CN209518944U - 3D Ultrasonic Electric Rinseable Toothbrush - Google Patents

Abstract

A 3D ultrasonic electric flushable toothbrush, comprising: a brush handle, a negative pressure suction interface, a water inlet pipe, a swing motor, a connection part, a brush head, a bristle assembly, an ultrasonic generator and a controller, and the swing motor is arranged adjacent to the installation hole; the connection part One end passes through the mounting hole and is connected to the swing shaft of the swing motor, which drives the connecting part to swing back and forth; the ultrasonic generator is set on the side wall of the accommodating cavity; the controller is set on the side wall of the mounting cavity, Both the ultrasonic generator and the swing motor are electrically connected to the controller. The above-mentioned 3D ultrasonic electric rinsable toothbrush can improve the effect of cleaning the oral cavity due to the arrangement of the ultrasonic generator. Compared with some existing cleaning methods in which motors drive the bristles to rotate and cause greater friction and damage to the teeth, the above-mentioned 3D ultrasonic electric flushable toothbrush uses a swing motor to drive the bristles to swing up and down to clean the teeth, which is closer to The scientific way of brushing your teeth will cause less damage to your teeth.

Description

3D Ultrasonic Electric Rinseable Toothbrush

technical field

The utility model relates to the technical field of oral care, in particular to a 3D ultrasonic electric flushable toothbrush.

Background technique

Along with the continuous development of science and technology, electric toothbrush has occurred on the market at present. Compared with traditional common toothbrushes, this type of toothbrush has a motor that drives the bristles to rotate or shake, so as to control the brushing of the teeth by the bristles. However, in the ICU ward of a hospital, a patient's oral cavity usually requires nursing staff to take care of it. Every oral cavity care, such as brushing teeth and cleaning care, usually needs to assist the patient in the operation process of absorbing water, brushing teeth, and spitting water. ICU patients usually have weak consciousness, which makes the existing ICU oral care extremely inconvenient. Existing electric toothbrushes can only replace the action of brushing teeth, and cannot complete the operations of water absorption and water discharge. Therefore, need to develop a kind of electric toothbrush that is applicable to ICU patient's oral cavity cleaning care. In addition, the existing electric toothbrushes have poor cleaning effect and are difficult to touch some parts of the teeth.

Utility model content

Based on this, it is necessary to provide a 3D ultrasonic electric rinsable toothbrush that can have water discharge function and water absorption function, can be suitable for oral cleaning care of ICU patients, and has better cleaning effect.

A 3D ultrasonic electric rinsable toothbrush, comprising: a brush handle, a negative pressure suction interface, a water inlet pipe, a swing motor, a connection part, a brush head, a bristle assembly, an ultrasonic generator and a controller, and the brush handle has a hollow installation cavity , an installation hole and a suction through hole; the installation hole communicates with the installation cavity; the negative pressure suction interface is connected to the brush handle, and one end of the negative pressure suction interface communicates with the suction through hole; The water inlet pipe is connected to the brush handle, and one end of the water inlet pipe is connected to the suction through hole; the swing motor is arranged on the side wall of the installation cavity, and the swing motor is adjacent to the installation hole setting; one end of the connecting part passes through the mounting hole and connects to the swing shaft of the swing motor, and the swing shaft of the swing motor drives the connecting part to swing back and forth; a connecting channel is opened in the connecting part, so that The connecting channel communicates with the suction through hole; the brush head is connected to the end of the connecting part away from the swing shaft, and the outer wall of the brush head is provided with a number of suction ports, and the suction ports are connected to the The connecting channel is connected; the brush head has a hollow accommodating cavity; the bristle assembly includes a number of bristles, and a number of bristles are arranged on the upper end surface of the brush head; the ultrasonic generator is arranged on the The side wall of the accommodating cavity; the controller is arranged on the side wall of the installation cavity, and both the ultrasonic generator and the swing motor are electrically connected to the controller. As another example, the 3D ultrasonic electric rinsable toothbrush is a 3D ultrasonic electric rinsable toothbrush. As another example, the 3D ultrasonic electric rinsable toothbrush is an electric toothbrush. As another example, the 3D ultrasonic electric rinsable toothbrush is an ultrasonic electric rinsable toothbrush. As another example, the 3D ultrasonic electric flushable toothbrush is an electric flushable toothbrush.

