JP4745991B2 - Armature insulation sheet and armature - Google Patents

Description

  The present invention relates to an armature such as a rotary electric machine or a linear motor, and more particularly to a structure of an insulator and an insulating sheet that insulates between a magnetic tooth and a drive coil.

Conventional armatures have a coil bobbin structure that can easily and inexpensively obtain induction grooves that match windings of different diameters, and a corner portion that has induction grooves for winding induction is provided in the missing portion provided in the corner of the bobbin body. The winding is aligned and wound by fixing. When winding windings with different diameters, it is possible to replace the above corner with a corner with a guide groove of a size suitable for the winding diameter without replacing the bobbin body. (For example, see Patent Document 1).
In the conventional armature, in order to insulate the laminated core and the coil, insulating end plates are attached to both ends of the laminated core, and insulating sheets are attached to the slot portions on both sides of the laminated core. Furthermore, the insulation sheet is bent after coil winding to cover the winding body, thereby ensuring insulation between adjacent winding bodies and between the coil end portion of the winding body and the charged portion (for example, Patent Documents) 2).

JP 2000-331818 (paragraph numbers [0003], [0004], FIG. 3 and the like) JP 2003-61286 A (paragraph numbers [0005], [0009], FIG. 1 etc.)

  In the conventional armature, in the bobbin around which the coil is wound, the bobbin main body and the corner part are configured as separate parts. Therefore, the number of parts of the bobbin is increased, and in order to provide the guide groove in the corner part, it corresponds to that. It is necessary to manufacture the mold for molding and to provide the guide groove by machining in the corner portion without the guide groove. Moreover, the work which fixes the corner part manufactured as mentioned above to the defect | deletion part of a bobbin main body is also required, and there existed a problem that a manufacturing process was complicated and led to the increase in labor and cost.

  The present invention has been made to solve the above-described problems, and is provided with an insulating sheet capable of aligning and winding a drive coil by providing a guide groove corresponding to a drive coil having a different diameter in a simple and inexpensive manner. It aims at obtaining the armature which has this insulating sheet.

  The armature according to the present invention is an armature including a magnetic pole tooth and a drive coil wound around the magnetic pole tooth. The drive coils are mounted on both end surfaces of the magnetic pole teeth on the coil end side to electrically insulate between the drive coils and the magnetic pole teeth, and mounted on both side surfaces of the magnetic teeth on the drive direction side. The magnetic sheet is wound around an insulating sheet that electrically insulates the teeth, and the insulating sheet has guide grooves for aligning and winding the drive coils.

  In addition, the insulating sheet of the present invention is an insulating sheet that is attached to both side surfaces of the magnetic teeth in the driving direction and electrically insulates between the driving coil wound around the magnetic teeth and the magnetic teeth. The insulating sheet has guide grooves for aligning and winding the drive coils.

  According to the present invention, since the guide groove for guiding and winding the drive coil in the insulating sheet is provided, the insulating sheet not only provides electrical insulation between the magnetic teeth and the drive coil, but also aligns the drive coil. And has the effect of being able to be wound. Therefore, when changing the shape of the insulator itself, which is difficult to mold compared to the insulating sheet, or simply changing the shape of the insulating sheet without increasing the number of parts, simply and cheaply winding a drive coil of a different diameter It can correspond to.

Embodiment 1 FIG.
FIG. 1 shows the structure of an armature of a one-sided linear motor according to Embodiment 1 of the present invention, FIG. 1 (a) is a plan view, and FIG. 1 (b) is a side cross section taken along the line I-I of the plan view. FIG. In FIG. 1, an armature 1 includes a plurality of magnetic pole teeth 2 that are sequentially arranged along the driving direction of a linear motor (the direction of a double-headed arrow in the figure), and an insulator 3 and an insulating sheet 4 on the magnetic pole teeth 2. And a drive coil 5 wound therethrough. In addition, in the top view of FIG. 1, description of the coil end part of the drive coil 5 is abbreviate | omitted so that a structure can be understood easily.

2 is an enlarged view of a part of the armature 1 shown in FIG. 1, FIG. 2 (a) is an exploded perspective view, and FIG. 2 (b) is an assembled perspective view. The insulation configuration of the teeth 2 will be described. In FIG. 2, the drive coil 5 is omitted.
As shown in FIG. 2 (a), the magnetic pole teeth 2 are composed of a yoke portion 20 that abuts adjacent magnetic pole teeth and a tooth portion 21 that protrudes from the yoke portion 20. Although not shown, the magnetic pole teeth 2 are formed by punching electromagnetic steel plates with a press, laminating the punched steel plates, and connecting the steel plates together by punching.

