CN220045768U - Dust collector - Google Patents

Abstract

The utility model discloses a dust collector, which comprises a dust collector head assembly and a dust collector body, wherein the dust collector head assembly comprises a shell, a bottom plate, a sealing cover, a brush rod, a driving circuit board, a first baffle, a second baffle, a first placing cavity, a second placing cavity, a plugboard, a fixing plate, a positioning cavity, a driving motor, a first extension part, a first transmission tooth, an upper end frame, a second extension part, a transmission rod, a second transmission tooth, a transmission belt and a lower end frame; the dust collector body comprises a cover plate, a placing plate, a power supply circuit board, an energy storage battery, a conductive plug-in seat, a mounting groove, a connecting piece, a conductive plug-in pin, a conductive slot, a first positioning section, a first positioning recess, a second positioning section, a second positioning recess, a third positioning section, a pressing block, a first auxiliary recess and a second auxiliary recess. The utility model has the following advantages and effects: the mounting structure of the driving motor and the connecting piece is optimized, a plurality of screws are not required to be additionally used for fixing, and the practical assembly efficiency is high.

Description

Dust collector

Technical Field

The utility model relates to the field of dust collectors, in particular to a dust collector.

Background

The dust collector is a household appliance for dust removal, and mainly uses a motor to generate negative pressure in the dust collector, so that dust and sundries near an air suction port can be sucked into the dust collector to realize the dust removal effect. In order to thoroughly remove dust and sundries, a rolling brush can be arranged outside the air suction port, and the dust and sundries can be collected through rotation of the rolling brush.

The existing dust collector generally comprises a dust collector head component and a dust collector body, wherein the dust collector head component is arranged on the surface of a floor and used for collecting dust, the dust collector body is connected with the dust collector head component through a rod body, and the dust collector body is used for being held by hands of a user and plays a role in control. However, the existing dust collector has the following defects in the actual use process: (1) the brush bar and the driving motor for providing driving force for rotation for the brush bar are generally arranged in the head assembly of the existing dust collector, however, the driving motor needs to be additionally fixed through a plurality of screws during installation, and the actual assembly efficiency is low. (2) In the assembling process of the dust collector body, a connecting piece is required to be arranged to be connected with a power supply circuit board provided with an energy storage battery, however, when the connecting piece is installed, a plurality of screws are required to be additionally used, and the actual assembling efficiency is low.

Disclosure of Invention

The utility model aims to provide a dust collector for solving the problems in the background art.

The technical aim of the utility model is realized by the following technical scheme: a dust collector comprises a dust collector head component and a dust collector body, wherein the dust collector head component is arranged on the surface of a floor and used for collecting dust, and the dust collector body is used for being held by hands of a user and has a control function; wherein,

the head assembly of the dust collector comprises a shell capable of moving on the surface of a floor, wherein the shell consists of an upper shell and a lower shell, a dust collection opening is formed on the lower surface of the lower shell, and a roller is arranged on the lower surface of the lower shell; a bottom plate is fixedly arranged at the bottom of the lower shell, a sealing cover is fixedly arranged on the bottom plate, a suction chamber is formed between the sealing cover and the lower shell, the suction chamber is communicated with a dust suction port, a brush rod is arranged in the suction chamber, the lower shell is separated by the sealing cover to form a left half area and a right half area, and a driving circuit board is fixedly arranged on the right half area; a first baffle plate extending from the upper side to the lower side of the bottom of the lower shell is fixedly arranged on the left half area, a second baffle plate is fixedly arranged on the right side of the first baffle plate, the second baffle plate extends from the upper side to the upper side of the bottom of the lower shell, a longitudinal first placing cavity is formed between the first baffle plate and the second baffle plate, a longitudinal second placing cavity is formed between the first baffle plate and the bottom plate, the first placing cavity is communicated with the second placing cavity, and the width of the second placing cavity is smaller than that of the first placing cavity; a plugboard is inserted into the first placing cavity and the second placing cavity, a fixing plate is fixedly arranged on the upper side of the bottom of the lower shell, the fixing plate is positioned on the right side of the first baffle, a positioning cavity is formed between the fixing plate and the first baffle, and the widths of the positioning cavity and the second placing cavity are consistent with those of the plugboard; a driving motor is arranged on the right side of the plugboard, a first extension part is arranged at the left end of the driving motor, the first extension part is inserted on the plugboard in a damping way, and an output shaft of the driving motor extends out of the first extension part and is fixedly provided with a first transmission tooth at the end part of the output shaft; an upper end frame is fixedly arranged in the upper shell and is pressed on the driving motor to limit the driving motor; the left end part of the brush rod is fixedly provided with a second extension part, the second extension part is inserted into the plugboard in a damping way, a transmission rod connected with the brush rod is arranged in the second extension part, the end part of the transmission rod is fixedly provided with a second transmission tooth, and the first transmission tooth and the second transmission tooth form transmission fit through a transmission belt; the bottom of the lower shell is fixedly provided with a lower end frame, the driving motor is arranged on the lower end frame, the section of the driving motor is circular, and the lower end frame and the upper end frame are respectively provided with a contact cambered surface which is adhered to the outer wall of the driving motor;

