Spray head, nozzle, oral care equipment and oral care system

Abstract

The utility model provides a spray head, a nozzle, oral care equipment and an oral care system. Wherein the spray head comprises a spray head main body and a transducer, and the spray head main body is provided with a liquid spraying hole and a first accommodating cavity and / or a first flow channel communicated with the liquid spraying hole; the transducer is arranged in the first containing cavity and makes direct contact or indirect contact with liquid passing through the first containing cavity and / or the first flow channel. According to the scheme provided by the invention, the transducer is arranged in the spray head of the nozzle, the transducer can emit the ultrasonic waves to the cleaning fluid in the first accommodating cavity and / or the first flow channel in the spray head main body, and the ultrasonic waves can generate a cavitation effect in the cleaning fluid, so that the cleaning power of the oral care equipment is improved; therefore, the oral care equipment can generate stronger cleaning capability under the condition that the jet flow pressure of the cleaning liquid is smaller. Therefore, according to the scheme of the invention, the injury can be effectively reduced while the organs or tissues of the human body are effectively cleaned, and the probability of stabbing pain and bleeding is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of personal cleaning devices, and in particular to a spray head, a nozzle, an oral care device and an oral care system. Background Art

[0002] Currently, most nursing equipment uses the impact force of cleaning fluid to clean bacteria and dirt on the surface or inside of human organs or tissues.

[0003] In order to effectively clean bacteria and dirt, the cleaning fluid sprayed by the nursing equipment usually has a large impact force. However, the cleaning fluid with a large impact force can easily damage human organs or tissues, causing stinging and bleeding. Utility Model Content

[0004] The present application provides a spray head, a nozzle, an oral care device and an oral care system, which can effectively clean human organs or tissues while effectively reducing damage and lowering the probability of stinging and bleeding.

[0005] In a first aspect, the present application provides a nozzle for use in an oral care device, comprising:

[0006] A nozzle body, wherein the nozzle body has a liquid spraying hole and a first accommodating cavity and / or a first flow channel communicated with the liquid spraying hole;

[0007] The ultrasonic transducer is disposed in the first accommodating chamber and is in direct or indirect contact with the liquid passing through the first accommodating chamber and / or the first flow channel.

[0008] The solution provided by the present application is to set an ultrasonic transducer in the nozzle of the nozzle. The ultrasonic transducer can emit ultrasonic waves to the cleaning liquid in the first accommodating cavity and / or the first flow channel inside the nozzle body. The ultrasonic wave can cause cavitation in the cleaning liquid. The cleaning liquid vibrates under the influence of cavitation to produce tens of thousands of tiny bubbles. These bubbles are formed by the longitudinal propagation of ultrasonic waves and move to the target cleaning area with the jet of the cleaning liquid. Compared with the conventional method of directly flushing the target cleaning area with the cleaning liquid, the jet after ultrasonic cavitation has a higher cleaning power, so that the oral care device can produce a stronger cleaning ability when the jet pressure of the cleaning liquid is small. It can be seen that the solution of the present application can effectively reduce damage and reduce the probability of stinging and bleeding while achieving effective cleaning of human organs or tissues.

[0009] In conjunction with the first aspect, in some possible implementations, the transducer is an ultrasonic transducer. An acoustic transducer is a device that converts electromagnetic energy into acoustic energy, and is usually made of magnetostrictive material, and has the advantages of high energy conversion efficiency, high working reliability and high safety.

[0010] In combination with the first aspect and the above implementations, in some possible implementations, the ultrasonic transducer is a piezoelectric ceramic. Piezoelectric ceramic elements have the advantages of high sensitivity, low power consumption, simple manufacturing process, low cost, and moisture and high temperature resistance.

[0011] In combination with the first aspect and the above implementations, in some possible implementations, the surface of the piezoelectric ceramic is coated with a protective layer. By coating the protective layer, not only can the working reliability of the piezoelectric ceramic be improved, the probability of the piezoelectric ceramic being broken be reduced, but also the working surface of the piezoelectric ceramic be prevented from being corroded.

[0012] In combination with the first aspect and the above implementations, in some possible implementations, the transducer is disposed on a side of the first accommodating chamber away from the liquid spray hole. The cleaning liquid transported by the liquid delivery channel of the nozzle can pass through the surface of the transducer, and the cleaning liquid cavitated by the transducer is sprayed out from the liquid spray hole under pressure.

