Water supply device and oral cleaning equipment

Abstract

The present application discloses a water supply device and an oral cleaning device, which relate to the field of oral cleaning technology. The water supply device includes a water tank, a receiving cavity is formed in the water tank, and the water tank includes a spiral telescopic mechanism, and the spiral telescopic mechanism includes a contracted state and an extended state; when switching between the contracted state and the extended state, the spiral telescopic mechanism is used to adjust the volume of the receiving cavity to change continuously. The water supply device and oral cleaning device provided by the present application can realize multiple switching of the volume size of the receiving cavity in the water tank to meet the diverse needs of users.

Description

Technical Field

[0001] The present application relates to the technical field of oral cleaning, and in particular to a water supply device and oral cleaning equipment. Background Art

[0002] As an oral cleaning auxiliary device, an electric water flosser uses water with a certain water pressure to flush the oral cavity to wash away the debris in the oral cavity and achieve oral cleaning. However, existing electric water flossers usually use a relatively fixed water tank, and when filling water, it is impossible to switch between different volumes. Summary of the invention

[0003] The present application provides a water supply device and an oral cleaning device to achieve continuous change of the water tank volume.

[0004] This application provides:

[0005] A water supply device comprises a water tank, wherein a receiving cavity is formed in the water tank, the water tank comprises a spiral telescopic mechanism, and the spiral telescopic mechanism comprises a contracted state and an extended state;

[0006] When switching between the contracted state and the extended state, the spiral telescopic mechanism is used to adjust the volume of the accommodating chamber to change continuously.

[0007] In some possible implementations, the spiral telescopic mechanism includes a plurality of spiral telescopic units connected in sequence, and the spiral telescopic units include a folded state and an unfolded state.

[0008] In some possible implementations, the spiral telescopic unit includes a folding assembly, a transition portion, and a hand-held portion that are connected in sequence;

[0009] When the spiral telescopic unit is in the folded state, the folding assembly protrudes toward the accommodating cavity, and the adapter is clamped between the hand-held portion and the hand-held portion of the adjacent spiral telescopic unit, and the adjacent spiral telescopic unit is the spiral telescopic unit connected to the folding assembly.

[0010] In some possible implementations, when the spiral telescopic unit is in the folded state, the hand-held portion is protruded relative to the adapter portion in a direction away from the axis L of the water tank.

[0011] In some possible implementations, a side of the hand-held portion close to the adapter portion forms a first force-bearing surface, and a side of the hand-held portion away from the adapter portion forms a second force-bearing surface.

[0012] In some possible implementations, an embedding groove is further provided on a side of the hand-held portion close to the accommodating cavity, and the embedding grooves of adjacent spiral telescopic units are connected.

[0013] In some possible implementations, the water supply device further includes a water pipe, which is embedded in the plurality of inlay grooves and spirally arranged in the water tank.

[0014] In some possible implementations, the folding assembly includes a first folding portion and a second folding portion, wherein the second folding portion is connected between the first folding portion and the transition portion;

[0015] When the spiral telescopic unit is in the unfolded state, the second folding portion is arranged obliquely relative to the axis L of the water tank;

[0016] The second folding portion gradually inclines toward the direction approaching the axis L from the transition portion toward the first folding portion.

[0017] In some possible implementations, when the spiral telescopic mechanism is in the extended state, the folding mark width n and the pitch m of the spiral telescopic mechanism satisfy:

[0018] In addition, the present application also provides an oral cleaning device, including the water supply device provided in the present application.

