Anti-magnetic shielding box

Abstract

This invention relates to the field of magnetic shielding and discloses a magnetic shielding box. The magnetic shielding box includes: a box body, a shielding plate, a storage box, a lid, and a clamping mechanism. The box body has a circular inlet and outlet; the shielding plate is located inside the box body and is annular, with its inner ring wall having a corrugated structure; the storage box is located inside the shielding plate and fits snugly against its inner ring wall; the lid is circular and threadedly connected to the inlet and outlet; the clamping mechanism is located inside the box body and directly opposite the inlet and outlet, used to clamp the storage box onto the lid. The magnetic shielding box of this invention can enhance the shielding effect against magnetic fields, reduce operational intensity, and improve the reliability of the magnetic shielding box.

Description

Technical Field

[0001] This invention relates to the field of antimagnetic shielding technology, and in particular to an antimagnetic shielding box. Background Technology

[0002] As nuclear fusion energy research continues to advance towards high-temperature, high-confinement plasma experiments, the strong magnetic fields and stray magnetic fields generated by tokamak devices during operation are increasingly impacting the surrounding environment. These strong magnetic fields not only interfere with the normal operation of precision measuring instruments, electronic control systems, and auxiliary diagnostic equipment, leading to data acquisition distortion and decreased control accuracy, but may also pose a potential threat to the safe and stable operation of the device itself. Therefore, implementing effective magnetic protection in key areas surrounding the tokamak device has become a crucial technical aspect for ensuring experimental accuracy and equipment reliability.

[0003] Currently, most antimagnetic shielding boxes on the market adopt a single planar antimagnetic plate structure, which has several technical defects: First, the contact area between the planar antimagnetic plate and the storage cavity is limited, allowing magnetic fields to easily penetrate through the gaps, resulting in poor shielding effectiveness. Second, the sealing parts of the shielding box are mostly fixed structures, making it impossible to fine-tune them according to assembly errors or wear and tear, leading to significant magnetic field leakage at the gaps. Furthermore, while some high-end shielding boxes have attempted to optimize their antimagnetic structure, they have failed to form a synergistic protection system, either neglecting gap reinforcement or having a disconnect between adjustment and locking mechanisms, failing to balance shielding efficiency, ease of operation, and structural stability. Therefore, these problems make it difficult for existing shielding boxes to meet the stringent requirements of precision equipment for low-magnetic environments, hindering the application and development of equipment in related fields. Thus, there is an urgent need for an antimagnetic shielding technology solution that offers a tight fit, precise adjustment, convenient operation, and structural stability. Summary of the Invention

[0004] The present invention aims to at least solve one of the technical problems existing in the prior art. Therefore, one object of the present invention is to provide a magnetic shielding box that can reduce the risk of magnetic leakage during magnetic shielding, enhance the shielding effect against magnetic fields, and improve the reliability of the magnetic shielding box.

[0005] According to an embodiment of the present invention, an antimagnetic shielding box includes: a box body having a circular inlet and outlet; a shielding plate disposed within the box body and being annular, the inner ring wall of the shielding plate having a corrugated structure; a storage box disposed within the shielding plate and fitting against the inner ring wall of the shielding plate; a box lid being circular and threadedly connected to the inlet and outlet; and a pressing mechanism disposed within the box body and facing the inlet and outlet, for pressing the storage box onto the box lid.

[0006] According to an embodiment of the present invention, the inner ring wall of the shielding plate of the anti-magnetic shielding box has a corrugated structure, which allows the storage box to fit tightly against the inner ring wall of the shielding plate. This increases the contact area between the storage box and the shielding plate, increases the path for the magnetic field to enter the storage box, and increases the difficulty for the magnetic field to penetrate through the gap, thereby improving the shielding effect of the anti-magnetic shielding box. The clamping mechanism can be used to press the storage box tightly onto the lid, reducing the gap between the storage box and the lid, increasing the difficulty for the magnetic field to enter the storage box from the lid, further improving the shielding effect of the anti-magnetic shielding box, ensuring that the equipment inside the storage box is always in a stable low magnetic environment, guaranteeing the reliability of the equipment inside the storage box, and further guaranteeing the reliability of the anti-magnetic shielding box.

[0007] In some embodiments of the present invention, the corrugated structure of the inner ring wall is made of an elastic material and is elastically fitted to the storage box.

[0008] In some embodiments of the present invention, the shielding plate extends along a first direction, and the cross-sections of the shielding plate and the storage box perpendicular to the first direction are both rectangular.

[0009] In some embodiments of the present invention, the housing is provided with a shielding plate mounting cavity, which is connected to the inlet and outlet; the pressing mechanism includes a first slider, a second slider and a first elastic element, the first slider is disposed in the shielding plate mounting cavity, the end of the first slider away from the storage box is provided with a groove, the second slider is disposed in the groove, and the first elastic element is disposed between the first slider and the second slider.

