Double breaking circuit breakers
Technical field
The utility model relates to a kind of double breaking circuit breakers.
Background technique
Disjunction, closure while in order to realize the two poles of the earth breaker need two operating mechanism parallel side-by-side arrangements, aobvious in this way
It so cannot achieve the miniaturization of breaker and the requirement of high breaking.But if the two poles of the earth share an operating mechanism, i.e., one operation
The moving contact of two poles of mechanism controls and the switching action of static contact, can reduce the volume of circuit breaker.Chinese patent
In " a kind of operating device of multipole small-size breaker " disclosed in CN104134588A, including handle, U-shaped bar, trip link, jump
Restrictor bar, rotor plate, two contacts are supported and two pairs of dynamic/static contacts, and two contacts are supported to pass through two structures having the same
Travel mechanism is connect with rotor plate respectively, specifically, travel mechanism includes that one end and contact are supported to cooperate, the other end and rotor plate
The excess of stroke torsional spring of cooperation, to ensure in dynamic/static contact disjunction, rotor plate is engaged with contact support, dynamic/static contact closed type, is turned
Movable plate is separated with contact support.Herein, contact is supported and rotor plate is two components of separation, and moving contact passes through screw or riveting
Nail is fixedly installed in contact and supports that assembling product, process is tedious for debugging.
Summary of the invention
In view of this, the purpose of this utility model is to provide a kind of structures, simple, assembling and setting is easy, operating mechanism moves
Make stable and energy disjunction simultaneously, the double breaking circuit breakers for being closed two independent loops.
In order to achieve the goal above, the utility model uses such a double breaking circuit breakers, operating mechanism includes hand
Handle, interlocking bar, tripping and lock, the operating mechanism further include moving contact rack, the first contact torsional spring, the torsion of the second contact
Spring, the first moving contact and the second moving contact, the moving contact rack are articulated with contact axis, one on the moving contact rack
Molding tripping axis and lock shaft, the tripping and the lock pass through the tripping axis and the lock shaft pivot respectively
Turn ground to be mounted on the moving contact rack, the moving contact rack extends parallel to out forward for the described in placing
First bracket of one moving contact and the second bracket for placing second moving contact, the contact axle position is in described
The two sides of moving contact rack each extend over out first for placing the first contact torsional spring, the second contact torsional spring
Shaft end and the second shaft end, first moving contact are fixed on first bracket, institute by the first contact torsional spring
The second moving contact stated is fixed on second bracket by the second contact torsional spring.Compared with prior art, this reality
Be with the advantageous effects of novel creation: rotor plate is shaped in contact and supported by setting through the above structure,
Two moving contacts and a moving contact rack are fixed together by two contact torsional springs, component is few, it is convenient for assembling and setting,
And the contact pressure of two pairs of dynamic/static contacts is equal and can guarantee that the realization of two pairs of dynamic/static contacts is reliably electrically connected.
Particularly, double breaking circuit breakers include that the first contact room formed, Yi Jiyou are closed by upper cover and middle seat
Middle seat and pedestal are closed the second contact room to be formed, and the contact jaw of first moving contact and second moving contact connect
Contravention can do finite motion, the first contact room and second touching in the first contact room and the second contact room respectively
Head-room has arc-extinguishing mechanism independent.Setting through the above structure, two pairs of dynamic/static contacts go out in respective arc room
Arc, can fast and effeciently arc extinguishing, prevent the arcing of two pairs of dynamic/static contacts from coupling, cause bigger electric power harm.
Particularly, the lock be equipped with the first connecting lever and the second connecting lever, first connecting lever be equipped with it is described
Tripping cooperation clamping groove, second connecting lever can do finite motion between first bracket and the second bracket,
The lower end of second connecting lever position corresponding with the mandril of the electromagnetic mechanism is equipped with forced section, the forced section
Positioned at the lower section of the moving contact rack.Setting through the above structure will have the above moving contact rack and battery protection
Device is reliably assembled together, and when short circuit occurs in route where the contact of breaker, mandril strikes forced section, makes operation machine
Structure is quickly accomplished disjunction movement.
Particularly, the width of the forced section be greater than between first bracket and first bracket away from
From.Setting through the above structure is easy to implement the disjunction simultaneously of two pairs of dynamic/static contacts.
Particularly, otic placode, first touching are equipped on the outside of the rear end of first bracket and second bracket
Head torsional spring and the second contact torsional spring include the first end being continuously arranged, spring body, link arm, across arm and second end,
Two first ends are overlapped in respective otic placode, and two are cross-placed on the first moving contact and the second moving contact respectively across arm, and two
Second end is respectively arranged at the other side of first moving contact and second moving contact, the link arm, described
Be arranged across arm and the second end in three-dimensional orthogonal.Setting through the above structure, it is convenient to assemble two contacts
Torsional spring, enables the both ends of each contact torsional spring to be stably fixed to contact support, and operating mechanism is more stable when acting.
