Water pick

Abstract

The oral irrigator comprises a main machine and a water tank, the main machine comprises a holding section and a stretching section which are connected with each other in the longitudinal direction of the main machine, the water tank is opened towards the main machine to form an opening part, the stretching section stretches into the water tank from the opening part, and a water storage space is defined by the stretching section and the water tank; in the longitudinal direction of the main machine, at least part of the cross section area of the water tank is gradually increased in the direction away from the main machine. Compared with the prior art, the water tank is in a big-end-down shape in the longitudinal direction of the main machine, the cross section area of the end, close to the main machine, of the water tank is small, and therefore when a user holds the water tank, the water tank with the small cross section reduces the influence on the hand holding posture of the user; the cross section area of the end, away from the main machine, of the water tank is large and tends to be gradually increased, so that the capacity of the water storage space is increased, the water tank can conveniently store more clean water, and the service time of the oral irrigator is prolonged.

Description

Technical Field

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

[0002] An oral irrigator is a tool for cleaning teeth. It uses high-pressure water to clean teeth, gums, and the area between teeth. The working principle of an oral irrigator is to use a pump to pressurize the water in the water tank to form a high-pressure water flow that is ejected from the nozzle. In the prior art, in order to increase the capacity of the water tank, the cross-sectional area of ​​the water tank is designed to be larger, which results in the user only being able to hold the body of the device when holding it, and the larger water tank below will hinder the user's handholding. Therefore, in order to make the user hold it comfortably, the overall size of the body has to be increased to match the volume of the water tank for easy holding. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a water flosser that can effectively prevent the volume of the water tank from affecting the user's grip.

[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 and a water tank, wherein the main unit comprises a gripping section and an insertion section which are interconnected in the longitudinal direction thereof, the water tank is open toward the main unit to form an opening, the insertion section extends from the opening into the water tank and defines a water storage space together with the water tank; wherein, along the longitudinal direction of the main unit, the cross-sectional area of ​​at least part of the water tank tends to gradually increase in the direction away from the main unit.

[0006] As one embodiment, the water tank includes a bottom and a side, the side is connected to the bottom and extends in a direction close to the main unit to form the opening, along the longitudinal direction of the main unit, the cross-sectional area of ​​at least part of the side tends to gradually increase in a direction away from the main unit, and the outer surface of the side presents a continuous smooth curve from the bottom to the opening.

[0007] As one embodiment, the side portion includes a first portion, a second portion, and a third portion connected in sequence along the longitudinal direction of the main unit, the first portion is open toward the main unit to form the opening portion, and the third portion is connected to the bottom portion;

[0008] Among them, along the longitudinal direction of the main unit, the cross-sectional area of ​​the first part presents a constant trend, the cross-sectional area of ​​the second part presents a gradually increasing trend in the direction away from the first part, and the cross-sectional area of ​​the third part presents a constant trend.

[0009] As one embodiment, the cross-section of the first part is prismatic, circular or elliptical, the cross-section of the second part is prismatic, circular or elliptical, the cross-section of the third part is circular, and the first part, the second part and the third part are connected in sequence with smooth transition.

[0010] As one of the embodiments, the outer diameter of the holding section is larger than the outer diameter of the insertion section, and a step portion is formed at the connection between the holding section and the insertion end. When the insertion section is inserted into the water tank, the step portion abuts against the end of the water tank, and the insertion section is detachably connected to the water tank.

[0011] As one of the implementation modes, when the extending section is extended into the water tank, the outer surface of the holding section is flush with the outer surface of the water tank, and the holding section and the water tank form a smooth curved transition.

[0012] As one of the implementation modes, the host further includes a button portion, the button portion is connected to the holding section, and the length between the button portion and the water tank is set to L1mm, 70<L1<130.

[0013] As one embodiment, the holding section has a first direction and a second direction perpendicular to each other in the lateral direction, the length of the holding section in the first direction is greater than the length in the second direction, the holding section has a first side surface in the first direction, and the holding section has a second side surface in the second direction; wherein the button portion is arranged on the second side surface.

