Dust cup assembly and surface cleaning device

Abstract

The application discloses a surface cleaning equipment, and a dust cup assembly in the surface cleaning equipment comprises a cyclone separation chamber, and the cyclone separation chamber comprises an air inlet and an air outlet. The dust cup assembly further comprises a filter structure arranged at the air outlet, the filter structure is rotatably mounted to a mounting frame, and the filter structure is used for filtering air flow before the air flow is discharged from the air outlet. The filter structure comprises a first end close to the air outlet and a second end away from the air outlet, and the first end of the filter structure is in clearance fit with the mounting frame. In order to prevent dust from entering the inside of the filter structure from the clearance, the dust cup assembly is further provided with a blocking piece, the blocking piece is arranged in one of the filter structure or the mounting frame, and is in interference fit with the other one. By arranging the blocking piece and through the interference fit, the probability of dust entering the inside of the filter structure can be effectively reduced, the normal operation of the dust collector is ensured, and the service life of the surface cleaning equipment is increased.

Description

Technical Field

[0001] This invention relates to the field of cleaning equipment technology, and in particular to a dust cup assembly and a surface cleaning device. Background Technology

[0002] Cyclone separators are widely used in vacuum cleaners. To further improve the separation effect of the filter separator, a rotatable filter structure is added to the cyclone separator. The rotatable filter structure can improve the filtration effect.

[0003] However, since the filter structure and the mounting bracket are rotatable, there will be a gap between them. The presence of this gap will allow dust to enter the filter, affecting the operation and dust removal efficiency of the vacuum cleaner. Summary of the Invention

[0004] To address the shortcomings of the aforementioned technologies, this invention provides a dust cup assembly and a surface cleaning device that can effectively prevent dust from entering the interior of the filter structure, thereby ensuring the normal operation of the vacuum cleaner.

[0005] On one hand, the present invention provides a dust cup assembly, including

[0006] Cyclone separator, which includes an air inlet and an air outlet;

[0007] A filter structure is disposed at the air outlet, the filter structure is rotatably mounted to the mounting frame, and is used to filter the airflow before it is discharged from the air outlet. The filter structure includes a first end near the air outlet and a second end away from the air outlet, and the first end of the filter structure and the mounting frame are clearance-fitted.

[0008] A blocking element is disposed in one of the filter structure or the mounting bracket and is interference-fitted with the other.

[0009] Optionally, a protective plate extending outward in a radial direction is provided on the outer periphery of the first end; the protective plate and the mounting bracket are clearance-fitted and form a channel between them, with at least a portion of the blocking member located within the channel.

[0010] Optionally, the mounting bracket is provided with a downwardly protruding retaining ring, and a channel is defined between the protective plate and the retaining ring.

[0011] Optionally, the retaining ring is higher than the protective plate, and some of the blocking components are located below the retaining ring.

[0012] Optionally, the blocking element is disposed at the first end of the filter structure.

[0013] Optionally, the blocking member is an annular brush; the brush includes multiple outwardly extending bristles.

[0014] Optionally, the blocking element is disposed between the protective plate and the mounting bracket.

[0015] Optionally, the dust cup assembly further includes a dust collection chamber connected to the cyclone separation chamber via a dust ejection port; a baffle is provided at the dust ejection port, and the baffle is inclined toward the bottom of the dust collection chamber.

[0016] Optionally, the baffle is an arc-shaped baffle.

[0017] On the other hand, the present invention also provides a surface cleaning device, the surface cleaning device comprising a fan assembly for generating a suction airflow and the dust cup assembly described above.

[0018] This invention provides a surface cleaning device. The dust cup assembly in the surface cleaning device includes a cyclone separation chamber, which includes an air inlet and an air outlet. The dust cup assembly also includes a filter structure disposed at the air outlet. The filter structure is rotatably mounted to a mounting bracket for filtering the airflow before it exits from the air outlet. The filter structure includes a first end near the air outlet and a second end away from the air outlet, with a clearance fit between the first end of the filter structure and the mounting bracket. To prevent dust from entering the filter structure through the clearance, the dust cup assembly also includes a blocking element. The blocking element is disposed in either the filter structure or the mounting bracket and is interference-fitted with the other. By providing the blocking element and the interference fit, the probability of dust entering the filter structure can be effectively reduced, ensuring the normal operation of the vacuum cleaner and increasing the service life of the surface cleaning device. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of a handheld vacuum cleaner according to an embodiment of the present invention;

