Nozzle of oral irrigator and oral irrigator

Abstract

The utility model discloses a nozzle of a water pick and the water pick. The nozzle of the oral irrigator comprises a spray pipe. The spray pipe is provided with an inlet, an outlet and a runner communicating the inlet with the outlet. The spray pipe is at least provided with a first bent position and a second bent position, so that a main flow section, a first bent section and a second bent section which are sequentially connected are formed in the direction from the inlet to the outlet. The first bent section is located between the first bent position and the second bent position, and the second bent section is located between the second bent position and the outlet. The extending direction of the first bent section is different from that of the main flow section, and the extending direction of the first bent section is different from that of the second bent section. A flow channel on the main flow section is provided with a first center shaft, the outlet is located in the first side of the first center shaft, the first bent section is bent and extends from the main flow section to the second side of the first center shaft, and the first side of the first center shaft is opposite to the second side of the first center shaft.

Description

Technical Field

[0001] The present application relates to the technical field of oral cleaning, and more specifically, to a nozzle of a water flosser and a water flosser. Background Art

[0002] An oral irrigator is an electronic device that can clean the oral cavity, and usually includes a body and a nozzle, wherein the nozzle includes a nozzle tube and a nozzle head. Currently, most oral irrigators use a standard hot-bent nozzle to rinse teeth, which is easy to rinse the teeth at the front of the mouth. If you want to rinse the teeth deep in the mouth, such as when grinding your teeth, you need to open your mouth wide, and it is difficult to clean the residue between the teeth deep in the mouth, resulting in poor cleaning effect. Summary of the invention

[0003] Embodiments of the present application provide a nozzle of a water flosser and a water flosser.

[0004] A nozzle of a water flosser according to an embodiment of the present application includes a nozzle. The nozzle is provided with an inlet, an outlet, and a flow channel connecting the inlet and the outlet. The nozzle has at least a first bend and a second bend to form a main flow section, a first bend section, and a second bend section that are connected in sequence in the direction from the inlet to the outlet. The first bend section is located between the first bend and the second bend, and the second bend section is located between the second bend and the outlet. The extension direction of the first bend section is different from the extension direction of the main flow section, and the extension direction of the first bend section is different from the extension direction of the second bend section. The flow channel on the main flow section has a first central axis, the outlet is located on a first side of the first central axis, the first bend section bends and extends from the main flow section toward the second side of the first central axis, and the first side of the first central axis is opposite to the second side of the first central axis.

[0005] The nozzle of the present application has a first bending section and a second bending section. The first bending section bends and extends from the main flow section to the second side of the first central axis of the main flow section, and the second bending section bends and extends from the first bending section. When the nozzle is extended into the oral cavity and cleans the deep part of the oral cavity to be cleaned, the first bending section is closer to the lips and the teeth at the front end of the oral cavity than the second bending section, and the second bending section is deeper into the oral cavity and closer to the teeth at the deep part of the oral cavity than the first bending section. In addition, since the first bending section bends and extends toward the second side of the first central axis of the main flow section, the first bending section and the main flow section can form a first space together on the second side of the first central axis. The first space can provide a space for the lips and the teeth at the front end of the oral cavity when the nozzle cleans the deep part of the oral cavity to be cleaned, so as to avoid the lips and the teeth at the front end of the oral cavity. On the one hand, it can prevent the nozzle from knocking against the lips and the teeth at the front end of the oral cavity to avoid damage to the human body. On the other hand, it can increase the amplitude of the nozzle turning and shifting in the oral cavity, expand the cleaning area of ​​the nozzle, and on the other hand, it does not require the user to open his mouth wide, which is convenient for the nozzle to enter the mouth.

[0006] In some embodiments, the first bending section includes a first connection port connected to the main flow section and a second connection port connected to the second bending section. The center of the first connection port and the center of the second connection port have a first center line, and the value range of the angle α1 between the first center axis and the first center line is [150°, 175°].

[0007] When the angle α1 between the first center axis and the first center line is in the range of [150°, 175°], the nozzle is easier to rotate and shift in the oral cavity, and can also form a first space of a reasonable size to provide accommodation space for the lips and teeth at the front of the mouth when the nozzle cleans the area to be cleaned deep in the mouth, thereby avoiding the lips and teeth at the front of the mouth.

[0008] In some embodiments, the second bending segment bends from the first bending segment toward the first side of the first central axis.

[0009] The second bending section bends from the first bending section toward the first side of the first central axis, so that the second bending section can go deeper into the oral cavity and closer to the teeth deep in the oral cavity than the first bending section, and the second bending section and the first bending section can form a second space together on the first side of the first central axis. The second space can provide a space for the teeth or gums around the area to be cleaned when the nozzle cleans the area to be cleaned deep in the oral cavity, so as to avoid the teeth or gums around the area to be cleaned, thereby allowing the second bending section to have a larger turning angle, which is conducive to the nozzle turning and shifting in the oral cavity, so that the fluid sprayed by the nozzle can be aimed at and clean the interdental spaces of the teeth deep in the oral cavity and other areas that are difficult to clean. At the same time, the second bending portion can slow down the flow of the fluid entering the second bending section from the first bending section. Combined with the slow flow of the first bending section, the two slow flows can reduce the impact of the fluid on the oral cavity.

[0010] In some embodiments, the first bending section includes a first connection port connected to the main flow section and a second connection port connected to the second bending section, and the center of the first connection port and the center of the second connection port have a first center line. The second bending section includes a second connection port connected to the first bending section and the outlet, and the center of the second connection port and the center of the outlet have a second center line, and the value range of the angle α2 between the first center line and the second center line is [90°, 135°].

[0011] The value range of the angle α2 between the first center line and the second center line is [90°, 135°], which can provide a reasonable amount of avoidance space to avoid other parts of the oral cavity, and can also provide a reasonable bending angle to make it easier to clean teeth deep in the oral cavity.

[0012] In some embodiments, the nozzle further includes a nozzle connected to the nozzle pipe. The nozzle includes a channel running through opposite ends, the channel is connected to the flow channel, the channel has a liquid inlet at one end close to the flow channel, and has a liquid outlet at one end away from the flow channel. The first bending section includes a first connection port connected to the main flow section and a second connection port connected to the second bending section, and the second bending section includes a second connection port connected to the first bending section and the outlet. The main flow section includes a first sub-segment and a second sub-segment, the first sub-segment is used to connect to the body 300 of the water flosser, and the second sub-segment connects the first sub-segment and the first bending section. The length L1 of the second sub-segment, the distance L2 between the first connection port and the second connection port, and the distance L3 between the second connection port and the liquid outlet satisfy: L1>L2>L3.

