JP6188304B2 - motor - Google Patents

Description

  The present invention relates to a motor in which a radially outer side of a coil bobbin is covered with a case member.

  In a motor such as a stepping motor, the stator has a structure in which the outer side in the radial direction of a coil bobbin around which a coil wire is wound is covered with a case member. The coil bobbin has flanges on both sides of a cylindrical body, and a coil wire is wound around the body. Moreover, the edge part of a coil wire is routed between the terminal of a terminal block, and a trunk | drum along the terminal block formed in the radial direction outer side of the collar part. With regard to the terminal block of such a coil bobbin, various structures have been proposed in order to prevent disconnection of the coil wire.

  For example, a configuration has been proposed in which one coil wire is routed in a groove formed in the terminal block so that no disconnection occurs at the intersection of the coil wires when the coil wire is routed (see Patent Document 1). . In addition, by making the vicinity of the terminal lower than the inner surface of the flange in the terminal block, the structure prevents the coil wire from floating at the base of the terminal and prevents the coil wire from being disconnected when the board is connected to the terminal. It has been proposed (see Patent Document 2). Further, a configuration has been proposed in which the coil wire is routed in a region that is one step lower in the terminal block, and a vibration-proof rubber is overlapped on the coil wire routing portion (see Patent Document 3).

JP 2002-112489 A JP 2011-72089 A Japanese Utility Model Publication No. 58-139856

  However, in any of the configurations of Patent Documents 1 to 3, the disconnection of the coil wire when the case member is put on the coil bobbin is not considered. For this reason, when the case member is put on the coil bobbin, the portion of the coil wire routed between the terminal and the body portion of the coil bobbin is pressed by the end of the case member, and the coil wire is disconnected. There is. Such a problem occurs even when a notch is formed at a position overlapping the terminal block in the end portion of the case member. In other words, when covering the coil bobbin with the case member, if the position is adjusted by rotating the case member in the circumferential direction, the portion of the case member where the notch is not formed will come into contact with the portion where the coil wire is routed, and the coil wire is cut To do.

  In view of the above problems, an object of the present invention is to prevent the coil wire routing portion from contacting and cutting the case member when the case member is put on the coil bobbin around which the coil wire is wound. It is to provide a motor that can be used.

  In order to solve the above-mentioned problems, in the present invention, a barrel portion, a first flange portion that expands at one end portion in the motor axial direction of the barrel portion, and an expansion portion at the other end portion in the motor axial direction of the barrel portion. A coil bobbin having a second flange part having a diameter and a terminal block for holding a terminal on a radially outer side of the first flange part, a coil part wound around the trunk part, and the trunk part side of the terminal block In a motor having a coil wire having a routing portion routed between the terminal and the body portion along the surface of the body, and a case member having a cylindrical portion covering a radially outer side of the body portion Of the surface of the terminal block on the body side, outside the region overlapping the second flange portion in the motor axial direction, the entire coil wire routing region overlapping the coil wire routing portion and the motor axial direction is The inner surface of the first collar facing the second collar The said barrel portion in a motor axial direction, characterized in that located on the opposite side.

  In the present invention, "the routing portion routed between the terminal and the barrel portion along the surface of the terminal block on the barrel portion side" means that the routing portion is in the motor axis direction on the barrel portion side surface of the terminal block. It means that it is routed so that it overlaps, the configuration where the routing part is in contact with the surface of the terminal block body side, and the whole or part of the routing part is floating from the surface of the terminal block body side It is meant to include both forms.

  In the present invention, when the coil wire is wound around the body portion of the coil bobbin, the end portion of the coil wire is located between the body portion and the terminal along the surface on the body portion side of the terminal block on the first flange side. Be drawn around. And when covering a case member on the coil bobbin which wound the coil wire, it covers a case member from the 2nd collar part side of a coil bobbin. Here, in the outer region of the surface of the terminal block on the body portion side that overlaps with the second flange portion in the motor axial direction, the entire coil wire routing region that overlaps with the coil wire routing portion in the motor axial direction is Since it is located on the opposite side of the body in the motor axis direction from the inner surface of the first collar facing the second collar, when the case member is covered on the coil bobbin, the coil wire routing part and the case member are completely , Do not touch, or do not make strong contact even if contact. Therefore, a situation in which the coil wire is cut when the case member is put on the coil bobbin can be avoided.

