CN104300324A - Combination connecting piece used for large current electrical device or wire connection - Google Patents

Abstract

The invention discloses a combined connector for high-current electrical equipment or wire connection, which includes at least one terminal lug and at least one intermediate connector. One end of the intermediate connector is always connected to the terminal lug, and the other end is used for external connection or connection with the terminal. The terminal lug is connected, the intermediate connector has a normal wire segment and a reverse wire segment, the terminal lug has an unthreaded pipe segment and a threaded segment, and the threaded segment of the terminal nose is aligned with the normal wire segment or the reverse wire segment of the intermediate connector. match. The invention has the advantages of enlarged contact surface at the joint, good mechanical reliability, convenient connection and dismantling, simplified operation procedures, and can effectively reduce failures.

Description

Combination connectors for high-current electrical equipment or wire connections

technical field

The invention relates to a combined connector for high-current electrical equipment or wire connection. the

Background technique

For a long time, the connection of electrical equipment with high voltage and high current has been the weak link in the power system. When the power load is too large, the connection point often has the problem of heating and burning out the equipment due to excessive contact resistance, causing fires and causing major safety hazards. At present, the structure of the terminal lug used in the power system is shown in Figure 14. When using it, first insert the connecting wire into the terminal tube, press it firmly with crimping pliers, then put the connecting hole on the terminal post, and tighten it with screws. The wiring lug of this structure mainly has the following problems: the contact area of the connection is small, the mechanical stability is poor, and the construction process is not simple. Any one of the above three problems can lead to the other two problems. This problem has been researched and explored for many years, but according to the current situation, it has not fundamentally solved the problem.

Contents of the invention

The purpose of the present invention is to provide a combined connector for large current electrical equipment or wire connection, which has a large contact area, good mechanical stability, and is easy to use and easy to operate.

The combined connector for high-current electrical equipment or wire connection provided by the present invention includes at least one terminal lug and at least one intermediate connector. The intermediate connector always has one end connected to the terminal lug and the other end for external connection. Or be connected with the terminal lug, the intermediate connector has a positive wire segment and a reverse wire segment, the terminal lug has an unthreaded pipe segment and a threaded segment, and the threaded segment of the terminal lug is connected to the normal wire segment or the reverse wire segment of the intermediate connector. segment matches.

As a preferred mode of the present invention, the terminal lug has an auxiliary wrench position, and the intermediate connector has a main wrench position. A parallel cap is provided to match the lug or the intermediate connector. The intermediate connector is an internally threaded pipe, the outer surface of which is in the shape of a hexagonal prism or the middle part is a hexagonal prism, and the part of the hexagonal prism is used as the main wrench position.

As a preferred method of the present invention, the intermediate connector has the following types: one section of the intermediate connector is an internally threaded pipe, and one section is an external threaded screw, and the main wrench is located between the internally threaded pipe and the external threaded screw. The normal thread section and the reverse thread section of the intermediate connector are both external thread screws, and the main wrench is located between the normal thread section and the reverse thread section.

In order to further make the connection between wires or equipment stable, an anti-rotation washer is installed at the auxiliary wrench position of the terminal lug or the main wrench position of the intermediate connector. The anti-rotation washer includes a pressed washer and two anti-rotation cards. The above-mentioned two anti-rotation cards form a flat angle and are located on the outer periphery of the pressed washer, forming an integral body with the pressed washer. The two anti-rotation cards can be bent along their respective bottom edges, and the distance between the bottom edge of the anti-rotation card and the center of the pressed washer is less than that of a wrench The radius of the circumcircle of the bit or the circumscribed circle of the cap is used to prevent the terminal lug from rotating relative to the intermediate connector. The anti-rotation washer is installed between the auxiliary wrench position of the terminal lug and the main wrench position of the intermediate connector. on the master wrench on the connector. The anti-rotation washer can also be installed between the main wrench position and the union cap on the intermediate connector, so that the two anti-rotation cards of the anti-rotation washer can be bent on the main spanner position and the union cap of the intermediate connector respectively .

Compared with the prior art, the present invention has the following advantages:

1. The contact surface at the joint increases;

2. Save the equipment clamps for transitional connections, reducing the point of failure;

3. The mechanical reliability of the connection is good, which can effectively reduce the influence of electric power on the connection;

4. The connection is easy to remove, and the operation process is simplified.

5. It is suitable for the connection between various high-current wires or equipment, and can be used for the connection of non-tension wires, the connection of wires and electrical equipment, and the connection between electrical equipment.

