Electromagnetic shielding component and spliced shielding room

Abstract

The utility model discloses an electromagnetic shielding component and a spliced shielding chamber, and belongs to the technical field of electromagnetic shielding. In order to solve the technical problems that an existing electromagnetic shielding chamber is unreliable in fixing mode and low in disassembly and assembly efficiency, an electromagnetic shielding component is formed by splicing a plurality of shielding plates, each shielding plate is formed by clamping a 0.5-2 mm permalloy shielding layer through two layers of wood plates, and the side edges are provided with inserting grooves and inserting strips which are matched with each other to achieve seamless splicing; the splicing type shielding room adopts a modular frame structure and comprises a closed space composed of wallboards, a door body, a top plate and a bottom plate, the wallboards are connected with the top plate and the bottom plate through sliding rod assemblies, locking rods capable of rotating by 90 degrees are arranged at the outer ends of the sliding rods, and rapid inserting and fixing are achieved in cooperation with a winding roller and a pull rope of a driving assembly. A ratchet wheel and pawl braking mechanism is used for preventing back-off; matrix type insertion holes are formed in the top plate and the bottom plate, a spring reset mechanism is arranged in the wallboard installation frame, and an unlocking push rod is arranged on the cover plate. And the electromagnetic shielding effectiveness and the structural stability are obviously improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electromagnetic shielding, in particular to an electromagnetic shielding component and a spliced ​​shielding room. Background Art

[0002] With the rapid development of modern electronic information technology, electromagnetic interference (EMI) has become increasingly prominent, posing a serious threat to the normal operation of electronic equipment and the test accuracy of precision instruments, especially in situations requiring high electromagnetic shielding, such as data centers, medical equipment test rooms, and military communication facilities.

[0003] Traditional electromagnetic shielding rooms mostly adopt one-piece molding or welding fixation methods, or rely on bolt fastening or adhesive connection. Although these methods can achieve basic fixation, they are prone to loosening, falling off and other problems when facing high-intensity electromagnetic environments or long-term use, affecting the shielding effect. At the same time, the overall structure after splicing cannot be quickly and stably fixed and disassembled, and cannot adapt to the flexible configuration requirements in different application scenarios. For example: the patent document is the application of CN221264354U, which sets a locking component inside the electromagnetic shielding plate, destroying the sorting and continuous shielding performance. The patent document is the application of CN222395985U. The connection between the shielding components is unstable and is easily deformed or even falls apart by external force. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of discontinuous shielding performance and unreliable connection of shielding components in the prior art, and to propose an electromagnetic shielding component and a spliced ​​shielding room.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] An electromagnetic shielding member, comprising:

[0007] A plurality of shielding plates, each of the shielding plates comprising two wooden boards and a permalloy shielding interlayer sandwiched therebetween, wherein the thickness of the permalloy shielding interlayer is 0.5-2 mm;

[0008] One side of the shielding plate is provided with a slot, and the other side is provided with an inserting strip that plugs into and cooperates with the slot of the adjacent shielding plate. Multiple shielding plates can achieve seamless splicing of electromagnetic shielding surfaces through the cooperation of the slots and the inserting strips.

[0009] A spliced ​​shielding room, comprising the electromagnetic shielding component as described above, further comprising:

[0010] A frame structure formed by multiple wall panels and door bodies;

[0011] The top plate and the bottom plate are connected to the wall plates through fixing mechanisms respectively;

[0012] The inner sides of the wall panels, top panels and bottom panels are all fixedly connected with electromagnetic shielding components by screws;

[0013] Wherein, the fixing mechanism includes:

[0014] Two sets of sliding rods are slidably arranged on the top and bottom of the installation frame, and the outer ends of the sliding rods are provided with pivotable rotating rods;

[0015] The driving assembly includes a winding roller arranged through the first rotating shaft and a pull rope connected to the sliding rod. The sliding rod is driven to move by the winding pull rope so that the rotating rod locks the top plate and the bottom plate.

[0016] As a further improvement of the above technical solution:

[0017] The sliding rod is slidably connected to the mounting frame through a guide seat and is sleeved with a spring that provides a restoring elastic force;

[0018] The top of the top plate and the bottom plate are both provided with insertion holes used in conjunction with the rotating rod to form a limit lock.

[0019] Also included is a braking mechanism, the braking mechanism comprising:

[0020] a ratchet wheel fixed to the first rotating shaft;

[0021] a pawl pivotally connected to the mounting frame via a second rotating shaft;

[0022] The torsion spring sleeved on the second rotating shaft keeps the pawl in a meshing state with the ratchet wheel.

