Toothbrush movement and electric toothbrush

Abstract

The embodiment of the utility model discloses a toothbrush movement and an electric toothbrush, and the toothbrush movement comprises a motor support, a motor body, a motor shaft and a pressure sensing module; the motor body is mounted in the motor bracket; one end of the motor shaft is connected into the motor body, the other end extends out of the motor body to form a connecting section, the connecting section is provided with a first side face and a second side face which are oppositely arranged, and the first side face is used for bearing tooth brushing pressure; the pressure sensing module comprises a deformation part and a pressure sensor arranged on the deformation part, the deformation part is fixed to the position, close to the connecting section, of the motor support, the deformation part and the second side face are arranged in a spaced mode, so that after the first side face is pressed, the second side face abuts against the deformation part, and the pressure sensor detects the stress of the motor shaft. According to the toothbrush machine core, the large-amplitude rotation of the motor shaft is not influenced while the pressure detection precision is ensured.

Description

Technical Field

[0001] The present application relates to the technical field of electric toothbrushes, and in particular to a toothbrush movement and an electric toothbrush. Background Art

[0002] With improved living standards and growing health awareness, the electric toothbrush market is experiencing rapid growth. The application of electric toothbrushes is expanding, from the adult market to the children's market. However, different users have varying perceptions of brushing pressure, especially among children, who often struggle to accurately determine and control the appropriate brushing pressure. Excessive pressure not only reduces cleaning effectiveness but can also irritate and damage gum tissue, and wear away tooth enamel.

[0003] In the related art, a pressure sensor is installed on the electric toothbrush to detect whether the toothbrush head applies excessive pressure to the teeth. In order to improve the detection accuracy, the current pressure detection scheme of the electric toothbrush is usually to directly attach a strain gauge (such as piezoelectric or piezoresistive) to the motor shaft of the toothbrush to detect the force on the brush head. The strain gauge is connected to the main control board through a flexible circuit board. If the electric toothbrush uses a motor with a motor shaft that can rotate significantly or 360 degrees, the flexible circuit board will affect the rotation of the motor shaft, and the rotation of the motor shaft will also cause the flexible circuit board to twist and break, thereby causing the pressure detection function to fail.

[0004] The above content is only used to assist in understanding the technical solution of the utility model and does not constitute an admission that the above content is prior art. Utility Model Content

[0005] In view of the above problems, the present invention proposes a toothbrush movement, which aims to solve the technical problem that the current pressure sensor attached to the motor shaft cannot adapt to the pressure detection of the motor shaft with large rotation.

[0006] To achieve the above-mentioned purpose, the toothbrush core proposed in the present invention includes a motor bracket, a motor body, a motor shaft and a pressure sensing module;

[0007] The motor body is installed in the motor bracket;

[0008] One end of the motor shaft is connected to the motor body, and the other end extends out of the motor body to form a connecting section, wherein the connecting section has a first side surface and a second side surface that are oppositely arranged, and the first side surface is used to bear the pressure of brushing;

[0009] The pressure sensing module includes a deformation part and a pressure sensor arranged on the deformation part. The deformation part is fixed at a position of the motor bracket adjacent to the second side surface. The deformation part faces the second side surface and is spaced apart from the second side surface so that after the first side surface is pressurized, the second side surface presses against the deformation part, and the pressure sensor detects the force applied to the motor shaft.

[0010] In one embodiment, the toothbrush core further comprises an elastic sleeve arranged on the periphery of the connecting section, and the outer peripheral wall of the elastic sleeve is spaced apart from the deformation portion so that the elastic sleeve presses against the deformation portion after the first side surface is pressurized.

[0011] In one embodiment, the toothbrush movement also includes a main control board installed on the motor bracket, and the pressure sensing module also includes a hard circuit board, which is fixed to the end of the motor bracket adjacent to the connecting section, and the board surface is arranged toward the second side surface; the deformation part is arranged on the hard circuit board, and the hard circuit board is electrically connected to the main control board.

[0012] In one embodiment, the main control board is fixed to the side of the motor bracket that is on the same side as the first side; the pressure sensing module also includes a flexible circuit board, one end of the flexible circuit board is electrically connected to the hard circuit board, and the other end is electrically connected to the main control board.

