Shielding performance testing device

Abstract

The utility model provides a shielding performance testing device which comprises a shielding box body, a first interface is arranged in the shielding box body, a box door is hinged to the surface of the shielding box body, a base is arranged in the shielding box body in a sliding mode through a linear guide rail, and a support is in threaded connection with the surface of the base. And a plurality of expansion seats are fixedly arranged on the bracket through a connecting mechanism. The bracket is arranged on the surface of the base, the expansion seat is arranged on the surface of the bracket to connect the first interface and the second interface, and the base can drive the expansion seat to move synchronously through the bracket when moving in the shielding box body, so that the second interface can be moved to a position close to the box door; the tested equipment is placed on the base and then is connected with the second interface, so that the connection between the tested equipment and the first interface is realized, and a hand does not need to stretch into a deep position of the shielding box body to connect the tested equipment and the first interface, so that the operation is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of shielding boxes, and particularly relates to a shielding performance testing device. Background Art

[0002] A shielding performance testing device is a device for providing a non-interference testing environment for a wireless communication device to be tested. Generally, a shielding box is used for testing. The shielding box is a shielding body made of conductive or magnetic materials in various shapes such as shells, plates, and sleeves, which limits the electromagnetic ability within a certain space range and is a metal body used to suppress radiation interference;

[0003] At present, different interfaces are provided on the inner wall of the shielding box so that different devices can be connected through the interfaces during use. However, since the interfaces are arranged inside the shielding box, when connecting, the device to be tested needs to be placed in the box body and then the hand is extended deep into the box body to connect the wire harness with the interface. If the device to be tested is relatively large, the remaining space inside the box body will be reduced, making it very inconvenient to connect the wire harness with the interface at this time. Moreover, the types of interfaces are always limited, and the interfaces inside the box body cannot adapt to all devices to be tested. Content of the Utility Model

[0004] The purpose of the utility model is to provide a shielding performance testing device to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A shielding performance testing device includes a shielding box body. A first interface is arranged inside the shielding box body. A box door is hinged on the surface of the shielding box body. A base is slidably arranged inside the shielding box body through a linear guide rail. A bracket is threadedly connected to the surface of the base. A plurality of expansion seats are fixedly arranged on the bracket through a connecting mechanism. A second interface is arranged on the surface of the expansion seat. The first interface and the second interface are electrically connected;

[0007] The connecting mechanism includes a connecting arm and a claw. The connecting arm is fixedly arranged on one side of the expansion seat. The claw is fixedly arranged on the surface of the connecting arm. The connecting arm is attached to the surface of the bracket. One side of the claw abuts against the surface of the bracket;

[0008] A disassembly mechanism for separating the expansion seat from the surface of the bracket is arranged on the surface of the bracket.

[0009] Preferably, the disassembly mechanism includes a push rod, a connecting plate, a cavity and a guide post. The cavity is arranged inside the bracket and communicates with the outside. The guide post is slidably arranged in the cavity. One end of the connecting plate is hinged to the side surface of the guide post. One end of the push rod is hinged to one end of the connecting plate. The push rod is slidably arranged on the surface of the bracket through a guiding member and abuts against the surface of the claw.

[0010] Preferably, the guiding member includes a T-shaped track fixedly arranged on the surface of the bracket and a sliding groove arranged on the surface of the push rod. The push rod is slidably arranged on the surface of the T-shaped track through the sliding groove.

[0011] Preferably, a baffle is fixedly arranged on the surface of the guide post. The baffle is slidably arranged on the inner wall of the cavity. An elastic member is arranged between the baffle and the cavity.

[0012] Preferably, the elastic member is set as a spring. Two ends of the spring are respectively fixed to the inner wall of the cavity and the surface of the baffle. The spring is sleeved on the surface of the guide post.

[0013] Preferably, a limiting groove is arranged on the surface of the bracket. The top and bottom of the expansion base are integrally formed with protruding portions matching the limiting groove. The protruding portions are slidably arranged in the limiting groove.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] 1. A bracket is arranged on the surface of the base of the present utility model, and an expansion base is arranged on the surface of the bracket to connect the first interface and the second interface. When the base moves inside the shielding box body, the expansion base can be driven by the bracket to move synchronously, which enables the second interface to be moved to a position close to the box door. After placing the device under test on the base and connecting it to the second interface, the connection between the device under test and the first interface is realized, without the need to reach deep into the shielding box body with hands to connect the device under test and the first interface, which is convenient for operation;

[0016] 2. Through the arrangement of the connection mechanism, the detachable connection between the expansion base and the bracket can be realized in the present utility model, and through the arrangement of the disassembly mechanism, it is convenient to replace the type of the expansion base at any time. When the device under test is replaced, the corresponding second interface can be replaced, so that the shielding box body can adapt to various devices under test. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the main structure of the present utility model;

[0018] Figure 2 is a schematic diagram of the internal structure of the present utility model;

[0019] Figure 3Schematic diagram of the connection structure between the bracket and the expansion base of the present utility model;

[0020] Figure 4 Schematic diagram of the main structure of the bracket of the present utility model;

[0021] Figure 5 For the present utility model Figure 4 Enlarged schematic diagram of area A in;

[0022] Figure 6 Schematic diagram of the internal structure of the cavity of the present utility model;

[0023] Figure 7 Schematic diagram of the main structure of the expansion base of the present utility model.

