Oral irrigator nozzle and oral irrigator

Abstract

Nozzle (100) of an oral irrigator (1000), comprising: A spray tube (10) is provided with an inlet (11), an outlet (12), and a flow channel (13) connecting the inlet (11) and the outlet (12), the spray tube (10) having at least a first bend (14) and a second bend (15) such that a main flow section (16), a first bend section (17), and a second bend section (18) are formed, connected successively in the direction from the inlet (11) to the outlet (12), the first bend section (17) being located between the first bend and the second bend, and the second bend section (18) being located between the second bend and the outlet (12), the direction of expansion of the first bend section (17) being different from the direction of expansion of the main flow section (16), and the direction of expansion of the first bend section (17) being different from the direction of expansion of the main flow section (16). of the second bending section (18) differs,wherein the flow channel (13) has a first central axis (C) on the main flow section (16), the outlet (12) is located on the first side (161) of the first central axis (C), the first bending section (17) extends curved from the main flow section (16) to the second side (163) of the first central axis (C), and wherein the first side (161) of the first central axis (C) faces away from the second side (163) of the first central axis (C).

Description

TECHNICAL FIELD

[0001] The present application relates to the field of oral cleaning technology, more specifically to a nozzle of an oral irrigator and oral irrigator. STATE OF THE ART

[0002] An oral irrigator is an electronic device capable of cleaning the oral cavity. It usually consists of a body and a nozzle. The nozzle includes a spray tube and a spray head. Current oral irrigators mostly use a standard hot-bend nozzle for rinsing the teeth. It is easy to rinse the teeth at the front of the mouth, but to rinse the teeth deep into the oral cavity, such as when grinding teeth, the user must open their mouth wide. It is difficult to clean the interdental debris of the teeth deep in the oral cavity, and the cleaning effect is poor. CONTENT OF THIS APPLICATION

[0003] Embodiments of the application provide a nozzle of an oral irrigator and an oral irrigator.

[0004] In the first aspect, the nozzle of an oral irrigator according to the embodiment of the application comprises a spray tube. The spray tube is provided with an inlet, an outlet, and a flow channel connecting the inlet and the outlet. The spray tube has at least a first bend and a second bend, so that a main flow section, a first bend section, and a second bend section are formed, which are connected to each other 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 the first side of the first central axis, the first bending section extends in a curved manner from the main flow section to the second side of the first central axis, and the first side of the first central axis is facing away from the second side of the first central axis.

[0005] In the second aspect, an oral irrigator of the embodiment of the present application includes a nozzle and a device body. The nozzle includes a spray tube provided with an inlet, an outlet, and a flow channel connecting the inlet and the outlet. The spray tube 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 connected sequentially 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 the first side of the first central axis, the first bending section extends in a curved manner from the main flow section to the second side of the first central axis, and the first side of the first central axis faces away from the second side of the first central axis. The device body is connected to the nozzle.

[0006] When the nozzle penetrates the oral cavity and cleans a cleaning site deep in the oral cavity, the spray tube of the present application has a first bending portion and a second bending portion. The first bending portion bends and extends from the main flow portion toward the second side of the first central axis of the main flow portion, and the second bending portion bends and extends from the first bending portion. When the nozzle penetrates the oral cavity and cleans the cleaning site deep in the oral cavity, the first bending portion is closer to the lips and closer to the teeth at the front end of the oral cavity than the second bending portion, and the second bending portion extends deeper into the oral cavity and is closer to the teeth deep in the oral cavity than the first bending portion.Since the first bending portion bends and extends toward the second side of the first central axis of the main flow portion, the first bending portion and the main flow portion together can form a first space on the second side of the first central axis, and the first space can provide space for the lips and teeth at the front end of the oral cavity when the nozzle cleans the area to be cleaned in the deep part of the oral cavity, thus avoiding the lips and teeth at the front end of the oral cavity. On the one hand, this can prevent the spray tube from hitting the lips and teeth at the front end of the oral cavity and prevent damage to the human body. On the other hand, this can increase the amplitude of the nozzle rotation and displacement in the oral cavity, expand the cleaning range of the nozzle, and furthermore, the user does not need to open their mouth widely, which facilitates the penetration of the nozzle into the mouth.

[0007] Additional aspects and advantages of embodiments of the present application will be set forth in the description below, and some of which will be made more apparent from the description below or learned by practice of embodiments of the application. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] The above and / or further aspects and advantages of the present application will become clearer and easier to understand by the following description of the embodiments with reference to the accompanying drawings, in which: Fig. 1 is a schematic diagram of the three-dimensional structure of the nozzle of some embodiments of the present application; Fig. 2 a schematic sectional diagram of the Fig. 1 nozzle shown; Fig. 3 is a schematic three-dimensional assembly diagram of the nozzle of some embodiments of the present application; Fig. 4 a schematic three-dimensional exploded diagram of the nozzle as shown in Fig. 3 shown; Fig. 5 a schematic sectional diagram of the Fig. 3 nozzle shown; Fig. 6 is a schematic three-dimensional assembly diagram of the nozzle of the present application, which also includes some embodiments; Fig. 7 a schematic three-dimensional exploded diagram of the nozzle as shown in Fig. 6 shown; Fig. 8 a schematic sectional diagram of the Fig. 6 shown nozzle; Fig. 9 is a schematic representation of the three-dimensional structure of the nozzle substructure shown in Fig. 6 is shown Fig. 10 is a schematic three-dimensional assembly diagram of the nozzle of some embodiments of the present application; Fig. 11 a schematic three-dimensional exploded diagram of the nozzle as shown in Fig. 10 shown; Fig. 12 a schematic sectional diagram of the Fig. 11 shown nozzle; Fig. 13 is a schematic diagram of the three-dimensional structure of the oral irrigator of some embodiments of the present application. Reference symbols of the main elements:

[0009] Oral irrigator 1000; nozzle 100; device body 300; Spray tube 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 subsection 165; second subsection 167; first bend section 17; first connecting opening 171; second connecting opening 173; second bend section 18; outer wall 19; limiting projection 191; spray head 30; channel 31; liquid inlet 33; liquid outlet 35; peripheral wall 351; notch 3511; inner wall 37; groove 371; bristles 39. CONCRETE EMBODIMENTS

[0010] Embodiments of the present application will be discussed in more detail below, examples of which are illustrated in the accompanying drawings. Identical or similar reference numerals always represent identical or similar elements or elements with identical or similar functions.

[0011] The Oral Irrigator 1000 (shown in Fig. 13) of the embodiment of the present application comprises a nozzle 100 and a device body 300 (shown in Fig. 13), and the nozzle 100 is connected to the device body 300.

[0012] With reference to Fig. 1 and Fig. 2 or Fig. 3 and Fig. 4 or Fig. 6 and Fig. 7 or Fig. 10 and Fig. 11, the nozzle 100 of the present application comprises a spray tube 10, and the spray tube 10 is provided with an inlet 11, an outlet 12, and a flow channel 13 connecting the inlet 11 and the outlet 12. The spray tube 10 has at least a first bend 14 and a second bend 15, forming a main flow section 16, a first bend section 17, and a second bend section 18, which are connected to each other sequentially in the direction from the inlet 11 to the outlet 12. The first bending section 17 is located between the first bend 14 and the second bend 15, and the second bending section 18 is located between the second bend 15 and the outlet 12. The extension direction of the first bending section 17 differs from the extension direction of the main flow section 16, and the extension direction of the first bending section 17 differs from the extension direction of the second bending 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 extends in a curved manner from the main flow section 16 to the second side 163 of the first central axis C, and the first side 161 of the first central axis C faces away from the second side 163 of the first central axis C.

[0013] Specifically, the nozzle 100 is used to spray the liquid in the device body 300 into the user's oral cavity in the form of a thin water stream to clean the area to be cleaned in the oral cavity. The areas to be cleaned in the mouth include, among others, the difficult-to-clean areas between the teeth and the gingival sulcus. The material of the nozzle 100 is not limited to plastic, silicone, or metal. If the material of the nozzle 100 is plastic, the nozzle 100 is lightweight, inexpensive, and easy to process. If the material of the nozzle 100 is silicone, the nozzle 100 is softer, has better elasticity, and will not damage the oral tissue. If the material of the nozzle 100 is metal, the nozzle 100 has higher strength, a longer service life, and is easy to clean and maintain.

[0014] In some embodiments, the nozzle 100 may include a spray tube 10 and a spray head 30. The spray tube 10 is used to connect to the device body 300 and to convey the fluid from the device body 300 to the spray head 30. During use, the liquid in the liquid storage space inside the device body 300 is conveyed from the inlet 11 of the spray tube 10 into the flow channel 13 and then sprayed from the outlet 12 onto the spray head 30, and the spray head 30 is sprayed onto 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 elliptical or polygonal shape, etc., and in an optional embodiment of the present application, the shape of the cross-section of the flow channel 13 is circular. In some embodiments, the spray pipe 10 and the spray head 30 are formed in one piece, ieThe spray tube 10 and the spray head 30 are formed as one piece, which can improve the adhesive strength between the spray tube 10 and the spray head 30 and prevent the spray tube 10 and the spray head 30 from separating during the working process of the nozzle 100, thus ensuring the stability and reliability of the nozzle 100.

[0015] In some embodiments, the spray tube 10 and the spray head 30 are split structures, that is, the spray tube 10 and the spray head 30 are two different structures. In one example, the spray tube 10 and the spray head 30 can be combined with each other through a detachable connection, and the detachable connection includes, but is not limited to, a snap connection or a threaded connection, etc., which is conducive to the exchange of the spray head 30 and the spray tube 10, so that the spray tube 10 can be adapted to more nozzle types and the user's replacement costs are reduced. In another example, the spray tube 10 and the spray head 30 can be combined with each other through a non-detachable connection, and the non-detachable connection mode includes, but is not limited to, adhesive bonding or welding, etc., which can avoid the gap between the connection of the spray tube 10 and the spray head 30, and the waterproof effect is good. The material of the spray tube 10 and the material of the spray head 30 can be the same, for example, the material of the spray tube 10 and the material of the spray head 30 are PP plastic; or, the material of the spray tube 10 and the material of the spray head 30 can be different, for example, the material of the spray tube 10 is PP plastic and the material of the spray head 30 is soft rubber.