[0010] In some embodiments of the present invention, the end of the slide away from the storage box is provided with a first protruding edge, the other end of the second slider near the storage box is provided with a second protruding edge, and the first elastic member is disposed between the first protruding edge and the second protruding edge.

[0011] In some embodiments of the present invention, the antimagnetic shielding box includes a shielding ring, and the box body is provided with a shielding plate mounting cavity and a shielding ring mounting cavity. The shielding plate mounting cavity and the shielding ring mounting cavity are both connected to the inlet and outlet. The shielding ring mounting cavity surrounds the shielding plate mounting cavity. The shielding plate is disposed in the shielding plate mounting cavity, and the shielding ring is disposed in the shielding ring mounting cavity.

[0012] In some embodiments of the present invention, the shielding ring includes an outer ring and an inner ring. The outer ring has an annular cavity within its ring wall and a plurality of first strip-shaped holes spaced apart circumferentially around the outer ring. The inner ring is disposed within the annular cavity and has a plurality of second strip-shaped holes spaced apart circumferentially around the inner ring. The antimagnetic shielding box includes a driving mechanism disposed on the box body for driving the inner ring to rotate within the annular cavity.

[0013] In some embodiments of the present invention, the annular cavity is open at one end near the inlet and outlet, the outer ring member is provided with a first arc-shaped hole at the other end away from the inlet and outlet, the housing is provided with a second arc-shaped hole corresponding to the position of the first arc-shaped hole, the inner ring member is provided with a drive post, the drive post passes through the first arc-shaped hole and the second arc-shaped hole, and the drive mechanism is located on the outside of the housing and drives the drive post.

[0014] In some embodiments of the present invention, the driving mechanism includes: a turntable rotatably mounted on the housing and connected to the driving column; a gear connected to the turntable; a rack meshing with the gear, with a sliding plate on the side of the rack away from the gear; a fixed base having a first sliding groove extending along the length of the rack and slidingly engaging with the sliding plate; a stud rotatably mounted on the fixed base and threadedly connected to the sliding plate; and a motor mounted on the fixed base and driving the stud.

[0015] In some embodiments of the present invention, the sidewalls of the inlet and outlet are provided with lock grooves; the box lid includes an outer shell, the outer shell having a circular cavity inside, the outer shell having a central circular hole at one end away from the storage box, and the circumferential sidewall of the outer shell having a third arc-shaped hole; a disc, the disc being rotatably disposed within the circular cavity, the circumferential sidewall of the disc having a second sliding groove extending radially along the disc; a handle, a portion of the handle passing through the central circular hole and connecting to the disc; a second elastic element, the second elastic element being disposed within the second sliding groove; and a locking block, the locking block being disposed within the second sliding groove and abutting against the second elastic element, and cooperating with the lock groove, the end of the locking block near the lock groove being arc-shaped.

[0016] In some embodiments of the present invention, the outer shell is provided with a fourth arc-shaped hole at the end away from the storage box, the handle includes a handle body, a rotating shaft and a connecting block, the rotating shaft and the connecting block are both connected to the handle body, the rotating shaft passes through the central circular hole and is connected to the disk, and the connecting block passes through the fourth arc-shaped hole and is connected to the disk.

[0017] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0019] Figure 1 Structural explosion of the antimagnetic shielding box provided in some embodiments of the present invention Figure 1 ;

[0020] Figure 2 Structural explosion of the antimagnetic shielding box provided in some embodiments of the present invention Figure 2 ;

[0021] Figure 3 This is a schematic diagram of the structure of the antimagnetic shielding box provided in some embodiments of the present invention;

[0022] Figure 4 Cross-sectional view of an antimagnetic shielding box provided in some embodiments of the present invention;

[0023] Figure 5 This is an exploded cross-sectional view of the structure of the antimagnetic shielding box provided in some embodiments of the present invention;

[0024] Figure 6 for Figure 4 A magnified view of a portion of point I;

[0025] Figure 7 The diagram shows the structure of the drive mechanism provided in some embodiments of the present invention.

[0026] Figure label:

[0027] 100. Anti-magnetic shielding box;

[0028] 10. Enclosure; 10a. Inlet / outlet; 10b. Shielding plate mounting cavity; 10c. Shielding ring mounting cavity; 10d. Second arc-shaped hole; 10e. Locking groove;

[0029] 20. Shielding plate;

[0030] 30. Storage box;

[0031] 40. Box lid; 41. Outer shell; 41a. Circular cavity; 41b. Central circular hole; 41c. Third arc-shaped hole; 41d. Fourth arc-shaped hole; 42. Disc; 42a. Second slide groove; 43. Handle; 431. Handle body; 432. Rotating shaft; 433. Connecting block; 44. Locking block; 45. Second elastic element;

[0032] 50. Clamping mechanism; 51. First slider; 51a. Slide groove; 511. First protruding edge; 52. Second slider; 521. Second protruding edge; 53. First elastic element;

[0033] 60. Shielding ring; 61. Outer ring component; 61a. Annular cavity; 61b. First strip hole; 61c. First arc-shaped hole; 62. Inner ring component; 62a. Second strip hole; 621. Drive post;

[0034] 70. Drive mechanism; 71. Turntable; 72. Gear; 73. Rack; 731. Slide plate; 74. Fixing base; 74a. First slide groove; 75. Stud; 76. Motor. Detailed Implementation

[0035] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0036] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0037] Furthermore, features specified as "first" or "second" may explicitly or implicitly include one or more of the same feature, used to distinguish and describe features, without any order or distinction of importance.

