A connector for aluminum alloy doors and windows

By designing a quick-connect structure for limiting ball bearings and elastic components in the main connector and frame components, combined with an adjustable slider assembly, the problems of cumbersome installation and poor versatility of aluminum alloy door and window connectors are solved, achieving rapid installation and diverse adaptability.

CN224282408UActive Publication Date: 2026-05-26HEFEI KAIQI DOORS & WINDOW TECHNOLOGY CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
HEFEI KAIQI DOORS & WINDOW TECHNOLOGY CO LTD
Filing Date
2025-06-06
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

Existing aluminum alloy door and window connectors are cumbersome to install, require various tools, have poor versatility, and are difficult to adapt to aluminum alloy door and window profiles of different specifications and shapes.

Method used

Design a connection mechanism including a main connector and a frame component. Employ a quick-connect structure using limit balls and elastic elements, combined with an adjustable slider assembly, to achieve quick installation and position adjustment via buttons and knobs.

Benefits of technology

It simplifies the installation process, reduces labor costs, improves installation efficiency and the versatility of connectors, and adapts to diverse market demands.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224282408U_ABST
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Abstract

This application relates to the field of door and window manufacturing technology and discloses a connector for aluminum alloy doors and windows, including a main connector and two side frame pieces. The two side frame pieces are connected by the main connector. The main connector has an "L" shaped structure. A connecting mechanism is installed on the outer wall of the main connector that contacts the two side frame pieces. In this utility model, by using the connecting mechanism, pressing a button will cause the limiting ball to retract, realizing the quick insertion of the plug and the fixing sleeve. After releasing the button, the limiting ball will automatically lock. There is no need to use screwdrivers, wrenches and other tools for complicated tightening operations. Compared with the cumbersome installation process of traditional connectors, it greatly simplifies the installation steps, shortens the installation time, and significantly improves the installation efficiency. At the same time, the simplified installation process reduces the dependence on professional installers, reduces labor costs, and effectively solves the problems of cumbersome and costly installation of existing connectors.
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Description

Technical Field

[0001] This application relates to the field of door and window manufacturing technology, and in particular to a connector for aluminum alloy doors and windows. Background Technology

[0002] During the installation of aluminum alloy doors and windows, connectors play a crucial role, and their performance directly affects the overall stability, sealing performance, and service life of the aluminum alloy doors and windows.

[0003] Existing aluminum alloy door and window connectors have some problems in practical use. For example, the installation process of some connectors is cumbersome, requiring the use of multiple tools for complex operations, which not only increases installation time and labor costs but also reduces installation efficiency. Furthermore, existing connectors have limitations in adapting to aluminum alloy door and window profiles of different specifications and shapes, have poor versatility, and are difficult to meet diverse market demands. Therefore, a new type of aluminum alloy door and window connector is proposed to solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to provide a connector for aluminum alloy doors and windows to solve the problems mentioned in the background art.

[0005] The technical solution for an aluminum alloy door and window connector provided in this application is as follows:

[0006] A connector for aluminum alloy doors and windows includes a main connector and two side frame pieces. The two side frame pieces are connected by the main connector. The main connector has an "L" shaped structure. A connecting mechanism is installed on the outer wall of the main connector that contacts the two side frame pieces.

[0007] The connecting mechanism includes a slide cylinder and a fixed sleeve. A plug is fixedly connected to the outer wall of the slide cylinder and communicates with it. The plug is inserted into the fixed sleeve. Multiple limiting balls are movably connected to the outer circumference of the plug. A tapered surface is provided on the inner wall of the fixed sleeve. The tapered surface abuts against the outer wall of the multiple limiting balls located outside the plug. A slide rod is slidably connected to the inner wall of the plug. The end of the slide rod extends into the interior of the slide cylinder and is fixedly connected to a button. A pressing surface is provided on the outer wall of the slide rod located inside the plug. The pressing surface abuts against the outer wall of the multiple limiting balls located inside the plug.

[0008] Preferably, the inner wall of the slide cylinder is also equipped with an elastic element, which is sleeved on the outer wall of the slide rod. One end of the elastic element is fixedly connected to the bottom inner wall of the slide cylinder, and the other end is fixedly connected to the outer wall of the button.

[0009] Preferably, the outer wall of the main connector has two adjusting grooves, the inner walls of the two adjusting grooves are slidably connected to adjusting sliders, the outer wall of the adjusting sliders has two first fixing holes, and the slide cylinder is welded to the inner wall of the first fixing holes.

[0010] Preferably, the outer wall of the frame member that fits into the main body connector has a plurality of second fixing holes, the second fixing holes corresponding to the first fixing holes, and the fixing sleeve is welded to the inner wall of the second fixing holes.

