Ultrasonic oral irrigator

Abstract

The application provides an ultrasonic oral irrigator, which introduces ultrasonic technology in the prior art to perform ultrasonic cavitation on water to increase disinfection and sterilization functions and improve irrigation effect. The ultrasonic oral irrigator comprises a nozzle assembly, the nozzle assembly comprises a variable amplitude part, the variable amplitude part is a variable amplitude rod, a first water channel is arranged in the variable amplitude rod, a water outlet is arranged at the front end of the variable amplitude rod, a water inlet is arranged at the rear end of the variable amplitude rod, and the first water channel penetrates from the water inlet to the water outlet; the first water channel comprises a converging section, the hole diameter of the converging section decreases along the water spraying direction; and a handle assembly, the handle assembly comprises a shell and a transducer, the rear end of the variable amplitude rod is connected with the transducer, the transducer is arranged in the shell, and the front end of the variable amplitude rod extends out of the shell. The water channel is arranged on the variable amplitude rod, so that the water channel has simple structure and is convenient to manufacture, water pressure is not easy to attenuate, the variable amplitude rod can better cavitate water when vibrating, and thus the ultrasonic oral irrigator has good tooth cleaning effect.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of oral cleaning devices, in particular to an ultrasonic oral irrigator. BACKGROUND

[0002] With the development of society and the progress of science and technology, oral care products are also increasing, such as sonic toothbrushes, oral irrigators, etc. Among them, the oral irrigator is one of the fastest growing products in recent years. Brushing teeth is an oral care work that everyone has to do every day, but in some cases, it is difficult to brush teeth, such as during orthodontic treatment and periodontal treatment, etc. At this time, oral irrigators should be used for oral care. Oral irrigators use high-pressure water flow to flush the gaps between teeth, the periodontal and the surface of the teeth to remove food residues and other debris. Currently, there are more and more oral irrigator products on the market, and people's acceptance is also increasing, and product technology is also improving. From the previous single continuous water flow flushing, pulse water flow flushing, gas-liquid mixed flushing and other functions have been developed.

[0003] The existing oral irrigator has a single function and does not have ultrasonic cavitation water flow, so it cannot provide disinfection and sterilization functions. SUMMARY

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the present application is to provide an ultrasonic oral irrigator to solve the problem that the oral irrigator in the prior art does not have ultrasonic cavitation water flow and cannot provide disinfection and sterilization functions.

[0005] To achieve the above-mentioned purposes and other related purposes, the present application provides an ultrasonic oral irrigator, comprising:

[0006] A nozzle assembly, the nozzle assembly comprising a variable amplitude rod, the variable amplitude rod being provided with a first water channel, the front end of the variable amplitude rod being provided with a water outlet, the rear end of the variable amplitude rod being provided with a water inlet, the first water channel extending from the water inlet to the water outlet, the first water channel comprising a converging section, the aperture of the converging section gradually decreasing along the water spraying direction;

[0007] A handle assembly, the handle assembly comprising a shell and a transducer, the rear end of the variable amplitude rod being connected to the transducer, the transducer being installed in the shell, the front end of the variable amplitude rod extending out of the shell.

[0008] Optionally, the transducer is installed in the shell through a hard structure or an elastic structure.

[0009] Optionally, the water outlet is a tapered hole with an aperture gradually increasing along the water spraying direction, and the converging section and the water outlet form a water channel structure that first contracts and then expands.

[0010] Optionally, the converging section is a stepped gradual change structure.

[0011] Optionally, the outer wall of the amplitude rod is of an equal diameter structure.

[0012] Alternatively, the outer wall of the amplitude rod is of a variable diameter structure, and the outer diameter of the amplitude rod gradually decreases along the water jet direction.

[0013] Optionally, the outer contour of the front end of the amplitude rod is of a blunt structure.

[0014] Optionally, the outer contour of the front end of the amplitude rod is provided with a chamfer structure, or the outer contour of the front end of the amplitude rod is of an arc structure.

[0015] Optionally, the water jet direction of the water outlet and the axis of the amplitude rod are parallel or at an angle.

