Composite armored security door with built-in anti-drilling alloy layer
By incorporating anti-drilling alloy layer and reinforcement components in the anti-theft door, the ball limit and grid structure are used to change the axial force of the drill bit and embedded hard particles, the problem of the anti-theft door being drilled through is solved and efficient anti-drilling effect is achieved.
Patent Information
- Application Number
- CN202510938941.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-08
- Publication Date
- 2025-08-22
AI Technical Summary
When existing security doors are attacked by tools such as electric drills, the door panels are easily drilled through, and thieves can easily open the door lock and commit theft.
The anti-drilling alloy layer and reinforcement components are built in the anti-theft door, including the high-strength alloy steel anti-drilling layer, the ball limit structure and the grid reinforcement structure. The anti-drilling effect is enhanced by changing the axial force direction of the drill bit and the hard particles embedded in the drill bit spiral groove.
It significantly improves the anti-drilling capability of the anti-theft door, extends the life of the drill bit, increases the wear of the drill bit, prevents drilling ability, and enhances the overall protection performance.
Smart Images
Figure CN120520501A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of anti-theft doors, in particular to a composite armored anti-theft door with a built-in anti-drilling alloy layer. Background Art
[0002] With the rapid development of social economy, people's living standards are constantly improving, the value of family property is increasing, and safety awareness is also significantly enhanced. As the first line of defense for family safety, the importance of anti-theft doors is becoming more and more prominent. The current protective performance of traditional anti-theft doors can no longer meet people's higher requirements for safety. The continuous upgrading of theft methods has exposed many safety hazards to traditional anti-theft doors.
[0003] In the prior art, ordinary security doors are easily drilled through when attacked by tools such as electric drills, allowing thieves to easily unlock the door and enter the house to commit theft. Inventing a composite armored security door with a built-in anti-drilling alloy layer to solve these problems has become an urgent problem for those skilled in the art. Summary of the Invention
[0004] In order to make up for the above shortcomings, the present invention provides a composite armored anti-theft door with a built-in anti-drill alloy layer, which aims to solve the problem that ordinary anti-theft doors can be easily drilled through when attacked by tools such as electric drills, allowing thieves to easily open the door lock and enter the room to commit theft.
[0005] The present invention is achieved in that:
[0006] The present invention provides a composite armored anti-theft door with a built-in anti-drilling alloy layer, comprising a door frame and a first reinforcement component arranged inside the door frame, wherein the inner wall of the door frame is sequentially mounted with an outer steel plate, an anti-drilling layer and an inner steel plate;
[0007] The first reinforcement component is arranged between the anti-drilling layer and the inner steel plate, and the first reinforcement component includes a reinforcement plate and a plurality of adjustment blocks and balls.
[0008] Preferably, the side walls of the outer steel plate and the inner steel plate are fixedly connected to the inner wall of the door frame, and the outer steel plate and the inner steel plate are made of high-strength cold-rolled steel plates.
[0009] Preferably, the side wall of the anti-drill layer is fixedly connected to the inner wall of the door frame. The anti-drill layer is made of high-strength alloy steel as a matrix and is quenched by adding tungsten, molybdenum and vanadium. One side of the anti-drill layer is bonded with a fireproof layer bonded and fixed to the outer steel plate, and the fireproof layer is made of fireproof rock wool material.
[0010] Preferably, the side wall of the reinforcing plate is fixedly connected to the inner wall of the door frame, the reinforcing plate is made of high-strength cold-rolled steel plate, and a plurality of equidistant limiting grooves are provided on the outer wall of the reinforcing plate close to the anti-drilling layer.
[0011] Preferably, the lower end of the adjustment block is fixedly connected to a limit block that is slidably connected to the inner wall of the limit groove. A rolling groove is opened on one side of the adjustment block. The inner wall of the rolling groove is rollingly connected to a ball, and the ball is made of high carbon chromium bearing steel.
[0012] Preferably, the inner walls at both ends of the limiting groove are fixedly connected with springs that abut against the side wall of the adjustment block on one side, and the outer walls at the four corners of the adjustment block are fixedly connected with four identical arc blocks. When the four adjustment blocks are fitted together, the top of the four arc blocks combination is a spherical surface.