In one of the embodiments, the 3D ultrasonic electric rinsable toothbrush further includes a control switch, the control switch is arranged on the handle, the control switch is electrically connected to the controller, and the control switch is used to pass A controller controls the ultrasonic generator and the swing motor respectively.

In one of the embodiments, the 3D ultrasonic electric rinsable toothbrush further includes a battery, the battery is arranged on the side wall of the installation cavity, and the battery is electrically connected to the controller.

In one embodiment, the battery is a lithium ion battery.

In one of the embodiments, the brush handle is further provided with a charging interface, and the charging interface is electrically connected to the controller.

In one of the embodiments, the charging interface is a Micro USB interface or Micro USB.

In one of the embodiments, the brush handle is further provided with a negative pressure control hole, and the negative pressure control hole communicates with the suction through hole.

In one of the embodiments, the shape of the opening of the negative pressure control hole away from the installation cavity matches the shape of a preset finger.

In one embodiment, the water inlet pipe communicates with the suction through hole through a solenoid valve, and the solenoid valve is electrically connected to the controller.

The above-mentioned 3D ultrasonic electric flushable toothbrush, by setting an ultrasonic generator, makes the 3D ultrasonic electric electric flushable toothbrush have a certain ultrasonic cleaning function. The ultrasonic wave can deeply clean the hard-to-reach parts of the teeth, and effectively remove dental plaque, tartar and phlegm scab. By setting the swing motor, the swing shaft of the swing motor drives the brush head to swing up and down through the connecting part, so as to simulate the way of brushing teeth up and down during the tooth brushing process, so that the bristles on the brush head have the effect of cleaning teeth. By setting the water inlet pipe, the water inlet pipe is used to connect the external water pipe, and the water can be discharged through the suction port of the brush head, so as to facilitate the cleaning of the patient's oral cavity. By setting a negative pressure trachea interface to connect to an external negative pressure suction device, the water in the patient's mouth can be sucked away through the suction port of the brush head, so that the 3D ultrasonic electric flushable toothbrush has both water discharge and water absorption functions, and can It is suitable for cleaning and nursing the oral cavity of ICU patients. Since the ultrasonic generator is installed, it can also improve the cleaning effect on the oral cavity. In addition, compared with some existing cleaning methods in which motors drive the bristles to rotate and cause greater friction and damage to the teeth, the above-mentioned 3D ultrasonic electric flushable toothbrush uses a swing motor to drive the bristles to swing up and down to clean the teeth. It is closer to the scientific way of brushing teeth and less damage to teeth.

Description of drawings

Fig. 1 is a schematic structural view of a 3D ultrasonic electric flushable toothbrush according to an embodiment of the present invention;

Fig. 2 is a structural schematic diagram of another angle of a 3D ultrasonic electric flushable toothbrush according to an embodiment of the present invention;

Fig. 3 is a structural schematic diagram of another angle of the 3D ultrasonic electric flushable toothbrush according to an embodiment of the present invention;

Fig. 4 is a sectional view along line A-A of Fig. 3;

FIG. 5 is an enlarged view of B in FIG. 4 .

Detailed ways

In order to facilitate the understanding of the utility model, and to make the above-mentioned purpose, features and advantages of the utility model more obvious and easy to understand, the specific implementation of the utility model will be described in detail below in conjunction with the accompanying drawings. In the following description, a lot of specific details are set forth in order to fully understand the utility model, and preferred embodiments of the utility model are given in the accompanying drawings. However, the invention may be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present utility model more thorough and comprehensive. The utility model can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below . In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the present utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined. In the description of the present utility model, "several" means at least one, such as one, two, etc., unless otherwise specifically defined. It should be noted that when an element is referred to as being “fixed” to another element, it can be directly on the other element or there can also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and similar expressions are used herein for purposes of illustration only and are not intended to represent the only embodiments. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of this invention. The terms used herein are only for the purpose of describing specific embodiments, and are not intended to limit the present utility model. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

