JP5285328B2 - Armature and motor - Google Patents

Description

  The present invention relates to an armature and a motor, and more particularly to an armature and a motor in which a winding is wound around a slot by a double flyer system.

2. Description of the Related Art As an electric motor that constitutes an electrical component or the like that is mounted on a vehicle, there is an electric motor that is configured by pivotally supporting an armature on a yoke in which a plurality of magnetic poles are formed by a plurality of pairs of permanent magnets.
As an armature of such a motor, there has been proposed one in which a plurality of cores are externally fitted on a shaft (see, for example, Patent Document 1). In this technology, each core is composed of a plurality of substantially T-shaped teeth having the same shape and a teeth connecting portion that connects the teeth, and the portion surrounded by the teeth and the teeth connecting portion is configured as a slot having the same shape. A winding is wound around these slots.

  As a winding technique for winding the winding around the core, a so-called double flyer method is known in which the winding is wound at two places simultaneously in a point-symmetric relationship with respect to the rotation axis. That is, a winding at the beginning of winding is performed between a pair of slots separated by a predetermined number of teeth, and this is performed on both sides in a point-symmetrical relationship with respect to the rotation axis, and then sequentially shifted to adjacent slots to similarly wind the windings. It is a technology to apply.

In addition, a technique has been proposed in which a convex portion for restricting the winding position of an armature coil wound around a slot of the armature core is provided on the end face of the armature core.

Japanese Patent Application Laid-Open No. 2001-289817 (column 1, FIG. 5) Japanese Utility Model Publication No. 59-179447 (claims for registration of utility model, FIGS. 2 and 3)

However, in the winding technique as in Patent Document 1, as shown in FIG. 20, a space 56 is formed at the center side of the core 50 in the slots 53 b and 53 g positioned between the first windings 55 a wound first. It will occur.
That is, as shown by the dotted line in FIG. 20, when winding the second winding 55b after the first winding 55a wound first, the slots 53b and 53g positioned between the first windings 55a The first winding 55a is already wound so as to hide the space on the core 50 center side of the slots 53b and 53g. Therefore, when the second winding 55b is wound, a space 56 is generated on the core 50 center side of the slots 53b and 53g.
For this reason, the position and state of the second winding 55b wound around the outer periphery of the core 50 in the space 56 and the winding 55e wound further around the outer periphery of the core 50 become unstable. Further, this unstable position and state also affects the subsequent position and state of the winding. As a result, there is a problem that rotational unbalance of the armature of the motor occurs.

  Further, in the technique as disclosed in Patent Document 2, it is a technique for winding the winding also inside the slot, and it is merely intended to improve the occupancy ratio, and the winding group can be sufficiently aligned. There was an inconvenience that it was not possible.

In this way, armature imbalance caused by winding processing, etc., can be improved by measuring dynamic imbalance in the balance correction process in the subsequent process and performing negative correction or positive correction if it is out of specification. Is also possible. Here, the minus correction is a method in which a necessary amount of a heavy part of the core that causes unbalance is scraped off by a cutter or a laser. Plus correction is a method of adding a required amount of putty or the like on a portion that is a light part of a winding or a slot and causes unbalance. However, each of these correction processes requires a dedicated work process or processing equipment, leading to an increase in product cost and a factor of reducing motor efficiency.
If the original unbalance generation amount can be reduced, the balance correction process can be abolished, but various factors affect the unbalance in the winding process that accounts for a large amount of the unbalance generation amount. For the purpose of reducing unbalance, a specification has been proposed in which a symmetrical winding is applied to a core having an even number of slots. It has been difficult to reduce it.

On the other hand, many armatures use a variable former 71 in a flyer-type winding device 70 using a flyer 72 to wind the winding while controlling the position of the winding. Here, the variable former 71 is a member that can advance and retreat in the radial direction, and can adjust the induction of the winding in accordance with the winding degree of the winding. By using the variable former 71, the winding can be guided to the back of the slot 53, and the space can be increased in each slot 53.
When such a variable former 71 is used, in many cases, in order to absorb the stacking thickness variation of the core (laminated core) 50, as shown in FIG. A predetermined clearance 74 is provided.

  However, as shown in FIG. 22, the path of the winding 55 when it is wound by the flyer method is originally where the winding 55 should be positioned on the shaft axis side from the line X. The winding 55 is pulled in the direction, the winding 55 enters the clearance (gap) 74 between the variable former 71 and the core upper portion 51, and the wire is wound around the point B, which is out of the target from the point A. there were. In FIG. 22, the trajectory of the winding is highlighted.

The present invention has been made in view of the above circumstances, and its purpose is to stabilize the position and state of the wound winding in the armature in which the winding is wound around the slot in a double flyer system, An object of the present invention is to provide an armature and a motor capable of improving the rotation balance of the armature.
It is another object of the present invention to provide an armature and a motor in which the rotation unbalance of the armature is reduced and the rotation unbalance measurement process and the balance correction process after winding are unnecessary.

According to the armature according to claim 1, the problem is that a shaft, a core having a plurality of slots that are externally fitted to the shaft, and a plurality of windings wound between the slots via an insulator that covers the slots. A plurality of windings wound between a pair of slots spaced at least one or more of the slots, and having a diameter around the shaft. An outer guide wall having an inner surface substantially along a line on the outer peripheral side of the core is formed on an end surface in the axial direction of the insulator, and the outer guide wall is Except for the two windings wound first between the slots, at least a part of the windings wound between all the slots is used to incline the inner peripheral surface. It is solved by the guide to Rukoto, to wound along.

  As described above, an outer guide wall having an inner surface substantially along a line on the outer periphery side of the core is formed on the end surface in the axial direction of the insulator, and a wall serving as a guide is also provided on the end surface side. The position can be sufficiently stabilized. That is, it is possible to stabilize the winding position by constraining the winding position of each layer on the end face side, and to reduce the unbalance by aligning the winding coil position and the center of gravity at the symmetrical position. Thereby, even when there is a product change, the balance can be sufficiently stabilized.

According to the armature according to claim 2, the problem is that a shaft, a core having a plurality of slots fitted on the shaft, and a plurality of windings wound between the slots via an insulator covering the slots. A plurality of windings wound between a pair of slots spaced at least one or more of the slots, and having a diameter around the shaft. The shaft-side bottom surface of the slot located between the first winding wound first is wound on a line on the outer periphery side of the core of the first winding. A bottom portion substantially along the shaft, and in all the slots, the shaft-side end of the winding is in contact with the shaft-side bottom surface of each slot, and the axial direction of the insulator The surface are outer guide wall formed with an inner surface substantially along the core outer peripheral side of the line, the outer guide wall, with the exception of first winding two portions of windings wound between the slots, at least a portion of the winding wound around between all the slots, Rukoto be guided for winding along the inclination direction of the inner peripheral surface, it is solved by.

