Rotatable nozzle structure of oral irrigator

Abstract

The invention discloses a structure of a rotatable nozzle of a water pick, which relates to the technical field of oral cavity cleaning equipment and comprises a rotating head assembly and a reduction gear box assembly. The rotating head assembly comprises a rotating head shell and a rotating fixing support, the shell is provided with a rotating shaft and a nozzle, and the rotating shaft and the shell can be integrally injection-molded or detachably assembled; the reduction gear box assembly comprises a boss gear, a motor gear, a reduction motor and a reduction gear box, and the reduction motor driving assembly enables the spray head to rotate. The shell can rotate around the main machine shell by 0-180 degrees, the reduction gear box is provided with a water outlet hole, and water discharged from the water pump flows to the spray head through a specific path. In addition, an O-shaped sealing ring, a sealing plug and other sealing structures and a magnet induction structure are further arranged, the spray head can be automatically folded and unfolded through control of the PCB, the problems that a traditional spray head is fixed in position, cannot be automatically folded, is inconvenient to store and the like are solved, and the use experience, the science and technology sense and portability are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of oral cleaning equipment, in particular to a structure of a rotatable nozzle of a waterpik. BACKGROUND

[0002] In the field of oral care, waterpik has gradually become an important tool for family and personal oral care due to its efficient cleaning ability. The working principle of waterpik is to use a water pump to generate high-pressure water flow, and then deliver the high-pressure water flow to the oral cavity through the nozzle for cleaning and flushing the teeth and gums. As the key component of waterpik that contacts the oral cavity, the structure design of the nozzle directly affects the use experience, cleaning effect and portability of the waterpik.

[0003] At present, the mainstream waterpik nozzle structure on the market has many shortcomings. First, in terms of nozzle angle adjustment, most waterpik nozzles are fixedly installed, and users need to constantly adjust the head posture or the position of the waterpik main body to adapt to the nozzle angle when cleaning different parts of the oral cavity (such as the inside of the teeth, the gum groove, the back teeth area, etc.). The operation is cumbersome, and it is difficult to ensure that each cleaning part can be fully flushed, and the cleaning effect is limited. Although some waterpik is designed to manually adjust the angle of the nozzle, the range of the adjusted angle is small, and usually only 30-60 degrees of angle adjustment can be achieved, which cannot meet the needs of users for all-around cleaning of the oral cavity, and the manual adjustment method lacks convenience and intelligence.

[0004] Secondly, in terms of portable storage, the traditional waterpik nozzle cannot realize automatic folding function, and the nozzle is always in the extended state when not in use. This structure design not only leads to a large overall size of the waterpik, occupies more space, and is not convenient for users to store it in a small space such as a handbag, luggage, etc., which brings great inconvenience to carrying out; moreover, the extended nozzle is easy to collide and rub with other objects during carrying, causing damage or contamination of the nozzle, affecting the service life and use hygiene of the waterpik.

[0005] Thirdly, in terms of product intelligence and technological sense, the existing waterpik nozzle structure is simple and lacks intelligent design. Users need to manually turn on and off the waterpik, and manually adjust the angle of the nozzle during use, which cannot realize the functions of automatically opening, automatically folding and automatically adjusting the angle of the nozzle according to the use requirements. The product use experience is relatively single, it is difficult to meet the pursuit of consumers for intelligent products, and it cannot reflect the technological sense of the product, which lacks advantages in market competition.

[0006] In addition, in terms of waterway design, the waterway channel of some oral irrigators has unreasonable design problems. During the transmission process, the water flow is prone to leakage and pressure loss, resulting in unstable water pressure of the spray head, affecting the cleaning effect. At the same time, the cooperation between the waterway and the transmission structure is not close enough, and mutual interference is prone to occur, further reducing the use reliability of the oral irrigator.

