Sweep vibration method of sound wave motor and sweep vibration toothbrush

Abstract

The invention discloses a sound wave motor sweep vibration method and a sweep vibration toothbrush, and the method comprises the steps: carrying out the first adjustment of the pulse width of a sub-pulse of a first direction current pulse block according to a first block frequency and a first pulse width step length, and obtaining a first direction pulse block, performing second adjustment on the pulse width of the sub-pulse of each pulse block in the second direction at a second pulse width step length according to the second block frequency to obtain a second direction pulse block which is spaced from the first direction pulse block in time sequence; performing third adjustment on each first block pulse width in the first direction by a third pulse width step length, and performing fourth adjustment opposite to the trend of the first adjustment on each second block pulse width in the second direction by a fourth pulse width step length; and the first-direction composite pulse and the second-direction composite pulse are input to the acoustic wave motor through the first channel and the second channel respectively. According to the front-sweeping-vibration toothbrush, the sweeping-vibration effect of the sound wave motor is achieved, driving control over the sweeping-vibration motor is finer and softer, user experience can be improved, and the sweeping-vibration effect of the front-sweeping-vibration toothbrush is enhanced.

Description

Technical Field

[0001] The present invention relates to the technical field of the sweeping and vibrating drive of a sonic motor, and particularly relates to a method for sweeping and vibrating a sonic motor and a sweeping and vibrating toothbrush. Background Art

[0002] The sweeping and vibrating principle of an electric toothbrush is a composite motion technology that combines high-frequency vibration and the swinging of the toothbrush head, aiming to improve the cleaning efficiency, especially in areas such as tooth gaps and gum lines that are difficult to reach. It is commonly found in sonic electric toothbrushes, where high-frequency vibration (usually up to 31,000 times per minute) is generated by electromagnetic drive, driving the bristles to swing at high speed. The rotation of the motor is converted into the swinging or rotational motion of the toothbrush head through an eccentric wheel or a gear set. By combining the high-frequency vibration of a linear motor with additional mechanical structures (such as connecting rods, eccentric shafts), synchronous output of vibration and swinging is achieved.

[0003] The composite motion of the sonic sweeping and vibrating toothbrush covers more tooth surfaces, and the efficiency of removing dental plaque is about 75% higher than that of a manual toothbrush (data source: multiple clinical studies). The swinging amplitude is optimized (usually <5 mm), reducing the risk of gum damage caused by excessive friction. The multi-dimensional motion reduces the hand tremor feeling and is closer to the manual brushing habit, making it easier to adapt.

[0004] In order to reduce costs, some sweeping and vibrating toothbrushes use a sonic motor to achieve sweeping and vibration. Utilizing the inverse piezoelectric effect of the piezoelectric material in the sonic motor, the toothbrush is driven to vibrate through high-frequency mechanical vibration. A composite pulse is input to the sonic motor to achieve the complex sweeping and vibrating effect of the existing servo motor.

[0005] However, for the existing sweeping and vibrating toothbrushes using a sonic motor, their sweeping and vibrating motions are too rigid, thus affecting the user experience and the brushing effect. Summary of the Invention

[0006] For the existing sweeping and vibrating toothbrushes using a sonic motor, their sweeping and vibrating motions are too rigid, reducing the user experience and the brushing effect.

[0007] Aiming at the above problems, a method for sweeping and vibrating a sonic motor and a sweeping and vibrating toothbrush are proposed. By adjusting the pulse width of the sub-pulses of the pulse block in each direction and adjusting the pulses of the block pulses in each direction, not only the sweeping and vibrating effect of the sonic motor is achieved, but also the drive control of the sweeping and vibrating motor is more delicate and gentle, which helps to improve the user experience and enhance the sweeping and vibrating effect of the front sweeping and vibrating toothbrush.

