Water flosser device

Abstract

The present disclosure provides a water flosser device, comprising: a main body provided with a through hole; a nozzle that can be detachably mounted relative to the through hole of the main body; a limiting bracket including a fixed end and a free end, the fixed end being relatively fixed to the main body; the free end being disposed adjacent to the nozzle and capable of swinging about the fixed end; and a button in contact with the limiting bracket, and as the button acts, the limiting bracket swings. In the water flosser device according to the embodiments of the present disclosure, the structures of the components are simple, facilitating the assembly between the components and facilitating the replacement of the water flosser nozzle.

Description

Technical Field

[0001] The present disclosure relates to the field of oral care instruments, and particularly to a water flosser device for cleaning interdental spaces. Background Art

[0002] Brushing teeth is the most popular tooth care behavior. However, brushing mainly solves the problem of cleaning the tooth surface. A water flosser device can efficiently clean food residues in tooth gaps, reduce bacterial reproduction, protect the gums, and effectively prevent dental plaque and gum diseases. It is an ideal tool for household interdental cleaning. The water flosser device is equipped with a nozzle, and the nozzle can usually be separated from the main body for replacement. At present, the nozzle release device of the water flosser device has many components and a scattered structure, which is not convenient for assembly. Summary of the Invention

[0003] To overcome the problems existing in the related art, the present disclosure provides a water flosser device.

[0004] According to an embodiment of the present disclosure, a water flosser device is provided, including a main body provided with a through hole; a nozzle that can be disassembled and installed relative to the through hole of the main body; a limit bracket including a fixed end and a free end, the fixed end being relatively fixed to the main body; the free end being disposed adjacent to the nozzle and being swingable about the fixed end; and a button in contact with the limit bracket, and as the button moves, the limit bracket swings.

[0005] In one embodiment, a return spring of the limit bracket is provided between the fixed end and the free end of the limit bracket.

[0006] In one embodiment, a protruding structure is provided between the fixed end and the free end of the limit bracket; the protruding structure protrudes in a direction away from the nozzle with respect to the fixed end and the free end of the limit bracket.

[0007] In one embodiment, a return spring of the limit bracket is provided on the protruding structure.

[0008] In one embodiment, the protruding structure is a V-shaped structure, a U-shaped structure, a C-shaped structure, or a serpentine structure.

[0009] In one embodiment, the limiting bracket includes a first arm portion and a second arm portion that are symmetric to each other; the fixed ends of the first arm portion and the second arm portion are relatively fixed to the body; the free ends of the first arm portion and the second arm portion are disposed adjacent to the nozzle, and can swing respectively with the fixed ends as axes; when the free ends of the first arm portion and the second arm portion swing away from the nozzle respectively, the nozzle is released; when the free ends of the first arm portion and the second arm portion swing towards the nozzle respectively, the nozzle is clamped by the free ends of the first arm portion and the second arm portion.

[0010] In one embodiment, between the fixed end and the free end of the first arm portion, a first protruding structure protruding in a direction away from the nozzle towards the free end of the first arm portion is provided; between the fixed end and the free end of the second arm portion, a second protruding structure protruding in a direction away from the nozzle towards the free end of the second arm portion is provided; the first protruding structure and the second protruding structure are symmetric to each other.

[0011] In one embodiment, the button includes: a button cap, a hollow cavity, and an elastic member. The first end of the hollow cavity is connected to the button cap, the second end of the hollow cavity is an opening, and the hollow cavity is formed as a conical surface in such a way that the width of the cross-section of the hollow cavity gradually decreases from the first end to the second end of the hollow cavity; the elastic member is located in the hollow cavity, the first end of the elastic member is connected to the button cap, and the other end of the elastic member passes through the opening at the second end of the hollow cavity.

[0012] In one embodiment, an inclined surface is provided on the limiting bracket; the inclined surface is disposed opposite to the conical surface of the hollow cavity.

[0013] In one embodiment, the fixed end of the limiting bracket is hinged to the body through a rotating shaft.

