Copper bar connecting piece with integrated structure

Abstract

The utility model relates to the field of copper bar connecting sheets, in particular to a copper bar connecting sheet with an integrated structure, which comprises a copper bar main body, a front row of needles, a rear row of needles, a threading port and an anti-slip sleeve, wherein the front row of needles and the rear row of needles are integrally formed at the front end and the rear end of the copper bar main body respectively; the front-row needle and the rear-row needle are respectively provided with a circular threading opening with an internal thread, an anti-skid sleeve piece is arranged in each threading opening, a connecting wire penetrates through the threading openings and is clamped into the anti-skid sleeve pieces, and a bolt is screwed into the threading openings and compresses and fixes the connecting wire; according to the utility model, through improving the design of the hole on the original copper bar pin header, the anti-slip sleeve can be used for fixing the penetrated connection wire, and compared with the original pin header structure, the connection wire can be prevented from sliding in the threading hole to a certain extent to influence the use safety when the connection wire is installed or after a bolt is loosened, and the service life of the copper bar pin header is prolonged. The utility model solves the problems that the wiring is easy to slide in the pin hole of the pin header and the electrical connection performance and the use safety are influenced because the existing copper bar adopts a threading fixing mode.

Description

Technical Field

[0001] The utility model relates to the field of copper bar connecting pieces, in particular to a copper bar connecting piece with an integrated structure. Background Technique

[0002] As a power connection terminal structure, copper bars are widely used in electrical equipment, especially complete switchgear assemblies, and are an important part of the circuit system. There are generally two ways of copper bar wiring at present. One is to directly press and fix the wiring on the surface of the pin through bolts, and the other is to thread the wiring through the holes on the pins and then use screws and nuts to screw and tighten to press the wiring.

[0003] Among them, the method of threading the wiring through the holes on the pins and then using screws and nuts to screw and tighten to press the wiring is more stable than directly pressing with bolts and is not easily detached from the pins due to the loosening of the bolts. However, for existing copper bars, especially the copper bars with integrated multiple pins, the wire-passing holes are all round-hole structures. During the wire-passing process or in use, when the screw loosens, the wiring is prone to slide inside the hole, affecting the use safety.

[0004] Therefore, aiming at the situation that the wiring is prone to slide inside the pin holes of the existing copper bars in the wire-passing fixing method, which affects the power connection performance and use safety, an integrated copper bar for improving the pin holes of the copper bar can be designed. When fixing the wiring, combined with bolt fastening, not only the wiring is firmly fixed, but also during the installation process or when the bolt loosens, the wiring is not prone to slide inside the hole. Content of the Utility Model

[0005] In order to overcome the problem that in the existing copper bar wire-passing fixing method, the wiring is prone to slide inside the pin holes, affecting the power connection performance and use safety.

[0006] The technical solution of the utility model is: an integrated copper bar connecting piece, including a copper bar main body, a front row of pins and a rear row of pins integrally formed at the front and rear ends of the copper bar main body respectively, a wire-passing hole, and an anti-slip kit; circular wire-passing holes with internal threads are provided on both the front row of pins and the rear row of pins, and an anti-slip kit is arranged inside the wire-passing holes. The wiring is inserted through the wire-passing hole and clamped into the anti-slip kit, and a bolt is screwed into the wire-passing hole to press and fix the wiring.

[0007] Preferably, after the user fixes the copper bar main body on the installation platform, the spliced cables are sequentially inserted through the corresponding wire-passing holes on the front row of pins or the rear row of pins and clamped into the anti-slip kit, and then the bolt is screwed into the wire-passing hole. The side wall of the bolt presses the wiring part inserted into the wire-passing hole inside the anti-slip kit. At the same time, the top cap of the bolt also presses the wiring exposed outside the wire-passing hole on the surface of the front row of pins or the rear row of pins.

