JP5217145B2 - Field element and armature core, armature and motor - Google Patents

Description

  The present invention relates to a field element and an armature core, and is particularly applied to an axial gap type motor.

  The axial gap type motor includes a field element and an armature. The field element has a yoke and a magnet provided on the yoke. The armature includes a yoke, teeth provided on the yoke, and windings disposed on the teeth. The magnet of the field element and the tooth of the armature face each other through an air gap.

  With respect to the armature yoke, it has been proposed to use a yoke in which a magnetic plate is wound around the motor shaft. Such a technique is disclosed in Patent Document 1, for example.

  Other techniques related to the present invention are disclosed in Patent Documents 2 and 3.

JP 2004-357391 A JP 2005-348472 A JP 2005-278322 A

  However, since the conventional one in which a magnetic plate is wound has a circular shape, deterioration of magnetic characteristics due to bending, for example, a decrease in magnetic permeability and saturation magnetic flux density has occurred throughout the yoke. For this reason, the efficiency of the armature has been reduced.

  The present invention has been made in view of the above-described circumstances, and an object thereof is to prevent the deterioration of the magnetic characteristics of the field element and the armature.

A field element according to a first aspect of the present invention includes a plurality of members (1112; 1121; 113) arranged in an annular shape along a circumferential direction (93) around an axis (92) along a predetermined direction (91). ) And a pair of first and second magnets (1211, 1212; 1231, 1232; 1251, 1252), and the yoke is formed of the members adjacent to each other in the circumferential direction. Between the positions (r11 to r16; r1 to r6; r21 to r26), the magnetic properties are lower than the members, and the first and second magnets belonging to the same pair are adjacent to both sides of the position. Each of the members is provided from the predetermined direction and has the same polarity on the surface (1211a, 1212a; 1231a, 1232a; 1251a, 1252a) opposite to the member, Serial yoke (11), said shaft (92) possess magnetic plate which is wound around the (111), wound innermost side of said magnetic plate (1111), the A plurality of first surfaces (1111a) exhibiting a first curvature and a plurality of second surfaces (1111b) exhibiting a second curvature larger than the first curvature, as viewed from the predetermined direction (91). The first surface and the second surface are alternately arranged around the axis, and the magnetic plate is relative to the first surface when viewed from the predetermined direction. The member has a portion (1112) along the first surface opposite to the center of curvature (C1) of the first surface as the member, and the center of curvature of the second surface with respect to the second surface On the side opposite to (C2), a portion (1113) along the second surface is provided at the position (r11 to r16) .

Field element according to claim 2 of the present invention, in the field element according to claim 1, wherein the first magnet belonging to the same said pair said the (1211; 1231 1251) the second magnet ( 1212; 1232; 1252) are connected to each other to cover the positions (r11 to r16; r1 to r6; r21 to r26) from the predetermined direction (91).

A field element according to a third aspect of the present invention is the field element according to the first or second aspect , wherein the third and fourth magnets (1221, 1222; 1241, 1242; 1261, 1262), and the third and fourth magnets belonging to the same pair are the members (1112; 1121; 113) provided with the first and second magnets belonging to the same pair. ) Between the positions (r11 to r16; r1 to r6; r21 to r26) that are different from the positions (r11 to r16; r21 to r26). The second magnet has a polarity different from the polarity exhibited by the surface (1211a, 1212a; 1231a, 1232a; 1251a, 1252a), and the surface (1221a, 1) opposite to the member 22a; exhibits 1261a, a 1262a); 1241a, 1242a.

Field element according to the fourth aspect of the invention, according to claim 3 in the field element according the third belonging to the same said pair of magnets (1221; 1241; 1261) and the fourth magnet (1222 1242; 1262) are connected to each other to cover the positions (r11 to r16; r1 to r6; r21 to r26) from the predetermined direction (91).

A field element according to a fifth aspect of the present invention is the field element according to the third or fourth aspect , wherein the first to fourth magnets (1211, 1212, 1221, 1222; 1231, 1232) are provided. , 1241, 1242; 1251, 1252, 1261, 1262), and the first to fourth magnets are repeatedly arranged in this order along the circumferential direction (93).

