A multi-stage cyclonic hand vacuum cleaner

Abstract

The application belongs to the technical field of dust collection equipment, and particularly relates to a multi-stage cyclone handheld dust collector, which comprises a guide and discharge assembly, a cup body, a filter element, a fifth ring body, a dust removal assembly, a rod body and an eighth ring body.

Description

Technical Field

[0001] This invention belongs to the technical field of vacuum cleaner equipment, specifically a multi-stage cyclone handheld vacuum cleaner. Background Technology

[0002] Handheld vacuum cleaners, due to their small size and ease of use, are widely used for collecting dust and debris from household floors, crevices, soft furnishings, and vehicle interiors. To improve air-solid separation capabilities within a limited body size, current handheld vacuum cleaners often employ multi-stage cyclone separation structures. The initial cyclone stage performs preliminary separation of larger particles, while the subsequent cyclone stage further separates finer particles. This allows the dust-laden airflow to undergo multiple particle settling processes before entering the filter, thereby reducing the burden on the filter and maintaining the overall vacuuming performance.

[0003] Existing multi-stage cyclone handheld vacuum cleaners typically rely solely on the opening of the dust cup to allow dust to fall naturally during dust removal. This lack of coordination between the dust removal action and the internal state of the subsequent dust accumulation area results in the fine dust separated by the subsequent cyclone not being released simultaneously upon opening. Some fine dust adheres to the inner wall of the cone, the surface of the air guide, or the edge of the dust collection channel. Some lightweight lint lies across the narrow dust collection opening and remains inside the machine even after the dust cup is opened. Users often need to shake the vacuum cleaner to dislodge the remaining dust. This process not only leads to insufficient dust removal but also causes the separated fine dust to re-scatter under external disturbance, affecting the cleanliness of dust disposal. The continuous accumulation of residual dust also occupies the subsequent dust collection space, altering the airflow near the subsequent cyclone area and affecting the subsequent separation and settling of dust. Summary of the Invention

[0004] This invention proposes a multi-stage cyclone handheld vacuum cleaner to solve the problem that some lightweight lint gets stuck in the narrow dust inlet and remains inside the machine after the dust cup is opened.

[0005] The technical solution adopted by the present invention to solve its technical problem is: a multi-stage cyclone handheld vacuum cleaner as described in the present invention, comprising: a dust guide assembly, a dust removal assembly, and a dust guide assembly; The guide assembly includes a cup body, a filter element is provided inside the cup body, and a fifth ring body is provided on the outer periphery of the filter element; The dust removal assembly includes a rod and an eighth ring, wherein the fifth ring and the rod form a compression fit, and the rod and the eighth ring form a limiting fit; Let the direction of rotation of the filter element when it is unlocked be the first direction, let the direction of the rod body driven by the fifth ring body be the second direction, and let the direction of rotation of the eighth ring body be the third direction. When the filter element rotates along the first direction, the fifth ring body rotates synchronously. When the fifth ring body rotates along the first direction, it pushes the rod body to move along the second direction. When the rod body moves along the second direction, it drives the eighth ring body to rotate along the third direction, so as to clean the lower inner wall of the cup body.

[0006] Preferably, the guide assembly further includes a first ring body located at the mouth of the cup body, and the guide assembly further includes a first cylinder body located in the middle of the first ring body, with the filter element passing through the first cylinder body.

[0007] With the above solution, when the filter element is in the assembly or insertion state, the inner hole of the first cylinder can guide the filter element axially, so that the filter element always remains coaxial with the first ring body during the insertion process; when the filter element is in the fully installed use state, the first cylinder, together with its outer elastic ring, can form a tight sealing fit with the outer circumference of the filter element. Through the guidance and fit in different states, the accuracy of assembly is ensured and the sealing performance of the internal air passage is improved.

[0008] Preferably, the first ring body is provided with a first groove, the filter element is provided with a locking part that cooperates with the first groove, and a trigger part is provided below the locking part. When the filter element rotates in the first direction, the trigger part pushes the fifth ring body to rotate.

[0009] Using the above scheme, when the filter element is in the forward rotation assembly state, its locking part enters the circumferential locking section of the first groove, so that the filter element is firmly restricted in the axial locking position; when the filter element is in the reverse rotation unlocking state in preparation for dust discharge, the locking part exits the circumferential locking section to release the axial limit, and at the same time, the triggering part below abuts against and pushes the driven part of the fifth ring to rotate. Through the layered arrangement of the locking part and the triggering part, this structure realizes a seamless switch between reliable locking and transmission triggering.

[0010] Preferably, the fifth ring body has a driven part and a protrusion part, the trigger part and the driven part form a pressing fit, the protrusion part and the rod body form a pressing fit, and when the fifth ring body rotates in the first direction, the protrusion part pushes the rod body to move in the second direction.