[0008] Preferably, two gussets are integrally formed at the rear end of the copper busbar body symmetrically left and right. The gussets form a 90-degree angle with the copper busbar body. An anchoring sleeve is heat-melted and connected to the gussets, and a screw hole penetrating through to the anchoring sleeve is provided on the gussets. When installing the copper busbar body, align the gussets with the installation platform, insert a bolt through the gussets and the anchoring sleeve, and screw it into the installation platform for fixation.

[0009] Preferably, two embedding grooves are symmetrically formed on the left and right surfaces of the copper busbar body. Heat shrinkable tubes are coated on the upper and lower surfaces of the copper busbar body. The insulating layer of the heat shrinkable tube shrinks and is clamped into the embedding grooves and adheres to the inner walls of the embedding grooves. By arranging the heat shrinkable tubes outside the copper busbar body, the heat of the copper busbar can be absorbed, and the phase change medium in the heat shrinkable tubes conducts the heat of the copper busbar, avoiding the high temperature and melting of the integral large current-carrying copper busbar body.

[0010] Preferably, the anti-slip kit includes an inclined straight part and an arc end part; a V-shaped notch composed of two inclined straight parts and an arc end part is formed on the inner wall of the wire passing port. The connection part between the inclined straight part and the inner wall of the wire passing port is an arc chamfer structure. After the wiring is inserted into the wire passing port and moves towards the V-shaped notch, when the wiring slides along the inner wall of the wire passing port, it can smoothly extend from the two inclined straight parts through the arc chamfer and finally be clamped into the arc end part. Compared with a sharp corner, the arc chamfer structure is not easy to damage the copper wire in the wiring.

[0011] Preferably, the spliced wiring is inserted into the wire passing port and slides along the inclined straight part and is clamped into the arc end part. There are three groups of V-shaped notches in each wire passing port, and the included angle between adjacent V-shaped notches is 60 degrees. The depth of the V-shaped notch is less than the thickness of the wiring. After tightening the bolt, a lateral extrusion force will be generated on the wiring, locking the wiring firmly in the V-shaped notch. When the wiring is clamped into different V-shaped notches, the wiring can be pulled in different directions. Compared with a single V-shaped notch, the fixing point of the wiring and the pulling direction are not likely to have a large corner, reducing the possibility of wiring breakage.

[0012] Preferably, the anti-slip kit includes a through port, a U-shaped bayonet and an insulating rubber pad; a Y-shaped notch composed of a through port and two U-shaped bayonets is formed on the inner wall of the wire passing port. The connection part between the side wall of the through port and the inner wall of the wire passing port and the connection part between the side wall of the through port and the side wall of the U-shaped bayonet are both arc chamfer structures. The insulating rubber pad is fixedly connected between the two U-shaped bayonets. After the wiring is inserted into the wire passing port and moves towards the through port, when the wiring slides along the inner wall of the wire passing port, it can smoothly extend from the through port through the arc chamfer and finally be clamped into any one of the U-shaped bayonets. Compared with a sharp corner, the arc chamfer structure is not easy to damage the copper wire in the wiring.

[0013] Preferably, the side of the insulating rubber pad facing the center of the wire passing opening is in an arc-shaped convex shape. After butt-joint, the connected wire passes through the wire passing opening and slides and snaps into the U-shaped bayonet along the gap between the insulating rubber pad and the side wall of the through opening. The included angle between the two U-shaped bayonets is 120 degrees. The arc-shaped convex part of the insulating rubber pad extends into the wire passing opening. After the bolt is screwed in, it will squeeze the insulating rubber pad, causing it to deform towards the U-shaped bayonet side until the wire is tightly pressed in the U-shaped bayonet. When the wire is snapped into different U-shaped bayonets, the wire can be pulled in different directions. Compared with a single U-shaped bayonet, the fixing point of the wire and the pulling direction are not likely to have a large turning angle, reducing the possibility of wire breakage.

