JP2010288361A - Motor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a motor that has a coil wire tangling part in which an end of a coil wire is tangled around a coil bobbin and a connector terminal of a connector part in which a connector housing is attached to a motor case, which are aligned with high accuracy. <P>SOLUTION: The motor 1 has a first coil bobbin 31 for holding a first terminal pin 11 on which an end of a first coil wire 36 is tangled, and a second coil bobbin 32 for holding a second terminal pin 12 on which an end of a second coil wire 37 is tangled, in the motor case 2. A connector housing 90 is provided in the motor case 2 for holding a connector terminal 95 by using a notch 240. A positioning fitting part 323 having a through-hole of the connector housing 90, to be fitted to a recess 99, protrudes in the second coil bobbin 32. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a motor having a structure in which a coil wire wound around a coil bobbin is connected to the outside via a connector portion.

  As a motor in which a coil wire wound around a coil bobbin is connected to the outside via a connector portion, a motor having a structure in which an insulating connector body holding a connector terminal is fixed to a motor case has been proposed (Patent Document 1). reference).

  In the motor described in Patent Document 1, an end portion of a coil wire is connected to a coil wire binding portion including a part of a coil bobbin around which a coil wire is wound or a coil wire binding portion including a terminal pin held on the coil bobbin. After entangled, the structure where the end of the coil wire is entangled with the connector terminal is adopted.

JP 2003-289638 A

  However, in the motor described in Patent Document 1, since the connector main body is only fixed to the motor case, there is a problem that high positional accuracy cannot be obtained between the coil wire binding portion on the coil bobbin side and the connector terminal. is there. For this reason, in the motor described in Patent Document 1, after the end of the coil wire is entangled with the coil wire linking portion on the coil bobbin side, the operation of tying the end of the coil wire to the connector terminal cannot be performed efficiently. There is a problem. In addition, because the position accuracy of the coil bobbin side coil wire binding portion and the connector terminal is low, the end of the coil wire is electrically connected to the terminal pin (coil wire binding portion) held on the coil bobbin, and the terminal There is a problem that it is not possible to employ a structure in which pins and connector terminals are electrically connected by a wiring board.

  In view of the above problems, the object of the present invention is to provide positional accuracy between a coil wire binding portion in which an end portion of a coil wire is wound on the coil bobbin side and a connector terminal of a connector portion in which a connector housing is attached to a motor case. An object of the present invention is to provide a motor capable of improving the motor.

  In order to solve the above-described problem, the present invention includes a stator including a coil bobbin around which a coil wire is wound, a motor case that holds the stator, and a connector portion that supplies power to the coil wire. In the motor, the connector section includes a connector terminal electrically connected to the coil wire, and a connector housing that holds the connector terminal and is held by the motor case, and the coil bobbin has the coil A cylindrical body portion around which a wire is wound, a coil wire binding portion around which an end portion of the coil wire is wound, and the connector housing which is engaged with the connector housing when the connector housing is attached to the motor case And an engaging portion for positioning the housing.

  In this invention, the connector part for supplying electric power with respect to a coil wire is comprised by attaching the connector housing holding a connector terminal to a motor case. In addition, since the coil bobbin is provided with an engaging portion for positioning the connector housing by engaging the connector housing when the connector housing is attached to the motor case, the connector housing is highly accurate with respect to the coil bobbin. Positioned. Therefore, the positional accuracy between the coil wire binding portion where the end portion of the coil wire is bound on the coil bobbin side and the connector terminal of the connector portion is high.

  In this invention, it is preferable that the said engaging part is an engaging convex part which fits into the recessed part of the said connector housing. According to this structure, compared with the case where an engaging part is comprised as an engaging recessed part, the structure of the metal mold | die at the time of manufacturing a coil bobbin by resin molding can be simplified.

  In this invention, it is preferable that the said coil bobbin is provided with the flange part diameter-expanded by the edge part of the said cylindrical trunk | drum, and the said engaging part is provided in the outer peripheral side edge part of the said flange part. According to this configuration, the configuration of the coil bobbin can be simplified even when the engaging portion is configured on the coil bobbin. Moreover, since the engaging part is formed in the flange part of the coil bobbin, even if the engaging part is pushed when the external connector is coupled to the connector part, the coil bobbin is hardly deformed.

  In this invention, the said coil wire binding part is a terminal pin hold | maintained at the said coil bobbin, Comprising: It is preferable that the said terminal pin and the said connector terminal are electrically connected by the wiring board. According to the present invention, since the positional accuracy between the terminal pin provided as the coil wire binding portion on the coil bobbin and the connector terminal of the connector portion is high, even when the terminal pin and the connector terminal are connected by the wiring substrate, the connection of the wiring substrate is possible. Can be easily and reliably performed. Further, the end of the coil wire only needs to be entangled with the terminal pin, and it is not necessary to entangle the end of the coil wire with the connector terminal, so that the productivity of the motor can be improved.

  In the present invention, the wiring board is preferably a rigid board. According to the present invention, since the positional accuracy of the terminal pin provided as the coil wire linking portion on the coil bobbin and the connector terminal of the connector portion is high, the terminal pin and the connector terminal can be connected by the rigid board, and an expensive flexible There is no need to use a wiring board. Therefore, the component cost of the motor can be reduced.

  In this invention, the connector part for supplying electric power with respect to a coil wire is comprised by attaching the connector housing holding a connector terminal to a motor case. Further, since the coil bobbin is formed with an engaging portion that engages with the connector housing when the connector housing is attached to the motor case, the connector housing is positioned with high accuracy on the coil bobbin. Therefore, when the terminal pin is provided on the coil bobbin as the coil wire linking portion, the positional accuracy between the terminal pin and the connector terminal is high, so the structure in which the terminal pin and the connector terminal are connected via the wiring board is easy and reliable. Can be configured. In addition, when a configuration in which the end of the coil wire is entangled with the coil wire linking portion on the coil bobbin side and then the end of the coil wire is entangled with the connector terminal, the tangling work can be performed efficiently it can.

