VPX case with electromagnetic shielding layer

Abstract

The utility model discloses a VPX case with an electromagnetic shielding layer, which is characterized in that a closed space is formed by side plates, a front plate, a rear plate, a bottom plate and a top plate, a conductive paint coating containing copper particles is sprayed on the outer side of each plate, a conductive rubber strip is filled at a seam, and a continuous conductive path is formed to realize preliminary electromagnetic shielding. The front plate is provided with an interface and an adaptive power supply filter, so that the input power supply can be filtered, and electromagnetic interference is reduced. An air inlet waveguide window mechanism is installed on the rear side of the front plate air inlet grille, a heat dissipation opening waveguide window mechanism is arranged at the rear plate heat dissipation through hole, waveguide net windows of the two waveguide window mechanisms allow air to pass through for heat dissipation, meanwhile electromagnetic wave leakage is restrained, mounting and dismounting are convenient through a magnetic attraction structure, and the shielding performance of the joint is enhanced through a conductive part. The case is provided with grounding machine feet and rubber columns for insulation and shock absorption, the grounding columns guide static electricity and electromagnetic interference into the ground, the electromagnetic compatibility is improved, the comprehensive performance of the case is good, and various use requirements are met.

Description

TECHNICAL FIELD

[0001] The utility model relates to electronic equipment field, concretely relates to a VPX case with electromagnetic shielding layer. BACKGROUND

[0002] As the key carrier of high-performance electronic equipment, VPX case is widely used in military, aerospace and communication fields. Its core requirement is to provide a stable operating environment for internal electronic modules, especially to solve the contradiction between electromagnetic compatibility and heat dissipation efficiency.

[0003] The conventional case with insufficient electromagnetic shielding performance usually adopts a metal plate splicing structure, which can provide basic shielding but is prone to form electromagnetic leakage paths at the joints. High-performance electronic modules (such as VPX blades) have a power consumption of hundreds of watts, requiring forced air cooling or liquid cooling for heat dissipation. However, traditional heat dissipation solutions such as axial flow fans directly blowing can cause airflow turbulence inside the case, forming local hot spots. If the design of the heat dissipation holes does not consider the electromagnetic cutoff characteristics, it may become the main channel for electromagnetic leakage. Therefore, the technical personnel in this field have proposed a VPX case with electromagnetic shielding layer. SUMMARY

[0004] The purpose of the utility model is to provide a VPX case with electromagnetic shielding layer to solve the problems mentioned in the background technology. In order to solve the drawbacks and defects described in the background technology, the technical solution has the following contents:

[0005] A VPX case with electromagnetic shielding layer, which comprises a case structure, the case structure includes a case bottom plate located at the bottom, case side plates fixed on the upper surface of the case bottom plate on both sides, and case front and rear plates fixed on the upper surface of the case bottom plate on both sides, the top of the case front plate, the case rear plate and the case side plate is fixed with a case top plate, the bottom surface of the case bottom plate is installed with grounding feet at the four corners; and the outer side wall of the case rear plate is installed with a heat dissipation port waveguide window mechanism, and the inner side wall of the case front plate is installed with two air inlet waveguide window mechanisms;

[0006] The heat dissipation port waveguide window mechanism comprises a frame, a honeycomb core waveguide fixed inside the frame, and a square magnetic ring fixed on the front side wall of the frame, and a conductive gasket is fixed on the front side surface of the square magnetic ring;

[0007] The grounding feet comprise a rubber column and a grounding column penetratingly fixed in the inner cavity of the rubber column.

[0008] The air inlet waveguide window mechanism comprises a waveguide net window, a rectangular magnetic frame fixed in front of the waveguide net window, and a conductive rubber frame fixed on the front side surface of the rectangular magnetic frame.

[0009] As one preferred scheme of the utility model: the front side end face of the case front plate is provided with multiple interfaces, the rear side side wall of the case front plate is provided with a power filter matched with the interface.

[0010] As one preferred scheme of the utility model: the left and right sides of the front side side wall of the case front plate are provided with an air inlet grille, and the air inlet waveguide window mechanism is located at the rear side of the air inlet grille.

[0011] As one preferred scheme of the utility model: the rear side of the case rear plate is provided with multiple heat dissipation through holes, and the heat dissipation opening waveguide window mechanism is located at the rear side of the heat dissipation through hole and covers the heat dissipation through hole.

