JPWO2014057745A1 - Electric motor, air conditioner, and electric motor manufacturing method - Google Patents

Abstract

A sensor substrate 13 is mounted on one end of the stator in the axial direction via a substrate pressing component 20 and a sensor circuit 25 is mounted on the inner surface of the stator to detect the position of the rotor on the stator side surface. The board holding component 20 includes a power supply lead guide protrusion 26 penetrating the sensor board 13, and a power supply lead guide on the surface of the sensor board 13 on the stator side. Provided is an electric motor that is guided by a protrusion and is provided with a power supply lead wire 22 that is routed around the sensor circuit 25 so as not to contact the sensor circuit 25.

Description

  The present invention relates to an electric motor, an air conditioner, and a method for manufacturing the electric motor.

  In conventional motors, the board on which electronic components are mounted is assembled to provide a motor stator that prevents moisture from reaching the board so that the board is not exposed to the outside after molding of the stator. An electric motor stator having a substrate holding part that is assembled to a substrate and is pressed by a mold for molding when the electric motor stator is molded is proposed. (For example, refer to Patent Document 1).

  Moreover, in order to provide an ignition coil device for an internal combustion engine that realizes improvement in water resistance at low cost, a semiconductor element that controls the ignition coil, a terminal that is electrically connected to the semiconductor element, A substrate on which the semiconductor element and the terminal are mounted, a case for accommodating the substrate, a surface of the substrate and a surface of the semiconductor element, and a part of the terminal are exposed in the case. The casting resin to be filled, a part of the substrate between the terminal and the semiconductor element, and a position that prevents progress of peeling between the substrate and the casting resin, and filled with the casting resin. There has been proposed an ignition coil device for an internal combustion engine comprising a notch hole (for example, see Patent Document 2).

Japanese Patent No. 4398437 Japanese Patent Application Laid-Open No. 08-121311

  In the conventional motor, when water that has entered from the lead wire lead-out part of the motor reaches the substrate, water accumulates between the power supply lead wire and the substrate, and when the substrate is energized, pattern breakage occurs due to pattern corrosion of the substrate, causing rotation. There is a problem that it is difficult to detect the child position and the electric motor may become inoperable.

  The present invention has been made in view of the above, and even if water that has entered from the lead wire lead-out portion of the electric motor reaches the substrate, it is difficult for water to collect between the power supply lead wire and the substrate, and pattern breakage due to pattern corrosion. An object of the present invention is to provide an electric motor capable of suppressing quality and improving quality, an air conditioner equipped with the electric motor, and a method for manufacturing the electric motor.

  In order to solve the above-described problems and achieve the object, an electric motor according to the present invention is assembled to the stator at an end of the stator in the axial direction and an annular stator wound with windings. A sensor board on which a sensor circuit for detecting the position of the rotor is mounted on the inner peripheral side of the stator is mounted on the surface on the stator side, and the sensor board is mounted on the sensor board on the side opposite to the stator. An electric motor provided with a mold stator in which a substrate pressing part for pressing a surface is integrally molded with a mold resin, wherein the board pressing part includes a power supply lead guide protrusion penetrating the sensor substrate, and the sensor On the surface of the substrate on the stator side, a power supply lead wire that is guided by the power supply lead wire guide protrusion and bypasses the sensor circuit so as not to contact the sensor circuit is wired. Specially To.

  According to the present invention, even when water that has entered the motor reaches the substrate, it is difficult for water to collect between the power supply lead wire and the sensor substrate, pattern breakage due to pattern corrosion is suppressed, and the quality of the motor can be improved. Play.

1 is a cross-sectional view of the electric motor according to Embodiment 1. FIG. FIG. 2 is a perspective view of the stator assembly according to the first embodiment as viewed from the substrate side. FIG. 3 is a perspective view of the stator in the first embodiment. FIG. 4 is a plan view of the sensor substrate on which the power supply leads and the like according to Embodiment 1 are assembled. FIG. 5 is a plan view of the sensor substrate in the first embodiment. FIG. 6 is a perspective view of the board pressing component in the first embodiment. FIG. 7 is a plan view of the sensor substrate on which the power supply lead wires and the like according to the second embodiment are assembled. FIG. 8 is a plan view of the sensor substrate in the second embodiment. FIG. 9 is a flowchart showing a method for manufacturing the electric motor according to the third embodiment. FIG. 10 is a diagram illustrating a configuration of an air conditioner according to the fourth embodiment.

