EP4144270A1

EP4144270A1 - Cleaning head and hand-held vacuum cleaner

Info

Publication number: EP4144270A1
Application number: EP21860541.8A
Authority: EP
Inventors: Yue Jiang; Hangbiao ZHOU
Original assignee: Dreame Innovation Technology Suzhou Co Ltd
Current assignee: Dreame Innovation Technology Suzhou Co Ltd
Priority date: 2020-08-31
Filing date: 2021-08-28
Publication date: 2023-03-08
Also published as: EP4144270A4; JP2023534542A; WO2022042709A1; KR20230075402A

Abstract

A cleaning head (4), comprising: a cleaning head housing (41) in which a suction port (46) is defined, as well as a rotating mechanism (7) that is rotatingly connected to the cleaning head housing (41). The rotating mechanism (7) comprises a first rotating component (71) and a second rotating component (72) that is disposed between the cleaning head housing (41) and the first rotating component (71). The first rotating component (71) comprises a connecting member (711), which has a connecting function, and a rotating shaft (712), which is disposed at the end of the connecting member (711) close to the cleaning head housing (41). An accommodating cavity for accommodating the rotating shaft (712) is defined on inner wall of the second rotating component (72) so that the first rotating component (71) can rotate relative to the second rotating component (72) when the rotating shaft (712) is located in the accommodating cavity. The cleaning head (4) is connected to a suction tube (6) by means of the rotating mechanism (7). The structure of the rotating mechanism (7) is solid and firm and is not easily damaged, thereby prolonging the service life of a hand-held vacuum cleaner (100).

Description

TECHNICAL FIELD

The present invention relates to a cleaning head and a hand-held vacuum cleaner, which belongs to the field of household appliances.

BACKGROUND

With the continuous improvement of people's living standards, vacuum cleaners, as a tool for sanitation and cleaning, have become an indispensable electrical appliance in people's daily life. Among them, the wireless hand-held vacuum cleaners are favored by the public because of their own battery, compact size, portability and convenience, and are more suitable for cleaning smaller spaces. The existing hand-held vacuum cleaners have the following problems:
1. Generally, a similar bolt structure is used to connect a cleaning head to a suction pipe, which is easy to damage and has a short service life;
2. A bristle assembly on a roller is set individually, generally only with soft bristles. It is not efficient at cleaning dust or debris, resulting in a decrease in the cleaning efficiency of the hand-held vacuum cleaner;
3. Layout of a working head used for vacuuming is improper. During the vacuuming process, a front end of the working head is easily lifted, resulting in low vacuuming efficiency;
4. A dust cup and HEPA in a dust-air separation mechanism are usually connected to a main body portion by a mechanical structure, such as a twistable baffle or a buckle structure. When the user needs to take out the dust cup or the HEPA, the above-mentioned mechanical structure needs to be removed first, so that the dust cup or the HEPA can be separated from the main body portion. In addition, the HEPA and the dust cup need to be taken out separately, the take-out steps are cumbersome and the operation is inconvenient;
5. A battery pack that supplies power to the hand-held vacuum cleaner generally cannot be disassembled, or the disassembly of the battery pack is cumbersome and difficult, causing inconvenience to the replacement or charging of the battery pack;
6. When the hand-held vacuum cleaner is not in use, touch switch faces downwardly. When using the hand-held vacuum cleaner, the touch switch is popped up. The touch switch is very sensitive, but it is easy to touch;
7. The separation efficiency of dust and air sucked into the dust-air separation assembly is not high, so that the outflowing air cannot meet the requirements;
8. The screen sleeved on an outer periphery of a cyclone cone used to separate the dust and the air is used for preliminary separation of the dust and the air, but the existing screen is not efficient in separating the dust and the air, so that the outflowing air cannot meet the requirements;
9. When using the hand-held vacuum cleaner, an operator often needs to hold the handle by hand to move and lift the whole machine. Since the hand-held vacuum cleaner integrates a motor, the dust-air separation mechanism and other components in the place where the hand is operated, if the layout of the hand-held vacuum cleaner is improper, the operator will be laborious and inconvenient to operate. At the same time, this will also cause the performance of the vacuum cleaner itself to be affected. Therefore, for hand-held vacuum cleaners, the layout of the whole machine is very important.

SUMMARY

An object of the present invention is to provide a cleaning head which can be firmly connected to a suction pipe, is durable, has high efficiency for cleaning dust, has a reasonable layout and has high dust suction efficiency. In addition, the present invention also provides a hand-held vacuum cleaner which is simple and convenient to operate. At the same time, a dust-air separation mechanism of the hand-held vacuum cleaner is removable, a battery pack of the hand-held vacuum cleaner can be quickly disassembled or assembled, the hand-held vacuum cleaner can be prevented from accidental touch, the separation efficiency of dust and air of the hand-held vacuum cleaner can be improved, and the hand-held vacuum cleaner has a reasonable structure and layout.
To achieve the above object, the present invention provides a following technical solution:
a cleaning head, including:

a cleaning head housing defining a suction port; and
a rotating mechanism rotatably connected with the cleaning head housing, the rotating mechanism including a first rotating assembly and a second rotating assembly which is disposed between the cleaning head housing and the first rotating assembly;
wherein the first rotating assembly includes a connecting member and a rotating shaft, the connecting member has a connecting function, and the rotating shaft is arranged at an end of the connecting member adjacent to the cleaning head housing; an inner wall of the second rotating assembly defines an accommodating cavity configured to accommodate the rotating shaft, so that the first rotating assembly is rotatable relative to the second rotating assembly when the rotating shaft is located in the accommodating cavity.

Further, the second rotating assembly includes a first rotating member and a second rotating member; and wherein the accommodating cavity configured to accommodate the rotating shaft is formed between the first rotating member and the second rotating member.
Further, the second rotating member is disposed inside the first rotating member.
Further, the rotating shaft has a skirt, a sliding groove is formed between the skirt and the connecting member, and the second rotating assembly is rotatably connected with the rotating shaft through the sliding groove.
Further, the first rotating member has a bent end extending into the sliding groove, the bent end is formed by bending from an end of the first rotating member away from the cleaning head housing toward the connecting member, and a first notch which is slidably matched with the skirt is formed between the bent end and the first rotating member.
Further, the second rotating member has a protruding end protruding into the sliding groove, the protruding end is formed by protruding outward from an end of the second rotating member away from the cleaning head housing, a second notch is formed between the protruding end and the connecting member, and the second notch is configured to be slidably fitted with the skirt.
Further, the first rotating member and the second rotating member are fixedly connected to an end of the cleaning head housing, so that the first rotating member and the second rotating member move synchronously.
Further, an end of the second rotating assembly adjacent to the cleaning head housing is rotatably connected to the cleaning head housing.
Further, the second rotating assembly is rotatable about an axis thereof relative to the cleaning head housing.
The present application also provides a hand-held vacuum cleaner, wherein a suction pipe of the hand-held vacuum cleaner is connectable to the cleaning head.
A cleaning head, includes:

a cleaning head housing defining an accommodating space; and
a roller arranged in the accommodating space, a peripheral outer surface of the roller is provided with a bristle mechanism; wherein the bristle mechanism includes:
- a base arranged on the peripheral outer surface of the roller; and
- a first bristle assembly and a second bristle assembly which are fixed to the base at intervals, a length of the first bristle assembly is greater than a length of the second bristle assembly, and a hardness of the first bristle assembly is greater than a hardness of the second bristle assembly.

Further, a height difference between the first bristle assembly and the second bristle assembly is in a range of 0.1 mm to 1.5 mm.
Further, the height difference between the first bristle assembly and the second bristle assembly is in a range of 0.6 mm to 1 mm.
Further, the first bristle assembly includes a plurality of first bristles, and a diameter of the first bristle is greater than or equal to 0.1 mm and less than or equal to 0.5 mm.
Further, the diameter of the first bristles is greater than or equal to 0.3 mm and less than or equal to 0.4 mm.
Further, the second bristle assembly includes a plurality of second bristles, and a diameter of the second bristle is less than or equal to 0.05 mm.
Further, the first bristle assembly is spirally disposed on the roller.
Further, a width of the first bristle assembly is any value in a range of 4 mm to 10 mm, and a width of the second bristle assembly is any value in a range of 30 mm to 50 mm.
Further, the width of the first bristle assembly is any value in a range of 7 mm to 9 mm, and the width of the second bristle assembly is any value in a range of 38 mm to 42 mm.
The present application also provides a hand-held vacuum cleaner, wherein a suction port of the hand-held vacuum cleaner is detachably connected to the above-mentioned cleaning head.
A cleaning head, includes:

a cleaning head housing defining an accommodating space;
a roller arranged in the accommodating space; and
a rotating mechanism rotatably connected to the cleaning head housing, the rotating mechanism including a rotating shaft; wherein the cleaning head has a wheel set for walking, and a connecting line between at least part of the wheel set and the rotating shaft substantially overlaps a vertical line of the rotating shaft.

Further, the wheel set includes a rear wheel positioned adjacent to the rotating shaft, and a vertical line of the rear wheel substantially overlaps the vertical line of the rotating shaft.
Further, the wheel set includes a front wheel disposed away from the rotating shaft, an included angle between the connecting line between the front wheel and the rotating shaft and the vertical line of the rotating shaft is formed, where the included angle is greater than 20°.
Further, the cleaning head further includes a top assembly disposed on the cleaning head housing; wherein when the cleaning head is in contact with a target for cleaning, a closed cavity is formed between the top assembly and the roller to prevent leakage of airflow.
Further, the top assembly includes first tops distributed and oppositely disposed along a radial direction of the cleaning head housing, and a second top configured to connect the first tops; and wherein an end of the first top away from the second top is inclined upwardly.
Further, a distance between the end of the first top away from the second top and a front end of the cleaning head housing is smaller than a distance between an axis of the roller and the front end of the cleaning head housing.
Further, the cleaning head housing is further provided with comb teeth, and an end of the comb teeth abuts against the roller so as to clean the roller.
Further, the cleaning head housing is provided with a suction port configured to suck in dust air; in a height direction of the cleaning head, the comb teeth are arranged above the suction port.
Further, a peripheral outer surface of the roller is provided with a bristle mechanism, and the bristle mechanism is arranged on the roller in a spiral manner.
The present application also provides a hand-held vacuum cleaner, wherein a suction pipe of the hand-held vacuum cleaner is connectable to the cleaning head.
A hand-held vacuum cleaner, includes:

a main body portion including a suction pipe, a driving mechanism configured to generate an airflow along the suction pipe, and a dust-air separation mechanism communicating with the suction pipe and being configured to separate dirt and dust from the airflow; and
a grip portion connected to the main body portion and configured for gripping;
wherein the dust-air separation mechanism is detachably installed in a receiving space defined by the main body portion, the dust-air separation mechanism includes a cover, a cyclone separation assembly arranged in the cover, a fixing bracket and the air outlet HEPA which are arranged at an opening of the cover; and wherein both the cyclone separation assembly and the air outlet HEPA are installed on the fixing bracket, so that the cyclone separation assembly and the air outlet HEPA are both kept on the fixing bracket after the fixing bracket is separated from the cover.

