JP2009296771A - Insulator, stator, and method for manufacturing for stators - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an insulator that makes it possible to enhance workability. <P>SOLUTION: A coupling rotary portion 53 formed at the end of a second insulator member 50 in the circumferential direction includes: an opening 54a open in the radial direction; and a coupling recessed portion 54 so formed that the width of the opening 54a in the circumferential direction can be expanded. A coupling projected portion 44 is inserted into the coupling recessed portion 54 through the opening 54a. That is, a first insulator member 40 is coupled to the second insulator member 50 in the radial direction by inserting the coupling projected portion 44 formed on the first insulator member 40 into the coupling recessed portion 54 in the second insulator member 50 from outside in the radial direction. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an insulator, a stator, and a method for manufacturing the stator.

  Conventionally, a stator in a brushless motor or the like has a winding wound around a tooth portion of a core (stator core). Specifically, the core includes a plurality of teeth portions provided radially and an annular portion that connects the teeth portions on the radially outer side, and windings are wound around the teeth portions via insulators. As such a core, there is one composed of a plurality of divided cores which are allowed to rotate with respect to each other in a shape divided in the circumferential direction (for each tooth portion). In such a stator, before winding the divided core into an annular shape, that is, by winding the winding in a state in which the interval between the tooth portions is widened, the winding can be easily performed without interfering with the adjacent tooth portions. Can be wound around.

And the insulator provided in such a stator (core) needs to permit rotation of the split core, in other words, to be rotatable integrally with the split core. As such an insulator, there is one in which a plurality of insulator members separated for each divided core are respectively mounted on the divided core to form an insulator (see, for example, Patent Document 1).
Japanese Patent Application Laid-Open No. 2006-115685

  However, since the insulator disclosed in Patent Document 1 is inserted from the stacking direction of the core into the connecting concave portion formed in the rotating connecting portion, the connecting convex portion formed in the rotating connecting portion of the adjacent insulator is inserted. Positioning of the split core with respect to the insulator and positioning of the connecting convex portion and the connecting concave portion of the adjacent insulator must be performed simultaneously. For this reason, the conventional insulator has been an obstacle to improving workability. Moreover, since the flange protrusions formed on the connecting protrusions must be inserted into the flange recesses in order to prevent them from coming off, the angle of adjacent insulators must be adjusted, which hinders improvement in workability. It was.

  Further, when the multi-divided core is shaped from a row shape into an annular shape, both ends cannot be made into an insertion relation structure in the axial direction.

  The present invention has been made in view of such circumstances, and an object thereof is to provide an insulator, a stator, and a stator manufacturing method capable of improving workability.

In order to solve the above-described problem, the invention described in claim 1 is an insulator that covers each surface of a plurality of divided cores that are arranged in a ring and constitute a stator of a rotating electrical machine,
The adjacent insulator has a connecting convex portion extending in the axial direction, and has a connecting rotation portion that is connected to an insulator covering the adjacent divided core and allows relative connecting rotation at the circumferential end. The connecting rotation portion has an opening portion that opens in a radial direction and is formed so that a width in the circumferential direction of the opening portion can be expanded, and a connecting recess portion into which the connecting protrusion portion can be inserted from the opening portion. Have.

  According to a second aspect of the present invention, in the insulator according to the first aspect, the connection convex portion is formed in a columnar shape, and the connection rotation portion includes an inner peripheral surface of the recess and the connection rotation portion. The connecting projections are formed so as to be insertable by thinning the gap between the outer peripheral surface and the tip of the connecting rotation part.

  A third aspect of the present invention is the insulator according to the first or second aspect, wherein adjacent insulators have the connecting convex portions at both ends in the circumferential direction and the connecting rotating portions having the connecting concave portions at both ends in the circumferential direction. Is formed.

  According to a fourth aspect of the present invention, in the insulator according to the second or third aspect of the present invention, the insulator includes the connecting rotation portion in which the connecting convex portion is formed on one end in the circumferential direction, and the connecting concave portion on the other end in the circumferential direction. It has a connection rotation part formed.

  The invention according to claim 5 is a stator in which a plurality of divided cores are arranged in an annular shape by connecting insulators respectively covering a plurality of divided cores, and one of the adjacent insulators is arranged at a circumferential end. The other rotating insulator having a connecting rotation portion having a connecting projection extending in the axial direction has an opening opening in the radial direction at the circumferential end, and the width in the circumferential direction of the opening is increased. It has a connecting recess that is formed so as to be openable, has a connecting recess into which the connecting projection can be inserted, and allows a relative connecting rotation of the adjacent insulators.

