JP2019161894A - motor - Google Patents

Abstract

To provide a technique which allows for appropriate routing of a coil wire pulled out from a stator.SOLUTION: A motor has a rotor 1 rotating around a medial axis extending vertically, a stator 2 placed oppositely to the rotor in the radial direction, and an insulation member 3 placed at an upper side of the stator. The stator includes a stator core having multiple teeth arranged in a hoop direction, multiple coils constituted by winding a conductor around the multiple teeth, respectively, and a coil wire 22 led out from the coil. The insulation member has a body part 30 covering at least a part of the upper part of the stator, a lead-out part 31 having a portion projecting upward from a top face of the body part, and an open hole 32 penetrating the lead-out part. A pin 8 extending upward from the top face of the insulation member is placed in the insulation member. The coil wire partially passes through the open hole, and a tip thereof is entangled.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a motor.

  Japanese Patent Application Laid-Open No. 11-275793 discloses a technique related to a connection structure between a lead wire terminal of a stator and a lead wire connected to the outside. In an electric motor that uses a lead wire and molds a stator connected to the outside, the object is to reduce the cost of direct materials by eliminating the substrate.

  An electric motor disclosed in Japanese Patent Application Laid-Open No. 11-275793 includes a stator of an electric motor having a stator insulating portion at each end having a stator lead terminal, lead wires connected to an external power source, etc., and a stator A lead connecting means provided in the insulating portion and connected to the lead terminal of the stator and the lead wire, a lead wire positioning means assembled to the stator of the electric motor for positioning the lead wire, and for passing the lead connecting means A lead fixing plate having a lead connecting means mounting opening, and lead wire fixing means for fixing the lead wire to the lead fixing plate.

JP 11-275793 A

  In Japanese Patent Application Laid-Open No. 11-275793, pins are exemplified as lead connecting means for connecting the lead terminals of the stator and the lead wires. The said pin is provided in the stator insulation part formed in the edge part of a stator. In such a configuration, for example, it is difficult to make the stator insulating portion thin in order to secure a wall thickness for attaching the pin.

  An object of this invention is to provide the technique which can perform appropriately the coil wire withdraw | derived from the stator.

  An exemplary motor of the present invention includes a rotor that rotates about a central axis that extends vertically, a stator that is disposed to face the rotor in a radial direction, and an insulating member that is disposed on an upper side of the stator. Have. The stator includes a stator core having a plurality of teeth arranged in a circumferential direction, a plurality of coils configured by winding a conductive wire around each of the plurality of teeth, and a coil wire drawn from the coils. The insulating member includes a main body portion that covers at least a part of the upper portion of the stator, a drawer portion that has a portion that protrudes upward from the upper surface of the main body portion, and a through hole that penetrates the drawer portion. . A pin extending upward from the upper surface of the insulating member is disposed on the insulating member. A part of the coil wire passes through the through hole, and a tip part is entangled with the pin.

  The present invention provides a technique capable of appropriately performing the coil wire drawn from the stator.

FIG. 1 is a perspective view of a motor according to an embodiment of the present invention. FIG. 2 is a vertical sectional view of the motor according to the embodiment of the present invention. FIG. 3 is a perspective view of the motor with the casing removed. FIG. 4 is a perspective view of the insulating member. FIG. 5 is a plan view of the insulating member as viewed from below. FIG. 6 is an enlarged cross-sectional perspective view showing the drawer portion and its periphery. FIG. 7 is an enlarged plan view of the through hole and its periphery as seen from above. FIG. 8 is an enlarged perspective view showing the wiring portion and its periphery.

  Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the drawings. In this specification, the direction parallel to the central axis C of the motor 100 shown in FIG. 2 is “axial direction”, the direction orthogonal to the central axis C is “radial direction”, and the direction along the arc centered on the central axis C is defined. These are referred to as “circumferential directions”, respectively. Further, in this specification, the shape and positional relationship of each part will be described with the axial direction as the vertical direction and the insulating member 3 as the upper side with respect to the stator 2. However, this definition of the vertical direction is not intended to limit the orientation of the motor 100 according to the present invention in use.

