Step-difference door frame protection door

Abstract

The utility model relates to a kind of step difference door frame protective doors, the step difference door frame protective doors, including door frame and door body, door frame inboard has the first frame surface towards door body side end and the second frame surface towards door body inboard, the corner of first frame surface and second frame surface is equipped with the first step difference recess portion of notch towards door body side end setting, first step difference recess portion is equipped with sealing strip in;The door body includes main keel, the outer periphery of main keel is connected with reinforcing frame, the reinforcing frame includes the U type frame towards the opening of main keel, the bottom edge two corners outside of U type frame are formed with second step difference recess portion respectively, the inner corner outside of the side edge and top edge of U type frame is formed with third step difference recess portion, the inboard of reinforcing frame is sequentially equipped with first lead plate and interior decorative plate, the inside and outside of reinforcing frame is equipped with outer decorative plate, the door frame inboard second frame surface back side is equipped with the second lead plate of first lead plate staggered overlap. The step difference door frame protective doors, with structural strength high, protective sealing effect is good and the like advantage.

Description

Technical Field

[0001] This utility model relates to the field of radiation protection, and in particular to a stepped door frame protection door. Background Technology

[0002] In nuclear medicine, in addition to the common sliding protective doors, there are also hinged protective doors, which consist of a door body and a frame. Because the door body contains a single piece of lead, it is quite heavy. When installing it onto the frame, a pry roller is needed to pry it up. However, in practical applications, it has been found that this prying installation may cause deformation of the door body and frame, making them prone to poor fit and radiation leakage, thus affecting the protective sealing effect of the door. Utility Model Content

[0003] To overcome the shortcomings of the prior art, this utility model provides a stepped door frame protection door, which has the advantages of high structural strength, resistance to deformation, and good sealing and protection effect.

[0004] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: A stepped door frame protective door includes a door frame and a door body that cooperates with it. The inner side of the door frame that cooperates with the door body has a first frame surface facing the side end of the door body and a second frame surface facing the inner side of the door body. A first stepped recess is provided at the corner of the first frame surface and the second frame surface, with a notch facing the side end of the door body. A sealing strip is provided in the first stepped recess. The door body includes a main keel, and a reinforcing frame is connected to the outer periphery of the main keel. The reinforcing frame includes a U-shaped frame with an opening facing the main keel. A second stepped recess is formed on the outer side of the two corners of the bottom edge of the U-shaped frame. A third stepped recess is formed on the outer side of the inner corners of the side and top edges of the U-shaped frame. A first lead plate and an inner decorative plate are arranged sequentially on the inner side of the reinforcing frame. An outer decorative plate is arranged on the inner and outer sides of the reinforcing frame. A second lead plate, which overlaps with the first lead plate, is arranged on the back side of the second frame inside the door frame.

[0005] Preferably, the sealing strip includes an L-shaped body that fits into the first stepped recess. The L-shaped body has a first inner side corresponding to the first frame surface and a second inner side corresponding to the second frame surface. A first sealing part is connected to the first inner side, and the open end of the first sealing part is positioned close to the first inner side in the direction of the second inner side. A second sealing part is connected to the second inner side, and the open end of the second sealing part is positioned close to the second inner side in the direction of the first inner side. This forms two seals when the door is closed, as the end side of the first sealing part is squeezed and the inner side of the second sealing part is squeezed.

[0006] Preferably, the two sides of the L-shaped main body away from the door body are respectively glued to the first stepped recess with adhesive.

[0007] Preferably, the two ends of the L-shaped body are respectively provided with raised portions that bend outwards at their ends, so that they can fit tightly against the first frame surface and the second frame surface.

[0008] Preferably, the bottom end of the outer decorative panel is bent towards the door body to fasten into the third-stage recess outside the bottom edge of the reinforcing frame, and the side and top ends of the outer decorative panel are bent and fastened into the corresponding third-stage recesses on the side and top edges of the reinforcing frame; the bottom end of the inner decorative panel is bent towards the door body to fasten into the third-stage recess inside the bottom edge of the reinforcing frame, and the side and top ends of the inner decorative panel are bent twice towards the door body to abut against the outer decorative panel. The inner and outer decorative panels can be glued and fixed during installation.

[0009] The advantages of this utility model, employing the above-mentioned technical solution, are as follows: This stepped door frame protective door, through the stepped design of the door frame and door body, significantly increases the structural strength of the protective door, making it less prone to deformation of the door frame and door body even when pried open for installation, thus helping to ensure the overall protective sealing performance of the door. In particular, by designing the sealing strip to match the door frame and door body, two effective seals are achieved between them, greatly increasing the sealing and protective effect. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of one embodiment of the present utility model; Figure 2 for Figure 1 A top-view cross-section; Figure 3 for Figure 2 Enlarged structural diagram of section A in the middle; Figure 4 for Figure 1 A side view section; Figure 5 for Figure 4 Enlarged structural diagram of section B; Figure 6 for Figure 4 Enlarged structural diagram of section C; Figure 7 for Figure 5 Cross-sectional view of the central sealing strip.

[0011] In the diagram, 1 is the door frame, 11 is the first frame surface, 12 is the second frame surface, 13 is the first step recess, and 14 is the second lead plate. 2. Door body, 21. Main keel, 22. Reinforcing frame, 23. First lead plate, 24. Inner decorative panel, 25. Outer decorative panel, 221. Second stepped recess, 222. Third stepped recess; 3. Sealing strip; 31. L-shaped body; 32. First sealing part; 33. Second sealing part; 34. Raised part. Detailed Implementation

[0012] To clearly illustrate the technical features of this solution, the present invention will be described in detail below through specific implementation methods and in conjunction with the accompanying drawings.