  According to a sixth aspect of the present invention, in the stator according to the fifth aspect, the connection convex portion is formed in a columnar shape, and the connection rotation portion having the connection concave portion is an inner peripheral surface of the connection concave portion. And the outer peripheral surface of the connecting rotation portion is thinned so that the tip of the connecting rotation portion is swingable, so that the connecting convex portion can be inserted.

  A seventh aspect of the present invention is the stator according to the fifth or sixth aspect, wherein the insulator includes a first insulator having a connecting portion in which the connecting projections are formed at both ends in the circumferential direction, and the first end at the both ends in the circumferential direction. And a second insulator having a connecting portion in which a connecting recess is formed.

  According to an eighth aspect of the present invention, in the stator according to the second or third aspect of the present invention, the stator has a connection rotation portion in which the connection convex portion is formed on one end side in the circumferential direction, and the connection concave portion on the other end side in the circumferential direction. It has a connection rotation part formed.

  The invention according to claim 9 is a method of manufacturing a stator in which an insulator that covers each of a plurality of divided cores is connected to form a plurality of the divided cores in an annular shape, and each of the divided cores has a structure according to any one of claims 1 to 4. Assembling the insulator according to any one of the above, connecting all the insulators constituting the stator in a row, winding a winding around each divided core, and rotating the insulator relative to each other to form a plurality of The split core was circularized.

  A tenth aspect of the present invention is a method of manufacturing a stator in which insulators that respectively cover a plurality of divided cores are connected and the plurality of divided cores are arranged in an annular shape, and each of the divided cores has a method according to any one of the first to fourth aspects. Assembling the insulator according to any one of the above, winding a winding around each divided core, connecting all the insulators constituting the stator in a row, and relatively rotating the insulator to form a plurality of The split core was circularized.

  Invention of Claim 11 is a manufacturing method of the stator which connected the insulator which coats a plurality of division cores, respectively, and arranged the plurality of division cores in the shape of a ring, and each division core of claims 1-4 Each of the cores is formed by assembling the insulator according to any one of the above, and connecting a number of divided cores smaller than the number of the divided cores constituting the stator via the insulator. A plurality of divided cores constituting a row are continuously wound around a plurality of divided cores, and a plurality of the divided cores constituting the stator are arranged annularly by connecting the plurality of core rows.

(Function)
According to invention of Claim 1, 5, since a connection convex part can be inserted from a radial direction to the connection recessed part of a connection rotation part, after attaching an insulator to a split core, each insulator can be connected. It is possible to improve workability.

  According to the second and sixth aspects of the present invention, the outer diameter of the connecting convex portion can be increased by making the connecting convex portion cylindrical, and the strength of the connecting convex portion can be improved. Retention can be improved.

  According to the third and seventh aspects of the present invention, since two types of insulators may be connected alternately, it is unnecessary to make a determination such as connecting different insulators to the end portions, and workability can be improved. .

According to the fourth and eighth aspects of the invention, since only one type of insulator is used to connect a plurality of divided cores, the number of parts can be reduced.
According to the ninth aspect of the present invention, since the connecting convex portion can be inserted from the radial direction into the connecting concave portion of the connecting rotating portion, the plurality of insulators can be connected by connecting the insulators to the divided cores. The split cores can be easily connected in an annular shape, and workability can be improved.

According to the tenth aspect of the present invention, since the insulators are connected after the winding, it is only necessary to hold the divided core necessary for the winding, and the winding can be performed efficiently.
According to the eleventh aspect of the invention, since the divided cores necessary for continuous winding are connected by the insulator, it is sufficient to hold the necessary number of divided cores at the time of winding, and the winding is performed efficiently. Will be able to.

  ADVANTAGE OF THE INVENTION According to this invention, the manufacturing method of the insulator which can aim at the improvement of workability | operativity, a stator, and a stator can be provided.

DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, an embodiment of the invention will be described with reference to the drawings.
As shown in FIG. 1, the housing 2 of the brushless motor 1 is formed in a cylindrical shape, and a stator 3 is disposed in the housing 2. Inside the stator 3, a rotor 4 (shown by an alternate long and short dash line in the drawing) having a magnet (not shown) arranged to face the stator 3 is supported by a rotating shaft (not shown).

