An electric toothbrush with force control adjustment by the toothbrush head

Abstract

The application discloses a kind of electric toothbrushes by toothbrush head stress control adjustment, it includes: toothbrush handle and toothbrush head, toothbrush handle is provided with support frame, it is installed in support frame in swingable mode and is used to drive the drive device of toothbrush head vibration, circuit board for controlling drive device is installed on support frame and is used to provide the battery of electric energy, the swing end of drive device is provided with swing support, first sensing device is provided on circuit board with the side clearance of swing support is separated, first reset device is arranged between circuit board and swing support this side.The application is triggered by first sensing device according to the swing of swing support to drive toothbrush head stress to drive device work, and first reset device is arranged between swing support and circuit board and pushes swing support reset, to realize toothbrush head is started by extrusion force, immediately stop when loosening, ensure that toothbrush head work can be controlled at any time, to realize entry immediately open, and stop away from mouth.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of electric toothbrushes, in particular to an electric toothbrush with force-controlled adjustment of the brush head. BACKGROUND

[0002] An electric toothbrush is a device that uses the rapid rotation or vibration of an electric motor to produce high-frequency vibrations in the brush head, instantly breaking down toothpaste into fine foam and deeply cleaning the gaps between teeth. At the same time, the vibration of the bristles can promote blood circulation in the mouth and have a massage effect on the gum tissue.

[0003] Electric toothbrushes are divided into two categories based on their principles: rotation and vibration. The principle of a rotating toothbrush is simple: an electric motor drives a circular brush head to rotate, enhancing the friction effect while performing the normal brushing action. Rotating toothbrushes have a strong force and can clean the teeth very well, but the cleaning of the gaps between teeth is relatively weak, and they can cause significant wear and tear on the teeth, so they are not recommended for long-term use. Vibration-type toothbrushes are more complex. They have an electrically driven vibration motor inside that can produce high-frequency oscillations perpendicular to the direction of the handle, but the amplitude of the oscillations is very small, typically around 5 mm up and down, with the largest amplitude in the industry being 6 mm. When brushing, the high-frequency oscillating brush head can efficiently complete the action of cleaning the teeth, and the more than 30,000 vibrations per minute also create a large number of tiny bubbles in the mixture of toothpaste and water in the mouth. The pressure generated by the bursting of these bubbles can clean the dirt in the gaps between teeth.

[0004] Current electric toothbrushes on the market are generally controlled by buttons on the handle. They require the user to set the brushing mode before brushing and press the button to control the toothbrush while brushing. Although different brushing modes have different vibration intensities, the brushing time for each mode is fixed and cannot be stopped in the middle. When the user needs to stop or extend the brushing time, they must start again with the same amount of time, and cannot control the start of the toothbrush at will. This means that the toothbrush cannot be turned on as soon as the user puts it in their mouth and turned off as soon as they take it out.

[0005] In view of the above, the present application provides the following technical solutions. SUMMARY

[0006] The present application aims to overcome the shortcomings of the prior art and provide an electric toothbrush with force-controlled adjustment of the brush head.

[0007] In order to solve the above technical problems, the application adopts the following technical scheme: the electric toothbrush controlled by the force of the toothbrush head, comprising: a toothbrush handle and a toothbrush head, the toothbrush handle is provided with a support frame, a driving device for driving the toothbrush head to vibrate is installed in the support frame in a swingable manner, a circuit board for controlling the driving device is installed on the support frame, and a battery for providing electric energy is provided, the swing end of the driving device is provided with a swing support, the circuit board is provided with a first sensing device spaced apart from one side of the swing support, and a first reset device is arranged between the circuit board and the swing support.

[0008] Further, in the above technical scheme, the other side of the swing support is provided with a third sensing device and a fourth sensing device spaced apart, the third sensing device and the fourth sensing device are electrically connected with the circuit board through a key plate, and the third sensing device and the fourth sensing device are distributed side by side along the long side of the toothbrush handle, and a second reset device is arranged between the key plate and the swing support.