[0012] As one preferred scheme of the utility model: the magnetism of the square magnetic ring is attracted to the rear side side wall of the case rear plate, and the front side end face of the conductive gasket is in contact with the rear side side wall of the case rear plate.

[0013] As one preferred scheme of the utility model: the magnetism of the rectangular magnetic frame is attracted to the rear side side wall of the case front plate, and the front side end face of the conductive rubber frame is in contact with the rear side side wall of the case front plate.

[0014] As one preferred scheme of the utility model: the outer wall surface of the case side plate, the case front plate, the case rear plate, the case bottom plate and the case top plate is sprayed with a conductive paint coating containing copper particles, and the joint position between the case side plate, the case front plate, the case rear plate, the case bottom plate and the case top plate is filled with a conductive rubber strip.

[0015] As one preferred scheme of the utility model: the top end face of the rubber column and the grounding column is fixedly connected with the bottom surface of the case bottom plate, and the bottom end face of the grounding column is in contact with the shelf of the case frame.

[0016] In the above technical scheme, the utility model provides technical effects and advantages:

[0017] 1. The utility model discloses a VPX case with electromagnetic shielding layer forms a continuous conductive path by spraying conductive paint coating containing copper particles on the outer side wall of each plate of the case and filling a conductive rubber strip in the joint, effectively prevents electromagnetic wave from leaking from the gap, and realizes preliminary electromagnetic shielding.

[0018] 2. The utility model discloses a VPX case with electromagnetic shielding layer adopts a power filter to filter input power signals, removes electromagnetic interference, ensures power quality stability, and reduces the influence on internal components. The waveguide net window of the air inlet and heat dissipation opening waveguide window mechanism allows air to pass through heat dissipation, simultaneously suppresses and reflects electromagnetic waves exceeding a specific frequency range, and plays an electromagnetic shielding role.

[0019] 3.The VPX case with an electromagnetic shielding layer, wherein a magnetic frame and a case plate piece are magnetically connected, convenient to install and disassemble, the conductive rubber frame and the conductive gasket enhance the electromagnetic shielding performance of the connection, the rubber column of the grounding foot is insulated and damped, the grounding column leads the case static electricity and electromagnetic interference into the ground, and the electromagnetic compatibility is improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 FIG. 1 is a front view of the VPX case with an electromagnetic shielding layer according to the present application;

[0021] Figure 2 FIG. 2 is a side view of the VPX case with an electromagnetic shielding layer according to the present application;

[0022] Figure 3 FIG. 3 is an internal exploded view of the VPX case with an electromagnetic shielding layer according to the present application;

[0023] Figure 4 FIG. 4 is a schematic view of a heat dissipation port waveguide window mechanism in the VPX case with an electromagnetic shielding layer according to the present application;

[0024] Figure 5 FIG. 5 is a schematic view of an air inlet waveguide window mechanism in the VPX case with an electromagnetic shielding layer according to the present application;

[0025] Figure 6 FIG. 6 is a schematic view of a grounding foot in the VPX case with an electromagnetic shielding layer according to the present application.

[0026] BRIEF DESCRIPTION OF DRAWINGS

[0027] 1, case side plate; 2, case front plate; 3, heat dissipation port waveguide window mechanism; 3-1, frame; 3-2, square magnetic ring; 3-3, conductive gasket; 3-4, honeycomb core waveguide net; 4, case rear plate; 5, grounding foot; 5-1, rubber column; 5-2, grounding column; 6, case bottom plate; 7, air inlet waveguide window mechanism; 7-1, conductive rubber frame; 7-2, rectangular magnetic frame; 7-3, waveguide net window; 8, case top plate. DETAILED DESCRIPTION

[0028] To provide a clearer explanation and illustration of the technical solution and implementation of this utility model, several preferred specific embodiments for implementing the technical solution of this utility model are described below. The following description is merely exemplary and not intended to limit the scope, application, or use of this disclosure. It should be understood that in all these drawings, the same or similar reference numerals indicate the same or similar parts and features. The various drawings only schematically illustrate the concept and principle of the embodiments of this disclosure and do not necessarily show the specific dimensions and proportions of the various embodiments of this disclosure. The technical solution of this utility model will be clearly and completely described below in conjunction with embodiments of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model.

