CN115588558A

CN115588558A - Anti-direct-current common mode inductor for electrical fire detector and use method thereof

Info

Publication number: CN115588558A
Application number: CN202211167607.XA
Authority: CN
Inventors: 杨益
Original assignee: Nantong Jusheng Amorphous Technology Co ltd
Current assignee: Nantong Jusheng Amorphous Technology Co ltd
Priority date: 2022-09-23
Filing date: 2022-09-23
Publication date: 2023-01-10

Abstract

The invention discloses an anti-direct-current common mode inductor for an electrical fire detector and a using method of the anti-direct-current common mode inductor. According to the invention, the mounting stability of the direct current resistant common mode inductor in the electric fire detector can be improved by mounting the limiting plate and the sucking disc, after the position of the common mode inductor is positioned and mounted, the lath is pushed to move to drive the driving disc to move, after the bottom of the sucking disc moves to be contacted with the mounting plane, the bottom of the driving plate can move to the upper part of the bearing plate to apply pressure to the bearing plate, and the position of the shell is positioned by the bearing plate, so that the aim of improving the mounting stability of the direct current resistant common mode inductor is achieved, and the direct current resistant common mode inductor can be prevented from being interfered by external factors in the electric fire detector to cause the deformation or breakage of pins to influence the use.

Description

Anti-direct-current common-mode inductor for electrical fire detector and using method thereof

Technical Field

The invention relates to the technical field of common mode inductors, in particular to a direct current resistant common mode inductor for an electrical fire detector and a using method thereof.

Background

Electric fire detector mainly used surveys the possibility that the conflagration took place, electric fire detector can produce common mode noise when using internal current flows, common mode electromagnetic interference signal that electric fire detector work produced can be filtered to anti direct current common mode inductance, the electromagnetic wave external radiation emission that restraines the high-speed signal line and produce, current anti direct current common mode inductance is installing inside the back at electric fire detector, the influence that receives external factors makes anti direct current common mode inductance position change easily, cause pin fracture or skew, influence the use, consequently, need the structure to improve electric fire detector internally mounted's anti direct current common mode inductance stability.

The existing common mode inductor has the following defects:

1. patent document CN103489567A discloses a common mode inductor, "it includes magnetic core, magnetism shielding layer and winding, the magnetic core includes top cap, base and two side by side wrapping posts, top cap and base set up relatively, two wrapping posts set up upright in between top cap and the base, each the both ends of wrapping post are fixed in respectively top cap and base, the winding twine in on two wrapping posts, magnetism shielding layer parcel the wrapping post reaches the winding for the magnetic field shielding. The common mode inductor reduces the area of the panel through the two winding posts arranged side by side, and realizes the flattening of devices, is convenient for SMT (surface mount technology) assembly and reduces the production failure rate through the top cover and the base which are oppositely arranged;

2. patent document CN104795201A discloses a common mode inductor, "including magnetic cores and wire groups, the magnetic cores include two first magnetic cores and two second magnetic cores, the two first magnetic cores are disposed oppositely, the two second magnetic cores are also disposed oppositely, and two ends of each second magnetic core are respectively adjacent to the two first magnetic cores and connected to form four joints, the first magnetic cores are provided with metal patches at the joints and along the outer wall in the length direction perpendicular to the first magnetic cores; the wire group is wound on the two first magnetic cores or the two second magnetic cores, and the leading-out terminal of the wire group is in conductive connection with the metal patch. The common mode inductor winds two groups of wire groups on the magnetic core, the magnetic core is provided with the metal patch, the leading-out ends of the wire groups are in conductive connection with the metal patch, the size of the common mode inductor is equivalent to that of the magnetic core, the structural characteristics of the magnetic core are fully utilized, the common mode inductor is installed in a circuit through the metal patch, and the small-sized chip type of the common mode inductor is realized, however, the common mode inductor of the publication document mainly considers the small-sized chip type of the common mode inductor, and does not consider the problem of heat dissipation and dust removal of a coil, so that a structure capable of dissipating heat and removing dust of the common mode inductor coil is needed to be researched, and the service life of the common mode inductor in the electric fire detector can be further prolonged;

3. patent document CN209843464U discloses a common mode inductor, "including a base body, a magnetic core disposed on the base body, and at least two wire windings symmetrically wrapped on the magnetic core, the base body includes a plurality of wire hole pairs symmetrically disposed through the base body and a plurality of wire grooves disposed on the surface of the base body, each wire hole pair includes a pair of wire holes, the wires of the wire windings pass through the wire holes and the wire grooves and are wrapped on the magnetic core, and the portions of the wires exposed out of the wire holes on the surface of the base body are accommodated in the wire grooves. The common mode inductor provided by the utility model is provided with the wire hole and the wire groove, which is convenient for realizing automatic winding and is beneficial to improving the production efficiency, however, the common mode inductor of the above-mentioned published documents mainly considers improving the production efficiency and does not consider the problem of individual replacement of the damaged magnetic core, so that a structure capable of individually replacing the magnetic core is necessary to be researched, and the waste of resources can be further reduced;

4. patent document CN204516557U discloses a common mode inductor "including a magnetic core and a conducting wire wound on the magnetic core, and two adjacent turns of the conducting wire are in surface contact. Compare the mode for line contact between the wire in circular cross section, the utility model discloses a wire is when the coiling, can arrange more closely with laminating between the adjacent two circles wire to improve window space utilization ", however the common mode inductance of above-mentioned open literature mainly considers high window space utilization, does not consider the problem that makes coil and pin quick fixation or separation, consequently, it can make the structure of pin and coil quick fixation or separation to be necessary to study out one kind, and then can not fight against the inside coil of direct current common mode inductance and maintain.

Disclosure of Invention

The invention aims to provide a direct current resistant common mode inductor for an electrical fire detector and a using method thereof, and aims to solve the problems of improving the installation stability of the direct current resistant common mode inductor, performing coil heat dissipation and dust removal on the direct current resistant common mode inductor, independently replacing a magnetic core and quickly fixing and separating coil pins in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: the direct current common mode resistance inductor for the electrical fire detector comprises a shell, a limiting plate, a supporting frame and a driver, wherein two groups of magnetic cores are arranged on the inner wall of the shell, and coils are arranged on the outer wall of each magnetic core in a surrounding mode;

the bottom of the limiting plate is provided with a plurality of groups of mounting grooves, the tops of the inner walls of the mounting grooves are provided with suckers, the inner wall of the limiting plate is provided with two groups of magnets, the top of the limiting plate is provided with a plurality of groups of short rods, the top ends of the short rods are fixedly provided with driving plates, and the outer walls of the short rods are provided with return springs in a surrounding manner;

and the inner wall of the shell is provided with a bearing plate.

