CN219021641U

CN219021641U - Spray head, spray nozzle and tooth flushing device

Info

Publication number: CN219021641U
Application number: CN202223216942.2U
Authority: CN
Inventors: 刘仕华; 黎卓颖; 梁慧嘉
Original assignee: Guangzhou Stars Pulse Co Ltd
Current assignee: Guangzhou Stars Pulse Co Ltd
Priority date: 2022-11-30
Filing date: 2022-11-30
Publication date: 2023-05-16
Anticipated expiration: 2032-11-30

Abstract

The application discloses shower nozzle, nozzle and tooth flusher. The spray nozzle comprises a spray pipe and a mounting seat, the spray pipe comprises a main pipe and two side pipes, the two side pipes are arranged at two opposite ends of the main pipe along the length direction of the main pipe and extend towards the same side of the main pipe along the width direction of the main pipe; each side pipe is provided with a nozzle communicated with an inner pore canal of the side pipe, the pore canals in the two side pipes are communicated with the pore canal in the main pipe to form a first flow passage, the main pipe comprises a parasitic part which is arranged away from the side pipe, and the parasitic part is provided with a first communication port communicated with the first flow passage; the inside second runner that is equipped with of mount pad, the mount pad is connected with the parasitic part in first communication port department to make second runner and first runner intercommunication, and the hardness of mount pad is greater than the hardness of parasitic part, the spray tube is connected with the mount pad deformably, and the spray tube takes place deformation with the mount pad relatively, and the mount pad remains sealed with parasitic part all the time in first communication port department, prevents that the cleaning solution from overflowing from the junction of mount pad and parasitic part, and improves the flow stability of cleaning solution.

Description

Spray head, spray nozzle and tooth flushing device

Technical Field

The application relates to the technical field of oral care instruments, in particular to a spray head, a spray nozzle and a tooth washing device.

Background

The nozzle of the tooth washing device is provided with a plurality of liquid outlets, and can clean the part to be cleaned of the oral cavity from a plurality of directions. In the related art, the nozzle of the tooth-flushing device comprises a spray rod and a spray head, the spray head is rotatably connected to the spray rod, the spray head is configured into a soft rubber spray head, the soft rubber spray head can deform, the two side walls of the spray head deform when being stressed, the side walls of the spray head can be involved in other parts of the spray head, so that a large gap appears between the spray head and the spray rod, on one hand, water flows out of the gap, on the other hand, water flow pressure drop is caused, and tooth-flushing effect is influenced.

Disclosure of Invention

The embodiment of the application provides a shower nozzle, nozzle and tooth flushing device, can solve the unstable problem of junction connection of spray lance and shower nozzle of nozzle.

In a first aspect, embodiments of the present application provide a spray head for a dental irrigator, the spray head comprising:

the spray pipe comprises a main pipe and two side pipes, wherein the two side pipes are arranged at two opposite ends of the main pipe along the length direction of the main pipe and extend towards the same side of the main pipe along the width direction of the main pipe; each side pipe is provided with a nozzle communicated with an inner pore canal of the side pipe, the pore canals in the two side pipes are communicated with the pore canal in the main pipe to form a first flow passage, the main pipe comprises a parasitic part which is arranged away from the side pipe, and the parasitic part is provided with a first communication port communicated with the first flow passage; a kind of electronic device with high-pressure air-conditioning system

The installation seat is internally provided with a second flow passage, the installation seat is connected with the parasitic part at the first communication port, so that the second flow passage is communicated with the first flow passage, the hardness of the installation seat is larger than that of the parasitic part, the spray pipe is connected with the installation seat in a deformable manner, and when the spray pipe is deformed relative to the installation seat, the installation seat is always kept sealed with the parasitic part at the first communication port.

In some exemplary embodiments, the main pipe includes a main body portion connected to the two side pipes, and the parasitic portion is provided to the main body portion; the mounting seat comprises a spray rod connecting part and a spray pipe connecting part, and one end of the spray pipe connecting part far away from the spray rod connecting part is connected with the parasitic part;

the spray pipe connecting part extends along the length direction of the main pipe and is connected with the main body part; and/or the number of the groups of groups,

the spout coupling portion extends in a thickness direction of the main pipe and is coupled to the main body portion.