It is explanatory drawing which shows the external appearance of the motor which concerns on embodiment of this invention. It is a disassembled perspective view of the motor which concerns on embodiment of this invention. It is the perspective view which looked at the 1st coil bobbin used for the motor concerning an embodiment of the invention, and the 2nd coil bobbin from the output side. It is the perspective view which looked at the 1st coil bobbin and the 2nd coil bobbin used for the motor concerning an embodiment of the invention from the non-output side. It is explanatory drawing which shows a mode that the routing structure of the coil wire edge part to a terminal pin was seen from the non-output side in the motor which concerns on embodiment of this invention. It is explanatory drawing which shows the method for providing slack to the edge part of the 1st coil wire and the 2nd coil wire in the motor which concerns on embodiment of this invention. It is explanatory drawing which shows the method of comprising a connector part in the motor which concerns on embodiment of this invention.

  A motor to which the present invention is applied and a manufacturing method thereof will be described with reference to the drawings.

[overall structure]
FIG. 1 is an explanatory view showing the appearance of a motor according to an embodiment of the present invention, and FIGS. 1A and 1B each have an output shaft protruding from the motor according to the embodiment of the present invention. It is the perspective view seen from the output side, and the perspective view seen from the opposite output side on the opposite side to the side from which the output shaft protrudes. FIG. 2 is an exploded perspective view of the motor according to the embodiment of the present invention. In FIG. 2, the coil wire is indicated by a one-dot chain line.

  As shown in FIGS. 1 and 2, the motor 1 of the present embodiment is a geared motor using a stepping motor. The motor 1 includes a cylindrical stator 3, a rotor 5, which will be described below, in a space surrounded by a bottomed cylindrical metal motor case 2 and an end plate 61 that closes the opening end of the motor case 2. A main plate 65, a reduction gear train 7 and the like are arranged, and the rotation of the rotor 5 is reduced by the reduction gear train 7 and output from the output shaft 50.

  The stator 3 is wound with a first coil bobbin 31 wound with a first coil wire 36 constituting a first coil for A phase and a second coil wire 37 constituting a second coil for B phase. The second coil bobbin 32 is provided, and the first coil bobbin 31 and the second coil bobbin 32 are arranged adjacent to each other in the motor axis L direction. In this embodiment, the first coil bobbin 31 is disposed on the output side from which the output shaft 50 protrudes in the motor axis L direction, and the second coil bobbin 32 is disposed on the opposite output side in the motor axis L direction. The first coil bobbin 31 is a resin molded product, and includes a cylindrical body portion 310 around which the first coil wire 36 is wound, and a pair of flange portions 311 and 312 that are expanded at both ends of the cylindrical body portion 310. I have. The second coil bobbin 32 is also a resin molded product that is substantially the same as the first coil bobbin 31, and a pair of cylindrical body 320 around which the second coil wire 37 is wound and a diameter that expands at both ends of the cylindrical body 320. The flange portions 321 and 322 are provided.

  In the stator 3, an A-phase outer stator core 41 is disposed so as to overlap the output-side flange portion 311 of the first coil bobbin 31, and for the A-phase so as to overlap the non-output-side flange portion of the first coil bobbin 31. An inner stator core 42 is disposed. Although a part of the illustration is omitted, in the outer stator core 41 and the inner stator core 42, a plurality of pole teeth are bent from the inner peripheral edge of the flange-shaped annular portion toward the motor axis L direction. The pole teeth of the inner stator core 42 are alternately arranged in the circumferential direction along the inner circumferential surface of the first coil bobbin 31. Further, an outer stator core 43 for B phase is disposed so as to overlap the flange portion 321 on the opposite side to the output side of the second coil bobbin 32, and for B phase so as to overlap with the flange portion 322 on the output side of the second coil bobbin 32. An inner stator core 44 is disposed. In the outer stator core 43 and the inner stator core 44 for the B phase as well as the outer stator core 41 and the inner stator core 42 for the A phase, a plurality of pole teeth are bent in the motor axis L direction from the inner peripheral edge of the flange-shaped annular portion. The pole teeth of the outer stator core 43 and the pole teeth of the inner stator core 44 are alternately arranged along the inner circumferential surface of the second coil bobbin 32 in the circumferential direction.

  A rotor 5 is disposed inside the stator 3 having such a configuration. The rotor 5 includes a rotating shaft 51 extending in the direction of the motor axis L, and a rotor magnet 55 fixed to the outer peripheral surface of the rotating shaft 51. The rotating shaft 51 is rotatably supported by a support shaft 511. ing. The outer circumferential surface of the rotor magnet 55 faces the pole teeth arranged on the inner circumferential surface of the stator 3, and the S pole and the N pole are alternately arranged in the circumferential direction on the outer circumferential surface of the rotor magnet 55. A gear 510 is formed on the outer peripheral surface of the output side end of the rotating shaft 51.

  An annular base plate 65 is disposed on the output side end surface of the stator 3, and in the base plate 65, two support plate portions 657 from the positions facing each other across the central hole 650 toward the output side, 658 protrudes. A total of five shaft holes 651, 652, 653, 654, 655 are formed in the main plate 65 around the central hole 650. The central hole 650 is a hole through which the output side end of the rotating shaft 51 of the rotor 5 passes. Protrusions 657a and 658a are formed at the distal ends of the two support plate portions 657 and 658, and the base plate 65 is provided at the distal ends of the support plate portions 657 and 658 using the projections 657a and 658a. The end plate 61 is fixed so as to oppose. The end plate 61 is formed with two protrusions 618 that serve as attachment portions to the motor device from opposite sides.

  The end plate 61 is configured with a bearing 619 that holds the support shaft 511 at a position facing the central hole 650 of the base plate 65, and around the bearing 619, four shaft holes 651, 652, A total of four shaft holes 611, 612, 613, and 614 are formed at positions facing 653 and 654. The opposite end of the support shaft 511 of the rotating shaft 51 is held by a bearing 229 formed at the center of the bottom 22 of the motor case 2.

  In the end plate 61, a circular through hole 615 is formed at a position facing the shaft hole 655 of the base plate 65, and the through hole 615 projects the output side end portion of the output shaft 50. A cylindrical portion 616 that rotatably supports the output shaft 50 is formed around the through hole 615. The shaft holes 651, 652, 653, 654 of the main plate 65 and the shaft holes 611, 612, 613, 614 of the end plate 61 respectively hold both ends of the support shafts 711, 721, 731, 741. , 721, 731 and 741 support the first gear 71, the second gear 72, the third gear 73 and the fourth gear 74 constituting the reduction gear train 7 in a rotatable manner.