Thus, the shaft side bottom surface of the slot located between the first windings wound first has a bottom portion substantially along the line on the outer peripheral side of the core of the first winding. In the armature in which the winding is wound in the slot, it is possible to prevent a space from being generated on the shaft side of the slot between the first windings, and the position and state of the winding are unstable due to this space. Can be prevented. As a result, it is possible to prevent rotation unbalance of the armature of the motor. Furthermore, since the armature with improved rotation balance can be obtained by the winding process, the subsequent rotation unbalance measurement process and balance correction process can be omitted.
In all slots, the end of the winding on the shaft side is in contact with the bottom surface on the shaft side of each slot, and in the armature in which the winding is wound around the slot by the double flyer method, the winding and the shaft of the slot Since there is no space between the side bottom surface, it is possible to prevent the winding position and state from becoming unstable due to this space. As a result, it is possible to prevent rotation unbalance of the armature of the motor. Furthermore, since the armature with improved rotation balance can be obtained by the winding process, the subsequent rotation unbalance measurement process and balance correction process can be omitted.
Further, an outer guide wall having an inner surface substantially along the line on the outer periphery side of the core is formed on the end surface in the axial direction of the insulator, so that it becomes a guide on the end surface side in addition to the winding guide in the core slot. A wall is provided, and the winding position that causes unbalance can be further stabilized.
In other words, in addition to the shape in the slot, a wall serving as a guide is also provided on the end face side, so that it is possible to prevent the winding on the end face mainly from collapsing in the outer circumferential direction, and the winding position of each layer can be determined. The winding position is further stabilized by restraining the end face side, and the unbalance is reduced by aligning the winding coil position and the center of gravity at the symmetrical position.

According to the armature according to claim 3 , the problem is that a shaft, a core having a plurality of slots fitted on the shaft, and a plurality of windings wound between the slots via an insulator covering the slots. A plurality of windings wound between a pair of slots spaced at least one or more of the slots, and having a diameter around the shaft. The insulator is wound sequentially from two locations facing each other, and an outer guide wall having an inner surface substantially along the line on the outer periphery side of the core on the axial end surface of the insulator, and a winding line on the inner periphery side of the core. inner guide wall having along the outer surface is formed, the outer guide wall, except for the winding of the first winding two portions wound between the slots, between all of the slots At least a portion of the winding is wound, Rukoto be guided for winding along the inclination direction of the inner peripheral surface, it is solved by.

If comprised like Claim 3, the outer side guide wall which has an inner surface substantially along the line of the said core outer peripheral side is formed in the axial direction end surface of an insulator, At the same time, it substantially followed the winding line of the core inner peripheral side. Since an inner guide wall having an outer surface is formed, the inner guide wall is wound along the outer peripheral surface (outer surface substantially along the winding line) of the inner guide wall, so that it is added to the winding guide in the core slot. In addition, the inner and outer guide walls are provided on the end face side, so that the winding can be wound within a predetermined range, and the winding position that causes unbalance is more reliably stabilized. It becomes possible.

According to the armature according to claim 4 , the problem is that a shaft, a core having a plurality of slots fitted on the shaft, and a plurality of windings wound between the slots via an insulator covering the slots. A plurality of windings wound between a pair of slots spaced at least one or more of the slots, and having a diameter around the shaft. The shaft-side bottom surface of the slot located between the first winding wound first is wound on a line on the outer periphery side of the core of the first winding. A bottom portion substantially along the shaft, and in all the slots, the shaft-side end of the winding is in contact with the shaft-side bottom surface of each slot, and the axial direction of the insulator An outer guide wall having an inner surface along substantially the core outer peripheral side line on the surface, are the inner guide walls formed having an outer surface substantially along the winding line of the core periphery, the outer guide wall Except for two windings wound first between the slots, and winding at least a part of the windings wound between all the slots along the inclined direction of the inner peripheral surface. Rukoto be guided so as to be solved by.

As described above, the guide wall having the inner surface substantially along the line on the outer peripheral side of the core is formed on the end surface in the axial direction of the insulator, so that the guide is also provided on the end surface side in addition to the winding guide in the core slot. It becomes possible to further stabilize the winding position that causes unbalance. At the same time, since the inner guide wall having an outer surface substantially along the line on the inner peripheral side of the core is formed, the first winding not guided by the guide wall having the inner surface substantially along the line on the outer peripheral side of the core is also on the inner side. The winding position guided by the guide wall and further guided by the outer guide wall and the inner guide wall can further stabilize the winding position that causes unbalance more reliably.
In other words, in addition to the shape in the slot, an outer guide wall having a guide wall formed on the outer peripheral side on the end surface side and an inner guide wall formed on the inner peripheral side are provided, and the winding on the end surface portion is in the outer peripheral direction. In addition to preventing the coil from collapsing, it is also possible to guide and regulate the windings on the inner guide wall. By constraining the winding position of each layer also on the end face side, the winding position is further stabilized and symmetrical. The unbalance is reduced by aligning the winding coil position and the center of gravity of the position.

According to the armature according to claim 5 , the subject is a plurality of windings wound between the slots via a shaft, a core having a plurality of slots fitted on the shaft, and an insulator covering the slots. A plurality of windings wound between a pair of slots spaced at least one or more of the slots, and having a diameter around the shaft. The shaft-side bottom surface of the slot positioned between the first windings wound first is wound with the slot positioned between the first windings wound sequentially from two locations facing in the direction. All of the windings wound earlier are formed on a substantially line on the outer peripheral side of the core or on the outer peripheral side of the core from the line, and in all the slots, the windings Yafuto end is in contact with the shaft-side bottom surface of each said slot, the axial end surface of the insulator is the outer guide wall formed with an inner surface substantially along the core outer peripheral side of the line, the The outer guide wall has at least a portion of the windings wound between all the slots along the inclination direction of the inner peripheral surface except for two windings wound first between the slots. Rukoto be guided so as to wound Te, it is solved by.

Thus, the shaft side bottom surface of the slot located between the first windings wound first is the outer peripheral side of the core of all the windings wound across the slot located between the first windings. Since it is formed on the core or on the outer periphery of the core from the line, it prevents the space from being generated on the shaft side of the slot between the first winding in the armature in which the winding is wound around the slot by the double flyer method. It is possible to prevent the winding position and state from becoming unstable due to this space. As a result, it is possible to prevent rotation unbalance of the armature of the motor. Furthermore, since the armature with improved rotation balance can be obtained by the winding process, the subsequent rotation unbalance measurement process and balance correction process can be omitted.
In all slots, the end of the winding on the shaft side is in contact with the bottom surface on the shaft side of each slot, and in the armature in which the winding is wound around the slot by the double flyer method, the winding and the shaft of the slot Since there is no space between the side bottom surface, it is possible to prevent the winding position and state from becoming unstable due to this space. As a result, it is possible to prevent rotation unbalance of the armature of the motor. Furthermore, since the armature with improved rotation balance can be obtained by the winding process, the subsequent rotation unbalance measurement process and balance correction process can be omitted.
In addition to the winding guide in the core slot, a guide wall is also provided on the end surface side in addition to the winding guide in the core slot by forming a guide wall having an inner surface substantially along the outer peripheral side line on the axial end surface of the insulator. Thus, it is possible to further stabilize the winding position that causes unbalance.
In other words, in addition to the shape in the slot, a wall serving as a guide is also provided on the end face side, so that it is possible to prevent the winding on the end face mainly from collapsing in the outer circumferential direction, and the winding position of each layer can be determined. The winding position is further stabilized by restraining the end face side, and the unbalance is reduced by aligning the winding coil position and the center of gravity at the symmetrical position.