A field element according to a sixth aspect of the present invention is the field element according to the fifth aspect , wherein in the circumferential direction (93), the first magnet (1211; 1231; 1251) and the fourth element are provided. Magnets (1222; 1242; 1262) are connected, and the second magnets (1212; 1232; 1252) and the third magnets (1221; 1241; 1261) are connected.

According to a seventh aspect of the present invention, there is provided a field element (1) according to any one of the first to sixth aspects, wherein the motor is opposed to the field element from the predetermined direction (91). And an armature provided.

An armature magnetic core according to an eighth aspect of the present invention includes a plurality of members (1112; 1121) arranged in an annular shape along a circumferential direction (93) around an axis (92) along a predetermined direction (91). 113) and a first magnetic body (2121; 2123; 2125), and the yoke is positioned between the adjacent members in the circumferential direction (r11 to r16; r1 to r6). R21 to r26), the magnetic properties are lower than that of the member, the first magnetic body is provided on the member from the predetermined direction, and the yoke (211) is centered on the shaft (92); possess wound magnetic plate which is wound the (111), wound innermost side of said magnetic plate (1111), when viewed from the predetermined direction (91), a first curvature Plural first surfaces (1111a) to be presented A plurality of second surfaces (1111b) exhibiting a second curvature larger than the first curvature, and the first surface and the second surface are alternately arranged around the axis. The magnetic material plate has a portion (1112) along the first surface opposite to the center of curvature (C1) of the first surface with respect to the first surface when viewed from the predetermined direction. And the portion (1113) along the second surface opposite to the center of curvature (C2) of the second surface with respect to the second surface is the position (r11 to r16). ) .

An armature core according to a ninth aspect of the present invention is the armature magnetic core according to the eighth aspect , wherein the first magnetic body (2121; 2123; 2125) is the member ( 1112; 1121; 113) extends above the position (r11-r16; r1-r6; r21-r26).

Armature core according to claim 1 0 of the present invention, in the armature for core according to claim 8 or claim 9, wherein the first magnetic body (2121; 2123; 2125) is provided above With respect to the position (r11 to r16; r1 to r6; r21 to r26) adjacent to the member (1112; 1121; 113), the predetermined direction (91) is applied to the member adjacent from the opposite side to the member. And a second magnetic body (2122; 2124; 2126) paired with the first magnetic body.

Armature core according to claim 1 1 of the invention, in the armature magnetic core for claim 1 0, wherein the first magnetic body belonging to the same said pair and (2121; 2123 2125) the first The two magnetic bodies (2122; 2124; 2126) are connected to each other to cover the positions (r11 to r16; r1 to r6; r21 to r26) from the predetermined direction (91).

Armature core according to claim 1 2 of the present invention, in the armature core according to claim 1 0 or claim 1 1, wherein a plurality of the arranged annularly around said shaft (92) Provide a pair.

Armature according to claim 1 3 of the invention, according to claim 1 0 to Claim 1 and 2 of the armature core according to any one (21) one one of the teeth of said pair (212) And windings (22) arranged on the teeth.

Motor according to claims 1 to 4, the present invention includes an armature (2) according to claim 1 3, wherein a magneton field which is opposed to the armature from a predetermined direction (91).

Motor according to claim 1 5 of the invention is the motor according to claim 1 4, wherein said field element, according to claim 1 to field element according to any one of claims 8 (1) The first and second magnets (1211, 1212; 1231, 1232; 1251, 1252) of the field element are on the armature side with respect to the yoke (11) of the field element. Is provided.

According to the field element of the first aspect of the present invention, the first and second magnets are respectively provided on the member adjacent to both sides of the position, and have the same polarity on the surface opposite to the member. Therefore, the magnetic flux flowing in the field element hardly flows to the position where the magnetic characteristics are low. Therefore, even if there exists the said position with low magnetic characteristics, the magnetic characteristic of a field element does not fall easily. In addition, since the yoke is obtained by winding the magnetic plate, the field element can be easily manufactured. And the curvature of the part (member) along a 1st surface can be made small by providing the part along a 2nd surface. Therefore, it is possible to reduce the deterioration of the magnetic characteristics generated in the member due to the bending stress.

