JPS59178934A - Armature winding - Google Patents

Abstract

PURPOSE:To facilitate the treatment of the end wire at the time of forming a coil end by drawing the starting and finishing ends of a set of coils disposed concentrically along the side of the coil having the largest pitch. CONSTITUTION:An end wire V2 is led along the coil side of the coil C1 having the longest coil pitch of coils C1-C4 for forming one pole of a main coil, i.e., along the slot 10. On the other hand, the number of terminals of the shortest coil C4 associated in the slot 4 is bridged over the slot 10, further bridged over the slot a through the slot 10, and the terminal wire U2 is drawn through the slot 1. The starting and finishing ends of the coil of one set disposed concentrically are drawn from the side of the coil of the largest pitch. Accordingly the treatment of the ends of the coil at the forming the ends of the coil can be simplified.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to an armature winding employing concentric winding.

"Background of the Invention" In an armature winding that employs concentric winding, multiple coils with different pitches are wound concentrically, and these multiple coils are wound continuously to form one pole. There are two ways to continuously spring multiple coils with different coil pitches, one of which is:
For the bones, the coil with the longest coil pitch is wound first, then the hooked coil with the coil pitch is wound in order, and finally the coil with the thinnest coil pitch is wound. For the other one, conversely, wind the coil with the shortest coil pitch first,
Coils with longer coil pitches are wound in sequence, and the coil with the longest coil pitch is wound last. therefore,
The winding start terminal wire and the winding end terminal wire of the coil are such that one terminal wire can be guided along the coil side of the coil with the longest coil pitch, and the other terminal wire can be guided along the coil side of the coil with the shortest coil pitch. As described above, the armature winding is guided along the coil side and has the same diameter and winding.
In CFA, the terminal wire is always led from the coil with a short coil pitch, and this causes many undesirable results when incorporating the coil into the magnetic iron IL.

Part 1 (9) shows an armature winding that uses conventional concentric winding.
The one with 20 poles and slots is shown.

This figure will be explained below. i, 2. 3.・
....

20 is the slot, the solid line is the main coil, the broken line is the auxiliary coil,
U, V, X, and Y are output terminals, U,, U,.

■I*V9+XIrYI indicates the terminal wire of the coil.

One coil C1 is formed by crossing slots 1 and 10, one coil C2 is formed by crossing slots 2 and 9, one coil C3 is formed by crossing slots 6 and 8, and then one coil C3 is formed by crossing slots 6 and 8. One coil C across slots 4 and 5
These four coils C,,O7,0,,C
4 forms one pole. Similarly, coils c/1, C'2, C'3, and cL are formed across slots 11 and 2, 0.12, 19.16, 18.1A, and 17, respectively, and these four Coil c/1, C'2, c/,,
Another pole is formed by C'4. The auxiliary coils are installed at positions offset from the main coil by a predetermined electrical angle, and the coils A, , A2 . . . form one pole. A3. A4 and other 1
Coils forming two poles A', , A'2, A/3, A
'4 means continuous winding.

As is clear from this figure, in the main coil, the coils O, HC! form one pole. 9 g O% %0
From the set No. 4, a terminal wire V2 is derived along the coil side of the coil C1 with the longest coil pitch, that is, along the slot 10, and a terminal wire V2 is derived along the coil side of the coil C4 with the shortest coil pitch, that is, along the slot)/L. A line U is derived. Coils c', , c forming the other pole
'2. From the examination of c', , c', the coil side of the coil C/1 with the longest coil pitch, i.e., the edge end green V1 is derived along the slot 11, and the coil C4 with the shortest coil pitch is derived. A terminal wire U is led out along the coil side, that is, along the slot 17. Connect the two terminal wires ■ and ■ in common and connect them to the output terminal V, and then connect the terminal wires U and U.

Connect to the output terminal U by making a common connection. Coils A, , A2 . forming one pole of the auxiliary coil. A...

Coil AI2, forming the other pole of A4, A/
2, A/5, A/, are connected in series, so they are continuous, and the terminal wire x1 is led out along the coil side of coil A, that is, along the slot 5, and the terminal wire iy+ is led out along the coil side of the coil A/4, that is, along the slot 1H.

Then, the terminal line x, the outlet shell, and the line terminal X are connected, and the terminal line Y1 is connected to the outlet W1 terminal Y.

