Nozzle and oral irrigator

Abstract

The nozzle comprises a spraying rod, a U-shaped spraying head and an elastic connecting piece, the U-shaped spraying head comprises a flow dividing part and two jet flow parts formed by extending from the two opposite ends of the flow dividing part in the second direction, and the two jet flow parts are oppositely arranged at intervals; the two jet flow parts and the flow dividing part form a containing cavity used for containing teeth, an opening communicated with the containing cavity is formed between the free ends of the two jet flow parts, jet flow openings facing the containing cavity are formed in the opposite inner wall faces of the two jet flow parts respectively, and the elastic connecting piece comprises a first connecting section, a deformation section and a second connecting section which are sequentially connected. The first connecting section is connected with the spraying rod, the second connecting section is connected with the flow dividing part, and at least the deformation section is an elastic piece. Through deformation of the deformation section, the U-shaped spray head moves relative to the spray rod so as to adjust the positions of the opening and the jet orifice relative to the spray rod, so that the tooth cleaning effect of the spray nozzle is improved, and the possibility that the spray nozzle and the teeth are stuck is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of oral cleaning, and in particular to a nozzle and an oral irrigator. Background Art

[0002] In the relevant technical field, there is a water flosser with a U-shaped nozzle, which is used to clamp the inner and outer tooth surfaces of the teeth and rinse the inner and outer tooth surfaces of the teeth based on the clamping. However, since the thickness of the teeth of different people in the inner and outer directions is different, when using the water flosser with a U-shaped nozzle, thicker teeth are easily stuck with the U-shaped nozzle, making the U-shaped nozzle difficult to remove from the mouth. Utility Model Content

[0003] The embodiment of the present application provides a nozzle, which aims to improve the cleaning effect of the nozzle on teeth and reduce the possibility of the nozzle and teeth getting stuck.

[0004] A first aspect of an embodiment of the present application provides a nozzle, which is applied to a water flosser and includes a spray rod, a U-shaped nozzle and an elastic connecting member, wherein the spray rod extends along a first direction; the U-shaped nozzle includes a diverter portion and two jet portions extending from opposite ends of the diverter portion along a second direction, the two jet portions are arranged opposite to each other and at intervals, the two jet portions and the diverter portion constitute a receiving cavity for accommodating teeth, an open opening connected to the receiving cavity is formed between the free ends of the two jet portions, and the opposite inner wall surfaces of the two jet portions are each formed with a jet port arranged toward the receiving cavity, wherein the second direction is perpendicular to the first direction; the elastic connecting member includes a first connecting section, a deformation section and a second connecting section connected in sequence, the first connecting end is connected to the spray rod, the second connecting section is connected to the diverter portion, and at least the deformation section is an elastic member, so that the U-shaped nozzle can move relative to the spray rod to adjust the position of the open opening and the jet port relative to the spray rod.

[0005] Further, the deformation capacity of the deformation section in the second direction is smaller than the deformation capacity of the deformation section in a third direction, wherein the third direction is perpendicular to the first direction and the second direction in pairs.

[0006] Further, the thickness of the deformation segment in the second direction is greater than the thickness of the deformation segment in the third direction.

[0007] Furthermore, a material reduction groove is provided on the outer surface of the deformation section to make the deformation section easy to deform.

[0008] Furthermore, the material reduction groove is arranged on the outer surface of the elastic connecting member relatively arranged along the third direction, the third direction, the first direction and the second direction are perpendicular to each other, and the material reduction groove extends obliquely in the direction away from the spray rod.

[0009] Furthermore, the width of the material reduction groove in the first direction is smaller than the diameter of the deformation section.

[0010] Further, in a direction away from the second direction from the inside of the diverter portion, the material reduction groove extends obliquely in a direction away from the spray bar.

[0011] Furthermore, along the first direction, a plurality of the material reducing grooves are arranged at intervals on the deformation segment, and a spacing between adjacent material reducing grooves is less than or equal to 2.5 mm.

[0012] Furthermore, a transition channel connected to the jet port is formed in the deformation section, and along the third direction, the inner wall surface of the transition channel and the bottom of the material reduction groove have a first thickness, and the first thickness is greater than or equal to 0.5 mm and less than or equal to 0.9 mm; wherein the third direction is perpendicular to the first direction and the second direction.

[0013] Further, along the first direction, the deformation segment has a first length, and the first length is greater than or equal to 3.5 mm and less than or equal to 15 mm.

[0014] Furthermore, the diameter of the deformation section is greater than or equal to 1.2 mm.

[0015] Furthermore, the hardness of the deformation section is greater than or equal to 40 Shore hardness and less than or equal to 70 Shore hardness.

[0016] Furthermore, a transition channel connected to the jet port is formed in the deformation section, and an inner wall surface of the transition channel and an outer surface of the deformation section have a second thickness, and the second thickness is greater than or equal to 1 mm and less than or equal to 3 mm.

[0017] Furthermore, the first connecting section, the deformation section and the second connecting section are all soft rubber parts and are integrally formed; and / or the elastic connecting part and the U-shaped nozzle are all soft rubber parts and are integrally formed.

[0018] Furthermore, the elastic connecting part and the U-shaped nozzle are both soft rubber parts, and meet at least one of the following conditions: along the first direction, the overall length of the U-shaped nozzle is not greater than the diameter of the deformation section; along the second direction, the overall height of the U-shaped nozzle is not greater than the diameter of the deformation section; along the third direction, the overall width of the U-shaped nozzle is not greater than the diameter of the deformation section; wherein the first direction, the second direction and the third direction are perpendicular to each other.

[0019] Furthermore, the elastic connecting part and the U-shaped nozzle are both soft rubber parts and are molded separately. The diverter part includes a first diverter part and a second diverter part. The first diverter part and the second connecting section are integrally molded; the second diverter part and the two jet parts are integrally molded, and are assembled and fixed with the first diverter part to jointly construct a diverter channel, and the diverter channel is connected to the jet port.

[0020] Furthermore, the first flow splitter portion includes an annular protrusion, and the second flow splitter portion has an annular mounting groove, and the annular protrusion is clamped in the annular mounting groove.

[0021] Furthermore, the groove bottom of the annular installation groove has a glue filling groove, and glue is arranged in the glue filling groove, and the glue is bonded to the groove wall of the glue filling groove and the first splitter part.

