Nozzle and oral irrigator

Abstract

The utility model discloses a nozzle and a water pick. The nozzle comprises a spray pipe and a spray head, the sprayer is provided with at least one liquid outlet channel which is provided with a liquid spraying opening, and the end, away from the spraying pipe, of the sprayer is provided with an elastic protruding part. The spray head is provided with a liquid outlet channel, and when the protruding part does not elastically deform, the protruding part is located on a liquid spraying path of the liquid spraying opening; when the protruding part elastically deforms, the protruding part is located outside a liquid spraying path of the liquid spraying opening. Or, the spray head is provided with a plurality of liquid outlet channels, the liquid spraying openings of the liquid outlet channels are arranged at intervals, and when the protruding part does not elastically deform, the liquid spraying paths of the liquid spraying openings of at least two liquid outlet channels are crossed, or / and the protruding part is located on the liquid spraying path of at least one liquid spraying opening; when the protruding part elastically deforms, the protruding part is located outside the liquid spraying paths of the liquid spraying openings, and the liquid spraying paths of the liquid spraying openings of the liquid outlet channels are not crossed. On the basis of preventing gingival bleeding caused by overlarge impact force of water flow, stubborn residues in tooth gaps can be effectively flushed.

Description

Technical Field

[0001] This application relates to the field of oral hygiene technology, and more particularly to a nozzle and a water flosser. Background Technology

[0002] A water flosser uses a water pump to generate high pressure and pulsed water flow. The water flow is sprayed from the nozzle of the water flosser and washes the teeth and gums. It can effectively clean the gaps between teeth and the gingival sulcus, and remove small food debris, stains and tartar that adhere to the teeth and gums, thus achieving the function of oral health care.

[0003] However, when the water flow has too much force on the teeth, it can easily cause gum bleeding, while when the water flow has too little force on the teeth, it is difficult to wash away the residue in the gaps between the teeth. Utility Model Content

[0004] This application provides a nozzle and a water flosser that can adjust the water flow impact force on the teeth as needed, thereby effectively rinsing away stubborn residue between teeth while preventing excessive water flow impact force from causing gum bleeding.

[0005] In a first aspect, this application provides a nozzle, comprising:

[0006] The nozzle has a liquid supply channel;

[0007] A nozzle is connected to the nozzle pipe. The nozzle has at least one outlet channel communicating with the liquid supply channel. The outlet channel has a spray nozzle located at the end of the nozzle away from the nozzle pipe. The end of the nozzle away from the nozzle pipe has a protrusion. The protrusion is elastic and can undergo elastic deformation under external force, thereby changing the orientation of the spray nozzle.

[0008] The nozzle has a liquid outlet channel. When the protrusion does not undergo elastic deformation, the protrusion is located on the liquid spray path of the spray nozzle; when the protrusion undergoes elastic deformation, the protrusion is located outside the liquid spray path of the spray nozzle; or...

[0009] The nozzle has multiple liquid outlet channels, and the spray nozzles of the multiple liquid outlet channels are arranged at intervals. When the protrusion does not undergo elastic deformation, the spray paths of the spray nozzles of at least two of the liquid outlet channels intersect, or / and the protrusion is located on the spray path of at least one of the spray nozzles; when the protrusion undergoes elastic deformation, the protrusion is located outside the spray path of the spray nozzle, and the spray paths of the spray nozzles of the multiple liquid outlet channels do not intersect.

[0010] In some embodiments, when the protrusion does not undergo elastic deformation, the axis of the nozzle forms a first angle α with the axis of the nozzle pipe, where 15 degrees ≤ α ≤ 30 degrees. This results in the water flow ejected from the nozzle having a certain inclination, making it easier for the spray paths of the two outlet channels to intersect, and the protrusion to be located on the spray path of the nozzle.

[0011] In some embodiments, when the protrusion undergoes elastic deformation, the axis of the nozzle is parallel to the axis of the spray pipe. The water jet from the nozzle can be directed vertically or nearly vertically into the tooth gaps, increasing the impact force of the water jet on the tooth gaps and further enhancing the cleaning effect.

[0012] In some embodiments, the nozzle has multiple liquid outlet channels, and when the protrusion undergoes elastic deformation, the axes of the nozzles of the multiple liquid outlet channels are parallel to each other. Multiple water streams can be used to clean a single tooth gap simultaneously, making it easier to flush away residue stuck in the gap and further improving the cleaning effect.

[0013] In some embodiments, when the protrusion does not undergo elastic deformation, the protrusion forms a groove, and the first surface of the protrusion forms the groove wall surface of the groove. The groove opening faces the side opposite to the nozzle, and the spray nozzle is located on the groove wall surface. When the protrusion undergoes elastic deformation, the first surface faces the side opposite to the nozzle. This makes it easier for the protrusion to be positioned on the spray path of the spray nozzle when it does not undergo elastic deformation.

