CN113143097A

CN113143097A - Handheld dust collector host structure

Info

Publication number: CN113143097A
Application number: CN202110503865.XA
Authority: CN
Inventors: 桑建君; 周荣
Original assignee: Ningbo Haiji Electric Appliance Co ltd
Current assignee: Ningbo Haiji Electric Appliance Co ltd
Priority date: 2021-05-10
Filing date: 2021-05-10
Publication date: 2021-07-23
Anticipated expiration: 2041-05-10
Also published as: CN113143097B

Abstract

The invention discloses a main machine structure of a handheld dust collector. It includes dirt cup subassembly, motor element, handle components and battery pack, dirt cup subassembly includes dirt cup body, filter element and dirt cup bottom, filter element installs in dirt cup body, dirt cup bottom install in the bottom of dirt cup body and with dirt cup body rotation connection, the top and the motor element of dirt cup body are connected, motor element's side is equipped with spacing fixture block, motor element installs at handle elements's top rear end and rotates with handle components to be connected, dirt cup body passes through dirt cup bottom and handle components's top front end joint, be equipped with on the handle components with spacing fixture block assorted spacing draw-in groove, handle elements's side is equipped with dirt cup hasp, dirt cup hasp is arranged in spacing draw-in groove and with spacing fixture block assorted joint, battery pack installs the bottom at handle components. The invention has the beneficial effects that: the service life is long, the stability is high, the safe reliability is high, the sealing effect is good, and the filtering effect is good.

Description

Handheld dust collector host structure

Technical Field

The invention relates to the technical field of dust collectors, in particular to a handheld dust collector main machine structure.

Background

The hand-held cleaner can remove dust, and is mainly characterized in that an electric exhaust fan is arranged at the head part of the hand-held cleaner. The rotating shaft of the exhaust fan is provided with an air impeller, after the air impeller is electrified, the exhaust fan can generate suction and pressure at the rotating speed of 500 circles per second, air is discharged at high speed under the action of the suction and the pressure, air in the dust suction part at the front end of the air fan continuously supplements the air in the air fan, so that instant vacuum is generated inside the dust collector, a negative pressure brush, a long connecting pipe, a bent pipe, a hose and a hose joint are formed by the air in the dust collector and the external atmospheric pressure to enter a dust filter bag, impurities such as dust are retained in the dust filter bag, and the air is purified by a filter disc and then is discharged from the tail part of the machine body. The hand-held dust collector can complete different cleaning works by matching with different parts, for example, the floor can be cleaned by matching with a floor brush, a sofa surface, a bed sheet, a curtain and the like can be cleaned by matching with a flat hairbrush, and dust at small corners and dust and dirt in some household appliances can be cleaned by matching with a small suction nozzle.

The dust cup is usually detached and installed independently when the dust cup is detached and installed in the conventional handheld dust collector, so that an independent switch and a lock catch piece are designed on the dust cup for matching use, the switch and the lock catch piece are exposed due to the structural design, and a raised part is arranged on the whole dust collector host, so that the corresponding switch and the lock catch piece are worn or damaged due to the action of external force easily, the service life of the dust cup is prolonged, and the appearance of the dust collector host is influenced.

Disclosure of Invention

The invention provides a main machine structure of a handheld dust collector, which aims to overcome the defects in the prior art and prolong the service life of a dust cup.

In order to achieve the purpose, the invention adopts the following technical scheme:

a handheld dust collector host structure comprises a dust cup assembly, a motor assembly, a handle assembly and a battery assembly, wherein the dust cup assembly comprises a dust cup body, a filtering assembly and a dust cup bottom cover, the filtering assembly is installed in the dust cup body, the dust cup bottom cover is installed at the bottom of the dust cup body and is rotationally connected with the dust cup body, the top of the dust cup body is connected with the motor assembly, a limiting clamping block is arranged on the side face of the motor assembly, the motor assembly is installed at the rear end of the top of the handle assembly and is rotationally connected with the handle assembly, the dust cup body is clamped with the front end of the top of the handle assembly through the dust cup bottom cover, a limiting clamping groove matched with the limiting clamping block is arranged on the handle assembly, a dust cup lock catch matched with the limiting clamping block is arranged at the position where the limiting clamping groove is arranged on the handle assembly, the motor assembly is matched with the limiting clamping block through the dust cup and is clamped with the handle assembly, the battery component is arranged at the bottom of the handle component.

When in use, firstly, the motor component is arranged on the handle component and is rotationally connected with the handle component, and the dust cup body is arranged on the motor component, so the dust cup body can rotate along with the rotation of the motor component, the motor component is provided with the limiting clamping block which is matched with the limiting clamping groove on the handle component, therefore, when the dust cup body is arranged on the handle component, the limiting clamping block is arranged in the limiting clamping groove, and the dust cup lock catch is designed in the limiting clamping groove to lock the limiting clamping block, so the dust cup body can be automatically locked by the dust cup lock catch when arranged on the handle component, and only the limiting clamping block is designed on the dust cup body, and the limiting clamping block is hidden on the handle component after the dust cup body is arranged, therefore, the whole exposed dust cup body has no other external components, and the whole dust cup body can not be influenced by other external environments, therefore, the purpose of prolonging the service life of the dust cup is achieved.

Preferably, the handle assembly comprises a handle support and an air inlet pipe, the bottom of the handle support is connected with the battery assembly, the front end of the top of the handle support is provided with an air inlet, a boss is arranged between the front end of the top of the handle support and the air inlet, the air inlet pipe is provided with a mounting support, the mounting support is mounted at the top of the handle support, the front end of the mounting support is provided with a convex plate matched with the boss, the front end of the air inlet pipe is butted with the air inlet on the handle support, the rear end of the air inlet pipe is sealed, the rear end side of the air inlet pipe is provided with an air outlet, the mounting support is provided with an opening corresponding to the air outlet, the side surface of the dust cup body is provided with an inlet corresponding to the opening, the handle support is provided with a lock catch hole matched with a lock catch of the dust cup, and the motor assembly is connected with the rear end of the mounting support, the outer edge of the dust cup bottom cover is arranged on the convex plate of the mounting support, the limiting clamping groove is arranged on the mounting support, and the dust cup lock catch is arranged on the handle support and corresponds to the position of the limiting clamping groove. The dust cup bottom cover is limited by the convex plate, and the dust cup lock catch in the limiting clamping groove is matched to lock the limiting clamping block, so that the whole dust cup body is prevented from generating relative displacement, and the stability of the whole device is ensured.

Preferably, the limiting clamping groove comprises a limiting groove and a positioning hole, the rear end of the mounting bracket is provided with a rotating groove, the rear end of the motor assembly is rotatably connected with the mounting bracket through the rotating groove, the limiting groove is arranged on the mounting bracket and is positioned between the rotating groove and the opening, the limiting groove is arranged at a position close to the opening, the positioning hole is arranged at the bottom of the limiting groove and is arranged at one side close to the opening, the positioning hole corresponds to the dust cup lock catch, the limiting clamping block of the motor assembly is clamped with the dust cup lock catch through the positioning hole in the limiting groove, a wire inlet hole I is arranged on the mounting bracket and is arranged between the rotating groove and the limiting groove, the rear end of the top of the handle bracket is provided with a button hole, a speed regulating switch is arranged in the button hole, and is detachably connected with the rear end of the top of the handle bracket through the button hole, the handle support is characterized in that a speed regulation circuit board is arranged inside the rear end of the top of the handle support and is inserted into the rear end of the top of the handle support, a speed regulation button is arranged on the speed regulation circuit board, the speed regulation switch is matched with the speed regulation button on the speed regulation circuit board, the speed regulation circuit board is electrically connected with a motor assembly through a first wire inlet hole, a switch hole is formed in the handle support, a power switch is arranged in the switch hole, and the battery assembly is electrically connected with the motor assembly through the power switch. The motor component can be conveniently installed and rotated through the design of the rotary groove; the motor component can be regulated through the design of the speed regulation switch and the speed regulation circuit board; through the design of the power switch, the power supply operation of the whole device is realized.

