DD286694A5 - ARRANGEMENT FOR INSULATING THE HEADLINK AND FOR A TARGETED PAINT FINISHING - Google Patents

Abstract

The invention relates to an arrangement for the insulation of the winding head and to a specific Lackfuehrung. The invention has for its object to achieve a targeted Lackfuehrung during Traunufeltraenkens, using moldings for the insulation of the winding head. The object is achieved by a cylindrical hub part, consisting of two concentric tube parts, between which an axially extending annular gap (9) or in place uniformly distributed over the circumference axially extending channels (14) are arranged, wherein the auszen lying tube part (5) in its length corresponding to the largest projection of the Laeuferwicklung (7) compared to the inner tube part (4) is held shorter and the annular gap (9) or the channels (14) extend towards the zahnkopffoermigen disc part (6). Winding; Laeuferisolierstern; Molding; Traeufeltraenken; Lackfuehrung; Annular gap; Channels}

Description

For this 2 pages drawings

Field of application of the invention

The invention relates to an arrangement for the insulation of the winding head and to a targeted paint guide during trickle impregnation, in particular for rotor windings of commutator. To isolate the winding head and the Wicklur.gsanschlußdrähte against the front side Läufererblechpaket and with respect to the rotor shaft, the arrangement is designed as a hub-like molded part such that a targeted paint run during the Träufelt'änkvorganges and thus at the same time a kind of paint barrier for commutators with continuously recessed lamellar insulation is reached.

Characteristic of the known state of the art

Are known moldings for the isolation and determination of Wickeikcpfes and the winding connection wires to electrical machines in various designs. So there are simple Läuferendscheiben for the frontal isolation of Läufererblechpaketes with and without hub for the simultaneous wave isolation to complicated designed Läuferendscheiben with form and Niedcrhalteeinrichtungen for the rotor winding and kegliger support body for holding and guiding the winding connection wires.

In dor practice, however, has a detrimental effect during the Träufeltränkprozessos that at the point where the winding connection wires leave the winding head and lead from there to the commutator, the impregnation pad drips or flows on the winding connection wires on to the commutator. When using hook commutators without Lacksporre this has a particularly disadvantageous effect that the impregnating coat adds the Kommutatorschlitze.

Although impregnating varnish is supplied in sufficient quantity, sometimes even impregnating varnishes from unrebated rooms in the winding head

Attempts have been made to hold the impregnating varnish by inserting absorbent material. Although such absorbent material prevents ointment to a certain extent, but the individual resin drops are immediately distributed over a larger surface area and thus hinder at the same time an undisturbed escape of air between the wires. This measure does not support the necessary penetration of the impregnating varnish into the winding interior, but rather makes it even more difficult.

Additional measures in the form of separate bag inhibitors are also required to prevent the commutation Jto'schlit20 from becoming clogged with impregnated varnish or, if necessary, corresponding reworking is necessary.

Zio! the invention

The aim of the invention is to eliminate the disadvantages described in the bekannton arrangements for the insulation of the winding head and the winding connection wires with little additional effort.

-2- 286 694 Presentation of the Invention

The invention is based on the object, the usual moldings for the insulation of the winding head and the Winding connection wires with respect to the end-side rotor laminations and relative to the rotor shaft to be designed so that

achieved in addition to a good insulation effect at the same time a targeted paint guide during the trickle impregnation process

According to the invention the object is achieved in that on the rotor shaft, an insulating body with an axially cylindrical Hub part and a radial zahnkopfförmigon disc part is arranged. The cylindrical hub part as well

Tooth-shaped disk part can also be designed as separate parts. The cylindrical hub portion consists of zweikonzentrisch arranged pipe parts, between which there is an axially extending annular gap.

Instead of the annular gap, it is also possible to uniformly distributed circumferentially, to arrange axially extending channels. The

outer tube part is kept shorter in length according to the projection of the rotor winding than the inner tube part.

Advantageously, the annular gap or the channels expand towards the tooth head portion log. End face and extending radially are circumferentially on the tooth-like disc part in the region of the cylindrical hub part

preferably distributes breakthroughs and arranged on the teeth elevations. The inner tube part can advantageously be completed by the rotor shaft when completed by the rotor shaft, with the channel-forming axial running

Webs run over the entire length of the N l lienteiles and thereby in the commutator side area a kind of splined shaft

form.