[0014] In one embodiment, the nozzle includes: a nozzle and a nozzle rod. One end of the nozzle rod is connected to the nozzle, the other end of the nozzle rod can be disassembled and installed relative to the through hole of the body, a limiting groove is provided at the other end of the nozzle rod, and the free end of the limiting bracket can enter the limiting groove.

[0015] In one embodiment, a sealing member is provided at the bottom end of the nozzle.

[0016] In one embodiment, the nozzle is detachably connected to the nozzle rod.

[0017] In one embodiment, a return position limiting structure is provided on the limiting bracket; the return position limiting structure is arranged adjacent to the free end; the return position limiting structure prevents the free ends of the limiting brackets from overlapping.

[0018] The technical solution provided by the embodiment of the present disclosure may include the following beneficial effects: In the water flosser device provided by the embodiment of the present disclosure, the nozzle is limited by the limiting bracket, and through the cooperation of the button and the limiting bracket, the disassembly and installation operations of the nozzle can be very easily realized. The structures of the limiting bracket and the button of the present disclosure are simple, and the nozzle can be quickly assembled on the water flosser device.

[0019] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. Brief Description of the Drawings

[0020] The drawings herein are incorporated into the specification and constitute a part of this specification, showing embodiments consistent with the present disclosure, and are used together with the specification to explain the principles of the present disclosure.

[0021] Figure 1 It is a schematic diagram of the nozzle contraction structure of a water flosser device shown according to a previous exemplary embodiment.

[0022] Figure 2 It is a three-dimensional exploded view of the nozzle contraction structure of a water flosser device shown according to a previous exemplary embodiment.

[0023] Figure 3 It is a schematic diagram of a water flosser retracting and releasing device shown according to an exemplary embodiment.

[0024] Figure 4 It is a schematic diagram of a limiting bracket shown according to an exemplary embodiment.

[0025] Figure 5 It is a schematic diagram of a button shown according to an exemplary embodiment.

[0026] Figure 6 It is a schematic diagram of a limiting bracket shown according to another exemplary embodiment.

[0027] Figure 7 It is a schematic diagram of a limiting bracket shown according to still another exemplary embodiment.

[0028] Figure 8 It is a cross-sectional view of a nozzle shown according to an exemplary embodiment. Detailed Embodiments

[0029] Exemplary embodiments will be described in detail herein, and examples thereof are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0030] Figure 1 It is a schematic diagram of the nozzle contraction structure of a water flosser device shown according to a previous exemplary embodiment.

[0031] As Figure 1 shown, in a nozzle contraction device of a related water flosser device, it includes a sleeve 038, a liquid output pipe 043, a sealing ring 038b, and a sliding member 014. Among them, the sleeve 038 and the liquid output pipe 043 can be coaxially arranged to form a nozzle chamber 038a. A force dividing inclined surface 014a is provided on the sliding member 014. The sealing ring 038b is located between the sleeve 038 and the body 01. A guiding groove 015, an elastic key 016, a spring assembly 017, an elastic outer cover 018, a ring lip 019, and a second permanent magnet 019a are provided on the body 01.

[0032] Furthermore, Figure 2 It is a three-dimensional exploded view of the nozzle of a water flosser device shown according to a previous exemplary embodiment.

[0033] As Figure 2 shown, the sleeve 038 includes an elastic notch 038c at the upper end and a convex edge 038d for locking the sliding member 014 on the inner hole step 14b, thereby connecting with the body 01. The force dividing inclined surface 014a of the sliding member 014 is clamped between two front and rear guiding ribs 14c, and the guiding ribs 14c can slide up and down in the guiding groove 015. The elastic key 016 will enter the ring groove 033 in the free state to limit the up and down free movement of the nozzle assembly 03. Both ends of the elastic key 016 include small inclined surfaces 016a, and the small inclined surfaces 016a cooperate with the force dividing inclined surface 014a.