[0009] Further, in the above technical scheme, the first and second elastic conductive sheets are symmetrically arranged on both sides of the swing support, wherein the first elastic conductive sheet corresponds to the first and second sensing devices and is spaced apart from each other, and the second elastic conductive sheet corresponds to the third and fourth sensing devices and is spaced apart from each other.

[0010] Further, in the above technical scheme, the first and second sensing devices and the third and fourth sensing devices are pressure sensing probes or pressure sensitive resistors or touch keys.

[0011] Further, in the above technical scheme, the first and second sensing devices and the third and fourth sensing devices are conductive needles, and the first and second elastic conductive sheets are connected with the electrodes of the driving device, and the swing support is an insulating piece.

[0012] Further, in the above technical scheme, the first and second reset devices are both tower springs, the swing support is symmetrically formed with a first positioning convex part and a second positioning convex part for positioning the first and second reset devices respectively, the circuit board and the key plate are respectively provided with a first mounting hole and a second mounting hole for mounting the first and second reset devices, and the bottom ends of the first and second reset devices are respectively bent to form a first U-shaped buckle part and a second U-shaped buckle part for being inserted into the first and second mounting holes.

[0013] Further, in the technical scheme, the lower end of the driving device is provided with a convex bottom cover for mounting the swing bracket, the swing bracket is sleeved on the convex bottom cover, the lower end of the swing bracket is provided with a mounting seat for mounting and positioning the support frame, the mounting seat and the swing bracket are connected through first and second elastic arms and are formed with a through hole for the wire harness to pass through, and the wire harness connects the key plate and the circuit board.

[0014] Further, in the technical scheme, the outer wall of the toothbrush handle is mounted with a detachable and replaceable panel, and the panel is formed with an opening for the key to extend out.

[0015] Further, in the technical scheme, the toothbrush head comprises a brush head body, bristles mounted at one end of the brush head body, a clamping member mounted at the other end of the brush head body and connected with the driving device, and a silica gel sleeve sleeved on the brush head body, the clamping member is conical, the bottom of the clamping member is formed with an annular groove clamped with the inner wall of the brush head body, the clamping member is formed with a clamping hole for the driving shaft of the driving device to pass through, one side of the clamping hole is formed with an elastic clamping arm for clamping and fixing the driving shaft, and the silica gel sleeve is formed with a plurality of protrusions located at one side of the back of the bristles, and the bristles pass through the silica gel sleeve.

[0016] A control and adjustment method of an electric toothbrush,

[0017] In the first step, the toothbrush head senses the extrusion force;

[0018] In the second step, when one side of the bristles of the toothbrush head is subjected to the extrusion force, the driving device swings around the hinge to make the swing bracket contact the first sensing device to generate a start signal, the circuit board controls the electric toothbrush to start and work at the first preset gear;

[0019] In the third step, when the extrusion force on one side of the toothbrush head increases to the first preset value, a strong vibration mode signal is generated, and the circuit board controls the driving device to increase the vibration intensity and amplitude;

[0020] In the fourth step, when the extrusion force on the toothbrush head increases to greater than the second preset value, a protection signal is generated, the circuit board controls the driving device to temporarily stop, and then reduces the vibration intensity and amplitude;

[0021] In the fifth step, when the extrusion force on the toothbrush head decreases to less than the first preset value, the circuit board controls the driving device to return to the first preset gear;

[0022] In the sixth step, when the extrusion force on the toothbrush head decreases to zero, the first reset device resets the driving device, the first elastic conductive sheet is separated from the first sensing device, and the circuit board controls the toothbrush to be on standby or to be turned off.

[0023] Seventh step, when the bristle back of the toothbrush head is pressed, the driving device swings around the hinge, the swing bracket contacts the third sensing device, a standby signal is generated, the electric toothbrush enters the wake-up state, and a gear shifting signal is output, the circuit board controls the electric toothbrush to switch the brushing mode and start for a short time at the current gear.

