Modularized anti-theft door with replaceable panel

Abstract

The invention belongs to the technical field of anti-theft doors, and provides a modular panel-replaceable anti-theft door which comprises a door frame body arranged on a wall, a metal barrier strip is arranged on the front end face of the door frame body, a front panel is arranged in the door frame body and attached to the metal barrier strip, and a rear panel detachably connected with the door frame body is arranged on the back face of the door frame body. A guide block is arranged on the side, close to the rear panel, of the front panel and close to the edge, an outwards-formed matching groove is formed in the inner wall of the door frame body, and the guide block is matched with the matching groove. The door frame further comprises a positioning and locking assembly, the positioning and locking assembly is installed on the side, close to the guide block, of the front panel, and the front panel is fixedly installed in the door frame body through the positioning and locking assembly. The door plate and the door main body are in a detachable mode, a user can replace door plates of different styles according to needs, and the adaptability of the anti-theft door is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of anti-theft doors, and specifically relates to an anti-theft door with modular replaceable panels. Background Art

[0002] An anti-theft door is a special door with functions such as anti-prying, anti-drilling, and anti-impact. It has multiple functions. Among them, through high-strength steel plates and a multi-point locking system, it prevents violent door prying. The lock core adopts an anti-drilling design to prevent technical unlocking. The internal steel bar keel and carbon steel mesh enhance the anti-impact ability;

[0003] Moreover, the internal filling of fireproof rock wool in the anti-theft door can delay the spread of fire and gain time for escape. The polyurethane foam filling material effectively reduces noise and improves the living comfort. Therefore, it is widely used in places such as families, commercial sites, and public facilities, effectively improving the overall safety protection level.

[0004] However, traditional anti-theft doors usually adopt an integral structure, and the door leaf is fixedly connected to the panel, having the following defects:

[0005] High maintenance cost: Local damage requires the entire replacement of the door leaf, resulting in waste of resources.

[0006] Fixed appearance: It cannot adapt to the personalized needs of users for changes in decoration styles. Summary of the Invention

[0007] In order to solve the above technical problems, the present invention provides an anti-theft door with modular replaceable panels to solve the problems in the prior art that traditional anti-theft doors usually adopt an integral structure and cannot replace the panel, etc.

[0008] An anti-theft door with modular replaceable panels includes a door frame main body installed on a wall. A through installation chamber is provided inside the door frame main body. A metal bar is provided on the front end face of the door frame main body. A front panel is attached to the metal bar inside the door frame main body. A rear panel is detachably connected to the back of the door frame main body. A guiding block is provided near the edge on the side of the front panel close to the rear panel. A mating groove is provided on the inner wall of the door frame main body and opens outward. The guiding block and the mating groove cooperate with each other;

[0009] It further includes a positioning and locking assembly. The positioning and locking assembly is installed on the side of the front panel close to the guiding block. The front panel is fixedly installed inside the door frame main body through the positioning and locking assembly.

[0010] Preferably, the vertical cross-sectional profile of the metal bar is a hollow rectangle, and the hollow area inside the metal bar is smaller than the hollow area inside the installation chamber. The metal bar is connected to the door frame main body by welding. A surrounding sealing strip is provided on the outer periphery of the front panel.

[0011] Preferably, the guiding block is fixed on the front panel and one end thereof extends out of the front panel. The guiding block is fixedly installed in four directions of up, down, left and right on the front panel, and the fitting groove communicates with the installation chamber.

[0012] Preferably, an installation groove is provided on the side wall of the door frame body close to the rear panel. The installation grooves are symmetrically distributed left and right on the door frame body, and the installation groove communicates with the installation chamber. A reinforcing skeleton is arranged in the installation chamber. The reinforcing skeleton cooperates with the installation groove, and the front end face of the reinforcing skeleton is movably attached to the front panel.

[0013] Preferably, the reinforcing skeleton is composed of multiple horizontal high-strength steel plates and one vertical high-strength steel plate. The horizontal steel plates of the reinforcing skeleton cooperate with the installation groove, and multiple layers of fireproof rock wool are placed in the reinforcing skeleton.