Further, the cyclone separation assembly is detachably connected to the fixing bracket.
Further, at least part of an outer surface of the fixing bracket forms part of an outer surface of the hand-held vacuum cleaner.
Further, a side of the fixing bracket away from the cyclone separation assembly defines an accommodating cavity, and the air outlet HEPA is arranged in the accommodating cavity.
Further, a side of the accommodating cavity away from the cyclone separation assembly has a cavity opening for disassembly and assembly of the air outlet HEPA.
Further, a first sealing member is further disposed between the air outlet HEPA and the driving mechanism to enhance sealing.
Further, the cyclone separation assembly includes a cyclone cone and a screen connected to the cyclone cone; and wherein the screen is sleeved on an outside of the cyclone cone and there is a gap between the screen and the cyclone cone.
Further, the cyclone cone is disposed between the screen and the fixing bracket, and the cyclone cone is detachably mounted to the fixing bracket through the screen.
Further, an end of the screen away from the driving mechanism is sealingly connected to an end of the cyclone cone away from the driving mechanism.
Further, a second sealing member is disposed between an end of the screen adjacent to the driving mechanism and the cover to enhance sealing.
A hand-held vacuum cleaner, includes:

a main body portion including a suction pipe, a driving mechanism configured to generate an airflow along the suction pipe, and a dust-air separation mechanism communicating with the suction pipe and being configured to separate dirt and dust from the airflow;
a grip portion connected to the main body portion and configured for gripping; and
a battery pack detachably connected to the grip portion, wherein the battery pack is provided with a connection terminal electrically connected with the grip portion and a locking mechanism detachably connected with the grip portion, the connection terminal and the locking mechanism are arranged at a same end of the battery pack along a disassembly direction.

Further, the grip portion includes a handle and a support member disposed in front of the handle, the connection terminal and the locking mechanism are arranged on a side of the battery pack away from the handle.
Further, a signal wire electrically connected to a signal light and a power cord electrically connected to the driving mechanism are laid on the grip portion; and wherein part of the signal wire is laid in the support member, and part of the power cord is laid in the handle.
Further, the battery pack includes a bottom wall to support the hand-held vacuum cleaner and a side wall adjacent to the bottom wall, and the locking mechanism includes a release button provided on the side wall.
Further, the battery pack is provided with a cooling channel to cool cells, and an air outlet of the cooling channel is arranged on the side wall.
Further, the air outlet of the cooling channel is arranged at an end away from the connection terminal.
Further, the battery pack is inserted into the grip portion, a sliding groove is provided on one of the battery pack and the grip portion, and a slider matched with the sliding groove is provided on a remaining one of the battery pack and the grip portion.
Further, the connection terminal is located on a side of the sliding groove or the slider adjacent to an edge of the battery pack.
Further, the sliding groove has a notch which faces toward an end where the connection terminal is located.
Further, the battery pack includes a power cord interface, and the power cord interface, the connection terminal and the locking mechanism are arranged at a same end of the battery pack.
A hand-held vacuum cleaner, includes:

a main body portion including a suction pipe, a driving mechanism configured to generate an airflow along the suction pipe, and a dust-air separation mechanism communicating with the suction pipe and being configured to separate dirt and dust from the airflow; and
a grip portion connected to the main body portion and configured for gripping; and
a power supply unit for supplying power to the main body portion;
wherein the grip portion includes a holding shell and a switch movable relative to the holding shell, the switch has a first stroke and a second stroke from an initial position to a final position, both the first stroke and the second stroke have corresponding preset distances, and when the switch is only in the second stroke, the power supply unit supplies power to the driving mechanism.

Further, a ratio between the distance of the first stroke and the distance of the second stroke is any value in a range of 0.5 to 1.5.
Further, the distance of the first stroke and the distance of the second stroke are substantially the same.
Further, the switch is rotatably connected to the holding shell through a rotating shaft; a first switch member and a second switch member are arranged on two sides of the rotating shaft; the first switch member is pressed to drive the second switch member to rotate, so that when the switch is in the second stroke, the power supply unit supplies the power to the driving mechanism.
Further, in a height direction of the grip portion, a deflector for conducting the power supply unit and the main body portion is provided below the second switch member.
Further, a diameter of the second switch member gradually decreases in a direction toward the deflector, and an end of the second switch member adjacent to the deflector has a smooth transition.
Further, the first switch member and the second switch member are integrally formed.
Further, a holding shell is provided with an opening; the first switch member at least partially protrudes out of the opening; the first switch member has a pressing surface; the pressing surface and a plane where the opening is located form an included angle, so that when the switch moves to the end of the second stroke, the pressing surface is substantially parallel to the plane where the opening is located.
Further, the grip portion further includes an elastic member for resetting the switch, and the elastic member is horizontally arranged in the holding shell.
Further, the switch is provided with a first guide post configured to guide a deformation direction of the elastic member, the holding shell is provided with a second guide post configured to guide the deformation direction of the elastic member, and the elastic member is connected with the first guide post and the second guide post.
A hand-held vacuum cleaner, includes:

a main body portion including a suction pipe, a driving mechanism configured to generate an airflow along the suction pipe, and a dust-air separation mechanism communicating with the suction pipe and being configured to separate dirt and dust from the airflow; and
a grip portion connected to the main body portion and configured for gripping;
wherein the dust-air separation mechanism includes a cyclone separation assembly with a cyclone cone, the cyclone cone has a plurality of cones, each of the cones has an inlet for allowing dust to flow into the cone and an outlet for the dust to flow out after the dust is separated, and a length of the outlet is 1.3 to 1.5 times a length of the inlet.

Further, the inlet has first sides arranged oppositely, and second sides arranged oppositely and connected with the first sides, a ratio of a length of the first side to a length of the second side ranges from 1.4 to 1.7.
Further, the length of the cone is 3 to 5 times the length of the inlet.
Further, the length of the cone is 4 times the length of the inlet.
Further, the plurality of cones are distributed in a circular array; a portion of an outer wall of the cone away from a longitudinal axis of the cyclone separation assembly is at a predetermined angle to the longitudinal axis; a portion of the outer wall of the cone adjacent to the longitudinal axis of the cyclone separation assembly is substantially parallel to the longitudinal axis.
Further, the cyclone separation assembly has a central axis, and the cone located on an outer side is inclined toward the central axis.
Further, the cyclone separation assembly further includes a screen connected to the cyclone cone, the screen is sleeved on an outside of the cyclone cone, and there is a gap between the screen and the cyclone cone.
Further, an end of the screen away from the driving mechanism is sealedly connected with an end of the cyclone cone away from the driving mechanism.
Further, an outer shell is provided with an air inlet adjacent to the driving mechanism; the dust-air separation mechanism includes a cover with a through hole, and a dust cup and an air outlet HEPA which are arranged on two sides of the cyclone separation assembly, respectively; the cyclone separation assembly is disposed in the cover and communicates with the air inlet through the through hole.
Further, the air outlet HEPA is arranged on a side of the cyclone separation assembly adjacent to the driving mechanism; the dust-air separation mechanism further includes a fixing bracket connected with the cyclone separation assembly; and the fixing bracket is configured to clamp and fix the air outlet HEPA, and engage with the driving mechanism.
A hand-held vacuum cleaner, includes:

a main body portion including a suction pipe, a driving mechanism configured to generate an airflow along the suction pipe, and a dust-air separation mechanism communicating with the suction pipe and being configured to separate dirt and dust from the airflow; and
a grip portion connected to the main body portion and configured for gripping;
wherein the main body portion is provided with an air inlet adjacent to the driving mechanism; the dust-air separation mechanism includes a screen which is configured to filter dust air, and is arranged adjacent to the air inlet; the screen is provided with a plurality of mesh holes and has a first end disposed away from the air inlet; the first end is provided with a skirt portion extending outwardly away from the screen; a distance between a starting end of the skirt portion and the mesh holes provided adjacent to the first end is a first distance; along an axial direction of the dust-air separation mechanism, a length occupied by the plurality of mesh holes is a second distance, and the first distance is at least one fifth of the second distance.

Further, a distance between the first end and the mesh holes provided adjacent to the first end is greater than or equal to 5 mm.
Further, the screen further has a second end disposed adjacent to the air inlet, a distance between the second end and the mesh holes disposed adjacent to the second end is a third distance, and the third distance is at least one fifth of the second distance.
Further, the distance between the second end and the mesh holes disposed adjacent to the second end is greater than or equal to 5 mm.
Further, the dust-air separation mechanism further includes a deflector connected to the screen, and the deflector is configured to guide the airflow to the screen.
Further, the deflector is disposed at the second end, the deflector has a deflector surface arranged adjacent to the mesh holes.
Further, the guide surface is an inclined surface, and the inclined surface is inclined from top to bottom from a direction adjacent to the second end to a direction away from the second end.
Further, the deflector includes a first deflector and a second deflector connected to the first deflector; the first deflector is arranged along an outer circumferential surface of the screen; and the second deflector extends from the second end to the first end.
Further, along an axial direction of the dust-air separation mechanism, a length of an end of the deflector is substantially the same as a length of the air inlet.
Further, an airflow direction of the suction pipe is substantially parallel to the axial direction of the dust-air separation mechanism.
A hand-held vacuum cleaner, includes:

a main body portion including a suction pipe, a driving mechanism configured to generate an airflow along the suction pipe, and a dust-air separation mechanism communicating with the suction pipe and being configured to separate dirt and dust from the airflow; and
a grip portion connected to the main body portion and configured for gripping;
wherein a rotation axis of the driving mechanism and a longitudinal axis of the dust-air separation mechanism are substantially coincident; and an axis of the grip portion extends through an area between the driving mechanism and the dust-air separation mechanism.

Further, the dust-air separation mechanism includes a cyclone separation assembly, and an air outlet HEPA connected to the cyclone separation assembly and located adjacent to the driving mechanism; and the axis of the grip portion extends through the air outlet HEPA.
Further, an outer shell is provided with an air inlet adjacent to the driving mechanism; the dust-air separation mechanism includes a cover with a through hole; the cover communicates with the air inlet through the through hole; and the cyclone separation assembly is disposed within the cover.
Further, a diameter of the outer shell outside the driving mechanism is smaller than a diameter of the cover.
Further, the air inlet is located above the grip portion.
Further, a working portion is connected with the outer shell through a rod body, and the rod body is communicated with the air inlet.
Further, a first sealing member is further disposed between the air outlet HEPA and the driving mechanism to enhance sealing.
Further, the dust-air separation mechanism further includes a fixing bracket connected with the cyclone separation assembly; and the fixing bracket is configured to clamp and fix the air outlet HEPA, and engage with the driving mechanism.
Further, the hand-held vacuum cleaner further includes a power supply unit configured to supply power to the driving mechanism, and the power supply unit is located at an end of the grip portion away from the driving mechanism.
Further, the dust-air separation mechanism is detachably installed in a receiving space defined by the main body portion.
The beneficial effects of the present application includes the following:

