JP2004096894A - Method and apparatus for motor winding - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent the shape of a winding end wire on a first core from being lost and guide the wire member to a second core without providing a hooking portion on which a connecting wire between the first and the second cores is to be hooked during wire winding work. <P>SOLUTION: A motor wire winding method is for continuously winding a wire member on two or more cores of a motor wherein its stator is divided into a plurality of cores, each comprising a base portion and a salient pole portion. With respect to any two cores on which the wire member is continuously wound, the core on which the wire member is first wound is designated as first core, and the core on which the wire member is secondly wound is designated as second core. The first and the second cores are positioned such that: the respective base portions are away from each other by a predetermined distance, the projecting directions of the respective salient pole portions form a predetermined angle, and the length of the connecting wire thread from the winding end position of the first core to the winding start position of the second core is a predetermined value. The first and the second cores are respectively fixed, and the wire member is sequentially wound on the first and second cores. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a motor winding method and an apparatus for winding a motor on a stator core.
[0002]
[Prior art]
A pair of coils wound on adjacent cores of the stator may be formed by winding a single wire member around each core in the opposite direction in order to generate magnetic fields in opposite directions on adjacent cores. . Conventionally, in order to wind the wire member 2 around the first and second cores 1a and 1b adjacent to the stator in the reverse direction, a salient pole portion 4 having a projecting portion from an arc-shaped base 3 as shown in FIG. The first and second cores 1a and 1b having the concave grooves 5 and 6 formed on both side surfaces by projecting are provided with insulators 16 for covering the core end surfaces and the concave grooves 5 and 6 on the both side surfaces. , 1b are arranged in parallel, and the base 3 is clamped to a jig in the same plane. Then, the winding start wire 7 of the first core 1a is introduced into the one-side concave groove 5a from the upper end of the core 1a, and the first layer is formed in the concave grooves 5a and 6a on both sides from the base side toward the front end side of the salient pole portion. The second layer is sequentially wound from the tip side to the base side, and the winding end wire 8 of the first core 1a is led out from the other-side concave groove 6a at the core upper end surface. In order to guide the winding to the second core 1b while applying tension so that the winding end line 8 of the first core does not collapse, the winding end line 8 of the first core is provided on a motor winding device. After being hooked on the hook portion 9, the wire is led to the second core 1b as a crossover wire 10, and hooked on the hook portion 11 to change the direction to form a winding start wire 12 of the second core 1b from the upper end of the second core 1b to the other side groove. 6b and wound in a plurality of layers around the concave grooves 6b and 5b on both sides, and the winding end line 13 of the second core is led out from the one-side concave groove 5b at the core upper end surface. In FIG. 8, white circles in which the numbers are written or stacked are shown as coils, and the wire member 2 starts winding the first core 1 a from the white circle 1, winds the first core 1 a in the numerical order, and the first core 1 a is wound with the white circle 24. After finishing the winding, the second core 2b is started to be wound from the white circle 1 and wound in the numerical order, and the second core 1b is finished to be wound with the white circle 24.
[0003]
[Problems to be solved by the invention]
In the above-mentioned conventional motor winding device, hook portions 9 and 11 are required to guide the wire member 2 to the second core 1b while applying tension so that the winding end line 8 of the first core 1a does not collapse. However, since the wire member 2 is hooked on the hooks 9 and 11, the cycle time becomes long. In addition, since the crossover 10 is introduced into the second core 1b bypassing the hook portions 9 and 11, the length increases, the electric resistance increases, the motor torque is lost, and the crossover line 10 extends in the axial direction. And the amount of protrusion of the stator increases, and the axial length of the stator increases.
[0004]
SUMMARY OF THE INVENTION The present invention has been made to solve such a conventional problem, and does not provide a hook for hooking a crossover wire between the first and second cores at the time of winding. Introducing the wire into the second core while preventing the wire from collapsing.
[0005]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, a structural feature of the present invention according to claim 1 is that a stator is divided into a plurality of cores, and each core includes a base and a salient pole portion. In a winding method for a motor that continuously winds a wire member, any two cores that continuously wind the wire member are referred to as a first core, and a core that winds the wire member first is referred to as a first core. The core around which the wire member is wound is referred to as a second core, and the positional relationship between the first core and the second core is defined as follows: the bases of the first and second cores are separated by a predetermined distance; The first and second positional relations are such that the projecting direction forms a predetermined angle and the length of the crossover from the winding end position of the first core to the winding start position of the second core becomes a predetermined length. The cores are fixed respectively, and the wire members are sequentially moved to the first core and the second core. It is that the wound.