[0014] Preferably, the positioning and locking assembly includes a bearing ring, a rotating column, an arc-shaped clamping ring, a limiting block, a positioning rod and a jacking spring. The bearing ring is fixedly connected to the side of the front panel close to the rear panel and is distributed near the four corners. The rotating column is movably inserted into the bearing ring. The arc-shaped clamping rings are symmetrically and fixedly installed in the bearing ring, and a jacking hole is formed between the two arc-shaped clamping rings.

[0015] Preferably, a limiting chamber is formed between the bottom of the arc-shaped clamping ring and the bottom of the bearing ring. A rotatable connecting rotating plate is provided at the bottom of the arc-shaped clamping ring, and the rotating plate can close the top of the jacking hole. The positioning rod is arranged on the outer wall of the rotating column, and the positioning rod is distributed at a right angle on the outer wall of the rotating column. The positioning rod is composed of two cylinders with different diameters and they are movably matched. The small-diameter cylinder is fixedly connected to the rotating column, and the jacking spring is sleeved on the small-diameter cylinder. A positioning circular groove is provided on the inner side wall of the door frame body, and the positioning rod cooperates with the positioning circular groove.

[0016] Preferably, a guiding groove is provided on the side of the door frame body close to the rear panel, and a guiding strip is provided on the side of the rear panel close to the door frame body. The guiding strip cooperates with the guiding groove. Locking screws are provided at intervals on the inner upper part of the rear panel. When the rear panel covers the door frame body, the locking screws are locked in the door frame body.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention provides a door frame body, a front panel and a rear panel are arranged inside the door frame body, a guide block is arranged on the front panel, the guide block cooperates with the matching groove on the door frame body, and a positioning locking assembly is further arranged on the front panel, the positioning locking assembly can cooperate with the positioning hole in the door frame body, so that after the front panel is installed, the front panel can be fixed in the door frame body through the positioning locking assembly, and the detachable connection of the front panel is realized. Therefore, when the front panel of the anti-theft door encounters local damage, the user can only replace the front panel without replacing the entire anti-theft door, thereby reducing the replacement cost, and the user can change the panel style at any time according to the decoration style or demand, meet the changes in different decoration styles, and improve the flexibility of the anti-theft door.

[0019] 2. The present invention designs the rear panel to be detachable. The rear panel is designed to be connected to the door frame body by screws, which makes it easy to disassemble the rear panel so that it can be replaced by installing the front panel in the chamber, saving time. During the installation of the front panel, the front panel fits tightly with the metal baffle welded on the door frame body, thereby avoiding the formation of a gap between the two due to the split design. After the front panel is installed, it looks like an integrated design from the outside, thereby maintaining the overall integrity of the anti-theft door and avoiding the situation where the security of the anti-theft door is reduced due to the design of the front panel as a split structure.

[0020] 3. The length of the positioning rod provided by the present invention can be changed. Under the action of the lifting spring, when the positioning rod is rotated to cooperate with the positioning circular groove, the positioning rod can be inserted into the positioning circular groove, thereby fixing the front panel and the door frame body together. In addition, there are two positioning rods on each rotating column, which are vertically distributed and can be inserted into the door frame body from two angles. Together with other positioning rods, the stability of the front panel and the door frame body after installation is further improved.

[0021] 4. The present invention provides a guide groove on the door frame body, and the guide strip is fixedly connected to the rear panel and cooperates with the guide groove, so that the alignment degree between the rear panel and the door frame body after installation can be improved and the tilting of the rear panel after installation can be reduced. In addition, the rear panel and the door frame body are locked by locking screws. On the one hand, the rear panel can be fixed on the door frame body, and when the front panel is to be replaced, the rear panel can be removed by only removing the locking screws, thereby shortening the replacement time. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the structure of the split components of the anti-theft door of the present invention;

[0023] Figure 2 This is a schematic diagram of the structure of the integral anti-theft door components of the present invention;

[0024] Figure 3 This is a schematic structural diagram of the front panel, guide block and other components of the present invention;

[0025] Figure 4 This is a schematic structural diagram of the positioning and locking assembly components of the present invention;

[0026] Figure 5 This is a schematic structural diagram of the disassembled components of the rotating column and the bearing ring of the present invention;

[0027] Figure 6 This is a schematic structural diagram of the door frame main body, strengthening skeleton and other components of the present invention;

[0028] Figure 7 This is a schematic structural diagram of the door frame main body components of the present invention;

[0029] Figure 8 This is a schematic structural diagram of the rear panel components of the present invention.