According to the armature according to claim 6 , the problem is that a shaft, a core having a plurality of slots fitted on the shaft, and a plurality of windings wound between the slots via an insulator covering the slots. A plurality of windings wound between a pair of slots spaced at least one or more of the slots, and having a diameter around the shaft. The shaft-side bottom surface of the slot positioned between the first windings wound first is wound with the slot positioned between the first windings wound sequentially from two locations facing in the direction. All of the windings wound earlier are formed on a substantially line on the outer peripheral side of the core or on the outer peripheral side of the core from the line, and in all the slots, the windings The shaft-side end portion is in contact with the shaft-side bottom surface of each of the slots, and an outer guide wall having an inner surface substantially along a line on the outer peripheral side of the core on the axial end surface of the insulator, and a winding on the inner peripheral side of the core. An inner guide wall having an outer surface substantially along the line is formed , the outer guide wall being wound between all the slots except for the two windings initially wound between the slots. at least a portion of the winding is wound, is solved by a guide to Rukoto to wound along the inclination direction of the inner peripheral surface.

  If comprised in this way, as above-mentioned, in addition to the winding guide in a core slot, the wall used as an inner side and an outer side guide will also be provided in the end surface side, and a coil | winding is wound within the predetermined range. This makes it possible to more reliably stabilize the winding position that causes unbalance.

In addition, the winding wound between all the slots initially wound between the slots is configured to include a portion wound along the guide wall (outer guide wall or inner guide wall). .
With this configuration, since the wound winding has a portion wound along the guide wall, the direction of the winding is regulated and aligned and wound in a predetermined direction. It will be wound in a well-balanced manner.

  The last winding wound between the slots is wound along the outer guide wall. In this way, since the last winding wound between the slots is wound along the outer guide wall, not only can it be forced to align within the guide wall, but also the shape within the slot. In addition, the outer guide wall on the end face side can prevent the winding on the end face from collapsing in the outer circumferential direction, and the winding position of each layer is also constrained on the end face side to further stabilize the winding position. The unbalance is reduced by aligning the winding coil position and the center of gravity.

In addition, recesses are formed on the side surfaces of the pair of slots around which the first winding wound first is wound so as to be substantially opposed to each other on the shaft side. A part of the winding may be accommodated.
By comprising in this way, a 1st coil | winding can be guide | induced in a recessed part and the position and state of a 1st coil | winding can be stabilized. As a result, it is possible to prevent rotation unbalance of the armature of the motor.

In addition, recesses are formed on the side surfaces of the pair of slots in which the second winding next to the first winding wound first is wound so that the recesses are substantially opposed to each other on the shaft side. A part of the second winding may be accommodated inside.
By comprising in this way, a 2nd winding can be guide | induced in a recessed part and the position and state of a 2nd winding can be stabilized. As a result, it is possible to prevent rotation unbalance of the armature of the motor.

Further, in each slot, a first layer winding on the shaft side and a second layer winding wound around the core outer periphery of the first layer winding are laminated in the radial direction, On the side surface of the slot, a recess recessed toward the winding location of the other slot on which the first layer winding is bridged is formed at the winding location of the first layer winding. A part of the first layer winding may be accommodated.
By comprising in this way, the coil | winding of a 1st layer can be guide | induced in a recessed part and the position and state of a coil | winding of a 1st layer can be stabilized. As a result, it is possible to prevent rotation unbalance of the armature of the motor.

Further, in each slot, a first layer winding on the shaft side and a second layer winding wound around the core outer periphery of the first layer winding are laminated in the radial direction, On the side surface of the slot, the second layer winding is recessed toward the winding position of the other slot, and the second layer winding and the lower layer winding of the first layer winding A concave portion extending over the thickness is formed, and the concave portion may accommodate a part of the windings of the first layer and the second layer.
By comprising in this way, the winding of a 2nd layer can be guide | induced in a recessed part and the position and state of a winding of a 2nd layer can be stabilized. As a result, it is possible to prevent rotation unbalance of the armature of the motor.

In addition, a guide is formed on the outer peripheral side of the core of the recess so as to be inclined with respect to the side surface of the slot and guide the second layer winding into the recess. Thus, it may be in contact with the guide.
With this configuration, it is possible to prevent the second layer winding wound around the outer periphery of the core from coming off the slot.

Moreover, the bottom part of the slot located between the 1st coil | windings wound initially may be comprised from the insulator only or the insulator and the core.
When the bottom part of the slot located between the first windings is composed only of an insulator, the core may be formed in the same shape for all the slots, and it is possible to rotate and stack each sheet or with a constant number of sheets. It is possible to reduce the rotational imbalance caused by the thickness deviation.
When the bottom of the slot located between the first windings is composed of an insulator and a core, even if it is difficult to control the winding position by forming the bottom only with the insulator, the bottom of the slot Since it can be comprised from a core, it can prevent that space arises in the shaft side of the slot between 1st coil | windings, and it can prevent that instability of the position and state of a coil | winding resulting from this space arises.

Further, as in claim 15, the shaft-side end surface of the outer guide wall has an inclined surface whose height gradually decreases toward the shaft side that guides the wound winding to the shaft side. Preferably it is formed.
In this way, an inclined surface whose height gradually decreases toward the shaft side that guides the wound winding to the shaft side on the shaft side end surface of the outer guide wall serves as a guide, and slides the winding toward the shaft side. As a result, it is possible to guide the winding that has been removed outward from the shaft side to a predetermined target point on the inclined surface. As described above, even if the winding enters between the variable former and the upper part of the core or the upper part of the variable former and the outer guide wall, the winding is guided to the shaft side by the inclined surface, and the winding is wound at a predetermined position. It can be turned.

May also be configured as a motor, characterized in that it comprises the armature according to any one of claims 1 to 1 5.
By configuring in this way, it is possible to obtain a motor with improved armature rotation balance.