[0006]
According to a second aspect of the present invention, in the first aspect, the positional relationship between the first core and the second core is set such that the crossover line is inclined in a direction approaching a side surface of the first core. The relation is that the first and second cores are fixed respectively.
[0007]
According to a third aspect of the present invention, in the first or second aspect, the positional relationship between the first core and the second core is inclined in a direction in which the crossover approaches the side surface of the second core. The positional relationship is to fix the first and second cores respectively.
[0008]
The structural feature of the invention described in claim 4 is that, in any one of claims 1 to 3, the positional relationship between the first and second cores is determined by using the outer surface of each base portion that connects the first and second cores. The first and the second cores are arranged such that the side surface on the winding end side of the first core and the side surface on the winding start side of the second core are located on substantially the same plane. It is to fix each core.
[0009]
A structural feature of the invention according to claim 5 is that the stator is divided into a plurality of cores, and each core is wound with a wire member continuously over two or more cores of a motor having a base portion and a salient pole portion. In a winding device for a motor to be attached, any two cores for successively winding the wire member, the core for first winding the wire member is referred to as a first core, and then the core for winding the wire member. Is referred to as a second core, and a positional relationship between the first core and the second core is defined as a position where the bases of the first and second cores are separated by a predetermined distance and the protruding directions of the respective salient pole portions form a predetermined angle. Jigs for fixing the first and second cores, respectively, as a positional relationship in which the length of the crossover from the winding end position of the first core to the winding start position of the second core is a predetermined length. Provided on a base, moved relative to the jig, and 1 core, is that with the winding means to wind in order on the second core.
[0010]
According to a sixth aspect of the present invention, in the fifth aspect, in the jig, the jig determines a positional relationship between the first core and the second core, and the crossover wire is close to a side surface of the first core. The positional relationship in which the first and second cores are inclined in the directions is to fix the first and second cores respectively.
[0011]
A structural feature of the invention according to claim 7 is that, in claim 5 or 6, the jig is configured such that the jig indicates a positional relationship between the first core and the second core, and the crossover wire is on a side surface of the second core. The positional relationship inclined in the approaching direction is to fix the first and second cores respectively.
[0012]
According to an eighth aspect of the present invention, the jig according to any one of the fifth to seventh aspects, wherein the jig determines a positional relationship between the first core and the second core and the first and second cores. The rear surface is arranged such that the outer surfaces of the bases face each other, and the side surface on the winding end side of the first core and the side surface on the winding start side of the second core are positioned substantially on the same plane. Fixing the first and second cores.
[0013]
According to a ninth aspect of the present invention, there is provided the jig according to any one of the fifth to eighth aspects, wherein the first and second cores are sequentially indexed at positions facing the winding means. Was mounted on a turntable.
[0014]
According to a tenth aspect of the present invention, in the first or second aspect, the first and second cores each include an end covering portion covering the end surface, and a side covering covering the side surface. Insulator having a base-side protrusion corresponding to the base is covered, and the jig is provided with backup portions each facing the back surface of the base-side protrusion of the insulator with a small gap. That is.
[0015]
The structural feature of the invention according to claim 11 is that, according to any one of claims 5 to 10, along a line connecting the winding end position of the first core and the winding start position of the second core, That is, a guide portion for guiding the crossover is provided.
[0016]
Function and Effect of the Invention
The bases of the first and second cores are separated by a predetermined distance, the protruding directions of the salient pole portions form a predetermined angle, and the crossover line from the winding end position of the first core to the winding start position of the second core is formed. The first and second cores are fixed in a positional relationship where the length becomes a predetermined length, and the wire member is wound in the order of the first core and the second core. As a result, the crossover can be shortened, the amount of protrusion in the axial direction can be reduced, and the axial length of the stator can be shortened.
[0017]
In the invention according to claim 2 configured as described above, the positional relationship between the first core and the second core is a positional relationship in which the connecting wire is inclined in a direction approaching the side surface of the first core. Even if the wire is not hooked on the hook portion, the winding end line of the first core can be reliably prevented from being broken. Accordingly, it is not necessary to hook the crossover wire on the hook portion in order to prevent the winding end line of the first core from collapsing, so that the cycle time of the winding can be shortened and the equipment cost can be reduced. Since the portion where the crossover is hooked on the hook portion can be shortened, the electric resistance can be reduced by that much and the motor torque can be increased.
