RU28418U1 - Contactor - Google Patents

Description

The utility model relates to electrical engineering and can be used to create equipment for infrequent switching power electric circuits, in particular, in generator-engine systems.

A device is known that contains a metal base, fixed and movable bridge contacts, a contact spring, a closed arcing chamber, a traverse, an armature, a coil and a magnetic circuit of an electromagnet, shock-absorbing springs, a thermal relay that disconnects a spring, and a short-circuited coil on a magnetic circuit. In 4 t., T. 2, Electrical products and devices. Under the general editorship of V.G. Gerasimova et al. Publishing House MPEI, 1998, p. 358, fig. 34.7.

The device's drawback is relatively narrow functionality that does not allow it to be used for multiple switching currents.

Closest to the proposed device is a device comprising a steel bracket-base, an anchor, a bracket, movable and fixed contacts, a return spring, copper flexible coupling, a contact spring, a coil of magnetic blast, a core, steel strips, an arcing chamber, arcing horns, an insulating base, insert-prism of rotation, interchangeable plate, bar, spring, including coil, switching current

Electrical reference book. In 4 t., T. 2, Electrical products and devices. Under the general editorship of V.G. Gerasimova et al. MEI Publishing House, 1998, p. 354, fig. 34.5.

MPK N 02 P 6/00 CONTACTOR

The disadvantage of the closest technical solution is the relatively low reliability caused by the arcing when switching fixed and stationary contact by an electric arc.

The required technical result is to increase reliability.

The required technical result is achieved by the fact that, in a device containing a base bracket, an anchor, a bracket bracket, movable and fixed contacts, a return spring, a contact spring, a retracting coil, a core, an arcing chamber, an arcing horn, an insulating base, and also the first and the second prism of rotation, an arcing coil is introduced, while the bracket base is made Z-shaped with a bracket to accommodate a return spring, an insulating base is fixed at one end of the base bracket, and on the other end e - the retracting coil with the core placed inside is strengthened, the armature made by Shaped is placed rotatably at the inflection point relative to the base bracket on the first and second prisms of rotation, the bracket-bracket made in an arcuate shape is attached by the outer side of the middle part to the anchor and through the contact the spring is connected to a movable contact connected to the arcing horn, and the arcing coil covers the current-carrying part of the fixed contact, placed inside the arcing chamber, equipped with arcing "cheeks.

The drawing shows the design of the contactor. The contactor contains a base bracket 1, made Z-shaped, the first and second prisms 2, the core 3, the retracting coil 4, the insulating base 5, the arcing coil 6, the arcing horn 7, the fixed contact 8, arcing "cheeks 9, arcing chamber 10, anchor 11 bracket bracket 12, movable

contact 13, contact spring 14, return spring 15, bracket 16, at the same time, at one end of the base bracket 1, made Z-shaped with bracket 16 to accommodate the return spring 15, the insulating base 5 is strengthened, and the retractor is strengthened at the other end the coil 4 with the core 3 placed inside, the L-shaped anchor 11 is rotatably mounted at the inflection point relative to the base bracket on the first and second prisms of rotation 2, the bracket-bracket 12, made arcuate, is attached to the outer side of the middle part to the armature 11 and through the contact spring 14 is connected to the movable contact 13 connected to the arcing horn 7, and the arcing coil 6 covers the current-carrying part of the stationary contact 8 located inside the arcing chamber 10, equipped with arcing "cheeks 9.

The contactor operates as follows.

When a control signal is applied to the retracting coil 4, the free end of the armature 11, made L-shaped, is attracted by the core 3, which leads to the closure of the movable contact 8 with the fixed contact 13. As a result, the conductive circuit connected to the external power bus closes. When the control signal is disconnected from the retracting coil 4, the attractive force of the armature 11 disappears and the tensile force of the return spring 15 returns the contactor to a similar state when the fixed contact 13 is not in contact with the movable contact 8.

At the same time, since in the arcing coil 6, before the closing and opening of the fixed contact 13 with the movable contact 8, the opposite emf is induced, the duration and level of the arc are reduced, which is additionally extinguished by the arcing chamber 10.

Claims (1)

A contactor comprising a base bracket, an anchor, a bracket bracket, movable and fixed contacts, a return spring, a contact spring, a retracting coil, a core, an arcing chamber, an arcing horn, an insulating base, and a first and second rotation prism, characterized in that an arc extinguishing coil is introduced, while the base bracket is made Z-shaped with a bracket to accommodate a return spring, an insulating base is strengthened at one end of the base bracket, and a retracting coil is strengthened at the other end placed inside the core, the L-shaped anchor is rotatably placed at the inflection point relative to the base bracket on the first and second prisms of rotation, the bracket-arm made arcuate is attached by the outer side of the middle part to the anchor and is connected to the movable spring contact connected to the arcing horn, and the arcing coil covers the current-carrying part of the stationary contact located inside the arcing chamber, equipped with arcing “cheeks”.