<1. General configuration of motor>
FIG. 1 is a perspective view of a motor 100 according to an embodiment of the present invention. FIG. 2 is a vertical sectional view of the motor 100 according to the embodiment of the present invention. The motor 100 includes a rotor 1, a stator 2, and an insulating member 3. The motor 100 further includes a bearing portion 4, a bearing housing 5, and a casing 6. The motor 100 may have a circuit board or may not have a circuit board.

  The rotor 1 rotates around a central axis C that extends vertically. The rotor 1 includes a shaft 10, a rotor holder 11, and a magnet 12. The shaft 10 is centered on a central axis C extending vertically. The shaft 10 is a columnar member made of metal, for example. However, the shaft 10 may have a different shape such as a cylindrical shape. The shaft 10 may be made of a material other than metal.

  The rotor holder 11 has a rotor cylinder part 11a and a rotor bottom part 11b. The rotor cylinder portion 11a and the rotor bottom portion 11b are formed of a single metal member. The rotor cylinder portion 11a has a cylindrical shape extending in the vertical direction about the central axis C. The rotor bottom part 11b is located at the lower end part of the rotor cylinder part 11a and has an annular shape centering on the central axis C. That is, a circular opening 111 is provided on the lower surface of the rotor holder 11. The lower end portion of the shaft 10 is inserted into the opening 111, and the rotor holder 11 is fixed to the shaft 10. That is, the rotor holder 11 and the shaft 10 rotate together.

  The magnet 12 is fixed to the inner peripheral surface of the rotor holder 11. Specifically, the magnet 12 is fixed to the inner peripheral surface of the rotor cylinder portion 11a by, for example, adhesion or press fitting. In the present embodiment, the magnet 12 has an annular shape centered on the central axis C. However, the magnet 12 may be composed of a plurality of magnet pieces arranged at intervals in the circumferential direction.

  The stator 2 is disposed to face the rotor 1 in the radial direction. The stator 2 is an armature that generates a magnetic flux according to a drive current. The stator 2 has an annular shape centered on the central axis C. In the present embodiment, the stator 2 is located inside the magnet 12 in the radial direction. The motor 100 of the present embodiment is a so-called outer rotor type motor. However, the motor 100 may be a so-called inner rotor type motor in which the rotor is disposed on the radially inner side of the stator.

  The stator 2 has a stator core 20, a plurality of coils 21, and a coil wire 22. In FIG. 2, the coil wire 22 is omitted, and the coil wire 22 is described in FIG. The stator 2 further includes an insulator 23.

  The stator core 20 is a magnetic material. The stator core 20 is configured by stacking electromagnetic steel plates, for example. Stator core 20 has a plurality of teeth 20a. The stator core 20 further includes a core back 20b. The core back 20b has an annular shape centered on the central axis C. Each of the plurality of teeth 20a protrudes radially outward from the core back 20b. The plurality of teeth 20a are arranged in the circumferential direction. In the present embodiment, the plurality of teeth 20a are arranged at equal intervals in the circumferential direction. The end face on the radially outer side of each tooth 20 a faces the end face on the radially inner side of the magnet 12.

  The plurality of coils 21 are configured by winding a conductive wire around each of the plurality of teeth 20a. Specifically, an insulator 23 that covers at least a part of the stator core 20 is interposed between the coil 21 and the teeth 20a. The insulator 23 is an insulator made of, for example, resin.

  The coil wire 22 is drawn from the coil 21. Specifically, the coil wire 22 is a conducting wire drawn from the coil 21 in order to electrically connect the lead wire 7 drawn to the outside of the motor 100 and the plurality of coils 21. The lead wire 7 is connected to an external power source (not shown). In the present embodiment, the motor 100 is a three-phase motor, and the number of coil wires 22 and lead wires 7 is three. However, the number of coil wires 22 and lead wires 7 is not limited to three, and may be other numbers. The motor 100 is not limited to a three-phase motor, and may be a single-phase motor, for example.

