A unit window welding-free connection system
Patent Information
- Application Number
- CN202522096277.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-29
- Publication Date
- 2026-10-27
- Estimated Expiration
- 2035-09-29
AI Technical Summary
目前常规的单元窗坐地安装方法多采用L型钢转接件与预埋件焊接固定，但该方式存在明显的问题：其进出偏差的调节依赖于在转接件水平长条孔中加焊钢垫片实现，这一过程对焊接质量要求高，若焊接不牢固，将影响结构安全，且后期修复难度大
1.本实用新型通过成对设置的角码、带齿垫片及紧固件的组合设计，借助多组齿形结构的啮合锁定和机械紧固，实现了单元窗与基层之间的可靠无焊连接，不仅彻底消除了高空焊接的安全隐患和焊渣污染，并通过齿间啮合提供了强大的抗剪切能力和连接稳定性，其机械连接方式允许进行竖向和水平方向的微量调节，有效补偿了施工基础偏差，显著降低了对前期测量精度的依赖，从而在保证结构安全的前提下提高了安装效率与适应性；
Smart Images
Figure CN224903025U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building door and window technology, and in particular to a weld-free connection system for unit windows. Background Technology
[0002] In the building door, window, and curtain wall industry, unitized windows refer to a modern installation method in which aluminum alloy components and panels are processed and assembled into complete units in the factory, and then transported to the site for direct hoisting. Compared with traditional on-site assembly of disassembled parts, unitized windows have significant advantages such as high installation efficiency, good processing precision, and short construction cycle. Therefore, they are increasingly favored by owners and designers, and have been widely used, especially in many super high-rise buildings in China.
[0003] As one of the core advantages of unit windows, efficient installation relies heavily on the rational design of their connection system. The ease of connection directly impacts overall installation efficiency. Currently, conventional ground-mounted unit window installation methods often use L-shaped steel adapters welded to embedded parts. However, this method has significant problems: adjusting for deviations relies on welding steel shims into the horizontal elongated holes of the adapters. This process demands high welding quality; weak welds will compromise structural safety and make subsequent repairs difficult. Furthermore, high-altitude welding is inherently dangerous and inconvenient, resulting in low installation efficiency. Welding slag can also contaminate or damage already installed unit windows. Additionally, the system lacks height adjustment capabilities, requiring precise elevation adjustments during installation, necessitating extremely high accuracy in initial measurement and layout. Any deviations become very difficult to correct later. Utility Model Content
[0004] The technical problem this invention aims to solve is how to avoid high-altitude welding operations during the installation of unit windows while ensuring installation accuracy.
[0005] To achieve the above objectives, according to one aspect of the utility model, a weld-free connection system for unit windows is provided, which is connected to a concrete substrate via steel brackets and plate-type embedded parts. The system includes: paired corner brackets installed on both sides of the steel brackets, each corner bracket having a first mating tooth on its outer end face; a first toothed washer disposed on the outer side of the corner bracket, the first toothed washer having a second mating tooth adapted to the first mating tooth on its end face facing the corner bracket; a first fastener that passes through both corner brackets, two first toothed washers, and the steel brackets to form a fixed connection; a load-bearing connection module with an axially extending installation space inside, the bottom of the installation space forming a third mating tooth; a second toothed washer disposed within the installation space, the lower end face of the second toothed washer having a fourth mating tooth adapted to the third mating tooth; and a second fastener that passes through the corner brackets, the load-bearing connection module, and the second toothed washer, extending into the installation space to lock the corner brackets, the load-bearing connection module, and the second toothed washer.
[0006] As a preferred embodiment of the above technical solution, the load-bearing connection module includes a base and a crossbeam, the bottom of the crossbeam has a groove structure, and the base is embedded in the groove structure; the installation space is located in the base, and the base is fixedly connected to the corner bracket by the second fastener.
[0007] As a preferred embodiment of the above technical solution, the first mating tooth, the second mating tooth, the third mating tooth, and the fourth mating tooth are all continuously serrated.
[0008] As a preferred embodiment of the above technical solution, the corner bracket has an elongated hole for vertical position adjustment through which the first fastener passes.
[0009] As a preferred embodiment of the above technical solution, at least two sets of the first fasteners fix the corner bracket, the first toothed washer, and the steel bracket, and each bolt assembly includes a bolt, a nut, and an anti-loosening washer.
