Large-current conductive column locking structure

Abstract

The utility model discloses a heavy-current conductive column locking structure, which comprises an equipment shell metal plate, a heavy-current conductive column, a limiting insulating plate, an external connecting copper bar, an internal connecting copper bar, an external locking nut and an internal locking nut, the equipment shell metal plate is provided with a non-circular through hole, and the limiting insulating plate comprises a fixed plate. The fixing plate is connected to the inner side of the equipment shell metal plate in an attached mode, the center of the fixing plate is provided with a protrusion, the cross section of the protrusion is the same as the non-circular through hole in the equipment shell metal plate in shape, and the protrusion is embedded in the non-circular through hole. According to the utility model, the large-current conductive column and the limiting insulating plate as well as the limiting insulating plate and the metal plate of the equipment shell are in embedded connection through the non-circular holes, so that the large-current conductive column or the limiting insulating plate is prevented from rotating when being subjected to torque; and the internal connecting copper bar is a flexible copper bar, so that the transmission of large external vibration and impact force is greatly reduced, and the problem that the connecting part is easy to loosen is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of large-current conductive column assembly structures, and in particular relates to a large-current conductive column locking structure. Background Art

[0002] High-current conductive columns are the input and output electrical interfaces of high-power electronic devices. They are particularly used in the fields of high-power power supplies and new energy electronic control. They can also be used in airborne power modules and products with high current and good insulation.

[0003] When large current conductive columns are subjected to large external vibrations and impact vibrations, the connections are prone to loosening, and they are subjected to large torque at the electrical interface, which makes them prone to rotation. Utility Model Content

[0004] In view of the problems existing in the prior art, the purpose of the present invention is to provide a high-current conductive column locking structure.

[0005] In order to solve the above problems, the present invention adopts the following technical solutions:

[0006] A locking structure for a large current conductive column, comprising a metal plate for an equipment housing, a large current conductive column, a limiting insulating plate, an external connecting copper bus, an internal connecting copper bus, an external locking nut and an internal locking nut, wherein a non-circular through-hole is provided on the metal plate for the equipment housing, the limiting insulating plate comprises a fixing plate, the fixing plate is fitted and connected to the inner side of the metal plate for the equipment housing, a protrusion with a cross-section identical to that of the non-circular through-hole on the metal plate for the equipment housing is provided at the center of the fixing plate and the protrusion is embedded in the non-circular through-hole, a through-hole penetrating the limiting insulating plate is provided on the protrusion of the limiting insulating plate, a non-circular countersunk hole with a cross-sectional area larger than that of the through-hole is provided at the top of the through-hole, and the large current conductive column passes through the through-hole connected to the limiting insulating plate. A step with the same cross-section as the non-circular countersunk hole is coaxially provided in the middle of the large-current conductive column, and the step is embedded in the non-circular countersunk hole. The internal connecting copper bus is a flexible copper bus. A connecting hole is provided at one end of the internal connecting copper bus and is sleeved on the end of the large-current conductive column located on the inner side of the metal plate of the equipment casing. The internal locking nut is threadedly connected to the end of the large-current conductive column located on the inner side of the metal plate of the equipment casing so that the internal connecting copper bus abuts the surface of the limiting insulating plate. A connecting hole is provided at one end of the external connecting copper bus and is sleeved on the end of the large-current conductive column located on the outer side of the metal plate of the equipment casing. The external locking nut is threadedly connected to the end of the large-current conductive column located on the outer side of the metal plate of the equipment casing so that the external connecting copper bus abuts the step surface.

[0007] Preferably, the fixing plate is connected to the inner side of the metal plate of the device housing by screws penetrating the fixing plate and the metal plate of the device housing and then fastened with nuts.

[0008] Preferably, both ends of the internal connecting copper bar are rigid sections, and a flexible section is connected between the two rigid sections.

[0009] Preferably, an anti-rotation groove having the same shape as the outer contour of one of the rigid segments is provided on the surface of the fixing plate, and the rigid segment is embedded in the anti-rotation groove.

[0010] Preferably, the cross-sectional shape of the non-circular through hole is square.

[0011] Preferably, the cross-sectional shape of the non-circular countersunk hole is a regular hexagon.

[0012] Preferably, the limiting insulating plate is made of a polyphenylene sulfide modified material with added glass fiber material.

[0013] Preferably, the internal connecting copper busbar is a stack of multiple 0.1 mm thick copper sheets, and both ends are compacted by diffusion welding to form a rigid section.