The stator 3 includes a stator core 7 as a core insulated from the winding 6 by the insulator 5.
The stator core 7 includes a plurality of tooth portions 8 provided radially and wound with the winding 6, and an annular portion 9 that connects the radially outer end portions of the tooth portions 8. In the present embodiment, twelve teeth portions 8 are formed at equiangular (30 degree) intervals. A single tooth portion 8 is shown below FIG.

  The stator core 7 includes a plurality of (in this embodiment, 12) divided cores 10 each having one tooth portion 8. The divided cores 10 are in contact with each other at the circumferential end portion of the divided core annular portion 11 formed in an arc shape extending from the tooth portion 8 to both sides in the circumferential direction. The split core 10 is formed by laminating thin plate-like members each including a split core annular portion 11 and a tooth portion 8. In addition, the edge part of the division | segmentation core annular part 11 of the member to be laminated | stacked is formed in the circular arc convex shape or circular arc concave shape which has an arc center on the cyclic | annular part 9. FIG. Then, the rotation of the split cores 10 is guided by arcs formed at these end portions.

  The insulator 5 is composed of a plurality of insulator members 12 (the number corresponding to the above-described divided core 10, which is 12 in this embodiment) having a shape corresponding to the divided core 10. Each insulator member 12 constitutes an insulator for each divided core 10. The insulator member 12 is made of an insulating resin material.

  Each insulator member 12 has a connecting rotation portion 13 at both ends in the circumferential direction. The connecting rotation unit 13 connects the adjacent insulator members 12 to each other and allows relative rotation along a plane orthogonal to the axis of the adjacent insulator member 12.

  In the two connection rotation parts 13 that connect the adjacent insulator members 12, one connection rotation part 13 has a protrusion (connection protrusion 44) protruding in the axial direction as a rotation axis, and the other connection The rotation part 13 has a recessed part (connecting recessed part 54) recessed in the axial direction. By inserting the convex portion into the concave portion, the insulator members 12 are rotatably connected.

  In this embodiment, the insulator member 12 includes a first insulator member 40 (see FIGS. 2 (a), 3 (a), and (b)) having a connecting convex portion 44, and a second insulator member 50 (having a connecting recess). 2 (b) and FIGS. 4 (a) and 4 (b)).

  2 is a partial perspective view of the first insulator member 40, FIG. 3A is a side view of the first insulator member 40 viewed from the radial inner side (axial center side) in FIG. 1, and FIG. It is the top view which looked at the 1st insulator member 40 from the axial direction in FIG.

  The 1st insulator member 40 is provided with the core teeth coating | coated part 41 which coat | covers the teeth part 8 (refer FIG. 1), and the cyclic | annular coating | coated part 42 extended in the circumferential direction from the core teeth coating | coated part 41. FIG.

  The core teeth covering portion 41 is formed in a substantially U shape when viewed from the radially inner side (the radially outer side), and one axial surface of the tooth portion 8 (see FIG. 1) and the tooth portion 8 (see FIG. 1). The both sides in the circumferential direction are covered. Further, the tip portion of the core teeth covering portion 41 is provided with a protruding portion 41a (see FIG. 2A) protruding in the axial direction so as to restrict the protrusion of the wound winding to the radially inner side.

  The annular covering portion 42 includes a covering portion 42 a that covers the inner peripheral side of the split core annular portion 11 (see FIG. 1), and a protruding portion 42 b that protrudes in the axial direction from the split core annular portion 11. The protruding portion 42b regulates the protrusion of the wound winding 6 (see FIG. 1) to the outside in the radial direction. The protruding portion 42b is formed with a locking groove 42c (see FIG. 2A) that extends along the radial direction and into which the winding 6 can be inserted.

  At both ends in the circumferential direction of the projecting portion 42b of the annular covering portion 42, a connecting rotation portion 43 is formed. The connecting rotation portion 43 is formed within the radial width of the annular portion 9 shown in FIG. 1, and its circumferential end surface 43a is formed in an arc shape less than a semicircle that expands outward in the circumferential direction. Further, a connecting convex portion 44 is formed on an opposing surface 43b facing the adjacent connecting turning portion 13 (connecting turning portion 53) (see FIG. 1) in the axial direction.