  A pair of insulators 3 are attached from both ends in the stacking direction of the magnetic teeth 2 so as to cover both ends of the teeth 21 of the magnetic teeth 2 on the coil end side, and from both ends in the driving direction of the magnetic teeth 2 The insulating sheet 4 is attached so as to cover the side surface of the tooth portion 21 in the driving direction. Then, the drive coil 5 is wound around the tooth portion 21 of the magnetic pole tooth 2 via the insulator 3 and the insulating sheet 4 to electrically insulate the magnetic pole tooth 2 and the drive coil 5 from each other. In addition, said coil end has pointed out the part to which the drive coil 5 wound by the magnetic pole tooth 2 is exposed outside from the both end surfaces of the magnetic pole tooth 2 in the lamination direction.

  The insulator 3 is, for example, a resin molded product, and is provided on both sides of the drive coil winding portion 30 and the drive coil winding portion 30 that is formed in a U-shaped cross section and surrounds the coil end side end surface of the tooth portion 21. It consists of a flange portion 31 extending perpendicular to the turning surface, and the corner portions 32 at both ends in the driving direction of the drive coil winding portion 30 are chamfered.

  The insulating sheet 4 is made of, for example, a flexible and flexible resin film that can be bent, and includes a first covering portion 40 that covers the driving direction side surface of the tooth portion 21 of the magnetic pole tooth 2, and a first covering portion that covers both side portions thereof. A second covering portion 41, and a third covering portion 42 that performs electrical insulation between adjacent drive coils 5 by covering the drive coil 5 by being bent after the winding of the drive coil 5 and protruding from the magnetic pole teeth 2 have. The first covering portion 40 has a plurality of guide holes 400 for forming guide grooves, which will be described later, at positions that overlap the corner portions 32 of the insulator 3 when the insulating sheet 4 is mounted on the magnetic pole teeth 2 together with the insulator 3. is doing. In FIG. 2, the two insulating sheets 4 that cover both sides of the magnetic teeth 2 in the driving direction have the same shape, and an insulating sheet having the same shape as the insulating sheet on one side is inverted and used on the other side. .

  As shown in FIG. 2B, the insulating sheet 4 is attached to the magnetic pole teeth 2 together with the insulator 3 by sandwiching both ends of the second covering portion 41 in the coil end direction in the insulator 3, and in this case, the first covering Both ends of the portion 40 in the coil end direction are disposed outside the insulator 3. Then, by bending the first covering portion 40 at the position where the guide hole 400 is disposed, the guide hole 400 guides the drive coil 5 to the position of the corner portion 32 of the insulator 3 to guide and wind the guide coil 400a. Form.

  As described above, according to the first embodiment, the insulating sheet 4 is provided with the guide groove 400a for guiding and driving the drive coil 5 in an aligned manner, so that the insulating sheet 4 includes the magnetic pole teeth 2 and the drive coil 5. In addition to the electrical insulation, the drive coil 5 can be aligned and wound. Therefore, the diameter of the insulator 3 itself, which is difficult to mold as compared with the insulating sheet 4, can be easily changed without changing the shape and the number of parts, and the size and interval of the guide holes 400 of the insulating sheet 4 can be changed. This can correspond to the case where the drive coil 5 is wound.

Next, an armature according to another example of the first embodiment of the present invention will be described below. FIG. 3 is a perspective view showing the structure of an insulator 3 in another example of the first embodiment, and FIG. 4 is a perspective view showing the armature 1 of this example with the insulator 3 attached thereto. In FIG. 4, the drive coil is omitted.
In the above-described first embodiment, as shown in FIG. 2B, both ends of the first covering portion 40 of the insulating sheet 4 in the coil end direction are mounted so as to come out of the insulator 3, but this embodiment In another example of FIG. 4, as shown in FIG. 4, both ends of the first covering portion 40 in the coil end direction are bent at predetermined positions to form guide grooves 400, and the insulator 3 is formed in the same manner as the second covering portion 41. It is mounted so as to be sandwiched inside. And as shown in FIG. 3, the corner | angular part 32 of the insulator 3 with which the armature 1 is mounted | worn is not chamfered but the hole was given, and it was inserted | pinched inside from the corner | angular part 32 to which this hole was given. The drive coil 5 is aligned and wound so that the guide groove 400a of the insulating sheet 4 is exposed.
With such a configuration, the first covering portion 40 and the second covering portion 41 of the insulating sheet 4 are both sandwiched by the insulator 3 while using the guide hole 400 of the insulating sheet 4 as the guide groove 400a, so that the magnetic pole teeth Therefore, the insulating sheet 4 can be more firmly fixed to the magnetic pole teeth 2.

