Airborne equipment protection device

Abstract

The airborne equipment protection device provided by the present application reduces the overall weight and strengthens the box's ability to withstand external forces through the overlapping protrusions formed by the regularly shaped reinforcing ribs on the outer side of the box; through the shielding conductive rubber strips arranged in the first groove and the second groove, when the front panel and the rear panel are installed on the end face of the box, the conductive oxidation treated surfaces of the front and rear panels press the shielding conductive rubber strips, and are fastened with screws to achieve the purpose of conductive continuity and prevent electromagnetic leakage; an installation box is installed on the fixed beams on the four walls of the box, and the installation box is divided into a first area and a second area by a partition. The electromagnetic isolation function is achieved by installing the partition, and the installation box is installed with screws to the chassis fixed beam, which additionally increases the structural strength of the box; one end of the outer bottom of the box is positioned by a positioning pin, and the other end is connected to the bracket by a lock, and a slide is installed on the contact surface between the bracket and the box, and the box is fixed by the bracket and the lock to achieve rapid disassembly.

Description

Technical Field

[0001] The present application relates to the field of power electronics technology, and in particular to an airborne equipment protection device. Background Art

[0002] Airborne equipment places high demands on reliability, maintainability, safety, adaptability, and economy. Electromagnetic interference is one of the main causes of failure or performance degradation in electrical and electronic airborne equipment, making it a significant factor in the unreliability of airborne equipment.

[0003] In order to improve the reliability of airborne equipment, the airborne protection equipment must have high structural strength, light weight, strong electromagnetic compatibility and other performance.

[0004] In the existing technology, stainless steel sheet metal processing is mostly used to make the chassis, reinforcement beams are welded to the chassis wall, beryllium bronze is installed at the chassis joints to prevent electromagnetic leakage, aluminum radiators are added inside to dissipate heat, high-voltage lines and signal lines are arranged in an interlaced manner inside, and current transformers, circuit boards, and transformers are installed and fixed separately.

[0005] However, in the existing chassis structure, the chassis is made of stainless steel sheet metal, reinforcement beams are welded to the chassis wall, aluminum radiators are added inside the chassis for heat dissipation, and the current transformer, circuit board, and transformer are installed and fixed separately. All of these lead to the overall size of the chassis being larger and the weight increasing. Beryllium bronze is installed at the overlap of the chassis to prevent electromagnetic leakage, but this method has low electromagnetic leakage prevention and electromagnetic shielding performance and cannot meet the use requirements under higher requirements. Summary of the Invention

[0006] The present application provides an airborne equipment protection device to solve the problems of the existing chassis structure being relatively large in size, having poor electromagnetic leakage prevention and electromagnetic shielding performance, and being unable to meet the use requirements under higher requirements.

[0007] The technical solutions adopted by this application to solve the above technical problems are as follows:

[0008] An airborne equipment protection device comprises a box body and a front panel and a rear panel connected to the box body, wherein each outer side surface of the box body is a concave structure, and the concave structure is provided with a nested protrusion formed by a plurality of regularly shaped reinforcing ribs;

[0009] A first groove is provided at the connection end surface between the box body and the front panel, and a second groove is provided at the connection end surface between the box body and the rear panel, wherein shielding conductive rubber strips are provided in both the first groove and the second groove;

[0010] An installation box is installed on the fixed beams on the four walls of the box body, and the installation box includes a first area where a sampling circuit board is provided, and a second area where a control circuit board is provided. The first area is close to the front panel of the box body, and the second area is close to the rear panel of the box body. A current transformer and a transformer are provided in the first area, and a partition is provided on a side of the second area close to the first area. A third groove is provided on the end surface where the first area is connected to the partition, and a shielding conductive rubber strip is provided in the third groove;

[0011] The outer bottom of the box body is connected with a bracket through a positioning pin and a locker, and a slideway is installed on the contact surface between the bracket and the box body.

[0012] Optionally, the regular shape includes a triangle, a rectangle and a circle.

