CN202120837U

CN202120837U - Circuit breaker operating mechanism

Info

Publication number: CN202120837U
Application number: CN 201120222406
Authority: CN
Inventors: 周健; 宋成爱; 陆飞
Original assignee: FORETECH ELEC APP (JIANGSU) CORP Ltd
Current assignee: FORETECH ELEC APP (JIANGSU) CORP Ltd
Priority date: 2011-06-28
Filing date: 2011-06-28
Publication date: 2012-01-18
Anticipated expiration: 2021-06-28

Abstract

The utility model discloses a circuit breaker operating mechanism, which comprises a main support, a connecting-rod linkage mechanism, a lock catch mechanism and a tension spring, and is characterized in that the connecting-rod linkage mechanism comprises an operating handle, a first connecting rod, a second connecting rod and a third connecting rod that are connected in order via a connection bolt, the operating handle is arranged at the upper part of the main support in a pin joint manner, a first torsion spring is arranged on a pivot, the end part of the third connecting rod is arranged at the lower part of the main support in a pin joint manner, two ends of the tension spring are respectively fixed on the main support and the third connecting rod, the lock catch mechanism comprises a lock catch bar and a jumping latch, one end of the lock catch bar is arranged at the middle part of the main support in a pin joint manner, the other end of the lock catch bar is provided with a linear-type groove, the connection bolt connecting the first connecting rod with the second connecting rod passes through the linear-type groove at the same time, the jumping latch is arranged on the main support in a pin joint manner and is arranged at one side of the lock catch bar, a second torsion spring is arranged on the pin joint shaft of the jumping latch, and the jumping latch and the lock catch bar are respectively provided with action parts that are in mutual contact. The circuit breaker operating mechanism is simple in structure, small in size, and flexible and convenient in control.

Description

Circuit breaker operation mechanism

Technical field

the utility model belongs to breaker technical field, more specifically to a kind of circuit breaker operation mechanism.

Background technology

are present, and along with the development of architectural electricity and building automation, the application of circuit breaker in the house power distribution system more and more widely.The existing one type of miniature circuit breaker that applies in the house power distribution system is made up of Switch main body and alarm module two parts usually; Wherein Switch main body is usually again by the main circuit current release, subsidiary loop current-release device, main contact; Auxiliary contact; Operating mechanism, electromagnetic system, arc quenching system are formed, and operating mechanism is determining the realization function of combined floodgate, tripping operation as the core institution of this type switch.

existing circuit breaker operating mechanism all is fixed on the case for circuit breaker inboard usually, and controls the motion of movable contact bridge by operating grip and connecting rod link gear, realizes that movable contact bridge and this just are fixed on the folding of the stationary contact bridge in the case for circuit breaker.Yet the existing circuit breaker operating mechanism is complex structures all usually, and volume is too fat to move, and controls inconvenience, is not suitable for being assemblied in the miniature circuit breaker shell.

Summary of the invention

the utility model purpose is: provide a kind of simple in structure, advantages of small volume and control flexible circuit breaker operation mechanism especially is fit to be assemblied in the miniature circuit breaker shell.

The technical scheme of the utility model is: a kind of circuit breaker operation mechanism comprises main support, connecting rod link gear and latching device; It is characterized in that said connecting rod link gear comprises by connecting operating grip, first connecting rod, second connecting rod and the third connecting rod that bolt links to each other in proper order; Wherein said operating grip is articulated in main support top; Be equipped with first torsion spring on the pivot, the end of said third connecting rod is articulated in the main support bottom; Also comprise extension spring, said extension spring two ends are separately fixed on main support and the third connecting rod; Said latching device comprises locking-bar and tripping, and wherein locking-bar one end is articulated in the main support middle part, and the other end is provided with the linear pattern groove, and the connection bolt that connects first connecting rod and second connecting rod passes said linear pattern groove simultaneously; Said tripping is articulated on the main support, and is positioned at locking-bar one side, is equipped with second torsion spring on the drive-connecting shaft of tripping; Be equipped with competing service portion on said tripping and the locking-bar.

are further, and main support described in the utility model comprises first support and second support, and first, second, the 3rd and the 4th through being parallel to each other between said first support and second support is connected and fixed; First the top that is positioned at main support wherein, second below that is positioned at main support, and the 3rd and the 4th be between first and second, and the 3rd is positioned at the 4th right side; Said operating grip is rotatably installed on first, and an end of this operating grip connects bolt through first and is connected with first connecting rod; First connecting rod connects bolt through second and is connected with second connecting rod; Second connecting rod connects bolt through the 3rd and is connected with third connecting rod; The other end of third connecting rod is provided with slotted hole; And be set in rotationally on second by this slotted hole, first torsion spring is housed in the operating grip, first torsion spring has two arms; Wherein the first arm acts on the operating grip, and second arm acts in the deduction hole on first support.

