Waterpik

Abstract

The present disclosure provides an oral irrigator capable of accelerating the evaporation speed of residual water droplets in a water tank in a vertical posture, and achieving effective drainage ventilation. The oral irrigator (1) has a body (10) and a water tank (20) connected to the body (10) in a detachable manner. The lower end of the body (10) is formed in a cylindrical shape with an opening. The upper end of the water tank (20) is connected to the lower end of the body (10). The oral irrigator (1) can be switched between a first state, a second state, and a third state. When the oral irrigator is in the first state, the water tank is connected to the body in a manner that prevents water from leaking out of the water tank. When the oral irrigator is in the second state, a drainage ventilation path is formed between the water tank and the body to allow air to circulate between the inside and outside of the water tank to remove water. When the oral irrigator is in the third state, the water tank is not connected to the body.

Description

Technical Field

[0001] This disclosure relates to the field of dental cleaning technology, and more particularly to a dental flosser. Background Technology

[0002] A water flosser is an auxiliary tool for cleaning the oral cavity. It uses the force of water jets to clean teeth and between teeth. A water flosser generally consists of a main body formed by integrating a circuit board and a water pump assembly into a housing, a nozzle connected to the main body that sprays water for cleaning the oral cavity, and a water tank that is detachably connected to the main body and stores water for cleaning the oral cavity.

[0003] In existing water flossers, some have a water inlet on the side wall of the tank. After use, residual water can be drained using the nozzle or poured out through the inlet. However, this doesn't completely remove the water, and some droplets usually remain inside. Since the tank is sealed for extended periods, these droplets can cause unpleasant odors and, over time, lead to the accumulation of scale and bacteria. To quickly remove these droplets and achieve drying, a method using a bottom cover is known. After use, the bottom cover is completely removed from the tank, allowing it to lie horizontally and expose the entire interior. However, this horizontal placement can lead to instability and the water flosser falling, contamination of the tank's interior, and also takes up more storage space and affects the aesthetics of the washing area. Therefore, there is room for improvement in the drainage and ventilation structure of existing water flossers. Utility Model Content

[0004] This disclosure was made in consideration of the above circumstances, and its purpose is to provide a water flosser that can accelerate the evaporation rate of residual water droplets in the water tank and achieve effective drainage and ventilation when placed in a vertical position.

[0005] The oral irrigator disclosed herein comprises a body and a water tank detachably connected to the body. The lower end of the body is formed into a cylindrical shape with an opening, and the upper end of the water tank is connected to the lower end of the body. The oral irrigator can switch between a first state, a second state, and a third state. When the oral irrigator is in the first state, the water tank is connected to the body in a manner that prevents water from leaking out through the water tank. When the oral irrigator is in the second state, a drainage and ventilation path is formed between the water tank and the body to allow air to circulate inside and outside the water tank and to drain water. When the oral irrigator is in the third state, the water tank is not connected to the body.

[0006] According to one embodiment of the present disclosure, a water flosser has circumferential ventilation holes on the lower side of the body.

[0007] According to one embodiment of the oral irrigator disclosed herein, the water tank and the body are switchable between a first state, a second state, and a third state by changing the engagement state between an engaging protrusion and a guide groove. The engaging protrusion is disposed on the upper inner wall of the water tank, and the guide groove is used to guide the engaging protrusion and is disposed on the lower outer wall of the body at a position different from the vent hole. Alternatively, the engaging protrusion is disposed on the lower outer wall of the body at a position different from the vent hole, and the guide groove is used to guide the engaging protrusion and is disposed on the upper inner wall of the water tank.

[0008] According to one aspect of the present disclosure, the guide groove includes a guide groove opening into which the engaging protrusion slides, a first engaging portion for the engaging protrusion to engage and be positioned, and a second engaging portion for the engaging protrusion to engage and be positioned.

[0009] According to one embodiment of the oral irrigator disclosed herein, the first engaging portion includes a first locking member capable of locking the engaging protrusion, and the second engaging portion includes a second locking member capable of locking the engaging protrusion.

[0010] According to one embodiment of the oral irrigator disclosed herein, when the oral irrigator is in the first state, the engaging protrusion is locked to the first engaging portion by the first locking member, and the vent is blocked by the upper inner wall of the water tank. When the oral irrigator is in the second state, the engaging protrusion is locked to the second engaging portion by the second locking member, and the vent is exposed without being blocked by the upper inner wall of the water tank, thus forming part of the drainage and ventilation path. When the oral irrigator is in the third state, the engaging protrusion is not engaged with either the first engaging portion or the second engaging portion, so that the water tank is not connected to the body.

[0011] According to one aspect of the oral irrigator disclosed herein, the first engaging portion and the second engaging portion are located on the same side or on opposite sides of the guide groove opening relative to the guide groove opening.

[0012] According to one embodiment of the present disclosure, the water tank has an internal thread on the upper inner wall and an external thread formed at a different position from the vent hole on the lower outer wall of the body, which can engage with the internal thread. The water tank and the body can switch between the first state, the second state and the third state by changing the engagement state between the internal thread and the external thread.

