A cast aluminum armored door structure

By incorporating sound insulation strips and a removable sound insulation frame into cast aluminum armored doors, the problems of poor sound absorption and high noise levels in cast aluminum armored doors are solved, improving sound insulation performance and the service life of the door frame, while reducing maintenance costs.

CN224338868UActive Publication Date: 2026-06-09ZHEJIANG KAIHUA DOOR IND CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ZHEJIANG KAIHUA DOOR IND CO LTD
Filing Date
2025-06-10
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

Existing cast aluminum armored doors lack sound absorption and have poor sound insulation performance. The gap between the door and the door frame results in poor sound insulation, and the noise when closing the door is loud and affects the quality of the door frame.

Method used

First and second sound insulation strips are installed between the door body and the door frame and fixed with adhesive to increase tightness; the sound insulation frame is in close contact with the door frame and fixed with a fixing plate and screws to achieve a detachable design to prevent deformation.

Benefits of technology

It improves sound insulation, reduces noise and impact force when closing the door, extends the service life of the door frame, and simplifies the maintenance and replacement process.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN224338868U_ABST
    Figure CN224338868U_ABST
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Abstract

The utility model discloses a cast aluminum armored door structure relates to cast aluminum armored door technical field, this cast aluminum armored door structure, including the door body, the outside of door body is provided with frame assembly, the rear surface of door body is provided with second inlay groove, the inside inlay of second inlay groove has second sound insulation strip, and the rear surface of second sound insulation strip is fixed with the inner wall of second inlay groove through outer use fixed glue and sticks together, one side of door body is provided with door lock, the frame assembly includes door frame and sound insulation part, and the sound insulation part is located at the rear end of door frame, and this scheme has solved the problem that the existing cast aluminum armored door does not have sound absorption effect, and the sound insulation performance is general, and the transmission of noise does not have the weakening effect of good barrier, especially, there is certain gap between door and door frame, and the existence of gap leads to worse sound insulation effect, and the collision between door and door frame also can produce larger noise when closing the door, and the collision also can cause certain influence to the quality of door and door frame.
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Description

Technical Field

[0001] This utility model relates to the field of cast aluminum armored door technology, specifically a cast aluminum armored door structure. Background Technology

[0002] Cast aluminum armored doors are high-end security doors that combine cast aluminum technology with armor protection systems. They are made of solid aluminum material and cast as a whole, with the surface treated with multiple layers of baking paint.

[0003] For example, the Chinese authorized patent CN218953174U (A Type of Cast Aluminum Armored Door for Easy Installation) includes a cast aluminum armored door frame. The inner side of the frame has symmetrically arranged grooves. Each groove has slots on its upper and lower surfaces, and an elastic steel plate is installed inside each groove. The upper and lower surfaces of the elastic steel plate are fixedly fitted with locking blocks that engage with the slots. The cast aluminum armored door body is fixedly installed on one side of both elastic steel plates. This invention uses hinges with elastic steel plates to connect to the cast aluminum armored door body, allowing the elastic steel plates to be inserted into the grooves. Simultaneously, the elastic deformation capability of the steel plates secures the locking blocks within the slots, thereby improving the efficiency of installing the cast aluminum armored door. This solves the technical problem of existing cast aluminum armored doors requiring separate hinge and screw connections to the door frame and door body, which is cumbersome and reduces assembly efficiency.

[0004] However, existing cast aluminum armored doors lack sound absorption and have only average sound insulation performance. They do not effectively block or reduce noise transmission, especially since there is a gap between the door and the frame, which further worsens the sound insulation. Moreover, the collision between the door and the frame when closing the door generates significant noise and also affects the quality of the door and frame. Therefore, they do not meet current requirements, and we propose a new cast aluminum armored door structure. Utility Model Content

[0005] The purpose of this utility model is to provide a cast aluminum armored door structure to solve the problems mentioned in the background art, such as the lack of sound absorption effect, general sound insulation performance, and poor noise reduction effect of existing cast aluminum armored doors. In particular, there is a certain gap between the door and the door frame, which leads to poor sound insulation. Furthermore, the collision between the door and the door frame when closing the door will also generate a lot of noise, and the collision will also have a certain impact on the quality of the door and the door frame.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a cast aluminum armored door structure, comprising: a door body, a frame assembly provided on the outside of the door body, a second recessed groove provided on the rear surface of the door body, a second sound insulation strip embedded inside the second recessed groove, and the rear surface of the second sound insulation strip being bonded and fixed to the inner wall of the second recessed groove by external fixing adhesive, and a door lock provided on one side of the door body.