further; The top of first support described in the utility model is provided with the first additional bending arm; The first support inboard has first convex shoulder in addition; And the described second support inboard has second convex shoulder relative with first convex shoulder, and the middle part of second support also is provided with the second additional bending arm simultaneously; One end of said locking-bar is provided with the locking-bar through hole, and first convex shoulder on this locking-bar through hole and first support and second convex shoulder on second support match, thereby make locking-bar be supported on rotationally on first support and second support; Second connects bolt is arranged in the linear pattern groove on the locking-bar, thereby can slide within it; Locking-bar has the 3rd convex shoulder at this end with linear pattern groove; Has a triangular groove in the said tripping; Second torsion spring is housed in this triangular groove; Second torsion spring has two arms, and wherein the first arm acts in the tripping, and second arm acts on the first additional bending arm of first support; An end of tripping also has a tripping through hole in addition, and tripping is sheathed on the 3rd by this tripping through hole rotationally; The tripping other end is provided with a boss, and the 3rd convex shoulder on the locking-bar is close on this boss.

are further again; One end of third connecting rod described in the utility model is provided with a nose frame; Riveted joint movable contact bridge on the nose frame; The other end of third connecting rod has the additional bending arm of a connecting rod, and the lower end of said extension spring hangs on the additional bending arm of connecting rod, and the extension spring upper end then hangs on the additional bending arm of second on second support.

further, the periphery of first support described in the utility model or second support is provided with some bending arms that are installed on the case for circuit breaker that are used for fixing.

The course of action of the utility model is described below:

are when clockwise rotating the operating grip combined floodgate; Operating grip drives first connecting rod, first connecting rod and drives second connecting rod, second connecting rod and drive the pulling force that third connecting rod overcomes extension spring and make the movable contact bridge closed towards the direction of stationary contact bridge (stationary contact bridge predetermined fixed is inner at case for circuit breaker, and is positioned at movable contact bridge top); When mechanism closed a floodgate fully, first connects bolt was centered close to first center connects the bolt center with second line of centres right side, and this moment, entire mechanism was in stable make position.

The utility model has the advantages that:

This circuit breaker operation mechanism that the utility model provides can not only satisfy the needs of the normal connection disconnection of circuit breaker; And simple in structure, advantages of small volume is controlled flexible; It can be manufactured into a module independently, especially is fit to be assemblied in the miniature circuit breaker shell.

Description of drawings

Fig. 1 is the axonometric drawing of the utility model;

Fig. 2 is the perspective view at a kind of visual angle of main support of the utility model;

Fig. 3 is the perspective view at another visual angle of main support;

Fig. 4 is the main TV structure figure (circuit breaker " separating brake " state) of the utility model;

Fig. 5 is the main TV structure figure (circuit breaker " combined floodgate " state) of the utility model;

Fig. 6 to Fig. 8 is that the utility model is by the process sketch map of separating brake position to closing position.

wherein: 11, first support; 12, second support; 13, first; 14, the 3rd; 15, the 4th; 16, second; 17, the first bending arm; 18, the second bending arm; 19, the 3rd bending arm; 20, the first additional bending arm; 21, first convex shoulder; 22, second convex shoulder; 23, the second additional bending arm; 31, operating grip; 32, first connects bolt; 33, first connecting rod; 34, second connects bolt; 35, second connecting rod; 36, the 3rd connects bolt; 37, third connecting rod; 40, first torsion spring; 41, the first arm; 42, second arm; 45, locking-bar; 46, locking-bar through hole; 47, linear pattern groove; 48, the 3rd convex shoulder; 50, tripping; 51, triangular groove; 52, second torsion spring; 53, the first arm; 54, second arm; 55, tripping through hole; 56, boss; 60, nose frame; 63, movable contact bridge; 65, the additional bending arm of connecting rod; 70, extension spring; 80, stationary contact bridge; 83, first connects the bolt center; 84, first center; 85, the line of centres; 86, second connects the bolt center.

Embodiment

below in conjunction with accompanying drawing, specify the technical scheme of the utility model.

