CN2562439Y - Electric leakage protective plug - Google Patents

Abstract

A plug with electricity leakage protection function is provided, which belongs to a low-voltage electric appliance and comprises an end cover, a pedestal 27, a test mechanism, an indicating mechanism, a circuit board 59, a contactor mechanism, a resetting mechanism, a switch-on tripping mechanism, and a plug mechanism. The switch-on tripping mechanism and the plug mechanism are respectively arranged on the two ends of the pedestal 27. The end cover comprises a button cover 2 and a wiring chamber cover 15, which respectively correspond to the two ends of the pedestal 27. One end of the button cover 2 is provided with an isolating plate 8 which is engaged with the wall of a seat chamber 62 of the plug mechanism in the center of the pedestal 27, so as to separate the switch-on tripping mechanism from the plug mechanism. The utility model has advantages of reasonable structure, small size, and no influence on the switch-on tripping mechanism even the plug of the plug mechanism is heated.

Description

Leakage protecting plug

The utility model relates to a kind of leakage protecting plug, belongs to low-voltage electrical apparatus.

Unit earth leakage protective problem for household electrical appliance is more and more paid attention to by people; more especially the earth leakage protective of the high household electrical appliance of the frequency of utilization such as electric heater, hair dryer, electric fan, warmer, microwave oven, photoelectricity dual-purpose solar water heater seems even more important; because both be related to the normal use of electrical appliance, be related to personal safety again.At present; solution comprises the earth leakage protective of the above-mentioned household electrical appliance of mentioning; often all be that residual current circuit breaker is installed in power supply in the electric mounting box between the line; in case electric leakage appears in a certain electrical appliance; fast and automatically cut off the electricity supply by residual current circuit breaker, guarantee electrical appliance and personal safety.Deficiency is: because the protection of this leakage, breaking is at whole subscriber line circuit; therefore; when electric leakage appears in a certain electrical appliance, just whole user's power circuit can be cut off, have influence on the continuation operate as normal of other all electrical appliances that still should normally use.In view of this; just produced the earth leakage protective socket that a kind of socket combines with earth leakage protective device; it is socket simply to be connected in series with circuit with residual current circuit breaker be placed in the mounting box; though can play the effect of unit earth leakage protective; be terminal protection, can not influence the normal use of other electrical equipment, but do not have organic annexation because of its test mechanism, indicating mechanism, contact mechanism, circuit board, combined floodgate tripping mechanism etc.; so bulky, as to be used popularity restriction.The earth leakage protective socket that a kind of patent applied for is arranged; its application number is 02262454.6; owing to can solve above-mentioned defective in one's power; therefore it is moved on the plug; then can yet be regarded as is a kind of organic reference, but because plug oneself requirement volume is little, more exquisite to each position component and tie point each other thereof; thereby be difficult to take over totally, especially: even must solve that the latch of plug mechanism in use is heated and the problem that can not influence combined floodgate tripping mechanism operate as normal.

The purpose of this utility model be to provide a kind of with rational structure be provided with come littleization overall volume, the combined floodgate tripping mechanism affected leakage protecting plug that can not be heated because of the latch of plug mechanism.

The purpose of this utility model reaches like this, a kind of leakage protecting plug, be made up of end cap, base 27, test mechanism, indicating mechanism, circuit board 59, contact mechanism, resetting device, combined floodgate tripping mechanism, plug mechanism, described combined floodgate tripping mechanism and plug mechanism are arranged at the two ends of base 27 respectively; Described end cap is made of button cover 2, wire connection cavity lid 15, they correspond respectively to the two ends of base 27, end end in button cover 2 is formed with a division board 8, this division board 8 matches with the chamber wall of the seat cavity 62 of the plug mechanism that is formed at base 27 middle parts, and combined floodgate tripping mechanism and plug mechanism are isolated.

The utility model is owing to be divided into combined floodgate tripping mechanism and plug mechanism at two ends of base 27, and by the division board on the button cover 28 they are separated, thus have rational in infrastructure, volume is little, still can not constitute the advantage of influence when the latch of plug mechanism is heated to the combined floodgate tripping mechanism.

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

What accompanying drawing disclosed is the utility model assembling assumption diagram.

