Cleaning module of handheld vacuum cleaner

Abstract

The present invention relates to the technical field of vacuuming equipment, and in particular to a cleaning module of a handheld vacuum cleaner, which is composed of a dust nozzle assembly and a cyclone separation assembly of the handheld vacuum cleaner; the dust nozzle assembly has a cleaning end that can be located outside the dust collecting chamber of the handheld vacuum cleaner or inside the dust collecting chamber of the handheld vacuum cleaner and in contact with the filter of the handheld vacuum cleaner, and a first adapter end and a second adapter end that are adapted to the dust discharge port of the handheld vacuum cleaner; the cyclone separation assembly has a driving structure and an air intake structure, the driving structure can control the filter to rotate in a first direction, and the air intake structure can generate a third airflow that flows around the filter in a second direction; the filter is self-cleaned by the third airflow flowing around the filter and the self-rotation of the filter to ensure the use of the handheld vacuum cleaner.

Description

Technical Field

[0001] The present invention relates to the technical field of dust collection equipment, and in particular to a cleaning module of a handheld dust collector. Background Art

[0002] A vacuum cleaner is a device that uses a motor to drive blades to rotate rapidly, creating negative air pressure within a sealed housing, thereby sucking in dust. As is known from the prior art, there are many types of vacuum cleaners, and handheld vacuum cleaners are a major category among them. To facilitate user convenience, these vacuum cleaners are compact in size. For example, a handheld vacuum cleaner disclosed in Authorization Publication No. CN103784081B can be referenced.

[0003] However, existing handheld vacuum cleaners mainly separate dust and airflow through a cyclone separation structure (with a filter). Therefore, after a period of use, the filter needs to be cleaned to ensure the dust collection effect. Nowadays, users need to disassemble the body of the handheld vacuum cleaner to clean the filter, which is very cumbersome. In addition, manual cleaning is prone to blind spots, which also reduces the cleaning effect and is not conducive to the long-term use of the vacuum cleaner.

[0004] In summary, improvements need to be made. Summary of the Invention

[0005] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a handheld vacuum cleaner to solve the problems arising from the above-mentioned background technology.

[0006] The technical solution of the present invention is achieved as follows: a handheld vacuum cleaner comprising:

[0007] The body comprises an airflow generating assembly, a power supply assembly, and a control button for controlling power on or off of the airflow generating assembly;

[0008] A dust collecting chamber is formed on the machine body;

[0009] an exhaust port formed on the machine body and communicating with the dust collecting chamber;

[0010] A cyclone separation assembly is provided in the dust collecting chamber and has a filter capable of separating dust and airflow;

[0011] 18. The vacuum cleaner of claim 17, wherein the vacuum cleaner has a first port and a second port, wherein the vacuum cleaner has a first port and a second port, and wherein the vacuum cleaner has a second port.

[0012] In the first mode, the dust suction nozzle assembly is installed at the dust discharge port through the first adapter end. When the airflow generating assembly generates the first airflow, the dust enters the dust collecting chamber from the dust suction chamber. After being separated by the filter, the first airflow is discharged from the exhaust port; in the second mode, the dust suction nozzle assembly is installed at the dust discharge port through the second adapter end and causes the cleaning end to be located in the dust collecting chamber and contact the filter. When the airflow generating assembly generates the second airflow and controls the rotation of the filter through the driving structure, the second airflow enters the dust collecting chamber from the exhaust port, and at the same time cooperates with the air intake structure to form a third airflow that surrounds the filter in the dust collecting chamber to clean the filter.

[0013] Preferably, the dust nozzle assembly includes:

[0014] The first closing body and the second closing body are integrally formed and arranged perpendicular to each other;

[0015] A dust collection chamber is formed in the first closed body and passes through both ends of the first closed body;

[0016] The dust exhaust chamber is formed in the second closed body, penetrates the second closed body, and is independent of the dust suction chamber;

[0017] The first cleaning brush is arranged on the first closed body; wherein, a groove is formed on the inner wall of the dust exhaust port, and a first limit block adapted to the cavity opening of the dust suction chamber and the cavity opening of the dust exhaust chamber is slidably connected in the groove, and a first spring is fixedly connected between the first limit block and the groove.

[0018] Preferably, the first cleaning brush is slidably connected to the first closing body, and a second spring is connected between the first cleaning brush and the second closing body.

[0019] Preferably, the cyclone separation assembly includes:

[0020] The mounting body is composed of a first body disposed in the dust collecting chamber, and a second body and a third body rotatably connected to both ends of the first body, and divides the dust collecting chamber into a top chamber for mounting the air flow generating assembly and communicating with the exhaust port, a middle chamber communicating with the dust suction chamber and for mounting the filter, and a bottom chamber for mounting the air intake structure;

[0021] The separation port is formed on the first body; the communication port is formed on the second body;

[0022] an exhaust cavity formed in the first body and communicating with the top cavity through the communication port and communicating with the middle cavity through the separation port;

[0023] The filter is installed on the first body and is coaxially arranged with the first body and covers the outside of the separation port;

[0024] The driving structure is installed in the bottom cavity; the air intake structure is installed in the bottom cavity and has an air intake port that runs through the body.

