WO2022037620A1

WO2022037620A1 - Electric tooth cleaning device

Info

Publication number: WO2022037620A1
Application number: PCT/CN2021/113297
Authority: WO
Inventors: 蒋思琪
Original assignee: 蒋思琪; 深圳市唯力电子科技有限公司
Priority date: 2020-08-18
Filing date: 2021-08-18
Publication date: 2022-02-24
Also published as: CN112022404A

Abstract

Disclosed is an electric tooth cleaning device, comprising a handle (1) and a cleaning head (2) detachably connected to the handle (1). The handle (1) is internally provided with a driving unit, a fluid conveying unit (13) and a control unit (12), wherein the driving unit comprises an electric motor (11), and a shaft (111) of the electric motor (11) is hollow. The hollow shaft (111) of the electric motor is used for arranging a liquid conveying system, the limited space in the handle (1) of an electric toothbrush is rationally utilized, such that the two functions of tooth brushing and tooth washing are achieved.

Description

An electric tooth cleaning device

This application claims the priority of the Chinese Patent Application No. 202010834747.2 and entitled "An Electric Tooth Cleaning Device" filed with the China Patent Office on August 18, 2020, the entire contents of which are incorporated herein by reference.

technical field

The present invention relates to the technical field of daily necessities, in particular to an electric tooth cleaning device.

Background technique

Compared with ordinary toothbrushes, electric toothbrushes can more thoroughly remove plaque and reduce oral diseases such as gingivitis, periodontal disease and bleeding gums. Electric toothbrushes generally generate high-frequency motion of the brush head through the rapid rotation or vibration of the motor core, and instantly decompose the toothpaste into fine foam, which penetrates into the cleaning teeth; Tissue can be massaged.

Dentists pointed out that brushing mainly solves the problem of cleaning the surface of the teeth that can be touched by the toothbrush. For the cleaning of the tooth surface on both sides of the interdental space, especially the cleaning of the more important gingival sulcus, other dental care has to be relied on. Supplies such as dental floss or a toothbrush.

The existing electric toothbrush generally only has the function of brushing teeth, which makes the average family need to buy an electric toothbrush and a toothbrush at the same time in order to take better care of their teeth, which needs to take up extra space, and also increases the dental care process. the complexity.

SUMMARY OF THE INVENTION

In order to make up for the deficiencies of the prior art, the present invention provides an electric tooth cleaning device, which utilizes a hollow motor shaft to arrange a liquid delivery system, rationally utilizes the limited space in the handle of the electric toothbrush, and realizes both tooth brushing and tooth cleaning. Function. Further, the cleaning head of the electric tooth cleaning device includes a brush head and a spray head, and the brush head and the spray head are not used at the same time. When using the brush head as the cleaning head of the electric tooth cleaning device, it can be The function of brushing teeth is realized through the cooperation of the driving unit and the control unit, and further, the liquid toothpaste stored in the toothpaste storage can be delivered to the brush head through the fluid delivery unit before or during brushing; When the nozzle is used as the cleaning head of the electric tooth cleaning device, the function of tooth cleaning can be realized through the cooperation of the driving unit, the fluid conveying unit and the control unit, and further, by adjusting the control unit, the intensity of the tooth cleaning can also be adjusted. Such a design enables the electric tooth cleaning device to both brush and wash teeth, saves the space required for placing the electric tooth cleaning device, simplifies the tooth cleaning process, and optimizes consumer experience.

In order to achieve the above object, the present invention provides an electric tooth cleaning device, comprising:

comprising a handle and a cleaning head detachably connected to the handle, wherein a drive unit, a fluid delivery unit and a control unit are arranged in the handle;

Wherein, the drive unit includes a motor, and the shaft of the motor is hollow.

On this basis, the cleaning head is a brush head or a spray head;

When the brush head is connected with the handle, the control unit controls the movement of the motor to drive the brush head to brush teeth;

When the spray head is connected with the handle, the control unit controls the pump to deliver the fluid to the spray head for tooth cleaning.

On this basis, a toothpaste reservoir is also included. When the brush head is connected to the handle, the control unit controls the pump to deliver the toothpaste in the toothpaste reservoir to the brush head.

On this basis, the fluid comes from an external container.

On this basis, the motor further comprises: a rotor iron core, a coil, an upper bearing, an iron shell, a magnet spacer, a magnet, a lower bearing, a lower cover and a lead wire, and the rotor iron core is fixedly installed in the middle of the shaft, The rotor iron core is sleeved with a coil, the coil is connected with the lead wire, the upper bearing and the lower bearing are respectively installed on both ends of the rotor iron core on the shaft, the upper bearing and the lower bearing The iron shell and the lower cover are respectively fixedly connected, the magnet is fixedly arranged on the magnet positioning frame, the magnet positioning frame is covered and arranged on the outside of the rotor core, the iron shell and the lower cover In cooperation to form the casing of the motor, the rotor iron core, the coil, the magnet positioning frame and the magnet are all arranged in the casing.

