CN205319451U - Novel DB9 interface converting head - Google Patents

Abstract

The utility model provides a novel DB9 interface converting head, connect 9 dial switch between needle type DB9 interface and pass DB9 interface including needle type DB9 interface, pass DB9 interface, installation shell and electricity, needle type DB9 interface and pass DB9 interface set up respectively in the both ends of installation shell, and 9 dial switch set up on a lateral wall of installation shell, and when 9 dial switch were closed, the 1 -9 pin of needle type DB9 interface is the 1 -9 pin of one -to -one electricity connection pass DB9 interface respectively. The utility model provides a novel DB9 interface converting head dials the shelves switch or further sets up 2 inner core merit transformation of energies of dialling the shelves switch and realizing the COM line of standard through set up 9 in the middle of two DB9 interfaces, so can realize the mesh of a ray of N of replacement finding activate function.

Description

A kind of novel DB9 interface conversion head

Technical field

This utility model relates to serial communication interface switch technology field, is specifically related to a kind of novel DB9 interface conversion head.

Background technology

The existing interface standard for connecting electronic equipment (such as: computer and peripheral hardware) commonly uses D type data-interface, wherein, serial communication interface RS232, namely DB9 interface has 9 pins, receive and can carry out with transmission data simultaneously, so reception and transmission have respective data wire. Needle-like DB9 interface and pass DB9 interface are respectively arranged with 9 pins, the pin arrangements of needle-like DB9 interface and pass DB9 interface is respectively as shown in FIG. 1A and 1B, wherein, connect the data wire of 2 pins of needle-like DB9 interface and pass DB9 interface for receiving line, connect the data wire of 3 pins of needle-like DB9 interface and pass DB9 interface for sending line.

Direct-through line on ordinary meaning is normal exactly to be connected: 2 connect 2,3 connect 3, and (namely needle-like DB9 interface TX pin and pass DB9 interface TX pin connect, the RX pin of needle-like DB9 interface is connected with the RX pin of pass DB9 interface), general serial ports extended line just belongs to this, is commonly used in the connection of equipment and computer; Reticule is exactly interconnection: 2 connect 3,3 connects 2 (namely needle-like DB9 interface TX pin and pass DB9 interface RX pin connect, and the RX pin of needle-like DB9 interface is connected) with the TX pin of pass DB9 interface, is generally used for the direct-connected of equipment and equipment.

It is to say, the pin 2-RX pin on computer, it is receive data, pin 3-TX pin, is send data.

And equipment to coordinate with computer, computer is receive data by pin 2, should be just send equipment. So, with straight-through Serial Port Line, computer is connected with equipment, it is possible to proper communication. If but the Serial Port Line of two such equipment non-crossing be connected, then can not proper communication, now to use intersection Serial Port Line.

It is engaged in the worker of communication research work, every time will look for several Serial Port Line and several conversion head when data between test communication apparatus, for instance: only 235 feet line one to one, only 235 wherein 23 lines intersected, line all corresponding for 1-9,23 lines etc. intersected in 1-9 line.The relation of communication has a variety of, for instance: master-slave communication, main communication, from from communication etc., a period of time direct-through line, a period of time reticule, some equipment needs 1-9 line all to connect, and some has only to tri-lines connections of TXD, RXD, GND. Research and development test job in very inconvenient.

Accordingly, it is desirable to provide a kind of novel DB9 interface conversion head is to solve above-mentioned technical problem.

Utility model content

The technical problems to be solved in the utility model is to provide a kind of novel DB9 interface conversion head, meets the demand of the multiple occupation mode of user.

This utility model solves the technical scheme of above-mentioned technical problem and is to provide a kind of novel DB9 interface conversion head with following structure, including needle-like DB9 interface, pass DB9 interface, mounting shell and 9 toggle switch being connected electrically between needle-like DB9 interface and pass DB9 interface, needle-like DB9 interface and pass DB9 interface are respectively arranged at the two ends of mounting shell, 9 toggle switch are arranged on a sidewall of mounting shell, when 9 toggle switch all close, the 1-9 pin of 1 to 9 pins of needle-like DB9 interface one_to_one corresponding electrical connection pass DB9 interface respectively.

