A vibration sweeping structure using a sonic motor

Abstract

This utility model discloses a sweeping and vibration structure using a sonic motor, including a toothbrush handle, a charging interface, a bracket, a power supply, a sonic motor, a motherboard, a main control chip, a driver, an H-bridge drive circuit, and a brush head. The charging interface is located at the bottom of the toothbrush handle. The bracket is installed inside the toothbrush handle. The power supply is installed at the bottom of the bracket via the charging interface. The sonic motor is installed on the upper part of the bracket. The motherboard is installed on the side of the bracket via the sonic motor and the power supply. The main control chip is installed at the bottom of the motherboard. The driver is installed at the top of the motherboard. The H-bridge drive circuit is distributed on the motherboard. The brush head is installed on the top of the toothbrush handle via the sonic motor. This utility model solves the problem of high R&D costs and technical difficulty in developing sweeping and vibration structures for electric toothbrushes.

Description

Technical Field

[0001] This utility model relates to the field of electric toothbrushes, and in particular to a sweeping structure that utilizes a sonic motor. Background Technology

[0002] Electric toothbrushes are now widely used in people's daily lives. Currently, the brush heads of these electric toothbrushes operate through rotation, vibration, and sweeping / vibration. Rotation uses a high-speed rotary motor with a mechanical structure to rotate the brush head. Sweeping / vibration uses a brushless motor, whose angle control produces a sweeping and vibrating motion. Vibration primarily uses a sonic motor to generate a reciprocating sweeping effect by varying symmetrical square waves.

[0003] The "sweeping and vibrating" function of electric toothbrushes combines high-speed vibration with gentle, sweeping motions, making them more efficient at cleaning teeth and gaining popularity in the market. However, developing and implementing this function in electric toothbrushes is costly and technically challenging. Utility Model Content

[0004] The purpose of this invention is to provide a vibration sweeping structure using a sonic motor to solve the aforementioned technical problems.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a sweeping and vibrating structure using a sonic motor, comprising a toothbrush handle, a charging interface, a bracket, a power supply, a sonic motor, a motherboard, a main control chip, a driver, an H-bridge drive circuit, and a brush head. The toothbrush handle has a charging interface at its bottom. The bracket is installed inside the toothbrush handle. The power supply is installed at the bottom of the bracket through the charging interface. The sonic motor is installed on the upper part of the bracket. The motherboard is installed on the side of the bracket through the sonic motor and the power supply. The main control chip is installed on the lower part of the motherboard. The driver is installed on the upper part of the motherboard. The H-bridge drive circuit is distributed on the motherboard. The brush head is installed on the top of the toothbrush handle through the sonic motor.

[0006] Based on the above technical solution, the H-bridge drive circuit has four switches, P1 and P2 are located on the power supply side, and N1 and N2 are located on the ground side. The direction of the current flowing through the acoustic motor is changed by controlling the high or low level state of the switches.

[0007] Based on the above technical solution, the main control chip controls the H-bridge drive circuit to set P1 to L level, P2 to H level, N1 to L level, and N2 to H level, so that the current flows from the power supply through P2 to the acoustic motor, and then returns to ground through N2, causing the brush head to move to the left.

[0008] Based on the above technical solution, the main control chip controls the H-bridge drive circuit to set P1 to H level, P2 to L level, N1 to H level, and N2 to L level, so that the current flows from the power supply through P1 to the acoustic motor, and then returns to ground from N1, causing the brush head to move to the right.

[0009] Based on the above technical solution, the main control chip sets the duty cycle of the left brush waveform to 90% and the right brush waveform to 20%. When the brush head sweeps to the far left, a vibration effect will be generated due to the asymmetrical duty cycle setting.

[0010] Based on the above technical solution, after the left brush sweep is completed, the main control chip continues to adjust the duty cycle, gradually increasing the duty cycle of the right brush and decreasing the duty cycle of the left brush, thereby realizing the right brush head sweep process.

