CN111870181A - Hand-held vacuum cleaner - Google Patents

Abstract

The present invention provides a hand-held vacuum cleaner, which is characterized by comprising: a first cyclone separator; a second cyclone separator located downstream of the airflow of the first cyclone separator; wherein the first cyclone separator comprises: a filter a cover, the upper end of the filter cover is detachably connected with the second cyclone to form an integral body; a cylinder, the second cyclone is detachably connected with the cylinder to make the second cyclone While closing the opening of the upper end of the cylinder body, the filter cover is inserted into the cylinder body, and the annular cavity formed between the filter cover and the cylinder body constitutes the cyclone cavity of the first cyclone separator. The invention can realize the disassembly and assembly of various parts of the vacuum cleaner.

Description

Handheld Vacuum Cleaner

technical field

The present invention relates to a hand-held vacuum cleaner.

Background technique

In most cases, hand-held vacuum cleaners will be equipped with two-stage cyclone separators, a first cyclone separator and a second cyclone separator. The first cyclone separator includes a larger annular cavity, and the airflow enters the annular cavity to form a cyclone airflow, and then enters To the second cyclone separator, a cyclone air flow is generated again through the second cyclone separator to remove the dirt. However, at present, the first cyclone separator and the second cyclone separator need to be disassembled and assembled through a complex structure, which is inconvenient to disassemble and assemble, and the user experience is poor.

SUMMARY OF THE INVENTION

In view of this, it is necessary to provide a hand-held vacuum cleaner to realize the disassembly and assembly of various components of the vacuum cleaner.

The present invention provides a hand-held vacuum cleaner, comprising:

the first cyclone;

a second cyclone, located downstream of the first cyclone;

Wherein, the first cyclone separator includes:

a filter cover, the upper end of the filter cover is detachably connected to the second cyclone to form an integral body;

A cylindrical body, the second cyclone separator is detachably connected to the cylindrical body, so that the filter cover is inserted into the cylindrical body while the second cyclone separator closes the opening at the upper end of the cylindrical body, and the The annular cavity formed between the filter cover and the cylindrical body constitutes the cyclone cavity of the first cyclone separator.

It can be seen from the above scheme that during installation, the filter cover of the first cyclone separator is preferentially installed on the second cyclone separator to form an integral body, and then after the second cyclone separator is installed with the cylinder of the first cyclone separator, The filter cover is inserted into the cylinder. At this time, an annular cavity is formed between the filter cover and the cylinder. This annular cavity constitutes the cyclone cavity of the first cyclone separator. The cyclone separator is disassembled and then directly brought out of the filter cover, which is convenient for cleaning the cylinder and the filter cover separately.

Further, after the filter cover is clamped with the second cyclone separator, a collection cavity is formed, the collection cavity collects the dust discharged from the dust outlet of the second cyclone separator, and the collection cavity is connected to the dust outlet of the second cyclone separator. Between the cyclone chambers, there is an airflow chamber for the airflow to enter the inlet of the second cyclone separator.

Further, the second cyclone separator includes a cavity shell, the cavity shell includes a first ring arm, the dust outlet communicates with the cavity shell, the inner side of the filter cover has a second ring arm, and the filter cover After being clamped with the second cyclone separator, the first ring arm and the second ring arm are butted to form the collection cavity.

Further, the collection chamber is defined by a ring arm, and the lower end of the ring arm extends to abut with a bottom cover, and the bottom cover is openably and closably provided on the cylinder to open and close the collection chamber.

Further, the bottom cover opens and closes the cyclone cavity while opening and closing the collection cavity.

The present invention provides a hand-held vacuum cleaner, comprising a front end portion and a rear end portion, the front end portion comprising:

the first cyclone;

a second cyclone, located downstream of the first cyclone;

Wherein, the first cyclone separator includes:

a filter cover, the upper end of the filter cover is detachably connected to the second cyclone to form an integral body;

A cylindrical body, the second cyclone separator is detachably connected to the cylindrical body, so that the filter cover is inserted into the cylindrical body while the second cyclone separator closes the opening at the upper end of the cylindrical body, and the The annular cavity formed between the filter cover and the cylinder constitutes the cyclone cavity of the first cyclone separator;

The rear end portion is inserted into the cylindrical body in a direction perpendicular to the front-rear direction and the front end of the rear end portion is in contact with the second cyclone to form a restricting portion for restricting the second cyclone. Rotation after the cyclone is clamped with the cylinder.