[0010] As a preferred embodiment of the above technical solution, the installation space is a cavity structure that extends through the axial direction of the base. The top and bottom of the installation space are respectively provided with an insertion hole and a mating hole. The insertion hole is for inserting the second toothed washer, and the mating hole is for the second fastener to pass through and lock the relative positions of the corner bracket, the load-bearing connection module, and the second toothed washer.
[0011] As a preferred embodiment of the above technical solution, the first mating teeth fully cover the mating end face of the first toothed washer, and the outer contour dimension of the first toothed washer is smaller than the area covered by the second mating teeth on the corner bracket; the fourth mating teeth fully cover the mating end face of the second toothed washer, and the outer contour dimension of the second toothed washer is smaller than the area covered by the third mating teeth on the load-bearing connecting module (500).
[0012] As a preferred embodiment of the above technical solution, an adhesive strip is provided between the inner wall of the groove structure and the outer walls on both sides of the base.
[0013] As a preferred embodiment of the above technical solution, the base is provided with snap-fit parts on both sides, one side of the adhesive strip is provided with a mating flange that matches the snap-fit parts, and the other side of the adhesive strip abuts against the inner wall of the groove structure.
[0014] As a preferred embodiment of the above technical solution, the corner bracket, the base, the crossbeam, and the toothed gasket are connecting parts made of aluminum alloy.
[0015] In summary, this utility model has the following advantages: 1. This utility model, through the combined design of paired corner brackets, toothed gaskets, and fasteners, and with the help of the meshing and locking of multiple sets of toothed structures and mechanical fastening, achieves a reliable weld-free connection between the unit window and the base layer. This not only completely eliminates the safety hazards and welding slag pollution of high-altitude welding, but also provides strong shear resistance and connection stability through inter-tooth meshing. Its mechanical connection method allows for micro-adjustments in the vertical and horizontal directions, effectively compensating for construction foundation deviations and significantly reducing the dependence on the accuracy of previous measurements. Thus, it improves installation efficiency and adaptability while ensuring structural safety. 2. The modular design and weld-free nature of this invention allow most components to be precisely prefabricated and pre-assembled in the factory. On-site installation requires only mechanical fastening, significantly simplifying the process, reducing reliance on specialized welding trades and equipment, and enabling ordinary workers to operate the system after training. This shortens the construction cycle and improves installation efficiency. 3. The connection system of this utility model incorporates an adhesive strip between the base of the load-bearing connection module and the groove of the crossbeam. This adhesive strip achieves reliable fixation and sealing through a snap-fit mechanism and a mating flange. This design effectively prevents rainwater and air penetration, improving the water tightness and air tightness of the entire window unit, thereby contributing to improved building energy efficiency and indoor comfort.
[0016] Further or other beneficial effects will be discussed in the embodiments. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the connection system structure of this utility model; Figure 2 This is a schematic diagram of the structure of this utility model from another perspective; Figure 3 for Figure 1 Enlarged view of area A; Figure 4 This is a schematic diagram of the base structure of this utility model; Figure 5 This is a schematic diagram of the corner code structure of this utility model; Among them, 100-corner bracket, 110-first mating tooth, 120-elongated hole, 200-first toothed gasket, 210-second mating tooth, 300-first fastener, 500-load-bearing connection module, 510-base, 511-snap-fitting part, 520-crossbeam, 521-groove structure, 501-installation space, 502-insertion hole, 503-mating hole, 530-third mating tooth, 540-rubber strip, 541-mating flange, 600-second toothed gasket, 610-fourth mating tooth, 700-second fastener, 800-steel bracket, and 900-plate embedded part. Detailed Implementation
[0018] The directional terms such as up, down, left, right, front, back, front, back, top, and bottom mentioned or possibly used in this specification are defined relative to the construction shown in the accompanying drawings. The terms "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively. These are relative concepts and may therefore vary depending on their location and usage. Therefore, these or other directional terms should not be interpreted as restrictive.
[0019] The present invention will be further explained below with reference to the embodiments: Example
[0020] A solderless connection system for unit windows, as described above. Figure 1 , Figure 2 and Figure 3 The initial fixing to the concrete substrate is achieved through steel brackets 800 and plate-type embedded parts 900. The system includes a first toothed washer 200, a first fastener 300, a load-bearing connection module 500, a second toothed washer 600, a second fastener 700, and paired corner brackets 100; the paired corner brackets 100 (see...) Figure 5The brackets 100 are installed on both sides of the steel bracket 800. Each bracket 100 has a first mating tooth 110 machined on its outer end face. A first toothed washer 200 is provided on the outer side of the bracket 100, and its end face facing the bracket 100 has a second mating tooth 210 that matches the first mating tooth 110. In this embodiment, the first fastener 300 is preferably a high-strength bolt assembly. The first fastener 300 passes through both brackets 100, both first toothed washers 200, and the steel bracket 800, and is secured by tightening the nuts. The meshing of the toothed structures effectively prevents relative slippage or loosening at the connection point under stress, ensuring the stability of the connection.
