Steel-aluminum composite structure entrance door

Abstract

The utility model belongs to the technical field of entrance doors, and relates to a steel-aluminum combined structure entrance door which comprises a door leaf assembly, a door frame assembly is connected to the door leaf assembly, the door leaf assembly comprises a door leaf aluminum frame, a first clamping groove and a second clamping groove are formed in the door leaf aluminum frame, and door leaf sealing rubber strips a are installed in the clamping grooves. The sealing rubber strips on the door leaf aluminum frame and the sealing rubber strips on the door frame aluminum frame are in multiple lap joint, gaps around the door leaf are covered, wind, water, dust and noise are effectively isolated, and therefore the sealing performance of the entrance door is improved; the door frame body is composed of a stainless steel frame (laser cutting and bending welding), the overall strength of the door frame is ensured through the high hardness and deformation resistance of steel, and the hard requirements for theft prevention, prying resistance and impact resistance are met; compared with the defects that a traditional steel door is high in strength and poor in sealing performance and an all-aluminum door is good in sealing performance and low in strength, the entrance door is high in strength and high in sealing performance and has the double advantages.

Description

Technical Field

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

[0002] The front door is the first door you enter a house. It is also called the entrance door. Because the front door plays a very important role in the security and protection of a home, it is also called a security door. The main body of the front door and the door frame are mostly made of sheet metal (steel plate or iron plate) that has been cut and bent into shape.

[0003] When using the above technology, the following technical problems were found in the existing technology: The advantage of existing steel and iron plate bent entry doors is their high strength. Although it is very easy to change the wall cladding size for different door openings, the bending process cannot bend smaller grooves, making it impossible to snap the rubber sealing strip into the groove for installation. Only simple double-sided adhesive sealant can be used for pasting to achieve a simple seal between the door frame and the door leaf when opening and closing. In areas with high sealing requirements, this type of adhesive strip cannot meet the high sealing requirements. To achieve high sealing performance for entry doors, all-aluminum entry doors exist on the market, where both the door frame and door leaf skeleton are made of extruded aluminum profiles. The extrusion process can reduce weight... The loose-structure slotted design allows the rubber strip to be installed onto the profile through the slot. The door frame and door leaf rubber strips overlap at multiple points, achieving a high-seal connection. However, aluminum is relatively soft, making it difficult to meet the rigidity requirements of entrance doors. Furthermore, because aluminum profiles are extruded from molds, their shape and dimensions are fixed. For different door opening sizes, varying the wall cladding dimensions and trim styles is challenging, requiring different styles of edging and connecting plates. Assembling different aluminum profiles into the wall cladding is cumbersome and increases costs. Therefore, we propose an improved steel-aluminum composite structure entrance door. Utility Model Content

[0004] The technical problem this invention aims to solve is that traditional steel doors have high strength but poor sealing performance, while all-aluminum doors have good sealing performance but low strength.

[0005] The present invention discloses a steel-aluminum composite structure entrance door, including a door leaf assembly, a door frame assembly connected to the door leaf assembly, the door leaf assembly including a door leaf aluminum frame, the door leaf aluminum frame having a first slot and a second slot, a door leaf sealing strip a installed in the first slot, and a door leaf sealing strip b and a door leaf sealing strip c installed in the second slot, the front and back of the door leaf aluminum frame being respectively installed with a front decorative panel and a rear decorative panel, and door leaf filler filling the space between the door leaf aluminum frame and the front and rear decorative panels.

[0006] The door frame assembly includes three stainless steel side frames and a stainless steel bottom frame. The three stainless steel side frames and the stainless steel bottom frame are spliced ​​and welded together to form a door frame, which is set on the outside of the aluminum frame of the door leaf. The stainless steel side frames and the stainless steel bottom frame have splicing slots, and the aluminum side frames are set in the splicing slots. The splicing slots have screw holes, and self-tapping screws are installed in the screw holes. The aluminum side frames are embedded in the splicing slots and fixed by the self-tapping screws. The stainless steel side frames on both sides of the aluminum frame of the door leaf are provided with stainless steel inner edging. The aluminum side frames have multiple slots three, and door frame sealing strips d and e are snapped into the slots three.