On this basis, the lead wire is connected to the control unit through the lower cover.

On this basis, an insulating layer is provided on the surface of the iron shell, and the insulating layer is made of an insulating and anti-corrosion nanocomposite ceramic coating.

The electric tooth cleaning device provided by the present invention utilizes a hollow motor shaft to arrange a liquid conveying system, rationally utilizes the limited space in the handle of the electric toothbrush, and realizes two functions of tooth brushing and tooth cleaning. Further, different cleaning heads can be matched in use, and the user can achieve three purposes of automatically adding toothpaste, brushing teeth and cleaning teeth when using the same electric tooth cleaning device.

Description of drawings

1 is a structural diagram of an electric tooth cleaning device provided in Embodiment 1 of the present invention;

2 is a structural diagram of an electric tooth cleaning device using a brush head as a cleaning head according to Embodiment 1 of the present invention;

3 is a structural diagram of an electric tooth cleaning device using a spray head as a cleaning head according to Embodiment 1 of the present invention;

4 is an exploded view of a motor according to Embodiment 2 of the present invention;

5 is a schematic structural diagram of the motor provided in Embodiment 2 of the present invention after the assembly is completed;

FIG. 6 is a schematic structural diagram of another angle after the motor according to Embodiment 2 of the present invention is assembled.

In the picture:

1. Handle;

11. Motor, 12. Control unit, 13. Fluid delivery unit, 14. Liquid storage device, 15. End cap, 16. Separator, 17. Internal thread;

111. Shaft, 112. Rotor core, 113. Coil, 114. Upper bearing, 115. Iron shell, 116. Magnet spacer, 117. Magnet, 118. Lower bearing, 119. Lower cover, 120. Lead wire;

131. Pump, 132. First hose, 133. Second hose, 134. Fixture, 135. Extension tube;

141. External thread, 142. Toothpaste storage, 143. External container;

2. Clean the head;

21. Brush head, 22. Spray head;

detailed description

In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved more clearly, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. Obviously, the described embodiments are only the present invention. Some examples, but not all examples. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present invention.

In the description of the present invention, unless otherwise expressly specified and limited, the terms "connected", "connected" and "fixed" should be understood in a broad sense, for example, it may be a fixed connection, a detachable connection, or an integrated ; It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.

In the present invention, unless otherwise expressly specified and limited, a first feature "on" or "under" a second feature may include the first and second features in direct contact, or may include the first and second features Not directly but through additional features between them. Also, the first feature being "above", "over" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is level higher than the second feature. The first feature is "below", "below" and "below" the second feature includes the first feature being directly below and diagonally below the second feature, or simply means that the first feature has a lower level than the second feature.

Example 1

FIG. 1 is a structural diagram of an electric tooth cleaning device according to Embodiment 1 of the present invention. Referring to FIG. 1 , the electric tooth cleaning device includes a handle 1 and a cleaning head 2 detachably connected to the handle 1 .

This detachable combination method reduces the length of the electric tooth cleaning device, is convenient to carry, and at the same time, it is convenient for the user to replace the cleaning head.

A drive unit, a fluid delivery unit 13 and a control unit 12 are provided in the handle 1 . The drive unit includes a motor 11, and the shaft 111 of the motor 11 is hollow.

Specifically, one end of the shaft 111 exposes the handle 1 and is detachably connected to the cleaning head 2; the control unit 12 controls the driving unit to drive the cleaning head 2 to achieve regular movement.

The fluid delivery unit 13 includes a pump 131 and a fluid conduit connected to it, and the fluid conduit conveys the fluid to the cleaning head 2 through the hollow shaft 111 of the motor 11 . The fluid conduit includes a first hose 132 and a second hose 133; both the first hose 132 and the second hose 133 are connected to the pump 131, the first hose 132 is arranged in the shaft 111, and the second hose 133 is connected to the storage The liquid device 14 is connected, and the pump 131 delivers the fluid in the liquid storage device 14 to the cleaning head 2 through the second hose 133 and the first hose 132 under the control of the control unit 12 .

Specifically, since the shaft 111 is hollow, the first hose 132 is arranged inside the shaft 111 , and the end of the shaft 111 away from the cleaning head is sealed with the first hose 132 ; the first hose 132 is connected to the shaft 111 . The position of the inlet connection can be oscillated in small amplitudes along with the shaft 111 . It is avoided that the liquid overflows from the interface position due to friction, and the sealing between the first hose 132 and the shaft 111 is ensured.