[0023] The mounting frame is provided with a detachable cover plate, and the cover plate is provided with:

[0024] Bolts threadedly connected to the sleeve of the mounting frame;

[0025] The waist-shaped hole contains a push rod that can push the pawl to unlock it.

[0026] The installation frame of the wall panel is a rectangular frame structure;

[0027] The jacks of the top plate and the bottom plate are arranged in a matrix;

[0028] The rotation angle of the rotating rod is 0-90°.

[0029] In the present invention, the electromagnetic shielding component is formed by splicing together multiple shielding plates. Each shielding plate includes two wooden boards and a permalloy shielding interlayer bonded in sequence. The permalloy shielding interlayer has excellent electromagnetic shielding performance and can effectively block the penetration of electromagnetic waves, thereby providing a high-efficiency electromagnetic shielding effect. The multiple shielding plates are spliced ​​in sequence by plugging in slots and inserts. The splicing method is simple and quick, and does not require complicated installation tools or steps.

[0030] In the utility model, the spliced ​​shielding room is characterized in that the fixing mechanism drives the sliding rod to move through the driving assembly, and then uses the rotating rod to fix the top plate and the bottom plate to the mounting frame. At the same time, the braking mechanism limits the driving assembly through the cooperation of the ratchet and the pawl to prevent the sliding rod from retreating, thereby ensuring the reliability of the fixation and effectively preventing loosening or falling off due to vibration or external force.

[0031] In the present invention, the spliced ​​shielding room adopts a modular design. Multiple wall panels and door bodies can be enclosed to form frame structures of different sizes to adapt to different space requirements. At the same time, the shielding panels are fixed to the wall panels, top panels and bottom panels by screws, making the assembly and disassembly process of the entire shielding room more flexible and convenient. It can be quickly assembled and disassembled according to actual needs, thereby improving the convenience and flexibility of use.

[0032] In the utility model, the slot and strip splicing design is used to achieve efficient and stable connection between the shielding plates, which significantly improves the electromagnetic shielding effect. At the same time, the sliding rod, rotating rod and drive assembly are used in conjunction with the ratchet pawl braking mechanism to achieve fast and reliable fixation between the wall panels and the top and bottom plates. It is not only easy to install, but also has strong fixing stability, effectively preventing electromagnetic leakage. In addition, the modular design allows the entire shielding room to be flexibly assembled and disassembled according to actual needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a schematic diagram of the three-dimensional structure of an electromagnetic shielding component proposed in the present utility model;

[0034] Figure 2 This is a partial cross-sectional structural diagram of a shielding plate of an electromagnetic shielding component proposed in the present invention;

[0035] Figure 3 This is a three-dimensional structural diagram of a spliced ​​shielding room proposed in the utility model;

[0036] Figure 4 This is a partial structural diagram of a spliced ​​shielding room proposed by the utility model;

[0037] Figure 5 This is a schematic diagram of the exploded structure of a spliced ​​shielding room wall panel proposed in the present invention;

[0038] Figure 6 for Figure 5 A schematic diagram of the enlarged structure of the middle part A;

[0039] Figure 7 for Figure 5 A schematic diagram of the enlarged structure of the middle B part;

[0040] Figure 8 This is a schematic diagram of the door structure of a spliced ​​shielding room proposed in the utility model.

[0041] In the figure: 1. Shielding plate; 2. Slot; 3. Insert; 4. Wooden board; 5. Permalloy shielding interlayer; 6. Top plate; 7. Bottom plate; 8. Wall panel; 9. Jack; 10. Mounting frame; 11. First rotating shaft; 12. Winding roller; 13. Pull rope; 14. Screw; 15. Sleeve; 16. Cover plate; 17. Waist-shaped hole; 18. Push rod; 19. Through hole; 20. Bolt; 21. Second rotating shaft; 22. Pawl; 23. Torsion spring; 24. Ratchet; 25. Sliding rod; 26. Rectangular groove; 27. Rotating rod; 28. Limiting ring; 29. ​​Spring; 30. Guide seat; 31. Connecting rod; 32. Door body. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0043] Example 1

[0044] Reference Figure 1-Figure 2 , an electromagnetic shielding component, comprising: a plurality of shielding plates 1, each shielding plate 1 adopts a specific structural design and assembly method to achieve a good electromagnetic shielding effect.