  In the present invention, among the routing portions, a routing portion of one end portion of the coil wire intersects with a routing portion of the other end portion of the coil wire, and the intersection portion of the routing portion is the first portion. It is preferable that it is located in the area | region which overlaps with a 2 collar part in a motor axial direction. Since it will not contact a case member if it exists in the area | region which overlaps with a 2nd collar part in a motor axial direction, the cutting | disconnection of a coil wire in an intersection part can be prevented reliably.

  In the present invention, the coil bobbin has a receiving portion positioned on the outer side in the radial direction of the first flange portion and overlapping the cylindrical portion in the motor axial direction on the body portion side in the motor axial direction from the coil wire routing region. Is preferably formed. According to such a configuration, when the case member is put on the coil bobbin, the case member comes into contact with the receiving portion, so that contact between the case member and the coil wire routing portion can be prevented.

  In this invention, it is preferable that the said receiving part comprises the plane which followed the said inner surface of the said 1st collar part.

  In this invention, it is preferable that the said receiving part is formed in the both sides which pinch | interpose the said terminal block in the circumferential direction. According to this configuration, it is possible to reliably prevent contact between the case member and the coil wire routing portion.

  In the present invention, of the surface on the body portion side of the terminal block, the outer region of the region overlapping the second flange portion in the motor axial direction is the entire radially outer region including the coil wire routing region. It is preferable that it is a low region located on the opposite side of the body portion from the inner surface of the first collar portion in the motor axial direction.

  In this invention, you may employ | adopt the structure which the said coil wire routing area | region becomes a groove-shaped recessed part dented in the motor axis direction at the opposite side to the said trunk | drum.

  In the present invention, the body side surface of the terminal is preferably located in the same position as the coil wire routing area or on the opposite side of the body from the coil wire routing area in the motor axial direction.

  In the present invention, when the coil wire is wound around the body portion of the coil bobbin, the end portion of the coil wire is located between the body portion and the terminal along the surface on the body portion side of the terminal block on the first flange side. Be drawn around. And when covering a case member on the coil bobbin which wound the coil wire, it covers a case member from the 2nd collar part side of a coil bobbin. Here, in the outer region of the surface of the terminal block on the body portion side that overlaps with the second flange portion in the motor axial direction, the entire coil wire routing region that overlaps with the coil wire routing portion in the motor axial direction is Since it is located on the opposite side of the body in the motor axis direction from the inner surface of the first collar facing the second collar, when the case member is covered on the coil bobbin, the coil wire routing part and the case member are completely , Do not touch, or do not make strong contact even if contact. Therefore, a situation in which the coil wire is cut when the case member is put on the coil bobbin can be avoided.

It is explanatory drawing of the motor to which this invention is applied. It is explanatory drawing of the stator of the motor which concerns on Embodiment 1 of this invention. It is explanatory drawing of the outer stator core of the motor which concerns on Embodiment 1 of this invention. It is explanatory drawing of the coil bobbin of the motor which concerns on Embodiment 1 of this invention. It is explanatory drawing of the state which wound the coil wire around the coil bobbin of the motor which concerns on Embodiment 1 of this invention. It is the top view which looked at the coil bobbin of the motor which concerns on Embodiment 2 of this invention from the 2nd collar part side. It is sectional drawing of the coil bobbin of the motor which concerns on Embodiment 3 of this invention.

  An example of a motor to which the present invention is applied will be described with reference to the drawings. In the following description, in the motor axial direction L, the side on which the rotating shaft 50 protrudes from the stator 40 is referred to as an output side L1, and the side opposite to the side on which the rotating shaft 50 protrudes from the stator 40 is the non-output side. This will be described as L2.