Preferably, the handle support is provided with a lock catch switch groove, the lock catch switch groove is internally provided with a lock catch hole, the position of the lock catch hole corresponds to the position of the switch hole in the front-back direction, the dust cup lock catch is arranged in the lock catch switch groove, one side surface of the dust cup lock catch is arranged in the lock catch hole, the other side surface of the dust cup lock catch is provided with a spring plate groove, the position of the spring plate groove corresponds to the position of the lock catch hole in the front-back direction, the spring plate groove is internally provided with a V-shaped spring plate, one side of the V-shaped spring plate is contacted with the lock catch switch groove, the other side of the V-shaped spring plate is contacted with the bottom of the spring plate groove, one side of the V-shaped spring plate, which is contacted with the lock catch switch groove, is provided with a limiting block, and one side surface of the spring plate groove, which faces towards the limiting block, is provided with a limiting hole, the limiting block is arranged in the limiting hole, a clamping head is arranged on one side surface of the dust cup lock catch facing the limiting clamping block, the clamping head is arranged in the positioning hole, a clamping hook is arranged on the clamping head, and the limiting clamping block is clamped with the clamping hook on the dust cup lock catch. Through the structural design of dirt cup hasp, on the one hand can effectual moving range and the route of injecing the dirt cup hasp, and on the other hand can realize the locking and the unblock of spacing fixture block and dirt cup hasp, simple structure and convenient operation.

Preferably, the mounting bracket is provided with a spring seat arranged between the first wire inlet hole and the limiting groove, the spring seat is arranged at a position close to the limiting groove, the spring seat is provided with a top block, a bump guide groove is arranged on the side surface of the spring seat, a bump guide rail matched with the bump guide groove is arranged on the side surface of the top block, the top block is arranged on the spring seat through the matching of the bump guide groove and the bump guide rail, a reset spring is arranged in the spring seat, one end of the reset spring is arranged at the bottom of the spring seat, the other end of the reset spring is connected with the top block, and the top block is contacted with the motor assembly. Through the structural design of kicking block for when dirt cup hasp unblock, motor element receives the effect of kicking block and is ejected, the dismantlement and the installation of the dirt cup subassembly of being convenient for.

Preferably, a rotating groove is formed in the edge of the bottom of the dust cup body, a guide piece is arranged at the bottom of the rotating groove, a first rotating shaft hole is formed in the opening of the rotating groove, a rotating seat is arranged on the outer edge of the inner side of the dust cup bottom cover, a cup bottom spring support matched with the rotating groove is arranged on the rotating seat, the cup bottom spring support comprises a cylindrical main body and a sheet-shaped baffle plate, the cup bottom spring support is integrally formed, rotating shafts are arranged at two ends of the cylindrical main body, a second rotating shaft hole is formed in the rotating seat, the rotating shafts on the cylindrical main body penetrate through the second rotating shaft hole on the rotating seat and then are installed in the first rotating shaft hole of the rotating groove, a spring groove is formed in the side surface of the cylindrical main body, a torsion spring is arranged in the spring groove, one end of the torsion spring is connected with the cylindrical main body, and the other end of the torsion spring is connected with the dust cup bottom cover, the lower end of the flaky baffle is connected with the side face of the columnar main body, and a guide groove matched with the guide sheet is formed in the middle of the upper end of the flaky baffle. Through the concrete connection structure design of dirt cup body and dirt cup bottom, can effectively inject the rotation range of dirt cup bottom on the one hand, on the other hand can realize that the return of dirt cup bottom seals the dirt cup body to ensure the reliability of whole dirt cup subassembly.

Preferably, the outer edge of the outer side of the dust cup bottom cover is provided with a guide groove, the guide groove and the rotating seat are symmetrically distributed by taking the dust cup bottom cover as a center, the position of the guide groove corresponds to the position of the limiting clamping block up and down, the depth of the guide groove is gradually reduced from the edge close to the dust cup bottom cover to the center close to the dust cup bottom cover, the inner side of the dust cup bottom cover is provided with a cup bottom sealing ring, the dust cup bottom cover is in sealing connection with the dust cup body through the cup bottom sealing ring, and a convex plate of the mounting bracket is provided with a guide block matched with the guide groove. The dust cup assembly can be quickly inserted and installed on the handle assembly through the design of the guide groove and the guide block, so that the dust cup assembly is convenient and quick; meanwhile, when the dust cup bottom cover is opened, the dust cup bottom cover faces the direction of the handle assembly, so that dust in the dust cup body can be prevented from diffusing forwards.

Preferably, the outer edge of the outer side of the dust cup bottom cover is provided with a guide groove, the position of the rotating seat and the position of the limiting clamping block are on the same straight line, the depth of the guide groove is gradually reduced from the edge close to the dust cup bottom cover to the center close to the dust cup bottom cover, the inner side of the dust cup bottom cover is provided with a cup bottom sealing ring, the dust cup bottom cover is in sealing connection with the dust cup body through the cup bottom sealing ring, and a convex plate of the mounting support is provided with a guide block matched with the guide groove. The dust cup assembly can be quickly inserted and installed on the handle assembly through the design of the guide groove and the guide block, so that the dust cup assembly is convenient and quick; when the dust cup bottom cover is opened, the dust cup bottom cover faces the direction deviating from the handle assembly, so that the dust in the dust cup body can be prevented from influencing the handle assembly, and meanwhile, the whole dust cup assembly is conveniently clamped on the handle assembly.

Preferably, the filter assembly comprises a filter screen, a filter element, a filter cone and a filter cone support, the filter cone support is arranged in the filter screen, the lower end of the filter cone is arranged on the filter cone support, the filter element is arranged at the upper end of the filter cone, the filter element is arranged at the inner side of the upper end of the filter screen and contacts with the inner side of the upper end of the filter screen, a side sealing ring is arranged at the outer side of the upper end of the filter screen, the filter screen is connected with the dust cup body through the side sealing ring in a sealing manner, a bottom sealing ring is arranged at the lower end of the filter screen, and the filter screen is connected with the dust cup bottom cover through the bottom sealing ring in a sealing manner. Through filtering component's design, can filter the secondary filter of filter core and filtration filter cone respectively to this internal object of dirt cup to improve whole device's filter effect.

Preferably, a semicircular groove is formed in the upper end face of the filtering filter element, a semicircular handle is arranged in the semicircular groove, two ends of the semicircular handle are rotatably connected with the filtering filter element and are arranged in the semicircular groove, and a handle block is arranged in the middle of the semicircular handle. The whole filtering component is conveniently extracted for maintenance and updating through the design of the semicircular handle and the handle block.

