JP2018133885A - Motor and pump unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the possibility of removing a conductor from a terminal pin when connecting the conductor to the terminal pin provided to a connector.SOLUTION: A motor 2 of a pump unit 1 comprises a resin sealing member 13 coating a stator 11. In the stator 11, a connector 54 is provided, which allows an external connector to be attached thereto in a detachable manner. The connector 54 comprises a connector housing 30 and a terminal pin 40. A conductor connection part 42 of the terminal pin 40 has a pull-off preventing form in which a tip part (pull-off preventing 42a) is bent to a liner part 42b. In the conductor connection part 42, a conductor 55 is directly connected without passing through a wiring board. Since the conductor connection part 42 has the pull-off preventing form, the pull-off of the conductor 55 fastened to the conductor connection part 42 is suppressed, and the possibility of the conductor 55 to be removed from the terminal pin 40 is reduced.SELECTED DRAWING: Figure 6

Description

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

  Patent Document 1 discloses a pump device that rotates an impeller by a motor. The motor used for the pump apparatus of patent document 1 is provided with the rotor and the stator arrange | positioned at the outer peripheral side of a rotor, and a stator is covered and sealed by the resin sealing member. The stator includes a stator core, an insulator, and a coil wound around the insulator. The insulator is formed integrally with the connector housing.

Japanese Patent Laid-Open No. 2013-3580

  In the motor of Patent Document 1, a conductive wire connecting a coil and a connector is soldered to a wiring board, and terminal pins are fixed to the wiring board. Thus, when connecting a conducting wire to a connector via a wiring board, a layout space for the wiring board is required and the number of parts increases, which is disadvantageous for downsizing and cost reduction. On the other hand, when the wiring board is omitted by directly connecting the conducting wire to the terminal pin, the conducting wire may come off from the terminal pin, and the conducting wire may come off from the connector.

  In view of the above problems, an object of the present invention is to reduce a possibility that a lead wire is detached from the terminal pin when the lead wire is connected to the terminal pin provided in the connector.

  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, an insulator that covers the stator core, and the insulator. A coil wound around the stator core, and a connector to which the conductive wire of the coil is connected. Each of the plurality of terminal pins provided in the connector includes a conductive wire connecting portion, and a distal end portion of the conductive wire connecting portion is The lead wire has a retaining shape that prevents the lead wire entangled in the lead wire connecting portion from coming off.

  In the motor of the present invention, since the tip end portion of the lead wire connecting portion of the terminal pin provided in the connector has a retaining shape, the lead wire entangled in the lead wire connecting portion is suppressed. Therefore, it is possible to reduce the possibility that the lead wire is detached from the terminal pin. Moreover, since a wiring board is not used for connection between the conducting wire and the terminal pin, the number of parts can be reduced and the connector can be miniaturized.

  In the present invention, it is preferable that a plurality of the conductor connection portions are arranged with a space therebetween, and the connector includes a wall portion arranged between the adjacent conductor connection portions. If it does in this way, it can prevent that the conducting wires connected to the conducting wire connection part adjacent by a wall part contact. Accordingly, it is possible to prevent a short circuit of the conducting wire.

In the present invention, the conductor connecting portion includes a straight portion connected to the tip portion, and the retaining shape is a bent shape in which the tip portion is bent with respect to the straight portion, and the wall portion is adjacent to the tip portion. It is desirable that the height in the direction along the straight line portion is lower than the height to the bending position where the tip end part and the straight line portion are connected. Thus, if the wall portion does not protrude between the tip portions, a soldering iron or the like can be inserted between the tip portions. Therefore, the work of soldering the conducting wire to the conducting wire connecting portion is easy.

  In the present invention, the connector includes a connector housing formed integrally with the insulator, and the insulator includes a core outer surface covering portion that covers the stator core on a radially outer side with respect to the coil. It is desirable that the connector housing is disposed radially outward with respect to the cover portion, and a guide convex portion for guiding the conductive wire is formed on the core outer surface cover portion. If it does in this way, since a conducting wire can be guided by a guide convex part, the lead of a conducting wire can be made easy. In this case, if the guide convex portion is cylindrical, there is little possibility that the coating of the conductive wire is peeled off by contact with the guide convex portion.

  In the present invention, the terminal pin includes the conductive wire connecting portion, a terminal connecting portion press-fitted into the connector housing, and a connecting portion that connects the terminal connecting portion and the conductive wire connecting portion, and the connecting portion includes: It is preferable that a holding groove that extends in a direction intersecting with the press-fitting direction of the terminal connection portion and that holds the coupling portion is formed on the outer surface of the connector housing. If it does in this way, a connection part will be held by a holding slot and rotation of a terminal pin will be controlled. Further, the rotation of the terminal pin is also restricted by the press-fitting of the terminal connecting portion. Therefore, the conducting wire connecting portion can be accurately positioned.

