Large-current circuit board assembly

Abstract

The utility model discloses a heavy current circuit board assembly, which comprises a circuit board assembly and a conductive column arranged at the upper end of the circuit board assembly, the conductive column is riveted on the circuit board assembly to form electric connection, the circuit board assembly comprises a metal plate, an insulating plate and a load-bearing protection plate, the load-bearing protection plate covers the insulating plate and the metal plate, and the metal plate covers the insulating plate and the load-bearing protection plate. The conductive column penetrates through the bearing protection plate and the insulating plate and is riveted on the metal plate to form electric connection; according to the utility model, the structure is simple, the use is convenient and fast, the metal plate is adopted to replace a traditional PCB, the borne current is larger, the weight is heavier, the metal plate and the metal plate are welded on the metal plate in a conductive column mode, the connection between the metal plate and the metal plate is firmer and not easy to loosen, multiple insulation protection effects are provided, the short circuit condition can be avoided, and the service life is prolonged. And the structure is convenient to assemble, assembly can be completed by one person, the automatic assembly effect can be achieved, the assembly efficiency is improved, the production cost of enterprises is reduced, and the supply requirement of the market is met.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical control equipment, in particular to a large-current circuit board assembly. Background Art

[0002] In electrical control equipment in all walks of life, electrical control boxes are widely used, and are applicable to the field of low-voltage power distribution equipment involved in various large-scale production and manufacturing equipment, construction machinery devices, new energy-related equipment, high-speed rail and ships, housing construction, elevators, etc.

[0003] At present, components on the market usually use a PCB board to replace the wire connection method for electrical connection. By soldering the components on the PCB board, the connection effect between the two is achieved, reducing the generation of wires. However, when soldering components, one person cannot quickly and accurately solder the components, so assistance from others is required. One person holds the component, and the other person solders and fixes it at the bottom, resulting in an increase in the production cost of the enterprise and low efficiency, unable to meet the social demand for high-efficiency production.

[0004] Therefore, it is necessary to study a new technical solution to solve the above problems. Content of the Utility Model

[0005] In view of this, in view of the deficiencies of the existing technology, the main purpose of the utility model is to provide a large-current circuit board assembly.

[0006] To achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A large-current circuit board assembly includes a circuit board assembly and conductive posts installed on its upper end. The conductive posts are riveted to the circuit board assembly to form an electrical connection. The circuit board assembly includes a metal plate, an insulating plate, and a load-bearing protection plate. The load-bearing protection plate covers the insulating plate and the metal plate. The conductive posts pass through the load-bearing protection plate and the insulating plate and are riveted to the metal plate to form an electrical connection.

[0008] As a preference, mounting holes and insulating grooves are formed on the metal plate, and the insulating grooves are located on the upper end surface of the metal plate.

[0009] The metal plate is a purple copper plate, an alloy copper plate, or an alloy aluminum plate.

[0010] As a preference, insulating sheets and semi-cured sheets are provided on the lower end surface of the metal plate. The semi-cured sheets are disposed between the insulating sheets and the metal plate to bond the two to form an integral body.

[0011] As a preference, the insulating grooves and the mounting holes are machined and formed by a CNC milling machine.

[0012] As a preference, an insulating filling material for increasing the insulating distance between the two end faces in the groove is further filled in the insulating groove.

[0013] As a preference, an adhesive is provided at the connection between the insulating sheet and the inner end face of the load-bearing protection plate for firmly bonding the two together.

[0014] As a preference, an insulating encapsulation layer is further included. The insulating encapsulation layer is filled at the rear end of the insulating sheet and is located within the load-bearing protection plate to form an insulating protection layer for protecting the inner-end plate.

[0015] As a preference, both the insulating filling material and the insulating encapsulation layer are formed by flowing and filling with a liquid epoxy resin material, so that the liquid epoxy resin is evenly filled in the insulating groove or the load-bearing protection plate to form a layered structure to play an insulating protection role.

[0016] As a preference, the insulating sheet is made of a fiberglass board, a bakelite board, a silica gel board, a plastic board or an epoxy resin board.