[0013] In one embodiment, the motor bracket includes a bracket body and a mounting protrusion connected to the bracket body near one end face of the connecting section; the motor body is fixed in the bracket body; a waterproof component is installed in the mounting protrusion and is sleeved on the outer periphery of the connecting section, and the hard circuit board is located between the waterproof component and the motor body; a through hole is provided on the mounting protrusion, and the flexible circuit board passes through the through hole to the bracket body.

[0014] In one embodiment, the flexible circuit board includes a longitudinal extension section and a transverse extension section, the longitudinal extension section extends along the length direction of the bracket body, and one end of the longitudinal extension section is electrically connected to the rigid circuit board, and the other end is connected to the transverse extension section; the transverse extension section extends along the bottom surface of the motor body and is electrically connected to the main control board.

[0015] In one embodiment, the toothbrush movement further includes a power supply unit disposed below the motor body, and the transverse extension section is disposed between the motor body and the power supply unit and is plugged into the main control board.

[0016] In one embodiment, the toothbrush movement also includes a handle shell, a bottom cover assembly and an overpressure prompt module. The bottom cover assembly is fixed to the bottom end of the handle shell, the motor body and the pressure sensing module are installed in the handle shell, and the connecting section extends out of the handle shell; the overpressure prompt module is installed on the bottom cover assembly to issue a prompt message after the pressure value detected by the pressure sensor exceeds a threshold value.

[0017] In one embodiment, the overpressure warning module includes a light board, and a light-transmitting window is provided on the bottom cover assembly, and the light board is used to emit a warning light toward the light-transmitting window when the pressure value detected by the pressure sensor exceeds a threshold value; and / or,

[0018] The overpressure prompt module includes a speaker, and the bottom cover assembly is provided with a plurality of sound holes connected to the outside; the speaker is used to issue a voice prompt toward the sound holes when the pressure value detected by the pressure sensor exceeds a threshold.

[0019] The present utility model also proposes an electric toothbrush, comprising a toothbrush head and a toothbrush core as described in any of the above embodiments, wherein the toothbrush head comprises a brush head body and a bristle group, the brush head body being connected to the connecting section of the toothbrush core, and the bristle group being arranged on a side of the brush head body facing away from the second side surface of the connecting section.

[0020] The present toothbrush mechanism comprises a pressure-sensing module comprising a deformable portion and a pressure sensor disposed on the deformable portion. The deformable portion is fixed to a position adjacent to the second side surface of the motor bracket, and the deformable portion faces the second side surface and is spaced apart from the second side surface. When the first side surface is pressurized, the second side surface presses against the deformable portion, thereby triggering the pressure sensor to detect the force applied to the motor shaft. The pressure sensor of this application can directly detect the force applied to the motor shaft, which improves the accuracy and sensitivity of pressure detection compared to solutions in which the pressure sensor detects the pressure applied to the motor body. Furthermore, compared to solutions in which the pressure sensor is directly attached to the motor shaft, the deformable portion provided with the pressure sensor is spaced apart from the second side surface of the motor shaft. This prevents the pressure sensor from affecting the motor shaft from rotating significantly. In other words, significant rotation of the motor shaft does not cause the flexible circuit board of the pressure-sensing module to twist and break, thereby extending the service life of the pressure-sensing module. Furthermore, the spaced apart arrangement of the deformable portion from the second side surface of the motor shaft prevents the motor shaft from constantly triggering the pressure sensor. Instead, it triggers the pressure sensor only when the pressure applied exceeds a certain value, effectively extending the service life of the pressure sensor and reducing the probability of false triggering. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 Shows a schematic structural diagram of an embodiment of a toothbrush core of the present utility model;

[0023] Figure 2 for Figure 1 A partial enlarged view of point A in the middle;

[0024] Figure 3 for Figure 1 A cross-sectional view of the toothbrush movement at one angle;

[0025] Figure 4 for Figure 3 A partial enlarged view of point B in the middle;

[0026] Figure 5 This is a schematic diagram of the assembly structure of another embodiment of the toothbrush core and the toothbrush head of the present invention;

[0027] Figure 6 for Figure 5 A partial enlarged view of point C in the middle;

[0028] Figure 7 Based Figure 5 Assembly diagram of the output shaft, motor body, main control board, and pressure sensing module;

[0029] Figure 8 This is a schematic structural diagram of an embodiment of the electric toothbrush of the present utility model;

[0030] Figure 9 for Figure 8 A partial cross-sectional view of an electric toothbrush;

[0031] Figure 10 Assemble the bottom cover assembly and the overpressure warning module of the utility model Figure 1 A schematic structural diagram of an embodiment;

[0032] Figure 11 This is a structural schematic diagram of another embodiment of the assembly diagram of the bottom cover assembly and the overpressure warning module of the utility model;

[0033] Figure 12 for Figure 11 A cross-sectional view of the structure at one angle.

