SU1753509A1 - Electromagnetic commutation apparatus - Google Patents

Abstract

Usage: in engineering for DC and AC contactors. SUMMARY OF THE INVENTION: The apparatus comprises a contact yoke 1 with movable contacts 2 and fixed contacts 3 mounted on a block 4 mounted on a block 6 with guide grooves 7, a magnetic system with a bark consisting of two parts 10, 11 connected by one ends of a hinge 13, the other ends are provided with tips 18 installed in guide grooves 7. Parts of the core are made of plates connected by fasteners and mounted in cages 16 made of antifriction material. On the inner side of the clips can be made grooves in which the fasteners are located. 1 hp f-ly, b silt. sl with x | SP slu about o

Description

The invention relates to electrical engineering and can be used in hardware construction, for example, in the design of DC and AC contactors.

Known switching apparatus with the propane kinematic connection of the core with the contact system.

However, the large core stroke occurring in this apparatus when turned on results in a strong impact, which leads to intensive wear of the magnetic system.

An electrically controlled magnetic switching device containing a contact system with a contact beam, a block with guide grooves arranged perpendicular to the direction of movement of the crosshead is known, a magnetic system with a bore consisting of two parts, one ends of which are interconnected pivotally and the others are provided with tips, installed in the slots of the pads with the possibility of their translational movement.

The said apparatus has increased mechanical and switching wear resistance due to the making of a core in two parts. However, this apparatus cannot be applied to work on a variable tube, since each part of the core is made as one monolithic body.

The aim of the invention is to expand the operational capabilities of the apparatus by allowing its use on alternating current.

This goal is achieved due to the fact that in a known switching device, used for operating at a constant current, containing a contact system with a contact crosshead, a block with guide grooves located perpendicular to the direction of movement of the cross member, as well as a magnetic system with a bark, two parts, one ends of which are interconnected pivotally, while others are provided with tips installed in the slots of the block with the possibility of translational movement, each part of the core is made of plastic yn connected by rivets and provided with a clip, e.g., a thermoplastic antifriction material, in which said fixed plate.

In addition, to simplify the assembly of said plates with a holder, grooves corresponding to the shape and dimensions of the element fastening the plates (rivets) are made in the latter,

The essence of the invention is that due to the implementation in a known switching device having a measles, made of two parts, kinematically

connected to each other, each part of the core from a set of plates interconnected (for example, by rivets) and placed in a cage is ensured that

application when working on alternating current.

In addition, the clips made of thermoplastic material, as well as the presence of grooves in the cage corresponding to the shape and dimensions of the said rivets, made it possible to exclude a significant number of parts used in known devices,

Figure 1 presents the electromagnetic switching device, a General view in section; figure 2 and 3 - intermediate block, side view and in plan; figure 4 and 5 - yoke, respectively, a top and side view; Fig 6 - section aa in Fig. 5

The electromagnetic switching device contains a contact yoke 1 with movable 2 and fixed 3 contacts installed in the terminal block 4. The terminal block 4 is mounted on the housing 5, an intermediate terminal 6 with guide slots 7 is installed between the housing 5 and the terminal strip 4 (Fig. 2, 3) located perpendicular to the direction of movement of the traverse 1

(figure 1).

In case 5, a magnetic system is installed, comprising a core 8 with a retracting coil 9 and a measles consisting of two parts 10 and 11.

Parts 10 and 11 of the core one ends 12 (figure 4, 5) with the help of axis 13 (figure 1) are interconnected and with the crosspiece 1.

Each part 10 and 11 of the core is made of several plates 14 (FIG. 6), connected by rivets 15, and placed in a holder 16 (FIGS. 4 and 5), made of an antifriction thermoplastic material.

The clip 1 b has two side walls 17 and cylindrical tips 18.

The tips 18 are located in the slots of the intermediate block 6 with the possibility of their translational movement in the direction perpendicular to the movement of the crosspiece 1 (Fig. 1).

The walls 17 of the inner cage 16c have grooves 19 in which the rivets 15 are placed (FIGS. 4 and 6).

The assembly of component parts 10 and 11 of the core is carried out as follows. The group of laminated plates 14 (FIGS. 4-6) is fastened with rivets 15, then by gently pressing the walls 17 of the sleeve 16 they are moved apart, and the heads of the rivets 15 are inserted into the slots 19. After releasing the walls 17 of the sleeve 16,

the plate group 14 is fixed in the holder 16.

The operation of the apparatus is carried out as follows.

When voltage is applied to the coil 9, the component parts 10 and 11 of the core are attracted to the core 8. In this case, the contact yoke 1 with the movable 2 contacts closes the fixed 3 contacts. In doing so, the lugs 18 of the cage 16 are moved in the slots 7 of the intermediate pad 6.

The proposed solution ensures the operation of the device on alternating current, as well as simplifying the design.

Claims (2)

1. Electromagnetic switching device containing a contact system with a contact beam, a block with guide grooves arranged perpendicular to the direction of movement of the cross bar, and a magnetic system with a bark consisting of two parts, one ends of which are interconnected pivotally and others are equipped with tips installed in the grooves of the pads with the possibility of translational movement in the grooves, which is characterized by the fact that, in order to expand the operational capabilities, it provided with a clip of antifriction material, each part of the core is made of plates connected by fasteners, and mounted in said holder. 2. An apparatus according to claim 1, characterized in that, in order to simplify the construction, grooves are made on the inner side of the cage in which said fasteners are located. 6 PG.G Fig j 1g Fig.b | / Ј 16 -M. 1 / x7719 Rig. five FIG. 6