Power distribution cabinet bus fixing device

Abstract

The utility model relates to the technical field of power distribution cabinets, in particular to a power distribution cabinet bus fixing device which comprises an insulating plate, a first clamping structure is arranged on the end face of one side of the insulating plate, and a second clamping structure is arranged on the end face of the other side of the insulating plate. The first clamping structure comprises two first plates, the two first plates are vertically arranged on the left side and the right side of the insulating plate respectively, first protrusions are arranged at the ends, away from the insulating plate, of the opposite sides of the two first plates, and the second clamping structure comprises two second plates which are horizontally arranged on the upper side and the lower side of the insulating plate respectively; the middle portions of the end faces of the two sides of the insulating plate are respectively provided with a cylinder perpendicular to the end faces, the bus is installed efficiently and conveniently, and the insulation reliability is high.

Description

Technical Field

[0001] This utility model relates to the field of power distribution cabinet technology, specifically to a power distribution cabinet busbar fixing device. Background Technology

[0002] In existing distribution cabinet busbar installation processes, both the busbar and the mounting plate have mounting holes. The busbar and the mounting plate are mechanically connected by bolts and nuts, and electrical isolation is achieved by insulating sleeves and insulating gaskets. Specifically, insulating sleeves are used to prevent bolts from directly contacting the conductor when they penetrate the busbar, while insulating gaskets are installed on the bolt head and nut side to prevent the formation of a conductive path between the metal fasteners and the busbar.

[0003] However, this traditional installation method has the following technical drawbacks: because it requires installing insulating sleeves and gaskets one by one and tightening bolts and nuts in the small distribution cabinet, the installation steps are cumbersome and the manual operation is time-consuming, making it difficult to meet the efficiency requirements of rapid assembly of modern electrical cabinets; if the insulating gaskets do not completely cover the contact surface or the sleeves are not installed properly, it may cause partial discharge or even short circuit risks. Utility Model Content

[0004] To address the aforementioned technical shortcomings, this utility model provides a busbar fixing device for distribution cabinets, which is highly efficient and convenient for busbar installation and has high insulation reliability.

[0005] This utility model discloses a busbar fixing device for a power distribution cabinet, including an insulating plate. A first-order snap-fit ​​structure is provided on one end face of the insulating plate, and a second-order snap-fit ​​structure is provided on the other end face of the insulating plate. The first-order snap-fit ​​structure includes two first-order plates, which are vertically arranged on the left and right sides of the insulating plate, respectively. A first-order protrusion is provided on the opposite side of the two first-order plates away from the insulating plate. The second-order snap-fit ​​structure includes two second-order plates, which are horizontally arranged on the upper and lower sides of the insulating plate, respectively. A second-order protrusion is provided on the opposite side of the two second-order plates away from the insulating plate. A cylinder perpendicular to the end face is provided in the middle of both end faces of the insulating plate.

[0006] When installing the busbar onto the mounting plate using the aforementioned device, both the busbar and the mounting plate are provided with mounting holes. The diameter of the mounting holes should be equal to the diameter of the cylinder on the aforementioned device. The total width of the busbar and its heat-shrink tubing should be equal to the distance between the two No. 1 plates. The distance between the No. 1 protrusion and the insulating plate should be equal to the total thickness of the busbar and its heat-shrink tubing. The width of the mounting plate should be equal to the distance between the two No. 2 plates. The distance between the No. 2 protrusion and the insulating plate should be equal to the thickness of the mounting plate. During installation, align the mounting holes on the busbar with the cylinder, then pry open the No. 1 plate and snap the busbar between the two No. 1 plates, securing it with the No. 1 protrusion on the No. 1 plate. The No. 1 plate has good toughness and can undergo elastic deformation. Then align the cylinder with the mounting holes on the mounting plate, then pry open the No. 2 plate and snap the mounting plate between the two No. 2 plates, securing it with the No. 2 protrusion on the No. 2 plate. The No. 2 plate has good toughness and can undergo elastic deformation. The insulating plate is made of insulating material.

[0007] To facilitate the smooth insertion of the busbar and mounting plate, a first guide ramp is provided on the first protrusion to guide the smooth insertion of the busbar. Specifically, the first guide ramp is located inside the first protrusion and faces the insertion direction of the busbar. A second guide ramp is provided on the second protrusion to guide the smooth insertion of the mounting plate. Specifically, the second guide ramp is located inside the second protrusion and faces the insertion direction of the mounting plate.

[0008] The cylinder serves as a rigid positioning shaft. To ensure that the cylinder enters the mounting hole first when the busbar and mounting plate are inserted, the distance between the ends of plates 1 and 2 furthest from the insulation plate and the insulation plate is less than the length of the cylinder.

[0009] To make it easier for the cylinder to enter the mounting hole, the edge of the cylinder away from the insulating plate is rounded.

