An anechoic chamber with adjustment function

Abstract

The utility model relates to the technical field of electric wave anechoic chamber, and disclose a kind of electric wave anechoic chamber with adjusting function, it is characterized by: including electric wave anechoic chamber ontology;Adjusting assembly is arranged on the electric wave anechoic chamber ontology, the adjusting assembly includes: box, setting in the electric wave anechoic chamber inside;Servo motor, fixedly connected to the box outer wall, and output end is inserted into the box inside;The utility model has the advantage that the size of wave-absorbing area is conveniently adjusted, when the size of wave-absorbing area in electric wave anechoic chamber ontology needs to be adjusted, operator starts servo motor and drives bidirectional screw rod to rotate, so that bidirectional screw rod drives two moving plates to move simultaneously, two moving plates move and drive wave-absorbing plate two on it to move simultaneously, make two wave-absorbing plate two pass through the obscuration area of wave-absorbing plate one change, and then the size of wave-absorbing area in electric wave anechoic chamber ontology is adjusted, solve the problem that the size of wave-absorbing area is not conveniently adjusted.

Description

Technical Field

[0001] This utility model relates to the field of anechoic chamber technology, specifically to an anechoic chamber with adjustable function. Background Technology

[0002] A semi-anechoic chamber, also known as an electromagnetic compatibility (EMC) anechoic chamber, is an electromagnetically shielded room with electromagnetic wave absorbing materials applied to the interior walls and ceiling. The floor serves as an ideal reflective surface, simulating open-field testing conditions. Various EMC tests require specific testing environments, with radiated emission and radiated immunity tests having the most stringent requirements. Since the transmission and reception of high-frequency electromagnetic fields ≥80MHz are based on the theory of the superposition of direct waves and reflected waves at the receiving point, an imperfect environment inevitably leads to significant testing errors. Therefore, the demand for a semi-anechoic chamber with a device for rapid installation and removal of absorbing materials is increasing.

[0003] Existing semi-anechoic chambers lay absorbing materials in designated areas. When conducting other EMC tests in the anechoic chamber, the size of the absorbing area needs to be adjusted according to the size of the testing instrument. When adjusting the size of the absorbing area, individual pieces of absorbing material need to be moved or installed one by one, which takes time and reduces the testing efficiency of the product. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides an anechoic chamber with adjustable functions, which has the advantage that the size of the absorbing area is easy to adjust, thus solving the problem that the size of the absorbing area is not easy to adjust.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: an anechoic chamber with an adjustment function, characterized in that: it includes an anechoic chamber body; the anechoic chamber body is provided with an adjustment component, the adjustment component including: a housing, disposed inside the anechoic chamber body; a servo motor, fixedly connected to the outer wall of the housing, with its output end inserted into the inner wall of the housing; a bidirectional threaded rod, fixedly connected to the output end of the servo motor and rotatably connected to the inner wall of the housing; a fixed plate, fixedly connected to the inner wall of the housing; a first absorbing plate, fixedly connected to the bottom of the fixed plate; two movable plates, threadedly connected to the outer wall of the bidirectional threaded rod and slidably connected to the inner wall of the housing, and symmetrically arranged; and a second absorbing plate, with a second absorbing plate fixedly connected to the bottom of each movable plate.

[0008] Preferably, both of the movable plates are provided with guide rail covers.

[0009] Preferably, a pressure sensor is fixedly connected to the outer wall of the fixing plate, and the pressure sensor is electrically connected to the servo motor.

[0010] Preferably, the anechoic chamber body is provided with a disassembly assembly, which includes: a mounting frame, inserted into the top of the anechoic chamber body; a fixing block, fixedly connected to the top of the enclosure and slidably connected to the inner side of the mounting frame; and bolts, inserted into the inner side of the mounting frame and the fixing block. The mounting frame and the fixing block are both threadedly connected to the bolts, and two bolts are symmetrically arranged.

[0011] Preferably, a positioning frame is fixedly connected to the outer wall of the fixing block.

[0012] Preferably, the sum of the lengths of the first absorbing plate and the two second absorbing plates is equal to the inner length of the anechoic chamber body.

