CN204792649U - Circuit breaker - Google Patents
Circuit breaker Download PDFInfo
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- CN204792649U CN204792649U CN201520513756.6U CN201520513756U CN204792649U CN 204792649 U CN204792649 U CN 204792649U CN 201520513756 U CN201520513756 U CN 201520513756U CN 204792649 U CN204792649 U CN 204792649U
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- draw bar
- circuit breaker
- reaction spring
- fixed
- rotating shaft
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Abstract
The utility model provides a circuit breaker, includes the base, arranges base inside short -circuit protection mechanism and tripping device in, short -circuit protection mechanism includes the 2nd reaction spring, relative armature and the yoke that sets up, and armature is connected with the 2nd reaction spring, and when taking place the short circuit, the 2nd reaction spring's pulling force and yoke actuation are overcome to armature, and the tripping device who triggers circuit breaker threads off, short -circuit protection mechanism still includes a reaction spring and short circuit adjusting device, a reaction spring's one end and armature are connected, a reaction spring's the other end and short circuit adjusting device are connected, the adjustable reaction spring's of short circuit adjusting device deformation. The utility model discloses circuit breaker's the adjustable circuit in order to adapt to different rated current of short -circuit protection mechanism, circuit breaker's short -circuit protection mechanism, simple structure is compact, the performance safety and stability.
Description
Technical field
The utility model relates to Low Voltage Electrical Apparatus, particularly a kind of circuit breaker.
Background technology
At present, each pole of low-voltage circuit breaker tripping system comprises an independent trip unit, and each trip unit is arranged in the pedestal that moulded plastic makes, and several identical trip units are arranged in pedestal side by side, forms the tripping system of circuit breaker.
Circuit breaker is the electric current that namely can carry and cut-off under normal loop condition, also can carry and cut-off the switching device of the electric current under abnormal loop condition at the appointed time, have overload protection and short-circuit protection two segment protect function.When overload protection, bimetal leaf heated bending, the amount of bow of bimetal leaf is greater than the gap between sheet metal and draw bar, and draw bar is promoted by bimetal leaf, and draw bar rotates forward and makes circuit breaker tripping, thus realizes the overload protection to circuit and equipment; When short-circuit protection, electric current makes yoke produce magnetic attraction, and adhesive armature moves, and armature strike draw bar rotates forward and makes circuit breaker tripping, thus realizes short-circuit protection.Due to client use under the condition of different rated current time, often need to regulate the overload rating electric current of circuit breaker.But the rated current of traditional breaker of plastic casing is determined, electric current in actual conditions cannot be met and change with the change of electric appliance load service condition.When load current value is excessive, causes the delay protection characteristic of circuit breaker lost efficacy and burnt out circuit or electric equipment, when load current value is too small, causes the regular tripping operation of circuit breaker and equipment cannot normally be worked.
The short-circuit protection of circuit breaker is completed by tripping system; Wherein meet different short circuit current protected mode and have two kinds, one is rely on the reaction spring overcoming different force value to meet; Two be adjustment armature and yoke between yoke distance from having come.But existing breaker of plastic casing mostly just adopts mode one; often can run in process of production spring force value precisely time, producers need to change reaction spring or manual setting spring dynamics, could meet properties of product requirement; production efficiency is low, and properties of product are unstable.
In addition, as shown in Figure 4, only have a tripping screw nail to face draw bar in the overload protecting mechanism of low-voltage circuit breaker, effect draw bar realizes circuit breaker tripping function.This structure is when circuit breaker gear is fixed, very simple and practical, but along with the development of low-voltage circuit breaker, there is the circuit breaker that gear is adjustable, this just requires that the processing dimension of existing circuit breaker tripping system, installation dimension are very accurate, the while of a tripping screw nail during corresponding many gears, just may ensure the performance of adjustable circuit breaker.The plane of draw bar during a screw correspondence different gear and non-linear inclined-plane is only had in adjustable circuit breaker trip unit, be association for all gears screw, a gear mixes up, even if shift function is forbidden in addition, can not adjust, otherwise the gear adjusted can be affected again.The performance extremely unstable of such product, production efficiency is also low.
Summary of the invention
The purpose of this utility model is the defect overcoming prior art, provides a kind of simple and compact for structure, stable performance, the circuit breaker that cost is low.
For achieving the above object, the utility model have employed following technical scheme:
A kind of circuit breaker, comprise pedestal 1, be placed in short current protective mechanism and the tripping mechanism 11 of pedestal 1 inside, described short current protective mechanism comprises the second reaction spring 14, the armature 15 be oppositely arranged and yoke 16, armature 15 is connected, when being short-circuited with the second reaction spring 14, armature 15 overcomes pulling force and yoke 16 adhesive of the second reaction spring 14, and the tripping mechanism 11 triggering circuit breaker is threaded off; Described short current protective mechanism also comprises the first reaction spring 8 and short circuit adjusting device 9; one end of described first reaction spring 8 is connected with armature 15; the other end of described first reaction spring 8 is connected with short circuit adjusting device 9, the deformation of adjustable first reaction spring 8 of short circuit adjusting device 9.
