CN106384702B

CN106384702B - Built-in leakage protection module

Info

Publication number: CN106384702B
Application number: CN201611013189.3A
Authority: CN
Inventors: 章祖德
Original assignee: CHANGSHU CITY LIDE ELECTRICAL Co Ltd
Current assignee: CHANGSHU CITY LIDE ELECTRICAL Co Ltd
Priority date: 2016-11-17
Filing date: 2016-11-17
Publication date: 2018-03-06
Anticipated expiration: 2036-11-17
Also published as: CN106384702A

Abstract

A kind of built-in leakage protection module, including base, has base cavity；Pedestal, tool pushrod actuation mechanism accommodating chamber；Circuit board and pushrod actuation mechanism；On be stamped SR and test button, push rod, which has, resets hook plate, push rod spring；Dynamic contact mechanism includes first, second moving contact, first, second outlet terminal；Static contact mechanism includes first, second static contact, first, second input terminal；Zero sequence current mutual inductor, it is connected with circuit board；Transverse arm frame, is located in base cavity, feature：Push rod hanging feet is arranged at the bottom of push rod, and the top of transverse arm frame sets push rod hanging feet mating cavity；The rear side of first, second outlet terminal and upper lid is fixed, and the front side of first, second input terminal and upper lid is fixed；There is the first moving contact force application spring seat on the left of pedestal, seat intracavitary sets the first moving contact force application spring, there is the second moving contact force application spring seat on the right side of pedestal, and seat intracavitary sets the second moving contact force application spring.Reliable in action；Base small volume, facilitate wiring and installation；Safety.

Description

Built-in leakage protection module

Technical field

The invention belongs to low-voltage electrical apparatus technical field of safety devices, and in particular to a kind of built-in leakage protection module.

Background technology

Above mentioned built-in concept refers to be matched with power extension socket in a state of use（Also referred to as " power supply wiring Plate "）Etc electric component in.The technology letter of leakage protecting plug can be not only seen in disclosed Chinese patent literature Breath, and the technical information of earth leakage protective socket can also be seen in, the former collects earth leakage protective mechanism together on plug, is somebody's turn to do to using The electrical appliance of plug plays leakage protection, it is typical as CN203326256U recommend " it is a kind of can the earth leakage protective of waterproof insert " leakage protecting plug that three poles can mutually switch with two poles " and CN104934926A that head ", CN103887660B are provided are introduced " it is a kind of can force thread off earth leakage protective device " and CN106057591A disclose " be suitable to Automated assembly electric leakage protect Protect device structure ", etc..Earth leakage protective mechanism is arranged in power extension socket by the latter, i.e. the housing installed in power extension socket It is interior, have and play earth leakage protective, typical such as CN201369305Y to the electrical appliance by plug and the power board inserting Recommend " a kind of leakage protection structure ", CN203103249U provide " a kind of earth leakage protective socket trip gear " and " being used in the tripper structure in earth leakage protective device " that CN203721662U is introduced, etc..

By the reading to above-mentioned patent document and combine common knowledge：Leakage protecting plug has with strong points The characteristics of, and earth leakage protective socket energy pair and multiple electrical appliances of its inserting are protected, as long as earth leakage protective socket is because of electric leakage And cut off circuit, then the power supply for all electrical appliances by plug with its inserting is just cut off.The work of earth leakage protective mechanism With being：Under normal circumstances, electric current flow to zero line from live wire and forms loop, and ground wire does not have the electric current of electric current, live wire and zero line It is equal, magnetic field caused by the two equal electric currents is the structure of foregoing leakage protection module in earth leakage protective mechanism Repealed by implication on the zero sequence current mutual inductor of system, therefore, the secondary coil influence electricity miscarriage life of zero sequence current mutual inductor；When When there is electric leakage situation, because one part of current is flowed away by ground wire, the electric current of live wire is caused to be more than the electric current of zero line, so that zero The secondary coil of sequence current transformer produces induced-current, and just speed responds simultaneously the electric current after the amplifying circuit of circuit board Cut off the electricity supply, reach the purpose for preventing getting an electric shock.

" tripping mechanism of RCCB " that Chinese patent Authorization Notice No. CN2528101Y recommends can be arranged at foregoing In the electric component of power extension socket etc, and it can objectively cash the effect of the technology described in the technique effect column of its specification Fruit（The 5th section of specification text the 1st page）, but following shortcoming be present：First, because push rod is that transverse arm frame is produced by lock Effect, i.e., push rod and be not directly placed on transverse arm frame, thus active force transmission link is more, influence the stability of action with it is reliable Property；Second, because a pair of input terminals and a pair of outlet terminals are respectively arranged at the both ends of base, thus not only cause base body Product increase, and it is relatively cumbersome by filling；Third, due to the movable contact of the free end of a pair of moving contacts and the stationary contact of a pair of static contacts The separation of point is that the natural resiliency in the case where being acted on without external force entirely with a pair of moving contacts is realized, thus once a pair of moving contacts itself There is tired situation because when is long in elasticity, then the separating effect of movable contact and stationary contact is affected, or even can not divide completely From so as to influence leakage condition incision deenergizing or even trigger security incident.

For above-mentioned prior art, still there is improved necessity, the applicant has made beneficial design for this, will be detailed below being situated between The technical scheme to continue is caused under this background.

The content of the invention

The task of the present invention is that providing one kind helps to make push rod directly act on transverse arm frame and use reduction acting ring Save and improve the Stability and dependability of transverse arm frame action, be advantageous to electric current input terminal and power outlet terminal being arranged on The volume for being reduced significantly base is used on upper lid and is facilitated wiring and is installed, is beneficial to use for moving contact application external force The built-in leakage protection module of the movable contact of moving contact and the stationary contact reliable separation of static contact is ensured in electric leakage situation.