[0018]
In the invention according to claim 3 configured as described above, the positional relationship between the first core and the second core is a positional relationship in which the crossover line is inclined in a direction approaching the side surface of the second core. The winding start wire of the two cores can be smoothly and reliably introduced to the side surface of the second core.
[0019]
In the invention according to claim 4 configured as described above, the positional relationship between the first and second cores is set such that the first and second cores are arranged on the back surface such that the outer surfaces of the bases face each other, and Since the side surface on the winding end side of the core and the side surface on the winding start side of the second core are positioned substantially on the same plane, after winding on the first core, the second core is wound on the winding means. The wire member can be introduced into the side surface of the second core by setting the length of the crossover wire to a predetermined length only by relatively rotating the wire member by 180 degrees.
[0020]
In the invention according to claim 5 configured as described above, the bases of the first and second cores are separated by a predetermined distance, the protruding directions of the respective salient poles form a predetermined angle, and the winding of the first core is performed. The first and second cores are fixed to the jig in a positional relationship such that the length of the crossover from the end position to the winding start position of the second core is a predetermined length. The winding means is moved relative to the jig to wind the wire member in the order of the first core and the second core. As a result, the crossover can be shortened, the amount of protrusion in the axial direction can be reduced, and the axial length of the stator can be shortened.
[0021]
In the invention according to claim 6 configured as described above, the first and second cores are fixed to the jig in a positional relationship in which the crossover line is inclined in a direction approaching the side surface of the first core. It is possible to provide a motor winding device in which the winding end line does not collapse. Accordingly, it is not necessary to hook the crossover wire on the hooking portion in order to prevent the winding end line of the first core from collapsing, so that the cycle time of the winding can be reduced and a low-cost motor winding device can be provided. . Since the portion where the crossover is hooked on the hook portion can be shortened, the electric resistance can be reduced by that much and the motor torque can be increased.
[0022]
In the invention according to claim 7 configured as described above, the first and second cores are fixed to the jig in a positional relationship in which the crossover line is inclined in a direction approaching the side surface of the second core. It is possible to provide a motor winding device capable of smoothly and surely introducing the winding start wire of (2) into the side surface of the second core.
[0023]
In the invention according to claim 8 configured as described above, the first and second cores are arranged on the rear surface such that the outer surfaces of the respective base portions face each other, and the first core has a winding end side surface, Since the first and second cores are fixed to the jig in a positional relationship where the side surface on the winding start side of the core is located substantially on the same plane, after winding the first core, the jig is fixed to the winding means. The wire member can be introduced into the side surface of the second core by setting the length of the crossover to a predetermined length only by relatively rotating by 180 degrees.
[0024]
According to the ninth aspect of the present invention, since the jig is mounted on the turntable, the first and second cores can be quickly and sequentially divided into the positions facing the winding means with a simple configuration. Can be put out.
[0025]
In the invention according to claim 10 configured as described above, the first and second cores have an end surface covering portion covering the end surface and a side surface covering portion covering the side surface, and the base side corresponds to the base. An insulator provided with a protrusion is covered. The back surface of the base protruding portion of the insulator over the first and second cores is supported by the back-up portion, so that the tension applied to the wire member when the winding start wire is introduced from the base protruding portion to the side surface. It will not be damaged by.
[0026]
In the invention according to claim 11 configured as described above, since the guide portion for guiding the crossover along the line connecting the winding end line of the first core and the winding start line of the second core is provided, By setting the length of the connecting wire to a predetermined length, the wire member can be smoothly and reliably introduced from the first core to the second core.
[0027]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of a motor winding method and apparatus according to the present invention will be described with reference to the drawings. The motor 21 wound on the core by the motor winding method and device according to the present embodiment is applied to, for example, a rack-type electric power steering device 22. In FIG. 1, a stator 24 is fitted to a housing 23, and a rotor 25 is rotatably supported in the stator 24 by a bearing. The rotor 25 is configured such that a plurality of permanent magnets 27 are annularly fixed at predetermined intervals on an outer peripheral surface of a rotating shaft 26 that is supported by bearings on a housing 23.
