SU1343488A1 - Low-torque contact-less current supply device - Google Patents

Abstract

The invention relates to electrical engineering and can be used to transfer electricity between objects rotating relative to each other. The purpose of the invention is to increase reliability. The current lead contains a flexible conductor 1, made in the form of an open flat ring, and two disks 2 and 3, the faces of which are facing each other are tapered. This embodiment provides for the formation of a variable bending radius and an attachment of a ribbon cable bent at the solid angle with apex on the axis of rotation of the electrical power supply to the tapered surfaces of the disks, which makes it possible to eliminate bending stresses in the cable 1. 2 Il. 4 CO 4 :: a 00 00 (plfff

Description

 13

The invention relates to electrical engineering, in particular, to devices for the transmission of electricity between objects rotating relative to each other, for example, parts of an appliance.

The purpose of the invention is to increase reliability by eliminating the unevenness of the stresses in the flat cable.

FIG. 1 shows an embodiment of a conductive element in the form of a flat ring; FIG. 2 - current lead, general view.

The current lead ring flat ribbon cable 1 is enclosed in the gap between the stationary 2 and the movable 3 disks, facing each other with surfaces that are made cone-shaped with a total tilt angle o1. st (+ jj.

The rotation of one dibka relative to the other is provided through ball bearings 4. Disks 2 and 3, by making their surfaces cone-shaped, ensure the formation of a variable bend radius depending on the distance from the center of the electrical lead, and the fit of the current-conducting cable bent at a solid angle with the top on the axis of rotation of the electrical power supply, to the cone-shaped surfaces.

Tokopodvod works as follows.

When rotating the movable disk 3 relative to the fixed disk 2, the output ends of the annular cables turn around the circumference, increasing the length of the unfolded part of the cable until, after 720 °, the surface of the ring adjacent to the fixed disk 2 turns to the movable one.

The minimum total angle of inclination is determined depending on the interval of requirements for the moment of resistance of the electrical power supply, since the larger L, the smaller the moment of resistance

The laziness of the current lead, / c "" is at least 2 °,

The maximum angle of inclination depends on the required angle of rotation of the current lead and is determined by the formula

in airctgCL),

where 7 /; turn angle tokopod5

0

five

0

water.

about

-MYAX

 63 ... 75. For f ftlfd

MuKc

 63.

The implementation of the cone-shaped disk surfaces facing each other ensures that the flat annular cable fits perfectly along the radius in space, eliminating the non-uniformity of the stresses in the current-carrying ring. Although the bending radii are variable over the cross-section of the electrical power supply, they remain constant over time, with the result that the resistance moment also remains constant. Thus, by producing discs with internal cone-shaped surfaces, bending stresses are eliminated in the flat ring cable, and the service life and reliability are increased.

Claims (1)

Claims of the invention Low-current contactless current connection containing two discs to be installed on mutually rotating objects, installed along the pivot axis, in the gap between which there is at least one flexible conductor made in the form of a ribbon cable having a curvilinear open form. , one end of which is bent in the opposite direction, characterized in that, in order to increase reliability by eliminating non-uniformity The five stresses in the flat cable, facing each other at the surface of the disks, are tapered, and the cable is bent at the solid angle with the top located on the pivot axis.