JP2013162726A - Stator and brushless motor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the size and cost of a stator used for a brushless motor.SOLUTION: A stator 10 includes: a plurality of core components 14 which integrally have a plurality of yoke components 22 constituting an annular yoke 40 and divided in the circumferential direction of the yoke 40 and a plurality of tooth parts 24 projecting from the yoke components 22 to the radial inner side of the yoke 40, respectively; a plurality of winding wires 16 having a plurality of winding parts 26 wound around the tooth parts 24, respectively and constituting a U phase, a V phase and a W phase; and a plurality of insulators 18 which have a plurality of insulation parts 32 installed with respect to each U phase, V phase and W phase, integrated with the respective core components 14 and insulating the tooth parts 24 from the winding parts 26 and connection parts 34 installed coaxially with the yoke 40 and connecting the plurality of insulation parts 32.

Description

  The present invention relates to a stator and a brushless motor.

  Conventionally, as a stator used for a brushless motor, for example, there is the following (for example, see Patent Document 1). That is, in the armature described in Patent Document 1, the yoke is constituted by a plurality of ring-shaped yoke components divided in the axial direction, and each yoke component is directed radially outward. A plurality of protruding tooth portions are integrally formed.

JP-A-9-322441

  However, when the technique described in Patent Document 1 is applied to an armature used for an inner rotor type rotating electrical machine, the plurality of teeth protrudes radially inward of each yoke component. . For this reason, it becomes difficult to wind a coil by the fryer of a fryer apparatus from the radial direction outer side of each yoke structure part. Therefore, it is necessary to wind the coil from the radially inner side of each yoke component by the nozzle of the nozzle device. In this case, since it is necessary to secure a space for the nozzle to pass, It is difficult to reduce the size of the rotating electrical machine. In addition, when using a nozzle device, the winding speed of the winding is lower than when using a flyer device, which is disadvantageous for speeding up the coil winding process and thus reducing the number of equipment. It becomes.

  The flyer device is a device in which the coil is aligned with a variable former and wound around the tooth portion while circularly moving the flyer so as to swivel around the tooth portion. It is an apparatus which winds a coil around a tooth part by repeating alternately the process of making it rotate, and the process of sliding a nozzle in the direction of an axis.

  This invention is made | formed in view of the said subject, Comprising: It aims at implement | achieving size reduction and cost reduction about the stator used for a brushless motor.

  In order to solve the above-mentioned problem, the stator according to claim 1 comprises an annular yoke and a plurality of yoke components divided in the circumferential direction of the yoke, and each of the yoke components. A plurality of core components integrally including a plurality of teeth protruding in the radial direction of the yoke; a plurality of windings each including a plurality of winding portions wound around the teeth; and the cores Provided in each of the plurality of insulators, and a plurality of insulators that are integrated into a component part and that have a plurality of insulating parts that insulate the teeth part and the winding part, and that have a connecting part that connects the plurality of insulating parts. And a terminal portion connected to a terminal portion of each of the plurality of windings.

  This stator is manufactured by the following configuration, for example, in the following manner. That is, first, the core constituent part is integrated with the insulating part of each insulator, and a subassembly is formed for each of a plurality of groups. Subsequently, a winding is wound around each tooth portion of each subassembly from the outside in the radial direction by using a flyer device to form a stator constituent portion for each of a plurality of groups. Then, the plurality of stator constituent parts are assembled with each other to form a stator. The stator is manufactured by the above procedure.

  Here, in this stator, the yoke is comprised by the several yoke structure part divided | segmented into the circumferential direction. For this reason, even in the case of a stator used in a brushless motor of a type in which a plurality of teeth are projected in the radial direction of the yoke, as described above, a subassembly is formed for each of a plurality of groups, and each subassembly is formed. A winding can be wound around each of the teeth portions from the outside in the radial direction using a flyer device. Therefore, it is not necessary to secure a space between the tooth portions as in the case of using the nozzle device, so that the space of the windings can be increased, and the stator can be reduced in size.

  Moreover, as described above, since the yoke is divided into a plurality of yoke components in the circumferential direction, for example, compared to a case where the yoke is divided into a plurality of yoke components in the axial direction. The stator can be downsized in the axial direction.

  In addition, when using a flyer device, the winding speed of the winding is higher than when using a nozzle device. Therefore, the cost of the stator can be reduced by increasing the speed of the winding winding process and reducing the number of equipment. Can be realized.

  Each of the plurality of insulators is provided with a terminal portion, and each terminal portion of the plurality of windings is connected to the terminal portion. Therefore, the terminal portion of the winding can be easily positioned.

  A stator according to a second aspect is the stator according to the first aspect, wherein the connecting portion is located on a radially inner side of the yoke, and the joint in at least one of the plurality of insulating portions. At the end opposite to the iron, a protruding portion protruding toward the yoke with respect to the connecting portion is formed, and the terminal portion is provided on the protruding portion.

  According to this stator, since the terminal portion is provided in the protruding portion that protrudes toward the yoke with respect to the connecting portion, the interference between the terminal portion and the connecting portion can be suppressed, and the terminal portion can be easily formed. Can be positioned.

  The stator according to claim 3 is the stator according to claim 2, wherein an insertion groove that opens in the axial direction of the yoke is formed in the protruding portion, and the terminal portion is inserted into the insertion groove. It is set as the structure.

  According to this stator, the terminal portion can be easily fixed to the protruding portion by inserting the terminal portion into the insertion groove formed in the protruding portion.

  The stator according to claim 4 is the stator according to claim 2 or 3, wherein the connecting portion is arranged so as to be shifted in the axial direction of the yoke with respect to the plurality of insulating portions, and the terminal portion. However, it is set as the structure contact | abutted to the surface by the side of the said yoke in the said connection part.

  According to this stator, since the terminal portion is in contact with the surface of the connecting portion on the side of the yoke, rattling of the terminal portion can be suppressed.

  The stator according to claim 5 is the stator according to any one of claims 1 to 4, wherein each of the plurality of windings connects the plurality of winding portions to the insulating portion. On the other hand, it has a connecting wire that is shifted in the axial direction of the yoke, and the terminal portion is provided on the opposite side of the connecting wire in the axial direction of the yoke.

  According to this stator, since the terminal portion is provided on the side opposite to the connecting wire in the axial direction of the yoke, the terminal portion and the control circuit portion can be easily connected on the side opposite to the connecting wire.

  Moreover, in order to solve the said subject, the stator of Claim 6 comprises the several yoke structure part divided | segmented into the circumferential direction of the said yoke while comprising the annular yoke, and each said yoke structure A plurality of core constituent portions integrally including a plurality of teeth portions protruding in the radial direction of the yoke from a portion, a plurality of windings each including a plurality of winding portions wound around the teeth portions, and Each of the plurality of insulators having a plurality of insulating portions integrated with each core constituent portion and insulating the teeth portion and the winding portion, and having a connecting portion connecting the plurality of insulating portions. And a terminal portion connected to each terminal portion of the plurality of windings.

  This stator is manufactured in the same manner as the stator according to claim 1 described above. Therefore, it is not necessary to secure a space between the tooth portions as in the case of using the nozzle device, so that the space of the windings can be increased, and the stator can be reduced in size.

  Moreover, since the yoke is divided into a plurality of yoke components in the circumferential direction, for example, the stator is axially compared to a case where the yoke is divided into a plurality of yoke components in the axial direction. Can be reduced in size.

  In addition, when using a flyer device, the winding speed of the winding is higher than when using a nozzle device. Therefore, the cost of the stator can be reduced by increasing the speed of the winding winding process and reducing the number of equipment. Can be realized.

  Each of the plurality of insulators is formed with a guide portion along the axial direction of the yoke, and each terminal portion of the plurality of windings is guided by the guide portion. Therefore, the terminal portion of the winding can be easily positioned.