[0024] In the figure: 1, shielding box body; 2, first interface; 3, box door; 4, base; 5, bracket; 6, expansion base; 7, second interface; 8, connecting arm; 9, claw; 10, push rod; 11, connecting plate; 12, cavity; 13, guide post; 14, T-shaped track; 15, chute; 16, baffle; 17, spring; 18, limit groove; 19, convex part. Specific implementation manners

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present utility model.

[0026] Please refer to Figure 1-7 , the present utility model provides a shielding performance test device, including a shielding box body 1, a first interface 2 is arranged inside the shielding box body 1, a box door 3 is hinged on the surface of the shielding box body 1, a base 4 is slidably arranged inside the shielding box body 1 through a linear guide rail, a bracket 5 is threadedly connected to the surface of the base 4, a plurality of expansion bases 6 are fixedly arranged on the bracket 5 through a connection mechanism, a second interface 7 is arranged on the surface of the expansion base 6, the first interface 2 and the second interface 7 are electrically connected, the connection mechanism includes a connecting arm 8 and a claw 9, the connecting arm 8 is fixedly arranged on one side of the expansion base 6, the claw 9 is fixedly arranged on the surface of the connecting arm 8, the connecting arm 8 is attached to the surface of the bracket 5, and one side of the claw 9 abuts against the surface of the bracket 5.

[0027] Please refer to Figure 1 , 2、 3, 4, and 5. First, move the extension base 6 horizontally on the bracket 5 so that the extension base 6 drives the two connecting arms 8 and the claw 9 to contact both sides of the bracket 5 at the same time. At this time, as the extension base 6 moves, the side surface of the extension base 6 can abut against the surface of the bracket 5. Since the distance between the two connecting arms 8 is the same as the width of the bracket 5, the claw 9 will hinder this movement of the extension base 6. In this embodiment, both the connecting arm 8 and the claw 9 are made of elastic rubber or plastic materials, which enables the connecting arm 8 to undergo slight elastic deformation when subjected to the pressure of the bracket 5. When the extension base 6 can no longer move, the connecting arm 8 can drive the claw 9 to reset through its own elastic force, so that the side surface of the claw 9 contacts the side surface of the bracket 5. If the extension base 6 is pulled in the reverse direction at this time, then the claw 9 will exert pressure on the bracket 5, and the bracket 5 will hinder the reverse movement of the claw 9, thus realizing the fixed connection between the bracket 5 and the extension base 6.

[0028] It should be noted that a limiting groove 18 is provided on the surface of the bracket 5, and a convex portion 19 matching the limiting groove 18 is integrally formed at the top and bottom of the extension base 6. The convex portion 19 is slidably arranged in the limiting groove 18. Through the arrangement of the limiting groove 18 and the convex portion 19, the movement process of the extension base 6 can be limited, so that the extension base 6 can move linearly on the surface of the bracket 5.

[0029] A disassembly mechanism for separating the extension base 6 from the surface of the bracket 5 is provided on the surface of the bracket 5. The disassembly mechanism includes a push rod 10, a connecting plate 11, a cavity 12, and a guide post 13. The cavity 12 is arranged inside the bracket 5 and communicates with the outside. The guide post 13 is slidably arranged in the cavity 12. One end of the connecting plate 11 is hinged to the side surface of the guide post 13, and one end of the push rod 10 is hinged to one end of the connecting plate 11. The push rod 10 is slidably arranged on the surface of the bracket 5 through a guiding member and abuts against the surface of the claw 9.

[0030] Please refer to Figure 3 、 4 and 7. The cooperation between the claw 9 and the bracket 5 can realize the horizontal limit of the extension base 6. Therefore, if the extension base 6 needs to be disassembled, it is necessary to push the two claws 9 away from each other between the two claws 9 so that the extension base 6 will not be restricted by the claw 9 during horizontal movement. Therefore, a disassembly mechanism is provided in this embodiment. When the guide post 13 is pressed, the guide post 13 can move inside the cavity 12. At this time, the end of the guide post 13 far from the extension base 6 will gradually move towards the direction close to the extension base 6. At this time, one end of the guide post 13 can drive the connecting plate 11 to move synchronously. Since the length of the connecting plate 11 is fixed and unchanged, when one end of the connecting plate 11 approaches the bracket 5, the other end of the connecting plate 11 will push the push rod 10 to move horizontally on the surface of the bracket 5, so that the push rod 10 pushes the claw 9 away from the surface of the bracket 5, thus realizing the disassembly of the extension base 6. In this process.

