JP2005229678A - Motor and coil winder for motor core - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enhance an occupancy of winding being arranged in slots of a motor core while preventing the collapse of a coil member. <P>SOLUTION: A plurality of teeth assemblies 10A and 10B obtained by winding a wire member 13, at a predetermined pitch, in the slots 12a of the motor core 11 while arranging are joined to bond the side faces 11c of the core. In one of a pair of adjacent teeth assemblies, the wire member located in the slot and projecting partially from the extension 11d of the side face of the core are arranged while being shifted at a predetermined pitch or a pitch equal to an integer times thereof. The other teeth assembly is joined to one teeth assembly by locating a wire member corresponding to the shifted wire member of one teeth assembly in a space 14B produced by a positional shift. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention occurs when a coil winding device for a motor and a core of the motor, particularly a motor having a large space factor, which is a volume ratio of a winding member to a winding space between cores, and a space factor is increased. The present invention relates to a coil winding apparatus for a core that solves the problem.

In a motor in which a plurality of teeth assemblies in which a relatively thick wire member is wound in a concave groove formed on both sides of a core are annularly assembled so that side surfaces of the core on which the concave groove is formed are joined to each other, As a means for increasing the space factor of the wire member, for example, as shown in Patent Document 1, the first layer of the coil wound around the stator core covered with the bobbin (insulator) is aligned on the bobbin with a predetermined pitch without any gap. Winding, the second layer is aligned and wound so as to be placed between each wire member of the first layer, and the same is applied so that the second layer is placed between each wire member of the previous layer. Some of the near layers are made so as not to protrude from the coil winding region having a trapezoidal cross section formed by the bobbin.
JP 2002-209356 A (paragraphs [0012] to [0014], FIG. 1, FIG. 2, FIG. 4).

  For example, some electric power steering devices use an elongated electric motor to move a rack shaft. The stator of this electric motor is a ring assembly of teeth assemblies wound around a plurality of elongated cores divided in the circumferential direction, and each core is magnetized in a direction toward the center line, that is, in a direction perpendicular to the longitudinal direction. It is like that. 9 to 11 show, as a comparative example, a teeth assembly 1 wound by applying the above-described prior art to such an elongated core 11 covered with an insulator 12. FIG. In this comparative example, the wire member 2 has three layers starting with a winding start line 2a and ending with a winding end line 2b, and each layer has four turns (numbers 1 to 24 written on the cross section of the wire member 2 in FIG. 10 indicate the winding order). As shown in FIG. 9, the wire members 2 forming each winding are arranged at a predetermined pitch so that the portions located in the concave grooves 12a on both sides are in close contact with the longitudinal direction of the core 61 without gaps. Yes. The first layer of wire member 2 to be wound first has a winding order of 1 to 8, the second layer of wire member 2 has a winding order of 9 to 16, and the third layer of wire member 2 is wound. The order is 17-24. The end of the wire member 2 in the winding order 8 of the first layer, the beginning of the wire member 2 in the winding order 9 of the second layer, and the end of the wire member 2 in the winding order 16 of the second layer and the third layer The starting ends of the wire members 2 in the winding order 17 are connected by an arcuate wire member 2 that is inclined with respect to a plane orthogonal to the magnetization direction B (see FIG. 10) on the winding start and winding end wires 2a and 2b sides. In the following description, the core 11 and the insulator 12 are handled as one body, and the core 11 covered with the insulator 12 is simply referred to as the core 11 and is formed on the outer surface of the insulator 12 covered with the groove on both sides of the core 11. 12 a is referred to as a concave groove of the core 11.

  In this comparative example, as shown in FIG. 10, the wire members 13 (shown by broken lines) having the winding order of 23 and 24 constituting the final winding of the third layer are extended surfaces of the side surface 11 c of the base 11 a of the core 11. It protrudes from 11d. The plurality of teeth assemblies 1 wound around the core 11 are alternately arranged with the winding direction reversed, and the side surfaces 11c of the core 11 are joined to each other in an annular manner to form a stator of the electric motor. When trying to connect in such a manner, as described above, the winding order protruding from the extended surface 11d of the side surface 11c of the base portion 11a is 24 line members 13 (when connected to the opposite side surface 11c, the winding order is As shown in FIG. 11, the 23 wire members 13) interfere with each other, so that the stator of the motor cannot be assembled unless the winding members 23 and 24 are removed. In this way, the stator of the motor assembled except for the wire members 13 with the winding order 23 and 24 has a gap between the wire members 13 with the winding order of the pair of teeth assemblies 1 between 10 and 12. There is a problem that the space factor decreases.

  According to the present invention, one of the pair of adjacent teeth assemblies that partially protrudes from the extended surface of the side surface of the core is arranged with a position shifted by a predetermined pitch or an integral multiple thereof. The purpose is to solve each of these problems. In addition, if the wire members are shifted by a predetermined pitch or an integral multiple thereof as described above, the wire members 2 may be unwound when the wire member 2 is wound around the core 11 due to the space generated by the shifting. However, the present invention also aims to solve such a problem.