[0024] After the above technical scheme, the present application has the following beneficial effects compared with the prior art: in the present application, the driving device is installed in the toothbrush handle in a swingable manner, the first sensing device is arranged on the side of the swing end of the driving device, and the swing bracket corresponding to the first sensing device is arranged on the swing end of the driving device, the swing bracket is swung by the first sensing device according to the force of the toothbrush head to trigger the driving device to work, and the first reset device is arranged between the swing bracket and the circuit board to push the swing bracket to reset, so that the toothbrush head is started by the pressing force and stopped immediately when the pressing force is released, ensuring that the toothbrush head can work at any time, and realizing that the toothbrush head is started when the mouth is opened and stopped when the mouth is closed. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is a perspective view of the present application;

[0026] Figure 2 is a rear view of the present application in use;

[0027] Figure 3 is Figure 2 a sectional view of A-A in the present application;

[0028] Figure 4 is Figure 3 a local enlarged view of B in the present application;

[0029] Figure 5 is an exploded view of the toothbrush handle in the present utility model Figure 1 ;

[0030] Figure 6 is an exploded view of the toothbrush handle in the present utility model Figure 2 ;

[0031] Figure 7 is a perspective view of the brush head body in the present utility model;

[0032] Figure 8 is a perspective view of the clamping member in the present utility model;

[0033] Figure 9 is a perspective view of the silica gel sleeve in the present utility model;

[0034] Figure 10 is a control principle diagram of the present application;

[0035] Figure 11 is a circuit diagram of the present application.

[0036] Explanation of reference signs:

[0037] 1 toothbrush handle 12 panel 13 light-transmitting hole 131 light-transmitting sealing waterproof part 2 toothbrush head 21 brush head body 210 cavity 211 convex ring 212 first positioning groove 213 second positioning groove 214 first positioning protrusion 215 second positioning protrusion 216 third positioning protrusion 217 second protrusion 22 bristles 23 buckle 231 ring groove 232 clamping hole 233 elastic clamping arm 234 first protrusion 235 first rib 236 second rib 237 third rib 238 clamping protrusion 24 silica gel sleeve 241 first protrusion 242 positioning hole 3 support frame 4 driving device 41 convex bottom cover 42 driving shaft 43 EVA gasket 44 shell 5 circuit board 50 battery 501 first mounting hole 502 second mounting hole 51 first sensing device 52 second sensing device 53 third sensing device 54 fourth sensing device 55 key plate 56 wire harness 58 indicator light 581 EVA light shielding part 6 swing support 61 first positioning protrusion 62 second positioning protrusion 63 mounting seat 66 through hole 71 first reset device 711 first U-shaped clamping part 72 second reset device 721 second U-shaped clamping part 73 first elastic conduction sheet 74 second elastic conduction sheet DETAILED DESCRIPTION

[0038] The application will be further described below in connection with specific embodiments and drawings.

[0039] See Figures 1 to 11 As shown in the figure, it is an electric toothbrush with force control adjustment, which comprises a toothbrush handle 1 and a toothbrush head 2, the toothbrush handle 1 is provided with a support frame 3, a driving device 4 is installed in the support frame 3 in a swingable manner and used to drive the toothbrush head 2 to vibrate, a circuit board 5 is installed on the support frame 3 and used to control the driving device 4, and a battery 50 is used to provide electric energy, the swing end of the driving device 4 is provided with a swing bracket 6, the circuit board 5 is provided with a first sensing device 51 which is spaced apart from one side of the swing bracket 6 by a gap, and a first reset device 71 is arranged between the circuit board 5 and the side of the swing bracket 6. By installing the driving device 4 in the toothbrush handle 1 in a swingable manner, arranging the first sensing device 51 on the side of the swing end of the driving device 4, and arranging the swing bracket 6 corresponding to the first sensing device 51 on the swing end of the driving device 4, the swing bracket 6 is driven to swing by the first sensing device 51 according to the force of the toothbrush head 2 to trigger the driving device 4 to work, and the first reset device 71 is arranged between the swing bracket 6 and the circuit board 5 to push the swing bracket 6 to reset, so as to realize that the toothbrush head 2 is started by extrusion force and stopped immediately after being released, which ensures that the toothbrush head 2 can work at any time, and then realizes that it is started immediately after being opened and stopped immediately after being closed. Secondly, the total time of single work of the driving device 4 can be controlled by the circuit board 5, so as to ensure that the toothbrushing time is not less than two minutes each time.