[0019] The beneficial effects of the present application are as follows: the present application proposes a water supply device and an oral cleaning device, and the oral cleaning device includes the water supply device. Among them, the water supply device includes a water tank, a accommodating chamber is formed in the water tank, and the water tank includes a spiral telescopic mechanism, and the spiral telescopic mechanism can realize a continuous change in the volume of the accommodating chamber when switching between a contracted state and an extended state. It can be understood that when the spiral telescopic mechanism is in an extended state, the volume of the accommodating chamber is the largest. When the spiral telescopic mechanism is in a contracted state, the volume of the accommodating chamber is the smallest. In use, the user can adjust the state of the spiral telescopic mechanism as needed, and can also interrupt the state switching process of the spiral telescopic mechanism, so that the accommodating chamber can be maintained at any volume size between the maximum volume and the minimum volume. That is, when filling the cleaning liquid, the user can adjust the volume of the water tank as needed to meet the diverse needs of the user. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 A schematic diagram of the three-dimensional structure of an oral cleaning device in some embodiments is shown;

[0022] Figure 2 A schematic diagram of an exploded structure of an oral cleaning device in some embodiments is shown;

[0023] Figure 3 A schematic diagram of the three-dimensional structure of the water supply device in some embodiments when in a contracted state is shown;

[0024] Figure 4 A schematic cross-sectional structure diagram of a water supply device in a contracted state in some embodiments is shown;

[0025] Figure 5 A schematic cross-sectional structure diagram of a water tank in a contracted state in some embodiments is shown;

[0026] Figure 6 A schematic diagram of the structure of the water supply device in some embodiments when in an extended state is shown;

[0027] Figure 7 A schematic cross-sectional structure diagram of a water tank in an extended state in some embodiments is shown;

[0028] Figure 8 Shows Figure 7 A schematic diagram of the partially enlarged structure of part A;

[0029] Fig. 9 A schematic diagram of a partial cross-sectional structure of a spiral telescopic unit in a folded state in some embodiments is shown;

[0030] Fig.10 A schematic diagram of the dimensions of a water tank in some embodiments is shown;

[0031] Fig.11 A schematic cross-sectional structure diagram of a water supply device in an extended state in some embodiments is shown;

[0032] Fig.12 A schematic diagram of the structure of the water delivery pipe in a contracted state in some embodiments is shown;

[0033] Fig.13 A schematic diagram of the structure of the water pipe in the extended state in some embodiments is shown.

[0034] Description of main component symbols:

[0035] 100-water supply device; 10-water tank; 10a-accommodating chamber; 11-connecting pipe; 12-spiral telescopic mechanism; 12a-contracted state; 12b-extended state; 121-spiral telescopic unit; 121a-folded state; 121b-unfolded state; 12101-first spiral telescopic unit; 12102-second spiral telescopic unit; 12103-third spiral telescopic unit; 1211-hand-held part; 1212-adapter; 1213-folding assembly; 12131-first folding part; 12132-second folding part; 12111-first force-bearing surface; 12112-second force-bearing surface; 12113-inlay groove; 13-bottom shell; 20-water pipe; 20a-water inlet end; 20b-water outlet end; 21-first connecting nozzle; 200-host; 201-second connecting nozzle; 300-nozzle. DETAILED DESCRIPTION

[0036] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0037] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying 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.

[0038] 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. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0039] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0040] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0041] An oral cleaning device is provided in the embodiment, which can provide a cleaning function for the oral cavity. Specifically, the oral cleaning device can rinse the user's oral cavity to remove food residues near the teeth and reduce the occurrence of oral problems of the user.

[0042] like Figure 1 and Figure 2 As shown, the oral cleaning device includes a water supply device 100, a main unit 200 and a nozzle 300. The water supply device 100 can be used to store cleaning liquids such as clean water and physiological saline, and the water supply device 100 can be installed at one end of the main unit 200 and communicated with the main unit 200. The nozzle 300 can be installed at the other end of the main unit 200 and communicated with the main unit 200. It can be understood that a water pump (not shown) can be provided in the main unit 200, the input end of the water pump is communicated with the water supply device 100, and the output end of the water pump is communicated with the nozzle 300.

[0043] During operation, the end of the nozzle 300 away from the host 200 can be extended into the user's mouth, and the water pump can pressurize the cleaning liquid in the water supply device 100 and transport it to the nozzle 300, and the nozzle 300 sprays the cleaning liquid to the corresponding position of the mouth to achieve oral cleaning.

