CN203423702U

CN203423702U - Dual network switching device

Info

Publication number: CN203423702U
Application number: CN201320518153.6U
Authority: CN
Inventors: 董隽含
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-08-23
Filing date: 2013-08-23
Publication date: 2014-02-05
Anticipated expiration: 2023-08-23

Abstract

The utility model relates to a dual network switching device, which is characterized by comprising a touch button, a main control panel, a power supply and a relay switching module, wherein the touch control button is connected with the main control panel, the main control panel is connected with the relay switching module, the power supply is connected to a computer USB interface through a USB socket to take power. All circuit structures of the dual network switching device adopt full SMD components, a touch button part and a host are connected by adopting a flexible wire, the components are all installed in a switching box except for the touch button part, and a USB cable is connected between the switching box and the host. The dual network switching device is simple and reliable in circuit and does not need to be debugged. When the dual network switching device is used, an external network cable and an internal cable are inserted into corresponding network ports respectively, a PC network cable is inserted into a PC network port, and an internal network and an external network can be switched conveniently by operating the touch switch on the desktop. Meanwhile, a touch switch box is provided with a bright-colored and eye-catching indicator lamp to indicate which network is connected at present.

Description

Two net switching device shifters

Technical field

The utility model relates to the device that a kind of external the Internet and internal lan switch mutually.

Background technology

Along with internet development, network security is most important.Therefore the unit such as some schools, research institutions adopts internal lan mode to guarantee safety.But, because some needs, sometimes need to link external the Internet.So a computer had both needed to link internal lan, needed again to link external the Internet, also need to guarantee network security simultaneously.At present, the main dependence of network switching user manually changes netting twine and realizes, very inconvenient, therefore needs a kind of device that can conveniently switch heterogeneous networks.

Utility model content

The purpose of this utility model is to provide and a kind ofly can conveniently realizes the device that external the Internet and internal lan switch mutually.

For achieving the above object, the utility model provides a kind of pair of net switching device shifter, it is characterized in that: comprise contact button, master control borad, power supply, relay handover module, contact button connects master control borad, master control borad connects relay handover module, and power supply is connected in the power taking of computer USB mouth by USB socket.

Master control borad core is that the bistable list forming with time-base circuit NE555 touches reverse circuit composition, adopts discharge tube 7 pin outputs, maintains output constant a stable state by R1, R2 simultaneously; When needs change state, the contact button connecting by connector P1 forms feedback loop, another stable state that forces output state to change; System output state by R4 and R5 current limliting after, by 7 pin and 3 pin, driven respectively the LED light-emitting diode on contact button side, carry out indicating device work at present state, system output outputs to relay handover module by the unification of " RLY " terminal, to realize network, switches.

Relay handover module adopts four Miniature precision incoming signal relays to carry out handover network, four Control windings are connected respectively to master control borad output " RLY ", each relay is responsible for two switchings that network twisted-pair cable is right, when " RLY " output high level, relay contact is connected to outer network interface on PC mouth; And when working as " RLY " and being output as low level, relay contact connects interior network interface all on PC mouth, thereby realize two nets, switch.

The all circuit structures of the utility model adopt full surface mount elements, and contact button partly with between main frame adopts flexible cord to be connected.Except the remaining part of contact button part is installed in a ConvertBox.Between ConvertBox and main frame, be connected USB cable.Simple circuit is reliable, without debugging.During use, outer netting twine and interior netting twine insert respectively corresponding network interface, and PC netting twine inserts PC network interface.Touch-switch on operation desktop can conveniently switch intranet and extranet.Which network what on touch switch box, have bright-coloured eye-catching indicator light indication connection at present is simultaneously.

Accompanying drawing explanation

Fig. 1 is the block diagram of the utility model execution mode;

Fig. 2 is contact button circuit diagram in the utility model execution mode;

Fig. 3 is power circuit diagram in the utility model execution mode;

Fig. 4 is master control borad circuit diagram in the utility model execution mode;

Fig. 5 is the utility model execution mode relaying electricity handover module circuit diagram.

Embodiment

With reference to Fig. 1, the utility model execution mode comprises contact button, master control borad, power supply, relay handover module, and contact button connects master control borad, and master control borad connects relay handover module, and power supply is connected in the power taking of computer USB mouth by USB socket.

With reference to Fig. 2, contact button is a minute metallic sensitive switch, is arranged in bijou plastic cement cover, and there are two miniature LED high-brightness light emitting diodes on side, to indicate this device work at present state.The work at present of when red indication device is in Intranet, and the bright indication device of blue lamp switches on outer net.Whole module is connected with the control line coming from master control borad by Miniature connector P1.

With reference to Fig. 3, power supply is connected in computer USB mouth and power taking by USB mouth by standard USB line, thereby very convenient, does not need separately to establish power supply, and institute's power taking is the use of the normal operation of whole device completely enough.After taking out, supply voltage by C2 filtering, then by VCC and GND common port, outputs to each several part operating circuit.

With reference to Fig. 4, master control borad core is that the bistable list forming with time-base circuit NE555 touches reverse circuit composition, adopts discharge tube 7 pin outputs, maintains output constant a stable state by R1, R2 simultaneously; When needs change state, the contact button connecting by connector P1 forms feedback loop, another stable state that forces output state to change; System output state by R4 and R5 current limliting after, by 7 pin and 3 pin, driven respectively the LED light-emitting diode on contact button side, carry out indicating device work at present state, system output outputs to relay handover module by the unification of " RLY " terminal, to realize network, switches.

With reference to Fig. 5, relay handover module adopts four Miniature precision incoming signal relays to carry out handover network, four Control windings are connected respectively to master control borad output " RLY ", each relay is responsible for two switchings that network twisted-pair cable is right, when " RLY " output high level, relay contact is connected to outer network interface on PC mouth; And when working as " RLY " and being output as low level, relay contact connects interior network interface all on PC mouth, thereby realize two nets, switch.

Claims

1. two net switching device shifters, is characterized in that: comprise contact button, master control borad, power supply, relay handover module, contact button connects master control borad, and master control borad connects relay handover module, and power supply is connected in the power taking of computer USB mouth by USB socket, wherein:

Master control borad core is that the bistable list forming with time-base circuit NE555 touches reverse circuit composition, adopts discharge tube 7 pin outputs, maintains output constant a stable state by R1, R2 simultaneously; When needs change state, the contact button connecting by connector P1 forms feedback loop, another stable state that forces output state to change; System output state by R4 and R5 current limliting after, by 7 pin and 3 pin, driven respectively the LED light-emitting diode on contact button side, carry out indicating device work at present state, system output outputs to relay handover module by the unification of " RLY " terminal, to realize network, switches;