[0016] Optionally, the front end of the amplitude rod is provided with a standing wave cavity, the water inlet of the standing wave cavity is in communication with the first water channel, the water outlet is in communication with the standing wave cavity, and water enters the standing wave cavity from the back and is then jetted out of the water outlet.

[0017] Optionally, the spray head assembly further comprises a sheath, the sheath is sleeved on the amplitude rod, the front end of the amplitude rod protrudes from the front end of the sheath, or the front end of the amplitude rod is located in the sheath and water is jetted out of the sheath.

[0018] Optionally, the spray head assembly further comprises a sheath, the sheath is sleeved on the amplitude rod, the front end of the amplitude rod protrudes from the front end of the sheath, or the front end of the amplitude rod is located in the sheath and water is jetted out of the sheath.

[0019] Optionally, the water jet direction of the water outlet and the axis of the amplitude rod are parallel or at an angle.

[0020] Optionally, the front end of the amplitude rod is of a bending structure, and the bending angle of the front end of the amplitude rod is 0°-90°.

[0021] Optionally, the front inner wall of the sheath is provided with an elastic rubber ring, the elastic rubber ring is sleeved on the amplitude rod, and the rear end of the sheath is connected with the shell or supported on the amplitude rod.

[0022] Optionally, an elastic sealing structure is further provided between the sheath and the amplitude rod, and the elastic sealing structure is used to seal and isolate the space between the sheath and the amplitude rod from the standing wave cavity.

[0023] Optionally, the sheath and the shell are detachably connected or the sheath and the shell are not detachably connected.

[0024] Optionally, the sheath is detachably mounted on the housing through at least one clamping mechanism, the clamping mechanism comprising a mounting groove, a locking pin and an elastic member, the locking pin being mounted in the mounting groove through the elastic member, and an annular groove being arranged on the outer circumferential surface of the sheath, the locking pin being pushed into the annular groove under the action of the elastic member.

[0025] Optionally, the handle assembly further comprises a water pump assembly, a water tank and a water suction pipe arranged in the housing, the water suction pipe being inserted into the water tank, a valve being arranged on the water suction pipe, and the water suction pipe being directly communicated with the water channel of the amplitude lever, or the water suction pipe being communicated with the water channel of the transducer, and the water channel of the transducer being communicated with the water channel of the amplitude lever.

[0026] Optionally, the water pump assembly comprises a water pump, a motor and a transmission, the motor driving the input shaft of the transmission to rotate, and the water pump being connected with the output shaft of the transmission.

[0027] Optionally, the handle assembly further comprises a power module arranged in the housing, the power module being a wired rechargeable module, a wireless rechargeable module or a non-rechargeable module.

[0028] Optionally, the handle assembly further comprises a heating module, the heating module being used for heating water.

[0029] Optionally, the handle assembly further comprises a circuit board and a control button, the circuit board and the control button being electrically connected.

[0030] Optionally, the handle assembly further comprises an indicator light, the circuit board and the indicator light being electrically connected.

[0031] As described above, the ultrasonic oral irrigator of the present application has at least the following beneficial effects:

[0032] By arranging the water channel on the amplitude lever, the water channel has a simple structure, is more convenient to manufacture, and water pressure is not easy to attenuate, the amplitude lever can better cavitate water when vibrating, thereby having a better tooth cleaning effect. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 A schematic view of the ultrasonic oral irrigator of the present application is shown.

[0034] Figure 2 A schematic view of embodiment one of the amplitude lever of the present application is shown.

[0035] Figure 3 A schematic view of embodiment two of the amplitude lever of the present application is shown.

[0036] Figure 4 A schematic view of embodiment three of the amplitude lever of the present application is shown.

[0037] Figure 5 A schematic view showing embodiment four of the amplitude horn of the present invention.

[0038] Figure 6 A schematic view showing embodiment five of the amplitude horn of the present invention.

[0039] Figure 7 A schematic view showing embodiment six of the amplitude horn of the present invention.

[0040] Figure 8 A schematic view showing another embodiment of the ultrasonic oral irrigator of the present invention.

[0041] Figure 9 A schematic view showing Figure 8 A close-up schematic view of the middle A.

