Tooth cleaning device

Abstract

The invention relates to a tooth cleaning device, and belongs to the technical field of tooth cleaning equipment. Comprising an oral irrigator body, a catheter, a nozzle and a protection mechanism. The annular air bag is attached to the gingiva and teeth of a user, and an internal flowing water source is matched, so that the discomfort of the user during use can be effectively reduced; in the moving process, the nozzle can move along with gingiva and teeth in the flushing process in a soft and comfortable mode, the stability of the insertion depth of the nozzle is ensured, the flushing effect is not influenced, meanwhile, the damage to the gingiva is reduced, and meanwhile, the flushing water pressure and the flushing mode can be adjusted in time according to the use requirement in the flushing process. The problems that according to an existing oral irrigator, the implantation depth is not easy to control, so that gingiva injury is easily caused, and the flushing water pressure and the flushing mode are inconvenient to adjust in time according to use requirements are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of teeth cleaning equipment, in particular to a teeth cleaning device. Background Art

[0002] An oral irrigator is a tool used to clean the oral cavity and clean teeth and spaces between teeth by using pulsed water flow. It mainly comes in two forms: portable and desktop. When in use, the general flushing pressure is between 0 and 90 psi.

[0003] When using an existing water flosser, it is usually necessary to place the nozzle of the water flosser into the oral cavity and then perform the teeth cleaning operation. However, in actual use, the following defects are likely to occur: during the nozzle placement process, the nozzle tip is likely to collide with the gums, thereby causing gum damage, and during the flushing process, the nozzle tip needs to move between the gums and the teeth. If it fits the gums and the teeth move, it is likely to cause gum damage and cause discomfort to the user. If it does not fit the gums and the teeth move, it is difficult to control the distance between the nozzle and the gap between the teeth. When the distance is too large, the flushing effect is affected. When the distance is too small, the impact force of the water source is likely to cause damage to the gums. The insertion depth is difficult to control, and during the flushing process, it is not convenient to adjust the flushing water pressure and flushing method in time according to usage needs.

[0004] In view of this, the present invention proposes a teeth cleaning device to solve the above problems in the prior art. Summary of the invention

[0005] In view of this, the main purpose of the present invention is to provide a teeth cleaning device to solve the problems of existing water flossers that the insertion depth is difficult to control during use, which can easily cause gum damage, and it is not convenient to adjust the flushing water pressure and flushing mode in time according to usage requirements.

[0006] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0007] A teeth cleaning device, comprising:

[0008] The main body of the water flosser;

[0009] A conduit is arranged at the top of the main body of the water flosser;

[0010] A nozzle is arranged at the end of the conduit, and a spiral blade is detachably arranged in the nozzle;

[0011] The protection mechanism is arranged on the nozzle and comprises:

[0012] Two annular airbags are arranged at the end of the nozzle, and a group of airbag balls are arranged between the annular airbags in the chain, and the annular airbags are connected to the airbag balls;

[0013] The arc plate is arranged in the nozzle, and a group of fan-shaped grooves are opened on the inner wall of the arc plate.

[0014] In a preferred embodiment, the protection mechanism further includes a counterweight ring, which is disposed inside an annular airbag and has a through hole formed in the counterweight ring.

[0015] In a preferred embodiment, a water inlet pipe connected to the annular airbag is embedded in the nozzle, a drainage hose is embedded in the nozzle, one end of the water inlet pipe extends into the catheter, and one end of the drainage hose passes through the annular airbag and extends into another annular airbag.

[0016] In a preferred embodiment, a group of drainage grooves are provided on the side of the annular airbag away from the nozzle, and a silicone pad is provided on the side of the annular airbag away from the nozzle.

[0017] In a preferred embodiment, a vertical pipe is embedded in the nozzle, a receiving pipe is provided on the vertical pipe, a piston plate is slidably connected in the vertical pipe, a vertical rod is slidably connected in the vertical pipe, two piston plates are arranged on the vertical rod, and the top of the vertical rod is connected to the arc plate, and one end of the drainage hose extends into the vertical pipe and is located between the two piston plates.

[0018] In a preferred embodiment, the inner diameter of the drain hose is larger than the inner diameter of the receiving pipe.