[0025] Preferably, a driving cavity is formed on the third body, a first gear located in the driving cavity is installed at the bottom of the first body, a second gear rotatably engaged with the first gear is provided in the driving cavity, and the second gear has a driven nut; the driving structure includes:

[0026] a worm, rotatably disposed in the bottom cavity via a first rotating shaft;

[0027] The electromagnetic structure is provided in the exhaust chamber and installed between the worm and the airflow generating assembly;

[0028] a worm wheel rotatably disposed in the bottom cavity via a second rotating shaft and engaged with the worm;

[0029] a third gear mounted on the second rotating shaft;

[0030] A lifting rod is slidably connected to the wall of the bottom cavity, and one end of the lifting rod is fixedly connected to the bottom of the bottom cavity by a third spring;

[0031] The rack is installed on the lifting rod and meshes with the third gear; wherein the lifting rod is installed with a screw rod that cooperates with the driven nut.

[0032] Preferably, a transmission cavity is provided at the top end of the lifting rod, and a plurality of limiting grooves are provided circumferentially on the cavity wall of the transmission cavity; the screw comprises:

[0033] The screw body; the transmission body is integrally formed with the screw body and is disposed in the transmission cavity;

[0034] The lifting shaft is integrally formed with the screw body, is located in the middle cavity and can be against the cleaning end, and drives the cleaning end to move up and down and reciprocate when the screw body moves up and down; wherein, a plurality of mounting grooves are provided on the outer wall of the transmission body, and a second limit block is hinged in each mounting groove, and a fourth spring is provided between the second limit block and the mounting groove, which can drive the second limit block to be stuck in the limit groove.

[0035] Preferably, the electromagnetic structure includes:

[0036] an electromagnet, which is installed in the exhaust chamber via a fifth spring and has a rotating body connected to the worm, the rotating body having an electromagnet, and a spring cavity for installing the fifth spring is formed between the electromagnet and the third body;

[0037] A transmission groove is provided on the side of the rotating body close to the airflow generating assembly; a transmission rod is mounted on the airflow generating assembly, and one end of the transmission rod extends into the transmission groove; wherein the bottom of the transmission groove is provided with a plurality of transmission limit grooves, and the transmission rod is composed of an outer shaft connected to the airflow generating assembly, a telescopic cavity provided in the outer shaft, and an inner shaft slidably connected to the telescopic cavity;

[0038] One end of the inner shaft is provided with a transmission limit block adapted to the transmission limit groove, and a fifth spring is connected between the inner shaft and the bottom of the telescopic cavity; when the electromagnet is energized, the inner shaft is attracted to move close to the transmission groove.

[0039] Preferably, the air intake structure includes:

[0040] The gas inlet is installed in the bottom cavity and is coaxially arranged with each second rotating shaft;

[0041] An air intake cavity is formed in the air intake body, and one end of the cavity penetrates the body and forms the air intake port;

[0042] An air delivery cavity is formed on the air inlet cavity and the third body and connects the air inlet cavity and the spring cavity;

[0043] An impeller is mounted on the second rotating shaft and is located at the connection between the air inlet cavity and the air delivery cavity;

[0044] An air transmission cavity is formed on the third body and communicates with the spring cavity;

[0045] The jet structure is installed in the middle cavity and has a jet end connected with the air transmission cavity.

[0046] Preferably, the jetting structure includes:

[0047] The jet body is installed in the middle cavity and is integrally formed with the body and has a jet cavity;

[0048] The one-way air jet nozzle is formed on the air jet body and is connected to the air jet cavity, and can generate a third air flow tangential to the filter screen; wherein the air jet cavity is connected to the air transmission cavity.

[0049] Preferably, the first body is provided with a telescopic slot on one side close to the filter screen, and a second cleaning brush is slidably connected to the telescopic slot, and the second cleaning brush is connected to the slot wall of the telescopic slot via a sixth spring;

[0050] It also includes a lifting cavity formed on the first body and connected to each telescopic slot. A control rod with one end abutting against the electromagnet is slidably connected in the lifting cavity, and a plurality of protrusions are fixedly connected to the control rod.

[0051] In addition, the present invention also provides a method for using the cleaning module of a handheld vacuum cleaner, which uses the above-mentioned cleaning module and includes the following steps:

[0052] S1: Remove the dust nozzle assembly and fix it to the dust outlet through the second adapter, while making the first cleaning brush located in the dust collection chamber and in contact with the filter;

[0053] S2: Start the airflow generating assembly and form a second airflow, which flows from the inside of the filter to the outside of the filter to clean the filter and discharge impurities from the dust exhaust chamber;

[0054] S3: In step S2, the electromagnetic structure is energized to attract the inner shaft of the transmission rod to approach the transmission groove until the transmission limit block is engaged with the transmission limit groove;

[0055] S4: When step S3 is completed, the airflow generating assembly controls the rotation of the worm, and uses the worm to control the rotation of the worm wheel. When the worm wheel rotates, the second rotating shaft drives the impeller to rotate, and introduces gas from the air inlet into the air inlet chamber, and then sends it into the spring chamber through the air delivery chamber;

[0056] S5: When the gas is fed into the spring chamber, the electromagnet is lifted up and the gas enters the gas transmission chamber. After the gas enters the jet chamber, the third airflow is ejected from the one-way jet nozzle in a direction tangential to the filter screen.