  The insulating member 3 is disposed on the upper side of the stator 2. The insulating member 3 is a structure provided to connect the coil wire 22 and the lead wire 7. The insulating member 3 should just have insulation, The material is not specifically limited. The insulating member 3 is made of, for example, resin. Details of the insulating member 3 will be described later.

  The bearing part 4 supports the shaft 10 rotatably. In the present embodiment, the bearing portion 4 includes an upper bearing 40 and a lower bearing 41. The upper bearing 40 and the lower bearing 41 are disposed with an interval in the axial direction. Both the upper bearing 40 and the lower bearing 41 are ball bearings. The number of bearings constituting the bearing portion 4 is not limited to two, and may be one or three or more. The type of bearing constituting the bearing portion 4 is not limited to a ball bearing, but may be other types of bearings such as a sleeve bearing.

  The bearing housing 5 holds the bearing portion 4. In the present embodiment, the bearing housing 5 holds the upper bearing 40 and the lower bearing 41. The bearing housing 5 has a cylindrical shape with the central axis C as the center and extending in the vertical direction. The bearing housing 5 is disposed on the radially inner side of the stator 2 and is fixed to the stator 2. The bearing housing 5 is fixed to the stator core 20 by press-fitting, for example. The bearing housing 5 includes a first cylinder part 50 and a second cylinder part 51. The first cylinder part 50 is located above the second cylinder part 51 and has a larger diameter than the second cylinder part 51. The first cylinder portion 50 holds the upper bearing 40. The second cylinder portion 51 holds the lower bearing 41.

  The casing 6 houses the rotor 1, the stator 2, the insulating member 3, the bearing portion 4, and the bearing housing 5. The casing 6 is made of, for example, metal or resin. In the present embodiment, the casing 6 includes an upper casing 60 and a lower casing 61. The upper casing 60 is annular. The upper portion of the shaft 10 protrudes above the upper casing 60 through a central opening 601 that penetrates the upper casing 60 vertically. The bearing housing 5 is fixed to the upper casing 60.

  The lower casing 61 has a bottomed cylindrical shape. The side wall of the lower casing 61 surrounds the outer periphery of the rotor 1. The lower casing 61 has a flange portion 611 protruding outward in the radial direction at the upper end portion. The lower surface of the upper casing 60 is in contact with the upper surface of the flange portion 611, and the lower casing 61 is fixed to the upper casing 60. A casing opening 612 is provided on the side wall of the lower casing 61. The lead wire 7 is drawn out of the motor 100 through the casing opening 612.

  By supplying a drive current to the stator 2, rotational torque is generated between the magnet 12 and the stator 2. Thereby, the rotor 1 having the shaft 10 rotates with respect to the stator 2. For example, by attaching a rotating blade to the upper end of the shaft 10, the rotating blade can be rotated about the central axis C.

<2. Detailed configuration of insulating member>
FIG. 3 is a perspective view of the motor 100 with the casing 6 removed. FIG. 4 is a perspective view of the insulating member 3. FIG. 5 is a plan view of the insulating member 3 as viewed from below. As shown in FIGS. 3 to 5, the insulating member 3 includes a main body portion 30, a drawing portion 31, a through hole 32, a wiring portion 33, and a holding portion 34.

  The main body 30 covers at least a part of the upper portion of the stator 2. In the present embodiment, the main body 30 is an annular plate-like member centered on the central axis C. The main body 30 has a main body opening 301 penetrating vertically in the center. A part of the shaft 10 and the bearing housing 5 passes through the main body opening 301.

  The main body 30 has a fixing hole 302 that penetrates in the vertical direction around the main body opening 301. In the present embodiment, the number of fixing holes 302 is plural. Specifically, the number of the fixing holes 302 is three. However, the number of fixing holes 302 may be single. The plurality of fixing holes 302 are arranged at equal intervals in the circumferential direction.

  The insulator 23 has a fixing protrusion (not shown) extending upward from the upper surface. The number of fixing protrusions is the same as the number of fixing holes 302. In the present embodiment, the number of fixing protrusions is three. The insulating member 3 is fixed to the insulator 23 by inserting a fixing protrusion into the fixing hole 302. The fixing method using the fixing hole 302 and the fixing protrusion may be a so-called snap fit.

