Steel-wood entry double door

Abstract

The utility model discloses a kind of steel wood double-leaf door, it includes door frame and two door leaves, the door frame outside is connected with wall body through expansion bolt, two the door leaf is connected with the door frame inside through multiple concealed hinges, the both sides of the expansion bolt are provided with reinforcing rib, the both ends of the reinforcing rib are connected with the door frame and the wall body respectively, the both ends of the door leaf are provided with edge seal, the edge seal is frame structure, the edge seal is connected with the door leaf through fixed bolt, the first end of the concealed hinge is connected with the door frame, the second end of the concealed hinge is connected with corresponding edge seal. The utility model can effectively share the force suffered by expansion bolt by setting reinforcing rib, simultaneously, by setting the edge seal of frame structure, combined with door leaf main body, provide stable, reliable connection foundation for concealed hinge, the edge seal of frame structure can scatter dynamic load to multiple connection points, form a whole stress system.

Description

Technical Field

[0001] This utility model relates to the field of entrance door technology, specifically to a steel and wood double entrance door. Background Technology

[0002] A double-leaf entrance door is a type of entrance door consisting of two opposing doors. With its grand and beautiful appearance, open space, and flexible functionality, it is widely used in villas, large apartments, high-end residences, and commercial spaces.

[0003] Existing double doors are divided into solid wood and composite structures. Composite structures mainly consist of a door frame and a door leaf, with the door leaf including a core, the outer surface of which is covered with a decorative material. Among them, steel-wood composite doors are a new type of door made by combining a one-time pressed steel plate with a solid wood frame and internal filler. Their door frames are generally connected to the wall using expansion bolts. Because the door frame needs to withstand the dynamic load of frequent opening and closing (such as the rebound force of spring hinges), ordinary expansion bolts have poor fatigue resistance and are prone to loosening after long-term use. Utility Model Content

[0004] The purpose of this utility model is to provide a steel-wood double-leaf entrance door to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, this utility model provides a steel-wood double-leaf entrance door, which includes a door frame and two door leaves. The outer side of the door frame is connected to the wall by expansion bolts. Both door leaves are connected to the inner side of the door frame by multiple concealed hinges. Reinforcing ribs are provided on both sides of the expansion bolts. The two ends of the reinforcing ribs are connected to the door frame and the wall, respectively. Both ends of the door leaves are provided with edge banding. The edge banding has a frame structure and is connected to the door leaves by fixing bolts. The first end of the concealed hinge is connected to the door frame, and the second end of the concealed hinge is connected to the corresponding edge banding.

[0006] Furthermore, the door leaf includes a steel plate body, a fireproof door core, and multiple layers of wooden boards. The steel plate body is hollow inside, the fireproof door core is installed in the steel plate body, and there are two multiple layers of wooden boards. The two multiple layers of wooden boards are respectively installed on both sides of the steel plate body, and their ends are respectively connected to the two corresponding edge bandings.

[0007] Furthermore, the door leaf also includes multiple steel frames, all of which are installed in the steel plate box to fix and support the steel plate box and the fireproof door core.

[0008] Furthermore, the threaded end of the fixing bolt is threadedly connected to the steel plate housing and the outermost steel frame.

[0009] Furthermore, a reinforcing plate is also provided in the steel plate box body. The reinforcing plate is located inside the outermost steel frame, and the threaded end of the fixing bolt is threadedly connected to the reinforcing plate.

[0010] Furthermore, the reinforcing rib is connected to the wall by screws.

[0011] Furthermore, L-shaped fixing seats are installed on both sides of the door frame, and insert plates are detachably installed on the L-shaped fixing seats. A faceplate is detachably installed on the top of the insert plate.

[0012] Furthermore, multiple shaped wooden blocks are evenly distributed on one side of the door leaf.

[0013] The beneficial effects of this utility model are as follows: By setting reinforcing ribs, this utility model can effectively distribute the force on the expansion bolts, reducing the problem of loosening of the expansion bolts due to long-term use and frequent opening and closing of the door, making the connection between the door and the wall more firm and reliable. At the same time, by setting the edge sealing of the frame structure and combining it with the door body, a stable and reliable connection foundation is provided for the concealed hinges. The edge sealing of the frame structure can distribute the dynamic load to multiple connection points, forming an integrated force-bearing system. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the elevation structure of Embodiment 1 of this utility model.

[0015] Figure 2 This is a cross-sectional structural diagram of Embodiment 1 of the present invention.

[0016] Figure 3 This is a partial cross-sectional structural diagram of Embodiment 1 of the present invention.

[0017] Figure 4 This is a cross-sectional structural diagram of Embodiment 2 of the present invention.

[0018] Figure 5 This is a schematic diagram of the inner edge sealing structure of the door leaf in an embodiment of this utility model.