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

  According to the present invention, since the tip end portion of the lead wire connecting portion of the terminal pin provided in the connector has a retaining shape, the lead wire entangled in the lead wire connecting portion is suppressed. Therefore, it is possible to reduce the possibility that the lead wire is detached from the terminal pin. Moreover, since a wiring board is not used for connection between the conducting wire and the terminal pin, the number of parts can be reduced and the connector can be miniaturized.

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, and its partial enlarged view. It is a disassembled perspective view of the motor seen from the output side. It is a disassembled perspective view of the motor seen from the non-output side. It is the perspective view which looked at the stator from the output side. It is the perspective 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 sectional drawing of a connector and an insulator.

  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. 2A is a sectional view of the pump device 1, and FIG. 2B is a partially enlarged view of a region A in FIG. 2A. 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.

  3 is an exploded perspective view of the motor 2 as viewed from the output side L1, and FIG. 4 is an exploded perspective view of the motor as viewed from the non-output side L2. 3 and 4 show a state where the cover member 14 constituting the housing 12 of the motor 2 is removed from the resin sealing member 13. 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 the 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)
5 and 6 are perspective views of the stator 11, and FIG. 5 is a perspective view seen from the output side L1,
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 53 </ b> W are formed by sequentially winding one conductive wire 55 around the three salient pole portions 57. Three conducting wires 55 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 each connected to connector 54 via a conductive wire 55.

  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. As shown in FIGS. 5 to 8, the insulator 52 includes core outer surface covering 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 core outer surface covering portion 52 a partially covers the non-output side end surface 56 a of the annular portion 56 of the stator core 51. On the other hand, the core outer surface covering 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 core outer surface covering portion 52a and is connected to the core outer surface covering portion 52a.

The inner peripheral edges of the core outer surface covering portions 52a and 52b are linear shapes orthogonal to the center line Q (see FIGS. 7 and 8) in the circumferential direction of the insulator 52. 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 have a non-output side L along the inner peripheral edge of the core outer surface covering portion 52a.
A wall portion 58 that is a protruding portion that protrudes in the direction 2 is formed. As shown in FIGS. 5 and 7, each of the nine insulators 52 is formed with a wall portion 59 that is a protruding portion protruding to the output side L1 along the inner peripheral edge of the core outer surface 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. In addition, on the output side L1 of the stator 11, the conductive wire 55 (crossover wires 55U, 55V, 55W) is guided by the wall portion 59.

(Crossover guide section)
As shown in FIGS. 5 and 7, the wall portions 59 of this embodiment are formed at both ends in the circumferential direction of the inner peripheral edge of the core outer surface covering portion 52 b in each of the nine insulators 52. The wall portion 59 has a flat plate shape orthogonal to the circumferential center line Q of the insulator 52 provided with the wall portion 59. That is, each of the nine insulators 52 includes two wall portions 59 that are spaced apart from each other in the circumferential direction, and includes a gap S <b> 1 formed between the two wall portions 59. The two wall 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 and guided around the wall portion 59. 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 wall portions 59 functioning as a crossover guide portion that guides the crossover wires 55U, 55V, and 55W at two locations separated 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 portions 59 (for example, the wall 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 wall portion 59 in the radial direction. And it is guided to the four wall parts 59 provided in the two insulators 52 provided with the V-phase coil 53V and the W-phase coil 53W, and is drawn to the insulator 52 provided with the next U-phase coil 53U. The And it is hung on the wall part 59 (for example, wall 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 is drawn in from the clearance S1 to the U-phase coil 53U side. .

  The connecting portion 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 wall portion 59. As described above, each insulator 52 is provided with two wall portions 59 that are spaced apart in the circumferential direction, and the slack portion of the crossover 55 </ b> U is removed from the gap S <b> 1 between these two wall portions 59. The pushing portion 60 is formed by pushing inward in the radial direction. 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 connecting wires 55V and 55W are drawn out from the gap S1 to the outer peripheral side, hung on the wall portion 59, drawn out radially outward of the wall portion 59, guided by the wall portion 59, and radially outward of the wall portion 59. Is pulled around in the circumferential direction. Further, when passing through the two insulators 52, the pushing portions 60 are formed at two places. And it is hung on the wall 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.

(Common wire guide and conductive 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 lead wires 55 connected to the U-phase coil 53U, the V-phase coil 53V, and the W-phase coil 53W are routed to the connector 54.

  The wall 58 has a different shape according to 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 58C has the same shape as the wall 59 that rises on the output side L1 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 first wall portion 58 </ b> A includes a first common line support portion 62 provided at both ends in the circumferential direction and a second common line support portion 63 provided at the center in the circumferential direction. Is provided. The second common line support part 63 extends in a direction orthogonal to the circumferential center line Q of the insulator 52A, and the first common line support part 62 is connected to both ends thereof so as to form an obtuse angle. That is, 58 A of 1st wall parts are the shapes where the width of the circumferential direction spreads as it goes to radial direction outer side as a whole. Each of the two first common line support portions 62 extends while inclining in the radially inward direction toward the center (center line Q) in the circumferential direction of the insulator 52A. A groove portion 61 </ b> A extending in the axis L direction is formed on the radially outer surface of the second common wire support portion 63. The groove 61A is located at the center in the circumferential direction of the insulator 52A. Further, the groove portion 61 </ b> A extends over the entire range of the second common line support portion 63 in the axis L direction.