According to the field element according to claim 2 of the present invention, it is only necessary to provide a single magnet including the first and second magnets from a predetermined direction with respect to the yoke. Simplified.

According to the field element according to claim 3 of the present invention, the third and fourth magnets are respectively provided on the member adjacent to both sides of the position, and have the same polarity on the surface opposite to the member. Therefore, the magnetic flux flowing in the field element hardly flows to the position where the magnetic characteristics are low, and mostly passes to the first and second magnets having different polarities through the member where the magnetic characteristics are hardly deteriorated. And flow. Therefore, the deterioration of the magnetic properties of the field element can be prevented more efficiently.

According to the field element of claim 4 of the present invention, it is only necessary to provide a single magnet including the third and fourth magnets from a predetermined direction with respect to the yoke. Simplified.

According to the field element of claim 5 of the present invention, different polarities appear alternately along the circumferential direction on the surface of the field element viewed from a predetermined direction. Therefore, in a motor obtained by providing an armature from a predetermined direction facing the field element, the field element can be rotated by a rotating magnetic field generated by the armature.

According to the field element of claim 6 of the present invention, when the first and second magnets are also connected to each other, and the third and fourth magnets are also connected to each other, the first to fourth A single magnet including the magnet need only be provided on the yoke. Therefore, the manufacture of the field element is simplified.

  When only the first and fourth magnets are connected to each other and only the second and third magnets are connected to each other, a single magnet including the first and fourth magnets, A field element can be manufactured only by providing a member with a single magnet including three magnets. In addition, when the member is hardly bent, a trapezoidal shape is adopted as the shape of the single magnet, and thus it is easy to obtain the single magnet. Therefore, the manufacture of the field element is simplified.

According to the motor of the seventh aspect of the present invention, the magnetic properties of the field element are unlikely to deteriorate, so that the efficiency of the motor is prevented from decreasing.

According to the armature core according to claim 8 of the present invention, the magnetic flux flowing on the first magnetic body side with respect to the yoke is guided to the first magnetic body having a low magnetic resistance, most of which is the first Only through the magnetic material flows to the member with almost no deterioration in magnetic properties. Therefore, even if there exists the said position with a low magnetic characteristic, the magnetic characteristic of the armature core is hard to fall. In addition, since the yoke is obtained by winding the magnetic plate, it is easy to manufacture the armature core. And the curvature of the part (member) along a 1st surface can be made small by providing the part along a 2nd surface. Therefore, it is possible to reduce the deterioration of the magnetic characteristics of the member caused by bending stress.

According to the armature core of claim 9 of the present invention, more magnetic flux can be guided to the first magnetic body by extending the first magnetic body on the position. Most of the magnetic flux guided to the extended portion also flows to the member only through the first magnetic body. Therefore, there is almost no deterioration of the magnetic characteristics of the armature core.

According to the armature core according to claim 1 0 of the present invention, as one of the teeth one of the pair, which in the armature obtained by arranging the winding, first and second magnetic bodies The same polarity occurs on the surface opposite to the yoke. Therefore, most of the magnetic flux does not flow to the position where the magnetic characteristics may be deteriorated, thereby preventing a decrease in the magnetic characteristics of the armature.

According to the armature core according to claim 1 1 of the present invention, a single magnetic material comprising a first and second magnetic bodies, it is only provided from a predetermined direction relative to the yoke, the armature The production of the magnetic core is simplified.

According to the armature core according to claim 1 2 of the present invention, as a one of the teeth of the pair, by which to place the winding, the armature is obtained.

According to the armature to claim 1 3 of the present invention, since the deterioration of the magnetic properties of the armature core is prevented, also decrease the efficiency of the armature can be prevented.