[0029] Example 1, such as Figure 1 , Figure 2 and Figure 3 As shown, this embodiment is a newly developed VPX chassis with an electromagnetic shielding layer. The chassis structure includes a chassis base plate 6 at the bottom, chassis side plates 1 fixed on the left and right sides of the upper surface of the chassis base plate 6, and a chassis front plate 2 and a chassis rear plate 4 fixed on the front and rear sides respectively. A chassis top plate 8 is fixed to the top of the chassis front plate 2, chassis rear plate 4, and chassis side plates 1. Grounding feet 5 are installed at the four corners of the bottom surface of the chassis base plate 6. The top ends of the rubber posts 5-1 and grounding posts 5-2 of the grounding feet 5 are fixedly connected to the bottom surface of the chassis base plate 6, and the bottom end of the grounding post 5-2 contacts the shelf of the chassis frame.

[0030] like Figure 4 and Figure 5 As shown, a heat dissipation vent waveguide window mechanism 3 is installed on the outer sidewall of the rear panel 4 of the chassis. The frame 3-1 of the heat dissipation vent waveguide window mechanism 3 is fixed to the rear panel 4 of the chassis. A honeycomb core waveguide mesh 3-4 is fixed inside the frame 3-1. A square magnetic ring 3-2 is fixed to the front sidewall of the frame 3-1. A conductive pad 3-3 is fixed to the front end face of the square magnetic ring 3-2. The magnetism of the square magnetic ring 3-2 attracts the rear sidewall of the rear panel 4 of the chassis. The front end face of the conductive pad 3-3 contacts the rear sidewall of the rear panel 4 of the chassis.

[0031] Two air inlet waveguide window mechanisms 7 are installed on the inner side wall of the aforementioned front panel 2 of the chassis. The waveguide mesh window 7-3 of the air inlet waveguide window mechanism 7 is fixed to the front panel 2 of the chassis. A rectangular magnetic frame 7-2 is fixed to the front side of the waveguide mesh window 7-3. A conductive rubber frame 7-1 is fixed to the front end face of the rectangular magnetic frame 7-2. The magnetism of the rectangular magnetic frame 7-2 attracts the rear side wall of the front panel 2 of the chassis. The front end face of the conductive rubber frame 7-1 contacts the rear side wall of the front panel 2 of the chassis. Multiple interfaces are provided on the front end face of the front panel 2 of the chassis. A power filter compatible with the interfaces is installed on the rear side wall. An air intake grille is opened on the left and right sides of the front side wall. The air inlet waveguide window mechanism 7 is located behind the air intake grille. Multiple heat dissipation holes are provided on the rear side of the chassis rear panel 4. The heat dissipation vent waveguide window mechanism 3 is located behind the heat dissipation holes and covers the heat dissipation holes.

[0032] In order to achieve electromagnetic shielding, the outer wall surface of the chassis side plate 1, the chassis front plate 2, the chassis rear plate 4, the chassis bottom plate 6 and the chassis top plate 8 is sprayed with a conductive paint coating containing copper particles, and the joint positions between the plates are filled with conductive rubber strips. When the waveguide window needs to be cleaned, since the square magnetic ring 3-2 and the chassis rear plate 4, and the rectangular magnetic frame 7-2 and the chassis front plate 2 are connected by magnetic attraction, the heat dissipation port waveguide window mechanism 3 and the air inlet waveguide window mechanism 7 can be directly removed for cleaning. After cleaning, they are installed back in place using magnetic attraction.

[0033] Embodiment 2, as shown in Figure 3 and Figure 6 The embodiment provides a VPX chassis with an electromagnetic shielding layer, and the overall structure of the chassis is similar to that of embodiment 1. The chassis bottom plate 6, the chassis side plate 1, the chassis front plate 2, the chassis rear plate 4 and the chassis top plate 8 form the chassis main frame. The grounding feet 5 are installed at the four corners of the bottom of the chassis bottom plate 6, the top ends of the rubber columns 5-1 and the grounding columns 5-2 are connected with the chassis bottom plate 6, and the bottom end of the grounding column 5-2 is in contact with the chassis shelf plate. The heat dissipation port waveguide window mechanism 3 is installed on the outer side of the chassis rear plate 4, the frame 3-1 fixes the honeycomb core waveguide net 3-4, the square magnetic ring 3-2 is fixed on the front side of the frame 3-1, the conductive gasket 3-3 is fixed on the front side of the square magnetic ring 3-2, the square magnetic ring 3-2 is magnetically attracted to the chassis rear plate 4, and the conductive gasket 3-3 is in contact with the chassis rear plate 4. The air inlet waveguide window mechanism 7 is installed on the inner side of the chassis front plate 2, the waveguide net window 7-3 is fixed with the rectangular magnetic frame 7-2 on the front side, the rectangular magnetic frame 7-2 is fixed with the conductive rubber frame 7-1 on the front side, the rectangular magnetic frame 7-2 is magnetically attracted to the chassis front plate 2, and the conductive rubber frame 7-1 is in contact with the chassis front plate 2.