[0011] Preferably, a nut ring is embedded in the inner wall of the middle section of the adjusting slider, and a lead screw is rotatably connected to the inner wall of the middle section of the adjusting groove. The lead screw is threaded to the inner wall of the nut ring, and one end of the lead screw passes through the main connecting piece and is fixedly connected to an adjusting knob.

[0012] Preferably, the inner walls of the two perpendicular sides of the main connector are fixedly connected with multiple reinforcing ribs.

[0013] In summary, this application includes the following beneficial technical effects:

[0014] 1. Through the set connection mechanism, pressing the button will retract the limit ball, realizing the quick insertion of the plug and the fixing sleeve. After releasing the button, the limit ball will automatically lock. There is no need to use screwdrivers, wrenches and other tools for complicated tightening operations. Compared with the cumbersome installation process of traditional connectors, it greatly simplifies the installation steps, shortens the installation time, and significantly improves the installation efficiency. At the same time, the simplified installation process reduces the reliance on professional installers, reduces labor costs, and effectively solves the problems of cumbersome and costly installation of existing connectors.

[0015] 2. The connector is equipped with an adjustable slider assembly. By rotating the adjustment knob, the position of the slider can be flexibly adjusted through the threaded transmission of the screw and nut ring, thereby changing the relative position of the plug and the fixing sleeve. This allows for precise adjustment of the connection angle and distance of the door and window frame. This design can adapt to aluminum alloy door and window profiles of different specifications and shapes, effectively overcoming the shortcomings of poor universality of existing connectors, meeting diverse market demands, expanding the application range of connectors, and improving the flexibility and adaptability of aluminum alloy door and window installation. Attached Figure Description

[0016] Figure 1 This is an overall schematic diagram of an embodiment of the application;

[0017] Figure 2 This is an exploded view of an embodiment of the application;

[0018] Figure 3 This is a partially exploded cross-sectional view of the structure of the embodiment of the application;

[0019] Figure 4 for Figure 3 Enlarged schematic diagram of the structure at point A in the middle.

[0020] Explanation of reference numerals in the attached drawings: 1. Main connecting part; 2. Frame part; 3. Adjusting slide; 4. Adjusting slider; 5. Nut ring; 6. Lead screw; 7. Adjusting knob; 8. Slide cylinder; 9. Fixing sleeve; 10. Conical surface; 11. Slide rod; 12. Extrusion surface; 13. Limiting ball; 14. Elastic element; 15. Button; 16. Plug; 17. First fixing hole; 18. Second fixing hole; 19. Reinforcing rib. Detailed Implementation

[0021] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0022] This application discloses a connector for aluminum alloy doors and windows, referring to... Figure 1-4 A connector for aluminum alloy doors and windows includes a main connector 1 and two frame pieces 2. The main connector 1 is made of high-strength aluminum alloy in one piece and is designed as an "L" shape. Its two vertical surfaces are used to connect the frame pieces 2 in different directions. The sliding cylinder 8 and the fixing sleeve 9 of the connecting mechanism are the core connecting components. The sliding cylinder 8 is machined by a CNC lathe, and a plug 16 that communicates with the inside is vertically welded to its outer wall. The outer diameter of the plug 16 is slightly smaller than the inner diameter of the fixing sleeve 9 so as to realize the plug-in fit.

[0023] Reference Figure 3 and Figure 4 Hemispherical grooves are evenly formed on the outer circumference of the plug 16. Each groove is embedded with a limiting ball 13. The limiting ball 13 is restricted in the groove by an annular limiting ring, so that it can only roll freely in the groove. The inner wall of the fixing sleeve 9 is precision ground to form a conical surface 10. The angle of the conical surface 10 is optimized by mechanical calculation to ensure that when the plug 16 is inserted, the limiting ball 13 can generate radial expansion force under the action of the conical surface 10 to achieve a tight connection.

[0024] Reference Figure 3 and Figure 4 The inner wall of the plug 16 has a straight groove, through which the slide rod 11 is slidably connected to the plug 16. One end of the slide rod 11 extends through the slide cylinder 8 to the outside and is fixedly installed with the button 15 for easy pressing by the operator. The outer wall of the slide rod 11 inside the plug 16 is milled to form a pressing surface 12. The inclination angle of the pressing surface 12 matches the movement trajectory of the limiting ball 13. When the button 15 is pressed, the slide rod 11 slides inward, and the pressing surface 12 moves down and no longer contacts the limiting ball 13, so it no longer abuts against the limiting ball 13. The limiting ball 13 retracts towards the center of the plug 16, causing the plug 16 to separate from the fixing sleeve 9.

