CN108209701B - Dust collector and air duct structure thereof - Google Patents

Abstract

The invention discloses an air duct structure which is arranged in a dust collector, wherein the lower part of the dust collector comprises a dust collecting cup, a battery assembly and a motor assembly are accommodated in an upper cover of the upper part, and the dust collecting cup is detachably connected with the upper cover. The wind channel structure includes: an air inlet pipe located at a bottom end of the lower portion; an air inlet located at the upper part of the side wall of the dust cup; the air guide pipe extends upwards from the air inlet pipe to the air inlet along the outer side wall of the dust cup; the filter assembly is detachably and coaxially arranged in the dust cup and is coaxially arranged below the air suction motor; an exhaust duct provided on a side wall of the motor cover and extending upward to a top of the upper cover; and an exhaust hole provided on the upper cover. The invention also discloses a dust collector. The air duct structure has the advantages of reasonable arrangement of all parts and compact structure.

Description

Dust collector and air duct structure thereof

Technical Field

The invention relates to the field of dust collectors, in particular to a dust collector and an air duct structure thereof.

Background

The handheld dust collector has small volume, light weight and convenient use, is convenient for daily cleaning of various spaces and corners, and is more and more favored by users. Especially a wireless handheld dust collector, and can also avoid repeatedly replacing a power supply panel in the dust collection process. However, the structure of existing hand-held cleaners is often relatively diffuse.

Therefore, there is a need for a compact design of a hand-held cleaner, which meets the need of users to further reduce the size of the cleaner.

The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person of ordinary skill in the art.

Disclosure of Invention

The invention aims to provide a dust collector and an air duct structure thereof, so that the problem of structural dispersion of the handheld dust collector is solved.

To achieve one or more of the above objects, according to a first aspect of the present invention, there is provided a duct structure disposed in a vacuum cleaner including an upper part and a lower part, the lower part including a dust cup, the dust cup being a cylindrical cup body having a bottom sealed, the upper part having an upper housing accommodating a battery assembly and a motor assembly, the motor assembly including a suction motor and a motor housing sleeved outside the suction motor, the dust cup being detachably connected to the upper housing. The wind channel structure includes: an air inlet pipe located at a bottom end of the lower portion; the air inlet is positioned at the upper part of the side wall of the dust collecting cup and is communicated with the air inlet pipe; the air guide pipe extends upwards from the air inlet pipe to the air inlet along the outer side wall of the dust cup; the filter assembly is detachably and coaxially arranged in the dust cup and is coaxially arranged below the air suction motor; an exhaust duct provided on a side wall of the motor cover and extending upward to a top of the upper cover; and an exhaust hole provided on the upper cover. The dust-containing gas enters the filter assembly in the dust cup through the air inlet to be filtered through the air inlet pipe and the air guide pipe, the filtered gas enters the motor cover upwards under the suction action of the air suction motor, and the filtered gas enters the upper cover through the exhaust pipe and is exhausted through the exhaust hole.

Further, in the above technical solution, the axis of the air inlet pipe is parallel or coincident with the axis of the dust cup.

Further, in the above technical scheme, the air guide pipe and the exhaust pipe are respectively positioned at two sides of the dust collector.

Further, in the above technical scheme, a partition plate is arranged between the top end of the motor cover and the top end of the upper cover, and an exhaust outlet communicated with the exhaust pipe is arranged on the partition plate.

Further, in the above technical scheme, the baffle is provided with the drainage groove, and the drainage groove enables the gas entering from the exhaust pipe to bypass the center of the baffle for conduction.

Further, in the above technical scheme, the drainage grooves extend from the exhaust outlets to two sides along the circumferential direction respectively.

Further, in the above technical scheme, the exhaust hole on the upper cover corresponds to the position of the drainage groove.

Further, in the technical scheme, the air guide pipe is formed by enclosing the cover plate and the outer wall surface of the dust collecting cup.

Further, in the above technical solution, the cover plate has a cross section in a C-shape, a U-shape and/or a V-shape.

Further, in the above technical scheme, the outer wall surface of the dust cup is provided with a first assembly groove for assembling the cover plate.

Further, in the technical scheme, a sealing ring is arranged between the cover plate and the dust collecting cup.

According to a second aspect of the present invention, there is provided a vacuum cleaner comprising the air duct structure of any one of the above aspects.

Further, in the technical scheme, the outer buckle cover of the air guide pipe is provided with a decorative plate, and the decorative plate is connected with the outer wall surface of the dust collecting cup.

Further, in the above technical scheme, the outer wall surface of the dust cup is provided with a second assembling groove for assembling the decorative plate.

Further, in the above technical scheme, the depth of the second fitting groove is the same as the thickness of the decorative plate.

Further, in the above technical scheme, the bottom of the dust cup is covered with the transition shell, the transition shell is horn-shaped, the wide-mouth end of the transition shell is connected with the bottom of the dust cup, and the air inlet pipe passes through the narrow-mouth end of the transition shell and is communicated with the air guide pipe.

Further, in the above technical scheme, the transition shell is connected with the dust cup to form a smooth curved surface.

Further, in the above technical scheme, the battery assembly is coaxially enclosed outside the side wall of the motor cover.

Compared with the prior art, the invention has the following beneficial effects:

1. through reasonable arrangement of the air inlet pipe, the air guide pipe, the air inlet and the exhaust pipe in the air duct structure and coaxial opposite arrangement of the filtering component and the air suction motor, the air duct structure is more compact, saves space and reduces loss of negative pressure suction.