[0013] By adopting the above technical solution, a plurality of contacting balls are provided on the first reinforcement assembly. When the drill bit drills, the side wall of the drill bit contacts the surface of the balls. During the rotation of the drill bit, the balls roll and change the direction of the axial force of the drill bit, causing the angle of the drill bit to deviate and be unable to concentrate on a single point, thereby increasing the difficulty of drilling and improving the overall anti-drilling effect. At the same time, the balls made of high-carbon chromium bearing steel will wear the drill bit in the opposite direction when in contact with the drill bit, shortening its lifespan while further preventing it from cutting the balls. At the same time, when the drill bit drills into two balls parallel to the limit groove, the drill bit first presses against the surface of the balls and pushes the balls on both sides during downward drilling. The balls then press against the multiple adjustment blocks on both sides and compress the springs at both ends to move until the position of the adjustment blocks is fixed. At this time, the pressure at one end of the drill bit will fully act on the surfaces of the balls on both sides. The curved surface of the balls further disperses the force and rolls to change the direction of the drill bit. Therefore, breaking the balls requires a continuous and stable force perpendicular to the reinforcement plate, further increasing the difficulty of breaking the balls and improving the overall anti-drilling effect.
[0014] Preferably, a second reinforcement component is installed between the first reinforcement component and the inner steel plate, and the second reinforcement component consists of a first reinforcement net and a second reinforcement net.
[0015] Preferably, the first reinforcing net and the second reinforcing net are both made of several spring steel rods fixed by vertical full welding, the spring steel rods between the first reinforcing net and the second reinforcing net are staggered, and the inner steel plate and the reinforcing plate are filled with anti-drilling putty to seal the second reinforcing component.
[0016] By adopting the above technical solution, the first reinforcement net and the second reinforcement net are welded into a grid structure with spring steel bars. When the drill bit acts on the reinforcement net, the local stress on the net body will be quickly dispersed to the entire structure, thereby avoiding rapid penetration due to excessive local force, thereby improving the overall anti-drilling effect of the door body, and the anti-drilling putty filled in the grid gap is made of a mixture of epoxy resin, quartz sand and metal debris. When the drill bit drills into the grid gap, the quartz sand and metal debris particles in the putty will contact the drill bit spiral groove. As the drill bit rotates, these hard particles will be embedded in the spiral groove, which not only increases the resistance to the drill bit rotation, causing the drill bit to be overloaded and overloaded to stop, but also the friction between the hard particles and the drill bit will accelerate the wear of the drill bit, causing the drill bit edge to quickly blunt and lose drilling ability, thereby further improving the overall anti-drilling effect.
[0017] The beneficial effects of the present invention are:
[0018] The anti-drilling layer uses high-strength alloy steel as its matrix, providing toughness support and preventing brittle fracture of the alloy layer. By adding large amounts of tungsten, molybdenum, and vanadium, high-hardness carbides are formed during the quenching process and evenly distributed in the matrix, hindering the drill bit from cutting and improving the overall anti-drilling effect. The first reinforcement component causes the ball bearings to roll and change the direction of the drill bit's axial force during the process of contact and rotation of the drill bit. The drill bit's angle deviates and cannot be concentrated at a single point, thereby increasing the difficulty of drilling and improving the overall anti-drilling effect. At the same time, the ball bearings made of high-carbon chromium bearing steel will wear the drill bit in the opposite direction when in contact with the drill bit. The springs provided on the inner walls of the limit slot at both ends compress the springs at both ends when the drill bit contacts the ball bearings, causing them to move until the position of the adjustment block is fixed. At this point, the pressure from one end of the drill bit will fully act on the surfaces of the balls on both sides. The curved surface of the ball bearings further disperses the force, while rolling and changing the direction of the drill bit. Therefore, breaking the ball bearings requires a continuous and stable force perpendicular to the reinforcement plate, further increasing the difficulty of breaking the ball bearings and improving the overall anti-drilling effect.
[0019] The second reinforcement component is set up through the reinforcement net and anti-drilling putty. When the drill bit drills into the grid gap, the quartz sand and metal debris particles in the putty will come into contact with the spiral groove of the drill bit. As the drill bit rotates, these hard particles will be embedded in the spiral groove, which not only increases the resistance to the drill bit rotation, causing the drill bit to be overloaded and overloaded to stop, but also the friction between the hard particles and the drill bit will accelerate the wear of the drill bit, causing the drill bit edge to be quickly blunted and lose the drilling ability, thereby further improving the overall anti-drilling effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.