[0013] In combination with the first aspect and the above implementations, in some possible implementations, the transducer is coaxially arranged with the liquid spray hole. The coaxially arranged transducer and liquid spray hole can prevent the energy generated by the transducer from being blocked by obstacles and attenuating, so that the energy generated by the transducer acts on the target cleaning area as much as possible, thereby improving the cleaning effect.

[0014] In combination with the first aspect and the above implementations, in some possible implementations, the distance between the working surface of the transducer and the end surface of the liquid spray hole is greater than or equal to 2 mm and less than or equal to 20 mm. Within the distance range of 2 to 20 mm, the tiny bubbles generated by the transducer after cavitation of the cleaning liquid can not only improve the cleaning effect on the target cleaning area, but also avoid irritation to the target cleaning area.

[0015] In combination with the first aspect and the above implementations, in some possible implementations, the wall of the first accommodating cavity is provided with an opening on one side away from the liquid spray hole; the nozzle further comprises an end cover connected to the nozzle body and used to cover the opening. By providing the opening and the end cover, the transducer can be conveniently installed on the nozzle body from the opening, and when the transducer is damaged, it is also convenient to maintain and replace the transducer.

[0016] In combination with the first aspect and the above-mentioned implementations, in some possible implementations, the nozzle further includes: a transmission member, one side of which is connected to the transducer, and the other side of which is in contact with the liquid flow in the first accommodating chamber, and the transducer can transmit energy to the liquid flow in the first accommodating chamber through the transmission member. By providing the transmission member, when the transducer is in indirect contact with the liquid in the first accommodating chamber and / or the first flow channel, the loss of energy or vibration generated by the transducer during the transmission process can be reduced.

[0017] In combination with the first aspect and the above-mentioned implementations, in some possible implementations, the nozzle further includes: a flow guide, which is arranged in the first accommodating chamber; the flow guide includes a liquid inlet and a liquid outlet, the liquid inlet is connected to the liquid outlet and together forms a second accommodating chamber, the second accommodating chamber is connected to the first flow channel on one side thereof, the liquid outlet is provided with a liquid outlet, and the liquid outlet is connected to the liquid injection hole. When the transducer emits energy to the cleaning liquid in the flow guide, the energy can be gathered in the flow guide and act on human organs or tissues along with the cleaning liquid, thereby causing the cleaning liquid to produce a significant cavitation effect, further improving the cleaning power of the oral care device.

[0018] In combination with the first aspect and the above implementations, in some possible implementations, the liquid outlet includes a second flow channel and a third flow channel in sequence along the axial direction of the liquid jet hole, and the cross-sectional area of ​​the second flow channel is larger than the cross-sectional area of ​​the third flow channel. The cross-sectional area of ​​the third flow channel is smaller than the cross-sectional area of ​​the second flow channel, so that the energy emitted by the transducer can be gathered in the flow guide, reducing energy loss and improving energy density.

[0019] In combination with the first aspect and the above implementations, in some possible implementations, the liquid injection hole includes: a fourth flow channel, and the cross-sectional area of ​​the fourth flow channel is smaller than the cross-sectional area of ​​the third flow channel. The cross-sectional area of ​​the fourth flow channel of the liquid injection hole is smaller than the cross-sectional area of ​​the third flow channel of the flow guide, so that the energy transmitted to the liquid injection hole can be concentrated, further reducing energy loss and improving energy density.

[0020] In combination with the first aspect and the above implementations, in some possible implementations, the liquid injection hole further includes: a fifth flow channel, and the cross-sectional area of ​​the fifth flow channel is smaller than the cross-sectional area of ​​the fourth flow channel. The cross-sectional area of ​​the fifth flow channel of the liquid injection hole is smaller than the cross-sectional area of ​​the fourth flow channel, so that the energy transmitted to the liquid injection hole can be further concentrated in the liquid injection hole, thereby minimizing energy loss and improving energy density.

[0021] In combination with the first aspect and the above implementations, in some possible implementations, the guide member and the nozzle body are detachably connected or are an integral component. The detachably connected guide member and nozzle body can facilitate replacement of the guide member, while the integrally connected guide member and nozzle body can facilitate processing and manufacturing of the guide member and nozzle body.

[0022] In a second aspect, the present application also provides a nozzle, comprising:

[0023] The nozzle as described in any one of the first aspects above; and

[0024] A nozzle is connected to the nozzle, and a connecting portion is provided at one end of the nozzle away from the nozzle.

