An ultrasonic motor for a dental irrigator

Abstract

The present invention discloses an ultrasonic motor for a dental cleaner, specifically relating to the technical field of motors, which includes a housing, a stator, a rotor, and a motor driving range adjusting mechanism; wherein the motor driving range adjusting mechanism includes a transmission shaft, a polarization shaft, a micro electric cylinder, a connecting block, a concave block, two connecting shafts, a socket rod, a pulling shaft, a hinge block, a socket block, a limiting strip, and a limiting inner ring; and further includes a sealing vibration limiting mechanism and a sensing calibration mechanism. The present invention has the advantage that through the motor driving range adjusting mechanism, the driving vibration range of the polarization shaft can be limited and adjusted by two limiting strips, and the vibration offset range of the output end of the ultrasonic motor can be accurately adjusted according to actual needs, thereby solving the problem that it is difficult to accurately adjust the vibration offset range of the output end of the ultrasonic motor according to actual needs.

Description

Technical Field

[0001] The present invention relates to the technical field of motors, and more particularly to an ultrasonic motor for a tooth cleaner. Background Art

[0002] The working principle of ultrasonic motor in tooth cleaner is mainly based on high-frequency vibration and cavitation. Specifically, it is high-frequency vibration: ultrasonic motor can generate high-frequency vibration, which is transmitted to the tooth surface through the working head of the tooth cleaner. Under the action of vibration, deposits such as dental plaque and tartar will be effectively decomposed and peeled off the tooth surface.

[0003] In the existing public literature, patent announcement number CN117200504A discloses an ultrasonic motor for an electric toothbrush, which uses a shock absorber to reduce vibration of the motor caused by axial runout of the output shaft, thereby reducing the vibration and noise felt by the user when using the electric toothbrush and improving the comfort of use. The motor output shaft is sealed at one end by a spring and a sealing ring, and a secondary seal is performed by a sealing plate. The double seal reduces the probability of water damage to the motor and extends the service life of the ultrasonic motor. However, the ultrasonic motor has the following problems.

[0004] When an ultrasonic motor is used in a tooth cleaner, it can provide high-frequency vibrations, and combined with the ultrasonic transmission operation, it will cause the driver to produce vibrations within a certain range. However, the vibration range is limited. For some narrow gaps, the vibration range of the ultrasonic motor output end is wider, which will cause damage to the teeth. This makes it difficult to accurately adjust the vibration offset range of the ultrasonic motor output end according to actual needs. For this reason, an ultrasonic motor for a tooth cleaner is needed. Summary of the invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides the following technical solutions: an ultrasonic motor for a tooth cleaner, comprising a shell, a stator and a rotor, wherein the stator is fixed to the inner wall of the shell, the rotor is rotatably connected to the inner wall of the stator, and a motor drive range adjustment mechanism is fixedly installed on one end of the rotor; the motor drive range adjustment mechanism comprises a transmission shaft fixedly arranged on one end of the rotor, and one end of the transmission shaft is fixedly connected to a polarization axis, a micro-electric cylinder is provided on one side of the polarization axis, an output end of the micro-electric cylinder is fixedly connected to a connecting block, and one side of the connecting block is fixedly connected to a concave block.

[0006] Two connecting shafts are fixedly connected to the inner wall of the concave block. A socket rod is rotatably connected to the outer wall of each connecting shaft. A pull shaft is rotatably connected to the inner wall of the socket rod at a position far from the connecting shaft. An articulated block is fixedly connected to one end of the pull shaft; a socket block is fixedly connected to one side of the articulated block. A limiting strip is fixedly installed at one end of the socket block. A limiting inner ring is fixedly installed at one end of the micro electric cylinder; a sealing vibration limiting mechanism is arranged on the inner wall of the limiting inner ring; a sensing calibration mechanism is installed on one side of the socket block.

[0007] Preferably, the cross-sectional shapes of the concave block and the articulated block are both concave, and the vertical cross-sectional shapes of the pull shaft and the connecting shaft are circular. The vertical cross-sectional shape of the limiting strip is arc-shaped, and the inner walls of the two limiting strips are both smooth surfaces. A guiding column is arranged on the inner wall of the socket block. Both socket blocks are slidably connected to the guiding column; a guiding frame is fixedly installed at the top end of the guiding column. Both socket blocks are slidably connected to the guiding frame, and the guiding frame is fixedly connected to the limiting inner ring.