  Each of the first gear 71, the second gear 72, the third gear 73, and the fourth gear 74 includes a small-diameter gear portion and a large-diameter gear portion. The gear 510 of the rotating shaft 51 meshes with the large diameter gear portion of the first gear 71, the small diameter gear portion of the first gear 71 meshes with the large diameter gear portion of the second gear 72, and the small diameter gear portion of the second gear 72. Meshes with the large diameter gear portion of the third gear 73, the small diameter gear portion of the third gear 73 meshes with the large diameter gear portion of the fourth gear 74, and the small diameter gear portion of the fourth gear 74 corresponds to the output shaft 50. It meshes with the gear portion 500.

[Configuration of coil bobbin and terminal block]
3 and 4 are a perspective view of the first coil bobbin 31 and the second coil bobbin 32 used in the motor 1 according to the embodiment of the present invention as seen from the output side, and a perspective view as seen from the opposite output side. FIGS. 3A and 4A show a state in which the wiring board 8 is attached to the first coil bobbin 31 and the second coil bobbin 32 arranged in the direction of the motor axis L, and FIG. 3B and FIG. FIG. 4B shows a state before the wiring board 8 is attached after the first coil bobbin 31 and the second coil bobbin 32 are arranged in the motor axis L direction, and FIGS. 3C and 4C show the state. These show a state in which the first coil bobbin 31 and the second coil bobbin 32 are separated in the motor axis L direction.

  FIG. 5 is an explanatory view showing a state in which the coil wire end routing structure to the terminal pin is viewed from the opposite output side in the motor 1 according to the embodiment of the present invention. FIG. FIG. 5B shows a state seen from the other side in the circumferential direction. 3C, FIG. 4C, and FIG. 5, only the ends of the first coil wire 36 and the second coil wire 37 are indicated by a one-dot chain line and a two-dot chain line.

  In the motor 1 shown in FIGS. 1 and 2, when the first coil wire 36 and the second coil wire 37 are energized, the rotor 5 rotates, and the rotation of the rotor 5 is decelerated by the reduction gear train 7 and the output shaft 50. Is output from. Therefore, in the motor 1, it is necessary to supply power to the first coil wire 36 and the second coil wire 37 from the outside.

  In order to perform such power feeding, in the motor 1 of this embodiment, as shown in FIGS. 3, 4, and 5, the first coil bobbin 31 has an output side end in the motor axis L direction of the first coil bobbin 31, A first terminal block 314 is provided that holds the three first terminal pins 11 with the end portions of the first coil wires 36 entangled in parallel with each other in the circumferential direction.

  In this embodiment, as shown in FIG. 4 (c) and FIGS. 5 (a) and 5 (b), as the first coil wire 36, the first coil wire 36 for A phase (indicated by a one-dot chain line) and the first A first A-phase coil wire 36 (indicated by a two-dot chain line) to which a reverse-phase pulse is applied is wound around the first coil bobbin 31. Here, since one end 36a of the A-phase first coil wire 36 and one end 36c of the A-bar phase first coil wire 36 are held at the same potential as a common, a common first terminal It is tied to the pin 11. For this reason, there are a total of four ends of the first coil wire 36, but a total of three first terminal pins 11 are held on the first terminal block 314.

  As can be seen from FIGS. 4A, 5A, and 5B, the first terminal block 314 outputs the outer peripheral end of the flange portion 311 located at the output end of the first coil bobbin 31. The arm portion 315 that is formed of a thick portion protruding toward the side and connects the flange portion 311 and the first terminal block 314 extends from the outer peripheral side end portion of the flange portion 311 of the first coil bobbin 31 toward the output side. The bottom wall portion 316 is provided, and the bottom wall portion 316 includes side wall portions 317 and 318 projecting radially outward from both circumferential end portions (left and right end portions). For this reason, on the radially outer side of the bottom wall portion 316 of the arm portion 315, the portion sandwiched between the sidewall portions 317 and 318 is a recess that is recessed radially inward from the radially outer wall surface of the sidewall portions 317 and 318. ing.

  In the arm portion 315 of the first coil bobbin 31, a taper 316a is formed at a portion where the bottom wall portion 316 and the flange portion 311 are connected to each other at the opposite end portion of the bottom wall portion 316 except for the central portion in the width direction. A small protrusion 319 is formed at the center in the width direction of the portion where the taper 316a is formed so as to divide the taper portion 316a in the left-right direction. When the protrusion 319 forms a taper 316a at a portion where the bottom wall portion 316 and the flange portion 311 are connected to each other at the opposite end portion of the bottom wall portion 316, the taper 316a is not formed at the central portion in the width direction. It is comprised by. Further, tapers 317a and 318a are formed at the opposite edges of the inner surfaces facing each other in the side wall portions 317 and 318 on both sides.

  In the first coil bobbin 31, of the two first coil wires 36, for the A-phase first coil wire 36 indicated by the alternate long and short dash line, for example, the end portion 36 a on the winding start side is connected to the first terminal pin 11. After entanglement, it is hooked on the edge of one side wall part 317 and wound around the cylindrical body part 310. Then, the end portion 36 b on the winding end side of the first coil wire 36 for the A phase is hooked on the protrusion 319, and then drawn to the first terminal pin 11 and entangled with the first terminal pin 11. Therefore, the protrusion 319 functions as a guide part that defines the routing position of the end part 36 b of the first coil wire 36 for the A phase. In addition, for the first coil wire 36 for the A-bar phase indicated by a two-dot chain line, after winding the end portion 36c on the winding start side to the first terminal pin 11, it is hooked on the edge of the other side wall portion 318, The cylindrical body 310 is wound in the direction opposite to the first coil wire 36 for the A phase. Then, the end portion 36 d on the winding end side of the first coil wire 36 for the A bar phase is hooked on the protrusion 319, and then drawn to the first terminal pin 11 and entangled with the first terminal pin 11. Therefore, the protrusion 319 functions as a guide portion that defines the routing position of the end portion 36d of the first coil wire 36 for the A bar phase. The end portions 36a, 36b, 36c, 36d of the first coil wire 36 routed in this way are all entangled with the first terminal pin 11, and then electrically connected to the first terminal pin 11 by soldering. It is connected to the.