[0014] As one embodiment, the main unit further includes an unlocking member, which is disposed on the second side and is respectively connected to the insertion section and the water tank, and the insertion section is detachably connected to the water tank via the unlocking member.

[0015] As one implementation manner, the first side surface and the second side surface are connected in a smooth transition.

[0016] As one embodiment, the host further includes a charging interface, and the charging interface and the unlocking member are arranged at one end of the holding section close to the water tank.

[0017] As one implementation manner, when the extending section extends into the water tank, the length between the bottom surface of the extending section and the opening is L2 mm, and L2>7.

[0018] As one embodiment, the main unit includes a sealing member, the extending section is provided with a sealing groove, the sealing member is arranged in the sealing groove and abuts against the extending section and the water tank respectively.

[0019] As one implementation manner, a deformation groove is provided on a side of the sealing member facing the water tank.

[0020] The beneficial effect of the utility model is that: the embodiment of the present application provides a water flosser, including a main unit and a water tank, the main unit includes a gripping section and an insertion section connected to each other in the longitudinal direction thereof, the water tank is open toward the main unit to form an opening, the insertion section extends from the opening into the water tank, and defines a water storage space with the water tank; wherein, along the longitudinal direction of the main unit, at least part of the cross-sectional area of ​​the water tank gradually increases in the direction away from the main unit. Compared with the prior art, along the longitudinal direction of the main unit, the water tank of the present application presents a shape of being small at the top and large at the bottom, and the cross-sectional area of ​​the end of the water tank close to the main unit is smaller, so that when the user holds it, the water tank with a smaller cross-sectional area reduces the influence on the user's hand holding posture; and the cross-sectional area of ​​the end of the water tank away from the main unit is larger and gradually increases, so that the arrangement increases the capacity of the water storage space, which is convenient for the water tank to store more clean water and improve the use time of the water flosser. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic structural diagram of a dental flosser according to an embodiment of the utility model is shown;

[0022] Figure 2 A cross-sectional schematic diagram of a water flosser according to an embodiment of the utility model is shown;

[0023] Figure 3 A front view of a dental flosser according to an embodiment of the utility model is shown;

[0024] Figure 4 A schematic diagram of the transverse structure of a water flosser according to an embodiment of the utility model is shown;

[0025] Figure 5 Another schematic structural diagram of a dental flosser according to an embodiment of the utility model is shown;

[0026] Figure 6 for Figure 2 The enlarged view of point A in the middle;

[0027] Figure 7 A cross-sectional schematic diagram of a water tank in a water flosser according to an embodiment of the utility model is shown.

[0028] Reference numerals:

[0029] 100, dental flosser; Y, first direction; X, second direction; Z, longitudinal direction;

[0030] 1. Host; 11. Grip section; 12. Insertion section; 13. Button section; 14. Charging interface; 15. Unlocking member; 16. Sealing member; 17. Diversion channel; 111. Step section; 112. First side surface; 113. Second side surface; 121. Sealing groove; 161. Deformation groove;

[0031] 2. water tank; 21. opening; 22. water storage space; 23. bottom; 24. side; 241. first part; 242. second part; 243. third part;

[0032] 3. Nozzle. DETAILED DESCRIPTION

[0033] 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.

[0034] 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", "radial", "circumferential", 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.

[0035] 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.

[0036] 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.

[0037] 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.

[0038] See also Figure 1 The embodiment of the present application provides a water flosser 100, including a main unit 1, a water tank 2 and a nozzle 3. One end of the main unit 1 is connected to the water tank 2, and the other end is connected to the nozzle 3. A pressurizing component (not shown) is provided in the main unit 1. The pressurizing component is used to pressurize the water in the water tank 2 to form a high-pressure water flow, and guide the high-pressure water flow to the nozzle 3. The nozzle 3 is provided with a nozzle so that the high-pressure water flow can be ejected from the nozzle to achieve the function of cleaning teeth.

