Anti-theft door with steel-wood composite structure

Abstract

The utility model discloses an anti-theft door with a steel-wood composite structure, and relates to the field of anti-theft doors. At present, anti-theft doors with front steel and rear wood structures, which are launched from high-end markets, are mostly of cast aluminum door clamping edge structures, so that the manufacturing cost is high, the price is high, and the anti-theft doors are difficult to popularize for wider consumer groups. The fireproof door comprises a door frame, a door leaf, hinges and a lock, the door leaf comprises a front steel plate layer, a fireproof material layer, an inner steel plate layer and a wood plate layer from front to back, the periphery of the wood plate layer is clamped through edge clamping section bars, and the edge clamping section bars are fixedly connected to the inner steel plate layer; the side, located on the lock, of the front steel plate layer is provided with a protruding strip protruding backwards in a bent mode, the door frame is provided with a groove which is correspondingly formed in a bent mode and is concave backwards, and when the door leaf is closed, the protruding strip is buckled into the groove. Compared with a traditional cast aluminum door clamping edge structure, the manufacturing cost is greatly reduced, and consumer groups can be effectively expanded. The buckling structure of the convex strip and the groove increases the structure locking points between the door leaf and the door frame, and the safety is effectively improved.

Description

Technical Field

[0001] The utility model relates to the field of anti-theft doors, in particular to an anti-theft door with a steel-wood composite structure. Background Art

[0002] With the increasing diversity of modern home decor styles and consumers' emphasis on both security and aesthetics, traditional security door designs are no longer able to meet the diverse demands of the current market. Traditional security doors are mostly made of a single metal material. While they offer excellent security, they lack compatibility with indoor environments and are environmentally friendly. Furthermore, some high-end security doors with steel-front and wood-back structures, while combining metal and wood elements to enhance compatibility and environmental friendliness, often utilize cast aluminum door edging, resulting in high manufacturing costs and a high price tag, making them difficult to adopt for a wider consumer base. Utility Model Content

[0003] The technical problem to be solved and the technical task to be proposed by the present invention are to improve and perfect the existing technical solutions and provide a steel-wood composite structure security door with the purpose of reducing the manufacturing cost of the front steel and rear wood structure security door. To this end, the present invention adopts the following technical solutions.

[0004] A steel-wood composite structure security door includes a door frame and a door leaf. One side of the door leaf is connected to the door frame by a hinge, and the other side of the door leaf is locked to the door frame by a lock. The door frame is formed by bending steel plates. The door leaf includes, from front to back, a front steel plate layer, a fireproof material layer, an inner steel plate layer, and a wooden board layer. The wooden board layer is clamped on all sides by a card edge profile, and the card edge profile is connected and fixed to the inner steel plate layer. The wooden board layer is fixed to the inner steel plate layer by the card edge profile, forming an overall structure that is difficult to destroy, effectively achieving coordination with the indoor environment and environmental protection. Compared with the traditional cast aluminum door card edge structure, this structure is simpler and has greatly reduced manufacturing costs, allowing the steel-wood composite structure security door to be sold to more users with lower price tolerance and effectively expanding the consumer group.

[0005] As a preferred technical means: the edge profile is a profile with four strips along the same cross section. The edge profile includes a fixed plate portion, a side baffle portion, and an edge portion in terms of cross-sectional structure. The edge portion and the fixed plate portion are located at both ends of the side baffle portion in terms of cross-sectional structure and are arranged in parallel. Together with the side baffle portion, they form a slot. The fixed plate portion is fixed to the inner steel plate layer via multiple screws, and the outer periphery of the wooden board layer is snapped into the slot. The combination of the fixed plate portion, the side baffle portion, and the edge portion forms a stable slot structure. The outer periphery of the wooden board layer is snapped into the slot, and the fixed plate portion is fixed via multiple screws. Combined with the close fit between the wooden board layer and the inner steel plate layer, a stable and secure fixing structure for the wooden board layer is formed.

[0006] As a preferred technical means, the outer side surface of the side baffle is consistent with the outer side surface of the door leaf, thereby avoiding the abrupt feeling caused by the inconsistency between the outer side surface of the side baffle and the door leaf, making the side surface of the anti-theft door more concise and smooth visually.

