Electric toothbrush

Abstract

The present invention provides an electric toothbrush, comprising a toothbrush head and a handle connected to the toothbrush head, the handle comprising a shell, a driving mechanism and a pressure control mechanism, the shell being connected to the toothbrush head and having a receiving cavity; the driving mechanism being located in the receiving cavity and connected to the toothbrush head, the driving mechanism being able to drive the toothbrush head to vibrate; the pressure control mechanism being arranged in the driving mechanism, the pressure control mechanism being in contact with the cavity wall of the receiving cavity facing away from the working direction and being used to sense the pressure applied by the cavity wall of the receiving cavity to the driving mechanism; the driving mechanism having an on state and an off state, the driving mechanism being able to be in an off state when the pressure value sensed by the pressure control mechanism is equal to or greater than a preset value, and being able to be in an on state when the pressure value sensed by the pressure control mechanism is less than a preset value. The user can realize the on-off operation of the electric toothbrush through the necessary actions when brushing teeth, without having to operate a key or a push button, the operation is more intelligent and convenient, and the sense of science and technology and user experience are enhanced.

Description

Technical Field

[0001] The invention belongs to the technical field of toothbrushing appliances, and in particular relates to an electric toothbrush. Background Art

[0002] Electric toothbrushes have been accepted by the public for their efficient teeth cleaning effect. As more and more brands and manufacturers join the electric toothbrush industry, the electric toothbrush technology is being updated. Existing electric toothbrushes all need to be turned on and off by operating buttons or push buttons, which lacks a sense of technology and intelligence, and the operation process is cumbersome. Summary of the invention

[0003] The purpose of the present invention is to provide an electric toothbrush, aiming to solve the technical problem that the switches of existing electric toothbrushes all require users to operate buttons or push buttons, which lack a sense of technology.

[0004] The present invention is implemented as follows: an electric toothbrush comprises a toothbrush head and a handle connected to the toothbrush head, wherein the toothbrush head comprises a brush rod and bristles connected to the brush rod and extending toward a working direction, and the handle comprises:

[0005] A shell connected to the toothbrush head and having a receiving cavity;

[0006] A driving mechanism, located in the accommodating cavity and connected to the toothbrush head, the driving mechanism being capable of driving the toothbrush head to vibrate;

[0007] a pressure control mechanism, disposed on the driving mechanism and electrically connected to the driving mechanism, the pressure control mechanism being in contact with a cavity wall of the accommodating cavity facing away from the operation direction and being used to sense the pressure exerted by the cavity wall of the accommodating cavity on the driving mechanism;

[0008] Among them, the driving mechanism has an on state of continuous vibration and an off state of stopping vibration. The driving mechanism can be in the off state when the pressure value sensed by the pressure control mechanism is equal to or greater than a preset value, and can also switch to the on state when the pressure value sensed by the pressure control mechanism is less than the preset value.

[0009] In one embodiment, the shell includes a handpiece and an abutment member, the handpiece has the accommodating cavity, the abutment member is detachably connected to the cavity wall of the accommodating cavity facing away from the working direction, and the pressure control mechanism abuts against the abutment member and is used to sense the pressure applied by the abutment member to the driving mechanism.

[0010] In one embodiment, the abutment member is an elastic member and is always in abutment with the pressure sensor during the vibration of the driving mechanism.

[0011] In one embodiment, the driving mechanism includes a motor, an output shaft connected to the output end of the motor, and a control circuit board electrically connected to the motor, the control circuit board is electrically connected to the motor, the pressure control mechanism is electrically connected to the control circuit board, the output shaft is connected to the toothbrush head, and the motor can drive the toothbrush head to vibrate by driving the output shaft to vibrate.

[0012] In one embodiment, the abutment member is annular and is sleeved on the motor and the control circuit board, and the pressure sensor is clamped between the side surface of the control circuit board facing the working direction and the inner annular surface of the abutment member facing away from the working direction.