  Hereinafter, embodiments of an electric motor, an air conditioner, and a method for manufacturing the electric motor according to the present invention will be described in detail with reference to the drawings. Note that the present invention is not limited to the embodiments.

Embodiment 1 FIG.
1 is a cross-sectional view of an electric motor according to the present embodiment, FIG. 2 is a perspective view of the stator assembly in the present embodiment as viewed from the sensor substrate side, and FIG. 3 is a perspective view of the stator in the present embodiment. 4 is a plan view of the sensor substrate on which the power supply lead wires and the like according to the present embodiment are assembled, FIG. 5 is a plan view of the sensor substrate according to the present embodiment, and FIG. 6 is a substrate according to the present embodiment. It is a perspective view of a pressing part. Hereinafter, the configuration of the electric motor 1 will be described with reference to FIGS.

  The electric motor 1 includes a mold stator 4, a rotor 5 that is rotatably disposed inside the mold stator 4, and a metal bracket 6 that is attached to one end of the mold stator 4 in the axial direction. The electric motor 1 is, for example, a brushless DC motor having a permanent magnet (not shown) in the rotor 5 and driven by an inverter (not shown).

  The mold stator 4 has an opening at one end in the axial direction (left side in FIG. 1). The rotor 5 is inserted into the mold stator 4 from this opening. A shaft 9 is integrally fixed to the rotor 5 at the axial center. The shaft 9 is supported by a pair of bearings 8. The mold stator 4 includes a stator assembly 2 and a mold resin 7 for molding which covers the stator assembly 2. For the mold resin 7, for example, a thermosetting resin such as an unsaturated polyester resin is used. As will be described later, the stator assembly 2 is assembled with a sensor board on which a power supply lead wire, a sensor lead wire, a board holding component, and the like are assembled, and has a weak structure. Therefore, low-pressure molding is desirable. Therefore, a thermosetting resin such as an unsaturated polyester resin is used for the mold resin 7.

  In the electric motor 1, the rotor 5 in which the bearing 8 is press-fitted into the shaft 9 is inserted through the opening inside the mold stator 4, and the bracket 6 is held by the mold stator 4 and the bracket 6. It is configured to be press-fitted into the mold stator 4.

  Next, the stator assembly 2 will be described (FIG. 2). The stator assembly 2 includes an annular stator 3, a sensor substrate 13 assembled to the stator 3 at one axial end of the stator 3, a sensor substrate 13, and the stator 3 of the sensor substrate 13. And a board pressing component 20 for pressing the opposite surface. The stator 3 is formed by winding a winding 12 on an insulated stator core 11.

  The stator 3 includes an insulating portion 14. The insulating portion 14 is provided with a protrusion 15 and a terminal 16 protruding to the sensor substrate 13 side. The sensor substrate 13 is provided with a terminal joint 18 that is a hole into which the terminal 16 is inserted, and a protrusion insertion hole 17 into which the protrusion 15 is inserted (FIG. 5). When the sensor board 13 is attached to the stator 3, the stator 15 is inserted so that the protrusion 15 and the terminal 16 provided on the stator 3 can be inserted into the protrusion insertion hole 17 and the terminal joint 18 provided on the sensor board 13. 3 and the sensor substrate 13 are positioned.

  A sensor substrate installation surface 19 is provided on the insulating portion 14 at the base end of the protrusion 15. The sensor substrate 13 is assembled so that the sensor substrate 13 contacts the sensor substrate installation surface 19.

  The board pressing component 20 is provided with a protrusion insertion hole 67 into which the protrusion 15 can be inserted. In a state where the sensor substrate 13 and the substrate pressing component 20 are assembled to the stator 3, the protrusion 15 sequentially inserts the protrusion insertion hole 17 of the sensor substrate 13 and the protrusion insertion hole 67 of the substrate pressing component 20 from the protrusion insertion hole 67. The sensor substrate 13 is fixed to the stator 3 by deforming the protruding protrusion 15 by heat fusion or the like.

  The protrusions 21 provided on the board holding component 20 are arranged on both sides of the terminal joint 18 in a state where the board holding component 20 is assembled to the sensor board 13. At the time of molding, pressure is applied to the solder joint between the sensor substrate 13 and the terminal 16 and the solder joint may be peeled off, but the protrusions 21 on both sides of the terminal joint 18 may be pressed by a mold. As a result, the pressure applied to the solder joint can be reduced and the quality can be improved.