[0013] (III) Beneficial Effects

[0014] Compared with the prior art, this utility model provides an anechoic chamber with adjustment function, which has the following beneficial effects:

[0015] This invention has the advantage of easily adjustable size of the absorbing area. When it is necessary to adjust the size of the absorbing area inside the anechoic chamber, the operator turns on the servo motor on the housing, which drives the bidirectional threaded rod to rotate. The bidirectional threaded rod then drives two moving plates to move simultaneously. As the two moving plates move, they also drive the second absorbing plates on them to move simultaneously. This allows the two second absorbing plates to adjust the size of the absorbing area inside the anechoic chamber by changing the area blocked by the first absorbing plate, thus solving the problem of the absorbing area being difficult to adjust. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a cross-sectional structural schematic diagram of the anechoic chamber body in this utility model;

[0018] Figure 3 This is a cross-sectional view of the box body in this utility model, excluding the guide rail cover;

[0019] Figure 4 This is a cross-sectional structural diagram of the mounting frame in this utility model.

[0020] In the picture:

[0021] 1. The main body of the anechoic chamber;

[0022] 2. Adjustment components; 21. Housing; 22. Servo motor; 23. Two-way threaded rod; 24. Fixing plate; 25. Wave-absorbing plate one; 26. Moving plate; 27. Wave-absorbing plate two;

[0023] 3. Disassembly of components; 31. Mounting frame; 32. Fixing block; 33. Bolts;

[0024] 4. Pressure sensor; 5. Guide rail cover; 6. Positioning frame. Detailed Implementation

[0025] 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.

[0026] Example 1

[0027] See Figure 1-4 An anechoic chamber with an adjustable function is characterized by comprising: an anechoic chamber body 1; an adjustable assembly 2 disposed on the anechoic chamber body 1, the adjustable assembly 2 comprising: a housing 21 disposed inside the anechoic chamber body 1; a servo motor 22 fixedly connected to the outer wall of the housing 21, with its output end inserted into the inner side of the housing 21; a bidirectional threaded rod 23 fixedly connected to the output end of the servo motor 22 and rotatably connected to the inner wall of the housing 21; and a fixing plate 24 fixedly connected to the housing. The inner wall of the body 21 includes: a wave-absorbing plate 25 fixedly connected to the bottom of the fixed plate 24; a movable plate 26 threadedly connected to the outer wall of the bidirectional threaded rod 23 and slidably connected to the inner side of the housing 21, with two plates symmetrically arranged; a wave-absorbing plate 27 fixedly connected to the bottom of each movable plate 26; a guide rail cover 5 provided on each of the two movable plates 26; and a pressure sensor 4 fixedly connected to the outer wall of the fixed plate 24, and the pressure sensor 4 electrically connected to the servo motor 22.

[0028] When ready for use, the operator places the anechoic chamber body 1 in the designated position. When it is necessary to adjust the size of the absorbing area inside the anechoic chamber body 1, the operator turns on the servo motor 22 on the housing 21, causing the servo motor 22 to drive the bidirectional threaded rod 23 to rotate. This causes the bidirectional threaded rod 23 to move the two movable plates 26 simultaneously. As the two movable plates 26 move, they also move the second absorbing plate 27 on them. This allows the two absorbing plates 27 to adjust the size of the absorbing area inside the anechoic chamber body 1 by changing the shielding area of ​​the first absorbing plate 25 on the fixed plate 24. The operation is simple, improving the practicality of the device. The movement of the movable plates 26 also moves the guide rail cover 5 on them. The device can be folded or unfolded to keep the groove on the housing 21 covered at all times, preventing dust and other debris from entering the inside of the housing 21 and causing frequent cleaning to prevent blockage, thus improving the convenience of the device. When the moving plate 26 moves, it causes the second absorbing plate 27 to come into contact with the pressure sensor 4. When the pressure exerted by the second absorbing plate 27 on the pressure sensor 4 reaches the set value on the pressure sensor 4, the pressure sensor 4 transmits an electrical signal to the controller, which then transmits the electrical signal to the servo motor 22. Subsequently, the servo motor 22 automatically shuts down to prevent operator error from causing excessive pressure damage between the second absorbing plate 27 and the fixed plate 24, thus improving the safety of the device.