[0039] See also Figure 2 The main unit 1 includes a holding section 11 and an extending section 12 which are interconnected in the longitudinal direction thereof. The water tank 2 is open toward the main unit 1 to form an opening 21. The extending section 12 extends from the opening 21 into the water tank 2 and defines a water storage space 22 with the water tank 2. Along the longitudinal direction Z of the main unit 1, the cross-sectional area of ​​at least part of the water tank 2 tends to gradually increase in the direction away from the main unit 1.

[0040] In actual application, a guide channel 17 is provided in the main unit 1, which is connected to the water tank 2 and the nozzle 3 respectively, and guides the water in the water tank 2 to the nozzle 3; along the longitudinal direction Z of the main unit 1, the main unit 1 includes a holding section 11 and an extension section 12 connected to each other, the holding section 11 is used to connect with the nozzle 3, and the extension section 12 extends from the opening 21 of the water tank 2 into the water tank 2 and is connected to the water tank 2; when the user is in use, the palm of the user holds the main unit 1 at the body, that is, the palm is on the holding section 11, and part of the user's palm will contact with the water tank 2. Since at least part of the cross-sectional surface of the water tank 2 The area of ​​the water tank 2 gradually increases in the direction away from the main unit 1. Specifically, along the longitudinal direction Z of the main unit 1, the water tank 2 is small at the top and large at the bottom. The cross-sectional area of ​​the end of the water tank 2 close to the main unit 1 is smaller. In this way, when the user holds it, the water tank 2 with a smaller cross-section contacts the user's hand, reducing the impact on the user's hand holding posture; and the cross-sectional area of ​​the end of the water tank 2 away from the main unit 1 is larger and tends to increase gradually. This arrangement increases the capacity of the water storage space 22, making it easier for the water tank 2 to store more clean water and increase the use time of the water flosser 100.

[0041] See again Figure 2The water tank 2 includes a bottom 23 and a side 24. The side 24 is connected to the bottom 23 and extends toward the main unit 1 to form an opening 21. Along the longitudinal direction Z of the main unit 1, the cross-sectional area of ​​at least part of the side 24 gradually increases in the direction away from the main unit 1, and the outer surface of the side 24 presents a continuous smooth curved surface from the bottom 23 to the opening 21.

[0042] Specifically, the side portion 24 is annularly connected to the bottom 23 and defines a water storage space 22 together with the bottom 23. Along the longitudinal direction Z of the main unit 1, in the direction away from the main unit 1, the cross-sectional area of ​​at least part of the side portion 24 gradually increases to expand the volume of the water storage space 22. At the same time, the outer surface of the side portion 24 is a continuous smooth curved surface. In this way, the outer surface of the side portion 24 presents a smooth transition in the longitudinal direction Z. For some users with different hand sizes, such as users with larger palms, even if the user holds the water tank 2, the side portion 24 with a smooth transition in the longitudinal direction Z can enhance the comfort of the user's holding.

[0043] See also Figure 3 The side portion 24 includes a first portion 241, a second portion 242 and a third portion 243 connected in sequence along the longitudinal direction Z of the main unit 1, the first portion 241 is open toward the main unit 1 to form an opening portion 21, and the third portion 243 is connected to the bottom portion 23;

[0044] Among them, along the longitudinal direction Z of the host 1, the cross-sectional area of ​​the first part 241 shows a constant trend. The first part 241 is used for the insertion section 12 of the host 1 to be inserted, and as the part closest to the holding section 11, when the user holds the holding section 11, the first part 241 is the part that is most likely to contact the user's hand. Therefore, the volume of the first part 241 has the greatest impact on the user's holding. Based on this, setting the cross-sectional area of ​​the first part 241 to be constant can reduce the impact on the user's comfort when holding. Preferably, the cross-sectional area of ​​the first part 241 can be consistent with the holding section 11, so that the setting further enhances the user's comfort when holding.

[0045] The cross-sectional area of ​​the second part 242 tends to gradually increase in the direction away from the first part 241. Since the first part 241, the second part 242, the third part 243 and the bottom 23 define the water storage space 22, the gradual increase in the cross-sectional area of ​​the second part 242 can expand the volume of the water storage space 22 to facilitate loading more clean water.

