Copper bar with connection structure

Abstract

The utility model discloses a copper bar of a connecting structure, which comprises a copper bar, two sides of one end of the copper bar are provided with extension portions inclining outwards, the extension portions are provided with pressing portions contracting towards the direction of the center line of the copper bar, the pressing portions are provided with protruding portions, the other end of the copper bar is provided with a pressure-bearing portion, and the pressure-bearing portion is provided with a pressure-bearing groove. The two sides of the pressure bearing part are provided with grooves allowing the protruding parts to enter. The pressure-bearing part is inserted between the pressing parts, and clamping force is applied to the pressure-bearing part through the pressing parts, so that the pressure-bearing part and the pressing parts are tightly connected, and the contact resistance is reduced; the arc-shaped protruding part is embedded into the groove, the contact area of the arc-shaped protruding part and the groove is further increased, the contact resistance is further reduced, and the product has the advantages of reducing the contact resistance value and being stable in connection.

Description

Technical Field

[0001] This utility model relates to the field of copper busbar technology, and in particular to a copper busbar with a connection structure. Background Technology

[0002] Copper busbars are fundamental components in power systems, connecting two conductors and providing a continuous and reliable current path. Adjacent copper busbars are secured with bolts and nuts to achieve a stable and reliable connection. The main problems with existing copper busbar connections are temperature rise and electrolytic corrosion, with temperature rise being a key factor affecting the load capacity and reliability of the copper busbar. The temperature rise of the copper busbar is caused by Joule heating during operation; therefore, the main factors determining the temperature rise are contact resistance and mechanical structure. In existing technologies, approximately 45% of bolted copper busbar connections exhibit heat generation in the overlap area, which can easily lead to safety accidents. Safety accidents caused by copper busbar overheating are among the major safety incidents in power systems. Therefore, the applicant has developed a beneficial design and found a solution to the above problems. The technical solution described below arose from this background. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the traditional copper busbar connection design and provide a product with reduced contact resistance and stable connection.

[0004] To solve the above problems, the present invention adopts the following technical solution.

[0005] A copper busbar with a connection structure includes a copper busbar, one end of which has outwardly inclined extensions on both sides, the extensions having clamping portions that contract toward the centerline of the copper busbar, the clamping portions having protrusions, and the other end of the copper busbar having a pressure-bearing portion, the pressure-bearing portion having grooves on both sides for the protrusions to enter.

[0006] Preferably, the inlet of the clamping part is provided with an inclined part.

[0007] Preferably, the pressure-bearing part is provided with a corresponding first through hole.

[0008] Preferably, the clamping part is provided with a second through hole corresponding to the first through hole, the second through hole is provided with a bolt that passes through the first through hole, and the end of the bolt is provided with a nut that is pressed tightly against the clamping part, so that the clamping part and the pressure-bearing part are closely fitted.

[0009] Preferably, a limiting portion is provided between the extensions.

[0010] Preferably, the protrusions and grooves are configured as arc shapes.

[0011] Beneficial effects:

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] This invention inserts a pressure-bearing part between two clamping parts, applying clamping force to the pressure-bearing part through the clamping part to ensure a tight connection and reduce contact resistance. The arc-shaped protrusion is embedded in the groove to further increase the contact area and reduce contact resistance. Bolts and nuts are then used to secure the pressure-bearing part and clamping part together, thus overcoming the technical problems mentioned in the prior art and giving the product the advantages of reduced contact resistance and stable connection. Attached Figure Description

[0014] Figure 1 This is a top view of a copper busbar with a connection structure according to the present invention;

[0015] Figure 2 This is an exploded view of a copper busbar with a connection structure according to this utility model;

[0016] The correspondence between the labels and component names in the attached figures is as follows:

[0017] Reference numerals: 1. Copper busbar; 2. Extension; 3. Clamping part; 4. Pressure bearing part; 5. Bolt; 6. Nut; 7. Limiting part; 31. Protrusion; 32. Inclined part; 33. Second through hole; 41. Groove; 42. First through hole. Detailed Implementation

[0018] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0019] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0020] In this embodiment of the utility model, "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0021] Reference example Figure 1 , Figure 2A copper busbar with a connecting structure includes a copper busbar 1. One end of the copper busbar 1 has outwardly inclined extensions 2 on both sides. The extensions 2 have clamping parts 3 that taper towards the centerline of the copper busbar 1. The clamping parts 3 have protrusions 31. The other end of the copper busbar 1 has a bearing part 4. The bearing part 4 has grooves 41 on both sides for the protrusions 31 to enter. The bearing part 4 is inserted between the clamping parts 3. The clamping parts 3 apply clamping force to the bearing part 4, making the two tightly connected and reducing the contact resistance. The arc-shaped protrusions 31 are embedded in the grooves 41, which further increases the contact area between the two and further reduces the contact resistance. The shape of the copper busbar 1 is not limited to that shown in the figure. It can also be U-shaped, L-shaped or curved at different angles.

[0022] It is worth mentioning that the inlet of the pressing part 3 is provided with an inclined part 32, and the pressure-bearing part 4 gradually opens the gap between the pressing parts 3 through the inclined part 32;

[0023] It is worth mentioning that the pressure-bearing part 4 is provided with a corresponding first through hole 42, through which the bolt 5 passes;

[0024] It is worth mentioning that the clamping part 3 is provided with a second through hole 33 corresponding to the first through hole 42. The second through hole 33 is provided with a bolt 5, which passes through the first through hole 42. The end of the bolt 5 is provided with a nut 6, which is pressed tightly against the clamping part 3, so that the clamping part 3 and the pressure bearing part 4 fit tightly together. The bolt 5 and the nut 6 connect the clamping part 3 and the pressure bearing part 4, and the protrusion 31 and the groove 41 tightly, thereby strengthening the tightness between the two.

[0025] It is worth mentioning that a limiting part 7 is provided between the extensions 2. The limiting part 7 restricts the distance that the pressure-bearing part 4 penetrates into the extension 2, so that the protrusion 31 can just enter the groove 41.

[0026] It is worth mentioning that the protrusion 31 and the groove 41 are set in an arc shape. The arc shape increases the contact area between the two. At the same time, when the pressure part 4 leaves the pressing part 3, the arc shape allows the pressing part 3 to expand to both sides, making it easier for the pressure part 4 to leave the pressing part 3.

[0027] The above design scheme enables the product to achieve the advantages of reduced contact resistance and stable connection.

[0028] The above description provides a more detailed explanation of the present invention in conjunction with specific embodiments. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present invention, and all such deductions or substitutions should be considered to fall within the scope of protection defined by the claims submitted by the present invention.

Claims

1. A copper bar of a connection structure comprising a copper bar (1), characterized by: One end of the copper bar (1) is provided with outwardly inclined extension (2), the extension (2) is provided with a compression part (3) which is contracted to the center line direction of the copper bar (1), the compression part (3) is provided with a protruding part (31), the other end of the copper bar (1) is provided with a pressure receiving part (4), the two sides of the pressure receiving part (4) are provided with grooves (41) for the protruding part (31) to enter.

2. The copper bar of the connection structure according to claim 1, characterized by: The entrance of the compression part (3) is provided with an inclined part (32).

3. The copper bar of the connection structure according to claim 2, characterized by: The pressure receiving part (4) is provided with a corresponding first through hole (42).

4. The copper bar of the connection structure according to claim 3, characterized by: The compression part (3) is provided with a second through hole (33) corresponding to the first through hole (42), the second through hole (33) is provided with a bolt (5) and passes through the first through hole (42), the end of the bolt (5) is provided with a nut (6) and is tightly pressed on the compression part (3), so that the compression part (3) and the pressure receiving part (4) are tightly attached.

5. The copper bar of the connection structure according to claim 2, characterized by: The extension (2) is provided with a limiting part (7).

6. The copper bar of the connection structure according to claim 3 or 4, characterized by: The protruding part (31) and the groove (41) are arranged in a circular arc shape.

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