  As shown in FIGS. 3, 4, and 5, the second coil bobbin 32 extends from the output side end in the motor axis L direction toward a position adjacent to the first terminal block 314 in the circumferential direction. The arm portion 325 is provided, and at the distal end portion of the arm portion 325, the three second terminal pins 12 having the end portion of the second coil wire 37 are entangled in parallel with each other in the circumferential direction. A second terminal block 324 is configured to be held. Here, when the first coil bobbin 31 and the second coil bobbin 32 are arranged so as to be adjacent to each other in the direction of the motor axis L, the output side end surface 314s of the first terminal block 314 and the output side end surface 324s of the second terminal block 324 are: A planar substrate mounting portion 33 is formed on the same plane, and a wiring substrate 8 to be described later is placed on the planar substrate mounting portion 33 in an overlapping manner. In this state, a total of six first terminal pins 11 and second terminal pins 12 are arranged in parallel in the circumferential direction.

  In this embodiment, as shown in FIG. 4 (c) and FIGS. 5 (a) and 5 (b), as the second coil wire 37, a B-phase second coil wire 37 (shown by an alternate long and short dash line) The second coil bobbin 32 is wound around the second coil wire 37 and a B-bar phase second coil wire 37 (indicated by a two-dot chain line) to which a pulse having an opposite phase is applied. Here, since one end portion 37a of the B-phase second coil wire 37 and one end portion 37c of the B-bar phase second coil wire 37 are held at the same potential as the common, the common second terminal It is entangled with the pin 12. For this reason, there are a total of four ends of the second coil wire 37, but a total of three second terminal pins 12 are held on the second terminal block 324.

  As can be seen from FIGS. 4A, 5A, and 5B, the second terminal block 324 outputs the outer peripheral end of the flange 322 located at the output end of the first coil bobbin 31. The arm portion 325, which has a thick portion protruding toward the side, and connects the flange portion 322 and the second terminal block 324, extends from the outer peripheral side end portion of the flange portion 322 of the second coil bobbin 32 toward the output side. The bottom wall 326 is provided, and the bottom wall 326 includes side wall portions 327 and 328 that protrude radially outward from both ends in the circumferential direction (ends on the left and right sides). For this reason, on the radially outer side of the bottom wall portion 326 of the arm portion 325, the portion sandwiched between the sidewall portions 327 and 328 is a recess that is recessed radially inward from the radially outer wall surface of the sidewall portions 327 and 328. ing.

  In the arm portion 325 of the second coil bobbin 32, a taper 326a is formed at a portion where the bottom wall portion 326 and the flange portion 322 are connected to each other at the opposite end portion of the bottom wall portion 326 except for the central portion in the width direction. A small protrusion 329 is formed at the central portion in the width direction of the portion where the taper 326a is formed so as to divide the taper portion 326a in the left-right direction. The protrusion 329 does not form the taper 326a at the central portion in the width direction when the taper 326a is formed at a portion where the bottom wall portion 326 and the flange portion 322 are connected to each other at the opposite end portion of the bottom wall portion 326. It is comprised by. In addition, tapers 327a and 328a are formed at the opposite edges on the inner surfaces facing each other in the side wall portions 327 and 328 on both sides.

  In the second coil bobbin 32, of the two second coil wires 37, for the B-phase second coil wire 37 indicated by the alternate long and short dash line, for example, the end 37a on the winding start side is connected to the second terminal pin 12. After entanglement, it is hooked on the edge of one side wall part 327 and wound around the cylindrical body part 320. Then, the end portion 37 b on the winding end side of the second coil wire 37 for the B phase is hooked on the protrusion 329, and then drawn to the second terminal pin 12 and entangled with the second terminal pin 12. Accordingly, the protrusion 329 functions as a guide portion that defines the routing position of the end portion 37b of the second coil wire 37 for the B phase. In addition, for the second coil wire 37 for the B bar phase indicated by a two-dot chain line, after winding the end portion 37c on the winding start side to the second terminal pin 12, it is hooked on the edge of the other side wall portion 328, The cylindrical body 320 is wound in a direction opposite to the second coil wire 37 for the B phase. Then, the end portion 37d on the winding end side of the second coil wire 37 for the B bar phase is hooked on the protrusion 329, and is then drawn to the second terminal pin 12 and entangled with the second terminal pin 12. Therefore, the protrusion 329 functions as a guide portion that defines the routing position of the end portion 37d of the second coil wire 37 for the B bar phase. The end portions 37a, 37b, 37c, and 37d of the second coil wire 37 thus routed are all entangled with the second terminal pin 12, and then electrically connected to the second terminal pin 11 by soldering. It is connected to the.

[Terminal pin configuration]
FIG. 6 is an explanatory diagram showing a method for imparting slack to the ends of the first coil wire 36 and the second coil wire 37 in the motor 1 according to the embodiment of the present invention, and FIG. Shows a state before the slack is applied to the first coil wire 36, FIG. 6B shows a state after the slack is applied to the first coil wire 36, and FIG. 6C shows the second coil. A state before the slack is imparted to the wire 37 is shown, and FIG. 6D shows a state after the slack is imparted to the second coil wire 37. In FIG. 6, only the end portions of the first coil wire 36 and the second coil wire 37 are indicated by a one-dot chain line and a two-dot chain line.

  As shown in FIGS. 3 and 4, the first terminal pin 11 is a coil in which the end portion of the first coil wire 36 is entangled on one end side in the longitudinal direction, that is, on the opposite output side in the motor axis L direction. On the other hand, the other end side in the longitudinal direction, that is, the output side in the direction of the motor axis L is a wiring material connecting portion 11a to which a wiring board 8 described later is connected. The first terminal pin 11 is bent at an intermediate position in the longitudinal direction so that the wiring member connecting portion 11a extends in the motor axis L direction, while the coil wire binding portion 11b protrudes radially outward. The first terminal pin 11 is L in which the wiring member connecting portion 11a is press-fitted and fixed from the opposite output side in the motor axis L direction to the output side with respect to a small hole penetrating in the motor axis L direction in the first terminal block 314. The end portions of the wiring material connecting portions 11a of the three first terminal pins 11 are linearly arranged in a line in the circumferential direction. The ends of the coil wire binding portions 11b of the three first terminal pins 11 are also linearly arranged in a line in the circumferential direction. The first terminal pin 11 is formed by pressing a straight pin into the first terminal block 314 and then bending it into an L shape. In addition, about the 1st terminal pin 11, you may press-fit to the 1st terminal block 314 what was bent in the L shape previously. In addition, when the first coil bobbin 31 is resin-molded, the first terminal pin 11 and the first coil bobbin 31 may be integrated by insert-molding the first terminal pin 11.

