Surface adhering type connector, circuit board module and circuit board assembly

Abstract

The present invention discloses a surface adhering type connector, a circuit board combination and a circuit board module. The surface adhering type connector is used for connecting a first circuit board and a second circuit board. The surface adhering type connector comprises a first end part used for connecting with the first circuit board and a second end part which extends with a side wall which defines an accommodating part used for accommodating welding materials, wherein a part of the welding materials are essentially convex corresponding to the side wall so as to utilize the welding materials to contact the second circuit board and ensure that the first circuit board and the second circuit board are electrically connected. Therefore, the surface adhering type connector has the advantages that the welding materials are arranged on the second end part of the surface adhering type connector, thereby saving the step of precisely adjusting the flatness of each surface adhering typeconnector, shortening processing time, and saving processing processes.

Description

technical field [0001] The invention relates to a connector for connecting circuit boards, a circuit board assembly and a circuit board component module, in particular to a surface-adhesive connector for connecting two circuit boards and the circuit board assembly. Background technique [0002] With the advancement of science and technology, the operating efficiency of electronic devices has been continuously improved. In order to increase the operating power and meet the trend of miniaturization of products, the volume of electronic devices must be continuously reduced, and the internal structure must be arranged more tightly. Connectors ( Also known as conductive pins, they are used to connect two circuit boards inside the electronic device, so that the electronic components or circuits on the two circuit boards can be electrically connected. [0003] Generally speaking, the connector can be plugged into a predetermined hole on the circuit board, or two circuit boards can ...

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Problems solved by technology

[0004] However, since the first circuit board 11 of the circuit board component module 10 will be deformed and warped due to high temperature during reflow, and the thickness between the connector 12 and the first circuit board 11 may be uneven due to the melting of the solder paste 14 , Then cause a plurality of connectors 12 to be used to connect the side of the second circuit board 13 not in the same horizontal plane, that is, the situation that the flatness of the connectors 12 is easy to have unevenness, and once the relatively protruding and relatively concave connections When the height difference h between the connectors 12 is greater than the thickness of the solder paste 14 on the surface of the second circuit board 13, the relatively concave connector 12 cannot contact the solder paste 14 on the surface of the second circuit board 13, so the connector 12 and the second circuit board There will be incomplete tin eating between the boards 13, or even no tin eating, which will affect the conductivity and stability between the first and second circuit boards 11 and 13 and reduce the yield of finished products

[0005] In order to avoid the phenomenon of incomplete soldering between the above-mentioned connector 12 and the second circuit board 13, it is generally necessary to strengthen the control of the flatness of the connector 12 during processing. However, it is understandable that due to the The coated solder paste 14 is extremely thin, about 0.12-0.15 mm, so if it is desired to simultaneously take into account the deformation of the first circuit board 11 and the flatness of the adhesion between the first circuit board 11 and the connector 12, and connect multiple connections The surface height difference h of the device 12 adhered to the second circuit board 13 is reduced to a certain range, which is difficult to control during processing and relatively prolongs the processing time

[0006] In view of this, how to develop a circuit board module with a surface-mounted connector and its circuit board combination to simplify and shorten the processing time and avoid the situation that the connectors between the circuit boards cannot be tinned, thereby maintaining the qualified rate of finished products , which is an urgent problem to be solved by people in related technical fields

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