JPH04248352A - Coil element for flat motor and winding jig for coil winding equipment for flat motor - Google Patents

Abstract

PURPOSE:To enhance the dimensional accuracy for each part of the coil element of a flat motor. CONSTITUTION:Two side portions 92 are separated into two parts, the inner side portion 92A and outer side portion 92B in the longitudinal direction, and the wall thickness of one of them is made almost equal to the wall thickness of a coil line entry portion 91 or an upper side portion 93, and wall thickness of the other is made equal to the wall thickness of the upper side portion 93 or coil line entry portion 91. Moreover, two side forming portions of the winding surface is divided into two of an inner side part forming portion and an outer side part forming portion in the longitudinal direction; the wall thickness of one of them is almost the same as that of the coil line entry part forming portion or upper side part forming portion; and the thickness of the other is equal to that of the upper side part forming portion or the coil line entry part forming portion.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coil element used in a flat motor and a winding jig for a coil winding device for a flat motor for forming the coil element.

0002

[Prior Art] Conventionally, in order to form a coil element used in a flat motor, for example,
A coil winding device for a flat motor as disclosed in Japanese Patent No. 159952 is used. FIG. 11 shows a coil element formed by the coil winding device for a flat motor disclosed in this publication. It is formed into a flat shape.

FIGS. 12 and 13 show a coil winding device for a flat motor disclosed in this publication. This coil winding device for a flat motor draws out a coil wire e wound around a bobbin 18, For example, 25 coil elements E are formed by passing the coil through the trumpet 19 and repeatedly winding it in a stacked manner within the same plane.

That is, this coil winding device for a flat motor includes a trumpet guide stand 21 on a base 20,
It has a coil presser guide stand 22, and both guide stands 21, 2
The trumpet 19 and the coil presser 24 slide along the trumpet 2, but since they need to move in pairs, they are connected to each other by a link 25. Further, between the guide stands 21 and 22, a mold assembly 26 is rotatably supported by a bearing 27.

This mold assembly 26 is made up of 25 mold pieces 28 interconnected and a shaft 29 inserted through the center.
A handle 30 is attached to one end of the shaft 29 for rotation. As shown in FIG.
2 have been established.

The through hole 32 has a substantially trapezoidal shape as a whole, similar to the vertical cross-sectional shape of the shaft 29, but a projection 33 protrudes from its peripheral wall, and the end surface of the projection 33 has a A spacer 35 is fixed with screws. This spacer 35 is for forming a gap between the mold pieces 28 that is slightly wider than the diameter of the coil wire e.

Therefore, the outer end surface 3 of this spacer 35
5a, when the shaft 29 is inserted into the mold piece 28, the outer peripheral surface of the shaft 29 as well as the coil element E
It serves to form part of the trapezoid shape. In the coil winding device for a flat motor configured as described above, first, all 25 mold pieces 28 are fitted onto the shaft 29 and fixed using an appropriate fastener.

Thereafter, when the winding around each mold piece 28 is completed, the mold assembly 26 together with the shaft 29 is taken out and heated. This heating melts the epoxy resin on the outer peripheral surface of the coil wire e, and when it cools down, the windings are temporarily bonded to each other. After this temporary adhesion, remove the tightening tool, pull out the shaft 29, hold the coil wire 13 at both ends and shake the whole thing.
Only the mold pieces 28 that were in contact with the mold pieces 28 fall, and as shown in FIG. 15, 25 coil elements E connected by connecting wires e can be easily made.

However, in such a conventional flat motor coil winding device, when moving the coil wire e from mold piece 28 to mold piece 28 and winding the coil wire e, as shown in FIG.
1, it is very difficult to reliably position the coil wire e at the winding start point 37 and the winding end point 39, and at the winding start point 37 and the winding end point 39,
There was a problem in that it was difficult to reliably temporarily bond the coil wire e.

On the other hand, in recent years, as shown in FIG. , it has been considered to directly engage a protrusion formed on a commutator (not shown) to connect the commutator and the coil wire e. However, in conventional coil winding devices for flat motors, in order to form such a loop R with a margin, it is necessary to increase the outside diameter of the jig, which makes the winding jig large in diameter and difficult to handle. The problem was that it became difficult.