[0016] The spray tube 10 may include the main flow section 16, the first bend section 17, and the second bend section 18. The spray tube 10 includes at least the first bend 14 and the second bend 15. The inlet 11 to the first bend 14 of the spray tube 10 is the main flow section 16, the first bend 14 to the second bend 15 of the spray tube 10 is the first bend section 17, and the second bend 15 to the outlet 12 of the spray tube 10 is the second bend section 18. The manner of bending the spray tube 10 includes, but is not limited to, hot bending, mechanical bending, and so on. In an optional embodiment of the present application, the spray tube 10 adopts a hot bend to form the first bend 14 and the second bend 15. The first bend 14 and the second bend 15 may be formed by one hot bend and may also be formed by two hot bends.Understandably, the runner 13 runs through the main flow section 16, the first curved section 17 and the second curved 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 can be the same, different or partially identical.

[0017] Furthermore, the stretching direction of the first curved section 17 differs from that of the main flow section 16. In the embodiment of the application, the extension direction of the main flow section 16 is the third direction Z, and the extension direction of the first bent section 17 differs from the extension direction of the main flow section 16, i.e., the first bent section 17 is bent at the first bend 14 relative to the main flow section 16. Furthermore, the stretching direction of the first bent section 17 differs from that of the second bent section 18, i.e., the second bent section 18 is bent at the second bend 15 relative to the first bent section 17. The extension direction of the second bent section 18 and the extension direction of the main flow section 16 may or may not be the same.

[0018] The flow channel 13 in the main flow section 16 has a first central axis C, and since the extension direction of the main flow section 16 of the present application is the third direction Z, there is no bend, so the first central shaft C is the central axis of the main flow section 16. Assume that the center of the outlet 12 is connected to the shortest distance of the first central axis C to form the first plane, and the reference plane perpendicular to the first plane and passing through the first central axis C is 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 is the second side 163 of the first central axis C.

[0019] The main flow section 16 may be a linear cylinder structure, and it can be understood that the linear cylinder here refers to a cylinder 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 may be the same, so that when fluid flows in the main flow section 16, the turbulence phenomenon is not easy to occur and the energy loss of the fluid is small.

[0020] When the user uses the oral irrigator 1000, the first bending portion 17 and the second bending portion 18 penetrate deeper into the user's mouth than the main portion 16. On the one hand, the second bending portion 18 can better penetrate the oral cavity and correspond to the interdental space and gingival sulcus waiting to be cleaned. On the other hand, the first bending portion 17 and the second bending portion 18 can also take into account the dimensions of teeth, gums, and lips compared to the bending of the main flow portion 16, which is conducive to the nozzle 100 rotating and translating in the oral cavity. During the use of the nozzle 100, the user does not need to greatly adjust the posture of the arm to perform comprehensive cleaning of the oral cavity, which can further improve the user's experience.

[0021] In detail, the first bending section 17 bends and extends from the main flow section 16 to 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 projects 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 closer to the teeth at the front end of the oral cavity than the second bending section 18, and the second bending section 18 projects deeper into the oral cavity and is closer to the teeth deep in the oral cavity than the first bending section 17. 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 together on the second side 163 of the first central axis C can form a first form space.The first space can accommodate the lips and teeth at the front end of the oral cavity when the nozzle 100 cleans the area to be cleaned in the deep part of the oral cavity, avoiding the lips and teeth at the front end of the oral cavity. On the one hand, the spray tube 100 can be prevented from hitting the lips and teeth at the front end of the oral cavity, preventing damage to the human body. On the other hand, this can increase the amplitude of rotation and translation of the nozzle 100 in the oral cavity, expand the cleaning range of the nozzle 100, and furthermore, the user does not need to open their mouth widely, which facilitates the penetration of the nozzle 100 into the mouth.

[0022] The device body 300 is used to supply fluid and power to the nozzle 100. The device body 300 is typically equipped with a pump body (not shown) and a fluid storage chamber. When the oral irrigator 1000 is started, the pump body sends the fluid in the fluid storage chamber to the nozzle 100. The fluid stored in the storage chamber can be clean water, normal saline, a special rinsing solution, or a fluid containing certain drug ingredients. The device body 300 is typically equipped with switches, mode selection, and other buttons. Users can select the appropriate mode according to their needs to achieve the best cleaning effect.Furthermore, the device body 300 can also be equipped with a display area that can display the real-time power level, the name of the current mode, and other information that is convenient for the user to understand the status of the oral irrigator 1000.

[0023] In the embodiment, the nozzle 100 is provided with a first bend 14 and a second bend 15 to form a first bend portion 17 and a second bend portion 18, so that the outlet 12 of the nozzle 100 is more adducted, the effective working range of the nozzle 100 can be expanded, and the user does not need to open his mouth widely, and it is convenient to enter the mouth, and the interdental residue of the tooth deep in the oral cavity can be cleaned, and the cleaning effect is better.The outlet 12 is positioned on the first side 161 of the first central axis C, the first bending portion 17 extends from the main flow portion 16 toward the second side 163 of the first central axis C, and in the process of the nozzle 100 extending into the oral cavity, the first space jointly formed by the main flow portion 16 and the first bending portion 17 on the second side 163 of the first central axis C can be utilized to avoid various parts of the oral cavity, so that the nozzle 100 can protrude into the deep oral cavity to clean the teeth.

