JP2021010218A - Stator structure and resolver - Google Patents

Abstract

To improve mountability to a rotary electric machine.SOLUTION: A stator structure includes: a stator core; an insulator; a plurality of coils; and a terminal block. The stator core has a plurality of teeth extending in one side of an annular body in a radial direction. The plurality of coils are formed by winding windings about the teeth. The terminal block has a plurality of terminals to which an end of the winding is tied. The terminal block has a first surface arranged on a main surface of the main body in an axial direction and a second surface provided with the plurality of terminals and arranged at a position on the other side from the first surface in the axial direction.SELECTED DRAWING: Figure 4

Description

The present invention relates to a stator structure and a resolver.

Conventionally, resolvers that detect the rotation angle of rotating electric machines such as motors and generators have been known. Such a resolver includes, for example, a stator core having a plurality of teeth extending inward in the radial direction of an annular body portion, a plurality of coils formed by winding windings around the teeth, and ends of the windings. It is provided with a terminal block in which a plurality of entwined terminals are arranged.

Japanese Unexamined Patent Publication No. 2017-189098

However, in the terminal block of the conventional resolver, since the terminal is provided on the flat portion of the annular main body, the size of the terminal protruding in the axial direction from the main surface of the stator core becomes large in the axial direction. , There is a risk of dimensional restrictions when attaching the resolver to the rotary electric machine.

The present invention has been made in view of the above, and an object of the present invention is to provide a stator structure and a resolver capable of improving the mountability to a rotary electric machine.

In order to solve the above-mentioned problems and achieve the object, the stator structure according to one aspect of the present invention includes a stator core, a coil, and a terminal block. The stator core has a plurality of teeth extending in one radial direction of the annular main body. The plurality of coils are formed by winding windings around the teeth. The terminal block has a plurality of terminals in which the ends of the windings are entwined. The terminal block has a first surface arranged on the main surface of the main body in the axial direction and a second surface provided with a plurality of terminals and arranged at a position on the other side in the axial direction from the first surface. Have.

According to one aspect of the present invention, the mountability to a rotary electric machine can be improved.

FIG. 1 is an exploded perspective view of the stator structure according to the embodiment. FIG. 2 is a plan view of the stator in FIG. 1 as viewed from one side in the axial direction. FIG. 3 is an enlarged plan view showing the terminal block in FIG. FIG. 4 is a cross-sectional view taken along the line AA in FIG. FIG. 5 is a perspective view showing a terminal block having a stator structure according to the embodiment. FIG. 6 is a plan view of the resolver according to the embodiment. FIG. 7 is a side view of the resolver according to the embodiment.

Hereinafter, the stator structure of the resolver according to the embodiment will be described with reference to the drawings. It should be noted that the embodiments described below do not limit the use of the stator structure and the resolver. In addition, it should be noted that the drawings are schematic, and the relationship between the dimensions of each element, the ratio of each element, and the like may differ from the reality. Further, there may be a portion where the relations and ratios of the dimensions of the drawings are different from each other.

(Structure of stator structure)
The configuration of the stator structure 1 according to the embodiment will be described with reference to FIGS. 1 to 5. As shown in FIG. 1, the stator structure 1 is obtained by attaching the coil cover 60 to the stator 1a.

FIG. 1 is an exploded perspective view of the stator structure 1 according to the embodiment. FIG. 2 is a plan view of the stator 1a in FIG. 1 as viewed from one side in the axial direction. FIG. 3 is an enlarged plan view showing the terminal block in FIG. FIG. 4 is a cross-sectional view taken along the line AA in FIG. FIG. 5 is a perspective view showing a terminal block 40 of the stator structure 1 according to the embodiment. Note that FIG. 5 shows a state after the first coil cover 70 is attached to the stator 1a and the tip of the pin 22 is crushed, but the coil cover 60 is omitted for convenience of explanation. Further, the winding 31 is shown in FIGS. 3 and 4, and is omitted in other drawings for convenience of explanation.