  The second wall portion 58B is provided in the insulator 52B adjacent to the connector 54 in the circumferential direction. The second wall portion 58 </ b> B is a conductive wire guide portion that guides the conductive wire 55 routed from the coil 53 to the connector 54. The second wall 58B has a flat plate shape orthogonal to the circumferential center line Q of the insulator 52B, and the edge on one side in the circumferential direction (that is, the connector 54 side) is center line Q more than the edge on the other side. Close to. That is, the second wall portion 58B is not a shape symmetrical in the circumferential direction with respect to the center line Q, but a shape in which an edge on the connector 54 side is cut out. As shown in FIGS. 6 and 8, the conducting wire 55 routed from the coil 53 to the connector 54 is disposed on the radially inner side of the second wall portion 58B, and is routed in the circumferential direction along the second wall portion 58B. Is done. A groove 61B extending in the direction of the axis L is formed on the radially outer surface of the second wall 58B. The groove 61B is located at the center in the circumferential direction of the insulator 52B. Further, the groove 61B extends over the entire range in the axis L direction of the second wall 58B.

  In this embodiment, when the stator 11 is placed in the mold and the resin sealing member 13 is molded, the pressing pin 18 (FIG. 8) is a pressing member that presses the stator 11 in the direction of the axis L and presses it against the end surface of the mold. Reference) is used. The groove 61A has a concave shape for avoiding interference between the pressing pin 18 disposed at the angular position where the first wall 58A is disposed and the first wall 58A. Similarly, the groove 61B has a concave shape for avoiding interference between the pressing pin 18 disposed at the angular position where the second wall 58B is disposed and the second wall 58B.

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. 4) that are the traces of the pressing pins 18. Of the six pressing pins 18, two of the six pressing pins 18 are provided with an insulator 52A provided with a first wall portion 58A.
Of the remaining four are pressed against the center in the circumferential direction of the insulator 52B provided with the second wall 58B, and the remaining two are provided with the third wall 58C. The circumferential center of the insulator 52C is pressed. 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 common line support part 62, a second common line support part 63 connected to the first common line support part 62 is arranged at an angular position (center in the circumferential direction) where the hole 17 is formed. Is done. Thus, by providing the second common wire support portion 63 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.

  As shown in FIG. 8, the common line 55A is drawn to the outer peripheral side from the gap S2 between the insulator 52A provided with the first common line support part 62 and the third wall part 58C provided in the insulator 52C adjacent in the circumferential direction. It is. Then, after being hooked on the third wall 58C located next to the first common wire support 62 and routed toward the first common wire support 62 through the radially outer side of the third wall 58C. The third wall portion 58C and the first common line support portion 62 are pushed into the inner peripheral side through the gap S3. That is, the third wall portion 58C adjacent to the first common line support portion 62 in the circumferential direction functions as a common line guide portion that guides the common line 55A.

  The first common line support portion 62 has a shape that goes inward in the radial direction as it moves away from the third wall portion 58C, in other words, has a shape that goes inward in the radial direction as it goes toward the distal end side of the common wire 55A. 55A is supported from the outside in the radial direction. Therefore, the common line 55A is supported with its tip directed toward the inner peripheral side, and a state is formed in which the common line 55A is unlikely to be detached from the first common line support portion 62. Furthermore, since the second common line support part 63 connected to the first common line support part 62 is arranged on the front end side of the common line 55A, the front end part of the common line 55A does not protrude outward in the radial direction of the stator 11. As supported. 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.

(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 disposed on the outer peripheral side of the insulator 52 and on the counter-output side L2 of the stator core 51, and is connected to the portion of the insulator 52 (core outer surface covering portion 52a) located on the outer peripheral side of the coil 53 via the connection portion 31. ing. The connector housing 30 and the connection part 31 are formed integrally with the insulator 52.

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.

  The connector housing 30 has a substantially rectangular parallelepiped shape that opens to the non-output side L2. That is, the connector housing 30 is formed with a connection opening 30a that opens to the non-output side L2. The connector housing 30 includes a rectangular tubular portion 33 extending in the direction of the axis L, and a bottom portion 32 that closes the end of the tubular portion 33 on the output side L1. The connection opening 30 a is provided at the end of the cylindrical portion 33 on the counter-output side L <b> 2. As shown in FIG. 6, the cylindrical portion 33 includes an inner wall 33a located on the center side of the stator 11 (ie, the insulator 52 side), an outer wall 33b parallel to the inner wall 33a, an inner wall 33a and an outer wall. Side walls 33c and 33d are provided to connect 33b. The internal space of the connector housing 30 is divided into three by partition walls 33e and 33f parallel to the side walls 33c and 33d. One terminal connection portion 41 (see FIG. 2A), which is an end portion of the terminal pin 40, is disposed in each space partitioned by the partition walls 33e and 33f. 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.