According to the motor according to claim 1 4 of the present invention, it is possible to prevent decrease in the efficiency of the armature, also decrease the efficiency of the motor can be prevented.

According to the motor according to claim 1 5 of the present invention, since the deterioration of the magnetic properties of the field element is prevented, the efficiency of the motor is not lowered.

1. About Field Element FIG. 1 conceptually shows a field element 1 according to the present invention. The field element 1 includes a yoke 11 and a magnet 12. In FIG. 1, the magnet 12 is shown as a single one, but may be constituted by a plurality of magnets, for example, as will be described later.

(1) First Aspect FIG. 2 conceptually shows a yoke 11 according to this aspect. The yoke 11 has a magnetic plate 111 wound around an axis 92 along a predetermined direction 91.

  The innermost side surface 1111 of the wound magnetic plate 111 includes a plurality of first surfaces 1111a and a plurality of second surfaces 1111b. The first surface 1111 a and the second surface 1111 b are alternately arranged around the axis 92.

  The first surface 1111 a exhibits a first curvature when viewed from the predetermined direction 91. The second surface 1111 b exhibits a second curvature when viewed from the predetermined direction 91. The second curvature is greater than the first curvature.

  The magnetic plate 111 has portions 1112 and 1113. The portion 1112 is along the first surface 1111a on the side opposite to the center of curvature C1 of the first surface 1111a when viewed from the predetermined direction 91. The portion 1113 is along the second surface 1111b on the side opposite to the center of curvature C2 of the second surface 1111b when viewed from the predetermined direction 91.

  If the portion 1112 is grasped as a member of the yoke 11, it can be grasped as follows. The yoke 11 has a plurality of members arranged in an annular shape around the shaft 92 along the circumferential direction 93. The portion 1113 is disposed at positions r11 to r16 between adjacent members in the circumferential direction 93.

  The greater the first and second curvatures, the more stress is applied to the members 1112 and 1113, and the magnetic characteristics of the portions 1112 and 1113 are likely to deteriorate. Therefore, the magnetic properties of the portion 1113 along the second surface 1111b exhibiting the second curvature larger than the first curvature are more likely to deteriorate than the magnetic properties of the portion 1112. This can be grasped as follows. That is, the yoke 11 has lower magnetic properties than the portion 1112 (member) at the positions r11 to r16. Specifically, the magnetic permeability decreases and the iron loss increases.

  According to the yoke 11, since the yoke 11 is obtained by winding the magnetic body plate 111, the field element 1 can be easily manufactured. Moreover, by providing the portion 1113, the curvature of the portion 1112 (member) can be reduced. Therefore, it is possible to reduce the deterioration of the magnetic characteristics generated in the portion 1112 due to the bending stress.

  FIG. 3 conceptually shows the magnet 12 provided on the yoke 11 (FIG. 2). Magnet 12 includes magnets 1211 and 1212 paired with each other and magnets 1221 and 1222 paired with each other.

  The magnets 1211 and 1212 belonging to the same pair are provided in a predetermined direction 91 on each of the portions 1112 (members) adjacent to both sides of the portion 1113, and have the same polarity on the surfaces 1211a and 1212a opposite to the portion 1112 (members). Presents.

  The magnets 1221 and 1222 belonging to the same pair are arranged in a predetermined direction 91 on each of the portions 1112 adjacent to both sides of the portion 1113 different from the portion 1113 sandwiched between the portions 1112 provided with the magnets 1211 and 1212 belonging to the same pair. Provided. The magnets 1221 and 1222 have the same polarity on the surfaces 1221a and 1222a opposite to the portion 1112 (member).

  According to the field element 1, the magnetic flux flowing in the field element 1 hardly flows in the portion 1113 having low magnetic characteristics. Therefore, even if there exists the part 1113 with a low magnetic characteristic, the magnetic characteristic of the field element 1 does not fall easily.

  Specifically, since the magnets 1211 and 1212 belonging to the same pair have the same polarity on the surfaces 1211a and 1212a, the magnetic flux flowing into and out of the magnets 1211 and 1212 is seen from the predetermined direction 91 and the magnets 1211 and 1212. Almost no flow in the portion 1113 sandwiched between the two.

