JP2007202400A - Motor parts of slot-less motor, and slot-less motor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide the motor parts of the slot-less motor and the slot-less motor using these parts realizing the slot-less motor of high efficiency by the dimension smaller than as usual. <P>SOLUTION: The motor parts 100 of the slot-less motor comprises a stator yoke 120 of the slot-less motor formed with any of an electromagnetic steel plate and a silicon steel plate or an amorphous steel plate serving as a material to be constituted by a wire rod wound in coil shape by edge-wise winding a rectangular wire with a lengthwise direction along a rolling direction, and comprises a cylindrical motor coil 110 making an outside diameter of at least both end parts 111 with an outside diameter of both the end parts 111 larger than an outside diameter of an central part 112 to insert it into the stator yoke 120. The motor part 100 are formed with an outside diameter of both the end parts 111 of the motor coil 110 larger than an inside diameter of the stator yoke 120 and an outside diameter of the central part 112 of the motor coil 110 less than an inside diameter of the stator yoke 120. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a motor component of a slotless motor and a slotless motor.

  Conventionally, a slotless motor having a configuration in which a slot is omitted is widely used along with a motor having a configuration in which a coil is wound around a winding groove (slot) formed in a rotor or a stator.

  18 (a) and 18 (b) show the configuration of the main part of such a conventional slotless motor. However, FIG. 18A is a schematic side view, and FIG. 18B is an end view. As shown in both figures, a slotless motor 1800 includes a rotor 1820 having a permanent magnet 1810 provided around it, a substantially cylindrical motor coil 1830 that houses the rotor 1820, and a substantially cylindrical type that houses the motor coil 1830. The stator yoke 1840 and a housing portion 1850 for storing these portions are provided. Although not shown, the end portion of the rotor 1820 is exposed to the outside from the housing portion 1850 and transmits the rotational force to the outside.

  In the illustrated rotor 1820, most of the shaft housed in the motor coil 1830 has a narrower shape than the other parts, and a permanent magnet 1810 is provided in the narrowed part. The permanent magnet 1810 faces the inner wall of the stator yoke 1840 with the motor coil 1830 interposed therebetween.

  Next, the configuration of the motor coil 1830 will be described with reference to FIGS.

  First, as shown in FIG. 19, the first insulated conductor 1938, the second insulated conductor 1940, and the third insulated conductor 1942 are wound around the mandrel 1958.

  Next, as shown in FIGS. 19 and 20, the first insulated conductor 1938 has a first end 1944 and a second end 1946, and the second insulated wire 1940 has a first end 1948 and a second end 1950. The third insulated conductor 1942 has a first end 1952 and a second end 1954. The mandrel 1958 has a symmetrical shape with the axis 1960 as the center.

  Next, as shown in FIG. 20, the first, second, and third insulated conductors 1938, 1940, 1942 are simultaneously in the first direction indicated by the downward arrow in FIG. The first coil unit 1964, the second coil unit 1966, and the third coil unit 1968 are respectively wound. This winding process can be performed by rotating the mandrel 1958 or by mechanically guiding each of the insulated conductors 1938, 1940, 1942 around the mandrel 1958. Thus, in FIG. 20, the first insulated conductor 1938 is wound around the mandrel 1958 in the clockwise direction to form the first coil unit 1964. The second insulated lead 1940 is also wound around the mandrel 1958 in a clockwise direction to form a second coil unit 1966. The third insulated conductor 1942 is also wound in the clockwise direction simultaneously with the winding of the first and second coil units 1964, 1966 to form a third coil unit 1968.

Each coil unit 1964, 1966, 1968 has a respective insulated conductor 1938, 1
940, 1942 is formed by winding 8-12 times around a mandrel 1958. The first, second, and third coil units 1964, 1966, 1968 form a configuration referred to as a first coil group 1962 of coils.

  Once the first group of coil units 1962 is wound, the insulated conductors 1938, 1940, 1942 are spanned over a distance of approximately twice the width of one of the coil units 1964, 1966, 1968 by a mandrel 1958. The axis 1960 is moved in the axial direction. These axial movements of the three insulated conductors 1938, 1940, 1942 are shown in FIG. 1920 as 1970, 1972, 1974, respectively. The first movement 1970 of the first insulated conductor 1938 positions the insulated conductor 1938 immediately next to the last winding of the third coil unit 1968 as shown in FIG. The first movement 1972 of the second insulated conductor 1940 is further spaced apart by approximately one coil unit width along the mandrel 1958 from where the first movement 1970 of the first conductor 1938 ends. The first movement 1974 of the conductor 1942 is further spaced apart by one coil unit along the mandrel from where the first movement 1972 of the second conductor 1940 ends. Thus, the insulated conductors 1938, 1940, 1942 are positioned to wind the second group 1976 of coil units.

  The second group 1976 composed of coil units is wound in a second direction opposite to the winding direction of the first group 1962 composed of coil units. In the configuration shown in FIG. 20, the second group 1976 of coil units is wound in the counterclockwise direction as indicated by the upward arrow. The first, second, and third insulated conductors 1938, 1940, 1942 were used to wrap the first group 62 of coil units to wrap the second group 1976 of coil units. Wind the same number of times counterclockwise at the same time. As a result, the first insulated conductor 1938 forms a fourth coil unit 1978, the second insulated conductor 1940 forms a fifth coil unit 1980, and the third insulated conductor 1942 forms a sixth coil unit 1982. Once the coil units 1978, 1980, 1982 are wound, in order to position the conductors 1938, 1940, 1942 with respect to the third group 1990 of coil units, the insulated conductors 1938, 1940, 1942 have a width of two coil units. A second move is made over an approximately equal distance.

  Thus, the first insulated lead 1938 takes a second axial adjustment 1984, the second insulated lead 1940 takes a second axial adjustment 1986, and the third insulated lead 1948 takes a second axial adjustment 1988. In order to wind the third group 1990 composed of the coil units, the insulated conductors 1938, 1940, 1942 are arranged in the direction opposite to the winding direction of the second group 1976 composed of the coil units. Wind in the same clockwise direction as the winding direction of 1962. In the illustrated configuration, the third group 1990 consisting of coil units is wound in a clockwise direction as indicated by a downward mark in FIG. The first, second, and third insulated conductors 1938, 1940, 1942 are wound at the same time as many times as the first and second coil groups 1962, 1976 are wound. As a result, the first insulated conductor 1938 forms the seventh coil unit 1992, the second insulated conductor 1940 forms the eighth coil unit 1994, and the third insulated conductor 1942 forms the ninth coil unit 1996.