Preferably, four sets of pins are mounted at the bottom of the housing.

Preferably, the connecting plate is all installed to the both sides outer wall of drive plate, and the both sides outer wall of shell all is equipped with the sliding tray, and the one end of connecting plate extends to the inside of sliding tray, and the lath is installed to the one end of connecting plate, and a screw ring is installed to the outer wall of lath, and a threaded rod is installed to the inner wall of a screw ring, and the both sides outer wall of shell all is equipped with the locating hole, and the locating hole is located one side of sliding tray.

Preferably, the plate body is installed at the top of shell, and two sets of support frames are installed to the inner wall of plate body, and the fan is installed at the inner wall top of support frame, and the driving machine is installed to the outer wall of fan, and the conveyer pipe is installed to the output of fan, and the protecting crust is installed to the inner wall bottom of support frame, and multiunit ventilation groove is installed to the inner wall of protecting crust, and multiunit jet head is installed to the bottom in ventilation groove, and the connecting pipe is installed to the outer wall in ventilation groove, and the one end of conveyer pipe extends to the inside of connecting pipe, and the multiunit dust guard is installed at the top of support frame.

Preferably, the magnet appearance is rectangle symmetry and installs at the both ends of limiting plate, and the appearance of pin is rectangle, and two bisymmetry install in the bottom of shell, and the sliding tray is rectangular form cell body symmetry and sets up the outer wall at the shell, and the support frame is the appearance for fretwork type frame, inlays the inside of installing at the plate body for the appearance.

Preferably, the backup pad is installed to the inner wall of shell, and the backup pad is located one side of magnetic core, two sets of boxes are installed to the inner wall of shell, the multiunit spacing ring is installed to the inner wall of box, the inner wall of spacing ring runs through and installs the slide bar, the locating piece No. one is installed to the one end of slide bar, the driver is all installed to the both sides outer wall of shell, no. one screw sleeve is installed to the inner wall of driver, no. two threaded rods are installed to No. one screw sleeve's inner wall, the support body is installed to the one end of No. two threaded rods, the back shaft is installed to the inner wall of support body, the outer wall of back shaft is encircleed and is installed the push pedal No. one number, no. one link is installed to the one end of No. one link and the inner wall fixed connection of driver, the outer wall of back shaft is encircleed and is installed the push pedal No. two, no. two links are installed to the outer wall of No. two links, and the outer wall fixed connection of slide bar and long board.

Preferably, four groups of square grooves are installed on the inner wall of the shell, a second threaded sleeve is installed on the inner wall of each square groove, a threaded lead screw is installed on the inner wall of the second threaded sleeve, a nut is installed on the top end of the threaded lead screw, an accommodating frame is installed at the bottom end of each square groove, one end of each threaded lead screw extends to the inside of the accommodating frame, a connecting block is installed at the bottom end of each threaded lead screw, an insulating plate is installed at the bottom of each connecting block, and a second positioning block is installed at the bottom of each insulating plate.

Preferably, the plate is installed to the inner wall of shell, and the plate is located the below of accomodating the frame, and the mounting bracket is installed to the inner wall of plate, and the one end of pin extends to the outer wall of mounting bracket, and the inner wall of mounting bracket is equipped with the constant head tank, and the one end of No. two locating pieces extends to the inside of constant head tank, and the one end of coil extends to the inside of constant head tank.

Preferably, the working steps of the anti-dc common mode inductor are as follows:

s1, when the direct current common mode resistance inductor is installed inside an electric fire detector, the direct current common mode resistance inductor is connected with electricity inside the electric fire detector through pins, after the position of the common mode resistance inductor is located and installed, a pushing strip moves to drive a connecting plate to move, the driving plate moves when the connecting plate moves, the driving plate pushes a short rod to move, the short rod moves to push a limiting plate to move, a sucking disc moves when the limiting plate moves, after the bottom of the sucking disc moves to be in contact with an installation plane, the sucking disc is squeezed to generate suction force, the position of the limiting plate is limited, the bottom of the driving plate moves to the upper side of a bearing plate when the limiting plate is limited, the bearing plate is pressed, the position of a shell is located through the bearing plate, the purpose of improving the installation stability of the direct current common mode resistance inductor is achieved, the direct current common mode resistance inductor can be prevented from being interfered by external deformation factors in the electric fire detector to cause the pins to generate suction force, the using effect can be limited, when the limiting plate is limited, the strip can move to one side of the locating hole, a threaded rod is rotated to cause the threaded rod to move into the position of the locating hole, and further prevent the strip from moving factors;

s2, after the electric fire detector works for a long time, the DC-resistant common mode inductor arranged inside the electric fire detector can be caused to generate heat, when the DC-resistant common mode inductor needs to be subjected to heat dissipation, the driving machine is made to work to drive the fan to work, wind power is generated when the fan works, the wind power moves into the connecting pipe through the conveying pipe, the connecting pipe enables the wind power to flow into the ventilation groove, the wind power entering the ventilation groove can be generated through the air nozzle to form the outer wall of the coil, air in the space where the coil is located can flow, heat generated by the coil can be dissipated, floating dust adsorbed by the outer wall of the coil can be removed, the purpose of dissipating heat and removing dust of the DC-resistant common mode inductor inside the electric fire detector is achieved, and the service life of the DC-resistant common mode inductor can be prolonged;

s3, when internal components of the anti-DC common mode inductor used by the electrical fire detector fail, two groups of second threaded rods are rotated, a first threaded sleeve enables the second threaded rod to move, a second threaded rod drives a frame body to move when moving, the frame body drives a support shaft to rotate when moving, the support shaft is movably connected with a first push plate and a second push plate, the first push plate and the second push plate can do arc motion, the second push plate drives a second connecting frame to move when moving, the second connecting frame drives a long plate to move after moving, the long plate drives a sliding rod to horizontally move inside a limiting ring when moving, the sliding rod drives a first positioning block to move when moving, the magnetic core is not limited any more after the first positioning block moves, the failed magnetic core can be dismounted for maintenance or replacement, the whole anti-DC common mode inductor is not required to be dismounted, and waste of resources is reduced;

