Door frame structure, entrance door and primary-secondary door

Abstract

The utility model discloses a door frame structure, an entrance door and a primary and secondary door, and belongs to the technical field of doors and windows, the door frame structure comprises a main frame, a long sealing edge and a short sealing edge, the main frame comprises two cross beams and two vertical stiles, and a rectangular structure is defined by the two cross beams and the two vertical stiles; the cross beams and the vertical beams are made of aluminum profiles with the same section structure; the aluminum profile comprises a main body part and a connecting part, the connecting part is arranged on the outer side of the main body part, two steps are formed by the two sides of the connecting part and the main body part, the two steps are provided with clamping hooks respectively, and the aluminum profile is axially symmetric about the center line of the aluminum profile; the long sealing edge is installed on the indoor side or the outdoor side of the main frame, and the long sealing edge and the clamping hook are buckled and fixed. The short sealing edge is installed on the outdoor side or the indoor side of the main frame, and the short sealing edge and the clamping hook are buckled and fixed. The automatic assembling device has the advantages of higher assembling efficiency, difficulty in making mistakes and low cost.

Description

Technical Field

[0001] This utility model relates to the field of door and window technology, and in particular to a door frame structure, an entrance door, and a double door. Background Technology

[0002] Aluminum alloy entrance doors are increasingly popular due to their attractive design, reliable quality, and good sound and heat insulation properties. However, current aluminum alloy entrance doors have an integrated frame structure with the edge banding, which presents certain inconveniences in actual production. For example, when assembling the frame, the indoor and outdoor sides of the aluminum profiles need to be distinguished before assembly. Therefore, if an aluminum profile is installed backwards during the process of forming the frame, it needs to be disassembled and reassembled, causing inconvenience to production. Utility Model Content

[0003] The purpose of this utility model is to propose a door frame structure, an entrance door, and a double door to solve the above-mentioned problems.

[0004] To achieve this objective, the present invention adopts the following technical solution:

[0005] A door frame structure includes a main frame, a long edge band, and a short edge band. The main frame includes two horizontal beams and two vertical beams, forming a rectangular structure. The horizontal beams and vertical beams are aluminum profiles with identical cross-sectional structures. Each aluminum profile includes a main body and a connecting part. The connecting part is located on the outside of the main body, and its two sides form two steps with the main body. Each of the two steps is provided with a hook. The aluminum profile is symmetrical about its own centerline. The long edge band is installed on the indoor or outdoor side of the main frame and is fastened and fixed to the hooks. The short edge band is installed on the outdoor or indoor side of the main frame and is fastened and fixed to the hooks.

[0006] Preferably, the long edge banding is installed on one side of the main frame, and the short edge banding is installed on the other side of the door frame;

[0007] Alternatively, one of the vertical members of the main frame is equipped with the long edge banding on the indoor side and the long edge banding on the outdoor side, while the other vertical member and the two horizontal beams are equipped with the short edge banding on the indoor side and the long edge banding on the outdoor side.

[0008] Preferably, one side of the long sealing edge is provided with a first buckle that cooperates with the hook, and the other side is provided with a first baffle. The first buckle and the first baffle extend in opposite directions. The long sealing edge is provided with a sealing groove on the side of the first buckle. The opening of the sealing groove faces the first baffle. A sealing strip is installed in the sealing groove.

[0009] Preferably, the short sealing edge includes a second baffle and a second buckle that cooperates with the hook, wherein the second buckle has an L-shaped structure and is disposed on one side of the second baffle.

[0010] Preferably, the long edge and / or the short edge installed on the same side of the main frame are connected end to end, so that the first baffle and / or the second baffle form an installation space.

[0011] Preferably, the short sealing edge connected to the long sealing edge has notches at both ends of its second buckle.

[0012] Preferably, both ends of the crossbeam and both ends of the vertical rod are beveled at 45°.

