Electric toothbrush

Abstract

The utility model discloses an electric toothbrush, which relates to the technical field of oral cavity cleaners and comprises a shell with a containing cavity, a motor component and a control component. The motor assembly comprises a motor, a transmission shaft and a support assembly, one end of the transmission shaft is connected with the motor, the other end extends out of the containing cavity to be connected with the brush head, and the motor is installed in the support assembly and used for driving the transmission shaft to swing to drive the brush head to swing. The control assembly comprises a controller and a pressure sensor which are arranged in the containing cavity, and the support assembly is arranged in the containing cavity in a swinging mode, so that when the transmission shaft and / or the brush head located outside the containing cavity are / is subjected to first pressure, the support assembly swings, and the end, away from the transmission shaft, of the support assembly applies second pressure to the pressure sensor; the pressure sensor receives the second pressure and outputs a trigger signal, and when the second pressure is larger than a first preset value, the controller receives the trigger signal and controls the motor to be started, so that the electric toothbrush is in a starting state. The operability of the electric toothbrush is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of oral cleaners, in particular to an electric toothbrush. Background Art

[0002] Electric toothbrushes are accepted by the public because of their efficient cleaning effect, and the iteration and update of electric toothbrush technology is also on the rise. At present, electric toothbrushes are roughly divided into two categories, including rotary toothbrushes and vibrating toothbrushes. Among them, the principle of rotary toothbrushes is to use a micro rotary motor to drive the circular brush head to rotate to achieve cleaning. The principle of vibrating toothbrushes is to use its internal vibration motor to make the brush head produce high-frequency vibration perpendicular to the direction of the brush handle to achieve cleaning. Generally, electric toothbrushes include core components such as a housing, a drive motor, a control panel, a battery, and a brush head.

[0003] At present, the control switch of electric toothbrushes is basically placed on the housing. When the user uses the electric toothbrush and follows the normal operation process, squeezes toothpaste, turns on the switch, and performs the steps of oral cleaning in sequence, because the working principle of the electric toothbrush is that the electric motor controls the rotation or high-frequency vibration of the brush head through the main control substrate. The toothpaste on the brush head will splash as the brush head shakes. If the operation process is changed to squeezing toothpaste, putting it in the mouth, turning on the switch and performing the steps in sequence, because the switch is on the handle, the position of the brush head cannot be confirmed and controlled by visual perception at the same time, which also causes inconvenience in use. Utility Model Content

[0004] The main purpose of the utility model is to provide an electric toothbrush, aiming to improve the convenience of operation of the electric toothbrush.

[0005] In order to achieve the above-mentioned purpose, the utility model provides an electric toothbrush, which comprises: a housing having a containing cavity;

[0006] A motor assembly, comprising a motor, a transmission shaft and a bracket assembly, wherein one end of the transmission shaft is connected to the motor, and the other end extends out of the accommodating cavity for connecting to the brush head, and the motor is installed in the bracket assembly and is used to drive the transmission shaft to swing, so as to drive the brush head to swing; and,

[0007] A control component includes a controller and a pressure sensor disposed in the accommodating cavity. The bracket component can be swingably disposed in the accommodating cavity so that when the transmission shaft and / or the brush head located outside the accommodating cavity is subjected to a first pressure, the bracket component swings and one end away from the transmission shaft applies a second pressure corresponding to the first pressure to the pressure sensor. The pressure sensor receives the second pressure and outputs a trigger signal. When the second pressure is greater than a first preset value, the controller receives the trigger signal and controls the motor to turn on, so that the electric toothbrush is in a power-on state.

[0008] In one embodiment, the bracket assembly includes a first bracket and a second bracket. The motor is installed inside the first bracket. The second bracket is located in the accommodation cavity and connected to the housing. A swing member is provided on one side of the first bracket close to the second bracket. A circular groove is provided on one side of the second bracket close to the first bracket. The swing member is hinged in the circular groove so that the first bracket is swingably arranged in the accommodation cavity;

[0009] When the electric toothbrush is in the powered-on state, the pressure sensor receives the second pressure and outputs an adjustment signal. The controller receives the adjustment signal and controls the motor to output a corresponding working power. The working power includes a first power W1 and a second power W2, where W1 < W2. The controller determines the working power after staying at the corresponding working power for a preset duration so that the electric toothbrush is in the corresponding working state.

