CN114401606A

CN114401606A - Electromagnetic shielding device for electronic equipment

Info

Publication number: CN114401606A
Application number: CN202210299566.3A
Authority: CN
Inventors: 闫振强; 刘广顺; 张珊
Original assignee: Tianjin Aerospace Hexing Technology Co ltd; Beijing Aerospace Hexing Technology Co Ltd
Current assignee: Tianjin Aerospace Hexing Technology Co ltd; Beijing Aerospace Hexing Technology Co Ltd
Priority date: 2022-03-25
Filing date: 2022-03-25
Publication date: 2022-04-26
Anticipated expiration: 2042-03-25
Also published as: CN114401606B

Abstract

The invention discloses an electromagnetic shielding device for electronic equipment, which relates to the technical field of electronic communication equipment shielding and comprises an installation bottom plate and a supporting plate, wherein a protective assembly is installed between the installation bottom plate and the supporting plate, a main device shell is arranged above the supporting plate, an electromagnetic shielding device main body is fixedly connected onto the main device shell, and a rotating column is fixedly connected to the center of the outer wall of the bottom of the main device shell; the invention utilizes the arranged swinging component, in the actual operation process, the rack can be driven to move back and forth in the horizontal direction by the operation of the reciprocating push rod motor, and the rotating column and the main shell of the device provided with the electromagnetic shield main body can be driven to swing back and forth through the transmission action of the rack and the gear, so that a sector area is finally formed. The electromagnetic interference outside can be effectively protected in the area, and compared with a traditional fixed device, the design can effectively reduce the weak point of electromagnetic shielding so as to ensure the omnibearing shielding effect on the whole area.

Description

Electromagnetic shielding device for electronic equipment

Technical Field

The invention relates to the technical field of shielding of electronic communication equipment, in particular to an electromagnetic shielding device of electronic equipment.

Background

The electromagnetic environment of a battlefield in the future informatization war is extremely complex, and if corresponding electromagnetic shielding measures cannot be taken, the performance of electronic equipment for related command communication is reduced, so that the battle progress and even the war success or failure are influenced. As is well known, any electronic device can normally work under a certain electromagnetic environment, and experiments prove that the electronic device loses function when electromagnetic radiation exceeds a threshold value of the electromagnetic radiation. In wartime, various electronic equipment is in a very severe electromagnetic environment, and once the electromagnetic shielding condition is damaged, serious consequences are faced.

The utility model discloses a chinese utility model patent of publication No. CN209643272U discloses an electronic product communication equipment electromagnetic shield device, which comprises a supporting plate, the locating lever has been cup jointed in the equal activity in both sides of backup pad, the top fixedly connected with safety cover of locating lever, the bottom of safety cover and the top contact of backup pad, the right side fixedly connected with location axle at backup pad top, the surface activity of location axle has cup jointed rectangular board, rectangular board's side fixedly connected with shielding appearance body, the spacing groove has been seted up in the backup pad. Above-mentioned electronic product communication equipment electromagnetic shield device, under the cooperation through CD-ROM drive motor and actuating lever, and then drive spacing spring and poker rod and rotate, further stir the shielding appearance body, including under the cooperation of replying the spring, utilize the resilience of replying the spring simultaneously for the shielding appearance body carries out reciprocating rotation, thereby has reached the all-round shielding signal's of developments effect.

However, the invention has the following disadvantages: when the patent is reset, the characteristic of the spring is utilized, so that aftershock and vibration are easily generated during actual use, and the signal stability of the shielding device is influenced; above-mentioned patent does not utilize rotation process further, and it only utilizes the opening to dispel the heat, and the heat dissipation is slow, the cooling effect is not obvious, so has the limitation.

Disclosure of Invention

The present invention is directed to an electromagnetic shielding device for electronic equipment, so as to solve the problems mentioned in the background art.