  FIG. 9 is a cross-sectional view of the connector 54 and the insulator 52. As shown in FIGS. 5 and 7, the same number of through holes 34 as the terminal pins 40 are formed in the bottom 32. Since three terminal pins 40 are attached to the connector housing 30 of this embodiment, the through holes 34 are formed at three locations. The three through holes 34 are arranged in a row in a direction orthogonal to the center line Q in the circumferential direction of the insulator 52 connected to the connector 54. As shown in FIGS. 5, 7, and 9, a concave portion 35 is formed on the output side L <b> 1 of the bottom portion 32 and is located radially inward (that is, on the insulator 52 side) with respect to the through hole 34. . The recess 35 has a hollow shape that is recessed on the counter-output side L2, and extends in a groove shape along the direction in which the three through holes 34 are arranged. Further, the same number of through holes 36 (see FIG. 9) as the through holes 34 are provided on the output side L1 surface of the connecting portion 31. That is, three sets of through holes 34 and through holes 36 are provided on the surface of the output side L1 of the connector 54. Holding grooves 37 (see FIGS. 5 and 7) that intersect with the recesses 35 are provided between the three sets of the through holes 34 and the through holes 36, respectively. The portion of the terminal pin 40 extending from the through hole 34 to the through hole 36 (a connecting portion 43 described later) is held by the holding groove 37.

  The terminal pin 40 is formed by bending a metal wire having a square cross-sectional shape. The terminal pin 40 may be formed by bending a metal wire having a circular cross section. As shown in FIG. 9, the terminal pin 40 is press-fitted into the connector housing 30 and protrudes toward the connection opening 30 a, and a conductor connecting portion 42 disposed between the connector housing 30 and the insulator 52. And a connecting portion 43 that connects the terminal connecting portion 41 and the conducting wire connecting portion 42. The terminal connection portion 41 and the conductive wire connection portion 42 extend in parallel to the axis L direction. The connecting portion 43 extends in a direction orthogonal to the direction of the axis L, and is connected to the terminal connecting portion 41 and the conducting wire connecting portion 42 at a substantially right angle.

  As shown in FIG. 9, the terminal pin 40 is attached to the connector housing 30 by press-fitting the terminal connecting portion 41 into the through hole 34 in the direction of the axis L and passing the conducting wire connecting portion 42 through the through hole 36. . As described above, the terminal pin 40 is prevented from rotating by holding the connecting portion 43 in the holding groove 37 formed on the outer surface of the connector housing 30. When the terminal pin 40 is assembled to the connector housing 30, the conductor connecting portion 42 is linear as a whole. At the tip of the lead wire connecting portion 42, a retaining portion 42a formed by bending the tip end portion of the lead wire connecting portion 42 radially inward after being assembled to the connector housing 30 is provided. That is, the conducting wire connecting portion 42 is configured by a straight portion 42b and a retaining portion 42a that extend linearly along the inner wall 33a.

  The conducting wire connecting portion 42 is a portion where the conducting wire 55 that connects the coil 53 and the terminal pin 40 is entangled. The conducting wire connecting portion 42 has a retaining shape capable of suppressing the withdrawal of the conducting wire 55 entangled with the conducting wire connecting portion 42. The retaining shape of the present embodiment is a bent shape in which the tip end portion (the retaining portion 42a) of the conductor connecting portion 42 is bent with respect to the portion (the straight portion 42b) connected to the tip portion. The retaining portion 42a is bent so that the tip is directed radially inward. In addition, the bending angle of the retaining portion 42a may not be substantially a right angle. For example, an obtuse angle may be used.

  As shown in FIG. 6, the three conductor connection portions 42 are arranged at regular intervals in the direction orthogonal to the radial direction along the inner wall 33 a of the connector housing 30. The connector housing 30 includes a wall portion 38 that vertically protrudes radially inward from the inner side wall 33a. The wall part 38 is provided in two places used as the intermediate position of the adjacent conducting wire connection part 42. FIG. As shown in FIGS. 8 and 9, the wall portion 38 has a radially inner end edge located radially inward of the straight portion 42b. On the other hand, the end of the wall portion 38 in the direction of the axis L is positioned on the output side L1 from the retaining portion 42a. In other words, the height of the wall portion 38 in the direction along the straight portion 42b is lower than the height to the bending position where the retaining portion 42a that is the tip portion and the straight portion 42b are connected. That is, the wall portion 38 has a width that reaches between the adjacent straight portions 42b and a height that does not reach between the adjacent retaining portions 42a.