[0014] In some embodiments, the nozzle has multiple liquid outlet channels. When the protrusion does not undergo elastic deformation, the orifice axes of at least two of the liquid outlet channels intersect, and / or the orifice of at least one of the liquid outlet channels faces the groove wall. This causes the spray paths of the orifices of at least two of the liquid outlet channels to intersect, and / or the protrusion to be located on the spray path of the orifice of at least one of the liquid outlet channels.

[0015] In some embodiments, the groove extends along a first direction through both sides of the protrusion, so that the protrusion can elastically deform under external force, the first direction being parallel to the radial direction of the nozzle. This makes it easier for the protrusion to elastically deform under the reaction force of the tooth surface and move to an unfolded state when it is pressed against and pressed against the tooth surface.

[0016] In some embodiments, the nozzle has multiple liquid outlet channels. When the protrusion undergoes elastic deformation, the spray nozzles of the multiple liquid outlet channels are arranged at intervals along a second direction, which is perpendicular to the first direction. This makes it easier for multiple water streams to clean a single tooth gap simultaneously, thereby more easily flushing away residue stuck in the tooth gap and further improving the cleaning effect on the tooth gap.

[0017] In some embodiments, when the protrusion undergoes elastic deformation, the length of the protrusion along the second direction is L0, where 5 mm ≤ L0 ≤ 10 mm. This ensures that the protrusion has a suitable length, preventing insufficient pressure on the tooth surface due to an excessively short contact length, while also preventing the protrusion from easily pressing against the gum line and causing discomfort to the user.

[0018] In some embodiments, when the protrusion does not undergo elastic deformation, the distance between the protrusion's apex and the nozzle along the nozzle's axis is H1; when the protrusion undergoes elastic deformation, the distance between the first surface and the nozzle along the nozzle's axis is H2, where 0.5 mm ≤ (H1-H2) ≤ 4 mm. This prevents the protrusion from deforming too little, resulting in insufficient water flow impact to clean the tooth gaps, while also preventing the protrusion from deforming too much, making it difficult to achieve deformation through the reaction force of the tooth surface.

[0019] In some embodiments, the groove includes a first groove and a second groove. The second groove is located on the side of the first groove near the nozzle and communicates with the first groove. The groove wall of the first groove extends obliquely towards the axis of the nozzle and close to the second groove. The groove wall of the second groove extends obliquely towards the axis of the nozzle and away from the first groove. The groove wall of the first groove forms a first acute angle with the axis of the nozzle, and the groove wall of the second groove forms a second acute angle with the axis of the nozzle. The first acute angle is greater than the second acute angle. This design allows the portion of the protrusion forming the first groove to more easily expand and elastically deform away from the first groove, reducing the contact force between the protrusion and the tooth surface, improving comfort during use. Furthermore, a water flow channel can be formed between the second groove and the tooth, allowing water sprayed from the nozzle to the interdental space to flow outwards through the water flow channel.

[0020] In some embodiments, the spray nozzle is located on the wall surface of the second tank. This makes it easier for the protrusion to be positioned on the spray path of the spray nozzle when the protrusion does not undergo elastic deformation, and when the protrusion is brought into contact with the tooth surface, the spray nozzle is closer to the water flow channel, and the water sprayed from the spray nozzle to the tooth gap is more likely to flow outward through the water flow channel.

[0021] In some embodiments, the nozzle has multiple liquid outlet channels. When the protrusion undergoes elastic deformation, the distance between the spray nozzles of two adjacent liquid outlet channels is L1, where 0.5 mm ≤ L1 ≤ 3 mm. This prevents the sprayed water from colliding due to excessively small distances between adjacent spray nozzles, while also preventing some water from shooting towards the gums and causing bleeding.

[0022] In some embodiments, the orifice diameter of the spray nozzle is D, where 0.2 mm ≤ D ≤ 0.8 mm. This ensures that the flow rate and impact force of the water jet from the spray nozzle are suitable, meeting the rinsing requirements while preventing water from damaging the teeth.

[0023] In some embodiments, the hardness of the protrusion is K, where 40 HRA ≤ K ≤ 70 HRA. This ensures sufficient structural stability for the protrusion while preventing discomfort to the user when it comes into contact with the tooth surface.

[0024] In some embodiments, when the protrusion does not undergo elastic deformation, the distance between the spray nozzle and the spray pipe along the axis of the spray pipe is H0, where 1 mm ≤ H0 ≤ 10 mm. This prevents the distance between the tooth surface and the spray pipe from being too small, which could cause discomfort to the teeth due to the hardness of the spray pipe, and also prevents the elastic protrusion from sagging downwards under gravity.

[0025] Secondly, this application also provides a water flosser, including a body and a nozzle as described in any of the above embodiments, wherein the nozzle is connected to the body.