  As shown in FIG. 2A and FIG. 3A, the connecting convex portion 44 is formed in a cylindrical shape and protrudes from the connecting rotating portion 43 in the axial direction. The circumferential end surface 43 a of the connecting rotation portion 43 is a surface formed along an arc centered on the axial center of the cylindrical connecting convex portion 44.

  2 (b) is a partial perspective view of the second insulator member 50, FIG. 4 (a) is a side view of the second insulator member 50 viewed from the outside in the radial direction in FIG. 1, and FIG. 4 (b) is the second view. It is the top view which looked at the insulator member 50 from the axial direction in FIG.

The second insulator member 50 includes a core teeth covering portion 51 that covers the tooth portion 8 and an annular covering portion 52 that extends from the core teeth covering portion 51 in the circumferential direction.
The core teeth covering portion 51 is formed in a substantially U shape when viewed from the radially inner side (the radially outer side), and one axial surface of the teeth portion 8 (see FIG. 1) and the teeth portion 8 (see FIG. 1). The both sides in the circumferential direction are covered. Further, the tip portion of the core teeth covering portion 51 includes a protruding portion 51a (see FIG. 2B) protruding in the axial direction so as to restrict the protrusion of the wound winding to the radially inner side.

  The annular covering portion 52 includes a covering portion 52 a that covers the inner peripheral side of the split core annular portion 11 (see FIG. 1), and a protruding portion 52 b that protrudes in the axial direction from the split core annular portion 11. The protrusion 52b regulates the protrusion of the wound winding 6 (see FIG. 1) to the outside in the radial direction. The protruding portion 52b is formed with a locking groove 52c (see FIG. 2B) that extends along the radial direction and into which the winding 6 can be inserted.

  At both ends in the circumferential direction of the protruding portion 52b of the annular covering portion 52, a connecting rotation portion 53 is formed. The connecting rotation portion 53 is formed within the radial width of the annular portion 9 shown in FIG. Further, a connecting concave portion 54 is formed on the facing surface 53b facing the adjacent connecting rotating portion 13 (connecting rotating portion 43) (see FIG. 1) in the axial direction.

  As shown in FIGS. 2B and 4B, the connecting recess 54 is a hole that is formed in a substantially circular shape in the axial direction and penetrates the connecting rotation portion 53 in the axial direction. The connection recessed part 54 is formed so that the connection convex part 44 can be freely inserted. That is, the inner diameter of the connecting concave portion 54 is formed larger than the outer diameter of the connecting convex portion 44.

  Furthermore, the connection recessed part 54 has the opening part 54a opened to a radial direction outer side. Therefore, the connecting rotation part 53 is formed in a substantially C shape in the axial direction. The opening width in the circumferential direction of the opening 54a is set to be smaller than the diameter of the connecting projection 44 formed in a columnar shape. Accordingly, the opening 54a is difficult for the connecting projection 44 inserted into the connecting recess 54 to come out of the opening 54a.

  The connecting rotation portion 53 is formed with a thin portion 55 in which the thickness between the outer peripheral surface 53 a and the inner peripheral surface of the connecting recess 54 is partially reduced. In addition, a groove 54 b extending along the axial direction is formed on the inner peripheral surface of the connecting recess 54. At least one of the thin wall portion 55 and the groove 54b is formed so that the connecting rotation portion 53 is elastically deformed and the tip portion 56 swings along a plane orthogonal to the insulator axis.

  When the connecting convex portion 44 is pressed from the radially outer side (in the direction of the arrow Ya shown in FIG. 4A) against the connecting concave portion 54 of the connecting rotating portion 53 configured as described above, the thin portion 55 and the groove 54b At least one of the ends 56 swings, the opening width in the circumferential direction of the opening 54 a increases, and the connecting projection 44 enters the connecting recess 54. That is, the first insulator member 40 and the second insulator member 50 are coupled by inserting the coupling convex portion 44 into the coupling concave portion 54 from the radially outer side. Since the cylindrical connection convex portion 44 is loosely inserted into the substantially circular connection concave portion 54, the first insulator member 40 and the second insulator member 50 can rotate relative to each other. Further, since the opening width in the circumferential direction of the opening 54a formed in the connecting rotation portion 53 is set to be smaller than the diameter of the connecting convex portion 44, the connecting convex portion 44 extends radially outward from the opening 54a. It is prevented from coming out. It should be noted that by moving the first insulator member 40 formed with the connecting convex portion 44 against the elastic force of the connecting rotating portion 53 toward the radially outer side, the connecting rotating portion 53 is bent and the tip portion 56 is bent. By swinging, the opening 54 a is widened and can be extracted from the connecting recess 54.

