JP2019208335A - Motor and pumping apparatus - Google Patents

Abstract

To easily form a push-in portion pushing slack of a crossover wire to an inside in a radial direction.SOLUTION: A motor 2 of a pumping apparatus 1 has an insulator 52 attached to a split core 500. One side surface 520b of a peripheral covering portion 52b of the insulator 52 has a crossover wire guide portion 59 guiding crossover wires 55U, 55V, and 55W connecting coils 53 of the same phase with each other from an inside in a radial direction, and a projection portion 530 projecting from one side surface 520b outside the radial direction of the crossover wire guide portion 59. The crossover wires 55U, 55V, and 55W have a push-in portion 60 pushed from an outside in the radial direction to a gap S1 between the crossover wire guide portions 59 adjacent to each other in a circumferential direction. Since a gap D3 can be formed between the crossover wires 55U, 55V, and 55W and the peripheral covering portion 52b by the projection portion 530, it is easy to form the push-in portion 60. Further, there is little possibility of damaging the coil 53 upon forming the push-in portion 60.SELECTED DRAWING: Figure 9

Description

  The present invention relates to a pump device and a motor used in the pump device.

  Patent Document 1 discloses a motor used in a pump device. The motor of Patent Literature 1 includes a cylindrical stator and a rotor disposed on the inner peripheral side of the stator. The stator is sealed with resin. The resin that seals the stator constitutes the motor case. The motor case and the stator are integrated by arranging the stator in the mold and performing insert shaping. The stator core includes a salient pole that protrudes radially inward from a cylindrical back yoke, and a coil is wound around the salient pole via an insulator. On the outer peripheral side of the coil, a connecting wire led from the salient pole to the salient pole extends in the circumferential direction.

  In the motor of Patent Document 1, a core member formed by linearly arranging and connecting divided cores having salient poles is deformed into an annular shape to form a stator core. The coil is formed by winding a coil wire around the salient pole of each divided core in a state where the divided cores are linearly arranged. Since the connecting wire extends between the adjacent divided cores, the connecting wire is slackened when the core member is deformed into an annular shape. If the crossover wire expands to the outer peripheral side of the stator due to the loosening, for example, when the stator is resin-molded, the crossover wire may come into contact with another member (such as a mold) and be damaged. In patent document 1, it is suppressed that a jumper wire spreads to an outer peripheral side by pushing the slack part of a jumper wire into the radial inside between adjacent division | segmentation cores.

JP, 2006-208562, A

  In Patent Document 1, when an annular float prevention ring is attached to a stator core, the looseness of the jumper is pushed inward in the radial direction by a jumper restricting portion provided on the float prevention ring. However, the structure for attaching other parts such as a floating prevention ring has a problem that the number of parts increases and the cost becomes high.

  There is a method using a jig as another method of pushing the looseness of the connecting wire inward in the radial direction. For example, the nail is extended from the radially outer side toward the crossover, and the nail is turned around the base end of the nail to push the crossover. However, there is a possibility that the crossover cannot be pushed in well, and there is a possibility that the coil is damaged by the nail.

  In view of the above problems, an object of the present invention is to easily form a push-in portion that pushes looseness of a jumper wire radially inward.

In order to solve the above problems, a motor of the present invention includes a rotor and a stator disposed on an outer peripheral side of the rotor, and the stator includes a stator core, a plurality of insulators covering the stator core, and the insulator. A coil wound around the stator core via the stator, and the insulator includes an outer peripheral cover portion that covers a portion of the stator core that is radially outer than the coil, and the axial direction of the outer peripheral cover portion On one side surface, a connecting wire guide portion that guides a connecting wire that connects the coils of the same phase, and a protruding portion that protrudes to the one side on the radially outer side than the connecting wire guide portion are provided, The crossover wire is characterized in that it includes a push-in portion that is pushed into the gap between the crossover wire guide portions adjacent in the circumferential direction from the outside in the radial direction. .

  In this invention, the connecting wire which connects the said coils of the same phase is provided with the pushing part pushed in from the radial direction outer side to the clearance gap between the connecting wire guide parts adjacent in the circumferential direction. Therefore, it is possible to suppress the crossover line from spreading to the outer peripheral side. Moreover, since the protrusion part is provided in the one side surface of the outer peripheral part cover part, a clearance gap can be formed between a crossover and an outer peripheral part cover part. Thereby, it becomes easy to push the connecting wire radially inward by the jig. As a result, it is possible to suppress the connecting wire from spreading to the outer peripheral side, and thus it is possible to suppress the connecting wire from coming into contact with other members and being damaged. Moreover, a crossover can be arrange | positioned in the position of one side of an axial direction with respect to a coil. Therefore, the risk of damaging the coil when forming the pushing portion with the jig can be reduced.

  In the present invention, the stator core includes a plurality of split cores around which the coil is wound via the insulator, and the split cores are arranged in an annular shape. In such a configuration, a manufacturing method of performing a work of winding a coil around each divided core in a state where the divided cores are arranged linearly, and then forming a stator in which the divided cores are annular and the coils are radially arranged. When it is adopted, when the split core is formed into an annular shape, slack is formed in the connecting wire, but in the present invention, the connecting wire is easily pushed inward in the radial direction. Therefore, it is possible to reduce the possibility that the crossover wire extends to the outer peripheral side and is damaged by contact with other members.

  In this invention, the said clearance gap is provided between the two said crossover guide parts formed in the said outer peripheral part cover part, and the said radial direction outer side of each of the said two crossover guide parts It is preferable that the protrusion is provided. If it does in this way, since a pushing part is formed in the one side of an outer peripheral part covering part, a pushing part falls in the clearance gap between adjacent insulators, and a crossover is not damaged. Moreover, when providing the resin sealing member which covers a stator, when injecting resin in a metal mold | die, it can suppress that a pushing part shifts | deviates to an axial direction by the flow of resin.

  In this invention, it is preferable that the said crossover guide part is provided with the convex part protruded to the said radial direction outer side. If it does in this way, a crossover can be guided in the position of a diameter direction outside by a convex part. Therefore, the looseness of the crossover can be reduced. Moreover, since there is little slackness, the amount which pushes a jumper wire to radial inside can be decreased. Therefore, when forming a pushing part with a jig | tool, a possibility that a coil may be damaged can be decreased.

  In the present invention, the radially outer tip of the convex portion is positioned closer to the pushing portion than the circumferential center of the crossover guide portion, and the convex portion is directed from the tip toward the gap. It is preferable to provide an inclined surface directed radially inward. If it does in this way, since a crossover can be pushed in radial direction along an inclined surface, it will be easy to form a pushing-in part. In addition, since the inclined surface is a surface having a large angle with the circumferential direction, it is easy to push the connecting wire radially inward.

  In this invention, the outer peripheral surface of the said coil is located in the said one side rather than the said one side surface. In the present invention, even in such a case, the connecting wire can be held at a position on one side of the outer peripheral portion covering portion by the protruding portion, so that the connecting wire can be routed at a position on one side of the coil. Therefore, when forming a pushing part with a jig | tool, a possibility that a coil may be damaged can be decreased.

In this invention, it has the resin sealing member which covers the said stator. In this invention, in such a structure, it can suppress that a crossover is exposed from the resin sealing member. Accordingly, it is possible to reduce the possibility that the crossover wire contacts a member such as a mold for molding the resin sealing member and is damaged.

