Design of extended USB Type-C connector

The expanded USB Type-C connector designed step by step includes: circuit board; A housing for mounting a circuit board; More than two connectors, which are respectively electrically connected with the circuit board, wherein the more than two connectors at least comprise USB Type-C connectors; More than two wires, one end of which is electrically connected to the circuit board respectively, and electrically connected to more than two connectors through the circuit board; And a connector joint which is electrically connected with the other ends of more than two wires; The shell comprises an upper cover and a lower cover; The expansion device is connected with the corresponding connector on the computer motherboard through the connector connector; Wherein, a detection module is arranged on the circuit board, and a bolt assembly for connection is arranged between the upper cover and the lower cover, and the bolt assembly comprises a screw and nuts which are respectively connected with the two ends of the screw, and also comprises a negative pressure cover made of rubber for accommodating the nuts; the top of the negative pressure cover is hemispherical, and the bottom is annular; a flexible corrugated pipe is arranged between the top and the bottom; an annular pad for abutting against the upper cover or the lower cover is arranged on the bottom; an annular mounting groove is arranged on the annular pad; the bottom is inserted into the annular mounting groove; and a sealing ring is arranged in the annular mounting groove.

The contact between the negative pressure cover with hemispherical top and the circuit board in the shell can prevent the circuit board of USB Type-C connector from being scratched. During installation, the air in the negative pressure cover is exhausted by squeezing the flexible bellows, and the negative pressure cover is connected with the upper cover, the lower cover and the nut through negative pressure. The detection module comprises a voltage comparison circuit and an indication circuit, and the indication circuit is connected with the output end of the voltage comparison circuit; The USB Type-C connector detection module further comprises a voltage dividing circuit connected between the USB connector and the voltage comparison circuit; The voltage dividing circuit comprises a resistor 1, a resistor 2 and a resistor 3 which are sequentially connected in series between the positive and negative output terminals of the USB connector; The voltage comparison circuit comprises a voltage comparison chip comprising a comparator 1 and a comparator 2, wherein the negative input end of the comparator 1 is connected with the connecting ends of resistors 1 and 2, the output end of the comparator 1 is connected with an indicating circuit, the positive input end of the comparator 2 is connected with the connecting ends of resistors 2 and 3, and the output end of the comparator 2 is connected with the indicating circuit; The positive input of the comparator 1 is connected with a reference voltage, and the negative input of the comparator 1 is connected with the positive input of the comparator 1.

The comparison circuit and voltage divider circuit of USB Type-C connector compare the detected voltage with the preset reference voltage, which can achieve accurate voltage detection effect. The indicating circuit informs relevant operators to handle the failure of the failed USB Type-C connector. The indicating circuit also includes a diode connected between the cathode of the LED and the output end of the comparator, and a diode connected between the cathode of the LED and the output end of the comparator. Through the voltage detection of two diodes at different locations, it is convenient for operators to quickly analyze the fault location.