[0010] In one embodiment, the control assembly further includes a pressure feedback device electrically connected to the controller;

[0011] When the electric toothbrush is in the working state and the second pressure is greater than the second preset value, the pressure sensor receives the second pressure and outputs an alarm signal. The controller receives the alarm signal and controls the pressure feedback device to emit a prompt message.

[0012] In one embodiment, the pressure feedback device includes a fixing ring and a light-emitting member. The light-emitting member is installed on the fixing ring and electrically connected to the controller. The fixing ring is located in the accommodation cavity and on one side of the motor close to the transmission shaft.

[0013] In one embodiment, the bracket assembly includes a first bracket. The motor is installed inside the first bracket. An abutting portion is provided outside one end of the first bracket away from the transmission shaft. A push rod is provided on the abutting portion. A ribbed protrusion is provided at one end of the push rod. The ribbed protrusion is used to abut against the pressure sensor.

[0014] In one embodiment, the abutting portion is provided with a positioning post. The positioning post is located on the side of the push rod away from the transmission shaft. An elastic member is sleeved outside the positioning post. One end of the elastic member abuts against the abutting portion, and the other end abuts against the inner wall of the housing.

[0015] In one embodiment, the control component also includes a capacitive sensor arranged on the controller, and a receiving groove is provided on a side of the capacitive sensor close to the controller, and the pressure sensor is located in the receiving groove. The bracket assembly swings and applies the second pressure corresponding to the first pressure to the capacitive sensor at one end away from the transmission shaft, causing the capacitive sensor to deform and apply the second pressure to the pressure sensor.

[0016] In one embodiment, a protrusion is provided on a side of the capacitive sensor close to the controller, and the protrusion is located in the receiving groove and abuts against the pressure sensor.

[0017] In one embodiment, a through hole is formed through the controller, the through hole is located on a side of the pressure sensor away from the capacitive sensor, and two opposite ends of the pressure sensor are connected to edges of the through hole.

[0018] In one embodiment, the controller is provided with mounting holes, the mounting holes are distributed along the outer edge of the through hole, and the capacitive sensor is at least partially located in the mounting holes and connected to the controller.

[0019] The technical solution of the utility model adopts the method of pressing the brush head to start the electric toothbrush. The user can use the squeezing of the teeth and the brush head to start the electric toothbrush in the oral cavity, avoiding the problem of toothpaste on the electric toothbrush splashing due to the vibration of the toothbrush when the electric toothbrush is turned on outside the oral cavity. At the same time, it avoids the problem of rotating the housing to find the physical button due to the need to press the physical button, thereby improving the ease of operation of the electric toothbrush. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0021] Figure 1 An exploded view of the electric toothbrush of the utility model;

[0022] Figure 2 This is a schematic structural diagram of an embodiment of an electric toothbrush of the utility model;

[0023] Figure 3 It is a cross-sectional view of the electric toothbrush of the utility model;

[0024] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0025] Figure 5 This is a structural schematic diagram of another embodiment of the electric toothbrush of the utility model;

[0026] Figure 6 It is a structural schematic diagram of another embodiment of the electric toothbrush of the utility model.

[0027] Description of Figure Numbers:

[0028] 100-Electric toothbrush;

[0029] 110-housing, 110a-accommodating chamber;

[0030] 120-motor assembly, 121-motor, 122-transmission shaft;

[0031] 130-bracket assembly, 131-first bracket, 1311-abutment portion, 1312-push rod, 1313-muscle protrusion, 1314-positioning column, 1315-swinging member, 132-second bracket, 132a-circular groove, 133-elastic member;

[0032] 140 - control assembly, 141 - controller, 141a - through hole, 141b - mounting hole, 142 - pressure sensor, 143 - pressure feedback device, 1431 - fixing ring, 1432 - light-emitting element, 144 - capacitive sensor, 144a - receiving groove, 1441 - raised portion, 150 - brush head.