  In this case, the resin sealing member includes a plurality of holes that are placement marks of pressing members that press the stator core against a mold for molding the resin sealing member, and the plurality of holes are in the axial direction. The other side surface of the outer peripheral portion covering portion facing the other side is exposed to the outside of the resin sealing member. In this way, the stator core can be reliably positioned in the mold. Therefore, the positional accuracy of the stator core, the insulator, and the coil with respect to the resin sealing member can be increased. Therefore, the possibility that the crossover wire is exposed from the resin sealing member can be reduced.

  Next, a pump device according to the present invention includes the above motor, an impeller attached to a rotating shaft of a rotor, and a pump chamber in which the impeller is disposed.

  According to the present invention, the connecting wire that connects the coils in the same phase includes a pressing portion that is pressed into the gap between the connecting wire guide portions adjacent in the circumferential direction from the outside in the radial direction. Therefore, it is possible to suppress the crossover line from spreading to the outer peripheral side. Moreover, since the protrusion part is provided in the one side surface of the outer peripheral part cover part, a clearance gap can be formed between a crossover and an outer peripheral part cover part. Thereby, it becomes easy to push the connecting wire radially inward by the jig. As a result, it is possible to suppress the connecting wire from spreading to the outer peripheral side, and thus it is possible to suppress the connecting wire from coming into contact with other members and being damaged. Moreover, a crossover can be arrange | positioned in the position of one side of an axial direction with respect to a coil. Therefore, the risk of damaging the coil when forming the pushing portion with the jig can be reduced.

1 is an external perspective view of a pump device to which the present invention is applied. It is sectional drawing of a pump apparatus. It is the disassembled perspective view which looked at the cover member, the stator, and the resin sealing member from the output side. It is explanatory drawing of the manufacturing method of a stator. It is the perspective view which looked at the stator from the output side. It is the top view which looked at the stator from the non-output side. It is the top view which looked at the stator from the output side. It is the top view which looked at the stator from the non-output side. It is a partial expansion perspective view of a stator. It is the side view which looked at the division | segmentation core which attached the insulator from the radial direction outer side. It is the top view which looked at the split core which attached the insulator from the output side.

  Hereinafter, embodiments of a pump device and a motor to which the present invention is applied will be described with reference to the drawings.

(Overall configuration of pump device)
FIG. 1 is an external perspective view of a pump device 1 to which the present invention is applied. FIG. 2 is a cross-sectional view of the pump device 1. The pump device 1 is attached to the motor 2, the case 2 that forms the pump chamber 4 between the motor 2, and the impeller that is attached to the rotating shaft 5 of the motor 2 and disposed in the pump chamber 4. 6. The case body 3 is provided with a fluid suction port 7 and a discharge port 8. When the motor 2 is driven to rotate the impeller 6, fluid such as water sucked from the suction port 7 is discharged from the discharge port 8 through the pump chamber 4.

  In this specification, the symbol L indicates the axial direction of the motor 2, the output side L1 is one side in the axis L direction, and the counter-output side L2 is the other side in the axis L direction. FIG. 1 is an external perspective view of the pump device 1 as viewed from the non-output side L2. The rotation shaft 5 of the motor 2 extends in the direction of the axis L. The side on which the impeller 6 is disposed with respect to the motor 2 is referred to as an output side L1, and the side opposite to the output side L1 is referred to as a counter-output side L2. In addition, a direction orthogonal to the axis L is a radial direction, and a periphery of the axis L is a circumferential direction. As shown in FIG. 2, the suction port 7 is provided in the case body 3 at a position overlapping the axis L of the rotation shaft 5 of the motor 2, and the discharge port 8 is provided on the outer side in the radial direction of the rotation shaft 5.

  FIG. 3 is an exploded perspective view of the cover member 14, the stator 11, and the resin sealing member 13 as viewed from the output side L 1, with the cover member 14 constituting the housing 12 of the motor 2 removed from the resin sealing member 13. Indicates. The motor 2 is a DC brushless motor, and includes a rotor 10, a stator 11, and a housing 12 that stores these. The housing 12 includes a resin sealing member 13 that covers the stator 11 from the non-output side L2, and a cover member 14 that covers the resin sealing member 13 from the output side L1. The cover member 14 is fixed to the resin sealing member 13.

  The case member 3 covers the cover member 14 from the output side L1. Thereby, the space defined between the cover member 14 and the case body 3 becomes the pump chamber 4. The resin sealing member 13 holds a first bearing member 15 that rotatably supports an end of the rotating shaft 5 of the rotor 10 on the counter-output side L2. The cover member 14 holds a second bearing member 16 that rotatably supports the middle of the rotary shaft 5. An end portion on the output side L1 of the rotary shaft 5 protrudes from the housing 12 of the motor 2 into the pump chamber 4, and an impeller 6 is attached thereto.

(Rotor)
As shown in FIG. 2, the rotor 10 includes a rotating shaft 5, a magnet 20 that surrounds the rotating shaft 5, and a holding member 21 that holds the rotating shaft 5 and the magnet 20. The magnet 20 is annular and is arranged coaxially with the rotating shaft 5. On the outer peripheral surface of the magnet 20, N poles and S poles are alternately magnetized in the circumferential direction. The rotating shaft 5 is made of stainless steel. The rotary shaft 5 is formed with an annular groove near the center in the direction of the axis L, and the E-ring 24 is fixed to the annular groove. The E ring 24 is a metal plate-like member. The E ring 24 is embedded in the end face of the output side L1 of the holding member 21.

  The rotor 10 includes a first bearing plate 45 disposed on the non-output side L2 of the holding member 21 and a second bearing plate 46 disposed on the output side L1 of the holding member 21. The first bearing plate 45 and the second bearing plate 46 are substantially annular metal plates. For example, the first bearing plate 45 and the second bearing plate 46 are metal washers. The first bearing plate 45 covers the end surface of the holding member 21 on the non-output side L2 in a state where the rotation shaft 5 is passed through the center hole. The second bearing plate 46 covers the end surface of the output side L1 of the holding member 21 and the E-ring 24 in a state where the rotation shaft 5 is passed through the center hole. The second bearing plate 46 is in surface contact with the E-ring 24. The first bearing plate 45 and the second bearing plate 46 are held on the end face on the counter-output side L2 and the end face on the output side L1 of the holding member 21, respectively. The sliding heat generated by the sliding of the second bearing plate 46 and the second bearing member 16 during rotation of the rotor 10 is transmitted to the rotating shaft 5 via the E ring 24 and radiated.

(Stator)
FIG. 4 is an explanatory diagram of a method for manufacturing the stator 11. 5 and 6 are perspective views of the stator 11, FIG. 5 is a perspective view seen from the output side L1, and FIG. 6 is a perspective view seen from the non-output side L2. The stator 11 connects an annular stator core 51 positioned on the outer peripheral side of the rotor 10, a plurality of coils 53 wound around the stator core 51 via an insulator 52, and a power supply line for supplying power to each coil 53. Connector 54.

The stator core 51 is a laminated core formed by laminating thin magnetic plates made of a magnetic material. As shown in FIGS. 5 and 6, the stator core 51 includes an annular portion 56 and a plurality of salient pole portions 57 that protrude radially inward from the annular portion 56. The plurality of salient pole portions 57 are formed at an equiangular pitch, and are arranged at a constant pitch in the circumferential direction. The inner peripheral side end surface 57a of the salient pole portion 57 is an arc surface centered on the axis L. The inner peripheral side end surface 57a of the salient pole portion 57 faces the outer peripheral surface of the magnet 20 of the rotor 10 with a slight gap.

