Liquid storage mechanism and cleaning equipment

Abstract

The embodiment of the utility model discloses a liquid storage mechanism and cleaning equipment, the liquid storage mechanism comprises a box body assembly, a cover plate and a suspension part, based on this, in the use process, cleaning liquid or clear water for cleaning can be stored in the box body assembly, and the box body assembly can also be used for storing sewage; when a user injects clear water into the box body assembly or cleans the box body assembly or pours out sewage, the cover plate can be opened and hovers through the hovering piece, that is, the cover plate can be fixed to the opened position through the hovering piece, the cover plate cannot shake or unexpectedly close, and therefore the user can conveniently use the box body assembly. Under the condition, a user can directly inject water into the box body assembly, pour water out of the box body assembly or clean the box body assembly, the user does not need to hold the cover plate, the two hands of the user can be liberated, and the user experience can be improved.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of cleaning equipment, and in particular to a liquid storage mechanism and a cleaning equipment. Background Art

[0002] Cleaning equipment needs to store liquid through a liquid storage mechanism, such as storing clean water or sewage through the liquid storage mechanism. The user needs to inject clean water into the liquid storage mechanism, pour out liquid or clean the liquid storage mechanism. The cover of the water tank in traditional technology is easy to shake, or even accidentally rotate and buckle on the water tank during the user's water filling process, which brings inconvenience to the user and low user experience. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art or related technology.

[0004] To this end, a first aspect of the utility model provides a liquid storage mechanism.

[0005] A second aspect of the utility model provides a cleaning device.

[0006] In view of this, according to a first aspect of an embodiment of the present application, a liquid storage mechanism is proposed, comprising:

[0007] Box components;

[0008] A cover assembly, the cover assembly comprising a cover plate, the cover plate being rotatable relative to the box assembly to shield or expose the inner cavity of the box assembly;

[0009] A suspension member, wherein the suspension member is connected to the cover plate or the box assembly, and the suspension member is used to keep the cover plate in a suspended state when the cover plate is rotated to a certain angle relative to the box assembly.

[0010] In a feasible implementation manner, the suspension element includes:

[0011] A suspension arm is connected to the cover plate, the suspension arm is made of elastic material, and when the cover plate rotates to a certain angle relative to the box assembly, the suspension arm is used to abut against the box assembly to keep the cover plate in a suspended state.

[0012] In a feasible implementation manner, one end of the suspension arm is connected to the cover plate, and the other end is a free end.

[0013] In a feasible implementation manner, the suspension arm is arc-shaped, and the arc of the suspension arm is 3° to 90°.

[0014] In a feasible implementation manner, the free end of the suspension arm is inclined toward the direction of the wall surface of the box assembly to form an abutment portion, and the abutment portion is used to abut against the box assembly.

[0015] In a feasible implementation manner, the box assembly includes:

[0016] case;

[0017] The bracket is connected to the shell, the cover is hinged to the bracket, and the suspension arm is used to abut against the bracket.

[0018] In a feasible implementation manner, the suspension arm and the cover plate are an integrated structure; and or

[0019] The suspension arm is made of resin material.

[0020] In a feasible implementation manner, the liquid storage mechanism further includes:

[0021] A guide groove is formed on the box assembly to guide the suspension arm when the cover plate is subjected to external force, so that the cover plate is separated from the suspension state.

[0022] In a feasible implementation manner, the cover plate assembly further includes:

[0023] A fixing plate, the fixing plate is connected to the box assembly and covers a partial area of ​​the box assembly;

[0024] Wherein, the cover plate is hinged to the fixing plate.

[0025] In a feasible implementation manner, the suspension element includes:

[0026] The damping member is hinged to the fixing plate through a rotating shaft, and the damping member is arranged on the rotating shaft.

[0027] In a feasible implementation manner, there are two or more suspension members.

[0028] In a feasible embodiment, the arc of the suspension arm is 70° to 75°.