The technical scheme of the invention is as follows: an electromagnetic shielding device for electronic equipment comprises a mounting base plate and a supporting plate, wherein a protective assembly is arranged between the mounting base plate and the supporting plate, a main device shell is arranged above the supporting plate, an electromagnetic shielding device main body is fixedly connected onto the main device shell, a rotating column is fixedly connected to the center of the outer wall of the bottom of the main device shell and is rotatably connected with the supporting plate through a bearing, a bottom cylinder is fixedly connected between the supporting plate and the mounting base plate, one end, close to the mounting base plate, of the bottom cylinder is provided with a plurality of uniformly distributed filtering holes, a swinging assembly is arranged between the bottom cylinder and the rotating column, the swinging assembly comprises a gear fixedly arranged on the outer wall of the bottom of the rotating column, a horizontally arranged reciprocating push rod motor is fixedly arranged on one side of the circumferential inner wall of the bottom cylinder, the end part of an extension rod of the reciprocating push rod motor is fixedly connected with a rack, and the outer wall of the bottom of the rotating column is fixedly provided with a gear meshed with the rack, the circumference inner wall other end fixed mounting of a bottom section of thick bamboo has a chamber section of thick bamboo that the level set up, and the one end outer wall of a chamber section of thick bamboo is fixedly connected with outlet duct and intake pipe respectively, the one end outer wall of intake pipe and outlet duct is fixedly connected with check valve one and check valve two respectively, the one end outer wall fixed mounting that reciprocal push rod motor was kept away from to the rack has the piston plate, and the piston plate forms sliding fit with the inner wall of a chamber section of thick bamboo, the inside annular chamber way of being linked together with the outlet duct of seting up of layer board, and the top outer wall of layer board set up a plurality of ventholes that are linked together with annular chamber way, the air inlet that a plurality of equidistance distribute is seted up to the bottom of the device main casing body, and the section of air inlet and venthole all is under the narrow wide trapezium structure, set up the louvre of a plurality of evenly distributed on the one end circumference outer wall of the device main casing body.

Preferably, the protection assembly comprises four support rods fixedly installed at the corners of the outer wall of the top of the installation bottom plate, two support rods close to each other are rotatably connected with a shaft rod, one side of the outer wall of the circumference of the shaft rod is fixedly provided with a protection cover, and the two protection covers are respectively located on two sides of the support plate.

Preferably, two the equal fixed mounting of one side inner wall of protection casing has the connecting block, and all has electric telescopic handle, two through hinged joint between connecting block and the layer board the equal fixed mounting of one side outer wall that the protection casing is close to each other has the rubber strip, and two rubber strips all are provided with assorted wavy meshing end.

Preferably, the inside of the bottom end cylinder is provided with a cleaning mechanism for cleaning the filter holes.

Preferably, clean mechanism includes the extension post of fixed mounting in gear bottom outer wall, and the cover is equipped with the sleeve on extending the outer wall of post, the equal fixed mounting in telescopic circumference outer wall both sides has the side shaft of level setting, and the equal fixedly connected with brush block of the tip of two side shafts, be provided with the brush hair that contacts with the filtration pore on the brush block.

Preferably, the containing opening has been seted up to one side of extending the post, and one side inner wall fixed mounting of containing opening has electric magnetic stripe, and the equal fixed mounting in inner wall both ends of containing opening has extension spring, and extension spring's tip fixedly connected with magnetic stripe, the magnetic stripe is opposite with electric magnetic stripe's magnetic pole direction, and sleeve circumference inner wall set up with magnetic stripe sliding fit's notch in vertical direction.

Preferably, the outer wall of the bottom of the gear is fixedly connected with a return spring, the bottom end of the return spring is in contact with the top end of the sleeve, the bottom end of the sleeve is provided with an oblique section, and the outer wall of the top of the mounting base plate is fixedly provided with a ball head support rod corresponding to the oblique section close to the edge.

Preferably, the equal fixed mounting in bottom outer wall four corners of mounting plate has the sucking disc, and mounting plate's bottom outer wall fixed mounting has a plurality of anti-skidding frame strips, and is a plurality of anti-skidding frame strip's diagonal position is the same.