Preferably, the motor assembly comprises a dust collection motor, a motor housing cover, a motor front cover, a motor rear cover and an air outlet assembly, the dust collection motor is arranged in the motor housing cover, the motor housing cover is arranged between the motor front cover and the motor rear cover, a motor sealing ring is arranged between the front end of the motor housing cover and the front end of the motor front cover, the front end of the motor front cover is connected with the top of the dust cup body, the limiting clamping block comprises a limiting seat and a limiting stop block, the limiting seat is arranged on the outer side of the front end of the motor front cover and matched with the limiting groove, the limiting stop block is arranged on the limiting seat, the limiting stop block is matched and clamped with a clamping hook on a clamping head, the rear end of the motor front cover is connected with the front end of the motor rear cover, the rear end of the motor rear cover is connected with the air outlet assembly, a rotary seat matched with the rotary groove is arranged on the outer side of the rear end of the motor rear cover, the rotary base is provided with a rotating shaft, a shaft hole for installing the rotating shaft is formed in the rotating groove, the rotary base is installed in the rotating groove through the rotating shaft, and the rear cover of the motor is provided with a wire inlet hole II corresponding to the wire inlet hole I. Through the cooperation design of limit stop and spacing seat, injecing motor element that can be better ensures the fail safe nature of whole device.

Preferably, the air outlet assembly comprises an air outlet cover plate and an air outlet support, one end of the air outlet support is installed at the rear end of the motor rear cover, the other end of the air outlet support is installed in the air outlet cover plate, the cross section of the air outlet cover plate is U-shaped, air outlet meshes are arranged on the side face of the air outlet cover plate, a HEPA assembly is arranged on the inner side of the air outlet cover plate, the HEPA assembly is installed at the other end of the air outlet support, and a support sealing ring is arranged between the air outlet support and the motor rear cover. Through the structural design of air-out subassembly, can ensure that whole air-out direction is more dispersion and the air-out is more pure environmental protection health.

Preferably, the HEPA component comprises a HEPA bracket, an air-out HEPA and a HEPA frame cover, the diameter of the lower end of the HEPA bracket is larger than that of the upper end of the HEPA bracket, the air-out HEPA is arranged on the side surface of the HEPA bracket, the HEPA frame cover is arranged at the upper end of the HEPA bracket, and the air-out HEPA is arranged between the HEPA frame cover and the lower end of the HEPA bracket. Through the design of the HEPA component, the replacement of the air-out HEPA can be facilitated.

Preferably, the battery pack comprises a battery box upper cover, a battery box lower cover and a battery cell support, the battery cell support is installed between the battery box upper cover and the battery box lower cover, a through hole is formed in the battery box upper cover, a battery button is arranged in the through hole, the battery button is connected with a battery lock catch, the battery button and the battery lock catch are installed in the battery box upper cover and are arranged between the battery box upper cover and the battery cell support, and the battery box upper cover is connected with the bottom of the handle support in a clamping mode through the battery lock catch. Through battery pack's design, can make things convenient for battery pack's dismantlement and installation, can dismantle between battery case upper cover and the battery case lower cover simultaneously and be connected for electric core support can follow and take out and change corresponding battery.

As preferred, battery hasp on be equipped with tapered end and hasp groove, tapered end and battery hasp mutually perpendicular be connected, the hasp groove arrange in and be close to junction one side of battery hasp and tapered end, the hasp inslot be equipped with the direction inclined plane, the battery button on be equipped with hasp groove assorted hasp head, the hasp overhead be equipped with direction inclined plane assorted wedge face, the front end of battery case upper cover is equipped with the lockhole, the tapered end arrange in the lockhole, the rear end of battery case upper cover is equipped with spacing hole, handle support's bottom be equipped with spacing corresponding stopper in hole and with the corresponding locking piece of lockhole, locking piece and tapered end joint. Through the structural design of the battery lock catch and the battery button, the battery assembly and the handle assembly can be conveniently detached and installed.

Preferably, the filter screen cover comprises a filter element frame and a dust outlet cylinder, the filter element frame is cylindrical, the diameter of the filter element frame is larger than that of the dust outlet cylinder, the filter element frame and the dust outlet cylinder are integrally formed, the side surface of the filter element frame is hollowed, a filter element net is arranged in the hollowed side surface of the filter element frame, the filter element, a filter cone and a filter cone support are all arranged in the filter element frame, the filter element net corresponds to the filter cone, the filter element is arranged at one end of the filter element frame, the filter cone support is arranged at the other end of the filter element frame, the other end of the filter element frame is connected with one end of the dust outlet cylinder, a side sealing ring is arranged at the outer side of one end of the filter element frame, a bottom sealing ring is arranged at the outer side of the other end of the dust outlet cylinder, and the outer edge of the joint of the filter element frame and the dust outlet cylinder is provided with a circular guide flange, the guide flanging inclines towards the dust outlet cylinder. The filter element net and the filter cone on the filter element frame are matched for use, so that the dust collector firstly carries out primary filtration through the filter cone and then carries out secondary filtration through the filter element net when in use, and the dust collection effect is greatly improved; meanwhile, the dust can be guided to be gathered towards the bottom of the dust cup through the guide flanging, so that the dust is convenient to treat.

The invention has the beneficial effects that: the improved dust collector has the advantages of long service life, high stability, simple structure, convenience in operation, convenience in installation, disassembly and rotation, reliability in movement, high safety and reliability, good sealing effect, good filtering effect, convenience in later-stage updating and maintenance, and greatly improved dust collection effect through secondary filtering.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of an exploded structure of the handle assembly;

FIG. 3 is a schematic view of the structure of the handle bracket;

FIG. 4 is an exploded view of the dirt cup assembly;

FIG. 5 is a schematic view of the bottom cover of the dirt cup;

FIG. 6 is a schematic structural view of a filter assembly;

FIG. 7 is an exploded view of the motor assembly;

FIG. 8 is a schematic structural view of the motor assembly and dirt cup assembly;

fig. 9 is an exploded view of the battery assembly;

fig. 10 is a schematic view of the mounting bracket and air inlet duct;

FIG. 11 is a schematic view of a filter screen;

fig. 12 is a schematic view of the structure of fig. 10 after the top block is attached at a.

In the figure: 1. the dust cup comprises a motor component, 2, a dust cup component, 3, a handle component, 4, a battery component, 5, a mounting bracket, 6, a rotating groove, 7, a wire inlet hole I, 8, a positioning hole, 9, a spring seat, 10, a bump guide groove, 11, an air outlet, 12, an opening, 13, a limit flanging, 14, a speed regulating switch, 15, a speed regulating circuit board, 16, a lock catch switch groove, 17, a limit groove, 18, an air inlet pipe, 19, a convex plate, 20, a power switch, 21, a button hole, 22, a dust cup lock catch, 23, a switch hole, 24, a handle bracket, 25, a spring sheet groove, 26, a boss, 27, an air inlet, 28, a limit hole, 29, a clamping hook, 30, a lock catch hole, 31, a dust cup body, 32, a guide sheet, 33, a rotating groove, 34, a filtering filter core and 35, a filtering cone, 36. a filter cone support, 37, a side sealing ring, 38, a filter screen cover, 39, a bottom sealing ring, 40, a dust cup bottom cover, 41, a rotating seat, 42, a spring groove, 43, a guide groove, 44, a sheet baffle, 45, a columnar main body, 46, a rotating shaft, 47, a cup bottom sealing ring, 48, a guide groove, 49, a semicircular groove, 50, a semicircular handle, 51, a handle block, 52, an air outlet cover plate, 53, a sea handkerchief frame cover, 54, an air outlet mesh, 55, a sea handkerchief support, 56, an air outlet support, 57, a motor rear cover, 58, a motor housing cover, 59, a dust suction motor, 60, a motor front cover, 61, a rotating seat, 62, a rotating shaft, 63, a second wire inlet hole, 64, a limiting seat, 65, a limiting block, 66, an inlet, 67, a second rotating shaft hole, 68, a guide block, 69. the novel dust removal device comprises a limiting hole, 70 parts of a battery box upper cover, 71 parts of a locking hole, 72 parts of a battery cell support, 73 parts of a through hole, 74 parts of a battery lock catch, 75 parts of a lock catch groove, 76 parts of a lock head, 77 parts of a lock catch head, 78 parts of a battery button, 79 parts of a battery box lower cover, 80 parts of a clamp head, 81 parts of a V-shaped elastic sheet, 82 parts of a cup bottom spring support, 83 parts of a rotating shaft hole I, 84 parts of a filter element support, 85 parts of a filter element net, 86 parts of a guiding flange, 87 parts of a dust outlet cylinder, 88 parts of a top block and 89 parts of a bump guide rail.