[0008] Preferably, a rotating ring is fixedly connected to the outer wall of the polarization axis near the transmission shaft;

[0009] An eccentric block is fixedly connected to the bottom end of the outer wall of the rotating ring. An ultrasonic generator is arranged on one side of the transmission shaft, and the ultrasonic generator is fixedly connected to the outer shell.

[0010] When this technical solution is used, the driving vibration range value is set through the circuit board, and then the micro electric cylinder is powered by the circuit board. The connecting block moves the concave block to the right. The two connecting shafts drive one end of the two socket rods to move to the right synchronously. The other end of the socket rod drives the pull shaft to move downward, while the other pull shaft moves upward. The articulated block drives the socket block to move downward. The socket block slides down along the outer wall of the guiding column, and at the same time the socket block slides down along the inner wall of the guiding frame. The socket block makes the limiting strip move downward, and the other limiting strip moves upward.

[0011] Preferably, the sealing vibration limiting mechanism includes a rubber ring fixedly arranged on the inner wall of the limiting inner ring; the rubber ring is rotatably connected to the polarization axis. A limiting outer ring is installed on the outer wall of the limiting inner ring. Both the outer shell and the limiting inner ring are fixedly connected to the limiting outer ring. A limiting support ring is fixedly connected to one side of the limiting inner ring. The polarization axis is rotatably connected to the limiting support ring; a pointed part is fixedly connected to one end of the polarization axis. The vertical cross-sectional shape of the rubber ring is circular, and the rubber ring is made of rubber material.

[0012] When this technical solution is in use, the circuit board starts the stator, causing the rotor to rotate. The rotor drives the transmission shaft to rotate, the polarization shaft drives the rotating ring to rotate, and the eccentric block performs eccentric rotation. At the same time, the ultrasonic generator can perform ultrasonic-assisted vibration on the transmission shaft. The transmission shaft can drive the polarization shaft to vibrate synchronously, causing the rubber ring to deform and link. The polarization shaft contacts the inner walls of the two limiting strips, and the polarization shaft realizes the ultrasonic-driven vibration operation. The outer shell supports the limiting outer ring, and the limiting outer ring supports the limiting inner ring. The limiting inner ring can perform a limiting operation on the outer wall of the rubber ring.

[0013] Preferably, the sensing and calibration mechanism includes a support block fixedly arranged on one side of the socket block;

[0014] One side of the support block is fixedly connected with an inclined strip. At the bottom end of the support block, a sleeve block is fixedly installed. The inner wall of the sleeve block is fixedly connected with a main distance sensor. Below the sleeve block, there is a fixed sleeve block, which is fixedly connected to the limiting inner ring. The support block and the sleeve block are both slidably connected to the limiting inner ring. The inner wall of the fixed sleeve block is fixedly installed with a calibration distance sensor. Below the fixed sleeve block, there is a circuit board fixedly connected to the limiting inner ring. The top surface of the calibration distance sensor is on the same horizontal plane as the upper surface of the fixed sleeve block, and the lower surface of the sleeve block is parallel to the upper surface of the fixed sleeve block.

[0015] When this technical solution is in use, when the socket block moves downward, it drives the support block to move downward. The inclined strip causes the sleeve block to move downward, and the main distance sensor approaches the fixed sleeve block. The sleeve block and the support block move downward and slide on the limiting inner ring. The main distance sensor can sense the distance to the fixed sleeve block. At the same time, the calibration distance sensor can sense the distance to the sleeve block. When the distance values sensed by the calibration distance sensor and the main distance sensor are both the same as the driving vibration range value set by the circuit board.

