JP2014090661A - Dynamo-electric machine, method of manufacturing dynamo-electric machine, and armature - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance a space factor of a winding portion, and to keep the end of the winding portion (coil end) at a low position in an axial direction of an armature.SOLUTION: A dynamo-electric machine 10 includes a plurality of winding members 38, each having a winding portion 42 wound annularly and a sealing resin 44 for sealing the winding portion 42, and formed annularly as a whole in the circumferential direction of the winding portion 42 and arranged in spiral radial, and a core member 40 having a plurality of teeth 54 inserted so that a plurality of teeth are inserted into each of the plurality of winding members 38, and constituting an armature 20 of distribution winding along with the plurality of winding members 38.

Description

  The present invention relates to a rotating electrical machine, a method for manufacturing a rotating electrical machine, and an armature.

  Conventionally, a distributed winding type armature including a core member having a plurality of tooth portions and a plurality of windings having a winding portion wound around the core member is known (for example, a patent) Reference 1).

Japanese Patent No. 3625202

  In such an armature, when winding the winding around the core member, there is a case where the umbrella portion formed at the tip portion of the tooth portion becomes an obstacle. In this case, the space factor of the winding part may be lowered, and the position of the end part (coil end) of the winding part in the axial direction of the armature may be increased.

  Therefore, the present invention can improve the space factor of the winding winding part, and can reduce the position of the end of the winding winding part in the axial direction of the armature to be low. An object of the present invention is to provide a manufacturing method and an armature.

  In order to achieve the above object, the rotating electrical machine according to claim 1 has a winding part wound in an annular shape and a sealing resin for sealing the winding part, respectively. As a whole, it is formed in an annular shape along the circumferential direction of the winding winding part, and a plurality of winding members arranged in a spiral shape and a plurality of winding members are inserted inside each of the plurality of winding members. And a core member that constitutes a distributed winding type armature together with the plurality of winding members.

  According to this rotating electric machine, for example, the armature can be assembled in the following manner. That is, first, a wire is wound in an annular shape to form a winding winding part. Next, a sealing resin for sealing the winding winding part is formed integrally with the winding winding part, and a plurality of winding members having the winding winding part and the sealing resin are formed. Then, in a state where the plurality of winding members are arranged in a spiral shape, a plurality of teeth portions are inserted into each of the plurality of winding members. In the above manner, a distributed winding type armature including a plurality of winding members and a core member having a plurality of teeth portions can be assembled.

  Here, in this rotating electrical machine, as described above, the winding member having the winding portion can be manufactured separately from the core member (the winding member can be formed independently). Therefore, even when an umbrella part is formed at the tip of the tooth part, it is possible to avoid the umbrella part from interfering when forming the winding winding part, and the wire rods in order from the inside to the outside. A winding winding part can be formed by overlapping. Thereby, while being able to improve the space factor of a coil | winding winding part, the position of the edge part (coil end) of the coil | winding winding part in the axial direction of an armature can be restrained low.

  The rotating electrical machine according to claim 2 is the rotating electrical machine according to claim 1, wherein the core member has a core main body disposed inside the plurality of winding members, and the plurality of teeth portions are In addition to being configured separately from the core body, the core body is arranged radially around the core body.

  According to this rotating electrical machine, the plurality of teeth are configured separately from the core main body disposed inside the plurality of winding members. Therefore, in a state where the core main body portion is disposed inside the plurality of winding members, the teeth portion can be inserted into the inside of each annular winding member from the outside of the plurality of winding members (the radially outer side of the core member). it can. Thereby, an armature can be assembled easily.

  The rotating electrical machine according to claim 3 is the rotating electrical machine according to claim 2, wherein the core main body portion is formed with a fitted portion at a position corresponding to a base end portion of the teeth portion, and the teeth portion The base end portion is formed with a fitting portion that is fitted to the fitted portion.

  According to this rotating electrical machine, the core body portion has the fitted portion formed at a position corresponding to the base end portion of the teeth portion, and the fitting portion is formed at the base end portion of the teeth portion. Yes. Therefore, the tooth portion can be fixed to the core body portion by fitting the fitting portion to the fitted portion.

  The rotating electrical machine according to claim 4 is the rotating electrical machine according to claim 2 or 3, further comprising a restraining member formed in an annular shape along a circumferential direction of the core member, and inside the restraining member, It is set as the structure by which the front-end | tip part of these teeth part which forms the external shape part of the said core member was press-fit.

  According to this rotating electrical machine, the tip portions of the plurality of tooth portions forming the outer shape portion of the core member are press-fitted inside the annularly formed restraining member. Therefore, since the movement of the tooth part to the radially outer side of the core member can be restricted by this restraining member, it is possible to suppress the drop of the tooth part from the core body part.