[0011] Using the above scheme, when the fifth ring body is in a state of rotation caused by the triggering part, the protrusion on its outer periphery moves along the circumference; when the protrusion is in a state of displacement, the driving inclined surface at the bottom of the protrusion slides relative to the smooth surface at the top of the rod and presses downward, forcing the rod to move along the second direction under pressure.

[0012] Preferably, the guide assembly further includes a fourth ring body located on the outer periphery of the first cylinder, and a fifth ring body located on the outer periphery of the fourth ring body. The fourth ring body has a pressure relief port, and the fifth ring body has a shielding part. When the fifth ring body rotates in the first direction, the shielding part deviates from the pressure relief port.

[0013] Using the above scheme, when the fifth ring is in its normal initial position, the shielding part of its inner wall completely covers the outside of the pressure relief port, keeping the internal cyclone zone of the cup isolated and sealed from the dust discharge port. When the fifth ring is moved to the unlocked position, the shielding part deviates and exposes the pressure relief port, instantly creating a pressure relief connection between the inside of the cup and the area near the top dust discharge port. This state switching balances the air pressure inside and outside the cup, reduces airflow disturbances before and after the filter element is lifted, and prevents light, fine dust from being dispersed upwards.

[0014] Preferably, the fifth ring body is provided with a positioning part, and the guide assembly is further provided with a first elastic member that cooperates with the positioning part. The first elastic member and the positioning part form an elastic snap-fit ​​cooperation so that the fifth ring body is kept in the initial position or the unlocked position.

[0015] Using the above scheme, when the fifth ring is in the initial position, the free end of the first elastic element springs and embeds into the initial positioning recess, preventing the mechanism from malfunctioning. When the fifth ring rotates to the unlocked position, the first elastic element slides along the outer circumference and re-embeds into the unlocking positioning recess. This dual-state positioning design ensures that the fifth ring remains firmly in the unlocked position even after the filter element has been completely removed, providing a stable structural foundation for the user to release the filter and invert the cup for dust removal.

[0016] Preferably, the guide assembly further includes a sixth ring body, which is connected to the fifth ring body. The sixth ring body is provided with a first cleaning member. When the fifth ring body rotates in a first direction, the first cleaning member cleans the mouth of the cup body.

[0017] Using the above scheme, when the vacuum cleaner is in a dynamic state of unlocked lid and rotating fifth ring, the connected sixth ring rotates synchronously, driving the first cleaning component to continuously sweep along the lower side of the dust outlet at the top of the cup and the upper opening of the annular dust outlet channel. In the dust discharge preparation state, fine dust and lint that are lying across or attached to the dust outlet can be dispersed and fall into the channel in advance. This design cleverly utilizes the rotational force in the unlocked state to automatically complete the unblocking and cleaning of the inlet without adding independent electric drive components.

[0018] Preferably, the dust removal assembly further includes a plate and a frame. The plate is disposed on the inner wall of the cup, the frame is disposed on one side of the plate, and the rod is slidably disposed on the frame. The dust removal assembly also includes a second elastic element, which is connected to the rod.

[0019] Using the above scheme, the frame guides and limits the rod, forcing the rod to not tilt after being subjected to eccentric load, thus ensuring smooth transmission. The second elastic element continuously applies tension to the rod, and when the filter element is reinstalled and reversed, it can automatically pull the rod back to the initial position to achieve reset. At the same time, the transmission space enclosed by the plate and the frame can separate the rod from the main ash flow area, avoiding dust interference with the transmission.

[0020] Preferably, the lower end of the rod is provided with an insertion part, and the eighth ring is provided with a second groove. The second groove is an inclined groove opened along the outer surface of the eighth ring. The insertion part is inserted into the second groove. When the rod moves in the second direction, the insertion part slides along the second groove to drive the eighth ring to rotate in the third direction.

[0021] Using the above scheme, when the rod is in a downward movement along the second direction, the insertion part at its lower end slides relative to the second groove; under the action of the linear sliding of the insertion part, the eighth ring must rotate around the bottom column along the third direction to avoid it. This structural fit can smoothly convert the vertical thrust into the horizontal rotational force in the narrow dust collection space at the bottom of the cup.

[0022] Preferably, the dust guiding assembly includes a disc body disposed within the cup body, a second cylindrical body passing through the disc body, a cone body disposed below the disc body, a column body disposed at the bottom of the cone body, an eighth ring body disposed on the outer periphery of the column body, and a second cleaning member disposed on the eighth ring body. When the eighth ring body rotates in a third direction, the second cleaning member cleans the outer wall of the cone body.

[0023] Using the above solution, when the cup is not yet inverted and is in the pre-dust removal state of unlocking transmission, the eighth ring drives the second cleaning component to rotate, sweeping across the outer wall of the cone and the inner wall of the cup, loosening and peeling off the compacted dust layer and lint in the dust collection channel due to suction. When the cup is subsequently in the dust removal state after being inverted by the user, because the dust layer has already been loosened, the dust can be smoothly and centrally discharged along the outer wall of the cone by gravity. This solves the problem of fine dust residue sticking to the walls during the natural dust removal state of traditional vacuum cleaners, and avoids the tedious operation of users tapping the machine body.