[0034] Description of Figure Numbers:

[0035] Label name Label name Label name 100 Toothbrush movement 110 Motor bracket 111 Bracket body 112 Mounting convex part 113 Via 114 Waterproof parts 120 Motor body 130 motor shaft 131 Connecting segment 132 First side 133 Second side 140 pressure-sensitive module 141 pressure sensor 142 Rigid circuit boards 143 Flexible circuit boards 144 Longitudinal extension section 145 Horizontal extension section 150 Elastic sleeve 161 Main control board 162 Power supply unit 170 Brush handle shell 180 Bottom cover assembly 181 Light-transmitting window 182 Sound hole 190 Overvoltage warning module 191 Light Board 192 speaker 200 toothbrush head 210 Brush head body 220 Brush set

[0036] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0038] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0039] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features specified as "first" or "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing throughout the text is to include three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that meet both A and B.

[0040] The utility model provides a toothbrush core.

[0041] In the embodiment of this utility model, please refer to Figures 1 to 7 The toothbrush mechanism 100 includes a motor bracket 110, a motor body 120, a motor shaft 130 and a pressure sensing module 140. The motor body 120 is installed in the motor bracket 110. One end of the motor shaft 130 is connected to the motor body 120, and the other end extends out of the motor body 120 to form a connecting section 131. The connecting section 131 has a first side 132 and a second side 133 that are relatively arranged. The first side 132 is used to bear the brushing pressure. The pressure sensing module 140 includes a deformation part and a pressure sensor 141 provided on the deformation part. The deformation part is fixed to a position of the motor bracket 110 adjacent to the second side 133. The deformation part faces the second side 133 and is spaced apart from the second side 133, so that after the first side 132 is pressurized, the second side 133 presses against the deformation part, and the pressure sensor 141 detects the force applied to the motor shaft 130.

[0042] In this embodiment, the motor shaft 130 mainly plays the role of connection and transmission. The motor body 120 includes a rotor assembly, a stator assembly, etc. One end of the motor shaft 130 extends into the motor body 120 and is connected to the rotor assembly to drive it to rotate significantly or vibrate at high frequency through the motor body 120. The other end of the motor shaft 130 extends out of the motor body 120 to connect with the toothbrush head 200, thereby driving the toothbrush head 200 to rotate significantly or vibrate at high frequency, which can simulate the up and down swinging of a human hand to brush teeth. The motor bracket 110 is used for power supply installation. The structure of the motor bracket 110 can be many. For example, the whole can be cylindrical, cover-shaped, etc., which are not specifically limited here. The motor body 120 and the motor bracket 110 can be fixedly connected by screws or the like.

[0043] It is understood that after the motor shaft 130 is connected to the toothbrush head 200, if the user applies pressure to the toothbrush head 200, the force acts directly on the first side 132 of the motor shaft 130. Therefore, for ease of explanation, the side of the electric toothbrush with the bristle assembly 220 is defined as the front side, and the side opposite the front side is defined as the back side. The first side 132 is located on the front side of the motor shaft 130, and the second side 133 is located on the back side of the motor shaft 130.

[0044] The deformable portion of the pressure sensing module 140 can be a part of the hard circuit board 142 or the elastic bracket. The deformable portion is fixed at a position adjacent to the second side 133 of the motor bracket 110, and the deformable portion is facing the second side 133. Therefore, after the motor shaft 130 is pressurized, the motor shaft 130 deforms backward, causing the deformable portion to press against the deformable portion, thereby triggering the pressure sensor 141 to perform pressure on the motor shaft 130. The deformable portion and the second side 133 of the motor shaft 130 are spaced apart, and the spacing between the two can be designed according to the pressure threshold. It can be understood that by spaced apart from the first side 132, the motor shaft 130 will only trigger the pressure sensor 141 for pressure detection when it is subjected to a brushing pressure exceeding the preset pressure. In this way, the pressure sensor 141 does not need to be triggered in real time, which can improve the service life of the pressure sensor 141 and reduce false touches.