[0038] In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0039] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0040] The following is for reference. Figures 1-7 This describes the antimagnetic shielding box 100 according to an embodiment of the present invention.

[0041] like Figures 1 to 4 As shown, the antimagnetic shielding box 100 of this embodiment includes: a box body 10, a shielding plate 20, a storage box 30, a box cover 40, and a pressing mechanism 50. The box body 10 has a circular inlet and outlet 10a; the shielding plate 20 is disposed inside the box body 10 and is annular, with the inner ring wall of the shielding plate 20 having a corrugated structure; the storage box 30 is disposed inside the shielding plate 20 and fits against the inner ring wall of the shielding plate 20; the box cover 40 is circular and is threadedly connected to the inlet and outlet 10a; the pressing mechanism 50 is disposed inside the box body 10 and directly opposite the inlet and outlet 10a, and is used to press the storage box 30 onto the box cover 40.

[0042] The box 10 can refer to a component that provides a sealed space for the storage box 30 and the shielding plate 20. The box 10 has a circular inlet and outlet 10a. The storage box 30 and the shielding plate 20 and other components enter and exit the box 10 through the inlet and outlet 10a. The shape of the box 10 can be, but is not limited to, a cylinder, a cuboid, an irregular shape, etc.

[0043] The shielding plate 20 can refer to a component that can shield a magnetic field, and is made of a material with high magnetic permeability. The shielding plate 20 is located inside the housing 10 and is in the shape of a ring, thereby forming a shielding shell as a whole. The inner ring wall of the shielding plate 20 also has a corrugated structure.

[0044] The storage box 30 can refer to a component for placing precision measuring instruments, electronic control systems, and auxiliary diagnostic equipment. The inner ring wall of the shielding plate 20 and the storage box 30 have the same shape and match in size, so that the storage box 30 fits snugly against the inner ring wall of the shielding plate 20. The shapes of the shielding plate 20 and the storage box 30 can be, but are not limited to, cylinders, cuboids, and irregular shapes, etc. For example, refer to... Figure 4 The shielding plate 20 and the storage box 30 are rectangular in shape.

[0045] The cover 40 can refer to the component that seals the inlet and outlet 10a. The cover 40 is circular and is threadedly connected to the inlet and outlet 10a, which facilitates the opening and closing of the cover 40 and the inlet and outlet 10a, thereby facilitating the placement and removal of devices such as precision measuring instruments, electronic control systems and auxiliary diagnostic equipment.

[0046] The pressing mechanism 50 can refer to the component that presses the storage box 30. The pressing mechanism 50 is located inside the box body 10 and is directly opposite the inlet and outlet 10a. It presses the storage box 30 onto the box cover 40 along the axial direction of the inlet and outlet 10a, thereby reducing the gap between the storage box 30 and the box cover 40.

[0047] In the above technical solution, the component to be shielded is placed inside the storage box 30, and then the storage box 30 is inserted into the housing 10 along the inlet / outlet 10a. Next, the lid 40 is screwed tightly into the inlet / outlet 10a, sealing the housing 10. Because the lid 40 and the inlet / outlet 10a are connected by threads, the tightness of the connection is ensured, reducing the risk of large gaps between the lid 40 and the inlet / outlet 10a, and lowering the probability of magnetic field leakage. Secondly, the clamping mechanism 50 acts on the storage box 30, firmly pressing it against the lid 40, which also reduces or eliminates gaps between the lid 40 and the inlet / outlet 10a, further reducing the probability of magnetic field leakage. The corrugated structure of the inner ring wall of the shielding plate 20 fits tightly against the storage box 30, preventing gaps between them, thereby reducing the magnetic circuit and effectively blocking external magnetic fields from intruding into the storage box 30 from the side wall. This corrugated structure allows magnetic field lines to continuously change direction, increasing the magnetic circuit length and reducing the magnetic flux entering the enclosure 10, thereby weakening the magnetic field's penetration ability and providing basic and robust anti-magnetic protection for the components to be shielded. Simultaneously, when the external magnetic field is strong, the corrugated structure of the shielding plate 20 can also disperse the magnetic flux density, allowing the flux to be split among the peaks and troughs of multiple corrugations, which can increase the effective saturation threshold and thus improve the shielding effect.