In some exemplary embodiments, in the width direction of the main pipe, the projection area of the nozzle connection portion is S1, the projection area of the main pipe is S2, and the ratio of S1 to S2 is 1:4 or more.

In some exemplary embodiments, the nozzle connection has a dimension m1 along the length of the main pipe, the main pipe has a dimension m2, and the ratio of m1 to m2 ranges from 1:2 to 1:1.4;

the size of the jet pipe connecting part is n1 along the thickness direction of the main pipe, the size of the main pipe is n2, and the ratio of n1 to n2 is more than or equal to 1:2 and less than or equal to 1:1.4;

the ratio of m1 to n1 ranges from 1:1 to less than 2:1.

In some exemplary embodiments, the main pipe includes a main body portion connected to the two side pipes, and the parasitic portion is provided to the main body portion; the mounting seat comprises a spray pipe connecting part connected with the parasitic part, the spray pipe connecting part comprises a first supporting part, the first supporting part is connected with the outer surface of the parasitic part and the main body part, and the hardness of the first supporting part is larger than that of the parasitic part.

In some exemplary embodiments, the mounting base further includes a second supporting portion, the second supporting portion is disposed on the first supporting portion, the second supporting portion extends into the first communication port to be connected with the parasitic portion, the second flow path extends to a surface of the second supporting portion facing the first flow path, and hardness of the second supporting portion is greater than that of the parasitic portion.

In some exemplary embodiments, a portion of the flow area of the second flow passage adjacent to the first flow passage increases gradually in the direction of extension of the second flow passage.

In some exemplary embodiments, the second support portion participates in a smooth transition of an inner wall surface defining the second flow passage with an inner wall surface defining the first flow passage that the main tube participates in.

In some exemplary embodiments, in a planar projection perpendicular to the width direction of the main pipe, along the length direction of the main pipe, the parasitic portion is configured to define a distance a from a wall surface of the first communication port to an outer side wall of the main pipe, a distance b from a center of the first communication port to the outer side wall of the main pipe, and a ratio of a to b ranges from 1:3 or more to 2:3 or less.

In some exemplary embodiments, the main pipe includes a main body portion connected to the two side pipes, a mounting groove is formed on an outer surface of the main body portion facing away from the side pipes, a parasitic portion is formed on a groove bottom wall of the mounting groove, and the mounting seat extends into the mounting groove to be connected to the parasitic portion and to be connected to a wall surface of the main body portion defining the mounting groove.

In some exemplary embodiments, an outer sidewall of the parasitic element is formed with a first groove or step groove around the first communication port.

In some exemplary embodiments, the slot side wall of the mounting slot includes a first connection surface adjacent to the slot opening of the mounting slot, the distance from the first connection surface to the parasitic portion gradually increasing along the slot bottom wall of the mounting slot toward the slot opening, and the mounting seat is connected to the first connection surface.

In some exemplary embodiments, the parasitic element is entirely contained within the mounting slot; or alternatively, the first and second heat exchangers may be,

the parasitic portion protrudes from an outer surface of the main body portion in a width direction of the main pipe.

In some exemplary embodiments, the parasitic part has a thickness in a range of 1mm or more and 2.5mm or less in a width direction of the main pipe; and/or the number of the groups of groups,

the outer surface of the joint of the main pipe and the mounting seat is in smooth transition; and/or the number of the groups of groups,

the mounting seat comprises a spray rod connecting part and a spray pipe connecting part, wherein one end, far away from the spray rod connecting part, of the spray pipe connecting part is connected with the parasitic part, the spray rod connecting part and the spray pipe connecting part are arranged at an included angle or coaxially, and the spray rod connecting part is used for being connected with a spray rod of a nozzle.

In a second aspect, the present application provides a nozzle comprising a spray bar and a spray head as described above; the spray rod is internally provided with a third flow passage, the spray head is arranged on the spray rod, and the third flow passage is communicated with the second flow passage.

In some exemplary embodiments, the spray bar includes a main bar body and a bar body connected to the main bar body, an end of the bar body remote from the main bar body is connected to the spray bar connection portion, and the bar body is coaxially disposed with the spray bar connection portion;

the support rod body and the main rod body are arranged at an obtuse angle or a right angle; or alternatively, the first and second heat exchangers may be,

the support rod body and the main rod body are coaxially arranged.