  A stator according to a seventh aspect is the stator according to the sixth aspect, wherein the connecting portion is located on a radially inner side of the yoke and the joint in at least one of the plurality of insulating portions. At the end opposite to the iron, there is formed a protruding portion that protrudes toward the yoke with respect to the connecting portion and has a side surface facing the circumferential direction of the yoke, and the guide portion is the side surface. It is set as the structure provided in.

  According to this stator, since the guide portion is provided in the protruding portion that protrudes toward the yoke with respect to the connecting portion, the terminal portion can be easily suppressed by suppressing interference between the terminal portion and the connecting portion. Can be positioned.

  Moreover, in order to solve the said subject, the stator of Claim 8 comprises the several yoke structure part divided | segmented into the circumferential direction of the said yoke while comprising the annular yoke, and each said yoke structure A plurality of core constituent portions integrally including a plurality of teeth portions protruding in the radial direction of the yoke from a portion, a plurality of windings each including a plurality of winding portions wound around the teeth portions, and A plurality of insulators integrated with each core constituent part to insulate the teeth part and the winding part, a plurality of insulators having a connecting part for connecting the plurality of insulating parts, and the plurality of yoke configurations And a terminal portion connected to a terminal portion of each of the plurality of windings.

  This stator is manufactured in the same manner as the stator according to claim 1 described above. Therefore, it is not necessary to secure a space between the tooth portions as in the case of using the nozzle device, so that the space of the windings can be increased, and the stator can be reduced in size.

  Moreover, since the yoke is divided into a plurality of yoke components in the circumferential direction, for example, the stator is axially compared to a case where the yoke is divided into a plurality of yoke components in the axial direction. Can be reduced in size.

  In addition, when using a flyer device, the winding speed of the winding is higher than when using a nozzle device. Therefore, the cost of the stator can be reduced by increasing the speed of the winding winding process and reducing the number of equipment. Can be realized.

  Moreover, the terminal part is provided in either of several yoke structure parts, and the terminal part of each of several coil | winding is connected to this terminal part. Therefore, the terminal portion of the winding can be easily positioned.

  The stator according to claim 9 is the stator according to claim 8, wherein an insertion groove that opens in an axial direction of the yoke is formed in any of the plurality of yoke components, and the terminal portion is , And is inserted into the insertion groove.

  According to this stator, the terminal portion can be easily fixed to the yoke component by inserting the terminal portion into the insertion groove formed in the yoke component.

  Moreover, in order to solve the said subject, the stator of Claim 10 is comprised of the several yoke structure part divided | segmented into the circumferential direction of the said yoke while comprising the annular yoke, and each said yoke structure A plurality of core constituent portions integrally including a plurality of teeth portions protruding in the radial direction of the yoke from a portion, a plurality of windings each including a plurality of winding portions wound around the teeth portions, and A plurality of insulators that are integrated with each core constituent part and insulate the teeth part and the winding part, and have a plurality of insulators that have connecting parts that connect the plurality of insulating parts. The insulating part in at least one of the insulators is located on the radially inner side of the core constituent part, an insulating main body part that is integrated with each core constituent part and insulates the teeth part and the winding part. When Extending from the insulating main body in the axial direction, the radial direction, and the circumferential direction of the yoke, or a combination thereof, and the connecting portion includes the plurality of insulating portions. The extension portions are connected to each other, and each of the plurality of insulators is provided with a terminal portion connected to each terminal portion of the plurality of windings.

  This stator is manufactured in the same manner as the stator according to claim 1 described above. Therefore, it is not necessary to secure a space between the tooth portions as in the case of using the nozzle device, so that the space of the windings can be increased, and the stator can be reduced in size.

  Moreover, since the yoke is divided into a plurality of yoke components in the circumferential direction, for example, the stator is axially compared to a case where the yoke is divided into a plurality of yoke components in the axial direction. Can be reduced in size.

  In addition, when using a flyer device, the winding speed of the winding is higher than when using a nozzle device. Therefore, the cost of the stator can be reduced by increasing the speed of the winding winding process and reducing the number of equipment. Can be realized.

  Each of the plurality of insulators is provided with a terminal portion, and each terminal portion of the plurality of windings is connected to the terminal portion. Therefore, the terminal portion of the winding can be easily positioned.

  Moreover, the extending part is extended from the insulation main-body part integrated with each core structure part, and the extension edge part of this extending part is connected by the connection part. Here, the extending portion is located on the radially inner side than the core constituent portion. Therefore, when the winding is wound around the teeth portion from the outside in the radial direction using the flyer device, it is possible to suppress interference between the flyer of the flyer device and the extending portion or the connecting portion.

  Moreover, in order to solve the said subject, the stator of Claim 11 is comprised of the several yoke structure part divided | segmented into the circumferential direction of the said yoke while comprising the annular yoke, and each said yoke structure A plurality of core constituent portions integrally including a plurality of teeth portions protruding in the radial direction of the yoke from a portion, a plurality of windings each including a plurality of winding portions wound around the teeth portions, and A plurality of insulators that are integrated with each core constituent part and insulate the teeth part and the winding part, and have a plurality of insulators that have connecting parts that connect the plurality of insulating parts. The insulating part in at least one of the insulators is located on the radially inner side of the core constituent part, an insulating main body part that is integrated with each core constituent part and insulates the teeth part and the winding part. When Extending from the insulating main body in the axial direction, the radial direction, and the circumferential direction of the yoke, or a combination thereof, and the connecting portion includes the plurality of insulating portions. The extension portion is connected to each other, and a guide portion that guides each end portion of the plurality of windings is formed in each of the plurality of insulators along the axial direction of the yoke. .

  This stator is manufactured in the same manner as the stator according to claim 1 described above. Therefore, it is not necessary to secure a space between the tooth portions as in the case of using the nozzle device, so that the space of the windings can be increased, and the stator can be reduced in size.

  Moreover, since the yoke is divided into a plurality of yoke components in the circumferential direction, for example, the stator is axially compared to a case where the yoke is divided into a plurality of yoke components in the axial direction. Can be reduced in size.

  In addition, when using a flyer device, the winding speed of the winding is higher than when using a nozzle device. Therefore, the cost of the stator can be reduced by increasing the speed of the winding winding process and reducing the number of equipment. Can be realized.

  Each of the plurality of insulators is formed with a guide portion along the axial direction of the yoke, and each terminal portion of the plurality of windings is guided by the guide portion. Therefore, the terminal portion of the winding can be easily positioned.

  Moreover, the extending part is extended from the insulation main-body part integrated with each core structure part, and the extension edge part of this extending part is connected by the connection part. Here, the extending portion is located on the radially inner side than the core constituent portion. Therefore, when the winding is wound around the teeth portion from the outside in the radial direction using the flyer device, it is possible to suppress interference between the flyer of the flyer device and the extending portion or the connecting portion.

  In order to solve the above-mentioned problem, a stator according to claim 12 constitutes an annular yoke and a plurality of yoke components divided in the circumferential direction of the yoke, respectively, A plurality of core constituent portions integrally including a plurality of teeth portions protruding in the radial direction of the yoke from a portion, a plurality of windings each including a plurality of winding portions wound around the teeth portions, and A plurality of insulators that are integrated with each core constituent part and insulate the teeth part and the winding part, and have a plurality of insulators that have connecting parts that connect the plurality of insulating parts. The insulating part in at least one of the insulators is located on the radially inner side of the core constituent part, an insulating main body part that is integrated with each core constituent part and insulates the teeth part and the winding part. When Extending from the insulating main body in the axial direction, the radial direction, and the circumferential direction of the yoke, or a combination thereof, and the connecting portion includes the plurality of insulating portions. The extension part is connected to each other, and a terminal part connected to each terminal part of the plurality of windings is provided in any of the plurality of yoke constituent parts.

  This stator is manufactured in the same manner as the stator according to claim 1 described above. Therefore, it is not necessary to secure a space between the tooth portions as in the case of using the nozzle device, so that the space of the windings can be increased, and the stator can be reduced in size.