[0024] With reference to Fig. 2, Fig. 3, Fig. 5, Fig. 6 or Fig. 10, in some embodiments, the first bending section 17 includes a first connecting opening 171 communicating with the main flow section 16 and a second connecting opening 173 connected to the second bending section 18. The center of the first connecting opening 171 and the center of the second connecting opening 173 comprise a first central connecting line A, and the value range of the angle α1 between the first central axis C and the first central connecting line A is [150°, 175°].

[0025] Specifically, the angle α1 can be 150°, 152°, 155°, 157°, 159°, 161°, 164°, 166°, 169°, or 175°. When the angle α1 is less than 150°, the deviation angle of the first bending portion 17 relative to the first central axis C is too large, causing the second communication hole 173 to deviate too much from the first central axis C. When the nozzle 100 protrudes into the oral cavity and rotates and translates, the second communication hole 173 is likely to contact the teeth or gums in the oral cavity, which not only hinders the rotation and translation of the nozzle 100 in the oral cavity but also easily causes dent damage 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 cannot provide space for the teeth of the lips and the front of the oral cavity when the nozzle 100 cleans the deep part of the oral cavity and the teeth of the lips and the front of the oral cavity cannot be avoided.;

[0026] When the value range of the angle α1 between the first central axis C and the first central connecting line A is [150°, 175°], it is convenient for the nozzle 100 to rotate and translate in the oral cavity, and can also provide an appropriate size of the first space to make room for the teeth of the lips and the front of the oral cavity when the nozzle 100 cleans the place to be cleaned in the deep part of the oral cavity to avoid the teeth of the lips and the front of the oral cavity.

[0027] With reference to Fig. 2 or Fig. 4 or Fig. 7 or Fig. 11, in some embodiments, the second bending portion 18 is bent from the first bending portion 17 toward the first side 161 of the first central axis C.

[0028] Specifically, the second bending portion 18 is bent from the first bending portion 17 toward the first side 161 of the first central axis C, so that the second bending portion 18 can penetrate deeper into the oral cavity and be closer to the teeth deep in the oral cavity than the first bending portion 17, and the second bending portion 18 and the first bending portion 17 together form a second space on the first side 161 of the first central axis C. When the nozzle 100 cleans the area to be cleaned in the depths of the oral cavity, the second space can provide space for the teeth or gums around the area to be cleaned to avoid the teeth or gums around the area to be cleaned, so that the second bending portion 18 has a larger steering angle, which is conducive to the nozzle 100 rotating and translating in the oral cavity, so that the liquid ejected from the nozzle 100 can be directed to the parts that are not easy to clean, such as the teeth.the gap between the teeth in the deep oral cavity can be addressed and cleaned.

[0029] At the same time, the second bend 15 can slow down the flow of the liquid entering from the first bend section 17 into the second bend section 18, and in combination with the slow flow of the first bend section 17, the two slow flows can reduce the impact force of the liquid on the oral cavity.

[0030] With reference to Fig. 1, Fig. 3, Fig. 6 or Fig. 10, in some embodiments, the second bending section 18 has a second connection opening 173 and an outlet 12 connected to the first bending section 17, wherein the center of the second connection opening 173 and the center of the outlet 12 have a second central connection line B, and the value range of the angle α2 between the first central connection line A and the second central connection line B is [90°, 135°].

[0031] Specifically, the angle α2 can be 90°, 93°, 95°, 99°, 103°, 109°, 114°, 120°, 126°, or 135°. If α2 is less than 90°, the second bending portion 18 is excessively directed downward, and the outlet 12 is also excessively directed downward, resulting in a reduction of the working area. If α2 is greater than 135°, the second space formed by the first bending portion 17 and the second bending portion 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.

[0032] The angle α2 between the first midline A and the second midline B can be in the range of [90°, 135°], which can provide a reasonable size of the avoidance space, avoid other parts of the mouth, and also provide a reasonable bending angle, making it easier to clean the teeth deep in the mouth.

[0033] With reference to Fig. 1 and Fig. 2 (or Fig. 4 and Fig. 5 or Fig. 7 and Fig. 8 or Fig. 11 and Fig. 12), in some embodiments, the spray head 30 has a channel 31 penetrating through opposite two ends, the channel 31 communicates with the flow channel 13, an end of the channel 31 near the flow channel 13 has a liquid inlet 33, and an end remote from the flow channel 13 has a liquid outlet 35. The first bending section 17 comprises a first connecting opening 171 connected to the main flow section 16 and a second connecting opening 173 connected to the second bending section 18, and the second bending section 18 comprises the outlet 12. The main flow section 16 comprises a first subsection 165 and a second subsection 167, wherein the first subsection 165 is used for connection to the device body 300 of the oral irrigator, and the second subsection 167 connects the first subsection 165 and the first bending section 17.The length L1 of the second subsection 167, the distance L2 between the first connection opening 171 and the second connection opening 173 and the distance L3 between the second connection opening 173 and the liquid outlet 35 satisfy: L1>L2>L3.