[0007] In summary, the current oral irrigator spray head structure has obvious defects in angle adjustment, portable storage, intelligence, and waterway design, and cannot meet the comprehensive needs of users for convenience, intelligence, portability, and cleaning effect. Therefore, developing an oral irrigator rotatable spray head structure that can realize 0-180 degree rotation of the spray head, automatic folding and opening, has intelligent effect and technological sense, and has reasonable waterway design has become an urgent problem in the current oral irrigator technology field. SUMMARY

[0008] The purpose of the present application is to overcome the defects of the existing oral irrigator spray head, such as inability to rotate 0-180 degrees, lack of automatic folding and opening function, lack of intelligent effect and technological sense, poor portable storage, and unreasonable waterway design, and to provide a structure of an oral irrigator rotatable spray head.

[0009] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0010] The structure of a rotatable nozzle of a water pick comprises a rotating head assembly and a reduction gear box assembly; the rotating head assembly comprises a rotating head shell and a rotating fixed support, one side of the rotating head shell is provided with a rotating shaft, and the other side is provided with a nozzle, the nozzle can rotate around the rotating shaft by 0-180 degrees, which can completely cover the angle required for oral cleaning of users, and meet the cleaning needs of users for different parts of teeth, such as inner side, outer side, gum groove and back teeth; one side of the rotating fixed support is nested outside the rotating shaft, one side of the rotating fixed support is provided with a main machine shell, the main machine shell provides external protection for the whole rotatable nozzle structure of the water pick, and also provides an installation carrier for each component; the reduction gear box assembly comprises a boss gear, a motor gear, a reduction motor and a reduction gear box, the boss gear is installed inside the reduction gear box, the boss gear is engaged with the motor gear, power transmission is realized through gear engagement transmission, the reduction motor is installed on one side of the motor gear and fixed outside the gear box, the reduction motor serves as a power source, drives the gear set of the reduction gear box assembly to rotate, and then drives the rotating head assembly associated with the reduction gear box assembly to move, so that the nozzle rotates around the axis of the rotating shaft sleeve of the reduction gear box, and the automatic rotation function of the nozzle is realized, the cooperation of the reduction gear box assembly and the rotating head assembly makes the product more intelligent and scientific, the nozzle of the water pick can be automatically folded and unfolded, which is convenient for users to use, and the nozzle can be stored when going out, which greatly reduces the overall volume of the product and is convenient for carrying.

[0011] Further, the rotating shaft sleeve of the reduction gear box is a hollow water outlet hole, water pumped by the water pump passes through the water outlet channel inside the water pick, then passes through the hollow hole of the rotating shaft sleeve to the rotating head assembly, and finally sprays water through the nozzle to realize the water pick function, which ensures that the water flow path is clear and smooth during transmission, effectively avoids water leakage and pressure loss, ensures stable water outlet pressure of the nozzle, and improves the cleaning effect.

[0012] Further, the rotating shaft and the rotating head shell of the rotating head assembly can be integrally injection molded, the integral injection molding mode can enhance the connection strength between the rotating shaft and the rotating head shell, reduce the assembly process, improve the production efficiency, and reduce the production cost; at the same time, the rotating shaft and the rotating head shell can also be assembled in parts, the part assembly mode is convenient for separate machining, replacement and maintenance of the rotating shaft or the rotating head shell during production, increases the flexibility of the structure design, and can select a suitable machining and assembly mode according to actual production needs and use scenarios.

[0013] Further, the inner side wall of the rotating head shell is fixedly connected with the outer side wall of the rotating fixed support, ensuring the stability of the connection between the rotating head shell and the rotating fixed support, and avoiding loosening during rotation; the annular gap between the inner side wall of the main shell and the outer side wall of the rotating fixed support is provided with a first O-shaped sealing ring, which can effectively fill the gap between the main shell and the rotating fixed support, play a sealing role, prevent external dust and impurities from entering the internal components, and at the same time prevent water in the internal waterway from leaking, ensuring the normal working environment of the internal components of the oral irrigator.

