JP2013074725A - Resolver stator structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a resolver stator structure that is improved in assembly operability by improving insertion properties in assembling of a stator of a resolver to a rotary electric machine.SOLUTION: A resolver stator structure includes an annular stator core 3 having a plurality of teeth 3a projecting radially inward, a pair of insulating members 4, 5 having teeth insulation parts 4b, 5b insulating respective teeth 3a inside the annular parts 4a, 5a, and holding the stator core 3 from both sides, and a stator coil 6 wound around the respective teeth 3a via teeth insulation parts 4b, 5b. The insulation member 5 of the pair of insulation members 4, 5 which is on an inner side of a rotary electric machine when incorporated in the rotary electric machine is provided with an insertion guide part 5c, which has an inclined surface that inclines to an inner-diameter side as it separates from a contact surface with the stator core 3 in the axial direction of the stator coil 3, on an outer-diameter side of the annular part 5a.

Description

  The present invention relates to a rotation detector (hereinafter referred to as a resolver) that detects rotation of a rotating electrical machine, and more particularly to a stator structure thereof.

  As a conventional resolver stator structure, for example, a stator body having an annular shape and having a plurality of magnetic poles projecting inward, a pair of insulating members provided on both end faces of the stator body, and the insulation thereof A stator winding wound around the magnetic pole of the stator body via a member, and one insulating member has a connector portion having a connector pin protruding radially outward and formed integrally with the insulating member. The connector portion is known to be separated from the stator body in an overhang shape via an inclined surface and a space portion. With this configuration, a sufficient mounting space can be secured when the resolver is incorporated into a motor or the like, and the stator body can be reliably and easily incorporated (see, for example, Patent Document 1).

JP 2003-344107 A (page 2-3, FIG. 1-2)

  The resolver stator portion needs to be secured with a high degree of coaxiality to the rotating electrical machine to be detected. For this reason, there is a case where the outer peripheral side of the stator body is fitted and assembled to a bracket or the like of the rotating electrical machine. However, in the conventional resolver stator structure as shown in Patent Document 1, the stator portion is made of the rotating electrical machine. If it is tried to be fitted to a bracket or the like, there is a problem that the insertability is poor and a long time is required for the work.

  The present invention has been made to solve the above-described problems, and provides a resolver stator structure in which the insertability when the resolver stator is assembled to a rotating electric machine is improved and the assembly workability is improved. With the goal.

  The resolver stator structure according to the present invention includes a pair of insulations having an annular stator core having a plurality of teeth projecting radially inward and a teeth insulating part for insulating the teeth inside the annular part and sandwiching the stator core from both sides. A member and a stator coil wound around the teeth via the teeth insulating portion, and the insulating member which is the inner side of the rotating electrical machine when incorporated in the rotating electrical machine among the pair of insulating members has an annular portion An insertion guide portion having an inclined surface that inclines toward the inner diameter side as it moves away from the contact surface with the stator core in the axial direction of the stator core is formed on the outer diameter side.

  Further, of the pair of insulating members, the insulating member that is the inner side of the rotating electric machine when incorporated in the rotating electric machine is separated from the contact surface with the stator core in the axial direction of the stator core on the inner diameter side of the tooth insulating portion. An inner guide portion having an inclined surface inclined to the radial side is formed.

  According to the resolver stator structure of the present invention, the insulating member that is on the inner side of the rotating electrical machine when incorporated in the rotating electrical machine is separated from the contact surface with the stator core in the axial direction of the stator core on the outer diameter side of the annular portion. Since the insertion guide part with an inclined surface that slopes to the inner diameter side is provided, when the resolver stator is assembled to the bracket of the rotating electrical machine, the insertion guide part is invited to the mounting hole of the bracket, making it easier to insert the resolver. Work becomes easy. For this reason, the production efficiency can be improved.

  In addition, the insulating member that becomes the inner side of the rotating electrical machine when incorporated in the rotating electrical machine has an inclined surface on the inner diameter side of the teeth insulating portion that is inclined in the axial direction of the stator core away from the contact surface with the stator core, Since the inner guide part having the inner diameter is provided, the interference between the resolver rotor and the teeth of the resolver stator core is eliminated during the incorporation into the rotating electric machine, and the insertion becomes easy, and the assemblability is improved.