[0007] Both sides of the aluminum frame of the door leaf are provided with frame C grooves, and locks and hinges are respectively installed in the two frame C grooves.

[0008] The hinge is installed on the side of the door panel aluminum frame away from the lock, and the door panel aluminum frame is movably connected to the stainless steel frame via the hinge.

[0009] The door panel filling material is made of fireproof rock wool.

[0010] The door leaf sealing strips a, b, c, d, and e are made of EPDM rubber and have a hollow cross-section to enhance elasticity.

[0011] Compared with existing technologies, the beneficial effects of this utility model are as follows: the sealing strips on the aluminum frame of the door leaf and the sealing strips on the aluminum frame of the door leaf form multiple overlaps, covering the gaps around the door leaf, effectively isolating wind, water, dust and noise, thereby improving the airtightness of the entrance door; the main body of the door frame is made of stainless steel frame (laser cutting + bending and welding), and the high hardness and deformation resistance of the steel ensure the overall strength of the door frame, meeting the hard requirements of anti-theft, anti-pry, and impact resistance; compared with the shortcomings of traditional steel doors which have high strength but poor airtightness and all-aluminum doors which have good airtightness but low strength, this entrance door has both high strength and high airtightness, with dual advantages.

[0012] The aluminum frame is produced in a standardized manner and is fixed with self-tapping screws after being embedded in a stainless steel slot. It is compatible with stainless steel frames of different sizes, reducing splicing complexity and enabling the aluminum frame to have strong compatibility when mass-produced, thus reducing inventory pressure. The concealed installation screws and surface treatment process make this entrance door suitable for modern architectural styles. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

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

[0015] Figure 2 This is a structural schematic diagram of the cross-section of the door leaf assembly of this utility model.

[0016] Figure 3 This is a schematic diagram of the cross-sectional structure of the stainless steel frame and aluminum frame of this utility model.

[0017] Figure 4 This is a structural schematic diagram of the longitudinal section of the stainless steel frame and aluminum frame of this utility model.

[0018] Figure 5 This is a structural schematic diagram of the longitudinal section of the stainless steel lower frame and aluminum frame of this utility model.

[0019] Figure 6 This is a structural schematic diagram of the longitudinal section of the door leaf assembly and door frame assembly of this utility model.

[0020] Figure 7 This is a structural schematic diagram of the cross-section of the door leaf assembly and the door frame assembly of this utility model.

[0021] In the diagram: 1. Door leaf assembly; 2. Door frame assembly; 3. Door leaf aluminum frame; 4. Slot 1; 5. Slot 2; 6. Door leaf sealing strip a; 7. Door leaf sealing strip b; 8. Door leaf sealing strip c; 9. Front trim panel; 10. Rear trim panel; 11. Door leaf filler; 12. Stainless steel frame; 13. Stainless steel bottom frame; 14. Splicing slot; 15. Aluminum frame; 16. Screw hole; 17. Self-tapping screw; 18. Slot 3; 19. Door frame sealing strip d; 20. Door frame sealing strip e; 21. Frame C groove; 22. Lock; 23. Hinge; 24. Stainless steel inner edging. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0023] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0024] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0025] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0026] Example 1

[0027] like Figure 1 , Figure 2 and Figure 7 As shown, a steel-aluminum composite structure entrance door includes a door leaf assembly 1, a door frame assembly 2 connected to the door leaf assembly 1, the door leaf assembly 1 includes a door leaf aluminum frame 3, the door leaf aluminum frame 3 has a first slot 4 and a second slot 5, a door leaf sealing strip a6 is installed in the first slot, and a door leaf sealing strip b7 and a door leaf sealing strip c8 are installed in the second slot 5, a front decorative panel 9 and a rear decorative panel 10 are respectively installed on the front and back of the door leaf aluminum frame 3, and a door leaf filler 11 is filled between the door leaf aluminum frame 3 and the front decorative panel 9 and the rear decorative panel 10;

[0028] Door leaf manufacturing method: Door leaf sealing strip a6 is inserted into the corresponding slot 4 of the door leaf aluminum frame 3. Door leaf sealing strip b7 and door leaf sealing strip c8 are respectively inserted into the corresponding slot 5 of the door leaf aluminum frame 3. Front decorative panel 9 and rear decorative panel 10 are pressed on the front and back of the door leaf aluminum frame 3. Door leaf filler 11 on front decorative panel 9 and rear decorative panel 10 form the entrance door leaf.