[0013] According to one embodiment of the present disclosure, when the water flosser is in the first state, the internal thread and the external thread are fully engaged, and the vent is blocked by the upper inner wall of the water tank. When the water flosser is in the second state, the internal thread and the external thread are partially engaged, and the vent is not blocked by the upper inner wall of the water tank and is exposed, thus forming part of the drainage and ventilation path. When the water flosser is in the third state, the internal thread is not engaged with the external thread, so the water tank is not connected to the body.

[0014] According to one embodiment of the oral irrigator disclosed herein, an engaging portion is provided on the lower outer wall of the main body, below the ventilation hole, and at least two positioning portions are provided on the upper inner wall of the water tank in a vertical direction. The positioning portions include a first positioning portion and a second positioning portion disposed above the first positioning portion. The main body and the water tank can switch between the first state, the second state, and the third state by changing the engaging state between the engaging portion and the positioning portion.

[0015] According to one embodiment of the oral irrigator disclosed herein, when the oral irrigator is in the first state, the engaging part engages with the first positioning part, and the vent is blocked by the upper inner wall of the water tank. When the oral irrigator is in the second state, the engaging part engages with the second positioning part, and the vent is not blocked by the upper inner wall of the water tank and is exposed, thereby forming part of the drainage and ventilation path. When the oral irrigator is in the third state, the engaging part does not engage with the positioning part, thereby the water tank is not connected to the main body.

[0016] Utility Model Effect

[0017] According to the oral irrigator disclosed herein, the evaporation rate of residual water droplets in the water tank can be accelerated and effective drainage and ventilation can be achieved when the device is placed vertically. Attached Figure Description

[0018] Figure 1 This is a front view of the oral irrigator according to the first embodiment of this disclosure;

[0019] Figure 2 This is a front view of the oral irrigator according to the first embodiment of this disclosure;

[0020] Figure 3 This is a perspective view of the oral irrigator according to the first embodiment of this disclosure;

[0021] Figure 4A This is a partial front view of the body of the oral irrigator according to the first embodiment of this disclosure;

[0022] Figure 4BThis is a partial front view of the body of the oral irrigator according to the first embodiment of this disclosure;

[0023] Figure 5A This is a partial perspective view of the water tank of the oral irrigator according to the first embodiment of this disclosure;

[0024] Figure 5B This is a partial perspective view of the water tank of the oral irrigator according to the first embodiment of this disclosure;

[0025] Figure 6 This is a partial longitudinal sectional view of the oral irrigator according to the first embodiment of this disclosure;

[0026] Figure 7 This is a partial front view of the body of the oral irrigator according to the second embodiment of this disclosure;

[0027] Figure 8A This is a partial perspective view of the body of the oral irrigator according to the third embodiment of this disclosure;

[0028] Figure 8B This is a partial perspective view of the water tank of the oral irrigator according to the third embodiment of this disclosure;

[0029] Figure 9A This is a perspective view of the main body of the oral irrigator according to the fourth embodiment of this disclosure;

[0030] Figure 9B This is a partial perspective view of the body of the oral irrigator according to the fourth embodiment of this disclosure;

[0031] Figure 10A This is a perspective view of the water tank of the oral irrigator according to the fourth embodiment of this disclosure;

[0032] Figure 10B This is a partial perspective view of the water tank of the oral irrigator according to the fourth embodiment of this disclosure;

[0033] Figure 11 This is a front view of the oral irrigator according to the sixth embodiment of this disclosure;

[0034] Figure 12 This is a front view of the oral irrigator according to the sixth embodiment of this disclosure;

[0035] Figure 13 This is a perspective view of the oral irrigator according to the sixth embodiment of this disclosure;

[0036] Figure 14A This is a partial front view of the body of the oral irrigator according to the sixth embodiment of this disclosure;

[0037] Figure 14B This is a partial perspective view of the water tank of the oral irrigator according to the sixth embodiment of this disclosure;

[0038] Figure 15AThis is a partial longitudinal sectional view of the oral irrigator according to the sixth embodiment of this disclosure;

[0039] Figure 15B This is a partial longitudinal sectional view of the oral irrigator according to the sixth embodiment of this disclosure;

[0040] Figure 16A This is a partial longitudinal sectional view of the oral irrigator according to the sixth embodiment of this disclosure;

[0041] Figure 16B This is a partial longitudinal sectional view of the oral irrigator according to the sixth embodiment of this disclosure.

[0042] Explanation of reference numerals in the attached figures

[0043] 1. Water flosser;

[0044] 10 body;

[0045] 20 water tanks;

[0046] 11. Ventilation holes;

[0047] 12, 23, 25 guide grooves;

[0048] 13, 22, 15A Clamping protrusions;

[0049] 14. Notch;

[0050] 15 Tongue. Detailed Implementation

[0051] The embodiments of this disclosure will now be described with reference to the accompanying drawings. However, it should be understood that these descriptions are exemplary only and are not intended to limit the scope of this disclosure. In the following detailed description, numerous specific details are set forth to provide a comprehensive understanding of the embodiments of this disclosure for ease of explanation. However, it will be apparent that one or more embodiments may be implemented without these specific details. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concepts of this disclosure.