[0046] The cross-sectional area of ​​the third portion 243 tends to remain unchanged. The third portion 243 is the portion connected to the bottom 23. If the cross-sectional area of ​​the third portion 243 is too large, it will affect the volume of the bottom 23, resulting in an increase in the volume of the bottom 23. Such a setting increases the production cost. If the cross-sectional area of ​​the third portion 243 is too small, it will affect the stability of the placement of the oral irrigator 100. Therefore, the cross-sectional area of ​​the third portion 243 tends to remain unchanged, which facilitates the placement of the oral irrigator 100 while controlling the production cost.

[0047] The cross section of the first portion 241 is prismatic, circular or elliptical, the cross section of the second portion 242 is prismatic, circular or elliptical, the cross section of the third portion 243 is circular, and the first portion 241, the second portion 242 and the third portion 243 are connected in sequence with smooth transition.

[0048] In one embodiment, along the longitudinal direction Z, in the direction from the first part 241 to the third part 243, the cross-section of the water tank 2 can gradually change from other shapes to a circle. Specifically, the cross-sections of the first part 241 and the second part 242 can be prismatic, circular or elliptical, while the cross-section of the third part 243 is circular. Since the third part 243 is the part connected to the bottom 23, and the bottom 23 is the part used to support the entire water flosser 100, the shape of the bottom 23 needs to be adapted to the third part 243. Therefore, the cross-section of the third part 243 is set to be circular, and the bottom 23 adapted thereto is also circular. The circular bottom 23 has a better supporting effect, so that the water flosser 100 is placed on the desktop more stably; the first part 241, the second part 242 and the third part 243 are connected in a smooth transition in sequence, so that the water tank 2 presents a smooth transition trend in the longitudinal direction Z, reducing the impact on the user's holding posture.

[0049] See again Figure 3 The host 1 also includes a button portion 13, which is connected to the holding section 11. The length between the button portion 13 and the water tank 2 is set to L1mm, 70<L1<130.

[0050] It should be noted that the button part 13 is connected to the driving component inside the host 1. The button part 13 serves as a switch component of the host 1 and is used to control the start and stop of the driving component. The driving component inside the host 1 can be a pressurizing component that drives the liquid guide nozzle 3 in the water tank 2.

[0051] In actual application, the user holds the grip section 11. Since a large amount of liquid is stored inside the water tank 2, the weight of the water tank 2 will be heavy. When holding, the user's palm will generally hold the end close to the water tank 2, so that the user's palm can better bear the gravity of the water tank 2 and save the user's wrist strength; at this time, the user's finger needs to touch the button part 13 to start the water flosser 100, so the distance between the button part 13 and the water tank 2 should not be too far or too close. If the button part 13 is too far from the water tank 2, it is difficult for the user's finger to touch the button part 13; if the button part 13 is too close to the water tank 2, the user's palm is easy to accidentally touch the button part 13, affecting the normal use of the water flosser 100.

[0052] Based on this, in one embodiment, the distance between the button part 13 and the water tank 2 can be set to 70mm<L1<130mm. This distance range meets the hand size of most users, is convenient for users to hold, and is conducive to users touching the button part 13, while reducing the probability of accidentally touching the button part 13 with the palm.

[0053] It is understandable that in some other embodiments, the distance L1 may also be other values, which is not limited in the present application.

[0054] See also Figure 4 The holding section 11 has a first direction Y and a second direction X that are perpendicular to each other in the lateral direction. The length of the holding section 11 in the first direction Y is greater than the length in the second direction X. The holding section 11 has a first side surface 112 in the first direction Y, and the holding section 11 has a second side surface 113 in the second direction X; wherein the button portion 13 is arranged on the second side surface 113.

[0055] For the convenience of description, Figure 4 In the figure, Y represents the first direction, and X represents the second direction; the holding section 11 itself defines a longitudinal direction Z and a transverse direction. The holding section 11 extends to a certain length along its longitudinal direction Z to form a shape such as a cuboid or an ellipsoid. The transverse direction is perpendicular to the longitudinal direction Z. In the transverse direction, the holding section 11 has a first direction Y and a second direction X that are perpendicular to each other. The lengths of the holding section 11 in the first direction Y and the second direction X are different. For example, the length of the holding section 11 in the first direction Y is greater than the length in the second direction X. Specifically, the holding section 11 has a long side and a short side in the transverse direction. The long side extends in the first direction Y, and the short side extends in the second direction X. The long side has a first side surface 112 in the extending direction, and the short side has a second side surface 113 in the extending direction.