[0020] Figure 2 For along Figure 1 A cross-sectional view along the FF direction;

[0021] Figure 3 For along Figure 1 Cross-sectional view along the EE direction;

[0022] Figure 4 For along Figure 1 Cross-sectional view along the GG direction;

[0023] Figure 5 This is a schematic diagram of the dust cup assembly in one embodiment;

[0024] Figure 6 For along Figure 5 A cross-sectional view along the AA direction;

[0025] Figure 7 For along Figure 5 A cross-sectional view taken at another angle along the AA direction;

[0026] Figure 8 for Figure 6 A magnified view of a portion of region A in the middle;

[0027] Figure 9 An exploded view of the rotating structure in the dust cup assembly;

[0028] Figure 10 This is a schematic diagram of the fan structure in one embodiment;

[0029] Figure 11 This is a schematic diagram of the filter frame in one embodiment;

[0030] Figure 12 This is a schematic diagram of the filter frame viewed from the second end towards the first end.

[0031] Figure 13 A cross-sectional view of the dust cup assembly in another embodiment;

[0032] Figure 14 This is a schematic diagram of the filter structure in another embodiment;

[0033] Figure 15 This is a schematic diagram of the dust cup assembly in another embodiment of the present invention;

[0034] Figure 16 for Figure 15 Enlarged view of region B in the image;

[0035] Figure 17 for Figure 15 Enlarged view of region C in the image;

[0036] Figure 18 This diagram shows the relative positions of the filter structure, blocking components, and mounting bracket.

[0037] Figure 19 This is a schematic diagram of the structure of a ring-shaped brush in one embodiment. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0039] It should be noted that if the embodiments of the present invention involve directional indication, the directional indication is only used to explain the relative positional relationship and movement of the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0040] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0041] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art will understand the specific meaning of the above terms in this application based on the specific circumstances.

[0042] Figure 1 This is a schematic diagram of the structure of a handheld vacuum cleaner according to an embodiment of the present invention. Figure 2 For along Figure 1 A cross-sectional view along the FF direction. Figure 3 For along Figure 1 A cross-sectional view along the EE direction. Figure 4 For along Figure 1 A cross-sectional view along the GG direction. Figure 5 This is a schematic diagram of the dust cup assembly in one embodiment. Figure 6 For along Figure 5 A cross-sectional view along the AA direction. Figure 7 For along Figure 5 A cross-sectional view taken at another angle along the AA direction. Figure 8 for Figure 6 A magnified view of a portion of region A in the middle. Figure 9 This is an exploded view of the rotating structure in the dust cup assembly. Figure 10 This is a schematic diagram of the fan structure in one embodiment. Figure 11 This is a schematic diagram of the filter holder in one embodiment. Figure 12 This is a schematic diagram of the filter frame viewed from the second end towards the first end. (Reference) Figure 1-4A handheld vacuum cleaner 10 is disclosed. In the figure, the X-direction of the handheld vacuum cleaner is the length direction, the Y-direction is the width direction, and the Z-direction is the height direction. The handheld vacuum cleaner 10 includes a body 2, a dust cup assembly 1, a fan assembly 3, a battery pack 4, and a filter 33. The dust cup assembly 1, the fan assembly 3, the battery pack 4, and the filter 33 are all detachably mounted on the body 2. The battery pack 4 provides power to the fan assembly 3, which generates a suction airflow that draws dirt from the surface to be cleaned into the dust cup assembly 1 along the suction pipe. The battery pack 4 is located at the lower end of the handle 22 and provides power to the motor in the fan assembly 3.