[0045] Each shielding panel 1 consists of two wooden boards 4 bonded together, followed by a permalloy shielding layer 5. The wooden boards 4 serve as the shielding panel's base, providing structural support. The permalloy shielding layer 5, with a thickness of 0.5-2 mm, offers excellent electromagnetic shielding performance, effectively blocking electromagnetic wave penetration. The two wooden boards 4 are firmly bonded to the permalloy shielding layer 5 with an adhesive, ensuring the overall stability and electromagnetic shielding performance of the shielding panel 1.

[0046] A slot 2 is provided on one side of the shielding plate 1, and an insert 3 that matches the slot 2 is fixed to the other side. When splicing multiple shielding plates 1, the insert 3 of one shielding plate 1 is inserted into the slot 2 of another shielding plate 1. Through the plug-in fit of the slot 2 and the insert 3, multiple shielding plates 1 are spliced ​​together in sequence. This makes splicing simple and quick, and the spliced ​​shielding plates 1 are tightly connected, effectively preventing electromagnetic wave leakage.

[0047] Reference Figure 3-Figure 8A shielded room includes the above-mentioned electromagnetic shielding component, as well as multiple wall panels 8, a door body 32, a top plate 6, and a bottom plate 7. The multiple wall panels 8 and the door body 32 form a frame-shaped structure, with a top plate 6 on the top and a bottom plate 7 on the bottom, together forming a closed shielded space. The door body 32 is the same as the wall panels 8, both of which are composed of a mounting frame and a cover plate 16, making it lightweight and convenient for entering the shielded room. Its sealing structure can choose a double-layer magnetic sealing strip, an inflatable sealing ring, or a liquid metal sealant. The inflatable sealing ring can achieve dynamic sealing compensation under an air pressure of 0.3-0.6MPa.

[0048] When assembling a spliced ​​shielding room, first, multiple shielding panels 1 are sequentially joined together to form the desired shielding layer. Then, screws 14 are used to secure the joined shielding panels 1 to one side of the wall panel 8, the bottom of the top panel 6, and the top of the bottom panel 7. This ensures that the shielding panels 1 are tightly attached to the wall panel 8, top panel 6, and bottom panel 7, forming a complete electromagnetic shielding layer.

[0049] The wall panel 8 includes a mounting frame 10 and a cover plate 16 disposed within the mounting frame 10. A fixing mechanism is provided within the mounting frame 10 for fixing the wall panel 8 between the top plate 6 and the bottom plate 7. The fixing mechanism includes two sets of sliding rods 25 and a drive assembly that slide through the top and bottom of the mounting frame 10. The sliding rods 25 can be designed with cylindrical, rectangular, or polygonal cross-sections to accommodate different load-bearing requirements, wherein the rectangular cross-section can provide better anti-torsion performance. A rectangular groove 26 is provided at the outer end of the sliding rod 25, and a rotating rod 27 is rotatably provided within the rectangular groove 26. Sockets 9 corresponding to the sliding rods 25 are provided on the sides of the top plate 6 and the bottom plate 7 that are close to each other.

[0050] The driving assembly includes a winding roller 12 arranged on one side of the mounting frame 10, which is rotated by the first rotating shaft 11. There are at least two sliding rods 25 in each group, and the inner ends of the two sliding rods 25 are welded with connecting rods 31. A pull rope 13 is provided through the outer wall of the winding roller 12. The pull rope 13 can be made of 304 stainless steel wire rope with a diameter of 1-5 mm, aramid fiber braided rope or carbon fiber composite cable, among which the tensile strength of the carbon fiber cable can reach 3-5 times that of the traditional steel wire rope at the same diameter. The two ends of the pull rope 13 are respectively fixedly connected to the two connecting rods 31, and the upper and lower groups of sliding rods 25 are brought close to each other by driving the winding roller 12 to rotate. In addition, a hexagonal inner hole is provided at the outer end of the first rotating shaft 11, which can be used with a hexagonal wrench.

[0051] When installing the wall panel 8, first place the wall panel 8 on top of the base plate 7 and align the sliding rod 25 with the socket 9. Then, pull the rotating rod 27 to rotate in the rectangular groove 26, so that the rotating rod 27 and the sliding rod 25 form a T-shaped structure. Next, insert the hexagonal wrench into the first rotating shaft 11, and turn the hexagonal wrench to drive the winding roller 12 to rotate. During the rotation of the winding roller 12, the pull rope 13 will be stored. Since the two ends of the pull rope 13 are fixedly connected to the upper and lower connecting rods 31 respectively, the storage of the pull rope 13 will drive the upper and lower connecting rods 31 to approach each other, and then drive the upper and lower sets of sliding rods 25 to approach each other. When the rotating rod 27 contacts the top plate 6 and the bottom plate 7, stop turning the hexagonal wrench. At this time, multiple rotating rods 27 contact the top plate 6 and the bottom plate 7 respectively.

