JP2801697B2 - Coil winding device for flat motor - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a flat motor coil winding device for forming a coil element used in a flat motor.

[Conventional technology]

Conventionally, in order to form a coil element used for a flat motor, for example, a coil winding device for a flat motor as disclosed in Japanese Patent Application Laid-Open No. 56-15952 is used.

FIG. 7 shows a coil element formed by the coil winding device for a flat motor disclosed in this publication, and this coil element is formed by winding a coil wire e in a plurality of times on the same plane. It is formed in a flat shape.

8 and 9 show a coil winding device for a flat motor disclosed in this publication. The coil winding device for a flat motor draws out a coil wire e wound around a bobbin 18 and outputs a trumpet. Through the inside of 19, repeated winding in a pile on the same plane, for example, 25
This is for molding the coil elements E.

That is, this flat motor coil winding device is:
A trumpet guide 21 and a coil press guide 22 are provided on the base 20, and the trumpet 19 and the coil press 24 slide along the guides 21 and 22, but the two form a pair. Since they need to move, they are connected to each other by a link 25.

A mold assembly 26 is provided between the two guides 21 and 22 to support the bearing 2.
It is rotatably supported by 7.

This mold assembly 26 is formed by connecting 25 mold pieces 28 to each other and having a shaft 29 inserted through the center. A handle 30 is attached to one end of the shaft 29 so as to rotate.

In each of the mold pieces 28, as shown in FIG. 10, a through hole 32 through which the shaft 29 is inserted is formed in the center of the disk 31.

The through hole 32 has a substantially trapezoidal shape as a whole in the same manner as the longitudinal cross-sectional shape of the shaft 29, but projects from a peripheral wall thereof.
A projection 35 is provided, and a spacer 35 is fixed to an end surface of the projection 33 with a screw.

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, when the shaft 29 is inserted into the mold piece 28, the outer end surface 35a of the spacer 35, together with the outer peripheral surface of the shaft 29, serves to form a part of the trapezoid that is the shape of the coil element E. It is.

In the coil winding device for a flat motor configured as described above, first, all 25 mold pieces 28 are inserted into the shaft 29 and fixed using an appropriate fastener.

Thereafter, when the winding around each mold piece 28 is completed, the shaft 29
At the same time, the mold assembly 26 is taken out and heated. By this heating, the epoxy resin on the outer peripheral surface of the coil wire e is melted and, when it cools, the windings are temporarily bonded to each other.

After this temporary bonding, the fastening tool is removed, the shaft 29 is pulled out, and the entire body is shaken with the coil wires 13 at both ends, so that only the mold piece 28 in which the spacer 35 has contacted the inner periphery 15, the torque generating section 16, etc. After dropping, as shown in FIG. 10, 25 coil elements E connected by connection lines e can be easily formed.

[Problems to be solved by the invention]

However, in such a conventional flat-motor coil winding device, when the coil wire e is moved from the mold piece 28 to the mold piece 28 to wind the coil wire e, as shown in FIG. It is very difficult to reliably position the line e at the winding start point 37 and the winding end point 39, and the winding start point 37
In addition, at the winding end point 39, there is a problem that it is difficult to securely temporarily bond the coil wire e.

On the other hand, recently, as shown in FIG. 12, a loop R is formed in order to secure a length of a connecting portion of a coil wire e connecting the coil elements E to each other. It is conceived that the commutator and the coil wire e are connected directly to the projection formed on the non-commutator to be connected.

However, in the conventional coil winding device for a flat motor, in order to form such a loop R with a margin, it is necessary to increase the outer diameter of the jig. There was a problem that it became difficult.

The present invention has been made to solve such a conventional problem, and can reliably position a coil wire at a winding start point and a winding end point without increasing the diameter of a winding jig. An object of the present invention is to provide a coil winding device for a flat motor, which can ensure a sufficient length of a connecting portion for connecting a coil element to a coil element.