The stator structure 1 according to the embodiment includes a stator core 10, an insulator 20, a coil 30, a terminal block 40, a connector housing 50 (see FIG. 4), and a coil cover 60.

Hereinafter, the radial direction, the axial direction, and the circumferential direction of the stator core 10 will be defined and described. Here, the "radial direction" is a direction orthogonal to the rotation axis of the rotor 2 (see FIG. 6) rotating inside the stator core 10, and the "axial direction" is the axial direction of the rotation axis of the rotor 2. It is a direction that coincides, and the "circumferential direction" is a direction that coincides with the rotation direction of the rotor 2. In the stator structure 1 according to the embodiment, the axial direction and the vertical direction match, one side in the axial direction matches the upper side, and the other side in the axial direction matches the lower side.

The stator core 10 has a laminated structure in which a plurality of steel plates formed of a soft magnetic material such as an electromagnetic steel plate are laminated. The stator core 10 has a main body 11 and a plurality of teeth 12. The main body 11 is annular, and in the embodiment, it is annular. The main body 11 has a flat first main surface (main surface) 11a on one side in the axial direction and a flat second main surface 11b on the other side in the axial direction. Further, a plurality of (7 in this embodiment) elongated holes 13 are formed in the main body 11 of the stator core 10.

The elongated hole 13 can be used as an insertion hole for inserting a bolt for fixing the stator structure 1 to the housing of a rotary electric machine (not shown). The elongated hole 13 penetrates the main body 11 in the axial direction and is formed in an arc shape along the circumferential direction of the main body 11. The plurality of elongated holes 13 are arranged along the circumferential direction of the main body 11.

For example, the plurality of elongated holes 13 are arranged at equal angular intervals along the circumferential direction of the main body 11. The plurality of elongated holes 13 do not necessarily have to be arranged at equal angular intervals.

A plurality of (14 pieces in this embodiment) teeth 12 extend from the inner peripheral side of the main body portion 11 toward the center of the main body portion 11 (that is, in the radial direction). Further, a slot 14 which is a gap is formed between the adjacent teeth 12. The stator core 10 is formed by laminating a plurality of cores manufactured by pressing a steel plate such as an electromagnetic steel plate.

The insulator 20 is an insulating member, and is formed by, for example, injection molding of an insulating resin. The insulator 20 is formed by, for example, insert molding so that the stator core 10 is embedded therein, and covers the stator core 10 from both sides in the axial direction.

As shown in FIG. 2, a plurality of flanges 21 extending outward in the radial direction are provided on the upper surface side of the insulator 20. For example, in the embodiment, the insulator 20 is provided with six flanges 21. The number of flanges 21 provided on the insulator 20 is not limited to the embodiment, and may be any number.

The flange 21 has an upper surface substantially perpendicular to the axial direction, and a pin 22 is provided on the upper surface. The pin 22 extends on one side (for example, the upper side) in the axial direction and is, for example, cylindrical. The pin 22 is not limited to a columnar shape, and may have other shapes such as a prismatic shape.

Further, on the upper surface side (one side in the axial direction) of the insulator 20, a step (recess) 21b into which the tubular portion 72 of the first coil cover 70, which will be described later, fits is provided from the inside of the flange 21 to the outer peripheral edge of the insulator 20. (See Fig. 3). The step 21b provided on the outer peripheral edge of the insulator 20 is formed along the circumferential direction.

A plurality of recesses (not shown) recessed in the axial direction are formed on the lower surface side of the insulator 20, and pins 24 are provided on the bottom surface of the recesses. The pin 24 extends axially to the other side (eg, the lower side) and is, for example, cylindrical. The pin 24 is not limited to a columnar shape, and may have other shapes such as a prismatic shape.

Further, as shown in FIGS. 2 and 3, the insulator 20 is provided with a guide portion 25 at the root portion of the teeth 12, and a guide portion 26 is provided at a position adjacent to the slot 14. The guide portions 25 and 26 project to one side in the axial direction and function as guides for the crossover wire when the winding 31 constituting the coil 30 is wound.