[0042] Figure 10 A schematic view showing the transducer flexibly mounted of the present invention.

[0043] Figure 11 A schematic view showing embodiment one of the tip assembly with a sheath of the present invention.

[0044] Figure 12 A schematic view showing embodiment two of the tip assembly with a sheath of the present invention.

[0045] Figure 13 A schematic view showing embodiment three of the tip assembly with a sheath of the present invention.

[0046] Figure 14 A schematic view showing embodiment four of the tip assembly with a sheath of the present invention.

[0047] Figure 15 A schematic view showing embodiment five of the tip assembly with a sheath of the present invention.

[0048] Figure 16 A schematic view showing the standard sheath of the present invention.

[0049] Figure 17 A schematic view showing the periodontal pocket sheath of the present invention.

[0050] Figure 18 A schematic view showing the plaque and orthodontic sheath of the present invention.

[0051] Figure 19 A schematic view showing the tongue sheath of the present invention.

[0052] Figure 20 A schematic view showing the tartar sheath of the present invention.

[0053] Figure 21 shows a schematic view of another embodiment of the periodontal pocket sheath of the present application.

[0054] Figure 22 shows a schematic view of another embodiment of the periodontal pocket sheath of the present application.

[0055] Figure 23 shows a schematic view of another embodiment of the periodontal pocket sheath of the present application.

[0056] Element No. Explanation Amplitude horn 11, first water channel 111, converging section 1111, tapered hole 11111, water outlet 112, water inlet 113, arc-shaped structure 114, shell 21, transducer 22, soft rubber pad 220, soft rubber sleeve 223, standing wave cavity 115, sheath 12, water jet 121, elastic rubber ring 122, clamping mechanism 3, mounting groove 31, locking pin 32, elastic member 33, annular groove 123, water pump assembly 23, water tank 24, water suction pipe 25, valve 251, water pump 231, motor 232, speed changer 233, power module 26, circuit board 27, control button 28, indicator light 29, heating module 30. DETAILED DESCRIPTION

[0057] The following embodiments of the present application are illustrated by way of specific examples, and other advantages and effects of the present application can be easily understood by those skilled in the art from the contents disclosed in the specification.

[0058] Please refer to Figures 1 to 20 It should be noted that the structures, proportions, sizes, etc. shown in the drawings of the specification are merely used to understand and read the contents disclosed in the specification by those skilled in the art, and are not used to limit the conditions that the present application can be implemented, and therefore do not have technical significance. Any modification of the structure, change of the proportional relationship, or adjustment of the size, without affecting the effects and purposes that the present application can produce, should still fall within the scope of the technical content disclosed in the present application. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle", and "one" used in the specification are merely for the convenience of clear description, and are not used to limit the scope of the present application, and the change or adjustment of the relative relationship, without substantially changing the technical content, should also be considered as the scope of the present application.

[0059] The following embodiments are only for illustration. The embodiments can be combined, and are not limited to the contents shown in the following single embodiment.

[0060] Please refer to Figures 1 to 15This invention provides an embodiment of an ultrasonic oral irrigator, comprising: a nozzle assembly and a handle assembly. The nozzle assembly includes an amplitude transformer, which is an amplitude transformer rod 11. The amplitude transformer rod 11 has a first water channel 111 inside, a water outlet 112 at its front end, and a water inlet 113 at its rear end. The first water channel 111 extends from the water inlet 113 to the water outlet 112. The handle assembly includes a housing 21 and a transducer 22. The rear end of the amplitude transformer rod 11 is connected to the transducer 22, which is installed inside the housing 21. The front end of the amplitude transformer rod 11 extends out of the housing 21. By providing a water channel on the amplitude transformer rod 11, the water channel structure is simplified, making manufacturing easier. Simultaneously, the water pressure is less prone to attenuation, and the amplitude transformer rod 11 can better cavitate the water during vibration, thus achieving a better teeth cleaning effect. Please refer to [link to relevant documentation]. Figures 1 to 9 , Figures 10 to 15 The first water channel 111 includes a converging section 1111, the diameter of which decreases from large to small along the water spray direction. The converging structure of the first water channel 111 makes it easier for the water pressure to decrease when the water is sprayed out, resulting in a better flushing effect.