Particularly, first bracket and second bracket adopt a bilaterally symmetrical structure, and described first
Bracket, second bracket are respectively provided with the first limiting section and the second limiting section, are arranged on two the second limiting sections for placing
The through-hole of the contact axis.One end of moving contact piece can be articulated with contact support, moving contact by setting through the above structure
Limit is completed by the first limiting section and the second limiting section in the two sides of piece, finally, will be moved securely by the second link arm of contact torsional spring
Contact is fixed on contact and supports, makes moving contact with the rotation that contact is supported and completes opening and closing movement with static contact.
Particularly, one of them second limiting section or two the second limiting sections are integrally formed setting arc to center position
Plate, the length of the flash barrier are greater than the length of second limiting section.Setting through the above structure, due to moving contact
Bracket is located in a horizontal space in the top of two contact rooms, adds flash barrier between two brackets, can speed up and go out
Arc.
Detailed description of the invention
Fig. 1 is that the utility model embodiment removes the structural schematic diagram after upper cover and pedestal;
Fig. 2 is the utility model embodiment moving contact component part explosive view;
Fig. 3 is the structural schematic diagram of middle seat in the utility model embodiment;
Fig. 4 is the perspective view of the first touch spring in the utility model embodiment.
In figure: 1, middle seat;11, curved end;2, handle;3, contact axis;4, interlocking bar;5, moving contact rack;51, ear
Plate;52, the first moving contact;53, the first contact torsional spring;531, first end;532, spring body;533, link arm;534, across arm;535,
Second end;54, the second contact torsional spring;55, the second moving contact;56, the first limiting section;561, the second limiting section;57, arc
Plate;58, the first bracket;59, the second bracket;6, tripping;7, lock shaft;8, it latches;81, forced section.
Specific embodiment
As shown in figures 1-4, a kind of double breaking circuit breakers, operating mechanism include handle 2, interlocking bar 4, tripping 6 and lock
8, operating mechanism further includes moving contact rack 5, the first contact torsional spring 53, the second contact torsional spring 54, the first moving contact 52 and second
Moving contact 55, moving contact rack 5 are articulated with contact axis 3, are integrally formed tripping axis and lock shaft 7, tripping 6 on moving contact rack 5
It is pivotally mounted on moving contact rack 5 by tripping axis and lock shaft 7 respectively with lock 8, moving contact rack 5 is forward in parallel
Extend the first bracket 58 for placing the first moving contact 52 and the second bracket 59 for placing the second moving contact 55, contact
The two sides that axis 3 is located at moving contact rack 5 each extend over out first for placing the first contact torsional spring 53, the second contact torsional spring 54
Shaft end and the second shaft end, the first moving contact 52 are fixed on the first bracket 58 by the first contact torsional spring 53, and the second moving contact 55 is logical
It crosses the second contact torsional spring 54 and is fixed on the second bracket 59.
Double breaking circuit breakers include being closed the first contact room formed by upper cover and middle seat 1, and closed by middle seat 1 and pedestal
The contact jaw of the second contact room that conjunction is formed, the contact jaw of the first moving contact 52 and the second moving contact 55 can be respectively in the first contact
Finite motion is done in room and the second contact room, the first contact room and the second contact room have arc-extinguishing mechanism independent.
Lock 8 is equipped with the first connecting lever and the second connecting lever, and the first connecting lever is equipped with the clamping groove that cooperates with tripping 6, and second
Connecting lever can do finite motion, the lower end of the second connecting lever and the mandril pair of electromagnetic mechanism between the first bracket 58 and the second bracket 59
The position answered is equipped with forced section 81, and forced section 81 is located at the lower section of moving contact rack 5.
The width of forced section 81 is greater than the distance between the first bracket 58 and the first bracket 59.
Otic placode 51 is equipped on the outside of the rear end of first bracket 58 and the second bracket 59, the first contact torsional spring 53 and the second contact are turned round
Spring 54 include the first end 531 being continuously arranged, spring body 532, link arm 533, across arm 534 and second end 535, two first
End 531 is overlapped in respective otic placode 51, and two are cross-placed on the first moving contact 52 and the second moving contact 55 respectively across arm 534,
Two second ends 535 are respectively arranged at the other side of the first moving contact 52 and the second moving contact 55, link arm 533, across 534 and of arm
Second end 535 is arranged in three-dimensional orthogonal.
First bracket 58 and the second bracket 59 adopt a bilaterally symmetrical structure, and the first bracket 58, the second bracket 59 are all provided with
The first limiting section 56 and the second limiting section 561 are set, the through-hole for placing contact axis 3 is set on two the second limiting sections 561.
One of them second limiting section 561 or two the second limiting sections 561 are integrally formed setting flash barrier to center position
57, the length of flash barrier 57 is greater than the length of the second limiting section 561.