For example, a 3D ultrasonic electric rinsable toothbrush includes: a brush handle, a negative pressure suction interface, a water inlet pipe, a swing motor, a connection part, a brush head, a bristle assembly, an ultrasonic generator and a controller, and the brush handle has a hollow Installation cavity, installation hole and suction through hole; the installation hole communicates with the installation cavity; the negative pressure suction interface is connected to the brush handle, and one end of the negative pressure suction interface communicates with the suction through hole ; the water inlet pipe is connected to the brush handle, and one end of the water inlet pipe communicates with the suction through hole; the swing motor is arranged on the side wall of the installation cavity, and the swing motor is adjacent to the The installation hole is provided; one end of the connection part passes through the installation hole and is connected to the swing shaft of the swing motor, and the swing shaft of the swing motor drives the connection part to swing back and forth; a connection channel is opened in the connection part , the connecting channel communicates with the suction through hole; the brush head is connected to one end of the connection part away from the swing shaft, and the outer wall of the brush head is provided with a number of suction ports, and the suction port It communicates with the connecting channel; the brush head has a hollow accommodating cavity; the bristle assembly includes a number of bristles, and a number of bristles are arranged on the upper end surface of the brush head; the ultrasonic generator is set on the side wall of the accommodating cavity; the controller is arranged on the side wall of the installation cavity, and both the ultrasonic generator and the swing motor are electrically connected to the controller. As another example, the 3D ultrasonic electric rinsable toothbrush is a 3D ultrasonic electric rinsable toothbrush. As another example, the 3D ultrasonic electric rinsable toothbrush is an electric toothbrush. As another example, the 3D ultrasonic electric rinsable toothbrush is an ultrasonic electric rinsable toothbrush. As another example, the 3D ultrasonic electric flushable toothbrush is an electric flushable toothbrush.

In order to further illustrate the above-mentioned 3D ultrasonic electric flushable toothbrush, another example is, please refer to FIGS. , the connection part 150, the brush head 160, the bristle assembly 170, the ultrasonic generator 180 and the controller 190. The brush handle 110 has a hollow installation cavity 111 , an installation hole 112 and a suction through hole 113 ; the installation hole 112 communicates with the installation cavity 111 . The installation cavity is used for installing and accommodating the swing motor and the controller. The suction through hole 113 is used as a water flow channel and a negative pressure water suction channel. The negative pressure suction port 120 is connected to the brush handle 110, and one end of the negative pressure suction port 120 is connected to the suction through hole 113; the other end of the negative pressure suction port 120 is used to communicate with a negative pressure device. The water inlet pipe 130 is connected to the brush handle 110, and one end of the water inlet pipe 110 is connected to the suction through hole 113; the other end of the water inlet pipe 110 is used for connecting an external water pipe. The swing motor 140 is arranged on the side wall of the installation cavity 111, and the swing motor 140 is arranged adjacent to the installation hole 112; one end of the connecting part 150 passes through the installation hole 112 and is connected to the swing shaft 141 of the swing motor 140, and the swing shaft 141 of the swing motor 140 The connecting part 150 is driven to swing back and forth; the connecting part 150 is provided with a connecting channel 151, and the connecting channel 151 is connected to the suction through hole 113; A plurality of suction ports 161 are opened, and the suction ports 161 communicate with the connecting channel 151 ; the brush head 160 has a hollow accommodating cavity 162 . The bristle assembly 170 includes a plurality of bristles 171, which are all arranged on the upper surface of the brush head 160; the plurality of bristles are used to clean the patient's oral cavity. In another example, the bristles are soft bristles. The ultrasonic generator 180 is disposed on the side wall of the accommodating cavity 162 ; the controller 190 is disposed on the side wall of the installation cavity 111 , and the ultrasonic generator 180 and the swing motor 140 are both electrically connected to the controller. The controller is used to control the ultrasonic generator and the swing motor respectively.

