Electromagnetic shielding box body capable of being quickly assembled

Abstract

The utility model relates to the technical field of shielding boxes, and discloses an electromagnetic shielding box body capable of being quickly assembled, which comprises a front plate, a handle is fixedly connected to the front side surface of the front plate, an assembled side shell is detachably connected to the back surface of the front plate, a bottom plate is arranged below the front plate, a top plate is arranged above the front plate, and the top plate is detachably connected with the assembled side shell. An upper fixing frame is fixedly connected to the upper surface of the bottom plate, an upper conductive rubber frame is fixedly connected to the outer wall of the upper fixing frame, a lower fixing frame is fixedly connected to the bottom surface of the top plate, and a lower conductive rubber frame is fixedly connected to the surface of the inner wall of the lower fixing frame. According to the utility model, through cooperation of the upper fixing frame, the lower fixing frame, the triangular frame and the fixing unit, mutual extrusion filling between the upper conductive rubber frame and the lower conductive rubber frame is utilized, the shielding efficiency of the box body is improved, and the assembled side shell can be attached to the outer side of the lower fixing frame for preliminary limiting and then is fixed through bolts. And the splicing efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of shielding box technology, and in particular to an electromagnetic shielding box that can be quickly assembled. Background Technology

[0002] An electromagnetic shielding box is a shielding body made of conductive or magnetic materials. It is used to suppress electromagnetic interference, provide an interference-free testing environment for the device under test, limit the radiated electromagnetic energy inside the device from exceeding a certain area, prevent external radiated electromagnetic energy from entering a certain area, and effectively isolate electromagnetic interference from the external environment. It provides a pure electromagnetic environment, prevents the device from being damaged by external electromagnetic interference, and thus provides a stable testing environment and reduces testing errors.

[0003] A search revealed Chinese Patent Publication No. CN217135961U, which discloses an easy-to-install electromagnetic compatibility shielding box. The box is installed on top of a mounting base plate. When installing the outer box, a connector B is inserted into the inner side of a connector slot B, and a connector A is inserted into the inner side of a connector slot A, thus securely installing the outer box on top of the mounting base plate and preventing it from detaching. Installation is convenient, as it uses a snap-fit ​​method for assembly, resulting in easy assembly and good fixation.

[0004] In practical applications, existing electromagnetic shielding boxes are mostly assembled from steel plates and installed by fastening the assembled units with bolts. However, due to limitations in manufacturing precision, gaps are prone to exist at the joints between the steel plates. When the plates are fixed and pressed together with bolts alone, the gaps are difficult to completely squeeze and seal, which affects the shielding effect of the electromagnetic shielding box. Therefore, a rapidly assembled electromagnetic shielding box is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides an electromagnetic shielding box that can be quickly assembled, aiming to improve the problem that gaps at the connection points between the plates used in the assembly process of the prior art will affect the shielding effect of the shielding box.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a rapidly assembleable electromagnetic shielding enclosure, comprising a front panel, a handle fixedly connected to the front surface of the front panel, a detachably connected modular side shell to the back of the front panel, a bottom plate below the front panel, a top plate above the front panel, an upper fixing frame fixedly connected to the upper surface of the bottom plate, an upper conductive rubber frame fixedly connected to the outer wall of the upper fixing frame, a lower fixing frame fixedly connected to the bottom surface of the top plate, a lower conductive rubber frame fixedly connected to the inner wall surface of the lower fixing frame, triangular frames fixedly connected to the upper surface of the upper conductive rubber frame and the bottom surface of the lower conductive rubber frame, a fixing unit provided on the outer side of the modular side shell for detachable connection between the modular side shell, the top plate and the bottom plate, and a guide unit provided above the bottom plate for guiding and limiting the bottom plate and the top plate during assembly.

[0007] As a further description of the above technical solution:

[0008] The lower fixing frame is fitted onto the outside of the upper fixing frame, and the cross-section of the triangular frame is a right-angled triangle structure.