  In the above-described example, as shown in FIGS. 2 and 4, the insulating sheet 4 has the guide hole 400 in the first covering portion 40, and the drive coil 5 is positioned so as to overlap the corner portion 32 of the insulator 3 by bending the insulating hole 4. However, the shape and position of the guide groove are not limited to this, and one example is given as another example of the first embodiment. It is shown below.

FIG. 5 is a plan view showing the shape of an insulating sheet 4 in another example of the first embodiment, and FIG. 6 is a partial perspective view of the armature 1 of this example with the insulating sheet 4 attached. In FIG. 6, the drive coil is omitted.
In another example of the first embodiment, as shown in FIG. 5, the first covering portion 40 of the insulating sheet 4 has a height that is the same as that of the coil end side end surface of the winding portion 30 of the insulator 3 when the first covering portion 40 is attached to the magnetic teeth 2. Are formed so as to be the same, and notches 401 for forming guide grooves to be described later are provided at both ends of the first covering portion 40 in the coil end direction. As shown in FIG. 6, the insulating sheet 4 is attached to the magnetic teeth 2 together with the insulator 3 by sandwiching both ends of the second covering portion 41 in the coil end direction with the insulator 3. At that time, both ends in the coil end direction of the first covering portion 40 are arranged outside the insulator 3, so that the notch portion 401 is arranged at a position overlapping the corner portion 32 where the chamfering of the insulator 3 is performed, thereby driving. A guide groove 401a for guiding and winding the coil 5 is formed.
Thus, if the guide groove 401a is formed by providing the notch portion 401 in the insulating sheet 4, the same effect as in the first embodiment can be obtained.

  In addition, as shown in FIG. 7, a guide groove 402 a extending in the coil end direction may be formed by bending the entire first covering portion 40 of the insulating sheet 4 into a bowl shape, and as shown in FIG. 8. As described above, a recess extending in the coil end direction may be provided on the entire first covering portion 40 of the insulating sheet 4 and this may be used as the guide groove 403a. 7 is a plan view and a cross-sectional view of the insulating sheet 4 in which the entire first covering portion 40 is bent to form the guide groove 402a, and FIG. 8 is an insulating sheet 4 in which the recess extending in the coil end direction is the guide groove 403a. FIG.

  Note that the mounting of the insulating sheet 4 to the magnetic pole teeth 2 is not limited to fixing the insulating sheet 4 by being sandwiched by the insulator 3 as in the examples of FIGS. 2, 4, and 6. For example, as shown in FIG. 9, the entire insulating sheet 4 is arranged outside the insulator 3, and these are welded at a predetermined location (welded portion 6) where the insulator 3 and the second covering portion 41 of the insulating sheet 4 overlap. The insulating sheet 4 may be attached to the magnetic pole teeth 2 by a fixing method.

  In the example of FIGS. 2 and 6 of the first embodiment, the corner portion 32 of the insulator 3 is chamfered. For example, the chamfer may be a circular arc having a smooth radius R. If it is made into a shape, it has an effect of preventing damage due to contact with the corner portion 32 of the insulator 3 when the drive coil 5 is wound around the magnetic pole teeth 2.

  In the first embodiment, the armature of the one-sided linear motor has been described. However, the present invention is not limited to this. For example, as shown in FIG. The same effect can be obtained even when applied to an armature of a rotating electric machine, and the armature structure is not limited to that shown in the figure. 10 is a plan view showing an armature when the armature of the first embodiment is applied to a double-sided linear motor, and a side sectional view taken along line II-II of the plan view. FIG. FIG. 4 is a plan view showing an armature when the armature of form 1 is applied to a rotating electric machine in which the armature functions as a stator, and a side sectional view taken along line III-III of the plan view. Although not shown, of course, the present invention can also be applied to a rotating electrical machine that functions as a rotor in which the armature is configured integrally with a rotating shaft. 10 and 11, the same reference numerals are given to the same parts as those in the first embodiment, and the description of the coil end part of the drive coil 5 is omitted for easy understanding of the configuration.