s4, the direct current resistant common mode inductor is connected with components inside the electric fire detector through pins, one end of the coil extends to the inside of the positioning groove, and the one end of the coil is connected with the pins through the mounting frame, when the electric fire detector is used, the coil is wound outside the magnetic core, magnetic flux is generated in the coil due to electromagnetic induction, good filtering performance can be achieved for common mode noise, the coil is maintained, when the coil needs to be separated from the pins, the nut is rotated to drive the threaded lead screw to rotate, the threaded lead screw moves when the threaded lead screw rotates inside the second threaded sleeve, the threaded lead screw moves to drive the connecting block to move inside the containing frame, the connecting block moves to drive the insulating plate to move, the second positioning block moves when the insulating plate moves, no limit is carried out on one end of the coil after the second positioning block moves, one end of the coil can be separated from the pins, when the coil needs to be maintained and replaced, the coil and the pins do not need to be connected in a welding mode, and working efficiency is improved.

Preferably, the step S1 further includes the steps of:

s11, when the direct-current common mode inductor needs to be disassembled, the first threaded rod is rotated in the direction, one end of the first threaded rod moves out of the positioning hole, the plate is not limited any more, the plate strip is pushed to move, the driving plate is driven to move through the connecting plate, the limiting plate moves when the driving plate moves, when the limiting plate moves, the sucking disc moves, suction force is not generated on the mounting surface any more, the reset spring pushes the driving plate to move, and the driving plate can reset;

in step S2, the method further includes the steps of:

s21, when the fan works, outside air enters the inside of the supporting frame through the dustproof plate, and the dustproof plate can filter particles carried in the air;

in step S4, the method further includes the steps of:

s41, when the coil is connected, one end of the coil is inserted into the positioning groove, the threaded screw rod is rotated reversely, the second positioning block moves to the outer wall of the coil to position the coil, the coil is fixedly connected with the pins, and the coil can be prevented from being accidentally dropped due to external pulling.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the invention, the mounting stability of the anti-direct current common mode inductor in the electrical fire detector can be improved by mounting the limiting plate and the sucker, after the position of the common mode inductor is positioned and mounted, the driving plate is pushed to move to drive the connecting plate to move, the driving plate and the short rod are pushed to move when the connecting plate moves, the limiting plate is pushed to move when the short rod moves, the sucker is pushed to move when the limiting plate moves, and after the bottom of the sucker moves to contact with a mounting plane, the sucker generates suction force to limit the position of the limiting plate, the bottom of the driving plate can move to the position above the bearing plate when the limiting plate is limited, the bearing plate is pressed, and the position of the shell is positioned through the bearing plate, so that the purpose of improving the mounting stability of the anti-direct current common mode inductor is achieved, and the use effect of the anti-direct current common mode inductor can be prevented from being influenced by external factors to cause deformation or breakage of pins to affect the use effect;

2. the coil can be subjected to heat dissipation and dust removal through the support frame and the air nozzle, after the electric fire detector works for a long time, the internally-mounted direct-current common mode resistance inductor can be caused to generate heat, when the direct-current common mode resistance inductor needs to be subjected to heat dissipation, the driving machine works to drive the fan to work, the fan generates wind power when working, the wind power moves into the connecting pipe through the conveying pipe, the connecting pipe enables the wind power to flow into the ventilating groove, the wind power entering the ventilating groove can appear on the outer wall of the coil through the air nozzle, so that the air in the space where the coil is located can flow, the heat generated by the coil can be dissipated, meanwhile, floating dust adsorbed by the outer wall of the coil can be removed, the purpose of heat dissipation and dust removal of the direct-current common mode resistance inductor inside the electric fire detector is achieved, and the service life of the direct-current common mode resistance inductor can be prolonged;

3. the damaged magnetic core can be disassembled by installing the driver and the first positioning block, so that the whole anti-DC common mode inductor can be conveniently disassembled and maintained, when internal components of the anti-DC common mode inductor used by the electrical fire detector fail, two groups of second threaded rods are rotated, the first threaded sleeve enables the second threaded rod to move, the second threaded rod drives the frame body to move when moving, the frame body drives the support shaft to rotate when moving, the support shaft is movably connected with the first push plate and the second push plate, the first push plate and the second push plate can be enabled to do arc motion, the second push plate drives the second connecting frame to move when moving, the second connecting frame drives the long plate to move, the long plate drives the sliding rod to horizontally move in the limiting ring when moving, the first positioning block is driven to move when moving, the magnetic core is not limited any more after moving the first positioning block, the magnetic core which fails can be disassembled and maintained or replaced, the whole anti-DC common mode inductor does not need to be disassembled, and the waste of resources is reduced;

4. according to the invention, the coil and the pins can be quickly and fixedly connected and separated by installing the square groove and the mounting frame, the coil is maintained, when the coil is required to be separated from the pins, the nut is rotated to drive the threaded lead screw to rotate, the threaded lead screw is moved when rotating inside the second threaded sleeve, the threaded lead screw is moved to drive the connecting block to move at the inner moving position of the containing frame, the connecting block drives the insulating plate to move after moving, the second positioning block is driven to move when the insulating plate moves, one end of the coil is not limited any more after the second positioning block moves, one end of the coil can be separated from the pins, when the coil is required to be maintained and replaced, the coil and the pins are not required to be connected by using a welding mode, and the working efficiency is improved.

Drawings

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

FIG. 2 is a schematic view of the slat structure of the present invention;

FIG. 3 is a schematic cross-sectional view of the present invention;

FIG. 4 is a schematic view of the supporting frame of the present invention;

FIG. 5 is a schematic view of the structure of the driver of the present invention;

FIG. 6 is a schematic view of the frame structure of the present invention;

FIG. 7 is a schematic view of a storage rack according to the present invention;

FIG. 8 is a schematic view of the plate construction of the present invention;

fig. 9 is a flow chart of the operation of the present invention.