[0034] Specifically, when the force dividing inclined surface 014a moves downward, the small plane 016b in the vertical direction of the elastic key 016 will open outward, thereby releasing the constraint on the axial movement of the nozzle assembly 03. The spring assembly 017 includes a spring 017a and a spring seat 017b, and the spring 017a provides a return force for the upward movement of the sliding member 014; the elastic outer cover 018 can be a prefabricated rubber sleeve sleeved on the sliding member 014 to provide functions such as dust prevention, or can be formed by secondary rubber coating on the basis of the sliding member 014.

[0035] As Figure 1 andFigure 2 As shown, in previous embodiments, the structural components of the nozzle contraction device on the water flosser device are numerous, scattered, and complex. When the user replaces the nozzle, the assembly is cumbersome and not easy to assemble.

[0036] Figure 3 It is a schematic diagram of a water flosser device shown in an exemplary embodiment.

[0037] As Figure 3 shown, in the embodiments of the present disclosure, a water flosser nozzle retracting and deploying device is provided, including: a main body 1, a button 2, a nozzle 3, and a limit bracket 4.

[0038] A through hole 21 is provided on the main body 1; the nozzle 3 is detachable and installable relative to the through hole 21 of the main body 1. That is, when using the nozzle 3, the nozzle 3 is installed in the through hole 21, and when replacing the nozzle 3, the nozzle 3 can be detached from the through hole 21.

[0039] The limit bracket 4 includes a fixed end 41 and a free end 42. The fixed end 41 is relatively fixed to the main body 1; the free end 42 is disposed adjacent to the nozzle 3 and can swing around the fixed end 41. The fixed end of the limit bracket 4 is fixed to the main body 1 through a rotating shaft 22. Therefore, the fixed end can rotate around the rotating shaft 22.

[0040] The button 2 can be in contact with the limit bracket 4. As the button 2 moves, the limit bracket 4 swings. Through the movement of the button 2, such as a pressing action or a releasing action, the limit bracket 4 swings, thereby realizing the disassembly and installation operations of the nozzle 3.

[0041] Furthermore, in the embodiments of the present disclosure, Figure 4 It is a schematic diagram of the limit bracket shown in an exemplary embodiment. Figure 4 It shows the state where the nozzle 3 is detached from the main body 1.

[0042] As Figure 4 shown, in the embodiments of the present disclosure, the static state of the fixed end 41 and the free end 42 of the limit bracket 4 without external force. The limit bracket 4 is disposed on the upper side surface of the main body 1 and extends along the length direction of the upper side surface.

[0043] A protruding structure 43 is provided between the fixed end 41 and the free end 42 of the limit bracket 4. The protruding structure 43 protrudes in the direction away from the nozzle head towards the free end 42 with respect to the fixed end 41 and the free end 42 of the limit bracket 4. The protruding structure 43 is located at the middle position of the limit bracket 4. It can be understood that the setting position of the protruding structure 43 is not limited to this. The protruding structure 43 can also be provided at a position close to the fixed end 41 or at a position close to the free end 42.

[0044] As Figure 4 shown, the limit bracket 4 includes a first arm portion 45 and a second arm portion 46 that are symmetric to each other. In the embodiment of the present disclosure, a protruding structure 43 is provided at the middle position between the first arm portion 45 and the second arm portion 46.

[0045] Furthermore, protruding structures 43 are symmetrically provided on the first arm portion 45 and the second arm portion 46 of the limit bracket 4. The first arm portion 45 is fixed to the main body 1 through a rotating shaft 22, and the second arm portion 46 is also fixed to the main body 1 through the rotating shaft 22. A hole matching the rotating shaft 22 is provided on the fixed end 41 of the limit bracket 4, and the fixed end 41 is sleeved on the rotating shaft through the hole to realize the rotation of the fixed end 41 relative to the main body 1.

[0046] In the embodiment of the present disclosure, the protruding structure 43 of the limit bracket 4 can be a V-shaped structure, a U-shaped structure, a C-shaped structure, or a serpentine structure. There is no specific limitation on the thickness of the limit bracket 4, as long as it can be matched with the limit groove 321 on the nozzle head 3. The limit bracket 4 can have a certain thickness, thereby increasing the clamping force on the nozzle head 3 accordingly. The forming material of the limit bracket 4 can be a hard plastic or a metal, etc. It can also be an elastic material with a certain toughness.