[0013] In one embodiment, the driving mechanism further includes a bracket assembly connected to the housing and a battery connected to the bracket assembly, and the motor and the control circuit board are both connected to the bracket assembly.

[0014] In one embodiment, the support assembly includes a first support frame and a second support frame rotatably connected to the first support frame, the motor is connected to the first support frame, and the battery is connected to the second support frame.

[0015] In one embodiment, one end of the first support frame facing the second support frame is provided with a rotating shaft perpendicular to the extension direction of the first support frame, and one end of the second support frame facing the first support frame is provided with a hook hooked on the rotating shaft, and the hook is rotatably connected to the rotating shaft.

[0016] In one embodiment, the abutment member is annular and is sleeved on the output shaft. The pressure control mechanism includes a pressure sensor arranged on the output shaft and a conductive spring connected to the pressure sensor and connected to the control circuit board. The pressure sensor is electrically connected to the control circuit board through the conductive spring.

[0017] In one embodiment, the driving mechanism further includes a connecting member for connecting the abutting member and the motor, the connecting member is provided with a through hole, and the output shaft is passed through the through hole.

[0018] The technical effect of the present invention relative to the prior art is as follows: the present invention sets a pressure control mechanism that conflicts with the shell, so that when the user does not put the toothbrush head into the oral cavity, that is, when there is no external force, the pressure value sensed by the pressure control mechanism is equal to or greater than the preset value. At this time, the driving mechanism is in the off state, and the toothbrush head does not vibrate. When the user inserts the toothbrush head into the oral cavity, the bristles can be pressed on the teeth along the extension direction thereof. At this time, the teeth exert a force on the toothbrush head in the opposite direction to the working direction. Driven by this force, the driving mechanism moves in the opposite direction to the working direction, and the pressure of the cavity wall of the accommodating cavity on the driving mechanism is reduced, that is, the pressure value sensed by the pressure control mechanism is reduced. When the pressure value is less than the preset value, the driving mechanism switches from the off state to the on state, that is, the toothbrush head starts to vibrate, and the user is able to brush his teeth with an electric toothbrush. The present invention automatically turns on or off the driving mechanism by sensing the pressure applied by the user to the toothbrush head through a pressure control mechanism, so that the toothbrush head can perform normal vibration cleaning when pressed on the teeth. The user's force on the teeth can also increase the friction of the toothbrush head on the teeth to further enhance the cleaning effect. After the toothbrush head is removed from the oral cavity, the external force is removed, so the pressure value sensed by the pressure control mechanism is restored to a preset value or restored to a value greater than the preset value. At this time, the driving mechanism is in a shutdown state, and the electric toothbrush no longer vibrates. In this way, the user can realize the switch operation of the electric toothbrush through the necessary actions when brushing teeth, without having to operate buttons or push buttons. The operation is more intelligent and convenient, and the sense of technology and user experience is enhanced. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments of the present invention or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 is a three-dimensional structural diagram of an electric toothbrush provided in Embodiment 1 of the present invention;

[0021] Figure 2 is a partial exploded view of the electric toothbrush provided in the first embodiment of the present invention;

[0022] Figure 3 is an overall exploded view of the electric toothbrush provided in the first embodiment of the present invention;

[0023] Figure 4 is a partial exploded view of the electric toothbrush provided in the second embodiment of the present invention;

[0024] Figure 5 is an overall exploded view of the electric toothbrush provided in the second embodiment of the present invention;

[0025] Figure 6 It is a cross-sectional view of an electric toothbrush provided in Embodiment 2 of the present invention.

[0026] Description of reference numerals:

[0027] 10. Toothbrush head; 11. Brush rod; 12. Bristles; 21. Shell; 210. Accommodating cavity; 211. Abutment member; 212. Hand piece; 22. Driving mechanism; 221. Motor; 222. Output shaft; 223. Control circuit board; 224. Battery; 225. Weight block; 23. Pressure control mechanism; 231. Pressure sensor; 232. Conductive spring; 24. Indicator light; 251. First support frame; 2511. Rotating shaft; 252. Second support frame; 2521. Hook; 253. Third support frame; 26. Charging stand; 27. Waterproof rubber plug; 28. Connector DETAILED DESCRIPTION

[0028] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0029] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention 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 cannot be understood as a limitation on the present invention.