[0016] The technical effects and advantages of the present invention:

[0017] In the present invention, through the motor drive range adjustment mechanism, the micro-electric cylinder pushes the connecting block to move rightward. The connecting block causes the concave block to move rightward. The two connecting shafts respectively drive the ends of the two socket rods to move rightward synchronously. The other end of the socket rod drives the pull shaft to move downward, while the other pull shaft moves upward. The hinge block drives the socket block to move downward. The two limiting strips can limit and adjust the driving vibration range of the polarization shaft, and can accurately adjust the vibration offset range of the output end of the ultrasonic motor according to actual needs.

[0018] The present invention adopts a sealed vibration limiting mechanism, and the transmission shaft can synchronously drive the polarization axis to vibrate. The polarization axis vibrates at a high frequency ultrasonically inside the rubber ring, and the rubber ring undergoes deformation linkage, so that the polarization axis contacts the inner walls of the two limiting strips, and the limiting outer ring is supported by the outer shell, and the limiting outer ring supports the limiting inner ring. The limiting support ring can perform a limiting rotation operation on the outer wall of the polarization axis, and the polarization axis can vibrate ultrasonically within a specified range.

[0019] The present invention adopts a sensing calibration mechanism, the support block drives the tilting bar to move downward, the main distance sensor approaches the fixed sleeve block, the sleeve block and the support block slide downward on the limit inner ring, and when the distance value sensed by the calibration distance sensor and the distance value sensed by the main distance sensor are the same as the driving vibration range value set by the circuit board, the polarization axis can be driven to vibrate within the limited range between the two limit bars.

[0020] The interaction of the above multiple functions first enables the two limit bars to limit the driving vibration range of the polarization axis, then enables the limit support ring to limit the rotation of the outer wall of the polarization axis, and finally makes the distance value sensed by the calibration distance sensor and the distance value sensed by the main distance sensor the same as the driving vibration range value set by the circuit board. In summary, the vibration offset range of the output end of the ultrasonic motor can be accurately adjusted according to actual needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the front view of the ultrasonic motor used for a tooth cleaner of the present invention.

[0022] Figure 2 It is a schematic diagram of the vertical cross-section structure of the ultrasonic motor used for a tooth cleaner of the present invention.

[0023] Figure 3 It is a schematic diagram of the partial structure of the connection between the limiting outer ring and the limiting inner ring of the present invention.

[0024] Figure 4 For the present invention Figure 3 Enlarged structural diagram at A in the middle.

[0025] Figure 5 It is a schematic diagram of the partial structure of the connection between the housing and the ultrasonic generator of the present invention.

[0026] Figure 6 It is a schematic diagram of the vertical cross-section structure of the ultrasonic motor used for a tooth cleaner of the present invention.

[0027] Figure 7 For the present invention Figure 6 Enlarged structural diagram at B in the middle.

[0028] Figure 8 It is a schematic diagram of the local structure of the sensor proofreading mechanism of the present invention.

[0029] The reference numerals are: 1, housing; 2, stator; 3, rotor; 4, drive shaft; 5, polarization axis; 6, micro electric cylinder; 7, connecting block; 8, concave block; 9, connecting shaft; 10, socket rod; 11, pull shaft; 12, hinge block; 13, socket block; 14, limit strip; 15, inner limit ring; 16, guide post; 17, guide frame; 18, swivel ring; 19, eccentric block; 20, ultrasonic generator; 21, rubber ring; 22, outer limit ring; 23, support limit ring; 24, tip; 25, support block; 26, inclined strip; 27, sleeve block; 28, main distance sensor; 29, fixed sleeve block; 30, calibration distance sensor; 31, circuit board. Detailed implementation manners

[0030] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0031] As shown in the attached Figure 1 -attached Figure 8 An ultrasonic motor for a tooth cleaner as shown. The ultrasonic motor for the tooth cleaner is provided with a motor drive range adjustment mechanism, a sealing vibration limit mechanism, and a sensing calibration mechanism. The settings of each mechanism can accurately adjust the vibration offset range of the output end of the ultrasonic motor according to actual needs. The specific structural settings of each mechanism are as follows.

