A steel-aluminum composite armored entrance door

Abstract

This utility model discloses a steel-aluminum composite armored entrance door, including a door frame. The door frame includes vertical frames fixed to the left and right sides of a door opening in the wall. A horizontal beam is fixed between the left and right vertical frames. The horizontal beam and the vertical frames combine to form an installation space for installing a door panel. The door panel is connected to one of the vertical frames via hinges. Reinforcing members are fixed to the edges of the door panel. The reinforcing members are made of bent steel plates with protruding front and rear sides. A first groove is formed by a recess in the middle section of the reinforcing member. A fastening element is fastened to the outside of the reinforcing member, and the reinforcing member supports the fastening element. A second groove is formed by a recess in the middle section of the fastening element, which engages with the first groove of the reinforcing member. A fastening cover is fastened inside the second groove. This steel-aluminum composite armored entrance door has high strength.

Description

Technical Field

[0001] This utility model belongs to the field of armored door technology, and in particular relates to a steel-aluminum composite structure armored entrance door. Background Technology

[0002] Traditional armored doors typically use aluminum alloy profiles for edge banding around the door panels. This choice is primarily based on the material properties of aluminum alloy. Aluminum alloy profiles offer high aesthetic appeal, and their surfaces can be processed with various techniques such as anodizing and powder coating to achieve rich colors and textures, perfectly matching the aesthetic demands of modern architectural decoration. Furthermore, the excellent plasticity of aluminum alloy allows the profiles to be processed into various complex cross-sectional shapes, meeting the edge banding requirements of different door types while also enabling detailed designs such as decorative lines. However, this material has significant shortcomings in mechanical properties. Aluminum's Vickers hardness is approximately 15-20 HV, significantly lower than steel's 120-250 HV. In practical applications, this hardness deficiency means that when the door panel is subjected to external impact, the aluminum alloy edge banding is prone to permanent deformation. For entrance doors that need to withstand high wind pressure, the structural strength of the aluminum alloy edge banding often fails to meet wind pressure resistance requirements.

[0003] Patent application CN112854987A discloses an aluminum-steel inorganic composite fireproof door frame comprising a main frame strip, steel lining, blocks, fire-resistant expansion strips, and a decorative film layer. The frame includes a horizontal main frame strip and horizontal main frame strips on the left and right sides, or a horizontal main frame strip and horizontal main frame strips on the top and bottom, and a vertical main frame strip on the left and right sides, located between the door leaf and the wall within the door opening. The main frame strip is a hollow structure with a rectangular cross-section, with adjacent ends connected by angle brackets to form the main frame. A boss protrudes outward on the outer side of the main frame corresponding to the door leaf, thus forming a groove on the outer side. Each main frame strip has a steel lining inside its cavity, and the corresponding ends of adjacent steel linings are connected together from the outside of the main frame by screws using steel angle brackets. Each outer part of the main frame strip is equipped with a stop block, which is an L-shaped plate structure composed of a connecting surface and a stop surface. The connecting surface is attached to the outer part of the groove on the main frame strip and is connected to the steel lining by self-tapping screws passing through the connecting surface and the outer side of the main frame strip in sequence. At the same time, expansion screws are used to fix it to the wall by passing through the connecting surface, the outer side of the main frame strip, the steel lining, and the inner side of the main frame strip in sequence. The stop surface is located near the edge of the door leaf to stop the door leaf. A fire-resistant expansion strip is installed in the groove between the stop block and the boss on the main frame, close to the boss. The decorative film layer covers the inner end face of the main frame strip, the boss, and the fire-resistant expansion strip, thus forming a complete decorative surface on the visible surface of the main frame strip, which makes the door frame more durable. However, its simple structure cannot effectively improve the strength of the door. Therefore, it is necessary to provide a steel-aluminum composite structure armored entrance door to solve the above problems. Summary of the Invention

[0004] The purpose of this utility model is to design a high-strength steel-aluminum composite armored entrance door to overcome the shortcomings of the above-mentioned technologies.

[0005] To address the aforementioned problems, this utility model proposes a steel-aluminum composite armored entrance door, comprising a door frame. The door frame includes vertical frames fixed to the left and right sides of a door opening in the wall. A horizontal beam is fixed between the left and right vertical frames. The horizontal beam and the vertical frames combine to form an installation space for installing a door panel. The door panel is connected to one of the vertical frames via hinges. A reinforcing member is fixed to the edge of the door panel. The reinforcing member includes a main body, with both ends of the main body bent to the same side to form a first bent portion and a second bent portion. A first groove is formed between the first bent portion and the second bent portion, allowing the reinforcing member to fit snugly and be fixed to the side of the door panel, increasing its strength. A fastening element is fastened to the outside of the reinforcing member, and the reinforcing member supports the fastening element.