the dust collector body comprises a cover plate, wherein the cover plate consists of an upper cover plate and a lower cover plate, the upper cover plate and the lower cover plate are fixed through a plurality of bolts, and a handle is arranged on the upper cover plate; the lower cover plate comprises a lower base plate and a placing plate fixed on the left side of the lower base plate, a power supply circuit board is fixedly arranged on the placing plate, a plurality of energy storage batteries are arranged on the power supply circuit board, and a conductive plug seat is arranged at the right end of the power supply circuit board; a mounting groove recessed towards the bottom is formed in the left side wall of the lower substrate, and a connecting piece is inserted into the mounting groove; the connecting piece consists of a wiring circuit board, a plug connector and a limiting plate, wherein the wiring circuit board is longitudinally arranged, and a plurality of electric interfaces are arranged on the right side of the wiring circuit board; the plug-in connector comprises a conductive plug-in connector arranged on the left side of the wiring circuit board, the conductive plug-in connector is provided with a plurality of conductive pins extending towards the left side, the conductive plug-in connector is provided with conductive slots for the plurality of conductive pins to be inserted to form conductive connection, and each conductive slot is arranged at the top of the conductive plug-in connector; the limiting plate is fixed on the conductive plug-in and is used for the conductive plug-in to pass through, the limiting plate is inserted into the mounting groove, the upper end and the lower end of the limiting plate are respectively provided with a first positioning section in an extending mode, and the upper end and the lower end of the mounting groove are respectively provided with a first positioning recess into which the first positioning section extends; the bottom of the limiting plate is provided with a second positioning section in an extending mode, and the bottom of the mounting groove is provided with a second positioning recess for the second positioning section to extend in; the top of limiting plate extend and be provided with the third location section, the bottom of upper cover plate fixedly be provided with down the briquetting to in the bottom of lower briquetting seted up the first supplementary sunken, the second supplementary sunken that supplies the third location section to stretch into that supplies first location section to stretch into.

The further arrangement is that: the upper end of the plugboard is fixedly provided with a contact wide plate, and the inside of the upper shell is fixedly provided with an abutting section which can be abutted against the contact wide plate.

The further arrangement is that: the bottom of the upper cover plate is fixedly provided with two positioning frames with intervals, and the two positioning frames are respectively attached to the upper end and the lower end of the wiring circuit board.

The further arrangement is that: the right side of the limiting plate is fixedly provided with two positioning protrusions with intervals, the lower substrate is fixedly provided with positioning convex ribs corresponding to the two positioning protrusions, and the bottom of the wiring circuit board is contacted with and supported by the positioning convex ribs.

The utility model has the beneficial effects that:

1. in the utility model, the driving motor is limited on the plugboard through the first extension part, and then the driving with the brush rod is realized through the first driving teeth, the second driving teeth and the driving belt; the plugboard is fixed in a mode of being inserted into the mounting groove through damping, and meanwhile, the positioning cavity is arranged, and the widths of the positioning cavity and the second placing cavity are consistent with the width of the plugboard, so that the plugboard can be effectively prevented from shaking; the upper shell is fixedly pressed with the driving motor through the upper end frame, so that the driving motor can be stably limited in the shell. According to the utility model, the connection structure of the power supply circuit board and the connecting piece is optimized, the power supply circuit board is provided with the conductive plug-in seat, the conductive plug-in on the connecting piece can form conductive connection with the conductive slot on the conductive plug-in seat through the conductive plug-in pin, and the conductive slot is arranged at the top of the conductive plug-in seat, so that when the connecting piece is installed, the conductive connection between the conductive plug-in pin and the conductive slot can be realized by only inserting the limiting plate into the installation groove from the top of the installation groove, and the installation is very convenient; the arrangement of the first positioning section and the first positioning recess can prevent the whole connecting piece from transversely shaking; the bottom of the connecting piece can be limited through the arrangement of the second positioning section and the second positioning recess, and meanwhile, the top of the connecting piece is limited through the arrangement of the third positioning section and the second auxiliary recess on the lower pressing block, so that the connecting piece is effectively prevented from longitudinally shaking, and the limiting stability of the connecting piece can be further improved through the arrangement of the first auxiliary recess in combination with the first positioning section; therefore, the stability of the connecting piece is good, the connecting piece is fixed without using a screw additionally, the actual assembly efficiency is high, and the subsequent disassembly is very convenient.