[0025] The nozzle tube provides a mounting base for the nozzle and provides cleaning fluid to the nozzle.

[0026] In conjunction with the first aspect, in some possible implementations, the nozzle and the nozzle are detachably connected or are an integral component. The nozzle and the nozzle can be detachably connected or are an integral component. It is understandable that the detachable connection method can facilitate the replacement of the nozzle after it is damaged, while the nozzle and the nozzle as an integral component are more convenient to process.

[0027] In a third aspect, the present application also provides an oral care device, comprising:

[0028] The nozzle as described in any one of the second aspects above; and

[0029] The device body has a matching portion, and the device body is connected to the connecting portion of the nozzle through the matching portion. The nozzle and the device body are connected through the connecting portion and the matching portion, and can be disassembled, thereby facilitating maintenance such as cleaning of the nozzle and replacement of the nozzle after damage.

[0030] In conjunction with the second aspect, in some possible implementations, the nozzle further includes:

[0031] An electrical connector is arranged at the connecting portion, and is electrically connected to the transducer; the electrical connector is also electrically connected to the device body, so that the device body supplies power to the transducer through the electrical connector.

[0032] By providing an electrical connector, indirect power supply from the device body to the transducer can be achieved.

[0033] In combination with the second aspect and the above-mentioned implementations, in some possible implementations, the device body is provided with a power supply component, and the power supply component is electrically connected to the transducer to supply power to the transducer.

[0034] The power supply component of the device body can be electrically connected to the transducer through a cable to directly supply power to the transducer.

[0035] In a fourth aspect, the present application also provides an oral care system, comprising:

[0036] The oral care device according to any one of the third aspects above; and

[0037] A charging assembly is used to supply power to the oral care device.

[0038] The charging component can directly supply power to the oral care device or charge the power supply battery of the oral care device.

[0039] In combination with the third aspect and the above-mentioned implementations, in some possible implementations, the charging component is used to supply power to the device body and is capable of supplying power to the transducer.

[0040] The charging component can independently supply power to the device body, and can also additionally supply power to the transducer. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the embodiments below. The accompanying drawings are only for the purpose of illustrating the embodiments and are not to be considered as limiting the present application. Moreover, the same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0042] Figure 1 It is a schematic diagram of the structure of a nozzle provided in an embodiment of the present application;

[0043] Figure 2 yes Figure 1 A cross-sectional view of the first structure of the local part Ⅰ in the nozzle;

[0044] Figure 3 yes Figure 1 A cross-sectional view of the second structure of the nozzle part Ⅰ;

[0045] Figure 4 yes Figure 3 A cross-sectional view of a flow guide in a nozzle;

[0046] Figure 5 yes Figure 3 Schematic diagram of the explosion structure of local I in the nozzle.

[0047] The description of the reference numerals in the figures is as follows:

[0048] 1—Nozzle;

[0049] 100—Sprinkler;

[0050] 110—Sprayer head body;

[0051] 111—liquid spray hole; 1111—fourth flow channel; 1112—fifth flow channel;

[0052] 112—first accommodating cavity; 1121—opening; 113—first flow channel;

[0053] 120—Transducer;

[0054] 130—end cover;

[0055] 140—flow guide;

[0056] 141—liquid inlet;

[0057] 142—liquid outlet; 1421—second flow channel; 1422—third flow channel;

[0058] 143—second accommodating chamber;

[0059] 200—nozzle; 201—infusion channel. DETAILED DESCRIPTION

[0060] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0061] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0062] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0063] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0064] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two), similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0065] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0066] The surface or interior of human organs or tissues is prone to breeding bacteria or attached dirt. At present, cleaning liquid sprayed by devices such as tooth irrigators and nasal irrigators is often used to rinse human organs or tissues.

[0067] At present, in order to effectively clean bacteria and dirt, the impact force of cleaning fluid is usually large. However, cleaning fluid with large impact force easily damages human organs or tissues, causing stinging and bleeding.

[0068] For example, for the dental plaque growing on the surface of teeth in the human oral cavity and the food residues accumulated in the gaps between teeth, when a water flosser is used to rinse, the cleaning liquid sprayed by the water flosser can easily damage the gums, causing gum irritation and bleeding.