[0013] The length L1 of the second subsection is the longest, which can provide enough length for the nozzle to penetrate deep into the oral cavity. The distance L3 between the second connecting port and the liquid outlet is the shortest, and the shorter length is conducive to the turning and displacement of the second bending section inside the oral cavity.

[0014] In certain embodiments, the flow area of ​​the channel gradually increases in the direction from the liquid inlet to the liquid outlet.

[0015] The flow area of ​​the channel gradually increases, allowing the fluid to be sprayed into the oral cavity in an outward-expanding manner, which can expand the fluid coverage range and thus increase the cleaning area of ​​the nozzle in the oral cavity. At the same time, the flow area of ​​the channel gradually increases, which can also slow down the flow rate of the fluid in the channel and reduce the fluid flow rate at the liquid outlet, thereby preventing excessive impact on the oral cavity due to excessive fluid flow rate.

[0016] In some embodiments, the length L1 of the second sub-segment and the distance L2 between the first connection port and the second connection port satisfy: the value range of L1:L2 is [1.5, 3].

[0017] The value range of L1:L2 is [1.5, 3], which can make the length of the second sub-segment L1 appropriate, which is conducive to the nozzle to penetrate deep into the oral cavity without occupying too much volume. At the same time, the appropriate ratio of L1:L2 is also conducive to process molding.

[0018] In some embodiments, the distance L2 between the first connection port and the second connection port, and the distance L3 between the second connection port and the liquid outlet satisfy: the value range of L2:L3 is [1.2, 3].

[0019] The value range of L2:L3 is [1.2, 3], which can provide a first space of reasonable size, so as to provide accommodation space for the lips and the teeth at the front of the mouth when the nozzle cleans the area to be cleaned deep in the mouth, so as to avoid the lips and the teeth at the front of the mouth. At the same time, the ratio of L2:L3 is appropriate, which is convenient for the nozzle to enter the mouth, and is also convenient for the nozzle to rotate and shift in the mouth, and is conducive to process molding.

[0020] In some embodiments, the first bending segments and the main segment on both sides of the first bend are connected by a smooth curve to form a first curve. The first bending segments and the second bending segments on both sides of the second bend are connected by a smooth curve to form a second curve. The ratio of the bending radius R1 of the first curve to the bending radius R2 of the second curve is in the range of [1.2, 3.5].

[0021] The ratio of the bending radius R1 of the first curve to the bending radius R2 of the second curve is in the range of [1.2, 3.5], which can ensure that the first curve and the second curve are smooth and easy to form, and the first bending section and the second bending section have a buffering effect on the water flow, and the buffering effect does not affect the flushing force of the water flow.

[0022] In certain embodiments, the longitudinal section of the first bending section is coplanar with the longitudinal section of the second bending section, which facilitates molding and is convenient for the nozzle inlet.

[0023] In some embodiments, the longitudinal section of the first bending section is not coplanar with the longitudinal section of the second bending section, so the nozzle can have a larger adjustment angle.

[0024] In some embodiments, the flow channel includes a first flow channel and a second flow channel that are connected, the main section and the first bending section are provided with the first flow channel, the second bending section is provided with the second flow channel, and the flow area of ​​the first flow channel is greater than the flow area of ​​the second flow channel.

[0025] The flow area of ​​the first flow channel is larger than the flow area of ​​the second flow channel, so that the fluid can flow faster in the second flow channel after passing through the first flow channel, thereby increasing the water pressure of the fluid ejected from the outlet and improving the flushing effect.

[0026] In some embodiments, the nozzle further includes a nozzle head connected to the nozzle pipe, and the nozzle pipe and the nozzle head are an integral structure.

[0027] The integrated structure can enhance the bonding strength between the nozzle and the nozzle, preventing the nozzle from separating from the nozzle during operation, thereby ensuring the stability and reliability of the nozzle operation.

[0028] In certain embodiments, the nozzle further comprises a nozzle head connected to the nozzle pipe, the nozzle pipe and the nozzle head are separate structures, and the nozzle pipe and the nozzle head are detachably connected.

[0029] The nozzle pipe and the nozzle are detachably connected, which is convenient for replacing the nozzle and the nozzle pipe, so that the nozzle pipe can be adapted to more types of nozzles, thereby reducing the replacement cost for users.

[0030] In certain embodiments, the nozzle further comprises a nozzle head connected to the nozzle pipe, the nozzle pipe and the nozzle head are separate structures, and the nozzle pipe and the nozzle head are non-detachably connected.

[0031] The nozzle pipe and the nozzle are connected in an indestructible manner, so that a gap can be avoided at the connection between the nozzle pipe and the nozzle, and the waterproof effect is good.

[0032] In some embodiments, the inner wall of the nozzle is provided with a groove, the outer wall of the nozzle pipe is provided with a limiting protrusion, and the nozzle pipe and the nozzle are connected by the groove and the limiting protrusion.

[0033] The nozzle pipe and the nozzle head are connected to each other through the cooperation of the groove and the limiting protrusion, so that the nozzle head is not easy to fall off the nozzle pipe.

[0034] In some embodiments, the spray head is soft glue.

[0035] The nozzle made of soft rubber material has good elasticity and flexibility. It can fit better with the area to be cleaned, and can also provide a certain buffer to prevent the nozzle from hitting the gums or teeth and prevent damage to the oral cavity.

[0036] In some embodiments, the nozzle includes a channel running through two opposite ends, the channel is connected to the flow channel, the channel has a liquid inlet at one end close to the flow channel and a liquid outlet at one end away from the flow channel, and a notch is provided on the peripheral wall of the liquid outlet.

[0037] The notch can be against the edges of the two teeth around the gap, making it easier for the liquid outlet to fit the teeth while also leaving a certain amount of space for the water flow to expand outward, thereby expanding the nozzle's flushing area. The notch also makes it easier for the nozzle to deform to fit more of the gap depth, further improving the cleaning effect on the gap.

[0038] In some embodiments, the nozzle includes a channel running through two opposite ends, the channel is connected to the flow channel, the channel has a liquid inlet at one end close to the flow channel and a liquid outlet at one end away from the flow channel, and the width of the outer contour of the longitudinal section of the nozzle first gradually increases and then gradually decreases.

[0039] When cleaning the gap between teeth, the maximum width of the outer contour of the longitudinal section of the nozzle can abut against the tooth surfaces of two adjacent teeth in the gap, so that the liquid outlet can spray water to the gap between the two adjacent teeth to clean the gap. The width of the outer contour of the longitudinal section of the nozzle gradually increases and then gradually decreases, that is, the width at the liquid outlet is small, which allows the liquid outlet to penetrate into the smaller area in the oral cavity and clean, and is conducive to the rotation and displacement of the liquid outlet in the smaller area.

