JPS5893457A - Coil inserting device - Google Patents

Abstract

PURPOSE:To consequently shorten a coil by reducing the thickness of a blade which is disposed inside the coil having the shortest pitch thinner than the other blade, thereby shortening the coil end of the minimum pitch coil. CONSTITUTION:The blade 1' which is disposed with other coil inside coils C<1>, C<2>, C<3> formed of a plurality of blades 1 and forming one pole disposed annularly is constructed as follows: This blade 1' is reduce in thickness t' for introducing the coil end of the coil C<1> or C<2> toward the axial center thinner than that t of the other blade. It is elongated along the bore 4 of an armature core 2 inside the coil C<1> or C<3>, and is integrated in the constant thickness. In this manner, the coil can be consequently entirely shortened.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a coil insertion device for inserting a pre-wound coil having a predetermined shape into a slot provided in an armature core.

This type of device comprises a large number of blades.

Each blade is axially disposed and arranged in a generally annular configuration. The diameter of this ring is approximately the same as the inner diameter of the armature core through which the slot opens, so that the armature core can be force-fitted into this ring with its inner diameter. The gap formed by adjacent blades of each of the grades arranged in an annular manner is configured to be equal to the opening width of the slot, and in some cases, h smaller than this. The pre-wound Q coil of a predetermined shape is held in a predetermined position by this gap. On the other hand, the plate ring is provided with a coil II collar movably guided in the axial direction. Then, the hook clamps a pre-wound coil of a predetermined shape at a predetermined position on the blade ring, presses the armature core into the ring, and moves the coil stripper in the axial direction.
The coil is inserted into the armature flk core (D x a ) by the action of this coil IJ collar.

! 1 and 2 show an example of a conventional coil insertion device, and the drawings will be explained below. 1 is a blade, and each blade 1 is arranged in the axial direction, and one end thereof is fixed to a base h (not shown). Each of the blades 1 is arranged so as to form an annular shape as a whole. 2 is an armature core, and 3 is a slot opening in the inner diameter 4 of the armature core 2. The outer diameter of the ring constituted by a large number of blades 1 is approximately equal to the inner diameter 4 of the armature core 2 so that the armature core 2 can be press-fitted into this ring by its inner diameter 4. The child iron culms 2 are arranged so that each corresponds to the teeth 5 between the slots 3:' in the fitted state. A gap 6 formed between adjacent grades 1 on the sides of the blade 1 is arranged to face the opening 7 of the slot 5. Here, the gap 6 is the same as the width of the opening 7 of the slot 3, or is configured to be smaller than this.

A coil stripper 8 is guided so as to be movable in the axial direction along the blade 1 inside the ring formed by the blade 1. This coil stripper 8 has a blade 1 on its circumferential side.
A plurality of grooves 9 are provided which fit into the grooves. After forming the groove 9, the protrusion 10 formed on the circumferential surface is formed by the slot 5.
so that it penetrates somewhat into the slot 5 through the opening 7 of.

The coil stripper 8 is indicated by h (not shown).
The movement in the axial direction is achieved by a driving means such as a press machine. 1
Reference numeral 1 denotes a rod that mechanically connects the coil stripper 8 and an unillustrated drive means.

Coil 01. which is pre-wound into a predetermined shape. (The coil side C8 that enters the slot s of 32, 05 is pushed from the free end side of the blade 1 into the gap 6 between the blades 1 facing the slot 3 where the coil side C8 enters. , C2, and O5 are clamped by the blade 1.

Here, coil 01. C, and coil C, each form one pole. In this state, the armature core 1 is pressed and fitted onto the free end side of the blade 1. In this state, the armature core 2 is fixed by a fixing means (not shown). Next, the coil stripper 8 is moved axially toward the free end of the blade 1 as indicated by arrow a by means of a drive means (not shown). Then, due to the action of the coil stripper 8, each coil 1. c2. The as-o24 side aS is pushed into the slot 3 through the opening 7 of the slot 3, and is further inserted deeper into the slot by the action of the protrusion 1o provided on the circumferential surface of the coil IJ collar 8.

Figure 'No.' shows the state in the middle of this insertion process.

