Air duct switching structure and cleaning equipment

Abstract

The utility model discloses an air duct switching structure and cleaning equipment. The air duct switching structure comprises a switching cavity, a first air duct and a second air duct, wherein the switching cavity is provided with a first opening and a second opening which are communicated with an inner cavity of the switching cavity; and the switching piece is movably arranged in the switching cavity, and the switching piece moves relative to the switching cavity so as to open or close the second opening, so that the first opening can be selectively communicated with the second opening. According to the technical scheme provided by the utility model, an independent fan does not need to be arranged on the base station to clean the dirt collecting cavity, so that more cost is saved, the structure of the base station is simpler, and the base station is more convenient to assemble and maintain.

Description

Technical Field

[0001] The utility model relates to the technical field of cleaning tools, and in particular to an air duct switching structure and a cleaning device. Background Art

[0002] Cleaning equipment (such as floor scrubbers, sweeping and mopping machines, or glass cleaning machines, etc.) is usually provided with a dirt collecting chamber, through which the dirt generated by the cleaning equipment during the cleaning process can be stored and collected. After the dirt collecting chamber is full, it can be cleaned up together to ensure that the cleaning equipment has enough cleaning working time. When the cleaning equipment is removing dirt, the suction force for cleaning is provided by the suction device on the cleaning equipment. When cleaning the dirt collecting chamber, the suction force is provided by the suction device on the base station. Suction devices must be provided on both the cleaning equipment and the base station, which makes the cleaning cost high, and the user's purchase and use costs will also increase. In addition, the cleaning equipment needs to be provided with a dirt collecting channel for sucking in dirt and a drain channel for discharging stains in the dirt collecting chamber. There are too many pipes or passages inside the cleaning equipment, and the structure is complicated, which is not conducive to the assembly and maintenance of the cleaning equipment. Utility Model Content

[0003] Therefore, the technical problem to be solved by the present invention is that the cleaning method of the dirt collecting chamber on the traditional cleaning equipment makes the structures of the cleaning equipment and the base station more complicated, which is not conducive to assembly and maintenance, and will increase the user's use cost.

[0004] In order to solve the above technical problems, the utility model provides an air duct switching structure, comprising:

[0005] A switching cavity, wherein the switching cavity is provided with a first opening and a second opening communicating with the inner cavity thereof;

[0006] A switching member is movably disposed in the switching cavity. The switching member moves relative to the switching cavity to open or close the second opening, so that the first opening can be selectively connected to the second opening.

[0007] Optionally, the switching cavity is further provided with a third opening communicating with the inner cavity thereof;

[0008] The switching member moves relative to the switching chamber to open or close the third opening, so that the first opening can be selectively connected to the third opening.

[0009] Optionally, the switching cavity is configured to close the third opening when the second opening is opened, and to open the third opening when the second opening is closed.

[0010] Optionally, the switching element includes:

[0011] A reversing shaft, rotatably disposed on the switching chamber;

[0012] A blocking block protrudes from one side of the reversing shaft;

[0013] The reversing shaft rotates under the action of an external force, driving the blocking block to rotate, so that the blocking block can block the second opening and the third opening respectively.

[0014] Optionally, the air duct switching structure further includes:

[0015] A driving handle, wherein one of the driving handle and the reversing shaft is provided with an adjusting groove, and the other is provided with an adjusting protrusion plugged into and matched with the adjusting groove;

[0016] The driving handle is rotated by an external force, and the reversing shaft is driven to rotate together with the adjusting groove and the adjusting protrusion under the cooperation of the adjusting groove and the adjusting protrusion.

[0017] Optionally, the switching cavity has a first inner wall, a second inner wall, and a transition wall connecting the first inner wall and the second inner wall;

[0018] The first opening is arranged on the first inner wall, the second opening and the third opening are arranged on the transition wall, the transition wall is arranged in an arc shape, and the shielding block is arranged in an arc shape adapted to the transition wall.

[0019] Optionally, the blocking block has a first stop wall and a second stop wall which are arranged in opposite directions along the circumference of the reversing shaft;

[0020] Wherein, when the switching member connects the first opening and the second opening, the second stop wall forms a stop fit with the second inner wall, and when the switching member connects the first opening and the third opening, the first stop wall forms a stop fit with the first inner wall.

[0021] Optionally, the material of the end of the blocking block facing away from the reversing shaft is an elastic material; or, a sealing member is bonded to the end of the blocking block facing away from the reversing shaft.