  The rotating electrical machine according to claim 5 is the rotating electrical machine according to any one of claims 2 to 4, wherein each of the plurality of winding members includes the plurality of teeth portions of the core member. The positioning part for positioning in the circumferential direction is provided.

  According to this rotating electrical machine, each of the plurality of winding members is provided with a positioning portion, and the plurality of teeth portions can be positioned in the circumferential direction of the core member by the positioning portion.

  The rotating electrical machine according to claim 6 is the rotating electrical machine according to claim 5, wherein a tip portion of the tooth portion is formed with an umbrella portion that extends in a circumferential direction of the core member, and the positioning portion includes the plurality of positioning portions. The plurality of teeth portions are positioned in the circumferential direction of the core member by interposing the positioning portions between the adjacent umbrella portions. It is configured.

  According to this rotating electrical machine, the plurality of teeth portions are disposed in the circumferential direction of the core member by interposing the positioning portions formed in a convex shape protruding from the outer peripheral surfaces of the plurality of winding members between the adjacent umbrella portions. Therefore, the positioning accuracy of the plurality of tooth portions (umbrella portions) can be ensured.

  The rotating electrical machine according to claim 7 is the rotating electrical machine according to claim 5 or 6, wherein the positioning portion is formed by integral molding with the sealing resin.

  According to this rotating electrical machine, since the positioning portion is formed by integral molding with the sealing resin, it is possible to suppress an increase in manufacturing steps and, consequently, an increase in cost.

  The rotating electrical machine according to claim 8 is the rotating electrical machine according to any one of claims 2 to 7, wherein the core member is formed with a plurality of slots formed between the plurality of teeth portions. The winding member is formed in an annular shape having a pair of longitudinal sides extending in the axial direction of the core member and a pair of lateral sides connecting both ends of the pair of longitudinal sides, One of the longitudinal sides of one winding member of the winding members penetrates one slot of the plurality of slots in the axial direction of the core member, and the other winding of the plurality of winding members. The other vertical side portion of the wire member passes through the one slot in the axial direction of the core member, and is combined in the radial direction of the one vertical side portion and the core member of the one winding member. It has been configured.

  According to this rotating electrical machine, one of the plurality of slots has one longitudinal side portion of one winding member and the other longitudinal side portion of the other winding member in the axial direction of the core member. In addition, one vertical side portion of the one winding member and the other vertical side portion of the other winding member are combined in the radial direction of the core member. Therefore, with this configuration, it is possible to ensure the number of conductor portions of the winding portion in the slot.

  The rotating electrical machine according to claim 9 is the rotating electrical machine according to claim 8, wherein the one vertical side portion of the one winding member and the other vertical side portion of the other winding member are An accommodating portion accommodated in the one slot, and the accommodating portion is formed in a tapered shape along a pair of teeth portions forming the one slot among the plurality of teeth portions. ing.

  According to this rotating electrical machine, one longitudinal side portion of one winding member and the other longitudinal side portion of the other winding member constitute an accommodating portion accommodated in one slot. This accommodating part is formed in a taper shape along a pair of teeth part which forms one slot. Therefore, with this configuration, the cross-sectional area of the accommodating portion (the cross-sectional area perpendicular to the axial direction of the core member) is ensured in the slot. This also allows the conductor portion of the winding portion in the slot. The number can be secured.

  The rotating electrical machine according to claim 10 is the rotating electrical machine according to claim 9, wherein a tip portion of the tooth portion is formed with an umbrella portion extending in a circumferential direction of the core member, and the housing portion is the umbrella portion. It is set as the structure restrained to the radial direction of the said core member by the part and the said core main-body part.

  According to this rotating electrical machine, the housing part is restrained in the radial direction of the core member by the umbrella part and the core body part. Therefore, it can suppress that the winding member which forms an accommodating part rattles with respect to a core member.

  The rotating electrical machine according to claim 11 is the rotating electrical machine according to any one of claims 1 to 10, wherein the winding member is on the outer peripheral side of the core member as viewed in the axial direction of the core member. It is configured to be curved so as to form a convex shape.

  According to this rotating electrical machine, the winding member is formed to be curved so as to protrude toward the outer peripheral side of the core member as viewed in the axial direction of the core member. Accordingly, the gaps between the plurality of winding members arranged in a spiral shape can be narrowed, so that the armature, and thus the rotating electrical machine can be reduced in size.

  The rotating electrical machine according to claim 12 is the rotating electrical machine according to any one of claims 1 to 11, wherein the winding member is continuous with the winding winding part and protrudes from the sealing resin. It is set as the structure which has the coil | winding terminal part to perform.