1. The cleaning head shown in the present application is connected with the suction pipe through the rotating mechanism, and the structure of the rotating mechanism is strong and firm, and is not easily damaged, thereby improving the service life of the hand-held vacuum cleaner;
2. The cleaning head shown in the present application is provided with the first bristle assembly and the second bristle assembly, and the hardness of the first bristle assembly is greater than that of the second bristle assembly. As a result, the bristle mechanism can fully clean the target, and drive the airflow in a spiral shape, thereby improving the vacuuming efficiency, which is convenient and fast;
3. In the cleaning head shown in the present application, the connecting line between at least part of the wheel set and the rotating shaft substantially overlaps with the vertical line of the rotating shaft, so the layout is reasonable. Moreover, during the vacuuming process, the cleaning head is always attached to the ground, which improves the vacuuming efficiency;
4. The hand-held vacuum cleaner shown in the present application is provided with the fixing bracket. The fixing bracket is configured to connect the cyclone separation assembly and the air outlet HEPA. The cyclone separation assembly and the air outlet HEPA can be taken out at the same time by directly taking out the fixing bracket, which is convenient and quick;
5. The hand-held vacuum cleaner shown in the present application is provided with the first brush assembly and the second brush assembly. The hardness of the first bristle assembly is greater than that of the second bristle assembly, so that the bristle mechanism can fully clean the target and drive the airflow in a spiral shape, thereby improving the dust collection efficiency, which is convenient and quick;
6. The hand-held vacuum cleaner shown in the present application makes the switch have the first stroke and the second stroke with the preset distance from the actual position to the final position. When the switch is in the second stroke, the power supply unit supplies the power to the driving mechanism. It prevents the hand-held vacuum cleaner from being started by mistake, improves the use experience, and also achieves the effect of improving the cleaning accuracy of the hand-held vacuum cleaner;
7. The hand-held vacuum cleaner shown in the present application is provided with the cyclone cone including the plurality of cones. The outlet length of each cone is 1.3 to 1.5 times the inlet length. The short length of the inlet can make the dust air fully enter into the cone for separation, and the long length of the outlet can increase the path for upward movement of the dust. Finally, the dust will fall down under its own gravity and not flow out of the outlet with the airflow, so as to achieve the purpose of improving the cleaning efficiency;
8. The hand-held vacuum cleaner shown in the present application has the screen for filtering dust. The distance between the end of the screen away from the air inlet and the mesh holes arranged on it is at least one-fifth of the length of the mesh holes along the axial direction of the dust-air separation mechanism. Therefore, it is avoided that the dust air velocity at the end away from the air inlet is too small, which makes it difficult to separate the dust and the air, thereby improving the separation efficiency of the hand-held vacuum cleaner for the dust and the air;
9. The axis of the grip portion of the hand-held vacuum cleaner shown in the present application extends through the area between the driving mechanism and the dust-air separation mechanism, so that the center of gravity of the vacuum cleaner falls on the grip portion. The hand-held vacuum cleaner of the present application has a compact and reasonable structure and is easy to use, thereby reducing the burden on the user and improving the safety and operability of the hand-held vacuum cleaner.

The above description is only an overview of the technical solutions of the present invention. In order to have a clearer understanding of the technical means of the present invention and to implement it according to the contents of the specification, the preferred embodiments of the present invention and the accompanying drawings are described in detail below.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is a schematic structural view of a hand-held vacuum cleaner shown in the present application;
FIG. 2 is an exploded schematic view of a dust-air separation mechanism and a main body portion shown in the present application;
FIG. 3 is a partial cross-sectional schematic view of the hand-held vacuum cleaner shown in the present application;
FIG. 4 is a schematic structural view of the dust-air separation mechanism of the present application;
FIG. 5 is a partial schematic view in FIG. 4;
FIG. 6 is a sectional schematic view of FIG. 4;
FIG. 7 is a structural representation of a cyclone cone in FIG. 4;
FIG. 8 is a schematic structural view of a cleaning head of the present application;
FIG. 9 is another schematic view of FIG. 8;
FIG. 10 is a schematic structural view of another cleaning head of the present application;
FIG. 11 is a partial schematic view in FIG. 10;
FIG. 12 is a schematic view of an angular relationship between a wheel set and a rotating shaft of the present application;
FIG. 13 is a schematic view of connection of the cleaning head, the rotating mechanism and a rod body of the present application;
FIG. 14 is a partial schematic view in FIG. 13;
FIG. 15 is a schematic view of a positional structure relationship between a switch and a deflector of the present application;
FIG. 16 is an exploded schematic view of a battery pack and a grip portion in the present application; and
FIG. 17 is a schematic structural view of the battery pack in FIG. 16.

