CN2140571Y

CN2140571Y - Safety socket

Info

Publication number: CN2140571Y
Application number: CN 92242628
Authority: CN
Inventors: 程文鹏
Original assignee: SHANGHAI METALLURGY CONSTRUCTION CO
Current assignee: SHANGHAI METALLURGY CONSTRUCTION CO
Priority date: 1992-12-03
Filing date: 1992-12-03
Publication date: 1993-08-18
Anticipated expiration: 2002-12-03

Abstract

The utility model relates to a three-hole type and two-hole type safety socket, which comprises a cover casing 1, an input terminal 2, a base 3, contact pieces 4, and two switches which are composed of active contact pieces 5 and stable contact pieces 7, wherein, the two switches are respectively connected in series between the input terminal 2 and the contact pieces 4. When a conductive object is mistakenly inserted in the holes of the safety socket, an electric shock accident can not occur.

Description

Safety socket

A kind of safety socket, the utility model are applicable to that the power supply of low-voltage electrical installation connects.

Gong Ying socket just can directly touch charged contact from socket aperture in the market, thereby will cause electric shock accidents when conductive body misplugs in the hand-hole, especially concerning the child, plays because of ignorant and to cause the electric shock tragedy to happen occasionally.

The purpose of this utility model is exactly to design a kind of safe socket, also is conductive body when mispluging into socket aperture (as long as not inserting socket aperture simultaneously together), just can not cause electric shock accidents.

Measure of the present utility model is one switch of respectively connecting between two groups of input terminals of former socket and socket contact sheet.

Now in conjunction with the accompanying drawings the utility model is illustrated.

Accompanying drawing 1 is three-port type the utility model external form schematic diagram, and 1 is case among the figure,

Accompanying drawing 2 is for removing the three-port type the utility model schematic diagram behind the

case

1, and 2 is input terminal among the figure, and 3 is base, and 4 is former socket contact sheet, and 5 is movable contact spring, and 6 is the earth electrode contact, and 7 is fixed touching plate, and 8 is movable push bar, and 9 is the earth electrode terminal,

Accompanying drawing 3 is the A-A profile of accompanying drawing 2,

Accompanying drawing 4 is two cellular type the utility model profile schematic diagrames,

Accompanying drawing 5 is for removing two cellular type the utility model schematic diagrames behind the

case

1, and 10 is slide damper among the figure, and 11 is spring.

Accompanying drawing 6 is A-A profiles of accompanying drawing 4,

Accompanying drawing 7 is structure charts of case 1,

Accompanying drawing 8 is the circuit connection diagram of two cellular type safety sockets.

One switch of respectively connecting between two groups of input terminals 2 of the utility model in original Three-hole socket and the former socket contact sheet 4, the fixed touching plate 7 of switch connects with input terminal 2 usefulness leads, the movable contact spring 5 of switch connects with former socket contact sheet 4 usefulness leads, one end of pusher 8 contacts with movable contact spring 5, the other end connects with earth electrode contact 6, under no plug insertion situation, fixed touching plate 7 is off state with movable contact spring 5, in case insertion plug, earth electrode contact 6 just promotes movable push bar 8 to two limits, thereby movable contact spring 5 is contacted with fixed touching plate 7, cause plug and external power to be connected.When unpluging, the elasticity of mat movable contact spring 5 and automatically reseting makes switch recover off state, thereby any external conductive body inserts any jack (inserting simultaneously so long as not three jacks), just can not cause electric shock accidents.

This three-port type safety socket is except including case 1, input terminal 2, base 3, contact 4, earth electrode contact 6, beyond the earth electrode terminal 9, do not include two switch and movable push bars of being made up of movable contact spring 5 and fixed touching plate 78, said two respectively are connected between input terminal 2 and the contact 4, the fixed touching plate 7 that also is switch connects with input terminal 2 electrical equipment, the movable contact spring 5 of switch connects with contact 4 electrical equipment, and an end of pusher 8 contacts with movable contact spring 5, and the other end connects with earth electrode contact 6, under no plug insertion situation, switch is off state, in case insert plug, earth electrode contact 6 just promotes movable push bar 8 to two limits, make switch closure, thereby make plug connect external power.

