Water pick

Abstract

The utility model discloses a water pick. The water pick comprises a main machine, a water drawing pipe and a water tank, the host is provided with a water inlet; the water drawing pipe is connected with the water inlet; the water tank is connected with the end, provided with the water inlet, of the main machine, the water drawing pipe is inserted into the water tank which is used for containing liquid, and the main machine is used for drawing liquid from the water tank through the water drawing pipe. The end, away from the main machine, of the water tank is sunken in the direction away from the main machine. The bottom of the water tank is downwards provided with a concave surface, and under the action of gravity, residual liquid in the water tank gathers towards the lowest potential energy position, so that a higher liquid level is formed near the lowest potential energy position to immerse the end part of the water drawing pipe, and therefore, the residual liquid can be fully utilized, the use efficiency is improved, and residues are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of toothbrushes, in particular to a tooth flusher. Background Art

[0002] An oral irrigator is a tool for cleaning teeth. In existing oral irrigators, a considerable amount of liquid often remains at the bottom of the water tank. Since the liquid level is very shallow, it is difficult to suck out and use, resulting in low utilization and waste of resources. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a water flosser to improve the problem of residual liquid at the bottom of a water tank.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0005] A water flosser comprises a main unit, a water pumping pipe and a water tank; the main unit is provided with a water inlet; the water pumping pipe is connected to the water inlet; the water tank is connected to one end of the main unit provided with the water inlet, the water pumping pipe is inserted into the water tank, the water tank is used to hold liquid, and the main unit is used to extract liquid from the water tank through the water pumping pipe; wherein the end of the water tank away from the main unit is recessed in a direction away from the main unit.

[0006] As one implementation manner, in a direction away from the main unit, the cross-sectional area of ​​the recessed portion of the water tank gradually decreases.

[0007] As one implementation manner, the distance between the sunken part of the water tank and the plane where the bottom of the main unit is located is L, L1≤L≤L2, and the sunken part of the water tank has a point A at a distance of L2 from the main unit; wherein, on a plane perpendicular to the height direction of the water tank, the projection of the water inlet coincides with the projection of the point A.

[0008] As one embodiment, the water flosser further includes a gravity ball, the gravity ball is connected to the end of the water pipe away from the main unit, and the concave portion of the water tank is configured to be spherical.

[0009] As one of the implementation modes, the distance between the concave part of the water tank and the plane where the bottom of the main unit is located is L, L1≤L≤L2, the sum of the length of the water suction pipe in the water tank and the length of the gravity ball is L3, 0≤L3-L2≤5 mm.

[0010] As one embodiment, the water tank includes a bottle body and a bottom cover, the bottle body is connected to the end of the host provided with the water inlet, the bottom cover is connected to the end of the bottle body away from the host, and the bottom cover is recessed in a direction away from the host.

[0011] As one embodiment, the bottom cover includes a deformation portion and a supporting portion that are interconnected, the outer side surface of the supporting portion is in contact with the inner side surface of the bottle body, and the deformation portion is recessed in a direction away from the main unit; wherein, on a plane parallel to the height direction of the water tank, the projection of the supporting portion surrounds the projection of the deformation portion.

[0012] As one implementation manner, a step is provided on the outer side surface of the support portion, and the end of the bottle body overlaps the step.

[0013] As one implementation manner, the water inlet is arranged at the center of the end of the main unit close to the water tank, and the outer contour of the main unit is symmetrical about the center of the water inlet.

[0014] As one embodiment, the water flosser includes a nozzle, and a socket is provided at one end of the main unit facing the water tank, and the nozzle can be movably inserted into the socket and accommodated in the water tank; wherein, the free end of the nozzle is inclined relative to the fixed end of the nozzle, and when the inclination direction of the free end of the nozzle is toward the recessed direction of the water tank, the free end of the nozzle is spaced apart from the recessed part of the water tank.