[0013] like Figure 1-7 As shown, in this embodiment, the stepped door frame protective door includes a door frame 1 and a door body 2 that cooperates with it. The inner side of the door frame 1 that cooperates with the door body 2 has a first frame surface 11 facing the side end of the door body and a second frame surface 12 facing the inner side of the door body. A first stepped recess 13 with a notch facing the side end of the door body is provided at the corner of the first frame surface 11 and the second frame surface 12. This arrangement can not only increase the structural strength of the door frame, but also facilitate the secure installation of the sealing strip. A sealing strip 3 is provided in the first stepped recess 13. The door body 2 includes a main keel 21, and a reinforcing frame 22 is connected to the outer periphery of the main keel 21. The reinforcing frame 22 includes a U-shaped frame that opens toward the main keel 21. A second stepped recess 221 is formed on the outer side of the two corners of the bottom edge of the U-shaped frame. A third stepped recess 222 is formed on the outer side of the inner corners of the side and top edges of the U-shaped frame. A first lead plate 23 and an inner decorative plate 24 are arranged sequentially on the inner side of the reinforcing frame 22. An outer decorative plate 25 is arranged on the inner and outer sides of the reinforcing frame 22. A second lead plate 14, which is offset and overlapped with the first lead plate 23, is arranged on the back side of the second frame surface 12 inside the door frame 1.

[0014] The aforementioned stepped door frame protection door strengthens the structural strength of the door frame through the first stepped recess design, and further strengthens the structural strength of the door body through the second and third stepped recesses. The combination of these features makes the door less prone to deformation when pried up for installation, thus avoiding the risk of radiation leakage during subsequent use and providing better protection. Furthermore, the first stepped recess design facilitates the installation of sealing strips, allowing the door body to be positioned closer to the door frame from top to bottom, reducing the gap size required for installing sealing strips alone, which also helps to better prevent radiation leakage.

[0015] In one embodiment, to better seal the door body 2 and the door frame 1, a sealing strip 3 with the following structure is adopted: Specifically, the sealing strip 3 includes an L-shaped body 31 that fits into the first step recess 13. The L-shaped body 31 has a first inner side corresponding to the first frame surface 11 and a second inner side corresponding to the second frame surface. A first sealing part 32 is connected to the first inner side. The open end of the first sealing part 32 is set close to the first inner side in the direction of the second inner side. A second sealing part 33 is connected to the second inner side. The open end of the second sealing part 33 is set close to the second inner side in the direction of the first inner side. When the door is closed, its end side squeezes the first sealing part 32 and its inner side squeezes the second sealing part 33 to form two seals, thus achieving a better sealing effect.

[0016] In one embodiment, the L-shaped main body 31 is bonded to the first stepped recess 13 on both sides away from the door body by adhesive backing.

[0017] In one embodiment, the L-shaped body 31 has protruding portions 34 at both ends that bend outwards, so that it can fit tightly against the first frame surface 11 and the second frame surface 12.

[0018] The above specific embodiments should not be construed as limiting the scope of protection of this utility model. For those skilled in the art, any alternative improvements or modifications made to the embodiments of this utility model shall fall within the scope of protection of this utility model.

[0019] Any aspects of this utility model not described in detail are known to those skilled in the art.

Claims

1. A stepped door frame protective door, characterized in that, The device includes a door frame and a door body that cooperates with it. The inner side of the door frame that cooperates with the door body has a first frame surface facing the side end of the door body and a second frame surface facing the inner side of the door body. At the corner of the first frame surface and the second frame surface, there is a first stepped recess with a notch facing the side end of the door body. A sealing strip is provided in the first stepped recess. The door body includes a main keel, and a reinforcing frame is connected to the outer periphery of the main keel. The reinforcing frame includes a U-shaped frame with an opening facing the main keel. A second stepped recess is formed on the outer side of the two corners of the bottom edge of the U-shaped frame. A third stepped recess is formed on the outer side of the inner corners of the side and top edges of the U-shaped frame. A first lead plate and an inner decorative plate are arranged sequentially on the inner side of the reinforcing frame. An outer decorative plate is arranged on the inner and outer sides of the reinforcing frame. A second lead plate, which overlaps with the first lead plate, is arranged on the back side of the second frame inside the door frame.

2. The stepped door frame protective door according to claim 1, characterized in that, The sealing strip includes an L-shaped body that fits into the first stepped recess. The L-shaped body has a first inner side corresponding to the first frame surface and a second inner side corresponding to the second frame surface. A first sealing part is connected to the first inner side, and the open end of the first sealing part is set close to the first inner side in the direction of the second inner side. A second sealing part is connected to the second inner side, and the open end of the second sealing part is set close to the second inner side in the direction of the first inner side. When the door is closed, the end side of the second sealing part is squeezed and the inner side of the second sealing part is squeezed to form two seals.

3. The stepped door frame protective door according to claim 2, characterized in that, The L-shaped main body is glued to the first stepped recess on both sides away from the door body using adhesive.

4. The stepped door frame protective door according to claim 2, characterized in that, The L-shaped main body has raised portions at both ends that bend outwards, so that it can fit tightly against the first frame surface and the second frame surface.

5. The stepped door frame protective door according to claim 1, characterized in that, The bottom end of the outer decorative panel is bent toward the door body to be fastened to the third stepped recess outside the bottom edge of the reinforcing frame, and the side and top ends of the outer decorative panel are bent and fastened to the corresponding third stepped recesses on the side and top edges of the reinforcing frame. The bottom end of the inner decorative panel is bent towards the door and fastened to the third recessed part inside the bottom edge of the reinforcing frame. The side and top ends of the inner decorative panel are bent twice towards the door and abut against the outer decorative panel.

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