[0013] Optionally, the front panel includes a first surface, a second surface, and a first edge surface between the first surface and the second surface, the first surface is a surface treated with conductive oxidation of aluminum alloy, the second surface and the first edge surface are surfaces sprayed with polyurethane semi-gloss magnetic paint, and the first surface is in contact with the box body.

[0014] Optionally, the front panel is equipped with a metal shell indicator light, a connector, a state conversion switch, a stainless steel handle, a tightening hook, a wire pressing plate and a wire pressing card, and a conductive rubber pad is installed between the connector and the front panel.

[0015] Optionally, the rear panel includes a third surface, a fourth surface and a second edge surface between the third surface and the fourth surface, the third surface is a surface treated with conductive oxidation of aluminum alloy, the fourth surface and the second edge surface are surfaces sprayed with polyurethane semi-gloss magnetic paint, and the third surface is in contact with the box body.

[0016] Optionally, a positioning sleeve and a copper grounding stud are installed on the rear panel.

[0017] Optionally, the entire surface of the installation box is formed by conductive oxidation treatment of aluminum alloy; the outer surface of the box is sprayed with polyurethane semi-gloss magnetic paint, and the inner surface of the box and the contact surface with the front panel and the rear panel are formed by conductive oxidation treatment of aluminum alloy.

[0018] Optionally, the outer surface of the bracket is formed by spraying polyurethane semi-gloss magnetic paint.

[0019] Optionally, a left mounting seat and a right mounting seat are connected to the bottom of the bracket, the bracket is fixed on a shock absorber, and the shock absorber is fixed at an airborne mounting position.

[0020] Optionally, a continuous tin-plated bare layer is provided around the control circuit board.

[0021] The technical solution provided by this application includes the following beneficial technical effects:

[0022] The present application provides an airborne equipment protection device, which includes a box body and a front panel and a rear panel connected to the box body. The overlapping protrusions formed by a number of regularly shaped reinforcing ribs in the concave structure of each outer side surface of the box body reduce the overall weight and enhance the box body's ability to withstand external forces. A first groove is provided at the connecting end surface of the box body and the front panel, and a second groove is provided at the connecting end surface of the box body and the rear panel. Shielding conductive rubber strips are provided in the first groove and the second groove. When the front panel and the rear panel are installed with the end surface of the box body, the conductive oxidation treated surfaces of the front and rear panels press the shielding conductive rubber strips, and screws are used to fasten them to achieve the purpose of continuous conduction and prevent electromagnetic leakage. An installation box is installed on the fixed beams of the four walls inside the box body, and the installation box includes a sampling The first area of the circuit board and the second area where the control circuit board is set, the first area is provided with a current mutual inductor and a transformer, the second area is provided with a partition on the side close to the first area, the first area is provided with a third groove on the end surface where the partition is connected, and a shielding conductive rubber strip is provided in the third groove. The first area and the second area achieve electromagnetic isolation function by installing the partition, and the installation box is installed with screws and the chassis fixing beam, which additionally increases the strength of the box; one end of the outer bottom of the box is positioned by a locating pin, and the other end is connected to the bracket by a locker, and a slide is installed on the contact surface between the bracket and the box, and the box is fixed by the bracket and the locker to achieve rapid disassembly of the box. When the product fails, the internal sampling part and the control part can be replaced as a whole, which is convenient for maintenance. The airborne equipment protection device provided by the present application has the functions of light weight, small size, spatial convection heat dissipation function, quick disassembly function, easy maintenance, etc., which solves the problems of the existing chassis structure that is large in size, has low anti-electromagnetic leakage performance and electromagnetic shielding performance, and cannot meet the use requirements under higher requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solution of the present application, the following is a brief introduction to the drawings required for use in the embodiments. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0024] Figure 1 A schematic diagram of the structural installation of an airborne equipment protection device provided in an embodiment of the present application;

[0025] Figure 2 This is a structural diagram of the chassis from a certain perspective in an embodiment of the present application;

[0026] Figure 3 This is a structural diagram of the chassis from another perspective in an embodiment of the present application;

[0027] Figure 4This is a schematic diagram of the installation structure of the installation box in the embodiment of the present application;

[0028] Figure 5 Figure 4 Schematic diagram of the installation structure of the second area of the middle installation box;

[0029] Figure 6 This is a schematic diagram of the bracket installation structure in an embodiment of the present application;

[0030] Figure 7 This is a structural diagram of the front panel at a certain viewing angle in an embodiment of the present application;

[0031] Figure 8 This is a structural diagram of the front panel from another perspective in an embodiment of the present application;

[0032] Figure 9 This is a structural diagram of the rear panel at a certain viewing angle in an embodiment of the present application;

[0033] Figure 10 This is a structural diagram of the rear panel from another perspective in an embodiment of the present application.

