A novel shielded chamber for electromagnetic compatibility testing of travelling waves

Abstract

This invention provides a novel traveling-wave electromagnetic compatibility testing device for a shielded indoor environment, comprising side walls, a top surface, end faces, a rotatable plug-in replacement seat structure, and a structure for supporting and fixing the shielding seat. The upper ends of the side walls are respectively cast with the left and right sides of the bottom of the top surface; the front and rear ends of the side walls are respectively cast with end faces. The cooperative arrangement of the side walls, fixing seat, fixing cavity, connecting seat, and connecting block facilitates easy replacement and installation during use through threaded connections between the connecting seat and connecting block. The cooperative arrangement of the side walls, top surface, end faces, bottom surface, fixing frame, and shielding door facilitates bottom shielding during experiments.

Description

Technical Field

[0001] This utility model belongs to the technical field of electromagnetic compatibility testing equipment, and in particular relates to a novel shielded indoor traveling wave electromagnetic compatibility testing device. Background Technology

[0002] The purpose of electromagnetic compatibility (EMC) testing is to examine the sensitivity of electrical and electronic products or systems under test (referred to as test devices) to external electromagnetic fields. During testing, the test device needs to be placed in a uniform electromagnetic field, and the test equipment must be shielded to prevent interference with the external environment. Existing shielded indoor traveling wave type EMC test equipment suffers from the inconvenience of replacement during use and the difficulty of bottom shielding during operation. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides a novel shielded indoor traveling wave electromagnetic compatibility test device. By setting a replaceable mechanism during use, it is easy to replace the device during the experiment. Furthermore, by setting a bottom shielding mechanism during use, it is easy to achieve the purpose of bottom shielding during use.

[0004] A novel shielded indoor traveling wave electromagnetic compatibility test device includes side walls, the upper end of which is cast with a top surface on the left and right sides of the bottom; the front and rear ends of the side walls are cast with end faces, characterized in that a rotatable plug-in replacement seat structure is provided in the middle of the inner wall of the side wall; and a shielding seat support structure is provided at the bottom of the side walls and end faces.

[0005] Preferably, the rotatable plug-in replacement seat structure includes a fixed seat, the right end of which has a fixed cavity; the left end of the fixed cavity has one end of a connecting seat fixed from front to back; and the other end of the connecting seat has a connecting block threadedly connected to it.

[0006] Preferably, the supportable and fixed shielding base structure includes a bottom surface, and a fixing frame is bolted to the middle position of the front of the upper end of the bottom surface; the internal hinge of the fixing frame is connected to a shielding door.

[0007] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0008] 1. In this utility model, the side wall, fixing seat, fixing cavity, connecting seat and connecting block are arranged in a cooperative manner, which is beneficial to the use of the connecting seat and connecting block for threaded connection, and facilitates replacement and installation during use.

[0009] 2. In this utility model, the side wall, top surface, end surface, bottom surface, fixing frame and shielding door are arranged in a cooperative manner, which is beneficial to the purpose of bottom shielding during the experiment by setting the bottom surface. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model.

[0011] Figure 2 This is a structural schematic diagram of the rotatable plug-in replacement seat structure of this utility model.

[0012] Figure 3 This is a structural diagram of the supportable and fixed shielding base structure of this utility model.

[0013] In the picture:

[0014] 1. Side wall; 2. Top surface; 3. End face; 4. Rotatable plug-in replacement seat structure; 41. Fixed seat; 42. Fixed cavity; 43. Connecting seat; 44. Connecting block; 5. Supporting and fixing shielding seat structure; 51. Bottom surface; 52. Fixed frame; 53. Shielding door. Detailed Implementation

[0015] The present invention will now be described in detail with reference to the accompanying drawings, as shown below. Figure 1 and attached Figure 2 As shown, a novel traveling-wave electromagnetic compatibility testing device for a shielded room includes a side wall 1, a top surface 2, an end surface 3, a rotatable plug-in replacement seat structure 4, and a shielding seat support and fixing structure 5. The upper end of the side wall 1 is cast with the bottom left and right sides of the top surface 2; the front and rear ends of the side wall 1 are cast with the end surface 3; the rotatable plug-in replacement seat structure 4 is respectively provided at the middle position of the inner wall of the side wall 1; the bottom ends of the side wall 1 and the end surface 3 are provided with the shielding seat support and fixing structure 5; the rotatable plug-in replacement seat structure 4 includes a fixing seat 41, a fixing cavity 42, and a connecting seat. 43 and connecting block 44, the fixing seat 41 has a fixing cavity 42 inside the right end; one end of the connecting seat 43 is fixed to the inner wall of the left end of the fixing cavity 42 from front to back; the other end of the connecting seat 43 is threadedly connected to the connecting block 44; when in use, the fixing seat 41 is fixed to the middle position of the inner wall of the side wall 1, and then the wire, transition section, parallel section, load resistor array and resistance wire are fixed between the connecting blocks 44, and the connecting blocks 44 are threadedly connected to the inside of the connecting seat 43, so as to facilitate replacement and fixation during the experiment.

