CN209982824U

CN209982824U - Interconnecting and switching structure between PCBs

Info

Publication number: CN209982824U
Application number: CN201920482303.XU
Authority: CN
Inventors: 郭庭; 杨锡旺
Original assignee: Changzhou Suo Wei Electronic Technology Co Ltd
Current assignee: Changzhou Shiwei Electronics Co ltd
Priority date: 2019-04-10
Filing date: 2019-04-10
Publication date: 2020-01-21
Anticipated expiration: 2029-04-10

Abstract

The interconnecting and switching structure between PCBs comprises a plurality of PCBs, wherein a second circuit board is a main circuit board, and a first circuit board is a secondary circuit board. And the second circuit board is provided with a patch nut, the first circuit board is provided with a screw hole, a screw passes through the screw hole on the first circuit board by adopting a screw, and the corresponding patch nut on the second circuit board is fastened to install the first circuit board on the second circuit board.

Description

Interconnecting and switching structure between PCBs

Technical Field

The utility model belongs to the technical field of the circuit board equipment, in particular to interconnect switching structure between PCB board.

Background

In the power electronics field, for example, circuit board interconnect cooperation all can be used to power, industrial control, track traffic, fuel automobile, new energy automobile etc.. In the design of the circuit board, or due to the limitation of the topological structure design and the structural space of the circuit, or due to the type selection requirement of electronic devices, or due to circuit boards with special requirements, such as EMC and EMI circuit boards, the circuit board is generally divided into a main circuit board, an auxiliary circuit board, a transformer adapter circuit board, an inductance adapter circuit board, a control board, a power board and the like, so that the connection requirement between the circuit boards is generated. Such as transformer to circuit board connections, inductor to circuit board connections, and the like. Therefore, the interconnection and switching structure among a plurality of PCBs becomes a problem which must be solved seriously.

The existing interconnecting and switching structure among a plurality of PCBs mostly uses standard pins, customized connecting and conducting shafts, flexible flat cables RFC, FPC, connectors and the like. In practice, the connecting structure which can really meet the design requirement is almost a customized part, and the cost of the customized part is often very high. For example, the pin header needs to solve the problem of how to align the pin header holes and then weld again in the assembly process due to different pin count, so as to meet the requirement of product precision, the equipment investment needs to be increased, higher requirements are also put forward in the assembly process, and the cost is naturally increased. For example, the flex cable and the connector are required to be customized to products with actually required lengths, so that the bending resistance and the firmness are poor, and the defects of complex assembly process, required customization, low firmness, high cost and the like exist in the existing design.

Fig. 5 and 6 show an interconnection and switching structure among a plurality of PCBs in the prior art, wherein the customized connection through shaft 7 shown in fig. 5 is a customized piece which is very costly and is a machined piece. Compared with a mold, the mold has the defects of small yield, low automation level and the like. The second and third rows of pins 9 and 10, as shown in fig. 6, require an increased number of pins to meet the actual current demand due to their current passing limitation. Meanwhile, when the number of the pins is increased, the pins need to be connected with a plurality of circuit boards in an interconnecting mode, the requirements on the accuracy and the assembling process are more complex, the pins cannot be automatically punched at present due to the structure, and then automatic welding equipment needs to be put into the pins to complete welding after the pins are assembled and connected with the circuit boards. In addition, due to the requirements of voltage resistance and insulation of the circuit, the second pin header 9 and the third pin header 10 shown in fig. 6 are almost all made of fixed parts.

SUMMERY OF THE UTILITY MODEL

The utility model provides an interconnection switching structure between PCB inter-plate for solve the complicated, the higher problem of cost of current circuit package assembly technology.

The embodiment of the utility model provides an one of, interconnect switching structure between PCB board, including polylith PCB, wherein there is the second circuit board to be main circuit board, and first circuit board is vice circuit board. And the second circuit board is provided with a patch nut, the first circuit board is provided with a screw hole, a screw passes through the screw hole on the first circuit board by adopting a screw, and the corresponding patch nut on the second circuit board is fastened to install the first circuit board on the second circuit board.

Firstly, arranging a high-temperature-resistant insulating sheet between the chip nut and the second circuit board, removing the high-temperature-resistant insulating sheet from the lower part of the chip nut after the chip nut 3 and the second circuit board 4 are automatically punched, then assembling a third circuit board and the first circuit board, and finally, punching a screw hole by using automatic screw punching equipment to complete circuit board installation.

Compared with the prior art, the utility model, following beneficial effect has:

1. in the selection of the type, the adopted patch nuts and screws are standard parts, and compared with the pin header, the customized connecting conducting shaft, the flat cable, the FPC, the connector assembly and the like, the large-batch rolling is adopted, so that the production efficiency is high, the yield is high, the cost is low, the universality is good, the standardized use is facilitated, and the like;

2. in the production process and the assembly process, compared with a pin header, a customized connecting conducting shaft, a flat cable, an FPC (flexible printed circuit), a connector and the like, the automation is easier to realize by the patch nut and the screw. The paster nut can satisfy and beat the board in circuit board mill automation, does not need manual welding. The hole and the back of the circuit board are not needed to be welded in the assembling process of an assembling factory, the wire arrangement, the glue dispensing and the fixing are not needed, the winding displacement is not needed to be broken, the connector is not needed to be loosened, or the glue dispensing and the fixing are adopted for preventing the loosening. Comprehensively consider, adopt paster nut and screw, it is high to have degree of automation, need not to weld once more, need not work stations such as reason line.