[0045] By making the deformation part face the second side surface 133 of the output shaft, that is, when subjected to a preset pressure, the deformation part abuts against the back of the output shaft. Compared with the method of detecting the pressure on the toothbrush head 200 by displacement by making the deformation part adhere to the front of the output shaft, the deformation part can directly bear the back pressure of the output shaft or the motor housing, so that the detection accuracy and detection sensitivity of the pressure sensor 141 on the deformation part are higher.

[0046] The toothbrush movement 100 of the present invention comprises a pressure-sensing module 140 including a deformable portion and a pressure sensor 141 disposed on the deformable portion. The deformable portion is fixed to the motor bracket 110 adjacent to the second side surface 133, facing the second side surface 133 and spaced from the second side surface 133. Consequently, when the first side surface 132 is pressurized, the second side surface 133 presses against the deformable portion, thereby triggering the pressure sensor 141 to detect the force applied to the motor shaft 130. The pressure sensor 141 can directly detect the force applied to the motor shaft 130, thereby improving the accuracy and sensitivity of pressure detection compared to a solution in which the pressure sensor 141 detects the pressure applied to the motor body 120. Compared to a solution in which the pressure sensor 141 is directly attached to the motor shaft 130, the present application provides for a spacing between the deformable portion on which the pressure sensor 141 is provided and the second side surface 133 of the motor shaft 130. This allows the pressure sensor 141 to not affect the substantial rotation of the motor shaft 130. In other words, substantial rotation of the motor shaft 130 will not cause the flexible circuit board 143 of the pressure sensing module to twist and break, thereby increasing the service life of the pressure sensing module. Furthermore, the spacing between the deformable portion and the second side surface 133 of the motor shaft 130 means that the motor shaft 130 will not constantly trigger the pressure sensor 141. Instead, it will only trigger the pressure sensor 141 when the pressure exceeds a certain value. This can increase the service life of the pressure sensor 141 and reduce the probability of false triggers.

[0047] In one embodiment, please refer to Figures 3 to 7 The toothbrush core 100 further includes an elastic sleeve 150 sleeved on the periphery of the connecting section 131, and the outer peripheral wall of the elastic sleeve 150 is spaced apart from the deformation portion so that the elastic sleeve 150 presses against the deformation portion after the first side surface 132 is pressurized.

[0048] In this embodiment, the elastic sleeve 150 can be made of an elastic material such as silicone or rubber. The elastic sleeve 150 can be sealed and securely mounted on the motor shaft 130. By allowing the back of the motor shaft 130 to abut the deformable portion through the elastic sleeve 150, the deformable portion and the motor shaft 130 can be prevented from colliding with each other. The elastic sleeve 150 can also absorb and cushion vibrations transmitted from the motor shaft 130 to the deformable portion, thereby improving the detection accuracy of the pressure sensor 141.

[0049] In one embodiment, if Figures 4 to 7 As shown, the toothbrush movement 100 also includes a main control board 161 installed on the motor bracket 110, and the pressure sensing module 140 also includes a hard circuit board 142. The hard circuit board 142 is fixed to the end of the motor bracket 110 adjacent to the connecting section 131, and the board surface is arranged toward the second side surface 133; the deformation part is arranged on the hard circuit board 142, and the hard circuit board 142 is electrically connected to the main control board 161.

[0050] In this embodiment, the main control board 161 and the motor bracket 110 can be fixedly connected by screws, clips, or positioning post insertion. Specifically, the rigid circuit board 142 can be fixedly connected to the end of the motor bracket 110 by snapping or interlocking. The fixed connection of the rigid circuit board 142 to the motor bracket 110 ensures its stable installation. The rigid circuit board 142 is fixedly connected to the end of the motor bracket 110 adjacent to the connecting section 131, with the surface of the rigid circuit board 142 facing the second side surface 133. In this way, a portion of the rigid circuit board 142 forms the deformable portion. That is, the rigid circuit board 142 can serve as a deformable plate, and the surface deformation is more obvious when the motor shaft 130 is subjected to force. Compared to providing the deformable portion on the flexible circuit board 143, this can reduce the difficulty of fixing the deformable portion. The rigid circuit board 142 and the main control board 161 can be electrically connected via the flexible circuit board 143, wires, and other structures.