What the task of the present invention was performed by, a kind of built-in leakage protection module, including a base, base tool There is a base cavity；One pedestal, the pedestal are supported on the rear portion of base cavity, and the pedestal has a pushrod actuation mechanism accommodating chamber；One Circuit board and a pushrod actuation mechanism, circuit board are fixed in the position of the top corresponding to the pedestal with pedestal, pushrod actuation Mechanism is contained in pushrod actuation mechanism accommodating chamber and is connected with circuit board electrical control；One Shang Gai and a push rod, on Cover and fixed in the position of the top corresponding to circuit board and described base, be provided with a SR and an examination on lid on this Button is tested, SR is corresponding with the top of push rod, test button and corresponding, the push rod of test button switch on circuit board Set up or down on circuit boards, a reset hook plate is connected with the top of the push rod, one is also arranged with push rod and is pushed away Bar spring, the upper end of the push rod spring, which is supported on, to be resetted on hook plate, and lower end supporting is on circuit boards, and the bottom of push rod offers One armature caulking groove, the armature caulking groove are engaged with described pushrod actuation mechanism；One dynamic contact mechanism, the dynamic contact mechanism include First moving contact, one second moving contact, one first outlet terminal and one second outlet terminal, the front end of the first moving contact are configured to Free end and one first movable contact is fixed with towards upper side in the front end, and the rear end of the first moving contact is configured to fixed Hold and be fixedly connected with the first outlet terminal, the front end of the second moving contact is configured to free end and in the front end towards upper Side is fixed with one second movable contact, and the rear end of the second moving contact is configured to fixing end and fixed with the second outlet terminal connect Connect；One static contact mechanism, the static contact mechanism include the first static contact, one second static contact, one first input terminal and one the Two input terminals, one first stationary contact is fixed with the first static contact and in the position of the top corresponding to the first movable contact Point, one second stationary contact is fixed with the second static contact and in the position of the top corresponding to the second movable contact, first enters Line terminals are connected by the first wire with the first static contact, and the second input terminal is connected by the second wire with the second static contact；One zero Sequence current transformer, the zero sequence current mutual inductor are arranged on the front portion of the base cavity and are electrically connected with the circuit board, The first described wire and the second wire pass through the transformer centre bore of zero sequence current mutual inductor；One transverse arm frame, the transverse arm frame exist It is arranged on corresponding to the position at the rear of the zero sequence current mutual inductor in the base cavity, and the top of the transverse arm frame probes into Pushrod actuation mechanism accommodating chamber, being formed in the bottom of the transverse arm frame has a moving contact trailing arm, the left end of the moving contact trailing arm Below the front end of first moving contact, and the right-hand member of moving contact trailing arm corresponds under the front end of second moving contact Side, the bottom of the push rod is engaged with transverse arm frame, is characterised by the bottom of the push rod and corresponding to the armature The position of the top of caulking groove is extended with a pair of symmetrical push rod hanging feets each other, and in the top of the transverse arm frame and direction The side of push rod offers push rod hanging feet mating cavity corresponding to a pair or so, makes the push rod descending when pressing the SR When, a pair of push rods hanging feet enters in a pair of push rods hanging feet mating cavity, and when unclamping SR, in returning for the push rod spring Under multiple power effect, push rod is up, while drives transverse arm frame up by a pair of push rods hanging feet, the first described movable contact and second Movable contact contacts with described the first stationary contact and the second stationary contact simultaneously, when described pushrod actuation mechanism is corresponding to pushing away The position of the armature caulking groove of bar makes the bottom of push rod, and towards during direction displacement away from transverse arm frame, a pair of push rods hanging feet exits a pair Push rod hanging feet mating cavity, transverse arm frame is descending, and the first movable contact and the second movable contact are quiet with the first stationary contact and second respectively Contact separation；The first described outlet terminal and the rear side of the second outlet terminal and the upper lid are fixed, and described first The front side of input terminal and the second input terminal respectively with described upper lid is fixed；On the left of the pedestal and corresponding to The position at the middle part of first moving contact, which is formed, one first moving contact force application spring seat, in the first moving contact force application spring First moving contact force application spring seat intracavitary of seat is provided with one first moving contact force application spring, the first moving contact force application spring Upper end is supported on the chamber roof of the first moving contact force application spring seat chamber, and lower end is supported on the first moving contact towards upper side Middle part, the right side of pedestal and the middle part corresponding to second moving contact position form there is one second moving contact to apply Power spring base, the second moving contact force application spring seat intracavitary of the second moving contact force application spring seat is provided with one second moving contact Force application spring, the upper end of the second moving contact force application spring are supported on the chamber roof of the second moving contact force application spring seat chamber, and Lower end is supported on the second moving contact towards the middle part of upper side.

In the specific embodiment of the present invention, respectively formed with a base on the outer wall of the left and right sides of the base Tab, and respectively formed with a base on the outer wall of the left and right sides covered on described and in the position corresponding to base tab Tab mating flanges, the base tab mating flanges are engaged with base tab；The middle part on edge on the rear end of base Formed with an outlet terminal lead-out wire resigning groove, the front end lower edge covered on described offers a pair of input terminal wiring pins and allowed Position groove.

In another specific embodiment of the present invention, towards upper side and it is located at four corners in the pedestal A pedestal pin is respectively extended with, a pedestal is offered on described circuit board and respectively in the position corresponding to pedestal pin and inserts Pin hole, pedestal pin and pedestal pin holes inserting；In the front of pushrod actuation mechanism accommodating chamber by cavity dividing plate every setting There is a transverse arm frame chamber, the top of the transverse arm frame probes into transverse arm frame chamber, and an armature resigning hole is offered on cavity dividing plate, forms In the bottom of the push rod the pair of push rod hanging feet transverse arm frame intracavitary enter described a pair of push rods hanging feet mating cavity or Exit a pair of push rods hanging feet mating cavity, the armature caulking groove of push rod bottom is in the position corresponding to the armature resigning hole with setting The pushrod actuation mechanism put in pushrod actuation mechanism accommodating chamber is engaged.