Embodiment 2. FIG.
Next, the armature according to the second embodiment will be described below.
FIG. 12 is a plan view showing the shape of the insulating sheet 4 according to the second embodiment, and FIG. 13 is a perspective view of the armature 1 according to the second embodiment with the insulating sheet 4 attached, omitting the drive coil. It is described. Note that portions similar to those in the first embodiment are denoted by the same reference numerals and description thereof is omitted.
In Embodiment 1 described above, there is only one type of guide hole 400 provided in the first covering portion of the insulating sheet attached to the armature. However, in Embodiment 2, one insulating sheet is used. Two types of guide holes are provided on 4.
As shown in FIG. 12, the first covering portion 40 of the insulating sheet 4 attached to the armature 1 of the second embodiment is such that the insulating sheet 4 is attached to the magnetic pole teeth 2 together with the insulator 3. A guide hole 404 is provided on one side of the position overlapping the chamfered corner 32, and a guide hole 405 having a size and interval different from those of the guide hole 404 is provided on the other side. Then, by bending them, the guide hole 404 has a guide groove 404a corresponding to the first drive coil 50 (not shown), and the guide hole 405 has a second wire diameter different from that of the first drive coil 50. A guide groove 405a corresponding to the drive coil 51 (not shown) is formed.

For example, when the first drive coil 50 is wound, as shown in FIG. 13, the upper end side (the guide hole 404 side) of the first covering portion 40 in the coil end direction is disposed outside the insulator 3. It is mounted so that the lower end side (guide hole 405 side) of the first covering portion 40 in the coil end direction is housed inside the insulator 3. Then, only the guide groove 404a formed by the guide hole 404 is exposed to the outside, whereby the first drive coil 50 is guided to the guide groove 404a and aligned and wound.
Although not shown, when the second drive coil 51 having a wire diameter different from that of the first drive coil 50 is wound, the upper end side in the coil end direction of the first covering portion 40 (the guide hole 404 side). Is mounted so as to be housed inside the insulator 3, and the second drive coil is mounted by mounting the lower end side (guide hole 405 side) of the first covering portion 40 in the coil end direction so as to be disposed outside the insulator 3. 51 is guided and guided into a guide groove 405a formed by a guide hole 405.

  The insulating sheet 4 is bent along a folding line indicated by a dotted line in FIG. 12 and attached to the magnetic teeth 2. By changing the bending direction, a desired guide groove is arranged at a desired corner 32. Can do. For example, when the position of the guide groove 404a shown in FIG. 13 is to be arranged at the corner on the lower end side in the coil end direction, the folding direction of the insulating sheet 4 may be changed from valley folding to mountain folding and reversed.

Next, the arrangement position of the guide groove will be described below.
FIG. 13 shows the mounting state of the insulator 3 and the insulating sheet 4 when the first drive coil 50 is wound in the second embodiment, for example, as described above. FIG. 14 is a plan view seen from the upper side in the coil end direction of FIG. 13 and shows a process of winding the first drive coil 50 around the armature 1. As shown in FIG. 14, in the second embodiment, the first drive coil 50 is wound from the winding start portion 50 a on the left side of the tip of the tooth portion 21 of the magnetic teeth 2, and the upper end surface of the winding portion 30 in the coil end direction. Is wound at an angle so as to move to the next layer. When wound in this way, in the layer transfer start portion 50b, which is a portion where the first drive coil 50 begins to become oblique, the first drive coil 50 is in the direction toward the yoke portion 20 side of the magnetic teeth 2 (in the drawing). Since a force in the direction of the arrow is applied, the first drive coil 50 is likely to be disturbed. On the other hand, in the layer transfer end 50c of the first drive coil 50 positioned on the winding start portion 50a side, the force in the direction of the yoke portion 20 of the magnetic pole teeth 2 as described above is not applied, so the first drive The coil 50 is hardly disturbed.
Therefore, in the second embodiment, the guide groove 404a is located at the position of the above-mentioned layer shift start portion 50b in order to efficiently prevent the winding disturbance of the layer shift start portion 50b and to wind the first drive coil 50 in an aligned manner. Is arranged.
The guide groove 404a formed by the guide hole 404 of the insulating sheet 4 on the other side may be arranged at any of the upper and lower corners, but in the second embodiment, on the diagonal line of the position of the layer transfer start portion 50b. Provided at a corner (not shown).
Note that the winding method of the drive coil is not limited to this example, and it may be wound from any position, and the position of the guide groove may be set in accordance with the winding of the drive coil.

