Electromagnetic shielding effectiveness testing device for conductive gasket

Abstract

The utility model discloses a conductive gasket electromagnetic shielding effectiveness testing device, comprising a shielding box body which is fixedly connected with an installation box body, and an opening of the shielding box body is fixedly connected with a conductive gasket installation flange; the box cover is matched with the conductive gasket mounting flange; the insulating space ring is arranged between the conductive gasket mounting flange and the box cover; and the fixing assembly is used for fixing the box cover. The utility model relates to the technical field of avionics testing, in particular to a conductive gasket electromagnetic shielding effectiveness testing device. The technical problem to be solved by the utility model is to provide the electromagnetic shielding effectiveness testing device for the conductive gasket, and the fixing assembly is adopted to replace the original bolt and nut locking mode, so that the rapid fixation of the box cover is realized, and the subsequent test is convenient to realize.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of avionics test, concretely is a kind of electrically-conductive gasket electromagnetic shielding effectiveness testing device. BACKGROUND

[0002] With the rapid development of modern aviation technology, electrically-conductive gasket as the important material of aircraft electronic equipment shielding integrity plays a key role in the field of aircraft electromagnetic protection.The main function of electrically-conductive gasket is to restore the integrity of shielding body by introducing conductive material, effectively suppress electromagnetic leakage, so as to improve the electromagnetic compatibility and protection performance of electronic equipment.

[0003] Prior art, for example CN201387454Y utility model.Liner deformation control assembly not only can realize the insulation connection of shielding box body and cover, and can control the deformation amount of test liner by replacing the thickness of insulating spacer in liner deformation control assembly, so as to obtain the shielding performance of electrically-conductive gasket under different deformation amounts.

[0004] At present, there is still a lack of shielding effectiveness testing device, which realizes the quick fixing of box cover by adopting fixing assembly instead of the locking mode of original bolt and nut, and facilitates subsequent testing. UTILITY MODEL CONTENTS

[0005] The utility model solves the technical problem to provide a kind of electrically-conductive gasket electromagnetic shielding effectiveness testing device, by adopting fixing assembly instead of the locking mode of original bolt and nut, realize the quick fixing of box cover, facilitate subsequent testing.

[0006] The utility model realizes the utility model purpose by adopting the following technical scheme:

[0007] A kind of electrically-conductive gasket electromagnetic shielding effectiveness testing device, characterized by, including: shielding box body, fixedly connected installation box body, the opening of the shielding box body is fixedly connected electrically-conductive gasket installation flange;Box cover, matching the electrically-conductive gasket installation flange;Insulating spacer, is arranged between the electrically-conductive gasket installation flange and the box cover;Fixing assembly, for fixing the box cover.By adopting fixing assembly instead of the locking mode of original bolt and nut, realize the quick fixing of box cover, facilitate subsequent testing.

[0008] As a further limitation of the technical solution, the fixing assembly comprises a set of U plates, each of which is respectively provided with symmetrical straight grooves and symmetrical arc grooves, each of the straight grooves is respectively communicated with the corresponding arc groove, each of the U plates is respectively provided with a sliding block, each of the sliding blocks is respectively fixedly connected with symmetrical circular blocks, each of the circular blocks is respectively matched with the corresponding straight groove and the corresponding arc groove, each of the sliding blocks is respectively fixedly connected with an L-shaped rod, each of the L-shaped rods is respectively fixedly connected with a mounting plate, and each of the mounting plates is respectively fixedly connected with a pressing rod. By adopting the arc groove, when the circular block is at the end of the arc groove away from the straight groove, the mounting plates are away from each other, facilitating the installation of the insulating spacer, the conductive gasket and the box cover. By adopting the straight groove, the pressing rod moves along a straight line, the box cover is pressed and fixed, and the conductive gasket with different thicknesses can be fixed.

[0009] As a further limitation of the technical solution, each of the U plates is respectively connected with a screw, each of the U plates is respectively nested with a T-shaped block, each of the screws is respectively threadedly connected with the corresponding T-shaped block, and each of the T-shaped blocks respectively penetrates through the corresponding sliding block. By adopting the screw drive, the movement of the sliding block is realized, the T-shaped block penetrates through the sliding block, the movement of the circular block along the arc groove is realized, and the movement of the sliding block along the vertical direction of the straight groove is realized.