  As shown in FIG. 6, the insulator 52 formed integrally with the connector 54 has four cylindrical shapes protruding from the surface on the counter-output side L <b> 2 of the core outer surface covering portion 52 a that covers the outer peripheral surface of the stator core 51. Guide protrusions 39 are provided. The four guide protrusions 39 are arranged at a constant pitch in the circumferential direction. In addition, the position of the guide convex part 39, a space | interval, and the number can be changed suitably. One conducting wire 55 is connected to each of the three conducting wire connecting portions 42. The three conducting wires 55 constituting the U-phase coil 53U, the V-phase coil 53V, and the W-phase coil 53W are guided by the four guide convex portions 39 and led to the conducting wire connecting portion 42. That is, the four guide protrusions 39 guide one of the three conductors 55 from the coil 53 located on the inner peripheral side of the connector housing 30 to the middle conductor connection part 42 of the three. Then, one of the remaining two wires is connected to a conductor connecting portion located at one end in the circumferential direction from the coil 53 located on one circumferential side of the coil 53 located on the inner circumferential side of the connector housing 30. The last wire is guided from the coil 53 located on the other circumferential side of the coil 53 located on the inner circumferential side of the connector housing 30 to the conductor connecting portion 42 located on the other circumferential end. To guide. 6 and 8, the insulator 52 provided on the inner peripheral side of the connector housing 30 is provided with a U-phase coil 53U. However, the arrangement of the three-phase coil 53 is illustrated in FIGS. It may be different from the example.

  The conducting wire 55 is guided by the guide convex portion 39 and routed toward the conducting wire connecting portion 42, and is led along the straight portion 42b to the retaining portion 42a. The conducting wire 55 routed along the straight portion 42b is prevented from being short-circuited by the wall portion 38 disposed between the adjacent straight portions 42b. The conducting wire 55 is entangled with the straight portion 42b or the retaining portion 42a and soldered to the straight portion 42b or the retaining portion 42a. As described above, since the wall portion 38 does not reach the retaining portion 42a, the soldering iron is not obstructed by the wall portion 38 and is brought close to the upper ends of the retaining portion 42a and the straight portion 42b. Is possible.

(Resin sealing member)
As shown in FIGS. 2 to 4, 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 L <b> 2. 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.

  As shown in FIGS. 2A, 4, and 5, the connector sealing portion 66 has a substantially rectangular parallelepiped shape as a whole. The connector sealing portion 66 includes a connector sealing portion bottom portion 66 a that covers the output side L 1 of the connector 54, a connector sealing portion outer peripheral portion 66 b that covers both the radially outer side and the circumferential direction of the connector 54, The connector sealing part inner peripheral part 66c which protrudes from the sealing member bottom part 65 to the counter output side L2 while being located in the peripheral side and covering the counter output side L2 of the connection part 31 is provided. The connector sealing portion bottom 66 a and the connector sealing portion outer peripheral portion 66 b protrude from the sealing member tube portion 67 to the outer peripheral side. The connector sealing portion inner peripheral portion 66 c has a shape that rises one step from the annular surface 65 f of the sealing member bottom portion 65. That is, the end surface 66d on the counter-output side L2 of the inner peripheral portion 66c of the connector sealing portion is located at a position protruding from the annular surface 65f of the bottom portion 65 of the sealing member 65 toward the counter-output side L2.

  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 projects from the connector sealing portion 66 to the non-output side L2 and is exposed to the outside. The connection opening 30a is provided at a position protruding from the end surface 66d on the counter-output side L2 of the connector sealing portion 66 by a dimension H (see FIG. 4). In the connector 54, only the end portion of the connector housing 30 where the connection opening 30 a is opened is exposed to the outside, and the connecting portion 43 of the terminal pin 40 and the conductive wire connecting portion 42 are completely covered by the connector sealing portion 66. Therefore, the connector sealing portion 66 prevents the terminal pin 40 from coming off and protects the terminal pin 40 from the 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 FIGS. 2 and 3, the sealing member tube portion 67 includes a large diameter tube portion 81 connected to the sealing member bottom portion 65 and a small diameter tube portion 82 having a smaller outer diameter than the large diameter tube portion 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.

On the outer peripheral surface of the sealing member cylinder portion 67, a resin sealing member side position regulating surface 70 which is a stepped surface facing the output side L1 is formed at a boundary portion between the second small diameter cylinder portion 82b and the large diameter cylinder portion 81. ing. The resin sealing member side position regulating surface 70 is orthogonal to the axis L direction. As will be described later, the resin sealing member-side position regulating surface 70 is a surface that comes into contact with the cover member 14 in the axis L direction. Moreover, the sealing member cylinder part 67 is equipped with the resin sealing member side fixing surface 71 which is an annular end surface orthogonal to the axis L direction at the end of the output side L1. As will be described later, the resin sealing member side fixing surface 71 faces the cover member 14 with a predetermined gap. The cover member 14 is fixed to the resin sealing member 13 by an adhesive disposed in the gap between the resin sealing member side fixing surface 71 and the cover member 14.

