Multifunctional rotary nozzle structure for oral cavity cleaning

Abstract

The invention relates to a multifunctional rotary nozzle structure for oral cavity cleaning, and relates to the technical field of oral cavity cleaning. Comprising a conveying pipe, a rotating head is rotationally arranged at one end of the conveying pipe, a working cavity is formed in the rotating head, a telescopic pipe connected with the conveying pipe is arranged in the working cavity, and a high-pressure spray head is arranged at the telescopic end of the telescopic pipe. According to the oral cavity cleaning device, the following problems existing in the oral cavity cleaning process in the prior art can be solved: the angle-adjustable supporting plates are symmetrically arranged on the rotating shaft, the tooth gaps are positioned through the supporting plates with sharp corners when the tooth gaps are cleaned, a user is assisted to adjust the position, the user is helped to quickly find the part needing to be cleaned, and the cleaning efficiency is improved. The cleaning efficiency is improved; by arranging the mask, the traditional way of bending over and lowering the head to face the hand washing sink is avoided, the fatigue of shoulder and neck muscles is effectively relieved, and the waist ache caused by long-time bending is also avoided. The comfort and convenience in the using process are greatly improved, and the using willingness of a user is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of oral cleaning, and particularly relates to a rotary nozzle structure for multi-functional oral cleaning. Background Art

[0002] With the continuous improvement of people's living standards, oral health has received increasing attention. As the starting part of the human digestive system, the health of the oral cavity not only directly affects the intake and digestion of food, but also is closely related to overall health. Research shows that poor oral hygiene is likely to cause various problems such as dental caries, periodontitis, and bad breath, and in severe cases, it may even increase the risk of systemic diseases such as cardiovascular diseases and diabetes. Therefore, daily oral cleaning has become a key link in maintaining physical health.

[0003] At present, as the most widely used cleaning tool, the water flosser can deeply clean areas that are difficult to reach by toothbrushes and dental floss by using the method of pulsed water flow impact. However, traditional water flossers have many limitations. On the one hand, when most water flossers clean teeth, they mainly rely on people to manually put the nozzle into the oral cavity, lacking a positioning structure. This results in the fact that during the cleaning process, it is difficult to observe the internal situation of the oral cavity, so that the nozzle cannot accurately locate the gaps between teeth, causing incomplete cleaning. On the other hand, when using water flow to clean the oral cavity, the user needs to lower their head to prevent the water from entering the throat, which leads to poor comfort during use.

[0004] For example, the Chinese patent with the publication number CN213098476U discloses an oral cleaning and care device, including a connecting pipe, a motor protection cavity, a rotary motor, a rotating shaft, a liquid inlet cavity, a nozzle, and a rotary multi-directional cleaning component. The motor protection cavity is arranged as a hollow cavity, the motor protection cavity is connected with a connecting pipe, the rotary motor is arranged in the motor protection cavity, one end of the rotating shaft is arranged at the output end of the rotary motor, the other end of the rotating shaft penetrates through the connecting pipe along the axial direction of the connecting pipe, the other end of the rotating shaft is connected with a liquid inlet cavity, the nozzle is arranged on the side of the liquid inlet cavity away from the rotating shaft, and the rotary multi-directional cleaning component is arranged on the side wall of the liquid inlet cavity. It belongs to the technical field of oral care. Specifically, it is an oral cleaning and care device that can manually clean and massage the inside of the oral cavity, can realize the self-rotation cleaning and massage care of the cleaning component, has good cleaning effect, can perform targeted cleaning and care on the inside of the oral cavity, and will not harm the oral cavity, can spray liquid, and can perform preliminary care and cleaning on the oral cavity to improve the oral care effect.

[0005] However, there are still some deficiencies in the above oral cleaning and care device during actual use: 1. Although the above device can perform targeted cleaning and care on the oral cavity, the targeted care cannot accurately locate the gaps between teeth, resulting in the nozzle being unable to accurately locate the gaps during the cleaning process. During manual cleaning, it is easy to form cleaning blind spots, causing insufficient cleaning.