[0022] Furthermore, the second flow splitter portion has a first outer surface disposed toward the deformation end, and along the second direction, there is a first spacing between the first outer surface and the outer surface of the deformation segment, and the first spacing is greater than or equal to 1.2 mm and less than or equal to 2 mm.

[0023] Furthermore, the spray rod comprises a guide section and a sleeve section connected to each other, and the first connecting section is sleeved outside the sleeve section so that the elastic connecting member is fixedly connected to the spray rod.

[0024] Furthermore, the diameters of the first connecting portion and the deformation section are both larger than the diameter of the guide section near one end of the sleeve section; and / or, the deformation section has a transition flow channel, the sleeve section has a first flow channel, the guide section has a second flow channel, the diameter of the transition flow channel is consistent with the diameter of the first flow channel, and the diameter of the transition flow channel is smaller than the diameter of the second flow channel.

[0025] Furthermore, the first connecting section is bonded to the sleeve section or is formed on the sleeve section through a secondary injection molding process.

[0026] A second aspect of an embodiment of the present application provides a water flosser, comprising a main body and any one of the above-mentioned nozzles, wherein the main body has a water tank; the spray rod is connected to the main body at one end away from the U-shaped nozzle and communicates with the water tank.

[0027] An embodiment of the present application provides a nozzle and a water flosser, wherein the nozzle is applied to the water flosser, and the nozzle includes an elastic connector, which includes a first connecting section, a deformation section and a second connecting section connected in sequence, wherein at least the deformation section is an elastic member, and a user can deform the deformation section by twisting the spray rod to adjust the position of the U-shaped nozzle on the teeth, which is not only conducive to the comprehensive cleaning of the teeth in the oral cavity and improves the cleaning effect of the nozzle on the teeth, but also the deformation of the deformation section can also change the distance, angle and clamping force between the two jet parts and the teeth, thereby changing the position of the open mouth and the jet mouth relative to the spray rod, making it easier to remove the nozzle from the oral cavity, thereby reducing the possibility of the nozzle and the teeth being stuck. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present application 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 application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0029] Figure 1 This is a schematic diagram of the structure of a water flosser in one embodiment of the present application;

[0030] Figure 2 This is a schematic diagram of the structure of a nozzle in one embodiment of the present application;

[0031] Figure 3 This is a partial structural schematic diagram of a nozzle in an embodiment of the present application;

[0032] Figure 4 This is a schematic diagram of the exploded structure of a nozzle in one embodiment of the present application;

[0033] Figure 5 It is a structural schematic diagram of a part of the nozzle in one embodiment of the present application from another perspective;

[0034] Figure 6 for Figure 5 The schematic cross-sectional view of a portion of the nozzle structure shown is along the DD cross section;

[0035] Figure 7 This is another perspective structural schematic diagram of a partial structure of a nozzle in an embodiment of the present application;

[0036] Figure 8for Figure 7 The schematic diagram of the cross-sectional structure of a part of the nozzle shown is along the EE section;

[0037] Fig. 9 It is a structural schematic diagram of a part of the nozzle in one embodiment of the present application from another perspective;

[0038] Fig.10 for Fig. 9 The schematic cross-sectional view of a portion of the nozzle structure shown is along the FF cross section;

[0039] Fig.11 This is a schematic structural diagram of a nozzle in an embodiment of the present application from another perspective;

[0040] Fig.12 for Fig.11 The cross-sectional structure schematic diagram of the nozzle along the GG section is shown.

[0041] Explanation of the reference numerals: 1-water flosser; 10-nozzle; 11-spray rod; 111-guiding section; 111a-second flow channel; 112-sleeve section; 112a-first flow channel; 12-U-shaped nozzle; 121-diverter; 121a-diverter channel; 1211-first diverter section; 1211a-annular protrusion; 1212-second diverter section; 1212a-annular mounting groove; 1212b-glue filling groove; 1212c-first outer surface; 122-jet section; 122a-jet port; 12a-open port; 12b-accommodating chamber; 13-elastic connecting member; 131-first connecting section; 132-deformation section; 1321-reducing groove; 132a-transition flow channel; 133-second connecting section; 20-main body. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0043] See also Figure 1 An embodiment of the present application provides a water flosser 1 , which includes a nozzle 10 and a main body 20 .

[0044] Specifically, the main body 20 includes a water tank and a host (neither of which are shown in the figure), the nozzle 10 is detachably connected to the main body 20 and is connected to the water tank, wherein the host can pressurize the liquid flowing out of the water tank, and the pressurized liquid can flow to the nozzle 10, and the nozzle 10 sprays the pressurized liquid to achieve cleaning of the user's teeth. The nozzle 10 of the embodiment of the present application can meet the cleaning needs of the canines, incisors and molars of the teeth.

[0045] See also Figure 2 In some embodiments, the nozzle 10 includes a spray rod 11 , a U-shaped spray head 12 and an elastic connecting member 13 .

[0046] The spray rod 11 can extend along the first direction AA, and one end of the spray rod 11 is connected to the water tank of the main body 20, and the other end of the spray rod 11 is connected to the U-shaped nozzle 12 through the elastic connector 13. The spray rod 11 is used to transmit the liquid pumped out of the water tank to the U-shaped nozzle 12 through the elastic connector 13. The U-shaped nozzle 12 sprays the liquid transmitted by the spray rod 11 in the form of a pulsed water column to rinse the user's teeth.

[0047] The U-shaped nozzle 12 includes a diverter portion 121 and a jet portion 122 extending from opposite ends of the diverter portion 121 along a second direction BB, wherein the first direction AA is perpendicular to the second direction BB, and the two jet portions 122 are opposite to each other and spaced apart, and the two jet portions 122 and the diverter portion 121 form a receiving cavity 12b for receiving teeth, and an open opening 12a connected to the receiving cavity 12b is formed between the free ends of the two jet portions 122. It can be understood that the teeth can extend into the receiving cavity 12b through the open opening 12a, thereby enabling the U-shaped nozzle 12 to clamp the inner tooth surface and the outer tooth surface of the tooth.

