Electromagnetic interference shielding device

Abstract

The utility model provides an electromagnetic interference shielding device, which relates to the technical field of electromagnetic signal shielding, and comprises a machine body, a heat dissipation fan and a protection assembly, and the machine body is provided with an accommodating cavity and a heat dissipation opening which are communicated with each other. The heat dissipation fan is arranged in the containing cavity and can blow air towards the heat dissipation opening. The protection assembly comprises a fixing frame, a rotating shaft and a covering plate, the fixing frame is connected with the machine body, the rotating shaft is connected with the fixing frame, the covering plate is rotationally connected with the rotating shaft, the cooling fan can drive the covering plate to rotate to open the cooling opening through wind power when blowing air towards the cooling opening, and the covering plate can cover the cooling opening when the cooling fan stops working. When the cooling fan blows air outwards, thrust can be applied to the covering plate, so that the covering plate rotates relative to the rotating shaft, the covering plate is blown up, hot air in the machine body is blown out by the cooling fan, when the cooling fan stops rotating, the covering plate shields the air outlet again, and insects can be prevented from entering the machine body to lay eggs to damage an internal mainboard; therefore, the protection performance of the interior of the machine body is improved.

Description

Technical Field

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

[0002] Electromagnetic interference shielding device is a device used to reduce or shield electromagnetic radiation interference. In modern society, the widespread use of electronic devices has led to the widespread existence of electromagnetic radiation interference problems, which will affect the normal operation of other devices and may even cause damage to the equipment.

[0003] After searching, the patent document with the existing application number CN202223411899.5 discloses a wireless signal blocker, including a wireless signal blocker body and a shielding system, wherein support blocks are welded on the front and rear sides of the wireless signal blocker body, a circuit integrated board is bolted on the top of the support block, and a quick-connect plug is provided on the rear side of the wireless signal blocker body. By arranging the wireless signal blocker body, the shielding system, the support block, the circuit integrated board and the quick-connect plug, the support block inside the wireless signal blocker body supports the circuit integrated board and provides a fixed position, and the shielding system is welded at various positions on the top of the circuit integrated board. When in use, the wireless signal blocker body is first placed in a safe position to ensure the stability of the wireless signal blocker body, and then the quick-connect plug on the rear side of the wireless signal blocker body is plugged into the socket.

[0004] However, the wireless signal jammer still has defects, for example, its heat dissipation port is not blocked, and in places with many mosquitoes, insects such as geckos and flies may enter the box and lay eggs, thus affecting the normal operation of the jammer. Utility Model Content

[0005] The purpose of the utility model is to overcome the above technical deficiencies, propose an electromagnetic interference shielding device, solve the problem that the heat dissipation port of the wireless signal shielding device in the prior art is not blocked, and insects such as geckos and flies may enter the box body to lay eggs in places with many mosquitoes, thereby affecting the normal operation of the shielding device, and provide an electromagnetic interference shielding device.

[0006] The utility model provides an electromagnetic interference shielding device, comprising:

[0007] The body is provided with a communicating accommodation cavity and a heat dissipation port;

[0008] a heat dissipation fan, the heat dissipation fan being disposed in the accommodating cavity and capable of blowing air toward the heat dissipation port; and

[0009] The protective component includes a fixed frame, a rotating shaft and a cover plate, wherein the fixed frame is connected to the body, the rotating shaft is connected to the fixed frame, and the cover plate is rotatably connected to the rotating shaft. When the cooling fan blows air toward the cooling port, the wind force drives the cover plate to rotate and open the cooling port, and the cover plate can cover the cooling port when the cooling fan stops working.

[0010] In one of the embodiments, there are multiple cover plates, and the multiple cover plates jointly cover the heat dissipation port when the heat dissipation fan stops working; when the heat dissipation fan blows air toward the heat dissipation port, at least one of the cover plates rotates to open the heat dissipation port.

[0011] In one of the embodiments, a fixing bar is provided at the upper end of the fixing frame, and the fixing bar is fixed to the surface of the body by screws on the left and right sides of the front end.