[0007] As a preferred technical means, the aforementioned edge profile is made of aluminum alloy. While maintaining structural strength, aluminum alloy profiles can significantly reduce weight, making them easier to carry and install. The high strength of aluminum alloy also ensures the stability and durability of the edge profile. Aluminum alloy profiles also have excellent corrosion resistance, making them resistant to a variety of harsh environments such as moisture, acidity, and alkali. This makes the edge profile less susceptible to rust and corrosion during long-term use, thereby extending the service life of the security door. Aluminum alloy profiles also have excellent plasticity and processability, and their relatively low melting point facilitates profile forming.

[0008] As a preferred technical approach, the front steel plate layer is bent on one side of the lock to form a rearward-projecting ridge, and the door frame is provided with a correspondingly bent, rearward-concave groove. When the door leaf is closed, the ridge snaps into the groove. This interlocking structure of the ridge and groove increases the structural locking points between the door leaf and the door frame, making it more difficult to pry open when closed, effectively improving the security of the security door, making it more difficult for criminals to damage the door leaf, and providing better security.

[0009] As a preferred technical approach, the inner steel sheet is bent forward on both sides and at the bottom, then joined to the rear side of the front steel sheet via the bent portion. This, combined with a cover member located at the top of the door leaf, forms a closed area, within which the fireproof material layer is disposed. The bent inner steel sheet is joined to the front steel sheet, creating a more robust structure. The fireproof material layer within this closed area enhances its impact and pressure resistance, isolates fire sources from direct contact with the internal structure of the door leaf, and thus significantly improves the fireproofing performance of the security door. The fireproof material layer provides excellent fire isolation and thermal insulation properties.

[0010] As a preferred technical approach, the aforementioned folded portion bends outward on one side of the lock and aligns with the outward extension of the front steel plate. It also bends inward on both the hinge side and the bottom. Because the front steel plate has a ridge on the outward extension of the lock, the steel plate extends further laterally in this area. The folded portion bends outward and aligns with the extension, providing greater structural support strength and making the structure more stable, reliable, and secure. The remaining extensions are relatively short, and the inward bend provides a stable and secure support structure.

[0011] As a preferred technical approach, the cover member is a bent steel plate member. The front and rear sides of the cover member are bent downward 90 degrees to abut against the rear side of the front steel plate layer and the front side of the inner steel plate layer, respectively. The inner steel plate layer is bent forward at its upper end to abut against the upper end of the cover member. This facilitates assembly and disassembly of the cover member at the top of the door leaf, as well as the filling of the door leaf with fireproof material, facilitating manufacturing and maintenance. Furthermore, the cover member abuts against the front and inner steel plates to form a closed structure, ensuring high structural strength and sealing off the inside and outside, preventing the intrusion of dust, moisture, and other impurities, and protecting the interior of the door leaf from the external environment.

[0012] As a preferred technical approach, the front steel plate layer has bends on its four outer sides (top, bottom, left, and right) that face the four sides of the door leaf. The three bends on the left, right, and bottom serve as closed bends that abut against the three sides of the door leaf, while a gap is provided between the downward bend at the top and the cover. The gap at the top facilitates disassembly for maintenance, while the closed bends in the other three directions abut against the three sides of the door leaf, effectively providing support and positioning during assembly, giving the door leaf greater structural strength.

[0013] Beneficial effects: The wooden layer is fixed to the inner steel layer by the card edge profile, forming an overall structure that is difficult to be destroyed, effectively achieving coordination with the indoor environment and environmental protection. Compared with the traditional cast aluminum door card edge structure, this structure is simpler and the manufacturing cost is greatly reduced, so that the steel-wood composite structure anti-theft door can be sold to more users with lower price tolerance, which can effectively expand the consumer group; the door leaf and the door frame increase the structural locking points between the door leaf and the door frame on the lock side through the buckling structure of the convex strip and the groove, making the door leaf more difficult to be pried after closing, effectively improving the anti-theft performance of the anti-theft door. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a horizontal cross-sectional schematic diagram of the utility model.

