CN2850092Y

CN2850092Y - Telephone lightning protection device

Info

Publication number: CN2850092Y
Application number: CN 200520065683
Authority: CN
Inventors: 刘永旅
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-10-12
Filing date: 2005-10-12
Publication date: 2006-12-20
Anticipated expiration: 2015-10-12

Abstract

The utility model discloses a telephone lightning protection device which is characterized in that a grounding surge protection circuit is connected between two telephone lines. The utility model has the advantages of simple structure and convenient operation, and the utility model is suitable for fixed telephone sets for households and offices.

Description

The phone lightning protection device

Technical field

The utility model relates to lightning protection device, in particular for the device of landline telephone lightning protection.

Background technology

In order to reduce thunderbolt electrical equipment and personal safety are damaged, people have designed the various devices that are used for each electric appliances lightning protection.Telephone is a weak electrical appliance, and people have often ignored the lightning protection to it, does not see the reported in literature of relevant phone lightning protection device.But the newspaper report was once arranged, and a Guangzhou old man is struck by lightning when using telephone at home, causes ear hemorrhage injured.As seen, the lightning protection of telephone also is very important.

The utility model content

The purpose of this utility model provides a kind of phone lightning protection device, can avoid thunderbolt by telephone wire transmission to the infringement of the person and telephone set effectively.

For reaching above-mentioned purpose, the utility model adopts following technical scheme: the feature of this phone lightning protection device is the surge protection circuit that is connected with ground connection between two telephone wires.

Described surge protection circuit comprises the air discharge tube that two ends are connected with two telephone wires respectively, the middle common end grounding of air discharge tube.

Described surge protection circuit comprises a plurality of diodes and at least one Transient Voltage Suppressor; One end of described arbitrary Transient Voltage Suppressor is connected with the anode of a plurality of diodes, and the negative electrode of each diode is connected with ground wire and two telephone wires respectively; The other end of Transient Voltage Suppressor is connected with the negative electrode of a plurality of two utmost points, and the anode of this each diode is connected with ground wire and two telephone wires respectively.

As a kind of preferred version, described surge protection circuit comprises six diodes and a Transient Voltage Suppressor; One end of described Transient Voltage Suppressor is connected with the anode of three diodes, and the negative electrode of each diode is connected with ground wire and two telephone wires respectively; The other end of described Transient Voltage Suppressor is connected with the negative electrode of other three two utmost points, and the anode of each diode is connected with ground wire and two telephone wires respectively.

In order to prevent current overload, on described two telephone wires, be in series with a fuse respectively.

As a kind of improvement, described surge protection circuit is fixed in the housing; Have one to be used for the telephone line jack that is connected with telephone network line and to be used for the telephone line jack that is connected with telephone set with one on the housing, described surge protection circuit is connected on the telephone wire between these two jacks.

As further improvement, be fixed with the standard three-pin plug on the described shell, its grounding leg is connected with the earth terminal of surge protection circuit.Certainly, the earth terminal of described surge protection circuit also can extend a lead outside housing, be connected with ground wire.

Lightning protection device of the present utility model is to use like this: the insertion of the standard three-pin plug on the shell is connected with in the standard three-pin socket of ground wire, perhaps the lead that extends outside housing from the surge protection circuit earth terminal is connected with ground wire; A jack on the telephone network line terminal insertion shell, another jack on the shell and telephone set are connected, and can normally use telephone set, and lightning protection device has also entered operating state.When thunderbolt produces voltage surge in telephone wire, be sent to ground wire by surge protection circuit, surge voltage can not be sent on the telephone set, thereby guarantees user's safety.If surge current is strong excessively, blowout has guaranteed that equally also surge current can not arrive on the telephone set.Shell has the standard three-pin plug, and lightning protection device can be fixed in the existing supply socket, and is easy for installation.The utility model is simple in structure, and is easy to use, is suitable for using on the fixed telephone of family, office.

Description of drawings

Fig. 1 is the circuit theory diagrams of a kind of execution mode of the utility model.

Fig. 2 is the circuit theory diagrams of the another kind of execution mode of the utility model.

Fig. 3～Fig. 5 is the contour structures schematic diagram of a kind of execution mode of the present utility model, and wherein, Fig. 3 is the front view of lightning protection device, and Fig. 4 is a rearview, and Fig. 5 is a vertical view.

Fig. 6 is the contour structures schematic diagram of another kind of execution mode of the present utility model.