[Embodiment 1]
(overall structure)
FIG. 1 is a half cross-sectional view of a motor according to Embodiment 1 of the present invention. A motor 1 shown in FIG. 1 is a stepping motor used for driving an optical head or the like in an optical disc driving apparatus such as a DVD or a Blu-ray disc, and has a cylindrical stator 40. The stator 40 has a structure in which an A-phase stator set and a B-phase stator set are arranged so as to overlap in the motor axial direction L. For this reason, in the stator 40, two annular coil bobbins 2 (the first coil bobbin 2A and the second coil bobbin 2B) around which the coil wire 20 is wound are disposed so as to overlap each other in the motor axial direction L, and the coil bobbin 2 In each, an inner stator core 3 and an outer stator core 4 are arranged to overlap each other. More specifically, an annular inner stator core 3A and an outer stator core 4A having a U-shaped cross section are disposed on both sides of the first coil bobbin 2A in the motor axial direction L, and the motor axis line in the second coil bobbin 2B. On both sides in the direction L, an annular inner stator core 3B and an outer stator core 4B having a U-shaped cross section are disposed so as to overlap each other. A plurality of pole teeth 31 and 41 of the inner stator cores 3A and 3B and the outer stator cores 4A and 4B are arranged in the circumferential direction on the inner peripheral surfaces of the first coil bobbin 2A and the second coil bobbin 2B. Thus, the cylindrical stator 40 provided with the rotor arrangement | positioning hole 30 is comprised, and the rotor 5 is coaxially arrange | positioned inside the stator 40 radial direction. In this embodiment, as will be described later, the outer stator cores 4A and 4B each extend to the outside in the radial direction of the first coil bobbin 2A and the second coil bobbin 2B to constitute the motor case 10.

  The coil bobbin 2 (the first coil bobbin 2A and the second coil bobbin 2B) is made of resin. As will be described later, the coil bobbin 2 has terminal blocks 25 (25A, 25B) for holding terminals 91 (terminals 91A, 91B). It is integrally formed. The terminals 91 (terminals 91A and 91B) protrude radially outward from the motor case 10 and are connected to a wiring material (not shown) such as a flexible wiring board.

  In the rotor 5, the rotating shaft 50 extends in the motor axial direction L, and a cylindrical permanent magnet 59 is fixed by an adhesive 56 at a position near the counter-output side L 2 of the rotating shaft 50. The permanent magnet 59 has an outer peripheral surface 590 that is opposed to the pole teeth 31 and 41 of the stator 40 at a predetermined interval on the inner side in the radial direction inside the rotor arrangement hole 30. The rotating shaft 50 is made of a metal material such as stainless steel, brass, and aluminum. The outer peripheral surface 57 of the rotating shaft 50 that protrudes from the stator 40 (the output side L1) has an optical head (not shown). A spiral groove 58 is formed in which the rack formed on the side is engaged. In the rotating shaft 50, the portion where the spiral groove 58 is formed has a larger diameter than the portion where the permanent magnet 59 is fixed.

(Configuration of plate 65)
A plate 65 is provided on the output side L1 with respect to the stator 40. The plate 65 opposes the fixed plate portion 651 fixed to the end surface 48 of the output side L1 of the stator 40 (end surface of the output side L1 of the motor case 10) by a method such as welding, and faces the fixed plate portion 651 on the output side L1. A support plate portion 652 that supports the end portion 51 on the output side L1 of the rotary shaft 50, and a connection plate portion 653 that extends in the motor axial direction L and connects the fixed plate portion 651 and the support plate portion 652. ing. The fixed plate portion 651 is formed with a hole 650 that passes through the rotation shaft 50.

(Bearing structure)
In the plate 65, the support plate portion 652 is configured with an output side L1 bearing mechanism 6 that supports the end portion 51 on the output side L1 of the rotary shaft 50 so as to be rotatable in the motor axial direction L and the radial direction. In the bearing mechanism 6, the bearing member 60 on the output side L 1 is fixed to the support plate portion 652 of the plate 65, and the end portion 51 on the output side L 1 of the rotating shaft 50 is the end surface of the bearing member 60 on the counter-output side L 2. And is supported by being fitted inside the recess 61 that is recessed toward the output side L1. The bearing member 60 has a large-diameter portion 64 that abuts against the surface on the counter-output side L2 of the support plate portion 652 while passing through a hole 656 formed in the support plate portion 652 of the plate 65. The movement to the output side L1 is restricted by the large diameter portion 64. In the rotary shaft 50, the end portion 51 on the output side L1 has a smaller diameter than the portion where the spiral groove 58 is formed, and is processed into a hemispherical shape.