Detailed Description

The invention is further described with reference to the following figures and detailed description.

In the embodiment shown in fig. 1, a handheld vacuum cleaner host structure comprises a dust cup assembly 2, a motor assembly 1, a handle assembly 3 and a battery assembly 4, wherein the dust cup assembly 2 comprises a dust cup body 31, a filter assembly and a dust cup bottom cover 40, the filter assembly is installed in the dust cup body 31, the dust cup bottom cover 40 is installed at the bottom of the dust cup body 31 and rotatably connected with the dust cup body 31, the top of the dust cup body 31 is connected with the motor assembly 1, a limit clamping block is arranged on a side surface of the motor assembly 1, the motor assembly 1 is installed at the rear end of the top of the handle assembly 3 and rotatably connected with the handle assembly 3, the dust cup body 31 is clamped with the front end of the top of the handle assembly 3 through the dust cup bottom cover 40, a limit clamping groove matched with the limit clamping block is arranged on the handle assembly 3, a dust cup 22 locked with the limit clamping block is arranged on the handle assembly 3 and positioned at the limit clamping groove, motor element 1 matches and connects with handle component 3 joint through dirt cup hasp 22 and spacing fixture block mutually, and battery pack 4 installs the bottom at handle component 3.

As shown in fig. 2 and 10, the handle assembly 3 includes a handle support 24 and an air inlet pipe 18, the bottom of the handle support 24 is connected with the battery assembly 4, the front end of the top of the handle support 24 is provided with an air inlet 27, a boss 26 is arranged between the front end of the top of the handle support 24 and the air inlet 27, the air inlet pipe 18 is provided with a mounting support 5, the mounting support 5 is mounted on the top of the handle support 24, the front end of the mounting support 5 is provided with a convex plate 19 matched with the boss 26, the front end of the air inlet pipe 18 is butted with the air inlet 27 on the handle support 24, the rear end of the air inlet pipe 18 is sealed, the rear end side of the air inlet pipe 18 is provided with an air outlet 11, the mounting support 5 is provided with an opening 12 corresponding to the air outlet 11, the side of the dust cup body 31 is provided with an inlet 66 corresponding to the opening 12, the handle support 24 is provided with a latch hole 30 matched with the latch 22 of the dust cup, the motor assembly 1 is connected with the rear end of the mounting support 5, the outer edge of the dust cup bottom cover 40 is arranged on the convex plate 19 of the mounting bracket 5, the limiting clamping groove is arranged on the mounting bracket 5, and the dust cup lock catch 22 is arranged on the handle bracket 24 and corresponds to the position of the limiting clamping groove.

As shown in fig. 2, 10 and 12, the limiting clamping groove comprises a limiting groove 17 and a positioning hole 8, a rotating groove 6 is arranged at the rear end of the mounting bracket 5, the rear end of the motor assembly 1 is rotatably connected with the mounting bracket 5 through the rotating groove 6, the limiting groove 17 is arranged on the mounting bracket 5 and is positioned between the rotating groove 6 and the opening 12, the limiting groove 17 is arranged at a position close to the opening 12, the positioning hole 8 is arranged at the bottom of the limiting groove 17 and is arranged at one side close to the opening 12, the positioning hole 8 corresponds to the dust cup lock catch 22, a limiting clamping block of the motor assembly 1 is clamped with the dust cup lock catch 22 through the positioning hole 8 in the limiting groove 17, a wire inlet hole I7 is arranged on the mounting bracket 5 and between the rotating groove 6 and the limiting groove 17, a button hole 21 is arranged at the rear end of the top of the handle bracket 24, a speed regulating switch 14 is arranged in the button hole 21, and is detachably connected with the rear end of the top of the handle bracket 24 through the button hole 21, the inside speed governing circuit board 15 that is equipped with of top rear end of handle support 24, inside the top rear end of handle support 24 was pegged graft to speed governing circuit board 15, be equipped with speed governing button on the speed governing circuit board 15, speed governing switch 14 and the speed governing button phase-match on the speed governing circuit board 15, speed governing circuit board 15 is connected with motor element 1 electricity through entrance hole 7, be equipped with switch hole 23 on the handle support 24, be equipped with switch 20 in the switch hole 23, battery pack 4 is connected with motor element 1 electricity through switch 20. Installing support 5 is last and arrange in and be equipped with spring holder 9 between entrance hole 7 and the spacing recess 17, spring holder 9 is arranged in and is close to position department at spacing recess 17 place, be equipped with kicking block 88 on the spring holder 9, the side of spring holder 9 is equipped with lug guide slot 10, the side of kicking block 88 be equipped with lug guide slot 10 assorted lug guide rail 89, kicking block 88 passes through lug guide slot 10 and installs on spring holder 9 with lug guide rail 89's cooperation, be equipped with reset spring in the spring holder 9, reset spring's one end is installed in the bottom of spring holder 9, reset spring's the other end is connected with kicking block 88, kicking block 88 contacts with motor element 1.

As shown in fig. 3, a latch switch slot 16 is provided on the handle bracket 24, a latch hole 30 is provided in the latch switch slot 16, the position of the latch hole 30 corresponds to the position of the switch hole 23, the dust cup latch 22 is disposed in the latch switch slot 16, one side surface of the dust cup latch 22 is disposed in the latch hole 30, a spring slot 25 is provided on the other side surface of the dust cup latch 22, the position of the spring slot 25 corresponds to the position of the latch hole 30, a V-shaped spring 81 is provided in the spring slot 25, one side of the V-shaped spring 81 contacts with the latch switch slot 16, the other side of the V-shaped spring 81 contacts with the bottom of the spring slot 25, a limit flange 13 is provided on the side of the V-shaped spring 81 contacting with the latch switch slot 16, a limit block is provided on the side of the V-shaped spring 81 contacting with the spring slot 25, a limit hole 28 is provided on the side of the spring slot 25 facing the limit block, the limiting block is arranged in the limiting hole 28, a clamping head 80 is arranged on one side surface of the dust cup lock catch 22 facing the limiting clamping block, the clamping head 80 is arranged in the positioning hole 8, a clamping hook 29 is arranged on the clamping head 80, and the limiting clamping block is clamped with the clamping hook 29 on the dust cup lock catch 22.