[0019] In a preferred embodiment, a spring is disposed in the vertical pipe, and one end of the spring is disposed on the outer side of a piston plate.

[0020] In a preferred embodiment, an annular groove is provided in the conduit, one end of the receiving tube extends into the annular groove, and a reflux tube is provided between the annular groove and the main body of the oral irrigator.

[0021] In a preferred embodiment, a drainage channel is provided between the counterweight ring and the drainage hose, and the counterweight ring is made of rubber.

[0022] In a preferred embodiment, a groove is provided in the nozzle, the arc-shaped plate is embedded in the groove, both ends of the arc-shaped plate are provided with chamfers, and opposite ends of two adjacent arc-shaped plates are in contact.

[0023] Compared with the prior art, the present invention provides a tooth cleaning device having the following

[0024] Beneficial effects:

[0025] 1. By using a ring-shaped airbag to fit the user's gums and teeth, combined with an internal flowing water source, it can effectively reduce the user's discomfort during use; and during the movement process, the use of a counterweight ring support can ensure that the nozzle is inserted at a stable depth, which does not affect the flushing effect and can effectively reduce damage to the gums.

[0026] 2. Through the setting of the protective mechanism, during the flushing process, if pressure reduction is required, the user can apply a slight force to the nozzle to make the counterweight ring block the corresponding drainage hose, thereby reducing the water flow in the corresponding vertical pipe, and making the compressed spring drive the arc plate at the corresponding position to be placed in the water flow channel, and use the arc plate to block and disrupt the water flow, thereby achieving the pressure reduction effect; at the same time, after all the arc plates have moved into the water flow channel, the fan-shaped groove inside can also be used to diffuse and guide the water source, and different flushing methods can be adjusted according to the different shapes of water flow exported by the nozzle. It solves the problem that the insertion depth of the existing water flosser is difficult to control during use, which can easily cause gum damage, and it is not convenient to adjust the flushing water pressure and flushing method in time according to the use needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained like these drawings without paying creative work.

[0028] Figure 1 It is a structural schematic diagram of the teeth cleaning device of the present invention;

[0029] Figure 2 It is a schematic diagram of the structure of the nozzle and the annular airbag of the present invention;

[0030] Figure 3 It is a cross-sectional schematic diagram of the annular airbag and the standpipe of the present invention;

[0031] Figure 4 For the present invention Figure 3 A partial enlarged view of the middle A;

[0032] Figure 5 For the present invention Figure 3 A partial enlarged view of point B in the middle;

[0033] Figure 6 For the present invention Figure 3 A partial enlarged view of point C in the middle;

[0034] Figure 7 It is a schematic diagram of the structure of the arc plate and the drainage hose of the present invention;

[0035] Figure 8 It is an exploded schematic diagram of the nozzle and the conduit of the present invention;

[0036] Fig. 9 It is a schematic diagram of the structure of the counterweight ring and the through hole of the present invention;

[0037] Fig.10 For the present invention Figure 1 A partial enlarged view of point D in the middle.

[0038] In the figure:

[0039] 100. The main body of the water flosser;

[0040] 200, conduit; 210, annular groove; 211, return pipe;

[0041] 300, nozzle; 310, spiral blade; 320, water inlet pipe; 330, drainage hose; 340, vertical pipe; 341, receiving pipe; 342, piston plate; 343, vertical rod; 344, spring;

[0042] 400, protective mechanism; 410, annular airbag; 411, airbag ball; 412, drainage groove; 413, silicone pad; 420, arc plate; 421, fan-shaped groove; 430, counterweight ring; 431, through hole. DETAILED DESCRIPTION

[0043] The structure of the teeth cleaning device will be further described in detail below in conjunction with the accompanying drawings and embodiments of the present invention.

[0044] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0045] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments of the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0046] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0047] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0048] Combine the following Figures 1 to 10 The teeth cleaning device of the present invention is described.

[0049] Embodiment 1:

[0050] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, in one embodiment, a tooth cleaning device includes a water flosser body 100, a conduit 200 installed at the top of the water flosser body 100, a nozzle 300 installed at one end of the conduit 200, a group of detachable spiral blades 310 installed inside the nozzle 300, and a protective mechanism 400 is also provided at the front end of the nozzle 300 for protecting the user's gums during the tooth flushing process. The protective mechanism 400 includes two annular airbags 410 and a group of arc plates 420, the arc plates 420 are arranged inside the nozzle 300 and a group of fan-shaped grooves 421 are opened on the inner wall of the arc plates 420, the two annular airbags 410 are both at one end of the nozzle 300, and a group of airbag balls 411 are installed between the two annular airbags 410, and the two annular airbags 410 are connected through the airbag balls 411.