[0022] Optionally, the blocking block is provided with a through hole extending along the circumference of the switching cavity, and the through hole can connect the first opening and the third opening.

[0023] Optionally, the switching cavity comprises:

[0024] A cavity body, wherein the first opening, the second opening and the third opening are sequentially arranged along the circumference of the cavity body;

[0025] The extension part is protrudingly arranged on one side of the cavity body, and the extension part is extended outward from the mouth side of the first opening.

[0026] Optionally, the first opening, the second opening and the third opening are arranged at intervals along the circumference of the switching chamber.

[0027] Optionally, the switching member is rotatably disposed in the switching chamber, and has a first working position communicating with the first opening and the second opening, and a second working position communicating with the first opening and the third opening.

[0028] Optionally, the second opening and the third opening are located on the same side of the first opening; or,

[0029] The second opening and the third opening are respectively located on two sides of the first opening.

[0030] Optionally, the air duct switching structure further includes:

[0031] The switching driver is arranged outside the switching cavity and is used to drive the switching member to move.

[0032] The utility model also provides an air duct switching structure, comprising:

[0033] A switching cavity, wherein the switching cavity is provided with a first opening, a second opening and a third opening communicating with the inner cavity thereof;

[0034] A switching member, movably disposed in the switching cavity, and the switching member can move relative to the switching cavity;

[0035] The switching element has a first working position in which the first opening and the second opening are conductive, and the first opening and the third opening are non-conductive.

[0036] Optionally, the switching element further has a second working position in which the first opening and the second opening are non-conductive and the first opening and the third opening are conductive.

[0037] Optionally, the air duct switching structure further includes:

[0038] The switching driver is used to drive the switching member to move so that the switching member switches between the first working position and the second working position.

[0039] The utility model also provides a cleaning device, comprising the above-mentioned air duct switching structure.

[0040] The technical solution provided by the utility model has the following advantages:

[0041] The air duct switching structure provided by the utility model includes a switching chamber and a switching member, and the first opening and the second opening are provided on the switching chamber, and the switching member moves relative to the switching chamber, so that the first opening can be selectively connected to the second opening, so as to better control the conveying state of the gas or liquid between the first opening and the second opening. Specifically, when the air duct switching structure is applicable to a cleaning device, the suction device in the cleaning device is suitable for being connected to the first opening, and when the cleaning device is docked with the base station, the second opening can be connected to the sewage discharge channel on the base station. Thus, when the cleaning device is connected to the base station for decontamination, the state is switched by the switching member, so that the first opening is connected to the second opening, so that under the action of the suction device, a negative pressure can be formed in the base station, so that the dirt in the sewage collection chamber is sucked into the base station, and the self-cleaning of the sewage collection chamber of the cleaning device is realized. The cleaning operation of the cleaning device is more convenient, and there is no need to set a separate fan on the base station to clean the sewage collection chamber, so it is more cost-saving, and the structure of the base station is also simpler, and it is more convenient to assemble and maintain the base station. Moreover, the pipelines can be integrated through the air duct switching structure, and the internal structure of the cleaning equipment is more compact, making the cleaning equipment easier to maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0043] Figure 1 A schematic structural diagram of an embodiment of an air duct switching structure (when connected to an air duct docking structure) provided by the utility model;

[0044] Figure 2 for Figure 1 A structural schematic diagram of the air duct switching structure (when connected to the air duct docking structure) from another perspective;

[0045] Figure 3 for Figure 1 A schematic diagram of an exploded structure of the air duct switching structure;

[0046] Figure 4 for Figure 1 A cross-sectional structural schematic diagram of the air duct switching structure described in;

[0047] Figure 5 for Figure 1 A schematic diagram of the structure of the switching cavity described in;

[0048] Figure 6 for Figure 1A schematic diagram of the structure of the switching element;

[0049] Figure 7 for Figure 6 A schematic structural diagram of the switching element from another perspective.