[0009] As a further description of the above technical solution:

[0010] The upper and lower conductive rubber frames are both arranged in right-angled trapezoidal cross-sections, and are connected by a snap-fit ​​structure.

[0011] As a further description of the above technical solution:

[0012] The fixing unit includes screw holes, which are opened on the outer surface of the assembled side shell. Bolts are provided on the bottom of the bottom plate and the top of the top plate. Storage grooves are provided on the bottom surface of the bottom plate and the top surface of the top plate.

[0013] As a further description of the above technical solution:

[0014] The size of the bolt is adapted to the size of the bolt hole, and the size of the bolt end is adapted to the size of the receiving groove.

[0015] As a further description of the above technical solution:

[0016] The guiding unit includes a guide cylinder, which is fixedly connected to the upper surface of the base plate, and a guide rod is fixedly connected to the bottom surface of the top plate.

[0017] As a further description of the above technical solution:

[0018] The guide rod is inserted into the inside of the guide cylinder.

[0019] As a further description of the above technical solution:

[0020] The top of the inner wall of the guide cylinder is chamfered.

[0021] This utility model has the following beneficial effects:

[0022] 1. In this utility model, the upper fixed frame, lower fixed frame, triangular frame, and fixing unit work together to tightly seal the gap between the bottom plate and the top plate by utilizing the mutual compression and filling between the upper and lower conductive rubber frames, thereby improving the shielding efficiency of the enclosure. After assembling the bottom plate and the top plate, the modular side shell can be initially positioned by attaching it to the outside of the lower fixed frame before being fixed with bolts, reducing assembly difficulty and improving splicing efficiency.

[0023] 2. In this utility model, the combination of the guide cylinder and the guide rod can guide and limit the assembly between the bottom plate and the top plate, so that the lower fixed frame can be accurately fitted onto the outside of the upper fixed frame, reducing the vertical collision and squeezing between the upper and lower conductive rubber frames, thereby reducing the risk of edge curling damage to the upper and lower conductive rubber frames and improving the service life of the box. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of an electromagnetic shielding box that can be quickly assembled according to this utility model.

[0025] Figure 2 This is a schematic diagram of the disassembled electromagnetic shielding box that can be quickly assembled according to this utility model;

[0026] Figure 3 This utility model proposes a rapidly assembleable electromagnetic shielding box. Figure 2 A partial schematic diagram of point A;

[0027] Figure 4 This is a schematic diagram of the top and bottom plates of an electromagnetic shielding box that can be quickly assembled according to this utility model after disassembly.

[0028] Figure 5 This utility model proposes a rapidly assembleable electromagnetic shielding box. Figure 4 A schematic diagram of part B.

[0029] Legend:

[0030] 1. Front panel; 2. Handle; 3. Assembled side shell; 4. Base plate; 5. Top plate; 6. Upper fixing frame; 7. Upper conductive rubber frame; 8. Lower fixing frame; 9. Lower conductive rubber frame; 10. Triangular frame; 111. Screw hole; 112. Bolt; 113. Storage slot; 121. Guide cylinder; 122. Guide rod. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Reference Figures 1-2 This utility model provides an embodiment of an electromagnetic shielding enclosure that can be quickly assembled, including a front panel 1. A handle 2 is fixedly connected to the front surface of the front panel 1, allowing the entire assembled enclosure to be picked up and moved via the handle 2. A modular side shell 3 is detachably connected to the back of the front panel 1. The modular side shell 3 is assembled from four side panels. A 90-degree serrated shielding material is installed between adjacent side panels, and the joints are precision-machined. The front side panels are fixedly connected to the front panel 1 by fasteners. A bottom plate 4 is provided below the front panel 1, and a top plate 5 is provided above the front panel 1. The bottom plate 4 and the top plate 5 are the same size.