As shown in FIGS. 3 and 4, the plurality of coils 30 are formed by winding a winding 31 around each of the plurality of teeth 12 via an insulator 20. The coil 30 is composed of an exciting winding and an output winding. Further, the output winding of the coil 30 is composed of a sin phase output winding that outputs a sin phase output signal and a cos phase output winding that outputs a cos phase output signal.

The terminal block 40 is formed on the upper surface side (one side in the axial direction) of the insulator 20 and extends radially outward from the insulator 20. The terminal block 40 is provided with a first surface 41 arranged on the first main surface 11a in the axial direction of the main body 11 of the stator core 10, and a plurality of (six in the embodiment) terminals 43, and the first surface 41 is provided. It has a second surface 42 that is arranged at a position on the other side in the axial direction. The second surface 42 is arranged inside the elongated hole 13 formed in the main body 11. That is, the second surface 42 is arranged between the first main surface 11a located on one side in the axial direction and the second main surface 11b located on the other side in the axial direction.

The terminal block 40 has an inclined surface 44 that connects the first surface 41 and the second surface 42 in the radial direction and is inclined with respect to the axial direction and the radial direction. The first surface 41 is located above the inclined surface 44, and the second surface 42 is located below the inclined surface 44. The inclined surface 44 is formed so as to cover an edge located inside the elongated hole 13 in the radial direction. The inclined surface 44 has a slit 45 extending in the radial direction in a part in the circumferential direction in a manner continuous with the second surface 42. The inclined surface 44 has a plurality of slits 45 (five in this embodiment). The slit 45 is arranged between one terminal 43 and the other terminal 43 that are adjacent to each other in the circumferential direction.

Further, the terminal block 40 has a second surface 42 as a bottom surface, and has a recess 47 composed of a wall portion 46 extending from the second surface 42 on one side in the axial direction and an inclined surface 44. Further, the plurality of terminals 43 are arranged inside the recess 47.

A guide portion 48 for guiding the path of the winding 31 forming the coil 30 is provided on the first surface 41. A plurality of guide portions 48 (six in this embodiment) are provided so as to correspond to the terminals 43.

The terminal 43 is a conductive member such as metal, and is formed in a crank shape. The terminal 43 has an entangled portion 43a that projects from the terminal block 40 to one side in the axial direction and stands upright on one end side. Then, the ends of the windings 31 constituting the corresponding coil 30 are entwined with the entwined portion 43a.

For example, the winding end of the exciting winding, the winding end of the exciting winding, the winding start of the sin phase output winding, and the winding end of the sin phase output winding are formed on the entwined portion 43a of the six terminals 43. , The winding start of the cos phase output winding and the winding end of the cos phase output winding are entwined, respectively.

Then, the winding 31 and the entwined portion 43a can be electrically connected by, for example, TIG (Tungsten Inert Gas) welding to the entangled portion 43a in which the ends of the winding 31 are entwined. ..

Further, the terminal 43 has a connecting portion 43b that projects from the inner wall portion 51 of the connector housing 50 to the other end side in the axial direction and stands upright. The connection portion 43b of each terminal 43 is located inside the connector housing 50 and is connected to an external connector.

As shown in FIG. 4, the connector housing 50 is formed on the lower surface side (the other side in the axial direction) of the insulator 20 and extends radially outward from the insulator 20. The connector housing 50 is arranged on the opposite side of the terminal block 40 in the axial direction. The connector housing 50 is formed in a predetermined shape (for example, a tubular shape) that can be engaged with the external connector to be connected. The connector housing 50 is, for example, a part of a connector on the male side, and is for connecting the terminal 43 to a female connector which is an external connector.