At this point, the insulated conducting wires 1938, 1940, 1942 are simultaneously moved in the axial direction by a distance substantially equal to the width of two coil units. The third axial movement of the first insulated conductor 1938 is indicated by reference numeral 1998 in FIG. The third axial movement of the second insulated conductor 1940 is indicated by reference numeral 19100, and the third axial movement of the insulated conductor 1942 is indicated by reference numeral 19102 in FIG. After the insulated conductors 1938, 1940, and 1942 are once positioned in this manner, the fourth group 19104 composed of coil units is wound in the same direction as the winding direction of the second coil group 1976. In the configuration shown in FIG. 20, this is a counterclockwise wrapping, with the first insulated conductor 1938 forming the tenth coil unit 19106, the second insulated conductor 1940 forming the eleventh coil unit 19108, and the third The insulated conductor 1942 forms the twelfth coil unit 1910. After winding the fourth group of coils 19104, the second ends 1946, 1950, 1954 of the respective conductors 1938, 1940, 1942 are described in detail below after fabrication of the field coil 1924. Extend from the pre-assembled wire assembly 1936 for later connection.

  Next, as shown in FIGS. 21, 22, and 23, there is a structure in which the winding assembly 1936 can be taken out from the hexagonal mandrel 1958 without changing the shape of the coil in the winding assembly 1936 or the relationship between them. , And is affixed to the formed wire assembly 1936. Preferably, the securing structure takes the form of at least two strips of adhesive tape 19114 and 19118 that are applied longitudinally with respect to the axis of the mandrel 1958 along both outer surfaces of the winding assembly 1936. As shown in FIG. 21, a first strip 19114 of adhesive tape is applied longitudinally along one outer surface of assembly 1936. The second strip 19118 is attached to the outer surface of the winding assembly 1936 that is diametrically opposite to the outer surface to which the first strip 19114 is attached. At this point, the winding assembly 1936 is removed from the mandrel 1958.

  After removal of the winding assembly 1936 from the mandrel 1958, the insert 19122 is preferably inserted into the winding assembly 1936 as seen in FIGS. The insert 19122 is most preferably a strip formed of “B” stageable glass fibers with an epoxy coating, preferably two of the apexes of the inner periphery of the hexagonal shaped wire assembly 1936. Slightly less than the maximum distance between two vertices.

  Next, as shown in FIGS. 24 and 25, the secured rivet assembly 1936 with the insert 19122 therein is flattened to form a substantially flat bilayer web 138. This web has an axial first end 19124 formed by the first coil unit 64 and an axial second end 19128 formed by the twelfth coil unit 19110. As best shown in FIG. 25, the flat bilayer web 19138 has a first layer 19132 and a second layer 19134 opposite the first layer 19132. The core 19136 formed by the insert 19122 is positioned between the first and second layers 19132, 19134.

  As can be seen in FIG. 24, the planarization process includes a front single-layer web portion 19126 formed on the axial second end 19128 side of the web 19138 and a rear single-layer web portion 19130 in the axial first direction of the web 19138. The first layer 19132 of the web 19138 is displaced relative to the second layer 19134 with respect to the axial direction to the extent that it is formed on the end 19124 side. Preferably, this offset is, as can be seen in FIG. 24, the single-layer web portion 19126 in front of the second axial end 19128 of the web exclusively of the coil units 19106, 19108, 19110 constituting the fourth coil group 19104. It is performed to the extent that it is formed from the surrounding segments on the front side in the axial direction, that is, the leg portions 19106a, 19108a, 19110a (hereinafter referred to as the front leg portions 19106a, 19108a, 19110a), so that the rear side of the first axial end 19124 of the web The single-layer web portion 19130 is exclusively composed of peripheral segments on the rear side in the axial direction of the coil units 1964, 1966, 1968 constituting the first coil group 1962, that is, legs 1964b, 1966b, 1968b (hereinafter referred to as rear leg 1964b, (Referred to as 1966b and 1968b) Is al formation.

As a result, the front legs 1964a, 1966a, 1968a of the individual coil units 1964, 1966, 1968 in the first coil group 1962 are the fourth coils wound in the opposite direction by the front legs 1964a of the first coil unit 1964. The unit 1978 overlaps the rear leg portion 1978b of the second coil unit 1966, and the front leg portion 1966a of the second coil unit 1966 overlaps the rear leg portion 1980b of the fifth coil unit 1980 wound in the opposite direction. The portion 1968a is shifted to the extent that it overlaps the rear leg 1982b of the sixth coil unit 1982 wound in the opposite direction. Similarly, the front leg portions 1978a, 1980a, 1982a of the 4th, 5th, and 6th coil units 1978, 1980, 1982 of the second coil group 1976 are 7th, 8th, and 8th wound in opposite directions. The nine-coil units 1992, 1994, and 1996 are shifted so as to overlap the rear legs 1992b, 1994b, and 1996b, respectively. Similarly, the front legs 1992a, 1994a, 1996a of the seventh, eighth, and ninth coil units 1992, 1994, 1996 are the tenth, eleventh, and twelfth coil units 19106, 19108 wound in opposite directions. , 19110 are shifted so as to overlap the rear legs 19106b, 19108b, 19110b. Similarly, as can be seen in the assembly process shown in FIG. 26, the front legs 19106a, 19108a, 19110a of the tenth, eleventh and twelfth coil units 19106, 19108, 19110 are the first and second ends of the web 19138. When joining 19124 and 19128 to each other, they are shifted so as to finally overlap the rear legs 1964b, 1966b and 1968b of the first, second and third coil units 1964, 1966 and 1968 wound in opposite directions. ing.