Further, also comprise overload protecting mechanism, described overload protecting mechanism comprises draw bar, bimetal leaf 4, one end of described bimetal leaf 4 is fixed, the other end is provided with touch part 6, described draw bar is provided with shake-up face, described draw bar is articulated with pedestal 1 inside can axial rotation, draw bar is provided with towards the side of bimetal leaf 4 the shake-up face coordinated with touch part 6, after described bimetal leaf 4 heated bending, the tripping mechanism 11 that the shake-up face that touch part 6 touches draw bar makes draw bar rotarily drive circuit breaker is threaded off; Also comprise over-load regulating apparatus, the adjustable draw bar lateral displacement of described over-load regulating apparatus regulates the distance between touch part 6 and draw bar.
Further, also comprise support 12, described short circuit adjusting device 9 comprises short circuit adjusting knob 91 and rotating shaft 92, described rotating shaft 92 and the opposing parallel setting of draw bar; Described over-load regulating apparatus is overload adjusting knob 5, described overload adjusting knob 5 is located at the side of support 12, short circuit adjusting knob 91 is located at the opposite side of support 12, support 12 lower end is located in described rotating shaft 92, and described overload adjusting knob 5 and short circuit adjusting knob 91 are positioned at top in the middle part of rotating shaft 92 and draw bar; The other end of described first reaction spring 8 is fixedly connected with rotating shaft 92, described short circuit adjusting knob 91 is connected with rotating shaft 92, described short circuit adjusting knob 91 rotates and rotating shaft 92 can be driven to rotate the deformation quantity of adjustment first reaction spring 8, and described overload adjusting knob 5 is connected with draw bar and regulates draw bar transverse shifting.
Further, described short circuit adjusting knob 91 is vertical with rotating shaft 92 to be arranged, and the lower end of short circuit adjusting knob 91 is provided with helicoid 911, and the side extension of described rotating shaft 92 is provided with the salient point 922 coordinated with helicoid 911.
Further, one end of described overload adjusting knob 5 is provided with eccentric shaft 51, and the side of described draw bar is protruded to be provided with and regulated projection 33, and described adjustment projection 33 is provided with the adjusting grooves 331 coordinated with eccentric shaft 51.
Further, described draw bar comprises the first draw bar 2 and the second draw bar 3, described first draw bar 2 is articulated with pedestal 1 inside can axial rotation, described second draw bar 3 is slidably connected at the side of the first draw bar 2, described adjustment projection 33 is located at the side of the second draw bar 3, the eccentric shaft 51 of described overload adjusting knob 5 one end with regulate the adjusting grooves 331 of projection 33 to coordinate the second draw bar 3 can be driven along the first draw bar 2 lateral displacement.
Further, the side that described first draw bar 2 is connected with the second draw bar 3 is provided with fixed hook 21, the fixed hook 21 of described first draw bar 2 and the sidewall of the first draw bar 2 form the sliding recess 211 be slidably connected with the second draw bar 3, one end of described second draw bar 3 is placed in sliding recess 211 inside, can along sliding recess 211 transverse shifting.
Further, the shake-up face of described draw bar comprises plane 32 and non-linear inclined-plane 31, described bimetal leaf 4 is respectively equipped with first screw 61 and second screw 62 corresponding with plane and non-linear inclined-plane 31, the adjustable circuit breaker of over-load regulating apparatus first screw 61 when high tap position is mutually corresponding with plane 32, circuit breaker second screw 62 when low-grade location is corresponding with non-linear inclined-plane 31, and the distance between the second screw 62 and non-linear inclined-plane 31 is regulated when circuit breaker low-grade location, described plane 32 and non-linear inclined-plane 31 are located on the second draw bar 3.
Further, also comprise fixed support 13, it is inner that described yoke 16 is fixed at fixed support 13, described armature 15 is fixed at fixed support 13 side, described armature 15 extension is provided with spring fixed arm 155, one end and the spring fixed arm 155 of the second reaction spring 14 are fixed, one end of first reaction spring 8 and the other end of the second reaction spring 14 are fixed at the same position of fixed support 13, the side of described rotating shaft 92 is provided with hook 921, and the other end of described first reaction spring 8 is fixedly connected with hook 921.
Further, it is inner that described support 12 is fixedly installed on pedestal 1, described support 12 comprises adjustment panel 121 and anchor post 122, described support 12 is fixed by anchor post 122 and pedestal 1, described short circuit adjusting knob 91 and overload adjusting knob 5 are located at the both sides regulating panel 121 respectively, also comprise rotating shaft 92, described rotating shaft 92 is positioned at the below regulating panel 121, described anchor post 122 is provided with the through hole of fixed rotating shaft 92, panel end plate 123 is extended at the two ends of described adjustment panel 121 downwards, the end of panel end plate 121 is provided with the fixed groove 123a for fixed rotating shaft 92.
The utility model circuit breaker short circuit protection mechanism increases by the first reaction spring and is connected with armature; the other end of the first reaction spring is connected with short circuit adjusting device; the deformation quantity of the first reaction spring is regulated by short circuit adjusting device; and then the restoring force adjusted from the first reaction spring and the second reaction spring suffered by armature; the short current protective mechanism realizing circuit breaker is adjustable with the circuit adapting to different rated current; the short current protective mechanism of circuit breaker, simple and compact for structure, performance safety is stablized.The draw bar of circuit breaker overload protecting mechanism comprises the first draw bar and the second draw bar; second draw bar and the first draw bar are slidably connected, and over-load regulating apparatus is overload adjusting knob, and adjustable second draw bar of overload adjusting knob is along the first draw bar lateral displacement; structure is simple, stable performance.
