Shielding door frame and shielding method of a corner connection mechanism

Abstract

The application discloses a shielding door frame and shielding method of a corner connecting mechanism and belongs to the technical field of electromagnetic shielding. In order to solve the problem of existing gaps in the corner connecting part of the door frame and the problem of the decline of shielding performance, the application comprises an inner door frame structure and an outer door frame structure. The inner door frame structure comprises a plurality of inner door frame sections and a plurality of inner corners. The inner door frame section is provided with a first characteristic groove, and the inner corner is provided with a first arc-shaped transition groove matched with the first characteristic groove. The two are connected to form a continuous closed annular groove for mounting a sealing strip. The outer door frame structure comprises a plurality of outer door frame sections and a plurality of outer corners. The outer door frame section is provided with a second characteristic groove, and the outer corner is provided with a second arc-shaped transition groove matched with the second characteristic groove. The two are connected to form a continuous closed annular groove for mounting a conductive silicon core wire mesh strip. The application eliminates the gap at the corner through the cooperation of the characteristic groove and the arc-shaped transition groove, guarantees the continuity of the shielding element, and significantly improves the high-frequency shielding performance and structural rigidity of the door frame.

Description

Technical Field

[0001] This invention relates to the field of electromagnetic shielding technology, specifically to a shielding door and its frame structure for an electronically shielded shelter. In particular, by improving the continuity at the corners of the door frame, a corner connection mechanism for the shielding door frame and a corresponding shielding method are designed to enhance the overall shielding effectiveness of the shelter. Background Technology

[0002] In fields such as electronics, medical equipment, and national defense, electromagnetic shielding enclosures are crucial for ensuring normal equipment operation, preventing information leakage, and resisting external interference. As the only large opening within the shielding structure that requires frequent movement, the performance of the shielding door directly determines the shortcomings of the overall shielding performance.

[0003] Currently, common shielded door frame structures are typically constructed from metal profiles with good electrical conductivity (such as steel plates, galvanized steel plates, copper alloys, or aluminum profiles). The four corners of the door frame are usually connected by welding, bolts, or corner fittings. These traditional connection methods have the following inherent drawbacks in practical engineering applications.

[0004] 1. Electrical connection discontinuity and gap leakage: Although welding provides better electrical continuity, it is difficult to construct on site. The weldable area inside the door frame is limited, and thermal deformation during welding is difficult to control. Bolt or corner fitting connections will have micro-gaps and oxide layers between the contact surfaces, forming nonlinear contact resistance.

[0005] 2. Stress Concentration and Structural Deformation: The weight of the door leaf and frequent opening and closing will generate significant alternating stress and torsional moment at the corners of the door frame. Rigid welded connections may lead to stress concentration, while ordinary corner fittings with insufficient rigidity are prone to structural deformation. Once deformed, the compression of the conductive silicon core mesh strip and sealing strip between the door leaf and the door frame will become uneven, further creating leakage gaps.

[0006] 3. Complex installation and debugging, poor fault tolerance: Traditional connection methods require extremely high precision in processing and installation. Even slight misalignment or angular deviation at corner connections can cause the flatness and parallelism of the entire door frame to exceed tolerances, making the door difficult to adjust and even requiring forceful on-site correction, which is time-consuming and labor-intensive. Summary of the Invention

[0007] The purpose of this invention is to overcome the shortcomings of the prior art and provide a shielding door frame and shielding method for a corner connection mechanism, so as to solve the problems of insufficient continuity at the corner connection of the door frame in the prior art, resulting in gap leakage, which leads to a decrease in shielding and sealing performance and a reduction in structural reliability.

[0008] To achieve the above objectives, the present invention adopts the following technical solution: In a first aspect, the present invention provides a shielding door frame for a corner connection mechanism, comprising: an inner door frame frame and an outer door frame frame; The inner door frame includes multiple inner door frame profiles and multiple inner corners, and two adjacent inner door frame profiles are connected through the inner corners. The inner door frame profile is provided with at least one first feature groove along its length direction; the inner corner is provided with a first arc-shaped transition groove that matches the shape of the first feature groove; when the inner door frame profile is connected to the inner corner, the first feature groove and the first arc-shaped transition groove are connected to form a continuous closed annular channel for installing the first annular sealing element. The outer door frame includes multiple outer door frame profiles and multiple outer corners, and two adjacent outer door frame profiles are connected through the outer corners; The outer door frame profile is provided with at least one second feature groove along its length direction; the outer corner is provided with a second arc-shaped transition groove that matches the shape of the second feature groove; when the outer door frame profile is connected to the outer corner, the second feature groove and the second arc-shaped transition groove are connected to form a continuous closed annular channel for installing the second annular shielding element.