  As a result, when the ends 19124 and 19128 of the web 19138 are joined to each other, each of the front legs 1964a, 1978a, 1992a, and 19106a around which the first insulated conductor 38 is wound is wound around the first insulated conductor 1938. It overlaps with the rear leg portions 1978b, 1992b, 19106b and 1964b of the coil unit wound in the next continuous opposite direction. Each of the front legs 1966a, 1980a, 1994a, 19108a around which the second insulated conductor 1940 is wound is a rear leg 1980b around the coil unit wound in the next continuous opposite direction around which the second insulated conductor 1940 is wound. , 1994b, 19108b, 1966b. Similarly, each of the front legs 1968a, 1982a, 1996a, 19110a around which the third insulated conductor 1942 is wound is arranged on the rear side of the coil unit wound in the next continuous opposite direction around which the third insulated conductor 1942 is wound. It overlaps with the legs 1982b, 1996b, 19110b, 1968b. As a result, the currents of the legs of the overlapping coil units flow in the same direction, and as a result, mutually reinforcing electromagnetic fields that do not affect the respective actions are obtained. Note that this occurs regardless of the particular wire connection configuration applied to the winding.

  Further, as shown in FIG. 26, the front single-layer web portion 19126 at the second axial end 19128 of the flat web 19138 overlaps the rear single-layer web portion 19130 at the first axial end 19124. The flat web 19138 is rolled to face the ends. As a result, a motor coil 1830 having a cylindrical shape is produced. However, as shown in FIG. 22, when the conductor 19 is folded with the insert 19122 as a corner, an excessive thickness is generated, and the thickness of both end portions is actually thicker than that of the central portion.

  Finally, as shown in FIG. 27, the motor coil 1830 is inserted into a cylindrical space formed by the inner wall of the stator core 1840.

  In the above configuration, since both ends 1831 of the motor coil 1830 are formed by folding the conductors that constitute the motor coil with the insert 19122 as a corner, the windings are folded. The outer diameter is larger than that of the central portion 1832 that is not provided.

  Further, the stator yoke 1840 is formed by punching the non-oriented electrical steel plate 1841 shown in FIG. 28 (a) and forming an annular yoke material 1842 shown in FIG. 28 (b) as shown in FIG. 28 (c). It is created by aligning and stacking the desired number of plates.

In the slotless motor having the above-described configuration, the motor coil 1830 is uniformly disposed along the rotation circumference of the rotor 1820, and the rotor 1820 receives a uniform magnetic attractive force regardless of the position. Cogging does not occur, torque unevenness and rotation unevenness characteristics are not adversely affected, and the characteristics are higher than a motor having a slot.
Japanese Patent No. 2799395

  However, such a conventional slotless motor has the following problems. As already described, both end portions 1831 of the motor coil 1830 have an increased diameter as compared with the central portion 1832 that does not have the conductor folded because the conductor folded portions overlap each other.

  Therefore, the inner diameter of the stator yoke 1840 into which the motor coil 1830 is inserted needs to be greater than or equal to the outer diameter of both end portions 1831.

  In this case, as shown in FIG. 18A, a gap 1860 is formed between the outer wall of the central portion 1832 of the motor coil and the inner wall of the stator yoke 1840, and this gap 1860 reduces the efficiency of the motor. In FIG. 18B, the gap 1860 is indicated by a hatched portion.

  The present invention has been made in view of the above problems, and provides a motor component of a slotless motor and a slotless motor using the same, which realize a highly efficient slotless motor with a smaller size than conventional ones. With the goal.

In order to achieve the above object, the first aspect of the present invention uses a magnetic steel sheet, a silicon steel sheet, or an amorphous sheet as a material, and forms a coil by edgewise winding a rectangular wire whose longitudinal direction is along the rolling direction. A stator yoke of a slotless motor composed of a wire wound around
The outer diameter of at least both ends is larger than the outer diameter of the central portion, and the central portion includes a cylindrical motor coil inserted into the stator yoke,
The outer diameter of the both end portions of the motor coil is larger than the inner diameter of the stator yoke, and the outer diameter of the central portion of the motor coil is equal to or smaller than the inner diameter of the stator yoke,
It is a motor component of a slotless motor in which the inner diameter of the both end portions is equal to the inner diameter of the central portion.

The second aspect of the present invention is a motor component of the slotless motor of the first aspect of the present invention;
A slotless motor including the stator yoke and a storage portion for storing the motor coil.

In addition, according to the third aspect of the present invention, a part of the inner wall of the storage portion has a thickness that is thinner than other parts.
The slotless motor according to the second aspect of the present invention, wherein the motor coil is fixed in the housing portion by fitting the stator yoke to a part of the inner wall whose thickness is thinner than other parts. It is.

  ADVANTAGE OF THE INVENTION According to this invention, the motor component of a slotless motor which implement | achieves a highly efficient slotless motor with a dimension smaller than before, for example, and a slotless motor using the same can be provided.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
FIGS. 1A and 1B are diagrams showing the configuration of the motor component according to Embodiment 1 of the present invention. 1A is a sectional view in the rotor direction, and FIG. 1B is a side view.

  As shown in FIGS. 1A and 1B, the motor component 100 of the present invention includes a motor coil 110 and a stator yoke 120 that is configured by a wire wound in a coil shape and is attached to the motor coil 110. ing.

  The rough shape of the stator yoke 120 is a cylindrical shape as in the conventional stator yoke 1840, but the dimensions of the inner diameter and the outer diameter are different as will be described later. On the other hand, the motor coil 110 has the same shape as a conventional cylindrical motor coil, and has both end portions 111 and a center portion 112 having different outer diameters. Greater than that.

  Next, the configuration of the stator yoke 120 is shown in the side view of FIG. As shown in FIG. 2, the stator yoke 120 is formed by winding a single rectangular wire into a cylindrical coil shape by edgewise winding so that the end surfaces thereof are adjacent to each other and the main surfaces are in contact with each other. The inner peripheral surface of the winding indicated by the broken line in the figure forms the inner peripheral surface of the yoke as it is. Further, the flat wire is cut out from a magnetic steel sheet whose longitudinal direction is the rolling direction.

When a slotless motor is created using the motor component 100 of the present embodiment having such a configuration, a configuration as shown in FIGS. 3A and 3B is obtained. However, FIG. 3A is a front view of the main part, and FIG. 3B is a side view.

  As shown in FIGS. 3A and 3B, in the slotless motor 200, the stator yoke 120 has an inner diameter smaller than the outer diameter of both end portions 111 of the motor coil 110 and substantially the same as the outer diameter of the central portion 112. Are the same. Therefore, the inner peripheral surface of the stator yoke 120 and the outer peripheral surface of the central portion 112 of the motor coil 110 are substantially in contact with each other, and no gap is generated as in the conventional slotless motor. Thereby, the efficiency of the motor can be kept high. In FIG. 3, the same or corresponding parts as in FIG. 18 are denoted by the same reference numerals, and detailed description thereof is omitted.

