CN217448080U - Nozzle mechanism convenient to replace nozzle piece and tooth flushing device - Google Patents

Abstract

The embodiment of the application discloses shower nozzle mechanism and towards tooth ware convenient to change shower nozzle spare, shower nozzle mechanism are applied to towards tooth ware, and towards tooth ware includes the organism, and the jack has been seted up to organism one end, is provided with pipeline mechanism in the organism, and jack and pipeline mechanism intercommunication, shower nozzle mechanism include: the nozzle piece is used for communicating with the pipeline mechanism through the jack; the moving ring is sleeved on the spray head piece and is connected with the spray head piece in a relatively movable manner, a limiting piece is arranged between the moving ring and the spray head piece and is used for limiting the moving ring and the spray head piece to move relatively; the first suction piece is arranged on the moving ring; the second adsorbs the piece, and the second adsorbs the piece and is used for setting up in the lateral part of jack, and be used for adsorbing with first absorption accessory. Through the embodiment of this application, can be because operating personnel field of vision is fuzzy and lead to being difficult to the condition of aiming at the jack with shower nozzle spare, automatic be located shower nozzle spare and aim at jack department, improve the convenience that shower nozzle spare was changed.

Description

Nozzle mechanism convenient to change nozzle spare and towards tooth ware

Technical Field

The application relates to the technical field of tooth flushing devices, in particular to a spray head mechanism convenient for replacing a spray head piece and a tooth flushing device.

Background

The tooth flusher is an auxiliary device for cleaning the oral cavity. The tooth irrigator can be used for cleaning teeth and slits by using a pulse water flow impact mode. The nozzle piece of the tooth flushing device can be replaced according to different cleaning requirements or different users. The tooth flushing device body can be provided with a jack for accommodating one end of the spray head piece, and an operator can move the original spray head piece out of the jack and insert a new spray head piece into the jack to install or replace the spray head.

At present, the diameter of the nozzle piece of the tooth flushing device and the aperture of the jack are small, when the brightness of a scene is dark when an operator uses the tooth flushing device, and when the eyes of the operator have myopia or other reasons causing visual blurring, the operator is difficult to accurately align the nozzle piece to the jack. Therefore, the tooth flusher in the related art has a condition that the nozzle piece is inconvenient to replace.

SUMMERY OF THE UTILITY MODEL

The utility model provides a shower nozzle mechanism and towards tooth ware convenient to change shower nozzle spare can be because operating personnel field of vision is fuzzy and lead to being difficult to aim at the condition of jack with shower nozzle spare, and automatic be located shower nozzle spare and aim at jack department, improve the convenience that shower nozzle spare was changed.

In order to solve the technical problem, the purpose of the present application is achieved by the following technical solutions:

in a first aspect, an embodiment of the present application provides a shower nozzle mechanism convenient to change shower nozzle spare, is applied to towards tooth ware, it includes the organism to wash tooth ware, the jack has been seted up to organism one end, be provided with pipeline mechanism in the organism, the jack with pipeline mechanism communicates, shower nozzle mechanism includes: a nozzle piece for passing through the insertion hole to communicate with the conduit mechanism; the moving ring is sleeved on the nozzle piece, the moving ring is connected with the nozzle piece in a relatively movable manner, a limiting piece is arranged between the moving ring and the nozzle piece, and the limiting piece is used for limiting the moving ring and the nozzle piece to move relatively; a first suction member disposed on the moving ring; and the second adsorption piece is arranged on the side part of the jack and is used for adsorbing the first adsorption piece.

Optionally, a positioning groove is formed in one side of the moving ring, the first suction piece is accommodated in the positioning groove, the second suction piece is used for being convexly arranged on the machine body, and the second suction piece is used for being embedded into the positioning groove when the first suction piece is sucked.

Optionally, one side of the second adsorption piece protruding out of the machine body is an arc surface, and one side of the first adsorption piece facing the second adsorption piece is matched with one side of the second adsorption piece protruding out of the machine body.

Optionally, the nozzle piece includes a connecting portion and a pipe body portion, the connecting portion is used for entering the machine body through the jack and is communicated with the pipeline mechanism, the pipe body portion is communicated with the connecting portion, the pipe body portion is used for extending out of the jack, a locking groove is formed in the connecting portion and is used for being matched and locked with a locking mechanism in the machine body to fix the connecting portion.