In some exemplary embodiments, the spray head is removably coupled to the spray bar.

In a third aspect, the present application provides a dental irrigator comprising a nozzle as described above.

Based on shower nozzle, nozzle and tooth flusher of this application embodiment, set up the hardness of mount pad and be greater than the hardness of parasitic portion, and set up the mount pad and be connected with parasitic portion in first communication port department, provide the support for parasitic portion through the mount pad, maintain the good sealing state of mount pad and parasitic portion junction. And the mounting seat provides support for the parasitic part, and can effectively maintain the stable flow area of the first communication port when the spray pipe deforms relative to the mounting seat, so that the fluid flow state of the first communication port is stable. The parasitic part is located and is responsible for the region that deviates from the side pipe, makes the mount pad be connected with the parasitic part in the one side that is responsible for deviating from the side pipe to the direction that designs first runner and second runner butt joint makes both smooth and easy intercommunication, prevents that the intercommunication department of first runner and second runner from being the contained angle and influences the flow stability of cleaning solution, and is convenient for the side pipe to stretch to the vicinity of treating clean position more conveniently, improves cleaning efficiency.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic perspective view of a spray head according to an embodiment of the present disclosure;

FIG. 2 is a schematic diagram of an exploded structure of a sprinkler head according to one embodiment of the present application;

FIG. 3 is a schematic perspective view of a spray head according to an embodiment of the present disclosure;

FIG. 4 is a schematic cross-sectional view of a spray head according to one embodiment of the present application;

FIG. 5 is a side view of a mount according to one embodiment of the present application mounted to a spout;

fig. 6 is a schematic perspective view of a second supporting portion of an embodiment of the present application disposed on the first supporting portion;

FIG. 7 is a schematic cross-sectional view of a nozzle of an embodiment of the present application;

FIG. 8 is a schematic perspective view illustrating an angle formed between a nozzle connecting portion and a nozzle connecting portion according to an embodiment of the present disclosure;

FIG. 9 is a schematic view of an exploded construction of a nozzle according to one embodiment of the present application;

fig. 10 is a schematic perspective view of a nozzle according to an embodiment of the present application.

Reference numerals:

10. a spray head;

100. a spray pipe; 110. a main pipe; 111. a main body portion; 112. a parasitic part; 120. a side pipe;

100a, a first flow channel; 100b, a nozzle; 100c, a first communication port; 111a, mounting grooves; 112a, step grooves; 1111. a first connection surface;

200. a mounting base; 210. a nozzle connecting part; 211. a first support portion; 212. a second supporting part; 210a, a first bore section; 220. a spray rod connecting part; 220a, a second bore section; 200a, a second runner;

A. a length direction; B. a width direction; C. a thickness direction;

30. a nozzle; 300. a spray bar; 310. a main rod body; 320. a support rod body; 300a, third flow path.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.

As shown in fig. 1 and 2, for the spray head 10 according to an embodiment of the present application, the spray head 10 includes a nozzle 100 and a mounting base 200, and the nozzle 100 is mounted on the mounting base 200. The mounting base 200 is used for being mounted on a spray rod of a nozzle, and the spray rod is used for being mounted on a main body of the tooth cleaning device, as shown in fig. 3, which is a schematic perspective view of a spray rod 300 of the nozzle 30, in which the mounting base 200 is mounted in an embodiment of the present application.

The nozzle 100 includes a main pipe 110 and two side pipes 120, wherein the two side pipes 120 are disposed at opposite ends of the main pipe 110 along a length direction a of the main pipe 110, and extend toward the same side of the main pipe 110 along a width direction B of the main pipe 110. As shown in fig. 4, each side pipe 120 has a spout 100b communicating with its internal orifice, and the orifices inside the two side pipes 120 communicate with the orifice inside the main pipe 110 to form a first flow passage 100a, the main pipe 110 includes a parasitic portion 112 provided away from the side pipe 120, the parasitic portion 112 having a first communication port 100c communicating with the first flow passage 100a. In use, the two side pipes 120 are moved to the vicinity of the site to be cleaned of the oral cavity, the nozzle 100b is directed toward the site to be cleaned, and the cleaning liquid enters the first flow passage 100a from the first communication port 100c and is ejected from the nozzle 100b to act on the site to be cleaned.