  Moreover, since the yoke is divided into a plurality of yoke components in the circumferential direction, for example, the stator is axially compared to a case where the yoke is divided into a plurality of yoke components in the axial direction. Can be reduced in size.

  In addition, when using a flyer device, the winding speed of the winding is higher than when using a nozzle device. Therefore, the cost of the stator can be reduced by increasing the speed of the winding winding process and reducing the number of equipment. Can be realized.

  Moreover, the terminal part is provided in either of several yoke structure parts, and the terminal part of each of several coil | winding is connected to this terminal part. Therefore, the terminal portion of the winding can be easily positioned.

  Moreover, the extending part is extended from the insulation main-body part integrated with each core structure part, and the extension edge part of this extending part is connected by the connection part. Here, the extending portion is located on the radially inner side than the core constituent portion. Therefore, when the winding is wound around the teeth portion from the outside in the radial direction using the flyer device, it is possible to suppress interference between the flyer of the flyer device and the extending portion or the connecting portion.

  A stator according to a thirteenth aspect is the stator according to any one of the tenth to twelfth aspects, wherein the connecting portion of the plurality of insulators is any one of a radial direction and an axial direction of the yoke. It is set as the structure arrange | positioned with a gap | interval in a direction or the direction which combined them.

  According to this stator, the plurality of connecting portions are arranged with a gap therebetween in any one of the radial direction and the axial direction of the yoke, or a combination thereof. It is possible to secure a space for wiring between the bridges.

  The stator according to claim 14 is the stator according to any one of claims 10 to 13, wherein each of the windings is connected to the plurality of winding portions and wired to the coupling portion. A plurality of connecting wires, wherein the plurality of connecting portions are arranged with a gap in one of the radial direction and the axial direction of the yoke, or a combination thereof; It is set as the structure by which the accommodating part which accommodates another member was formed in the at least 1 connection part among the parts.

  According to this stator, at least one of the plurality of connecting portions arranged with a gap in one of the radial direction and the axial direction of the yoke, or a combination thereof, An accommodating portion for accommodating other members is formed. Therefore, since interference between the connecting portion and other members can be avoided, further downsizing and cost reduction of the stator can be realized.

  In addition, like the stator according to claim 15, in the stator according to any one of claims 1 to 14, it is preferable that the plurality of windings constitute a plurality of phases.

  In order to solve the problem, a brushless motor according to claim 16 is a rotor rotated by a rotating magnetic field formed by the stator according to any one of claims 1 to 15 and the stator. And.

  According to this brushless motor, since the stator according to any one of claims 1 to 15 is provided, a reduction in size and cost can be realized.

It is a perspective view of the stator which concerns on the reference example used as the premise of one Embodiment of this invention. FIG. 2 is a perspective view of a U-phase stator component shown in FIG. 1. FIG. 2 is a perspective view of a V-phase stator component shown in FIG. 1. FIG. 2 is a perspective view of a W-phase stator component shown in FIG. 1. It is a perspective view which shows the process in which the some stator structure part shown by FIG. 1 is mutually assembled | attached. It is a perspective view which shows the state which assembly | attachment advanced rather than FIG. 3A. It is a figure explaining a mode that a coil is wound with a flyer device. It is a perspective view of a stator concerning one embodiment of the present invention. FIG. 6 is a perspective view of a U-phase stator component shown in FIG. 5. It is a perspective view which shows the state which assembled | attached the control circuit part to the stator shown by FIG. FIG. 6 is a perspective view showing a first modification of the stator shown in FIG. 5. FIG. 6 is a perspective view showing a second modification of the stator shown in FIG. 5. FIG. 6 is an enlarged perspective view of a main part showing a third modification of the stator shown in FIG. 5. FIG. 10 is an enlarged perspective view of a main part showing a fourth modification of the stator shown in FIG. 5. FIG. 10 is a perspective view showing a fifth modification of the stator shown in FIG. 5. It is a figure which shows the 1st modification of the stator which concerns on a reference example. It is a figure which shows the 2nd modification of the stator which concerns on a reference example. It is a figure which shows the 3rd modification of the stator which concerns on a reference example. FIG. 16 is a perspective view of a stator group of the first group shown in FIG. 15. FIG. 16 is a perspective view of a second group of stator components shown in FIG. 15. FIG. 16 is a perspective view of a third group of stator components shown in FIG. 15. It is side surface sectional drawing of the motor pump to which the brushless motor which concerns on one Embodiment of this invention was applied. It is side surface sectional drawing of the some connection part shown by FIG. It is side surface sectional drawing which shows the 1st modification of the some connection part shown by FIG. 18A. It is side surface sectional drawing which shows the 2nd modification of the some connection part shown by FIG. 18A.

[Reference Example as a Premise of an Embodiment of the Invention]
First, a reference example as a premise of an embodiment of the present invention will be described with reference to FIGS.

  A stator 10 according to a reference example shown in FIG. 1 is used for an inner rotor type brushless motor, and includes a U-phase stator component 12U, a V-phase stator component 12V shown in FIGS. 2A to 2C, It is comprised by the W-phase stator structure part 12W.

  As shown in FIG. 2A, the U-phase stator component 12U includes a plurality of core components 14U, a winding 16U, and an insulator 18U. The plurality of core components 14U constitute a core 20 (all of which are shown in FIG. 1) by a plurality of V-phase core components 14V described later and a plurality of W-phase core components 14W. The yoke component 22U and a plurality of teeth 24U are provided.

  The plurality of yoke components 22U constitute a ring-shaped yoke 40 (all of which are shown in FIG. 1) with a plurality of V-phase yoke components 22V described later and a plurality of W-phase yoke components 22W. Each is formed in an arc shape. Each of the plurality of tooth portions 24U is integrally formed with the yoke component 22U, and protrudes from the yoke component 22U toward the radially inner side of the yoke 40 (see FIG. 1).

  Winding 16U constitutes the U phase, and has a plurality of winding parts 26U and a plurality of crossovers 28U. The plurality of winding portions 26U are intensively wound around the tooth portion 24U via insulating portions 32U described later, and are connected to each other by a plurality of crossover wires 28U. The connecting wire 28U connects the plurality of winding portions 26U, and is wired (wrapped) along the outer peripheral surface of the connecting portion 34U formed in the insulator 18U described later. Further, the terminal portions 30U on both ends of the winding 16U are led out from the teeth portion 24U to one axial side of the stator 10 (arrow Z1 side), and the connecting wire 28U is located on the same side as the terminal portion 30U. ing.

  The insulator 18U is made of resin and integrally includes a plurality of insulating portions 32U and a connecting portion 34U. The plurality of insulating portions 32U are provided in the same number as the above-described plurality of teeth portions 24U, and protrude toward the yoke component 22U side (the yoke 40 side shown in FIG. 1) with respect to the connecting portion 34U described later. Has been. The plurality of insulating portions 32U include an insulating main body portion 32U1 and an extending portion 32U2. The insulating main body 32U1 is integrated with the surfaces of the above-described plurality of core components 14U by being integrally formed, fitted and fitted to each other, and the tooth portion 24U and the winding portion 26U formed in the core component 14U. And is insulated. The extending part 32U2 is positioned radially inward from the core constituent part 14U, and extends from the insulating main body part 32U1 to one side (Z1 side) in the axial direction of the yoke 40.

  The connecting portion 34U is arranged so as to be shifted to one axial side (Z1 side) of the yoke 40 with respect to the plurality of insulating portions 32U, and is formed in a ring shape. The connecting portion 34U connects the plurality of insulating portions 32U (more specifically, the extending end portion (end portion on the Z1 side) of the extending portion 32U2 in the plurality of insulating portions 32U), and the core component portion It is located in the radial direction inner side of the yoke 40 from 14U (the radial inner side of the yoke 40 shown in FIG. 1). Between the plurality of insulating portions 32U on the outer peripheral surface of the connecting portion 34U, a plurality of protruding holding portions 36U protrude outward in the radial direction. The holding portion 36U holds the above-described connecting wire 28U from the other axial side (arrow Z2 side) of the connecting portion 34U. In addition, a plurality of notches 38U that open to the other axial side (arrow Z2 side) are formed between the plurality of insulating portions 32U in the connecting portion 34U.