It can be seen from the above solutions that the hand-held vacuum cleaner needs to be disassembled and assembled in sequence. During the disassembly process, the rear end part needs to be slid out from the front end part in advance, and then the second cyclone separator can be removed from the cylinder of the first cyclone separator. The filter cover can be disassembled only after the horizontal rotation exits the clamping position, so when the second cyclone separator is clamped with the cylinder body, it is not necessary to set a positioning structure at the clamping position to rotate the second cyclone separator and the cylinder body After clamping, the rotation restriction of the second cyclone separator can be completed through the rear end part.

Further, the second cyclone separator includes a downstream airflow outlet pipe, the rear end portion includes an airflow inlet pipe, and after the rear end portion is inserted into the cylinder body, the airflow inlet pipe is connected to the airflow outlet. Pipe connection.

Further, the rear end surface of the air outlet duct surface is an inclined surface, and the inclined surface is inclined toward the rear end in the insertion direction of the rear end portion, and the front end surface of the airflow outlet duct is inclined in the direction of the inclined surface. In the same way, the rear end face or the front end face is provided with an annular sealing member, and as the rear end portion is inserted into the cylinder, the sealing member is pressed against the rear end face and the front end face There is a seal between the air inlet pipe and the air outlet pipe after butt joint.

Further, a first terminal is provided on the outer side of the cylinder body, the conductor connected to the first terminal extends to the suction pipe at the front end through the cylinder body, and the rear end part includes a control device and an electrical connection with the control device. For the connected second terminal, after the rear end portion is inserted into the cylinder body, the first terminal and the second terminal are in contact and conduct.

Further, the outer side of the cylinder body is extended with a blocking piece, the rear end part is provided with a rotating shaft, the side of the rotating shaft has a blocking part, and the rotating shaft is rotated to make the blocking part abut with the blocking piece to restrict After the rear end part is inserted and separated from the cylinder body, rotating the rotating shaft makes the blocking part and the blocking piece staggered so as to facilitate the separation of the rear end part and the cylinder body after insertion.

Description of drawings

FIG. 1 is a schematic structural diagram of a specific embodiment of the present invention.

FIG. 2 is a schematic structural diagram of a front end portion of an embodiment of the present invention.

FIG. 3 is a schematic structural diagram of a rear end portion of an embodiment of the present invention.

4 is a cross-sectional view of a front end portion of an embodiment of the present invention.

FIG. 5 is a schematic structural diagram of a cylinder according to a specific embodiment of the present invention.

FIG. 6 is a schematic structural diagram of the second cyclone separator and the filter screen rotary card after being clamped in a specific embodiment of the present invention.

FIG. 7 is a schematic diagram of the butt sealing of the airflow outlet duct and the airflow inlet duct according to an embodiment of the present invention.

Reference numerals: hand-held vacuum cleaner 100; front end portion 10; rear end portion 20; cyclone separation device 11; suction duct 12; casing 21; upper casing 211; front casing 212; lower casing 213; handle 214; first cyclone separation 110; cylinder 111; filter cover 112; bottom cover 113; first opening 111A; second opening 111B; slide plate 2131; hook 2132; Cavity 123; cavity shell 124; air inlet 1221; air outlet 1222; dust outlet 1223; first snap structure 1211; second snap structure 1111; third snap structure 1212; fourth snap structure 1121; positioning structure 101; cyclone cavity 102; first L-shaped hook 31; first slot 2121; second L-shaped hook 32; second slot 2111; second terminal 2124; collection chamber 103; airflow chamber 104; first ring arm 201; second ring arm 202; filter 40; cover 50; first filter unit 41; second filter unit 42; airflow outlet duct 125; A cavity 1231; a second cavity 1232; a partition plate 1233; a horizontal partition plate 43;

The following specific embodiments will further illustrate the present invention in conjunction with the above drawings.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention. It should be understood that the accompanying drawings are only provided for reference and illustration, and are not used to limit the present invention. The connection relationship shown in the drawings is only for the convenience of clear description, and does not limit the connection manner.