After the armature winding (armature winding) is assembled into the magnetic core, the coil end is mechanically pressed using a hydraulic press, pneumatic press, etc. in order to keep the shape and dimensions of the coil end to a predetermined value. Pressure molding is performed using a molding jig.In other words, the coil end of the armature winding shown in No. 1N is molded as shown in Figure 2.In this figure, S
C is a magnetic core, and OJ is an outer diameter side forming jig. This jig OJ is divided into four parts and presses and forms the coil end of the famous coil in the inner diameter direction. The tool J is a forming jig on the inner diameter side, and this jig J is divided into six parts, and presses and forms the coil end of each coil in the outer diameter direction. Although not shown in the figure, a jig for crushing the coil end is also placed above the coil end.

When forming the coil end, the terminal wire U of the coil.

U21■l"21xllYI has an indefinite shape, so
If this is not held in a predetermined shape and then molded, it will be pinched between the molding jigs 2 and 3 and the magnetic iron 1, or it will be compressed into an abnormally small shape. Damaged or severed.

Therefore, during molding, the terminal wire is guided along the coil end as shown in FIG. 2 and pulled out from the divided portion of the jig 2, so that its shape is maintained. At this time, terminal wires U, , U2 . As shown in FIG. 6, Y crosses over the coil end and is guided to the dividing part of the jig OJ. Therefore, this terminal iU+*UNI Yt intersects the conductive wire constituting the coil end of each coil at almost a right angle.

This has the disadvantage that the conductor's insulation film is damaged and the dielectric strength of the coil is reduced because a concentrated load is applied to this part. For this reason, in the past, such terminal wires U, , U, , Y, were placed between the conductors in the coil end at mJ when the coil was inserted into the slot so that the number of intersections with the conductors forming the coil was as small as possible. In some cases, a film or tube of insulation has been inserted into the intersection prior to the coil forming operation.

However, since such work relies heavily on manual labor, the coil forming process requires a large number of man-hours.

In the example shown in FIG. 3, the intersection is located on the inner diameter side of the coil end, but it may be located on the outer diameter side of the coil end depending on the procedure for inserting the coil winding. However, in this case as well, u'i occurs during the same period as above. In this point,
Terminal Jj pulled out from the coil with the largest coil pitch! ■+, ■s.

L (rim 3 As shown in the diagram, it can be pulled out without crossing the coil end, so there is no problem.

In order to solve the above problem, an armature winding as shown in FIG. 4 can be considered. This figure shows a single-phase, two-pole, 20-slot device, similar to the one in FIG.

The difference between this and the one in FIG. 1 is that the terminal wire is not drawn out through the coil side of the coil with the shortest pitch, but is drawn out through the coil side of the coil with the longest pitch.

In other words, instead of pulling out the terminal MU and the coil C' installed in the 1l-t slot 17 along the coil side, the terminal MU can be straddled from the slot 14 to the slot 20, or
Further, the holder is passed through the slot 14 completely from the slot 17, is placed over the slot 20, and is pulled out through the slot 20. The terminal wire U is not pulled out along the coil side of the coil C4 assembled in the slot 4, but can be directly straddled from the slot 7 to the slot 1, or can be further passed through the entire length from the slot 4 to the slot 7, and then inserted into the slot 1 again. ＝Slot 1
Pull it out all the way. The terminal wire Y 1
5 and pull it out through the slot 15. The terminal of the auxiliary coil A ++tNH can be passed directly from the slot 8 to the slot 14, or from the slot 11 to the slot E1m and across the slot 14, passing through this slot 14 all the way to the terminal wire of the coil A'1. Continuous to. Others are the same as before.

If the winding start end and winding end of a pair of coils arranged concentrically in this way are drawn out along the coil side of the coil with the largest pitch, these terminal wires U□, U,
, Y, all the terminal wires V, , V, , X, can be handled in the same way, and the processing of the terminal wires during coil end molding can be extremely simplified.

In addition, in order to pull out the terminal wire from the coil side of the coil with the largest pitch, the conductor 7'I: extends from slot 7 to 1, from slot 14 to 20, and then from slot 1 to 14. In this case, this conductor crosses the coil end diagonally. Therefore, the four wires that cross the coil diagonally and the conductor wire that forms the coil end cross diagonally,
The conductive wires are in line contact rather than point contact, and the contact area is larger than in the conventional case. Therefore, even if the coil end is press-formed using the jig 2.6 during molding, the load is dispersed because the area of the contact portion is large, and damage to the conductor wire can be drastically reduced.