  To this end, the motor according to the present invention includes a plurality of teeth assemblies formed by aligning and winding wire members at predetermined pitches in concave grooves formed on both sides of the core, and the side surfaces of the core where the concave grooves are formed are mutually connected. In a motor assembled in an annular shape so as to be joined, one of a pair of adjacent tooth assemblies adjacent to each other is a part of a linear member located in a concave groove that partially protrudes from an extended surface of the side surface of the core. The other tooth assembly is arranged in a space generated by shifting the position of the line member corresponding to the shifted position of the one tooth assembly and the corresponding line member. Thus, it is characterized by being joined to one of the tooth assemblies.

In the motor according to claim 1, it is preferable to align a portion located in the groove of the core of the wire member in a direction parallel to the axial direction of the motor.
In the motor according to claim 1 or 2, the core preferably has an elongated shape in the axial direction of the motor.

In addition, the coil winding device for the motor core according to the present invention is supported on the extension line of the rotation axis so that the flyer turning around the rotation axis and the concave grooves formed on both sides of the motor core are orthogonal to the rotation axis. And a core support device that rotates around a second rotation axis that is orthogonal to the rotation axis, and a line member that is guided and supplied by a tip protruding in the radial direction of the flyer is turned by the flyer. Of the linear members that are aligned at a predetermined pitch in the concave groove of the core and that partially protrude from the extended surface of the side surface of the core on which the concave groove is formed, the linear member positioned within the concave groove has a predetermined pitch or an integral multiple thereof. In a coil winding device for a motor core wound by shifting the position only, a clamp device comprising a clamper having a projecting edge protruding toward the core and an operating mechanism for operating the clamper is provided. In the vicinity of the start point of the period in which the flyer is obliquely wound around the core so that the flyer shifts the wire member by a predetermined pitch or an integral multiple thereof, the operating mechanism is moved by a predetermined pitch or an integral multiple thereof. In the winding direction of the wire member, the wire member is moved to an operating position that is held at a position before a predetermined pitch or an integral multiple thereof against an external force that abuts the one side that is the rear side and applies the same wire member against the external force. It is characterized by being operated so as to return to a standby position that does not interfere with the operation of other members near or after the end point.
The coil winding device for the motor core according to claim 4 is further extended to the core side at one end of the protruding edge of the clamper, and the flyer is inclined to the core so as to shift the wire member by a predetermined pitch or an integral multiple thereof. In the first half of the winding period, it is preferable to provide a protrusion that guides the wire member wound obliquely around the core.

  As described above, according to the motor of the first aspect of the present invention, one of the pair of adjacent teeth assemblies is a part of the linear member located in the concave groove from the extended surface of the side surface of the core. The projecting parts are shifted by a predetermined pitch or an integral multiple thereof, and the other tooth assembly is shifted by shifting the position of the corresponding line member from the position of one of the tooth assemblies. Since it is located in the generated space and joined to one of the teeth assemblies, the line member located in the recessed groove of each teeth assembly partially protrudes from the extended surface of the side surface of the core. A pair of teeth assemblies can be joined without interfering with each other. Compared to the comparative example described above, the space factor is the portion of the linear member partially protruding from the extended surface of the side surface of the core. Increase of wire members The number of periods increases. As a result, a motor using such a pair of teeth assemblies can improve the performance as compared with the conventional one, or the motor can be miniaturized while maintaining the same performance.

  According to the invention of claim 2, wherein the portion of the wire member located in the concave groove of the core is aligned in a direction parallel to the axial direction of the motor, the space generated by shifting the wire member of one of the tooth assemblies. Since the other tooth assembly line member positioned in this space is perfectly aligned, the pair of teeth assemblies can be assembled with the side surfaces of the cores securely joined together.

  According to the third aspect of the present invention, the outer shape of the motor can be elongated.

  The end of one turn of the wire member located in the concave groove of the core and the start end of the next turn are connected by an arcuate wire member inclined at one end of the core with respect to a plane perpendicular to the magnetization direction. However, in the portion where the line members are shifted by a plurality of times a predetermined pitch in order to form a space between the line members positioned in the concave groove, the arc-shaped line member connecting the end and the start end of the front and rear line members Since the angle of inclination with respect to the plane perpendicular to the magnetization direction increases, the wire member in the groove located immediately before the space formed in the winding direction is affected by the external force applied to the wire member during winding. There is a risk that it will be drawn into and collapsed. However, according to the coil winding device for the motor core according to the fourth aspect of the present invention, the coil winding device includes a clamper having a projecting edge protruding toward the core and an operating mechanism for operating the clamper. The mechanism closes the clamper before the start of the period in which the flyer is skewed around the core so that the flyer shifts the wire member by a predetermined pitch or an integral multiple thereof. In the winding direction, the wire member is moved to an operating position held at a position before being deviated by a predetermined pitch or an integral multiple thereof against the external force applied to the one side which is the rear side, and near or at the end of the period. After that, it is operated so as to return to the standby position where it does not interfere with the operation of other members. The unwinding that occurs further occurs in the winding direction of the wire member before the flyer deviates by a predetermined pitch or an integral multiple thereof in the vicinity of the start point of the period in which the flyer is obliquely wound around the core so as to shift the wire member by a predetermined pitch or an integral multiple thereof. This is prevented by the protruding edge of the clamper that is in contact with one side.

