Split type straight-through connector capable of being quickly installed
The modular, quick-installation straight-through structure utilizes countersunk screws and slots to achieve rapid connection of square tubes, solving the problems of inflexible installation and screw hole wear in existing technologies. This enables rapid installation and disassembly of square tubes, improving installation accuracy and efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGDONG YIZHONG CLEAN TECH CO LTD
- Filing Date
- 2025-07-02
- Publication Date
- 2026-07-21
AI Technical Summary
In existing technologies, the connection of square tubes requires precise design and pre-drilling, which leads to inflexible installation and wear of screw holes, affecting installation accuracy and progress.
It adopts a split, quick-installation straight-through structure, which uses countersunk screws and a slot structure to achieve quick connection and positioning of square tubes, eliminating the need for pre-installation of corner brackets.
It enables rapid installation and disassembly of square tubes, avoids wear on screw holes, improves installation accuracy and efficiency, and has a sturdy and aesthetically pleasing structure.
Smart Images

Figure CN224533189U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of connector technology, specifically a split-type quick-installation straight connector. Background Technology
[0002] Square tubes are hollow, lightweight, thin-walled steel pipes with a square cross-section. They are made from hot-rolled or cold-rolled strip steel or coils, cold-bent, and then high-frequency welded to form a square cross-section. Including decorative square tubes, these types of square tubes are typically assembled by splicing to combine multiple straight square tubes into different shapes.
[0003] In existing technologies, the 90-degree connection between square tubes used to build the frame of sunrooms and awnings is achieved by installing “7” or “U” shaped aluminum angle brackets onto the surface of the square tubes using stainless steel self-tapping screws. Then, the square tubes to be connected are inserted into the angle brackets, and screws are tightened through the surface of the square tubes to be connected to the angle brackets.
[0004] However, this approach requires precise design, which is then transferred to the production workshop. The production workshop needs to perform precise drilling operations according to the drawings, pre-install the corner brackets, and pre-drill holes in the square tubes that need to be connected. This process is complex and highly dependent on workshop workers. Furthermore, since the corner brackets are nailed to the surface of the square tubes, if the installation is not appropriate, the screws must be unscrewed from the corner brackets and square tubes, and the angle between the square tubes and corner brackets must be readjusted or the square tubes must be re-drilled. This not only has the disadvantage of inflexible self-adjustment during on-site installation, but also causes wear on the screw holes on the square tubes due to repeated unscrewing, resulting in enlarged screw holes that cannot be matched with the screws for tightening, thus affecting the installation accuracy and progress. Utility Model Content
[0005] The purpose of this invention is to provide a split-type quick-installation straight-through device to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution:
[0007] A split-type quick-installation straight-through connector includes:
[0008] Branch straight-through A, wherein the bottom of branch straight-through A has a bottom connecting part;
[0009] The straight section B includes a vertical section and a horizontal section installed on one side of the vertical section;
[0010] The straight-through section A is used to fit and connect to a square tube;
[0011] The bottom connecting part has a slot for fitting the horizontal part end into the slot. After the horizontal part is inserted into the slot, the vertical part comes into contact with the side of the straight passage A.
[0012] The horizontal section is used to connect to another square tube;
[0013] The bottom connecting part of the straight passage A and the vertical part of the straight passage B have a connection structure distributed along the radial direction.
[0014] Preferably, the connection structure includes a countersunk screw, a channel, and a hole. The channel is opened along the radial direction of the bottom connection portion, and the hole is opened along the radial direction of the vertical portion and is on the same straight line (or coaxially arranged) with the central axis of the channel. The countersunk screw passes through the channel and the hole and is screwed into the nut in the vertical portion.
[0015] Preferably, the connection structure further includes a placement groove, which is opened along the axial direction of the vertical portion for placing a nut, and the placement groove communicates with the hole.
[0016] Preferably, the horizontal portion has a through hole along the axial direction for inserting a Ram screw.
[0017] Preferably, the bottom connecting portion has a receiving groove for accommodating the horizontal portion, and the receiving groove has a slot formed by protrusions.
[0018] Preferably, the vertical portion has chamfers or rounded corners on both sides that are adapted to the bottom connecting portion.
[0019] Preferably, the channels and holes have a suitable spacing with respect to the through holes.
[0020] Preferably, the straight-through section A has a cavity portion.
[0021] Preferably, the bottom of the straight section B has a reverse edge for positioning.
[0022] Compared with the prior art, the beneficial effects of this utility model are:
[0023] In this invention, the bottom connecting part of the straight tube A and the vertical part of the straight tube B have a connecting structure distributed along the radial direction. Utilizing this connecting structure, a countersunk screw passes through the channel of the straight tube A and the hole of the straight tube B, and then screws into the nut in the placement groove of the straight tube B8, thereby achieving quick installation and fixation of the straight tubes A and B. Furthermore, the slot allows for quick positioning of the straight tubes A and B. The bottom of the straight tube B has a reverse edge, which serves a positioning function when fixing the square tube.