[0061] In this embodiment, the transducer 22 is mounted inside the housing 21 via a rigid structure or an elastic structure. The rigid structure can be installed using bolts or threads, or it can be a welded structure. The elastic structure can be installed using elastic rubber.

[0062] In this embodiment, please refer to Figure 1 , Figure 10 , Figure 14 The transducer 22 is mounted inside the housing 21 via an elastic structure. This elastic structure prevents the vibration of the transducer 22 from being disturbed by the housing 21, thereby improving vibration performance and ensuring the cavitation effect of the amplitude transformer 11 on the water. This elastic structure can be a soft rubber sleeve 223, which is fitted onto the transducer 22. A soft rubber pad 220 can also be provided at the bottom of the transducer 22.

[0063] In this embodiment, please refer to... Figures 1 to 9 , Figures 10 to 15 The outlet 112 is a conical orifice with a diameter that gradually increases along the spray direction. The converging section 1111 and the outlet 112 form a water channel structure that first contracts and then expands. This first convergence and then expansion ensures that the water pressure does not easily decrease and also maintains the shape of the sprayed water column.

[0064] In this embodiment, the convergence segment 1111 is a gradually converging structure and / or the convergence segment 1111 is a sudden convergence structure. Please refer to [link to relevant documentation] for details. Figures 1 to 9 , Figures 10 to 15, the converging section 1111 is a stepped gradient structure, and the converging section 1111 comprises at least one tapered hole 11111, when there are multiple tapered holes 11111, each of the tapered holes 11111 is connected in sequence. That is, the taper of the adjacent tapered holes 11111 is different, the large hole of one tapered hole 11111 is equal to the small hole of another tapered hole 11111, forming a gradient converging structure. The gradient converging structure makes the water channel have small disturbance to water. Figure 5 In the embodiment, the tapered hole 11111 is only one, that is, a one-order convergence; when it is a multi-order convergence, it can make the hole diameter of the first water channel 111 change faster, which is convenient for the design of the generated demand.

[0065] In the embodiment, please refer to Figure 7 , the outer wall of the amplitude transformer 11 is an equal-diameter structure.

[0066] In the embodiment, please refer to Figures 2 to 7 , the outer wall of the amplitude transformer 11 is a variable-diameter structure, and the outer diameter of the amplitude transformer 11 gradually decreases along the water spraying direction. The water inlet end is the large end, and the water outlet end is the small end. In order to have sufficient energy exchange, the amplitude transformer 11 functions to amplify the amplitude value of ultrasonic wave vibration. According to the vibration principle, the diameter should gradually decrease from the large end to the small end. The diameter ratio of the large end to the small end is the amplification coefficient of the amplitude transformer 11. The diameter of the large end is designed to be 8-20 mm, and the optimal value is 10 mm. The diameter of the small end of the amplitude transformer 11 is designed to be 1-5 mm, and the optimal value is 2 mm. At the same time, the water channel inside the amplitude transformer 11 is designed to be a converging water channel. Since the water channel penetrates through the amplitude transformer 11, if the water channel is designed to be an equal-diameter straight-through structure, the diameter should be smaller than the minimum diameter of the amplitude transformer 11. If so, the water channel can only be designed to be an elongated equal-diameter pipeline, which will cause serious attenuation of water pressure. After multiple design verifications, the water channel is designed to be converging from large to small, which basically guarantees the smoothness of the water channel and the processability and implementability of the project.

[0067] In the embodiment, please refer to Figures 1 to 7 , the outer contour of the front end of the amplitude transformer 11 is a blunt structure. The product applied to the oral cavity requires that the instrument avoid sharp corners, sharp edges and other structures that are easy to cause harm. Optionally, the outer contour of the front end of the amplitude transformer 11 is provided with a chamfer structure. Optionally, the outer contour of the front end of the amplitude transformer 11 is an arc structure. The arc structure 114 of the outer contour can be a water-drop-like structure or a spherical structure.