Fig. 1 has disclosed the axonometric drawing of the utility model, shows the overall structure of the utility model, and for concrete parts wherein, in conjunction with decomposition view, Fig. 2 is described below to Fig. 5:

are at first with reference to figure 2,3; Show the main support of the utility model: this main support comprises first support 11 and second support 12, and first 13, second 16, the 3rd 14 and the 4th 15 through being parallel to each other between said first support 11 and second support 12 are connected and fixed; First 13 the top that is positioned at main support wherein, second 16 below that is positioned at main support, and the 3rd 14 and the 4th 15 between first 13 and second 16, and the 3rd 14 is positioned at the 4th 15 right sides.The periphery of described first support 11 has and is used for fixing the first bending arm, 17, the second bending arms 18 and the 3rd bending arm 19 that is installed on the case for circuit breaker; The top of first support 11 also is provided with the first additional bending arm 20; First support, 11 inboards have first convex shoulder 21 in addition; And second support, 12 inboards have second convex shoulder 22 relative with first convex shoulder 21, and the middle part of second support 12 also is provided with the second additional bending arm 23 simultaneously.

With reference to figure 4, shown in 5, connecting rod link gear and latching device in the present embodiment are following:

said operating grip 31 is rotatably installed on first 13, and an end of this operating grip 31 connects bolt 32 through first and is connected with first connecting rod 33; First connecting rod 33 connects bolt 34 through second and is connected with second connecting rod 35; Second connecting rod 35 connects bolt 36 through the 3rd and is connected with third connecting rod 37; 37 other ends of third connecting rod are provided with slotted hole, and are set in rotationally on second 16 by this slotted hole.First torsion spring, 40, the first torsion springs 40 are housed in the operating grip 31 have two arms, wherein the first arm 41 acts on the operating grip 31, and second arm 42 acts in the deduction hole (not marking among the figure) on first support 11.

One end of said locking-bar 45 is provided with locking-bar through hole 46; First convex shoulder 21 on this locking-bar through hole 46 and first support 11 and second convex shoulder 22 on second support 12 match, thereby make locking-bar 45 be supported on rotationally on first support 11 and second support 12.The other end of locking-bar 45 has always linear groove 47, the second connect bolts 34 to be arranged in the linear pattern groove 47, thereby can slide within it; Locking-bar 45 has the 3rd convex shoulder 48 at this end with linear pattern groove 47.Has a triangular groove 51 in the said tripping 50; Second torsion spring 52 is housed in this triangular groove 51; Second torsion spring 52 has two arms, and wherein the first arm 53 acts in the tripping 50, and second arm 54 acts on the first additional bending arm 20 of first support 11; An end of tripping 50 also has a tripping through hole 55 in addition, and tripping 50 is sheathed on the 3rd 14 by this tripping through hole 55 rotationally.Tripping 50 other ends are provided with a boss 56, and the 3rd convex shoulder 48 on the locking-bar 45 is close on this boss 56, thereby make whole operation mechanism on the snap close position, enough become snap close.

the utility model is provided with a nose frame 60 at an end of said third connecting rod 37; Riveted joint movable contact bridge 63 on the nose frame 60; The other end of third connecting rod 37 has the additional bending arm 65 of a connecting rod; The utility model also has an extension spring 70, and the lower end of this extension spring 70 hangs on the additional bending arm 65 of connecting rod, and extension spring 70 upper ends then hang on the additional bending arm 23 of second on second support 12.

Show the course of action of present embodiment with reference to figure 6-8, be described below:

are when clockwise rotating operating grip 31 combined floodgates; The pulling force that operating grip 31 drive first connecting rods 33, first connecting rod 33 drive second connecting rods 35, second connecting rod 35 drive third connecting rods 37 overcome extension spring 70 makes movable contact bridge 63 closed towards the direction of stationary contact bridge 80 (stationary contact bridge 80 predetermined fixed are inner at case for circuit breaker, and are positioned at movable contact bridge 63 tops); When mechanism closed a floodgate fully, first connects bolt center 83 was positioned at first center 84 connects bolt center 86 with second the line of centres 85 right sides, and this moment, entire mechanism was in stable make position.

Present embodiment has following advantage:

This circuit breaker operation mechanism that present embodiment provides can not only satisfy the needs of the normal connection disconnection of circuit breaker; And simple in structure, advantages of small volume is controlled flexible; It can be manufactured into a module independently, especially is fit to be assemblied in the miniature circuit breaker shell.

the foregoing description provides to being familiar with personnel in this area and realizes or use the utility model; Being familiar with those skilled in the art can be under the situation of the utility model thought that does not break away from the utility model; The foregoing description is made various modifications or variation; Thereby the protection range of the utility model do not limit by the foregoing description, and should meet the maximum magnitude of the inventive features that claims mention.