[0052] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit this disclosure. The terms “comprising”, “features”, etc., as used herein indicate the presence of the described features, operations, and / or components, but do not exclude the presence or addition of one or more other features, operations, or components.

[0053] All terms used herein (including technical and scientific terms) have the meanings commonly understood by those skilled in the art, unless otherwise defined. It should be noted that the terms used herein are to be interpreted in a manner consistent with the context of this specification, and not in an idealized or overly rigid way.

[0054] When using expressions such as "at least one of A, B, and C," they should generally be interpreted in accordance with the meaning commonly understood by a person skilled in the art (e.g., "an apparatus having at least one of A, B, and C" should include, but is not limited to, having A alone, having B alone, having C alone, having A and B, having A and C, having B and C, and / or having A, B, and C, etc.). A person skilled in the art should also understand that any conjunction and / or phrase that substantially arbitrarily represents two or more alternative items, whether in the specification, claims, or drawings, should be understood to give the possibility of including one of these items, either of these items, or both items. For example, the phrase "A or B" should be understood to include the possibility of "A" or "B," or "A and B."

[0055] Furthermore, in the following description, the same reference numerals are used for the same components or structures, and repeated descriptions are omitted. Also, for ease of understanding, the scale and aspect ratios of the actual objects may be appropriately altered or exaggerated in the accompanying drawings.

[0056] For ease of explanation, this disclosure uses terms such as "upper end," "lower end," "upper side," "lower side," "above," and "below" to indicate the orientation of the water flosser in its vertical position. When the water flosser is not in its vertical position, the above terms can be equivalently replaced by terms such as "one end," "the other end," "one side," "the other side," "one side," and "the other side."

[0057] In particular, the nozzle connected to the body and spraying water for cleaning the mouth in this disclosure can use a nozzle of a known structure, so its description is omitted and the corresponding illustration is omitted in the accompanying drawings.

[0058] This disclosure provides a water flosser. The water flosser includes a main body and a water tank detachably connected to the main body. The lower end of the main body is formed into a cylindrical shape with an opening. The upper end of the water tank is connected to the lower end of the main body. The water flosser can switch between a first state, a second state, and a third state. When the water flosser is in the first state, the water tank is connected to the main body in a manner that prevents water from leaking out through the water tank. When the water flosser is in the second state, a drainage ventilation path is formed between the water tank and the main body, allowing air to circulate inside and outside the water tank while discharging water. When the water flosser is in the third state, the water tank is not connected to the main body.

[0059] [First Implementation Method]

[0060] The following is for reference Figures 1 to 16B The oral irrigator 1 according to the first embodiment of this disclosure will be described.

[0061] Figure 1 and Figure 2 This is a front view of the oral irrigator 1 according to the first embodiment of this disclosure. Figure 3 This is a 3D view of the water flosser 1.

[0062] like Figures 1 to 3 As shown, the oral irrigator 1 includes a body 10 and a water tank 20 detachably connected to the body 10. The lower end of the body 10 is formed into a cylindrical shape with an opening. The upper end of the water tank 20 is connected to the lower end of the body 10. Depending on the connection state between the water tank 20 and the body 10, the oral irrigator 1 can... Figure 1 The first state shown Figure 2 The second state shown and Figure 3 The device switches between the shown three states. In the first state, the water tank 20 is connected to the main body 10 in a manner that prevents water from leaking out. This first state is the normal operating state for cleaning the mouth with the water tank. In the second state, a drainage and ventilation path is formed between the water tank 20 and the main body 10, allowing air to circulate inside and outside the water tank 20 and expelling water. This second state is a drainage and ventilation state that allows residual water droplets in the water tank to evaporate quickly after using the water tank. In the third state, the water tank 20 is not connected to the main body 10. This third state is a deep cleaning state that allows for thorough cleaning of the water tank 20.

[0063] In this way, because the water flosser can switch between three states, it can accelerate the evaporation of residual water droplets in the tank and achieve effective drainage and ventilation when placed vertically. In other words, after using the water flosser, there is no need to completely detach the tank from the main body; maintaining the water flosser's vertical position is sufficient for effective drainage and ventilation. This also helps maintain the water flosser's aesthetic appeal and cleanliness when stored.

[0064] Figure 4A and Figure 4B This is a partial front view of the body 10 of the water flosser 1, showing in detail the structure of the lower side of the body 10. Figure 5A and Figure 5B This is a partial perspective view of the water tank 20 of the water flosser 1, showing in detail the structure of the upper side of the water tank 20.

[0065] like Figures 2 to 4B As shown, ventilation holes 11 are provided on the lower side of the body 10. Preferably, a plurality of ventilation holes 11 are provided circumferentially on the lower side of the body 10. Additionally, a guide groove 12 is provided on the outer wall of the lower side of the body 10, and this guide groove 12 is formed at a different position than the ventilation holes 11. Figure 3 and Figure 5AAs shown, a locking protrusion 22 is provided on the inner wall of the upper side of the water tank 20. The locking protrusion 22 of the water tank 20 can be guided by the guide groove 12 of the body 10 and engage with the guide groove 12. Thus, the water tank 20 and the body 10 can switch between a first state, a second state, and a third state by changing the engagement state between the locking protrusion 22 and the guide groove 12. In this embodiment, a pair of guide grooves 12 and a pair of locking protrusions 22 corresponding to the pair of guide grooves 12 are provided in a centrally symmetrical manner.