  The insulator 52 is made of an insulating material such as resin. The insulator 52 has a flanged cylindrical shape having flanges at both ends in the radial direction. The insulator 52 is attached to each of the plurality of salient pole portions 57. The coil 53 is wound around each of the plurality of salient pole portions 57 via the insulator 52. The insulator 52 partially covers the counter-output side end face 56 a (see FIG. 6) of the annular portion 56 of the stator core 51, but the outer peripheral edge portion of the counter-output side end face 56 a is not covered by the insulator 52. Similarly, the insulator 52 partially covers the output side end surface 56 b (see FIG. 5) of the annular portion 56 of the stator core 51, but the outer peripheral edge portion of the output side end surface 56 b is not covered by the insulator 52.

  The coil 53 is constituted by a conducting wire 55 made of an aluminum alloy or a copper alloy. In this embodiment, a conductive wire 55 in which an aluminum alloy is covered with a copper alloy is used. In the present embodiment, the number of salient pole portions 57, insulators 52, and coils 53 is nine. The motor 2 is a three-phase brushless motor, three of the nine coils 53 are U-phase coils 53U, three of the remaining six are V-phase coils 53V, and the remaining three are W-phase coil 53W. U-phase coil 53U, V-phase coil 53V and W-phase coil 53W are arranged in this order in the circumferential direction. Other arrangements may be used.

  The three U-phase coils 53U are formed by sequentially winding one conductor 55 around the three salient poles 57, and the three V-phase coils 53V include three conductors 55. The three W-phase coils 53W are formed by sequentially winding one conductive wire 55 around the three salient pole portions 57. Three conducting wires 55 (see FIG. 6) constituting the U-phase coil 53U, the V-phase coil 53V, and the W-phase coil 53W are routed to the connector 54. U-phase coil 53 </ b> U, V-phase coil 53 </ b> V, and W-phase coil 53 </ b> W are connected to connector 54 through conductive wire 55, respectively.

  As shown in FIGS. 5 and 6, the insulator 52 includes outer peripheral cover portions 52 a and 52 b that cover the end surface in the axis L direction of the stator core 51 on the outer peripheral side of the coil 53. The outer peripheral cover portion 52 a partially covers the non-output side end surface 56 a of the annular portion 56 of the stator core 51. Further, the outer peripheral cover portion 52 b partially covers the output side end surface 56 b of the annular portion 56 of the stator core 51. The connector 54 is disposed on the outer peripheral side of the outer peripheral portion covering portion 52a, and is connected to the outer peripheral portion covering portion 52a.

  7 and 8 are plan views of the stator 11, FIG. 7 is a plan view seen from the output side L1, and FIG. 8 is a plan view seen from the non-output side L2. The inner peripheral edges of the outer peripheral cover portions 52a and 52b are linearly orthogonal to the circumferential center line Q of the insulator 52 (see FIGS. 7 and 8). 7 and 8, only one center line Q is illustrated, but a straight line passing through the center in the circumferential direction of each insulator 52 is referred to as a center line Q. As shown in FIGS. 6 and 8, the eight insulators 52 except for the insulator 52 provided at the same angular position as the connector 54 protrude toward the non-output side L2 along the inner peripheral edge of the outer peripheral portion covering portion 52a. A wall portion 58 that is a protruding portion is formed. As shown in FIGS. 5 and 7, each of the nine insulators 52 is formed with a wall-like crossover guide portion 59 that protrudes toward the output side L1 along the inner peripheral edge of the outer peripheral portion covering portion 52b. ing. On the counter-output side L2 of the stator 11, the conducting wire 55 and the common wire 55A are guided by the wall portion 58. Further, on the output side L1 of the stator 11, the lead wire 55 (crossover wires 55U, 55V, 55W) is guided by the crossover guide portion 59.

(Manufacturing method of stator)
In the stator 11 of this embodiment, the stator core 51 is configured by connecting a plurality of divided cores 500 in an annular shape. FIG. 4 shows a state in which the split cores 500 are arranged in a line, the insulator 52 is attached to each split core 500, and the coil 53 is wound. The stator core 51 includes the same number of divided cores 500 as the number of coils 53 (9 in this embodiment). Each divided core 500 includes an arc portion 501 obtained by dividing the annular portion 56 of the stator core 51 at equal angular intervals, and a salient pole portion 57 protruding radially inward from the center in the circumferential direction of the arc portion 501.

  At the time of manufacturing the stator 11, the nine divided cores 500 to which the insulators 52 are attached are arranged in a straight line as shown in FIG. The U-phase coil 53U, the V-phase coil 53V, and the W-phase coil 53W are wound so that the arrangement order is the same as the arrangement order of the V-phase coil 53V and the W-phase coil 53W. In FIG. 4, the leading split core 500 is a V-phase split core 500V in which a V-phase coil 53V is formed. The second split core 500 is a U-phase split core 500U in which a U-phase coil 53U is formed. The third split core 500 is a W-phase split core 500W in which a W-phase coil 53W is formed. Similarly, the fourth to ninth divided cores 500 are arranged in the order of a V-phase divided core 500V, a U-phase divided core 500U, and a W-phase divided core 500W.

  After the winding operation to the nine divided cores 500 arranged in a straight line is completed, a connection body of these nine divided cores 500 is formed in an annular shape as a whole. For example, the end portions of the arc portions 501 of the adjacent divided cores 500 are connected to each other to form a connection body of nine divided cores 500 in an annular shape.

(Crossover guide section)
As shown in FIGS. 5 and 7, the crossover guide portions 59 are formed at both ends in the circumferential direction of the inner peripheral edge of the outer peripheral portion covering portion 52 b in each of the nine insulators 52. The crossover guide portion 59 has a flat plate shape orthogonal to the center line Q in the circumferential direction of the insulator 52 provided with the crossover guide portion 59. That is, each of the nine insulators 52 includes two crossover guide portions 59 that are spaced apart in the circumferential direction, and a gap S1 that is formed between the two crossover guide portions 59. The two crossover guide portions 59 formed in each insulator 52 are located on the same plane and have the same shape.

  As shown in FIGS. 5 and 7, the connecting wire 55 </ b> U, the connecting wire 55 </ b> V, and the connecting wire 55 </ b> W that connect the coils 53 having the same phase are guided by the connecting wire guide unit 59 and routed around the coil 53. . The connecting wire 55U is a conducting wire 55 that connects the U-phase coils 53U, the connecting wire 55V is a conducting wire 55 that connects the V-phase coils 53V, and the connecting wire 55W is a conducting wire 55 that connects the W-phase coils 53W. Each insulator 52 is provided with two connecting wire guide portions 59 that guide the connecting wires 55U, 55V, and 55W in the circumferential direction.

  For example, the connecting wire 55U passed between the U-phase coil 53U and another U-phase coil 53U is drawn to the outer peripheral side from the gap S1 provided in the insulator 52 around which the U-phase coil 53U is wound. It is hung on one of the wire guide portions 59 (for example, the crossover guide portion 59 on the side of the adjacent V-phase coil 53V) and is routed to the side of the adjacent insulator 52 outside the crossover wire guide portion 59 in the radial direction. . And it is guided to the four crossover guide parts 59 provided in the two insulators 52 provided with the V-phase coil 53V and the W-phase coil 53W, and pulled to the insulator 52 provided with the next U-phase coil 53U. Turned. And it is hung on the connecting wire guide part 59 (for example, the connecting wire guide part 59 by the side of the W-phase coil 53W) provided in the insulator 52 in which the next U-phase coil 53U was provided, and from the clearance S1 to the U-phase coil 53U Drawn into the side.