[0048] Furthermore, the relative inner wall surfaces of the two jet portions 122 are each formed with a jet port 122a arranged toward the accommodating cavity 12b, that is, when the teeth extend into the accommodating cavity 12b through the open port 12a, the spray rod 11 transfers the liquid in the water tank to the U-shaped nozzle 12, and then the jet ports 122a arranged on the two jet portions 122 of the U-shaped nozzle 12 spray the liquid out, thereby achieving flushing of the teeth.

[0049] See also Figure 2-Figure 3 The elastic connecting member 13 includes a first connecting section 131, a deforming section 132 and a second connecting section 133 which are connected in sequence, wherein the first connecting section 131 is connected to the other end of the spray rod 11, and the second connecting section 133 is connected to the diversion portion 121, and the elastic connecting member 13 is connected to the spray rod 11 and the U-shaped nozzle 12, so that the liquid of the spray rod 11 can be transmitted to the U-shaped nozzle 12 through the elastic connecting member 13, wherein at least the deforming section 132 is an elastic member, so that the U-shaped nozzle 12 can move relative to the spray rod 11 to adjust the position of the open mouth 12a and the jet mouth 122a relative to the spray rod 11.

[0050] It can be understood that when the U-shaped nozzle 12 clamps the inner and outer tooth surfaces of the teeth, due to the different thickness of the teeth of each user, some teeth are thicker, which will cause the U-shaped nozzle 12 to be difficult to move smoothly on the tooth surface, or the U-shaped nozzle 12 is clamped by the teeth when moving, making it difficult to remove. By setting the deformation section 132 as an elastic member, during the flushing process, the U-shaped nozzle 12 is subjected to the reaction force of the teeth or the pulsed water column, and the user can rotate or twist the spray rod 11 left and right to make the deformation section 1 32 can be deformed so that the U-shaped nozzle 12 can be adjusted to its position on the teeth, which is not only conducive to comprehensive cleaning of the teeth in the oral cavity, but also improves the cleaning effect of the nozzle 10 on the teeth; moreover, the deformation of the deformation section 132 can also change the distance, angle and clamping force between the two jet parts 122 and the inner and outer teeth, thereby changing the position of the open mouth 12a and the jet mouth 122a relative to the spray rod 11, making the U-shaped nozzle 12 easy to remove from the oral cavity, thus reducing the possibility of the nozzle 10 and the teeth getting stuck.

[0051] Among them, the deformation resistance of the deformation section 132 in the second direction BB is greater than the deformation resistance in the third direction CC. In this way, when the tooth extends into the accommodating cavity 12b through the open mouth 12a, it can avoid that the two jet parts 122 make the U-shaped nozzle 12 deform in the second direction BB when contacting the inner and outer tooth surfaces, thereby avoiding the instability of the water flow direction of the jet port 122a, or the jet part 122 is difficult to fix to clean the teeth, affecting the cleaning effect of the nozzle 10.

[0052] Furthermore, the deformation section 132 is an elastic part, and the elastic part can be an elastic material. The elastic material can include silicone material. Except for strong alkali and hydrofluoric acid, silicone material does not react with any substance, and is insoluble in water and any solvent. Therefore, the chemical properties of silicone material are stable, and it will not be corroded by saliva even if it is used in the mouth for a long time. It should be noted that the elastic material can also include other soft rubber materials, such as polyethylene, polypropylene, etc.

[0053] In the embodiment of the present application, the deformation section 132 is an elastic member. The user twists the spray rod 11 to deform the deformation section 132 so that the U-shaped nozzle 12 can be adjusted to a position on the teeth. The deformation of the deformation section 132 can also change the distance, angle and clamping force between the two jet parts 122 and the inner and outer teeth, thereby changing the position of the open mouth 12a and the jet mouth 122a relative to the spray rod 11, making it easy to remove the U-shaped nozzle 12 from the oral cavity. In this way, the cleaning effect of the nozzle 10 on the teeth is improved, and the possibility of the nozzle 10 being stuck on the teeth is reduced.

[0054] In some embodiments, the deformation ability of the deformation section 132 in the second direction BB is smaller than the deformation ability of the deformation section 132 in the third direction CC, wherein the third direction CC is perpendicular to the first direction AA and the second direction BB. Thus, when the user inserts the U-shaped nozzle 12 into the teeth or removes the U-shaped nozzle 12 from the teeth, the U-shaped nozzle 12 needs to be moved along the second direction BB. Therefore, the deformation ability of the deformation section 132 in the second direction BB is set to be smaller than the deformation ability of the deformation section 132 in the third direction CC, so that the deformation section 132 has a certain structural strength in the second direction BB, and compared with the third direction CC, the deformation section 132 is less likely to deform in the second direction BB, thereby preventing the U-shaped nozzle 12 from being too easily deformed when inserted into or removed from the teeth, which makes it difficult for the U-shaped nozzle 12 to be inserted into or removed from the teeth.

[0055] Furthermore, the deformation ability of the deformation section 132 in the second direction BB is smaller than the deformation ability of the deformation section 132 in the third direction CC, that is, the deformation section 132 is more likely to deform in the third direction CC than the deformation section 132 in the second direction BB, so that after the U-shaped nozzle 12 is stuck in the teeth, the relative position between the U-shaped nozzle 12 and the teeth can be adjusted, and the U-shaped nozzle 12 can move back and forth along the arrangement direction of the teeth, that is, the user can adjust the cleaning position of the U-shaped nozzle 12 for the teeth without taking out the U-shaped nozzle 12, thereby improving the convenience of the U-shaped nozzle 12 for cleaning the teeth.

[0056] The deformation of the deformation section 132 may be in various forms. For example, the thickness of the deformation section 132 in the second direction BB may be designed to be greater than the thickness of the deformation section 132 in the third direction CC, so that the deformation capacity of the deformation section 132 in the second direction BB is smaller. The thickness of the deformation section 132 in the second direction BB and the thickness of the deformation section 132 in the third direction CC are the transition channel 132a (see Figure 8 The thickness between the inner wall surface of the deformation section 132 and the outer surface of the deformation section 132.

[0057] For another example, a groove may be provided on the outer surface of the deformation section 132 through which the third direction CC passes, so that the deformation section 132 is more easily deformed in the third direction CC.