[0014] Advantages of the present utility model:

[0015] 1. By improving the design of the orifice on the original copper bar pin, the anti-slip kit can be used to fix the inserted wire. Compared with the original pin structure, to a certain extent, it can prevent the wire from sliding in the wire passing opening during installation or after the bolt loosens, affecting the use safety.

[0016] 2. Using the design of the embedding groove, when the heat shrinkable tube is coated, the insulating layer of the heat shrinkable tube will be heat-shrunk and snap into the embedding groove. Further, the upper and lower insulating layers will also stick together. Compared with the original flat surface coating structure, the coating is more firm.

[0017] 3. Using the design of the V-shaped notch and the U-shaped bayonet, the fixing angle of the wire can be adjusted as needed when the wire is inserted, so that when the wire is pulled, a large torsion angle between the wire and its own fixing point can be avoided, preventing the wire from breaking. Description of the drawings

[0018] Figure 1 Shown is the first three-dimensional structure schematic diagram of the copper bar connecting piece with an integrated structure of the present utility model;

[0019] Figure 2 Shown is the second three-dimensional structure schematic diagram of the copper bar connecting piece with an integrated structure of the present utility model;

[0020] Figure 3 Shown is the partial enlarged three-dimensional structure schematic diagram of the copper bar main body of the copper bar connecting piece with an integrated structure of the present utility model;

[0021] Figure 4 Shown is the partial enlarged three-dimensional structure schematic diagram of the heat shrinkable tube of the copper bar connecting piece with an integrated structure of the present utility model;

[0022] Figure 5 Shown is the first three-dimensional structure schematic diagram of the anti-slip kit of the copper bar connecting piece with an integrated structure of the present utility model;

[0023] Figure 6Figure 1 is a schematic plan view of the first embodiment of the anti-slip kit for the copper busbar connecting piece with an integrated structure of the present utility model;

[0024] Figure 7 Figure 2 is a schematic perspective view of the second embodiment of the anti-slip kit for the copper busbar connecting piece with an integrated structure of the present utility model;

[0025] Figure 8 Figure 3 is a schematic plan view of the second embodiment of the anti-slip kit for the copper busbar connecting piece with an integrated structure of the present utility model.

[0026] Description of reference numerals: 1. Copper busbar main body; 2. Front row of pins; 3. Rear row of pins; 4. Wire passing hole; 6. Angle plate; 7. Anchoring sleeve; 8. Embedded groove; 9. Heat shrinkable tube; 501. Oblique straight part; 502. Arc end part; 503. Through hole; 504. U-shaped bayonet; 505. Insulating rubber pad. Detailed implementation manners

[0027] The present utility model will be further described below with reference to the drawings and embodiments.

[0028] Please refer to Figures 1 - 8 , the present utility model provides a copper busbar connecting piece with an integrated structure, including a copper busbar main body 1, a front row of pins 2 and a rear row of pins 3 integrally formed at the front and rear ends of the copper busbar main body 1 respectively, a wire passing hole 4, and an anti-slip kit; circular wire passing holes 4 with internal threads are provided on both the front row of pins 2 and the rear row of pins 3, and an anti-slip kit is arranged in the wire passing hole 4. The wiring is passed through the wire passing hole 4 and clamped into the anti-slip kit, and a bolt is screwed into the wire passing hole 4 to press and fix the wiring. After the user fixes the copper busbar main body 1 on the installation platform, the connected cables are sequentially passed through the corresponding wire passing holes 4 on the front row of pins 2 or the rear row of pins 3 and clamped into the anti-slip kit, and then the bolt is screwed into the wire passing hole 4. The side wall of the bolt presses the wiring part passing through the wire passing hole 4 in the anti-slip kit. At the same time, the top cap of the bolt also presses the wiring exposed outside the wire passing hole 4 on the surface of the front row of pins 2 or the rear row of pins 3.