[0015] As one implementation manner, the distance between the socket and the inner wall of the water tank is L4, and L4≤5 mm.

[0016] As one embodiment, the water inlet is arranged at the end of the main unit close to the water tank, a water pump and a connecting pipe are arranged inside the main unit, and the water pump and the water inlet are arranged at intervals;

[0017] The length of the host in the width direction is smaller than the length of the host in the length direction. The water inlet of the water pump is located on one side of the width direction of the host. The connecting pipe connects the water inlet and the water inlet.

[0018] The beneficial effect of the utility model is that a concave surface is formed downward at the bottom of the water tank, the central part of the concave surface is farther away from the main machine, and the edge part of the concave surface is closer to the main machine. Under the action of gravity, the residual liquid in the water tank gathers to the lowest potential energy point, thereby forming a higher liquid level near the lowest potential energy point, and then immersing the end of the water drawing pipe. In this way, the residual liquid can be fully utilized, thereby improving the use efficiency and reducing the residue. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram showing the assembly structure of the oral flushing device according to an embodiment of the utility model is shown;

[0020] Figure 2A schematic diagram showing the exploded structure of the water flosser according to an embodiment of the utility model is shown;

[0021] Figure 3 A schematic diagram showing the cross-sectional structure of the water flosser according to an embodiment of the utility model is shown;

[0022] Figure 4 The utility model embodiment is shown Figure 3 A schematic diagram of the local enlarged structure of the middle B area;

[0023] Figure 5 The utility model embodiment is shown Figure 3 Schematic diagram of the local enlarged structure of the C area in the middle.

[0024] Description of reference numerals:

[0025] Main unit 10, water inlet 12, socket 14, water pump 16, connecting pipe 18, water inlet 161

[0026] Water pipe 20, water tank 30, bottle body 31, bottom cover 32, deformation part 321, support part 322

[0027] The step 323 , the avoidance groove 324 , the gravity ball 40 , and the nozzle 50 . DETAILED DESCRIPTION

[0028] In the present invention, the terms "disposed", "provided with", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] The orientation or position relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the orientation or position relationship shown in the drawings and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0030] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0031] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those skilled in the art, the specific meanings of these terms in this utility model can be understood according to specific circumstances.

[0032] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0033] The utility model proposes a water flosser, which includes a main unit 10, a water drawing pipe 20 and a water tank 30; the main unit 10 is provided with a water inlet 12; the water drawing pipe 20 is connected to the water inlet 12; the water tank 30 is connected to one end of the main unit 10 provided with the water inlet 12, the water drawing pipe 20 is inserted into the water tank 30, the water tank 30 is used to hold liquid, and the main unit 10 is used to extract liquid from the water tank 30 through the water drawing pipe 20; wherein the end of the water tank 30 away from the main unit 10 is recessed in a direction away from the main unit 10.

[0034] like Figure 1 and Figure 3 As shown, it is worth noting that in the present application, the host 10 is a device formed by combining multiple functional components. The host 10 is provided with a power supply and a power part. The power supply can be a disposable battery, a rechargeable battery, a charger, etc., and the power part can be a motor, an electric motor, a water pump 16, an air pump, etc. The water inlet 12 is provided at the lower part of the host 10. Under the action of the power supply and the power part, the liquid in the water tank 30 is sucked into the host 10 through the water suction pipe 20 and the water inlet 12.

[0035] Taking the water pump 16 as an example, when the water pump 16 is started, the air inside the host 10 is sucked away, and a pressure difference is formed between the host 10 and the water tank 30. Under the action of atmospheric pressure, the liquid inside the water tank 30 is pressed into the water suction pipe 20, passes through the water inlet 12, and finally enters the user's mouth.

[0036] The water-drawing pipe 20 is made of flexible material, such as rubber, silicone, flexible plastic, etc. One end of the water-drawing pipe 20 is connected to the water inlet 12 , and the other end is immersed in liquid. The liquid enters the water inlet 12 of the host 10 through the water-drawing pipe 20 .

