CN2932735Y - Impact-type leakage protected plug - Google Patents

Abstract

The utility model discloses an impact-typed electric-leakage protective male plug. The utility model is based on the conventional pull-typed electric-leakage protective male plug, which changes the pull-typed structure of the double breakaway switch in which an iron core pulling lock is used to cut off the switch into an impacting-typed structure in which an iron core impacting lock is used to cut off the switch. That is to say, a front frame of a locking hole of the front portion of the lock is inversely inserted into a locking groove of a reset button, and the rear portion of the lock is separated from the front end of the iron core. And a locking spring is correspondingly provided. When the iron core moves into a late period, the lock is impacted by an impact force which is large enough, facilitating the front frame of the locking hole to separate from the locking groove in a fast speed. The utility model has the advantages of high sensitivity, high disconnecting speed, and low action current of the magnet coil. The utility model is an upgrading product for conventional power male plug and suitable to be extensively used in the power male plug of the power panel and the household electrical appliances such as air-conditioning, electric water heater and refrigerator.

Description

The impacting type leakage protecting plug

Technical field

The utility model relates to a kind of attaching plug, and particularly a kind of attaching plug with creepage protection function that is widely used on the household electrical appliance such as air-conditioning, TV belongs to electric elements.

Background technology

Universal day by day along with household electrical appliance, the safe in utilization of household electrical appliance is subject to people's attention day by day.The requirement of some country, household electrical appliance must be installed the attaching plug with creepage protection function, the family fire that causes because of electric leakage to prevent.A kind of attaching plug with traditional creepage protection function is arranged; its structure comprises housing; the live wire inserted sheet; the center line inserted sheet; the ground wire inserted sheet; leakage protection circuit; double-break switch and output cable; one way switch of described double-break switch is serially connected between live wire inserted sheet and the cable live wire; another way switch is serially connected between center line inserted sheet and the cable center line; the drive coil of double-break switch is connected with the output of leakage protection circuit; the structure of double-break switch comprises two fixed contacts and two moving contacts; be provided with the reset button of lock buckling groove; be provided with the button cavities of carrying the arm groove; be provided with two releases of carrying arm and vertical button hole and horizontal lock buckling groove; be provided with the snap close of bonnet lock hole; button spring; solenoid; iron core and iron core spring; release is contained in the button cavities; release two carry arm and stretch out and carry the below that the arm groove places moving contact; reset button is inserted in the bonnet lock hole of release and snap close; button spring is contained between reset button lower end and the housing bottom; the back frame of bonnet lock hole be inserted into the reset button rear side lock buckling groove on; the snap close afterbody links to each other with iron core front end in being built in solenoid; the iron core spring is built in end in contact behind solenoid rear portion and the iron core and with the anterior iron core of releasing of iron core; during normal power supply; the elastic force that iron core is subjected to the iron core spring with the back frame of bonnet lock hole be inserted into the reset button rear side lock buckling groove on; release and reset button are connected as a single entity; reset button pops up under the elastic force effect of button spring again; and then drive release and move upward, the arm of carrying on the release then upwards lifts moving contact and contacts with fixed contact and make power connection.When leaky occurring; leakage protection circuit makes the solenoid energising and produces magnetic field; iron core is sucked back in the solenoid; and then the back frame of bonnet lock hole pulled out from the lock buckling groove of reset button; release and reset button are thrown off; moving contact then leaves fixed contact because of the support force of carrying arm that loses on the release, circuit is disconnected and plays a protective role.Can be used on the attaching plug of household electrical appliance such as air-conditioning, TV.But because the releasing structure of this disconnect snap close is a pulling formula structure, the magnetic force that solenoid produces to the gravitation of iron core must greater than the elastic force of iron core spring and bonnet lock hole frame from be inserted into the reset button rear side lock buckling groove the frictional force sum of extracting, so the magnetic field intensity that requires is bigger, the electric current that solenoid needs is also just bigger, has weak points such as the slow and sensitivity of the opening speed of switch is lower.

Summary of the invention

The purpose of this utility model is in order to overcome the weak point of above-mentioned pulling formula leakage protecting plug, design a kind of highly sensitive, opening speed fast and the little impacting type leakage protecting plug of solenoid operating current.