  The connecting wire 55U passed between the U-phase coil 53U and another U-phase coil 53U is formed with a pushing portion 60 in which the conducting wire 55 is pushed into the inner peripheral side of the connecting wire guide portion 59. As described above, each insulator 52 is provided with two crossover guide portions 59 that are spaced apart in the circumferential direction, and the slack portion of the crossover wire 55U is removed from the gap S1 between the two crossover guide portions 59. By pushing inward in the radial direction of the crossover guide part 59, the pushing part 60 is formed. By pushing the slack portion of the connecting wire 55U into the gap S1 to form the pushing portion 60, the slackness of the connecting wire 55U is suppressed. Therefore, it can suppress that the crossover 55U spreads to the outer peripheral side. In this embodiment, since there are two gaps S1 between the U-phase coil 53U and another U-phase coil 53U, the pushing portions 60 are formed at two places.

  The connecting wires 55V and 55W are routed in the same shape as the connecting wire 55U. That is, the crossover wires 55V and 55W are pulled out from the gap S1 to the outer peripheral side, hooked on the crossover guide portion 59, drawn out to the outside in the radial direction of the crossover guide portion 59, and guided and crossed by the crossover guide portion 59. It is drawn in the circumferential direction outside the line guide portion 59 in the radial direction. Further, when passing through the two insulators 52, the pushing portions 60 are formed at two places. And it is hung on the crossover guide part 59 formed in the insulator 52 in which the other coil 53 of the same phase was provided, and is drawn in from the clearance gap S1 to the coil 53 side.

  As shown in FIG. 4, when the winding work is performed on the nine divided cores 500 arranged in a straight line, the connecting wire 55V drawn from the leading V-phase divided core 500V is converted into the next V-phase divided core 500V. Passed to. At that time, the crossover 55V is passed across the gap D1 between the end faces of the arc portions 501 of the adjacent split cores 500. Similarly, the other connecting wires 55U and 55W are also passed over the gap D1 between the end surfaces of the adjacent arc portions 501. As described above, when the nine divided cores 500 are formed in an arc shape, the end surfaces of the arc portions 501 come into contact with each other, and the gap D1 is eliminated. Therefore, slack is formed in the connecting wires 55U, 55V, and 55W. In this embodiment, the slack is eliminated by forming the pushing portion 60.

  FIG. 9 is a partially enlarged perspective view of the stator 11. 10 is a side view of the split core 500 to which the insulator 52 is attached as viewed from the outside in the radial direction, and FIG. 11 is a plan view of the split core 500 to which the insulator 52 is attached as viewed from the output side L1. In this specification, the surface on the output side L1 of the outer peripheral cover 52b that covers the split core 500 from the output side L1 is defined as one side surface 520b. Further, the surface on the output side L1 of the outer peripheral cover 52a that covers the split core 500 from the output side L1 is defined as the other side surface 520a. The crossover guide part 59 protrudes from the one side surface 520b of the outer peripheral part covering part 52b to the output side L1 (one side in the direction of the axis L).

  The radially inner surface of the crossover guide part 59 is a plane orthogonal to the circumferential center line Q of the insulator 52. On the other hand, a convex portion 590 protruding outward in the engaging direction is formed on the radially outer surface of the crossover guide portion 59. The tip 591 of the convex portion 590 is located on the gap S1 side (that is, on the pushing portion 60 side) with respect to the circumferential center of the crossover guide portion 59. The convex portion 590 includes an inclined surface 592 that goes inward in the radial direction from the tip 591 toward the gap S1, and an inclined surface 593 that goes inward in the radial direction from the tip 591 toward the opposite side of the gap S1.

  As illustrated in FIG. 9, a gap D <b> 2 is formed between the outer peripheral cover portions 52 b of the insulators 52 adjacent in the circumferential direction. On both sides in the circumferential direction of the gap D2, the connecting wires 55U, 55V, and 55W are guided by the inclined surface 593 of the connecting wire guide portion 59 and are drawn into a substantially arc shape. Since the convex portion 590 has a shape protruding outward in the radial direction, the crossover lines 55U, 55V, and 55W can be guided on the outer side in the radial direction than the plane orthogonal to the center line Q. Accordingly, it is possible to reduce the slack formed in the crossover wires 55U, 55V, and 55W.

  On the other hand, the inclined surface 592 of the crossover guide portion 59 is a surface that is inclined radially inward from the tip 591 of the convex portion 590. Therefore, it becomes easy to push the connecting wires 55U, 55V, and 55W radially inward by setting the connecting wires 55U, 55V, and 55W along the inclined surface 592. In this embodiment, since the tip 591 of the convex portion is located on the gap S1 side with respect to the circumferential center of the crossover guide portion 59, the angle θ (see FIG. 11) formed by the circumferential direction and the inclined surface 592 is large. . Therefore, it is easy to push the connecting wires 55U, 55V, 55W inward in the radial direction.

(Protruding part)
As shown in FIGS. 9 to 11, the insulator 52 protrudes from the one side surface 520 b of the outer peripheral portion covering portion 52 b to the output side L <b> 1 (one side in the axis L direction) on the outer side in the radial direction of the crossover guide portion 59. Part 530. The protruding portion 530 is located on the radially outer side of the inclined surface 593 of the crossover guide portion 59. An upper end surface 531 which is a surface on the output side L1 of the protruding portion 530 is a surface perpendicular to the direction of the axis L, and is connected to the inclined surface 593. The outer peripheral edge of the projecting portion 530 has an arc shape along the outer peripheral edge of the outer peripheral portion covering portion 52b, and is located slightly on the inner peripheral side from the outer peripheral edge of the outer peripheral portion covering portion 52b.

  The protruding portion 530 restricts the connecting wires 55U, 55V, and 55W from moving in the direction of the one side surface 520b (that is, the non-output side L2). Since the connecting wires 55U, 55V, and 55W are routed in the circumferential direction on the output side L1 of the upper end surface 531 of the projecting portion 530, the distance from the one side surface 520b by a distance equal to or greater than the height H (see FIG. 10) of the projecting portion 530. Held in a distant position. In this embodiment, the height H of the protrusion 530 is approximately the same as the outer diameter of the conductor 55. Accordingly, a gap D3 (see FIG. 10) equal to or more than one conductor is formed between the one side surface 520b and the connecting wires 55U, 55V, 55W. The height H may be larger than the outer diameter of the conducting wire 55.

  By holding the connecting wires 55U, 55V, 55W at a position separated from at least one conductor from the one side surface 520b, the connecting wires 55U, 55V, 55W can be surely pushed in when they are pushed inward in the radial direction by a jig. . For example, when using a jig that extends a claw from the outside in the radial direction toward the crossover, turns the claw around the base end of the claw, and pushes in the crossover, use one of the crossovers 55U, 55V, and 55W. It is possible to push in more reliably if it is held at a position away from the side surface 520b.

  As shown in FIG. 10, when the split core 500 is viewed from the outside in the radial direction, the outer peripheral surface 53a at the end of the coil 53 on the outer peripheral portion covering portion 52b side is more on the output side L1 than the one side surface 520b of the outer peripheral portion covering portion 52b. It protrudes (one side in the direction of the axis L). Accordingly, in the state where there is no gap D3 between the crossover wires 55U, 55V, 55W and the one side surface 520b, the crossover wires 55U, 55V, 55W and the jig contact the end of the coil 53 when forming the push-in portion 60. As a result, the coating of the conductor 55 may be damaged, and the coil 53 may be damaged. However, in this embodiment, the crossovers 55U, 55V, and 55W can be held at a position separated from the one side surface 520b by at least the height H by the protruding portion 530. Therefore, since the position of the end portion of the coil 53 and the crossover wires 55U, 55V, and 55W in the axis L direction can be shifted, the coil 53 is less likely to be damaged when the pushing portion 60 is formed by the jig.