However, the coil end line continuous to the minimum pitch coil≠1 The coil sides drawn out are as follows in FIG. That is, in the main coils Cr and C, slots 1 and 2 are connected to slots 10 and 11.
The number of zero conductors is as large as one turn, and there is an imbalance between both coil sides. In addition, main coil C4 and Q/
, the number of conductors in slots 7 and 14 is greater than that in slots 4 and 17 by an amount corresponding to one turn, and the number of conductors is unbalanced between both coil sides. Furthermore, in the auxiliary coils A1 and A'1, the number of turns of the conductor in slots 14 and 15 is larger than that in slots 4 and 5 by an amount corresponding to 11 turns,
There is an imbalance between both coil sides. Furthermore, auxiliary coils AI and A', [where slots 11 and 1
8, the number of conductors in slots 1 and 8 is equal to 11 turns, and there is an unbalance between the two coil sides.

Therefore, in an armature winding with a high inter-slot conductor space factor, there are multiple coil terminal wires or thick @ (conductor diameter approximately 9 t O
(1111) or more. ), then
The workability of inserting the coil into the slot is greatly reduced, and it may become difficult to insert the coil.

[Purpose of the invention]

The present invention solves the above-mentioned deficiencies, 4. -4, and its purpose is to facilitate the processing of terminal wires during coil forming work, and to separate the conductive wires forming the terminal wires from the conductive wires forming the coil ends. The object of the present invention is to obtain an armature winding in which damage to the terminal wire caused by contact can be drastically reduced, and the number of conductors on both sides of each coil can be made the same.

[Summary of the invention]

That is, according to the present invention, the above object is achieved by coiling one of the winding start terminal wire and winding end terminal wire of a plurality of coils having different coil pitches which are arranged concentrically and wound continuously. Pulling out from the minus coil side of the coil with the longest pitch, and pulling out the other terminal wire from the other longest coil side via an arbitrary coil so that the number of conductors on the coil side of each coil is the same. achieved by.

[Embodiments of the invention]

FIG. 5 shows an embodiment of the present invention, which is a single-phase, two-pole, 20-thread system similar to those of FIGS. 1 and 4. The difference between this and the ones in Figures 1 and 4 is that the terminal wire is not pulled out through the coil side of the coil with the shortest overall pitch, but is pulled out through both coil sides of the coil with the longest pitch. be. In other words, the terminal wire U is not pulled out along the coil side of the coil Q' installed in the slot 17, but is drawn out from the slot 11.
Straddle it and get 111 more slots! 1, straddle the slot 20, and pull it out completely through the slot 20. Terminal line U.

Do not pull out the coil C4 installed in the slot 4 along the coil side, but pass it through the slot 10, pass it through the slot 10 completely, straddle the slot 1, and pull it out through the slot. The terminal line Y is inserted into the slot 18 11
Also, do not extend nn along the coil side of coil A'4, straddle slot 4, and further pass through slot 4 completely, and slot 1
5 and pull it out through the slot 15 completely. The terminal wire of the auxiliary coil A crosses over the slot 5rC and passes through the slot 4 all the way through the slot 14.
The entire wire is continuous with the terminal wire of coil NI. Others are the same as before.

The winding start end and winding end of a pair of coils arranged concentrically in this way are placed on the coil side of the coil with the largest pitch.
If you pull out the stand, these terminal wires U,, tJ,
,Yt terminal line v,,V,,X,! - They can be handled equally, and the processing of terminal wires during coil end molding can be extremely simplified.

In addition, in order to pull out the terminal wire from the coil side with the largest pitch, the conductor ≠: extends from slot 7 to slot 1, from slot 11 to 20, and then from slot 1 to slot 14, but in this case , this conductor crosses the coil 3 end diagonally. Shif? :, Because the conductor that crosses the coil diagonally and the conductor that forms the coil end cross diagonally, and the conductors are not in point contact with each other (they are in line contact, and the contact area is 1-larger than the conventional one. Therefore, even if the coil end is press-formed using the jig 2°3 during molding, the load is dispersed because the area of the contact portion is large, and damage to the conductor wire can be drastically reduced.

In addition, since there is no unbalance in the number of conductors between both coil sides of each coil, the coil terminal dose is reduced; It never happens.