[0037] The water tank 30 can be made of plastic, which is easy to manufacture and lightweight. The water tank 30 and the host 10 can be designed as an assembly structure to facilitate the assembly of liquids and the cleaning of parts. The connection methods between the host 10 and the water tank 30 include snap connection, threaded connection, spring connection, etc. The host 10 or the water tank 30 can also be sold separately as accessories. The water tank 30 and the host 10 can also be designed as an integrated machine.

[0038] The liquid in the water tank 30 can be pure water, a medicine, or a cleaning solution formed by a mixture of pure water and a medicine. There are two configurations and installations of the cleaning solution. Specifically, in the first configuration, the medicine is mixed with pure water to form a cleaning solution, and the cleaning solution is poured into the water tank 30. The cleaning solution enters the main unit 10 through the water pipe 20 and the water inlet 12, and finally reaches the user's oral cavity. This method is often used in home life.

[0039] In the second configuration, a medicine bottle is provided in the main unit 10, and medicine and pure water are respectively loaded into the medicine bottle and the water tank 30. Before use, the medicine and pure water are mixed inside the main unit 10 by the power part on the main unit 10 to form a cleaning solution, which is then used. This method is often used for traveling. Different configuration methods correspond to different usage scenarios, which improves the adaptability of the product.

[0040] After the existing water flosser is used several times, the liquid level in the water tank 30 is lower than the end of the water pipe 20, which is easy to cause residue. Figure 3 In the present application, a concave surface is formed downward at the bottom of the water tank 30, the center of the concave surface is farther away from the main unit 10, and the edge of the concave surface is closer to the main unit 10. Under the action of gravity, the residual liquid in the water tank 30 gathers toward the lowest potential energy point, thereby forming a higher liquid level near the lowest potential energy point, thereby submerging the end of the water drawing pipe 20. In this way, the residual liquid can be fully utilized, thereby improving the use efficiency and reducing the residue.

[0041] As one embodiment, in the direction away from the main unit 10, the cross-sectional area of ​​the concave portion of the water tank 30 gradually decreases. Figure 5 When the water flosser is placed vertically, the depression in the middle of the water tank 30 is deeper than that in the edge, which is conducive to the liquid gathering from the edge to the center.

[0042] In order to ensure the smooth flow of liquid, the concave part of the water tank 30 can be made smooth, so it is a better choice to design the bottom of the water tank 30 into a bowl or pot shape (with a spherical shape, where the spherical shape can be a partial curved surface of a standard sphere or a smoothly transitioned arc surface).

[0043] Specifically, observing from top to bottom, the potential energy gradually decreases, and the cross-sectional area of ​​the recessed part of the water tank 30 gradually becomes smaller. The remaining liquid eventually gathers near the lowest point of potential energy to form a higher liquid level. In this embodiment, the recessed part is arc-shaped. When the liquid in the water tank 30 is low to the edge of the arc, the liquid converges to the bottom to form a higher liquid level, which is beneficial for the water pumping pipe 20 to absorb the liquid and improve the efficiency of liquid use.

[0044] As one of the embodiments, the distance between the recessed portion of the water tank 30 and the plane where the bottom of the main unit 10 is located is L, L1≤L≤L2, and the recessed portion of the water tank 30 has a point A at a distance of L2 from the plane where the bottom of the main unit 10 is located; wherein, on a plane perpendicular to the height direction of the water tank 30, the projection of the water inlet 12 coincides with the projection at A.

[0045] like Figure 4 As shown, more specifically, in this embodiment, the distance between the plane where the water inlet 12 is located and the plane where the edge of the recessed part is located is L1, which is the highest point of the recessed part; the distance between the plane where the water inlet 12 is located and the plane where the bottom of the recessed part is located is L2, so the distance between the recessed part of the water tank 30 and the plane L where the bottom of the main unit 10 is located is between L1 and L2.