The axially extending channels or the annular gap between the pipe walls have a due to their small width

very high capillary action so as to take up the excess of impregnating varnish, which has dripped up to now or dripped on the rotor connecting wires to the commutator during the drenching process, and place it in the interior of the

Forward winding head and thus support the impregnation process from the inside out. Ausführungsbelsplel

The invention will be explained in more detail below using an exemplary embodiment. The accompanying drawings show

Fig. 1: partially cut rotor with inventive arrangement in annular gap design 2 shows an axial section of the arrangement according to the invention in channel design Fig. 3: corresponding side view after Firj. 2 Fig. 4: axial section of the arrangement in which the rotor shaft replaces the inner tube The arrangement according to the invention in the form of a rotor insulating star in the mounted state on a rotor is shown in FIG Rotor shaft 1 between rotor core 2 and commutator 3 is a double-walled hub arranged through the inner Tube part 4 and the outer tube part 5 is formed. The double-walled hub is with the tooth-shaped disc part. 6

directly connected and both form a body. While the inner tube part 4 abuts directly axially on the commutator 3, the outer tube part 5 is set back in relation to the projection of the rotor winding 7 with respect to the inner tube part 4 and spaced from the commutator 3.

The pipe parts 4 and 5 form the annular gap 9, which is advantageously extended towards the tooth-shaped disk part 6. At the transition point between the hub and disc part tangentially distributed openings 10 are arranged while

Radially leading elevations 11 are arranged on the front side in the region of the teeth, which elevates the tooth-head-shaped disk part 6 of FIG

Rotor leakage packet 2 spaced. The Wicklungsanschlußdrähto 12, coming from the rotor winding 7, are directly on the pipe parts 4 and 5 and have

thus a direct contact with nozzles. During the drizzle, the impregnating varnish reaches the tubular parts 4 and 5 via the winding wires and is drawn into the annular gap 9 as a result of the capillary action.

In the area of the tooth-head-shaped disk part 6, an enlargement of, by enlargement of the annular gap 9, an increased accumulation of Impregnating coat oranges. About the breakthroughs 10 and dio rnittols elevations 11 boabstandte Zahnkopfscheibe 6 vom Läufererblechpaket 2 passes the impregnating bag by the capillary action in the interior of the l.äuferwicklung 7. By a

Continuous rotation of the runner during the soaking process will result in uniform wetting of the outer and inner

Areas of the rotor winding 7 reached. Excess impregnating varnish drops due to gravity on the back of the toothed disc 6 from. This will make gloichiei'.io

make sure that the ^{tank is} connected to the ^drainage hose 12 by the trickle tank

Arrangement is received and derived. A continuation dos paint on the winding connection wires 12 to the Hook 13 of the commutator 3 and an intrusion into the Längsnuten same is thus prevented. Einu another embodiment in which the annular gap 9 is replaced by channels 14, Fig. 2 and 3. In this embodiment, are over

the circumference evenly distributed axially extending Stego 15 arranged, the part of the inner tube part 4 or at

Elimination thereof and Ersuti by the rotor shaft 1 part of the outer tube part 5 are, and this also

is reset relative to the webs 15 according to the projection of the rotor winding 7.

FIG. 4 shows an embodiment with only outer pipe part 5 and axially extending webs 15, in which the inner pipe part 4

is replaced by the rotor shaft 1.

By an axial profiling of the rotor shaft 1 with appropriate insulation and the axial Stego 15 and the inner Tube part 4 come to an end.

Claims (3)

1. An arrangement for the insulation of the winding head and a targeted paint run during the trickle impregnation, in particular for rotor windings of commutator, consisting of an insulating body with an axially cylindrical hub part and a radial tooth-shaped disc part, characterized in that the cylindrical hub part consists of two concentric pipe parts, between which an axially extending annular gap (9) or evenly distributed over the circumference axially extending channels (14) are arranged, wherein the outer tube part (5) in its length corresponding to the largest projection of the rotor winding (7) relative to the inside lying tube part (4) is kept shorter and the annular gap (9) or the channels (14) preferably extend towards the tooth-shaped disc part (6). 2. Arrangement for the insulation of the winding head according to claim 1, characterized in that the front side radially extending on the tooth-like disc part (6) in the region of the cylindrical hub part preferably openings (10) and on the teeth elevations (11) are arranged. 3. Arrangement for the insulation of the winding head according to claim 1, characterized in that the inner tube part (4) in the installed state by the rotor shaft (1) is replaced, wherein the axial channels (14) by webs (15) of the hub part or through corresponding profiling of the rotor shaft (1) are formed and preferably extend over the entire axial length of the cylindrical hub part.