[0028]
As shown in FIGS. 2 and 3, the arc-shaped bases 3 of the plurality of cores 1 constituting the stator 24 are annularly arranged in a circumferential direction around the rotation axis of the motor 21 and fitted to the housing 23. . Each core 1 has a shape in which a salient pole portion 4 protrudes from an arc-shaped base portion 3, an overhang portion is provided at the tip of the salient pole portion 4, and concave grooves 5, 6 are formed on both sides. I have. The bottom surfaces of the concave grooves 5 and 6 of the core 1 form side surfaces of the core 1. Each core 1 is covered with two insulators 16 of the same shape in half from the end faces 14, 15 to the center, and is covered with the end faces 14, 15 and the concave grooves 5, 6 on both sides. Each insulator 16 has an end surface covering portion 17 covering the end surface 14 or 15 of the core 1 and a groove covering portion 18 covering the concave grooves 5 and 6 on both sides, and the base portion 3 and the tip of the salient pole portion 4 project. A base-side protruding portion 19 and an overhang-portion-side protruding portion 20 are provided on the end face covering portion 17 corresponding to the respective portions. The groove covering portion 18 of the core 1 includes a side surface covering portion that covers the side surface of the core 1 that is the bottom surface of the grooves 5 and 6. In each core 1 covered by the two insulators 16, the coils 28 are stacked in a bale-stacked state in which the bottom surfaces of the concave grooves 5 and 6 are parallel to the direction of the rotation axis. The stator 24 is wound in a plurality of layers in a bale-stacked state that is inclined with respect to a straight line perpendicular to the radial direction and is parallel to the straight line at the other end surface 15. In FIG. 2, white circles in which a numeral is entered and stacked in a bale indicate a coil 28, the white circle 1 starts to be wound, the white circle 24 is wound in the numerical order, and the white circle 24 is the end of winding.
[0029]
As shown in FIG. 4, in order to wind the coils 28a and 28b in opposite directions around the adjacent first and second cores 1a and 1b, the wire member 2 includes a base portion of the insulator 16a covered on the first core 1a. The first core 1a is hooked on the hooking groove 30a formed in the side protruding portion 19a, and is introduced into the one side groove 5a of the first core 1a as the winding start line 7 of the first core 1a. The first layer c1 toward the side protruding portion 20a side, the second layer c2 from the overhanging portion protruding portion 20a side to the base side protruding portion 19a side, and the overhanging portion protruding portion 20a from the base side protruding portion 19a side. The third layer c3 is sequentially wound counterclockwise as viewed from the direction A in FIG. The winding end wire 8 of the first core 1a is led out from the other-side concave groove 6a, and becomes a crossover wire 10 without being hooked on a hook portion as in the related art, and the base of the insulator 16b covered on the second core 1b. It is hooked on the hooking groove 30b formed in the side protruding portion 19b and is introduced into the other side groove 6b as the winding start line 12 of the second core 1b. The winding end line 13 of the second core 1b is led out from the one-side groove 5b. The stator 24 is composed of a plurality of pairs of the adjacent first and second cores 1a and 1b on which the coils 28a and 28b of the opposite turns are wound, and the bases 3a and 3b of the cores 1a and 1b are They are arranged side by side in the circumferential direction around the rotation axis and are fitted to the housing 23.
[0030]
5 to 7, reference numeral 31 denotes a base of a motor winding device 30 for winding first and second cores 1a and 1b with coils 28a and 28b which are opposite to each other, and a table 32 is provided on the base 31. A pair of guide rails 33 are mounted so as to be movable in a horizontal plane, and are reciprocated back and forth in the X-axis direction through a ball screw mechanism driven by a servomotor 34 in a belt. A turntable 35 is mounted on the table 32 so as to be rotatable around a vertical axis, and is indexed and rotated by a servomotor 36.
[0031]
A jig 37 is fixed to the turntable 35, and a first core 1a covered with an insulator 16a is fixed to the jig 37 by clamping the base 3a, and a second core 1b covered with an insulator 16b is a first core. The base 3b is clamped and fixed at a position separated by a predetermined distance from the core 1a in a positional relationship rotated by a predetermined angle with respect to the first core 1a. In FIGS. 6 and 7, the first and second cores 1a and 1b are rotated by 180 degrees with respect to a jig 37 fixed to the turntable 35 so that the outer surfaces of the bases 3a and 3b face each other. The bases 3a and 3b are clamped and fixed.