  A description will be given using the motor 11 described later, in which magnets 1221 and 1222 have different polarities on the surfaces 1221a and 1222a and magnets 1211 and 1212 have different polarities on the surfaces 1211a and 1212a. In the motor 11, the magnetic flux of the magnet 1211 flows to the magnet 1222 adjacent to the opposite side of the magnet 1212 belonging to the same pair. The magnetic flux of the magnet 1212 flows to the magnet 1221 adjacent to the magnet 1211 on the opposite side to the magnet 1211 belonging to the same pair.

  The same applies to the magnets 1221 and 1222 belonging to the same pair.

  The portion 1113 may be covered from the predetermined direction 91 by the magnet 121 in which the magnets 1211 and 1212 belonging to the same pair are connected to each other. Similarly, the portion 1113 may be covered from the predetermined direction 91 by the magnet 122 in which the magnets 1221 and 1222 belonging to the same pair are connected to each other. Such an embodiment is illustrated in FIG. It is desirable that the magnets 1211 and 1212 are also magnetized near the boundary.

  According to this aspect, it is only necessary to provide the single magnet 121 including the magnets 1211 and 1212 from the predetermined direction 91 with respect to the yoke 11. Similarly, the single magnet 122 including the magnets 1221 and 1222 need only be provided from the predetermined direction 91 with respect to the yoke 11. Therefore, the manufacture of the field element 1 is simplified. The magnet 121 and the magnet 122 may be in contact with each other.

  It is desirable that the magnet 121 and the magnet 122 adjacent in the circumferential direction 93 are connected to each other. This is because when the field element 1 is manufactured, it is only necessary to provide the single magnet 12 on the yoke 11, thereby simplifying the manufacture of the field element 1.

  The polarities of the magnets 1221 and 1222 on the surfaces 1221a and 1222a are preferably different from the polarities of the magnets 1211 and 1212 on the surfaces 1211a and 1212a. This is because the magnetic flux flowing in the field element 1 hardly flows in the portion 1113 having a low magnetic property, and most of the magnets 1211 and 1212 and the magnet 1221 are passed through the portion 1112 (member) in which the magnetic property is hardly deteriorated. , 1222. Therefore, the deterioration of the magnetic characteristics of the field element 1 is prevented more efficiently. For example, when the magnets 1221 and 1222 exhibit N poles (or S poles) on the surfaces 1221a and 1222a, the magnets 1211 and 1212 exhibit S poles (or N poles) on the surfaces 1211a and 1212a.

  As shown in FIG. 3, the magnets 1211, 1212, 1221, and 1222 are desirably repeatedly arranged along the circumferential direction 93 in this order. This is because different polarities appear alternately along the circumferential direction 93 on the surface of the field element 1 viewed from the predetermined direction 91. In a motor obtained by providing an armature from a predetermined direction 91 facing the field element 1, the field element 1 can be rotated by a rotating magnetic field generated by the armature.

(2) Second Mode FIG. 4 conceptually shows the yoke 11 according to this mode. The yoke 11 has a magnetic plate 112 wound around an axis 92 along a predetermined direction 91. The magnetic plate 112 is bent toward the shaft 92 by a predetermined angle θ at positions r1 to r6.

  Specifically, in FIG. 4, the magnetic material plate 112 is wound in the following manner. The positions r1 to r6 are arranged every 60 ° around the axis 92 in this order. A portion 1121 between the positions r1 and r2 adjacent to each other in the circumferential direction 93 of the magnetic plate 112 is along a straight line 1122. The straight line 1122 forms an angle of 60 ° when viewed from the predetermined direction 91 with both the straight line 1123 passing through the position r1 and the axis 92 and the straight line 1124 passing through the position r2 and the axis 92. Then, it is bent toward the shaft 92 by an angle of 60 ° at positions r1 to r6 (θ = 60 °).

  Note that the portion 1121 may be curved, but it is desirable to keep the portion 1121 along a straight line from the viewpoint of preventing deterioration of magnetic characteristics.