[0030] In the figure:

[0031] 1. Door frame main body; 2. Installation chamber; 3. Metal strip; 4. Front panel; 5. Rear panel; 6. Guide block; 7. Fitting groove; 8. Sealing strip; 9. Installation groove; 10. Strengthening skeleton; 11. Fireproof rock wool; 12. Bearing ring; 13. Rotating column; 14. Arc-shaped clamping ring; 15. Limiting block; 16. Positioning rod; 17. Lifting spring; 18. Insertion hole; 19. Limiting chamber; 20. Rotating plate; 21. Positioning circular groove; 22. Guide groove; 23. Guide strip; 24. Locking screw. Specific embodiments

[0032] The following further describes the embodiments of the present invention in detail with reference to the drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0033] As shown in the attached Figure 1 to the attached Figure 8 shown:

[0034] Embodiment 1: The present invention provides an anti-theft door with modular replaceable panels, including a door frame main body 1 installed on a wall. The door frame main body 1 is internally provided with a through installation chamber 2. A metal strip 3 is provided on the front end face of the door frame main body 1. A front panel 4 is attached to the inside of the door frame main body 1 and is in contact with the metal strip 3. A rear panel 5 detachably connected is provided on the back of the door frame main body 1. A guide block 6 is provided near the edge on the side of the front panel 4 close to the rear panel 5. A fitting groove 7 opened outwards is provided on the inner wall of the door frame main body 1. The guide block 6 and the fitting groove 7 cooperate with each other;

[0035] It further includes a positioning and locking assembly. The positioning and locking assembly is installed on the side of the front panel 4 close to the guide block 6, and the front panel 4 is fixedly installed in the door frame main body 1 through the positioning and locking assembly.

[0036] It should be noted that through the set doorframe main body 1, a front panel 4 and a rear panel 5 are arranged inside the doorframe main body 1. A guide block 6 is arranged on the front panel 4, and the guide block 6 cooperates with a mating groove 7 on the doorframe main body 1. A positioning and locking assembly is also arranged on the front panel 4, and the positioning and locking assembly can cooperate with a positioning hole inside the doorframe main body 1. Thus, after the front panel 4 is installed, the front panel 4 can be fixed inside the doorframe main body 1 through the positioning and locking assembly, realizing the detachable connection of the front panel 4. Therefore, when the front panel 4 of the anti-theft door is partially damaged, the user can only replace the front panel 4 without replacing the whole anti-theft door, reducing the replacement cost. Moreover, the user can replace the panel style at any time according to the decoration style or needs, meeting the changes of different decoration styles and improving the flexibility of the anti-theft door;

[0037] Furthermore, by designing the rear panel 5 to be detachable as well, the rear panel 5 is connected to the doorframe main body 1 by a screw connection method, which is convenient for disassembling the rear panel 5 so that it can be replaced through the front panel 4 in the installation chamber 2, saving time. When the front panel 4 is installed, the metal strip 3 welded to the doorframe main body 1 fits closely, thus avoiding the generation of gaps between the two due to the split design. After the front panel 4 is installed, from the outside, it appears as an integral design as a whole, maintaining the integrity of the whole anti-theft door and avoiding the situation of reducing the security of the anti-theft door due to designing it into a split structure.

[0038] In this embodiment, the vertical cross-sectional profile of the metal strip 3 is a hollow rectangle, and the hollow area inside the metal strip 3 is smaller than the hollow area inside the installation chamber 2. The metal strip 3 is connected to the doorframe main body 1 by welding, and a surrounding sealing strip 8 is provided on the outer wall around the front panel 4.

[0039] It should be noted that by making the hollow area inside the metal strip 3 smaller than the hollow area inside the installation chamber 2, when the front panel 4 moves forward to the front end in the installation chamber 2, it will fit with the metal strip 3, reducing the generation of gaps between the doorframe main body 1 and the front panel 4. By adopting the welding method, the firmness between the metal strip 3 and the doorframe main body 1 can be improved. A sealing strip 8 is arranged on the outer wall of the front panel 4, so that during the movement of the front panel 4 in the installation chamber 2, the sealing performance between it and the doorframe main body 1 can be improved.