2. According to the utility model, the lower end frame is arranged at the bottom of the lower shell to further limit the driving motor, and meanwhile, the contact cambered surfaces are arranged on the lower end frame and the upper end frame to be in contact with the driving motor, so that the stability of the press-fixing driving motor can be improved; the plugboard is better pressed and fixed by arranging the contact wide plate and the abutting section, so that the plugboard is prevented from shaking; furthermore, the utility model can fix the driving motor without using a plurality of screws, and the actual assembly is more convenient.

3. According to the utility model, the two locating frames are arranged to clamp the wiring circuit board, so that the stability is improved; the limiting plate and the wiring circuit board are better supported by arranging the positioning convex ribs.

Drawings

FIG. 1 is a schematic diagram of an embodiment;

FIG. 2 is a schematic view of the internal structure of the cleaner head assembly with the upper housing hidden;

FIG. 3 is an enlarged view of section A of FIG. 2;

FIG. 4 is a schematic view of a part of the internal structure of a cleaner head assembly according to an embodiment;

FIG. 5 is a schematic view of a part of the internal structure of a cleaner head assembly according to an embodiment II;

FIG. 6 is a schematic view of the structure of the upper housing in the cleaner head assembly of the embodiment;

FIG. 7 is a schematic view of a cleaner body according to an embodiment;

FIG. 8 is a schematic view showing the internal structure of the lower cover plate in the embodiment;

fig. 9 is an enlarged view of the portion B in fig. 8;

FIG. 10 is a schematic view of a partial structure of a lower substrate according to an embodiment;

FIG. 11 is a schematic view showing the internal structure of the upper cover plate in the embodiment;

fig. 12 is an enlarged view of a portion C in fig. 11;

fig. 13 is a schematic view showing a partial structure of the inside of the lower cover plate in the embodiment.

In the figure: 11. a rod body; 21. an upper housing; 211. an upper end frame; 22. a lower housing; 221. a lower end frame; 222. a contact cambered surface; 23. a dust collection port; 24. a roller; 31. a bottom plate; 32. a sealing cover; 33. a brush bar; 41. a driving circuit board; 42. a driving motor; 431. a first extension; 432. a first drive tooth; 441. a second extension; 442. a transmission rod; 443. a second drive tooth; 444. a transmission belt; 51. a first baffle; 52. a second baffle; 53. a first placement cavity; 54. a second placement cavity; 55. a fixing plate; 56. a positioning cavity; 61. inserting plate; 62. contacting the wide plate; 63. an abutment section; 71. an upper cover plate; 72. a lower cover plate; 721. a lower substrate; 722. placing a plate; 723. a power supply circuit board; 724. an energy storage battery; 73. a grip; 741. a conductive socket; 7411. a conductive socket; 81. a wiring circuit board; 811. an electrical interface; 82. a conductive insert; 821. conductive pins; 83. a limiting plate; 831. a first positioning section; 833. a third positioning section; 91. a mounting groove; 911. a first positioning recess; 912. a second positioning recess; 92. pressing the block; 921. a first auxiliary recess; 922. a second auxiliary recess; 923. a positioning frame; 931. positioning the bulge; 932. positioning the convex ribs.

Detailed Description

The present utility model will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1 to 13;

the embodiment discloses a dust collector, which comprises a dust collector head component and a dust collector body, wherein the dust collector head component is arranged on the surface of a floor for dust collection, the dust collector body is used for holding hands of a user and has a control function, and the dust collector body is connected with the dust collector head component through a rod body 11; wherein,