[0034] Specifically, after entering the spray tube 10 from the inlet 11, the liquid flows sequentially into the flow channel 13, the outlet 12, the liquid inlet 33, the channel 31, and the liquid outlet 35, and finally flows out of the liquid outlet 35 to the location to be cleaned in the oral cavity to achieve cleaning. It is understood that the outlet 12 is aligned with the inlet port 33 to realize the liquid flow from the flow channel 13 to the channel 31. The flow area of ​​the outlet 12 may be consistent with the inlet port 33, or it may be inconsistent. The center of the outlet 12 may be identical to the center of the inlet 33, or it may not be identical. The center of the outlet 12 is the same as the center of the inlet 33 so that the fluid can flow more evenly when entering the channel 31 from the flow channel 13.The center of the outlet 12 differs from the center of the inlet 33, so that the fluid entering the channel 31 from the outlet 12 has a specific angle, so that the fluid flowing into the channel 31 impacts the inner wall 37 of the spray head 30, thereby slowing the flow velocity. The first subsection 165 is used to connect to the device body 300 of the oral irrigator 1000, and in one example, the first subsection 165 and the device body 300 can be combined with each other through a detachable connection mode to facilitate maintenance and replacement of the nozzle 100 and / or the device body 300. The detachable connection mode includes, but is not limited to, a snap connection or a threaded connection.In another example, the first subsection 165 and the device body 300 may be connected to each other by a non-releasable connection, including, but not limited to, gluing or welding. In the present application, the first subsection 165 is provided with a plurality of stepped projections and grooves for a releasable snap connection to the device body 300.

[0035] The length L1 of the second subsection 167, the distance L2 between the first connecting port 171 and the second connecting port 173, and the distance L3 between the second connecting port 173 and the liquid outlet 35 satisfy: L1>L2>L3. The length L1 of the second subsection 167 is the longest and is capable of providing the nozzle 100 with sufficient length to penetrate deep into the oral cavity. The distance L3 between the second connecting port 173 and the liquid outlet 35 is the shortest, and the shorter length is conducive to the steering and displacement of the second bending portion 18 in the oral cavity.

[0036] With reference to Fig. 2 (or Fig. 5 or Fig. 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.

[0037] Specifically, the flow area of ​​the channel 31 gradually increases, allowing the liquid to be sprayed into the oral cavity in an outward expansion mode, expanding the liquid coverage, and thus 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 liquid in the channel 31 and reduce the flow rate of the liquid at the liquid outlet 35 to prevent the impact on the oral cavity due to excessive flow rate.

[0038] With reference to Fig. 1 (or Fig. 3 or Fig. 6 or Fig. 10) In some embodiments, the length L1 of the second subsection 167, the distance L2 between the first connection opening 171 and the second connection opening 173 also satisfies the following: L1: L2 may be in the range of [1, 5, 3];

[0039] Specifically, L1:L2 can be 1.5, 1.8, 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 deep penetration of the nozzle 100 into the oral cavity. If the value of L1:L2 is greater than 3, the length of the second subsection 167 L1 is too long, resulting in the total length of the spray tube 10 being too long, the occupied volume becoming larger, and not conducive to the user's operation.

[0040] L1:L2 can be taken in the range of [1.5, 3], which allows the length of the second subsection 167 L1 to be appropriate, which is conducive to the nozzle 100 penetrating deeply into the oral cavity without taking up too much volume. At the same time, the ratio of L1:L2 is suitable, which is also conducive to process injection molding.

[0041] With reference to Fig. 1 (or Fig. 3 or Fig. 6 or Fig. 10) In some embodiments, the distance L2 between the first connection opening 171 and the second connection opening 173 and the distance L3 between the second connection opening 173 and the liquid outlet 35 is sufficient: L2: L3 may be in the range of [1, 5, 3];

[0042] Specifically, L2:L3 can be 1.5, 1.8, 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 connecting port 171 and the second connecting port 173 is narrower, and the first space formed by the first bending portion 17 and the main flow portion 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 connecting port 171 and the second connecting port 173 is wide, which is not conducive to the mouth of the nozzle 100.

[0043] L2:L3 is in the range of [1, 2, 3], which can provide an appropriate size of the first space to create space for the lips and teeth at the front of the mouth when the nozzle 100 cleans the deep part of the oral cavity to be cleaned, avoiding the teeth of the lips and the front of the mouth. At the same time, the ratio of L2:L3 is suitable, which is favorable for the nozzle 100 to enter the mouth and also conducive to the rotation and translation of the nozzle 100 in the oral cavity and to process molding.

[0044] With reference to Fig. 1 (or Fig. 3 or Fig. 6 or Fig. 10), in some embodiments, the first bend section 17 on both sides of the first bend 14 and the smooth curve of the main flow section 16 are connected to form the first bend. The first bend section 17 and the second bend section 18 are connected on both sides of the second bend 15 to form the second bend. The ratio of the bend radius R1 of the first bend to the bend radius R2 of the second bend is in the range of [1, 2, 3, 5].

[0045] Specifically, the ratio 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 R1:R2 is less than 1.2, the curvature of the second bend is insufficient, it cannot effectively approach the area to be cleaned, and the bend is too small. The impact on the slow water flow is insufficient, the flow rate is too large, and the impact on the human body is too strong and the experience is not good. If the ratio R1:R2 is greater than 3.5, the bend angle is too large, the first bend is not smooth enough, and dust is easy to accumulate at the first bend 14. The bend is too large, the slow flow effect on the water flow is too great, the flow rate is insufficient, and the washing result is affected.