[0051] Further, please refer again to Figures 1 to 7 , the main control board 161 is fixed to the side of the motor bracket 110 on the same side as the first side 132; the pressure sensing module 140 also includes a flexible circuit board 143, one end of the flexible circuit board 143 is electrically connected to the hard circuit board 142, and the other end is electrically connected to the main control board 161.

[0052] In this embodiment, the main control board 161 is fixed to the side wall of the motor bracket 110 facing away from the second side surface, that is, the main control board 161 is fixed to the front of the motor bracket 110. Adaptively, the buttons of the electric toothbrush are also arranged on the front of the brush handle housing 170. The flexible circuit board 143 and the main control board 161 can be electrically connected by plugging, welding, etc., which are not specifically limited here. Since the circuit board assembly is arranged on the back of the motor bracket 110 and the main control board 161 is arranged on the front of the motor bracket 110, the rigid circuit board 142 and the main control board 161 are electrically connected through the flexible circuit board 143. The flexible circuit board 143 can be bent to adapt to the complex spatial layout of the electric toothbrush.

[0053] Furthermore, if Figures 1 to 4 As shown, the motor bracket 110 includes a bracket body 111 and a mounting protrusion 112 connected to an end face of the bracket body 111 near the connecting section 131; the motor body 120 is fixed in the bracket body 111; a waterproof component 114 is installed in the mounting protrusion 112 and is sleeved on the outer periphery of the connecting section 131, and the hard circuit board 142 is located between the waterproof component 114 and the motor body 120; a through hole 113 is opened on the mounting protrusion 112, and the flexible circuit board 143 passes through the through hole 113 to the bracket body 111.

[0054] In this embodiment, by disposing a waterproof member 114 within the mounting protrusion 112, the motor shaft 130 can be sealed and waterproofed. The rigid circuit board 142 can be partially or completely embedded within the mounting protrusion 112. By positioning the rigid circuit board 142 between the waterproof member 114 and the motor body 120, on the one hand, the elastic sleeve 150, the rigid circuit board 142, the pressure sensor 141, and other components are positioned below the waterproof member 114, effectively preventing external water or other liquids from affecting the detection of the pressure sensor 141; on the other hand, the upper and lower limits of the rigid circuit board 142 can be positioned between the motor body 120 and the waterproof member 114, thereby improving the installation stability of the rigid circuit board 142.

[0055] In one embodiment, please refer to Figure 1 、 Figure 3 、 Figure 5 and Figure 7 The flexible circuit board 143 includes a longitudinal extension section 144 and a transverse extension section 145. The longitudinal extension section 144 extends along the length direction of the bracket body 111, and one end of the longitudinal extension section 144 is electrically connected to the hard circuit board 142, and the other end is connected to the transverse extension section 145; the transverse extension section 145 extends along the bottom surface of the motor body 120 and is electrically connected to the main control board 161.

[0056] In this embodiment, by extending the longitudinal extension section 144 of the flexible circuit board 143 along the length of the motor bracket 110 and the transverse extension section 145 along the bottom surface of the motor body 120, the flexible circuit board 143 is electrically connected to the main control board 161 while eliminating the need for the flexible circuit board 143 to be twisted and wrapped around the periphery of the motor bracket 110. This improves the service life of the flexible circuit board 143. Furthermore, the longitudinal extension section 144 can conform to the outer peripheral wall of the motor bracket 110, while the transverse extension section 145 can be adjacent to or conform to the bottom surface of the motor body 120, preventing the flexible circuit board 143 from floating or shifting, thereby ensuring stable installation between the flexible circuit board 143 and the motor bracket 110.

[0057] Furthermore, the toothbrush movement 100 also includes a power supply unit 162 provided below the motor body 120, and the lateral extension section 145 is provided between the motor body 120 and the power supply unit 162, and is plugged into the main control board 161. Specifically, the motor bracket 110 can be extended downward to form a battery mounting compartment for the power supply unit 162 to be installed. The power supply unit 162 can also be installed by additionally providing a battery bracket. The lateral extension section 145 is provided between the motor body 120 and the power supply unit 162, which can further prevent the flexible circuit board 143 from shifting or becoming disconnected, thereby improving the connection stability of the entire flexible circuit board 143. The lateral extension section 145 is plugged into and electrically connected to the main control board 161, making the wiring operation more convenient.