It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component, or there may be an intervening component at the same time. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It should also be noted that, unless otherwise expressly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection, a detachable connection, or an integral connection ; It can be a mechanical connection, it can also be an electrical connection, it can be the internal communication between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations. The terms used herein in the description of the present invention are for the purpose of describing specific embodiments only, and are not intended to limit the present invention.

It should also be noted that, in the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal" and "inside" The orientation or positional relationship indicated by , "outside", etc. is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation , constructed and operated in a specific orientation, and therefore should not be construed as limiting the invention. Furthermore, the terms "first", "second", and "third" are used for descriptive purposes only and should not be construed to indicate or imply relative importance.

As shown in FIG. 1 , a hand-held vacuum cleaner 100 includes a front end portion 10 and a rear end portion 20 .

As shown in FIG. 2 , the front end portion 10 includes a cyclone separation device 11 and a suction pipe 12 arranged at the front end of the cyclone separation device 11 . The front end of the suction pipe 12 is a suction port, and the suction pipe 12 is used for installation The dust suction head communicates with the suction port.

As shown in FIG. 3 , the rear end portion 20 includes a casing 21 , an airflow generator and a battery assembly (not shown) disposed in the casing 21 , and the casing 21 includes an upper casing 211 , a front casing 212, the lower shell 213 and the handle 214, the upper end of the front shell 212 can be connected to the upper shell 211, the lower end can be connected to the lower shell 213, the upper end of the handle 214 can be connected to the upper shell 211, and the lower end can be connected to the upper shell 211 The lower case 213 and the front case 212 are located at the front end of the handle 214 , and the gap between the handle 214 and the front case 212 is used to accommodate the user's fingers holding the handle 214 .

The airflow generator and the battery assembly can be arranged in the upper casing 211 and the airflow generator is located at the front end of the battery assembly, and the battery assembly is used to supply power to the airflow generator to provide electrical energy, The airflow generator is used to provide power for the airflow to flow through the cyclone separation device 11 .

The front end portion 10 communicates with the rear end portion 20 , and the air flow filtered by the cyclone separation device 11 enters the rear end portion 20 from the front end portion 10 .

In this embodiment, the rear end of the front end portion 10 is inserted into the front end of the rear end portion 20, and the insertion direction is the vertical direction. In this way, the hand-held vacuum cleaner 100 can be split into two main bodies, one is the independent front end part 10 and the other is the independent rear end part 20, if the front end part 10 or the rear end part If the part 20 is damaged and needs to be repaired, only the part that needs to be repaired can be carried, and it is not necessary to carry the entire handheld vacuum cleaner 100 .

As shown in FIG. 4 and FIG. 5 , the cyclone separator 11 includes a first cyclone separator 110 , and the first cyclone separator 110 is an upstream cyclone separator. The first cyclone separator 110 includes a cylindrical body 111 and a filter cover 112 disposed in the cylindrical body 111 , and the filter cover 112 is annular. The upper end of the cylindrical body 111 has a first opening 111A, and the lower end of the cylindrical body 111 has a second opening 111B. A bottom cover 113 is hinged at the second opening 111B, and the bottom cover 113 can be connected by the front hook 2132 of the slide plate 2131 provided on the bottom shell 213, so that the bottom cover 113 can be covered or opened the second opening 111B. The operating end 2133 of the sliding plate 2131 is located below the handle 214, so that the user operates the sliding plate 2131 on the operating end 2133 to make the hook 2132 disengage from the bottom cover 113, so that the bottom cover 113 can be opened. The second opening 111B is used to release the dirt in the cylinder body 111. Since the operating end 2133 is far away from the second opening 111B, the probability of the dirt flying to the user's hands is lower.

Continuing to refer to FIG. 4 , the cyclone separation device 11 includes a second cyclone separator 120 , and the second cyclone separator 120 is an upstream cyclone separator. The second cyclone separator 120 includes a casing 121 and a plurality of cyclones 122 , and the cyclones 122 can be installed and integrated through the casing 121 . The casing 121 can form a cavity 123 , and the cavity 123 is above the cyclone 122 . The cyclone 122 is roughly tapered, and the cone end is at the lower end. The cyclone 122 includes an airflow inlet 1221, an airflow outlet 1222 and a dust outlet 1223 near the upper end. The upper end of the cyclone 122 can pass through the casing. The baffle 1233 of 21 is installed so that the airflow outlet 1222 communicates with the cavity 123 .