  According to this rotating electrical machine, the winding member has a winding terminal portion that is continuous with the winding winding portion and protrudes from the sealing resin. Therefore, for example, when the rotating electrical machine is a brushed DC motor, the commutator and the winding winding part can be electrically connected by connecting the winding terminal part to the commutator. In addition, for example, when the rotating electrical machine is an outer rotor type brushless motor, the winding terminal portions can be connected to each other by connecting the winding terminal portions to a connecting member such as a bus bar, and the winding terminals. Can be connected to the control circuit.

  In order to achieve the above object, a method of manufacturing a rotating electrical machine according to claim 13 includes a step of winding a wire in a ring shape to form a winding winding portion, and sealing the winding winding portion. By forming the sealing resin to be integrally formed with the winding winding part, the winding winding part and the sealing resin are provided, and the ring shape along the circumferential direction of the winding winding part as a whole A plurality of winding members are inserted inside each of the plurality of winding members in a state in which a plurality of winding members are arranged in a spiral shape. And assembling the distributed winding type armature including the plurality of winding members and the core member having the plurality of teeth portions.

  According to this method of manufacturing a rotating electrical machine, the winding member having the winding portion is manufactured separately from the core member. Therefore, even when an umbrella part is formed at the tip of the tooth part, it is possible to avoid the umbrella part from interfering when forming the winding winding part, and the wire rods in order from the inside to the outside. A winding winding part can be formed by overlapping. Thereby, while being able to improve the space factor of a coil | winding winding part, the position of the edge part (coil end) of the coil | winding winding part in the axial direction of an armature can be restrained low.

  In order to achieve the above object, the armature according to claim 14 includes a winding part wound in an annular shape and a sealing resin for sealing the winding part. And a plurality of winding members formed in a ring shape along the circumferential direction of the winding winding portion as a whole and arranged in a spiral shape, and a plurality of winding members inside each of the plurality of winding members. And a core member having a plurality of inserted tooth portions.

  According to this armature, the winding member having the winding portion can be manufactured separately from the core member (the winding member can be formed independently). Therefore, even when an umbrella part is formed at the tip of the tooth part, it is possible to avoid the umbrella part from interfering when forming the winding winding part, and the wire rods in order from the inside to the outside. A winding winding part can be formed by overlapping. Thereby, while being able to improve the space factor of a coil | winding winding part, the position of the edge part (coil end) of the coil | winding winding part in the axial direction of an armature can be restrained low.

It is a longitudinal cross-sectional view of the rotary electric machine which concerns on one Embodiment of this invention. It is a perspective view of the armature main body shown by FIG. FIG. 3 is a perspective view of a winding member shown in FIG. 2. FIG. 4 is a cross-sectional view taken along line 4-4 of FIG. FIG. 4 is a perspective view of a winding winding part shown in FIG. 3. It is a top view of the core member shown by FIG. It is a figure explaining the assembly | attachment process of the some winding member shown by FIG. 2, and a core member. FIG. 3 is a cross-sectional view of a plurality of winding members shown in FIG. 2. It is a perspective view explaining a mode that a restraint member is assembled | attached to the core member shown by FIG. FIG. 3 is an enlarged vertical cross-sectional view of a main part of the armature body shown in FIG. 2. It is a figure explaining the manufacturing process of the coil | winding member shown by FIG. It is a perspective view which shows the modification of the winding member which concerns on one Embodiment of this invention. It is a cross-sectional view of the winding member shown in FIG. FIG. 13 is a perspective view showing a state in which a plurality of winding members shown in FIG. 12 are arranged in a spiral shape. It is a perspective view which shows the state which assembled | attached the core member to the some winding member shown by FIG. 14, and comprised the armature main body. It is a principal part expanded horizontal sectional view of the armature main body shown by FIG. It is a longitudinal cross-sectional view which shows the modification of the rotary electric machine which concerns on one Embodiment of this invention. It is a perspective view of the armature main body shown by FIG.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  A rotating electrical machine 10 according to an embodiment of the present invention shown in FIG. 1 is a brushed DC motor, and includes a stator 12, a front housing 14, an end housing 16, a brush device 18, and an armature 20 as a rotor. It has.

  The stator 12 has a yoke 22 and a magnet 24. The yoke 22 is formed in a cylindrical shape, and the magnet 24 is fixed to the inner peripheral surface of the yoke 22. The front housing 14 is fixed to an end portion on one axial side of the yoke 22, and the end housing 16 is fixed to an end portion on the other axial side of the yoke 22. The brush device 18 is fixed to the front housing 14 and has a brush 26. The brush 26 is in contact with a commutator 30 provided on the armature 20 described later.