Optionally, the limiting member is disposed on the inner wall of the moving ring, and the limiting member is connected to the locking groove in a clamping manner to limit the relative movement between the moving ring and the nozzle member.

Optionally, a first receiving groove is formed in one side of the moving ring facing the machine body, and the first receiving groove is used for receiving the connecting portion.

Optionally, the limiting member is disposed on an inner wall of the first accommodating groove.

Optionally, a first guiding surface is disposed on a side of the connecting portion facing the moving ring, and the first guiding surface guides the limiting member to deform when the moving ring approaches the connecting portion.

Optionally, a friction member is disposed in the moving ring, and the friction member is sleeved on the pipe body portion.

In a second aspect, embodiments of the present application provide a dental irrigator comprising: the pipeline device comprises a machine body, a pipeline mechanism and a control device, wherein the machine body is provided with a jack, and the pipeline mechanism is communicated with the jack; the nozzle mechanism of any one of the above claims, wherein the nozzle mechanism is adapted to be inserted into the insertion hole and is communicated with the pipeline mechanism.

The application provides a shower nozzle mechanism and towards tooth ware convenient to change shower nozzle spare can be because operating personnel field of vision is fuzzy and lead to being difficult to aim at the shower nozzle spare under the condition of jack, and automatic with shower nozzle spare positioning in aim at jack department, improve the convenience that shower nozzle spare was changed.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic structural view of a tooth irrigator according to an embodiment of the present application;

FIG. 2 is a cross-sectional view of a dental irrigator provided by an embodiment of the present application;

FIG. 3 is an exploded view of the tooth irrigator according to the embodiment of the present application;

FIG. 4 is a cross-sectional view of a spray head mechanism provided in an embodiment of the present application;

FIG. 5 is an enlarged view of FIG. 4 at V;

the labels in the figures illustrate:

100. a tooth flushing device; 10. a body; 11. a piping mechanism; 12. a connection space; 13. a jack; 14. a locking mechanism; 141. a key section; 142. a locking member; 143. an elastic member; 20. a nozzle member; 21. a connecting portion; 211. locking the groove; 212. a first guide surface; 213. a second guide surface; 22. a body portion; 30. a moving ring; 31. positioning a groove; 32. a first receiving groove; 33. a limiting member; 34. a second receiving groove; 35. a friction member; 40. a first suction attachment; 50. a second adsorption member.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, the present application is described in further detail with reference to the accompanying drawings and the detailed description.

In the description of the present application, it is to be understood that the terms "intermediate," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular orientation, and thus should not be construed as limiting the present application. The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In addition, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are intended to be inclusive and mean, for example, that there may be a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Example (b): referring to fig. 1 and 2, fig. 1 and 2 are schematic views of a dental irrigator 100 according to an embodiment of the present disclosure.

In one embodiment, the dental irrigator 100 may include a body 10. The machine body 10 is provided with a pipeline mechanism 11. The conduit means 11 is used to convey a flow of water for rinsing teeth cleaning. A connecting space 12 is arranged in the machine body 10, and one end of the pipeline mechanism 11 extends out of the connecting space 12 and is communicated with the connecting space 12. One end of the machine body 10 is provided with a jack 13, and the jack 13 is communicated with the connecting space 12.

It will be appreciated that the receptacle 13 communicates with the conduit means 11 by communicating with the connection space 12.

Referring to fig. 2, 3 and 4, in the present embodiment, the tooth-rinsing device 100 may further include a nozzle mechanism for conveniently replacing the nozzle member 20. The spray head mechanism may include a spray head member 20, a moving ring 30, a first suction member 40, and a second suction member 50. The nozzle member 20 is hollow, and both ends of the nozzle member 20 are penetrated. The nozzle member 20 may be in communication with the conduit means 11. The nozzle member 20 has one end for entering the connection space 12 through the insertion hole 13 and communicating with the piping mechanism 11. The nozzle member 20 is used to spray the water flow transmitted by the pipe mechanism 11 out of one end of the nozzle member 20 to clean the oral cavity. The moving ring 30 is sleeved on the nozzle member 20, and the moving ring 30 is slidably connected with the nozzle member 20. The nozzle member 20 has a sectional area smaller than that of the insertion hole 13, and the moving ring 30 has a sectional area larger than that of the insertion hole 13. The first suction member 40 is provided at a side of the moving ring 30 facing the body 10. The second adsorption part 50 is disposed on the machine body 10, and when the second adsorption ring is located at the side of the insertion hole 13. The second suction member 50 is used for sucking the first suction member 40 to fix the moving ring 30 relative to the machine body 10, so as to position the nozzle member 20 and the machine body 10. When the second suction member 50 sucks the first suction member 40 and fixes the moving ring 30 to the body 10, the nozzle member 20 is positioned to be aligned with the insertion hole 13.