[0033] Reference Figures 4-5 An upper fixed frame 6 is fixedly connected to the upper surface of the base plate 4. When the base plate 4 moves, it can drive the upper fixed frame 6 to move synchronously. An upper conductive rubber frame 7 is fixedly connected to the outer wall of the upper fixed frame 6. A lower fixed frame 8 is fixedly connected to the bottom surface of the top plate 5. The inner wall of the assembled side shell 3 is in contact with the outer wall of the lower fixed frame 8. When the top plate 5 moves, it can drive the lower fixed frame 8 to move synchronously. The lower fixed frame 8 is sleeved on the outside of the upper fixed frame 6. A lower conductive rubber frame 9 is fixedly connected to the inner wall surface of the lower fixed frame 8. The cross-sections of the upper conductive rubber frame 7 and the lower conductive rubber frame 9 are both set in a right-angled trapezoidal structure. The conductive rubber frames 9 are interlocked. When assembly is required, the lower fixed frame 8 can be fitted onto the outside of the upper fixed frame 6. At this time, the inclined surfaces of the upper conductive rubber frame 7 and the lower conductive rubber frame 9 will fit together. Meanwhile, the combined thickness of the upper conductive rubber frame 7 and the lower conductive rubber frame 9 is greater than the gap thickness between the upper fixed frame 6 and the lower fixed frame 8. When the upper fixed frame 6 is fitted onto the outside of the lower fixed frame 8, the upper conductive rubber frame 7 and the lower conductive rubber frame 9 will be squeezed and deformed against each other, which can better fill the gap and provide better electromagnetic shielding for the structure installed at the center above the base plate 4.

[0034] Triangular frames 10 are fixedly connected to the upper surface of the upper conductive rubber frame 7 and the bottom surface of the lower conductive rubber frame 9. The cross-section of the triangular frame 10 is set in a right-angled triangle structure. The triangular frame 10 can increase the strength of the ends of the upper conductive rubber frame 7 and the lower conductive rubber frame 9, and can prevent the ends of the upper conductive rubber frame 7 and the lower conductive rubber frame 9 from vertically colliding and squeezing each other, which would cause the ends of the upper conductive rubber frame 7 and the lower conductive rubber frame 9 to warp and be damaged, thus affecting the service life of the box.

[0035] A guide unit is provided above the base plate 4. The guide unit includes a guide cylinder 121, which is fixedly connected to the upper surface of the base plate 4. A guide rod 122 is fixedly connected to the bottom surface of the top plate 5. When the top plate 5 moves, it can drive the guide rod 122 to move synchronously. The guide rod 122 is inserted into the inside of the guide cylinder 121. The top of the inner wall of the guide cylinder 121 is chamfered. The chamfered structure can increase the size of the inlet of the guide cylinder 121, so that the guide rod 122 can be better inserted and installed with the guide cylinder 121. Through the cooperation of the guide cylinder 121 and the guide rod 122, the installation between the top plate 5 and the base plate 4 can be guided and limited, so that the upper fixed frame 6 can be accurately fitted onto the outside of the lower fixed frame 8, reducing the vertical compression between the upper conductive rubber frame 7 and the lower conductive rubber frame 9.

[0036] Reference Figures 2-3 A fixing unit is provided on the outer side of the assembled side shell 3. The fixing unit includes a screw hole 111, which is opened on the outer surface of the assembled side shell 3. Bolts 112 are provided on the bottom plate 4 and the top plate 5. The bolts 112 pass through the bottom plate 4 and the top plate 5. The size of the bolts 112 is adapted to the size of the screw hole 111. The bottom plate 4 and the top plate 5 can be detachably installed on the outside of the assembled side shell 3 through the cooperation of the bolts 112 and the screw hole 111. The bottom surface of the bottom plate 4 and the upper surface of the top plate 5 are provided with a storage groove 113. The size of the end of the bolt 112 is adapted to the size of the storage groove 113. The storage groove 113 can hide and store the end of the bolt 112, improving the aesthetics of the box and reducing the impact of the protruding end of the bolt 112 on the use of the box.