DETAILED DESCRIPTION

The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and embodiments. The following examples are intended to illustrate the present invention, but not to limit the scope of the present invention.
Referring to FIG. 1, a hand-held vacuum cleaner 100 shown in an embodiment of the present invention includes a main body portion 1 for filtering external dust air, a grip portion 2 connected to the main body portion 1 and used for gripping, and a power supply unit 5 which is detachably connected to the grip portion 2 and configured to supply power to the main body portion 1. The power supply unit 5 may include a battery pack 51 for power supply. In this embodiment, in order to improve the overall aesthetics of the hand-held vacuum cleaner 100, the power supply unit 5 and the main body portion 1 are disposed on two sides of the grip portion 2, respectively; and the power supply unit 5 is located below the grip portion 2. Certainly, in other embodiments, the position of the power supply unit 5 can also be other, for example, it is connected to the main body portion 1 and the like. At this time, the power supply unit 5 and the grip portion 2 are respectively located on two sides of the main body portion 1, which is not specifically limited here, and is determined according to the actual situation.
Referring to FIG. 1 to FIG. 3, the main body portion 1 includes an outer shell 11, a driving mechanism 12 disposed in the outer shell 11, and a dust-air separation mechanism 13 driven by a driving mechanism 12 to separate dust and air. A suction pipe 6 is formed in the outer shell 11 to communicate the dust-air separation mechanism 13 and the outside. When the driving mechanism 12 is activated, the dust air enters the dust-air separation mechanism 13 from the outside through the suction pipe 6. Under the action of the dust-air separation mechanism 13, the dust is separated from the air. The power supply unit 5 is electrically connected to the driving mechanism 12 to supply power to the driving mechanism 12. In this embodiment, the driving mechanism 12 is a motor. Certainly, in other embodiments, the driving mechanism 12 may also be other, which is not specifically limited here, and is determined according to the actual situation.
In order to make the structure of the hand-held vacuum cleaner 100 more compact, in this embodiment, the dust-air separation mechanism 13 is transversely arranged on the outer shell 11, and at the same time, the overall aesthetics of the hand-held vacuum cleaner 100 is improved. In addition, in the process of using the hand-held vacuum cleaner 100, the dust-air separation mechanism 13 is changed from a transverse direction to a longitudinal direction, which is more beneficial to the separation of the dust and the air, so as to improve the dust removal efficiency. Certainly, in other embodiments, the dust-air separation mechanism 13 may also be longitudinally disposed on the outer shell 11, which is not specifically limited here, and is determined according to the actual situation.
Referring to FIG. 2 and FIG. 4, the dust-air separation mechanism 13 is detachably installed in a receiving space defined by the main body portion 1. The hand-held vacuum cleaner 100 also includes a locking mechanism 3. The dust-air separation mechanism 13 is detachably connected to the outer shell 11 of the main body portion 1 through the locking mechanism 3, thereby facilitating the cleaning of the dust-air separation mechanism 13. The locking mechanism 3 includes a first holding member 31 disposed on the dust-air separation mechanism 13, and a second holding member 32 disposed on the outer shell 11 and cooperating with the first holding member 31. The first holding member 31 and the second holding member 32 cooperate to lock or release the dust-air separation mechanism 13 and the outer shell 11. One of the first holding member 31 and the second holding member 32 is a groove, and the other of the first holding member 31 and the second holding member 32 is a protrusion which is held in the groove. The locking mechanism 3 also includes a pressing member 33 connected with the protrusion. An external force is applied to the pressing member 33 to drive the protrusion to move relative to the groove, so that the protrusion and the groove are engaged or disengaged. In this embodiment, the first holding member 31 is the protrusion, and the second holding member 32 is the groove. The pressing member 33 is provided on the dust-air separation mechanism 13. The pressing member 33 and the protrusion are integrally formed, and the pressing member 33 and the protrusion move synchronously. When the dust-air separation mechanism 13 is installed to the outer shell 11, the pressing member 33 is located on the outer shell 11 to be exposed, so as to facilitate pressing and disassembly. When the dust-air separation mechanism 13 needs to be disassembled and cleaned, it is only necessary to press the pressing member 33. The pressing member 33 drives the protrusion to disengage from the groove, so that the dust-air separation mechanism 13 is removed from the outer shell 11 of the hand-held vacuum cleaner 100, and the operation is simple. The connection method of the pressing member 33 and the protrusion on the dust-air separation mechanism 13 is in the prior art, such as integral molding, or fixed connection after separate installation, which will not be described here.
One of the dust-air separation mechanism 13 and the outer shell 11 is provided with a first abutting member 34, and a remaining one of the dust-air separation mechanism 13 and the outer shell 11 is provided with a second abutting member 35 which is abutted with the first abutting member 34 to determine an installation position. Through the cooperation of the first abutting member 34 and the second abutting member 35, the dust-air separation mechanism 13 can be quickly positioned when it is installed and connected to the outer shell 11, which is convenient and quick. In this embodiment, the dust-air separation mechanism 13 is provided with the first abutting member 34 which is a slot provided on the dust-air separation mechanism 13. The outer shell 11 is provided with a second abutting member 35 which is a clipping rib for being matched with the slot. When the dust-air separation mechanism 13 is assembled to the outer shell 11, the clipping rib can be inserted into the slot first, so as to achieve precise positioning of the dust-air separation mechanism 13 and the outer shell 11. Then, an external force is applied to the dust-air separation mechanism 13 to move the dust-air separation mechanism 13 toward the outer shell 11, so that the protrusion slides into the groove and engages with the groove, and the assembly of the dust-air separation mechanism 13 is completed.
The main body portion 1 is provided with an air inlet 111 disposed adjacent to the driving mechanism 12. Specifically, the air inlet 111 is provided on the outer shell 11. The air inlet 111 is located above the grip portion 2 and below the dust-air separation mechanism 13. At the same time, in order to allow the dust to flow from the inside of the outer shell 11 to the outside of the outer shell 11 after being filtered, the outer shell 11 is further provided with an air outlet 112 which is communicated with the air inlet 111. Referring to FIG. 1, in this embodiment, the air outlet 112 is disposed on the outer shell 11 which is located outside the driving mechanism 12. Certainly, in other embodiments, the air outlet 112 may also be directly disposed at other positions, which is not specifically limited here, and is determined according to the actual situation.
Referring to FIG. 4 and FIG. 6, the dust-air separation mechanism 13 includes a cover 131 having a through hole 1311, a cyclone separation assembly which is arranged in the cover 131 and communicated with the air inlet 111 through the through hole 1311, a dust cup 134 arranged in the cover 131, and a fixing bracket 137 and the air outlet HEPA 135 which are arranged at an opening (not shown) of the cover 131. The air outlet HEPA 135 is arranged on a side of the cyclone separation assembly adjacent to the driving mechanism 12. The purpose of this arrangement is to prevent the filtered airflow from still having dust, and then to bring the dust into the vicinity of the driving mechanism 12. In addition, this arrangement can prevent the accumulation of dust at the driving mechanism 12 after long-term use, the operation of the driving mechanism 12 is affected, and the service life of the hand-held vacuum cleaner 100 is also shortened.
Referring to FIG. 3, a rotation axis of the driving mechanism 12 and the longitudinal axis of the dust-air separation mechanism 13 are substantially coincident, and the axis of the grip portion 2 extends through the area between the driving mechanism 12 and the dust-air separation mechanism 13. This design facilitates applying force on the grip portion 2 and mastering the balance of the entire hand-held vacuum cleaner 100. The axis of the grip portion 2 extends through the air outlet HEPA 135, thereby making the overall layout of the hand-held vacuum cleaner 100 more reasonable and easier to hold. The battery pack 51 is located at the end of the grip portion 2 away from the driving mechanism 12, thereby lowering the center of gravity of the entire hand-held vacuum cleaner 100 and improving the comfort of the operator.
Referring to FIG. 4, the cover 131 has a hollow cylindrical structure. A side of the cover 131 adjacent to the driving mechanism 13 has an opening. A cover 130 for blocking the cover 131 is also provided on a side of the cover 131 away from the driving mechanism 12. The cover 131 and the cover 130 surround and form a receiving space. An end of the cover 131 adjacent to the driving mechanism 12 is mated with the fixing bracket 137. The fixing bracket 137 is also a hollow cylindrical structure and has the same diameter as the cover 131. At least part of an outer surface of the fixing bracket 137 forms part of an outer surface of the hand-held vacuum cleaner 100. That is, after the cover 131 and the fixing bracket 137 are fixedly connected and installed on the hand-held vacuum cleaner 100, at least part of the surfaces of the cover 131 and the fixing bracket 137 are exposed to the outside. The above-mentioned pressing member 33 and the protrusion are provided on the cover 130. As described above, the space formed between the cover 131 and the cover 130 is configured to store dust. In order to clean the dust in the space, the cover 131 and the cover 130 are detachably connected. The connection between the cover 131 and the cover 130 is the same as that of the locking mechanism 3 described above, and may also be conventional (a cooperation between a button and a pressing hole), which will not be repeated here. Moreover, in this embodiment, in order to make the structure of the hand-held vacuum cleaner 100 more compact, a diameter of the outer shell 11 outside the driving mechanism 12 is smaller than a diameter of the cover 131.
Referring to FIG. 5 and FIG. 6, the cyclone separation assembly is configured to process the dust air entering the cover 131 from the air inlet 111 to realize separation of the dust and the air. The cyclone separation assembly includes a cyclone cone 133 and a screen 132 connected with the cyclone cone 133. The screen 132 is sleeved on an outer side of the cyclone cone 133, and there is a gap between the screen 132 and the cyclone cone 133. The cyclone cone 133 is disposed between the screen 132 and the fixing bracket 137. The cyclone cone 133 is detachably mounted to the fixing bracket 137 through the screen 132. The cyclone cone 133 is disposed adjacent to the air inlet 111. The screen 132 is disposed on a side of the cyclone cone 133 away from the air inlet 111.
The screen 132 has generally a cylindrical structure. The screen 132 is provided with a plurality of mesh holes for airflow. The mesh holes are evenly arranged on the screen 132. And, the screen 132 has a second end disposed adjacent to the air inlet 111 and a first end disposed away from the air inlet 111. The size of the mesh hole is small. When the dust enters the screen 132 through the mesh holes, the dust or debris with a relatively large size in the dust air is blocked, and the dust or debris with a relatively smaller size with respect to the mesh holes enters the screen 132 together with the airflow. Therefore, the screen 132 is used for preliminary separation of the dust and the air.
The first end is provided with a skirt portion 1321 which extends away from the screen 132 and extends outward. Wherein, a distance between a starting end of the skirt portion 1321 and the mesh holes provided adjacent to the first end is a first distance. Along the axial direction of the dust-air separation mechanism 13, a length occupied by the plurality of mesh holes is a second distance. A distance between the second end and the mesh holes disposed adjacent to the second end is a third distance.
When the dust air enters the cover 131 from the air inlet 111, the airflow velocity is high, that is, the airflow velocity at the second end is high and the pressure is low. Relatively speaking, the pressure in the screen 132 is relatively large, and it is difficult for dust or debris to enter the screen 132 under the action of the pressure difference. Therefore, the third distance is at least one-fifth of the second distance. That is, the screen 132 is not provided with mesh holes adjacent to the second end. Specifically, a distance between the second end and the mesh holes provided adjacent to the second end is greater than or equal to 5 mm, thereby improving the separation efficiency of the dust and the air by the screen 132.
At a position where the dust air blows to the first end of the screen 132, the velocity of the airflow decreases. It is also difficult for dust or debris in the dust air to enter the screen 132 due to the decrease of the airflow speed. Therefore, the screen 132 is also not provided with mesh holes adjacent to the first end. The first distance is at least one fifth of the second distance. That is, the screen 132 is also not provided with mesh holes adjacent to the first end. Specifically, a distance between the first end and the mesh holes provided adjacent to the first end is greater than or equal to 5 mm, thereby improving the separation efficiency of the screen 132 for the dust and the air.
Referring to FIG. 5, in order to make the dust air flow from the air inlet 111 flow to the screen 132, the dust-air separation mechanism 13 further includes a deflector 136 connected to the screen 132. The deflector 136 is configured to guide the airflow to the screen 132. The deflector 136 is disposed at the second end of the screen 132, and the deflector 136 is disposed outside the cyclone cone 133, so as to improve the overall compactness of the cyclone separation assembly. The deflector 136 has a deflector surface, and the deflector surface is arranged adjacent to the mesh holes. In this embodiment, the guide surface is an inclined surface. The inclined surface is inclined from top to bottom from a direction adjacent to the second end to a direction away from the second end. In order not only to save space but also to have an obvious flow guiding effect, the deflector 136 includes a first deflector 1361 and a second deflector 1362 connected to the first deflector 1361. The first deflector 1361 is disposed along an outer circumferential surface of the screen 132 and is disposed adjacent to the cyclone cone 133. The second deflector 1362 extends from the second end to the first end and is disposed adjacent to the air inlet 111. Along the axial direction of the dust-air separation mechanism 13, a length of an end of the deflector 136 is substantially the same as a length of the air inlet 111, so that the airflow adjacent to the air inlet 111 can be better directed to the screen 132.
In order to prevent the airflow from flowing out of the screen 132, so that all the dust air enters the cyclone cone 133, thereby improving the dust removal efficiency, an end of the screen 132 away from the driving mechanism 12 is sealedly connected with an end of the cyclone cone 133 away from the driving mechanism 12. The screen 132 is provided with a second sealing member 138 between an end adjacent to the driving mechanism 12 and the cover 131 for enhancing the sealing performance. In this embodiment, the second sealing member 138 is a sealing ring. Optionally, the cyclone cone 133 is detachably connected to the screen 132. For example, the cyclone cone 133 and the screen 132 may be connected by a snap-fit structure or the like. Therefore, the processing technology of the cyclone separation assembly can be simplified, and the disassembly and assembly of the cyclone cone 133 is facilitated. In addition, the cyclone cone 133 can be easily disassembled for replacement, cleaning and other operations, which is beneficial to improve the assembly efficiency of the cyclone separation assembly.
Referring to FIG. 6 and FIG. 7, the cyclone cone 133 is a hollow cone of which an outer radial direction is narrowed in a direction adjacent to the cover 130. The cyclone cone 133 includes a plurality of cones 1331 which are provided adjacent to the driving mechanism 12. The plurality of cones 1331 are distributed in a circular array. A portion of an outer wall of the cone 1331 away from a longitudinal axis of the cyclone separation assembly is at a predetermined angle to the longitudinal axis. A portion of the outer wall of the cone 1331 adjacent to the longitudinal axis of the cyclone separation assembly is substantially parallel to the longitudinal axis. That is, the cones 1331 located on the outer side are inclined. Specifically, the cyclone separation assembly has a central axis. The cones 1331 located on the outer side are inclined toward the central axis. Moreover, each cone 1331 has an inlet 1332 for allowing the dust air to flow into the cone 1331 and an outlet 1333 for the dust air to flow out after the dust is separated. It is worth noting that the inlet 1332 is an inlet for the dust air to enter an interior of the cone 1331, and the outlet 1333 is an outlet for the airflow to flow to the outlet HEPA 135 after the dust is separated in the cone 1331.
