Dust bag holder, dust box and vacuum cleaner

Abstract

The utility model discloses a dust bag bracket, a dust box and a vacuum cleaner. The dust bag bracket includes a frame for mounting the dust bag to the dust box, and the frame includes: a main body, which can mount the dust bag and is provided with a first dust collection vent for communicating with the dust bag opening; a first connecting part, which is connected to the main body and can be plugged and matched with a second connecting part located in the dust collecting chamber of the dust box; an elastic buckle, which is connected to the main body and / or the first connecting part and can be plugged and matched with a plug-in part located in the dust collecting chamber of the dust box, and can at least limit the dust bag bracket in a direction opposite to the plug-in direction of the first connecting part. In the utility model, the convenience of disassembly and assembly of the dust bag bracket can be improved by using the plug-in and buckle connection in combination.

Description

Technical Field

[0001] The utility model relates to the technical field of cleaning devices, in particular to a dust bag bracket and a dust collecting box for installing a dust bag, and a vacuum cleaner provided with the dust bag bracket and the dust collecting box. Background Art

[0002] A dust bag is generally provided in the dust collecting chamber of a dust bag type vacuum cleaner. The dust and other dirt in the inhaled air can be filtered and collected through the tiny through holes or fiber layers on the surface of the dust bag to prevent them from being inhaled into the pump or other components, and it is also beneficial to keep the equipment clean and work efficient.

[0003] In a conventional dust bag type vacuum cleaner, the dust collecting device is composed of a dust box, a dust bag bracket and a dust bag, and the dust bag is installed in the dust collecting cavity of the dust box through the dust bag bracket. Since the dust bag bracket is usually connected to the side wall of the dust box by multiple screws, not only is the installation process cumbersome and time-consuming, but also, when the dust bag and the dust bag bracket need to be removed when the dust bag is no longer needed, or when the dust bag / dust bag bracket is damaged and needs to be replaced with a new one, it is necessary to use tools such as screwdrivers to disassemble them, and the disassembly process is also cumbersome and time-consuming.

[0004] Therefore, how to improve the convenience of disassembly and assembly of the dust bag bracket is a technical problem that needs to be solved urgently by those skilled in the art. Utility Model Content

[0005] In view of this, the utility model provides a dust bag bracket, a dust collecting box, and a vacuum cleaner provided with the dust bag bracket and the dust collecting box, which can improve the convenience of disassembly and assembly of the dust bag bracket.

[0006] In order to achieve the above-mentioned utility model purpose, the utility model provides the following technical solutions:

[0007] A dust bag bracket comprises a frame body for mounting a dust bag on a dust collection box, the frame body comprising:

[0008] A main body, capable of mounting the dust bag and provided with a first dust collecting ventilation hole for communicating with the opening of the dust bag;

[0009] A first connection portion is connected to the main body and can be plugged and matched with a second connection portion located in the dust collecting cavity of the dust collecting box;

[0010] An elastic buckle is connected to the main body and / or the first connecting part, and can be engaged with a connecting part located in the dust collecting chamber of the dust box, and can at least limit the dust bag bracket in a direction opposite to the plugging direction of the first connecting part.

[0011] Optionally, in the above-mentioned dust bag bracket, the plugging direction of the first connecting part and the second connecting part is perpendicular to the plane where the first dust collecting ventilation hole is located, or is inclined relative to the plane;

[0012] Alternatively, the plugging direction of the first connecting portion and the second connecting portion is parallel to the plane where the first dust collecting ventilation hole is located, or is located in the plane.

[0013] Optionally, in the above dust bag bracket, at least one side of the bracket body is provided with the elastic buckle, and the elastic buckle includes:

[0014] A pressing part, used for manual pressing;

[0015] A limiting portion, used for engaging with the clamping portion to limit position;

[0016] An elastic connecting portion is connected to the main body portion or the first connecting portion, and is connected to a middle area between the pressing portion and the limiting portion.

[0017] Optionally, in the above dust bag bracket, card slots for inserting card boards are respectively provided on both sides of the bottom of the main body;

[0018] The card slot includes:

[0019] The outer end opening is located at an end of the card slot away from the side wall of the dust collecting chamber;

[0020] A limiting protrusion, protrudingly arranged on the inner bottom surface of the card slot;

[0021] The mounting groove is used to accommodate the side edge of the clamping plate and is further away from the outer end opening than the limiting protrusion.