The two ends, bottom of division board 8 of the present utility model also are provided with a pair of junction block spacing block 5, and the centre of bottom is provided with couple of conductor hole spacing block 10, and junction block spacing block 5 and wire guide spacing block 10 match with the spacing block groove 39 of chamber wall two sides of the seat cavity 62 of plug mechanism and middle spacing block groove 23 respectively.Inlay respectively by a pair of junction block spacing block 5 and couple of conductor hole spacing block 10 and to place spacing block groove 39,23, then reach separation, thereby constitute further improvement of the utility model combined floodgate tripping mechanism and plug mechanism.

The test button of test mechanism of the present utility model is corresponding to the test button hole 64 that is preset on the button cover 2, and protected by test button protective cover 1 cover, and test mechanism is connected with circuit board 59 with the combined floodgate tripping mechanism by circuit respectively.

Indicating mechanism of the present utility model has a light-emitting diode, and this light-emitting diode is connected with circuit board 59 by circuit, but also corresponding to the luminous second tube sheet hole 4 that is preset on the button cover 2.

Circuit board 59 of the present utility model is fixed on the base 27, and is protected by button cover 2 lids, and it is connected with the combined floodgate tripping mechanism by circuit.

Contact mechanism of the present utility model is made of a pair of moving contact 12,47 and a pair of fixed contact 14,49, a pair of moving contact 12,47 respectively is screwed on the moving contact holder 44 of base 27 by its base portion, and a pair of fixed contact 14,49 then is separately fixed on the fixed contact holder 21,40 of base 27 by screw.The contact of each tool projection on a pair of moving contact 12,47 and a pair of fixed contact 14,49, the contact on a pair of moving contact 12,47 is keeping corresponding relation with contact on a pair of fixed contact 14,49.Brace 13 on a pair of fixed contact 14,49 is powered to circuit board 59 in order to be connected to circuit board 59 by circuit.

Resetting device of the present utility model is made of spring 6, movable block 65, spring base 7, reset button 61, draw-in groove 60, spring 6 is nested with on movable block 65, its lower end is supported on the spring base 7, spring base 7 is fixed on the circuit board 59, spring 6 upper ends are supported on the reset button 61, reset button 61 is fixed on movable block 65 tops, and be placed in the pre-reset button hole 63 on button cover 2, and adding reset button protective cover 3 is covered and is protected, draw-in groove 60 is opened in the bottom of movable block 65, blocks mutually with the combined floodgate tripping mechanism and joins.

Combined floodgate tripping mechanism of the present utility model is by solenoid 56, yoke 55, spring 54, armature 53, snap close 52, transverse arm seat 50, transverse arm 48, current transformer 20 constitutes, solenoid 56 places in the yoke 55, its lead-out wire 57 by circuit respectively with contact mechanism, circuit board 59 connects, spring 54 is set on the armature 53, one end of armature 53 is on solenoid 56, end is connected with snap close 52 tops by loose slot 58 in addition, the bottom of snap close 52 is formed with a kink, constitute locking plate 51 by this kink, locking plate 51 both can be integrally formed with transverse arm seat 50, also can be stable on the transverse arm seat 50 separately, and locking plate 51 matches with the draw-in groove 60 of movable block 65 bottoms of resetting device, realizes the connection of combined floodgate tripping mechanism and resetting device by this.Be formed with a movable block chamber 9 for the movable block 65 that holds to go into resetting device on transverse arm seat 50, transverse arm 48 is stretched to two ends symmetrically by the bottom of transverse arm seat 50 and forms, and can upper and lowerly place movably on the transverse arm seat chamber 42 that is formed in advance on the base 27.Current transformer 20 places in the current transformer seat chamber 25 of base 27, and its lead-out wire 17 is connected with contact mechanism and circuit board 59 with test mechanism respectively.