2. By arranging the partition plate, a heat insulation layer is formed, and damage to the outside of the motor cover and/or the circuit board caused by exhaust gas is avoided; through being equipped with the drainage groove on the baffle, prevent on the one hand that the gas of airing exhaust from appearing the turbulent flow phenomenon, on the other hand can further reduce the thermal damage of the gas of airing exhaust to the part of central point position.

3. Through designs of the decorative plate, the transition shell and the like, the dust collector has streamline appearance and aesthetic feeling while protecting the inner air duct structure.

4. The battery assembly and the motor assembly are arranged in the upper cover, and the battery assembly coaxially surrounds the motor cover, so that space is saved, and noise in use can be reduced.

The foregoing description is only an overview of the present invention, and it is to be understood that it is intended to provide a more clear understanding of the technical means of the present invention and to enable the technical means to be carried out in accordance with the contents of the specification, while at the same time providing a more complete understanding of the above and other objects, features and advantages of the present invention, and one or more preferred embodiments thereof are set forth below, together with the detailed description given below, along with the accompanying drawings.

Drawings

Fig. 1 is an external view schematically showing a cleaner according to an embodiment of the present invention.

Figure 2 is an exploded schematic view of a vacuum cleaner according to an embodiment of the present invention.

Figure 3a is an internal schematic view of a vacuum cleaner according to an embodiment of the present invention.

Figure 3b is an exploded schematic view of the interior of a vacuum cleaner according to an embodiment of the present invention.

Fig. 3c is a schematic view of a separator according to an embodiment of the invention.

Fig. 4 is a schematic view of a cleaner according to an embodiment of the present invention, in which a lower portion of the cleaner is schematically shown in cross-section.

Figure 5 is a schematic cross-sectional view of a lower portion of a vacuum cleaner according to an embodiment of the present invention.

Figure 6a is a schematic perspective view of a dirt cup in accordance with an embodiment of the present invention.

Figure 6b is another schematic perspective view of a dirt cup in accordance with an embodiment of the present invention.

Figure 6c is a schematic perspective view of a dirt cup and air inlet duct in accordance with an embodiment of the present invention.

Figure 6d is an exploded view of a dirt cup and associated components in accordance with an embodiment of the present invention.

Figure 6e is an exploded schematic view of a lower part of a vacuum cleaner according to an embodiment of the present invention.

Fig. 7a is an exploded schematic view of a filter assembly according to an embodiment of the present invention.

Fig. 7b is a schematic cross-sectional view of a filter assembly according to an embodiment of the invention.

FIG. 7c is a schematic view of an exploded assembly of a filter assembly attachment bracket and a dust guide tube according to one embodiment of the invention.

Fig. 7d is a schematic view of the exploded assembly of the connection bracket with the air deflection plate, filter layer of the filter assembly according to one embodiment of the present invention.

Fig. 7e is a schematic perspective view of a dust tube of a filter assembly according to an embodiment of the invention.

Figure 7f is a schematic perspective view of a dirt cup illustrating the internal structure of the dirt cup in accordance with an embodiment of the present invention.

Fig. 8a is an exploded view of a battery holder according to an embodiment of the present invention.

Fig. 8b is an exploded view of a battery holder and motor cover according to an embodiment of the present invention.

Fig. 8c is a schematic view of an assembly of a battery holder and a motor cover according to an embodiment of the invention.

Fig. 9a is a schematic perspective view of a motor cover according to an embodiment of the invention.

Fig. 9b is a schematic bottom view of a motor cover according to an embodiment of the invention.

Fig. 9c is a schematic cross-sectional view of a motor cover according to another embodiment of the invention.

Fig. 9d is an exploded schematic view of a motor cover according to another embodiment of the present invention.

Fig. 9e is a schematic perspective view of an inner housing of a motor cover according to another embodiment of the present invention.

Figure 10a is a schematic top view of a vacuum cleaner according to an embodiment of the present invention.

Fig. 10b is a schematic partial cross-sectional view of an upper shell according to an embodiment of the present invention.

Fig. 10c is a partially enlarged schematic top view of the upper housing according to an embodiment of the invention.

Fig. 10d is a perspective partially enlarged schematic view of the upper cover according to an embodiment of the present invention.

Fig. 11a is a schematic perspective view of a handle according to an embodiment of the invention.

FIG. 11b is an exploded schematic view of a handle according to an embodiment of the present invention.

Fig. 11c is a perspective view of an upper housing according to an embodiment of the present invention.

Figure 11d is an exploded view of a vacuum cleaner according to an embodiment of the present invention.

Figure 11e is another exploded schematic view of a vacuum cleaner according to an embodiment of the present invention.

The main reference numerals illustrate:

10-lower part, 100-air inlet pipe, 100 a-transition shell, 101-air guide pipe, 101 a-cover plate, 101 b-sealing ring, 101 c-decorative plate, 11-dust cup, 111-air inlet, 112-convex rib, 113-guide part, 114-first assembly groove, 115-second assembly groove, 116-contraction section, 12-filter screen, 13-cyclone cone, 14-filter layer, 15-air guide plate, 16-dust guide pipe, 161-dust guide cone, 17-connecting bracket, 171-upper round frame, 172-lower round frame, 173-upright post, 18-dust guide pipe, 181-dust guide wing, 182-annular enclosing shield, 19-handle,