In another specific embodiment of the present invention, on the top of the transverse arm frame and towards the one of the push rod Side form have a push rod mating cavity, the bottom of chamber wall of the push rod mating cavity left end and right-hand member and equally towards the side of push rod Each form has one to be used to guide the described a pair of push rods hanging feet mating cavity of described a pair of push rods hanging feet entrance or exit a pair of heaps The push rod hanging feet guiding incline of bar hanging feet mating cavity.

In another specific embodiment of the present invention, offer a reseting hook on the top of the push rod and draw hole, Being formed on described reset hook plate has a reseting hook, is drawn by the reseting hook and draws hole in reseting hook and will reset hook plate and push rod Top fix.

In the also specific embodiment of the present invention, described pushrod actuation mechanism includes a coil brace, one Coil and an armature, coil brace are contained in described pushrod actuation mechanism accommodating chamber, and coil winding is in coil brace Portion and it is electrically connected with the circuit board, armature is arranged in the armature chamber in the middle part of coil brace, and the front end of the armature passes through It is opened in the coil brace armature resigning hole of the front side of coil brace and is stretched over the armature of the bottom corresponding to the push rod The position of caulking groove, is arranged with an armature spring on the armature, and one end of the armature spring is supported on the armature spring branch of armature On cushion cap rank, and the other end is supported on coil brace, in the front end of the armature and corresponding to the armature caulking groove Position, which is formed, an armature neck, and described armature caulking groove coordinates in the position corresponding to armature neck and the front end of armature.

In a still more specific embodiment of the invention, formed on the front side outer wall of the pedestal have it is one first quiet Contact inserts build-in reservation and one second static contact inserts build-in reservation, and the slotting build-in of the first described static contact is scheduled on the first static contact and inserted In build-in reservation, and the second described static contact is inserted build-in and is scheduled in the slotting build-in reservation of the second static contact, first, second static contact Between space be configured to pressing plate trailing arm mating groove.

The present invention so that in a specific embodiment, on the front side of the pedestal middle position on edge open up with Have a pressing plate projection mating cavity, a pressing plate be equipped on front side of pedestal by means of the pressing plate projection mating cavity, the pressing plate by One pressing plate transverse arm, a pressing plate trailing arm and a pressing plate projection are formed, pressing plate projection be formed in the rear side of pressing plate transverse arm and with it is described Pressing plate projection mating cavity coordinate, the left end lower surface of pressing plate transverse arm is close to the upper surface of first static contact, and pressing plate The right-hand member lower surface of transverse arm is close to the upper surface of second static contact, and pressing plate trailing arm inserts the pressing plate trailing arm mating groove, The left surface of the pressing plate trailing arm is close to the right flank of the first static contact, and a left side for the right flank of pressing plate trailing arm and the second static contact It is close to side.

One first is extended with the front side outer wall covered in yet a further embodiment of the present invention on described Input terminal fixed seat and one second input terminal fixed seat, the first described input terminal are consolidated with the first input terminal fixed seat Fixed, the second described input terminal is fixed with the second input terminal fixed seat, and one first is extended with the rear side outer wall of upper lid Outlet terminal fixed seat and one second outlet terminal fixed seat, the first described outlet terminal are consolidated with the first outlet terminal fixed seat Fixed, the second described outlet terminal is fixed with the second outlet terminal fixed seat.

Again and then in a specific embodiment, an indicator lamp is provided with described upper lid, this refers in the present invention Show that lamp is electrically connected with the circuit board.

Technical scheme provided by the invention is relative to one of technique effect of prior art, because the bottom in push rod is formed Having a pair of push rods hanging feet and being formed on the top of transverse arm frame has a pair of push rods hanging feet mating cavity, thus without in transition Push rod can be directly engaged with transverse arm frame in the case of part, can both reduce action transmission link, and can improves transverse arm frame Reliability of Microprocessor and stability；Two, due to first, second input terminal and first, second outlet terminal being arranged on Cover, thus can not only reduce the volume of base, and help to facilitate wiring and installation；Three, due on a left side for pedestal Right side be respectively provided with first, second moving contact force application spring seat, and be respectively provided with and first, second moving contact thereon The first, second moving contact force application spring coordinated, thus in electric leakage situation, it can ensure that first, second movable contact and first, the Two static contacts separate and cut off circuit, guarantee safety.

Brief description of the drawings

Fig. 1 is embodiments of the invention structure chart.

Fig. 2 is the enlarged drawing of the pushrod actuation mechanism shown in Fig. 1.

Fig. 3 is the application examples schematic diagram of the present invention.

Embodiment

In order to which the technical spirit and beneficial effect of the present invention is more clearly understood, applicant is below with embodiment Mode elaborate, but the description to embodiment is not the limitation to the present invention program, any according to structure of the present invention Think made only formal rather than substantial equivalent transformation and be regarded as technical scheme category.

In the following description the every directionality for being related to upper, lower, left, right, front and rear or directionality both for For the location of the figure being described state, thus it can not be understood as to technical scheme provided by the invention It is particularly limited to.