[0007] Preferably, the frame assembly includes a door frame and a sound insulation part, with the sound insulation part located at the rear end of the door frame. A hinge is provided at the connection between the other side of the door and the door frame, and the door is rotatably connected to the door frame via the hinge.

[0008] Preferably, the sound insulation part includes a sound insulation frame, and the outer wall of the sound insulation frame is in close contact with the inner wall of the door frame. A first recessed groove is provided on the side of the sound insulation frame that is close to the door body. A first sound insulation strip is embedded in the interior of the first recessed groove, and the rear surface of the first sound insulation strip is bonded and fixed to the inner wall of the first recessed groove by external fixing adhesive.

[0009] Preferably, the sound insulation part further includes a fixing plate, and four fixing plates are provided, with one end of each of the four fixing plates welded and fixed to the corner of the sound insulation frame.

[0010] Preferably, the other end surface of the fixing plate is provided with a mounting hole, one end of the mounting hole is provided with a fixing screw, and one end of the fixing screw passes through the mounting hole and is threadedly connected to the door frame.

[0011] Preferably, the sound insulation frame has a slot at its center, and the slot extends through the sound insulation frame from front to back.

[0012] Preferably, the front surface of the door is provided with decorative patterns, and multiple decorative patterns are provided, and the decorative patterns are integrally cast with the door.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] (1) This utility model fixes the first sound insulation strip and the second sound insulation strip inside the first inner groove and the second inner groove respectively. One side of the first sound insulation strip and the second sound insulation strip protrudes from the first inner groove and the second inner groove respectively. When the door is closed, the second sound insulation strip contacts the first sound insulation strip, which improves the tightness between the door and the door frame, improves the sound insulation effect, and can also buffer, reduce the impact force and the noise generated by the impact. While improving the service life of the door and the door frame, it also improves the noise reduction effect. It solves the problem that the existing cast aluminum armored door has no sound absorption effect, the sound insulation performance is generally poor, and the noise transmission is not well blocked. In particular, there is a certain gap between the door and the door frame. The existence of the gap leads to a worse sound insulation effect. Moreover, the collision between the door and the door frame when closing the door will also generate a lot of noise. At the same time, the collision will also have a certain impact on the quality of the door and the door frame.

[0015] (2) By making the outer wall of the soundproof frame in close contact with the inner wall of the door frame, and by making the fixing plate in contact with the outer wall of the door frame, the movement of the soundproof frame is limited. The soundproof frame is detachable by fixing screws. Long-term door closing collisions can easily cause the soundproof frame to deform. The detachable form replaces the welding form, which makes it easy to replace the damaged parts, improves the convenience of maintenance and replacement, and also reduces the replacement cost. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the overall rear view structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the sound insulation part structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the rear surface structure of the door body of this utility model;

[0020] In the diagram: 1. Door body; 2. Frame assembly; 3. Door lock; 4. Hinge; 5. Door frame; 6. Sound insulation section; 7. Sound insulation frame; 8. Fixing plate; 9. First recessed groove; 10. First sound insulation strip; 11. Second recessed groove; 12. Second sound insulation strip; 13. Mounting hole; 14. Fixing screw; 15. Hollow groove; 16. Decorative pattern. 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 of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Please see Figure 1-4This utility model provides an embodiment of a cast aluminum armored door structure, comprising: a door body 1, a frame assembly 2 externally disposed on the door body 1, a door lock 3 disposed on one side of the door body 1 for closing the door body 1, the frame assembly 2 including a door frame 5 and a sound insulation part 6, the sound insulation part 6 being located at the rear end of the door frame 5, a hinge 4 disposed at the connection between the other side of the door body 1 and the door frame 5, and the door body 1 being rotatably connected to the door frame 5 via the hinge 4 for easy opening of the door body 1, the sound insulation part 6 including a sound insulation frame 7, the outer wall of the sound insulation frame 7 being in close contact with the inner wall of the door frame 5, a slot 15 disposed at the center of the sound insulation frame 7, the slot 15 extending through the sound insulation frame 7 from front to back, a first recessed groove 9 disposed on the side of the sound insulation frame 7 adjacent to the door body 1, the first recessed groove... A first sound insulation strip 10 is embedded inside the groove 9, and the rear surface of the first sound insulation strip 10 is bonded and fixed to the inner wall of the first embedded groove 9 by external fixing adhesive. A second embedded groove 11 is provided on the rear surface of the door body 1, and a second sound insulation strip 12 is embedded inside the second embedded groove 11. The rear surface of the second sound insulation strip 12 is bonded and fixed to the inner wall of the second embedded groove 11 by external fixing adhesive. When the door body 1 is closed, the second sound insulation strip 12 contacts the first sound insulation strip 10, which improves the tightness between the door body 1 and the door frame 5 and improves the sound insulation effect. When the door is closed, the second sound insulation strip 12 and the first sound insulation strip 10 buffer each other, reducing the impact force and the noise generated by the impact. This improves the service life of the door body 1 and the door frame 5 while also improving the noise reduction effect.