20-upper part, 210-battery holder, 21-upper holder, 211-top plate, 212-upper side plate, 213-upper partition plate, 22-lower holder, 221-bottom plate, 222-lower side plate, 223-lower partition plate, 23 a-cylindrical pin, 23 b-pin hole, 23 c-buckle, 23 d-buckle, 24-motor cover, 241-main body, 242-arc base, 243-exhaust duct, 244-inner case, 244 a-motor exhaust port, 245-vibration-damping pad, 245 a-vibration-damping pad accommodating chamber, 246-vibration-damping ring, 25-partition plate, 251-drainage groove, 252-exhaust outlet, 26-upper cover, 261-exhaust hole, 261 a-racetrack groove, 262-first mounting groove, 263-second mounting groove,

30-handle, 300-holding space, 31-straight line section, 32-bending section, 33-extending section, 34-anti-slip part, 35-dust cup control key, 35 a-first key slot, 36-on/off key, 37-adjusting key, 38 a-second key slot, 38 b-third key slot, 39-decorative sheet.

Detailed Description

The following detailed description of embodiments of the invention is, therefore, to be taken in conjunction with the accompanying drawings, and it is to be understood that the scope of the invention is not limited to the specific embodiments.

Throughout the specification and claims, unless explicitly stated otherwise, the term "comprise" or variations thereof such as "comprises" or "comprising", etc. will be understood to include the stated element or component without excluding other elements or other components.

Spatially relative terms, such as "below," "beneath," "lower," "above," "upper," and the like, may be used herein for ease of description to describe one element's or feature's relationship to another element's or feature's in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the article in use or operation in addition to the orientation depicted in the figures. For example, if the article in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the elements or features. Thus, the exemplary term "below" may encompass both a direction of below and a direction of above. The article may have other orientations (rotated 90 degrees or other orientations) and the spatially relative descriptors used herein interpreted accordingly.

The terms "first," "second," and the like herein are used for distinguishing between two different elements or regions and are not intended to limit a particular position or relative relationship. In other words, in some embodiments, the terms "first," "second," etc. may also be interchanged with one another.

As shown in fig. 1 to 5, the cleaner according to the embodiment of the present invention has a lower part 10 and an upper part 20, the lower part 10 is detachably and air-tightly connected with the upper part 20, an air inlet duct 100 is provided at the bottom end of the lower part 10, and a handle 30 is provided on the upper part 20. The lower portion 10 houses a filter assembly and the upper portion 20 houses a motor assembly and a battery assembly. The motor assembly comprises a motor cover and an induced draft motor, and the battery assembly comprises a battery and a battery bracket.

In one or more embodiments of the invention, as shown in connection with fig. 6a to 6e, the dust cup 11 of the cleaner is located in the lower part 10 of the cleaner. The dust cup 11 is a cylindrical cup body with a sealed bottom, and an air inlet 111 is formed in the upper portion of the side wall of the dust cup 11. The air inlet 111 is communicated with the air inlet pipe 100 through the air guide pipe 101, and the air guide pipe 101 extends upwards from the air inlet pipe 100 to the air inlet 111 along the outer wall of the dust cup 11. Illustratively, the air inlet duct 100 corresponds generally to the bottom center position of the dirt cup 11. The filter assembly of the cleaner is detachably and coaxially arranged in the dust cup 11, and dust particles separated by the filter assembly fall into the dust cup 11. The upper part 20 of the cleaner has an upper housing 26 and a handle 30, the upper housing 26 being cylindrical in shape with a battery assembly and a motor assembly disposed therein. The bottom end of the upper cover 26 is detachably connected with the upper end of the dust cup 11, and the motor assembly is positioned above the filter assembly. The motor assembly includes a motor housing 24 and an air suction motor (not shown). The dust-containing air is sequentially conducted to the filter assembly through the air inlet pipe 100, the air guide pipe 101 and the air inlet 111 for filtering, and the filtered air is upwards introduced into the motor cover 24 by the filter assembly under the suction force of an air suction motor (not shown in the figure). The motor cover 24 is substantially cylindrical, and the sidewall of the motor cover 24 is provided with an exhaust duct 243 (see fig. 3 b), and the exhaust duct 243 extends upward to the top of the upper cover 26 and is discharged from an exhaust hole 261 provided in the upper cover 26.

Preferably, and without limitation, the air inlet duct 100 is parallel or coincident with the axis of the dirt cup 11. Preferably, but not by way of limitation, the exhaust duct 243 and the air guide duct 101 are located on either side of the cleaner. Preferably, but not limited to, a partition plate 25 is provided between the top end of the motor cover 24 and the top end of the upper cover 26, and an exhaust outlet 252 (refer to fig. 3 c) is provided on the partition plate 25, and the gas exhausted from the exhaust pipe 243 enters a space between the partition plate 25 and the top end of the upper cover 26 through the exhaust outlet 252 and is then exhausted from the exhaust hole 261. So that the gas exhausted from the exhaust duct 243 does not directly contact the motor cover 24 or the circuit board (the circuit board may be disposed between the top end of the motor cover and the partition plate), and a heat insulating layer is formed between the exhausted gas and the circuit board and the suction motor in the motor cover 24. Further preferably, the partition 25 is provided with a drainage groove 251, and the drainage groove 251 can guide the air entering from the air exhaust pipe 243 to two sides, so as to prevent the air from entering the central area of the partition 25, and the area corresponds to the positions of the air suction motor and the circuit board. Therefore, the influence of the exhaust gas with heat on the air suction motor and the circuit board is better avoided. Illustratively, the drainage grooves 251 of the partition 25 extend circumferentially to both sides with the position of the exhaust outlet 252 as a starting point to form two symmetrical arc grooves, which should be understood that the present invention is not limited thereto. Preferably, but not by way of limitation, the exhaust holes 261 of the cleaner are distributed at positions on the upper cover 26 corresponding to the drainage grooves 251 so that the gas guided to the drainage grooves 251 is directly discharged to the outside through the exhaust holes 261. Illustratively, the motor housing 24, the exhaust duct 243, and the partition 25 are integrally formed.