[0040] The circuit board 5 is also provided with a second sensing device 52 which is spaced apart from the swing bracket 6 by a gap, and the second sensing device 52 and the first sensing device 51 are distributed longitudinally along the long side of the toothbrush handle 1.

[0041] The third sensing device 53 and the fourth sensing device 54 are arranged on the other side of the swing bracket 6 and are separated by a gap, and the third sensing device 53 and the fourth sensing device 54 are electrically connected to the circuit board 5 through a key plate 55, and the third sensing device 53 and the fourth sensing device 54 are distributed side by side along the long side of the toothbrush handle 1, and the second reset device 72 is arranged between the key plate 55 and the swing bracket 6. In an embodiment, by arranging the third sensing device 53 and the fourth sensing device 54 on the symmetric side of the first sensing device 51, the third sensing device 53 and the fourth sensing device 54 are used to switch the working mode of the electric toothbrush when the toothbrush head 2 is reversely pressed, thereby realizing the keyless operation switching mode, and the default mode of the electric toothbrush includes the milk tooth mode, the tooth replacement mode and the permanent tooth mode.

[0042] The first elastic conducting sheet 73 and the second elastic conducting sheet 74 are symmetrically arranged on both sides of the swing bracket 6, wherein the first elastic conducting sheet 73 corresponds to the first sensing device 51 and the second sensing device 52 and is separated by a gap, and the second elastic conducting sheet 74 corresponds to the third sensing device 53 and the fourth sensing device 54 and is separated by a gap.

[0043] The first reset device 71 and the second reset device 72 are both tower springs, the swing bracket 6 is symmetrically formed with a first positioning protrusion 61 and a second positioning protrusion 62 for positioning the first reset device 71 and the second reset device 72 respectively, and the circuit board 5 and the key plate 55 are respectively provided with a first mounting hole 501 and a second mounting hole 502 for mounting the first reset device 71 and the second reset device 72, and the bottom ends of the first reset device 71 and the second reset device 72 are respectively bent to form a first U-shaped buckle 711 and a second U-shaped buckle 721 for inserting into the first mounting hole 501 and the second mounting hole 502.

[0044] The driving device 4 is provided with a convex bottom cover 41 for mounting the swing bracket 6, the swing bracket 6 is sleeved on the convex bottom cover 41, and the swing bracket 6 is provided with a mounting seat 63 for mounting and positioning the support frame 3, the mounting seat 63 and the swing bracket 6 are connected through first elastic arms and second elastic arms and are formed with through holes 66 for the wire harness 56 to pass through, and the wire harness 56 connects the key plate 55 and the circuit board 5. The mounting seat 63 is formed with a positioning protrusion for clamping into the support frame 3, one end of the first elastic arm and the second elastic arm is fixed on both sides of the mounting seat 63 respectively, and the other end of the first elastic arm and the second elastic arm is fixed on the upper end of the swing bracket 6 and is arranged in a diagonal distribution.

[0045] The outer wall of the toothbrush handle 1 is provided with a detachable and replaceable panel 12, which is formed with an opening for the key 11 to extend out.