[0010] As a further limitation of the technical solution, the mounting box body is connected with a set of rotating shafts, each of the rotating shafts is respectively fixedly connected with a power synchronous wheel and a driving synchronous wheel, each of the screws is respectively fixedly connected with a driven synchronous wheel, a power synchronous belt surrounds a set of the power synchronous wheels, one end of four transmission synchronous belts respectively surrounds the corresponding power synchronous wheel, and the other end of the four transmission synchronous belts respectively surrounds the corresponding driven synchronous wheel. By adopting the synchronous belt transmission mechanism, the synchronous movement of all the pressing rods is realized, the quick fixing of the box cover is facilitated, and the use is convenient.

[0011] As a further limitation of the technical solution, a motor is fixedly connected in the mounting box body, and an output shaft of the motor is fixedly connected with the corresponding rotating shaft. By adopting the motor, power is provided for the movement of the pressing rod.

[0012] As a further limitation of the technical solution, the four corners of the flange of the conductive gasket are respectively fixedly connected with positioning pins, and the insulating spacer and the box cover are respectively provided with positioning holes matched with a set of the positioning pins. By adopting the positioning pins and the positioning holes, the installation of the insulating spacer and the box cover is facilitated.

[0013] As a further limitation of the technical solution, the flange of the conductive gasket is fixedly connected with a limiting ring, and the insulating spacer is matched with the limiting ring, facilitating the installation of the insulating spacer.

[0014] Compared with the related art, the electrically-conductive gasket electromagnetic shielding effectiveness testing device has the following beneficial effects:

[0015] (1) The device realizes quick fixing of the box cover by adopting the fixing assembly to replace the original bolt-nut locking mode, and facilitates subsequent testing;

[0016] (2) The device realizes synchronous movement of all the pressing rods by adopting the synchronous belt transmission mechanism, facilitates quick fixing of the box cover, and is convenient to use;

[0017] (3) The device is provided with the arc grooves, when the circular blocks are located at the end of the arc grooves away from the straight grooves, the mounting plates are away from each other, and the installation of the insulating spacers, the electrically-conductive gaskets and the box cover is facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a schematic view of the three-dimensional structure of the utility model Figure One ;

[0019] Figure 2 is a schematic view of the local three-dimensional structure of the utility model Figure One ;

[0020] Figure 3 is a schematic view of the local three-dimensional structure of the utility model Figure Two ;

[0021] Figure 4 is a schematic view of the local three-dimensional structure of the utility model Figure Three ;

[0022] Figure 5 is a schematic view of the local three-dimensional structure of the utility model Figure Four ;

[0023] Figure 6 is a schematic view of the three-dimensional structure of the utility model Figure Two .

[0024] In the drawing: 1, mounting box body, 2, motor, 3, shielding box body, 4, U plate, 5, electrically-conductive gasket mounting flange, 6, straight groove, 7, arc groove, 8, limit ring, 9, positioning pin, 10, box cover, 11, insulating spacer, 12, electrically-conductive gasket, 13, positioning hole, 14, rotating shaft, 15, power synchronous wheel, 16, power synchronous belt, 17, driven synchronous wheel, 18, transmission synchronous belt, 19, driving synchronous wheel, 20, L rod, 21, mounting plate, 22, pressing rod, 23, sliding block, 24, T-shaped block, 25, screw rod, 26, circular block. DETAILED DESCRIPTION

[0025] Clearly, the described embodiments are merely a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0026] Embodiment one: a conductive gasket electromagnetic shielding effectiveness testing device, comprising: a shielding box body 3, a fixedly connected mounting box body 1, the opening of the shielding box body 3 is fixedly connected with a conductive gasket mounting flange 5; a box cover 10 matched with the conductive gasket mounting flange 5; an insulating spacer ring 11 arranged between the conductive gasket mounting flange 5 and the box cover 10; a fixing assembly for fixing the box cover 10. By adopting the fixing assembly to replace the original bolt and nut locking mode, the box cover 10 is quickly fixed, and subsequent testing is facilitated.

