SU1372411A1 - Polarized electric relay - Google Patents

Abstract

The invention relates to electrical engineering, in particular to a polarized electromagnetic relay, and can be used in compact two-position relays with a relatively large core stroke and holding force. The purpose of the invention is to reduce the material and labor consumption of the manufacture of the relay. A polarized electromagnetic relay contains two flat parallel-arranged magnetic conductors, between which there are permanent magnets, an excitation coil covered by the magnetic conductors, and flat measles. The anchor is located inside the coil and is suspended on the axle. The axis of rotation of the core is directed perpendicular to the planes of the magnetic circuit. One of the magnetic cores is made of two parts. An anchor with its plane is installed between the parts of the magnetic circuit in its plane. The pole surfaces of the parts of the magnetic circuit are made with a curved convex profile. 1 z.Po f-ly, 4 ill. g (L

Description

one

The invention relates to electrical engineering, in particular to a polarized electromagnetic relay, and can be used in compact two-position relays with a relatively large core stroke and holding force.

The aim of the invention is to reduce the consumption of materials and the complexity of the manufacture of the relay.

Figs 1 and 2 show a polarized electromagnetic relay; FIGS. 3 and 4 show the air gaps between the crust and a part of the pole surface (with a straight, weakly convex profile x), to which measles is attached.

The relay contains parallel spaced flat magnetic cores 1 and 2, the magnetic core 1 is made of two identical U-shaped parts 3 and 4. There are permanent magnets 5 between the magnetic cores. Inside the excitation coil 6 covered by the magnetic cores 1 and 2 there is a flat bore suspended on the axis 7 8. The plane of the core 8 is aligned with the plane of the magnetic circuit 1, and the axis 7 of rotation of the core is directed perpendicular to this plane. Protruding outward from the end flanges 9 of the coil 6, the ends of the core 8 in both extreme positions of the core adjoin simultaneously to two pole surfaces 10 formed by the projections of parts 3 and 4 of the magnetic conductor 1 o. The pole surfaces 10 have a curvilinear slightly convex profile.

Simultaneous fit of the core 8 to the pole surfaces of 10 parts 3 and 4 of the magnetic circuit in both its extreme positions for a given course of the core is achieved by assembling the relay by corresponding movements of parts 3 and 4 in the plane of the core, at which these parts slide along the surfaces of the constant magnets 5 without disturbing the magnetic connection with them, t, e. without the formation of parasitic air gaps.

The relay works as follows.

When the excitation coil 6 is de-energized, the magnetized flux of permanent magnets 5, closed between the parts of the magnetic circuit 3 and 4 along the bark 8, holds the measles in one of the extreme positions. After connecting the excitation coil to the power supply

724112

the corresponding polarity, the magnetizing force of the coil creates a flow of opposite voltage in the bark. As a result of the interaction of this flow with the flow of permanent magnets, the measles are transferred to another extreme position, triggering the relay.

JQ The technical and economic efficiency of the proposed relay as compared to the known one ensures the reduction in the consumption of active materials — the mass of permanent magnets is more than

5, and the winding copper of the excitation coil is approximately 1.5 times due to the corresponding reduction in air gaps in the magnetic system. Somewhat reduced by 20 also the mass of the magnetic circuit at

making it in two parts, with a gap equal to the sum of the width of the core and its stroke.

In addition, the proposed relay

25 provides a reduction in the labor intensity of manufacturing due to the exclusion of finishing operations in the manufacture of permanent magnets and other details, since in the proposed relay

30, a predetermined stroke of the core is provided by adjustment, and in the well-known — precise manufacture of parts.

Claims (1)

Invention Formula 1 о Polarized electromagnetic relay containing two solid magnetic conductors, installed parallel to each other, constant magnets located between the planes of the magnetic cores facing one another, an excitation coil with a flat bark, the ends of which protrude outwards beyond both end flanges of the coil and which is mounted on an axis inside it, the excitation coil being installed so that it covers both of the magnetic cores, flat measles is pivotally mounted so that its ends are Both extreme positions are adjacent to one of the magnetic circuits, characterized in that, in order to reduce the material intensity of the relay and the complexity of its manufacture, one of these magnetic circuits is made of two parts, the excitation coil is shifted to the magnetic circuit so that its parts is located symmetrically with respect to the axis of the excitation coil, and the specified flat bark is installed between them, and its axis of rotation is perpendicular to the planes of the magnetic cores. 2, A relay according to claim 1, characterized in that the pole surfaces of said parts of the magnetic circuit are made with a curved convex profile. / L / 7 Fzg one Fig j 2 Phi2. 2 : / Y FIG. four