[0032] In this technical solution, as shown in the attached Figure 1 -attached Figure 4 As shown, the stator 2 is fixed on the inner wall of the housing 1, the rotor 3 is rotatably connected to the inner wall of the stator 2, and a motor drive range adjustment mechanism is fixedly installed at one end of the rotor 3; the motor drive range adjustment mechanism includes a drive shaft 4 fixedly arranged at one end of the rotor 3, and one end of the drive shaft 4 is fixedly connected to a polarization axis 5. A micro electric cylinder 6 is arranged on one side of the polarization axis 5, the output end of the micro electric cylinder 6 is fixedly connected to a connecting block 7, and one side of the connecting block 7 is fixedly connected to a concave block 8.

[0033] Two connecting shafts 9 are fixedly connected to the inner wall of the concave block 8. The outer wall of each connecting shaft 9 is rotatably connected to a socket rod 10. The inner wall of the socket rod 10 is rotatably connected to a pull shaft 11 at a position far from the connecting shaft 9. An articulated block 12 is fixedly connected to one end of the pull shaft 11; a socket block 13 is fixedly connected to one side of the articulated block 12. A limiting strip 14 is fixedly installed at one end of the socket block 13. A limiting inner ring 15 is fixedly installed at one end of the micro-electric cylinder 6; a sealing vibration limiting mechanism is provided on the inner wall of the limiting inner ring 15; a sensing calibration mechanism is installed on one side of the socket block 13.

[0034] In this technical solution, as shown in the attached Figure 4 - attached Figure 5 As shown, a guide post 16 is provided on the inner wall of the socket block 13. Both socket blocks 13 are slidably connected to the guide post 16; a guide frame 17 is fixedly installed at the top of the guide post 16. Both socket blocks 13 are slidably connected to the guide frame 17. The guide frame 17 is fixedly connected to the limiting inner ring 15, so as to facilitate the socket block 13 to slide down along the outer wall of the guide post 16, and at the same time the socket block 13 slides down along the inner wall of the guide frame 17 to achieve the guiding sliding operation. A rotating ring 18 is fixedly connected to the outer wall of the polarization axis 5 near the transmission shaft 4; an eccentric block 19 is fixedly connected to the bottom end of the outer wall of the rotating ring 18, so as to facilitate the polarization axis 5 to drive the rotating ring 18 to rotate, the rotating ring 18 drives the eccentric block 19 to rotate, and the eccentric block 19 performs eccentric rotation, which can generate an eccentric vibration force.

[0035] A ultrasonic generator 20 is provided on one side of the transmission shaft 4, and the ultrasonic generator 20 is fixedly connected to the housing 1, so as to facilitate the ultrasonic generator 20 to perform ultrasonic assisted vibration on the transmission shaft 4 at the same time, so that the transmission shaft 4 can drive the polarization axis 5 to vibrate synchronously to achieve the vibration operation of the polarization axis 5.

[0036] In this technical solution, as shown in the attached Figure 1 - attached Figure 5 As shown, the sealing vibration limiting mechanism includes a rubber ring 21 fixedly arranged on the inner wall of the limiting inner ring 15; the rubber ring 21 is rotatably connected to the polarization axis 5. A limiting outer ring 22 is installed on the outer wall of the limiting inner ring 15. Both the housing 1 and the limiting inner ring 15 are fixedly connected to the limiting outer ring 22. A limiting support ring 23 is fixedly connected to one side of the limiting inner ring 15. The polarization axis 5 is rotatably connected to the limiting support ring 23; a tip 24 is fixedly connected to one end of the polarization axis 5. The cross-sectional shape of the rubber ring 21 is circular, and the rubber ring 21 is made of rubber material.

[0037] In this technical solution, as shown in the attached Figure 6 - attached Figure 8As shown in the figure, the sensing and calibration mechanism includes a support block 25 fixedly arranged on one side of the socket block 13; one side of the support block 25 is fixedly connected with an inclined bar 26, and a sleeve block 27 is fixedly installed at the bottom end of the support block 25. The inner wall of the sleeve block 27 is fixedly connected with a main distance sensor 28. A fixed sleeve block 29 is arranged below the sleeve block 27, and the fixed sleeve block 29 is fixedly connected with the inner limit ring 15. Both the support block 25 and the sleeve block 27 are slidably connected with the inner limit ring 15; a calibration distance sensor 30 is fixedly installed on the inner wall of the fixed sleeve block 29, and a circuit board 31 fixedly connected with the inner limit ring 15 is arranged below the fixed sleeve block 29. The top surface of the calibration distance sensor 30 is on the same horizontal plane as the upper surface of the fixed sleeve block 29, and the lower surface of the sleeve block 27 is parallel to the upper surface of the fixed sleeve block 29.