[0050] Description of reference numerals:

[0051] 100-air duct switching structure; 1-switching cavity; 11-cavity body; 111-first inner wall; 1111-first opening; 112-transition wall; 1121-second opening; 1122-third opening; 113-second inner wall; 12-extension portion; 114-bottom wall; 115-top wall; 2-switching member; 21-reversing shaft; 22-blocking block; 221-through hole; 222-first stop wall; 223-second stop wall; 3-switching driver; 4-air duct docking structure; 41-first air guide port; 42-second air guide port; 43-air guide interface. DETAILED DESCRIPTION

[0052] The technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all of the embodiments. The utility model will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments. It should be noted that the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

[0053] It should be noted that the terms "first", "second", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0054] In the present invention, unless otherwise specified, the directional words used, such as "up, down, top, bottom", usually refer to the directions shown in the drawings, or to the components themselves in the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directional words are not used to limit the present invention.

[0055] The utility model provides an air duct switching structure 100, which can be applied to devices that need to transmit gas or liquid. The air duct switching structure 100 can realize the switching of gas or liquid transmission channels, so as to transport gas or liquid to a designated location, making the transportation of gas or liquid more convenient. Specifically, the air duct switching structure 100 can be applied to cleaning equipment such as a floor scrubber, a sweeper, or a washing and mopping machine. The specific structure of the air duct switching structure 100 will be described below by taking the air duct switching structure 100 applied to cleaning equipment as an example, and other equipment can refer to the adaptability implementation.

[0056] Specifically, see Figures 1 to 3 The air duct switching structure 100 includes a switching chamber 1, and a switching member 2 movably arranged in the switching chamber 1, and a first opening 1111 and a second opening 1121 communicating with the inner chamber thereof are provided on the switching chamber 1, wherein the switching member 2 moves relative to the switching chamber 1 to open or close the second opening 1121, so that the first opening 1111 can be selectively connected to the second opening 1121, wherein the second opening 1121 can be suitable for connecting to an external component, and through the movement of the switching member 2, when the second opening 1121 is opened, the suction device can be connected to the external component (such as a base station), and when the second opening 1121 is closed, negative pressure is no longer formed at the external component.

[0057] In this embodiment, by providing a first opening 1111 and a second opening 1121 on the switching chamber 1, and by the movement of the switching member 2 relative to the switching chamber 1, the first opening 1111 can be selectively connected to the second opening 1121, so as to better control the conveying state of the gas or liquid between the first opening 1111 and the second opening 1121. Specifically, when the air duct switching structure 100 is applicable to a cleaning device, the suction device (such as a fan or a vacuum pump, etc.) on the cleaning device is suitable for being connected to the first opening 1111, and when the cleaning device is docked with the base station, the second opening 1121 can be suitable for being connected to the base station. Thus, when the cleaning device is docked with the base station for decontamination, the switching member 2 moves relative to the switching chamber 1, so that the first opening 1111 is connected to the second opening 1121, so that under the action of the suction device, a negative pressure is formed in the base station, so that the dirt in the dirt collecting chamber of the cleaning device is sucked into the base station, and the self-cleaning of the dirt collecting chamber of the cleaning device is realized. The cleaning operation of the cleaning device is more convenient, and there is no need to set up a separate fan on the base station to clean the dirt collection chamber, so it is more cost-saving, making the structure of the base station simpler and more convenient to assemble and maintain the base station. In addition, the pipelines can be integrated through the air duct switching structure 100, and the internal structure of the cleaning device is more compact, making the cleaning device more convenient to maintain.

[0058] In this embodiment, a dirt storage chamber may also be provided in the base station. When the air duct switching structure 100 connects the cleaning device to the base station, a negative pressure is formed in the base station under the action of the suction device to suck the dirt in the dirt collecting chamber of the cleaning device into the dirt storage chamber of the base station.

[0059] In this embodiment, the base station can be an automatic water supply and drainage device, which is provided with a drainage mechanism connected to an external pipe (such as a sewer). When the air duct switching structure 100 connects the cleaning equipment and the base station, under the action of the suction device, a negative pressure is formed in the base station to suck the dirt in the dirt collecting chamber of the cleaning equipment into the drainage mechanism, and the drainage mechanism directly discharges the dirt into the external pipe.