[0024] The beneficial effects of this invention are as follows: 1. The multi-stage cyclone handheld vacuum cleaner of the present invention, when the filter element rotates along the first direction, drives the fifth ring body to rotate synchronously, the fifth ring body then pushes the rod body to move along the second direction, and the rod body continues to drive the eighth ring body to rotate along the third direction. Before the filter element is lifted off, the fine dust and compacted dust layer accumulated inside the cup body can be moved and loosened, so that the dust originally attached to the inner wall and retained in the lower area can be removed in advance. In this way, when the filter element is removed and the cup body is inverted, the dust can be discharged more smoothly and avoids the problems of fine dust residue, incomplete dust discharge, and the need to shake the machine body to clean the dust when relying on gravity to discharge dust. 2. The multi-stage cyclone handheld vacuum cleaner of the present invention utilizes the unlocking action that the user must perform as the driving force, without the need for an additional independent driving source. Moreover, the eighth ring rotates during the unlocking action, which can continuously apply a dust-cleaning effect to the dust accumulation area, resulting in higher dust accumulation and a more stable dust removal process in the subsequent dust removal process, thereby further reducing dust retention and secondary dispersion. Attached Figure Description

[0025] The invention will now be further described with reference to the accompanying drawings.

[0026] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is an installation diagram of the overall structure of the present invention; Figure 3 This is a schematic diagram of the cup body structure of the present invention; Figure 4 This is a schematic diagram of the first ring structure of the present invention; Figure 5 This is a schematic diagram of the fourth ring structure of the present invention; Figure 6 This is a schematic diagram of the fifth ring structure of the present invention; Figure 7 This is a schematic diagram of the fifth ring body and its surface structure of the present invention; Figure 8 This is a schematic diagram of the filter element structure of the present invention; Figure 9 This is a schematic diagram of the rod structure of the present invention; Figure 10 This is a schematic diagram of the eighth ring structure of the present invention; Figure 11 This is a schematic diagram of the disk structure of the present invention.

[0027] In the diagram: 1. Guide assembly; 11. Connecting part; 12. Cup body; 13. First ring body; 131. Second ring body; 132. First groove body; 14. First cylinder body; 15. Filter element; 151. Locking part; 152. Triggering part; 16. Fourth ring body; 161. First elastic element; 17. Fifth ring body; 171. Driven part; 172. Blocking part; 173. Protrusion; 174. Positioning element. Part; 18, Sixth Ring; 181, First Cleaning Component; 19, Ring; 2, Dust Removal Assembly; 21, Plate; 22, Frame; 23, Rod; 231, Insertion Part; 24, Second Elastic Component; 25, Seventh Ring; 26, Eighth Ring; 261, Second Cleaning Component; 262, Second Groove; 3, Dust Guiding Assembly; 31, Disc; 32, Second Cylinder; 33, Cone; 331, Column. Detailed Implementation

[0028] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0029] like Figure 1 As shown in the figure, this embodiment discloses a multi-stage cyclone handheld vacuum cleaner, including a guide assembly 1, a dust removal assembly 2 and a dust guiding assembly 3.

[0030] Supplementary explanation, combined with Figure 2 The connecting part 11 in the guide assembly 1 is fixedly installed at the front end of the vacuum cleaner body. The connecting part 11 is preferably made of rigid engineering plastic. The cup body 12 is fixedly connected to one end of the connecting part 11. The cup body 12 is preferably made of transparent polycarbonate. The cup body 12 is a cylindrical structure with an open top and a closed bottom. The upper end of the cup body 12 forms a top dust discharge port, and the lower end of the cup body 12 forms a closed cavity bottom. The upper part of the inner wall of the cup body 12 forms an annular mounting area. Figure 1 and Figure 9 One side of the inner wall of the cup body 12 forms an axially extending installation side area. The installation side area is used to install the plate 21, frame 22 and rod 23 in the dust removal assembly 2. After the cup body 12 adopts a transparent structure, the operator can directly observe the dust accumulation status, which makes it easier to judge the dust removal time.

[0031] like Figure 3 As shown, the first ring 13 is fixedly installed at the top opening of the cup body 12. The first ring 13 is preferably made of injection-molded engineering plastic. The first ring 13 is fitted and fixed to the inner circumferential bearing surface of the connecting part 11, as shown. Figure 4As shown, the inner circumference of the first ring body 13 is provided with first grooves 132 distributed circumferentially. Each first groove 132 includes an axial insertion section and a circumferential locking section. The axial insertion section is used to guide the filter element 15 to be inserted axially, and the circumferential locking section is used to restrict the rotation of the filter element 15 after it rotates. The second ring body 131 is fixedly disposed on the lower surface of the first ring body 13. The second ring body 131 is preferably made of wear-resistant engineering plastic. The lower surface of the second ring body 131 forms an annular sliding surface. The second ring body 131 is used to provide a wear-bearing area for the fifth ring body 17. Through the cooperation of the first groove 132 and the second ring body 131, the filter element 15 can be inserted along a defined path and rotated and locked.