The inlet 1332 is disposed adjacent to the air inlet 111 and communicates with the gap between the screen 132 and the cyclone cone 133. The length of the outlet 1333 is 1.3 to 1.5 times the length of the inlet 1332. The cone 1331 having the outlet 1333 and the inlet 1332 within this ratio range has high efficiency for separation of the dust and the air, and has better effect on dust or solid particles in the dust air.
The inlet 1332 has first sides opposite to each other, and second sides opposite to each other and connected to the first sides. Wherein, the first side is a relatively long side, and the second side is a relatively short side. A ratio of the length of the first side to the length of the second side ranges from 1.4 to 1.7. This arrangement is more beneficial to flow the dust air into the cyclone cone 133. In order to make the structure of the cone 1331 more reasonable, the length of the cone 1331 is 3 to 5 times the length of the inlet 1332. Preferably, the length of the cone 1331 is 4 times the length of the inlet 1332.
Referring to FIG. 3 and FIG. 6, the air outlet HEPA 135 is disposed on a side of the cyclone separation assembly adjacent to the driving mechanism 12, so that the airflow from the cyclone separation assembly is filtered again. Optionally, the air outlet HEPA 135 is detachably disposed between the cyclone separation assembly and the driving mechanism 12.
The cyclone separation assembly and the air outlet HEPA 135 are both mounted to the fixing bracket 137, so that the cyclone separation assembly and the air outlet HEPA 135 are both kept and fixed on the fixing bracket 137 after the fixing bracket 137 is separated from the cover 131. This arrangement can achieve the effect of taking out the air outlet HEPA 135 and the cyclone separation assembly at the same time, which is convenient and quick. Wherein, the cyclone separation assembly is detachably connected to the fixing bracket 137. Specifically, an end of the fixing bracket 137 adjacent to the driving mechanism 12 defines an accommodating cavity (not shown) for accommodating the air outlet HEPA 135. A side of the accommodating cavity away from the cyclone separation assembly has a cavity opening (not shown) for the disassembly and assembly of the air outlet HEPA 135. The fixing bracket 137 is mounted to the opening of the cover 131. Wherein, when the user removes the dust-air separation mechanism, since the fixing bracket is installed on the cover 131, the fixing bracket and the air outlet HEPA in the fixing bracket will be taken out at the same time. If the user needs to replace the air outlet HEPA 135, the fixing bracket 137 does not need to be removed from the cover 131, but only needs to be removed from the accommodating cavity for replacement. If the user needs to flush the cyclone separation assembly, the fixing bracket 137 can be directly rotated by a certain angle and pulled out, or directly pulled out. There is no need to dismantle the air outlet HEPA 135 because the air outlet HEPA 135 and the cyclone separation assembly are provided at two ends of the fixing bracket 137, respectively. This arrangement can facilitate the user's operation and increase the sealing performance at the same time.
A first sealing member 139 is further provided between the air outlet HEPA 135 and the driving mechanism 12 to enhance sealing. The purpose of this arrangement is to prevent the airflow with dust from flowing to the driving mechanism 12 from the gap between the air outlet HEPA 135 and the driving mechanism 12, so that dust accumulates at the driving mechanism 12 to affect the operation of the driving mechanism 12. As described above, the first sealing member 139 is a sealing ring to prevent the airflow from flowing out between the air outlet HEPA 135 and the driving mechanism 12. Certainly, in other embodiments, the air outlet HEPA 135 can also be detachably arranged in the driving mechanism 12. The air outlet HEPA 135 can also be other filter structures which further separate the dust impurities in the dust air.
The dust air enters the cover 131 through the air inlet 111, and passes through the screen 132 for primary separation. The dust air enters the gap between the screen 132 and the cyclone cone 133, and then enters the cone 1331 from the inlet 1332 of the cone 1331 for secondary cyclone separation. The separated dust air flows out from the outlet 1333 of the cone 1331 through the air outlet HEPA 135 and enters the driving mechanism 12, and flows from the air outlet 112 to the outside.
The dust cup 134 includes a first dust collector 1341 and a second dust collector 1342. The receiving space formed by the cover 130 and the cover 131 is the first dust collector 1341. The cyclone cone 133 forms the second dust collector 1342 with the cover 130 at an end away from the cone 1331. When the dust air is filtered through the screen 132, a larger volume of dust or debris in the dust air is preliminarily separated. The larger volume of dust or debris falls into the first dust collector 1341. The dust entering the cover 131 through the air inlet 111 is separated by the screen 132 and the dust is dropped and stored in the first dust collector 1341. The dust air enters the cyclone cone 133, and the secondary cyclone separation is performed in the cyclone cone 133. At this time, under the action of centrifugal force, the finer and smaller dust or debris in the dust air can be separated and fall into the second dust collector 1342. As a result, the dust air can be separated multiple times by the cyclone separation assembly, which effectively improves the separation effect. In other embodiments, the cyclone cone 133 may be a multi-stage cyclone structure, but not limited thereto. That is, in the flow direction of the dust air, a cyclone cavity used for cyclone separation includes a plurality of cyclone chambers connected in sequence in multiple stages, thereby improving the dust removal effect.
Referring to FIG. 1 and FIG. 9, the main body portion 1 further includes a cleaning head 4 which is mated with the outer shell 11. The cleaning head 4 can be directly connected to the outer shell 11, or can be connected to the outer shell 11 through other components. In this embodiment, the cleaning head 4 is connected to the outer shell 11 via the suction pipe 6. The suction pipe 6 is hollow. The driving mechanism 12 drives the dust-air separation mechanism 13 to suck and separate the external dust air through the suction pipe 6. The suction pipe 6 is arranged in communication with the air inlet 111. The airflow direction of the suction pipe 6 is substantially parallel to the axial direction of the dust-air separation mechanism 13. The length of the suction pipe 6 is not specifically limited here, and is determined according to actual needs.
Referring to FIG. 8 and FIG. 10, the cleaning head 4 sucks the dust air into the dust-air separation mechanism 13 under the driving of the driving mechanism 12 for separation. The cleaning head 4 includes a cleaning head housing 41 defining an accommodating space, and a cleaning member 42 disposed in the accommodating space of the cleaning head housing 41 and used to clean the target. The cleaning member 42 may be a roller 42. The cleaning head housing 41 defines a suction port 46 for sucking the dust air. The suction port 46 is provided in communication with the suction pipe 6. Specifically, the suction port 46 is disposed adjacent to the cleaning member 42, so that the cleaning member 42 directly brings the dust air to the suction port 46 when cleaning the target. It avoids the running of the dust air, and improves the user's comfort while improving the cleaning efficiency.
Referring to FIG. 10 and FIG. 11, the peripheral outer surface of the roller 42 is provided with a bristle mechanism 43. In order to improve the cleaning efficiency of the cleaning head 4, the bristle mechanism 43 is spirally arranged on the roller 42. The spiral bristle mechanism 43 can generate centrifugal force on the dust, so that the dust can better enter the suction pipe 6 from the suction port 46.
The brush mechanism 43 includes a base (not shown) arranged on the peripheral outer surface of the roller 42, and a first bristle assembly 431 and a second bristle assembly 432 which are fixed to the base at intervals for improving the cleaning efficiency. Specifically, the first bristle assemblies 431 are spirally distributed on the roller 42 to better suck the dust into the suction pipe 6. The first bristle assembly 431 and the second bristle assembly 432 are fixedly arranged on the base by means of bonding, etc., which will not be described in detail here. A length of the first bristle assembly 431 is greater than that of the second bristle assembly 432, and a hardness of the first bristle assembly 431 is greater than that of the second bristle assembly 432, so as to clean different types of dust. In this embodiment, the first bristle assembly 431 is a hard bristle assembly, and the second bristle assembly 432 is a soft bristle assembly. Certainly, in other embodiments, the first bristle assembly 431 can also be a soft bristle assembly, and the second bristle assembly 432 can also be a hard bristle assembly, which is not specifically limited here, and is determined according to actual situation.
A width of the first bristle assembly 431 is any value in a range of 4 mm to 10 mm. A width of the second bristle assembly 432 is any value in a range of 30 mm to 50 mm. Preferably, the width of the first bristle assembly 431 is any value in a range of 7 mm to 9 mm. The width of the second bristle assembly 432 is any value in a range of 38 mm to 42 mm. The specific widths of the first bristle assembly 431 and the second bristle assembly 432 are not specifically limited herein. As mentioned above, in this embodiment, the width of the first bristle assembly 431 is in the range of 4 mm to 10 mm, and the width of the second bristle assembly 432 is in the range of 30 mm to 50 mm.
Meanwhile, there is a height difference between the first brush assembly 431 and the second brush assembly 432, and the height difference is in a range of 0.1 mm to 1.5 mm. Preferably, the height difference is in a range of 0.6 mm to 1 mm. The purpose of setting the height difference is that the first bristle assembly 431 and the second bristle assembly 432 successively clean the same target, which also achieves the effect of improving the cleaning efficiency. The first bristle assembly 431 includes a plurality of first bristles, and the first bristles are hard bristles. A diameter of the first bristles is greater than or equal to 0.1 mm and less than or equal to 0.5 mm. Preferably, the diameter of the first bristle is greater than or equal to 0.3 mm and less than or equal to 0.4 mm. The second bristle assembly 432 includes a plurality of second bristles, and the second bristles are soft bristles. A diameter of the second bristle is less than or equal to 0.05 mm. In order to increase the ability of the brush mechanism 43 to absorb dust or debris, one of the first brush and the second brush has a diameter of less than or equal to 0.05 mm, and a remaining one of the first brush and the second brush has a diameter greater than or equal to 0.1mm and less than or equal to 0.5mm, so as to improve the cleaning efficiency of the hand-held vacuum cleaner 100. Specific materials of the first bristles and the second bristles are not specifically limited here.
The bristle mechanism 43 is detachably connected to the roller 42 to facilitate the replacement of the bristle mechanism 43 and save costs. Specifically, one of the brush mechanism 43 and the roller 42 is provided with a slot (not shown), and the other of the brush mechanism 43 and the roller 42 is provided with a block (not shown) engaged with the slot. As described above, because the bristle mechanism 43 is spirally arranged on the roller 42, the slot or the block are spirally arranged on the roller 42. In this embodiment, the roller 42 is provided with the slot, and the bristle mechanism 43 is provided with the block. Specifically, the block is disposed on the base and is disposed opposite to the first bristle assembly 431 and the second bristle assembly 432. Indeed, in other embodiments, the bristle mechanism 43 and the roller 42 can be fixedly connected. Specifically, the bristle mechanism 43 further includes an adhesive layer, and the bristle mechanism 43 is bonded to the roller 42 through the adhesive layer to achieve a fixed connection, which is not specifically limited here, and depends on the actual situation.
Referring to FIG. 8 and FIG. 9, the cleaning head 4 further includes a top assembly 44 disposed on the cleaning head housing 41. When the cleaning head 4 is in contact with the target for cleaning, a closed cavity is formed between the top assembly 44 and the roller 42 to prevent the leakage of airflow. Specifically, the top assembly 44 includes first tops 441 that are distributed along a radial direction of the cleaning head housing 41 and are oppositely arranged, and a second top 442 for connecting the first tops 441. When the roller 42 is in contact with the ground, the first top 441 and the second top 442 are also just in contact with the ground, thereby forming a closed cavity. A distance between an end of the first top 441 away from the second top 442 and a front end of the cleaning head housing 41 is smaller than a distance between an axis of the roller 42 and the front end of the cleaning head housing 41. Thus, a gap is prevented from being generated between the first top 441 and the roller 42, so as to improve the sealing performance of the closed cavity. An end of the first top 441 away from the second top 442 is also inclined upwardly, so as to avoid interference to the roller 42 during the working process of the roller 42 and reduce the cleaning efficiency.
The cleaning head housing 41 is also provided with comb teeth 45. An end of the comb teeth 45 abuts against the roller 42 so as to clean the roller 42. In a height direction of the cleaning head 4, the comb teeth 45 are arranged above the suction port 46. The purpose of this arrangement is to not affect the entry of the dust air, but also to clean the roller 42.
Referring to FIG. 13 and FIG. 14, the cleaning head 4 further includes a rotating mechanism 7 rotatably connected with the cleaning head housing 41. The cleaning head 4 and the suction pipe 6 are rotatably connected by the rotating mechanism 7. The rotating mechanism 7 includes a first rotating assembly 71 connected to the suction pipe 6, and a second rotating assembly 72 disposed between the cleaning head housing 41 and the first rotating assembly 71. An end of the second rotating assembly 72 adjacent to the cleaning head housing 71 is rotatably connected to the cleaning head housing 41. The first rotating assembly 71 includes a connecting member 711 with a connecting function and a rotating shaft 712 disposed at an end of the connecting member 711 adjacent to the cleaning head housing 41. The inner wall of the second rotating assembly 72 defines an accommodating cavity (not numbered) for accommodating the rotating shaft 712, so that the first rotating assembly 71 can rotate relative to the second rotating assembly 72 when the rotating shaft 712 is located in the accommodating cavity. Specifically, the first rotating assembly 71 and the second rotating assembly 72 rotate along a first direction. The second rotating assembly 72 is rotatable about its own axis relative to the cleaning head housing 41. A direction of the axis of the cleaning head housing 41 is a second direction, and the first direction is perpendicular to the second direction. In this embodiment, the first direction is a direction perpendicular to the axis of the suction pipe 6. The second direction is the axis of the suction pipe 6. Certainly, in other embodiments, the first direction and the second direction may also be other, which are not specifically limited here, and are determined according to the actual situation.
The connecting member 711 is sleeved on the suction pipe 6. The connecting member 711 can be fixedly connected or detachably connected to the suction pipe 6, which is not specifically limited here, and is determined according to the actual situation. In this embodiment, the connecting member 711 is at least partially sleeved on an end of the suction pipe 6. The connecting member 711 and the suction pipe 6 are detachably connected. Specifically, a locking mechanism 3 similar to the above is provided between the connecting member 711 and the suction pipe 6, of which details are not described herein again.
The rotating shaft 712 has a skirt 713. A sliding groove 714 is formed between the skirt 713 and the connecting member 711. In order to enable the first rotating assembly 71 and the second rotating assembly 72 to be firmly connected, the number of the rotating shafts 712 is two. And, the two rotating shafts 712 are oppositely disposed on two sides of the connecting member 711.