[0022] Optionally, in the above-mentioned dust bag bracket, the inner bottom surface of the outer end opening of the card slot is a guiding inclined surface.

[0023] A dust collecting box is provided with a dust collecting cavity, wherein the dust collecting cavity is provided with:

[0024] The second connection part is connected to the inner wall of the dust box and can be plugged and matched with the first connection part of the dust bag bracket used for installing the dust bag;

[0025] The clamping portion is arranged on the inner wall of the dust box or outside the second connecting portion, and can be engaged with the elastic buckle of the dust bag bracket, and can at least limit the dust bag bracket in a direction opposite to the plugging direction of the second connecting portion.

[0026] A vacuum cleaner comprises the dust collecting box and a dust bag bracket as described above, wherein the dust bag bracket is used for installing the dust bag in the dust collecting cavity of the dust collecting box.

[0027] Optionally, in the above vacuum cleaner, a side edge of the main body close to the side wall of the dust collecting chamber is provided with a force-releasing rib parallel to the plugging direction;

[0028] The side wall of the dust collecting chamber is provided with a limiting groove which is plugged and matched with the unloading rib.

[0029] Optionally, in the above vacuum cleaner, the second connecting portion includes a first slot, and the first connecting portion includes a first column adapted to the first slot;

[0030] Alternatively, the second connecting portion includes a second column, and the first connecting portion includes a second slot adapted to the second column.

[0031] Optionally, in the above vacuum cleaner, the second connecting portion comprises a convex rib arranged on a side wall of the dust collecting chamber of the dust collecting box, the first slot is arranged in the convex rib, and the first slot extends along the side wall of the dust collecting chamber toward the bottom wall of the dust collecting chamber, and the length of the first slot in the extension direction is D1;

[0032] The first connecting portion includes the first column, the first column is located at the bottom of the main body, and the central axis of the first column is perpendicular to the plane where the first dust collecting ventilation hole of the main body is located;

[0033] The insertion length between the first column and the first slot is D2, and D2<D1.

[0034] Compared with the prior art, the utility model has the following beneficial effects: when installing the dust bag holder in the dust box, it is only necessary to plug the dust bag holder into the second connecting part in the dust box through the first connecting part, and then lock it through the elastic buckle. When the dust bag holder needs to be removed, it is only necessary to unlock the elastic buckle and pull the dust bag holder out of the dust box. It can be seen that the dust bag holder provided by the utility model can be quickly disassembled and assembled through simple operations. Compared with the solution of installing the dust bag holder in the dust box by screws in the prior art, the dust bag holder and the dust box provided by the utility model do not need to use tools such as screwdrivers when disassembling and assembling, and can also avoid the loss of fasteners such as screws. There is no need for too much preparation before and after disassembly and assembly, and direct manual operation is sufficient.

[0035] In addition, the vacuum cleaner provided by the utility model also has the above-mentioned beneficial effects because it adopts the above-mentioned dust bag bracket and dust collecting box. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0037] Figure 1 An axonometric diagram of a dust collection box provided in an embodiment of the utility model.

[0038] Figure 2 for Figure 1 A top view of the dust box in FIG.

[0039] Figure 3 This is a structural decomposition explosion diagram of the dust bag bracket, the clamping plate, and the internal connection structure of the dust collecting box provided in an embodiment of the utility model at the connection point.

[0040] Figure 4 and Figure 5 Axonometric views of the dust bag bracket provided in the embodiment of the utility model at different angles.

[0041] Figure 6 The dust bag bracket, the card plate, and the second connecting part in the dust box provided in the embodiment of the utility model are Figure 2 Cross-sectional view at section X in .

[0042] Figure 7 The dust bag bracket, the card plate, and the second connecting part in the dust box provided in the embodiment of the utility model are Figure 2 Cross-sectional view at section Y1 in .

[0043] Figure 8 The dust bag bracket, the card plate, and the second connecting part in the dust box provided in the embodiment of the utility model are Figure 2 Cross-sectional view at section Y2 in .