[0046] When the projection of the water inlet 12 coincides with the projection at A, that is, when the oral irrigator is placed vertically, the projection of the water inlet 12 is exactly opposite to the point A. In this way, the straight-line distance between the water inlet 12 and the point A is the shortest, and thus the length of the water drawing pipe 20 is the shortest. The distances from the water drawing pipe 20 to the left and right ends of the water tank 30 are substantially the same, and there will not be excessive redundancy of the water drawing pipe 20 in the water tank 30.

[0047] As one of the embodiments, the water flosser also includes a gravity ball 40, which is connected to the end of the water supply pipe 20 away from the main unit 10. The recessed portion of the water tank 30 is configured into a spherical shape, which can be a partial curved surface of a standard sphere or a smoothly transitioned arc surface.

[0048] Continue to combine Figure 4 The water-drawing tube 20 is often made of materials such as rubber and flexible plugging materials, which are light and easy to bend. In actual use, the water flosser is repeatedly placed horizontally and vertically, which may cause misalignment and deviation between the lower end of the water-drawing tube 20 and the lowest potential energy point of the water tank 30, causing the end of the water-drawing tube 20 to be exposed above the liquid surface.

[0049] It is understandable that in order to limit the activity space of the lower end of the water-drawing pipe 20, a gravity ball 40 is designed at the lower end of the water-drawing pipe 20. The gravity ball 40 can be made into a sphere, a column or a polyhedron; the material of the gravity ball 40 includes plastic, rubber, metal, etc.; the gravity ball 40 and the water-drawing pipe 20 can be integrally formed or assembled.

[0050] The overall density of the gravity ball 40 is greater than the density of the liquid. When there is liquid, it can be ensured that it is always immersed in the liquid, and under the action of gravity, the gravity ball 40 is always at the lowest potential energy. Combined with the concave structure of the water tank 30 mentioned above, it can be ensured that the gravity ball 40 is located near the accumulated liquid, which is conducive to the water pipe 20 to absorb the liquid.

[0051] More specifically, the gravity ball 40 can be designed as a hollow structure with multiple holes on its surface. The gravity ball 40 is connected to the connection point of the water drawing pipe 20. In this way, no matter whether the water flosser is placed horizontally, vertically or diagonally, under the action of gravity, the gravity ball 40 is always located at the lowest potential energy point and close to the residual liquid, so that the host 10 can absorb liquid as much as possible, thereby improving the utilization rate of the liquid.

[0052] In this embodiment, the water drawing pipe 20 and the gravity ball 40 are both made of rubber material and are assembled into a shape. The gravity ball 40 is designed as a spherical cage structure. A metal bell is added inside the gravity ball 40, which can not only increase the overall density of the gravity ball 40, but also judge the liquid level inside the water tank 30 by the sound of the bell, so that the user can know the remaining amount of liquid in the water tank 30.

[0053] Of course, the user can also shake the water tank 30 and judge the remaining amount of liquid by the sound of the gravity ball 40 hitting the water tank 30. The gravity ball 40 moves relative to the water tank 30 due to inertia. When the water tank 30 changes its direction of movement, the gravity ball 40 continues to move under the action of inertia and hits the water tank 30. If the sound of the gravity ball 40 hitting the water tank 30 is crisp, the remaining amount of liquid is exhausted; if the sound of the gravity ball 40 hitting the water tank 30 is dull, the remaining amount of liquid is sufficient.

[0054] Combination Figure 2 , the concave part of the water tank 30 corresponding to the gravity ball 40 is designed to be spherical. Whether it is a partial curved surface of a standard ball or a smooth curved surface, there is a characteristic that the area at the lowest potential energy is very small (ideally a point). When the water flosser is in use, the user will tilt the water flosser toward the human body, and the gravity ball will move along the bottom of the spherical surface under the action of gravity. The gravity ball ensures that the water inlet is always at the lowest point, which can reduce residual water. The spherical shape has a curvature, and the contact surface area of ​​the gravity ball 40 and the concave part is small, which makes it easy for the gravity ball 40 to roll to the lowest potential energy point, which is conducive to the full absorption of liquid.

