CN2534694Y

CN2534694Y - Auxiliary type safety plug & socket

Info

Publication number: CN2534694Y
Application number: CN 01257138
Authority: CN
Inventors: 王良意
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-10-10
Filing date: 2001-10-10
Publication date: 2003-02-05
Anticipated expiration: 2011-10-10

Abstract

The utility model relates to a safety plug and a socket matching with each other. Based on the prior plug and socket art, an intermediate relay (10), which is drawn to act by a strong permanent magnet (3), is arranged in an insulated shell of the socket. The power (L, N) is led to a static contact (6, 6') of the socket via a normal-opening node (9) of the intermediate relay. In the case of no power supply, the static contact (6, 6') is not electrified. When the matching plug (1), on which the strong permanent magnet (3) is embedded on the insulated shell, is inserted into the socket, the normal-opening node (9) of the intermediate relay (10) is drawn to close, and the power (L, N) is led to the static contact (6, 6') of the socket via the normal-opening contact (9), the normal power supply to an electric appliance (13) is completed. When the electric appliance stop using the power, the plug is pulled out, the drawing force of the permanent magnet is eliminated, two normal-opening nodes (9) are disconnected under the action of the spring force, and a jack loses the power. As the intermediate relay is used, the case that a child inserts a metal conductor into the jack by mistake to cause an electric shock is avoided, and the technical safety defect that the prior plug and the prior socket do not contact well with each other, gives out heat, and so on is settled. The use procedure of the utility mode is completely the same with the procedure of the prior plug and the prior socket.

Description

Supporting formula safety plug socket

Affiliated technical field

The utility model relates to a kind of improved plug, socket, particularly in order to prevent that children mistake from inserting metal, conductor socket aperture and getting an electric shock, and fill up existing plug, socket on performance and safety technological deficiency and a kind of supporting formula safety plug socket that designs.

Background technology

Existing plugs and sockets series is various, and its basic structure only is made up of insulation crust and copper contact, and there are the following problems though its structure is simple:

(1), do not prevent that child mistake from inserting metal, conductor in the socket aperture and the robust techniques measure of getting an electric shock.

(2), there are the technological deficiency on following performance and the safety in existing plug, socket:

A, loose contact, plug are easily become flexible even are come off and cause the contact heating, quicken ageing of insulation or interruption of power supply.

B, plug insert or when extracting socket because of manual operation, the instantaneous velocity of its circuit turn-on or cut-out is too slow, so (during particularly big load) makes the people comparatively terrified often at socket aperture generation spark (electric arc) like this when plug inserts or extracts; Simultaneously, the socket aperture is often by electric arc calcination bad (blackening of common jack mouth, coking), and makes plug, the dynamic and static contact of socket (the following contact that all claims plug is " moving contact ", and the contact of socket is " fixed contact ") severe oxidation, contact resistance strengthens, the contact heating, so circulation, the lighter quickens ageing of insulation, the high heat of weight person's contact is rubescent, insulation is burnt, and the lead fusing causes short circuit even initiation fire.(this for the major reason of electrical fire)

C, do not stop the separated peace electricity consumption of people on socket: do not use as will be not directly inserting socket with the power line of the electrical appliance of plug,

Connector danger like this, electrical appliance loses ground protection during use.(above-mentioned two particularly the 1st still unresolved abroad)

Summary of the invention

The utility model purpose of design provides supporting formula safety plug, socket, to solve following technical problem:

(1), the protection children's safety, prevent that children mistake from inserting metal or conductor in the socket aperture and get an electric shock.

(2), improve the performance of existing plug, the aforementioned existence of socket and the technological deficiency on the safety.The technical scheme that its technical problem that solves the utility model adopts:

(1), on existing plug, jack technology basis, one " auxiliary relay " by strong permanent magnetic body drawing-in motion is set in the insulation crust of socket, external power supply is often opening on the fixed contact that node causes socket through " auxiliary relay ", under the situation of normal not electricity consumption, make the socket fixed contact not charged.

(2), " a column type strong permanent magnetic body " is set on supporting plug insulation crust, during electricity consumption when " electrical appliance " that have " supporting plug " inserts socket, under the traction of strong permanent magnetic body, auxiliary relay often leaves the node closure in the socket, power supply is often opened node and is caused the socket fixed contact, powers to " electrical appliance ".

(3), fuse and indicator light are set in socket.The beneficial effects of the utility model are,

(1), can prevent above-mentioned child's electric shock and people's separated peace electricity consumption.

(2), because the magnetic force adhesive of supporting plug and socket has changed existing plug and has depended merely on the method that the elastic force of socket fixed contact is clamped plug, make plug, socket in conjunction with stable, plug can loose or dislocation, has improved plugging capability, has improved the reliability of power supply.

(3), owing to used " auxiliary relay " scheme, realized that plug, socket cooperate with the order of relay normally open node " break-make ", the contact of plug, socket contacts earlier when promptly sending electricity, and auxiliary relay often open closure behind the node; During outage, often open node and disconnect earlier, separate behind plug, the receptacle connector.Therefore plug, socket all are uncharged in the moment of circuit " break-make ".The final conducting of circuit and cut-out all are to be finished by kicker magnet and the spring controlled node of often opening, and therefore, the break-make instantaneous velocity is exceedingly fast.(order cooperates, and only needs the attraction distance of design magnetic force and the cooperation of plug length to get final product)

(4), owing to used auxiliary relay, realized quick-break and multibreak battle arc extinguishing, add that often opening node adopts the electrical equipment alloy contact, used order break-make method simultaneously, protected the contact of plug, socket.Like this; improved the arc extinguishing ability greatly; prevent contact heating and ageing of insulation; prolonged useful life of plug, socket; and connecting and disconnecting of the circuit moment all carries out in socket; the operator is also felt safe, owing to being provided with fuse and indicator light integrity, make electricity consumption more safe and reliable simultaneously as short-circuit protection and supervision power supply and grafting situation.