[0058] Please continue reading Figure 2-Figure 3In some embodiments, the first connecting section 131, the deformation section 132 and the second connecting section 133 are all soft rubber parts and are integrally formed. That is, when cleaning the teeth, because the elastic connecting parts 13 are all soft rubber parts, not only the deformation section 132 can be deformed. In this way, the area where the elastic connecting part 13 is deformed is increased, that is, the user can twist the area of ​​the elastic connecting part 13 to increase. By twisting the elastic connecting part 13, the user can realize the movement of the U-shaped nozzle 12 relative to the spray rod 11, thereby realizing the U-shaped nozzle 12 to clean teeth of any thickness. In this way, the cleaning effect of the nozzle 10 on the teeth is improved.

[0059] Furthermore, the elastic connector 13 is integrally formed. When the elastic connector 13 is manufactured, the integrally formed setting of the elastic connector 13 can facilitate the molding of the elastic connector 13, and there is no need for technicians to install the first connecting section 131, the deformation section 132 and the second connecting section 133 in sequence, thus reducing the labor cost.

[0060] See also Figure 2 In some other embodiments, the elastic connector 13 and the U-shaped nozzle 12 are both soft rubber parts and are integrally formed, that is, the tooth is inserted into the accommodating cavity 12b through the open mouth 12a, and the U-shaped nozzle 12 clamps the inner and outer tooth surfaces. When encountering large, deformed, or long and crooked teeth with larger thickness, the U-shaped nozzle 12 is a soft rubber part, so the accommodating cavity 12b can be expanded, and combined with the elastic connector 13 is also a soft rubber part, the user twists the spray rod 11 to make the U-shaped nozzle 12 easier to elastically deform, thereby increasing the U-shaped nozzle 1 Compared with the movable range of the spray rod 11, it is easier to realize that the U-shaped spray head moves back and forth in the oral cavity to clean the teeth, thereby improving the cleaning effect of the nozzle 10 on the teeth, and when the U-shaped spray head 12 is stuck with the teeth, because the elastic connecting member 13 and the U-shaped spray head 12 can be deformed, the two jet parts can be moved relative to the spray rod 11 by twisting the elastic connecting member 13, and it is easier to adjust the positions of the open mouth 12a and the jet mouth 122a relative to the spray rod 11, thus reducing the possibility of the nozzle 10 being stuck with the teeth.

[0061] Furthermore, the elastic connector 13 and the U-shaped nozzle 12 can be integrally formed, which can facilitate the molding of the elastic connector 13 and the U-shaped nozzle when the nozzle 10 is manufactured. It should be noted that the elastic connector 13 and the U-shaped nozzle 12 can also be separately formed, that is, the elastic connector 13 can be connected to the U-shaped nozzle 12 by a snap connection, an adhesive connection, etc., and the present application does not limit the connection form of the elastic connector 13 and the U-shaped nozzle 12.

[0062] Please continue reading Figure 2Furthermore, in some embodiments, based on the fact that the elastic connector 13 and the U-shaped nozzle 12 are both soft rubber parts, the U-shaped nozzle 12 needs to meet at least one of the following conditions, that is, along the first direction AA, the overall length of the U-shaped nozzle 12 is greater than the diameter of the deformation section 132; along the second direction BB, the overall height of the U-shaped nozzle 12 is greater than the diameter of the deformation section 132; along the third direction CC, the overall width of the U-shaped nozzle 12 is greater than the diameter of the deformation section 132, wherein the first direction AA, the second direction BB and the third direction CC are perpendicular to each other.

[0063] Exemplarily, when along the first direction AA, the overall length of the U-shaped nozzle 12 is greater than the diameter of the deformation section 132, it can be understood that the overall length of the U-shaped nozzle 12 is, and the length of the jet portion 122 plus the length of the diverter portion 121 is greater than the diameter of the deformation section 132. When the user twists the spray rod 11, since the deformation section 132 is closer to the spray rod 11, the deformation section 132 can be deformed before the U-shaped nozzle 12, and the length of the jet portion 122 can extend into the teeth to clean the gaps between the teeth. Since the diameter of the deformation section 132 is smaller than the overall length of the U-shaped nozzle 12, it is easy for the deformation section 132 to deform. So that the U-shaped nozzle 12 can move back and forth in the oral cavity to clean the teeth, thus improving the cleaning effect of the nozzle 10; if the diameter of the deformed section 132 is larger than the overall length of the U-shaped nozzle 12, the overall length of the U-shaped nozzle 12 is shorter. When the U-shaped nozzle 12 cleans the teeth, the two jet portions 122 may be shorter and the jet portions 122 cannot extend into the gaps between the teeth, resulting in the two jet ports 122a being unable to clean the gaps between the teeth. In addition, the diameter of the deformed section 132 is too large to form a high-pressure water column from the liquid transmitted by the spray rod 11 and spray it out through the jet port 122a, resulting in reduced cleaning effect.

[0064] See also Figure 4-Figure 6 In some embodiments, the elastic connecting member 13 and the U-shaped nozzle 12 are both soft rubber parts and are molded separately. The diverter portion 121 includes a first diverter portion 1211 and a second diverter portion 1212. The first diverter portion 1211 and the second connecting section 133 are integrally formed, and the second diverter portion 1212 and the two jet portions 122 are integrally formed, and are assembled and fixed with the first diverter portion 1211 to jointly construct a diverter channel 121a, and the diverter channel is connected to the jet port 122a of 121a.

[0065] Specifically, the first diverter section 1211 can receive the liquid transmitted by the spray rod 11, and divert it to the two jet sections 122 through the second diverter section 1212. The two jet sections 122 will spray the liquid received from the first diverter section 1211 from the two jet ports 122a, thereby achieving cleaning of the teeth. The first diverter section 1211 and the second connecting section 133 are integrally formed, and the first diverter section 1211 and the second diverter section 1212 are assembled and fixed, that is, the first diverter section 1211 can be arranged on the back of the second diverter section 1212 to strengthen the overall thickness of the diverter section 121, and because the diverter section 121 has a certain thickness, when the U-shaped nozzle 12 is subjected to the force of the deformation section, the U-shaped nozzle 12 is not easily deformed in the third direction CC.

[0066] Furthermore, the first splitter section 1211 and the second splitter section 1212 are detachably connected. When the U-shaped nozzle 12 or the elastic connector 13 is damaged, only the damaged U-shaped nozzle 12 or the elastic connector 13 needs to be replaced, and there is no need to replace the U-shaped nozzle 12 and the elastic connector 13 together. In this way, the cost of replacing the U-shaped nozzle 12 and the elastic connector 13 can be reduced.