[0044] like Figure 3 and Figure 6 As shown, the water supply device 100 includes a water tank 10, wherein the water tank 10 is a hollow structure to form a receiving chamber 10a, and the receiving chamber 10a can be used to store cleaning liquid.

[0045] In some embodiments, the water tank 10 is generally cylindrical. The water tank 10 may include a spiral telescopic mechanism 12. It is understandable that the spiral telescopic mechanism 12 can perform extension and contraction actions to achieve a telescopic effect. Accordingly, the spiral telescopic mechanism 12 includes a contracted state 12a and an extended state 12b. When the spiral telescopic mechanism 12 is in the contracted state 12a, the volume of the accommodating chamber 10a is the smallest. When the spiral telescopic mechanism 12 is in the extended state 12b, the volume of the accommodating chamber 10a is the largest.

[0046] In use, the spiral telescopic mechanism 12 can be switched back and forth between the contracted state 12a and the extended state 12b to achieve a change in the volume of the accommodating chamber 10a. In the process of the spiral telescopic mechanism 12 switching from the contracted state 12a to the extended state 12b, or from the extended state 12b to the contracted state 12a, the volume of the accommodating chamber 10a can be continuously changed.

[0047] Therefore, during the extension or contraction of the spiral telescopic mechanism 12, the telescopic action of the spiral telescopic mechanism 12 can be interrupted as needed, so that the volume of the accommodating chamber 10a is maintained at any desired volume size between the minimum volume and the maximum volume.

[0048] Thus, the user can make the spiral telescopic mechanism 12 perform corresponding telescopic actions as needed, so that the water tank 10 can provide the user with a desired size of the accommodating chamber 10a to store an appropriate amount of cleaning liquid. It can be understood that when the oral cleaning device is not in use, the user can put the spiral telescopic mechanism 12 in the retracted state 12a to reduce the occupied space and facilitate storage and carrying.

[0049] In the prior art, a conical variable volume water tank is usually used. After the variable volume water tank is shrunk, the variable volume water tank can present a circular plate-shaped structure. When the variable volume water tank is unfolded, it can only be fully opened. That is, the existing variable volume water tank only has two usage states of maximum volume or minimum volume, and cannot provide a variety of volume changes, thereby failing to meet the diverse needs of users.

[0050] In this embodiment, the spiral telescopic mechanism 12 is used to achieve continuous and uninterrupted changes in the volume of the accommodating chamber 10a, so that the volume of the accommodating chamber 10a can stay at the maximum volume, the minimum volume, and any volume size between the maximum volume and the minimum volume, thereby meeting the diverse needs of users and having higher versatility.

[0051] like Figure 1 and Figure 3As shown, in some embodiments, the water tank 10 further includes a connecting pipe 11 and a bottom shell 13. The connecting pipe 11 and the bottom shell 13 are respectively connected to the two ends of the spiral telescopic mechanism 12, and the connecting pipe 11, the spiral telescopic mechanism 12 and the bottom shell 13 cooperate to form a receiving cavity 10a. In the embodiment, the connecting pipe 11, the spiral telescopic mechanism 12 and the bottom shell 13 can be integrally formed by injection molding, stamping, etc.

[0052] In the embodiment, the water tank 10 has an opening structure to facilitate the injection of cleaning liquid into the accommodating chamber 10a. The opening structure can be provided at the end of the connecting pipe 11 away from the spiral telescopic mechanism 12, and correspondingly, the end of the water tank 10 close to the bottom shell 13 is a closed structure.

[0053] The end of the connecting tube 11 away from the spiral telescopic mechanism 12 can be used to connect to the main unit 200, that is, the opening structure of the water tank 10 is connected to the main unit 200. In the embodiment, the connecting tube 11 is detachably connected to the main unit 200, so that the water tank 10 can be removed from the main unit 200 to inject cleaning liquid and other operations. Exemplarily, the connecting tube 11 and the main unit 200 can be connected by screw connection, and accordingly, the inner wall of the connecting tube 11 can be provided with an internal thread (not shown in the figure), and the main unit 200 is provided with a matching external thread (not shown in the figure).

