Internal direct multi-pass type square tube quick connector

Abstract

The utility model belongs to the technical field of pipe fitting connection, and relates to an internal direct multi-pass type square pipe quick connector which comprises a base and a conical pipe, and a first square pipe is fixedly installed on the outer wall of one side of the base. The connecting piece has the advantages that the square pipe, the jackscrew, the conical pipe, the two-way pipe, the three-way pipe, the four-way pipe, the five-way pipe and other standard connecting pieces are arranged, the inner diameters of all connectors are uniform, the connecting piece can be matched with square pipes and rectangular pipes with different wall thicknesses, the universality and interchangeability of the connecting piece are greatly improved, the symmetrical design is adopted, and the connecting piece is convenient to use. The connecting piece is composed of a plurality of cast steel connecting pieces which are symmetrically distributed, one connecting piece is provided with two holes with threads and is provided with two high-strength inner hexagonal jackscrews, the opening and closing size of the two symmetrical blocks can be accurately controlled by controlling the tightness of the screws so as to adapt to pipes of different specifications, the single-joint assembling time is shorter than 30 seconds, pre-drilling or welding is not needed, and the assembling efficiency is greatly improved. And the construction period is greatly shortened.

Description

Technical Field

[0001] This utility model relates to the field of pipe fitting connection technology, specifically to an internal direct multi-port square tube quick connector. Background Technology

[0002] Traditional square tube connection methods mainly rely on welding or external bolts. Welding is not only inefficient and requires highly skilled workers, but the high temperatures generated during welding can damage the anti-corrosion coating on the pipe surface, affecting the pipe's service life. External bolt connections require pre-drilling holes in the pipe, making the installation process cumbersome. Furthermore, after repeated disassembly and assembly, the bolt holes are easily damaged, making repeated disassembly and assembly impossible.

[0003] While some existing connection methods using wide-mouth sockets simplify the installation process to some extent, they cannot guarantee the flatness of the installation base. When the connection surface is uneven, it will bring great difficulties to the installation of exterior panels, affecting the overall construction quality and aesthetics.

[0004] Commercially available weld-free connectors, such as flared socket connectors, have insufficient strength when connected to square tubes, making it impossible to achieve a tight fit. Under significant external forces, they are prone to loosening or falling off, affecting the stability of the structure. Utility Model Content

[0005] To address the problems mentioned in the background section, this invention provides an internally direct multi-port square tube quick-connect fitting, comprising a square tube and a set screw. This solves the problem that commercially available weld-free connectors, such as flared socket connectors, lack sufficient strength when connected to square tubes, failing to achieve a tight fit. Under significant external forces, they are prone to loosening and detachment, affecting structural stability.

[0006] The technical solution of this utility model is: an internal direct multi-port square tube quick connector, including a base and a tapered tube. A square tube one is fixedly installed on one side outer wall of the base, and a square tube two is fixedly installed on the four sides outer walls of the base. An installation hole is opened inside one side wall of the square tube two, and a set screw is provided inside the installation hole. The tapered tube is fixedly installed on the other side outer wall of the square tube one and the square tube two respectively. A ball groove is opened on the other side inner wall of the square tube two.

[0007] Furthermore, the square tube 2 is provided with multiple groups, including one, two, three, four, five, and six groups.

[0008] Furthermore, the larger end of the tapered tube is connected to square tube one and square tube two, while the smaller end of the tapered tube faces outward.

[0009] Furthermore, the square tube is used to connect vertical pipe fittings, which can be directly sleeved together.

[0010] Furthermore, the set screw engages with the ball groove during pipe fitting connection.

[0011] This utility model provides an improved internal direct multi-port square tube quick-connect fitting, which has the following improvements and advantages compared with the prior art:

[0012] With standardized connectors including square tubes, set screws, tapered tubes, two-way, three-way, four-way, and five-way connectors, all interfaces have a uniform inner diameter, adaptable to square and rectangular tubes of different wall thicknesses. This greatly improves the versatility and interchangeability of the connectors. The symmetrical design consists of multiple symmetrically distributed cast steel connectors, one of which has two threaded holes and two high-strength internal hexagonal set screws. By controlling the tightness of the screws, the opening and closing dimensions of the two symmetrical blocks can be precisely controlled to accommodate different pipe specifications. Single-node assembly time is less than 30 seconds, requiring no pre-drilling or welding, significantly shortening the construction cycle. Compared to traditional connection methods, installation efficiency is increased by 300%, and strength is significantly enhanced: the tensile strength of the cast steel parts is ≥500MPa, twice that of welded square steel parts, better able to withstand external forces and ensure structural stability. Attached Figure Description

[0013] The present invention will be further explained below with reference to the accompanying drawings and embodiments:

[0014] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0015] Figure 2 This is a lower half sectional perspective view of the present invention;

[0016] Figure 3 This is a three-dimensional cross-sectional view of the upper half of the present invention;

[0017] Explanation of reference numerals in the attached drawings: 1. Base; 2. Square tube one; 3. Square tube two; 4. Mounting hole; 5. Set screw; 6. Tapered tube; 7. Ball groove. Detailed Implementation