[0017] As a preference, components are further included. The components include electronic components or electrical components. The components are mounted and fixed on the circuit board assembly, and a connecting wire is provided between the components and the conductive column for electrically connecting the two.

[0018] Compared with the prior art, the present utility model has obvious advantages and beneficial effects. Specifically, as can be seen from the above technical solutions:

[0019] The structure of the present utility model is simple and convenient to use. A metal plate is used to replace the traditional PCB board, so that the current carried is larger and the weight is heavier. And by using the method of conductive columns welded on the metal plate, the connection between the two is more firm and not easy to loosen. Moreover, it has multiple insulation protection effects, can avoid the occurrence of short circuits, and the structure is convenient to assemble. It can be assembled by a single person, and can also achieve the effect of automatic assembly, improve the assembly efficiency, reduce the production cost of the enterprise, and meet the supply demand of the market. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0021] Figure 1 It is a top view structural schematic diagram of the present utility model.

[0022] Figure 2It is the axial structure schematic diagram of the present utility model.

[0023] Figure 3 It is the partial sectional structure schematic diagram of the present utility model.

[0024] Figure 4 It is the schematic diagram of the metal plate laminated structure of the present utility model.

[0025] Figure 5 It is the schematic diagram of the actual assembly and use of the present utility model.

[0026] Among them, each reference numeral in the figure:

[0027] 10. Circuit board assembly; 11. Metal plate; 111. Mounting hole; 112. Insulation groove; 12. Insulating plate; 13. Load-bearing protection plate; 14. Insulating sheet; 15. Prepreg; 16. Insulating filling material; 17. Insulating encapsulation layer; 20. Conductive column; 30. Component; 40. Connecting wire. Specific embodiments

[0028] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application clearer, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0029] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0030] It should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present application.

[0031] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality of" means two or more unless otherwise specifically defined.

[0032] In order to make the purpose, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0033] Refer to the attached Figures 1-4 As shown: A large-current circuit board assembly includes a circuit board assembly 10 and a conductive post 20 installed on its upper end. By riveting the conductive post 20 to the circuit board assembly 10, the two are electrically connected. Among them, the circuit board assembly 10 includes a metal plate 11, an insulating plate 12, and a load-bearing protection plate 13. By covering the load-bearing protection plate 13 on the insulating plate 12 and the metal plate 11, the conductive post 20 passes through the load-bearing protection plate 13 and the insulating plate 12, and the lower end of the conductive post 20 can be riveted to the metal plate 11 to form an electrical connection.

[0034] Specifically, an installation hole 111 and an insulating groove 112 are provided on the metal plate 11, and the insulating groove 112 is located on the upper end surface of the metal plate 11; among them, both the insulating groove 112 and the installation hole 111 are processed by subtractive machining using a numerical control milling machine, so that the metal plate 11 is divided into a thick area and a thinned area, and the installation hole 111 is located in the thick area, so as to facilitate the placement of the conductive post 20 therein and rivet it for fixation.

[0035] Furthermore, the metal plate 11 used is a copper plate, an alloy copper plate or an alloy aluminum plate, which has the effect of carrying a large current, can withstand a larger working current and heavier components 30, and avoids the occurrence of plate deformation or breakage.

[0036] In this embodiment, an insulating sheet 14 and a prepreg 15 are also provided on the lower end surface of the metal plate 11. By arranging the prepreg 15 between the insulating sheet 14 and the metal plate 11, the two are bonded together, and thus pressed to form an integral plate.

[0037] Specifically, an insulating filling material 16 for increasing the insulation distance between the two side end faces in the groove is also filled in the insulating groove 112. By the insulating filling material 16, the creepage distance of the current between the two is increased, achieving a good safety protection effect and avoiding short-circuit situations.

[0038] In this embodiment, an adhesive is also provided at the connection between the insulating sheet 14 and the inner end face of the load-bearing protection plate 13. By the adhesive, the connection between the two can be firmly bonded together, avoiding loosening, and the adhesive includes glue and a sticky tape.