[0054] In other embodiments, the connection pipe 11 and the main unit 200 may be detachably connected by means of a snap connection, etc. Of course, in other embodiments, the connection pipe 11 and the main unit 200 may be non-detachably connected, and accordingly, a water inlet may be provided around the water tank 10 to facilitate the injection of cleaning liquid.

[0055] It can be understood that the connection tube 11 and the host 200 are sealed to avoid problems such as leakage. Accordingly, the connection between the connection tube 11 and the host 200 can be provided with a sealing gasket (not shown) and other structures to achieve sealing of the connection position.

[0056] like Figure 3 and Figure 6 As shown, the spiral telescopic mechanism 12 may be composed of a plurality of spiral telescopic units 121 connected in sequence. In the embodiment, the spiral structure that rotates 360° around the axis L of the water tank 10 may be a unit, namely a spiral telescopic unit 121.

[0057] like Figures 5 to 9 As shown, in the embodiment, the spiral telescopic unit 121 may include a folded state 121a and an unfolded state 121b. By folding and unfolding each spiral telescopic unit 121, the spiral telescopic mechanism 12 can be extended and retracted, thereby achieving a change in the volume of the accommodating chamber 10a.

[0058] like Figure 6As shown, the spiral telescopic unit 121 may include a handheld portion 1211, an adapter portion 1212 and a folding assembly 1213, wherein the adapter portion 1212 is connected between the handheld portion 1211 and the folding assembly 1213. It can be understood that in a spiral telescopic unit 121, a side of the handheld portion 1211 away from the adapter portion 1212 may be connected to the folding assembly 1213 in an adjacent spiral telescopic unit 121, and a side of the folding assembly 1213 away from the adapter portion 1212 may be connected to the handheld portion 1211 in another adjacent spiral telescopic unit 121.

[0059] like Fig.11 As shown, illustratively, the first spiral telescopic unit 12101, the second spiral telescopic unit 12102 and the third spiral telescopic unit 12103 are connected in sequence. In the second spiral telescopic unit 12102, the side of the hand-held portion 1211 away from the adapter 1212 is connected to the folding component 1213 of the third spiral telescopic unit 12103, and the side of the folding component 1213 away from the adapter 1212 is connected to the hand-held portion 1211 of the first spiral telescopic unit 12101.

[0060] like Figure 7 and Figure 8 As shown, the folding assembly 1213 includes a first folding portion 12131 and a second folding portion 12132 , wherein the second folding portion 12132 is connected between the first folding portion 12131 and the transition portion 1212 .

[0061] In some embodiments, when the spiral telescopic unit 121 is in the unfolded state 121b, the first folding portion 12131 is arranged parallel to the axis L, and the second folding portion 12132 is arranged obliquely relative to the axis L. Specifically, the second folding portion 12132 is gradually inclined toward the direction close to the axis L from the end close to the adapter portion 1212 to the end close to the first folding portion 12131.

[0062] In other embodiments, the first folding portion 12131 may also be arranged to be inclined relative to the axis L. Specifically, the first folding portion 12131 gradually inclines in a direction away from the axis L from an end close to the second folding portion 12132 to an end away from the second folding portion 12132. Alternatively, the first folding portion 12131 gradually inclines in a direction close to the axis L from an end close to the second folding portion 12132 to an end away from the second folding portion 12132, and the inclination of the first folding portion 12131 relative to the axis L is less than the inclination of the second folding portion 12132 relative to the axis L.

[0063] Recombination Fig. 9When the spiral telescopic unit 121 is in the folded state 121a, the second folded portion 12132 is folded with the first folded portion 12131. The first folded portion 12131 gradually tilts away from the axis L from one end close to the second folded portion 12132 to one end away from the second folded portion 12132. The second folded portion 12132 is parallel to the first folded portion 12131, and a side of the second folded portion 12132 away from the accommodating cavity 10a is attached to a side of the first folded portion 12131 away from the accommodating cavity 10a.