[0033] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0036] In addition, the descriptions of "first", "second", etc. in the present utility model are only used 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 defined as "first" and "second" may explicitly or implicitly include at least one of the features. 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 the present utility model.

[0037] Electric toothbrushes are accepted by the public because of their efficient cleaning effect, and the iteration and update of electric toothbrush technology is also on the rise. At present, electric toothbrushes are roughly divided into two categories, including rotary toothbrushes and vibrating toothbrushes. Among them, the principle of rotary toothbrushes is to use a micro rotary motor to drive the circular brush head to rotate to achieve cleaning. The principle of vibrating toothbrushes is to use its internal vibration motor to make the brush head produce high-frequency vibration perpendicular to the direction of the brush handle to achieve cleaning. Generally, electric toothbrushes include core components such as a housing, a drive motor, a control panel, a battery, and a brush head.

[0038] The start switch of current electric toothbrushes is usually set on the handle, and the following problems may occur during use by users:

[0039] First, when the user uses an electric toothbrush and follows the normal operating procedures to squeeze toothpaste, turn on the switch, and perform the steps of oral cleaning in sequence, because the working principle of the electric toothbrush is that the electric motor controls the rotation or high-frequency vibration of the brush head through the main control substrate. The toothpaste on the brush head will splash as the brush head shakes. If the operating process changes to squeezing toothpaste, putting it in the mouth, turning on the switch and proceeding in sequence, because the switch is located on the handle, the position of the brush head cannot be confirmed and controlled through visual perception at the same time as the brush head enters the mouth, which also causes inconvenience in use. Second, when brushing teeth normally, due to the different positions of teeth in the mouth, users usually need to adjust the posture of holding the toothbrush to adapt to the needs of oral cleaning. Also because its physical switch is located on the handle, while adjusting the holding posture, it is very likely that the user will accidentally touch the switch, resulting in an unexpected stop of work in the middle of use, which will also cause great inconvenience in use.

[0040] Furthermore, when the electric toothbrush is cleaning teeth, the greater the pressure the user presses on the brush head, the better the cleaning effect. However, if too much force is applied and the user cannot detect it, it will cause tooth enamel wear, gum bleeding and other damage to the health of teeth and gums.

[0041] To solve the above problems, please refer to Figure 1The utility model provides an electric toothbrush 100. The electric toothbrush 100 comprises: a housing 110 having a receiving cavity 110a;

[0042] The motor assembly 120 includes a motor 121, a transmission shaft 122 and a bracket assembly 130. One end of the transmission shaft 122 is connected to the motor 121, and the other end extends out of the accommodating cavity 110a for connecting to the brush head 150. The motor 121 is installed in the bracket assembly 130 and is used to drive the transmission shaft 122 to swing, so as to drive the brush head 150 to swing; and,

[0043] The control component 140 includes a controller 141 and a pressure sensor 142 disposed in the accommodating chamber 110a. The bracket component 130 is swingably disposed in the accommodating chamber 110a, so that when the transmission shaft 122 and / or the brush head 150 located outside the accommodating chamber 110a are subjected to a first pressure, the bracket component 130 swings and one end away from the transmission shaft 122 applies a second pressure corresponding to the first pressure to the pressure sensor 142. The pressure sensor 142 receives the second pressure and outputs a trigger signal. When the second pressure is greater than the first preset value, the controller 141 receives the trigger signal and controls the motor 121 to turn on, so that the electric toothbrush 100 is in a power-on state.

[0044] In this embodiment, by pressing the brush head 150 to start the electric toothbrush 100, the user can use the teeth and the brush head 150 to squeeze the electric toothbrush 100 in the oral cavity to start the electric toothbrush 100, thereby avoiding the problem of toothpaste on the electric toothbrush 100 splashing due to the vibration of the toothbrush when the electric toothbrush 100 is turned on outside the oral cavity. At the same time, the problem of rotating the housing to find the physical button due to the need to press the physical button is avoided, thereby improving the ease of operation of the electric toothbrush 100.

