Electromagnetic shielding plug-in card case

Abstract

The utility model discloses an electromagnetic shielding plug-in card case, and relates to the technical field of electronic equipment cases, the electromagnetic shielding plug-in card case comprises a case body and a shielding panel used for sealing, the front part of the case body is oppositely provided with two flange modules, and the flange modules adopt a structure integrated with a handle. The shielding panel is fixedly installed on the rear portion of the case body, a PCB back plate and a plurality of DIN sockets are arranged in the case body, the DIN sockets are welded on the PCB back plate in an equidistant array mode, and the PCB back plate is fixedly connected with the upper cross beam and the lower cross beam. According to the utility model, the structure is simple, the shielding panel and the PCB back plate in the case are convenient to disassemble and assemble, the two shielding reeds are clamped at the two ports of the shielding panel, and the two shielding cloths are oppositely arranged on the inner side of the shielding panel, so that electromagnetic signals outside the case are effectively shielded at the seam of the shielding panel and the case body, and radiation to an internal circuit is avoided; signal transmission between electrical parts in the case is facilitated, and the anti-interference capability is high.

Description

Technical Field

[0001] This utility model relates to the field of electronic device chassis technology, and in particular to an electromagnetic shielded card-insertion chassis. Background Technology

[0002] With the rapid development of modern communication technology, the functions of optical wireless switch chassis are constantly expanding, and the integration of chassis is continuously improving. Electronic devices within these chassis generate electromagnetic waves during operation, which can cause electromagnetic interference to other electrical and electronic equipment, thus affecting the transmission of electronic signals and even causing equipment malfunctions. Therefore, it is necessary to install electronic equipment in chassis with electromagnetic wave shielding capabilities to ensure the normal operation of the electronic equipment.

[0003] However, existing ordinary shielded enclosures, in order to meet electromagnetic compatibility requirements and ensure shielding effectiveness, mostly adopt a fully enclosed structure, which has poor heat dissipation and will affect the normal operation of electronic equipment. At the same time, the electromagnetic shielding structure design inside the enclosure in the existing technology is complex and costly, and the electromagnetic shielding effect inside the enclosure is poor, especially at the joints between the panels around the enclosure. The gaps at the joints can cause electromagnetic interference and radiation that will interfere with the equipment, making it unsuitable for large-scale promotion and use.

[0004] For the reasons mentioned above, the design of the chassis must fully consider and address the issues of electromagnetic interference and radiation. Therefore, the design of a reasonable electromagnetic shielding structure between the shielding panel and the chassis body to prevent external electromagnetic interference and radiation has become an urgent problem to be solved. Utility Model Content

[0005] The purpose of this utility model is to provide an electromagnetic shielded card insertion box. The electromagnetic shielded card insertion box has shielding springs set in the shielding panel and two shielding cloths set opposite to each other on the inner side, so that the electromagnetic signals generated in the box are effectively shielded at the joint between the shielding panel and the box body, preventing external electromagnetic interference and radiation, facilitating signal transmission between electrical components in the box, and having strong anti-interference ability.

[0006] To achieve the above objectives, this utility model provides an electromagnetic shielded card-insertion chassis, including a chassis body and a shielding panel for enclosure. The front of the chassis body has two flange modules and a handle arranged opposite to each other. The flange modules and the handle adopt an integrated structure. The shielding panel is fixedly installed at the rear of the chassis body. The chassis body has a PCB backplate and several DIN sockets. The DIN sockets are equidistantly arrayed and soldered to the PCB backplate. The PCB backplate is fixedly connected to the chassis body.

[0007] Preferably, the shielding panel is configured as a U-shaped structure, with two shielding springs respectively installed at both ends of the shielding panel, and two shielding cloths arranged opposite each other on the inner side of the shielding panel.

[0008] Preferably, the chassis body includes a first side plate, a second side plate, and a crossbeam module. The first side plate and the second side plate are provided with through holes for fixed connection at corresponding positions. The first side plate and the second side plate are assembled and connected to form a frame structure through the crossbeam module.