[0006] As a further solution of this utility model, the fastening component includes a first fastening strip and a second fastening strip. The inner side of the first fastening strip and the outer side of the second fastening strip are bent in the same direction to form a first bending plate and a second bending plate, respectively. The first bending plate and the second bending plate cooperate to form a second groove that engages with the first groove of the reinforcement component. A fastening cover is fastened in the second groove.

[0007] As a further solution of this utility model, the outer end of the second bent portion of the reinforcement further extends outward to form an extension plate. The extension plate is bent toward the door frame side to form a fixing groove. The outer side of the first buckle and the inner side of the second buckle are bent to form a first stop bar and a second stop bar, respectively. The first stop bar wraps around the inner side of the door panel, and the second stop bar wraps around the edge of the extension plate of the reinforcement.

[0008] As a further solution of this utility model, a gap is left between the first bending plate and the second bending plate for bolts to pass through. The bolts pass through the gap and through the second slot to screw the reinforcement to the door panel. The fixing slots of the reinforcement are all screwed to the door panel by bolts. The first bending plate and the second bending plate are both screwed to the reinforcement and the door panel by screws.

[0009] As a further solution of this utility model, the first and second fastening strips are respectively provided with a first sliding strip and a second sliding strip arranged along the length direction of the fastening member in the fastening surfaces that contact the fastening cover, and the fastening cover has a sliding groove that cooperates with the sliding strip.

[0010] As a further solution of this utility model, the inside of the cover has rows of strip-shaped holes, which serve to provide sound and heat insulation.

[0011] As a further solution of this utility model, the door panel includes a steel core, and an interior decorative panel and an exterior decorative panel are respectively attached to the inner and outer sides of the steel core for decorating the door panel and improving its aesthetics. The exterior decorative panel extends towards the door frame to the extension plate of the reinforcement and abuts against the second stop strip of the second snap strip to prevent outdoor dust from entering the room.

[0012] As a further solution of this utility model, the cross-section of the beam and the vertical frame are the same size and both are steel frames.

[0013] As a further solution of this utility model, the outer sides of the crossbeam and the vertical frame are both concave, forming a cavity with the fastener. The front and rear sides of the fastener are sealed with adhesive strips to block the cavity formed between it and the crossbeam and the vertical frame, thereby improving the sealing performance of the door and playing a role in heat insulation.

[0014] In summary, this utility model has at least one of the following beneficial technical effects: Firstly, this utility model describes a steel-aluminum composite structure armored entrance door, which describes that the door panel edge is fixed with a reinforcing member, the reinforcing member is a steel plate bent into a shape with protrusions on the front and back sides, the middle section of the reinforcing member is concave to form a first groove, and a fastening member is fastened to the outside of the reinforcing member, the reinforcing member supports the fastening member, and improves the strength of the door.

[0015] Secondly, this utility model describes a steel-aluminum composite structure armored entrance door, which describes that the door panel includes a steel core, and the inner and outer sides of the steel core are respectively attached with an interior decorative panel and an exterior decorative panel for decorating the door panel and improving the aesthetics of the door panel. The exterior decorative panel extends towards the door frame to the extension plate of the reinforcement and abuts against the second stop strip of the fastener to prevent dust from the outside from entering the room.

[0016] Thirdly, this utility model describes a steel-aluminum composite structure armored entrance door, which describes that the fasteners are assembled in two sections, reducing the assembly difficulty and improving the assembly efficiency. The optimized process operation difficulty is reduced and can be standardized for production, which is more conducive to mass production and large-scale production. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a steel-aluminum composite armored entrance door according to this utility model; Figure 2 This utility model relates to a steel-aluminum composite structure armored entrance door. Figure 1 A schematic diagram of the cross-section at point A; Figure 3 This utility model relates to a steel-aluminum composite structure armored entrance door. Figure 1 A schematic diagram of the cross-section at point B; Figure 4This is a schematic diagram of the reinforcement structure of a steel-aluminum composite armored entrance door according to this utility model; Figure 5 This is a schematic diagram of the fastening structure of a steel-aluminum composite armored entrance door according to this utility model; Figure 6 This is a schematic diagram of the cover structure of a steel-aluminum composite armored entrance door according to this utility model.

