Water pick

Abstract

The utility model provides a water pick which comprises a water tank, a machine shell, a nozzle and a water pump. The machine shell is movably inserted into the water tank in a lifting mode, the machine shell can be contained in the water tank or extend outwards by a certain length from a water tank opening, and a main body cavity and a containing cavity are formed in the machine shell. The nozzle is detachably installed on the machine shell and can be contained in the containing cavity. The water pump is arranged in the main body cavity, the water inlet end is communicated with the interior of the water tank, and the water outlet end is communicated with the bottom of a nozzle mounted on the shell. According to the oral irrigator, when a user goes out and needs to carry the oral irrigator, the nozzle can be detached from the machine shell and stored in the storage cavity, then the machine shell is stored in the water tank, and therefore the oral irrigator is convenient to carry; when the oral irrigator needs to be used, the nozzle is taken out of the containing cavity and installed on the machine shell, then the machine shell is pulled out from the water tank opening to release the space in the water tank, and then sufficient flushing fluid can be filled into the water tank to be used.

Description

Technical Field

[0001] The utility model relates to the technical field of oral cleaning appliances, and particularly relates to a dental irrigator. Background Art

[0002] Gingival sulcus and interdental space are relatively difficult to clean parts in the human oral cavity. Toothbrush or dental floss can remove the deposits on the tooth surface, but it is difficult to effectively clean the food residues in the gingival sulcus or interdental space. According to the research of relevant institutions, water flow with appropriate pressure can effectively clean people's teeth, and the cleaning effect of the dental irrigator is achieved by the impact force of the high-speed water column ejected under a certain pressure.

[0003] In the field of oral hygiene, as an effective cleaning tool, the dental irrigator has been widely used in the health care of teeth and gums. Traditional dental irrigators usually include a water pump, a water tank and a nozzle. Although the above structure meets the basic cleaning requirements in terms of function, there are still at least the following deficiencies: 1) In the existing design of dental irrigators, the nozzle is usually fixedly installed with the water pump, which makes the dental irrigator vulnerable to pollution or damage during daily storage and travel, thus affecting the normal use of users and posing a certain health risk; in addition, the shape of the nozzle also increases the safety risk during the carrying process of users, for example, the nozzle may accidentally poke the user or other objects, thus causing harm to the user or other objects; 2) The water tank of the existing dental irrigator is generally relatively fixed with the water pump. If the volume of the water tank is too large, during travel or work, the large water tank not only increases the burden of carrying, but also occupies more storage space; if the volume of the water tank is too small, the situation of insufficient water volume in the water tank is likely to occur.

[0004] Therefore, it is necessary to provide a dental irrigator with a nozzle structure convenient for storage and carrying, and a water tank structure that can ensure sufficient water volume without increasing the carrying burden. Summary of the Utility Model

[0005] Therefore, the technical problem to be solved by the utility model is to overcome the technical defects that the nozzle and water tank of the dental irrigator in the prior art are usually fixed with the water pump, resulting in a large volume of the dental irrigator and inconvenient to carry, and at the same time, the nozzle is vulnerable to pollution or damage during the carrying process, so as to provide a dental irrigator with a nozzle structure convenient for storage and carrying, and a water tank structure that can ensure sufficient water volume without increasing the carrying burden.

[0006] For this purpose, the utility model provides a dental irrigator, comprising:

[0007] A water tank having a water tank opening facing upward;

[0008] The housing is inserted into the water tank through the water tank opening in a liftable and movable manner, and is limited by a limiting structure arranged between the water tank and the housing, so that the housing has a storage state stored inside the water tank and a release state extending out a certain length from the water tank opening relative to the water tank; a main body cavity and a storage cavity are arranged inside the housing, and a water intake is arranged at the bottom of the main body cavity and communicated with the inside of the water tank;

[0009] The nozzle is detachably installed on the housing and can be received into the storage cavity;

[0010] The water pump is arranged inside the main body cavity, the water inlet end is communicated with the inside of the water tank through the water intake, and the water outlet end is communicated with the bottom of the nozzle 3 installed on the housing.