  In the present embodiment, the upper surface of the radially inner end of the main body portion 30 faces the lower surface of the first tube portion 50. The lower surface of the radially inner end of the main body 30 faces the upper surface of the insulator 23. By fixing the radially inner end of the main body 30 to the first tube 50 and the insulator 23, the insulating member 3 can be firmly fixed.

  The main body 30 has a notch 303 that is recessed from the inner peripheral surface toward the radially outer side. The notch 303 is fitted with a positioning protrusion 52 that protrudes radially outward from the outer peripheral surface of the bearing housing 5. Thereby, the circumferential positioning of the insulating member 3 can be performed with respect to the bearing housing 5.

  The main body 30 has a plurality of annular first ribs 304 centered on the central axis C on the upper surface. The main body 30 has a plurality of second ribs 305 extending radially about the central axis C on the upper surface. By providing the first rib 304 and the second rib 305, the strength of the main body 30 can be increased. By providing the first rib 304 and the second rib 305, it is possible to suppress deformation of the insulating member 3 during molding. However, the first rib 304 and the second rib 305 may not be provided.

  The lead portion 31 is provided to pull out the tip end portion of the coil wire 22 to a specific location on the upper side of the insulating member 3. The lead portion 31 has a portion protruding upward from the upper surface of the main body portion 30. In the present embodiment, the vertical cross-sectional shape of the protruding portion is substantially trapezoidal. The lead portions 31 are provided corresponding to the number of coil wires 22. Specifically, the number of lead-out portions 31 is the same as the number of coil wires 22. In the present embodiment, since the number of coil wires 22 is three, the number of lead-out portions 31 is also three. The three lead portions 31 are arranged in the circumferential direction. Adjacent drawers 31 are adjacent. By arranging the lead portions 31 adjacent to each other, the circumferential width of the wiring portion 33 can be reduced. However, the adjacent drawer | drawing-out parts 31 may be arrange | positioned at intervals in the circumferential direction.

  The through hole 32 penetrates the lead portion 31. In the present embodiment, the through hole 32 penetrates the lead portion 31 in the up-down direction. According to this, the structure of the mold used when molding the insulating member 3 can be simplified. However, the through-hole 32 may be bent in an L shape from the lower surface of the lead-out portion 31, for example, and pass through the lead-out portion 31. Even with such a configuration, the coil wire 22 can be pulled out to a specific location.

  The insulating member 3 is provided with pins 8 extending upward from the upper surface of the insulating member 3. In the present embodiment, the pin 8 is disposed on the wiring portion 33. The pin 8 is a separate member from the insulating member 3. The pin 8 is a conductive member and is made of, for example, metal. In this embodiment, the pin 8 is columnar. For example, the pin 8 is prismatic or cylindrical. However, the shape of the pin 8 may be changed as appropriate. The pin 8 is fixed to the insulating member 3 by press fitting or adhesion, for example.

  In the present embodiment, the pin 8 is located radially outside the through hole 32. In other words, the pin 8 is located on the outer side in the radial direction than the drawing portion 31. According to this, the pin 8 can be arrange | positioned in the radial direction outer side of the insulating member 3, and the connection with the lead wire 7 and the pin 8 which are pulled out of the motor 100 can be performed easily.

  As shown in FIG. 3, a part of the coil wire 22 passes through the through hole 32, and a tip end portion is entangled with the pin 8. The coil wire 22 and the pin 8 are electrically connected. According to this embodiment, since the coil wire 22 is pulled out to the pin 8 through the insulating member 3, the insulation can be improved. According to the present embodiment, the range in which the coil wire 22 can freely move is reduced by the lead-out portion 31 provided with the through hole 32, and extra force is applied to the coil wire 22 when connecting the coil wire 22 and the lead wire 7. It can suppress adding. According to this embodiment, since the pin 8 is provided on the insulating member 3, the thickness of the insulator 23 can be reduced.