[0019] The components include: 1. Door frame; 2. Door leaf; 3. Expansion bolts; 4. Concealed hinges; 5. Reinforcing ribs; 6. Edge banding; 7. Fixing bolts; 8. Steel frame; 9. Reinforcing plate; 10. Screws; 11. L-shaped fixing base; 12. Insert plate; 13. Facing line; 14. Decorative wooden block; 15. Decorative wooden board; 16. Integrated upper and lower concealed latches; 17. Stainless steel anti-pry pins; 18. Stainless steel power cable guide; 19. Electrically controlled intelligent password multi-point lock.

[0020] 21. Steel plate body; 22. Fireproof door core; 23. Multi-layer wood panel. Detailed Implementation

[0021] 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 one embodiment of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] To make the objectives, technical solutions and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and specific embodiments.

[0023] In the following description, references to "an embodiment," "an embodiment," "an example," "example," etc., indicate that the described embodiment or example may include a particular feature, structure, characteristic, property, element, or limitation, but not every embodiment or example necessarily includes that particular feature, structure, characteristic, property, element, or limitation. Furthermore, the repeated use of the phrase "an embodiment according to this application," while possibly referring to the same embodiment, does not necessarily refer to the same embodiment.

[0024] like Figures 1-5 As shown, this utility model discloses a steel-wood double-leaf entrance door, which includes a door frame 1 and two door leaves 2. The outer side of the door frame 1 is connected to the wall by expansion bolts 3. Both door leaves 2 are connected to the inner side of the door frame 1 by multiple concealed hinges 4. Reinforcing ribs 5 are provided on both sides of the expansion bolts 3, and the two ends of the reinforcing ribs 5 are connected to the door frame 1 and the wall respectively. Edge banding 6 is provided at both ends of the door leaves 2. The edge banding 6 has a frame structure and is connected to the door leaves 2 by fixing bolts 7. The first end of the concealed hinge 4 is connected to the door frame 1, and the second end of the concealed hinge 4 is connected to the corresponding edge banding 6. In this embodiment, an integrated upper and lower concealed latch 16 is provided between the two door leaves 2, and a stainless steel anti-pry pin 17 is provided between the door leaves 2 and the door frame 1. Multiple fixing bolts 7 are used, and the top of the door leaves 2 is connected to the edge banding 6 by fixing bolts 7. Additionally, a slot is cut into the edge of the door frame to embed a stainless steel power cable tray 18. The wiring passes inside the door frame and is completely hidden when the door is closed. This tray powers the electronically controlled smart combination lock 19 mounted on the door frame, combining the intelligence of an electronic lock, the convenience of a combination lock, and the high security of a multi-point lock. The stainless steel power cable tray 18 and the electronically controlled smart combination lock 19 are existing technologies and will not be described in detail here.

[0025] Both sides of the expansion bolt 3 are provided with reinforcing ribs 5, and the two ends of the reinforcing ribs 5 are connected to the door frame 1 and the wall respectively. The reinforcing ribs 5 play an auxiliary fixing role. They can share part of the force borne by the expansion bolt 3, enhance the connection strength between the door frame 1 and the wall, prevent the expansion bolt 3 from loosening due to frequent stress on the door frame 1, and thus improve the stability of the entire connection between the door and the wall.

[0026] The edge banding 6 of the frame structure possesses high strength and rigidity. Combined with the main body of the door leaf 2, it forms a unified load-bearing system. When the door leaf 2 is subjected to external impact, the edge banding 6 can absorb some of the force and distribute it evenly across the entire door leaf 2 structure, preventing excessive localized stress that could damage the door leaf 2. Simultaneously, the edge banding 6 of the frame structure acts like a robust frame for the door leaf 2, effectively restraining its deformation. Furthermore, the edge banding 6 of the frame structure can better cooperate with the sealing strip on the door frame 1, improving the door's sealing performance.

[0027] Meanwhile, the edge banding 6, located at both ends of the door leaf 2 and forming a frame structure, provides a stable and reliable connection foundation for the concealed hinges 4. The frame structure of the edge banding 6 has sufficient strength and rigidity to withstand the dynamic load transmitted by the concealed hinges 4 during door opening and closing, ensuring a firm connection between the concealed hinges 4 and the door leaf 2 and door frame 1, preventing loosening. When the concealed hinges 4 generate a rebound force, the load is first transmitted to the edge banding 6 frame, and then distributed throughout the entire door frame 1 structure through the continuity of the frame, rather than being concentrated on a single expansion bolt 3. The concealed hinges are completely hidden inside the frame and leaf profiles or cabinet after installation, with a seamless surface connection, enhancing the overall design aesthetic. This technology is existing and will not be elaborated further here.