[0032] like Figure 4 As shown, the first cylinder 14 is fixedly disposed below the middle of the first ring 13. The first cylinder 14 is preferably made of rigid engineering plastic. The first cylinder 14 is coaxially disposed with the first ring 13. The first cylinder 14 extends downward into the cup body 12. The inner hole of the first cylinder 14 is used to guide the filter element 15 axially. A ring 19 is disposed on the upper part of the outer periphery of the first cylinder 14. The ring 19 is preferably made of elastic rubber. The ring 19 is tightly fitted with the outer periphery of the first cylinder 14. The ring 19 is used to form a sealing fit with the outer periphery of the filter element 15 after the filter element 15 is installed. The first cylinder 14 has a guiding function, which enables the filter element 15 to maintain a coaxial state with the first ring 13 during the insertion process. The ring 19 can improve the sealing performance of the joint after the filter element 15 is assembled.

[0033] like Figure 3 As shown, the filter element 15 is inserted from top to bottom into the first annular body 13 and the first cylindrical body 14, combined with... Figure 8 The filter element 15 preferably uses a stainless steel mesh frame combined with pleated filter material. The outer periphery of the filter element 15 is provided with locking parts 151, which are preferably circumferentially spaced protrusions. Each locking part 151 cooperates with the first groove 132. After the filter element 15 is inserted axially, the locking part 151 enters the axial insertion section of the first groove 132. As the filter element 15 continues to rotate, the locking part 151 enters the circumferential locking section of the first groove 132, at which point the filter element 15 is restricted to the axially locked position. When the filter element 15 rotates in the opposite direction, the locking part 151 exits the circumferential locking section of the first groove 132, and the filter element 15 can be lifted upwards axially. One of the locking parts 151 also has a trigger part 152 at its lower part, which is preferably a lug structure. The trigger part 152 engages with the filter element 15 when it rotates. Figure 7 It can trigger the driven part 171 on the fifth ring body 17. The filter element 15 is arranged in layers with the locking part 151 and the triggering part 152, which can transmit the rotational force to the downstream linkage structure while ensuring the locking function.

[0034] like Figure 5 and Figures 7-8As shown, the fourth ring 16 is fixedly disposed below the first ring 13 and sleeved on the outside of the first cylinder 14. The fourth ring 16 is preferably made of engineering plastic. An annular ash discharge channel is provided between the fourth ring 16 and the inner wall of the cup 12. The annular ash discharge channel is the main ash discharge passage when the cup 12 is inverted for dust discharge. Multiple pressure relief ports are opened on the upper outer periphery of the fourth ring 16. The lower outer periphery of the fourth ring 16 extends downward to form an annular ash-blocking edge. The annular ash-blocking edge and the fourth ring 16 form an upper transmission shielding area. This shielding area is used to reduce dust from entering the rotational mating area between the fifth ring 17 and the fourth ring 16. The first elastic element 161 is fixedly disposed on the upper part of the outer periphery of the fourth ring body 16. The first elastic element 161 is preferably made of spring steel sheet. One end of the first elastic element 161 is fixedly connected to the fourth ring body 16, and the other end forms a free end that is radially pressed towards the outer periphery. The first elastic element 161 is used to form an elastic snap-fit ​​with the positioning part 174 on the fifth ring body 17 so that the fifth ring body 17 can be stably stopped between the initial position and the unlocked position. The pressure relief port of the fourth ring body 16 can release the pressure near the mouth of the cup body 12 when the filter element 15 is unlocked. The annular dust-blocking edge can reduce dust from entering the top transmission area.

[0035] like Figure 6 As shown, the outer wall of the fifth ring 17 is rotatably connected to that of the fourth ring 16, and is located below the second ring 131. The fifth ring 17 is preferably made of wear-resistant engineering plastic. The fifth ring 17 has an overall circular structure, and its inner circumferential surface is close to the outer circumferential surface of the fourth ring 16, forming a rotatable fit. Figure 7 The upper end of the fifth ring body 17 forms a driven portion 171, which is preferably an upwardly protruding shoulder structure. One side of the driven portion 171 forms a force-bearing surface. Figure 8 The force-bearing surface faces the rotation path of the trigger part 152 at the bottom of the filter element 15. When the filter element 15 rotates, the trigger part 152 abuts against the force-bearing surface of the drive part 171, thereby pushing the fifth ring body 17 to rotate around the fourth ring body 16.