[0014] Beneficial effects of the utility model:

[0015] Compared with the prior art, the advantages of the present invention are:

[0016] The high-current conductive column and the limiting insulating plate, as well as the limiting insulating plate and the metal plate of the equipment casing, of the utility model are connected by embedding through non-circular holes, thereby preventing the high-current conductive column or the limiting insulating plate from rotating when subjected to torque; and the internal connecting copper busbar is a flexible copper busbar, which greatly reduces the transmission of large external vibrations and impact forces, and solves the problem of easy loosening of the connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the utility model located outside the device housing;

[0018] Figure 2 This is a schematic diagram of the structure of the utility model located inside the device housing;

[0019] Figure 3 for Figure 1 Cross-sectional view of section AA. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] See also Figure 1-Figure 3, the utility model provides a technical solution: a large current conductive column locking structure, including a device housing metal plate 1, a large current conductive column 2, a limiting insulating plate 3, an external connecting copper bus 4, an internal connecting copper bus 5, an external locking nut 6 and an internal locking nut 7, the device housing metal plate 1 is provided with a non-circular through hole 1-1, the limiting insulating plate 3 includes a fixing plate 3-1, the fixing plate 3-1 is fittedly connected to the inner side of the device housing metal plate 1, the center of the fixing plate 3-1 is provided with a protrusion 3-2 with the same cross-section as the non-circular through hole 1-1 on the device housing metal plate 1, and the protrusion 3-2 is embedded in the non-circular through hole 1-1, the protrusion 3-2 of the limiting insulating plate 3 is provided with a through hole 3-3 that passes through the limiting insulating plate 3, the top of the through hole 3-3 is provided with a non-circular countersunk hole 3-4 with a cross-sectional area larger than the cross-sectional area of the through hole 3-3, the large current conductive column The electric column 2 is connected through the through hole 3-3 of the limiting insulating plate 3. A step 2-1 with the same cross-section as the non-circular countersunk hole 3-4 is coaxially arranged in the middle of the large current conductive column 2, and the step 2-1 is embedded in the non-circular countersunk hole 3-4. The internal connecting copper bus 5 is a flexible copper bus. A connecting hole is provided at one end of the internal connecting copper bus 5 and is sleeved on the end of the large current conductive column 2 located on the inner side of the metal plate 1 of the equipment casing. The internal locking nut 7 is threadedly connected to the end of the large current conductive column 2 located on the inner side of the metal plate 1 of the equipment casing so that the internal connecting copper bus 5 abuts against the surface of the limiting insulating plate 3. A connecting hole is provided at one end of the external connecting copper bus 4 and is sleeved on the end of the large current conductive column 2 located on the outer side of the metal plate 1 of the equipment casing. The external locking nut 6 is threadedly connected to the end of the large current conductive column 2 located on the outer side of the metal plate 1 of the equipment casing so that the external connecting copper bus 4 abuts against the surface of the step 2-1.

[0022] The high-current conductive column 2 and the limiting insulating plate 3, as well as the limiting insulating plate 3 and the metal plate 1 of the equipment casing, of the utility model are connected by embedding through non-circular holes, thereby preventing the high-current conductive column 2 or the limiting insulating plate 3 from rotating when subjected to torque; and the internal connecting copper bus 5 is a flexible copper bus, which greatly reduces the transmission of large external vibrations and impact forces, and solves the problem of easy loosening of the connection.

[0023] Specifically, threads are processed at both ends of the high-current conductive column 2 , and the external locking nut 6 and the internal locking nut 7 are threadedly connected at both ends of the high-current conductive column 2 using anti-loosening nuts.

[0024] Furthermore, the fixing plate 3 - 1 is connected to the inner side of the equipment housing metal plate 1 by screws passing through the fixing plate 3 - 1 and the equipment housing metal plate 1 and then fastened with nuts, ensuring a firm connection between the limiting insulating plate 3 and the equipment housing metal plate 1 .

[0025] Furthermore, the two ends of the internal connecting copper bus 5 are rigid sections 5-1 and a flexible section 5-2 is connected between the two rigid sections 5-1. The internal connecting copper bus 5 can be connected to the high-current conductive column 2 by drilling a hole in the rigid section 5-1 at one end of the internal connecting copper bus 5.

[0026] Furthermore, an anti-rotation slot 3-5 having the same outer contour shape as one of the rigid sections 5-1 is provided on the surface of the fixing plate 3-1, and the rigid section 5-1 is embedded in the anti-rotation slot 3-5, thereby preventing the internal connecting copper bar 5 from rotating and causing the internal locking nut 7 to rotate and loosen.