  One end of the clamper's protruding edge extends further to the core side, and guides the wire member that is obliquely wound around the core in the first half of the period in which the flyer is obliquely wound around the core so as to shift the wire member by a predetermined pitch or an integral multiple thereof. According to the invention described in claim 5 in which the projecting portion is provided, the collapse caused by the external force applied to the wire member during winding is oblique to the core so that the flyer shifts the wire member by a predetermined pitch or an integral multiple thereof. In the first half of the period of winding the wire, it is also prevented by the protrusions that guide the wire member that is wound obliquely around the core, so that the prevention of collapse is further ensured.

  The best mode for carrying out the coil winding apparatus for the motor and the motor core according to the present invention will be described below with reference to FIGS. First, the coil winding apparatus for the motor and the motor core according to the first embodiment of the present invention will be described with reference to FIGS.

  Each tooth assembly 10A, 10B in which a plurality of members are joined together to form a stator of the motor is elongated in the direction of the central axis of the motor, as in the comparative example shown in FIGS. As shown in FIGS. 1 and 2, the pair of teeth assemblies 10 </ b> A and 10 </ b> B are both covered with an insulator 12 on the outer side of the elongated core 11 in a direction orthogonal to the magnetization direction B. The member 13 is wound around. The core 11 is formed by stacking a large number of plates having a constant cross-sectional shape made of a magnetic material in the longitudinal direction, and includes a base portion 11a, a salient pole portion 11b protruding from the center of one side, and both sides from the tip of the salient pole portion 11b. The groove is formed on the both sides and is formed with a protruding portion projecting into the groove. The back surface of the base portion 11a opposite to the salient pole portion 11b and the tip surface of the salient pole portion 11b are formed in a concentric convex arc shape and a concave arc shape. The elongated core 11 is covered with an insulator 12 made of a synthetic resin molded product having the same shape from both end surfaces to the center in the longitudinal direction, and the both end surfaces of the core 11 and the concave grooves on both sides are covered. The core 11 and the insulator 12 are common to each of the tooth assemblies 10A and 10B. Unless otherwise specified, the core 11 covered with the insulator 12 is simply abbreviated as the core 11 and covers the concave groove of the core 11. The groove 12 a formed in the above is called a groove in the core 11. In this embodiment, the central angle formed by the extended surface 11d of the both side surfaces 11c of the core 11 is 30 degrees.

  The wire member 13 wound around the core 11 of the pair of teeth assemblies 10A and 10B has a thick wire diameter of 1.56 mm and is connected to each other by a jumper wire 13b as shown in FIG. The first teeth assembly 10A and the second teeth assembly 10B are different. The wire member 13 wound around the first tooth assembly 10A has three layers starting with the winding start wire 13a and ending with the crossover wire 13b. Each layer has four turns. In FIG. 1 and FIG. The numbers 1 to 24 indicate the winding order. Of the wire member 13 forming each winding, the portions located in the concave grooves 12a on both sides of the core 11 are parallel to the longitudinal direction of the core 11, that is, the axial direction of the motor, as in the comparative example shown in FIGS. It arrange | positions with a predetermined pitch so that it may contact | adhere without a gap.

  The first layer of the wire member 13 to be wound first has a winding order of 1 to 8, is arranged on the concave groove 12a of the core 11 and arranged at a predetermined pitch so as to be in close contact with each other. Each of the wire members 13 wound toward the tip of the salient pole portion 11b and positioned in the concave groove 12a is a plane in which the same windings such as winding orders 1, 2, 3, and 4 are perpendicular to the magnetization direction B. The winding start line 13a is connected to the starting end of the wire member 13 whose winding order is one. The wire members 13 of the same winding, such as winding orders 1 and 2, 3 and 4, are orthogonal to each other at the end opposite to the winding start and the connecting wires 13a and 13b (hereinafter simply referred to as the winding start wire 13a). Connected by a semicircular arc-shaped line member 13 parallel to the surface, and the next winding such as winding order 2 to 3, 4 to 5, etc., is inclined with respect to the orthogonal plane at the end on the winding start line 13a side. Are connected by a semicircular arc-shaped line member 13. The first layer is thus wound on the core 11.