For example, the insertion hole 13 may be a circular hole, the moving ring 30 may be a circular ring, and the nozzle member 20 may be a nozzle member 20 integrally formed of a plurality of circular tubes. The sectional area of the insertion hole 13 is larger than that of the nozzle member 20 and smaller than that of the moving ring 30, i.e., the diameter of the insertion hole 13 is larger than that of the nozzle member 20 and smaller than that of the moving ring 30.

It will be appreciated that the shift ring 30 cannot pass through the insertion hole 13, and thus when the nozzle member 20 is installed or used, a side of the shift ring 30 facing the machine body 10 maintains a state of facing toward the machine body 10, and a side of the shift ring 30 facing away from the machine body 10 maintains a state of facing away from the machine body 10.

In this embodiment, the inner wall of the moving ring 30 is provided with a limiting member 33. The stopper 33 is adapted to be detachably connected to an end of the head member 20 for communicating with the piping mechanism 11, and restricts movement of the head member 20 when connected to the head member 20.

It can be understood that when the nozzle member 20 is replaced or installed, the operator limits the relative movement between the nozzle member 20 and the moving ring 30 through the limiting member 33, and then moves the nozzle member 20 and the moving ring 30 to a position on the machine body 10 near the insertion hole 13. Then, the first absorbing part 40 absorbs the second absorbing part 50, and under the relative absorption force of the first absorbing part 40 and the second absorbing part 50, the moving ring 30 automatically moves to abut against the machine body 10 and is relatively fixed with the machine body 10, so that the moving ring 30 and the nozzle part 20 are automatically positioned on the machine body 10. The operator then releases the restriction of the head member 20 by the stopper 33 and pushes the head member 20 to move, so that the head member 20 enters the connection space 12 through the insertion hole 13 and communicates with the piping mechanism 11. The operator does not need to align the nozzle member 20 with the insertion hole 13 by naked eyes and then move the nozzle member 20, thereby improving the convenience of replacing the nozzle member 20.

In this embodiment, the first suction member 40 may be a magnet. The second adsorption member 50 may be adsorbed to the first adsorption member 40 in response to the magnetic force of the magnet. The second adsorption member 50 may be made of a ferromagnetic material, which may include, but is not limited to, an iron alloy.

In another embodiment, the first suction members 40 may be provided in plurality at intervals on the circumference of the body 10, and the second suction members 50 may be provided in plurality at intervals on the circumference of the body. The plurality of first adsorption members 40 are spaced apart from each other by a distance equal to the distance between the plurality of second adsorption members 50. And the number of the first adsorption parts 40 is equal to that of the second adsorption parts 50, and the first adsorption parts 40 and the second adsorption parts 50 are arranged in a one-to-one correspondence manner.

It can be understood that the arrangement of the plurality of first suction members 40 and the plurality of second suction members 50 can improve the stability of the relative fixation of the moving ring 30 and the body 10, and at the same time, improve the convenience of positioning the shower head member 20.

In some embodiments, the second absorbing member 50 is protruded from a side of the housing 10 where the insertion hole 13 is formed, and a side of the second absorbing member 50 protruded from the housing 10 is a curved surface. The moving ring 30 has a positioning groove 31 on a surface facing the body 10. The first suction attachment 40 is received in the positioning groove 31 and is fixedly mounted on the inner wall of the positioning groove 31. The side of the first absorbing part 40 facing the second absorbing part 50 is a concave arc surface, and the side of the first absorbing part 40 facing the second absorbing part 50 is matched with the side of the second absorbing part 50 protruding out of the machine body 10.