[0044] in:

[0045] 1-dust box, 2-frame,

[0046] 11-second connecting portion, 12-clamping portion, 13-limiting groove,

[0047] 21-main body, 22-first dust collecting ventilation hole, 23-first connecting part,

[0048] 24-elastic buckle, 241-elastic connecting part, 242-limiting part, 243-operating part,

[0049] 25-outer end opening, 251-guide slope,

[0050] 26-installation slot, 261-limiting protrusion, 28-front end groove,

[0051] 111- lateral slot, 291- reinforcing rib, 292- load relief rib. DETAILED DESCRIPTION

[0052] The utility model provides a dust bag bracket and a dust collecting box, and a vacuum cleaner provided with the dust bag bracket and the dust collecting box, which can realize quick disassembly and assembly of the dust bag bracket through plug-in and snap-on connection, thereby improving the convenience of disassembly and assembly.

[0053] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0054] See also Figures 1 to 8 The dust bag bracket provided by the embodiment of the utility model includes a frame 2 for installing the dust bag to the dust box 1, and the frame 2 includes a main body 21, a first connecting portion 23, and an elastic buckle 24. Among them: the main body 21 can be installed with a dust bag, and is provided with a first dust collection ventilation hole 22 for communicating with the dust bag opening; the first connecting portion 23 is connected to the main body 21, and can be plugged and matched with the second connecting portion 11 located in the dust collecting cavity of the dust box 1; the elastic buckle 24 is installed on the main body 21 and / or the first connecting portion 23, and can be plugged and matched with the plug-in portion 12 located in the dust collecting cavity of the dust box 1, which can at least lock and limit the dust bag bracket in the direction opposite to the plug-in direction of the first connecting portion 23 to prevent the dust bag bracket from falling out. For details, please refer to Figure 6 .

[0055] When installing the dust bag holder in the dust box 1, it is only necessary to plug the dust bag holder into the second connection part 11 in the dust box 1 through the first connection part 23, and then lock it through the elastic buckle 24. When the dust bag holder needs to be removed, it is only necessary to unlock the elastic buckle 24 and pull the dust bag holder out of the dust box 1. It can be seen that the dust bag holder provided by the embodiment of the utility model can be quickly disassembled and assembled through simple operations. Compared with the solution of installing the dust bag holder in the dust box by screws in the prior art, the dust bag holder and the dust box provided by the utility model do not need to use tools such as screwdrivers when disassembling and assembling, and can also avoid the loss of fasteners such as screws. There is no need for too much preparation before and after disassembly and assembly, and direct manual operation is sufficient.

[0056] Specifically, when it is necessary to install the dust bag in the dust box: first install the card plate 3 on the dust bag in the dust bag bracket, and then install the dust bag bracket in the dust box by the above-mentioned plug-in matching and buckle limiting method. Alternatively, the dust bag bracket can be installed in the dust box first, and then the dust bag card plate 3 can be installed on the dust bag bracket. Among them, the card plate 3 is generally located at the opening of the dust bag, installed in the card plate slot of the frame 2, and is provided with a second dust collection ventilation hole corresponding to and connected to the first dust collection ventilation hole 22, that is, the card plate 3 and the frame 2 are provided with dust collection ventilation holes whose positions correspond to each other up and down to allow airflow to enter the dust bag.

[0057] In some embodiments, the plugging direction of the first connecting portion 23 and the second connecting portion 11 is perpendicular to the plane S where the first dust collecting ventilation hole 22 is located (eg Figure 7 ). The plane S where the first dust collecting vent 22 is located is generally a horizontal plane. At this time, when installing the dust bag bracket in the dust box 1, the dust bag bracket needs to be inserted from top to bottom into the second connecting portion 11 in the dust box 1, and then locked by the elastic buckle 24.

[0058] However, it is not limited to this. In other embodiments, the plugging direction of the first connection part 23 and the second connection part 11 can also be parallel to the plane S where the first dust collection ventilation hole 22 is located, or located in the plane S. In this case, the second connection part 11 extending in the horizontal direction is generally provided on the inner side wall of the dust box 1. When installing the dust bag holder in the dust box 1, the dust bag holder needs to be horizontally inserted into the second connection part 11 in the dust box 1, and then locked by the elastic buckle 24. Alternatively, in other embodiments, the plugging direction of the first connection part 23 and the second connection part 11 can also be inclined relative to the plane S where the first dust collection ventilation hole 22 is located. When installing the dust bag holder in the dust box 1, the dust bag holder needs to be inserted into the second connection part 11 in the dust box 1 along the inclined direction, and then locked by the elastic buckle 24.