As shown in FIG. 5 and FIG. 6 , the casing 121 of the second cyclone 120 is provided with a first snap structure 1211 , and the inner side wall of the cylindrical body 111 is provided with a second snap structure 1111 . The shell 121 of the second cyclone separator 120 is provided with a third buckle structure 1212 , wherein the third buckle structure 1212 is located below the first buckle structure 1211 , and the upper end of the filter cover 112 A fourth snap structure 1121 is provided, and the diameter of the filter cover 112 is smaller than the diameter of the cylindrical body 111 , and corresponding positioning structures 101 are provided on the second cyclone separator 120 and the filter cover 112 .

Preferably, the filter cover 112 and the second cyclone separator 120 are detachably rotatably clamped. During the clamping process, the positioning structure cooperates to realize the clamping and positioning of the filter cover 112 and the second cyclone separator 120. In order to prevent the filter cover 112 from being easily withdrawn from the snap connection with respect to the second cyclone separator 120 . Then, the second cyclone separator 120 carrying the filter cover 112 is inserted into the cylindrical body 111 from the first opening 111A of the cylindrical body 111, so that the second cyclone separator 120 is opposite to the The cylindrical bodies 111 are horizontally rotated and clamped together.

After the above operations are completed, the second cyclone 120 closes the first opening 111A, and the filter cover 112 is placed in the cylindrical body 111 , and the filter cover 112 and the cylindrical body 111 form a space between them. The annular cavity 102 constitutes the cyclone cavity 102 of the first cyclone separator 110. The cyclone cavity 102 communicates with the suction duct 12, and the airflow entering the suction duct 12 enters into a vortex. The cyclone chamber 102 is filtered through the filter cover 112 and enters the inner side of the filter cover 112 .

Referring back to FIG. 2 and FIG. 3 , the rear side of the cylindrical body 111 is provided with opposite first L-shaped hooks 31 , one of the hooks of the first L-shaped hook 31 faces left, and the other The hook portion of the L-shaped hook 31 faces to the right, and the front shell 212 is provided with a first slot 2121 into which the hook portion of the first L-shaped hook 31 is vertically inserted. The first slot 2121 for the vertical slot. A second L-shaped hook 32 is provided on the second cyclone separator 120 , the hook portion of the second L-shaped hook 32 faces upward, and the upper shell 211 is provided with a second L-shaped hook for the second L-shaped hook. The hook portion of the hook 32 is inserted into the second slot 2111 vertically, and the second slot 2111 is a vertical slot. When the front end portion 10 and the rear end portion 20 are vertically inserted, the hook portion of the first L-shaped hook 31 is inserted into the first slot 2121 , and the second L-shaped hook 32 is inserted into the first slot 2121 . Inserted into the second slot 2111, the L-shaped hooks prevent the rear end portion 20 from moving backward relative to the front end portion 10, the first L-shaped hooks 31 and the second L-shaped hooks The hook 32 will allow the rear end portion 20 to be fully engaged with the front end portion 10 and not easily shake.

Continuing to refer to FIG. 2 and FIG. 3 , a blocking piece 111C extends from the outer side of the cylindrical body 111 , and the rear end portion 20 is provided with a rotating shaft 2122 . The extension direction of the rotating shaft 2122 is the same as the insertion direction (vertically downward in this embodiment). The end of the rotating shaft 2122 preferably extends to the lower surface of the lower shell 213 so as to hide the rotating shaft 2122 . The side of the rotating shaft 2122 has a blocking portion 2123. Rotating the rotating shaft 2122 makes the blocking portion 2123 and the blocking piece 111C staggered so as to facilitate the separation of the rear end portion 20 and the cylindrical body 111 after being inserted and rotated. The rotating shaft 2122 makes the blocking portion 2123 abut against the blocking piece 111C to limit the separation of the rear end portion 20 and the cylindrical body 111 after being inserted.