The suction port 161 is used for water outlet and water absorption. The water from the external water pipe flows through the water inlet pipe 130, the suction through hole 113, and the connecting channel 151 in turn, and then flows out from the water outlet. In this way, it can pass through the suction port of the brush head. 161 water, so as to facilitate the cleaning of the patient's mouth. When the water in the patient's mouth needs to be sucked, the external negative pressure device is controlled to generate negative pressure suction, so that the water in the patient's mouth passes through the suction port 161, the connecting channel 151, the suction through hole 113 and the negative pressure suction interface 120 Then it is sucked away by the negative pressure device. Of course, when the negative pressure device is in use, the channel of the water inlet pipe 130 needs to be closed. In this way, the 3D ultrasonic electric rinsable toothbrush has both water discharge function and water absorption function, and can be suitable for oral cleaning and care of ICU patients. It should be noted that the water in the external water pipe can be controlled to flow out of the water outlet by controlling the external water pipe, for example, by controlling the faucet or switch of the external water pipe. Another example is to control the suction of water from the patient's oral cavity by controlling the external negative pressure suction device.

In practical application, the swing shaft 141 of the swing motor 140 drives the brush head 160 to swing up and down through the connection part 150, so that the bristle assembly 170 on the brush head 160 simulates the way of brushing teeth up and down, so as to reduce the loss of teeth. Since the ultrasonic generator 180 is arranged on the side wall of the accommodating cavity 162 of the brush head 160, the ultrasonic waves generated by it can have a good cleaning effect on the teeth, and the ultrasonic waves can deeply clean the hard-to-reach parts of the teeth and effectively remove dental bacteria. Plaque, tartar and phlegm scab.

The above-mentioned 3D ultrasonic electric flushable toothbrush, by setting the ultrasonic generator 180, makes the 3D ultrasonic electric flushable toothbrush have a certain ultrasonic cleaning function, and the ultrasonic wave can deeply clean the hard-to-reach parts of the teeth, effectively removing plaque, tartar and phlegm . By setting the swing motor 140, the swing shaft 141 of the swing motor 140 drives the brush head 160 to swing up and down through the connecting part 150, so as to simulate the brushing up and down during tooth brushing, so that the bristles on the brush head have the effect of cleaning teeth. By setting the water inlet pipe 130, the water inlet pipe 130 is used to connect the external water pipe, and the water can be discharged through the suction port 161 of the brush head 160, so as to facilitate cleaning of the patient's oral cavity. By setting the negative pressure tracheal interface 120 for connecting to an external negative pressure suction device, the water in the patient's oral cavity can be sucked away through the suction port 161 of the brush head 160, so that the 3D ultrasonic electric flushable toothbrush has the function of water discharge and water absorption at the same time Function, can be applicable to the oral cavity cleaning care of ICU patient, because the ultrasonic generator 180 is arranged, can also improve the cleaning effect to oral cavity. In addition, compared with some existing cleaning methods in which the motor drives the bristles to rotate, causing greater friction and damage to the teeth, the above-mentioned 3D ultrasonic electric flushable toothbrush uses a swinging motor 140 to drive the bristles to swing up and down to clean the teeth , which is closer to the scientific way of brushing teeth, less damage to teeth.

It should be noted that, in practical applications, the suction port 161 can also be provided at multiple positions of the brush head 160, for example, the suction port 161 can also be provided on the upper end surface of the brush head on which the bristles are installed, or the brush head is opposite to the upper surface. the other side of the end face. When the suction port is arranged on the outer wall of the brush head, it is preferable to set the position of the suction port on the outer wall of the brush head adjacent to the side of the bristles. Of course, those skilled in the art can flexibly select the shape and quantity of the suction ports in the present application, such as square, circular, arc, polygon, or multiple shapes at the same time. It should be understood that the above all fall within the protection scope of the present utility model.

In one of the embodiments, please refer to Fig. 1 and Fig. 5, the 3D ultrasonic electric rinsable toothbrush also includes a control switch 200, the control switch 200 is arranged on the brush handle 110, and the control switch 200 is electrically connected to the The controller 180 , the control switch 200 is used to respectively control the ultrasonic generator 180 and the swing motor 140 through the controller 180 . In this way, the ultrasonic generator 180 and the swing motor 140 can be turned on and off better through the control switch.