[0046] 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 that the first bending section 17 and the second bending section 18 have a buffering effect on the fluid, and the buffering effect does not affect the flushing force of the fluid.

[0047] With reference to Fig. 1 (or Fig. 3 or Fig. 6 or Fig. 10), in some embodiments, the longitudinal section of the first bending section 17 is coplanar with the longitudinal section of the second bending section 18.

[0048] Specifically, the longitudinal section of the first bending portion 17 is the cross section passing through the first center line A, and the longitudinal section of the second bending portion 18 is the cross section passing through the second center line B. The longitudinal section of the first bending portion 17 is coplanar with the second bending portion 18, then the first connecting port 171, the second connecting port 173, and the outlet 12 are also coplanar, and although it is easy to form, it is also suitable for the nozzle inlet 100.

[0049] With reference to Fig. 1 (or Fig. 3 or Fig. 6 or Fig. 10), in some embodiments, the longitudinal section of the first bending section 17 is not coplanar with the longitudinal section of the second bending section 18.

[0050] Specifically, if the longitudinal section of the first bending section 17 is not coplanar with the longitudinal section of the second bending section 18, then the outlet 12 is not located on the longitudinal section of the first bending section 17, then the nozzle 100 can have a larger setting angle.

[0051] With reference to Fig. 2 (or Fig. 5 or Fig. 8 or Fig. 12), in some embodiments, the flow channel 13 comprises a connected first flow channel 131 and a second flow channel 133. The first flow 131 is closer to the inlet 11 than the second flow 133. The flow area of ​​the first impeller 131 is larger than that of the second impeller 133.

[0052] In particular, 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, so that the flow rate of the fluid in the second flow channel 133 after passing through the first flow channel 131 is faster and the water pressure of the fluid ejected from the outlet 12 is increased and the flushing effect is improved.

[0053] It should be noted that the spray pipe 10 and the spray head 30 can be arranged and combined to form a plurality of nozzles 100. A plurality of different spray pipes 10 can be connected to the same type of spray head 30 to form different nozzles 100, the same spray pipe 10 can be connected to different spray heads 30 to form different nozzles 100, and different nozzles 100 can be connected to form different nozzles 100.

[0054] For example, the same spray pipe 10 is connected to two different spray heads 30 to form different nozzles 100, wherein the nozzles 10 connected to the two spray heads 30 are the spray pipes 10 in the above embodiment and also include at least the action of the previous spray pipe 10.

[0055] With reference to Fig. 7 and Fig. 8, in some embodiments, the inner wall 37 of the spray head 30 is provided with a groove 371, the outer wall 19 of the spray tube 10 is provided with a restricting projection 191, and the spray tube 10 and the spray head 30 are connected to each other by the cooperation of the restricting projection 191 with the groove 371. That is, the spray tube 10 and the spray head 30 are connected to each other by the cooperation of the groove 371 and the restricting projection 191, so that the spray head 30 cannot easily fall out of the spray tube 10.

[0056] See Fig. 8, in some embodiments the spray head 30 is made of soft rubber.

[0057] Specifically, the nozzle 30 can be made of soft rubber, such as silicone, latex, or synthetic rubber. The nozzle 30 made of soft rubber material has good elasticity and flexibility, and can be more suitable for the area to be cleaned. It can also provide a certain cushion, preventing the nozzle 30 from hitting the gums or teeth and preventing damage to the oral cavity.

[0058] With reference to Fig. 9, in some embodiments, the peripheral wall 351 of the liquid outlet 35 is provided with a notch 3511.

[0059] Specifically, the notch 3511 is located on the peripheral wall 351 of the liquid outlet 35 and does not extend to the liquid inlet 33, so the structural strength of the spray head 30 is better, and the problem of vibration cracking is less likely to occur after long-term use. When the spray head 30 is made of a soft material, the notch 3511 is conducive to the softness of the spray head 30 and has a certain distance between the spray tube 10 after deformation, so that the spray tube 10 will not be in direct contact with the tooth. In addition, when cleaning between the teeth, the notch 3511 can be against the edge of two teeth around the tooth gap, so that the liquid outlet 35 can be attached to the teeth at the same time, and a certain space can be reserved for fluid expansion, thereby expanding the flushing range of the nozzle 100.The 3511 notch also makes the Sprinkler 30 more susceptible to deformation, allowing it to adapt to more interdental depths and is better able to clean between teeth.

[0060] With reference to Fig. 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 spray head 30 first gradually increases and then gradually decreases.

[0061] Specifically, when cleaning the interdental space, the width of the outer contour of the longitudinal section of the spray head 30 can be matched with the tooth surfaces of the two adjacent teeth between the teeth, so that the liquid outlet 35 is suitable for spraying water into the interdental space between the adjacent two teeth to clean the interdental space. The width of the outer contour of the longitudinal section of the spray head 30 first gradually increases and then gradually decreases, that is, the width of the liquid outlet 35 is smaller, and the liquid outlet 35 can penetrate and clean deeply into the area with less space in the oral cavity, which is conducive to the rotation and displacement of the liquid outlet 35 in the area with less space.

