CN2290125Y

CN2290125Y - Safety socket and its plug

Info

Publication number: CN2290125Y
Application number: CN 97201694
Authority: CN
Inventors: 李江国
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-03-11
Filing date: 1997-03-11
Publication date: 1998-09-02
Anticipated expiration: 2007-03-11

Abstract

The utility model relates to a safety socket and a plug thereof. Three jacks are arranged on the socket. The three jacks are respectively one round jack and two oblong jacks. Metal contacts with the same number and corresponding positions are respectively fixed on the bottom surface of a socket insulator and in a socket bottom part. The adjacent contacts on the bottom surface of the insulator are communicated. The contacts in the socket bottom part are respectively connected with a zero wire, a fire wire, a ground wire and an oblong jack. Three pins are arranged on the plug and are corresponding to the three jacks on the socket. Only when the plug and the socket of the utility model are used, the plug is provided with electricity. Thus, the safety for electricity use is ensured. The plug and the socket of the utility model can be used for electrical equipment with two and three power cords in families and offices.

Description

Safety socket and plug thereof

The plug that the utility model relates to a kind of safety socket and matches and use with it.

At present, known common socket, for children and be ignorant of the people of safety utilization of electric power, if out of curiosity or hand-held accidentally electric conductor be inserted in the jack of socket, then can cause electric shock accidents, influence personal safety.And can only not have versatility between them corresponding to the plug of two pins or three pins for socket with two holes or three holes, make troubles to use.

The purpose of this utility model provides a kind of safety socket and plug thereof, and when making it in any one jack of metallic conductor insertion socket, conductor is not charged, guarantees the safety of electricity consumption; And make its electric equipment for plug with two power lines (no ground wire) or three power lines (ground wire is arranged), after changing the utility model plug, all can use the utility model socket.

The purpose of this utility model is achieved in that mainly by jack on the safety socket that shell is formed, three jacks are arranged, and one of them be circular socket holes (ground wire), other two be rectangle jack (live wire and zero line).One insulator is arranged below shell, metal column and guide finger are housed below the insulator.On the bottom surface of insulator, fix several hard contacts, also be fixed with the identical and position of quantity hard contact one to one in the bottom of socket.Wherein, the adjacent metal contact on the insulator bottom surface communicates respectively.Contact on the socket bottom is connecting to neutral line, live wire, ground wire and two rectangle jacks respectively.

The safety plug that matches and use with the utility model safety socket has three pins, and one of them pin is a cylindrical pin, and two other pin is the rectangle pin.The size and location of three pins are all corresponding with the size and location of three jacks of safety socket.

Owing to adopt such scheme, have only the utility model plug is inserted the utility model socket, cylindrical pin on the plug is inserted in the circular socket holes, when making the hard contact of the hard contact fixed below the insulator and socket bottom all closed, three leads in three leads in the plug and the socket could conducting, just can have on the plug.

When if hand-held conductor inserts in any one rectangle jack, owing to do not have lead to communicate in two jacks, so conductor do not have electricity, and be ground wire in the circular socket holes, thereby the insertion circular socket holes do not have electricity yet, thereby guaranteed Electrical Safety and personal safety.

In family and the office's electrical appliance equipment, what have is two power lines now, and what have is three power lines, should be respectively with two holes (core) or three holes (core) sockets (head).If use the utility model plug instead, just can make all electric equipments all can use the utility model socket.

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is the utility model safety socket structure figure.

Fig. 2 is the A-A cutaway view of Fig. 1.

Fig. 3 is the B-B cutaway view of Fig. 2.

Fig. 4 is the C-C cutaway view of Fig. 2.

Fig. 5 is the three-dimensional structure diagram of the utility model safety plug.

