The electromagnetic release mechanism that is used for circuit breaker
Technical field
The utility model belongs to breaker technical field, is specifically related to a kind of electromagnetic release mechanism for circuit breaker.
Background technology
Circuit breaker is to use extremely wide product as the overload in low-voltage distribution system and the motor protection loop, short circuit, under voltage protection electrical equipment.The structure of circuit breaker generally is comprised of contact system, arc-control device, operating mechanism, trip gear, plastic casing and optional accessory.Contact system comprises and is connected on the dynamic/static contact that arranges in pairs in the circuit, and circuit transships, during the fault such as short circuit, under voltage, opens at the appointed time dynamic/static contact when the circuit breaker place, line disconnection, and protection circuit and power-supply device are not damaged; The electric arc that arc-control device is used for extinguishing dynamic/static contact to be produced when opening; Trip gear comprises thermal release device, electromagnetic release mechanism, undervoltage tripping mechanism; When circuit was short-circuited, short circuit current flow through trip gear, and the action of magnetic tripping mechanism is threaded off operating mechanism, and circuit breaker trip is realized the protection to circuit breaker place circuit and load.
The magnetic tripping mechanism comprises armature, yoke, spring, support, existing armature is usually with the both sides bending, offer symmetrically through hole at two bending parts, the top is provided with upwardly extending brake bar, support both sides symmetry is offered through hole, the support both sides are simultaneously with armature two bending part envelopes, and the through hole on armature two bending parts is all corresponding with through hole on the support both sides, join armature is compatible with support by the through hole offered on the through hole offered on the support both sides and the armature bending part respectively thereby be convenient to bolster, so that armature can be bearing on the support rotatably around bolster.In the electromagnetic release mechanism of this structure, the armature both sides need bending, also need offer through hole on it, are not easy to the processes of armature; Because the through hole on the support both sides will correspondingly with the through hole on armature two bending parts pass to hold bolster, be unfavorable for saving part, both assemblings are loaded down with trivial details, time-consuming, the whole electromagnetic release mechanism of this structural requirement will be finished the assembling of armature and support before the pedestal of packing into simultaneously, otherwise can bring obstruction to the installation of other devices such as bimetallic element, operating mechanism etc.; When circuit is short-circuited, armature rotates, its brake bar hits the draw bar in the pneumatic operating mechanism, and armature position is corresponding with draw bar, namely, stipulated the position of electromagnetic release mechanism in whole circuit breaker, so the position of armature, shape, size can exert an influence to shape, size and the mounting means of circuit breaker miscellaneous part, thus, the volume of whole circuit breaker be will have influence on, the densification assembling of circuit breaker inner member and the miniaturization of circuit breaker itself are difficult to realize.
Summary of the invention
The purpose of this utility model provides a kind of structure electromagnetic release mechanism that comparatively rationally compactness, assembling and unloading process are comparatively simple, the action of threading off is used for circuit breaker comparatively reliably.
The technical scheme that realizes the utility model purpose is: a kind of electromagnetic release mechanism for circuit breaker comprises support, rotates the armature that is arranged on the described support, places the yoke between support and the armature and be used to armature that the back-moving spring of reseting elasticity is provided; Described support comprises two side and the connecting wall that is connected the two side, is equipped with a pivot groove on each sidewall; Described armature comprises actuation plate, outstanding two pivot boss and be positioned at the L shaped release link at actuation plate top from edge, the actuation plate left and right sides; Each pivot boss of described armature is arranged in the corresponding pivot groove on the rack side wall; Described support is provided with spacing breach at its at least one sidewall; Described armature also is provided with the positive stop lug boss that is arranged in this spacing breach at a lateral edges place adjacent with described spacing breach; Described armature is along in its pivot boss rotation process, and its positive stop lug boss can move back and forth in corresponding spacing breach.
In the such scheme, the opening upwards of described spacing breach; Positive stop lug boss on the described armature is positioned at the pivot boss below.
In the such scheme, the preferred rectangle of the basic configuration of described spacing breach or convex shape.
In the such scheme, an end of described back-moving spring is hooked on the support, and the other end is hooked on the armature release link.
The utlity model has positive effect: in (1) the utility model, described support is provided with spacing breach at its at least one sidewall; Described armature also is provided with the positive stop lug boss that is arranged in this spacing breach at a lateral edges place adjacent with described spacing breach; Described armature is along in its pivot boss rotation process, and its positive stop lug boss can move back and forth in corresponding spacing breach.The utility model is when assembling, only need make spacing lug on the armature be shelved on to reach in the spacing breach armature rotational angle is carried out spacing purpose, assembling and unloading process are also comparatively simple, adopt this structure needn't after being assemblied in armature on the support, stamp out again the operation of positive stop lug boss at the sidewall of support, manufacturing process is simplified to a certain extent, has also guaranteed the reliability of its action of threading off.
(2) in the utility model, the basic configuration of described spacing breach preferably adopts convex shape, this spacing breach can effectively prevent described armature in vertical direction because vibration, make the slippage from pivot groove and spacing breach of its integral body cause this electromagnetic release mechanism to fall apart, make it in conjunction with more solid and reliable, be difficult for breaking down.
Description of drawings
Fig. 1 is a kind of perspective view of the utility model the first structure;
A kind of perspective view of Fig. 2 when to be electromagnetic release mechanism shown in Figure 1 from another angle observe;
Fig. 3 is a kind of perspective view of electromagnetic release mechanism medium-height trestle shown in Figure 1;
Fig. 4 is a kind of perspective view of armature in the electromagnetic release mechanism shown in Figure 1;
Fig. 5 is a kind of perspective view of the utility model the second structure.