  The end portion 52 on the counter-output side L2 of the rotary shaft 50 is configured with a bearing mechanism 7 on the counter-output side L2 that supports the end portion 52 on the counter-output side L2 of the rotary shaft 50 so as to be rotatable in the motor axial direction L and the radial direction. Has been. In this embodiment, a recess 595 that is recessed toward the output side L1 is formed on the end surface of the permanent magnet 59 on the counter-output side L2, and the bearing mechanism 7 projects from the permanent magnet 59 toward the counter-output side L2. The end 52 on the counter-output side L2 of the rotary shaft 50 is rotatably supported inside the recess 595. In the rotating shaft 50, the end 52 on the non-output side L2 is slightly smaller in diameter than the portion to which the permanent magnet 59 is fixed, and is processed into a hemispherical shape.

  In the bearing mechanism 7 on the counter-output side L 2, a disc-shaped bearing member 70 is disposed around the end portion 52 on the counter-output side L 2 of the rotating shaft 50, and the end portion 52 of the rotating shaft 50 is connected to the end of the bearing member 70. It fits inside the cylindrical part 71 and is rotatably supported. A leaf spring-like biasing member 80 is disposed on the opposite side L2 to the bearing member 70, and the bearing member 70 is held between the biasing member 80 and the stator 40 and is rotated. The shaft 50 is urged toward the output side L1 by the urging member 80.

  More specifically, the urging member 80 includes an end plate portion 81 fixed to the end surface 49 on the counter-output side L2 of the stator 40 by welding or the like, and a leaf spring portion cut and raised at the center portion of the end plate portion 81. 85, and the end plate portion 81 holds the end portion of the bearing member 70 between the end plate portion 81 and the stator 40, and the plate spring portion 85 urges the rotating shaft 50 toward the output side L1. . Here, the output side L1 of the rotary shaft 50 is configured with a bearing mechanism 6 on the output side L1 that supports the end 51 of the output side L1 of the rotary shaft 50 so as to be rotatable in the motor axial direction L and the radial direction. . Accordingly, since the rotary shaft 50 is biased so that the end portion 51 on the output side L1 contacts the bearing mechanism 6, when the rotary shaft 50 rotates, the rotary shaft 50 in the motor axial direction L is rotated. Shaking is prevented.

(Detailed configuration of stator 40)
The positional relationship between the motor case 10 (outer stator core 4) and the coil bobbin 2 will be described below with reference to FIGS. 2 to 5 in addition to FIG. In the stator 40 of the motor 1 of this embodiment, the A-phase stator set and the B-phase stator set have the same configuration, and are configured symmetrically in the motor axial direction L. Therefore, the following description will be made without distinguishing between the A phase and the B phase.

  FIG. 2 is an explanatory diagram of the stator 40 of the motor 1 according to the first embodiment of the present invention. FIGS. 2A and 2B are an enlarged perspective view showing one phase of the stator 40 and an exploded view. It is a perspective view. FIG. 3 is an explanatory diagram of the outer stator core 4 of the motor 1 according to the first embodiment of the present invention. FIGS. 3A, 3B, and 3C show the outer stator core 4 with the pole teeth 41 protruding. FIG. 6 is a plan view, a side view, and a cross-sectional end view when cut along the line POP ′. In addition, since the inner stator core 3 does not constitute the motor case 10, the illustration is omitted in FIG.

  1, 2, and 3, in the motor 1 of the present embodiment, the outer stator core 4 is configured as a case member that configures the motor case 10, and thus has a U-shaped cross section. More specifically, the outer stator core 4 includes an annular portion 45, a plurality of pole teeth 41 cut and raised in the motor axial direction L from the inner peripheral edge of the annular portion 45, and an outer peripheral edge of the annular portion 45. A cylindrical tube portion 46 that extends in the motor axial direction L and faces the pole teeth 41 radially outward is provided. The outer stator core 4 is disposed so as to overlap the coil bobbin 2 around which the coil wire 20 is wound. As a result, the coil bobbin 2 is disposed between the pole teeth 41 and the cylindrical portion 46. Here, at the inner peripheral edge of the annular portion 45, a portion sandwiched between the pole teeth 41 adjacent in the circumferential direction is a concave portion 451 cut out radially outward, and the concave portion 451 is illustrated in FIG. 1 is used for positioning the bearing member 70 described with reference to FIG. Further, a notch 452 that is further cut out in an arc shape is formed on a part of the concave portion 451, and the notch 462 is used when the outer stator core 4 and the bearing member 70 are positioned. Positioning pins (jigs / not shown) are inserted.

