The design of extended USBType-C connector

Expansive USB designed step by stepType-C connectorIncluding: circuit board; housing for installing circuit board; two or more connectors, which are respectively electrically connected to the circuit board, wherein the two or more connectors include at least a USB Type-C connector; two or more wires, one end of which is respectively Electrically connected to the circuit board, and electrically connected to two or more connectors through the circuit board; and a connector joint, which is electrically connected to the other end of the two or more wires; the housing includes an upper cover and a lower cover; the expansion device passes through the connector The connector is connected to the corresponding connector on the computer motherboard; the circuit board is provided with a detection module, and a bolt assembly for connection is provided between the upper cover and the lower cover. The bolt assembly includes a screw rod and a nut that is threadedly connected to the two ends of the screw rod. It also includes a negative pressure cover made of rubber for accommodating nuts. The top of the negative pressure cover is hemispherical, and the bottom is annular. There is a flexible bellows between the top and the bottom, and the bottom is equipped with the upper cover or the lower cover. The annular gasket is provided with an annular installation groove on the annular gasket, the bottom of which is inserted into the annular installation groove, and a sealing ring is arranged in the annular installation groove.

The negative pressure cover with a hemispherical top is in contact with the circuit board in the shell to prevent the circuit board of the USBType-C connector from being scratched; during installation, the air in the negative pressure cover is discharged by squeezing the flexible bellows, and the negative pressure , To realize the connection of the negative pressure cover with the upper and lower covers and nuts. The detection module includes a voltage comparison circuit and an indication circuit, the indication circuit is connected to the output end of the voltage comparison circuit; the USBType-C connector detection module also includes a voltage divider circuit connected between the USB connector and the voltage comparison circuit; the voltage divider circuit includes Resistor 1, resistor 2, and resistor 3 connected in series between the positive and negative output terminals of the USB connector; the voltage comparison circuit includes a voltage comparison chip, the voltage comparison chip includes comparator 1 and comparator 2, and the negative input of comparator 1 The terminal is connected to the connecting terminal of resistor 1 and resistor 2, the output terminal of comparator 1 is connected to the indicating circuit, the positive input terminal of comparator 2 is connected to the connecting terminal of resistor 2 and resistor 3, and the output terminal of comparator 2 is connected to the indicating circuit ; The positive input terminal of the comparator 1 is connected with a reference voltage, and the negative input terminal of the comparator 1 is connected with the positive input terminal of the comparator 1.

The comparison circuit and voltage divider circuit of the USBType-C connector compares the detection voltage with the preset reference voltage, which can achieve accurate voltage detection effects. The indicating circuit informs relevant operators to troubleshoot the malfunctioning USBType-C connector. The indicating circuit also includes a diode connected between the cathode of the light emitting diode and the output terminal of the comparator, and a diode connected between the cathode of the light emitting diode and the output terminal of the comparator. Through the voltage detection of two diodes at different locations, it is convenient for the operator to quickly analyze the fault location.