Furthermore, when the coil stripper 8 continues to move in the same direction, each coil 01, 02, 03 is removed from the armature core 2 by a coil end CE that catches the coils C1, C2, O5 and holds them in place. ) From the free end of vl, the coils 01', 02, 03 are completely inserted into the slot 3 of the armature core 2.

7N:% In this type of coil insertion device, the coil (IJ collar) is movable in the axial direction of this ring inside the ring formed by a large number of grade 1s fixed to the base as described above. In addition to the so-called fixed blade method, a large number of blades 1 are attached to the coil stripper 8 instead of the base.
When the coin stripper 8 and the blade 1 are fixed to each other, the coin stripper 8 and the blade 1 operate as one.

The so-called movable blade method, and the blade 1 fixed to the base and the blade 1 fixed to the coil stripper 8
There is a so-called mixed method in which a mixture of

The present invention relates to such a coil insertion device, and an object of the present invention is to obtain a coil insertion device that can shorten the coil end of a coil inserted into a slot of an armature core.

As described above, the coils C1, C2, and C3 are sandwiched in the cold gap 6 formed between the adjacent blades 1, and the coil a
t, c2. Coil/I101 for those in which the CG is inserted into the slot 3 provided in the armature core 2 by the coil stripper 8.

02.03, the blade 1 is required to have considerable strength. So, especially blade 1
′, the width 1W of the blade 1 is determined by the width of the carp 1ve1. C2, Ox
Since it is necessary to form a slanted gap to guide the coils C1, 02, and 03 into the slot 2 while holding the coils, the width is limited to about 60 teeth.
In order to increase the strength of the blade 1 due to this limitation, conventionally, the thickness 1t of the ring formed by a large number of blades 1 in the axial direction is increased to obtain a predetermined strength as the blade 1. . However, this thickness of blade 1
Increasing the thickness of t corresponds to that.

Coil C1,'02. Since C3 is guided in the axial direction, the coil must be made larger accordingly, that is, the coil 01. C! 2. (The part marked !3 ends up being the coil end that comes out of the armature core 2. In short, the fill end OE becomes longer.
' Among the plurality of fills placed in the ring Vca3 formed by the plurality of blades, the coil C! 1. C! 2(7), some are arranged concentrically to form one pole. Next carp A/CI arranged concentrically.

CM) of which no other coil is arranged inside - the coil end CF2 of the coil, i.e. the coil end CI of the coil C1, has the thickness ζ1t of the blade 1 in the same way as the coil end CE of the coil C3 forming one pole. Although constructed with consideration, the length of the coil end CE of the coil C2, which is located concentrically outside the coil C1, is rather influenced by the length of the coil end CI of the coil C1. That is, the coil ends OE of the coils C1, C2, and C3 that are not inserted into the slots 5 of the armature core 2 are then formed by a coil forming machine. In this molding, the coil end 0Edf of the coil C2 having a larger coil width φ is positioned above the coil end OK of the coil C1. Therefore, the same J.
Among the plurality of coils 01 and 02 arranged υ, the fill end OE of the coil C2, which has a larger b coil pitch than the coil C1 with the smallest coil pitch, is located above the =il end OE of the coil 1vC1. The length must be configured in advance so that it can be used.

Furthermore, a coil having a much larger coil pitch than this coil A/Cj2 must be made long in advance so that it can be positioned above the coil end of this coil C2.

That is, the coils CI, C! are arranged concentrically and form one pole. 2, the coil end length of the coil C1 having the minimum coil pitch ≠, which is arranged at the innermost side, is configured to be long considering the thickness 1t of the blade 1, and the coil C2 having a larger coil pitch than this coil C1. The = end length of the coil C2 is determined by the coil end length of the coil C1 located one position inside the coil C2. This means that the coil C with the minimum coil pitch
If the coil end CE of Coil 1 becomes longer, this means that the coil ends of the other coils V arranged concentrically also become longer. Conversely, this means that if the coil end length of the coil with the minimum pitch can be shortened, the entire coil can be shortened.

