Anti-impact security door

Abstract

The utility model relates to an anti-impact security door. The door leaf comprises a door leaf body, the door leaf body is composed of an inner door plate, an outer door plate, a door frame assembly and hinges, a door leaf inner cavity is formed in the door leaf body, and a rectangular reinforced metal plate is further arranged in the door leaf inner cavity. The reinforced metal plate comprises an annular positioning edge, a first annular transition piece, an annular inner concave piece, a second annular transition piece, an annular outer convex piece, a third annular transition piece and a hollow part from outside to inside, an inner side heat insulation piece is tightly attached between the annular inner concave piece and the inner door plate, and an outer side heat insulation piece is tightly attached between the annular outer convex piece and the outer door plate. By means of the scheme that the reinforced metal plate is arranged inside, the shock resistance of the shock-resistant plate is better, the production process of the scheme is relatively mature and simple, and the production cost can be controlled easily. The inner side heat insulation sheet and the outer side heat insulation sheet are arranged, broken bridge arrangement can be achieved among the inner door sheet, the outer door sheet and the reinforced metal plate, and the heat insulation effect of the door is enhanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a security door, especially an impact-resistant security door. BACKGROUND

[0002] The security door is generally composed of a door leaf and a door frame, and the two are rotatably connected through a hinge. The performance of the security door, such as fire resistance, sound insulation, and impact resistance, is mainly determined by the door leaf. The door leaf of the household security door is usually a three-frame structure composed of a structural frame and inner and outer door panels, and the filling material between the structural frame and the door panels is usually foam. The door leaf of this structure is relatively light in weight, but the protective performance is relatively poor. In order to enhance the impact resistance and pry resistance of the door leaf of this type of security door, it is common to increase the steel beam support or the steel bar frame, but these two solutions will significantly increase the difficulty of the production process, increase the assembly time, and it is difficult to realize the broken bridge structure of the door leaf, which is convenient for the circulation of heat on the inner and outer sides of the door leaf, resulting in poor heat insulation of the door leaf. SUMMARY

[0003] The utility model provides an impact-resistant security door; solve the problem of the prior art that enhancing the strength of the door leaf will lead to difficulty in broken bridge design and poor heat insulation.

[0004] The above technical problems of the utility model are mainly solved by the following technical scheme: an impact-resistant security door, comprising a door leaf body, the door leaf body is composed of an inner door panel, an outer door panel, a door frame assembly and a hinge, the door frame assembly is a rectangular frame structure as a whole, the inner door panel and the outer door panel are fixedly attached to the inner and outer sides of the door frame assembly, the hinge is fixed on the long side of the door frame assembly, the inner door panel, the outer door panel and the door frame assembly define a relatively externally isolated door leaf cavity, and a rectangular enhanced sheet metal is further arranged in the door leaf cavity, the enhanced sheet metal comprises an annular positioning edge, a first annular transition piece, an annular inner recessed piece, a second annular transition piece, an annular outer convex piece, a third annular transition piece and a hollow part from outside to inside, the annular inner recessed piece is tightly attached to an inner heat insulation piece between the inner door panel, the annular outer convex piece is tightly attached to an outer heat insulation piece between the outer door panel, and the annular positioning edge is fixedly connected to the inner side of the door frame assembly.

[0005] The reinforced sheet metal in the utility model is obtained by stamping carbon steel plate, so the production process of the reinforced sheet metal is relatively mature, and the production efficiency is high and the production cost is low. The fixing of the reinforced sheet metal and the door frame assembly is also relatively simple, and the fixing requirement is not high, because the reinforced sheet metal is generally only subjected to pressure from the inner door plate and the outer door plate. The profile of the annular inner concave piece and the annular outer convex piece on the reinforced sheet metal is generally one of a circle, an ellipse and a square, and the two abut against the inner walls of the inner door plate and the outer door plate, so as to limit the deformation of the inner door plate and the outer door plate to the inside, and the local stress on one side of the door plate can be distributed to the door plate and the door frame assembly on the other side, so that the problem of local deformation of the door plate can be obviously improved. Meanwhile, the inner side heat insulation piece and the outer side heat insulation piece are arranged at the actual contact positions of the reinforced sheet metal and the inner door plate and the outer door plate, so that the inner door plate, the outer door plate and the reinforced sheet metal can be arranged in a broken bridge mode, the heat insulation piece is a poor conductor of heat, and the heat convection between the door plate and the reinforced sheet metal can be obviously reduced. Meanwhile, the material of the heat insulation piece is engineering plastic nylon or a composite material of engineering plastic nylon and glass fiber, and the heat insulation piece has the characteristics of high strength and can meet the strength requirement.