[0006] 2. When using water flow to clean the oral cavity, the user often needs to keep their head down continuously. During this process, the cervical spine needs to maintain a bent angle for a long time, which not only easily causes stiffness and soreness, but also brings an additional burden to the neck muscles, seriously affecting the comfort experience during use and reducing the user's willingness and frequency to use the oral cavity water cleaning tool. Therefore, under the viewpoints stated above, it is of great significance to improve and perfect the oral cleaning and care device. It can not only locate the gaps between teeth for precise cleaning, but also improve the comfort of the user during the cleaning process and increase the user's willingness to use. Summary of the Invention

[0007] To solve the above problems, the present invention provides a rotating nozzle structure for multi-functional oral cleaning, including a delivery pipe. One end of the delivery pipe is rotatably provided with a rotating head. A working cavity is opened in the rotating head. An expansion pipe connected to the delivery pipe is arranged inside the working cavity, and a high-pressure nozzle is arranged at the expansion end of the expansion pipe.

[0008] Support plates are symmetrically arranged on the rotating head along its length direction. One end of the support plates facing away from each other is arranged at the bottom of the working cavity through telescopic rods, and the other end is rotatably arranged at the bottom of the working cavity through connecting rods.

[0009] A driving member for driving the support plates to rotate is arranged inside the working cavity.

[0010] Preferably, a mask is also slidably arranged on the delivery pipe. Anti-slip strips are installed on the side of the mask, and a water outlet pipe communicating with its interior is arranged at the bottom of the mask.

[0011] Preferably, the driving member includes rotating shafts symmetrically arranged in the working cavity. A circular plate is eccentrically arranged on the rotating shafts, and a connecting groove with a T-shaped cross-section is opened on the side of the circular plate.

[0012] One end of the support plate close to the telescopic rod is hinged with a connecting block that cooperates with the connecting groove.

[0013] Preferably, a control member for driving the rotating head to rotate is arranged on the delivery pipe; the control member includes a connecting plate installed on the delivery pipe. A control gear is rotatably arranged on the connecting plate, and a control gear ring meshing with the control gear is arranged on the outside of the rotating head.

[0014] Preferably, a driving member for controlling the expansion and contraction of the telescopic tube is arranged in the working chamber; the driving member includes a collar sleeved on the telescopic end of the telescopic tube, special-shaped rods symmetrically arranged on the collar, driving racks arranged on the special-shaped rods, and a driving gear meshing with the driving rack arranged on the rotating shaft.

[0015] Preferably, an adjusting member is arranged in the telescopic tube; the adjusting member includes a moving shaft slidably arranged along the axis of the telescopic tube in the telescopic end of the telescopic tube, and a blocking block is arranged at one end of the moving shaft close to the outlet of the telescopic tube.

[0016] A blocking ring is further arranged on the moving shaft, the blocking ring is slidably arranged inside the telescopic tube through a tension spring, and a plurality of water outlet holes are formed in the telescopic end of the blocking ring.

[0017] Preferably, the support plates are telescopic plates, and a plurality of massage balls are rotatably arranged at one end where the two support plates are close to each other. The other end of the support plate is slidably provided with an electric push rod through a telescopic rod, and a plurality of control plates are arranged at the telescopic end of the electric push rod. A plurality of control grooves are formed in the control plates along the width direction thereof.

[0018] The massage balls are in contact with the inside of the control grooves.

[0019] Preferably, one end of the moving shaft far from the outlet of the telescopic tube is provided with a mounting ring through a spring, a resisting rod is installed inside the fixed end of the telescopic tube, and the mounting ring is movably in contact with the resisting rod.

[0020] In summary, the present application includes at least one of the following beneficial technical effects: First, by symmetrically arranging adjustable support plates on the rotating head, when cleaning the interdental space, the support plates forming a sharp angle are used to position the interdental space, assist the user in adjusting the position, help the user quickly find the part to be cleaned, avoid wasting time due to blind operation, reduce repeated attempts during the cleaning process, significantly improve the cleaning efficiency, effectively remove food residues and dental plaque, ensure the cleaning effect, and provide a more reliable guarantee for oral health.

[0021] Second, by arranging the face mask, the edge of which is specially arc-shaped processed, perfectly fits the cheeks, saying goodbye to the traditional cumbersome posture of bending down and lowering the head towards the washbasin and repeatedly operating with hand-held tools, effectively relieving the fatigue of the shoulder and neck muscles, and also avoiding the waist soreness caused by bending down for a long time. Greatly improves the comfort and convenience during use and enhances the user's willingness to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below with reference to the drawings and embodiments.

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0024] Figure 2 It is a schematic structural diagram of the driving structure for the rotating head of the present invention.

[0025] Figure 3 It is a schematic structural diagram of the interior of the rotating head of the present invention.

[0026] Figure 4 It is a schematic structural diagram of the structure for adjusting the angle of the support plate of the present invention.