After the pump 131 pressurizes the liquid, the liquid can be delivered to the cleaning head 2 through the second hose 133 and the first hose 132 . The higher the pressure with which the liquid is pressurized, the more liquid is ejected from the cleaning head 2 per unit time.

The control unit 12 can control the pump 131, and can also control the motor 11, so as to realize different functions of the electric tooth cleaning device. For example: the control unit 12 controls the motor 11 to rotate and the pump 131 does not pressurize, at this time the electric tooth cleaning device can achieve a separate brushing function; the control unit 12 controls the motor 11 to not rotate and the pump 131 pressurizes, at this time the electric tooth cleaning device can To achieve the function of cleaning teeth; the control unit 12 can also control the rotation of the motor 11 and the pressurization of the pump 131. At this time, the electric tooth cleaning device can realize the functions of automatically extruding toothpaste and vibrating and brushing teeth.

On the basis of the above embodiment, the cleaning head 2 includes a brush head 21 and a spray head 22, one of the brush head 21 and the spray head 22 is connected to the end of the shaft 111 exposed to the handle 1, that is, the brush head 21 and the spray head 22 are not connected to the shaft at the same time. 111 exposes one end of the handle 1 to connect; the control unit 12 controls the drive unit to drive the brush head 21 to achieve regular movement; the control unit 12 controls the fluid delivery unit 13 to deliver fluid to the spray head 22 or the spray head 22 .

One end of the cleaning head 2 close to the handle 1 is provided with a receiving groove corresponding to the shaft 111 , so that the cleaning head 2 engages the shaft 111 and exposes the part of the handle 1 , so as to be detachably fixed on the handle 1 .

Using the accommodating groove to engage one end of the shaft 111 can not only make the cleaning head 2 stably fixed on the shaft, but also make it easier to remove the cleaning head 2 from the shaft, avoiding cumbersome operations and reducing the need for users to replace and clean Head 2 difficulty.

On the basis of the above-mentioned embodiment, the end of the handle 1 away from the cleaning head 2 has an openable end cover 15; the interior of the handle 1 is provided with a partition 16, and the partition 16 partitions the interior of the handle 1 into a first cavity and a second cavity cavity; the second cavity is close to the end cover 15; a through hole is provided on the partition plate 16; the driving unit, the fluid delivery unit 13 and the control unit 12 are arranged in the first cavity.

The partition 16 separates the handle 1 to achieve dry and wet separation inside the electric tooth cleaning device, provides a dry working environment for the motor 11, the control unit 12 and the pump 131, and avoids failures caused by water ingress.

The length of the second hose 133 can be determined according to actual needs. When not in use, the second hose 133 is folded and accommodated in the second cavity, so that the loss of the second hose 133 is avoided and the cleaning of the second hose 133 is ensured. When in use, open the end cap 15 and take out the second hose 133, so that the idle end of the hose 133 is immersed in the liquid to absorb the liquid. After the second hose 133 is in contact with the liquid, the liquid can reach the cleaning head 2 in sequence through the second hose 133 , the pump 131 , the first hose 132 .

FIG. 2 is a structural diagram of an electric tooth cleaning device using the brush head 21 as the cleaning head 2 according to Embodiment 1 of the present invention. When the brush head 21 is connected with the handle 1, the control unit 12 controls the motor 11 to move, and drives the brush head 21 to brush teeth.

The brush head 21 is a type of the cleaning head 2, and the brush head 21 is provided with bristles and a plurality of through holes. Under the control of the driving unit, the bristles of the electric tooth cleaning device move regularly with the brush head 21 to clean the teeth that are in contact. On this basis, with the cooperation of the fluid delivery unit 13 , liquid toothpaste can also flow out from the several through holes of the brush head 21 to enhance the cleaning effect on the teeth.

Referring to FIG. 2 , the liquid storage device 14 includes a toothpaste reservoir 142 , the toothpaste reservoir 142 is disposed in the second cavity, and the second hose 133 is connected to the toothpaste reservoir 142 through the through hole on the partition plate 16 .

An inner thread 17 is provided on the inner wall of the second cavity; an outer thread 141 is provided on the toothpaste reservoir 142 , and the toothpaste reservoir 142 is fixed to the second cavity through the cooperation of the outer thread 141 and the inner thread 17 .

