Leakage-proof copper-aluminum connecting pipe

Abstract

The utility model provides a leakproof copper-aluminum connecting pipe which comprises a connecting pipe body, arc-shaped pressing plates are arranged in the aluminum end and the copper end of the connecting pipe body, two thickening blocks are fixed to one side of each arc-shaped pressing plate at intervals, threaded grooves are formed in the thickening blocks, a plurality of sliding columns are arranged on one side of the connecting pipe body, and the sliding columns are connected with the connecting pipe body. A threaded groove is formed in the connecting pipe body, a sliding column is arranged in the threaded groove, external threads are arranged on the sliding column, one end of the sliding column is inserted into the connecting pipe body and screwed into the threaded groove, a plurality of bolts are arranged on one side of the connecting pipe body, the threaded ends of the bolts are inserted into the connecting pipe body and extend to the surface of the arc-shaped pressing plate, and the connecting pipe body is located in the heat shrink pipe. According to the utility model, the problems that the tensile strength is low because the contact surface between the bolt and the lead is small and the friction force between the bolt and the lead is small, and the lead is easy to loosen and fall off especially under vibration or external force pulling are solved.

Description

Technical Field

[0001] This utility model relates to the field of copper-aluminum pipe fittings, and in particular to a leak-proof copper-aluminum pipe fitting. Background Technology

[0002] Copper-aluminum conduit (also known as copper-aluminum transition conduit or copper-aluminum connector) is a component specifically designed to connect copper and aluminum wires, aiming to avoid electrochemical corrosion (galvanic cell reaction) caused by direct contact between the two metals.

[0003] Bolted copper-aluminum conduits have advantages such as being detachable, adaptable to a certain range of wire diameters (by adjusting the bolt pressure), and convenient for later maintenance or replacement. However, when in use, the bolt directly applies pressure to the wire to fix it. Due to the small contact area between the bolt and the wire, the friction between them is small, resulting in low tensile strength. Especially under vibration or external pulling force, the wire is prone to loosening and falling off.

[0004] Therefore, it is necessary to provide a new leak-proof copper-aluminum pipe to solve the above-mentioned technical problems. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a leak-proof copper-aluminum connector, which solves the problem that the low tensile strength caused by the small contact area between the bolt and the wire, resulting in low friction, makes the wire easy to loosen and fall off, especially under vibration or external pulling force.

[0006] The leak-proof copper-aluminum connector provided by this utility model includes a connector body. Both the aluminum end and the copper end of the connector body are provided with arc-shaped pressure plates. Two thickened blocks are fixed at intervals on one side of the arc-shaped pressure plates. Threaded grooves are opened on the thickened blocks.

[0007] A plurality of sliding pins are provided on one side of the connector body. The sliding pins are provided with external threads. One end of the sliding pin is inserted into the connector body and screwed into the threaded groove.

[0008] Several bolts are provided on one side of the connector body, and the threaded end of the bolt is inserted into the connector body and extends to the surface of the arc-shaped pressure plate.

[0009] In a preferred embodiment, the bolt is threadedly connected to the pipe body.

[0010] In a preferred embodiment, the sliding pin is slidably connected to the pipe body.

[0011] In a preferred embodiment, a heat shrink tubing is also included, with the connector body located inside the heat shrink tubing.

[0012] In a preferred embodiment, the arc-shaped pressure plate is coated with conductive paste.

[0013] The beneficial effects of this utility model are:

[0014] When assembling this copper-aluminum connector, the operator can move the corresponding arc-shaped pressure plate into the copper or aluminum end of the connector body, and then pass the threaded end of the sliding column through the connector body and screw it into the threaded groove to complete the installation of the arc-shaped pressure plate. The operation is simple and convenient.

[0015] Heat the heat shrink tubing to shrink both ends to the cable sheath. At this time, the middle part can tightly wrap the connector body, which is waterproof and moisture-proof, and prevents water or dirt from seeping into the connector body, which may cause leakage or short circuit risk.

[0016] In use, insert the wire to be connected into the inside of the connector body, screw in the bolt to apply pressure to the arc-shaped pressure plate, and the wire can be fixed by the arc-shaped pressure plate. The contact between the arc-shaped pressure plate and the wire greatly increases the contact area, reduces the contact resistance, increases the tensile strength of the contact surface, and avoids connection failure. Attached Figure Description

[0017] Figure 1 The main structure of the leak-proof copper-aluminum pipe provided by this utility model is shown in a three-dimensional view. Figure 1 ;

[0018] Figure 2 The main structure of the leak-proof copper-aluminum pipe provided by this utility model is shown in a three-dimensional view. Figure 2 ;

[0019] Figure 3 The main structural side view of the leak-proof copper-aluminum pipe provided by this utility model.