The second rotating assembly 72 includes a first rotating member 721 and a second rotating member 724. An accommodating cavity for accommodating the rotating shaft 712 is formed between the first rotating member 721 and the second rotating member 724. The second rotating member 724 is disposed inside the first rotating member 721. The second rotating assembly 72 is rotatably connected with the rotating shaft 712 through the sliding groove 714. Specifically, an end of the first rotating member 721 adjacent to the cleaning head housing 41 is rotatably connected to the cleaning head housing 41; and another end of the first rotating member 721 away from the cleaning head housing 41 is inserted into the sliding groove 714 so as to be rotatably connected to the rotating shaft 712. The first rotating member 721 has a bent end 722 extending into the sliding groove 714. The bent end 722 is formed by bending from an end of the first rotating member 721 away from the cleaning head housing 41 toward the connecting member 711. The bent end 722 is disposed on a side of the rotating shaft 712 away from the cleaning head housing 41. The purpose of this arrangement is to form a gap between the first rotating member 721 and the connecting member 711, thereby facilitating the installation of the second rotating member 724 and improving the connection tightness between the first rotating assembly 71 and the second rotating assembly 72. At the same time, the tightness of the connection between the second rotating assembly 72 and the cleaning head housing 41 is also improved. In addition, a first notch 723 slidably matched with the skirt 713 is formed between the bent end 722 and the first rotating member 721, so that a bidirectional sliding is more flexible and the user experience is improved.
At least part of the second rotating member 724 is disposed within the gap. In this embodiment, an end of the second rotating member 724 is disposed within the gap. An end of the second rotating member 724 adjacent to the cleaning head housing 41 is rotatably connected to the cleaning head housing 41. An end of the second rotating member 724 away from the cleaning head housing 41 is inserted into the sliding groove 714 to be rotatably connected to the rotating shaft 712. The first rotating member 721 is fixedly connected to an end of the second rotating member 724 adjacent to the cleaning head housing 41, so that the first rotating member 721 and the second rotating member 724 move synchronously. The second rotating member 724 has a protruding end 725 extending into the sliding groove 714. The protruding end 725 is formed to protrude outward from an end of the second rotating member 724 away from the cleaning head housing 41. A second notch 726 is formed between the protruding end 725 and the connecting member 711, which is slidably matched with the skirt 713. This also achieves a bidirectional sliding between the second rotating member 724 and the rotating shaft 712, and improves the user experience. Therefore, the rotating shaft 712 rotates in a direction of the axis of the rotating shaft 712 in the first notch 723 and the second notch 726. A direction in which the axis of the axis is located is the first direction. The rotation of the rotating shaft 712 drives the connecting member 711 to rotate, so as to drive the suction pipe 6 to rotate in the first direction.
Referring to FIG. 9 and FIG. 12, the cleaning head 4 also has a wheel set 8 for walking, and the wheel set 8 is rotatably connected with the cleaning head housing 41. In order to prevent the front end of the cleaning head 4 from being lifted during the use of the hand-held vacuum cleaner 100 and thus affecting the cleaning efficiency, the connecting line between at least part of the wheel set 8 and the rotating shaft 712 overlaps with the vertical line of the rotating shaft 712. The wheel set 8 includes a rear wheel 82 disposed adjacent to the rotating shaft 712 and a front wheel 81 disposed away from the rotating shaft 712. In this embodiment, the vertical line of the rear wheel 82 and the vertical line of the rotating shaft 712 substantially overlap (in a direction shown by a straight line a), so as to prevent the front end of the cleaning head 4 from being lifted during the operation of the hand-held vacuum cleaner 100 and affecting the cleaning efficiency. There is an included angle between the connecting line between the front wheel 81 and the rotating shaft 712 and the vertical line of the rotating shaft 712 (in a direction shown by a straight line b). The included angle is greater than 20°, so that the center of gravity of the cleaning head 4 is closer to the front end, and the front end is also prevented from being lifted.
Referring to FIG. 1, FIG. 15 and FIG. 16, the grip portion 2 includes a handle 21 connected to the outer shell 11 and located below the air inlet 111, a support member 20 arranged in front of the handle 21, a switch 25 movable relative to the handle 21, and a deflector 26 disposed in the handle 21 and electrically connected to the battery pack 51 and the main body portion 1. It should be noted that the handle 21 is surrounded by a holding shell. The switch 25 is movable relative to the holding shell. The deflector 26 conducts the power supply unit 5 and the main body portion 1. The deflector 26 is driven to conduct by the switch 25, and therefore, the deflector 26 is disposed adjacent to the switch 25. An external force is applied to the switch 25, so that the switch 25 moves relative to the handle 21 and then abuts against the deflector 26. As a result, the deflector 26 is driven to conduct, and the main body portion 1 is driven to work. In addition, the grip portion 2 is provided with a signal wire (not shown) electrically connected to the signal light 50 and a power cord (not shown) electrically connected to the driving mechanism 12. Part of the signal wire is laid in the support member 20, and part of the power cord is laid in the handle 21. It should be noted that the signal light 50 is configured to display whether the hand-held vacuum cleaner 100 is in a working state.
The grip portion 2 has a hollow structure. Part of the switch 25 and the deflector 26 are arranged within the hollow structure. A control cable (not shown) connecting the battery pack 51 and the switch 25 is accommodated in the grip portion 2. By arranging the battery pack 51 and the switch 25 adjacent to the grip portion 2, wiring is facilitated, and the overall structure of the hand-held vacuum cleaner 100 is compact.
The switch 25 has a first stroke and a second stroke from an initial position to a final position. The first stroke and the second stroke have corresponding preset distances. When the switch 25 is only in the second stroke, the power supply unit 5 supplies power to the driving mechanism 12. A ratio between the distance of the first stroke and the distance of the second stroke is any value in a range of 0.5 to 1.5. The specific distance and the ratio between the first stroke and the second stroke are not specifically limited here, and can be selected according to actual conditions. In one embodiment, the distance of the first stroke and the distance of the second stroke may be substantially the same, so that the hand-held vacuum cleaner 100 can be easily activated.
An opening 211 is formed on the holding shell. The switch 25 includes a first switch member 251 disposed in the opening 211 and at least partially protruding out of the opening 211, and a second switch member 252 connected to the first switch member 251. The deflector 26 is disposed adjacent to the second switch member 252. In this embodiment, the first switch member 251 and the second switch member 252 are integrally formed. The first switch member 251 has a pressing surface 2511. The pressing surface 2511 has an included angle with the plane where the opening 211 is located, so that when the switch 25 moves to the end of the second stroke, the pressing surface 2511 is substantially parallel to the plane where the opening 211 is located. The pressing surface 2511 is pressed until the pressing surface 2511 is flush with the opening 211. The switch 25 abuts against the deflector 26 to make the deflector 26 conduct, that is, the second switch member 252 abuts against the deflector 26, the deflector 26 is closed, and the driving mechanism 12 operates so that the dust-air separation mechanism 13 separates the dust and the air. Specifically, the switch 25 is rotatably connected to the handle 21 through the rotating shaft 27. The first switch member 251 and the second switch member 252 are disposed on two sides of the rotating shaft 27. The purpose of this arrangement is: with the cleaning head 4 as the front, when a force is applied to the first switch member 251 to drive the first switch member 251 to move backwardly, under the action of the rotating shaft 27, the second switch member 252 moves forwardly. As a result, the distance between the second switch member 252 and the deflector 26 is changed, thereby realizing the abutment between the second switch member 252 and the deflector 136. In the height direction of the grip portion 2, the deflector 26 is obliquely disposed in the handle 21 and located below the second switch member 252. The diameter of the second switching member 252 gradually decreases in a direction toward the deflector 26. In addition, an end of the second switch member 252 adjacent to the deflector 26 has a smooth transition, so that the second switch member 252 can smoothly rotate relative to the deflector 26. A conducting plate 261 is provided above the deflector 26. One end of the conducting plate 261 is fixed on the deflector 26, and the other end is disposed above the deflector 26 and is not in contact with the deflector 26. The second switch member 252 is located above the conducting plate 261. The first switch member 251 is pressed to drive the second switch member 252 to rotate, so that when the switch 25 is in the second stroke, the second switch member 252 abuts against the deflector 26. The pressing conduction plate 261 moves downwardly and contacts the deflector 26 , thereby closing the deflector 26, and the power supply unit 5 supplies power to the driving mechanism 12.
In addition, the grip portion 2 further includes an elastic member (not shown) for restoring the switch 25. When the force applied to the first switch member 251 is removed, the elastic member drives the first switch member 251 to reset. The elastic member is horizontally arranged inside the holding shell. The switch 25 is provided with a first guide post (not shown) for guiding a deformation direction of the elastic member. The holding shell includes a second guide post 212 for guiding the deformation direction of the elastic member. The elastic member is connected with the first guide post and the second guide post 212. The first guide post and the second guide post 212 simultaneously restrict the position of the elastic member. In this embodiment, the elastic member is a spring. In other embodiments, the elastic member may also be a structure such as an elastic piece.
Referring to FIG. 3, FIG. 16 and FIG. 17, the battery pack 51 is detachably connected to the grip portion 2. Specifically, the battery pack 51 is provided with a connection terminal 511 which is electrically connected to the grip portion 2 and a locking mechanism 55 which is detachably connected to the grip portion 2. The connection terminal 511 and the locking mechanism 55 are provided at the same end of the battery pack 51 in a detachment direction. Besides, the connection terminal 511 and the locking mechanism 55 are disposed on a side of the battery pack 51 away from the handle 21 and adjacent to the support member 20. The locking mechanism 55 is configured to lock the battery pack 51 and the grip portion 2.
The battery pack 51 is inserted into the grip portion 2. A sliding groove 512 is provided on one of the battery pack 51 and the grip portion 2, and a slider 23 is provided on a remaining one of the battery pack 51 and the grip portion 2. The slider 23 is matched with the sliding groove 512 to realize quick disassembly, which is convenient and quick. After the battery pack 51 is inserted into the grip portion 2, the locking mechanism 55 locks the battery pack 51 and the grip portion 2.
The battery pack 51 includes a bottom wall 517 for supporting the hand-held vacuum cleaner 100 and a side wall 518 adjacent to the bottom wall 517. The locking mechanism 55 includes a release button 551, and a locking member 552 connected to the release button 551 for locking the battery pack 51 and the grip portion 2. The release button 551 is arranged on the side wall 518 for easy operation. Pressure is applied to the release button 551 to drive the locking member 552 so as to move to release and separate the battery pack 51 from the grip portion 2. Certainly, in other embodiments, the connection method between the battery pack 51 and the grip portion 2 can also be a way of buckle or the like, which will not be listed one by one here.
A plug portion 22 is provided on the grip portion 2. The plug portion 22 is electrically connected to the connection terminal 511, so that the battery pack 51 supplies power to the grip portion 2. In order to facilitate the mating of the connection terminal 511 with the plug portion 22, and facilitate the mating of the battery pack 51 with the grip portion 2, the connection terminal 511 and the sliding groove 512 or the slider 23 are located on a side of the battery pack 51 facing the grip portion 2, thereby simplifying the structure of the hand-held vacuum cleaner 100.
In this embodiment, the sliding groove 512 is provided on the battery pack 51, and the slider 23 is provided on the grip portion 2. The sliding groove 512 has a sliding groove opening 5121 with a direction in which the battery pack 51 is inserted into the grip portion 2 as a front. The sliding groove opening 5121 is disposed toward the front. The connection terminal 511 is located on a side of the sliding groove 512 or the slider 23 adjacent to an edge of the battery pack 51.
The slider 23 of the grip portion 2 enters from the sliding groove opening 5121 of the sliding groove 512 on the battery pack 51, and the slider 23 cooperates with the sliding groove 512 to fix the grip portion 2 and the battery pack 51. The slider 23 can be easily slid out of the sliding groove 512 by applying force to disassemble the battery pack 51 from the grip portion 2. The operation is simple and convenient, thereby saving time and effort.
In order to further increase the connection stability between the battery pack 51 and the grip portion 2, the battery pack 51 is provided with a fastener 513. The grip portion 2 is also provided with a first threaded hole 24 that corresponds to the position of the fastener 513 and is threadedly matched with the fastener 513. The battery pack 51 is provided with a second threaded hole 514 threadedly engaged with the fastener 513. The fastener 513 is located in the second threaded hole 514 and is threadedly connected to the first threaded hole 24 so as to fix the battery pack 51 and the grip portion 2. The fastener 513 is a structure such as a screw. When the battery pack 51 is to be removed from the grip portion 2, the fastener 513 may be removed from the battery pack 51 first. When the battery pack 51 is fixed to the grip portion 2, the fastener 513 can be passed through the second threaded hole 514 and the first threaded hole 24 in sequence and fixed together. Certainly, in other embodiments, the fixing manner of the battery pack 51 and the grip portion 2 may also be other manners, such as a buckle or the like.
The battery pack 51 further includes a cell assembly 515 and a battery pack case 516. The cell assembly 515 includes a plurality of cells which are electrically connected to each other. The battery pack case 516 is formed with a closed cavity to accommodate the cell assembly 515. The sliding groove 512 or the slider 23 is provided on an outer side of the battery pack case 516. In this embodiment, the number of battery cells is six. Certainly, in other embodiments, the number of battery cells may also be other, which is determined according to the actual situation, and is not specifically limited here. In addition, a cooling channel (not shown) for cooling the cells is provided in the battery pack 51. An air outlet 56 of the cooling channel is disposed on the side wall 518 and is located at an end away from the connection terminal 511, thereby increasing the service life of the battery cell and the safety performance during use.
Referring to FIG. 1 or FIG. 2, with a direction in which the battery pack 51 is inserted into the grip portion 2 as the front, the battery pack 51 further includes a power cord 52 which is electrically connected to the cell assembly 515. The power cord 52 is provided on a front side of the battery pack 51. The power cord 52 is connected to external commercial power to charge the battery pack 51. Of course, in other embodiments, the battery pack includes a power cord interface 53. The power cord interface 53, the connection terminal 511 and the locking mechanism are arranged at a same end of the battery pack 51. The power cord 52 is detachably connected to the battery pack 51 through the power cord interface 53. When the battery pack 51 needs to be charged, the power cord 52 can be inserted into the power cord interface 53.
The battery pack 51 further includes a circuit assembly 54 disposed in the battery pack case 516 and electrically connected to the cell assembly 515. The circuit assembly 54 is a circuit board. The connection terminal 511 is provided on the circuit board. The circuit board is configured to electrically connect the battery pack 51 and the connection terminal 511.
It should be noted that the battery pack 51 can also be a power cord 52 connected to an external commercial power supply. However, a length of the power cord 52 is limited, so that the hand-held vacuum cleaner 100 will be limited by a distance in use.
The technical features of the above embodiments can be combined arbitrarily. In order to simplify the description, all possible combinations of the technical features in the above embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of the description in this specification.
The above examples only represent several embodiments of the present invention, and the descriptions thereof are more specific and detailed, but should not be construed as a limitation on the patent scope of the present invention. It should be pointed out that for those of ordinary skill in the art, some modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

