A handleless electric toothbrush

Abstract

The field of the present invention belongs to the field of electric toothbrushes, and particularly relates to a handleless electric toothbrush, which includes a brush head that can be repositioned by the tongue in the oral cavity and a power device that drives the brush head to perform a brushing motion. The handleless electric toothbrush of the present invention consists of a brush head that can be repositioned by the tongue in the oral cavity and a power device that drives the brush head to perform a brushing motion, which makes it convenient for the user to put the toothbrush into the mouth and eliminates the need to hold the brush handle during brushing, reducing the fatigue during brushing.

Description

Technical Field

[0001] The field of the present invention belongs to the field of toothbrushes, and particularly relates to an electric toothbrush. Background Art

[0002] A toothbrush is an oral care product. Toothpaste is applied to the brush, and then each part of the teeth is scrubbed repeatedly. An electric toothbrush makes the brush head generate high-frequency vibrations through the rapid rotation or vibration of the motor core, instantly decomposes toothpaste into fine foam, and deeply cleans the tooth gaps. At the same time, the vibration of the bristles can promote blood circulation in the oral cavity and has a massage effect on the gingival tissue.

[0003] Currently, the existing electric toothbrushes on the market, including pulse water flushing, sonic, ultrasonic, and electric spray toothbrushes, are all toothbrushes with handles. In addition, the current electric toothbrushes add a driving device inside the traditional toothbrush style, and at the same time, it is necessary to use the way of holding the toothbrush by hand to clean each tooth, which will cause problems such as a long cleaning time, uneven force on the teeth, inconvenient use, and a sense of fatigue for the user when brushing teeth.

[0004] Later, there was a tooth cleaner. Although it also has no brush handle, since the cleaner is made into a tooth sleeve structure and is integrally put on the teeth and brushes by vibrating up and down. This way, the device has a large volume, and due to the different shapes of the teeth and the vibration can only be carried out on the teeth in the oral cavity and cannot be controlled by the tongue to move horizontally in the oral cavity, the teeth are prone to uneven force, there are dead corners in cleaning, and it is easy to cause tooth damage, and the brushing experience is also poor. Summary of the Invention

[0005] Based on this, in view of the prior art, the technical problem to be solved by the present invention is to provide a handleless electric toothbrush that is convenient to use.

[0006] The technical solution of the present invention is as follows:

[0007] A handleless electric toothbrush, which includes a brush head that can be repositioned in the oral cavity by the tongue and a power device that drives the brush head to perform a brushing motion.

[0008] Preferably, in the above solution, the power device includes a drive motor, and the drive motor is hermetically arranged in the brush head and is drivingly connected to the brush head.

[0009] Preferably, in the above solution, the drive motor is a vibration motor or a rotary motor.

[0010] Preferably, in the above solution, the power device further includes a power cord, one end of the power cord is connected to the drive motor arranged in the brush head, and the other end is connected to a power supply.

[0011] Preferably, in the above solution, the power supply is separately arranged from the brush head, and the power cord is detachably connected to the power supply.

[0012] Preferably, the power supply is a power bank, a battery, or a power adapter that converts AC power into low-voltage DC power.

[0013] Preferably, a motor switch and a speed control switch are provided on the wire.

[0014] Preferably, the brush head includes a brush body and bristles. The drive motor is provided with a sealed housing, and the brush body is detachably sleeved on the sealed housing of the drive motor.

[0015] Preferably, a port is formed on the side of the brush body. This port is located on the power input side and is provided with a sealing plug. A through hole is formed on the sealing plug.

[0016] Preferably, a support member is further provided on the side of the vibration motor. One end of the support member is supported on the side of the vibration motor, and the other end extends out of the through hole and is connected to the power cord 1; the power cord that cooperates with the through hole forms a sealed joint. A slot is formed in the joint, and the end side of the support member extending out of the interface is inserted into the slot and forms an interference fit with it.

[0017] Preferably, the power device includes a vibration motor and a power cord. The vibration motor is arranged inside the brush head, and the power cord is arranged outside the brush head.

[0018] Preferably, the power device includes a drive motor that is located inside the oral cavity when working together with the brush head, and a power cord and a power plug that are separately arranged outside the oral cavity.

