JPS58186346A - Insulating device for rotary electric machine - Google Patents

Abstract

PURPOSE:To improve the yield of a material by connecting one of both ends of a pair of insulating sheets of interphase insulating paper via threads which has two intervals, the other via a thread, and forming the interval between the two threads narrower than the width of the end of Tees stator core, thereby preventing the displacement of the sheets. CONSTITUTION:Both ends between insulating sheets 11 are connected with threads 3 made of polyester, one of them is connected via at least two threads 3a in such a manner that the interval 12 is narrower than the width 14 of the end of the Tees 13 of a stator core 4. On the other hand, the both ends of the thread 3 are fusion-bonded by supersonic wave to insulating sheets 11. A pair of sheets 11 are formed with a notch 11a along the shape of the coil end 7a at the root between phases at the opposed centers, and at the outer end with chamfer 11b. Further, the interval 15 of the sheets 1 is set substantially equal to the axial length 5a of U-shaped slot insulator 6 to be inserted in advance into the slot 5 of the core 4.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a modification of correlation insulation of a coil end portion of a rotating electric machine.
-Contains related information.

Rotating electric machine Ilb! For single-phase machines, the coil end connection between the main winding and the auxiliary *ait is generally 5; and for multi-phase horizontal installations, the different phase windings at the coil end are generally isolated. This is a matter that has been considered by many woodworkers as a target for amalgamation in the manufacturing process of rotating electric machines. Conventional insulating paper for rotating electric machines will be explained with reference to FIGS. 1-13. Figure 1 is a flat view of paper, unlike the conventional one.
FIG. 2 shows a stator core 11r flush with two correlative insulating papers inserted between the stator coil ends, and FIG. 3 is a configuration diagram of the stator coil end windings. Figure 1 shows a correlation insulating paper 1, in which a set of insulating papers 2 for insulating between different phases at the coil ends are connected by a thread 3. - Protrusion 21 having a slit for system attachment is provided 0th order I; Insulating paper 2 is tied with polyester thread 3. Insert correlation insulating paper 1 between the different phases of the coil ends. Insert the U-shaped slot insulator 6 from the opening of the slot 6 of the stator core 4 shown in 2-1-, and then insert the ε varnish 5c two U-phase coils 7 using a coil insertion jig. 0th round molded with coil end 7ari molding machine;
The insulating paper 2 is inserted along the outer periphery of the V-phase coil 8 shown in the aS diagram, and the same process is repeated once for the W-phase coil 9. (In the coil winding diagram shown in Figure 8, the ws coil and the interrelated insulating paper l between the V phase and the W phase are omitted.
i in the slot 5 containing the U-shaped slot insulator 6;
The thread 3 of the correlation insulating paper 1 is accommodated, and the protrusion 2 is inserted into the opening at the end of the slot 5 and locked.

Since the insulation paper 2 of this - gold interlayer insulating paper 1 is a thin material in terms of insulation function, the repulsive force within the gate 6 due to the protrusions 2 & 1 is small, and the correlation isolation 111#, l is the s4. There are cases where the protrusion 2a protrudes from the slit 5 without being locked at both ends, and in this case, the correlative insulating paper 1 comes off the inner circumferential surface of the specified on-il end 7&, making it impossible to insert the next phase coil. Therefore, there is a gap A that needs to be corrected by returning the correlative insulating paper l to the predetermined insulating position C; ] The present invention improves the above-mentioned conventional drawbacks by making at least 10,000 two threads connecting both ends of the insulating paper of the correlative insulating paper, and narrowing the interval between the threads well in the tips of the teeth of the stator core. The purpose of this invention is to provide a correlation insulating device for a nine-turn machine by inserting and locking a thread into the stator core groove in contact with #.

(Embodiment 0 of the present invention) Hereinafter, i: An embodiment of the present invention will be explained with reference to Figs. 4 to 6. Fig. 4 shows correlation 1e showing an embodiment of the present invention.
IIi! Figure 5 is a drawing of the solid foot coil end clamping of the present invention, and Figure 6 is an enlarged *S diagram of Figure 5. However, the above-mentioned conventional and 41 parts will be denoted by "-" and detailed explanation will be omitted. Both ends of the insulating paper 11 are connected with threads 3 made of polyester or the like, one of which has at least two threads 3a, and the interval 12 is narrower than the width 14 of the tips of the teeth 13 of the stator core 4. do. One end of the thread 3 is provided by winding it with insulating paper 1 and 2 using ultrasonic waves or the like.

