Electromagnetic interference device

Abstract

The utility model belongs to the technical field of electromagnetic interference devices, and particularly relates to an electromagnetic interference device which comprises a protection box and an electromagnetic interference device, the electromagnetic interference device is placed in the protection box, and a protection device is arranged in the protection box. According to the electromagnetic interference device equipment, an electromagnetic interference device is placed on a placement table in a protection box, and then a bidirectional motor is started to drive a lead screw in a transmission part to rotate in a bearing, so that a threaded sliding table on the lead screw is driven to relatively slide in a guide sliding groove; when the electromagnetic interference device needs to be used, the elevator is started to push the placement table to the top of the protection box, so that the electromagnetic interference device is exposed, the electromagnetic interference device is more convenient to use, and the electromagnetic interference device is prevented from being damaged. And the protection box is prevented from shielding signals of the electromagnetic interference device.

Description

Technical Field

[0001] The utility model relates to the technical field of electromagnetic interference device equipment, in particular to an electromagnetic interference device. Background Art

[0002] Jammers are generally used in examination rooms or confidential meeting rooms. The former is to interfere with the electromagnetic signals used for cheating and prevent candidates from receiving and transmitting examination information, while the latter is used to prevent the leakage of meeting information. However, on the other hand, most existing electromagnetic jammer devices only include the device body and the device antenna, lacking a fixed structure, so they are prone to falling when accidentally touched. Therefore, the market is in urgent need of a new type of electromagnetic jammer with high placement stability.

[0003] For example, Chinese patent announcement No. CN210297724U discloses a high-stability electromagnetic jammer device. When in use, the electromagnetic jammer device is effectively placed and fixed by arranging the device antenna, frame unit, fixed suction cup and insertion plate unit on the jammer host. The utility model has the advantages of reasonable and effective placement and fixing structure of the electromagnetic jammer device, high stability of the suction cup fixing method, simple and convenient operation of establishing and releasing the fixation at the suction cup, flexible and effective operation of the insertion plate unit for releasing the fixation, which does not affect the suction cup fixation, and high overall placement stability of the device and easy placement.

[0004] However, the high-stability electromagnetic jammer device in the above application is fixed by a suction cup, and the electromagnetic jammer is placed inside a frame to improve the overall stability of the device, but it is not easy to carry and no corresponding protection mechanism is provided. Therefore, there are certain limitations.

[0005] For this reason, we urgently need to provide an electromagnetic interference device. Utility Model Content

[0006] The purpose of the utility model is to provide an electromagnetic jammer device to solve the problem that the high-stability electromagnetic jammer device proposed in the above background technology is fixed and placed by a suction cup, and then the electromagnetic jammer is placed inside the frame to improve the stability of the overall placement of the device, but it is not easy to carry and no corresponding protection mechanism is set.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an electromagnetic jammer device, comprising a protection box and an electromagnetic jammer, wherein the electromagnetic jammer is placed inside the protection box, and a protective device is arranged inside the protection box.

[0008] The protective device includes a placing table, a bidirectional motor, a transmission part, a mounting plate, a stop assembly, and a fixed plate. The placing table is installed inside the protective box, the bidirectional motor is installed at the inner center of the placing table, two groups of the transmission parts are respectively installed at the left and right output ends of the bidirectional motor, the two mounting plates are respectively installed at the top of the transmission parts, the two groups of the stop assemblies are respectively installed on the inner outer surfaces of the mounting plates, and the two fixed plates are respectively installed at the inner ends of the stop assemblies.

[0009] A further improvement is that guide grooves are respectively opened on the left and right sides of the upper surface of the placement table, the transmission member is installed inside the guide groove and slidably connected to the inner wall of the guide groove, the electromagnetic interferer is placed on the placement table inside the protective box, and then the bidirectional motor is started to drive the screw in the transmission member to rotate inside the bearing, thereby driving the threaded slide on the screw to slide relatively inside the guide groove, thereby driving the two fixed plates to slide relatively to fix the electromagnetic interferer on the placement table, thereby better protecting the electromagnetic interferer.

[0010] A further improvement is that the stop assembly includes a sleeve, a flexible spring, a sliding rod, and an electric contact. The sleeve is installed on the top of the inner end of the mounting plate, the flexible spring is installed on the inner wall of the sleeve, the sliding rod is fixedly connected to the outer end of the flexible spring and is slidably connected to the inner wall of the sleeve, and the two electric contacts are respectively installed on the inner wall of the sleeve and the inner end of the sliding rod. When the fixed plate contacts the outer surface of the electromagnetic interferer, the thrust generated pushes the sliding rod to slide toward the inside of the sleeve and squeezes the flexible spring until the two electric contacts contact each other, thereby sending an electrical signal to stop the bidirectional motor and avoid damage to the electromagnetic interferer caused by excessive clamping.