[0066] More specifically, such as Figure 4B As shown, the guide groove 12 includes a guide groove opening 120 into which the engaging protrusion 22 slides, a first engaging portion 121 for the engaging protrusion 22 to engage and achieve positioning, and a second engaging portion 122 located below the first engaging portion 121 for the engaging protrusion 22 to engage and achieve positioning. Preferably, the first engaging portion 121 includes a first locking member 121L capable of locking the engaging protrusion 22. Figure 4B As shown, the first locking member 121L is, for example, a protrusion formed in the first engaging portion 121. When the first engaging portion 121 includes the first locking member 121L formed as a protrusion, as... Figure 5B As shown, the engaging protrusion 22 includes a recess 221 whose shape and position correspond to the first locking member 121L. Additionally, although not shown, the positions of the protrusion and the recess can be interchanged. For example, the first locking member can be formed as a recess, while the engaging protrusion 22 can further have a protrusion whose shape and position correspond to the first locking member.

[0067] When the first engaging portion 121 includes a first locking member 121L capable of locking the engaging protrusion 22, a more stable engagement between the engaging protrusion 22 and the guide groove 12 in the first state can be achieved. That is, when the water flosser 1 is in the first state, the engaging protrusion 22 is locked to the first engaging portion 121 by the first locking member 121L, and the ventilation hole 11 is blocked by the upper inner wall of the water tank 20. Thus, in the first state, which is the normal use state when using the water flosser to clean the mouth, the engaging protrusion 22 can be stably engaged in the guide groove 12 without falling off, exhibiting good reliability. In addition, for aesthetics and comfort during use, it is preferable that the outer surface of the body 10 and the outer surface of the water tank 20 are smoothly in contact when the water flosser 1 is in the first state. When the water flosser 1 is in the second state, the engaging protrusion 22 is engaged in the second engaging portion 122, and the ventilation hole 11 is exposed without being blocked by the upper inner wall of the water tank, thereby forming part of the drainage and ventilation path. When the water flosser 1 is in the third state, the engaging protrusion 22 does not engage with either the first engaging part 121 or the second engaging part 122, so that the water tank 20 is not connected to the body 10.

[0068] Additionally, although not shown, the second engaging portion 122 may also include a second locking member capable of locking the engaging protrusion 22, the shape of which may be the same as the first locking member 121L. When the second engaging portion 122 includes a second locking member capable of locking the engaging protrusion 22, a more stable engagement between the engaging protrusion 22 and the guide groove 12 in the second state can be further achieved. That is, when the water flosser 1 is in the first state, the engaging protrusion 22 is locked to the first engaging portion 121 by the first locking member 121L, and the vent 11 is blocked by the upper inner wall of the water tank 20. When the water flosser is in the second state, the engaging protrusion 22 is locked to the second engaging portion 122 by the second locking member (not shown), and the vent 11 is not blocked by the upper inner wall of the water tank 20 and is exposed, thus forming part of the drainage and ventilation path. When the water flosser 1 is in the third state, the engaging protrusion 22 does not engage with either the first engaging part 121 or the second engaging part 122, so that the water tank 20 is not connected to the body 10.

[0069] Furthermore, the engagement between the engaging protrusion 22 and the engaging portion of the guide groove 12 is achieved by rotating the water tank 20 relative to the body 10. That is, in the first state where the engaging protrusion 22 is engaged with the first engaging portion 121, rotating the water tank 20 towards the guide groove opening 120, after the engaging protrusion 22 disengages from the first engaging portion 121, slightly pulling down the water tank 20, and then rotating the water tank 20 to engage the engaging protrusion 22 with the second engaging portion 122 achieves the second state. From the first or second state, rotating the engaging protrusion 22 out of the guide groove opening 120 achieves the third state. Conversely, in the third state where the engaging protrusion 22 is completely separated from the engaging portion of the guide groove 12, rotating the water tank 20 to engage the engaging protrusion 22 with the first engaging portion 121 achieves the first state, and engaging the engaging protrusion 22 with the second engaging portion 122 achieves the second state. When the engaging part includes a locking member, the engagement or disengagement of the engaging protrusion 22 with the first engaging part 121 or the second engaging part 122 can be identified by the sound or feel when locking or unlocking during the rotation of the water tank 20.

[0070] In this embodiment, the first engaging portion 121 and the second engaging portion 122 are located on the same side of the guide groove opening 120 relative to the guide groove opening 120, such as... Figure 4B As shown, it is located on the right side of the guide groove opening 120.

[0071] Figure 6 This is a partial longitudinal sectional view showing the water flosser 1, which details the airflow pattern in the second state of this embodiment.