[0027] Figure 5 It is the present invention Figure 4 The schematic structural diagram at position A in it.

[0028] Figure 6 It is a schematic structural diagram of the driving structure for the telescopic tube of the present invention to expand and contract.

[0029] Figure 7 It is a schematic structural diagram of the interior of the telescopic tube of the present invention.

[0030] Figure 8 It is a schematic structural diagram of the structure for controlling the rotation of the massage ball of the present invention.

[0031] In the figure, 1. conveying pipe; 10. rotating head; 11. working cavity; 12. telescopic tube; 13. support plate; 14. telescopic rod; 15. connecting rod; 20. mask; 21. anti-slip strip; 22. water outlet pipe; 3. driving member; 30. rotating shaft; 31. circular plate; 32. connecting groove; 33. connecting block; 4. control member; 40. connecting plate; 41. control gear; 42. control gear ring; 5. driving member; 50. collar; 51. special-shaped rod; 52. driving rack; 53. driving gear; 6. adjusting member; 60. moving shaft; 61. blocking block; 62. blocking ring; 63. water outlet hole; 70. massage ball; 71. control board; 72. control groove; 73. electric push rod; 80. mounting ring; 81. abutting rod. Detailed implementation manners

[0032] The following Figures 1-8 will be used to explain the embodiments of the present invention in detail.

[0033] The embodiment of the present application discloses a multi-functional rotating nozzle structure for oral cleaning. The present invention is mainly applied in the process of oral cleaning. In terms of technical effects, it can avoid the problem that the gap between teeth cannot be accurately positioned, resulting in the inability of water flow to accurately clean the gap during cleaning, incomplete cleaning, and affecting oral hygiene; further, the present invention can also solve the problem that when the oral cavity is cleaned with water flow, the user needs to bend down or lower the head to prevent the water from getting on the body, resulting in varying degrees of stiffness and soreness, and reducing the user's willingness to use.

[0034] Embodiment 1: Refer to Figure 1 ,Figure 2 and Figure 3 As shown in Figure 3 , a rotary nozzle structure for multi-functional oral cleaning includes a delivery pipe 1. One end of the delivery pipe 1 is rotatably provided with a rotary head 10. A working chamber 11 is opened in the rotary head 10. An expansion pipe 12 connected to the delivery pipe 1 is arranged inside the working chamber 11. The expansion end of the expansion pipe 12 is provided with a high-pressure nozzle (not shown in the figure). The delivery pipe 1 is connected to an external device for delivering water flow. The water flow is sprayed out in a high-pressure form through the high-pressure nozzle to clean the interdental spaces.

[0035] Support plates 13 are symmetrically arranged on the rotary head 10 along its length direction. The opposite ends of the support plates 13 are arranged at the bottom of the working chamber 11 through telescopic rods 14, and the other ends are rotatably arranged at the bottom of the working chamber 11 through connecting rods 15.

[0036] In the initial state, the telescopic rods 14 are in a contracted state. At this time, the two support plates 13 are in an inclined state, forming a triangle. When the rotary head 10 approaches the teeth, the contact positions of the two support plates 13 correspond to the interdental spaces, assisting the user to align the high-pressure nozzle with the interdental spaces. This is because when cleaning the interdental spaces, the user cannot observe the internal situation of the interdental spaces and it is difficult to align the sprayed water flow with the interdental spaces, which will result in incomplete cleaning of the interdental spaces and affect oral health. Through the positioning of the two support plates 13, it is convenient for the user to position and improves the use efficiency.

[0037] A driving member 3 for driving the support plates 13 to rotate is arranged inside the working chamber 11. When cleaning the tongue surface, by driving the support plates 13 to rotate, the support plates 13 are in a horizontal state relative to the rotary head 10, adapting to the shape of the tongue surface and facilitating the cleaning of the tongue surface.

[0038] Referring to Figure 1 As shown in Figure 1 , which is a schematic structural diagram for improving the cleaning comfort; specifically, a face mask 20 is also slidably arranged on the delivery pipe 1. Anti-slip strips 21 are installed on the side of the face mask 20. The anti-slip strips 21 are made of silica gel material to increase the friction with the face and prevent sliding during oral cleaning. A water outlet pipe 22 communicating with the inside of the face mask 20 is arranged at the bottom of the face mask 20.