[0011] A further improvement is that a lift is installed at the bottom of the protective box, and the top of the lift is connected to the placement table. When the electromagnetic jammer is needed, the lift is started to push the placement table to the top of the protective box, thereby exposing the electromagnetic jammer, making it easier to use the electromagnetic jammer and preventing the protective box from blocking the signal of the electromagnetic jammer.

[0012] A further improvement is that a sealed box door is hinged on the top of the protective box, a locking piece is installed at the connection between the sealed box door and the protective box, and a handle is fixedly connected to the top center of the sealed box door. The sealed box door and the protective box are locked by the locking piece, and the protective box and the electromagnetic jammer inside can be taken away by lifting the handle, which is more convenient to carry and can continue to provide protection for the electromagnetic jammer.

[0013] A further improvement is that rubber pads are respectively installed on the bottom of the sealed box door and the inner side of the fixed plate. The provision of the rubber pads can play a certain buffering role and better protect the electromagnetic interference device.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The electromagnetic jammer device places the electromagnetic jammer on a placement table inside the protective box, and then starts the bidirectional motor to drive the screw in the transmission part to rotate inside the bearing, thereby driving the threaded slide on the screw to slide relatively inside the guide groove, thereby driving the two fixed plates to slide relatively to fix the electromagnetic jammer on the placement table, thereby better protecting the electromagnetic jammer.

[0016] 2. For the electromagnetic jammer device, when the fixing plate contacts the outer surface of the electromagnetic jammer, the thrust generated pushes the slide bar to slide toward the inside of the sleeve and squeezes the flexible spring until the two electrical contacts contact each other, thereby sending an electrical signal to stop the bidirectional motor and avoid damage to the electromagnetic jammer caused by excessive clamping.

[0017] 3. When the electromagnetic jammer is needed, the lift is started to push the placement table to the top of the protection box, thereby exposing the electromagnetic jammer, making it easier to use the electromagnetic jammer and preventing the protection box from blocking the signal of the electromagnetic jammer. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a top view schematic diagram of the internal structure of the utility model;

[0019] Figure 2 This is a schematic cross-sectional structural diagram of the protection box of the utility model;

[0020] Figure 3 This is a schematic cross-sectional view of the protective device of the utility model;

[0021] Figure 4 For the utility model Figure 3 Schematic diagram of the cross-sectional structure at point A in the middle.

[0022] In the figure: 1. protective box; 2. electromagnetic interference device; 301. placement table; 302. bidirectional motor; 303. transmission part; 304. mounting plate; 305. stop assembly; 3051. sliding sleeve; 3052. flexible spring; 3053. sliding rod; 3054. electrical contact; 306. fixing plate; 307. lifter; 401. sealed box door; 402. locking part; 403. handle. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-Figure 4 , the utility model provides a technical solution:

[0025] Embodiment 1:

[0026] An electromagnetic jammer device comprises a protection box 1 and an electromagnetic jammer 2. The electromagnetic jammer 2 is placed inside the protection box 1. A protection device is arranged inside the protection box 1.

[0027] The protective device includes a placing table 301, a bidirectional motor 302, a transmission member 303, a mounting plate 304, a stop assembly 305, and a fixed plate 306. The placing table 301 is installed inside the protective box 1, the bidirectional motor 302 is installed at the inner center of the placing table 301, two groups of transmission members 303 are respectively installed at the left and right output ends of the bidirectional motor 302, two mounting plates 304 are respectively installed at the top of the transmission member 303, two groups of stop assemblies 305 are respectively installed on the inner and outer surfaces of the mounting plate 304, and two fixed plates 306 are respectively installed at the inner ends of the stop assemblies 305.

[0028] Guide grooves are respectively provided on the left and right sides of the upper surface of the placement table 301, and the transmission member 303 is installed inside the guide groove and slidably connected to the inner wall of the guide groove. The electromagnetic interferer 2 is placed on the placement table 301 inside the protective box 1, and then the bidirectional motor 302 is started to drive the screw in the transmission member 303 to rotate inside the bearing, thereby driving the threaded slide on the screw to slide relatively inside the guide groove, thereby driving the two fixed plates 306 to slide relatively to fix the electromagnetic interferer 2 on the placement table 301, thereby better protecting the electromagnetic interferer 2.