As shown in FIG. 3, the winding 31 constituting the coil 30 is guided by a guide portion 48 provided on the first surface 41 of the terminal block 40, and is guided from the coil 30 toward the entwined portion 43a by a predetermined path. Extend. The guide portion 48 is, for example, a pin-shaped guide pin that is erected at a predetermined position on the terminal block 40. Further, the guide portion 48 is individually provided for each of the plurality of windings 31 entwined with the plurality of entwined portions 43a.

The winding 31 extends in a predetermined path as described above, and the slit 45 is arranged between one terminal 43 and the other terminal 43 adjacent to each other in the circumferential direction. As a result, the slit 45 is arranged between one winding 31 and the other winding 31 that are adjacent to each other in the circumferential direction. Further, an inclined surface 44 is arranged below the winding 31 in the axial direction.

The winding 31 constituting the coil 30 is formed with a slack (not shown) between the coil 30 and the entwined portion 43a in order to reduce the influence of thermal expansion due to a temperature change. Such slack is formed by removing the jig after the winding 31 is entwined with the entwined portion 43a via a jig (not shown).

Further, a varnish having a predetermined viscosity and preventing the winding 31 from floating from the terminal block 40 is applied to the end of the winding 31 including the entwined portion 43a. Since the inclined surface 44 is arranged on the lower side in the axial direction of the winding 31 coated with the varnish, the excess varnish that has fallen from the winding 31 falls on the inclined surface 44. The varnish that has fallen on the inclined surface 44 flows to the second surface 42 side, and then accumulates in the recess 47. Further, since the inclined surface 44 has a slit 45 that is continuous with the second surface 42 and extends in the radial direction, the varnish that covers the inclined surface 44 collects in the recess 47 through the slit 45.

It is preferable that the insulator 20, the terminal block 40, and the connector housing 50 are integrally formed. As a result, since the insulator 20, the terminal block 40, and the connector housing 50 can all be molded in one molding step, it is possible to have a predetermined bonding strength and simplify the manufacturing process of the stator structure 1.

Further, the terminal block 40 is provided with the above-mentioned pin 22. For example, as shown in FIG. 2, the terminal block 40 is provided with a pair of pins 22 on both sides in the circumferential direction.

(Coil cover assembly process)
Subsequently, the assembly process of the coil cover 60 in the stator structure 1 according to the embodiment will be described with reference to FIG.

The coil covers 60 are assembled from both sides in the axial direction with respect to the stator 1a shown in FIG. 1B in which the coil 30 is wound around the stator core 10. The coil cover 60 covers the coil 30 from both sides in the axial direction, and includes a first coil cover 70 shown in FIG. 1 (a) and a second coil cover 80 shown in FIG. 1 (c).

The first coil cover 70 has an annular portion 71 and a cylindrical tubular portion 72. The tubular portion 72 is provided on the outer peripheral side of the annular portion 71 and extends downward.

The tubular portion 72 of the first coil cover 70 is provided with a plurality of flanges 73 extending outward in the radial direction. The plurality of flanges 73 are provided at positions corresponding to the plurality of flanges 21 provided on the insulator 20 of the stator 1a.

Further, the flange 73 has a shape capable of accommodating the flange 21, and a through hole 74 is formed. The through hole 74 is formed so that the pin 22 provided on the flange 21 can be inserted from below.

Further, the first coil cover 70 is provided with a cover portion 75 extending radially outward from the tubular portion 72. The cover portion 75 is arranged at a position corresponding to the terminal block 40 of the stator 1a, and covers the terminal block 40 and the terminal 43 provided on the terminal block 40. The first coil cover 70 is formed so that the annular portion 71 and the cover portion 75 are substantially flush with each other.

A through hole 74 is also formed in the cover portion 75 at a position where a pin 22 provided on the terminal block 40 of the stator 1a can be inserted from below. A recess 75a recessed below the surface of the annular portion 71 of the first coil cover 70 is formed around the through hole 74 in the cover portion 75.