  The V-phase stator component 12V shown in FIG. 2B has the same basic configuration as the U-phase stator component 12U. In other words, the V-phase stator component 12V includes a plurality of yoke components 22V, a plurality of teeth 24V, a winding 16V, and an insulator 18V. The plurality of yoke components 22V, the plurality of teeth 24V, the winding 16V, and the insulator 18V are the above-described plurality of yoke components 22U, the plurality of teeth 24U, the winding 16U, and the insulator 18U. (Both refer to FIG. 2A). In the V-phase stator constituting portion 12V, the connecting portion 34V is formed in a ring shape and has a smaller diameter than the above-described U-phase connecting portion 34U (see FIG. 2A). The holding portion 36V holds the connecting wire 28V from one axial side (arrow Z1 side) of the connecting portion 34V, and is positioned radially inward from the core constituting portion 14V.

  Further, the plurality of insulating portions 32V include an insulating main body portion 32V1 and an extending portion 32V2. The insulating main body 32V1 is integrated with the surfaces of the plurality of core components 14V described above by being integrally formed, fitted and fitted to each other, and the tooth portion 24V and the winding portion 26V formed in the core component 14V. And is insulated. The extension part 32V2 is positioned radially inward of the core component part 14V and extends in the circumferential direction of the yoke 40 from the insulating main body part 32V1. The connecting portion 34V is provided on one axial side (Z1 side) of the plurality of insulating portions 32V. The connecting portion 34V is formed in a ring shape to connect the plurality of insulating portions 32V, and is located radially inward from the core constituting portion 14V.

  The basic configuration of the W-phase stator component 12W shown in FIG. 2C is the same as that of the U-phase stator component 12U. That is, the W-phase stator component 12W includes a plurality of yoke components 22W, a plurality of teeth 24W, a winding 16W, and an insulator 18W. The plurality of yoke components 22W, the plurality of teeth 24W, the windings 16W, and the insulator 18W include the above-described plurality of yoke components 22U, the plurality of teeth 24U, the windings 16U, and the insulator 18U. (Both refer to FIG. 2A). In the W-phase stator constituting portion 12W, the connecting portion 34W is formed in a ring shape and has a smaller diameter than the above-described V-phase connecting portion 34V (see FIG. 2B). Further, the above-described notch (see the notch 38U in FIG. 2A) is omitted from the connecting portion 34W. Further, the holding portion 36W holds the crossover wire 28W from the one axial side (arrow Z1 side) of the connecting portion 34W, and is positioned radially inward from the core constituting portion 14W.

  The plurality of insulating portions 32W include an insulating main body portion 32W1 and an extending portion 32W2. The insulating main body portion 32W1 is integrated with the surface of the plurality of core component portions 14W by integral molding, fitting and the like, respectively, and the tooth portion 24W and the winding portion 26W formed in the core component portion 14W. And is insulated. The extension part 32W2 is positioned radially inward of the core component part 14W and extends radially inward of the yoke 40 from the insulating main body part 32W1. The connecting portion 34W is provided on one axial side (Z1 side) of the plurality of insulating portions 32W. The connecting portion 34W is formed in a ring shape and includes a plurality of insulating portions 32W (more specifically, extending end portions (end portions on the radially inner side) of the extending portions 32W2 in the plurality of insulating portions 32W). They are connected and are located radially inward of the core component 14W.

  As shown in FIG. 1, the plurality of stator constituent portions 12U, 12V, and 12W are assembled to each other to constitute the stator 10, as will be described in detail later. Further, in the stator 10, an annular yoke 40 is formed by a plurality of yoke components 22U, 22V, 22W. That is, in other words, the yoke 40 is divided into a plurality of yoke components 22U, 22V, 22W in the circumferential direction. The plurality of yoke components 22U, 22V, and 22W are fitted between a pair of yoke components adjacent to each other on both sides.

  Further, the plurality of connecting portions 34U, 34V, 34W are arranged inside the yoke 40 in the radial direction. The plurality of connecting portions 34U, 34V, 34W are arranged with a gap in the radial direction and the axial direction of the yoke 40, and are provided coaxially with the yoke 40. The V-phase holding portion 36V is fitted to the inner peripheral surface of the U-phase connecting portion 34U, and the W-phase holding portion 36W is fitted to the inner peripheral surface of the V-phase connecting portion 34V. Yes. Thus, the plurality of connecting portions 34U, 34V, 34W are held in a state of being separated from each other in the radial direction. That is, the holding portions 36U, 36V, and 36W are provided between the plurality of connecting portions 34U, 34V, and 34W in the radial direction and hold the plurality of connecting portions 34U, 34V, and 34W in a state of being radially separated from each other. It also serves as a spacer.

  Further, as described above, in the state where the plurality of connecting portions 34U, 34V, 34W are arranged with gaps in the radial direction of the yoke 40, the V-phase connecting wire 28V is connected to the U-phase connecting portion 34U. It passes through the inside of the formed notch 38U (accommodated in the notch 38U), and the W-phase connecting wire 28W is connected to the notch 38U formed in the U-phase connecting portion 34U and the V-phase It passes through the inside of the notch 38V formed in the connecting portion 34V (accommodated in the notch 38U and the notch 38V (see also FIG. 3B)). The notches 38U and 38V are an example of the accommodating portion in the present invention.

  Next, a method for manufacturing the stator 10 having the above configuration will be described.

  First, as shown in FIG. 2A, the core component 14U is integrated with the insulating portion 32U of the insulator 18U to form a U-phase subassembly 42U including the insulator 18U and a plurality of core components 14U. Similarly, as shown in FIG. 2B, the core constituent part 14V is integrated with the insulating part 32V of the insulator 18V to form a V-phase subassembly 42V composed of the insulator 18V and the plurality of core constituent parts 14V. 2C, the core component 14W is integrated with the insulating portion 32W of the insulator 18W to form a W-phase subassembly 42W including the insulator 18U and the plurality of core components 14V. In this way, the subassemblies 42U, 42V, and 42W are formed for each of the U phase, the V phase, and the W phase (subassembly forming step).

  Subsequently, as shown in FIG. 2A, the winding 16U is wound around each tooth portion 24U of the U-phase subassembly 42U from the outside in the radial direction by using the flyer device 100 (see FIG. 4), and the subassembly 42U is wound. A U-phase stator constituting portion 12U having a plurality of winding portions 26U is formed. As shown in FIG. 4, the flyer device 100 includes a flyer 101 that circularly moves around the teeth portion 24 to wind the winding 16, and a winding wound around the teeth portion 24. 16 includes a variable former 102 that aligns 16 and a drive circuit 103 that controls them.

  Similarly, as shown in FIG. 2B, a winding 16V is wound around each tooth portion 24V of the V-phase subassembly 42V from the outside in the radial direction using the above-described flyer device 100, and a plurality of windings are wound around the subassembly 42V. A V-phase stator constituting portion 12V in which the turning portion 26V is formed is formed. Further, as shown in FIG. 2C, a winding 16W is wound around each tooth portion 24W of the W-phase subassembly 42W from the outside in the radial direction using the above-described flyer device 100, and a plurality of windings are wound around the subassembly 42W. The W-phase stator component 12W is formed with the portion 26W.