[0055] As one of the implementation modes, the distance between the concave part of the water tank 30 and the plane where the bottom of the main unit 10 is located is L, L1≤L≤L2, the sum of the length of the water pipe 20 in the water tank 30 and the length of the gravity ball 40 is L3, 0≤L3-L2≤5 mm.

[0056] The total length of the water-drawing pipe 20 and the gravity ball 40 in the water tank 30 is L3. The difference between L3 and L2 is the so-called redundant section. The setting of the redundant section can ensure that the gravity ball 40 can roll to the point with the lowest potential energy, thereby absorbing the liquid there and improving the efficiency of liquid use. Specifically, the value of the redundant section can be selected from 1mm, 2mm, 3mm, 4mm, and 5mm. If it exceeds 5mm, entanglement is likely to occur.

[0057] As one embodiment, the water tank 30 includes a bottle body 31 and a bottom cover 32. The bottle body 31 is connected to one end of the host 10 where the water inlet 12 is provided, and the bottom cover 32 is connected to the end of the bottle body 31 away from the host 10. The bottom cover 32 is recessed in a direction away from the host 10.

[0058] Combination Figure 4 The bottle body 31 is used to hold liquid, and the bottom cover 32 is used to support and fix the bottle body 31. The upper part of the bottle body 31 is connected to the lower part of the host 10, and the connection method includes but is not limited to a snap connection, a threaded connection, and an elastic connection. In this embodiment, the bottle body 31 and the bottom cover 32 are produced separately and then assembled. In other embodiments, the bottle body 31 and the bottom cover 32 can be integrally formed.

[0059] The lowermost end of the bottle body 31 forms a curved surface, and the upper end of the bottom cover 32 is also designed to be a curved surface accordingly, so that the lower end of the bottle body 31 and the bottom cover 32 are easily engaged with each other.

[0060] As one of the embodiments, the bottom cover 32 includes a deformation portion 321 and a support portion 322 that are interconnected, the outer side surface of the support portion 322 is in contact with the inner side surface of the bottle body 31, and the deformation portion 321 is recessed in a direction away from the main unit 10; wherein, on a plane parallel to the height direction of the water tank 30, the projection of the support portion 322 surrounds the projection of the deformation portion 321.

[0061] Furthermore, combined with Figure 5 The edge and the bottom end of the bottom cover 32 serve as a support portion 322, presenting a columnar structure that is narrow at the top and wide at the bottom. The support portion 322 encloses a avoidance groove 324 for placing the water tank 30. This design increases the support area, which is beneficial to the support and fixation of the bottle body 31; the middle part of the bottom cover 32 serves as a deformation portion 321 that fits the bottle body 31, and this part can be roughened to further improve the stability of the water tank 30.

[0062] Since the support portion 322 is arranged around the deformation portion 321, if the light is projected from a direction perpendicular to the height of the water tank 30, it will be found that the projection of the support portion 322 surrounds the projection of the deformation portion 321, that is, the deformation portion 321 is lower than the support portion 322. This structure ensures that when the water tank 30 is placed on the table, the deformation portion 321 will not contact the table, and only the support portion 322 will contact the table, so that the water tank 30 is supported from all sides, which is conducive to the stable placement of the water tank 30 and the entire water flosser.

[0063] As one implementation manner, a step 323 is provided on the outer side surface of the support portion 322 , and the end of the bottle body 31 overlaps the step 323 .