[0011] Therefore, in order to solve this conventional problem, the inventor of the present invention has developed a method in which a flat coil element, in which a coil wire is wound multiple times in a stacked manner on the same plane, is continuously connected to a single coil wire. In a flat motor coil winding device for forming coils, a shaft is inserted through the center of a plurality of flat winding jigs arranged on the same axis, and while supporting these winding jigs, the winding jigs are forming a protrusion on one side of the tool for winding the coil wire multiple times in a stacked manner;
Furthermore, a front side positioning notch is provided on the outer periphery of one side of the winding jig, a back side positioning notch is provided on the outer periphery of the other side, and a corner of the front side positioning notch and a back side positioning notch are formed on the outer periphery of the other side of the winding jig. A coil winding device for a flat motor in which the corners are formed so as to be spaced apart by a predetermined distance (Japanese Patent Application No. 1-295642)
No.) was filed.

[0012] This flat motor coil winding device is
This will be explained based on FIGS. 17 to 22. 17 and 18 show details of the winding jig in FIG.
1 shows a main part of one embodiment of this coil winding device for a flat motor. In FIG. 17, reference numeral 41 indicates a plurality of flat winding jigs arranged on the same axis,
A shaft 44 is inserted through the center of these winding jigs 41.

That is, at the center of each winding jig 41, there is a
7 and FIG. 18, a through hole 47 having a keyway 45 is formed. On the other hand, a key 51 is fixed to a key groove 49 formed in the shaft 44, and by inserting this shaft 44 into the through hole 47 and fitting the key 51 into the key groove 45, each winding jig 41 is shaft 4
It is supported to rotate with the rotation of 4.

On one side of the winding jig main body 53 of the winding jig 41,
Projection portion 55 for winding the coil wire e multiple times in a stacked manner
is formed. The protruding portion 55 has a substantially trapezoidal shape consisting of a top side 57, a bottom side 59, and a side side 61, and each corner is connected by a circular arc. In addition, the protrusion 55
has a tapered surface 63 with a tapered end.

The winding jig main body 53 has a front side positioning notch 65 and a back side positioning notch 6 on the outer periphery.
6 is formed. That is, as shown in FIG. 18, a groove 68 is formed in a part of the outer periphery of the winding jig main body 53, and protruding walls 70, 72 are formed on both sides of this groove 68. .

The protruding wall 7 located on the protruding portion 55 side
0, a front side positioning notch 65 is formed, and on the other hand,
A back side positioning notch 66 is formed in the protruding wall 72 on the opposite side. As shown in FIG. 17, the front side positioning notch 65 and the back side positioning notch 66 are formed to face each other on both sides of the center line when viewed from the front. The corner 67 and the corner 74 of the back side positioning notch 66 are formed a predetermined distance apart.

Here, as shown in FIG. 20, the corner 67 of the front side positioning notch 65 is formed by extending the extension line 6 when the side 61 on the winding start side of the coil wire e is extended toward the upper side 57.
9 is formed on a straight line 71 inclined toward the upper side 57 by a predetermined angle α. Furthermore, the position of the corner 74 of the back side positioning notch 66 is such that when the side 73 of the coil wire e is extended toward the upper side 57 at the end of winding, it is located at a predetermined angle β from this extension line 75 toward the upper side 57. It is formed on an inclined straight line 77.

Furthermore, in this embodiment, as shown in FIG.
A guide groove 79 for guiding the coil wire e from the corner 67 to the protrusion 55 is formed along the straight line 71 shown in FIG. 20 on the side surface of the winding jig main body 53 located between. Note that FIG. 21 shows the winding jig 41 viewed from the back side of FIG. 17.

In the coil winding device for a flat motor configured as described above, when winding of the coil wire e around the protruding portion 55 of the first winding jig 41 is started, the winding jig is closed as shown in FIG. A coil wire e is positioned at the corner 67 of the front side positioning notch 65 of the tool 41, and this coil wire e extends toward the outer periphery of the protrusion 55 along the guide groove 79. and,
The winding jig 41 is rotated by the rotation of the shaft 44, and the coil wire e is wound around the protrusion 55 multiple times in a stacked manner on the same plane, thereby forming a flat coil element E.

When the winding of the coil wire e around the protruding part 55 of the winding jig 41 is completed, the coil wire e wound around the outer periphery of the protruding part 55 is wrapped around the adjacent winding jig as shown in FIG. After extending toward the corner 74 of the back side positioning notch 66 of the tool 41, it is guided to the front side positioning notch 65 formed on this winding jig 41 at a predetermined distance apart, and this front side positioning notch A coil wire e is positioned at a corner 67 of the portion 65, and extends toward the outer periphery of the protrusion 55, so that the coil wire e is wound around the protrusion 55.

