A door panel structure suitable for a shielded box

Abstract

The utility model discloses a door plate structure suitable for shielding box belongs to shielding test box technical field, including box, the front outer wall of box is fixedly connected with door frame, is set up in the inner wall of door frame and has the clamping groove, the first gasbag is fixedly connected in the clamping groove, the recess of door frame left side is fixedly connected with first mounting block, the second mounting block is movably connected on first mounting block, the outer wall of second mounting block is fixedly connected with door plate, the edge of door plate outer wall is fixedly connected with second gasbag, and the outer end of support is fixedly connected with the clamping block. This door plate structure suitable for shielding box, the second gasbag of door plate edge and the first gasbag in door frame clamping groove form first physical seal, and the electromagnetic leakage path is blocked, and the conductive rubber clamping block of door plate outer wall is embedded in the clamping groove through first return spring, and forms second electromagnetic seal, and the electromagnetic isolation performance is improved to double structure, and the electromagnetic disorder and signal distortion in the box are avoided.

Description

Technical Field

[0001] This utility model relates to the field of shielded test box technology, specifically a door panel structure suitable for shielded test boxes. Background Technology

[0002] A shielded enclosure is a device used to isolate external electromagnetic interference and prevent internal signal leakage. Made of conductive or magnetic materials, it utilizes the principle of electromagnetic shielding to block the propagation path of electromagnetic waves. When an external electromagnetic signal comes into contact with the enclosure surface, an induced current is generated on the metal surface. This current produces a reverse electromagnetic field that cancels out external interference. Simultaneously, electromagnetic signals generated by internal devices are confined within the enclosure, preventing interference with other devices or information leakage. It is widely used in testing wireless communication products such as mobile phones and routers, ensuring accurate signal testing. In the automotive electronics field, it is used to test the anti-interference capabilities of in-vehicle electronic modules. In the consumer electronics industry, the radio frequency performance testing of products such as smartwatches and Bluetooth headsets also relies heavily on shielded enclosures. With the development of 5G and IoT technologies, the performance of shielded enclosures is continuously improving, with miniaturization, automation, and intelligence becoming new trends, providing reliable assurance for high-precision electromagnetic environment testing.

[0003] For example, patent CN212965093U discloses a door panel structure suitable for shielding boxes, including a main door panel. The front of the main door panel has a panel assembly and the back panel has a height adjustment assembly. The panel assembly includes a panel cover and a switch module, an interface module, and a signal indicator module disposed thereon. The height adjustment assembly has a vertically disposed loading plate clamping assembly and a guide rail fixing assembly, both of which are adjusted vertically on the height adjustment assembly. One end of the loading plate is connected to the loading plate clamping assembly, and one end of the guide rail is connected to the guide rail fixing assembly. The main door panel has a filter opening with a height higher than the height adjustment assembly, and a filter assembly is disposed therein. The connecting wires of the switch module, the interface module, and the signal indicator module pass through the filter assembly. However, when the existing device is in use, the sealing performance between the door panel and the shielding box is not good, which can easily lead to electromagnetic signal leakage, causing electromagnetic environment disorder inside the box, and distortion and bit errors in the signal transmission of electronic equipment. This seriously affects the shielding effectiveness of the shielding box. Moreover, when the door panel is subjected to external impact, the door panel will be dented, causing circuit breakage, component displacement or even damage, which greatly shortens the service life of the equipment and increases maintenance costs and equipment downtime risk.