[0067] See also Figure 6-Figure 8 Furthermore, the first splitter portion 1211 includes an annular protrusion 1211a, and the second splitter portion 1212 has an annular mounting groove 1212a, and the annular protrusion 1211a is clamped in the annular mounting groove 1212a, that is, assembly and installation are performed so that the U-shaped nozzle 12 is fixedly connected to the elastic connecting member 13, thereby improving the stability of the connection between the U-shaped nozzle 12 and the elastic connecting member 13.

[0068] It should be noted that the embodiment of the present application does not specifically limit the connection form between the U-shaped nozzle 12 and the elastic connector 13 .

[0069] Please continue reading Figure 6-Figure 8Furthermore, the bottom of the annular mounting groove 1212a has a glue-filling groove 1212b, and glue (not shown in the figure) is arranged in the glue-filling groove 1212b, and the glue is bonded to the groove wall of the glue-filling groove 1212b and the second flow splitter portion 1212, that is, after the first flow splitter portion 1211 and the second flow splitter portion 1212 are connected by snap connection, a glue-filling groove 1212b can be arranged at the bottom of the annular mounting groove 1212a, and glue is arranged in the glue-filling groove 1212b, and the glue is bonded to the first flow splitter portion 1211. The connection between the first diverter portion 1211 and the second diverter portion 1212 is fixed by glue on the basis of the snap-fit ​​connection. When the user twists the spray rod 11 to deform the elastic connecting member 13, the U-shaped nozzle 12 and the elastic connecting member 13 will not be separated due to the weak connection between the first diverter portion 1211 and the second diverter portion 1212. In this way, the stability of the connection between the U-shaped nozzle 12 and the elastic connecting member 13 is improved.

[0070] See also Figure 6 In some embodiments, the second splitter portion 1212 has a first outer surface 1212c disposed toward the deformation section 132. Along the second direction BB, the first outer surface 1212c has a first spacing d1 to the outer surface of the deformation section 132. The first spacing d1 is greater than or equal to 1.2 mm and less than or equal to 2 mm. For example, the first spacing d1 may be 1.2 mm, 1.5 mm, 1.8 mm, or 2 mm. By designing the first spacing d1 to be within a range greater than or equal to 1.2 mm and less than or equal to 2 mm, when the deformation section 132 is deformed, the connection between the second connecting section 133 and the splitter portion 121 is not easily torn because the first spacing d1 has a certain range. Thus, the durability of the nozzle 10 is improved. If the first spacing d1 is less than 1.2 mm, when the deformation section 132 is frequently deformed, the first outer surface 1212c is subjected to a large deformation force, which may easily cause the connection between the second connecting section 133 and the diverter portion 121 to be torn, thereby reducing the durability of the nozzle 10; if the first spacing d1 is greater than 2 mm, that is, the distance from the first outer surface 1212c to the outer surface of the deformation section 132 is large, when the deformation section 132 is deformed, the deformation force that the deformation section 132 can transmit to the U-shaped nozzle 12 is small, that is, the range of movement of the U-shaped nozzle 12 relative to the spray rod 11 is small, in particular, when the force of twisting the spray rod 11 is small, the deformation section 132 may not transmit the deformation force to the U-shaped nozzle 12, so that the U-shaped nozzle 12 does not move relative to the spray rod 11, and does not adjust the position of the open mouth 12a and the jet mouth 122a relative to the spray rod 11, resulting in an increased possibility of the nozzle 10 being stuck with the teeth.

[0071] See also Figure 2-Figure 3In some embodiments, a material reduction groove 1321 is provided on the outer surface of the deformation section 132. Specifically, the material reduction groove 1321 can be set at any position on the outer surface of the deformation section 132. On the one hand, it is convenient for the user to intuitively observe the position of the deformation section 132. On the other hand, designing the material reduction groove 1321 on the outer surface of the deformation section 132 can make it easier for the deformation section 132 to deform, so that the U-shaped nozzle 12 can move relative to the spray rod 11, and it is easier to adjust the position of the open mouth 12a and the jet mouth 122a relative to the spray rod 11. In this way, the deformation ability of the deformation section 132 is improved.

[0072] Please continue reading Figure 2-Figure 3 , further, in some embodiments, the material reduction groove 1321 is arranged on the outer surface of the elastic connector 13 that is relatively arranged along the third direction CC, and the material reduction groove 1321 extends along the second direction BB, wherein the third direction CC, the first direction AA and the second direction BB are perpendicular to each other. Specifically, the material reduction groove 1321 is arranged on the left and right outer surfaces of the elastic connector 13, and the material reduction groove 1321 extends along the second direction BB. According to the user's usage habits of the toothbrushing device 1, that is, when the user inserts the U-shaped nozzle 12 into the teeth or removes the U-shaped nozzle 12 from the teeth, the U-shaped nozzle 12 needs to be moved along the second direction BB, so the deformation ability of the deformation section 132 in the second direction BB is less than the deformation ability of the deformation section 132 in the third direction CC, and the user can realize the deformation ability of the elastic connector 13 in the third direction CC by turning left and right or twisting the spray rod 11, thereby improving the deformation performance of the elastic connector 13 in the third direction CC.

[0073] Furthermore, in some other embodiments, the material reduction groove 1321 extends obliquely in a direction away from the spray rod 11. It can be understood that the extension direction of the material reduction groove 1321 is set at an angle to the extension direction of the spray rod 11. When the elastic connecting member 13 is deformed, the connection between the second connecting section 133 and the diversion portion 121 will not be torn due to frequent twisting of the spray rod 11 causing the elastic connecting member 13 to deform. In this way, the durability of the elastic connecting member 13 is improved.

[0074] In some embodiments, the width of the material reduction groove 1321 in the first direction AA is smaller than the diameter of the deformation section 132. It can be understood that when the deformation section 132 is deformed, that is, the user uses the hand as the axis to horizontally twist the spray rod 11 to deform the deformation section 132 so that the U-shaped nozzle 12 can move relative to the spray rod 11. When the material reduction groove 1321 is deformed, because the width of the material reduction groove 1321 in the first direction AA is smaller than the diameter of the deformation section 132, the material reduction groove 1321 will not cause excessive deformation to cause the liquid transmitted from the spray rod 11 to be blocked in the deformation section 132, so that the jet port 122a of the U-shaped nozzle 12 cannot clean the teeth. In this way, the situation where the deformation section 132 is blocked by the liquid is reduced.