In one preferred embodiment of novel DB9 interface conversion head of the present utility model, farther include 2 toggle switch, described 2 toggle switch are arranged on another sidewall of mounting shell, the two ends pin of the first toggle switch of described 2 toggle switch is electrically connected 2 feet of needle-like DB9 interface and 3 feet of pass DB9 interface, and the two ends pin of the second toggle switch of described 2 toggle switch is electrically connected 3 feet of needle-like DB9 interface and 2 feet of pass DB9 interface.

In one preferred embodiment of novel DB9 interface conversion head of the present utility model, described 2 toggle switch and 9 toggle switch are fixed and are connected.

The beneficial effects of the utility model are mainly: by arranging 9 fork shifts switches in the middle of two DB9 interfaces or arranging the conversion of inner core function that 2 fork shifts switches realize the COM line of standard further, so can reach a line and replace the purpose of N bar line function.

Accompanying drawing explanation

Figure 1A is the pin arrangements schematic diagram of needle-like DB9 interface in prior art;

Figure 1B is the pin arrangements schematic diagram of prior art mesothyrid DB9 interface;

Fig. 2 is the exploded perspective figure of the first preferred embodiment of novel DB9 interface conversion head of the present utility model;

Fig. 3 is the front view of the first preferred embodiment of DB9 interface conversion head of the present utility model;

Fig. 4 is the top view of the first preferred embodiment of DB9 interface conversion head of the present utility model;

Fig. 5 is the rearview of the first preferred embodiment of DB9 interface conversion head of the present utility model;

Fig. 6 is the schematic diagram of a concrete application case of the novel DB9 interface conversion head shown in Fig. 2-Fig. 5.

Detailed description of the invention

Below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is described in detail.

Wherein, Fig. 2 and Fig. 4 eliminates the line part that connects one to one between needle-like DB9 interface P1 and pass DB9 interface P2, and Fig. 5 eliminates 9 toggle switch SW1.

As shown in Figure 2-5, the novel DB9 interface conversion head of the first preferred embodiment of the present utility model includes needle-like DB9 interface P1, pass DB9 interface P2, mounting shell H and 9 the toggle switch SW1 being connected electrically between needle-like DB9 interface P1 and pass DB9 interface P2, needle-like DB9 interface P1 and pass DB9 interface P2 is respectively arranged at the two ends of mounting shell H, 9 toggle switch SW1 are arranged on a sidewall of mounting shell H, when 9 toggle switch SW1 close, the 1-9 pin of the 1-9 pin of needle-like DB9 interface P1 one_to_one corresponding electrical connection pass DB9 interface P2 respectively.

In the present embodiment, the disconnection switched due to each fork shift of 9 toggle switch SW1 can distinguish unrestricted choice with Guan Bi, so can realize 235 direct communication line functions, the straight-through connection function of 2-6, the straight-through connection function of 1-9 etc., so can extend the use function of connection, bring advantage to the user, and the cost buying multiple connection can be saved.

Please referring further to Fig. 2-Fig. 5, the novel DB9 interface conversion head of the present embodiment farther includes 2 toggle switch SW2,2 toggle switch SW2 are arranged on another sidewall of mounting shell H, the two ends pin of first toggle switch of 2 toggle switch SW2 is electrically connected 2 feet of needle-like DB9 interface P1 and 3 feet of pass DB9 interface P2, and the two ends pin of second toggle switch of 2 toggle switch SW2 is electrically connected 3 feet of needle-like DB9 interface P1 and 2 feet of pass DB9 interface P2.

After adding 2 toggle switch SW2,2 toggle switch SW2 and 9 fork shifts switch SW1 with the use of, further increase the Cross talk function of connection.

Specifically used case is as shown in Figure 6: setting up a simple monitor supervision platform in commercial production needs mutually to transmit data between the mainboard MCU101 of single-chip microcomputer and person-computer union (HMI master 102 and HMI far-end from machine ID103), HMI master 102 and HMI far-end send query statement from machine ID103, and mainboard MUC101 replys.