[0036] like Figure 7As shown, the lower inner wall of the fifth ring 17 is provided with multiple shielding parts 172. The shielding parts 172 are preferably integrally formed with the fifth ring 17. The shielding parts 172 are preferably annular shields. The shielding parts 172 extend towards the pressure relief port of the fourth ring 16. The diameter of the shielding parts 172 is larger than the diameter of a single pressure relief port. In the initial position, the shielding parts 172 cover the outside of the pressure relief port, isolating the pressure relief port of the fourth ring 16 from the dust discharge port at the top of the cup 12. After the fifth ring 17 is rotated to the unlocked position, the shielding parts 172 move away from the pressure relief port, exposing the pressure relief port. This creates a pressure relief connection between the inside of the cup 12 and the area near the top dust discharge port. By balancing the internal air pressure of the cup 12 and the fourth ring 16, the airflow disturbance caused by the difference in internal and external air pressure before and after the filter element 15 is lifted is reduced, thereby reducing the upward dispersion of fine dust inside the cup 12 under air pressure.

[0037] like Figure 7 As shown, a protrusion 173 is integrally formed on the outer circumference of the fifth ring body 17. The protrusion 173 is preferably a block-shaped structure protruding radially outwards. A driving ramp is provided at the bottom of the protrusion 173. The protrusion 173 is located on the outer circumference of the fifth ring body 17 near the plate 21. When the fifth ring body 17 rotates, the protrusion 173 slides along the wall of the guide hole and pushes the top of the rod 23 by the driving ramp, causing the rod 23 to move axially. This converts the circumferential rotation of the fifth ring body 17 into the axial movement of the rod 23. A positioning part 174 is also provided on the outer circumference of the fifth ring body 17. The positioning part 174 is preferably a recessed structure spaced circumferentially. The positioning part 174 includes an initial positioning recess and an unlocking positioning recess. The two positioning parts 174 correspond to the initial position and the unlocking position of the fifth ring body 17, respectively. Figure 6 and Figure 7 As shown, the free end of the first elastic element 161 is pressed against the outer circumferential surface of the fifth ring body 17 and can slide along the outer circumference during the rotation of the fifth ring body 17. When the fifth ring body 17 rotates to the initial position, the first elastic element 161 is embedded in the initial positioning recess. When the fifth ring body 17 rotates to the unlocked position, the first elastic element 161 is embedded in the unlocking positioning recess, thereby forming two stable positions for the fifth ring body 17, so that the fifth ring body 17 remains in the unlocked position after the filter element 15 is lifted, which facilitates subsequent inverted dust discharge.

[0038] like Figure 6 and Figure 7As shown, the sixth ring body 18 is fixedly disposed on the lower surface of the fifth ring body 17. The sixth ring body 18 is preferably made of engineering plastic. Multiple first cleaning components 181 are fixed at equal intervals on the inner wall of the sixth ring body 18. The first cleaning components 181 are preferably made of elastic silicone sheets or elastic plastic sheets. The first cleaning components 181 are inclined downward. When the sixth ring body 18 rotates synchronously with the fifth ring body 17, it drives the first cleaning components 181 to sweep along the lower side of the top dust discharge port, dispersing the fine dust and lint attached to the dust discharge port and guiding them to the annular dust discharge channel, thus preventing dust from adhering to the dust discharge port. This completes the opening cleaning action without adding an additional independent driving component.

[0039] like Figure 1 and Figure 9 As shown, the plate 21 in the dust removal assembly 2 is fixedly installed on one side of the inner wall of the cup 12. The plate 21 is preferably made of engineering plastic. The plate 21 extends axially along the cup 12, and the plate 21 and the inner wall of the cup 12 form a narrow transmission space. The frame 22 is fixedly installed on the side of the plate 21 facing the center of the cup 12. The frame 22 is preferably made of engineering plastic. The frame 22 is used to guide and limit the rod 23. The rod 23 is movably installed in the frame 22. The rod 23 is preferably made of stainless steel. The upper end of the rod 23 is provided with a smooth surface. The protrusion 173 on the outer side of the fifth ring 17 abuts against the smooth surface. When the fifth ring 17 rotates, the protrusion 173 squeezes the rod 23, thereby pushing the rod 23 to move. The middle and lower parts of the rod 23 slide in contact with the guide section of the frame 22, forcing the rod 23 to not tilt after being subjected to eccentric load.

[0040] like Figure 9 As shown, the lower end of the rod 23 forms an insertion part 231. The insertion part 231 is preferably a short rod structure formed by bending the lower end of the rod 23 toward the center of the cup 12. The insertion part 231 is located in the clearance area corresponding to the disc 31 and the cone 33 and extends toward the eighth ring 26. The second elastic member 24 is connected between the plate 21 and the rod 23. The second elastic member 24 is preferably a tension spring. The second elastic member 24 continuously applies tension to the rod 23. When the filter element 15 is reinstalled into the cup 12 and drives the fifth ring 17 to rotate in the opposite direction, the second elastic member 24 pulls the rod 23 back to the initial position. The plate 21 and the frame 22 form a side transmission space, which can separate the rod 23 from the main ash flow area.