According to the present invention, a guide wall having an inner surface substantially along a line on the outer peripheral side of the core is formed on the end surface in the axial direction of the insulator, and a wall serving as a guide is also provided on the end surface side. The position can be sufficiently stabilized. That is, it is possible to stabilize the winding position by constraining the winding position of each layer on the end face side, and to reduce the unbalance by aligning the winding coil position and the center of gravity at the symmetrical position. Thereby, even when there is a product change, the balance can be sufficiently stabilized.
In addition, since the bottom surface on the shaft side of the slot located between the first winding wound first is provided with a bottom portion substantially along the line on the outer peripheral side of the core of the first winding, In the armature around which the winding is wound, it is possible to prevent a space from being generated on the shaft side of the slot between the first windings, and to prevent the position and state of the winding from being unstable due to this space. it can.

Further, an outer guide wall having an inner surface substantially along a line on the outer periphery side of the core is formed on the end surface in the axial direction of the insulator, so that a wall serving as a guide is also provided on the end surface side in addition to the winding guide in the core slot. Thus, it is possible to further stabilize the winding position that causes unbalance.
Furthermore, since the inner guide wall having the outer surface substantially along the winding line on the inner peripheral side of the core is formed on the end surface side, it is possible to further stabilize the winding position that causes unbalance. .
An outer guide wall having an inner surface substantially along the core outer peripheral line is formed on the end surface in the axial direction of the insulator, and at the same time, an inner guide wall having an outer surface substantially along the core inner peripheral winding line is formed. Therefore, by winding along the outer peripheral surface of the inner guide wall (outer surface substantially along the winding line), in addition to the winding guide in the core slot, the inner and outer guides on the end surface side as well Therefore, the winding can be wound within a predetermined range, and the winding position that causes unbalance can be more reliably stabilized.

As a result, it is possible to prevent rotation unbalance of the armature of the motor. Furthermore, since the armature with improved rotation balance can be obtained by the winding process, the subsequent rotation unbalance measurement process and balance correction process can be omitted.
In all slots, the end of the winding on the shaft side is in contact with the bottom surface on the shaft side of each slot, and in the armature in which the winding is wound around the slot by the double flyer method, the winding and the shaft of the slot Since there is no space between the side bottom surface, it is possible to prevent the winding position and state from becoming unstable due to this space. As a result, it is possible to prevent rotation unbalance of the armature of the motor. Furthermore, since the armature with improved rotation balance can be obtained by the winding process, the subsequent rotation unbalance measurement process and balance correction process can be omitted.

Further, as in claim 15, the shaft-side end surface of the outer guide wall has an inclined surface whose height gradually decreases toward the shaft side that guides the wound winding to the shaft side. Then, the inclined surface serves as a guide, and the winding can be slid to the shaft side, so that the winding deviated from the shaft side can be guided to a predetermined target point on the inclined surface.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. The members, arrangements, and the like described below do not limit the present invention, and various modifications can be made in accordance with the spirit of the present invention.
1 to 5 relate to an embodiment of the present invention, FIG. 1 is a sectional view of a motor according to an embodiment of the present invention, FIG. 2 is a perspective view of the armature of FIG. 1, and FIG. FIG. 4 is a partial cross-sectional view of the core and the insulator taken along the line aa, and FIG. 5 is a partial cross-sectional view of the armature taken along the line aa. In FIG. 5, although different from the actual winding, for the sake of convenience, the same winding is shown with the same design so that it will be clear in the description (in the present specification, the design of the winding will be similarly described below). Shown).

  As shown in FIG. 1, the motor 10 according to the present embodiment includes a stator 11, an armature 12, a shaft 13 of the armature 12, bearing portions 14 and 15 that support the shaft 13, a brush device 16, And is housed in the housing 17.

FIG. 2 is a perspective view of the armature 12. A core 20 is press-fitted and fixed to the shaft 13.
The core 20 is formed by laminating a plurality of core sheets in the axial direction of the shaft 13, and as shown in FIG. 4, a through hole 24 is formed in the center, and the shaft 13 is inserted and integrated into the through hole 24. It has come to be. The core 20 includes ten substantially T-shaped teeth 21 having the same shape, and teeth connecting portions 22 that connect the teeth 21 radially. A portion surrounded by the teeth 21 and the teeth connecting portion 22 has a cutout shape, and the cutout portions constitute ten slots 23 (23a to 23j) having the same shape. As shown in FIG. 5, a winding 25 is wound around each of the slots 23 a to 23 j via an insulator 30.

  The commutator 40 is formed of a resin insulating material at the shaft center portion, and is fitted on one end side of the shaft 13. The shaft 13 is subjected to four-groove processing and the like, and the commutator 40 and the shaft 13 are prevented from rotating and coming off.

  The insulator 30 is an insulating resin part, and as shown in FIG. 3, a winding insulating portion 31 that insulates the core 20 from the winding 25, a shaft insulating portion 32, a side surface portion 33, and an axial direction. The outer guide walls 41 (41a to 41j) having a predetermined width are formed on the extension of the teeth 21 at the end surfaces of the teeth 21 and are integrally formed. The side surface portion 33 includes a through-hole through which the shaft 13 is inserted, and a cylindrical shaft insulating portion 32 is provided so as to protrude from the side surface portion 33.

As shown in FIGS. 4 and 5, the insulator 30 of the present embodiment has a shape different from the shape of the inner surface of the slot 23.
Further, the outer guide walls 41 (41a to 41j) formed with a predetermined width on the extension of the teeth 21 on the end face in the axial direction of the insulator 30 are the inner side surfaces 42 (42a to 42a to approximately) along the outer peripheral side line of the core 20. 42j) is formed, and the outer peripheral surface 43 is formed so as to be aligned with a line on the outer peripheral side of the core 20. That is, as shown in FIGS. 4 and 5, the inner side surface 42 is formed on the outer guide wall 41 so as to regulate the outer core portion of the wound windings 25 a to 25 e. This inner surface 42 is at least partially of the windings (25b-25e) wound between all the slots except for the two windings (25a, 25a) initially wound between the slots. It is formed so as to be wound along the inclination direction of the inner surface 42.

  Further, the winding insulating portions 31 are adjacent to each other at a predetermined interval corresponding to the slots 23 of the core 20 and are formed in a substantially V-shaped cross section. As shown in FIG. 3, the winding insulating portion 31 is inserted into each slot 23 of the core 20 and is configured to cover the inner surface of the slot 23. The axial length of the shaft 13 of the winding insulating portion 31 is half of the length of the core 20, and as shown in FIG. 3, the same two insulators 30 are inserted into the slot from both sides in the axial direction of the shaft 13. It is configured to be able to cover the entire peripheral surface in the slot 23 by being fitted into the slot 23.

When the insulator 30 is assembled to the armature 12, the winding insulating portion 31, the shaft insulating portion 32, and the side surface portion 33 respectively insulate the inner peripheral surface of the slot 23, the corresponding shaft portion, the end surface of the core 20 and the winding 25. Do.
In a state where the insulator 30 and the commutator 40 are assembled to the shaft 13, the winding 25 is hooked on the slot 23 of the core 20 and the flange portion 45 of the commutator 40 and the winding 25 is applied. 20 is fixed.