[0015] Figure 2 This utility model Figure 1 Enlarged schematic diagram of part A in the middle.

[0016] Figure 3 This utility model Figure 1 Enlarged schematic diagram of part B in the middle.

[0017] Figure 4 This is a schematic diagram of the connection between the clamping edge profile and the inner steel plate layer in the utility model.

[0018] Figure 5 It is a vertical cross-sectional schematic diagram of the utility model.

[0019] Figure 6 This utility model Figure 5 Enlarged schematic diagram of part C in the middle.

[0020] Figure 7 This utility model Figure 5 Enlarged schematic diagram of part D in the middle.

[0021] In the figure: 1. door frame; 2. door leaf; 3. hinge; 4. lock; 101. groove; 201. front steel plate layer; 20101. ridge; 20102. extension portion; 20103. closed bend; 20104. downward bend; 202. fireproof material layer; 203. inner steel plate layer; 20301. outward bend; 20302. inward bend; 20303. forward bend; 204. wooden board layer; 205. edge profile; 20501. fixing plate portion; 20502. side baffle portion; 20503. edge portion; 20504. slot; 206. screw; 207. cover member. DETAILED DESCRIPTION

[0022] The technical solution of the present invention is further described in detail below with reference to the accompanying drawings.

[0023] In the description of the present invention, it should be understood that terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Since the embodiments disclosed in the present invention can be set in different directions, these terms indicating directions are only for illustration and should not be regarded as limitations. For example, "up" and "down" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

[0024] like Figure 1-7 As shown, a steel-wood composite anti-theft door includes a door frame 1 and a door leaf 2. One side of the door leaf 2 is connected to the door frame 1 via a hinge 3, and the other side of the door leaf 2 is locked to the door frame 1 via a lock 4. The door frame 1 is formed by bending steel plates. The door leaf 2 includes, from front to back, a front steel plate layer 201, a fireproof material layer 202, an inner steel plate layer 203, and a wooden layer 204. The wooden layer 204 is clamped on all sides by a clamping edge profile 205, which is connected and fixed to the inner steel plate layer 203. The front steel plate layer 201 is bent to one side of the lock 4 to form a rearward-protruding ridge 20101. The door frame 1 is provided with a corresponding rearward-concave groove 101 formed by the bending. When the door leaf 2 is closed, the ridge 20101 snaps into the groove 101.

[0025] In order to achieve a stable fixing structure of the wood board layer 204, the edge profile 205 is a profile with the same cross section along four sides, such as Figure 4 As shown, the edge profile 205 includes a fixed plate portion 20501, a side baffle portion 20502 and a edge portion 20503 in cross-sectional structure. The edge portion 20503 and the fixed plate portion 20501 are respectively located at the two ends of the side baffle portion 20502 in cross-sectional structure and are arranged in parallel. They are combined with the side baffle portion 20502 to form a slot 20504. The fixed plate portion 20501 is connected and fixed to the inner steel plate layer 203 by a plurality of screws 206, and the outer periphery of the wooden board layer 204 is snapped into the slot 20504. By combining the fixed plate portion 20501, the side baffle portion 20502 and the clamping edge portion 20503, a stable clamping slot 20504 structure is formed. The outer periphery of the wooden board layer 204 is clamped into the clamping slot 20504, and the fixed plate portion 20501 is fixed by multiple screws 206. Combined with the close fitting treatment between the wooden board layer 204 and the inner steel plate layer 203, a stable and firm fixing structure of the wooden board layer 204 is formed.

[0026] In order to make the side of the security door more concise and smooth, the outer side of the side baffle portion 20502 is consistent with the outer side of the door leaf 2. The abrupt feeling caused by the inconsistency between the side baffle portion 20502 and the outer side of the door leaf 2 is avoided, making the side of the security door more concise and smooth visually.