[0018] Reference numerals: 1. Door frame; 101. Horizontal beam; 102. Vertical frame; 2. Door panel; 201. Interior decorative panel; 202. Steel core; 203. Exterior decorative panel; 3. Cavity; 4. Gap; 5. Fastener; 51. First fastener strip; 52. Second fastener strip; 501. First stop strip; 502. First slide strip; 503. Second groove; 504. Second stop strip; 505. First bending plate; 506. Second bending plate; 507. Second slide strip; 6. Reinforcing component; 601. Extension plate; 602. First groove; 603. Main body; 604. First bend; 605. Second bend; 7. Cover; 701. Slide groove; 702. Strip hole. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the present utility model.

[0020] like Figures 1 to 6 As shown in the figure, the steel-aluminum composite armored entrance door described in this embodiment includes a door frame 1, which includes a vertical frame 102. The vertical frame 102 is fixed to the left and right sides of the door opening in the wall. A horizontal beam 101 is fixed between the left and right vertical frames 102. The horizontal beam 101 and the vertical frame 102 combine to form an installation space for installing a door panel 2. The door panel 2 is connected to one of the vertical frames 102 by a hinge. A reinforcing member 6 is fixed to the edge of the door panel 2. The reinforcing member 6 includes a main body 603. The two ends of the main body 603 are bent to the same side to form a first bending part 604 and a second bending part 605. A first groove 602 is formed between the first bending part 604 and the second bending part 605, so that the reinforcing member 6 fits and is fixed to the side of the door panel 2 to increase the strength. A fastening member 5 is fastened to the outside of the reinforcing member 6, and the reinforcing member 6 supports the fastening member 5.

[0021] The fastening component 5 includes a first fastening strip 51 and a second fastening strip 52. The inner side of the first fastening strip 51 and the outer side of the second fastening strip 52 are bent in the same direction to form a first bending plate 505 and a second bending plate 506, respectively. The first bending plate 505 and the second bending plate 506 cooperate to form a second slot 503 that engages with the first slot 602 of the reinforcement component 6. A fastening cover 7 is fastened in the second slot 503.

[0022] The outer end of the second bent portion 605 of the reinforcement 6 further extends outward to form an extension plate 601. The extension plate 601 is bent toward the door frame 1 to form a fixing groove. The outer side of the first buckle 51 and the inner side of the second buckle 52 are bent to form a first stop bar 501 and a second stop bar 504, respectively. The first stop bar 501 wraps around the inner side of the door panel 2, and the second stop bar 504 wraps around the edge of the extension plate 601 of the reinforcement 6.

[0023] A gap 4 is provided between the first bending plate 505 and the second bending plate 506 for bolts to pass through. The bolts pass through the gap 4 and through the second slot 503 to screw the reinforcement 6 to the door panel 2. The fixing slots of the reinforcement 6 are all screwed to the door panel 2 by bolts. The first bending plate 505 and the second bending plate 506 are both screwed to the reinforcement 6 and the door panel 2 by screws.

[0024] The first fastener 51 and the second fastener 52 are respectively provided with a first slide bar 502 and a second slide bar 507 arranged along the length direction of the fastener 5 in the fastening surface that contacts the cover 7. The cover 7 has a slide groove 701 that is connected to the slide bar.

[0025] The cover 7 has rows of strip-shaped holes 702 inside, which serve to provide sound and heat insulation.

[0026] The door panel 2 includes a steel core 202. The inner and outer sides of the steel core 202 are respectively attached with an interior decorative panel 201 and an exterior decorative panel 203 for decorating the door panel 2 and improving its aesthetics. The exterior decorative panel 203 extends towards the door frame 1 to the extension plate 601 of the reinforcement 6 and abuts against the second stop 504 of the second buckle 52 to prevent dust from the outside from entering the room.

[0027] The cross-sections of the horizontal beam 101 and the vertical frame 102 are the same size and shape, and both are steel frames.

[0028] The outer sides of the crossbeam 101 and the vertical frame 102 are both concave, forming a cavity 3 with the fastener 5. The fastener 5 is sealed with adhesive strips on both the front and rear sides to block the cavity 3 formed between it and the crossbeam 101 and the vertical frame 102, thereby improving the sealing performance of the door and playing a role in heat insulation.