[0069] In order to solve the above technical problems, the embodiments of the present application provide a nozzle, a nozzle, an oral care device and an oral care system, which can effectively clean human organs or tissues while effectively reducing damage and the probability of stinging and bleeding. The nozzle, nozzle, oral care device and oral care system provided in the embodiments of the present application are introduced in detail below.

[0070] The oral care system provided in the embodiment of the present application includes an oral care device that can effectively clean human organs or tissues. The oral care device includes but is not limited to a water flosser, an electric toothbrush or other handheld oral care devices. The embodiment of the present application does not specifically limit the oral care device.

[0071] See also Figure 1 The oral care device includes a nozzle 1 and a device body (not shown in the figure). The device body may include a flushing pump for providing a cleaning liquid to the nozzle 1. The cleaning liquid may be water or other liquids with a cleaning effect.

[0072] The nozzle 1 may include a nozzle 100 and a nozzle 200, and the nozzle 200 may be connected to the nozzle 100. Specifically, the nozzle 100 and the nozzle 200 may be detachably connected or may be an integral component. It is understandable that the detachable connection method may facilitate the replacement of the nozzle 100 after it is damaged, and the nozzle 100 and the nozzle 200 as an integral component are more convenient to process. A connecting portion may be provided at one end of the nozzle 200 away from the nozzle 100. The device body may have a matching portion, and the device body may be connected to the connecting portion of the nozzle 1 through the matching portion. Such a configuration may facilitate the cleaning and other maintenance of the nozzle 1 and the replacement of the nozzle 1 after it is damaged. Among them, the connection method between the connecting portion and the matching portion may be a snap-on connection, a threaded connection, a magnetic connection or other connection method that is convenient for the user to disassemble and install, which is not limited here.

[0073] See also Figure 2 The nozzle 100 may include a nozzle body 110 and a transducer 120. The nozzle body 110 may have a liquid injection hole 111 and a first accommodating cavity 112 and / or a first flow channel 113 connected to the liquid injection hole 111; the transducer 120 may be disposed in the first accommodating cavity 112 and directly or indirectly contact the liquid flow passing through the first accommodating cavity 112 and / or the first flow channel 113.

[0074] In some embodiments, a transducer 120 is provided in the nozzle 100 of the nozzle 1. The transducer 120 can cause the cleaning liquid in the first accommodating chamber 112 and / or the first flow channel 113 inside the nozzle body 110 to produce cavitation. The cleaning liquid vibrates under the influence of cavitation to produce tens of thousands of tiny bubbles. These bubbles are formed by the longitudinal propagation of ultrasonic waves and move to the target cleaning area with the jet of the cleaning liquid. Compared with the conventional method of directly flushing the target cleaning area with the cleaning liquid, the jet after ultrasonic cavitation has a higher cleaning power, so that the oral care device can also produce a stronger cleaning ability when the jet pressure of the cleaning liquid is relatively low. It can be seen that the present application scheme can effectively reduce damage and reduce the probability of stinging and bleeding while achieving effective cleaning of human organs or tissues.

[0075] In some embodiments, the oral care device of the embodiment of the present application acts on the oral cavity, which can effectively remove dental plaque on the surface of teeth and food residues accumulated in the gaps between teeth, reduce gum damage, and reduce the probability of gum and bleeding.

[0076] In some embodiments, the transducer 120 can be in direct contact with the liquid in the first accommodating chamber 112 and / or the first flow channel 113. When the oral care device sprays liquid through the nozzle 100 on the nozzle 1, the transducer 120 can directly act on the liquid in the first accommodating chamber 112 and / or the first flow channel 113. Since the transducer 120 can be in direct contact with the liquid in the first accommodating chamber 112 and / or the first flow channel 113, the energy loss of the transducer 120 during the energy transmission process can be reduced. On the one hand, it can effectively improve the working energy efficiency of the transducer 120, and on the other hand, it can improve the cleaning power of the jet ejected by the oral care device.

[0077] In some embodiments, the transducer 120 may be an ultrasonic transducer. An ultrasonic transducer is a device that converts electromagnetic energy into acoustic energy, and is usually made of magnetostrictive material. For example, the ultrasonic transducer may be a piezoelectric ceramic. Piezoelectric ceramics can utilize the piezoelectric effect of their materials to convert the acoustic energy of a power ultrasonic frequency source into mechanical vibrations, and radiate ultrasonic waves into the liquid through the working surface. The microbubbles in the liquid can maintain vibration under the action of ultrasonic waves. When the sound pressure or sound intensity reaches a critical value, the bubbles will expand rapidly and then suddenly close. A shock wave is generated at the moment of bubble closure, causing extremely high pressure and temperature to be instantly generated around the bubbles, resulting in a cavitation effect, which repeatedly impacts the dirt, thereby producing a strong cleaning ability even when the impact force of the cleaning fluid is small.