As mentioned above, the reason why the coil end of a coil with no other coil placed inside is lengthened is because the blade 1
It depends on the thickness of 1t. Therefore, if this thickness 1t is made thinner, this coil end can be shortened. However, in this case, the mechanical strength of the blade 1 is insufficient and it is impossible to realize it as a field device.

The present invention was made by analyzing the above study results in detail, and its first feature is that among the coils ν forming one pole, no other coils are arranged inside the coil V. The thickness of the blade that guides the coil end toward one core is made thinner than the other blades. As a result, the coil end of the minimum bitna coil can be shortened, and as a result, the coil V can be shortened as a whole. The second feature is that this thinly constructed blade has a grinding length of 4'C inside the minimum pi y + coil. This shall be sharpened within an area that does not obstruct the shortest path of the coil end of the minimum pitch coil V across the ring of the blade. The feature of this j12 is that among the coils inserted at once into the slots of the armature core, there are not only other coils inside the minimum pitch coil of the coils arranged concentrically, but also the coil v side of the other coils. This is based on the recognition of the fact that it will not be placed. This feature of 11X2 makes it possible to provide sufficient mechanical strength to the thinly constructed blade.

FIG. 5 is a cutaway plan view showing an embodiment of the present invention, in which coils at, cz, and C5 forming one pole, which are not arranged in a ring formed by a plurality of blades 1, are arranged inside the coils at, cz, and C5. The other coil V is arranged and the blade Ln located inside the coils 01 and 03 is configured as follows.

That is, this blade 1' has a thickness 1t' where the coil end of the coil C1 or coil C5 is carefully guided, which is thinner than the thickness 1t of the other blades 1. The sail of the carp A101 extends along the inner diameter 4 of the armature core 2 inside the carp AlO3, has a constant thickness, and is integral. Of course, even if the thickness is constant, the side end portion of the blade 1' that contacts the coil C1 and hFi03 is appropriately shaved off so as not to damage the coils C1 and CFh. The part of the carp V stripper 80 corresponding to the blade 1' has a groove 9 into which the blade 1 fits.
′ is provided.

In this way, since the thickness of the plate li1' becomes thinner, the amount guided toward the axes of the coils C1 and CS is reduced accordingly, and the coil end is correspondingly smaller than the conventional one. Shorten the length of CK. This length means that the length of the coil end CE of the coil tv02, which is arranged concentrically with the coil C1, can be shortened, and as a result, the length of the coil inserted into the slot 3 of the armature core 2 can be shortened. . This means that it is possible to reduce the amount of wire that constitutes the coil, and as a result, the coil can be constructed at a lower cost. Furthermore, since the amount of coil ends protruding outward from the armature core 2 can be reduced, it is possible to downsize equipment that uses armature cores incorporating coils. In addition, even though such effects are obtained, the strength of the blade 1' is not insufficient due to the action of the extended portion of the blade 1', and furthermore, the thickness of the blade 1' is...

As the blade 1' becomes thinner and smoother, the contact area between the blade 1' and the coils 01 and 03 decreases, reducing the coil insertion resistance and improving the ease of coil insertion.

In the embodiment shown in Figure 5, each blade 1.1'
This is a case in which there is no particular need for engagement between the armature core 2 and the armature core 2, but Figure 4 is a diagram that takes this into consideration. That is, the end of the blade 1.1' is provided with a groove 177m12 which engages with the side wall of the slot opening 7.

Since the lip ridge 12 is pressed by the coil when inserting the carp V, wear and tear on this part greatly affects the quality of the carp V. In this case, as shown in Figure 5, the blade 1'
Coil C1 is located on the inside of C5.
A projection 15 is provided which engages the slot opening 7 of the slot S. Of course, in this case, the lip portion 12 is not provided on the side of grade 1', and this function is performed by the protrusion 16.

In this way, when inserting the coil, it is possible to engage the blade 1' and the armature core 2 at one position without directly contacting the coil, so that at least the blade 1' is inserted into the armature core 2. can eliminate the drawbacks of

Figure 6 shows another embodiment of the present invention, in which the shape of the blade 1' is defined by the coil C1Tob being the plane along the shortest path of the coil end CE that crosses the ring of the blade C3. , and the circumferential surface of the ring of the blade. The end portion where the blade 1'o coil A/C1 and the blade C3 are guided toward the axis is made thinner than the other blades 1. In this way, it becomes possible to further improve the strength of the blade 1'.