[0024] Therefore, this utility model's split-type quick-installation straight connector can be assembled and spliced using general square tubes, making installation simple and convenient, with a robust structure that allows for rapid installation and disassembly. Furthermore, it eliminates the need for pre-installed corner brackets, and during disassembly, it avoids directly removing the self-tapping screws on the square tube. This prevents wear on the screw holes on the square tube, which could lead to enlarged screw holes that cannot be properly tightened, thus affecting installation accuracy and progress. Attached Figure Description
[0025] Figure 1 This is the overall assembly drawing of the present utility model.
[0026] Figure 2 This utility model Figure 1 A schematic diagram of the decomposition process;
[0027] Figure 3 This utility model Figure 2 A three-dimensional schematic diagram;
[0028] Figure 4 This is a bottom-view diagram of the straight-through section A of this utility model;
[0029] Figure 5 This is a top-view schematic diagram of the straight-through section B of this utility model;
[0030] Figure 6 This is a schematic diagram of the straight-through installation square tube of this utility model;
[0031] Figure 7 This utility model Figure 6 Schematic diagram of cross-section at GG in the middle;
[0032] Figure 8 This utility model Figure 7 A magnified view of the structure in the middle section.
[0033] In the diagram: 1. Straight-through section A; 2. Bottom connecting part; 3. Channel; 4. Receiving groove; 5. Protrusion; 6. Slot; 7. Countersunk screw; 8. Straight-through section B; 9. Horizontal part; 10. Vertical part; 11. Through hole; 12. Hole; 13. Placement groove; 14. Nut; 15. Chamfer or rounded corner; 16. Lamb screw; 17. Square tube; 18. Self-tapping screw; 19. Lamb; 20. Reverse edge. Detailed Implementation
[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0035] Please see Figures 1 to 8 This utility model provides a technical solution:
[0036] A split-type quick-installation straight-through connector includes:
[0037] A straight-through section A1, wherein the bottom of the straight-through section A1 has a bottom connecting part 2;
[0038] The straight section B8 includes a vertical part 10 and a horizontal part 9 installed on one side of the vertical part 10. The horizontal part 9 and the vertical part 10 are integrated.
[0039] The straight-through tube A1 is used to be fitted and connected to the square tube 17;
[0040] The bottom connecting part 2 has a slot 6 for fitting the end of the horizontal part 9. After the horizontal part 9 is inserted into the slot 6, the vertical part 10 comes into contact with the side of the straight passage A1.
[0041] The horizontal section 9 is used to connect to another square tube 17;
[0042] The bottom connecting part 2 of the straight passage A1 and the vertical part 10 of the straight passage B8 have a connection structure distributed along the radial direction.
[0043] The straight section A1 is mostly hollow, with a cavity portion a. For example... Figure 3 As shown, the cavity part a is located at the top. The functions of the cavity part a are: on the one hand, it can reduce the overall weight of the straight section, and on the other hand, it serves as a plug slot, which facilitates the insertion and fixing of connectors (such as square tubes) that are smaller in size than the straight section A1.
[0044] Specifically, the connecting structure includes a countersunk screw 7, a channel 3, and a hole 12. The channel 3 is opened radially along the bottom connecting portion 2, and the hole 12 is opened radially along the vertical portion 10 and is collinear with the central axis of the channel 3. The countersunk screw 7 passes through the channel 3 and the hole 12 and is screwed onto a nut 14 inside the vertical portion 10. The connecting structure also includes a placement groove 13, which is opened axially along the vertical portion 10 for placing the nut 14, and the placement groove 13 communicates with the hole 12.
[0045] Specifically, the horizontal part 9 has a through hole 11 along the axial direction for inserting the Ram screw 16. The bottom connecting part 2 has a receiving groove 4 for accommodating the horizontal part 9, and the receiving groove 4 has a slot 6 formed by a protrusion 5.
[0046] When using this utility model, such as Figure 2 and Figures 6 to 7 As shown, first, insert the square tube 17 into the upper part of the straight connector A1, and then fix it on both sides with self-tapping screws 18, thus fixing the straight connector A1 and the square tube 17. Next, insert the ram screw 16 into the through hole 11, and then cooperate with the ram 19 pre-installed on the other square tube 17 to fix the two. The nut 14 can be placed into the placement groove 13 in advance. After placement, the nut hole of the nut 14 is on the same straight line as the central axis of the channel 3 and the hole 12. Then, insert the straight connector B8 and the straight connector A1 close to each other, so that the end of the horizontal part 9 is adapted to be inserted into the slot 6. At this time, the horizontal part 9 is also located in the receiving groove 4. Finally, use the countersunk screw 7 to pass through the channel 3 and the hole 12 in sequence, and then screw it into the nut 14 in the placement groove 13, thus realizing the quick installation and fixing of the straight connector A1 and the straight connector B8.