[0040] In certain embodiments, the outer wall of the nozzle pipe is connected to the inner wall of the nozzle head through threaded engagement, and bristles are provided at one end of the nozzle head away from the nozzle pipe.

[0041] The bristles can improve the cleaning effect. While the water flosser is rinsing the area to be cleaned, the bristles can sweep away the residue on the surface of the area to be cleaned.

[0042] A dental flosser according to an embodiment of the present application comprises a nozzle and a body as described in any one of the above embodiments. The nozzle is connected to the body.

[0043] When the nozzle is extended into the oral cavity and cleans the deep part of the oral cavity to be cleaned, the nozzle has a first bending section and a second bending section. The first bending section bends and extends from the main flow section toward the second side of the first central axis of the main flow section, and the second bending section bends and extends from the first bending section. When the nozzle is extended into the oral cavity and cleans the deep part of the oral cavity to be cleaned, the first bending section is closer to the lips and the teeth at the front end of the oral cavity than the second bending section, and the second bending section is deeper into the oral cavity and closer to the teeth at the deep part of the oral cavity than the first bending section. In addition, since the first bending section bends and extends toward the second side of the first central axis of the main flow section, the first bending section and the main flow section can form a first space together on the second side of the first central axis. The first space can provide a accommodating space for the lips and the teeth at the front end of the oral cavity when the nozzle cleans the deep part of the oral cavity to be cleaned, so as to avoid the lips and the teeth at the front end of the oral cavity. On the one hand, it can prevent the nozzle from knocking against the lips and the teeth at the front end of the oral cavity to avoid damage to the human body. On the other hand, it can increase the amplitude of the nozzle turning and shifting in the oral cavity, expand the cleaning area of ​​the nozzle, and on the other hand, it does not require the user to open his mouth wide, so that the nozzle can be conveniently put into the mouth.

[0044] Additional aspects and advantages of the embodiments of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the embodiments of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0046] Figure 1 is a schematic diagram of the three-dimensional structure of the nozzle of some embodiments of the present application;

[0047] Figure 2 yes Figure 1 A schematic cross-sectional view of the nozzle shown;

[0048] Figure 3 It is a three-dimensional assembly schematic diagram of the nozzle of other embodiments of the present application;

[0049] Figure 4 yes Figure 3 A three-dimensional exploded schematic diagram of the nozzle shown;

[0050] Figure 5 yes Figure 3 A schematic cross-sectional view of the nozzle shown;

[0051] Figure 6 is a three-dimensional assembly schematic diagram of a nozzle according to some other embodiments of the present application;

[0052] Figure 7 yes Figure 6 A three-dimensional exploded schematic diagram of the nozzle shown;

[0053] Figure 8 yes Figure 6 A schematic cross-sectional view of the nozzle is shown.

[0054] Fig. 9 yes Figure 6 A three-dimensional schematic diagram of a partial structure of the nozzle shown

[0055] Fig.10 is a three-dimensional assembly schematic diagram of a nozzle in some other embodiments of the present application;

[0056] Fig.11 yes Fig.10 A three-dimensional exploded schematic diagram of the nozzle shown;

[0057] Fig.12 yes Fig.11 A schematic cross-sectional view of the nozzle shown;

[0058] Fig.13 It is a schematic diagram of the three-dimensional structure of the oral irrigator in certain embodiments of the present application.

[0059] Description of main component symbols:

[0060] Water flosser 1000, nozzle 100, body 300;

[0061] Nozzle 10, inlet 11, outlet 12, flow channel 13, first flow channel 131, second flow channel 133, first bend 14, second bend 15, main flow section 16, first side 161, second side 163, first sub-segment 165, second sub-segment 167, first bending section 17, first connecting port 171, second connecting port 173, second bending section 18, outer wall 19, limiting protrusion 191, nozzle 30, channel 31, liquid inlet 33, liquid outlet 35, peripheral wall 351, notch 3511, inner wall 37, groove 371, bristles 39. DETAILED DESCRIPTION

[0062] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions from beginning to end. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the embodiments of the present application, and cannot be understood as limiting the embodiments of the present application.

[0063] In the description of the present application, it should be understood that the terms "thickness", "upper", "top", "bottom", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0064] In the description of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. In an example, it can be a fixed connection, or a detachable connection, or an integral connection; it can be a mechanical connection, or an electrical connection, or they can communicate with each other; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements.

[0065] In the embodiments of the present application, a first feature being “above” or “below” a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being “above”, “above”, and “above” a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0066] The water flosser 1000 ( Fig.13 ) includes a nozzle 100 and a body 300 ( Fig.13 As shown), the nozzle 100 is connected to the fuselage 300.

[0067] See also Figure 1 and Figure 2 ,or Figure 3 and Figure 4 ,or Figure 6 and Figure 7 ,or Fig.10 and Fig.11 The nozzle 100 of the present application includes a nozzle 10, which is provided with an inlet 11, an outlet 12, and a flow channel 13 connecting the inlet 11 and the outlet 12. The nozzle 10 has at least a first bend 14 and a second bend 15, so as to form a main flow section 16, a first bend section 17, and a second bend section 18 connected in sequence in the direction from the inlet 11 to the outlet 12. The first bend section 17 is located between the first bend 14 and the second bend 15, and the second bend section 18 is located between the second bend 15 and the outlet 12. The extension direction of the first bend section 17 is different from the extension direction of the main flow section 16, and the extension direction of the first bend section 17 is different from the extension direction of the second bend section 18. The flow channel 13 on the main flow section 16 has a first central axis C, the outlet 12 is located on the first side 161 of the first central axis C, the first bending section 17 bends and extends from the main flow section 16 toward the second side 163 of the first central axis C, and the first side 161 of the first central axis C is opposite to the second side 163 of the first central axis C.

[0068] Specifically, the nozzle 100 is used to spray the fluid in the body 300 into the user's oral cavity in the form of a relatively thin water line, so as to clean the area to be cleaned in the oral cavity. The area to be cleaned in the oral cavity includes, but is not limited to, difficult-to-clean areas such as the gaps between teeth and the gingival sulcus. The material of the nozzle 100 includes, but is not limited to, plastic, silicone, or metal. In the case where the material of the nozzle 100 is plastic, the nozzle 100 is light in weight, low in cost, and easy to process. In the case where the material of the nozzle 100 is silicone, the nozzle 100 is relatively soft, has good elasticity, and will not harm oral tissue. In the case where the material of the nozzle 100 is metal, the nozzle 100 has high strength, a long service life, and is easy to clean and maintain.