[0011] Further, the housing includes:

[0012] The first housing, with the main body cavity formed inside, a first opening provided at the top, and the water intake provided at the bottom;

[0013] The second housing includes an inner housing adapted to be inserted inside the first housing, a mounting table provided at the top of the inner housing, and a top cover covering the top of the mounting table; the storage cavity is formed inside the inner housing, the mounting table is adapted to be covered and installed on the first opening, and a second opening communicated with the storage cavity is provided, and a third opening communicated with the second opening is provided on the top cover; the nozzle can be received into the storage cavity through the third opening and the second opening;

[0014] The soft pad is openably and closably covered on the third opening.

[0015] Further, it further includes:

[0016] The jack is formed on the top cover and is arranged adjacent to the third opening;

[0017] The inserting rod is formed below the soft pad and can be rotatably installed in the jack; a limiting flange is formed on the rod body of the inserting rod, the outer diameter of the limiting flange is larger than the inner diameter of the jack, and under the action of an external force, the limiting flange can pass through the jack downward to axially limit the inserting rod;

[0018] The soft plug is formed below the soft pad and can enter the inside of the second opening through the third opening to close the second opening.

[0019] Further, the limiting structure includes:

[0020] The guiding planes are two, respectively formed on two opposite outer side walls of the first housing and extending in the vertical direction;

[0021] The first limiting protrusions are two and are respectively formed on the tops of the two guiding planes;

[0022] The second limiting protrusions are two and are respectively formed on the bottoms of the two guiding planes and are respectively vertically opposite to the two first limiting protrusions;

[0023] The third limiting protrusions are two and are respectively formed above the opposite inner side walls of the water tank and are respectively arranged opposite to the two guiding planes;

[0024] The third limiting protrusions can slide up and down between the first limiting protrusions and the second limiting protrusions and are limited by the first limiting protrusions and the second limiting protrusions.

[0025] Furthermore, it further includes:

[0026] The installation groove is annular and is formed on the outer side wall of the bottom of the first housing and is located below the guiding plane;

[0027] The sealing ring is sleeved and installed in the installation groove, is in close contact with the inner wall of the water tank, and can slide up and down along the inner wall of the water tank.

[0028] Furthermore, it further includes:

[0029] The installation cylinder is arranged on the top of the installation table;

[0030] The installation port is opened on the top cover and is communicated with the installation cylinder;

[0031] The installation column is arranged at the bottom of the nozzle and can be movably inserted into the interior of the installation cylinder through the installation port;

[0032] The water outlet pipe is located inside the main body cavity, one end is communicated with the installation column, and the other end is communicated with the water outlet end of the water pump;

[0033] The locking structure is arranged between the installation cylinder and the installation column and has a locking state of locking and fixing the installation column and a release state of not locking the installation column.

[0034] Furthermore, the locking structure includes:

[0035] The clamping groove is an annular groove opened on the installation column;

[0036] The notch is opened on one side of the installation cylinder;

[0037] The clamping part has a guiding hole, and the clamping part is adapted to be sleeved outside the installation cylinder through the guiding hole and be horizontally movable; at both ends of the clamping part in the moving direction, a positioning convex block extending inwards towards the guiding hole and a pressing convex block extending outwards away from the guiding hole are respectively arranged; the positioning convex block is adapted to be clamped with the clamping groove;

[0038] The elastic part is installed between the pressing convex block and the installation cylinder;

[0039] In the initial state, the elastic part pushes the pressing convex block outwards, so that the positioning convex block enters the interior of the installation cylinder through the notch, and further enables the positioning convex block to be clamped with the clamping groove;

[0040] When an external force is used to press the pressing convex block inwards, the pressing convex block moves towards the direction close to the installation cylinder, the elastic part is compressed, the positioning convex block moves synchronously with the pressing convex block, exits the notch, and further enables the positioning convex block to be disengaged from the clamping with the clamping groove.