[0027] The fixing assembly comprises a group of U plates 4, each of the U plates 4 is respectively provided with symmetrical straight grooves 6 and symmetrical arc grooves 7, each of the straight grooves 6 is respectively communicated with the corresponding arc groove 7, each of the U plates 4 is respectively provided with a sliding block 23, each of the sliding blocks 23 is respectively fixedly connected with symmetrical circular blocks 26, each of the circular blocks 26 is respectively matched with the corresponding straight groove 6 and the corresponding arc groove 7, each of the sliding blocks 23 is respectively fixedly connected with an L-shaped rod 20, each of the L-shaped rods 20 is respectively fixedly connected with a mounting plate 21, and each of the mounting plates 21 is respectively fixedly connected with a pressing rod 22. By adopting the arc groove 6, when the circular block 26 is away from the end of the arc groove 6 far away from the straight groove 7, the mounting plates 21 are away from each other, and the installation of the insulating spacer ring 11, the conductive gasket 12 and the box cover 10 is facilitated. By adopting the straight groove 7, the pressing rod 22 is moved along a straight line, the box cover 10 is extruded and fixed, and conductive gaskets with different thicknesses can be fixed.

[0028] Each of the U plates 4 is bearingly connected with a screw rod 25, each of the U plates 4 is respectively nested with a T-shaped block 24, each of the screw rods 25 is respectively threadedly connected with the corresponding T-shaped block 24, and each of the T-shaped blocks 24 penetrates through the corresponding sliding block 23. By adopting the screw rod 25 to drive, the movement of the sliding block 23 is realized, the T-shaped block 24 penetrates through the sliding block 23, the movement of the circular block 26 along the arc groove 7 is realized, and the movement of the sliding block 23 along the direction perpendicular to the straight groove 7 is realized.

[0029] The mounting box 1 is connected with a group of rotating shafts 14, each of which is fixedly connected with a power synchronous wheel 15 and a driving synchronous wheel 19, each of the screw rods 25 is fixedly connected with a driven synchronous wheel 17, a power synchronous belt 16 is arranged around the group of power synchronous wheels 15, one end of each of the four transmission synchronous belts 18 is arranged around the corresponding power synchronous wheel 15, and the other end of each of the four transmission synchronous belts 18 is arranged around the corresponding driven synchronous wheel 17. By adopting the synchronous belt transmission mechanism, synchronous movement of all the pressing rods 22 is realized, the quick fixing of the box cover 10 is facilitated, and the device is convenient to use.

[0030] The mounting box 1 is fixedly connected with a motor 2, and an output shaft of the motor 2 is fixedly connected with the corresponding rotating shaft 14. By adopting the motor 2, power is provided for the movement of the pressing rod 22.

[0031] The motor 2 is of a DB100 model.

[0032] The four corners of the flange 5 are fixedly connected with positioning pins 9, and the insulating spacer 11 and the box cover 10 are provided with positioning holes 13 matched with the group of positioning pins 9. By adopting the positioning pins 9 and the positioning holes 13, the installation of the insulating spacer 11 and the box cover 10 is facilitated.

[0033] The shielding box 3 adopts the same structure as the utility model with the authorization announcement No. CN201387454Y, is connected with the same test equipment, and realizes the test on the conductive gasket 12.

[0034] The working principle of the conductive gasket electromagnetic shielding effectiveness test device is as follows:

[0035] In the initial state, the circular block 26 is located at the uppermost end of the arc groove 7.

[0036] When installing, the insulating spacer 11 is installed, the positioning pin 9 is relative to the positioning hole 13, the conductive gasket 12 is installed in the area of the insulating spacer 11, and the box cover 10 is installed, and the positioning pin 9 is relative to the positioning hole 13. The motor 2 is controlled to rotate, the motor 2 drives a rotating shaft 14, a power synchronous wheel 15 and a driving synchronous wheel 19 to rotate, the power synchronous wheel 15 drives the power synchronous belt 16 to move, the power synchronous belt 16 drives the remaining power synchronous wheels 15, the rotating shaft 14 and the driving synchronous wheel 19 to rotate, the driving synchronous wheel 19 drives the transmission synchronous belt 18 to move, the transmission synchronous belt 18 drives the driven synchronous wheel 17 and the screw rod 25 to rotate, the screw rod 25 drives the T-shaped block 24 to move, the T-shaped block 24 drives the sliding block 23 to move, and when the circular block 26 moves along the arc groove 7, the sliding block 23 moves along the arc groove 7 downwards, and when the circular block 26 moves along the straight groove 6, the sliding block 23 moves along the straight groove 6, the sliding block 23 drives the L-shaped rod 20, the mounting plate 21 and the pressing rod 22 to move, and the pressing rod 22 is pressed against the box cover 10.