[0056] In actual applications, since the area of ​​the first side 112 is larger than that of the second side 113, the first side 112 with a larger area is opposite to the user's palm. When holding, the user's palm fits against the first side 112, and the fingers hold the holding section 11 from opposite ends of the first side 112. At this time, the fingers are opposite to the second side 113. In this way, the present application arranges the button part 13 on the second side 113 to facilitate the user's fingers to touch and press the button part 13.

[0057] See again Figure 4 The host 1 further includes an unlocking member 15 , which is disposed on the second side surface 113 and connected to the insertion section 12 and the water tank 2 respectively. The insertion section 12 is detachably connected to the water tank 2 via the unlocking member 15 .

[0058] During use, the user needs to regularly fill the water storage space 22 in the water tank 2 with water. In order to facilitate the filling of the water tank 2, the present application provides an unlocking member 15. Specifically, the unlocking member 15 is movably arranged on the insertion section 12. When the insertion section 12 is inserted into the water tank 2, the unlocking member 15 can be moved relative to the insertion section 12 to selectively connect or separate from the water tank 2. When the unlocking member 15 is connected to the water tank 2, the insertion section 12 is connected to the water tank 2. When the unlocking member 15 is separated from the water tank 2, the user can apply force to remove the insertion section 12 from the water tank 2, thereby realizing the separation of the insertion section 12 from the water tank 2.

[0059] It is understandable that the unlocking member 15 and the water tank 2 can be connected in the form of snap-on or plug-in, and this application does not limit this.

[0060] In order to prevent the user from accidentally touching the unlocking member 15 when using the oral irrigator 100, the present application also arranges the unlocking member 15 on the second side 113, which effectively prevents the user's palm from accidentally touching the unlocking member 15, causing the water tank 2 and the main unit 1 to fall off, affecting the normal use of the oral irrigator 100. Preferably, the unlocking member 15 and the button portion 13 can be arranged on opposite sides of the holding section 11, and the installation of the two does not interfere with each other, making the overall design of the oral irrigator 100 more reasonable.

[0061] See also Figure 5 The first side surface 112 and the second side surface 113 are connected in a smooth transition. This arrangement makes the outer peripheral surface of the holding section 11 smooth and without abrupt edges and corners, making it more comfortable for the user to hold.

[0062] See again Figure 5 The host 1 further includes a charging interface 14 . The charging interface 14 and the unlocking member 15 are arranged at one end of the holding section 11 close to the water tank 2 .

[0063] In one embodiment, the charging interface 14 and the unlocking member 15 can be arranged on the same side to save installation space. At the same time, the charging interface 14 and the unlocking member 15 are arranged at the lower end of the holding section 11, that is, one end close to the water tank 2. In this way, when the user holds it, on the one hand, the user's palm is not easy to touch the unlocking member 15. On the other hand, the user's palm is held on the upper part of the charging interface 14, and the palm can block the water sprayed during flushing, preventing the water from flowing into the charging interface 14 along the holding section 11, causing contamination of the internal charging components.

[0064] See also Figure 6 The outer diameter of the holding section 11 is larger than the outer diameter of the insertion section 12, and a step portion 111 is formed at the connection between the holding section 11 and the insertion end. When the insertion section 12 is inserted into the water tank 2, the step portion 111 abuts against the end of the water tank 2, and the insertion section 12 and the water tank 2 are detachably connected.