[0027] To improve cost-effectiveness, the card edge profile 205 is made of aluminum alloy. While ensuring structural strength, the aluminum alloy profile can significantly reduce weight, making it easier to carry and install. The high strength of aluminum alloy also ensures the stability and durability of the card edge profile 205. Aluminum alloy profiles have excellent corrosion resistance and can withstand erosion from various harsh environments such as moisture, acid and alkali. This makes the card edge profile 205 less likely to rust and corrode during long-term use, thereby extending the service life of the security door and reducing maintenance costs. Aluminum alloy profiles have good plasticity and processing properties, and a relatively low melting point, which facilitates profile forming and has a good cost-effectiveness.

[0028] To achieve a strong structure, the inner steel plate layer 203 is bent forward 20303 on both sides and at the bottom, and then adhered to the rear side of the front steel plate layer 201 through the adhered bent portion. Combined with the cover member 207 provided on the top of the door leaf 2, a closed area is formed, and the fireproof material layer 202 is provided within the closed area. The inner steel plate layer 203 is bent and adhered to the front steel plate layer 201, forming a more solid structure. The fireproof material layer 202 is provided in the closed area within the inner steel plate layer 203, which improves its impact and pressure resistance, isolates the fire source from direct contact with the internal structure of the door leaf 2, and thus significantly improves the fireproof performance of the security door. The fireproof material layer 202 has good fire isolation and heat insulation properties.

[0029] To achieve a more secure structure, the folded portion on one side of the lock 4 is bent outward 20301 and folds inward with the outward extension 20102 of the front steel plate layer 201. The folded portion on both the hinge 3 side and the bottom is bent inward 20302. Because the outward extension 20102 of the front steel plate layer 201 on the lock 4 side is provided with a ridge 20101, the steel plate at this location extends further laterally. The folded portion bends outward 20301 and folds inward with the extension 20102, providing greater structural support strength and making the structure more secure, stable, and reliable. The extensions in other directions are relatively short, and the inward bend 20302 provides a stable and secure support structure.

[0030] In order to ensure the structural strength and protect the interior of the door leaf 2 from the external environment, the cover member 207 is a steel plate bent and formed member, such as Figure 7 As shown, the front and rear sides of the cover member 207 are bent downward 90 degrees to respectively abut the rear side of the front steel plate layer 201 and the front side of the inner steel plate layer 203. The inner steel plate layer 203 is provided with a forward bend 20303 at the upper end to abut the upper end of the cover member 207. On the one hand, the cover member 207 on the top of the door leaf 2 is easy to disassemble and install, and the door leaf 2 is filled with fireproof material, which is convenient for manufacturing and maintenance. On the other hand, the cover member 207 is affixed to the front steel plate layer 201 and the inner steel plate layer 203 to form a closed structure, which can ensure high structural strength and seal the inside and outside, preventing the intrusion of dust, water vapor and other impurities, and protecting the interior of the door leaf 2 from the influence of the external environment.

[0031] To enhance the structural strength of the door leaf 2, the front steel plate layer 201 is provided with bends on its four outer sides (top, bottom, left, and right) that face the four sides of the door leaf 2. Three of these, on the left, right, and bottom sides, serve as closed bends 20103 that abut against the three sides of the door leaf 2. A gap is provided between the downward bend 20104 at the top and the cover member 207. The gap at the top facilitates disassembly for maintenance. The closed bends 20103 in the other three directions abut against the three sides of the door leaf 2, giving the door leaf 2 greater structural strength and providing positioning during assembly.

[0032] During assembly, the four layers of the structure—front steel plate layer 201, fireproof material layer 202, inner steel plate layer 203, and wood panel layer 204—are stacked in sequence and tightly bonded together through a special process. The fireproof material layer 202 is located in the closed area between the front steel plate layer 201 and the inner steel plate layer 203, providing excellent fireproof and heat-insulating properties. The wood panel layer 204, located inside the inner steel plate layer 203, is made of environmentally friendly wood and is edge-sealed with aluminum alloy edge profiles 205 and securely fixed to the inner steel plate layer 203. The surface of the wood panel layer 204 can be decorated with various finishes, such as spraying or engraving, to achieve harmony and consistency with the indoor environment and meet the user's actual needs. The lock 4 can be an advanced electronic lock with multiple unlocking methods, such as fingerprint recognition and password input, enhancing the security of the anti-theft door. Furthermore, the door lock can also be equipped with a remote control function, allowing users to control the door's opening and closing at any time. The hinge 3 is made of high-strength stainless steel, offering excellent load-bearing capacity and durability.