Continuing to refer to FIG. 2 and FIG. 3 , a first terminal 111D is provided on the outer rear side of the cylindrical body 111 , and the conductor connected to the first terminal 111D extends to the suction pipe 12 at the front end through the cylindrical body 111 . The suction duct 12 may be provided with a contact terminal connected to the conductor, and the contact terminal is used to electrically connect the dust suction head connected to the suction duct 12 . The front case 212 is provided with a second terminal 2124, and the second terminal 2124 is electrically connected to the control device in the rear end portion 20. After the rear end portion 20 is inserted into the cylinder 111, the The first terminal 111D is in contact with the second terminal 2124, so that the cleaning head can be powered by the battery assembly or the operation of the cleaning head can be controlled.

Referring to FIG. 1 , the front end of the upper shell 211 contacts with the second cyclone 120 to form a restricting portion, and the restricting portion restricts the second cyclone 120 from being snapped to the cylinder 111 rotation. Therefore, when disassembling, the rear end part 20 should be disassembled from the front end part 10 first, and then the second cyclone separator 120 can be disassembled from the cylindrical body 111, and then the filter cover 112 can be disassembled. When the second cyclone separator 120 is clamped with the cylinder body 111, there is no need to set up a positioning structure at the clamping position to rotate the second cyclone separator 120 and the cylinder body 111. The rotation restriction of the second cyclone separator 120 can be completed through the rear end portion 20 .

Continuing to refer to FIG. 4 , a collection cavity 103 is formed after the filter cover 112 and the second cyclone separator 120 are snapped together. The dust outlet 1223 of the cyclone 122 is located above the collection cavity 103 , and the dust is discharged into the The collection chamber 103 is collected. Between the collection chamber 103 and the cyclone chamber 102, there is an airflow chamber 104 for supplying airflow into the inlet of the second cyclone separator 120, and the airflow filtered by the filter cover 112 enters the airflow chamber 104 and passes The airflow flows to the airflow inlet 1221 above the cyclone 122 and enters the cyclone 122 .

The collection chamber 103 is defined by a ring arm, and the lower end of the ring arm extends to abut with the bottom cover 113 . Opening the bottom cover 113 can open the lower end of the collection chamber 103 and close the bottom cover After 113, the collection chamber 103 will be closed. The cyclone cavity 102 is located at the periphery of the collection cavity 103. After opening the bottom cover 113, the collection cavity 103 and the cyclone cavity 102 are opened at the same time, so that the small dirt remaining in the collection cavity 103 can be removed at the same time. and large dirt remaining in the cyclone chamber 102 .

The second cyclone separator 120 further includes a cavity shell 124 at the bottom, the cavity shell 124 includes a downwardly extending first ring arm 201, the dust outlet 1223 communicates with the cavity shell 124, and the filter cover 112 There is a second ring arm 202 on the inner side of the filter cover. After the filter cover 112 is clamped with the second cyclone separator 120, the first ring arm 201 and the second ring arm 202 are connected to form the collection cavity 103. It can be seen from this that when the filter cover 112 is removed from the second cyclone separator 120 , the first ring arm 201 and the second ring arm 202 are separated, which is convenient for wiping the inner wall of the filter cover 112 , the inner and outer walls of the first ring arm 201 , and the inner and outer walls of the second ring arm 202 .

Continuing to refer to FIG. 4 , a filter 40 is provided in the upper cavity 123 of the cyclone 122 , and an openable and closable cover 50 is provided on the casing 121 , and the cover 50 is opened to remove the filter 40 from the cavity 123 . Taking and placing the filter 40 is convenient for the user to directly replace the filter 40 without sending it to a maintenance point for replacement. In this embodiment, the cover 50 is provided on the top of the housing 121 , and the cover 50 may be provided on the housing 121 by means of rotary snap connection, screw connection or hinged connection.

The filter 40 includes a first filter unit 41 and a second filter unit 42 . The cyclones 122 include a first group of cyclones and a second group of cyclones, the first group of cyclones and the second group of cyclones may include a plurality of cyclones 122, the cyclones of the first group of cyclones. The airflow outlet 1222 of each cyclone 122 communicates with the first filter unit 41 to form a first air passage, and the airflow outlet 1222 of each cyclone 122 in the second group of cyclones communicates with all the cyclones 122 in common. The second filter unit 42 is used to form a second air passage. The first air passage and the second air passage are jointly connected to the downstream airflow outlet duct 125 provided on the housing 121, and the airflow is again at the airflow outlet. Conduit 125 converges and then converges into the rear end portion 20 .