The mounting base 200 is provided with a second flow channel 200a inside, and the mounting base 200 is connected to the parasitic part 112 at the first communication port 100c so that the second flow channel 200a communicates with the first flow channel 100a. As shown in fig. 4, when the mount 200 is mounted to the stem 300 of the nozzle 30, the stem 300 may be provided to partially extend into the second flow path 200a, and the cleaning liquid supplied from the stem 300 is discharged from the nozzle 100b after entering the first flow path 100a through the second flow path 200 a.

Wherein, the hardness of mount 200 is greater than the hardness of parasitic element 112, and nozzle 100 is deformably connected with mount 200, and mount 200 can provide support for parasitic element 112, and when nozzle 100 takes place deformation relative to mount 200, the part that parasitic element 112 and mount 200 are connected remains sealed throughout, and wherein, parasitic element 112 and mount 200 are connected the part and can also be finalized the design by mount 200, reduces because nozzle 100 takes place deformation and leads to the unstable condition of fluid flow state in first communication port 100c to take place.

Alternatively, the main pipe 110 and the two side pipes 120 are made of the same material, and the main pipe 110 and the two side pipes 120 are integrally injection molded. For example, the main pipe 110 and the two side pipes 120 are made of a material such as silicone rubber or rubber. The pipe wall surface inside each side pipe 120 is smoothly connected with the pipe wall surface inside the main pipe 110 to form the first flow passage 100a.

The main pipe 110 includes a main body 111, one side pipe 120 is provided at one end of the main body 111 and the other side pipe 120 is provided at the other end of the main body 111 along a longitudinal direction a of the main pipe 110, and the two side pipes 120 extend from the main body 111 to a side away from the parasitic portion 112. The wall thickness of the main body 111 is greater than that of the side pipe 120, so that when the side pipe 120 deforms under external force to pull the main body 111, the main body 111 has appropriate structural strength to resist the pulling force, so as to maintain the form stability of the main pipe 110.

As shown in fig. 4, the parasitic part 112 is disposed in a region of the main body 111 facing away from the side pipe 120, and the mounting seat 200 is connected to the parasitic part 112 on a side of the main pipe 110 facing away from the side pipe 120, so that the first flow channel 100a and the second flow channel 200a are smoothly communicated, preventing the communication position of the first flow channel 100a and the second flow channel 200a from forming an included angle to influence the flowing state of the cleaning liquid, and improving the flowing stability of the cleaning liquid.

The mounting base 200 includes a stem connection part 220 and a nozzle connection part 210, one end of the stem connection part 220 is used for connecting the stem 300 of the nozzle 30, the other end is connected to the nozzle connection part 210, and one end of the nozzle connection part 210 away from the stem connection part 220 is connected to the parasitic part 112. Optionally, an adhesive layer is provided between the parasitic element 112 and the nozzle connection 210, and the parasitic element 112 is adhered to the nozzle connection 210.

As shown in fig. 4, a first hole section 210a is provided in the nozzle connecting portion 210, a second hole section 220a is provided in the nozzle connecting portion 220, the first hole section 210a and the second hole section 220a are communicated to form a second flow passage 200a, the first hole section 210a is communicated with the first flow passage 100a, when the nozzle 10 is mounted on the nozzle 300, the nozzle 300 can extend into the second hole section 220a of the nozzle connecting portion 220 and be connected with the nozzle connecting portion 210 and the nozzle connecting portion 220, a third flow passage 330a in the nozzle 300 is communicated with the first hole section 210a, and cleaning liquid in the third flow passage 330a of the nozzle 300 enters the first flow passage 100a through the first hole section 210 a.

It can be understood that the larger the contact area between the mounting base 200 and the main pipe 110 is, the better the connection stability between the mounting base 200 and the main pipe 110 is, and the better the sealing stability between the mounting base 200 and the parasitic portion 112 is when the nozzle 100 is deformed. Alternatively, the nozzle connecting portion 210 is connected to the main body portion 111 while the nozzle connecting portion 210 is connected to the parasitic portion 112, so that the connection stability between the mount 200 and the main pipe 110 can be effectively improved.