It is a front view which shows the resolver using the resolver stator structure by Embodiment 1 of this invention. It is side surface sectional drawing of FIG. It is sectional drawing seen from the arrow AA of FIG. It is side surface sectional drawing which shows the state which assembled | attached the resolver stator structure by Embodiment 1 of this invention to the bracket of a rotary electric machine. It is a rear view which shows the resolver stator structure by Embodiment 2 of this invention. It is a rear view which shows the other example of the resolver stator structure by Embodiment 2 of this invention. It is a rear view which shows the resolver stator structure by Embodiment 3 of this invention. It is side surface sectional drawing seen from the arrow BB of FIG. It is a rear view which shows the resolver stator structure by Embodiment 4 of this invention. It is side surface sectional drawing seen from the arrow CC of FIG. It is a rear view which shows the other example of the resolver stator structure by Embodiment 4 of this invention. It is side surface sectional drawing seen from the arrow DD of FIG. It is side surface sectional drawing which shows the state which attached the resolver stator structure by Embodiment 5 of this invention to the rear bracket of the rotary electric machine. FIG. 14 is a side cross-sectional view showing a state before the driver assembly is assembled in the rear bracket of the rotating electric machine of FIG. 13. It is a rear view of the rotary electric machine of FIG.

Embodiment 1 FIG.
Embodiment 1 of the present invention will be described below with reference to the drawings. 1 is a front view of a resolver using the resolver stator structure according to the first embodiment, FIG. 2 is a side cross-sectional view of FIG. 1, and FIG. 3 is a cross-sectional view seen from an arrow AA in FIG. However, the resolver rotor is omitted. FIG. 4 is a side cross-sectional view showing a state where the resolver using the resolver stator structure of the first embodiment is assembled to a bracket of a rotating electrical machine.

First, the resolver structure will be described with reference to FIGS. The resolver includes a resolver rotor 1 configured by laminating a plurality of silicon steel plates, and a resolver stator 2 that is coaxial with the resolver rotor 1 and disposed on the outer peripheral side of the resolver rotor 1.
The resolver stator 2 includes a laminated body of a plurality of thin silicon steel plates, and includes an annular stator core 3 having a plurality of teeth 3a projecting radially inward. A pair of insulating members 4 and 5 made of a resin material are provided so as to be sandwiched from both surfaces of the stator core 3. The insulating members 4 and 5 include annular portions 4a and 5a sandwiching the annular portion of the stator core 3, and teeth insulating portions 4b and 5b that are inside and correspond to the teeth 3a and cover and insulate the teeth 3a. ing. A stator coil 6 is wound around each of the teeth 3a via teeth insulating portions 4b and 5b.

  Of the pair of insulating members 4 and 5, the insulating member 4 becomes the outside of the rotating electrical machine when incorporated in the rotating electrical machine, and the insulating member 5 becomes the inside side, that is, the side inserted into the bracket. The insulating member 4 on the outer side has a part of the annular portion 4a extending in two radially outward directions, one of which is a terminal holding portion 4c. A terminal 7 is insert-molded in the terminal holding portion 4c, and a lead wire 6a drawn from the stator coil 6 is connected to a terminal pin 7a of the terminal 7 as shown in FIG.

As shown in FIG. 2, the insulating member 5 side is arranged on the outer diameter side of the annular portion 5 a of the insulating member 5 from the contact surface with the stator core 3 toward the axial direction of the central axis of the stator core 3, that is, in the direction parallel to the axis. An insertion guide portion 5c having an inclined surface that inclines toward the inner diameter side as it moves away is formed over the entire circumference, and this portion is a feature of the present invention. The outer diameter of the insertion guide portion 5 c on the contact surface side with the stator core 3 is substantially the same as the outer diameter of the stator core 3.
Of the above description, the part excluding the resolver rotor 1 is the resolver stator of the present application. In addition, the shape of the terminal holding part 4c etc. by the side of the insulating member 4 shows an example, and is not limited to a figure.

Next, a state where the resolver is assembled to the rotating electrical machine will be described with reference to FIG. The rotating electrical machine is a motor, for example, and a case where a resolver is assembled to the rear bracket 11 will be described as an example.
The resolver rotor 1 described above is attached coaxially with the rotary shaft 12 to the end of the motor rotary shaft 12 on the rear bracket 11 side, and the resolver stator 2 has the teeth 3a facing the resolver rotor 1 outer peripheral side. From the outside of the rear bracket 11, it is attached coaxially with the rotary shaft 12. For this reason, a recess 11 a having an inner diameter substantially the same as the outer diameter of the stator core 3 is formed coaxially with the rotary shaft 12 so that the stator core 3 of the resolver stator 2 is fitted in the center portion of the rear bracket 11.