  If the portion 1121 is grasped as a member of the yoke 11, it can be grasped as follows. The yoke 11 has a plurality of members arranged in an annular shape around the shaft 92 along the circumferential direction 93.

  At the positions r1 to r6 where the magnetic plate 112 is bent, the curvature is remarkably large, and the magnetic characteristics are more likely to deteriorate than the portion 1121. This can be grasped as follows. That is, the yoke 11 has lower magnetic characteristics than the portion 1121 at the positions r1 to r6.

  According to the yoke 11, since the yoke 11 is obtained by winding the magnetic body plate 112, the field element 1 can be easily manufactured. Moreover, by providing the bent positions r1 to r6, the yoke 11 can be manufactured without bending the magnetic plate 112 at the portion 1121 (member) between the positions r1 to r6 adjacent in the circumferential direction. Therefore, the magnetic property deterioration caused by the bending stress hardly occurs in the portion 1121.

  FIG. 5 conceptually shows the magnet 12 provided on the yoke 11 (FIG. 4). The magnet 12 includes magnets 1231 and 1232 that are paired with each other and magnets 1241 and 1242 that are paired with each other.

  The magnets 1231 and 1232 belonging to the same pair are provided in a predetermined direction 91 on each of the portions 1121 (members) adjacent to both sides of the position r1, and have the same polarity on the surfaces 1231a and 1232a opposite to the portion 1121 (members). Presents. The magnets 1231 and 1232 belonging to the same pair are similarly provided on both sides of the positions r3 and r5.

  The magnets 1241 and 1242 belonging to the same pair are provided in a predetermined direction 91 on each of the portions 1121 (members) adjacent to both sides of the position r2, and have the same polarity on the surfaces 1241a and 1242a opposite to the portion 1121 (members). Presents. Magnets 1241 and 1242 belonging to the same pair are similarly provided on both sides of positions r4 and r6.

  Note that the contents of the magnets 1241 and 1242 belonging to the same pair are different from the positions r1, r3 and r5 sandwiched between the portions 1121 (members) provided with the magnets 1231 and 1232 belonging to the same pair. It can be grasped that it is provided in the portion 1121 (member) adjacent to both sides of r6.

  According to the field element 1, the same effect as the field element 1 described in the first aspect can be obtained. That is, since the magnetic flux flowing in the field element 1 hardly flows at the positions r1 to r6 where the magnetic resistance is low, the magnetic characteristics of the field element 1 are lowered even if the positions r1 to r6 are low. Hateful.

  Regarding the magnets 1231, 1232, 1241, and 1242, the following modes can be adopted as in the first mode. That is, the positions r1, r3, and r5 are covered from the predetermined direction 91 by the magnet 123 in which the magnets 1231 and 1232 belonging to the same pair are connected to each other. The positions r2, r4, r6 are covered from a predetermined direction 91 by the magnet 124 in which the magnets 1241, 1242 belonging to the same pair are connected to each other. The magnet 123 and the magnet 124 may be in contact with each other.

  It is desirable that the magnets 123 and 124 adjacent in the circumferential direction 93 are coupled to each other as shown in FIG. This is because when the field element 1 is manufactured, it is only necessary to provide the single magnet 12 on the yoke 11, thereby simplifying the manufacture of the field element 1.

  As in the first embodiment, it is desirable that the polarity that the magnets 1241 and 1242 exhibit on the surfaces 1241a and 1242a and the polarity that the magnets 1231 and 1232 exhibit on the surfaces 1231a and 1232a are different from each other.

  As shown in FIG. 5, the magnets 1231, 1232, 1241, and 1242 are desirably repeatedly arranged along the circumferential direction 93 in this order. This is because the same effect as that of the field element 1 (FIG. 3) described in the first embodiment can be obtained.