  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 resin sealing member side position restricting surface 70 is positioned on the same plane as the counter-output side end surface 56 a of the annular portion 56 of the stator core 51. For this reason, a plurality of arcuate openings 83 (exposing the outer peripheral edge portion of the counter-output side end surface 56a of the annular portion 56 of the stator core 51 to the output side L1 are formed in the inner peripheral portion of the resin sealing member side position regulating surface 70. 3) is formed.

  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. 2, the small-diameter inner peripheral surface portion 67a is provided with a plurality of openings that expose the inner peripheral side end surfaces 57a of the salient pole portions 57 of the stator core 51 to the inner peripheral side. As shown in FIG. 3, 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 notches 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 57 b (see FIG. 5) of the salient pole portion 57 to the output side of the small diameter inner circumferential surface portion 67 a. 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 as will be described later. 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 57 b of each salient pole portion 57 and a second contact that can contact the output side end surface 56 b 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. 4, 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)
The cover member 14 is made of resin and is fixed to the output side L1 of the resin sealing member 13. 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 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 at 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.

  As shown in FIG. 4, a bearing member holding cylinder portion 97 coaxial with the through hole 93 is provided at the center portion of the surface of the cover member ceiling portion 91 on the non-output side L <b> 2. As shown in FIG. 2A, 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 rotation shaft 5 is disposed, and a flange portion that extends from the end portion of the output side L1 of the cylindrical portion to the outer peripheral side. It is a shape provided. 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.

  As shown in FIG. 4, an annular cover member side fixing surface 72 connected to the inner peripheral surface of the cover member cylindrical portion 92 is formed along the outer peripheral edge of the surface on the counter-output side L2 of the cover member ceiling portion 91. Provided. Further, a circular inner annular rib 99 is provided between the bearing member holding cylinder portion 97 and the cover member side fixing surface 72 on the surface of the cover member ceiling portion 91 on the non-output side L2. The bearing member holding cylinder 97, the cover member side fixing surface 72, and the inner annular rib 99 are coaxial. A plurality of radial ribs 98 and a plurality of first adhesive reservoirs 100 are provided between the inner annular rib 99 and the cover member side fixing surface 72. Further, a plurality of radial ribs 96 are provided between the inner annular rib 99 and the bearing member holding cylinder 97.

  The inner annular rib 99 and the radial ribs 98 and 96 are convex portions protruding to the non-output side L2. The first adhesive reservoir 100 is a recess that is recessed to the output side L1 from the cover member side fixing surface 72 and the radial rib 98. The first adhesive reservoir portion 100 is a concave portion that utilizes the thinned shape of the cover member 14. That is, the first adhesive reservoir portion 100 also serves as the lightening shape of the cover member 14. In addition, a concave portion having a thinned shape is formed between the radial ribs 96 on the inner peripheral side of the inner annular rib 99.

As shown in FIGS. 2A and 4, the inner diameter of the cover member cylindrical portion 92 increases stepwise from the output side L1 toward the counter-output side L2. That is, the inner peripheral surface of the cover member cylindrical portion 92 includes a first small-diameter inner peripheral surface 92a, a second small-diameter inner peripheral surface 92b, and a large-diameter inner peripheral surface 92c in order from the output side L1. A cover member side position restricting surface 73 that is an annular step surface facing the counter-output side L2 is formed at a boundary portion between the second small diameter inner peripheral surface 92b and the large diameter inner peripheral surface 92c. The cover member side position regulating surface 73 is a plane orthogonal to the axis L.

  The cover member tube portion 92 includes an upper annular tube portion 92d that overlaps the small diameter tube portion 82 of the resin sealing member 13 in the axis L direction and covers the small diameter tube portion 82 of the resin sealing member 13 from the outer peripheral side; A lower annular cylindrical portion 92e is provided on the outer peripheral side of the large diameter cylindrical portion 81 of the resin sealing member 13. The upper annular cylindrical portion 92d is a portion on the output side L1 with respect to the cover member side position regulating surface 73. The lower annular tube portion 92 e is a protruding portion that protrudes further to the opposite output side L <b> 2 than the cover member side position restricting surface 73 and covers the outer peripheral side of the resin sealing member 13. As shown in FIG. 4, the lower annular cylindrical portion 92 e of the cover member cylindrical portion 92 has rotational engagement portions 86 that engage with the engagement protrusions 85 of the resin sealing member 13 at four locations in the circumferential direction. Is provided.

(Cover member positioning structure and fixing structure)
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. When the cover member 14 is put on the resin sealing member 13, the lower end portion of the inner annular rib 99 is fitted into the inner peripheral side of the sealing member cylindrical portion 67 of the resin sealing member 13 as shown in FIG. 2. As a result, the cover member 14 and the resin sealing member 13 are positioned in the radial direction, and the axis L of the rotary shaft 5 and the center axis of the stator 11 coincide.