[0004] Therefore, in order to solve this problem, we propose a door panel structure suitable for shielding boxes. Utility Model Content

[0005] The purpose of this utility model is to provide a door panel structure suitable for shielding boxes, so as to solve the problems mentioned in the background art. When the existing device is used, the sealing performance between the door panel and the shielding box body is poor, which can easily lead to electromagnetic signal leakage, causing electromagnetic environment disorder inside the box, distortion and bit errors in the signal transmission of electronic equipment, which seriously affects the shielding effectiveness of the shielding box. Moreover, when the door panel is subjected to external impact, the door panel will be dented, causing circuit breakage, component displacement or even damage, which greatly shortens the service life of the equipment and increases maintenance costs and equipment downtime risk.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a door panel structure suitable for a shielded box, comprising a box body, a door frame fixedly connected to the front outer wall of the box body, a locking groove provided on the inner wall of the door frame, a first airbag fixedly connected in the locking groove, a first mounting block fixedly connected in a groove on the left side of the door frame, a second mounting block movably connected to the first mounting block, a door panel fixedly connected to the outer wall of the second mounting block, a second airbag fixedly connected to the edge of the outer wall of the door panel, the second airbag being located in a groove on the outer wall of the door panel, a first return spring uniformly fixedly connected in a strip-shaped groove on the outer wall of the door panel, a support block fixedly connected to the outer end of the first return spring, and a locking block fixedly connected to the outer end of the support block, the locking block being made of conductive rubber.

[0007] Furthermore, a handle is fixedly connected to the center of the top surface of the box, and four feet are fixedly connected to the bottom of the box. Shock-absorbing springs are movably sleeved on the outer wall of the feet.

[0008] Furthermore, a bolt is threaded onto one side of the outer wall of the door frame, and a handle is fixedly connected to the outer end of the bolt, with the end of the bolt extending into the door panel.

[0009] Furthermore, a fixing block is rotatably connected in the groove of the outer wall of the door panel, and a toggle block is fixedly connected to the outer wall of the fixing block.

[0010] Furthermore, blocks are fixedly connected to the four corners of the inner wall of the door frame, sleeves are fixedly connected to the front of the blocks, connecting rods are slidably connected inside the sleeves, and buffer springs are fixedly connected to the inner ends of the connecting rods.

[0011] Furthermore, the engaging groove is adapted to the engaging block, and the door frame and door panel are engaged and connected through the engaging groove and engaging block.

[0012] Furthermore, a second return spring is fixedly connected to the inner wall of the fixing block, and the end of the second return spring is fixedly connected to the inner wall of the groove on the outer wall of the door panel.

[0013] Compared with the prior art, the beneficial effects of this utility model are: the door panel structure applicable to the shielding box adopts a novel structural design, the specific details of which are as follows:

[0014] (1) The door panel structure applicable to the shielding box will compress the first airbag after the locking block is engaged. At this time, the second airbag on the edge of the door panel is tightly fitted with the first airbag in the locking groove of the door frame, forming the first physical seal, which effectively blocks the electromagnetic leakage path. At the same time, the conductive rubber locking block connected to the outer wall of the door panel through the first reset spring is embedded in the locking groove by the spring push during the locking process, and the conductive properties of the conductive rubber are used to form the second electromagnetic seal. This double sealing structure significantly improves the electromagnetic isolation performance and can effectively avoid electromagnetic disturbance and signal distortion problems in the box.

[0015] (2) When the door panel of the shielding box is impacted, the impact force is transmitted through the structure to the sleeves and connecting rods at the four corners of the inner wall of the door frame. The buffer spring inside the sleeve is compressed by the impact load and converts the kinetic energy into elastic potential energy through elastic deformation, which effectively slows down the displacement speed of the door panel and avoids structural damage caused by rigid collision. After the impact force disappears, the buffer spring resets itself by its own elasticity and pushes the connecting rod back to the initial position, continuously maintaining the stable state of the door panel.

[0016] Furthermore, the bottom support legs of the enclosure are fitted with shock-absorbing springs to reduce vibration transmission during equipment operation; a handle is installed on the top surface for easy handling and to improve the practicality of the equipment. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a schematic diagram of the exploded structure of this utility model;

[0019] Figure 3 This is a three-dimensional schematic diagram of the door frame of this utility model;

[0020] Figure 4 This is a three-dimensional cross-sectional view of the door frame of this utility model;

[0021] Figure 5 This is an exploded view of the mounting component of this utility model;

[0022] Figure 6 This is an exploded view of the sealing element of this utility model;

[0023] Figure 7 This is a three-dimensional cross-sectional view of the shock absorber of this utility model.

