CN201518301U - Auxiliary signal switch for small circuit breaker and circuit breaker for equipment - Google Patents

Abstract

The utility model relates to an auxiliary signal switch that is used for miniature circuit breaker and circuit breaker for equipment. Comprises the following steps: the device comprises a shell, a public terminal, a normally open terminal, a normally closed terminal, a reed, a double-sided contact arranged at the end part of the reed, a spring and a driving rod; the common terminal, the normally open terminal and the normally closed terminal are respectively installed in grooves prefabricated on two sides of the shell body, one end of the spring is fixed on the common terminal, the other end of the spring is connected with the reed, the connecting end portion of the reed is clamped into a clamping groove of the common terminal, the end of the driving rod extends out of the shell body, the other end of the driving rod straddles above the spring, and when the driving rod presses down the spring, the double-sided contact of the end portion of the reed is in contact with the normally closed terminal contact and is separated from the normally open terminal contact by a certain distance. The utility model has the advantages of it is following: 1) the circuit breaker is completely isolated from a main circuit loop of the circuit breaker, and provides the greatest convenience for remote monitoring and an external signal loop. 2) The auxiliary signal switch is an independent unit and is integrally arranged in the breaker body after being assembled.

Description

Auxiliary signal switches for miniature circuit breakers and equipment circuit breakers

technical field

The invention relates to a circuit breaker, in particular to an auxiliary signal switch for a small circuit breaker and an equipment circuit breaker.

Background technique

In the known technology, in order to ensure the safety of electricity consumption, a circuit breaker is installed on the power circuit of the general electric equipment. In many applications, it is required to remotely monitor the closing and opening of the circuit breaker, and it is necessary to install auxiliary contacts inside the circuit breaker to indicate the working status of the circuit breaker, such as: subways, vehicles, steelmaking, ironmaking Such signals are required for control equipment, etc. Looking at the main problems existing in the existing circuit breaker auxiliary contacts are: most of them depend on the voltage system of the main circuit of the circuit breaker; the other is poor operation reliability and short service life. Since the performance of the auxiliary contact of the circuit breaker will directly affect the normal operation of the entire equipment, its role cannot be underestimated. The market expects high-quality products to come out to meet the growing demand.

Utility model content

The purpose of this utility model is to provide an auxiliary signal switch for small circuit breakers and equipment circuit breakers that does not need to rely on the voltage system of the main circuit of the circuit breaker, has a simple structure, and works reliably.

The utility model is realized through the following technical solutions: an auxiliary signal switch for small circuit breakers and equipment circuit breakers, which is special in that it includes: a shell, a common terminal, a normally open terminal, a normally closed terminal, The reed and the double-sided contact, spring, and drive rod installed at the end of the reed; the common terminal, the normally open terminal, and the normally closed terminal are respectively installed in the prefabricated grooves on both sides of the shell, and one end of the spring is fixed on the On the common terminal, its other end is connected with the reed, and the connecting end of the reed is snapped into the slot of the common terminal. When the driving rod depresses the spring, the double-sided contact at the end of the reed touches the contact of the normally closed terminal, and is separated from the contact of the normally open terminal by a certain distance.

The positive effects of the utility model are: the auxiliary signal switch for small circuit breakers and equipment circuit breakers proposed by the utility model has the following advantages: 1) It is completely isolated from the main circuit circuit of the circuit breaker, so that the auxiliary signal system can be used A completely different voltage system from the main circuit provides maximum convenience for remote monitoring and external signal loops. 2) The auxiliary signal switch is an independent unit, which is placed in the circuit breaker body as a whole after assembly. The utility model has the advantages of simple structure, reliable operation, convenient assembly, remarkable practicability and progress, and has popularization value.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is a schematic diagram of the connection of the common terminal, the spring and the reed in the embodiment of Fig. 1 .

Detailed ways

Below in conjunction with embodiment the present invention will be further described:

Fig. 1～Fig. 2 are the structure diagrams of the utility model. An auxiliary signal switch for small circuit breakers and equipment circuit breakers, comprising: a housing 33, a common terminal 34, a normally open terminal 37, a normally closed terminal 36, a reed 38 and a double-sided contact mounted on the end of the reed Point 39, spring 40, drive rod 35. The common terminal 34, the normally open terminal 37, and the normally closed terminal 36 are respectively installed in the prefabricated grooves on both sides of the housing shell 33. One end of the spring 38 is fixed on the common terminal 34, and the other end is connected to the reed 38. The connecting end of the reed 38 is snapped into the slot 331 of the common terminal, and the rod end of the driving rod 35 protrudes from the casing, and the other end straddles the spring 40. When the driving rod 35 presses down the spring 40 , the double-sided contact 39 at the end of the reed is in contact with the contact of the normally closed terminal 37, and is separated from the contact of the normally open terminal 36 by a certain distance.

When the utility model is working, it is placed in the groove reserved by the circuit breaker, the driving rod is placed in the positioning groove of the circuit breaker, and its free end is in contact with the moving contact rod of the circuit breaker. At this time, because the driving rod compresses the spring , the reed is upturned so that the contact on the reed is in contact with the contact of the normally closed terminal, indicating that the circuit breaker is in a normal working state. When the current in the coil of the circuit breaker exceeds the rated value, under the action of the current magnetic field, the moving contact of the circuit breaker releases the restraint on the driving rod, the spring returns, and the contact on the reed returns to touch the normally open contact, assisting The switch circuit is disconnected, indicating that the circuit breaker is disconnected.

The above examples do not constitute a limitation to the present utility model, and all technical solutions obtained in the form of equivalent replacement or equivalent transformation all fall within the protection scope of the present utility model.

Claims (1)

1. an auxiliary signal switch that is used for miniature circuit breaker and equipment with circuit breaker is characterized in that, includes: shell, public terminal, Chang Kaiduan, normally closed terminal, reed and be installed in two-sided contact, spring, the drive rod of leaf end; Described public terminal and Chang Kaiduan, normally closed terminal are installed in respectively in the prefabricated groove in case body both sides, described spring one end is fixed on the public terminal, its other end links to each other with reed, the connection end of reed snaps in the draw-in groove of public terminal, described drive rod rod end is overhanging to go out case body, its in addition end span ride over the spring top, when the drive rod dead spring, touch mutually with normally closed terminal contact the two-sided contact of leaf end, spaced apart with the sub-contact of Chang Kaiduan.

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