In the figure: 1. a housing; 2. a magnetic core; 3. a coil; 4. a pin; 5. a drive plate; 6. a short bar; 7. a return spring; 8. a bearing plate; 9. a limiting plate; 10. a suction cup; 11. a magnet; 12. a connecting plate; 13. a slat; 14. a sliding groove; 15. a first threaded ring; 16. a first threaded rod; 17. positioning holes; 18. a support frame; 19. a fan; 20. a driver; 21. a dust-proof plate; 22. a protective shell; 23. a ventilation slot; 24. a connecting pipe; 25. a gas showerhead; 26. a box body; 27. a limiting ring; 28. a slide bar; 29. a first positioning block; 30. a driver; 31. a first threaded sleeve; 32. a second threaded rod; 33. a first connecting frame; 34. a first push plate; 35. a frame body; 36. a support shaft; 37. a second push plate; 38. a second connecting frame; 39. a long plate; 40. a square groove; 41. a second threaded sleeve; 42. a threaded lead screw; 43. a storage rack; 44. connecting blocks; 45. an insulating plate; 46. a second positioning block; 47. a plate block; 48. a mounting frame; 49. positioning a groove; 50. a plate body; 51. a nut; 53. mounting grooves; 54. a support plate; 55. a delivery pipe.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be configured in a specific orientation, and operate, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1, fig. 3 and fig. 9, an embodiment of the present invention: the utility model provides an electric fire detector is with anti direct current common mode inductance, which comprises an outer shell 1, limiting plate 9, support frame 18 and driver 30, two sets of magnetic core 2 are installed to the inner wall of shell 1, shell 1 provides installation space for magnetic core 2, the outer wall of magnetic core 2 encircles and installs coil 3, bearing plate 8 is installed to the inner wall of shell 1, shell 1 supports bearing plate 8, four groups of pin 4 are installed to the bottom of shell 1, pin 4 makes anti direct current common mode inductance and electric fire detector be connected, anti direct current common mode inductance is connected with the inside components and parts of electric fire detector through pin 4, the inside that coil 3's one end extends to constant head tank 49 makes coil 3's one end and pin 4 be connected through mounting bracket 48, when electric fire detector carries out the use, coil 3 twines in the outside of magnetic core 2, produce fine filtering performance in coil 3 because electromagnetic induction, can be to common mode noise, magnet 11 appearance is the rectangle symmetry and installs the both ends at limiting plate 9, the appearance of rectangular strip shape 4's appearance is rectangle, and two bisymmetry installs the bottom at shell 1, sliding tray 14 sets up for the outer wall of shell 1, the support frame is the inside fretwork type plate body of inserting 50 for the appearance.

Referring to fig. 2 and 3, a plurality of sets of mounting grooves 53 are formed in the bottom of a limiting plate 9, a suction cup 10 is mounted on the top of the inner wall of each mounting groove 53, two sets of magnets 11 are mounted on the inner wall of each limiting plate 9, a plurality of sets of short rods 6 are mounted on the top of each limiting plate 9, a driving plate 5 is fixedly mounted at the top end of each short rod 6, a return spring 7 is mounted on the outer wall of each short rod 6 in a surrounding manner, connecting plates 12 are mounted on the outer walls of two sides of each driving plate 5, sliding grooves 14 are formed in the outer walls of two sides of a housing 1, one end of each connecting plate 12 extends into each sliding groove 14, a lath 13 is mounted at one end of each connecting plate 12, a threaded ring 15 is mounted on the outer wall of each lath 13, a threaded rod 16 is mounted on the inner wall of each threaded ring 15, positioning holes 17 are formed in the outer walls of two sides of the housing 1, and the positioning holes 17 are located on one side of the sliding grooves 14, make anti direct current common mode inductor be connected with the inside electricity of electrical fire detector through pin 4, after the position location installation of common mode inductor, promote lath 13 and remove and drive connecting plate 12 and remove, make drive plate 5 shift position when connecting plate 12 removes, drive plate 5 with promote quarter butt 6 in the time and remove, quarter butt 6 removes and promotes limiting plate 9 and removes, push away sucking disc 10 and remove when limiting plate 9 removes, after the bottom of sucking disc 10 removes and contacts with the mounting plane, extrude sucking disc 10, make sucking disc 10 produce suction, carry on spacingly to the position of limiting plate 9, the bottom of drive plate 5 can remove to the top of bearing plate 8 when limiting plate 9 is spacing, apply pressure to bearing plate 8, position through bearing plate 8 to shell 1, reach the mesh that improves anti direct current common mode inductor installation stability, can prevent that anti direct current common mode inductor from causing pin 4 to take place deformation or fracture when receiving external factor's interference in electrical fire detector, it causes pin 4 to take place deformation or split Influence the result of use, when limiting plate 9 is spacing, lath 13 can remove to one side of locating hole 17, rotates threaded rod 16, and a threaded ring 15 makes threaded rod 16 remove the inside that enters into locating hole 17 and fixes a position lath 13's position, and then can fix a position driving plate 5's position, can prevent that external factors from causing lath 13's position to remove and then limiting plate 9's position to move.

Referring to fig. 3 and 4, a plate body 50 is installed at the top of a housing 1, two sets of support frames 18 are installed on the inner wall of the plate body 50, a fan 19 is installed at the top of the inner wall of the support frame 18, a driving machine 20 is installed on the outer wall of the fan 19, a conveying pipe 55 is installed at the output end of the fan 19, a protection shell 22 is installed at the bottom of the inner wall of the support frame 18, a plurality of sets of ventilation slots 23 are installed on the inner wall of the protection shell 22, a plurality of sets of air nozzles 25 are installed at the bottom of the ventilation slots 23, a connecting pipe 24 is installed on the outer wall of the ventilation slots 23, one end of the conveying pipe 55 extends into the connecting pipe 24, a plurality of sets of dust-proof plates 21 are installed at the top of the support frame 18, after long-time operation of the electrical fire detector, internally installed anti-dc common-mode inductor generates heat, when the anti-dc common-mode inductor needs to dissipate heat, the driving machine 20 operates to drive the fan 19 to operate, wind power is generated when the fan 19 operates, the wind power moves into the connecting pipe 24, the wind power flows into the connecting pipe 24, the outer wall of the coil 3, the wind power flows into the outer wall of the coil 23, the heat-resistant common-mode inductor can absorb the heat of the external heat of the coil, the anti-common-mode inductor, the heat-resistant common-mode inductor can prolong the heat dissipation purpose of the anti-mode heat-discharge detector, and can prolong the anti-discharge detector.