[Means for solving the problem]

The coil winding device for a flat motor according to the present invention is a flat motor coil winding device for forming a flat coil element in which a coil wire is wound plural times in the same plane in a stack form by a single coil wire. In the coil winding device,
A shaft is inserted through the center of a plurality of flat winding jigs arranged on the same axis to support these winding jigs, and the coil wire is stacked on one side of the winding jig a plurality of times. A projection for winding into a shape is formed, and a notch for positioning the front side is formed on the outer peripheral portion on one side of the winding jig, and a notch for positioning the rear side is formed on the outer peripheral portion on the other side. The corners of the notch for use and the corners of the notch for positioning on the back side are formed so as to be separated by a predetermined distance.

(Operation)

In the coil winding device for a flat motor of the present invention, at the time of starting winding of the coil wire to the first projecting portion of the winding jig, the coil wire is positioned at the corner of the front side positioning notch of the winding jig. The coil wire extends toward the outer periphery of the protrusion, and the coil wire is wound around the protrusion.

When the winding of the coil wire around the projecting portion of the winding jig is completed, the coil wire wound around the outer periphery of the projecting portion extends toward the corner of the back side positioning notch of the adjacent winding jig. After that, it is guided to a front side positioning notch formed at a predetermined distance from the winding jig, and a coil wire is positioned at a corner of the front side positioning notch, and the coil wire is positioned on the outer periphery of the protruding portion. , And the coil wire is wound around the protrusion.

Accordingly, the length of the connection portion of the coil wire connecting the coil elements to each other increases by a distance corresponding to the distance between the corner of the back side positioning notch and the corner of the front side positioning notch.

〔Example〕

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

1 and 2 show details of the winding jig of FIG. 3, and FIG. 3 shows a main part of an embodiment of a coil winding device for a flat motor according to the present invention.

In FIG. 3, reference numeral 41 denotes a plurality of flat winding jigs arranged on the same axis.
, A shaft 44 is inserted.

That is, in the center of each winding jig 41, FIG.
As shown in the figure, a through hole 47 having a key groove 45 is formed.

On the other hand, a keyway 49 formed in the shaft 44 has a key 51
The shaft 44 is inserted through the through hole 47, and the key 51 is fitted into the key groove 45, so that each winding jig is fixed.
41 is supported so as to rotate with the rotation of the shaft 44.

On one side of the winding jig main body 53 of the winding jig 41, a protruding portion 55 for winding the coil wire e in a plurality of stacks is formed.

The protruding portion 55 has a substantially trapezoidal shape including a top side 57, a bottom side 59, and side sides 61, and has a shape in which each corner is connected by an arc.

In addition, the protruding portion 55 has a tapered surface such that the tip is tapered.
It is 63.

A notch 65 for positioning the front side and a notch 66 for positioning the rear side are formed in the outer peripheral portion of the winding jig body 53.

That is, as shown in FIG. 2, a concave groove 68 is formed on a part of the outer periphery of the winding jig main body 53, and projecting walls 70 and 72 are formed on both sides of the concave groove 68. I have.

A notch 65 for positioning the front side is formed on the protruding wall 70 located on the protruding portion 55 side, while the protruding wall 72 on the opposite side is formed.
Is formed with a back side positioning notch 66.

As shown in FIG. 1, the front positioning notch 65 and the rear positioning notch 66 are formed so as to face both sides of the center line when viewed from the front. Corner 67 of back side positioning notch 66 is formed at a predetermined distance.

Here, as shown in FIG. 4, the corner 67 of the front-side positioning notch 65 is positioned such that the side 61 on the winding start side of the coil wire e has an upper side.
When it is extended to the 57 side, it is formed on a straight line 71 inclined to the upper side 57 by a predetermined angle α from this extended line 69.

When the side 73 of the coil wire e at the end of the winding is extended to the upper side 57 side, the position of the corner 74 of the back side positioning notch 66 is shifted toward the upper side 57 by a predetermined angle β from this extended line 75. It is formed on an inclined straight line 77.