[0019] Preferably, the power device includes a drive motor that is located inside the oral cavity when working together with the brush head, a power supply that is separately arranged outside the oral cavity, and a power cord connected between the power supply and the motor.

[0020] Preferably, the power device includes an electrode that is located inside the oral cavity when working together with the brush head, a low-voltage power adapter with a voltage conversion circuit that is separately arranged outside the oral cavity during operation, and a power cord connected between the low-voltage power adapter and the electrode.

[0021] Compared with the prior art, when cleaning teeth, the handleless electric toothbrush of the present invention can reach any part of the teeth, so it can achieve the purpose of comprehensively cleaning teeth. The handleless electric toothbrush of the present invention consists of a toothbrush head that can be repositioned by the tongue in the oral cavity and a power device that drives the toothbrush head to perform a brushing motion. It is convenient for users to put the toothbrush into the mouth. When brushing teeth, there is no need to hold the toothbrush handle, avoiding uneven force due to holding the toothbrush by hand, reducing the fatigue during brushing, and avoiding damage to teeth and gums. In addition, the toothbrush head can be controlled by the tongue to move in the oral cavity, and the toothbrush head is provided with double-sided bristles, which improves the brushing efficiency and is also easy to clean. The handleless toothbrush can be set to be externally connected to a DC power supply, and the power supply can be a portable power supply for daily use, which is convenient for users to carry. At the same time, it can also be set to be externally connected to an AC power supply, which is convenient for users to use at home. In addition, the handleless toothbrush can also be set to have an internal power supply to provide power for the driving device of the handleless toothbrush. When using, the user only needs to put the handleless toothbrush with toothpaste into the mouth, which does not prevent the user from performing other activities and gives the user who gets up early to brush teeth a more relaxed brushing experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to make the content of the present invention easier to be clearly understood, the following further details the present invention according to specific embodiments of the present invention in conjunction with the drawings. However, the illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention, where:

[0023] Figure 1 Schematic diagram of the overall structure of Embodiment 1 of the handleless electric toothbrush of the present invention;

[0024] Figure 2 Transverse sectional view of the toothbrush head part in Embodiment 1 of the present invention;

[0025] Figure 3 Schematic perspective view of the toothbrush head in Embodiment 1 of the present invention;

[0026] Figure 4 Transverse sectional view of the toothbrush head in Embodiment 1 of the present invention (when the internal motor and related support and sealing structures are removed);

[0027] Figure 5 Schematic perspective view of the vibration motor used in Embodiment 1 of the present invention;

[0028] Figure 6 For the present invention Figure 5 Schematic diagram of the internal structure when the shown vibration motor is arranged in the toothbrush head;

[0029] Figure 7 Exploded view of Embodiment 1 of the present invention;

[0030] Figure 8 Schematic diagram of Embodiment 2 of the present invention with a power bank as the power supply;

[0031] Figure 9 Schematic diagram of Embodiment 3 of the present invention with a power adapter;

[0032] Figure 10 Schematic diagram of the embodiment in which the power cord of Embodiment 1 of the present invention is provided with a clamping plate;

[0033] Figure 11 Schematic diagram of the structure of Embodiment 4 of the rotating motor adopted by the present invention;

[0034] Figure 12 Internal structure schematic diagram of the present invention when a rotating motor is arranged inside the brush head;

[0035] Figure 13 Horizontal cross-sectional view of the present invention when a rotating motor is arranged inside the brush head;

[0036] Figure 14 Broken cross-sectional view of the present invention when a rotating motor is arranged inside the brush head;

[0037] Figure 15 Embodiment 5 of the present invention in which the motor is cancelled and an oscillating electrode is used instead;

[0038] The reference signs in the figure are shown as:

[0039] 1 - Brush head;

[0040] 11 - Bristles; 12 - Brush body; 13 - Cavity; 131 - Brush body port; 132 - Brush body port sealing plug; 1321 - Brush body through hole;

[0041] 2 - Power device;

[0042] 211 - Vibration motor; 212 - Rotating motor; 23 - Sealing housing; 24 - Waterproof gland; 251 - Upper motor mounting bracket; 252 - Lower motor mounting bracket; 253 - Support member; 2530 - Wiring hole; 26 - Waterproof rubber strip; Motor lead 27;