[0060] Preferably, combined Figure 1 and Figure 3 As shown, the switching chamber 1 is also provided with a third opening 1122 connected to its inner cavity. The switching member 2 moves relative to the switching chamber 1 to open or close the third opening 1122, so that the first opening 1111 can be selectively connected to the third opening 1122. The third opening 1122 can be suitable for connecting with the dirt collecting chamber of the cleaning device. When the switching member 2 moves so that the first opening 1111 can be selectively connected to the third opening 1122, the suction device can be selectively connected to the dirt collecting chamber. When the cleaning device itself is cleaning the contact surface, self-cleaning and other dirt suction operations, the first opening 1111 can be connected to the third opening 1122 through the switching member 2 to connect the suction device and the dirt collecting chamber, so that negative pressure is formed in the dirt collecting chamber to suck external dirt into the dirt collecting chamber for storage. Thus, the air duct switching structure 100 can control the conduction and blockage of the first opening 1111 and the second opening 1121, and can control the conduction and blockage of the first opening 1111 and the third opening 1122, thereby realizing the control of the two channels, thereby better controlling the flow channel direction of the airflow in the cleaning equipment to realize different functions of the cleaning equipment.

[0061] It can be understood that, in one embodiment, the air duct switching structure 100 can separately control the conduction and blocking between the first opening 1111 and the second opening 1121, and the conduction and blocking between the first opening 1111 and the third opening 1122. When the air duct switching structure 100 enables the conduction or blocking of the first opening 1111 and the second opening 1121, the conduction or blocking between the first opening 1111 and the third opening 1122 can also be achieved. For example, a first air duct is formed between the first opening 1111 and the second opening 1121, and a second air duct is formed between the first opening 1111 and the third opening 1122. The first air duct and the second air duct are isolated and do not affect each other. The two air ducts can be freely controlled, and the working flexibility is better, so that the combination form achieved is also better. When the first air duct is conducted, the second air duct can be conducted or blocked; when the first air duct is blocked, the second air duct can also be conducted or blocked, so as to adapt to the use requirements of different devices.

[0062] Specifically, when the air duct switching structure 100 is applied to a cleaning device, it is understandable that when the cleaning device is performing cleaning work, the cleaning device is not connected to the base station. Therefore, when the cleaning device is performing cleaning, the channel for discharging sewage from the sewage collecting chamber should be kept in a blocked state; and when the cleaning device has finished cleaning and the cleaning device is connected to the base station, the sewage discharge channel is opened again, and the channel for removing sewage is closed, so that the cleaning device no longer performs cleaning work. Therefore, preferably, when the switching chamber 1 opens the second opening 1121, the third opening 1122 should be closed, and when the switching chamber 1 closes the second opening 1121, the third opening 1122 should be opened. Thus, when the first opening 1111 is connected to the second opening 1121, the switching member 2 is set to block the third opening 1122, so that the first opening 1111 and the third opening 1122 are blocked, and the cleaning device is in a sewage discharge state of the sewage collection chamber; and when the first opening 1111 is connected to the third opening 1122, the switching member 2 is set to block the second opening 1121, so that the first opening 1111 and the second opening 1121 are blocked, so that the cleaning device is in a sewage suction state of sucking external dirt. The second opening 1121 can be opened and the third opening 1122 can be blocked, or the second opening 1121 can be blocked and the third opening 1122 can be opened at the same time by the switching member 2, without having to adjust in multiple places separately. Obviously, the control structure is simpler, and the synchronization of the state switching of the two openings is better, which can better ensure the uniqueness of the connection of the first opening 1111, reduce damage to the suction device, and better protect the cleaning equipment.

[0063] Among them, the switching member 2 can move in many ways. For example, the switching member 2 can be moved in a straight line and arranged in the switching chamber 1, or the switching member 2 can be moved in an arc and arranged in the switching chamber 1, or the switching member 2 can be moved in a straight line and an arc and arranged in the switching chamber 1. Through the movement of the switching member 2, the second opening 1121 is opened while the third opening 1122 is blocked, and the third opening 1122 is opened when the second opening 1121 is blocked, so that the airflow channel can be flexibly switched.

[0064] Preferably, the switching member 2 is rotatably arranged in the switching chamber 1, and has a first working position connecting the first opening 1111 and the second opening 1121, and a second working position connecting the first opening 1111 and the third opening 1122. By rotating the switching member 2 to switch between the first working position and the second working position, the switching of the air duct of the air duct switching structure 100 is more convenient.

[0065] When in the first working position, the first opening 1111 and the third opening 1122 are non-conductively arranged, and when in the second working position, the first opening 1111 and the second opening 1121 are non-conductively arranged, thereby ensuring the uniqueness of the connectivity of the air duct switching structure 100 and making the cleaning equipment work better.

[0066] Moreover, combined with Figure 2 and Figure 3 As shown, the air duct switching structure 100 may also include a switching driver 3, which is driven and connected to the switching member 2. The switching driver 3 drives the switching member 2 to rotate, making the rotation of the switching member 2 more labor-saving and better realizing the automatic control of the air duct switching structure 100.