[0046] The toothbrush head 2 comprises a brush head body 21, bristles 22 mounted at one end of the brush head body 21, a clamping member 23 mounted at the other end of the brush head body 21 and connected with the driving device 4, and a silica gel sleeve 24 sleeved on the brush head body 21. The clamping member 23 is tapered, and the bottom thereof is formed with an annular groove 231 clamped with the inner wall of the brush head body 21. The clamping member 23 is formed with a clamping hole 232 for the driving shaft 42 of the driving device 4 to pass through, and one side of the clamping hole 232 is formed with an elastic clamping arm 233 clamping and fixing the driving shaft 42. The silica gel sleeve 24 is formed with a plurality of first protrusions 241, which are located at one side of the back of the bristles 22, and the bristles 22 pass through the silica gel sleeve 24. The first protrusions 241 are distributed longitudinally along the brush head body 21 and are in a gully shape, and are not of equal height.

[0047] The lower end of the brush head body 21 is formed with a horn-shaped cavity 210, and the lower end of the cavity 210 is formed with a convex ring 211 matched with the annular groove 231. The inner wall of the cavity 210 is further formed with a first positioning groove 212 and a second positioning groove 213 and a first positioning protrusion 214 and a second positioning protrusion 215 for positioning the clamping member 23. The outer wall of the brush head body 21 is further formed with a third positioning protrusion 216 for positioning the silica gel sleeve 24, which is located in the middle of the first protrusion 241 and is lower than the height of the first protrusion 241. The middle of the first protrusion 241 is formed with a positioning hole 242 matched with the third positioning protrusion 216. The upper end of the clamping member 23 is formed with a first protrusion 234 matched with the first positioning groove 212 for positioning. The side wall of the clamping member 23 is formed with a first rib 235 matched with the second positioning groove 213 for positioning, which is located on the symmetrical side of the elastic clamping arm 233. The side wall of the clamping member 23 is further formed with a second rib 236 and a third rib 237 parallel to the first rib 235 and in contact with the first positioning protrusion 214 and the second positioning protrusion 215 for positioning. The first rib 235, the second rib 236 and the third rib 237 are all formed with a clamping protrusion 238 abutting and clamping with the cavity 210. The lower end of the second positioning groove 213 is formed with a second protrusion 217 matched with the clamping protrusion 238 for clamping.

[0048] A indicating lamp 58 is arranged below the control switch, and a light-transmitting hole 13 corresponding to the indicating lamp 58 is formed on the toothbrush handle 1, and a light-transmitting sealing waterproof member 131 is mounted on the light-transmitting hole 13. An EVA light-shielding member 581 is sleeved on the indicating lamp 58.

[0049] See Figure 10 The circuit board 5 comprises a master control circuit module 81, a charging circuit module 82, a protection circuit module 83, an indicator light circuit module 84, a driving circuit module 85 and a switch circuit module 86.

[0050] The driving device 4 is externally covered by a shell 44, one end of which is hingedly mounted with the support frame 3, and one side of which is provided with an EVA pad 43 between the inner wall of the toothbrush handle 1; the circuit board 5 is installed on one side of the support frame 3, the driving device 4 is installed on the upper part of the support frame 3, the battery 50 is installed on the lower part of the support frame 3, and the key plate 55 is installed on the other side of the support frame 3 between the driving device 4 and the battery 50. The driving device 4 is a motor.