Preferably, the outer wall of the bottom of the main shell of the device and the outer wall of the top of the supporting plate are provided with annular sinking grooves with the same specification, and the inner walls of the two annular sinking grooves are connected with a plurality of balls in a rolling manner.

Preferably, the air inlets are one group of three air inlets, each group of air inlets are distributed in an annular array, one gas outflow direction of the one-way valve faces to the inside of the cavity barrel, and the gas outflow direction of the two one-way valve faces to the annular cavity channel.

The invention provides an electromagnetic shielding device of electronic communication equipment by improving, compared with the prior art, the following improvements and advantages:

one is as follows: the invention utilizes the arranged swinging component, in the actual operation process, the rack can be driven to move back and forth in the horizontal direction through the operation of the reciprocating push rod motor, and the rotating column and the main shell of the device provided with the electromagnetic shielding device main body can be driven to swing back and forth through the transmission action of the rack and the gear, and finally a fan-shaped area is formed.

The second step is as follows: according to the invention, by utilizing the cavity barrel, when the rack moves towards the cavity barrel, the piston plate can be pushed, so that the internal volume of the cavity barrel is compressed, air is blown to the annular cavity channel through the air outlet pipe and is blown into the air inlet through the air outlet hole, so that air flow is formed inside the main shell of the device, and heat is dissipated through the heat dissipation holes in the side surface, so that the purpose of cooling is achieved; when the rack moves towards the direction of the reciprocating push rod motor, the rack pulls the piston plate, at the moment, the interior of the cavity barrel is in a negative pressure state, and outside air enters the interior of the cavity barrel through the filter hole, the air inlet pipe and the one-way valve I in sequence, so that the interior of the main shell of the device is conveniently and continuously cooled; the cross sections of the air inlet and the air outlet are respectively provided with a trapezoidal structure with a narrow top and a wide bottom, so that the narrow tube effect can be formed when air flows through, the flowing speed of the air can be improved, and heat in the main shell of the device can be rapidly blown out in a targeted manner; the deep utilization of the driving process is realized, and the action effect of the driving action is favorably increased;

and thirdly: according to the invention, by utilizing the arranged electric telescopic rod, when the extension rod extends out, the connecting block can be pushed, and the protective covers can swing by taking the two shaft rods as circle centers respectively, so that the two protective covers are far away from each other and are in an unfolded state; meanwhile, when the two protective covers are unfolded, the distance between the protective covers and the mounting base plate is opened, so that the filtering holes of the bottom end cylinder are conveniently exposed, and the smooth air suction operation of the piston plate is ensured; when the extension rod of the electric telescopic rod is withdrawn, the two protective covers are mutually closed, and are in a furled state; when the protective cover is in a furled state, the two wavy meshing ends are meshed with each other, so that the contact area between the two rubber strips is effectively increased, and the protective effect of the protective cover can be improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

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

FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1 according to the present invention;

FIG. 3 is a schematic view of an overall first perspective three-dimensional structure of the present invention;

FIG. 4 is a schematic overall second-view perspective view of the present invention;

FIG. 5 is a structural view illustrating the deployed state of the shield according to the present invention;

FIG. 6 is a schematic view of a bottom end cartridge in a semi-sectional perspective view in accordance with the present invention;

FIG. 7 is an enlarged view of the structure of FIG. 6B according to the present invention;

FIG. 8 is a perspective view of the main housing of the device of the present invention;

FIG. 9 is a schematic cross-sectional view of the bottom cartridge of the present invention;

FIG. 10 is a schematic cross-sectional view of an extending column according to the present invention.

Reference numerals:

1. mounting a bottom plate; 101. a suction cup; 102. anti-slip frame strips; 103. a support rod; 104. a shaft lever; 2. a bottom end barrel; 201. filtering holes; 3. a support plate; 301. an electric telescopic rod; 302. connecting blocks; 303. an air outlet; 304. an annular channel; 4. a protective cover; 401. a rubber strip; 402. a contoured snap end; 5. an electromagnetic shield main body; 501. a device main housing; 502. heat dissipation holes; 503. an annular sinking groove; 504. an air inlet; 6. a reciprocating push rod motor; 7. a rack; 8. a gear; 9. a cleaning mechanism; 901. extending the column; 902. a return spring; 903. a sleeve; 904. a side shaft; 905. a magnetic strip; 906. a ball head support rod; 907. brushing blocks; 10. turning the column; 11. a piston plate; 12. a chamber cylinder; 13. an air outlet pipe; 14. an air inlet pipe; 15. a one-way valve I; 16. a second one-way valve; 17. a receiving opening; 18. an electric magnetic strip; 19. a tension spring.