  FIG. 6 is an enlarged cross-sectional perspective view showing the drawer portion 31 and its periphery. As shown in FIGS. 5 and 6, the lead-out portion 31 has an inner wall 310 by providing the through hole 32. In other words, the lead portion 31 has the inner wall 310 that constitutes the through hole 32. The inner wall 310 has an inclined surface 3101 that narrows the through hole 32 toward the upper side. The inclined surface 3101 may be a flat surface or a curved surface. By providing the inclined surface 3101, when the coil wire 22 is passed upward through the through hole 32, the tip of the coil wire 22 can be easily pulled out along the inclined surface 3101 in a target direction.

  In the present embodiment, the inner wall 310 has an inclined surface 3101 that is inclined radially inward and away from the central axis C as it goes upward. According to this, when the coil wire 22 is passed upward through the through hole 32, the inclined surface 3101 is inclined toward the radially outer side, so that the tip end of the coil wire 22 is radially outer than the through hole 32. It can be easily pulled out toward the pin 8 located in the position.

  The inclined surface 3101 is preferably provided on the entire inner wall 310 from the radially inner lower end to the upper end, but may be provided on a part thereof. The inclination of the inclined surface 3101 may be constant from the lower end to the upper end on the radially inner side of the inner wall 310, but may be changed in the middle. The position where the inclined surface 3101 is provided may be changed according to the direction in which the tip of the coil wire 22 is to be pulled out. For example, when the pin 8 is not provided on the radially outer side of the lead portion 31, the inclined surface 3101 may be provided at a position different from the radially inner side of the inner wall 310 in accordance with the position where the pin 8 is provided.

  As shown in FIG. 6, the inner wall 310 has a curved surface 3102 that is convex toward the inclined surface 3101 side on the side facing the inclined surface 3101 in the radial direction. According to this, since the location where the coil wire 22 drawn out from the through hole 32 is easy to contact is curved, it is possible to suppress an extra force from being applied to the coil wire 22.

  In the present embodiment, since the inclined surface 3101 is provided on the radially inner side of the inner wall 310, the curved surface 3102 is provided on the radially outer side of the inner wall 310. The curved surface 3102 is curved in a direction that swells radially inward. The curved surface 3102 is preferably provided at least on the radially outer side of the inner wall 310. However, the curved surface 3102 may be provided from the lower end to the upper end on the radially outer side of the inner wall 310.

  The coil wire 22 drawn out from the through hole 32 is likely to come into contact with the radially outer portion of the inner wall 310 because the pin 8 is located radially outside the lead portion 31. Since the curved surface 3102 is provided at this contact location, it is possible to suppress an excessive force from being applied to the coil wire 22.

  As shown in FIG. 6, the lead portion 31 further has an opening 311. The opening 311 is connected to the through hole 32. A part of the coil wire 22 is passed through the opening 311. The opening 311 faces the inclined surface 3101 in the radial direction above the upper surface of the main body 30. According to this configuration, the tip end portion of the coil wire 22 passed through the through hole 32 can be easily pulled out to the side facing the inclined surface 3101 by the opening 311.

  In the present embodiment, the opening 311 is configured by cutting out a radially outer wall portion of the drawer portion 31. The opening 311 is located on the radially outer side of the inclined surface 3101. With the opening 311, the tip end portion of the coil wire 22 can be easily pulled out toward the pin 8 located on the radially outer side of the lead-out portion 31.

  FIG. 7 is an enlarged plan view of the through-hole 32 and its periphery viewed from above. As shown in FIG. 7, the through-hole 32 has a radially outer circumferential width W2 smaller than a radially inner circumferential width W1. Specifically, as shown in FIG. 5, in the inner wall 310, the radially inner wall surface having the inclined surface 3101 becomes narrower in the circumferential direction toward the upper side. On the other hand, the radially outer wall surface of the inner wall 310 has a substantially constant circumferential width from the lower end to the upper end. Among the inner walls 310, a pair of wall surfaces facing in the circumferential direction have a circumferential interval that becomes narrower toward the upper side.