Referring to fig. 3, 5 and 6, a supporting plate 54 is installed on the inner wall of the housing 1, the supporting plate 54 is located on one side of the magnetic core 2, two sets of box bodies 26 are installed on the inner wall of the housing 1, a plurality of sets of limiting rings 27 are installed on the inner wall of the box bodies 26, a sliding rod 28 is installed on the inner wall of the limiting rings 27 in a penetrating manner, a first positioning block 29 is installed at one end of the sliding rod 28, drivers 30 are installed on the outer walls of the two sides of the housing 1, a first threaded sleeve 31 is installed on the inner wall of the driver 30, a second threaded rod 32 is installed on the inner wall of the first threaded sleeve 31, a frame body 35 is installed at one end of the second threaded rod 32, a supporting shaft 36 is installed on the inner wall of the frame body 35, a first push plate 34 is installed on the outer wall of the supporting shaft 36 in a surrounding manner, a first connecting frame 33 is installed at one end of the first push plate 34, the outer wall of one side of the first connecting frame 33 is fixedly connected with the inner wall of the driver 30, a second push plate 37 is installed on the outer wall of the supporting shaft 36 in a surrounding manner, a second connecting frame 38 is arranged on the outer wall of the second push plate 37, a long plate 39 is arranged on the outer wall of the second connecting frame 38, one end of the sliding rod 28 is fixedly connected with the outer wall of the long plate 39, when internal components of a direct current common mode resistance inductor used by the electric fire detector fail, two groups of second threaded rods 32 are rotated, a first threaded sleeve 31 enables the second threaded rods 32 to move, the second threaded rods 32 drive the frame body 35 to move when moving, the frame body 35 drives the supporting shaft 36 to rotate when moving, the supporting shaft 36 is movably connected with the first push plate 34 and the second push plate 37, the first push plate 34 and the second push plate 37 can do arc motion, the second push plate 37 drives the second connecting frame 38 to move when moving, the second connecting frame 38 drives the long plate 39 to move after moving, and the sliding rod 28 is driven to move horizontally in the limiting ring 27 when moving, the sliding rod 28 drives the first positioning block 29 to move when moving, the magnetic core 2 is not limited any more after the first positioning block 29 moves, the magnetic core 2 with a fault can be dismounted for maintenance or replacement, the whole anti-direct-current common-mode inductor is not required to be dismounted, and the waste of resources is reduced.

Referring to fig. 7 and 8, four sets of square grooves 40 are installed on the inner wall of a housing 1, a second screw sleeve 41 is installed on the inner wall of each square groove 40, a screw lead screw 42 is installed on the inner wall of the second screw sleeve 41, a nut 51 is installed on the top end of the screw lead screw 42, an accommodating frame 43 is installed at the bottom end of each square groove 40, one end of the screw lead screw 42 extends into the accommodating frame 43, a connecting block 44 is installed at the bottom end of the screw lead screw 42, an insulating plate 45 is installed at the bottom end of the connecting block 44, a second positioning block 46 is installed at the bottom end of the insulating plate 45, a block 47 is installed on the inner wall of the housing 1, the block 47 is located below the accommodating frame 43, an installing frame 48 is installed on the inner wall of the block 47, one end of each pin 4 extends to the outer wall of the installing frame 48, a positioning groove 49 is formed in the inner wall of the insulating plate 48, one end of the coil 3 extends into the positioning groove 49, when the coil 3 is maintained and replaced, when the coil 3 needs to be separated from the pin 4, the coil 42 is moved, the coil is replaced, the coil 3, and the coil is connected to the coil 3, and the coil 3, when the coil is not needed to be replaced, the coil 3, and the coil is moved, the coil moving mode that the coil is changed, the coil 3, and the coil moving mode that the coil is performed.

The working steps of the anti-DC common mode inductor are as follows:

s1, when the direct current common mode inductor is installed inside an electric fire detector, the direct current common mode inductor is connected with electricity inside the electric fire detector through a pin 4, after the position of the common mode inductor is located and installed, a strip 13 is pushed to move to drive a connecting plate 12 to move, when the connecting plate 12 moves, a driving plate 5 moves, the driving plate 5 pushes a short rod 6 to move, the short rod 6 moves to push a limiting plate 9 to move, when the limiting plate 9 moves, a sucking disc 10 moves to push the sucking disc 10 to move, after the bottom of the sucking disc 10 moves to be in contact with an installation plane, the sucking disc 10 is squeezed to limit the position of the limiting plate 9, when the limiting plate 9 limits the driving plate 5, the bottom of the driving plate 5 moves to the position above a bearing plate 8, pressure is applied to the bearing plate 8, the position of a shell 1 is located through the bearing plate 8, the purpose of improving the installation stability of the direct current common mode inductor is achieved, the direct current common mode inductor can be prevented from being interfered by external factors in the electric fire detector to cause deformation or breakage of the pin 4 to affect the use effect, when the plate 9 moves to one side of a threaded rod 17, a threaded rod 16, and then a threaded rod 13 can be prevented from moving to the position of the limiting plate 13, and the internal locating hole to prevent the external factors of the limiting plate 13 from moving;

s2, after the electric fire detector works for a long time, the internally installed direct current resistant common mode inductor generates heat, when the direct current resistant common mode inductor needs to be radiated, the driving machine 20 works to drive the fan 19 to work, the fan 19 generates wind power when working, the wind power moves into the connecting pipe 24 through the conveying pipe 55, the connecting pipe 24 enables the wind power to flow into the ventilating groove 23, the wind power entering the ventilating groove 23 can appear on the outer wall of the coil 3 through the air nozzle 25, the air in the space where the coil 3 is located can flow, the heat generated by the coil 3 can be radiated, meanwhile, floating dust adsorbed by the outer wall of the coil 3 can be removed, the purpose of radiating and dedusting the direct current resistant common mode inductor in the electric fire detector is achieved, and the service life of the direct current resistant common mode inductor can be prolonged;

