Crossover direct connection switchable serial cable

Abstract

The invention discloses a serial port cable of a crossover direct connection switchable switch, which includes signal input and output serial port terminals, the crossover direct connection switchover switch is arranged on the signal input serial port terminal, and a sliding control block sliding left and right is arranged in a switch box In the sliding cavity of the sliding control block, front and rear signal conduction components are respectively set between the sliding control block and the front and rear sliding surfaces of the switch box. The upper and lower front contact pieces of the box are respectively connected to the RXD and TXD of the signal input serial port terminal, and the rear signal conduction assembly includes the upper and lower rear shrapnel arranged on the sliding control block and the upper and lower rear shrapnel arranged on the switch box. , down, left and right four rear contact pieces, and the rear contact pieces are cross-connected and connected to the RXD and TXD of the signal output serial port respectively. The invention can switch the two states of the crossover line and the straight connection line on one serial port line, save the researcher's development time and improve the product debugging efficiency.

Description

technical field [0001] The invention relates to electrical components, in particular to a serial cable of a cross-connected switchable switch. Background technique [0002] Serial cable is widely used in electrical design, mainly for signal transmission. [0003] The existing serial lines are functionally distinguished, mainly including straight-through and cross-connected lines, but the appearance of these two serial lines is almost the same, and there is no special mark to distinguish the type. In the debugging stage of engineering practice, to researchers bring inconvenience. [0004] For this reason, a kind of "Switching Device of Serial Port Direct Connection and Crossover Cable" disclosed in Patent No. 201420477556.5 has designed a structure that uses a double-pole double-throw switch to switch the RXD and TXD signals of the serial port at the same time. This realizes the function of direct connection and crossover switching of serial lines. [0005] For the double-...

AI Technical Summary

Problems solved by technology

[0005] For the double-pole double-throw switch described in "Serial Port Direct Connection and Crossover Line Switching Device", the contact of the switch is a point contact, and the contact resistance is relatively large, which is not good for processing weak serial port signals.

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