  The cover member 14 includes a cover member side position restricting surface 73 provided on the cover member cylinder portion 92 and a resin sealing member side position restricting surface 70 which is a step surface provided on the outer peripheral surface of the resin sealing member 13. By abutting in the axis L direction, positioning is performed in the axis L direction. 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 and the cover member 14 and the second bearing member 16. Further, the cover member cylinder portion 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.

  When the cover member 14 is put on the resin sealing member 13, an adhesive is applied to the resin sealing member side fixing surface 71 (see FIG. 3), which is the end surface on the output side L <b> 1 of the sealing member cylindrical portion 67. . As shown in FIG. 2B, when the cover member side position restricting surface 73 and the resin sealing member side position restricting surface 70 are brought into contact with each other in the axis L direction, the resin sealing member side fixing surface 71 becomes the cover member. The side fixing surfaces 72 and the distal end surfaces of the radial ribs 98 are opposed to each other with a predetermined gap. The adhesive is cured with the gap filled. Therefore, the cover member side fixing surface 72 and the distal end surfaces of the radial ribs 98 are fixed to the resin sealing member side fixing surface 71 via the adhesive layer 110.

  The first adhesive reservoir 100 is provided at a position adjacent to the inner peripheral side with respect to the cover member side fixing surface 72. Therefore, excess adhesive that protrudes to the inner peripheral side of the cover member side fixing surface 72 is held in the first adhesive reservoir 100. The cover member 14 includes a second adhesive reservoir 101 provided between the cover member side fixing surface 72 and the cover member side position regulating surface 73. Therefore, excess adhesive that protrudes from the cover member-side fixing surface 72 to the outer peripheral side is held in the second adhesive reservoir 101.

(Main effects of this embodiment)
As described above, the motor 2 and the pump device 1 of the present embodiment are provided with the connector 54 to which the external connector can be attached to and detached from the stator 11. Since the tip end portion of the lead wire connecting portion 42 of the terminal pin 40 provided in the connector 54 has a retaining shape, the lead wire 55 entangled with the lead wire connecting portion 42 is prevented from coming off. Therefore, the possibility that the conducting wire 55 is detached from the terminal pin 40 can be reduced. In addition, since no wiring board is used to connect the conductive wire 55 and the terminal pin 40, the number of components can be reduced and the connector 54 can be downsized.

  The connector 54 of this embodiment includes a plurality (three) of terminal pins 40, which are assembled so as to protrude between the connector housing 30 and the insulator 52. As a result, the three conductor connecting portions 42 are arranged with a space therebetween. In the connector 54, the two wall portions 38 that protrude from the connector housing 30 are disposed between the adjacent conductor connection portions 42. Therefore, it can suppress that the conducting wires 55 connected to the conducting wire connection part 42 adjacent by the wall part 38 contact. Therefore, a short circuit of the conducting wire 55 can be suppressed.

  In this embodiment, the conductor connecting portion 42 has a bent shape, and includes a straight portion 42b and a retaining portion 42a that is bent radially inward with respect to the straight portion 42b. And since the wall part 38 arrange | positioned between the adjacent conducting wire connection parts 42 is the height which does not reach the retaining part 42a, a soldering iron etc. can be put between the retaining parts 42a. . Therefore, it is possible to prevent the wall portion 38 from hindering the operation of soldering the lead wire 55 to the lead wire connection portion 42 while the structure can suppress the short circuit of the lead wire 55. The retaining shape does not have to be a bent shape that is bent once, but may be a hooked shape that is bent twice. The bending angle may be an obtuse angle or an acute angle. Alternatively, a curved shape may be used.

  The connector 54 of this embodiment includes a connector housing 30 connected to the core outer surface covering portion 52a of the insulator 52, and the insulator 52 includes a guide convex portion 39 protruding from the core outer surface covering portion 52a. A conductor 55 routed from 53 to the connector 54 can be guided. Therefore, the lead wire 55 can be easily routed. Moreover, since the guide convex part 39 is cylindrical, there is little possibility that the film of the conducting wire 55 is peeled off by contact with the guide convex part 39. Instead of providing the guide convex portion 39, a guide groove can be provided.

  Since the connector 54 of this embodiment is attached to the connector housing 30 by press fitting, the resin is prevented from entering the connector housing 30 from the press-fitting through hole 34 when the connector sealing portion 66 is molded with resin. it can. Therefore, it is possible to prevent the resin from adhering to the terminal connection portions 41 of the terminal pins 40 arranged in the connector housing 30.

  The terminal pin 40 of this embodiment includes a connecting portion 43 that extends in a direction intersecting the press-fitting direction of the terminal connecting portion 41 to the connector housing 30, and the terminal pin 40 is formed on the outer surface of the connector housing. The connecting portion 43 is assembled to the holding groove 37 in a state where it is held. Since the terminal pin 40 can be prevented from rotating around the terminal connecting portion 41, the terminal pin 40 can be prevented from rotating when the connector sealing portion 66 is formed.