[0069] In some embodiments, the nozzle 100 may include a nozzle 10 and a nozzle 30. The nozzle 10 is used to connect with the body 300 and deliver fluid to the nozzle 30. When in use, the fluid in the liquid storage space of the pump body inside the body 300 is pumped into the flow channel 13 from the inlet 11 of the nozzle 10, and then sprayed from the outlet 12 to the nozzle 30, and the nozzle 30 sprays the fluid to the area to be cleaned in the oral cavity. The shape of the cross section of the flow channel 13 includes but is not limited to a perfect circle, an ellipse or a polygon, etc. In the present application, the shape of the cross section of the flow channel 13 is a circle. In some embodiments, the nozzle 10 and the nozzle 30 are an integrated structure, that is, the nozzle 10 and the nozzle 30 are an integral structure, thereby improving the bonding strength between the nozzle 10 and the nozzle 30, preventing the nozzle 10 and the nozzle 30 from separating during the operation of the nozzle 100, thereby ensuring the stability and reliability of the operation of the nozzle 100. In other embodiments, the nozzle 10 and the nozzle 30 are split structures, that is, the nozzle 10 and the nozzle 30 are two different structures. In one example, the nozzle 10 and the nozzle 30 can be connected together in a detachable connection, including but not limited to a snap connection or a threaded connection, which is conducive to the replacement of the nozzle 30 and the nozzle 10, so that the nozzle can be adapted to more types of nozzles, reducing the user's replacement cost. In another example, the nozzle 10 and the nozzle 30 can be connected together in a non-detachable connection, including but not limited to bonding or welding, which can avoid gaps at the connection between the nozzle 10 and the nozzle 30, and has a good waterproof effect. Among them, the material of the nozzle 10 can be the same as the material of the nozzle 30, for example, the material of the nozzle 10 and the material of the nozzle 30 are both PP plastic; or, the material of the nozzle 10 and the material of the nozzle 30 can also be different, for example, the material of the nozzle 10 is PP plastic, and the material of the nozzle 30 is soft rubber.

[0070] The nozzle 10 may include a mainstream section 16, a first bend section 17, and a second bend section 18. The nozzle 10 includes at least a first bend 14 and a second bend 15. The inlet 11 to the first bend 14 of the nozzle 10 is the mainstream section 16, the first bend 14 to the second bend 15 of the nozzle 10 is the first bend section 17, and the second bend 15 to the outlet 12 of the nozzle 10 is the second bend section 18. The bending methods of the nozzle 10 include but are not limited to hot bending, mechanical bending, etc. In the present application, the nozzle 10 is formed by hot bending to form the first bend 14 and the second bend 15. The first bend 14 and the second bend 15 can be formed by hot bending once or twice. It can be understood that the flow channel 13 runs through the mainstream section 16, the first bend section 17, and the second bend section 18. The flow area of ​​the flow channel 13 in the main flow section 16, the flow area of ​​the flow channel 13 in the first bending section 17, and the flow area of ​​the flow channel 13 in the second bending section 18 may be the same, different, or partially the same.

[0071] Further, the extension direction of the first bending section 17 is different from the extension direction of the main flow section 16. In the embodiment of the present application, the extension direction of the main flow section 16 is the third direction Z, and the extension direction of the first bending section 17 is different from the extension direction of the main flow section 16, that is, the first bending section 17 is bent at the first bending location 14 relative to the main flow section 16. Further, the extension direction of the first bending section 17 is different from the extension direction of the second bending section 18, that is, the second bending section 18 is bent at the second bending location 15 relative to the first bending section 17. Among them, the extension direction of the second bending section 18 and the extension direction of the main flow section 16 may be the same or different.

[0072] The flow channel 13 in the main flow section 16 has a first central axis C. Since the extension direction of the main flow section 16 of the present application is the third direction Z and there is no bend, the first central axis C is the central axis of the main flow section 16. Assuming that the shortest distance line between the center of the outlet 12 and the first central axis C forms a first plane, with a reference plane perpendicular to the first plane and passing through the first central axis C as the boundary, the side where the outlet 12 is located is the first side 161 of the first central axis C, and the other side where the outlet 12 is not located is the second side 163 of the first central axis C.

[0073] Furthermore, the main flow section 16 is used to allow the fluid in the body 300 to flow through. When the user uses the water flosser 1000, the water in the liquid storage space of the body 300 flows through the main flow section 16 and the bending section and is sprayed into the user's mouth to clean the gaps between teeth and the gingival sulcus. The main flow section 16 can be a linear column structure. It can be understood that the linear column here refers to a column whose first central axis C is a straight line. The flow channel 13 in the main flow section 16 is also linear, and the flow area of ​​each position of the flow channel 131 in the main flow section 16 can be equal, so that when the water flows in the main flow section 16, it is not easy to generate turbulence, and the energy loss of the water flow is small.

[0074] When the user uses the oral irrigator 1000, the first curved segment 17 and the second curved segment 18 go deeper into the user's oral cavity than the main segment 16. The first curved segment 17 and the second curved segment 18 are bent relative to the main segment 16. On the one hand, the second curved segment 18 can better penetrate into the oral cavity, corresponding to the gaps between teeth and gingival sulci waiting to be cleaned. On the other hand, the bending of the first curved segment 17 and the second curved segment 18 compared to the main segment 16 can also take into account the size of teeth, gums and lips, which is conducive to the turning and displacement of the nozzle 100 in the oral cavity. In the process of using the nozzle 100, the user does not need to significantly adjust the posture of the arm to facilitate comprehensive cleaning of the oral cavity, which can further improve the user's use experience.

[0075] More specifically, the first bending section 17 bends and extends from the main flow section 16 toward the second side 163 of the first central axis C of the main flow section 16, and the second bending section 18 bends and extends from the first bending section 17. When the nozzle 100 is extended into the oral cavity and cleans the area to be cleaned deep in the oral cavity, the first bending section 17 is closer to the lips and the teeth at the front end of the oral cavity than the second bending section 18, and the second bending section 18 is deeper into the oral cavity and closer to the teeth deep in the oral cavity than the first bending section 17. In addition, since the first bending section 17 bends and extends toward the second side 163 of the first central axis C of the main flow section 16, the first bending section 17 and the main flow section 16 can form a first space together at the second side 163 of the first central axis C. The first space can provide accommodation space for the lips and teeth at the front of the mouth when the nozzle 100 cleans the area to be cleaned deep in the mouth, so as to avoid the lips and teeth at the front of the mouth. On the one hand, it can prevent the nozzle 100 from hitting the lips and teeth at the front of the mouth to avoid damage to the human body. On the other hand, it can increase the range of turning and displacement of the nozzle 100 in the mouth, expand the cleaning area of ​​the nozzle 100, and on the other hand, there is no need for the user to open his mouth wide, making it convenient for the nozzle 100 to enter the mouth.