  By comprising in this way, when passing the coil wire 22 through the through-hole 32 toward the upper side, the movable range of the coil wire 22 can be suppressed toward the upper side. As a result, the tip end portion of the coil wire 22 can be easily pulled out toward the pin 8 disposed on the upper surface of the insulating member 3.

  For example, as shown in FIG. 4, the wiring portion 33 protrudes radially outward from the main body portion 30. FIG. 8 is an enlarged perspective view showing the wiring portion 33 and its periphery. FIG. 8 shows a state where the pins 8 and the terminals 9 are arranged on the wiring portion 33. As shown in FIGS. 3 and 8, the pin 8 and the terminal 9 are arranged on the upper side of the wiring portion 33. In the present embodiment, since the motor 100 is a three-phase motor, three pins 8 and three terminals 9 are arranged in the wiring portion 33.

  For example, as shown in FIG. 6, a recess 330 into which the pin 8 is inserted is provided on the upper surface of the wiring portion 33. The recess 330 is recessed downward. In the present embodiment, since the three pins 8 are arranged, the number of the recesses 330 is three. The pin 8 is fixed to the recess 330 by press-fitting or adhesion, for example.

  The terminal 9 is connected to one end of the lead wire 7 that electrically connects the external power source and the coil wire 22. The terminal 9 has a conduction hole 90 through which the pin 8 passes. In detail, the terminal 9 is comprised with electroconductive members, such as a metal. The terminal 9 includes a terminal main body portion 91 having a conduction hole 90 and a lead wire holding portion 92 connected to the lead wire 7. In the present embodiment, the terminal body 91 is annular. The conduction hole 90 is located at the center of the terminal body 91. With the center of the conduction hole 90 as a reference, the lead wire holding portion 92 extends from a part of the outer periphery of the terminal main body portion 91 toward the radially outer side. The lead wire holding portion 92 has a cylindrical portion, and the end portion of the lead wire 7 is placed inside the cylindrical portion. Terminal 9 is electrically connected to lead wire 7.

  According to the wiring portion 33 of the present embodiment, the electrical connection between the lead wire 7 and the coil wire 22 can be easily performed. The pin 8 is passed through the conduction hole 90 of the terminal 9 disposed in the wiring portion 33. The distal end portion of the coil wire 22 drawn out from the through hole 32 is entangled with the pin 8. The coil wire 22 and the pin 8 are electrically connected. The pin 8 around which the coil wire 22 is tangled is electrically connected to the terminal 9 by a conductive member (not shown). Thereby, the lead wire 7 and the coil wire 22 are electrically connected. The conducting member may be, for example, solder or a conductive paste.

  The wiring part 33 has a terminal placement part 331. The terminal placement portion 331 is a portion on which the terminal 9 is placed. In the present embodiment, since the three terminals 9 are arranged in the wiring portion 33, the wiring portion 33 has three terminal placement portions 331. The terminal mounting portion 331 makes it clear where to place the terminal 9 when placing the terminal 9 on the wiring portion 33. In the present embodiment, a groove 332 is provided between adjacent terminal placement portions 331, and each terminal placement portion 331 can be clearly recognized by the groove 332. Thereby, the work efficiency of the assembly work of the motor 100 can be improved.

  In the present embodiment, the wiring portion 33 is located on the radially outer side of the drawing portion 31. Specifically, the wiring part 33 is located on the radially outer side of the three lead parts 31. Since the wiring portion 33 where the pin 8 is disposed is near the lead portion 31, the tip end portion of the coil wire 22 drawn from the through hole 32 can be easily entangled with the pin 8.

  The wiring part 33 has at least one pair of guide parts 333. The pair of guide portions 333 protrudes from the upper surface of the wiring portion 33 and positions the lead wire 7 or the terminal 9. In the present embodiment, since the number of terminals 9 and lead wires 7 is three, three pairs of guide portions 333 are provided. One pair of guide portions 333 is provided for each terminal placement portion 331.