Description of drawings

Fig. 1 is a structural schematic diagram of a component lug of the present invention.

Fig. 2 is a schematic diagram of the second structure of the wiring lug.

Fig. 3 is a structural schematic diagram of the intermediate connector of the components of the present invention.

Fig. 4 is a second structural schematic diagram of the intermediate connector.

Fig. 5 is a schematic diagram of the third structure of the intermediate connector.

Fig. 6 is a schematic diagram of a fourth structure of the intermediate connector.

Fig. 7 is a structural schematic diagram of the anti-rotation washer of the component of the present invention.

FIG. 8 is a schematic structural diagram of Embodiment 1 of the present invention.

Fig. 9 is an installation diagram of Fig. 8 .

Fig. 10 is another structural schematic diagram of an embodiment of the present invention.

Fig. 11 is a schematic structural diagram of Embodiment 2 of the present invention.

Fig. 12 is another structural schematic diagram of Embodiment 2 of the present invention.

Fig. 13 is a schematic structural diagram of Embodiment 3 of the present invention.

Fig. 14 is a schematic structural diagram of the prior art.

Detailed ways

As can be seen from Fig. 1, a structure of the component lug 1 of the present invention, the lug 1 includes a threadless pipe section 11 and a threaded section 12, the unthreaded pipe section 11 is mainly used for connecting wires, and the wires are inserted into the pipe section and then crimped. Allow the wire to have the largest area of contact with the lug. The threaded section 12 is an external threaded rod, or an internal threaded pipe, as shown in FIG. 2 . An auxiliary wrench position 13 is arranged on the threaded section 12 . The threaded section 12 is mainly used for connecting with the intermediate connector 2 .

A structure of the intermediate connector 2 of the components of the present invention can be seen from FIG. 3 . The intermediate connector 2 has a straight wire section 21 , a reverse wire section 22 , and a main wrench position 23 . The intermediate connector 2 adopts an internally threaded pipe, the outer surface of which is in the shape of a hexagonal column, and the entire length is used as the main wrench position 23, which is very convenient to use. It is also possible to adopt a hexagonal prism in the middle, and the two sides are cylindrical, and the middle is used for the main wrench position 23, as shown in Figure 4. The intermediate connector 2 can also adopt a section of internally threaded pipe and a section of external threaded screw, with a wrench between the internally threaded pipe and the externally threaded screw, as shown in Figure 5 . It is also possible to use external screw rods for both sections, with the wrench position in the middle, as shown in Figure 6.

As can be seen from Fig. 7, the component anti-rotation washer 4 of the present invention, the anti-rotation washer includes a pressed washer 41 and two anti-rotation cards 42, which form a flat angle between the two anti-rotation cards and are located on the outer periphery of the pressed washer, forming a As a whole, the two anti-rotation cards can be bent along their respective bottom edges, and the distance from the bottom edge of the anti-rotation card to the center of the pressed washer is smaller than the wrench position or the radius of the circumscribed circle of the combined cap. Or the wrench position is bent to limit the rotation of the parallel cap or the wrench position, preventing the wiring lug from rotating relative to the intermediate connector.

Embodiment 1: It can be seen from FIG. 8 and FIG. 9 that this embodiment has a lug 1 , an intermediate connector 2 , and an anti-rotation washer 4 . The threaded section 12 of the terminal lug 1 adopts an external screw, and there is an auxiliary wrench position 13 between the threaded section 12 and the unthreaded pipe section. The intermediate connector 2 adopts an internally threaded pipe. Used as master wrench bit 23. The anti-rotation washer 4 is inserted into the outer wire screw of the terminal lug 1. After the outer wire screw is tightly connected with the intermediate connector, bend the two anti-rotation clips 41 of the anti-rotation washer toward the auxiliary wrench position 13 of the terminal lug. , attached to one plane of the auxiliary wrench position, the other anti-rotation card is bent towards the main wrench position of the intermediate connector, and attached to a plane of the auxiliary wrench position, the distance from the bent bottom edge of the anti-rotation card to the center of the pressed washer It is smaller than the circumscribed circle radius of the auxiliary wrench position of the connector, and the corresponding anti-rotation card is also smaller than the circumscribed circle radius of the main wrench position of the intermediate connector. After the anti-rotation card is bent, the relative rotation between the terminal nose 1 and the intermediate connector 2 is impossible . If there is no parallel cap, the anti-rotation washer is placed between the main and auxiliary wrench positions; if there is a parallel cap, the anti-rotation washer is placed between the parallel cap and the intermediate connector.