[0021] Figure 1 This is a schematic structural diagram of a composite armored anti-theft door with a built-in anti-drilling alloy layer provided by an embodiment of the present invention;
[0022] Figure 2 This is a partial cross-sectional view of the structure of a composite armored anti-theft door with a built-in anti-drilling alloy layer provided by an embodiment of the present invention;
[0023] Figure 3 The invention provides a composite armored anti-theft door with a built-in anti-drilling alloy layer. Figure 2 A magnified view of the structure of the middle A area;
[0024] Figure 4 This is a schematic structural diagram of a first reinforcement component in a composite armored anti-theft door with a built-in anti-drilling alloy layer provided by an embodiment of the present invention;
[0025] Figure 5 The invention provides a composite armored anti-theft door with a built-in anti-drilling alloy layer. Figure 4 A magnified view of the structure of the middle B region;
[0026] Figure 6 This is a half-section view of the structure of the first reinforcement component in a composite armored anti-theft door with a built-in anti-drill alloy layer provided by an embodiment of the present invention;
[0027] Figure 7 The invention provides a composite armored anti-theft door with a built-in anti-drilling alloy layer. Figure 6 A magnified view of the structure of the middle C region;
[0028] Figure 8 This is a schematic structural diagram of the second reinforcement component in a composite armored anti-theft door with a built-in anti-drill alloy layer provided by an embodiment of the present invention.
[0029] In the figure: 1. Door frame; 11. Outer steel plate; 12. Fireproof layer; 13. Anti-drilling layer; 14. Inner steel plate; 2. First reinforcement component; 21. Reinforcement plate; 211. Limiting groove; 22. Spring; 23. Adjustment block; 231. Rolling groove; 232. Arc block; 233. Limiting block; 24. Ball; 3. Second reinforcement component; 31. First reinforcement net; 32. Second reinforcement net. DETAILED DESCRIPTION
[0030] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.
[0031] Example, refer to Figures 1-8 A composite armored anti-theft door with a built-in anti-drilling alloy layer comprises a door frame 1 and a first reinforcement component 2 arranged inside the door frame 1. The inner wall of the door frame 1 is sequentially mounted with an outer steel plate 11, an anti-drilling layer 13 and an inner steel plate 14;
[0032] The first reinforcement assembly 2 is disposed between the anti-drilling layer 13 and the inner steel plate 14 . The first reinforcement assembly 2 includes a reinforcement plate 21 , a plurality of adjustment blocks 23 , and balls 24 .
[0033] Furthermore, the side walls of the outer steel plate 11 and the inner steel plate 14 are fixedly connected to the inner wall of the door frame 1, and the outer steel plate 11 and the inner steel plate 14 are made of high-strength cold-rolled steel plates. The side walls of the anti-drilling layer 13 are fixedly connected to the inner wall of the door frame 1, and the anti-drilling layer 13 is made of high-strength alloy steel as a matrix and is quenched by adding tungsten, molybdenum and vanadium. One side of the anti-drilling layer 13 is bonded with a fireproof layer 12 bonded and fixed to the outer steel plate 11, and the fireproof layer 12 is made of fireproof rock wool material. The side walls of the reinforcing plate 21 are fixedly connected to the inner wall of the door frame 1, and the reinforcing plate 21 is made of high-strength cold-rolled steel plates. The reinforcing plate 21 is close to the A plurality of equidistant limit grooves 211 are provided on the outer wall of one side of the near anti-drilling layer 13. The lower end of the adjusting block 23 is fixedly connected to a limit block 233 that is slidably connected to the inner wall of the limit groove 211. A rolling groove 231 is provided on one side of the adjusting block 23. The inner wall of the rolling groove 231 is rollingly connected to a ball 24. The ball 24 is made of high-carbon chromium bearing steel. The inner walls at both ends of the limit groove 211 are fixedly connected to a spring 22 that abuts the side wall of the adjusting block 23 on one side. Four identical arc blocks 232 are fixedly connected to the outer walls of the four corners of the adjusting block 23. When the four adjusting blocks 23 are fitted together, the top of the combination of the four arc blocks 232 is a spherical surface.
[0034] It should be noted that the two outer steel plates 11 and the inner steel plate 14 made of high-strength cold-rolled steel plates have good strength and corrosion resistance, and can initially resist external physical impacts on the door body, thereby protecting the internal structure from damage. At the same time, the outer steel plate 11 and the inner steel plate 14 together constitute the supporting structure of the door frame 1, thereby enhancing the overall strength of the anti-theft door. The anti-drilling layer 13 adopts high-strength alloy steel as the matrix to provide toughness support to prevent brittle fracture of the alloy layer, and by adding a large amount of tungsten, molybdenum and vanadium elements, high-hardness carbides are formed during the quenching process and are evenly distributed in the matrix to hinder drill cutting. The ultra-high hardness of the anti-drilling layer 13 causes the drill bit edge to wear and blunt quickly, making it impossible to effectively cut materials. At the same time, the special crystal structure of the anti-drilling layer 13 hinders the advancement of the drill bit. The drill bit needs to continuously overcome the resistance of the carbide particles during rotation, resulting in a sharp increase in torque, further improving the overall anti-drilling effect.