[0072] like Figure 6As shown, when the water flosser 1 is in the second state, the vent 11 of the main body 10 is not blocked by the inner wall of the upper side of the water tank 20 and is exposed, thus forming part of the drainage and ventilation path, and the water tank 20 is in communication with the outside air. Air enters the water tank 20 through the vent 11, causing air convection inside the water tank 20, and then flows out to the outside through the vent 11. That is to say, a drainage and ventilation path is formed between the water tank 20 and the main body 10, allowing air to circulate inside and outside the water tank 20 to remove water. This vent 11 forms part of the drainage and ventilation path, accelerating the evaporation rate of residual water droplets in the water tank. Multiple vent 11s are formed, thus the drainage and ventilation effect is good.

[0073] [Second Implementation Method]

[0074] In the first embodiment, such as Figure 4B As shown, the first engaging portion 121 and the second engaging portion 122 are located on the same side of the guide groove opening 120 relative to the guide groove opening 120. In contrast, in this embodiment, as... Figure 7 As shown, the first engaging part 121 and the second engaging part 122 of the water flosser 1 are located on the left and right sides of the guide groove opening 120, respectively, relative to the guide groove opening 120.

[0075] In this embodiment, the structure of the water flosser 1 is exactly the same as that in the first embodiment, except for the shape of the guide groove opening 120.

[0076] Furthermore, compared to the first embodiment, the guide groove 12 is identical in all aspects except for the shape and position of the second engaging portion 122. This includes the placement of the first locking member 121L and / or the second locking member 122L, the shape of the locking member and its position relative to the engaging portion, and its correspondence with the engaging protrusion 22 of the water tank 20. Moreover, the engagement between the engaging protrusion 22 and the engaging portion of the guide groove 12 in this embodiment is also achieved by rotating the water tank 20 relative to the body 10. Therefore, the same structure and arrangement as the first embodiment will not be described here.

[0077] [Third Implementation Method]

[0078] In the first and second embodiments, a guide groove 12 is provided on the lower outer wall of the body 10, and an engaging protrusion 22 is provided on the upper inner wall of the water tank 20. In contrast, in this embodiment, as... Figure 8A and Figure 8BAs shown, a locking protrusion 13 is provided on the lower outer wall of the main body 10, and a guide groove 23 is provided on the upper inner wall of the water tank 20. The guide groove 23 includes a guide groove opening 230 for the locking protrusion 13 to slide into the guide groove 23, a first locking part 231 for the locking protrusion 13 to engage and achieve positioning, and a second locking part 232 for the locking protrusion 231 to engage and achieve positioning and located above the first locking part 231. That is, compared with the first and second embodiments, the positions of the guide groove and the locking protrusion are interchanged in this embodiment, and correspondingly, the vertical positions of the first locking part and the second locking part are also changed.

[0079] Furthermore, similarly to the first embodiment, the engagement between the engaging protrusion 13 and the engaging portion of the guide groove 23 in this embodiment is also achieved by rotating the water tank 20 relative to the body 10. Therefore, the same structure and arrangement as in the first and second embodiments will not be described here.

[0080] In this embodiment, such as Figure 8B As shown, the first engaging portion 231 and the second engaging portion 232 of the water flosser 1 are located on the left and right sides of the guide groove opening 120, respectively, relative to the guide groove opening 230. Alternatively, the first engaging portion 231 and the second engaging portion 232 of the water flosser 1 may be located on the same side of the guide groove opening 120, respectively, relative to the guide groove opening 230.

[0081] [Fourth Implementation Method]

[0082] Figure 9A and Figure 9B This is a perspective view of the body 10 of the water flosser according to this embodiment. Figure 10A and Figure 10B This is a perspective view of the water tank 20 of the oral irrigator according to this embodiment.

[0083] like Figure 9A and Figure 9B As shown, a notch 14 is formed at a different position than the ventilation hole 11 on the lower outer wall of the body 10. A tongue 15, spaced at a predetermined interval from the adjacent outer wall in the circumferential direction, is provided in the notch 14. An outwardly protruding engaging protrusion 15A is provided at the lower end of the tongue 15. For example... Figure 10A and Figure 10B As shown, a guide groove 25 for guiding the engaging protrusion 15A is provided on the inner wall of the upper side of the water tank 20. Similar to the first to third embodiments, the guide groove 25 also includes a guide groove opening 250 into which the engaging protrusion 15A slides, a first engaging portion 251 for the engaging protrusion 15A to engage and achieve positioning, and a second engaging portion 252 located above the first engaging portion 251 for the engaging protrusion 15A to engage and achieve positioning. Figure 10BAs shown in the enlarged view, the second engaging portion 252 is, for example, formed as a recess capable of receiving the engaging protrusion 15A. Thus, the body 10 and the water tank 20 can switch between a first state, a second state, and a third state by changing the engagement state between the engaging protrusion 15A and the guide groove 25.

[0084] Furthermore, in this embodiment, the engagement between the engaging protrusion 15A and the engaging portion of the guide groove 25 is also achieved by rotating the water tank 20 relative to the body 10. Therefore, the same structure and arrangement as in the first to third embodiments will not be described here.

[0085] It should be noted that in this embodiment, a notch 14 and a tongue 15 are provided on the lower outer wall of the main body 10, and a guide groove 25 is provided on the upper inner wall of the water tank 20. However, the positions of the notch and tongue and the guide groove can be interchanged; that is, the guide groove can be provided on the lower outer wall of the main body, while the notch and tongue are provided on the upper inner wall of the water tank. When the positions of the guide groove and the notch and tongue are interchanged, the specific structure of the guide groove and the notch and tongue themselves does not change.