  Since the armature 12 of the present embodiment is a double flyer system in which the winding 25 is wound from two locations facing each other in the radial direction around the shaft 13, the shape of the insulator 30 is point-symmetric about the through hole 24. Thus, the portions fitted into the slots 23a to 23e and the portions fitted into the slots 23f to 23j are configured to have the same shape.

  The winding of the winding around the armature is performed by a known winding winding device using a variable former while controlling the position of the winding. The winding winding device supplies the winding while rotating the armature, applies the winding while rotating the flyer, and winds the winding between predetermined teeth (slots). At this time, the winding device has a variable former. The variable former is made of a member that can advance and retract in the radial direction, and the winding induction can be adjusted according to the winding degree of the winding, so that the winding can be guided to the back of the slot. It is possible to increase the space in each slot.

  As shown in FIG. 5, windings 25a to 25e are wound around the slots 23a to 23j. The first winding 25a that is wound first is wound a predetermined number of times between a slot 23a that is the beginning of winding and a slot 23c that is skipped by one slot. Moreover, it winds also from the slot 23f which faced 180 degree | times by the same method substantially simultaneously. That is, the winding work is performed from two directions facing each other by 180 degrees. Thereafter, the second winding 25b to the fifth winding 25e are sequentially wound in the next slot in a counterclockwise direction.

As shown in FIG. 5, each slot 23 a to 23 j has a first layer winding on the through-hole 24 side and a second layer winding wound around the outer periphery of the core 20 of the first layer winding. The wires are laminated so as to have two layers in the radial direction.
As shown in FIGS. 4 and 5, the slots 25 a to 23 j around which the windings 25 a to 25 c are wound as the first layer are provided on the insulator 30 at the positions on the through-hole 24 side, and the first layer windings 25 a to 25 c are provided. A concave recess 34a is formed toward the inside of 25c, that is, toward the winding location of the other slots 23a-23j around which the windings 25a-25c are bridged. Part of the first layer windings 25a to 25c is accommodated in the recess 34a.

  In addition, the portion where the windings 25c to 25e are wound as the second layer far from the through hole 24 is formed on the insulator 30 toward the inside of the second layer windings 25c to 25e, that is, the windings 25c to 25e. A concave recess 34b is formed toward the winding location of the other slots 23a to 23j. The recess 34b is formed so as to extend over the thickness of the first layer and the second layer of the winding, and the recess 34b has the second layer of windings 25c to 25e and the through hole 24 side thereof. Part of the wound first-layer windings 25a to 25c is accommodated.

  The surface of the recess 34b on the outer periphery side of the core 20 is formed as a guide 34c for guiding the second layer windings 25c to 25e into the recess 34b. The guide 34c is formed obliquely with respect to the side surfaces of the slots 23a to 23j. The end portion on the through hole 24 side of the guide 34c is provided closer to the through hole 24 side than the end portion on the outer peripheral side of the core 20 of the windings 25c to 25e of the second layer, and the end portion on the outer peripheral side of the core 20 of the guide 34c is The two layers of windings 25c to 25e are provided on the outer peripheral side of the core 20 relative to the outer peripheral side ends of the core 20. The outer peripheral side of the core 20 of the second-layer windings 25c to 25e is in contact with the guide 34c. The guide 34c prevents the windings 25c to 25e from being detached from the slots 23a to 23j.

  The slots 23b and 23g located between the first windings 25a wound first are formed at positions where the bottom surface on the through hole 24 side of the insulator 30 is retracted to the outer peripheral side of the core 20 with respect to the other slots. The first winding 25a has a bottom portion substantially along a line on the outer peripheral side of the core 20.

Further, as shown in FIG. 4, except for the windings 25a and 25a, the windings 25b and 25b are guided by the inner side surfaces 42b and 42g, and the windings 25c and 25c are guided by the inner side surfaces 42c and 42h. 25d and 25d are guided by a part of the inner side surfaces 42d and 42e and a part of 42i and 42j, and the windings 25e and 25e are guided and wound by the inner side surfaces 42e and 42f, 42j and 42a.
Thus, the last windings 25e and 25e wound between the slots are wound along the inner side surfaces 42e and 42f of the outer guide walls 41e and 41f and the inner side surfaces 42j and 42a of the outer guide walls 41j and 41a. Turned.

  In the present embodiment, the shaft-side bottom surface of the slot located between the first windings wound first is provided with a bottom portion substantially along the line on the outer peripheral side of the core of the first winding. In the armature in which the winding is wound in the slot, it is possible to prevent a space from being generated on the shaft side of the slot between the first windings, and the position and state of the winding are unstable due to this space. Can be prevented. In addition to the winding guide in the core slot, a guide wall is also provided on the end face side in addition to the winding guide in the core slot by forming the guide wall having the inner face substantially along the line on the outer periphery side of the core on the axial end face of the insulator. Thus, the winding position that causes unbalance can be further stabilized.

  In the present embodiment, the winding 25 is wound between a pair of slots separated by one slot. However, when the winding 25 is wound between slots separated by two or more slots, the first Two or more slots positioned between the windings 25a are surrounded not only by the first winding 25a but also by the windings 25 after the second winding 25b. Therefore, in this case, the bottom surface on the through hole 24 side of the insulator 30 of the slot located between the first windings 25a wound first is wound before the winding of the slot with these slots separated. All of the windings 25 are formed on a substantially line on the outer periphery side of the core 20 or at a position retracted toward the outer periphery side of the core 20 so as to be closer to the outer periphery side of the core 20 than this line.

In this embodiment, all the cores 20 are configured to include the teeth 21 having the same shape, and only the insulator 30 includes the recesses 34a and 34b, and the bottom surfaces of the insulators 30 in the slots 23b and 23g are higher than those of the other slots. Since the core 20 is formed at a position retracted to the outer peripheral side, the core 20 may have the same shape in all slots, and can be rotated and laminated for each sheet or by a constant number of sheets. It becomes possible to reduce.
As shown in FIG. 6, the core 20 itself includes recesses 26 a and 26 b along the recesses 34 a and 34 b, and the bottom surfaces of the slots 23 b and 23 g of the core 20 recede toward the outer periphery side of the core 20 relative to the other slots. You may comprise as an unusual slot shape formed in the position.
In such a configuration, since the bottom surfaces of the slots 23b and 23g of the core 20 itself are formed on the outer peripheral side of the core, the relative amount of the slots filled with the core can be assigned to the recesses 26a and 26b. As a result, the rotational imbalance can be reduced.

  Further, even when it is difficult to control the winding position by forming the recesses 34a and 34b and the recessed bottom surfaces of the slots 23b and 23g only by the insulator 30, the recesses can be formed as shown in FIG. 34b and the recesses 26a and 26b of the core 20 and the bottom surfaces of the slots 23b and 23g retracted can be formed of the insulator 30 and the core 20. Therefore, even in such a case, the windings 25a to 25e can be housed in the recesses 26a and 26b and can be stabilized, and a space is created on the through hole 24 side of the slots 23b and 23g between the first windings 25a. This can prevent the occurrence of instability in the position and state of the winding due to this space.