Next, assembly of the insulator 5 will be described.
(First assembly example)
The first insulator member 40 or the second insulator member 50 is assembled to the divided core 10 (see FIG. 1) from the stacking direction, and the divided core 10 (hereinafter referred to as the first divided core) is assembled with the first insulator member 40. 10a) and the split core 10 (hereinafter referred to as the second split core 10b) assembled with the second insulator member 50.

  Next, the winding 6 is wound around each of the first divided core 10a and the second divided core 10b. And the connection convex part 44 of the 1st division | segmentation core 10a is inserted in the connection recessed part 54 of the 2nd division | segmentation core 10b from a radial direction outer side, and the 1st division | segmentation core 10a and the 2nd division | segmentation core 10b are connected. Then, a series of core rows in which six first divided cores 10a and six second divided cores 10b are alternately connected (see FIG. 5; FIG. 5 omits the divided cores 10 and the windings 6). Is). Then, after the first divided core 10a and the second divided core 10b are relatively rotated to form the core row into an annular shape, the first divided core 10a and the second divided core 10b at both ends of the core row are connected. . As a result, an annular stator 3 is obtained as shown in FIG. The brushless motor 1 is obtained by inserting the stator 3 into the housing 2 and disposing the rotor 4 inside the stator 3.

(Second assembly example)
The first insulator member 40 or the second insulator member 50 is assembled to the divided core 10 (see FIG. 1) from the stacking direction, and the divided core 10 (hereinafter referred to as the first divided core) is assembled with the first insulator member 40. 10a) and the split core 10 (hereinafter referred to as the second split core 10b) assembled with the second insulator member 50. Then, as in the first assembly example, a series of core arrays in which six first divided cores 10a and six second divided cores 10b are alternately connected are generated. The windings 6 are sequentially wound around the first divided core 10a and the second divided core 10b in this core row. Then, after the first divided core 10a and the second divided core 10b are relatively rotated to form the core row into an annular shape, the first divided core 10a and the second divided core 10b at both ends of the core row are connected. . As a result, an annular stator 3 is obtained as shown in FIG.

(Third assembly example)
The first insulator member 40 or the second insulator member 50 is assembled to the divided core 10 (see FIG. 1) from the stacking direction, and the divided core 10 (hereinafter referred to as the first divided core) is assembled with the first insulator member 40. 10a) and the split core 10 (hereinafter referred to as the second split core 10b) assembled with the second insulator member 50. Then, the split cores that are continuously wound are connected. For example, as shown in FIG. 6, the first conducting wire 71 constitutes V-phase coils V2 and V1 and U-phase coils U4 and U3, and the second conducting wire 72 comprises W-phase coils W3, W4 and V Phase coils V3 and V4 are configured, and the third conductive wire 73 configures U-phase coils U1 and U2 and W-phase coils W2 and W1. That is, each of the first to third conducting wires 71 to 73 is continuously wound around four teeth portions 8 that are continuous in the circumferential direction. In addition, each conducting wire 71-73 is the structure which coat | covered the metal wire which consists of an electroconductive metal material (this embodiment copper) with the insulating film.

  Two first divided cores 10a and two second divided cores 10b are alternately connected to generate a core row composed of four divided cores. Then, three sets of this core row are generated. The conducting wires 71 to 73 are wound around the three sets of core rows. Then, the divided cores 10a and 10b are relatively rotated to form the core row in an arc shape. Next, as shown in FIG. 8, the core row 81 wound with the first conducting wire 71 and the core row 82 wrapped with the second conducting wire 72 are connected. Further, the core row 83 around which the third conducting wire 73 is wound is connected to the core rows 81 and 82. As a result, an annular stator 3 is obtained as shown in FIG. And the conducting wires 71-73 of each core row | line 81-83 are connected. At this time, as shown in FIG. 7A, the U4-V1 interphase connecting wire 71a is connected to the V3-W4 interphase connecting wire 72a and the W2-U2 interphase connecting wire 73a by the connection terminals 75, respectively. As shown in FIG. 7B, the connection terminal 75 is formed so as to wrap around the crossover wire 71a and the crossover wire 72a while being in contact with each other. In addition, although not shown in figure, the connection terminal 75 which connects the connecting wire 71a and the connecting wire 73a shown to Fig.7 (a) is formed similarly.