  Two notches 461 and 468 that are notched in the motor axial direction L are formed at the opposite ends of the cylindrical portion 46, and when the outer stator core 4 and the coil bobbin 2 are combined, the outer stator core 4 The coil bobbin 2 is aligned so that the notch 461 having a large circumferential dimension among the notches 461 and 468 overlaps the terminal block 25 of the coil bobbin 2 in the motor axial direction L.

  In this embodiment, both end portions of the notch 461 are semicircular shallow notches 462, and a step 463 that is one step shallower than the bottom of the notch 461 is formed at a position adjacent to the notch 462 in the circumferential direction. . As shown in FIG. 1, convex portions 36 projecting radially outward from the outer peripheral edge of the inner stator core 3 enter both ends of the notches 461, and the step portions 463 are arranged on the motor axial line on the convex portions 36 of the inner stator core 3. The inner stator core 3 is positioned in contact with the direction L.

  On the other hand, as shown in FIG. 1, the notch 468 with a small circumferential dimension enters the convex portion 35 protruding radially outward from the outer peripheral edge of the inner stator core 3, and the bottom of the notch 468 is the inner stator core 3. The inner stator core 3 is positioned in contact with the convex portion 35 from the motor axial direction L. In addition, both ends of the notch 468 are formed with notches 469 that are further deeply cut out in a semicircular shape.

(Detailed configuration of coil bobbin 2)
FIG. 4 is an explanatory diagram of the coil bobbin 2 of the motor 1 according to the first embodiment of the present invention. FIGS. 4 (a), (b), (c), (d), and (e) show the coil bobbin 2. It is the top view seen from the 2nd collar part side, a bottom view, a side view, sectional drawing, and the side view to which the terminal block 25 was expanded. FIG. 5 is an explanatory diagram of a state in which the coil wire 20 is wound around the coil bobbin 2 of the motor 1 according to Embodiment 1 of the present invention, and FIGS. 5 (a), (b), (c), (d). These are the top view which looked at the coil bobbin 2 from the 2nd collar part side, bottom view, sectional drawing, and the side view to which the terminal block 25 was expanded. In FIGS. 4 (a) and 5 (a), the second collar portion is partially cut away.

  1, 2, 4, and 5, in the motor 1 of this embodiment, the coil bobbin 2 has a cylindrical body portion 23 and a circle whose diameter increases at one end portion in the motor axial direction L of the body portion 23. The terminal 91 is held on the outer side in the radial direction of the annular first flange portion 21, the annular second flange portion 22 whose diameter increases at the other end portion in the motor axial direction L of the body portion 23, and the first flange portion 21. Terminal block 25. The first flange 21 has an annular shape having the same outer dimensions as the second flange 22 except for the portion where the terminal block 25 is formed, and overlaps in the motor axial direction L. The first flange 21 has a larger thickness than the second flange 22, and is a terminal thicker than the first flange 21 by a portion protruding radially outward from the outer peripheral edge of the first flange 21. A stand 25 is configured. The terminal block 25 is thicker than the first flange 21 but does not protrude to the inner side (the second flange 22 side) from the inner surface 210 of the first flange 21 facing the second flange 22 side. .

  The terminal 91 is formed of a resin portion protruding in a pin shape further radially outward from the radially outer end face 256 of the terminal block 25, and is formed integrally with the terminal block 25. For this reason, the portion corresponding to the base of the terminal 91 is thick on the terminal block 25, and on the side opposite to the side where the second flange portion 22 of the terminal block 25 is located by the thick portion. Convex portions 257 and 258 protruding in the motor axial direction L are formed.

  In this embodiment, the terminal block 25 has a rectangular shape when viewed from the motor axial direction L, and the terminal 91 is formed at a position closer to the inside from both ends in the circumferential direction of the terminal block 25. In the terminal block 25, a portion located on the outer side in the circumferential direction from the terminal 91 is a tapered surface 255 inclined from the end surface 256 toward the trunk portion 23. For this reason, the outer side surface 911 of the terminal 91 is in a state of being exposed to the vicinity of the trunk portion 23 (the first flange portion 21).