[0086] In addition, in this embodiment, such as Figure 10A and Figure 10B As shown, the first engaging portion 251 and the second engaging portion 252 of the water flosser 1 are located on the left and right sides of the guide groove opening 250, respectively, relative to the guide groove opening 250. Alternatively, the first engaging portion 251 and the second engaging portion 252 of the water flosser 1 may be located on the same side of the guide groove opening 250, respectively, relative to the guide groove opening 250.

[0087] [Fifth Implementation Method]

[0088] In the first to fourth embodiments, the water tank 20 and the body 10 switch between the first, second, and third states by changing the engagement state between the engagement protrusion and the guide groove. Alternatively, the switching between the first, second, and third states can also be achieved by changing the engagement state between the internal and external threads on the water tank and the body.

[0089] Although not illustrated, an internal thread can be provided on the inner wall of the upper side of the water tank, and an external thread formed at a different position than the ventilation hole and capable of engaging with the internal thread can be provided on the outer wall of the lower side of the body. Thus, the water tank and the body can switch between the first state, the second state and the third state by changing the engagement state between the internal thread and the external thread.

[0090] That is, in the first state, the internal and external threads are fully engaged, and the ventilation hole is blocked by the upper inner wall of the water tank. In the second state, the internal and external threads are partially engaged, and the ventilation hole is exposed, thus forming part of the drainage and ventilation path. In the third state, the internal and external threads are not engaged, so the water tank is not connected to the main body.

[0091] Furthermore, the engagement of the internal and external threads is achieved by rotating the water tank relative to the main body. That is, in the first state where the internal and external threads are fully engaged, rotating the water tank in the loosening direction achieves the second state when it is not fully unscrewed, and the third state when it is fully unscrewed. Conversely, in the third state where the internal and external threads are completely separated, rotating the water tank in the tightening direction achieves the second state when it is not fully engaged, and the first state when it is fully engaged.

[0092] It should be noted that in this embodiment, an internal thread is provided on the inner wall of the upper side of the water tank, and an external thread is provided on the outer wall of the lower side of the main body. However, the positions of the internal and external threads can be interchanged; that is, an internal thread can be provided on the inner wall of the lower side of the main body, and an external thread can be provided on the outer wall of the upper side of the water tank.

[0093] [Sixth Implementation Method]

[0094] The following is for reference Figures 11 to 16B The oral irrigator 1 according to the sixth embodiment of this disclosure will be described.

[0095] Figure 11 and Figure 12 This is a front view of the oral irrigator 1 according to the sixth embodiment of this disclosure. Figure 13 This is a 3D view of the water flosser 1.

[0096] like Figures 11 to 13 As shown, the oral irrigator 1 includes a body 10 and a water tank 20 detachably connected to the body 10. The lower end of the body 10 is formed into a cylindrical shape with an opening. The upper end of the water tank 20 is connected to the lower end of the body 10. Depending on the connection state between the water tank 20 and the body 10, the oral irrigator 1 can... Figure 11 The first state shown Figure 12 The second state shown and Figure 13The device switches between the shown three states. In the first state, the water tank 20 is connected to the main body 10 in a manner that prevents water from leaking out. This first state is the normal operating state for cleaning the mouth with the water tank. In the second state, a drainage and ventilation path is formed between the water tank 20 and the main body 10, allowing air to circulate inside and outside the water tank 20 and expelling water. This second state is a drainage and ventilation state that allows residual water droplets in the water tank to evaporate quickly after using the water tank. In the third state, the water tank 20 is not connected to the main body 10. This third state is a deep cleaning state that allows for thorough cleaning of the water tank 20.

[0097] In this way, since the water flosser can switch between the first, second, and third states, the sixth embodiment, similar to the first to fifth embodiments, can also accelerate the evaporation of residual water droplets in the tank and achieve effective drainage and ventilation when placed vertically. That is, after using the water flosser, there is no need to completely detach the tank from the main body; maintaining the water flosser's vertical position is sufficient for effective drainage and ventilation. Therefore, the water flosser can be kept aesthetically pleasing and clean when placed.

[0098] Figure 14A This is a partial front view of the body 10 of the water flosser 1, showing in detail the structure of the lower side of the body 10. Figure 14B This is a partial perspective view of the water tank 20 of the water flosser 1, showing in detail the structure of the upper side of the water tank 20.

[0099] like Figures 12 to 14A As shown, ventilation holes 11 are provided on the lower side of the body 10. Preferably, a plurality of elongated ventilation holes 11 are provided on the lower side of the body 10 along the circumferential direction. Additionally, as... Figures 13 to 14A As shown, a locking portion 16 is provided on the lower outer wall of the main body 10, below the ventilation hole 11. (As shown...) Figure 14B As shown, at least two positioning parts 26 are provided on the upper inner wall of the water tank 20 along the vertical direction. Thus, the main body 10 and the water tank 20 can switch between a first state, a second state, and a third state by changing the engagement state between the engaging part 16 and the positioning part 26.