Fig. 1 is referred to, shows a base 1 made of plastics are by mould, the base 1 has a base cavity 11；Show A pedestal 2 equally made of plastics are by mould is gone out, the pedestal 2 is supported on the rear portion of base cavity 11, and the pedestal 2 has one Pushrod actuation mechanism accommodating chamber 21；Show a circuit board 3 and a pushrod actuation mechanism 4（Also can claim " tripping mechanism ", below Together）, circuit board 3 fixes in the position of the top corresponding to foregoing pedestal 2 with pedestal 2, and pushrod actuation mechanism 4 is contained in foregoing push away It is connected in bar actuating mechanism accommodating chamber and with the electrical control of circuit board 3；Show still one made of plastics are by mould The upper push rod 6 of lid 5 and one, upper lid 5 is fixed in the position of the top corresponding to circuit board 3 and foregoing base 1, on this on lid 5 A SR 51 and a test button 52 are provided with, SR 51 is corresponding with the top of push rod 6, test button 52 and electricity Test button switch 31 on road plate 3 is corresponding, and push rod 6 is in the position corresponding to the push rod sliding eye 33 being opened on circuit board 3 Put and be arranged on up or down on circuit board 3, a reset hook plate 61 is connected with the top of the push rod 6, is also arranged on push rod 6 There is a push rod spring 62, the upper end of the push rod spring 62, which is supported on, to be resetted on hook plate 61, and lower end is supported on circuit board 3, is pushed away The bottom of bar 6 offers an armature caulking groove 63, and the armature caulking groove 63 is engaged with foregoing pushrod actuation mechanism 4；Show one Dynamic contact mechanism 7, the dynamic contact mechanism 7 include the first moving contact 71, one second moving contact 72, one first outlet terminal 73 and one Second outlet terminal 74, the front end of the first moving contact 71 are configured to free end and are fixed with one towards upper side in the front end First movable contact 711, and the rear end of the first moving contact 71 is configured to fixing end and is fixedly connected with the first outlet terminal 73, the The front end of two moving contacts 72 is configured to free end and is fixed with one second movable contact 721 towards upper side in the front end, and The rear end of second moving contact 72 is configured to fixing end and is fixedly connected with the second outlet terminal 74；Show a static contact mechanism 8, the static contact mechanism 8 includes the first static contact 81, one second static contact 82, one first input terminal 83 and one second end of incoming cables Son 84, one first stationary contact is fixed with the first static contact 81 and in the position of the top corresponding to the first movable contact 711 811, it is fixed with one second stationary contact on the second static contact 82 and in the position of the top corresponding to the second movable contact 721 821, the first input terminal 83 is connected by the first wire 831 with the first static contact 81, and the second input terminal 84 is by the second wire 841 It is connected with the second static contact 82；A zero sequence current mutual inductor 10 is shown, the zero sequence current mutual inductor 10 is arranged on said base Chamber 11 front portion and be electrically connected by a pair of current transformer lead-out wires 102 with aforementioned circuit plate 3, the first foregoing wire 831 and second wire 841 pass through zero sequence current mutual inductor 10 transformer centre bore 101；Show a transverse arm frame 9, the transverse arm Frame 9 is arranged in said base chamber 11 in the position at the rear corresponding to foregoing zero sequence current mutual inductor 10, and the transverse arm frame 9 Top probe into foregoing pushrod actuation mechanism accommodating chamber 21, being formed in the bottom of the transverse arm frame 9 has a moving contact trailing arm 91, and this is dynamic The left end of contact trailing arm 91 corresponds to below the front end of foregoing first moving contact 71, and before the right-hand member of moving contact trailing arm 91 corresponds to Below the front end for stating the second moving contact 72, the bottom of foregoing push rod 6 is engaged with the top of transverse arm frame 9.

Technical essential as technical scheme provided by the invention：In the bottom of foregoing push rod 6 and corresponding to foregoing The position of the top of armature caulking groove 63 is extended with a pair of symmetrical push rod hanging feets 64 each other, and in the upper of foregoing transverse arm frame 9 Portion and push rod hanging feet mating cavity 92 corresponding to a pair or so is offered towards the side of push rod 6, when pressing foregoing reset button 51 when making foregoing push rod 6 descending, and a pair of push rods hanging feet 64 enters in a pair of push rods hanging feet mating cavity 92, and when unclamping SR When 51, under the restoring force effect of foregoing push rod spring 62, push rod 6 is up, while drives transverse arm frame 9 by a pair of push rods hanging feet 64 Up, the first foregoing movable contact 711 contacts with the first stationary contact 811, while foregoing second movable contact 721 and foregoing the Two stationary contacts 821 contact, when foregoing pushrod actuation mechanism 4 makes push rod 6 in the position of the armature caulking groove 63 corresponding to push rod 6 Towards during direction displacement away from transverse arm frame 9, a pair of push rods hanging feet 64 exits a pair of push rods hanging feet mating cavity 92, transverse arm frame for bottom 9 naturally descending i.e. whereabouts, the first movable contact 711 separates with the first stationary contact 811, while the second movable contact 721 and the second stationary contact The separation of point 821；The first foregoing outlet terminal 73 and the rear side of the second outlet terminal 74 and foregoing upper lid 5 are fixed, and foregoing Front side respectively with foregoing upper lid 5 of the first input terminal 83 and the second input terminal 84 fix；In the foregoing left side of pedestal 2 And being formed in the position at the middle part corresponding to foregoing first moving contact 71 has one first moving contact force application spring seat 22, this One first moving contact force application spring is provided with first moving contact force application spring seat chamber 221 of one moving contact force application spring seat 22 2211, the upper end of the first moving contact force application spring 2211 is supported on the chamber roof of the first moving contact force application spring seat chamber 221, And lower end is supported on middle part of first moving contact 71 towards upper side, on the right side of pedestal 2 and corresponding to foregoing second The position at the middle part of moving contact 72, which is formed, one second moving contact force application spring seat 23, in the second moving contact force application spring seat 23 The second moving contact force application spring seat chamber 231 in be provided with one second moving contact force application spring 2311, second moving contact force The upper end of spring 2311 is supported on the chamber roof of the second moving contact force application spring seat chamber 231, and lower end is supported on second and dynamic touched First 72 towards upper side middle part.