[0057] S6: Simultaneously with step S3, the worm gear controls the rotation of the second rotating shaft, and the third gear cooperates with the third spring to control the reciprocating lifting and lowering of the lifting rod, thereby driving the first body and the filter to rotate. When the filter rotates, the first cleaning brush scrubs the outer wall of the filter, and the third airflow blows the filter;

[0058] In any one of steps S3 to S6, the lifting rod moves back and forth, and the lifting shaft controls the first cleaning brush to move back and forth longitudinally to increase the brushing surface of the filter screen;

[0059] In any one of steps S3 to S6, the electromagnet rises and uses the control rod to control the second cleaning brush to leave the telescopic slot, and allows part of the brush strip of the second cleaning brush to pass through the filter. When the first body rotates, the second cleaning brush is used to clean the first cleaning brush.

[0060] The present invention has at least the following beneficial effects:

[0061] 1. The combination of the cyclone separation component and the dust nozzle component of the present invention forms a cleaning module, which can automatically clean the filter screen, so that the handheld vacuum cleaner has the functional advantage of "self-cleaning", thereby eliminating the need for manual cleaning by the user.

[0062] 2. When using the cleaning module of the present invention, the dust collection nozzle assembly can be disassembled first, and the impurities in the dust collection chamber can be poured out. Then, the dust collection nozzle assembly can be reinstalled on the body through the second adapter end (when vacuuming, the dust collection nozzle assembly is installed on the body through the first adapter end). In this way, the first cleaning brush on the dust collection nozzle assembly is located in the dust collection chamber. When cleaning is started, the drive structure controls the filter to rotate, and the first cleaning brush is used to scrub the filter in all directions, thereby ensuring a cleaning effect.

[0063] 2.1 When the filter is brushed, the airflow generating assembly generates a second airflow, which flows from the exhaust port to the dust discharge chamber of the dust collection nozzle assembly, thereby discharging impurities in the dust collection chamber.

[0064] 3. When in use, the cleaning module of the present invention can also generate a third airflow within the dust collection chamber. This third airflow and the second airflow are used to further enhance the cleaning effect. When the airflow generating component is activated, the electromagnetic structure links the airflow generating component with the driving structure. When the driving structure is synchronously activated by the airflow generating component, airflow is introduced into the dust collection chamber from the air inlet and ejected through the one-way air nozzle to generate the third airflow.

[0065] 3.1 The flow direction of the third airflow of the present invention is opposite to the rotation direction of the filter, thereby further improving the cleaning effect of the filter.

[0066] 4. In order to ensure the scrubbing effect of the first cleaning brush, the present invention also provides a second cleaning brush. The second cleaning brush can be used to clean the first cleaning brush to prevent excessive dust residue on the first cleaning brush from affecting the scrubbing effect of the filter.

[0067] 5. In order to improve the scrubbing effect of the first cleaning brush, the present invention can also control the first cleaning brush to move back and forth longitudinally when the driving structure is started, thereby improving the scrubbing effect, and the moving first cleaning brush can also cause its own dust to fall off, thereby facilitating cleaning.

[0068] 6. The driving structure and air intake structure of the present invention are activated by the airflow generating component, and no special driver (such as a motor, etc.) is required to control the driving structure or the air intake structure. Therefore, the manufacturing cost of the handheld vacuum cleaner can be controlled.

[0069] In addition, other advantages of the present invention will be demonstrated in the embodiment section of the present invention, thereby making the beneficial effects of the present invention more significant and prominent. BRIEF DESCRIPTION OF THE DRAWINGS

[0070] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0071] Figure 1 This is a schematic structural diagram of a specific embodiment 1 of the present invention;

[0072] Figure 2 This is a schematic structural diagram of the dust collection nozzle assembly in specific embodiment 1 of the present invention;

[0073] Figure 3 for Figure 2 AA section view in;

[0074] Figure 4 This is a schematic structural diagram of the second mode of the cleaning module in specific embodiment 1 of the present invention;

[0075] Figure 5 for Figure 4 A magnified view of part A in FIG;

[0076] Figure 6 Schematic diagram of the structure of the joint between the lifting rod and the screw rod in the specific embodiment 1 of the present invention;

[0077] Figure 7 for Figure 4 A magnified view of part B in FIG;

[0078] Figure 8 for Figure 4 BB cross-sectional view in;

[0079] Figure 9 for Figure 8 The CC section view in the figure;

[0080] Figure 10 Schematic diagram of the flow of the third airflow in specific embodiment 1 of the present invention;

[0081] Figure 11 This is a schematic structural diagram of a specific embodiment 2 of the present invention;

[0082] Figure 12 for Figure 11 Enlarged view of part D in FIG;

[0083] Figure 13 for Figure 11 DD cross-sectional view in. DETAILED DESCRIPTION

[0084] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0085] Example 1

[0086] like Figure 1-10 As shown, the present invention discloses a handheld vacuum cleaner, comprising:

[0087] The body 10 has an airflow generating assembly, a power supply assembly 11 and a control button 12 for controlling the power on or off of the airflow generating assembly;

[0088] A dust collecting chamber is formed on the body 10;

[0089] An exhaust port 13 is formed on the body 10 and communicates with the dust collecting chamber. An air intake filter 13a covering the exhaust port 13 is provided on the body 10;

[0090] A cyclone separation assembly is provided in the dust collecting chamber and has a filter 4a capable of separating dust and airflow;

[0091] The dust collection nozzle assembly 2 is mounted on the machine body 10 and has a dust collection cavity communicated with the dust collecting cavity.