[0012] In one of the embodiments, the fixing frame and the fixing strip are both made of plastic, the covering plate is made of a transparent plastic plate with a thickness of one millimeter, and the covering plate is fixed to the surface of the hollow tube by bonding.

[0013] In one of the embodiments, a plurality of threaded holes are equidistantly arranged on the upper end of the body, a connecting head is screwed into each of the threaded holes, a signal rod is arranged on the upper end of the connecting heads, and the signal rods are screwed into the threaded holes through the connecting heads to be connected to the mainboard in the body.

[0014] In one of the embodiments, the body is provided with a switch button, and the switch button is used to control the on and off of the power of the device, and a power slot is provided at the lower side of the switch button.

[0015] In one of the embodiments, fixing plates are provided at the rear edges of the left and right ends of the machine body, fixing holes are provided on the surfaces of the fixing plates, and the machine body is fixed to the wall through the fixing holes on the surfaces of the fixing plates.

[0016] In one of the embodiments, a plurality of air inlet holes are disposed at the front end of the machine body, and the plurality of air inlet holes are arranged in an array.

[0017] The utility model also proposes an electromagnetic interference shielding device including the structure in the above-mentioned embodiment, wherein the fixing frame at the lower end of the fixing strip is fixed to the front side of the heat dissipation port at the front end of the machine body by screws, and when the temperature of the mainboard in the machine body is high, the heat dissipation fan in the machine body will be turned on, and when the heat dissipation fan blows outward, it will apply thrust to the shielding plate, so that the shielding plate rotates relative to the rotating shaft, so that the shielding plate that vertically blocks the heat dissipation port downward is blown up, and the hot air in the machine body is blown outward by the heat dissipation fan, and when the heat dissipation fan stops rotating, the shielding plate will be driven by its own weight to rotate downward to block the air outlet again, and the shielding plate that can be opened and closed to block the heat dissipation port can prevent insects such as geckos and flies from entering the machine body to lay eggs and damage the internal mainboard, thereby increasing the protection of the internal part of the machine body and reducing the possibility of equipment failure. In addition, the shielding plate can be blown up when heat dissipation is required, without affecting the heat dissipation of the shielding device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of an electromagnetic interference shielding device of the utility model;

[0019] Figure 2 This is a schematic diagram of the disassembled structure of an electromagnetic interference shielding device of the utility model;

[0020] Figure 3 This is a schematic diagram of the lower end planar structure of an electromagnetic interference shielding device of the utility model;

[0021] Figure 4 This is a schematic diagram of the connection structure between the cover plate and the fixed frame of the utility model;

[0022] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0023] In the figure: 1. fixing frame; 2. hollow tube; 3. body; 4. threaded hole; 5. connector; 6. signal rod; 7. switch button; 8. fixing hole; 9. fixing plate; 10. power slot; 11. heat dissipation port; 12. screw; 13. cooling fan; 14. shaft; 15. cover plate; 16. screw; 17. fixing strip; 18. air inlet; 19. baffle. DETAILED DESCRIPTION

[0024] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described clearly and completely below in conjunction with the accompanying drawings. Obviously, the specific details described below are only part of the embodiments of the utility model, and the utility model can also be implemented in many other embodiments different from those described here. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the protection scope of the utility model.

[0025] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0027] Please refer to Figure 1-4 The utility model provides an electromagnetic interference shielding device, including a body 3, a heat dissipation fan 13 and a protective component. The body 3 is provided with a connected accommodation cavity and a heat dissipation port 11. The accommodation cavity is used to accommodate electronic components. The accommodation cavity is connected to the outside through the heat dissipation port 11, so that the heat generated by the electronic components when working can be dissipated to the outside through the heat dissipation port 11. The heat dissipation fan 13 is arranged in the accommodation cavity and close to the heat dissipation port 11, and the heat dissipation fan 13 can blow air toward the heat dissipation port 11 to send out the heat of the accommodation cavity.