For Embodiment 1, when the structure of the terminal lug remains unchanged, the middle connector is still an internal threaded pipe, but the main wrench is in the middle, and the two sides are cylindrical, as shown in Figure 9. Add a combined cap 3 on the screw rod, after connecting the terminal lug and the intermediate connector tightly, the combined cap and the intermediate connector are tightened so that relative rotation can not take place between the terminal lug and the intermediate connector.

This embodiment can be used for conductive connection in various working conditions:

For example, it can be used for the connection of non-tension wires. In this case, two lugs should be used. There are two methods of connection operation: one is to insert a wire into the unthreaded pipe section of a lug, and fix it by crimping; the other One wire is inserted into the unthreaded pipe section of the other terminal lug, and fixed by crimping, then the anti-rotation washer and cap are put on the terminal lug 1, and the terminal lug 1 is threaded to the intermediate connector 2, and the terminal lug The parallel cap 23 on the screw rod is tightened, and the anti-rotation card of the anti-rotation washer is pressed down to complete the connection between the two wires. In another way, the two lugs can be connected to the middle connector first, and then the wires can be inserted into the terminals and pressed tightly to complete the connection between the two wires. Unclamp the joint cap during removal, open the anti-rotation card 41, turn the terminal nose 1 by the main wrench position 13 of the intermediate connector, the connecting wire terminals can withdraw from the connection at the same time, and complete the removal work.

Another example can be used for the connection of wires and electrical equipment. In this case, the terminals of the electrical equipment should all have external threads. One end is connected to the electrical equipment terminal to complete the connection between the wire and the electrical equipment. The removal method is the same as above. Loosen the anti-rotation card of the coupling cap and the anti-rotation washer, and then turn the middle connector to exit the connection between the equipment and the wire.

Another example is that it can be used for electrical connection between devices. In this case, two lugs 1 and two intermediate connectors 2 are used. Both devices should have threaded terminal posts, and the two terminal lugs 1 are connected with wires, and one end of the two intermediate connectors 2 is respectively connected to the terminal lugs and the other end is connected to the equipment to complete the electrical connection between the two devices. When removing the connection between the two devices, also loosen the union cap 3 and the anti-rotation card 41, and then turn the middle connector 2 to complete the removal work.                       

Embodiment 2: Figure 11 reflects the structure of Embodiment 2. Compared with Embodiment 1, this embodiment also has a terminal lug and an intermediate connector. The difference is that the structures of the terminal lug 1 and the intermediate connector 2 are different. This embodiment The terminal lug 1 still includes an unthreaded pipe section and a threaded section, and the threaded section adopts an internally threaded pipe, the outer wall of the internally threaded pipe is a hexagonal prism, and the entire length is used as a wrench position. The normal thread section and the anti-thread section of the intermediate connector 2 are external thread screws, and the wrench is located between the normal thread section and the anti-thread section. Two anti-rotation washers 4 are respectively connected to the normal wire section and the reverse wire section of the middle connector 2. After the connection lug 1 and the middle connector 2 are tightly connected, bend the anti-rotation card 41 on the anti-rotation washer 4 and wire The nose 1 and the middle connector 2 cannot rotate relative to each other, and the stable connection effectively prevents fire hazards caused by unstable electrical connections. If there is no parallel cap, the anti-rotation washer is placed between the main and auxiliary wrench positions; if there is a parallel cap, the anti-rotation washer is placed between the parallel cap and the intermediate connector.

For the second embodiment, under the condition that the structure of the intermediate connector 2 remains unchanged, the threaded section of the lug 1 is an internally threaded pipe, and there is an auxiliary wrench between the internally threaded pipe and the non-threaded pipe. The two sides are cylindrical, and the middle connection The head is the same as the second embodiment, as shown in Figure 12, at this time, the connecting cap 3 can be added to the outer screw of the intermediate connecting head, after connecting the lug 1 and the intermediate connecting head 2 tightly, tighten the connecting cap 3, For a solid connection.