The air flow is divided in the cavity 123, so that the gases flowing out of the two groups of cyclones 122 are filtered again through the filter units 41 and 42 respectively without interfering with each other, thereby increasing the filter area, and the air flow through the filter 40. The resistance is reduced, the loss of airflow velocity is reduced, and the dust-absorbing ability of the vacuum cleaner is effectively improved.

In this embodiment, the cavity 123 is divided into a first cavity 1231 and a second cavity 1232 by a partition plate 1233 , and the first filter unit 41 communicates with the first group through the first cavity 1231 The airflow outlet 1222 of each cyclone 122 of the cyclone, the second filter unit 42 communicates with the airflow outlet 1222 of each cyclone 122 of the second group of cyclones through the second cavity 123 .

More specifically, the first group of cyclones and the second group of cyclones are distributed around the vertical axis, the first group of cyclones is located at the periphery of the second group of cyclones, the baffle 1233 In a ring shape, the cavity 123 is divided into an inner cavity 1231 and an outer cavity 1232 by the partition 1233 . The filter 40 is arranged inside the partition 1233 , the first filter unit 41 is stacked above the second filter unit 42 , and the first filter unit 41 and the second filter unit 42 are arranged between the first filter unit 41 and the second filter unit 42 The horizontal baffle 43 and the baffle 1233 separate the cavity 123 into the first air passage and the second air passage, so that the filter 40 can be accommodated in the cavity 123 more neatly.

The first filter unit 41 includes a first annular filter element around the axis, the second filter unit 42 includes a second annular filter element around the axis, and the airflow outlet 1222 of the first group of cyclones flows out. The air flows through the top of the outer cavity into the inner cavity (the top of the partition plate 1233 is provided with an air port), and diffuses outward from the middle of the first annular filter element to filter through the first annular filter element, The air flow from the air outlet 1222 of the second group of cyclones directly flows through the middle of the second annular filter element and then is filtered through the second annular filter element, making full use of the space of the cavity 123 and reducing the The volume of the cavity 123 .

The outer sides of the first annular filter element and the second annular filter element can both have an annular airflow channel, and the two annular airflow channels are jointly connected to the airflow outlet pipe 125 on the same side and enter the annular filter element. The air flow can be diffused from all directions of the annular filter element to the outer annular airflow channel, thereby increasing the filtering area of the airflow at the filter element and reducing the dust suction resistance.

The cover 50 is located above the filter 40 , the filter 40 and the cover 50 can be integrated into a structure, and the filter 40 is inserted into the cavity with the cover 50 or taken out from the cavity , or the filter 40 and the cover 50 can be separated, the filter 40 is vertically compressed in the inner cavity through the cover 50, and the air outlet pipe 125 is located in the filter The upper shell 211 is connected to the rear side of the device 40 .

As shown in FIG. 2 , FIG. 3 and FIG. 7 , the upper casing 211 has an airflow inlet duct 2112 . After the rear end portion 20 is plugged with the front end portion 10 , the airflow inlet duct 2112 is connected to the airflow inlet duct 2112 . The outlet ducts 125 are butted so that the airflow outlet duct 125 communicates with the airflow generator. In this embodiment, the airflow inlet duct 2112 is the inlet of the airflow generator. After the rear end portion 20 and the front end portion 10 are plugged in, the airflow generator is directly aligned with the air flow generator. The cavity 123 forms a strong negative pressure.

The rear end surface 1251 of the air outlet duct 125 is an inclined surface, and the inclined surface is inclined toward the rear end in the insertion direction of the rear end portion 20 (vertically downward in this embodiment). The front end surface 2113 of the pipe 2112 is inclined in the same direction as the inclined surface, the rear end surface 1251 or the front end surface 2113 is provided with an annular seal 50 , as the rear end portion 20 and the cylindrical body 111 are vertical The rear end surface 1251 and the front end surface will gradually be butted and approached in a bevel manner, and the sealing member 50 will be pressed between the rear end surface 1251 and the front end surface 2113 very reliably, thereby Air leaks through the gap between the airflow inlet duct 2112 and the airflow outlet duct 125 through the seal 50 .

In the description and claims of this application, the words "including/comprising" and the words "having/comprising" and variations thereof are used to designate the presence of stated features, values, steps or components, but do not preclude the presence or addition of a or multiple other features, values, steps, components, or combinations thereof.