[0051] It should be noted that if Figure 4 and Figure 7 As shown, the protection mechanism 400 further includes a weight ring 430 , which is fixedly mounted inside an annular airbag 410 , and a group of through holes 431 are opened inside the weight ring 430 .

[0052] Specifically, when performing a teeth cleaning operation, the user holds the tooth flosser body 100 and then places the nozzle 300 into the mouth. Figure 3 As shown, the left annular airbag 410 is used to contact the teeth and gums to reduce the occurrence of bumps during the insertion process, and the right annular airbag 410 is used for soft support. After the nozzle 300 is inserted, the micro water pump in the water flosser body 100 will drive the water source along the conduit 200 to introduce the nozzle 300. At this time, most of the water source is guided along the spiral blade 310 and sprayed into the oral cavity in a spiral water flow to complete the annular spray on the tooth surface, which is convenient for water to enter and remove internal food debris and dental plaque. At the same time, part of the water source is introduced into the two annular airbags 410, and the annular airbags 410 are matched to complete the water flow of the two annular airbags 410. At this time, the left annular airbag 410 is filled with flowing water, which is gentler and more comfortable when in contact with the user's gums, reducing discomfort; and in the process of moving, the annular airbag 410 uses its own flexibility to follow the shape of the user's gums, so as to ensure the stability of the insertion depth of the nozzle 300 and reduce excessive distance deviation from the gums. In addition, this method can cause slight deformation of the gum tissue during the squeezing contact with the gums, thereby opening the gap between the teeth to a certain extent, making it easier for water to enter and remove food debris and dental plaque inside.

[0053] By setting the counterweight ring 430, on the one hand, the counterweight of the nozzle 300 end can be increased to improve the stability of the area and reduce the shaking when the water flow is sprayed; on the other hand, Figure 4As shown, the left annular airbag 410 can be supported, and with the setting of the through hole 431, the water source can flow along the through hole 431 to achieve a damping effect when squeezed, thereby reducing the phenomenon of excessive squeezing and large deformation of the left annular airbag 410. The counterweight ring 430 can also complete water pressure adjustment when squeezed. If during the flushing process, the user needs to fine-tune the water pressure for areas such as tooth decay, swelling and pain, the user can apply a little force to squeeze a certain area of ​​the counterweight ring 430. At this time, the arc plate 42 corresponding to the area 0 moves from the inside of the nozzle 300 to its water flow channel to block the water source, thereby achieving the effect of reducing water pressure. When the user needs to squeeze the weight ring 430 as a whole, a slight force can be applied to the nozzle 300 to make its end squeeze and contact the gums, and then the corresponding arc plate 420 moves completely, so that the pressure reduction effect is better. The user can pre-select the water pressure gear before use, and with this pressure reduction method, it is convenient for the user to choose a softer multi-stage pressure reduction method during the flushing process, which is more convenient and flexible than the traditional gear adjustment during use.

[0054] After the arc plate 420 has fully moved, the spiral water flow in the nozzle 300 will be squeezed out from the arc plate 420 at the corresponding position. At this time, part of the spiral water flow on the outside will enter the inside of the fan-shaped groove 421, and then diffuse and spray into the oral cavity along the fan-shaped groove 421, but at this time, the inside of the water flow is still discharged in a spiral shape, so that the water source introduced into the oral cavity at this time has the shape of the internal water flow impacting in a spiral form. The outer water source should normally be guided by the fan-shaped groove 421 to spray along the fan shape, but affected by the internal spiral water flow, it will be driven by rotation, so that the outer water source is sprayed in an arc shape. While not affecting the internal spiral water flow to flush the teeth, the outer arc spraying water source will further increase the flushing angle and range, and can effectively complete water flushing for different areas and angles, reducing the flushing dead corners of food residues and dental plaque.