In one embodiment, the 3D ultrasonic electric rinsable toothbrush further includes a battery 210 disposed on the side wall of the installation cavity 111 , and the battery 210 is electrically connected to the controller 190 . The battery is used to supply power to the controller, and further supplies power to the ultrasonic generator and the swing motor respectively through the controller. For example, the battery is a Li-ion battery or a Ni-MH battery. In this way, the battery can be recharged cyclically. Preferably, the battery is a lithium ion battery. In this way, the battery can be recharged cyclically. In one embodiment, the brush handle 110 is further provided with a charging interface 114 , and the charging interface 114 is connected to the controller 190 . In other words, the charging interface is electrically connected to the battery 210 through the controller 190 . In this way, the battery can be better charged through the charging interface 114 . In one of the embodiments, the charging interface is a Micro USB interface or Micro USB. In this way, the adaptability is good, and it is convenient for users to charge.

In one embodiment, the brush handle 110 is further provided with a negative pressure control hole 115 , and the negative pressure control hole 115 communicates with the suction through hole 113 . In another example, the shape of the opening of the negative pressure control hole away from the installation cavity matches the shape of a preset finger. In another example, the preset finger is the shape of the average finger of the surveyed personnel. In another example, the preset finger is the shape of the average index finger or middle finger of the surveyed personnel. In another example, the preset finger is the shape of the average index finger or middle finger of the nurses after investigation. In this way, when the external negative pressure suction device is turned on, when the water does not need to be sucked away from the patient's mouth, the water suction port can be more difficult to be sucked away by releasing or not pressing the negative pressure control hole with the fingers. It can be understood that the suction force of the negative pressure suction device is released to a certain extent from the negative pressure control hole, thereby weakening the suction force acting on the water suction port. And when needing to suck away water from patient's oral cavity, then can make the water suction mouth absorb the water of patient's oral cavity by pressing negative pressure control hole.

In one embodiment, the water inlet pipe communicates with the suction through hole through a solenoid valve, and the solenoid valve is electrically connected to the controller. In this way, the water outlet action of the water outlet can be controlled by controlling the solenoid valve. Of course, it should be noted that when the solenoid valve is set, the external water pipe should be in an open state. In another example, the solenoid valve is electrically connected to the controller. The controller is also used to control the solenoid valve. As another example, the brush handle is further provided with a water inlet switch, and the water inlet switch is electrically connected to the controller. The water inlet switch is used to control the opening and closing of the electromagnetic valve.

The above-mentioned 3D ultrasonic electric flushable toothbrush, by setting an ultrasonic generator, makes the 3D ultrasonic electric electric flushable toothbrush have a certain ultrasonic cleaning function. The ultrasonic wave can deeply clean the hard-to-reach parts of the teeth, and effectively remove dental plaque, tartar and phlegm scab. By setting the swing motor, the swing shaft of the swing motor drives the brush head to swing up and down through the connecting part, so as to simulate the way of brushing teeth up and down during the tooth brushing process, so that the bristles on the brush head have the effect of cleaning teeth. By setting the water inlet pipe, the water inlet pipe is used to connect the external water pipe, and the water can be discharged through the suction port of the brush head, so as to facilitate the cleaning of the patient's oral cavity. By setting a negative pressure trachea interface to connect to an external negative pressure suction device, the water in the patient's mouth can be sucked away through the suction port of the brush head, so that the 3D ultrasonic electric flushable toothbrush has both water discharge and water absorption functions, and can It is suitable for cleaning and nursing the oral cavity of ICU patients. Since the ultrasonic generator is installed, it can also improve the cleaning effect on the oral cavity. In addition, compared with some existing cleaning methods in which motors drive the bristles to rotate and cause greater friction and damage to the teeth, the above-mentioned 3D ultrasonic electric flushable toothbrush uses a swing motor to drive the bristles to swing up and down to clean the teeth. It is closer to the scientific way of brushing teeth and less damage to teeth.

In one embodiment, the ultrasonic generator is a levitation motor.