[0041] like Figure 1 and Figure 11As shown, the disc 31 in the dust guiding assembly 3 is fixedly installed inside the cup 12 and located below the fourth ring 16. The disc 31 is preferably made of engineering plastic and has an overall ring structure. The side wall of the disc 31 is attached and fixed to the inner wall of the cup 12. A clearance opening is opened in the middle of the disc 31. The clearance opening is set around the lower end of the first cylinder 14 so that the lower end of the first cylinder 14 extends toward the clearance opening. A lateral clearance opening is opened at the end of the disc 31 corresponding to the rod 23 so that the rod 23 can continue to extend toward the center of the cup 12. The disc 31 divides the inside of the cup 12 into two parts, namely the transfer area located above it and the dust collection area located below it.

[0042] like Figure 11 As shown, the second cylinder 32 is fixedly mounted on the disc 31. The second cylinder 32 is preferably made of engineering plastic. The second cylinder 32 is a plurality of small conical structures distributed along the circumference. Each second cylinder 32 is arranged away from the side where the plate 21 is located. The lower end of each second cylinder 32 passes through the disc 31 and extends to the bottom of the disc 31. The second cylinder 32 is used to guide the fine ash separated in the later stage to the bottom of the disc 31.

[0043] like Figure 11 As shown, the cone 33 is fixedly installed on the lower surface of the disc 31. The cone 33 is preferably made of engineering plastic. The cone 33 is an annular cone structure that is narrow at the top and wide at the bottom. An annular ash collection channel is formed between the outer wall of the cone 33 and the inner wall of the cup 12. The fine ash discharged from the lower end of the second cylinder 32 falls into the annular ash collection channel. The lower part of the cone 33 is integrally formed with a column 331. The side wall of the column 331 provides a rotation guide surface for the seventh ring 25.

[0044] like Figure 10 and Figure 11 As shown, the eighth ring 26 is rotatably connected to the outer wall of the column 331 via the seventh ring 25. The seventh ring 25 is rotatably disposed on the outside of the column 331. The seventh ring 25 is preferably made of engineering plastic. The seventh ring 25 and the column 331 form a coaxial rotational fit. The seventh ring 25 is an overall ring-shaped support. The seventh ring 25 is used to install the eighth ring 26 and to provide support for the rotation of the eighth ring 26. The outer diameter of the seventh ring 25 is smaller than the inner diameter of the cup 12, and a radial gap is maintained between it and the inner wall of the cup 12.

[0045] like Figure 10As shown, the eighth ring 26 is fixedly disposed on the side of the seventh ring 25 and rotates synchronously with the seventh ring 25. The eighth ring 26 is preferably made of engineering plastic. Multiple second cleaning parts 261 are fixed at equal intervals on the top of the eighth ring 26. The second cleaning parts 261 are preferably made of elastic plastic sheets. The ends of the second cleaning parts 261 are set towards the outer wall of the cone 33. A scraping gap is maintained between the second cleaning parts 261 and the outer wall of the cone 33. When the eighth ring 26 rotates, the second cleaning parts 261 sweep across the outer wall of the cone 33 and the inner wall of the cup 12, thereby loosening the tightly packed dust in the cup 12.

[0046] like Figure 1 , Figure 9 and Figure 10 As shown, a second groove 262 is formed on the upper surface of the eighth ring 26 near the outer periphery. The second groove 262 is an inclined groove formed along the outer surface of the eighth ring 26. The second groove 262 extends along both the circumferential and vertical directions of the eighth ring 26. The insertion part 231 extends into the second groove 262 from the outside to the inside. When the rod 23 moves axially, the insertion part 231 slides along the second groove 262, thereby driving the eighth ring 26 and the seventh ring 25 to rotate synchronously around the column 331. This facilitates the transmission of action within a limited space. Through the cooperation between the insertion part 231 and the second groove 262, the axial movement of the rod 23 can be converted into the circumferential rotation of the eighth ring 26.