HMI far-end can pass through the serial ports of another HMI master 102 from machine ID103, it is achieved mainboard MCU101 or other functions such as the supervision controlling equipment and control to single-chip microcomputer. Now it is equivalent to have two control ends can slave be operated. The definition of the communication interface of HMI and the definition of MCU communication interface are described in table 1 below:

Table 1

Come in one referring to Fig. 6, analytical data line 104:

2 feet for the interface COM2 of data wire 104 are RX, are receive data, and 3 feet are TX, are send data. And HMI far-end to be mated from the interface COM1 of machine ID103, the interface COM2 of HMI master 102 is send from 2 feet of the interface COM1 of machine ID103 by HMI far-end, so just can match.

So data wire 104 needs to be connected with reticule between screen with screen, concrete: have only to open 2 switches of 2 fork shift switch SW2 of novel DB9 interface conversion head, 2 feet of the interface COM2 of HMI master 102 connect 3 feet of the HMI far-end COM1 interface from machine ID103,3 feet of the interface COM2 of HMI master 102 connect 2 feet of the HMI far-end COM1 from machine ID103, open the 5th fork shift switch of 9 fork shift switch SW1 again, 5 feet of the interface COM2 of HMI master 102 connect 5 feet of the HMI far-end COM1 from machine ID103, it is possible to normal transceiving data.

Analytical data line 105:

2 feet of the interface COM1 of HMI master 102 are RX, are receive data, and 3 feet are TX, are send data. And mainboard MCU101 to be mated, the interface COM1 of HMI master 102 is send by 2 feet of the interface of mainboard MCU101, so just can match;

So data wire 105 direct-through line, we have only to open 9 fork shifts switch the 2 of SW1,3,5 switches, thus can normal transceiving data.

In the first preferred embodiment of the present utility model, it is preferable that 2 toggle switch SW2 and 9 fixing connections of toggle switch SW1, so can realize Integration Design.

In the second preferred embodiment of novel DB9 interface conversion head of the present utility model, do not include 2 fork shift switch SW2, such second preferred embodiment relatively the first preferred embodiment cannot realize: the pin 2 of needle-like DB9 interface connects the pin 3 of pass DB9 interface, and the pin 2 of needle-like DB9 interface connects the pin 2 of pass DB9 interface.

At novel DB9 interface conversion head of the present utility model, by arranging 9 fork shift switches, can realizing the break-make of circuit between 9 pins of unrestricted choice needle-like DB9 interface and pass DB9 interface, 2 the fork shifts switches further arranged can realize the interconnection of pin 2 and pin 3 between unrestricted choice needle-like DB9 interface and pass DB9 interface and direct-connected connect.

The above only lists the way of realization of this utility model design; protection domain of the present utility model is not construed as being only limitted to the concrete form that embodiment is stated; all within spirit of the present utility model and principle; any amendment of being made, equivalent replacement, improvement etc., should be included within protection domain of the present utility model.

Claims (3)

1. a novel DB9 interface conversion head, it is characterized in that: include needle-like DB9 interface, pass DB9 interface, mounting shell and 9 toggle switch being connected electrically between needle-like DB9 interface and pass DB9 interface, needle-like DB9 interface and pass DB9 interface are respectively arranged at the two ends of mounting shell, when 9 toggle switch all close, the 1-9 pin of 1 to 9 pins of needle-like DB9 interface one_to_one corresponding electrical connection pass DB9 interface respectively.

2. novel DB9 interface conversion head according to claim 1, it is characterized in that, farther include 2 toggle switch, described 2 toggle switch are arranged on another sidewall of mounting shell, the two ends pin of the first toggle switch of described 2 toggle switch is electrically connected 2 feet of needle-like DB9 interface and 3 feet of pass DB9 interface, and the two ends pin of the second toggle switch of described 2 toggle switch is electrically connected 3 feet of needle-like DB9 interface and 2 feet of pass DB9 interface.

3. novel DB9 interface conversion head according to claim 2, it is characterised in that described 2 toggle switch and 9 fixing connections of toggle switch.