[0013] An entrance door includes a door frame and a door body. The door body is hinged within the door frame. The door body includes a door frame, an exterior panel, and an interior panel. The door frame adopts the door frame structure described above. The exterior side of the door frame is equipped with the short / long edge banding, and the interior side of the door frame is equipped with the long / short edge banding. The exterior panel is installed on the exterior side of the door frame, and the interior panel is installed on the interior side of the door frame.

[0014] A double door includes a double door frame, a child door, and a mother door. The child door and the mother door are hinged to the inner sides of the double door frame. The child door includes a child door frame, a child door exterior panel, and a child door interior panel. The child door frame adopts the door frame structure described above, and the two horizontal beams and the vertical beams away from the mother door of the child door frame are equipped with the short / long edge banding on the interior side and the long / short edge banding on the exterior side. The vertical beams of the child door frame near the mother door are equipped with the long / short edge banding on the interior side and the short / long edge banding on the exterior side. The child door interior panel and the child door exterior panel are respectively installed on the interior and exterior sides of the child door frame.

[0015] The main door includes a main door frame, an exterior main door panel, and an interior main door panel; therefore, the main door frame adopts the frame structure described above, with the long edge banding / short edge banding installed on the interior side of the main door frame and the short edge banding / long edge banding installed on the exterior side; the interior main door panel and the exterior main door panel are respectively installed on the interior and exterior sides of the main door frame.

[0016] Preferably, the short sealing edge of the crossbeam installed on the sub-door frame has notches at both ends of the second buckle, and the second baffle is connected to the long vertical sealing edge of the sub-door frame near the mother door.

[0017] The short, vertical sealing edge installed on the side of the sub-door frame near the main door has notches at both ends of its second buckle, and the second baffle is connected to the long sealing edge of the crossbeam installed on the sub-door frame.

[0018] One embodiment of this utility model has the following beneficial effects:

[0019] 1. By adopting a separate structure for the main frame, long edge banding, and short edge banding, and with the aluminum profiles that make up the main frame having an axially symmetrical structure, there is no need to consider the indoor and outdoor sides of the aluminum profiles when assembling them into the main frame. After the aluminum profiles are assembled, the long edge banding and short edge banding are then assembled to the two sides of the main frame respectively. This avoids the problem of having to disassemble and reassemble the main frame due to incorrect assembly, resulting in higher assembly efficiency and less error.

[0020] 2. Both the long and short edge bandings are fixed to the main frame using a snap-fit ​​method. If the long or short edge bandings are installed incorrectly, they can be quickly disassembled and reinstalled in the correct position, thereby improving production efficiency.

[0021] 3. The long and short edge bandings are separate from the main frame, which makes them more flexible in actual production applications. Attached Figure Description

[0022] The accompanying drawings further illustrate the present invention, but the content of the drawings does not constitute any limitation on the present invention.

[0023] Figure 1 This is a schematic diagram of the main frame structure of one embodiment of the present invention;

[0024] Figure 2 This is a cross-sectional structural schematic diagram of an aluminum profile according to one embodiment of the present utility model;

[0025] Figure 3 This is a cross-sectional view of the door frame structure according to one embodiment of the present utility model;

[0026] Figure 4 This is a three-dimensional structural diagram of the short sealing edge according to one embodiment of the present utility model;

[0027] Figure 5 This is a three-dimensional structural diagram of the long sealing edge of one embodiment of the present utility model;

[0028] Figure 6 This is a three-dimensional structural diagram of a short sealing edge with notches at both ends, according to one embodiment of the present invention.