[0039] The edge of the face mask 20 is specially arc-shaped processed to perfectly fit the cheek and chin parts. When cleaning the inside of the oral cavity, place the face mask 20 on the face, and the rotary head 10 will enter the oral cavity. The waste water generated during the cleaning process will flow into the face mask 20 and flow out through the water outlet pipe 22. During use, just slightly lower the head and spit the waste water remaining in the oral cavity into the face mask 20. There is no need to always keep the head down or bend over, which improves the comfort during oral cleaning, indirectly enables the user to increase the cleaning time, makes the cleaning more comprehensive, and ensures oral hygiene.

[0040] The connection between the face mask 20 and the delivery tube 1 is connected by a flexible material. When cleaning the oral cavity, the movement of the delivery tube 1 in the oral cavity will not be blocked by the face mask 20, and the airtightness of the face mask 20 can be ensured.

[0041] Refer to Figure 3 、 Figure 4 and Figure 5 shown, which is a schematic structural diagram of driving the support plate 13 to rotate; specifically, the driving member 3 includes rotating shafts 30 symmetrically arranged in the working cavity 11. An eccentric circular plate 31 is arranged on the rotating shaft 30, and a connecting groove 32 with a T-shaped cross-section is formed on the side of the circular plate 31.

[0042] One end of the support plate 13 close to the telescopic rod 14 is hinged with a connecting block 33 that cooperates with the connecting groove 32.

[0043] By externally driving to control the rotation of the rotating shaft 30, and then the rotation drives the circular plate 31 to rotate. At this time, the connecting groove 32 on the circular plate 31 will push the connecting block 33 away from the rotating shaft 30. At this time, since the opposite ends of the support plate 13 are arranged on the rotating head 10 through the telescopic rod 14, the opposite ends of the support plate 13 will move downward under the cooperation of the connecting groove 32 and the connecting block 33. The two support plates 13 will rotate along the connection with the connecting rod 15. When the circular plate 31 rotates 180 degrees along the rotating shaft 30, the telescopic rod 14 extends to the maximum distance. At this time, the two support plates 13 are parallel to the rotating head 10, preparing for cleaning the tongue surface.

[0044] Refer to Figure 2 shown, which is a schematic structural diagram of adjusting the cleaning angle; specifically, a control member 4 for driving the rotating head 10 to rotate is arranged on the delivery tube 1; the control member 4 includes a connecting plate 40, the connecting plate 40 is installed on the delivery tube 1, a control gear 41 is rotatably arranged on the connecting plate 40, and a control gear ring 42 meshing with the control gear 41 is arranged on the outside of the rotating head 10. By controlling the rotation of the control gear 41 by a motor (not shown in the figure), when the control gear 41 rotates, the control gear ring 42 rotates, and the control gear ring 42 drives the rotating head 10 to rotate synchronously. The reason for such a setting is that when cleaning the teeth and the tongue surface, the rotating head 10 needs to rotate at different angles to control the direction of the water flow out, so as to facilitate the separate cleaning of the teeth and the tongue surface.

[0045] Refer to Figure 4 and Figure 6 shown, which is a schematic structural diagram of controlling the telescopic movement of the telescopic tube 12; specifically, a driving member 5 for controlling the telescopic movement of the telescopic tube 12 is arranged in the working cavity 11; the driving member 5 includes a collar 50, the collar 50 is sleeved on the telescopic end of the telescopic tube 12, special-shaped rods 51 are symmetrically arranged on the collar 50, a driving rack 52 is arranged on the special-shaped rod 51, and a driving gear 53 meshing with the driving rack 52 is arranged on the rotating shaft 30.

[0046] When one of the rotating shafts 30 rotates, it will drive the driving gear 53 to rotate. At this time, the driving rack 52 engaged with it will rise and fall synchronously. When the driving rack 52 rises and falls, it will control the lifting of the collar 50, and then drive the telescopic tube 12 to expand and contract. During the lifting process of the collar 50, the collar 50 will drive the driving rack 52 on the other special-shaped rod 51 to rise and fall synchronously, and then drive another driving gear 53 engaged with it to rotate. At this time, the two rotating shafts 30 can rotate synchronously.

[0047] The telescopic tube 12 is provided to control the telescopic tube 12 to contract when cleaning the tongue surface, that is, when the support plate 13 is in a parallel state, so that the telescopic tube 12 is away from the support plate 13. During the process of the support plate 13 contacting the tongue surface, the water flow output by the telescopic tube 12 will not directly contact the tongue surface, preventing the high-pressure water flow from damaging the tongue surface.

