Door and window invisible strip structure

Abstract

The door and window invisible splicing strip structure belongs to the technical field of door and window structure, and particularly relates to a door and window invisible splicing strip structure. The door and window invisible splicing strip structure is convenient to assemble and has good appearance effect. The door and window invisible splicing strip structure comprises two profile frames which are oppositely arranged and have the same structure, and each of the two profile frames comprises an outer frame, a broken bridge structure and an inner frame. The outer frame edge and the inner frame edge are both provided with a frame slot, and a U-shaped hidden splicing strip matched with the frame slot is arranged in the frame slot. The two profile frames and the hidden splicing strip are connected and integrated through mounting nails.

Description

Technical Field

[0001] This utility model belongs to the field of door and window structure technology, specifically relating to a hidden splicing structure for doors and windows. Background Technology

[0002] With the increasing diversification of modern architectural styles, the forms of exterior doors and windows are also showing a diversified development trend. From casement windows to sliding windows, from fixed windows to combination windows, door and window products with different structures, materials, and functions often need to be combined and installed in the same building opening. Especially in large-span openings or special shapes, where the proportion of doors and windows is constantly increasing and the opening size is significantly longer, adopting a scientific and reasonable mullion scheme becomes particularly important. This requires comprehensive consideration of multiple factors: ensuring the structural stability of the joints to achieve a perfect connection, optimizing the design to make the joint surface as slender and aesthetically pleasing as possible; at the same time, it is also necessary to consider the convenience of processing and installation efficiency, as well as the sealing and waterproofing performance of the overall structure. Only by comprehensively balancing these technical points can a door and window mullion solution that meets both architectural aesthetic requirements and excellent performance be achieved.

[0003] Existing solutions mainly suffer from two types of problems: one is the direct splicing method, such as... Figure 4 As shown, the two frames are directly connected. Due to the lack of precise positioning benchmarks inside and outside the structure, it is very easy for the splicing surfaces to be misaligned or mismatched, resulting in a decrease in sealing performance and aesthetics.

[0004] Secondly, a concealed splicing connection process is adopted, such as... Figure 5 As shown, although this structure can avoid exposed defects, it requires multiple fixing nails to be densely driven at the splicing points, which not only increases the processing time, but also requires step-by-step operation - first complete the independent connection of the mullion profiles, and then perform secondary assembly with the window frame. The process is complicated and requires high precision. Utility Model Content

[0005] This utility model addresses the aforementioned problems by providing a concealed splicing structure for doors and windows that is easy to assemble and has a good appearance.

[0006] The present invention adopts the following technical solution: the present invention includes two profile frames arranged opposite to each other. The two profile frames have the same structure, both including an outer frame, a thermal break structure and an inner frame. The feature is that: the edges of the outer frame and the edges of the inner frame are provided with frame grooves, and U-shaped hidden strips that cooperate with the frame grooves are provided in the frame grooves; the two profile frames and the hidden strips are connected as one piece by mounting nails.

[0007] As a preferred embodiment of this utility model, the frame groove includes two supporting sides disposed on the edges of the outer frame and the inner frame; the ends of the supporting sides are provided with hooks opposite each other; and the opening end of the hidden strip is provided with a protrusion that cooperates with the hooks.

[0008] Furthermore, a glue groove is provided on the side where the two hooks contact and cooperate with the hidden splice; sealant is provided in the glue groove.

[0009] As another preferred embodiment of this utility model, after the two profile frames are connected, thermal insulation material is provided in the cavity corresponding to the broken bridge structure.

[0010] As a third preferred embodiment of the present invention, the outer frame and the inner frame are provided with cavities relative to the side frame groove, and the mounting nail is disposed in the cavity of one outer frame or the inner frame, passes through the side frame groove and the hidden strip, and its end is disposed in the cavity of the other outer frame or the inner frame.