[0029] Figure 7 This is a cross-sectional view of the entrance door according to one embodiment of the present utility model;

[0030] Figure 8 This is a cross-sectional structural schematic diagram of a mother-daughter door according to one embodiment of the present utility model;

[0031] Figure 9 This is a cross-sectional structural diagram of a sub-gate according to one embodiment of the present invention;

[0032] Figure 10 This is a partial three-dimensional structural diagram of a sub-gate according to one embodiment of the present invention;

[0033] In the attached diagram: 1-Main frame, 11-Horizontal beam, 12-Vertical support, 2-Long edge banding, 21-First buckle, 22-First baffle, 23-Sealing groove, 3-Short edge banding, 31-Second baffle, 32-Second buckle, 33-Notch, 4-Aluminum profile, 41-Main body, 42-Connecting part, 43-Step, 44-Hook, 5-Sealing strip, 6-Door frame, 7-Door body, 71-Door frame, 72-Outdoor panel, 73-Indoor panel, 8-Mother and daughter door frame, 9-Daughter door, 91-Daughter door frame, 92-Daughter door exterior panel, 93-Daughter door interior panel, 10-Mother door, 101-Mother door frame, 102-Mother door exterior panel, 103-Mother door interior panel, a-Central axis. Detailed Implementation

[0034] The embodiments of this utility model are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model. In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "multiple" means two or more, unless otherwise explicitly specified.

[0035] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows for communication; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0036] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0037] The following disclosure provides many different embodiments or examples for implementing various structures of this invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0038] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0039] The first aspect of this utility model discloses a door frame 71 structure, such as Figure 1-5 As shown, the door frame 71 structure includes a main frame 1, a long edge band 2, and a short edge band 3, as follows: Figure 1 As shown, the main frame 1 includes two horizontal beams 11 and two vertical supports 12, forming a rectangular structure; the horizontal beams 11 and vertical supports 12 are aluminum profiles 4 with the same cross-sectional structure; as shown... Figure 2As shown, the aluminum profile 4 includes a main body 41 and a connecting part 42. The connecting part 42 is disposed on the outside of the main body 41. Two steps 43 are formed on both sides of the connecting part 42 and the main body 41. Each of the two steps 43 is provided with a hook 44. The aluminum profile 4 is symmetrical about its own centerline. Figure 3 and Figure 5 As shown, the long edge banding 2 is installed on the indoor or outdoor side of the main frame 1, and the long edge banding 2 is fastened and fixed to the hook 44; as Figure 3 and Figure 4 As shown, the short sealing edge 3 is installed on the outdoor or indoor side of the main frame 1, and the short sealing edge 3 is fastened and fixed to the hook 44.

[0040] The door frame 71 structure of this utility model adopts a split structure for the main frame 1, the long edge banding 2, and the short edge banding 3. Furthermore, the aluminum profile 4 constituting the main frame 1 has an axially symmetrical structure. Therefore, when assembling the aluminum profile 4 into the main frame 1, there is no need to consider the indoor and outdoor sides of the aluminum profile 4. After the aluminum profile 4 is assembled, the long edge banding 2 and the short edge banding 3 are then assembled to the two sides of the main frame 1 respectively. This avoids the problem of needing to disassemble and reassemble the main frame 1 due to incorrect installation, resulting in higher assembly efficiency and less error. In addition, since the long edge banding 2 and the short edge banding 3 are fixed to the main frame 1 by snap-fit, if the long edge banding 2 or the short edge banding 3 is installed incorrectly, it can be quickly disassembled and reinstalled in the correct position, thereby improving production efficiency. Moreover, since the long edge banding 2 and the short edge banding 3 are separate from the main frame 1, in practice… In practical production applications, it is also more flexible. For example, in the mother-daughter door 10, the door frame 71 of the daughter door 9 is on the side closer to the mother door 10 and needs to act as a center mullion so that it can be effectively supported and sealed when the mother door 10 is closed. Therefore, the long edge 2 and the short edge 3 of the door frame 71 of the daughter door 9 on the side closer to the mother door 10 need to be installed in reverse. The door frame 71 structure of this utility model can achieve this well, so there is no need to set up a false center mullion, thereby simplifying the structure of the mother-daughter door 10 and further reducing the cost of the mother-daughter door 10. The two sides of the connecting part 42 form two steps 43 with the main body part 41. With this setting, the step 43 on the side with the short edge 3 can serve as a limiting surface, pressing against the sealing strip 5 on the door frame 6 when the door is closed, thereby playing a limiting and sealing role.