[0034] The front side of the chassis front plate 2 has multiple interfaces and adapted power filter, and each side of the front side wall has an air inlet grille, and the air inlet waveguide window mechanism 7 is behind the air inlet grille. The rear side of the chassis rear plate 4 has multiple heat dissipation holes, and the heat dissipation port waveguide window mechanism 3 covers the heat dissipation holes. The outer wall of each plate of the chassis is sprayed with a conductive paint coating containing copper particles, and the joint positions are filled with conductive rubber strips. After long-term use, if the waveguide window accumulates a lot of dust affecting the heat dissipation and electromagnetic shielding effect, the magnetic attraction force of the square magnetic ring 3-2 and the chassis rear plate 4, and the magnetic attraction force of the rectangular magnetic frame 7-2 and the chassis front plate 2 can be overcome, and the heat dissipation port waveguide window mechanism 3 and the air inlet waveguide window mechanism 7 can be removed for cleaning with appropriate cleaning tools and cleaning agents. After cleaning the components in the VPX chassis, the cleaning here is usually with special cleaning fluid, or with a hair dryer, or with a special cloth, etc., to avoid short circuit or damage caused by wiping. After cleaning, they are accurately installed back to the original position using magnetic attraction, and continue to play the role of heat dissipation and electromagnetic shielding.

[0035] The embodiment 3 provides the VPX case with the electromagnetic shielding layer, the case is composed of the case bottom plate 6, the case side plate 1, the case front plate 2, the case rear plate 4 and the case top plate 8 to form a basic frame structure. The grounding feet 5 are arranged at four corners of the bottom of the case bottom plate 6, the rubber columns 5-1 and the grounding columns 5-2 are fixed at the top ends of the case bottom plate 6, and the bottom ends of the grounding columns 5-2 are in contact with the case rack shelf plate. The heat dissipation opening waveguide window mechanism 3 is installed on the outer side of the case rear plate 4, the honeycomb core waveguide net 3-4 is fixed in the frame 3-1, the square magnetic ring 3-2 is arranged on the front side of the frame 3-1, the conductive gasket 3-3 is arranged on the front side of the square magnetic ring 3-2, the square magnetic ring 3-2 is connected with the case rear plate 4 through magnetic attraction, and the conductive gasket 3-3 is in contact with the case rear plate 4. Two air inlet waveguide window mechanisms 7 are installed on the inner side of the case front plate 2, the rectangular magnetic frame 7-2 is arranged on the front side of the waveguide net window 7-3, the conductive rubber frame 7-1 is arranged on the front side of the rectangular magnetic frame 7-2, the rectangular magnetic frame 7-2 is connected with the case front plate 2 through magnetic attraction, and the conductive rubber frame 7-1 is in contact with the case front plate 2.

[0036] The case front plate 2 is provided with a plurality of interfaces and power filter on the front side, the front side wall is provided with air inlet grilles on the left and right sides, and the air inlet waveguide window mechanism 7 is located on the rear side of the air inlet grilles; the case rear plate 4 is provided with a plurality of heat dissipation through holes on the rear side, and the heat dissipation opening waveguide window mechanism 3 covers the heat dissipation through holes. The outer side walls of the plates of the case are sprayed with a conductive paint coating containing copper particles, and the joints of the plates are filled with conductive rubber strips. After the VPX case is used in a harsh environment for a period of time, the heat dissipation opening waveguide window mechanism 3 and the air inlet waveguide window mechanism 7 may be blocked by dust, sundries and the like, affecting the heat dissipation and electromagnetic shielding performance of the case.

[0037] At this time, the operator can easily take the heat dissipation opening waveguide window mechanism 3 from the case rear plate 4 and take the air inlet waveguide window mechanism 7 from the case front plate 2, and comprehensively clean them to remove the dirt on the surface. After cleaning, the heat dissipation opening waveguide window mechanism 3 is close to the case rear plate 4, the square magnetic ring 3-2 is accurately reset by using the magnetic attraction force; the air inlet waveguide window mechanism 7 is close to the case front plate 2, the rectangular magnetic frame 7-2 is accurately installed by using the magnetic attraction force, and the normal heat dissipation and electromagnetic shielding function of the case is restored.