  At this time, as shown in FIG. 2A, the plurality of connecting wires 28U are wired along the outer peripheral surface of the connecting portion 34U. Further, the plurality of connecting wires 28U are held from the other axial side (arrow Z2 side) of the connecting portion 34U by the protruding holding portion 36U. Similarly, as shown in FIG. 2B, the plurality of connecting wires 28V are wired along the outer peripheral surface of the connecting portion 34V. Further, the plurality of connecting wires 28V are held from one side (arrow Z1 side) in the axial direction of the connecting portion 34V by the protruding holding portion 36V. Further, as shown in FIG. 2C, the plurality of crossover wires 28W are wired along the outer peripheral surface of the connecting portion 34W. Further, the plurality of connecting wires 28W are held from one axial side (arrow Z1 side) of the connecting portion 34W by the protruding holding portion 36W.

  Further, as shown in FIG. 2A, the terminal portions 30U on both ends of the winding 16U are led out from the teeth portion 24U to one axial side of the stator 10 (arrow Z1 side). Similarly, as shown in FIG. 2B, the terminal portions 30V on both ends of the winding 16V are led out from the teeth portion 24V to one side in the axial direction of the stator 10. Further, as shown in FIG. 2C, the end portions 30 </ b> W on both ends of the winding 16 </ b> W are led out from the teeth portion 24 </ b> W to one side in the axial direction of the stator 10. In this way, the stator components 12U, 12V, and 12W are formed for each of the U phase, V phase, and W phase (stator component forming step).

  Next, as shown in FIGS. 3A and 3B, the V-phase stator component 12V is shifted in the circumferential direction by a predetermined angle with respect to the W-phase stator component 12W. Is assembled to the W-phase stator constituting portion 12W from one axial side (arrow Z1 side). In addition, with the U-phase stator component 12U shifted from the V-phase stator component 12V by a predetermined angle in the circumferential direction, the U-phase stator component 12U is moved from one axial side (arrow Z1 side) to the V-phase stator component 12U. It is assembled to the stator component 12V of the phase and the stator component 12W of the W phase.

  At this time, the plurality of yoke components 22U, 22V, and 22W are fitted between a pair of yoke components adjacent to each other on both sides. The V-phase holding portion 36V is fitted to the inner peripheral surface of the U-phase connecting portion 34U, and the W-phase holding portion 36W is fitted to the inner peripheral surface of the V-phase connecting portion 34V. In this way, the plurality of connecting portions 34U, 34V, 34W are held in a state of being radially separated from each other by the protruding holding portions 36U, 36V, 36W.

  Further, at this time, the V-phase connecting wire 28V is passed inside the notch 38U formed in the U-phase connecting portion 34U, and the W-phase connecting wire 28W is formed in the U-phase connecting portion 34U. It passes through the notch 38U and the notch 38V formed in the V-phase connecting portion 34V. In this manner, the stator 10 is formed by assembling a plurality of stator constituent portions 12U, 12V, and 12W (stator forming step). The terminal units 30U, 30V, and 30W are connected by a bus bar (not shown). The stator 10 is manufactured by the above procedure.

  Next, the operation and effect of the reference example will be described.

  In addition, in the following description, when not distinguishing U phase, V phase, and W phase about each member and each part, description of U, V, and W is abbreviate | omitted from the end of a code | symbol for convenience.

  According to the stator 10 according to the reference example, the yoke 40 is configured by the plurality of yoke components 22 divided in the circumferential direction. For this reason, even if it is a stator used for what is called an inner rotor type brushless motor by which a plurality of teeth parts 24 projected toward the diameter direction inner side of yoke 40, as mentioned above, U phase, V phase, W A subassembly 42 is formed for each phase, and the winding 16 can be wound around each tooth portion 24 of each subassembly 42 from outside in the radial direction using the flyer device 100 (see FIG. 4). Accordingly, since it is not necessary to secure a space between the tooth portions 24 as in the case of using a nozzle device, the space of the winding 16 can be increased and the stator 10 can be reduced in size.

  Moreover, as described above, the yoke 40 is divided into the plurality of yoke components 22 in the circumferential direction. For example, when the yoke 40 is divided into the plurality of yoke components in the axial direction. In comparison, the stator 10 can be reduced in size in the axial direction.

  Further, when the flyer device 100 is used, the winding speed of the winding 16 is higher than when the nozzle device is used. Therefore, the speed of the winding process of the winding 16 is increased, and as a result, the number of facilities is reduced. A cost reduction of 10 can be realized.

  The U-phase connecting portion 34U and the V-phase connecting portion 34V are provided with notches 38U and 38V through which the crossover wires 28V and 28W pass. Accordingly, interference between the connecting portions 34U and 34V and the crossover wires 28V and 28W can be avoided, so that the length of the crossover wires 28V and 28W can be suppressed. Thereby, further downsizing and cost reduction of the stator 10 can be realized.

  In the U-phase stator constituting portion 12U, the extending portion 32U2 is located on the radially inner side of the core constituting portion 14U. Accordingly, when the winding 16U is wound around the teeth portion 24U from the outside in the radial direction by using the flyer device, it is possible to suppress interference between the flyer of the flyer device and the extending portion 32U2 or the connecting portion 34U.

  In addition, in the V-phase stator component 12V and the W-phase stator component 12W, the connecting portions 34V and 34W are positioned radially inward from the core components 14V and 14W, respectively. Therefore, when the winding is wound around the teeth portions 24V and 24W from the outside in the radial direction using the flyer device, it is possible to suppress the interference between the flyer of the flyer device and the connecting portions 34V and 34W.

  In addition, each connecting portion 34 has a holding portion 36 that holds the crossover wire 28 wired to itself. Therefore, for example, as described above, when the stator 10 is formed by assembling the plurality of stator constituent portions 12 with each other, the connecting wire 28 can be held by the connecting portion 34 by the holding portion 36, so The workability at the time of assembling the component parts 12 can be improved. Further, even after the stator 10 is incorporated in the brushless motor, the jumper wire 28 is held by the connecting portion 34 by the holding portion 36, so that the jumper of the jumper wire 28 can be suppressed, and abnormal noise and failure can be prevented. Can be suppressed.

  Further, the plurality of connecting portions 34 can be held in a state of being separated from each other in the radial direction by the protruding holding portions 36. As a result, a space for wiring the jumper wires 28 between the radial directions of the plurality of connecting portions 34 can be secured, and rattling of the plurality of connecting portions 34 can also be suppressed. Moreover, the workability | operativity at the time of assembling the some connection part 34 mutually can also be made favorable compared with the case where the some connection part 34 is mutually fitted over a perimeter.

  Moreover, since the several yoke structure part 22 is integrally formed in the teeth part 24, for example, the some tooth part to which the front-end | tip part was mutually connected by the thin-walled bridge part, and the base end of this teeth part Compared with a two-part type core having a yoke connecting the parts as an independent member, magnetic loss at each connecting part can be suppressed. That is, in the two-divided type core, magnetic loss occurs at three locations: the bridging portion between the tip ends of a pair of adjacent teeth portions, the base end portion of the pair of teeth portions, and the connecting portion of the yoke. On the other hand, in the stator 10 of the present embodiment, the magnetic loss only occurs at one place of the connecting portion between the pair of adjacent yoke components 22, so that the magnetic loss can be reduced. This makes it possible to further reduce the size and weight.

  Moreover, since the several winding part 26 is connected by the crossover 28, the bus bar for connecting the several winding part 26 is unnecessary. Therefore, the number of parts can be reduced, and this can also reduce the cost.

  Moreover, since the connecting wire 28 can be wound around each connection part 34, the winding speed of the coil | winding 16 can be raised, and the shaping process of the connecting wire 28 after winding the coil | winding 16 can also be abolished. Can do. Therefore, the cost can be reduced also by this.

  In addition, according to the brushless motor according to the reference example, since the above-described stator 10 is provided, it is possible to realize downsizing and cost reduction.

  Further, according to the stator manufacturing method according to the reference example, the sub-assemblies 42 are formed for each of the U-phase, the V-phase, and the W-phase, and the windings 16 are attached to the teeth portions 24 of the sub-assemblies 42 from the radially outer side. Since it winds using the fryer apparatus 100, it is not necessary to ensure a space between the teeth parts 24 like the case where a nozzle apparatus is used. Accordingly, the space of the winding 16 can be increased, and the stator 10 can be reduced in size.