  Next, the stator 3 will be described (FIG. 3). The stator 3 is obtained by winding a winding 12 around an insulated stator core 11. The stator core 11 is formed by punching and laminating electromagnetic steel sheets in a strip shape, and is provided with an insulating portion 14. The insulating portion 14 is formed integrally or separately from the stator core 11 with a thermoplastic resin such as PBT (polybutylene terephthalate). A plurality of teeth (not shown) are provided on the stator core 11, and windings 12 are applied to these teeth via an insulating portion 14.

  The insulating portion 14 is provided with a terminal 16 to which power is supplied, a sensor board installation surface 19, and a protrusion 15 extending on the sensor board installation surface 19. The sensor board installation surface 19 is for abutting the sensor board 13 to determine the position of the sensor board 13 in the axial direction. The sensor board 13 and the board holding component 20 are jointly formed by deforming the protrusion 15 by heat welding or the like. It is used when fastening the sensor substrate 13 to the stator 3. By fastening the sensor substrate 13 and the substrate pressing component 20 together, the sensor substrate 13 can be fixed without increasing the number of processes, and the cost can be reduced. The terminal 16 is made of, for example, plated copper, and the winding 12 is connected to the terminal 16 by fusing or the like.

  Next, the sensor substrate 13 to which the substrate holding component 20 and the like are assembled will be described. FIG. 4 shows the sensor substrate 13 on which the substrate pressing component 20, the power supply lead wire 22, the sensor lead wire 23, the lead wire lead-out component 24, and the like are assembled. 4A shows the surface on the opposite side of the stator, and FIG. 4B shows the surface on the stator side. A sensor circuit 25 for detecting the position of the rotor 5, a board-in type connector 38, a sensor lead wire joint 36, and a power supply lead wire 22 are arranged on the surface of the sensor substrate 13 on the stator side. An electronic component 27 is mounted on the sensor circuit 25. The sensor circuit 25 is mounted on the inner peripheral side of the stator 3 on the sensor substrate 13. On the surface of the sensor substrate 13 opposite to the stator, the sensor lead wire 23, the substrate pressing component 20, the power supply lead wire joint portion 35, and the board-in type connector 37 are arranged.

  One end of the power supply lead wire 22 is connected to the power supply lead wire joining portion 35 via the board-in connector 38, penetrates the sensor substrate 13, and protrudes from the surface of the sensor substrate 13 on the stator side. After being guided by the lead wire guide protrusion 26 and routed outside the sensor circuit 25 so as not to contact the sensor circuit 25, the lead wire guide protrusion 26 is connected to the lead wire lead-out component 24. One end of the sensor lead wire 23 is connected to the sensor lead wire joint 36 via a board-in type connector 37, and is extended linearly and connected to the lead wire lead-out component 24. A lead wire lead-out component 24 is assembled to one side of the sensor substrate 13, and the lead wire lead-out component 24 sandwiches and holds the power supply lead wire 22 and the sensor lead wire 23.

  The protrusions 21 of the board holding component 20 are disposed on both sides of the terminal joint 18. Further, the substrate pressing component 20 is provided with a positioning projection 28, and the positioning projection 28 is used for assembling the substrate pressing component 20 to the sensor substrate 13 with high accuracy. Further, the board holding component 20 is provided with a claw 40 as a locking portion, and the claw 40 is used to lock the board holding component 20 to the sensor board 13.

  Next, details of the sensor substrate 13 will be described. FIG. 5 shows the sensor substrate 13 on which the substrate pressing component 20 is not assembled. FIG. 5A shows the surface on the opposite side of the stator, and FIG. 5B shows the surface on the stator side. The sensor substrate 13 has a substantially crescent shape, and a power supply wiring pattern (not shown) is formed on the opposite surface of the stator. A sensor circuit 25 for detecting the position of the rotor 5 is arranged on the stator inner side of the sensor substrate 13 on the surface of the sensor substrate 13 on the stator side. The sensor circuit 25 includes an electronic component 27 and the like that detect the magnetic force of the rotor 5 and a copper wiring pattern (not shown) that electrically connects the electronic component 27. The sensor circuit 25 is disposed on the entire sensor substrate 13 including the wiring pattern. An insulating material (not shown) is applied.