[0011] Compared with the prior art, the present invention has the following advantages: 1. Stable splicing and precise positioning: By setting the frame groove on the edge of the outer frame and the inner frame, and installing the matching U-shaped hidden splicing strip in the groove, the two profile frames can achieve automatic positioning and snap-fit ​​during splicing, avoiding the problems of misalignment and uneven surface that occur in traditional splicing, and significantly improving the splicing accuracy.

[0012] 2. Easy and efficient installation: The hidden splicing strip can be pre-installed by simply inserting or snapping it into the groove of one side frame. It can then be quickly fixed by connecting it with mounting nails. This reduces the need for additional processing and pre-installation steps on the profiles, simplifies the overall assembly process, and greatly improves installation efficiency.

[0013] 3. Excellent sealing performance: The two hooks are fitted with a groove on the side where they meet the hidden splice, and the groove is filled with sealant. This forms a continuous sealing layer after splicing, effectively preventing rainwater, air and dust from seeping in from the splice seam, and significantly improving the water tightness and air tightness of the doors and windows.

[0014] 4. Improved thermal insulation performance: After the two profile frames are connected, thermal insulation material is filled into the cavity corresponding to the thermal break structure to form a complete thermal insulation layer, which effectively blocks the indoor and outdoor heat conduction path, thereby improving the thermal insulation performance of the overall door and window system and meeting the requirements of energy-saving buildings.

[0015] 5. Simple and beautiful appearance: The hidden splicing strips are completely embedded in the frame groove, with no exposed parts at the splicing points. The door and window seams are flat and smooth, and the overall appearance is more integrated, which meets the design requirements of modern architecture for simplicity and beauty.

[0016] 6. High structural strength and reliable use: The mounting nails penetrate the cavity of the outer or inner frame and fix the hidden splice strip, so that the two profile frames form a reliable mechanical connection; the double-sided snap-fit ​​structure between the splice strip and the frame groove further improves the tensile and shear strength of the connection, and the overall structure is stable and reliable, and is not easy to loosen or deform after long-term use. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] Figure 2 This is a cross-sectional view of the present invention.

[0019] Figure 3 yes Figure 2 A magnified view of a portion of the image.

[0020] Figures 4-5 This is a schematic diagram of the existing door and window frame structure.

[0021] In the attached diagram, 1 is the profile frame, 2 is the inner frame, 3 is the hidden splice strip, 4 is the mounting nail, 5 is the cavity, 6 is the insulation material, 7 is the frame groove, 8 is the support edge, 9 is the sealant, 10 is the protrusion, 11 is the hook, and 12 is the outer frame. Detailed Implementation

[0022] This utility model includes two opposing profile frame frames 1, both with identical structures, each including an outer frame 12, a thermal break structure, and an inner frame 2. Both the outer frame 12 and the inner frame 2 have frame grooves 7 along their edges. A U-shaped hidden strip 3, which mates with the frame groove 7, is disposed within each groove. The two profile frame frames 1 and the hidden strip 3 are connected as a single unit by mounting nails 4. By incorporating the U-shaped hidden strip 3 within the two profile frame frames 1 and connecting them with mounting nails 4, the two frames can be quickly and accurately positioned during splicing, resulting in a smooth seam and a stable structural connection. This solution requires no additional processing of the profiles, simplifies assembly steps, and increases installation efficiency. Furthermore, the hidden strip 3 is embedded within the frame groove 7, eliminating exposed connectors at the splicing point and significantly improving the overall aesthetics.

[0023] The frame groove 7 includes two supporting edges 8 located at the edges of the outer frame 12 and the inner frame 2; hooks 11 are provided opposite to each other at the ends of the supporting edges 8; and a protrusion 10 that engages with the hooks 11 is provided on the open end of the hidden splice 3. By providing opposite hooks 11 on the supporting edges 8 of the frame groove 7 and a protrusion 10 that engages with the hooks 11 at the open end of the hidden splice 3, the splice can be firmly snapped into the frame groove 7, achieving a stable mechanical snap-fit ​​effect. This structure can achieve self-positioning during installation, preventing the splice from sliding or falling off, enabling pre-assembly and improving on-site assembly efficiency.