  In the 1st terminal pin 11, the coil wire binding part 11b has comprised the obtuse angle, for example, the angle of 120 degrees, with respect to the wiring material connection part 11a. However, when the motor 1 is manufactured, in the first coil bobbin 31, before the end portions 36a, 36b, 36c, 36d of the first coil wire 36 are entangled with the coil wire binding portion 11b of the first terminal pin 11, As shown in FIG. 6A, the angle formed by the coil wire binding portion 11b and the wiring material connecting portion 11a is set to 90 degrees or less, for example, 90 degrees, and the end portions 36a, 36b, 36c of the first coil wire 36 are set. , 36d is entangled with the coil wire linking portion 11b of the first terminal pin 11, and then the coil wire linking portion 11b is formed at an obtuse angle with respect to the wiring member connecting portion 11a as shown in FIG. Bend to the cylindrical body 310 side. As a result, at the end portions 36 a, 36 b, 36 c, 36 d of the first coil wire 36, the portion between the portion wound around the first coil bobbin 31 and the portion entangled with the first terminal pin 11. Appropriate slack is imparted.

  As shown in FIGS. 3 and 4, the second terminal pin 12 also has one end side in the longitudinal direction, that is, the opposite output side in the motor axis L direction, like the first terminal pin 11. On the other hand, the other end side in the longitudinal direction, that is, the output side in the direction of the motor axis L is connected to a wiring material connecting portion to which a wiring board 8 to be described later is connected. 12a. The second terminal pin 12 is bent at an intermediate position in the longitudinal direction so that the wiring member connecting portion 12a extends in the motor axis L direction, while the coil wire binding portion 12b protrudes radially outward. The second terminal pin 12 is an L in which the wiring member connecting portion 12a is press-fitted and fixed from the opposite output side in the motor axis L direction to the output side in a small hole penetrating in the motor axis L direction in the second terminal block 324. The ends of the wiring member connecting portions 12a of the three second terminal pins 12 are linearly arranged in a line in the circumferential direction. The ends of the coil wire binding portions 12b of the three second terminal pins 12 are also linearly arranged in a line in the circumferential direction. Similarly to the first terminal pin 11, the second terminal pin 12 is formed by press-fitting a straight pin and fixing it to the second terminal block 324 and then bending it into an L shape. The second terminal pin 12 may be press-fitted and fixed to the second terminal block 324 by bending it into an L shape in advance. Further, when the second coil bobbin 32 is resin-molded, the second terminal pin 12 and the second coil bobbin 32 may be integrated by insert-molding the second terminal pin 12.

  Also in the second terminal pin 12, like the first terminal pin 11, the coil wire binding portion 12b forms an obtuse angle, for example, an angle of 120 ° with respect to the wiring member connection portion. However, when the motor 1 is manufactured, in the second coil bobbin 32, before the end portions 37a, 37b, 37c, 37d of the second coil wire 37 are entangled with the coil wire binding portion 12b of the second terminal pin 12, As shown in FIG. 6C, the angle formed by the coil wire binding portion 12b with respect to the wiring member connection portion 12a is set to 90 degrees or less, for example, 90 degrees, and the end portions 37a, 37b of the second coil wire 37 are set. After tying 37c and 37d to the coil wire tie portion 12b of the second terminal pin 12, as shown in FIG. 6D, the coil wire tie portion 12b forms an obtuse angle with respect to the wiring material connection portion 12a. Bend to the cylindrical body 320 side. As a result, at the end portions 37a, 37b, 37c, and 37d of the second coil wire 37, a portion between the portion wound around the second coil bobbin 32 and the portion entangled with the second terminal pin 12 Appropriate slack is imparted to.

[Configuration of Connector Unit 10 and Wiring Board 8 (Wiring Material)]
FIG. 7 is an explanatory view showing a method of configuring the connector portion 10 in the motor 1 according to the embodiment of the present invention. FIG. 7A shows a state in which the stator is accommodated in the motor case 2. 7 (b) shows a state where the connector housing 90 is attached to the motor case 2, and FIG. 7 (c) shows a state where the wiring board 8 is attached to the connector portion 10. FIG.

  1 and 2 again, in the motor 1 of the present embodiment, the end of the connector terminal 95 opposite to the output side is connected to the connector portion 10 by using the rectangular cutout 240 formed in the side surface portion 24 of the motor case 2. An external connector member (not shown) can be coupled to the connector portion 10 by being exposed outside the motor case 2. In this embodiment, the connector terminal 95 of the connector unit 10 is electrically connected to the first terminal pin 11 and the second terminal pin 12 via the wiring board 8.

  In configuring the connector unit 10, in this embodiment, as shown in FIG. 7, a plurality of connector terminals 95 electrically connected to the first coil wire 36 and the second coil wire 37, and these connector terminals 95. And the connector housing 90 is attached to the motor case 2. Each of the connector terminals 95 is made of a metal terminal pin, and the connector housing 90 is made of a resin molded product. The connector housing 90 has a main body portion 91 that holds the five connector terminals 95 in a row, and protrudes from both circumferential sides (both left and right sides) of the main body portion 91 toward the motor case 2 to the outer peripheral surface of the motor case 2. A stopper portion 93 that abuts and a hook portion 94 that protrudes toward the motor case 2 from both circumferential sides (left and right sides) of the main body portion 91 at a position adjacent to the stopper portion 93 on the output side. .

  In this embodiment, the main body portion 91 of the connector housing 90 includes a rectangular tube portion 92 whose upper portion is closed by the upper bottom portion 920, and the connector terminal 95 is press-fitted into a small hole formed in the upper bottom portion 920 of the rectangular tube portion 92. It is fixed. Below the rectangular tube portion 92 is an opening, and when the rectangular tube portion 92 is viewed from the opposite output side in the motor axis L direction, the end portion of the connector terminal 95 is exposed. When resin molding the connector housing 90, the connector terminal pins 95 and the connector housing 90 may be integrated by insert molding of the connector terminal pins 95.

  In this embodiment, the five connector terminals 95 are arranged in one row so as to be parallel to the row formed by the wiring material connecting portions 12 a of the first terminal pins 11 and the second terminal pins 12. One end portion protrudes from the upper bottom portion 920 of the rectangular tube portion 92 toward the output side, while the other end portion of the connector terminal 95 is directed toward the opposite output side in the motor axis L direction in the rectangular tube portion 92. It is in an exposed state (see FIG. 1B).