Continue to see Fig. 1, respectively formed with a base tab 12 on the outer wall of the left and right sides of said base 1, and foregoing Respectively coordinate on the outer wall of the left and right sides of upper lid 5 and in the position corresponding to base tab 12 formed with a base tab convex Edge 53, the base tab mating flanges 53 are engaged with base tab 12；On the rear end of base 1 middle part on edge formed with One outlet terminal lead-out wire resigning groove 13, the front end lower edge of lid 5 offers a pair of input terminal wiring pins and stepped down on foregoing Groove 54.

As shown in Figure 1, also respectively being formed in the front end of said base 1 and rear end has a pair of base fixing screws seats 14, Base fixing screws 141 are equipped on base fixing screws seat 14, and in the front end of upper lid 5 and rear end and corresponding to one There is lid fixing screws seat 59b on a pair to each form in position of base fixing screws seat 14, base fixing screws 141 and upper lid are solid Determine screw base 59b to fix.The power board on the upper lid 5 shown in Fig. 1 the post 59c that is connected is used for and dragging shown in Fig. 3 Line plate 20 is fixed.

A pedestal pin 24 is respectively extended with towards upper side and positioned at four corners in foregoing pedestal 2, foregoing A pedestal pin holes 32, pedestal pin 24 and pedestal are respectively offered on circuit board 3 and in the position corresponding to pedestal pin 24 The inserting of pin holes 32；In the front of foregoing pushrod actuation mechanism accommodating chamber 21 by cavity dividing plate 211 every provided with a transverse arm frame chamber 212, the top of foregoing transverse arm frame 9 probes into transverse arm frame chamber 212, and an armature resigning hole 2111, structure are offered on cavity dividing plate 211 Enter foregoing a pair of push rods hanging feet in transverse arm frame chamber 212 into foregoing a pair of push rods hanging feet 64 of the bottom of foregoing push rod 6 Mating cavity 92 exits a pair of push rods hanging feet mating cavity 92, and the foregoing armature caulking groove 63 of the bottom of push rod 6 is corresponding to foregoing armature The position of resigning hole 2111 is engaged with the foregoing pushrod actuation mechanism 4 being arranged in foregoing pushrod actuation mechanism accommodating chamber 21. Because a pair of push rods hanging feet 64 of the bottom of push rod 6 is a pair of push rods hanging feet in transverse arm frame chamber 212 with the top of transverse arm frame 9 Mating cavity 92 is engaged or released what is coordinated（That is fastening or engaging lifting）, thus transverse arm frame chamber 212 alternatively referred to as latches chamber.

Continue to see Fig. 1, on the top of foregoing transverse arm frame 9 and forming towards the side of foregoing push rod 6 has a push rod to coordinate Chamber 93, the bottom of chamber wall of the push rod mating cavity 93 left end and right-hand member and equally towards push rod 6 side respectively form have a use Enter foregoing a pair of push rods hanging feet mating cavity 92 in the foregoing a pair of push rods hanging feet 64 of guiding or exit a pair of heap bar hanging feets and match somebody with somebody Close the push rod hanging feet guiding incline 931 of chamber 92.

As shown in Figure 1, offer a reseting hook on the top of foregoing push rod 6 and draw hole 65, on foregoing reset hook plate 61 Composition has a reseting hook 611, is drawn by the reseting hook 611 and draws hole 65 in reseting hook and will reset the upper of hook plate 61 and push rod 6 Portion is fixed.

See Fig. 2 and Fig. 1 is combined, foregoing pushrod actuation mechanism 4 includes a coil brace 41, a coil 42 and a rank Iron 43, the shape of coil brace 41 are contained in foregoing pushrod actuation mechanism accommodating chamber 21, line generally in H fonts Enclose 42 windings to be electrically connected at the middle part of coil brace 41 and with aforementioned circuit plate 3, armature 43 is arranged in coil brace 41 In the armature chamber in portion, the front end of the armature 43 passes through the coil brace armature resigning hole 411 for the front side for being opened in coil brace 41 And the position of the armature caulking groove 63 of the bottom corresponding to foregoing push rod 6 is stretched over, an armature bullet is arranged with the armature 43 Spring 431, one end of the armature spring 431 is supported on the armature spring supporting step 432 of armature 43, and other end supporting is online On coil support 41, there is an armature neck in the front end of foregoing armature 43 and in the position composition corresponding to foregoing armature caulking groove 63 433, foregoing armature caulking groove 63 coordinates in the position corresponding to armature neck 433 and the front end of armature 43.

By pressing test button 52, when coil 42 is powered, armature 43 is to armature chamber intrinsic displacement, due under push rod 6 Portion is engaged by armature caulking groove 63 with armature neck 433, thus by armature 43 in the case where overcoming the reaction force of armature spring 431 Drive direction displacement of the bottom of push rod 6 to coil brace 41（Swing）, make previously with a pair of push rods hanging feet mating cavity 92 to match A pair of push rods hanging feet 64 of conjunction exits a pair of push rods hanging feet mating cavity 92.Transverse arm frame 9 now is descending, and moving contact trailing arm 91 is no longer Upward active force is produced to the front end of first, second moving contact 71,72, in the natural resiliency of first, second moving contact 71,72 In the presence of, at the same force first under the restoring force effect of foregoing first, second moving contact force application spring 2211,2311, the First, second moving contact 711,721 on two moving contacts 71,72 respectively with first, second static contact 81,82 first, second Stationary contact 811,821 is separated, and faulty circuit is cut off.Fixing a breakdown as found out the reason for causing electric leakage and eliminating electric leakage After reason, SR 5 is pressed by user, specifically by following explanation.