[0008] In the first aspect, a method for sweeping and vibrating a sonic motor includes: Step 100: Obtain the first block of frequencies in the first direction. According to the first block of frequencies and with a first pulse-width step size, perform a first adjustment on the pulse widths of the sub-pulses of the current pulse block in the first direction to obtain a first-direction pulse block. Obtain the second block of frequencies in the second direction. According to the second block of frequencies and with a second pulse-width step size, perform a second adjustment on the pulse widths of the sub-pulses of each pulse block in the second direction to obtain a second-direction pulse block with a timing interval from the first-direction pulse block. Step 200: According to the first-direction pulse frequency, with a third pulse-width step size, perform a third adjustment on each first-block pulse width in the first direction to obtain a first-direction composite pulse. According to the second-direction pulse frequency, with a fourth pulse-width step size, perform a fourth adjustment on each second-block pulse width in the second direction with a trend opposite to that of the third adjustment to obtain a second-direction composite pulse. Step 300: Input the first-direction composite pulse and the second-direction composite pulse into the acoustic wave motor through the first channel and the second channel respectively to drive the acoustic wave motor to vibrate and swing.

[0009] Combined with the acoustic wave motor sweeping and vibrating method of the present invention, in the first possible implementation manner, the step 100 includes: Step 110: According to the first block of frequencies, with the first pulse-width step size, gradually increase the pulse widths of the sub-pulses of the current pulse block in the first direction. Step 120: According to the first block of frequencies, after the pulse widths of the sub-pulses of the current pulse block in the first direction increase to a specified threshold value, with the first pulse-width step size, gradually reduce the pulse widths of the sub-pulses of the current pulse block in the first direction to the specified threshold value to obtain the first-direction pulse block.

[0010] Combined with the first possible implementation manner of the present invention, in the second possible implementation manner, the step 100 further includes: Step 130: According to the second block of frequencies, with the second pulse-width step size, gradually increase the pulse widths of the sub-pulses of the current pulse block in the second direction. Step 140: According to the second block of frequencies, after the pulse widths of the sub-pulses of the current pulse block in the second direction increase to a specified threshold value, with the second pulse-width step size, gradually reduce the pulse widths of the sub-pulses of the current pulse block in the second direction to the specified threshold value to obtain the second-direction pulse block.

[0011] Combined with the acoustic wave motor sweeping and vibrating method of the present invention, in the third possible implementation manner, the step 200 includes: Step 210: According to the first-direction pulse frequency, in accordance with the driving timing sequence of the first channel, with the third pulse-width step size, increase each first-block pulse width in the first direction. Step 220: According to the first-direction pulse frequency, after the pulse width of the first block increases to a specified threshold, reduce the pulse width of each first block in the first direction by the third pulse-width step. After the pulse width of the first block reduces by the specified threshold, increase the pulse width of the first block; Step 230: Repeat Step 210 - Step 220.

[0012] Combined with the third possible implementation manner of the present invention, in the fourth possible implementation manner, Step 200 further includes: Step 240: According to the second-direction pulse frequency, in accordance with the driving timing of the second channel, increase the pulse width of each second block in the second direction by the third pulse-width step; Step 250: According to the second-direction pulse frequency, after the pulse width of the second block increases to a specified threshold, reduce the pulse width of each second block in the second direction by the third pulse-width step. After the pulse width of the second block reduces by the specified threshold, increase the pulse width of the second block; Step 260: Repeat Step 240 - Step 250.

[0013] Combined with the acoustic motor sweeping and vibrating method described in the present invention, in the fifth possible implementation manner, Step 300 includes: Step 310: Obtain the first driving timing and the second driving timing of the first channel and the second channel respectively; Step 320: Output the first-direction composite pulse according to the first driving timing and output the second-direction composite pulse according to the second driving timing to drive the acoustic motor; Wherein, the high-level pulse intervals of the first driving timing and the second driving timing are output.

[0014] In a second aspect, a sweeping and vibrating toothbrush adopts the acoustic motor sweeping and vibrating method described in the first aspect, and includes: A sub-pulse-width adjustment module, configured to obtain the first block frequency in the first direction, perform a first adjustment on the pulse width of the sub-pulses of the current pulse block in the first direction according to the first block frequency and with a first pulse-width step to obtain a first-direction pulse block, obtain the second block frequency in the second direction, and perform a second adjustment on the pulse width of the sub-pulses of each pulse block in the second direction according to the second block frequency and with a second pulse-width step to obtain a second-direction pulse block with a timing interval from the first-direction pulse block; A block pulse-width adjustment module, configured to perform a third adjustment on the pulse width of each first block in the first direction according to the first-direction pulse frequency with a third pulse-width step to obtain a first-direction composite pulse, and perform a fourth adjustment on the pulse width of each second block in the second direction according to the second-direction pulse frequency with a fourth pulse-width step in a trend opposite to that of the third adjustment to obtain a second-direction composite pulse; A driving module, configured to input the first-direction composite pulse and the second-direction composite pulse to the acoustic motor through a first channel and a second channel respectively, so as to drive the acoustic motor to vibrate and swing.