[0045] In this embodiment, the user presses the brush head 150 toward the teeth to generate a first pressure. Through the lever principle, the transmission shaft 122 connected to the brush head 150 drives the end of the bracket assembly 130 away from the transmission shaft 122 to move in the direction opposite to the pressing direction, so that the bracket assembly 130 contacts and applies a second pressure to the pressure sensor 142. The pressure sensor 142 transmits a trigger signal to the controller 141, and the controller 141 controls the start of the motor 121 to turn on the electric toothbrush 100. Furthermore, a first preset pressure is set to avoid accidentally touching the brush head 150 to turn on the electric toothbrush 100. The first preset pressure is similar to the force required when the user presses the physical switch button to improve the user experience.

[0046] In this embodiment, the pressure sensor 142 has multiple optional types. According to specific actual needs, the pressure sensor 142 can be selected as a spring tube pressure sensor 142, a semiconductor pressure sensor 142, a ceramic pressure sensor 142, a spring pressure sensor 142, a piezoresistive pressure sensor 142, etc.

[0047] In an embodiment of the present utility model, please refer to Figures 2 to 4 , the bracket assembly 130 includes a first bracket 131 and a second bracket 132. The motor 121 is installed inside the first bracket 131. The second bracket 132 is located inside the accommodation cavity 110a and is connected to the housing. On one side of the first bracket 131 close to the second bracket 132, there is a swinging member 1315. On one side of the second bracket 132 close to the first bracket 131, there is a circular groove 132a. The swinging member 1315 is hinged inside the circular groove 132a, so that the first bracket 131 is swingably arranged inside the accommodation cavity 110a;

[0048] When the electric toothbrush 100 is in the powered-on state, the pressure sensor 142 receives the second pressure and outputs an adjustment signal. The controller 141 receives the adjustment signal and controls the motor 121 to output a corresponding working power. The working power includes a first power W1 and a second power W2, where W1 < W2. After staying at the corresponding working power for a preset duration, the controller 141 determines the working power, so that the electric toothbrush 100 is in the corresponding working state.

[0049] In this embodiment, in order to facilitate the user to switch the working state of the electric toothbrush 100, when the electric toothbrush 100 is in the powered-on state, pressing the brush head 150 once (the transmission shaft 122 receives the first pressure) can switch the output working power of the motor 121. By observing the vibration frequency of the brush head 150 and selecting the desired vibration frequency of the brush head 150, after staying at this mode for a preset duration, such as 3 seconds, 4 seconds or 5 seconds, etc., the working power of the motor 121 can be confirmed, so that the electric toothbrush 100 keeps working in the corresponding working state. After brushing for a certain period of time, the electric toothbrush 100 will automatically stop working to prompt the user that the brushing is over. The present utility model has a mode memory function, that is, the next time it is used, pressing the brush head 150 to start the electric toothbrush 100 will turn it on in the mode selected last time. Further, in order to facilitate the user to stop brushing at any time during the brushing process, a separate shutdown button assembly (not shown in the figure) is also provided on the housing 110 to control the shutdown of the electric toothbrush 100.

[0050] In an embodiment of the present utility model, please refer to Figures 2 to 4 , the control assembly 140 further includes a pressure feedback device 143 electrically connected to the controller 141;

[0051] When the electric toothbrush 100 is in the working state, when the second pressure is greater than the second preset value, the pressure sensor 142 receives the second pressure and outputs an alarm signal. The controller 141 receives the alarm signal and controls the pressure feedback device 143 to send out a prompt message.

[0052] In this embodiment, in order to protect the health of the user's teeth or gums, during the process of brushing teeth, the user presses the brush head 150 harder, and the bracket assembly 130 contacts the pressure sensor 142 harder, according to the lever principle mentioned above. When the bracket assembly 130 contacts the pressure sensor 142 with a force that exceeds a second preset value, the pressure sensor 142 transmits an alarm signal to the controller 141, and the controller 141 controls the prompter to send a prompt message to remind the user to reduce the force. The first preset value should be less than the second preset value. In this embodiment, the prompt message can be a flashing light, regular vibration, or any other information that can serve as a prompt.