In this embodiment, as shown in FIG. 1, a straight line 71 shown in FIG. 4 is provided on the side surface of the winding jig body 53 located between the corner 67 of the front side positioning notch 65 and the projecting portion 55. A guide groove 79 for guiding the coil wire e from the corner portion 67 to the protruding portion 55 is formed along.

FIG. 5 shows the winding jig 41 as viewed from the back side of FIG.

In the coil winding device for a flat motor configured as described above, at the start of winding the coil wire e around the projection 55 of the first winding jig 41, as shown in FIG. The coil wire e is positioned at the corner 67 of the front side positioning notch 65, and the coil wire e extends toward the outer periphery of the protruding portion 55 along the guide groove 79.

Then, the winding jig 41 is rotated by the rotation of the shaft 44, and the coil wire e is wound around the protruding portion 55 a plurality of times on the same plane in a stacked state, thereby forming a flat coil element E.

When the winding of the coil wire e around the projecting portion 55 of the winding jig 41 is completed, the coil wire e wound around the outer periphery of the projecting portion 55 is
As shown in FIG. 6, after extending toward the corner 74 of the back side positioning notch 66 of the adjacent winding jig 41, the winding jig 41
Front side positioning notch 65 formed at a predetermined distance from
The coil wire e is positioned at the corner 67 of the front side positioning notch 65, and the coil wire e extends toward the outer periphery of the protrusion 55, and the coil wire e is wound around the protrusion 55. Is done.

Therefore, the length of the connection portion of the coil wire e connecting the coil element to the coil element by a distance corresponding to the distance between the corner 74 of the back side positioning notch 66 and the corner 67 of the front side positioning notch 65 Increase.

Thus, in the coil winding device for a flat motor 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 are used. Along with supporting the shaft 41 on the shaft 44, a projecting portion 55 for winding the coil wire e in a stacking manner a plurality of times on one side of the winding jig 41 is formed. Since the front side positioning notch 65 is formed in the outer peripheral portion and the rear side positioning notch 66 is formed in the outer peripheral portion on the other side, the coil wire e can be reliably positioned at the winding start point and the winding end point. And a sufficient length of the connecting portion for connecting the coil elements with each other without increasing the diameter of the winding jig.

That is, when the winding of the coil wire e around the projecting portion 55 of the winding jig 41 is started, the coil wire e is positioned at the corner 67 of the front side positioning notch 65, and this coil wire e is placed on the outer periphery of the projecting portion 55. On the other hand, at the end of the winding, the coil wire e wound around the outer periphery of the projecting portion 55 extends toward the corner 74 of the back side positioning notch 66 of the adjacent winding jig 41. The winding start point 81 and the winding end point 83
Can be reliably positioned.

Further, in the coil winding device for a flat motor configured as described above, since the corner 67 of the front-side positioning notch 65 and the corner 74 of the rear-side positioning notch 66 are formed with a predetermined distance therebetween, The length of the connection portion of the coil wire e connecting the coil element to the coil element is increased by a distance corresponding to the distance between the corner 74 of the back side positioning notch 66 and the corner 67 of the front side positioning notch 65. Therefore, it is possible to sufficiently secure the length of the connecting portion for connecting the coil elements without increasing the diameter of the winding jig.

In the flat motor coil winding device 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 protruding portion 55, so that the coil wire e can be more reliably wound around the starting point 81.
Can be located at

Furthermore, in the coil winding device for a flat motor configured as described above, the corners 67, 74 of the positioning notches 65, 66 are provided.
Is set as shown in FIG. 4, it is possible to reliably obtain a predetermined coil element E shape, and it is possible to improve the temporary bonding strength of the outermost coil wire e. Become.

That is, in the state shown in FIG. 4, when the side 61 on the winding start side of the coil wire e is extended to the upper side 57 side, along a straight line 71 inclined to the upper side 57 side by a predetermined angle α from this extended line 69. As a result, the coil wire e is guided, so that a predetermined coil element E shape can be reliably obtained.