[0010] The busbar fixing device for a distribution cabinet obtained by this utility model has the following advantages: the busbar is clamped by two No. 1 plates with No. 1 protrusions, and the mounting plate is clamped by two No. 2 plates with No. 2 protrusions. The cylinders on both sides of the insulating plate are precisely aligned with the mounting holes of the busbar and the mounting plate. The cylinders act as force fulcrums, limiting the position and distributing the force, thus achieving effective fixing. The "insertion-clamping" action is achieved by utilizing the tough deformation of the No. 1 and No. 2 plates, eliminating the bolt tightening step and requiring no additional parts such as bolts and washers, resulting in efficient installation. The insulating plate directly isolates the busbar from the mounting plate, providing good insulation. Attached Figure Description

[0011] Figure 1 This is a perspective view of Embodiment 1 of the present utility model;

[0012] Figure 2 This is a front view of Embodiment 1 of the present utility model;

[0013] Figure 3This is a top view of Embodiment 1 of the present invention;

[0014] Figure 4 This is a right view of Embodiment 1 of the present invention;

[0015] Figure 5 A three-dimensional diagram of the busbar;

[0016] Figure 6 A 3D view of the mounting plate;

[0017] Figure 7 This is a schematic diagram illustrating the use of Embodiment 1 of this utility model;

[0018] Figure 8 This is Embodiment 1 of the present utility model. Figure 7 Enlarged view of section A. Detailed Implementation

[0019] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0020] Example 1:

[0021] like Figures 1 to 8 As shown, this utility model discloses a busbar fixing device for a power distribution cabinet, including an insulating plate 1. A first-order snap-fit ​​structure is provided on one end face of the insulating plate 1, and a second-order snap-fit ​​structure is provided on the other end face of the insulating plate 1. The first-order snap-fit ​​structure includes two first-order plates 2, which are vertically arranged on the left and right sides of the insulating plate 1, respectively. A first-order protrusion 3 is provided on the opposite side of the two first-order plates 2, away from the insulating plate 1. A first-order guide slope is provided on the first-order protrusion 3 to guide the smooth insertion of the busbar 7. The first-order guide slope is located inside the first-order protrusion 3 and faces the insertion direction of the busbar 7. The second-order snap-fit ​​structure... It includes two No. 2 plates 4, which are horizontally arranged on the upper and lower sides of the insulating plate 1 respectively. On the opposite side of the two No. 2 plates 4, the end away from the insulating plate 1 is provided with a No. 2 protrusion 6. The No. 2 protrusion 6 is provided with a No. 2 guide slope for guiding the smooth insertion of the mounting plate 8. The No. 2 guide slope is located inside the No. 2 protrusion 6 and faces the insertion direction of the mounting plate 8. A cylinder 5 perpendicular to the end face is provided in the middle of both end faces of the insulating plate 1. The distance between the end of the No. 1 plate 2 and the No. 2 plate 4 away from the insulating plate 1 and the insulating plate 1 is less than the length of the cylinder 5. The edge of the end of the cylinder 5 away from the insulating plate 1 is rounded.

[0022] When installing the busbar 7 onto the mounting plate 8 using the aforementioned device, both the busbar 7 and the mounting plate 8 are provided with mounting holes. The diameter of the mounting holes should be equal to the diameter of the cylinder 5 on the aforementioned device. The total width of the busbar 7 and its heat-shrink tubing should be equal to the distance between the two No. 1 plates 2. The distance between the No. 1 protrusion 3 and the insulating plate 1 should be equal to the total thickness of the busbar 7 and its heat-shrink tubing. The width of the mounting plate 8 should be equal to the distance between the two No. 2 plates 4. The distance between the No. 2 protrusion 6 and the insulating plate 1 should be equal to the width of the mounting plate 8. The thickness is such that, during installation, the mounting hole on the busbar 7 is first inserted into the cylinder 5, and then the busbar 7 is snapped between the two No. 1 plates 2 and fixed by the No. 1 protrusion 3 on the No. 1 plate 2. The No. 1 plate 2 has good toughness and can undergo elastic deformation. Then, the cylinder 5 is inserted into the mounting hole on the mounting plate 8, and then the mounting plate 8 is snapped between the two No. 2 plates 4 and fixed by the No. 2 protrusion 6 on the No. 2 plate 4. The No. 2 plate 4 has good toughness and can undergo elastic deformation. The insulating plate 1 is made of insulating material.

Claims

1. A busbar fixing device for an electrical switchgear cabinet, characterized in that: The device includes an insulating plate (1), with a No. 1 snap-fit ​​structure on one side end face and a No. 2 snap-fit ​​structure on the other side end face. The No. 1 snap-fit ​​structure includes two No. 1 plates (2), which are vertically arranged on the left and right sides of the insulating plate (1). A No. 1 protrusion (3) is provided on the opposite side of the two No. 1 plates (2) away from the insulating plate (1). The No. 2 snap-fit ​​structure includes two No. 2 plates (4), which are horizontally arranged on the upper and lower sides of the insulating plate (1). A No. 2 protrusion (6) is provided on the opposite side of the two No. 2 plates (4) away from the insulating plate (1). A cylinder (5) perpendicular to the end face is provided in the middle of both sides end face of the insulating plate (1).

2. The busbar fixing device for a distribution cabinet according to claim 1, characterized in that: A first guide slope is provided on the first protrusion (3), and a second guide slope is provided on the second protrusion (6).

3. A busbar fixing device for a distribution cabinet according to claim 1 or 2, characterized in that: The distance between the end of plate 1 (2) and plate 2 (4) away from the insulating plate (1) and the insulating plate (1) is less than the length of the cylinder (5).

4. A busbar fixing device for a distribution cabinet according to claim 1 or 2, characterized in that: The edge of the cylinder (5) away from the insulating plate (1) is rounded.

5. A busbar fixing device for a distribution cabinet according to claim 3, characterized in that: The edge of the cylinder (5) away from the insulating plate (1) is rounded.

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