[0041] Further, a ventilation pipe communicating with the interior of the inner shell is arranged at the bottom of the inner shell;

[0042] A ventilation hole communicating with the ventilation pipe is arranged at the bottom of the first shell;

[0043] There is an installation gap between the soft pad and the third opening and the second opening; or the soft pad can be deformed when a negative pressure is generated in the inner shell, so as to generate a ventilation gap between the soft pad and the third opening and between the soft pad and the second opening.

[0044] Further, it further includes:

[0045] A liquid adding port is opened on the side wall of the water tank for adding flushing liquid into the interior of the water tank;

[0046] A liquid adding cover is detachably covered on the liquid adding port for closing or opening the liquid adding port.

[0047] Further, it further includes:

[0048] A water suction pipe has one end installed on the water pump and the other end extending into the interior of the water tank;

[0049] A gravity ball is arranged at the other end of the water suction pipe.

[0050] The technical solution provided by the present utility model has the following advantages:

[0051] The oral irrigator of the present utility model comprises a water tank, a housing, a nozzle and a water pump; wherein, the water tank has a water tank opening facing upward; the housing is inserted into the water tank through the water tank opening in a liftable manner and is limited by a limiting structure arranged between the water tank and the housing, so that the housing has a storage state of being stored inside the water tank and a release state of extending out a certain length from the water tank opening relative to the water tank; a main body cavity and a storage cavity are arranged inside the housing, and a water intake port communicating with the inside of the water tank is arranged at the bottom of the main body cavity; the nozzle is detachably installed on the housing and can be received into the storage cavity; the water pump is arranged inside the main body cavity, the water inlet end communicates with the inside of the water tank through the water intake port, and the water outlet end communicates with the bottom of the nozzle installed on the housing.

[0052] For the oral irrigator of the present utility model, when it is necessary to carry the oral irrigator of this embodiment when going out, the nozzle can be detached from the housing and received into the storage cavity, and then the housing can be received inside the water tank, thus facilitating carrying; when it is necessary to use the oral irrigator of this embodiment, take out the nozzle from the storage cavity and install it on the housing, and then pull the housing out from the water tank opening to release the space inside the water tank, and then sufficient flushing liquid can be filled into the water tank for use. Brief Description of the Drawings

[0053] In order to more clearly illustrate the technical solutions in the prior art or the specific embodiments of the present utility model, the following briefly introduces the drawings used in the description of the prior art or specific embodiments.

[0054] Figure 1 Overall structural schematic diagram of the oral irrigator of the present utility model.

[0055] Figure 2 Front view of the oral irrigator of the present utility model.

[0056] Figure 3 Cross-sectional view of the oral irrigator of the present utility model.

[0057] Figure 4 Exploded view of the oral irrigator of the present utility model.

[0058] Figure 5 Structural schematic diagram of the first housing.

[0059] Figure 6 Schematic diagram of the snap-fit member and the elastic member assembled on the mounting table.

[0060] Figure 7 Structural schematic diagram of the mounting table and the inner housing.

[0061] Figure 8 Structural schematic diagram of the snap-fit member.

[0062] Figure 9 It is a schematic structural diagram of a nozzle.

[0063] Figure 10 It is a schematic structural diagram of a soft pad.

[0064] Reference numerals: 1, water tank; 11, water tank opening; 12, third limiting protrusion; 13, liquid filling port; 14, liquid filling cap; 2, housing; 200, ventilation gap; 21, first housing; 210, main cavity; 211, first opening; 212, water intake; 213, guiding plane; 214, first limiting protrusion; 215, second limiting protrusion; 216, installation groove; 217, ventilation hole; 22, second housing; 220, storage cavity; 2200, second opening; 221, inner housing; 2211, ventilation pipe; 222, top cover; 2220, installation opening; 2221, third opening; 2222, jack; 223, installation cylinder; 2231, notch; 225, installation table; 23, soft pad; 231, insertion rod; 232, limiting flange; 233, soft plug; 24, sealing ring; 25, clamping member; 250, guiding hole; 251, positioning protrusion; 252, pressing protrusion; 26, elastic member; 27, pressing plate; 3, nozzle; 31, installation column; 311, clamping groove; 4, water pump; 41, water suction pipe; 42, gravity ball; 43, water outlet pipe. Detailed implementation manners

[0065] To enable those skilled in the art to better understand this solution, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present application.