[0100] More specifically, the positioning part 26 includes a first positioning part 261 and a second positioning part 262 disposed above the first positioning part 261. When the water flosser 1 is in the first state, the engaging part 16 engages with the first positioning part 261, and the ventilation hole 11 is blocked by the upper inner wall of the water tank 20. When the water flosser 1 is in the second state, the engaging part 16 engages with the second positioning part 262, and the ventilation hole 11 is not blocked by the upper inner wall of the water tank 20 and is exposed, thus forming part of the drainage and ventilation path. When the water flosser 1 is in the third state, the engaging part 16 does not engage with the positioning part 26, so the water tank 20 is not connected to the body 10. In this embodiment, multiple elongated ventilation holes are provided along the circumferential direction on the lower side of the body, and there is no need to provide engaging protrusions and grooves between the ventilation holes. Therefore, the ventilation area in the second state is larger, which can improve the drainage and ventilation efficiency.

[0101] like Figures 14A to 14B As shown, preferably, in this embodiment, the engaging portion 16 consists of a plurality of body-side protrusions spaced apart from each other in the circumferential direction below the ventilation hole 11, and the positioning portion 26 consists of water tank-side protrusions arranged in the vertical direction on the upper inner wall of the water tank 20. For example, two sets of positioning portions 26 are arranged in a centrally symmetrical manner in the circumferential direction on the upper side of the water tank 20. Furthermore, for example, the first positioning portion 261 in the positioning portion 26 is the lowermost water tank-side protrusion, and the second positioning portion 262 consists of two water tank-side protrusions arranged above the first positioning portion 261 and separated by a narrow gap. Although not explicitly shown, in the first state where the engaging portion 16 is engaged with the first positioning portion 261, the upper edge of the engaging portion 16 abuts against the lower edge of the first positioning portion 261. In the second state where the engaging portion 16 is engaged with the second positioning portion 262, the upper edge of the engaging portion 16 abuts against the lower edge of the upper water tank side protrusion in the second positioning portion 262, and the lower edge of the engaging portion 16 abuts against the upper edge of the lower water tank side protrusion in the second positioning portion 262. Thus, the engaging portion 16 is positioned in a narrower gap between the two water tank side protrusions of the second positioning portion 262.

[0102] Furthermore, the circumferential length of the water tank side protrusion is, for example, longer than the circumferential gap between the multiple body side protrusions and shorter than the circumferential length of the vent 11. This allows for effective engagement between the water tank side protrusion and the body side protrusion, and... Figures 15A to 15B As shown, in the first state where the engaging part 16 is engaged with the first positioning part 261, the second positioning part 262 can slide into the ventilation hole 11, making the engaging action smoother.

[0103] Furthermore, the engagement between the engaging portion 16 and the positioning portion 26 is achieved by inserting and removing the water tank 20 relative to the body 10. That is, in the first state where the engaging portion 16 is engaged with the first positioning portion 261, pulling the water tank 20 downwards allows the first positioning portion 261 to pass over the engaging portion 16, thus engaging the second positioning portion 262 with the engaging portion 16, achieving the second state. In this second state, continuing to pull the water tank 20 downwards separates the second positioning portion 262 from the engaging portion 16, achieving the third state. Conversely, in the third state where the engaging portion 16 and the second positioning portion 262 are completely separated, inserting the water tank 20 upwards into the body 10 allows the engaging portion 16 to engage with the second positioning portion 262, achieving the second state. In this second state, continuing to insert the water tank 20 upwards into the body 10 allows the second positioning portion 262 to pass over the engaging portion 16, thus engaging the first positioning portion 261 with the engaging portion 16, achieving the first state.

[0104] It should be noted that in this embodiment, an engaging portion 16 is provided on the lower outer wall of the main body 10, and a positioning portion 26 is provided on the upper inner wall of the water tank 20. However, the positions of the engaging portion 16 and the positioning portion 26 can be interchanged; that is, the positioning portion can be provided on the lower inner wall of the main body, while the engaging portion can be provided on the upper outer wall of the water tank. Even when the positions of the engaging portion and the positioning portion are interchanged, their specific structures remain unchanged.

[0105] Figures 16A to 16B This is a partial longitudinal sectional view showing the water flosser 1. Figure 16A The positional relationship of the vent 11 relative to the water tank 20 in the second state of this embodiment is shown in detail. Figure 16B The airflow pattern based on this positional relationship is shown in detail in the second state.

[0106] like Figure 16B As shown, when the water flosser 1 is in the second state, the vent 11 of the main body 10 is not blocked by the inner wall of the upper side of the water tank 20 and is exposed, thus forming part of the drainage and ventilation path, and the water tank 20 is in communication with the outside air. Air enters the water tank 20 through the vent 11, causing air convection inside the water tank 20, and then flows out to the outside through the vent 11. That is to say, a drainage and ventilation path is formed between the water tank 20 and the main body 10, allowing air to circulate inside and outside the water tank 20 to remove water. This vent 11 forms part of the drainage and ventilation path, accelerating the evaporation rate of residual water droplets in the water tank. Multiple vent 11s are formed, thus the drainage and ventilation effect is good.