[0038] The working principle of the ultrasonic motor for the tooth cleaner of the present invention is as follows:

[0039] Step 1: When installing the motor, install the outer shell 1 in the installation groove of the tooth cleaner, and inject sealing and fixing glue into the edge gap to complete the installation operation of the outer shell 1.

[0040] Step 2: When adjusting the driving range of the motor, set the driving vibration range value through the circuit board 31, then supply power to the micro electric cylinder 6 through the circuit board 31. The micro electric cylinder 6 pushes the connecting block 7 to move rightward. The connecting block 7 makes the concave block 8 move rightward. The concave block 8 drives the two connecting shafts 9 to move rightward synchronously. The two connecting shafts 9 respectively drive one end of the two socket rods 10 to move rightward synchronously. The other end of the socket rod 10 drives the pull shaft 11 to move downward, while the other pull shaft 11 moves upward. The pull shaft 11 drives the hinge block 12 to move downward. The hinge block 12 drives the socket block 13 to move downward. The socket block 13 slides down along the outer wall of the guide post 16 and at the same time slides down along the inner wall of the guide frame 17. The socket block 13 makes the limit strip 14 move downward. The limit strip 14 moves downward, and the other limit strip 14 moves upward. The two limit strips 14 can limit and adjust the driving vibration range of the polarization axis 5.

[0041] Step 3: During sensor calibration, when the sleeve block 13 moves downward, the support block 25 moves downward, the support block 25 drives the tilt bar 26 to move downward, the tilt bar 26 makes the sleeve block 27 move downward, the sleeve block 27 drives the main distance sensor 28 to move downward, and the main distance sensor 28 approaches the fixed sleeve block 29, and supports the fixed sleeve block 29 through the limit inner ring 15. At the same time, the sleeve block 27 and the support block 25 slide downward on the limit inner ring 15. In this way, the main distance sensor 28 can perform distance sensing on the fixed sleeve block 29, and the calibration distance sensor 30 can perform distance sensing on the sleeve block 27. When the distance value sensed by the calibration distance sensor 30 and the distance value sensed by the main distance sensor 28 are the same as the driving vibration range value set by the circuit board 31, the micro-electric cylinder 6 is closed through the circuit board 31, so that the polarization axis 5 can be driven to vibrate within the limited range between the two limit bars 14.

[0042] Step 4: When the sealed ultrasonic vibration is limited, the stator 2 is supported by the housing 1, and the circuit board 31 starts the stator 2, so that the rotor 3 rotates, and the rotor 3 drives the transmission shaft 4 to rotate, and the transmission shaft 4 rotates the polarization axis 5. At the same time, the polarization axis 5 drives the rotating ring 18 to rotate, and the rotating ring 18 drives the eccentric block 19 to rotate. The eccentric block 19 rotates eccentrically, so that the polarization axis 5 vibrates, and the ultrasonic generator 20 can perform ultrasonic auxiliary vibration on the transmission shaft 4, so that the transmission shaft 4 can synchronously drive the polarization axis 5 to vibrate, and the polarization axis 5 vibrates at a high frequency ultrasonically inside the rubber ring 21, and the rubber ring 21 has a deformation linkage, so that the polarization axis 5 contacts the inner walls of the two limit strips 14, so that the polarization axis 5 realizes ultrasonic driven vibration operation, and at the same time, the polarization axis 5 drives the tip 24 to vibrate. The limit outer ring 22 is supported by the housing 1, and the limit outer ring 22 supports the limit inner ring 15. The limit inner ring 15 can perform a limit operation on the outer wall of the rubber ring 21, and the limit support ring 23 can perform a limit rotation operation on the outer wall of the polarization axis 5.