[0055] It should be noted that since the spiral blade 310 is detachable, after it is disassembled, the water source derived from the nozzle 300 will be changed to a traditional water column. After contacting the arc plate 420, the water source can still be diffused under the influence of the fan-shaped groove 421, and the flushing range is wider than the original.

[0056] During the entire flushing operation, the disassembly and assembly of the spiral blade 310 can be pre-selected in the early stage of flushing. During the flushing process, the water pressure and the flushing method can be flexibly adjusted according to the use requirements. The arc plate 420 is used to complete multiple adjustments of the water pressure. At the same time, the water source outlet method of the nozzle 300 can be used to change the flushing method:

[0057] The spiral blade 310 can be disassembled and flushed with a conventional water column, which is suitable for users with normal flushing needs;

[0058] The spiral blade 310 is removed, and the traditional water column is used for flushing, and the curved plate 420 is used to guide the water column outward, so as to diffuse and spray the water column outside to relieve the flushing pressure, which is suitable for users with sensitive gums;

[0059] The spiral blade 310 is installed to derive a spiral water flow, which is suitable for users who need to deeply clean teeth and tooth gaps;

[0060] The spiral blade 310 is installed to guide the spiral water flow, and the arc plate 420 is used to guide the water column to be diffusely sprayed in an arc shape on the outside. This is suitable for orthodontic users who need strong flushing force, a large flushing range, and various angles, that is, users in the tooth correction period.

[0061] Embodiment 2:

[0062] Based on the tooth cleaning device as described in Example 1, Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 and Fig.10 As shown, a water inlet pipe 320 connected to an annular airbag 410 is embedded in the interior of the nozzle 300, and a group of drainage hoses 330 are also embedded in the interior of the nozzle 300. One end of the water inlet pipe 320 extends to the interior of the catheter 200, and one end of the drainage hose 330 passes through an annular airbag 410 and extends to the interior of another annular airbag 410.

[0063] It should be noted that the water inlet pipe 320 can be used to drain part of the water source that impacts the nozzle 300, and the water source is introduced into the corresponding annular airbag 410, and then the water source is discharged along the drainage hose 330, so that the water source in the annular airbag 410 is in a flowing state, increasing the comfort when used for gum bonding.

[0064] In a preferred embodiment, Figure 2 , Figure 3 and Figure 4 As shown, a group of drainage grooves 412 are opened on the side of the annular airbag 410 away from the nozzle 300, and a group of silicone pads 413 are installed on the side of the annular airbag 410 away from the nozzle 300.

[0065] When using, Figure 2 As shown, the front annular airbag 410 is used to contact the user's gums and teeth. During the flushing process, the back annular airbag 410 can intercept the flushing water source to reduce its splashing phenomenon. At the same time, the drainage groove 412 is used to facilitate the discharge of the flushing water source.

[0066] The use of flowing water combined with the annular airbag 410 can achieve a squeezing and massaging effect on the user's gums, and the setting of the silicone pad 413 can enhance the massage effect.

[0067] In a preferred embodiment, Figure 4 and Figure 7 As shown, a group of vertical pipes 340 are embedded in the interior of the nozzle 300, and a receiving tube 341 is installed on the vertical pipe 340. Two piston plates 342 are slidably connected to the interior of the vertical pipe 340, and a vertical rod 343 is slidably connected to the interior of the vertical pipe 340. The two piston plates 342 are both installed on the vertical rod 343. The top of the vertical rod 343 is connected to the arc plate 420. One end of the drainage hose 330 extends to the interior of the vertical pipe 340 and is located between the two piston plates 342; the inner diameter of the drainage hose 330 is larger than the inner diameter of the receiving tube 341; a spring 344 is installed in the interior of the vertical pipe 340, and one end of the spring 344 is fixedly installed to the outer side of a piston plate 342.

[0068] During normal flushing operation, the spring 344 is in a compressed state. At this time, the slight pressure of the water flow on the arc plate 420 and the impact force of the water discharged from the drain hose 330 are sufficient to compress the spring 344. However, when the counterweight ring 430 is squeezed, the counterweight ring 430 will deform. When its deformation position is biased toward the drain hose 330, the port of the drain hose 330 will be partially blocked, resulting in a decrease in the drainage volume in the drain hose 330. When the water flow inside the corresponding drain hose 330 is reduced, such as Figure 4 As shown, when the water source is discharged, the impact force on the bottom piston plate 342 is weakened. At this time, the impact force of the water source discharge is much smaller than the deformation force of the spring 344, so that the spring 344 resets the deformation and drives the piston plate 342 and the vertical rod 343 to move upward, that is, the arc plate 420 is pushed into the water flow channel in the nozzle 300.