FIGS. 7 and 8 show another embodiment. FIG. 7 is a partial cross-sectional view of the core and the insulator taken along line aa, and FIG. 8 is a partial cross-sectional view of the armature taken along line aa. In the present embodiment, the same reference numerals are given to the same members and arrangements as in the above-described embodiments and examples, and the description thereof is omitted. Further, in this embodiment, the core and the insulator are described in the same manner as shown in FIG. 6, but the present invention is not limited to this, and is applicable to the examples of FIGS. 4 and 5 and FIGS. 9 to 13 described later. It can be done.
As shown in FIGS. 4 and 5, the insulator 30 according to the present embodiment has the same shape as the inner surface of the slot 23. An inner guide wall 61 (61a to 61j) having an outer surface substantially along the winding line on the inner peripheral side of the core is formed across the teeth 21 and a part of the teeth 21 on the end surface in the axial direction of the insulator 30. Yes.

That is, as shown in FIGS. 7 and 8, the inner guide walls 61 (61 a to 61 j) are formed so as to regulate the core inner portions of the wound windings 25 a to 25 e. The inner guide walls 61 (61a to 61j) guide the windings wound between the slots. For example, the winding lines of the two windings (25a, 25a) that are wound first. The inner guide walls 61a and 61f are formed along the line.
The inner guide walls 61b and 61g are formed along the winding lines of two windings (25b and 25b). The windings 25b and 25b are connected to the inner side surfaces 42b and 42g and the inner guide walls 61b and 61g. The windings 25c and 25c are guided to the inner side surfaces 42c and 42h and the inner guide walls 61c and 61h, and the windings 25d and 25d are part of the inner side surfaces 42d and 42e, part of 42i and 42j and the inner guide wall. The windings 25e and 25e are guided by the inner surfaces 42e and 42f, 42j and 42a and the inner guide walls 61e and 61j.
As described above, the windings 25a to 25e wound between the slots are wound along the inner side surface 42 of the outer guide wall 41 and the outer peripheral surface (outer surface substantially along the winding line) of the inner guide wall 61. Turned.

In the present embodiment, the shaft-side bottom surface of the slot located between the first windings wound first is provided with a bottom portion substantially along the line on the outer peripheral side of the core of the first winding. In the armature in which the winding is wound in the slot, it is possible to prevent a space from being generated on the shaft side of the slot between the first windings, and the position and state of the winding are unstable due to this space. Can be prevented.
An outer guide wall having an inner surface substantially along the outer peripheral line of the core is formed on the end surface in the axial direction of the insulator, and an inner guide wall having an outer surface substantially along the winding line on the inner peripheral side of the core is formed at the same time. Because it is formed, it is wound along the outer peripheral surface of the inner guide wall (outer surface substantially along the winding line), so that the end surface side also has inner and outer sides in addition to the winding guide in the core slot. Therefore, the winding can be wound within a predetermined range, and the winding position that causes the unbalance can be more reliably stabilized.

Further, as shown in FIG. 4, the insulator 30 includes the recesses 34a and 34b. However, as shown in FIG. 9, the insulator 30 does not include the recesses 34a and 34b, and the bottom surface of the insulator 30 in the slots 23b and 23g It may be formed at a position retracted to the outer peripheral side of the core 20 from other slots.
In the example of FIG. 9, as shown in FIG. 10, in the slots 23b and 23g located between the first windings 25a wound first, the bottom surface of the insulator 30 on the through hole 24 side is more than the other slots. At a position retracted toward the outer periphery side of the core 20, the first winding 25 a is formed so as to substantially follow the line on the outer periphery side of the core 20. Therefore, the first layer winding 25b in the slots 23b and 23g comes into contact with the bottom surface of the insulator 30 in the slots 23b and 23g. Therefore, in all the slots 23a to 23j, the windings 25a to 25e are in contact with the bottom surface of the slots 23a to 23j on the side of the through hole 24 of the insulator 30, and therefore, between the first layer windings 25a to 25c and the bottom surface of the slot. A space is not generated and the position and state of the winding do not become unstable, and the rotation balance of the armature 12 can be improved.
Further, in the example of FIG. 9, as shown in FIG. 11, the core 20 is formed in a modified slot shape in which the bottom surfaces of the slots 23 b and 23 g of the core 20 itself are formed at positions where the bottom surface of the core 20 recedes to the outer peripheral side of the core 20. You may form as.

Also, as shown in FIG. 12, the core 20 itself is formed with a bottom surface on the through hole 24 side of the slots 23b, 23g located between the first windings 25a formed with the recesses 26a and the first winding 25a. It may be configured as a variant slot formed so as to be substantially along the line on the outer periphery side of the core 20 of the first winding 25a at a position retracted to the outer periphery side of the core 20 from the other slots.
As shown in FIGS. 12 and 13, the recess 26 a is formed on the side surface of each of the slots 23 a to 23 j at a place where the windings 25 a to 25 c are wound as the first layer close to the through hole 24. It is comprised so that it may dent toward the inner side of the lines 25a-25c. A part of the first layer windings 25a to 25c is accommodated in the recess 26a. The core 20 of FIG. 12 is configured point-symmetrically with the through hole 24 as an axis.
In this case, by forming the bottom surfaces of the slots 23b and 23g of the core 20 so as to recede toward the outer periphery of the core, the relative amount of the slots filled with the slots 23b and 23g can be assigned to the recess 26a. It is possible to reduce the rotational imbalance as a whole.
Furthermore, in the example of FIG. 12, since the concave portion 26a of the core 20 is notched, the space factor of the winding is improved, and the motor efficiency can be improved.

  In each of the above examples, as shown in FIG. 5, all slots except for the two windings (25a, 25a) that are initially wound between the slots by the inner surface 42 shown in each example. At least part of the windings (25b to 25e) wound between them is formed so as to be wound along the inclination direction of the inner surface 42. Therefore, in addition to the winding guide in the core slot, a wall serving as a guide is provided on the end face side, and the winding position that causes unbalance can be further stabilized.

  Further, in each of the above examples, as shown in FIGS. 7 and 8, by providing the outer guide wall 41 and the inner guide wall 61, the windings 25a to 25e wound between the slots can be It can be configured to be wound along the inner side surface 42 of 41 and the outer peripheral surface of the inner guide wall 61 (outer surface substantially along the winding line). Therefore, when the outer guide wall 41 and the inner guide wall 61 are provided, in addition to the winding guide in the core slot, the inner and outer guide walls are also provided on the end face side, and the winding is performed within a predetermined range. Can be wound, and the winding position that causes unbalance can be more reliably stabilized.