  The second layer wire member 13 has a winding order of 9 to 16, and the portions located in the concave grooves 12a on both sides of the wire member 13 forming each winding are parallel to the longitudinal direction of the core 11, that is, the axial direction of the motor. And arranged at a predetermined pitch so as to be aligned and in close contact with each other between each line member 13 of the first layer (or between each line member 13 of the first layer and the inner surface of the groove 12a), The core 11 is wound from the distal end side of the salient pole portion 11b toward the base portion 11a. The final end of the wire member 13 having the winding order of 8 constituting the last winding of the first layer is formed by a semi-arc-shaped line member 13 inclined with respect to the orthogonal plane on the winding start wire 13a side, and the winding order is 9 lines. It is connected to the starting end of the member 13. As in the case of the first layer, the wire members 13 of the same winding are connected to each other at the end opposite to the winding start wire 13a by a semi-arc-shaped wire member 13 parallel to the orthogonal plane, and the next winding. The eyes are connected by a semicircular arc-shaped line member 13 that is inclined with respect to the orthogonal plane (the direction of the inclination is opposite to that in the first layer) at the end on the winding start line 13a side.

  Further, the third layer of the line member 13 has a winding order of 17 to 24, and is wound from the base 11a side of the core 11 toward the tip end side of the salient pole portion 11b. Wrapped in the same way. The final end of the wire member 13 having a winding order of 16 constituting the final winding of the second layer is formed by a semicircular arc-shaped line member 13 inclined with respect to the orthogonal plane on the winding start wire 13a side, and the winding order is 17 lines. The last end of the wire member 13 connected to the start end of the member 13 and having a winding order of 24 is connected to the crossover wire 13b. The wire members 13 having winding orders 23 and 24 constituting the final winding of the first tooth assembly 10A are side surfaces of the core 11 to be joined to the second teeth assembly 10B to form a stator of the motor. It protrudes partially from the extended surface 11d of 11c. Further, a space (gap) 14 </ b> A capable of accommodating one line member 13 is provided between the line member 13 having the winding order 23 and 24 and the inner surface of the groove 12 a.

  Next, the second teeth assembly 10B is the same as the teeth assembly 10A except that the winding direction of the wire member 13 with respect to the core 11 is reversed and the third layer is partially wound differently. The third layer composed of the wire member 13 having a winding order of 17 to 24 is the same as the first tooth assembly 10A up to the wire member 13 having a winding order of 17 to 22, but is an extended surface of the side surface 11c of the core 11. The position of the wire member 13 having a winding order of 23 and 24 partially protruding from 11d is shifted by one pitch of a predetermined pitch of the wire member 13 provided in close contact with the concave groove 12a. The first tooth assembly 10A is different from the first tooth assembly 10A only in that a space (gap) 14B capable of accommodating one line member 13 is provided between the first tooth assembly 13A and the 22 wire members 13. In the second teeth assembly 10B, the amount of the wire members 13 having winding orders 23 and 24 protruding from the extended surface 11d of the side surface 11c of the core 11 is larger than that in the case of the first teeth assembly 10A. However, the protrusion from the extended surface 11d of the wire member 13 whose winding order is 23 and 24 must also be partial, and is not allowed to protrude completely.

  Next, FIGS. 3 and 4 show a main part of the winding machine 30 used for winding the wire member 13 around the core 11 to form the above-described teeth assemblies 10A and 10B and the core support device 40 provided on the front side thereof. Is shown. The flyer shaft 31 supported on a frame (none of which is not shown) attached to the bed so as to be pivotable about the rotation axis O1 is controlled by a control device to be rotated and driven back and forth in the axial direction. A flyer 32 extending in the radial direction is fixed to the tip portion, and a top roller 35 is rotatably supported on the tip portion of the flyer 32. The wire member 13 is introduced from a hole formed at the center of the flyer shaft 31 and guided to the top roller 35 via first and second intermediate rollers 33 and 34 provided on the flyer shaft 31 and the flyer 32, and the flyer 32 is swung. Thus, the core 11 supported by the core support device 40 is wound around.

  The core support device 40 includes a servo motor provided on a base 41 fixed on a bed so as to be rotatable around a second rotation axis O2 perpendicular to the rotation axis O1 via a shaft 42a. 43, and a support table 44 that supports the sub-pallet 45 is provided upright in the center of the rotation table 42. As shown in FIG. 1, a pair of cores 11 are mounted on the sub-pallet 45 diagonally back to back, and the longitudinal direction of each core 11 is in the vertical direction perpendicular to the rotation axis O1. The servo motor 43 of the core support device 40 is controlled by the control device so that each core 11 is sequentially indexed on the extension line of the rotation axis O1 facing the flyer 30, and each core 11 is rotated according to the turning of the flyer 30. Thus, the wire member 13 guided and supplied to the top roller 35 is wound around each core 11 as described above.

  Next, the operation when the wire member 13 is wound around each core 11 by the winding machine 30 will be described. The wire member 13 drawn out from the bobbin (not shown) is inserted in advance into the center hole of the flyer shaft 31 through a tension applying device, and drawn out to the core support device 40 side through the outer peripheral portions of the rollers 33, 34, and 35. Then, a sub-pallet 45 having a pair of cores 11 attached diagonally back to back is mounted on the upper end of the support base 44, and the rotary base 42 is rotated by the servo motor 43 to form the first teeth assembly 10A. 11 is indexed on the extension line of the rotation axis O <b> 1 facing the flyer 32, and the tip of the line member 13 led out from the outer peripheral portion of the top roller 35 is locked at a predetermined position of the one core 11 described above.