It can be understood that the number of the positioning grooves 31 is equal to the number of the first and second suction members 40 and 50.

It can be understood that when the second suction member 50 sucks the first suction member 40, the second suction member 50 is inserted into the positioning groove 31, so that the positioning stability of the moving ring 30 and the nozzle member 20 on the machine body 10 can be improved. The cambered surface on the first adsorption part 40 is abutted to the cambered surface on the second adsorption part 50, so that the fluency of the first adsorption part 40 entering the positioning groove 31, namely the fluency of the positioning of the moving ring 30 and the nozzle part 20 on the machine body 10, can be improved.

It can be understood that the fixing connection and the fixing and mounting manner may be screw fixing, welding fixing, bonding fixing, integral forming fixing, etc., and the embodiment of the present application does not limit this.

In another embodiment, the spray head member 20 may include a connecting portion 21 and a body portion 22. The connecting portion 21 is for entering the connecting space 12 through the insertion hole 13 and communicating with the piping mechanism 11. The body portion 22 communicates with the connection portion 21 and is integrally connected to the connection portion 21. The body portion 22 is used for extending out of the machine body 10 through the insertion hole 13, the moving ring 30 is sleeved on the body portion 22, and the body portion 22 and the moving ring 30 are connected in a sliding mode along the axial direction. A first receiving groove 32 for receiving the connecting portion 21 is opened at one side of the moving ring 30 facing the machine body 10. The limiting member 33 is fixed on the inner wall of the first accommodating groove 32, and the limiting member 33 is an annular protrusion. The connecting portion 21 has a locking groove 211 formed on a peripheral wall thereof, and the limiting member 33 is inserted into the locking groove 211 to limit the relative movement between the nozzle member 20 and the moving ring 30 in the axial direction.

It is understood that the axial directions of the stopper 33, the connecting portion 21, the moving ring 30 and the body portion 22 are the same, and may be the same as the longitudinal direction of the body 10.

It can be understood that the limiting member 33 is annular, and one surface of the limiting member 33 protruding the inner wall of the first receiving groove 32 can be an arc surface. The limiting member 33 has elasticity, when the connecting portion 21 and the moving ring 30 move relatively, the connecting portion 21 can drive the limiting member 33 to deform after abutting against the limiting member 33, and when the connecting portion 21 moves to align the locking groove 211 and the limiting member 33, the limiting member 33 is restored to the original state under the action of the elasticity thereof and is clamped with the locking groove 211, so that the relative movement of the nozzle member 20 and the moving ring 30 is limited.

In this embodiment, when the limiting member 33 is engaged with the lock slot 211, the connecting portion 21 is received in the first receiving slot 32.

It is to be understood that the limiting member 33 is made of a material having elasticity, and the embodiment of the present application does not limit the material for producing the limiting member 33. For example, the limiting member 33 may be a rubber ring, and the limiting member 33 may be fixed to the inner wall of the moving ring 30 by adhesion. For another example, as shown in the drawings, the limiting member 33 and the moving ring 30 may be made of plastic, and the limiting member 33 is integrally connected with the moving ring 30.

In some embodiments, the connecting portion 21 has a first guiding surface 212 formed on a side thereof facing the moving ring 30, and the first guiding surface 212 guides the position-limiting member 33 to deform when the moving ring 30 approaches the connecting portion 21.

It is understood that when the shift ring 30 approaches the connecting portion 21, the first guide surface 212 may abut against the stopper 33. As the moving ring 30 and the connecting portion 21 continue to move relatively, the connecting portion 21 pushes the limiting member 33 to deform, and the first guide surface 212 can guide the limiting member 33 to deform, so as to improve the degree of process of deformation of the limiting member 33.

It is understood that the first guiding surface 212 may be a slope or a cambered surface, which is not limited by the embodiment of the present application.

Referring to fig. 2 and 5, in some embodiments, the inner wall of the movable ring 30 is formed with a second receiving groove 34. The second receiving groove 34 is spaced apart from the first receiving groove 32. The second receiving groove 34 is provided with a friction member 35 therein. The friction member 35 is annular, and the friction member 35 is sleeved on the tube body 22. The friction member 35 is used to increase the friction force applied to the body 22 when the body 22 and the moving ring 30 move relatively, so that the body 22 can be kept relatively fixed with the moving ring 30 without being pushed by human force.