[0043] 221 - Power cord sealing joint; 231 - First sealing ring; 232 - Second sealing ring;

[0044] 3 - Power cord; Controller 312; 31 - Motor switch; 32 - Speed control switch; Clamping plate 33; Power cord sealing joint 221; Power plug 35; Plug 36

[0045] 4 - Power bank;

[0046] 5 - Power adapter;

[0047] 51 Voltage transformation circuit; 512 - Primary winding; 51a First terminal of the primary winding;

[0048] 513 - Secondary winding; 513a - First terminal of the secondary winding; 513b - Second terminal of the secondary winding; 53 - Feedback control circuit; 54 - Output voltage controller; 213 - Oscillation electrode. Detailed implementation

[0049] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the drawings and in combination with the embodiments.

[0050] It should be pointed out that the following detailed description is illustrative and is intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present application belongs.

[0051] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. The description of at least one exemplary embodiment below is actually only illustrative and in no way limits the present invention and its application or use. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0052] As Figure 1 、 Figure 8 、 Figure 9 、 Figure 11 、 Figure 15 shown, the present invention cancels the brush handle of the electric toothbrush to form a handleless electric toothbrush. By simply including a brush head that can be repositioned by the tongue in the oral cavity and a power device for driving the brush head to perform a brushing motion, it has revolutionary significance.

[0053] Since the present invention cancels the brush handle and the operation of holding the brush handle by hand, the drive motor is directly arranged in the brush head and drives the brush head when the brush head is placed in the oral cavity during brushing. And the position of the brush head can be changed by the tongue in the oral cavity. On the one hand, the toothbrush still has the function of cleaning teeth, and on the other hand, it enables the user to free both hands during brushing, no longer using the hand to hold the toothbrush handle, which is more convenient and reduces the fatigue intensity during brushing. In addition, in addition to the power provided by the drive motor, the user can also use the tongue to change the position of the brush head in the oral cavity and control the position of the brush head and the brushing time according to the user's experience, not only avoiding the discomfort caused by the rough back-and-forth movement of the brush handle in the oral cavity, but also avoiding the damage to the human teeth due to improper brushing operation. At the same time, since the position of the brush head can be controlled by the tongue, the brushing experience of people has become more comfortable and interesting, especially suitable for children who are reluctant to brush their teeth and are not very good at brushing their teeth.

[0054] The following describes the specific embodiments of the present invention with exemplary embodiments.

[0055] Embodiment 1

[0056] As Figures 1 - 7 shown, the handleless electric toothbrush of this embodiment includes a toothbrush head 1 that can be displaced by the tongue in the oral cavity and a power device 2 that drives the toothbrush head to perform a brushing motion.

[0057] The power device 2 includes a driving motor, which is a vibration motor 211 in this embodiment, and is hermetically arranged in the inner cavity of the toothbrush head. To supply power to the vibration motor, the power device for the driving motor is also connected with a power cord. One end of the power cord is connected to the vibration motor 211, and the other end is connected to a power source ( Figure 1 not shown in the example). The specific power source can be a dry battery, a power bank, or a household power source. For convenient control, a power switch and a speed adjustment button are provided on the power cord. When brushing teeth is needed, connect the power cord to the power source and control the vibration motor 211 to start. The toothbrush head 2 starts to vibrate slightly in the oral cavity to achieve brushing. At the same time, the present application also creatively designs it so that the toothbrush head can be displaced in the oral cavity by means of the tongue, or the position of the toothbrush head in the mouth can be adjusted through the power cord to achieve full and sufficient cleaning of all teeth.

[0058] The power cord provides the "path" through which electricity passes for the entire handleless toothbrush. Compared with the brush handle of a toothbrush with a handle, the power cord 1 is thinner. When the user puts the handleless toothbrush into the mouth during use, the power cord can also assist the user in controlling the toothbrush head, and at the same time can prevent the user from accidentally swallowing or inhaling it during brushing.