s3, when internal components of the anti-DC common mode inductor used by the electrical fire detector fail, two groups of second threaded rods 32 are rotated, the first threaded sleeve 31 enables the second threaded rods 32 to move, the second threaded rods 32 drive the frame body 35 to move, the frame body 35 drives the supporting shaft 36 to rotate when moving, the supporting shaft 36 is movably connected with the first push plate 34 and the second push plate 37, the first push plate 34 and the second push plate 37 can do arc motion, the second push plate 37 drives the second connecting frame 38 to move when moving, the second connecting frame 38 drives the long plate 39 to move after moving, the long plate 39 drives the sliding rod 28 to move horizontally in the limiting ring 27 when moving, the first positioning block 29 is driven to move when moving, the magnetic core 2 is not limited any more after the first positioning block 29 moves, the magnetic core 2 with a failure can be dismounted and maintained or replaced, the whole anti-DC common mode inductor is not required to be dismounted, and waste of resources is reduced;

s4, the direct current resistant common mode inductor is connected with components inside the electric fire detector through the pin 4, one end of the coil 3 extends to the inside of the positioning groove 49, one end of the coil 3 is connected with the pin 4 through the mounting frame 48, when the electric fire detector is used, the coil 3 is wound outside the magnetic core 2, magnetic flux is generated in the coil 3 due to electromagnetic induction, common mode noise can be well filtered, the coil 3 is maintained, when the coil 3 is required to be separated from the pin 4, the nut 51 is rotated to drive the threaded screw rod 42 to rotate, the threaded screw rod 42 is rotated inside the second threaded sleeve 41 to enable the threaded screw rod 42 to move, the threaded screw rod 42 moves to drive the connecting block 44 to move inside the accommodating frame 43, the connecting block 44 moves to drive the insulating plate 45 to move when the insulating plate 45 moves, the second positioning block 46 moves when the insulating plate 45 moves, one end of the coil 3 is not limited any more after the second positioning block 46 moves, one end of the coil 3 can be separated from the pin 4, when the coil 3 is required to be maintained, the coil 3 is not required to be connected with the pin 4 in a welding mode, and the working efficiency is improved.

In step S1, the method further includes the steps of:

s11, when the direct-current common mode inductor needs to be disassembled, the first threaded rod 16 is rotated in the direction, one end of the first threaded rod 16 moves out of the positioning hole 17, the plate 13 is not limited any more, the plate 13 is pushed to move to drive the driving plate 5 to move through the connecting plate 12, the limiting plate 9 moves when the driving plate 5 moves, when the limiting plate 9 moves, the sucking disc 10 moves to prevent suction from being generated on the mounting surface, and the reset spring 7 pushes the driving plate 5 to move, so that the driving plate 5 can reset;

in step S2, the method further includes the steps of:

s21, when the fan 19 works, outside air enters the inside of the supporting frame 18 through the dustproof plate 21, and the dustproof plate 21 can filter particles carried in the air;

in step S4, the method further includes the steps of:

s41, when the coil 3 is connected, one end of the coil 3 is inserted into the positioning groove 49, the threaded screw rod 42 is rotated reversely, the second positioning block 46 moves to the outer wall of the coil 3 to position the coil 3, the coil 3 is fixedly connected with the pin 4, and the coil 3 can be prevented from being pulled by the outside and falling accidentally.

The working principle is that when the DC common mode inductor is installed inside an electric fire detector, the DC common mode inductor is connected with the electricity inside the electric fire detector through pins 4, after the position of the common mode inductor is located and installed, a pushing lath 13 is moved to drive a connecting plate 12 to move, when the connecting plate 12 moves, a driving plate 5 is moved, the driving plate 5 pushes a short rod 6 to move, the short rod 6 pushes a limiting plate 9 to move, when the limiting plate 9 moves, a pushing sucker 10 moves, after the bottom of the sucker 10 moves to contact with an installation plane, the sucker 10 is extruded to enable the sucker 10 to generate suction, the position of the limiting plate 9 is limited, when the limiting plate 9 is limited, the bottom of the driving plate 5 moves to the upper side of a bearing plate 8, pressure is applied to the bearing plate 8, the position of a shell 1 is located through the bearing plate 8, the purpose of improving the installation stability of the DC common mode inductor is achieved, the DC common mode inductor can be prevented from being interfered by external factors in the electric fire detector to cause deformation or breakage of the pins 4, when the lath 9 moves to the position of a locating hole 17, and then a heat dissipation screw rod 16 can prevent the DC common mode inductor 13 from moving to cause heat dissipation of a fan, when the position of the limiting plate 9 needs to move, and the heat dissipation fan, when the position of the heat dissipation lath 16, the heat dissipation fan, the heat dissipation coil 13 is moved to cause the heat dissipation coil, when the heat dissipation coil 13, wind power enters the inside of the connecting pipe 24 through the conveying pipe 55 in a moving mode, the connecting pipe 24 enables the wind power to flow and enter the inside of the ventilation groove 23, the wind power entering the inside of the ventilation groove 23 can appear on the outer wall of the coil 3 through the air nozzle 25, air in the space where the coil 3 is located can flow, heat generated by the coil 3 can be dissipated, floating dust adsorbed by the outer wall of the coil 3 can be removed, the purpose of dissipating and dedusting direct current common mode resistance inside the electric fire detector is achieved, the service life of the direct current common mode resistance can be prolonged, when an internal component of the direct current common mode resistance used by the electric fire detector fails, two groups of second threaded rods 32 are rotated, a first threaded sleeve 31 enables the second threaded rods 32 to move, when the second threaded rods 32 move, the frame body 35 is driven to move, when the frame body 35 moves, the supporting shaft 36 is driven to rotate, the supporting shaft 36 is movably connected with the first push plate 34 and the second push plate 37, the first push plate 34 and the second threaded sleeve 37 can make arc motion, when the second push plate 37 moves, the second push plate 38 drives the second push plate 34 and the magnetic core to move, when the magnetic core moves, the positioning block 28 is connected with the magnetic core 2, the magnetic core moving pin of the magnetic core moving block 27 is not damaged coil, the magnetic core can be removed, the magnetic core can be reduced, when the magnetic core moving pin of the magnetic core moving block 3 is removed, the magnetic core moving block 28, the magnetic core moving block 27 is removed, the magnetic core moving of the magnetic core moving block 27, the magnetic core moving block 27 is removed, when the electric fire detector is used, the coil 3 is wound outside the magnetic core 2, magnetic flux is generated in the coil 3 due to electromagnetic induction, the electric fire detector can have good filtering performance on common-mode noise, the coil 3 is maintained, when the coil 3 needs to be separated from the pins 4, the nut 51 is rotated to drive the threaded lead screw 42 to rotate, the threaded lead screw 42 is moved when the threaded lead screw 42 rotates in the second threaded sleeve 41, the threaded lead screw 42 is moved to drive the connecting block 44 to move in the inner moving position of the accommodating frame 43, the connecting block 44 is moved to drive the insulating plate 45 to move, the insulating plate 45 is moved to drive the second positioning block 46 to move, one end of the coil 3 is not limited any more after the second positioning block 46 is moved, one end of the coil 3 can be separated from the pins 4, when the coil 3 needs to be maintained and replaced, the coil 3 and the pins 4 are not connected in a welding mode, and the working efficiency is improved.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides an electric fire detector is with anti direct current common mode inductance, includes shell (1), limiting plate (9), support frame (18) and driver (30), its characterized in that: two groups of magnetic cores (2) are mounted on the inner wall of the shell (1), and coils (3) are mounted on the outer wall of each magnetic core (2) in a surrounding mode;