[0092] In this embodiment, the airflow generating assembly can generate a first airflow flowing from the dust suction chamber to the exhaust port or a second airflow flowing from the exhaust port to the dust suction chamber (or dust exhaust chamber). The airflow generating assembly of this embodiment is composed of a rotatable blade 141 and a motor 142 for driving the blade 141 to start. In this embodiment, the motor 142 and the blade 141 are driven by a pulley (in other embodiments, other mechanical transmission structures can also be used), and the motor 142 of this embodiment is a motor that can drive the blade to rotate clockwise and counterclockwise. Furthermore, the control button 12 controls the motor 142 to rotate clockwise to generate a first airflow, and the first airflow is used for dust suction. The cleaning button 15 is used to control the motor 142 to rotate counterclockwise to generate a second airflow for self-cleaning of the handheld vacuum cleaner.

[0093] In this embodiment, a cleaning module is also included which is formed in the integrated cavity and consists of a dust nozzle assembly and a cyclone separation assembly. That is to say, the cleaning module of this embodiment consists of a dust nozzle assembly and a cyclone separation assembly, and the more important one is the cyclone separation assembly. The cyclone separation assembly can realize the self-cleaning function, and the dust nozzle assembly can improve the self-cleaning effect of the handheld vacuum cleaner. At the same time, it also provides convenience for opening the dust collecting cavity, so that the impurities in the dust collecting cavity can be poured out.

[0094] More specifically, a dust outlet 20 (in the form of a Figure 1 For example, the dust outlet 20 is formed on the left side of the body 10), the dust nozzle assembly 2 is detachably arranged at the dust outlet 20 and can open or close the dust outlet 20. When the dust outlet 20 is opened, impurities in the dust collecting chamber can be poured out.

[0095] The dust collection nozzle assembly 2 has a cleaning end that can be located outside or inside the dust collection chamber and in contact with the filter 4a, and a first adapter end and a second adapter end that are adapted to the dust discharge port 20;

[0096] The cyclone separation assembly further comprises at least a drive structure and an air intake structure, wherein the drive structure is capable of controlling the filter screen 4a to rotate in a first direction, and the air intake structure is capable of generating a third airflow that flows around the filter screen 4a in a second direction; the drive structure, the air intake structure, and the dust nozzle assembly 2 have at least a first mode and a second mode;

[0097] In the first mode, the dust nozzle assembly is installed at the dust discharge port 20 through the first adapter end. When the airflow generating assembly generates the first airflow, the dust enters the dust collecting chamber from the dust suction chamber. After being separated by the filter 4a, the first airflow is discharged from the exhaust port 13; in the second mode, the dust nozzle assembly 2 is installed at the dust discharge port 20 through the second adapter end and causes the cleaning end to be located in the dust collecting chamber and contact the filter 4a. When the airflow generating assembly generates the second airflow and controls the rotation of the filter 4a through the driving structure, the second airflow enters the dust collecting chamber from the exhaust port 13, and at the same time cooperates with the air intake structure to form a third airflow that moves around the filter 4a in the dust collecting chamber to clean the filter 4a.

[0098] refer to Figure 2-3 In this embodiment, the dust nozzle assembly 2 includes:

[0099] The first closing body 21 and the second closing body 22 are integrally formed and arranged perpendicular to each other;

[0100] The dust collection chamber 210 is formed in the first closed body 21 and passes through both ends of the first closed body 21;

[0101] The dust exhaust chamber 220 is formed in the second enclosed body 22 and passes through the second enclosed body 22 and is independent of the dust collection chamber 210;

[0102] The first cleaning brush 223 is arranged on the first closed body 21; wherein, a groove 20a is formed on the inner wall of the dust exhaust port 20, and a first limit block 20b adapted to the cavity opening of the dust suction chamber 210 and the cavity opening of the dust exhaust chamber 220 is slidably connected in the groove 20a, and a first spring 20c is fixedly connected between the first limit block 20b and the groove 20a. In this embodiment, the cavity openings at both ends of the dust suction chamber are the second adapter ends of the dust suction nozzle assembly, and the cavity openings at both ends of the dust exhaust chamber 220 are the first adapter ends of the dust suction nozzle assembly.

[0103] In this embodiment, the first cleaning brush 223 is slidably connected to the first closing body 21 , and a second spring 24 is connected between the first cleaning brush 223 and the second closing body 22 .

[0104] refer to Figure 4 In this embodiment, the cyclone separation assembly includes:

[0105] The mounting body is composed of a first body 31 provided in the dust collecting chamber, and a second body 32 and a third body 33 rotatably connected to both ends of the first body 31, and divides the dust collecting chamber into a top chamber 40 for mounting the airflow generating assembly (the blades of the airflow generating assembly) and communicating with the exhaust port 13, a middle chamber 41 communicating with the dust suction chamber 210 and for mounting the filter 4a, and a bottom chamber 42 for mounting the air intake structure. In this embodiment, the second body 32 and the third body 33 are fixedly connected to the body 10, and the first body 31 is rotatably connected between the second body 32 and the third body 33;

[0106] The separation port 34 is formed on the first body 31 ; the communication port 35 is formed on the second body 32 ;

[0107] The exhaust cavity 36 is formed in the first body 31 and communicates with the top cavity 40 through the communication port 35 and communicates with the middle cavity 41 through the separation port 34;

[0108] The filter screen 4a is mounted on the first body 31 and is coaxially arranged with the first body 41 and covers the outside of the separation port 35. The filter screen 4a is cylindrical and located outside the first body 31 and is spaced apart from the first body 31.