[0016] In this implementation plan, in conjunction with the appendix Figure 3As shown, the supportable and fixed shielding base structure 5 includes a bottom surface 51, a fixed frame 52, and a shielding door 53. The fixed frame 52 is bolted to the middle position of the front of the upper end of the bottom surface 51. The shielding door 53 is connected to the inside of the fixed frame 52 by a hinge. It is also fixed to the upper end of the bottom surface 51 through the side wall 1 and the end face 3, which facilitates bottom shielding during the experiment. The shielding door 53 can be opened and closed, which facilitates the connection of the connecting seat 43 and the connecting block 44 with threads during the experiment, making it easy to replace and fix during the experiment.

[0017] In this embodiment, specifically, the sidewall 1, top surface 2, and end surface 3 are arranged in a box shape; a through hole is provided in the middle of the bottom end of the end surface 3 at the front end.

[0018] In this embodiment, specifically, the connecting blocks 44 are sequentially fixed with wires, transition sections, parallel sections, load resistor arrays, and resistance lines.

[0019] In this embodiment, specifically, the fixing seat 41 is bolted to the middle position of the inner wall of the side wall 1.

[0020] In this embodiment, specifically, a sealing ring is provided between the fixed frame 52 and the shielding door 53.

[0021] In this embodiment, specifically, the bottom ends of the side wall 1 and the end face 3 are respectively fixed to the bottom surface 51; the fixing frame 52 is fixed at the middle position inside the bottom end of the end face 3 set at the front end.

[0022] Working principle

[0023] In this invention, during use, the fixing base 41 is fixed to the middle position of the inner wall of the side wall 1. Then, the wire, transition section, parallel section, load resistor array, and resistance wire are fixed between the connecting blocks 44. The connecting blocks 44 are threaded to the inside of the connecting base 43, which facilitates replacement and fixation during the experiment. At the same time, it is fixed to the upper end of the bottom surface 51 through the side wall 1 and the end face 3, which facilitates bottom shielding during the experiment. The shielding door 53 is opened and closed, which facilitates the threaded connection between the connecting base 43 and the connecting blocks 44 during the experiment, making it easy to replace and install during the experiment.

[0024] Any technical solution that achieves the above-mentioned technical effects by utilizing the technical solution described in this utility model, or by designing a similar technical solution inspired by the technical solution of this utility model, falls within the protection scope of this utility model.

Claims

1. A novel shielded chamber for electromagnetic compatibility test, comprising side walls (1), the upper ends of which are respectively cast with the bottom ends of the left and right sides of a top surface (2); the front and rear ends of the side walls (1) are respectively cast with end surfaces (3); characterized in that, In this novel shielded indoor traveling wave electromagnetic compatibility test device, the inner wall of the side wall (1) is provided with a rotatable plug-in replacement seat structure (4) at the middle position; the bottom of the side wall (1) and the end face (3) are provided with a shielding seat structure (5) that can support and fix the shielding seat.

2. The novel shielded chambered electromagnetic compatibility test device of claim 1, wherein, The rotatable plug-in replacement seat structure (4) includes a fixed seat (41), and a fixed cavity (42) is provided inside the right end of the fixed seat (41); one end of the connecting seat (43) is fixed from front to back on the inner wall of the left end of the fixed cavity (42); and a connecting block (44) is threadedly connected to the other end of the connecting seat (43).

3. The novel shielded chambered electromagnetic compatibility test device of claim 1, wherein, The supportable and fixed shielding base structure (5) includes a bottom surface (51), and a fixing frame (52) is bolted to the middle position of the front of the upper end of the bottom surface (51); the internal hinge of the fixing frame (52) is connected to a shielding door (53); the bottom ends of the side wall (1) and the end face (3) are respectively fixed to the bottom surface (51); the fixing frame (52) is fixed to the middle position of the bottom end of the end face (3) set at the front end.

4. The novel shielded indoor traveling wave electromagnetic compatibility test device as described in claim 1, characterized in that, The sidewall (1), top surface (2), and end face (3) are box-shaped; a through hole is provided in the middle of the bottom end of the end face (3) at the front end.

5. The novel shielded indoor traveling wave electromagnetic compatibility test device as described in claim 2, characterized in that, The connecting blocks (44) are fixed in sequence with wires, transition sections, parallel sections, load resistor arrays, and resistor lines.

6. The novel shielded indoor traveling wave electromagnetic compatibility test device as described in claim 2, characterized in that, The fixing base (41) is bolted to the middle position of the inner wall of the side wall (1).

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