Impacting type leakage protecting plug of the present utility model; mainly be on the basis of above-mentioned pulling formula leakage protecting plug; the pulling formula structure that by iron core pulling snap close switch is disconnected on double break open type switch changes the impacting type structure that switch is disconnected by iron core bump snap close into; the structure of this double-break switch comprises two fixed contacts and two moving contacts; be provided with the reset button of lock buckling groove; be provided with the button cavities of carrying the arm groove; be provided with two releases of carrying arm and vertical button hole and horizontal lock buckling groove; be provided with the snap close of bonnet lock hole; button spring; solenoid and bobbin; iron core and iron core spring; release is contained in the button cavities; release two carry arm and stretch out and carry the below that the arm groove places moving contact; reset button is inserted in the bonnet lock hole of vertical button hole of release and snap close; button spring is contained between reset button lower end and the housing bottom; wherein; the front bezel of the bonnet lock hole of snap close front portion is inserted on the lock buckling groove of reset button; snap close afterbody and iron core front end from; also have additional latch spring; described latch spring is contained between the snap close afterbody inboard and the release outside; the thin part of iron core front end is built in the solenoid; the iron core spring housing is contained in the iron core rear portion of stretching out solenoid, and an end of iron core spring is packed in the iron core afterbody; the other end is mounted on the solenoid rear end.

Because iron core front end and snap close afterbody maintain distance, the speed of solenoid energising back iron core motion is progressively accelerated, bump snap close when speed reaches the fastest, has very big ballistic work, made full use of the kinetic energy of iron core, so Impact energy is big, the speed that the front bezel of bonnet lock hole is left from the lock buckling groove of reset button is fast, have highly sensitive, opening speed is fast, advantages such as the little and production cost of solenoid operating current is low, be the upgraded product of common power plug, be adapted at air-conditioning, electric heater, be extensive use of on the attaching plug of household electrical appliance such as refrigerator and electric socket.

Description of drawings

Accompanying drawing 1 is the parts deployed configuration schematic diagram of plug of the present utility model;

Structural representation when accompanying drawing 2 is plug normal power supplies of the present utility model;

Accompanying drawing 3 is that plug bump of the present utility model disconnects the structural representation when moving.

Embodiment

Referring to accompanying drawing, 1 in the accompanying drawing is ground wire inserted sheet, the 2nd, button spring, the 3rd, and housing bottom, the 4th, the moving contact of live wire or center line is with movable contact spring, the 5th, the inserted sheet of live wire or center line and fixed contact, the 6th, case top lid, the 7th, reset button, the 8th, release, the 9th, latch spring, the 10th, bonnet lock hole, the 11st, snap close, the 12nd, button cavities, the 13rd, bobbin, the 14th, iron core spring, the 15th, iron core, the 16th, circuit board, the 17th, output cable, the 18th, the lock buckling groove on the reset button, the 19th, snap close guide vane end stop, the 20th, iron core guide vane end stop.Impacting type leakage protecting plug of the present utility model (referring to accompanying drawing 1-3) comprises housing 3 and 6; live wire inserted sheet and center line inserted sheet 4; ground wire inserted sheet 1; leakage protection circuit and circuit board 16 thereof; double-break switch and output cable 17; one way switch of described double-break switch is serially connected between live wire inserted sheet and the cable live wire; another way switch is serially connected between center line inserted sheet and the cable center line; the drive coil of double-break switch is connected with the output of leakage protection circuit; the structure of double-break switch comprises two fixed contacts 5 and two moving contacts 4; be provided with the reset button 7 of lock buckling groove 18; be provided with the button cavities 12 of carrying the arm groove; be provided with two releases 8 of carrying arm and vertical button hole and horizontal lock buckling groove; be provided with the snap close 11 of bonnet lock hole 10; button spring 2; solenoid and bobbin 13; iron core 15 and iron core spring 14; release 8 is contained in the button cavities 12; release 8 two carry arm and stretch out and carry the below that the arm groove places moving contact 4; reset button 7 is inserted in the bonnet lock hole 10 of vertical button hole of release 8 and snap close; button spring 2 is contained between the lower end and housing bottom 3 of reset button 7; the front bezel of the bonnet lock hole 10 of snap close 11 front portions is inserted on the lock buckling groove 18 of reset button 7; snap close 11 afterbodys and iron core 15 front ends from; also have additional latch spring 9; described latch spring 9 is contained between the snap close 11 afterbodys inboard and release 8 outsides; iron core 15 front portions more carefully are built in the solenoid 13; iron core spring 14 is sleeved on iron core 15 rear portions of stretching out solenoid 13, and an end of iron core spring 14 is packed in iron core 15 afterbodys; the other end is mounted on solenoid 13 rear ends.In order to prevent that snap close 11 from can too retreat because of the elastic force of latch spring 9, prevent that iron core 15 from too retreating because of the effect of iron core spring 14, can set up snap close guide vane end stop 19 and iron core guide vane end stop 20 (referring to accompanying drawing 2 and 3), described snap close guide vane end stop 19 is located at should give up the throne with the snap close afterbody and puts on 12 sidewalls of corresponding buttons chamber, and iron core guide vane end stop 20 is located at should give up the throne with the iron core rear end and puts on the corresponding case lid 6.