[0029] The stop assembly 305 includes a sleeve 3051, a flexible spring 3052, a slide bar 3053, and an electrical contact 3054. The sleeve 3051 is installed on the top of the inner end of the mounting plate 304, the flexible spring 3052 is installed on the inner wall of the sleeve 3051, the slide bar 3053 is fixedly connected to the outer end of the flexible spring 3052, and is slidably connected to the inner wall of the sleeve 3051, and two electrical contacts 3054 are respectively installed on the inner wall of the sleeve 3051 and the inner end of the slide bar 3053. When the fixed plate 306 contacts the outer surface of the electromagnetic interferer 2, the thrust generated pushes the slide bar 3053 to slide toward the inside of the sleeve 3051 and squeezes the flexible spring 3052 until the two electrical contacts 3054 contact each other, thereby sending an electrical signal to stop the bidirectional motor 302 from running, thereby avoiding damage to the electromagnetic interferer 2 caused by excessive clamping.

[0030] A sealed box door 401 is hinged at the top of the protective box 1, and a locking piece 402 is installed at the connection between the sealed box door 401 and the protective box 1. A handle 403 is fixedly connected to the top center of the sealed box door 401. The sealed box door 401 and the protective box 1 are locked by the locking piece 402, and then the protective box 1 and the electromagnetic interferer 2 inside it can be taken away by lifting the handle 403, which is more convenient to carry and can continue to provide protection for the electromagnetic interferer 2.

[0031] Rubber pads are installed on the bottom of the sealed box door 401 and the inner side of the fixed plate 306 respectively. The rubber pads can play a certain buffering role and better protect the electromagnetic interference device 2.

[0032] Embodiment 2:

[0033] On the basis of Example 1, a lift 307 is installed at the bottom of the protective box 1, and the top of the lift 307 is connected to the placement table 301. When the electromagnetic interferer 2 is needed, the lift 307 is started to push the placement table 301 to the top of the protective box 1, thereby exposing the electromagnetic interferer 2, making it easier to use the electromagnetic interferer 2 and preventing the protective box 1 from blocking the signal of the electromagnetic interferer 2.

[0034] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

Claims

1. An electromagnetic interference device, comprising a protection box (1) and an electromagnetic interference device (2), wherein the electromagnetic interference device (2) is placed inside the protection box (1), characterized in that: A protective device is provided inside the protective box (1); The protective device comprises a placement table (301), a bidirectional motor (302), a transmission member (303), a mounting plate (304), a stop assembly (305), and a fixed plate (306); the placement table (301) is mounted inside the protective box (1); the bidirectional motor (302) is mounted at the inner center of the placement table (301); two groups of the transmission members (303) are respectively mounted on the left and right output ends of the bidirectional motor (302); two mounting plates (304) are respectively mounted on the top of the transmission member (303); two groups of the stop assemblies (305) are respectively mounted on the inner outer surfaces of the mounting plate (304); and two fixed plates (306) are respectively mounted on the inner ends of the stop assemblies (305).

2. An electromagnetic interference device according to claim 1, characterized in that: The left and right sides of the upper surface of the placement platform (301) are respectively provided with guide slots, and the transmission member (303) is installed inside the guide slots and is slidably connected to the inner wall of the guide slots.

3. An electromagnetic interference device according to claim 1, characterized in that: The stop assembly (305) comprises a sliding sleeve (3051), a flexible spring (3052), a sliding rod (3053), and an electric contact (3054); the sliding sleeve (3051) is mounted on the inner end top of the mounting plate (304); the flexible spring (3052) is mounted on the inner wall of the sliding sleeve (3051); the sliding rod (3053) is fixedly connected to the outer end of the flexible spring (3052) and slidably connected to the inner wall of the sliding sleeve (3051); and the two electric contacts (3054) are respectively mounted on the inner wall of the sliding sleeve (3051) and the inner end of the sliding rod (3053).

4. An electromagnetic interference device according to claim 1, characterized in that: A lift (307) is installed at the bottom of the protection box (1), and the top of the lift (307) is connected to the placement platform (301).

5. The electromagnetic interference device according to claim 1, characterized in that: The top of the protection box (1) is hinged with a sealed box door (401), a locking piece (402) is installed at the connection between the sealed box door (401) and the protection box (1), and a handle (403) is fixedly connected to the center of the top of the sealed box door (401).

6. An electromagnetic interference device according to claim 5, characterized in that: Rubber cushions are installed on the bottom of the sealed box door (401) and the inner side of the fixed plate (306) respectively.

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