[0048] Refer to Figure 6 and Figure 7 As shown, it is a schematic structural diagram for adjusting the water outlet position; specifically, an adjusting member 6 is provided inside the telescopic tube 12; the adjusting member 6 includes a moving shaft 60, and the moving shaft 60 is slidably arranged along the axis of the telescopic tube 12 inside the telescopic end of the telescopic tube 12. One end of the moving shaft 60 close to the outlet of the telescopic tube 12 is provided with a blocking block 61.

[0049] A blocking ring 62 is also provided on the moving shaft 60. The blocking ring 62 is slidably arranged inside the telescopic tube 12 through a tension spring. A plurality of water outlet holes 63 are provided at the telescopic end of the blocking ring 62.

[0050] When cleaning the tooth gap, the blocking ring 62 blocks the water outlet holes 63. At this time, the blocking block 61 does not block the outlet of the telescopic tube 12, and the water in the telescopic tube 12 flows out from the outlet to clean the tooth gap. When it is necessary to clean the tongue surface, the moving shaft 60 descends. At this time, the blocking block 61 blocks the outlet of the telescopic tube 12, while the blocking ring 62 does not block the water outlet holes 63. At this time, the water in the telescopic tube 12 will flow out from the water outlet holes 63 more slowly, making the water flow more gentle when cleaning the tongue surface.

[0051] Refer to Figure 7 As shown, it is a schematic structural diagram for controlling the movement of the moving shaft 60; specifically, one end of the moving shaft 60 away from the outlet of the telescopic tube 12 is provided with a mounting ring 80 through a spring. A resisting rod 81 is installed inside the fixed end of the telescopic tube 12, and the mounting ring 80 is movably in contact with the resisting rod 81.

[0052] When the telescopic tube 12 contracts, the moving shaft 60 will move synchronously with the telescopic end of the telescopic rod 14. At the same time, the mounting ring 80 arranged on the moving shaft 60 through a spring will move synchronously and gradually approach the abutting rod 81. When the mounting ring 80 touches the bottom rod, the continuous contraction of the telescopic tube 12 will cause the spring to contract. After the spring is completely compressed, the continuous contraction of the telescopic tube 12 will cause the abutting rod 81 to act on the mounting ring 80 in the reverse direction, causing the moving shaft 60 to move towards the outlet of the telescopic tube 12, prompting the blocking block 61 on the moving shaft 60 to block the outlet.

[0053] When the telescopic rod 14 extends, the blocking ring 62 approaches the water outlet hole 63 under the action of the tension spring, the blocking block 61 cancels the blockage of the outlet, and the water flow flows out from the outlet of the telescopic tube 12 again.

[0054] Refer to Figure 4 and Figure 8 As shown in

[0055] The massage balls 70 are in contact with the inside of the control grooves 72.

[0056] When cleaning the tongue surface, the telescopic end of the electric push rod 73 reciprocates, causing the control board 71 to move reciprocally. At this time, the control grooves 72 on the control board 71 drive the massage balls 70 to rotate reciprocally. The massage balls 70 are made of latex, which increases the friction between the massage balls 70 and the control grooves 72, enabling the reciprocating movement of the control board 71 to drive the massage balls 70 to rotate, and the latex massage balls 70 can improve the cleaning effect on the tongue surface.

[0057] During operation: In the first step, the rotary head 10 is sent into the oral cavity. When cleaning the tooth gaps, the water flow in the conveying tube 1 will flow out from the high-pressure nozzle on the telescopic tube 12 through the telescopic tube 12 to clean the tooth gaps. During this process, the support plate 13 on the rotary head 10 is used to position the tooth gaps to assist the user.

[0058] In the second step: When the tongue surface needs to be cleaned, the control gear 41 is driven to rotate, thereby causing the control gear ring 42 meshing with it to drive the rotary head 10 to rotate, making the support plate 13 on the rotary head 10 align with the tongue surface. During this process, the external drive drives the rotating shaft 30 to rotate, thereby causing the circular plate 31 to rotate. Subsequently, under the joint cooperation of the connecting groove 32 on the circular plate 31 and the connecting block 33 on the support plate 13, the support plate 13 is driven to rotate, making the two support plates 13 located on the same horizontal line.

[0059] Step 3: The telescopic tube 12 contracts, and the moving shaft 60 moves synchronously with the telescopic end of the telescopic rod 14. At the same time, the mounting ring 80 arranged on the moving shaft 60 through a spring will move synchronously and gradually approach the abutting rod 81. When the mounting ring 80 contacts the abutting rod 81, the continuous contraction of the telescopic tube 12 will cause the spring to contract. When the spring is completely compressed, the continuous contraction of the telescopic tube 12 will cause the abutting rod 81 to act on the mounting ring 80 in the reverse direction, causing the moving shaft 60 to move towards the outlet of the telescopic tube 12, prompting the blocking block 61 on the moving shaft 60 to block the outlet. At this time, the water in the telescopic tube 12 flows out through the water outlet hole 63 to clean the tongue surface.