the bottom of the limiting plate (9) is provided with a plurality of groups of mounting grooves (53), the top of the inner wall of each mounting groove (53) is provided with a sucker (10), the inner wall of each limiting plate (9) is provided with two groups of magnets (11), the top of each limiting plate (9) is provided with a plurality of groups of short rods (6), the top ends of the short rods (6) are fixedly provided with driving plates (5), and the outer walls of the short rods (6) are provided with reset springs (7) in a surrounding mode;

and a bearing plate (8) is arranged on the inner wall of the shell (1).

2. The anti-DC common mode inductor for the electrical fire detector according to claim 1, wherein: four groups of pins (4) are installed at the bottom of the shell (1).

3. The common mode inductor for electrical fire detector according to claim 1, wherein: connecting plate (12) are all installed to the both sides outer wall of drive plate (5), the both sides outer wall of shell (1) all is equipped with sliding tray (14), and the one end of connecting plate (12) extends to the inside of sliding tray (14), lath (13) are installed to the one end of connecting plate (12), threaded ring (15) are installed No. one to the outer wall of lath (13), threaded rod (16) are installed No. one to the inner wall of threaded ring (15), the both sides outer wall of shell (1) all is equipped with locating hole (17), and locating hole (17) are located one side of sliding tray (14).

4. The anti-DC common mode inductor for the electrical fire detector according to claim 1, wherein: plate body (50) are installed at the top of shell (1), two sets of support frame (18) are installed to the inner wall of plate body (50), fan (19) are installed at the inner wall top of support frame (18), driving machine (20) are installed to the outer wall of fan (19), conveyer pipe (55) are installed to the output of fan (19), protecting crust (22) are installed to the inner wall bottom of support frame (18), multiunit ventilation groove (23) are installed to the inner wall of protecting crust (22), multiunit jet head (25) are installed to the bottom of ventilation groove (23), connecting pipe (24) are installed to the outer wall of ventilation groove (23), and the one end of conveyer pipe (55) extends to the inside of connecting pipe (24), multiunit dust guard (21) are installed at the top of support frame (18).

5. An anti-dc common mode inductor for an electrical fire detector according to any one of claims 1 to 4, wherein: magnet (11) appearance is the rectangle symmetry and installs the both ends at limiting plate (9), and the appearance of pin (4) is rectangle, and two bisymmetry install in the bottom of shell (1), and sliding tray (14) are rectangular form cell body symmetry and set up the outer wall at shell (1), and support frame (18) are fretwork type frame for the appearance, inlay the inside of installing at plate body (50).

6. The common mode inductor for electrical fire detector according to claim 1, wherein: the inner wall of the shell (1) is provided with a support plate (54), the support plate (54) is located on one side of the magnetic core (2), two sets of box bodies (26) are installed on the inner wall of the shell (1), a plurality of sets of limiting rings (27) are installed on the inner wall of the box bodies (26), a sliding rod (28) is installed on the inner wall of each limiting ring (27) in a penetrating mode, a first positioning block (29) is installed at one end of each sliding rod (28), drivers (30) are installed on the outer walls of the two sides of the shell (1), a first threaded sleeve (31) is installed on the inner wall of each driver (30), a second threaded rod (32) is installed on the inner wall of each first threaded sleeve (31), a support body (35) is installed at one end of each second threaded rod (32), a support shaft (36) is installed on the inner wall of each support body (35), a first push plate (34) is installed on the outer wall of each support shaft (36) in a surrounding mode, a first connecting frame (33) is installed at one end of each push plate (34), the outer wall of one side of the first connecting frame (33) is fixedly connected with the inner wall of the driver (30), the outer wall of the supporting shaft (36) is provided with a second push plate (37) in a surrounding manner, the outer wall of the second push plate (37) is provided with a second connecting frame (38), the outer wall of the second connecting frame (38) is provided with a long plate (39), and one end of the sliding rod (28) is fixedly connected with the outer wall of the long plate (39).

7. The anti-DC common mode inductor for the electrical fire detector according to claim 1, wherein: four groups of square grooves (40) are installed to the inner wall of shell (1), no. two threaded sleeve (41) are installed to the inner wall of square groove (40), screw lead screw (42) are installed to the inner wall of No. two threaded sleeve (41), nut (51) are installed on the top of screw lead screw (42), accomodate frame (43) are installed to the bottom of square groove (40), and the one end of screw lead screw (42) extends to the inside of accomodating frame (43), connecting block (44) are installed to the bottom of screw lead screw (42), insulation board (45) are installed to the bottom of connecting block (44), no. two locating piece (46) are installed to the bottom of insulation board (45).