[0069] In a preferred embodiment, Figure 1 and Figure 8 As shown, an annular groove 210 is further provided inside the conduit 200 , one end of the receiving tube 341 extends to the inside of the annular groove 210 , and a reflux tube 211 is installed between the annular groove 210 and the oral irrigator body 100 .

[0070] During use, since the water injected into the annular air bag 410 does not come into contact with the human oral cavity, the annular groove 210 is used to collect the discharged water derived from the receiving tube 341, and then the water is introduced into the water box on the oral irrigator body 100 along the reflux pipe 211 to complete recycling and save energy.

[0071] In a preferred embodiment, Figure 4As shown, a drainage channel is provided between the weight ring 430 and the drainage hose 330 , and the weight ring 430 is made of rubber.

[0072] When in use, the setting of the drainage channel can ensure that the drainage effect of the drainage hose 330 is not affected under normal conditions. Since the material of the counterweight ring 430 is rubber, the deformation effect of each area thereof can be ensured.

[0073] In a preferred embodiment, Figure 2 , Figure 3 and Figure 7 As shown, a groove is further provided inside the nozzle 300, and the arc plate 420 is embedded in the groove, and both ends of the arc plate 420 are chamfered to reduce the interference and jamming phenomenon during the movement of multiple arc plates 420, and the opposite ends of two adjacent arc plates 420 are in contact with each other.

[0074] The counterweight ring 430 is hidden by using a groove, which can reduce unexpected impacts during normal water flow.

[0075] The working principle of the tooth cleaning device of the present invention is as follows: when performing tooth cleaning, the user holds the main body 100 of the water flosser, and then puts the nozzle 300 into the mouth. At this time, the corresponding annular air bag 410 is used to contact the teeth and gums to reduce the collision during the insertion process. Then the micro water pump in the main body 100 of the water flosser drives the water source to be introduced into the nozzle 300 along the guide tube 200. At this time, most of the water source is guided along the spiral blade 310 and sprayed into the oral cavity in the form of a spiral water flow. The water source that impacts the nozzle 300 is drained by the water inlet pipe 320, and the water source is introduced into the corresponding annular air bag 410, and then along the drainage pipe 320. The water hose 330 discharges the water source, so that the water source in the annular airbag 410 is in a flowing state, which increases the comfort when fitting with the user's gums and reduces discomfort. In the process of moving, the annular airbag 410's own flexibility moves to follow the user's gum shape, and in this way, in the process of squeezing and contacting with the gums, the gum tissue can be slightly deformed, so that the tooth gap can be opened to a certain extent, which is convenient for water to enter and remove the food residues and dental plaque inside. One annular airbag 410 is used to contact the user's gums and teeth. During the flushing process, another annular airbag 410 can be used to intercept the flushing water source to reduce its occurrence. The splashing phenomenon is prevented, and the drainage groove 412 is used to discharge the flushing water source; the flowing water source is used in combination with the annular airbag 410 to achieve a squeezing and massaging effect on the user's gums, and the setting of the silicone pad 413 is used to enhance the massage effect; if the water pressure needs to be fine-tuned during the flushing process, the user can apply a slight force to squeeze a certain area of ​​the counterweight ring 430, and when its deformation position is biased toward the drainage hose 330, the port of the drainage hose 330 will be partially blocked, resulting in a decrease in the drainage volume in the drainage hose 330. When the water flow inside the corresponding drainage hose 330 is reduced, the impact force on the corresponding piston plate 342 is weakened when the water source is discharged. At this time, the impact force of the water source discharge is much smaller than the deformation force of the spring 344, so that the spring 344 will reset its deformation and drive the piston plate 342 and the vertical rod 343 to move, that is, to push the arc plate 420 into the water flow channel in the nozzle 300, so as to block the contact with the water source to achieve a pressure reduction effect. When the user squeezes the counterweight ring 430 as a whole, the corresponding arc plate 420 will move completely, so that the pressure reduction effect is better. The user can pre-select the water pressure gear before use, and match the pressure reduction method, so that the user can choose a softer multi-stage pressure reduction method during the flushing process, which is more convenient and flexible than the traditional method of adjusting the gear during use.