[0109] The driving structure is installed in the bottom cavity 42; the air intake structure is installed in the bottom cavity 42 and has an air intake port set through the body.

[0110] In this embodiment, a driving cavity 50 is formed on the third body 33. A first gear 33a located in the driving cavity 50 is installed at the bottom of the first body 31. A second gear 52 rotatably engaged with the first gear 33a is provided in the driving cavity 50. The second gear 52 has a driven nut 52a. The second gear 52 and the driven nut 52a are coaxially arranged. An annular limiting rib 52b and an annular limiting groove (arranged on the top and bottom inner walls of the driving cavity 50) that are adapted to each other are provided between the driven nut 52a and the driving cavity 50. The driven nut 52a can rotate in the driving cavity through the annular limiting rib 52b without rising or falling. The driving structure includes:

[0111] The worm 53 is rotatably disposed in the bottom cavity 42 via a first rotating shaft 53a;

[0112] The electromagnetic structure is provided in the exhaust chamber 36 and is installed between the worm 53 and the blades 141 of the airflow generating assembly;

[0113] The worm wheel 54 is rotatably disposed in the bottom cavity 42 via a second rotating shaft 54a and cooperates with the worm 53;

[0114] The third gear 55 is mounted on the second rotating shaft 54a and is spaced apart from the worm gear 54 coaxially.

[0115] A lifting rod 56 is slidably connected to the wall of the bottom cavity 42, and one end of the lifting rod 56 is fixedly connected to the bottom of the bottom cavity 42 by a third spring 56a;

[0116] The rack 57 is mounted on the lifting rod 56 and meshes with the third gear 55; wherein, the lifting rod 56 is mounted with a screw rod that cooperates with the driven nut 52a. In this embodiment, the screw rod is composed of a first screw rod 581 and a second screw rod 582.

[0117] In this embodiment, a transmission cavity 56b is provided at the top of the lifting rod 56, and a plurality of limiting grooves 56c are provided circumferentially on the cavity wall of the transmission cavity 56b; the first screw and the second screw each include:

[0118] The screw body; the transmission body 58a is integrally formed with the screw body and is disposed in the transmission cavity;

[0119] The lifting shaft 58b is integrally formed with the screw body, is located in the middle cavity 41 and can abut against the cleaning end, and drives the cleaning end (first cleaning brush) to move up and down when the screw body moves up and down. That is to say, a lifting plate 58c that can abut against the first cleaning brush is provided on the lifting shaft 58b of the first screw.

[0120] Among them, a plurality of mounting grooves 58d are provided on the outer wall of the transmission body 58a, and a second limit block 58e is hinged in each mounting groove 58d, and a fourth spring 58f is provided between the second limit block 58e and the mounting groove 58d, which can drive the second limit block 58e to fit into the limit groove 56c.

[0121] In this embodiment: the electromagnetic structure includes:

[0122] The electromagnet 60 is mounted in the exhaust chamber 36 via a fifth spring 61 and includes a rotating body 62 connected to the worm 53 (the rotating body is rotatably mounted on the electromagnet 60 via a bearing 62a). The rotating body 62 includes an electromagnet 63, and a spring cavity 64 for mounting the fifth spring 61 is formed between the electromagnet 63 and the third body 33.

[0123] A transmission groove 65 is provided on the side of the rotating body 62 near the blades of the airflow generating assembly. A transmission rod is mounted on the blades of the airflow generating assembly, with one end extending into the transmission groove 65. A plurality of transmission limit grooves 65a are provided at the bottom of the transmission groove 65. The transmission rod is composed of an outer shaft 66 connected to the blades of the airflow generating assembly, a telescopic cavity 66a provided within the outer shaft 66, and an inner shaft 67 slidably connected to the telescopic cavity 66a.

[0124] One end of the inner shaft 67 has a transmission limit block 67a adapted to the transmission limit groove 65a, and a fifth spring 61 is connected between the inner shaft 67 and the bottom of the telescopic cavity 66a; when the electromagnet 63 is energized, the inner shaft 67 is attracted to move close to the transmission groove 65.

[0125] In this embodiment, the air intake structure includes:

[0126] The air inlet 70 is installed in the bottom cavity 42 and is coaxially arranged with each second rotating shaft 54a;

[0127] An air inlet cavity 71 is formed in the air inlet body 70 and has one end passing through the body 10 to form the air inlet;

[0128] The air delivery cavity 72 is formed on the air inlet cavity 70 and the third body 33 and connects the air inlet cavity 71 and the spring cavity 64;

[0129] The impeller 73 is mounted on the second rotating shaft 54a and is located at the connection between the air inlet chamber 71 and the air delivery chamber 72;

[0130] The air transmission cavity (the driving cavity 50 ) is formed on the third body 33 and communicates with the spring cavity 64 ;

[0131] The jet structure is installed in the middle cavity 41 and has a jet end connected to the air transmission cavity (driving cavity 50).

[0132] In this embodiment, the air jet structure is a one-way air jet nozzle 75 (communicated with the driving chamber) provided on the third body 33 , and the air jet direction of the one-way air jet nozzle 75 is inclined upward.

[0133] In this embodiment, the connection point between the spring cavity 64 and the driving structure is aligned with the meshing point between the first gear and the second gear.