  Specifically, the pair of guide portions 333 have a pair of opposed surfaces that face each other. The pair of opposing surfaces are preferably parallel to each other. Thereby, the lead wire 7 or the terminal 9 can be positioned and arranged between a pair of opposing surfaces. In the example shown in FIG. 8, the guide portion 333 and the lead wire holding portion 92 are in contact with each other, and the terminal 9 is positioned by the pair of guide portions 333. However, the lead wire 7 may be positioned by the pair of guide portions 333. According to this embodiment, at least one of the lead wire 7 and the terminal 9 can be disposed along the pair of guide portions 333, and workability for connecting the lead wire 7 can be improved.

  For example, as shown in FIGS. 6 and 8, the wiring portion 33 has a wall surface portion 334. The same number of wall surfaces 334 as the number of terminals 9 are provided. In the present embodiment, the number of wall surface parts 334 is three. The wall surface portion 334 extends upward from the upper surface of the wiring portion 33. Specifically, the wall surface portion 334 extends upward from the placement surface on which the terminal 9 of the terminal placement portion 331 is placed. The wall surface portion 334 faces a part of the outer peripheral surface of the terminal 9 located on the radially outer side of the wall surface portion 334. In the present embodiment, the wall surface portion 334 has an arc shape in accordance with the shape of the terminal main body portion 91. The wall surface portion 334 has an arc shape with the center of the recess 330 as a reference. The wall surface portion 334 may be in contact with the terminal 9 or may be non-contact. By providing the wall surface portion 334, the position of the terminal 9 can be easily determined when the terminal 9 is disposed on the wiring portion 33.

  For example, as shown in FIGS. 6 and 8, the wiring portion 33 has a protrusion 335. The same number of protrusions 335 as the number of terminals 9 are provided. In the present embodiment, the number of protrusions 335 is three. The protruding portion 335 protrudes outward from the wall surface portion 334 in the radial direction. The protruding portion 335 is provided on the entire or a part in the circumferential direction of the arc-shaped wall portion 334 with the center of the recess 330 as a reference. In the present embodiment, the protrusion 335 is provided in a part of the circumferential direction with the center of the recess 330 as a reference. Further, the protruding portion 335 is provided on a part of the wall surface portion 334 in the vertical direction. Specifically, the protrusion 335 is provided on the upper end portion of the wall surface portion 334. The protruding portion 335 can be configured in a rectangular plate shape, for example, but the shape of the protruding portion 335 may be various shapes such as a semicircular plate shape.

  In the terminal 9 arranged in the wiring portion 33, the upper surface of the terminal 9 faces the lower surface of the protruding portion 335. The terminal 9 and the protrusion 335 may be in contact with each other or may be non-contact. It is possible to suppress the terminal 9 from being lifted by the protruding portion 335, and the workability of the connecting work of the lead wire 7 can be improved.

  The holding portion 34 is positioned above the wiring portion 33 on the radially outer end of the wiring portion 33 or on the radially outer side of the wiring portion 33. For example, as shown in FIGS. 5 and 6, in the present embodiment, the holding portion 34 is located on the outer side in the radial direction from the wiring portion 33 and above the wiring portion 33. The lead wire 7 is located between the upper surface of the wiring portion 33 and the lower surface of the holding portion 34 in a plan view from the radial direction. According to this, the plurality of lead wires 7 extending from the external power source toward the wiring portion 33 can be collected in the vicinity of the wiring portion 33 by the holding portion 34.

  In the present embodiment, the holding portion 34 extends from a holding portion wall 336 provided at one end portion in the circumferential direction of the wiring portion 33. The holding part wall 336 protrudes upward from the upper surface of the wiring part 33. However, the holding portion wall 336 is not limited to the wiring portion 33 and may be provided in the main body portion 30. The holding part 34 extends from the radially outer end of the holding part wall 336 to one side in the circumferential direction. In the present embodiment, the holding portion 34 has a curved bar shape. However, the shape of the holding portion 34 may be another shape such as a rod shape that extends straight.

  It is preferable that the holding | maintenance part 34 has the extending | stretching part 341 extended toward the downward direction at the front-end | tip part of the circumferential direction. Thereby, it can suppress that the some lead wire 7 spreads in the circumferential direction.