[0041] As one implementation method, such as Figure 3 As shown, the long edge banding 2 is installed on one side of the main frame 1, and the short edge banding 3 is installed on the other side of the door frame 71;

[0042] In the single-door entrance door and the mother door 10 of the mother door 10, the four edges of the door are pressed against the door frame 6 or the daughter door 9 in the same direction. For example, in the inward-opening entrance door, the four edges of the door are pressed against the door frame 6 or the daughter door 9 from the inside out, while for the outward-opening entrance door, the four edges of the door are pressed against the door frame 6 or the daughter door 9 from the outside in. Therefore, depending on the actual installation of the door, the same edge banding is installed on the same side of the main frame 1, while another edge banding is installed on the other side of the main frame 1.

[0043] In another implementation, such as Figure 8 and Figure 9 As shown, one of the vertical members 12 of the main frame 1 is equipped with the long edge band 2 on the indoor side and the long edge band 2 on the outdoor side. The other vertical member 12 and the two horizontal beams 11 are equipped with the short edge band 3 on the indoor side and the long edge band 2 on the outdoor side.

[0044] For example, in the off-axis entrance door and the child door 9 of the mother door 10, since the directions of the vertical studs 12 on both sides of the door pressing against the door frame 6 or the mother door 10 are exactly opposite, the structures of the vertical studs 12 on both sides of the door are also exactly opposite. Therefore, in the door frame 71 structure of this utility model, it is only necessary to change the installation positions of the long sealing edge 2 and the short sealing edge 3 of one side of the vertical stud 12 to adapt to the structural requirements of the child door 9 of the off-axis entrance door and the mother door 10. The installation requirements of various doors can be realized without re-molding. Therefore, the door frame 71 structure has great compatibility and can easily realize the structure of various types of doors, so that various doors can share a set of molds, which can greatly save the factory's mold opening costs and reduce material preparation costs.

[0045] Furthermore, such as Figure 5 As shown, one side of the long sealing edge 2 is provided with a first buckle 21 that cooperates with the hook 44, and the other side is provided with a first baffle 22. The first buckle 21 and the first baffle 22 extend in opposite directions. The long sealing edge 2 is provided with a sealing groove 23 on the side of the first buckle 21. The opening of the sealing groove 23 faces the first baffle 22. A sealing strip 5 is installed in the sealing groove 23.

[0046] With this setting, the long edge banding 2 can be fastened and installed by the first buckle 21 and the hook 44, so that the long edge banding 2 can be conveniently and securely installed on the aluminum profile 4. Since the long edge banding 2 is not only used to seal the panel installed on the door frame 71 structure, but also needs to play a role in limiting and sealing, installing the sealing strip 5 in the sealing groove 23 of the long edge banding 2 can play a better sealing role.

[0047] Furthermore, such as Figure 4As shown, the short sealing edge 3 includes a second baffle 31 and a second buckle 32 that cooperates with the hook 44. The second buckle 32 has an L-shaped structure and is disposed on one side of the second baffle 31.

[0048] Similarly, the short edge banding 3 can be fastened to the hook 44 via the second buckle 32, thereby conveniently and securely fixing the short edge banding 3 onto the aluminum profile 4.

[0049] Furthermore, such as Figure 3 , Figure 7 , Figure 8 , Figure 9 and Figure 10 As shown, the long sealing edge 2 and / or the short sealing edge 3 installed on the same side of the main frame 1 are connected end to end so that the first baffle 22 and / or the second baffle 31 form an installation space.

[0050] With this configuration, the interior panel 73 or the exterior panel 72 of the door can be installed in the installation space. The first baffle 22 and / or the second baffle 31 surrounding the first space can limit and block the interior panel 73 or the exterior panel 72, so that the interior panel 73 and the exterior panel 72 can be embedded in the door frame 71 structure, making the door more integrated.

