CN201576639U

CN201576639U - Multifunctional breaker accessory

Info

Publication number: CN201576639U
Application number: CN2009202703379U
Authority: CN
Inventors: 张晓敏; 张敏海; 徐波; 程国星; 黄燮云; 俞金荣; 张书瑞
Original assignee: SHANGHAI ROGY ELECTRICITY CO Ltd
Current assignee: SHANGHAI YONGJI ELECTRICAL HOLDING CO., LTD.
Priority date: 2009-11-30
Filing date: 2009-11-30
Publication date: 2010-09-08
Anticipated expiration: 2019-11-30

Abstract

The utility model discloses a multifunctional breaker accessory comprising a shell, wherein the shell is internally provided with an auxiliary contact which consists of a movable contact and a fixed contact; the movable contact is connected with a handle operation mechanism; the handle operation mechanism is internally provided with a fastener which is rotatablely connected with a rotating shaft; the shell is also internally provided with an electromagnetic coil; leading wires at two ends of the electromagnetic coil are connected with a connecting terminal and a shunt wire; the top part of the electromagnetic coil is provided with an armature rod; the rear end of the armature rod is hinged with the shell; the front end of the armature rod is connected with a push rod; and when the armature rod rotates around the rear end, the push rod can push the fastener to rotate so that the handle operation mechanism is tripped. In the utility model, multiple functions such as under-voltage (over-voltage) tripping, shunt tripping, auxiliary contact and the like are realized in one shell, a plurality of frequently used breaker accessories are organically integrated together, the structure is compact, the volume is small, the breaker accessory has multiple purposes, and the cost of a user can be reduced.

Description

Multi-functional circuit breaker accessory

Technical field

The utility model relates to the low-voltage electrical apparatus field, is specifically related to a kind of being used with circuit breaker and can realizes that shunted exciter tripping, under-voltage (overvoltage) are threaded off and the multi-functional attachment of auxiliary contact function.

Background technology

In some application scenario, need on circuit breaker, add some annexes, with the function of expansion circuit breaker.Now, relatively Chang Yong circuit breaker accessory has: types such as under-voltage (or overvoltage) release, shunt release and auxiliary contact, wherein auxiliary contact can be single auxiliary contact, also can be the two auxiliary contact that not only comprised normally opened contact but also comprised normally-closed contact.These annexes can be installed in the inside of circuit breaker sometimes; But for miniature circuit breaker, these annexes often are installed in the outside of circuit breaker, are connected in series by trace each other, and with the mechanism of circuit breaker inside interlock mutually.

In the prior art, every kind of annex often all is simple function, a standalone module of encapsulation separately, when needing to expand multiple function on the circuit breaker, just needs a plurality of annexes are installed, and causes take up room big, defect of high cost.

China's utility model patent 02244113.1 discloses a kind of " the integrated release of automatic air circuit breaker ", and it is integrated device for under-voltage releasing equipment and shunt release, but this structure can't realize the function that overvoltage is threaded off, and does not also possess the function of auxiliary contact.

The utility model content

The technical problems to be solved in the utility model provides a kind of multi-functional circuit breaker accessories such as under-voltage (or overvoltage) dropout, shunted exciter tripping and auxiliary contact that possess simultaneously, to overcome the above-mentioned defective of prior art.

In order to solve the problems of the technologies described above, the utility model adopts following technical scheme: a kind of multi-functional circuit breaker accessory, comprise a housing, be provided with auxiliary contact in the housing, auxiliary contact are made of moving contact and fixed contact, described moving contact is connected with the one handle operating mechanism, be provided with a tripping part in the handle operation mechanism, the tripping part is rotatably connected in the rotating shaft, also be provided with a solenoid in the described housing, the two ends lead-in wire and the binding post of solenoid, the shunt opening lead-in wire is connected, and the top of solenoid is provided with an armature lever, and the rear end of armature lever is hinged on the housing, the front end of armature lever connects a push rod, when armature lever when rotate the rear end, described push rod can promote the tripping part and rotate, and handle operation mechanism is threaded off.