[0031] The guiding member includes a T-shaped rail 14 fixedly arranged on the surface of the bracket 5 and a sliding groove 15 arranged on the surface of the push rod 10. The push rod 10 is slidably arranged on the surface of the T-shaped rail 14 through the sliding groove 15.

[0032] Please refer to Figure 5 , when the push rod 10 moves, it can horizontally move on the surface of the T-shaped rail 14 through the sliding groove 15. Through the cooperation of the sliding groove 15 and the T-shaped rail 14, the push rod 10 can always fit on the surface of the bracket 5 during movement, so that the push rod 10 can push the claw 9 away from the surface of the bracket 5.

[0033] A baffle 16 is fixedly arranged on the surface of the guide post 13. The baffle 16 is slidably arranged on the inner wall of the cavity 12. An elastic member is arranged between the baffle 16 and the cavity 12. The elastic member is set as a spring 17. The two ends of the spring 17 are respectively fixed to the inner wall of the cavity 12 and the surface of the baffle 16. The spring 17 is sleeved on the surface of the guide post 13.

[0034] Please refer to Figure 6 , when the guide post 13 is not pressed (i.e., the initial state), the spring 17 is in an undeformed state. When the guide post 13 is pressed, the guide post 13 can drive the baffle 16 to move synchronously inside the cavity 12. At this time, the distance between the baffle 16 and one side of the cavity 12 will increase, thereby stretching the spring 17 and causing the spring 17 to deform and store energy. And through the above process, the push rod 10 can push the claw 9 away from the surface of the bracket 5. When the guide post 13 is released, the spring 17 can pull the baffle 16 back to its original position through its own elastic force, so that the guide post 13 returns to its original position. After the guide post 13 returns to its original position, it can drive the push rod 10 to return to its original position through the connecting arm 8, so as to facilitate the subsequent installation of a new expansion seat 6.

[0035] Although the embodiments of the present invention have been shown and described, for those skilled in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A shielding performance testing device, comprising a shielding box (1), characterized in that: The shielding box (1) is provided with a first interface (2) inside, the surface of the shielding box (1) is hinged with a box door (3), the inside of the shielding box (1) is provided with a base (4) slidingly arranged via a linear guide rail, the surface of the base (4) is threadedly connected with a bracket (5), a plurality of expansion seats (6) are fixedly arranged on the bracket (5) via a connecting mechanism, a second interface (7) is provided on the surface of the expansion seat (6), and the first interface (2) and the second interface (7) are electrically connected; The connecting mechanism comprises a connecting arm (8) and a claw (9), wherein the connecting arm (8) is fixedly arranged on one side of the expansion seat (6), the claw (9) is fixedly arranged on the surface of the connecting arm (8), the connecting arm (8) is attached to the surface of the bracket (5), and one side of the claw (9) is in contact with the surface of the bracket (5); The surface of the bracket (5) is provided with a disassembly mechanism for separating the expansion seat (6) from the surface of the bracket (5).

2. A shielding performance testing device according to claim 1, characterized in that: The disassembly mechanism comprises a push rod (10), a connecting plate (11), a cavity (12) and a guide column (13); the cavity (12) is arranged inside the bracket (5) and communicated with the outside; the guide column (13) is slidably arranged in the cavity (12); one end of the connecting plate (11) is hinged to the side of the guide column (13); one end of the push rod (10) is hinged to one end of the connecting plate (11); the push rod (10) is slidably arranged on the surface of the bracket (5) through a guide member and contacts the surface of the claw (9).

3. A shielding performance testing device according to claim 2, characterized in that: The guide member comprises a T-shaped track (14) fixedly arranged on the surface of the bracket (5), and a slide groove (15) arranged on the surface of the push rod (10), and the push rod (10) is slidably arranged on the surface of the T-shaped track (14) through the slide groove (15).

4. A shielding performance testing device according to claim 3, characterized in that: A baffle (16) is fixedly arranged on the surface of the guide pillar (13), and the baffle (16) is slidably arranged on the inner wall of the cavity (12), and an elastic member is arranged between the baffle (16) and the cavity (12).

5. A shielding performance testing device according to claim 4, characterized in that: The elastic member is configured as a spring (17), the two ends of which are respectively fixed to the inner wall of the cavity (12) and the surface of the baffle (16), and the spring (17) is sleeved on the surface of the guide pillar (13).

6. A shielding performance testing device according to claim 1, characterized in that: A limiting groove (18) is provided on the surface of the bracket (5), and a protrusion (19) matching the limiting groove (18) is integrally formed on the top and bottom of the expansion seat (6), and the protrusion (19) is slidably arranged in the limiting groove (18).

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