[0026] The beneficial effects of this application are as follows: When the nozzle is first activated and sprays water, the protrusion does not undergo elastic deformation. When the spray paths of the two outlet channels intersect, the two water streams converge in the overlapping area. The two water streams impact each other, causing their impact forces to cancel each other out and disperse, thus weakening the impact force of both water streams and making them relatively gentle. At this time, the water stream will not cause gum bleeding by hitting the gums, while still effectively rinsing away residue on the tooth surface. Furthermore, because the two water streams are sprayed at a certain angle, the cleaning efficiency of the tooth surface is increased. When the protrusion is located on the spray path of the nozzle, the water stream sprayed from the nozzle will be directed towards the protrusion and blocked by it, thus preventing the strong water stream from directly hitting the gums and causing gum bleeding. When a user needs to rinse between teeth, the protrusion can be placed against the tooth surface and pressed through the nozzle. At this time, the protrusion can elastically deform under the reaction force of the tooth surface and move to the unfolded state. The protrusion is located outside the spray path of the nozzle, and the spray paths of the multiple outlet channels do not intersect. The water jet from the nozzle can directly hit the gap between teeth. The impact force of the water jet is strong and can effectively rinse away stubborn residue in the gap between teeth. When the protrusion is removed from the tooth surface, the external force on the protrusion disappears, and the protrusion returns to its shape before elastic deformation, moving to the folded state. This can prevent the strong water jet from directly hitting the gums and causing gum bleeding during the process of the protrusion leaving the tooth surface. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments or related technologies of this application, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the nozzle structure from a first-view perspective in one embodiment of this application;

[0029] Figure 2 This is a schematic diagram of the nozzle structure from a second perspective in one embodiment of this application;

[0030] Figure 3 This is a partial structural diagram of the nozzle in one embodiment of this application;

[0031] Figure 4 This is a partial structural diagram of the nozzle in one embodiment of this application when no elastic deformation occurs;

[0032] Figure 5 This is a partial structural diagram of the nozzle undergoing elastic deformation in one embodiment of this application;

[0033] Figure 6 This is a partial structural diagram of the nozzle in another embodiment of this application when no elastic deformation occurs;

[0034] Figure 7 This is a partial structural diagram of the nozzle undergoing elastic deformation in another embodiment of this application;

[0035] Figure 8 This is a partial structural diagram of the nozzle in another embodiment of this application when the nozzle has not undergone elastic deformation.

[0036] Figure label:

[0037] 10. Nozzle; 11. Liquid supply channel; 20. Nozzle; 21. Liquid outlet channel; 211. Liquid spray nozzle; 22. Protrusion; 221. First surface; 23. Groove; 231. First groove; 232. Second groove; S1. Hole axis; S2. Centerline; P. Liquid spray path. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0039] In related technologies, the problem of bleeding gums when using oral irrigators to clean the mouth has always been a major pain point that users complain about. First-time users of oral irrigators do not know where to rinse. When using the high-power mode, the water jet from the nozzle is too strong, and when the water jet reaches the gums, it will cause bleeding and cause strong discomfort to the user. When using the low-power mode, the water jet from the nozzle is too weak and it is difficult to remove the residue in the gaps between the teeth, resulting in poor cleaning ability.

[0040] In view of the above problems, this application provides a nozzle and a water flosser to solve the problem that when using a water flosser to clean the mouth, if the water flow has too great an impact on the teeth, it can easily cause gum bleeding, while if the water flow has too little an impact on the teeth, it is difficult to remove the residue in the gaps between the teeth.

[0041] Firstly, this application provides a nozzle, such as Figure 1 and Figure 2 As shown, the nozzle includes a nozzle 10 and a nozzle head 20. The nozzle 10 is used to connect to the body of the water flosser to mount the nozzle on the body; the nozzle head 20 is connected to the nozzle 10 and is used to spray water to clean teeth. The nozzle can be connected to the nozzle 10 by integral injection molding, snap-fit, socket, threaded connection or other means.

[0042] Specifically, such as Figures 3 to 5 As shown, the nozzle 10 has a liquid supply channel 11. When the nozzle 10 is installed on the machine body, the liquid supply channel 11 is connected to the water pump on the machine body to receive the water pumped by the water pump. The nozzle 20 has at least one liquid outlet channel 21 connected to the liquid supply channel 11. The liquid outlet channel 21 has a spray nozzle 211 located at the end of the nozzle 20 away from the nozzle 10. The spray nozzle 211 is used to spray water. The water flowing from the liquid supply channel 11 into the liquid outlet channel 21 can be sprayed out through the spray nozzle 211 to clean the teeth. The end of the nozzle 20 away from the nozzle 10 has a protrusion 22. The protrusion 22 is elastic and can undergo elastic deformation under external force, changing the orientation of the spray nozzle 211. It should be noted that the protrusion 22 can be made of elastic rubber (such as silicone), elastic plastic, or other materials. The protrusion 22 can undergo elastic deformation under external force, causing the state of the protrusion 22 to change from a retracted state (such as...). Figure 4 , Figure 6 and Figure 8 Move to the unfolded state (e.g.) Figure 5 and Figure 7 This changes the orientation of the nozzle 211, which is parallel to the extension direction of the orifice axis S1 of the nozzle 211. The spray path P of the nozzle 211 refers to the flow path of the water flow or the main part of the water flow ejected from the nozzle 211. The spray path P of the nozzle 211 is related to the orientation of the nozzle 211. When the orientation of the nozzle 211 changes, the spray path P of the nozzle 211 will also change. Without considering gravity, the spray path P of the nozzle 211 is usually parallel or approximately parallel to the orifice axis S1 of the nozzle 211.