[0029] According to a second aspect of an embodiment of the present application, a cleaning device is provided, comprising:

[0030] A liquid storage mechanism as described in any of the above technical solutions.

[0031] Compared with the prior art, the present invention has at least the following beneficial effects:

[0032] The liquid storage mechanism provided in the embodiment of the present application includes a box assembly, a cover plate and a suspension member. Based on this, during use, the box assembly can store cleaning liquid or clean water for cleaning, and can also be used to store sewage. When the user injects clean water into the box assembly or cleans the box assembly, the cover plate can be opened, and the cover plate can be suspended by the suspension member, that is, the cover plate can be fixed in the open position by the suspension member, and the cover plate will not shake or close unexpectedly. In this case, the user can directly inject water into the box assembly or clean the box assembly. The user does not need to hold the cover plate, which can free the user's hands and improve the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0034] Figure 1 A schematic structural diagram of a liquid storage mechanism according to an embodiment of the present application from one angle;

[0035] Figure 2 for Figure 1 A local enlarged schematic diagram of the middle A;

[0036] Figure 3 A schematic structural diagram of a liquid storage mechanism of an embodiment provided in the present application from another angle;

[0037] Figure 4 for Figure 3 A partial enlarged schematic diagram of point B in the middle;

[0038] Figure 5 A schematic structural diagram of a liquid storage mechanism according to another embodiment of the present application;

[0039] Figure 6 for Figure 3 A partial enlarged schematic diagram of point C in the middle.

[0040] in, Figures 1 to 6 The corresponding relationship between the reference numerals and the component names is as follows:

[0041] 110 box assembly, 120 cover assembly, 130 suspension member, 140 guide groove;

[0042] 111 housing, 112 bracket;

[0043] 121 cover plate, 122 fixing plate;

[0044] 131 is a suspension arm, 132 is a contact portion. DETAILED DESCRIPTION

[0045] In order to better understand the above-mentioned technical scheme, the technical scheme of the embodiments of the present application is described in detail below through the accompanying drawings and specific embodiments. It should be understood that the embodiments of the present application and the specific features in the embodiments are detailed descriptions of the technical scheme of the embodiments of the present application, rather than limitations on the technical scheme of the present application. In the absence of conflict, the embodiments of the present application and the technical features in the embodiments may be combined with each other.

[0046] like Figures 1 to 6 As shown, according to the first aspect of an embodiment of the present application, a liquid storage mechanism is proposed, comprising: a box assembly 110; a cover assembly 120, the cover assembly 120 comprising a cover plate 121, the cover plate 121 being rotatable relative to the box assembly 110 to shield or expose the inner cavity of the box assembly 110; a suspension member 130, the suspension member 130 being connected to the cover plate 121 or the box assembly 110, the suspension member 130 being used to keep the cover plate 121 in a suspended state when it is rotated to a certain angle relative to the box assembly 110.

[0047] The liquid storage mechanism provided in the embodiment of the present application includes a box assembly 110, a cover assembly 120 and a suspension member 130. The cover assembly 120 includes a cover plate 121. Based on this, during use, the box assembly 110 can store cleaning liquid or clean water for cleaning, and can also be used to store sewage. During normal use, the cover plate 121 can seal the box assembly 110 to prevent the evaporation of the cleaning liquid or clean water, so as to reduce the spread of sewage odor. When the user needs to inject clean water, pour liquid or clean the box assembly 110, the cover 121 can be opened to rotate the cover 121 relative to the box assembly 110 by a certain angle, and then the cover 121 is suspended by the suspension member 130, that is, the cover 121 can be fixed in the open position by the suspension member 130, and the cover 121 will not shake or close unexpectedly. In this case, the user can directly inject water, pour liquid or clean the box assembly 110, and the user does not need to hold the cover 121, which can free the user's hands and improve the user experience.