[0053] In the embodiments of the present invention, please refer to Figure 1 and Figure 3 The pressure feedback device 143 includes a fixing ring 1431 and a light emitting member 1432 . The light emitting member 1432 is mounted on the fixing ring 1431 and is electrically connected to the controller 141 . The fixing ring 1431 is located in the accommodating cavity 110 a and on a side of the motor 121 close to the transmission shaft 122 .

[0054] In this embodiment, the light-emitting element 1432 is used to light up to remind the user to reduce the intensity of brushing. When the user brushes too hard, the brush head 150 drives the bracket away from the end of the transmission shaft 122 to press the pressure sensor 142, so that the pressure sensor 142 senses a pressure greater than the second preset value. The pressure sensor 142 transmits the signal to the controller 141, and the controller 141 controls the light-emitting element 1432 to flash, and the light source is transmitted to the user's eyes through the housing 110 to remind the user to reduce the intensity. It can be understood that the corresponding light-emitting part of the housing 110 can be made of a light-transmitting material so that the light source can be better transmitted.

[0055] It should be noted that in some usage scenarios, users cannot see the light, such as the special blind group. In this case, you can consider replacing the prompter with a vibration reminder. When the pressure is too large, change the vibration mode of the electric toothbrush 100 to remind the user to reduce the pressure; you can also set a buzzer in the shell 110 to use sound for reminders. There is no limitation here, and the solution is based on whether it can convey the prompt information to the user.

[0056] In the embodiments of the present invention, please refer to Figure 1 and Figure 2 The bracket assembly 130 includes a first bracket 131, and the motor 121 is installed in the first bracket 131. An abutment portion 1311 is provided on the outside of one end of the first bracket 131 away from the transmission shaft 122. The abutment portion 1311 is provided with a push rod 1312. A rib protrusion 1313 is provided at one end of the push rod 1312. The rib protrusion 1313 is used to abut against the pressure sensor 142.

[0057] In this embodiment, in order to ensure that the push rod 1312 can apply a second pressure to the pressure sensor 142, a rib protrusion 1313 is provided to abut against the pressure sensor 142. Specifically, the rib protrusion 1313 has protrusions that cross horizontally and vertically to form a cross-shaped protrusion to ensure that when the brush head 150 is squeezed against the teeth at different angles, the first pressure generated drives the push rod 1312 to generate a second pressure on the pressure sensor 142, and the pressure direction can always be received by the pressure sensor 142.

[0058] It should be noted that the support assembly 130 needs to be able to swing slightly in the housing 110. In order to solve this problem, in one embodiment of the utility model, the support assembly 130 includes a first support 131 and a second support 132. The second support 132 is fixedly connected to the housing 110, and the first support 131 is movably installed in the second support 132. The end of the second support 132 close to the brush head 150 is provided with a circular groove 132a, and the end of the first support 131 close to the transmission shaft 122 is provided with a swinging member 1315. The swinging member 131 5 is hinged in the circular groove 132a, and the swinging member 1315 serves as the fulcrum for the swing of the first bracket 131. When the user applies a first pressure to the brush head 150, the transmission shaft 122 swings in one direction around the swinging member 1315. According to the lever principle, the end of the first bracket 131 away from the transmission shaft 122 rotates in the opposite direction of the above direction around the swinging member 1315. One end of the first bracket 131 applies a second pressure to the pressure sensor 142. According to the magnitude of the second pressure, the pressure sensor 142 transmits a corresponding signal to the controller 141.

[0059] In the embodiments of the present invention, please refer to Figure 2 The abutment portion 1311 is provided with a positioning column 1314, and the positioning column 1314 is located on the side of the push rod 1312 away from the transmission shaft 122. An elastic member 133 is provided on the outer sleeve of the positioning column 1314. One end of the elastic member 133 abuts against the abutment portion 1311, and the other end abuts against the inner wall of the shell 110.