  The armature 20 is a distributed winding type armature, as will be described later, and includes a shaft 28, a commutator 30, and an armature body 32. The shaft 28 is rotatably supported by a pair of bearings 34 and 36 provided in the front housing 14 and the end housing 16, and the commutator 30 and the armature body 32 are fixed to the shaft 28. In FIG. 1, the armature body 32 is shown in a simplified manner.

  Next, a more specific configuration of the armature body 32 will be described.

  As shown in FIG. 2, the armature body 32 includes a plurality of winding members 38 and a core member 40. As shown in FIGS. 3 and 4, each winding member 38 includes a winding winding portion 42 (see also FIG. 5) formed by winding a wire in an annular shape, and this winding winding portion 42. And a sealing resin 44 for sealing each. As shown in FIG. 3, the winding member 38 is formed in an annular shape along the circumferential direction of the winding winding portion 42 as a whole. That is, the winding member 38 includes a pair of vertical side portions 46A and 46B extending in an arrow Z direction that is an axial direction of a core member 40 (see FIG. 2 and the like) described later, and It has a pair of lateral sides 48A and 48B connecting both ends.

  As shown in FIG. 2, the plurality of winding members 38 are arranged in a spiral shape when viewed in the axial direction of the core member 40 (same as viewed in the axial direction of the armature 20 in FIG. 1). That is, each of the plurality of winding members 38 is provided around the center portion of the core member 40 and is also on one side in the circumferential direction of the core member 40 (in the direction of arrow R1) from the radially inner side to the outer side of the core member 40. It is arranged to go to.

  Further, each winding member 38 is formed to be curved so as to protrude toward the outer peripheral side of the core member 40 when viewed in the axial direction of the core member 40, and the adjacent winding members 38 are adjacent to each other. They are overlapped with each other with a slight shift in the circumferential direction (the shift amount will be described later). Each winding member 38 has a winding terminal portion 50 that protrudes from the sealing resin 44 to one side in the axial direction of the core member 40. The winding terminal portion 50 is formed continuously with the above-described winding winding portion 42 (see FIGS. 3 to 5).

  As shown in FIG. 6, the core member 40 includes a core body portion 52 that is substantially circular in an axial view, and a plurality of teeth portions 54 that are radially arranged around the core body portion 52. ing. As shown in FIG. 2, the core main body 52 is disposed inside the plurality of winding members 38 arranged in a spiral shape. A through hole 56 penetrating in the axial direction of the core main body portion 52 is formed in the axial core portion of the core main body portion 52. The shaft 28 (see FIG. 1) is press-fitted into the through hole 56.

  The plurality of tooth portions 54 are configured separately from the core main body portion 52. In the present embodiment, as an example, the number of the plurality of tooth portions 54 is 16. As shown in FIG. 6, each tooth portion 54 includes a shaft portion 58 and an umbrella portion 60, and is formed in a substantially T shape when the core member 40 is viewed in the axial direction. The umbrella part 60 is formed at the tip of the tooth part 54 and extends in the circumferential direction of the core member 40.

  Further, the core body portion 52 is formed with a concave fitted portion 62 at a position corresponding to the base end portion of the tooth portion 54, and the base end portion of the tooth portion 54 has a convex fitting portion. 64 is formed. The fitting part 64 is fitted to the fitted part 62, whereby the tooth part 54 is fixed to the core body part 52.

  A slot 66 is formed between each of the plurality of tooth portions 54. As shown in FIG. 7, one vertical side portion 46 </ b> A of one winding member 38 among the plurality of winding members 38 penetrates one slot 66 of the plurality of slots 66 in the axial direction of the core member 40. doing. In addition, the other vertical side portion 46B of the other winding member 38 among the plurality of winding members 38 penetrates the one slot 66 in the axial direction of the core member 40, and in the one winding member 38. One vertical side 46A and the core member 40 are combined in the radial direction.

  That is, more specifically, the one vertical side portion 46A is combined with the other vertical side portion 46B in a state of being positioned on the radially inner side of the core member 40 with respect to the other vertical side portion 46B. One vertical side portion 46 </ b> A is formed in an isosceles triangular section that tapers as it goes inward in the radial direction of the core member 40, and the other vertical side portion 46 </ b> B goes inward in the radial direction of the core member 40. It is formed in a trapezoidal shape with a narrow cross section (see also FIGS. 4 and 8).

  The one vertical side portion 46A of the one winding member 38 and the other vertical side portion 46B of the other winding member 38 are combined with each other, so that the accommodating portion 68 accommodated in the one slot 66 is obtained. It is composed. The accommodating portion 68 is tapered along the pair of tooth portions 54 forming one slot 66 of the plurality of tooth portions 54 (more specifically, tapering toward the radially inner side of the core member 40). The cross section isosceles triangle shape).