  In the connector housing 90, each of the two hook portions 94 includes a claw portion 940 projecting outward in the circumferential direction. Therefore, when the front end side of the hook portion 94 is inserted into the motor case 2 from the notch 240 of the motor case 2, the stopper portion 93 comes into contact with the outer peripheral surface of the motor case 2 and the claw portion 940 is inside the motor case 2. The connector housing 90 is attached to the motor case 2 by being caught on the peripheral surface. As a result, the connector portion 10 is configured on the side surface portion 24 of the motor case 2.

  Here, the second coil bobbin 32 includes an engaging portion 323 that engages with the connector housing 90 to position the connector housing 90 when the connector housing 90 is attached to the motor case 2. In this embodiment, the engaging portion 323 is formed as an engaging convex portion that protrudes radially outward from the outer peripheral end of the flange portion 322 of the second coil bobbin 32, and in the main body portion 91 of the connector housing 90, A recessed portion 99 into which the engaging portion 323 is fitted is formed at a position exposed on the side opposite to the output side from the cylindrical portion 92 (that is, a portion not inside the rectangular cylindrical portion 92) (see FIG. 1B). In this embodiment, the concave portion 99 is formed as a through hole, and the projecting dimension of the engaging portion 323 is larger than the depth dimension of the concave portion 99 formed of the through hole. Therefore, in a state where the engaging portion 323 is fitted in the concave portion 99, the distal end portion of the engaging portion 323 is in a state protruding from the concave portion 99. Note that when an external connector (not shown) is coupled to the connector portion 10, the distal end portion of the engaging portion 323 engages with the external connector, and functions such as positioning of the external connector and prevention of disconnection are exhibited.

  When the connector unit 10 is configured in this manner, the output side end surface 314 s from which the wiring member connecting portion 11 a of the first terminal pin 11 projects in the first terminal block 314 of the first coil bobbin 31, and the second terminal of the second coil bobbin 32. The output side end surface 324 from which the wiring member connecting portion 12a of the second terminal pin 12 projects in the base 324 and the output side end surface 320s of the upper bottom portion 320 from which the connector terminal 95 projects in the connector housing 90 are located on the same plane. The output-side end face 320s of the connector housing 90 constitutes a part of the board mounting portion 33. Further, the five connector terminals 95 are arranged in one row so as to be parallel to the row formed by the first terminal pins 11 and the second terminal pins 12. Therefore, in this embodiment, the wiring board 8 is disposed so as to overlap the board mounting portion 33 configured by the first terminal block 314, the second terminal block 324, and the connector housing 90, and the wiring board 8 and the connector terminal 95 are connected to each other. Electrical connection with the first terminal pin 11 and electrical connection between the connector terminal 95 and the second terminal pin 12 are performed.

  In the wiring board 8, through holes 81 are formed in two rows at positions overlapping the first terminal pins 11, the second terminal pins 12, and the connector terminals 95, and lands 82 are formed around the through holes 81. ing. In the wiring board 8, predetermined lands 82 are electrically connected to each other by a wiring pattern 83. Accordingly, the wiring board 8 is disposed so as to overlap the first terminal block 314, the second terminal block 324, and the connector housing 90, and the first terminal pin 11, the second terminal pin 12, and the connector terminal 95 are passed through the wiring board 8. If protruding from the hole 81, the first terminal pin 11, the second terminal pin 12, and the connector terminal 95 and the land 82 of the wiring board 8 can be electrically connected by soldering. Therefore, the connector terminal 95 can be electrically connected to the first coil wire 36 and the second coil wire 37 via the first terminal pin 11 and the second terminal pin 12.

  In this embodiment, the wiring substrate 8 is a rectangular rigid substrate whose substrate body is made of a glass-epoxy substrate, a paper-phenol substrate, or the like. Lands 82 and wiring patterns 83 are formed on the substrate surface.

  The number of the first terminal pins 11 and the second terminal pins 12 is six in total, but a common potential is applied to the common terminal pins. Therefore, in the wiring board 8, the connector terminals 95 corresponding to the common terminal pins among the first terminal pins 11 and the second terminal pins 12 are made common, so the total number of connector terminals 95 is five. .

  The connector part 10 configured in this manner is covered with a protective cover 97 made of resin. The protective cover 97 includes a cover body portion 970 that covers the connector portion 10 on the output side, and hook portions 971 with two claws that protrude toward the motor case 2 from both sides of the cover body portion 970. Accordingly, when the front end side of the hook portion 971 is inserted into the motor case 2 from the notch 240 of the motor case 2, the cover main body portion 970 comes into contact with the outer peripheral surface of the motor case 2, and the claw portion of the hook portion 971 is The protective cover 97 is attached to the motor case 2 by being caught on the inner peripheral surface of the case 2.

[Method for Manufacturing Motor 1]
With reference to FIGS. 1-7, the process of forming the stator and the connector part 10 among the manufacturing processes of the motor 1 which concerns on embodiment of this invention is demonstrated.

  In the manufacturing method of the motor 1 of this embodiment, in the first coil wire winding process, as shown in FIGS. 5A and 5B, the first coil bobbin 31 has two first coil wires. 36, after winding the end portion 36a on the winding start side of one first coil wire 36 to the coil wire binding portion 11b of the first terminal pin 11, it is hooked on the edge of the one side wall portion 317 and is cylindrical. Wind around the body 310. Then, the end portion 36 b on the winding end side of the first coil wire 36 is hooked on the protrusion 319, and then is drawn to the first terminal pin 11 and entangled with the coil wire binding portion 11 b of the first terminal pin 11. Further, with respect to the other first coil wire 36, after winding the end portion 36 c on the winding start side to the coil wire binding portion 11 b of the first terminal pin 11, it is hooked on the end edge of the other side wall portion 318 to form a cylinder. Wind around the cylindrical body 310. Then, the end portion 36d on the winding end side of the first coil wire 36 is hooked on the protrusion 319, and is then drawn to the first terminal pin 11 to be entangled with the coil wire binding portion 11b of the first terminal pin 11. Next, the end portions 36a, 36b, 36c, 36d of the first coil wire 36 and the coil wire binding portion 11b of the first terminal pin 11 are soldered.