[0043] Continue to refer to Figure 1-4 The handheld vacuum cleaner includes a body 2, a fan assembly 3, a dust cup assembly 1, and a battery pack 4. The body 2 includes a handle 22 for gripping and defines a suction pipe. The fan assembly 3 is disposed on the body 2 and generates suction airflow. The fan assembly 3 is located above the handle. The dust cup assembly 1 is disposed on the body 2 along the extension direction of the suction pipe, in front of the fan assembly. The battery pack 4 is located at the lower end of the handle 22 and provides power to the fan in the fan assembly. The fan assembly includes a fan and a filter; along the width of the handheld vacuum cleaner, the fan and filter are located on opposite sides of the handle axis O, respectively. Figure 3 The dust cup assembly includes a cyclone separation chamber 12 and a dust collection chamber 13, which are connected by a dust ejection port 14. The cyclone separation chamber 12 and the dust collection chamber 13 are arranged side by side along the width of the handheld vacuum cleaner. The fan assembly and battery pack are respectively located at both ends of the handle, while the fan 31 and filter 33 are respectively located on both sides of the handle axis O, so that the battery pack 2, fan 31 and filter 33 form a triangular positional relationship. With this structural design, the arrangement of the handheld vacuum cleaner can be more reasonable, and the feel will not change much even if the user uses different angles.

[0044] refer to Figure 5-12The dust cup assembly of the vacuum cleaner includes a cyclone separation chamber 12 and a dust collection chamber 13. The cyclone separation chamber 12 is located outside the dust collection chamber 13 and communicates with the dust collection chamber 13 through a dust ejection port 14. The cyclone separation chamber 12 also includes an air inlet 122 and an air outlet 123, which are located at opposite ends of the cyclone separation chamber 12. Here, "ends" does not specifically refer to the bottom wall; the end can include the bottom wall of the end wall and a short section of the side wall connected to the bottom wall. The "ends" described here include the air inlet 122 and the air outlet 123 being located on two opposite bottom walls of the cyclone separation chamber 12, or one of the air inlet 122 and the air outlet 123 being located on the bottom wall and the other on the side wall. The fact that the air inlet 122 and the air outlet 123 are located at opposite ends of the cyclone separator 12 can also be understood as follows: the air inlet 122 and the air outlet 123 are not located at one end, but are separately located. At least relative to the middle position of the cyclone separator 12, the air inlet 122 and the air outlet 123 are respectively located on both sides of the middle position and near the bottom wall or located on the bottom wall. (Reference) Figure 5-12 The dust cup assembly also includes a filter structure 7 disposed at the air outlet 123. The filter structure 7 is rotatably disposed at the air outlet 123 to filter the airflow before it is discharged from the air outlet 123. The filter structure 7 includes a filter frame 71 and a filter screen 74 disposed on the filter frame 71. The filter screen 74 can be a metal mesh, which can be fixed to the filter frame 71 by adhesive or other means after processing. Of course, the filter screen 74 can also be integrally formed with the filter frame 71. The filter structure 7 also includes at least one guide rib 76 disposed on the outer side of the filter screen 74. The guide rib 76 protrudes from the outer surface formed by the filter screen 74 and extends along both the circumferential and length directions of the filter structure 7. The guide rib 76 can prevent hair and other objects from coming into close contact with the filter screen 74, and can guide the hair to move downwards so that the hair can be removed from the filter structure 7. Reference Figure 11-12 The filter frame 71 includes a fan mounting bracket 78 and a bearing mounting bracket, which are connected by multiple guide ribs 76. The number of guide ribs 76 is greater than or equal to three, which not only makes the structure more stable but also facilitates hair removal. The multiple guide ribs 76 define a frustum-shaped or truncated pyramid-shaped receiving space. The filter frame 71 and the guide ribs 76 can be integrally formed, and the filter screen 74 is disposed inside the guide ribs 76. (Reference) Figure 6 and 7At least a portion of the filter screen 74, projected along the rotation axis P perpendicular to the filter structure 7 towards the location of the dust-throwing port 14, falls into the area where the dust-throwing port 14 is located. By positioning the rotating structure in the area corresponding to the dust-throwing port 14, the rotating filter structure 7 can simultaneously guide or agitate dust and debris towards the dust-throwing port 14, accelerating the entry of dust into the port and improving separation efficiency. Simultaneously, since the rotation direction of the filter structure 7 is the same as the rotation direction within the cyclone separation chamber 12, the probability of hair entanglement can be effectively reduced. This is because if the rotation direction of the filter structure 7 is the same as the rotation direction of the dust, the speed difference between the two can be effectively reduced. Furthermore, due to the centrifugal force of the filter structure 7, hair can be directly thrown towards the dust-throwing port 14.