[0037] In the embodiment, the conductive gasket is fixedly connected with the flange 5 through the limiting ring 8, and the insulating spacer 11 is matched with the limiting ring 8, so that the installation of the insulating spacer 11 is facilitated.

[0038] The working principle of the conductive gasket electromagnetic shielding effectiveness testing device is as follows:

[0039] When the insulating spacer 11 is installed, the insulating spacer 11 is placed in the area of the limiting ring 8, so that the positioning and installation are facilitated.

[0040] The above-described embodiments are merely examples of the utility model, and do not limit the patent range of the utility model, and any equivalent structure or equivalent process conversion obtained by using the contents of the utility model specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection range of the utility model.

Claims

1. A device for testing electromagnetic shielding effectiveness of conductive gasket, characterized in that, comprising: a shielding box (3) fixedly connected to a mounting box (1), an opening of the shielding box (3) is fixedly connected to a conductive gasket mounting flange (5); a box cover (10) matched to the conductive gasket mounting flange (5); an insulating spacer ring (11) arranged between the conductive gasket mounting flange (5) and the box cover (10); a fixing assembly for fixing the box cover (10).

2. The device of claim 1, wherein: The fixing assembly comprises a set of U plates (4), each of the U plates (4) is respectively provided with symmetrical straight slots (6) and symmetrical arc slots (7), each of the straight slots (6) is respectively communicated with the corresponding arc slot (7), each of the U plates (4) is respectively provided with a sliding block (23), each of the sliding blocks (23) is respectively fixedly connected to symmetrical circular blocks (26), each of the circular blocks (26) is respectively matched to the corresponding straight slot (6) and the corresponding arc slot (7), each of the sliding blocks (23) is respectively fixedly connected to an L-shaped rod (20), each of the L-shaped rods (20) is respectively fixedly connected to a mounting plate (21), and each of the mounting plates (21) is respectively fixedly connected to a pressing rod (22).

3. The test device of claim 2, wherein each of the plurality of conductive gaskets is formed of a conductive material. Each of the U plates (4) is bearingly connected to a screw rod (25), each of the U plates (4) is respectively nested with a T-shaped block (24), each of the screw rods (25) is respectively threadedly connected to the corresponding T-shaped block (24), and each of the T-shaped blocks (24) respectively penetrates the corresponding sliding block (23).

4. The device of claim 3, wherein the device is configured to: The mounting box (1) is bearingly connected to a set of rotating shafts (14), each of the rotating shafts (14) is respectively fixedly connected to a power synchronous wheel (15) and a driving synchronous wheel (19), each of the screw rods (25) is respectively fixedly connected to a driven synchronous wheel (17), a power synchronous belt (16) surrounds a set of the power synchronous wheels (15), one end of four transmission synchronous belts (18) respectively surrounds the corresponding power synchronous wheel (15), and the other end of the four transmission synchronous belts (18) respectively surrounds the corresponding driven synchronous wheel (17).

5. The device of claim 4, wherein the device is configured to: The mounting box (1) is fixedly connected to a motor (2), and an output shaft of the motor (2) is fixedly connected to the corresponding rotating shaft (14).

6. The device of claim 1, wherein: Four corners of the conductive gasket mounting flange (5) are respectively fixedly connected to positioning pins (9), and the insulating spacer ring (11) and the box cover (10) are respectively provided with positioning holes (13) matched to a set of the positioning pins (9).

7. The device of claim 1, wherein the device is configured to measure the electromagnetic shielding effectiveness of the conductive gasket. The conductive gasket mounting flange (5) is fixedly connected to a limiting ring (8), and the insulating spacer ring (11) is matched to the limiting ring (8).

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