[0076] The body 300 is used to provide liquid and power to the nozzle 100. A pump body (not shown) and a liquid storage space are usually provided in the body 300. When the water flosser 1000 is started, the pump body delivers the fluid in the liquid storage space to the nozzle 100. The fluid stored in the liquid storage space can be clean water, physiological saline, a special flushing liquid, or a liquid with a certain drug component. The body 300 is usually provided with a switch, a mode selection button, etc., and the user can choose the appropriate mode according to their needs to achieve the best cleaning effect. Furthermore, the body 300 can also be equipped with a display area, which can display information such as power and the current mode name in real time, so that the user can understand the status of the water flosser. The nozzle 100 is detachably connected to the body 300 to facilitate the maintenance and replacement of the nozzle 100 and / or the body 300. The detachable connection method includes but is not limited to a snap connection, a threaded connection or a screw connection.

[0077] In the above embodiment, the nozzle 100 is provided with a first bend 14 and a second bend 15 to form a first bend section 17 and a second bend section 18, so that the outlet 12 of the nozzle 100 is more inwardly retracted, and the effective working area of ​​the nozzle 100 can be expanded. The user does not need to open his mouth wide, which is convenient for entering the mouth, and can clean the residue between the teeth deep in the mouth, and the cleaning effect is better. The outlet 12 is located on the first side 161 of the first central axis C, and the first bend section 17 bends and extends from the main flow section 16 toward the second side 163 of the first central axis C. When the nozzle 100 is extended into the mouth, the first space formed by the main flow section 16 and the first bend section 17 on the second side 163 of the first central axis C can be used to avoid various parts of the mouth, so that the nozzle 100 can be extended into the deep part of the mouth to clean the teeth.

[0078] See also Figure 2 , Figure 3 , Figure 5 , Figure 6 ,or Fig.10 In some embodiments, the first bending section 17 includes a first connection port 171 connected to the main flow section 16 and a second connection port 173 connected to the second bending section 18. The center of the first connection port 171 and the center of the second connection port 173 have a first center line A, and the value range of the angle α1 between the first center axis C and the first center line A is [150°, 175°].

[0079] Specifically, the value of the angle α1 can be 150°, 152°, 155°, 157°, 159°, 161°, 164°, 166°, 169°, or 175°. If the angle α1 is less than 150°, the deviation angle of the first bending section 17 relative to the first central axis C is too large, resulting in the second connection port 173 also being too far away from the first central axis C. When the nozzle 100 is inserted into the oral cavity and rotated and shifted, the second connection port 173 is likely to touch the teeth or gums inside the oral cavity, which not only hinders the rotation and displacement of the nozzle 100 in the oral cavity, but also easily causes bumps and damages to the inside of the oral cavity. If α1 is greater than 175°, the first space formed by the main flow section 16 and the first bending section 17 on the second side 163 of the first central axis C is too small, and it is impossible to provide accommodation space for the lips and the teeth at the front end of the oral cavity when the nozzle 100 cleans the area to be cleaned deep in the oral cavity, and it is also impossible to avoid the lips and the teeth at the front end of the oral cavity.

[0080] When the angle α1 between the first center axis C and the first center line A is in the range of [150°, 175°], it is convenient for the nozzle 100 to rotate and shift in the oral cavity, and can also provide a first space of a reasonable size to provide accommodation space for the lips and the teeth at the front end of the oral cavity when the nozzle 100 cleans the area to be cleaned deep in the oral cavity, so as to avoid the lips and the teeth at the front end of the oral cavity.

[0081] See also Figure 2 or Figure 4 or Figure 7 or Fig.11 In some embodiments, the second bending segment 18 bends from the first bending segment 17 toward the first side 161 of the first central axis C.

[0082] Specifically, the second bending section 18 is bent from the first bending section 17 toward the first side 161 of the first central axis C, so that the second bending section 18 can be deeper into the oral cavity and closer to the teeth deep in the oral cavity than the first bending section 17, and the second bending section 18 and the first bending section 17 can form a second space together on the first side 161 of the first central axis C. When the nozzle 100 cleans the area to be cleaned deep in the oral cavity, the second space can provide a space for the teeth or gums around the area to be cleaned, so as to avoid the teeth or gums around the area to be cleaned, so that the second bending section 18 has a larger turning angle, which is conducive to the nozzle 100 turning and shifting in the oral cavity, so that the fluid sprayed by the nozzle 100 can be aimed at and clean the areas that are difficult to clean, such as the gaps between teeth deep in the oral cavity.

[0083] At the same time, the second bend 15 can slow down the flow of the fluid entering the second bend section 18 from the first bend section 17. Combined with the slow flow of the first bend section 17, the two slow flows can reduce the impact force of the fluid on the oral cavity.

[0084] See also Figure 1 , Figure 3 , Figure 6 ,or Fig.10 In some embodiments, the second bending section 18 includes a second connecting port 173 and an outlet 12 connected to the first bending section 17, the center of the second connecting port 173 and the center of the outlet 12 have a second center line B, and the angle α2 between the first center line A and the second center line B is in the range of [90°, 135°].

[0085] Specifically, the value of the angle α2 can be 90°, 93°, 95°, 99°, 103°, 109°, 114°, 120°, 126°, or 135°. If α2 is less than 90°, the second bend portion is too downward, and the outlet 12 is also too downward, resulting in a reduced working area; if α2 is greater than 135°, the second space formed by the first bend section 17 and the second bend section 18 on the first side 161 of the first central axis C is too small, and the avoidance effect on various parts of the oral cavity is limited.

[0086] The value range of the angle α2 between the first center line A and the second center line B is [90°, 135°], which can provide a reasonable amount of avoidance space to avoid other parts of the oral cavity, and can also provide a reasonable bending angle to make it easier to clean teeth deep in the oral cavity.