[0009] As a preferred technical solution of this application, the inner door frame profile includes a first stop bar, a second stop bar, and a third stop bar arranged sequentially from the outside to the inside, as well as a first profile body; the first feature groove is formed between the first stop bar and the second stop bar for installing a sealing strip; the first profile body is a hollow rectangular frame structure, and its side is provided with a slot for installing a buried iron.

[0010] As a preferred technical solution of this application, the inner corner is a 1 / 4 disc structure, on which a first arc-shaped stop bar, a second arc-shaped stop bar, a third arc-shaped stop bar and an arc-shaped solid connecting block are provided, which are correspondingly connected to the first stop bar, the second stop bar, the third stop bar and the first profile body; the first arc-shaped transition groove is formed between the first arc-shaped stop bar and the second arc-shaped stop bar.

[0011] As a preferred technical solution of this application, the outer door frame profile includes a first partition, a second partition, and a third partition arranged sequentially from the outside to the inside, as well as a second profile body; a first sub-feature groove is formed between the first partition and the second partition for installing a second conductive silicon core wire mesh strip; a second sub-feature groove is formed between the second partition and the third partition for installing a first conductive silicon core wire mesh strip; the first sub-feature groove and the second sub-feature groove together constitute the second feature groove.

[0012] As a preferred technical solution of this application, the outer corner is a rectangular block structure, and its interior is provided with a first arc-shaped partition, a second arc-shaped partition, and a third arc-shaped partition that match the shapes of the first partition, the second partition, and the third partition; arc-shaped transition grooves corresponding to the first sub-feature groove and the second sub-feature groove are formed between the first arc-shaped partition and the second arc-shaped partition, and between the second arc-shaped partition and the third arc-shaped partition, respectively.

[0013] As a preferred technical solution of this application, when the inner door frame and the outer door frame are engaged, the third stop bar on the inner door frame profile extends into the first sub-feature groove of the outer door frame profile to press the conductive silicon core wire mesh strip II.

[0014] As a preferred technical solution of this application, the second stop bar on the inner door frame profile extends into the second sub-feature groove of the outer door frame profile to press the conductive silicon core wire mesh strip, and the third partition on the outer door frame profile extends into the first feature groove of the inner door frame profile to press the sealing strip.

[0015] As a preferred technical solution of this application, the outer door frame includes an outer door frame profile one located on the left and right sides and the bottom, and an outer door frame profile two located at the top; the outer door frame profile two has a third profile body with a U-shaped groove structure, and a flat sealing plate is provided on its exterior.

[0016] As a preferred technical solution of this application, the inner door frame further includes an L-shaped reinforcing rib, which is welded between two vertically arranged inner door frame profiles.

[0017] Secondly, the present invention provides a shielding method for a corner connection mechanism shielding door frame, applied to the shielding door frame of any of the corner connection mechanisms described above, comprising the following steps: S1: Design an embedded iron to match the structure of the inner door frame profile and fix it in the slot of the inner door frame profile; S2: Design a matching first arc transition groove for the inner corner based on the first characteristic groove of the inner door frame profile, and weld the inner door frame profile to the inner corner to form a continuous closed annular channel for installing the sealing strip; S3: Design a matching embedded iron according to the structure of the outer door frame profile and fix it in the slot of the outer door frame profile; S4: Design a matching second arc transition groove for the outer corner based on the second feature groove of the outer door frame profile, and weld the outer door frame profile to the outer corner to form a continuous closed annular channel for installing conductive silicon core wire mesh strips; S5: Based on the external dimensions of the inner corner and the inner door frame profile after welding, design the matching external corner and the external door frame profile after welding to ensure precise fit between the inner and outer door frames. S6: Select the appropriate sealing strip and conductive silicon core wire mesh strip according to the size of the feature groove of the inner and outer door frames for installation.