(Common wire guide)
As shown in FIGS. 6 and 8, in this embodiment, on the counter-output side L <b> 2 of the stator 11, the end portion of the conducting wire 55 constituting the U-phase coil 53 </ b> U, and the end portion of the conducting wire 55 constituting the V-phase coil 53 </ b> V The end portions of the conducting wire 55 constituting the W-phase coil 53W are connected to each other to constitute a common wire 55A. For example, three conductive wires 55 are soldered to form a common wire 55A. In addition, on the opposite-to-output side L2 of the stator 11, the conducting wire 55 connected to each of the U-phase coil 53U, the V-phase coil 53V, and the W-phase coil 53W is routed to the connector 54.

  The wall 58 has a different shape depending on the angular position of the insulator 52. That is, the wall 58 is circumferentially connected to the first wall 58 </ b> A formed on the two insulators 52 </ b> A located on the opposite side in the radial direction with respect to the connector 54 and the insulator 52 at the same angular position as the connector 54. The second wall portion 58B formed on the two adjacent insulators 52B and the third wall portion 58C formed on the other four insulators 52C are configured. The third wall portion 58C has the same shape as the crossover guide portion 59 described above. That is, each of the four insulators 52C includes two third wall portions 58C that are spaced apart from each other in the circumferential direction, and includes a gap S2 formed between the two third wall portions 58C.

  As shown in FIGS. 6 and 8, the common line 55A extends from the gap S2 between the insulator 52A provided with the first wall portion 58A and the third wall portion 58C provided in the insulator 52C adjacent in the circumferential direction to the outer peripheral side. Pulled out. Then, the third wall 58C is hung on the third wall 58C located next to the first wall 58A, passed through the radially outer side of the third wall 58C and drawn toward the first wall 58A, and then the third wall. It is pushed inward from the clearance S3 between the portion 58C and the first wall portion 58A. That is, the third wall portion 58C adjacent to the first wall portion 58A in the circumferential direction functions as a common line guide portion that guides the common line 55A.

  The common wire 55A is supported by the first wall portion 58A with the tip directed toward the inner peripheral side, and a state is formed in which the common wire 55A is difficult to come off from the first wall portion 58A. Furthermore, the tip of the common wire 55A is supported so as not to protrude outward in the radial direction of the stator 11. That is, the common line 55 </ b> A is temporarily fixed to the insulator 52. By molding the resin sealing member 13 in this state, the common wire 55 </ b> A is prevented from jumping out to the outside in the radial direction of the stator 11.

(Arrangement trace of the pressing pin in the resin sealing member)
In this embodiment, when the resin sealing member 13 is formed by placing the stator 11 in the mold, the pressing is a pressing member that presses the stator core 51 in the direction of the axis L via the insulator 52 and presses it against the end surface of the mold. Pin 18 (see FIG. 8) is used. The groove portion 61A formed in the first wall portion 58A has a concave shape for avoiding interference between the pressing pin 18 disposed at the angular position where the first wall portion 58A is disposed and the first wall portion 58A. Similarly, the groove portion 61B formed in the second wall portion 58B has a concave shape for avoiding interference between the pressing pin 18 disposed at the angular position where the second wall portion 58B is disposed and the second wall portion 58B. is there.

  As will be described later, in this embodiment, six pressing pins 18 are used. The resin sealing member 13 is formed with six holes 17 (see FIG. 1) which are the traces of the pressing pins 18. Two of the six pressing pins 18 press the center in the circumferential direction of the insulator 52A provided with the first wall portion 58A, and two of the remaining four pins are provided with the second wall portion 58B. The center in the circumferential direction of the insulator 52B is pressed, and the remaining two presses the center in the circumferential direction of the insulator 52C provided with the third wall portion 58C. Since the third wall portion 58C is arranged avoiding the center in the circumferential direction of the insulator 52C, it does not interfere with the pressing pin 18.

  The holes 17 that are the traces of the six pressing pins 18 are provided at angular positions that coincide with the circumferential center of the insulator 52. In the insulator 52A provided with the first wall portion 58A, the first wall portion 58A is disposed at an angular position (center in the circumferential direction) where the hole 17 is formed. Thus, by providing the first wall portion 58A at the angular position where the pressing pin 18 is provided, the common wire 55A can be supported so as not to protrude to the pressing pin 18 side. Therefore, it is possible to prevent the pressing pin 18 and the common wire 55A from interfering with each other. Further, it is possible to prevent a situation in which the common wire 55A is sandwiched between the pressing pin 18 and the insulator 52A and the wire is disconnected.

Similarly, in the insulator 52B provided with the second wall portion 58B, the second wall portion 58B is arranged at an angular position (center in the circumferential direction) where the hole 17 is formed. Thus, by providing the second wall portion 58B at the angular position where the pressing pin 18 is provided, it is possible to support the conductive wire 55 routed to the connector 54 so as not to protrude to the pressing pin 18 side. Accordingly, it is possible to prevent the pressing pin 18 and the conducting wire 55 from interfering with each other. Further, it is possible to prevent a situation in which the conducting wire 55 is sandwiched between the pressing pin 18 and the insulator 52B and the wire is disconnected.

(connector)
The connector 54 has a shape in which a male external connector can be attached and detached. The connector 54 is connected to one of the plurality of insulators 52. The connector 54 includes a substantially rectangular parallelepiped connector housing 30, a connection portion 31 that connects the connector housing 30 and the insulator 52, and terminal pins 40 that are held by the connector housing 30. The connector housing 30 is formed with a connection opening 30a that opens to the non-output side L2. When the male external connector is attached to the connection opening 30a, the terminal provided on the external connector and the terminal pin 40 come into contact with each other.

  Connector 54 includes a terminal pin 40 to which one end portion of conducting wire 55 constituting U-phase coil 53U is connected, a terminal pin 40 to which one end portion of conducting wire 55 constituting V-phase coil 53V is connected, and W-phase coil 53W. Is a female connector 54 having three terminal pins 40 connected to one end of a conducting wire 55 constituting the terminal. One conducting wire 55 is connected to each of the three terminal pins 40. The terminal pin 40 is press-fitted into the connector housing 30 and protrudes toward the connection opening 30a.

(Resin sealing member)
As shown in FIGS. 2 and 3, the resin sealing member 13 includes a coil 53, an insulator 52, and a substantially disk-shaped sealing member bottom portion 65 that covers the stator core 51 from the non-output side L2. Further, the resin sealing member 13 includes a connector sealing portion 66 extending from the sealing member bottom portion 65 to the outer peripheral side and covering the connector 54, and extending from the sealing member bottom portion 65 to the output side L1, extending to the coil 53, the insulator 52, and And a sealing member cylinder portion 67 covering the stator core 51. The sealing member cylinder portion 67 has a thick cylindrical shape. The central axis of the sealing member cylinder 67 coincides with the axis L of the motor 2.