Accompanying drawing explanation
Fig. 1 is the internal structure schematic diagram of the utility model circuit breaker;
Fig. 2 is the schematic diagram of the utility model short current protective mechanism;
Fig. 3 is the schematic diagram in another orientation of the utility model short current protective mechanism;
Fig. 4 be the utility model prior art schematic diagram '
Fig. 5 is the schematic diagram of the utility model overload protecting mechanism;
Fig. 6 is the part-structure schematic diagram of the utility model overload protecting mechanism;
Fig. 7 is the structural representation of the utility model draw bar;
Fig. 8 is the structural representation of the utility model second draw bar;
Fig. 9 is the structural representation of the utility model first draw bar;
Figure 10 is the structural representation of the utility model overload adjusting knob and draw bar;
Figure 11 is the schematic diagram of the utility model short circuit adjusting device, over-load regulating apparatus and support;
Figure 12 is the structural representation of the utility model short circuit adjusting knob and rotating shaft.
Embodiment
Below in conjunction with the embodiment that accompanying drawing 1 to 12 provides, further illustrate the embodiment of the utility model circuit breaker.The utility model circuit breaker is not limited to the description of following examples.
As shown in Figure 1, the utility model circuit breaker, comprises pedestal 1, is placed in the short current protective mechanism of pedestal 1 inside, overload protecting mechanism and tripping mechanism 11.Circuit breaker shown in figure is three-pole breaker, and each pole comprises an independent trip unit, and each trip unit is arranged in pedestal 1, and three identical trip units are arranged in pedestal side by side, forms the tripping system of three-pole breaker.Described each trip unit comprises short current protective mechanism and overload protecting mechanism, and described overload protecting mechanism is positioned at above short current protective mechanism, and tripping mechanism 11 is positioned at overload protecting mechanism side.When circuit is short-circuited fault and overload fault, short current protective mechanism and overload protecting mechanism trigger tripping mechanism 11 dropout respectively and cut off circuit.
As Fig. 2; shown in 3; described short current protective mechanism comprises the second reaction spring 14; the armature 15 be oppositely arranged and yoke 16; armature 15 is connected with the second reaction spring 14; when being short-circuited, armature 15 overcomes pulling force and yoke 16 adhesive of the second reaction spring 14, and the tripping mechanism 11 triggering circuit breaker is threaded off.Described short current protective mechanism also comprises fixed support 13, and described armature 15 and yoke 16 are fixed on fixed support 13, also comprise adjustment screw, and described adjustment screw can promote armature 15 and adjust distance between armature 15 and yoke 16.The utility model circuit breaker regulates distance between armature and yoke by arranging adjustment screw, and easy to adjust, degree of regulation is high, and production efficiency is high.
As shown in Figure 2,3, it is inner that described yoke 16 is fixed at fixed support 13, and described armature 15 is fixed at fixed support 13 side, and described adjustment screw and yoke 16 are positioned at the same side of armature 15; Described adjustment screw is adjustment screw 17, and described adjustment screw 17 is fixed on fixed support 13, and adjustment screw 17 offsets with the side, side of armature 15, and the length that adjustable adjustment screw 17 is stretched out promotes armature 15 to adjust the distance between armature 15 and yoke 16.Adjustment screw is adjustment screw 17, and adjustment screw 17 offsets with the side, side of armature 15, adjusts the distance between armature 15 and yoke by the extension elongation of adjustment adjustment screw.Further, the middle part of described armature 15 is provided with rotation axis 151 to two ends extension, described fixed support 13 is provided with the rotation groove 134 coordinated with rotation axis 151, described armature 15 can rotate along rotation axis 151, described armature 15 is divided into armature upper end 15a and armature lower end 15b along its rotation axis 151, described adjustment screw 17 offsets with the side, side of the armature upper end 15a of armature 15, and described yoke 16 is relative with the side of the armature lower end 15b of armature 15.Armature 15 is fixed on fixed support 13 by arranging rotation axis 151 rotation, adjustment screw 17 and armature upper end 15a offset, yoke 16 is relative with armature lower end 15b, when adjustment screw 17 is stretched out and is promoted armature upper end 15a, armature 15 rotates, armature lower end 15b is towards yoke 16 action, and the distance between armature 15 and yoke 16 reduces; When adjustment screw 17 retreats, by the pulling force of the second reaction spring 14, armature upper end 15a is towards adjustment screw 17 action, and armature 15 rotates, and armature lower end 15b is away from yoke 16, and the distance between armature 15 and yoke 16 increases.
As Figure 2-3, described fixed support 13 comprises support trailing flank 131, support left surface 132 and support right flank 133, the two ends that support left surface 132 and support right flank 133 are located at support trailing flank 131 are respectively positioned at the same side of support trailing flank 131, described armature 15 is located at the relative side of support trailing flank 131, and described support trailing flank 131, support left surface 132, support right flank 133 surround the circulus of upper and lower both ends open together with armature 15; Described rotation groove 134 is located on support left surface 132 and support right flank 133 respectively, and described support trailing flank 131 extension is provided with on adjustment screw mounting panel 131a, and described adjustment screw 17 is located on adjustment screw mounting panel 133a.Fixed support 13 reasonable integral structure is compact.