As described above, according to the second embodiment, since the two kinds of guide holes 404 and 405 are provided in the insulating sheet 4, in addition to the effect described in the first embodiment, the mounting method of the insulating sheet 4 is changed. Only by doing this, two types of drive coils 50 and 51 having different wire diameters can be aligned and wound by one type of insulating sheet 4, and productivity can be improved.
Moreover, it has the effect that the guide groove corresponding to a drive coil can be arrange | positioned in a desired position by changing the bending direction of the insulating sheet 4. FIG.
Further, by arranging the guide groove at least at the position of the layer transfer start portion 50b, it is possible to efficiently prevent the winding disturbance of the drive coil and perform the aligned winding.

  Of course, the armature in the second embodiment can be applied not only to a single-sided linear motor but also to a double-sided linear motor or an armature of a rotating electric machine, and the same effect can be obtained. The armature structure is not limited to that shown in the figure.

Embodiment 3 FIG.
Next, the armature according to the third embodiment will be described below.
FIG. 15 is a plan view showing the shape of the insulating sheet 4 in the third embodiment, FIG. 16 is a partial perspective view showing an example of mounting the insulating sheet 4, and the magnetic pole teeth 2 and the drive coil 5 are omitted. ing. Note that portions similar to those in the first embodiment are denoted by the same reference numerals and description thereof is omitted.
In the above-described second embodiment, two types of drive coils having different wire diameters can be aligned and wound by providing two types of guide holes on one insulating sheet. In the third embodiment, three types of guide holes are provided in the insulating sheet so as to correspond to three types of drive coils having different wire diameters.
As shown in FIG. 15, the first covering portion 40 of the insulating sheet 4 attached to the armature 1 of the third embodiment extends longer in the coil end direction than the second covering portion 41 and the third covering portion 42. The shape of the guide hole 406 is different from the position where the insulating sheet 4 is overlapped with the corner 32 where the insulator 3 is chamfered when the insulating sheet 4 is attached to the magnetic pole tooth 2 in the direction toward the end portion. The guide holes 407 and 408 are provided. By bending these, the guide holes 406, 407, 408 form guide grooves 406a, 407a, 408a for aligning and winding drive coils having different wire diameters.
For example, when a drive coil having a wire diameter corresponding to the guide hole 407 is used, as shown in FIG. 16, the first covering portion 40 mounted so as to be arranged outside the insulator 3 has a shape above the guide hole 407. And a guide groove 407a is provided on the coil end side end surface of the winding portion 30 of the insulator 3. As shown in FIG. The drive coil is aligned and wound by being guided by the guide groove 407a. Although not shown, guide grooves arranged at other corners are accommodated in the insulator 3.

Further, as described with reference to FIG. 14, in order to effectively prevent the drive coil from being disturbed and align and wind the drive coil, the guide groove 407 a also corresponds to the start of the layer transition of the drive coil in the third embodiment. Provided at the corner to be At this time, as shown in FIG. 16, since the position of the guide groove 407a is arranged at a position slightly shifted inward from the corner of the insulator 3, the interval between the guide holes 407 forming the guide groove 407a, The position and the like are also provided along the route of the drive coil so as to correspond to the deviation.
Further, as shown in FIG. 15, if the guide holes 406, 407, 408 are provided at both ends of the insulating sheet 4 in the coil end direction, the bending direction in the folding line indicated by the one-dot chain line in FIG. The guide groove can be arranged at a desired corner portion 32. The guide holes 406, 407, and 408 may be configured to be provided only at one end in the coil end direction of the insulating sheet 4, and the guide groove is formed by changing the folding direction of the folding line indicated by the one-dot chain line in FIG. It can be arranged at a desired corner.

As described above, according to the third embodiment, since the three kinds of guide holes 406, 407, and 408 are provided in the insulating sheet 4, in addition to the effects described in the first embodiment, the first of the insulating sheet 4 is provided. By simply changing the folding position (dotted line in the figure) of the covering portion, three types of drive coils having different wire diameters can be aligned and wound by one type of insulating sheet 4, and productivity can be improved.
Further, by arranging the guide groove at the position that becomes the layer transfer start portion, it is possible to efficiently prevent winding disturbance of the drive coil and to wind it in alignment.