[0032]
In order to constitute the jig 37, the upper part of the main body 38 has a cross section perpendicular to the Z axis formed in a cross shape, and each of the ridges 39a and 39b formed in the Y axis direction has a trapezoidal cross section perpendicular to the Z axis. On the upper surface, arcuate concave surfaces 40a, 40b for receiving the rear surfaces of the arcuate bases 3a, 3b are formed. Arc-shaped steps 41a and 41b are formed at the lower ends of the concave surfaces 40a and 40b, and the first and second cores 1a and 1b have the other end surfaces with the back surfaces of the bases 3a and 3b abutting against the concave surfaces 40a and 40b. 15a and 15b are seated on the steps 41a and 41b, and the end faces 14a and 14b are located slightly below the line introduction / exit end face 45 which is the upper end face of the main body 38. As a result, the first and second cores 1a and 1b have their one end faces 14a and 14b substantially aligned with the line introduction / exit end face 45 of the jig 37, and the first and second cores 1a and 1b have the upper end faces 14a and 1b. The base-side protrusions 19a, 19b and the protrusion-side protrusions 20a, 20b of the insulators 16a, 16b, which are covered from the base 14b, protrude upward from the line introduction / exit end face 45. The base-side protruding portions 19a, 19b of the insulators 16a, 16b, which cover the first and second cores 1a, 1b from the other end surfaces 15a, 15b, are held by steps provided separately below the steps 41a, 41b. You.
[0033]
Three U-shaped support members 43 are fitted into both lower halves and upper halves of both the ridges 42 formed in the X-axis direction on the upper part of the main body 38 and fixed with bolts 44 respectively. Have been. A backup member 46 is integrally fixed to the line introduction / exit end surface 45 on the upper end surface of the main body 38, and the backup member 46 is seated on the steps 41a, 41b at the other end surfaces 15a, 15b and concave on the back surface of the bases 3a, 3b. The first and second cores 1a and 1b abutting on the first and second cores 40a and 40b are respectively opposed to the back surfaces of the base-side protruding portions 19a and 19b of the insulators 16a and 16b with a minute gap. Backup surfaces 47a and 47b are formed. The first and second cores 1a, 1b are formed by the concave surfaces 40a, 40b, the steps 41a, 41b, the inclined end surfaces of both legs of the support member 43, and the lower surface of the backup member 46 facing the one end surfaces 14a, 14b of the cores 1a, 1b. Receiving portions 48a and 48b for receiving the base portions 3a and 3b are formed.
[0034]
A U-shaped clamp member 49 is fitted into the upper half of the ridge 42 on one side, and the clamp member 49 is guided by a pair of guides 50 protruding from the end surface of the ridge 42, and is opposed by the fastening bolt 51. It is moved toward and away from the support member 43. After the bases 3a and 3b of the first and second cores 1a and 1b are inserted into the receiving portions 48a and 48b in a state where the clamping bolt 51 is loosened and the clamp member 49 is retracted, the clamping bolt 51 is tightened. When the clamp member 49 is moved forward, the clamp member 49 clamps both side surfaces of the bases 3a and 3b between the inclined end surfaces of both legs between the inclined end surfaces of the opposite legs of the support member 43, and acts on both inclined surfaces. As a result, the rear surfaces of the bases 3a, 3b are pressed against the concave surfaces 40a, 40b, and the first and second cores 1a, 1b are clamped by the jig 37 by clamping the bases 3a, 3b.