[0015] In a first possible implementation manner of the sweeping and vibrating toothbrush according to the second aspect of the present invention, the sub-pulse width adjustment module includes: A first adjustment unit; The first adjustment unit is configured to gradually increase the pulse width of the sub-pulses of the current pulse block in the first direction according to the first block frequency and the first pulse width step, and according to the first block frequency, after the pulse width of the sub-pulses of the current pulse block in the first direction increases to a specified threshold, gradually decrease the pulse width of the sub-pulses of the current pulse block in the first direction to the specified threshold according to the first pulse width step, so as to obtain the first-direction pulse block.

[0016] In a second possible implementation manner of the sweeping and vibrating toothbrush according to the second aspect of the present invention, the sub-pulse width adjustment module includes: A second adjustment unit; The second adjustment unit is configured to gradually increase the pulse width of the sub-pulses of the current pulse block in the second direction according to the second block frequency and the second pulse width step, and according to the second block frequency, after the pulse width of the sub-pulses of the current pulse block in the second direction increases to a specified threshold, gradually decrease the pulse width of the sub-pulses of the current pulse block in the second direction to the specified threshold according to the second pulse width step, so as to obtain the second-direction pulse block.

[0017] In a third possible implementation manner of the sweeping and vibrating toothbrush according to the second aspect of the present invention, the block pulse width adjustment module includes: A third adjustment unit and a fourth adjustment unit; The third adjustment unit is configured to increase the pulse width of each first block in the first direction according to the first-direction pulse frequency and the driving timing of the first channel with the third pulse width step, and according to the first-direction pulse frequency, after the pulse width of the first block increases to a specified threshold, decrease the pulse width of each first block in the first direction with the third pulse width step, and after the pulse width of the first block decreases by the specified threshold, increase the pulse width of the first block; The fourth adjustment unit is configured to increase the pulse width of each second block in the second direction according to the second-direction pulse frequency and the driving timing of the second channel with the third pulse width step, and according to the second-direction pulse frequency, after the pulse width of the second block increases to a specified threshold, decrease the pulse width of each second block in the second direction with the third pulse width step, and after the pulse width of the second block decreases by the specified threshold, increase the pulse width of the second block; the adjustment trends of the third adjustment unit and the fourth adjustment unit are opposite.

[0018] Implementing the sonic motor sweeping vibration method and the sweeping vibration toothbrush of the present invention, by adjusting the pulse width of the sub-pulses of the pulse blocks in each direction and adjusting the pulses of the block pulses in each direction, not only achieves the sweeping vibration effect of the sonic motor, but also makes the drive control of the sweeping vibration motor more delicate and gentle, which helps to improve the user experience and enhance the sweeping vibration effect of the front sweeping vibration toothbrush. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0020] Figure 1 is the composite waveform schematic diagram in this application; Figure 2 is the schematic flow chart of a specific embodiment of a sonic motor sweeping vibration method in this application; Figure 3 is Figure 2 a schematic flow chart of a specific embodiment of step 100 in Figure 4 is Figure 2 another schematic flow chart of a specific embodiment of step 100 in Figure 5 is Figure 2 a schematic flow chart of a specific embodiment of step 200 in Figure 6 is Figure 2 another schematic flow chart of a specific embodiment of step 200 in Figure 7 is Figure 2 a schematic flow chart of a specific embodiment of step 300 in DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The following will clearly and completely describe the technical solutions in the present invention in conjunction with the drawings in the invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments in the present invention, other embodiments obtained by those of ordinary skill in the art without creative efforts all fall within the scope of protection of the present invention.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this invention belongs. The terms used in the description of the present invention herein are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0023] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0024] It should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0025] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality of" means two or more unless otherwise specifically defined.

[0026] In the existing sweeping and vibrating toothbrush using a sonic motor, its sweeping and vibrating motion is too rigid, reducing the user experience and the toothbrushing effect.