[0066] It should be noted that the terms "first", "second", etc. in the claims and the description of the present application are used to distinguish similar objects, rather than to describe a specific order or sequence. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device including a series of steps or units is not limited to the clearly listed steps or units, but may also include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0067] In this application, the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", etc. is based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe this application and its embodiments, and are not used to limit that the indicated device, element or component must have a specific orientation, or be constructed and operated in a specific orientation. Moreover, in addition to being able to represent the orientation or positional relationship, some of the above terms may also be used to represent other meanings. For example, the term "upper" may also be used to represent a certain attachment relationship or connection relationship in some cases. For those skilled in the art, the specific meanings of these terms in this application can be understood according to specific circumstances. Additionally, the meaning of the term "a plurality" should be two or more. It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can be combined with each other.

[0068] The following will detail this application with reference to the drawings and in combination with embodiments.

[0069] This embodiment provides a dental irrigator, as Figures 1-10 shown, including a water tank 1, a housing 2, a nozzle 3, and a water pump 4; wherein, the water tank 1 has a water tank opening 11 facing upward; the housing 2 is inserted into the water tank 1 in a liftable and movable manner through the water tank opening 11, and is limited by a limiting structure provided between the water tank 1 and the housing 2, so that the housing 2 has a storage state of being stored inside the water tank 1 and a release state of extending out a certain length from the water tank opening 11 relative to the water tank 1; a main body cavity 210 and a storage cavity 220 are provided inside the housing 2, and a water intake port 212 communicating with the inside of the water tank 1 is provided at the bottom of the main body cavity 210; the nozzle 3 is detachably mounted on the housing 2 and can be received into the storage cavity 220; the water pump 4 is provided inside the main body cavity 210, the water inlet end communicates with the inside of the water tank 1 through the water intake port 212, and the water outlet end communicates with the bottom of the nozzle 3 mounted on the housing 2.

[0070] In this embodiment, the nozzle 3 is detachably mounted on the housing 2. When traveling, it can be disassembled and stored in the storage cavity 220. When the dental irrigator needs to be used, the nozzle 3 is taken out from the storage cavity 220 and mounted on the housing 2; the housing 2 is inserted into the water tank 1 in a liftable and movable manner, so that the volume of the dental irrigator can be conveniently adjusted. When traveling, the housing 2 can be stored inside the water tank 1 to reduce the volume of the dental irrigator, making it convenient to carry. When the dental irrigator needs to be used, the housing 2 can be extended out from the water tank opening 11 to release the space inside the water tank 1, so that a sufficient amount of flushing liquid can be normally contained.

[0071] For the dental irrigator of this embodiment, further, the housing 2 includes a first housing 21, a second housing 22 and a soft pad 23; wherein, a main body cavity 210 is formed inside the first housing 21, a first opening 211 is provided at the top, and a water intake 212 is provided at the bottom; the second housing 22 includes an inner housing 221 adapted to be inserted inside the first housing 21, a mounting table 225 provided at the top of the inner housing 221, and a top cover 222 covering the top of the mounting table 225; a storage cavity 220 is formed inside the inner housing 221, the mounting table 225 is adapted to be covered and mounted on the first opening 211, and is provided with a second opening 2200 communicating with the storage cavity 220, and the top cover 222 is provided with a third opening 2221 communicating with the second opening 2200; the nozzle 3 can be received into the storage cavity 220 through the third opening 2221 and the second opening 2200; the soft pad 23 is openably and closably covered on the third opening 2221.