Description of drawings:

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

Accompanying drawing 1 is supporting formula safety plug, socket schematic diagram

Accompanying drawing 2 is supporting formula safety plug, socket circuit schematic diagram

1. supporting plugs among the figure, 2. complementary socket, 3. permanent magnet, 4. draw bar, 4 ' armature, 4 " insulating bar, 5. plug two moving contacts; the 6. right fixed contact of socket, 6 ' socket left side fixed contact, 7. spring; 8. indicator light are 9. often opened node (a. often opens the node fixed contact, and b. often opens the node moving contact); 10. auxiliary relay, 10 ' auxiliary relay framework, 11. fuses; 12. plug insulation crusts, 13. electrical appliances, 14. socket insulation crusts.

Embodiment

Execution mode of the present utility model is in conjunction with the accompanying drawings 1, accompanying drawing 2 is further described below:

1, in the drawings, power line (the L of socket (2), N) directly be not connected on two fixed contacts (6 of socket, 6 ') on, be often to open two fixed contacts (6 that node (9) is connected to socket (2) by two of auxiliary relay in the socket (10), 6 ') on, two normal opened contacts (9) are not closed, the fixed contact (6 of socket, 6 ') on be uncharged, and two closures of often opening node (9) are when inserting socket (2) by " supporting plug " (1) (attaching plug of electrical appliance), the tractive effort of the strong permanent magnetic body (3) that plug (1) upward is provided with acts on two and often opens on the draw bar (4) of node, overcome the resistance of draw bar (4) upper spring (7), make two often to open node (9) closure.(L N) often opens node (9) and delivers to socket fixed contact (6,6 ') external power supply, gives electrical appliance (13) by moving contact (5) power supply of supporting plug (1) again.The electrical appliance (13) that is connected to supporting plug (1) need not increase any operating procedure insertion socket (2) and get final product normal electricity consumption.Electrical appliance (13) when stopping electricity consumption being extracted plug (1), and then magnetic tractive effort is eliminated, and two often open node (9) disconnects under the effect of spring (7) power, and socket (2) recovers the state before the electricity consumption, jack dead electricity.Therefore, generally speaking, socket aperture is uncharged.

2, above-mentioned auxiliary relay (10) is often opened node (9), spring (7) and permanent magnetism power draw bar (4) by two pairs and auxiliary relay framework (10 ') is formed.(form by 4 ") by armature (4 ') and insulating bar for draw bar (4).Its armature is electrical pure iron.The dynamic and static contact of often opening node (9) is the electrical equipment alloy contact.

3, the last strong permanent magnetic body (4) that is provided with of supporting plug (1) forms for neodymium iron boron or Rare-Earth Cobalt smelting system, it is shaped as small cylinder, its size is decided (because of watt level determines often to open node size and spring force) by socket power, general φ is 8-10mm, high h is 3-5mm, and the draw bar position is corresponding in position on plug and the socket.

4, socket is provided with indicator light (8), fuse (11), and all be connected on the leading-out terminal that node (9) often left by auxiliary relay, and indicator light both can monitor power status like this, can monitor that again auxiliary relay often leaves the break-make situation of node (9).

Claims

1, a kind of supporting formula safety plug socket; Socket (2) is by insulation crust (14), auxiliary relay (10), and fixed contact (6,6 '), fuse (11), indicator light (8) is formed; Plug (1) is by insulation crust (12), strong permanent magnetic body (3), and moving contact (5) is formed, and it is characterized in that:

A, auxiliary relay (10) are often opened the fixed contact (a) of node (9) and are had the draw bar (4) of often opening node moving contact (b) by two couple on Insulating frame (10 ') and the framework and form, often open node (9) end of incoming cables and power supply (L, N) be electrically connected, its leading-out terminal that is connected with L is connected with the right fixed contact of socket (6) through fuse (11), the leading-out terminal that is connected with N, directly be electrically connected with socket left side fixed contact (6 '), indicator light (8) cross-over connection is between two fixed contacts (6,6 ');

B, plug (1) go up strong permanent magnetic body (3) and are embedded on the insulation crust (12) of plug (1), and with moving contact (5) homonymy, draw bar (4) position of the auxiliary relay (10) that its position and socket are interior is corresponding.

2, according to the described supporting formula safety plug socket of claim 1, it is characterized in that: (often open node moving contact (b) and form by two on 4 ") and the insulating bar by armature (4 ') and insulating bar for the permanent magnet draw bar (4) of auxiliary relay (10).

3, according to the described supporting formula safety plug socket of claim 2, it is characterized in that: armature (4 ') material is an electrical pure iron, and the contact material of often opening node (9) is the electrical equipment alloy.

4, supporting formula safety plug socket according to claim 1, it is characterized in that: the material of the strong permanent magnetic body (3) of plug (1) is the small cylinder that neodymium iron boron or the smelting of Rare-Earth Cobalt dusty material are made, and its Φ is 8-10mm, and high h is 3-5mm.