[0045] refer to Figure 11-12 The outer diameter of the filter structure 7 gradually decreases in the direction away from the air outlet 123. This means that hair wrapped around the filter frame 71 is gradually flung off during the rotation of the filter structure 7 and then enters the dust-throwing port 14. Specifically, the filter structure 7 includes a first end 711 near the air outlet 123 and a second end 712 away from the air outlet 123, with the outer diameter of the first end 711 being larger than that of the second end 712. The second end 712 is suspended within the cyclone separation chamber 12, and the outer diameter of the filter structure 7 gradually decreases in the direction away from the air outlet 123. This means the outer diameter of the fan mounting bracket 78 is larger than the outer diameter of the bearing mounting bracket 79. This allows the filter structure 7 to be suspended within the cyclone separation chamber 12 like a frustum of a cone, facilitating hair removal from the second end 712. The first end 711 of the filter structure 7 is suspended relative to the mounting bracket 75. The filter structure 7 as a whole can be frustum of a cone or pyramidal in shape to facilitate hair removal. To further increase the probability of hair loss, the guide rib 76 extends along both the circumferential and longitudinal directions of the filter structure 7.

[0046] refer to Figure 8 and 9 The dust cup assembly also includes a mounting bracket 75 for supporting the filter structure 7. The mounting bracket 75 is located at the air outlet 123 and is used to support the filter structure 7. The mounting bracket 75 being located at the air outlet 123 can be understood as either being located within the air outlet 123 or near its upstream or downstream location; the specific location is not limited here. The filter structure 7 includes a first end 711 near the air outlet 123 and a second end 712 away from the air outlet 123. The first end 711 is suspended relative to the mounting bracket 75, and the second end 712 is rotatably mounted to the mounting bracket 75, allowing the filter structure 7 to rotate relative to the mounting bracket 75. (Reference) Figure 8 and 9The mounting bracket 75 includes a support member 751 fixed to the air outlet 123. The support member 751 is a cross-shaped support structure. Of course, in other implementations, the support member 751 can be any support structure. The support structure is used to rotatably mount the filter structure 7 to the air outlet 123. To facilitate the assembly and disassembly of the filter structure 7, the filter structure 7 is mounted to one end of the fixed shaft 752 via a bearing 753. The other end of the fixed shaft 752 is fixed to the support structure, so that the fixed shaft 752 is stationary relative to the support structure. The advantage of the fixed shaft 752 being stationary relative to the support structure is that it reduces the probability of hair getting entangled inside the filter structure 7. Furthermore, the fixed shaft 752 is detachably mounted to the support structure, so that the user can easily disassemble it to clean the filter structure 7. Even if hair or other debris remains inside the filter structure 7, the user only needs to clean it. In one implementation, the outer periphery of the end of the fixed shaft 752 away from the bearing 753 is provided with an elastic material that is interference-fitted with the mounting bracket 75. In other implementations, the fixed shaft 752 can also be detachably mounted on the mounting bracket 75 via threaded connection, snap-fit, or other means.

[0047] refer to Figure 11 and 12 The filter frame 71 has a bearing mounting bracket 79 with a receiving groove 713. At least one bearing 753 is housed within the receiving groove 713, and the filter frame 71 is rotatably mounted to the mounting frame 75 via the bearing 753. The receiving groove 713 includes a bottom wall and a peripheral wall extending upwards along the periphery of the bottom wall. The bottom wall and the peripheral wall together define the receiving groove 713, which includes an opening for mounting the bearing 753. This arrangement of the receiving groove 713 effectively prevents debris from entering and affecting the smooth operation of the bearing 753. Two bearings 753 are arranged side-by-side along the axial direction. The side-by-side arrangement of the two bearings 753 effectively increases the stability of the filter structure 7. The end of the fixed shaft 752 furthest from the bearing 753 is detachably mounted to the mounting frame 75. The length of the bearing mounting bracket 79 can be adjusted according to actual conditions. Specifically, the bearing mounting bracket 79 can extend to or even exceed the first end 711 of the filter structure 7. This reduces the length of the fixed shaft 752 or accommodates a shorter filter structure 7. Even if the bearing mounting bracket 79 is relatively long, as long as the first end 711 of the filter structure 7 is suspended relative to the mounting bracket 75 or other fixed structure and the two move relative to each other, it can be understood that the filter structure 7 is rotatably mounted via the second end 712.