[0014] Further, the outer side of the rotating shaft is provided with a second O-shaped sealing ring, which further enhances the sealing between the rotating shaft and the rotating shaft sleeve, prevents water from leaking from the gap between the rotating shaft and the rotating shaft sleeve, and ensures the sealing of the waterway; an inner side of the rotating head shell adjacent to the nozzle is provided with a nozzle fastener, which is used to firmly mount the nozzle on the rotating head shell, prevents the nozzle from falling off during use, ensures the stability and reliability of the nozzle installation, and facilitates disassembly and replacement when the nozzle is damaged.

[0015] Further, the reduction gear box is fixed in the inner side of the main shell by lock screws, which have the characteristics of firm connection and convenient disassembly, facilitating the installation, maintenance and replacement of the reduction gear box; one side of the reduction gear box is provided with a rotating shaft sleeve matched with the rotating shaft, and the rotating shaft sleeve and the rotating shaft are gap matched, ensuring that the rotating shaft can rotate smoothly around the axis of the rotating shaft sleeve, and the rotating shaft sleeve plays a guiding role on the rotating shaft, ensuring the coaxiality of the rotating shaft during rotation; the rotating shaft sleeve and the rotating shaft are provided with a fluid channel connected with each other, which is connected with the hollow water outlet hole of the rotating shaft sleeve of the reduction gear box, forming a complete waterway, ensuring that the water pumped by the water pump can be smoothly delivered to the nozzle through the fluid channel.

[0016] Further, one side of the reduction gear box is provided with a containing cavity containing the boss gear, which provides installation space for the boss gear and limits the boss gear to prevent it from deviating during rotation, ensuring the accuracy and stability of the meshing between the boss gear and the motor gear; a limiting bone is arranged in the containing cavity to further limit the rotation range of the boss gear, avoiding excessive rotation of the boss gear to cause the rotation angle of the nozzle to exceed the design range of 0-180 degrees, and ensuring the precise control of the rotation angle of the nozzle; a pump water outlet connector is installed on the side away from the boss gear, which is used to connect the water pump and the waterway of the reduction gear box to transport the water pumped by the water pump to the hollow water outlet hole of the reduction gear box; a PCB board is arranged between the pump water outlet connector and the reduction gear box, which is the control core of the oral irrigator and is used to control the start, stop and speed of the reduction motor, thereby controlling the rotation, automatic folding and automatic opening of the nozzle, and the related circuit elements are integrated on the PCB board to realize the function control of the oral irrigator.

[0017] Further, at least two protruding columns are arranged on one side of the boss gear, which are fixedly connected with the rotating fixed support, and the rotation power of the boss gear is transmitted to the rotating fixed support through the fixed connection of the protruding columns and the rotating fixed support, thereby driving the whole rotating head assembly to rotate and realizing the rotary motion of the nozzle; the arrangement of at least two protruding columns can ensure the balance and stability of the connection between the boss gear and the rotating fixed support, avoiding structural damage caused by uneven stress during power transmission; the other side of the boss gear is provided with a limiting groove matched with the limiting bone, which cooperates with the limiting bone to further precisely limit the rotation angle of the boss gear, ensuring the precise rotation of the nozzle within the range of 0-180 degrees and preventing the nozzle or internal components from being damaged due to excessive rotation of the boss gear.

[0018] Further, the reduction motor and the reduction gear box are fixedly connected through a countersunk screw, which can make the screw head sink into the installation surface of the reduction motor or the reduction gear box, avoiding the protruding screw head from affecting the installation and movement of other components, while ensuring the firmness of the connection between the reduction motor and the reduction gear box; a soft rubber block and a hard rubber block are installed between the reduction motor and the motor gear, the soft rubber block has a certain elasticity and can play a buffering role to reduce the vibration generated by the reduction motor during operation and transmitted to the motor gear, reduce noise, and avoid deviation of the meshing between the motor gear and the boss gear caused by vibration; the hard rubber block plays a fixing and supporting role to ensure the relative position stability between the reduction motor and the motor gear, and ensure the accuracy and reliability of power transmission.