Alternatively, the nozzle connection part 210 extends in at least one of the length direction a of the main pipe 110 and the thickness direction C of the main pipe 110 and is connected with the main body part 111 to increase the area of contact of the nozzle connection part 210 with the main pipe 110. For example, the nozzle connection portion 210 extends along the length direction a of the main pipe 110 and the thickness direction C of the main pipe 110, and is connected to the main body portion 111, so that a part of the structure of the nozzle connection portion 210 is surrounded on the outer periphery of the parasitic portion 112 and is connected to the main body portion 111, and the nozzle connection portion 210 can provide support for the parasitic portion 112 and the nozzle connection portion 210 can provide support for the main body portion 111, so that the sealing stability of the connection between the nozzle connection portion 210 and the parasitic portion 112 is improved when the nozzle 100 is deformed.

In the width direction B of the main pipe 110, the projection area of the nozzle connection portion 210 is S1, the projection area of the main pipe 110 is S2, the ratio of S1 to S2 is 1:4 or more, the main pipe 110 can be stably connected with the nozzle connection portion 210 within the size range, the outer contour dimension of the nozzle connection portion 210 is suitable within the size range, when the nozzle 100 deforms relative to the nozzle connection portion 210, the nozzle connection portion 210 can provide effective support for the nozzle 100, the deformation amount of the parasitic portion 112 is reduced, and the connection stability between the parasitic portion 112 and the nozzle connection portion 210 is effectively improved. Further, the ratio of S1 to S2 is in a range of 1:4 to 1:1, so as to prevent the nozzle connection portion 210 from being oversized, such that the nozzle connection portion 210 is partially protruded and is easy to collide with oral tissues, for example, the ratio of S1 to S2 is 1:3.8, 1:3, 1:2.5, 1:2 or 1:1.2.

As shown in fig. 5, along the length direction a of the main pipe 110, the size of the nozzle connection portion 210 is m1, the size of the main pipe 110 is m2, and the ratio of m1 to m2 is 1:2 or more and 1:1.4 or less, so that the nozzle connection portion 210 can provide effective support for the nozzle 100 in the length direction a of the main pipe 110 when the nozzle 100 is deformed. For example, the ratio of m1 to m2 is 1:1.9, 1:1.8, 1:1.7, 1:1.6, or 1:1.5, etc.

Along the thickness direction C of the main pipe 110, the size of the nozzle connection portion 210 is n1, the size of the main pipe 110 is n2, and the ratio of n1 to n2 is in a range of 1:2 or more and 1:1.4 or less, so that the nozzle connection portion 210 can provide effective support for the nozzle 100 in the thickness direction C of the main pipe 110 when the nozzle 100 is deformed. For example, the ratio of n1 to n2 is 1:1.9, 1:1.8, 1:1.7, 1:1.6, or 1:1.5, etc.

The two side pipes 120 are disposed at opposite ends of the main pipe 110 along the length direction a of the main pipe 110, and m2 is greater than n2, and correspondingly, m1 is greater than n1. In the ratio range of m1 to n1 is greater than or equal to 1:1 and less than 2:1, the nozzle connection portion 210 can provide support for the main pipe 110, so that the main pipe 110 is not easy to skew in the length direction a and the thickness direction C of the main pipe 110. Alternatively, the outer contour of the nozzle connection part 210 may have a circular shape, an oval shape, a racetrack shape, or the like, as shown in fig. 5, and the outer contour of the nozzle connection part 210 may have a racetrack shape.

Referring to fig. 4 and 6, the nozzle connection part 210 includes a first support part 211, the first support part 211 is connected to the nozzle bar connection part 220, and the first support part 211 is connected to an outer surface of the parasitic part 112 and is connected to the main body part 111, and the hardness of the first support part 211 is greater than that of the parasitic part 112. The first supporting portion 211 provides support for the parasitic portion 112 at the outer periphery of the parasitic portion 112, and when the parasitic portion 112 deforms or has a deformation trend, the first supporting portion 211 is stable in shape, so as to improve the shape stability of the parasitic portion 112, further improve the sealing stability of the connection between the first supporting portion 211 and the parasitic portion 112, and improve the flow stability of the cleaning solution at the first communication port 100c.