[0030] In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first", "second", and "third" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0031] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0033] Embodiment 1

[0034] An embodiment of the present invention provides an electric toothbrush, including a toothbrush head 10 and a handle connected to the toothbrush head 10 .

[0035] Please refer to Figure 1 The toothbrush head 10 includes a brush rod 11 and bristles 12 connected to the brush rod 11 and extending toward the working direction. Figure 2 The handle includes a housing 21, a driving mechanism 22, a pressure control mechanism 23, an indicator light 24, a support assembly and a charging stand 26. The operating direction is a direction perpendicular to the extension direction of the brush rod 11.

[0036] Please refer to Figure 2 The shell 21 includes a hand piece 212 and an abutment piece 211. The hand piece 212 is cylindrical. The hand piece 212 is connected to the toothbrush head 10 and has a accommodating cavity 210. The abutment piece 211 is arranged on the cavity wall of the accommodating cavity 210 that is opposite to the working direction and extends opposite to the working direction.

[0037] The driving mechanism 22 is disposed in the accommodating cavity 210 and connected to the toothbrush head 10 . The driving mechanism 22 is used to drive the toothbrush head 10 to vibrate.

[0038] Please refer to Figure 3 The pressure control mechanism 23 is arranged on the driving mechanism 22 and is electrically connected to the driving mechanism 22. The abutment member 211 is detachably connected to the cavity wall of the accommodating cavity 210 which is opposite to the working direction. The pressure control mechanism 23 abuts against the abutment member 211 and is used to sense the pressure applied by the abutment member 211 to the driving mechanism 22.

[0039] The driving mechanism 22 has an on state of continuous vibration and an off state of stopping vibration. The driving mechanism 22 can be in the off state when the pressure value sensed by the pressure control mechanism 23 is equal to or greater than the preset value, and can also be switched to the on state when the pressure value sensed by the pressure control mechanism 23 is less than the preset value. The preset value is the value of the force that the user needs to apply to the toothbrush head 10 when brushing teeth, as obtained through experiments.

[0040] The present invention sets a pressure control mechanism 23 that conflicts with the shell 21, so that when the user does not put the toothbrush head 10 into the oral cavity, that is, when there is no external force, the pressure value sensed by the pressure control mechanism 23 is equal to or greater than the preset value. At this time, the driving mechanism 22 is in the off state, and the toothbrush head 10 does not vibrate. When the user inserts the toothbrush head 10 into the oral cavity, the bristles 12 can be pressed against the teeth along their extension direction. At this time, the teeth exert a force on the toothbrush head 10 in the opposite direction of the working direction. Driven by this force, the driving mechanism 22 moves in the opposite direction of the working direction, and the pressure of the cavity wall of the accommodating cavity 210 on the driving mechanism 22 is reduced, that is, the pressure value sensed by the pressure control mechanism 23 is reduced. When the pressure value is less than the preset value, the driving mechanism 22 is switched from the off state to the on state, that is, the toothbrush head 10 starts to vibrate, and the user can brush his teeth with the electric toothbrush. The present invention automatically turns on or off the drive mechanism 22 by sensing the pressure applied by the user to the toothbrush head 10 through the pressure control mechanism 23, so that the toothbrush head 10 can perform normal vibration cleaning when pressed on the teeth. The user's force on the teeth can also increase the friction of the toothbrush head 10 on the teeth to further enhance the cleaning effect. After the toothbrush head 10 is removed from the oral cavity, the pressure value sensed by the pressure control mechanism 23 is restored to a preset value or restored to a value greater than the preset value. At this time, the drive mechanism 22 is in the off state, and the electric toothbrush no longer vibrates. In this way, the user can realize the switch operation of the electric toothbrush through the necessary actions when brushing teeth, without having to operate buttons or push buttons. The operation is more intelligent and convenient, and the sense of technology and user experience is enhanced.