[0027] In view of the above problems, a sonic motor sweeping and vibrating method and a sweeping and vibrating toothbrush are proposed.

[0028] In a first aspect, a sonic motor sweeping and vibrating method, as Figure 2 , Figure 2 is a schematic flowchart of a specific embodiment of a sonic motor sweeping and vibrating method in the present application; including: Step 100, obtaining the first block frequency in the first direction, and performing a first adjustment on the pulse width of the sub-pulses of the current pulse block in the first direction according to the first block frequency and with the first pulse width step to obtain a first direction pulse block, obtaining the second block frequency in the second direction, and performing a second adjustment on the pulse width of the sub-pulses of each pulse block in the second direction according to the second block frequency and with the second pulse width step to obtain a second direction pulse block having a timing interval from the first direction pulse block.

[0029] In a preferred embodiment, as Figure 3 , Figure 3 is Figure 2 a schematic flow chart of a specific embodiment of step 100 in

[0030] In this embodiment, please refer to Figure 1 , Figure 1 is a schematic diagram of a composite waveform in this application; the first direction points to the direction of left sweep vibration, and the first block frequency refers to the frequency of each pulse in the first direction composite pulse 101, such as pulse block A and pulse block C. Inside each pulse block (pulse block A / pulse block C), each pulse width is different. Specifically, starting from the first sub-pulse, the pulse width gradually increases, and after reaching the maximum value, it gradually decreases.

[0031] In a preferred embodiment, as Figure 4 , Figure 4 is Figure 2 another schematic flow chart of a specific embodiment of step 100 in Step 130: Gradually increase the pulse width of the sub-pulses of the current pulse block in the second direction according to the second block frequency with a second pulse width step; Step 140: After the pulse width of the sub-pulses of the current pulse block in the second direction increases to a specified threshold, gradually reduce the pulse width of the sub-pulses of the current pulse block in the second direction to the specified threshold with the second pulse width step to obtain a second direction pulse block.

[0032] In this embodiment, please refer to Figure 1 , Figure 1 is a schematic diagram of a composite waveform in this application; the second direction points to the direction of left sweep vibration, and the second block frequency refers to the frequency of each pulse in the second direction composite pulse 201, such as pulse block B and pulse block D. Inside each pulse block (pulse block B / pulse block D), each pulse width is different. Specifically, starting from the first sub-pulse, the pulse width gradually increases, and after reaching the maximum value, it gradually decreases.

[0033] Step 200: Perform a third adjustment on each first block pulse width in the first direction with a third pulse width step according to the first direction pulse frequency to obtain a first direction composite pulse 101, and perform a fourth adjustment on each second block pulse width in the second direction with a fourth pulse width step opposite to the trend of the first adjustment according to the second direction pulse frequency to obtain a second direction composite pulse 201.

[0034] In a preferred embodiment, as Figure 5 , Figure 5 is Figure 2 a schematic flow diagram of a specific embodiment of step 200 in Step 210: According to the first-direction pulse frequency, in accordance with the driving timing of the first channel, increase the first block pulse width of each pulse in the first direction by a third pulse-width step; Step 220: According to the first-direction pulse frequency, after the first block pulse width increases to a specified threshold, decrease the first block pulse width of each pulse in the first direction by a third pulse-width step, and after the first block pulse width decreases by the specified threshold, increase the first block pulse width; Step 230: Repeat steps 210 - 220.

[0035] In this embodiment, please refer to Figure 1 , the first-direction pulse frequency refers to the frequency of the first-direction composite pulse 101, and the third pulse-width step refers to the change amplitude of the overall pulse width of each pulse block of the first-direction composite pulse 101. Generally speaking, the overall pulse width of the pulse blocks of the first-direction composite pulse 101 presents a cycle of increasing - decreasing - increasing.