For two cellular type the utility model, equally, between two groups of input terminals 2 and contact 4, respectively be in series with one switch, the fixed touching plate 7 of switch connects with input terminal 2 usefulness leads, the movable contact spring 5 of switch carries out the interconnection (see figure 6) with the contact 4 usefulness leads in another hole, also promptly being contained in the movable contact spring 5 usefulness leads of the 1st hole one row links to each other with contact 4 in second hole, and the movable contact spring 5 that is contained in second hole one row also links to each other with movable contact spring in first hole with lead, under no plug insertion situation, movable contact spring and fixed touching plate are off state, one end of movable contact spring 5 is pressed close to sideboard 10, and sideboard 10 is that mat spring 11 is fixed on the case 1, when plug insertion socket, baffle plate 10 with regard to stressed and pressuring spring 11 to lower slider, so just force movable contact spring 5 to contact with fixed touching plate 7, switch closure, this moment, plug was just connected external power, unplug, baffle plate 10 plays mat springs 11 and automatically resets, and movable contact spring 5 is mat elasticity and automatically reseting also, makes switch recover off state.

The position of slide damper 10 is blocked the former contact 4 in two holes just, baffle plate 10 is made an inclined plane shape towards the position of two jacks, being beneficial to plug inserts slightly firmly the time and promotes slide damper 10 to lower slider, if but insert because the sliding condition of slide damper 10 is deflection with other conductive body, so can not cause switch closure, though even when a hole is strayed into conductive body, cause movable contact spring 5 and fixed touching plate 7 electrical equipment conductings in this hole, but the movable contact spring 5 in this hole be with another hole in contact 4 carry out electrical equipment and be connected, so misplug fashionablely at conductive body, contact is can not cause electric shock accidents in this hole.

Two cellular type the utility model are except including case 1, input terminal 2, base 3, also include two switches of forming by movable contact spring 5 and fixed touching plate 7 outside the contact 4, slide damper 10 and spring 11, said two switches respectively are connected between input terminal 2 and the contact 4, the fixed touching plate 7 of switch is connected with input terminal 2, the movable contact spring 5 of switch is interconnection on electrical equipment with contact 4, promptly has movable contact spring 4 electrical equipment to connect in the movable contact spring 5 of first hole, one row and second hole, and the movable contact spring 5 that second hole one is listed as connects with the 1st hole contact 4 electrical equipment, under no plug situation, switch is off-state, and said movable plate washer is that mat spring 11 is fixed on the case 1, and an end of movable contact spring 5 is pressed close to sideboard 10, the position of sideboard 10 is blocked the former contact 4 in two holes just, fishplate bar 10 is made an inclined plane shape towards the position of two jacks, and when plug inserted, the stressed and pressuring spring of baffle plate 10 was to lower slider, force switch closure, unplug, baffle plate 10 mat springs 11 reset, and switch disconnects.

The utility model is safe in utilization, can not cause electric shock accidents because of external conductive body is strayed into jack.

Claims

1, a kind of three-port type safety socket, it includes case 1, input terminal 2, base 3, contact 4 is characterized in that, also includes two switch and movable push bars of being made up of movable contact spring 5 and fixed touching plate 78, said two switches respectively are connected between input terminal 2 and the contact 4, the fixed touching plate 7 that also is switch is connected with input terminal 2 usefulness leads, and the movable contact spring 5 of switch is connected with contact 4 usefulness leads, and an end of pusher 8 contacts with movable contact spring 5, the other end is connected with earth electrode contact 6, under no plug insertion situation, switch is off state, in case insert plug, earth electrode contact 6 just promotes movable push bar 8 to two limits, makes switch closure.

2, a kind of two cellular type safety sockets, it includes case 1, input terminal 2, base 3, contact 4, it is characterized in that also include two switches of being made up of movable contact spring 5 and fixed touching plate 7, said two switches respectively are connected between input terminal 2 and the contact 4, the fixed touching plate 7 of switch is connected with input terminal 2 usefulness leads, the movable contact spring 5 of switch and contact 4 lead interconnection, promptly the movable contact spring 5 of first hole, one row is connected with contact 4 usefulness leads in second hole, and the movable contact spring 5 that second hole one is listed as is connected with the contact 4 usefulness leads in first hole, under the situation that no plug head inserts, switch is off state, and said movable plate washer 10 is that mat spring 11 is fixed on the case 1, and an end of movable contact spring 5 is pressed close to movable plate washer 10, the home position of sideboard 10 is blocked two hole contacts 4 just, baffle plate 10 is made an inclined plane shape towards the position of two jacks, and when plug inserted, the stressed and pressuring spring 11 of baffle plate 10 was to lower slider, force switch closure, unplug, baffle plate 10 mat springs 11 reset, and switch opens circuit.