[0047] Furthermore, a return spring 44 is provided on the protruding structure 43. One end of the return spring 44 is connected to the protruding structure of the first arm portion 45, and the other end of the return spring 44 is connected to the protruding structure of the second arm portion 46.

[0048] Furthermore, a return position limiting structure 23 is provided on the main body 1. The return position limiting structure 23 is located near the through hole 21, and the return position limiting structure 23 mainly limits the two free ends 42 of the limit bracket 4 from overlapping with each other.

[0049] The button 2 is located on the side of the fixed end 41 of the limit bracket 4. In the free state, the free ends 42 of the limit bracket 4 enter the limit groove 321 on the nozzle head 3, and then the limit bracket 4 plays a role in fixing the nozzle head 3.

[0050] By highlighting the reset spring 44 provided on the protruding structure 43, there can be a certain restoring force in the stretched state, so that the free end 42 exerts a certain squeezing force on the limiting groove 321, which can play a better role in fixing the nozzle 3.

[0051] Figure 5 is a schematic diagram of a button shown in an exemplary embodiment. As Figure 5 shown, the button 2 includes a button cap 11, a hollow cavity 12, and an elastic member 121. Among them, the first end of the hollow cavity 12 is connected to the button cap 11, and the second end of the hollow cavity 12 is an opening. In a manner that the width of the cross-section of the hollow cavity 12 gradually decreases from the first end to the second end of the hollow cavity 12, the hollow cavity 12 is formed as a conical surface. The elastic member 121 is located inside the hollow cavity 12. The first end of the elastic member 121 is connected to the button cap 11, and the other end of the elastic member 121 passes through the opening at the second end of the hollow cavity 12. The length of the elastic member 121 is greater than the length of the hollow cavity 12, and its deformation restoration process can provide the resilience for the button 2 to reset.

[0052] Furthermore, the other end of the elastic member 121 passes through the opening at the second end of the hollow cavity 12, and can be fixedly connected to the body 1 or be in a freely extended state. As long as after the pressing force on the button 2 is released, it can provide resilience for the button 2, there are no restrictions on the installation method of the other end of the elastic member 121.

[0053] As Figure 4 shown, an inclined surface 47 is provided at the position of the limiting bracket 4 in contact with the button 2. The shape of the inclined surface 47 is adapted to the conical surface of the hollow cavity 12 of the button 2.

[0054] When the button 2 is pressed, the conical surface of the hollow cavity 12 of the button 2 contacts the inclined surface 47 on the limiting bracket 4. Since the hollow cavity 12 has a conical surface, when the button 2 is pressed downward, the limiting bracket 4 receives an outward pressure, and the limiting bracket 4 is forced to expand outward. At this time, the fixed end 41 of the limiting bracket 4 rotates around the rotating shaft 22, and its free end 42 comes out of the limiting groove 321, thereby releasing the fixing effect on the nozzle 3, and the nozzle 3 can be released.

[0055] When the button 2 is released, under the rebounding action of the pressed elastic member 121, the button 2 resets, thereby releasing the outward pressure applied to the limiting bracket 4. At the same time, under the rebounding action of the reset spring 44 on the protruding structure 43 of the limiting bracket 4, the free end 42 moves in the direction close to the through hole 21, and is blocked by the return position limiting structure 23 during the movement process, so that the free end 42 stops moving and prevents the coincidence of the free end 42.

[0056] In the embodiment of the present disclosure, a button limiting feature 111 is provided on the button 2. When the button 2 is pressed, the wedge surface or conical surface end of the button 2 opens the limiting bracket 4, so that the free end 42 of the limiting bracket 4 moves. The elastic component 121 in the hollow cavity 12 contracts and deforms. When the button 2 is released, the hollow cavity elastic component 121 deforms and recovers due to its own characteristics, thereby rebounding the button 2. The free end 42 of the limiting bracket 4 moves in the opposite direction. The button limiting feature 111 on the button 2 is blocked by the body 1, and the button 2 in the rebound is forced to stop, thereby achieving the purpose of resetting the button 2.