[0043] The contents not described in detail in the specification belong to the prior art known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited, and conventional equipment can be used. In this technical solution, the electrical control components not mentioned are not shown in the figure because they belong to the prior art and will not be described here.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An ultrasonic motor for a dental cleaner, comprising a housing, a stator and a rotor, the stator being fixed to the inner wall of the housing, the rotor being rotatably connected to the inner wall of the stator, characterized in that: One end of the rotor is fixedly installed with a motor drive range adjustment mechanism; the motor drive range adjustment mechanism includes a transmission shaft fixedly arranged at one end of the rotor, and one end of the transmission shaft is fixedly connected with a polarization shaft. There is a micro electric cylinder on one side of the polarization shaft, the output end of the micro electric cylinder is fixedly connected with a connecting block, and one side of the connecting block is fixedly connected with a concave block; two connecting shafts are fixedly connected to the inner wall of the concave block, and a socket rod is rotatably connected to the outer wall of each connecting shaft. A pull shaft is rotatably connected to the inner wall of the socket rod at a position far from the connecting shaft, and a hinge block is fixedly connected to one end of the pull shaft; a socket block is fixedly connected to one side of the hinge block, and a limiting strip is fixedly installed at one end of the socket block. A limiting inner ring is fixedly installed at one end of the micro electric cylinder; a sealing vibration limiting mechanism is arranged on the inner wall of the limiting inner ring, and the sealing vibration limiting mechanism includes a rubber ring fixedly arranged on the inner wall of the limiting inner ring; the rubber ring is rotatably connected with the polarization shaft. A limiting outer ring is installed on the outer wall of the limiting inner ring, and both the housing and the limiting inner ring are fixedly connected with the limiting outer ring. A limiting support ring is fixedly connected to one side of the limiting inner ring, and the polarization shaft is rotatably connected with the limiting support ring; a tip is fixedly connected to one end of the polarization shaft; a sensing calibration mechanism is installed on one side of the socket block, and the sensing calibration mechanism includes a support block fixedly arranged on one side of the socket block; an inclined strip is fixedly connected to one side of the support block. A sleeve block is fixedly installed at the bottom end of the support block, and a main distance sensor is fixedly connected to the inner wall of the sleeve block. There is a fixed sleeve block below the sleeve block, and the fixed sleeve block is fixedly connected with the limiting inner ring. Both the support block and the sleeve block are slidably connected with the limiting inner ring; a calibration distance sensor is fixedly installed on the inner wall of the fixed sleeve block. There is a circuit board fixedly connected with the limiting inner ring below the fixed sleeve block. The top surface of the calibration distance sensor is on the same horizontal plane as the upper surface of the fixed sleeve block, and the lower surface of the sleeve block is parallel to the upper surface of the fixed sleeve block.

2. The ultrasonic motor for a dental cleaner according to claim 1, characterized in that: The cross-sectional shapes of the concave block and the hinge block are both concave, and the vertical cross-sectional shapes of the pull shaft and the connecting shaft are circular.

3. The ultrasonic motor for a dental cleaner according to claim 1, characterized in that: The vertical cross-sectional shape of the limiting strip is arc-shaped, and the inner walls of both limiting strips are smooth surfaces.

4. The ultrasonic motor for a dental cleaner according to claim 1, wherein: Guide columns are arranged on the inner wall of the socket block, and both socket blocks are slidably connected with the guide columns; The top end of the guide column is fixedly installed with a guide frame, and both socket blocks are slidably connected with the guide frame, and the guide frame is fixedly connected with the limiting inner ring.

5. The ultrasonic motor for a dental cleaner according to claim 1, characterized in that: A rotating ring is fixedly connected to the outer wall of the polarization shaft near the transmission shaft; An eccentric block is fixedly connected to the bottom end of the outer wall of the rotating ring.

6. The ultrasonic motor for a dental cleaner according to claim 1, wherein: A ultrasonic generator is arranged on one side of the transmission shaft, and the ultrasonic generator is fixedly connected with the housing.

7. The ultrasonic motor for a dental cleaner according to claim 1, characterized in that: The vertical cross-sectional shape of the rubber ring is circular, and the rubber ring is made of rubber material.

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