Specifically, during use, the brush head 21 is selected as the cleaning head 2 for the electric tooth cleaning device, and the cleaning head 2 is installed on the electric tooth cleaning device. Fill the toothpaste reservoir 142 with liquid (such as liquid toothpaste, liquid fluorine or tooth whitening liquid, etc.), open the detachable end cap 15 of the handle 1 , and screw the toothpaste reservoir 142 on the bottom of the handle 1 . Adjust the position of the second hose 133 so that one end of the second hose 133 is located at the bottom of the toothpaste reservoir 142 . Turn on the electric tooth cleaning device and adjust the mode of the electric tooth cleaning device to the corresponding mode (eg whitening mode). After the control unit 12 receives the instruction of the mode, it controls the pump 131 to perform corresponding operations. For example, in the whitening mode, the control unit 12 controls the motor 11 to rotate, so as to drive the brush head 21 to vibrate to clean the teeth. The control unit 12 controls the pump 131 to extract the liquid in the toothpaste storage 142, and flows out from the through hole of the brush head 21 at a certain flow rate, so as to cooperate with cleaning the teeth.

FIG. 3 is a structural diagram of an electric tooth cleaning device using the spray head 22 as the cleaning head 2 according to Embodiment 1 of the present invention.

When the spray head 22 is connected to the handle 1 , the control unit 12 controls the pump 131 to deliver the fluid to the spray head 22 for tooth cleaning.

The spray head 22 is another cleaning head 2 and includes through holes. With the cooperation of the fluid conveying unit 13, the through hole of the spray head 22 sprays liquid to achieve the purpose of cleaning teeth.

Referring to FIG. 3 , the liquid storage device 14 further includes an external container 143 , and the second hose is connected to the external container 143 through an extension tube 135 through one end of the handle 1 for opening the end cap 15 .

One end of the extension tube 135 close to the external container 143 is provided with a fixing device 134 , and the extension tube 135 is fixed to the external container 143 by the fixing device 134 .

Specifically, during use, a cleaning head 2 with a spray head 22 is selected for the electric tooth cleaning device, and the cleaning head 2 is installed on the electric tooth cleaning device. Open the detachable end cap 15 of the handle 1, connect the extension tube 135 to the second hose 133, immerse one end of the extension tube 135 into the external container 143 (such as a glass of water), and use the fixing device 134 to make the extension tube 135 The end submerged into the external container 143 is relatively fixed with the external container 143 to prevent the extension tube 135 from being separated from the external container 143 during the cleaning process of the electric tooth cleaning device. Turn on the electric tooth cleaning device, and adjust the mode of the electric tooth cleaning device to the corresponding mode (such as tooth cleaning mode). After the control unit 12 receives the instruction of the mode, it controls the pump 131 to perform corresponding operations. For example, in the cleaning mode, the motor 11 does not work, the control unit 12 controls the pump 131 to extract the liquid from the external container 143, and sprays the liquid from the spray head 22 at a certain flow rate to rinse the teeth gaps and gums.

The electric tooth cleaning device is compactly provided with a drive unit, a fluid delivery unit and a control unit, and both tooth cleaning and tooth brushing can be completed by the device. Further, the cleaning head of the device includes a brush head and a spray head, and the brush head and the spray head are not used at the same time. When the brush head is used as the cleaning head of the electric tooth cleaning device, the tooth brushing can be realized through the cooperation of the drive unit and the control unit. Further, the liquid toothpaste stored in the toothpaste storage can be delivered to the brush head through the fluid delivery unit before or during brushing to realize; when using the spray head as the cleaning head of the electric tooth cleaning device , the function of tooth cleaning can be realized through the cooperation of the driving unit, the fluid delivery unit and the control unit, and further, by adjusting the control unit, the intensity of the tooth cleaning can also be adjusted. Such a design enables the electric tooth cleaning device to both brush and wash teeth, saves the space required for placing the electric tooth cleaning device, simplifies the tooth cleaning process, and optimizes the consumer experience.

Example 2

Embodiment 2 is refined on the basis of Embodiment 1, and the structure of the motor 11 used in the electric tooth cleaning device is described in detail.

FIG. 4 is an exploded view of a motor 11 provided by Embodiment 2 of the present invention, FIG. 5 is a schematic structural diagram of the motor provided by Embodiment 2 of the present invention after the assembly is completed, and FIG. 6 is the assembled motor provided by Embodiment 2 of the present invention. Schematic diagram of another angle of the structure.