[0018] Compared with the prior art, the beneficial effects of the corner connection mechanism of the shielding door frame provided by the present invention are as follows: 1. Enhanced High-Frequency Shielding Effectiveness: This invention designs matching inner / outer corners and inner / outer door frame profiles, enabling precise and smooth alignment of functional slots on the door frame at the corners, forming a continuous, uninterrupted annular channel. This eliminates the microscopic gaps generated at corners by traditional connection methods, ensuring the continuity of conductive pads (such as silicon core wire mesh strips), significantly improving the high-frequency electromagnetic shielding performance of the door frame, and overcoming the technical challenge of a 20-40dB decrease in shielding effectiveness due to corner gaps.

[0019] 2. Provide a low-impedance electrical path: By designing arc-shaped transition structures corresponding to the profile feature grooves at the inner and outer corners, the conductive silicon core wire mesh strips and sealing strips installed inside can maintain a continuous compression state at the corners, thereby providing a constant, low-impedance, and highly reliable electrical connection path throughout the circumference of the entire door frame.

[0020] 3. Enhanced Structural Rigidity and Stability: The arc-shaped solid connecting blocks at the inner corners and the rectangular block structure at the outer corners significantly enhance the structural strength and rigidity of the corner connections compared to simple corner fittings. Combined with L-shaped reinforcing ribs, the entire door frame is less prone to deformation during long-term opening and closing of the door leaf, ensuring the flatness and parallelism of the door frame and improving its long-term reliability.

[0021] 4. Simplified Installation and Debugging: The precise feature grooves at the corner joints ensure assembly accuracy and reduce on-site calibration work. Simultaneously, the cross-fitting of the feature grooves enables automatic alignment and clamping of multiple shielding components between the door leaf and frame, improving installation tolerance and efficiency.

[0022] In addition to the purposes, features, and advantages described above, this application has other purposes, features, and advantages. A further detailed description of this application will be provided below with reference to the figures. Attached Figure Description

[0023] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings: Figure 1 This invention provides a structural schematic diagram of the inner door frame; Figure 2 A sectional view of the inner door frame along the AA direction is provided for this invention; Figure 3A structural diagram of the inner corner is provided for this invention; Figure 4 The present invention provides a structural diagram of an outer door frame type; Figure 5 A CC-direction sectional view of the outer door frame type is provided for this invention; Figure 6 A BB-direction sectional view of the outer door frame type is provided for this invention; Figure 7 A structural diagram of the outer corner is provided for this invention; Figure 8 A DD-direction sectional view of the outer corner is provided for this invention; Figure 9 The present invention provides a structural diagram of the inner door frame and the outer door frame fitting together; Figure 10 The flowchart illustrates the shielding method for the corner connection mechanism shielding door frame proposed in this invention.

[0024] In the diagram: 1. Inner door frame profile; 2. Inner corner; 3. L-shaped reinforcing rib; 4. Embedded iron one; 5. Outer door frame profile one; 6. Outer corner; 7. Embedded iron two; 8. Outer door frame profile two; 9. Silicon core wire mesh strip one; 10. Silicon core wire mesh strip two; 25. Sealing strip; 11. First stop strip; 12. Second stop strip; 13. Third stop strip; 14. First profile body; 21. First arc-shaped stop strip; 22. Second arc-shaped stop strip; 23. Third arc-shaped stop strip; 24. Arc-shaped solid connecting block; 51. First partition; 52. Second partition; 53. Third partition; 54. Second profile body; 61. First arc-shaped partition; 62. Second arc-shaped partition; 63. Third arc-shaped partition; 81. Third profile body; 82. Flat sealing plate. Detailed Implementation

[0025] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0026] like Figures 1-9 As shown, the shielding door frame of the corner connection mechanism of the present invention includes an inner door frame frame and an outer door frame frame. The inner door frame frame is mainly welded together by inner door frame profile 1, inner corner 2, and L-shaped reinforcing rib 3. The outer door frame frame is mainly welded together by outer door frame profile 1, outer door frame profile 2, and outer corner 6.

[0027] Specifically, such as Figure 2As shown, the inner door frame profile 1 is provided with a first stop bar 11, a second stop bar 12, and a third stop bar 13, which are arranged in ascending order of height from the outside to the inside. The inner side of the third stop bar 13 is the first profile body 14, which is a hollow rectangular frame structure. Its side has slots and anchor holes for mates with embedded iron 4. Embedded iron 4 is inserted into the slot at the top of the first profile body 14 and then riveted and fixed with pop rivets, so that embedded iron 4 is riveted to the outside of the inner door frame profile of the inner door frame structure, further fixing the inner door frame profile 1 to the shielding door panel.