[0011] Based on the above technical solution, after each action is completed, the main control chip gradually adjusts the left and right duty cycles until the sweeping and vibration process from left to right of the brush head is completed.

[0012] Compared with existing technologies, this invention has the following advantages: This invention achieves a "sweeping + vibrating" effect by using a sonic motor commonly found in electric toothbrushes and adjusting the switching states (P1, P2, N1, N2) and duty cycle in the H-bridge circuit. During left sweeping, the left brush waveform is set to 90% duty cycle, and the right brush to 20%, causing vibration when the brush head is at its far left. The system gradually adjusts these values ​​to achieve a smooth transition and continuous "sweeping + vibrating" action. This method requires no major hardware modifications; cleaning efficiency and user experience can be improved solely through software adjustments, overcoming the problems of high R&D costs and technical difficulty. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the appearance and structure of this utility model.

[0014] Figure 2 This is a schematic diagram of the internal structure of this utility model.

[0015] Figure 3 This is a schematic diagram of the H-bridge circuit of this utility model.

[0016] Figure 4 This is a schematic diagram of the driving waveform of this utility model.

[0017] In the diagram: 1. Toothbrush handle, 2. Charging port, 3. Stand, 4. Power supply, 5. Sonic motor, 6. Motherboard, 7. Main control chip, 8. Driver, 9. H-bridge drive circuit, 10. Brush head. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0019] like Figures 1 to 4 As shown, a sweeping structure using a sonic motor includes a toothbrush handle 1, a charging interface 2, a bracket 3, a power supply 4, a sonic motor 5, a main board 6, a main control chip 7, a driver 8, an H-bridge drive circuit 9, and a brush head 10. The toothbrush handle 1 has a charging interface 2 at its bottom. The bracket 3 is installed inside the toothbrush handle 1. The power supply 4 is installed at the bottom of the bracket 3 through the charging interface 2. The sonic motor 5 is installed on the upper part of the bracket 3. The main board 6 is installed on the side of the bracket 3 through the sonic motor 5 and the power supply 4. The main control chip 7 is installed on the lower part of the main board 6. The driver 8 is installed on the upper part of the main board 6. The H-bridge drive circuit 9 is distributed on the main board 6. The brush head 10 is installed on the top of the toothbrush handle 1 through the sonic motor 5.

[0020] The H-bridge drive circuit 9 has four switches, P1 and P2 on the power supply side and N1 and N2 on the ground side. The direction of the current flowing through the acoustic motor 5 is changed by controlling the high or low level state of the switches.

[0021] The main control chip 7 controls the H-bridge drive circuit 9 to set P1 to L level, P2 to H level, N1 to L level, and N2 to H level, so that the current flows from the power supply 4 through P2 to the acoustic motor 5, and then returns to ground through N2, causing the brush head 10 to move to the left.

[0022] The main control chip 7 controls the H-bridge drive circuit 9 to set P1 to H level, P2 to L level, N1 to H level, and N2 to L level, so that the current flows from the power supply 4 through P1 to the acoustic motor 5, and then returns to ground through N1, causing the brush head 10 to move to the right.

[0023] The main control chip 7 sets the duty cycle of the left brush waveform to 90% and the right brush waveform to 20%, based on the left brush. When the brush head 10 sweeps to the far left, a vibration effect is generated due to the asymmetrical duty cycle settings.

[0024] After the left sweep vibration is completed, the main control chip 7 continues to adjust the duty cycle, gradually increasing the duty cycle of the right brush and decreasing the duty cycle of the left brush, so as to realize the right sweep vibration process of the brush head 10.

[0025] After each action, the main control chip 7 gradually adjusts the left and right duty cycles until the sweeping and vibration process from the brush head 10 is completed.