[0047] In this embodiment, the assembly relationship is as follows: the connecting part 11 is fixedly connected to the cup body 12; the first ring body 13 is fixed at the top opening of the cup body 12; the second ring body 131 is fixed to the lower surface of the first ring body 13; the first groove 132 is formed on the inner wall of the first ring body 13; the first cylinder body 14 is fixed below the middle part of the first ring body 13; the filter element 15 passes through the first ring body 13 and the first cylinder body 14; the locking part 151 is located at the bottom of the filter element 15 and cooperates with the first groove 132; the triggering part 152 is located below the locking part 151 and is used to trigger the driven part 171; the ring body 19 is fixed to the outer periphery of the first cylinder body 14; the fourth ring body 16 is fixed below the first ring body 13 and located outside the first cylinder body 14; the first elastic element 161 is fixed to the upper part of the outer periphery of the fourth ring body 16 and cooperates with the positioning part 174; the fifth ring body 17 is rotatably sleeved on the outer periphery of the fourth ring body 16; the driven part 171 is located at the upper end of the fifth ring body 17; and the blocking part 172... A protrusion 173 is located on the lower inner periphery of the fifth ring body 17 and extends outward toward the plate body 21. A positioning part 174 is located on the outer periphery of the fifth ring body 17. A sixth ring body 18 is fixed to the lower side of the fifth ring body 17. A first cleaning member 181 is fixed to the inner edge of the sixth ring body 18. The plate body 21 is fixed to the inner wall side of the cup body 12. The frame body 22 is fixed to the inner side of the plate body 21. A rod body 23 is movably inserted into the frame body 22. An insertion part 231 is provided. At the lower end of the rod 23, the second elastic element 24 connects the plate 21 and the rod 23. The disc 31 is fixed in the middle and lower part of the upper section inside the cup 12. The second cylinder 32 and the cone 33 are fixed on the upper and lower sides of the disc 31, respectively. The column 331 is integrally formed from the lower part of the cone 33. The seventh ring 25 is rotatably sleeved on the outside of the column 331. The eighth ring 26 is fixed on the outside of the seventh ring 25. The second cleaning element 261 and the second groove 262 are arranged on the eighth ring 26.

[0048] The working process of this embodiment is as follows: when the vacuum cleaner is in normal vacuuming state, the filter element 15 is inserted into the first ring body 13 and the first cylinder body 14, the locking part 151 on the filter element 15 rotates into the circumferential locking section of the first groove body 132, the ring body 19 fits against the outer periphery of the filter element 15 to form a seal, the fifth ring body 17 is in the initial position, the pressure relief port on the fourth ring body 16 is covered by the shielding part 172 inside the fifth ring body 17, the first elastic member 161 is pressed into the initial positioning part 174 corresponding to the fifth ring body 17, the rod body 23 is in the initial height under the action of the second elastic member 24, and the seventh ring body 25 and the eighth ring body 26 are in the initial angle; When dust removal is required, the operator holds the upper lifting part of the filter element 15 and rotates the filter element 15. The trigger part 152 at the lower part of the filter element 15 abuts against the driven part 171 at the upper end of the fifth ring body 17. The fifth ring body 17 rotates along the outer circumference of the fourth ring body 16. During the rotation of the fifth ring body 17, the free end of the first elastic member 161 slides relative to the outer surface of the fifth ring body 17. When the fifth ring body 17 rotates to the unlocked position, the first elastic member 161 is pressed into the corresponding positioning part 174, thereby keeping the fifth ring body 17 stably in the unlocked position. During the rotation of the fifth ring body 17, the blocking part 172 on its inner circumference gradually deviates from the pressure relief port on the fourth ring body 16, opening the pressure relief port and releasing the pressure near the dust discharge port at the top of the cup body 12. As the fifth ring body 17 continues to rotate, the blocking part 172 on its outer circumference... The protrusion 173 slides along the guide hole at the upper end of the rod 23 and pushes the rod 23 to move downward along the frame 22. The sixth ring 18 rotates synchronously. The first cleaning part 181 on the sixth ring 18 sweeps across the lower side of the top dust discharge port and the upper opening of the annular ash discharge channel. The lint and dust attached to the dust discharge port are dispersed. The insertion part 231 at the lower end of the rod 23 slides along the second groove 262 on the eighth ring 26, so that the eighth ring 26 and the seventh ring 25 rotate around the column 331. The second cleaning part 261 rotates synchronously and loosens the accumulated dust on the outer wall of the cone 33 and the inner wall of the cup 12. After the filter 15 rotates to the unlock position, its locking part 151 exits the circumferential locking section of the first groove 132 and returns to the axial insertion section position. At this time, the filter 15 can be smoothly lifted away from the cup 12 along the axial direction. After the filter element 15 is removed, the operator inverts the cup body 12 as a whole. The dust that was originally accumulated in the annular dust collection channel on the outside of the cone 33 moves towards the top dust discharge port along the outer wall of the cone 33, the guide slope on the lower surface of the fourth ring 16, and the inner wall of the cup body 12 under the action of gravity, and is discharged through the annular dust discharge channel between the fourth ring 16 and the cup body 12. Since the pressure relief, cleaning of the dust discharge port and dust removal at the bottom of the cup body 12 have been completed before inverting, less dust residue can be left. After dust removal is completed, the operator reinserts the filter element 15 into the first ring body 13 and the first cylinder body 14, and rotates the filter element 15 in the opposite direction. The filter element 15 drives the fifth ring body 17 to return to its original position in the opposite direction. The second elastic element 24 pulls the rod body 23 back to its initial position. The seventh ring body 25 and the eighth ring body 26 return to their original positions simultaneously. The first elastic element 161 is pressed back into the initial positioning part 174 of the fifth ring body 17. The locking part 151 on the filter element 15 re-enters the circumferential locking section of the first groove body 132. The vacuum cleaner returns to its working state. This reset process does not require any additional separate operation. It can rely on the reinstallation action of the filter element 15 to complete the reset of each transmission component and ensure consistency in the next dust removal action.