[0060] In this embodiment, in order to keep the push rod 1312 and the pressure sensor 142 in the initial state after the toothbrushing is completed, that is, the push rod 1312 does not apply the second pressure to the pressure sensor 142, an elastic member 133 is provided to rebound the abutment portion 1311, so that the push rod 1312 returns to the initial state. Further, in order to prevent the elastic member 133 from being offset relative to the abutment portion 1311 and thus failing to rebound, a positioning column 1314 is provided on the abutment portion 1311, and the elastic member 133 is sleeved on the positioning column 1314 to constrain the displacement of the elastic member 133. It should be noted that the use of a spring is a preferred solution in the above embodiments. In other embodiments of the utility model, other elastic metal members such as washers, bending sheets, contact sheets, etc. can be selected.

[0061] In the embodiments of the present invention, please refer to Figure 5 and Figure 6 The control component 140 also includes a capacitive sensor 144 arranged on the controller 141. A receiving groove 144a is provided on the side of the capacitive sensor 144 close to the controller 141. The pressure sensor is located in the receiving groove 144a. The bracket component 130 swings and applies a second pressure corresponding to the first pressure to the capacitive sensor 144 at one end away from the transmission shaft 122, so that the capacitive sensor 144 is deformed and applies a second pressure to the pressure sensor 142.

[0062] In order to improve the sensitivity of the pressure sensor 142, a capacitive sensor 144 is provided on the circuit board. In this embodiment, the capacitive sensor 144 is conductive silicone rubber, and the motor 121 bracket contacts the conductive silicone rubber, so that the conductive silicone rubber is deformed and contacts the pressure sensor 142, so that the user can trigger the capacitive sensor 144 and the pressure sensor 142 simultaneously when pressing the brush head 150 once.

[0063] It should be noted that, in some embodiments, the controller 141 is a circuit board, and the capacitive sensor 144 and the pressure sensor 142 are both located on the circuit board.

[0064] In the embodiments of the present invention, please refer to Figure 5 and Figure 6 A protrusion 1441 is provided on one side of the capacitive sensor 144 close to the controller 141 . The protrusion 1441 is located in the receiving groove 144 a and abuts against the pressure sensor 142 .

[0065] In this embodiment, in order to make the capacitor sensor 144 and the pressure sensor 142 contact better, the capacitor sensor 144 is provided with a protrusion 1441 that abuts against the pressure sensor 142 to reduce the distance between the capacitor sensor 144 and the pressure sensor 142. It should be noted that there is a certain gap between the pressure sensor 142 and the capacitor sensor 144, and the protrusion 1441 is located in the gap, so that the protrusion 1441 has a certain deformation space to avoid the capacitor sensor 144 and the pressure sensor 142 from having too large a contact area. When the contact force is too large, one or both of them are damaged. In one embodiment, the center of the protrusion 1441 corresponds to the center of the pressure sensor 142. This arrangement ensures that the motor 121 bracket can trigger the capacitor sensor 144 and the pressure sensor 142 at the same time by pressing once.

[0066] In the embodiments of the present invention, please refer to Figure 5 and Figure 6A through hole 141 a is formed through the controller 141 . The through hole 141 a is located on a side of the pressure sensor 142 away from the capacitive sensor 144 . Two opposite ends of the pressure sensor 142 are connected to the edge of the through hole 141 a .

[0067] In this embodiment, a through hole 141a is provided on the circuit board, and the through hole 141a is used to provide a deformation space for the pressure sensor 142, and the upper and lower ends of the pressure sensor 142 are respectively welded at the upper and lower edges of the through hole 141a, thereby further improving the sensitivity of the pressure sensor 142.

[0068] In the embodiments of the present invention, please refer to Figure 5 and Figure 6 The controller 141 is provided with a mounting hole 141 b , and the mounting hole 141 b is distributed along the outer edge of the through hole 141 a . The capacitive sensor 144 is at least partially located in the mounting hole 141 b and connected to the controller 141 .

[0069] In this embodiment, in order to avoid the problem that the capacitive sensor 144 is offset relative to the circuit board and causes the capacitive sensor 144 to fail, a portion of the capacitive sensor 144 is penetrated or set in the mounting hole 141b and bonded to the hole wall of the mounting hole 141b by glue to constrain the capacitive sensor 144 on the circuit board.

[0070] The above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the utility model.