[0021] The load-bearing connection module 500, as a key load-bearing and transfer component of the system, has an axially extending installation space 501 inside (see...). Figure 4 The bottom of the mounting space 501 protrudes upward to form a third mating tooth 530. A second toothed washer 600 is disposed within this mounting space 501, and the lower end face of the second toothed washer 600 has a fourth mating tooth 610 that matches the third mating tooth 530. A second fastener 700 passes through the corner bracket 100, the load-bearing connecting module 500, and the second toothed washer 600, and extends into the mounting space 501. By tightening, the corner bracket 100, the load-bearing connecting module 500, and the second toothed washer 600 are locked together. Similarly, the toothed engagement at this location also ensures the stability of the connection between the load-bearing connecting module 500 and the corner bracket 100.
[0022] The unitized window weld-free connection system of this embodiment aims to provide a unitized door and window frame installation solution that eliminates the need for on-site welding, offers convenient installation, reliable connections, and easy adjustment. Through an innovative toothed meshing structure and modular design, this system effectively solves the problems of complex procedures, low efficiency, easy deformation, and weld oxidation inherent in traditional welding methods. Its core lies in the high-precision, high-strength, and high-reliability mechanical connection achieved through the coordinated operation of steel brackets 800, corner brackets 100, toothed gaskets, and load-bearing connection modules 500.
[0023] In this embodiment, the load-bearing connection module 500 preferably adopts a split design, including a base 510 and a crossbeam 520. A groove structure 521 is formed at the bottom of the crossbeam 520, and the base 510 is embedded within this groove structure 521. The aforementioned installation space 501 is located within the base 510. The base 510 is fixedly connected to the corner bracket 100 by a second fastener 700. This split design facilitates manufacturing and assembly, and allows the crossbeam 520 to adopt different cross-sectional forms to adapt to different architectural design requirements.
[0024] To improve sealing performance and prevent rainwater and air penetration, a rubber strip 540 is provided between the inner wall of the groove structure 521 and the outer walls on both sides of the base 510. Furthermore, the base 510 may have snap-fit portions 511 on both sides, and one side of the rubber strip 540 has a mating flange 541 adapted to the snap-fit portion 511, specifically a snap tongue that can extend into the snap-fit portion 511. The other side of the rubber strip 540 tightly abuts against the inner wall of the groove structure 521 of the crossbeam 520. This snap-fit sealing design ensures reliable fixation and long-term effectiveness of the sealing material. Specifically, the rubber strip 540 is made of EPDM rubber.
[0025] To facilitate fine-tuning of the vertical position during installation and compensate for errors in civil construction, an elongated hole 120 is provided on the corner bracket 100 for the first fastener 300 to pass through. This design allows the corner bracket 100 to be adjusted vertically within a certain range relative to the steel bracket 800 before fixing, greatly improving the flexibility and fault tolerance of on-site installation.
[0026] Both the first fastener 300 and the second fastener 700 incorporate anti-loosening requirements in their design. For example, the first fastener 300 may include at least two sets of bolt assemblies, each set containing a bolt, a nut, and an anti-loosening washer. These measures effectively resist the potential impact of vibration and load fluctuations on the connection joint, ensuring its long-term safety.
[0027] The mounting space 501 is typically a cavity structure extending axially through the aluminum alloy base 510. The top and bottom of the mounting space 501 are respectively provided with an insertion hole 502 and a mating hole 503. The insertion hole 502 facilitates the insertion of the second toothed washer 600 into the mounting space 501 and its alignment with the third mating tooth 530. The mating hole 503 allows the second fastener 700 to pass through to lock the entire connection node.
[0028] The main metal connecting components in the system, such as corner bracket 100, base 510, crossbeam 520, and toothed gaskets, can all be made of aluminum alloy. Aluminum alloy has the advantages of being lightweight, corrosion-resistant, high-strength, and easy to process and form, making it very suitable for weld-free connection systems.