  When this process is performed, the first terminal pin 11 is bent at 90 ° as shown in FIG. 6A, but the end of the first coil wire 36 is bound to the coil wire of the first terminal pin 11. After tangling to the portion 11b, or after soldering the end portion of the first coil wire 36 and the coil wire linking portion 11b of the first terminal pin 11, as shown in FIG. Bending portion 11b is slightly bent to the opposite output side (side on which cylindrical body portion 310 is located), and the angle formed by coil wire binding portion 11b and wiring material connecting portion 11a is an obtuse angle. As a result, slack is imparted to the end of the first coil wire 36.

  In the second coil wire winding step, as in the first coil wire winding step, as shown in FIGS. 5A and 5B, two second coil wires 37 are provided in the second coil bobbin 32. Of these, after winding the end portion 37a of one second coil wire 37 on the coil wire binding portion 12b of the second terminal pin 12, it is hooked on the edge of the one side wall portion 327 to form a cylindrical body. Wind around the part 320. Then, the end portion 37 b on the winding end side of the second coil wire 37 is hooked on the protrusion 329, and is then drawn to the second terminal pin 12 and entangled with the coil wire binding portion 12 b of the second terminal pin 12. Further, with respect to the other second coil wire 37, after winding the end portion 37 c on the winding start side to the coil wire binding portion 12 b of the second terminal pin 12, the second coil wire 37 is hooked on the end edge of the other side wall portion 328 to form a cylinder. Wind around the cylindrical body 320. Then, the end portion 37d on the winding end side of the second coil wire 37 is hooked on the protrusion 329, and is then drawn to the second terminal pin 12 and is entangled with the coil wire binding portion 12b of the second terminal pin 12. Next, the end portions 37a, 37b, 37c, and 37d of the second coil wire 37 and the coil wire binding portion 12b of the second terminal pin 12 are soldered.

  When performing this process, the second terminal pin 12 is bent at 90 ° as shown in FIG. 6C, but after the end of the second coil wire 37 is entangled with the second terminal pin 12, Alternatively, after soldering the end portion of the second coil wire 37 and the coil wire binding portion 12b of the second terminal pin 12, the coil wire binding portion 12b is turned to the non-output side as shown in FIG. 6 (d). The angle formed by the coil wire binding portion 12b and the wiring material connecting portion 12a is made an obtuse angle by bending slightly to the side where the cylindrical body portion 320 is located. As a result, slack is imparted to the end of the second coil wire 37.

  Next, as shown in FIG. 7A, the B-phase outer stator core 43, the second coil bobbin 32, the B-phase inner stator core 44, the A-phase inner stator core 42, the first coil bobbin 31, and the A-phase The outer stator cores 41 are sequentially stacked on the inner side of the motor case 2 to constitute the stator 3. At this time, the first terminal block 314 and the second terminal block 324 are projected from the notch 240 of the motor case 2 to the outside.

  Next, as shown in FIG. 7B, the connector housing 90 that holds the connector terminal 95 is attached to the motor case 2 using the notch 240 of the motor case 2. At this time, the connector housing 90 is positioned by engaging the engaging portion 323 of the second coil bobbin 32 with the recess 99 in the connector housing 90.

  Next, as shown in FIG. 7C, the output-side end surface from which the wiring member connecting portion 11 a of the first terminal pin 11 protrudes in the first terminal block 314 of the first coil bobbin 31, the second terminal of the second coil bobbin 32. The wiring board 8 is arranged so as to overlap the output side end face from which the wiring member connecting portion 12a of the second terminal pin 12 protrudes in the base 324 and the output side end face from which one end of the connector terminal 95 protrudes in the connector housing 90. . As a result, the wiring material connecting portion 11a of the first terminal pin 11, the wiring material connecting portion 12a of the second terminal pin 12, and one end of the connector terminal 95 pass through the through hole 81 of the wiring board 8, so that the first The wiring material connecting portion 11 a of the one terminal pin 11, the wiring material connecting portion 12 a of the second terminal pin 12, and one end of the connector terminal 95 are soldered to the land 82 of the wiring substrate 8.

  Next, the protective cover 97 is attached to the motor case 2 using the notch 240 of the motor case 2 as shown in FIGS. If the stator has been configured inside the motor case 2, the rotor 5, the base plate 65, and the reduction gear train 7 are either in the process before configuring the connector unit 10 or after configuring the connector unit 10. The output shaft 50, the end plate 61, and the like are mounted.

[Main effects of this embodiment]
As described above, in this embodiment, the first coil bobbin 31 includes the first terminal block 314 that holds the first terminal pin 11 at one end portion in the motor axis L direction, while the second coil bobbin 32 has the motor axis line. A second terminal block 324 that holds the second terminal pin 12 is attached to the distal end portion of the arm portion 325 that extends from one end in the L direction toward a position adjacent to the first terminal block 314 in the circumferential direction. I have. For this reason, since it can supply electric power to a coil wire (the 1st coil wire 36 and the 2nd coil wire 37) in one place of stator 3, simplification of composition can be attained.

  Further, after winding the first coil wire 36 around the first coil bobbin 31, the end portion of the first coil wire 36 is entangled with the first terminal pin 11, while the second coil wire 37 is attached to the second coil bobbin 32. After winding, the end of the second coil wire 37 is entangled with the second terminal pin 12, and then the first coil bobbin 31 and the second coil bobbin 32 may be arranged in the motor axis L direction. For this reason, in the manufacturing process of the motor 1, even when a malfunction such as a short circuit or disconnection occurs in one of the first coil bobbin 31 and the second coil bobbin 32, it is not necessary to discard the entire stator 3. In addition, since the coil wires are separately wound around the first coil bobbin 31 and the second coil bobbin 32, the coil wire winding work can be efficiently performed. Therefore, the yield and productivity of the motor can be improved.

  Further, the end portion of the second coil wire 37 extends to the second terminal pin 12 through the radially outer side of the arm portion 325. For this reason, since the arm portion 325 is interposed between the portion of the second coil wire 37 routed to the second terminal pin 12 and the first coil wire 36, the second coil wire 37 is slackened. However, the second coil wire 37 is not short-circuited with the first coil wire 36.