Further, the first coil cover 70 is provided with a plurality of convex portions 76 provided on the inner peripheral side of the annular portion 71 and extending downward. The plurality of convex portions 76 are provided at positions corresponding to the plurality of slots 14 formed in the stator core 10. The convex portion 76 has a shape corresponding to the slot 14.

The second coil cover 80 has an annular portion 81 and a cylindrical tubular portion 82. The tubular portion 82 is provided on the outer peripheral side of the annular portion 81 and extends upward.

On the lower surface side of the annular portion 81 of the second coil cover 80, a plurality of recesses 83 recessed upward are formed. In addition, since FIG. 1C shows a perspective view of the second coil cover 80 as viewed from above, a state in which the portion of the recess 83 projects upward and becomes convex is shown.

The plurality of recesses 83 are provided at positions corresponding to the plurality of recesses provided in the insulator 20. Further, a through hole 84 is formed in the recess 83. The through hole 84 is formed so that the pin 24 provided in the recess can be inserted from above.

Further, the second coil cover 80 is provided with a cover portion 85 extending radially outward from the tubular portion 82. The cover portion 85 is arranged at a position corresponding to the connector housing 50 and covers a part of the root of the connector housing 50.

Further, the second coil cover 80 is provided with a plurality of convex portions 86 provided on the inner peripheral side of the annular portion 81 and extending upward. The plurality of convex portions 86 are provided at positions corresponding to the plurality of slots 14 formed in the stator core 10. The convex portion 86 has a shape corresponding to the slot 14.

Then, the first coil cover 70 is mounted on one side of the stator 1a in the axial direction, and the second coil cover 80 is mounted on the other side of the stator 1a in the axial direction. In other words, the stator 1a is sandwiched between the first coil cover 70 and the second coil cover 80 from above and below. At this time, the convex portion 76 of the first coil cover 70 is inserted into the slot 14 formed in the stator core 10, and the convex portion 86 of the second coil cover 80 is similarly inserted into the slot 14, and the convex portion 76 and the convex portion are inserted. The inner peripheral side of slot 14 is closed with 86.

At this time, the pin 22 provided on the upper side of the insulator 20 is inserted into the through hole 74 of the first coil cover 70, and the tubular portion 72 of the first coil cover 70 is fitted into the step 21b formed in the insulator 20. Then, the pin 24 provided on the lower side of the insulator 20 is inserted into the through hole 84 of the second coil cover 80, and the concave portion 83 (convex portion protruding upward) of the second coil cover 80 is inserted into the insulator 20. It is fitted into a recess (not shown) provided with a lower pin 24.

After that, the end of the pin 22 protruding from the through hole 74 of the first coil cover 70 and the end of the pin 24 protruding from the through hole 84 of the second coil cover 80 are subjected to infrared caulking, heat caulking, heat welding, etc. Crush by the means of. As a result, the first coil cover 70 and the second coil cover 80 are held by the insulator 20, and the stator structure 1 according to the embodiment is completed.

(Resolver configuration)
Subsequently, the configuration of the resolver 3 using the stator structure 1 according to the embodiment will be described with reference to FIGS. 6 and 7. FIG. 6 is a plan view showing the configuration of the resolver 3 using the stator structure 1 according to the embodiment, and FIG. 7 is a side view showing the configuration of the resolver 3 using the stator structure 1 according to the embodiment.

As shown in FIG. 6, by providing the rotor 2 inside the stator structure 1, the resolver 3 according to the embodiment can be obtained. The resolver 3 according to the embodiment is a VR (Variable Reluctance) type resolver. For example, the resolver 3 is an inner rotor type resolver, and the rotor 2 is arranged inside the stator structure 1. The rotor 2 is attached to a shaft of a rotary electric machine (not shown).

The rotor 2 has a plurality of cores, and the plurality of cores are laminated in the axial direction. The core is manufactured by pressing a steel plate formed of a soft magnetic material such as an electromagnetic steel plate.