Claims

1. a circuit breaker operation mechanism comprises main support, connecting rod link gear and latching device; It is characterized in that said connecting rod link gear comprises by connecting operating grip (31), first connecting rod (33), second connecting rod (35) and the third connecting rod (37) that bolt links to each other in proper order; Wherein said operating grip (31) is articulated in main support top; Be equipped with first torsion spring (40) on the pivot, the end of said third connecting rod (37) is articulated in the main support bottom; Also comprise extension spring (70), said extension spring (70) two ends are separately fixed on main support and the third connecting rod (37); Said latching device comprises locking-bar (45) and tripping (50); Wherein locking-bar (45) one ends are articulated in the main support middle part; The other end is provided with linear pattern groove (47), and the connection bolt that connects first connecting rod (33) and second connecting rod (35) passes said linear pattern groove (47) simultaneously; Said tripping (50) is articulated on the main support, and is positioned at locking-bar (45) one sides, is equipped with second torsion spring (52) on the drive-connecting shaft of tripping (50); Be equipped with competing service portion on said tripping (50) and the locking-bar (45).

2. circuit breaker operation mechanism according to claim 1; It is characterized in that said main support comprises first support (11) and second support (12), be connected and fixed through first (13), second (16) that are parallel to each other, the 3rd (14) and the 4th (15) between said first support (11) and second support (12); Wherein first (13) are positioned at the top of main support; Second (16) are positioned at the below of main support; And the 3rd (14) and the 4th (15) be positioned between first (13) and second (16), and the 3rd (14) are positioned at the 4th (15) right side; Said operating grip (31) is rotatably installed on first (13), and an end of this operating grip (31) connects bolt (32) through first and is connected with first connecting rod (33); First connecting rod (33) connects bolt (34) through second and is connected with second connecting rod (35); Second connecting rod (35) connects bolt (36) through the 3rd and is connected with third connecting rod (37); (37) other end of third connecting rod is provided with slotted hole; And be set in rotationally on second (16) by this slotted hole; First torsion spring (40) is housed in the operating grip (31); First torsion spring (40) has two arms, and wherein the first arm (41) acts on the operating grip (31), and second arm (42) acts in the deduction hole on first support (11).

3. circuit breaker operation mechanism according to claim 2; The top that it is characterized in that said first support (11) is provided with the first additional bending arm (20); First support (11) inboard has first convex shoulder (21) in addition; And described second support (12) inboard has second convex shoulder (22) relative with first convex shoulder (21), and the middle part of second support (12) also is provided with the second additional bending arm (23) simultaneously; One end of said locking-bar (45) is provided with locking-bar through hole (46); First convex shoulder (21) on this locking-bar through hole (46) and first support (11) and second convex shoulder (22) on second support (12) match, thereby make locking-bar (45) be supported on rotationally on first support (11) and second support (12); Second connects bolt (34) is arranged in the linear pattern groove (47) on the locking-bar (45), thereby can slide within it; Locking-bar (45) has the 3rd convex shoulder (48) at this end with linear pattern groove (47); Has a triangular groove (51) in the said tripping (50); Second torsion spring (52) is housed in this triangular groove (51); Second torsion spring (52) has two arms, and wherein the first arm (53) acts in the tripping (50), and second arm (54) acts on the first additional bending arm (20) of first support (11); One end of tripping in addition (50) also has a tripping through hole (55), and tripping (50) is sheathed on the 3rd (14) by this tripping through hole (55) rotationally; Tripping (50) other end is provided with a boss (56), and the 3rd convex shoulder (48) on the locking-bar (45) is close on this boss (56).

4. circuit breaker operation mechanism according to claim 3; An end that it is characterized in that said third connecting rod (37) is provided with a nose frame (60); Nose frame (60) is gone up riveted joint movable contact bridge (63); The other end of third connecting rod (37) has the additional bending arm (65) of a connecting rod, and the lower end of said extension spring (70) hangs on the additional bending arm (65) of connecting rod, and extension spring (70) upper end then hangs on the additional bending arm (23) of second on second support (12).

5. circuit breaker operation mechanism according to claim 2 is characterized in that the periphery of said first support (11) or second support (12) is provided with some bending arms that are installed on the case for circuit breaker that are used for fixing.