  Moreover, in the 1st terminal pin 11 and the 2nd terminal pin 12, while the one end side of a longitudinal direction is the coil wire binding part 11b, 12b, the other end side of a longitudinal direction becomes the wiring material connection part 11a, 11a. The coil wire binding portions 11b and 12b are separated from the wiring material connection portions 11a and 12a. For this reason, even if the end of the first coil wire 36 and the end of the second coil wire 37 are slackened by performing processing such as bending the coil wire binding portions 11b and 12b, the wiring material connection The portions 11a and 12a are not displaced. Therefore, the wiring board 8 can be easily and reliably connected to the wiring material connecting portions 11a and 12a.

  Moreover, in the first terminal pin 11 and the second terminal pin 12, since the coil wire binding portions 11b and 12b protrude radially outward, the ends of the first coil wire 36 and the second coil wire 37 are coiled. It is possible to efficiently perform the work of tying the binding parts 11b and 12b. Even in such a configuration, after the end of the first coil wire 36 and the end of the second coil wire 37 are bound to the first terminal pin 11 and the second terminal pin 12, the coil wire binding portions 11b and 12b are cylindrical. The slack can be imparted to the end portion of the first coil wire 36 and the end portion of the second coil wire 37 simply by folding the body portions 310 and 320 toward the side.

  Further, in the arm portion 325 of the second coil bobbin 32, a guide portion is provided that defines a routing position when the end portion of the second coil wire 37 extends toward the second terminal pin 12 by the protrusion 329. Further, in the arm portion 315 of the first coil bobbin 31, similarly to the arm portion of the second coil bobbin 32, the routing position when the end portion of the first coil wire 36 is extended toward the first terminal pin 11 by the protrusion 319. The guide part to prescribe | regulate is comprised. For this reason, since the 1st coil wire 36 and the 2nd coil wire 37 can be routed by passing through a predetermined position, there is an advantage that it is hard to generate short circuit between coil wires.

  Furthermore, in this embodiment, when the connector portion 90 is configured by attaching the connector housing 90 that holds the connector terminal 95 to the motor case 2, the second coil bobbin 32 has the engaging portion 323 that engages with the connector housing 90. Therefore, the connector housing 90 is positioned with high accuracy on the second coil bobbin 32. As a result, the connector housing 90 is also positioned with high accuracy on the first coil bobbin 31. Therefore, the positional accuracy between the wiring material connecting portions 11a and 11b of the first terminal pin 11 and the second terminal pin 12 and the connector terminal 95 is high. Therefore, a structure in which the first terminal pins 11 and the second terminal pins 12 and the connector terminals 95 are connected by the wiring board 8 can be employed. Therefore, the end portion of the first coil wire 36 and the end portion of the second coil wire 37 may be tied to the first terminal pin 11 and the second terminal pin 12, and the end portion of the first coil wire 36 and the second coil wire 37 There is no need to tie the end of the two coil wire 37 to the connector terminal 95. Therefore, the productivity of the motor 1 can be improved. Moreover, since the positional accuracy of the wiring material connecting portions 11a and 11b of the first terminal pins 11 and the second terminal pins 12 and the connector terminals 95 is high, even if the wiring board 8 is a rigid board and cannot be deformed, the wiring When the substrate 8 is arranged, the wiring material connecting portion 11a of the first terminal pin 11, the wiring material connecting portion 12a of the second terminal pin 12, and the one end of the connector terminal 95 securely connect the through hole 81 of the wiring substrate 8. To penetrate. Therefore, the wiring material connecting portion 11a of the first terminal pin 11, the wiring material connecting portion 12a of the second terminal pin 12, and one end of the connector terminal 95 are easily and reliably soldered to the land 82 of the wiring board 8. be able to. Therefore, an inexpensive rigid board can be used as the wiring board 8, so that the component cost of the motor 1 can be reduced.

  Here, the engaging portion 323 may be formed as an engaging recess. However, in this embodiment, since the engaging portion 323 is formed as an engaging convex portion that fits into the concave portion 99 of the connector housing 90, the second coil bobbin 32 is made of resin compared to a case where the engaging portion 323 is configured as an engaging concave portion. The structure of the metal mold | die at the time of manufacturing by shaping | molding can be simplified. Further, in the second coil bobbin 32, the engaging portion 323 is provided at the outer peripheral side end portion of the flange portion 322. It can be simplified. Further, since the engaging portion 323 is formed in the flange portion 322 of the second coil bobbin 32, even when the engaging portion 323 is pushed when the external connector is coupled to the connector portion 10, the second coil bobbin 32 is deformed. Hard to occur. In addition, in a state where the engaging portion 323 is fitted in the concave portion 99, the distal end portion of the engaging portion 323 is in a state protruding from the concave portion 99. Therefore, when an external connector (not shown) is coupled to the connector portion 10, the distal end portion of the engagement portion 323 can be engaged with the external connector. Can be positioned and prevented from coming off.

DESCRIPTION OF SYMBOLS 1 Motor 2 Motor case 3 Stator 5 Rotor 8 Wiring board 10 Connector part 11 1st terminal pin 11a, 12a Wiring material connection part 11b, 12b Coil wire binding part 12 2nd terminal pin 31 1st coil bobbin 32 2nd coil bobbin 36 1st 1 coil wire 37 2nd coil wire 323 second coil bobbin engaging portion 324 second terminal block 90 connector housing 95 connector terminal 99 concave portion 314 of connector housing first terminal block 315, 325 arm portion 319, 329 protrusion (guide portion)

Claims (5)

In a motor having a stator including a coil bobbin around which a coil wire is wound, a motor case for holding the stator, and a connector portion for supplying power to the coil wire.
The connector portion includes a connector terminal electrically connected to the coil wire, and a connector housing that holds the connector terminal and is held by the motor case.
The coil bobbin includes a cylindrical body portion around which the coil wire is wound, a coil wire binding portion around which an end portion of the coil wire is wound, and the connector housing when the connector housing is attached to the motor case. And an engaging portion for engaging and positioning the connector housing.   The motor according to claim 1, wherein the engaging portion is an engaging convex portion that fits into a concave portion of the connector housing. The coil bobbin includes a flange portion whose diameter is increased at an end portion of the cylindrical body portion,
The motor according to claim 1, wherein the engaging portion is provided at an outer peripheral side end portion of the flange portion. The coil wire binding portion is a terminal pin held on the coil bobbin,
The motor according to claim 1, wherein the terminal pin and the connector terminal are electrically connected by a wiring board.   The motor according to claim 4, wherein the wiring board is a rigid board.

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