[0051] Furthermore, such as Figure 6 and Figure 10 As shown, the short sealing edge 3 connected to the long sealing edge 2 has notches 33 at both ends of its second buckle 32.

[0052] The notches 33 at both ends of the second buckle 32 can make way so that the second baffle 31 can extend to both ends and connect with the first baffle 22 of the adjacent long edge 2, thereby realizing the setting of two different edge bands on the same side, and can also completely enclose an installation space for installing the indoor panel 73 or the outdoor panel 72.

[0053] After the main frame 1 is assembled, the hooks 44 of each crossbeam 11 and vertical mullion 12 will form a U-shape. Therefore, both ends of the long edge banding 2 are beveled at 45°. When two adjacent long edge bandings 2 are connected, the 45° bevel ensures that the joint between the two edge bandings is at the corner, making the joint invisible from the side. However, when the long edge banding 2 is connected to the short edge banding 3, such as... Figure 10 As shown, this design prevents the first buckle 21 from being too long and interfering with the hook 44. Furthermore, the 45° bevel cutting method simplifies the manufacturing process and increases efficiency.

[0054] Furthermore, both ends of the crossbeam 11 and both ends of the vertical rod 12 are obliquely cut at 45°.

[0055] With this configuration, the crossbeam 11 and the vertical rod 12 are joined at a 90° angle, so the seam is not visible from the side and there is no need to use end caps, further saving production costs; the crossbeam 11 and the vertical rod 12 can be connected by corner brackets.

[0056] The second aspect of this utility model discloses an entrance door, such as... Figure 3 and Figure 7 As shown, the door includes a door frame 6 and a door body 7. The door body 7 is installed inside the door frame 6 by hinges. The door body 7 includes a door frame 71, an exterior panel 72, and an interior panel 73. The door frame 71 adopts the door frame 71 structure as described above. The exterior side of the door frame 71 is equipped with the short edge band 3 / long edge band 2, and the interior side of the door frame 71 is equipped with the long edge band 2 / short edge band 3. The exterior panel 72 is installed on the exterior side of the door frame 71, and the interior panel 73 is installed on the interior side of the door frame 71.

[0057] By installing a short sealing edge 3 on the outdoor side and a long sealing edge 2 on the indoor side, when the door is closed, the long sealing edge 2 and the step 43 on the side with the short sealing edge 3 press against the door frame 6, thereby achieving limiting and sealing. Of course, to achieve a better sealing effect, a sealing strip 5 can also be installed on the door frame 6 at the position corresponding to the step 43, thereby achieving double sealing and better sound insulation and heat preservation. When the door 7 is opened to the inside, the long sealing edge 2 and the step 43 on the side with the short sealing edge 3 leave the door frame 6, so that the door 7 can be opened smoothly. Of course, as an equivalent technical solution, if the entrance door has an outward opening structure, it is only necessary to install the long sealing edge 2 on the outdoor side of the main frame 1 and the short sealing edge 3 on the indoor side of the main frame 1.

[0058] The third aspect of this utility model discloses a mother-daughter gate 10, such as... Figure 8 and Figure 9 As shown, the system includes a set of 10 sets of mother and daughter doors 8, a daughter door 9, and a mother door 10. The daughter door 9 and the mother door 10 are hinged to the inner sides of the set of 10 sets of mother and daughter doors 8. The daughter door 9 includes a daughter door frame 91, a daughter door exterior panel 92, and a daughter door interior panel 93. The daughter door frame 91 adopts the door frame 71 structure as described above. The two horizontal beams 11 of the daughter door frame 91 and the vertical beams 12 away from the mother door 10 are equipped with the short edge band 3 / long edge band 2 on the interior side and the long edge band 2 / short edge band 3 on the exterior side. The vertical beams 12 of the daughter door frame 91 near the mother door 10 are equipped with the long edge band 2 / short edge band 3 on the interior side and the short edge band 3 / long edge band 2 on the exterior side. The daughter door interior panel 93 and the daughter door exterior panel 92 are respectively installed on the interior and exterior sides of the daughter door frame 91.