In the state shown in FIG. 4, when the side 73 of the coil wire e at the end of the winding is extended toward the upper side 57, the extension 75
Since the coil wire e is guided along the straight line 77 inclined to the upper side 57 side from the predetermined angle β, the outermost coil wire e is securely joined to the inner coil wire e, and the temporary adhesive strength is reduced. It is possible to improve.

Further, in the coil winding device for a flat motor configured as described above, since the tapered surface 63 is formed on the projection 55, the coil wire e wound around the projection 55 can be easily removed from the projection 55. It becomes possible to remove it.

In the embodiment described above, an example in which the coil j is wound by rotating the winding jig 41 has been described. However, the present invention is not limited to such an embodiment. May be fixed and the coil wire may be wound by a fryer.

〔The invention's effect〕

As described above, in the coil winding device for a flat motor of the present invention, the shaft is inserted through the center of a plurality of flat winding jigs arranged on the same axis, and these winding jigs are supported. Along with one side of the winding jig, a projecting portion is formed for winding the coil wire a plurality of times in a stacked state, and further,
A notch for positioning the front side on the outer peripheral part on one side of the winding jig, a notch for positioning the rear side on the outer peripheral part on the other side, a corner of the notch for positioning the front side and a corner of the notch for positioning the rear side. However, since the coil wire is formed so as to be separated by a predetermined distance, the coil wire can be reliably positioned at the winding start point and the winding end point, and the coil element and the coil element can be connected without increasing the diameter of the winding jig. There is an advantage that a sufficient length of the connecting portion for connecting can be secured.

[Brief description of the drawings]

FIG. 1 is a front view showing details of the winding jig of FIG. FIG. 2 is a side view of FIG. FIG. 3 is a side view showing a main part of an embodiment of the coil winding device for a flat motor according to the present invention. FIG. 4 is an explanatory diagram showing the positions of the corners of the positioning notch formed in the winding jig of FIG. FIG. 5 is a view of the winding jig of FIG. 1 as viewed from the back side. FIG. 6 is an explanatory view showing a state in which a coil wire is wound around the winding jig of FIG. FIG. 7 is a front view showing the coil element. FIG. 8 is a top view showing a conventional coil winding device for a flat motor. FIG. 9 is a side view of FIG. FIG. 10 is a perspective view showing the mold piece of FIG. FIG. 11 is an explanatory view showing a flat motor coil formed by the flat motor coil winding device of FIG. FIG. 12 is an explanatory view showing a flat motor coil having a loop. [Description of Signs of Main Parts] 41… Winding jig 44… Shaft 55… Protrusion 65… Front side positioning notch 66… Back side positioning notch 67, 74… Corner 79… Guide groove.

Continuation of the front page (72) Inventor Kazutaka Saino 5-24-15 Minamidai, Nakano-ku, Tokyo Inside Calsonic Co., Ltd. (56) References JP-A-56-159952 (JP, A) JP-A-55-5044 (JP, a) JP Akira 56-12845 (JP, a) JitsuHiraku Akira 56-129173 (JP, U) JitsuHiraku Akira 59-189468 (JP, U) (58 ) investigated the field (Int.Cl. ⁶ , DB name) H02K 15/04

Claims (1)

(57) [Claims] 1. A flat motor coil winding apparatus for continuously forming a flat coil element by winding a plurality of coil wires on the same plane in a stacking manner with a single coil wire. A shaft is inserted through the center of a plurality of flat winding jigs arranged on the wire, and these winding jigs are supported, and the coil wire is stacked a plurality of times on one side of the winding jig. Forming a protruding portion for winding, further, a front side positioning notch in the outer peripheral portion on one side of the winding jig, a back side positioning notch in the outer peripheral portion on the other side,
A coil winding device for a flat motor, wherein a corner of a front-side positioning notch and a corner of a rear-side positioning notch are formed to be separated by a predetermined distance.