  As shown in the lower diagram of FIG. 7, the portion of the housing portion 68 on the core body portion 52 side is in contact with the outer peripheral surface of the core body portion 52, and the portion of the housing portion 68 on the umbrella portion 60 side is The abutting portion 60 is in contact with the inner surface of the umbrella portion 60. As a result, the accommodating portion 68 is restrained in the radial direction of the core member 40 by the umbrella portion 60 and the core main body portion 52.

  Further, as described above, the adjacent winding members 38 are overlapped with each other in a state slightly shifted in the circumferential direction of the core member 40. In the present embodiment, as shown in FIG. As an example, the amount of shift between the adjacent winding members 38 is set so that one tooth portion 54 (shaft portion 58) can be inserted between the other adjacent vertical side portions 46B.

  Further, in the present embodiment, as shown in FIG. 8, inside one winding member 38 formed in an annular shape (between the vertical side portion 46A and the vertical side portion 46B in one winding member 38). As an example, the length in the horizontal width direction of each winding member 38 (the longitudinal direction of the horizontal side portions 48A and 48B in FIG. 3) so that two accommodating portions 68 formed by other winding members 38 are arranged. Length) is set.

  And inside the one coil | winding member 38, it arrange | positions between the accommodating part 68 in which one vertical side part 46A is contained, the accommodating part 68 in which the other vertical side part 46B is contained, and these accommodating parts 68. A plurality of gaps 70 (that is, three gaps 70) are formed by the other accommodating portions 68 formed, and the teeth portions 54 are inserted into these gaps 70 as shown in FIG. Yes. Further, the plurality of teeth portions 54 are inserted into the inside of each of the plurality of winding members 38 in this way, so that the plurality of winding members 38 and the core member 40 are distributed. An armature body 32 of the type of armature is configured.

  As shown in FIG. 9, the core member 40 is provided with a restraining member 72 formed in an annular shape along the circumferential direction of the core member 40. The constraining member 72 has an L-shaped cross section, and has an annular radial constraining portion 74 having a radial direction of the core member 40 as a plate thickness direction, and an end on one axial direction side of the radial constraining portion 74. And an axial contact portion 76 extending radially inward from the portion. And the front-end | tip part (several arcuate umbrella part 60) of the some teeth part 54 which forms the external shape part of the core member 40 is press-fitted inside this restraint member 72 (radial direction restraint part 74). In addition, in a state where the tips of the plurality of tooth portions 54 are press-fitted to a predetermined position inside the restraining member 72, the axial contact portion 76 contacts the axial end surface of the core member 40.

  Further, as shown in FIG. 10, a plurality of convex portions are formed on the inner side surface 46B1 (the surface portion of the sealing resin 44 in contact with the shaft portion 58 of the tooth portion 54) of the other vertical side portion 46B shown in FIG. 78 is formed. The plurality of convex portions 78 extend in a direction orthogonal to the conductor portion 42 </ b> A located in the vertical side portion 46 </ b> B of the winding winding portion 42. Although not particularly illustrated, the same convexity as the convex portion 78 is formed on the outer side surface 46B2 of the other vertical side portion 46B shown in FIG. 4 and the inner side surface 46A1 and the outer side surface 46A2 of the one vertical side portion 46A. The part is formed.

  Next, a method for manufacturing the above-described rotating electrical machine 10 will be described.

  First, as shown in the upper diagram of FIG. 11, a core 82 having a protrusion 86 formed in the same shape as the above-described teeth portion 54 (see FIG. 2 and the like) is used. The wire winding part 42 is formed by winding a wire around the protrusion 86 in an annular shape. In addition, when this wire is wound in an annular shape, a flyer winding machine having a former is used. At this time, the winding winding part 42 is formed by overlapping the wire materials in order from the inside to the outside. Subsequently, as shown in the middle diagram of FIG. 11, the winding portion 42 is shaped into a predetermined shape by setting the cavity 84 in the core 82 and clamping it.

  Next, as shown in the lower diagram of FIG. 11, molten resin is injected into the mold 80 constituted by the core 82 and the cavity 84. Then, by solidifying the molten resin, a sealing resin 44 that seals the winding portion 42 is formed integrally with the winding portion 42. Thereby, the winding member 38 having the winding winding part 42 and the sealing resin 44 is formed. A plurality of mold portions 88 for forming a plurality of winding members 38 are formed in the mold 80, and the plurality of winding members 38 are formed by one molding. Note that the winding terminal portion 50 shown in FIG. 3 is set in the mold 80 shown in FIG. 11 in a state derived from the winding winding portion 42. In the mold 80, the sealing resin 44 is molded so that the winding terminal portion 50 protrudes from the sealing resin 44.