the cleaner head assembly comprises a housing capable of moving on the floor surface, the housing comprises an upper housing 21 and a lower housing 22, a dust collection opening 23 is formed on the lower surface of the lower housing 22, and a roller 24 is arranged on the lower surface of the lower housing 22; a bottom plate 31 is fixedly arranged at the bottom of the lower shell 22, a sealing cover 32 is fixedly arranged on the bottom plate 31, a suction chamber is formed between the sealing cover 32 and the lower shell 22 and communicated with the dust suction opening 23, a brush rod 33 is arranged in the suction chamber, the lower shell 22 is divided by the sealing cover 32 to form a left half area and a right half area, and a driving circuit board 41 is fixedly arranged on the right half area; a first baffle plate 51 extending from the upper side to the lower side of the bottom of the lower shell 22 is fixedly arranged on the left half area, a second baffle plate 52 is fixedly arranged on the right side of the first baffle plate 51, the second baffle plate 52 extends from the upper side to the upper side of the bottom of the lower shell 22, a longitudinal first placing cavity 53 is formed between the first baffle plate 51 and the second baffle plate 52, a longitudinal second placing cavity 54 is formed between the first baffle plate 51 and the bottom plate 31, the first placing cavity 53 is communicated with the second placing cavity 54, and the width of the second placing cavity 54 is smaller than that of the first placing cavity 53; a plugboard 61 is inserted in the first placing cavity 53 and the second placing cavity 54, a fixing plate 55 is fixedly arranged on the upper side of the bottom of the lower shell 22, the fixing plate 55 is positioned on the right side of the first baffle plate 51, a positioning cavity 56 is formed between the fixing plate 55 and the first baffle plate, and the widths of the positioning cavity 56 and the second placing cavity 54 are consistent with the width of the plugboard 61; a driving motor 42 is arranged on the right side of the plugboard 61, a first extending part 431 is arranged at the left end of the driving motor 42, the first extending part 431 is inserted on the plugboard 61 in a damping way, and an output shaft of the driving motor 42 extends out of the first extending part 431 and is fixedly provided with a first transmission tooth 432 at the end part thereof; an upper end frame 211 is fixedly arranged in the upper shell 21, and the upper end frame 211 is pressed on the driving motor 42 to limit the driving motor 42; the left end part of the brush rod 33 is fixedly provided with a second extension part 441, the second extension part 441 is inserted on the plugboard 61 in a damping way, a transmission rod 442 connected with the brush rod 33 is arranged in the second extension part 441, the end part of the transmission rod 442 is fixedly provided with a second transmission tooth 443, and the first transmission tooth 432 and the second transmission tooth 443 form transmission fit through a transmission belt 444; a lower end frame 221 is fixedly arranged at the bottom of the lower shell 22, the driving motor 42 is arranged on the lower end frame 221, the section of the driving motor 42 is circular, and the lower end frame 221 and the upper end frame 211 are respectively provided with a contact cambered surface 222 which is adhered to the outer wall of the driving motor 42;

the dust collector body comprises a cover plate, wherein the cover plate consists of an upper cover plate 71 and a lower cover plate 72, the upper cover plate 71 and the lower cover plate 72 are fixed through a plurality of bolts, and a handle 73 is arranged on the upper cover plate 71; the lower cover plate 72 includes a lower substrate 721 and a placement plate 722 fixed on the left side of the lower substrate 721, a power supply circuit board 723 is fixedly arranged on the placement plate 722, a plurality of energy storage batteries 724 are arranged on the power supply circuit board 723, and a conductive plug-in seat 741 is arranged at the right end of the power supply circuit board 723; a mounting groove 91 recessed toward the bottom is formed in the left side wall of the lower substrate 721, and a connecting member is inserted into the mounting groove 91; the connecting piece consists of a wiring circuit board 81, a plug connector and a limiting plate 83, wherein the wiring circuit board 81 is longitudinally arranged, and a plurality of electric interfaces 811 are arranged on the right side of the wiring circuit board 81; the plug-in connector comprises a conductive plug-in connector 82 arranged on the left side of the wiring circuit board 81, the conductive plug-in connector 82 is provided with a plurality of conductive pins 821 extending towards the left side, a conductive socket 741 is provided with conductive slots 7411 for the plurality of conductive pins 821 to be inserted into to form conductive connection, and each conductive slot 7411 is arranged on the top of the conductive socket 741; the limiting plate 83 is fixed on the conductive plug-in 82 and is used for the conductive plug-in 82 to pass through, the limiting plate 83 is inserted into the mounting groove 91, the upper end and the lower end of the limiting plate 83 are respectively provided with a first positioning section 831 in an extending manner, and the upper end and the lower end in the mounting groove 91 are respectively provided with a first positioning recess 911 into which the first positioning section 831 extends; the bottom of the limiting plate 83 is provided with a second positioning section in an extending mode, and the bottom of the mounting groove 91 is provided with a second positioning recess 912 into which the second positioning section extends; the top of limiting plate 83 extends and is provided with third location section 833, and the bottom of upper cover plate 71 is fixed to be provided with down briquetting 92 to offer the first supplementary sunken 921 that supplies first location section 831 to stretch into, the second supplementary sunken 922 that supplies third location section 833 to stretch into in the bottom of briquetting 92 down.