[0018] The following will be combined with the appendix Figures 1 to 3 This utility model will be described in detail, and the technical solutions in the embodiments of this utility model will be clearly and completely described. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0019] This utility model provides an improved internal direct multi-port square tube quick-connect fitting, such as... Figure 1-3As shown in the figure, the system includes a base 1 and a tapered tube 6. A square tube 2 is fixedly installed on one outer wall of the base 1, and square tubes 3 are fixedly installed on all four outer walls of the base 1. A mounting hole 4 is opened inside one side wall of square tube 3, and a set screw 5 is installed inside the mounting hole 4. The tapered tube 6 is fixedly installed on the outer wall of the other end of square tube 2 and square tube 3 respectively. A ball groove 7 is opened on the inner wall of the other side of square tube 3. With the square tubes, set screws 5, and tapered tubes 6, standardized connectors such as two-way, three-way, four-way, and five-way connectors are provided. The inner diameter of all interfaces is uniform, which can adapt to square and rectangular tubes with different wall thicknesses, greatly improving the versatility and interchangeability of the connectors. The system features a symmetrical design, consisting of multiple symmetrically distributed cast steel connectors. One connector has two threaded holes and two high-strength internal hexagonal set screws. By controlling the tightness of these screws, the opening and closing dimensions of the two symmetrical blocks can be precisely controlled to accommodate different pipe specifications. The assembly time for a single node is less than 30 seconds, eliminating the need for pre-drilling or welding, thus significantly shortening the construction cycle. Compared to traditional connection methods, installation efficiency is increased by 300%, and strength is significantly enhanced: the tensile strength of the cast steel components is ≥500MPa, which is twice the strength of welded square steel components, enabling better resistance to external forces and ensuring structural stability.

[0020] The square tube 23 is equipped with multiple sets, including one, two, three, four, five, and six sets. The multi-port design enhances the flexibility and broadens the applicability of the device. The outer surface of the connector is flush with the end face of the square tube, forming a continuous reference surface with an error ≤0.5mm. This design meets the seamless installation requirements of building materials such as gypsum board and aluminum panels, improving the overall decorative effect of the building. It boasts strong compatibility, adapting to 30×30 to 50×50mm square tubes with wall thicknesses of 0.8-4mm, making it suitable for a wide range of building projects.

[0021] The larger end of the tapered tube 6 connects to square tube 2 and square tube 3, while the smaller end of the tapered tube 6 faces outwards. A single-angle insertion method is used, with a guide cone at the end of the connector to facilitate insertion into the square tubes. After insertion, a gentle tap is sufficient to secure it in place, followed by secondary reinforcement with a self-tapping screw to further enhance the reliability of the connection.

[0022] Square tube 12 is used to connect vertical pipe fittings. It can be directly sleeved. Square tube 12 is suitable for quick-connect square tubes that connect vertically. The upper sleeve can be directly sleeved on the top of square tube 12 and can be installed under its own weight.

[0023] The set screw 5 engages with the ball groove 7 during pipe connection. The square tube assembly is made of cast steel with anti-slip serrations on the surface to increase friction with the inner wall of the pipe and ensure connection stability. The two high-strength set screws 5 can be used with square tubes with wall thicknesses of 0.8-4mm, making it widely applicable.

[0024] The working principle of this utility model is as follows: Taking the four-way connector as an example, the specific installation steps are as follows: First, align the guide cone angle of the four-way connector with the end of the square tube, gently tap it to insert it into the square tube, then use a self-tapping screw to initially fix it, and finally, by adjusting the high-strength internal hexagonal set screw 5, make the symmetrical cast steel connector tightly fit the inner wall of the square tube to complete the installation. The internal expansion type quick assembly connector for square tube proposed in this utility model effectively solves many problems existing in traditional square tube connections, has significant technical advantages and broad application prospects, and is expected to be promoted and applied in the field of building structure connection technology.

[0025] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0026] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A quick-connect fitting for a square tube with an internal direct multi-port design, comprising a base (1) and a tapered tube (6), characterized in that: A square tube (2) is fixedly installed on one side of the outer wall of the base (1), and a square tube (3) is fixedly installed on the four sides of the outer wall of the base (1). An installation hole (4) is opened inside one side wall of the square tube (3), and a set screw (5) is provided inside the installation hole (4). The tapered tube (6) is fixedly installed on the outer wall of the other end of the square tube (2) and the square tube (3) respectively. A ball groove (7) is opened on the inner wall of the other side of the square tube (3).

2. The quick-connect fitting for internally direct multi-port square tubes as described in claim 1, characterized in that: The square tube 2 (3) is provided with multiple groups, which can be one, two, three, four, five and six groups.

3. The quick-connect fitting for internally direct multi-port square tubes as described in claim 1, characterized in that: The larger end of the tapered tube (6) is connected to square tube one (2) and square tube two (3), while the smaller end of the tapered tube (6) faces outward.

4. The quick-connect fitting for internally direct multi-port square tubes as described in claim 1, characterized in that: The square tube (2) is used to connect vertical pipe fittings, and can be directly sleeved.

5. The quick-connect fitting for internally direct multi-port square tubes as described in claim 1, characterized in that: The set screw (5) engages with the ball groove (7) during pipe fitting connection.

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