  Furthermore, according to the present embodiment, the following effects can be obtained. That is, the steel plate used for the yoke material 1842 of the conventional stator yoke is a non-oriented electrical steel plate, which is referred to as non-directional, but actually is not completely non-directional, and is not magnetized in the rolling direction. Is superior to the perpendicular magnetization characteristics. When a stator yoke is made by stacking yoke materials using this non-oriented electrical steel sheet, the rotating magnetic field is distorted due to the difference in magnetization characteristics depending on the direction.

  On the other hand, in the stator yoke 120 of the present embodiment, the wire is elongated from an electromagnetic steel plate having the rolling direction as the longitudinal direction, and is configured by winding the wire in an edgewise coil shape. Thus, the magnetic characteristics are the same everywhere in the circumferential direction. Also, the magnetic characteristics in the radial direction are the same everywhere. Therefore, the variation in magnetic properties due to the location due to the directionality of the steel plate of the material is eliminated, and the generation of a good rotating magnetic field can be expected. In the above description, the rectangular wire cut out from the magnetic steel sheet having the rolling direction as the longitudinal direction is used as the wire, but the magnetic steel sheet is not necessarily used, and amorphous may be used as the material. Further, the cross-sectional shape is not rectangular but may be a circle, an ellipse, or an ellipse.

  Next, another configuration example of the slotless motor using the motor component 100 of the present embodiment is shown in FIGS. However, Fig.4 (a) is a principal part front view, FIG.4 (b) is a side view.

  As shown in the figure, the configuration of the motor component 100 is the same as the configuration shown in FIGS. 3A and 3B, but a part of the inner wall of the housing portion 210 that houses the motor component 100 is thinner than other portions. There is a portion, and only the portion of the stator yoke 120 is thinned, and the outer surface of the stator yoke 120 is fitted to the thinned portion. By this fitting, the motor coil 110 is also fixed in the housing part 210.

  With such a configuration, when the dimensions of the motor component 100 are the same, there is an advantage that the housing unit 210 can be made smaller than the configuration example shown in FIG.

  Next, a method for manufacturing such a slotless motor will be described. The yoke material that is the basis of the stator yoke 120 and the motor coil material that is the basis of the motor coil 110 are assembled into the configuration of the motor component 100 (note that the assembling method will be described in a later embodiment). A part of the thickness corresponding to the housing part 210 is inserted into a storage body having an inner wall whose thickness is thinner than other parts. At this time, the outer diameter of the yoke material is made slightly smaller than the inner diameter of the storage body.

  Further, the yoke material and the thin part of the inner wall of the storage body can be arranged at positions facing each other. At this time, since it is difficult to visually check the position of the yoke material from the outside of the storage body, it is desirable to set the insertion position of the yoke material according to the wall of the storage body in advance.

  As shown in FIG. 5, when the alignment of the yoke material 220 and the inner wall of the housing 250 is completed, the expansion device is inserted into the motor coil material 230 and the diameter of the expansion device is increased, thereby the motor coil material 230. Is increased along with the diameter of the yoke material 220.

  As a result, the outer wall of the yoke material 220 is fitted into the thin portion 240 of the inner wall of the storage body, and the motor coil material 230 and the yoke material 220 are fixed in the storage body 250.

  The motor coil material 230 having an enlarged diameter is completed as the motor coil 110, and the yoke material 220 having an enlarged diameter is also completed as the stator yoke 120. That is, the motor component 100 is completed in the storage body 250.

  Here, as the expansion instrument, as shown in FIGS. 5 and 6, a plurality of rod members 262 in which cones 261 are inserted in a wedge shape at both ends are used. Both ends of the rod member 262 are provided with an inclination corresponding to the cone 261. When the cone 261 is inserted in the direction of the arrow in the figure, each rod member slides along the ridge of the cone 261. The inner diameter of the motor coil 110 is expanded by moving and moving away from each other.

  In addition to this, as shown in FIG. 7, a cylindrical balloon 272 having a hollow portion 271 made of a stretchable member such as silicon rubber may be used as the expansion device. As shown in FIG. 8, the cylindrical balloon 272 is expanded in diameter by introducing air or oil from one end and pushes the inner diameter of the motor coil 110.

  In addition, since the expansion device which consists of the some rod member 262 and the cone 261 and the cylindrical balloon 272 also have the shape of an axial object, the detail of the shape was abbreviate | omitted illustration.

(Embodiment 2)
As shown in FIG. 28 (c), the conventional stator yoke is composed of laminated annular yoke material 1842, and the outer diameter and inner diameter of the steel yoke material 1842 can be changed unless reworked. Since this is not possible, the outer diameter and inner diameter of the stator yoke are also fixed. Therefore, as shown in FIGS. 18A and 18B, in order to insert the motor coil into the stator yoke 1840, the inner diameter of the stator yoke is inevitably larger than the outer diameter of both end portions 1831 of the motor coil 1830. It was necessary and a gap 1860 could not be avoided.

  On the other hand, the stator yoke 120 according to the first embodiment described above is formed of a cylindrical coil-shaped wire, so that the inner diameter of the stator yoke 120 can be made smaller than the outer diameter of both end portions 111 of the motor coil 110. It can be inserted into the motor coil 110. Hereinafter, as a second embodiment of the present invention, a motor component manufacturing apparatus and a manufacturing method for inserting the stator yoke 120 of the first embodiment into the motor coil 110 will be described.

  FIG. 9 is a diagram illustrating a configuration of a motor component manufacturing apparatus according to the second embodiment. As shown in FIG. 9, in the motor component manufacturing apparatus 900, the motor coil mounting jig 910 is a means for holding the motor coil 110, the yoke material forming portion 920 is a means for forming a yoke material 940, which will be described later, and a support 930. Is a means for fixing the motor coil mounting jig 910 and the yoke material forming portion 920 at predetermined positions, and the pedestal 980 is a means for fixing the support 930 and arranging the motor component manufacturing apparatus 900 at a desired location. .