Preferably, but not limitatively, as shown in fig. 6a to 6e, the air guiding duct 101 is formed by enclosing the cover plate 101a with the outer wall surface of the dust cup 11. For example, the cover plate 101a is a C-shaped tube, i.e. the cross section of the cover plate is C-shaped, and an opening of the cover plate 101a is covered on the outer wall surface of the dust cup 11 to form the air guide tube 101. It should be understood that the present invention is not limited thereto, and the cross-sectional shape of the cover plate 101a may be C-shaped, U-shaped, or V-shaped. The respective cross-sectional shapes of the cover plates 101a are not necessarily the same, for example, a first section of the cover plate 101a has a C-shaped cross-section and a second section of the cover plate 101a has a U-shaped cross-section. Preferably, the outer wall surface of the dust cup 11 is provided with a first fitting groove 114 for fitting the cover plate 101a, the shape of the first fitting groove 114 being matched to the opening of the cover plate 101a so that the cover plate 101a can be sealingly fitted on the dust cup 11. Preferably, a sealing ring 101b is also provided between the cover plate 101a and the dirt cup 11. Preferably, the air guide pipe 101 is also covered with a decorative plate 101c, the decorative plate 101c is connected with the outer wall surface of the dust cup 11, and the upper end surface of the decorative plate 101c is level with the upper end surface of the dust cup 11. Preferably, the outer wall surface of the dust cup 11 is provided with a second fitting groove 115 for fitting the decorative plate 101c, and the depth of the second fitting groove 115 is the same as the thickness of the decorative plate 101c, so that the fitting of the decorative plate 101c on the dust cup 11 can be streamlined. The decorative plate 101c can protect the air guide pipe 101 and also can play a decorative role, so that the lower part 10 of the dust collector has streamline aesthetic feeling. Illustratively, the dirt cup 11 is made of a transparent material, and its inner wall surface may also be coated with a wear-resistant coating. Illustratively, the bottom of the dirt cup 11 has a converging section 116, the walls of the converging section 116 being arcuate. The bottom of the dust cup 11 is covered with a transition shell 100a, the transition shell 100a is horn-shaped, and the wide-mouth end of the transition shell is connected with the bottom of the dust cup 11. The air inlet pipe 100 is communicated with the air guide pipe 101 through the narrow opening end of the transition housing 100 a. Preferably, the transition housing 100a forms a smooth curved surface after being connected to the dirt cup 11, and has a streamlined appearance.

Further, as shown in fig. 7a to 7e, in one or more embodiments of the present invention, the filter assembly includes a filter mesh enclosure 12, a cyclone cone 13, a filter layer 14, an air deflector 15, and a dust guide pipe 16. The filter screen 12 has a cylindrical structure, and a plurality of through holes are arranged on the side wall of the filter screen. The filter screen 12 is longitudinally disposed with its axis vertical. The cyclone cone 13 is in an inverted cone shape, an air inlet is arranged on the side wall of the upper part of the cyclone cone, an air outlet is arranged at the upper end of the cyclone cone, a dust exhaust port is arranged at the lower end of the cyclone cone, and the cyclone cone 13 is coaxially arranged in the filter screen 12. The upper end of the cyclone cone 13 is coaxially provided with an air deflector 15, the air deflector 15 is funnel-shaped, the opening of the tubular part of the air deflector 15 extends downwards into the cyclone cone 13, and the upper end of the cyclone cone 13 is abutted against the lower surface of the cone-shaped part of the air deflector 15. The upper end of the air deflector 15 is provided with a filter layer 14. The gas filtered by the cyclone cone 13 is continuously conducted upwards to the filter layer 14 through the air deflector 15 under the suction force of the air suction motor. The filter layer 14 filters the passing gas again, and the separated dust particles fall into the cyclone cone 13 along the wind deflector 15 and fall from the dust discharge port at the lower end of the cyclone cone 13. The filter layer 14 may be, but is not limited to, cotton filter, a mesh filter, and/or a HEPA filter. The dust guide pipe 16 is horn-shaped, the wide-mouth end of the dust guide pipe is upwards connected with the lower end of the filter screen cover 12, the narrow-mouth end of the dust guide pipe 16 is in sealing connection with the bottom surface of the dust cup 11, and a secondary dust collection cavity is formed in the dust guide pipe 16. Preferably, a sealing ring is provided between the dust duct 16 and the dirt cup 11. The components of the filter assembly are coaxially arranged, so that the filter assembly is very compact in structure and small in size, and the loss of negative pressure suction force can be reduced.

Preferably, and not by way of limitation, the dust discharge opening at the lower end of the cyclone cone 13 extends into the wide mouth of the duct 16. A dust guide cone 161 is coaxially arranged in the dust guide pipe 16. The apex of the dust guide cone 161 faces upward so that dust particles falling from the dust discharge port at the lower end of the cyclone cone 13 can uniformly slide down the dust guide cone 161 into the secondary dust collection chamber.