  A bearing member holding recess 68 is provided in the central portion of the sealing member bottom 65. The bearing member holding recess 68 holds the first bearing member 15 that rotatably supports the end on the counter-output side L2 of the rotating shaft 5 of the rotor 10. The first bearing member 15 is made of resin, and includes a cylindrical support portion provided with a through hole in which the rotation shaft 5 is disposed, and a flange portion that extends from the end of the output side L1 of the cylindrical portion to the outer peripheral side. Shape. The contour shape of the first bearing member 15 viewed from the direction of the axis L is a D-shape. The first bearing member 15 is fixed to the bearing member holding recess 68 in a state where the collar portion is in contact with the sealing member bottom portion 65 from the output side L1. As for the 1st bearing member 15, the support part in which the rotating shaft 5 is penetrated functions as a radial bearing of the rotating shaft 5, and a collar part functions as a thrust bearing of the rotor 10. FIG. That is, the first bearing plate 45 fixed to the holding member 21 of the rotor 10 slides on the flange portion of the first bearing member 15.

  As shown in FIG. 2, the sealing member bottom portion 65 includes a cylindrical bearing support portion 65a that surrounds the first bearing member 15 from the outer peripheral side in the radial direction, and a circular sealing portion that seals the lower end opening of the bearing support portion 65a. 65b, a coil sealing portion 65c located on the lower side of the coil 53, and a connection portion 65d for connecting the bearing support portion 65a and the coil sealing portion 65c. The bearing support portion 65 a and the blocking portion 65 b constitute a bearing member holding recess 68. The surface on the counter-output side L2 of the coil sealing portion 65c has a tapered surface 65e that inclines toward the counter-output side L2 toward the outer peripheral side along the shape of each coil 53 wound around the insulator 52, and a tapered surface 65e. And an annular surface 65f perpendicular to the axis L direction.

  The connector 54 has an end portion of the connector housing 30 where a connection opening 30a to / from which a male connector is attached / detached protrudes from the connector sealing portion 66 to the non-output side L2 and is exposed to the outside. The connector sealing portion 66 prevents the terminal pin 40 from coming off and protects the terminal pin 40 from fluid. Further, the conductive wire 55 routed from the coil 53 to the connector 54 is also covered with the connector sealing portion 66 and protected from the fluid.

  As shown in FIG. 3, the sealing member cylinder part 67 includes a large diameter cylinder part 81 connected to the sealing member bottom part 65 and a small diameter cylinder part 82 having a smaller outer diameter than the large diameter cylinder part 81. The small-diameter cylindrical portion 82 is a first small-diameter cylindrical portion 82a that constitutes an end portion on the output side L1 of the sealing member cylindrical portion 67, and a first small-diameter cylindrical portion 82a provided between the first small-diameter cylindrical portion 82a and the large-diameter cylindrical portion 81. Two small-diameter cylindrical portions 82b are provided. The first small diameter cylindrical portion 82a has a slightly smaller outer diameter than the second small diameter cylindrical portion 82b.

  The outer diameter of the large diameter cylindrical portion 81 is larger than the outer diameter of the annular portion 56 of the stator core 51, and the outer diameter of the second small diameter cylindrical portion 82 b is smaller than the outer diameter of the annular portion 56 of the stator core 51. Further, the step surface 70 connecting the large diameter cylindrical portion 81 and the small diameter cylindrical portion 82 is located on the same plane as the output side end surface 56 b of the annular portion 56 of the stator core 51. Therefore, a plurality of arc-shaped openings 83 (see FIG. 3) are formed in the inner peripheral portion of the stepped surface 70 to expose the outer peripheral edge portion of the output side end surface 56b of the annular portion 56 of the stator core 51 to the output side L1. The

  As shown in FIGS. 2 and 3, the inner peripheral surface of the sealing member cylindrical portion 67 is smaller than the small-diameter inner peripheral surface portion 67a and the small-diameter inner peripheral surface portion 67a from the non-output side L2 toward the output side L1. A large-diameter inner peripheral surface portion 67b having a large inner diameter is provided. As shown in FIG. 3, the small-diameter inner peripheral surface portion 67a is provided with a plurality of openings that expose the inner peripheral end surfaces 57a of the salient pole portions 57 of the stator core 51 to the inner peripheral side. The small-diameter inner peripheral surface portion 67a is provided with a plurality of groove-shaped notches 69 extending in the axis L direction. Each of the plurality of cutouts 69 is located at the center in the circumferential direction of each salient pole portion 57 of the stator core 51, and from the output side end surface 57b (see FIG. 5) of the salient pole portion 57 to the output side of the small-diameter inner circumferential surface portion 67a. It extends to the end face of L1. Therefore, at the angular position where the notch 69 is provided, the output side end face 57b of the stator core 51 salient pole part 57 is exposed to the output side L1.

  Four engaging protrusions 85 are provided on the outer peripheral surface of the large-diameter cylindrical portion 81 so as to protrude outward at equal angular intervals. The engagement protrusion 85 engages with a rotation engagement portion 86 provided on the cover member 14. The engagement protrusion 85 engages with the rotation engagement portion 86 and restricts the cover member 14 from being detached from the resin sealing member 13.

  The resin sealing member 13 completely covers the coil 53 and protects the coil 53 from fluid. The resin sealing member 13 is also integrally formed up to the connector sealing portion 66 that covers the connector 54 except for the opening (connection opening 30 a) through which the male connector is attached and detached, and is assembled to the connector 54. The terminal pin 40 is prevented from coming off and the connecting portion between the terminal pin 40 and the conducting wire 55 is protected from fluid. The resin sealing member 13 is formed of BMC (Bulk Molding Compound). In this embodiment, the stator 11 is placed in a mold, and a resin material is injected into the mold and cured to form the resin sealing member 13. That is, the resin sealing member 13 is integrally formed with the stator 11 by insert molding.

When insert molding is performed, in a state where the stator core 51 disposed in the mold is positioned in contact with the mold in the radial direction and the axis L direction, resin is injected into the mold to mold the resin sealing member 13. To do. Thereby, the precision of the relative position of the stator core 51 and the resin sealing member 13 improves. For example, a cylindrical mold part is provided in the mold, and the stator core 51 is positioned in the radial direction by bringing the outer peripheral surface of the mold part into contact with the inner peripheral side end face 57a of each salient pole part 57. As a result, as described above, the inner peripheral end surface 57 a of each salient pole portion 57 of the stator core 51 is exposed from the resin sealing member 13. When insert molding is performed, the mold is provided with a first contact portion that can contact the output-side end surface 57b of each salient pole portion 57 and a second contact that can contact the output-side end surface 56b of the annular portion 56. A contact portion is provided, and the first contact portion and the second contact portion are brought into contact with the stator core 51 to position the stator core 51 in the axis L direction. As a result, as described above, a part of the output side end face 57b of each salient pole portion 57 of the stator core 51 is exposed to the output side L1. Moreover, the outer peripheral part of the output side end surface 56b of the annular part 56 is exposed to the output side L1.

  As shown in FIG. 1, a plurality of holes 17 are formed in the sealing member bottom 65 from the surface on the counter-output side L2 of the sealing member bottom 65 to the end surface on the counter-output side L2 of the insulator 52. In this embodiment, six holes 17 are formed in the sealing member bottom 65. Specifically, a set of two holes 17 arranged at a 40 ° pitch centered on the axis L is formed at three locations at a 120 ° pitch. As described in the description of the structure of the wall portion 58 provided in the insulator 52, the hole 17 pushes the stator 11 set in the mold at the time of molding in the direction of the axis L, thereby supporting the support surface (described above). The shape corresponds to the pressing pin 18 for pressing against the first contact portion and the second contact portion).