[0033] The utility model fixes the wooden layer 204 on the inner steel plate layer 203 through the card edge profile 205, forming an overall structure that is difficult to be destroyed, effectively achieving coordination with the indoor environment and environmental protection, with a simpler structure, greatly reducing manufacturing costs, and effectively expanding the consumer group; the door leaf 2 and the door frame 1 increase the structural locking points between the door leaf 2 and the door frame 1 on one side of the lock 4 through the snap-fit ​​structure of the convex strip 20101 and the groove 101, making the door leaf 2 more difficult to be pried after closing, effectively improving the anti-theft performance of the anti-theft door, increasing the difficulty for criminals to destroy the door leaf 2, and providing better security.

[0034] above Figure 1-7 The steel-wood composite structure anti-theft door shown is a specific embodiment of the present invention, which has embodied the substantial characteristics and progress of the present invention. According to actual use needs and under the guidance of the present invention, equivalent modifications in shape, structure, etc. can be made to it, which are all within the scope of protection of this scheme.

Claims

1. A steel-wood composite security door, comprising a door frame and a door leaf, wherein one side of the door leaf is connected to the door frame by a hinge, and the other side of the door leaf is locked to the door frame by a lock. The door frame is formed by bending steel plates, and is characterized by: The door leaf comprises a front steel plate layer, a fireproof material layer, an inner steel plate layer and a wooden board layer from front to back. The wooden board layer is clamped on all sides by a clamping edge profile, and the clamping edge profile is connected and fixed to the inner steel plate layer.

2. The steel-wood composite structure anti-theft door according to claim 1, characterized in that: The described card edge profile is a profile with the same cross-section and four strips along the edges. The described card edge profile includes a fixed plate portion, a side baffle portion and a card edge portion in the cross-sectional structure. The card edge portion and the fixed plate portion are respectively located at the two ends of the side baffle portion in the cross-sectional structure and are arranged in parallel. They are combined with the side baffle portion to form a card slot. The described fixed plate portion is fixed to the inner steel plate layer by a plurality of screws, and the outer periphery of the described wooden board layer is clipped into the card slot.

3. The steel-wood composite structure anti-theft door according to claim 2, characterized in that: The outer side surface of the side baffle portion is consistent with the outer side surface of the door leaf.

4. The steel-wood composite structure anti-theft door according to claim 3, characterized in that: The card edge profile is made of aluminum alloy profile.

5. The steel-wood composite structure anti-theft door according to claim 3, characterized in that: The front steel plate layer is located on one side of the lock and is bent to form a convex strip protruding backwards. The door frame is provided with a correspondingly bent and formed groove concave backwards. When the door leaf is closed, the convex strip is buckled into the groove.

6. The steel-wood composite structure anti-theft door according to claim 5, characterized in that: The inner steel plate layer is bent forward on the left and right sides and the bottom, and then adhered to the rear side of the front steel plate layer through the bonding bending part, and then combined with the covering piece set on the top of the door leaf to form a closed area, and the fireproof material layer is arranged in the closed area.

7. The steel-wood composite structure anti-theft door according to claim 6, characterized in that: The fitting bent portion is bent outward on one side of the lock and fits with the outward extension of the front steel plate layer. The fitting bent portion is bent inward on both the hinge side and the bottom.

8. The steel-wood composite structure anti-theft door according to claim 7, characterized in that: The cover part is a steel plate bent part, and the front and rear sides of the cover part are bent downward 90 degrees to respectively fit the rear side of the front steel plate layer and the front side of the inner steel plate layer. The inner steel plate layer is bent forward at the upper end to fit the upper end of the cover part.

9. The steel-wood composite structure anti-theft door according to claim 8, characterized in that: The front steel plate layer is provided with bends on the four outer sides of the upper, lower, left and right sides facing the four sides of the door leaf. Among them, the three left, right and bottom parts serve as closed bends and respectively offset against the three sides of the door leaf. There is a gap between the downward bend at the top and the cover part.

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