As described above, among the insulating members 4 and 5 provided with the stator core 3 interposed therebetween, the insulating member 5 on the side inserted into the recess 11a of the rear bracket 11 has the insertion guide portion 5c on the outer peripheral surface thereof. Thus, when the resolver stator 2 is inserted into the recess 11a, it is guided by the insertion guide portion 5c and can be easily inserted.
In the state of FIG. 4 in which the resolver is incorporated in the motor, the outer peripheral side of the resolver rotor 1 and the stator coil 6 are wound so that the teeth 3a face each other with a minute gap. When the rotating shaft 12 of the motor rotates, the gap permeance changes between the air gap between the resolver rotor 1 and the resolver stator 2 due to the rotation, so that the motor is fixed to the rotating shaft 12 based on the output voltage generated in the resolver stator 2. It is possible to detect the magnetic pole position of a rotor (not shown).

As described above, according to the resolver stator structure of the first embodiment, a stator core having an annular stator core having a plurality of teeth protruding inward in the radial direction and a teeth insulating portion that insulates the teeth inside the annular portion. And a stator coil wound around the teeth via the teeth insulating portion, and when the member is incorporated in the rotating electric machine, the inner side of the rotating electric machine is provided. The insulating member is formed with an insertion guide portion on the outer diameter side of the annular portion having an inclined surface that inclines toward the inner diameter side as it moves away from the contact surface with the stator core in the axial direction of the stator core. When assembled to the bracket of the electric machine, the insertion guide portion is invited to the mounting hole of the bracket, so that the resolver can be easily inserted and the assembling work is facilitated. For this reason, the production efficiency can be improved.
Further, since the fitting tolerance between the outer diameter of the resolver core and the fitting hole of the rear bracket can be reduced, the mounting accuracy of the resolver is improved, and the angle detection accuracy is improved.

Embodiment 2. FIG.
FIG. 5 is a rear view showing a resolver stator structure according to the second embodiment. Although FIG. 1 of Embodiment 1 is a front view, FIG. 5 corresponds to that seen from the back side of FIG. The same components as those of the first embodiment are denoted by the same reference numerals, description thereof will be omitted, and differences will be mainly described.
The difference is the shape of the insertion guide portion provided on the insulating member. In the first embodiment, the insertion guide portion 5c is formed on the entire outer diameter side of the annular portion 5a of the insulating member 5. However, in the present embodiment, the insertion guide portion 5c is partially formed.

As shown in FIG. 5, the insulating member 5 of the present embodiment is partially provided with an insertion guide portion 5d. The width of the insertion guide portion 5d is approximately the same as the width of the tooth 3a, and at least three portions are provided substantially equally in the circumferential direction of the annular portion 5a of the insulating member 5. The cross-sectional shape seen from the side surface of the insertion guide portion 5d is the same as that of the insertion guide portion 5c shown in FIG. That is, the largest outer diameter side in contact with the surface of the stator coil 3 has an inclined surface that inclines toward the inner diameter side as the distance from the contact surface in the axial direction of the stator core 3 substantially matches the outer diameter of the stator coil 3. Yes.
By providing the insertion guide portion 5d partially, the annular portion of the stator core 3 is exposed at a portion other than the insertion guide portion 5d, and this surface can be used as a contact surface for fixing to a jig at the time of assembly, for example. .

Next, a modification of FIG. 5 will be described. FIG. 6 is a modification of FIG. 5 and is a rear view of the resolver stator as in FIG.
The difference from FIG. 5 is the number of insertion guide portions 5 d provided in the insulating member 5. As shown in FIG. 6, the number of insertion guide portions 5d is the same as the number of teeth 3a of the stator core 3, and is provided at a position corresponding to the teeth 3a. The shape of each insertion guide portion 5d is the same as that in FIG.

As described above, according to the resolver stator structure of the second embodiment, the insertion guide portion is partially provided in the outer circumferential direction of the annular portion, and three or more locations are arranged at substantially equal intervals. The contact surface can be secured, and can be securely fixed by pressurization when fixing to a jig.
Moreover, since the insertion guide part is partially provided, the material cost of an insulating member can be reduced and cost can be reduced.
Furthermore, since the reinforcing rib can be provided at the mounting portion of the bracket to which the resolver stator is assembled, avoiding the position of the insertion guide portion, the bracket strength can be increased.

