CN-224218304-U - Driving circuit, electric toothbrush body and electric toothbrush

CN224218304UCN 224218304 UCN224218304 UCN 224218304UCN-224218304-U

Abstract

The utility model discloses a driving circuit, an electric toothbrush body and an electric toothbrush, wherein the driving circuit comprises a first switch circuit and a second switch circuit, the input end of the first switch circuit is connected with a battery, the output end of the first switch circuit is respectively connected with the input end of the second switch circuit and a first electrode of a motor, the output end of the second switch circuit is grounded, the input end of the third switch circuit is connected with the battery, the output end of the third switch circuit is respectively connected with the input end of the fourth switch circuit and a second electrode of the motor, the output end of the fourth switch circuit is grounded, and a main control circuit is respectively connected with the controlled end of the first switch circuit, the controlled end of the second switch circuit, the controlled end of the third switch circuit and the controlled end of the fourth switch circuit.

Inventors

YE WENJIE
ZHENG CHUANZHOU
LI DONGBAO

Assignees

深圳瑞圣特电子科技有限公司

Dates

Publication Date: 20260508
Application Date: 20250414

Claims (10)

1. A drive circuit for an electric toothbrush, the electric toothbrush comprising an electric toothbrush body and a toothbrush head, the electric toothbrush body comprising a motor, the motor being drivingly connected with the toothbrush head, the drive circuit comprising: The output end of the first switch circuit is respectively connected with the input end of the second switch circuit and the first electrode of the motor, and the output end of the second switch circuit is grounded; The input end of the third switching circuit is connected with a battery, the output end of the third switching circuit is respectively connected with the input end of the fourth switching circuit and the second electrode of the motor, and the output end of the fourth switching circuit is grounded; The main control circuit is respectively connected with the controlled end of the first switch circuit, the controlled end of the second switch circuit, the controlled end of the third switch circuit and the controlled end of the fourth switch circuit; The main control circuit is used for alternately controlling the first switch circuit and the fourth switch circuit to be switched on/off and controlling the second switch circuit and the third switch circuit to be switched off/on when a preset control instruction is received, so as to control the motor to alternately run between forward rotation and reverse rotation.
2. The drive circuit of claim 1, wherein the first switching circuit comprises a first switching tube, the second switching circuit comprises a second switching tube, the third switching circuit comprises a third switching tube, and the fourth switching circuit comprises a fourth switching tube; The input end of the first switching tube and the input end of the third switching tube are connected with batteries, the output end of the first switching tube is connected with the input end of the second switching tube, the output end of the second switching tube is connected with the input end of the fourth switching tube, and the output end of the third switching tube and the output end of the fourth switching tube are grounded; The controlled end of the first switching tube, the controlled end of the second switching tube, the controlled end of the third switching tube and the controlled end of the fourth switching tube are electrically connected with the main control circuit; The output end of the first switching tube and the input end of the second switching tube are electrically connected with the first electrode of the motor, and the output end of the third switching tube and the input end of the fourth switching tube are electrically connected with the second electrode of the motor.
3. The drive circuit of claim 2, wherein the first switching circuit further comprises: The first end of the first resistor is connected with the battery, the second end of the first resistor and the second end of the second resistor are both connected with the controlled end of the first switch tube, and the first end of the second resistor is electrically connected with the main control circuit; the second switching circuit further includes: The first end of the third resistor and the second end of the fourth resistor are connected with the controlled end of the second switch tube, the second end of the third resistor is grounded, and the first end of the fourth resistor is electrically connected with the main control circuit; the third switching circuit further includes: The first end of the fifth resistor is connected with the battery, the second end of the fifth resistor and the second end of the sixth resistor are both connected with the controlled end of the third switch tube, and the first end of the sixth resistor is electrically connected with the main control circuit; the fourth switching circuit further includes: The first end of the seventh resistor and the second end of the eighth resistor are connected with the controlled end of the fourth switching tube, the second end of the seventh resistor is grounded, and the first end of the eighth resistor is electrically connected with the main control circuit.
4. A drive circuit as claimed in any one of claims 1 to 3, wherein the drive circuit further comprises: The trigger assembly is electrically connected with the main control circuit, and is used for outputting corresponding trigger signals when triggered, and the main control circuit is used for alternately controlling the first switch circuit and the four switch circuit to be switched on/off and controlling the second switch circuit and the third switch circuit to be switched off/on when detecting that the trigger signals are preset control instructions.
5. An electric toothbrush body comprising a motor and a drive circuit according to any one of claims 1 to 4, wherein the motor is electrically connected to the drive circuit.
6. The electric toothbrush body of claim 5, wherein the electric toothbrush body comprises: the power supply input end is used for being connected with an external power supply; The battery is connected with the power input end; The detection end of the current acquisition circuit is connected with the power input end, the output end of the current acquisition circuit is electrically connected with the main control circuit, and the current acquisition circuit is used for outputting a current acquisition signal when current is acquired; The main control circuit is used for controlling the indication lamp to light when receiving the current acquisition signal.
7. The electric toothbrush body of claim 6, wherein the current harvesting circuit comprises: The input end of the fifth switch tube is electrically connected with the main control circuit, the controlled end of the fifth switch tube is connected with the first end of the ninth resistor, the second end of the ninth resistor is connected with the first end of the first capacitor, the first end of the first capacitor is also connected with the power input end, and the second end of the tenth resistor, the output end of the fifth switch tube and the second end of the first capacitor are all grounded.
8. The electric toothbrush body according to claim 7, the electric toothbrush is characterized in that the electric toothbrush body further comprises: And the clamping circuit is electrically connected with the detection end of the current acquisition circuit and is used for limiting the voltage input from the power input end to the current acquisition circuit within a preset voltage threshold.
9. The electric toothbrush body of claim 8, wherein the clamp circuit comprises: The cathode of the voltage stabilizing diode is electrically connected with the detection end of the current acquisition circuit, and the anode of the voltage stabilizing diode is grounded.
10. An electric toothbrush comprising an electric toothbrush body as claimed in any one of claims 5 to 9 and a brush head detachably connected to the electric toothbrush body.