  The coil wire 20 is wound between the first flange portion 21 and the second flange portion 22 on the radially outer side of the body portion 23 of the coil bobbin 2, and both ends of the coil wire 20 are formed on the body portion. 23 and the terminal 91 are routed along the surface 251 on the body 23 side of the terminal block 25. For this reason, the coil wire 20 is routed along the coil portion 201 wound around the body portion 23 and the surface 251 on the body portion 23 side of the terminal block 25 between the body portion 23 and the terminal 91 2. The book routing portions 202 and 203 and the binding portions 204 and 205 entangled with the terminal 91 are provided. The routing portions 202 and 203 extend in a direction crossing each other, and an intersection portion 208 of the routing portions 202 and 203 exists at a position overlapping the surface 251 on the body 23 side of the terminal block 25 in the motor axial direction L. doing.

  Here, in the terminal block 25, the portion located on the outer side in the circumferential direction from the terminal 91 is a tapered surface 255 inclined from the end surface 256 toward the trunk portion 23, and the outer side surface 911 of the terminal 91 is It is in the state exposed to the vicinity of the part 23 (1st collar part 21). For this reason, both the routing parts 202 and 203 are entangled with the terminal 91 from a position relatively close to the coil part 201 (body part 23), and the intersection part 208 is compared with the coil part 201 (body part 23). Close to the target. In this embodiment, the intersecting portion 208 is located in a region of the first flange portion 21 and the terminal block 25 that overlaps the second flange portion 22 in the motor axial direction L.

  In FIG. 2, the outer edge of the region overlapping the second flange portion 22 in the motor axial direction L is indicated by a dotted line D on the surface 251 of the terminal block 25 on the body portion 23 side. Of the surface 251 on the body 23 side, in the outer region of the region that overlaps the second flange portion 22 in the motor axial direction L, the coil wire routing region 250 that overlaps the routing portions 202 and 203 of the coil wire 20 in the motor axial direction L. The entirety is located on the opposite side of the body portion 23 in the motor axial direction L from the inner surface 210 of the first flange portion 21. That is, of the surface 251 of the terminal block 25 on the body 23 side, in the outer region of the region overlapping with the second flange portion 22 in the motor axial direction L, it overlaps with the routing portions 202 and 203 of the coil wire 20 in the motor axial direction L. The entire coil wire routing area 250 is lower than the inner surface 210 of the first flange 21.

  More specifically, the outer region of the surface 251 of the terminal block 25 on the body 23 side that overlaps the second flange portion 22 in the motor axial direction L is a radial outer region including the coil wire routing region 250. The entirety is a low region 254 located on the opposite side of the body portion 23 in the motor axial direction L from the inner surface 210 of the first flange portion 21. In this embodiment, of the surface 251 of the terminal block 25 on the body 23 side, the region located at the same position in the motor axial direction L and the inner surface 210 of the first flange 21 and the low region 254 extend linearly. It is partitioned by the existing step 253. The low region 254 is lower than the inner surface 210 of the first flange 21 by a dimension larger than the wire diameter of the coil wire 20.

  In this embodiment, the low region 254 extends to the terminal 91. For this reason, the surface 914 on the body portion 23 side of the terminal 91 is in the same position in the motor axial direction L as the low region 254 (coil wire routing region 250).

  Of the surface 251 on the body 23 side of the terminal block 25, the body 23 side (the first flange 21 side) from the step 253 is the outer side of the first flange 21 in the radial direction of the outer stator core 4. At the position overlapping the cylindrical portion 46 in the motor axial direction L, the receiving portion 27 is located on the body portion 23 side in the motor axial direction L from the coil wire routing region 250 (the low region 254). The receiving portion 27 forms a flat surface that is continuous with the inner surface 210 of the first flange portion 21.

  Further, in the present embodiment, in the first flange portion 21, a convex portion 219 that protrudes radially outward is formed on the opposite side of the terminal block 25 from the receiving portion 27 in the circumferential direction. The coil wire routing region 250 (low region 254) is closer to the body 23 side in the motor axial direction L at a position overlapping the cylindrical portion 46 of the outer stator core 4 in the motor axial direction L outside the first flange portion 21 in the radial direction. A receiving portion 28 is formed. Similar to the receiving portion 27, the receiving portion 28 also forms a flat surface that is continuous with the inner surface 210 of the first flange portion 21.