Therefore, the distance between the corner 74 of the back side positioning notch 66 and the corner 67 of the front side positioning notch 65 is the same as that of the connecting portion of the coil wire e that connects the coil elements. Increase in length. In the flat motor coil winding device configured as described above, the shaft 43 is inserted through the center of a plurality of flat winding jigs 41 arranged on the same axis, and these winding jigs 41 is supported on the shaft 43, and the winding jig 4
A protrusion 55 for winding the coil wire e in a stacked manner a plurality of times is formed on one side of the winding jig 41, and a notch 65 for positioning the front side is formed on the outer periphery of one side of the winding jig 41. , since the back side positioning notch 66 was formed on the outer periphery of the other side,
The coil wire e can be reliably positioned at the winding start point and winding end point, and the length of the connection part connecting the coil elements can be made sufficiently long without increasing the diameter of the winding jig. can be secured.

That is, when starting to wind the coil wire e around the protrusion 55 of the winding jig 41, the front side positioning notch 65
A coil wire e is positioned at a corner 67 of the projection 55, and this coil wire e extends toward the outer periphery of the protrusion 55. On the other hand, when winding is completed, the coil wire e wound around the outer periphery of the protrusion 55 is , the corner 7 of the back side positioning notch 66 of the adjacent winding jig 41
4, the coil wire e can be reliably positioned at the winding start point 81 and the winding end point 83.

Further, in the flat motor coil winding device configured as described above, the front side positioning notch 65
The corner 67 of and the corner 74 of the back side positioning notch 66,
Since they are formed at a predetermined distance apart, the corner 74 of the back side positioning notch 66 and the corner 67 of the front side positioning notch 65
Since the length of the connection part of the coil wire e that connects the coil elements increases by the distance corresponding to the distance between the coil elements, the coil elements can be connected without increasing the diameter of the winding jig. It becomes possible to ensure a sufficient length of the connecting portion.

Furthermore, in the coil winding device for a flat motor configured as described above, since the guide groove 79 is formed, the coil wire e extends along the guide groove 79 toward the outer periphery of the protrusion 55. Therefore, it becomes possible to position the coil wire e at the winding start point 81 more reliably. Furthermore, in the flat motor coil winding device configured as described above, the corner portions 6 of the positioning notches 65 and 66
Since the positions of 7 and 74 are set as shown in FIG. 17, the predetermined shape of the coil element E can be reliably obtained, and the temporary adhesion strength of the outermost coil wire e can be improved. It becomes possible.

That is, in the state shown in FIG. 20, when the side 61 on the winding start side of the coil wire e is extended toward the upper side 57, a straight line 71 is inclined at a predetermined angle α toward the upper side 57 from this extension line 69. Since the coil wire e is guided along the , a predetermined shape of the coil element E can be reliably obtained. In addition, in the state shown in FIG. 20, when the side edge 73 of the coil wire e at the end of winding is extended toward the upper edge 57, a straight line 7 inclined at a predetermined angle β toward the upper edge 57 from this extension line 75.
Since the coil wire e is guided along the line 7, the outermost coil wire e is reliably joined to the inner coil wire e, making it possible to improve the temporary bonding strength.

Furthermore, in the coil winding device for a flat motor configured as described above, since the tapered surface 63 is formed on the protrusion 55, the coil wire e wound around the protrusion 55 is 55 can be easily removed.

[0027]

[Problems to be Solved by the Invention] However, in the coil element E formed in this way, as shown in FIGS. If we take a cross section of the two side parts B and the upper side part A that is continuous with the two side parts B, in each cross section, the thickness is a1>bl>c1, and the width is a2<b2<c2. There is.

[0028]Therefore, there are four changes in thickness per revolution. Therefore, there is a problem that winding disorder is likely to occur and the width dimension of the coil element E is not stable. As a result, there is a possibility that defects such as wire breakage and short circuits may occur when the armature is assembled. The present invention was made to solve such problems, and its purpose is to provide a coil element for a flat motor and a coil winding device for a flat motor, which make it possible to improve the dimensional accuracy of each part of the coil element. The purpose of this invention is to provide a winding jig.