When needing normal power supply, press reset button 7, snap close 11 is inserted on the lock buckling groove 18 of reset button 7 front sides the front bezel of bonnet lock hole 10 because of afterbody is subjected to the elastic force of latch spring 9, release 8 and reset button 7 are connected as a single entity, reset button 7 pops up under the elastic force effect of button spring 2 again, and then drive release 8 moves upward, on the release 8 two carry arm and then two moving contacts 4 are upwards lifted Ta Bie and contact with two fixed contacts 5 and make power connection (referring to accompanying drawing 2), can be to the load normal power supply.When leaky appears in cable or load; leakage protection circuit makes solenoid 13 (representing with bobbin among the figure) energising and produces magnetic field; iron core 15 under the action of a magnetic field in the solenoid to preceding going out; bump snap close 11 afterbodys; snap close is travelled forward; and then it is the front bezel of bonnet lock hole 10 is knocking-on from the lock buckling groove 18 of reset button 7; release 8 and reset button 7 are thrown off; 4 of moving contacts are because of the support force of carrying arm that loses on the release 8 leaves fixed contact 5 (referring to accompanying drawing 3), circuit is disconnected and play a protective role.Fault is pressed reset button 7 and is got final product operate as normal after getting rid of.

Claims (2)

1; a kind of impacting type leakage protecting plug comprises housing; the live wire inserted sheet; the center line inserted sheet; the ground wire inserted sheet; leakage protection circuit; double-break switch and output cable; one way switch of described double-break switch is serially connected between live wire inserted sheet and the cable live wire; another way switch is serially connected between center line inserted sheet and the cable center line; the drive coil of double-break switch is connected with the output of leakage protection circuit; the structure of double-break switch comprises two fixed contacts and two moving contacts; be provided with the reset button of lock buckling groove; be provided with the button cavities of carrying the arm groove; be provided with two releases of carrying arm and vertical button hole and horizontal lock buckling groove; be provided with the snap close of bonnet lock hole; button spring; solenoid and bobbin; iron core and iron core spring; release is contained in the button cavities; release two carry arm and stretch out and carry the below that the arm groove places moving contact; reset button is inserted in the bonnet lock hole of vertical button hole of release and snap close; button spring is contained between reset button lower end and the housing bottom; the front bezel that it is characterized in that the bonnet lock hole of snap close front portion is inserted on the lock buckling groove of reset button; snap close afterbody and iron core front end from; also have additional latch spring; described latch spring is contained between the snap close afterbody inboard and the release outside; the thin part of iron core front end is built in the solenoid; the iron core spring housing is contained in the iron core rear portion of stretching out solenoid, and an end of iron core spring is packed in the iron core afterbody; the other end is mounted on the solenoid rear end.

2, impacting type leakage protecting plug as claimed in claim 1; it is characterized in that also having additional snap close guide vane end stop and iron core guide vane end stop; described snap close guide vane end stop be located at snap close afterbody going-back position corresponding buttons chamber sidewall on, the iron core guide vane end stop be located at the corresponding case lid of iron core rear end going-back position on.