(Cover member and its fixing structure)
The cover member 14 is made of resin and is fixed to the output side L1 of the resin sealing member 13. As shown in FIG. 3, the cover member 14 includes a disk-shaped cover member ceiling portion 91 and a cover member cylinder portion 92 that protrudes from the cover member ceiling portion 91 to the non-output side L2. A through hole 93 (see FIG. 2) that penetrates in the direction of the axis L is provided at the center of the cover member ceiling portion 91. A circular recess 94 surrounding the through hole 93 is provided in the center of the output side L1 surface of the cover member ceiling 91, and an annular seal member 95 is disposed in the circular recess 94. The seal member 95 is disposed in the gap between the rotating shaft 5 and the cover member 14.

  A surface of the cover member ceiling portion 91 on the side opposite to the output side L2 is provided with a bearing member holding cylinder portion 97 coaxial with the through hole 93 at the center thereof. As shown in FIG. 2, the second bearing member 16 is held in the center hole of the bearing member holding cylinder 97. The 2nd bearing member 16 arrange | positions the same member as the 1st bearing member 15 mentioned above reversely to the axis line L direction. That is, the second bearing member 16 is made of resin, and has a cylindrical support portion provided with a through hole in which the rotating shaft 5 is disposed, and a flange portion that extends from the end portion on the output side L1 of the cylindrical portion to the outer peripheral side. Prepare. The second bearing member 16 is fixed to the bearing member holding cylinder 97 in a state in which the flange portion is in contact with the bearing member holding cylinder 97 from the non-output side L2. As for the 2nd bearing member 16, the support part in which the rotating shaft 5 is penetrated functions as a radial bearing of the rotating shaft 5, and a collar part functions as a thrust bearing of the rotor 10. FIG. That is, the second bearing plate 46 fixed to the holding member 21 of the rotor 10 slides on the flange portion of the second bearing member 16.

  The cover member 14 is placed on the resin sealing member 13 from the output side L1 in a state where the rotor 10 is disposed inside the resin sealing member 13 and the rotor 10 is supported by the first bearing member 15. At this time, an adhesive is applied to the fixed surface 71 (see FIG. 3) that is the end surface of the output side L1 of the sealing member cylindrical portion 67. The adhesive is cured in a state where the gap between the sealing member cylinder portion 67 and the cover member ceiling portion 91 is filled.

The cover member 14 is positioned in the axis L direction by the step surface 73 provided on the cover member tube portion 92 and the step surface 70 provided on the outer peripheral surface of the resin sealing member 13 abutting in the axis L direction. Is done. Thereby, the cover member ceiling part 91 will be in the state which covers the rotor 10 and the resin sealing member 13 from upper direction in the state which penetrated the rotating shaft 5 to the up-down direction. Further, the seal member 95 disposed in the circular recess 94 of the cover member ceiling portion 91 seals between the rotary shaft 5, the cover member 14, and the second bearing member 16. Further, the cover member cylinder 92 surrounds the output side L1 portion of the resin sealing member 13 from the outer peripheral side. Thereafter, the cover member 14 and the resin sealing member 13 are relatively rotated in the circumferential direction, and as shown in FIG. 1, the engagement protrusion 85 of the resin sealing member 13 and the rotation engagement portion 86 of the cover member 14 Engage.

(Main effects of this embodiment)
As described above, the motor 2 and the pump device 1 of the present embodiment include the connecting wire guide portion 59 that guides the connecting wires 55U, 55V, and 55W that connect the coils 53 of the same phase from the inside in the radial direction. Moreover, the connecting wires 55U, 55V, and 55W include a pushing portion 60 that is pushed from the outside in the radial direction into the gap S1 between the connecting wire guide portions 59 adjacent in the circumferential direction. Therefore, the jumper wires 55U, 55V, and 55W can be prevented from jumping out to the outer peripheral side, so that the risk that the jumper wires 55U, 55V, and 55W come into contact with other members and are damaged can be reduced. In the present embodiment, the movement of the connecting wires 55U, 55V, and 55W in the direction of the one side surface 520b is described by the protruding portion 530 provided on the one side surface 520b of the outer peripheral portion covering portion 52b. , 55W and the outer peripheral part covering part 52b can be secured. Thereby, it becomes easy to push the connecting wires 55U, 55V, 55W inward in the radial direction by the jig. Further, the position of the coil 53 arranged on the radially inner side of the outer peripheral portion covering portion 52b and the pushing portion 60 in the axis L direction can be shifted, and the crossover wires 55U and 55V are moved to the position on the output side L1 with respect to the coil 53. 55W can be arranged. Therefore, the risk of damaging the coil 53 can be reduced when the pushing portion 60 is formed by the jig. Moreover, since it is not necessary to attach another part in order to push in the connecting wires 55U, 55V, and 55W, an increase in the number of parts can be suppressed and an increase in cost can be suppressed.

  The stator core 51 of this embodiment includes a plurality of split cores 500 around which the coil 53 is wound via an insulator 52, and the split cores 500 are arranged in an annular shape. When the stator 11 having such a configuration is manufactured, an operation of winding the coils 53 around the divided cores 500 in a state where the divided cores 500 are linearly arranged is performed. A manufacturing method for forming the stator 11 in which 53 is arranged radially is adopted. In this case, when the split core 500 is formed into a ring shape, a slack is formed in the connecting wires 55U, 55V, and 55W. In this embodiment, this slack is easily pushed inward in the radial direction. Accordingly, it is possible to reduce the possibility that the connecting wires 55U, 55V, 55W jump out to the outer peripheral side and are damaged by contact with other members.

  In this embodiment, the gap S1 that forms the push-in portion 60 is provided between the two crossover guide portions 59 formed in the same outer peripheral portion covering portion 52b. Therefore, since the pushing portion 60 is formed on the output side L1 of the outer peripheral portion covering portion 52b, the pushing portion 60 does not fall into the gap between the adjacent insulators 52 and the crossover wires 55U, 55V, and 55W are not damaged. In addition, since the movement of the pushing portion 60 to the non-output side L2 can be restricted by the outer peripheral portion covering portion 52b, when the resin sealing member 13 is formed, the pushing 60 is performed by the flow of the resin when the resin is injected into the mold. It can suppress that a part shifts in the direction of an axis.

  In the present embodiment, the protruding portions 530 are provided on the radially outer sides of the two crossover guide portions 59 provided on both sides of the gap S1. Therefore, since the crossovers 55U, 55V, and 55W can be supported on both sides in the circumferential direction of the pushing portion 60, the gap D3 between the pushing portion 60 and the outer peripheral portion covering portion 52b is set to be equal to or higher than the height H of the protruding portion 530. Can do.

  The crossover guide part 59 of this form is provided with a convex part 590 that protrudes radially outward. Accordingly, since the crossovers 55U, 55V, and 55W can be guided at the radially outer positions by the convex portions 590, the looseness of the crossovers 55U, 55V, and 55W can be reduced. Therefore, since the amount of pushing in the crossover wires 55U, 55V, 55W inward in the radial direction can be reduced, the possibility of damaging the coil 53 when forming the pushing portion 60 with a jig can be reduced.

In the crossover guide portion 59 of this embodiment, the distal end 591 on the radially outer side of the convex portion 590 is located on the gap S1 side (that is, on the push-in portion 60 side) from the circumferential center of the crossover guide portion 59. Moreover, the inclined surface 592 which goes to a radial inside as it goes to the clearance gap S1 side from the front-end | tip 591 of the convex part 590 is provided. In such a shape, the crossovers 55U, 55V, and 55W can be pushed in along the inclined surface 592, so that the push-in portion 60 can be easily formed. Further, since the tip 591 of the convex portion 590 is at the above position, the inclination angle of the inclined surface 592 with respect to the circumferential direction (angle θ in FIG. 11) is large. Therefore, the crossover wires 55U, 55V, and 55W can be easily pushed in.