Preferably, and without limitation, in one or more exemplary embodiments of the present invention, the filter assembly further includes a connection bracket 17, the connection bracket 17 having an upper circular frame 171 and a lower circular frame 172, and a plurality of stand columns 173 extending vertically from the upper circular frame 171 to the lower circular frame 172, the plurality of stand columns 173 being circumferentially distributed. The outer diameter of the upper circular frame 171 is greater than the outer diameter of the lower circular frame 172. The outer diameter of the upper circular frame 171 matches the inner diameter of the upper end of the dirt cup 11. The filter screen 12 may be wrapped on the outer side of the upright post 173 of the connection bracket 17, the air deflector 15 is assembled on the upper end of the connection bracket 17, and the cyclone cone 13 is assembled in the connection bracket 17, that is, the upright post 173 surrounds the cyclone cone 13. The lower part of the side wall of the cyclone cone 13 is connected with the lower circular frame 172 in a sealing way. Therefore, the filter screen 12, the air deflector 15, the lower circular frame 172 of the connecting bracket 17 and the side wall of the cyclone cone 13 form a unidirectional airflow channel, namely, the air entering from the filter screen 12 can only enter the cyclone cone 13 through the air inlet of the cyclone cone 13 under the action of suction force. The wide mouth end of the dust guide pipe 16 is fitted to the bottom of the connecting bracket 17. Preferably, but not by way of limitation, the upper circular frame 171 extends inwardly to form a tray that is shaped to match the lower surface of the cone of the deflector 15, with a circular hole in the center of the tray for the tubular portion of the deflector 15 to pass through. Illustratively, the deflector 15 is connected to the upper circular frame 171 by fasteners. Illustratively, the lower portion of the sidewall of the cyclone cone 13 is connected to the lower circular frame 172 by fasteners. Illustratively, the dust guide 16 is connected to the lower circular frame 172 by a snap fit.

Preferably, but not by way of limitation, the filter assembly is provided with a handle 19. The handle 19 may be provided on the deflector 15 or on the upper circular frame 171 of the attachment bracket 17, as shown in fig. 7d, for example. When the filter assembly needs to be cleaned or replaced, a user can pull the filter assembly out of the dust cup 11 through the handle, and the operation is convenient.

Further, in one or more exemplary embodiments of the present invention, the dust duct 16 is provided with a dust shielding duct 18, and the dust shielding duct 18 is horn-shaped and sized to match the dust duct 16. The narrow mouth end of the dust blocking pipe 18 is connected with the bottom of the dust collecting cup 11 in a sealing way. The dust deflector 18 can protect the outer wall of the dust deflector 16 from being scratched by dust particles in the dirt cup 11, thereby reducing wear and prolonging the service life. The dust blocking wings 181 are arranged on the outer side wall of the dust blocking pipe 18, and the dust blocking wings 181 can prevent dust particles in the dust collecting cup 11 from being conducted to the filter screen 12 again along the outer wall surface of the dust blocking pipe 18 along with spiral airflow, so that the separated dust particles are reduced to be filtered again, and the filtering efficiency is improved. In the exemplary embodiment shown in the drawings, the number of the dust flaps 181 is two, and the dust flaps 181 extend radially outward, and the shape of the dust flaps 181 is wider at the top and narrower at the bottom. It should be understood that the number, position and shape of the dust blocking wings 181 are merely exemplary, and those skilled in the art may set the number, position and shape according to actual needs, and the present invention is not limited thereto. The wide mouth end of the dust blocking tube 18 extends downwards to form an annular enclosure 182 which also serves to prevent dust particles in the dirt cup 11 from being conducted upwards to the filter screen 12. It should be appreciated that in one or more embodiments of the present invention, the dust duct 16 and the dust guard 18 may be the same component, i.e., the dust guard wings 181 and the annular enclosure 182 are disposed directly on the dust duct 16, and the dust duct 16 prevents the separated dust particles from rising spirally along its outer wall to the filter screen while guiding the dust.

Preferably, but not by way of limitation, the dust duct 18 is removably coupled to the wide mouth end of the dust duct 16, and by way of example, may be coupled via a snap fit and a snap fit, the invention being not limited thereto.

Preferably, and not by way of limitation, in one or more exemplary embodiments of the present invention, as shown in fig. 7f, the bottom of the dirt cup 11 is provided with one or more ribs 112. The ribs 112 are perpendicular to the bottom surface of the dirt cup 11, and the ribs 112 may be arranged in the radial and/or circumferential direction of the dirt cup 11. In the exemplary embodiment of the present invention, ribs 112 are provided at the bottom of the dirt cup 11 in both radial and circumferential directions, and the present invention is not limited thereto.

Preferably, and not by way of limitation, in one or more exemplary embodiments of the invention, referring to fig. 7f, the bottom of the dirt cup 11 is provided with a guide 113, and the narrow mouth end of the dirt guide tube 16 may follow the guide 113 until it is sealingly connected to the bottom of the dirt cup 11 when the filter assembly is installed. In the exemplary embodiment shown in fig. X, the guide 113 is formed as two semicircular sheets arranged crosswise, which on the one hand serve as guide and on the other hand also serve as dust shield, and in addition such guide 113 also enables a more stable assembly of the filter assembly with the dirt cup 11. It should be understood that the shape of the guiding portion 113 is not limited thereto, and those skilled in the art can design the guiding portion according to practical needs. A sealing ring may be disposed between the dust collecting cup 11 and the narrow opening end of the dust guiding tube 16, and the sealing ring may be disposed at the bottom of the dust collecting cup 11 or may be disposed on the narrow opening end of the dust guiding tube 16, which is not limited to this. In an exemplary embodiment of the invention, the bottom of the dirt cup 11 is provided with a sealing groove to accommodate the narrow mouth end of the dirt guide tube 16. It should be understood that the sealing groove and the sealing ring are both used independently or cooperatively to achieve a better sealing effect, and the invention is not limited thereto.