[0039] In this embodiment, there is also an insulating encapsulation layer 17. The insulating encapsulation layer 17 is filled at the rear end of the insulating sheet 14 and is located within the load-bearing protection plate 13, forming an insulating protection layer to protect the inner plate.

[0040] Specifically, the insulating filling material 16 and the insulating packaging layer 17 are both formed by flowing and filling liquid epoxy resin material, so that the liquid epoxy resin is evenly filled into the insulating groove 112 or the load-bearing protection plate 13 to form a layered structure, thereby playing an insulating protection role.

[0041] Furthermore, the insulating sheet 14 is made of glass fiber board, bakelite board, silicone board, plastic board or epoxy resin board.

[0042] Reference Figure 5 As shown: In actual use, components 30 are also included, wherein the components 30 include electronic components 30 or electrical components 30. The components 30 are installed and fixed on the circuit board assembly 10, and a connecting wire 40 is provided between the component 30 and the conductive column 20, wherein an internal thread is provided on the upper end surface of the conductive column 20, so that the connecting wire 40 can pass through the conductive screw and fix it on the conductive column 20, so that the connecting wire 40 enables the component 30 and the conductive column 20 to achieve electrical connection.

[0043] The above are only preferred embodiments of the present invention, and only specifically describe the technical principles of the present invention. These descriptions are only for the purpose of explaining the principles of the present invention, and cannot be interpreted as limiting the scope of protection of the present invention in any way. Based on the explanation here, any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention, and other specific implementation methods of the present invention that can be associated with by technicians in this field without creative labor, should be included in the scope of protection of the present invention.

Claims

1. A high current circuit board assembly, characterized in that: It includes a circuit board assembly and a conductive column installed on the upper end thereof, the conductive column is riveted on the circuit board assembly to form an electrical connection, the circuit board assembly includes a metal plate, an insulating plate and a load-bearing protection plate, the load-bearing protection plate is covered on the insulating plate and the metal plate, and the conductive column passes through the load-bearing protection plate and the insulating plate and is riveted on the metal plate to form an electrical connection.

2. The high current circuit board assembly according to claim 1, characterized in that: The metal plate is provided with a mounting hole and an insulating groove, and the insulating groove is located on the upper end surface of the metal plate. The metal plate is a copper plate, an alloy copper plate or an alloy aluminum plate.

3. The high current circuit board assembly according to claim 2, characterized in that: The lower end surface of the metal plate is provided with an insulating sheet and a prepreg sheet, and the prepreg sheet is arranged between the insulating sheet and the metal plate to bond the two to form a whole.

4. The high current circuit board assembly according to claim 2, characterized in that: The insulating groove and the mounting hole are processed and formed by a numerically controlled milling machine.

5. The high current circuit board assembly according to claim 3, characterized in that: The insulating groove is also filled with insulating filling material for increasing the insulation distance between the end surfaces on both sides of the groove.

6. The high current circuit board assembly according to claim 5, characterized in that: An adhesive is provided at the connection between the insulating sheet and the inner end surface of the load-bearing protection plate to firmly bond the two together.

7. The high current circuit board assembly according to claim 6, characterized in that: It also includes an insulating packaging layer, which is filled at the rear end of the insulating sheet and located inside the load-bearing protection plate to form an insulating protection layer for protecting the plate at the inner end.

8. The high current circuit board assembly according to claim 7, characterized in that: The insulating filling material and the insulating packaging layer are both formed by flowing and filling liquid epoxy resin material, so that the liquid epoxy resin is evenly filled in the insulating groove or the load-bearing protection plate to form a layered structure to play an insulating protection role.

9. The high current circuit board assembly according to claim 3, characterized in that: The insulating sheet is made of glass fiber board, bakelite board, silica gel board, plastic board or epoxy resin board.

10. The high current circuit board assembly according to claim 1, characterized in that: It also includes components, which include electronic components or electrical components. The components are installed and fixed on the circuit board assembly. Connecting wires are provided between the components and the conductive columns to electrically connect the two.

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