[0028] The protective component includes a fixed frame 1, a rotating shaft 14 and a cover plate 15. The fixed frame 1 is connected to the body 3, the rotating shaft 14 is connected to the fixed frame 1, and the cover plate 15 is rotatably connected to the rotating shaft 14. When the cooling fan 13 blows air toward the cooling port 11, the wind force drives the cover plate 15 to rotate and open the cooling port 11, and the cover plate 15 can cover the cooling port 11 when the cooling fan 13 stops working.

[0029] Two heat dissipation ports 11 are provided at the front end of the body 3. A blocking net 19 is fixed at the front end of the two heat dissipation ports 11 by screws 12. The blocking net 19 has a hole structure and does not affect the heat dissipation of the accommodating cavity. When the protective component is disassembled, the blocking net 19 can be used to prevent larger animals from entering the accommodating cavity. In other embodiments, the blocking net 19 may not be provided, and only the protective component may be provided to cover the heat dissipation port. Without the obstruction of the blocking net 19, the heat dissipation efficiency of the accommodating cavity can be further improved.

[0030] The body 3 is provided with a plurality of shielding plates 15 at the front side of the heat dissipation port 11, and a hollow tube 2 is provided at the upper end of each of the shielding plates 15, and each hollow tube 2 is rotatably sleeved on the corresponding rotating shaft 14, so that the corresponding shielding plate 15 can rotate relative to the rotating shaft 14, and both ends of the rotating shaft 14 are fixedly connected to the fixed frame 1. By providing a plurality of shielding plates 15, the heat dissipation area can be increased. Compared with only providing a whole large-area shielding plate 15, the present embodiment provides a plurality of shielding plates 15 with a smaller area, so that the shielding plates 15 can be easily blown up by the heat dissipation fan 13, which is conducive to better heat dissipation of the accommodating cavity.

[0031] When the temperature of the mainboard in the body 3 is high, the cooling fan 13 in the body 3 will be turned on. When the cooling fan 13 blows air outwards, it will apply thrust to the cover plate 15, so that the cover plate 15 rotates on the rotating shaft 14 through the hollow tube 2, so that the cover plate 15 that vertically blocks the heat dissipation port 11 downwards is blown up, so that the hot air in the body 3 is blown outwards by the cooling fan 13. When the cooling fan 13 stops rotating, the cover plate 15 will be driven by its own weight to rotate downwards and continue to block the air outlet.

[0032] A fixing strip 17 is provided at the upper end of the fixing frame 1, and the fixing strip 17 is fixed to the surface of the body 3 by screws 16 on the left and right sides of the front end. The two fixing frames 1 and the fixing strip 17 are made of plastic, and the multiple covering plates 15 are made of a transparent plastic plate with a thickness of one millimeter. The multiple covering plates 15 are fixed to the surface of the hollow tube 2 by bonding.

[0033] The fixing frame 1 at the lower end of the fixing strip 17 is fixed to the front side of the heat dissipation port 11 at the front end of the body 3 by screws 16, and the cover plate 15 with a thickness of one millimeter is lighter and can be blown up better when the heat dissipation fan 13 rotates.

[0034] A plurality of threaded holes 4 are equidistantly arranged at the upper end of the body 3 , and connectors 5 are screwed into the plurality of threaded holes 4 . Signal rods 6 are arranged on the upper ends of the plurality of connectors 5 , and the plurality of signal rods 6 are screwed into the threaded holes 4 through the connectors 5 to be connected to the mainboard in the body 3 .

[0035] The signal rod 6 is screwed into the threaded hole 4 through the connector 5 to be connected to the mainboard inside the body 3. The body 3 sends a signal through the signal rod 6 to shield nearby electromagnetic signals.

[0036] A switch button 7 is provided on the upper right side of the body 3, and the switch button 7 is used to control the on and off of the power supply of the device. A power slot 10 is provided on the lower side of the switch button 7, and the power slot 10 is used to connect the circuit to the device.

[0037] The power cord is plugged into the power socket 10 to power on the body 3 , and when the body 3 is powered on, the device can be turned on and off by the switch button 7 .