The outer peripheral surface of the rotor 2 in the radial direction is formed in a non-circular shape uneven in the radial direction. The rotor 2 shown in FIG. 6 has six convex portions 2a on the outer peripheral surface in the radial direction, and shows a case where the axial double angle of the rotor 2 is 6X. The axial double angle of the rotor 2 may be 1X to 5X, or 7X or more.

Here, as shown in FIG. 7, the resolver 3 of the embodiment is arranged so that the pin 22 whose tip portion is crushed does not protrude from the third main surface 70a provided on the annular portion 71 of the first coil cover 70. Will be done.

Further, the resolver 3 of the embodiment is arranged so that the pin 24 whose tip portion is crushed does not protrude from the fourth main surface 80a provided on the annular portion 81 of the second coil cover 80.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and various modifications can be made without departing from the spirit of the present invention.

Further, in the embodiment, the example in which the insulator 20 is integrally formed is shown, but the insulator may be formed by dividing the insulator into two in the axial direction, and the stator core 10 may be sandwiched between the two insulators. Further, in the embodiment, the case where the present invention is applied to the inner rotor type resolver 3 is shown, but the present invention may be applied to the outer rotor type resolver.

As described above, the stator structure 1 according to the embodiment includes a stator core 10, an insulator 20, a plurality of coils 30, and a terminal block 40. The stator core 10 has a plurality of teeth 12 extending in one of the radial directions of the annular main body 11. The plurality of coils 30 are formed by winding the winding 31 around the teeth 12. The terminal block 40 has a plurality of terminals 43 in which the ends of the windings 31 are entwined. The terminal block 40 is provided with a first surface 41 arranged on the first main surface 11a in the axial direction of the main body 11, and a plurality of terminals 43, and is arranged at a position on the other side in the axial direction from the first surface 41. It has a second surface 42 to be formed. As a result, the dimension of the terminal 43 protruding from the first main surface 11a on one side of the stator core 10 in the axial direction can be reduced, so that the dimension in the axial direction can be reduced. As a result, it is possible to eliminate the dimensional restrictions that occur when the stator structure 1 is attached to the rotary electric machine, and improve the attachability of the stator structure 1 to the rotary electric machine.

Further, the terminal block 40 of the stator structure 1 according to the embodiment has an inclined surface 44 that connects the first surface 41 and the second surface 42 in the radial direction and is inclined with respect to the axial direction and the radial direction. As a result, the excess varnish applied to the end of the winding 31 can flow to the second surface 42. As a result, it is possible to prevent the varnish from flowing and accumulating on the first surface 41.

Further, the terminal block 40 of the stator structure 1 according to the embodiment has a second surface 42 as a bottom surface, and a recess formed by a wall portion 46 extending from the second surface 42 to one side in the axial direction and an inclined surface 44. Has 47. Therefore, the terminal block 40 can store the varnish in the recess 47 and prevent the varnish from flowing to other places other than the recess 47.

Further, the terminal block 40 of the stator structure 1 according to the embodiment has a slit 45 extending in the radial direction in a part in the circumferential direction in a manner continuous with the second surface 42. Therefore, the slit 45 effectively allows the varnish to flow into the recess 47, and the capacity of the varnish that can be stored in the recess 47 can be increased.

Further, the second surface 42 of the stator structure 1 according to the embodiment is arranged inside the elongated hole 13 formed in the main body 11. Therefore, the size of the terminal protruding from the first main surface 11a can be made smaller on one side of the stator core 10 in the axial direction. As a result, the mountability to the rotary electric machine can be further improved. Further, the inclined surface 44 is formed so as to cover an edge located inside the elongated hole 13 in the radial direction. Therefore, after securing the area of the second surface 42 on which the plurality of terminals 43 are provided, the varnish can be flowed to the second surface 42 by the inclined surface 44 and stored in the recess 47.

Further, the second surface 42 of the terminal block 40 in the stator structure 1 according to the embodiment is arranged inside the elongated hole 13 used for fixing the resolver 3 to the housing of the rotary electric machine. Therefore, it is not necessary to provide a special step of forming a hole for arranging the second surface 42, so that the manufacturing process is not complicated.

