor.

6. A teeth cleaning device according to claim 5, characterized in that: A transmission gear is installed on the transmission shaft, and a through hole is provided in the length direction of the connecting rod to penetrate the connecting rod. A rack is slidably connected in the through hole, one end of the rack extends into the brush handle and meshes with the transmission gear, and an interdental brush is detachably connected to the end of the rack away from the brush handle. When the brush head rotates 90°, the interdental brush is located in the through hole, and when the brush head rotates 180°, the interdental brush extends out of the through hole.

7. A teeth cleaning device according to claim 6, characterized in that: Limiting grooves are arranged on both sides of the through hole, and the limiting grooves are located at one end of the connecting rod close to the brush handle. Limiting blocks used in conjunction with the limiting grooves are arranged on both sides of the rack.

8. A teeth cleaning device according to claim 7, characterized in that: A main control circuit board is arranged in the brush handle, and the main control circuit board integrates a microcontroller, a power management module and a motor drive module. The power management module includes a charging circuit and a battery protection circuit. The charging circuit is used to control the current and voltage of the battery during charging and feed back the data to the microprocessor. The battery protection circuit is used to monitor the voltage, current and temperature of the battery and feed back the data to the microprocessor. The motor drive module is used to convert the control signal output by the microcontroller into a current and voltage suitable for the operation of the motor. The charging circuit and the battery protection circuit are both electrically connected to the battery. The button is a touch sensor. The touch sensor, the motor drive module, the charging circuit and the battery protection circuit are all connected to the microcontroller electrical signal, and the motor is electrically connected to the motor drive module. In the initial state, the brush head is parallel to the connecting rod and the brush head extends to the side away from the brush handle. When the touch sensor is clicked, the microprocessor controls the motor to drive the brush head to rotate clockwise to 90° from the initial position. When the touch sensor is double-clicked, the microprocessor controls the motor to drive the brush head to rotate clockwise to 180° from the initial position. When the touch sensor is pressed for more than 1.5s, the microprocessor controls the motor to drive the brush head to rotate counterclockwise to the initial position.

Images