SU1467636A1 - Sliding-type current-collecting device - Google Patents

Abstract

The invention relates to precision instrument making and can be widely used in all parts of the national economy to provide electrical communication between moving and stationary elements. The purpose of the invention is to increase the reliability of the closing and opening of the electrical circuit of the brush-contact element. The sliding current collection device comprises a brush 1 of electrically conductive material with a cylindrical contact surface 6 and a contact element 3 made of a conductive material which is fixed, forming a protrusion, in a holder movable relative to the brush 5 made of insulating material, and forming. The cylindrical brush surface is perpendicular to the direction of movement of the holder, and the protruding part of the contact element above the holder is made with a rounded back forming a point contact with the brush surface. The holder 5 is provided with a support element 4, which is fixed parallel to the contact element 3. Support element 4 located symmetrically with respect to the contact element, and the length of the support element pre-. extends the length of the contact element. In order to avoid simultaneous contact of the brush 1 with the supporting element 4, the height of the supporting element is lower than the height of the contact element and its edge is made with bevels 9. The supporting element is made of a metallic material and is not electrically connected with the contact element. During device operation, the contact of the brush with the holder is absent. 4 il. (L 4 ate with O5 ttf.t

Description

The invention relates to the field of instrumentation and can be widely used in all sectors of the national economy to provide electrical communication to the moving and fixed elements.

The aim of the invention is to improve the reliability of the closing and opening of the electrical circuit of the brush-contact element.

FIG. 1 shows a sliding current collection device in which the holder is made in the form of a cylinder, and the contact and supporting elements are located on the cylindrical surface of the holder in FIG. 2, section A-A in FIG. one; in fig. 3 - devices in which the holder is made in the form of a flat ring, and the co-tact and support elements are located on the end surface of the ring; in FIG. 4 a section BB in FIG. 3

In addition, the device can be implemented for the case of linear movement of the holder.

The device for sliding current collection includes a fixed brush 1 fixed in bracket 2, contact element 3 and supporting element 4, for -. Mounted in the movable holder 5, Brush 1, the contact element 3 and the support element 4 are made of current-conducting material, and the holder 5 and the bracket 2 are made of insulating material. Brush 1 has a circular contact surface 6 that forms 7 which is perpevicular to the direction of movement of the delayslate 5 (indicated by arrow B), the part of the contact element 3 protruding above the surface of the holder 5 has a rounded top, the circumferential 8 of which is located in the plane perpendicular to the direction of the movement of the holder 5 .

I

Onorn element 4 represents

a part of a flat ring, the plane of which is perpendicular to the axis of rotation of the holder 5 (in FIGS. 3 and 4, the support element is a part of a thin-walled cylinder whose axis coincides with the axis of rotation of the holder 5)

3 is a part of a flat ring parallel to the ring of the support element (in FIGS. 3 and 4, the contact element 3 is part of a thin-walled cylinder.

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five

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whose axis coincides with the axis of the cylinder of the support element. 4). The length of the support element 4 exceeds the length of the contact element 3, the support element is located symmetrically with the contact element. The supporting element 4 protrudes above the holder 5 n, a value slightly smaller than the protrusion of the contact element 3, the edge of the support element is made with bevels 9,

The device works as follows.

When the holder 5 rotates, the brush 1 moves over the holder 5 in the zone where the contact element 3 and the supporting element 4 are absent, and in this position the brush 1 does not touch the holder 5. Then the brush approaches the supporting element 4 and along the bevel 9 smoothly rises the height of the protrusion of the support element. At the same time, the required force is applied to tighten the brush 1 to the supporting element 4. With this magnitude of the pressing force brush 1 enters B electrical contact with the contact element 3. Upon further movement along the contact element 3 the pressing force of the brush 1 increases by an insignificant amount, and the contact of the brush 1 s supporting element 4 is missing

The application of the proposed sliding current collection device provides an increase in the reliability of closing and opening of the electrical value of the brush - contact with an unambiguous mutual position of the brush and the contact element, increasing the service life, pressing force to the contact element at the moment of occurrence of electrical contact, close to the preload of the brush to the contact element in the steady state mode of the contact (when the brush slides on the contact element with a constant protrusion above the holder)

Claims (1)

Formula Fig. eteny A current collection device comprising a brush with a schedric contact surface and a contact element that is attached to a holder movable relative to the brushes. made of an insulating material, the contact element is cylindrical in shape, protrudes above the surface of the holder and makes a point contact with the brush surface, characterized in that, in order to increase the reliability of the circuit and disconnect the circuit. The brush is a contact element the holder is provided with a supporting metal element which is fixed on it parallel to the contact element, and the length of the support element is pain above, the length of the support element extending beyond the limits of the latter from both sides is equal to each other, the support element protrudes above the surface of the holder and the height of its protruding part is less than the height protruding above the surface of the holder of the contact element, the support element is electrically isolated from contact element n has beveled surfaces along its edges. 12 Compiled by V. Chernov Editor V. Petrash Tehred L. Serdyukova Proofreader I. Muska Order 1203/49 Circulation 615 VNSHSHI of the State Committee on Inventions and Discoveries at the State Committee on Science and Technology of the USSR 113035, Moscow, Zh-35, Raushsk nab, d. 4/5 Production and Publishing Combine Patent, Uzhgorod, st. Gagarin, 101 Fig.Z B b 2 1  / jl .. . j . Fiel Subscription