[0029] Please refer to Figures 1 - 4 , two angle plates 6 are integrally formed symmetrically on the left and right at the rear end of the copper busbar main body 1. The angle between the angle plates 6 and the copper busbar main body 1 is 90 degrees. An anchoring sleeve 7 is heat-melted and connected to the angle plates 6, and a screw hole penetrating through the anchoring sleeve 7 is provided on the angle plates 6. When the copper busbar main body 1 is installed, the angle plates 6 are aligned with the installation platform, and the bolt is passed through the angle plates 6 and the anchoring sleeve 7 and screwed into the installation platform for fixation. Two embedded grooves 8 are symmetrically arranged on the left and right on the surface of the copper busbar main body 1. The upper and lower surfaces of the copper busbar main body 1 are covered with a heat shrinkable tube 9. The insulating layer of the heat shrinkable tube 9 shrinks and is clamped into the embedded grooves 8 and adheres to the inner wall of the embedded grooves 8. The heat shrinkable tube 9 is arranged outside the copper busbar main body 1 to absorb the heat of the copper busbar. The phase change medium in the heat shrinkable tube 9 conducts the heat of the copper busbar to avoid melting due to high temperature of the integrated large current-carrying copper busbar main body 1.

[0030] Embodiment 1: Please refer to Figures 5 - 6 , in this embodiment, the anti-slip kit includes an inclined straight portion 501 and an arc end portion 502; a V-shaped notch formed by two inclined straight portions 501 and an arc end portion 502 is provided on the inner wall of the wire threading port 4. The joint between the inclined straight portion 501 and the inner wall of the wire threading port 4 is an arc chamfer structure. After the wiring penetrates into the wire threading port 4 and moves towards the V-shaped notch, when the wiring slides along the inner wall of the wire threading port 4, it can smoothly extend from the two inclined straight portions 501 through the arc chamfer and finally be clamped into the arc end portion 502. Compared with a sharp corner, the arc chamfer structure is not easy to damage the copper wire in the wiring. After splicing, the wiring penetrates into the wire threading port 4 and slides along the inclined straight portion 501 and is clamped into the arc end portion 502. There are three groups of V-shaped notches in each wire threading port 4, and the included angle between adjacent V-shaped notches is 60 degrees. The depth of the V-shaped notch is less than the thickness of the wiring. After tightening the bolt, a lateral extrusion force will be generated on the wiring, locking the wiring firmly in the V-shaped notch. When the wiring is clamped into different V-shaped notches, the wiring can be pulled in different directions. Compared with a single V-shaped notch, the fixing point of the wiring and the pulling direction are not likely to have a large corner, reducing the possibility of wiring breakage.

[0031] Embodiment 2: Please refer to Figures 7 - 8 , in this embodiment, the anti-slip kit includes a through port 503, a U-shaped bayonet 504, and an insulating gasket 505; a Y-shaped notch formed by the through port 503 and two U-shaped bayonets 504 is provided on the inner wall of the wire threading port 4. The joint between the side wall of the through port 503 and the inner wall of the wire threading port 4 and the joint between the side wall of the through port 503 and the side wall of the U-shaped bayonet 504 are both arc chamfer structures. The insulating gasket 505 is fixedly connected between the two U-shaped bayonets 504. After the wiring penetrates into the wire threading port 4 and moves towards the through port 503, when the wiring slides along the inner wall of the wire threading port 4, it can smoothly extend from the through port 503 through the arc chamfer and finally be clamped into any one of the U-shaped bayonets 504. Compared with a sharp corner, the arc chamfer structure is not easy to damage the copper wire in the wiring. One side of the insulating gasket 505 facing the center of the wire threading port 4 is arc-shaped and convex. After splicing, the wiring penetrates into the wire threading port 4 and slides along the gap between the insulating gasket 505 and the side wall of the through port 503 and is clamped into the U-shaped bayonet 504. The included angle between the two U-shaped bayonets 504 is 120 degrees. The arc-shaped convex portion of the insulating gasket 505 extends into the wire threading port 4. After the bolt is screwed in, it will squeeze the insulating gasket 505, causing it to deform towards the U-shaped bayonet 504 until the wiring is pressed tightly in the U-shaped bayonet 504. When the wiring is clamped into different U-shaped bayonets 504, the wiring can be pulled in different directions. Compared with a single U-shaped bayonet 504, the fixing point of the wiring and the pulling direction are not likely to have a large corner, reducing the possibility of wiring breakage.