[0040] In this embodiment, the guide block 6 is fixed on the front panel 4 and one end of it extends out of the front panel 4. The guide block 6 is fixedly installed in the four directions of up, down, left and right of the front panel 4, and the mating groove 7 communicates with the installation chamber 2.

[0041] It should be noted that through the arranged guiding block 6, the guiding block 6 cooperates with the mating groove 7, so as to provide guidance for the installation of the front panel 4. On the one hand, the installation accuracy of the front panel 4 is improved, and the situation of inclination after installation is reduced. Moreover, through the direct cooperation between the arranged guiding block 6 and the mating groove 7, the installation is more convenient and the convenience is improved.

[0042] In this embodiment, an installation groove 9 is provided on the side wall of the door frame body 1 close to the rear panel 5. The installation grooves 9 are symmetrically distributed on the left and right on the door frame body 1, and the installation groove 9 communicates with the installation chamber 2. A reinforcing skeleton 10 is provided in the installation chamber 2. The reinforcing skeleton 10 cooperates with the installation groove 9, and the front end face of the reinforcing skeleton 10 is in movable contact with the front panel 4.

[0043] It should be noted that by providing the installation groove 9 on the door frame body 1 and the reinforcing skeleton 10 in the installation chamber 2, and the reinforcing skeleton 10 cooperates with the installation groove 9, the reinforcing skeleton 10 is also designed to be detachable. In the case of needing to replace the front panel 4, the reinforcing skeleton 10 can also be taken out of the installation chamber 2, which will not affect the replacement of the front panel 4;

[0044] In this embodiment, the reinforcing skeleton 10 is composed of multiple horizontal high-strength steel plates and one vertical high-strength steel plate. The horizontal steel plates of the reinforcing skeleton 10 cooperate with the installation groove 9, and multiple layers of fireproof rock wool 11 are placed in the reinforcing skeleton 10.

[0045] It should be noted that after the rear panel 5 is installed, both sides of the reinforcing skeleton 10 are in contact with the front panel 4 and the rear panel 5 respectively, thus improving the safety of the overall anti-theft door. Multiple layers of fireproof rock wool 11 are arranged inside the reinforcing skeleton 10, which improves the overall strength of the anti-theft door while retaining the functions of fire prevention and sound insulation.

[0046] In this embodiment, the positioning and locking assembly includes a bearing ring 12, a rotating column 13, an arc-shaped clamping ring 14, a limiting block 15, a positioning rod 16 and a jacking spring 17. The bearing ring 12 is fixedly connected to the side of the front panel 4 close to the rear panel 5 and is distributed near the four corners. The rotating column 13 is movably inserted into the bearing ring 12. The arc-shaped clamping rings 14 are symmetrically and fixedly installed in the bearing ring 12, and a jacking hole 18 is formed between the two arc-shaped clamping rings 14.

[0047] It should be noted that by fixedly installing the bearing ring 12 at the four corners of the front panel 4, the stability of the front panel 4 after installation can be improved. The rotating column 13 is inserted into the bearing ring 12 and can rotate. The inner wall of the arc-shaped clamping ring 14 cooperates with the outer wall of the rotating column 13. The limiting block 15 is fixedly connected to the rotating column 13, and the limiting block 15 can pass through the jack 18 and enter the limiting chamber 19, so that the detachable connection of the rotating column 13 on the bearing ring 12 can be realized. When the front panel 4 needs to be replaced, the rotating column 13 can be detached from the bearing ring 12 and assembled with the bearing ring 12 on the new front panel 4, further reducing the cost.

[0048] In this embodiment, a limiting chamber 19 is formed between the bottom of the arc-shaped clamping ring 14 and the bottom of the bearing ring 12. A rotatable rotating plate 20 is provided at the bottom of the arc-shaped clamping ring 14, and the rotating plate 20 can close the top of the jack 18. The positioning rod 16 is arranged on the outer wall of the rotating column 13, and the positioning rod 16 is distributed at a right angle on the outer wall of the rotating column 13. The positioning rod 16 is composed of two nested cylindrical bodies with different diameters. The small-diameter cylindrical body is fixedly connected to the rotating column 13, and the jacking spring 17 is sleeved on the small-diameter cylindrical body. A positioning circular groove 21 is provided on the inner side wall of the door frame main body 1, and the positioning rod 16 cooperates with the positioning circular groove 21.