[0043] Among them, such as Figure 4 and Figure 5 As shown, in some embodiments, the nozzle 20 has a liquid outlet channel 21. When the protrusion 22 does not undergo elastic deformation, the protrusion 22 is located on the liquid spray path P of the spray nozzle 211; when the protrusion 22 undergoes elastic deformation, the protrusion 22 is located outside the liquid spray path P of the spray nozzle 211. It can be understood that the protrusion 22 being located on the liquid spray path P of the spray nozzle 211 means that when the water flow sprayed from the spray nozzle 211 is not dispersed, it will be blocked by the protrusion 22; the protrusion 22 being located outside the liquid spray path P of the spray nozzle 211 means that the protrusion 22 is not on the liquid spray path P of the spray nozzle 211, and when the water flow sprayed from the spray nozzle 211 is not dispersed, it will not be blocked by the protrusion 22.

[0044] like Figures 6 to 8As shown, in some other embodiments, the nozzle 20 has multiple liquid outlet channels 21, and the spray nozzles 211 of the multiple liquid outlet channels 21 are arranged at intervals. In this case, the number of liquid outlet channels 21 can be two, three or more; when the protrusion 22 does not undergo elastic deformation, the spray paths P of the spray nozzles 211 of at least two liquid outlet channels 21 intersect (e.g., Figure 6 ), or / and the protrusion 22 is located on the spray path P of at least one spray nozzle 211 (e.g. Figure 8 When the protrusion 22 undergoes elastic deformation, the protrusion 22 is located outside the spray path P of the spray nozzle 211, and the spray paths P of the spray nozzles 211 of the multiple outlet channels 21 do not intersect. It should be noted that when the protrusion 22 does not undergo elastic deformation, the spray paths P of the spray nozzles 211 of at least two outlet channels 21 may intersect, or the protrusion 22 may be located on the spray path P of at least one spray nozzle 211; when the protrusion 22 does not undergo elastic deformation, the spray paths P of the spray nozzles 211 of at least two outlet channels 21 may intersect, and the protrusion 22 may be located on the spray path P of at least one spray nozzle 211. It is understandable that the intersection of the spray paths P of the two nozzles 211 means that the spray paths P of the two nozzles 211 have overlapping areas. The water flow from one nozzle 211 will meet and collide with the water flow from the other nozzle 211 in the overlapping area, thus causing the two water flows to diverge. The non-intersection of the spray paths P of the two nozzles 211 means that the spray paths P of the two nozzles 211 do not have overlapping areas. The water flow from one nozzle 211 will not meet with the water flow from the other nozzle 211, thus causing the two water flows to be less divergent, more concentrated, and with a greater impact force.

[0045] Understandably, when the nozzle is first activated and sprays water, the protrusion 22 does not undergo elastic deformation. When the spray paths P of the spray nozzles 211 of the two liquid channels 21 intersect, the two water streams converge in the overlapping area. The two water streams impact each other, causing their impact forces to cancel each other out and disperse, thus weakening the impact force of both water streams and making them relatively gentle. At this time, the water stream will not cause gum bleeding by hitting the gums, while still being able to properly rinse away residue on the tooth surface. Furthermore, because the two water streams are sprayed at a certain angle, the cleaning efficiency of the tooth surface is increased. When the protrusion 22 is located on the spray path P of the spray nozzle 211, the water stream sprayed from the spray nozzle 211 will be directed towards the protrusion 22 and blocked by the protrusion 22, thus preventing the strong water stream from directly hitting the gums and causing gum bleeding.

[0046] When a user needs to rinse between teeth, the protrusion 22 can be pressed against the tooth surface and the protrusion 22 can be pressed through the nozzle 10. At this time, the protrusion 22 can be elastically deformed and moved to the unfolded state under the reaction force of the tooth surface. At this time, the protrusion 22 is located outside the spray path P of the spray nozzle 211, and the spray paths P of the spray nozzles 211 of the multiple outlet channels 21 do not intersect. The water flow sprayed from the spray nozzle 211 can be directly shot into the gap between teeth. The impact force of the water flow is strong and can effectively rinse the stubborn residue in the gap between teeth. When the protrusion 22 is removed from the tooth surface, the external force on the protrusion 22 disappears, and the protrusion 22 returns to the shape when it has not undergone elastic deformation, so as to move into the closed state. This can prevent the strong impact force of the water flow during the process of the protrusion 22 leaving the tooth surface from directly shooting into the gums and causing gum bleeding.