It should be noted that, for example, this toothbrush is used for oral care of adult patients in ICU. It vibrates at high speed with its suspension motor, which generates sound waves as energy to drive the vibration of the toothbrush head, which can penetrate deep into the hard-to-reach parts of the teeth and effectively remove dental plaque, tartar, and phlegm scabs. There are flushable and negative pressure water suction devices on the back of the toothbrush. It can be repeated many times, rinse and attract as needed to effectively absorb the oral rinse and saliva, and achieve the effect of thoroughly cleaning the oral cavity. The middle part of the bristles is equipped with a vibration motor with an up and down vibration device, which can effectively remove tartar and dental bacteria between teeth. The bristles are soft and effectively protect the tooth enamel. Nurses are easy to operate, shorten the time of oral care, clean the patient's mouth, and effectively improve the quality of oral care. Because of its simple operation, convenience and safety, conscious patients can use it by themselves. When using it by yourself, you can not connect the negative pressure flushing device and use mouthwash instead. The toothbrush head is waterproof.

The technical features of the above-mentioned embodiments can be combined arbitrarily. To make the description concise, all possible combinations of the technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, should be considered as within the scope of this specification. It should be noted that "in an embodiment", "for example", "another example" and the like in the present application are intended to illustrate the present application rather than limit the present application. The above-mentioned embodiments only express several implementation modes of the utility model, and the description thereof is relatively specific and detailed, but it should not be interpreted as a limitation on the patent scope of the utility model. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the scope of protection of the utility model patent should be based on the appended claims.

Claims (9)

1. A 3D ultrasonic electric rinsable toothbrush, characterized in that it comprises: A brush handle, the brush handle has a hollow installation cavity, an installation hole and a suction through hole; the installation hole communicates with the installation cavity; A negative pressure suction interface, the negative pressure suction interface is connected to the brush handle, and one end of the negative pressure suction interface communicates with the suction through hole; a water inlet pipe, the water inlet pipe is connected to the brush handle, and one end of the water inlet pipe communicates with the suction through hole; a swing motor, the swing motor is arranged on the side wall of the installation cavity, and the swing motor is arranged adjacent to the installation hole; A connection part, one end of the connection part passes through the installation hole and is connected to the swing shaft of the swing motor, and the swing shaft of the swing motor drives the connection part to swing back and forth; a connection channel is opened in the connection part, The connection channel communicates with the suction through hole; A brush head, the brush head is connected to one end of the connecting part away from the swing shaft, and a plurality of suction ports are opened on the outer wall of the brush head, and the suction ports communicate with the connecting channel; The brush head has a hollow accommodating cavity; A bristle assembly, the bristle assembly includes a number of bristles, and a number of bristles are all arranged on the upper end surface of the brush head; an ultrasonic generator, the ultrasonic generator is arranged on the side wall of the accommodating cavity; A controller, the controller is arranged on the side wall of the installation cavity, and both the ultrasonic generator and the swing motor are electrically connected to the controller. 2. The 3D ultrasonic electric rinsable toothbrush according to claim 1, characterized in that, the 3D ultrasonic electric rinsable toothbrush also includes a control switch, the control switch is arranged on the brush handle, and the control switch is electrically The controller is connected, and the control switch is used to respectively control the ultrasonic generator and the swing motor through the controller. 3. The 3D ultrasonic electric flushable toothbrush according to claim 1, characterized in that, the 3D ultrasonic electric flushable toothbrush also includes a battery, and the battery is arranged on the side wall of the installation cavity, and the battery electric Connect the controller. 4. The 3D ultrasonic electric rinsable toothbrush according to claim 3, wherein the battery is a lithium-ion battery. 5. The 3D ultrasonic electric rinsable toothbrush according to claim 4, characterized in that, the handle is also provided with a charging interface, and the charging interface is electrically connected to the controller. 6. The 3D ultrasonic electric rinsable toothbrush according to claim 5, wherein the charging interface is a MicroUSB interface or a Micro USB. 7. The 3D ultrasonic electric rinsable toothbrush according to claim 1, wherein a negative pressure control hole is provided on the brush handle, and the negative pressure control hole communicates with the suction through hole. 8. The 3D ultrasonic electric rinsable toothbrush according to claim 7, characterized in that the shape of the opening of the negative pressure control hole away from the installation cavity matches the shape of a preset finger. 9. The 3D ultrasonic electric rinsable toothbrush according to claim 1, wherein the water inlet pipe communicates with the suction through hole through a solenoid valve, and the solenoid valve is electrically connected to the controller.