[0029]

[Means for Solving the Problems] A coil element for a flat motor according to the present invention has a coil wire entry/exit portion, two side portions continuous to the coil wire entry/exit portion, and an upper side portion continuous to the two side portions. In a flat motor coil element that is continuously formed from a single coil wire and has an approximately trapezoidal cross section, the two sides are divided into an inner part and an outer part in the longitudinal direction, and one of the two sides is divided into an inner part and an outer part. The thickness is made almost equal to the thickness of the coil wire entry/exit portion or the upper side portion, and the thickness of the other side is made equal to the wall thickness of the upper side portion or the coil wire entry/exit portion.

A jig for a coil winding device for a flat motor according to the present invention has a coil wire attached to one side of a plurality of flat winding jig bodies arranged on the same axis with a shaft inserted through the center. In addition to providing a protruding portion formed for winding in a stacked manner multiple times, a coil wire entry/exit portion forming portion that is continuous with the entry portion and the entry portion of the coil wire, and a coil wire entry/exit portion forming portion that is continuous with the coil wire entry/exit portion forming portion. A winding surface having two side forming parts and an upper side forming part continuous with the two side forming parts is provided, and a coil wire is wound on the winding surface of each winding jig main body. In a winding jig for a coil winding device for a flat motor that continuously forms a substantially trapezoidal coil element with a single coil wire, the two side forming portions of the winding surface are formed into an inner portion forming portion in the longitudinal direction. and an outer part forming part, the thickness of one of them is approximately equal to the thickness of the coil wire entry/exit part forming part or the upper side forming part, and the thickness of the other part is the thickness of the upper part forming part or the coil wire entry/exit part forming part. The thickness is made equal to the thickness of the part forming part.

[0031]

[Function] The flat motor coil element according to the present invention can make the width of the overlapping portion of adjacent flat motor coil elements uniform during amateur assembly. In the winding jig for the coil winding device for a flat motor according to the present invention, the thickness of the inner portion or the outer portion of the two side portion forming portions is equal to the wall thickness of the upper side portion forming portion, and Since the thickness of the outer part or the inner part of the forming part and the thickness of the coil wire entry/exit part forming part are made equal, it is possible to make the thickness change twice per rotation during winding. It can prevent winding disorder.

[0032]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be explained below based on the drawings. 1 to 4 show an embodiment of a coil element for a flat motor according to the present invention, and 90 indicates a coil element. This coil element 90 has a coil wire entry/exit portion 91, two side portions 92 continuous to this, and an upper side portion 93 continuous to these two side portions 92, and is continuously connected by a single coil wire e. It is formed flat and has an almost trapezoidal cross section.

The two side portions 92 are divided into an inner portion 92A and an outer portion 92B in the longitudinal direction, and the wall thickness B1 of the inner portion 92A is approximately equal to the wall thickness A1 of the upper side portion 93, and the outer portion 92B The wall thickness B3 is the coil wire entry/exit part 9
1. The thickness C1 is configured to be equal to the thickness C1 of 1. When amateur assembly is performed using the coil element 90 configured in this way, the inner portion 92A and outer portion 92B of adjacent coil elements 90 will be superimposed in an overlapping state, as shown in FIG. , it becomes possible to form a shape with uniform wall thickness as shown in FIG.

Therefore, as shown in FIG. 7, it is possible to reduce the distance L between each coil element 90, and it is possible to increase the electromagnetic density in the flat motor. Next, the winding jig 41 for forming the coil element 90 will be explained using FIGS. 8 to 10. Note that this embodiment uses devices and members having the same shapes as those of the conventional example shown in FIGS. 14 to 23, so the same parts are given the same reference numerals and the explanation thereof will be omitted.

The winding jig 41 has a shaft 44 inserted through its center and winds the coil wire e in a stacked manner a plurality of times on one side of a plurality of flat winding jig bodies 53 arranged on the same axis. A protrusion 55 formed for turning the coil wire e is provided, and an intrusion part forming part 9 for the coil wire e is provided in a portion connected to the protrusion 55.
4 and an infiltration part forming part 95, two side part forming parts 96 continuous to this coil wire inlet/outlet forming part 99, and two side part forming parts 96 continuous with these two side part forming parts 96. A winding surface 98 forming an upper side forming portion 97 is provided. Note that the intrusion portion forming portion 94 is provided with a guide groove 79 for the coil wire e, similar to FIGS. 17 and 18.