  Subsequently, as shown in FIG. 8, a plurality of winding members 38 are arranged in a spiral shape using a jig or the like. In this state, as shown in FIG. 7, a plurality of teeth portions 54 are inserted inside each of the plurality of winding members 38 (that is, between adjacent accommodating portions 68). Insert the tooth portions 54 in the gaps). Further, the armature main body 32 is formed by press-fitting the distal end portions of the plurality of tooth portions 54 forming the outer shape portion of the core member 40 inside the restraining member 72 (see FIG. 9).

  Further, the shaft 28 shown in FIG. 1 is press-fitted into the through hole 56 of the core member 40, and the commutator 30 is assembled to the shaft 28. Further, as shown in FIG. 2, the winding terminal portion 50 protruding from the sealing resin 44 is connected to the commutator 30 shown in FIG. The distributed winding type armature 20 is manufactured in the manner described above.

  The rotating electrical machine 10 is manufactured by assembling the armature 20, the stator 12, the front housing 14, the end housing 16, and the brush device 18 in an appropriate order.

  Next, the operation and effect of one embodiment of the present invention will be described.

  As described in detail above, according to the present embodiment, the winding member 38 having the winding portion 42 can be manufactured separately from the core member 40 (the winding member 38 is formed independently). be able to). Therefore, even when the umbrella portion 60 is formed at the tip portion of the tooth portion 54, the umbrella portion 60 can be prevented from becoming an obstacle when forming the winding winding portion 42, and the wire rod The winding winding part 42 can be formed by sequentially stacking from the outer side to the outer side. Thereby, the space factor of the winding winding part 42 can be improved, and the position of the end part (coil end) of the winding winding part 42 in the axial direction of the armature 20 can be kept low.

  Further, as described above, by forming the winding member 38 alone, the winding winding portion 42 can be easily formed, and the structure of the winding winding portion 42 can be simplified. . Thereby, an increase in cost can be suppressed.

  Further, the plurality of tooth portions 54 are configured separately from the core main body portion 52 disposed inside the plurality of winding members 38 (see FIG. 7 and the like). Therefore, in a state where the core main body portion 52 is disposed inside the plurality of winding members 38, the teeth portion extends from the outside of the plurality of winding members 38 (the radially outer side of the core member 40) to the inside of each annular winding member 38. 54 can be inserted. Thereby, the armature 20 (armature main body 32) can be assembled easily.

  The core body 52 has a fitted portion 62 formed at a position corresponding to the base end portion of the tooth portion 54, and a fitting portion 64 is formed at the base end portion of the tooth portion 54. (Refer to FIG. 6 etc.). Therefore, the tooth part 54 can be fixed to the core body part 52 by fitting the fitting part 64 to the fitted part 62.

  Moreover, the front-end | tip part of the some teeth part 54 which forms the external shape part of the core member 40 is press-fit inside the restraint member 72 formed cyclically | annularly (refer FIG. 9). Accordingly, the movement of the tooth portion 54 to the radially outer side of the core member 40 can be restricted by the restraining member 72, so that the drop of the tooth portion 54 from the core main body portion 52 can be suppressed.

  In addition, in one slot 66 of the plurality of slots 66, one vertical side portion 46 </ b> A of one winding member 38 and the other vertical side portion 46 </ b> B of the other winding member 38 are respectively included in the core member 40. Furthermore, one longitudinal side portion 46A of the one winding member 38 and the other longitudinal side portion 46B of the other winding member 38 are combined in the radial direction of the core member 40. ing. Therefore, with this configuration, it is possible to secure the number of conductor portions 42 </ b> A of the winding winding portion 42 in the slot 66.

  In addition, one vertical side portion 46 </ b> A in one winding member 38 and the other vertical side portion 46 </ b> B in the other winding member 38 constitute an accommodating portion 68 accommodated in one slot 66. The accommodating portion 68 is formed in a tapered shape along a pair of teeth portions 54 that form one slot 66 (see FIG. 7). Therefore, this configuration secures the cross-sectional area of the accommodating portion 68 (the area of the cross section perpendicular to the axial direction of the core member 40) in the slot 66, and this also makes the winding winding portion in the slot 66. The number of the 42 conductor portions can be ensured.

  The accommodating portion 68 is restrained in the radial direction of the core member 40 by the umbrella portion 60 and the core main body portion 52. Accordingly, it is possible to suppress the winding member 38 forming the housing portion 68 from rattling with respect to the core member 40.

  Further, the winding member 38 is formed to be curved so as to protrude toward the outer peripheral side of the core member 40 when viewed in the axial direction of the core member 40 (see FIGS. 2 to 4). Accordingly, the gaps between the plurality of winding members 38 arranged in a spiral shape can be narrowed, so that the armature 20 and thus the rotating electrical machine 10 can be reduced in size.