Preferably, described tripping part is provided with a connecting hole, can insert a trace in the described connecting hole and be connected with circuit breaker.

Preferably, comprise that also a returning spring is connected with armature lever.

Preferably, described push rod is a U-shaped bar, comprises a forearm and a postbrachium, the postbrachium of push rod is rotatably connected in the push-rod hole of armature lever front end, in the chute on the forearm insertion inner walls of push rod, when the forearm of push rod slides in chute, can promote the tripping part and rotate.

Further, the front end of armature lever is provided with two push-rod holes one on the other, and the postbrachium of described push rod optionally is connected in one of them push-rod hole.

Preferably, described fixed contact comprise be positioned at the moving contact both sides often open fixed contact and normally closed fixed contact.

The beneficial effects of the utility model are: realized multiple functions such as under-voltage (or overvoltage) dropout, shunted exciter tripping and auxiliary contact in a housing, several circuit breaker accessories commonly used are organically integrated, compact conformation, volume are little, can a tractor serves several purposes, reduce user cost.

Description of drawings

Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.

Fig. 1 is the internal structure schematic diagram of a kind of multi-functional circuit breaker accessory of the utility model.

Fig. 2 is a kind of shape schematic diagram of push rod.

Fig. 3 is the structural representation when the utlity model has the undervoltage tripping function.

Fig. 4 is the structural representation when the utlity model has the overvoltage tripping function.

Among the figure: 1, housing 101, chute 2, handle 3, handle operation mechanism

4, tripping part 401, connecting hole 5, rocking bar 6, moving contact

7, often open fixed contact 8, normally closed fixed contact 9, armature lever 901, push-rod hole

902, push-rod hole 10, solenoid 11, shunt opening lead-in wire 12, binding post

13, rotating shaft 14, push rod 1401, forearm 1402, postbrachium

15, returning spring

Embodiment

As shown in Figure 1, a kind of multi-functional circuit breaker accessory of the utility model comprises a housing 1, be provided with auxiliary contact in the housing 1, auxiliary contact are made of moving contact 6 and fixed contact, wherein fixed contact is divided into and often opens fixed contact 7 and normally closed fixed contact 8, often opens the both sides that fixed contact 7 and normally closed fixed contact 8 lay respectively at moving contact.Moving contact 6 is connected with one handle operating mechanism 3, and handle operation mechanism 3 belongs to prior art, open circuit and the auxiliary contact annex in kindred organization is all arranged, therefore be not described further.Handle 2 can connect with the handle of circuit breaker and rotate, and when turning handle 2, can drive handle operation mechanism 3 and rotate, and drive moving contact 6 and normally closed fixed contact 8 closures by a rocking bar 5.

Behind the combined floodgate, handle operation mechanism 3 can produce self-locking under the effect of snap close, and moving contact 6 and normally closed fixed contact 8 are kept closed.Handle operation mechanism 3 is provided with a tripping part 4, rotates tripping part 4, handle operation mechanism 3 is threaded off trip.

Also be provided with a solenoid 10 in the housing 1, the two ends lead-in wire of solenoid 10 is connected simultaneously with shunt opening lead-in wire 11 and binding post 12, can go between by shunt opening and 11 in solenoid 10, import remote control signal, by binding post 12 can be in solenoid 10 voltage signal in the input circuit.The top of solenoid 10 is provided with an armature lever 9, and the rear end of armature lever 9 is hinged on the housing 1.