When pressing SR 51, the top of push rod 6 is acted on by the SR haptic element of SR 51, makes push rod 6 Descending, push rod spring 62 compresses and energy storage, when push rod 6 is descending, the push rod guiding incline of the push rod mating cavity 93 through transverse arm frame 9 A pair of push rods of the bottom of push rod 6 is pushed away pin 64 by 931 to be imported in a pair of push rods hanging feet mating cavity 92.Then when the finger of operator is released Put（Leave）During SR 51, reset push rod 6 under the restoring force effect of push rod spring 62（It is i.e. up）, due to now A pair of push rods hanging feet 64 is in push rod hanging feet mating cavity 92, therefore when push rod 6 is up, transverse arm frame 9 is also up, by transverse arm frame The moving contact trailing arm 91 of 9 bottoms will be lifted on the front end of first, second moving contact 71,72 simultaneously, make the first movable contact 711 and first Stationary contact 811 is contacted, while the second movable contact 721 is contacted with the second stationary contact 821, and circuit is connected.

As shown in Figure 1, being formed on the front side outer wall of foregoing pedestal 2 has one first static contact to insert build-in reservation 25 and 1 the Two static contacts insert build-in reservation 26, and the first foregoing static contact 81 is inserted build-in and is scheduled in the slotting build-in reservation 25 of the first static contact, and The second foregoing static contact 82 is inserted build-in and is scheduled in the slotting build-in reservation 26 of the second static contact, between first, second static contact 81,82 Space be configured to pressing plate trailing arm mating groove 29.

Preferably, the middle position on edge is opened up to there is a pressing plate projection mating cavity 27 on the front side of foregoing pedestal 2, by A pressing plate 28 is equipped with the front side of pedestal 2 in the pressing plate projection mating cavity 27, the pressing plate 28 is by a pressing plate transverse arm 281, one The pressing plate projection 283 of pressing plate trailing arm 282 and one is formed, pressing plate projection 283 be formed in the rear side of pressing plate transverse arm 281 and with it is foregoing Pressing plate projection mating cavity 27 coordinates, and the left end lower surface of pressing plate transverse arm 281 is close to the upper surface of foregoing first static contact 81, and The right-hand member lower surface of pressing plate transverse arm 281 is close to the upper surface of foregoing second static contact 82, and pressing plate trailing arm 282 inserts aforementioned platens Trailing arm mating groove 29, the left surface of the pressing plate trailing arm 282 are close to the right flank of the first static contact 81, and pressing plate trailing arm 282 Right flank is close to the left surface of the second static contact 82.

As shown in Figure 1, one first input terminal fixed seat 55 and one second is extended with the front side outer wall of lid 5 on foregoing Input terminal fixed seat 56, the first foregoing input terminal 83 are fixed with the first input terminal fixed seat 55, and foregoing second enters Line terminals 84 are fixed with the second input terminal fixed seat 56, and one first outlet terminal is extended with the rear side outer wall of upper lid 5 and is consolidated The outlet terminal fixed seat 58 of reservation 57 and 1 second, the first foregoing outlet terminal 73 and the first outlet terminal fixed seat 57 are solid Fixed, the second foregoing outlet terminal 74 is fixed with the second outlet terminal fixed seat 58.

An indicator lamp 59a is provided with foregoing upper lid 5, indicator lamp 59a is electrically connected with aforementioned circuit plate 3.

As shown in Figure 1, one end of foregoing first wire 831 and the first input terminal wiring pin of the first input terminal 83 832 electrical connections, and the other end of first wire 831 through after foregoing transformer centre bore 101 with the first static contact 81 Electrical connection, one end and the second input terminal wiring pin 842 of the second foregoing wire 841 are electrically connected, and second wire 841 other end with the second static contact 82 through being electrically connected after transformer centre bore 101.

When there is electric leakage situation, through foregoing first wire of the transformer centre bore 101 of zero sequence current mutual inductor 10 831（It is assumed to be live wire）And second wire 841（It is assumed to be zero line）Current phasor and not equal to zero, zero sequence current mutual inductor 10 produce induced-currents and export to circuit board 3, and the loop on circuit board 3 is connected, coil 42（That is magnet coil）There is electric current stream Cross, produce magnetic field and inhale moving armature 43.Exited by a pair of push rods hanging feet 64 of the applicant bottom described above for making push rod 6 （Leave）A pair of push rods hanging feet mating cavity 92, faulty circuit disjunction.Because the circuit of the circuit board 3 referred to repeatedly above belongs to Conventional and simple known technology, and the patent document that is referred to referring also to the superincumbent background technology column of applicant and CN102684148B（A kind of earth leakage protective device with expanded function）Etc., thus applicant repeats no more.

Fig. 3 is referred to, figure 3 illustrates a power board 20（Also referred to as " terminal plate "）, the built-in earth leakage protective of the present invention Module is arranged on the head 201 of power board 20, power line 30 introduce the head of power board 20 and after power switch 202 with this hair Bright first, second input terminal 83,84 electrical connection, first, second outlet terminal 73,74 is respectively by lead and power board 20 Socket 203 connect.Applicant it should be noted that：The invention is not limited in the application on power board 20, it may also be used for its The electric component of its similar type.

In summary, technical scheme provided by the invention compensate for the shortcoming in prior art, favorably accomplish invention Task, the technique effect referred in the superincumbent technique effect column of applicant is faithfully cashed.