Detailed Description

The present invention is described in detail below, and technical solutions in the embodiments of the present invention are clearly and completely described, 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.

The invention provides an electromagnetic shielding device of electronic equipment through improvement, and the technical scheme of the invention is as follows:

as shown in fig. 1 to 10, the device comprises a mounting base plate 1 and a supporting plate 3, a protective component is installed between the mounting base plate 1 and the supporting plate 3, a device main shell 501 is arranged above the supporting plate 3, an electromagnetic shield main body 5 is fixedly connected to the device main shell 501, a rotary column 10 is fixedly connected to the center of the outer wall of the bottom of the device main shell 501, the rotary column 10 is rotatably connected to the supporting plate 3 through a bearing, a bottom end cylinder 2 is fixedly connected between the supporting plate 3 and the mounting base plate 1, one end of the bottom end cylinder 2 close to the mounting base plate 1 is provided with a plurality of uniformly distributed filtering holes 201, a swing component is installed between the bottom end cylinder 2 and the rotary column 10, the swing component comprises a gear 8 fixedly installed on the outer wall of the bottom of the rotary column 10, a horizontally arranged reciprocating push rod motor 6 is fixedly installed on one side of the circumferential inner wall of the bottom end cylinder 2, a rack 7 is fixedly connected to the end of the reciprocating push rod motor 6, a gear 8 meshed with a rack 7 is fixedly arranged on the outer wall of the bottom of the rotary column 10, a horizontally arranged cavity cylinder 12 is fixedly arranged at the other end of the circumferential inner wall of the bottom cylinder 2, an air outlet pipe 13 and an air inlet pipe 14 are respectively fixedly connected to the outer wall of one end of the cavity cylinder 12, a one-way valve I15 and a one-way valve II 16 are respectively fixedly connected to the outer walls of one ends of the air inlet pipe 14 and the air outlet pipe 13, a piston plate 11 is fixedly arranged on the outer wall of one end of the rack 7 far away from the reciprocating push rod motor 6, the piston plate 11 is in sliding fit with the inner wall of the cavity cylinder 12, an annular cavity channel 304 communicated with the air outlet pipe 13 is arranged in the supporting plate 3, a plurality of air outlet holes 303 communicated with the annular cavity channel 304 are arranged on the outer wall of the top of the supporting plate 3, a plurality of air inlets 504 distributed at equal intervals are arranged at the bottom of the main shell 501 of the device, and the sections of the air inlets 504 and the air outlet holes 303 are in a trapezoidal structure with a narrow top and a wide bottom, a plurality of heat dissipation holes 502 are uniformly distributed on the circumferential outer wall of one end of the device main housing 501.

By means of the structure, the arranged swing assembly is utilized, when the device is in actual use, the rack 7 can be driven to move back and forth in the horizontal direction through the operation of the reciprocating push rod motor 6, the rotary column 10 and the device main shell 501 provided with the electromagnetic shielding device main body 5 can be driven to swing back and forth through the transmission action of the rack 7 and the gear 8, and finally a fan-shaped area is formed, so that external electromagnetic interference can be effectively protected in the area;