As shown in fig. 4 and 5, a rotating groove 33 is disposed at the bottom edge of the dust cup body 31, a guide piece 32 is disposed at the bottom of the rotating groove 33, a first rotating shaft hole 83 is disposed at the opening 12 of the rotating groove 33, a rotating base 41 is disposed at the inner outer edge of the dust cup bottom cover 40, a cup bottom spring support 82 matched with the rotating groove 33 is disposed on the rotating base 41, the cup bottom spring support 82 includes a cylindrical main body 45 and a sheet baffle 44, the cup bottom spring support 82 is integrally formed, a rotating shaft 46 is disposed at both ends of the cylindrical main body 45, a second rotating shaft hole 67 is disposed on the rotating base 41, the rotating shaft 46 on the cylindrical main body 45 passes through the second rotating shaft hole 67 on the rotating base 41 and then is installed in the first rotating shaft hole 83 of the rotating groove 33, a spring groove 42 is disposed at the side of the cylindrical main body 45, a torsion spring is disposed in the spring groove 42, one end of the torsion spring is connected to the cylindrical main body 45, and the other end of the torsion spring is connected to the dust cup bottom cover 40, the lower end of the sheet-shaped baffle 44 is connected with the side surface of the columnar main body 45, and the middle of the upper end of the sheet-shaped baffle 44 is provided with a guide groove 43 matched with the guide sheet 32. The outer edge of the outer side of the dust cup bottom cover 40 is provided with a guide groove 48, the guide groove 48 and the rotating seat 41 are symmetrically distributed by taking the dust cup bottom cover 40 as the center, the position of the guide groove 48 corresponds to the position of the limiting clamping block up and down, the depth of the guide groove 48 is gradually reduced from the edge close to the dust cup bottom cover 40 to the center close to the dust cup bottom cover 40, the inner side of the dust cup bottom cover 40 is provided with a cup bottom sealing ring 47, the dust cup bottom cover 40 is hermetically connected with the dust cup body 31 through the cup bottom sealing ring 47, and the convex plate 19 of the mounting bracket 5 is provided with a guide block 68 matched with the guide groove 48. In this embodiment, there is another structure, which is specifically as follows: the outer edge of the outer side of the dust cup bottom cover 40 is provided with a guide groove 48, the position of the rotating seat 41 and the position of the limiting fixture block are on the same straight line, the depth of the guide groove 48 is gradually reduced from the edge close to the dust cup bottom cover 40 to the center close to the dust cup bottom cover 40, the inner side of the dust cup bottom cover 40 is provided with a cup bottom sealing ring 47, the dust cup bottom cover 40 is hermetically connected with the dust cup body 31 through the cup bottom sealing ring 47, and the convex plate 19 of the mounting bracket 5 is provided with a guide block 68 matched with the guide groove 48.

As shown in fig. 4 and 6, the filter assembly includes a filter screen 38, a filter element 34, a filter cone 35 and a filter cone support 36, the filter cone support 36 is installed in the filter screen 38, the lower end of the filter cone 35 is installed on the filter cone support 36, the filter element 34 is installed at the upper end of the filter cone 35, the filter element 34 is disposed at the inner side of the upper end of the filter screen 38 and contacts with the inner side of the upper end of the filter screen 38, a side seal ring 37 is disposed at the outer side of the upper end of the filter screen 38, the filter screen 38 is hermetically connected with the interior of the dust cup body 31 through the side seal ring 37, a bottom seal ring 39 is disposed at the lower end of the filter screen 38, and the filter screen 38 is hermetically connected with the dust cup bottom cover 40 through the bottom seal ring 39. The upper end face of the filter element 34 is provided with a semi-circular groove 49, a semi-circular handle 50 is arranged in the semi-circular groove 49, two ends of the semi-circular handle 50 are rotatably connected with the filter element 34 and are arranged in the semi-circular groove 49, and a handle block 51 is arranged in the middle of the semi-circular handle 50.

As shown in fig. 11, the filter screen cover 38 includes a filter element frame 84 and a dust outlet cylinder 87, the filter element frame 84 is cylindrical, the diameter of the filter element frame 84 is larger than that of the dust outlet cylinder 87, the filter element frame 84 and the dust outlet cylinder 87 are integrally formed, the side surface of the filter element frame 84 is hollowed out, a filter element net 85 is arranged in the hollowed side surface of the filter element frame 84, the filter element 34, the filter cone 35 and the filter cone support 36 are all arranged in the filter element frame 84, the filter element net 85 corresponds to the filter cone 35, the filter element 34 is arranged at one end of the filter element frame 84, the filter cone support 36 is arranged at the other end of the filter element frame 84, the other end of the filter element frame 84 is connected with one end of the dust outlet cylinder 87, the side sealing ring 37 is arranged at the outer side of the filter element 34 arranged on the filter element frame 84, the bottom sealing ring 39 is arranged at the outer side of the dust outlet cylinder 87, an annular guiding flange 86 is arranged at the outer edge of the connection part of the filter element frame 84 and the dust outlet cylinder 87, the guide flange 86 is inclined toward the dust outlet pipe 87.

As shown in fig. 7 and 8, the motor assembly 1 includes a dust collection motor 59, a motor housing cover 58, a motor front cover 60, a motor rear cover 57 and an air outlet assembly, the dust collection motor 59 is installed in the motor housing cover 58, the motor housing cover 58 is installed between the motor front cover 60 and the motor rear cover 57, a motor sealing ring is disposed between the front end of the motor housing cover 58 and the front end of the motor front cover 60, the front end of the motor front cover 60 is connected with the top of the dust cup body 31, the limit block includes a limit seat 64 and a limit stop 65, the limit seat 64 is installed outside the front end of the motor front cover 60 and is matched with the limit groove 17, the limit stop 65 is disposed on the limit seat 64, the limit stop 65 is matched and clamped with the clamping hook 29 on the clamping head 80, the rear end of the motor front cover 60 is connected with the front end of the motor rear cover 57, the rear end of the motor rear cover 57 is connected with the air outlet assembly, a rotary seat 61 matched with the rotary groove 6 is disposed outside the rear end of the motor rear cover 57, the rotating base 61 is provided with a rotating shaft 62, a shaft hole for installing the rotating shaft 62 is formed in the rotating groove 6, the rotating base 61 is installed in the rotating groove 6 through the rotating shaft 62, and the motor rear cover 57 is provided with a wire inlet hole two 63 corresponding to the wire inlet hole one 7. The air outlet assembly comprises an air outlet cover plate 52 and an air outlet support 56, one end of the air outlet support 56 is installed at the rear end of the motor rear cover 57, the other end of the air outlet support 56 is installed in the air outlet cover plate 52, the cross section of the air outlet cover plate 52 is U-shaped, air outlet mesh holes 54 are formed in the side face of the air outlet cover plate 52, a HEPA assembly is arranged on the inner side of the air outlet cover plate 52 and installed at the other end of the air outlet support 56, and a support sealing ring is arranged between the air outlet support 56 and the motor rear cover 57. The HEPA component comprises a HEPA bracket 55, an air-out HEPA and a HEPA bracket cover 53, the diameter of the lower end of the HEPA bracket 55 is larger than that of the upper end of the HEPA bracket 55, the air-out HEPA is arranged on the side surface of the HEPA bracket 55, the HEPA bracket cover 53 is arranged at the upper end of the HEPA bracket 55, and the air-out HEPA is arranged between the HEPA bracket cover 53 and the lower end of the HEPA bracket 55.