4-6 , the motor 11 further includes: a rotor core 112 , a coil 113 , an upper bearing 114 , an iron shell 115 , a magnet positioning frame 116 , a magnet 117 , a lower bearing 118 , a lower cover 119 , a lead 120 , a shaft 111 The rotor core 112 is fixedly installed in the middle of the rotor core 112, the coil 113 is sleeved on the rotor core 112, the coil 113 is connected with the lead 120, the upper bearing 114 and the lower bearing 118 are respectively installed on the two ends of the rotor core 112 on the shaft 111. The bearing 114 and the lower bearing 118 are fixedly connected to the iron shell 115 and the lower cover 119, respectively. The magnet 117 is fixedly arranged on the magnet positioning frame 116, and the magnet positioning frame 114 is covered and arranged on the outside of the rotor core 112. The iron shell 115 and the lower cover 119 In cooperation with forming the casing of the motor 11 , the rotor iron core 112 , the coil 120 , the magnet positioning frame 116 and the magnet 117 are all arranged in the casing.

The motor 11 designed in this way can not only generate high-frequency vibration, but also allow liquid to pass through the shaft 111 . When using the function of the motor 11 to generate high-frequency vibration, the brush head 21 connected with the shaft 111 can generate regular vibration, so as to achieve the purpose of tooth cleaning through physical friction. When the hollow function of the shaft 111 of the motor 11 is used, the fluid conveying unit 13 is mainly constituted by the shaft 111, and the liquid is ejected through the nozzle 22 to impact the teeth and gums, thereby achieving the purpose of cleaning. When these two functions are used at the same time, the teeth can be physically rubbed while supplemented with liquid (eg, liquid toothpaste, etc.), which avoids the extra step of applying toothpaste on the brush head 21 and simplifies the teeth cleaning procedure.

On the basis of the above-mentioned embodiment, the lower cover 119 is further provided with a through hole through which the lead 120 can pass through, and the lead 120 is connected to the control unit 12 through the lower cover 119 . Specifically, the lead 120 may be an enameled wire, and the enameled wire is connected to the coil 113. The enameled wire has a certain elasticity and can rotate with the coil 113 in a small range. The surface of the iron shell 115 is provided with an insulating layer, and the insulating layer is made of insulating and anti-corrosion nanocomposite ceramic paint. Generally, in order to cooperate with cleaning teeth, the unilateral rotation range of the shaft 111 can be set to be less than or equal to 4 degrees.

Although the present invention has been described in detail above with general description, specific embodiments and tests, some modifications or improvements can be made on the basis of the present invention, which is obvious to those skilled in the art . Therefore, these modifications or improvements made without departing from the spirit of the present invention fall within the scope of the claimed protection of the present invention.

Claims

An electric tooth cleaning device, characterized in that it comprises a handle and a cleaning head detachably connected to the handle, wherein a drive unit, a fluid delivery unit and a control unit are arranged in the handle;

Wherein, the drive unit includes a motor, and the shaft of the motor is hollow.
The electric tooth cleaning device of claim 1, wherein the fluid delivery unit includes a pump and a fluid conduit connected thereto, the fluid conduit delivering fluid to the motor through a hollow shaft of the motor Clean the head.
The electric tooth cleaning device according to claim 2, wherein the cleaning head is a brush head or a spray head;

When the brush head is connected with the handle, the control unit controls the movement of the motor to drive the brush head to brush teeth;

When the spray head is connected with the handle, the control unit controls the pump to deliver the fluid to the spray head for tooth cleaning.
The electric tooth cleaning device according to claim 3, further comprising a toothpaste reservoir, when the brush head is connected with the handle, the control unit controls the pump to transfer the toothpaste in the toothpaste reservoir delivered to the brush head.
The electric tooth cleaning device of claim 3, wherein the fluid comes from an external container.
The electric tooth cleaning device according to any one of claims 1-5, wherein the motor further comprises: a rotor iron core, a coil, an upper bearing, an iron shell, a magnet positioning frame, a magnet, a lower bearing, and a lower cover and lead wire, a rotor iron core is fixedly installed in the middle of the shaft, a coil is sleeved on the rotor iron core, the coil is connected with the lead wire, and the upper bearing and the lower bearing are respectively installed on the shaft Both ends of the upper rotor iron core, the upper bearing and the lower bearing are respectively fixedly connected to the iron shell and the lower cover, the magnet is fixedly arranged on the magnet positioning frame, and the magnet positioning frame is covered and arranged on the Outside the rotor iron core, the iron shell and the lower cover cooperate to form the outer casing of the motor, and the rotor iron core, the coil, the magnet spacer and the magnet are all arranged in the outer casing.
The electric tooth cleaning device according to claim 6, wherein the lead wire is connected to the control unit through the lower cover.
The electric tooth cleaning device according to claim 7, wherein the surface of the iron shell is provided with an insulating layer, and the insulating layer is made of insulating and anti-corrosion nanocomposite ceramic coating.