[0047] like Figure 6 As shown, in some embodiments, when the protrusion 22 does not undergo elastic deformation, the hole axis S1 of the nozzle 211 and the axis S2 of the nozzle 10 form a first included angle α, 15 degrees ≤ α ≤ 30 degrees, so that the water flow ejected from the nozzle 211 has a certain inclination, thereby making it easy for the spray paths P of the nozzles 211 of the two outlet channels 21 to intersect, and the protrusion 22 is easily located on the spray path P of the nozzle 211; when α is less than 15 degrees, α is too small, the inclination of the water flow ejected from the nozzle 211 is too small, the spray paths P of the nozzles 211 of the two outlet channels 21 are not easy to intersect, and the protrusion 22 is not easy to be located on the spray path P of the nozzle 211; when α is greater than 30 degrees, α is too large, which easily causes the water flow ejected from the nozzle 211 to not be directly aligned with the tooth gap when the protrusion 22 undergoes elastic deformation, which will reduce the flushing effect of the water flow. α can be 15 degrees, 20 degrees, 25 degrees, 30 degrees or other angles.

[0048] like Figure 7 As shown, in some embodiments, when the protrusion 22 undergoes elastic deformation, the axis S1 of the nozzle 211 is parallel to the axis S2 of the nozzle 10. It is understood that when a user uses a water flosser to rinse between teeth, the axis S2 of the nozzle 10 is usually perpendicular or nearly perpendicular to the gaps in the teeth. In this case, the water jet from the nozzle 211 can be directed perpendicularly or nearly perpendicularly towards the gaps, increasing the impact force of the water flow and further enhancing the cleaning effect.

[0049] In some embodiments, the nozzle 20 has multiple liquid outlet channels 21. When the protrusion 22 undergoes elastic deformation, the hole axes S1 of the spray nozzles 211 of the multiple liquid outlet channels 21 are parallel to each other, so that when rinsing the tooth gap, multiple water flows can be used to clean a tooth gap at the same time, making it easier to wash away the residue stuck in the tooth gap, and further improving the cleaning effect on the tooth gap.

[0050] See also Figure 6 As shown, in some embodiments, when the protrusion 22 does not undergo elastic deformation, the protrusion 22 forms a groove 23, and the first surface 221 of the protrusion 22 forms the groove wall surface of the groove 23. The groove opening of the groove 23 faces the side opposite to the nozzle 10, and the spray nozzle 211 is located on the groove wall surface of the groove 23, that is, the spray nozzle 211 is located on the first surface 221. This makes it easier for the protrusion 22 to be located on the spray path P of the spray nozzle 211 when the protrusion 22 does not undergo elastic deformation. When the protrusion 22 undergoes elastic deformation, the first surface 221 faces the side opposite to the nozzle 10. It can be understood that when the protrusion 22 is in contact with the tooth surface, it is the first surface 221 that is in contact with the tooth surface. The water flow sprayed from the spray nozzle 211 located on the first surface 221 is not easily blocked by the protrusion 22, so that the water flow sprayed from the spray nozzle 211 can be directly sprayed into the tooth gap.

[0051] The nozzle 20 has multiple liquid outlet channels 21. When the protrusion 22 does not undergo elastic deformation, the hole axes S1 of the nozzles 211 of at least two liquid outlet channels 21 intersect, so that the spray paths P of the nozzles 211 of at least two liquid outlet channels 21 intersect; or, the nozzles 211 of at least one liquid outlet channel 21 face the wall of the groove 23, so that the protrusion 22 is located on the spray path P of the nozzles 211 of at least one liquid outlet channel 21. Taking the groove wall of the groove 23 as an example, which includes a first wall and a second wall that are arranged opposite to each other, the nozzles 211 located on the first wall can face the second wall, and the nozzles 211 located on the second wall can face the first wall; or, the hole axes S1 of the nozzles 211 of at least two liquid outlet channels 21 intersect, and the nozzles 211 of at least one liquid outlet channel 21 face the wall of the groove 23.

[0052] In some embodiments, the groove 23 may be along a first direction XX (e.g., Figure 1 The extension extends through both sides of the protrusion 22, allowing the protrusion 22 to undergo elastic deformation under external force, thereby causing the protrusion 22 to change from a retracted state (such as...). Figure 6 Move to the unfolded state (e.g.) Figure 7 The first direction XX is parallel to the radial direction of the nozzle 10, so that when the protrusion 22 is pressed against the tooth surface, the protrusion 22 is more easily pushed along the second direction YY by the reaction force of the tooth surface (e.g., when the protrusion 22 is pressed against the tooth surface). Figure 6 and Figure 7 It undergoes elastic deformation and moves to the unfolded state, with the second direction YY perpendicular to the first direction XX.