[0023] The sound insulation section 6 also includes four fixing plates 8. One end of each fixing plate 8 is welded to the corner of the sound insulation frame 7. The other end of the fixing plate 8 has a mounting hole 13. One end of the mounting hole 13 has a fixing screw 14. One end of the fixing screw 14 passes through the mounting hole 13 and is threaded to the door frame 5, inserting the sound insulation frame 7 into the center of the door frame 5. The outer wall of the sound insulation frame 7 is in close contact with the inner wall of the door frame 5. The contact between the fixing plate 8 and the outer wall of the door frame 5 limits the movement of the sound insulation frame 7. The fixing screw 14 passes through the mounting hole 13 and is threaded to the door frame 5, thus fixing the sound insulation frame 7. This also makes the sound insulation frame 7 detachable. Long-term door closing and impact can easily cause deformation of the sound insulation frame 7. The detachable form replaces the welding form, making it easier to replace the damaged one independently, improving the convenience of maintenance and replacement, and reducing replacement costs.

[0024] Further, the front surface of the door body 1 is provided with decorative patterns 16, and there are multiple decorative patterns 16. The decorative patterns 16 are integrally cast with the door body 1, thereby improving the aesthetic effect of the door body 1.

[0025] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A cast aluminium armoured door construction comprising a door body (1), characterised in that: The outer part of the door body (1) is provided with a frame assembly (2), the rear surface of the door body (1) is provided with a second embedded groove (11), the inside of the second embedded groove (11) is embedded with a second sound insulation strip (12), the rear surface of the second sound insulation strip (12) is adhered and fixed with the inner wall of the second embedded groove (11) through external fixing glue, and one side of the door body (1) is provided with a door lock (3).

2. A cast aluminium door construction according to claim 1, characterised in that: The frame assembly (2) comprises a door frame (5) and a sound insulation part (6), the sound insulation part (6) is located at the rear end of the door frame (5), the other side of the door body (1) is provided with a hinge hinge (4) at the connection with the door frame (5), and the door body (1) is rotationally connected with the door frame (5) through the hinge hinge (4).

3. A cast aluminium door construction according to claim 2, characterised in that: The sound insulation part (6) comprises a sound insulation frame (7), the outer wall of the sound insulation frame (7) is in close contact with the inner wall of the door frame (5), one side of the sound insulation frame (7) close to the door body (1) is provided with a first embedded groove (9), the inside of the first embedded groove (9) is embedded with a first sound insulation strip (10), and the rear surface of the first sound insulation strip (10) is adhered and fixed with the inner wall of the first embedded groove (9) through external fixing glue.

4. A cast aluminium door construction according to claim 3, characterised in that: The sound insulation part (6) further comprises a fixed plate (8), and four fixed plates (8) are provided, and one end of the four fixed plates (8) is respectively welded and fixed with the corners of the sound insulation frame (7).

5. A cast aluminium door construction according to claim 4, characterised in that: The other end surface of the fixed plate (8) is provided with a mounting hole (13), one end of the mounting hole (13) is provided with a fixed screw (14), and one end of the fixed screw (14) is threadedly connected with the door frame (5) through the mounting hole (13).

6. The cast aluminum door construction of claim 3 wherein: The center of the sound insulation frame (7) is provided with a hollow groove (15), and the hollow groove (15) penetrates through the sound insulation frame (7) from front to back.

7. A cast aluminium door construction according to claim 1, characterised in that: The front surface of the door body (1) is provided with decorative lines (16), the decorative lines (16) are provided with a plurality of decorative lines (16), and the decorative lines (16) are integrally cast formed with the door body (1). The front surface of the door body (1) is provided with decorative lines (16), the decorative lines (16) are provided with a plurality of decorative lines (16), and the decorative lines (16) are integrally cast formed with the door body (1).