  Further, since the insertion guide portion is arranged in the same number as the teeth at the position corresponding to the teeth of the stator core, there is no need to worry about the position of the insertion guide portion when the insulation member is assembled to the stator core. Attaching is easy.

Embodiment 3 FIG.
FIG. 7 is a rear view showing the resolver stator structure according to the third embodiment, and FIG. 8 is a side sectional view as seen from arrows BB in FIG. The same components as those in the second embodiment are denoted by the same reference numerals, description thereof is omitted, and differences will be mainly described. The difference is the shape of the insertion guide portion provided on the insulating member.

As shown in FIG. 8, the outer diameter of the annular portion 5 a on the insulating member 5 side where the insertion guide portion is formed is made smaller than the outer diameter of the stator core 3, and the insertion guide portion 5 e is in contact with the stator core 3. The surface side is substantially the same as the outer diameter of the stator core 3, has an inclined surface that inclines toward the inner diameter side away from the contact surface in the axial direction of the stator core 3. It is formed so as to protrude further in the axial direction than the surface of the ring portion 5a. That is, the axial thickness of the insertion guide portion 5e is made thicker than the axial thickness of the annular portion 5a. The necessary thickness of the annular portion 5 a is inevitably determined from the outer diameter of the stator coil 6.
Similar to the second embodiment, the number of the insertion guide portions 5e is partially provided in the outer peripheral direction (six in FIG. 6), and it is sufficient that there are at least three, or the same number as the teeth 3a. good.

  As described above, according to the resolver stator structure of the third embodiment, the axial tip portion of the insertion guide portion protrudes further in the axial direction than the surface of the annular portion where the insertion guide portion is formed. When assembled to a bracket or the like of a rotating electrical machine, the guide is promptly guided at the tip of the insertion guide portion at the time of insertion, and the insertability is further improved as compared with the first and second embodiments.

Embodiment 4 FIG.
FIG. 9 is a rear view showing the resolver stator structure according to the fourth embodiment, and FIG. 10 is a side sectional view of FIG. 9 as viewed from the arrow CC. The same components as those of the first embodiment are denoted by the same reference numerals, description thereof is omitted, and differences will be mainly described. In the first to third embodiments, the insertion guide portion is provided on the outer peripheral side of the insulating member 5. However, in this embodiment, the guide portion is provided on the inner diameter side of the insulating member 5.

As shown in FIGS. 9 and 10, when the resolver is incorporated in the rotating electrical machine, the insulating member 5 which is the inner side of the rotating electrical machine has a dimension on the innermost diameter side of the tooth insulating portion 5b, that is, the side close to the axis, as shown in FIG. The inner guide portion 5f having an inclined surface that is substantially the same as the inner diameter d of the third tooth 3a and is inclined to the outer diameter side as it is away from the contact surface with the stator core 3 in the axial direction of the stator core 3. And formed integrally. Since the teeth insulating portion 5 b also serves as a winding frame for the stator coil 6, the axial protrusion dimension on the inner diameter side is a dimension that covers at least the outer diameter of the stator coil 6.
By providing the inner guide portion 5f on the inner diameter side of the insulating member 5 in this manner, the resolver rotor 1 and the teeth 3a of the resolver stator core 3 are not easily interfered with each other during assembly, and the production efficiency is improved.

Next, a modified example will be described with reference to FIGS. 11 and 12 correspond to FIGS. 9 and 10 described above. The difference from FIGS. 9 and 10 is the projection dimension in the axial direction of the inner guide portion.
In the case of FIGS. 9 and 10, the axial dimension of the inner guide portion 5f is adjusted to the size of the teeth insulating portion 5b necessary as a winding frame of the stator coil 6, but the inner guide portion 5g of FIGS. The tip in the axial direction is further protruded in a direction away from the contact surface with the stator core 3. That is, as shown in FIG. 12, the tip of the inner guide portion 5g protrudes in the axial direction by, for example, about several millimeters from the outer diameter of the stator coil 6. By adopting such a shape, the insertion operation is further facilitated without interference between the resolver rotor 1 and the teeth 3a of the stator core 3 during assembly.