10A, the motor coil mounting jig 910 includes a rotation shaft 911 provided with four slits, a fixture 912 that fixes the rotation shaft 911 to the support 930, It has a wire end fixing part 913 for fixing the end 941 of the wire of the yoke material 940 into which the rotation shaft 911 is inserted. The fixture 912 has a hole 810 that is connected to a rotation means (not shown) and is connected to a shaft 800 having an integral structure coaxial with the rotation shaft 911. As will be described later, the rotation shaft 911 has an outer diameter that is about 0.2 to 0.4 mm larger than the inner diameter of the motor coil 110. In addition, the wire end fixing portion 913 is fixed by a fixing screw 913b, which will be described later, at a location where no slit is provided at the end of the rotation shaft 911.

  In addition, in FIG.10 (c), the structure of the wire end fixing | fixed part 913 single-piece | unit is shown. The wire end fixing portion 913 includes a hole 913a through which the rotation shaft 911 passes, a fixing screw 913b provided on a side surface of the hole 913a, an insertion slit 913c for inserting the wire, and a fixing screw 913d for adjusting the width of the insertion slit 913c. And.

  Further, as shown in FIG. 9, the yoke material forming portion 920 incorporates a spline shaft 921 provided so as to be parallel to the rotation shaft 911 and a ball (not shown) for sliding the spline shaft 921. In addition, a spline fixing portion 922 fixed to the support 930 and a yoke material forming body 923 for forming the outer surface of the yoke material 940 provided at the tip of the spline shaft 921 are provided. Since the spline shaft 921 slides on the spline fixing portion 922, the yoke material forming portion 920 can move in the extending direction of the spline shaft 921.

  Here, FIGS. 11A to 11C show the configuration of the yoke material molding main body 923. FIG. However, Fig.11 (a) is a front view, FIG.11 (b) is a side view, FIG.11 (c) is a fragmentary sectional view.

  As shown in each figure, the yoke material molding main body 923 fixes the pair of scissors 924a and 924b and the scissors 924a and 924b that can be opened and closed so as to be sandwiched between the yoke material 940 attached to the motor coil 110. A fixed arm 925 and a connection arm 926 that connects the fixed arm 925 and the spline shaft 921 are provided.

  The fixed arm 925 includes fixing pins 927a and 927b that rotatably fix the scissors 924a and 924b, and the scissors 924a and 924b can rotate about the fixing pins 927a and 927b, respectively.

  Further, the scissors 924a and 924b are connected by a spring 928, and keep the closed state as shown in FIG. 11A by the restoring force of the spring 928 unless an external force is applied. As shown in FIG. 11B, since the inner wall of the scissors 924a and 924b is bent corresponding to the outer surface of the yoke material 940, a gap that can accommodate the yoke material 940 is formed in the closed state. . Further, as shown in FIGS. 11 (b) and 11 (c), contact portions 929 made of a soft material such as rubber or resin are provided on the edge portions of the scissors portions 924a and 924b that come into contact with the yoke material 940, for example. Is provided.

  In the above configuration, the motor coil mounting jig 910 corresponds to the insertion means of the invention related to the present invention, and the yoke material forming portion 920, the wire end fixing portion 913, and the rotating shaft 911 are related to the present invention. It corresponds to the adjusting means of the invention.

  The operation of the motor component manufacturing apparatus 900 having the above-described configuration will be described, and an embodiment of the motor component manufacturing method of the invention related to the present invention will be described.

As a preparation, the yoke material 940 and the motor coil 110 are attached to the manufacturing apparatus as follows. The motor coil 110 is attached to the motor coil attachment jig 910 while the motor coil attachment jig 910 is attached to the support 930. That is, the motor coil 110 is inserted into the rotating shaft 911 and pushed in until it hits the wire end fixing portion 913. Since the rotating shaft 911 has four slits, when the motor coil 110 is inserted, the inner diameter of the rotating shaft 911 is slightly reduced by the elastic force, and the motor coil 110 is rotated by the restoring force. It is fixed to the moving shaft 911.

  Next, the yoke material 940 is attached to the motor coil 110. Here, as shown in FIG. 9, the yoke material 940 has a larger outer diameter and inner diameter than the stator yoke 120 of the first embodiment. The inner diameter of the yoke material is larger than the outer diameter of both end portions 111 of the motor coil 110. Further, the length is shorter than that of the stator yoke 120. However, the wall thickness determined by the lateral width of the wire is the same as that of the stator yoke 120. Therefore, the yoke material 940 can be attached to the motor coil with a considerable margin.

  Further, a part of the wire 94 at the edge 942 near the wire end fixing portion 913 of the yoke material 940 attached to the motor coil 110 is unrolled to form an end 941, which is fixed by the wire end fixing 913.

  Next, the spline shaft 921 with the yoke material forming portion 920 attached is moved, and a force in the direction of the white arrow in the figure is applied to the portions of the scissors 924a and 924b close to the connecting arm 926. Open the portions 924a and 924b, store the yoke material 940 in the scissors 924a and 924b, and stop applying force when the contact portion 929 reaches the edge portion 942 near the wire end fixing portion 913 of the yoke material 940. The edge 942 is sandwiched between the scissors 924a and 924b by the restoring force of the spring 928. At this time, the contact portion 929 is in direct contact with the edge portion 942 so that the edge portion 942 is pressurized.

  After the above setting is completed, the rotating shaft 911 is rotated in the winding direction of the wire of the yoke material 940 by external power (not shown).

  The rotation of the rotation shaft 911 causes the motor coil 110 fixed to the rotation shaft 911 to rotate, and the yoke material 940 inserted into the motor coil 110 also rotates.

At this time, each wire forming the coiled winding of the yoke material 940 is included in the edge portion 942 sandwiched between the scissors 924a and 924b. Further, the end 941 of the yoke material 940 extending from the edge portion 942 is fixed by the wire end fixing portion 913.
Therefore, when the motor coil 110 rotates, the wire of the yoke material 940 is pulled along the winding direction to the contact portion 929 of the scissors 924a and 924b with the edge portion 942 as a fixed end, and the yoke material 940 is wound. Twisted in the direction of winding. Further, since the yoke material 940 has a spiral groove formed by winding the wire, and the contact portion 929 is fitted into this groove, the scissors 924a and 924b follow the groove according to the rotation of the yoke material 940. Move.