Further, as shown in fig. 8 a-8 c, in one or more exemplary embodiments of the present invention, a battery assembly of a vacuum cleaner includes a battery (not shown) and a battery holder. The battery holder includes an upper holder 21 and a lower holder 22, and the upper holder 21 and the lower holder 22 are detachably connected to form a plurality of battery receiving chambers. The upper bracket 21 includes a top plate 211, and the top plate 211 has an arc-shaped structure. Two upper side plates 212 extend downward from both sides of the top plate 211, and a plurality of upper partition plates 213 extend downward from the top plate 211, and the upper partition plates 213 are equally spaced between the two upper side plates 212. The opposite surfaces of the two adjacent top separation plates 213 and the opposite surfaces of the top separation plates 213 and the upper side plates 212 are concave cambered surfaces, so that the two top separation plates 213 or a battery accommodating cavity surrounded by the top separation plates 213 and the upper side plates 212 is matched with the cylindrical shape of the battery. The lower bracket 22 includes a bottom plate 221, the bottom plate 221 has an arc-shaped structure, and the shape of the bottom plate 221 corresponds to the shape of the top plate 211. The bottom plate 221 has two sides extending upward with a lower side plate 222, and the position of the lower side plate 222 corresponds to the position of the upper side plate 212. The bottom plate 221 further extends downward with a plurality of bottom separation plates 223, and the bottom separation plates 223 are equally spaced between the two bottom side plates 222. The number of bottom separation plates 223 is the same as the number of top separation plates 213. The opposite surfaces of the two adjacent bottom separation plates 223 and the opposite surfaces of the bottom separation plates 223 and the lower side plates 222 are concave cambered surfaces, so that the two bottom separation plates 223 or a battery containing cavity surrounded by the bottom separation plates 223 and the lower side plates 222 is matched with the cylindrical shape of the battery. Electrode pads are provided on the surfaces of the top plate 211 facing the bottom plate 221. The upper and lower holders 21 and 22 can be connected to each other to form a battery holder, with a plurality of battery receiving chambers formed therebetween. In the exemplary embodiment of the present invention, the two battery holders are symmetrically enclosed at both sides of the motor cover 24, which makes the battery assembly and the motor assembly very compact in structure, saves an internal space, and thus reduces the volume of the cleaner. The battery holder is fixedly connected to the motor cover 24 by a fixing portion, and is illustratively fixedly connected to each other by a plurality of fixing posts, and it should be understood that the present invention is not limited thereto. Preferably, and without limitation, the top plate 211 of the battery support is higher than the upper end of the motor housing 24. The top plate 211 of the battery holder is connected to the separator 25 with a certain gap left therebetween.

Preferably, and without limitation, in one or more exemplary embodiments of the present invention, the upper and lower brackets 21, 22 are interconnected by a connection, which may be a snap and/or pin connection. As shown in fig. 8a, the connecting portion is disposed outside the upper side plate 212 and the lower side plate 222, and the upper side plate 212 and the lower side plate 222 on one side are connected by a cylindrical pin 23a and a pin hole 23b, and the upper side plate 212 and the lower side plate 222 on the other side are connected by a buckle 23c and a buckle 23 d. It should be appreciated that the connection between the upper bracket 21 and the lower bracket 22 may be selected by those skilled in the art according to actual needs.

Further, as shown in fig. 9a, 9b, in one or more exemplary embodiments of the present invention, the body 241 of the motor cover 24 is cylindrical, the upper end of the body 241 is a sealing surface, and the lower end is open for the entry of gas filtered by the filter assembly. The lower end of the main body 241 is outwardly extended with an arc-shaped base 242, and an exhaust duct 243 is provided along the sidewall of the main body 241, the exhaust duct 243 dividing the arc-shaped base 242 into two symmetrical parts from the middle. One end of the exhaust duct 243 is communicated with the main body 241, and the other end extends upward above the upper end surface of the main body 241, and filtered gas in the main body 241 may enter the exhaust duct 243 to be conducted to the other end. The exhaust pipe enables exhaust gas in the motor cover to be exhausted according to a preset air channel, so that the phenomenon of turbulence in the conduction process is avoided, and the exhaust efficiency is improved. The arcuate base 242 is used to mount a battery assembly. Preferably, but not by way of limitation, the outer edge of the arcuate base 242 extends upwardly with a baffle that defines a battery assembly mounting location with the outer side wall of the body 241 so that the battery assembly can be more accurately assembled while providing a spacing function.