[0078] In some embodiments, the contour shape of the piezoelectric ceramic can be the same as or similar to the cross-sectional contour shape of the first accommodating cavity 112. It is understood that if the contour shape of the piezoelectric ceramic can be the same as or similar to the cross-sectional contour shape of the first accommodating cavity 112, the piezoelectric ceramic can be more easily installed in the first accommodating cavity 112. Exemplarily, the piezoelectric ceramic is in the shape of a disc. It is understood that the shape of the piezoelectric ceramic is not limited thereto. In other embodiments, the piezoelectric ceramic can also be in the shape of a rectangle, annular or other structure that can realize the function of an ultrasonic transducer. In addition, designers can select piezoelectric ceramics of different thicknesses according to actual needs, which is not specifically limited here.

[0079] Since piezoelectric ceramics have high hardness and brittleness, in order to improve the working reliability of piezoelectric ceramics and reduce the probability of piezoelectric ceramics breaking, in some embodiments of the present application, the surface of the piezoelectric ceramics is coated with a protective layer.

[0080] It is understandable that for piezoelectric ceramics with a protective layer, the piezoelectric ceramics are isolated from the liquid flow, that is, they are in indirect contact, while for piezoelectric ceramics without a protective layer, the piezoelectric ceramics are in direct contact with the liquid flow and are easily corroded by the liquid flow. Therefore, the protective layer can also prevent the working surface of the piezoelectric ceramic from being corroded.

[0081] For example, the protective layer can be formed by coating a protective liquid on the surface of the piezoelectric ceramic. Designers can select a suitable protective liquid according to actual needs. The embodiment of the present application does not specifically limit the material of the protective liquid, the thickness of the protective layer formed by the protective liquid, and the hardness of the protective layer. The protective layer can effectively protect the piezoelectric ceramic and prevent the piezoelectric ceramic from being brittle and cracked under the impact of water flow.

[0082] Exemplarily, the protective layer can be formed on the surface of the piezoelectric ceramic by coating or deposition. The protective film has a protective effect on the piezoelectric ceramic. Designers can select suitable coating materials or deposition materials to form a protective film on the surface of the piezoelectric ceramic according to actual needs, and no specific limitation is made here.

[0083] See also Figure 2 and Figure 3 In some embodiments, the transducer 120 may be disposed on a side of the first accommodating chamber 112 away from the liquid spraying hole 111. In this way, the cleaning liquid transported by the liquid delivery channel 201 of the nozzle 200 may pass through the surface of the transducer 120, and the cleaning liquid cavitated by the transducer 120 is sprayed out from the liquid spraying hole 111 under pressure.

[0084] Please continue to see Figure 2 and Figure 3 In some embodiments, the transducer 120 may be coaxially arranged with the liquid spray hole 111. Such an arrangement can prevent the energy generated by the transducer 120 from being blocked by obstacles and attenuated, so that the energy generated by the transducer 120 can act on the target cleaning area as much as possible, thereby improving the cleaning effect.

[0085] The cavitation effect of the transducer 120 on the cleaning liquid will gradually weaken as the distance increases. When the transducer 120 is far away from the liquid spray hole 111, the cavitation effect will be affected. When the transducer 120 is close to the liquid spray hole 111, the tiny bubbles generated by the transducer 120 after cavitation of the cleaning liquid will produce a strong stimulation to the target cleaning area. In some embodiments of the present application, the distance d between the working surface of the transducer 120 and the end surface of the liquid spray hole 111 can be greater than or equal to 2mm and less than or equal to 20mm. Within the distance range of 2 to 20mm, the tiny bubbles generated by the transducer 120 after cavitation of the cleaning liquid can not only improve the cleaning effect on the target cleaning area, but also avoid stimulation to the target cleaning area. For example, the distance d between the working surface of the transducer 120 and the end surface of the liquid spray hole 111 can be 4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, etc.

[0086] It is understandable that when the working power of the transducer 120 is relatively large, the distance between the transducer 120 and the end surface of the liquid injection hole 111 can be adaptively increased according to actual needs, and the specific increased distance is not limited.