[0048] According to an embodiment of the present invention, the inner ring wall of the shielding plate 20 of the antimagnetic shielding box 100 has a corrugated structure, which makes the storage box 30 fit tightly against the inner ring wall of the shielding plate 20. This increases the contact area between the storage box 30 and the shielding plate 20, and also increases the path for the magnetic field to enter the storage box 30, making it more difficult for the magnetic field to penetrate through the gap. This improves the shielding effect of the antimagnetic shielding box 100. The pressing mechanism 50 can be used to press the storage box 30 against the box cover 40, reducing the gap between the storage box 30 and the box cover 40, making it more difficult for the magnetic field to enter the storage box 30 from the box cover 40, further improving the shielding effect of the antimagnetic shielding box 100, ensuring that the equipment inside the storage box 30 is always in a stable low magnetic environment, guaranteeing the reliability of the equipment inside the storage box 30, and further ensuring the reliability of the antimagnetic shielding box 100.

[0049] In some embodiments of the present invention, reference is made to Figure 4 The corrugated structure of the inner ring wall is made of elastic material and fits snugly against the storage box 30. The material of the inner ring wall can be, but is not limited to, elastic plastic, elastic composite material, elastic metal, etc.

[0050] In the above technical solution, the corrugated structure of the inner ring wall is made of elastic material. When the storage box 30 is placed inside the shielding plate 20, the inner ring wall and the storage box 30 undergo elastic deformation under compression, so that the inner ring wall and the storage box 30 form a tighter elastic anti-blocking fit, further reducing or eliminating the gap between the storage box 30 and the inner ring wall, enhancing the blocking ability of the magnetic field, improving the shielding effect of the shielding plate 20, and further improving the reliability of the shielding plate 20.

[0051] In some embodiments of the present invention, reference is made to Figure 1 , Figure 2 and Figure 5 The shielding plate 20 extends and elongates along the first direction, and the cross-sections of the shielding plate 20 and the storage box 30 perpendicular to the first direction are both rectangular.

[0052] The "first direction" can be referenced. Figure 1 The front and rear directions. In the above technical solution, the cross-sections of the shielding plate 20 and the storage box 30 perpendicular to the first direction are both rectangular, which can position the storage box 30, facilitate the installation of the storage box 30, and also provide a larger storage space for the equipment inside the storage box 30, making it convenient to store precision electronic components, testing instruments and other equipment of different sizes and shapes, and improving the convenience of the anti-magnetic shielding box 100.

[0053] In some embodiments of the present invention, reference is made to Figure 4 and Figure 5 The housing 10 has a shielding plate mounting cavity 10b inside, which is connected to the inlet and outlet 10a. The pressing mechanism 50 includes a first slider 51, a second slider 52 and a first elastic element 53. The first slider 51 is located in the shielding plate mounting cavity 10b. The end of the first slider 51 away from the storage box 30 is provided with a groove 51a. The second slider 52 is located in the groove 51a. The first elastic element 53 is located between the first slider 51 and the second slider 52.

[0054] The first elastic element 53 can be, but is not limited to, a spring, a sheet, an elastic rubber block, etc. For example, refer to... Figure 3 The first elastic element 53 is a spring.

[0055] In the above technical solution, as the lid 40 continuously rotates into the inlet / outlet 10a, the lid 40 pushes the storage box 30 to press against the first slider 51, compressing the first slider 51 and the second slider 52, reducing the axial dimension of the inlet / outlet 10a of the groove 51a, and thus compressing the first elastic element 53. The elastic force of the first elastic element 53 acts on the first slider 51 and the second slider 52, thereby causing the first slider 51 to press against the storage box 30, and thus pressing the storage box 30 against the lid 40. This achieves the pressing mechanism 50 and the lid 40 at both ends of the storage box 30, preventing magnetic field leakage at the gaps and improving the reliability of the anti-magnetic shielding box 100. The pressing mechanism 50 adopts the above solution, which has a simple structure, is easy to implement, and can also ensure the reliability of pressing against the lid 40.

[0056] In some embodiments of the present invention, reference is made to Figure 6 The slide groove 51a has a first protruding edge 511 at one end away from the storage box 30, and the second slider 52 has a second protruding edge 521 at the other end near the storage box 30. The first elastic member 53 is located between the first protruding edge 511 and the second protruding edge 521.

[0057] The first convex edge 511 and the second convex edge 521 can be, but are not limited to, annular convex edges, or multiple convex edges spaced apart along the circumference.

[0058] In the above technical solution, the first protruding edge 511 and the second protruding edge 521 can axially limit the first elastic element 53, fixing the first elastic element 53 in the slide groove 51a and preventing it from falling out of the slide groove 51a during compression or rebound, thus ensuring the structural stability and reliability of the pressing mechanism 50. Using the above structure, the first slider 51, the second slider 52, and the first elastic element 53 can also be assembled and installed integrally in the housing 10, facilitating the assembly or disassembly of the pressing mechanism 50 within the anti-magnetic shielding box 100.