[0068] In the embodiment, please refer to Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 7 , the water outlet 112 is at an angle with the axis of the amplitude transformer 11. Optionally, the front end of the amplitude transformer 11 is a bending structure, and the bending angle of the front end of the amplitude transformer 11 is 0°-90°.

[0069] In this embodiment, please refer to Figure 3 and Figure 6 , the water outlet 112 of the water jet direction and the axis of the boom 11 parallel.

[0070] In this embodiment, please refer to Figures 4 to 7 , the front end of the boom 11 is provided with a standing wave cavity 115, the water inlet of the standing wave cavity 115 is communicated with the first water channel 111, the water outlet 112 and the standing wave cavity 115 are communicated, water enters the standing wave cavity through the back, and then is sprayed out by the water outlet. The standing wave cavity 115 can effectively improve the strength of ultrasonic cavitation, so that the disinfection / sterilization effect is better.

[0071] In this embodiment, please refer to Figure 8 , Figure 9 , Figures 11 to 15 , the spray head assembly further comprises a sheath 12, the sheath 12 is sleeved on the boom 11, and the front end of the boom 11 protrudes from the front end of the sheath 12. The sheath 12 can protect the boom 11.

[0072] In this embodiment, please refer to Figure 15 , the spray head assembly further comprises a sheath 12, the sheath 12 is sleeved on the boom 11, and the front end of the boom 11 protrudes from the front end of the sheath 12. The sheath 12 can protect the boom 11.

[0073] In this embodiment, please refer to Figure 15 , the water jet direction of the water jet 121 and the axis of the boom 11 form an angle. It is convenient to operate when cleaning. Optionally, the water jet 121 gradually increases in aperture along the water jet direction. The gradually increasing aperture can ensure the shape of the sprayed water column. Optionally, the sheath 12 is connected to the boom 11 through an elastic structure. The vibration interference of the sheath 12 to the boom 11 is reduced. Optionally, the sheath 12 is connected to the boom 11 through an elastic rubber ring 122, the elastic rubber ring 122 is sleeved on the front end of the boom 11, and the elastic rubber ring 122 is located in the sheath 12; the sheath can also be connected to the shell.

[0074] In this embodiment, please refer to Figure 15, the elastic sealing structure is arranged between the sheath 12 and the amplitude rod 11, and is used for sealing and isolating the space between the sheath 12 and the amplitude rod 11 from the standing wave cavity 115. Through the arrangement of the elastic sealing structure, the sealing performance can avoid the backflow of water in the standing wave cavity 115 into the interlayer space between the sheath 12 and the amplitude rod 11, and the elastic structure can ensure the dismounting sustainability between the amplitude rod 11 and the sheath 12. The specific dismounting purpose is shown in the next embodiment, and of course the structure can also be designed as a non-dismounting structure. The specific structure can adopt an elastic rubber ring 122, which can be fixed on the inner wall of the sheath 12. The water outlet end of the amplitude rod 11 forms a neck-shaped structure, and the elastic rubber ring 122 and the neck-shaped structure have good sealing performance.

[0075] In the embodiment, please refer to Figures 15 to 20 , the sheath 12 and the shell 21 are detachably mounted. The detachable mounting structure can select the corresponding functional sheath 12 according to the needs during use, and the functional sheath includes: a standard sheath, a periodontal pocket sheath, a dental plaque sheath, an orthodontic sheath, a tongue coating sheath and a dental calculus sheath. The detachable mounting can be in the form of plug-in mounting on the amplitude rod 11, or can be in the form of mounting on the amplitude rod 11 through threads, and the functional sheath can also be directly or indirectly connected with the product shell during mounting. The rear ends of the amplitude rod 11 and the functional sheath are mounted on the shell, and different functional sheaths can be selected according to different use requirements, such as cleaning the oral cavity and the dental crevice, the standard sheath can be used; when the periodontal pocket is cleaned, the periodontal pocket sheath is used; when the orthodontic tooth and the dental plaque are cleaned, the dental plaque and the orthodontic sheath are used; when the tongue coating is cleaned, the tongue coating sheath is used; and when the dental calculus is cleaned, the dental calculus sheath is used. The overall function of the sheath 12 includes protecting the amplitude rod 11 and assisting the amplitude rod 11 in waterway water spraying to provide various oral cleaning functions.