[0029] Example 2

[0030] like Figures 1-7 As shown, the door frame assembly 2 includes three stainless steel frame edges 12 and a stainless steel lower frame 13. The three stainless steel frame edges 12 and the stainless steel lower frame 13 are spliced ​​and welded to form a door frame, and are set on the outside of the door leaf aluminum frame 3. The stainless steel frame edges 12 and the stainless steel lower frame 13 are provided with splicing slots 14, and aluminum frame edges 15 are set in the splicing slots 14. The splicing slots 14 are provided with screw holes 16, and self-tapping screws 17 are installed in the screw holes 16. The aluminum frame edges 15 are embedded in the splicing slots 14 and fixed by the self-tapping screws 17. The stainless steel frame edges 12 on both sides of the door leaf aluminum frame 3 are provided with stainless steel inner edging 24. The aluminum frame edges 15 are provided with multiple slots 18, and door frame sealing strips d19 and e20 are snapped into the slots 18.

[0031] Door frame manufacturing process: The stainless steel frame 12 and stainless steel bottom frame 13 are made of steel plates by laser cutting and bending, and then welded together to form the upper, lower, left, and right stainless steel door frames. The aluminum frame 15 is then embedded into the splicing slot 14, and self-tapping screws 17 are installed on the aluminum frame 15 through the screw holes 16. The self-tapping screws 17 are installed from the screw holes 16 on the back of the stainless steel frame 12 and the stainless steel bottom frame 13 to tighten the aluminum frame 15. The aluminum frame 15 is spliced ​​at 90 degrees to the top, bottom, left, and right sides of the door frame composed of the three stainless steel frames 12 and the stainless steel bottom frame 13. After assembly, the door frame is installed on the wall using external expansion bolts. The self-tapping screws 17 are then screwed in from the back, with the screw heads hidden inside the stainless steel frame to ensure a neat appearance.

[0032] The door frame, consisting of stainless steel frame 12 and stainless steel bottom frame 13, is made of stainless steel, retaining the advantages of high strength and flexible size of steel door frames. The stainless steel frame 12 can be used to cut steel plates according to different wall thicknesses, thus easily meeting the requirements of different door openings and sizes. The stainless steel door frame provides the main support, meeting the requirements of anti-theft and impact resistance.

[0033] like Figures 1-7 As shown, both sides of the aluminum frame 3 of the door leaf are provided with a frame C groove 21. A lock 22 and a hinge 23 are respectively installed in the two frame C grooves 21. The lock 22 and the hinge 23 are installed in the frame C grooves 21 of the aluminum frame 3 of the door leaf by external bolts. The hinge 23 is installed on the side of the aluminum frame 3 away from the lock 22, and the aluminum frame 3 of the door leaf is movably connected to the stainless steel frame 12 through the hinge 23.

[0034] During operation, the entrance door composed of door leaf assembly 1 is connected to the door frame composed of three stainless steel frame 12 and stainless steel bottom frame 13 via hinge 23. The entrance door composed of door leaf assembly 1 rotates on the door frame composed of three stainless steel frame 12 and stainless steel bottom frame 13 via hinge 23, realizing the opening and closing of the entrance door. When closed, the door leaf sealing strip a6 on the aluminum frame of the door leaf contacts the door frame sealing strip d19 on the aluminum frame 15; the door leaf aluminum frame 3 contacts the door frame sealing strip e20 on the aluminum frame 15; the door leaf sealing strip b7 and door leaf sealing strip c8 on the aluminum frame of the door leaf contact the aluminum material of the aluminum frame 15, achieving a sealing effect of multi-point contact and overlap between the door leaf and the door frame.