[0059] The main door 10 includes a main door frame 101, a main door exterior panel 102, and a main door interior panel 103; therefore, the main door frame 101 adopts the door frame 71 structure as described above. The main door frame 101 has the long sealing edge 2 / short sealing edge 3 installed on the interior side and the short sealing edge 3 / long sealing edge 2 installed on the exterior side; the main door interior panel 103 and the main door exterior panel 102 are respectively installed on the interior and exterior sides of the main door frame 101.

[0060] Because this utility model adopts a separate structure for the edge banding and the main frame 1, and the long edge banding 2 and the short edge banding 3 are installed in opposite positions on the two vertical studs 12 of the sub-door 9, the sub-door 9 can not only open and close, but also the vertical stud 12 on the side of the sub-door 9 closer to the mother door 10 can act as a false center stud to limit and seal the mother door 10. The main frame 1 of the sub-door 9 and the mother door 10 uses only the same aluminum profile 4, and the long edge banding 2 and the short edge banding 3 are also made of the same aluminum profile 4. Therefore, the sub-door 10 of this utility model can effectively reduce production costs and raw material inventory costs.

[0061] Furthermore, such as Figure 6 and Figure 10 As shown, the short sealing edge 3 of the crossbeam 11 installed on the sub-door frame 91 has notches 33 at both ends of the second buckle 32, and the second baffle 31 is connected to the long sealing edge 2 of the vertical rod 12 on the side of the sub-door frame 91 near the mother door 10.

[0062] The short sealing edge 3 of the vertical 12 installed on the side of the sub-door frame 91 near the mother door 10 has notches 33 at both ends of its second buckle 32, and the second baffle 31 is connected to the long sealing edge 2 of the crossbeam 11 installed on the sub-door frame 91.

[0063] In a double-leaf door 10, a false center mullion is typically installed on the side of the child door 9 closest to the mother door 10. This allows the side of the mother door 10 closest to the child door 9 to press against the false center mullion when the door is closed, ensuring a better seal. However, because the edge sealing of the false center mullion differs from the edge sealing of other edges of the child door 9, the edge sealing of the false center mullion cannot perfectly connect with the edge sealing of other edges of the child door 9. In existing double-leaf doors 10, the false center mullion of the child door 9 is typically connected at its top to the lower part of the upper crossbeam 11 of the child door 9, and at its bottom to the upper part of the lower crossbeam 11 of the child door 9. That is, the false center mullion is sandwiched between the upper and lower crossbeams 11, and the ends of the upper and lower crossbeams 11 are sealed with end caps. The edge sealing of the child door 9 near the mother door 10 usually has seams at the top and bottom, making it impossible to achieve a seamless edge sealing structure. This invention extends both ends of the short edge sealing 3, allowing the second baffle 31 of the short edge sealing 3 to connect with the first baffle 22 of the long edge sealing 2. This enables the installation space to be completely enclosed on both sides of the child door frame 91, thus completely sealing the perimeter of the inner panel 73 and the outer panel 72 of the child door without the need for end caps. Viewed from the side of the child door 9, the edge sealing completely covers the sides of the inner panel 73 and the outer panel 72 of the child door, achieving a seamless edge sealing structure. This solves the problem of seams on the edge sealing of the child door 9 near the mother door 10 in current mother-child doors 10.