[0028] The first stop bar 11, the second stop bar 12, the third stop bar 13, and the first profile body 14 provided on the inner door frame profile 1 cooperate with each other to form at least one first feature groove. In this embodiment, the first feature groove is formed between the first stop bar 11 and the second stop bar 12, and the first feature groove is used to install the sealing strip 25.

[0029] like Figure 3 As shown, the inner corner 2 is a quarter-circle structure, and it is also equipped with a first arc-shaped retaining strip 21, a second arc-shaped retaining strip 22, and a third arc-shaped retaining strip 23 that match the shape of the inner door frame profile 1. The inner corner 2 also has an arc-shaped solid connecting block 24 that matches the shape of the first profile body 14. Among them, a first arc-shaped transition groove that matches the shape of the first feature groove is formed between the first arc-shaped retaining strip 21 and the second arc-shaped retaining strip 22.

[0030] During the assembly of the inner door frame, two mutually perpendicular inner door frame profiles 1 are connected by an inner corner 2. During connection, the first stop strip 11, the second stop strip 12, the third stop strip 13, and the first profile body 14 on the inner door frame profile 1 sequentially engage with the first arc-shaped stop strip 21, the second arc-shaped stop strip 22, the third arc-shaped stop strip 23, and the arc-shaped solid connecting block 24 on the inner corner 2, and are connected by welding. At this point, multiple feature grooves on the inner door frame profile 1 are connected at the corner by an arc-shaped transition groove on the inner corner 2 to form a continuous closed annular channel, used to install the annular sealing strip 25, thereby ensuring the sealing performance of the door structure.

[0031] In addition, L-shaped reinforcing ribs 3 are installed between the two vertically arranged inner door frame profiles 1 and fixed by welding to enhance the structural strength of the inner door frame and improve its stability.

[0032] like Figures 4-6 As shown, the outer door frame is composed of outer door frame profile 1 5 set on the left and right sides and bottom, outer door frame profile 2 8 at the top, and four outer corners 6 connected together.

[0033] like Figure 4 , Figure 5As shown, the outer door frame profile 5 is provided with a first partition 51, a second partition 52, a third partition 53, and a second profile body 54 from the outside to the inside. The second profile body 54 is a rectangular frame structure, and its side has slots and anchor holes for mating with embedded iron 7. Embedded iron 7 is inserted into the slot at the top of the second profile body 54, and then riveted and fixed with pop rivets, so that embedded iron 7 is riveted to the outside of the outer door frame profile 5 of the outer door frame structure, further fixing the outer door frame profile 5 to the shielding box.

[0034] The first partition 51, second partition 52, and third partition 53 on the outer door frame profile 5 cooperate to form at least one second feature groove. In this embodiment, the second feature groove includes a first sub-feature groove and a second sub-feature groove: a first sub-feature groove is formed between the first partition 51 and the second partition 52 for installing conductive silicon core wire mesh strip 10; a second sub-feature groove is formed between the second partition 52 and the third partition 53 for installing conductive silicon core wire mesh strip 9. These two grooves together constitute a combined channel for installing multiple shielding elements.

[0035] like Figure 6 As shown, the outer door frame profile 2 8 is provided with a first partition 51, a second partition 52, a third partition 53, and a third profile body 81 from the outside to the inside. The third profile body 81 has a U-groove structure, which is obtained by cutting a section off the second profile body 54; a flat sealing plate 82 is provided on the outside of the third profile body 81 to keep the entire outer door frame profile 2 8 flat to meet the special installation requirements of the top of the door frame.

[0036] like Figure 7 , Figure 8 As shown, the outer corner 6 is a rectangular block structure, with a first arc-shaped partition 61, a second arc-shaped partition 62, and a third arc-shaped partition 63 inside, matching the shapes of the first partition 51, the second partition 52, and the third partition 53. An arc-shaped transition groove corresponding to the first sub-feature groove is formed between the first arc-shaped partition 61 and the second arc-shaped partition 62, and an arc-shaped transition groove corresponding to the second sub-feature groove is formed between the second arc-shaped partition 62 and the third arc-shaped partition 63; these two arc-shaped transition grooves together constitute a second arc-shaped transition groove matching the shape of the second feature groove.