[0134] refer to Figure 1-10 , the principle of the present invention is:

[0135] 1. Vacuuming principle: reference Figure 1-3 In this embodiment, the second adapter end (dust discharge chamber) of the dust suction nozzle assembly is installed at the dust discharge port position. At this time, the dust suction chamber is connected to the dust collecting chamber (middle chamber). The motor is started by controlling the control button, and the airflow generating assembly generates a first airflow, and dust is sucked through the dust suction chamber. When dust and gas enter the middle chamber, they are separated by the filter, and the airflow is discharged from the exhaust port, while the dust is controlled by the filter in the middle chamber to complete the dust collection.

[0136] It is worth mentioning that: in this mode, the first cleaning brush is located outside the body, so when vacuuming and when necessary, the first cleaning brush can also be used to assist the handheld vacuum cleaner to clean the indoor environment.

[0137] 2. Self-cleaning principle: reference Figure 4-10 In this embodiment, the first adapter end (dust suction chamber) of the dust suction nozzle assembly is installed at the dust outlet position (reference Figure 4 ), at this time, the first cleaning brush is located in the middle cavity and contacts the filter screen. During the cleaning process, the electromagnet is energized and attracts the inner shaft to move close to the transmission groove, and causes the transmission limit block on the inner shaft to be stuck in the transmission limit groove of the transmission groove (a plurality of transmission limit grooves are arranged at intervals at the bottom of the transmission groove), so that the blades of the airflow generating assembly can transmit power to the worm through the transmission rod when starting;

[0138] After the electromagnet is energized, the airflow generating assembly is started by the cleaning button control, and the motor is used to control the blades to rotate counterclockwise, thereby generating a second airflow, which enters through the exhaust port and into the exhaust cavity and passes through the filter from the inside out to clean the filter;

[0139] In addition, when the blade rotates, the worm is synchronously controlled to rotate through the transmission rod, and drives the worm wheels on both sides of the worm to rotate. When the worm wheels rotate, the second shaft rotates, completing the power transmission;

[0140] When the second shaft rotates, the third gear is controlled to rotate and controls the lifting rod to rise or fall by cooperating with the rack. Figure 4For example, when the second shaft rotates, the third gear on the left side of the worm rotates and cooperates with the rack to control the first screw to rise through the lifting rod. When the third gear on the left side is separated from the rack, the lifting rod is controlled to fall through the third spring. The same applies to the movement of the second screw on the right side of the worm.

[0141] In this embodiment, the first screw and the second screw always move in opposite directions, that is, when the first screw rises, the second screw falls, and vice versa, when the second screw rises, the first screw falls; when the first screw rises, the second gear is driven to rotate counterclockwise by cooperating with the first screw and the driven nut, and the first body and the filter screen are driven to rotate clockwise by the first gear. At this time, the second screw is in a descending state, so there will be an action of driving the right nut to rotate clockwise. However, since the first body rotates clockwise at this time, it will drive the right nut to rotate counterclockwise. Therefore, a one-way rotation structure is set between the lifting rod and the screw (refer to Figure 6 ), when the first screw rises and the second screw falls (or when the second screw rises and the first screw falls), the second screw can be rotated clockwise through the one-way rotation structure to ensure smooth lifting and lowering of the first screw and the second screw, and to ensure that the filter can always rotate clockwise.

[0142] When the first body rotates, the filter screen contacts the first cleaning brush and is scrubbed by the first cleaning brush to complete the cleaning. When the second shaft rotates, the impeller of the air intake structure is controlled to start and introduce external air into the filter screen. Figure 8-9 , the gas enters the air inlet chamber from the air inlet (a filter can be set at the general air inlet to prevent the introduction of impurities), and enters the spring chamber through the air supply chamber under the drive of the impeller. Because the airflow generated by the airflow generating assembly in this embodiment can flow from the top chamber, exhaust chamber, middle chamber and dust exhaust chamber, a negative pressure is formed in the exhaust chamber (that is, the top of the electromagnet), and the airflow from the air supply chamber into the spring chamber can lift the electromagnet and connect the driving chamber and the air supply chamber through the spring chamber. When the airflow enters the driving chamber, it is ejected through the one-way air nozzle. Figure 10 The airflow ejected from the one-way air nozzle flows obliquely from bottom to top, cleans the rotating filter 4a, and finally discharges the impurities from the dust exhaust cavity of the dust nozzle assembly, completing the self-cleaning work of the handheld vacuum cleaner.

[0143] It is worth mentioning that: in this embodiment, the connection point between the spring chamber and the drive chamber is aligned with the meshing point of the first gear and the second gear. Therefore, when the airflow enters the drive chamber from the spring chamber, the meshing point of the first gear and the second gear can be cleaned to prevent foreign matter from affecting the transmission effect of the two.

[0144] In this embodiment, when the first screw is lifted and lowered, the lifting shaft can be used to control the longitudinal reciprocating movement of the first cleaning brush. That is, when it is on the first screw, the first cleaning brush is driven to rise, and when the first screw is lowered, the first cleaning brush is controlled to fall by the second spring. The longitudinal reciprocating movement of the first cleaning brush can improve the cleaning effect of the filter.

[0145] Example 2 is different from Example 1 in that:

[0146] like Figure 11-13 As shown, in this embodiment: the jet structure includes:

[0147] The jet body 80 is installed in the middle cavity and is integrally formed with the body 10 and has a jet cavity (formed in the jet body 80, not shown in the figure);

[0148] The one-way air nozzle 81 is formed on the air jet body 80 and communicates with the air jet chamber, and can generate a third airflow tangential to the filter 4a; wherein the air jet chamber is communicated with the air transmission chamber (the driving chamber 50 in Example 1).