[0059] In a specific implementation, at least one side of the frame 2 is provided with an elastic buckle 24. The specific structure of the elastic buckle 24 may have optional solutions. For example, see Figure 6 The elastic buckle 24 includes an operating portion 243, a limiting portion 242, and an elastic connecting portion 241, wherein: the operating portion 243 is used for manual pressing; the limiting portion 242 is used for locking and limiting with the clamping portion 12; the elastic connecting portion 241 is connected to the main body 21 or the first connecting portion 23, and is connected to the middle area between the operating portion 243 and the limiting portion 242. For example, see Figure 5 and Figure 6The elastic buckle 24 mainly includes a U-shaped spring sheet structure, and a limiting portion 242 which is located on the outside of the U-shaped spring sheet and protrudes relative to the bottom end of the U-shaped spring sheet. The top of one side of the U-shaped spring sheet is the operating portion 243, and the other side is connected to the bracket main body 21. When the operating portion 243 is pressed manually, the open end of the U-shaped spring sheet is squeezed to cause elastic deformation, and at the same time, the limiting portion 242 is away from the clamping portion 12 in the dust box 1; when the operating portion 243 is released, the opening of the U-shaped spring sheet returns to its original state, so that the limiting portion 242 is reset and clamped with the clamping portion 12 in the dust box 1, so that the dust bag bracket and the dust box 1 are limited in the direction opposite to the plug-in direction. In specific implementation, the plug-in direction can be a vertical direction perpendicular to the horizontal plane (such as Figure 3 It can also be a horizontal direction, or it can be any other direction inclined relative to the horizontal plane.

[0060] In some embodiments, card slots for inserting the card board 3 are respectively arranged on both sides of the bottom of the main body 21 of the dust bag holder. Figure 3 , Figure 5 and Figure 7 The card slot includes an outer opening 25, a limiting protrusion 261, and a mounting groove 26, wherein: the outer opening 25 is located at the end of the card slot away from the side wall of the dust collecting chamber; the limiting protrusion 261 is protrudingly arranged on the inner bottom surface of the card slot near the outer opening 25; the mounting groove 26 is used to accommodate the side of the card 3, which is farther away from the outer opening 25 relative to the limiting protrusion 261 (and closer to the side wall of the dust collecting chamber relative to the limiting protrusion 261). Furthermore, the inner bottom surface of the outer opening 25 of the card slot is a guiding slope 251, which is closer to the outer opening 25 relative to the limiting protrusion 261, and the tail end of the guiding slope 251 is connected to the limiting protrusion 261.

[0061] When the card plate 3 is installed on the dust bag bracket, the card plate 3 enters the card plate slot of the dust bag bracket through the outer end opening 25, falls into the installation groove 26 by gravity, and is limited by the limiting protrusion 261 to prevent the card plate from falling out. When the card plate 3 needs to be removed, the card plate 3 is lifted up and slides out from the outer end opening 25 of the card plate slot. For ease of operation, a front end groove 28 is preferably provided at the front end of the dust bag bracket, which can facilitate the operator to pinch the card plate 3 and remove it from the dust bag bracket.

[0062] The dust collecting box provided by the embodiment of the utility model comprises a dust collecting chamber, in which the second connecting portion 11 and the clamping portion 12 described above are arranged. The second connecting portion 11 is connected to the inner wall of the dust collecting box, and can be plugged and matched with the first connecting portion 23 of the dust bag bracket for installing the dust bag; the clamping portion 12 is arranged on the inner wall of the dust collecting box or outside the second connecting portion 11, and can be plugged and matched with the elastic buckle 24 of the dust bag bracket, which can at least limit the dust bag bracket in the direction opposite to the plugging direction of the second connecting portion 11.

[0063] The vacuum cleaner provided by the embodiment of the utility model comprises the dust collecting box 1 and the dust bag as described above, and the dust bag is installed in the dust collecting cavity of the dust collecting box 1 through the dust bag bracket as described above.