  In this embodiment, the outer peripheral surface of the coil 53 is positioned on the output side L1 (one side in the axis L direction) from the one side surface 520b of the outer peripheral portion covering portion 52b. In this embodiment, the position of the crossover wires 55U, 55V, 55W in the direction of the axis L can be regulated by the protruding portion 530. Therefore, even when the coil 53 is positioned on the output side L1 from the one side surface 520b, the pushing portion 60 is formed. In addition, the risk of damaging the coil 53 can be reduced.

  In this embodiment, the resin sealing member 13 that covers the stator 11 is provided, and the connecting wires 55U, 55V, and 55W can be prevented from being exposed from the resin sealing member 13. Accordingly, it is possible to reduce the possibility that the connecting wires 55U, 55V, 55W come into contact with other members and are damaged.

  In this embodiment, when the resin sealing member 13 that covers the stator 11 is molded, the pressing pin 18 that presses the stator 11 in the axis L direction against the mold is used. Therefore, the resin sealing member 13 is formed with a hole 17 that is an arrangement trace of the pressing pin 18. The hole 17 is a hole that exposes the other side surface 520a of the outer peripheral portion covering portion 52a, which is the surface on the counter-output side L2 of the insulator 52, and the pressing pin 18 causes the stator core 51 to pass through the outer peripheral portion covering portion 52a. Press. In this way, the stator core can be reliably positioned in the mold. Therefore, the positional accuracy of the stator core, the insulator, and the coil with respect to the resin sealing member can be increased. Therefore, the possibility that the crossover wire is exposed from the resin sealing member can be reduced.

  Further, the first wall portion 58 </ b> A and the second wall portion 58 </ b> B that support the common line 55 </ b> A are arranged in an angular range including the angular position of the hole 17. Therefore, since the first wall portion 58A and the second wall portion 58B can prevent the pressing pin 18 and the common wire 55A from interfering with each other, the common wire 55A is sandwiched between the pressing pin 18 and the insulator 52 to cause a disconnection. Can be prevented.

DESCRIPTION OF SYMBOLS 1 ... Pump device, 2 ... Motor, 3 ... Case body, 4 ... Pump chamber, 5 ... Rotating shaft, 6 ... Impeller, 7 ... Inlet, 8 ... Discharge port, 10 ... Rotor, 11 ... Stator, 12 ... Housing, DESCRIPTION OF SYMBOLS 13 ... Resin sealing member, 14 ... Cover member, 15 ... 1st bearing member, 16 ... 2nd bearing member, 17 ... Hole, 18 ... Pushing pin, 20 ... Magnet, 21 ... Holding member, 24 ... E-ring, 30 ... Connector housing, 30a ... Connection opening, 31 ... Connection part, 40 ... Terminal pin, 45 ... First bearing plate, 46 ... Second bearing plate, 51 ... Stator core, 52, 52A, 52B, 52C ... Insulator, 52a, 52b ... outer peripheral cover, 53 ... coil, 53a ... outer peripheral surface, 53U ... U-phase coil, 53V ... V-phase coil, 53W ... W-phase coil, 54 ... connector, 55 ... conducting wire, 55A ... common wire, 55U, 55V, 55 ... crossover, 56 ... annular part, 56a ... counter output side end face, 56b ... output side end face, 57 ... salient pole part, 57a ... inner peripheral side end face, 57b ... output side end face, 58 ... wall part, 58A ... first Wall part, 58B ... 2nd wall part, 58C ... 3rd wall part, 59 ... Crossover guide part, 60 ... Push-in part, 61A ... Groove part, 61B ... Groove part, 65 ... Sealing member bottom part, 65a ... Bearing support part, 65b ... Sealing part, 65c ... Coil sealing part, 65d ... Connection part, 65e ... Tapered surface, 65f ... Circular surface, 66 ... Connector sealing part, 67 ... Sealing member cylinder part, 67a ... Small diameter inner peripheral surface part, 67b ... large diameter inner peripheral surface portion, 68 ... bearing member holding recess, 69 ... notch, 70 ... step surface, 71 ... fixed surface, 73 ... step surface, 81 ... large diameter tube portion, 82 ... small diameter tube portion, 82a ... 1st small diameter cylinder part, 82b ... 2nd small diameter cylinder part, 83 ... Arc-shaped opening part 85: engagement protrusion, 86: rotation engagement portion, 91: cover member ceiling, 92 ... cover member cylinder, 93 ... through hole, 94 ... circular recess, 95 ... seal member, 97 ... bearing member holding cylinder , 500 ... split core, 500V ... V phase split core, 500U ... U phase split core, 500W ... W phase split core, 501 ... arc portion, 520a ... other side surface, 520b ... one side surface, 530 ... projecting portion, 531 ... top End face, 590 ... convex part, 591 ... tip, 592 ... inclined face, 593 ... inclined face, D1 ... gap between split cores, D2 ... gap between adjacent outer peripheral cover parts, D3 ... one side surface of outer peripheral cover part Clearance with connecting wire, L ... axis, L1 ... output side, L2 ... non-output side, Q ... center line, S1 ... clearance in connecting wire guide portion, S2 ... clearance in third wall portion, S3 ... first wall portion And the third wall

Claims (9)

A rotor and a stator disposed on the outer peripheral side of the rotor;
The stator includes a stator core, a plurality of insulators covering the stator core, and a coil wound around the stator core via the insulator,
The insulator includes an outer periphery covering portion that covers a portion of the stator core that is radially outward from the coil.
On one side surface in the axial direction of the outer peripheral cover portion,
A crossover guide section for guiding a crossover that connects the coils of the same phase;
A protruding portion protruding toward the one side on the radially outer side than the crossover guide portion is provided,
The said connecting wire is provided with the pushing part pushed in from the said radial direction outer side to the clearance gap between the said connecting wire guide parts adjacent in the circumferential direction, The motor characterized by the above-mentioned.   The motor according to claim 1, wherein the stator core includes a plurality of divided cores around which the coil is wound via the insulator, and the divided cores are arranged in an annular shape. The gap is provided between the two crossover guide parts formed in the same outer peripheral cover part,
3. The motor according to claim 1, wherein the projecting portion is provided on the radially outer side of each of the two crossover guide portions.   The motor according to any one of claims 1 to 3, wherein the crossover guide portion includes a convex portion protruding outward in the radial direction. The radially outer tip of the convex portion is located closer to the pushing portion than the circumferential center of the crossover guide portion,
5. The motor according to claim 4, wherein the convex portion includes an inclined surface that is directed radially inward from the tip toward the gap.   The motor according to any one of claims 1 to 5, wherein an outer peripheral surface of the coil is positioned on the one side from the one side surface.   The motor according to claim 1, further comprising a resin sealing member that covers the stator. The resin sealing member includes a plurality of holes that are traces of a pressing member that presses the stator core against a mold for molding the resin sealing member,
The motor according to claim 7, wherein the plurality of holes expose the other side surface of the outer peripheral portion covering portion facing the other side in the axial direction to the outside of the resin sealing member. A motor according to any one of claims 1 to 8;
An impeller attached to the rotating shaft of the rotor;
And a pump chamber in which the impeller is disposed.

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