[0087] See also Figure 2 , Figure 3 and Figure 5 In some embodiments of the present application, the side of the cavity wall of the first accommodating cavity 112 away from the liquid spraying hole 111 may be provided with an opening 1121; the nozzle 100 may further include an end cap 130, which may be connected to the nozzle body 110 to cover the opening 1121. By providing the opening 1121 and the end cap 130, the transducer 120 may be conveniently installed on the nozzle body 110 from the opening 1121, and when the transducer 120 is damaged, the end cap 130 of the opening 1121 also facilitates the maintenance and replacement of the transducer 120.

[0088] In some embodiments, the end cap 130 may be provided with a sealing structure. When the end cap 130 is connected to the nozzle body 110, the end cap 130 can seal the side of the first accommodating chamber 112 away from the spray hole 111, thereby preventing the cleaning liquid passing through the first accommodating chamber 112 from leaking from the side of the transducer 120 away from the spray hole 111.

[0089] In some embodiments, the transducer 120 may be in indirect contact with the liquid in the first accommodating chamber 112 and / or the first flow channel 113. If the transducer 120 is in indirect contact with the liquid in the first accommodating chamber 112 and / or the first flow channel 113, the energy or vibration generated by the transducer will be greatly lost during the transmission process. In this embodiment, the nozzle 100 may also include a transmission member (not shown in the figure), one side of the transmission member may be connected to the transducer 120, and the other side of the transmission member may be in contact with the liquid flow in the first accommodating chamber 112. The transducer 120 may transmit energy to the liquid flow in the first accommodating chamber 112 through the transmission member. Exemplarily, the transmission member may be solid, colloid or in other forms. The transmission member may fill the gap between the transducer 120 and the liquid flow to reduce the energy loss of the transducer 120.

[0090] It is worth noting that in some embodiments of the present application, the nozzle 100 may also include a guide member 140, which is arranged in the first accommodating chamber 112; the guide member 140 includes a liquid inlet portion 141 and a liquid outlet portion 142, the liquid inlet portion 141 is connected to the liquid outlet portion 142 and together forms a second accommodating chamber 143, the second accommodating chamber 143 is connected to the first flow channel 113 on one side close to the first flow channel 113, and the liquid outlet portion 142 is provided with a liquid outlet, which is connected to the liquid spray hole 111.

[0091] In some embodiments, the liquid inlet 141 and the liquid outlet 142 can be separately arranged, and the liquid flows into the guide member 140 from the liquid inlet 141 and flows out of the nozzle 100 from the liquid outlet 142. By separately arranging the liquid inlet 141 and the liquid outlet 142, the user can conveniently select the liquid inlet 141 and the liquid outlet 142 of different sizes or different calibers according to the needs, thereby increasing the flexibility of use for the user.

[0092] In some embodiments, the liquid inlet portion 141 and the liquid outlet portion 142 may be integrally provided. The integral provision can facilitate a user to accurately determine the installation position of the guide member 140 , thereby improving the convenience of installation of the guide member 140 .

[0093] The cleaning liquid transported from the infusion channel 201 of the nozzle 200 enters the second accommodating chamber 143 through the liquid inlet 141, flows into the liquid spray hole 111 from the liquid outlet of the liquid outlet 142, and is finally sprayed from the liquid spray hole 111 to the organ or tissue to be cleaned.

[0094] In the embodiment of the present application, the transducer 120 can emit energy to the cleaning liquid in the guide member 140. The energy can be gathered in the guide member 140 and act on human organs or tissues along with the cleaning liquid, thereby causing the cleaning liquid to produce a significant cavitation effect, further improving the cleaning power of the oral care device.

[0095] It should be noted that when the nozzle 100 does not include the flow guide 140, Figure 2 As shown, the first accommodating cavity 112 and the first flow channel 113 of the nozzle body 110 can be the same space or a connected space. When the nozzle 100 includes a flow guide 140, as shown in FIG. Figure 3 and Figure 4 As shown, the guide member 140 may be disposed in the first accommodation cavity 112, and a portion of the first flow channel 113 is filled by the guide member 140. The second accommodation cavity 143 inside the guide member 140 may overlap with the unfilled portion of the first flow channel 113.

[0096] In order to improve the cavitation effect of the cleaning liquid, the present application also optimizes the design of the liquid outlet 142, so that the liquid outlet 142 presents a structure with a reduced flow area as a whole. In this way, the energy emitted by the transducer 120 can be concentrated, energy loss can be reduced, and energy density can be increased.