<3. Notes>
Various technical features disclosed in the present specification can be variously modified without departing from the gist of the technical creation. In addition, a plurality of embodiments and modification examples shown in the present specification may be implemented in combination within a possible range.

  The present invention can be used, for example, in motors provided in home appliances, OA equipment, in-vehicle equipment, and the like.

DESCRIPTION OF SYMBOLS 1 ... Rotor 2 ... Stator 3 ... Insulating member 7 ... Lead wire 8 ... Pin 9 ... Terminal 20 ... Stator core 20a ... Teeth 21 ... Coil 22 ... -Coil wire 30 ... Main body part 31 ... Lead-out part 32 ... Through-hole 33 ... Wiring part 34 ... Holding part 90 ... Conduction hole 100 ... Motor 310 ... Inner wall 311 ... Opening part 333 ... Guide part 334 ... Wall surface part 335 ... Protrusion part 3101 ... Inclined surface 3102 ... Curved surface C ... Center axis

Claims (13)

A rotor that rotates about a central axis extending vertically;
A stator disposed radially opposite the rotor;
An insulating member disposed on the upper side of the stator;
Have
The stator is
A stator core having a plurality of teeth arranged in the circumferential direction;
A plurality of coils configured by winding a conductive wire around each of the plurality of teeth;
A coil wire drawn from the coil;
Have
The insulating member is
A main body covering at least a part of the upper portion of the stator;
A lead-out portion having a portion protruding upward from the upper surface of the main body portion;
A through-hole penetrating the drawer portion;
The insulating member has a pin extending upward from the upper surface of the insulating member,
The coil wire is a motor in which a part of the coil wire passes through the through hole and a tip end portion is entangled with the pin.   The motor according to claim 1, wherein the pin is located radially outside of the through hole. The through hole penetrates the drawer portion in the vertical direction,
The drawer portion has an inner wall that constitutes the through hole,
The motor according to claim 2, wherein the inner wall has an inclined surface that is inclined radially inward in a direction away from the central axis toward the upper side.   The motor according to claim 3, wherein the through-hole has a radially outer circumferential width smaller than a radially inner circumferential width. The through hole penetrates the drawer portion in the vertical direction,
The drawer portion has an inner wall that constitutes the through hole,
The motor according to claim 1, wherein the inner wall has an inclined surface that narrows the through hole toward the upper side.   6. The motor according to claim 3, wherein the inner wall has a curved surface that is convex toward the inclined surface side on a side facing the inclined surface in the radial direction. The lead portion has an opening through which a part of the coil wire is passed and connected to the through hole,
The motor according to any one of claims 3 to 6, wherein the opening portion is opposed to the inclined surface in the radial direction above the upper surface of the main body portion. The insulating member further includes a wiring portion protruding radially outward from the main body portion,
On the upper side of the wiring part,
The pin;
A terminal having a conduction hole connected to one end of a lead wire for electrically connecting an external power source and the coil wire, and passing the pin;
The motor according to claim 1, wherein the motor is disposed.   The motor according to claim 8, wherein the wiring portion is located on a radially outer side of the drawing portion.   The motor according to claim 8 or 9, wherein the wiring portion has at least one pair of guide portions that protrude from the upper surface and that position the lead wire or the terminal. The insulating member further includes a holding portion positioned on the upper side of the wiring portion on the radially outer end of the wiring portion, or on the radially outer side of the wiring portion,
The motor according to any one of claims 8 to 10, wherein the lead wire is positioned between an upper surface of the wiring portion and a lower surface of the holding portion in a plan view from a radial direction. The wiring portion has a wall surface portion extending upward from the upper surface,
The motor according to any one of claims 8 to 11, wherein the wall surface portion opposes a part of an outer peripheral surface of the terminal located on a radially outer side of the wall surface portion. The wiring portion has a protruding portion that protrudes radially outward from the wall surface portion,
The motor according to claim 12, wherein an upper surface of the terminal faces a lower surface of the protruding portion.

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