[0072] For the dental irrigator of this embodiment, further, it further includes a jack 2222, a plug 231 and a soft plug 233; wherein, the jack 2222 is formed on the top cover 222 and is disposed adjacent to the third opening 2221; the plug 231 is formed below the soft pad 23 and can be rotatably mounted in the jack 2222; a limiting flange 232 is formed on the rod body of the plug 231, and the outer diameter of the limiting flange 232 is greater than the inner diameter of the jack 2222. Under the action of an external force, the limiting flange 232 can pass downward through the jack 2222 to axially limit the plug 231; the soft plug 233 is formed below the soft pad 23 and can enter the inside of the second opening 2200 through the third opening 2221 to close the second opening 2200.

[0073] For the dental irrigator of this embodiment, further, the limiting structure includes a guiding plane 213, a first limiting protrusion 214, a second limiting protrusion 215 and a third limiting protrusion 12; there are two guiding planes 213, which are respectively formed on two opposite outer side walls of the first housing 21 and extend in the vertical direction; there are two first limiting protrusions 214, which are respectively formed on the tops of the two guiding planes 213; there are two second limiting protrusions 215, which are respectively formed at the bottoms of the two guiding planes 213 and are respectively vertically opposite to the two first limiting protrusions 214; there are two third limiting protrusions 12, which are respectively formed above the two opposite inner side walls of the water tank 1 and are respectively disposed opposite to the two guiding planes 213; the third limiting protrusion 12 can slide up and down between the first limiting protrusion 214 and the second limiting protrusion 215 and is limited by the first limiting protrusion 214 and the second limiting protrusion 215.

[0074] The water flosser of this embodiment further includes an installation groove 216 and a sealing ring 24. Among them, the installation groove 216 is annular, formed on the outer side wall of the bottom of the first housing 21 and located below the guiding plane 213. The sealing ring 24 is sleeved and installed in the installation groove 216, is in close contact with the inner wall of the water tank 1, and can slide up and down along the inner wall of the water tank 1.

[0075] In this embodiment, the sealing ring 24 can ensure the sealing performance between the water tank 1 and the first housing 21, so that even if the water flosser is placed flat or upside down, there will be no water leakage, thus ensuring the sealing performance and safety of the water flosser during the carrying process.

[0076] The water flosser of this embodiment further includes an installation cylinder 223, an installation port 2220, an installation post 31, a water outlet pipe 43 and a locking structure. Among them, the installation cylinder 223 is arranged on the top of the installation table 225. The installation port 2220 is opened on the top cover 222 and communicates with the installation cylinder 223. The installation post 31 is arranged at the bottom of the nozzle 3 and can be movably inserted into the interior of the installation cylinder 223 through the installation port 2220. The water outlet pipe 43 is located inside the main body cavity 210, one end of which communicates with the installation post 31, and the other end communicates with the water outlet end of the water pump 4. The locking structure is arranged between the installation cylinder 223 and the installation post 31, and has a locking state of locking and fixing the installation post 31 and a release state of not locking the installation post 31.

[0077] For the dental irrigator of this embodiment, further, the locking structure includes a clamping groove 311, a notch 2231, a clamping member 25, and an elastic member 26. Among them, the clamping groove 311 is an annular groove formed on the mounting post 31. The notch 2231 is formed on one side of the mounting cylinder 223. The clamping member 25 has a guiding hole 250, and the clamping member 25 is adapted to be horizontally movably sleeved outside the mounting cylinder 223 through the guiding hole 250. At both ends of the clamping member 25 in the moving direction, a positioning protrusion 251 extending inward toward the guiding hole 250 and a pressing protrusion 252 extending outward away from the guiding hole 250 are respectively provided. The positioning protrusion 251 is adapted to be clamped with the clamping groove 311. The elastic member 26 is installed between the pressing protrusion 252 and the mounting cylinder 223. In the initial state, the elastic member 26 pushes the pressing protrusion 252 outward, so that the positioning protrusion 251 enters the interior of the mounting cylinder 223 through the notch 2231, and further enables the positioning protrusion 251 to be clamped with the clamping groove 311. When an external force is used to press the pressing protrusion 252 inward, the pressing protrusion 252 moves toward the direction close to the mounting cylinder 223, the elastic member 26 is compressed, the positioning protrusion 251 moves synchronously with the pressing protrusion 252, exits the notch 2231, and further enables the positioning protrusion 251 to be disengaged from the clamping groove 311.