[0029] The tooth design is crucial for ensuring reliable connection. The first mating tooth 110, second mating tooth 210, third mating tooth 530, and fourth mating tooth 610 are preferably continuous serrations. This tooth shape provides the maximum meshing contact area and optimal shear resistance. The first mating tooth 110 should fully cover the mating end face of the first toothed washer 200, and the outer contour dimension of the first toothed washer 200 is slightly smaller than the area covered by the second mating tooth 210 on the bracket 100 to ensure uniform pressure distribution and avoid interference. Similarly, the fourth mating tooth 610 fully covers the mating end face of the second toothed washer 600, and the outer contour dimension of the second toothed washer 600 is smaller than the area covered by the third mating tooth 530 on the load-bearing connection module 500.
[0030] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.
[0031] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.
Claims
1. A weld-free connection system for unit windows, wherein the window is connected to a concrete substrate (900) via steel brackets (800) and plate-type embedded parts, characterized in that, include: The corner brackets (100) are arranged in pairs and installed on both sides of the steel bracket (800). Each corner bracket (100) has a first mating tooth (110) on its outer end face. A first toothed washer (200) is disposed on the outside of the corner bracket (100), and the end face of the first toothed washer (200) facing the corner bracket (100) is provided with a second mating tooth (210) that is adapted to the first mating tooth (110). The first fastener (300) passes through both corner brackets (100), the two first toothed washers (200), and the steel bracket (800) to form a fixed structure; The load-bearing connection module (500) has an axially extending installation space (501) inside, and the bottom of the installation space (501) forms a third mating tooth (530) upward. The second toothed gasket (600) is disposed in the installation space (501), and the lower end face of the second toothed gasket (600) is provided with a fourth mating tooth (610) that is adapted to the third mating tooth (530). The second fastener (700) passes through the corner bracket (100), the load-bearing connection module (500) and the second toothed washer (600), and extends into the installation space (501) to lock the corner bracket (100), the load-bearing connection module (500) and the second toothed washer (600).
2. The unit window solderless connection system according to claim 1, characterized in that: The load-bearing connection module (500) includes a base (510) and a crossbeam (520). The bottom of the crossbeam (520) is provided with a groove structure (521), and the base (510) is embedded in the groove structure (521). The installation space (501) is located in the base (510), and the base (510) is fixedly connected to the corner bracket (100) by the second fastener (700).
3. The unit window solderless connection system according to claim 1, characterized in that: The first mating tooth (110), the second mating tooth (210), the third mating tooth (530), and the fourth mating tooth (610) are all continuously serrated.
4. The unit window solderless connection system according to claim 1, characterized in that: The corner bracket (100) has an elongated hole (120) for vertical position adjustment through which the first fastener (300) passes.
5. The unit window solderless connection system according to claim 1, characterized in that: At least two sets of the first fasteners (300) secure the corner bracket (100), the first toothed washer (200) and the steel bracket (800), each bolt assembly comprising a bolt, a nut and a lock washer.
6. The unit window solderless connection system according to claim 2, characterized in that: The installation space (501) is a cavity structure that runs through the axial direction of the base (510). The top and bottom of the installation space (501) are respectively provided with an insertion hole (502) and a mating hole (503). The insertion hole (502) is for the second toothed washer (600) to be inserted, and the mating hole (503) is for the second fastener (700) to pass through and lock the relative positions of the corner bracket (100), the load-bearing connection module (500) and the second toothed washer (600).
7. The unit window solderless connection system according to claim 1, characterized in that: The first mating tooth (110) is fully covered on the mating end face of the first toothed washer (200), and the outer contour dimension of the first toothed washer (200) is smaller than the area covered by the second mating tooth (210) on the corner bracket (100); the fourth mating tooth (610) is fully covered on the mating end face of the second toothed washer (600), and the outer contour dimension of the second toothed washer (600) is smaller than the area covered by the third mating tooth (530) on the load-bearing connecting module (500).
8. The unit window solderless connection system according to claim 2, characterized in that: A rubber strip (540) is provided between the inner wall of the groove structure (521) and the outer walls on both sides of the base (510).
9. A solderless connection system for unit windows according to claim 8, characterized in that: The base (510) has snap-fit parts (511) on both sides, and the adhesive strip (540) has a mating flange (541) on one side that is adapted to the snap-fit part (511), and the other side of the adhesive strip (540) abuts against the inner wall of the groove structure (521).
10. A solderless connection system for unit windows according to claim 2, characterized in that: The corner bracket (100), the base (510), the crossbeam (520), and the toothed gasket are connectors made of aluminum alloy.