Optionally, the nozzle connection portion 210 further includes a second supporting portion 212, where the second supporting portion 212 is disposed on the first supporting portion 211, and the second supporting portion 212 extends into the first communication port 100c to be connected with the parasitic portion 112, the second flow channel 200a extends to a surface of the second supporting portion 212 facing the first flow channel 100a, and the hardness of the second supporting portion 212 is greater than that of the parasitic portion 112, so that the second supporting portion 212 extends into the first communication port 100c to provide support for the parasitic portion 112, and in a case that the first supporting portion 211 is connected to the outer surface of the parasitic portion 112, the first supporting portion 211 and the second supporting portion 212 can correspondingly provide support for the parasitic portion 112 no matter whether there is deformation inside or outside the parasitic portion 112, so as to further improve the sealing stability of the parasitic portion 112 and the nozzle connection portion 210, and reduce the deformation of the flow channel where the first flow channel 100a and the second flow channel 200a are communicated due to the deformation of the nozzle 100, thereby effectively improving the flow stability of the cleaning solution where the first flow channel 100a and the second flow channel 200a are communicated.

As shown in fig. 4, in the extending direction of the second flow channel 200a, the flow area of the portion of the second flow channel 200a adjacent to the first flow channel 100a is gradually increased, so that the cleaning liquid in the second flow channel 200a can be smoothly branched into the flow channel of the main pipe 110 in two opposite directions, and the impact of the cleaning liquid in the second flow channel 200a on the wall surface of the main pipe 110 when entering the flow channel of the main pipe 110 is reduced.

The second support 212 is engaged in the smooth transition between the inner wall surface defining the second flow channel 200a and the inner wall surface defining the first flow channel 100a of the main pipe 110, so that the cleaning liquid can smoothly enter the flow channel in the main pipe 110 from the second flow channel 200a, noise is reduced, impact resistance at the joint of the second support 212 and the main pipe 110 is reduced, and unstable connection caused by frequent impact of the cleaning liquid at the joint is prevented.

As shown in fig. 7, in the planar projection perpendicular to the width direction B of the main pipe 110, along the length direction a of the main pipe 110, the parasitic portion 112 is used to define a distance a from the wall surface of the first communication port 100c to the outer side wall of the main pipe 110, the distance B from the center of the first communication port 100c to the outer side wall of the main pipe 110 is in a ratio of a to B in a range of 1:3 or more and 2:3 or less, in which the size of the first communication port 100c and the wall thickness of the nozzle 100 can be easily adjusted within a suitable range for easy assembly, and the wall thickness of the nozzle 100 can have a suitable structural strength so as not to be easily deformed.

Referring to fig. 4 and 7, the outer surface of the main body 111 facing away from the side pipe 120 is provided with a mounting groove 111a, the parasitic portion 112 is formed on the groove bottom wall of the mounting groove 111a, and the mounting seat 200 extends into the mounting groove 111a to be connected to the parasitic portion 112 and to be connected to the wall surface of the main body 111 defining the mounting groove 111 a. Specifically, the first supporting portion 211 extends into the mounting groove 111a to be connected with the parasitic portion 112, so that the size occupied by both the main pipe 110 and the nozzle connecting portion 210 in the width direction B of the main pipe 110 can be reduced under the condition that the first supporting portion 211 provides stable support for the main pipe 110, and the whole structure is compact.

Referring to fig. 4 and 7, the outer sidewall of the parasitic element 112 is formed with a first groove or step groove 112a around the first communication port 100c, and the first supporting element 211 is connected to the wall surface of the parasitic element 112 defining the first groove or step groove 112a, so as to increase the connection area of the parasitic element 112 and the first supporting element 211. For example, the first supporting portion 211 fills the first groove or the step groove 112a, further improving the connection stability between the first supporting portion 211 and the parasitic portion 112, and increasing the sealing property. When the main body 111 has the mounting groove 111a, the first supporting portion 211 may be provided to extend into the mounting groove 111a to be connected with the main body 111, and the first supporting portion 211 is connected with a wall surface of the parasitic portion 112 defining the first groove or step groove 112 a.

The groove side wall of the mounting groove 111a includes a first connection surface 1111 adjacent to the groove opening of the mounting groove 111a, and the distance from the first connection surface 1111 to the parasitic portion 112 gradually increases along the groove bottom wall of the mounting groove 111a toward the groove opening, and the mounting seat 200 is connected to the first connection surface 1111. At least part of the side walls of the grooves provided with the mounting grooves 111a are inclined surfaces, so that the connection part of the nozzle 30 is conveniently positioned and connected with the main pipe 110, the connection area of the connection part of the nozzle 30 and the main pipe 110 is increased, and the connection stability of the connection part of the nozzle 30 and the main pipe 110 is further improved.