[0059] In some embodiments of the present invention, reference is made to Figure 1 , Figure 2 , Figure 4 and Figure 5 The antimagnetic shielding box 100 includes a shielding ring 60. The box body 10 has a shielding plate mounting cavity 10b and a shielding ring mounting cavity 10c. Both the shielding plate mounting cavity 10b and the shielding ring mounting cavity 10c are connected to the inlet and outlet 10a. The shielding ring mounting cavity 10c surrounds the shielding plate mounting cavity 10b. The shielding plate 20 is located in the shielding plate mounting cavity 10b, and the shielding ring 60 is located in the shielding ring mounting cavity 10c.

[0060] In the above technical solution, the design of shielding ring 60 in conjunction with shielding plate 20 can form a double-shielded magnetic field. This dual-layer defense not only comprehensively blocks the entire magnetic field but also eliminates the risk of magnetic leakage through gaps, enhancing the antimagnetic shielding box 100's effectiveness. This ensures that the equipment inside storage box 30 remains in a stable, low-magnetic environment, improving the reliability of the antimagnetic shielding box 100. It is suitable for storing and using precision electronic components, testing instruments, and other equipment highly sensitive to magnetic fields. Both the shielding plate mounting cavity 10b and the shielding ring mounting cavity 10c are connected to the inlet and outlet 10a, facilitating the installation of the shielding ring 60 and shielding plate 20 and improving the assembly efficiency of the antimagnetic shielding box 100. The box wall structure between the shielding plate mounting cavity 10b and the shielding ring mounting cavity 10c also serves to block the magnetic field, further enhancing the antimagnetic shielding effect.

[0061] In some embodiments of the present invention, reference is made to Figure 1 , Figure 2 , Figure 4 and Figure 5 The shielding ring 60 includes an outer ring 61 and an inner ring 62. The outer ring 61 has an annular cavity 61a inside its ring wall and a plurality of first strip holes 61b. The plurality of first strip holes 61b are spaced apart around the circumference of the outer ring 61. The inner ring 62 is located inside the annular cavity 61a and has a plurality of second strip holes 62a in its ring wall. The plurality of second strip holes 62a are spaced apart around the circumference of the inner ring 62. The antimagnetic shielding box 100 includes a driving mechanism 70, which is located on the box body 10 and is used to drive the inner ring 62 to rotate inside the annular cavity 61a.

[0062] The number of the first strip hole 61b can be, but is not limited to, two, three, four, five, etc.

[0063] The number of the second strip hole 62a can be, but is not limited to, two, three, four, five, etc.

[0064] In the above technical solution, the driving mechanism 70 drives the inner ring 62 to rotate within the annular cavity 61a, causing the first strip hole 61b to rotate in the axial direction of the shielding ring 60. This can increase or decrease the overlapping area of ​​the first strip hole 61b and the second strip hole 62a, or make the first strip hole 61b and the second strip hole 62a staggered. This allows adjustment of the shielding effect of the shielding ring 60, thereby flexibly adjusting the shielding effect of the antimagnetic shielding box 100 to meet the magnetic field strength required by different equipment and improve the versatility of the antimagnetic shielding box 100.

[0065] For example, for components requiring high magnetic shielding, the inner ring 62 rotates within the annular cavity 61a until the first strip-shaped hole 61b and the second strip-shaped hole 62a are completely misaligned. This prevents the magnetic field from passing through the inner ring 62 and the shielding ring 60 formed by the inner ring 62. In this case, the shielding ring 60, in conjunction with the shielding plate 20, provides a higher level of magnetic shielding. For components requiring lower magnetic shielding but needing to allow a certain amount of magnetic field to pass through, the driving mechanism 70 can drive the inner ring 62 to rotate within the annular cavity 61a, adjusting the overlapping area between the first strip-shaped hole 61b and the second strip-shaped hole 62a, thereby allowing a certain amount of magnetic field to pass through the overlapping area of ​​the first strip-shaped hole 61b and the second strip-shaped hole 62a.

[0066] In some embodiments of the present invention, reference is made to Figure 1 , Figure 4 and Figure 5 The annular cavity 61a is open at one end near the inlet / outlet 10a. The outer ring 61 is provided with a first arc-shaped hole 61c at the other end away from the inlet / outlet 10a. The housing 10 is provided with a second arc-shaped hole 10d at the position corresponding to the first arc-shaped hole 61c. The inner ring 62 is provided with a drive post 621, which passes through the first arc-shaped hole 61c and the second arc-shaped hole 10d. The drive mechanism 70 is located on the outside of the housing 10 and drives the drive post 621.

[0067] In the above technical solution, the driving mechanism 70 can rotate the inner ring 62 relative to the outer ring 61 by driving the driving column 621 to rotate within the first arc-shaped hole 61c and the second arc-shaped hole 10d, thereby adjusting the shielding effect of the shielding ring 60. The adjustment method is simple and improves the reliability of the driving mechanism 70 and the shielding ring 60.