As described above, the present embodiment has the following effects.
(1) The connecting rotation part 53 formed at the circumferential end of the second insulator member 50 has an opening 54a that opens in the radial direction, and is formed so that the circumferential width of the opening 54a can be expanded. The connecting recess 54 is provided. The connecting convex portion 44 is inserted into the connecting concave portion 54 from the opening 54a. That is, by inserting the connecting convex portion 44 formed on the first insulator member 40 from the radially outer side into the connecting concave portion 54 of the second insulator member 50, the first insulator member 40 has a diameter on the second insulator member 50. Connect in the direction. Accordingly, after the first insulator member 40 and the second insulator member 50 are mounted on the split core 10, respectively, the two insulator members 40 and 50 can be connected to each other. Therefore, workability can be improved.

  (2) By making the connecting convex portion 44 cylindrical, the outer diameter of the connecting convex portion 44 can be increased, and by improving the strength of the connecting convex portion 44, the first insulator member 40 and the second insulator member 40 can be increased. The connection holding | maintenance property between the insulator members 50 can be improved. Moreover, since the connection recessed part 54 is made into C shape by axial view, the outer diameter of the connection convex part 44 can be enlarged.

  (3) The connection rotation part 43 which has the connection convex part 44 in the circumferential direction both ends of the 1st insulator member 40 is formed, and the connection rotation part 53 which has the connection recessed part 54 in the circumferential direction both ends of the 2nd insulator member 50. Is formed. And the 1st insulator member 40 and the 2nd insulator member 50 are connected alternately. Therefore, since only two types of insulator members 40 and 50 need be prepared, the number of parts can be reduced. In addition, since it is not necessary to make a determination such as assembling an insulator that does not have a connecting rotation part at the end, it is possible to improve workability.

  (4) Since the first insulator member 40 and the second insulator member 50 can correspond to various assembling methods such as connecting a necessary number of insulator members before and after winding, The degree of freedom can be increased.

  (5) After the winding 6 is wound around each of the divided cores 10a and 10b, the insulator members 40 and 50 are connected. Moreover, after producing | generating the core row | line 81-83 which connected the several insulator members 40 and 50 wound continuously, and winding the coil | winding 6 (conductor 71-73) to each core row | line 81-83, The core rows 81 to 83 are connected. In this way, since it is sufficient to hold only the necessary split core during winding, the winding of the winding around the split core can be easily performed.

  (6) It is possible to select insertion of the connecting convex portion 44 from the radial direction and insertion of the connecting convex portion 44 from the axial direction with respect to the connecting concave portion 54. For this reason, for example, depending on the lamination thickness of the split core, a method of inserting from the radial direction is selected when the lamination thickness is large, and a method of inserting from the axial direction is selected when the lamination thickness is small, etc. The operation according to the shape of the split core can be selected.

In addition, you may change embodiment of this invention as follows.
In the above embodiment, the stator core 7 is composed of 12 divided cores 10, but may be changed to a stator core composed of other number of divided cores. Of course, in this case, the number of the first and second insulator members 40 and 50 also needs to be changed.

  In the above embodiment, the insulator 5 is formed by alternately disposing the insulator members 12 having only the connecting convex portions 44 or the connecting concave portions 54 at both ends thereof. However, it is also possible to configure the insulator member from an insulator member provided with the connecting convex portion 44 at one end and the connecting concave portion 54 at the other end. In this case, an odd number of insulator members are connected in a ring shape, that is, a stator having an odd number of teeth portions 8 can be configured.

  In the above embodiment, the connecting recess 54 is a hole penetrating in the axial direction. However, it is not always necessary to penetrate. For example, the connecting recess 54 may have a bottom.

Sectional drawing of a motor. (A) (b) is a perspective view of an insulator. (A) radial direction side view of an insulator, (b) axial direction side view. (A) radial direction side view of an insulator, (b) axial direction side view. The top view of an insulator. Coil connection diagram. (A) Explanatory drawing of a connecting wire, (b) Sectional drawing of a connection terminal part. Explanatory drawing of the assembly | attachment of an insulator.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Brushless motor as a motor, 3 ... Stator, 5 ... Insulator, 6 ... Winding, 7 ... Stator core as a core, 8 ... Teeth part, 9 ... Ring part, 10 ... Split core, 11 ... Split ring part, 12 , 40, 50 ... Insulator member, 13, 43, 53 ... connection rotation part, 41, 51 ... core teeth covering part, 42, 52 ... annular covering part, 44 ... connection convex part, 53a ... outer peripheral surface, 54 ... connection Recess, 54a ... opening, 81-83 ... core row.