Embodiment

The internal circuit of the utility model phone lightning protection device is as shown in Figure 1: the circuit two ends are two jacks 2, are respectively applied for to be connected with telephone network line and to be connected with telephone line; Between two jacks 2, connect by two telephone wire A and telephone wire B.On telephone wire A and telephone wire B, be in series with a fuse F respectively.Between telephone wire A and telephone wire B, be connected with an air discharge tube C, the middle common port of air discharge tube C is an earth terminal.The profile of phone lightning protection device can adopt as the form of Fig. 3～Fig. 5 or as the form of Fig. 6, two jacks 2 that are used to insert telephone network line and are used to insert telephone line are located at shell 1, and the grounding leg 3 of the standard three-pin plug among Fig. 5 or the outer guide line 3 ' among Fig. 6 are connected with the middle common port of air discharge tube C.Telephone network line and telephone line (not shown) are inserted respectively in two jacks 2, grounding pin 3 or outer guide line 3 ' ground connection, and lightning protection device promptly enters operating state.When being struck by lightning in telephone wire A or telephone wire B formation surge voltage, air discharge tube C punctures, and surge voltage arrives ground wire G rapidly, thereby has guaranteed the safety of telephone set one end.If the electric current of telephone wire A or telephone wire B is strong excessively, fuse F blows, and can guarantee the safety of telephone set one end equally.

As shown in Figure 2, this is the internal circuit diagram of the another kind of execution mode of the utility model.Different with last embodiment, the surge protection circuit between telephone wire A and the telephone wire B is made up of six diode D1～D6 and a Transient Voltage Suppressor D7; The end of described Transient Voltage Suppressor D7 is connected with the anode of three diode D1, D2, D6, and the negative electrode of each diode is connected with ground wire G and two telephone wire A, B respectively; The other end of described Transient Voltage Suppressor D7 is connected with the negative electrode of other three diode D3, D4, D5, and the anode of each diode is connected with ground wire and two telephone wires respectively.When thunderbolt formed surge voltage between telephone wire A, B, if A is timing, surge added to the D7 two ends through D3, D6, was discharged over the ground by D1 after D7 absorbs.If B is timing, surge adds to the D7 two ends through D2, D5, is discharged over the ground by D4 after D7 absorbs.Thereby can guarantee the safety of telephone set one end.If the electric current of telephone wire A or telephone wire B is strong excessively, blowout can be guaranteed the safety of telephone set one end equally.

Claims

1, a kind of phone lightning protection device is characterized in that: the surge protection circuit that is connected with ground connection between two telephone wires.

2, phone lightning protection device according to claim 1 is characterized in that: described surge protection circuit comprise two ends respectively with described two air discharge tubes that telephone wire is connected, the middle common end grounding of air discharge tube.

3, phone lightning protection device according to claim 1 is characterized in that: described surge protection circuit comprises a plurality of diodes and at least one Transient Voltage Suppressor; One end of described arbitrary Transient Voltage Suppressor is connected with the anode of a plurality of diodes, and the negative electrode of each diode is connected with ground wire and two telephone wires respectively; The other end of Transient Voltage Suppressor is connected with the negative electrode of a plurality of two utmost points, and the anode of each diode is connected with ground wire and two telephone wires respectively.

4, phone lightning protection device according to claim 3 is characterized in that: described surge protection circuit comprises six diodes and a Transient Voltage Suppressor; One end of described Transient Voltage Suppressor is connected with the anode of three diodes, and the negative electrode of these three diodes is connected with ground wire and two telephone wires respectively; The other end of described Transient Voltage Suppressor is connected with the negative electrode of other three diodes, and the anode of these other three diodes is connected with ground wire and two telephone wires respectively.

5, according to claim 1,2,3 or 4 described phone lightning protection devices, it is characterized in that: on described two telephone wires, be in series with a fuse respectively.

6, phone lightning protection device according to claim 5 is characterized in that: described surge protection circuit is fixed in the housing; Have one to be used for the telephone line jack that is connected with telephone network line and to be used for the telephone line jack that is connected with telephone set with one on the housing, described surge protection circuit is connected on the telephone wire between these two jacks.

7, phone lightning protection device according to claim 6 is characterized in that: be fixed with the standard three-pin plug on the described shell, its grounding leg is connected with the earth terminal of surge protection circuit.

8, phone lightning protection device according to claim 6 is characterized in that: the earth terminal of described surge protection circuit stretches out a lead to the shell extension.