  If the operation device is operated in this state to start the winding machine 30, the control device turns the flyer shaft 31 and the flyer 32 in a predetermined direction via a servo motor (not shown), and the flyer 32 turns. Accordingly, the wire member 13 guided by the outer peripheral portion of the top roller 35 is supplied to the core 11 and starts to be wound. At the same time, the control device controls the position of the flyer 32 in the advancing / retreating direction, and the servo motor 43 controls the rotation of the subpallet 45 around the second rotation axis O2. In the control of the position of the flyer 32 in the advancing / retreating direction and the rotation control of the sub-pallet 45 around the second rotation axis O2, the line member 13 guided by the top roller 35 is connected to the inside of the groove 12a on both sides of the core 11 and the winding start line. When wound around the end opposite to 13a, the magnetization direction B of the core 11 is set to the rotation axis of the flyer shaft 31 so that the wire member 13 is aligned parallel to the orthogonal plane (plane orthogonal to the magnetization direction B). In order to incline the semicircular arc-shaped line member 13 connected to the next winding from one winding to the orthogonal plane when being wound around the end of the core 11 on the winding start line 13a side in parallel with O1. In addition, the surface including the semicircular arc-shaped line member 13 is controlled so as to be orthogonal to the rotation axis O1.

  When the wire member 13 is wound around the core 11 serving as the first teeth assembly 10A a predetermined number of times and the winding is finished, the control device rotates the rotating base 52 by the servo motor 43, and the second teeth. The other core 11 serving as the assembly 10B is indexed on the extension line of the rotation axis O1 facing the flyer 30, and the wire member 13 is wound around the other core 11 in the same manner as described above. In this case, the flyer 30 is swung in the opposite direction to that of the first teeth assembly 10A described above, but the flyer 32 is controlled in the advancing / retreating direction and the sub-pallet 45 is rotated around the second rotation axis O2. The control is performed in the same manner as in the case of the first tooth assembly 10A. When the winding of the wire member 13 around the other core 11 serving as the second tooth assembly 10B is completed, a pair of teeth assemblies 10A and 10B connected by the crossover wire 13b are obtained. In the case of the second tooth assembly 10B, when the wire member 13 guided by the top roller 35 is wound around the end of the core 11 on the winding end line 13c side, the winding order of the third layer is 22. When connecting the wire member 13 to the wire member 13 having a winding order of 23, the arcuate wire member 13 connecting the portions of the winding order has a large inclination angle with respect to the plane perpendicular to the magnetization direction B. The rotation angle of the pallet 45 is also slightly larger than in other cases.

  If the pair of teeth assemblies 10A and 10B according to the first embodiment described above are joined such that the side surfaces 11c of the respective cores 11 are in contact with each other as shown in FIG. 2, the first teeth assembly is obtained. The wire member 13 in the winding order 24 of 10A partially enters the space 14B of the second teeth assembly 10B, and the wire member 13 in the winding order 24 of the second teeth assembly 10B is the first tooth set. Since it partially enters the space 14A of the three-dimensional body 10A, the members 13A of the teeth assemblies 10A and 10B that protrude partially from the extended surface 11d of the side surface 11c of the core 11 do not interfere with each other. A pair of teeth assemblies 10A and 10B each having a line member 13 partially projecting from the extended surface 11d of the side surface 11c of the core 11 can be joined, and a plurality of pairs of teeth can be joined. Stereo 10A, by sequentially joining 10B, can be a stator of a motor. Therefore, as compared with the comparative example described above, the pair of teeth assemblies 10A and 10B each having the line member 13 partially protruding from the extended surface 11d of the side surface 11c of the core 11 cannot be joined. The space factor can be increased by the amount of the wire member 13 partially protruding from the extended surface 11d of the side surface 11c, so that the number of turns of the wire member 13 can be increased. , 10B, the performance can be improved as compared with the prior art, or the motor can be miniaturized while maintaining the same performance.

  In the first embodiment described above, the portion of the wire member 13 located in the concave groove 12a of the core 11 is aligned in parallel with the longitudinal direction of the core 11, that is, the axial direction of the motor. The space 14B generated by shifting the wire member 13 in the winding order 23 (and 24) of the tooth assembly 10B by a predetermined pitch and the winding order of the first teeth assembly 10A positioned in the space 14B Since the 23 (and 24) line members 13 are perfectly aligned in position and angle, the pair of teeth assemblies 10A and 10B can be assembled by reliably joining the side surfaces 11c of the core 11.

  In the first embodiment described above, the core 11 is elongated in the axial direction of the motor. With this configuration, the outer shape of the motor can be elongated and suitable for an electric power steering device or the like.