Corresponding to FIGS. 2 to 4, as shown in FIG. Part 96
The coil wire entrance/exit portion forming portion 9 is made almost equal to the wall thickness E of A.
The wall thickness G of 9 is approximately equal to the wall thickness F of the outer portion forming portions 96B of the two side portion forming portions 96. The inner part forming part 96A and the outer part forming part 96 of the two side part forming parts 96
B is formed by approximately bisecting the two side forming portions 96 in the longitudinal direction.

Therefore, this winding jig 41 is assembled to the shaft 44 as shown in FIG. 10, and the coil wire e is assembled as shown in FIG.
When the coil wire e is wound to form the coil element E, the coil wire e is wound with a thickness equivalent to that of the upper side forming portion 97 during a period corresponding to the width of the inner portion forming portion 96A of the two side forming portions 96. Therefore, when the coil wire e is wound around the outer portion forming portions 96B of the two side portion forming portions 96, the wall thickness is equal to that of the coil wire entry/exit portion forming portion 99. It will be wrapped in

As a result, the coil element 90 shown in FIGS. 2 to 4 can be obtained. In this embodiment, since the thickness at the time of winding is made different only at two parts, the thickness changes by two per rotation, and winding irregularities are reduced. That is, according to this embodiment, swelling in the width direction can be prevented, and the density of the coil wire e in each part can be increased.

In the above embodiment, the case where the wall thickness B1 of the inner portions 92A of the two side portions 92 is thicker than the wall thickness B3 of the outer portion is explained. The wall thickness B1 may be thinner than the wall thickness B3 of the outer portion. Further, in the above embodiment, the wall thickness D of the upper side forming portion 97 of the winding surface 98 is made approximately equal to the wall thickness E of the inner portion forming portion 96A of the two side forming portions 96, and the coil wire entry/exit portion is formed. The wall thickness G of the portion 99 is the same as that of the two side forming portions 96.
Although the case has been described in which the thickness D of the upper side part forming part 97 of the winding surface 56 is approximately equal to the wall thickness F of the outer part forming part 96B of the two side part forming parts 96, 96B, and the thickness G of the coil wire entry/exit portion forming portion 99 may be made substantially equal to the wall thickness E of the inner portion forming portions 96A of the two side portion forming portions 96.

[0040]

Effects of the Invention The coil element for a flat motor according to the present invention has a coil wire inlet/outlet portion, two side portions continuous to the coil wire inlet/outlet portion, and an upper side portion continuous to the two side portions. In a flat motor coil element that is continuously formed from a wire and has an approximately trapezoidal cross section, the two side parts are divided into two parts in the longitudinal direction, an inner part and an outer part, and the thickness of one of the parts is determined by the thickness of the coil wire. The wall thickness of the entrance/exit part or the top side is made almost equal, and the thickness of the other side is made equal to the thickness of the top side or the coil wire entrance/exit part, so there is no possibility of wire breakage, short circuits, etc. during amateur assembly. Not only can defects be reduced, but also the balance during amateur assembly is improved.

The winding jig of the coil winding device for a flat motor according to the present invention has a plurality of flat winding jig bodies arranged on the same axis with the shaft inserted through the center, and the coil wires are attached to one side of the main body of the flat motor. In addition to providing a protruding part formed for winding the coil wire in a stacked manner multiple times, a coil wire entry/exit part forming part that is continuous with the intrusion part and the intrusion part of the coil wire, and a coil wire entry/exit part forming part continuous with this coil wire entry/exit part forming part are provided. A flat coil wire is provided with a winding surface having two side forming parts and an upper side forming part continuous with the two side forming parts, and a coil wire is wound on the winding surface of each winding jig main body. In a winding jig for a coil winding device for a flat motor that continuously forms a coil element having a substantially trapezoidal cross section using a single coil wire, the two side forming portions of the winding surface are formed as inner portions in the longitudinal direction. The wall thickness of one half is made almost equal to that of the coil wire entry/exit part forming part or the upper side part forming part, and the thickness of the other part is made equal to the wall thickness of the upper side forming part or the coil wire forming part. Since the coil is configured to have a wall thickness equal to that of the inlet/outlet portion forming portion, irregular winding is reduced and dimensional accuracy of each portion of the coil is improved. Since the wire tension during winding can be reduced, the elongation rate of the wire can be reduced.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing an embodiment of a coil element for a flat motor according to the present invention.

FIG. 2 is a cross-sectional view taken along line AA in FIG. 1;

FIG. 3 is a sectional view taken along line BB in FIG. 1;

FIG. 4 is a sectional view taken along line CC in FIG. 1.