[0051] See Figure 10 In the first embodiment, the first sensing device 51 and the second sensing device 52 and the third sensing device 53 and the fourth sensing device 54 are pressure sensing probes or pressure sensitive resistors or touch keys. A fifth sensing device is also provided below the second sensing device 52, which is arranged in line with the first sensing device 51 and the second sensing device 52. The working principle of this embodiment is as follows: when the toothbrush head 2 is subjected to a squeezing force, the toothbrush head 2 will slightly sway to one side and pry the driving device 4 to sway in the opposite direction. When the toothbrush head 2 is subjected to a squeezing force on one side of the bristles 22, the driving device 4 drives the swinging bracket 6 to move towards the first sensing device 51, and after the first sensing device 51 contacts the first elastic conductive piece 73, an opening signal is generated, and the circuit board 5 controls the electric toothbrush to start. When the squeezing force on the toothbrush head 2 is greater than the first preset value, the second sensing device 51 contacts the first elastic conductive piece 73, triggering the driving device 4 to increase the vibration intensity. When the squeezing force on the toothbrush head 2 is greater than the second preset value, the fifth sensing device contacts the first elastic conductive piece 73, triggering the driving device 4 to temporarily stop and reduce the vibration amplitude. When the squeezing force on the toothbrush head 2 decreases to less than the first preset value, the driving device 4 returns to the first preset gear. Finally, when the squeezing force on the toothbrush head 2 decreases to zero, the first reset device 71 resets the driving device 4, and the first elastic conductive piece 74 is disconnected from the first sensing device 51, and the electric toothbrush is turned off or returns to standby state. Therefore, when the squeezing force on the toothbrush head 2 is too large, the driving device 4 will reduce the vibration intensity to protect the teeth from being damaged. When the squeezing force on the toothbrush head 2 is on the back of the bristles 22, the driving device 4 drives the swinging bracket 4 to move towards the third sensing device 53, and after the third sensing device 53 contacts the second elastic conductive piece 74, a standby signal is generated, the electric toothbrush enters the wake-up state, and a gear shifting signal is output, the circuit board 5 controls the electric toothbrush to switch mode and start in the current gear for a short time, thereby realizing the switching of different modes.

[0052] In the second embodiment, the first sensing device 51 and the second sensing device 52 and the third sensing device 53 and the fourth sensing device 54 are conductive needles, the first elastic conducting sheet 73 and the second elastic conducting sheet 74 are connected with the electrode of the driving device 4, and the swing bracket 6 is an insulating piece. The fourth sensing device 54 is provided with two in parallel. The working principle of this embodiment is as follows: when the toothbrush head 2 senses the front pressing force, the first elastic conducting sheet 73 is in contact with the first sensing device 51 to conduct, a start signal is generated, and the circuit board 5 controls the electric toothbrush to start. When the front pressing force is greater than the first threshold value, the first elastic conducting sheet 73 is in contact with the second sensing device 52 to conduct, a strong vibration mode signal is generated, and the circuit board 5 controls the electric toothbrush to increase the vibration intensity or amplitude. When the toothbrush head 2 senses that the front pressing force is zero, the first reset device 71 resets the driving device 4, the first elastic conducting sheet 73 is separated from the first sensing device 51, a standby or shutdown signal is generated, and the circuit board 5 controls the electric toothbrush to standby or shutdown. When the toothbrush head 2 senses the back pressing force, the second elastic conducting sheet 74 is in contact with the third sensing device 53 to conduct, a standby signal is generated, the electric toothbrush enters the wake-up state and outputs a gear shifting signal, and the circuit board 5 controls the electric toothbrush to switch the working mode and start for a short time at the current gear. This control method can realize the functions of automatic wake-up and automatic start of the electric toothbrush without key, start as soon as the entrance, stop as soon as the exit, and intelligent dynamic adjustment of the vibration intensity of toothbrushing.

[0053] A control method of an electric toothbrush

[0054] Firstly, the toothbrush head 2 senses the pressing force.

[0055] Secondly, when one side of the bristles 22 of the toothbrush head 2 is pressed, the driving device 4 swings around the hinge to make the swing bracket 6 in contact with the first sensing device 51 to generate a start signal, the circuit board 5 controls the electric toothbrush to start, and the electric toothbrush starts to work at the first preset gear.

[0056] Thirdly, when the pressing force on one side of the bristles 22 of the toothbrush head 2 increases to the first preset value, a strong vibration mode signal is generated, and the circuit board 5 controls the driving device 4 to increase the vibration intensity and amplitude.

[0057] Fourthly, when the pressing force on the toothbrush head 2 increases to greater than the second preset value, a protection signal is generated, the circuit board 5 controls the driving device 4 to stop for a short time, and then reduces the vibration intensity and amplitude.

[0058] Fifthly, when the pressing force on the toothbrush head 2 decreases to less than the first preset value, the circuit board 5 controls the driving device 4 to return to the first preset gear.

[0059] The sixth step, when the pressure on the brush head 2 is reduced to zero, the first reset device 71 resets the drive device 4, the first elastic conductive sheet 73 is out of contact with the first sensing device 51, and the circuit board 5 controls the electric toothbrush to standby or shut down;

[0060] The seventh step, when the back of the brush head 2 is pressed, the drive device 4 swings around the hinge, the swing bracket 6 contacts the third sensing device 53, a standby signal is generated, the electric toothbrush enters the wake-up state, and a gear shifting signal is output, and the circuit board 5 controls the electric toothbrush to switch the brushing mode and start for a short time in the current gear.

[0061] Of course, the above only describes specific embodiments of the present application and is not intended to limit the scope of the present application. Any equivalent changes or modifications made to the structure, features and principles described in the patent application scope of the present application shall be included in the patent application scope of the present application.

Claims

1. An electrically powered toothbrush with force control adjustment by the toothbrush head, comprising: The toothbrush handle (1) and the toothbrush head (2) are characterized in that the toothbrush handle (1) is provided with a support frame (3), a driving device (4) installed in the support frame (3) in a swingable manner and used for driving the toothbrush head (2) to vibrate, a circuit board (5) installed on the support frame (3) and used for controlling the driving device (4), and a battery (50) used for providing electric energy, a swing support (6) is arranged at the swing end of the driving device (4), a first sensing device (51) is arranged on the circuit board (5) and spaced from one side of the swing support (6) by a gap, and a first reset device (71) is arranged between the circuit board (5) and the side of the swing support (6); a second sensing device (52) is also arranged on the circuit board (5) and spaced from the swing support (6) by a gap, and the first sensing device (51) and the second sensing device (52) are longitudinally and parallelly distributed along the long side of the toothbrush handle (1); the circuit board (5) comprises a main control circuit module (81), a charging circuit module (82), a protection circuit module (83), an indicator light circuit module (84), a driving circuit module (85), and a switching circuit module (86).

2. The electric toothbrush with force control adjustment through the toothbrush head according to claim 1, characterized in that: A third sensing device (53) and a fourth sensing device (54) are arranged on the other side of the swing support (6) and spaced by a gap, the third sensing device (53) and the fourth sensing device (54) are electrically connected to the circuit board (5) through a key plate (55), and the third sensing device (53) and the fourth sensing device (54) are parallelly distributed along the long side of the toothbrush handle (1), and a second reset device (72) is arranged between the key plate (55) and the swing support (6).

3. The electric toothbrush with force control adjustment through the toothbrush head according to claim 2, characterized in that: The swing support (6) is symmetrically provided with a first elastic conductive sheet (73) and a second elastic conductive sheet (74) on both sides, wherein the first elastic conductive sheet (73) corresponds to the first sensing device (51) and the second sensing device (52) and is spaced from each other by a gap, and the second elastic conductive sheet (74) corresponds to the third sensing device (53) and the fourth sensing device (54) and is spaced from each other by a gap.

4. The electric toothbrush with force control adjustment through the toothbrush head according to claim 3, characterized in that: The first sensing device (51), the second sensing device (52), the third sensing device (53), and the fourth sensing device (54) are pressure sensing probes, pressure sensitive resistors, or touch keys.

5. The electric toothbrush with force control adjustment through the toothbrush head according to claim 3, characterized in that: The first sensing device (51), the second sensing device (52), the third sensing device (53), and the fourth sensing device (54) are conductive needles, the first elastic conductive sheet (73) and the second elastic conductive sheet (74) are both connected to the electrode of the driving device (4), and the swing support (6) is an insulating piece.