FIGS. 14 to 19 show other embodiments, FIG. 14 is an explanatory view of a preferable winding state, FIG. 15 is an explanatory view of a core and an insulator of a further embodiment, and FIG. -D is a schematic cross-sectional view, FIG. 17 is an explanatory view of a winding track during winding, FIG. 18 is a schematic cross-sectional explanatory view of the track in OD of FIG. 17, and FIG. 19 is an embodiment in FIG. It is explanatory drawing of the winding state formed by these.
In this embodiment, in each above-mentioned embodiment, it applies to what has the outer side guide wall 41. FIG. That is, on the shaft side end surface of the outer guide wall 41, an inclined surface 80 (shaded portion shown in FIG. 19) whose height gradually decreases toward the shaft side that guides the wound winding wire 25 to the shaft side is formed. It is characterized by being.

  The winding 25 should be in a preferable winding state as shown in FIG. 14, but in order to form such a winding state, the variable former 71 of the winding winding device can be moved up and down. However, it is not preferable because the equipment mechanism is complicated, the cycle time is increased, and the cost is increased. Although it is conceivable to suppress the variation in the thickness of the core (laminated core) 50, the variation in the thickness of the laminated core 50 is mainly caused by the variation in the material of the core, and the variation is small. The use of materials is an inevitable increase in cost and is not a practical solution.

  In each of the embodiments described above, the insulator 30 corresponds to the insulator 30 by the outer guide wall 41 and the inner guide wall 61 as described above. In this embodiment, the above-described embodiments are further improved. As shown in FIGS. 15 and 16, the winding 25 to be wound is guided to the shaft side on the shaft side end surface of the outer guide wall 41. An inclined surface 80 whose height gradually decreases toward the shaft side is formed. The inclination angle of the inclined surface 80 is an angle at which the winding 25 does not stop at the inclined surface 80, and is preferably an angle of 45 degrees or more. In addition, the inclination direction of the inclined surface 80 is preferably inclined toward the center of the shaft. The inclined surface 80 serves as a guide for the winding 25 and allows the winding 25 to slide toward the shaft. 15 and 17, the formation range of the inclined surface 80 is indicated by hatching in order to emphasize the position of the inclined surface 80.

For this reason, the winding enters the winding 25 deviated from the shaft side, that is, between the variable former 71 and the core upper portion 51 or between the variable former 71 and the outer guide wall 41 (in short, the point shown in FIG. 18). Even from point A to point B), as shown in FIG. 18, it is possible to guide to the position of a predetermined target point C on the inclined surface 80. In this way, the winding 25 is guided to the shaft side by the inclined surface 80, and the winding 25 can be wound at a predetermined position.

As described above, according to the present embodiment, the orbit of the winding 25 when it is wound by the flyer method is originally positioned so that the winding 25 is located on the shaft side of the shaft 13 from the line X. That is, the winding 25 is pulled in the direction of the flyer 72 due to the tension in the winding, and the clearance between the variable former 71 and the upper part of the core 50 (stacked core upper part) 51 and the upper part of the variable former 71 and the outer guide wall 41 ( Even if the winding 25 enters the gap 74, the inclined surface 80 as a guide is formed on the end surface portion (shaft 13 side) of the outer guide wall 41, so that the winding 25 dropped to the point B can be replaced with the inclined surface 80. It can be led to the target point C by sliding.
Therefore, as shown in FIG. 19, not only when the outer guide wall 41 is not provided, but also when the outer guide wall 41 is formed as shown in FIG. Even when the winding 25 enters, a preferable winding state can be secured.

As described above, according to the present embodiment, even if the gap between the position of the variable former 71 and the core 50 is slightly increased, the winding can be reliably wound and wound at a predetermined position. Therefore, even if the position of the variable former 71 is separated from the core 50, the winding can be wound at a point aimed at the winding winding, and even if there is some fluctuation during the operation of the winding winding device, it is uniform. A winding structure can be obtained.

It is sectional drawing of the motor which concerns on one Embodiment of this invention. It is a perspective view of the armature of FIG. It is an isometric view explanatory drawing which shows the coupling | bonding of the core and insulator which concern on one Embodiment of this invention. It is a fragmentary sectional view by the aa line of a core and an insulator. It is a fragmentary sectional view by the aa line of an armature. It is the fragmentary sectional view by the aa line of the core and insulator which concern on another example. It is a fragmentary sectional view by the aa line of the core and insulator which concern on another embodiment. It is a fragmentary sectional view by the aa line of an armature. It is the fragmentary sectional view by the aa line of the core and insulator which concern on another example. It is the fragmentary sectional view by the aa line of the armature which concerns on another example. It is the fragmentary sectional view by the aa line of the core and insulator which concern on another example. It is a fragmentary sectional view by the aa line of the core concerning another example, and an insulator. It is a fragmentary sectional view by the aa line of the armature concerning another example. It is explanatory drawing of a preferable coil | winding state. It is explanatory drawing of the core and insulator of further embodiment. It is a schematic sectional drawing in OD of FIG. It is explanatory drawing of the track | orbit of a coil | winding at the time of winding of a coil | winding. FIG. 18 is a schematic cross-sectional explanatory diagram of a track in OD of FIG. 17. It is explanatory drawing of the winding state formed by embodiment in FIG. It is explanatory drawing of the armature which concerns on a prior art example. It is explanatory drawing of the winding state in a prior art example. It is explanatory drawing which shows the track | orbit of a line when it winds with a flyer system. It is explanatory drawing by the partial cross section of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Motor, 11 ... Stator, 12 ... Armature, 13 ... Shaft, 14, 15 ... Bearing part, 16 ... Brush device, 17 ... Housing, 20 ... Core, 21 ... Teeth, 22 ... Teeth connecting part, 23, 23a -23j slot, 24 through hole 25, 25a-25e winding, 25a first winding, 25b second winding, 25e fifth winding, 26a, 26b, 34a, 34b recess, 34c ... Guide, 30 ... Insulator, 31 ... Winding insulation part, 32 ... Shaft insulation part, 33 ... Side face part, 40 ... Commutator, 41 (41a to 41j) ... Outer guide wall, 42 (42a to 42j) ... Inside face , 43 .. Outer side surface, 45 .. collar part, 50... Core, 51 .. upper part of core (laminated core upper part), 53, 53b, 53g... Slot, 55 .. winding, 55a. line, 5e ‥ windings, 56 ‥ space, 61 (61a~61j) ‥ inner guide walls, 70 ‥ winding device, 71 ‥ variable former, 72 ‥ fryer, 74 ‥ clearance, 80 ‥ inclined surface

Claims (16)