[0041] In one embodiment, the abutment member 211 is an elastic member to prevent instantaneous collision with the pressure control mechanism 23. The abutment member 211 always abuts against the pressure control mechanism 23 during the vibration of the driving mechanism 22, so that the abutment member 211 will not separate from the pressure control mechanism 23 during the vibration of the driving mechanism 22, thereby preventing the abutment member 211 from causing wear to the pressure control mechanism 23. In this embodiment, the abutment member 322 is made of rubber or a spring.

[0042] In this embodiment, please refer to Figure 2 and Figure 3 The abutment member 211 is annular and is sleeved on the driving mechanism 22 so that the abutment member 211 can always abut against the pressure control mechanism 23 through its own elastic force. After the driving mechanism 22 finishes vibrating, the abutment member 211 can also reset the driving mechanism 22 through its own elastic force, so that the pressure control mechanism 23 can be reset.

[0043] For details, please refer to Figure 2 and Figure 3The driving mechanism 22 includes a supporting assembly, a motor 221 disposed in the accommodating cavity 210, an output shaft 222 connected to the output end of the motor 221, a control circuit board 223 connected to the motor 221 and used to control the motor 221, a battery 224 connected to the motor 221 and electrically connected to the motor 221, and a weight block 225 connected to the supporting assembly. The output shaft 222 is connected to the toothbrush head 10. The motor 221 drives the toothbrush head 10 to vibrate by vibrating the output shaft 222. The pressure control mechanism 23 is disposed on the side of the control circuit board 223 facing the working direction and is electrically connected to the control circuit board 223. The control circuit board 223 can receive the pressure value sensed by the pressure control mechanism 23 and control the motor 221 to switch the vibration state. The battery 224 is used to power the electronic devices such as the motor 221. The charging stand 26 is connected to the end of the housing 21 facing away from the toothbrush head 10 and is electrically connected to the battery 224. The charging stand 26 charges the battery 224 by being electrically connected to an external power source. The charging seat 26 has a charging socket opened toward the extension direction of the shell 21. When charging is needed, the external power source is plugged into the charging socket to achieve electrical connection between the external power source and the battery 224.

[0044] Please refer to Figure 2 and Figure 3 , the driving mechanism 22 is connected to the housing 21 through a bracket assembly, and the support assembly provides a mounting position for the driving mechanism 22. Specifically, the bracket assembly includes a first support frame 251 and a second support frame 252 rotatably connected to the first support frame 251, the motor 221 is connected to the first bracket, the battery 224 is connected to the motor 221 through the second support frame 252, one end of the first support frame 251 facing the toothbrush head 10 and one end of the second support frame 252 facing away from the toothbrush head 10 are connected to the housing 21, and one end of the first support frame 251 facing away from the toothbrush head 10 and one end of the second support frame 252 facing the toothbrush head 10 are freely suspended, so that the motor 221 can swing freely within a certain range when vibrating, thereby increasing the swing amplitude of the motor 221, and also increasing the swing amplitude of the toothbrush head 10 driven by the motor 221, thereby expanding the cleaning range of the toothbrush head 10 and enhancing the cleaning effect on the teeth.

[0045] Please refer to Figure 2 and Figure 3 Specifically, one end of the first support frame 251 facing the second support frame 252 is provided with a rotating shaft 2511 perpendicular to the extension direction of the first support frame 251, and one end of the second support frame 252 facing the first support frame 251 is provided with a hook 2521 hooked on the rotating shaft 2511, and the hook 2521 is rotatably connected to the rotating shaft 2511. In this way, during installation, the second support frame 252 can be directly hung on the rotating shaft 2511 to achieve a rotatable connection with the first support frame 251, which is convenient and quick.