[0009] Preferably, a first groove is provided at the bottom port of the shielding panel, one side of the shielding spring is fixedly connected to the first groove, and the other side abuts against the inner side of the crossbeam module.

[0010] Preferably, a second groove is provided at the junction of the inner wall of the shielding panel and the second side plate, and the shielding cloth is bonded to the bottom surface of the second groove.

[0011] Preferably, the height dimension of the top plane of the shielding cloth is greater than the depth dimension of the second groove.

[0012] Preferably, the first side plate has a plurality of ventilation holes arranged in an array, and the diameter of the ventilation holes is 4mm.

[0013] Therefore, the electromagnetic shielded card-insertion chassis of this utility model with the above-described structure has the following advantages compared with the prior art:

[0014] This invention features shielding springs on the top and bottom of a shielding panel, with shielding cloth adhered to both sides. The shielding springs are made of conductive metallic materials. By fixing these two different shielding materials to the shielding panel, electromagnetic signals from outside the chassis are effectively shielded at the joint between the shielding panel and the chassis body, preventing radiation to the internal circuitry. This facilitates signal transmission between electrical components within the chassis and provides strong anti-interference capabilities. Since the shielding panel and shielding springs are integrally fixed to the chassis body, the PCB backplate can be removed simply by disassembling the shielding panel. Compared to the traditional method of removing the rear cover and support beams before removing the PCB backplate, this invention offers convenient and quick PCB backplate removal and assembly. Attached Figure Description

[0015] Figure 1 This is an exploded view of an embodiment of an electromagnetic shielded card-insertion chassis according to this utility model;

[0016] Figure 2 This is a three-dimensional model of the overall structure of an embodiment of an electromagnetic shielded plug-in card chassis according to this utility model;

[0017] Figure 3This is a schematic diagram of the shielding panel structure of an embodiment of an electromagnetic shielding card-insertion chassis according to this utility model;

[0018] Figure 4 This is a cross-sectional view of the shielding spring fixing in an embodiment of an electromagnetic shielding card-insertion chassis according to this utility model;

[0019] Figure 5 This is a cross-sectional view of the shielding cloth fixing in an embodiment of an electromagnetic shielding card insertion box of this utility model.

[0020] Figure label:

[0021] 1. Chassis body; 11. First side panel; 1101. Ventilation hole; 12. Second side panel; 13. Crossbeam module; 2. Flange module; 3. Shielding panel; 31. First groove; 32. Second groove; 4. PCB backplate; 5. DIN socket; 6. Shielding spring; 7. Shielding cloth; 8. Through hole; 9. Handle. Detailed Implementation

[0022] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0023] Unless otherwise defined, the technical or scientific terms used in this utility model shall have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0024] Example

[0025] Please see Figures 1-3This utility model provides an electromagnetic shielded card-insertion chassis, including a chassis body 1 and a shielding panel 3 for enclosure. The front of the chassis body 1 is provided with two flange modules 2 and a handle 9. The flange modules 2 and the handle 9 adopt an integrated structure. The handle of the flange module 2 is integrated with the flange. The integrated flange module is stronger and more aesthetically pleasing than the traditional handle which is fixed with screws. The shielding panel 3 is fixedly installed at the rear of the chassis body. The chassis body 1 includes a first side plate 11, a second side plate 12 and a crossbeam module 13. The first side plate 11 and the second side plate 12 are provided with through holes 8 for fixed connection at corresponding positions. The first side plate 11 and the second side plate 12 are fixedly connected by screws passing through the through holes 8. The crossbeam module 13 is fixedly installed at the four corners of the chassis body 1. At the same time, the first side plate 11 and the second side plate 12 are assembled and connected to form a frame structure through the crossbeam module 13. The shielding panel 3 is designed with a U-shaped structure. Two shielding springs 6 are respectively installed at both ends of the shielding panel 3. Two shielding cloths 7 are arranged opposite each other on the inner side of the shielding panel 3. A first groove 31 is provided at the bottom end of the shielding panel 3. One side of the shielding spring 6 is fixedly connected to the first groove 31, and the other side abuts against the inner side of the crossbeam module 13. A second groove 32 is provided at the junction of the inner wall of the shielding panel 3 and the second side plate 12. The shielding cloth 7 is bonded to the bottom surface of the second groove 32. During installation, the top plane height of the shielding cloth 7 is greater than the depth of the second groove 32 to ensure a connection at the joint between the shielding panel 3 and the chassis body 1. In use, the shielding springs 6 installed at the top and bottom of the shielding panel 3 and the shielding cloths 7 bonded to both sides effectively shield the joint between the shielding panel 3 and the chassis body 1. (See details...) Figures 4-5 As shown, the shielding spring 6 is made of conductive metallic material. By fixing two different shielding materials to the shielding panel 3, the electromagnetic signals generated inside the computer chassis during operation are effectively shielded at the seams between the shielding panel 3 and the chassis body 1, preventing radiation and protecting information. Operators are also protected from radiation. The chassis body contains a PCB backplate 4 and several DIN sockets 5. The DIN sockets 5 are equidistantly arrayed and fixedly installed on the top of the PCB backplate 4. The PCB backplate 4 is then fixedly connected to the crossbeam module 13 in the chassis body 1 with screws. When the PCB backplate is disassembled, it can be removed simply by removing the shielding panel. Compared to traditional shielded chassis, the PCB backplate 4 is easier and faster to install and remove.