[0053] Furthermore, such as Figure 7As shown, the nozzle 20 has multiple liquid outlet channels 21. When the protrusion 22 undergoes elastic deformation, the spray nozzles 211 of the multiple liquid outlet channels 21 are arranged at intervals along the second direction YY. When the protrusion 22 comes into contact with the tooth surface, the position of the protrusion 22 can be adjusted so that the extension direction of the tooth gap is parallel to the second direction YY. Since the spray nozzles 211 of the multiple liquid outlet channels 21 are all along the second direction YY, it is easier for multiple water flows to clean a tooth gap at the same time, thereby making it easier to flush away the residue stuck in the tooth gap, which can further improve the cleaning effect on the tooth gap.

[0054] Furthermore, when the protrusion 22 undergoes elastic deformation, its length along the second direction YY is L0, where 5 mm ≤ L0 ≤ 10 mm. It is understandable that when L0 is less than 5 mm, the length of the protrusion 22 is too short, resulting in insufficient contact length between the protrusion 22 and the tooth surface, leading to insufficient pressure exerted by the protrusion 22 on the tooth surface. Consequently, the protrusion 22 is unlikely to undergo elastic deformation along the second direction YY under the reaction force of the tooth surface. When L0 is greater than 10 mm, the length of the protrusion 22 is too long, causing it to easily press against the gum line when in contact with the tooth surface, leading to discomfort for the user. Here, L0 can be 5 mm, 7 mm, 9 mm, 10 mm, or other lengths.

[0055] In some embodiments, when the protrusion 22 does not undergo elastic deformation, the distance between the convex top of the protrusion 22 and the nozzle 10 along the axis S2 of the nozzle 10 is H1 (e.g., Figure 6 When the protrusion 22 undergoes elastic deformation, the distance between the first surface 221 and the nozzle 10 along the axis S2 of the nozzle 10 is H2 (e.g., Figure 7 ), 0.5 mm ≤ (H1-H2) ≤ 4 mm. It can be understood that the difference between H1 and H2 is the deformation depth of the groove 23 when the protrusion 22 moves from the retracted position to the unfolded position. The larger the difference between H1 and H2, the greater the deformation of the protrusion 22, and the larger the movement angle of the hole axis S1 of the spray nozzle 211. When the difference between H1 and H2 is less than 0.5 mm, the movement angle of the hole axis S1 of the spray nozzle 211 is smaller, which easily leads to the spray paths P of the two spray nozzles 211 still intersecting when the protrusion 22 undergoes elastic deformation, or the protrusion 22 is still located on the spray path P of the spray nozzle 211, thus resulting in insufficient water impact force to wash the tooth gaps; when the difference between H1 and H2 is greater than 4 mm, the deformation of the protrusion 22 is too large, and it is difficult to achieve the deformation of the protrusion 22 through the reaction force of the tooth surface.

[0056] See also Figure 6As shown, in some embodiments, the groove 23 includes a first groove 231 and a second groove 232. The second groove 232 is located on the side of the first groove 231 near the nozzle 10 and is in communication with the first groove 231. The groove wall of the first groove 231 extends obliquely in a direction close to the axis S2 of the second groove 232 and close to the nozzle 10. The groove wall of the second groove 232 extends obliquely in a direction away from the first groove 231 and close to the axis S2 of the nozzle 10.

[0057] In this configuration, the wall surface of the first groove 231 forms a first acute angle β1 with the axis S2 of the nozzle 10, and the wall surface of the second groove 232 forms a second acute angle β2 with the axis S2 of the nozzle 10, where β1 is greater than β2. It can be understood that... Figure 6 Taking the shown perspective as an example, the first groove 231 is located above the second groove 232, and compared to the groove wall surface of the second groove 232, the groove wall surface of the first groove 231 has a greater inclination. This makes it easier for the portion of the protrusion 22 forming the first groove 231 to expand and undergo elastic deformation in a direction away from the first groove 231 when the protrusion 22 comes into contact with the tooth surface. This can reduce the contact force of the protrusion 22 on the tooth surface and improve the comfort during use. In addition, as shown in the figure, Figure 7 As shown, the portion of the protrusion 22 that forms the second groove 232 is not fully expanded. A water flow channel can be formed between the second groove 232 and the tooth, and the water sprayed from the nozzle 211 into the tooth gap can flow out through the water flow channel.

[0058] Furthermore, the spray nozzle 211 is located on the wall of the second tank 232, so that the spray nozzle 211 is located in a deeper position in the groove 23. This makes it easier for the protrusion 22 to be located on the spray path P of the spray nozzle 211 when the protrusion 22 does not undergo elastic deformation. When the protrusion 22 is in contact with the tooth surface, the spray nozzle 211 is closer to the water flow channel, and the water sprayed from the spray nozzle 211 to the tooth gap is more likely to flow out through the water flow channel.