[0038] According to the above-mentioned preferred technical solutions, the working process of the technical solutions is described: the case side plate 1, the case front plate 2, the case rear plate 4, the case bottom plate 6 and the case top plate 8 jointly constitute a closed case space to provide physical support and protection for internal electronic components. At the same time, the outer wall surface of these plate members is sprayed with a conductive paint coating containing copper particles, and the joint position between the plates is filled with a conductive rubber strip, which can form a continuous conductive path, effectively preventing electromagnetic waves from leaking from the case gap, and achieving preliminary electromagnetic shielding of the entire case. The multiple interfaces provided on the front side end face of the case front plate 2 are used to connect external devices to realize data transmission and power input functions, and the power filter installed on the rear side wall of the case front plate 2 and matched with the interface can filter the input power signal to remove electromagnetic interference in the power supply, ensure the stability of the power quality entering the case, and reduce the influence of electromagnetic interference caused by power problems on the electronic components in the case. The air inlet grilles opened on the left and right sides of the front side wall of the case front plate 2 are air passages into the case, and the air inlet waveguide window mechanism 7 is located behind the air inlet grilles. The waveguide net window 7-3 has a specific waveguide structure that allows air within a specific frequency range to pass through to achieve heat dissipation, while suppressing and reflecting electromagnetic waves outside the frequency range, thereby playing an electromagnetic shielding role; the magnetic property of the rectangular magnetic frame 7-2 is attracted to the rear side wall of the case front plate 2, so that the air inlet waveguide window mechanism 7 can be easily fixed on the case front plate 2, and the front side end face of the conductive rubber frame 7-1 is in contact with the rear side wall of the case front plate 2, further enhancing the electromagnetic shielding effect and preventing electromagnetic waves from leaking from the connection between the air inlet waveguide window mechanism 7 and the case front plate 2.

[0039] Air enters from the air inlet grille, and after filtering and electromagnetic shielding treatment of the air inlet waveguide window mechanism 7, enters the cabinet interior to dissipate heat for the electronic components in the cabinet. The plurality of heat dissipation through-holes provided on the rear side of the cabinet rear plate 4 are channels for the hot air in the cabinet to be discharged, and the heat dissipation opening waveguide window mechanism 3 is located at the rear side of the heat dissipation through-holes and covers the heat dissipation through-holes, and the honeycomb core waveguide net 3-4 thereof also has a waveguide structure to allow the hot air to pass through while shielding electromagnetic waves. The magnetic property of the square magnetic ring 3-2 attracts the rear side sidewall of the cabinet rear plate 4, so that the heat dissipation opening waveguide window mechanism 3 is fixed on the cabinet rear plate 4, and the front side end surface of the conductive gasket 3-3 contacts the rear side sidewall of the cabinet rear plate 4, thereby enhancing the electromagnetic shielding performance of the connection and preventing electromagnetic waves from leaking from the connection between the heat dissipation opening waveguide window mechanism 3 and the cabinet rear plate 4. The hot air in the cabinet passes through the heat dissipation through-holes and is discharged from the cabinet after electromagnetic shielding treatment of the heat dissipation opening waveguide window mechanism 3, thereby achieving the heat dissipation function of the cabinet. The rubber column 5-1 of the grounding leg 5 plays a role of insulation and shock absorption, the top end surface of the grounding column 5-2 penetratingly fixed in the inner cavity of the rubber column 5-1 is fixedly connected with the bottom surface of the cabinet bottom plate 6, and the bottom end surface contacts the shelf of the cabinet frame, so that the static electricity and electromagnetic interference accumulated on the cabinet can be conducted to the ground through the grounding column 5-2, further reducing the influence of electromagnetic interference on the electronic components in the cabinet and improving the electromagnetic compatibility of the cabinet. When it is necessary to clean the heat dissipation opening waveguide window mechanism 3 and the air inlet waveguide window mechanism 7, since the square magnetic ring 3-2 and the cabinet rear plate 4 and the rectangular magnetic frame 7-2 and the cabinet front plate 2 are connected by magnetic attraction, the heat dissipation opening waveguide window mechanism 3 can be easily taken off from the cabinet rear plate 4, and the air inlet waveguide window mechanism 7 can be easily taken off from the cabinet front plate 2 for cleaning, and after cleaning, they can be installed back to the original positions by using the magnetic attraction, which is convenient and fast and does not affect the electromagnetic shielding and heat dissipation performance of the cabinet.

