CN2552197Y - Automatic disconnecting safety plug - Google Patents

Abstract

The utility model provides an automatic breaking safeguard plug which relates to a household electric appliance safeguard device. The utility model overcomes the shortcomings of the prior art, can automatically monitor the electricity consuming condition of a power supply loop and the malfunction of a load loop. A reverse ejector is arranged between an upper insulated cover and a lower insulated cover. An ejecting rod, a spring, and a positioning pole are arranged in the shell of the reverse ejector; a blind hole is arranged on the ejecting rod, one end of the spring is connected with the blind hole on the ejecting rod, the other end of the spring is connected with a blind hole on the positioning pole. A guide slot and a brake slot are arranged on the shell, a releasing pole is connected with the blind hole on the ejecting rod, and the releasing pole is locked in the brake slot. The releasing pole fixes the ejecting rod in the guide slot in the shell, and the positioning pole is coupled on the other end of the shell firmly. A thermal effect piece, a thermosensitive material piece, and a terminal are connected in turn between the terminal and the power supply lead of the power supply wire, one end face of the thermal effect piece and the releasing pole face of the reverse ejector are connected alongside in the brake slot, and the other end face of the thermal effect piece is pressed on the thermosensitive material piece.

Description

Automatically safety plug cuts off the power supply

(1) technical field:

The utility model relates to a kind of household electrical appliances protective device, a kind of specifically safety plug.

(2) background technology:

Current electrical equipment is of a great variety; in the protective circuit of establishing also emerge in an endless stream, but often in some electrical equipment, when turn-to-turn short circuit occurring as power transformer; when plug and power supply lead wire inside often occur losing short circuit, just caused the deterioration consequence in the non-protection range of high-grade electrical equipment.

(3) summary of the invention:

The shortcoming that overcomes prior art of the present utility model provides the automatic outage safety plug of the automatic monitoring power supply of a kind of energy loop electricity consumption situation and load circuit fault.

Automatic outage safety plug of the present utility model, comprise insulating lid, following insulating lid, insert-connecting plate, power line, wherein go up in insulating lid and the following insulating lid and be provided with insert-connecting plate, power line, insert-connecting plate links to each other with power supply lead wire in the power line by terminal respectively, be provided with reverse ejector in last insulating lid and the following insulating lid, oppositely ejector is by shell, piston ejector ram, ejector piston, spring, reference column is formed, wherein be provided with piston ejector ram, ejector piston in the shell, spring, reference column, piston ejector ram, ejector piston is provided with blind hole, one end of spring is connected with the blind hole on the piston ejector ram, ejector piston, and the other end of spring is connected with blind hole on the reference column; Have gathering sill and breaker slot on the shell, the dropout post is connected with blind hole on the piston ejector ram, ejector piston, and the dropout post is stuck in the breaker slot, and the dropout post is with in the fixing gathering sill in the enclosure of piston ejector ram, ejector piston, and reference column tightly fits in the other end of shell; Be connected with thermal effect sheet, thermo-sensitive material sheet, terminal between the power supply lead wire of described terminal and described power line in turn, wherein an end face of thermal effect sheet abuts against the breaker slot place with the dropout cylinder of reverse ejector, and the other end of thermal effect sheet is crimped on the thermo-sensitive material sheet.

Safety plug of the present utility model; because plug inside is equipped with a reverse ejector that plug and supply socket are separated automatically; when electricity network superpressure, load overcurrent, line short generation; the automatic removal load voltage of its inner thermo-sensitive material sheet; reach automatic monitoring load faulty, the disconnected earlier first cover security personnel purpose of pressing the protection load.Because the thermal effect sheet is crimped on the thermo-sensitive material sheet, therefore, the thermal effect sheet absorbs the low-power consumption thermal source on the thermo-sensitive material sheet and expands, by the dropout post on the reverse ejector of thermal effect sheet expansion triggering, reverse ejector is ejected, plug breaks away from supply socket, reaches the second cover security personnel purpose that the utility model mechanization breaks away from supply socket fully.Its circuit is simple, designs simplification, and the power conversion conduction is reliable, can connect the utility model safety plug of different size model on the electrical appliance of different power consumption, realizes the fault of monitoring power supply loop and load circuit, automation outage security personnel's purpose.The utility model can launch out supply socket with under the electricity condition three seconds little power consumptions of time-delay back no-spark, can carry out the automation security personnel repeatedly for a long time.

(4) description of drawings:

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is an internal structure schematic diagram of the present utility model.

Fig. 3 is the exploded sketch of reverse ejector shown in Figure 2.

Fig. 4 is the schematic diagram of circuit theory of the present utility model.

(5) embodiment:

Below in conjunction with accompanying drawing the utility model is described in further detail.