  In addition, you may provide combining the insertion guide part demonstrated in Embodiment 1-3 and the inner side guide part of this Embodiment. If it does so, the assembly | attachment to a bracket will be made easy and the insertion operation will become easy without the interference of a resolver rotor.

  As described above, according to the resolver stator structure according to the fourth embodiment, an annular stator core having a plurality of teeth protruding inward in the radial direction, and a stator core having a teeth insulating portion for insulating the teeth inside the annular portion. A pair of insulating members sandwiched from both sides and a stator coil wound around the teeth via the tooth insulating portion, and among the pair of insulating members, insulation that becomes the inner side of the rotating electric machine when incorporated in the rotating electric machine In the member, an inner guide portion having an inclined surface that is inclined in the outer diameter side away from the contact surface with the stator core is formed on the inner diameter side of the tooth insulating portion, so when incorporated into the rotating electrical machine, There is no interference between the resolver rotor and the teeth of the resolver stator core, and the insertion becomes easy and the assemblability is improved.

In addition, since the tip end in the axial direction of the inner guide portion protrudes further in the axial direction than the tip end in the axial direction of the teeth insulating portion on which the inner guide portion is formed, the inner guide portion is quickly inserted into the rotating electrical machine. Insertion is further improved by guiding at the tip.
Further, interference between the resolver rotor and the teeth of the resolver stator core can be prevented, and the assembly can be performed safely without damaging the stator coil, thereby improving the reliability of the assembly.

Embodiment 5 FIG.
Next, a resolver stator structure according to Embodiment 5 will be described with reference to the drawings. FIG. 13 is a partial cross-sectional view showing a rear portion of a rotating electric machine assembled with the resolver stator structure of the fifth embodiment, and FIG. 14 shows a state before assembling the driver assembly of the rotating electric machine to the rear bracket of FIG. FIG. 15 is a rear view of the rotating electrical machine. However, the same components as those in the first to fourth embodiments are denoted by the same reference numerals, and description thereof is omitted. The resolver stator structure uses any one of the configurations described in the first to fourth embodiments or a combination thereof.

The rotary electric machine of FIG. 13 shows the case of a vehicular rotary electric machine, for example. A rotor 13 around which field windings are wound, a stator (not shown) disposed on the outer periphery thereof, a front bracket (not shown) serving as a case for housing the rotor 13 and the stator, and The rear bracket 11, an electronic module 14 including a circuit unit for supplying electric power, and a driver assembly 15 that controls the electronic module 14 are configured.
Hereinafter, the rear part will be described in more detail with reference to FIGS.

  Both ends of the rotating shaft 12 fixed to the center of the rotor 13 are rotatably supported by a rear bracket 11 and a front bracket (not shown) via bearings 16 respectively. Two slip rings 17 are assembled on the rear side of the rotating shaft 12. On the inner side of the rear bracket 11, a brush 18 that is in sliding contact with the slip ring 17 is provided by being held by a brush holder 18 a. The resolver rotor 1 is fixed to the rear end portion of the rotor 13.

  The electronic module 14 is accommodated with a circuit portion 14 a for supplying power to the inside of the electronic module 14 joined to the same plane of the heat sink 19, and cooling fins 19 a are provided on the back side of the heat sink 19. Since signal terminals are insert-molded in the circuit portion 14a and the signal terminals need to be connected to the control board 15d outside the rear bracket 11, the signal terminals distributed in the electronic module 14 are connected to the relay board. 20 and connected to the control board 15d side using the F connector 21. The case of the electronic module 14 is sealed with a resin 14b, and the electronic module 14 is configured by these.

  Next, the driver assembly 15 will be described with reference to FIG. First, the resolver stator 2 described in the first to fourth embodiments is integrally attached to the center portion of the driver case 15a by fitting or bonding. The signal line of the resolver stator 2 is connected to the terminal 15b insert-molded in the driver case 15a by welding or soldering. The cover 22 is closed from the rear side, which is the external side when it is assembled in the rotating electrical machine. Further, the control board 15d on which the microcomputer 15c for controlling the electronic module 14 is mounted is housed on the rear side of the cover 22 and connected to the terminal 15b and to the M connector 15e connected to the electronic module 14 side. Thereafter, the resin 15f is filled in the driver case 15a. These constitute the driver assembly 15.