[0078] For the dental irrigator of this embodiment, further, a pressing plate 27 can also be provided. The pressing plate 27 covers the clamping member 25 and is detachably and fixedly connected to the mounting table 225, and is used to limit the clamping member 25 and the elastic member 26.

[0079] For the dental irrigator of this embodiment, further, an air vent pipe 2211 communicating with the interior of the inner shell 221 is provided at the bottom of the inner shell 221. An air vent hole 217 communicating with the air vent pipe 2211 is provided at the bottom of the first shell 21. There is an installation gap between the soft pad 23 and the third opening 2221 and the second opening 2200. Or the soft pad 23 can be deformed when a negative pressure is generated in the inner shell 221, so as to generate an air vent gap 200 between the soft pad 23 and the third opening 2221 and between the soft pad 23 and the second opening 2200.

[0080] In this embodiment, an installation gap may be provided between the soft pad 23, the third opening 2221, and the second opening 2200. When negative pressure is generated in the water tank 1 due to the water pump 4 pumping water, external air can enter the storage cavity 220 through the installation gap, and enter the interior of the water tank 1 through the ventilation pipe 2211 and the ventilation holes 217. Alternatively, when negative pressure is generated in the inner shell 221, the soft pad 23 can be deformed, thereby generating a ventilation gap 200 between the soft pad 23 and the third opening 2221, and between the soft pad 23 and the second opening 2200. When negative pressure is generated in the water tank 1 due to the water pump 4 pumping water, the soft pad 23 can be deformed under the action of external air pressure to generate a ventilation gap 200, so that external air enters the storage cavity 220 through the ventilation gap 200, and enters the interior of the water tank 1 through the ventilation pipe 2211 and the ventilation holes 217.

[0081] Furthermore, the oral irrigator of this embodiment further includes a liquid filling port 13 and a liquid filling cap 14. The liquid filling port 13 is opened on the side wall of the water tank 1 for adding flushing liquid into the interior of the water tank 1. The liquid filling cap 14 is pivotally covered on the liquid filling port 13 for closing or opening the liquid filling port 13.

[0082] Furthermore, the oral irrigator of this embodiment further includes a water suction pipe 41. One end of the water suction pipe 41 is installed on the water pump 4, and the other end extends into the interior of the water tank 1. A gravity ball 42 is disposed at the other end of the water suction pipe 41.

[0083] In this embodiment, the gravity ball 42 disposed at the other end of the water suction pipe 41 can keep the suction pipe opening of the water suction pipe 41 always immersed in the flushing liquid, so as to ensure normal water suction.

[0084] The working process of the oral irrigator of this embodiment is as follows:

[0085] When it is necessary to carry the oral irrigator of this embodiment when going out, the nozzle 3 can be detached from the housing 2 and stored in the storage cavity 220, and then the housing 2 is stored inside the water tank 1, so as to facilitate carrying. Specifically:

[0086] Press the pressing bump 252 inward to make the positioning bump 251 withdraw from the notch 2231 and release the clamping connection with the clamping groove 311 on the mounting post 31, and then remove the nozzle 3 from the housing 2; lift the soft pad 23, and insert the nozzle 3 into the storage cavity 220 through the third opening 2221 and the second opening 2200, and then cover the soft pad 23 on the third opening 2221 again;

[0087] After it is determined that the flushing liquid in the water tank 1 is completely drained, press the housing 2 or the water tank 1 so that the third limiting protrusion 12 in the water tank 1 contacts the second limiting protrusion 215 on the first housing 21, so that the housing 2 is stored inside the water tank 1.