[0034] Description of reference numerals:

[0035] 1-Front panel, 2-Mounting box, 3-Box, 4-Rear panel, 5-Bracket, 6-Shielded conductive rubber strip, 11-Stainless steel handle, 12-First screw, 13-State conversion switch, 14-Fixing hook, 15-Connector, 16-Metal shell indicator light, 17-Second screw, 18-Conductive rubber pad, 19-Crimp plate, 20-Crimp card, 21-Sampling circuit board, 22-Current transformer, 23-Transformer, 24-Partition, 25-Control circuit board, 26-Third groove, 27-Third screw, 31-First groove, 32-Second groove, 33-Overlapping protrusion, 34-Fixed beam, 41-Location sleeve, 42-Copper grounding stud, 51-Locking device, 52-Left mounting seat, 53-Slide, 54-Right mounting seat, 55-Shock absorber, 56-Location pin. DETAILED DESCRIPTION

[0036] In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application; it is obvious that the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0037] Figure 1 This is a schematic diagram of the installation structure of an airborne equipment protection device provided by an embodiment. Figure 1As shown, the airborne equipment protection device provided in this embodiment is applied to protect airborne equipment, improving its reliability and preventing electromagnetic leakage and shielding. The airborne equipment protection device is lightweight, compact, provides spatial convection heat dissipation, is quick to disassemble, is easy to maintain, and has function indication. It also enables the simultaneous operation of the 400 Hz airborne power supply on the input side of connector 15 and the analog and digital circuits in the internal control circuit within both the time domain and spatial range.

[0038] like Figure 2 and Figure 3 As shown, in this embodiment, the airborne equipment protection device includes a box body 3 and a front panel 1 and a rear panel 4 connected to the box body 3. Each outer side surface of the box body 3 is a concave structure. The concave structure is provided with a nested protrusion 33 formed by a number of regularly shaped reinforcing ribs. The nested protrusion 33 formed by the regularly shaped reinforcing ribs reduces the overall weight and strengthens the box body's ability to withstand external forces. The regular shape can be set to a triangle, a rectangle, and a circle. As an implementation method, the embodiment of the present application provides an implementation method using a triangular nested reinforcement structure as an example, as shown in FIG. Figure 2 、 3 As shown, in this embodiment, a first groove 31 is provided on the connecting end surface of the box body 3 and the front panel 1, and a second groove 32 is provided on the connecting end surface of the box body 3 and the rear panel 4. Shielding conductive rubber strips 6 are provided in the first groove 31 and the second groove 32. When the front panel 1 and the rear panel 4 are installed on the end surface of the box body 3, the conductive oxidation treatment surfaces of the front and rear panels press the shielding conductive rubber strips, and are fastened with the first screw 12 to achieve the purpose of conductive continuity and prevent electromagnetic leakage.

[0039] like Figure 4 and Figure 5As shown, it is a schematic diagram of the installation structure of the installation box in this embodiment. The installation box 2 is installed on the fixed beam 34 of the four inner walls of the box body 3. As shown in the figure, the installation box 2 includes a first area where a sampling circuit board 21 is provided, and a second area where a control circuit board 25 is provided. As an implementation method of this embodiment, the first area of the installation box 2 is an onboard 400Hz power supply and an analog circuit sampling circuit board 21, and the second area is a control circuit board 25 (digital circuit data calculation processing area). The first area is close to the front panel 1 of the box body 3, and the second area is close to the rear panel 4 of the box body 3. In the first area A current transformer 22 and a transformer 23 are provided. A partition 24 is provided on the side of the second area close to the first area. A third groove 26 is provided on the end surface connecting the first area and the partition 24. A shielding conductive rubber strip 6 is provided in the third groove 26. The first area and the second area achieve electromagnetic isolation function by installing the partition 24. The installation box 2 is installed with the chassis fixing beam 34 by the third screw 27, which additionally increases the strength of the box. The installation box 2 and the partition 24 isolate the interference between the 400Hz power supply, analog circuits and digital circuits, meet the electromagnetic shielding requirements, and have good anti-electromagnetic leakage performance.