[0048] It can be understood that the rotation of the cover 121 to a certain angle relative to the box assembly 110 means that the cover 121 is rotated relative to the box assembly 110 to open the inner cavity of the box assembly 110, so as to facilitate the user to inject liquid into the box assembly, to facilitate the user to pour liquid, and to facilitate the user to clean the inner cavity of the box assembly 110. For example, the rotation angle can be 50°, 60°, 73°, 90°, 135°, etc., and the specific rotation angle is not limited in this application.

[0049] like Figure 2 and Figure 6 As shown, in a feasible embodiment, the suspension member 130 includes: a suspension arm 131, the suspension arm 131 is connected to the cover plate 121, the suspension arm 131 is made of elastic material, and when the cover plate 121 rotates to a certain angle relative to the box assembly 110, the suspension arm 131 is used to abut against the box assembly 110 to keep the cover plate 121 in a suspended state.

[0050] In this technical solution, the structure of the suspension member 130 is further provided. The suspension member 130 may include a suspension arm 131. When the cover 121 rotates to a certain angle relative to the box assembly 110, the cover 121 is in an open state. One end of the suspension arm 131 can abut against the box assembly 110. The gravity of the cover 121 is applied to the box assembly 110 through the suspension arm 131. The suspension arm 131 can maintain the cover 121 in an open state. In this case, the user can inject liquid into the box assembly 110, clean the box assembly 110, or pour water. The cover 121 will not be accidentally closed, thereby improving the user experience.

[0051] In this technical solution, after the user completes the injection of liquid or the cleaning of the box assembly 110, the user can provide external force to the cover 121 by pressing the cover 121. Since the suspension arm 131 is made of elastic material, the external force can cause the suspension arm 131 to deform, thereby losing the contact with the box assembly 110, and the cover 121 can be smoothly covered on the box assembly 110. Based on this, the cover 121 can be suspended by the suspension arm 131, and the covering of the cover 121 is convenient. The suspension arm 131 is a mechanical structure. On the one hand, it has a low failure rate and can ensure the stability of the suspension and covering of the cover 121; on the other hand, it makes the structure of the liquid storage mechanism simpler, which is more convenient for the production and processing of the liquid storage mechanism and can reduce the cost of the liquid storage mechanism.

[0052] like Figure 1 , Figure 2 , Figure 5 and Figure 6 As shown, in a feasible implementation manner, one end of the suspension arm 131 is connected to the cover plate 121 , and the other end is a free end.

[0053] In this technical solution, the style of the hovering arm 131 is further improved. The hovering arm 131 may be arc-shaped. Such a configuration enables the shape of the hovering arm 131 to adapt to the movement trajectory of the cover 121 when it is opened or closed. The arc-shaped design can reduce the probability of interference between the hovering arm 131 and other components, while reducing the size of the hovering part 130 as much as possible, which is convenient for production and processing and more beautiful.

[0054] In this technical solution, one end of the suspension arm 131 is connected to the cover 121, and the other end is a free end. Based on this, the connection between the suspension arm 131 and the cover 121 can be more reliable. When the cover 121 is opened, the suspension arm 131 can be abutted against the box assembly 110 through the free end. The gravity of the cover 121 is borne by the suspension arm 131 and the box assembly 110, and the cover 121 can be maintained in an open state. In this case, the user can inject liquid into the box assembly 110 or clean the box assembly 110. The cover will not be accidentally closed, which can improve the user experience.

[0055] In a feasible implementation manner, the suspension arm 131 is arc-shaped, and the arc of the suspension arm 131 is 3° to 90°.

[0056] In this technical solution, the curvature of the hovering arm 131 is further provided. By selecting the curvature of the hovering arm 131 to be 3° to 90°, when the cover 121 is in the open state and the hovering arm 131 is hovering, the cover 121 can have a sufficient opening angle to facilitate the user to inject liquid into the box assembly 110 or clean the inside of the box assembly 110; at the same time, the opening stroke of the cover 121 is controlled within a reasonable range to prevent the user from swinging the cover 121 significantly and increasing the amount of operation, which can further improve the user experience.