[0037] During the assembly of the outer door frame, two mutually perpendicular outer door frame profiles 5, or outer door frame profile 5 and outer door frame profile 8, are connected by an outer corner 6. The first partition 51, second partition 52, and third partition 53 on outer door frame profile 5 or outer door frame profile 8 are sequentially fitted with the first arc-shaped partition 61, second arc-shaped partition 62, and third arc-shaped partition 63 on the outer corner 6, and connected by welding. At this time, the second feature grooves (including the first and second sub-feature grooves) on outer door frame profiles 5 and 8 precisely align with the second arc-shaped transition groove on the outer corner 6, forming a continuous closed annular channel for installing the silicon core wire mesh strip 2 10 and silicon core wire mesh strip 9 of the annular structure, thereby ensuring that the electromagnetic shielding of the door structure is not interrupted at the corner.

[0038] like Figure 9 As shown, when the inner door frame and the outer door frame are fitted together, the first partition 51, the second partition 52, and the third partition 53 provided on the outer door frame profile 5 are arranged intersectingly with the first stop bar 11, the second stop bar 12, and the third stop bar 13 provided on the inner door frame profile 1.

[0039] Specifically, the third stop bar 13 extends into the first sub-feature groove between the first partition 51 and the second partition 52 to press and position the silicon core wire mesh strip 10 installed therein. The second stop bar 12 extends into the second sub-feature groove between the second partition 52 and the third partition 53 to press and position the silicon core wire mesh strip 9 installed therein. The third partition 53 corresponds to the first feature groove between the first stop bar 11 and the second stop bar 12, and is used to press and position the sealing strip 25 installed therein. By installing the above-mentioned sealing strip and two silicon core wire mesh strips with shielding function inside the continuously closed feature grooves, and ensuring its continuity at the corners through specially designed corners, the sealing performance and high-frequency shielding performance of the entire door structure are ensured.

[0040] like Figure 10 As shown, a shielding method for a shielding door frame based on the aforementioned corner connection mechanism is proposed, specifically including the following steps: S1: Based on the structural design of the inner door frame profile, match the dimensions of the internal embedded iron and rivet it in place; S2: Design a matching first arc transition groove for the inner corner based on the first characteristic groove of the inner door frame profile, and weld the two together to form a continuous closed annular channel for installing the sealing strip. S3: Based on the structural design of the outer door frame profile, match the dimensions of the internal embedded iron 2 and rivet it in place; S4: Design a second arc-shaped transition groove at the outer corner that matches the second feature groove of the outer door frame profile, and weld the two together to form a continuous closed annular channel for installing conductive silicon core wire mesh strips; S5: Based on the overall external dimensions of the inner corner and the inner door frame profile after welding, design the matching overall external dimensions of the outer corner and the outer door frame profile after welding, to ensure that the feature grooves can be precisely cross-fitted during the assembly of the inner and outer door frames. S6: Select the appropriate sealing strip and conductive silicon core wire mesh strip according to the size of the inner and outer door frame feature grooves for installation to complete the assembly of the shielding door frame.

[0041] This method ensures tight welded seams and strong electrical continuity in the door frame structure. Simultaneously, the high rigidity of the corner structure guarantees the flatness and parallelism of the overall door frame, improving overall assembly accuracy and significantly enhancing shielding and sealing performance. Experiments show that this structural door frame can meet the requirements for use in electronic shelters with a shielding requirement of 60dB.

[0042] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A shielding door frame with a corner connection mechanism, characterized in that, include: Inner door frame and outer door frame; The inner door frame includes multiple inner door frame profiles (1) and multiple inner corners (2), and two adjacent inner door frame profiles (1) are connected by the inner corners (2); The inner door frame profile (1) is provided with at least one first feature groove along its length direction; the inner corner (2) is provided with a first arc-shaped transition groove that matches the shape of the first feature groove; when the inner door frame profile (1) is connected to the inner corner (2), the first feature groove and the first arc-shaped transition groove are connected to form a continuous closed annular channel for installing the first annular sealing element. The outer door frame includes multiple outer door frame profiles and multiple outer corners (6), and two adjacent outer door frame profiles are connected by the outer corners (6); The outer door frame profile is provided with at least one second feature groove along its length direction; the outer corner (6) is provided with a second arc-shaped transition groove that matches the shape of the second feature groove; when the outer door frame profile is connected to the outer corner (6), the second feature groove and the second arc-shaped transition groove are connected to form a continuous closed annular channel for installing the second annular shielding element.