  Further, the winding member 38 has a winding terminal portion 50 that continues from the winding portion 42 and protrudes from the sealing resin 44 (see FIG. 2). Therefore, for example, when the rotating electrical machine 10 is a DC motor with a brush as in this embodiment, the commutator 30 and the winding winding unit 42 are connected by connecting the winding terminal unit 50 to the commutator 30. Can be electrically connected.

  Further, a plurality of convex portions 78 are formed on the surface portion of the sealing resin 44 in contact with the tooth portion 54 (see FIG. 10). Accordingly, since the gap between the tooth portion 54 and the winding portion 42 can be secured by the convex portion 78, the insulation of the tooth portion 54 can be secured.

  Further, even when the wire diameter of the wire and the number of turns of the winding winding part 42 are different, if the outer shape of the winding winding part 42 is kept constant, the wire diameter of the wire and the number of turns of the winding winding part 42 The winding winding portions 42 having different specifications can be manufactured with the same mold. Thereby, cost can be reduced.

  Next, a modification of one embodiment of the present invention will be described.

  In the present embodiment, as an example, the number of the plurality of teeth portions 54 is 16, but other numbers may be used.

  Moreover, although the to-be-fitted part 62 formed in the core main-body part 52 was formed in concave shape, the fitting part 64 formed in the base end part of the teeth part 54 was formed in convex shape, The joining portion 62 may be formed in a convex shape, and the fitting portion 64 may be formed in a concave shape.

  As shown in FIGS. 12 to 16, each of the plurality of winding members 38 may be provided with a positioning portion 49 that positions the plurality of tooth portions 54 in the circumferential direction of the core member 40. More specifically, the positioning portion 49 is formed integrally with the sealing resin 44, and has an outer peripheral surface (that is, has a trapezoidal cross section as shown in FIG. 13). It is formed in a convex shape protruding from the outer peripheral surface 46B3) of the other formed vertical side portion 46B. The positioning portion 49 is formed in a tapered shape so as to narrow toward the end in the protruding direction (as it goes outward in the radial direction of the core member 40), and protrudes along the axial direction of the core member 40. It is formed into a strip.

  As shown in FIGS. 15 and 16, the plurality of teeth portions 54 are arranged such that the positioning portions 49 are interposed between the adjacent umbrella portions 60 (the adjacent umbrella portions 60 are respectively in contact with the positioning portions 49. By being in contact with each other), the core member 40 is positioned in the circumferential direction.

  As described above, when the positioning portions 49 are provided in each of the plurality of winding members 38, the plurality of teeth portions 54 can be positioned in the circumferential direction of the core member 40 by the positioning portions 49.

  Moreover, in this modification, the positioning part 49 formed in the convex shape which protrudes from the outer peripheral surface (outer peripheral surface 46B3) in the several winding member 38 is interposed between the adjacent umbrella parts 60, and thereby a plurality of Since the teeth portion 54 is positioned in the circumferential direction of the core member 40, the positioning accuracy of the plurality of teeth portions 54 (pitch accuracy in the circumferential direction of the umbrella portion 60) can be ensured.

  Moreover, since the positioning portion 49 is formed integrally with the sealing resin 44, it is possible to suppress an increase in manufacturing steps and, consequently, an increase in cost.

  In the present embodiment, the rotary electric machine 10 is a brushed DC motor. However, as shown in FIG. 17, the rotary electric machine 10 may be an outer rotor type brushless motor. In the modification shown in FIG. 17, the rotating electrical machine 10 includes a rotor 90 having a magnet 92 in addition to the armature 20 as the stator 12. In this modification, the winding terminal 50 is connected to a connecting member 94 such as a bus bar shown in FIG. Thus, the winding terminal portions 50 are connected to each other, and the winding terminal portion 50 is connected to a control circuit (not shown).

  Although one embodiment of the present invention has been described above, the present invention is not limited to the above, and other various modifications can be made without departing from the spirit of the present invention. It is.