  Further, the sensor board 13 is provided with a protrusion insertion hole 17 into which a protrusion 15 provided on the stator 3 is inserted, a terminal joint 18 into which a terminal 16 provided on the stator 3 is inserted, and a board holding component 20. A plurality of recesses 29 into which the positioning protrusions 28 are fitted, and a plurality of guide protrusion insertion holes 31 into which the power supply lead guide protrusions 26 provided in the board holding component 20 are inserted are provided. Further, the sensor substrate 13 is provided with a power supply lead joint portion 35 and a sensor lead wire joint portion 36, and the power lead 22 is soldered at the power lead lead joint 35 via a board-in connector 38. The sensor lead wire 23 is joined to the substrate 13 by soldering at a sensor lead wire joining portion 36 via a board-in connector 37.

  The power supply lead wire 22 and the sensor lead wire 23 are assembled to one side of the sensor substrate 13 and are routed to the lead wire lead-out component 24 that is exposed from the outer shell when the stator assembly 2 is molded. Is held between. Thus, the lead wires are wired in two stages to the power supply lead wire 22 and the sensor lead wire 23.

  Next, the board pressing component 20 will be described (FIG. 6). The substrate pressing component 20 is formed, for example, by molding a thermoplastic resin such as PBT, and a plurality of protrusions 21 are connected by a thin connecting portion 45. The substrate pressing component 20 has a substantially crescent shape corresponding to the shape of the sensor substrate 13. The board holding component 20 further includes a protrusion insertion hole 67 into which the protrusion 15 of the insulating portion 14 is inserted, a claw 40 to be engaged with the sensor board 13, and a power supply lead guide protrusion 26 that guides the power supply lead 22. And a positioning projection 28 used for positioning the substrate pressing component 20.

  The end surfaces of the protrusions 21 serve as mold pressing portions when the stator assembly 2 is molded. For example, the protrusions 21 are arranged on the sensor substrate 13 where the sensor substrate 13 is easily deformed and on both sides of the terminal joint portion 18 of the sensor substrate 13. In the illustrated example, nine protrusions 21 are provided, for example. The protrusion 21 extends in the direction opposite to the sensor substrate 13.

  In the protrusion insertion hole 67, the protrusion 15 inserted through the protrusion insertion hole 17 of the sensor substrate 13 is inserted, and the sensor substrate 13 is fixed to the stator 3 by thermally welding the protrusion 15. In the illustrated example, for example, three protrusion insertion holes 67 are provided.

  The power supply lead guide protrusion 26 is inserted into the guide protrusion insertion hole 31 of the sensor substrate 13, protrudes from the sensor substrate 13, and serves as a guide when the power supply lead wire 22 is routed. In the illustrated example, for example, two power supply lead guide protrusions 26 are provided. The power supply lead guide protrusion 26 extends in the direction opposite to the protrusion 21.

  The positioning protrusion 28 is a protrusion for assembling the substrate pressing component 20 to the sensor substrate 13 with high accuracy, and is fitted into a concave portion 29 on the outer periphery of the sensor substrate 13 and positioned. The positioning protrusion 28 extends in the direction opposite to the protrusion 21. Since the board holding component 20 is configured by connecting the projections 21 with the thin-walled connecting portion 45, the material cost is minimized and the cost is reduced.

  As shown in FIG. 4, a substrate holding component 20, a power supply lead wire 22, and the like are assembled to the sensor substrate 13. The board holding component 20 is aligned with the opposite surface of the stator 3 of the sensor board 13 so that the positioning protrusion 28 and the power supply lead guide 26 are on the sensor board 13 side. The claw 40 is positioned by the recess 29 and is assembled by engaging the sensor substrate 13 from the inner diameter side to the outer diameter side. Thereby, since the board | substrate holding | suppressing component 20 and the sensor board | substrate 13 are assembled | attached accurately, without using an adhesive agent etc., the improvement of quality and price reduction are aimed at.

  The power supply lead guide protrusion 26 is inserted into the guide protrusion insertion hole 31 of the sensor substrate 13, passes through the sensor substrate 13, and protrudes from the outside of the sensor circuit 25 and from the surface of the sensor substrate 13 on the stator 3 side. . The power supply lead wire 22 bypasses the sensor circuit 25 so that it does not come into contact with the sensor circuit 25 with the power supply lead guide protrusion 26 protruding outside the sensor circuit 25 as a guide. The wiring is routed along the outer edge of the sensor circuit 25, and is joined by soldering to the power supply lead wire joint portion 35 to which the board-in type connector 38 is assembled.