As shown in fig. 9, the battery assembly 4 includes a battery box upper cover 70, a battery box lower cover 79 and a battery cell support 72, the battery cell support 72 is installed between the battery box upper cover 70 and the battery box lower cover 79, a through hole 73 is formed in the battery box upper cover 70, a battery button 78 is arranged in the through hole 73, the battery button 78 is connected with a battery lock 74, the battery button 78 and the battery lock 74 are installed in the battery box upper cover 70 and are arranged between the battery box upper cover 70 and the battery cell support 72, and the battery box upper cover 70 is clamped with the bottom of the handle support 24 through the battery lock 74. The battery lock 74 is provided with a lock head 76 and a lock groove 75, the lock head 76 is perpendicular to the battery lock 74, the lock groove 75 is arranged at one side close to the joint of the battery lock 74 and the lock head 76, a guide inclined plane is arranged in the lock groove 75, a lock head 77 matched with the lock groove 75 is arranged on the battery button 78, a wedge-shaped surface matched with the guide inclined plane is arranged on the lock head 77, a lock hole 71 is arranged at the front end of the battery box upper cover 70, the lock head 76 is arranged in the lock hole 71, a limiting hole 69 is arranged at the rear end of the battery box upper cover 70, a limiting block corresponding to the limiting hole 69 and a lock block corresponding to the lock hole 71 are arranged at the bottom of the handle support 24, and the lock block is connected with the lock head 76 in a clamping manner.

The specific operation steps of the dust collector (HJC-2008) are as follows:

firstly, when the handle component 3 is installed, firstly, the power switch 20, the speed regulation switch 14 and the speed regulation circuit board 15 are installed on the handle support 24, the dust cup lock catch 22 is installed on the handle support 24 and at a position corresponding to the position of the upper limit clamping groove of the installing support 5, and then the installing support 5 is installed at the top of the handle support 24, so that the dust cup lock catch 22 is arranged in the limit clamping groove of the handle support 24.

Secondly, when the motor assembly 1 is installed, firstly, the dust absorption motor 59 is installed in the motor housing 58, the motor housing 58 is installed in the motor front cover 60 and the motor rear cover 57, the HEPA bracket 55 is provided with the air outlet HEPA and then fixed by the HEPA bracket cover 53, then the HEPA assembly is arranged in the air outlet cover plate 52 and limited by the air outlet bracket 56, then the air outlet bracket 56 is arranged on the motor rear cover 57 and connected with the motor rear cover 57 through the air outlet cover plate 52, finally the rotary seat 61 outside the motor rear cover 57 is installed in the rotary groove 6 of the installation bracket 5 through the rotary shaft 62, meanwhile, the limiting seat 64 outside the motor front cover 60 is arranged in the limiting groove 17 of the installation bracket 5 and limited by the limiting stopper 65 on the limiting seat 64 and the positioning hole 8 in the limiting groove 17.

Thirdly, when the dust cup component 2 is installed, firstly, a filter cone bracket 36, a filter cone 35 and a filter element 34 are sequentially installed in a filter screen cover 38, the filter screen cover 38 is sealed with the inner wall of the dust cup body 31 through a side sealing ring 37, then the upper end of the dust cup body 31 is arranged on the motor front cover 60, then the dust cup bottom cover 40 is arranged in the rotating groove 33 of the dust cup body 31 through the cup bottom spring support 82 on the rotating seat 41, at this time, the sheet baffle 44 on the cup bottom spring support 82 is matched with the guide sheet 32 in the rotating groove 33 for limiting, the dust cup bottom cover 40 is connected with the inner wall of the dust cup body 31 in a sealing way through the cup bottom sealing ring 47, meanwhile, the filter screen cover 38 is connected with the dust cup bottom cover 40 in a sealing way through the bottom sealing ring 39, and finally, the dust cup bottom cover 40 is covered on the bottom of the dust cup body 31 in a sealing way, the guide slots 48 on the outer edge of the dirt cup bottom cover 40 mate with the guide blocks 68 on the raised plate 19 of the mounting bracket 5. At this time, the top block 88 on the mounting bracket 5 is pressed by the dust cup body 31 and moves toward the inside of the spring seat 9, so that the return spring is compressed in the spring seat 9, and meanwhile, the limit stop 65 on the limit seat 64 is clamped with the hook 29 on the dust cup lock catch 22. When dismantling dirt cup subassembly 2, only need press the dirt cup hasp 22 in the hasp hole 30 and make dirt cup hasp 22 move forward, V type shell fragment 81 is compressed, make trip 29 on the dirt cup hasp 22 separate with spacing dog 65 on the spacing seat 64, and because after dirt cup body 31 has lost the pulling force of spacing dog, reset spring in the spring holder 9 resets, leave installing support 5 with dirt cup body 31 top through kicking block 88, simultaneously dirt cup bottom cover 40 also separates with the flange 19 on the installing support 5, just afterwards can dismantle dirt cup body 31 from motor front shroud 60.

Fourthly, when installing the battery pack 4, firstly, the battery is installed on the battery cell support 72, the battery cell support 72 is installed between the upper battery box cover 70 and the lower battery box cover 79, and then the battery cell support is installed at the bottom of the handle support 24 through the limiting hole 69 of the upper battery box cover 70, and meanwhile, the lock head 76 in the lock hole 71 of the upper battery box cover 70 is clamped with the bottom of the handle support 24. When the battery assembly 4 is disassembled, only the battery button 78 needs to be pressed, the locking head 77 on the battery button 78 drives the battery lock 74 to move downwards along with the cooperation of the wedge-shaped surface and the guide inclined surface, so that the locking head 76 on the battery lock 74 also moves downwards to be separated from the handle bracket 24, and then the battery assembly 4 is taken out from the limiting hole 69.

Claims

1. A host structure of a handheld dust collector is characterized by comprising a dust cup assembly (2), a motor assembly (1), a handle assembly (3) and a battery assembly (4), wherein the dust cup assembly (2) comprises a dust cup body (31), a filtering assembly and a dust cup bottom cover (40), the filtering assembly is installed in the dust cup body (31), the dust cup bottom cover (40) is installed at the bottom of the dust cup body (31) and is rotatably connected with the dust cup body (31), the top of the dust cup body (31) is connected with the motor assembly (1), a limiting clamping block is arranged on the side surface of the motor assembly (1), the motor assembly (1) is installed at the rear end of the top of the handle assembly (3) and is rotatably connected with the handle assembly (3), and the dust cup body (31) is clamped with the front end of the top of the handle assembly (3) through the dust cup bottom cover (40), handle component (3) on be equipped with spacing fixture block assorted spacing draw-in groove, handle component (3) on and arrange the position department at spacing draw-in groove place and be equipped with spacing fixture block matched with dirt cup hasp (22), motor element (1) match and handle component (3) joint through dirt cup hasp (22) and spacing fixture block, battery pack (4) install the bottom in handle component (3).