[0149] In this embodiment, the first body 31 is provided with a telescopic slot 90 on one side close to the filter screen 4a, and a second cleaning brush 91 is slidably connected to the telescopic slot 90. The second cleaning brush 91 is connected to the slot wall of the telescopic slot 90 via a sixth spring 92.

[0150] The first body 31 further includes a lifting cavity 93 formed on the first body 31 and communicating with each telescopic slot 90 . A control rod 94 having one end abutting (contacting) the electromagnet is slidably connected in the lifting cavity 93 . A plurality of protrusions 95 are fixedly connected to the control rod 94 .

[0151] refer to Figure 11-13 In order to ensure smooth jetting of the jet structure, the jet part of the jet structure is arranged on the side wall of the body (that is, the side wall of the middle cavity) in this embodiment. This prevents dust from accumulating at the bottom of the middle cavity and affecting the jetting. When jetting, the generated third airflow is tangent to the outer wall of the filter, which can better clean the filter. A more optimal setting is that the third airflow flows counterclockwise and the filter moves clockwise. The two are opposite to each other, which can further ensure the cleaning effect of the filter.

[0152] Moreover, in order to ensure the cleaning effect of the first cleaning brush on the filter, a second cleaning brush is also provided in this embodiment. When air enters the spring chamber, the electromagnet is lifted up, thereby driving the control rod to rise, and utilizing the protrusion to drive the brush bar of the second cleaning brush to pass through the filter. When the first body rotates, the second cleaning brush can be utilized to clean the first cleaning brush, thereby ensuring the cleaning effect of the first cleaning brush on the filter.

[0153] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A cleaning module for a handheld vacuum cleaner, characterized by: It consists of a dust collection nozzle assembly (2) of a handheld vacuum cleaner and a cyclone separation assembly; The dust collection nozzle assembly comprises a cleaning end capable of being located outside the dust collection chamber of the handheld vacuum cleaner or inside the dust collection chamber of the handheld vacuum cleaner and in contact with the filter screen (4a) of the handheld vacuum cleaner, and a first adapter end and a second adapter end adapted to the dust discharge port (20) of the handheld vacuum cleaner; The cyclone separation assembly further comprises at least a driving structure and an air intake structure, wherein the driving structure is capable of controlling the filter screen (4a) to rotate in a first direction, and the air intake structure is capable of generating a third airflow that flows around the filter screen (4a) in a second direction; the driving structure, the air intake structure and the dust nozzle assembly (2) have at least a first mode and a second mode; In the first mode, the dust collection nozzle assembly (2) is mounted on the dust discharge port (20) via the first adapter end, and when the airflow generating assembly generates a first airflow, dust enters the dust collection chamber from the dust collection chamber (210) of the dust collection nozzle assembly (2), and after being separated by the filter (4a), the first airflow is discharged from the exhaust port (13) of the handheld vacuum cleaner; In the second mode, the dust nozzle assembly (2) is mounted at the dust outlet (20) via the second adapter end so that the cleaning end is located in the dust collecting chamber and contacts the filter (4a). When the airflow generating assembly generates a second airflow and controls the filter (4a) to rotate via the driving structure, the second airflow enters the dust collecting chamber from the exhaust port (13) and simultaneously cooperates with the air intake structure to form a third airflow in the dust collecting chamber that moves around the filter (4a) and cleans the filter (4a).

2. The cleaning module of a handheld vacuum cleaner according to claim 1, characterized in that: The dust suction nozzle assembly (2) comprises: The first enclosing body (21) and the second enclosing body (22) are integrally formed and arranged perpendicular to each other; A dust collection chamber (210) is formed in the first closed body (21) and passes through both ends of the first closed body (21); A dust exhaust chamber (220) is formed in the second closed body (22), passes through the second closed body (22), and is independent of the dust suction chamber (210); A first cleaning brush (223) is provided on the first closed body (21); A groove (20a) is formed on the inner wall of the dust discharge port (20), and a first limiting block (20b) adapted to the cavity opening of the dust suction chamber (210) and the cavity opening of the dust discharge chamber (220) is slidably connected in the groove (20a), and a first spring (20c) is fixedly connected between the first limiting block (20b) and the groove (20a).

3. The cleaning module of a handheld vacuum cleaner according to claim 2, characterized in that: The first cleaning brush (223) is slidably connected to the first closing body (21), and a second spring (24) is connected between the first cleaning brush (223) and the second closing body (22).

4. A cleaning module for a handheld vacuum cleaner according to any one of claims 1 to 3, characterized in that: The cyclone separation assembly comprises: The mounting body is composed of a first body (31) disposed in the dust collecting chamber, and a second body (32) and a third body (33) rotatably connected to both ends of the first body (31), and the dust collecting chamber is divided into a top chamber (40) for mounting an airflow generating assembly and communicating with the exhaust port (13), a middle chamber (41) communicating with the dust collecting chamber (210) and for mounting a filter (4a), and a bottom chamber (42) for mounting the air intake structure; A separation port (34) is formed on the first body (31); A communication port (35) is formed on the second body (32); An exhaust cavity (36) is formed in the first body (31) and is in communication with the top cavity (40) through the communication port (35) and is in communication with the middle cavity (41) through the separation port (34); A filter screen (4a) is mounted on the first body and is coaxially arranged with the first body and covers the outside of the separation port; A driving structure is installed in the bottom cavity (42); The air intake structure is installed in the bottom cavity (42) and has an air intake port that passes through the machine body.