DESCRIPTION OF SYMBOLS 10 ... Rotary electric machine, 12 ... Stator, 14 ... Front housing, 16 ... End housing, 18 ... Brush apparatus, 20 ... Armature, 22 ... Yoke, 24. .. Magnet, 26 ... Brush, 28 ... Shaft, 30 ... Commutator, 32 ... Armature body, 34, 36 ... Bearing, 38 ... Winding member, 40 ... -Core member, 42 ... Winding winding part, 42A ... Conductor part, 44 ... Sealing resin, 46A, 46B ... Vertical side part, 48A, 48B ... Horizontal side part, 49 ... Positioning part, 50 ... Winding terminal part, 52 ... Core body part, 54 ... Teeth part, 56 ... Through hole, 58 ... Shaft part, 60 ... Umbrella part 62 ... mated part, 64 ... fitting part, 66 ... slot, 68 ... accommodating part, 70 ... gap, 7・ ・ ・ Restraining member, 74 ・ ・ ・ Radial restraint portion, 76 ・ ・ ・ Axial contact portion, 78 ・ ・ ・ Projection, 80 ・ ・ ・ Mold, 82 ・ ・ ・ Core, 84 ・ ・ ・ Cavity 86 ... Projection part, 88 ... Mold part, 90 ... Rotor, 92 ... Magnet, 94 ... Connection member

Claims (14)

Each of the winding winding portions wound in an annular shape and a sealing resin that seals the winding winding portion are formed in an annular shape along the circumferential direction of the winding winding portion as a whole. And a plurality of winding members arranged in a spiral shape,
A core member that has a plurality of teeth inserted inside each of the plurality of winding members, and constitutes a distributed winding type armature together with the plurality of winding members;
Rotating electric machine with The core member has a core body portion disposed inside the plurality of winding members,
The plurality of teeth portions are configured separately from the core main body portion, and are arranged radially around the core main body portion.
The rotating electrical machine according to claim 1. In the core body portion, a fitted portion is formed at a position corresponding to the base end portion of the teeth portion,
A fitting portion that is fitted to the fitted portion is formed at the base end portion of the tooth portion.
The rotating electrical machine according to claim 2. Comprising a restraining member formed in an annular shape along the circumferential direction of the core member;
Inside the restraining member, the tip portions of the plurality of teeth portions forming the outer shape portion of the core member are press-fitted,
The rotating electrical machine according to claim 2 or claim 3. Each of the plurality of winding members is provided with a positioning portion that positions the plurality of tooth portions in the circumferential direction of the core member.
The rotary electric machine as described in any one of Claims 2-4. At the tip of the teeth portion, an umbrella portion that extends in the circumferential direction of the core member is formed,
The positioning portion is formed in a convex shape protruding from the outer peripheral surface of the plurality of winding members,
The plurality of teeth portions are positioned in the circumferential direction of the core member by interposing the positioning portion between the adjacent umbrella portions.
The rotating electrical machine according to claim 5. The positioning portion is formed by integral molding with the sealing resin.
The rotating electrical machine according to claim 5 or 6. The core member has a plurality of slots formed between each of the plurality of tooth portions,
The winding member is formed in an annular shape having a pair of vertical sides extending in the axial direction of the core member and a pair of horizontal sides connecting both ends of the pair of vertical sides,
One of the vertical sides of one of the plurality of winding members passes through one of the plurality of slots in the axial direction of the core member,
The other vertical side portion of the other winding member among the plurality of winding members penetrates the one slot in the axial direction of the core member, and the one vertical side of the one winding member. Combined with the radial direction of the core member,
The rotating electrical machine according to any one of claims 2 to 7. The one vertical side portion in the one winding member and the other vertical side portion in the other winding member constitute an accommodating portion accommodated in the one slot,
The accommodating portion is formed in a tapered shape along a pair of teeth portions forming the one slot among the plurality of teeth portions.
The rotating electrical machine according to claim 8. At the tip of the teeth portion, an umbrella portion that extends in the circumferential direction of the core member is formed,
The accommodating portion is restrained in the radial direction of the core member by the umbrella portion and the core body portion.
The rotating electrical machine according to claim 9. The winding member is formed to be curved to form a convex on the outer peripheral side of the core member as viewed in the axial direction of the core member.
The rotating electrical machine according to any one of claims 1 to 10. The winding member has a winding terminal portion that is continuous with the winding winding portion and protrudes from the sealing resin.
The rotating electrical machine according to any one of claims 1 to 11. Winding the wire in a ring to form a winding winding part;
By forming a sealing resin for sealing the winding winding part integrally with the winding winding part, the winding winding part has the winding winding part and the sealing resin. Forming a plurality of annular winding members along the circumferential direction of the turning portion;
In a state where the plurality of winding members are arranged in a spiral shape, a plurality of teeth portions are inserted inside each of the plurality of winding members, the plurality of winding members, and the plurality of winding members, A step of assembling the armature of the distributed winding system comprising a core member having a teeth portion of
The manufacturing method of the rotary electric machine provided with. Each of the winding winding portions wound in an annular shape and a sealing resin that seals the winding winding portion are formed in an annular shape along the circumferential direction of the winding winding portion as a whole. And a plurality of winding members arranged in a spiral shape,
A core member having a plurality of teeth inserted into each of the plurality of winding members;
Armature equipped with.

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