[0059] Furthermore, as Figure 1 shown, the toothbrush head 2 includes bristles 11 and a brush body 12, and the driving motor is hermetically arranged in the cavity 13 of the brush body, where:

[0060] Toothbrush head 1: To enable the toothbrush head to better clean teeth in all directions, the bristles are preferably arranged on the entire outer surface of the brush body, and the bristles are radially arranged on the outer peripheral surface. Specifically, the arrangement method, material, shape, and size of the bristles can be selected according to different users and actual usage requirements to improve oral comfort and be beneficial to cleaning the teeth. The present invention does not limit this, as long as it can be achieved by those skilled in the art.

[0061] Brush body 12: The shape of the brush body can be approximately spherical capsule-shaped, or approximately long capsule-shaped, or any other shape that improves the experience and is conducive to setting the motor. The brush body is approximately capsule-shaped, which is convenient to put into the oral cavity. It is convenient for the user to move the toothbrush with the tongue while ensuring the safety inside the oral cavity, and can avoid the bristles near the teeth end from causing harm to the teeth and gums. It is convenient for more comprehensive cleaning of teeth.

[0062] Whether it is the brush body or the bristles, since they need to be placed in the oral cavity, a non-toxic material with a certain flexibility and elasticity is preferred, such as non-toxic silicone material. In this way, when using the handleless electric toothbrush provided by the present invention, the brush body needs to be placed in the oral cavity. Using non-toxic silicone material can provide better use safety and help protect the teeth and oral cavity from harm.

[0063] In this embodiment, considering the problem that the brush head cannot be shared by multiple people but the motor can be reused, in order to enable the reuse of the motor and save costs, the present invention cleverly designs the brush head. As Figure 2 and Figure 3 shown, the brush head forms a detachable structure with the housing 23 that internally seals the motor. When it is necessary to replace and disassemble the used brush head, it can be disassembled from the brush body and a new brush head can be replaced, which is very simple and convenient.

[0064] Further preferably, the drive motor can directly adopt a waterproof motor, or the motor and the wire are directly assembled together, or soldered at the tail of the motor.

[0065] To further improve the sealing effect, support effect, and electrical connection effect of the brush head, this embodiment is optimized as follows:

[0066] One end of the brush body is closed and the other end forms a port 131 to facilitate the insertion of the motor. The port is arranged on the power input side, and a brush body port sealing plug 132 is sealed thereon. A through hole 1321 is formed on the sealing plug for the installation of the power line and the fastener.

[0067] Preferably, the brush body forms an inner cavity 13, and the drive motor is installed on the motor mounting bracket in the inner cavity of the brush body. The mounting bracket includes an upper mounting bracket 251 and a lower mounting member 252, which are buckled together. In addition, a support member 253 is provided on the side of the motor. One end of the support member supports on the side of the motor, and the other end extends out of the through hole 1321 for connecting with the power line 1. The power line cooperating with the through hole 1321 forms a power line sealing joint 221. Preferably, a slot is formed in the joint to allow the end side of the support member 253 extending out of the interface to be inserted into the slot and form an interference fit with it, so as to prevent gaps from being generated at the interface between the power line and the brush body and saliva from entering to cause the motor to short-circuit. In addition, for convenient wiring, an axially penetrating wiring hole 2530 is formed in the support member 253, and the power line passes through the wiring hole to be electrically connected to the motor. Preferably, in this embodiment, the support member is selected as a variable-diameter cavity metal column. The large-diameter side matches the inner diameter of the brush body, and the small-diameter side matches the power line sealing joint. The cavity inside the column forms a through wiring hole, and the power line is connected to the motor through the cylindrical cavity.

[0068] Optionally, the brush body port sealing plug 132 and the power line sealing joint 221 can be in a split plug-in fit with each other or integrally injection-molded.

[0069] To further prevent saliva from entering the cavity of the brush body that houses the motor when brushing teeth in the oral cavity, a first sealing ring 231 is provided between the outer circumferential surface of the sealing plug 132 of the brush head body and the through hole 1321 of the brush body as the first-stage seal. A second sealing ring 232 is provided between the inner circumferential surface of the sealing plug 132 at the port of the brush body and the outer circumferential surface of the support member 253. The second sealing ring 232 is in close fit with the outer circumferential surface of the support member to form a secondary seal.