2. The main structure of the handheld vacuum cleaner as claimed in claim 1, wherein the handle assembly (3) includes a handle bracket (24) and an air inlet pipe (18), the bottom of the handle bracket (24) is connected to the battery assembly (4), the front end of the top of the handle bracket (24) is provided with an air inlet (27), a boss (26) is arranged between the front end of the top of the handle bracket (24) and the air inlet (27), the air inlet pipe (18) is provided with a mounting bracket (5), the mounting bracket (5) is mounted on the top of the handle bracket (24), the front end of the mounting bracket (5) is provided with a convex plate (19) matched with the boss (26), the front end of the air inlet pipe (18) is butted with the air inlet (27) on the handle bracket (24), the rear end of the air inlet pipe (18) is closed, and the rear end side of the air inlet pipe (18) is provided with an air outlet (11), installing support (5) on be equipped with opening (12) corresponding with air outlet (11), the side of dirt cup body (31) is equipped with import (66) corresponding with opening (12), handle support (24) on be equipped with dirt cup hasp (22) assorted hasp hole (30), motor element (1) be connected with the rear end of installing support (5), the flange of dirt cup bottom (40) is arranged in on flange (19) of installing support (5), spacing draw-in groove arrange in on installing support (5), dirt cup hasp (22) arrange in on handle support (24) and corresponding with the position at spacing draw-in groove place.

3. The host structure of the handheld vacuum cleaner as claimed in claim 2, wherein the limiting clamping groove comprises a limiting groove (17) and a positioning hole (8), the rear end of the mounting bracket (5) is provided with a rotating groove (6), the rear end of the motor assembly (1) is rotatably connected with the mounting bracket (5) through the rotating groove (6), the limiting groove (17) is arranged on the mounting bracket (5) and located between the rotating groove (6) and the opening (12), the limiting groove (17) is arranged at a position close to the opening (12), the positioning hole (8) is arranged at the bottom of the limiting groove (17) and arranged at one side close to the opening (12), the positioning hole (8) corresponds to the dust cup lock block (22), and the limiting groove (17) of the motor assembly (1) is clamped with the dust cup lock block (22) through the positioning hole (8) in the limiting groove (17), the electric motor is characterized in that a first wire inlet hole (7) is formed in the mounting support (5) and arranged between the rotating groove (6) and the limiting groove (17), a button hole (21) is formed in the rear end of the top of the handle support (24), a speed regulating switch (14) is arranged in the button hole (21), the speed regulating switch (14) is detachably connected with the rear end of the top of the handle support (24) through the button hole (21), a speed regulating circuit board (15) is arranged inside the rear end of the top of the handle support (24), the speed regulating circuit board (15) is inserted into the rear end of the top of the handle support (24), a speed regulating button is arranged on the speed regulating circuit board (15), the speed regulating switch (14) is matched with the speed regulating button on the speed regulating circuit board (15), and the speed regulating circuit board (15) is electrically connected with the motor component (1) through the first wire inlet hole (7), the handle support (24) on be equipped with switch hole (23), switch hole (23) in be equipped with switch (20), battery pack (4) pass through switch (20) and be connected with motor element (1) electricity.

4. The host structure of the handheld vacuum cleaner as claimed in claim 3, wherein the handle support (24) is provided with a latch switch groove (16), the latch switch groove (16) is provided with a latch hole (30), the latch hole (30) is located at a position corresponding to the switch hole (23) in a front-back direction, the dust cup latch (22) is arranged in the latch switch groove (16), one side surface of the dust cup latch (22) is arranged in the latch hole (30), the other side surface of the dust cup latch (22) is provided with a spring sheet groove (25), the spring sheet groove (25) is located at a position corresponding to the latch hole (30) in a front-back direction, the spring sheet groove (25) is provided with a V-shaped spring sheet (81), one side of the V-shaped spring sheet (81) is in contact with the latch switch groove (16), and the other side of the V-shaped spring sheet (81) is in contact with the bottom of the spring sheet groove (25), v type shell fragment (81) are equipped with spacing turn-ups (13) on the one side that contacts with hasp switch slot (16), V type shell fragment (81) are equipped with the limiting block on the one side that contacts with shell fragment groove (25), shell fragment groove (25) are equipped with on one side of spacing fixture block and are injectd hole (28), the limiting block arrange in injectd hole (28), dust cup hasp (22) are equipped with dop (80) on the side of spacing fixture block towards, dop (80) arrange in locating hole (8), dop (80) on be equipped with trip (29), spacing fixture block and dust cup hasp (22) on trip (29) looks joint.

5. The main machine structure of the handheld vacuum cleaner as claimed in claim 3, wherein a spring seat (9) is provided on the mounting bracket (5) and between the wire inlet I (7) and the limiting groove (17), the spring seat (9) is provided at a position close to the limiting groove (17), a top block (88) is provided on the spring seat (9), a bump guide slot (10) is provided on a side surface of the spring seat (9), a bump guide rail (89) matched with the bump guide slot (10) is provided on a side surface of the top block (88), the top block (88) is mounted on the spring seat (9) through the matching of the bump guide slot (10) and the bump guide rail (89), a return spring is provided in the spring seat (9), one end of the return spring is mounted at the bottom of the spring seat (9), and the other end of the return spring is connected with the top block (88), the top block (88) is in contact with the motor component (1).

6. The host structure of the handheld vacuum cleaner as claimed in claim 2, 3, 4 or 5, wherein a rotating groove (33) is formed at the bottom edge of the dust cup body (31), a guide piece (32) is formed at the bottom of the rotating groove (33), a first rotating shaft hole (83) is formed at the opening (12) of the rotating groove (33), a rotating base (41) is formed at the outer edge of the inner side of the dust cup bottom cover (40), a cup bottom spring support (82) matched with the rotating groove (33) is formed on the rotating base (41), the cup bottom spring support (82) comprises a cylindrical main body (45) and a sheet baffle (44), the cup bottom spring support (82) is integrally formed, rotating shafts (46) are respectively arranged at two ends of the cylindrical main body (45), and a second rotating shaft hole (67) is formed on the rotating base (41), rotating shaft (46) on columnar body (45) pass and install in rotating shaft hole (83) of rotating recess (33) behind rotation shaft hole two (67) on rotating seat (41), the side of columnar body (45) is equipped with spring groove (42), spring groove (42) in be equipped with the torsional spring, the one end and the columnar body (45) of torsional spring are connected, the other end and the dirt cup bottom (40) of torsional spring are connected, the lower extreme and the side of columnar body (45) of slice baffle (44) are connected, be equipped with in the middle of the upper end of slice baffle (44) with guide sheet (32) assorted direction recess (43).

7. The main structure of the handheld vacuum cleaner as claimed in claim 6, wherein the outer edge of the bottom cover (40) of the dust cup is provided with a guide groove (48), the guide groove (48) and the rotating base (41) are symmetrically distributed around the bottom cover (40) of the dust cup, the guide groove (48) is located at a position corresponding to the position of the limiting block up and down, the depth of the guide groove (48) gradually decreases from the edge close to the bottom cover (40) of the dust cup to the center close to the bottom cover (40) of the dust cup, the inner side of the bottom cover (40) of the dust cup is provided with a bottom sealing ring (47), the bottom cover (40) of the dust cup is hermetically connected with the main body (31) of the dust cup through the bottom sealing ring (47), and the convex plate (19) of the mounting bracket (5) is provided with a guide block (68) matching with the guide groove (48).