[0035] A plurality of fitted balls 24 are provided on the first reinforcing component 2. When the drill bit drills in, the side wall of the drill bit contacts the surface of the balls 24. In the process of the drill bit rotating, the balls 24 roll and change the direction of the axial force of the drill bit, so that the angle of the drill bit is offset and cannot be concentrated on one point, thereby increasing the difficulty of drilling and improving the overall anti-drilling effect. At the same time, the balls 24 made of high-carbon chromium bearing steel will wear the drill bit in the reverse direction when in contact with the drill bit, shortening its life and further preventing it from cutting the balls 24. At the same time, when the drill bit drills into two balls 24 parallel to the limit grooves 211, the drill bit first First, the surface of the balls 24 is pressed against, and the balls 24 on both sides are pushed during the downward drilling process, so that they press against the multiple adjustment blocks 23 on both sides and then compress the springs 22 at both ends to move until the position of the adjustment blocks 23 is fixed. At this time, the pressure at one end of the drill bit will fully act on the surface of the balls 24 on both sides, and the curved surface of the balls 24 will further disperse the force received, and at the same time, it will roll to change the direction of the drill bit. Therefore, in order to break the balls 24, a continuous and stable force perpendicular to the reinforcing plate 21 is required, which further increases the difficulty of breaking the balls 24 and improves the overall anti-drilling effect.
[0036] Furthermore, a second reinforcement component 3 is installed between the first reinforcement component 2 and the inner steel plate 14. The second reinforcement component 3 is composed of a first reinforcement net 31 and a second reinforcement net 32. The first reinforcement net 31 and the second reinforcement net 32 are both made of a number of spring steel rods that are vertically fully welded and fixed. The spring steel rods between the first reinforcement net 31 and the second reinforcement net 32 are staggered, and the inner steel plate 14 and the reinforcement plate 21 are filled with anti-drilling putty to seal the second reinforcement component 3.
[0037] It should be noted that: the first reinforcing mesh 31 and the second reinforcing mesh 32 are welded into a grid structure using spring steel bars. When the drill bit acts on the reinforcing mesh, the local stress on the mesh will be quickly dispersed to the entire structure, thereby avoiding rapid penetration due to excessive local force, thereby improving the overall anti-drilling effect of the door body, and the anti-drilling putty filled in the grid gap is composed of a mixture of epoxy resin, quartz sand and metal debris. When the drill bit drills into the grid gap, the quartz sand and metal debris particles in the putty will contact the drill bit spiral groove. As the drill bit rotates, these hard particles will be embedded in the spiral groove, which not only increases the resistance to the drill bit rotation, causing the drill bit to be overloaded and overloaded and shut down, but also the friction between the hard particles and the drill bit will accelerate the wear of the drill bit, causing the drill bit edge to quickly blunt and lose drilling ability, thereby further improving the overall anti-drilling effect.
[0038] The working principle of this composite armored anti-theft door with built-in anti-drilling alloy layer:
[0039] The first reinforcing component 2 is provided with a plurality of fitted balls 24. When the drill bit drills in, the side wall of the drill bit contacts the surface of the balls 24, and the balls 24 roll during the rotation of the drill bit, changing the direction of the axial force of the drill bit, causing the angle of the drill bit to deviate and unable to be concentrated at one point, thereby increasing the difficulty of drilling and improving the overall anti-drilling effect. At the same time, the balls 24 made of high-carbon chromium bearing steel will wear the drill bit in the opposite direction when in contact with the drill bit, shortening its life and further preventing it from cutting the balls 24. At the same time, when the drill bit drills into two balls 24 parallel to the limit grooves 211, the drill bit first presses against the surface of the balls 24, and pushes the balls 24 on both sides during the downward drilling process, so that they press against the multiple adjustment blocks 23 on both sides, and then compress the springs 22 at both ends to move until the position of the adjustment blocks 23 is fixed. At this time, the pressure at one end of the drill bit will fully act on the surface of the balls 24 on both sides, and the curved surface of the balls 24 will further disperse the force received, while rolling. The direction of the drill bit is changed, so in order to break the ball 24, a continuous and stable force perpendicular to the reinforcing plate 21 is required, which further increases the difficulty of breaking the ball 24 and improves the overall anti-drilling effect. At the same time, the first reinforcing mesh 31 and the second reinforcing mesh 32 are welded into a grid structure using spring steel bars. When the drill bit acts on the reinforcing mesh, the local stress on the mesh body will be quickly dispersed to the entire structure, thereby avoiding rapid penetration due to excessive local force, thereby improving the overall anti-drilling effect of the door body. The anti-drilling putty filled in the grid gap is made of a mixture of epoxy resin, quartz sand and metal debris. When the drill bit drills into the grid gap, the quartz sand and metal debris particles in the putty will contact the drill bit spiral groove. As the drill bit rotates, these hard particles will be embedded in the spiral groove, which not only increases the resistance to the drill bit rotation, causing the drill bit to be overloaded and overloaded and shut down, but also the friction between the hard particles and the drill bit will accelerate the wear of the drill bit, causing the drill bit edge to quickly blunt and lose drilling ability, thereby further improving the overall anti-drilling effect.