  Thus, since the power supply lead 22 is routed outside the sensor circuit 25 with the power supply lead guide protrusion 26 as a guide, contact between the power supply lead 22 and the sensor circuit 25 can be prevented. .

  Even when the power supply lead 22 is pressed against the mold resin 7 when the stator assembly 2 is molded, the power supply lead 22 is supported by the power supply lead guide protrusion 26, so that the power supply lead 22 is connected to the sensor circuit 25. Contact between the power supply lead 22 and the sensor circuit 25 is prevented without moving to the side.

  As described above, in the present embodiment, the power supply lead wire guide protrusion 26 is provided to prevent contact between the power supply lead wire 22 and the sensor circuit 25, so that water that has entered from the lead wire lead-out component 24 of the electric motor 1 or the like. Even if it reaches the sensor substrate 13, water does not collect between the power supply lead wire 22 and the sensor circuit 25, and corrosion of the wiring pattern can be prevented, so that the quality of the electric motor 1 can be improved.

  In the present embodiment, when the sensor board 13 and the board holding component 20 are assembled to the stator 3, the protrusion insertion hole 67 provided in the board holding part 20 and the protrusion insertion hole 17 provided in the sensor board 13 Since the protrusions 15 provided on the stator 3 are sequentially inserted and fixed in both of the protrusion insertion holes 67 and 17, the fixing can be performed without increasing the number of processes, and the price of the electric motor 1 can be reduced. Figured.

  Further, the protrusion 21 and the claw 40 of the substrate holding component 20 are sandwiched between the molds when the stator assembly 2 is molded, whereby the substrate holding component 20 is fixed to the mold, and the substrate holding component 20 axially Since the sensor substrate 13 fixed to is prevented from being deformed, the quality of the electric motor 1 can be improved.

  In addition, the protrusions 21 provided on the board holding component 20 are arranged on both sides of the terminal joint 18, and the pressure against peeling of the solder joint between the sensor board 13 and the terminal 16 during molding is applied to both sides of the terminal 16. The quality can be improved by reducing the protrusions 21 by pressing them with a mold.

  As described above, according to the present embodiment, by using the sensor substrate 13, the quality and productivity of the electric motor 1 can be improved and the cost can be reduced.

Embodiment 2. FIG.
FIG. 7 is a plan view of the sensor substrate on which the power supply lead wires and the like according to the present embodiment are assembled, and FIG. 8 is a plan view of the sensor substrate according to the present embodiment. FIG. 7 corresponds to FIG. 4 of the first embodiment, where (a) shows a surface on the opposite side of the stator, and (b) shows a surface on the stator side. FIG. 8 corresponds to FIG. 5 of the first embodiment, where (a) shows the surface on the opposite side of the stator, and (b) shows the surface on the stator side. 7 and 8, the same components as those in FIGS. 4 and 5 are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIGS. 7 and 8, the power supply lead wire 22 is connected to the power supply lead wire joining portion 35 through the board-in connector 38 as in the first embodiment, and the stator of the sensor substrate 13. Guided by the power supply lead wire guide protrusion 26 of the board holding component 20 protruding from the side surface, the sensor circuit 25 is detoured so as not to come into contact with the sensor circuit 25, and the sensor circuit 25 extends along the outer edge of the sensor circuit 25. After being routed outside, the lead wire lead-out component 24 is connected.

  However, in the present embodiment, a slit 41 having a predetermined width and a predetermined length is provided outside the sensor circuit 25 of the sensor substrate 13 (on the outer peripheral side of the stator 3 with respect to the sensor circuit 25). The lead wire guide protrusion 26 penetrates the slit 41 provided in the sensor substrate 13 and protrudes from the surface of the sensor substrate 13 on the stator side. Specifically, at both ends of the slit 41, the power supply lead guide protrusion 26 penetrates and protrudes. Therefore, a slit 41 is interposed between the sensor circuit 25 and the power supply lead wire 22, and both are separated by the slit 41. Other configurations of the present embodiment are the same as those of the first embodiment shown in FIGS.

  In addition to the effects of the first embodiment, the present embodiment has the following effects. That is, in this embodiment, since the gap between the sensor circuit 25 and the power supply lead wire 22 is divided by the slit 41, the mold resin 7 flows into the slit 41 at the time of molding, so that the sensor circuit 25 and the power supply lead wire 22 are supplied. A wall of the mold resin 7 is formed between the two. As a result, the water immersion path is limited to the power supply lead wire 22, moisture movement from the power supply lead wire 22 side to the sensor circuit 25 side is further suppressed, and the quality of the electric motor 1 can be further improved.