[0019] Further, one side of the rotating fixing support is provided with a magnet, when the rotating head assembly drives the rotating fixing support to rotate to the fixed position, the magnet and the switch on the PCB board are inductively coupled, and the opening and closing of the oral irrigator related functions are realized through the magnetic induction effect, for example, when the nozzle rotates to the open position (such as 0 degree position, that is, the nozzle is in the working extended state), the magnet and the switch on the PCB board are inductively coupled, and the oral irrigator is triggered to start the water spraying function; when the nozzle rotates to the stowed position (such as 180 degree position, that is, the nozzle is in the stowed state), the magnet and the switch on the PCB board are inductively coupled again, and the oral irrigator is triggered to stop the water spraying function, and at the same time, the locking of the nozzle in the stowed state can be realized, so that the nozzle is prevented from being accidentally opened during carrying, and the intelligence and use convenience of the product are further improved.

[0020] Further, a main body soft rubber is installed between the speed reduction gear box and the main shell, the main body soft rubber is closely attached to the contact surface of the speed reduction gear box and the main shell, and plays a waterproof role between the two, preventing water or other liquids from the outside from entering the inside of the speed reduction gear box, damaging the internal gear set and the speed reduction motor, and also preventing the waterway inside the speed reduction gear box from leaking, ensuring the waterproof performance and use safety of the oral irrigator, and prolonging the service life of the product.

[0021] Further, a sealing plug is arranged in the end through hole of the pump outlet water connection pipe, which can effectively seal the end through hole of the pump outlet water connection pipe, prevent water in the waterway from leaking from the end of the pump outlet water connection pipe when the water pump stops working, and prevent dust and impurities from the outside from entering the inside of the waterway through the end through hole of the pump outlet water connection pipe, thereby ensuring the cleanliness and sealing performance of the waterway.

[0022] Compared with the prior art, the present application has the following beneficial effects:

[0023] 1. Realize the 0-180 degree rotation of the nozzle: the present application drives the rotating head assembly to move through the speed reduction gear box assembly, so that the nozzle can rotate 0-180 degrees along the axis of the speed reduction gear box rotating shaft sleeve, and the rotation angle range can completely cover the angle required for oral cleaning, so that the user can fully clean different parts of the teeth, such as the inside, outside, gum groove and back teeth, without adjusting the head posture or the position of the oral irrigator main body, greatly improving the convenience and cleaning effect.

[0024] 2. With intelligent automatic storage function: the structure drives the reduction gear box assembly through the reduction motor to drive the spray head to realize automatic folding and automatic opening. When the user uses the oral irrigator, the spray head can be automatically opened to the working position. When the user finishes using it, the spray head can be automatically folded to the storage position. Not only does it make the product more intelligent and scientific, but also meets the needs of consumers for intelligent products. After the spray head is folded, the overall size of the oral irrigator is greatly reduced, making it easy to carry when going out, and solving the problem of poor portability of traditional oral irrigators.

[0025] 3. Reasonable waterway design and good sealing performance: the rotating shaft sleeve of the reduction gear box is designed as a hollow water outlet hole, which cooperates with the fluid channel of the rotating shaft to form a complete and smooth waterway. The water pumped by the water pump can be stably transmitted to the spray head, avoiding water leakage and pressure loss, ensuring stable water pressure of the spray head and improving cleaning effect. At the same time, through the setting of the first O-shaped sealing ring, the second O-shaped sealing ring, the main body soft rubber and the sealing plug, the main machine shell and the rotating fixed support, the rotating shaft and the rotating fixed support, the reduction gear box and the main machine shell, and the pump outlet water connection pipe end are sealed, ensuring the sealing performance of the waterway and the waterproof performance of the product from all directions, preventing water leakage from damaging the internal components and prolonging the service life of the product.

