SU1363353A1 - Electric machine commutator - Google Patents

Abstract

The invention relates to electrical engineering. The purpose of the invention is to increase reliability by ensuring uniformity of the insulating layer. The collector of the electric machine comprises a metal body 1 with trapezoidal annular grooves 2, in which are arranged the shanks 3 of the collector plates 4, which follow the shape of the grooves, the gap between the body and the plate being filled with plastic. To one side of the groove in the area of its angle at the larger base of the trapezoid is adjacent developed in the axi-. In the opposite direction, the cavity 6 is connected to the adjacent groove by at least one hole 7 made in the housing. I il. S J-g- V 00 O5 WITH CO JV with

Description

FIELD OF THE INVENTION The invention relates to electrical engineering and concerns collectors of direct current electric machines.

The purpose of the invention is to increase reliability by ensuring uniformity of the insulating layer.

The drawing shows the proposed collector section.

The collector contains a metal housing 1 with trapezoidal annular grooves 2. In the latter are located the shanks 3 collector plates 4. The shanks 3 also have a trapezoidal shape. The gap between the housing 1 and the collector plates 4 is filled with plastic 5. To one side of the groove in the corner area at the larger base of the trapezium there is an additional annular cavity 6 connected to the adjacent groove at least one axial hole 7 made in the housing 1.

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displaced upward into the outer space through the opening 7 and subsequently through the opening 10. In the case of some inevitable deviations of the collector from the vertical position, the development of the cavity in the axial direction provides the necessary insulation thickness in this place, even if a small amount of air remains in the upper part of the cavity.

According to the invention, uniformity of the working insulating layer of plastics is ensured, which in such structures has a small thickness, and thereby an increase in the electrical strength, insulating layer and reliability of the collector.

Form, l. and invention

The collector of an electrical machine containing a metal housing with

After the package is pressed, the collector-25 trapezoidal annular grooved plates into the cavity between the collector plates 4 and the housing 1 fill the plastic 5, for example, the epoxy resin is hard. Before pouring, the cavities of the collector are hermetically sealed with cylinders 8, which are formed by winding glass tape smeared with epoxy glue. The housing is provided with openings 9 for insertion of the pumping gear and 10 for the air outlet and the control of the filling end.

The collector is installed in such a way that the cavities b are directed upwards. Air inclusions in liquid plastics during the process

Compiled by V. Chernova Editor N. Slobod nickname i Techred M. Khodanych Proofreader L. Pilipenko

Order 6371/48

Circulation 625 - Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, st. Project, 4

displaced upward into the outer space through the opening 7 and subsequently through the opening 10. In the case of some inevitable deviations of the collector from the vertical position, the development of the cavity in the axial direction provides the necessary insulation thickness in this place, even if a small amount of air remains in the upper part of the cavity.

According to the invention, uniformity of the working insulating layer of plastics is ensured, which in such structures has a small thickness, and thereby an increase in the electrical strength of the insulating layer. and collector reliability.

Form, l. and invention

The collector of an electrical machine containing a metal housing with

mi, in which the shanks of collector plates, which follow the shape of the grooves, are engraved, and the gap between the body and the plates is filled with plastic, characterized in that, in order to increase reliability by ensuring uniformity of the insulating layer, on one side of the groove in its corner at the larger base of the trapezoid, an additional annular floor is added to the groove, made in the housing and connected to the adjacent groove by means of at least one hole made in the housing.

Claims (1)

Claim The collector of an electric machine, comprising a metal casing with trapezoidal annular grooves, in which are placed the shafts of the collector plates, repeating the shape of the grooves, and the gap between the body and the plates is filled with plastic, which differs in that, in order to increase reliability by ensuring uniformity of the insulating layer , on one side of the groove in the area of its angle at the larger base of the trapezoid, an additional annular cavity · adjacent to the groove adjacent to the adjacent groove means, at least one opening in the housing vy40 complements.