[0040] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.
Claims
1. A composite armored anti-theft door with a built-in anti-drilling alloy layer, comprising a door frame (1) and a first reinforcement component (2) arranged inside the door frame (1), characterized in that: The inner wall of the door frame (1) is sequentially mounted with an outer steel plate (11), an anti-drilling layer (13) and an inner steel plate (14); The first reinforcement component (2) is arranged between the anti-drilling layer (13) and the inner steel plate (14), and the first reinforcement component (2) includes a reinforcement plate (21) and a plurality of adjustment blocks (23) and balls (24).
2. The composite armored anti-theft door with a built-in anti-drilling alloy layer according to claim 1, characterized in that: The side walls of the outer steel plate (11) and the inner steel plate (14) are fixedly connected to the inner wall of the door frame (1); the outer steel plate (11) and the inner steel plate (14) are made of high-strength cold-rolled steel plates.
3. The composite armored anti-theft door with a built-in anti-drilling alloy layer according to claim 2, characterized in that: The side wall of the anti-drilling layer (13) is fixedly connected to the inner wall of the door frame (1); the anti-drilling layer (13) is made of high-strength alloy steel as a matrix and is quenched by adding tungsten, molybdenum and vanadium; a fireproof layer (12) is bonded and fixed to the outer steel plate (11) on one side of the anti-drilling layer (13); and the fireproof layer (12) is made of fireproof rock wool material.
4. The composite armored anti-theft door with a built-in anti-drilling alloy layer according to claim 3, characterized in that: The side wall of the reinforcing plate (21) is fixedly connected to the inner wall of the door frame (1); the reinforcing plate (21) is made of high-strength cold-rolled steel plate; and a plurality of equally spaced limiting grooves (211) are provided on the outer wall of one side of the reinforcing plate (21) close to the anti-drilling layer (13).
5. The composite armored anti-theft door with a built-in anti-drilling alloy layer according to claim 4, characterized in that: The lower end of the regulating block (23) is fixedly connected to a limiting block (233) that is slidably connected to the inner wall of the limiting groove (211); a rolling groove (231) is opened on one side of the regulating block (23); a ball (24) is rollingly connected to the inner wall of the rolling groove (231); and the ball (24) is made of high-carbon chromium bearing steel.
6. The composite armored anti-theft door with a built-in anti-drilling alloy layer according to claim 5, characterized in that: The inner walls at both ends of the limiting groove (211) are fixedly connected with springs (22) that abut against the side wall of the adjustment block (23) on one side; the outer walls at the four corners of the adjustment block (23) are fixedly connected with four identical arc-shaped blocks (232); when the four adjustment blocks (23) are fitted together, the top of the combination of the four arc-shaped blocks (232) is a spherical surface.
7. The composite armored anti-theft door with a built-in anti-drilling alloy layer according to claim 1, characterized in that: A second reinforcement assembly (3) is installed between the first reinforcement assembly (2) and the inner steel plate (14), and the second reinforcement assembly (3) is composed of a first reinforcement net (31) and a second reinforcement net (32).
8. The composite armored anti-theft door with a built-in anti-drilling alloy layer according to claim 7, characterized in that: The first reinforcing net (31) and the second reinforcing net (32) are both formed by a plurality of spring steel bars fixed by vertical full welding, the spring steel bars between the first reinforcing net (31) and the second reinforcing net (32) are arranged in an alternating manner, and the space between the inner steel plate (14) and the reinforcing plate (21) is filled with anti-drilling putty for sealing the second reinforcing component (3).