[0064] During the folding process, the first folding portion 12131 may be tilted under the drive of the second folding portion 12132, wherein the end of the first folding portion 12131 close to the second folding portion 12132 moves toward the direction close to the axis L, and at the same time, the second folding portion 12132 is folded relative to the first folding portion 12131 until the second folding portion 12132 is attached to the side of the first folding portion 12131 away from the accommodating cavity 10a.

[0065] During the folding process of the second folding portion 12132 and the first folding portion 12131, the height of the water tank 10 gradually decreases, and accordingly, the volume of the accommodating chamber 10a gradually decreases, so as to adjust the volume of the accommodating chamber 10a. It can be understood that when the spiral telescopic unit 121 switches from the folded state 121a to the unfolded state 121b, the second folding portion 12132 and the first folding portion 12131 are unfolded, the height of the water tank 10 gradually increases, and the volume of the accommodating chamber 10a also gradually increases.

[0066] like Figure 8 and Fig. 9 As shown, in some embodiments, when the spiral telescopic unit 121 is in the unfolded state 121b and the folded state 121a, the adapter 1212 can be parallel to the axis L. It can be understood that during the state switching process of the spiral telescopic unit 121, the adapter 1212 can always be parallel to the axis L, and the adapter 1212 can move along the axis L to push the second folding portion 12132 and the first folding portion 12131 to move until the second folding portion 12132 is folded to fold and fit with the first folding portion 12131.

[0067] like Fig. 9 and Fig.10 As shown, in some embodiments, the outer diameter d1 of the hand-held portion 1211 may be greater than the outer diameter d2 of the adapter portion 1212 , so that a step structure may be formed at the connection between the hand-held portion 1211 and the adapter portion 1212 .

[0068] In some embodiments, the outer diameter d1 of the hand-held portion 1211 is larger than the maximum outer diameter d3 of the folding assembly 1213, and the outer diameter d2 of the adapter portion 1212 may also be larger than the maximum outer diameter d3 of the folding assembly 1213, so that when the spiral telescopic unit 121 is in the folded state 121a, the folding assembly 1213 can be smoothly accommodated in a direction close to the axis L. In addition, a step structure may also be formed at the connection between the first folding portion 12131 and the hand-held portion 1211.

[0069] When the spiral telescopic unit 121 is in the folded state 121a, the adapter 1212 may be sandwiched between two adjacent handheld portions 1211, and the handheld portion 1211 protrudes relative to the adapter 1212 in a direction away from the axis L. Exemplarily, when the second spiral telescopic unit 12102 is in the folded state 121a, the adapter 1212 in the second spiral telescopic unit 12102 may be sandwiched between the handheld portion 1211 of the first spiral telescopic unit 12101 and the handheld portion 1211 of the second spiral telescopic unit 12102.

[0070] Thus, when the spiral telescopic unit 121 is in the folded state 121a, a U-shaped groove structure can be formed between two adjacent spiral telescopic units 121, so that the user can identify the folded position of the spiral telescopic mechanism 12 and facilitate the user to perform the unfolding action. It can be understood that when the spiral telescopic unit 121 switches state, the outer diameter of the adapter 1212 remains unchanged.

[0071] Correspondingly, in the same spiral telescopic unit 121, a first force-bearing surface 12111 is formed on the side of the hand-held part 1211 close to the adapter part 1212, and a second force-bearing surface 12112 is formed on the side of the hand-held part 1211 away from the adapter part 1212. The first force-bearing surface 12111 and the second force-bearing surface 12112 are parallel.