[0076] After the arc plate 420 has fully moved, the spiral water flow in the nozzle 300 will be squeezed out from the arc plate 420 at the corresponding position. At this time, part of the spiral water flow on the outside will enter the inside of the fan-shaped groove 421, and then diffuse and spray into the oral cavity along the fan-shaped groove 421, but at this time the inside of the water flow is still discharged in a spiral shape. Therefore, the water source introduced into the oral cavity at this time has the shape of the internal water flow impacting in a spiral form, so that the outer water source is sprayed in an arc shape. While not affecting the internal spiral water flow to flush the teeth, the outer arc-shaped spraying water source will further increase the flushing angle and range, which can effectively complete water flushing in different areas and angles, and reduce the blind spots for flushing food residues and dental plaque.

[0077] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0078] The above-described embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A tooth cleaning device, characterized in that: include: A dental flosser body (100); A conduit (200) is arranged at the top of the oral irrigator body (100); A nozzle (300) is arranged at the end of the conduit (200), and a spiral blade (310) is detachably arranged in the nozzle (300); The protection mechanism (400) is arranged on the nozzle (300) and comprises: Two annular airbags (410) are arranged at the end of the nozzle (300), and a group of airbag balls (411) are arranged between the annular airbags (410) of the chain, and the annular airbags (410) are connected to the airbag balls (411); The arc-shaped plate (420) is arranged in the nozzle (300), and a group of fan-shaped grooves (421) are opened on the inner wall of the arc-shaped plate (420).

2. A tooth cleaning device according to claim 1, characterized in that: The protection mechanism (400) further comprises a counterweight ring (430), wherein the counterweight ring (430) is arranged inside an annular airbag (410), and a through hole (431) is provided inside the counterweight ring (430).

3. A tooth cleaning device according to claim 2, characterized in that: The nozzle (300) is embedded with a water inlet pipe (320) connected to the annular airbag (410), and the nozzle (300) is embedded with a drainage hose (330), one end of the water inlet pipe (320) extends into the catheter (200), and one end of the drainage hose (330) passes through the annular airbag (410) and extends into another annular airbag (410).

4. A teeth cleaning device according to claim 1, characterized in that: A group of drainage grooves (412) are provided on the side of the annular airbag (410) away from the nozzle (300), and a silicone pad (413) is provided on the side of the annular airbag (410) away from the nozzle (300).

5. A teeth cleaning device as claimed in claim 3, characterized in that: The nozzle (300) is embedded with a vertical pipe (340), the vertical pipe (340) is provided with a receiving pipe (341), the vertical pipe (340) is slidably connected with a piston plate (342), the vertical pipe (340) is slidably connected with a vertical rod (343), the two piston plates (342) are both arranged on the vertical rod (343), and the top end of the vertical rod (343) is connected to the arc plate (420), and one end of the drainage hose (330) extends into the vertical pipe (340) and is located between the two piston plates (342).

6. A teeth cleaning device as claimed in claim 3, characterized in that: The inner diameter of the drainage hose (330) is greater than the inner diameter of the receiving tube (341).

7. A teeth cleaning device according to claim 5, characterized in that: A spring (344) is disposed in the vertical pipe (340), and one end of the spring (344) is disposed on the outside of a piston plate (342).

8. A teeth cleaning device according to claim 5, characterized in that: An annular groove (210) is provided in the conduit (200), one end of the receiving tube (341) extends into the annular groove (210), and a reflux tube (211) is provided between the annular groove (210) and the oral irrigator body (100).

9. A teeth cleaning device as claimed in claim 3, characterized in that: A drainage channel is provided between the counterweight ring (430) and the drainage hose (330), and the counterweight ring (430) is made of rubber.

10. A teeth cleaning device according to claim 1, characterized in that: A groove is provided in the nozzle (300), and the arc-shaped plate (420) is embedded in the groove. Both ends of the arc-shaped plate (420) are provided with chamfers, and the opposite ends of two adjacent arc-shaped plates (420) are in contact.

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