[0026] 4. Flexible structure design, convenient installation and maintenance: the rotating shaft and the rotating head shell of the rotating head assembly can be integrally injection molded or disassembled and assembled. Integrally injection molding can improve production efficiency and reduce cost, while disassembled and assembled can facilitate individual processing, replacement and maintenance, increasing the flexibility of structure design. The reduction gear box is fixed inside the main machine shell by locking screws, and the reduction motor and the reduction gear box are fixedly connected by countersunk screws. These connection methods are easy to disassemble, facilitating the installation, maintenance and replacement of each component, and reducing the maintenance cost in the later period.

[0027] 5. Intelligent induction control, convenient to use: the magnet installed on the rotating fixed support and the switch on the PCB board are inductively connected. When the rotating head assembly is rotated to the fixed position, the oral irrigator function can be automatically turned on and off without manual operation, further improving the intelligence and convenience of the product. At the same time, it can lock the spray head storage state to prevent the spray head from being accidentally opened during carrying, improving the reliability of product use. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is the overall explosion structure schematic diagram of the patent;

[0029] Figure 2 It is the overall structure schematic diagram of the patent;

[0030] Figure 3 It is the overall cross-sectional structure schematic diagram of the patent;

[0031] Figure 4 The exploded structural diagram of the rotary head assembly of the present patent;

[0032] Figure 5 The exploded structural diagram of the reduction gear box assembly of the present patent;

[0033] Figure 6 The structural diagram of the reduction gear box of the present patent;

[0034] Figure 7 The structural diagram of the boss gear of the present patent.

[0035] Figure label: 1, rotary head assembly; 11, rotary head shell; 12, rotary fixed support; 13, rotary shaft; 131, second O-shaped sealing ring; 132, third O-shaped sealing ring; 14, spray head; 15, first O-shaped sealing ring; 16, spray head fastener; 17, magnet; 2, reduction gear box assembly; 21, reduction gear box; 211, accommodating cavity; 212, rotating shaft sleeve; 213, fluid passage; 214, limiting bone; 22, boss gear; 221, protruding column; 222, limiting groove; 23, motor gear; 24, reduction motor; 25, soft rubber block; 26, hard rubber block; 27, PCB board; 28, pump water outlet connector; 281, sealing plug; 29, main body soft rubber; 30, main shell. DETAILED DESCRIPTION

[0036] In order to facilitate the understanding of the present patent, the present patent will be described more fully below with reference to the related drawings. The preferred embodiments of the present patent are shown in the drawings. However, the present patent can be realized in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present patent more thorough and comprehensive.

[0037] Please refer to Figures 1-7The utility model provides a structure of oral irrigator rotatable nozzle, including rotation head subassembly 1 and reduction gear box subassembly 2, rotation head subassembly 1 includes rotation head shell 11 and rotation fixed support 12, one side of rotation head shell 11 is equipped with rotation shaft 13, and the other side is installed with nozzle 14, and nozzle 14 can realize 0 degree-180 degree rotation around rotation shaft 13, and the rotation angle range can cover the angle required by user oral cavity cleaning completely, satisfies the cleaning demand of user to different parts such as tooth inner side, outside, gum groove and back tooth, one side of rotation fixed support 12 is nested in rotation shaft 13 outside, one side of rotation fixed support 12 is installed with main machine shell 30, and main machine shell 30 provides external protection for the whole oral irrigator rotatable nozzle structure, and simultaneously provides the installation carrier for each component, reduction gear box subassembly 2 includes boss gear 22, motor gear 23, reduction motor 24 and reduction gear box 21, one side in boss gear 22 is installed in reduction gear box 21, boss gear 22 is engaged with motor gear 23, and the transmission of power is realized through gear engagement transmission, reduction motor 24 is installed in one side of motor gear 23 and is fixed to gear box 21 outside, and reduction motor 24 is as power source, drives the rotation of gear set of reduction gear box subassembly 2, and then drives the rotation head subassembly 1 associated with reduction gear box subassembly 2 to move, makes nozzle 14 rotate along the axis of rotation shaft sleeve 212 of reduction gear box 21, realizes the automatic rotation function of nozzle 14, and the utility model discloses the cooperation of reduction gear box subassembly 2 and rotation head subassembly 1, makes the product more intelligent effect and science and technology feeling, makes oral irrigator nozzle 14 can be automatically folded and automatically opened, is convenient for user to use, simultaneously can be stored when going out nozzle 14, greatly reduces the overall volume of product, is convenient for carrying.