The driver assembly 15 is attached to the rotating electrical machine by inserting the driver assembly 15 from the outside of the rear bracket 11 in the direction of the arrow. As a result, the M connector 15e formed integrally with the driver case 15a and the F connector 21 provided in the electronic module 14 are connected through the hole provided in the rear bracket 11 with the rear bracket 11 interposed therebetween. At the same time, the resolver stator 2 is inserted into the recess at the center of the rear bracket 11. After confirming the connection, the driver assembly 15 is fixed to the rear bracket 11 by bolting or the like.
This mounting work is performed in a state where the fitting hole of the rear bracket 11, particularly the fitting recess with the resolver stator 2 at the center, is hidden by the driver assembly 15 and cannot be seen. Since the insertion guide portion and / or the inner guide portion as described in the first to fourth embodiments are provided, the insertion can be easily performed.
The detailed configuration other than the part in which the resolver stator portion is incorporated in the driver case of the driver assembly is not limited to the figure.

  As described above, according to the resolver stator structure according to the fifth embodiment, the resolver stator structure described in the first to fourth embodiments is incorporated in the driver case of the driver assembly that controls the electronic module of the rotating electric machine. Since it is attached to the bracket, it can be easily inserted even if the fitting part of the rear bracket into which the resolver stator is inserted is not visible when mounting the driver assembly while being compact and integrated with the driver part. Becomes easier.

DESCRIPTION OF SYMBOLS 1 Resolver rotor 2 Resolver stator 3 Stator core 3a Teeth 4 Insulating member 4a Annular part 4b Teeth insulating part 4c Terminal holding part 5 Insulating member 5a Annular part 5b Teeth insulating part 5c, 5d, 5e Insertion guide part 5f, 5g Inner guide part 6 Stator coil 6a Lead wire 7 Terminal 7a Terminal pin 11 Rear bracket 11a Recess 12 Rotary shaft 13 Rotor 14 Electronic module 14a Circuit portion 14b Resin 15 Driver assembly 15a Driver case 15b Terminal 15c Microcomputer 15d Control board 15e M connector 15f Resin 16 Bearing 17 Slip ring 18 Brush 18a Brush holder 19 Heat sink 19a Cooling fin 20 Relay board 21 F connector 22 Cover

Claims (7)

An annular stator core having a plurality of teeth projecting radially inward;
A pair of insulating members having a teeth insulating portion for insulating the teeth inside an annular portion and sandwiching the stator core from both sides;
A stator coil wound around the teeth via the teeth insulating portion,
Of the pair of insulating members, the insulating member which is the inner side of the rotating electrical machine when incorporated in the rotating electrical machine has an axial direction from the contact surface with the stator core to the outer diameter side of the annular portion. The resolver stator structure is characterized in that an insertion guide portion having an inclined surface that is inclined toward the inner diameter side as the distance from the inner surface is increased. The resolver stator structure according to claim 1,
The resolver stator structure according to claim 1, wherein the insertion guide part is partially provided in an outer peripheral direction of the annular part, and three or more places are arranged at substantially equal intervals. The resolver stator structure according to claim 2,
The resolver stator structure is characterized in that the same number of insertion guide portions as the teeth are arranged at positions corresponding to the teeth. In the resolver stator structure according to claim 2 or claim 3,
The resolver stator structure according to claim 1, wherein a distal end portion of the insertion guide portion in the axial direction protrudes further in the axial direction than a surface of the annular portion on which the insertion guide portion is formed. An annular stator core having a plurality of teeth projecting radially inward;
A pair of insulating members having a teeth insulating portion for insulating the teeth inside an annular portion and sandwiching the stator core from both sides;
A stator coil wound around the teeth via the teeth insulating portion,
Of the pair of insulating members, the insulating member that is on the inner side of the rotating electrical machine when incorporated in the rotating electrical machine has an inner diameter side of the teeth insulating portion, from the contact surface with the stator core in the axial direction of the stator core. A resolver stator structure characterized in that an inner guide portion having an inclined surface that is inclined toward the outer diameter side is formed. In the resolver stator structure according to claim 5,
The resolver stator structure according to claim 1, wherein a tip portion of the inner guide portion in the axial direction protrudes further in the axial direction than a tip portion of the teeth insulating portion in which the inner guide portion is formed. In the resolver stator structure according to any one of claims 1 to 6,
The resolver stator structure is incorporated in a driver case of a driver assembly that controls an electronic module of a rotating electrical machine and attached to a bracket of the rotating electrical machine.

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