Preferably, and without limitation, as shown in fig. 9 c-9 e, an inner housing 244 is coaxially sleeved inside the main body 241 of the motor cover 24, the inner housing 244 is substantially cylindrical, has an upper end face sealed, and a lower end sealed and connected to the inner side of the lower end of the main body 241, and the diameter of the inner housing 244 is smaller than the diameter of the main body 241. The bottom opening of the inner casing 244 is used for allowing the gas filtered by the filtering component to enter, the side wall of the inner casing 244 is provided with a plurality of motor air outlets 244a, and the filtered gas in the inner casing 244 can enter the space between the inner casing 244 and the main body 241 through the motor air outlets 244a, and then enter the air exhaust pipe 243 for continuous conduction. An induced draft motor (not shown) is mounted in the inner housing 244. The motor housing of two-layer design can reduce the noise when using. A vibration damping pad 245 is provided between the inner housing 244 and the motor housing 24, for example, the vibration damping pad 245 is provided at the top end of the inner housing 244. Illustratively, the top of the body 241 of the motor cover 24 is also provided with a vibration dampening shoe pocket 245a, and when the inner shell 244 is assembled with the body 241, the vibration dampening shoe 245 is wholly or partially received in the vibration dampening shoe pocket 245 a. In another or more exemplary embodiments, a vibration damping ring 246 is disposed between the inner shell 244 and the body 241, e.g., the vibration damping ring 246 is sleeved between the bottom of the inner shell 244 and the bottom of the body 241, the inner diameter of the vibration damping ring 246 matches the outer diameter of the inner shell 244, and the outer diameter of the vibration damping ring 246 matches the inner diameter of the body 241. The vibration damping ring 246 serves to dampen vibration on the one hand and to seal the space between the inner shell 244 and the body 241 on the other hand. After the filtered gas enters the space between the inner casing 244 and the main body 241 from the inner casing 244 through the motor exhaust port 244a, it can only enter the exhaust duct 243 to continue conduction. It should be appreciated that the provision of vibration damping members between the main body 241 of the motor housing and the inner housing 244 is not limited to the exemplary vibration damping pad 245 and/or vibration damping ring 246, and those skilled in the art can provide such vibration damping members as desired, and the present invention is not limited thereto.

Further, as shown in fig. 10a to 10d, in one or more exemplary embodiments of the present invention, the gas filtered into and discharged from the suction motor enters the discharge duct 243, is conducted upward along the discharge duct 243, and is discharged through the discharge hole 261 of the upper cover 26. The upper housing 26, which is located in the upper part 20 of the cleaner, is generally circular in plan view, and the exhaust duct 243 extends along the inner side wall of the upper housing 26. The handle 30 of the cleaner is arranged on the upper cover 26, and the projection of the handle 30 on the upper cover 26 corresponds to the diameter of the exhaust duct 243. The top end of the upper cover 26 is circumferentially provided with a plurality of racetrack grooves 261a on both sides from the position corresponding to the exhaust duct 243, and the long axis of the racetrack grooves 261a is substantially along the radial direction. The center line of the racetrack groove 261a forms an arc, and the vertex of the arc corresponds to the position of the exhaust duct 243. It should be understood that the arc formed by the central line of the racetrack groove 261a may be a major arc or a minor arc, which is not limited by the present invention. The vent 261 is provided on a side wall surface of the recess. Specifically, in the exemplary embodiment of the present invention, the exhaust hole 261 is formed at a straight side wall of the racetrack groove 261a, which is closer to the exhaust pipe 243. Preferably, the vent 261 extends from the straight section sidewall to the inside curved section. Illustratively, the vent 261 also extends to the bottom surface of the racetrack groove 261 a. In an exemplary embodiment of the present invention, the bottom surface of the racetrack groove 261a is smaller in size than the end surface of the open end, the side wall of the racetrack groove 261a is inclined, and the angle between the bottom surface and the side wall of the racetrack groove 261a is greater than 90 °. By way of example and not limitation, the exhaust outlets 261 have two groups of seven, symmetrically arcuately disposed on either side of the exhaust duct 243. It should be understood that the shape and number of the air outlets are not limited to the present invention, and those skilled in the art can design the air outlets according to actual needs to meet the requirements of smooth air discharge and not easy to blow directly to the hands of the user.

Further, as shown in fig. 11a to 11e, in one or more exemplary embodiments of the present invention, the handle 30 of the cleaner is of a J-shape in which an end of the straight line section 31 of the J-shape handle 30 is connected to the bottom end of the upper cover 26, an end of the curved section 32 of the J-shape handle 30 is connected to the top end of the upper cover 26, and a holding space 300 is left between the straight line section 31 and the side wall of the upper cover 26, and between the curved section 32 and the top end of the upper cover 26 (see fig. 1). The shape and position of the handle 30 is designed to allow a user to hold the cleaner at different angles, for example, the user can hold the curved section 32 and also hold the straight section 31 when needed to cope with different usage situations. The position where the handle 30 is connected to the top end of the upper cover corresponds to the position of the exhaust duct 243. Preferably, the two ends of the handle 30 are connected to the two sides of the upper housing 26, i.e., to the two sides of the upper portion 20, respectively. Preferably, and without limitation, the end of the curved section 32 of the handle 30 increases in width to form an extension 33. The connection between the extension section 33 and the upper cover 26 is smoother, the user's hand is better in use experience, and the appearance is more beautiful, but the invention is not limited thereto.

Preferably, but not by way of limitation, the length of straight segment 31 is 101-109 mm, the outer arc length of curved segment 32 is 205-210 mm, and the inner arc length of curved segment 32 is 120-125 mm. Particularly preferably, the length of straight segment 31 is 106.72mm, the outer arc length of curved segment 32 is 207.47mm, and the inner arc length of curved segment 32 is 122.7mm.

Preferably, but not limitatively, the inner side surface of the handle 30 is provided with an anti-slip portion 34. Specifically, the slip prevention portion 34 is provided on the inner side surface of the curved section 32. Further preferably, the slip prevention portion 34 is also provided on the straight line section 31 and/or the extension section 33. Illustratively, the skid-proof portion 34 is a plurality of skid-proof strips.