[0072] When the spiral telescopic unit 121 needs to be unfolded or folded, the user's fingers can act on the first force-bearing surface 12111 and the second force-bearing surface 12112 to fold or unfold the first folding portion 12131 and the second folding portion 12132. Exemplarily, when the second spiral telescopic unit 12102 needs to be unfolded, the user's fingers can act on the first force-bearing surface 12111 of the second spiral telescopic unit 12102 and the second force-bearing surface 12112 of the first spiral telescopic unit 12101 from the U-shaped groove structure position to unfold and separate the first folding portion 12131 and the second folding portion 12132 in the second spiral telescopic unit 12102.

[0073] like Figure 3 and Figure 6As shown, in some embodiments, the number of the spiral telescopic units 121 can be set as required. For example, the spiral telescopic mechanism 12 can include two, three, four, or other number of spiral telescopic units 121.

[0074] like Figure 7 As shown, in some embodiments, when the spiral telescopic mechanism 12 is in the extended state 12b, the folding mark width n and the pitch m of the spiral telescopic mechanism 12 satisfy, For example, the ratio of the folding mark width n to the pitch m of the spiral telescopic mechanism 12 can be 1:3, 4:9, 1:2, 5:9, 2:3, etc. Thus, the number of spiral telescopic units 121 can be adapted to the height of the water tank 10, so that the number of spiral telescopic units 121 is reasonable, which facilitates the continuous change of the volume of the accommodating chamber 10a.

[0075] like Figure 4 , Figures 11 to 13 As shown, in some embodiments, the water supply device 100 further includes a water delivery pipe 20. The water delivery pipe 20 is spirally arranged in the water tank 10.

[0076] like Figure 5 and Figure 8 As shown, in some embodiments, a mounting groove 12113 is provided on the hand-held portion 1211, and the mounting groove 12113 is located on a side of the hand-held portion 1211 close to the accommodating cavity 10a. In the embodiment, the mounting grooves 12113 in adjacent spiral telescopic units 121 are connected, that is, a spiral groove structure is formed on a side of the spiral telescopic mechanism 12 close to the accommodating cavity 10a. Among them, the mounting groove 12113 close to one end of the bottom shell 13 is connected to the inside of the bottom shell 13.

[0077] Each part of the water pipe 20 can be continuously embedded in each embedding groove 12113, and each part of the water pipe 20 can be fixed in the embedding groove 12113. Exemplarily, the water pipe 20 and the embedding groove 12113 can be fixed by gluing, limiting clamping, etc. to prevent the water pipe 20 from being separated from the embedding groove 12113 at the corresponding position.

[0078] like Fig.12 and Fig.13 As shown, it can be understood that the water pipe 20 is spirally arranged in the water tank 10 and can present a spring-like structure. Therefore, the water pipe 20 can also be correspondingly contracted and expanded following the contraction and extension of the spiral telescopic mechanism 12, and there will be no problem of pulling the water pipe 20. Accordingly, while the water pipe 20 can smoothly extract the cleaning liquid from the water tank 10, it can also ensure that the water pipe 20 is protected, reducing the risk of the water pipe 20 breaking or separating from the main unit 200.

[0079] like Figure 3 and Figure 4As shown, in some embodiments, the water delivery pipe 20 may include a water inlet end 20a and a water outlet end 20b. The water inlet end 20a is disposed near one end of the bottom shell 13, and the water inlet end 20a is connected to the inside of the bottom shell 13. Correspondingly, the water outlet end 20b may be disposed near one end of the connecting pipe 11.

[0080] Combined with Figure 2 In the embodiment, the water outlet 20b may be connected to a first connection nozzle 21, which can be used to connect to the host 200. Correspondingly, the end of the host 200 for connecting to the water tank 10 is protrudingly provided with a second connection nozzle 201, and the second connection nozzle 201 is connected to the input end of the water pump. When the water tank 10 is connected to the host 200, the first connection nozzle 21 can be connected to the second connection nozzle 201 to achieve communication between the water supply device 100 and the water pump in the host 200.