[0067] Among them, when the switching member 2 is in a rotation setting, the first opening 1111, the second opening 1121, and the third opening 1122 are arranged at intervals along the circumference of the switching chamber 1, so as to be arranged along the rotation path of the switching member 2, so that the switching member 2 rotates to be respectively located at the second opening 1121 and the third opening 1122, thereby blocking the second opening 1121 and the third opening 1122 respectively.

[0068] It is understandable that, in one embodiment, the second opening 1121 and the third opening 1122 may be located on both sides of the first opening 1111, respectively. By rotating the switching member 2, the switching member 2 may pass through the second opening 1121, the first opening 1111 and the third opening 1122 in sequence, or the switching member 2 may pass through the third opening 1122, the first opening 1111 and the second opening 1121 in sequence, so as to realize the switching between the first working position and the second working position. For example, when the cleaning device is in a cleaning state of sucking dirt, the switching member 2 is arranged to block the second opening 1121. After cleaning is completed, the switching member 2 may be driven to rotate in a clockwise direction by a first preset angle, so that the switching member 2 may rotate from the second opening 1121 through the first opening 1111 to the third opening 1122, thereby blocking the third opening 1122, so as to enter a sewage discharge state docked with the base station. The switching member 2 can pass through the second opening 1121, the first opening 1111 and the third opening 1122 in sequence, and can block any opening, which is more flexible and diverse.

[0069] Preferably, if Figure 3As shown in , the second opening 1121 and the third opening 1122 may be located on the same side of the first opening 1111. By rotating the switching member 2, the switching member 2 can be moved and switched between the second opening 1121 and the third opening 1122. For example, when the cleaning device is in a cleaning state of sucking dirt, the switching member 2 is arranged to block the second opening 1121; when the cleaning device is in a sewage discharge state docked with the base station, the switching member 2 can be driven to rotate in a clockwise direction by a first preset angle so that the switching member 2 is rotated to block the third opening 1122 to enter the sewage discharge state docked with the base station. The switching member 2 only switches between the second opening 1121 and the third opening 1122, and does not pass through the first opening 1111, so the rotation path is shorter, thereby the switching speed is faster.

[0070] Specifically, combined Figure 3 and Figure 4 As shown, the switching member 2 includes a reversing shaft 21 rotatably disposed on the switching chamber 1, and a blocking block 22 protruding from one side of the reversing shaft 21. When the reversing shaft 21 is rotated by an external force, the blocking block 22 can be driven to rotate together, so that the blocking block 22 can respectively block the second opening 1121 and the third opening 1122. Specifically, the first opening 1111, the second opening 1121 and the third opening 1122 are respectively arranged on the switching chamber 1 in a counterclockwise direction. The reversing shaft 21 rotates counterclockwise, so that the blocking block 22 can move from the second opening 1121 to the third opening 1122. The reversing shaft 21 rotates clockwise, so that the blocking block 22 can move from the third opening 1122 to the second opening 1121, so as to respectively block the second opening 1121 and the third opening 1122. The reversing shaft 21 is flexible to move, and the structure is simple, so the cost is also lower.

[0071] Furthermore, the switching driver 3 is connected to the reversing shaft 21, and the reversing shaft 21 is driven to rotate by the switching driver 3, so that the shielding block 22 can be switched between the first working position and the second working position to respectively shield the third opening 1122 and the second opening 1121, which is more automated. Moreover, the switching driver 3 is arranged outside the switching chamber 1 and connected to one end of the reversing shaft 21, and the switching driver 3 can be set as a driving motor, and the reversing shaft 21 is driven to rotate by the driving motor to realize the automatic movement of the shielding block 22.

[0072] Moreover, if Figure 4As shown in , the air duct switching structure 100 also includes a driving handle, wherein an adjustment groove is provided on one of the driving handle and the reversing shaft 21, wherein an adjustment protrusion that is plugged and matched with the adjustment groove is provided on the other. When the driving handle is rotated by an external force, the reversing rotation can be driven to rotate together under the cooperation of the adjustment groove and the adjustment protrusion, so that a stop fit is formed between the driving handle and the reversing shaft 21. When the switching driver 3 fails to work normally, the driving handle can be rotated manually to drive the reversing shaft 21 and the blocking block 22 to rotate together, so as to realize the switching of the air duct switching structure 100 between the first working position and the second working position. The air duct switching structure 100 can be driven by two driving modes: manual drive and drive motor drive. When the switching driver 3 fails to work normally, the working state can be switched by manual operation, which is more flexible and has a wider range of adaptability.