As shown in the figure, a kind of automatic outage safety plug of the utility model, comprise insulating lid 1, following insulating lid 5, insert-connecting plate 3,8, power line 4, wherein go up in insulating lid 1 and the following insulating lid 5 and be provided with insert-connecting plate 3,8, power line 4, insert-connecting plate 3,8 respectively by terminal 9,30 with power line 4 in power supply lead wire A, B links to each other, be provided with reverse ejector 6 in last insulating lid 1 and the following insulating lid 5, oppositely ejector 6 is by shell 6A, piston ejector ram, ejector piston 22, spring 12, reference column 28 is formed, wherein be provided with piston ejector ram, ejector piston 22 in the shell 6A, spring 12, reference column 28, piston ejector ram, ejector piston 22 is provided with blind hole 23,25, one end of spring 12 is connected with blind hole 23 on the piston ejector ram, ejector piston 22, and the other end of spring 12 is connected with blind hole 29 on the reference column 28; Have gathering sill 18 and breaker slot 19 on the shell 6A, dropout post 15 is connected with blind hole 25 on the piston ejector ram, ejector piston 22, dropout post 15 is stuck in the breaker slot 19, and dropout post 15 is fixed on piston ejector ram, ejector piston 22 in the gathering sill 18 in the shell 6A, and reference column 28 tightly fits in the other end of shell 6A; Be connected with thermal effect sheet 10, thermo-sensitive material sheet 17, terminal 11 between the power supply lead wire B of terminal 30 and power line 4 in turn, wherein an end face of thermal effect sheet 10 abuts against breaker slot 19 places with dropout post 15 faces of reverse ejector 6, and the other end of thermal effect sheet 10 is crimped on the thermo-sensitive material sheet 17.

Among Fig. 3, after oppositely spring 12 two ends in the ejector 6 connect with piston ejector ram, ejector piston 22 and reference column 28 respectively, in dropout post 15 being packed into blind hole 25 on the piston ejector ram, ejector piston 22 from gathering sill 18, adjust reference column 28, after making spring 12 rotations 45 degree, reference column 28 is tightly fitted in the other end of shell 6A, when plug insertion socket, be positioned at insert-connecting plate 3, the piston ejector ram, ejector piston 22 of 8 centers withstands on the median plane of socket, automatically pin and make dropout post 15 walk to breaker slot 19 backs along gathering sill 18, adjust the expansion orientation of the thermal effect sheet 10 of circuit aspect then, dropout post 15 faces in its plane and the breaker slot 19 are abutted against, have so just formed cold conditions thermal effect sheet 10 15 relations that are connected of dropout post with reverse ejector 6.When circuit breaks down, thermo-sensitive material sheet 17 passes to thermal effect sheet 10 with thermal source, thermal effect sheet 10 triggers dropout post 15, the helical angle of spring 12 is changed about 1 degree, with piston ejector ram, ejector piston 22 under the tension force effect of spring 12, penetrate along launching the hole, piston ejector ram, ejector piston 22 will oppositely eject plug like this, makes its whole disengaging supply socket.