[0058] In one embodiment, if Figures 8 to 12 As shown, the toothbrush movement 100 also includes a handle shell 170, a bottom cover assembly 180 and an overpressure prompt module 190. The bottom cover assembly 180 is fixed to the bottom end of the handle shell 170, the motor body 120 and the pressure sensing module are installed in the handle shell 170, and the connecting section 131 extends out of the handle shell 170; the overpressure prompt module 190 is installed on the bottom cover assembly 180 to issue a prompt message after the pressure value detected by the pressure sensor 141 exceeds a threshold value.

[0059] In this embodiment, the handle housing 170 provides installation space and protection for the motor body 120, motor bracket 110, power supply unit 162, and other components. The handle housing 170 can be a single-layer structure or a double-layer structure with a metal outer layer and a plastic inner layer. The handle housing 170 can have a variety of shapes, including, for example, a circular, elliptical, or rounded-corner triangular cross-section. The shape and structure of the handle housing 170 are not specifically limited herein.

[0060] The overpressure prompt module 190 can include one or more prompting components such as a light board 191, a speaker 192, and a buzzer. It only needs to be able to issue a prompt message after the pressure sensor 141 detects that the pressure on the toothbrush head 200 exceeds a threshold value. The specific type of the overpressure prompt module 190 is not limited here. By setting the overpressure prompt module 190, when the user uses an electric toothbrush with too much force to brush their teeth, the overpressure prompt module 190 will issue an overpressure prompt message. The user can reduce the brushing force according to the prompt message to avoid damaging the teeth or gums. Placing the overpressure prompt module 190 on the bottom cover assembly 180 makes it easier to disassemble and repair the overpressure prompt module 190 than setting it in other positions in the brush handle housing 170.

[0061] In one embodiment, please refer to Figures 9 to 12The overpressure warning module 190 includes a light board 191. The bottom cover assembly 180 is provided with a light-transmitting window 181. The light board 191 is used to emit a warning light toward the light-transmitting window 181 when the pressure value detected by the pressure sensor 141 exceeds a threshold value; and / or

[0062] Please refer to Figure 11 and Figure 12 The overpressure prompt module 190 includes a speaker 192, and the bottom cover assembly 180 is provided with a plurality of sound holes 182 connected to the outside; the speaker 192 is used to issue a voice prompt toward the sound hole 182 after the pressure value detected by the pressure sensor 141 exceeds a threshold.

[0063] The bottom cover assembly 180 can be set to be transparent or translucent in whole or in part to form the light-transmitting window 181. The light-transmitting window 181 can be in the shape of an annular ring, a circle, a rectangle, etc., and can be designed according to actual needs, and is not specifically limited here. The light board 191 specifically includes a PCB board and a plurality of lamp bodies arranged on the PCB board. The overvoltage prompt module 190 includes a light board 191, and the prompt light is transmitted through the light-transmitting window 181 of the bottom cover assembly 180 to achieve the purpose of overvoltage reminder, making the overvoltage reminder more intuitive and eye-catching, and easier to be observed by the user when brushing his teeth. In addition, the light board 191 can also display the charging effect to make the product more beautiful to use.

[0064] By making the overpressure prompt module 190 include a speaker 192, when the user uses the electric toothbrush to brush too hard and the pressure value detected by the pressure sensor 141 exceeds the threshold, the speaker 192 will issue a voice prompt through the sound hole 182 to prompt the user to reduce the brushing force. The use of voice prompts makes the overpressure prompt more direct and obvious, and even blind people can receive the overpressure prompt information.

[0065] The present invention also provides an electric toothbrush comprising a toothbrush head 200 and a toothbrush mechanism 100. The specific structure of the toothbrush mechanism 100 is similar to that of the above-mentioned embodiments. The toothbrush head 200 comprises a brush head body 210 and a bristle group 220. The brush head body 210 is connected to the connecting section 131 of the toothbrush mechanism 100, and the bristle group 220 is disposed on the side of the brush head body 210 facing away from the second side surface 133 of the connecting section 131. Since this electric toothbrush utilizes all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above-mentioned embodiments, which will not be described in detail here. Typically, the brush head body 210 and the connecting section 131 are detachably connected to facilitate replacement of the toothbrush head 200. The connection between the connecting section 131 of the motor shaft 130 and the brush head body 210 can be achieved in a variety of ways, and specific designs can be referred to in existing designs, which will not be described in detail here. The shape and specific structure of the toothbrush head 200 can be selected and designed according to actual needs and are not specifically limited here. The bristle group 220 is arranged on the side of the brush head body 210 away from the second side surface 133 of the connecting section 131 , that is, the brushing pressure directly acts on the second side surface 133 of the connecting section 131 of the motor shaft 130 through the brush head body 210 .