[0024] In the diagram: 1. Box body; 2. Door frame; 21. Engaging groove; 211. Bolt; 212. First airbag; 22. Door panel; 221. Second airbag; 23. First return spring; 231. Support block; 232. Engaging block; 24. Fixing block; 241. Actuating block; 242. Second return spring; 3. Sleeve; 31. Connecting rod. 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] This utility model provides the following technical solution: a door panel structure suitable for shielding boxes.

[0027] Example 1: A door panel structure suitable for shielded enclosures, using two sets of locking blocks 232, a first airbag 212, and a second airbag 221, etc. The locking blocks 232 utilize their conductive rubber material for a single seal. The locking blocks 232 compress the first airbag 212, causing the first airbag 212 to compress the second airbag 221, achieving a second seal. This achieves a double seal while installing the door panel 22, preventing the poor sealing performance between the existing shielded enclosure door and the enclosure, which can easily lead to electromagnetic signal leakage and disrupt the electromagnetic environment inside the enclosure. Figure 1 - Figure 6 As shown, a door panel structure suitable for a shielded enclosure includes a enclosure body 1. A door frame 2 is fixedly connected to the front outer wall of the enclosure body 1. A locking groove 21 is provided on the inner wall of the door frame 2. A first airbag 212 is fixedly connected in the locking groove 21. A first mounting block is fixedly connected in a groove on the left side of the door frame 2. A second mounting block is movably connected to the first mounting block. A door panel 22 is fixedly connected to the outer wall of the second mounting block. A second airbag 221 is fixedly connected to the edge of the outer wall of the door panel 22. The second airbag 221 is located in a groove on the outer wall of the door panel 22. A first return spring 23 is uniformly fixedly connected in the strip groove on the outer wall of the door frame 2. A support block 231 is fixedly connected to the outer end of the first return spring 23. A locking block 232 is fixedly connected to the outer end of the support block 231. The locking block 232 is made of conductive rubber. A bolt 211 is threadedly connected to one side of the outer wall of the door frame 2. A handle is fixedly connected to the outer end of the bolt 211, and the end of the bolt 211 extends into the door panel 22. The locking groove 21 is adapted to the locking block 232, and the door frame 2 and the door panel 22 are locked together by the locking groove 21 and the locking block 232.

[0028] When the door panel 22 is closed, the second airbag 221 at the edge of the door panel 22 first embeds into the locking groove 21 and presses against the first airbag 212 in the groove to form a preliminary physical seal, effectively blocking external electromagnetic signals from seeping into the box 1 through the gap. As the door panel 22 is further closed, the first return spring 23 pushes the conductive rubber locking block 232 to be fully embedded in the locking groove 21 by means of elastic potential energy. During this process, the locking block 232 squeezes the first airbag 212, and through the transmission of force, the first airbag 212 simultaneously squeezes the second airbag 221, causing the double airbag structure to fit tightly. At the same time, the conductive rubber locking block 232 uses its conductivity to form a continuous conductive path with the door frame 2, and cancels the electromagnetic leakage at the gap through the principle of electromagnetic induction, ultimately achieving the dual effect of physical sealing and electromagnetic sealing, significantly improving the electromagnetic isolation performance of the shielding box.

[0029] Example 2: Unlike Example 1, the sleeve 3, connecting rod 31, and buffer spring provide cushioning protection for the door panel 22 when it is impacted. This prevents the door panel 22 from denting when subjected to external impacts, which could lead to circuit breakage, component displacement, or even damage, significantly shortening the equipment's lifespan and increasing maintenance costs and downtime risks. Figure 7 As shown, a handle is fixedly connected to the middle of the top surface of the box 1, and four feet are fixedly connected to the bottom of the box 1. Shock-absorbing springs are movably sleeved on the outer wall of the feet. A fixing block 24 is rotatably connected in the groove of the outer wall of the door panel 22. A toggle block 241 is fixedly connected to the outer wall of the fixing block 24. A block is fixedly connected to the four feet of the inner wall of the door frame 2. A sleeve 3 is fixedly connected to the front of the block. A connecting rod 31 is slidably connected inside the sleeve 3. A buffer spring is fixedly connected to the inner end of the connecting rod 31. A second return spring 242 is fixedly connected to the inner wall of the groove on the outer wall of the door panel 22. The end of the second return spring 242 is fixedly connected to the inner wall of the groove on the outer wall of the door panel 22.