Fig. 4 shows circuit theory of the present utility model, open K switch 1, short trouble appears losing in the artificial plug-in power pack lead-in wire inside of making, because the increase of loop current, the internal resistance surge of thermo-sensitive material sheet 17, temperature rises rapidly, thermo-sensitive material sheet 17 two ends will instantaneously form the high voltage of 220V, like this, voltage in the load has just disappeared, simultaneously, thermo-sensitive material sheet 17 is also in time transformed to the little power consumption of high resistant by the big power consumption of low-resistance with regard to instantaneous, the instantaneous terminal voltage that fault is caused point, big electric current removal has served as main load and himself involve in the loop, thermo-sensitive material sheet 17 can be adjusted the electric parameter of self automatically, and constantly the heat release of self is come out, also just electric energy is converted into thermal energy conduction and gives on the thermal effect sheet 10 that is crimped on himself, after thermal effect sheet 10 is accepted thermal source, will further expand and trigger dropout post 15 on the reverse ejector 6, piston ejector ram, ejector piston 22 is penetrated, and piston ejector ram, ejector piston 22 will oppositely eject plug like this, makes the whole disengaging of plug supply socket.The utility model comes to this, and changing and shift loop fault with same loop resistance value is self, then is under little power consumption state, allows thermal effect sheet 10 mechanical types trigger dropout post 15 on the reverse ejector 6, makes plug break away from supply socket.When closing K1; during again with plug insertion socket; piston ejector ram, ejector piston 22 relies on the thrust of inserting plugs and in the shell 6A of the reverse ejector 6 of shrinking back; open K switch 2 make power transformer T1 circles to or during shorted-turn fault; because T1 level of transformer is short circuit by the people; and electric current increases; cause that electric current increases between T1 primary coil A1 and B1; cause the internal resistance and the temperature of thermo-sensitive material sheet 17 to rise; conversely the internal resistance of thermo-sensitive material sheet 17 rise also just force transformer T1 primary current from large to small; the participation loop of while thermo-sensitive material sheet 17; to cause voltage between A1 and B1 to lose entirely that (principle is as having cut off a power line; make short dot be a conductor; at thermo-sensitive material sheet 17 two ends; just the same like two the end of a thread cutting off; be 220V); the short circuit of transformer is bumped fiery fault and also just can't be worsened because of losing voltage again like this; thermal effect sheet 10 reexpanded and triggered dropout post 15 on the reverse ejector 6 because of absorbing thermal source on the thermo-sensitive material sheet 17 equally this moment, so that reached the purpose of the utility model protection load circuit.When closing K1, K2, once more with plug insertion socket, set up Rfe and change load power consumption, during the little short circuit current fault of making that electrical appliance (as colour TV, computer etc.) electronic component or integrated circuit component puncture, because the 30W plug inside that the utility model is demarcated is equipped with the cause of the thermo-sensitive material sheet 17 of corresponding power, so this plug also can break away from supply socket automatically.When electricity network voltage surpasses 270V or the little electric current of load and changes, the internal resistance of the thermo-sensitive material sheet 17 of 30W plug inside all can be in time increases with the increase of load current, the former normal pressure drop in temperature-sensitive material piece 17 two ends is also with regard to the instantaneous 0.9-1.2V that surmounts relatively, internal resistance surge, temperature are risen rapidly automatically, and the severed thread end that is under the high blocking state is the same, also just forced the load current under the end resistance state to diminish so conversely, voltage loses to the greatest extent, and makes load be the thermo-sensitive material sheet 17 two ends power supply of a short-circuit conductor under high-impedance state; Because thermo-sensitive material sheet 17 involves in the loop and has served as main load; so electrical appliance load both end voltage will inevitably be lost entirely, relatively integrated circuit fault decompression and power makes zero can't worsen; finally implement to break away from supply socket, reach the purpose of further protective circuit by reverse ejector 6.If fault is not got rid of, during at this moment with plug insertion socket, the thermal source that has absorbed on the thermo-sensitive material sheet 17 owing to thermal effect sheet 10 expands, shored dropout post 15, cause dropout post 15 can't be locked in the breaker slot 19, after loosing one's grip, plug still can eject socket.

Temperature and internal resistance and load circuit electric current and all inversely proportional relation of voltage according to thermo-sensitive material sheet 17 reach automatic monitoring load faulty, the disconnected earlier first cover security personnel purpose of pressing the protection load.

Because thermal effect sheet 10 is crimped on the thermo-sensitive material sheet 17, therefore, thermal effect sheet 10 absorbs the low-power consumption thermal source on the thermo-sensitive material sheet 17 and expands, and triggers reverse ejector 6, reaches the second cover security personnel purpose that the utility model mechanization breaks away from supply socket fully.

If the parameter of the utility model thermo-sensitive material sheet 17 can be qualitative under high-tech is a normal component, the utility model also can be to the expansion of the explosion-proof technology field of intelligent plug and socket so.

Claims (1)

1, a kind of automatic outage safety plug, comprise insulating lid, following insulating lid, insert-connecting plate, power line, wherein go up in insulating lid and the following insulating lid and be provided with insert-connecting plate, power line, insert-connecting plate links to each other with power supply lead wire in the power line by terminal respectively, it is characterized in that: go up in insulating lid (1) and the following insulating lid (5) and be provided with reverse ejector (6), oppositely ejector (6) is by shell (6A), piston ejector ram, ejector piston (22), spring (12), reference column (28) is formed, wherein be provided with piston ejector ram, ejector piston (22) in the shell (6A), spring (12), reference column (28), piston ejector ram, ejector piston (22) is provided with blind hole (23,25), one end of spring (12) is connected with blind hole (23) on the piston ejector ram, ejector piston (22), and the other end of spring (12) is connected with blind hole (29) on the reference column (28); Have gathering sill (18) and breaker slot (19) on the shell (6A), dropout post (15) is connected with blind hole (25) on the piston ejector ram, ejector piston (22), dropout post (15) is stuck in the breaker slot (19), dropout post (15) is fixed on piston ejector ram, ejector piston (22) in the interior gathering sill (18) of shell (6A), and reference column (28) tightly fits in the other end of shell (6A); Be connected with thermal effect sheet (10), thermo-sensitive material sheet (17), terminal (11) between the power supply lead wire (B) of described terminal (30) and described power line (4) in turn, wherein an end face of thermal effect sheet (10) abuts against breaker slot (19) with reverse dropout post (15) face of ejector (6) and locates, and the other end of thermal effect sheet (10) is crimped on the thermo-sensitive material sheet (17).

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