[0066] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A toothbrush movement, characterized in that: Including motor bracket, motor body, motor shaft and pressure sensing module; The motor body is installed in the motor bracket; One end of the motor shaft is connected to the motor body, and the other end extends out of the motor body to form a connecting section, wherein the connecting section has a first side surface and a second side surface that are oppositely arranged, and the first side surface is used to bear the pressure of brushing; The pressure sensing module includes a deformation part and a pressure sensor arranged on the deformation part. The deformation part is fixed to a position of the motor bracket adjacent to the second side surface. The deformation part faces the second side surface and is spaced apart from the second side surface so that after the first side surface is pressurized, the second side surface presses against the deformation part, and the pressure sensor detects the force applied to the motor shaft.

2. The toothbrush core according to claim 1, wherein: The toothbrush core further comprises an elastic sleeve sleeved around the connecting section, wherein the outer peripheral wall of the elastic sleeve is spaced apart from the deformable portion so that the elastic sleeve presses against the deformable portion after the first side surface is pressurized.

3. The toothbrush core according to claim 1 or 2, characterized in that: The toothbrush movement also includes a main control board installed on the motor bracket, and the pressure sensing module also includes a hard circuit board. The hard circuit board is fixed to the end of the motor bracket adjacent to the connecting section, and the board surface is arranged toward the second side surface; the deformation part is arranged on the hard circuit board, and the hard circuit board is electrically connected to the main control board.

4. The toothbrush core according to claim 3, wherein: The main control board is fixed to the side of the motor bracket that is on the same side as the first side; the pressure sensing module also includes a flexible circuit board, one end of the flexible circuit board is electrically connected to the hard circuit board, and the other end is electrically connected to the main control board.

5. The toothbrush core according to claim 4, wherein: The motor bracket includes a bracket body and a mounting protrusion connected to the bracket body near one end face of the connecting section; the motor body is fixed in the bracket body; a waterproof component is installed in the mounting protrusion and is sleeved on the outer periphery of the connecting section, and the hard circuit board is located between the waterproof component and the motor body; a through hole is provided on the mounting protrusion, and the flexible circuit board passes through the through hole to the bracket body.

6. The toothbrush core according to claim 5, characterized in that: The flexible circuit board includes a longitudinal extension section and a transverse extension section. The longitudinal extension section extends along the length direction of the bracket body, and one end of the longitudinal extension section is electrically connected to the rigid circuit board, and the other end is connected to the transverse extension section; the transverse extension section extends along the bottom surface of the motor body and is electrically connected to the main control board.

7. The toothbrush core according to claim 6, wherein: The toothbrush core further comprises a power supply unit disposed below the motor body. The transverse extension section is disposed between the motor body and the power supply unit and is plugged into the main control board.

8. The toothbrush core according to claim 1, wherein: The toothbrush movement further includes a handle housing, a bottom cover assembly, and an overpressure prompt module. The bottom cover assembly is fixed to the bottom end of the handle housing. The motor body and the pressure sensing module are installed in the handle housing. The connecting section extends out of the handle housing. The overpressure prompt module is installed on the bottom cover assembly to issue a prompt message after the pressure value detected by the pressure sensor exceeds a threshold.

9. The toothbrush core according to claim 8, wherein: The overpressure warning module includes a light board, and a light-transmitting window is provided on the bottom cover assembly. The light board is used to emit a warning light toward the light-transmitting window when the pressure value detected by the pressure sensor exceeds a threshold value; and / or, The overpressure prompt module includes a speaker, and the bottom cover assembly is provided with a plurality of sound holes connected to the outside; the speaker is used to issue a voice prompt toward the sound holes when the pressure value detected by the pressure sensor exceeds a threshold.

10. An electric toothbrush, characterized in that: It comprises a toothbrush head and a toothbrush core as described in any one of claims 1 to 9, wherein the toothbrush head comprises a brush head body and a bristle group, the brush head body is connected to the connecting section of the toothbrush core, and the bristle group is arranged on the side of the brush head body away from the second side of the connecting section.

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