The upper end of the insert plate 61 is fixedly provided with a contact wide plate 62, and the upper housing 21 is internally fixedly provided with an abutting section 63 capable of abutting against the contact wide plate 62.

Wherein, two positioning frames 923 with intervals are fixedly arranged at the bottom of the upper cover plate 71, and the two positioning frames 923 are respectively attached to the upper end and the lower end of the wiring circuit board 81.

Wherein, the right side of the limiting plate 83 is fixedly provided with two positioning protrusions 931 with intervals, the lower substrate 721 is fixedly provided with positioning ribs 932 corresponding to the two positioning protrusions 931, and the bottom of the wiring circuit board 81 is contacted with and supported by the positioning ribs 932.

The working principle of the embodiment is as follows:

(1) the positioning cavity 56 and the second placing cavity 54 are provided for inserting the insertion plate 61 and can limit the insertion plate 61, and stably limit the insertion plate 61 and the driving motor 42 by press-fitting of the upper housing 21.

(2) During installation, the limiting plate 83 is inserted into the installation groove 91 from the top of the installation groove 91, so that the conductive connection between the conductive contact pin 821 and the conductive slot 7411 can be realized, and in order to improve the assembly stability of the connecting piece, the whole connecting piece is prevented from transversely shaking by inserting and matching the first positioning section 831 and the first positioning recess 911; the bottom of the connecting piece can be limited through the insertion and the matching of the second positioning section and the second positioning recess 912, and the top of the connecting piece is limited through the insertion and the matching of the third positioning section 833 and the second auxiliary recess 922, so that the connecting piece is effectively prevented from longitudinally shaking; meanwhile, the first auxiliary recess 921 can be matched with the first positioning section 831 to further improve the limit stability of the connecting piece.

The present embodiment is only for explanation of the present utility model and is not to be construed as limiting the present utility model, and modifications to the present embodiment, which may not creatively contribute to the present utility model as required by those skilled in the art after reading the present specification, are all protected by patent laws within the scope of claims of the present utility model.

Claims (4)

1. A vacuum cleaner, characterized in that: the vacuum cleaner comprises a vacuum cleaner head assembly and a vacuum cleaner body, wherein the vacuum cleaner head assembly is arranged on the surface of a floor and used for sucking dust, the vacuum cleaner body is used for being held by hands of a user and has a control function, and the vacuum cleaner body is connected with the vacuum cleaner head assembly through a rod body (11); wherein,

the head component of the dust collector comprises a shell capable of moving on the surface of a floor, the shell consists of an upper shell (21) and a lower shell (22), a dust collection opening (23) is formed on the lower surface of the lower shell (22), and a roller (24) is arranged on the lower surface of the lower shell (22); a bottom plate (31) is fixedly arranged at the bottom of the lower shell (22), a sealing cover (32) is fixedly arranged on the bottom plate (31), a suction chamber is formed between the sealing cover (32) and the lower shell (22), the suction chamber is communicated with a dust suction opening (23), a brush rod (33) is arranged in the suction chamber, the lower shell (22) is divided by the sealing cover (32) to form a left half area and a right half area, and a driving circuit board (41) is fixedly arranged on the right half area; a first baffle plate (51) extending from the upper side to the lower side of the bottom of the lower shell (22) is fixedly arranged on the left half area, a second baffle plate (52) is fixedly arranged on the right side of the first baffle plate (51), the second baffle plate (52) extends from the upper side to the upper side of the bottom of the lower shell (22) to the bottom plate (31), a longitudinal first placing cavity (53) is formed between the first baffle plate (51) and the second baffle plate (52), a longitudinal second placing cavity (54) is formed between the first baffle plate (51) and the bottom plate (31), the first placing cavity (53) is communicated with the second placing cavity (54), and the width of the second placing cavity (54) is smaller than that of the first placing cavity (53); an inserting plate (61) is inserted in the first placing cavity (53) and the second placing cavity (54), a fixing plate (55) is fixedly arranged on the upper side of the bottom of the lower shell (22), the fixing plate (55) is positioned on the right side of the first baffle (51), a positioning cavity (56) is formed between the fixing plate and the first baffle, and the widths of the positioning cavity (56) and the second placing cavity (54) are consistent with the width of the inserting plate (61); a driving motor (42) is arranged on the right side of the plugboard (61), a first extension part (431) is arranged at the left end of the driving motor (42), the first extension part (431) is inserted on the plugboard (61) in a damping way, and an output shaft of the driving motor (42) extends out of the first extension part (431) and is fixedly provided with a first transmission tooth (432) at the end part of the output shaft; an upper end frame (211) is fixedly arranged in the upper shell (21), and the upper end frame (211) is pressed on the driving motor (42) to limit the driving motor (42); the left end part of the brush rod (33) is fixedly provided with a second extension part (441), the second extension part (441) is inserted into the plugboard (61) in a damping way, a transmission rod (442) connected with the brush rod (33) is arranged in the second extension part (441), the end part of the transmission rod (442) is fixedly provided with a second transmission tooth (443), and the first transmission tooth (432) and the second transmission tooth (443) form transmission fit through a transmission belt (444); a lower end frame (221) is fixedly arranged at the bottom of the lower shell (22), the driving motor (42) is arranged on the lower end frame (221), the section of the driving motor (42) is circular, and the lower end frame (221) and the upper end frame (211) are respectively provided with a contact cambered surface (222) which is adhered to the outer wall of the driving motor (42);