It is understood that the friction member 35 may be fixed to the inner wall of the second receiving groove 34, or may only abut against the inner wall of the second receiving groove 34, which is not limited in the embodiments of the present application.

It is understood that the friction member 35 may be made of a flexible material with elasticity, and the material may be, but is not limited to, rubber, silicone, etc.

It will be appreciated that the friction member 35 may also have a sealing function to reduce the entrance of external dust and liquid into the connecting space 12 through the gap between the inner wall of the moving ring 30 and the body portion 22, thereby improving the service life of the dental irrigator 100.

In some embodiments, a locking mechanism 14 is disposed in the connecting space 12, and the locking mechanism 14 is configured to cooperatively engage with the locking groove 211 to limit the movement of the connecting portion 21, so that the connecting portion 21 maintains communication with the pipeline mechanism 11. The direction of sliding movement of the locking mechanism 14 is staggered with respect to the axial direction of the shift ring 30 and spray head member 20. The locking mechanism 14 may include a key part 141, a locking member 142, and an elastic member 143. The key part 141 is protruded on the outer wall of the body 10 and can move in a direction approaching or departing from the connection space 12. The locking member 142 is fixedly connected to the key portion 141, and the locking member 142 is slidably connected to the sliding groove on the inner wall of the connecting space 12. The elastic member 143 is disposed on a side of the locking member 142 away from the key portion 141, the elastic member 143 is connected between the locking member 142 and the inner wall of the connecting space 12, and the elastic member 143 is fixedly connected with the locking member 142 and the inner wall of the connecting space 12.

It is understood that the operator can press the key portion 141 to move the locking member 142, so that the elastic member 143 is compressed and the locking member 142 is moved out of the locking groove 211, so that the locking member 142 is unlocked from the locking groove 211, i.e. the locking mechanism 14 is unlocked from the nozzle member 20, and the operator can take out the nozzle member 20 from the connecting space 12 and replace another nozzle member 20 for installation.

In this embodiment, the side of the connecting portion 21 away from the shift ring 30 is provided with a second guide surface 213. The second guide surface 213 serves to push the locking member 142 against the elastic force of the elastic member 143 after the connection portion 21 enters the connection space 12. When the connecting portion 21 moves to the locking groove 211 and the locking member 142 are aligned, the locking member 142 is reset under the elastic force of the elastic member 143 and is clamped with the locking groove 211, so that the locking of the locking member 142 and the locking groove 211 is realized.

It can be understood that when the nozzle member 20 is installed, the operator need not press the button portion 141, and only move the nozzle member 20, and make the connecting portion 21 enter the connecting space 12 and the pipe mechanism 11 is butted, so that the locking member 142 enters the locking groove 211, and the locking of the locking member 142 and the locking groove 211 is achieved, that is, the nozzle member 20 is locked by the locking mechanism 14, and the movement of the connecting portion 21 is limited, so that the connecting portion 21 is continuously communicated with the pipe mechanism 11.

For example, the body 10 may be a cylindrical body 10, and the moving directions of the locking member 142 and the key portion 141 may be the same as the radial directions of the body 10, the moving ring 30 and the connecting portion 21.

It will be appreciated that the locking groove 211 may be used for relative fixation with the shift ring 30 and may also be used for locking with the locking member 142 to maintain the connection portion 21 in communication with the pipe mechanism 11.

It can be understood that when the connecting portion 21 is butted against the pipeline mechanism 11, a sealing ring is arranged between the connecting portion 21 and one end of the pipeline mechanism 11 entering the connecting space 12 to prevent water from leaking.

It is understood that the elastic member 143 may be a spring.

The embodiment of the present application provides an implementation principle of the tooth irrigator 100, which includes:

when the head piece 20 is replaced, the operator presses the button part 141 to unlock the head piece 20, which is originally mounted on the machine body 10, from the locking mechanism 14, and then the operator manually removes the moving ring 30 and the head piece 20 from the machine body 10 by overcoming the suction force between the first suction member 40 and the second suction member 50. The operator then releases the housing to release the button section 141.