Claims

1. An electric toothbrush, characterized in that: Comprising: A housing having a receiving cavity; A motor assembly including a motor, a transmission shaft, and a bracket assembly. One end of the transmission shaft is connected to the motor, and the other end extends out of the receiving cavity for connection to a brush head. The motor is installed within the bracket assembly and is used to drive the transmission shaft to swing, so as to drive the brush head to swing; and, A control assembly including a controller and a pressure sensor disposed within the receiving cavity. The bracket assembly is swingably disposed within the receiving cavity such that when the transmission shaft and / or the brush head outside the receiving cavity is subjected to a first pressure, the bracket assembly swings and the end away from the transmission shaft applies a second pressure corresponding to the first pressure to the pressure sensor. The pressure sensor receives the second pressure and outputs a trigger signal. When the second pressure is greater than a first preset value, the controller receives the trigger signal and controls the motor to turn on, so that the electric toothbrush is in a powered-on state.

2. The electric toothbrush according to claim 1, characterized in that The bracket assembly includes a first bracket and a second bracket. The motor is installed within the first bracket. The second bracket is located within the receiving cavity and is connected to the housing. A swinging member is provided on one side of the first bracket close to the second bracket. A circular groove is provided on one side of the second bracket close to the first bracket. The swinging member is hinged within the circular groove, so that the first bracket is swingably disposed within the receiving cavity; When the electric toothbrush is in a powered-on state, the pressure sensor receives the second pressure and outputs an adjustment signal. The controller receives the adjustment signal and controls the motor to output a corresponding operating power. The operating power includes a first power W1 and a second power W2, where W1 < W2. After staying at the corresponding operating power for a preset duration, the controller determines the operating power, so that the electric toothbrush is in a corresponding operating state.

3. The electric toothbrush according to claim 2, characterized in that The control assembly further includes a pressure feedback device electrically connected to the controller; When the electric toothbrush is in an operating state, when the second pressure is greater than a second preset value, the pressure sensor receives the second pressure and outputs an alarm signal. The controller receives the alarm signal and controls the pressure feedback device to emit a prompt message.

4. The electric toothbrush according to claim 3, characterized in that The pressure feedback device includes a fixing ring and a light-emitting member. The light-emitting member is installed on the fixing ring and is electrically connected to the controller. The fixing ring is located within the receiving cavity and on the side of the motor close to the transmission shaft.

5. The electric toothbrush according to claim 1, characterized in that The bracket assembly includes a first bracket. The motor is installed within the first bracket. An abutting portion is provided outside one end of the first bracket away from the transmission shaft. A push rod is provided on the abutting portion. A ribbed protrusion is provided at one end of the push rod. The ribbed protrusion is used to abut against the pressure sensor.

6. The electric toothbrush according to claim 5, characterized in that The abutting portion is provided with a positioning post. The positioning post is located on the side of the push rod away from the transmission shaft. An elastic member is sleeved outside the positioning post. One end of the elastic member abuts against the abutting portion, and the other end abuts against the inner wall of the housing.

7. The electric toothbrush according to any one of claims 1 to 6, characterized in that: The control component also includes a capacitive sensor arranged on the controller, and a receiving groove is provided on a side of the capacitive sensor close to the controller. The pressure sensor is located in the receiving groove, and the bracket assembly swings and applies the second pressure corresponding to the first pressure to the capacitive sensor at one end away from the transmission shaft, so that the capacitive sensor is deformed and the second pressure is applied to the pressure sensor.

8. The electric toothbrush according to claim 7, characterized in that A protrusion is provided on one side of the capacitive sensor close to the controller, and the protrusion is located in the accommodating groove and abuts against the pressure sensor.

9. The electric toothbrush according to claim 7, characterized in that A through hole is formed through the controller, and the through hole is located at a side of the pressure sensor away from the capacitive sensor, and opposite ends of the pressure sensor are connected to the edge of the through hole.

10. The electric toothbrush according to claim 9, characterized in that The controller is provided with mounting holes, and the mounting holes are distributed along the outer edge of the through hole. The capacitive sensor is at least partially located in the mounting holes and connected to the controller.

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