  Therefore, when the motor coil 110 rotates, the yoke material forming body 923 tightens the yoke material 940 so that the winding of the wire becomes hard, and the yoke material forming portion 920 as a whole moves away from the motor coil 110 together with the spline shaft 921. Moving. As shown in the sectional view of FIG. 11C, the above operation reduces both the inner and outer diameters of the yoke material 940 in contact with the contact portion 929, and the inner diameter is reduced at both ends of the motor coil 110. It is smaller than the outer diameter and substantially coincides with the outer diameter of the central portion. On the other hand, the length of the reduced diameter portion becomes longer.

Further, the motor coil 110 is continuously rotated until the contact portion 929 of the scissors 924 a and 924 b reaches the other end of the yoke material 940. When the rotation of the motor coil 110 is stopped, the inner diameter of the yoke material 940 substantially matches the outer diameter of the central portion of the motor coil 110, and the inner surface of the yoke material 940 substantially contacts the outer surface of the motor coil 110. In other words, the dimensions of the yoke material 940 coincide with the stator yoke 120 when completed. In this state, the yoke material 940 is completed as the stator yoke 120 by fixing the outer surface of the yoke material 940 with an adhesive or the like and keeping the winding of the wire from returning due to a spring back or the like. At this time, the end 941 of the wire rod of the yoke material 940 is cut at a desired position.

  Since the completed stator yoke 120 is inserted into the central portion 112 of the motor coil 110, the motor component 100 of the first embodiment is obtained simultaneously with the completion of the stator yoke 120.

  As described above, according to the present embodiment, a wire wound in a coil shape and having an inner diameter larger than the outer diameter of both end portions 111 of the motor coil 110 is used as the yoke material. Is inserted into the center of the motor coil, and then twisted in the same direction as the coiled winding to tighten the winding so that the length is increased, so that the inner diameter is the outer diameter of both ends of the motor coil. By making the adjustment to be smaller and molding the yoke material to the same dimensions as the stator yoke, the motor component of the first embodiment can be easily manufactured.

  In the above description, the pair of scissors of the yoke material molding body 923 is a pair, but two or more pairs may be used. Moreover, what consists of three and five may be sufficient. In short, any configuration may be used as long as the yoke material 940 can be pressed from the end portion thereof with a predetermined force.

  In the above description, the yoke material 940 has been described as having a larger inner diameter than the outer diameter of both end portions 111 of the motor coil 110. However, the yoke material according to the present invention is the same as that of the stator yoke 120. It is good also as what has the same dimension. The manufacturing apparatus in this case is shown in FIG. In addition, the same code | symbol is attached | subjected to FIG. 9-11 same part or an equivalent part, and detailed description is abbreviate | omitted. In this configuration, unlike the configuration shown in FIG. 9, the yoke material molding main body 923 has a configuration in which the connecting arm 926 is not provided and the yoke material is rotated by external force. The yoke material molding body 923 that rotates by external force corresponds to the adjusting means of the invention related to the present invention.

  The operation is as follows. That is, after the yoke material 950 having the same dimensions as the stator yoke 120 is inserted into the scissors 924a and 924b, the yoke material molding main body 923 is rotated in the direction opposite to the winding direction of the wire of the yoke material 950. The wire of the yoke material 950 is pulled along the direction opposite to the winding direction to the contact portion 929 of the scissors 924a and 924b with the end portion 951 as a fixed end, and the yoke material 950 is opposite to the winding direction of the winding. Twisted in the direction of.

  Therefore, the yoke material 950 is tightened so that the winding of the wire becomes loose, and both the inner diameter and the outer diameter of the yoke material 950 are enlarged, while the length of the portion where the diameter is enlarged is shortened.

  Next, as shown in FIG. 12, when the inner diameter of the yoke material 950 becomes larger than the outer diameter of the both end portions 111 of the motor coil 110, the rotation of the yoke material forming body 923 is stopped, and the inner diameter of the yoke material 950 is reduced. Temporarily fixed in an enlarged state, and the motor coil 110 is inserted therein.

  Next, the yoke material forming body 923 is rotated in the reverse direction, and the yoke material 950 is twisted in the direction of the winding direction. The yoke material 950 is tightened so that the winding of the wire becomes hard, and the inner diameter, the outer diameter, and the length of the yoke material 950 are restored to the same dimensions as the stator yoke before molding, and the motor component of the first embodiment is completed. Is done.

  Note that the holding of the scissors 924a and 924b may be manually released instead of rotating the yoke material forming body 923 in the reverse direction. In this case, the yoke material 950 is spring-backed and restored to the dimensions before molding.

(Embodiment 3)
Next, as a third embodiment, another example of a motor component manufacturing apparatus and a manufacturing method for inserting the stator yoke 120 of the first embodiment into the motor coil 110 will be described.

  FIG. 13 is a diagram illustrating a configuration of a motor component manufacturing apparatus according to the third embodiment. As shown in FIG. 13, in the motor component manufacturing apparatus 1000, the motor coil mounting jig 910 is a means for holding the motor coil 110, the yoke material holding portion 960 is a means for holding the yoke material 950, and the support 930 is a motor coil. A base 980 is a means for fixing the mounting jig 910 and the yoke material holding portion 960 at predetermined positions, and a base 980 is a means for fixing the support body 930 and arranging the motor component manufacturing apparatus 1000 at a desired location.

  Further, the configuration of the motor coil mounting jig 910 is the same as that of the second embodiment, and as shown in FIG. 10A, the motor coil mounting jig 910 is rotated with four slits. A shaft 911, a fixture 912 that fixes the rotating shaft 911 to the support 930, and a wire end fixing portion 913 that fixes the end 941 of the wire rod of the yoke material 940 in which the rotating shaft 911 is inserted. is doing. The fixture 912 has a hole 810 that is connected to a rotation means (not shown) and is connected to a shaft 800 having an integral structure coaxial with the rotation shaft 911. As will be described later, the rotation shaft 911 has an outer diameter that is about 0.2 to 0.4 mm larger than the inner diameter of the motor coil 110. In addition, the wire end fixing portion 913 is fixed by a fixing screw 913b, which will be described later, at a location where the slit at the end of the rotating shaft 911 is not provided. Further, the configuration of the wire end fixing portion 913 is the same as that shown in FIG. 10C, and detailed description thereof is omitted.