Alternatively, as shown in fig. 7, the parasitic element 112 is entirely accommodated in the installation groove 111 a; alternatively, in the width direction B of the main pipe 110, the parasitic part 112 partially protrudes from the outer surface of the main body 111 so that the parasitic part 112 and the nozzle connection part 210 are fitted into each other, thereby improving the structural strength of the connection between the parasitic part 112 and the nozzle connection part 210.

In the width direction B of the main pipe 110, the thickness h of the parasitic part 112 is in a range of 1mm or more and 2.5mm or less, and after the parasitic part 112 is connected to the first supporting part 211, the parasitic part 112 has a sufficient thickness to be connected to the spout connecting part 210 so as to maintain the sealing property of the connection of the parasitic part 112 to the spout connecting part 210.

The outer surface of the junction between the main tube 110 and the mounting seat 200 is smoothly transited, specifically, the outer surface of the main tube 110 is smoothly transited to the outer surface of the first supporting portion 211, so that when the nozzle 10 is applied to the oral cavity of the tooth irrigator, the contact between the oral cavity and the nozzle 10 can obtain more comfortable touch feeling.

As shown in fig. 6, the stem connection 220 is disposed coaxially with the nozzle connection 210. Alternatively, as shown in fig. 8, the stem connection 220 is disposed at an angle to the nozzle connection 210, e.g., the stem connection 220 is disposed perpendicular to the nozzle connection 210. In use of the spray head 10, the spray head 10 can be selected according to the needs of the user so as to move the spray head 10 to orient the nozzle 100b in a suitable position toward the oral cavity to be cleaned.

The embodiment of the present application also provides a nozzle 30, and in combination with fig. 3 and 9, the nozzle 30 includes a spray bar 300 and the spray head 10 as described above. The spray rod 300 has a third flow path 300a therein, the spray head 10 is provided to the spray rod 300, and the third flow path 300a communicates with the second flow path 200a, and the cleaning liquid of the third flow path 300a enters the second flow path 200a and is sprayed from the spray nozzle 100b after passing through the first flow path 100a.

The spray rod 300 includes a main rod body 310 and a support rod body 320 connected to the main rod body 310, wherein one end of the support rod body 320 away from the main rod body 310 is connected to the spray rod connecting portion 220, and the support rod body 320 is coaxially disposed with the spray rod connecting portion 220, so that the spray head 10 is assembled to the spray rod 300. Alternatively, as shown in fig. 9, the supporter 320 is disposed at an obtuse angle or a right angle to the main rod body 310, or, as shown in fig. 10, the supporter 320 is disposed coaxially with the main rod body 310, so that the nozzle 100b of the spray head 10 is oriented toward the oral cavity of the user to be cleaned by adjusting the direction of the spray rod 300.

Alternatively, the spray head 10 is detachably connected to the spray bar 300 so that the spray head 10 can be replaced to mount the spray head 10 of a specification desired by a user to the spray bar 300 and to facilitate the removal of the spray head 10 for cleaning as required.

Embodiments of the present application also provide a dental irrigator including a nozzle 30 as described above. The dental caries device further comprises a main body including a housing and a liquid storage tank provided in the housing, the spray bar 300 of the nozzle 30 is mounted in the housing, and the third flow channel 300a in the spray bar 300 is communicated with the liquid storage tank, so that cleaning liquid of the liquid storage tank can be sprayed from the spray nozzle 100b through the third flow channel 300a, the second flow channel 200a and the first flow channel 100a in sequence.

The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present application, it should be understood that, if there is an azimuth or positional relationship indicated by terms such as "upper", "lower", "left", "right", etc., based on the azimuth or positional relationship shown in the drawings, this is for convenience of description and simplification of the description, but does not indicate or imply that the apparatus or element to be referred must have a specific azimuth, be constructed and operated in a specific azimuth, and thus terms describing the positional relationship in the drawings are merely used for illustration and are not to be construed as limitations of the present patent, and that the specific meaning of the terms described above may be understood by those of ordinary skill in the art according to the specific circumstances.

The foregoing description of the preferred embodiments of the present application is not intended to be limiting, but is intended to cover any and all modifications, equivalents, and alternatives falling within the spirit and principles of the present application.