[0029] The working principle of the steel-aluminum composite armored entrance door provided by this utility model is as follows: When the door panel 2 is subjected to external impact, the first and second bending parts of the reinforcement 6 provide support and buffer for the fastener 5, thereby increasing the strength of the door panel 2 and making it less prone to deformation. The fastener 5 is assembled in two sections, which reduces the assembly difficulty and improves the assembly efficiency.

[0030] This utility model is not limited to the above-described preferred embodiments. Anyone can derive other forms of products under the guidance of this utility model. However, regardless of any changes made in their shape or structure, any technical solution that is the same as or similar to this application falls within the protection scope of this utility model.

Claims

1. A steel-aluminum composite armored entrance door, comprising a door frame (1), wherein the door frame (1) comprises vertical frames (102), the vertical frames (102) are fixed on the left and right sides of a door opening in a wall, and a horizontal beam (101) is fixed between the left and right vertical frames (102), the horizontal beam (101) and the vertical frames (102) together form an installation space for installing a door panel (2), the door panel (2) being connected to one of the vertical frames (102) by a hinge, characterized in that, The door panel (2) is fixed with a reinforcement member (6) at its edge. The reinforcement member includes a main body (603). The two ends of the main body (603) are bent to the same side to form a first bending part (604) and a second bending part (605). A first groove (602) is formed between the first bending part (604) and the second bending part (605) so that the reinforcement member (6) fits and is fixed to the side of the door panel. A fastener (5) is fastened to the outside of the reinforcement member (6). The reinforcement member (6) supports the fastener (5).

2. The steel-aluminum composite armored entrance door according to claim 1, characterized in that: The fastening component (5) includes a first fastening strip (51) and a second fastening strip (52). The inner side of the first fastening strip (51) and the outer side of the second fastening strip (52) are bent in the same direction to form a first bending plate (505) and a second bending plate (506) respectively. The first bending plate (505) and the second bending plate (506) cooperate to form a second slot (503) that engages with the first slot (602) of the reinforcement component (6). A fastening cover (7) is fastened in the second slot (503).

3. The steel-aluminum composite armored entrance door according to claim 2, characterized in that: The second bend (605) of the reinforcement (6) extends outward to form an extension plate (601). The extension plate (601) bends toward the door frame (1) to form a fixing groove. The outer side of the first buckle (51) and the inner side of the second buckle (52) are bent to form a first stop (501) and a second stop (504). The first stop (501) wraps around the inner side of the door panel (2), and the second stop (504) wraps around the edge of the extension plate (601) of the reinforcement (6).

4. The steel-aluminum composite armored entrance door according to claim 3, characterized in that, A gap (4) is left between the first bending plate (505) and the second bending plate (506) for bolts to pass through. The bolts pass through the gap (4) and through the second slot (503) to screw the reinforcement (6) to the door panel (2). The fixing slots of the reinforcement (6) are all screwed to the door panel (2) by bolts. The first bending plate (505) and the second bending plate (506) are all screwed to the reinforcement (6) and the door panel (2) by screws.

5. A steel-aluminum composite armored entrance door according to claim 2 or 4, characterized in that, The first fastener (51) and the second fastener (52) are respectively provided with a first slide bar (502) and a second slide bar (507) arranged along the length direction of the fastener (5) in the fastening surfaces that contact the fastener cover (7). The fastener cover (7) has a slide groove (701) that is connected to the slide bar.

6. A steel-aluminum composite armored entrance door according to claim 5, characterized in that, The cover (7) has rows of strip holes (702) inside, which serve to provide sound and heat insulation.

7. A steel-aluminum composite armored entrance door according to claim 3 or 6, characterized in that, The door panel (2) includes a steel core (202), and an interior decorative panel (201) and an exterior decorative panel (203) are respectively attached to the inner and outer sides of the steel core (202) for decorating the door panel (2). The exterior decorative panel (203) extends to the extension plate (601) of the reinforcement (6) at the door frame (1) and abuts against the second stop (504) of the second buckle (52).

8. A steel-aluminum composite armored entrance door according to claim 7, characterized in that, The cross-sections of the horizontal beam (101) and the vertical frame (102) are the same size and shape, and both are steel frames.

9. A steel-aluminum composite armored entrance door according to claim 8, characterized in that, The outer sides of the crossbeam (101) and the vertical frame (102) are both concave, forming a cavity (3) between them and the fastener (5). The fastener (5) is sealed with adhesive strips on both the front and rear sides to seal the cavity (3) between it and the crossbeam (101) and the vertical frame (102).

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