[0038] The rotating head assembly 1 comprises a rotating head shell 11, a rotating fixed support 12, a spray head 14 and related sealing members. First, according to the production requirements, the processing method of the rotating shaft 13 and the rotating head shell 11 is selected: if production efficiency is pursued, an integral injection molding process is adopted to integrally injection mold the rotating shaft 13 and the rotating head shell 11 at one time to ensure the connection strength; if it is required to facilitate later maintenance, a disassembled assembly method is adopted, and the separately processed rotating shaft 13 is fixed in the mounting groove on one side of the rotating head shell 11 through buckling or screwing. Subsequently, the spray head 14 is placed in the spray head 14 mounting hole on the other side of the rotating head shell 11, and is fixed through the spray head fastener 16: the spray head fastener 16 is in the form of a ring, and the inner side is provided with a protrusion which is matched with the clamping groove on the rotating head shell 11, after the spray head 14 is inserted, the spray head fastener 16 is pressed to be clamped into the clamping groove, the fixing of the spray head 14 and the rotating head shell 11 is completed, and the spray head 14 is prevented from falling off during use. Then, the second O-shaped sealing ring 131 and the third O-shaped sealing ring 132 are sleeved in the sealing groove on the outer side of the rotating shaft 13, and the sealing rings need to completely fit the inner wall of the sealing groove to ensure the sealing effect. Finally, the rotating fixed support 12 is nested on the outer side of the rotating shaft 13, the inner side wall of the rotating fixed support 12 and the outer side wall of the rotating shaft 13 are in clearance fit, and at the same time, the outer side wall of the rotating fixed support 12 and the inner side wall of the rotating head shell 11 are fixed through screws to ensure that the rotating head shell 11 and the rotating fixed support 12 move synchronously; the magnet 17 is embedded in the specified mounting hole of the rotating fixed support 12, and the magnet 17 is fixed by interference fit to prevent displacement during rotation.

[0039] The reduction gear box assembly 2 comprises a reduction gear box 21, a boss gear 22, a motor gear 23, a reduction motor 24 and a pump outlet water connector 28. First, the boss gear 22 is installed in the accommodating cavity 211 of the reduction gear box 21, the inner wall of the accommodating cavity 211 is provided with a limiting bone 214, the limiting groove 222 of the boss gear 22 needs to be aligned with the limiting bone 214, so as to ensure that the boss gear 22 can rotate around the shaft in the accommodating cavity 211 without deviation. Then, the motor gear 23 is installed on the output shaft of the reduction motor 24, the motor gear 23 is in interference fit with the output shaft of the reduction motor 24 to ensure synchronous rotation; the soft rubber block 25 and the hard rubber block 26 are installed between the reduction motor 24 and the motor gear 23 in sequence, the soft rubber block 25 is attached to the shell of the reduction motor 24, the hard rubber block 26 is attached to the side surface of the motor gear 23, and the three are fixed by screws, the soft rubber block 25 absorbs the vibration of the motor, and the hard rubber block 26 fixes the position of the motor gear 23. Subsequently, the reduction motor 24 with the assembled motor gear 23 is fixed on the outside of the reduction gear box 21 by a countersunk screw, and the position needs to be adjusted during fixing, so that the motor gear 23 is precisely engaged with the boss gear 22, the teeth are completely aligned, and smooth power transmission is ensured. Then, the pump outlet water connector 28 is installed on the side of the reduction gear box 21 away from the boss gear 22, one end of the pump outlet water connector 28 is inserted into the waterway interface of the reduction gear box 21 and sealed by a sealing ring, and the other end extends to the position of the oral irrigator water pump; a sealing plug 281 is inserted into the through hole at the end of the pump outlet water connector 28, the sealing plug 281 is made of elastic material and completely blocks the through hole to prevent water leakage and impurities from entering. Finally, the PCB board 27 is installed between the pump outlet water connector 28 and the reduction gear box 21, the PCB board 27 is fixed on the mounting column of the reduction gear box 21 by screws, the circuit interface on the PCB board 27 is connected with the wiring terminals of the reduction motor 24, the induction switch and other components to realize the control function.