[0057] In the embodiment of the present disclosure, the elastic component 121 may be a spring or a spring sheet, etc., for the purpose of realizing the rebound and reset of the button 2, but is not limited to a spring or a spring sheet.

[0058] In the disclosed embodiment, the designed number of the rotating shafts 22 matches the number of the arms of the limiting bracket 4 , that is, in this embodiment, there are two of them.

[0059] Furthermore, Figure 6 is a schematic diagram of a limiting bracket according to another exemplary embodiment.

[0060] like Figure 6 As shown, in the embodiment of the present disclosure, the fixed ends 41 of the two arms of the limiting bracket 4 can be fixed on the same rotating shaft 22 in an overlapping manner, and can move relative to each other around the rotating shaft 22 under the traction of the return spring 44 on the protruding structure 43. The release and fixation of the nozzle in the embodiment of the present disclosure can also be achieved.

[0061] Furthermore, in the embodiment of the present disclosure, the reset spring 44 may also be replaced by a spring or a rubber band, etc., as long as the limit bracket 4 can rebound and fix and release the nozzle 3 in terms of function.

[0062] Furthermore, in the embodiment of the present disclosure, the return limiting structure 23 is arranged on the body 1. It is understandable that the arrangement position of the return limiting structure 23 is not limited to the position indicated in the schematic diagram of the embodiment of the present disclosure, and the schematic diagram is only a schematic mark. The return limiting structure 23 can also be arranged on the free end 42 of the limit bracket 4, mainly to limit the closure of the two free ends 42 of the limit bracket 4, avoid covering the through hole 21, thereby ensuring that the bottom end of the nozzle 3 passes through the through hole 21, and further allows the free end 42 to enter the limit groove 321 of the nozzle 3, thereby fixing the nozzle 3.

[0063] Furthermore, Figure 7 is a schematic diagram of a limiting bracket according to yet another exemplary embodiment.

[0064] It should be noted that the schematic diagrams shown in the embodiments of the present disclosure are only for illustrative purposes. In Figure 7 the embodiment shown, the free end 42 of the limiting bracket 4 should be understood to be at the edge of the through hole 21 for the purpose of disassembling and installing the nozzle 3.

[0065] In the embodiment of the present disclosure, the limiting bracket 4 is a V-shaped elastic structure, the fixed end 41 is fixed on the body 1, and the button 2 is also arranged on the side of the fixed end 41. By setting the V-shaped angle of the limiting bracket 4, in a state where the limiting bracket 4 is not affected by any external force, the free end 42 of the limiting bracket 4 enters the limiting groove 321 of the nozzle 3 and fixes the nozzle 3. When the nozzle 3 is released, by pressing the button 2, an outward pressure is applied to the limiting bracket 4, whereby the free end 42 of the limiting bracket 4 moves outward, so that the nozzle 3 can be released. When the pressure from the button 2 is withdrawn, due to the restoring characteristic of the limiting bracket 4, the free end 42 of the limiting bracket 4 returns to its original position, and the fixing effect on the nozzle 3 can be achieved again. In the embodiment of the present disclosure, there is no need to additionally provide a return limiting structure 23 to limit the free end of the limiting bracket 4. In addition, the return of the free end 42 can be achieved through the deformation and restoration characteristic of the limiting bracket 4, and the fixing and pressing of the nozzle 3 can be achieved, without additionally arranging a return spring 44, and the structure is further simplified.

[0066] It can be understood that in the embodiment of the present disclosure, the limiting bracket 4 can be fixed to the body 1, and there is no need to additionally provide a rotating shaft. The fixing of the limiting bracket 4 and the body 1 can be achieved by means of screw fixing, or glue dot fixing, or welding fixing, etc. At this time, the fixing and release of the nozzle 3 are achieved only through the elastic deformation of the strip-shaped limiting bracket 4.

[0067] Furthermore, in the embodiment of the present disclosure, the shape of the limiting bracket 4 is not limited to the V-shaped elastic structure, and can also be a U-shaped elastic structure, a C-shaped elastic structure, or a snake-shaped elastic structure. The limiting bracket 4 is an elastic structure, not limited to a specific structure, for the purpose of implementing the embodiment of the present disclosure.