[0035]
The receiving portions 48a and 48b are so arranged that the bottom surfaces of the other-side concave grooves 6a and 6b of the first and second cores 1a and 1b clamped by the jig 37 are substantially located in the same vertical plane perpendicular to the X axis. Are formed shifted in the X-axis direction. Then, along the line connecting the winding end position 52 of the coil 28a above the other concave groove 6a of the first core 1a and the winding start position 53 of the coil 28b above the other concave groove 6b of the second core 1b. A groove 54 (corresponding to a guide portion) for guiding the crossover 10 is provided on the upper surface of the backup member 46. Thereby, the positional relationship between the first core 1a and the second core 1b is changed from the winding end position 52 of the coil 28a wound on the first core 1a to the winding start position 53 of the coil 28b wound on the second core 1b. The length of the crossover wire 10 guided along 54 is a predetermined length, and its direction is the plane including the bottom surface of the one-side groove 5a of the first core 1a and the bottom surface of the other-side groove 6b of the second core 1b. Is inclined in a direction approaching a plane including
[0036]
Reference numeral 55 denotes a wire end stop which winds and stops the end of the winding start wire 7 of the coil 28a wound on the first core 1a, and is fixed to the upper surface of the main body 38 so as to be biased toward the rear surface. The winding start wire 7 of the first core 1a fixed to the wire end stopper 55 is guided by a guide member 56 fixed to the upper surface of the backup member 46, and the base side protrusion of the insulator 11a covered on the first core 1a. It is engaged with the hooking groove 30a of 19a and is introduced into the one-side groove 5a.
[0037]
On the column 57 erected on the base 31, the insulator which is relatively moved with respect to the jig 37 and has the winding start wire 7 of the first core 1 a covered on the first core 1 a on the wire introducing / exiting end surface 45 side. 16a, it is introduced into the one-side groove 5a from the base side protruding portion 19a, and is wound around the grooves 5a, 6a on both sides, and the winding end wire 8 of the first core 1a is introduced from the other-side groove 6a into the wire introduction / exit end face 45. The insulator 16b is led out to the side and is introduced into the other side groove 6b from the base side protrusion 19b of the insulator 16b covered on the second core 1b, and is wound around the grooves 6b and 5b on both sides, and the winding end line of the second core 1b is wound. There is provided a winding means 70 for leading 13 from the one-side concave groove 5b to the wire introduction / exit end face 45 side. A saddle 58 is mounted on the column 57 by a pair of rails 59 so as to be slidable in the Y-axis direction, which is at right angles to the X-axis, and is reciprocated by a servomotor 60 via a ball screw 61. A tool base 62 is guided by the rail 63 so as to be slidable in the Z-axis direction on the saddle 58. The tool base 62 is connected to a belt 68 that is rotated and moved in the Z-axis direction by a servomotor 64, and reciprocates in the Z-axis direction. Is done. At the lower end surface of the tool base 62, a tool 66 having a guide hole 65 into which the wire member 2 is loosely fitted is drilled at the end in the Y-axis direction. Reference numeral 67 denotes a bobbin around which the wire member 2 is wound. The direction of the wire member 2 pulled out from the bobbin 67 is changed by a roller 72 rotatably supported by a wire member guide 71 fixed to the base 31, and tension is applied. Appropriate tension is applied by the application device 73, and the tension is introduced into the guide hole 65 through the space between the pair of rollers 74.
[0038]
Next, the operation of the above embodiment will be described. As shown in FIG. 7, the bases 3a and 3b of the first and second cores 1a and 1b are inserted into the receiving portions 48a and 48b of the jig 37, and the clamp member 49 is tightened with the tightening bolts 51 to fix the first and second cores 1a. , 1b are clamped to a jig 37 in a rear arrangement. As shown in FIG. 5, the wire member 2 pulled out from the bobbin 67 and given an appropriate tension by the tension applying device 73 passes through the guide hole 65 of the tool 66 through the roller 74 and is wound around the wire end stopper 55. Stop and engage the guide member 56. When the motor winding device 30 is started in this state, the table 32, the saddle 58, and the tool base 62 are moved by the servomotors 34, 60, 64 based on the numerical command. The hook 16 is hooked on a hook groove 30a formed on a base side protruding portion 19a of the insulator 16a placed on the first core 1a, and is introduced into the one-side concave groove 5a of the first core 1a. At this time, since the back surface of the base-side protruding portion 19a is supported by the backup surface 47a of the backup member 46 provided on the line introduction / exit end surface 45 of the jig 37, the winding start line 7 of the first core 1a is moved to the base-side protruding portion. When being introduced into the one-side concave groove 5a from the base member 19a, the base-side protruding portion 19a is not damaged by the tension applied to the wire member 2.
[0039]
The wire member 2 introduced into the one-side concave groove 5a is the first layer c1 from the base-side protrusion 19a side to the overhang-side protrusion 20a side, and the base-side protrusion from the overhang-side protrusion 20a. The second layer c2 is wound counterclockwise in the order of the second layer c2 toward the 19a side, and the third layer c3 is sequentially wound from the base side protruding portion 19a side to the overhanging portion protruding portion 20a side. When the winding on the first core 1a is completed, the tool base 62 is temporarily stopped at an intermediate stop position where the guide hole 65 is located above the line introduction / exit end face 45 and aligned with the third layer c3 in the X-axis direction.