Embodiment 3 FIG.
FIG. 9 is a flowchart showing a method for manufacturing the electric motor according to the present embodiment. In the present embodiment, a method for manufacturing electric motor 1 according to Embodiment 1 or 2 will be described.

  First, the stator core 11 is provided with the insulating portion 14, and the winding 12 is further provided to manufacture the stator 3 (S1). At the same time, the substrate pressing component 20 is molded (S5). In addition, the sensor substrate 13 is manufactured (S10). The stator 3 has, for example, the configuration shown in FIG. The substrate pressing component 20 has a configuration shown in FIG. 6, for example. The sensor substrate 13 has, for example, the configuration shown in FIG. The sensor substrate may have, for example, the configuration shown in FIG.

  Next, the board holding component 20 is assembled to the sensor board 13 (S11), and the power supply lead 22 is routed and connected to the sensor board 13 (S12). At this time, the power supply lead wire 22 bypasses the sensor circuit 25 so that it does not come into contact with the sensor circuit 25 using the power supply lead guide protrusion 26 protruding outside the sensor circuit 25 on the sensor substrate 13 as a guide. Then, it is routed along the outer edge of the sensor circuit 25 and joined by soldering to the power supply lead wire joint portion 35 to which the board-in type connector 38 is assembled (for example, FIG. 4). The sensor lead wire 23 is also connected to the sensor substrate 13 (for example, FIG. 4). Further, the lead wire lead-out component 24 is assembled to the sensor substrate 13 (S13).

  Next, the sensor substrate 13 to which the substrate pressing component 20 is assembled is assembled to the stator 3 (S20). At this time, the protrusion 15 of the insulating portion 14 is inserted through the protrusion insertion hole 17 of the sensor substrate 13 and the protrusion insertion hole 67 of the substrate pressing component 20. Then, the sensor substrate 13 is fixed by thermally welding the protrusion 15 of the insulating portion 14 (S21). Further, the terminal 16 and the sensor substrate 13 are soldered to complete the stator assembly 2 (S22).

  The stator assembly 2 is set in a mold, and the protrusion 21 and the claw 40 of the substrate pressing component 20 are sandwiched between the molds and resin-molded to manufacture the mold stator 4 (S23). The rotor 5 provided with the shaft 9 and the bearing 8 is inserted into the mold stator 4, and the bracket 6 is press-fitted to complete the electric motor 1 (S24).

  By using the method for manufacturing the electric motor according to the present embodiment, the electric motor 1 according to the first or second embodiment can be manufactured.

Embodiment 4 FIG.
FIG. 10 is a diagram showing a configuration of the air conditioner according to the present embodiment. As shown in FIG. 10, the air conditioner 50 includes an indoor unit 51 and an outdoor unit 52 connected to the indoor unit 51. The indoor unit 51 includes a blower 53. The outdoor unit 52 includes a blower 54. The blowers 53 and 54 are respectively driven by the electric motor 1 described in the first or second embodiment.

  The cost of air conditioners in recent years has been reduced, and it is preferable to use the electric motor 1 according to the first or second embodiment as an electric motor for the blowers 53 and 54 that are main components of the air conditioner 50. By doing in this way, the low-cost and high quality air conditioner 50 can be obtained.

  The present invention is useful as an electric motor, an air conditioner, and a method for manufacturing an electric motor.

DESCRIPTION OF SYMBOLS 1 Electric motor, 2 Stator assembly, 3 Stator, 4 Mold stator, 5 Rotor, 6 Bracket, 7 Mold resin, 8 Bearing, 9 Shaft, 11 Stator core, 12 Winding, 13 Sensor board, 14 Insulation part , 15 Protrusions, 16 terminals, 17 Protrusion insertion holes, 18 Terminal joints, 19 Sensor board mounting surface, 20 Substrate holding parts, 21 Protrusions, 22 Power supply lead wires, 23 Sensor lead wires, 24 Lead wire lead parts, 25 Sensor circuits , 26 Power supply lead guide protrusions, 27 Electronic components, 28 Positioning protrusions, 29 Recesses, 31 Guide protrusion insertion holes, 35 Power supply lead wire joints, 36 Sensor lead wire joints, 37 Board-in type connectors, 38 Board-in type connectors , 40 nails, 41 slits, 45 thin connection part, 50 air conditioner, 51 indoor unit, 52 outdoor , 53 and 54 a blower, 67 protrusion insertion hole.