[0046] Please refer to Figure 2 and Figure 3 In order to effectively fix the motor 221 and prevent the motor 221 from falling off the first support frame 251, the support assembly also includes a third support frame 253 connected to the first support frame 251, and the first support frame 251 and the third support frame 253 jointly clamp the motor 221. The first support frame 251 and the third support frame 253 are buckled and can be further abutted through the ring sleeve of the waterproof rubber plug 27, so that the first support frame 251 and the third support frame 253 can limit the position of the motor 221 in the circumferential direction to prevent the motor 221 from detaching from the support assembly during vibration. Among them, the waterproof rubber plug 27 is connected to the junction of the shell 21 and the toothbrush head 10 to prevent water from penetrating into the shell 21 from the junction of the shell 21 and the toothbrush head 10, affecting the normal use of the electronic devices in the shell 21.

[0047] Please refer to Figure 2 and Figure 3 In this embodiment, the weight block 225 is connected to the first support frame 251. The weight block 225 can increase the weight of the first support frame 251 to further enhance the inertia of the motor 221, thereby increasing the swing amplitude of the motor 221 and improving the cleaning effect of the toothbrush head 10.

[0048] In this embodiment, please refer to Figure 2 and Figure 3 The control circuit board 223 is also provided with an indicator light 24, which is provided on the housing 21 and electrically connected to the pressure control mechanism 23. The indicator light 24 can be activated when the pressure value of the pressure control mechanism 23 is less than the preset minimum value. The preset minimum value is less than the preset value. When the user presses the toothbrush head 10 onto the teeth with too much force, the toothbrush head 10 may be broken or the driving mechanism 22 may be damaged. The greater the force applied by the user to the toothbrush head 10, the smaller the pressure value sensed by the pressure control mechanism 23. When the pressure value is less than the preset minimum value, it means that the user has applied too much force to the toothbrush head 10. At this time, the indicator light 24 is activated to send out a warning signal to remind the user to pay attention.

[0049] Embodiment 2

[0050] The second embodiment provides an electric toothbrush, which is different from the first embodiment in that: Figure 5 and Figure 6The abutment member 211 is sleeve-shaped and sleeved on the output shaft 222. The pressure control mechanism 23 includes a pressure sensor 231 disposed on the output shaft 222 and a conductive spring 232 connected to the pressure sensor 231 and connected to the control circuit board 223. The pressure sensor 231 is electrically connected to the control circuit board 223 through the conductive spring 232. The pressure sensor 231 is disposed on the side of the conductive spring 232 facing the output shaft 222. The conductive spring 232 is elastic to avoid breaking during the vibration of the output shaft 222. The conductive spring 232 is located between the abutment member 211 and the output shaft 222 and on the side of the output shaft 222 facing the working direction. Due to the elastic effect of the abutment member 211, it always abuts against the output shaft 222. When the user presses the bristles 12 in the working direction, the toothbrush head 10 is subjected to a force in the opposite working direction. At this time, the output shaft 222 moves in the opposite working direction driven by the toothbrush head 10. At this time, the pressure value of the output shaft 222 on the pressure sensor 231 decreases. When the pressure value decreases to less than the preset value, the drive mechanism 22 switches from the closed state to the started state. When no force is applied to the toothbrush head 10, under the elastic action of the abutment 211, the pressure of the output shaft 222 on the pressure sensor 231 is greater than or equal to the preset value. At this time, the drive mechanism 22 switches from the on state to the off state. In this way, the user can intelligently turn on or off the electric toothbrush without pressing a button in a specific area, which improves the sense of technology of the electric toothbrush.

[0051] Please refer to Figure 4 The abutment member 211 can be used as a waterproof rubber plug connected to the joint between the shell 21 and the toothbrush head 10 to prevent water from penetrating into the shell 21 from the joint between the shell 21 and the toothbrush head 10 and affecting the normal use of the electronic components in the shell 21.