[0065] In actual application, when the extension section 12 is extended into the water tank 2, the end of the water tank 2 abuts against the step portion 111. Since the oral irrigator 100 is usually placed vertically, that is, the oral irrigator 100 is perpendicular to the table top, and the bottom 23 of the water tank 2 is placed on the table top, the water tank 2 serves as the main supporting part of the oral irrigator 100. Through the abutment between the water tank 2 and the step portion 111, the water tank 2 supports the main unit 1, thereby preventing the weight of the main unit 1 from being concentrated on the connection between the extension section 12 and the water tank 2, causing the connection between the extension section 12 and the water tank 2 to be deformed due to force, thereby affecting the stability of the connection between the extension section 12 and the water tank 2 and reducing the service life of the oral irrigator 100.

[0066] More specifically, when the extending section 12 extends into the water tank 2, the outer surface of the holding section 11 is flush with the outer surface of the water tank 2, and the holding section 11 and the water tank 2 form a smooth curved transition.

[0067] In one embodiment, when the step portion 111 of the holding section 11 abuts against the end of the water tank 2, at this abutment, the cross-sectional area of ​​the step portion 111 is the same as the cross-sectional area of ​​the end of the water tank 2. This arrangement is beneficial to improving the comfort of the user's hand when holding, and makes the overall shape of the water flosser 100 smoother and more beautiful.

[0068] See also Figure 7 When the extending section 12 extends into the water tank 2, the length between the bottom surface of the extending section 12 and the opening 21 is L2 mm, and L2>7.

[0069] In one embodiment, in order to enhance the connection stability between the main unit 1 and the water tank 2, the length of the insertion section 12 extending into the water tank 2 may be greater than 7 mm. If the distance that the insertion section 12 extends into the water tank 2 is less than 7 mm, the connection between the insertion section 12 and the water tank 2 is too short and the connection stability is poor, which may cause the insertion section 12 to easily detach from the water tank 2, thereby affecting the normal use of the oral irrigator 100.

[0070] It is understandable that in some other embodiments, the length L2 of the extending section 12 extending into the water tank 2 may also adopt other values, and the present application does not limit this.

[0071] See again Figure 6 The main unit 1 further includes a sealing member 16. The insertion section 12 is provided with a sealing groove 121. The sealing member 16 is disposed in the sealing groove 121 and abuts against the insertion section 12 and the water tank 2, respectively. Specifically, an annular sealing groove 121 is disposed on the outer side surface of the insertion section 12. The sealing member 16 is installed in the sealing groove 121. When the insertion section 12 is inserted into the water tank 2 and connected with the water tank 2, the sealing member 16 abuts against the inner side wall of the water tank 2 to play a sealing role and prevent the liquid in the water tank 2 from leaking from the connection between the insertion section 12 and the water tank 2.

[0072] More specifically, a deformation groove 161 is provided on the side of the seal 16 facing the water tank 2. In order to improve the sealing effect of the seal 16, the seal 16 usually abuts against the inner wall of the water tank 2. Since the seal 16 has a certain plasticity, when the insertion section 12 is inserted into the water tank 2, the inner wall of the water tank 2 abuts against the seal 16 during the insertion process. If the deformation amount of the seal 16 is small, the friction between the seal 16 and the inner wall of the water tank 2 is large, and this friction hinders the insertion section 12 from being inserted into the water tank 2. Based on this, a deformation groove 161 is provided on the side of the seal 16 facing the water tank 2. On the one hand, the volume of the seal 16 is reduced, making it easy to deform, thereby increasing the abutment effect between the seal 16 and the water tank 2; on the other hand, it is convenient to reduce the contact area with the inner wall of the water tank 2 and reduce the friction.

[0073] Different from the prior art, the embodiment of the present application provides a water flosser 100, comprising a main unit 1 and a water tank 2, the main unit 1 comprising a gripping section 11 and an insertion section 12 connected to each other in the longitudinal direction thereof, the water tank 2 being open toward the main unit 1 to form an opening 21, the insertion section 12 extending from the opening 21 into the water tank 2, and defining a water storage space 22 with the water tank 2; wherein, along the longitudinal direction Z of the main unit 1, at least part of the cross-sectional area of ​​the water tank 2 gradually increases in the direction away from the main unit 1. Compared with the prior art, along the longitudinal direction Z of the main unit 1, the water tank 2 of the present application presents a shape of being small at the top and large at the bottom, and the cross-sectional area of ​​the end of the water tank 2 close to the main unit 1 is smaller, so that when the user holds the water tank 2, the water tank 2 with a smaller cross-sectional area reduces the influence on the user's hand holding posture; and the cross-sectional area of ​​the end of the water tank 2 away from the main unit 1 is larger and gradually increases, so that the capacity of the water storage space 22 is increased, so that the water tank 2 can store more clean water and improve the use time of the water flosser 100.