[0068] In an embodiment of the present disclosure, a water flosser device is provided. A limiting bracket is provided on the main body. The limiting bracket includes a free end and a fixed end, and the fixed end is relatively fixed to the water flosser main body. By pressing a button, the lower end of the button can act on the limiting bracket, and under the action of the pressing force, the movable end of the limiting bracket can move relative to the through-hole position. When the button is released, the movable end moves in the reverse direction relative to the through-hole position. By limiting the nozzle through the movable end of the limiting bracket, the purpose of releasing and fixing the nozzle is achieved, that is, the disassembly and installation operations of the nozzle are realized. In the embodiment of the present disclosure, the structures of the components of the water flosser device are simple, and it is easier to assemble the components. By using the water flosser device of the present disclosure, when replacing the water flosser nozzle, it is simple, convenient and faster.

[0069] Further, Figure 8 It is a sectional view of the nozzle shown in an exemplary embodiment.

[0070] As Figure 8 shown, the nozzle 3 includes a nozzle 31 and a nozzle rod 32. One end of the nozzle rod 32 is connected with the nozzle 31, and a limiting groove 321 is provided at the other end of the nozzle rod 32. The free end 42 of the limiting bracket 4 can enter the limiting groove 321. A sealing member 33 is provided on the nozzle 3. The sealing member 33 can be a silicone sleeve, and its shape can be conical. It is mainly provided at the other end of the nozzle 3, that is, mainly sleeved on the through-hole on the main body 1, mainly to prevent water, dust, etc. from entering the inside of the main body 1 through the through-hole. On the other hand, it can protect the connection between the free end 42 of the limiting bracket 4 and the nozzle 3, and can also play a role in stabilizing the nozzle 3.

[0071] Further, the sealing member 33 is not limited to the structure of a silicone sleeve, and its shape is not limited to conical. For example, the sealing member 33 can be a structure with a suction cup at the bottom. The suction cup can adsorb on the main body 1, which can play a role in dust prevention, waterproofing and stabilizing the nozzle 3.

[0072] In the embodiment of the present disclosure, the connection between the nozzle 31 and the nozzle rod 32 can be a detachable connection such as a screw or a buckle, or an integrally formed structure. Among them, the detachable connection method is more convenient for replacing the nozzle 31. The water spraying method of the nozzle 31 can be set in various ways, such as a water column shape, a spray shape, etc. The water column shape can be water columns of different thicknesses. The different water spraying methods of the nozzle 31 increase different function selections. When cleaning debris between teeth, a water column-shaped nozzle can be selected. When cleaning the tooth surface, a spray-shaped nozzle can be selected. The functions are diversified.

[0073] It should be understood that those skilled in the art can use different methods for each specific application to implement the described functions, but such implementation should not be considered to exceed the scope of the technical solutions of the embodiments of the present disclosure.

[0074] It can be understood that unless otherwise specified in the present disclosure, "connection" includes direct connection without other components between two parties, and also includes indirect connection with other components between two parties.

[0075] It can be further understood that in the present disclosure, "a plurality of" means two or more, and other quantifiers are similar thereto. "And / or" describes the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally represents an "or" relationship between the front and rear associated objects. The singular forms of "a", "the", and "said" are also intended to include the plural forms unless the context clearly indicates otherwise.

[0076] It can be further understood that the terms "first", "second", etc. are used to describe various information, but such information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other, and do not represent a specific order or importance. In fact, the expressions such as "first" and "second" can be used interchangeably. For example, without departing from the scope of the present disclosure, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as the first information.

[0077] It can be further understood that although the operations are described in a specific order in the drawings in the embodiments of the present disclosure, it should not be understood that these operations are required to be performed in the specific order or serial order shown, or that all the operations shown are required to be performed to obtain the desired result. In a specific environment, multitasking and parallel processing may be advantageous.