A cleaning head, comprising:
a cleaning head housing defining a suction port; and

a rotating mechanism rotatably connected with the cleaning head housing, the rotating mechanism comprising a first rotating assembly and a second rotating assembly which is disposed between the cleaning head housing and the first rotating assembly;

wherein the first rotating assembly comprises a connecting member and a rotating shaft, the connecting member has a connecting function, and the rotating shaft is arranged at an end of the connecting member adjacent to the cleaning head housing; an inner wall of the second rotating assembly defines an accommodating cavity configured to accommodate the rotating shaft, so that the first rotating assembly is rotatable relative to the second rotating assembly when the rotating shaft is located in the accommodating cavity.
The cleaning head according to claim 1, wherein the second rotating assembly comprises a first rotating member and a second rotating member; and wherein the accommodating cavity configured to accommodate the rotating shaft is formed between the first rotating member and the second rotating member.
The cleaning head according to claim 2, wherein the second rotating member is disposed inside the first rotating member.
The cleaning head according to claim 2, wherein the rotating shaft has a skirt, a sliding groove is formed between the skirt and the connecting member, and the second rotating assembly is rotatably connected with the rotating shaft through the sliding groove.
The cleaning head according to claim 4, wherein the first rotating member has a bent end extending into the sliding groove, the bent end is formed by bending from an end of the first rotating member away from the cleaning head housing toward the connecting member, and a first notch which is slidably matched with the skirt is formed between the bent end and the first rotating member.
The cleaning head according to claim 5, wherein the second rotating member has a protruding end protruding into the sliding groove, the protruding end is formed by protruding outward from an end of the second rotating member away from the cleaning head housing, a second notch is formed between the protruding end and the connecting member, and the second notch is configured to be slidably fitted with the skirt.
The cleaning head according to claim 2, wherein the first rotating member and the second rotating member are fixedly connected to an end of the cleaning head housing, so that the first rotating member and the second rotating member move synchronously.
The cleaning head according to claim 1, wherein an end of the second rotating assembly adjacent to the cleaning head housing is rotatably connected to the cleaning head housing.
The cleaning head according to claim 8, wherein the second rotating assembly is rotatable about an axis thereof relative to the cleaning head housing.
A hand-held vacuum cleaner, wherein a suction pipe of the hand-held vacuum cleaner is connectable to the cleaning head according to any one of claims 1 to 9.
A cleaning head, comprising:
a cleaning head housing defining an accommodating space; and

a roller arranged in the accommodating space, a peripheral outer surface of the roller is provided with a bristle mechanism; wherein the bristle mechanism comprises:
a base arranged on the peripheral outer surface of the roller; and

a first bristle assembly and a second bristle assembly which are fixed to the base at intervals, a length of the first bristle assembly is greater than a length of the second bristle assembly, and a hardness of the first bristle assembly is greater than a hardness of the second bristle assembly.
The cleaning head according to claim 11, wherein a height difference between the first bristle assembly and the second bristle assembly is in a range of 0.1 mm to 1.5 mm.
The cleaning head according to claim 12, wherein the height difference between the first bristle assembly and the second bristle assembly is in a range of 0.6 mm to 1 mm.
The cleaning head according to claim 11, wherein the first bristle assembly comprises a plurality of first bristles, and a diameter of the first bristle is greater than or equal to 0.1 mm and less than or equal to 0.5 mm.
The cleaning head according to claim 14, wherein the diameter of the first bristles is greater than or equal to 0.3 mm and less than or equal to 0.4 mm.
The cleaning head according to claim 11, wherein the second bristle assembly comprises a plurality of second bristles, and a diameter of the second bristle is less than or equal to 0.05 mm.
The cleaning head according to claim 11, wherein the first bristle assembly is spirally disposed on the roller.
The cleaning head according to claim 11, wherein a width of the first bristle assembly is any value in a range of 4 mm to 10 mm, and a width of the second bristle assembly is any value in a range of 30 mm to 50 mm.
The cleaning head according to claim 18, wherein the width of the first bristle assembly is any value in a range of 7 mm to 9 mm, and the width of the second bristle assembly is any value in a range of 38 mm to 42 mm.
A hand-held vacuum cleaner, wherein a suction port of the hand-held vacuum cleaner is detachably connected to the cleaning head according to any one of claims 11 to 19.
A cleaning head, comprising:
a cleaning head housing defining an accommodating space;

a roller arranged in the accommodating space; and

a rotating mechanism rotatably connected to the cleaning head housing, the rotating mechanism comprising a rotating shaft; wherein the cleaning head has a wheel set for walking, and a connecting line between at least part of the wheel set and the rotating shaft substantially overlaps a vertical line of the rotating shaft.
The cleaning head according to claim 21, wherein the wheel set comprises a rear wheel positioned adjacent to the rotating shaft, and a vertical line of the rear wheel substantially overlaps the vertical line of the rotating shaft.
The cleaning head according to claim 21, wherein the wheel set comprises a front wheel disposed away from the rotating shaft, an included angle between the connecting line between the front wheel and the rotating shaft and the vertical line of the rotating shaft is formed, where the included angle is greater than 20°.
The cleaning head according to claim 21, further comprising a top assembly disposed on the cleaning head housing; wherein when the cleaning head is in contact with a target for cleaning, a closed cavity is formed between the top assembly and the roller to prevent leakage of airflow.
The cleaning head according to claim 24, wherein the top assembly comprises first tops distributed and oppositely disposed along a radial direction of the cleaning head housing, and a second top configured to connect the first tops; and wherein an end of the first top away from the second top is inclined upwardly.
The cleaning head according to claim 25, wherein a distance between the end of the first top away from the second top and a front end of the cleaning head housing is smaller than a distance between an axis of the roller and the front end of the cleaning head housing.
The cleaning head according to claim 24, wherein the cleaning head housing is further provided with comb teeth, and an end of the comb teeth abuts against the roller so as to clean the roller.
The cleaning head according to claim 27, wherein the cleaning head housing is provided with a suction port configured to suck in dust air; in a height direction of the cleaning head, the comb teeth are arranged above the suction port.
The cleaning head according to claim 21, wherein a peripheral outer surface of the roller is provided with a bristle mechanism, and the bristle mechanism is arranged on the roller in a spiral manner.
A hand-held vacuum cleaner, wherein a suction pipe of the hand-held vacuum cleaner is connectable to the cleaning head according to any one of claims 21 to 29.
A hand-held vacuum cleaner, comprising:
a main body portion comprising a suction pipe, a driving mechanism configured to generate an airflow along the suction pipe, and a dust-air separation mechanism communicating with the suction pipe and being configured to separate dirt and dust from the airflow; and

a grip portion connected to the main body portion and configured for gripping;

wherein the dust-air separation mechanism is detachably installed in a receiving space defined by the main body portion, the dust-air separation mechanism comprises a cover, a cyclone separation assembly arranged in the cover, a fixing bracket and the air outlet HEPA which are arranged at an opening of the cover; and wherein both the cyclone separation assembly and the air outlet HEPA are installed on the fixing bracket, so that the cyclone separation assembly and the air outlet HEPA are both kept on the fixing bracket after the fixing bracket is separated from the cover.
The hand-held vacuum cleaner according to claim 31, wherein the cyclone separation assembly is detachably connected to the fixing bracket.
The hand-held vacuum cleaner according to claim 32, wherein at least part of an outer surface of the fixing bracket forms part of an outer surface of the hand-held vacuum cleaner.
The hand-held vacuum cleaner according to claim 31, wherein a side of the fixing bracket away from the cyclone separation assembly defines an accommodating cavity, and the air outlet HEPA is arranged in the accommodating cavity.
The hand-held vacuum cleaner according to claim 34, wherein a side of the accommodating cavity away from the cyclone separation assembly has a cavity opening for disassembly and assembly of the air outlet HEPA.
The hand-held vacuum cleaner according to claim 31, wherein a first sealing member is further disposed between the air outlet HEPA and the driving mechanism to enhance sealing.
The hand-held vacuum cleaner according to claim 31, wherein the cyclone separation assembly comprises a cyclone cone and a screen connected to the cyclone cone; and wherein the screen is sleeved on an outside of the cyclone cone and there is a gap between the screen and the cyclone cone.
The hand-held vacuum cleaner according to claim 37, wherein the cyclone cone is disposed between the screen and the fixing bracket, and the cyclone cone is detachably mounted to the fixing bracket through the screen.
The hand-held vacuum cleaner according to claim 37, wherein an end of the screen away from the driving mechanism is sealingly connected to an end of the cyclone cone away from the driving mechanism.
The hand-held vacuum cleaner according to claim 39, wherein a second sealing member is disposed between an end of the screen adjacent to the driving mechanism and the cover to enhance sealing.
A hand-held vacuum cleaner, comprising:
a main body portion comprising a suction pipe, a driving mechanism configured to generate an airflow along the suction pipe, and a dust-air separation mechanism communicating with the suction pipe and being configured to separate dirt and dust from the airflow;

a grip portion connected to the main body portion and configured for gripping; and