Some features of the invention, for clarity, are described in separate embodiments, however, these features may also be described in combination in a single embodiment. Conversely, some features of the invention are, for brevity, described in a single embodiment only, however, these features may also be described in different embodiments alone or in any suitable combination.

The above descriptions are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention shall be included in the protection of the present invention. within the range.

Claims (10)

1. A hand-held cleaner, comprising:

a first cyclone separator;

a second cyclone separator downstream of the first cyclone separator;

wherein the first cyclone separator comprises:

the upper end of the filter cover is detachably connected with the second cyclone separator to form a whole;

the second cyclone separator is detachably connected with the cylinder body, so that the second cyclone separator seals the opening at the upper end of the cylinder body, the filter cover is inserted into the cylinder body, and an annular cavity formed between the filter cover and the cylinder body forms a cyclone cavity of the first cyclone separator.

2. The hand-held cleaner of claim 1, wherein the filter housing is engaged with the second cyclone separator to form a collection chamber for collecting dust discharged from the dust outlet of the second cyclone separator, and an airflow chamber for airflow into the inlet of the second cyclone separator is provided between the collection chamber and the cyclone chamber.

3. The hand-held vacuum cleaner of claim 2, wherein the second cyclone separator comprises a chamber shell, the chamber shell comprises a first annular arm, the dust outlet communicates with the chamber shell, a second annular arm is arranged on the inner side of the filter cover, and after the filter cover is clamped with the second cyclone separator, the first annular arm and the second annular arm are butted to form the collection chamber.

4. The hand-held cleaner of claim 2, wherein the collection chamber is defined by a collar arm having a lower end extending into abutment with a bottom cover openably provided on the canister to open and close the collection chamber.

5. The hand-held cleaner of claim 4, wherein the bottom cover opens and closes the cyclone chamber while opening and closing the collection chamber.

6. A hand-held cleaner comprising a front end portion and a rear end portion, the front end portion comprising:

a first cyclone separator;

a second cyclone separator downstream of the first cyclone separator;

wherein the first cyclone separator comprises:

the upper end of the filter cover is detachably connected with the second cyclone separator to form a whole;

the second cyclone separator is detachably connected with the cylinder body, so that the second cyclone separator seals the opening at the upper end of the cylinder body and simultaneously inserts the filter cover into the cylinder body, and an annular cavity formed between the filter cover and the cylinder body forms a cyclone cavity of the first cyclone separator;

the rear end part is inserted into the barrel in the direction perpendicular to the front-back direction, the front end of the rear end part is in contact with the second cyclone separator to form a limiting part, and the limiting part is used for limiting the rotation of the second cyclone separator after being clamped with the barrel.

7. The hand-held cleaner of claim 6, wherein the second cyclonic separator includes a downstream airflow outlet duct, the rear end portion includes an airflow inlet duct, and the airflow inlet duct interfaces with the airflow outlet duct upon mating with the canister.

8. The hand-held cleaner according to claim 7, wherein a rear end surface of the airflow outlet duct surface is a slope surface which is inclined in such a manner that the insertion direction of the rear end portion is toward a rear end, a front end surface of the airflow outlet duct surface is inclined in the same direction as the slope surface, an annular seal member is provided on the rear end surface or the front end surface, and the seal member is pressed between the rear end surface and the front end surface to seal the airflow inlet duct and the airflow outlet duct after being abutted therewith as the rear end portion is inserted into the cylinder.

9. The hand-held vacuum cleaner according to claim 8, wherein a first terminal is provided on the outer side of the cylinder, the conductor connected with the first terminal extends to the suction pipe at the front end through the cylinder, the rear end part comprises a control device and a second terminal electrically connected with the control device, and the first terminal and the second terminal are in contact conduction after the rear end part is plugged with the cylinder.

10. The hand-held vacuum cleaner as claimed in claim 6, wherein a blocking piece extends from the outer side of the cylinder, a rotating shaft is arranged at the rear end, a blocking part is arranged at the side edge of the rotating shaft, the rotating shaft is rotated to enable the blocking part to abut against the blocking piece to limit the separation of the rear end part and the cylinder after being plugged, and the rotating shaft is rotated to enable the blocking part to be staggered with the blocking piece to facilitate the separation of the rear end part and the cylinder after being plugged.

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