[0088] When the oral irrigator of this embodiment needs to be used, take out the nozzle 3 from the storage cavity 220, install it on the housing 2, then pull the housing 2 outwards from the water tank opening 11 to release the space inside the water tank 1, and then sufficient flushing liquid can be filled into the water tank 1 for use. Specifically:

[0089] Lift up the soft pad 23 and take out the nozzle 3 from the inside of the storage cavity 220; press the pressing convex block 252 inwards to make the positioning convex block 251 withdraw from the notch 2231, insert the mounting post 31 on the nozzle 3 into the mounting cylinder 223 through the mounting opening 2220, and then release the pressing convex block 252, so that the pressing convex block 252 moves outwards under the elastic force of the elastic member 26, and drives the positioning convex block 251 into the mounting cylinder 223 through the notch 2231 and is clamped with the card slot 311 on the mounting post 31, thus completing the installation of the nozzle 3;

[0090] Pull the housing 2 or the water tank 1 outwards so that the third limiting protrusion 12 in the water tank 1 contacts the first limiting protrusion 214 on the first housing 21, thereby releasing the space inside the water tank 1. Then, open the liquid adding cover 14 and add sufficient flushing liquid into the water tank 1 from the liquid adding port 13, and then the oral irrigator of this embodiment can be used normally.

[0091] Obviously, the above embodiments are only examples for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or variations can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. And the obvious changes or variations derived therefrom are still within the protection scope of this innovative technical solution.

Claims

1. An oral irrigator, characterized in that, Comprising: A water tank (1) having a water tank opening (11) facing upward; A housing (2) which is inserted into the water tank (1) in a liftable and movable manner through the water tank opening (11) and is limited by a limiting structure provided between the water tank (1) and the housing (2), so that the housing (2) has a storage state stored inside the water tank (1) and a release state extending a certain length outward from the water tank opening (11) relative to the water tank (1); a main body cavity (210) and a storage cavity (220) are provided inside the housing (2), and a water intake port (212) communicating with the inside of the water tank (1) is provided at the bottom of the main body cavity (210); A nozzle (3) which is detachably mounted on the housing (2) and can be received into the storage cavity (220); A water pump (4) which is arranged inside the main body cavity (210), the water inlet end of which communicates with the inside of the water tank (1) through the water intake port (212), and the water outlet end of which communicates with the bottom of the nozzle (3) mounted on the housing (2).

2. The oral irrigator according to claim 1, wherein The housing (2) includes: A first housing (21) having the main body cavity (210) formed inside, a first opening (211) provided at the top, and the water intake port (212) provided at the bottom; A second housing (22) including an inner housing (221) adapted to be inserted inside the first housing (21), a mounting table (225) provided at the top of the inner housing (221), and a top cover (222) covering the top of the mounting table (225); the storage cavity (220) is formed inside the inner housing (221), the mounting table (225) is adapted to be covered and mounted on the first opening (211), and a second opening (2200) communicating with the storage cavity (220) is provided, and a third opening (2221) communicating with the second opening (2200) is provided on the top cover (222); the nozzle (3) can be received into the storage cavity (220) through the third opening (2221) and the second opening (2200); A soft pad (23) which is openably and closably covered on the third opening (2221).

3. The oral irrigator according to claim 2, wherein It further includes: A jack (2222) formed on the top cover (222) and adjacent to the third opening (2221); A plug rod (231) formed below the soft pad (23) and rotatably mounted in the jack (2222); a limiting flange (232) is formed on the rod body of the plug rod (231), the outer diameter of the limiting flange (232) is larger than the inner diameter of the jack (2222), and under the action of an external force, the limiting flange (232) can pass through the jack (2222) downward to axially limit the plug rod (231); A soft plug (233) formed below the soft pad (23) and capable of entering the second opening (2200) through the third opening (2221) to close the second opening (2200).