[0064] For further information, see Figure 8 In some embodiments, the main body 21 of the dust bag holder is provided with a force unloading rib 292 on the side near the side wall of the dust collecting chamber, and the side wall of the dust collecting chamber is provided with a limit groove 13 that is plugged with the force unloading rib 292. The plugging direction of the force unloading rib 292 and the limit groove 13 is parallel to the plugging direction between the dust bag holder and the dust collecting box 1. When the first connecting portion 23 of the dust bag holder is plugged with the second connecting portion 11 located in the dust collecting chamber of the dust collecting box 1, the force unloading rib 292 can extend into the limit groove 13 and engage with it. When the dust bag holder is subjected to a downward force F1, the force unloading rib 292 can be pressed against the side wall of the limit groove 13, thereby sharing the force of the first connecting portion 23 of the frame body 2, and playing a role in protecting the plug-in matching structure between the frame body 2 and the dust collecting box 1, that is, avoiding the deformation of the first connecting portion 23 of the frame body 2 and the second connecting portion 11 in the dust collecting chamber of the dust collecting box 1 due to excessive force, thereby preventing the inconvenience of plugging or damage.

[0065] In some embodiments, Figures 1 to 8 As shown in , the second connection part 11 in the dust box 1 includes a first slot, and the first connection part 23 of the dust bag holder includes a first column adapted to the first slot. Alternatively, in other embodiments, the second connection part 11 may include a second column, and the first connection part 23 may include a second slot adapted to the second column; or any other structure capable of achieving sliding plug-in fit, as long as the plug-in fit between the dust bag holder and the dust box 1 can be achieved.

[0066] Specifically, see Figure 3 , Figure 6 and Figure 7In some embodiments, the second connecting portion 11 includes a convex rib arranged on the side wall of the dust collecting chamber of the dust box 1, and a first slot is arranged in the convex rib, and the first slot extends along the side wall of the dust collecting chamber toward the bottom wall of the dust collecting chamber, and its length in the extending direction is D1; ​​the first connecting portion 23 includes a first column, and the first column is located at the bottom of the main body 21, and the central axis L0 of the first column is perpendicular to the plane S where the first dust collecting ventilation hole 22 of the main body 21 is located; the plug-in length of the first column and the first slot is D2, D2<D1, that is, the depth of the first column inserted into the first slot is less than the depth of the first slot itself in the plug-in direction, so that when the free end of the dust bag holder is subjected to the up and down forces, the bottom end of the first column inserted into the first slot can be against the inner wall of the first slot (see Figure 7 F2' and F2'' in the figure) to balance the forces.

[0067] During specific implementation, considering that the main body 21 and the card plate 3 of the dust bag holder are generally parallel to the bottom surface of the dust box, in order to facilitate operation, it is preferred to provide two vertical convex ribs in parallel on the side wall of the dust collecting chamber of the dust box 1, and the outer wall of each convex rib is provided with a clamping portion 12; correspondingly, elastic clips 24 that can be clamped and limited with the clamping portion 12 in the vertical direction are provided on both sides of the main body 21 of the dust bag holder. At this time, the elasticity of the elastic clip 24 means that when the operating portion 243 of the elastic clip 24 (generally located on the outer side of the upper end of the elastic clip 24) is pressed, the limiting portion 242 of the elastic clip 24 (generally located on the inner side of the lower end of the elastic clip 24) can be controlled to be away from the clamping portion 12 in the dust box 1; after releasing the hand, the elastic clip 24 can automatically control the limiting portion 242 to reset and clamp with the clamping portion 12 in the dust box 1 through the elastic connecting portion 241, so that the dust bag holder and the dust box 1 are limited in the direction opposite to the plug-in direction.

[0068] Specifically, the clamping portion 12 may include a barb protruding from the outer side wall, and the barb may be a horizontal protrusion with a flat bottom surface, or a curved hook with a grooved bottom surface, as long as it can be engaged with the elastic buckle 24 to limit the upward movement of the frame. Alternatively, in other embodiments, the clamping portion 12 may also be configured as a slot located on the outer side wall of the rib, as long as the limiting portion 242 of the elastic buckle 24 can extend into the slot and be engaged with it in a vertical direction.

[0069] In a specific implementation, the dust bag bracket is installed in the dust box. When it is subjected to a vertical upward and downward pulling / pressing force, the limiting parts 242 on both sides of the elastic buckle 24 are supported by force; when the free end of the dust bag bracket receives a pressing or pulling force F1, the force point of the dust bag bracket is mainly at the top notch of the first slot (i.e., the second connecting part 11) inserted into the vertical convex rib on the inner wall of the dust box. In addition, the first column (i.e., the first connecting part 23) at the bottom of the dust bag bracket is also partially subjected to force between the bottom end in the first slot and the inner side wall of the slot (see details). Figure 7 F2' and F2'' in the figure), thereby balancing the force.