(Main effects of this form)
In order to manufacture the motor 1 of this embodiment, first, the coil wire 20 is wound around the coil bobbin 2, and then the outer stator core 4 is placed on the outer side in the radial direction of the coil bobbin 2. At that time, the outer stator core 4 is covered from the second flange portion 22 side of the coil bobbin 2, and the outer stator core 4 is covered with the cylindrical portion 46 of the outer stator core 4 radially outside the first flange portion 21. The end portion of the cylindrical portion 46 faces the surface 251 of the terminal block 25 on the body portion 23 side in the motor axial direction L. Here, on the first flange portion 21 side of the coil bobbin 2, the routing portions 202 and 203 of the coil wire 20 extend along the surface 251 of the terminal block 25 on the body portion 23 side. Among the routing portions 202 and 203, the portion located in the inner region from the region overlapping the second flange portion 22 in the motor axial direction L is inside the cylindrical portion 46 and therefore does not contact the cylindrical portion 46. On the other hand, of the routing parts 202 and 203, the part located outside the area overlapping the second flange part 22 in the motor axial direction L faces the cylindrical part 46 in the motor axial direction L. However, in the present embodiment, the outer region of the surface 251 on the body 23 side of the terminal block 25 that is outside the region overlapping the second flange portion 22 in the motor axial direction L is the entire radially outer region including the coil wire routing region 250. Is a low region 254 located on the opposite side of the body portion 23 in the motor axial direction L from the inner surface 210 of the first flange portion 21. For this reason, when the outer stator core 4 is put on the coil bobbin 2, the routing portions 202 and 203 of the coil wire 20 and the outer stator core 4 are not in contact with each other, or are not in strong contact with each other. Therefore, cutting of the coil wire 20 can be prevented.

  In addition, the coil bobbin 2 is positioned on the outer side in the radial direction of the first flange portion 21 so as to overlap with the cylindrical portion 46 of the outer stator core 4 in the motor axial direction L, from the coil wire routing region 250 toward the body 23 in the motor axial direction L. Positioned receiving portions 27 and 28 are formed. The receiving portions 27 and 28 are formed on both sides of the terminal block 25 in the circumferential direction. For this reason, when the outer stator core 4 is put on the coil bobbin 2, the end of the cylindrical portion 46 of the outer stator core 4 is in contact with the receiving portions 27 and 28 even when the outer stator core 4 is rotated in the circumferential direction. Even if there is, there is no contact with the routing portions 202 and 203 of the coil wire 20, or no strong contact even if contact is made. Therefore, cutting of the coil wire 20 can be reliably prevented.

  Further, since the intersecting portion 208 of the routing portions 202 and 203 is located in a region overlapping the second flange portion 22 in the motor axial direction L, the intersecting portion 208 does not contact the cylindrical portion 46 of the outer stator core 4. Therefore, cutting of the coil wire 20 at the intersecting portion 208 can be reliably prevented.

[Embodiment 2]
FIG. 6 is a plan view of the coil bobbin 2 of the motor 1 according to Embodiment 2 of the present invention as viewed from the second flange 22 side. In addition, in FIG. 6, the 2nd collar part 22 is shown in the state notched partially. In addition, since the basic configuration of the present embodiment is the same as that of the first embodiment, common portions are denoted by the same reference numerals and description thereof is omitted.

  In the first embodiment, in the coil bobbin 2, the entire radial outer region including the coil wire routing region 250 is the low region 254 on the surface 251 on the body 23 side of the terminal block 25. On the other hand, in this embodiment, as shown in FIG. 6, in the outer region of the surface 251 on the body 23 side of the terminal block 25 that overlaps the second flange portion 22 in the motor axial direction L, the coil wire A coil wire routing region 250 that overlaps the 20 routing portions 202 and 203 in the motor axial direction L is a groove-like recess 259 extending along the routing portions 202 and 203. Therefore, in the surface 251 on the body 23 side of the terminal block 25, the hatched area in FIG. 6 is a plane that is continuous with the inner surface 210 of the first flange 21. Further, an intersecting portion 208 between the routing portions 202 and 203 is located in a region overlapping the second flange portion 22 in the motor axial direction L.

