SU1211824A1 - Switch magnetic device for fixing on permeance base - Google Patents

Abstract

The invention relates to instrumentation. The purpose of the invention is to reduce parasitic flows and simplify switching. Flat sector-. The portions of the movable part 5 of the magnetic conductor are installed against magnets 1 and 2 without overlapping the projections 12 and 13. A disk with magnets 1 and 2 and pole lugs 3 and 4 creates a magnetic circuit with magnetic fluxes extending into the space beyond the projections 16 and 17. This allows the device to be secured by the projections 16 and 17 on the magnetic base. When the device is detached from the magnetic base, the disk is placed in a position opposite to the projections 12 and 13, which closes the magnetic fluxes from the pole, tips 3 and 4 poles of the magnets 1 and 2 and turns off the device, 4 sludge; sl 16 7 17 ViOL / 5 / "- h". S Fig g f “g. one

Description

The invention relates to instrumentation, in particular, to switchable devices for quick, convenient fixing and detaching optical and other types of devices from magnetically conductive elements.

The aim of the invention is to reduce parasitic magnetic fluxes and to simplify switching, achieved

so that its flat sector parts are opposite the magnets 1 and 2, but do not overlap the projections 12 and 13. With this, the disk is put together with the magnets 1 and 2 and the pole pieces 3 and 4 creates a series magnetic circuit, the main magnetic fluxes which go out into space from you

15

by increasing the degree of concentration of the 16 and 17 pole tips of the magnetic fluxes and reducing the angle of rotation of the moving part of the device.

Figure 1 shows the device axial incision; FIG. 2 is a view A in FIG. 1; FIG. 3 is a view from the side of the switching knob; figure 4 - section bb In figure 1

The device contains two oppositely magnetized permanent magnets 1 and 2 in the form of truncated segments 3 and 4. The device is attracted to a magnetic base.

To turn off the device, the disk is rotated to the position in which it is opposed to the projections 12 and 13 on the pole pieces 3 and 4 and through these protrusions the magnetic fluxes drop from the pole pieces 3 and 4 of the poles of the magnets 1 and 2. from the protruding parts 16 and 17 of the magV; this stream does not leave the space outside it, which means the device is turned off. In 25, the device can be unscathed from the base or moved to a new position.

20

wires with pole terminals 3

and 4, the movable part 5 of the magnetic circuit, the fastening non-magnetic parts, the insert 6 and the axis 7 with the central screw 8, the handle 9 and the sleeve 1 ha 10 and the direction of magnetization of the magnets 1 and 2 are shown in figure 2 by the letters N and S, Magnets-1 and 2 are rigidly connected, for example, glued, with pole pieces 3 and 4. The pole pieces, formed by symmetrical cup halves, are separated by a non-magnetic gap, in which it is advisable to install the insert 6 (FIG. 2), the pole pieces 3 and 4 have lugs 12 and 13, alternating magnets 1 and 2 when counting in azimuth around axis 7 device. The height of the protrusions is equal to the thickness of the magnets. The movable part 5 of the magnetic circuit is made in the form of a disk. Its outer contour has cuts, in the lumen of which a contour of the section of projections can be placed.

For ease of use, the device is located in a non-magnetic circuit 14, in which the switch stopper 15 is screwed. The protruding portions of the 16 and 17 glasses of the device interact with the magnetically conducting base.

The device works as follows.

To turn on the device, the movable part of the magnetic core is installed so that its flat sector parts are opposite the magnets 1 and 2, but do not overlap the projections 12 and 13. In this position, the disk together with the magnets 1 and 2 and pole tips 3 and 4 creates a sequential magnetic circuit, the main magnetic fluxes of which go out of space

stupid 16 and 17 pole tips

3 and 4. The device is attracted to a magnetic base.

To turn off the device, the disk is rotated to the position in which it is opposed to the projections 12 and 13 on the pole pieces 3 and 4 and through these protrusions the magnetic fluxes drop from the pole pieces 3 and 4 of the poles of the magnets 1 and 2. from the protruding portions 16 and 17 of the magv; this flows do not go out into the outer space, which means the device is turned off. As a result, the device can be freely removed from the base or moved to a new position.

Claims (1)

Invention Formula A switchable magnetic device for fixing on a magnetically conducting base J containing magnetically bored with pole- and ferrules and two permanent magnets magnetized in opposite axial directions, which differs from TBMj in order to reduce parasitic magnetic fluxes and simplify switching. formed by a fixed part made in the form of a split cylindrical cup, symmetric halves of which are separated by a nonmagnetic gap, and a part rotating about the cup axis, while The inner end surface of the glass, within the area of each of the segments of the end symmetrically with respect to the axis of the glass, is made on one HOMir protrusion to be fixed by one ffy magnet with the same height as the protrusion. magnets and having symmetrical cuts. the contour of the axial projection which is covering 312118244 with respect to the contour of the transverse, not less than the sum of the height of the protrusions and the cross section of the protrusions, and the depth of the glass is twice the thickness of the disk.