SU1700665A1 - Armature of electric machine - Google Patents

Abstract

This invention relates to collector electric machines. The purpose of the invention is to increase reliability by reducing the number of electrical connections and eliminating the possibility of an imbalance during operation. The armature contains the coils 1 and the shaft 2, with a collector mounted on it. The latter consists of a carrier part 3, made of an insulating material, fixed on the carrier part and a disk capacitor installed under the NSD. One plate of the disk capacitor 5 is divided into segments 6. Around the circumference of the carrier part 3 there are hollows 7 located between the collector plates 4 and segments 6 filled with conductive enamel. At least one pin 8 of each coil 1 passes through one of the recesses of the carrier part 3. The above pin 8 passes between the shaft 2 and the disk capacitor 5, whose segments 6 extend beyond the limits of the carrier part 3 of the collector. 7 il. H (L

Description

The invention relates to collector electric micromachines and is intended to ensure the fixation of a disk capacitor reducing the level of radio interferences, reliable connection to the electrical circuit of the core.

Known collector of an electric machine, containing collector plates located on the carrier. The collector is provided with conducting and contacting plates arranged respectively between the bearing part of the collector and the collector plates. The contacting plate is made of a material with a high dielectric constant. The disadvantage of the described collector is the lack of special means for ensuring reliable electrical contact between the conductive plate, the contacting plate and the collector plates.

Measles of an electric machine are also known, containing coils, a collector consisting of a carrier part, made of insulating material, collector plates with lobes mounted on the carrier part, a capacitor mounted under the carrier part from the side opposite to the collector plates, one capacitor plate divided into segments. The anchor is provided with electrically conductive resilient elements and an insulating plate. Under each collector plate in the bearing part there are holes in which elastic elements are located that are electrically in contact with the segments of a single plate of a disk capacitor. In the bearing part is made deepening

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l insulating plate, which is sludge to close the second plate of the condenser and fixed by the lobes of the collector plates.

. The disadvantages of the described core are the possibility of radial displacement of the lawn capacitor within the tolerances on its external diameter and internal diameter of the cavity in the carrier part of the collector, where it is installed, which leads to 10 imbalance during operation, as well as the fact that the output of the core coil and the segment of the plate of the disk capacitor is carried out at different points of the collector plate, which reduces the reliability of the core.

The purpose of the invention is to increase the reliability of the core by reducing the number of electrical connections and eliminating the possibility of an imbalance in the process of operation.

This goal is achieved by the fact that the bark of an electric machine contains coils with leads for connection to a collector and a shaft on which a collector is mounted. The latter contains a carrier part, made of insulating material and having circumferential grooves, collector plates fixed to the carrier part, and a disk capacitor, 30 which is installed under the carrier part from the side opposite to the collector plates. One capacitor plate is divided into segments, the number of which is equal to the number of collector plates, and the number of grooves 35 is chosen equal to the number of collector plates and condenser segments. The recesses are located on the outer surface of the carrier between the collector plates and the capacitor segments 40. At least one reel passes through one recess. The recesses are filled with conductive enamel so that a mechanical connection is formed between the carrier part, the collector plates 45, the disk capacitor, and the coil terminals. The diameter of the carrier is selected smaller than the diameter of the disk capacitor.

FIG. 1 shows the supporting portion 50 of the manifold, top view; in fig. 2-disk capacitor, view of the lining, divided into segments; in fig. 3 - measles of an electric machine, top view; coils are conventionally not shown; in fig. 4 - the same, front view; 55 in FIG. 5 - measles of an electric machine without a collector bearing part; Fig. 6 is an electrical circuit of the electric machine core, the coils are connected by a star; in fig. 7 - the same, the coils are connected by a triangle.

The anchor of the electric machine contains the coils 1 and the shaft 2 with a collector mounted on it. The latter consists of a carrier part 3, made of an insulating material, collector plates 4, mounted on the carrier part 3, and a disk capacitor 5, designed to suppress radio interference installed under the carrier part 3 on the side opposite to the collector plates 4. One plate of a capacitor 5 divided into segments 6, the number of which is equal to the number of collector plates 4. Receiver 7 are made around the circumference of the bearing part 3, the number of which is equal to the number of collector plates 4 and segments 6. Recesses 7 are located on the outer surface of the carrier part 3 between the collector plates 4 and the segments 6 of the capacitor 5. Depending on the wiring diagram of the coils 1, at least one coil 1 passes through one recess 7. For example, when a star is connected, one passes through each recess 7 pin 8, and when implementing the delta connection scheme, two pins 8 of the respective coils 1. Recesses 7 are filled with conductive enamel, for example XC-928, so that a mechanical connection is formed between the carrier part 3 and the collector plates 4 of the disk capacitor 5 and the terminals 8 of the coils 1. This forms a reliable electrical contact between the collector plates 4, segments 6 and the terminals 8. For visual monitoring of the position of the disk capacitor 5 relative to the collector plates 4 before applying conductive enamel, the diameter of the bearing part 3 is less the diameter of the disk capacitor 5.

Claims (1)

Claims of the Invention An anchor of an electric machine comprising coils with leads for connection to a collector, a shaft on which a collector is mounted, containing a carrier part made of insulating material and having a circumferential recess, a collector plate fixed to the carrier part, and a disk capacitor. mounted under the carrier part from the side opposite to the collector plates, one capacitor plate divided into segments whose number is equal to the number of collector plates, and the number of recesses is equal to the number of collector plates and condenser segments, characterized in that, in order to increase reliability by reducing the number electrical connections and eliminate the possibility of an imbalance during operation, the recesses are located on the outer surface of the bearing part between the reservoir Plates and segments of the disc capacitor plate, through one groove passes the output of at least one coil, the grooves are filled with conductive enamel so that a mechanical connection is formed between the carrier part of the collector plates, the disk capacitor and the coil terminals. condenser.