[0032] Through the above steps, by improving the design of the orifice on the original copper busbar pin, the anti-slip kit therein can be used to fix the inserted wiring. Compared with the original pin structure, it can, to a certain extent, prevent the wiring from sliding in the wire passing port 4 during installation or after the bolt becomes loose, thus affecting the use safety, so as to solve the problem that in the existing copper busbar with the wire passing and fixing method, the wiring is prone to slide in the pin orifice, affecting the power connection performance and use safety.

Claims

1. A copper busbar connecting piece of an integrated structure, comprising a copper busbar body (1); characterized in that: The invention also comprises front row needles (2) and rear row needles (3), a threading port (4), and an anti-slip kit, which are respectively integrally formed at the front and rear ends of the copper busbar body (1); the front row needles (2) and the rear row needles (3) are both provided with a circular threading port (4) with an internal thread, and an anti-slip kit is arranged in the threading port (4); the wiring is inserted through the threading port (4) and inserted into the anti-slip kit; the bolt is screwed into the threading port (4) and the wiring is pressed and fixed.

2. The integrated copper busbar connector according to claim 1, characterized in that: The rear end of the copper busbar body (1) is symmetrically formed with two angle plates (6) in an integral manner, and a ninety-degree angle is formed between the angle plates (6) and the copper busbar body (1). An anchor sleeve (7) is hot-melt-connected to the angle plates (6), and a screw hole penetrating into the anchor sleeve (7) is provided on the angle plates (6).

3. The integrated copper busbar connector according to claim 1, characterized in that: Two embedding grooves (8) are symmetrically provided on the surface of the copper busbar body (1). The upper and lower surfaces of the copper busbar body (1) are covered with heat shrink tubes (9). The insulating layer of the heat shrink tubes (9) shrinks and fits into the embedding grooves (8) and adheres to the inner wall of the embedding grooves (8).

4. The integrated copper busbar connector according to claim 1, characterized in that: The anti-slip kit comprises an oblique straight portion (501) and an arc end portion (502); a V-shaped notch formed by two oblique straight portions (501) and an arc end portion (502) is provided on the inner wall of the threading opening (4); and the junction between the oblique straight portion (501) and the inner wall of the threading opening (4) is an arc-shaped chamfered structure.

5. The integrated copper busbar connector according to claim 4, characterized in that: The connected wire is inserted into the threading opening (4) and slides along the oblique straight portion (501) to snap into the arc end portion (502). Three groups of V-shaped notches are provided in each threading opening (4), and the angle between adjacent V-shaped notches is 60 degrees.

6. The integrated copper busbar connector according to claim 1, characterized in that: The anti-slip kit comprises a through opening (503), a U-shaped bayonet (504) and an insulating rubber pad (505); a Y-shaped slot formed by the through opening (503) and two U-shaped bayonet (504) is provided on the inner wall of the threading opening (4); the connection between the side wall of the through opening (503) and the inner wall of the threading opening (4) and the connection between the side wall of the through opening (503) and the side wall of the U-shaped bayonet (504) are both arc chamfered structures; and the insulating rubber pad (505) is fixedly connected between the two U-shaped bayonet (504).

7. The integrated copper busbar connector according to claim 6, characterized in that: One side of the insulating rubber pad (505) facing the center of the threading port (4) is in an arc-shaped protrusion. The connected wire is inserted into the threading port (4) and slides along the gap between the insulating rubber pad (505) and the side wall of the through port (503) to be inserted into the U-shaped bayonet (504). The included angle between the two U-shaped bayonet (504) is 120 degrees.

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