by utilizing the arranged cavity barrel 12, when the rack 7 moves towards the cavity barrel 12, the piston plate 11 can be pushed, so that the internal volume of the cavity barrel 12 is compressed, air is blown to the annular cavity channel 304 through the air outlet pipe 13 and is blown into the air inlet 504 through the air outlet 303, so that air flow is formed inside the main shell 501 of the device, and heat is dissipated through the heat dissipation holes 502 on the side surface, so that the purpose of cooling is achieved; when the rack 7 moves towards the direction of the reciprocating push rod motor 6, the rack 7 pulls the piston plate 11, at the moment, the inside of the cavity barrel 12 is in a negative pressure state, and outside air enters the inside of the cavity barrel 12 through the filtering hole 201, the air inlet pipe 14 and the one-way valve I15 in sequence, so that the inside of the main shell 501 of the device is conveniently and continuously cooled; by arranging the cross sections of the air inlet 504 and the air outlet 303 to be in a trapezoidal structure with a narrow top and a wide bottom, the air can form a narrow pipe effect when flowing through, so that the air flow rate is improved, and the heat of the main shell 501 of the device is guaranteed to be blown out quickly.

Further, the protection component includes the die-pin 103 of four fixed mounting in 1 top outer wall corners of mounting plate, and rotates on two die-pin 103 that are close to each other and be connected with axostylus axostyle 104, and the equal fixed mounting in circumference outer wall one side of two axostylus axostyle 104 has protection casing 4, and two protection casings 4 are located the both sides of layer board 3 respectively.

Borrow by above-mentioned structure, utilize the protection component that sets up, can utilize two protection casings 4, when the device does not use, two protection casings 4 are in the closure state to can play good guard action to electromagnetic shield main part 5 and the device main casing body 501, avoid it to receive external force to cause the damage, and can play good dustproof effect.

Further, the equal fixed mounting of one side inner wall of two protection casings 4 has connecting block 302, and all has electric telescopic handle 301 through hinged joint between connecting block 302 and the layer board 3, and the equal fixed mounting of one side outer wall that two protection casings 4 are close to each other has rubber strip 401, and two rubber strips 401 all are provided with assorted wavy meshing end 402.

By means of the structure, the arranged electric telescopic rod 301 can push the connecting block 302 when the extension rod extends out, and the protective covers 4 can swing by taking the two shaft rods 104 as circle centers respectively, so that the two protective covers 4 are far away from each other and are in an unfolded state; meanwhile, when the two protective covers 4 are unfolded, the distance between the protective covers 4 and the mounting base plate 1 is increased, so that the filter holes 201 of the bottom end cylinder 2 are conveniently exposed, and the smooth air extraction operation of the piston plate 11 is ensured; when the extension rod of the electric telescopic rod 301 is withdrawn, the two protective covers 4 are mutually closed, and at the moment, the two protective covers are in a furled state; when the protective cover 4 is in a folded state, the two wavy occlusion ends 402 are occluded with each other, so that the contact area between the two rubber strips 401 is effectively increased, and the protective effect of the protective cover 4 can be improved.

Further, a cleaning mechanism 9 for cleaning the filter holes 201 is provided inside the bottom end cartridge 2.

Further, the cleaning mechanism 9 includes an extension column 901 fixedly mounted on the outer wall of the bottom of the gear 8, a sleeve 903 is sleeved on the outer wall of the extension column 901, both sides of the circumferential outer wall of the sleeve 903 are fixedly mounted with horizontally arranged side shafts 904, the end portions of the two side shafts 904 are fixedly connected with brush blocks 907, and bristles contacting with the filter holes 201 are arranged on the brush blocks 907.

By means of the structure, the cleaning mechanism 9 is arranged, and when the gear 8 swings under the driving of the rack 7, the extending column 901 at the bottom end can be driven to rotate.

Further, storage port 17 has been seted up to one side of extension post 901, and one side inner wall fixed mounting of storage port 17 has electric magnetic stripe 18, and the equal fixed mounting in inner wall both ends of storage port 17 has extension spring 19, and extension spring 19's tip fixedly connected with magnetic stripe 905, and magnetic stripe 905 is opposite with the magnetic pole direction of electromagnetic stripe 18, and sleeve 903 circumference inner wall seted up with magnetic stripe 905 sliding fit's notch on vertical direction.