[0076] The standard sheath ( Figure 16 ) is a commonly used functional sheath of the ultrasonic oral irrigator, which provides the functions of changing the waterway water spraying direction of the amplitude rod 11 and adjusting the diameter of the water flow.

[0077] The periodontal pocket sheath ( Figure 17 ) has a soft rubber material pointed cone component at the top end. The pointed end can penetrate into the periodontal pocket, and the soft rubber material can avoid damaging the periodontal pocket tissue. The functional sheath 12 can guide the waterway water of the amplitude rod 11 to the deep part of the periodontal pocket for cleaning. In addition to the sheath embodiment of Figure 17 , it can also be in the form of Figure 21 : the front end of the amplitude rod 11 is located in the sheath, and water is sprayed from the sheath 12. Only the periodontal pocket sheath is arranged at the end of the amplitude rod 11, and the periodontal pocket sheath is not connected with the handle.

[0078] Plaque and orthodontic sheath Figure 18 The top end has a component with bristles. The bristles can vibrate at high frequency under high-speed water impact and clean the orthodontic sheath and plaque attached to the oral cavity surface under the cooperation of external force. In addition to the sheath embodiment, the sheath can also be in the form of Figure 18 The top end has a component with bristles. The bristles can vibrate at high frequency under high-speed water impact and clean the orthodontic sheath and plaque attached to the oral cavity surface under the cooperation of external force. In addition to the sheath embodiment, the sheath can also be in the form of Figure 22 The top end has a component with bristles. The bristles can vibrate at high frequency under high-speed water impact and clean the orthodontic sheath and plaque attached to the oral cavity surface under the cooperation of external force. In addition to the sheath embodiment, the sheath can also be in the form of

[0079] Tongue sheath Figure 19 The top end has a component similar to a small spoon. The small spoon component with a circular arc shape can uniformly diffuse the water jet from the water channel of the amplitude rod 11 to the tongue surface, and clean the tongue plaque on the tongue surface with the smooth arc edge of the small spoon. In addition to the sheath embodiment, the sheath can also be in the form of Figure 19 The top end has a component similar to a small spoon. The small spoon component with a circular arc shape can uniformly diffuse the water jet from the water channel of the amplitude rod 11 to the tongue surface, and clean the tongue plaque on the tongue surface with the smooth arc edge of the small spoon. In addition to the sheath embodiment, the sheath can also be in the form of Figure 23 The top end has a component similar to a small spoon. The small spoon component with a circular arc shape can uniformly diffuse the water jet from the water channel of the amplitude rod 11 to the tongue surface, and clean the tongue plaque on the tongue surface with the smooth arc edge of the small spoon. In addition to the sheath embodiment, the sheath can also be in the form of

[0080] Calculus sheath Figure 20 The top end has a soft rubber component with a claw structure. The claw structure covers the spherical / droplet-shaped water jet end of the amplitude rod 11; the claw structure is made of soft rubber material, is hollow, and exposes part of the water jet end of the amplitude rod 11. The sheath 12 can function to conduct vibration from the amplitude rod 11 to the calculus surface and clean it.

[0081] In this embodiment, please refer to Figure 1 The sheath 12 is detachably installed on the shell 21 through at least one clamping mechanism 3, the clamping mechanism 3 includes a mounting groove 31, a locking pin 32, and an elastic member 33, the locking pin 32 is installed in the mounting groove 31 through the elastic member 33, and the elastic member 33 has a tendency to keep the locking pin 32 pushed out of the mounting groove 31. Optionally, the locking pin 32 is in the radial direction of the sheath 12. Through the design of the clamping mechanism 3, the sheath 12 can be quickly installed and detached. When installing, the rear end of the sheath 12 is inserted into the shell 21, the outer wall of the sheath 12 pushes the locking pin 32 outward, and after insertion, the pin shaft tightly pushes it. When disassembling, the sheath 12 can be pulled out.