[0036] In a preferred embodiment, as Figure 6 , Figure 6 is Figure 2 a schematic flow diagram of another specific embodiment of step 200 in

[0037] Step 200 further includes: Step 240: According to the second-direction pulse frequency, in accordance with the driving timing of the second channel, increase the second block pulse width of each pulse in the second direction by a third pulse-width step; Step 250: According to the second-direction pulse frequency, after the second block pulse width increases to a specified threshold, decrease the second block pulse width of each pulse in the second direction by a third pulse-width step, and after the second block pulse width decreases by the specified threshold, increase the second block pulse width; Step 260: Repeat steps 240 - 250. Figure 1 In this embodiment, please refer to

[0038] Generally speaking, the overall pulse width of the pulse blocks of the first-direction composite pulse 101 and the second-direction composite pulse 201 has an opposite (complementary) change trend. Please refer to Figure 1 , the pulse width of pulse block A - pulse block C gradually increases, while the pulse width of pulse block B - pulse block D gradually decreases.

[0039] Step 300: Input the first-direction composite pulse 101 and the second-direction composite pulse 201 into the sonic motor through the first channel and the second channel respectively, to drive the sonic motor to vibrate and swing.

[0040] In a preferred embodiment, as Figure 7 , Figure 7 is Figure 2 a schematic flow diagram of a specific embodiment of step 300 in

[0041] In this embodiment, please refer to Figure 1 , generally speaking, the pulse block interval of the first-direction composite pulse 101 and the second-direction composite pulse 201 drives the sonic motor with a high level.

[0042] By adjusting the pulse width of the sub-pulses of the pulse block in each direction and adjusting the pulses of the block pulses in each direction, not only the sweeping and vibrating effect of the sonic motor is achieved, but also the driving control of the sweeping and vibrating motor is more delicate and gentle, which helps to improve the user experience and enhance the sweeping and vibrating effect of the front sweeping toothbrush.

[0043] Generally speaking, the pulse block interval of the first-direction composite pulse 101 and the second-direction composite pulse 201 is high level, realizing the swinging in the left and right directions, while the sub-pulses within each pulse block are used to realize the vibration at each swinging position, and the composite presents a sweeping and vibrating motion.

[0044] In a second aspect, a sweeping and vibrating toothbrush, adopting the sonic motor sweeping and vibrating method of the first aspect, includes: A sub-pulse width adjustment module, configured to obtain the first block frequency in the first direction, and perform a first adjustment on the pulse width of the sub-pulses of the current pulse block in the first direction according to the first block frequency and with a first pulse width step length to obtain a first-direction pulse block, obtain the second block frequency in the second direction, and perform a second adjustment on the pulse width of the sub-pulses of each pulse block in the second direction according to the second block frequency and with a second pulse width step length to obtain a second-direction pulse block with a time sequence interval from the first-direction pulse block; A block pulse width adjustment module, configured to perform a third adjustment on the pulse width of each first block in the first direction according to the first-direction pulse frequency and with a third pulse width step length to obtain the first-direction composite pulse 101, and perform a fourth adjustment on the pulse width of each second block in the second direction according to the second-direction pulse frequency and with a fourth pulse width step length in a trend opposite to the first adjustment to obtain the second-direction composite pulse 201; A driving module, configured to input a first-direction composite pulse 101 and a second-direction composite pulse 201 into the sonic motor through a first channel and a second channel respectively, so as to drive the sonic motor to vibrate and swing.

[0045] Further, the sub-pulse width adjustment module includes a first adjustment unit; the first adjustment unit is configured to gradually increase the pulse width of the sub-pulses of the current pulse block in the first direction according to the first block frequency with a first pulse width step size, and according to the first block frequency, after the pulse width of the sub-pulses of the current pulse block in the first direction increases to a specified threshold, gradually decrease the pulse width of the sub-pulses of the current pulse block in the first direction to the specified threshold with the first pulse width step size, so as to obtain a first-direction pulse block.

[0046] Further, the sub-pulse width adjustment module includes a second adjustment unit; the second adjustment unit is configured to gradually increase the pulse width of the sub-pulses of the current pulse block in the second direction according to the second block frequency with a second pulse width step size, and according to the second block frequency, after the pulse width of the sub-pulses of the current pulse block in the second direction increases to a specified threshold, gradually decrease the pulse width of the sub-pulses of the current pulse block in the second direction to the specified threshold with the second pulse width step size, so as to obtain a second-direction pulse block.