  Further, since the flyer device 100 is used, the winding speed of the winding 16 is higher than that in the case of using the nozzle device. Therefore, the speed of the winding process of the winding 16 is increased, and as a result, the number of facilities is reduced. Cost reduction can be realized.

  Moreover, since the connection part 34 is provided coaxially with the yoke 40, a structure can be simplified. Moreover, since the holding | maintenance part 36 is formed in protrusion shape, a structure can be simplified also by this.

  Next, a modification of this reference example will be described.

  In this reference example, the brushless motor is, for example, 8 poles and 12 slots, but the number of magnetic poles and the number of slots may be other combinations.

  Moreover, the connection method of the plurality of windings 16U, 16V, and 16W may be a star connection or a delta connection both in series and in parallel.

  In addition, the holding portion 36 has a function as a holding portion that holds the crossover 28 and a function as a protruding spacer that holds the plurality of connecting portions 34 in a state of being separated from each other in the radial direction. The holding part 36 and the spacer may be provided independently of each other.

  Further, the holding portions 36 are formed in all the connecting portions 34, but instead of the holding portions 36U and 36W being omitted from the U-phase connecting portion 34U and the W-phase connecting portion 34W, the V-phase connecting portion 34V. In addition to the holding portion 36, spacers that are fitted to the inner peripheral surface of the U-phase connecting portion 34 </ b> U and the outer peripheral surface of the W-phase connecting portion 34 </ b> W may be formed on the outer peripheral surface and the inner peripheral surface.

  Moreover, although the connection part 34 was provided only in the axial direction one side (Z1 side) of the some insulation part 32U, only the axial direction other side (Z2 side) of the some insulation part 32U, or several It may be provided on both sides in the axial direction of the insulating portion 32U.

  Moreover, although the connection part 34 was provided coaxially with the yoke 40, it does not need to be provided coaxially with the yoke 40. Moreover, although the connection part 34 was formed in ring shape, for example, it may be formed in polygonal shape, and may be made into other shapes, such as C shape with a part notch. good.

  Moreover, although the notches 38U and 38V accommodated the connecting wires 28V and 28W as an example of other members in the present invention, other members may be accommodated.

  Moreover, although the holding | maintenance part 36 was formed in protrusion shape, it may extend in circular arc shape along the circumferential direction of the stator 10, for example, and may be made into another shape.

  Further, the extension portion 32U2 is formed only in the U-phase insulator 18U, but an extension portion similar to the extension portion 32U2 may be formed in the V-phase insulator 18V or the W-phase insulator 18W. .

  Further, although the connecting portion 34U is positioned radially inward from the core constituent portion 14U, the insulator 18 is positioned radially inward from the core constituent portion 14U as schematically shown in FIG. As long as the extending portion 32U2 is provided, the connecting portion 34U may be located on the radially outer side than the core constituting portion 14U. Moreover, if the extension part 32U2 is located in radial direction inner side rather than the core structure part 14U, it will be extended in the direction of the axial direction of the yoke 40, radial direction, an axial direction, or those combinations. May be. Moreover, although the connection part 34U was provided in the axial direction one side (Z1 side) of the insulation part 32U, and connected the extension end part of the extension part 32U2 extended in the axial direction of the yoke 40, for example, As shown in FIG. 14, the extending portion 32U2 extends in the circumferential direction of the yoke 40, and the connecting portion 34U extends in the circumferential direction of the yoke 40, and the extending end portion of the extending portion 32U2 May be connected. Further, when the extending portion 32U2 extends in any of the axial direction, the radial direction, and the axial direction of the yoke 40, or a combination thereof, the connecting portion 34U extends from the extending portion 32U2. You may connect an extension part and other parts other than this extension end part. The same applies to the case where an extending portion or a connecting portion is formed in the V-phase insulator 18V or the W-phase insulator 18W.

  Moreover, although the some connection part 34U, 34V, 34W was arrange | positioned with the space | gap in the radial direction and axial direction of the yoke 40 as FIG. 18A shows, as FIG. 18B shows, The yoke 40 may be arranged with a gap in the axial direction, or may be arranged with a gap in the radial direction of the yoke 40 as shown in FIG. 18C. Even in such a configuration, it is possible to secure a space for wiring the connecting wire 28 between the plurality of connecting portions 34U, 34V, 34W.

  In addition, the stator 10 is used for a so-called inner rotor type brushless motor in which a plurality of teeth portions 24 protrude toward the radially inner side of the yoke 40, but a plurality of stators 10 are disposed toward the radially outer side of the yoke 40. The teeth portion 24 may be used for a so-called outer rotor type brushless motor.

  Moreover, although the stator 10 was divided | segmented into the stator structure part 12U, 12V, and 12W comprised for every some phase as an example of a some group, as FIG. 15, FIG. 16A-FIG. It may be divided into stator constituent parts 12A, 12B, 12C configured for each group in which the phases are mixed.

  As an example, in the example shown in FIGS. 5 and 16A to 16C, the stator constituting portion 12A constituting the first group includes a + U-phase tooth portion 24U and a −W-phase tooth portion 24W. The stator constituting portion 12B constituting the second group includes a + V-phase tooth portion 24V and a -U-phase tooth portion 24U. The stator constituting portion 12C constituting the third group includes a + W-phase tooth portion 24W and a -V-phase tooth portion 24V. The brushless motor in this example is a 10-pole 12-slot or 14-pole 12-slot motor. In addition, a winding is wound around the teeth portion of the −U phase, the −V phase, and the −W phase by reverse winding.

  Although not particularly illustrated, as another combination, for example, the stator constituting portion 12A constituting the first group includes a U-phase tooth portion and a -V-phase tooth portion, and constitutes the second group. The stator component 12B includes a + V-phase tooth portion and a -U-phase tooth portion, and the stator component portion 12C constituting the third group includes a + W-phase tooth portion and a -W-phase tooth portion. You may have.

  The stator constituting portion 12A constituting the first group has a U-phase tooth portion and a -U-phase tooth portion, and the stator constituting portion 12B constituting the second group is a + V-phase tooth portion. The stator constituting portion 12C, which has a −V phase tooth portion and constitutes the third group, may have a + W phase tooth portion and a −W phase tooth portion.

  Furthermore, the stator constituting portion 12A constituting the first group has a U-phase tooth portion and a -U-phase tooth portion, and the stator constituting portion 12B constituting the second group is constituted by a + V-phase tooth portion. The stator constituent portion 12C having the -W phase tooth portion and constituting the third group may have a + W phase tooth portion and a -V phase tooth portion.

  In addition to the above, the stator constituent parts constituting each group may have a plurality of phase tooth parts composed of other combinations.

[One Embodiment of the Present Invention]
Next, an embodiment of the present invention will be described with reference to FIGS.

  The stator 110 according to an embodiment of the present invention shown in FIGS. 5 to 7 has a configuration changed as follows with respect to the stator 10 according to the reference example described above. In the embodiment of the present invention, the same reference numerals are used for the same configurations as those in the above-described reference example, and the description thereof is omitted.

  As shown in FIG. 5, each of the plurality of insulators 18U, 18V, 18W is provided with long plate-like terminal portions 112U, 112V, 112W having conductivity. Terminal portions 30U, 30V, and 30W of the plurality of windings 16U, 16V, and 16W are connected to the terminal portions 112U, 112V, and 112W, respectively. The terminal portions 112U, 112V, and 112W are provided on one axial side (arrow Z1 side) of the yoke 40, that is, on the same side as the connecting portion 34. These terminal portions 112U, 112V, 112W are formed with tongue-like connection portions 113U, 113V, 113W connected to the terminal portions 30U, 30V, 30W, respectively.