[0028] This invention effectively distributes the force on the expansion bolts 3 by setting reinforcing ribs 5, reducing the loosening of the expansion bolts 3 due to long-term use and frequent opening and closing of the door, making the connection between the door and the wall more secure and reliable. At the same time, by setting the edge sealing 6 of the frame structure, combined with the main body of the door leaf 2, a stable and reliable connection foundation is provided for the concealed hinges 4. The edge sealing 6 of the frame structure can distribute the dynamic load to multiple connection points, forming an integrated force-bearing system.

[0029] In one embodiment, the door leaf 2 includes a steel plate body 21, a fireproof door core 22, and a multi-layer wooden board 23. The steel plate body 21 is hollow inside, the fireproof door core 22 is installed in the steel plate body 21, and there are two multi-layer wooden boards 23. The two multi-layer wooden boards 23 are respectively installed on both sides of the steel plate body 21, and their ends are respectively connected to the two corresponding edge banding 6.

[0030] The door leaf 2 uses a steel plate box 21 as its basic frame. The steel plate box 21 is hollow inside. This design ensures that the door leaf 2 has a certain strength to withstand external forces such as collisions and compression during daily use, while also reducing the overall weight of the door leaf 2 and facilitating the opening and closing of the door. At the same time, the hollow structure also provides space for the installation of other components. In this embodiment, the steel plate box 21 is made of double-sided 1.0mm anti-theft steel plates bent into shape.

[0031] The fireproof door core 22 is installed inside the steel plate box 21, and the steel plate box 21 serves to protect and fix the fireproof door core 22.

[0032] Two multi-layered wooden boards 23 are installed on both sides of the steel plate housing 21. During the assembly of the door leaf 2, the multi-layered wooden boards 23 are first placed in predetermined positions on both sides of the steel plate housing 21. Then, the edge banding 6 is installed at both ends of the door leaf 2. The edge banding 6 applies inward pressure to the multi-layered wooden boards 23, ensuring a tight fit between the multi-layered wooden boards 23 and the steel plate housing 21, preventing loosening or displacement during use. The multi-layered wooden boards 23 not only serve a decorative purpose, making the door more aesthetically pleasing and welcoming, meeting people's aesthetic needs for home environments, but also enhance the overall strength and stability of the door leaf 2 to a certain extent.

[0033] In one embodiment, the door leaf 2 further includes multiple steel frames 8, all installed within the steel plate housing 21, for fixing and supporting the steel plate housing 21 and the fireproof door core 22. In this embodiment, the steel frames 8 are U-shaped steel frames 8, with symmetrically arranged U-shaped steel frames 8 installed at both ends of the door leaf 2 and U-shaped steel frames 8 installed in the middle of the door leaf 2. The steel frames 8 have high strength and rigidity, and they are tightly connected to the steel plate housing 21. When the steel plate housing 21 is subjected to external compression or tension, the steel frames 8 can withstand part of the force and transmit it to the entire door leaf 2 structure. The steel frames 8 not only support the steel plate housing 21 but also fix the fireproof door core 22. When installing the fireproof door core 22, the steel frames 8 can provide positioning and support for the fireproof door core 22, ensuring that the fireproof door core 22 is accurately installed inside the steel plate housing 21 and does not shift during use. In this embodiment, the thickness of the steel frames 8 is 2mm.

[0034] In one embodiment, the threaded end of the fixing bolt 7 is threadedly connected to the steel plate housing 21 and the outermost steel frame 8. The threaded end of the fixing bolt 7 is simultaneously screwed into the pre-made threaded holes of the steel plate housing 21 and the outermost steel frame 8, forming a double thread engagement of "steel plate-frame". The dynamic load of the switch can be further dispersed through the path of the rebound force of the concealed hinge 4 → outer surface of the steel plate housing 21 → steel frame 8 mesh → outermost steel frame 8 → fixing bolt 7.

[0035] In one embodiment, a reinforcing plate 9 is also provided in the steel plate housing 21. The reinforcing plate 9 is located inside the outermost steel frame 8, and the threaded end of the fixing bolt 7 is threadedly connected to the reinforcing plate 9. In this embodiment, the reinforcing plate 9 is located inside the U-shaped steel frame 8. The thickness of the reinforcing plate 9 is 5mm. The threaded end of the fixing bolt 7 passes through the steel plate housing 21 and the steel frame 8 in sequence, and finally screws into the pre-made threaded hole of the reinforcing plate 9 (thickness ≥ 3.0mm), forming a three-layer material interlocking. Even if the threads of the steel plate housing or the steel frame 8 experience slight stripping due to fatigue, the complete thread of the reinforcing plate 9 can still provide additional load-bearing capacity, ensuring connection reliability.

[0036] In one embodiment, the reinforcing rib 5 is connected to the wall by screws 10.