[0075] In some embodiments, the material reduction groove 1321 extends obliquely in a direction away from the spray rod 11 in the second direction BB away from the diverter 121. It can be understood that since the elastic connector 13 can be deformed and the connection between the second connecting section 133 and the diverter 121 is easily torn apart when the elastic connector 13 is deformed, the material reduction groove 1321 is designed to extend obliquely in a direction away from the spray rod 11 in the second direction BB away from the diverter 121, so that the material reduction groove 1321 arranged near the diverter 121 can be relatively away from the connection between the second connecting section 133 and the diverter 121. In this way, the problem of tearing of the connection between the second connecting section 133 and the diverter 121 due to long-term deformation of the elastic connector 13 can be avoided.

[0076] Please continue reading Figure 2-Figure 3 In one embodiment, along the first direction AA, a plurality of material reduction grooves 1321 are arranged at intervals on the deformation section 132, and a distance d2 between adjacent material reduction grooves 1321 is less than or equal to 2.5 mm.

[0077] Specifically, the material reduction groove 1321 is provided with a plurality of areas where the deformation section 132 is added, so as to avoid the problem of excessive deformation. The spacing d2 between adjacent material reduction grooves 1321 can be 1mm, 1.5mm, 2mm, and 2.5mm. When the user needs to twist the deformation section 132 to deform, the deformation area of ​​the deformation section 132 is relatively concentrated, and it is easier to adjust the position of the open mouth 12a and the jet mouth 122a relative to the spray rod 11, so as to improve the deformation performance of the deformation section 132. If the spacing d2 between adjacent material reduction grooves 1321 is greater than 2.5mm, the deformation area of ​​the deformation section 132 is relatively dispersed, and the user needs to use greater force to deform the deformation section 132, resulting in a decrease in the deformation ability of the deformation section 132.

[0078] See also Figure 6In some embodiments, the deformation section 132 has a first length L1 along the first direction AA, and the first length L1 is greater than or equal to 3.5 mm and less than or equal to 15 mm. For example, the first length L1 can be 3.5 mm, 5 mm, 8 mm, 10 mm, 13 mm, or 15 mm. At this time, the first length L1 is designed to be within the range of greater than or equal to 3.5 mm and less than or equal to 15 mm, which not only improves the deformation ability of the deformation section 132, but also improves the cleaning effect of the nozzle 10. If the first length L1 is less than 3.5 mm, because the first length L1 is too small, that is, the length of the deformation section 132 is small, the user needs to twist the spray rod 11 to reduce the area where the deformation section 132 is deformed, resulting in a decrease in the deformation ability of the deformation section 132. Moreover, because the deformation ability of the deformation section 132 is deteriorated, the user needs to use greater force to deform the deformation section 132, which can easily cause the deformation section 132 to tear, thereby reducing the durability of the elastic connector 13. The deformation section 132 is an elastic member, so the deformation section 132 is easy to deform. If the first length L1 is greater than 15 mm, the deformation section 132 may be deformed under the pressure of the liquid sprayed out of the jet port 122a when the nozzle 10 cleans the teeth, resulting in difficulty in positioning the jet portion 122, so that the jet port 122a sometimes fails to clean the tooth gap, thereby reducing the cleaning effect of the nozzle 10.

[0079] See also Figure 7-Figure 8 In some embodiments, the inner wall surface of the transition channel 132a and the outer surface of the deformation section 132 have a second thickness H2, and the second thickness H2 is greater than or equal to 1 mm and less than or equal to 3 mm.

[0080] Specifically, the second thickness H2 can be 1 mm, 2 mm, or 3 mm. When the user twists the deformation section 132, the deformation section 132 can be easily deformed. If the second thickness H2 is less than 1 mm, that is, the thickness from the inner wall of the transition channel 132a to the outer surface of the deformation section 132 is thinner, the deformation section 132 is easily broken when the user frequently twists the deformation section 132. If the second thickness H2 is greater than 3 mm, that is, the thickness from the inner wall of the transition channel 132a to the outer surface of the deformation section 132 is thicker, the user may need to use greater force to twist the spray rod 11 to deform the deformation section 132, thereby reducing the deformation ability of the deformation section 132.

[0081] See also Figure 9-10 In some embodiments, a transition channel 132a connected to the jet port 122a is formed in the deformation section 132. Along the third direction CC, the inner wall surface of the transition channel 132a and the bottom of the material reduction groove 1321 have a first thickness H1, and the first thickness H1 is greater than or equal to 0.5 mm and less than or equal to 0.9 mm.

[0082] Specifically, the transition channel 132a can receive the liquid transmitted from the spray rod 11, and the liquid in the transition channel 132a can be divided into two jet parts 122, and then the liquid is sprayed out through the jet port 122a, so as to achieve cleaning of the teeth, wherein the first thickness H1 can be 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, when the deformation section 132 is twisted, the design of the reduction groove 1321 makes it easier for the deformation section 132 to deform, but because the first thickness H1 is greater than or equal to 0.5mm and less than or equal to 0.9mm, the deformation section 132 will not be broken due to frequent deformation, thus improving the deformation section 132. The deformation ability also ensures the durability of the deformation section 132; when the first thickness H1 is less than 0.5mm, the thickness from the inner wall of the transition channel 132a to the bottom of the material reduction groove 1321 is relatively thin, and the user frequently deforms the deformation section 132, and the material reduction groove 1321 will also deform accordingly. When the material reduction groove 1321 is deformed many times, it is easy to cause the bottom of the material reduction groove 1321 to break; when the first thickness H1 is greater than 0.9mm, the thickness from the inner wall of the transition channel 132a to the bottom of the material reduction groove 1321 is relatively thick. At this time, the material reduction groove 1321 does not play a role in facilitating the deformation of the deformation section 132, resulting in a reduction in the deformation ability of the material reduction groove 1321 on the deformation section 132.