[0047] Further, the block pulse width adjustment module includes: a third adjustment unit and a fourth adjustment unit; The third adjustment unit is configured to increase the pulse width of each first block in the first direction according to the first-direction pulse frequency and in accordance with the driving timing of the first channel with a third pulse width step size, and according to the first-direction pulse frequency, after the pulse width of the first block increases to a specified threshold, decrease the pulse width of each first block in the first direction with the third pulse width step size, and after the pulse width of the first block decreases by the specified threshold, increase the pulse width of the first block; The fourth adjustment unit is configured to increase the pulse width of each second block in the second direction according to the second-direction pulse frequency and in accordance with the driving timing of the second channel with a third pulse width step size, and according to the second-direction pulse frequency, after the pulse width of the second block increases to a specified threshold, decrease the pulse width of each second block in the second direction with the third pulse width step size, and after the pulse width of the second block decreases by the specified threshold, increase the pulse width of the second block; the adjustment trends of the third adjustment unit and the fourth adjustment unit are opposite.

[0048] Implementing the sonic motor sweeping and vibrating method and the sweeping and vibrating toothbrush of the present invention, by adjusting the pulse width of the sub-pulses of the pulse blocks in each direction and adjusting the pulses of the block pulses in each direction, not only realizes the sweeping and vibrating effect of the sonic motor, but also makes the driving control of the sweeping and vibrating motor more delicate and gentle, which helps to improve the user experience and enhance the sweeping and vibrating effect of the front sweeping and vibrating toothbrush.

[0049] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A method for sweeping and vibrating of a sonic motor, characterized in that Including: Step 100: Obtain the first block frequency in the first direction, and perform a first adjustment on the pulse width of the sub-pulses of the current pulse block in the first direction according to the first block frequency and with a first pulse width step size to obtain a first-direction pulse block; obtain the second block frequency in the second direction, and perform a second adjustment on the pulse width of the sub-pulses of each pulse block in the second direction according to the second block frequency and with a second pulse width step size to obtain a second-direction pulse block that has a timing interval from the first-direction pulse block; Step 200: According to the first-direction pulse frequency, perform a third adjustment on each first block pulse width in the first direction with a third pulse width step size to obtain a first-direction composite pulse; according to the second-direction pulse frequency, perform a fourth adjustment on each second block pulse width in the second direction with a fourth pulse width step size that has a trend opposite to that of the third adjustment to obtain a second-direction composite pulse; Step 300: Input the first-direction composite pulse and the second-direction composite pulse into the acoustic motor through a first channel and a second channel respectively to drive the acoustic motor to vibrate and swing.

2. The sonic motor sweeping and vibrating method according to claim 1, wherein The said Step 100 includes: Step 110: According to the first block frequency, gradually increase the pulse width of the sub-pulses of the current pulse block in the first direction with the first pulse width step size; Step 120: According to the first block frequency, after the pulse width of the sub-pulses of the current pulse block in the first direction increases to a specified threshold value, gradually decrease the pulse width of the sub-pulses of the current pulse block in the first direction to the specified threshold value with the first pulse width step size to obtain the first-direction pulse block.

3. The sonic motor sweeping and vibrating method according to claim 1, characterized in that, The said Step 100 further includes: Step 130: According to the second block frequency, gradually increase the pulse width of the sub-pulses of the current pulse block in the second direction with the second pulse width step size; Step 140: According to the second block frequency, after the pulse width of the sub-pulses of the current pulse block in the second direction increases to a specified threshold value, gradually decrease the pulse width of the sub-pulses of the current pulse block in the second direction to the specified threshold value with the second pulse width step size to obtain the second-direction pulse block.

4. The sonic motor sweep vibration method according to claim 1, characterized in that, The said Step 200 includes: Step 210: According to the first-direction pulse frequency, and in accordance with the driving timing of the first channel, increase each first block pulse width in the first direction with the third pulse width step size; Step 220: According to the first-direction pulse frequency, after the first block pulse width increases to a specified threshold value, decrease each first block pulse width in the first direction with the third pulse width step size; after the first block pulse width decreases by the specified threshold value, increase the first block pulse width; Step 230: Repeat Step 210 - Step 220.