[0040]
The turntable 35 is rotated 180 degrees counterclockwise by the servomotor 36, and the second core 1 b faces the tool stand 62. The turntable 35 is rotated in a direction in which the other-side concave groove 6a moves away from the guide hole 65 stopped at the intermediate stop position, so that the winding end line 8 is pressed against the wire member 2 of the second layer c2, and the winding collapse is caused. Will not occur. When the turntable 35 is rotated by 180 degrees, the bottom surface of the other-side concave groove 6b of the second core 1b faces the guide hole 65.
[0041]
Then, the tool base 35 is lowered, and the wire member 2 led out from the concave groove 6a becomes the crossover 10 and is engaged with the groove 54 (guide portion) to be guided, and the insulator covered on the second core 1b. The second core 1b is introduced into the other-side groove 6b as the winding start line 12 of the second core 1b by being hooked by the hook groove 30b formed in the base-side protrusion 19b of the base 16b. The crossover wire 10 is guided by a groove 54 provided along a line connecting the winding end position 52 of the coil 28a on the first core 1a side and the winding start position 53 of the coil on the second core 1b. The member 2 has a predetermined length and is reliably introduced from the first core 1a to the second core 1b. Since the direction of the crossover line 10 is inclined in a direction approaching a plane including the bottom surface (side surface) of the one-side concave groove 5a of the first core 1a, the winding end line 8 does not collapse. Further, since the crossover wire 10 is inclined in a direction approaching a plane including the bottom surface (side surface) of the other concave groove 6b of the second core 1b, the winding start wire 12 of the second core 1b is set to the other concave portion of the second core 1b. It can be smoothly and reliably introduced into the bottom surface of the groove 6b. At this time, since the back surface of the base side protrusion 19b is supported by the backup surface 47b of the backup member 46, when the winding start line 12 of the second core 1b is introduced from the base side protrusion 19b into the other side groove 6b. Also, the base-side protruding portion 19b is not damaged by the tension applied to the wire member 2. The wire member 2 introduced into the other concave groove 6b is wound clockwise around the concave grooves 6b and 5b on both sides, and when the winding to the second core 1b is completed, the guide hole 65 is inserted into the tool base 62 by the guide hole 65. It stops at the winding end position above the end face 45 and aligned with the third layer c3 in the X-axis direction. The winding end line 13 of the second core 1b is cut, the fastening bolt 51 is loosened, the clamp member 49 is retracted, and the first and second cores 1a and 1b around which the coils 28a and 28b are wound are taken out of the jig 37. It is.
[0042]
In the above-described embodiment, the first and second cores are fixed to the jig in a rear arrangement, but a plurality of sets of the first and second cores 1a and 1b may be fixed to the jig. For example, when two sets are fixed, each core is rotated by 90 degrees, and each base is fixed to a jig in a positional relationship in which the outer surfaces of the bases 3a and 3b are at right angles.
[0043]
In the present embodiment, a so-called nozzle winding mode in which a wire member is supplied from a guide hole has been described. However, the present invention can also be applied to a case where winding is performed by flyer winding.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view showing a rack-type electric power steering device to which a motor wound on a core is applied in a motor winding device according to the present invention.
FIG. 2 is a front view of a part of a stator.
FIG. 3 is a view of the core as viewed from the side.
FIG. 4 is a diagram showing a state in which winding is performed on first and second cores.
FIG. 5 is a side view of the motor winding device.
FIG. 6 is a front view of a jig.
FIG. 7 is a view of the jig as viewed from above.
FIG. 8 is a diagram showing a conventional state of winding on first and second cores.