[0025] Reference Figure 3 and Figure 4One end of the elastic element 14 is fixedly installed on the bottom of the inner wall of the slide cylinder 8 by countersunk screws. The elastic element 14 is made of high elastic stainless steel and its specifications are customized according to the reset force required by the connecting mechanism. The other end of the elastic element 14 is welded and fixed to the outer wall of the button 15 to ensure that the elastic element 14 can provide a stable reset force after the slide rod 11 is pressed, so that the slide rod 11 returns to its initial position and the connecting mechanism can be reused.

[0026] Reference Figure 1 and Figure 2 Two adjusting grooves 3 are machined on the outer wall of the main connecting part 1 by a milling machine. The adjusting grooves 3 are T-shaped grooves that match the T-shaped protrusions of the adjusting slider 4 to achieve a stable sliding connection. The adjusting slider 4 is formed by die casting and has two first fixing holes 17 on its outer wall. The inner diameter of the first fixing holes 17 is adapted to the outer diameter of the slide cylinder 8. The slide cylinder 8 is welded to the inner wall of the first fixing holes 17 by argon arc welding to ensure the connection strength.

[0027] Reference Figure 1 and Figure 2 The outer wall of the frame piece 2, which is attached to the main body connector 1, is drilled with multiple second fixing holes 18. The position and size of the second fixing holes 18 correspond one-to-one with the first fixing holes 17. The fixing sleeve 9 is also made of aluminum alloy and is fixed to the inner wall of the second fixing holes 18 by welding. Before welding, the surface of the fixing sleeve 9 and the second fixing holes 18 is cleaned and pretreated to ensure the welding quality.

[0028] Reference Figure 3 and Figure 4 The inner wall of the middle section of the adjusting slider 4 is inlaid with a nut ring 5. The nut ring 5 is made of copper alloy, which has good wear resistance and friction reduction. The inner wall of the middle section of the adjusting groove 3 is equipped with a lead screw 6 through a bearing seat. The lead screw 6 cooperates with the deep groove ball bearing in the bearing seat to achieve flexible rotation. The lead screw 6 and the nut ring 5 are connected by a high-precision thread. After one end of the lead screw 6 passes through the main body connecting piece 1, it is connected and fixed to the adjusting knob 7 by a key. When the operator rotates the adjusting knob 7, the lead screw 6 rotates and drives the nut ring 5 and the adjusting slider 4 to move in the adjusting groove 3.

[0029] Reference Figure 3 and Figure 4 Multiple reinforcing ribs 19 are fixed to the inner walls of the two perpendicular sides of the main connector 1 by welding. The reinforcing ribs 19 are triangular in structure, and their thickness and height are designed according to the stress conditions of the main connector 1. The welding of the reinforcing ribs 19 adopts a full welding process to ensure a firm connection with the main connector 1, effectively enhancing the structural strength and rigidity of the main connector 1.

[0030] The implementation principle of the connector for aluminum alloy doors and windows in this application embodiment is as follows: When assembling aluminum alloy doors and windows, firstly, press button 15 by hand. Button 15 drives slide rod 11 to slide inward in the linear groove on the inner wall of plug 16. At this time, the pressing surface 12 on slide rod 11 moves synchronously and no longer abuts against the limiting ball 13. The multiple limiting balls 13, which have lost their pressing constraint, retract towards the center of plug 16 under their own structural characteristics and slight external force. The outer wall of the limiting ball 13 fits against the pressing surface 12, so that the limiting ball 13 does not obstruct the movement of plug 16. Then, align plug 16 with fixing sleeve 9 and insert it. Since the limiting ball 13 is in a retracted state, the plug 16 can smoothly enter the fixed sleeve 9. When the plug 16 is inserted into place, the button 15 is released, and the elastic element 14 fixed at the bottom of the inner wall of the slide cylinder 8 plays its role. One end of the elastic element 14 is fixed to the bottom inner wall of the slide cylinder 8 by a countersunk screw, and the other end is welded to the outer wall of the button 15. When the button 15 is pressed, it is in a compressed state. After being released, the elastic element 14 releases its elastic potential energy and pushes the button 15 and the slide rod 11 to reset. During the reset process of the slide rod 11, the pressing surface 12 moves accordingly and abuts against the limiting ball 13, pushing the limiting ball 13 out of the plug 16.At this time, the outer wall of the limiting ball 13 abuts against the conical surface 10 of the inner wall of the fixing sleeve 9. Under the action of the conical surface 10, the limiting ball 13 generates radial expansion force, tightly clamping the inner wall of the fixing sleeve 9, thereby firmly locking the plug 16 inside the fixing sleeve 9, realizing a stable connection between the main body connector 1 and the frame piece 2. When it is necessary to adjust the relative position of the aluminum alloy door and window frame piece 2 and the main body connector 1, the operator rotates the adjustment knob 7. The adjustment knob 7 drives the lead screw 6 to rotate synchronously through the key connection. The lead screw 6 and the deep groove in the bearing seat The ball bearing assembly allows for flexible rotation. Because the lead screw 6 and the nut ring 5 embedded in the inner wall of the middle section of the adjusting slider 4 use a high-precision threaded connection, the rotation of the lead screw 6 is converted into linear movement of the nut ring 5 and the adjusting slider 4 along the adjusting groove 3. The adjusting groove 3 has a T-shaped groove structure that matches the T-shaped protrusion of the adjusting slider 4, ensuring that the adjusting slider 4 will not deviate or disengage during movement, thus ensuring stability. When the adjusting slider 4 moves, it drives the slide cylinder 8 and plug 16, which are welded to the inner wall of its first fixing hole 17, to move synchronously. This allows for changes in the relative positions of the plug 16 and multiple different fixing sleeves 9 to meet the installation requirements of aluminum alloy doors and windows of different specifications, improving the versatility and adaptability of the connectors. When the aluminum alloy doors and windows require repair, component replacement, or reassembly, pressing the button 15 again causes the slide rod 11 to slide inward within the linear groove on the inner wall of the plug 16. The pressing surface 12 moves accordingly and no longer abuts against the limiting ball 13. After losing the pushing effect of the pressing surface 12, the limiting ball 13 exerts its force on the inner wall of the fixing sleeve 9 and its own structural characteristics... The plug 16 retracts towards the center, releasing the contact between the limiting ball 13 and the conical surface 10 of the inner wall of the fixing sleeve 9, thus releasing the lock between the plug 16 and the fixing sleeve 9. At this time, the plug 16 can be easily pulled out of the fixing sleeve 9, realizing the separation of the main connecting part 1 and the frame part 2. After releasing the button 15, the elastic part 14 pushes the slide bar 11 and the button 15 back to the initial position, and the pressing surface 12 re-abuts against the limiting ball 13, so that the connecting mechanism returns to a state where it can be reconnected, preparing for the subsequent door and window assembly work.