[0070] In this way, during use, when the sealing plug and the power cord sealing joint are hermetically connected, the electrical connector of the power cord is electrically connected to the motor. This can not only prevent saliva in the oral cavity from causing a short circuit to the drive motor in the toothbrush and affecting the use of the entire toothbrush, but also ensure the safety of the user.

[0071] Furthermore, it can be further optimized that there are also three seals formed in the cavity of the brush head body that fixes the motor. According to the above sealing sequence, from the outside to the inside, there is a sealing outer shell 23 as the third seal, which partially forms a tertiary seal. Further inside, there is a waterproof sleeve 24 to form a quaternary seal. Even further inside, a waterproof rubber strip 26 is placed between the mating surfaces of the upper and lower frames that fix the drive motor to form a quinary seal. These five seals greatly prevent saliva in the oral cavity from entering the inside of the brush body and damaging the drive motor or the circuit when the motor is used in the oral cavity, improving the safety of using the brush head of the present invention. The frame of the motor includes two parts, an upper frame 251 and a lower frame 252. The two are buckled together and installed in the waterproof sleeve 24, and then installed in the motor sealing outer shell 23, and finally the whole is installed in the brush head. Thus, multi-layer sealing protection is achieved.

[0072] Preferably, the power supply voltage of the vibration motor is 1V - 6V, more preferably 2V - 5V, and even more preferably 3.7V.

[0073] In the above solution, preferably, a controller 312 is provided on the power cord 1. The controller has a motor switch 31 and a speed control switch 32. The motor switch 31 is provided on the power cord 1, which can control whether the motor works in the oral cavity, facilitating the user to control the start of the motor. Different people can adjust the vibration frequency of the drive motor according to their own situations, providing a better brushing experience. Preferably, as Figure 10 shown, a clamping plate 33 can also be provided on the power supply. On the one hand, it is convenient for holding, and on the other hand, it can also adjust the actual working length of the power cord to avoid the entire power cord following the vibration or rotation of the motor.

[0074] When brushing teeth is needed, start the drive motor. As Figure 1 shown, it drives the brush head 1 to vibrate slightly in the oral cavity. At the same time, the position of the brush head in the oral cavity can also be moved by means of the tongue, or the position of the brush head in the mouth can be adjusted through the power cord to achieve the cleaning of teeth at various positions.

[0075] Embodiment 2:

[0076] As Figure 8 shown, the drive motor is also the vibration motor 211, and the power device is matched with a power bank 4, that is, the power cord is connected to the power bank. In this case, it is particularly suitable for use in occasions where the power supply is inconvenient.

[0077] Of course, since the voltage and current required by a person during toothbrushing are relatively small, the power bank in this embodiment has a relatively low voltage and a small current value. The specific adapter is the prior art in this field, such as a mobile phone power bank. How to obtain a low voltage and a low current are well known to those skilled in the art and will not be elaborated here. When toothbrushing is needed, start the drive motor, as Figure 1 shown, drive the brush head 1 to vibrate slightly in the oral cavity. At the same time, the position of the brush head in the oral cavity can also be moved by means of the tongue, or the position of the brush head in the mouth can be adjusted through the power cord to achieve the cleaning of teeth at various positions.

[0078] Embodiment 3:

[0079] In addition to these self-provided power sources, it can also be as Figure 9 shown, by providing a power plug with a power adapter 5, that is, the power cord is connected to the power supply through the adapter. Since the voltage and current required by a person during toothbrushing are relatively small, in this embodiment, an adapter can convert a relatively high voltage into a relatively low voltage and a small current value. The specific adapter is the prior art in this field, such as a mobile phone power adapter. How to obtain a low voltage and a low current are well known to those skilled in the art and will not be elaborated here. When toothbrushing is needed, start the drive motor, as Figure 1 shown, drive the brush head 2 to vibrate slightly in the oral cavity. At the same time, the position of the brush head in the oral cavity can also be moved by means of the tongue, or the position of the brush head in the mouth can be adjusted through the power cord to achieve the cleaning of teeth at various positions.

[0080] Other structures and shapes can be designed in the same way as in Embodiment 1.