[0107] As can be seen from the first to sixth embodiments of the present disclosure described above, the oral irrigator of the present disclosure can accelerate the evaporation rate of residual water droplets in the water tank and achieve effective drainage and ventilation when placed in a vertical position.

[0108] Those skilled in the art will understand that the features described in the various embodiments and / or technical solutions of this disclosure can be combined or combined in various ways, even if such combinations or combinations are not explicitly described in this disclosure. In particular, the features described in the various embodiments and / or technical solutions of this disclosure can be combined or combined in various ways without departing from the spirit and teachings of this disclosure. All such combinations and / or combinations fall within the scope of this disclosure.

[0109] The embodiments of this disclosure have been described above. However, these embodiments are for illustrative purposes only and are not intended to limit the scope of this disclosure. Although various embodiments have been described above, this does not mean that the measures in the various embodiments cannot be used advantageously in combination. The scope of this disclosure is defined by the appended technical solutions and their equivalents. Without departing from the scope of this disclosure, those skilled in the art can make various substitutions and modifications, all of which should fall within the scope of this disclosure.

Claims

1. A water flosser comprising a body and a water tank detachably connected to the body, characterized in that, The lower end of the body is formed into a cylindrical shape with an opening. The upper end of the water tank is connected to the lower end of the main body. The oral irrigator can switch between a first state, a second state, and a third state. When the oral irrigator is in the first state, the water tank is connected to the body in a manner that prevents water from leaking out through the water tank. When the oral irrigator is in the second state, a drainage and ventilation path is formed between the water tank and the main body to allow air to circulate inside and outside the water tank and to remove water. When the water flosser is in the third state, the water tank is not connected to the main body.

2. The oral irrigator according to claim 1, characterized in that, Ventilation holes are provided circumferentially on the lower side of the main body.

3. The oral irrigator according to claim 2, characterized in that, The water tank and the main body can switch between the first state, the second state, and the third state by changing the engagement state between the engaging protrusion and the guide groove. The engaging protrusion is located on the upper inner wall of the water tank, and the guide groove is used to guide the engaging protrusion and is located on the lower outer wall of the main body at a position different from the vent hole. The engaging protrusion is located on the lower outer wall of the body at a position different from the ventilation hole, and the guide groove is used to guide the engaging protrusion and is located on the upper inner wall of the water tank.

4. The oral irrigator according to claim 3, characterized in that, The guide groove includes a guide groove opening into which the engaging protrusion slides, a first engaging portion for the engaging protrusion to engage and achieve positioning, and a second engaging portion for the engaging protrusion to engage and achieve positioning.

5. The oral irrigator according to claim 4, characterized in that, The first engaging portion includes a first locking member capable of locking the engaging protrusion. The second engaging portion includes a second locking member capable of locking the engaging protrusion.

6. The oral irrigator according to claim 5, characterized in that, When the water flosser is in the first state, the engaging protrusion is locked to the first engaging portion by the first locking member, and the vent is blocked by the upper inner wall of the water tank. When the water flosser is in the second state, the engaging protrusion is locked to the second engaging portion by the second locking member, and the vent is exposed without being blocked by the upper inner wall of the water tank, thus forming part of the drainage and ventilation path. When the water flosser is in the third state, the engaging protrusion does not engage with either the first engaging portion or the second engaging portion, so that the water tank is not connected to the body.

7. The oral irrigator according to claim 4, characterized in that, The first engaging portion and the second engaging portion are located on the same side or on both sides of the guide groove opening relative to the guide groove opening.

8. The oral irrigator according to claim 2, characterized in that, An internal thread is provided on the inner wall of the upper side of the water tank. An external thread is provided on the lower outer wall of the body, which is formed at a different position than the ventilation hole and can be screwed into the internal thread. The water tank and the body can switch between the first state, the second state, and the third state by changing the engagement state between the internal thread and the external thread.

9. The oral irrigator according to claim 8, characterized in that, When the water flosser is in the first state, the internal thread and the external thread are fully engaged, and the vent is blocked by the upper inner wall of the water tank. When the water flosser is in the second state, the internal thread and the external thread are partially engaged, and the vent is exposed without being blocked by the upper inner wall of the water tank, thus forming part of the drainage and ventilation path. When the water flosser is in the third state, the internal thread does not engage with the external thread, so the water tank is not connected to the body.

10. The oral irrigator according to claim 2, characterized in that, A locking portion is provided on the lower outer wall of the main body, below the ventilation hole. At least two positioning parts are provided on the upper inner wall of the water tank along the vertical direction. The positioning part includes a first positioning part and a second positioning part disposed above the first positioning part. The main body and the water tank can switch between the first state, the second state, and the third state by changing the engagement state between the engaging part and the positioning part.

11. The oral irrigator according to claim 10, characterized in that, When the water flosser is in the first state, the engaging part engages with the first positioning part, and the ventilation hole is blocked by the upper inner wall of the water tank. When the water flosser is in the second state, the engaging part engages with the second positioning part, and the ventilation hole is exposed without being blocked by the upper inner wall of the water tank, thus forming part of the drainage and ventilation path. When the water flosser is in the third state, the engaging part does not engage with the positioning part, so the water tank is not connected to the body.

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