In the above embodiments, the case where the blade 1' is all integrated is shown, but it may be divided into parts as long as the strength is satisfied, but the blade is better if it is integrated. This will be advantageous when processing the grooves 9 and 9' in which the coil stripper 81C and coil stripper 81C are provided.

In addition, in the embodiment, the blade 1'boden iron core 2
When the armature core 2 is fitted into the ring of the blade, the outward facing surface of the blade 1' contacts the inner diameter 4 of the armature core 2 on its entire surface. Although this is shown in detail, it is sufficient that only some of the surfaces come into contact with each other to enable positioning.

In other words, it would be fine if it looked like Atsushi Figure 7 and Figure 1.

In particular, the blade 1' is fixed to the coil stripper 8.

When the blade 1' slides on the inner diameter 4 of the armature core 2 by the coil stripper 8, if the blade 1' is configured as shown in Figure 7 and Figure 98, the distance between the blade 1' and the armature core 2 is The contact area with the inner diameter 4 is reduced, and friction is accordingly reduced, allowing smooth insertion of the coil.

Furthermore, 5j! In the examples, particularly in Figures 6, 1 and 7, the plane of coil C1 or coil C3 along the shortest path of the coil end CE across the ring of the blade is a straight line. This is a case in which the coil C1 may bulge out in a curved manner toward the axis by %b, taking into account the compatibility with the coil end CE of the coil C5. , the shortest path includes paths of this magnitude.

As is clear from the above description, the present invention has a structure in which the thickness of the blade that guides the coil end of the inner coil end of the sail coil toward the axis is thinner than that of the other blades. is an extension of one coil without another fill placed inside the coil, thereby obtaining a coil insertion device capable of shortening the coil end of the coil inserted into the slot of the armature core. .

[Brief explanation of the drawing]

Fig. 1 is a cutaway front view showing an example of a conventional device, Fig. 2 is a cutaway plan view of the same, Fig. 5 is a cutaway plan view showing an embodiment of the present invention, Figs. 4, 5, and 6. , Fig. 7, and Fig. 8 are main part cutaway plan views showing other embodiments of the present invention. 1.1'! Braid %2: Armature core, 3 Nislots,
01,02. (33t coil, 8: coil striper,
Protrude 10. Law 1 diagram, Z diagram side 4 Wa bone 6 diagram

Claims (1)

[Claims] A device comprising a plurality of blades disposed in the t-axis direction and having a substantially annular shape as a whole, and a hook holding a coil wound in a predetermined shape between adjacent blades. Among the coils forming the pole, the blade located inside the coil V having the smallest pitch has a thickness thinner than other blades in guiding the coil end in the axial direction, and the blade formed by the blade is thinner than the other blades. 1. A coil insertion device characterized by having a cross-sectional shape surrounded by the shortest crossing path of a blade ring and an outer diameter of the blade ring and having a predetermined mechanical strength within the intended area. 2. The coil V insertion device according to claim 1, wherein among the coils forming one pole, the blade located inside the coil having the smallest pitch b is integrated. The blades located inside the coils having the smallest pitch among the coils forming one pole have a groove extending along the surface of the ring of the blades. The coil insertion device according to item 1 or item 2. 4. Among the coils forming one pole, the blade located inside the coil with the smallest Ln pitch is composed of a plane along the shortest transverse path and a plane of the ring of the blade, and has a length of about three months. The coil insertion device according to claim 1, characterized in that the coil insertion device has a shape. 5. Among the coils forming one pole, the blade located inside the coil with the smallest b pitch is characterized in that a part of the side facing outward constitutes the aspect of the ring of the blade. A coil insertion device according to claim 1. 6. Among the coils forming one pole, the blade located inside the coil having the smallest h pitch is inserted into the opening of the slot located inside the minimum pitch to position the blade. Claim 1, 2 or 3, characterized in that the invention comprises a protrusion.
5. The coil insertion device according to item 4 or 5.