In the third embodiment, an example in which three types of guide holes are provided in the insulating sheet 4 has been described. However, the present invention is not limited to this, and the number of types of guide holes may be determined as necessary.
Of course, the armature in the third embodiment can be applied not only to a single-sided linear motor but also to a double-sided linear motor or an armature of a rotating electric machine, and the same effect can be obtained. The armature structure is not limited to that shown in the figure.

It is a top view which shows the structure of the armature of the single-sided linear motor by Embodiment 1 of this invention, and a side sectional view which follows the II line | wire of this top view. FIG. 2 is an exploded perspective view and an assembled perspective view showing a part of the armature in FIG. 1 in an enlarged manner, with a drive coil omitted. It is a perspective view which shows the structure of the insulator 3 by another example of Embodiment 1 of this invention. It is a perspective view which shows the structure of the armature which mounted | wore the insulator in FIG. 3, and a drive coil is abbreviate | omitted. It is a top view which shows the shape of the insulating sheet by the other another example of Embodiment 1 of this invention. It is a fragmentary perspective view which shows the structure of the armature with which the insulating sheet in FIG. 5 was mounted | worn, and a drive coil is abbreviate | omitted. In Embodiment 1, it is the top view of the insulating sheet 4 which shows the variation of a guide groove, and its sectional drawing. In FIG. 7, it is sectional drawing of the insulating sheet 4 which shows the other variation of a guide groove. In Embodiment 1, it is a perspective view of the armature which shows the variation of the mounting method of an insulating sheet, and a drive coil is abbreviate | omitted. It is a top view which shows the armature at the time of applying Embodiment 1 of this invention to a double-sided linear motor, and a sectional side view along the II-II line of this top view. FIG. 3 is a plan view showing an armature when the first embodiment of the present invention is applied to a rotating electric machine in which the armature functions as a stator, and a side sectional view taken along line III-III of the plan view. It is a top view which shows the shape of the insulating sheet by Embodiment 2 of this invention. It is a perspective view which shows the structure of the armature which attached the insulating sheet in FIG. 12, and a drive coil is abbreviate | omitted. It is a top view of the armature in FIG. 13, and shows the process of winding a drive coil around an armature. It is a top view which shows the shape of the insulating sheet by Embodiment 3 of this invention. It is a fragmentary perspective view of the armature which shows the example of mounting | wearing with the insulation sheet in FIG. 15, and a magnetic pole tooth and a drive coil are abbreviate | omitted.

Explanation of symbols

1 armature, 2 magnetic teeth, 3 insulators, 4 insulation sheets,
5, 50, 51 drive coil, 400, 404-408 guide hole,
400a-408a Guide groove.

Claims (6)

An armature comprising a magnetic pole tooth and a drive coil wound around the magnetic pole tooth,
The drive coil is mounted on both end surfaces of the magnetic pole teeth on the coil end side and electrically insulated between the drive coil and the magnetic pole teeth, and is mounted on both side surfaces of the magnetic pole teeth on the drive direction side. It is wound around the magnetic pole teeth via an insulating sheet that electrically insulates between the drive coil and the magnetic pole teeth,
The armature, wherein the insulating sheet has a guide groove for aligning and winding the drive coil. The insulating sheet has two types of guide grooves corresponding to two types of drive coils having different wire diameters, and among the two types of drive coils, a guide groove not corresponding to the wire diameter of the winding drive coil is The armature according to claim 1, wherein the armature is mounted on the magnetic pole teeth so as to be accommodated in the insulator. The armature according to claim 1, wherein the guide groove is formed by providing a guide hole in the insulating sheet and bending the insulating sheet. The guide hole is disposed at a position overlapping the corner of the end surface on the coil end side of the insulator when the insulating sheet is mounted on the magnetic pole teeth together with the insulator, and the insulation is provided at the position where the guide hole is disposed. The armature according to claim 3, wherein the guide groove is formed by bending a sheet. The insulating sheet has a plurality of types of guide holes corresponding to a plurality of types of drive coils having different wire diameters, and among the plurality of types of drive coils, the guide holes corresponding to the wire diameters of the drive coils to be wound are The armature according to claim 1, wherein the guide groove is formed by bending the insulating sheet. An insulating sheet that is mounted on both side surfaces on the drive direction side of the magnetic teeth and electrically insulates between the drive coil wound around the magnetic teeth and the magnetic teeth,
The insulating sheet according to claim 1, wherein the insulating sheet has a guide groove for aligning and winding the drive coil.

Images