As shown in Figure 3, the front end of armature lever 9 is provided with two push-rod holes 901,902 one on the other, when the utility model needs the undervoltage tripping function, a push rod 14 is installed in the push-rod hole 902 below, the shape of push rod 14 as shown in Figure 2, it is a U-shaped bar, comprises a forearm 1401 and a postbrachium 1402.The postbrachium 1402 of push rod is inserted in the following push-rod hole 902 rotationally, in the chute 101 that the forearm 1401 of push rod inserts on the inner walls.Between armature lever 9 and housing, be connected a returning spring 15.Voltage in circuit just often, armature lever 9 is in by the state of solenoid 10 adhesives, the forearm 1401 of push rod does not contact with tripping part 4; When applying remote control signal by 11 pairs of solenoids 10 of shunt opening lead-in wire, perhaps when the brownout in the circuit, armature lever 9 is discharged by solenoid 10, under the pulling of returning spring 15, armature lever 9 rotates counterclockwise around its rear end, and the forearm that drives push rod 14 in chute 101 to front slide, promoting tripping part 4 13 rotates around the shaft, thereby make handle operation mechanism 3 tripping operation of threading off, moving contact 6 separate with normally closed fixed contact 8 and with often open fixed contact 7 closures, can output alarm signal; Tripping part 4 is provided with a connecting hole 401, can insert a trace (not shown) in the connecting hole 401 and be connected with opening circuit, and when tripping part 4 rotates, drives circuit breaker disconnection of also threading off by this trace simultaneously.

As shown in Figure 4, when the utility model needs the overvoltage tripping function, the postbrachium of push rod 14 is contained in the upper push-rod hole 901 of armature lever 9, the voltage in circuit just often, armature lever 9 is in d/d state, the forearm of push rod 14 does not contact with tripping part 4; When applying remote control signal by 11 pairs of solenoids 10 of shunt opening lead-in wire, perhaps when the overtension in the circuit, armature lever 9 is by solenoid 10 adhesives, armature lever 9 clockwise rotates around its rear end, and the forearm that drives push rod 14 in chute 101 to front slide, promote tripping part 4 and rotate, trip thereby handle operation mechanism 3 is threaded off, all the other actions are identical with above-mentioned undervoltage tripping.

Claims

1. multi-functional circuit breaker accessory, comprise a housing (1), housing is provided with auxiliary contact in (1), auxiliary contact are by moving contact (6) and fixed contact (7,8) constitute, described moving contact (6) is connected with one handle operating mechanism (3), be provided with a tripping part (4) in the handle operation mechanism (3), tripping part (4) is rotatably connected in the rotating shaft (13), it is characterized in that: also be provided with a solenoid (10) in the described housing (1), the two ends lead-in wire and the binding post (12) of solenoid (10), shunt opening lead-in wire (11) is connected, the top of solenoid (10) is provided with an armature lever (9), the rear end of armature lever (9) is hinged on the housing (1), the front end of armature lever (9) connects a push rod (14), when armature lever (9) rotated around the rear end, described push rod (14) can promote tripping part (4) and rotate, and handle operation mechanism (3) is threaded off.

2. multi-functional circuit breaker accessory according to claim 1 is characterized in that: described tripping part (4) is provided with a connecting hole (401), can insert a trace in the described connecting hole (401) and be connected with circuit breaker.

3. multi-functional circuit breaker accessory according to claim 1 is characterized in that: comprise that also a returning spring (15) is connected with armature lever (9).

4. multi-functional circuit breaker accessory according to claim 1, it is characterized in that: described push rod (14) is a U-shaped bar, comprise a forearm (1401) and a postbrachium (1402), the postbrachium of push rod (1402) is rotatably connected to a push-rod hole (901 of armature lever front end, 902) in, in the chute (101) on the forearm of push rod (1401) the insertion inner walls, when the forearm (1401) of push rod slides in chute (101), can promote tripping part (4) and rotate.

5. multi-functional circuit breaker accessory according to claim 4, it is characterized in that: the front end of armature lever (9) is provided with two push-rod holes (901 one on the other, 902), the postbrachium of described push rod (1402) optionally is connected in one of them push-rod hole (901,902).

6. multi-functional circuit breaker accessory according to claim 1 is characterized in that: described fixed contact comprise be positioned at moving contact (6) both sides often open fixed contact (7) and normally closed fixed contact (8).