a battery pack detachably connected to the grip portion, wherein the battery pack is provided with a connection terminal electrically connected with the grip portion and a locking mechanism detachably connected with the grip portion, the connection terminal and the locking mechanism are arranged at a same end of the battery pack along a disassembly direction.
The hand-held vacuum cleaner according to claim 41, wherein the grip portion comprises a handle and a support member disposed in front of the handle, the connection terminal and the locking mechanism are arranged on a side of the battery pack away from the handle.
The hand-held vacuum cleaner according to claim 42, wherein a signal wire electrically connected to a signal light and a power cord electrically connected to the driving mechanism are laid on the grip portion; and wherein part of the signal wire is laid in the support member, and part of the power cord is laid in the handle.
The hand-held vacuum cleaner according to claim 41, wherein the battery pack comprises a bottom wall to support the hand-held vacuum cleaner and a side wall adjacent to the bottom wall, and the locking mechanism comprises a release button provided on the side wall.
The hand-held vacuum cleaner according to claim 44, wherein the battery pack is provided with a cooling channel to cool cells, and an air outlet of the cooling channel is arranged on the side wall.
The hand-held vacuum cleaner according to claim 45, wherein the air outlet of the cooling channel is arranged at an end away from the connection terminal.
The hand-held vacuum cleaner according to claim 41, wherein the battery pack is inserted into the grip portion, a sliding groove is provided on one of the battery pack and the grip portion, and a slider matched with the sliding groove is provided on a remaining one of the battery pack and the grip portion.
The hand-held vacuum cleaner according to claim 47, wherein the connection terminal is located on a side of the sliding groove or the slider adjacent to an edge of the battery pack.
The hand-held vacuum cleaner according to claim 47, wherein the sliding groove has a notch which faces toward an end where the connection terminal is located.
The hand-held vacuum cleaner according to claim 41, wherein the battery pack comprises a power cord interface, and the power cord interface, the connection terminal and the locking mechanism are arranged at a same end of the battery pack.
A hand-held vacuum cleaner, comprising:
a main body portion comprising a suction pipe, a driving mechanism configured to generate an airflow along the suction pipe, and a dust-air separation mechanism communicating with the suction pipe and being configured to separate dirt and dust from the airflow; and

a grip portion connected to the main body portion and configured for gripping; and

a power supply unit for supplying power to the main body portion;

wherein the grip portion comprises a holding shell and a switch movable relative to the holding shell, the switch has a first stroke and a second stroke from an initial position to a final position, both the first stroke and the second stroke have corresponding preset distances, and when the switch is only in the second stroke, the power supply unit supplies power to the driving mechanism.
The hand-held vacuum cleaner according to claim 51, wherein a ratio between the distance of the first stroke and the distance of the second stroke is any value in a range of 0.5 to 1.5.
The hand-held vacuum cleaner according to claim 52, wherein the distance of the first stroke and the distance of the second stroke are substantially the same.
The hand-held vacuum cleaner as claimed in claim 51, wherein the switch is rotatably connected to the holding shell through a rotating shaft; a first switch member and a second switch member are arranged on two sides of the rotating shaft; the first switch member is pressed to drive the second switch member to rotate, so that when the switch is in the second stroke, the power supply unit supplies the power to the driving mechanism.
The hand-held vacuum cleaner according to claim 54, wherein in a height direction of the grip portion, a deflector for conducting the power supply unit and the main body portion is provided below the second switch member.
The hand-held vacuum cleaner according to claim 55, wherein a diameter of the second switch member gradually decreases in a direction toward the deflector, and an end of the second switch member adjacent to the deflector has a smooth transition.
The hand-held vacuum cleaner according to claim 54, wherein the first switch member and the second switch member are integrally formed.
The hand-held vacuum cleaner according to claim 54, wherein a holding shell is provided with an opening; the first switch member at least partially protrudes out of the opening; the first switch member has a pressing surface; the pressing surface and a plane where the opening is located form an included angle, so that when the switch moves to the end of the second stroke, the pressing surface is substantially parallel to the plane where the opening is located.
The hand-held vacuum cleaner according to claim 51, wherein the grip portion further comprises an elastic member for resetting the switch, and the elastic member is horizontally arranged in the holding shell.
The hand-held vacuum cleaner as claimed in claim 59, wherein the switch is provided with a first guide post configured to guide a deformation direction of the elastic member, the holding shell is provided with a second guide post configured to guide the deformation direction of the elastic member, and the elastic member is connected with the first guide post and the second guide post.
A hand-held vacuum cleaner, comprising:
a main body portion comprising a suction pipe, a driving mechanism configured to generate an airflow along the suction pipe, and a dust-air separation mechanism communicating with the suction pipe and being configured to separate dirt and dust from the airflow; and

a grip portion connected to the main body portion and configured for gripping;

wherein the dust-air separation mechanism comprises a cyclone separation assembly with a cyclone cone, the cyclone cone has a plurality of cones, each of the cones has an inlet for allowing dust to flow into the cone and an outlet for the dust to flow out after the dust is separated, and a length of the outlet is 1.3 to 1.5 times a length of the inlet.
The hand-held vacuum cleaner according to claim 61, wherein the inlet has first sides arranged oppositely, and second sides arranged oppositely and connected with the first sides, a ratio of a length of the first side to a length of the second side ranges from 1.4 to 1.7.
The hand-held vacuum cleaner according to claim 61, wherein the length of the cone is 3 to 5 times the length of the inlet.
The hand held vacuum cleaner according to claim 63, wherein the length of the cone is 4 times the length of the inlet.
The hand-held vacuum cleaner according to claim 61, wherein the plurality of cones are distributed in a circular array; a portion of an outer wall of the cone away from a longitudinal axis of the cyclone separation assembly is at a predetermined angle to the longitudinal axis; a portion of the outer wall of the cone adjacent to the longitudinal axis of the cyclone separation assembly is substantially parallel to the longitudinal axis.
The hand-held vacuum cleaner according to claim 65, wherein the cyclone separation assembly has a central axis, and the cone located on an outer side is inclined toward the central axis.
The hand-held vacuum cleaner according to claim 61, wherein the cyclone separation assembly further comprises a screen connected to the cyclone cone, the screen is sleeved on an outside of the cyclone cone, and there is a gap between the screen and the cyclone cone.
The hand-held vacuum cleaner according to claim 67, wherein an end of the screen away from the driving mechanism is sealedly connected with an end of the cyclone cone away from the driving mechanism.
The hand-held vacuum cleaner according to claim 61, wherein an outer shell is provided with an air inlet adjacent to the driving mechanism; the dust-air separation mechanism comprises a cover with a through hole, and a dust cup and an air outlet HEPA which are arranged on two sides of the cyclone separation assembly, respectively; the cyclone separation assembly is disposed in the cover and communicates with the air inlet through the through hole.
The hand-held vacuum cleaner according to claim 69, wherein the air outlet HEPA is arranged on a side of the cyclone separation assembly adjacent to the driving mechanism; the dust-air separation mechanism further comprises a fixing bracket connected with the cyclone separation assembly; and the fixing bracket is configured to clamp and fix the air outlet HEPA, and engage with the driving mechanism.
A hand-held vacuum cleaner, comprising:
a main body portion comprising a suction pipe, a driving mechanism configured to generate an airflow along the suction pipe, and a dust-air separation mechanism communicating with the suction pipe and being configured to separate dirt and dust from the airflow; and

a grip portion connected to the main body portion and configured for gripping;

wherein the main body portion is provided with an air inlet adjacent to the driving mechanism; the dust-air separation mechanism comprises a screen which is configured to filter dust air, and is arranged adjacent to the air inlet; the screen is provided with a plurality of mesh holes and has a first end disposed away from the air inlet; the first end is provided with a skirt portion extending outwardly away from the screen; a distance between a starting end of the skirt portion and the mesh holes provided adjacent to the first end is a first distance; along an axial direction of the dust-air separation mechanism, a length occupied by the plurality of mesh holes is a second distance, and the first distance is at least one fifth of the second distance.
The hand-held vacuum cleaner according to claim 71, wherein a distance between the first end and the mesh holes provided adjacent to the first end is greater than or equal to 5 mm.
The hand-held vacuum cleaner according to claim 71, wherein the screen further has a second end disposed adjacent to the air inlet, a distance between the second end and the mesh holes disposed adjacent to the second end is a third distance, and the third distance is at least one fifth of the second distance.
The hand-held vacuum cleaner according to claim 73, wherein the distance between the second end and the mesh holes disposed adjacent to the second end is greater than or equal to 5 mm.
The hand-held vacuum cleaner according to claim 73, wherein the dust-air separation mechanism further comprises a deflector connected to the screen, and the deflector is configured to guide the airflow to the screen.
The hand-held vacuum cleaner according to claim 75, wherein the deflector is disposed at the second end, the deflector has a deflector surface arranged adjacent to the mesh holes.
The hand-held vacuum cleaner according to claim 76, wherein the guide surface is an inclined surface, and the inclined surface is inclined from top to bottom from a direction adjacent to the second end to a direction away from the second end.
The hand-held vacuum cleaner according to claim 75, wherein the deflector comprises a first deflector and a second deflector connected to the first deflector; the first deflector is arranged along an outer circumferential surface of the screen; and the second deflector extends from the second end to the first end.
The hand-held vacuum cleaner according to claim 75, wherein along an axial direction of the dust-air separation mechanism, a length of an end of the deflector is substantially the same as a length of the air inlet.
The hand-held vacuum cleaner according to claim 71, wherein an airflow direction of the suction pipe is substantially parallel to the axial direction of the dust-air separation mechanism.
A hand-held vacuum cleaner, comprising:
a main body portion comprising a suction pipe, a driving mechanism configured to generate an airflow along the suction pipe, and a dust-air separation mechanism communicating with the suction pipe and being configured to separate dirt and dust from the airflow; and

a grip portion connected to the main body portion and configured for gripping;

wherein a rotation axis of the driving mechanism and a longitudinal axis of the dust-air separation mechanism are substantially coincident; and an axis of the grip portion extends through an area between the driving mechanism and the dust-air separation mechanism.
The hand-held vacuum cleaner according to claim 81, wherein the dust-air separation mechanism comprises a cyclone separation assembly, and an air outlet HEPA connected to the cyclone separation assembly and located adjacent to the driving mechanism; and the axis of the grip portion extends through the air outlet HEPA.
The hand-held vacuum cleaner according to claim 82, wherein an outer shell is provided with an air inlet adjacent to the driving mechanism; the dust-air separation mechanism comprises a cover with a through hole; the cover communicates with the air inlet through the through hole; and the cyclone separation assembly is disposed within the cover.
The hand-held vacuum cleaner according to claim 83, wherein a diameter of the outer shell outside the driving mechanism is smaller than a diameter of the cover.
The hand-held vacuum cleaner according to claim 83, wherein the air inlet is located above the grip portion.
The hand-held vacuum cleaner according to claim 83, wherein a working portion is connected with the outer shell through a rod body, and the rod body is communicated with the air inlet.
The hand-held vacuum cleaner according to claim 82, wherein a first sealing member is further disposed between the air outlet HEPA and the driving mechanism to enhance sealing.
The hand-held vacuum cleaner according to claim 82, wherein the dust-air separation mechanism further comprises a fixing bracket connected with the cyclone separation assembly; and the fixing bracket is configured to clamp and fix the air outlet HEPA, and engage with the driving mechanism.
The hand-held vacuum cleaner according to claim 81, further comprising a power supply unit configured to supply power to the driving mechanism, and the power supply unit being located at an end of the grip portion away from the driving mechanism.
The hand-held vacuum cleaner according to claim 81, wherein the dust-air separation mechanism is detachably installed in a receiving space defined by the main body portion.