[0081] In the prior art, a straight-insertion water pipe or a sufficiently long soft water pipe is usually provided. When a straight-insertion water pipe is provided, when the volume of the variable-volume water tank changes, it cannot be ensured that the water pipe contacts the bottom of the variable-volume water tank. When a sufficiently long soft water pipe is provided, the soft water pipe will be entangled and knotted in the water tank, thereby affecting the water supply effect and causing inconvenience to the user.

[0082] In the present application, the water pipe 20 is spirally embedded in the water tank 10 and fixed in the embedding groove 12113. On the one hand, when the volume of the water tank 10 is adjusted, the water inlet end 20a of the water pipe 20 is always at the bottom of the water tank 10, so that the cleaning liquid in the water tank 10 can be smoothly supplied to the nozzle 300. On the other hand, it can also prevent the water pipe 20 from being entangled and knotted in the water tank 10 to affect the water supply effect, and can also provide corresponding protection for the water pipe 20.

[0083] In summary, the oral cleaning device provided in the present application has a water supply device 100 with continuously variable volume, which can also ensure smooth supply of cleaning liquid to the nozzle 300 and avoid problems such as the water pipe 20 breaking or separating from the main unit 200.

[0084] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0085] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A water supply device, characterized in that: The invention comprises a water tank and a water delivery pipe, wherein the water tank comprises a connecting pipe, a bottom shell and a spiral telescopic mechanism, wherein the connecting pipe and the bottom shell are respectively arranged at two ends of the spiral telescopic mechanism, wherein the connecting pipe, the spiral telescopic mechanism and the bottom shell cooperate to form a containing cavity, wherein the spiral telescopic mechanism comprises a contracted state and an extended state, and when the spiral telescopic mechanism is in the extended state, the folding mark width n and the thread pitch m of the spiral telescopic mechanism satisfy: ; When switching between the contracted state and the extended state, the spiral telescopic mechanism is used to adjust the volume of the accommodating chamber to change continuously; The spiral telescopic mechanism is provided with a spiral groove structure on one side facing the accommodating cavity, and the water delivery pipe is spirally arranged in the water tank and embedded in the groove structure; The water delivery pipe includes a water inlet end and a water outlet end. The water inlet end is arranged close to the bottom shell and communicated with the interior of the bottom shell. The water outlet end is arranged close to one end of the connecting pipe.

2. The water supply device according to claim 1, characterized in that: The spiral telescopic mechanism includes a plurality of spiral telescopic units connected in sequence, and the spiral telescopic units include a folded state and an unfolded state.

3. The water supply device according to claim 2, characterized in that: The spiral telescopic unit comprises a folding assembly, a transfer part and a hand-held part which are connected in sequence; When the spiral telescopic unit is in the folded state, the folding assembly protrudes toward the accommodating cavity, and the adapter is clamped between the hand-held portion and the hand-held portion of the adjacent spiral telescopic unit, and the adjacent spiral telescopic unit is the spiral telescopic unit connected to the folding assembly.

4. The water supply device according to claim 3, characterized in that: When the spiral telescopic unit is in the folded state, the hand-held portion is protruded relative to the adapter portion in a direction away from the axis L of the water tank.

5. The water supply device according to claim 4, characterized in that: A side of the hand-held portion close to the adapter portion forms a first force-bearing surface, and a side of the hand-held portion away from the adapter portion forms a second force-bearing surface.

6. The water supply device according to claim 3, characterized in that: A embedding groove is also provided on one side of the hand-held portion close to the accommodating cavity, and the embedding grooves of adjacent spiral telescopic units are connected to form the groove structure.

7. The water supply device according to any one of claims 3 to 6, characterized in that: The folding assembly includes a first folding portion and a second folding portion, wherein the second folding portion is connected between the first folding portion and the transition portion; When the spiral telescopic unit is in the unfolded state, the second folding portion is arranged obliquely relative to the axis L of the water tank; The second folding portion gradually inclines toward the direction approaching the axis L from the transition portion toward the first folding portion.

8. An oral cleaning device, characterized in that: A water supply device comprising any one of claims 1 to 7.

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