On the other hand, y:n derived from the conventional minimum pitch coil
It was necessary to insert an insulator at the intersection of the thick wire and the coil, but this is a problem! It is possible to make t unnecessary.

In addition, in the prior art shown in Fig. 1, insulator tubes were inserted into the parallel connections of the terminals U□ and U≠;, but if the terminal wires U and U were connected in parallel as shown in Fig. 4, , are pulled out from approximately the same position, so only one insulator tube needs to be inserted, and the number of insulating tubes and insertion steps can be reduced by approximately half.

Furthermore, since the coil terminal wire drawn out from the minimum pitch coil is located in the gap between the coil poles, the coil end Dimensions can be reduced.

Fig. 6 shows another embodiment, in which the continuity between the coil poles of the auxiliary coil is the same as in the conventional example shown in Fig. 1, and the rest is exactly the same as the embodiment shown in Fig. 5. be.

Figures 7 to 11 show cases in which the present invention is applied to a 1id 3-phase armature winding, where the 71st slot is a 6-phase, 2-pole, 24-slot, and Figure 81 is a 3-phase, 2-pole, 60-slot star. Combined wiring, Figure 9 shows 3-phase A pole parallel winding, Figure 10 shows 3-phase 4 to 6
Complete story of further examples of 6 slots, 11th; evil (d3
Phase 4 Box A with 8 slots is shown. In these figures, the solid line indicates the U4;[l coil, the broken line indicates the ■ phase coil, and the chain line indicates the W phase coil.

As is clear from these figures, the present invention can be applied to a three-set armature winding, and is not limited to the number of phases, and can also be applied to a multi-phase armature winding. It is possible.

FIG. 12 shows still another embodiment of the present invention, in which the terminal wire U is not pulled out along the coil sides C, aX, but instead extends from the coil sides C4a to the coil sides c, b, the coil sides C, a, = z side C, t), tv side C, a, :r iz + z side C
The coils are drawn out along coil sides C and a in the order of 1\coil side CIa and ≠2 respectively. With this method, compared to the above-mentioned one, by making it ≠: with a plurality of Hr, the angle at which the continuous wire spanning between the coil sides intersects with the conductor wire of the coil can be further relaxed. . In drawing out the coil terminal wires in the embodiment described in @, the straddling pitch may be set to an f-law pitch as shown in FIG. 13, if necessary.

〔Effect of the invention〕

As is clear from the above description, according to the present invention, the terminal wire can be easily processed during coil end molding, and the number of man-hours required for the molding operation can be reduced. In addition, since the terminal wire is drawn out by fitting it to the side of the coil with the largest pitch, there is no need to make the terminal wire and the conductive wire constituting the coil orthogonal when forming the coil end. Therefore, the four wires connected to the terminal wire cross each coil diagonally at the coil end, but since the intersection is diagonal compared to the conventional one that crosses at right angles, the contact area can be increased and the load can be distributed. 1, the damage to the conducting wire during molding can be drastically reduced. Furthermore, since the number of conductors on both coil sides of each coil can be made the same, the ease of inserting the coil into the iron core can be greatly improved.

[Brief explanation of the drawing]

Figure 1 is an exploded view showing a conventional armature winding, and Figure 2 is a developed view of a conventional armature winding.
Figure 3 is a diagram for explaining the winding forming process shown in Figure 1.
FIG. 4 is an exploded view showing an improved armature winding; FIG. 5 is a view showing an embodiment of the present invention; Figures 6, 7, 8, 9, 11 and 11 are developed views showing other embodiments of the present invention, and Figures 12 and 13 show still other embodiments of the present invention. It is a partially expanded view showing an example. c, ,c, ,c, ,c, ,a
t, ,c', ,c', ,c4,
AH* AHI, AI, A4, A'
l * A-+ A's * A'4,
i Coil, U, ,U, ,V, ,V, ,
X, , Y, , terminal line.

Claims (1)

[Claims] 1. In an armature winding having a plurality of concentrically arranged and continuously wound coils with different pitches, either a winding start terminal wire or a winding end terminal wire of the plurality of coils. One terminal wire is pulled out from one coil side of a coil with a long coil pitch, and the other terminal wire is passed through an arbitrary coil so that the number of conductors on each coil side is the same. The armature winding is characterized by being drawn out from the side of the other coil with the longest pitch. 2. The armature winding according to claim 1, wherein the transition to the coil is performed at one predetermined coil end side of each coil.