[0049] It should be noted that by providing the positioning rod 16, the length of the positioning rod 16 can be changed. Under the action of the jacking spring 17, when the positioning rod 16 rotates to cooperate with the positioning circular groove 21, the positioning rod 16 can be inserted into the positioning circular groove 21, so as to fixedly connect the front panel 4 and the door frame main body 1 together. Moreover, the number of positioning rods 16 on each rotating column 13 is two, and they are distributed vertically, and can be inserted into the door frame main body 1 from two angles, cooperating with other positioning rods 16, further improving the stability of the front panel 4 and the door frame main body 1 after installation.

[0050] In this embodiment, a guide groove 22 is provided on the side of the door frame main body 1 close to the rear panel 5, and a guide strip 23 is provided on the side of the rear panel 5 close to the door frame main body 1. The guide strip 23 cooperates with the guide groove 22. Locking screws 24 are provided on the inner upper part of the rear panel 5 at intervals. When the rear panel 5 covers the door frame main body 1, the locking screws 24 are locked in the door frame main body 1.

[0051] It should be noted that by providing the guiding groove 22 on the doorframe main body 1, and the guiding strip 23 is fixedly connected to the rear panel 5 and cooperates with the guiding groove 22, the alignment degree after the installation of the rear panel 5 and the doorframe main body 1 can be improved, and the situation of the rear panel 5 tilting after installation can be reduced. Moreover, the rear panel 5 and the doorframe main body 1 are locked by the locking screws 24. On the one hand, the rear panel 5 can be fixed to the doorframe main body 1, and after the front panel 4 needs to be replaced, only by removing the locking screws 24 can the rear panel 5 be removed, shortening the replacement time.

[0052] For the usage method of the above embodiment, when the anti-theft door is installed on the wall, when the front panel 4 needs to be replaced, first unscrew the locking screws 24 on the rear panel 5 and remove the rear panel 5 from the doorframe main body 1. At this time, the installation chamber 2 inside the doorframe main body 1 can be seen. The reinforcing skeleton 10 is movably installed in the installation groove 9. Take the fireproof rock wool 11 off the reinforcing skeleton 10, and then take the reinforcing skeleton 10 out of the installation groove 9. At this time, the front panel 4 can be seen, but at this time the front panel 4 is fixedly connected to the doorframe main body 1;

[0053] The positioning rod 16 is inserted into the positioning circular groove 21. Control the positioning rod 16 to shorten its length and disengage from the positioning circular groove 21. When all the positioning rods 16 disengage from the positioning circular groove 21, the front panel 4 can be separated from the doorframe main body 1. The front panel 4 moves backward and is taken out from the doorframe main body 1. At this time, the rotating column 13 is movably connected in the bearing ring 12. Pull up the rotating column 13 to see the arc-shaped clamping ring 14. At this time, the rotating plate 20 on the arc-shaped clamping plate closes the jack 18, and the limiting block 15 cannot disengage from the jack 18. Rotate the rotating plate 20 to expose the jack 18, and rotate the rotating column to make the limiting block 15 disengage from the jack 18, so that the separation of the rotating column 13 and the bearing ring 12 can be realized and removed from the front panel 4;

[0054] Replace with a new front panel 4, and then reconnect the rotating column 13 with the bearing ring 12 in the above installation method. Rotate the rotating column 13 to insert the positioning rod 16 into the positioning hole again to install the reinforcing skeleton 10. Finally, install the rear panel 5 on the doorframe main body 1, realizing the replacement of the front panel 4, enabling the user to change the panel style at any time according to the decoration style or requirements, meeting the changes of different decoration styles.