[0087] See also Figure 1 and Figure 2 (or Figure 4 and Figure 5 ,or Figure 7 and Figure 8 ,or Fig.11 and Fig.12 ), in some embodiments, the nozzle 30 includes a channel 31 passing through opposite ends, the channel 31 is connected to the flow channel 13, the end of the channel 31 close to the flow channel 13 has a liquid inlet 33, and the end away from the flow channel 13 has a liquid outlet 35. The first bending section 17 includes a first connection port 171 connected to the main flow section 16 and a second connection port 173 connected to the second bending section 18, and the second bending section 18 includes a second connection port 173 and an outlet 12 connected to the first bending section 17. The main flow section 16 includes a first sub-segment 165 and a second sub-segment 167, the first sub-segment 165 is used to connect to the body 300 of the water flosser, and the second sub-segment 167 connects the first sub-segment 165 and the first bending section 17. The length L1 of the second sub-segment 167, the distance L2 between the first connection port 171 and the second connection port 173, and the distance L3 between the second connection port 173 and the liquid outlet 35 satisfy: L1>L2>L3.

[0088] Specifically, after the fluid enters the nozzle 10 from the inlet 11, it circulates in the flow channel 13, the outlet 12, the liquid inlet 33, the channel 31 and the liquid outlet 35 in sequence, and finally flows out from the liquid outlet 35 to the part of the oral cavity to be cleaned to achieve cleaning. It can be understood that the outlet 12 is aligned with the liquid inlet 33 to achieve the flow of fluid from the flow channel 13 to the channel 31. The flow area of ​​the outlet 12 may be consistent with the liquid inlet 33, or it may not be consistent. The center of the outlet 12 may be the same as the center of the liquid inlet 33, or it may be different. The center of the outlet 12 is the same as the center of the liquid inlet 33, which allows the fluid to flow more smoothly in the process of entering the channel 31 from the flow channel 13. The center of the outlet 12 is different from the center of the liquid inlet 33, which allows the fluid entering the channel 31 from the outlet 12 to have a certain angle, so that the fluid flowing into the channel 31 impacts the inner wall 37 of the nozzle 30 and slows down the flow rate. The first subsection 165 is used to connect with the body 300 of the oral irrigator 1000. In one example, the first subsection 165 and the body 300 can be connected together in a detachable connection manner, and the detachable connection manner includes but is not limited to a snap connection or a threaded connection. In another example, the first subsection 165 and the body 300 can be connected together in a non-detachable connection manner, and the non-detachable connection manner includes but is not limited to bonding or welding. In the present application, the first subsection 165 is provided with a plurality of stepped protrusions and grooves 371 to be detachably connected with the body 300.

[0089] The length L1 of the second sub-segment 167, the distance L2 between the first connection port 171 and the second connection port 173, and the distance L3 between the second connection port 173 and the liquid outlet 35 satisfy: L1>L2>L3, and the length L1 of the second sub-segment 167 is the longest, which can provide sufficient length to facilitate the nozzle 100 to penetrate deep into the oral cavity. The distance L3 between the second connection port 173 and the liquid outlet 35 is the shortest, and the shorter length is conducive to the turning and displacement of the second bending segment 18 inside the oral cavity.

[0090] See also Figure 2 (or Figure 5 ,or Figure 8 ,or Fig.12 ), in some embodiments, the flow area of ​​the channel 31 gradually increases in the direction from the liquid inlet 33 to the liquid outlet 35.

[0091] Specifically, the flow area of ​​the channel 31 gradually increases, allowing the fluid to be sprayed into the oral cavity in an outwardly expanding manner, thereby expanding the fluid coverage range, and further increasing the cleaning area of ​​the nozzle 100 in the oral cavity. At the same time, it can also slow down the flow rate of the fluid in the channel 31 and reduce the flow rate of the fluid at the liquid outlet 35, thereby preventing the impact on the oral cavity due to excessive fluid flow rate.

[0092] See also Figure 1 (or Figure 3 ,or Figure 6 ,or Fig.10 ), in some embodiments, the length L1 of the second sub-segment 167 and the distance L2 between the first connection port 171 and the second connection port 173 also satisfy: the value range of L1:L2 is [1.5, 3].

[0093] Specifically, the value of L1:L2 can be 1.5, 1.8, 2, 2.2, 2.4, 2.6, 2.7, 2.8, 2.9, or 3. If the value of L1:L2 is less than 1.5, the length L1 of the second subsection 167 is insufficient, which is not conducive to the nozzle 100 penetrating deep into the oral cavity; if the value of L1:L2 is greater than 3, the length L1 of the second subsection 167 is too long, resulting in an overall length of the nozzle 10 being too long, occupying a larger volume, and being not conducive to user operation.

[0094] The value range of L1:L2 is [1.5, 3], which can make the length L1 of the second sub-segment 167 appropriate, which is conducive to the nozzle 100 to penetrate deep into the oral cavity without occupying too much volume. At the same time, the appropriate ratio of L1:L2 is also conducive to process molding.

[0095] See also Figure 1 (or Figure 3 ,or Figure 6 ,or Fig.10 ), in some embodiments, the distance L2 between the first connection port 171 and the second connection port 173 and the distance L3 between the second connection port 173 and the liquid outlet 35 satisfy: the value range of L2:L3 is [1.2, 3].

[0096] Specifically, the value of L2:L3 may be 1.2, 1.8, 2, 2.2, 2.4, 2.6, 2.7, 2.8, 2.9, or 3. If the value of L2:L3 is less than 1.2, the distance L2 between the first connection port 171 and the second connection port 173 is relatively close, and the first space formed by the first bending section 17 and the main flow section 16 on the second side 163 of the first central axis C is too small, and the avoidance effect on various parts of the oral cavity is limited; if the value of L2:L3 is greater than 3, the distance L2 between the first connection port 171 and the second connection port 173 is relatively far, which is not conducive to the nozzle 100 entering the mouth.

[0097] The value range of L2:L3 is [1.2, 3], which can provide a first space of reasonable size, so as to provide accommodation space for the lips and the teeth at the front of the mouth when the nozzle 100 cleans the area to be cleaned deep in the mouth, so as to avoid the lips and the teeth at the front of the mouth. At the same time, the ratio of L2:L3 is appropriate, which facilitates the nozzle 100 to enter the mouth, and also facilitates the rotation and displacement of the nozzle 100 in the mouth, and is conducive to process molding.

[0098] See also Figure 1 (or Figure 3 ,or Figure 6 ,or Fig.10 ), in some embodiments, the first bending segments 17 and the main segment 16 on both sides of the first bending point 14 are connected by a smooth curve to form a first curve. The first bending segments 17 and the second bending segments 18 on both sides of the second bending point 15 are connected by a smooth curve to form a second curve. The ratio of the bending radius R1 of the first curve to the bending radius R2 of the second curve is in the range of [1.2, 3.5].