2. The shielding door frame of the corner connection mechanism according to claim 1, characterized in that, The inner door frame profile (1) includes a first baffle (11), a second baffle (12) and a third baffle (13) arranged sequentially from the outside to the inside, and a first profile body (14); the first feature groove is formed between the first baffle (11) and the second baffle (12) for installing a sealing strip (25); the first profile body (14) is a hollow rectangular frame structure, and its side is provided with a slot for installing an embedded iron (4).

3. The shielding door frame of the corner connection mechanism according to claim 2, characterized in that, The inner corner (2) is a 1 / 4 disc structure, on which are provided a first arc-shaped baffle (21), a second arc-shaped baffle (22), a third arc-shaped baffle (23) and an arc-shaped solid connecting block (24) corresponding to the first baffle (11), the second baffle (12), the third baffle (13) and the first profile body (14); the first arc-shaped transition groove is formed between the first arc-shaped baffle (21) and the second arc-shaped baffle (22).

4. The shielding door frame of the corner connection mechanism according to claim 2, characterized in that, The outer door frame profile includes a first partition (51), a second partition (52), and a third partition (53) arranged sequentially from the outside to the inside, as well as a second profile body (54); a first sub-feature groove is formed between the first partition (51) and the second partition (52) for installing conductive silicon core wire mesh strip two (10); a second sub-feature groove is formed between the second partition (52) and the third partition (53) for installing conductive silicon core wire mesh strip one (9); the first sub-feature groove and the second sub-feature groove together constitute the second feature groove.

5. The shielding door frame of the corner connection mechanism according to claim 4, characterized in that, The outer corner (6) is a rectangular block structure, and its interior is provided with a first arc-shaped partition (61), a second arc-shaped partition (62), and a third arc-shaped partition (63) that match the shapes of the first partition (51), the second partition (52), and the third partition (53); arc-shaped transition grooves corresponding to the first sub-feature groove and the second sub-feature groove are formed between the first arc-shaped partition (61) and the second arc-shaped partition (62), and between the second arc-shaped partition (62) and the third arc-shaped partition (63), respectively.

6. The shielding door frame of the corner connection mechanism according to claim 4, characterized in that, When the inner door frame is engaged with the outer door frame, the third stop bar (13) on the inner door frame profile (1) extends into the first sub-feature groove of the outer door frame profile to press the conductive silicon core wire mesh strip (10).

7. The shielding door frame of the corner connection mechanism according to claim 4, characterized in that, The second stop bar (12) on the inner door frame profile (1) extends into the second sub-feature groove of the outer door frame profile to press the conductive silicon core wire mesh strip (9), and the third partition (53) on the outer door frame profile extends into the first feature groove of the inner door frame profile (1) to press the sealing strip (25).

8. The shielding door frame of the corner connection mechanism according to claim 1, characterized in that, The outer door frame includes an outer door frame profile one (5) located on the left and right sides and the bottom, and an outer door frame profile two (8) located at the top; the outer door frame profile two (8) has a third profile body (81) with a U-shaped groove structure, and a flat sealing plate (82) is provided on its exterior.

9. The shielding door frame of the corner connection mechanism according to claim 1, characterized in that, The inner door frame also includes an L-shaped reinforcing rib (3), which is welded between two vertically arranged inner door frame profiles (1).

10. A shielding method for a corner connection mechanism shielding door frame, applied to the shielding door frame of the corner connection mechanism according to any one of claims 1 to 9, characterized in that, Includes the following steps: S1: Design an embedded iron (4) that matches the structure of the inner door frame profile (1) and fix it in the slot of the inner door frame profile (1); S2: Design the first arc transition groove of the inner corner (2) that matches the first feature groove of the inner door frame profile (1), and weld the inner door frame profile (1) and the inner corner (2) to form a continuous closed annular channel for installing the sealing strip (25). S3: Design a matching embedded iron 2 (7) according to the structure of the outer door frame profile and fix it in the slot of the outer door frame profile; S4: Design the second arc transition groove of the outer corner (6) that matches the second feature groove of the outer door frame profile, and weld the outer door frame profile to the outer corner (6) to form a continuous closed annular channel for installing conductive silicon core wire mesh strips; S5: Based on the outer dimensions of the inner corner (2) and the inner door frame profile (1) after welding, design the matching outer corner (6) and the outer door frame profile after welding; S6: Select the appropriate sealing strip (25) and conductive silicon core wire mesh strip according to the size of the inner and outer door frame feature grooves for installation.

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