Mark shown in the accompanying drawing: support 1, sidewall 11, connecting wall 12, pivot groove 13, spacing breach 14, armature 2, actuation plate 21, pivot boss 22, release link 23, positive stop lug boss 24, yoke 3, back-moving spring 4, hanging hole 5, hooking stopper slot 51.
Embodiment
(embodiment 1)
Fig. 1 to Fig. 4 has shown a kind of embodiment of the present utility model, and wherein Fig. 1 is a kind of perspective view of the utility model the first structure; A kind of perspective view of Fig. 2 when to be electromagnetic release mechanism shown in Figure 1 from another angle observe; Fig. 3 is a kind of perspective view of electromagnetic release mechanism medium-height trestle shown in Figure 1; Fig. 4 is a kind of perspective view of armature in the electromagnetic release mechanism shown in Figure 1.
Present embodiment is a kind of electromagnetic release mechanism for breaker of plastic casing, see Fig. 1 to shown in Figure 4, comprise support 1, rotate the armature 2 that is arranged on the described support 1, place the yoke 3 between support 1 and the armature 2 and be used to armature 2 that the back-moving spring 4 of reseting elasticity is provided; Described support 1 comprises two side 11 and the connecting wall 12 that is connected two side 11, is equipped with a pivot groove 13 on each sidewall 11; Described armature 2 comprises actuation plate 21, outstanding two pivot boss 22 and be positioned at the L shaped release link 23 at actuation plate 21 tops from edge, actuation plate 21 left and right sides; Each pivot boss 22 of described armature 2 is arranged in the corresponding pivot groove 13 on support 1 sidewall 11; Described support 1 is provided with spacing breach 14 at an one sidewall 11; Described armature 2 also is provided with the positive stop lug boss 24 that is arranged in this spacing breach 14 at a lateral edges place adjacent with described spacing breach 14; Described armature 2 is along in its pivot boss 22 rotation processes, and its positive stop lug boss 24 can move back and forth in corresponding spacing breach 14.
The opening upwards of described spacing breach 14; Positive stop lug boss 24 on the described armature 2 is positioned at pivot boss 22 belows.
The basic configuration of described spacing breach 14 is convex shapes, and the opening of this spacing breach 14 is positioned at top, so that the positive stop lug boss 24 of described armature can directly be shelved in this spacing breach 14.
Be equipped with hanging hole 5 on described support 1 connecting wall 12 and armature 2 release links 23; One end of described back-moving spring 4 is hooked in support 1 hanging hole 5, and the other end is hooked in the hanging hole 5 on armature 2 release links 23.
One side of described hanging hole 5 is waves, and described support 1 and release link 23 form a plurality of hooking stopper slots 51 at this wave place, and the two ends of described back-moving spring 4 all are arranged in a corresponding hooking stopper slot 51.
Present embodiment has positive effect: (in 1 present embodiment, described support 1 is provided with spacing breach 14 at its at least one sidewall 11; Described armature 2 also is provided with the positive stop lug boss 24 that is arranged in this spacing breach 14 at a lateral edges place adjacent with described spacing breach 14; Described armature 2 is along in its pivot boss 22 rotation processes, and its positive stop lug boss 24 can move back and forth in corresponding spacing breach 14.Present embodiment is when assembling, only need make spacing lug on the armature be shelved on to reach in the spacing breach armature rotational angle is carried out spacing purpose, assembling and unloading process are also comparatively simple, adopt this structure needn't after being assemblied in armature on the support, stamp out again the operation of positive stop lug boss at the sidewall of support, manufacturing process is simplified to a certain extent, has also guaranteed the reliability of its action of threading off.
(2) in the present embodiment, the basic configuration of described spacing breach 14 preferably adopts convex shape, this spacing breach can effectively prevent described armature in vertical direction because vibration, make the slippage from pivot groove and spacing breach of its integral body cause this electromagnetic release mechanism to fall apart, make it in conjunction with more solid and reliable, be difficult for breaking down.
(3) in the present embodiment, at least one side of described hanging hole 5 is waves, and described support 1 and release link 23 form a plurality of hooking stopper slots 51 at this wave place, and the two ends of described back-moving spring 4 all are arranged in a corresponding hooking stopper slot 51; This kind structure so that back-moving spring in use, can be by being hooked on extension spring two ends hooks in the different hooking stopper slots, thus regulate the reseting elasticity of back-moving spring, thereby so that identical product can be used in the breaker of plastic casing of different model.
(4) in the present embodiment, the hanging hole that a side is the wave wire is set on the described armature, the hanging hole of this shape is when regulating back-moving spring hooking position, and it is comparatively convenient and effectively prevent the advantage that spring comes off to have an operation.
(embodiment 2)
Fig. 5 is a kind of perspective view of the utility model the second structure, has shown the second embodiment of the present utility model.
Present embodiment is substantially the same manner as Example 1, and difference is: as shown in Figure 2, the basic configuration of spacing breach 14 adopts rectangle in the present embodiment.
(embodiment 3)
Present embodiment is substantially the same manner as Example 1, and difference is: described support 1 is equipped with spacing breach 14 at two sidewall 11; The both sides of described armature 2 respectively are provided with a positive stop lug boss 24, and each positive stop lug boss 24 is arranged in a corresponding spacing breach 14.
Obviously, above-described embodiment of the present utility model only is for the utility model example clearly is described, and is not to be restriction to execution mode of the present utility model.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give all execution modes exhaustive.And these belong to apparent variation or the change that connotation of the present utility model extends out and still belong to protection range of the present utility model.