[0099] Specifically, the ratio of R1:R2 is 1.2, 1.8, 2, 2.2, 2.4, 2.6, 2.7, 2.8, 2.9, or 3.5. If the ratio of R1:R2 is less than 1.2, the curvature of the second curve is not enough, and it cannot effectively approach the place to be cleaned, and the bend is too small, the slow flow effect of the water flow is not enough, the flow rate is too large, the impact on the human body is too strong, and the experience is not good. If the ratio of R1:R2 is greater than 3.5, the bending angle is too large, the first curve is not smooth enough, dust is easily accumulated at the first bend 14, and the bend is too large, the slow flow effect of the water flow is too large, the flow rate is not enough, and the flushing result is affected.

[0100] The ratio of the bending radius R1 of the first curve to the bending radius R2 of the second curve is in the range of [1.2, 3.5], which can ensure that the first curve and the second curve are smooth and easy to form, and the first bending section 17 and the second bending section 18 have a buffering effect on the water flow, and the buffering effect does not affect the flushing force of the water flow.

[0101] See also Figure 1 (or Figure 3 ,or Figure 6 ,or Fig.10 ), in some embodiments, the longitudinal section of the first bending segment 17 is coplanar with the longitudinal section of the second bending segment 18.

[0102] Specifically, the longitudinal section of the first bending section 17 is a section passing through the first center line A, and the longitudinal section of the second bending section 18 is a section passing through the second center line B. The longitudinal section of the first bending section 17 is coplanar with the longitudinal section of the second bending section 18, and the first connection port 171, the second connection port 173 and the outlet 12 are also coplanar, which is easy to shape and convenient for the inlet of the nozzle 100.

[0103] See also Figure 1 (or Figure 3 ,or Figure 6 ,or Fig.10 ), in some embodiments, the longitudinal section of the first bending segment 17 is not coplanar with the longitudinal section of the second bending segment 18.

[0104] Specifically, the longitudinal section of the first bending section 17 is not coplanar with the longitudinal section of the second bending section 18 , and the outlet 12 is not on the longitudinal section of the first bending section 17 , so the nozzle 100 can have a larger adjustment angle.

[0105] See also Figure 2 (or Figure 5 ,or Figure 8 ,or Fig.12 ), in some embodiments, the flow channel 13 includes a first flow channel 131 and a second flow channel 133 that are connected. The first flow channel 131 is closer to the inlet 11 than the second flow channel 133. The flow area of ​​the first flow channel 131 is greater than the flow area of ​​the second flow channel 133.

[0106] Specifically, the minimum flow area of ​​the first flow channel 131 is larger than the maximum flow area of ​​the second flow channel 133, which means that the minimum flow area of ​​the first flow channel 131 is also larger than the maximum flow area of ​​the second flow channel 133. This allows the fluid to flow faster in the second flow channel 133 after passing through the first flow channel 131, thereby increasing the water pressure of the fluid ejected from the outlet 12 and improving the flushing effect.

[0107] It should be noted that the nozzle 10 and the nozzle 30 can be arranged and combined to form a variety of nozzles 100. A variety of different nozzles 10 can be connected to the same nozzle 30 to form different nozzles 100, the same nozzle 10 can be connected to different nozzles 30 to form different nozzles 100, and different nozzles 100 can be connected to different nozzles 10 to form different nozzles 100.

[0108] For example, the following is a diagram showing that the same nozzle 10 is connected to two different nozzles 30 to form different nozzles 100 , wherein the nozzle 10 connected to the two nozzles 30 is the nozzle 10 in the above embodiment and also at least includes the effects of the above nozzle 10 .

[0109] See also Figure 8 In some embodiments, the inner wall 37 of the nozzle 30 is provided with a groove 371 , the outer wall 19 of the nozzle 10 is provided with a limiting protrusion 191 , and the nozzle 10 and the nozzle 30 are connected by the groove 371 and the limiting protrusion 191 .

[0110] Specifically, in one embodiment of the nozzle 30 , the nozzle pipe 10 and the nozzle head 30 are connected to each other by the cooperation of the groove 371 and the limiting protrusion 191 , so that the nozzle head 30 is not easy to fall off the nozzle pipe 10 .

[0111] See also Figure 8 In some embodiments, the nozzle 30 is a soft glue.

[0112] Specifically, the nozzle 30 can be made of soft rubber such as silicone, latex or synthetic rubber. The nozzle 30 made of soft rubber has good elasticity and flexibility, which can fit the area to be cleaned better and provide a certain buffer to prevent the nozzle 30 from hitting the gums or teeth and preventing damage to the oral cavity.

[0113] See also Fig. 9 In some embodiments, a peripheral wall 351 of the liquid outlet 35 is provided with a notch 3511 .

[0114] Specifically, the notch 3511 is provided on the peripheral wall 351 of the liquid outlet 35 and will not extend to the liquid inlet 33, so as to ensure that the structural strength of the nozzle 30 is better and is not prone to vibration cracking after long-term use. When the nozzle 30 is made of soft material, the notch 3511 is conducive to the soft nozzle 30 to have a certain distance with the nozzle 10 after deformation, so that the nozzle 10 will not directly contact the teeth. In addition, when cleaning the gap between teeth, the notch 3511 can abut against the edges of the two teeth around the gap between teeth, so that the liquid outlet 35 can fit the teeth while reserving a certain space for the water flow to expand outward, thereby expanding the flushing area of ​​the nozzle 100. The notch 3511 also makes the nozzle 30 more likely to deform, so as to adapt to more recessed depths between teeth, and can better clean the gap between teeth.

[0115] See also Figure 8 In some embodiments, in the direction from the liquid inlet 33 to the liquid outlet 35, the width of the outer contour of the longitudinal section of the nozzle 30 first gradually increases and then gradually decreases.

[0116] Specifically, when cleaning the gap between teeth, the maximum width of the outer contour of the longitudinal section of the nozzle 30 can abut against the tooth surfaces of two adjacent teeth in the gap, so that the liquid outlet 35 can spray water toward the gap between the two adjacent teeth to clean the gap. The width of the outer contour of the longitudinal section of the nozzle 30 gradually increases and then gradually decreases, that is, the width of the liquid outlet 35 is small, which allows the liquid outlet 35 to penetrate into the smaller area in the oral cavity and clean, which is conducive to the rotation and displacement of the liquid outlet 35 in the smaller area.