Borrow by above-mentioned structure, when needing to clean bottom section of thick bamboo 2, steerable start-up electric magnetic stripe 18, utilize magnetic stripe 905 and the opposite repulsion force that produces of magnetic pole direction of electromagnetic stripe 18, when extending post 901 and rotating to containing port 17 and notch alignment, magnetic stripe 905 is inside the notch under the effect of repulsion force, make sleeve 903 follow and extend post 901 and rotate, thereby side shaft 904 through both sides drives brush 907 and rotates the inner wall of sweeping bottom section of thick bamboo 2, in order to reach the purpose of clean filtration pore 201, can avoid filtration pore 201 to be blockked up by the dust.

Further, 8 bottom outer walls of gear fixedly connected with reset spring 902, and reset spring 902 bottom and sleeve 903 top contact, the cross section has been seted up to the bottom of sleeve 903, and the top outer wall fixed mounting of mounting plate 1 has and is close to the corresponding bulb of edge with the cross section and support pole 906.

By means of the structure, when the sleeve 903 rotates, the inclined section is always in contact with the top end of the ball head abutting rod 906 under the action of the return spring 902, and the sleeve 903 can move up and down in the vertical direction due to the fact that the contact position of the inclined section and the ball head abutting rod 906 changes, so that the operation range of the brush block 907 can be enlarged, and the purpose of improving the cleaning effect is achieved.

Furthermore, the four corners of the outer wall of the bottom of the mounting base plate 1 are fixedly provided with the suckers 101, the outer wall of the bottom of the mounting base plate 1 is fixedly provided with a plurality of anti-slip frame strips 102, and the diagonal positions of the anti-slip frame strips 102 are the same.

Borrow by above-mentioned structure, utilize the sucking disc 101 of setting to conveniently adsorb fixedly to mounting plate 1, simultaneously, through the adsorption affinity that produces for skid-proof frame strip 102 and contact surface can produce bigger pressure, thereby can improve anti-skidding effect, can further improve the stability when mounting plate 1 places.

Further, the outer wall of the bottom of the main housing 501 and the outer wall of the top of the supporting plate 3 are provided with annular sinking grooves 503 with the same specification, and the inner walls of the two annular sinking grooves 503 are connected with a plurality of balls in a rolling manner.

By means of the structure, the annular sunken groove 503 and the balls are arranged, and the device main shell 501 can be supported and drag-reduced.

Further, the gas inlets 504 are arranged in groups of three, and each group of gas inlets 504 is distributed in an annular array, the gas outflow direction of the first check valve 15 faces the inside of the chamber tube 12, and the gas outflow direction of the second check valve 16 faces the annular channel 304.

By means of the structure, the inflow and outflow of air can be planned and controlled by the aid of the first check valve 15 and the second check valve 16, and the temperature of the interior of the main shell 501 of the device can be conveniently reduced.

