A single lap joint structure of a middle gusset and a flying edge

Abstract

This utility model relates to the field of building decoration technology, specifically disclosing a single-overlap structure for a mullion, including a mullion and a frame. An overlap is provided 3.5mm away from the frame, and the overlap is connected to the frame and mullion by a 90-degree end-milling process. A profile component is provided in the middle of the frame, and one side of the profile component interlocks with the mullion. The joint between the mullion and the frame is sealed and fixed. By using a 3.5mm overlap at the joint between the mullion and the frame, and by using a 90-degree end-milling process to fit the overlap, the gap problem between the mullion and the frame can be completely solved, eliminating gaps, air leakage, water seepage in rainy weather, poor insulation and sound insulation, and improving the quality of use.

Description

Technical Field

[0001] This utility model relates to the field of building decoration technology, and in particular to a single-overlap structure for a central eave. Background Technology

[0002] The single-overlap joint process of the ferrule is a connection technology mainly used in metal curtain walls, architectural decoration or specific industrial assembly fields. Its core is to achieve structural fixation and sealing through a single overlapping surface of the component edge (ferrule), which combines connection strength and appearance flatness. Currently, existing overlapping structures on the market have been found to have problems in actual use. The connection between the mullion and the frame is a direct splicing at a 90-degree end mill, which is not easy to solve completely. This can lead to gaps, air leakage, water seepage in rainy weather, poor thermal insulation, and insufficient sound insulation.

[0003] Therefore, we propose a single-lap joint structure with a central eave. Utility Model Content

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0005] This utility model provides a single-overlap structure for the mullion's flash edge, which can solve the problem of insufficient sealing between the mullion and the frame. The specific solution is as follows: A single-overlap structure with a mid-mounted mullion and a frame includes a mid-mounted mullion and a frame. An overlap portion is provided at a distance of 3.5mm between the mid-mounted mullion and the frame. The overlap portion is connected to the frame and the mid-mounted mullion by an irregular end milling. A profile component is provided in the middle of the frame. One side of the profile component is inserted into the mid-mounted mullion. The joint between the mid-mounted mullion and the frame is sealed and fixed.

[0006] As a preferred technical solution of this utility model, the middle mullion has a plurality of glue injection holes and pin holes evenly distributed on it.

[0007] As a preferred embodiment of this utility model, the diameter of the plurality of injection holes is 6mm, and the distance between the injection holes and the end of the pusher is 11.51mm.

[0008] As a preferred embodiment of this utility model, the diameter of the plurality of pin holes is 5mm, and the distance between the pin holes and the end of the muzzle is 44.51mm.

[0009] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects: By using a 3.5mm overlap at the joint between the mullion and the frame, and then fitting the overlapping parts of the profiles together after milling at a 90-degree angle, the gap problem between the mullion and the frame can be completely solved, eliminating gaps, air leakage, water seepage in rainy weather, poor heat insulation and sound insulation, and improving the quality of use.

[0010] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained by means of the structures particularly pointed out in the written description and the accompanying drawings. Attached Figure Description

[0011] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the frame connection structure of this utility model. Figure 1 ; Figure 3 This is a schematic diagram of the frame connection structure of this utility model. Figure 2 ; Figure 4 This is a schematic diagram of the side structure of the central eaves of this utility model; The reference numerals in the attached figures are as follows: 1. Stem; 2. Frame; 3. Profile component; 4. Overlap; 5. Glue injection hole; 6. Pin hole. Detailed Implementation

[0012] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which constitute a part of the present invention and, together with the embodiments of the present invention, serve to illustrate the principles of the present invention.

[0013] See Figures 1-4This utility model provides a single-overlap structure for a mullion, including a mullion 1 and a frame 2. An overlap portion 4 is provided at a distance of 3.5mm between the mullion 1 and the frame 2. The overlap portion 4 is connected to the frame 2 and the mullion 1 by a 90-degree end milling process. A profile component 3 is provided in the middle of the frame 2. One side of the profile component 3 is inserted into the mullion 1. The joint between the mullion 1 and the frame 2 is sealed and fixed. By using the 3.5mm overlap portion at the joint between the mullion 1 and the frame 2 and the profile overlap portion 4 to fit together after 90-degree end milling, the gap problem between the mullion and the frame can be completely solved, eliminating the phenomena of gaps, air leakage, water seepage in rainy weather, poor heat insulation and sound insulation, and improving the quality of use.