[0024] A glue groove is provided on the side where the two hooks 11 contact and mate with the concealed splice 3; sealant 9 is placed in the glue groove. Adding a glue groove at the contact point between the hooks 11 and the concealed splice 3, and filling it with sealant 9, forms a continuous sealing layer after splicing, effectively preventing rainwater infiltration and air leakage. This structure significantly improves the water tightness and air tightness of door and window joints, extends service life, and improves indoor energy efficiency and comfort.

[0025] A hidden splicing strip is installed at the frame groove 7 of the profile frame 1. The splicing strip has a U-shaped structure with protrusions 10 on both sides of the U-shaped opening, which can be inserted into the frame groove 7. During installation, the U-shaped opening side is first inserted into the frame groove 7 of one side of the profile frame 1, so that it is arranged along the entire length of the frame. It is not easy to fall off during transportation and requires no additional processing. During assembly, the bottom of the U-shape is inserted into the frame groove 7 of the other side of the profile frame 1, and then the two frames are fixedly connected by the mounting nails 4.

[0026] The installation method of this concealed splicing strip is simple in structure and convenient in operation. No additional drilling or nailing is required; assembly is completed simply by snapping the splicing strip into or inserting it into the slot. Installation is quick and reliable. Two concealed splicing strips can be installed at each splice location, one on the inner and one on the outer side, for bidirectional positioning and to enhance the connection strength at the splice. Regarding the sealing performance at the splice, after installing the splicing strip on one side, sealant 9 can be applied at the right angle formed by the frame profile and the splicing strip. After the other side of the frame is spliced, the splice seam is fully filled with sealant 9, forming a continuous sealing interface to prevent rainwater and airflow from seeping in, thereby further improving the structure's sealing performance and weather resistance.

[0027] It is understood that the above specific description of this utility model is only used to illustrate this utility model and is not limited to the technical solutions described in the embodiments of this utility model. Those skilled in the art should understand that modifications or equivalent substitutions can still be made to this utility model to achieve the same technical effect; as long as the use needs are met, they are all within the protection scope of this utility model.

Claims

1. A door and window invisible mullion structure, comprising two profiled frames (1) arranged oppositely, the two profiled frames (1) are identical in structure, each comprising an outer frame (12), a broken bridge structure and an inner frame (2), characterized in that: The outer frame (12) edge and the inner frame (2) edge are both provided with a frame groove (7), and a U-shaped hidden strip (3) that cooperates with the frame groove (7) is provided in the frame groove (7); the two profile frames (1) and the hidden strip (3) are connected as one unit by mounting nails (4).

2. The concealed splicing structure for doors and windows according to claim 1, characterized in that: The frame groove (7) includes two supporting edges (8) located at the edges of the outer frame (12) and the inner frame (2); hooks (11) are provided at opposite ends of the supporting edges (8); and a protrusion (10) is provided at the opening end of the hidden strip (3) to cooperate with the hooks (11).

3. The door and window invisible fillet structure according to claim 2, characterized in that: A glue groove is provided on the side where the two hooks (11) contact and cooperate with the hidden strip (3); sealant (9) is provided in the glue groove.

4. The door and window invisible fillet structure according to claim 1, characterized in that: After the two profile frames (1) are connected, thermal insulation material (6) is provided in the cavity corresponding to the broken bridge structure.

5. The door and window invisible fillet structure according to claim 1, characterized in that: The outer frame (12) and inner frame (2) are provided with cavities (5) relative to the side groove (7). The mounting pin (4) is provided in the cavity (5) of one outer frame (12) or inner frame (2), passes through the side groove (7) and the hidden strip (3), and its end is provided in the cavity (5) of another outer frame (12) or inner frame (2).

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