  Further, as shown in FIG. 6, in the U-phase insulator 18 </ b> U, the end of each insulating portion 32 </ b> U opposite to the yoke 40 (the yoke component 22 </ b> U) is connected to the connecting portion 34 </ b> U with the yoke 40. A projecting portion 114U is formed to project to the side. The protrusion 114U is formed in a plate shape extending along the axial direction of the yoke 40, and is thicker than the connecting portion 34U. An end face 114U1 facing the one axial side (arrow Z1 side) of the yoke 40 is formed on the protruding portion 114U. Further, an insertion groove 116U that opens in the axial direction of the yoke 40 is formed in the end surface 114U1 of any of the insulating portions 32U. And the above-mentioned terminal part 112U is provided in the protrusion part 114U by being inserted (press-fit) into this insertion groove 116U. Moreover, this terminal part 112U protrudes in the axial direction of the yoke 40 rather than the connection part 34U.

  Further, as shown in FIG. 5, the terminal portions 112V and 112W are also inserted into the insertion grooves 116V and 116W formed on the end surfaces of the protruding portions 114V and 114W of the insulating portions 32V and 32W, similarly to the terminal portion 112U. Are provided in the projecting portions 114V and 114W. These terminal portions 112U, 112V, and 112W are in contact with the outer peripheral surface 34U1 (surface on the yoke 40 side) of the connecting portion 34U.

  As shown in FIG. 6, a groove-shaped guide portion 118 </ b> U is formed in the insulator 18 </ b> U along the axial direction of the yoke 40 (see FIG. 5). More specifically, the guide portion 118U is formed on the side surface 114U2 (side surface facing the circumferential direction of the yoke 40) of the protruding portion 114U. And the terminal part 30U of the coil | winding 16U is guided by this guide part 118U. In this case, the terminal portion 30U is fitted into the groove-shaped guide portion 118U by, for example, snap fitting.

  Further, as shown in FIG. 5, guide portions 118V and 116W similar to the above-described guide portion 118U are also formed on the side surfaces of the protruding portions 114V and 114W, and the end portions 30V and 30W of the windings 16V and 16W are formed. Are guided by the guide portions 118V and 116W.

  Next, the difference between the operation and effect of the embodiment of the present invention and the case of the above-described reference example will be described.

  In addition, in the following description, when not distinguishing U phase, V phase, and W phase about each member and each part, description of U, V, and W is abbreviate | omitted from the end of a code | symbol for convenience.

  According to the stator 110 according to the embodiment of the present invention, each of the plurality of insulators 18 is provided with the terminal portion 112, and each terminal portion 30 of the plurality of windings 16 is provided on the terminal portion 112. Is connected. Accordingly, the terminal portion 30 can be easily positioned.

  Further, since the terminal portion 112 protrudes in the axial direction of the yoke 40 from the connecting portion 34, the terminal portion 112 and the control circuit portion can be easily connected as shown in FIG.

  Moreover, since the terminal part 112 is provided in the protrusion part 114 protruded by the side of the yoke 40 with respect to the connection part 34, interference with the terminal part 112 and the connection part 34 is suppressed, and the terminal part 30 is provided. Can be easily positioned.

  In addition, the terminal portion 112 can be easily fixed to the protruding portion 114 by inserting the terminal portion 112 into the insertion groove 116 formed in the protruding portion 114.

  Moreover, since the terminal part 112 is contact | abutted by the outer peripheral surface 34U1 of the connection part 34U, the shakiness of the terminal part 112 can be suppressed.

  Each of the plurality of insulators 18 is formed with a guide portion 118 along the axial direction of the yoke 40, and each terminal portion 30 of the plurality of windings 16 is guided by the guide portion 118. Yes. Therefore, the terminal part 30 can be easily positioned by this.

  Moreover, since the guide part 118 is provided in the protrusion part 114 protruded by the side of the yoke 40 with respect to the connection part 34, interference with the terminal part 30 and the connection part 34 is suppressed, and the terminal part 30 is provided. Can be easily positioned.

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

  In the above-described embodiment, the protrusions 114 are formed in the respective insulating portions 32, but may be formed only in the insulating portions 32 in which the terminal portions 112 are arranged among the plurality of insulating portions 32.

  In addition, the guide portions 118U, 116V, and 116W are formed in a groove shape, but may have a shape other than the groove shape.

  Moreover, the terminal part 112 may connect each terminal part 30 as a neutral point.

  Further, as shown in FIG. 8, the above-described terminal portions 112U, 112V, and 112W may be provided on the opposite side of the connecting wire 28 (connecting portion 34) in the axial direction of the yoke 40. If comprised in this way, the terminal part 112 and the control circuit part can be easily connected in the opposite side to the connecting wire 28. FIG.

  Further, as shown in FIG. 9, the above-described terminal portion 112 (see FIGS. 5 to 7) may be omitted. In this case, the terminal unit 30 may be directly connected to the control circuit unit without passing through the terminal unit 112 described above.

  Moreover, although the guide part 118 was formed in the side surface 114U2 of the both sides of the protrusion part 114, respectively, you may form in only one side 114U2 among the protrusion parts 114. FIG.

  As shown in FIGS. 10 and 11, an insertion groove 126 that opens in the axial direction of the yoke 40 is formed in any one of the plurality of yoke components 22 in the axial direction of the yoke 40. The portion 112 may be provided in the yoke component 22 by being inserted into the insertion groove 126. Even if comprised in this way, the terminal part 30 can be positioned easily. Moreover, the terminal part 112 can be easily fixed to the yoke component 22 by inserting the terminal part 112 into the insertion groove 126 formed in the yoke component 22.

  Moreover, as shown in FIG. 10, the connection part 113 may be formed in a groove shape, or may be formed in a tongue piece shape as shown in FIG. In the case of FIG. 10, the terminal portion 30 is stripped simultaneously with the insertion of the terminal portion 112 into the insertion groove 126, and the terminal portion 30 and the terminal portion 112 are electrically connected. On the other hand, in the case of FIG. 11, the terminal part 30 is hooked on the connection part 113 by an operator's hand, and, thereby, the terminal part 30 and the terminal part 112 are conducted.

  As shown in FIG. 12, the plurality of insulating portions 32 may be connected by an arc-shaped reinforcing portion 128 on the opposite side (arrow Z2 side) to the connecting portion 34 in the axial direction of the yoke 40. If comprised in this way, the rigidity of the insulator 18 can be improved.

  Further, in order to improve the rigidity of the insulator 18, a reinforcing member 130 such as a metal ring or a wire may be embedded in the connecting portion 34 by insert molding. The insulator 18 may be configured such that the connecting portion 34 is formed of a high-strength resin by two-color molding, and the portions other than the connecting portion 34 are formed of a normal-strength resin.

[Application example of one embodiment of the present invention]
Next, an application example of one embodiment of the present invention will be described with reference to FIG.

  A fluid pump 210 shown in FIG. 13 is one to which the above-described stator 110 is applied. The fluid pump 210 includes a pump housing 212, a motor housing 214, an end housing 216, an impeller 218, a rotor 220, and a motor shaft 222 in addition to the stator 110 and the control circuit unit 120 described above. The stator 110 and the rotor 220 constitute a brushless motor.

  In the fluid pump 210, when current is supplied from the control circuit unit 120 to the stator 110, a rotating magnetic field is formed by the stator 110, and thereby the impeller 218 rotates together with the rotor 220. Further, when the impeller 218 rotates, fluid is sucked from the suction port 230 and transferred to the pump chamber 228, and the fluid transferred to the pump chamber 228 is discharged from the discharge port 232.

  According to this fluid pump 210 (brushless motor), since the stator 110 is provided, it is possible to realize downsizing and cost reduction.

  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.