[Explanation of symbols]
1a, 1b: first and second cores, 2: wire members, 3, 3a, 3b: base, 4, salient poles, 5, 5a, 5b: concave grooves on one side, 6, 6a, 6b: concave on the other side Groove, 10 ... Crossover, 7, 12 ... Winding start line, 8, 13 ... Winding end line, 14 ... One end face, 15 ... Other end face, 16, 16a, 16b ... Insulator, 17 ... End face covering part, 18 ... Concave Groove covering portion, 19, 19a, 19b ... base side protruding portion, 20, 20a, 20b ... projecting portion side protruding portion, 21 ... motor, 22 ... rack type electric power steering device, 23 ... housing, 24 ... stator, 25 ... rotor, 27 ... permanent magnet, 28, 28a, 28b ... coil, 32 ... table, 34, 36, 60, 64 ... servo motor, 35 ... turntable, 37 ... jig, 38 ... body, 45 ... wire End face, 46 ... backup member, 47a, 4 b ... backup surface, 48a, 48b ... receiving unit, 49 ... clamp member, 54 ... groove, 58 ... Saddle 62 ... tool post, 65 ... guide hole, 67 ... bobbins, 68 ... belt, 73 ... tension device.

Claims (11)

In a winding method of a motor in which a stator is divided into a plurality of cores, and each core includes a base portion and a salient pole portion, a wire member is continuously wound around two or more cores. Any two cores around which the wire member is wound first are referred to as a first core, the next core around which the wire member is wound is referred to as a second core, and the first core and the second core are wound. The positional relationship with the core is such that the bases of the first and second cores are separated from each other by a predetermined distance, and the protruding directions of the salient pole portions are at a predetermined angle. The first and second cores are fixed, and the wire member is sequentially wound around the first and second cores, as a positional relationship where the length of the crossover wire toward the winding start position of the two cores is a predetermined length. A winding method for a motor, characterized in that: 2. The first and second cores according to claim 1, wherein a positional relationship between the first core and the second core is a positional relationship in which the crossover wire is inclined in a direction approaching a side surface of the first core. A motor winding method, characterized in that: 3. The first and second cores according to claim 1 or 2, wherein a positional relationship between the first core and the second core is a positional relationship in which the crossover wire is inclined in a direction approaching a side surface of the second core. A motor winding method characterized by fixing. The positional relationship between the first and second cores according to any one of claims 1 to 3, wherein the first and second cores are arranged on the back so that the outer surfaces of the bases face each other, and A motor winding method, wherein the first and second cores are fixed as a positional relationship in which a side surface on a winding end side and a side surface on a winding start side of the second core are located on substantially the same plane. . In a winding device for a motor in which a stator is divided into a plurality of cores, and each core includes a base portion and a salient pole portion, a wire member is continuously wound around two or more cores. Any two cores around which the wire member is wound first are referred to as a first core, the next core around which the wire member is wound is referred to as a second core, and the first core and the second core are wound. The positional relationship with the core is such that the bases of the first and second cores are separated from each other by a predetermined distance, and the protruding directions of the salient pole portions are at a predetermined angle. A jig for fixing the first and second cores is provided on the base as a positional relationship where the length of the crossover wire toward the winding start position of the two cores is a predetermined length, and the jig is moved relative to the jig. And winding the wire member around a first core and a second core in order. Motor winding apparatus characterized by comprising a stage. 6. The first and second jigs according to claim 5, wherein the jig defines a positional relationship between the first core and the second core as a positional relationship in which the crossover wire is inclined in a direction approaching a side surface of the first core. A motor winding device characterized by fixing cores. 7. The jig according to claim 5, wherein the jig defines a positional relationship between the first core and the second core as a positional relationship in which the crossover wire is inclined in a direction approaching a side surface of the second core. 8. A motor winding device, wherein the second cores are respectively fixed. The jig according to any one of claims 5 to 7, wherein the jig arranges a positional relationship between the first core and the second core such that the first and second cores are rear-faced such that outer surfaces of respective bases face each other, In addition, the first and second cores are fixed as a positional relationship in which a side surface on the winding end side of the first core and a side surface on the winding start side of the second core are located on substantially the same plane. Motor winding device. 9. The motor winding according to claim 5, wherein the jig is mounted on a turntable in order to sequentially index the first and second cores at positions facing the winding means. Line equipment. 10. The first and second cores according to claim 5, wherein the first and second cores include an end surface covering portion that covers the end surface and a side surface covering portion that covers the side surface. A motor winding device, wherein an insulator provided with a portion is covered, and the jig is provided with backup portions each facing the back surface of the base-side protruding portion of the insulator with a small gap. 11. The guide according to claim 5, further comprising a guide portion that guides the crossover along a line connecting a winding end position of the first core and a winding start position of the second core. 12. Motor winding device.

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