3. In electrical parameters, compared with a pin header, a customized connecting conducting shaft, a flat cable, an FPC (flexible printed circuit), a connector and the like, the chip-mounted nut and the chip-mounted screw are made of copper materials with good conductivity, have larger cross-sectional areas, and have the advantages of small conducting impedance, good heat dissipation, large current-carrying capacity and the like.

4. The structure equipment is simple reliable, need not drop into big tool equipment, welding equipment, point and glues equipment. Therefore, the assembly is simple, the efficiency is high, the investment in equipment is less, and the labor investment and the equipment investment are saved.

5. The utility model discloses a paster nut and screw threaded connection's structure, easy operation, structural reliability is strong, saves structure space, does not have cracked risk after bending many times such as patchcord.

Drawings

The above and other objects, features and advantages of exemplary embodiments of the present invention will become readily apparent from the following detailed description read in conjunction with the accompanying drawings. Several embodiments of the present invention are illustrated by way of example, and not by way of limitation, in the figures of the accompanying drawings and in which:

fig. 1 is a schematic diagram of an overall structure of an interconnection structure between PCBs in an embodiment of the present invention.

Fig. 2 is an exploded view of an embodiment of the present invention showing an assembly of the interconnection structure between PCBs.

Fig. 3 the embodiment of the present invention provides a schematic structural diagram of a patch nut after automatic striking plate.

Fig. 4 the embodiment of the present invention is a schematic view of a high temperature resistant insulating sheet structure of a patch nut.

Fig. 5 is a schematic structural diagram of a customized connection via shaft of a conventional interconnection and transition structure between PCBs.

Fig. 6 is a schematic structural diagram of a pin header of a conventional interconnection and transition structure between PCBs.

1-screw, 2-first circuit board, 3-patch nut, 4-second circuit board, 5-third circuit board, 6-high temperature resistant insulating thin sheet, 7-connecting conducting shaft, 8-first pin, 9-second pin, 10-third pin, 11-inductor, 12-transformer.

Detailed Description

According to one or more embodiments, the interconnecting and switching structure between the multiple PCBs comprises a main circuit board, a secondary circuit board, a small circuit board, a patch nut and screws. The main circuit board, the auxiliary circuit board and the small circuit board are customized according to the design requirements of the actual circuit topological structure, and can be one circuit board, two circuit boards, three circuit boards and four circuit boards … …, and the specific requirements of the topological structure, the device type selection and the structural space are specifically seen. The patch nuts and the screws are standard parts, and the height of the interconnection and transfer structure among the PCBs is selected to meet the height requirement of the interconnection and transfer structure among the PCBs and the reliability test requirement. The method has the advantages of mature production process, suitability for mass production, high production efficiency, high precision, low cost and the like. The patch nut and the screw are standard parts, are rolled in a large batch, and have the advantages of high production efficiency, low cost, good universality, convenience for standardized use and the like.

According to one or more embodiments, as shown in fig. 4, the patch nut of the interconnection and switching structure between multiple PCBs of the present invention has a high temperature resistant insulating sheet so that the circuit board can be automatically printed.

As shown in fig. 3, be the utility model discloses the structural schematic behind the automatic board of circuit board and the paster nut of polylith PCB inter-plate interconnection switching structure, after the automatic board of beating of paster nut and second circuit board, will get rid of like the high temperature resistant insulating thin slice shown in fig. 4 from the paster nut, then assemble first circuit board and third circuit board, accomplish the mounting screw with automatic screw equipment of beating at last.

Meanwhile, as the interconnection switching structure among the PCBs shown in figure 1 is assembled by adopting standard part patch nuts and screws, the automation degree of the whole process is high, the assembly is simple, the structure is reliable, the production efficiency is improved, and the product cost is reduced. Fig. 2 is a schematic diagram of the composition process.

It is worth noting that while the foregoing has described the spirit and principles of the present invention with reference to several specific embodiments, it is to be understood that the present invention is not limited to the disclosed embodiments, nor is the division of aspects, which is for convenience only as the features in these aspects cannot be combined. The invention is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

Claims

1. An interconnection and transfer structure between PCBs is characterized in that the structure comprises a plurality of PCBs, wherein a second circuit board is a main circuit board, a first circuit board is a secondary circuit board,

and the second circuit board is provided with a patch nut, the first circuit board is provided with a screw hole, a screw passes through the screw hole on the first circuit board by adopting a screw, and the corresponding patch nut on the second circuit board is fastened to install the first circuit board on the second circuit board.

2. The interconnection and transfer structure between PCBs as claimed in claim 1, further comprising a plurality of sub circuit boards, wherein the third circuit board is a sub circuit board, the third circuit board is provided with screw holes, screws are inserted through the screw holes of the third circuit board, and the third circuit board is mounted on the second circuit board by fastening the third circuit board to corresponding patch nuts on the second circuit board.

3. The interconnection and transfer structure between PCBs as claimed in claim 2, wherein a high temperature resistant insulating sheet is first disposed between the chip nut and the second circuit board, after the chip nut 3 and the second circuit board 4 are automatically punched, the high temperature resistant insulating sheet is removed from under the chip nut, then the third circuit board and the first circuit board are assembled, and finally the circuit board is mounted by punching the screw with an automatic screw punching device.

4. The interconnection and transfer structure between PCBs as claimed in claim 3, wherein the patch nut and screw are standard components, packaged in bulk packages.