Claims

1. a kind of built-in leakage protection module, including a base (1), the base (1) has a base cavity (11)；One pedestal (2), the pedestal (2) is supported on the rear portion of base cavity (11), and the pedestal (2) has a pushrod actuation mechanism accommodating chamber (21)；One Circuit board (3) and a pushrod actuation mechanism (4), circuit board (3) is in the position of the top corresponding to the pedestal (2) and pedestal (2) fixed, it is interior and electric with circuit board (3) that pushrod actuation mechanism (4) is contained in pushrod actuation mechanism accommodating chamber (21) Control connection；(5) and a push rod (6) are covered on one, upper lid (5) is in the position of the top corresponding to circuit board (3) and described bottom Seat (1) is fixed, is covered on this on (5) and is provided with a SR (51) and a test button (52), SR (51) is with pushing away The top of bar (6) is corresponding, and test button (52) is corresponding with the test button switch (31) on circuit board (3), on push rod (6) Under be movably arranged on circuit board (3), a reset hook plate (61) is connected with the top of the push rod (6), on push rod (6) also A push rod spring (62) is arranged with, the upper end of the push rod spring (62), which is supported on, to be resetted on hook plate (61), and lower end is supported on electricity On road plate (3), the bottom of push rod (6) offers an armature caulking groove (63), the armature caulking groove (63) and described pushrod actuation machine Structure (4) is engaged；One dynamic contact mechanism (7), the dynamic contact mechanism (7) include the first moving contact (71), one second moving contact (72), one first outlet terminal (73) and one second outlet terminal (74), the front end of the first moving contact (71) are configured to free end And one first movable contact (711) is fixed with towards upper side in the front end, and the rear end of the first moving contact (71) is configured to Fixing end and it is fixedly connected with the first outlet terminal (73), the front end of the second moving contact (72) is configured to free end and at this Front end is fixed with one second movable contact (721) towards upper side, and the rear end of the second moving contact (72) is configured to fixing end simultaneously And it is fixedly connected with the second outlet terminal (74)；One static contact mechanism (8), the static contact mechanism (8) include the first static contact (81), one second static contact (82), one first input terminal (83) and one second input terminal (84), in the first static contact (81) One first stationary contact (811) above and in the position of the top corresponding to the first movable contact (711) is fixed with, in the second static contact (82) one second stationary contact (821), the first inlet wire are fixed with and in the position of the top corresponding to the second movable contact (721) Terminal (83) is connected by the first wire (831) with the first static contact (81), the second input terminal (84) by the second wire (841) with Second static contact (82) connects；One zero sequence current mutual inductor (10), the zero sequence current mutual inductor (10) are arranged on the base cavity (11) front portion and with the circuit board (3) be electrically connected, described the first wire (831) and the second wire (841) pass through The transformer centre bore (101) of zero sequence current mutual inductor (10)；One transverse arm frame (9), the transverse arm frame (9) is corresponding to the zero sequence The position at the rear of current transformer (10) is arranged in the base cavity (11), and the top of the transverse arm frame (9) probes into institute Pushrod actuation mechanism accommodating chamber (21) is stated, being formed in the bottom of the transverse arm frame (9) has a moving contact trailing arm (91), the moving contact support The left end of arm (91) corresponds to below the front end of first moving contact (71), and the right-hand member of moving contact trailing arm (91) corresponds to institute Below the front end for stating the second moving contact (72), the bottom of the push rod (6) is engaged with transverse arm frame (9), it is characterised in that in institute State the bottom of push rod (6) and be extended with the position of the top corresponding to the armature caulking groove (63) a pair it is symmetrical each other Push rod hanging feet (64), and the top of the transverse arm frame (9) and towards the side of push rod (6) offer a pair or so it is corresponding Push rod hanging feet mating cavity (92), when pressing the SR (51) and making the push rod (6) descending, a pair of push rods hanging feet (64) enter in a pair of push rods hanging feet mating cavity (92), and when unclamping SR (51), in the push rod spring (62) Under restoring force effect, push rod (6) is up, while drives transverse arm frame (9) up by a pair of push rods hanging feet (64), and described first is dynamic Contact (711) and the second movable contact (721) while connect with described the first stationary contact (811) and the second stationary contact (821) Touch, when described pushrod actuation mechanism (4) makes the bottom of push rod (6) in the position of the armature caulking groove (63) corresponding to push rod (6) Towards during direction displacement away from transverse arm frame (9), a pair of push rods hanging feet (64) exits a pair of push rods hanging feet mating cavity (92), transverse arm Frame (9) is descending, the first movable contact (711) and the second movable contact (721) respectively with the first stationary contact (811) and the second stationary contact Point (821) separates；Described the first outlet terminal (73) and the second outlet terminal (74) and the rear side of the upper lid (5) are consolidated It is fixed, and the front side of described the first input terminal (83) and the second input terminal (84) respectively with described upper lid (5) is fixed； Forming on the left of the pedestal (2) and in the position at the middle part corresponding to first moving contact (71) has one first moving contact Force application spring seat (22), set in the first moving contact force application spring seat chamber (221) of the first moving contact force application spring seat (22) It is equipped with one first moving contact force application spring (2211), the upper end of the first moving contact force application spring (2211) is supported on first and dynamic touched On the chamber roof of head force application spring seat chamber (221), and lower end is supported on middle part of the first moving contact (71) towards upper side, The right side of pedestal (2) and the middle part corresponding to second moving contact (72) position form have one second moving contact force Spring base (23), it is provided with the second moving contact force application spring seat chamber (231) of the second moving contact force application spring seat (23) One second moving contact force application spring (2311), the upper end of the second moving contact force application spring (2311) are supported on the second moving contact and applied On the chamber roof of power spring cavity (231), and lower end is supported on middle part of the second moving contact (72) towards upper side, described Being formed on the front side outer wall of pedestal (2) has one first static contact to insert build-in reservation (25) and the slotting build-in reservation of one second static contact (26), described the first static contact (81) is inserted build-in and is scheduled in the slotting build-in reservation (25) of the first static contact, and described second is quiet Contact (82) is inserted build-in and is scheduled in the slotting build-in reservation (26) of the second static contact, the space between first, second static contact (81,82) It is configured to pressing plate trailing arm mating groove (29), the middle position on edge is opened up to there is a pressing plate projection on the front side of the pedestal (2) Mating cavity (27), a pressing plate (28) is equipped with front side of pedestal (2) by means of the pressing plate projection mating cavity (27), the pressing plate (28) it is made up of a pressing plate transverse arm (281), a pressing plate trailing arm (282) and a pressing plate projection (283), pressing plate projection (283) is formed In pressing plate transverse arm (281) rear side and coordinate with described pressing plate projection mating cavity (27), under the left end of pressing plate transverse arm (281) Surface is close to the upper surface of first static contact (81), and the right-hand member lower surface of pressing plate transverse arm (281) and described second quiet The upper surface of contact (82) is close to, and pressing plate trailing arm (282) inserts the pressing plate trailing arm mating groove (29), the pressing plate trailing arm (282) Left surface be close to the right flank of the first static contact (81), and the right flank of pressing plate trailing arm (282) and the second static contact (82) Left surface be close to.