[0026] In this embodiment, a plurality of arrayed ventilation holes 1101 are provided on the first side plate 11. The ventilation holes 1101 can improve the heat dissipation effect of the chassis body 1, wherein the diameter of the ventilation holes 1101 is 4mm.

[0027] Therefore, the card-insertion chassis of this utility model has a simple structure, and its shielding panel and the PCB backplate inside the chassis are easy to disassemble and assemble. The integrated flange module is easy to carry. At the same time, this utility model uses two different shielding materials to fix on the shielding panel, so that the electromagnetic signals outside the chassis are effectively shielded at the joint between the shielding panel and the chassis body, and will not generate radiation to the internal circuit. This is conducive to the signal transmission between electrical components inside the chassis and has strong anti-interference ability.

Claims

1. An electromagnetically shielded card-insertion chassis, characterized in that: The device includes a chassis body and a shielding panel for enclosure. The front of the chassis body has two flange modules and a handle, which are arranged opposite each other. The flange modules and the handle are integrated. The shielding panel is fixedly installed at the rear of the chassis body. The chassis body has a PCB backplate and several DIN sockets. The DIN sockets are equidistantly arrayed and soldered to the PCB backplate. The PCB backplate is fixedly connected to the chassis body.

2. The electromagnetic shielding card-insertion chassis according to claim 1, characterized in that: The shielding panel is configured with a U-shaped structure, and two shielding springs are snapped onto the two ends of the shielding panel. Two shielding cloths are arranged opposite each other on the inner side of the shielding panel.

3. The electromagnetic shielding card-insertion chassis according to claim 2, characterized in that: The chassis body includes a first side plate, a second side plate, and a crossbeam module. The first side plate and the second side plate are provided with through holes for fixed connection at corresponding positions. The first side plate and the second side plate are assembled and connected to form a frame structure through the crossbeam module.

4. The electromagnetic shielding card-insertion chassis according to claim 3, characterized in that: A first groove is provided at the bottom port of the shielding panel. One side of the shielding spring is fixedly connected to the first groove, and the other side abuts against the inner side of the crossbeam module.

5. The electromagnetic shielding card-insertion chassis according to claim 4, characterized in that: A second groove is provided at the junction of the inner wall of the shielding panel and the second side plate, and the shielding cloth is bonded to the bottom surface of the second groove.

6. The electromagnetic shielding card-insertion chassis according to claim 5, characterized in that: The height dimension of the top plane of the shielding cloth is greater than the depth dimension of the second groove.

7. The electromagnetic shielding card-insertion chassis according to claim 6, characterized in that: The first side plate has a plurality of ventilation holes arranged in an array, and the diameter of the ventilation holes is 4mm.

Images