[0082] In this embodiment, please refer to Figure 1 The clamping mechanism 3 has multiple clamping mechanisms 3, and each clamping mechanism 3 is arranged at equal intervals in the circumferential direction of the sheath 12. The stress in the circumferential direction is more uniform, and the clamping points are increased, so that the clamping force is greater.

[0083] In this embodiment, please refer to Figure 1The outer circumferential surface of the sheath 12 is provided with an annular groove 123, and the lock pin 32 can be inserted into the annular groove 123 when locked.

[0084] In the embodiment, as shown in Figure 1 The handle assembly further comprises a water pump assembly 23, a water tank 24 and a water suction pipe 25 in the shell 21, the water suction pipe 25 is inserted into the water tank 24, and the water suction pipe 25 is directly communicated with the water channel of the amplitude lever 11; or as shown in Figure 1 The water suction pipe 25 is communicated with the water channel of the transducer 22, and the water channel of the transducer 22 is communicated with the water channel of the amplitude lever 11.

[0085] In the embodiment, as shown in Figure 1 The water suction pipe 25 is provided with a valve 251. The valve 251 can be an electromagnetic valve, which is convenient to communicate with the circuit board and finally controlled by a button.

[0086] In the embodiment, as shown in Figure 1 The water pump assembly 23 comprises a water pump 231, a motor 232 and a speed changer 233, the motor 232 drives the input shaft of the speed changer 233 to rotate, and the water pump 231 is connected with the output shaft of the speed changer 233. Through the setting of the speed changer 233, different speed requirements can be designed.

[0087] In the embodiment, as shown in Figure 1 The handle assembly further comprises a power module 26 in the shell 21, the power module 26 is a wired rechargeable module, a wireless rechargeable module or a non-rechargeable module. When it is a rechargeable module, it is convenient to use repeatedly, and when it is a non-rechargeable module, it can be directly plugged into a working mode or in the form of a disposable battery.

[0088] In the embodiment, as shown in Figure 1 The handle assembly further comprises a circuit board 27 and a control button 28, and the circuit board 27 and the control button 28 are electrically connected. It is convenient to control the working state of the ultrasonic oral irrigator.

[0089] In the embodiment, as shown in Figure 1 The handle assembly further comprises an indicator light 29, and the circuit board 27 and the indicator light 29 are electrically connected. The working state can be seen more directly, so as to facilitate the operator to use.

[0090] In the embodiment, the handle assembly further comprises a heating module 30 for heating water. The heating of water can be performed in the water tank 24 or the water suction pipe 25. The heating of water can achieve better use experience and better sterilization effect. The heating module 30 can be an electric heating wire or an electromagnetic induction heating module, and the power of the heating module 30 is supplied by the power module 26.

[0091] In summary, the water channel is arranged on the amplitude lever 11, so that the water channel has simple structure and is convenient to manufacture, the water pressure is not easy to attenuate, and the amplitude lever 11 can better cavitate water when vibrating, thereby having better tooth cleaning effect. Therefore, the present application effectively overcomes the shortcomings of the prior art and has high industrial utilization value.

[0092] The above embodiments only exemplarily illustrate the principles and effects of the present application, but are not used to limit the present application. Any person skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the present application. Therefore, all equivalent modifications or changes completed by those skilled in the art without departing from the spirit and technical thought of the present application should be covered by the claims of the present application.

Claims

1. An ultrasonic oral irrigator, characterized in that, include: A nozzle assembly includes an amplitude transformer and a sheath. The amplitude transformer has a first water channel inside, an outlet at its front end, and an inlet at its rear end. The first water channel extends from the inlet to the outlet and includes a converging section whose aperture decreases along the spray direction. The sheath is fitted over the amplitude transformer, and a standing wave cavity and a spray nozzle communicating with the standing wave cavity are located at the front end of the sheath. The front end of the amplitude transformer is located inside the standing wave cavity, and the outlet of the amplitude transformer is communicating with the standing wave cavity. A handle assembly, comprising a housing and a transducer, wherein the rear end of the amplitude rod is connected to the transducer, the transducer is installed inside the housing, and the front end of the amplitude rod extends out of the housing.