8. The common mode inductor for electrical fire detector according to claim 1, wherein: plate (47) are installed to the inner wall of shell (1), and plate (47) are located the below of accomodating frame (43), and mounting bracket (48) are installed to the inner wall of plate (47), and the one end of pin (4) extends to the outer wall of mounting bracket (48), and the inner wall of mounting bracket (48) is equipped with constant head tank (49), and the one end of No. two locating piece (46) extends to the inside of constant head tank (49), and the one end of coil (3) extends to the inside of constant head tank (49).

9. The method for using the anti-DC common mode inductor for the electrical fire detector according to any one of claims 1 to 8, wherein the anti-DC common mode inductor is operated by the following steps:

s1, firstly, when the DC common mode inductor is installed inside an electric fire detector, the DC common mode inductor is connected with the electricity inside the electric fire detector through a pin (4), after the position of the common mode inductor is positioned and installed, a pushing lath (13) moves to drive a connecting plate (12) to move, when the connecting plate (12) moves, a driving plate (5) moves, the driving plate (5) pushes a short rod (6) to move, the short rod (6) moves to push a limiting plate (9) to move, when the limiting plate (9) moves, a pushing sucker (10) moves, after the bottom of the sucker (10) moves to be contacted with an installation plane, the sucker (10) is squeezed, and the sucker (10) generates suction force, carry out spacingly to the position of limiting plate (9), the bottom of drive plate (5) can remove to the top of bearing plate (8) when limiting plate (9) are spacing, exert pressure to bearing plate (8), fix a position the position of shell (1) through bearing plate (8), reach the purpose that improves anti direct current common mode inductance installation stability, can prevent that anti direct current common mode inductance from receiving external factor' S interference in electric fire detector and causing pin (4) to take place deformation or fracture influence result in use, when limiting plate (9) are spacing, lath (13) can remove to one side of locating hole (17), rotate threaded rod (16), threaded ring (15) make threaded rod (16) remove and enter into locating hole (17) The position of the lath (13) is positioned, so that the position of the driving plate (5) can be positioned, and the position of the lath (13) and the limiting plate (9) can be prevented from moving due to external factors;

s2, after the electric fire detector works for a long time, the DC-resistant common mode inductor arranged inside the electric fire detector can be caused to generate heat, when the DC-resistant common mode inductor needs to be radiated, the driving machine (20) works to drive the fan (19) to work, the fan (19) generates wind power when working, the wind power moves into the connecting pipe (24) through the conveying pipe (55), the connecting pipe (24) enables the wind power to flow into the ventilating groove (23), the wind power entering the ventilating groove (23) can be generated by the outer wall of the coil (3) through the air nozzle (25), the air in the space where the coil (3) is located flows, heat generated by the coil (3) can be radiated, floating dust adsorbed by the outer wall of the coil (3) can be removed, the purpose of radiating and dedusting the DC-resistant common mode inductor inside the electric fire detector can be achieved, and the service life of the DC-resistant common mode inductor can be prolonged;

s3, when internal components of the anti-direct-current common-mode inductor used by the electrical fire detector fail, two groups of second threaded rods (32) are rotated, a first threaded sleeve (31) enables the second threaded rods (32) to move, the second threaded rods (32) drive a frame body (35) to move when moving, a support shaft (36) is driven to rotate when moving, the support shaft (36) is movably connected with a first push plate (34) and a second push plate (37), the first push plate (34) and the second push plate (37) can do arc motion, the second push plate (37) drives a second connecting frame (38) to move when moving, the second connecting frame (38) drives a long plate (39) to move after moving, the long plate (39) drives a sliding rod (28) to move horizontally in the inner part of a limiting ring (27) when moving, the sliding rod (28) drives a first positioning block (29) to move, the first positioning block (29) moves after moving, the limiting block (2) is repaired after moving, the magnetic core (2) with a failure can be replaced, the magnetic core (2) can be dismounted, the magnetic core (2) with no longer, the problem of maintenance or the whole anti-direct-current common-mode inductor is not wasted, and the anti-direct-current common-mode inductor is not wasted resources are reduced;

s4, the direct current resistant common mode inductor is connected with components inside the electric fire detector through a pin (4), one end of a coil (3) extends to the inside of a positioning groove (49) to enable one end of the coil (3) to be connected with the pin (4) through an installation frame (48), when the electric fire detector is used, the coil (3) is wound outside a magnetic core (2), magnetic flux is generated in the coil (3) due to electromagnetic induction, common mode noise can be well filtered, the coil (3) is maintained, when the coil (3) needs to be separated from the pin (4), a screw cap (51) is rotated to drive a threaded screw rod (42) to rotate, the threaded screw rod (42) moves when the threaded screw rod (42) rotates inside a second threaded sleeve (41), the threaded screw rod (42) moves to drive a connecting block (44) to move inside a containing frame (43), the connecting block (44) drives an insulating plate (45) to move after moving, a second positioning block (46) is driven to move when the insulating plate (45) moves, one end of the second positioning block (46) moves to enable one end of the coil (3) to be connected with the pin (3), and the pin (4) can be connected without welding, when the coil (3) is required to be separated from the pin (4), the working efficiency is improved.

10. The method for using the common mode inductor against direct current for the electrical fire detector according to claim 9, wherein in the step S1, the method further comprises the steps of:

s11, when the direct current common mode inductor needs to be disassembled, the first threaded rod (16) is rotated in the direction, one end of the first threaded rod (16) moves out of the positioning hole (17), the plate (13) is not limited any more, the plate (13) is pushed to move, the driving plate (5) is driven to move through the connecting plate (12), the limiting plate (9) moves when the driving plate (5) moves, when the limiting plate (9) moves, the sucking disc (10) moves, suction force is not generated on the mounting surface any more, and the reset spring (7) pushes the driving plate (5) to move, so that the driving plate (5) can reset;

in step S2, the method further includes the steps of:

s21, when the fan (19) works, outside air enters the inside of the supporting frame (18) through the dustproof plate (21), and the dustproof plate (21) can filter particles carried in the air;

in step S4, the method further includes the steps of:

s41, when the coil (3) is connected, one end of the coil (3) is inserted into the positioning groove (49), the threaded screw rod (42) is rotated reversely, the second positioning block (46) moves to the outer wall of the coil (3) to position the coil (3), the coil (3) is fixedly connected with the pins (4), and the coil (3) can be prevented from being accidentally dropped due to external tearing.