[0073] For switching chamber 1, combined Figure 3 and Figure 5 As shown, the switching chamber 1 includes a chamber body 11 and an extension portion 12. The chamber body 11 is roughly fan-shaped and cylindrical, and the interior is hollow. The extension portion 12 protrudes on one side of the chamber body 11. The first opening 1111, the second opening 1121 and the third opening 1122 are arranged in sequence along the circumference of the chamber body 11. The extension portion 12 extends outward from the circumference of the first opening 1111 to form an interface suitable for docking with a suction device. The shielding block 22 is arranged on the inner side of the chamber body 11, and a through hole 221 is provided on the shielding block 22 along the circumference of the switching chamber 1. When the shielding block 22 is in the second working position, the first opening 1111 and the third opening 1122 can be connected through the through hole 221 to ensure that the suction device is connected to the dirt collecting chamber of the cleaning equipment.

[0074] Furthermore, if Figure 5 As shown in the figure, the cavity body 11 has a first inner wall 111, a second inner wall 113, and a transition wall 112 connecting the first inner wall 111 and the second inner wall 113, the first inner wall 111 and the third inner wall respectively form two side walls of a fan shape, the transition wall 112 is an arc-shaped fan-shaped wall, the first opening 1111 is arranged on the first inner wall 111, the second opening 1121 and the third opening 1122 are arranged on the transition wall 112, and the shape of the end face of the blocking block 22 facing away from the reversing shaft 21 is adapted to the shape of the transition wall 112, that is, the end face of the blocking block 22 facing the transition wall 112 is also arranged in an arc shape, so as to better block the second opening 1121 and the third opening 1122 arranged in an arc shape.

[0075] Moreover, combined with Figure 3As shown, the cavity body 11 has a bottom wall 114 connected to the first inner wall 111, the second inner wall 113 and one end of the transition wall 112, and also has a top wall 115 that is detachably arranged with the first inner wall 111, the second inner wall 113 and the transition wall 112, the reversing shaft 21 is rotatably arranged on the top wall 115, and a guide cylinder is arranged on the cavity body 11. After the reversing shaft 21 is rotatably arranged on the top wall 115, the top wall 115 with the switching member 2 installed is then covered on the first inner wall 111, the second inner wall 113 and the transition wall 112, and the reversing shaft 21 is rotatably arranged in the guide cylinder, thereby closing the cavity body 11. The assembly of the switching member 2 is not limited to the internal space of the cavity body 11, the assembly is more convenient, and the subsequent maintenance is also convenient to disassemble, and the maintenance cost is also lower.

[0076] In addition, for the shielding block 22, combined with Figure 6 and Figure 7 As shown, the blocking block 22 has a first stop wall 222 and a second stop wall 223 which are arranged in opposite directions along the circumference of the reversing shaft 21. When the switching member 2 is in the first working position, the second stop wall 223 forms a stop fit with the second inner wall 113 to prevent the blocking block 22 from continuing to rotate along the second opening 1121 toward the third opening 1122, thereby preventing the blocking block 22 from rotating too much and failing to completely close the third opening 1122. At the same time, it can be indicated that the blocking block 22 has rotated into place and can stop rotating; when the switching member 2 is in the second working position, the first stop wall 222 forms a stop fit with the first inner wall 111 to prevent the blocking block 22 from continuing to rotate along the third opening 1122 toward the second opening 1121, thereby preventing the blocking block 22 from rotating too much and failing to completely close the second opening 1121. At the same time, it can be indicated that the blocking block 22 has rotated into place and can stop rotating.

[0077] The air duct switching structure 100 may further include a position sensor and a controller, wherein the position sensor may be disposed on the first inner wall 111 and / or the second inner wall 113. When the first stop wall 222 and the second stop wall 223 rotate to the right position and trigger the position sensor, the position sensor may send the detection structure to the controller, and the controller may control the switching driver 3 to work, so that the switching driver 3 may be stopped in time after the shielding block 22 rotates to the right position, which is more energy-saving and more intelligent.