[0014] The seamless fit of irregular-shaped end milling allows for zero-gap alignment between the mullion and the frame. Combined with a narrow 3.5mm overlap, it minimizes the visual impact of the joint area, avoiding problems such as "protrusions, misalignment, and excessively wide glue lines" caused by traditional wide overlaps or rough cutting. Especially in high-end doors, windows, and exposed corners of curtain walls, this process achieves a minimalist "visually integrated" effect. Irregular 90-degree end milling is a "precision forming process," which, compared to traditional "cutting + grinding," maximizes the use of raw materials and reduces waste caused by dimensional deviations.

[0015] Multiple glue injection holes 5 and pin holes 6 are evenly distributed on the mullion 1. The pin holes 6 need to be prefabricated by a special mold before the profile leaves the factory, or drilled according to precise coordinates during processing. Their positions are perfectly matched with the overlapping surfaces of the mullion 1 and the frame profile. During assembly, the pins can be directly inserted into the corresponding holes to achieve physical self-positioning of the mullion and the frame, avoiding left-right misalignment and up-down tilting during splicing. The accuracy error can be controlled within ±0.1mm, which is far superior to ordinary connections that rely on manual calibration. Even after precision milling, tiny gaps may still exist at the joint between the center mullion 1 and the frame 2. Rainwater and moisture can easily seep into the profile cavity through these gaps, causing the hardware to rust and the profile to corrode internally. After injecting sealant through the injection hole 5, the sealant will fill the entire joint gap, forming a "continuous and uninterrupted sealing layer," completely blocking the path of water and air intrusion. The waterproof performance is several times better than simply applying sealant externally.

[0016] The diameter of the multiple injection holes 5 is 6mm, and the distance between the injection holes 5 and the end of the muzzle 1 is 11.51mm.

[0017] The diameter of the multiple pin holes 6 is 5mm, and the distance between the pin holes 6 and the end of the muzzle 1 is 44.51mm; In practical applications, the irregular 90-degree end milling allows the mullion 1 and the frame to form a completely complementary "fitting structure" at their joint surfaces, rather than the line or point contact of traditional cutting. The 3.5mm overlap width provides sufficient overlapping contact area for the aluminum profile, evenly distributing external forces (such as wind pressure, self-weight, and vibration) across the entire overlap surface. This avoids deformation or breakage caused by localized stress concentration. The end milling accuracy can reach ±0.1mm, completely eliminating gaps and misalignments at the joint and preventing the problem of a seemingly close but actually unloaded joint. The 3.5mm overlap width, combined with the fitting surface, makes the mullion and frame form an "integrated load-bearing unit," improving shear and torsional resistance by more than 30% compared to ordinary wide overlaps.

[0018] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. 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.

[0019] The terms "first," "second," "third," "fourth," etc. (if present) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of the present application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0020] The devices or elements referred to in the embodiments of this application or implied herein must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the embodiments of this application. In the description of the embodiments of this application, "a plurality of" means two or more, unless otherwise precisely specified.

[0021] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A single-lap joint structure for a central eave, characterized in that: It includes a center mullion (1) and a frame (2). An overlap (4) is provided at a distance of 3.5mm between the center mullion (1) and the frame (2). The overlap (4) is connected to the frame (2) and the center mullion (1) by a 90-degree end milling connection. A profile component (3) is provided in the middle of the frame (2). One side of the profile component (3) is inserted into the center mullion (1). The joint between the center mullion (1) and the frame (2) is sealed and fixed.

2. The single-lap joint structure with a central eave as described in claim 1, characterized in that: The muzzle (1) has a plurality of glue injection holes (5) and pin holes (6) evenly distributed on it.

3. The single-lap joint structure with a central eave as described in claim 2, characterized in that: The diameter of the plurality of injection holes (5) is 6 mm, and the distance between the injection hole (5) and the end of the pusher (1) is 11.51 mm.

4. The single-lap joint structure with a central eave as described in claim 2, characterized in that: The diameter of the plurality of pin holes (6) is 5 mm, and the distance between the pin holes (6) and the end of the muzzle (1) is 44.51 mm.

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