Embodiment 3: Figure 13 reflects the structure of Embodiment 3. Compared with the above two embodiments, this embodiment also has a terminal lug 1 and an intermediate connector 2, but the structure of the intermediate connector 2 is different. The intermediate connection of this embodiment The head 2 adopts a section of internal threaded pipe and a section of external thread screw, and the threaded section of the lug 1 should match the two threaded sections of the intermediate connector. In the case where two lugs are required, the threaded section of one lug is an outer threaded screw, and the threaded section of the other lug is an inner threaded pipe. The use of the anti-rotation washer 4 and the cap 3 is the same as above.

In a word, the terminal lug and the intermediate connector in the connection assembly of the present invention can be selected and matched according to the actual situation. No matter which combination, the present invention has stable connection, good mechanical performance, large connection contact area, and is suitable for the connection of large current wires or equipment. , can effectively avoid fires caused by electrical connection problems. The present invention has achieved good results in the trial process.

Claims (9)

1. A combined connector for high-current electrical equipment or wire connection, including at least one lug (1), characterized in that it also includes at least one intermediate connector (2), and the intermediate connector (2) always has one end connected to the wire Nose (1) connection, the other end is used for external connection or connection with the wiring nose, the intermediate connector has a straight wire section (21) and a reverse wire section (22), and the wiring nose has a non-threaded pipe section (11) And the threaded section (12), the threaded section (12) of the lug is matched with the positive wire section or the reverse wire section of the intermediate connector (2). 2. The combined connector for high-current electrical equipment or wire connection according to claim 1, characterized in that the terminal lug has an auxiliary wrench position (13), and the intermediate connector has a main wrench position (23). 3. The combined connector for high-current electrical equipment or wire connection according to claim 1, characterized in that there is a parallel cap (3) matching the terminal lug or the intermediate connector. 4. The combined connector for high-current electrical equipment or wire connection according to claim 2, characterized in that the intermediate connector is an internally threaded pipe, the outer surface of which is in the shape of a hexagonal prism or the middle part is in the shape of a hexagonal prism, with six The prismatic part serves as the main wrench bit (23). 5. The combined connector for high-current electrical equipment or wire connection according to claim 2, characterized in that one section of the intermediate connector is an internally threaded pipe, and one section is an external screw, and the main wrench (23) is inside Between the threaded pipe and the male screw. 6. The combined connector for high-current electrical equipment or wire connection according to claim 2, characterized in that the positive wire section and the reverse wire section of the intermediate connector are both outer wire screws, and the main wrench position (23) Between the straight wire segment (21) and the reverse wire segment (22). 7. The combination connector for high-current electrical equipment or wire connection according to claim 2 or 3, characterized in that the auxiliary wrench position (13) of the terminal lug (1) or the main wrench of the intermediate connector (2) The position (23) is equipped with an anti-rotation washer (4). The anti-rotation washer includes a pressed washer (41) and two anti-rotation cards (42). (41) The outer periphery is integral with the pressed washer. The two anti-rotation cards (42) can be bent along their respective bottom edges. The distance from the bottom edge of the anti-rotation card (42) to the center of the pressed washer (41) is less than the wrench position. The radius of the circle or the circumscribed circle of the parallel cap is used to prevent the lug (1) from rotating relative to the intermediate connector (2). 8. The combined connector for high-current electrical equipment or wire connection according to claim 7, characterized in that the anti-rotation washer is installed on the auxiliary wrench position (13) of the terminal lug and the main wrench of the intermediate connector Between the positions (23), the two anti-rotation clips used for the anti-rotation washers can be respectively bent on the auxiliary wrench position (13) of the wiring nose and the main wrench position of the intermediate connector. 9. The combined connector for high-current electrical equipment or wire connection according to claim 7, characterized in that the anti-rotation washer is installed between the auxiliary wrench position (13) of the terminal lug and the parallel cap (3) or between the main wrench position (23) and the parallel cap (3) on the intermediate connector, the two anti-rotation clips used for the anti-rotation washer (4) can be respectively bent on the auxiliary wrench position and And the caps, or the two anti-rotation cards can be bent on the main wrench position of the middle connector and on the caps.