  In the above-described first embodiment, as shown in FIG. 2, there is a gap between the line members 13 having the winding order of 18 and 20 with the pair of teeth assemblies 10 </ b> A and 10 </ b> B joined. Yes. Accordingly, the first tooth assembly 10A is provided with a fourth layer of one turn (the winding order is 25 and 26) indicated by a broken line at a position between the wire members 13 having the winding order of 17 and 18, and the second teeth. The assembly 10B has one turn as shown by a broken line at a position between the line members 13 where the winding order is 19, 20 and 21 and 22 which is shifted by one pitch from the first tooth assembly 10A. Even if the fourth layer (the winding order is 25 and 26) is added, as shown in FIG. 2, the pair of teeth assemblies 10A and 10B can be joined without a gap. In this case, the wire member 13 in the winding order 26 of the first teeth assembly 10A enters the space formed outside the wire members 13 in the winding order 18 and 20 of the second teeth assembly 10B, and The line member 13 in the winding order 26 of the second tooth assembly 10B enters a space formed outside the line members 13 in the winding order 20 and 22 of the first tooth assembly 10A. In this way, the space factor can be further increased and the number of windings of the wire member 13 can be further increased, thereby further improving the performance of the motor or maintaining the same performance and further reducing the size of the motor. can do.

  In the first embodiment described above, the third-layer wire member 13 partially protruding from the extended surface 11d of the side surface 11c of the core 11 has two turns (the winding order is 23 and 24 and the one ahead). In the first tooth assembly 10A, the wire members 13 having the winding order 23 and 24 are connected to the line members 13 that do not protrude from the extended surface 11d, and the second tooth assembly 10B has the wire members 23 and 24 in the winding order. 13 is shifted to the outside by one pitch of a predetermined pitch. However, when the central angle formed by the extended surface 11d of the both side surfaces 11c of the core 11 is small, the number of outermost line members 13 that partially protrude from the extended surface 11d increases. In such a case, the first teeth assembly 10A allows half of the outermost line members 13 (partially rounded down) partially protruding from the extended surface 11d to be continuous with the line members 13 not protruding from the extended surface 11d. The second teeth assembly 10B can be implemented by shifting half of the outermost line member 13 partially protruding from the extended surface 11d outward by an integer (same value as half) of a predetermined pitch. It is. Also in this case, in the first teeth assembly 10A, half of the outermost layer line members 13 partially protruding from the extended surface 11d are arranged with a predetermined pitch interval (the first line member 13 extends from the extended surface 11d). In the second teeth assembly 10B, half of the outermost line members 13 partially protruding from the extended surface 11d are arranged with a predetermined pitch (first time). It is also possible to implement the wire member 13 such that the wire member 13 is arranged at a predetermined pitch from each wire member 13 that does not protrude from the extended surface 11d.

  Next, the coil winding apparatus for the motor and the motor core according to the second embodiment of the present invention will be described with reference to FIGS. In the second embodiment, the teeth assemblies 15A and 15B, which are joined together to form the stator of the motor, are arranged in the direction of the central axis of the motor, similarly to the teeth assemblies 10A and 10B of the first embodiment. It is an elongate one, and an insulator 17 is put on the outer side of the elongate core 16, and a wire member 18 is wound around the both 16 and 17. The core 16 and the insulator 17 have the same shape as the core 11 and the insulator 12 of the first embodiment except for specific dimensions and shapes. Also in the second embodiment, the core 16 covered with the insulator 17 is simply referred to as a core 16, and the concave groove 17 a formed outside the insulator 17 covering the concave groove of the core 16 is referred to as a concave groove of the core 16.

  The wire member 18 wound around the first tooth assembly 16A has four layers starting with the winding start wire 18a and ending with the crossover wire 18b. The third layer has four turns and the other layers have three turns. In FIG. 6, numerals 1 to 26 written on the cross section of the wire member 18 indicate the winding order. As in the first embodiment, portions of the wire member 18 forming each winding that are located in the concave grooves 17 a on both sides of the core 16 are arranged at a predetermined pitch parallel to the longitudinal direction of the core 11.

  The first to third layers of the wire member 18 wound around the first teeth assembly 15A are the same as the first teeth assembly 10A of the first embodiment except that the number of windings is different. As for the 4th layer, the wire member 18 of the winding order 21 and 22 which protrudes partially from the extended surface 16d of the side surface 16c of the core 16 is the wire member 18 of the winding order 19 and 20 of the 3rd layer, and the insulator 17 first. The two-winding wire member 18 wound between the inner side surfaces of the wire members 23 and 26 having a winding order of 23 to 26 is shifted in position by one pitch of the predetermined pitch from the wire members 18 of winding order 21 and 22, and the third It is placed and wound between each line member 13 of the layer. Thus, a space (gap) 19A capable of accommodating one wire member 18 is formed between the wire members 13 with the winding order 21 and 22 and the wire members 13 with the winding order 23 and 24, and the winding order is 23. The line members 18 to 26 are located in the extended surface 16 d of the side surface 16 c of the core 16.