[0026] The working principle of this invention is as follows: In use, power is turned on (4) to start the sonic motor (5), which drives the brush head (10) to move. The main control chip (7), based on the left brush, sets the duty cycle of the left brush waveform to 90% and the right brush waveform to 20%. When the brush head (10) sweeps to the far left, the asymmetrical duty cycle settings produce a vibration effect. The main control chip (7) controls the H-bridge drive circuit (9) to set P1 to low level, P2 to high level, N1 to low level, and N2 to high level, causing current to flow from power supply (4) through P2 to the sonic motor (5), and then back to ground through N2, moving the brush head (10) to the left. After the left sweep vibration is completed, the main control chip (7) continues to adjust the duty cycle, gradually increasing the right brush duty cycle and decreasing the left brush duty cycle, thus achieving the right sweep vibration process of the brush head (10). The main control chip 7 controls the H-bridge drive circuit 9 to set P1 to H level, P2 to L level, N1 to H level, and N2 to L level, causing current to flow from the power supply 4 through P1 to the sonic motor 5, and then back to ground through N1, thus moving the brush head 10 to the right. By using a sonic motor commonly used in electric toothbrushes, cleaning efficiency and user experience can be improved through software adjustments without major hardware modifications, overcoming the problems of high R&D costs and technical difficulties.

[0027] The above description is a preferred embodiment of the present utility model. For those skilled in the art, any changes, modifications, substitutions and variations made to the implementation methods without departing from the principles and spirit of the present utility model, based on the teachings of the present utility model, still fall within the protection scope of the present utility model.

Claims

1. A sweeping structure utilizing a sonic motor, comprising a toothbrush handle (1), a charging interface (2), a bracket (3), a power supply (4), a sonic motor (5), a motherboard (6), a main control chip (7), a driver (8), an H-bridge drive circuit (9), and a brush head (10), characterized in that: The toothbrush handle (1) has a charging port (2) at the bottom. The bracket (3) is installed inside the toothbrush handle (1). The power supply (4) is installed at the bottom of the bracket (3) through the charging port (2). The sonic motor (5) is installed on the upper part of the bracket (3). The main board (6) is installed on the side of the bracket (3) through the sonic motor (5) and the power supply (4). The main control chip (7) is installed on the lower part of the main board (6). The driver (8) is installed on the upper part of the main board (6). The H-bridge drive circuit (9) is distributed on the main board (6). The brush head (10) is installed on the top of the toothbrush handle (1) through the sonic motor (5).

2. The sweep structure realized by using the acoustic wave motor according to claim 1, characterized in that: The H-bridge drive circuit (9) has four switches, P1 and P2 on the power supply side and N1 and N2 on the ground side. The direction of the current flowing through the acoustic motor (5) is changed by controlling the high or low level state of the switches.

3. The scan shock structure using acoustic wave motor according to claim 2, characterized in that: The main control chip (7) controls the H-bridge drive circuit (9) to set P1 to L level, P2 to H level, N1 to L level, and N2 to H level, so that the current flows from the power supply (4) through P2 to the acoustic motor (5) and then returns to ground from N2, causing the brush head (10) to move to the left.

4. The scan shock structure using acoustic wave motor according to claim 2, characterized in that: The main control chip (7) controls the H-bridge drive circuit (9) to set P1 to H level, P2 to L level, N1 to H level, and N2 to L level, so that the current flows from the power supply (4) through P1 to the acoustic motor (5) and then returns to ground from N1, causing the brush head (10) to move to the right.

5. The scan shock structure using acoustic wave motor according to claim 3, characterized in that: The main control chip (7) sets the duty cycle of the left brush waveform to 90% and the right brush waveform to 20% on the basis of the left brush. When the brush head (10) sweeps to the leftmost side, a vibration effect will be generated due to the asymmetrical duty cycle setting.

6. The scan shock structure using acoustic wave motor according to claim 5, characterized in that: After the left sweep vibration is completed, the main control chip (7) continues to adjust the duty cycle, gradually increasing the duty cycle of the right brush and decreasing the duty cycle of the left brush, so as to realize the right sweep vibration process of the brush head (10).

7. The scan shock structure using acoustic wave motor according to claim 6, characterized in that: After each action is completed, the main control chip (7) gradually adjusts the left and right duty cycles until the sweeping and vibration process from the left and right of the brush head (10) is completed.

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