[0057] It is understandable that if the curvature of the hovering arm 131 is less than 3°, then when the cover 121 is in the open state and is hovering by the hovering arm 131, the opening angle of the cover 121 may be small, and it is inconvenient for the user to fill water; if the curvature of the hovering arm 131 is greater than 90°, then during the opening process of the cover 121, it may be necessary to swing the cover 121 at a large angle, the user will over-operate, the movement amplitude is large, and the user experience is low.

[0058] like Figure 2 and Figure 6 As shown, in a feasible implementation manner, the free end of the suspension arm 131 away from the cover plate 121 is inclined toward the wall of the box assembly 110 to form an abutment portion 132 , and the abutment portion 132 is used to abut against the box assembly 110 .

[0059] In this technical solution, a style of a suspension arm 131 is further provided, and the free end of the suspension arm 131 can be tilted in the direction of the wall of the box assembly 110, that is, the free end of the suspension arm 131 is tilted outward to form a contact portion 132, based on which the abutment portion 132 can abut on the box assembly 110 when the cover 121 is in the open state, and the cover 121 can be fixed in the open position by the suspension arm 131, and the cover 121 will not shake or close unexpectedly. In this case, the user can directly inject water into the box assembly 110 or clean the box assembly 110, and the user does not need to hold the cover 121, which can free the user's hands and improve the user experience.

[0060] like Figure 1 and Figure 5 As shown, in a feasible implementation, the box assembly 110 includes: a shell 111; a bracket 112, the bracket 112 is connected to the shell 111, the cover 121 is hinged to the bracket 112, and the suspension arm 131 is used to abut against the bracket 112.

[0061] In this technical solution, the structural composition of the box assembly 110 is further provided. The box assembly 110 may include a shell 111 and a bracket 112. A storage space may be formed inside the shell 111 to store cleaning liquid, clean water or sewage, and a bracket 112 may be arranged on the shell 111. The bracket 112 is then connected to the cover plate 121, and the suspension arm 131 is also used to abut against the bracket 112. In this arrangement, when assembling the liquid storage mechanism, the cover plate 121, the suspension arm 131 and the bracket 112 may be assembled first, and then the bracket 112 may be arranged on the shell 111. In this arrangement, the cover plate 121, the suspension arm 131 and the bracket 112 may be assembled modularly first, and then assembled on the shell 111, which is convenient for assembling the liquid storage mechanism.

[0062] In a feasible implementation manner, the suspension arm 131 and the cover plate 121 are an integrated structure.

[0063] In this technical solution, the suspension arm 131 and the cover plate 121 are an integrated structure. On the one hand, the overall mechanical strength of the cover plate 121 and the suspension member 130 is increased, which can improve the service life of the liquid storage mechanism; on the other hand, the cover plate 121 and the suspension arm 131 can be simultaneously produced and processed through one process, which has lower production costs. For example, the cover plate 121 and the suspension arm 131 can be formed through an injection molding process.

[0064] In a feasible implementation, the suspension arm 131 is made of a resin material. This configuration enables the suspension arm 131 to have a certain elasticity and strong mechanical strength, thereby increasing the service life of the liquid storage mechanism.

[0065] like Figure 6 As shown, in a feasible embodiment, the liquid storage mechanism further includes: a guide groove 140, the guide groove 140 is formed on the box assembly 110, so as to guide the hovering arm 131 when the cover plate 121 is subjected to external force, so that the cover plate 121 is out of the hovering state.

[0066] In this technical solution, the liquid storage mechanism may further include a guide groove 140, which is formed on the box assembly 110. When the cover 121 is in an open state, the suspension arm 131 abuts against the guide groove 140. When the cover 121 is not subjected to external force, the cover 121 can be in a suspended state. When the cover 121 is subjected to external force, such as when the user presses the cover 121, the guide groove 140 can guide the suspension arm 131, and the suspension arm 131 will shrink and deform in a direction away from the box assembly 110. The cover 121 can be covered on the box assembly 110. Based on this, the design of the guide groove 140 makes the closing of the cover 121 smoother.