[0064] In this embodiment, the bottle body 31 and the bottom cover 32 are produced separately and then assembled. In order to further maintain the stability between the bottle body 31 and the bottom cover 32, a step 323 is provided on the outer periphery of the support portion 322. The end face of the step 323 is flat and parallel to the plane where the bottom of the main unit 10 is located. The end of the bottle body 31 abuts against the step 323, which limits the recessed part of the bottle body 31. When the oral irrigator is placed vertically, the supporting force of the bottom cover 32 on the bottle body 31 is equal to and opposite to the gravity, and the placement effect is stable.

[0065] As one implementation manner, the water inlet 12 is disposed at the center of the end of the main unit 10 close to the water tank 30 , and the outer contour of the main unit 10 is symmetrical about the center of the water inlet 12 .

[0066] Combination Figure 3 Specifically, in this embodiment, the main body 10 is cylindrical or prismatic, the water inlet 12 is arranged on the axis of the main body, and the water tank 30 is symmetrical along the axis. The symmetrical structure is convenient for manufacturing. The water drawing pipe 20 is connected to the water inlet 12. Under the action of gravity, the water drawing pipe 20 is at a position with low potential energy, and can absorb the liquid in the water tank 30 that is farthest from the water inlet 12, which is conducive to full utilization of the liquid in the water tank 30.

[0067] As one embodiment, the water flosser includes a nozzle 50, and a socket 14 is provided at one end of the main unit 10 facing the water tank 30. The nozzle 50 can be movably inserted into the socket 14 and accommodated in the water tank 30; wherein, the free end of the nozzle 50 is inclined relative to the fixed end of the nozzle 50, and when the inclination direction of the free end of the nozzle 50 is toward the recessed direction of the water tank 30, the free end of the nozzle 50 is spaced apart from the recessed part of the water tank 30.

[0068] The free end of the nozzle 50 at the lower end is inclined relative to the fixed end thereof, and the inclination angle may range from 10° to 30°, such as 10°, 15°, 20°, 25°, 30°, etc.

[0069] As a tool for cleaning teeth, it is understandable that the nozzle 50 is taken out and used only when it is needed to prevent the nozzle 50 from being contaminated by dust. When the nozzle 50 is used, it only needs to be cleaned and plugged into the socket 14 to be stored in the water tank 30. The nozzle 50 and the socket 14 are in a movable connection state, so the nozzle 50 can rotate freely relative to the socket 14. Under normal circumstances, the nozzle 50 will be rotated until the inclination direction of its free end is toward the concave direction of the water tank 30, so that the space of the concave part of the water tank 30 can be maximized without contacting the nozzle 50 and the water tank 30. The free end of the nozzle 50 does not contact the bottom of the water tank 30, but there is a distance, which can prevent the nozzle 50 from contacting the bottom of the water tank 30 and causing contamination.

[0070] As one implementation manner, the distance between the socket 14 and the inner wall of the water tank 30 is L4, and L4≤5 mm.

[0071] Combination Figure 4 In order to avoid entanglement between the nozzle 50 and the water drawing pipe 20, the position of the socket 14 is as far away from the water inlet 12 as possible. According to the test, under the premise of ensuring the use effect of the nozzle 50, it is a better choice to control the distance between the socket 14 and the inner wall of the water tank 30 within 5mm. The specific spacing value can be 1mm, 2mm, 3mm, 4mm, 5mm, etc.

[0072] As one of the embodiments, the water inlet 12 is arranged at the end of the main unit 10 close to the water tank 30, and a water pump 16 and a connecting pipe 18 are arranged inside the main unit 10, and the water pump 16 and the water inlet 12 are arranged at intervals; the length of the main unit 10 in its width direction is smaller than the length of the main unit 10 in its length direction, the water inlet 161 of the water pump 16 is located on one side in the width direction of the main unit 10, and the connecting pipe 18 connects the water inlet 12 and the water inlet 161.

[0073] Combination Figure 2 and Figure 3 In this embodiment, the power component adopts a water pump 16, the length direction of the main unit 10 is up and down, and the width direction is horizontal. The various components are installed along the length direction of the main unit 10, which is beneficial to reducing the cross-sectional area and making it easier for users to grab and hold the water flosser.