[0040] Finally, the main body soft rubber 29 is laid in the installation area of the reduction gear box 21 on the inside of the main shell 30, the main body soft rubber 29 is in annular structure and attached to the inner wall of the main shell 30, and then the assembled reduction gear box 21 is fixed in the inside of the main shell 30 by locking screws, the locking screws need to be uniformly tightened to ensure that the reduction gear box 21 is closely attached to the main shell 30, the main body soft rubber 29 is compacted, and waterproof sealing is realized. Then, the rotating head assembly 1 is connected with the reduction gear box 21, the rotating shaft sleeve 212 on one side of the reduction gear box 21 is inserted into the center hole of the rotating shaft 13, the rotating shaft sleeve 212 is in clearance fit with the rotating shaft 13, and the fluid passages 213 at the centers of the two are completely aligned to ensure waterway connection; at the same time, the three protruding columns 221 on the boss gear 22 are inserted into the corresponding mounting holes of the rotating fixed support 12 and are fixed by interference fit to realize the linkage of the boss gear 22 and the rotating fixed support 12.

[0041] Working principle

[0042] The working principle of the structure of the oral irrigator rotatable nozzle is developed around four core links of power transmission, angle control, waterway transmission and intelligent induction. In the aspect of power transmission, the PCB board 27 controls the operation of the speed reducer motor 24, the motor drives the motor gear 23, the gear meshing drives the boss gear 22, the boss gear 22 rotates the fixed support 12 through the convex column 221, and then drives the rotating head shell 11 and the nozzle 14, forming a complete power chain. In the aspect of angle control, the limiting bone 214 of the speed reducer gear box 21 containing cavity 211 cooperates with the limiting groove 222 of the boss gear 22 to limit the rotation of the nozzle 14 at 0-180 degrees, and the automatic folding and unfolding is realized by the cooperation of the motor forward and reverse rotation, which meets the cleaning and storage needs. In the aspect of waterway transmission, the high-pressure water flow generated by the water pump passes through the pump water outlet connector 28 into the hollow rotating shaft sleeve 212 of the speed reducer gear box 21, and then enters the nozzle 14 through the fluid channel 213 of the rotating shaft 13. The first O-shaped sealing ring 15, the second O-shaped sealing ring 131, the third O-shaped sealing ring 132 and the main body soft rubber 29 ensure the sealing of the waterway, avoid leakage and ensure the stability of the water pressure. In the aspect of intelligent induction, the magnet 17 on the rotating fixed support 12 rotates with the nozzle 14, and when it reaches the 0-degree or 180-degree position, it is inducted with the induction switch on the PCB board 27, triggering the water pump start and stop and the nozzle 14 locking, realizing the automatic linkage of functions, reducing manual operation, improving the intelligence and convenience, and the overall structure cooperates to realize the automatic rotation, folding and unfolding of the nozzle 14, stable water supply and intelligent control, solving the pain points of traditional oral irrigators.