[0040] like Figure 6 This is a schematic diagram of the bracket installation in this embodiment. As shown in the figure, the outer bottom of the box body 1 is connected to the bracket 5 via a locating pin 56 and a lock 51. One end is positioned by the locating pin 56, and the other end is connected to the bracket 5 via the lock 51. The contact surface of the bracket 5 and the box body 3 is installed with a slide 53. The bracket 5, locating pin 56 and lock 51 are fixed to achieve rapid disassembly of the box body 3. When the product fails, the internal sampling part and control part can be replaced as a whole, which is convenient for maintenance. The bottom of the bracket 5 is fixed to the shock absorber 55 via the left mounting seat 52 and the right mounting seat 54. The shock absorber 55 is fixed to the airborne mounting position.

[0041] To address the issue of electrical continuity across various components, this embodiment employs a surface treatment method combining conductive and non-conductive materials for the front and rear panels and the housing, manufactured using a thick aluminum plate precision machining method. Specifically, the front panel 1 comprises a first surface, a second surface, and a first edge surface between the first and second surfaces. The first surface is treated with an aluminum alloy conductive oxidation treatment, while the second surface and the first edge surface are sprayed with polyurethane semi-gloss varnish. The first surface contacts the housing 3. The rear panel 4 comprises a third surface, a fourth surface, and a second edge surface between the third and fourth surfaces. The third surface is treated with an aluminum alloy conductive oxidation treatment, while the fourth surface and the second edge surface are sprayed with polyurethane semi-gloss varnish. The third surface contacts the housing 3. The entire surface of the mounting box 2 is treated with an aluminum alloy conductive oxidation treatment. The outer periphery of the housing 3 is sprayed with polyurethane semi-gloss varnish. The inner surface of the housing 3 and the contact surfaces with the front and rear panels 4 are treated with an aluminum alloy conductive oxidation treatment. The outer surface of the bracket 5 is sprayed with polyurethane semi-gloss varnish.

[0042] like Figure 7 and Figure 8 The figure shows the installation diagram of the structures on both sides of the front panel 1 of this embodiment. As shown in the figure, a rear-mounted metal shell indicator light 16 is installed on the front panel 1 to realize the function indication function; a front-mounted connector 15, a conductive rubber pad 18 and a state conversion switch 13 are installed between the connector 15 and the front panel 1, and components such as the conversion switch, input and output electrical connectors 15 are installed to realize the input and output functions; a stainless steel handle 11 is installed using a second screw 17 for easy manual operation; and a tightening hook 14 is installed using a screw and a lock 51. At the same time, a wire pressing plate 19 and a wire pressing clamp 20 are also installed on the front panel 1 to bind and secure the wire harness passing through the protective device.

[0043] like Figure 9 and Figure 10 As shown in FIG. 4 , the two sides of the rear panel 4 are schematically shown. Figure 8 A copper grounding stud 42 and a positioning sleeve 41 that is installed with screws and cooperates with the positioning pin 56 are installed on the rear panel 4.

[0044] In order to achieve the purpose of continuous conduction and prevent electromagnetic leakage, a continuous tin-plated bare layer is provided around the control circuit board 25.

[0045] The airborne equipment protection device provided in this embodiment utilizes a surface treatment method combining conductive and non-conductive materials for the front and rear panels and housing, addressing the issue of electrical continuity in various components. The reinforced rib structure on the housing's exterior not only reduces overall weight but also ensures overall strength and spatial radiation heat dissipation. The mounting box and partitions isolate interference between the 400Hz power supply, analog circuits, and digital circuits. This design not only provides heat dissipation and reinforcement, but also meets electromagnetic shielding requirements, providing excellent electromagnetic leakage protection.