[0048] Continue to refer to Figure 8 , 11Filter structure 7 includes a first end 711 near the air outlet 123 and a second end 712 away from the air outlet 123. A protective plate 77 extending radially outward is provided on the outer periphery of the first end 711. The dust cup assembly also includes a filter bracket. The protective plate 77 and the filter bracket are fitted with a clearance and form a tortuous channel between them to prevent dust and hair from entering.

[0049] Filter structure 7 can be driven by a driving component. In some implementations, refer to... Figure 6-10 A fan 8 is installed inside the filter structure 7. The fan 8 rotates due to the airflow flowing out of the air outlet 123, thereby driving the filter structure 7 to rotate. The fan includes multiple fan blades, which can be located inside the first filter or on the outer periphery of the first filter, i.e., the outer periphery of the filter screen. Furthermore, the fan blades can be integrally formed with guide ribs, i.e., the guide ribs function as fan blades. The guide ribs can drive the first filter to rotate under the action of airflow. The fan 8 includes a proximal end 84 near the rotation axis P and a distal end 83 away from the rotation axis P in the radial direction. The proximal end 84 of the fan 8 is suspended relative to the mounting bracket 75. In one implementation, the fan 8 can be annular, with a hollow structure at the center of the fan 8 to facilitate the passage of objects. The fan 8 includes multiple fan blades 81, with both ends of the fan blades 81 fixed to corresponding rings. The space defined by the inner rings ensures that objects can pass freely. Furthermore, the fan 8 includes multiple fan blades 81, and the proximal ends 84 of the multiple fan blades 81 are all suspended. In one embodiment, the fan blade 81 can be directly molded onto the filter frame 71. In another embodiment, the fan 8 can be a separately manufactured part, which, after manufacturing, can be fixed to the inside or outside of the filter frame 71 by means of snap-fit, adhesive, or ultrasonic welding. The fan blade 81 is suspended, which increases the airflow area and effectively prevents hair from getting tangled on the fan blade 81.

[0050] Figure 13 This is a cross-sectional view of the dust cup assembly in another embodiment. Figure 14 This is a schematic diagram of the filter structure in another embodiment. (Reference) Figure 13 and 14 Except for the installation method of filter structure 7, which differs from other embodiments, the other structures in this embodiment can all adopt the structures described in the above embodiments. (See reference...) Figure 13-14 In another implementation, an outer bearing 82 is provided on the outer periphery of the filter structure 77, and it is mounted at the air outlet 123 via the outer bearing 82. In this way, the interior of the filter structure 77 is basically empty, and hair will not get tangled in it, thus improving the reliability of the filter structure 77.

[0051] refer to Figure 6 and 7A baffle 9 extending into the dust collection chamber 13 is provided at the dust discharge port 14 to prevent some of the dirt in the dust collection chamber 13 from being drawn back into the cyclone separation chamber 12. Since the filter structure 7 is relatively close to the dust discharge port 14, a baffle 9 extending into the dust collection chamber 13 is provided at the dust discharge port 14 to prevent dust in the dust collection chamber 13 from being drawn back into the cyclone separation chamber 12. The baffle 9 can be a straight baffle 9 or a curved baffle 9, and the suspended end of the baffle 9 can be inclined towards the bottom of the dust collection chamber 13 to achieve a better anti-backflow effect. To further prevent hair in the dust collection chamber 13 from being drawn back into the cyclone separation chamber 12, at least one protrusion 92 protruding towards the bottom of the dust collection chamber 13 is provided on the side of the baffle 9 facing the bottom of the dust collection chamber 13. In this way, when hair enters the dust collection chamber 13, due to the disturbance of the airflow, the hair will first go to the bottom of the baffle 9. Some of the hair may return to the dust discharge port 14 along the edge of the baffle 9. If a protrusion 92 is provided below the baffle 9, especially multiple separate protrusions 92, the hair and dust can be effectively fixed to the protrusion 92 to prevent them from being drawn back.