[0037] In one embodiment, L-shaped fixing seats 11 are installed on both sides of the door frame 1. A plug plate 12 is detachably installed on the L-shaped fixing seat 11, and a face strip 13 is detachably installed on the top of the plug plate 12.

[0038] In this embodiment, the insert plate 12 has mounting slots at both its upper and lower ends. The lower end of the insert plate 12 is inserted into the L-shaped fixing seat 11, and the upper end of the insert plate 12 is inserted into the face strip 13. The upper surface of the insert plate 12 is flush with the wall surface. After the first end of the face strip 13 is inserted into the insert plate 12, its second end contacts the wall surface. The double-sided insertion and removal of the face strip 13 makes the door installation process simpler and more efficient. Construction workers can first fix the L-shaped fixing seat to both sides of the door frame 1, then insert the insert plate 12 into the L-shaped fixing seat in sequence, and finally insert the face strip 13 into the insert plate 12. The entire process requires no complicated tools or cumbersome operating steps, greatly shortening the installation time and improving work efficiency. When the door needs repair, replacement, or renovation, the disassembly process is equally easy.

[0039] The combined structure of the L-shaped fixing base 11, the insert plate 12, and the facing line 13 greatly enhances the connection strength between the door frame 1 and the wall. The L-shaped fixing base 11 provides multi-directional support, the insert plate 12 further increases the connection area and stability, while the facing line 13 reinforces and beautifies the connection area. This structure effectively prevents the door frame 1 from loosening or deforming due to external forces (such as the impact of opening and closing the door, wind pressure, etc.) during use, ensuring that the door frame 1 and the wall always maintain a tight connection, thus improving the overall safety and reliability of the door system. At the same time, the facing line 13 can prevent collisions and scratches between the door frame 1 and the wall during daily use, providing protection.

[0040] In one embodiment, multiple decorative wooden blocks 14 are evenly distributed on one side of the door leaf 2 to enhance the overall aesthetics of the entrance door. The wooden blocks can be processed into curved, wavy, or geometric shapes to meet the personalized needs of scenarios such as hospitals and hotels. In this first embodiment, the decorative wooden blocks 14 are located on the sliding facade outside the double-leaf entrance door.

[0041] In one embodiment, a decorative wooden panel 15 is installed on one side of the door leaf 2. In this second embodiment, the decorative wooden panel 15 is a 15mm thick solid wood panel of Phoebe zhennan wood for the exterior. Round bottom.

[0042] The above description of the disclosed embodiments enables those skilled in the art to implement or use this invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, this invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A steel-wood double-leaf entrance door, comprising a door frame and two door leaves, wherein the outer side of the door frame is connected to the wall by expansion bolts, and both door leaves are connected to the inner side of the door frame by multiple concealed hinges, characterized in that: The expansion bolts are provided with reinforcing ribs on both sides, and the two ends of the reinforcing ribs are respectively connected to the door frame and the wall. The door leaf is provided with edge sealing on both ends. The edge sealing is a frame structure and is connected to the door leaf by fixing bolts. The first end of the concealed hinge is connected to the door frame, and the second end of the concealed hinge is connected to the corresponding edge sealing.

2. A steel-wood double-leaf entrance door according to claim 1, characterized in that: The door leaf includes a steel plate body, a fireproof door core, and multiple layers of wood panels. The steel plate body is hollow inside, and the fireproof door core is installed inside the steel plate body. There are two multiple layers of wood panels, which are respectively installed on both sides of the steel plate body, and their ends are respectively connected to the two corresponding edge bandings.

3. A steel-wood double-leaf entrance door according to claim 2, characterized in that: The door leaf also includes multiple steel frames, all of which are installed in the steel plate box to fix and support the steel plate box and the fireproof door core.

4. A steel-wood double-leaf entrance door according to claim 3, characterized in that: The threaded end of the fixing bolt is threadedly connected to the steel plate body and the outermost steel frame.

5. A steel-wood double-leaf entrance door according to claim 4, characterized in that: The steel plate box is also equipped with a reinforcing plate, which is located inside the outermost steel frame, and the threaded end of the fixing bolt is threadedly connected to the reinforcing plate.

6. A steel-wood double-leaf entrance door according to claim 1, characterized in that: The reinforcing ribs are connected to the wall by screws.

7. A steel-wood double-leaf entrance door according to claim 1, characterized in that: Both sides of the door frame are equipped with L-shaped fixing seats, and insert plates are detachably installed on the L-shaped fixing seats. A faceplate is detachably installed on the top of the insert plate.

8. A steel-wood double-leaf entrance door according to claim 1, characterized in that: The door panel has multiple shaped wooden blocks evenly distributed on one side.

9. A steel-wood double-leaf entrance door according to claim 1, characterized in that: A decorative wooden panel is installed on one side of the door.

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