[0055] The embodiments of the present invention are given for the purpose of illustration and description. Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A modular anti-theft door with replaceable panels, characterized in that: include: A door frame body (1) is arranged on a wall, wherein a penetrating installation chamber (2) is provided inside the door frame body (1), a metal stop bar (3) is provided on the front end surface of the door frame body (1), a front panel (4) is provided inside the door frame body (1) and in contact with the metal stop bar (3), a detachable rear panel (5) is provided on the back of the door frame body (1), a guide block (6) is provided near the edge of a side of the front panel (4) close to the rear panel (5), a matching groove (7) opened outward is provided on the inner wall of the door frame body (1), and the guide block (6) and the matching groove (7) are matched with each other; It also comprises a positioning locking assembly, which is mounted on a side of the front panel (4) close to the guide block (6), and the front panel (4) is fixedly mounted in the door frame body (1) through the positioning locking assembly.

2. The anti-theft door with modular replaceable panels as claimed in claim 1, characterized in that: The vertical cross-sectional profile of the metal baffle (3) is a hollow rectangle, and the internal hollow area of ​​the metal baffle (3) is smaller than the internal hollow area of ​​the installation chamber (2). The metal baffle (3) is connected to the door frame body (1) by welding, and a surrounding sealing strip (8) is provided on the outer wall of the front panel (4).

3. The anti-theft door with modular replaceable panels as claimed in claim 1, characterized in that: The guide block (6) is fixed on the front panel (4) and one end of the guide block (6) extends out of the front panel (4). The guide block (6) is fixedly installed in four directions of up, down, left and right on the front panel (4). The matching groove (7) is interconnected with the installation chamber (2).

4. The anti-theft door with modular replaceable panels as claimed in claim 1, characterized in that: The door frame body (1) is provided with a mounting groove (9) on the side wall close to the rear panel (5); the mounting grooves (9) are symmetrically distributed on the door frame body (1), and the mounting grooves (9) are interconnected with the mounting chamber (2); a reinforcing frame (10) is provided in the mounting chamber (2); the reinforcing frame (10) and the mounting grooves (9) cooperate with each other, and the front end surface of the reinforcing frame (10) is movably fitted with the front panel (4).

5. The anti-theft door with modular replaceable panels as claimed in claim 4, characterized in that: The reinforcing frame (10) is composed of a plurality of transverse high-strength steel plates and a vertical high-strength steel plate. The transverse steel plates of the reinforcing frame (10) cooperate with the mounting grooves (9). Multiple layers of fireproof rock wool (11) are placed in the reinforcing frame (10).

6. The anti-theft door with modular replaceable panels as claimed in claim 1, characterized in that: The positioning and locking assembly comprises a bearing ring (12), a rotating column (13), an arc-shaped snap ring (14), a limit block (15), a positioning rod (16) and a lifting spring (17); the bearing ring (12) is fixedly connected to the side of the front panel (4) close to the rear panel (5) and distributed close to the four corners; the rotating column (13) is movably inserted into the bearing ring (12); the arc-shaped snap ring (14) is symmetrically fixedly installed in the bearing ring (12); and an insertion hole (18) is formed between the two arc-shaped snap rings (14).

7. The anti-theft door with modular replaceable panels as claimed in claim 6, characterized in that: A limiting chamber (19) is formed between the arc-shaped snap ring (14) and the bottom of the bearing ring (12); a rotatably connected rotating plate (20) is provided at the bottom of the arc-shaped snap ring (14); the rotating plate (20) can close the top of the insertion hole (18); the positioning rod (16) is arranged on the outer wall of the rotating column (13); and the positioning rod (16) is distributed at a right angle on the outer wall of the rotating column (13); the positioning rod (16) is composed of two sections of columns with different diameters and the two sections are movably matched; the small diameter column is fixedly connected to the rotating column (13); the lifting spring (17) is sleeved on the small diameter column; a positioning circular groove (21) is provided on the inner side wall of the door frame body (1); the positioning rod (16) and the positioning circular groove (21) cooperate with each other.

8. The anti-theft door with modular replaceable panels as claimed in claim 1, characterized in that: A guide groove (22) is provided on the side of the door frame body (1) close to the rear panel (5), and a guide strip (23) is provided on the side of the rear panel (5) close to the door frame body (1). The guide strip (23) cooperates with the guide groove (22). Locking screws (24) are arranged at intervals inside the rear panel (5). When the rear panel (5) is covered on the door frame body (1), the locking screws (24) are locked inside the door frame body (1).

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