[0043] The above-described embodiments only express the optimal implementation of the present application, and the description is more specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the scope of protection of the present application. Therefore, the protection scope of the present application patent should be subject to the appended claims.

Claims

1. A structure of a rotatable jet of an oral irrigator, characterized by, The utility model provides a rotating head assembly (1) and reduction gear box assembly (2) are included, the rotating assembly (1) includes rotating head shell (11) and rotating fixed support (12), one side of rotating head shell (11) is equipped with rotating shaft (13), and the other side is installed with shower nozzle (14), one side of rotating fixed support (12) is nested in the outside of rotating shaft (13), and one side of rotating fixed support (12) is installed with main machine shell (30), the reduction gear box assembly (2) includes boss gear (22), motor gear (23), reduction motor (24) and reduction gear box (21), the inside of reduction gear box (21) is installed boss gear (22), boss gear (22) is engaged with motor gear (23), reduction motor (24) is installed in one side of motor gear (23) and is fixed to the outside of gear box (21), and reduction motor (24) drives the rotation of the gear set of reduction gear box assembly (2) to make the rotation of shower nozzle (14) along the axis of rotation sleeve (212) of reduction gear box (21).

2. The structure of a rotatable jet of oral irrigator according to claim 1, wherein, The inner side wall of the rotating head shell (11) is fixedly connected with the outer side wall of the rotating fixed support (12), and the annular gap between the inner side wall of the main machine shell (30) and the outer side wall of the rotating fixed support (12) is provided with a first O-shaped sealing ring (15).

3. The structure of a rotatable jet of oral irrigator according to claim 1, wherein, The outer side of the rotating shaft (13) is provided with a second O-shaped sealing ring (131) and a third O-shaped sealing ring (132), and an inner side of the rotating head shell (11) adjacent to the shower nozzle (14) is provided with a shower nozzle fastener (16).

4. The structure of a rotatable jet of oral irrigator according to claim 1, wherein, The reduction gear box (21) is fixed in the inner side of the main machine shell (30) by locking screws, one side of the reduction gear box (21) is provided with a rotating shaft sleeve (212) matched with the rotating shaft (13), and the rotating shaft sleeve (212) and the rotating shaft (13) are provided with a fluid channel (213) in communication.

5. The structure of a rotatable jet of oral irrigator according to claim 1, wherein, One side of the reduction gear box (21) is provided with a containing cavity (211) accommodating the boss gear (22), the containing cavity (211) is provided with a limiting bone (214), a pump-out water connecting pipe (28) is installed on the side away from the boss gear (22), and a PCB board (27) is arranged between the pump-out water connecting pipe (28) and the reduction gear box (21).

6. The structure of a rotatable jet of oral irrigator according to claim 1, wherein, One side of the boss gear (22) is provided with at least two protruding columns (221) fixedly connected with the rotating fixed support (12), and the other side of the boss gear (22) is provided with a limiting groove (222) matched with the limiting bone (214).

7. The structure of a rotatable jet of oral irrigator according to claim 1, wherein, The reduction motor (24) and the reduction gear box (21) are fixedly connected by countersunk screws, and the reduction motor (24) is provided with a soft rubber block (25) and a hard rubber block (26) between the reduction motor (24) and the motor gear (23).

8. The structure of a rotatable jet of oral irrigator according to claim 1, wherein, One side of the rotating fixed support (12) is provided with a magnet (17). The magnet and the magnetic induction switch of the PCB control the induction of the fact that the shower nozzle has been stored in place.

9. The structure of a rotatable jet of oral irrigator according to claim 1, wherein, A main body soft rubber (29) is arranged between the reduction gear box (21) and the main machine shell (30).

10. The structure of a rotatable jet of oral irrigator according to claim 5, wherein, The end through hole of the pump-out water connection pipe (28) is provided with a sealing plug (281).

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