[0049] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-stage cyclone handheld vacuum cleaner, comprising: The dust collection assembly (1), the dust removal assembly (2), and the dust collection assembly (3) are characterized in that: The guide assembly (1) includes a cup body (12), a filter element (15) is provided inside the cup body (12), and a fifth ring body (17) is provided on the outer periphery of the filter element (15). The dust removal assembly (2) includes a rod (23) and an eighth ring (26). The fifth ring (17) forms a compression fit with the rod (23), and the rod (23) forms a limiting fit with the eighth ring (26). The lower end of the rod (23) is provided with an insertion part (231), and the eighth ring (26) is provided with a second groove (262). The second groove (262) is an inclined groove opened along the outer surface of the eighth ring (26), and the insertion part (231) is inserted into the second groove (262). Let the direction of rotation of the filter element (15) when it is unlocked be the first direction, let the direction of the rod body (23) driven by the fifth ring body (17) be the second direction, and let the direction of rotation of the eighth ring body (26) be the third direction. When the filter element (15) rotates along the first direction, the fifth ring body (17) rotates synchronously. When the fifth ring body (17) rotates along the first direction, it pushes the rod body (23) to move along the second direction. When the rod body (23) moves along the second direction, the insertion part (231) slides along the second groove (262) to drive the eighth ring body (26) to rotate along the third direction to clean the lower inner wall of the cup body (12).

2. The multi-stage cyclone handheld vacuum cleaner according to claim 1, characterized in that, The guide assembly (1) is further provided with a first ring body (13), the first ring body (13) is located at the mouth of the cup body (12), the guide assembly (1) is further provided with a first cylinder body (14), the first cylinder body (14) is located in the middle of the first ring body (13), and the filter element (15) passes through the first cylinder body (14).

3. A multi-stage cyclone handheld vacuum cleaner according to claim 2, characterized in that, The first ring body (13) is provided with a first groove (132), and the filter element (15) is provided with a locking part (151) that cooperates with the first groove (132). A trigger part (152) is provided below the locking part (151). When the filter element (15) rotates in the first direction, the trigger part (152) pushes the fifth ring body (17) to rotate.

4. A multi-stage cyclone handheld vacuum cleaner according to claim 3, characterized in that, The fifth ring (17) is provided with a driven part (171) and a protrusion (173). The trigger part (152) forms a compression fit with the driven part (171), and the protrusion (173) forms a compression fit with the rod (23). When the fifth ring (17) rotates in the first direction, the protrusion (173) pushes the rod (23) to move in the second direction.

5. A multi-stage cyclone handheld vacuum cleaner according to claim 2, characterized in that, The guide assembly (1) is further provided with a fourth ring body (16), which is located on the outer periphery of the first cylinder (14). The fifth ring body (17) is rotatably connected to the outer wall of the fourth ring body (16). The fourth ring body (16) is provided with a pressure relief port. The fifth ring body (17) is provided with a shielding part (172). When the fifth ring body (17) rotates in the first direction, the shielding part (172) deviates from the pressure relief port.

6. A multi-stage cyclone handheld vacuum cleaner according to claim 1, characterized in that, The fifth ring body (17) is provided with a positioning part (174), and the guide assembly (1) is also provided with a first elastic member (161) that cooperates with the positioning part (174). The first elastic member (161) and the positioning part (174) form an elastic snap-fit ​​cooperation so that the fifth ring body (17) is kept in the initial position or the unlocked position.

7. A multi-stage cyclone handheld vacuum cleaner according to claim 1, characterized in that, The guide assembly (1) is also provided with a sixth ring body (18), which is connected to the fifth ring body (17). The sixth ring body (18) is provided with a first cleaning member (181). When the fifth ring body (17) rotates in the first direction, the first cleaning member (181) cleans the mouth of the cup body (12).

8. A multi-stage cyclone handheld vacuum cleaner according to claim 1, characterized in that, The dust removal assembly (2) is further provided with a plate (21) and a frame (22). The plate (21) is located on the inner wall of the cup (12), and the frame (22) is located on one side of the plate (21). The rod (23) is slidably located on the frame (22). The dust removal assembly (2) is further provided with a second elastic element (24), which is connected to the rod (23).

9. A multi-stage cyclone handheld vacuum cleaner according to claim 1, characterized in that, The dust guiding component (3) includes a disc (31) disposed inside the cup (12). The disc (31) is provided with a second cylinder (32) passing through it. A cone (33) is provided below the disc (31). A column (331) is provided at the bottom of the cone (33). An eighth ring (26) is rotatably connected to the outer wall of the column (331). The eighth ring (26) is provided with a second cleaning component (261). When the eighth ring (26) rotates in a third direction, the second cleaning component (261) cleans the outer wall of the cone (33).

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