6. The electric toothbrush with force control adjustment through the toothbrush head according to claim 3, characterized in that: The first reset device (71) and the second reset device (72) are both tower springs, the swing support (6) is symmetrically formed with a first positioning protrusion (61) and a second positioning protrusion (62) for positioning the first reset device (71) and the second reset device (72) respectively, the circuit board (5) and the key plate (55) are respectively provided with a first mounting hole (501) and a second mounting hole (502) for mounting the first reset device (71) and the second reset device (72), and the bottom ends of the first reset device (71) and the second reset device (72) are respectively bent to form a first U-shaped buckle portion (711) and a second U-shaped buckle portion (721) for being inserted into the first mounting hole (501) and the second mounting hole (502).

7. An electric toothbrush with force control adjustment of the toothbrush head according to any one of claims 2-6, characterized in that: The bottom end of the driving device (4) is provided with a convex bottom cover (41) for mounting the swing support (6), the swing support (6) is sleeved on the convex bottom cover (41), the bottom end of the swing support (6) is provided with a mounting seat (63) which is mounted and positioned with the support frame (3), the mounting seat (63) and the swing support (6) are connected through first and second elastic arms and are formed with a through hole (66) for the wire harness (56) to pass through, and the wire harness (56) connects the key plate (55) and the circuit board (5).

8. The electric toothbrush with force control adjustment through the toothbrush head according to claim 7, characterized in that: The outer wall of the toothbrush handle (1) is mounted with a detachable and replaceable panel (12), and the panel (12) is formed with an opening for the key (11) to extend out.

9. The electric toothbrush with force control adjustment through the toothbrush head according to claim 8, characterized in that: The toothbrush head (2) comprises a brush head body (21), bristles (22) mounted at one end of the brush head body (21), a clamping member (23) mounted at the other end of the brush head body (21) and connected with the driving device (4), and a silica gel sleeve (24) sleeved on the brush head body (21), the clamping member (23) is conical, the bottom of the clamping member (23) is formed with an annular groove (231) clamped with the inner wall of the brush head body (21), the clamping member (23) is formed with a clamping hole (232) for the driving shaft (42) of the driving device (4) to pass through, one side of the clamping hole (232) is formed with an elastic buckle arm (233) for clamping and fixing the driving shaft (42), and the silica gel sleeve (24) is formed with a plurality of protrusions (241), the protrusions (241) are located at one side of the back of the bristles (22), and the bristles (22) pass through the silica gel sleeve (24).

10. A control adjustment method of an electric toothbrush, comprising an electric toothbrush controlled and adjusted by a toothbrush head stress according to claim 8, characterized in that: In the first step, the toothbrush head (2) senses the extrusion force; In the second step, when one side of the bristles (22) of the toothbrush head (2) is subjected to the extrusion force, the driving device (4) swings around the hinge to make the swing support (6) contact the first sensing device (51) to generate a start signal, the circuit board (5) controls the electric toothbrush to start and work at the first preset gear. Third step, when the bristles (22) of the toothbrush head (2) are pressed to the first preset value, a strong vibration mode signal is generated, and the circuit board (5) controls the driving device (4) to increase the vibration strength and amplitude; Fourth step, when the toothbrush head (2) is pressed to more than the second preset value, a protection signal is generated, and the circuit board (5) controls the driving device (4) to stop temporarily and then reduce the vibration strength and amplitude; Fifth step, when the toothbrush head (2) is pressed to less than the first preset value, the circuit board (5) controls the driving device (4) to return to the first preset gear; Sixth step, when the toothbrush head (2) is pressed to zero, the first reset device (71) resets the driving device (4), the first elastic conductive sheet (73) is separated from the first sensing device (51), and the circuit board (5) controls the electric toothbrush to standby or shut down; Seventh step, when the back of the bristles (22) of the toothbrush head (2) is pressed, the driving device (4) swings around the hinge to make the swing bracket (6) contact the third sensing device (53), a standby signal is generated, the electric toothbrush enters the wake-up state, and a gear shifting signal is output, and the circuit board (5) controls the electric toothbrush to switch the brushing mode and start temporarily at the current gear.

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