[0078] Those skilled in the art will readily think of other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present disclosure, which follow the general principles of the present disclosure and include the common general knowledge or conventional technical means in the technical field not disclosed in the present disclosure. The specification and examples are only considered exemplary, and the true scope and spirit of the present disclosure are pointed out by the following claims.

[0079] It should be understood that the present disclosure is not limited to the exact structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present disclosure is only limited by the appended claims.

Claims

1. A water flosser device, characterized in that, comprising: a main body provided with a through hole and a return position limiting structure; a nozzle that can be disassembled and installed relative to the through hole of the main body; a limiting bracket including a fixed end and a free end, the fixed end being relatively fixed to the main body; the free end being disposed adjacent to the nozzle and being swingable about the fixed end as a center; and a button in contact with the limiting bracket, and as the button acts, the limiting bracket swings; the button includes a button cap, a hollow cavity and an elastic member, the hollow cavity being formed as a conical surface, and the elastic member being located in the hollow cavity; an inclined surface is provided on the limiting bracket, and the inclined surface is disposed opposite to the conical surface of the hollow cavity; a return spring of the limiting bracket is provided between the fixed end and the free end of the limiting bracket; in the direction from the fixed end to the free end of the limiting bracket, the inclined surface, the return spring and the return position limiting structure are sequentially provided.

2. The water flosser device according to claim 1, characterized in that, a protruding structure is provided between the fixed end and the free end of the limiting bracket; the protruding structure protrudes in the direction away from the nozzle with respect to the fixed end and the free end of the limiting bracket towards the free end.

3. The water flosser device according to claim 2, characterized in that, a return spring of the limiting bracket is provided on the protruding structure.

4. The water flosser device according to claim 2, characterized in that, the protruding structure is a V-shaped structure, a U-shaped structure, a C-shaped structure, or a serpentine structure.

5. The water flosser device according to claim 1, characterized in that, the limiting bracket includes a first arm portion and a second arm portion that are symmetric to each other; the fixed end of the first arm portion and the fixed end of the second arm portion are relatively fixed to the main body; the free end of the first arm portion and the free end of the second arm portion are disposed adjacent to the nozzle, and can swing respectively about the fixed end as an axis; when the free ends of the first arm portion and the second arm portion swing away from the nozzle respectively, the nozzle is released; when the free ends of the first arm portion and the second arm portion swing towards the nozzle respectively, the nozzle is clamped by the free ends of the first arm portion and the second arm portion.

6. The water flosser device according to claim 5, characterized in that, a first protruding structure protruding in the direction away from the nozzle with respect to the free end of the first arm portion is provided between the fixed end and the free end of the first arm portion; a second protruding structure protruding in the direction away from the nozzle with respect to the free end of the second arm portion is provided between the fixed end and the free end of the second arm portion; the first protruding structure and the second protruding structure are symmetric to each other.

7. The water flosser device according to claim 1, characterized in that, The first end of the hollow cavity is connected to the button cap, and the second end of the hollow cavity is an opening. The hollow cavity is formed as a conical surface in such a way that the width of the cross-section of the hollow cavity gradually decreases from the first end to the second end of the hollow cavity. The first end of the elastic member is connected to the button cap, and the other end of the elastic member passes through the opening at the second end of the hollow cavity.

8. The water flosser device according to claim 1, wherein, The fixed end of the limiting bracket is hinged to the body through a rotating shaft.

9. The water flosser device according to claim 1, wherein, The nozzle head includes: a nozzle; and a nozzle rod, one end of the nozzle rod is connected to the nozzle, and the other end of the nozzle rod can be disassembled and installed relative to the through hole of the body. A limiting groove is provided at the other end of the nozzle rod, and the free end of the limiting bracket can enter the limiting groove.

10. The water flosser device according to claim 1, wherein, A sealing member is provided at the bottom end of the nozzle head.

11. The water flosser device according to claim 9, wherein, The nozzle is detachably connected to the nozzle rod.

12. The water flosser device according to claim 1, wherein, A return position limiting structure is provided on the limiting bracket; The return position limiting structure is provided adjacent to the free end; The return position limiting structure prevents the free ends of the limiting bracket from overlapping.

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