[0027] Specifically, the cross-sectional shape of the non-circular through hole 1 - 1 is a square, and the cross-sectional shape of the non-circular countersunk hole 3 - 4 is a regular hexagon, thereby preventing the large current conductive column 2 and the limiting insulating plate 3 from rotating.

[0028] Furthermore, the limiting insulating plate 3 is made of a modified polyphenylene sulfide (PPS) material with added glass fiber material, is resistant to high and low temperatures, and is a good insulating material and heat-insulating material.

[0029] Specifically, the internal connecting copper bus 5 is a stack of multiple 0.1 mm thick copper sheets, with rigid sections 5-1 formed by diffusion welding at both ends, and a flexible section 5-2 in the middle with the properties of expansion and contraction and bending. The rigid sections 5-1 at both ends make the internal connecting copper bus 5 easy to connect.

[0030] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high current conductive column locking structure, characterized in that: The invention comprises a device housing metal plate (1), a large current conductive column (2), a limiting insulating plate (3), an external connecting copper bar (4), an internal connecting copper bar (5), an external locking nut (6) and an internal locking nut (7), wherein the device housing metal plate (1) is provided with a non-circular through hole (1-1), the limiting insulating plate (3) comprises a fixing plate (3-1), the fixing plate (3-1) is connected to the inner side of the device housing metal plate (1), and a cross-sectional The device shell metal plate (1) has a protrusion (3-2) with the same shape as the non-circular through hole (1-1) and the protrusion (3-2) is embedded in the non-circular through hole (1-1), the protrusion (3-2) of the limiting insulating plate (3) is provided with a through hole (3-3) that passes through the limiting insulating plate (3), the top of the through hole (3-3) is provided with a non-circular countersunk hole (3-4) with a cross-sectional area larger than the cross-sectional area of the through hole (3-3), the large current conductive column (2) is connected to the limiting insulating plate (3) through the protrusion (3-2) and the non-circular through hole (3-4) that passes through the limiting insulating plate (3), and the large current conductive column (2) is connected to the non-circular through hole (1-1) through the non-circular through hole (1-1). In the through hole (3-3) of the edge plate (3), a step (2-1) having a cross section identical to the shape of the non-circular countersunk hole (3-4) is coaxially arranged in the middle of the large current conductive column (2), and the step (2-1) is embedded in the non-circular countersunk hole (3-4). The internal connecting copper bar (5) is a flexible copper bar. One end of the internal connecting copper bar (5) is provided with a connection hole and is sleeved on one end of the large current conductive column (2) located on the inner side of the metal plate (1) of the device housing. The internal locking nut (7) is threadedly connected to the internal connecting copper bar (5). At one end of the high-current conductive column (2) located on the inner side of the metal plate (1) of the device housing, the internal connection copper bar (5) is abutted against the surface of the limiting insulating plate (3); one end of the external connection copper bar (4) is provided with a connection hole and is sleeved on the end of the high-current conductive column (2) located on the outer side of the metal plate (1) of the device housing; the external locking nut (6) is threadedly connected to the end of the high-current conductive column (2) located on the outer side of the metal plate (1) of the device housing, so that the external connection copper bar (4) abuts against the surface of the step (2-1).

2. A high current conductive column locking structure according to claim 1, characterized in that: The fixing plate (3-1) is connected to the inner side of the equipment housing metal plate (1) by screws penetrating the fixing plate (3-1) and the equipment housing metal plate (1) and then fastened with nuts.

3. A high current conductive column locking structure according to claim 1, characterized in that: Both ends of the internal connection copper bar (5) are rigid sections (5-1), and a flexible section (5-2) is connected between the two rigid sections (5-1).

4. A high current conductive column locking structure according to claim 3, characterized in that: An anti-rotation slot (3-5) having the same shape as the outer contour of one of the rigid sections (5-1) is provided on the surface of the fixed plate (3-1), and the rigid section (5-1) is embedded in the anti-rotation slot (3-5).

5. The high current conductive column locking structure according to claim 1, characterized in that: The cross-sectional shape of the non-circular through hole (1-1) is a square.

6. The high current conductive column locking structure according to claim 1, characterized in that: The cross-sectional shape of the non-circular countersunk hole (3-4) is a regular hexagon.

7. A high current conductive column locking structure according to claim 3, characterized in that: The internal connecting copper bar (5) is a stack of multiple 0.1 mm thick copper sheets, with both ends compacted by diffusion welding to form a rigid section (5-1).

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