  As shown in FIG. 14, the yoke material holding portion 960 includes a spline shaft 961 provided so as to be parallel to the rotation shaft 911 and a ball for sliding the spline shaft 961 (not shown). ) And a spline fixing portion 962 fixed to the support body 930 and a cylindrical yoke material mounting portion 963 provided at the tip of the spline shaft 961 and capable of mounting a yoke material. Since the spline shaft 961 slides on the spline fixing portion 962, the yoke material mounting portion 963 can move in the extending direction of the spline shaft 961. Further, the shaft portion of the yoke material mounting portion 963 and the rotating shaft 911 of the motor coil mounting jig 910 are arranged so as to be in a positional relationship that is substantially orthogonal on the same plane.

  In the above configuration, the support 930, the yoke material holding portion 960, and the motor coil mounting jig 910 correspond to the arrangement means of the invention related to the present invention, and the wire rod end fixing portion 913 and the rotating shaft 911 are the main ones. It corresponds to the forming means of the invention related to the invention.

  The operation of the motor component manufacturing apparatus 1000 having the above-described configuration will be described, and an embodiment of the motor component manufacturing method of the invention related to the present invention will be described.

  As a preparation, the yoke material 950 and the motor coil 110 are attached to the manufacturing apparatus as follows. A yoke material 950 is attached to the yoke material holding portion 960. That is, the yoke material 950 is mounted on the yoke material mounting portion 963 of the yoke material holding portion 960 while the motor coil mounting jig 910 and the yoke material holding portion 960 are mounted on the support 930. At this time, although omitted in FIG. 13, the mounted yoke material 950 is supported by the user by hand so as not to fall off the yoke material mounting portion 963.

  Further, unlike the yoke material 940 of the second embodiment, the yoke material 950 of the present embodiment has the same dimensions as the stator yoke of the first embodiment.

  Next, the motor coil 110 is attached to the motor coil attachment jig 910. That is, the motor coil 110 is inserted into the rotating shaft 911 and pushed in until it hits the wire end fixing portion 913. Since the rotating shaft 911 has four slits, when the motor coil 110 is inserted, the inner diameter of the rotating shaft 911 is slightly reduced by the elastic force, and the motor coil 110 is rotated by the restoring force. It is fixed to the moving shaft 911.

  Next, the spline shaft 961 is moved and arranged near the wire end fixing portion 913 of the motor coil 110, and a part of the wire at the end of the yoke material 950 is unwound to prepare an end 951 of the wire as a preliminary winding. Wrapping around the central portion 112 of the motor coil 110 leaving a half. At this time, the preliminary winding direction is set to be the same as the winding direction of the yoke material 950. The end portion 951 remaining without being wound is fixed by the wire end fixing portion 913. When the end 951 is fixed, the user may release his / her hand from the yoke material 950 attached to the yoke material attaching portion 963.

  Here, the arrangement of the yoke material 950 and the motor coil 110 is schematically shown in the front view of FIG. 15A and the side view of FIG. As shown in each figure, based on the positional relationship between the yoke material mounting portion 963 and the rotation shaft 911, the end surface of the yoke material 950 and the end surface of the motor coil 110 are arranged substantially orthogonally on the same surface. ing.

  After the above setting is completed, the rotating shaft 911 is rotated in the temporary winding direction by external power (not shown).

  By the rotation of the rotation shaft 911, the wire is continuously wound around the motor coil 110 from the temporarily wound state. The yoke material 950, which is the source of the wire taken up by the motor coil 110, rotates in the winding direction. However, the yoke material 950 is not fixed to the yoke material mounting portion 963, so that it is not tightened to the shaft portion. The wire rod is sent out while rotating by itself. As shown in FIG. 16, as the number of windings of the wire wound around the motor coil 110 increases, the yoke material holding portion 960 moves along the spline shaft 961 in the right direction in the figure, and the yoke material 950 viewed from the starting position of winding. The feeding position of the wire from is changed.

  Here, the arrangement of the yoke material 950 and the motor coil 110 during the winding operation is schematically shown in the front view of FIG. 17A, the side view of FIG. 17B, and the top view of FIG. As shown in each figure, since the end surface of the yoke material 950 maintains an orthogonal relationship with the end surface of the motor coil 110, the wire that has been unwound from the yoke material 950 is the crossing part from the yoke material 950 to the motor coil 110. After being substantially twisted by 90 °, the motor coil 110 is wound. This torsional deformation occurs in a direction perpendicular to the main surface of the rectangular wire, that is, in a plane orthogonal to the winding direction of the wire, so that it is against the plastic deformation of the coiled winding occurring on the main surface of the rectangular wire. Does not affect. In addition, the winding direction of the wire is the same on the yoke material 950 side and the motor coil 110 side, and the wire material is stressed against the coiled winding direction at the time of making the yoke material 950 even in the plane direction of the flat wire. Not added.

  Therefore, the wire is wound around the central portion 112 while maintaining the form of plastic deformation that forms the coiled winding of the yoke material 950, and is the same as that of the yoke material 950 without causing a springback or the like. The coil-shaped winding is reproduced on the motor coil 110.

  Finally, fixing of the wire after completion of winding is performed in the same manner as in the second embodiment, and the motor material of the first embodiment can be obtained by completing the yoke material 950 as a stator yoke. . As in the second embodiment, the end portion 951 of the wire material of the yoke material 950 is cut at a desired position.

  As described above, according to the present embodiment, the coiled winding yoke material 950 is wound around the motor coil while substantially maintaining the winding state, so that the motor component of the first embodiment can be obtained. Can be easily created. In particular, in the case of the present embodiment, the yoke material 950 and the completed stator yoke 120 can be formed with the same dimensions, so that it is possible to save time and troubles such as fine adjustment of dimension alignment when the stator yoke is completed, and work efficiency is improved. The effect of improving is also obtained.

  In the above description, the end surface of the yoke material 950 and the end surface of the motor coil 110 are wound up in a substantially perpendicular arrangement on the same surface. The positional relationship between the end faces of 110 is not necessarily orthogonal. The wire material unzipped from the yoke material 950 is deformed so as to be twisted by a predetermined angle in a plane perpendicular to the winding direction of the wire material at the connecting portion from the yoke material 950 to the motor coil 110, and then wound around the motor coil 110. The arrangement should be such that it can be taken. In short, the wire material unwound from the yoke material 950 is wound around the motor coil 110 after being deformed so as not to affect the plastic deformation of the coiled winding generated on the main surface of the flat wire. Such an arrangement may be used.

