Novel copper-aluminum wiring terminal

Abstract

The utility model discloses a novel copper-aluminum wiring terminal, which comprises a connecting column and a fixing column, the fixing column is provided with a blind hole, an inlet of the blind hole is provided with a cap body, the connecting column is provided with a guide column and penetrates through the cap body, the guide column is provided with a cylinder, the cylinder is provided with an elastic piece and abuts against the cap body, and the elastic piece is connected with the cap body. The cylinder abuts against the end face of the blind hole, and the connecting column abuts against the end face of the cap body. The connecting column is connected with the wire, the connecting column can rotate with the cylinder as the axis, the problem of breakage caused by excessive twisting of the wire is avoided, the spring enables the connecting column to be tightly attached to the cap body, conductivity of the connecting column and the fixing column is ensured, the inclined block is embedded into the exposed portion of the wire, friction force of the wire and the connecting column is increased, and the wire is prevented from being broken. The connection stability of the wire and the connection column is improved, and the product has the advantages of distortion prevention and stable connection.

Description

Technical Field

[0001] The utility model relates to the technical field of wiring terminals, in particular to a novel copper-aluminum wiring terminal. Background Art

[0002] The connection between power capacitor unit terminals and between terminals and busbars is made of copper stranded wires. The copper stranded wires are usually directly connected to the copper bar through copper-aluminum terminal blocks, or connected to the copper bar through aluminum terminals and copper-aluminum transition pieces.

[0003] The existing copper-aluminum terminal blocks are connected to wires by crimping. The copper-aluminum terminal blocks are connected to electrical equipment by fasteners such as screws and bolts. However, when the wire is twisted or twisted by external force, the central axis of the wire is offset. During the long-term torsion process, the exposed part of the wire and the fixed part of the copper-aluminum terminal blocks are subjected to external force for a long time, causing metal fatigue and breakage, resulting in poor contact and reduced current capacity. Therefore, the applicant has made a useful design and found a solution to the above problems. The technical solution to be introduced below is produced in this context. Summary of the invention

[0004] The purpose of the utility model is to overcome the shortcomings of the above-mentioned traditional copper-aluminum terminal block and provide a product with anti-twisting and stable connection.

[0005] To solve the above problems, the utility model adopts the following technical solutions.

[0006] A novel copper-aluminum terminal comprises a connecting column and a fixing column. The fixing column is provided with a blind hole. A cap body is provided at the entrance of the blind hole. The connecting column is provided with a guide column and passes through the cap body. The guide column is provided with a cylinder. The cylinder is provided with an elastic part and abuts against the cap body, so that the cylinder abuts against the end face of the blind hole and the connecting column abuts against the end face of the cap body.

[0007] Preferably, an outer wall of the fixing column is provided with an external thread groove, the fixing column is provided with a connecting plate, and the connecting plate is provided with a fixing hole.

[0008] Preferably, the cap body is provided with an internal thread groove, and is engaged with the external thread groove.

[0009] Preferably, the guide column is provided with a threaded hole, the connecting column is provided with a wire cavity, and the inner wall of the wire cavity is provided with a plurality of inclined blocks evenly distributed from top to bottom with a circle as the axis.

[0010] Preferably, the outer wall of the cylinder is provided with an annular inner groove, the inner groove is provided with a plurality of ball bearings and abuts the inner wall of the blind hole, the cylinder is provided with a first countersunk hole, the cylinder is provided with a through hole, the end face of the through hole is provided with a second countersunk hole, the cylinder is provided with a limiting column, and is sleeved on the guide column.

[0011] Preferably, the elastic member is arranged in the first countersunk hole, and the elastic member is configured as a spring.

[0012] Preferably, the through hole is provided with a screw and engages with the threaded hole, and the head of the screw is arranged in the second countersunk hole so that the head of the screw is flush with the surface of the cylinder.

[0013] Preferably, the material of the connecting column is set to aluminum, and the material of the fixing column is set to copper.

[0014] Beneficial effects:

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] (1) The utility model is connected to the conductor through the wire cavity. If a compression method is adopted, the outer wall of the connecting column is pressurized by the crimper, and the inclined block is embedded in the exposed part of the conductor, which not only increases the friction with the conductor, but also makes the connection between the conductor and the wire cavity tighter, so that the connection between the conductor and the connecting column is stable, so that the product has the advantage of stable connection.

[0017] (2) In the present invention, the connecting column can rotate with the cylinder as the axis, so as to avoid excessive twisting of the wire, which may cause the exposed part of the wire to break. The spring not only makes the cylinder have a damping effect when rotating, but also makes the connecting column close to the cap body, ensuring the conductivity of the connecting column and the fixed column, so that the product has the advantage of anti-twisting. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of a new copper-aluminum terminal block of the utility model;

[0019] Figure 2 This is a schematic diagram of the side cross-sectional structure of a new type of copper-aluminum terminal block of the utility model;

[0020] Figure 3 The utility model is a new type of copper-aluminum terminal explosion Figure 1 ;

[0021] Figure 4 The utility model is a new type of copper-aluminum terminal explosion Figure 2 ;

[0022] The corresponding relationship between the illustrations and component names in the figure is as follows:

[0023] Figure numerals: 1. connecting column; 2. fixing column; 3. cap body; 4. cylinder; 5. elastic member; 6. screw; 11. guide column; 12. threaded hole; 13. wire cavity; 14. inclined block; 21. blind hole; 22. external thread groove; 23. connecting plate; 24. fixing hole; 31. internal thread groove; 41. internal groove; 42. ball; 43. first countersunk hole; 44. through hole; 45. second countersunk hole; 46. limiting column. DETAILED DESCRIPTION

[0024] The technical solution of the utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "up", "down", "left" and "right" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0026] Reference example Figures 1 to 4 A novel copper-aluminum terminal comprises a connecting column 1 and a fixing column 2. The fixing column 2 is provided with a blind hole 21. A cap body 3 is provided at the entrance of the blind hole 21. The connecting column 1 is provided with a guide column 11 and passes through the cap body 3. The guide column 11 is provided with a cylinder 4. The cylinder 4 is provided with an elastic member 5 and abuts against the cap body 3, so that the cylinder 4 abuts against the end face of the blind hole 21 and the connecting column 1 abuts against the end face of the cap body 3.

[0027] It is worth mentioning that the outer wall of the fixing column 2 is provided with an external thread groove 22, the fixing column 2 is provided with a connecting plate 23, the connecting plate 23 is provided with a fixing hole 24, the external thread groove 22 is used in conjunction with the internal thread groove 31, and the fixing hole 24 is convenient for connection with electrical equipment;

[0028] It is worth mentioning that the cap body 3 is provided with an internal thread groove 31, and is engaged with the external thread groove 22. Through the internal thread groove 31, the cap body 3 and the fixing column 2 are convenient for disassembly or installation, and the assembly on the production line is convenient;

[0029] It is worth mentioning that the guide column 11 is provided with a threaded hole 12, the connecting column 1 is provided with a wire cavity 13, and the inner wall of the wire cavity 13 is evenly distributed with a plurality of inclined blocks 14 from top to bottom with the dot as the axis. The threaded hole 12 is used in conjunction with the screw 6. If a compression method is adopted, the outer wall of the connecting column 1 is pressurized by a crimper, and the inclined block 14 is embedded in the exposed part of the wire, so that the wire and the wire cavity 13 are more tightly connected;

[0030] It is worth mentioning that the outer wall of the cylinder 4 is provided with an annular inner groove 41, the inner groove 41 is provided with a plurality of balls 42, and abuts against the inner wall of the blind hole 21, the cylinder 4 is provided with a first countersunk hole 43, the cylinder 4 is provided with a through hole 44, the end face of the through hole 44 is provided with a second countersunk hole 45, the cylinder 4 is provided with a limiting column 46, and is sleeved on the guide column 11, the inner groove 41 allows the balls 42 to move therein, preventing the balls 42 from escaping from the inner groove 41, and the balls 42 reduce the resistance to the rotation of the cylinder 4, the first countersunk hole 43 increases the overall length of the elastic member 5 and the cap body 3, and limits the displacement of the elastic member 5, the through hole 44 is convenient for the screw 6 to pass through, the second countersunk hole 45 is used in conjunction with the screw 6, and the limiting column 46 limits the activity space of the cylinder 4;

[0031] It is worth mentioning that the elastic member 5 is arranged in the first countersunk hole 43, and the elastic member 5 is arranged as a spring. The spring can be a rectangular cross-section cylindrical 4 helical compression spring. Under the same space conditions, the rectangular cross-section cylindrical 4 helical compression spring has greater stiffness and absorbs more energy than the circular cross-section cylindrical 4 helical compression spring. The spring not only makes the cylinder 4 have a damping effect when rotating, but in the actual manufacturing process, due to the variation in the tolerance of the two parts matching each other, the spring is needed to compensate for the variation in the two tolerances, so that the connecting column 1 is close to the cap body 3, ensuring the conductivity of the connecting column 1 and the fixing column 2.

[0032] It is worth mentioning that the through hole 44 is provided with a screw 6 and is engaged with the threaded hole 12. The head of the screw 6 is arranged in the second countersunk hole 45 so that the head of the screw 6 is flush with the surface of the cylinder 4. The screw 6 facilitates the connection and fixation of the cylinder 4 and the guide column 11, which is convenient for assembly on the production line.

[0033] It is worth mentioning that the material of the connecting column 1 is set to aluminum, and the material of the fixing column 2 is set to copper.

[0034] The above design scheme can enable the product to achieve the advantages of anti-twisting and stable connection.

[0035] The above content is a further detailed description of the utility model in combination with specific implementation methods. It cannot be determined that the specific implementation of the utility model is limited to these descriptions. For ordinary technicians in the technical field to which the utility model belongs, without departing from the concept of the utility model, they can also make several simple deductions or substitutions, which should be regarded as belonging to the scope of protection determined by the claims submitted for the utility model.

Claims

1. A novel copper-aluminum terminal block, comprising a connecting column (1) and a fixing column (2), characterized in that: The fixing column (2) is provided with a blind hole (21), a cap body (3) is provided at the entrance of the blind hole (21), the connecting column (1) is provided with a guide column (11) and passes through the cap body (3), the guide column (11) is provided with a cylinder (4), the cylinder (4) is provided with an elastic member (5) and abuts against the cap body (3), so that the cylinder (4) abuts against the end face of the blind hole (21) and the connecting column (1) abuts against the end face of the cap body (3).

2. The new copper-aluminum terminal block according to claim 1 is characterized in that: The outer wall of the fixing column (2) is provided with an external thread groove (22), the fixing column (2) is provided with a connecting plate (23), and the connecting plate (23) is provided with a fixing hole (24).

3. The new copper-aluminum terminal according to claim 2 is characterized in that: The cap body (3) is provided with an internal thread groove (31) which engages with the external thread groove (22).

4. The novel copper-aluminum terminal block according to claim 1 is characterized in that: The guide column (11) is provided with a threaded hole (12), the connecting column (1) is provided with a wire cavity (13), and the inner wall of the wire cavity (13) is provided with a plurality of inclined blocks (14) evenly distributed from top to bottom with a round point as the axis.

5. The novel copper-aluminum terminal block according to claim 4 is characterized in that: The outer wall of the cylinder (4) is provided with an annular inner groove (41), the inner groove (41) is provided with a plurality of balls (42) and abuts against the inner wall of the blind hole (21), the cylinder (4) is provided with a first countersunk hole (43), the cylinder (4) is provided with a through hole (44), the end surface of the through hole (44) is provided with a second countersunk hole (45), and the cylinder (4) is provided with a limiting column (46) and is sleeved on the guide column (11).

6. The novel copper-aluminum terminal block according to claim 5 is characterized in that: The elastic member (5) is arranged in the first countersunk hole (43), and the elastic member (5) is configured as a spring.

7. The novel copper-aluminum terminal according to claim 5 is characterized in that: The through hole (44) is provided with a screw (6) and is engaged with the threaded hole (12). The head of the screw (6) is arranged in the second countersunk hole (45) so that the head of the screw (6) is flush with the surface of the cylinder (4).

8. The novel copper-aluminum terminal block according to claim 1 is characterized in that: The material of the connecting column (1) is set to be aluminum, and the material of the fixing column (2) is set to be copper.

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