[0060] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive.

[0061] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A rotary nozzle structure for multi-functional oral cleaning, including a delivery pipe (1), characterized in that: One end of the delivery pipe (1) is rotatably provided with a rotating head (10). A working cavity (11) is formed inside the rotating head (10). An expansion pipe (12) connected to the delivery pipe (1) is arranged inside the working cavity (11). The expansion end of the expansion pipe (12) is provided with a high-pressure spray head. Support plates (13) are symmetrically arranged on the rotating head (10) along its length direction. The opposite ends of the support plates (13) are arranged at the bottom of the working cavity (11) through telescopic rods (14), and the other ends are rotatably arranged at the bottom of the working cavity (11) through connecting rods (15). A driving member (2) for driving the support plates (13) to rotate is arranged inside the working cavity (11).

2. The structure of a rotary nozzle for multi-functional oral cleaning according to claim 1, characterized in that: A mask (20) is also slidably arranged on the delivery pipe (1). Anti-slip strips (21) are installed on the side of the mask (20). A water outlet pipe (22) communicated with the inside of the mask (20) is arranged at the bottom of the mask (20).

3. The structure of a rotary nozzle for multi-functional oral cleaning according to claim 1, wherein: The driving member (2) includes rotating shafts (30) symmetrically arranged inside the working cavity (11). A circular plate (31) is eccentrically arranged on the rotating shafts (30). A connecting groove (32) with a T-shaped cross-section is formed on the side of the circular plate (31). A connecting block (33) matched with the connecting groove (32) is hinged to one end of the support plate (13) close to the telescopic rod (14).

4. A multi-functional rotary nozzle structure for oral cleaning according to claim 1, characterized in that: A control member (4) for driving the rotating head (10) to rotate is arranged on the delivery pipe (1). The control member (4) includes a connecting plate (40). The connecting plate (40) is installed on the delivery pipe (1). A control gear (41) is rotatably arranged on the connecting plate (40). A control gear ring (42) meshed with the control gear (41) is arranged outside the rotating head (10).

5. The structure of a rotary nozzle for multi-functional oral cleaning according to claim 1, characterized in that: A driving member (5) for controlling the expansion and contraction of the expansion pipe (12) is arranged inside the working cavity (11). The driving member (5) includes a collar (50). The collar (50) is sleeved on the expansion end of the expansion pipe (12). Special-shaped rods (51) are symmetrically arranged on the collar (50). A driving rack (52) is arranged on the special-shaped rods (51). A driving gear (53) meshed with the driving rack (52) is arranged on the rotating shaft (30).

6. The structure of a rotary nozzle for multi-functional oral cleaning according to claim 1, characterized in that: An adjusting member (6) is arranged inside the expansion pipe (12). The adjusting member (6) includes a moving shaft (60). The moving shaft (60) is slidably arranged along the axis of the expansion pipe (12) inside the expansion end of the expansion pipe (12). A blocking block (61) is arranged at one end of the moving shaft (60) close to the outlet of the expansion pipe (12). A blocking ring (62) is also arranged on the moving shaft (60). The blocking ring (62) is slidably arranged inside the expansion pipe (12) through a tension spring. A plurality of water outlet holes (63) are formed at the expansion end of the blocking ring (62).

7. A rotary nozzle structure for multi-functional oral cleaning according to claim 1, characterized in that: The support plates (13) are telescopic plates. A plurality of massage balls (70) are rotatably arranged at one end of the two support plates (13) close to each other. The other ends of the support plates (13) are slidably provided with electric push rods (73) through telescopic rods (14). A plurality of control plates (71) are arranged at the expansion ends of the electric push rods (73). A plurality of control grooves (72) are formed on the control plates (71) along their widths. The massage balls (70) are in contact with the inside of the control grooves (72).

8. The structure of a multi-functional rotary nozzle for oral cleaning according to claim 6, wherein: One end of the moving shaft (60) away from the outlet of the telescopic tube (12) is provided with a mounting ring (80) through a spring. A resisting rod (81) is installed inside the fixed end of the telescopic tube (12), and the mounting ring (80) is movably in contact with the resisting rod (81).

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