[0074] The above is only a specific implementation 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: The main unit comprises a holding section and an insertion section connected to each other in the longitudinal direction thereof; A water tank, the water tank is open toward the main unit to form an opening, the extending section extends from the opening into the water tank and defines a water storage space with the water tank; Wherein, along the longitudinal direction of the main machine, the cross-sectional area of ​​at least part of the water tank tends to gradually increase in the direction away from the main machine.

2. The oral rinser according to claim 1, characterized in that: The water tank includes a bottom and a side portion, wherein the side portion is connected to the bottom and extends toward the main unit to form the opening portion, and along the longitudinal direction of the main unit, a cross-sectional area of ​​at least a portion of the side portion gradually increases in a direction away from the main unit, and an outer surface of the side portion presents a continuous smooth curved surface from the bottom to the opening portion.

3. The oral rinser according to claim 2, characterized in that: The side portion includes a first portion, a second portion and a third portion connected in sequence along the longitudinal direction of the main unit, the first portion is open toward the main unit to form the opening portion, and the third portion is connected to the bottom portion; Among them, along the longitudinal direction of the main unit, the cross-sectional area of ​​the first part presents a constant trend, the cross-sectional area of ​​the second part presents a gradually increasing trend in the direction away from the first part, and the cross-sectional area of ​​the third part presents a constant trend.

4. The oral rinser according to claim 3, characterized in that: The cross section of the first part is prismatic, circular or elliptical, the cross section of the second part is prismatic, circular or elliptical, the cross section of the third part is circular, and the first part, the second part and the third part are connected in a smooth transition in sequence.

5. The oral rinser according to claim 1, characterized in that: The outer diameter of the holding section is larger than the outer diameter of the insertion section, and a step portion is formed at the connection between the holding section and the insertion end. When the insertion section is inserted into the water tank, the step portion abuts against the end of the water tank, and the insertion section is detachably connected to the water tank.

6. The oral rinser according to claim 5, characterized in that: When the extending section extends into the water tank, the outer surface of the holding section is flush with the outer surface of the water tank, and the holding section and the water tank form a smooth curved surface transition.

7. The oral rinser according to claim 1, characterized in that: The host also includes a button portion, which is connected to the holding section. The length between the button portion and the water tank is set to L1mm, 70<L1<130.

8. The oral rinser according to claim 7, characterized in that: The holding section has a first direction and a second direction perpendicular to each other in the lateral direction, the length of the holding section in the first direction is greater than the length in the second direction, the holding section has a first side surface in the first direction, and the holding section has a second side surface in the second direction; wherein the button portion is arranged on the second side surface.

9. The oral rinser according to claim 8, characterized in that: The host also includes an unlocking member, which is arranged on the second side and is respectively connected to the insertion section and the water tank, and the insertion section is detachably connected to the water tank through the unlocking member.

10. The oral rinser according to claim 8, characterized in that: The first side surface and the second side surface are connected in a smooth transition.

11. The oral rinser according to claim 9, characterized in that: The host also includes a charging interface, and the charging interface and the unlocking member are arranged at one end of the holding section close to the water tank.

12. The oral rinser according to claim 1, characterized in that: When the extending section extends into the water tank, the length between the bottom surface of the extending section and the opening is L2 mm, and L2>7.

13. The oral rinser according to claim 1, characterized in that: The main machine comprises a sealing member, the extending section is provided with a sealing groove, the sealing member is arranged in the sealing groove and abuts against the extending section and the water tank respectively.

14. The oral rinser according to claim 13, characterized in that: A deformation groove is arranged on one side of the sealing member facing the water tank.

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