2. The ultrasonic oral irrigator according to claim 1, characterized in that: The transducer is mounted inside the housing via a rigid or elastic structure.

3. The ultrasonic oral irrigator according to claim 1, characterized in that: The outlet is a conical hole whose diameter gradually increases along the direction of water spraying, and the converging section and the outlet form a water channel structure that first contracts and then expands.

4. The ultrasonic oral irrigator according to claim 3, characterized in that: The convergence segment has a stepped, gradually changing structure.

5. The ultrasonic oral irrigator according to claim 1, characterized in that: The outer wall of the amplitude transformer is a constant diameter structure; Alternatively, the outer wall of the amplitude rod may be a variable diameter structure, with the outer diameter of the amplitude rod gradually decreasing along the water spray direction.

6. The ultrasonic oral irrigator according to claim 1, characterized in that: The outer contour of the front end of the amplitude transformer is a blunt shape.

7. The ultrasonic oral irrigator according to claim 6, characterized in that: The outer contour of the front end of the amplitude rod has a chamfered structure, or the outer contour of the front end of the amplitude rod has an arc-shaped structure.

8. The ultrasonic oral irrigator according to claim 1, characterized in that: The water spray direction of the outlet is parallel to or at an angle to the axis of the amplitude transformer.

9. The ultrasonic oral irrigator according to claim 1, characterized in that: The front end of the amplitude transformer has a bent structure, and the bending angle of the front end of the amplitude transformer is 0°~90°.

10. The ultrasonic oral irrigator according to claim 1, characterized in that: The spray direction of the nozzle forms an angle with the axis of the amplitude transformer.

11. The ultrasonic oral irrigator according to claim 1, characterized in that: The front end of the luffing rod is located inside the sheath, and water is sprayed out from the sheath; an elastic rubber ring is provided on the inner wall of the front part of the sheath, the elastic rubber ring is fitted outside the luffing rod, and the rear end of the sheath is connected to the housing or supported on the luffing rod.

12. The ultrasonic oral irrigator according to claim 11, characterized in that: An elastic sealing structure is also provided between the sheath and the amplitude transformer, which is used to seal and isolate the space between the sheath and the amplitude transformer from the standing wave cavity.

13. The ultrasonic oral irrigator according to claim 1, characterized in that: The front end of the amplitude rod is located inside the sheath and water is sprayed out from the sheath; the sheath and the housing are detachably connected or the sheath and the housing are not detachably connected.

14. The ultrasonic oral irrigator according to claim 13, characterized in that: The sheath is detachably mounted on the housing via at least one clamping mechanism. The clamping mechanism includes a mounting groove, a locking pin, and an elastic element. The locking pin is mounted in the mounting groove via the elastic element. An annular groove is provided on the outer circumferential surface of the sheath. The locking pin is pushed into the annular groove under the action of the elastic element.

15. The ultrasonic oral irrigator according to any one of claims 1-14, characterized in that: The handle assembly also includes a water pump assembly, a water tank, and a suction pipe located within the housing. The suction pipe is inserted into the water tank and is equipped with a valve. The suction pipe is directly connected to the water channel of the amplitude transformer; or the suction pipe is connected to the water channel of the transducer, and the water channel of the transducer is connected to the water channel of the amplitude transformer.

16. The ultrasonic oral irrigator according to claim 15, characterized in that: The water pump assembly includes a water pump, a motor, and a transmission. The motor drives the input shaft of the transmission to rotate, and the water pump is connected to the output shaft of the transmission.

17. The ultrasonic oral irrigator according to claim 15, characterized in that: The handle assembly also includes a power module located within the housing, which can be a wired rechargeable module, a wireless rechargeable module, or a non-rechargeable module.

18. The ultrasonic oral irrigator according to claim 15, characterized in that: The handle assembly also includes a circuit board and control buttons, which are electrically connected.

19. The ultrasonic oral irrigator according to claim 18, characterized in that: The handle assembly also includes an indicator light, and the circuit board and the indicator light are electrically connected.

20. The ultrasonic oral irrigator according to claim 15, characterized in that: The handle assembly also includes a heating module for heating water.

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