[0052] The braking mechanism is disposed within the mounting frame 10 and is used to limit the position of the drive assembly. The braking mechanism includes a ratchet 24 fixedly mounted on the first rotating shaft 11, a second rotating shaft 21 fixedly mounted on one side of the mounting frame 10, a pawl 22 that is rotatably mounted on the outer wall of the second rotating shaft 21 via a bearing and cooperates with the ratchet 24, and a torsion spring 23 mounted on the outer wall of the second rotating shaft 21. The two ends of the torsion spring 23 respectively contact the outer wall of the second rotating shaft 21 and one side of the pawl 22, providing force for the pawl 22 to engage with the tooth groove of the ratchet 24. When the winding roller 12 rotates into position, the pawl 22 engages with the tooth groove of the ratchet 24 under the action of the torsion spring 23, limiting the winding roller 12 and preventing the sliding rod 25 from retreating. In this way, the wall panel 8 is firmly fixed between the top plate 6 and the bottom plate 7.

[0053] The present application can be used in the field of electromagnetic shielding, and can also be used in other fields applicable to the present application.

[0054] Example 2

[0055] refer to Figure 3-Figure 8 , improved on the basis of Example 1: A spliced ​​shielding room, which is applied to the field of electromagnetic shielding. In order to ensure the stability and accuracy of the sliding rod 25 during the sliding process, the outer wall sliding sleeve of the sliding rod 25 is provided with a guide seat 30. The guide seat 30 is welded to one side of the mounting frame 10 to provide a guiding function for the sliding rod 25. At the same time, the outer wall fixed sleeve of the sliding rod 25 is provided with a limit ring 28 that contacts the inner wall of the mounting frame 10 to limit the sliding range of the sliding rod 25. In addition, the outer wall of the sliding rod 25 is also sleeved with a spring 29. The spring 29 adopts a stainless steel compression spring with a wire diameter of 0.5-2mm, an outer diameter of 5-15mm, and a free length of 20-100mm. Its elastic coefficient is selected according to the specifications of the sliding rod 25. The two ends of the spring 29 are respectively in contact with the mutually close side of the limit ring 28 and the guide seat 30 through the connecting seat. When the wall panel 8 needs to be removed, the sliding rod 25 will move under the action of the spring 29, driving the rotating rod 27 away from the top plate 6 and the bottom plate 7, thereby releasing the fixation of the wall panel 8.

[0056] Multiple sleeves 15 are fixed to one side of the mounting frame 10. A plurality of through-holes 19 corresponding to the sleeves 15 are formed on one side of the cover plate 16. Bolts 20 threadedly connected to the sleeves 15 are located within the through-holes 19. To install the cover plate 16, first place it over the opening of the mounting frame 10, aligning the through-holes 19 with the sleeves 15. Then, insert the bolts 20 through the through-holes 19 and screw them into the sleeves 15, firmly securing the cover plate 16 to the mounting frame 10. To remove the cover plate 16, simply unscrew the bolts 20 from the sleeves 15.

[0057] Furthermore, to facilitate releasing the pawl 22 from its position on the ratchet wheel 24 when necessary, a waist-shaped hole 17 is formed on one side of the cover plate 16. A push rod 18 is disposed within the waist-shaped hole 17. One end of the push rod 18 extends below one side of the pawl 22. To release the pawl 22 from its position on the ratchet wheel 24, the push rod 18 is inserted into the waist-shaped hole 17 and pushed upward to rotate the pawl 22 on the second rotating shaft 21, thereby moving one end of the pawl 22 away from the outer tooth groove of the ratchet wheel 24.

[0058] During installation, the shielding plate 1 is fixed to one side of the wall panel 8, the bottom of the top panel 6, and the top of the bottom panel 7 by screws 14. Then, the wall panel 8 is inserted into the top of the bottom panel 7 and the bottom of the top panel 6 by using the sliding rod 25 and the socket 9, leaving a door opening. The door body 32 is installed in the door opening of the top panel 6 and the bottom panel 7.