10 ... Stator, 12, 12U, 12V, 12W ... Stator component, 14, 14U, 14V, 14W ... Core component, 16, 16U, 16V, 16U ... Winding, 18, 18U , 18V, 18W ... insulator, 20 ... core, 22, 22U, 22V, 22W ... yoke component, 24, 24U, 24V, 24W ... teeth, 26, 26U, 26V, 26W ... Winding part, 28, 28U, 28V, 28W ... Crossover, 30U, 30V, 30W ... Terminal part, 32U, 32V, 32W ... Insulating part, 32U1, 32V1, 32W1 ... Insulation body part, 32U2, 32V2, 32W2 ... Extension part, 34, 34U, 34V, 34W ... Connection part, 36, 36U, 36V, 36W ... Holding part (spacer), 38U, 38 ... notches (accommodating sections), 40 ... yokes, 42, 42U, 42V, 42W ... subassemblies, 50 ... rotors, 60 ... brushless motors, 100 ... flyer devices, 110: Stator, 112, 112U, 112V, 112W ... Terminal part, 113, 113U, 113V, 113W ... Connection part, 114, 114U, 114V, 114W ... Projection part, 114U1 ... End face , 114U2: side surface, 116, 116U, 116V, 114W ... insertion groove, 118, 118U, 118V, 116W ... guide part, 120 ... control circuit part, 126 ... insertion groove, 128 ... reinforcing part, 210 ... fluid pump, 212 ... pump housing, 214 ... motor housing, 216 ... end housing, 21 ... impeller 220 ... rotor, 222 ... motor shaft

Claims (16)

A plurality of yoke components that constitute an annular yoke and are divided in the circumferential direction of the yoke, and a plurality of teeth portions that protrude from the yoke component in the radial direction of the yoke, respectively. A plurality of core components having
A plurality of windings each having a plurality of winding portions wound around the teeth portion;
A plurality of insulators that are integrated with each of the core constituent parts and insulate the teeth part and the winding part, and that have a connecting part that connects the plurality of insulating parts;
A terminal portion provided in each of the plurality of insulators and connected to a terminal portion of each of the plurality of windings;
With a stator. The connecting portion is located on the radially inner side of the yoke,
A protruding portion that protrudes toward the yoke with respect to the connecting portion is formed at an end portion on the opposite side of the yoke in at least one of the plurality of insulating portions,
The terminal portion is provided on the protrusion.
The stator according to claim 1. The protrusion is formed with an insertion groove that opens in the axial direction of the yoke,
The terminal portion is inserted into the insertion groove,
The stator according to claim 2. The connecting portion is arranged to be shifted in the axial direction of the yoke with respect to the plurality of insulating portions,
The terminal portion is in contact with a surface of the connecting portion on the side of the yoke,
The stator according to claim 2 or claim 3. Each of the plurality of windings has a connecting wire that connects the plurality of winding portions and is wired with being shifted in the axial direction of the yoke with respect to the insulating portion,
The terminal portion is provided on the opposite side of the connecting wire in the axial direction of the yoke.
The stator according to any one of claims 1 to 4. A plurality of yoke components that constitute an annular yoke and are divided in the circumferential direction of the yoke, and a plurality of teeth portions that protrude from the yoke component in the radial direction of the yoke, respectively. A plurality of core components having
A plurality of windings each having a plurality of winding portions wound around the teeth portion;
A plurality of insulators that are integrated with each of the core constituent parts and insulate the teeth part and the winding part, and that have a connecting part that connects the plurality of insulating parts;
Each of the plurality of insulators is formed along the axial direction of the yoke, and a guide portion that guides each terminal portion of the plurality of windings,
With a stator. The connecting portion is located on the radially inner side of the yoke,
At the end of at least one of the plurality of insulating portions on the side opposite to the yoke, the end of the yoke is protruded toward the yoke with respect to the connecting portion. A protrusion having a facing side surface is formed;
The guide portion is provided on the side surface.
The stator according to claim 6. A plurality of yoke components that constitute an annular yoke and are divided in the circumferential direction of the yoke, and a plurality of teeth portions that protrude from the yoke component in the radial direction of the yoke, respectively. A plurality of core components having
A plurality of windings each having a plurality of winding portions wound around the teeth portion;
A plurality of insulators that are integrated with each of the core constituent parts and insulate the teeth part and the winding part, and that have a connecting part that connects the plurality of insulating parts;
A terminal portion provided in one of the plurality of yoke components, and connected to a terminal portion of each of the plurality of windings;
With a stator. Any one of the plurality of yoke components is formed with an insertion groove that opens in the axial direction of the yoke,
The terminal portion is inserted into the insertion groove,
The stator according to claim 8. A plurality of yoke components that constitute an annular yoke and are divided in the circumferential direction of the yoke, and a plurality of teeth portions that protrude from the yoke component in the radial direction of the yoke, respectively. A plurality of core components having
A plurality of windings each having a plurality of winding portions wound around the teeth portion;
A plurality of insulators that are integrated with each of the core constituent parts and insulate the teeth part and the winding part, and that have a connecting part that connects the plurality of insulating parts;
With
The insulating portion in at least one of the plurality of insulators is an insulating main body integrated with each core constituent portion to insulate the teeth portion and the winding portion, and radially inward of the core constituent portion. And extending from the insulating main body in the axial direction of the yoke, in the radial direction, and extending in the direction of any one of the circumferential direction or a combination thereof,
The connecting portion connects the extending portions in the plurality of insulating portions,
Each of the plurality of insulators is provided with a terminal portion connected to each terminal portion of the plurality of windings,
Stator. A plurality of yoke components that constitute an annular yoke and are divided in the circumferential direction of the yoke, and a plurality of teeth portions that protrude from the yoke component in the radial direction of the yoke, respectively. A plurality of core components having
A plurality of windings each having a plurality of winding portions wound around the teeth portion;
A plurality of insulators that are integrated with each of the core constituent parts and insulate the teeth part and the winding part, and that have a connecting part that connects the plurality of insulating parts;
With
The insulating portion in at least one of the plurality of insulators is an insulating main body integrated with each core constituent portion to insulate the teeth portion and the winding portion, and radially inward of the core constituent portion. And extending from the insulating main body in the axial direction of the yoke, in the radial direction, and extending in the direction of any one of the circumferential direction or a combination thereof,
The connecting portion connects the extending portions in the plurality of insulating portions,
In each of the plurality of insulators, a guide portion that guides each terminal portion of the plurality of windings is formed along the axial direction of the yoke.
Stator. A plurality of yoke components that constitute an annular yoke and are divided in the circumferential direction of the yoke, and a plurality of teeth portions that protrude from the yoke component in the radial direction of the yoke, respectively. A plurality of core components having
A plurality of windings each having a plurality of winding portions wound around the teeth portion;
A plurality of insulators that are integrated with each of the core constituent parts and insulate the teeth part and the winding part, and that have a connecting part that connects the plurality of insulating parts;
With
The insulating portion in at least one of the plurality of insulators is an insulating main body integrated with each core constituent portion to insulate the teeth portion and the winding portion, and radially inward of the core constituent portion. And extending from the insulating main body in the axial direction of the yoke, in the radial direction, and extending in the direction of any one of the circumferential direction or a combination thereof,
The connecting portion connects the extending portions in the plurality of insulating portions,
Any one of the plurality of yoke components is provided with a terminal portion connected to each terminal portion of the plurality of windings.
Stator. The connecting portions in the plurality of insulators are arranged with a gap therebetween in any one of the radial direction and the axial direction of the yoke, or a combination thereof,
The stator according to any one of claims 10 to 12. Each of the windings has a plurality of connecting wires wired to the connecting portion, and connecting the plurality of winding portions.
The plurality of connecting portions are disposed with a gap in any one of the radial direction and the axial direction of the yoke, or a combination thereof,
In at least one of the plurality of connecting portions, an accommodating portion for accommodating another member is formed,
The stator according to any one of claims 10 to 13. The plurality of windings constitute a plurality of phases,
The stator according to any one of claims 10 to 14. The stator according to any one of claims 1 to 15,
A rotor rotated by a rotating magnetic field formed by the stator;
Brushless motor with

Images