Description

Driving circuit, electric toothbrush body and electric toothbrush Technical Field The utility model relates to the technical field of electric toothbrushes, in particular to a driving circuit, an electric toothbrush body and an electric toothbrush. Background With the increasing awareness of health, electric toothbrushes are becoming an important tool for daily oral care. Compared with the traditional manual toothbrush, the electric toothbrush can clean the tooth surface and the tooth gap area more efficiently through high-speed rotation, vibration or swinging and the like, meanwhile, the burden of user operation is reduced, and the cleaning effect is remarkably improved. However, the existing electric toothbrush still has a plurality of defects in functional design, especially has single performance in terms of working mode, only supports the vibration of rotation in a single direction, and is difficult to meet the diversified demands of different users. Disclosure of utility model The utility model mainly aims to provide a driving circuit, an electric toothbrush body and an electric toothbrush, and aims to solve the technical problem that the motion mode of the existing electric toothbrush is single. In order to achieve the above object, the present utility model provides a driving circuit applied to an electric toothbrush, the electric toothbrush including an electric toothbrush body and a toothbrush head, the electric toothbrush body including a motor, the motor being in driving connection with the toothbrush head, the driving circuit comprising: The output end of the first switch circuit is respectively connected with the input end of the second switch circuit and the first electrode of the motor, and the output end of the second switch circuit is grounded; The input end of the third switching circuit is connected with a battery, the output end of the third switching circuit is respectively connected with the input end of the fourth switching circuit and the second electrode of the motor, and the output end of the fourth switching circuit is grounded; The main control circuit is respectively connected with the controlled end of the first switch circuit, the controlled end of the second switch circuit, the controlled end of the third switch circuit and the controlled end of the fourth switch circuit; The main control circuit is used for alternately controlling the first switch circuit and the fourth switch circuit to be switched on/off and controlling the second switch circuit and the third switch circuit to be switched off/on when a preset control instruction is received, so as to control the motor to alternately run between forward rotation and reverse rotation. In an embodiment, the first switching circuit comprises a first switching tube, the second switching circuit comprises a second switching tube, the third switching circuit comprises a third switching tube, and the fourth switching circuit comprises a fourth switching tube; The input end of the first switching tube and the input end of the third switching tube are connected with batteries, the output end of the first switching tube is connected with the input end of the second switching tube, the output end of the second switching tube is connected with the input end of the fourth switching tube, and the output end of the third switching tube and the output end of the fourth switching tube are grounded; The controlled end of the first switching tube, the controlled end of the second switching tube, the controlled end of the third switching tube and the controlled end of the fourth switching tube are electrically connected with the main control circuit; The output end of the first switching tube and the input end of the second switching tube are electrically connected with the first electrode of the motor, and the output end of the third switching tube and the input end of the fourth switching tube are electrically connected with the second electrode of the motor. In an embodiment, the first switching circuit further includes: The first end of the first resistor is connected with the battery, the second end of the first resistor and the second end of the second resistor are both connected with the controlled end of the first switch tube, and the first end of the second resistor is electrically connected with the main control circuit; the second switching circuit further includes: The first end of the third resistor and the second end of the fourth resistor are connected with the controlled end of the second switch tube, the second end of the third resistor is grounded, and the first end of the fourth resistor is electrically connected with the main control circuit; the third switching circuit further includes: The first end of the fifth resistor is connected with the battery, the second end of the fifth resistor and the second end of the sixth resistor are both connected with the controlled end of the third switch tube, and the first end of the