  In this embodiment, in the surface 251 on the body 23 side of the terminal block 25, the routing portions 202 and 203 of the coil wire 20 are formed in the groove-shaped recess 259 in the outer region of the region overlapping the second flange portion 22 in the motor axial direction L. Located in. For this reason, also in this embodiment, when the outer stator core 4 is put on the coil bobbin 2 as in the first embodiment, the drawn portions 202 and 203 of the coil wire 20 and the outer stator core 4 are not in contact with each other or are in contact with each other. There is no strong contact. Therefore, according to the present embodiment, the same effects as those of the first embodiment can be obtained, such as the cutting of the coil wire 20 can be reliably prevented.

[Embodiment 3]
FIG. 7 is a cross-sectional view of coil bobbin 2 of motor 1 according to Embodiment 3 of the present invention. Since the basic configuration of this embodiment is the same as that of Embodiment 1, common portions are denoted by the same reference numerals and description thereof is omitted.

  As shown in FIG. 7, in this embodiment as well, in the coil bobbin 2, in the coil bobbin 2, the entire radial outer region of the surface 251 on the body 23 side of the terminal block 25 is a low region 254. In the coil bobbin 2, in the first embodiment, the terminal 91 is a resin integral with the terminal block 25, but in this embodiment, the terminal 91 is a metal terminal pin whose root portion is held by the terminal block 25. is there. For this reason, the surface 914 on the body 23 side of the terminal 91 is located on the opposite side of the body 23 from the coil wire routing region 250 in the motor axial direction L.

[Other embodiments]
In the above embodiment, the outer stator core 4 is used as a case member. However, the present invention is applied to the motor 1 in which a case member separate from the outer stator core 4 is disposed outside the outer stator core 4. May be applied.

1 Motor 2 Coil bobbin 4 Outer stator core (case member)
5 Rotor 20 Coil wire 21 First flange portion 22 Second flange portion 23 Body portion 25 Terminal block 27, 28 Receiving portion 40 Stator 46 Tube portion 91 of outer stator core Terminal 202, 203 Coil wire routing portion 208 Intersection portion 250 Coil wire Lead area 251 Terminal block body surface 254 Low area 259 Groove-shaped recess 914 Terminal body surface

Claims (8)

A body part, a first flange part that expands at one end in the motor axis direction of the body part, a second flange part that expands at the other end part in the motor axis direction of the body part, and the first flange A coil bobbin having a terminal block for holding the terminal on the radially outer side of the part;
A coil portion wound around the body portion, and a coil wire provided with a routing portion routed between the terminal and the body portion along the surface of the terminal block on the body portion side;
A case member having a cylindrical portion covering the radially outer side of the body portion;
In a motor having
Of the surface on the body portion side of the terminal block, in the region outside the region overlapping the second flange portion in the motor axial direction, the entire coil wire routing region overlapping in the motor axial direction with the coil wire routing portion is The motor, wherein the motor is located on the opposite side of the body portion in the motor axial direction from the inner surface of the first flange portion facing the second flange portion side. Among the routing portions, the routing portion of the one end portion of the coil wire and the routing portion of the other end portion of the coil wire intersect,
2. The motor according to claim 1, wherein the crossing portion of the routing portion is located in a region overlapping the second flange portion in the motor axial direction.   The coil bobbin is formed with a receiving portion positioned on the body side in the motor axial direction from the coil wire routing region at a position overlapping the cylindrical portion in the motor axial direction outside the first flange portion in the radial direction. The motor according to claim 1, wherein the motor is provided.   4. The motor according to claim 3, wherein the receiving portion forms a plane continuous with the inner surface of the first flange portion.   The motor according to claim 3 or 4, wherein the receiving part is formed on both sides of the terminal block in the circumferential direction.   Of the surface of the terminal block on the body portion side, the outer region of the region overlapping the second flange portion in the motor axial direction is the entire radially outer region including the coil wire routing region of the first flange portion. 6. The motor according to claim 1, wherein the motor is in a low region located on a side opposite to the body portion in the motor axial direction from the inner surface.   The motor according to any one of claims 1 to 5, wherein the coil wire routing region is a groove-like recess that is recessed on the opposite side of the body portion in the motor axial direction.   2. The body side surface of the terminal is located in the same position as the coil wire routing area in the motor axial direction or on the opposite side of the body from the coil wire routing area. The motor as described in any one of thru | or 7.

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