[0046] It should be noted that relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variations thereof are intended to cover non-exclusive inclusion, so that an article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element.

[0047] The foregoing is merely a list of specific embodiments of the present application, intended to enable those skilled in the art to understand and implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to be construed in the broadest manner consistent with the principles and novel features disclosed herein.

[0048] It should be understood that the present application is not limited to the contents described above and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. An airborne equipment protection device, characterized in that: The invention comprises a box body (3) and a front panel (1) and a rear panel (4) connected to the box body (3); each outer side surface of the box body (3) is a concave structure; a nested protrusion (33) formed by a plurality of reinforcing ribs of regular shapes is provided inside the concave structure; the regular shapes include triangles, rectangles and circles; A first groove (31) is provided at the connection end surface between the box body (3) and the front panel (1), and a second groove (32) is provided at the connection end surface between the box body (3) and the rear panel (4), wherein shielding conductive rubber strips (6) are provided in both the first groove (31) and the second groove (32); An installation box (2) is installed on the fixed beams (34) on the four inner walls of the box (3), and the installation box (2) includes a first area on which a sampling circuit board (21) is provided, and a second area on which a control circuit board (25) is provided, the first area being close to the front panel (1) of the box (3), and the second area being close to the rear panel (4) of the box (3), a current transformer (22) and a transformer (23) being provided in the first area, a partition (24) being provided on a side of the second area close to the first area, a third groove (26) being provided on the end surface connecting the first area and the partition (24), and a shielding conductive rubber strip (6) being provided in the third groove (26); The outer bottom of the box body (3) is connected to a bracket (5) via a positioning pin (56) and a locker (51), and a slideway (53) is installed on the contact surface between the bracket (5) and the box body (3); A positioning sleeve (41) and a copper grounding stud (42) are installed on the rear panel (4), and the positioning sleeve (41) cooperates with the positioning pin (56); A fastening hook (14) is installed on the front panel (1), and the fastening hook (14) cooperates with the locking device (51).

2. The airborne equipment protection device according to claim 1, characterized in that: The front panel (1) comprises a first surface, a second surface and a first edge surface between the first surface and the second surface, the first surface being a surface subjected to conductive oxidation treatment of aluminum alloy, the second surface and the first edge surface being surfaces sprayed with polyurethane semi-gloss magnetic paint, and the first surface being in contact with the box body (3).

3. The airborne equipment protection device according to claim 1, characterized in that: The front panel (1) is equipped with a metal shell indicator light (16), a connector (15), a state conversion switch (13), a stainless steel handle (11), a wire pressing plate (19) and a wire pressing card (20), and a conductive rubber pad (18) is installed between the connector (15) and the front panel (1).

4. The airborne equipment protection device according to claim 1, characterized in that: The rear panel (4) comprises a third surface, a fourth surface and a second edge surface between the third surface and the fourth surface, the third surface is a surface treated with conductive oxidation of aluminum alloy, the fourth surface and the second edge surface are surfaces sprayed with polyurethane semi-gloss magnetic paint, and the third surface is in contact with the box body (3).

5. The airborne equipment protection device according to claim 1, characterized in that: The entire surface of the installation box (2) is a surface formed after being subjected to conductive oxidation treatment on an aluminum alloy; the outer surface of the box body (3) is a surface sprayed with polyurethane semi-gloss magnetic paint; the inner surface of the box body (3) and the contact surface with the front panel (1) and the rear panel (4) are surfaces subjected to conductive oxidation treatment on an aluminum alloy.

6. The airborne equipment protection device according to claim 1, characterized in that: The outer surface of the bracket (5) is formed by spraying polyurethane semi-gloss magnetic paint.

7. The airborne equipment protection device according to claim 1, characterized in that: The bottom of the bracket (5) is connected to a left mounting seat (52) and a right mounting seat (54), and the bracket (5) is fixed on a shock absorber (55), which is fixed at an onboard mounting position.

8. The airborne equipment protection device according to claim 1, characterized in that: A continuous tinned bare layer is provided around the control circuit board (25).

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