[0097] See also Figure 4 In some embodiments of the present application, the liquid outlet 142 may include a second flow channel 1421 and a third flow channel 1422 in sequence along the axial direction of the liquid spray hole 111 , and the cross-sectional area of ​​the second flow channel 1421 is greater than the cross-sectional area of ​​the third flow channel 1422 .

[0098] It can be understood that the second flow channel 1421 and the third flow channel 1422 of the liquid outlet 142 are the unfilled parts of the second accommodating cavity 143 and the first flow channel 113 of the flow guide 140. The second flow channel 1421 and the third flow channel 1422 can be conical flow channels.

[0099] For example, in some embodiments of the present application, the liquid injection hole 111 may also include a fourth flow channel 1111, and the cross-sectional area of ​​the fourth flow channel 1111 may be less than or equal to the cross-sectional area of ​​the third flow channel 1422. In some other embodiments of the present application, the liquid injection hole 111 may also include a fifth flow channel 1112, and the cross-sectional area of ​​the fifth flow channel 1112 may be less than or equal to the cross-sectional area of ​​the fourth flow channel 1111.

[0100] In some embodiments, the cross-sectional areas of the second flow channel 1421, the third flow channel 1422, the fourth flow channel 1111 and the fifth flow channel 1112 decrease in sequence. It is understood that when the above four flow channels are provided at the same time, the oral care device can produce an optimal cavitation effect.

[0101] Considering that different materials have different absorption effects on ultrasonic waves of different frequencies, in some embodiments of the present application, guide pieces 140 made of different materials can be selected for ultrasonic waves of different frequencies. Exemplarily, the guide piece 140 can be a hard plastic piece or a soft silicone piece. For example, when the transducer 120 emits high-frequency ultrasonic waves, a guide piece 140 made of hard plastic that absorbs little high-frequency ultrasonic energy can be selected; when the transducer 120 emits low-frequency ultrasonic waves, a guide piece 140 made of soft silicone that absorbs little low-frequency ultrasonic energy can be selected. With such a configuration, the absorption of ultrasonic energy by the guide piece 140 can be reduced, thereby improving the cavitation effect of the oral care device.

[0102] In order to facilitate the replacement of the flow guide 140, the flow guide 140 can be detachably connected to the nozzle body 110, for example, by means of a snap or the like. Of course, the flow guide 140 and the nozzle body 110 can also be an integral component, for example, they can be integrally injection molded. In this way, the processing and manufacturing of the flow guide 140 and the nozzle body 110 can be facilitated. The flow guide 140 and the nozzle body 110 as an integral component are suitable for ultrasonic waves in a specific frequency range. Since the frequency of ultrasonic waves is specific, it is no longer necessary to replace the flow guide 140.

[0103] In some embodiments, the material of the guide member 140 is the same as that of the nozzle body 110. During the manufacturing process of the nozzle 1, the guide member 140 and the nozzle body 110 can be formed into an integrated structure by injection molding.

[0104] In some embodiments, the material of the guide member 140 is different from that of the nozzle body 110. During the manufacturing process of the nozzle 1, the guide member 140 can be connected to the nozzle body 110 by welding or two-color injection molding.

[0105] The transducer 120 can be powered by a variety of power supply methods such as direct power supply and indirect power supply. For indirect power supply, the nozzle 1 can also include an electrical connector, which is arranged at the connection part and is electrically connected to the transducer 120; the electrical connector is also electrically connected to the device body, so that the device body can power the transducer 120 through the electrical connector. Exemplarily, the device body can include a main control board and a power supply battery, and the main control board is electrically connected to the power supply battery; the side wall of the nozzle 200 is provided with a wiring hole; the electrical connector is a probe arranged at one end of the nozzle 200 away from the nozzle 100 and corresponding to the wiring hole; the ultrasonic transducer 120 is electrically connected to the probe through a cable arranged in the wiring hole, and the probe is electrically connected to the main control board. Exemplarily, the connection part of the nozzle 1 is provided with a gold-plated probe, and the gold-plated probe is electrically connected to the transducer 120 through a cable arranged in the nozzle 1. Exemplarily, a wireless coil may be provided at one end of the nozzle 200 close to the device body, and when the transducer 120 is working, the device body wirelessly supplies power to the transducer 120 through the wireless coil.