[0006] The three transition pieces on the reinforced sheet metal have the effect of enhancing the deformation resistance of the reinforced sheet metal, and the hollow part is a vacant position, and the weight of the reinforced sheet metal can be obviously reduced by missing this part, so that the cost can be reduced, and the influence on the overall strength is small.

[0007] Further, the inner side heat insulation piece and the outer side heat insulation piece are both of a porous structure, and a plurality of through holes in a honeycomb shape are formed in the inner side heat insulation piece and the outer side heat insulation piece. The through holes can reduce the self weight of the heat insulation piece under the premise that the strength is sufficient.

[0008] Further, the door frame assembly is divided into an outer door frame, an inner door frame and a heat insulation strip connected between the two door frames, the inner side of the outer door frame or the inner door frame is provided with a lap joint part, and the annular positioning edge is fixed with the lap joint part. The arrangement of the heat insulation strip makes the door frame assembly also have a broken bridge structure, and the heat insulation effect of the utility model is further enhanced.

[0009] Further, the remaining space in the door leaf inner cavity is filled with a polyurethane foaming agent. The polyurethane foaming agent has the effects of heat insulation and sound insulation.

[0010] Therefore, compared with the prior art, the utility model has the following characteristics: 1. The utility model has better impact resistance by the scheme of the built-in reinforced sheet metal, and the production process of the scheme is relatively mature and simple, so that the production cost can be controlled; 2. The inner side heat insulation piece and the outer side heat insulation piece are arranged at the actual contact positions of the reinforced sheet metal and the inner door plate and the outer door plate, so that the inner door plate, the outer door plate and the reinforced sheet metal can be arranged in a broken bridge mode, and the heat insulation effect of the utility model is enhanced. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 2 is a perspective view of the door frame assembly and the door panel according to the present application; Figure 1 Figure 3 is a perspective view of the internal structure of the door frame assembly and the door panel according to the present application;

[0012] Figure 4 is a perspective view of the door frame assembly and the door panel according to the present application; Figure 2 Figure 5 is a perspective view of the door frame assembly and the door panel according to the present application;

[0013] Figure 6 is a perspective view of the door frame assembly and the door panel according to the present application; Figure 3 Figure 7 is an enlarged view of part A of Figure 6; Figure 1 Figure 8 is a schematic view of the front and back of the reinforcing sheet metal according to the present application;

[0014] Figure 9 is a schematic view of the front and back of the reinforcing sheet metal according to the present application; Figure 4 Figure 10 is a schematic view of the front and back of the reinforcing sheet metal according to the present application;

[0015] Figure 11 is a schematic view of the front and back of the reinforcing sheet metal according to the present application; Figure 5 Figure 12 is a schematic view of the front and back of the reinforcing sheet metal according to the present application. DETAILED DESCRIPTION

[0016] The technical solutions of the present application will be further described below by way of examples and in conjunction with the accompanying drawings.

[0017] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship shown in the drawings, and are only used for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0018] Example 1: see Figure 1 and Figure 2 A kind of anti-impact security door, including door leaf body 10, door leaf body is by inner door panel 100, outer door panel 200, door frame assembly 300 and hinge 400, door frame assembly overall is rectangular frame structure, inner door panel and outer door panel are welded and fixed on the inner and outer sides of door frame assembly, hinge is riveted or bolted on the long side of door frame assembly, inner door panel, outer door panel and door frame assembly define the door leaf inner cavity 500 that is relatively circumscribed isolated, door leaf inner cavity is also provided with the reinforcing sheet metal 600 of rectangular shape, reinforcing sheet metal includes annular positioning edge 610, first annular transition piece 620, annular inner recess piece 630, second annular transition piece 640, annular outer convex piece 650, third annular transition piece 660 and hollow part 670 from outside to inside (see Figure 4 ), annular inner recess piece and inner door panel are tightly attached with inner side heat insulation sheet 710, annular outer convex piece and outer door panel are tightly attached with outer side heat insulation sheet 720, annular positioning edge is fixedly connected with the inner side of door frame assembly.