[0083] In some embodiments, the diameter of the deformation section 132 is greater than or equal to 1.2 mm. For example, the diameter of the deformation section 132 can be 1.2 mm, 2 mm, 3 mm, etc. Since the diameter of the deformation section 132 is designed to be greater than or equal to 1.2 mm, when the deformation section 132 is deformed, the deformation section 132 is not easy to break, thereby improving the durability of the elastic connector 13; when the diameter of the deformation section 132 is less than 1.2 mm, when the deformation section 132 is twisted, due to the small diameter of the deformation section 132 and the long-term use of the twisting spray rod 11 to deform the deformation section 132, it is easy to cause the deformation section 132 to break, thereby reducing the durability of the elastic connector 13.

[0084] In some embodiments, the hardness of the deformation section 132 is greater than or equal to 40 Shore hardness and less than or equal to 70 Shore hardness. For example, the hardness of the deformation section 132 can be 40 Shore hardness, 50 Shore hardness, 60 Shore hardness, or 70 Shore hardness. When the U-shaped nozzle 12 extends from the open mouth 12a into the accommodating cavity 12b, the user twists the spray rod 11 to deform the deformation section 132 so that the U-shaped nozzle 12 cleans the teeth. When the hardness of the deformed section 132 is less than or equal to 70 Shore hardness, the U-shaped nozzle 12 will not be inaccurately positioned at the cleaning position of the teeth due to excessive deformation of the deformed section 132. In this way, the cleaning effect of the nozzle 10 is not only improved; when the hardness of the deformed section 132 is less than 40 Shore hardness, the U-shaped nozzle 12 extends from the open mouth 12a into the accommodating cavity 12b, and the two jet portions 122 contact the teeth. When the U-shaped nozzle 12 cleans the inner tooth surface and the outer tooth surface, the hardness of the deformed section 132 is relatively low. The deformed section 132 is very easy to deform, that is, the elastic connector 13 is easy to deform, making it difficult for the U-shaped nozzle 12 to position the tooth part that needs to be cleaned, and making it difficult for the U-shaped nozzle 12 to clean the teeth in a concentrated manner, thus reducing the cleaning effect of the nozzle 10; when the hardness of the deformed section 132 is greater than 70 Shore hardness, the user twists the spray rod 11 to deform the deformed section 132, so that the U-shaped nozzle 12 moves relative to the spray rod 11, thereby realizing the movement of the U-shaped nozzle 12 on the teeth, but due to the deformation The hardness of the segment 132 is relatively large, and it is difficult for the user to twist the deformed segment 132, which makes it difficult for the U-shaped nozzle 12 to move back and forth on the teeth, so that the U-shaped nozzle 12 cannot fully clean the teeth, reducing the cleaning effect of the nozzle 10. In particular, when the U-shaped nozzle 12 is stuck on the teeth, due to the large hardness of the deformed segment 132, that is, the deformation ability of the deformed segment 132 is reduced, it is difficult to adjust the position of the open mouth 12a and the jet mouth 122a relative to the spray rod 11, making it difficult to remove the U-shaped nozzle 12 from the mouth.

[0085] See also Figure 11-Figure 12 In some embodiments, the spray rod 11 includes a connected guide section 111 and a sleeve section 112, and the first connecting section 131 is sleeved outside the sleeve section 112. It can be understood that the first connecting section 131 is connected to the sleeve section 112 to fix the elastic connecting member 13 to the spray rod 11, thereby improving the stability of the connection between the elastic connecting member 13 and the spray rod 11.

[0086] Furthermore, the first connecting section 131 and the sleeve section 112 can be molded on the sleeve section 112 by gluing or a secondary injection molding process, that is, the first connecting section 131 and the sleeve section 112 can be detachably connected or non-detachably connected. When the first connecting section 131 and the sleeve section 112 are detachably connected, the connection method of the first connecting section 131 and the sleeve section 112 can be an adhesive connection to achieve a fixed connection between the elastic connecting member 13 and the spray rod 11. It should be noted that the connection method of the first connecting section 131 and the sleeve section 112 can also be other forms. The embodiment of the present application does not specifically limit the connection method of the first connecting section 131 and the sleeve section 112; when the first connecting section 131 and the sleeve section 112 are non-detachably connected, the first connecting section 131 and the sleeve section 112 can be molded on the sleeve section 112 by a secondary injection molding process. In this way, the first connecting section 131 and the sleeve section 112 are easily molded during production.

[0087] See also Fig.12 In some embodiments, the diameters of the first connecting section 131 and the deforming section 132 are both larger than the diameter of the end of the guide section 111 close to the sleeve section 112, that is, the diameter of the guide section 111 and the end close to the sleeve section 112 is smaller than the diameter of the first connecting section 131, which makes it easier for the first connecting section 131 to be sleeved outside the sleeve section 112, thereby improving the stability of the connection between the elastic connector 13 and the spray rod 11.

[0088] Please continue reading Fig.12 In some embodiments, the deformation section 132 has a transition channel 132a, the sleeve section 112 has a first channel 112a, the guide section 111 has a second channel 111a, and the diameter of the transition channel 132a is consistent with the diameter of the first channel 112a, and the diameter of the transition channel 132a is smaller than the diameter of the second channel 111a.

[0089] Specifically, when the liquid in the water tank is pressurized by the main machine, the liquid can be transferred to the second flow channel 111a. Since the spray rod 11 extends along the first direction AA, that is, the spray rod 11 has a certain length in the first direction AA, when the liquid is transferred along the extension direction of the spray rod 11, the transfer speed of the liquid will be slowed down. If the length of the spray rod 11 in the first direction AA is long, the liquid in the water tank may not be transferred to the U-shaped nozzle 12, resulting in the nozzle 10 being unable to clean the teeth. Therefore, the diameter of the transition flow channel 132a and the diameter of the first flow channel 112a are designed to be smaller than the diameter of the second flow channel 111a. The diameter of the channel 111a can ensure that when the liquid is transmitted to the first flow channel 112a and the transition flow channel 132a, since the diameter of the transition flow channel 132a and the diameter of the first flow channel 112a are both smaller than the diameter of the second flow channel 111a, the transmission speed of the liquid to the transition flow channel 132a and the first flow channel 112a is basically consistent with the transmission speed of the second flow channel 111a. That is, the liquid transmitted from the water tank can always have a certain stamping property in the nozzle 10, thereby realizing the cleaning of the teeth by the jet port 122a, thereby improving the cleaning effect of the nozzle 10.