[0020] The following are labeled in the diagram: 1. Connector body; 2. Arc-shaped pressure plate; 3. Thickened block; 4. Threaded groove; 5. Sliding column; 6. External thread; 7. Bolt; 8. Heat shrink tubing; 9. Conductive paste. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Please refer to the following: Figure 1 , Figure 2 as well as Figure 3 ,in Figure 1 The main structure of the leak-proof copper-aluminum pipe provided by this utility model is shown in a three-dimensional view. Figure 1 ; Figure 2 The main structure of the leak-proof copper-aluminum pipe provided by this utility model is shown in a three-dimensional view. Figure 2 ; Figure 3 The main structural side view of the leak-proof copper-aluminum pipe provided by this utility model.

[0023] In the specific implementation process, such as Figures 1-3As shown, the connector includes a connector body 1. Both the aluminum and copper ends of the connector body 1 are equipped with arc-shaped pressure plates 2. Two thickened blocks 3 are fixed at intervals on one side of the arc-shaped pressure plates 2. Threaded grooves 4 are formed on the thickened blocks 3. Several sliding pillars 5 are provided on one side of the connector body 1. External threads 6 are provided on the sliding pillars 5. One end of the sliding pillar 5 is inserted into the connector body 1 and screwed into the threaded groove 4, thus slidably connecting the sliding pillar 5 to the connector body 1. Several bolts 7 are provided on one side of the connector body 1. The threaded ends of the bolts 7 are inserted into the connector body 1 and extend... On the surface of the arc-shaped pressure plate 2, the bolt 7 is threadedly connected to the connector body 1. During the assembly of this copper-aluminum connector, the operator can move the corresponding arc-shaped pressure plate 2 into the copper or aluminum end inside the connector body 1, and then pass the threaded end of the sliding column 5 through the connector body 1 and screw it into the threaded groove 4 to complete the installation of the arc-shaped pressure plate 2. The arc-shaped pressure plate 2 used in this application is specifically arc-shaped. The curvature of the arc-shaped pressure plate 2 matches the outer diameter of the wire, forming a surface contact, increasing the effective conductive area by 20%~30%, according to the formula Q=I. 2 As can be seen from Rt, after the contact resistance (R) decreases, the Joule heat (Q) decreases significantly, avoiding overheating and oxidation. At the same time, the arc-shaped pressure plate 2 disperses the concentrated pressure of the bolt 7 to the entire surface of the conductor, reducing the cutting or indentation damage to the aluminum wire (which is relatively soft) during crimping.

[0024] It also includes heat shrink tubing 8. The connector body 1 is located inside the heat shrink tubing 8. After the cable to be connected is connected through the connector body 1, the heat shrink tubing 8 is heated so that its two ends shrink to the cable sheath. At this time, the middle part can tightly wrap the connector body 1, which is waterproof and moisture-proof, and prevents water or dirt from seeping into the inside of the connector body 1, which may cause leakage or short circuit risk.

[0025] The arc-shaped pressure plate 2 is coated with conductive paste 9. Applying conductive paste 9 can fill the microscopic gaps on the contact surface, isolate oxygen and moisture, inhibit oxidation and reduce contact resistance. The resistance reduction effect can reach more than 30%.

[0026] The working principle of this utility model is as follows: When assembling this copper-aluminum connector, the operator can move the corresponding arc-shaped pressure plate 2 into the copper end or aluminum end inside the connector body 1, and then pass the threaded end of the sliding column 5 through the connector body 1 and screw it into the threaded groove 4 to complete the installation of the arc-shaped pressure plate 2.

[0027] In use, insert the wire to be connected into the inside of the connector body 1, and screw in the bolt 7 to apply pressure to the arc-shaped pressure plate 2. The arc-shaped pressure plate 2 can fix the wire. The contact between the arc-shaped pressure plate 2 and the wire greatly increases the contact area, reduces the contact resistance, increases the tensile strength of the contact surface, and avoids connection point failure.

[0028] The circuits and controls involved in this utility model are all existing technologies, and will not be described in detail here.

[0029] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A leak-proof copper-aluminum pipe, comprising a pipe body (1), characterized in that, The aluminum end and copper end of the connector body (1) are both provided with arc-shaped pressure plates (2). Two thickened blocks (3) are fixed at intervals on one side of the arc-shaped pressure plate (2). Threaded grooves (4) are opened on the thickened blocks (3). A plurality of sliding pins (5) are provided on one side of the connector body (1). The sliding pins (5) are provided with external threads (6). One end of the sliding pins (5) is inserted into the connector body (1) and screwed into the threaded groove (4). A number of bolts (7) are provided on one side of the pipe body (1). The threaded end of the bolts (7) is inserted into the pipe body (1) and extends to the surface of the arc-shaped pressure plate (2).

2. The leak-proof copper-aluminum pipe according to claim 1, characterized in that, The bolt (7) is threadedly connected to the pipe body (1).

3. The leak-proof copper-aluminum pipe according to claim 2, characterized in that, The sliding column (5) is slidably connected to the pipe body (1).

4. The leak-proof copper-aluminum pipe according to claim 3, characterized in that, It also includes a heat shrink tubing (8), with the connector body (1) located inside the heat shrink tubing (8).

5. The leak-proof copper-aluminum pipe according to claim 4, characterized in that, The arc-shaped pressure plate (2) is coated with conductive paste (9).

Images