8. The main machine structure of the handheld vacuum cleaner as claimed in claim 6, wherein a guide groove (48) is formed in an outer edge of an outer side of the dust cup bottom cover (40), a position of the guide groove (48), a position of the rotating seat (41) and a position of the limiting fixture block are on the same straight line, a depth of the guide groove (48) is gradually reduced from an edge close to the dust cup bottom cover (40) to a center close to the dust cup bottom cover (40), a cup bottom sealing ring (47) is arranged on an inner side of the dust cup bottom cover (40), the dust cup bottom cover (40) is in sealing connection with the dust cup body (31) through the cup bottom sealing ring (47), and a guide block (68) matched with the guide groove (48) is arranged on the convex plate (19) of the mounting bracket (5).

9. The main unit structure of a handheld vacuum cleaner as claimed in claim 1, 2, 3, 4 or 5, wherein the filter assembly comprises a filter screen (38), a filter core (34), a filter cone (35) and a filter cone support (36), the filter cone support (36) is installed in the filter screen (38), the lower end of the filter cone (35) is installed on the filter cone support (36), the filter core (34) is installed at the upper end of the filter cone (35), the filter core (34) is disposed inside the upper end of the filter screen (38) and contacts with the inside of the upper end of the filter screen (38), a side sealing ring (37) is disposed outside the upper end of the filter screen (38), the filter screen (38) is hermetically connected with the inside of the dust cup body (31) through the side sealing ring (37), and a bottom sealing ring (39) is disposed at the lower end of the filter screen (38), the filter screen cover (38) is connected with the dust cup bottom cover (40) in a sealing way through a bottom sealing ring (39).

10. The handheld vacuum cleaner main unit structure as claimed in claim 9, wherein a semicircular groove (49) is formed in an upper end surface of the filtering filter element (34), a semicircular handle (50) is arranged in the semicircular groove (49), two ends of the semicircular handle (50) are rotatably connected with the filtering filter element (34) and are arranged in the semicircular groove (49), and a handle block (51) is arranged in the middle of the semicircular handle (50).

11. The host structure of the handheld vacuum cleaner as claimed in claim 4 or 5, wherein the motor assembly (1) comprises a dust collection motor (59), a motor housing cover (58), a motor front cover (60), a motor rear cover (57) and an air outlet assembly, the dust collection motor (59) is installed in the motor housing cover (58), the motor housing cover (58) is installed between the motor front cover (60) and the motor rear cover (57), a motor sealing ring is arranged between the front end of the motor housing cover (58) and the front end of the motor front cover (60), the front end of the motor front cover (60) is connected with the top of the dust cup body (31), the limiting block comprises a limiting seat (64) and a limiting block (65), the limiting seat (64) is installed outside the front end of the motor front cover (60) and is matched with the limiting groove (17), the limiting block (65) is arranged on the limiting seat (64), stop block (65) and draw-in gear (80) on trip (29) cooperate the joint, the rear end of motor front shroud (60) is connected with the front end of motor rear shroud (57), the rear end and the air-out subassembly of motor rear shroud (57) are connected, the rear end outside of motor rear shroud (57) is equipped with and rotates recess (6) assorted roating seat (61), roating seat (61) on be equipped with rotation axis (62), rotatory recess (6) in be equipped with the shaft hole that is used for installing rotation axis (62), roating seat (61) install in rotatory recess (6) through rotation axis (62), motor rear shroud (57) on be equipped with the entrance hole two (63) corresponding with entrance hole (7).

12. The host structure of the handheld vacuum cleaner as claimed in claim 11, wherein the air outlet assembly comprises an air outlet cover plate (52) and an air outlet support (56), one end of the air outlet support (56) is mounted at the rear end of the motor rear cover (57), the other end of the air outlet support (56) is mounted in the air outlet cover plate (52), the cross section of the air outlet cover plate (52) is U-shaped, air outlet holes (54) are formed in the side surface of the air outlet cover plate (52), a hepa assembly is arranged on the inner side of the air outlet cover plate (52), the hepa assembly is mounted at the other end of the air outlet support (56), and a support sealing ring is arranged between the air outlet support (56) and the motor rear cover (57).

13. The main unit structure of the handheld vacuum cleaner as claimed in claim 12, wherein the HEPA assembly includes a HEPA bracket (55), an outlet HEPA and a HEPA bracket cover (53), the diameter of the lower end of the HEPA bracket (55) is larger than the diameter of the upper end of the HEPA bracket (55), the outlet HEPA is mounted on the side surface of the HEPA bracket (55), the HEPA bracket cover (53) is mounted on the upper end of the HEPA bracket (55), and the outlet HEPA is disposed between the lower ends of the HEPA bracket cover (53) and the HEPA bracket (55).

14. The host structure of the handheld vacuum cleaner as claimed in claim 2, 3, 4 or 5, wherein the battery assembly (4) comprises a battery case upper cover (70), a battery case lower cover (79) and a battery cell support (72), the battery cell support (72) is installed between the battery case upper cover (70) and the battery case lower cover (79), a through hole (73) is formed in the battery case upper cover (70), a battery button (78) is arranged in the through hole (73), the battery button (78) is connected with a battery lock catch (74), the battery button (78) and the battery lock catch (74) are installed in the battery case upper cover (70) and are arranged between the battery case upper cover (70) and the battery cell support (72), and the battery case upper cover (70) is clamped with the bottom of the handle support (24) through the battery lock catch (74).

15. The main machine structure of the handheld vacuum cleaner as claimed in claim 14, wherein the battery lock catch (74) is provided with a lock head (76) and a lock catch groove (75), the lock head (76) and the battery lock catch (74) are connected perpendicularly to each other, the lock catch groove (75) is disposed at one side close to the connection between the battery lock catch (74) and the lock head (76), the lock catch groove (75) is provided with a guide inclined plane, the battery button (78) is provided with a lock head (77) matched with the lock catch groove (75), the lock head (77) is provided with a wedge-shaped surface matched with the guide inclined plane, the front end of the battery box upper cover (70) is provided with a lock hole (71), the lock head (76) is disposed in the lock hole (71), the rear end of the battery box upper cover (70) is provided with a limit hole (69), the bottom of the handle bracket (24) is provided with a limit block corresponding to the limit hole (69) and a lock block corresponding to the lock hole (71), the lock block is clamped with the lock head (76).

16. The main machine structure of the handheld vacuum cleaner as claimed in claim 9, wherein the filter screen (38) comprises a filter element holder (84) and a dust outlet cylinder (87), the filter element holder (84) is cylindrical, the diameter of the filter element holder (84) is larger than that of the dust outlet cylinder (87), the filter element holder (84) and the dust outlet cylinder (87) are integrally formed, the side surface of the filter element holder (84) is hollowed, a filter element net (85) is arranged in the side surface of the filter element holder (84), the filter element (34), the filter cone (35) and the filter cone holder (36) are all arranged in the filter element holder (84), the filter element net (85) corresponds to the filter cone (35), the filter element (34) is arranged at one end of the filter element holder (84), and the filter cone holder (36) is arranged at the other end of the filter element holder (84), the other end of filter core frame (84) is connected with the one end of a dirt section of thick bamboo (87), side sealing washer (37) arrange the one end outside that filter core frame (84) were equipped with filter core (34) in, bottom sealing washer (39) arrange the other end outside of a dirt section of thick bamboo (87) in, be equipped with annular direction turn-ups (86) on filter core frame (84) and the junction outward flange of a dirt section of thick bamboo (87), direction turn-ups (86) to a dirt section of thick bamboo (87) direction slope.