Military ventilation shielding fastening bolt

Abstract

The utility model provides a military ventilation shielding fastening bolt, and relates to the technical field of ventilation shielding, the military ventilation shielding fastening bolt comprises a bolt body, a shell of military equipment penetrates through the bolt body in a threaded mode, and a ventilation hole is formed in the bolt body in the axial direction in a penetrating mode; and the plurality of cut-off waveguide tubes are positioned in the ventilation holes, so that air convection can be generated inside and outside the equipment, and electromagnetic waves can be shielded at the same time. According to the application, the military equipment does not need to be subjected to windowing design, and the plurality of cut-off waveguide tubes can be quickly and stably mounted on the military equipment only through the bolt body, so that the ventilation and shielding effects on the military equipment are realized.

Description

Technical Field

[0001] The present application relates to the technical field of ventilation shielding, and in particular to a military ventilation shielding fastening bolt. Background Art

[0002] Conventional equipment needs to open windows or holes in order to balance the pressure difference between the inside and outside of the equipment to allow air convection between the inside of the equipment and the external environment. Military products also require that the equipment must meet relevant requirements for electromagnetic compatibility, that is, the equipment will not fail or performance will be degraded due to electromagnetic interference from the external environment, and the internal information of the equipment will not be leaked.

[0003] Conventional military equipment uses honeycomb waveguide plates for ventilation and shielding, but honeycomb waveguide plates are limited by size and thickness. For example, the thickness of honeycomb waveguide plates is generally required to be no less than 5mm, and they also need to be customized according to the window size of the equipment. Therefore, their application in small-sized wind nozzles or tubular structures is limited. Therefore, it is urgent to develop corresponding products to solve the electromagnetic shielding and ventilation problems in these special applications. Utility Model Content

[0004] In order to improve the problem that conventional honeycomb waveguide plates are difficult to be conveniently and stably applied to military equipment for ventilation and shielding, the present application provides a military ventilation and shielding fastening bolt.

[0005] The military ventilation shielding fastening bolt provided in this application adopts the following technical solution:

[0006] A military ventilation shield fastening bolt, comprising

[0007] A bolt body is threadedly inserted into a shell of a military device, and a ventilation hole is formed in the bolt body along its axial direction; and

[0008] Several cutoff waveguide tubes are located in the ventilation holes, which can generate air convection inside and outside the equipment and also shield electromagnetic waves.

[0009] Furthermore, a plurality of the cutoff waveguide tubes are provided, and the plurality of cutoff waveguide tubes are connected to each other in parallel to form a honeycomb waveguide plate in the ventilation hole.

[0010] Furthermore, the cross section of the cutoff waveguide is configured to be hexagonal.

[0011] Furthermore, the length direction of the honeycomb waveguide plate is consistent with the length direction of the bolt body.

[0012] Furthermore, a washer is sleeved on the screw rod of the bolt body, which can seal and shield the gap between the equipment housing and the head of the bolt body.

[0013] Furthermore, the gasket is made of conductive rubber.

[0014] Furthermore, the head of the bolt body is configured to be hexagonal.

[0015] Furthermore, the inner diameter of the washer is not less than the diameter of the screw on the bolt body, and the outer diameter of the washer is not greater than the diameter of the inscribed circle corresponding to the hexagonal head of the bolt body.

[0016] In summary, the present application includes at least one of the following beneficial technical effects:

[0017] 1. Bolts are standard parts that can be threaded through and installed on the shell of military equipment. The bolt body is used as a carrier of several cutoff waveguides, so that several cutoff waveguides can be quickly and stably installed on the military equipment without window design of the military equipment;

[0018] 2. The gasket is made of conductive rubber, and the head of the bolt body is pressed against the outer casing of the military equipment by the gasket, so that the gasket can seal and shield the gap between the equipment casing and the head of the bolt body, which can not only effectively block the overflow of electromagnetic waves inside the military equipment, but also enable the bolt body to be installed on the shell of the military equipment more stably, thereby making the bolt body with the honeycomb waveguide plate have better anti-seismic performance when installed on the shell of the military equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0021] Figure 2 It is a schematic diagram of the structure of the bolt body and the washer in the embodiment of the present application.

[0022] Figure numerals: 1. bolt body; 2. ventilation hole; 3. cutoff waveguide; 4. gasket. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] The application embodiment discloses a military ventilation shield fastening bolt. Figure 1 and Figure 2 The military ventilation shielding fastening bolt includes a bolt body 1 and a plurality of cutoff waveguide tubes 3. A ventilation hole 2 is provided on the bolt body 1 along its axial direction, and the plurality of cutoff waveguide tubes 3 are stably installed in the ventilation hole 2. Considering that the environment in which military equipment is used is relatively harsh, it is necessary to stably install the cutoff waveguide tube 3 on the military equipment; and the bolt, as a standard part, can be threaded through and installed on the shell of the military equipment, so the bolt body 1 is used as a carrier of the plurality of cutoff waveguide tubes 3, so that the plurality of cutoff waveguide tubes 3 can be quickly and stably installed on the military equipment without the need for window design of the military equipment. Through the cutoff waveguide tube 3, the air inside and outside the military equipment can achieve stable convection, and at the same time, the cutoff waveguide tube 3 can also perform good electromagnetic wave shielding on the military equipment, effectively preventing the leakage of information inside the equipment.