[0068] In some embodiments of the present invention, reference is made to Figure 1 and Figure 7 The drive mechanism 70 includes a turntable 71, a gear 72, a rack 73, a fixed base 74, a stud 75, and a motor 76. The turntable 71 is rotatably mounted on the housing 10 and connected to the drive column 621. The gear 72 is connected to the turntable 71. The rack 73 meshes with the gear 72, and a sliding plate 731 is provided on the side of the rack 73 away from the gear 72. The fixed base 74 is provided with a first sliding groove 74a, which extends along the length of the rack 73 and slides in cooperation with the sliding plate 731. The stud 75 is rotatably mounted on the fixed base 74 and threadedly connected to the sliding plate 731. The motor 76 is mounted on the fixed base 74 and drives the connecting stud 75.

[0069] In the above technical solution, the motor 76 can drive the stud 75 to rotate on the fixed base 74. Since the stud 75 is threadedly connected to the slide plate 731, and the slide plate 731 slides on the fixed base 74 through the first slide groove 74a, the slide plate 731 slides on the first slide groove 74a. This causes the rack 73 to drive the gear 72 to rotate, realizing the rotation of the inner ring 62 relative to the outer ring 61, thereby adjusting the shielding effect of the shielding ring 60. Through the coordinated rotation of the gear 72 and the rack 73, the rotation angle of the inner ring 62 can be precisely controlled, achieving precise adjustment of the overlapping area of ​​the first strip hole 61b and the second strip hole 62a. This allows for precise adjustment of the antimagnetic shielding effect of the shielding ring 60, making it particularly suitable for scenarios requiring frequent adjustment of the shielding state and saving operation time.

[0070] In some embodiments of the present invention, reference is made to Figure 1 , Figure 2 , Figure 4 and Figure 5 The side wall of the inlet / outlet 10a is provided with a locking groove 10e. The lid 40 includes an outer shell 41, a disc 42, a handle 43, a locking block 44, and a second elastic member 45. The outer shell 41 is provided with a circular cavity 41a. The end of the outer shell 41 away from the storage box 30 is provided with a central circular hole 41b. The circumferential side wall of the outer shell 41 is provided with a third arc-shaped hole 41c. The disc 42 is rotatably disposed in the circular cavity 41a. The circumferential side wall of the disc 42 is provided with a second sliding groove 42a, which extends radially along the disc 42. A portion of the handle 43 passes through the central circular hole 41b and connects to the disc 42. The second elastic member 45 is disposed in the second sliding groove 42a. The locking block 44 is disposed in the second sliding groove 42a and abuts against the second elastic member 45, and cooperates with the locking groove 10e. The end of the locking block 44 near the locking groove 10e is arc-shaped.

[0071] Understandably, the end of the locking block 44 furthest from the second elastic element 45 protrudes from the second slide groove 42a and the third arc-shaped hole 41c under normal conditions.

[0072] In the above technical solution, the locking block 44 can slide radially along the disk 42 within the second sliding groove 42a. When it is necessary to close the box 10, the box cover 40 is aligned with the inlet / outlet 10a and screwed in. The arc-shaped end of the locking block 44 contacts and is compressed against the side wall of the inlet / outlet 10a. The locking block 44 compresses the second elastic element 45 and slides towards the center of the disk 42, allowing the box cover 40 to be screwed in smoothly. When the box cover 40 is screwed to the position where the locking block 44 corresponds to the locking groove 10e, the second elastic element 45 releases its elastic potential energy, pushing the arc-shaped end of the locking block 44 into the locking groove 10e, thereby locking the box cover 40 and the box 10. This prevents the box cover 40 from accidentally loosening under non-human operation, ensuring the sealing of the antimagnetic shielding box 100 after the box cover 40 is closed, and thus ensuring the stability of the shielding effect of the antimagnetic shielding box 100. When the case 10 needs to be opened, the handle 43 is turned to rotate the disc 42. Since the end of the locking block 44 near the locking groove 10e is arc-shaped, the arc part of the locking block 44 is located in the locking groove 10e when it is locked. Therefore, when the arc part of the locking block 44 is subjected to a large force, the locking block 44 can slide in the second slide groove 42a. The locking block 44 overcomes the elastic force of the second elastic element 45 and slides towards the center of the disc 42, disengaging from the locking groove 10e, so that the case cover 40 can be unscrewed, ensuring the smoothness and reliability of the opening and closing process of the case cover 40.

[0073] In some embodiments of the present invention, reference is made to Figure 2 The outer shell 41 is also provided with a fourth arc-shaped hole 41d at the end away from the storage box 30. The handle 43 includes a handle body 431, a rotating shaft 432 and a connecting block 433. The rotating shaft 432 and the connecting block 433 are both connected to the handle body 431. The rotating shaft 432 passes through the central circular hole 41b and is connected to the disc 42. The connecting block 433 passes through the fourth arc-shaped hole 41d and is connected to the disc 42.