[0047] This utility model utilizes a connection structure distributed along the radial direction: countersunk screws 7 pass through the channel 3 of the straight-through A1 and the hole 12 of the straight-through B8, and are then screwed into the nut 14 in the placement groove 13 of the straight-through B8, thereby achieving quick installation and fixation of the straight-through A1 and the straight-through B8; and the slot 6 is used to achieve quick positioning of the straight-through A1 and the straight-through B8; the bottom of the straight-through B8 (specifically located in the vertical part 10) has a reverse edge 20, which has a positioning function when fixing the square tube 17.
[0048] Therefore, this utility model's split-type quick-installation straight-through tube can be assembled and spliced using general square tubes, making installation simple and convenient, with a robust structure that allows for rapid installation and disassembly. Furthermore, it eliminates the need for pre-installed corner brackets, and during disassembly, the self-tapping screws 18 on the square tube 17 are not directly removed. This prevents wear on the screw holes on the square tube, avoiding situations where the screw holes become enlarged and cannot be properly tightened, thus preventing issues affecting installation accuracy and progress.
[0049] Specifically, such as Figure 1 As shown, the vertical part 10 has chamfers or rounded corners 15 on both sides that are adapted to the bottom connecting part 2. After the straight section A1 and the straight section B8 are fixed, the connection is tighter and the overall appearance is more aesthetically pleasing because the corners of the two parts are fitted with chamfers or rounded corners 15.
[0050] like Figure 5As shown, the channel 3 and hole 12 have a suitable distance from the through hole 11. When the countersunk screw 7 passes through the channel 3 of the straight-through A1 and the hole 12 of the straight-through B8, and is then screwed into the nut 14 in the placement groove 13 of the straight-through B8, thus achieving rapid installation and fixing of the straight-through A1 and straight-through B8, the ram screw 16 will not protrude outside the through hole 11. Therefore, when installing the countersunk screw 7, it will not be affected by the interference of the ram screw 16, allowing the countersunk screw 7 to be smoothly screwed in, enabling rapid installation and fixing of the straight-through A1 and straight-through B8.
[0051] It should be noted that in this utility model, the opening of the placement groove 13 is slightly larger, which makes it easier to put the nut 14 into the placement groove 13. The diameter of the placement groove 13 below the opening is the same as the diameter of the nut 14, so that after the nut 14 is put in, it is easy to align and tighten the countersunk screw 7.
[0052] It should be noted that the shape of the straight connector A1 (especially the upper part) in this utility model can be square, round, or other shapes, which not only facilitates the installation of square tubes but also facilitates the installation of tubes of other shapes. The materials of the straight connectors A1, B8, etc. can be stainless steel, PVC, or composite materials, and the materials and sizes can be flexibly selected and set according to the actual situation.
[0053] All other parts of this utility model not described herein are the same as existing technologies, or are known technologies, or can be implemented using existing technologies, and will not be described in detail here.
[0054] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A split-type quick-installation straight-through connector, characterized in that, include: The straight-through A (1) has a bottom connecting part (2) at its bottom. The straight section B (8) includes a vertical part (10) and a horizontal part (9) installed on one side of the vertical part (10). The straight-through A (1) is used to mount and connect to a square tube (17); The bottom connecting part (2) has a slot (6) for fitting the end of the horizontal part (9) into the slot (6). After the horizontal part (9) is inserted into the slot (6), the vertical part (10) contacts the side of the straight passage A (1). The horizontal section (9) is used to connect with another square tube (17); The bottom connecting part (2) of the straight passage A (1) and the vertical part (10) of the straight passage B (8) have a connection structure distributed along the radial direction.
2. The split-type quick-installation straight-through according to claim 1, characterized in that, The connection structure includes a countersunk screw (7), a channel (3) and a hole (12). The channel (3) is opened in the radial direction along the bottom connection part (2), and the hole (12) is opened in the radial direction along the vertical part (10) and is on the same straight line as the central axis of the channel (3). The countersunk screw (7) passes through the channel (3) and the hole (12) and is screwed to the nut (14) in the vertical part (10).
3. A split-type quick-installation straight-through according to claim 2, characterized in that, The connection structure also includes a placement groove (13), which is opened along the axial direction of the vertical part (10) for placing a nut (14), and the placement groove (13) is connected to the hole (12).
4. A split-type quick-installation straight-through according to claim 2, characterized in that, The horizontal part (9) has a through hole (11) along the axial direction for inserting a Ram screw (16).
5. A split-type quick-installation straight-through according to claim 1, characterized in that, The bottom connecting part (2) has a receiving groove (4) for accommodating the horizontal part (9), and a slot (6) is formed on the receiving groove (4) by a protrusion (5).
6. A split-type quick-installation straight-through according to claim 1, characterized in that, The vertical part (10) has chamfers or rounded corners (15) on both sides that are adapted to the bottom connecting part (2).
7. A split-type quick-installation straight-through according to claim 4, characterized in that, The channel (3) and hole (12) are spaced apart from the through hole (11).
8. A split-type quick-installation straight-through according to claim 1, characterized in that, The straight-through section A (1) has a cavity portion.
9. A split-type quick-installation straight-through according to claim 1, characterized in that, The bottom of the straight section B (8) has a reverse edge (20) for positioning.