5. The sonic motor sweeping and vibrating method according to claim 4, characterized in that The said Step 200 further includes: Step 240: According to the second-direction pulse frequency, and in accordance with the driving timing of the second channel, increase each second block pulse width in the second direction with the third pulse width step size; Step 250: According to the second-direction pulse frequency, after the second block pulse width increases to a specified threshold value, decrease each second block pulse width in the second direction with the third pulse width step size; after the second block pulse width decreases by the specified threshold value, increase the second block pulse width; Step 260: Repeat Step 240 - Step 250.

6. The sonic motor sweeping and vibrating method according to claim 1, characterized in that The said Step 300 includes: Step 310: Obtain the first driving timing sequence and the second driving timing sequence of the first channel and the second channel respectively; Step 320: Output the composite pulse in the first direction according to the first driving timing sequence and output the composite pulse in the second direction according to the second driving timing sequence to drive the ultrasonic motor; Among them, the high-level pulse intervals of the first driving timing sequence and the second driving timing sequence are output.

7. A sweeping and vibrating toothbrush, which adopts the sonic motor sweeping and vibrating method described in any one of claims 1-6, is characterized in that, It includes: A sub-pulse width adjustment module, configured to obtain the first block frequency in the first direction, and perform a first adjustment on the pulse width of the sub-pulses of the current pulse block in the first direction according to the first block frequency and with a first pulse width step size to obtain a pulse block in the first direction, obtain the second block frequency in the second direction, and perform a second adjustment on the pulse width of the sub-pulses of each pulse block in the second direction according to the second block frequency and with a second pulse width step size to obtain a pulse block in the second direction whose timing is spaced from the pulse block in the first direction; A block pulse width adjustment module, configured to perform a third adjustment on the pulse width of each first block in the first direction according to the pulse frequency in the first direction and with a third pulse width step size to obtain a composite pulse in the first direction, and perform a fourth adjustment on the pulse width of each second block in the second direction according to the pulse frequency in the second direction and with a fourth pulse width step size, which is opposite to the trend of the third adjustment, to obtain a composite pulse in the second direction; A driving module, configured to input the composite pulse in the first direction and the composite pulse in the second direction to the ultrasonic motor through the first channel and the second channel respectively to drive the ultrasonic motor to vibrate and swing.

8. The sweeping and vibrating toothbrush according to claim 7, wherein, The sub-pulse width adjustment module includes: A first adjustment unit; The first adjustment unit is configured to gradually increase the pulse width of the sub-pulses of the current pulse block in the first direction according to the first block frequency and with the first pulse width step size, and according to the first block frequency, after the pulse width of the sub-pulses of the current pulse block in the first direction increases to a specified threshold value, gradually reduce the pulse width of the sub-pulses of the current pulse block in the first direction to the specified threshold value with the first pulse width step size to obtain the pulse block in the first direction.

9. The sweeping and vibrating toothbrush according to claim 8, wherein, The sub-pulse width adjustment module includes: A second adjustment unit; The second adjustment unit is configured to gradually increase the pulse width of the sub-pulses of the current pulse block in the second direction according to the second block frequency and with the second pulse width step size, and according to the second block frequency, after the pulse width of the sub-pulses of the current pulse block in the second direction increases to a specified threshold value, gradually reduce the pulse width of the sub-pulses of the current pulse block in the second direction to the specified threshold value with the second pulse width step size to obtain the pulse block in the second direction.

10. The sweeping and vibrating toothbrush according to claim 7, wherein, The block pulse width adjustment module includes: A third adjustment unit and a fourth adjustment unit; The third adjustment unit is configured to increase the pulse width of each first block in the first direction according to the pulse frequency in the first direction and in accordance with the driving timing sequence of the first channel with the third pulse width step size, and according to the pulse frequency in the first direction, after the first block pulse width increases to a specified threshold value, reduce the pulse width of each first block in the first direction with the third pulse width step size, and after the first block pulse width is reduced by the specified threshold value, increase the first block pulse width; The fourth adjustment unit is configured to increase each second block pulse width in the second direction by the third pulse width step according to the second direction pulse frequency and in accordance with the driving timing of the second channel, and to decrease each second block pulse width in the second direction by the third pulse width step after the second block pulse width increases to a specified threshold according to the second direction pulse frequency. After the second block pulse width decreases by the specified threshold, the second block pulse width is increased; the adjustment trend of the third adjustment unit is opposite to that of the fourth adjustment unit.

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