[0052] Please refer to Figure 5 and Figure 6 In order to increase the amplitude of the toothbrush head 10, the driving mechanism 22 also includes a connecting member 28 for connecting the abutment member 211 and the motor 221. The connecting member 28 is shaped like a cover and is arranged on the motor 221 to fix the motor 221 to the support assembly. The connecting member 28 is provided with a through hole extending in the same direction as the output shaft 222. The output shaft 222 is passed through the through hole. In this way, the distance between the motor 221 and the toothbrush head 10 is increased to increase the swing amplitude of the electric toothbrush and improve the vibration effect. The motor 221 can also be stably fixed to prevent the motor 221 from axial movement. Among them, the side wall of the connecting member 28 is provided with a through-hole, so that the conductive spring 232 can pass through the through hole and the avoidance hole to the space between the abutment member 211 and the output shaft 222 in sequence.

[0053] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An electric toothbrush, characterized in that: The invention comprises a toothbrush head and a handle connected to the toothbrush head, wherein the toothbrush head comprises a brush rod and bristles connected to the brush rod and extending toward a working direction, and the handle comprises: A shell connected to the toothbrush head and having a receiving cavity; A driving mechanism, located in the accommodating cavity and connected to the toothbrush head, the driving mechanism being capable of driving the toothbrush head to vibrate; a pressure control mechanism, disposed on the driving mechanism and electrically connected to the driving mechanism, the pressure control mechanism being in contact with a cavity wall of the accommodating cavity facing away from the operation direction and being used to sense the pressure exerted by the cavity wall of the accommodating cavity on the driving mechanism; The driving mechanism has an on state of continuous vibration and an off state of stopping vibration. The driving mechanism can be in the off state when the pressure value sensed by the pressure control mechanism is equal to or greater than a preset value, and can also be in the on state when the pressure value sensed by the pressure control mechanism is less than the preset value. The housing comprises a hand piece and an abutment piece, the hand piece has the accommodating cavity, the abutment piece is detachably connected to a cavity wall of the accommodating cavity facing away from the working direction, the pressure control mechanism abuts against the abutment piece and is used to sense the pressure applied by the abutment piece to the driving mechanism; The abutment member is an elastic member and is always in abutment with the pressure control mechanism during the vibration of the driving mechanism.

2. The electric toothbrush according to claim 1, characterized in that The driving mechanism includes a motor, an output shaft connected to the output end of the motor, and a control circuit board electrically connected to the motor. The control circuit board is electrically connected to the motor, the pressure control mechanism is electrically connected to the control circuit board, the output shaft is connected to the toothbrush head, and the motor can drive the toothbrush head to vibrate by driving the output shaft to vibrate.

3. The electric toothbrush according to claim 2, characterized in that The abutment member is annular and sleeved on the motor and the control circuit board. The pressure sensor is clamped between the side surface of the control circuit board facing the working direction and the inner annular surface of the abutment member facing away from the working direction.

4. The electric toothbrush according to claim 3, characterized in that The driving mechanism further comprises a bracket assembly connected to the shell and a battery connected to the bracket assembly. The motor and the control circuit board are both connected to the bracket assembly.

5. The electric toothbrush according to claim 4, characterized in that The support assembly includes a first support frame and a second support frame rotatably connected to the first support frame, the motor is connected to the first support frame, and the battery is connected to the second support frame.

6. The electric toothbrush according to claim 5, characterized in that One end of the first support frame facing the second support frame is provided with a rotating shaft perpendicular to the extension direction of the first support frame, and one end of the second support frame facing the first support frame is provided with a hook hooked on the rotating shaft, and the hook is rotatably connected to the rotating shaft.

7. The electric toothbrush according to claim 2, characterized in that: The abutment member is annular and is sleeved on the output shaft. The pressure control mechanism includes a pressure sensor arranged on the output shaft and a conductive spring connected to the pressure sensor and connected to the control circuit board. The pressure sensor is electrically connected to the control circuit board through the conductive spring.

8. The electric toothbrush according to claim 7, characterized in that The driving mechanism further comprises a connecting piece for connecting the abutting piece and the motor, the connecting piece is provided with a through hole, and the output shaft is passed through the through hole.

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