[0025] Since the cutoff waveguide 3 is installed in the ventilation hole 2 of the bolt body 1, in order to allow the internal and external air of the military equipment to circulate quickly and improve the ventilation effect of the military equipment, refer to Figure 1 and Figure 2 , there are multiple cutoff waveguide tubes 3 in the ventilation hole 2, and the multiple cutoff waveguide tubes 3 are connected in parallel to each other, and a honeycomb waveguide plate is formed in the ventilation hole 2. The cross section of the cutoff waveguide tube 3 can be circular, square, triangular, hexagonal, etc. In the embodiment of the present application, the cross section of the cutoff waveguide tube 3 is set to be hexagonal, so that the honeycomb waveguide plate can form a larger ventilation area, which is conducive to the rapid circulation of air inside and outside the military equipment. In order to reduce the large noise generated when the air circulates in the cutoff waveguide tube 3, the length direction of the cutoff waveguide tube 3 is consistent with the length direction of the bolt body 1, and the inner wall of the cutoff waveguide tube 3 is passivated and polished, which can effectively reduce the noise generated by the collision of the air with the inner wall of the cutoff waveguide tube 3 when the air circulates in the cutoff waveguide tube 3.

[0026] When the bolt body 1 with the honeycomb waveguide plate is installed on the shell of the military equipment, since the bolt body 1 and the shell of the military equipment are threadedly connected, some electromagnetic waves may overflow from the threaded holes between the bolt body 1 and the shell of the military equipment. In order to improve the shielding effect of electromagnetic waves of the military equipment, refer to Figure 1 and Figure 2, a washer 4 is sleeved on the screw of the bolt body 1. The washer 4 is made of conductive rubber. The inner diameter of the washer 4 is not less than the diameter of the screw on the bolt body 1, so that the washer 4 can be quickly and without damage on the screw of the bolt body 1; to prevent the washer 4 from slipping off on the bolt body 1, the washer 4 is stably bonded to the head of the bolt body 1 through the conductive adhesive. When the bolt body 1 is tightened on the shell of the military equipment, the washer 4 is pressed against the shell of the military equipment by the head of the bolt body 1, so that the washer 4 can perform water vapor sealing and electromagnetic shielding on the gap between the equipment shell and the head of the bolt body 1. The washer 4 can not only effectively block the overflow of electromagnetic waves inside the military equipment, but also enable the bolt body 1 to be relatively stably installed on the shell of the military equipment, thereby enabling the bolt body 1 with the honeycomb waveguide plate to have better anti-seismic performance when installed on the shell of the military equipment.

[0027] Since the stability of the bolt body 1 installed on the military equipment will directly affect the performance of the honeycomb waveguide plate, Figure 1 and Figure 2 The head of the bolt body 1 is set to be non-circular. In the embodiment of the present application, the head of the bolt body 1 is set to be hexagonal, so that when the bolt body 1 is installed on the shell of the military equipment, the bolt body 1 can be quickly tightened to ensure that the bolt body 1 can be quickly and stably installed on the shell of the military equipment. In order to extend the service life of the washer 4 as much as possible and avoid the head of the bolt body 1 from causing pressure loss on the surface of the washer 4, the outer diameter of the washer 4 is not greater than the diameter of the inscribed circle corresponding to the hexagonal head of the bolt body 1, so that when the head of the bolt body 1 presses the washer 4 on the shell of the military equipment, no indentation will be generated on the surface of the washer 4 away from the military equipment.

[0028] The implementation principle of a military ventilation shielding fastening bolt in an embodiment of the present application is as follows: the bolt body 1 is processed so that a honeycomb waveguide plate is formed in the middle thereof. Then the washer 4 is sleeved on the screw of the bolt body 1, and the washer 4 is stably connected to the head of the bolt body 1. Then, according to the model and size of the screw on the bolt body 1, a threaded hole corresponding to it is opened on the shell of the military equipment. Finally, the bolt body 1 with the washer 4 and the honeycomb waveguide plate is tightened on the shell of the military equipment so that the head of the bolt body 1 presses the washer 4 against the shell of the military equipment. Through the cutoff waveguide tube 3 in the honeycomb waveguide plate, the internal and external air of the military equipment can achieve stable convection. At the same time, the cutoff waveguide tube 3 and the washer 4 made of conductive rubber can also perform good electromagnetic wave shielding on the military equipment, effectively preventing the leakage of information inside the equipment.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A military ventilation shield fastening bolt, characterized in that: include A bolt body is threadedly inserted into a shell of a military device, and a ventilation hole is formed in the bolt body along its axial direction; and Several cutoff waveguide tubes are located in the ventilation holes, which can generate air convection inside and outside the equipment and also shield electromagnetic waves.

2. The military ventilation shield fastening bolt according to claim 1, characterized in that: A plurality of the cutoff waveguide tubes are provided, and the plurality of cutoff waveguide tubes are connected in parallel to each other, and form a honeycomb waveguide plate in the ventilation hole.

3. The military ventilation shield fastening bolt according to claim 1, characterized in that: The cross section of the cutoff waveguide is arranged to be hexagonal.

4. The military ventilation shield fastening bolt according to claim 2, characterized in that: The length direction of the honeycomb waveguide plate is consistent with the length direction of the bolt body.

5. The military ventilation shield fastening bolt according to claim 1, characterized in that: A washer is sleeved on the screw rod of the bolt body, which can seal and shield the gap between the equipment housing and the head of the bolt body.

6. The military ventilation shield fastening bolt according to claim 5, characterized in that: The gasket is made of conductive rubber.

7. The military ventilation shield fastening bolt according to claim 5, characterized in that: The head of the bolt body is configured to be hexagonal.

8. The military ventilation shielding fastening bolt according to claim 7, characterized in that: The inner diameter of the washer is not less than the diameter of the screw on the bolt body, and the outer diameter of the washer is not greater than the diameter of the inscribed circle corresponding to the hexagonal head of the bolt body.

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