[0059] In some embodiments, such as Figure 6 As shown, when the protrusion 22 does not undergo elastic deformation, the distance between the nozzle 211 and the nozzle 10 along the axis S2 of the nozzle 10 is H0, where 1 mm ≤ H0 ≤ 10 mm. When H0 is less than 1 mm, the distance between the nozzle 211 and the nozzle 10 is too small. When the protrusion 22 contacts the tooth surface, the distance between the tooth surface and the nozzle 10 is small, and the relatively hard nozzle 10 can easily cause discomfort to the teeth. When H0 is greater than 10 mm, the distance between the nozzle 211 and the nozzle 10 is too large, and the nozzle 10 cannot provide overall support for the protrusion 22. The elastic protrusion 22 may droop downwards under the action of gravity. Here, H0 can be 1 mm, 3 mm, 5 mm, 8 mm, 10 mm, or other distances.

[0060] See also Figure 7 As shown, the nozzle 20 has multiple liquid outlet channels 21. When the protrusion 22 undergoes elastic deformation, the distance between the spray nozzles 211 of two adjacent liquid outlet channels 21 is L1, where 0.5 mm ≤ L1 ≤ 3 mm. It is understandable that when L1 is less than 0.5 mm, the distance between the spray nozzles 211 of two adjacent liquid outlet channels 21 is too small, and the water jets from the two nozzles 211 are prone to collision, resulting in a reduction in the impact force of the water jets. When L1 is greater than 0.5 mm or 3 mm, the distance between the spray nozzles 211 of two adjacent liquid outlet channels 21 is too large, and some water jets are prone to hitting the gums, causing gum bleeding. L1 can be 0.5 mm, 1 mm, 2 mm, 3 mm, or other values.

[0061] In some embodiments, the orifice diameter of the spray nozzle 211 is D, where 0.2 mm ≤ D ≤ 0.8 mm. When D is less than 0.2 mm, the orifice diameter of the spray nozzle 211 is too small, resulting in insufficient flow rate and impact force of the water sprayed from the spray nozzle 211, which cannot meet the rinsing requirements. When D is greater than 0.8 mm, the orifice diameter of the spray nozzle 211 is too large, resulting in excessive impact force of the water sprayed from the spray nozzle 211, which may easily damage the teeth. D can be 0.2 mm, 0.5 mm, 0.7 mm, 0.8 mm, or other values.

[0062] In some embodiments, the hardness of the protrusion 22 is K, where 40HRA≤K≤70HRA. When K is less than 40HRA, the hardness of the protrusion 22 is too low, and the structure is not stable enough. When the protrusion 22 does not undergo elastic deformation and water is sprayed from the nozzle 211, the protrusion 22 is prone to deformation under the reaction force, thus causing the protrusion 22 to fail to block the water flow. When K is greater than 70HRA, the hardness of the protrusion 22 is too high, and the protrusion 22 may cause discomfort to the user when it comes into contact with the tooth surface. K can be 40HRA, 50HRA, 60HRA, 70HRA, or other values.

[0063] It should also be noted that, in this application, when using a nozzle to clean the tooth gaps, besides using the tooth surface to push open the protrusion 22 and cause it to elastically deform, in other embodiments, an expanding mechanism can also be provided to cause elastic deformation, for example, by... Figure 6For example, pull ropes can be fixed to the two protrusions on the left and right sides of the protrusion 22. A knob-and-screw mechanism is provided on one end of the pull rope on the nozzle 10. One end of the pull rope is connected to the protrusion, and the other end is wound around the knob's shaft. When the knob is rotated, the pull rope causes the protrusion 22 to elastically deform and open outwards. In other embodiments, a telescopic rod that extends and retracts along the second direction YY can be provided in the groove 23. Both ends of the telescopic rod are connected to the inner wall of the groove 23. A button is provided on the nozzle 10 to drive the telescopic rod to extend and retract. By pressing the button, the telescopic rod can extend and retract along the second direction YY, causing the protrusion 22 to deform. When the telescopic rod extends along the second direction YY, it pushes open the protrusion 22. When the telescopic rod shortens along the second direction YY, the protrusion 22 returns to its state before elastic deformation. Of course, in other embodiments, other expanding mechanisms can also be used to induce elastic deformation.

[0064] Secondly, based on the above-mentioned nozzle, this application also provides a water flosser, including a body and a nozzle as described in any of the above embodiments, wherein the nozzle nozzle 10 is connected to the body.