[0029] Example 2

[0030] See Figure 1-4 Based on Embodiment 1, a disassembly function has been added;

[0031] The anechoic chamber body 1 is provided with a disassembly assembly 3, which includes: a mounting frame 31, inserted into the top of the anechoic chamber body 1; a fixing block 32, fixedly connected to the top of the housing 21 and slidably connected to the inner side of the mounting frame 31; and bolts 33, inserted into the inner side of the mounting frame 31 and the inside of the fixing block 32. The mounting frame 31 and the fixing block 32 are both threadedly connected to the bolts 33, and two bolts 33 are symmetrically arranged. A positioning frame 6 is fixedly connected to the outer wall of the fixing block 32. The sum of the lengths of the first absorbing plate 25 and the two second absorbing plates 27 is equal to the inner length of the anechoic chamber body 1.

[0032] After use, the operator can unscrew the multiple bolts 33 on the mounting frame 31 to remove the fixing block 32, allowing the operator to remove the adjustment component 2 along with the fixing block 32. This facilitates the replacement or maintenance of the components of the adjustment component 2, improving the practicality of the device. When installing the adjustment component 2, the operator inserts the fixing block 32 into the inside of the mounting frame 31. When the positioning frame 6 on the fixing block 32 is close to the mounting frame 31, the threaded groove on the fixing block 32 aligns with the threaded groove on the mounting frame 31, making installation easier. The sum of the lengths of the first absorbing plate 25 and the two second absorbing plates 27 is equal to the inner length of the anechoic chamber body 1, thereby increasing the adjustment range of the device and improving its performance.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An electric wave anechoic chamber having a regulation function, characterized by: Includes an anechoic chamber body (1); the anechoic chamber body (1) is provided with an adjustment component (2), the adjustment component (2) including: The enclosure (21) is located inside the anechoic chamber body (1); A servo motor (22) is fixedly connected to the outer wall of the housing (21), and its output end is inserted into the inner side of the housing (21); A bidirectional threaded rod (23) is fixedly connected to the output end of the servo motor (22) and rotatably connected to the inner side wall of the housing (21); A fixing plate (24) is fixedly connected to the inner side wall of the box (21); A wave-absorbing plate (25) is fixedly connected to the bottom of the fixed plate (24); The movable plate (26) is threaded to the outer wall of the bidirectional threaded rod (23) and slidably connected to the inner side of the box (21), and there are two of them symmetrically arranged; Wave-absorbing plate two (27) is fixedly connected to the bottom of each of the movable plates (26).

2. The electric wave anechoic chamber having a regulation function according to claim 1, characterized in that: Both of the movable plates (26) are provided with guide rail covers (5).

3. The electric wave anechoic chamber with adjustment function according to claim 1, characterized in that: A pressure sensor (4) is fixedly connected to the outer wall of the fixed plate (24), and the pressure sensor (4) is electrically connected to the servo motor (22).

4. The electric wave anechoic chamber having a regulating function according to claim 1, wherein: The anechoic chamber body (1) is provided with a disassembly assembly (3), which includes: Mounting frame (31) is inserted into the top of the anechoic chamber body (1); The fixing block (32) is fixedly connected to the top of the box (21) and slidably connected to the inside of the mounting frame (31); Bolt (33) is inserted into the inner side of the mounting frame (31) and into the inside of the fixing block (32). The mounting frame (31) and the fixing block (32) are both threadedly connected to the bolt (33), and there are two bolts (33) symmetrically arranged.

5. The electric wave anechoic chamber having a regulating function according to claim 4, wherein: The outer wall of the fixing block (32) is fixedly connected to a positioning frame (6).

6. The electric wave anechoic chamber having a regulation function according to claim 1, wherein: The sum of the lengths of the first absorbing plate (25) and the two second absorbing plates (27) is equal to the inner length of the anechoic chamber body (1).

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