A motor armature comprising a shaft, a core having a plurality of slots that are externally fitted to the shaft, and a plurality of windings wound between the slots via an insulator that covers the slots,
The plurality of windings are wound between a pair of slots spaced at least one or more of the slots, respectively, and are sequentially wound from two locations facing each other in the radial direction around the shaft. ,
An outer guide wall having an inner surface substantially along a line on the outer peripheral side of the core is formed on the axial end surface of the insulator ,
The outer guide wall has at least a part of the windings wound between all the slots in the direction of inclination of the inner peripheral surface except for two windings wound first between the slots. armature and said that you guide to winding along. A motor armature comprising a shaft, a core having a plurality of slots that are externally fitted to the shaft, and a plurality of windings wound between the slots via an insulator that covers the slots,
The plurality of windings are wound between a pair of slots spaced at least one or more of the slots, respectively, and are sequentially wound from two locations facing each other in the radial direction around the shaft. ,
The shaft-side bottom surface of the slot located between the first windings wound first comprises a bottom portion substantially along a line on the outer peripheral side of the core of the first winding,
In all the slots, the shaft side end of the winding is in contact with the shaft side bottom surface of each slot,
An outer guide wall having an inner surface substantially along a line on the outer peripheral side of the core is formed on the axial end surface of the insulator ,
The outer guide wall has at least a part of the windings wound between all the slots in the direction of inclination of the inner peripheral surface except for two windings wound first between the slots. armature and said that you guide to winding along. A motor armature comprising a shaft, a core having a plurality of slots that are externally fitted to the shaft, and a plurality of windings wound between the slots via an insulator that covers the slots,
The plurality of windings are wound between a pair of slots spaced at least one or more of the slots, respectively, and are sequentially wound from two locations facing each other in the radial direction around the shaft. ,
An outer guide wall having an inner surface substantially along the line on the outer periphery side of the core and an inner guide wall having an outer surface substantially along the winding line on the inner periphery side of the core are formed on the end surface in the axial direction of the insulator. And
The outer guide wall has at least a portion of the windings wound between all the slots in the direction of inclination of the inner peripheral surface except for two windings wound first between the slots. armature and said that you guide to winding along. A motor armature comprising a shaft, a core having a plurality of slots that are externally fitted to the shaft, and a plurality of windings wound between the slots via an insulator that covers the slots,
The plurality of windings are wound between a pair of slots spaced at least one or more of the slots, respectively, and are sequentially wound from two locations facing each other in the radial direction around the shaft. ,
The shaft-side bottom surface of the slot located between the first windings wound first comprises a bottom portion substantially along a line on the outer peripheral side of the core of the first winding,
In all the slots, the shaft side end of the winding is in contact with the shaft side bottom surface of each slot,
On the axial end surface of the insulator, an outer guide wall having an inner surface substantially along the line on the outer periphery side of the core and an inner guide wall having an outer surface substantially along the winding line on the inner periphery side of the core are formed. and,
The outer guide wall has at least a portion of the windings wound between all the slots in the direction of inclination of the inner peripheral surface except for two windings wound first between the slots. armature and said that you guide to winding along. A motor armature comprising a shaft, a core having a plurality of slots that are externally fitted to the shaft, and a plurality of windings wound between the slots via an insulator that covers the slots,
The plurality of windings are wound between a pair of slots spaced at least one or more of the slots, respectively, and are sequentially wound from two locations facing each other in the radial direction around the shaft. ,
The shaft side bottom surface of the slot located between the first windings wound first is the winding of all the windings previously wound across the slot located between the first windings, Formed on a substantially line on the outer peripheral side of the core or on the outer peripheral side of the core from the line,
In all the slots, the shaft side end of the winding is in contact with the shaft side bottom surface of each slot,
An outer guide wall having an inner surface substantially along a line on the outer peripheral side of the core is formed on the axial end surface of the insulator ,
The outer guide wall has at least a part of the windings wound between all the slots in the direction of inclination of the inner peripheral surface except for two windings wound first between the slots. armature and said that you guide to winding along. A motor armature comprising a shaft, a core having a plurality of slots that are externally fitted to the shaft, and a plurality of windings wound between the slots via an insulator that covers the slots,
The plurality of windings are wound between a pair of slots spaced at least one or more of the slots, respectively, and are sequentially wound from two locations facing each other in the radial direction around the shaft. ,
The shaft side bottom surface of the slot located between the first windings wound first is the winding of all the windings previously wound across the slot located between the first windings, Formed on a substantially line on the outer peripheral side of the core or on the outer peripheral side of the core from the line,
In all the slots, the shaft side end of the winding is in contact with the shaft side bottom surface of each slot,
On the axial end surface of the insulator, an outer guide wall having an inner surface substantially along the line on the outer periphery side of the core and an inner guide wall having an outer surface substantially along the winding line on the inner periphery side of the core are formed. and,
The outer guide wall has at least a portion of the windings wound between all the slots in the direction of inclination of the inner peripheral surface except for two windings wound first between the slots. armature and said that you guide to winding along. Winding wound around between all slots wound around between the slots, any one of claims 3, 4 and 6, characterized in that it includes a portion wound around along the guide wall Armature according to item. The armature according to any one of claims 1 to 6 , wherein a last winding wound between the slots is wound along the guide wall. On the side surfaces of the pair of slots around which the first winding wound first is wound , recesses are formed on the shaft side so as to substantially face each other,
Wherein the recess, the armature according to any one of claims 1 to 6, wherein a part of said first winding is accommodated. On the side surfaces of the pair of slots where the second winding is wound next to the first winding wound first , recesses are formed on the shaft side so as to be substantially opposed to each other,
The armature according to any one of claims 1 to 6 , wherein a part of the second winding is accommodated in the recess. In each of the slots, the first-layer winding on the shaft side and the second-layer winding wound around the core outer periphery of the first-layer winding are laminated in the radial direction,
On the side surface of each slot, a recess is formed at the winding location of the first layer winding, the recess being recessed toward the winding location of the other slot on which the first layer winding is bridged. ,
The armature according to any one of claims 1 to 6 , wherein a part of the winding of the first layer is accommodated in the concave portion. In each of the slots, the first-layer winding on the shaft side and the second-layer winding wound around the core outer periphery of the first-layer winding are laminated in the radial direction,
A side surface of each slot is recessed toward the winding position of the other slot on which the second layer winding is bridged, and the second layer winding and the lower layer of the winding are the first layer. A recess extending over the thickness of one layer of winding is formed,
The armature according to any one of claims 1 to 6 , wherein a part of the winding of the first layer and the second layer is accommodated in the recess. On the outer peripheral side of the core of the recess, a guide that is formed obliquely with respect to the side surface of the slot and guides the winding of the second layer into the recess is formed.
The winding of the second layer, in the core outer peripheral side, the armature of claim 1 2, characterized in that in contact with the guide. The bottom of the slot located between the first winding which is first wound, the insulator only, or any one of claims 1 to 6, characterized in that it is composed of the insulator and the core Armature as described in. The shaft-side end surface of the outer guide wall is formed with an inclined surface whose height gradually decreases toward the shaft side that guides a wound winding to the shaft side. Item 9. The armature according to any one of Items 1, 2, 3 , 4 , 6 , 7 , and 8 . Motor, characterized in that it comprises the armature according to any one of claims 1 to 1 5.

Images