Preferably, but not limited to, a first mounting groove 262 for mounting the handle 30 is provided on a sidewall of the bottom end of the upper housing 26, and a second mounting groove 263 for mounting the handle 30 is provided on the top end of the upper housing 26. The handle 30 is connected to the first mounting groove 262 and the second mounting groove 263 by a fastener (not shown), which should be understood that the present invention is not limited thereto.

Preferably, but not exclusively, the outside of the straight section 31 of the handle 30 is provided with a dirt cup control key 35, the dirt cup control key 35 being adapted to control the connection between the dirt cup 11 and the upper part 20 of the cleaner. A first keyway 35a is provided on the outside of the straight section 31 of the handle 30 adjacent the lower part 10 of the cleaner, and a dirt cup control key 35 is provided in the first keyway 35 a. The outside of the straight line section 31 of the handle 30 is provided with a switch 36, and the switch 36 can control the on-off of the dust collector. An adjusting key 37 is arranged on the outer side of the straight line section 31 of the handle 30, and the adjusting key 37 can adjust the suction force of the dust collector. The second key groove 38a is provided on the outer side of the straight line section 31 of the handle 30, the third key groove 38b is provided in the second key groove 38a, and the third key groove 38b is divided into two accommodation spaces for accommodating the on-off key 36 and the adjustment key 37, respectively. The dust cup control key 35, the switch key 36 and/or the adjusting key 37 are arranged on the straight line section 31 of the handle 30, so that the dust collector is convenient for a user to adjust and control, and the dust collector is simple and attractive in appearance.

Preferably, but not by way of limitation, the outer side surface of the handle 30 is provided with a decorative sheet 39, the decorative sheet 39 overlying the outer side surfaces of the straight section 31 and a portion of the curved section 32.

The foregoing descriptions of specific exemplary embodiments of the present invention are presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain the specific principles of the invention and its practical application to thereby enable one skilled in the art to make and utilize the invention in various exemplary embodiments and with various modifications as are suited to the particular use contemplated. Any simple modifications, equivalent variations and modifications of the above-described exemplary embodiments should fall within the scope of the present invention.

Claims (16)

1. An air duct structure arranged in a vacuum cleaner, the vacuum cleaner comprising an upper portion and a lower portion, the lower portion comprising a dust cup, the dust cup being a cylindrical cup having a bottom sealed, the upper portion having an upper housing containing a battery assembly and a motor assembly, the motor assembly comprising an air suction motor and a motor housing sleeved outside the air suction motor, the dust cup being detachably connected to the upper housing, the air duct structure comprising:

an air inlet pipe located at a bottom end of the lower portion;

the air inlet is positioned at the upper part of the side wall of the dust collecting cup and is communicated with the air inlet pipe;

the air guide pipe extends upwards from the air inlet pipe to the air inlet along the outer side wall of the dust cup; the air guide pipe is formed by enclosing a cover plate and the outer wall surface of the dust cup;

a filter assembly detachably coaxially disposed in the dust cup, the filter assembly coaxially disposed below the suction motor;

an exhaust duct provided on a side wall of the motor cover and extending upward to a top of the upper cover; the air guide pipe and the exhaust pipe are respectively positioned at two sides of the dust collector; and

an exhaust hole provided on the upper cover,

the dust-containing gas enters the filter assembly in the dust collecting cup through the air inlet pipe and the air guide pipe, is filtered, the filtered gas upwards enters the motor cover under the suction action of the air suction motor, and then enters the upper cover through the exhaust pipe and is exhausted through the exhaust hole.

2. The air duct structure of claim 1, wherein the axis of the air inlet duct is parallel or coincident with the axis of the dirt cup.

3. The air duct structure according to claim 1, wherein a partition plate is provided between the top end of the motor cover and the top end of the upper cover, the partition plate being provided with an exhaust outlet communicating with the exhaust duct.

4. A duct structure according to claim 3, wherein the partition is provided with a drainage duct which allows gas entering from the exhaust duct to be conducted around the centre of the partition.

5. The duct structure of claim 4, wherein the drainage groove is two arc grooves extending from the exhaust outlet to two sides respectively.

6. The duct structure of claim 4, wherein the vent holes in the upper cover correspond to the position of the drainage grooves.

7. The duct structure of claim 1, wherein the cover plate has a C-, U-and/or V-shaped cross section.

8. The air duct structure according to claim 1, wherein the outer wall surface of the dust cup is provided with a first fitting groove for fitting the cover plate.

9. The air duct structure of claim 1, wherein a sealing ring is provided between the cover plate and the dirt cup.

10. A vacuum cleaner comprising an air duct arrangement according to any preceding claim.

11. The vacuum cleaner of claim 10, wherein the air guide pipe is externally covered with a decorative plate, and the decorative plate is connected with the outer wall surface of the dust cup.

12. The vacuum cleaner of claim 11, wherein an outer wall surface of the dust cup is provided with a second fitting groove for fitting the decorative plate.

13. The vacuum cleaner of claim 12, wherein the second fitting groove has a depth equal to a thickness of the decorative plate.

14. The vacuum cleaner of claim 10, wherein the bottom of the dust cup is covered with a transition shell, the transition shell is horn-shaped, the wide-mouth end of the transition shell is connected with the bottom of the dust cup, and the air inlet pipe is communicated with the air guide pipe through the narrow-mouth end of the transition shell.

15. The vacuum cleaner of claim 14, wherein the transition shell is coupled to the dirt cup to form a smooth curved surface.

16. The vacuum cleaner of claim 10, wherein the battery assembly is coaxially enclosed outside a sidewall of the motor housing.