4. The dental irrigator according to claim 2, wherein The limiting structure includes: There are two guiding planes (213), which are respectively formed on two opposite outer side walls of the first housing (21) and extend in the vertical direction; There are two first limiting protrusions (214), which are respectively formed on the tops of the two guiding planes (213); There are two second limiting protrusions (215), which are respectively formed on the bottoms of the two guiding planes (213) and are respectively vertically opposite to the two first limiting protrusions (214); There are two third limiting protrusions (12), which are respectively formed above the two opposite inner side walls of the water tank (1) and are respectively arranged opposite to the two guiding planes (213); The third limiting protrusion (12) can slide up and down between the first limiting protrusion (214) and the second limiting protrusion (215) and is limited by the first limiting protrusion (214) and the second limiting protrusion (215).

5. The oral irrigator according to claim 4, wherein, It further includes: An installation groove (216), which is annular, is formed on the outer side wall of the bottom of the first housing (21) and is located below the guiding plane (213); A sealing ring (24) is sleeved and installed in the installation groove (216), is in close contact with the inner wall of the water tank (1), and can slide up and down along the inner wall of the water tank (1).

6. The oral irrigator according to claim 2, wherein, It further includes: An installation cylinder (223) is arranged on the top of the installation platform (225); An installation port (2220) is opened on the top cover (222) and is communicated with the installation cylinder (223); An installation column (31) is arranged at the bottom of the nozzle (3) and can be movably inserted into the interior of the installation cylinder (223) through the installation port (2220); A water outlet pipe (43) is located inside the main cavity (210), one end of which is communicated with the installation column (31), and the other end is communicated with the water outlet end of the water pump (4); A locking structure is arranged between the installation cylinder (223) and the installation column (31), and has a locking state of locking and fixing the installation column (31) and a release state of not locking the installation column (31).

7. The oral irrigator according to claim 6, wherein The locking structure includes: A clamping groove (311), which is an annular groove opened on the installation column (31); A notch (2231) is opened on one side of the installation cylinder (223); A clamping member (25) has a guiding hole (250), and the clamping member (25) is adapted to be horizontally movably sleeved outside the installation cylinder (223) through the guiding hole (250); two ends of the clamping member (25) in the moving direction are respectively provided with a positioning convex block (251) extending inwards towards the guiding hole (250) and a pressing convex block (252) extending outwards away from the guiding hole (250); the positioning convex block (251) is adapted to be clamped with the clamping groove (311); An elastic member (26) is installed between the pressing convex block (252) and the installation cylinder (223); In the initial state, the elastic member (26) pushes the pressing bump (252) outwards, so that the positioning bump (251) enters the interior of the mounting cylinder (223) through the notch (2231), and further enables the positioning bump (251) to be engaged with the card slot (311); When an external force is used to press the pressing bump (252) inwards, the pressing bump (252) moves towards the mounting cylinder (223), the elastic member (26) is compressed, the positioning bump (251) moves synchronously with the pressing bump (252), exits the notch (2231), and further enables the positioning bump (251) to be disengaged from the card slot (311).

8. The oral irrigator according to claim 3, wherein, A ventilation pipe (2211) communicating with the interior of the inner shell (221) is provided at the bottom of the inner shell (221); A ventilation hole (217) communicating with the ventilation pipe (2211) is provided at the bottom of the first housing (21); There is an installation gap between the soft pad (23) and the third opening (2221) and the second opening (2200); or the soft pad (23) can be deformed when a negative pressure is generated in the inner shell (221) to generate a ventilation gap (200) between the soft pad (23) and the third opening (2221), and between the soft pad (23) and the second opening (2200).

9. The oral irrigator according to claim 1, wherein, It further includes: A liquid filling port (13) is opened on the side wall of the water tank (1) for adding flushing liquid into the interior of the water tank (1); A liquid filling cap (14) is detachably covered on the liquid filling port (13) for closing or opening the liquid filling port (13).

10. The oral irrigator according to claim 1, wherein It further includes: A water suction pipe (41) has one end installed on the water pump (4) and the other end extending into the interior of the water tank (1); A gravity ball (42) is provided at the other end of the water suction pipe (41).

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