[0117] See also Fig.10 In some embodiments, the outer wall 19 of the nozzle 10 is connected to the inner wall 37 of the nozzle head 30 by threaded engagement, and bristles 39 are provided at one end of the nozzle head 30 away from the nozzle 10 .

[0118] Specifically, in another embodiment of the nozzle 30, the outer wall 19 of the nozzle 10 is connected to the inner wall 37 of the nozzle 30 by threaded fitting, which can facilitate the disassembly and replacement of the nozzle 30. The end of the nozzle 30 away from the nozzle 10 is provided with bristles 39, that is, the liquid outlet 35 is surrounded by bristles 39, and the bristles 39 can improve the cleaning effect. While the water flosser is rinsing the area to be cleaned, the bristles 39 can sweep away the residue on the surface of the area to be cleaned. The nozzle 30 can be made of hard material or soft material. For example, the nozzle 30 can be made of hard material, including but not limited to polypropylene (PP). The nozzle 30 made of hard material also has good corrosion resistance and high temperature resistance, and can be used for a long time in different environments. The bristles 39 can be the same material as the nozzle 30, or they can be different.

[0119] In the description of this specification, the description with reference to the terms "certain embodiments", "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0120] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, unless otherwise clearly and specifically defined.

[0121] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application. The scope of the present application is defined by the claims and their equivalents.

Claims

1. A nozzle for a water flosser, characterized in that: include: A nozzle, wherein the nozzle is provided with an inlet, an outlet and a flow channel connecting the inlet and the outlet, the nozzle having at least a first bend and a second bend to form a main flow section, a first bend section and a second bend section which are connected in sequence in the direction from the inlet to the outlet, the first bend section is located between the first bend and the second bend, the second bend section is located between the second bend and the outlet, an extension direction of the first bend section is different from an extension direction of the main flow section, an extension direction of the first bend section is different from an extension direction of the second bend section, the flow channel on the main flow section has a first central axis, the outlet is located on a first side of the first central axis, the first bend section bends and extends from the main flow section toward the second side of the first central axis, and the first side of the first central axis is opposite to the second side of the first central axis.

2. The nozzle according to claim 1, characterized in that The first bending section includes a first connecting port connected to the main flow section and a second connecting port connected to the second bending section; the center of the first connecting port and the center of the second connecting port have a first center line, and the value range of the angle α1 between the first center axis and the first center line is [150°, 175°].

3. The nozzle according to claim 1, characterized in that The second bending section bends from the first bending section toward a first side of the first central axis.

4. The nozzle according to claim 3, characterized in that The first bending section includes a first connecting port connected to the main flow section and a second connecting port connected to the second bending section, and the center of the first connecting port and the center of the second connecting port have a first center line; the second bending section includes a second connecting port connected to the first bending section and the outlet, and the center of the second connecting port and the center of the outlet have a second center line, and the value range of the angle α2 between the first center line and the second center line is [90°, 135°].

5. The nozzle according to claim 1, characterized in that The nozzle also includes a nozzle connected to the nozzle pipe, and the nozzle includes a channel running through two opposite ends, the channel is connected to the flow channel, the channel has a liquid inlet at one end close to the flow channel, and has a liquid outlet at one end away from the flow channel; the first bending section includes a first connecting port connected to the main flow section and a second connecting port connected to the second bending section, the second bending section includes a second connecting port connected to the first bending section and the outlet; the main flow section includes a first sub-segment and a second sub-segment, the first sub-segment is used to connect to the body of the water flosser, the second sub-segment connects the first sub-segment and the first bending section, the length L1 of the second sub-segment, the distance L2 between the first connecting port and the second connecting port, and the distance L3 between the second connecting port and the liquid outlet satisfy: L1>L2>L3.

6. The nozzle according to claim 5, characterized in that In the direction from the liquid inlet to the liquid outlet, the flow area of ​​the channel gradually increases.

7. The nozzle according to claim 5, characterized in that The length L1 of the second subsection, the distance L2 between the first connection port and the second connection port, and the distance L3 between the second connection port and the liquid outlet further satisfy: The value range of L1:L2 is [1.5, 3]; and / or, The value range of L2:L3 is [1.2, 3].

8. The nozzle according to claim 1, characterized in that The first bending section and the main section on both sides of the first bend are connected by a smooth curve to form a first curve, and the first bending section and the second bending section on both sides of the second bend are connected by a smooth curve to form a second curve. The ratio of the bending radius R1 of the first curve to the bending radius R2 of the second curve is in the range of [1.2, 3.5].

9. The nozzle according to claim 1, characterized in that The longitudinal section of the first bending section is coplanar with the longitudinal section of the second bending section; or, A longitudinal section of the first bending section is not coplanar with a longitudinal section of the second bending section.

10. The nozzle according to any one of claims 1 to 9, characterized in that: The flow channel includes a first flow channel and a second flow channel that are connected. The first flow channel is provided in the main flow section and the first bending section, and the second flow channel is provided in the second bending section. The flow area of ​​the first flow channel is greater than the flow area of ​​the second flow channel.

11. The nozzle according to any one of claims 1 to 9, characterized in that: The nozzle also includes a nozzle connected to the nozzle pipe; The nozzle and the nozzle are an integrated structure; or, The nozzle and the nozzle are separate structures, and the nozzle and the nozzle are detachably connected; or, The nozzle and the nozzle are separate structures, and the nozzle and the nozzle are non-detachably connected.

12. The nozzle according to claim 11, characterized in that The inner wall of the nozzle is provided with a groove, the outer wall of the nozzle pipe is provided with a limiting protrusion, and the nozzle pipe and the nozzle are connected with each other through the groove and the limiting protrusion.

13. The nozzle according to claim 12, characterized in that The nozzle is made of soft rubber.

14. The nozzle according to claim 12, characterized in that The nozzle includes a channel passing through two opposite ends, the channel is connected to the flow channel, the channel has a liquid inlet at one end close to the flow channel and a liquid outlet at one end away from the flow channel, and a notch is provided on the peripheral wall of the liquid outlet.

15. The nozzle according to claim 12, characterized in that The nozzle includes a channel running through two opposite ends, the channel is connected to the flow channel, the channel has a liquid inlet at one end close to the flow channel and a liquid outlet at one end away from the flow channel, and the width of the outer contour of the longitudinal section of the nozzle first gradually increases and then gradually decreases.

16. The nozzle according to claim 11, characterized in that The outer wall of the nozzle is connected to the inner wall of the nozzle through threaded cooperation, and bristles are arranged at one end of the nozzle away from the nozzle.

17. A water flosser, characterized in that: include: The nozzle according to any one of claims 1 to 16; and The nozzle is connected to the fuselage.

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