Further, the stator structure 1 according to the embodiment includes a first coil cover 70 (first coil cover) that covers a plurality of coils 30 from one side in the axial direction and covers the terminal block 40 from one side in the axial direction. Therefore, the stator structure 1 can prevent damage to the terminal 43 provided on the terminal block 40.

In the embodiment, the elongated hole 13 penetrates the stator core 10 in the axial direction. However, the embodiment is not limited to this, and the elongated hole 13 does not have to have a bottom portion in the middle of the axial direction and does not penetrate the stator core 10 in the axial direction. Further, the hole for arranging the second surface 42 of the terminal block 40 is not limited to the elongated hole 13 used for fixing the resolver 3 to the housing of the rotary electric machine, and the second surface 42 is arranged inside the other holes. You may.

Further, in the embodiment, the first coil cover 70 and the second coil cover 80 having different configurations have been described. However, the embodiment is not limited to this, and the second coil cover 80 may be formed in the same manner as the first coil cover 70. Further, although the stator structure 1 and the resolver 3 according to the embodiment have been described with the configuration provided with the coil cover 60, the embodiment is not limited to this, and the coil cover 60 may not be provided depending on the implementation status of the resolver 3.

Further, in the embodiment, the stator structure 1 and the resolver 3 having the connector housing 50 have been described. However, the embodiment is not limited to this, and the stator structure 1 and the resolver 3 may be provided with a lead wire holding portion instead of providing the connector housing 50. When the lead wire holding portion is provided in the stator structure 1, the lead wire holding portion may extend in the radial direction with respect to the stator core 10 or may extend downward in the axial direction.

Further, the resolver 3 according to the embodiment includes a rotor 2 and the above-mentioned stator structure 1. As a result, it is possible to realize a resolver 3 that can further improve the mountability to the rotary electric machine.

Moreover, the present invention is not limited by the above-described embodiment. The present invention also includes a configuration in which the above-mentioned components are appropriately combined. Further, further effects and modifications can be easily derived by those skilled in the art. Therefore, the broader aspect of the present invention is not limited to the above-described embodiment, and various modifications can be made.

1 stator structure, 2 rotors, 3 resolvers, 10 stator cores, 11 main body, 11a 1st main surface (main surface), 12 teeth, 30 coils, 31 windings, 40 terminal blocks, 43 terminals, 44 inclined surfaces, 45 slits. , 46 Wall, 47 Recess, 70 1st coil cover (coil cover)

Claims (7)

A stator core having a plurality of teeth extending in one radial direction of the annular main body,
A plurality of coils formed by winding windings around the teeth, and
A terminal block having a plurality of terminals in which the ends of the windings are entwined,
With
The terminal block is provided with a first surface arranged on the main surface of the main body in the axial direction and a plurality of the terminals, and is arranged at a position on the other side in the axial direction from the first surface. Has two sides,
Stator structure. The terminal block connects the first surface and the second surface in the radial direction, and has an inclined surface that is inclined with respect to the axial direction and the radial direction.
The stator structure according to claim 1. The terminal block has a bottom surface of the second surface, and has a recess formed by a wall portion extending from the second surface to one side in the axial direction and the inclined surface.
The stator structure according to claim 2. The inclined surface has a slit extending in the radial direction in a part in the circumferential direction in a manner continuous with the second surface.
The stator structure according to claim 2 or 3. A coil cover that covers the plurality of the coils from one side in the axial direction and covers the terminal block from one side in the axial direction is provided.
The stator structure according to any one of claims 2 to 4. The second surface is arranged inside a hole formed in the main body portion.
The inclined surface is formed so as to cover an edge located inside the hole of the main body in the radial direction.
The stator structure according to any one of claims 2 to 5. With the rotor
The stator structure according to any one of claims 1 to 6.
With a resolver.