In addition, the shape of the pair of insulating papers 11 is 5 as shown in FIG.
The two opposing central sFi coil ends 7a are provided with a notch lla so as to follow the shape of the wire, and the outer ends are each woven with a th weave llb. is approximately the same as the axial length 5a of the U-shaped slot insulator 6 to be inserted into the slot 5 of the stator core 4. Then, inside the slot 5 into which the U-shaped slot insulator 6 was inserted in advance I: Separately C;
The wound U-phase coil 7 is inserted into the slot 5 of the stator core 4 as shown by the fifth line. As shown in the figure, 1; U of the slots 5 into which the v-phase coil 8 is inserted;
Inside the two slots 51 and 5b close to the slot 5 into which the phase coil 7 was inserted ≦;, the two threads of the interrelated insulating paper IO 3.
3a'1 is inserted into slots 5a and 5b, and the core legs 13a between the slots are loosely clamped and locked to form 0. In addition, one thread 3 of 10 m of other correlating insulating paper is stored in Sc, and the thread 3 of that one thread 3 @ loquat k # 11 is stored in Sc. The end leakage 11c is redistributed to the outside of the wooden end 11 (l) for the interlayer insulating paper that accommodates the two threads 3a described above, and the other thread 3 for the interlayer insulating paper described above is placed on the outside. The terminal of the Confucian loquat k M 11 is disposed outside of the other terminals.The above-mentioned operation is repeated once to house the V-phase coil 8 and the W-phase coil 9, and perform insulation between different phases.

[% light effect]

The power of the F14yk of the pair of insulating papers is connected by two threads with a gap between them, and the other is tied with one thread. The interval between the two threads arranged in one row is made wider than the width of the tooth tip of the stator core, and the core # & 11 parts between the slots in contact with B are loosely locked in a hook-like manner to prevent them from coming out, and correlative insulation is achieved. Lay the end of another insulating paper thread on the outside of the wooden end of the two paper threads. The conventional drawbacks such as the correlative insulating paper slipping out and the correlative insulating paper slipping are improved, and the positioning film protects the misalignment of the correlative insulating paper.
l- It has the effect of saving the trouble of making corrections. Since there is no need to worry about making protrusions of insulating paper, which were conventionally installed, this has the effect of improving the company's trade.

[Brief explanation of drawings]

Figure 11m1 is the flat view of the conventional correlation insulating paper. Figure 2 is the ll'1 side view of the correlation solid iron core. Figure 3 is the configuration diagram of the Ashiko coil end winding. Figure @4 is the main view. Top view of the invention correlation insulating paper, #! Reference numeral 5- is a block diagram of the rigid coil end loop according to the present invention, and reference numeral 6- is an enlarged view of the supplementary part of FIG. 3... Thread 3a... Two threads 4...
Stator core 5...Slot 5a+sb, 5
c...Respectively adjacent slots 7...U-phase coil 7a...U-phase: l (coil end 8...V-phase coil 9...W-phase coils 10, 10a...correlation Insulating paper 11... Insulating paper 11a... Notch
llb... chamfer 11c, 114-terminal 12
, 15-...Interval 13...Teeth 14-
・Middle box 2 diagram

Claims (1)

[Claims] (1) Insert a U-shaped insulator into the slot of the Ig1 converter to house the coil, connect both ends of a pair of correlated insulating papers with threads such as polyester, and create correlated insulation between the nested coils at both coil ends. In the case where one of the ends of a pair of insulating papers is connected with two threads, the interval between the two threads is made narrower than the width of the tooth tip of the stator core, and the other end is connected with one thread. The other ends are connected with one thread, and the end of the insulating paper of that one thread is placed 1 unit outside the end of the two interrelated insulating papers on the prefecture side of the other interrelated insulating paper. 0