To solve the above problems and achieve the object, an electric motor according to the present invention, a ring-shaped stator, the assembled stator stator side on the surface at one axial end of said stator wherein the sensor substrate sensor circuit for detecting the position of the rotor on the inner peripheral side is mounted in the stator, the substrate holding part for holding the opposite surface and the stator of the sensor substrate is assembled to the sensor substrate to the And an electric motor provided with a mold stator formed integrally with a mold resin, wherein the board pressing component includes a power supply lead guide protruding through the sensor board, and the stator side of the sensor board. on the surface, is guided to the power lead guide protrusion, said sensor circuit power supply lead wire routed to bypass the sensor circuit so as not to contact with the that is wired.

To solve the above problems and achieve the object, an electric motor according to the present invention includes an annular stator core, on the disposed on one end side in the axial direction of the stator core on the surface of the stator core side a sensor substrate on which the sensor circuit is mounted for detecting the position of the rotor on the inner peripheral side of the stator core, and the substrate holding part and the stator core before Symbol sensor substrate presses the opposite surface, the stator An electric motor including a stator having an iron core, the sensor substrate, and a resin portion covering the substrate pressing component , wherein the substrate pressing component includes two power supply lead guide protrusions penetrating the sensor substrate, On the surface of the sensor board on the side of the stator core , the power supply lead guided by the two power supply lead guides and routed around the sensor circuit so as not to contact the sensor circuit lines are wired, the cell The substrate is provided with a slit that is interposed between the sensor circuit and the power supply lead and penetrates the sensor substrate, and the two power supply lead guide protrusions are inserted into both ends of the slit. The sensor board is penetrated in a state.

Claims (6)

An annular stator having windings wound thereon, and the stator is assembled to the stator at one end in the axial direction of the stator, and the rotor is positioned on the inner peripheral side of the stator on the surface on the stator side. A mold stator in which a sensor board on which a sensor circuit to be detected is mounted and a board holding part that is assembled to the sensor board and presses the surface of the sensor board opposite to the stator are integrally formed with a mold resin. An electric motor with which
The board holding component includes a power supply lead guide protrusion that penetrates the sensor board,
On the surface of the sensor substrate on the stator side, a power supply lead wire that is guided by the power supply lead wire guide protrusion and bypasses the sensor circuit so as not to contact the sensor circuit is wired. An electric motor characterized by that.   2. The electric motor according to claim 1, wherein the power supply lead guide protrusion is inserted into a guide protrusion insertion hole provided in the sensor substrate and penetrates the sensor substrate. The sensor substrate is provided with a slit penetrating the sensor substrate interposed between the sensor circuit and the power supply lead wire,
The electric motor according to claim 1, wherein the power supply lead guide protrusion is inserted through the slit and penetrates the sensor substrate. The substrate holding part is
A plurality of protrusions extending in a direction opposite to the power supply lead guide protrusion;
A thin connector for connecting the plurality of protrusions;
A plurality of protrusion insertion holes into which the protrusions of the insulating portion provided in the stator are inserted;
A plurality of positioning protrusions extending in the same direction as the power supply lead guide protrusion and for assembling the sensor substrate;
A plurality of claws provided on a side opposite to the plurality of protrusions and engaged with the sensor substrate;
The electric motor according to claim 1, comprising:   An air conditioner equipped with the electric motor according to any one of claims 1 to 4. Manufactures an annular stator wound with windings, and also manufactures a sensor board on which a sensor circuit for detecting the position of the rotor is mounted. Molding the part;
Assembling the substrate pressing component on the sensor substrate such that the surface on which the sensor circuit is mounted is opposite to the substrate pressing component and the power supply lead guide protrusion penetrates the sensor substrate; ,
On the surface of the sensor board opposite to the board pressing component, a power supply lead wire guided by the power supply lead wire guide protrusion and bypassing the sensor circuit so as not to contact the sensor circuit. A wiring step;
Assembling the sensor board with the board holding component assembled to the stator, and manufacturing a stator assembly;
Producing the mold stator by molding the stator assembly with mold resin;
Inserting a rotor including a shaft and a bearing into the mold stator and press-fitting a bracket;
The manufacturing method of the electric motor characterized by the above-mentioned.

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