5. The cleaning module of a handheld vacuum cleaner according to claim 4, characterized in that: A driving cavity (50) is formed on the third body (33); a first gear (33a) located in the driving cavity (50) is installed at the bottom of the first body (31); a second gear (52) rotatably engaged with the first gear (33a) is rotatably provided in the driving cavity (50); the second gear (52) has a driven nut (52a); The driving structure includes: A worm (53) is rotatably disposed in the bottom cavity (42) via a first rotating shaft (53a); An electromagnetic structure is provided in the exhaust chamber (36) and is installed between the worm (53) and the airflow generating assembly; A worm wheel (54) is rotatably disposed in the bottom cavity (42) via a second rotating shaft (54a) and cooperates with the worm (53); a third gear (55) mounted on the second rotating shaft (54a); A lifting rod (56) is slidably connected to the wall of the bottom cavity (42), and one end of the lifting rod is fixedly connected to the bottom of the bottom cavity (42) by a third spring (56a); A rack (57) is mounted on the lifting rod (56) and meshes with the third gear (55); Wherein, a screw rod cooperating with the driven nut (52a) is installed on the lifting rod (56).

6. The cleaning module of a handheld vacuum cleaner according to claim 5, characterized in that: A transmission cavity (56b) is provided at the top end of the lifting rod (56), and a plurality of limiting grooves (56c) are circumferentially spaced apart on the cavity wall of the transmission cavity (56b); the screw comprises: Screw body; A transmission body (58a) is formed integrally with the screw body and is disposed in the transmission cavity (56b); A lifting shaft (58b) is formed integrally with the screw body, is located in the middle cavity (41), and is capable of abutting against the cleaning end, and drives the cleaning end to move up and down reciprocatingly when the screw body moves up and down; A plurality of mounting grooves (58d) are provided on the outer wall of the transmission body (58a), and a second limiting block (58e) is hinged in each mounting groove (58d), and a fourth spring (58f) is provided between the second limiting block (58e) and the mounting groove (58d) to drive the second limiting block (58e) to engage in the limiting groove (56c).

7. The cleaning module of a handheld vacuum cleaner according to claim 6, characterized in that: The electromagnetic structure comprises: The electromagnet (60) is installed in the exhaust chamber (36) via the fifth spring (61) and has a rotating body (62) connected to the worm (53), the rotating body (62) has an electromagnet (63), and a spring chamber (64) for installing the fifth spring (61) is formed between the electromagnet (63) and the third body (33); A transmission groove (65) is provided on a side of the rotating body (62) close to the airflow generating assembly; A transmission rod is mounted on the airflow generating assembly, and one end of the transmission rod extends into the transmission groove (65); The bottom of the transmission groove (65) is provided with a plurality of transmission limit grooves (65a), and the transmission rod is composed of an outer shaft (66) connected to the airflow generating assembly, a telescopic cavity (66a) provided in the outer shaft (66), and an inner shaft (67) slidably connected to the telescopic cavity (66a); One end of the inner shaft (67) has a transmission limit block (67a) adapted to the transmission limit groove (65a), and a fifth spring (61) is connected between the inner shaft (67) and the bottom of the telescopic cavity (66a); When the electromagnet (63) is energized, the inner shaft (67) is attracted to move close to the transmission groove (65).

8. The cleaning module of a handheld vacuum cleaner according to claim 7, characterized in that: The air intake structure comprises: The gas inlet (70) is installed in the bottom cavity (42) and is coaxially arranged with each second rotating shaft (54a); An air intake cavity (71) is formed in the air intake body (70), and one end of the cavity penetrates the body (10) and forms the air intake port; An air delivery cavity (72) is formed on the air inlet cavity (70) and the third body (33), and connects the air inlet cavity (71) and the spring cavity (64); An impeller (73) is mounted on the second rotating shaft (54a) and is located at the connection between the air inlet cavity (71) and the air delivery cavity (72); An air transmission cavity is formed on the third body (33) and communicates with the spring cavity (64); The jet structure is installed in the middle cavity (41) and has a jet end connected to the air transmission cavity.

9. The cleaning module of a handheld vacuum cleaner according to claim 8, characterized in that: The jet structure includes: A jet body (80) is installed in the middle cavity and is integrally formed with the body (10), and has a jet cavity; a one-way air jet nozzle (81) formed on the air jet body (80) and communicating with the air jet chamber, and capable of generating a third air flow tangential to the filter screen (4a); Wherein, the air injection cavity is communicated with the air transmission cavity.

10. The cleaning module of a handheld vacuum cleaner according to claim 9, characterized in that: The first body (31) is provided with a telescopic groove (90) on one side close to the filter screen (4a), and a second cleaning brush (91) is slidably connected to the telescopic groove (90), and the second cleaning brush (91) is connected to the groove wall of the telescopic groove (90) via a sixth spring (92); It also includes a lifting cavity (93) formed on the first body (31) and connected to each telescopic slot (90), a control rod (94) having one end abutting against the electromagnet (60) being slidably connected in the lifting cavity (93), and a plurality of protrusions (95) being fixedly connected to the control rod (94).

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