[0067] It is understandable that when the box assembly 110 of the liquid storage mechanism includes a bracket 112 , the guide groove 140 can be formed on the bracket 112 .

[0068] like Figure 6 As shown, in a feasible implementation, the cover assembly 120 further includes: a fixing plate 122 , the fixing plate 122 is connected to the box assembly 110 , and covers a partial area of ​​the box assembly 110 ; wherein the cover plate 121 is hinged to the fixing plate 122 .

[0069] In this technical solution, a style of the cover assembly 120 is further provided. The cover assembly 120 may include a cover plate 121 and a fixing plate 122. The fixing plate 122 may shield a partial area of ​​the box assembly 110. Based on this, when the cover plate 121 is opened, the moving stroke of the cover plate 121 is shorter, and the user operation is more convenient.

[0070] In a feasible implementation manner, the suspension member 130 includes: a damping member, the cover plate 121 is hinged to the fixing plate 122 via a rotating shaft, and the damping member is disposed on the rotating shaft.

[0071] In this technical solution, another style of the suspension member 130 is provided. The suspension member 130 may include a damping member, which is arranged on a rotating shaft connected to the cover plate 121. Based on this, when the cover plate 121 is opened at a certain position, the damping member will provide friction for the rotating shaft, and then the rotating shaft can be locked, so that the cover plate 121 is suspended. When the cover plate 121 needs to be closed, the cover plate 121 will overcome the friction force under the external force, and the cover plate 121 can drive the rotating shaft to rotate. The cover is arranged on the box assembly 110, such as the cover plate 121 drives the rotating shaft to rotate 65°, and When the external force on the cover 121 is removed, the damping member will lock the cover 121. When the cover 121 is pressed, the cover 121 overcomes the friction of the damping member, and the cover 121 is closed on the box assembly 110. In this way, the cover 121 can be fixed in the open position by the suspension member 130, and the cover 121 will not shake or close unexpectedly. In this case, the user can directly fill water into the box assembly 110 or clean the box assembly 110. The user does not need to hold the cover 121, which can free the user's hands and improve the user experience.

[0072] like Figure 1 , Figure 3 and Figure 5 As shown, in a feasible implementation manner, there are two or more suspension members 130 .

[0073] In this technical solution, the number of suspension members 130 is further provided, and there are two or more suspension members 130 . Such a configuration makes the suspension of the cover plate 121 more reliable.

[0074] In some examples, there may be two suspension members 130 , and the two suspension members 130 are symmetrically arranged along the central axis of the cover plate 121 . Such an arrangement can make the suspension force of the cover plate 121 more balanced and the suspension effect better.

[0075] In a possible implementation, the arc of the suspension arm is 70° to 75°.

[0076] In this technical solution, the curvature of the hovering arm is further provided. By selecting the curvature of the hovering arm 131 to be 70° to 75°, when the cover 121 is in the open state and the hovering arm 131 is hovering, the cover 121 can have a sufficient opening angle to facilitate the user to inject liquid into the box assembly 110 or clean the inside of the box assembly 110; at the same time, the opening stroke of the cover 121 is controlled within a reasonable range to prevent the user from swinging the cover 121 significantly and increasing the amount of operation, which can further improve the user experience.

[0077] It is understandable that if the curvature of the hovering arm 131 is less than 70°, then when the cover 121 is in the open state and is hovering by the hovering arm 131, the opening angle of the cover 121 may be small, and it is inconvenient for the user to fill water; if the curvature of the hovering arm 131 is greater than 75°, then during the opening process of the cover 121, it may be necessary to swing the cover 121 at a large angle, the user will over-operate, the movement amplitude is large, and the user experience is low.

[0078] like Figures 1 to 6 As shown, according to the second aspect of an embodiment of the present application, a cleaning device is proposed, comprising: a liquid storage mechanism as in any of the above technical solutions.

[0079] The cleaning device provided in the embodiment of the present application includes a liquid storage mechanism as in any of the above-mentioned technical solutions, and therefore the cleaning device has all the beneficial effects of the liquid storage mechanism of the above-mentioned technical solutions.