[0059] The rotating rod 27 is pulled to rotate in the rectangular groove 26, so that the rotating rod 27 and the sliding rod 25 form a T shape. The hexagonal wrench is inserted into the first rotating shaft 11 and rotated to drive the winding roller 12 to rotate. During the rotation of the winding roller 12, the pull rope 13 can be retracted. During the retraction process, the other end of the pull rope 13 can be used to drive the upper and lower connecting rods 31 to move closer to each other, and the upper and lower sets of sliding rods 25 can be driven closer to each other until the rotating rod 27 contacts the top plate 6 and the bottom plate 7. At the same time, the pawl 22 can be snapped into the tooth groove on the ratchet 24 under the action of the torsion spring 23, and the fixation is completed.

[0060] Then, the cover plate 16 is fixed to the mounting frame 10 by means of the bolts 20 and the sleeve 15;

[0061] Use the above method to fix the remaining wall panels 8 between the top panel 6 and the bottom panel 7;

[0062] When removal is required, the push rod 18 is inserted into the waist-shaped hole 17 and the push rod 18 is located below the pawl 22. The pawl 22 is then pushed upward to rotate on the second shaft 21, so that one end of the pawl 22 is away from the tooth groove outside the ratchet 24. At this time, the sliding rod 25 can move under the action of the spring 29, driving the rotating rod 27 away from the top plate 6 and the bottom plate 7, thereby releasing the fixation of the wall panel 8.

[0063] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A spliced ​​shielding room, comprising an electromagnetic shielding component, characterized in that: Also includes: A frame structure formed by a plurality of wall panels (8) and a door body (32); The top plate (6) and the bottom plate (7) are respectively connected to the wall plate (8) via fixing mechanisms; The inner sides of the wall panel (8), top panel (6) and bottom panel (7) are all fixedly connected to the electromagnetic shielding component via screws (14); Wherein, the fixing mechanism includes: Two sets of sliding rods (25) are slidably arranged on the top and bottom of the mounting frame (10), and the outer ends of the sliding rods (25) are provided with pivotable rotating rods (27); The driving assembly includes a winding roller (12) arranged through the first rotating shaft (11) and a pull rope (13) connected to the sliding rod (25), and the sliding rod (25) is driven to move by the winding pull rope (13) so that the rotating rod (27) locks the top plate (6) and the bottom plate (7).

2. The spliced ​​shielding room according to claim 1, characterized in that: The sliding rod (25) is slidably connected to the mounting frame (10) via a guide seat (30), and is sleeved with a spring (29) that provides a restoring elastic force; The top of the top plate (6) and the bottom plate (7) are both provided with a socket (9) for use with the rotating rod (27) to form a limit lock.

3. The spliced ​​shielding room according to claim 1, characterized in that: Also included is a braking mechanism, the braking mechanism comprising: a ratchet (24) fixed to the first rotating shaft (11); A pawl (22) pivotally connected to the mounting frame (10) via a second rotating shaft (21); A torsion spring (23) sleeved on the second rotating shaft (21) enables the pawl (22) to maintain an engaged state with the ratchet wheel (24).

4. The spliced ​​shielding room according to claim 3, characterized in that: The mounting frame (10) is provided with a detachable cover plate (16), and the cover plate (16) is provided with: A bolt (20) threadedly connected to the sleeve (15) of the mounting frame (10); The waist-shaped hole (17) is provided with a push rod (18) which can push the ratchet (22) to release the lock.

5. The spliced ​​shielding room according to any one of claims 1 to 4, characterized in that: The installation frame (10) of the wall panel (8) is a rectangular frame structure; The jacks (9) of the top plate (6) and the bottom plate (7) are arranged in a matrix; The rotation angle of the rotating rod (27) is 0-90°.

6. An electromagnetic shielding component, used in the spliced ​​shielding room according to claim 1, characterized in that: include: A plurality of shielding plates (1), each of the shielding plates (1) comprising two wooden boards (4) and a Permalloy shielding interlayer (5) sandwiched therebetween, the Permalloy shielding interlayer (5) having a thickness of 0.5-2 mm; One side of the shielding plate (1) is provided with a slot (2), and the other side is provided with an inserting strip (3) that plugs into and cooperates with the slot (2) of an adjacent shielding plate (1); a plurality of shielding plates (1) are seamlessly spliced ​​together to form electromagnetic shielding surfaces through the cooperation of the slot (2) and the inserting strip (3).

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