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, 32 ... Bottom part, 33 ... Cylindrical part, 33a ... Inner side wall, 33b ... Outer wall, 33c, 32d ... Side wall, 33e, 33f ... Partition wall, 34 ... Through Hole, 35 ... concave portion, 36 ... through hole, 37 ... holding groove, 38 ... wall portion, 39 ... guide convex portion, 40 ... terminal pin, 41 ... terminal connecting portion, 42 ... conductor connecting portion, 42a ... retaining portion, 42b ... straight line part,
DESCRIPTION OF SYMBOLS 43 ... Connection part, 45 ... 1st bearing plate, 46 ... 2nd bearing plate, 51 ... Stator core, 52, 52A, 52B, 52C ... Insulator, 52a, 52b ... Core outer surface covering part, 53 ... Coil, 53U ... U Phase coil, 53V ... V phase coil, 53W ... W phase coil, 54 ... connector, 55 ... conductor, 55A ... common wire, 55U, 55V, 55W ... crossover, 56 ... annular part, 56a ... non-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 ... second wall part, 58C ... third wall part, 59 ... Wall portion, 60 ... Push-in portion, 61A ... Groove portion, 61B ... Groove portion, 62 ... First common wire support portion, 63 ... Second common wire support portion, 65 ... Sealing member bottom portion, 65a ... Bearing support portion, 65b ... Sealed part, 65c ... Coil sealing 65d ... connection portion, 65e ... tapered surface, 65f ... annular surface, 66 ... connector sealing portion, 66a ... connector sealing portion bottom, 66b ... connector sealing portion outer peripheral portion, 66c ... connector sealing portion inner peripheral portion, 66d ... End face, 67 ... Sealing member cylinder part, 67a ... Small diameter inner peripheral surface part, 67b ... Large diameter inner peripheral surface part, 68 ... Bearing member holding recess, 69 ... Notch part, 70 ... Resin sealing member side position regulation 71, resin sealing member side fixing surface, 72 ... cover member side fixing surface, 73 ... cover member side position regulating surface, 81 ... large diameter cylindrical portion, 82 ... small diameter cylindrical portion, 82a ... first small diameter cylindrical portion, 82b ... second small-diameter cylindrical portion, 83 ... arc-shaped opening, 85 ... engaging projection, 86 ... rotating engaging portion, 91 ... cover member ceiling, 92 ... cover member cylindrical portion, 92a ... first small-diameter inner circumference Surface, 92b ... second small diameter inner peripheral surface, 92c ... large diameter inner peripheral surface, 92d ... Side annular cylinder part, 92e ... Lower annular cylinder part, 93 ... Through hole, 94 ... Circular recess, 95 ... Seal member, 96 ... Radial rib, 97 ... Bearing member holding cylinder, 98 ... Radial rib, 99 ... Inner annular rib, 100 ... first adhesive reservoir, 101 ... second adhesive reservoir, 110 ... adhesive layer, L ... axis, L1 ... output side, L2 ... non-output side, Q ... center line, S1, S2, S3 ... Gap

Claims (7)

A rotor and a stator disposed on the outer peripheral side of the rotor;
The stator includes a stator core, an insulator that covers the stator core, a coil that is wound around the stator core via the insulator, and a connector to which a conductive wire of the coil is connected.
Each of the plurality of terminal pins provided in the connector includes a conductor connecting portion,
The motor according to claim 1, wherein a leading end portion of the conducting wire connecting portion has a retaining shape that prevents the conducting wire entangled with the conducting wire connecting portion from coming off. A plurality of the conductive wire connecting portions are spaced apart from each other;
The motor according to claim 1, wherein the connector includes a wall portion disposed between the adjacent conductor connection portions. The conductor connecting portion includes a straight portion connected to the tip portion,
The retaining shape is a bent shape in which the tip portion is bent with respect to the straight portion,
The wall portion is disposed between the adjacent straight portions, and a height in a direction along the straight portion is lower than a height to a bending position where the tip portion and the straight portion are connected. The motor according to claim 2. The connector includes a connector housing formed integrally with the insulator,
The insulator includes a core outer surface covering portion that covers the stator core radially outward with respect to the coil, and the connector housing is disposed radially outward with respect to the core outer surface covering portion,
4. The motor according to claim 1, wherein a guide convex portion that guides the conductive wire is formed on the core outer surface covering portion. 5.   The motor according to claim 4, wherein the guide protrusion is cylindrical. The terminal pin includes the conductive wire connecting portion, a terminal connecting portion that is press-fitted into the connector housing, and a connecting portion that connects the terminal connecting portion and the conductive wire connecting portion.
The connecting portion extends in a direction intersecting the press-fitting direction of the terminal connecting portion,
The motor according to claim 4 or 5, wherein a holding groove for holding the connecting portion is formed on an outer surface of the connector housing. A motor according to any one of claims 1 to 6;
An impeller attached to the rotating shaft of the rotor;
And a pump chamber in which the impeller is disposed.

Images