[0037] Working principle: When assembling the enclosure, the bottom plate 4 and top plate 5 can be installed. The guide rod 122 is inserted into the guide cylinder 121, so that the upper fixed frame 6 can be accurately fitted onto the outside of the lower fixed frame 8. At this time, the upper conductive rubber frame 7 and the lower conductive rubber frame 9 are squeezed and limited, thus achieving a tight fit. The gap between the upper fixed frame 6 and the lower fixed frame 8 is sealed and filled, improving the overall electromagnetic shielding effect of the enclosure. At the same time, the bottom plate 4 and top plate 5 can be quickly installed. At this time, the gap between the bottom plate 4 and the top plate 5 is fixed. The modular side shell 3 can be quickly inserted into the gap between the bottom plate 4 and the top plate 5 for initial limiting. There is no need to assemble them piece by piece. After initial limiting to the outside of the lower fixed frame 8, it can be quickly fixed by bolts 112, which can improve the assembly efficiency.

[0038] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A rapidly assemblable electromagnetic shielding box comprising a front panel (1), characterized in that: The front side surface of the front plate (1) is fixedly connected with a handle (2), the back surface of the front plate (1) is detachably connected with a spliced side shell (3), the lower portion of the front plate (1) is provided with a bottom plate (4), the upper portion of the front plate (1) is provided with a top plate (5), the upper surface of the bottom plate (4) is fixedly connected with an upper fixed frame (6), the outer wall of the upper fixed frame (6) is fixedly connected with an upper conductive rubber frame (7), the bottom surface of the top plate (5) is fixedly connected with a lower fixed frame (8), the inner wall surface of the lower fixed frame (8) is fixedly connected with a lower conductive rubber frame (9), the upper surface of the upper conductive rubber frame (7) and the bottom surface of the lower conductive rubber frame (9) are both fixedly connected with a triangular frame (10), the outer side of the spliced side shell (3) is provided with a fixing unit, the fixing unit is used for detachable connection between the spliced side shell (3), the top plate (5) and the bottom plate (4), the upper portion of the bottom plate (4) is provided with a guide unit, the guide unit is used for guiding and limiting when the bottom plate (4) and the top plate (5) are spliced.

2. The rapidly assemblable electromagnetic shielding enclosure of claim 1, wherein: The lower fixed frame (8) is sleeved outside the upper fixed frame (6), and the cross section of the triangular frame (10) is provided in a right triangle structure.

3. The rapidly assemblable electromagnetic shielded enclosure of claim 1, wherein: The cross sections of the upper conductive rubber frame (7) and the lower conductive rubber frame (9) are both provided in a right trapezoidal structure, and the upper conductive rubber frame (7) and the lower conductive rubber frame (9) are provided in a snap-fit structure.

4. The rapidly assemblable electromagnetic shielded enclosure of claim 1, wherein: The fixing unit comprises a screw hole (111), the screw hole (111) is formed in the outer surface of the spliced side shell (3), the lower portion of the bottom plate (4) and the upper portion of the top plate (5) are both provided with a bolt (112), and the bottom surface of the bottom plate (4) and the upper surface of the top plate (5) are both provided with a receiving groove (113).

5. The rapidly assemblable electromagnetic shielded enclosure of claim 4, wherein: The size of the bolt (112) and the size of the screw hole (111) are matched with each other, and the size of the end portion of the bolt (112) and the size of the receiving groove (113) are matched with each other.

6. The rapidly assemblable electromagnetic shielded enclosure of claim 1, wherein: The guide unit comprises a guide cylinder (121), the guide cylinder (121) is fixedly connected to the upper surface of the bottom plate (4), and the bottom surface of the top plate (5) is fixedly connected with a guide rod (122).

7. The rapidly assemblable electromagnetic shielded enclosure of claim 6, wherein: The guide rod (122) is inserted into the guide cylinder (121).

8. The rapidly assemblable electromagnetic shielded enclosure of claim 6, wherein: The inner wall top end of the guide cylinder (121) is provided in a chamfered structure.

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