When the anti-skid device is used, the installation bottom plate 1 can be conveniently adsorbed and fixed by the arranged sucking disc 101, and meanwhile, the anti-skid frame strips 102 and the contact surface generate larger pressure through the generated adsorption force, so that the anti-skid effect is improved, and the stability of the installation bottom plate 1 during placement is further improved; by using the arranged electric telescopic rod 301, when the extension rod extends out, the connecting block 302 can be pushed, and the protective covers 4 can swing respectively by taking the two shaft rods 104 as the circle centers, so that the two protective covers 4 are far away from each other and are in an unfolded state; meanwhile, when the two protective covers 4 are unfolded, the distance between the protective covers 4 and the mounting base plate 1 is drawn, so that the filter holes 201 of the bottom end cylinder 2 are exposed; in actual use, the reciprocating push rod motor 6 drives the rack 7 to move back and forth in the horizontal direction, the rotating column 10 and the device main shell 501 provided with the electromagnetic shielding device main body 5 are driven to swing back and forth through the transmission action of the rack 7 and the gear 8, and finally a fan-shaped area is formed, so that external electromagnetic interference can be effectively protected in the area; when the rack 7 moves towards the cavity barrel 12, the piston plate 11 is pushed, so that the internal volume of the cavity barrel 12 is compressed, air is blown to the annular cavity channel 304 through the air outlet pipe 13 and is blown into the air inlet 504 through the air outlet hole 303, so that air flow is formed inside the main shell 501 of the device, and heat is dissipated through the heat dissipation holes 502 on the side surface, so that the purpose of cooling is achieved; when the rack 7 moves towards the direction of the reciprocating push rod motor 6, the rack 7 pulls the piston plate 11, at the moment, the inside of the cavity barrel 12 is in a negative pressure state, and outside air enters the inside of the cavity barrel 12 through the filtering hole 201, the air inlet pipe 14 and the one-way valve I15 in sequence, so that the inside of the main shell 501 of the device is conveniently and continuously cooled; the cross sections of the air inlet 504 and the air outlet 303 are both arranged to be in a trapezoidal structure with a narrow top and a wide bottom, so that when air flows through, a narrow pipe effect is formed, the flowing speed of the air is improved, and the heat of the main shell 501 of the device is guaranteed to be blown out quickly; when the gear 8 swings under the driving of the rack 7, the extension column 901 at the bottom end is driven to rotate, and when the bottom end barrel 2 needs to be cleaned, the electric magnetic stripe 18 can be controlled to be started, repulsive force is generated by the magnetic stripe 905 and the magnetic pole of the electromagnetic stripe 18 in opposite directions, when the extension column 901 rotates to the accommodating port 17 and is aligned with the notch, the magnetic stripe 905 is clamped into the notch under the action of repulsive force, so that the sleeve 903 rotates along with the extension column 901, the side shafts 904 at two sides drive the brush block 907 to rotate to sweep the inner wall of the bottom end barrel 2, the purpose of cleaning the filter hole 201 is achieved, and the filter hole 201 is prevented from being blocked by dust; when the sleeve 903 rotates, the inclined section is always in contact with the top end of the ball head abutting rod 906 under the action of the return spring 902, and the sleeve 903 moves up and down in the vertical direction due to the change of the contact position of the inclined section and the ball head abutting rod 906, so that the operation range of the brush block 907 is expanded, and the purpose of improving the cleaning effect is achieved.

The previous description is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An electromagnetic shielding device for electronic equipment, which comprises a mounting base plate (1) and a supporting plate (3), and is characterized in that: a protection component is arranged between the mounting bottom plate (1) and the supporting plate (3), a device main shell body (501) is arranged above the supporting plate (3), an electromagnetic shielding device main body (5) is fixedly connected onto the device main shell body (501), a rotary column (10) is fixedly connected to the center of the outer wall of the bottom of the device main shell body (501), the rotary column (10) is rotatably connected with the supporting plate (3) through a bearing, a bottom cylinder (2) is fixedly connected between the supporting plate (3) and the mounting bottom plate (1), one end, close to the mounting bottom plate (1), of the bottom cylinder (2) is provided with a plurality of uniformly distributed filter holes (201), a swing component is arranged between the bottom cylinder (2) and the rotary column (10), the swing component comprises a gear (8) fixedly mounted on the outer wall of the bottom of the rotary column (10), and a horizontally arranged reciprocating push rod motor (6) is fixedly mounted on one side of the inner wall of the circumference of the bottom cylinder (2), extension rod tip fixedly connected with rack (7) of reciprocal push rod motor (6), and the bottom outer wall fixed mounting of rotary column (10) have with rack (7) engaged with gear (8), the circumference inner wall other end fixed mounting of a bottom section of thick bamboo (2) has a chamber section of thick bamboo (12) that the level set up, and the one end outer wall of a chamber section of thick bamboo (12) is fixedly connected with outlet duct (13) and intake pipe (14) respectively, the one end outer wall of intake pipe (14) and outlet duct (13) is fixedly connected with check valve (15) and two (16) respectively, the one end outer wall fixed mounting that reciprocal push rod motor (6) was kept away from in rack (7) has piston plate (11).