the dust collector body comprises a cover plate, wherein the cover plate consists of an upper cover plate (71) and a lower cover plate (72), the upper cover plate and the lower cover plate are fixed through a plurality of bolts, and a handle (73) is arranged on the upper cover plate (71); the lower cover plate (72) comprises a lower base plate (721) and a placing plate (722) fixed on the left side of the lower base plate (721), a power supply circuit board (723) is fixedly arranged on the placing plate (722), a plurality of energy storage batteries (724) are arranged on the power supply circuit board (723), and a conductive plug-in socket (741) is arranged at the right end of the power supply circuit board (723); a mounting groove (91) recessed towards the bottom is formed in the left side wall of the lower substrate (721), and a connecting piece is inserted into the mounting groove (91); the connecting piece consists of a wiring circuit board (81), a plug connector and a limiting plate (83), wherein the wiring circuit board (81) is longitudinally arranged, and a plurality of electric interfaces (811) are arranged on the right side of the wiring circuit board (81); the plug-in connector comprises a conductive plug-in connector (82) arranged on the left side of a wiring circuit board (81), the conductive plug-in connector (82) is provided with a plurality of conductive pins (821) extending towards the left side, a conductive socket (741) is provided with conductive slots (741) for the plurality of conductive pins (821) to be inserted into to form conductive connection, and each conductive slot (741) is arranged at the top of the conductive socket (741); the limiting plate (83) is fixed on the conductive plug-in unit (82) and is used for the conductive plug-in unit (82) to pass through, the limiting plate (83) is inserted into the mounting groove (91), the upper end and the lower end of the limiting plate (83) are respectively provided with a first positioning section (831) in an extending mode, and the upper end and the lower end in the mounting groove (91) are respectively provided with a first positioning concave (911) for the first positioning section (831) to extend in; the bottom of the limiting plate (83) is provided with a second positioning section in an extending mode, and the bottom of the mounting groove (91) is provided with a second positioning recess (912) into which the second positioning section extends; the top of limiting plate (83) extend and be provided with third location section (833), the bottom of upper cover plate (71) fixedly be provided with down briquetting (92) to in the bottom of lower briquetting (92) seted up first supplementary sunken (921) that supply first location section (831) to stretch into, supply second supplementary sunken (922) that third location section (833) stretch into.

2. A vacuum cleaner as claimed in claim 1, wherein: the upper end of the plugboard (61) is fixedly provided with a contact wide plate (62), and the inside of the upper shell (21) is fixedly provided with an abutting section (63) which can be abutted against the contact wide plate (62).

3. A vacuum cleaner as claimed in claim 1, wherein: the bottom of the upper cover plate (71) is fixedly provided with two positioning frames (923) with intervals, and the two positioning frames (923) are respectively attached to the upper end and the lower end of the wiring circuit board (81).

4. A vacuum cleaner as claimed in claim 1, wherein: two positioning protrusions (931) with intervals are fixedly arranged on the right side of the limiting plate (83), positioning ribs (932) corresponding to the two positioning protrusions (931) are fixedly arranged on the lower substrate (721), and the bottom of the wiring circuit board (81) is contacted with the positioning ribs (932) and supported by the positioning ribs.