[0074] In the above technical solution, the connecting block 433 passes through the fourth arc-shaped hole 41d and connects to the disc 42, so that when the handle 43 drives the disc 42 to rotate, the connecting block 433 can move along the trajectory of the fourth arc-shaped hole 41d. The fourth arc-shaped hole 41d can limit the rotation range of the connecting block 433, thereby limiting the rotation angle of the disc 42. The locking block 44 and the locking groove 10e are engaged at a smaller rotation angle of the disc 42, reducing the intensity of operation and improving the efficiency of operation.

[0075] The following is combined Figures 1 to 7 This describes a specific embodiment of the antimagnetic shielding box 100 of the present invention.

[0076] The antimagnetic shielding box 100 of the present invention includes: a box body 10, a shielding plate 20, a storage box 30, a box cover 40, a pressing mechanism 50, a shielding ring 60, and a driving mechanism 70.

[0077] The housing 10 has a circular inlet / outlet 10a, a shielding plate mounting cavity 10b, and a shielding ring mounting cavity 10c. The side wall of the inlet / outlet 10a has a locking groove 10e. The shielding plate mounting cavity 10b and the shielding ring mounting cavity 10c are both connected to the inlet / outlet 10a. The shielding ring mounting cavity 10c is arranged around the shielding plate mounting cavity 10b. The shielding plate 20 is located in the shielding plate mounting cavity 10b, and the shielding ring 60 is located in the shielding ring mounting cavity 10c.

[0078] The shielding plate 20 is disposed inside the housing 10 and is annular. The shielding plate 20 extends and elongates along the first direction. The cross-sections of the shielding plate 20 and the storage box 30 perpendicular to the first direction are both rectangular. The inner ring wall of the shielding plate 20 has a corrugated structure. The corrugated structure of the inner ring wall is made of elastic material and elastically abuts against the storage box 30.

[0079] The storage box 30 is located inside the shielding plate 20 and is in contact with the inner ring wall of the shielding plate 20.

[0080] The lid 40 includes an outer shell 41, a disc 42, a handle 43, a locking block 44, and a second elastic element 45. The outer shell 41 has a circular cavity 41a, a central circular hole 41b at the end of the outer shell 41 away from the storage box 30, a third arc-shaped hole 41c on the circumferential sidewall of the outer shell 41, and a fourth arc-shaped hole 41d at the end of the outer shell 41 away from the storage box 30. The disc 42 is rotatably disposed within the circular cavity 41a, and a second sliding groove 42a is provided on the circumferential sidewall of the disc 42, extending radially along the disc 42. The handle 43 includes a handle body 431, a pivot 432, and a connecting block 433. Both the pivot 432 and the connecting block 433 are connected to the handle body 431. The pivot 432 passes through the central circular hole 41b and connects to the disc 42, while the connecting block 433 passes through the fourth arc-shaped hole 41d and connects to the disc 42. The second elastic element 45 is disposed within the second slide groove 42a. The locking block 44 is disposed within the second slide groove 42a and abuts against the second elastic element 45, and cooperates with the locking groove 10e. The end of the locking block 44 near the locking groove 10e is arc-shaped.

[0081] The clamping mechanism 50 includes a first slider 51, a second slider 52, and a first elastic element 53. The first slider 51 is disposed within the shielding plate mounting cavity 10b. A groove 51a is provided at the end of the first slider 51 furthest from the storage box 30. The second slider 52 is disposed within the groove 51a. The first elastic element 53 is disposed between the first slider 51 and the second slider 52. A first protruding edge 511 is provided at the end of the groove 51a furthest from the storage box 30. A second protruding edge 521 is provided at the other end of the second slider 52 closest to the storage box 30. The first elastic element 53 is disposed between the first protruding edge 511 and the second protruding edge 521.

[0082] The shielding ring 60 includes an outer ring 61 and an inner ring 62. The outer ring 61 has an annular cavity 61a within its ring wall and a plurality of first strip-shaped holes 61b spaced apart circumferentially around the outer ring 61. The inner ring 62 is located within the annular cavity 61a and has a plurality of second strip-shaped holes 62a spaced apart circumferentially around the inner ring 62. The annular cavity 61a is open at one end near the inlet / outlet 10a, and the outer ring 61 has a first arc-shaped hole 61c at the other end away from the inlet / outlet 10a. The housing 10 has a second arc-shaped hole 10d corresponding to the position of the first arc-shaped hole 61c. The inner ring 62 has a drive post 621 that passes through the first arc-shaped hole 61c and the second arc-shaped hole 10d. The drive mechanism 70 is located on the outside of the housing 10 and drives the drive post 621.