2. An electromagnetic shielding device for electronic equipment according to claim 1, wherein: the piston plate (11) is in sliding fit with the inner wall of the cavity barrel (12), an annular cavity channel (304) communicated with an air outlet pipe (13) is formed in the supporting plate (3), a plurality of air outlet holes (303) communicated with the annular cavity channel (304) are formed in the outer wall of the top of the supporting plate (3), a plurality of air inlets (504) distributed at equal intervals are formed in the bottom end of the main shell (501), the sections of the air inlets (504) and the air outlet holes (303) are both in a narrow-down and wide-down trapezoidal structure, a plurality of heat dissipation holes (502) distributed uniformly are formed in the circumferential outer wall of one end of the main shell (501), each protection component comprises four support rods (103) fixedly mounted at the corners of the outer wall of the top of the mounting base plate (1), two support rods (103) close to each other are rotatably connected with a shaft lever (104), and a protection cover (4) is fixedly mounted on one side of the circumferential outer wall of the two shaft levers (104), and the two protective covers (4) are respectively positioned at two sides of the supporting plate (3).

3. An electromagnetic shielding device for electronic equipment according to claim 2, wherein: two the equal fixed mounting of one side inner wall of protection casing (4) has connecting block (302), and all has electric telescopic handle (301), two through hinged joint between connecting block (302) and layer board (3) the equal fixed mounting of one side outer wall that protection casing (4) are close to each other has rubber strip (401), and two rubber strips (401) all are provided with assorted wavy occlusion end (402).

4. An electromagnetic shielding device for electronic equipment according to claim 1, wherein: the inside of bottom end section of thick bamboo (2) is provided with clean mechanism (9) that are used for clean filtration pore (201).

5. An electromagnetic shielding device for electronic equipment according to claim 4, wherein: the cleaning mechanism (9) comprises an extension column (901) fixedly installed on the outer wall of the bottom of the gear (8), a sleeve (903) is sleeved on the outer wall of the extension column (901), side shafts (904) horizontally arranged are fixedly installed on two sides of the outer wall of the circumference of the sleeve (903), brush blocks (907) are fixedly connected to the end portions of the two side shafts (904), and bristles in contact with the filter holes (201) are arranged on the brush blocks (907).

6. An electromagnetic shielding device for electronic equipment according to claim 5, wherein: storage opening (17) have been seted up to one side of extension post (901), and one side inner wall fixed mounting of storage opening (17) has electric magnetic stripe (18), the equal fixed mounting in inner wall both ends of storage opening (17) has extension spring (19), and the tip fixedly connected with magnetic stripe (905) of extension spring (19), magnetic stripe (905) and the magnetic pole opposite direction of electromagnetic stripe (18), and sleeve (903) circumference inner wall seted up with magnetic stripe (905) sliding fit's notch in vertical direction.

7. An electromagnetic shielding device for electronic equipment according to claim 6, wherein: gear (8) bottom outer wall fixedly connected with reset spring (902), and reset spring (902) bottom and sleeve (903) top contact, the cross section has been seted up to the bottom of sleeve (903), and the top outer wall fixed mounting of mounting plate (1) has and is close to corresponding bulb in edge with the cross section and supports pole (906).

8. An electromagnetic shielding device for electronic equipment according to claim 1, wherein: the all fixed mounting in bottom outer wall four corners of mounting plate (1) has sucking disc (101), and the bottom outer wall fixed mounting of mounting plate (1) has a plurality of anti-skidding frame strips (102), and is a plurality of the diagonal position of anti-skidding frame strip (102) is the same.

9. An electromagnetic shielding device for electronic equipment according to claim 1, wherein: annular heavy grooves (503) with the same specification are formed in the outer wall of the bottom of the main shell (501) and the outer wall of the top of the supporting plate (3), and a plurality of balls are connected to the inner walls of the two annular heavy grooves (503) in a rolling mode.

10. An electromagnetic shielding device for electronic equipment according to claim 2, wherein: the gas inlets (504) are one group of every three, and every group the gas inlets (504) are distributed in an annular array, the gas outflow direction of the one-way valve I (15) faces to the inside of the cavity barrel (12), and the gas outflow direction of the one-way valve II (16) faces to the annular cavity channel (304).