[0040] The above only describes certain exemplary embodiments of the present application by way of illustration, and it is needless to say that those skilled in the art can modify the described embodiments in various manners without departing from the spirit and scope of the present application. Therefore, the above drawings and description are illustrative in nature and should not be understood as limiting the scope of protection of the claims of the present application.

Claims

1. A VPX chassis with an electromagnetic shielding layer, comprising a chassis structure, characterized in that: The cabinet structure comprises a cabinet bottom plate (6) at the bottom, cabinet side plates (1) fixed on the upper surface of the cabinet bottom plate (6) on the left and right sides, a cabinet front plate (2) and a cabinet rear plate (4) fixed on the upper surface of the cabinet bottom plate (6) on the front and rear sides, a cabinet top plate (8) fixed on the top of the cabinet front plate (2), the cabinet rear plate (4) and the cabinet side plates (1), and grounding feet (5) installed on the bottom surface of the cabinet bottom plate (6) at the four corners; and a heat dissipation port waveguide window mechanism (3) is installed on the outer side wall of the cabinet rear plate (4), and two air inlet waveguide window mechanisms (7) are installed on the inner side wall of the cabinet front plate (2). The heat dissipation port waveguide window mechanism (3) comprises a frame (3-1), a honeycomb core waveguide net (3-4) fixed in the frame (3-1), and a square magnetic ring (3-2) fixed on the front side wall of the frame (3-1), and a conductive gasket (3-3) is fixed on the front side surface of the square magnetic ring (3-2). The grounding feet (5) comprise a rubber column (5-1) and a grounding column (5-2) penetratingly fixed in the inner cavity of the rubber column (5-1). The air inlet waveguide window mechanism (7) comprises a waveguide net window (7-3), a rectangular magnetic frame (7-2) fixed on the front side of the waveguide net window (7-3), and a conductive rubber frame (7-1) fixed on the front side surface of the rectangular magnetic frame (7-2).

2. The VPX chassis with electromagnetic shielding layer of claim 1, wherein: A plurality of interfaces are arranged on the front side surface of the cabinet front plate (2), and a power filter matched with the interfaces is installed on the rear side wall of the cabinet front plate (2).

3. The VPX chassis with electromagnetic shielding layer of claim 1, wherein: An air inlet grille is arranged on the left and right sides of the front side wall of the cabinet front plate (2), and the air inlet waveguide window mechanism (7) is located at the rear side of the air inlet grille.

4. The VPX chassis with electromagnetic shielding layer of claim 1, wherein: A plurality of heat dissipation through holes are arranged on the rear side of the cabinet rear plate (4), and the heat dissipation port waveguide window mechanism (3) is located at the rear side of the heat dissipation through holes and covers the heat dissipation through holes.

5. The VPX chassis with electromagnetic shielding layer of claim 1, wherein: The magnetism of the square magnetic ring (3-2) is attracted to the rear side wall of the cabinet rear plate (4), and the front side surface of the conductive gasket (3-3) is in contact with the rear side wall of the cabinet rear plate (4).

6. The VPX chassis with electromagnetic shielding layer of claim 1, wherein: The magnetism of the rectangular magnetic frame (7-2) is attracted to the rear side wall of the cabinet front plate (2), and the front side surface of the conductive rubber frame (7-1) is in contact with the rear side wall of the cabinet front plate (2).

7. The VPX chassis with electromagnetic shielding layer of claim 1, wherein: Conductive paint coatings containing copper particles are sprayed on the outer side wall surfaces of the cabinet side plates (1), the cabinet front plate (2), the cabinet rear plate (4), the cabinet bottom plate (6) and the cabinet top plate (8), and conductive rubber strips are filled in the joint positions between the cabinet side plates (1), the cabinet front plate (2), the cabinet rear plate (4), the cabinet bottom plate (6) and the cabinet top plate (8).

8. The VPX chassis with electromagnetic shielding layer of claim 1, wherein: The top end surfaces of the rubber column (5-1) and the grounding column (5-2) are fixedly connected with the bottom surface of the cabinet bottom plate (6), and the bottom end surface of the grounding column (5-2) is in contact with the shelf of the cabinet frame.

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