As Figure 2-3, the armature upper end 15a of described armature 15 extends the spring fixed arm 155 being provided with and fixing with the second reaction spring 14, and one end of described armature 15 is connected with the second reaction spring 14, and the other end and the support trailing flank 131 of the second reaction spring 14 are fixed.Fixing of second reaction spring 14.Armature 15 extends the one end being provided with spring fixed arm 155, second reaction spring 14 to be fixed by spring fixed arm 155, and the other end and support trailing flank 131 are fixed.Described armature lower end 15b is provided with limiting card button column 152 to both sides extension, and the side of described fixed support 13 is provided with the limiting card catching groove 135 of restriction limiting card button column 152 displacement.15b both sides, armature lower end are provided with limiting card button column 152 and coordinate with the limiting card catching groove 135 of fixed support 13 two sides, the amplitude that restriction armature 15 rotates.Described armature 15 one end upwards extends the touch pole 153 being provided with and triggering circuit breaker tripping, and the end of touch pole 153 is protruded and is provided with touch head 153a.One end of armature 15 arranges touch pole 153, and during short trouble, armature 15 and yoke 16 adhesive mutually, drive touch pole 153 to rotate, and circuit is cut off in tripping mechanism 11 dropout triggering short-circuiting device.
As Figure 2-3, also comprise bimetal leaf 4, the middle part of described armature 15 is provided with the interspersed groove 154 allowing bimetal leaf 4 pass, described bimetal leaf 4 one end is stretched into fixed support 13 inside and is fixed, the other end stretches out fixed support 13 from interspersed groove 154, and described bimetal leaf 4 other end is provided with the first screw 61 and the second screw 62.One end of bimetal leaf 4 is stretched into fixed support 13 inside and is fixed, and the other end passes from the interspersed groove 154 of fixed support 13.
During installation, first yoke 16 and bimetal leaf 4 are placed in fixed support 13 to be fixed, then armature 15 is fixedly mounted on the side of fixed support 13, one end of bimetal leaf 4 is through the interspersed groove 154 in the middle part of armature 15, one end of second reaction spring 14 is connected with the spring fixed arm 155 of armature upper end 15a, the support trailing flank 131 of the other end and fixed support 13 is fixed, and described adjustment screw 17 is installed on the adjustment screw mounting panel 133a of fixed support 13.
As shown in Figure 5-10; the utility model circuit breaker; described overload protecting mechanism comprises draw bar, bimetal leaf 4; one end of described bimetal leaf 4 is fixed; the other end is provided with touch part 6; described draw bar is provided with shake-up face, and after bimetal leaf 4 heated bending, the shake-up that the touch part 6 of one end touches draw bar is worn the tripping mechanism 11 that dynamic draw bar touches circuit breaker and threaded off.Described draw bar is provided with multiple shake-up face, and described bimetal leaf 4 is provided with multiple screws that shake-up face multiple with draw bar coordinates.The utility model circuit breaker distinguishes multiple shake-up faces of corresponding draw bar by arranging multiple screw in one end of bimetal leaf, when solving many gear draw bar corresponding to a screw, and circuit breaker unstable properties, the problem that production efficiency is low; When different gear, bimetal leaf arranges multiple screw and coordinates with multiple shake-up faces of draw bar, and stable and reliable for performance, production efficiency is high.
As shown in Figure 5-10; the overload protecting mechanism of the utility model circuit breaker; described overload protecting mechanism comprises draw bar, bimetal leaf 4; one end of described bimetal leaf 4 is fixed; the other end is provided with touch part 6; described draw bar is articulated with pedestal 1 inside can axial rotation; draw bar is provided with towards the side of bimetal leaf 4 the shake-up face coordinated with touch part 6; after described bimetal leaf 4 heated bending, the tripping mechanism 11 that the shake-up face that touch part 6 touches draw bar makes draw bar rotarily drive circuit breaker is threaded off.The shake-up face of described draw bar comprises and plane 32 and non-linear inclined-plane 31, described touch part 6 comprises the first screw 61 and the second screw 62, and when circuit breaker is in high tap position, the first screw 61 is corresponding with plane 32, when circuit breaker is in low-grade location, the second screw 62 is corresponding with non-linear inclined-plane 31.The utility model circuit breaker distinguishes the plane of corresponding draw bars and non-linear inclined-plane by arranging two screws in one end of bimetal leaf, when solving many gear draw bar corresponding to a screw, and circuit breaker unstable properties, the problem that production efficiency is low; When different gear, the first screw and the second screw be the plane of corresponding draw bar and non-linear inclined-plane respectively, and distance when can adjust different gear respectively between touch part and draw bar, stable and reliable for performance, production efficiency is high.