[0090] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of this application, it should be understood that if the terms "up", "down", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this application. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0091] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A nozzle, characterized in that: Applicable to water flossers, including: A spray bar extending in a first direction; A U-shaped nozzle, comprising a diverter portion and two jet portions extending from opposite ends of the diverter portion along a second direction, the two jet portions being arranged opposite to each other and spaced apart, the two jet portions and the diverter portion forming a receiving cavity for receiving teeth, an open opening communicating with the receiving cavity being formed between the free ends of the two jet portions, and jet ports arranged toward the receiving cavity being formed on the opposite inner wall surfaces of the two jet portions; wherein the second direction is perpendicular to the first direction; and, The elastic connecting member includes a first connecting section, a deformation section and a second connecting section which are connected in sequence, wherein the first connecting section is connected to the spray rod, and the second connecting section is connected to the diversion portion, and at least the deformation section is an elastic member so that the U-shaped nozzle can move relative to the spray rod to adjust the position of the open mouth and the jet port relative to the spray rod.

2. The nozzle according to claim 1, characterized in that The deformation capability of the deformation section in the second direction is smaller than the deformation capability of the deformation section in a third direction, wherein the third direction is perpendicular to the first direction and the second direction in pairs.

3. The nozzle according to claim 1, characterized in that The thickness of the deformation section in the second direction is greater than the thickness of the deformation section in the third direction.

4. The nozzle according to claim 1, characterized in that The outer surface of the deformation section is provided with a material reduction groove to make the deformation section easy to deform.

5. The nozzle according to claim 4, characterized in that The material reduction groove is arranged on the outer surface of the elastic connecting member relatively arranged along the third direction, the third direction, the first direction and the second direction are perpendicular to each other, the material reduction groove extends along the second direction, and / or the material reduction groove extends obliquely in a direction away from the spray rod.

6. The nozzle according to claim 5, characterized in that The width of the material reduction groove in the first direction is smaller than the diameter of the deformation section.

7. The nozzle according to claim 4, characterized in that The material reduction groove extends obliquely in a direction away from the spray bar in a direction away from the spray bar from the inner part of the diverter in the second direction.

8. The nozzle according to claim 4, characterized in that Along the first direction, a plurality of the material reducing grooves are arranged at intervals on the deformation section, and a spacing between adjacent material reducing grooves is less than or equal to 2.5 mm.

9. The nozzle according to claim 4, characterized in that A transition channel connected to the jet port is formed in the deformation section, and along the third direction, the inner wall surface of the transition channel and the bottom of the material reduction groove have a first thickness, and the first thickness is greater than or equal to 0.5 mm and less than or equal to 0.9 mm; The third direction is perpendicular to the first direction and the second direction.

10. The nozzle according to claim 1, characterized in that Along the first direction, the deformation segment has a first length, and the first length is greater than or equal to 3.5 mm and less than or equal to 15 mm.

11. The nozzle according to claim 1, characterized in that The diameter of the deformation section is greater than or equal to 1.2 mm.

12. The nozzle according to claim 1, characterized in that The hardness of the deformation section is greater than or equal to 40 Shore hardness and less than or equal to 70 Shore hardness.

13. The nozzle according to claim 1, characterized in that A transition channel connected to the jet port is formed in the deformation section, and an inner wall surface of the transition channel and an outer surface of the deformation section have a second thickness greater than or equal to 1 mm and less than or equal to 3 mm.

14. The nozzle according to claim 1, characterized in that The first connecting section, the deforming section and the second connecting section are all soft plastic parts and are integrally formed; and / or, The elastic connecting piece and the U-shaped nozzle are both soft rubber pieces and are integrally formed.

15. The nozzle according to claim 1, characterized in that The elastic connector and the U-shaped nozzle are both soft rubber parts and meet at least one of the following conditions: Along the first direction, the overall length of the U-shaped nozzle is greater than the diameter of the deformation section; Along the second direction, the overall height of the U-shaped nozzle is greater than the diameter of the deformation section; Along the third direction, the overall width of the U-shaped nozzle is greater than the diameter of the deformation section; The first direction, the second direction and the third direction are perpendicular to each other.

16. The nozzle according to claim 1, characterized in that The elastic connecting member and the U-shaped nozzle are both soft rubber parts and are formed separately. The diversion part includes: A first flow splitter portion, integrally formed with the second connecting section; and The second flow splitter portion is integrally formed with the two jet portions, and is assembled and fixed with the first flow splitter portion to jointly form a flow splitter channel, and the flow splitter channel is communicated with the jet port.

17. The nozzle according to claim 16, characterized in that The first flow splitter portion includes an annular protrusion, and the second flow splitter portion has an annular mounting groove, in which the annular protrusion is clamped.

18. The nozzle according to claim 17, characterized in that The bottom of the annular installation groove is provided with a glue filling groove, and glue is arranged in the glue filling groove. The glue is bonded to the groove wall of the glue filling groove and the first flow divider portion.

19. The nozzle according to claim 16, characterized in that The second flow splitter portion has a first outer surface disposed toward the deformation segment. Along the second direction, there is a first distance between the first outer surface and the outer surface of the deformation segment. The first distance is greater than or equal to 1.2 mm and less than or equal to 2 mm.

20. The nozzle of claim 1, wherein: The spray rod comprises a guide section and a sleeve section which are connected to each other, and the first connecting section is sleeved outside the sleeve section so that the elastic connecting member is fixedly connected to the spray rod.

21. The nozzle of claim 20, wherein: The diameters of the first connecting section and the deforming section are both larger than the diameter of the guide section at one end close to the sleeve section; and / or, The deformation section has a transition channel, the sleeve section has a first channel, the guide section has a second channel, the diameter of the transition channel is consistent with the diameter of the first channel, and the diameter of the transition channel is smaller than the diameter of the second channel.

22. The nozzle of claim 20, wherein: The first connecting section is bonded to the sleeve section or is formed on the sleeve section through a secondary injection molding process.

23. A dental flosser, characterized in that: include: A main body having a water tank; as well as, The nozzle according to any one of claims 1 to 22, wherein one end of the spray rod away from the U-shaped spray head is connected to the main body and communicated with the water tank.

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