[0035] The extruded aluminum frame 15 has small slots that are embedded in the stainless steel frame 12, allowing the door frame to retain the high strength of the steel frame while also having the structural features for installing high-sealing rubber strips; the stainless steel frame 12 can be brushed, titanium plated, etc., and the aluminum frame 15 is anodized to meet diverse appearance requirements.

[0036] The door leaf filling material 11 is made of fireproof rock wool. The interior of the door leaf is filled with Class A fireproof rock wool, with a fire resistance limit of more than 1 hour. It slows down the spread of fire when exposed to fire. The door leaf sealing strips a6, b7, c8, d19, and e20 are made of EPDM rubber with a hollow cross-section to enhance elasticity. The EPDM rubber strips are resistant to ultraviolet rays and high and low temperatures (-50℃~150℃). They are not easy to harden or crack after long-term use, thus reducing the frequency of strip replacement and lowering long-term maintenance costs. The multi-point overlap and hollow structure of the sealing strips can reduce noise (such as traffic noise and human voices) by more than 30dB, improving living comfort. They are suitable for street-facing residences or noisy environments.

[0037] The aluminum frame 15 is formed by extrusion process. Its slot 3 18 can accurately install the EPDM rubber door frame sealing strip e20 and door frame sealing strip d19. The hollow design of the strip cross section enhances elasticity and ensures that the door leaf fits tightly at multiple points when closed.

[0038] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the present utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the present utility model, thereby enabling those skilled in the art to better understand and utilize it. The present utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A steel-aluminum composite structure entrance door, comprising a door leaf assembly (1), characterized in that: The door leaf assembly (1) is connected to the door frame assembly (2). The door leaf assembly (1) includes a door leaf aluminum frame (3). The door leaf aluminum frame (3) has a slot 1 (4) and a slot 2 (5). A door leaf sealing strip a (6) is installed in the slot. A door leaf sealing strip b (7) and a door leaf sealing strip c (8) are installed in the slot 2 (5). A front decorative panel (9) and a rear decorative panel (10) are installed on the front and back of the door leaf aluminum frame (3), respectively. Door leaf filler (11) is filled between the door leaf aluminum frame (3) and the front decorative panel (9) and the rear decorative panel (10).

2. The steel-aluminum composite structure entrance door according to claim 1, characterized in that: The door frame assembly (2) includes three stainless steel frame sides (12) and a stainless steel bottom frame (13). The three stainless steel frame sides (12) and the stainless steel bottom frame (13) are spliced ​​and welded together to form a door frame, and are set on the outside of the door leaf aluminum frame (3). The stainless steel frame sides (12) and the stainless steel bottom frame (13) are provided with splicing slots (14), and aluminum frame sides (15) are provided in the splicing slots (14). Screw holes (16) are provided in the splicing slots (14). The screw hole (16) is equipped with a self-tapping screw (17), the aluminum frame (15) is embedded in the splicing slot (14) and fixed by the self-tapping screw (17), the stainless steel frame (12) on both sides of the door leaf aluminum frame (3) is provided with a stainless steel inner edging (24), the aluminum frame (15) is provided with multiple slots (18), and the slots (18) are fitted with door frame sealing strip d (19) and door frame sealing strip e (20).

3. The steel-aluminum composite structure entrance door according to claim 2, characterized in that: The aluminum frame (3) of the door leaf has a frame C groove (21) on both sides, and a lock (22) and a hinge (23) are installed in the two frame C grooves (21) respectively.

4. The steel-aluminum composite structure entrance door according to claim 3, characterized in that: The hinge (23) is installed on the side of the door aluminum frame (3) away from the lock (22), and the door aluminum frame (3) is movably connected to the stainless steel frame (12) via the hinge (23).

5. A steel-aluminum composite structure entrance door according to claim 1, characterized in that: The door leaf filling material (11) is made of fireproof rock wool.

6. The steel-aluminum composite structure entrance door according to claim 1, characterized in that: The door leaf sealing strip a (6), door leaf sealing strip b (7), door leaf sealing strip c (8), door frame sealing strip d (19) and door frame sealing strip e (20) are made of EPDM rubber and have a hollow cross-section to enhance elasticity.

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