As shown in Figure 5-10, also comprise over-load regulating apparatus, the adjustable draw bar lateral displacement of described over-load regulating apparatus, make circuit breaker first screw 61 when high tap position mutually corresponding with plane 32, circuit breaker second screw 62 when low-grade location is corresponding with non-linear inclined-plane 31, and regulates the distance between the second screw 62 and non-linear inclined-plane 31 when circuit breaker low-grade location.By arranging over-load regulating apparatus, the distance of adjustable circuit breaker when different gear between touch part 6 and draw bar, and the distance between the second screw 62 and non-linear inclined-plane 31 is regulated when circuit breaker low-grade location; Circuit breaker is when for different circuit load, and rated current is adjustable.
As shown in Figure 7, described draw bar comprises the first draw bar 2 and the second draw bar 3, described first draw bar 2 is articulated with the chassis interior of pedestal 1, and described second draw bar 3 is slidably connected at the side of the first draw bar 2, and the side of the second draw bar 3 is located on described plane 32 and non-linear inclined-plane 31; Described over-load regulating apparatus is connected with the second draw bar 3, and adjustable second draw bar 3 is along the first draw bar 2 lateral displacement.Draw bar comprises the first draw bar 2 and the second draw bar 3, second draw bar 3 and the first draw bar 2 and is slidably connected, and over-load regulating apparatus and adjustable second draw bar 3 of the second draw bar 3 are along the first draw bar 2 lateral displacement.
As shown in Figure 1, described short circuit adjusting device 9 comprises short circuit adjusting knob 91 and rotating shaft 92, described rotating shaft 92 and the opposing parallel setting of draw bar; Described over-load regulating apparatus is overload adjusting knob 5, described overload adjusting knob 5 is located at the side of support 12, short circuit adjusting knob 91 is located at the opposite side of support 12, support 12 lower end is located in described rotating shaft 92, and described overload adjusting knob 5 and short circuit adjusting knob 91 are positioned at top in the middle part of rotating shaft 92 and draw bar; The other end of described first reaction spring 8 is fixedly connected with rotating shaft 92, described short circuit adjusting knob 91 is connected with rotating shaft 92, described short circuit adjusting knob 91 rotates and rotating shaft 92 can be driven to rotate the deformation quantity of adjustment first reaction spring 8, and described overload adjusting knob 5 is connected with draw bar and regulates draw bar transverse shifting.
As shown in Fig. 5,10, described over-load regulating apparatus is overload adjusting knob 5, it is inner that described support 12 is fixed on pedestal 1, described adjusting knob 5 is fixed on support 12, one end of described overload adjusting knob 5 is provided with eccentric shaft 51, the side of described second draw bar 3 is protruded to be provided with and is regulated projection 33, and described adjustment projection 33 is provided with the adjusting grooves 331 coordinated with eccentric shaft 51.Over-load regulating apparatus is adjusting knob 5, and the eccentric shaft 51 of one end of adjusting knob 5 coordinates with the adjusting grooves 331 of the second draw bar 3, and rotate adjusting knob 5, the eccentric shaft 51 of adjusting knob 5 one end stirs the second draw bar 3 along the first draw bar 2 transverse shifting.
As Figure 7-9, the side that described first draw bar 2 is connected with the second draw bar 3 is provided with fixed hook 21, the fixed hook 21 of described first draw bar 2 and the sidewall of the first draw bar 2 form the sliding recess 211 be slidably connected with the second draw bar 3, one end of described second draw bar 3 is placed in sliding recess 211 inside, can along sliding recess 211 transverse shifting.The fixed hook 21 of the side of the first draw bar 2 and the sidewall of the first draw bar 2 form the sliding recess 211 that the second draw bar 3 slides, and described second draw bar 3 is slidably connected by sliding recess 211 and the first draw bar 2, along the first draw bar 2 transverse shifting.The sidewall of described first draw bar 2 is provided with and is connected with the second draw bar 3 and limits the spacing hole 22 of the second draw bar 3 stroke.The sidewall of the first draw bar 2 is provided with spacing hole 22, is used for being connected with the second draw bar and limiting the stroke of the second draw bar 3 movement.
As shown in Figure 9, described first draw bar 2 comprises rotating shaft 23, and the first draw bar 2 can along rotating shaft 23 axial rotation, and the two ends extension of rotating shaft 23 is provided with to side and rotates side plate 24, described spacing hole 22 is located at two pieces and is rotated on side plate 24, and described sliding recess 211 is located at the middle part of rotating shaft 23.The structure of the first draw bar 2 simply saves gathers, and designs ingenious.
Shown in Fig. 1, three-pole breaker arranges three bimetal leafs 4 respectively, each bimetal leaf 4 is arranged respectively the first screw 61 and the second screw 62, the side of described second draw bar 32 arranges three groups of planes 32 corresponding with the first screw 61 and the second screw 62 and non-linear inclined-plane 31 respectively.Wherein any pole circuit breaker generation overload fault, the first screw 61 or the second screw 62 just can touch the plane 32 corresponding with it and non-linear inclined-plane 31 drives draw bar to rotate, and then drive tripping mechanism to thread off, short-circuiting device is stable and reliable for performance.
As shown in Figure 1, described armature 15 one end upwards extends to be provided with triggers the touch pole 153 of circuit breaker tripping, and the end of touch pole 153 is protruded and is provided with touch head 153a, and the touch head 153a of described touch pole 153 is towards the plane 32 of the second draw bar 3.During the fault that is short-circuited; the armature 15 of short current protective mechanism and yoke 16 adhesive mutually; armature 15 rotates, and the plane 32 driving the touch head 153a of the touch pole 153 of one end setting to hit the second draw bar 3 of overload protecting mechanism is rotated, and drives tripping mechanism 11 to thread off further.Shown in figure, three pole releases comprise three groups of short circuit tripping mechanisms, and it is corresponding with the plane 32 of draw bar that three blocks of armature 15 is respectively equipped with touch pole 153, when any pole circuit breaker is short-circuited, tripping mechanism 11 all can be driven to thread off, drive whole circuit breaker trip circuit.The touch pole 153 that armature 15 one end is arranged also can directly interact with tripping mechanism 11, directly the dropout of promotion tripping mechanism.
As shown in Fig. 1,5,11,12; the short current protective mechanism of the utility model circuit breaker comprises the second reaction spring 14; the armature 15 be oppositely arranged and yoke 16; armature 15 is connected with the second reaction spring 14; when being short-circuited; armature 15 overcomes pulling force and yoke 16 adhesive of the second reaction spring 14, and the tripping mechanism 11 triggering circuit breaker is threaded off.Described short current protective mechanism also comprises the first reaction spring 8 and short circuit adjusting device 9; one end of described first reaction spring 8 is connected with armature 15; the other end of described first reaction spring 8 is connected with short circuit adjusting device 9, the deformation quantity of adjustable first reaction spring 8 of short circuit adjusting device 9.The utility model circuit breaker increases by the first reaction spring and is connected with armature; the other end of the first reaction spring is connected with short circuit adjusting device; the deformation quantity of the first reaction spring is regulated by short circuit adjusting device; and then the restoring force adjusted from the first reaction spring and the second reaction spring suffered by armature; the short current protective mechanism realizing circuit breaker is adjustable with the circuit adapting to different rated current; the short current protective mechanism of circuit breaker, simple and compact for structure, performance safety is stablized.
As shown in Fig. 5,11,12, described short circuit adjusting device 9 comprises short circuit adjusting knob 91 and rotating shaft 92, also comprise support 12, it is inner that described support 12 is fixed on pedestal 1, described short circuit adjusting knob 91 is arranged on the side of support 12, described rotating shaft 92 pivotable is installed on the opposite side of support 12, the other end of described first reaction spring 8 is fixedly connected with rotating shaft 92, described short circuit adjusting knob 91 is connected with rotating shaft 92, and described short circuit adjusting knob 91 rotates and rotating shaft 92 can be driven to rotate the deformation quantity of adjustment first reaction spring 8.Described short circuit adjusting device comprises short circuit adjusting knob 91 and rotating shaft 92, short circuit adjusting knob 91 is connected with rotating shaft, rotating shaft 92 is connected with the other end of the first reaction spring 8, rotates short circuit adjusting knob 91 and rotating shaft 92 can be driven to rotate thus drive the first reaction spring 8 that deformation occurs.One end extension of described armature 15 is provided with spring fixed arm 155, and spring fixed arm 155 is provided with spring fixed hole, and one end of described second reaction spring 14 is connected with the spring fixed hole 155a of spring fixed arm 155 with one end of the first reaction spring 8.First reaction spring 8 is connected with the spring fixed hole of armature 15 with one end of the second reaction spring 14 simultaneously, designs ingenious, reliable and stable.
As shown in figure 12, it is inner that described yoke 16 is fixed at fixed support 13, described armature 15 is fixed at fixed support 13 side, described armature 15 extension is provided with spring fixed arm 155, one end and the spring fixed arm 155 of the second reaction spring 14 are fixed, one end of first reaction spring 8 and the other end of the second reaction spring 14 are fixed at the same position of fixed support 13, and the side of described rotating shaft 92 is provided with hook 921, and the other end of described first reaction spring 8 is fixedly connected with hook 921.The lower end of described short circuit adjusting knob 91 is provided with helicoid 911, and the side extension of described rotating shaft 92 is provided with the salient point 922 coordinated with helicoid 911.One end of described rotating shaft 92 is provided with hook 921 and is connected with the other end of the first reaction spring 8, connects reliably fastening.The lower end of short circuit adjusting knob 91 is provided with helicoid 911, and the side of rotating shaft 92 is provided with salient point 922 and cooperatively interacts with helicoid 911.When rotating short circuit adjusting knob 91, the salient point 922 of rotating shaft 92 rotates upwards or rotates along the helicoid 911 of the lower end of short circuit adjusting knob 91 downwards, and then drive rotating shaft 92 is rotated.
As shown in figure 11, it is inner that described support 12 is fixedly installed on pedestal 1, described support 12 comprises adjustment panel 121 and anchor post 122, described support 12 is fixed by anchor post 122 and pedestal 1, described short circuit adjusting knob 91 and overload adjusting knob 5 are located at the both sides regulating panel 121 respectively, and described short circuit adjusting knob 91 and overload adjusting knob 5 regulate rated current during short circuit and the overload of circuit breaker respectively.Described rotating shaft 92 is positioned at the below regulating panel 121, described anchor post 122 is provided with the through hole of fixed rotating shaft 92, panel end plate 123 is extended at the two ends of described adjustment panel 121 downwards, and the end of panel end plate 121 is provided with the fixed groove 123a for fixed rotating shaft 92.
During installation, first the second draw bar 3 is connected with the first draw bar 2, the interior formation of sliding recess 211 that second draw bar 3 is placed in the first draw bar 2 is slidably connected, then the first draw bar 2 is articulated with on pedestal 1, it is inner that support 12 is fixed on pedestal 1, short circuit adjusting knob 91 and overload adjusting knob 5 are installed on the both sides regulating panel 121 respectively, and the eccentric shaft 51 of overload adjusting knob 5 one end is placed in the adjusting grooves 331 of the second draw bar 3; Rotating shaft 92 is installed on support 12, and one end helicoid 911 of short circuit adjusting knob 91 coordinates with the salient point 922 of rotating shaft 92, and the first reaction spring 8 is fixedly connected with armature 15, and the hook 921 of rotating shaft 92 is fixedly connected with the other end of the first reaction spring 8.
Obviously, the structure of above-mentioned circuit breaker can in the circuit breaker of more multi-pole, or the circuit breaker of other models.
Above content is in conjunction with concrete preferred implementation further detailed description of the utility model, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, without departing from the concept of the premise utility, some simple deduction or replace can also be made, all should be considered as belonging to protection range of the present utility model.
Claims (10)
1. a circuit breaker, comprise pedestal (1), be placed in the inner short current protective mechanism of pedestal (1) and tripping mechanism (11), described short current protective mechanism comprises the second reaction spring (14), the armature (15) be oppositely arranged and yoke (16), armature (15) is connected with the second reaction spring (14), when being short-circuited, armature (15) overcomes pulling force and yoke (16) adhesive of the second reaction spring (14), the tripping mechanism (11) triggering circuit breaker is threaded off, it is characterized in that: described short current protective mechanism also comprises the first reaction spring (8) and short circuit adjusting device (9), one end of described first reaction spring (8) is connected with armature (15), the other end of described first reaction spring (8) is connected with short circuit adjusting device (9), the deformation of adjustable first reaction spring (8) of short circuit adjusting device (9).
2. circuit breaker according to claim 1, it is characterized in that: also comprise overload protecting mechanism, described overload protecting mechanism comprises draw bar, bimetal leaf (4), one end of described bimetal leaf (4) is fixed, the other end is provided with touch part (6), described draw bar is provided with shake-up face, described draw bar is articulated with pedestal (1) inside can axial rotation, draw bar is provided with towards the side of bimetal leaf (4) the shake-up face coordinated with touch part (6), after described bimetal leaf (4) heated bending, the tripping mechanism (11) that the shake-up face of touch part (6) touching draw bar makes draw bar rotarily drive circuit breaker is threaded off, also comprise over-load regulating apparatus, the adjustable draw bar lateral displacement of described over-load regulating apparatus regulates the distance between touch part (6) and draw bar.
3. circuit breaker according to claim 2, it is characterized in that: also comprise support (12), described short circuit adjusting device (9) comprises short circuit adjusting knob (91) and rotating shaft (92), described rotating shaft (92) and the opposing parallel setting of draw bar; Described over-load regulating apparatus is overload adjusting knob (5), described overload adjusting knob (5) is located at the side of support (12), short circuit adjusting knob (91) is located at the opposite side of support (12), support (12) lower end is located in described rotating shaft (92), and described overload adjusting knob (5) and short circuit adjusting knob (91) are positioned at top in the middle part of rotating shaft (92) and draw bar; The other end of described first reaction spring (8) is fixedly connected with rotating shaft (92), described short circuit adjusting knob (91) is connected with rotating shaft (92), the rotation of described short circuit adjusting knob (91) can drive rotating shaft (92) to rotate the deformation quantity of adjustment first reaction spring (8), and described overload adjusting knob (5) is connected with draw bar and regulates draw bar transverse shifting.
4. circuit breaker according to claim 3, it is characterized in that: described short circuit adjusting knob (91) is vertical with rotating shaft (92) to be arranged, the lower end of short circuit adjusting knob (91) is provided with helicoid (911), and the side extension of described rotating shaft (92) is provided with the salient point (922) coordinated with helicoid (911).
5. circuit breaker according to claim 3, it is characterized in that: one end of described overload adjusting knob (5) is provided with eccentric shaft (51), the side of described draw bar is protruded to be provided with and is regulated projection (33), and described adjustment projection (33) is provided with the adjusting grooves (331) coordinated with eccentric shaft (51).
6. circuit breaker according to claim 5, it is characterized in that: described draw bar comprises the first draw bar (2) and the second draw bar (3), described first draw bar (2) is articulated with pedestal (1) inside can axial rotation, described second draw bar (3) is slidably connected at the side of the first draw bar (2), described adjustment projection (33) is located at the side of the second draw bar (3), the eccentric shaft (51) of described overload adjusting knob (5) one end with regulate the adjusting grooves (331) of projection (33) to coordinate the second draw bar (3) can be driven along the first draw bar (2) lateral displacement.
7. circuit breaker according to claim 6, it is characterized in that: the side that described first draw bar (2) is connected with the second draw bar (3) is provided with fixed hook (21), the fixed hook (21) of described first draw bar (2) and the sidewall of the first draw bar (2) form the sliding recess (211) be slidably connected with the second draw bar (3), one end of described second draw bar (3) is placed in sliding recess (211) inside, can along sliding recess (211) transverse shifting.
8. circuit breaker according to claim 7, it is characterized in that: the shake-up face of described draw bar comprises plane (32) and non-linear inclined-plane (31), described bimetal leaf (4) is respectively equipped with first screw (61) corresponding with plane and non-linear inclined-plane (31) and the second screw (62), the adjustable circuit breaker of over-load regulating apparatus first screw (61) when high tap position is mutually corresponding with plane (32), circuit breaker second screw (62) when low-grade location is corresponding with non-linear inclined-plane (31), and the distance between the second screw (62) and non-linear inclined-plane (31) is regulated when circuit breaker low-grade location, described plane (32) and non-linear inclined-plane (31) are located on the second draw bar (3).
9. circuit breaker according to claim 3, it is characterized in that: also comprise fixed support (13), it is inner that described yoke (16) is fixed at fixed support (13), described armature (15) is fixed at fixed support (13) side, described armature (15) extension is provided with spring fixed arm (155), one end of second reaction spring (14) and spring fixed arm (155) are fixed, one end of first reaction spring (8) and the other end of the second reaction spring (14) are fixed at the same position of fixed support (13), the side of described rotating shaft (92) is provided with hook (921), the other end of described first reaction spring (8) is fixedly connected with hook (921).
10. circuit breaker according to claim 3, it is characterized in that: it is inner that described support (12) is fixedly installed on pedestal (1), described support (12) comprises adjustment panel (121) and anchor post (122), described support (12) is fixed by anchor post (122) and pedestal (1), described short circuit adjusting knob (91) and overload adjusting knob (5) are located at the both sides regulating panel (121) respectively, also comprise rotating shaft (92), described rotating shaft (92) is positioned at the below regulating panel (121), described anchor post (122) is provided with the through hole of fixed rotating shaft (92), panel end plate (123) is extended at the two ends of described adjustment panel (121) downwards, the end of panel end plate (121) is provided with the fixed groove (123a) for fixed rotating shaft (92).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520513756.6U CN204792649U (en) | 2015-07-16 | 2015-07-16 | Circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520513756.6U CN204792649U (en) | 2015-07-16 | 2015-07-16 | Circuit breaker |
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| Publication Number | Publication Date |
|---|---|
| CN204792649U true CN204792649U (en) | 2015-11-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520513756.6U Active CN204792649U (en) | 2015-07-16 | 2015-07-16 | Circuit breaker |
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| CN (1) | CN204792649U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106229237A (en) * | 2016-09-26 | 2016-12-14 | 常熟开关制造有限公司(原常熟开关厂） | The trip gear of low-pressure plastic shell circuit breaker |
| WO2017097191A1 (en) * | 2015-12-08 | 2017-06-15 | 上海电科电器科技有限公司 | Overload protection mechanism with long delay |
| CN106252177B (en) * | 2016-09-26 | 2018-05-22 | 常熟开关制造有限公司(原常熟开关厂） | The trip gear of low-pressure plastic shell circuit breaker |
| CN110289197A (en) * | 2019-07-05 | 2019-09-27 | 苏州未来电器股份有限公司 | A kind of overvoltage/undervoltage protection mechanism with holding function |
| CN114388316A (en) * | 2021-12-24 | 2022-04-22 | 上海京硅智能技术有限公司 | Circuit breaker contact system |
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2015
- 2015-07-16 CN CN201520513756.6U patent/CN204792649U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017097191A1 (en) * | 2015-12-08 | 2017-06-15 | 上海电科电器科技有限公司 | Overload protection mechanism with long delay |
| CN106229237A (en) * | 2016-09-26 | 2016-12-14 | 常熟开关制造有限公司(原常熟开关厂） | The trip gear of low-pressure plastic shell circuit breaker |
| CN106252177B (en) * | 2016-09-26 | 2018-05-22 | 常熟开关制造有限公司(原常熟开关厂） | The trip gear of low-pressure plastic shell circuit breaker |
| CN106229237B (en) * | 2016-09-26 | 2018-06-05 | 常熟开关制造有限公司(原常熟开关厂） | The trip gear of low-pressure plastic shell circuit breaker |
| CN110289197A (en) * | 2019-07-05 | 2019-09-27 | 苏州未来电器股份有限公司 | A kind of overvoltage/undervoltage protection mechanism with holding function |
| CN114388316A (en) * | 2021-12-24 | 2022-04-22 | 上海京硅智能技术有限公司 | Circuit breaker contact system |
| CN114388316B (en) * | 2021-12-24 | 2024-03-12 | 上海京硅智能技术有限公司 | Circuit breaker contact system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Wenzhou Zhengtai Electrical Technology Co., Ltd Assignor: Zhejiang Chint Electrics Co.,Ltd. Contract record no.: X2020330000078 Denomination of utility model: Circuit breaker Granted publication date: 20151118 License type: Common License Record date: 20201021 |
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| EE01 | Entry into force of recordation of patent licensing contract |