[0106] For direct power supply, the device body is provided with a power supply component, which is electrically connected to the transducer 120 and can supply power to the transducer 120. Exemplarily, the power supply component can be directly electrically connected to the transducer 120 through a cable.

[0107] Finally, the oral care system may further include a charging component, which is used to supply power to the oral care device. The charging component may include a charging seat, on which a groove for placing the oral care device is formed. The charging seat may be provided with a rechargeable battery or connected to an external power source via a cable to supply power to the oral care device. The charging component is used to supply power to the device body and can supply power to the transducer 120. Exemplarily, the charging seat may be provided with a first interface for supplying power to the device body, and the second interface may be electrically connected to a power supply battery for the oral care device. In addition, the charging seat may also be provided with a second interface for supplying power to the transducer 120, and the second interface may be connected to a power supply line such as a probe on the nozzle 200. When the oral care device is placed in the groove on the charging seat, the charging seat may only supply power to the device body alone, or may additionally supply power to the transducer 120.

[0108] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application is described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A nozzle, used in oral care equipment, characterized in that: include: A nozzle body, wherein the nozzle body has a liquid spraying hole and a first accommodating cavity and / or a first flow channel communicated with the liquid spraying hole; An ultrasonic transducer is arranged in the first accommodating chamber, the ultrasonic transducer is coaxially arranged with the liquid spraying hole, the distance between the working surface of the ultrasonic transducer and the end surface of the liquid spraying hole along the axial direction of the liquid spraying hole is greater than or equal to 2 mm and less than or equal to 20 mm, and the ultrasonic transducer is in direct or indirect contact with the liquid passing through the first accommodating chamber and / or the first flow channel to cavitate the liquid and spray it out through the liquid spraying hole.

2. The nozzle according to claim 1, characterized in that: The nozzle also includes: A flow guide is arranged in the first accommodating chamber; the flow guide includes a liquid inlet portion and a liquid outlet portion, the liquid inlet portion is connected to the liquid outlet portion and together forms a second accommodating chamber, the second accommodating chamber is connected to the first flow channel on one side close to the first flow channel, the liquid outlet portion is provided with a liquid outlet, and the liquid outlet is connected to the liquid spray hole.

3. The nozzle according to claim 2, characterized in that: The liquid outlet portion includes a second flow channel and a third flow channel in sequence along the axial direction of the liquid spray hole, and the cross-sectional area of ​​the second flow channel is larger than the cross-sectional area of ​​the third flow channel.

4. The nozzle according to claim 3, characterized in that: The liquid spray hole comprises: A fourth flow channel, wherein a cross-sectional area of ​​the fourth flow channel is smaller than a cross-sectional area of ​​the third flow channel.

5. The nozzle according to claim 2, characterized in that: The flow guide is detachably connected to the nozzle body or is an integral component.

6. The nozzle according to claim 1, characterized in that: An opening is provided on a side of the cavity wall of the nozzle body away from the liquid spray hole; The nozzle further comprises an end cover connected to the nozzle body and used for sealing the opening.

7. The nozzle according to claim 1, characterized in that: The nozzle also includes: A transmission member, one side of which is connected to the ultrasonic transducer, and the other side of which is in contact with the liquid flow in the first accommodating chamber, and the ultrasonic transducer can transmit energy to the liquid flow in the first accommodating chamber through the transmission member.

8. A nozzle, used in oral care equipment, characterized in that: include: The nozzle according to any one of claims 1 to 7; and A nozzle is connected to the nozzle, and a connecting portion is provided at one end of the nozzle away from the nozzle.

9. The nozzle according to claim 8, characterized in that The nozzle also includes: An electrical connector is arranged at the connecting portion, and the electrical connector is electrically connected to the ultrasonic transducer; the electrical connector is also electrically connected to the oral care device, so that the oral care device supplies power to the ultrasonic transducer through the electrical connector.

10. An oral care device, characterized in that: include: The nozzle according to claim 8 or 9; and The device body has a matching portion, and the device body is connected to the connecting portion of the nozzle through the matching portion.

11. The oral care device according to claim 10, characterized in that The device body is provided with a power supply component, and the power supply component is electrically connected to the ultrasonic transducer to supply power to the ultrasonic transducer.

12. An oral care system, characterized in that: include: The oral care device according to claim 10 or 11; and A charging component is used to supply power to the oral care device.

Images