  Further, if it is possible to affect the plastic deformation of the coiled winding occurring on the main surface of the flat wire, the wire material at the transition portion from the yoke material 950 to the motor coil 110 is straightened. You may arrange | position so that it may wind up by the motor coil 110 later. In this case, there is an effect that the degree of freedom in designing the arrangement means of the manufacturing apparatus can be increased.

  In each of the above embodiments, the shape of the wire used for the stator yoke 120 is a flat wire, but the wire of the present invention is not limited by the cross-sectional shape. A round line, a square line, etc. may be sufficient. The cross section may be a circle, an ellipse, an ellipse, or the like. Moreover, although the material of the wire is a steel material that is an electromagnetic steel plate, it may be a silicon steel plate, an amorphous material, or the like.

  Further, in each of the above embodiments, the present invention has been described as relating to a motor component of a slotless motor and a slotless motor. However, the slotless motor is a generator that generates electric power by the rotation of the rotor in the same configuration. Can be used as Therefore, the slotless motor of the present invention can be implemented as a slotless generator as it is, and this is also included in the present invention. The stator yoke and motor parts of the present invention can also be implemented as they are as a stator yoke and motor parts for a slotless generator, and are included in the present invention.

  The slotless motor component and the slotless motor according to the present invention have an effect of, for example, realizing a highly efficient slotless motor with a smaller size than the conventional one, and are useful as a slotless motor component and a slotless motor. .

(A) Sectional view in the rotor direction of the motor component in Embodiment 1 of the present invention (b) Side view of the motor component in Embodiment 1 of the present invention Configuration diagram of stator yoke according to Embodiment 1 of the present invention (A) Front view of main part of slotless motor according to embodiment 1 of the present invention (b) Side view of slotless motor according to embodiment 1 of the present invention (A) Front view of main part of another configuration example of slotless motor according to embodiment 1 of the present invention (b) Side view of another configuration example of slotless motor according to embodiment 1 of the present invention The figure for demonstrating the manufacturing method of the slotless motor in Embodiment 1 of this invention The figure for demonstrating an example of the expansion tool used for the manufacturing method of the slotless motor in Embodiment 1 of this invention. The figure for demonstrating the other example of the manufacturing method of the slotless motor in Embodiment 1 of this invention. The figure for demonstrating another example of the expansion tool used for the manufacturing method of the slotless motor in Embodiment 1 of this invention. The figure which shows the structure of the manufacturing apparatus of the motor components in Embodiment 2 of this invention. (A) The figure which shows the structure of the motor coil attachment jig 910 in Embodiment 2 of this invention (b) The figure which shows the structure of the rotating shaft 911 of the motor coil attachment jig 910 (c) The motor coil attachment jig 910 The figure which shows the structure of wire rod edge part fixing | fixed part 913 of (A) Front view showing the configuration of the yoke material molding main body 923 according to the second embodiment of the present invention (b) Side view showing the configuration of the yoke material molding main body 923 according to the second embodiment of the present invention (c) The fragmentary sectional view which shows the structure of the yoke raw material shaping | molding main body 923 in Embodiment 2. FIG. The figure which shows another example of a structure of the manufacturing apparatus of the motor components in Embodiment 2 of this invention. The figure which shows the structure of the manufacturing apparatus of the motor components in Embodiment 3 of this invention. The figure which shows the structure of the yoke raw material holding | maintenance part 960 of the manufacturing apparatus of the motor components in Embodiment 3 of this invention. (A) The figure for demonstrating operation | movement of the motor component manufacturing apparatus in Embodiment 3 of this invention (b) The figure for demonstrating operation | movement of the motor component manufacturing apparatus in Embodiment 3 of this invention. The figure for demonstrating operation | movement of the manufacturing apparatus of the motor components in Embodiment 3 of this invention. (A) The figure for demonstrating operation | movement of the motor component manufacturing apparatus in Embodiment 3 of this invention (b) The figure for demonstrating operation | movement of the motor component manufacturing apparatus in Embodiment 3 of this invention (c) ) Diagram for explaining the operation of the motor component manufacturing apparatus according to the third embodiment of the present invention. (A) Front view of main part of conventional slotless motor (b) Side view of conventional slotless motor The figure for demonstrating the manufacturing method of the motor coil by a prior art The figure for demonstrating the manufacturing method of the motor coil by a prior art The figure for demonstrating the manufacturing method of the motor coil by a prior art The figure for demonstrating the manufacturing method of the motor coil by a prior art The figure for demonstrating the manufacturing method of the motor coil by a prior art The figure for demonstrating the manufacturing method of the motor coil by a prior art The figure for demonstrating the manufacturing method of the motor coil by a prior art The figure for demonstrating the manufacturing method of the motor coil by a prior art The figure for demonstrating the manufacturing method of the motor coil by a prior art (A) A diagram showing a non-oriented electrical steel sheet (b) A diagram showing a yoke material 1842 (c) A diagram showing a stator yoke 1840

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Motor component 110 Motor coil 111 Both ends 112 Center part 120 Stator yoke

Claims (3)

A stator yoke of a slotless motor, which is made of a wire rod wound in a coil shape by edgewise winding a flat wire whose longitudinal direction is in the rolling direction, using any one of an electromagnetic steel plate, a silicon steel plate, or an amorphous plate ,
The outer diameter of at least both ends is larger than the outer diameter of the central portion, and the central portion includes a cylindrical motor coil inserted into the stator yoke,
The outer diameter of the both end portions of the motor coil is larger than the inner diameter of the stator yoke, and the outer diameter of the central portion of the motor coil is equal to or smaller than the inner diameter of the stator yoke,
A motor component of a slotless motor in which an inner diameter of the both end portions is equal to an inner diameter of the central portion. A motor component of the slotless motor according to claim 1;
A slotless motor comprising: a stator yoke and a storage portion for storing the motor coil. A part of the inner wall of the storage part is thinner than the other part,
The slotless motor according to claim 2, wherein the motor coil is fixed in the housing portion by fitting the stator yoke to a part of the inner wall whose thickness is thinner than that of the other part. .

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