[0031] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A connector for aluminum alloy doors and windows, comprising a main connector (1) and two frame members (2), characterized in that: The two frame pieces (2) are connected by a main body connector (1), which has an "L" shaped structure. A connecting mechanism is installed on the outer wall of the main body connector (1) that contacts the two frame pieces (2). The connecting mechanism includes a slide cylinder (8) and a fixed sleeve (9). The outer wall of the slide cylinder (8) is fixedly connected to a plug (16) that communicates with it. The plug (16) is inserted into the fixed sleeve (9). The outer circumferential wall of the plug (16) is movably connected to a plurality of limiting balls (13). The inner wall of the fixed sleeve (9) is provided with a conical surface (10). The conical surface (10) abuts against the outer wall of the plurality of limiting balls (13) located outside the plug (16). The inner wall of the plug (16) is slidably connected to a slide rod (11). The end of the slide rod (11) extends into the interior of the slide cylinder (8) and is fixedly connected to a button (15). The outer wall of the slide rod (11) located inside the plug (16) is provided with a pressing surface (12). The pressing surface (12) abuts against the outer wall of the plurality of limiting balls (13) located inside the plug (16).

2. The connector for aluminum alloy doors and windows according to claim 1, characterized in that: The inner wall of the slide cylinder (8) is also equipped with an elastic element (14), which is sleeved on the outer wall of the slide rod (11). One end of the elastic element (14) is fixedly connected to the bottom inner wall of the slide cylinder (8), and the other end is fixedly connected to the outer wall of the button (15).

3. The connector for aluminum alloy doors and windows according to claim 1, characterized in that: The outer wall of the main connector (1) has two adjusting grooves (3), and the inner walls of the two adjusting grooves (3) are slidably connected to adjusting sliders (4). The outer wall of the adjusting sliders (4) has two first fixing holes (17), and the slide cylinder (8) is welded to the inner wall of the first fixing holes (17).

4. A connector for aluminum alloy doors and windows according to claim 1, characterized in that: The outer wall of the frame piece (2) that fits against the main body connector (1) has a plurality of second fixing holes (18), the second fixing holes (18) correspond to the first fixing holes (17), and the fixing sleeve (9) is welded to the inner wall of the second fixing holes (18).

5. A connector for aluminum alloy doors and windows according to claim 3, characterized in that: The adjusting slider (4) has a nut ring (5) embedded in the inner wall of the middle section. The adjusting groove (3) has a lead screw (6) rotatably connected to the inner wall of the middle section. The lead screw (6) is threaded to the inner wall of the nut ring (5), and one end of it passes through the main body connector (1) and is fixedly connected to the adjusting knob (7).

6. A connector for aluminum alloy doors and windows according to claim 1, characterized in that: The main connector (1) has multiple reinforcing ribs (19) fixedly connected to the inner walls of its two perpendicular sides.