[0078] Moreover, the material of the end of the shielding block 22 facing away from the reversing shaft 21, that is, the end of the shielding block 22 that closes the second opening 1121 and the third opening 1122, is an elastic material, and the elastic material allows the shielding block 22 to be in closer contact with the second opening 1121 and the third opening 1122, and the sealing effect is better. Alternatively, a sealing member is bonded to the end of the shielding block 22 facing away from the reversing shaft 21, and the gap between the shielding block 22 and the second opening 1121 and the third opening 1122 can be closed by the sealing member to ensure a better sealing effect. Among them, the sealing member can be set as a sealing pad or a sealing ring, etc.

[0079] The utility model also provides a cleaning device, which includes the above-mentioned air duct switching structure 100. The cleaning device may also include an equipment body, a suction device and a dirt collecting chamber provided on the equipment body. The air duct switching structure 100 may be provided on the equipment body, and the first opening 1111 of the air duct switching structure 100 is connected to the suction device, and the third opening 1122 of the air duct switching structure 100 is connected to the dirt collecting chamber. When the suction device (such as a fan) is turned on, the air duct switching structure 100 may be switched to the second working position, so that the suction device can form a negative pressure in the dirt collecting chamber, thereby allowing external dirt to be sucked into the dirt collecting chamber for storage. When the cleaning device is connected to the base station, the second opening 1121 of the air duct switching structure 100 can be connected to the base station to enter the first working position, so that the suction device is connected to the base station, so that when the suction device is turned on, a negative pressure can be formed in the base station, and the dirt in the dirt collecting chamber is sucked into the base station under the action of the base station, so that the cleaning device can realize self-cleaning of the dirt collecting chamber. There is no need to set a separate fan on the base station to clean the dirt collecting chamber. The structure of the base station is simpler, maintenance is more convenient, and the cost is lower.

[0080] In addition, combined Figures 1 to 3 As shown, the cleaning device is also provided with an air duct docking structure 4, through which the second opening 1121 and the base station can be connected. Specifically, the air duct docking structure 4 is provided with a first air guide port 41 connected to the second opening 1121, and a second air guide port 42 connected to the first air guide port 41. The second air guide port 42 can be arranged on the outside of the cleaning device. When the cleaning device is docked with the base station, the second air guide port 42 can be connected to the air duct on the base station, so that the suction device on the cleaning device can be connected to the second opening 1121 and the second air guide port 42, and thus connected to the base station, so that negative pressure can be formed in the base station when the suction device is working.

[0081] In one embodiment, when a clean water tank is also provided on the cleaning device, a guide port 43 may be provided on the air duct docking structure 4, the guide port 43 is connected to the clean water tank, and preferably, the guide port 43 and the second air guide port 42 are located on the same side. When the cleaning device is connected to the base station, the guide port 43 may be connected to a water supply device on the base station (such as a clean water tank of the base station or a tap water pipe docking joint), so that the clean water tank on the cleaning device can be automatically supplied with water through the base station, and the air duct docking structure 4 makes the structure of the air duct and water supply channel in the entire cleaning device more compact and the layout more optimized, thereby occupying less space.

[0082] Obviously, the above described embodiments are only a part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, ordinary technicians in this field can make other different forms of changes or modifications without creative work, which should fall within the scope of protection of the utility model.

Claims

1. An air duct switching structure (100), characterized in that: include: A switching chamber (1), wherein the switching chamber (1) is provided with a first opening (1111) and a second opening (1121) communicating with the inner chamber thereof; A switching member (2) is movably disposed in the switching chamber (1); the switching member (2) moves relative to the switching chamber (1) to open or close the second opening (1121), so that the first opening (1111) can be selectively connected to the second opening (1121).

2. The air duct switching structure (100) according to claim 1, characterized in that: The switching cavity (1) is also provided with a third opening (1122) communicating with the inner cavity thereof; The switching member (2) moves relative to the switching chamber (1) to open or close the third opening (1122), so that the first opening (1111) can be selectively connected to the third opening (1122).

3. The air duct switching structure (100) according to claim 2, characterized in that: The switching chamber (1) is configured to close the third opening (1122) when the second opening (1121) is opened, and is configured to open the third opening (1122) when the second opening (1121) is closed.

4. The air duct switching structure (100) according to claim 3, characterized in that: The switching element (2) comprises: A reversing shaft (21) rotatably mounted on the switching chamber (1); A blocking block (22) protrudes from one side of the reversing shaft (21); The reversing shaft (21) rotates under the action of an external force, driving the blocking block (22) to rotate, so that the blocking block (22) can respectively block the second opening (1121) and the third opening (1122).