[0083] The drive mechanism 70 includes a turntable 71, a gear 72, a rack 73, a fixed base 74, a stud 75, and a motor 76. The turntable 71 is rotatably mounted on the housing 10 and connected to a drive column 621. The gear 72 is connected to the turntable 71. The rack 73 meshes with the gear 72, and a sliding plate 731 is provided on the side of the rack 73 away from the gear 72. The fixed base 74 has a first sliding groove 74a, which extends along the length of the rack 73 and slides in engagement with the sliding plate 731. The stud 75 is rotatably mounted on the fixed base 74 and threadedly connected to the sliding plate 731. The motor 76 is mounted on the fixed base 74 and drives the connecting stud 75.

[0084] In the description of this specification, references to terms such as "some embodiments," "optionally," "furthermore," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0085] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A magnetic shielding box, characterized in that, include: The enclosure has a circular inlet and outlet; A shielding plate, which is disposed inside the box and is ring-shaped, wherein the inner ring wall of the shielding plate has a corrugated structure; A storage box, wherein the storage box is disposed inside the shielding plate and is in contact with the inner ring wall of the shielding plate; A box cover, which is circular and threadedly connected to the inlet and outlet; A pressing mechanism is provided inside the box and directly opposite the inlet / outlet, used to press the storage box onto the box lid; The shielding ring includes a shielding plate mounting cavity and a shielding ring mounting cavity within the housing. Both the shielding plate mounting cavity and the shielding ring mounting cavity are connected to the inlet and outlet. The shielding ring mounting cavity surrounds the shielding plate mounting cavity. The shielding plate and the shielding ring are disposed within the shielding plate mounting cavity. The shielding ring includes an outer ring component and an inner ring component. The outer ring component has an annular cavity within its ring wall and a plurality of first strip-shaped holes spaced apart circumferentially along the outer ring component. The inner ring component is disposed within the annular cavity and has a plurality of second strip-shaped holes spaced apart circumferentially around the inner ring component. The antimagnetic shielding box includes a driving mechanism mounted on the housing for driving the inner ring component to rotate within the annular cavity.

2. The antimagnetic shielding box according to claim 1, characterized in that, The corrugated structure of the inner ring wall is made of an elastic material and fits elastically against the storage box.

3. The antimagnetic shielding box according to claim 2, characterized in that, The shielding plate extends along the first direction, and both the shielding plate and the storage box have rectangular cross-sections perpendicular to the first direction.

4. The antimagnetic shielding box according to claim 1, characterized in that, The box body is provided with a shielding plate mounting cavity, which is connected to the inlet and outlet; the pressing mechanism includes a first slider, a second slider and a first elastic element, the first slider is disposed in the shielding plate mounting cavity, the end of the first slider away from the storage box is provided with a sliding groove, the second slider is disposed in the sliding groove, and the first elastic element is disposed between the first slider and the second slider.

5. The antimagnetic shielding box according to claim 4, characterized in that, The slide groove has a first protruding edge at one end away from the storage box, and the second slider has a second protruding edge at the other end near the storage box. The first elastic element is located between the first protruding edge and the second protruding edge.

6. The antimagnetic shielding box according to claim 1, characterized in that, The annular cavity is open at one end near the inlet and outlet, and the outer ring component is provided with a first arc-shaped hole at the other end away from the inlet and outlet. The housing is provided with a second arc-shaped hole at the position corresponding to the first arc-shaped hole. The inner ring component is provided with a drive column, which passes through the first arc-shaped hole and the second arc-shaped hole. The drive mechanism is located on the outside of the housing and drives the drive column.

7. The antimagnetic shielding box according to claim 6, characterized in that, The driving mechanism includes: a turntable rotatably mounted on the housing and connected to the drive column; a gear connected to the turntable; a rack meshing with the gear, with a sliding plate on the side of the rack away from the gear; a fixed base with a first sliding groove extending along the length of the rack and slidingly engaging with the sliding plate; a stud rotatably mounted on the fixed base and threadedly connected to the sliding plate; and a motor mounted on the fixed base and driving the stud.

8. The antimagnetic shielding box according to claim 1, characterized in that, The sidewalls of the inlet and outlet are provided with lock grooves. The box lid includes an outer shell with a circular cavity inside. The end of the outer shell away from the storage box has a central circular hole, and the circumferential sidewall of the outer shell has a third arc-shaped hole. A disc is rotatably disposed in the circular cavity. The circumferential sidewall of the disc has a second sliding groove that extends radially along the disc. A handle is partially inserted through the central circular hole and connected to the disc. A second elastic element is disposed in the second sliding groove. A locking block is disposed in the second sliding groove and abuts against the second elastic element, and cooperates with the lock groove. The end of the locking block near the lock groove is arc-shaped.

9. The antimagnetic shielding box according to claim 8, characterized in that, The outer shell is provided with a fourth arc-shaped hole at the end away from the storage box. The handle includes a handle body, a pivot and a connecting block. The pivot and the connecting block are both connected to the handle body. The pivot passes through the central circular hole and is connected to the disc. The connecting block passes through the fourth arc-shaped hole and is connected to the disc.

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