  The wire member 18 wound around the second tooth assembly 15B is the same as the tooth assembly 15A except that the winding direction of the wire member 18 with respect to the core 16 is reversed and the winding method of the fourth layer is partially different. It is. The 4th layer which consists of each line member 13 with the winding order of 21-26 is closely_contact | adhered and aligned with each other so that it may be placed between each line member 18 of the 3rd layer, and is arranged and wound with a predetermined pitch. A space (gap) 19 </ b> B that can accommodate one line member 18 is formed between each of the line members 13 having the first winding order of the fourth layer 21 and 22 and the inner surface of the insulator 17. The wire members 18 with the winding order 21 and 22 partially protrude from the extended surface 16d of the side surface 16c of the core 16, but the wire members 18 with the winding order 23 to 26 are located within the extended surface 16d of the side surface 16c. ing.

  The wire member 18 is wound around each of the tooth assemblies 15A and 15B by using the winding machine 30 shown in FIGS. 3 and 4 as in the case of the first embodiment. However, as shown in FIGS. 5 and 7, the wire member 18x wound with the tension F applied thereto forms a space 19A between the wire members 18 of the first tooth assembly 15A. At a position shifted by one pitch of a predetermined pitch, the end of the wire member 18 whose winding order is 22 on the front side of the space 19A in the winding direction is directed toward the start end of the wire member 18 whose rear winding order is 23. In this case, the wire member 18 having a winding order of 22 is drawn into the space 19A and is collapsed. If such collapse occurs, the adjacent tooth assemblies 15A and 15B cannot be joined to form the stator of the motor.

  In order to prevent such collapse, in the second embodiment, as shown in FIGS. 7 and 8, a clamper 21 having a protruding edge 21a protruding toward the core 11 and a cylinder device ( The clamping device 20 which consists of an operation mechanism 22 is provided. The cylinder device 22 is attached to an upper portion of a support 23 that is fixed upright on the bed of the winding machine 30, and the clamper 21 is attached to the tip of the piston rod 22 a of the cylinder device 22 and attached to the subpallet 45. It is advanced and retracted toward the core 16 and is normally in a standby position D indicated by a solid line. The clamper 21 has a protruding edge 21a that protrudes toward the core 11, and a protrusion 21b that extends further toward the core 11 is formed at the upper end of the protruding edge 21a.

  As shown in FIGS. 5 and 7, when the wire member 18 wound around the core 16 by the flyer 32 of the winding machine 30 is wound around the position of the winding order 22, it is further wound obliquely toward the winding order 23 position. The cylinder device 22 of the clamp device 20 is actuated at the start of the period to be moved, and the clamper 21 is advanced from the standby position D to the operation position C indicated by a two-dot chain line 21A. It abuts on the space 19A side of the member 18, that is, one side that is the rear side in the winding direction of the wire member 18. Next, the wire member 18 is wound obliquely from the outside of the end portion of the core 16 toward the position of the winding order 23 by the turning of the flyer 32. At this time, the wire member 18x wound with the tension F is wound. The wire member 18 at the position 22 is pulled in an obliquely rearward direction inclined with respect to the plane orthogonal to the magnetization direction B, but the line member 18 at the position of the winding order 22 is in contact with one side which is the rear side in the winding direction. Since it is held at that position by the protruding edge 21a of 21, it is prevented from being drawn into the space 19A and causing collapse. In the first half of the period in which the wire member 18 is wound obliquely from the outside of the end portion of the core 16 toward the position of the winding order 23 by the turning of the flyer 32, the wire member 18 wound obliquely is the protruding edge of the clamper 21. Since it is also guided by a protrusion 21b formed at the upper end of 21a and further extending toward the core 11, the prevention of collapse is further ensured. After the wire member 18 is wound obliquely from the outside of the end portion of the core 16 toward the position of the winding order 23 by the turning of the flyer 32, the cylinder device 22 waits for the clamper 21 not to interfere with the operation of other members. Return to position D.

  According to the second embodiment described above, as in the first embodiment, among the wire members 18 of the respective tooth assemblies 15A and 15B, one that partially protrudes from the extended surface extension surface 16d of the side surface 16c of the core 16 is provided. A pair of teeth assemblies 15A and 15B each having the line member 18 partially protruding from the extended surface 16d of the side surface 16c of the core 16 can be joined without interfering with each other. Therefore, compared to the comparative example described above, the space factor can be increased and the number of windings of the wire member 18 can be increased. Thus, a motor using such a pair of teeth assemblies 15A, 15B The performance can be improved as compared with the prior art, or the motor can be miniaturized while maintaining the same performance.