[0074] The lower end of the nozzle 50 is connected to the water inlet 161, the lower end of the connecting pipe 18 is connected to the water inlet 12, and the upper end of the connecting pipe 18 is connected to the water inlet 161. Driven by the water pump 16, the liquid in the water tank 30 reaches the connecting pipe 18 through the water inlet 12, reaches the nozzle 50 through the water inlet 161, and finally reaches the user's mouth to achieve oral cleaning.

[0075] The above is only a specific implementation method of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A water flosser, characterized in that: include: A main machine is provided with a water inlet; A water drawing pipe connected to the water inlet; A water tank connected to one end of the main unit provided with the water inlet, the water-drawing pipe being inserted into the water tank, the water tank being used to hold liquid, and the main unit being used to extract liquid from the water tank through the water-drawing pipe; Wherein, the end of the water tank away from the main unit is recessed in a direction away from the main unit.

2. The oral rinser according to claim 1, characterized in that: In a direction away from the main unit, the cross-sectional area of ​​the recessed portion of the water tank gradually decreases.

3. The oral rinser according to claim 2, characterized in that: The distance between the sunken part of the water tank and the plane where the bottom of the main unit is located is L, L1≤L≤L2, and the sunken part of the water tank has a point A at a distance of L2 from the main unit; wherein, on a plane perpendicular to the height direction of the water tank, the projection of the water inlet coincides with the projection of the point A.

4. The oral rinser according to claim 2, characterized in that: The water flosser also includes a gravity ball, which is connected to the end of the water pumping pipe away from the main unit, and the concave part of the water tank is configured to be spherical.

5. The oral rinser according to claim 4, characterized in that: The distance between the concave part of the water tank and the plane where the bottom of the main machine is located is L, L1≤L≤L2, the sum of the length of the water-drawing pipe in the water tank and the length of the gravity ball is L3, 0≤L3-L2≤5 mm.

6. The oral rinser according to claim 1, characterized in that: The water tank comprises a bottle body and a bottom cover, wherein the bottle body is connected to an end of the host provided with the water inlet, the bottom cover is connected to an end of the bottle body away from the host, and the bottom cover is recessed in a direction away from the host.

7. The oral rinser according to claim 6, characterized in that: The bottom cover includes a deformation portion and a supporting portion that are interconnected, the outer side surface of the supporting portion is in contact with the inner side surface of the bottle body, and the deformation portion is recessed in a direction away from the host; wherein, on a plane parallel to the height direction of the water tank, the projection of the supporting portion surrounds the projection of the deformation portion.

8. The oral rinser according to claim 7, characterized in that: The outer side surface of the support portion is provided with a step, and the end of the bottle body is overlapped on the step.

9. The oral rinser according to claim 1, characterized in that: The water inlet is arranged at the center of the end of the main unit close to the water tank, and the outer contour of the main unit is symmetrical about the center of the water inlet.

10. The oral rinser according to claim 2, characterized in that: The water flosser includes a nozzle, and a socket is provided at one end of the main unit facing the water tank. The nozzle can be movably inserted into the socket and accommodated in the water tank; wherein the free end of the nozzle is inclined relative to the fixed end of the nozzle, and when the inclination direction of the free end of the nozzle is toward the recessed direction of the water tank, the free end of the nozzle is spaced apart from the recessed part of the water tank.

11. The oral rinser according to claim 10, characterized in that: The distance between the socket and the inner wall of the water tank is L4, and L4≤5 mm.

12. The oral rinser according to claim 1, characterized in that: The water inlet is arranged at the end of the main unit close to the water tank, a water pump and a connecting pipe are arranged inside the main unit, and the water pump and the water inlet are arranged at intervals; The length of the host in the width direction is smaller than the length of the host in the length direction. The water inlet of the water pump is located on one side of the width direction of the host. The connecting pipe connects the water inlet and the water inlet.

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