[0052] In other implementations, the filter structure 7 can also be driven by a motor. Gear teeth can be provided on the peripheral wall of the filter structure 7, and the motor is located on one side of the filter structure 7, driving the filter structure 7 to rotate through a gear or other transmission structure. An outer bearing 82 is provided on the outer periphery of the filter structure 7, thus ensuring that the internal space of the filter structure 7 is unobstructed and reducing the failure rate. It is understood that the filter structure 7 can also be driven by a drive component using other transmission methods, which will not be detailed here.

[0053] In one embodiment, with all other structures remaining unchanged, the filter structure 7 includes a first end 711 near the air outlet 123 and a second end 712 away from the air outlet 123. The height direction is defined along the axis of rotation P, with the first end 711 higher than the second end 712. The lowest point of the second end 712 along the height direction is higher than the bottom of the dust ejection port 14 but lower than the top of the dust ejection port 14. This configuration is suitable for dust cups with relatively low heights. This embodiment is not shown in the figures but can be referenced. Figure 6 , Figure 6 As shown, L1 is located below L2, meaning the lowest point L1 of the filter mechanism is lower than the lowest point L2 of the ash-throwing port 14. However, in this embodiment, L1 should be located above L2.

[0054] In one embodiment, with all other structures remaining unchanged, the filter structure 7 includes a first end 711 near the air outlet 123 and a second end 712 away from the air outlet 123. The height direction is the direction extending along the rotation axis PP, and the first end 711 is higher than the second end 712. The lowest point of the second end 712 along the height direction is basically level with the bottom of the dust discharge port 14, that is, L1 should be basically level with L2. This situation is suitable for dust cups with relatively high heights.

[0055] In one embodiment, with all other structures remaining unchanged, a portion of the filter screen 74 projected toward the location of the ash-throwing port 14 along the rotation axis P perpendicular to the filter structure falls into the area where the ash-throwing port 14 is located.

[0056] Figure 15 This is a schematic diagram of the dust cup assembly in another embodiment of the present invention. Figure 16 for Figure 15 A magnified view of region B in the image. Figure 17 for Figure 15 A magnified view of region C in the image. Figure 18 This is a diagram showing the relative positions of the filter structure, the blocking components, and the mounting bracket. Figure 19 This is a schematic diagram of the annular brush structure in one embodiment. In this embodiment, the structure of the dust cup assembly 1 is basically the same as that in the other embodiments described above, except that a blocking element 721 is added between the first end 711 of the filter structure 7 and the mounting bracket 75, and the baffle 9 at the dust outlet 14 is also modified. The specific structure is as follows:

[0057] refer to Figure 15-18 The dust cup assembly 1 includes a cyclone separation chamber 12, which comprises an air inlet and an air outlet. The dust cup assembly also includes a filter structure 7 disposed at the air outlet. The filter structure 7 is rotatably mounted to a mounting bracket 75 for filtering the airflow before it exits from the air outlet. The filter structure 7 includes a first end 711 near the air outlet and a second end 712 away from the air outlet. The first end 711 of the filter structure 7 and the mounting bracket 75 are clearance-fitted. To prevent dust from entering the filter interior through the gap as much as possible, a blocking member 721 may be provided at the gap. Specifically, the blocking member 721 may be disposed in either the filter structure 7 or the mounting bracket 75 and interference-fitted with the other. The blocking member 721 may be disposed in the mounting bracket 75, interference-fitted with the filter structure 7, and stationary when the filter structure 7 rotates. Alternatively, the blocking member 721 may be mounted on the filter structure 7 and rotates with it, interference-fitted with the mounting bracket 75 to prevent dust from entering the gap. The blocking element 721 can be a relatively soft annular strip, or it can be an annular brush 721. (See reference) Figure 19The brush 721 includes an annular plate 722 and multiple bristles 723 disposed on the annular plate 722. The annular plate 722 has multiple outwardly extending bristles 723. The bristles 723 can be made of soft material. When the soft bristles 723 come into contact with the mounting bracket 75 or the filter structure 7, the friction generated is small and will not affect the rotation of the filter structure 7. At the same time, the bristles 723 are interference-fitted with one of them, effectively preventing dust from entering the gap between them.