Claims (11)

An insulator that covers each surface of a plurality of divided cores that are arranged in a ring and constitute a stator of a rotating electrical machine,
The adjacent insulator has a connecting projection extending in the axial direction,
At the circumferential end, it has a connecting rotation part that is connected to an insulator that covers the adjacent divided core and allows a relative connecting rotation;
The connection rotation part has an opening part that opens in a radial direction and is formed so that a circumferential width of the opening part can be expanded, and has a connection concave part into which the connection protrusion part can be inserted.
An insulator characterized by that. Insulator according to claim 1,
The connecting convex portion is formed in a cylindrical shape,
The connecting rotation portion is formed such that a space between an inner peripheral surface of the concave portion and an outer peripheral surface of the connection rotating portion is thin, and a tip of the connecting rotation portion is formed to be swingable. Formed to be insertable,
An insulator characterized by that. The insulator according to claim 1 or 2,
Adjacent insulators have the connecting projections at both circumferential ends,
The connection rotation part which has the above-mentioned connection crevice at both ends in the peripheral direction is formed,
An insulator characterized by that. The insulator according to claim 2 or 3,
It has a connection rotation part in which the connection convex part was formed in the circumferential direction one end side, and has a connection rotation part in which the connection concave part was formed in the other end side in the circumferential direction.
An insulator characterized by that. A stator in which a plurality of the divided cores are annularly arranged by connecting insulators covering the plurality of divided cores,
One of the insulators adjacent to each other has a connecting rotation portion having a connecting projection extending in the axial direction at the circumferential end,
The other adjacent insulator has an opening that opens in the radial direction at the circumferential end and is formed so that the circumferential width of the opening can be expanded, and the connecting convex portion can be inserted through the opening. Having a connecting recess, and having a connecting rotation portion that allows relative connecting rotation of the adjacent insulators.
A stator characterized by that. The stator according to claim 5, wherein
The connecting convex portion is formed in a cylindrical shape,
The connection rotation part having the connection recess is formed thinly between the inner peripheral surface of the connection recess and the outer periphery of the connection rotation part so that the tip of the connection rotation part can swing. The connecting convex portion is formed to be insertable by
A stator characterized by that. The stator according to claim 5 or 6,
The insulator is
A first insulator having a connecting portion in which the connecting convex portions are formed at both ends in the circumferential direction;
A second insulator having a connecting portion in which the connecting recess is formed at both ends in the circumferential direction;
A stator comprising: The stator according to claim 2 or 3,
It has a connection rotation part in which the connection convex part was formed in the circumferential direction one end side, and has a connection rotation part in which the connection concave part was formed in the other end side in the circumferential direction.
A stator characterized by that. A manufacturing method of a stator in which a plurality of the divided cores are arranged in an annular shape by connecting insulators that respectively cover the plurality of divided cores,
Assembling the insulator according to any one of claims 1 to 4 to each divided core, connecting all the insulators constituting the stator in a row, winding a winding around each divided core, A plurality of the split cores are annularized by relatively rotating the insulator;
A stator manufacturing method characterized by the above. A manufacturing method of a stator in which a plurality of the divided cores are arranged in an annular shape by connecting insulators that respectively cover the plurality of divided cores,
Assembling the insulator according to any one of claims 1 to 4 to each divided core, winding a winding around each divided core, connecting all the insulators constituting the stator in a row, A plurality of the split cores are annularized by relatively rotating the insulator;
A stator manufacturing method characterized by the above. A manufacturing method of a stator in which a plurality of the divided cores are arranged in an annular shape by connecting insulators that respectively cover the plurality of divided cores,
The insulator according to any one of claims 1 to 4 is assembled to each divided core, and a smaller number of divided cores than the number of the divided cores constituting the stator are connected via the insulator. Forming a plurality of core rows, continuously winding around a plurality of divided cores constituting each core row, and connecting the plurality of core rows to arrange all the divided cores constituting the stator in an annular shape;
A stator manufacturing method characterized by the above.

Images