JPS61199439A - Stator of rotary electric machine - Google Patents

Abstract

PURPOSE:To reduce the number of crossover tracks by providing a function as a crossover track at a binding ring by connecting partial leads to the ring for supporting the tracks. CONSTITUTION:The coil end 14 is supported through a spacer 18 by an annular binding ring 16 bound to cleat 17. Four crossover tracks 2-5 are disposed at axial outside from the coil end 14. Three leads 19, 20, 21 to be connected by neutral point crossover track are connected to the ring 16. The ring 16 is provided in a circumferential space B of a frame, an insulating film 24 is coated so as not to electrically contact with the end 14 of the stator coil and other stator components, and to have a function as the crossover track.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a stator used in a rotating electric machine such as an induction motor.

[Problems such as technical contradictions of the invention]

Generally, a stator of a rotating electric machine has a plurality of stator coils wound around a thrower L- formed in a stator core, and the stator coils are connected to a phase U through a crossover wire to form a predetermined winding. The circuit is configured to form a line circuit.

FIG. 2 is a developed wiring diagram of the coils of this J, 4-pole, star connection, 36 coils. In the stator coil, the coil side 22 is wound inside the stator core shaft 1, and the coil ends 14 at both ends are overhanged from the thrower 1~, and the leads 19, 20, 21 are formed from the coil ends 14. has been derived. The openings 19 and 20 degrees 21 are connected to each other by a neutral connecting wire 1.

Similarly, the other stator coils have leads led out from the coil ends, and these leads 11 are connected by crossover wires 2 to 13.

FIG. 3 is a sectional view of the conventional stator along the line A-Δ in FIG. 2. FIG. Inside the stator core 15, the stator coil -
1 coil side 22 is wound, the coil end 1/l overhangs from the stator core 15, and the crossover wire 1
~5 are arranged in the stator space. Here, the coil end 14 has a cantilever supported structure by the stator core 15,
Because the effects of magnetic imaging and external vibrations are directly transmitted, T
Bind ring 16 on the outer circumference of the end of 1/l
will be arranged. This binding ring 16 is made from an annular body made of iron or non-silver, and is installed between the coil end 14 of the stator coil and the frame 23 of the rotating electric machine, and is installed at several locations on the inner circumference of the room.・The cleat 17 is tied to support the -C coil end 14 via an insulating spacer 18.In this way, the spacer in the circumferential direction of the frame 23 is attached to the stator at 45. - Because the bind ring 16 and cleat 17 are arranged inside the 13,
The crossover wires 1 to 5 are arranged within the space C in the axial direction. Moreover, even though there are a large number of crossover wires, it is necessary to insulate the crossover wires from each other, to prevent magnetic vibrations, external vibrations, etc. (to prevent the crossover wires from coming into contact with the phase Since a certain amount of space is required in between, the space cover in which the crossover wire is disposed affects the size of the rotating electrical machine, and there is a problem in that it is difficult to miniaturize the rotating electrical machine.

[Purpose of the invention]

The present invention has been made to solve the problems mentioned above, and therefore aims to provide a stator that can reduce the number of crossover wires and reduce the size of the machine. There is a thing C.

[Summary of the invention]

In order to achieve the above object, the fixing r of the rotating electric machine according to the present invention connects a part of the 1" outlet to the binding ring that supports the crossover wire so that the binding ring also functions as a crossover wire, It is characterized by a reduction in the number of crossover lines.

(Embodiments of the Invention) Hereinafter, embodiments of a stator for a rotating electric machine according to the present invention will be described with reference to FIG.

Figure 1 is a cross-sectional view (.
From the end of the stator core 15, a stator coil end 14 is hung with a Δ-bar, and this coil end 1z is connected to an annular binding ring 16 bound to the creases 1 to 17. J, Rispley-18. In addition, four crossover wires 2 to 5 are arranged outside the -1 end 14 in the b-axis direction. 19,20
．． 21 is connected to the Mrj binding ring I Ci. This binding ring 16 is stepped within the space [3] in the circumferential direction of the frame (and is in electrical contact with the coil end 14 of the stator 1 and other stator components 4A). An insulating coating 24 is applied to prevent the wires from turning, so that it can also function as a grip wire, etc. Furthermore, it is possible to omit the neutral point crossover wire 1 shown in the conventional example in FIG. In this case, the binding ring 16 is formed of a 1M electrically conductive material such as iron (J phase, The potential at one point during each of the phase and W phase is zero, and it is rare for a potential to occur due to an imbalance among the three phases, so the bind ring 16 is It may be made of the same material to increase the strength.

In the present invention, the three openings 19.20.degree. 21 may be connected to the binding ring 16 at 1, and the other 1] opening may be connected to the binding ring and 21 may serve as a crossover wire. Three openings for star connection 19.20.2
1 connected to the binding ring 16, the neutral point crossover wire is longer than the other crossover wires, so the space saving rate is good. On the other hand, if it also serves as a crossover wire other than the neutral point crossover wire, the space saving rate will decrease because the two 1" extensions are connected, but in any case, part of the crossover wire will be deleted. Therefore, it is possible to omit the space D in the axial direction. Also, in this case, since current flows through the binding ring 16 when the electric machine is driven, it can function as a connecting wire and a wire, and its cross-sectional area -b is large.
# It is possible to cover the moon with a small electric rate (too much).

(Effects of the Invention) As described in 1-1 below, according to the present invention, the L1 output derived from the stator "I" is connected to the binding ring disposed as the strength part "I", and the binding ring is connected to the crossover wire. J, sea urchin 1) that bends the function! This C, the number of crossover wires can be reduced,
The stator can be made smaller.

Therefore, it is easy to downsize the rotating cloth, reduce the number of crossover wires, and simplify the sewing of the rotating electric machine.
Cheap (provided by J Kotogagukiru).

4゜ Simple drawing! -14i Explanation 1F is a sectional view of essential parts of an embodiment of the stator according to the present invention, FIG. 2 is an expanded wiring diagram of the stator ml,
The figure is a cross-sectional view of the conventional example shown in FIG. 1 along the line Δ-Δ. .

1...11+t! 1-point crossing point, 2-13...crossover wire, 14...Z, J Il'n1ki, 15...stator core, 16...bind ring, 19-20...opening.

Applicant's agent Kiyoshi Inomata Figure 1

Claims (1)

[Claims] 1. A plurality of stator coils wound in slots of a stator core, an outlet led out from each stator coil, and a plurality of stator coils connected to the outlet and interconnecting the stator coils. and a binding ring arranged around the outer periphery of the coil end of the stator coil, and a part of the lead is connected to the binding ring so that it also serves as a crossover wire. Stator of rotating electric machine. 2. A stator for a rotating electrical machine according to claim 1, wherein the opening is connected so that the binding ring also serves as a neutral point crossover wire.