[0030] When the door panel 22 is impacted, the impact force is transmitted to the sleeves 3 and connecting rods 31 at the four corners of the inner wall of the door frame 2. The internal buffer springs are compressed and contracted, converting kinetic energy into elastic potential energy, slowing down the displacement speed of the door panel 22, and avoiding structural damage caused by rigid collision. After the impact force disappears, the springs return to their original position, pushing the connecting rods 31 back to their original position, maintaining the stability of the door panel 22. During installation, the bolts 211 on the outside of the door frame 2 are rotated so that the ends of the bolts 211 extend into the inside of the door panel 22 for fixation. The fixing block 24 is rotated in conjunction with the toggle block 241, and the second return spring 242 assists in clamping, achieving double fixation of the door panel 22 and the door frame 2, ensuring a tight seal. The shock-absorbing springs at the bottom of the housing 1 absorb vibrations during equipment operation or transportation through elastic deformation, reducing the impact on internal precision components. The top handle provides a point of leverage, facilitating manual handling or position adjustment.

[0031] The above is the entire working process of the device, and all contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0032] 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. A door panel structure suitable for a shielded enclosure, comprising an enclosure body (1), characterized in that: A door frame (2) is fixedly connected to the front outer wall of the box (1). A locking groove (21) is provided on the inner wall of the door frame (2). A first airbag (212) is fixedly connected in the locking groove (21). A first mounting block is fixedly connected in the groove on the left side of the door frame (2). A second mounting block is movably connected to the first mounting block. A door panel (22) is fixedly connected to the outer wall of the second mounting block. A second airbag (221) is fixedly connected at the edge of the outer wall of the door panel (22). The second airbag (221) is located in the groove on the outer wall of the door panel (22). A first return spring (23) is evenly fixedly connected in the strip groove on the outer wall of the door panel (22). A support block (231) is fixedly connected to the outer end of the first return spring (23). A locking block (232) is fixedly connected to the outer end of the support block (231). The locking block (232) is made of conductive rubber.

2. The door panel structure suitable for a shielded box according to claim 1, characterized in that: A handle is fixedly connected to the middle of the top surface of the box (1), and four feet are fixedly connected to the bottom of the box (1). Shock-absorbing springs are movably sleeved on the outer wall of the feet.

3. The door panel structure suitable for a shielded box according to claim 1, characterized in that: A bolt (211) is threaded onto one side of the outer wall of the door frame (2). A handle is fixedly connected to the outer end of the bolt (211), and the end of the bolt (211) extends into the door panel (22).

4. The door panel structure suitable for a shielded box according to claim 1, characterized in that: A fixing block (24) is rotatably connected in the groove of the outer wall of the door panel (22), and a toggle block (241) is fixedly connected on the outer wall of the fixing block (24).

5. A door panel structure suitable for a shielding box according to claim 1, characterized in that: The four corners of the inner wall of the door frame (2) are fixedly connected with blocks, and the front of the blocks is fixedly connected with sleeves (3). A connecting rod (31) is slidably connected inside the sleeve (3), and a buffer spring is fixedly connected to the inner end of the connecting rod (31).

6. A door panel structure suitable for a shielded box according to claim 1, characterized in that: The engaging groove (21) is adapted to the engaging block (232), and the door frame (2) and the door panel (22) are engaged and connected by the engaging groove (21) and the engaging block (232).

7. A door panel structure suitable for a shielding box according to claim 4, characterized in that: A second reset spring (242) is fixedly connected to the inner wall of the fixing block (24), and the end of the second reset spring (242) is fixedly connected to the inner wall of the groove on the outer wall of the door panel (22).

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