[0064] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0065] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this utility model without inventive effort, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A door frame structure, characterized in that, The door frame structure includes a main frame, a long edge band, and a short edge band. The main frame includes two horizontal beams and two vertical beams, forming a rectangular structure. The horizontal beams and vertical beams are aluminum profiles with the same cross-sectional structure. The aluminum profile includes a main body and a connecting part. The connecting part is located on the outside of the main body, and the two sides of the connecting part form two steps with the main body. Each of the two steps is provided with a hook. The aluminum profile is symmetrical about its own centerline. The long edge band is installed on the indoor or outdoor side of the main frame and is fastened and fixed with the hooks. The short edge band is installed on the outdoor or indoor side of the main frame and is fastened and fixed with the hooks.

2. The door frame structure according to claim 1, characterized in that: The long edge banding is installed on one side of the main frame, and the short edge banding is installed on the other side of the door frame; Alternatively, one of the vertical members of the main frame is equipped with the long edge banding on the indoor side and the long edge banding on the outdoor side, while the other vertical member and the two horizontal beams are equipped with the short edge banding on the indoor side and the long edge banding on the outdoor side.

3. A door frame structure according to claim 2, characterized in that, One side of the long sealing edge is provided with a first buckle that cooperates with the hook, and the other side is provided with a first baffle. The first buckle and the first baffle extend in opposite directions. The long sealing edge is provided with a sealing groove on the side of the first buckle. The opening of the sealing groove faces the first baffle, and a sealing strip is installed in the sealing groove.

4. A door frame structure according to claim 3, characterized in that, The short sealing edge includes a second baffle and a second buckle that cooperates with the hook. The second buckle has an L-shaped structure and is located on one side of the second baffle.

5. A door frame structure according to claim 4, characterized in that, The long edge and / or the short edge, which are installed on the same side of the main frame, are connected end to end so that the first baffle and / or the second baffle form an installation space.

6. A door frame structure according to claim 5, characterized in that, The short sealing edge connected to the long sealing edge has notches at both ends of its second buckle.

7. A door frame structure according to any one of claims 1-6, characterized in that, Both ends of the crossbeam and both ends of the vertical rod are obliquely cut at 45°.

8. An entrance door, characterized in that, The device includes a door frame and a door body. The door body is hinged within the door frame. The door body includes a door frame, an exterior panel, and an interior panel. The door frame adopts the door frame structure as described in any one of claims 1-5. The exterior side of the door frame is equipped with the short edge banding / long edge banding, and the interior side of the door frame is equipped with the long edge banding / short edge banding. The exterior panel is installed on the exterior side of the door frame, and the interior panel is installed on the interior side of the door frame.

9. A type of mother-daughter gate, characterized in that, The system includes a mother-daughter door frame, a child door, and a mother door. The child door and the mother door are hinged to the inner sides of the mother-daughter door frame. The child door includes a child door frame, a child door exterior panel, and a child door interior panel. The child door frame adopts the door frame structure as described in any one of claims 1-7. The two horizontal beams and the vertical beams away from the mother door of the child door frame are equipped with the short / long edge banding on the interior side and the long / short edge banding on the exterior side. The vertical beams of the child door frame near the mother door are equipped with the long / short edge banding on the interior side and the short / long edge banding on the exterior side. The child door interior panel and the child door exterior panel are respectively installed on the interior and exterior sides of the child door frame. The main door includes a main door frame, an exterior main door panel, and an interior main door panel; therefore, the main door frame adopts the door frame structure as described in any one of claims 1-5, and the interior side of the main door frame is equipped with the long edge sealing / short edge sealing, and the exterior side is equipped with the short edge sealing / long edge sealing; the interior main door panel and the exterior main door panel are respectively installed on the interior and exterior sides of the main door frame.

10. A mother-daughter gate according to claim 9, characterized in that, The short sealing edge of the crossbeam installed on the sub-door frame has notches at both ends of the second buckle, and the second baffle is connected to the long sealing edge of the vertical section of the sub-door frame near the mother door. The short, vertical sealing edge installed on the side of the sub-door frame near the main door has notches at both ends of its second buckle, and the second baffle is connected to the long sealing edge of the crossbeam installed on the sub-door frame.

Images