5. The air duct switching structure (100) according to claim 4, characterized in that: The air duct switching structure (100) further includes: A driving handle, wherein one of the driving handle and the reversing shaft (21) is provided with an adjustment groove, and the other is provided with an adjustment protrusion that is plugged into and matched with the adjustment groove; The driving handle is rotated by an external force, and the reversing shaft (21) is driven to rotate together with the cooperation of the adjusting groove and the adjusting protrusion.

6. The air duct switching structure (100) according to claim 4, characterized in that: The switching chamber (1) comprises a first inner wall (111), a second inner wall (113), and a transition wall (112) connecting the first inner wall (111) and the second inner wall (113); The first opening (1111) is arranged on the first inner wall (111), the second opening (1121) and the third opening (1122) are arranged on the transition wall (112), the transition wall (112) is arranged in an arc shape, and the shielding block (22) is arranged in an arc shape that is compatible with the transition wall (112).

7. The air duct switching structure (100) according to claim 6, characterized in that: The blocking block (22) comprises a first stop wall (222) and a second stop wall (223) which are arranged in a direction away from each other along the circumference of the reversing shaft (21); Wherein, when the switching member (2) conducts the first opening (1111) and the second opening (1121), the second stop wall (223) forms a stop fit with the second inner wall (113); and when the switching member (2) conducts the first opening (1111) and the third opening (1122), the first stop wall (222) forms a stop fit with the first inner wall (111).

8. The air duct switching structure (100) according to claim 4, characterized in that: The material of the end of the blocking block (22) facing away from the reversing shaft (21) is an elastic material; or, a sealing member is bonded to the end of the blocking block (22) facing away from the reversing shaft (21).

9. The air duct switching structure (100) according to claim 4, characterized in that: The blocking block (22) is provided with a through hole (221) extending along the circumference of the switching cavity (1), and the through hole (221) can connect the first opening (1111) and the third opening (1122).

10. The air duct switching structure (100) according to claim 2 or 3, characterized in that: The switching chamber (1) comprises: A cavity body (11), wherein the first opening (1111), the second opening (1121) and the third opening (1122) are sequentially arranged along the circumference of the cavity body (11); An extension portion (12) is protrudingly arranged on one side of the cavity body (11), and the extension portion (12) is extended outward from the mouth side of the first opening (1111).

11. The air duct switching structure (100) according to claim 2 or 3, characterized in that: The first opening (1111), the second opening (1121) and the third opening (1122) are arranged at intervals along the circumference of the switching chamber (1).

12. The air duct switching structure (100) according to claim 2 or 3, characterized in that: The switching member (2) is rotatably disposed in the switching chamber (1), and has a first working position connecting the first opening (1111) and the second opening (1121), and a second working position connecting the first opening (1111) and the third opening (1122).

13. The air duct switching structure (100) according to claim 2 or 3, characterized in that: The second opening (1121) and the third opening (1122) are located on the same side of the first opening (1111); or, The second opening (1121) and the third opening (1122) are respectively located on two sides of the first opening (1111).

14. The air duct switching structure (100) according to claim 1, characterized in that: The air duct switching structure (100) further includes: A switching driver (3) is arranged outside the switching chamber (1) and is used to drive the switching member (2) to move.

15. An air duct switching structure (100), characterized in that: include: A switching chamber (1), wherein the switching chamber (1) is provided with a first opening (1111), a second opening (1121) and a third opening (1122) communicating with the inner chamber thereof; A switching member (2) is movably disposed in the switching chamber (1), and the switching member (2) is movable relative to the switching chamber (1); The switching element (2) has a first working position in which the first opening (1111) and the second opening (1121) are conductive, and the first opening (1111) and the third opening (1122) are non-conductive.

16. The air duct switching structure (100) according to claim 15, characterized in that: The switching element (2) also has a second working position in which the first opening (1111) and the second opening (1121) are non-conductive, and the first opening (1111) and the third opening (1122) are conductive.

17. The air duct switching structure (100) according to claim 16, characterized in that: The air duct switching structure (100) further includes: A switching driver (3) is used to drive the switching member (2) to move so that the switching member (2) switches between the first working position and the second working position.

18. A cleaning device, characterized in that: It comprises the air duct switching structure (100) as claimed in any one of claims 1 to 17.

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