[0062] With reference to Fig.10, in some embodiments, the outer wall 19 of the spray tube 10 is connected to the inner wall 37 of the spray head 30 by a threaded fit, which can facilitate the disassembly and replacement of the spray head 30. An end of the spray head 30 facing away from the spray tube 10 is provided with bristles 39. This means that the liquid outlet is surrounded by bristles 39, which can improve the cleaning effect. When the oral irrigator rinses an area to be cleaned, the bristles 39 can brush off residues on the surface of the area to be cleaned. The spray head 30 can be made of a hard material or a soft material. For example, the spray head 30 can be made of a hard material, which can be, among other things, polypropylene (PP), but is not limited to this. The spray head 30 made of a hard material is also characterized by good corrosion and heat resistance and has a long service life in various environments.The bristles 39 can be made of the same material as the spray head 30 or of a different material.

Claims

[1] Nozzle (100) of an oral irrigator (1000), comprising: a spray pipe (10) provided with an inlet (11), an outlet (12) and a flow channel (13) connecting the inlet (11) and the outlet (12), wherein the spray pipe (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) which are connected to one another in sequence in the direction from the inlet (11) to the outlet (12), wherein the first bend section (17) is located between the first bend and the second bend and the second bend section (18) is located between the second bend and the outlet (12), wherein the extension direction of the first bend section (17) differs from the extension direction of the main flow section (16) and the extension direction of the first bend section (17) differs from the Extension direction of the second bending section (18) differs,wherein 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) is curved from the main flow section (16) to the second side (163) of the first central axis (C), and wherein the first side (161) of the first central axis (C) faces away from the second side (163) of the first central axis (C). [2] Nozzle (100) according to claim 1, wherein the first bending section (17) comprises a first connecting opening (171) connected to the main flow section (16) and a second connecting opening (173) connected to the second bending section (18); wherein the center of the first connecting opening (171) and the center of the second connecting opening (173) have a first connecting center line, and wherein the value range of the angle (α1) between the first central axis (C) and the first connecting center line is [150°, 175°]. [3] Nozzle (100) according to claim 1, wherein the second bending portion (18) is bent from the first bending portion (17) toward the first side (161) of the first central axis (C). [4] The nozzle (100) according to claim 3, wherein the first bending portion (17) comprises a first connecting hole (171) connected to the main flow portion (16) and a second connecting hole (173) connected to the second bending portion (18), and the center of the first connecting hole (171) and the center of the second connecting hole (173) have a first connecting centerline; the second bending portion (18) comprises a second connecting hole (173) connected to the first bending portion (17), and the outlet (12), the center of the second connecting hole (173) and the center of the outlet (12) have a second connecting centerline, and the value range of the angle (α2) between the first connecting centerline and the second connecting centerline is [90°, 135°]. [5] Nozzle (100) according to claim 1, further comprising a spray head (30) connected to the spray tube (10), wherein the spray head (30) has a channel (31) penetrating two opposite ends, wherein the channel (31) is in communication with the flow channel (13), wherein an end of the channel (31) facing the flow channel (13) has a liquid inlet (33) and an end facing away from the flow channel (13) has a liquid outlet (35); wherein the first bending section (17) comprises a first connecting opening (171) connected to the main flow section (16) and a second connecting opening (173) connected to the second bending section (18), and the second bending section (18) comprises a second connecting opening (173) connected to the first bending section (17) and an outlet (12);wherein the main flow section (16) comprises a first subsection (165) and a second subsection (167), wherein the first subsection (165) serves for connection to a device body (300) of the oral irrigator (1000) and the second subsection (167) is connected to the first subsection (165) and the first bending section (17), wherein the length (L1) of the second subsection (167), the distance (L2) between the first connection opening (171) and the second connection opening (173) and the distance (L3) between the second connection opening (173) and the liquid outlet (35) satisfy L1>L2>L3.; [6] Nozzle (100) according to claim 5, wherein in the direction from the liquid inlet (33) to the liquid outlet (35) the flow area of ​​the channel (31) gradually increases. [7] The nozzle (100) according to claim 5, wherein the length (L1) of the second sub-portion (167), the distance (L2) between the first connection opening (171) and the second connection opening (173), and the distance (L3) between the second connection opening (173) and the liquid outlet (35) further satisfy the following: L1: L2 is in the range of [1,5, 3]; and / or, L2: L3 is in the range [1,2, 3]. [8] Nozzle (100) according to claim 1, wherein the first bending section (17) and the main flow section (16) on both sides of the first bend (14) are connected to each other via a smooth curve, thus forming a first curve, while the first bending section (17) and the second bending section (18) on both sides of the second bend (15) are connected to each other via a smooth curve, thus forming a second curve, wherein 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] Nozzle (100) according to claim 1, wherein the longitudinal section of the first bending section (17) is coplanar with the longitudinal section of the second bending section (18); or the longitudinal section of the first bending section (17) is not coplanar with the longitudinal section of the second bending section (18). [10] Nozzle (100) according to claim 1, wherein the flow channel (13) comprises a first flow channel (131) and a second flow channel (133) which are connected to each other, wherein the main flow section (16) and the first bending section (17) are provided with the first flow channel (131), the