[0081] In this way, the user can simply plug the power plug into a suitable power socket, and the adapter converts the alternating current into low-voltage direct current, easily realizing the power supply. In this way, this toothbrush can be conveniently used at home or in a hotel by using a power adapter, expanding the scope of the use environment of the stemless electric toothbrush of the present invention. In summary, using the said power supply can meet the usage requirements of the user in different usage environments.

[0082] The above-mentioned power supply methods can be combined accordingly according to the usage occasion and the user's needs.

[0083] Embodiment 4:

[0084] The vibration motor of the present invention can also be changed to a rotary motor.

[0085] As Figures 11 - 14 shown by the rotating electric machine 212, when it is installed in the brush head body, one end that is not close to the power input terminal can be rotatably arranged on the end wall of the brush body 12. At this time, an axial protrusion can be formed on the end wall and a shaft hole can be formed for the motor shaft to be supported and rotated.

[0086] Other structures can adopt the structures of Embodiment 1-5.

[0087] Embodiment 5:

[0088] Of course, in addition to the DC power supply, the AC power supply is also optional. Preferably, it is a pulsed low-voltage DC power supply. Further preferably, the motor is cancelled and directly replaced with an oscillating electrode. The vibrating electrode is fixed to the brush head and is preferably hermetically arranged in the cavity of the brush head body. When it vibrates, it drives the brush head to vibrate. Specifically, it can be encapsulated and isolated in the brush head, and the electrode is driven by electromagnetic oscillation to drive the brush head to oscillate to clean teeth.

[0089] As Figure 15 shown, a voltage transformation circuit 51 is arranged in the adapter. This circuit can not only achieve low-voltage AC power but also low-voltage DC power according to the connected power supply. In this circuit, the primary winding 512 is coupled with the secondary winding 513. The first terminal of the primary winding of the secondary winding 513 is connected to the first terminal 51a of the primary winding through the feedback control circuit 53. The second terminal 513b of the secondary winding is for outputting low-voltage static electricity or low-voltage vibration. Since the secondary winding changes the current generated by the terminal back to the primary winding 512, a lower voltage can be obtained. If a pulsed voltage is adopted, a low-voltage low-frequency vibration can be obtained at the output of the secondary winding. Preferably, the feedback control circuit 53 can be a variable resistor.

[0090] Thus, the motor can be cancelled, and the oscillation of the brush head can be directly realized by the oscillation of the electrode, thereby realizing an efficient tooth cleaning effect, reducing the cost, and making the structure simpler. At this time, the electrode arranged in the brush head body is equivalent to a power device.

[0091] Embodiment 6:

[0092] Of course, in addition to the above-mentioned method of separately arranging the power supply and the drive motor, the handleless electric toothbrush can also be powered by a lithium battery (suitable for miniaturization), and the power supply and the drive motor are arranged together and the whole device is arranged in the oral cavity. At this time, a power switch is arranged on the brush head. When in use, the power switch is turned on to use, which is very convenient. However, preferably, the power switch is also encapsulated in the brush head and is turned on by pressure. Moreover, it is best to have an anti-swallowing measure for this method, such as a lead similar to the power cord in the above-mentioned embodiment on the brush head to prevent accidental swallowing during brushing.

[0093] Regardless of the driving method adopted, the above solution is preferable. The brush head includes a brush body and bristles. The bristles are arranged on the brush body. The brush body is the main part of the brush head. There is an inner cavity in the brush body, and a power device is directly arranged in the cavity of the brush body, which can conveniently realize brushless toothbrushing.

[0094] Of course, the present invention is not limited to the above embodiments. As long as it is a brushless electric toothbrush and includes a brush head that can be displaced by the tongue in the oral cavity and a power device for driving the brush head to perform a brushing motion, it is within the protection scope of this patent.

[0095] Embodiment 7:

[0096] The method embodiments of using the brushless electric toothbrush in the above embodiments 1-6 of the present invention are as follows:

[0097] (1) Charging plug type:

[0098] First, take out the brush head, connect the charging plug to the household power supply, then fully wet the brush head and squeeze toothpaste on it. Put the brush head directly into the mouth, then turn on the power switch, and adjust the vibration frequency of the toothbrush through the speed control switch according to your own situation to clean the teeth. Move the brush head with your tongue to clean all the teeth in the oral cavity. Finally, take out the brush head, turn off the power switch or unplug the charging plug, and clean the brush head.