[0058] Continue to refer to Figure 15-19 A protective plate 77 extending radially outward is provided on the outer periphery of the first end 711. The protective plate 77 extends radially, and a clearance fit is formed between the protective plate 77 and the mounting bracket 75, creating a channel between them. The protective plate 77 effectively prevents hair and other contaminants from entering the channel. An annular groove is defined between the protective plate 77 and the filter frame of the filter structure 7 to further prevent hair and other contaminants from tangling. The protective plate 77 includes an axially extending body and a radially extending shielding portion. A receiving space is defined between the body and the shielding portion for accommodating a blocking member 721. To effectively prevent dust from entering the channel, at least a portion of the blocking member 721 is located within the channel. The blocking member 721 is provided at the first end 711 of the filter structure 7. The blocking member 721 can be positioned above the protective plate 77, with a portion of the blocking member 721 protruding radially from the protective plate 77 and extending into the channel, where it is interference-fitted with the mounting bracket 75. A downwardly protruding retaining ring 724 is provided on the mounting bracket 75, and a channel is defined between the protective plate 77 and the retaining ring 724. The retaining ring 724 is higher than the protective plate 77, and part of the blocking element 721 is located below the retaining ring 724. Specifically, the blocking element 721 is disposed between the protective plate 77 and the mounting bracket 75. Especially when a brush 721 is used, some of the bristles 723 press against the inside of the retaining ring 724, and some of the bristles 723 extend to the bottom of the retaining ring 724, which can effectively prevent dust from entering.

[0059] refer to Figure 15 and 17 The dust cup assembly 1 also includes a dust collection chamber 13 connected to the cyclone separation chamber 12 via a dust ejection port 14. A baffle 9 is provided at the dust ejection port 14, and the baffle 9 is inclined towards the bottom of the dust collection chamber 13. The baffle 9 is an arc-shaped baffle. The inclined design of the baffle 9, especially its arc shape, can effectively guide dust into the dust collection chamber 13. A protrusion 92 is provided below the baffle 9, which can effectively prevent hair and other particles from being drawn back into the cyclone separation chamber 12.

[0060] The dust cup assembly in any of the above embodiments can be used in related surface cleaning equipment such as robot vacuum cleaners, canister vacuum cleaners, upright vacuum cleaners, or mite removers. This is just an example and is not limited to the above-mentioned cleaning equipment. It can also be other indoor or outdoor cleaning equipment.

[0061] Although embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for the present invention. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. A dust cup assembly, characterized in that, include: Cyclone separator, which includes an air inlet and an air outlet; A filter structure is disposed at the air outlet, the filter structure is rotatably mounted to the mounting frame, and is used to filter the airflow before it is discharged from the air outlet. The filter structure includes a first end near the air outlet and a second end away from the air outlet, and the first end of the filter structure and the mounting frame are clearance-fitted. A blocking element is disposed in one of the filter structure or the mounting bracket and is interference-fitted with the other; a protective plate extending outward in a radial direction is provided on the outer periphery of the first end; the protective plate and the mounting bracket are clearance-fitted and form a channel between them, at least part of the blocking element is located in the channel; the blocking element is an annular brush; the brush includes multiple outwardly extending bristles.

2. The dust cup assembly as described in claim 1, characterized in that, The mounting bracket is provided with a downwardly protruding retaining ring, and a channel is defined between the protective plate and the retaining ring.

3. The dust cup assembly as described in claim 2, characterized in that, The retaining ring is higher than the protective plate, and some of the blocking components are located below the retaining ring.

4. The dust cup assembly as described in claim 1, characterized in that, include The blocking element is disposed at the first end of the filter structure.

5. The dust cup assembly as described in claim 1, characterized in that, The blocking element is disposed between the protective plate and the mounting bracket.

6. The dust cup assembly as described in claim 4, characterized in that, The dust cup assembly also includes a dust collection chamber connected to the cyclone separation chamber via a dust ejection port; a baffle is provided at the dust ejection port, and the baffle is inclined toward the bottom of the dust collection chamber.

7. The dust cup assembly as described in claim 6, characterized in that, The baffle is an arc-shaped baffle.

8. A surface cleaning device, characterized in that, The surface cleaning device includes a fan assembly for generating a suction airflow and a dust cup assembly as described in any one of claims 1-7.

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