RU212569U1 - SWITCHING DEVICE - Google Patents

Abstract

The utility model relates to electrical engineering, namely to switching devices, in particular to contactors and starters. EFFECT: simplification of assembly, increase in assembly speed, assembly quality and manufacturability. Switching device main contacts containing contact parts, having a circular cross section and placed in the holes of the contact parts holders. Fixed holders of contact parts are made with technological holes for mounting and are mounted in the body of the switching device. 6 ill.

Description

The utility model relates to switching devices and can be used in the field of electrical engineering, in contactors and starters.

The closest in technical essence is the device of the contact system (RU 2148867, publ.: 05/10/2000 Bull. No. 13), a contact system containing a movable contact bridge with symmetrical platforms on its edges with contact details fixed on them and fixed contacts in the form brackets, on the upper shelves there are platforms with contact parts, the platforms for fastening the contact parts of the movable contact bridge and fixed contacts are made with an inclination of the outer edges to the contact closure plane. As a result, the points of initial contact of the contact parts are displaced to the outer edges of the contact system, and when the arc appears and moves, the removal of the contact material occurs along a plane located at an angle to the bases of the contact parts; therefore, the contact material is first removed from their outer edges, then the zone removal of the contact material is gradually shifted towards the central part and further to their inner edges. The disadvantage is the complexity of the assembly.

The task to be solved by the claimed utility model is to simplify the assembly, increase the speed, quality and manufacturability of the assembly.

This problem is solved due to the fact that the switching device contains contact parts, contact parts holders and fixed contacts, main contacts containing eight pairs of contact parts having a circular cross section and placed in the holes of the contact parts holders, and eight fixed contact holders. - parts made with technological holes.

The technical result provided by the above set of features is the development of a contact system of a switching device that simplifies assembly, increases assembly speed, assembly quality and manufacturability.

The term "main contact" (main moving contact and/or main fixed contact) means a contact included in the main circuit of a contact switching device, intended to carry the main circuit current in the closed position. The main circuit current is marked on the switchgear as the rated operational current Ie (and/or rated current In).

The term “contact closure” means an actuation that moves the device's contacts from an open position to a closed position while the fixed contact of the motor control device remains stationary. The moving contact moves relative to the fixed contact until it contacts the fixed contact in the "on" position of the motor control device. The closed position of the motor control device is the position in which the intended continuity of the main circuit of the motor control device is ensured.

The term “opening” of the contacts means the actuation which causes the contacts of the device to move from the closed position to the open position, while the fixed contact of the motor control device remains stationary. The movable contact moves relative to the fixed contact, in the open position a gap is formed between the movable and fixed contact.

The term "electromagnetic drive" means that the force necessary to close the main contacts is provided by an electromagnet.

The term "coil" means a set of turns of enameled wire on a frame. The coil of the electromagnetic drive according to this utility model means a coil that is part of an electromagnet, the operation of which leads to the closure of the main contacts.

The term "contact-piece" means a piece of conductive parts forming a contact.

The term "having a circular cross section" means that the contact part has at least one circular cross section.

The claimed utility model is illustrated by drawings, which show:

in fig. 1 - general view of the switching device

in fig. 2 - general view of the contact pad

in fig. 3 - movable holders of contact parts with holes

in fig. 4 - fixed holders of contact parts with holes

in fig. 5 - movable holders of contact parts with contact parts

in fig. 6 - moving contacts in the closed position with fixed contacts in the section.

The switching device contains contact parts, fixed contacts. The main contacts contain eight pairs of contact parts 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 37, 38, 39, 40. Contact parts have a circular cross section and are placed in holes 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 41,42, 46, 47 contact holders. The switching device contains eight fixed holders 25, 26, 27, 28, 29, 30, 43, 44 contact parts made with technological holes 31, 32, 33, 34, 35, 36, 45, 48 for mounting in the switching device housing .

The inventive switching device is a part (node) of a complex engine reverse control system, the presence of eight pairs of contact parts in the switching device simplifies the assembly of the engine control system and increases the speed and quality of the assembly, ensures its manufacturability, since the assembly uses two pre-assembled switching devices according to eight pairs of contacts each.

Eight fixed holders of the contact parts are made with technological holes, the contact part is placed in such a hole (Fig. 4), the second technological hole is used to fasten the fixed holder of the contact part in the body of the switching device in a specific place. This simplifies assembly, increases assembly speed, assembly quality and assembly manufacturability.

Since all sixteen contact parts (eight pairs) have a circular cross section (Fig. 1, 5), during assembly, it does not matter in the longitudinal or transverse direction the contact part will be fixed, in any case, accurate positioning of the contact parts fixed in the hole will be ensured. on the holders and accurate assembly, ensuring the correct closure of the contact parts fixed on the movable and fixed holders of the contact part due to the shape having a circular cross section. Each contact-piece holder has a hole in which a contact-piece is placed during assembly, this simplifies assembly, increases the speed, assembly quality and manufacturability of assembly.

For each of the eight fixed holders of contact parts in the body of the switching device, there is a niche with a hole (reciprocal hole provided on the fixed holder), which ensures accurate placement of the holder in a certain position, simplifies assembly, increases assembly speed, assembly quality and manufacturability.

The implementation of all sixteen contact parts (eight pairs) of the same shape (Fig. 2), having a circular cross section, simplifies assembly, increases the speed, assembly quality and manufacturability of the assembly.

The placement of all sixteen contact parts in the holes provided in the holders (the holes in the holders are embedded in the dies and are always done exactly in a certain place when the holders are stamped) simplifies assembly, increases the speed, assembly quality and assembly manufacturability.

The implementation of all eight fixed holders of contact parts with holes (Fig. 4) (the holes in the fixed holders of contact parts are embedded in dies and are always performed exactly in a certain place when stamping the holders) simplifies assembly, increases the speed, assembly quality and manufacturability of assembly.

The device works as follows.

When voltage is applied to the turns of the coil of the electromagnetic drive, a magnetic flux is created, and the moving part of the electromagnetic drive is attracted to the stationary part. The moving part of the electromagnetic drive drives the holders of the main moving contacts with the contact parts, and the moving contacts are lowered until they come into contact with the fixed contacts. When the power is turned off, the moving contacts return to their original position.

Claims (1)

A switching device containing contact parts, characterized in that it contains main contacts containing contact parts, having a circular cross section and placed in the holes of the contact parts holders, while the fixed contact parts holders are made with process holes for fastening and are mounted in the housing switching device.

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