Claims

1. A spray head for a dental appliance, the spray head comprising:

2. The spray head according to claim 1, wherein the main pipe includes a main body portion connected to the two side pipes, the parasitic portion being provided to the main body portion; the mounting seat comprises a spray rod connecting part and a spray pipe connecting part, and one end of the spray pipe connecting part far away from the spray rod connecting part is connected with the parasitic part;

3. The head according to claim 2, wherein the projection area of the nozzle connecting portion is S1 in the width direction of the main pipe, the projection area of the main pipe is S2, and the ratio of S1 to S2 is 1:4 or more.

4. A spray head according to claim 2 or 3, characterized in that,

along the length direction of the main pipe, the size of the jet pipe connecting part is m1, the size of the main pipe is m2, and the ratio of m1 to m2 is more than or equal to 1:2 and less than or equal to 1:1.4;

the ratio of m1 to n1 ranges from 1:1 to less than 2:1.

5. The spray head according to claim 1, wherein the main pipe includes a main body portion connected to the two side pipes, the parasitic portion being provided to the main body portion; the mounting seat comprises a spray pipe connecting part connected with the parasitic part, the spray pipe connecting part comprises a first supporting part, the first supporting part is connected with the outer surface of the parasitic part and the main body part, and the hardness of the first supporting part is larger than that of the parasitic part.

6. The spray head of claim 5, wherein the mounting base further comprises a second supporting portion, the second supporting portion is disposed on the first supporting portion, the second supporting portion extends into the first communication port to be connected with the parasitic portion, the second flow passage extends to a surface of the second supporting portion facing the first flow passage, and the hardness of the second supporting portion is greater than that of the parasitic portion.

7. The spray head of claim 6 wherein a portion of the second flow passage adjacent the first flow passage increases in flow area in the direction of extension of the second flow passage.

8. The spray head of claim 7 wherein the second support portion participates in a smooth transition of an inner wall surface defining the second flow passage with the main tube participating in an inner wall surface defining the first flow passage.

9. The head according to claim 1, wherein in a planar projection perpendicular to a width direction of the main pipe, a distance from a wall surface of the parasitic portion defining the first communication port to an outer side wall of the main pipe is a, a distance from a center of the first communication port to the outer side wall of the main pipe is b, and a ratio of a to b is in a range of 1:3 or more and 2:3 or less along a length direction of the main pipe.

10. The spray head according to claim 1, wherein the main pipe comprises a main body part connected with the two side pipes, a mounting groove is formed on the outer surface of the main body part, which is away from the side pipes, the parasitic part is formed on the bottom wall of the mounting groove, and the mounting seat extends into the mounting groove to be connected with the parasitic part and is connected with the wall surface of the main body part, which limits the mounting groove.

11. The spray head of claim 10, wherein an outer sidewall of the parasitic element is formed with a first groove or step groove around the first communication port.

12. The spray head of claim 10 wherein the slot side wall of the mounting slot includes a first connection surface adjacent the slot opening of the mounting slot, the first connection surface being progressively greater in distance from the parasitic portion in a direction of the slot bottom wall of the mounting slot toward the slot opening, the mounting seat being connected to the first connection surface.

13. The spray head according to claim 10, wherein,

the parasitic parts are all accommodated in the mounting groove; or alternatively, the first and second heat exchangers may be,

14. The spray head according to claim 1, wherein,

the thickness range of the parasitic part is more than or equal to 1mm and less than or equal to 2.5mm in the width direction of the main pipe; and/or the number of the groups of groups,

15. A nozzle, comprising:

a spray head according to any one of claims 1 to 14; a kind of electronic device with high-pressure air-conditioning system

The spray rod is internally provided with a third flow passage, the spray head is arranged on the spray rod, and the third flow passage is communicated with the second flow passage.

16. The nozzle of claim 15, wherein the spray bar comprises a main bar body and a bar body connected to the main bar body, an end of the bar body remote from the main bar body is connected to the spray bar connection portion, and the bar body is coaxially disposed with the spray bar connection portion;

the support rod body and the main rod body are coaxially arranged.

17. The nozzle of claim 15 wherein said spray head is removably connected to said spray bar.

18. A dental irrigator, comprising:

a nozzle as claimed in any one of claims 15 to 17.