Plug mechanism of the present utility model is by base plate 29, a pair of power plug 32, one ground wire latch 33, plug housing 30, power line binding post 18, earth terminal 28, binding post chamber 22,24,38 constitute, base plate 29 is fixedly arranged in the bottom of base 27, power plug 32 and ground wire latch 33 are separately fixed on the corresponding plug housing 30, a pair of power line binding post 18 places corresponding binding post chamber 22, in 38, earth terminal 28 is as in the binding post chamber 24, each binding post chamber 22,24,38 are separated by a seat cavity 62 that is formed on base 27 middle parts in advance, and seat also is separated out the power line hole 35 that a pair of confession is used to pass through power line on the cavity 62.A pair of power plug seat 30 by a pair of power supply line 19,34 through a pair of power line hole 35, and string draw to be connected on a pair of moving contact 12,47 through current transformer 20 and constitute the loop; Power line binding post 18, earth terminal 28 then are connected with them by an end of circumscripted power line 26, and are rotated with screw 16, and the other end of circumscripted power line 26 is connected on the corresponding electrical appliance.

The utility model on yoke 56, transverse arm 48, current transformer 20 are placed in yoke seat chamber 43, transverse arm seat chamber 42, current transformer seat chamber 25 after, yoke 56 is just fixed by yoke holder 45, transverse arm 48 then can move up and down by 42 formed transverse arm grooves 41 along transverse arm seat chamber, and 20 of current transformers are in the build-in state.In addition, place on the movable block chamber 9 of combined floodgate tripping mechanism when the movable block 65 of resetting device after, locking plate 51 blocks with draw-in groove 60 just and joins.

Button cover 2 of the present utility model is fixing with base 27 by hold-down screw 37 by default spiral shell journey 11 thereon, and with cap 36 hold-down screw 37 lids is covered; Equally, wire connection cavity lid 15 is fixing with base 27 by screw 31.

When electric leakage appears in binding electrical appliance of the present utility model, when perhaps pressing leakage current of implementation simulation by the test button, because current transformer 20 is a zero sequence current mutual inductor, therefore, current transformer 20 is just exported a signal, after being installed on the electric elements processing and amplification on the circuit board 59, make the loop conducting of solenoid 56, produce the suction-combining force, this moment is under the effect of armature 53, drive snap close 52, locking plate 51 is deviate from draw-in groove 60, on under the effect of spring 6, move, therefore, original transverse arm seat 50 of being guided and supported by movable block 65 just falls to transverse arm groove 41 belows together with transverse arm 48, again because original a pair of moving contact 12,47 by transverse arm 48 supports respectively, to guarantee contact and a pair of fixed contact 14 on it, contact on 49 contacts, but whereabouts along with transverse arm 48, a pair of moving contact 12,47 have just lost support, under the elastic reaction of self, its contact and a pair of fixed contact 14, contact separation on 49 and cutting off the power supply, can get a glimpse of light-emitting diode by hole of light emitting diode 4 and extinguish this moment.After display removes the leak current fault reason, as long as press reset button 61 with hand, movable block 65 is moved down under the elastic force that overcomes spring 6, in moving process, the draw-in groove 60 on the movable block 65 returns to once more just that both block the state of joining mutually with locking plate 51.According to above-mentioned contrary principles, the contact on a pair of moving contact 12,47 just with a pair of fixed contact 14,49 on the contact contact and switch on, and it is glittering to observe light-emitting diode in the hole of light emitting diode 4.

Claims (2)

1, a kind of leakage protecting plug, form by end cap, base (27), test mechanism, indicating mechanism, circuit board (59), contact mechanism, resetting device, combined floodgate tripping mechanism, plug mechanism, it is characterized in that described combined floodgate tripping mechanism and plug mechanism are arranged at the two ends of base (27) respectively; Described end cap is made of button cover (2), wire connection cavity lid (15), they correspond respectively to the two ends of base (27), end end in button cover (2) is formed with a division board (8), this division board (8) matches with the chamber wall of the seat cavity (62) of the plug mechanism that is formed at base (27) middle part, and combined floodgate tripping mechanism and plug mechanism are isolated.

2, leakage protecting plug according to claim 1; the two ends, bottom that it is characterized in that division board (8) also are provided with a pair of junction block spacing block (5); and the centre of bottom is provided with couple of conductor hole spacing block (10), and junction block spacing block (5) and wire guide spacing block (10) match with the spacing block groove (39) of chamber wall two sides of the seat cavity (62) of plug mechanism and middle spacing block groove (23) respectively.