[0019] The reinforcing sheet metal in the embodiment is formed by stamping a carbon steel plate, so the production process of the reinforcing sheet metal is relatively mature, and the production efficiency is high and the production cost is low. Meanwhile, the fixing of the reinforcing sheet metal and the door frame assembly is relatively simple, and the fixing requirement is not high, because the reinforcing sheet metal is generally only subjected to the pressure from the inner door panel and the outer door panel. The profiles of the annular inner recessed piece and the annular outer protruding piece on the reinforcing sheet metal are rectangular, and the two abut against the inner walls of the inner door panel and the outer door panel, so as to limit the deformation of the inner door panel and the outer door panel to the inside, and meanwhile, the local stress on one side of the door panel can be distributed to the other side of the door panel and the door frame assembly, so that the local deformation of the door panel can be obviously improved. Meanwhile, the inner side heat insulation piece and the outer side heat insulation piece are arranged at the actual contact positions of the reinforcing sheet metal and the inner door panel and the outer door panel, so that the inner door panel, the outer door panel and the reinforcing sheet metal can be arranged in a broken bridge mode, and the heat insulation piece is a poor conductor of heat, so that the heat convection between the door panel and the reinforcing sheet metal can be obviously reduced. Meanwhile, the material of the heat insulation piece is engineering plastic nylon, or even a composite material of engineering plastic nylon and glass fiber, and has the characteristics of high strength, so as to meet the strength requirement.

[0020] The three transition pieces on the reinforcing sheet metal have the effect of enhancing the deformation resistance of the reinforcing sheet metal, and the hollow part is a missing part, and the missing of this part can obviously reduce the weight of the reinforcing sheet metal, which is beneficial to reduce the cost and has little effect on the overall strength.

[0021] See Figure 1 The annular inner recessed piece is provided with an inner annular positioning groove 631 recessed to the side of the outer door panel, and the inner side heat insulation piece is clamped in the inner annular positioning groove. The annular outer protruding piece is provided with an outer annular positioning groove 651 recessed to the side of the inner door panel, and the outer side heat insulation piece is clamped in the outer annular positioning groove.

[0022] See Figure 5 The inner side heat insulation piece and the outer side heat insulation piece are both porous structures, and a plurality of through holes 701 in a honeycomb shape are formed in the inner side and the outer side. The through holes can reduce the self weight of the heat insulation piece on the premise that the strength is sufficient.

[0023] See Figure 3 The door frame assembly is divided into an outer door frame 310, an inner door frame 320 and a heat insulation strip 330 connected between the two door frames, and the inner side of the outer door frame is provided with a lap joint part 340, and the annular positioning edge is bolted with the lap joint part. The arrangement of the heat insulation strip makes the door frame assembly also have a broken bridge structure, which further enhances the heat insulation effect of the embodiment.

[0024] The remaining space in the door leaf inner cavity is filled with a polyurethane foaming agent. The polyurethane foaming agent has the effects of heat insulation and sound insulation.

[0025] It will be apparent to those skilled in the art that modifications can be made to the embodiments described above without departing from the scope of the present application. All such modifications are intended to be included within the scope of the present application.

Claims

1. An impact-resistant security door, comprising a door leaf body, characterized in that: The door panel body consists of an inner door panel, an outer door panel, a door frame assembly, and hinges. The door frame assembly is a rectangular frame structure. The inner door panel and the outer door panel are fixedly attached to the inner and outer sides of the door frame assembly. The hinges are fixed to the long side of the door frame assembly. The inner door panel, the outer door panel, and the door frame assembly define a relatively externally isolated door panel cavity. The door panel cavity also has a rectangular reinforcing sheet metal. The reinforcing sheet metal includes, from the outside to the inside, an annular positioning edge, a first annular transition piece, an annular concave piece, a second annular transition piece, an annular convex piece, a third annular transition piece, and a hollow portion. An inner heat insulation sheet is tightly attached between the annular concave piece and the inner door panel. An outer heat insulation sheet is tightly attached between the annular convex piece and the outer door panel. The annular positioning edge is fixedly connected to the inner side of the door frame assembly.

2. The impact-resistant security door according to claim 1, characterized in that: The annular concave plate has an inner annular positioning groove recessed towards the outer door panel, and the inner heat insulation sheet is fixed to the inner annular positioning groove; the annular outer concave plate has an outer annular positioning groove recessed towards the inner door panel, and the outer heat insulation sheet is fixed to the outer annular positioning groove.

3. The impact-resistant security door according to claim 1 or 2, characterized in that: Both the inner and outer heat insulation sheets have a porous structure with several honeycomb-shaped through holes running through their inner and outer sides.

4. The impact-resistant security door according to claim 1, characterized in that: The door frame assembly is divided into an outer door frame, an inner door frame, and a heat insulation strip connecting the two door frames. The inner side of the outer door frame or the inner door frame is provided with an overlapping part, and the annular positioning edge is fixed to the overlapping part.

5. The impact-resistant security door according to claim 1, characterized in that: The remaining space inside the door leaf cavity is filled with polyurethane foam.

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