second bending section (18) is provided with the second flow channel (133), and the flow area of ​​the first flow channel (131) is larger than the flow area of ​​the second flow channel (133). [11] Nozzle (100) according to claim 1, wherein the nozzle (100) further comprises a spray head (30) connected to the spray pipe (10); wherein the spray pipe (10) and the spray head (30) are formed in one piece; or the spray pipe (10) and the spray head (30) are designed to be split and are detachably connected to one another; or the spray pipe (10) and the spray head (30) are split and are permanently connected to one another. [12] Nozzle (100) according to claim 11, wherein the inner wall (37) of the spray tube (10) is provided with a groove (371), the outer wall (19) of the spray tube (10) is provided with a limiting projection (191) and the spray head (30) and the spray tube (10) are connected to one another by the interaction of the limiting projection (191) with the groove (371). [13] Nozzle (100) according to claim 12, wherein the spray head (30) is made of soft rubber. [14] Nozzle (100) according to claim 12, wherein the spray head (30) comprises a channel (31) penetrating two opposite ends, the channel (31) being in communication with the flow channel (13), an end of the channel (31) facing the flow channel (13) having a liquid inlet (33), an end facing away from the flow channel (13) having a liquid outlet (35), and the peripheral wall (351) of the liquid outlet (35) being provided with a notch (3511). [15] Nozzle (100) according to claim 12, wherein the spray head (30) comprises a channel (31) penetrating through two opposite ends, the channel (31) is in communication with the flow channel (13), one end of the channel (31) near the flow channel (13) has a liquid inlet (33), an end remote from the flow channel (13) has a liquid outlet (35) and the width of the outer contour of the longitudinal section of the spray head (30) first gradually increases and then gradually decreases. [16] Nozzle (100) according to claim 11, wherein the outer wall (19) of the spray tube (10) is connected to the inner wall (37) of the spray head (30) by threaded fitting and an end of the spray head (30) facing away from the spray tube (10) is provided with bristles (39). [17] Oral irrigator (1000), comprising: a nozzle (100) comprising a spray tube (10) provided with an inlet (11), an outlet (12), and a flow channel (13) connecting the inlet (11) and the outlet (12), wherein the spray tube (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 to one another in sequence in the direction from the inlet (11) to the outlet (12), wherein the first bend section (17) is located between the first bend (13) and the second bend (14), and the second bend section (18) is located between the second bend (14) and the outlet (12),wherein the extension direction of the first bending section (17) differs from the extension direction of the main flow section (16) and the extension direction of the first bending section (17) differs from the extension direction of the second bending section (18), wherein 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) extends in a curved manner from the main flow section (16) to the second side (163) of the first central axis (C), and wherein the first side (161) of the first central axis (C) faces away from the second side (163) of the first central axis (C); a device body (300) to which the nozzle (100) is connected. [18] Oral irrigator (1000) according to claim 17, wherein the first bending section (17) comprises a first connecting opening (171) connected to the main flow section (16) and a second connecting opening (173) connected to the second bending section (18); wherein the center of the first connecting opening (171) and the center of the second connecting opening (173) have a first connecting center line, and wherein the value range of the angle (α1) between the first central axis (C) and the first connecting center line is [150°, 175°]; and / or wherein the first bending section (17) comprises a first connecting opening (171) connected to the main flow section (16), and a second connecting opening (173) connected to the second bending section (18), wherein the center of the first connecting opening (171) and the center of the second connecting opening (173) have a first connecting center line; wherein the second bending section (18) comprises a second connecting opening (173) connected to the first bending section (17) and the outlet (12), wherein the center of the second connecting opening (173) and the center of the outlet (12) have a second connecting center line, and wherein the value range of the angle (α2) between the first connecting center line and the second connecting center line is [150°, 175°]. [19] Oral irrigator (1000) according to claim 17, wherein the spray tube (10) further comprises a spray head (30) connected to the spray tube (10), the spray head (30) having a channel (31) penetrating two opposite ends, the channel (31) communicating with the flow channel (13), an end of the channel (31) facing the flow channel (13) having a liquid inlet (33) and an end facing away from the flow channel (13) having a liquid outlet (35); wherein the first bending section (17) comprises a first connecting opening (171) connected to the main flow section (16) and a second connecting opening (173) connected to the second bending section (18), and the second bending section (18) comprises a second connecting opening (173) connected to the first bending section (17) and an outlet (12);wherein the main flow section (16) comprises a first subsection (165) and a second subsection (167), wherein the first subsection (165) serves for connection to a device body (300) of the oral irrigator (1000) and the second subsection (167) is connected to the first subsection (165) and the first bending section (17), wherein the length (L1) of the second subsection (167), the distance (L2) between the first connection opening (171) and the second connection opening (173) and the distance (L3) between the second connection opening (173) and the liquid outlet (35) satisfy L1>L2>L3.; [20] Oral irrigator (1000) according to claim 17, wherein the first bending section (17) and the main flow section (16) on both sides of the first bend (14) are connected to each other via a smooth curve, thus forming a first curve, while the first bending section (17) and the second bending section (18) on both sides of the second bend (15) are connected to each other via a smooth curve, thus forming a second curve, wherein 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].

Images