Among the figure, 1. lock-screw 2. locking springs 3. are locked steel balls 4. jack housing 5.

insulators

6,7,8,9,14,15,16,17. hard contacts 10. metal columns 11,12. guide fingers 13. ground wire contacts 18. cylindrical prongs

In the structure chart of the embodiment of the utility model safety socket shown in Fig. 1,2,3,4, have three jacks, wherein, jack K1 is a cylindrical receptacle, jack K2 and K3 are the rectangle jack.Respectively have a groove on the opposite position in the cylinder jack K1 of shell 4, a locking steel ball 3 respectively is housed in each groove, each locking steel ball 3 all links to each other with lock-screw 1 with locking spring 2.Insulator 5 is housed below the shell 4, metal column 10 is housed below the insulator 5, guide finger 11,12. is being fixed four

hard contacts

6,7,16,17 on insulator 5; Also be fixed with four hard contacts 8,9,14,15 on the socket bottom, their position is corresponding one by one with

hard contact

6,7,16,17 respectively.

Hard contact

6 and 16,7 and 17 communicates respectively, zero line and live wire in hard contact 9 and the 8 difference combination hubs; Hard contact 15 and 14 is jointing holes K2 and K3 respectively, hard contact 13 earth connections.

The structure chart of the safety plug that Fig. 5 uses for matching with safety socket shown in Figure 1.This safety plug has three pins, and wherein pin 18 is a cylindrical pin, and two other pin is the rectangle pin.The size and location of three pins are all corresponding with the size and the position of three jacks of safety socket.On cylindrical pin 18, have arc groove.

The course of work of the utility model safety socket and plug is as follows:

When the cylindrical pin 18 of safety plug is inserted among the jack K1 of safety socket, pin will be locked steel ball 3 earlier and will be pressed in the groove of jack housing 4, pin 18 continues to press down, because of hard contact 6 (7), 16 (17), metal column 10 are fixed on the insulator 5, after so pin 18 is run into metal column 10, with they together device depress.Because hard contact 6 and 16,

hard contact

7 and 17 communicate respectively, zero line and live wire in hard contact 9 and the 8 difference combination hubs, hard contact 15 and 14 is jointing holes K2 and K3 respectively, ground wire contact 13 ground connection, so when pin 18 was pressed onto, hard contact 6 and 16 was with hard contact 8 and 14 conductings,

hard contact

7 and 17 is with hard contact 9 and 15 conductings, three leads in the plug and three leads in the socket have just had electricity with regard to conducting on the plug like this.

When plug was inserted into, the locking steel ball 3 in the jack housing 4 snapped in the arc groove of pin 18 under the effect of locking spring 2, finishes the self-locking of plug, lock-screw 1 scalable coupling mechanism force.Have only when firmly plug outwards being pulled out from socket, will lock earlier after steel ball 3 is pressed in the jack housing 4, plug successfully could be pulled out from socket.

On guide finger 11,12, respectively overlap a spring, be used for making normally opened contact to throw off from closure state.

Claims

1. a safety socket mainly is made up of jack, shell (4), it is characterized in that: have three jacks, wherein jack K1 is a circular socket holes, and jack K2 and K3 are the rectangle jack; One insulator (5) is arranged below the shell (4), metal column (10) is housed, guide finger (11), (12) below the insulator (5); On the bottom surface of insulator (5), fixing several hard contacts (6), (7), (16), (17), it is identical also to be fixed with quantity on the socket bottom, and the position is hard contact (8), (9), (14), (15) one to one, wherein, hard contact (6) and (16), (7) and (17) communicate respectively, zero line and live wire in hard contact (9) and (8) difference combination hub; Hard contact (15) and (14) are jointing holes K2 and K3 respectively.

2. safety socket according to claim 1, it is characterized in that: in the circular socket holes K1 of shell (4), respectively have a groove on the relative position, a locking steel ball (3) respectively is housed in each groove, and each locking steel ball (3) all links to each other with lock-screw (1) with locking spring (2).

One kind with the corresponding safety plug of the described safety socket of claim 1, it is characterized in that: have three pins, wherein, pin (18) be a cylindrical pin, other two pins are the rectangle pin; The position of three pins and size all with the position of three jacks of safety socket with big or small corresponding.

4. safety plug according to claim 3 is characterized in that: have arc groove on cylindrical pin (18).