[0070] In some embodiments, a reinforcing rib 291 is further provided between the bottom surface of the frame body 2 and the outer side wall of the first connecting portion 23; correspondingly, a lateral slot 111 adapted to the reinforcing rib 291 is provided on the top side of the second connecting portion 11. When the first connecting portion 23 of the dust bag holder is plugged into the second connecting portion 11 located in the dust collecting chamber of the dust box 1, the reinforcing rib 291 is inserted into the lateral slot 111, which plays a limiting role and can also reinforce the connection between the first connecting portion 23 and the main body 21.

[0071] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed.

[0072] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0073] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A dust bag holder, comprising a frame for mounting a dust bag to a dust box, characterized in that: The frame comprises: A main body, capable of mounting the dust bag and provided with a first dust collecting ventilation hole for communicating with the opening of the dust bag; A first connection portion is connected to the main body and can be plugged and matched with a second connection portion located in the dust collecting cavity of the dust collecting box; An elastic buckle is connected to the main body and / or the first connecting part, and can be engaged with a connecting part located in the dust collecting chamber of the dust box, and can at least limit the dust bag bracket in a direction opposite to the plugging direction of the first connecting part.

2. The dust bag holder according to claim 1, characterized in that: The plugging direction of the first connecting part and the second connecting part is perpendicular to the plane where the first dust collecting ventilation hole is located, or is inclined relative to the plane; Alternatively, the plugging direction of the first connecting portion and the second connecting portion is parallel to the plane where the first dust collecting ventilation hole is located, or is located in the plane.

3. The dust bag holder according to claim 1, characterized in that: The elastic buckle is provided on at least one side of the frame, and the elastic buckle comprises: A pressing part, used for manual pressing; A limiting portion, used for engaging with the clamping portion to limit position; An elastic connecting portion is connected to the main body portion or the first connecting portion, and is connected to a middle area between the pressing portion and the limiting portion.

4. The dust bag holder according to claim 1, characterized in that: Both sides of the bottom of the main body are respectively provided with card slots for inserting card boards; The card slot includes: The outer end opening is located at an end of the card slot away from the side wall of the dust collecting chamber; A limiting protrusion, protrudingly arranged on the inner bottom surface of the card slot; The mounting groove is used to accommodate the side edge of the clamping plate and is further away from the outer end opening than the limiting protrusion.

5. The dust bag holder according to claim 4, characterized in that: The inner bottom surface of the outer end opening of the card slot is a guiding inclined surface.

6. A dust collecting box, provided with a dust collecting chamber, characterized in that: The dust collecting chamber is provided with: The second connection part is connected to the inner wall of the dust box and can be plugged and matched with the first connection part of the dust bag bracket used for installing the dust bag; The clamping portion is arranged on the inner wall of the dust box or outside the second connecting portion, and can be engaged with the elastic buckle of the dust bag bracket, and can at least limit the dust bag bracket in a direction opposite to the plugging direction of the second connecting portion.

7. A vacuum cleaner, comprising a dust box and a dust bag holder, wherein the dust bag holder is used to install the dust bag in the dust collecting cavity of the dust box, characterized in that: The dust bag bracket is the dust bag bracket according to any one of claims 1 to 5; The dust box is the dust box according to claim 6.

8. The vacuum cleaner according to claim 7, characterized in that: The side of the main body close to the side wall of the dust collecting chamber is provided with a force unloading rib parallel to the plugging direction; The side wall of the dust collecting chamber is provided with a limiting groove which is plugged and matched with the unloading rib.

9. The vacuum cleaner according to claim 7, characterized in that: The second connecting portion includes a first slot, and the first connecting portion includes a first column adapted to the first slot; Alternatively, the second connecting portion includes a second column, and the first connecting portion includes a second slot adapted to the second column.

10. The vacuum cleaner according to claim 9, characterized in that: The second connecting portion includes a convex rib disposed on the side wall of the dust collecting chamber of the dust collecting box, the first slot is disposed in the convex rib, and the first slot extends along the side wall of the dust collecting chamber toward the bottom wall of the dust collecting chamber, and the length of the first slot in the extension direction is D1; The first connecting portion includes the first column, the first column is located at the bottom of the main body, and the central axis of the first column is perpendicular to the plane where the first dust collecting ventilation hole of the main body is located; The insertion length between the first column and the first slot is D2, and D2<D1.

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