[0099] (2) Self - contained power supply type:

[0100] First, take out the brush head, connect the charging cable to a DC power supply (such as dry batteries, power banks, etc.). Then fully wet the brush head and squeeze toothpaste on it. Put the brush head directly into the mouth, then turn on the power switch, and adjust the vibration frequency of the toothbrush through the speed control switch according to your own situation to clean the teeth. Move the brush head with your tongue to clean all the teeth in the oral cavity. Finally, take out the brush head, turn off the power switch, and clean the brush head.

[0101] From the above description, it can be seen that the power supply of the brushless electric toothbrush of the present invention has good configurability, simple structure, the toothbrush no longer has a brush handle, is more convenient to use, the force during tooth cleaning is more uniform and more comfortable, providing a better experience for users; the brush head is provided with double - sided bristles to improve the brushing efficiency. In addition, the brushless toothbrush of the present invention reduces the sense of fatigue during use, prevents damage to teeth and gums, and is also conducive to cultivating the habit of children using a brushless toothbrush. It liberates the hands during brushing, and users can perform other activities while brushing, having a good brushing experience.

[0102] Unless otherwise specifically stated, the relative arrangements of the components and steps, numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for the sake of convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationship. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods, and devices should be regarded as part of the authorized specification. In all the examples shown and discussed here, any specific values should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0103] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by orientation terms such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal", and "top, bottom", etc., is usually based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description. Without contrary description, these orientation terms do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and thus cannot be construed as limiting the protection scope of the present invention; the orientation terms "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0104] For the convenience of description, spatial relative terms such as "above...", "over...", "on the upper surface of...", "above", etc. may be used here to describe the spatial positional relationship between a device or feature shown in the drawings and other devices or features. It should be understood that the spatial relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the drawings for the device. For example, if the device in the drawing is inverted, the device described as "above other devices or structures" or "over other devices or structures" will then be positioned "below other devices or structures" or "under other devices or structures". Thus, the exemplary term "above..." can include both the orientations of "above..." and "below...". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding interpretations should be made for the spatial relative descriptions used here.

[0105] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular forms are also intended to include the plural forms. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they specify the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0106] It should be noted that the terms "first", "second", etc. in the specification, claims and drawings of the present application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present application described herein can be implemented in an order different from those illustrated or described herein.

[0107] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A handleless electric toothbrush, comprising a brush head that can be repositioned by the tongue in the oral cavity and a power device for driving the brush head to perform a brushing motion; The power device includes a driving motor, and the driving motor is hermetically arranged in the brush head and is drivingly connected to the brush head. The brush head includes a brush body and bristles. The driving motor is provided with a sealed housing, and the brush body is detachably sleeved on the sealed housing of the driving motor. A port is formed on the side of the brush body. This port is located on the power input side and is provided with a sealing plug, and a through hole is formed on the sealing plug. The power device further includes a power cord for connecting to an external power source. The external power source is arranged outside the brush head. One end of the power cord is connected to the driving motor arranged in the brush head, and the other end is connected to the external power source. The driving motor is a vibration motor. A support member is further arranged on the side of the vibration motor. One end of the support member is supported on the side of the vibration motor, and the other end extends out of the through hole and is connected to the power cord. The power cord cooperating with the through hole forms a sealed joint, and a slot is formed in the sealed joint. The end side of the support member extending out of the joint is inserted into the slot and forms an interference fit with the slot. The support member is a stepped cavity metal column. The large-diameter side matches the inner diameter of the brush body, and the small-diameter side matches the sealed joint of the power cord. A through wire hole is formed in the cavity of the column, and the power cord passes through the wire hole formed in the cavity of the column and is connected to the driving motor.

2. The handleless electric toothbrush according to claim 1, wherein: A motor switch and a speed control switch are arranged on the power cord.

3. The handleless electric toothbrush according to any one of claims 1-2, characterized in that: The external power source is a power bank or a battery or a power adapter that converts AC power into low-voltage DC power.

4. The handleless electric toothbrush according to any one of claims 1-2, characterized in that: A power plug is arranged at one end of the power cord connected to the external power source.

Images