[0038] A fixing plate 9 is provided at the rear edges of the left and right ends of the body 3, and two fixing holes 8 are provided on the surfaces of the two fixing plates 9. The body 3 is fixed to the wall through the fixing holes 8 on the surfaces of the fixing plates 9. Two air inlet holes 18 are provided at the front end of the body 3, and the two air inlet holes 18 are used to increase air circulation inside and outside the body 3.

[0039] The machine body 3 is fixed to the wall by driving bolts into the fixing holes 8 on the surfaces of the fixing plates 9 at the left and right ends of the machine body 3 . When the cooling fan 13 blows air outward, the air inlet 18 delivers air into the machine body 3 .

[0040] The working principle of the utility model is as follows: the power cord is plugged into the power slot 10 to power on the body 3. When the body 3 is powered on, the on and off of the device can be controlled by the switch button 7. The signal rod 6 is screwed into the threaded hole 4 through the connector 5 to connect with the mainboard inside the body 3. The body 3 sends a signal through the signal rod 6 to shield nearby electromagnetic signals. When the temperature of the mainboard in the body 3 is high, the cooling fan 13 in the body 3 will be turned on. When the cooling fan 13 blows air outwards, a thrust will be applied to the cover plate 15, so that the cover plate 15 rotates on the rotating shaft 14 through the hollow tube 2, so that the cover plate 15 that vertically blocks the heat dissipation port 11 downwards is blown up, so that the hot air in the body 3 is blown outwards by the cooling fan 13, and when the cooling fan 13 blows air outwards, the air inlet 18 will transport air into the body 3. When the cooling fan 13 stops rotating, the cover plate 15 will be driven by its own weight to rotate downwards and continue to block the air outlet.

[0041] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several deformations, substitutions and improvements can be made without departing from the concept of the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model patent should be based on the claims.

Claims

1. An electromagnetic interference shielding device, characterized in that: include: The body is provided with a communicating accommodation cavity and a heat dissipation port; A heat dissipation fan, which is disposed in the accommodating cavity and can blow air toward the heat dissipation port; as well as The protective component includes a fixed frame, a rotating shaft and a cover plate, wherein the fixed frame is connected to the body, the rotating shaft is connected to the fixed frame, and the cover plate is rotatably connected to the rotating shaft. When the cooling fan blows air toward the cooling port, the wind force drives the cover plate to rotate and open the cooling port, and the cover plate can cover the cooling port when the cooling fan stops working.

2. The electromagnetic interference shielding device according to claim 1, characterized in that: There are multiple cover plates, and the multiple cover plates jointly cover the heat dissipation port when the heat dissipation fan stops working; when the heat dissipation fan blows air toward the heat dissipation port, at least one of the cover plates rotates to open the heat dissipation port.

3. The electromagnetic interference shielding device according to claim 1, characterized in that: A fixing bar is arranged on the upper end of the fixing frame, and the fixing bar is fixed to the surface of the machine body by screws on the left and right sides of the front end.

4. The electromagnetic interference shielding device according to claim 3, characterized in that: The fixing frame and the fixing strip are both made of plastic, the covering plate is made of a transparent plastic plate with a thickness of one millimeter, and the covering plate is fixed on the surface of the hollow tube by bonding.

5. The electromagnetic interference shielding device according to claim 1, characterized in that: A plurality of threaded holes are equidistantly arranged on the upper end of the body, and connectors are screwed into the plurality of threaded holes. Signal rods are arranged on the upper ends of the plurality of connectors, and the plurality of signal rods are screwed into the threaded holes through the connectors to be connected to the mainboard in the body.

6. The electromagnetic interference shielding device according to claim 5, characterized in that: The machine body is provided with a switch button, and the switch button is used to control the connection and disconnection of the power supply of the device. A power slot is provided at the lower side of the switch button.

7. The electromagnetic interference shielding device according to claim 6, characterized in that: The rear edges of the left and right ends of the machine body are provided with fixing plates, the surfaces of the fixing plates are provided with fixing holes, and the machine body is fixed on the wall through the fixing holes on the surfaces of the fixing plates.

8. The electromagnetic interference shielding device according to claim 7, characterized in that: The front end of the machine body is provided with a plurality of air inlet holes, and the plurality of air inlet holes are arranged in an array.

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