The operator moves the new nozzle member 20 and the moving ring 30 to the machine body 10, and at this time, the connecting portion 21 is located in the first receiving groove 32, and the limiting member 33 is engaged with the locking groove 211. The operator moves the moving ring 30 to a position close to the machine body 10, the second suction member 50 automatically sucks and fixes the moving ring 30 on the machine body 10 by the suction force of the first suction member 40, and aligns the nozzle member 20 with the insertion hole 13, thereby positioning the nozzle member 20 and the moving ring 30. The operator pushes the nozzle member 20 again to make the connection portion 21 enter the connection space 12 through the insertion hole 13, the second guide surface 213 pushes the locking member 142 to move against the elastic force of the elastic member 143, after the connection portion 21 moves to be abutted with the pipe mechanism 11, the locking groove 211 is aligned with the locking member 142, the locking member 142 reversely moves under the elastic force of the elastic member 143 and is inserted into the locking groove 211, the locking of the nozzle member 20 and the body 10 is realized, and the replacement of the nozzle member 20 is completed.

While the invention has been described with reference to specific embodiments, the scope of the invention is not limited thereto, and those skilled in the art can easily conceive various equivalent modifications or substitutions within the technical scope of the invention. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (10)

1. The utility model provides a shower nozzle mechanism convenient to change shower nozzle spare, is applied to towards tooth ware, it includes the organism to wash tooth ware, the jack has been seted up to organism one end, be provided with pipeline mechanism in the organism, the jack with pipeline mechanism intercommunication, its characterized in that, shower nozzle mechanism includes:

a nozzle piece for passing through the insertion hole to communicate with the conduit mechanism;

the moving ring is sleeved on the nozzle piece, the moving ring is connected with the nozzle piece in a relatively movable manner, a limiting piece is arranged between the moving ring and the nozzle piece, and the limiting piece is used for limiting the moving ring and the nozzle piece to move relatively;

a first suction member disposed on the moving ring;

and the second adsorption piece is arranged on the side part of the jack and is used for adsorbing the first adsorption piece.

2. The nozzle mechanism of claim 1, wherein the movable ring has a positioning groove formed at one side thereof, the first suction member is received in the positioning groove, the second suction member is protruded from the housing, and the second suction member is inserted into the positioning groove when the first suction member is sucked.

3. The nozzle mechanism facilitating the replacement of the nozzle member as claimed in claim 2, wherein the side of the second absorbing member protruding from the housing is formed into a curved surface, and the side of the first absorbing member facing the second absorbing member is adapted to the side of the second absorbing member protruding from the housing.

4. The nozzle mechanism facilitating replacement of a nozzle piece as claimed in claim 1, wherein the nozzle piece includes a connecting portion and a body portion, the connecting portion is used for entering the body through the insertion hole and communicating with the pipeline mechanism, the body portion is communicated with the connecting portion, the body portion is used for extending out of the insertion hole, a locking groove is formed on the connecting portion, and the locking groove is used for being matched and locked with a locking mechanism in the body to fix the connecting portion.

5. The nozzle assembly mechanism of claim 4, wherein the retaining member is disposed on an inner wall of the moving ring, and the retaining member is engaged with the locking groove to retain the moving ring and the nozzle assembly from moving relative to each other.

6. The nozzle assembly mechanism of claim 5, wherein the moving ring has a first receiving groove formed on a side thereof facing the housing, the first receiving groove being adapted to receive the connecting portion.

7. The nozzle assembly mechanism of claim 6, wherein the retaining member is disposed on an inner wall of the first receiving cavity.

8. The nozzle tip mechanism facilitating replacement of the nozzle tip according to claim 4, wherein a side of the connecting portion facing the moving ring is provided with a first guide surface that guides deformation of the retaining member when the moving ring approaches the connecting portion.

9. The spray head mechanism of claim 4 wherein said movable ring has a friction member disposed therein, said friction member being disposed around said body portion.

10. A dental irrigator, comprising:

the pipeline device comprises a machine body, a pipeline mechanism and a control device, wherein the machine body is provided with a jack, and the pipeline mechanism is communicated with the jack;

a spray head mechanism as claimed in any one of claims 1 to 9, adapted to be plugged into the socket and in communication with the conduit mechanism.

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