[0065] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A nozzle, characterized in that, include: The nozzle has a liquid supply channel; A nozzle is connected to the nozzle pipe. The nozzle has at least one outlet channel communicating with the liquid supply channel. The outlet channel has a spray nozzle located at the end of the nozzle away from the nozzle pipe. The end of the nozzle away from the nozzle pipe has a protrusion. The protrusion is elastic and can undergo elastic deformation under external force, thereby changing the orientation of the spray nozzle. The nozzle has a liquid outlet channel. When the protrusion does not undergo elastic deformation, the protrusion is located on the liquid spray path of the spray nozzle; when the protrusion undergoes elastic deformation, the protrusion is located outside the liquid spray path of the spray nozzle; or... The nozzle has multiple liquid outlet channels, and the spray nozzles of the multiple liquid outlet channels are arranged at intervals. When the protrusion does not undergo elastic deformation, the spray paths of the spray nozzles of at least two of the liquid outlet channels intersect, or / and the protrusion is located on the spray path of at least one of the spray nozzles; when the protrusion undergoes elastic deformation, the protrusion is located outside the spray path of the spray nozzle, and the spray paths of the spray nozzles of the multiple liquid outlet channels do not intersect.

2. The nozzle according to claim 1, characterized in that, When the protrusion does not undergo elastic deformation, the axis of the nozzle orifice forms a first angle α with the axis of the nozzle pipe, where 15 degrees ≤ α ≤ 30 degrees.

3. The nozzle according to claim 1, characterized in that, When the protrusion undergoes elastic deformation, the axis of the nozzle orifice is parallel to the axis of the nozzle pipe.

4. The nozzle according to claim 1, characterized in that, The nozzle has multiple liquid outlet channels, and when the protrusion undergoes elastic deformation, the orifice axes of the multiple liquid outlet channels are parallel to each other.

5. The nozzle according to claim 1, characterized in that, When the protrusion does not undergo elastic deformation, the protrusion forms a groove, and the first surface of the protrusion forms the groove wall surface of the groove. The groove opening faces the side opposite to the nozzle, and the liquid spray nozzle is located on the groove wall surface of the groove. When the protrusion undergoes elastic deformation, the first surface faces the side opposite to the nozzle.

6. The nozzle according to claim 5, characterized in that, The nozzle has multiple liquid outlet channels. When the protrusion does not undergo elastic deformation, the nozzle axes of at least two of the liquid outlet channels intersect, or / and the nozzle of at least one of the liquid outlet channels faces the groove wall.

7. The nozzle according to claim 5, characterized in that, The groove extends along a first direction to penetrate both sides of the protrusion, so that the protrusion can undergo elastic deformation under external force, and the first direction is parallel to the radial direction of the nozzle.

8. The nozzle according to claim 7, characterized in that, The nozzle has multiple liquid outlet channels. When the protrusion undergoes elastic deformation, the spray nozzles of the multiple liquid outlet channels are arranged at intervals along a second direction, which is perpendicular to the first direction.

9. The nozzle according to claim 8, characterized in that, When the protrusion undergoes elastic deformation, the length of the protrusion along the second direction is L0, where 5 mm ≤ L0 ≤ 10 mm.

10. The nozzle according to claim 7, characterized in that, When the protrusion does not undergo elastic deformation, the distance between the protrusion top and the nozzle along the nozzle axis is H1. When the protrusion undergoes elastic deformation, the distance between the first surface and the nozzle along the nozzle axis is H2, where 0.5 mm ≤ (H1-H2) ≤ 4 mm.

11. The nozzle according to claim 5, characterized in that, The groove includes a first groove and a second groove. The second groove is located on the side of the first groove near the nozzle and is in communication with the first groove. The groove wall of the first groove extends obliquely in a direction close to the axis of the second groove and close to the nozzle. The groove wall of the second groove extends obliquely in a direction away from the first groove and close to the axis of the nozzle. Wherein, the groove wall of the first groove body forms a first acute angle with the axis of the nozzle, and the groove wall of the second groove body forms a second acute angle with the axis of the nozzle, wherein the first acute angle is greater than the second acute angle.

12. The nozzle according to claim 11, characterized in that, The spray nozzle is located on the wall of the second tank.

13. The nozzle according to claim 1, characterized in that, The nozzle has multiple liquid outlet channels. When the protrusion undergoes elastic deformation, the distance between the spray nozzles of two adjacent liquid outlet channels is L1, where 0.5 mm ≤ L1 ≤ 3 mm.

14. The nozzle according to claim 1, characterized in that, The diameter of the spray nozzle is D, where 0.2 mm ≤ D ≤ 0.8 mm.

15. The nozzle according to claim 1, characterized in that, The hardness of the protrusion is K, where 40HRA≤K≤70HRA.

16. The nozzle according to claim 1, characterized in that, When the protrusion does not undergo elastic deformation, the distance between the spray nozzle and the spray pipe along the axis of the spray pipe is H0, where 1 mm ≤ H0 ≤ 10 mm.

17. A dental flosser, characterized in that, It includes a fuselage and a nozzle as described in any one of claims 1 to 16, wherein the nozzle nozzle is connected to the fuselage.

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