FIG. 5 is an explanatory diagram showing a state before the flat motor coil element of FIG. 1 is assembled.

FIG. 6 is an explanatory diagram showing a state in which the flat motor coil element of FIG. 1 is assembled.

7 is a plan view showing an armature formed by assembling the flat motor coil element of FIG. 1. FIG.

FIG. 8 is a plan view showing an embodiment of a winding jig for a coil winding device for a flat motor according to the present invention.

FIG. 9 is a side view of FIG. 8;

10 is a side view showing a state in which the winding jig of the flat motor coil winding device of FIG. 8 is assembled; FIG.

FIG. 11 is a front view showing a conventional coil element.

FIG. 12 is a top view showing a conventional coil winding device for a flat motor.

FIG. 13 is a side view of FIG. 12;

FIG. 14 is a perspective view showing the mold piece of FIG. 12;

15 is an explanatory diagram showing a flat motor coil formed by the flat motor coil winding device of FIG. 14. FIG.

FIG. 16 is an explanatory diagram showing a flat motor coil having a loop.

FIG. 17 is a front view of a winding jig of a coil winding device for a flat motor according to a prior application.

18 is a side view of the winding jig of the flat motor coil winding device shown in FIG. 17. FIG.

19 is a side view of a coil winding device for a flat motor using the winding jig of the coil winding device for a flat motor shown in FIG. 17. FIG.

20 is an explanatory diagram showing the positions of corners of positioning notches formed in the winding jig of the flat motor coil winding device of FIG. 17; FIG.

21 is a view of the winding jig of the flat motor coil winding device shown in FIG. 17, seen from the back side; FIG.

22 is an explanatory diagram showing a state in which a coil wire is wound in the flat motor coil winding device of FIG. 19; FIG.

23 is a plan view showing a coil element for a flat motor manufactured according to FIG. 22. FIG.

24 is a sectional view taken along line AA in FIG. 23. FIG.

25 is a sectional view taken along line BB in FIG. 23. FIG.

26 is a sectional view taken along line CC in FIG. 23. FIG.

[Explanation of symbols]

41 Winding jig 44 Shaft 53 Winding jig body 55 Protruding part 65 Front side positioning notch 66 Back side positioning notch 67, 74 Corner 79 Guide groove 90 Coil element 91　Coil wire entry/exit section 92 Side part 92A Inner part 92B outer part 93 Upper side 96 Side forming part 96A Inner forming part 96B Outer forming part 97 Top side forming part 98 Winding surface 99 Coil wire entry/exit part forming part

Claims (2)

[Claims] Claim 1: A single coil wire having a coil wire entrance/exit part (91), two side parts (92) continuous to this, and an upper part (93) continuous to these two side parts (92). In a flat motor coil element continuously formed of coil wire (e) and having a flat and approximately trapezoidal cross section,
The two side parts (92) are connected to the inner part (92) in the longitudinal direction.
A) and an outer portion (92B), one of which has a thickness approximately equal to that of the coil wire entry/exit portion (91) or the upper side (93), and the other side has a thickness approximately equal to that of the upper side (92B). 93)
Alternatively, a coil element for a flat motor, characterized in that the coil element is configured to have a wall thickness equal to that of the coil wire entry/exit portion (91). 2. A plurality of flat winding jig bodies (53) arranged on the same axis with a shaft (44) inserted through the center.
) is provided with a protrusion (55) formed for winding the coil wire (e) multiple times in a stacked manner, and is continuous with the intrusion portion and the extrusion portion of the coil wire (e). Coil wire entry/exit portion forming portion (99);
) is provided with a winding surface (98) having two side forming portions (96) that are continuous with each other and an upper side forming portion (97) that is continuous with these two side forming portions (96). Ingredient body (53)
A coil winding wire for a flat motor, in which a flat coil element (E) having a substantially trapezoidal cross section is continuously formed by winding a coil wire (e) on a winding surface (98) of a single coil wire (e). In the winding jig of the device, 2 of the winding surface (98)
The two side portion forming portions (96) are divided into two in the longitudinal direction into an inner portion forming portion (96A) and an outer portion forming portion (96B), and the thickness of one side is the same as that of the coil wire entry/exit portion forming portion (99) or the upper side. The wall thickness of the section forming section (97) is approximately equal to that of the upper side section forming section (97) or the coil wire entrance/exit section forming section (99). A winding jig for a flat motor coil winding device featuring: