Switch cabinet top extension connecting device

Abstract

The utility model discloses a switch cabinet top expansion connecting device which at least comprises but not limited to a conductor assembly, a switching assembly and a central conductor. The conductor assembly and the top position of the switch cabinet are connected into a whole, one end of the switching assembly is connected with the conductor assembly, and the other end is connected with the central conductor; one end of the switching assembly is of a flat structure, and the other end of the switching assembly is of a columnar structure. The flat structure is provided with a plane, the switching assembly is in contact with the conductor assembly through the plane, the columnar structure is provided with a plurality of ring grooves, the number of the ring grooves is multiple in the length direction of the columnar structure, and contact fingers are arranged in at least part of the ring grooves; the switching assembly is in contact with the central conductor through the contact finger; according to the scheme, connection assembly of different current levels is expanded at the top of the switch cabinet, the assembly size of the large-current switch cabinet is reduced, assembly accessories, especially the assembly size and accessories of 4000 A, are reduced, and thus the product cost is reduced.

Description

Technical Field

[0001] The utility model relates to the field of electrical connection, in particular to a switch cabinet top extension connection device. Background Art

[0002] A switch cabinet is an electrical device. The external line of the switch cabinet first enters the main control switch inside the cabinet, and then enters the sub-control switch. Each branch is set according to its needs. Such as instruments, automatic control, motor magnetic switches, various AC contactors, etc. Some also have high-voltage and low-voltage room switch cabinets, with high-voltage busbars, such as power plants, etc. Some also have low-frequency load shedding to protect the main equipment.

[0003] The top of the existing switch cabinet is usually only equipped with a fixed output using a bearing or terminal, which cannot achieve assembly output for different current levels. At the same time, the bearing or terminal contact output is used. Due to the need to meet the internal temperature rise requirements, its volume is usually relatively large, wasting space and materials. Utility Model Content

[0004] The purpose of the utility model is to provide a switch cabinet top extension connection device to address the above-mentioned deficiencies, thereby solving the problem that the prior art uses bearings or terminals for fixed output and cannot achieve relatively small-volume assembly output under high current.

[0005] The utility model is realized by the following scheme:

[0006] A switch cabinet top extension connection device includes at least but not limited to a conductor assembly, an adapter assembly and a center conductor; the conductor assembly is connected to the top position of the switch cabinet as a whole, one end of the adapter assembly is connected to the conductor assembly, and the other end is connected to the center conductor; one end of the adapter assembly is a flat structure, and the other end is a columnar structure; a plane is provided on the flat structure, and the adapter assembly and the conductor assembly are in contact through the plane, and a plurality of annular grooves are provided on the columnar structure, and the annular grooves are arranged in a plurality along the length direction of the columnar structure, and contact fingers are provided in at least some of the annular grooves; the adapter assembly is in contact with the center conductor through the contact fingers.

[0007] Based on the structure of the above-mentioned switch cabinet top extension connection device, the conductor assembly includes a connecting conductor and an insulating sleeve, the insulating sleeve is sleeved on the outside of the connecting conductor, and the end face of the connecting conductor is provided with a mating surface for connecting to the adapter assembly.

[0008] Based on the structure of the above-mentioned switch cabinet top extension connection device, the adapter assembly includes a contact ring and a locking bolt; the contact ring includes a first end and a second end, the first end is a flat structure as a whole, and the upper and lower end surfaces of the flat structure are planar structures; a connecting hole penetrating the center body is provided on the center body; the locking bolt passes through the connecting hole and is connected to the mating surface.

[0009] Based on the structure of the above-mentioned switch cabinet top extension connection device, the second end is a columnar structure, the annular groove is arranged along the axial direction of the second end, and the shape and size of the annular groove are adapted to the shape and size of the contact finger; the contact finger is a spring-type contact finger and a strap-type contact finger.

[0010] Based on the structure of the switch cabinet top extension connection device, when the contact finger is a spring-type contact finger, the annular groove is an arc-shaped installation groove matched with the size of the spring-type contact finger, and a plurality of arc-shaped installation grooves are arranged along the axial direction of the second end.

[0011] Based on the structure of the switch cabinet top extension connection device, when the contact finger is a band-type contact finger, the annular groove is a rectangular installation groove adapted to the size of the band-type contact finger, and a plurality of rectangular installation grooves are arranged along the axial direction of the second end.

[0012] Based on the structure of the switch cabinet top extension connection device described above, a flat washer, a spring washer and a nut are further provided between the contact surface of the locking bolt and the central body.

[0013] Based on the structure of the above-mentioned switch cabinet top extension connection device, the contact ring is radially provided with a limiting convex ring.

[0014] Based on the structure of the above-mentioned switch cabinet top extension connection device, a limiting step is provided at the position of the second end near the limiting convex ring; a guide chamfer is provided at the contact portion between the inner hole of the central conductor and the limiting step; the guide chamfer is adapted to the inclination angle of the limiting step.

[0015] Based on the structure of the switch cabinet top extension connection device described above, the end of the second end away from the annular groove is provided with a chamfer.

[0016] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0017] 1. In this solution, the conductor assembly is connected to the adapter assembly through a planar structure, which can ensure an effective contact area on the one hand, and make the connection between the two closer on the other hand. When it is necessary to assemble lines of different current levels, by setting the size of the contact area, the current range covered by this solution during use is wider.

[0018] 2. In this solution, the adapter assembly contacts the center conductor through the contact finger, which can achieve quick plug-in and pull-out assembly, making this solution faster and easier to use.

[0019] 3. In this solution, the adapter assembly contacts the center conductor through the contact fingers. When it is necessary to assemble circuits of different current levels, the current size can be adapted and adjusted by setting different numbers or types of contact fingers, so that the current range covered by this solution is wider when used.

[0020] 4. In this solution, the transfer component contacts the center conductor through the contact finger, which can effectively improve the current carrying capacity, reduce the product size, and improve material utilization.

[0021] 5. In this solution, the conductor assembly and the adapter assembly are provided with multiple limiting convex rings, limiting steps, and chamfers, which can reduce the difficulty of assembly, effectively ensure the assembly accuracy, and improve the operation stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 This is a schematic diagram of the structure of the utility model when an arc-shaped installation groove is used;

[0024] Figure 3 This is a schematic diagram of the structure of the spring-type contact finger in the utility model;

[0025] Figure 4 This is a schematic diagram of the structure of the utility model when a rectangular installation groove is used;

[0026] Figure 5 This is a schematic diagram of the structure of the strap-type contact finger in the utility model;

[0027] Figure 6 It is a schematic diagram of the structure of the conductor assembly in the utility model;

[0028] Figure 7 It is a structural schematic diagram of the central conductor in the utility model;

[0029] Description of the drawings: 1. Conductor assembly; 2. Adapter assembly; 3. Center conductor; 4. Ring groove; 5. Contact finger; 6. Flat washer; 7. Spring washer; 8. Nut; 11. Connecting conductor; 12. Insulating sleeve; 13. Mating surface; 21. Contact ring; 22. Locking bolt; 23. Limiting convex ring; 24. Limiting step; 25. Chamfer; 31. Guide chamfer; 211. First end; 212. Second end; 213. Flat groove; 214. Center body; 215. Connecting hole; 41. Arc-shaped mounting groove; 42. Rectangular mounting groove; 43. Spring-type contact finger; 44. Band-type contact finger. DETAILED DESCRIPTION

[0030] All features disclosed in this specification, or steps in all methods or processes disclosed, except mutually exclusive features and / or steps, can be combined in any manner.

[0031] Any feature disclosed in this specification (including any additional claims and abstract), unless otherwise stated, may be replaced by other equivalent or alternative features having similar purposes. That is, unless otherwise stated, each feature is only an example of a series of equivalent or similar features.

[0032] In the description of the present invention, it should be understood that the terms "up", "down", "left", "right", etc., indicating directions or positional relationships 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.

[0033] In addition, the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first", "second", etc. may explicitly or implicitly include one or more of the features.

[0034] Example 1

[0035] like Figure 1 to Figure 7 As shown, the utility model provides a technical solution:

[0036] A switch cabinet top extension connection device, which at least includes but is not limited to a conductor assembly 1, an adapter assembly 2 and a center conductor 3; the conductor assembly 1 is connected to the top position of the switch cabinet as a whole, one end of the adapter assembly 2 is connected to the conductor assembly 1, and the other end is connected to the center conductor 3; one end of the adapter assembly 2 is a flat structure, and the other end is a columnar structure; a plane is provided on the flat structure, and the adapter assembly 2 is in contact with the conductor assembly 1 through the plane, and a plurality of annular grooves 4 are provided on the columnar structure, and the annular grooves 4 are arranged in plurality along the length direction of the columnar structure, and contact fingers 5 are provided in at least some of the annular grooves 4; the adapter assembly 2 is in contact with the center conductor 3 through the contact fingers 5.

[0037] Based on the above structure, in this solution, the conductor component 1 is connected to the adapter component 2 through a planar structure, which can ensure an effective contact area on the one hand, and make the connection between the two closer on the other hand; in this solution, the adapter component 2 contacts the center conductor 3 through the contact finger 5, and can achieve quick plugging and unplugging while ensuring the contact area. When it is necessary to assemble lines of different current levels, different numbers of contact fingers 5 are set to adapt the current size, making this solution more flexible when used.

[0038] As an example, the conductor assembly 1 may include a connecting conductor 11 and an insulating sleeve 12 . The insulating sleeve 12 is sleeved on the outside of the connecting conductor 11 . A mating surface 13 for connecting to the adapter assembly 2 is provided at the center of the connecting conductor 11 .

[0039] Based on the above structure, the insulating sleeve 12 is used for insulation, and the mating surface 13 is used to more stably fix the connecting conductor 11 and the adapter assembly 2.

[0040] As an example, the adapter assembly 2 may include a contact ring 21 and a locking bolt 22; the contact ring 21 includes a first end 211 and a second end 212, the first end 211 is a flat structure as a whole, and the first end 211 may include a flat groove 213 and a center body 214; the flat groove 213 is arranged on both sides of the center, and the upper and lower end surfaces of the center body 214 are planar structures; a connecting hole 215 is arranged on the center body 214 and passes through the center body 214; the locking bolt 22 passes through the connecting hole 215 and is connected to the mating surface.

[0041] Based on the above structure, a flat groove 213 is provided on the first end portion 211. On the one hand, it can be quickly positioned when assembled with the connecting conductor 11, and on the other hand, the contact surface between the connecting conductor 11 and the adapter component 2 can be embedded inward by a certain distance in the direction close to the adapter conductor to avoid direct exposure of the contact surface, which can improve the overall safety to a certain extent; the upper and lower plane structures of the central body 214 also allow the adapter component 2 to have more contact area with the connecting conductor 11 to ensure the safety of the connection.

[0042] As an example, the second end 212 is a columnar structure, the annular groove 4 is arranged along the length direction of the second end 212, and the shape and size of the annular groove 4 are adapted to the shape and size of the contact finger 5; the contact finger 5 can be a spring-type contact finger 43 and a strap-type contact finger 44;

[0043] When the contact finger 5 is a spring-type contact finger 43, the annular groove 4 is an arc-shaped installation groove 41 that matches the size of the spring-type contact finger 43, and the arc-shaped installation groove 41 is provided in four numbers along the length direction of the second end portion 212;

[0044] When the contact finger 5 is a watchband-type contact finger 44, the annular groove 4 is a rectangular installation groove 42 that matches the size of the watchband-type contact finger 44, and two rectangular installation grooves 42 are provided along the length direction of the second end portion 212;

[0045] Based on the above structure, since the contact effect of the spring-type contact finger 43 is not as good as that of the strap-type contact finger 44, more spring-type contact fingers 43 need to be set at the same length to achieve the contact of the corresponding strap-type contact finger 44. Of course, the strap-shaped contact finger 5 will also be larger than the spring-type contact finger 43. In this way, customers can choose different structures according to the gradient of the transfer current level required by the on-site switch cabinet; when the arc-shaped installation groove 41 structure and the spring-type contact finger 43 are used, the adjustment gradient is more, but the adjustment range value is smaller; when the rectangular installation groove 42 and the strap-type contact finger 44 are used, the adjustment gradient is less, but the adjustment range value is larger. Customers can choose flexibly.

[0046] As an example, a flat washer 6, a spring washer 7 and a nut 8 may be further provided between the contact surface between the locking bolt 22 and the central body 214; the flat washer 6, the spring washer 7 and the nut 8 can make the connection strength more stable.

[0047] As an example, a limiting convex ring 23 is provided at the center position of the contact ring 21 in the length direction;

[0048] Based on the above structure, the limiting protruding ring 23 is used to separate the contact ring 21 into the first end 211 and the second end 212 on the one hand, and is used to limit the extreme position when being clamped with the center conductor 3 on the other hand.

[0049] As an example, a limiting step 24 is provided at the position of the second end 212 close to the limiting protruding ring 23 ; a guide chamfer 31 is provided at the contact portion between the inner hole of the central conductor 3 and the limiting step 24 ; and the guide chamfer 31 is adapted to the inclination angle of the limiting step 24 .

[0050] Based on the above structure, when the center conductor 3 inserts the second end portion 212 , the limiting step 24 can be in close contact with the guide chamfer 31 , thereby ensuring the flatness of the connection.

[0051] As an example, the end of the second end portion 212 away from the limiting step 24 is provided with a chamfer 25 to prevent a sharp end from being formed on the second end portion 212 .

[0052] This solution realizes the expansion of connection assemblies of different current levels on the top of the switch cabinet, reduces the size of high-current switch cabinet components, and reduces assembly accessories, especially the size and accessories of 4000A components, thereby reducing product costs.

[0053] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A switch cabinet top extension connection device, characterized in that: At least including but not limited to a conductor assembly, a transfer assembly and a center conductor; the conductor assembly is connected to the top position of the switch cabinet as a whole, one end of the transfer assembly is connected to the conductor assembly, and the other end is connected to the center conductor; one end of the transfer assembly is a flat structure, and the other end is a columnar structure; a plane is provided on the flat structure, and the transfer assembly and the conductor assembly are in contact through the plane, and a plurality of annular grooves are provided on the columnar structure, and the annular grooves are arranged in a plurality along the length direction of the columnar structure, and contact fingers are provided in at least some of the annular grooves; the transfer assembly is in contact with the center conductor through the contact fingers.

2. A switch cabinet top extension connection device according to claim 1, characterized in that: The conductor assembly comprises a connecting conductor and an insulating sleeve, wherein the insulating sleeve is sleeved on the outside of the connecting conductor, and the end surface of the connecting conductor is provided with a matching surface for connecting with a switching assembly.

3. A switch cabinet top extension connection device as claimed in claim 2, characterized in that: The adapter assembly includes a contact ring and a locking bolt; the contact ring includes a first end and a second end, the first end is a flat structure as a whole, and the upper and lower end surfaces of the flat structure are planar structures; a connecting hole penetrating the center body is provided on the center body; the locking bolt passes through the connecting hole and is connected to the mating surface.

4. A switch cabinet top extension connection device as claimed in claim 3, characterized in that: The second end is a columnar structure, the annular groove is arranged along the axial direction of the second end, and the shape and size of the annular groove are adapted to the shape and size of the contact finger; the contact finger is a spring-type contact finger and a watchband-type contact finger.

5. A switch cabinet top extension connection device as claimed in claim 4, characterized in that: When the contact finger is a spring-type contact finger, the annular groove is an arc-shaped installation groove that matches the size of the spring-type contact finger, and a plurality of arc-shaped installation grooves are arranged along the axial direction of the second end.

6. A switch cabinet top extension connection device as claimed in claim 5, characterized in that: When the contact finger is a watchband-type contact finger, the annular groove is a rectangular installation groove matched with the size of the watchband-type contact finger, and a plurality of rectangular installation grooves are arranged along the axial direction of the second end.

7. A switch cabinet top extension connection device as claimed in claim 3, characterized in that: A flat washer, a spring washer and a nut are also arranged between the contact surface of the locking bolt and the central body.

8. A switch cabinet top extension connection device according to claim 5 or 6, characterized in that: The contact ring is radially provided with a limiting convex ring.

9. A switch cabinet top extension connection device according to claim 5 or 6, characterized in that: A limiting step is arranged at a position of the second end portion close to the limiting convex ring; a guide chamfer is arranged at a contact portion between the inner hole of the central conductor and the limiting step; and the guide chamfer is adapted to an inclination angle of the limiting step.

10. A switch cabinet top extension connection device according to claim 5 or 6, characterized in that: An end of the second end away from the annular groove is provided with a chamfer.

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