  In the second embodiment, as in the first embodiment, when the central angle formed by the extended surfaces 16d of the both side surfaces 16c of the core 16 is small, the outermost line member 18 that partially protrudes from the extended surface 16d is used. The number increases. In such a case, as in the case of the first embodiment, the first teeth assembly 15A is configured such that each half of the outermost layer line members 18 that partially protrude from the extended surface 16d does not protrude from the extended surface 16d. 18, the second tooth assembly 15B can be implemented by shifting half of the outermost line member 18 partially protruding from the extended surface 16d outward by an integral multiple of a predetermined pitch. . Further, in the first teeth assembly 15A, half of the outermost line members 18 that partially protrude from the extended surface 16d are arranged at a predetermined pitch (the first line member 18 does not protrude from the extended surface 16d. In the second teeth assembly 15B, half of the outermost line members 18 partially projecting from the extended surface 16d are arranged at predetermined pitch intervals (the first line member 18). It is also possible to carry out such a configuration that each of the line members 18 that do not protrude from the extended surface 16d is disposed at a predetermined pitch.

  Moreover, according to the coil winding apparatus for the core of the motor of the second embodiment described above, the winding generated by the external force applied to the wire member 18 at the time of winding at the position of the space 19A formed in the wire member 18 wound around the core 16. The collapse is prevented by the projecting edge 21a of the clamper 21 that is actuated by the cylinder device 22 and abuts against the position of the space 19A.

It is sectional drawing which shows the state which attached the pair of teeth assembly used for 1st Embodiment of the motor by this invention to the subpallet. It is sectional drawing which shows the state which joined the pair of teeth assembly shown in FIG. It is a side view which shows the principal part of the winding machine used in order to wind a wire member around a pair of core attached to the subpallet. FIG. 4 is a sectional view taken along line 4-4 of FIG. 3. It is sectional drawing which shows the state which attached the pair of teeth assembly used for 2nd Embodiment of the motor by this invention to the subpallet. It is sectional drawing which shows the state which joined the pair of teeth assembly shown in FIG. It is a top view explaining the clamp device for preventing collapse of a wire member, and its operation. It is A view of FIG. It is a side view of the teeth assembly of a comparative example. It is sectional drawing of the teeth assembly of the comparative example shown in FIG. It is sectional drawing which shows the state which tried to join two comparative examples shown in FIG.

Explanation of symbols

10A, 10B, 15A, 15B ... Teeth assembly, 11, 16 ... Core, 11c, 16c ... Side, 11d, 16d ... Extension surface, 12a, 17a ... Groove, 13, 18 ... Line member, 14B, 19A ... Space (Gap), 20 ... clamping device, 21 ... clamper, 21a ... projecting edge, 21b ... projection, 22 ... cylinder device, 32 ... flyer, 40 ... core support device, C ... operating position, D ... standby position, O1 ... Rotation axis, second rotation axis.

Claims (5)

A plurality of teeth assemblies in which wire members are aligned and wound at predetermined pitches in concave grooves formed on both sides of the core are annularly assembled so that the side surfaces of the core where the concave grooves are formed are joined to each other. In the motor, one of the pair of teeth assemblies adjacent to each other is configured such that one of the linear members located in the concave groove partially protrudes from an extended surface of the side surface of the core is the predetermined pitch or the same. The other teeth assembly is arranged in a space formed by shifting the position of the corresponding line member and the line member corresponding to the shifted position of the one tooth assembly. A motor that is joined to the one tooth assembly so as to be positioned. 2. The motor according to claim 1, wherein a portion of the linear member located in the concave groove of the core is aligned in a direction parallel to the axial direction of the motor. 3. The motor according to claim 1, wherein the core has an elongated shape in an axial direction of the motor. A flyer that revolves around the rotation axis, and a second rotation axis that is orthogonal to the rotation axis, supported on an extension of the rotation axis so that the concave grooves formed on both sides of the motor core are orthogonal to the rotation axis. A core support device that rotates around is arranged, and line members guided and supplied by a tip end projecting in the radial direction of the flyer are aligned at a predetermined pitch within the groove of the core by turning the flyer. Of the linear members positioned in the concave groove, those protruding partially from the extended surface of the side surface of the core where the concave groove is formed are shifted in position by the predetermined pitch or an integral multiple thereof. In the coil winding device for the core of the motor to be wound, the coil winding device comprises a clamper comprising a clamper having a projecting edge protruding toward the core and an operating mechanism for operating the clamper, The moving mechanism moves the clamper so that the protruding edge of the clamper has the predetermined pitch or an integer thereof in the vicinity of the start point of the period in which the flyer is obliquely wound around the core so that the wire member is shifted by the predetermined pitch or an integral multiple thereof. The operating position is held at a position before the predetermined pitch or an integral multiple of the predetermined pitch against an external force that abuts against the one side that is the rear side in the winding direction of the wire member before the deviation by a factor of 2 against the external force applied to the wire member. A coil winding device for a motor core, wherein the coil winding device is moved and operated so as to return to a standby position that does not interfere with the operation of other members near or after the end of the period. 5. The coil winding apparatus for a motor core according to claim 4, wherein one end of a projecting edge of the clamper further extends toward the core, and the flyer shifts the wire member by the predetermined pitch or an integral multiple thereof. A coil winding device for a motor core, characterized in that, in the first half of the period of winding the core around the core, a protrusion for guiding the wire member wound diagonally around the core is provided.

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