2. built-in leakage protection module according to claim 1, it is characterised in that in the left and right sides of the base (1) Respectively formed with a base tab (12) on outer wall, and covered on described on the outer wall of the left and right sides of (5) and the bottom of corresponding to The position of seat tab (12) respectively formed with a base tab mating flanges (53), the base tab mating flanges (53) with Base tab (12) is engaged；The middle part on edge is formed with an outlet terminal lead-out wire resigning groove on the rear end of base (1) (13) the front end lower edge that (5), are covered on described offers a pair of input terminal wiring pin slots to make way (54).

3. built-in leakage protection module according to claim 1, it is characterised in that in the pedestal (2) towards upper one Side and a pedestal pin (24) is respectively extended with positioned at four corners, on described circuit board (3) and corresponding to pedestal The position of pin (24) respectively offers a pedestal pin holes (32), pedestal pin (24) and pedestal pin holes (32) inserting；Institute The front of pushrod actuation mechanism accommodating chamber (21) is stated by cavity dividing plate (211) every provided with a transverse arm frame chamber (212), the transverse arm The top of frame (9) probes into transverse arm frame chamber (212), and an armature resigning hole (2111) is offered on cavity dividing plate (211), is formed in The pair of push rod hanging feet (64) of the bottom of the push rod (6) enters described a pair of push rods in transverse arm frame chamber (212) and hung Pin mating cavity (92) exits a pair of push rods hanging feet mating cavity (92), and the armature caulking groove (63) of push rod (6) bottom is corresponding Caused in the position of the armature resigning hole (2111) and the push rod being arranged in pushrod actuation mechanism accommodating chamber (21) Motivation structure (4) is engaged.

4. the built-in leakage protection module according to claim 1 or 3, it is characterised in that in the upper of the transverse arm frame (9) Portion and towards the push rod (6) side form have a push rod mating cavity (93), in the bottom of chamber wall of the push rod mating cavity (93) Left end and right-hand member and equally respectively being formed towards the side of push rod (6) has one to be used to guide described a pair of push rods hanging feet (64) Into described a pair of push rods hanging feet mating cavity (92) or exit the push rod hanging feet guiding inclines of a pair of heap bar hanging feet mating cavities (92) (931)。

5. built-in leakage protection module according to claim 1, it is characterised in that opened up on the top of the push rod (6) There is a reseting hook to draw hole (65), being formed on described reset hook plate (61) has a reseting hook (611), by the reseting hook (611) draw and draw hole (65) in reseting hook and fix the top for resetting hook plate (61) and push rod (6).

6. built-in leakage protection module according to claim 3, it is characterised in that described pushrod actuation mechanism (4) bag A coil brace (41), a coil (42) and an armature (43) are included, coil brace (41) is contained in described pushrod actuation mechanism In accommodating chamber (21), coil (42) winding is electrically connected at the middle part of coil brace (41) and with the circuit board (3), armature (43) it is arranged in the armature chamber in the middle part of coil brace (41), the front end of the armature (43), which passes through, is opened in coil brace (41) The coil brace armature resigning hole (411) of front side and it is stretched over the armature caulking groove (63) corresponding to the bottom of the push rod (6) Position, be arranged with an armature spring (431) on the armature (43), one end of the armature spring (431) is supported on armature (43) on armature spring supporting step (432), and the other end is supported on coil brace (41), before the armature (43) Holding and being formed in the position corresponding to the armature caulking groove (63) has an armature neck (433), described armature caulking groove (63) Coordinate in the position corresponding to armature neck (433) and the front end of armature (43).

7. built-in leakage protection module according to claim 1, it is characterised in that the front side outer wall of (5) is covered on described On be extended with one first input terminal fixed seat (55) and one second input terminal fixed seat (56), the first described input terminal (83) it is fixed with the first input terminal fixed seat (55), described the second input terminal (84) and the second input terminal fixed seat (56) it is fixed, one first outlet terminal fixed seat (57) and one second outlet terminal are extended with Shang Gai (5) rear side outer wall Fixed seat (58), described the first outlet terminal (73) is fixed with the first outlet terminal fixed seat (57), the second described outlet Terminal (74) is fixed with the second outlet terminal fixed seat (58).

8. built-in leakage protection module according to claim 1, it is characterised in that be provided with described upper lid (5) One indicator lamp (59a), the indicator lamp (59a) are electrically connected with the circuit board (3).