[0080] The liquid storage mechanism of the cleaning device provided in the embodiment of the present application includes a box assembly 110, a cover plate 121 and a suspension member 130. Based on this, during use, the box assembly 110 can store cleaning liquid or clean water for cleaning, and can also be used to store sewage. During normal use, the cover plate 121 can cover the box assembly 110 to prevent the evaporation of the cleaning liquid or clean water, so as to reduce the spread of the odor of the sewage. When the user needs to inject clean water into the box assembly 110, pour liquid or clean the box assembly 110, the cover plate 121 can be opened, and the cover plate 121 is suspended by the suspension member 130, that is, the cover plate 121 can be fixed in the open position by the suspension member 130, and the cover plate 121 will not shake or close unexpectedly. In this case, the user can directly inject water into the box assembly 110 or clean the box assembly 110, and the user does not need to hold the cover plate 121, which can free the user's hands and improve the user experience.

[0081] In some examples, the cleaning device may include a base station and a cleaning robot. The liquid storage mechanism is used to be arranged on the base station to store cleaning water or sewage, and the cleaning robot can clean the cleaning parts with clean water.

[0082] In the present invention, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise clearly defined. The terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0083] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by terms such as "up", "down", "left", "right", "front" and "back" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore, cannot be understood as a limitation on the present invention.

[0084] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", 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 utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0085] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A liquid storage mechanism, characterized in that: include: Box components; A cover assembly, the cover assembly comprising a cover plate, the cover plate being rotatable relative to the box assembly to shield or expose the inner cavity of the box assembly; A suspension member, wherein the suspension member is connected to the cover plate or the box assembly, and the suspension member is used to keep the cover plate in a suspended state when the cover plate is rotated to a certain angle relative to the box assembly.

2. The liquid storage mechanism according to claim 1, characterized in that: The suspension member comprises: A suspension arm is connected to the cover plate, the suspension arm is made of elastic material, and when the cover plate rotates to a certain angle relative to the box assembly, the suspension arm is used to abut against the box assembly to keep the cover plate in a suspended state.

3. The liquid storage mechanism according to claim 2, characterized in that: One end of the suspension arm is connected to the cover plate, and the other end is a free end.

4. The liquid storage mechanism according to claim 3, characterized in that: The suspension arm is arc-shaped, and the arc of the suspension arm is 3° to 90°.

5. The liquid storage mechanism according to claim 3, characterized in that: The free end of the suspension arm is inclined toward the direction of the wall surface of the box assembly to form an abutment portion, and the abutment portion is used to abut against the box assembly.

6. The liquid storage mechanism according to claim 2, characterized in that: The box assembly comprises: case; The bracket is connected to the shell, the cover assembly is connected to the bracket, and the suspension arm is used to abut against the bracket.

7. The liquid storage mechanism according to claim 2, characterized in that: The suspension arm and the cover plate are an integrated structure; and or The suspension arm is made of resin material.

8. The liquid storage mechanism according to claim 2, characterized in that: Also includes: A guide groove is formed on the box assembly to guide the suspension arm when the cover plate is subjected to external force, so that the cover plate is separated from the suspension state.

9. The liquid storage mechanism according to claim 1, characterized in that: The cover plate assembly also includes: A fixing plate, the fixing plate is connected to the box assembly and covers a partial area of ​​the box assembly; Wherein, the cover plate is hinged to the fixing plate.

10. The liquid storage mechanism according to claim 9, characterized in that: The suspension member comprises: The damping member is hinged to the fixing plate through a rotating shaft, and the damping member is arranged on the rotating shaft.

11. The liquid storage mechanism according to any one of claims 1 to 10, characterized in that: There are two or more suspension members.

12. The liquid storage mechanism according to claim 4, characterized in that: The arc of the suspension arm is 70° to 75°.

13. A cleaning device, characterized in that: include: A liquid storage mechanism as claimed in any one of claims 1 to 12.

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