  In such an arrangement of the magnets 1231, 1232, 1241, and 1242, only the magnets 1231 and 1242 adjacent in the circumferential direction 93 may be connected to each other, and only the magnets 1232 and 1241 adjacent in the circumferential direction 93 may be connected to each other. Such an embodiment is illustrated in FIG. The magnets adjacent to the circumferential direction 93 may be in contact with each other or may be separated as shown in FIG.

  According to this aspect, the field element 1 can be formed by simply providing the yoke 11 with the single magnet 127 to which only the magnets 1231 and 1242 are connected and the single magnet 128 to which only the magnets 1232 and 1241 are connected. Can be manufactured.

  In addition, when the portion 1121 (member) is hardly bent, a trapezoidal shape can be adopted as the shape of the single magnets 127 and 128 (FIG. 7). When such a shape is adopted, the single magnets 127 and 128 can be easily obtained, and thus the manufacture of the field element 1 is further simplified. Moreover, when the polarities of the magnets 1231 and 1232 on the surfaces 1231a and 1232a and the polarities of the magnets 1241 and 1242 on the surfaces 1241a and 1242a are different, the magnetic flux density portion generated on the surface of the field element 1 is a sine wave. Get closer.

(3) Third Mode FIG. 8 conceptually shows the yoke 11 according to this mode. The yoke 11 has a plurality of members 113.

  The member 113 is annularly arranged along the circumferential direction 93 around the shaft 92 along the predetermined direction 91. At positions r21 to r26 around the shaft 92, adjacent members 113 in the circumferential direction 93 are connected to each other. In each of the positions r21 to r26, boundaries b1 to b6 of the connected members are formed.

  According to the yoke 11, since the members 113 can be manufactured individually, the field element 1 can be easily manufactured.

  For example, as shown in FIG. 8, the members 113 are individually manufactured by laminating magnetic plates 1131 from one of the inner peripheral side and the outer peripheral side to the other. According to the member 113, iron loss generated in the member 113 can be reduced. Moreover, in the yoke 11 obtained by connecting the members 113, the magnetic flux flowing in the member 113 along the circumferential direction 93 is hardly disturbed by the boundary between the laminated magnetic plates 113. The member 113 may be obtained by laminating magnetic plates 1131 cut to different lengths, or may be obtained by laminating magnetic material plates having the same length and then cutting them.

  FIG. 9 conceptually shows the magnet 12 provided on the yoke 11 (FIG. 8). Magnet 12 includes magnets 1251 and 1252 paired with each other and magnets 1261 and 1262 paired with each other.

  The magnets 1251 and 1252 belonging to the same pair are provided from the predetermined direction 91 on each of the members 113 adjacent to both sides of the boundary b1, and have the same polarity on the surfaces 1251a and 1252a opposite to the member 113. The magnets 1251 and 1252 belonging to the same pair are similarly provided on both sides of the boundaries b3 and b5.

  The magnets 1261 and 1262 belonging to the same pair are provided in the predetermined direction 91 on each of the members 113 adjacent to both sides of the boundary b2, and have the same polarity on the surfaces 1261a and 1262a opposite to the member 113. The magnets 1261 and 1262 belonging to the same pair are similarly provided on both sides of the boundaries b4 and b6.

  In addition, this content is that magnets 1261 and 1262 belonging to the same pair are on both sides of boundaries b2, b4 and b6 different from boundaries b1, b3 and b5 sandwiched between members 113 provided with magnets 1251 and 1252 belonging to the same pair. It can be grasped that it is provided in the member 113 adjacent to the.

  According to the field element 1, the same effect as the field element 1 described in the first aspect can be obtained. That is, since the magnetic flux flowing in the field element 1 hardly flows at the boundaries b1 to b6 having low magnetic resistance, the magnetic characteristics of the field element 1 are lowered even if the boundaries b1 to b6 having low magnetic characteristics are present. Hateful.

  Regarding the magnets 1251, 1252, 1261, and 1262, the following modes can be adopted as in the first mode. That is, the boundaries b1, b3, and b5 are covered from the predetermined direction 91 by the magnet 125 in which the magnets 1251 and 1252 belonging to the same pair are connected to each other. The boundaries b2, b4, and b6 are covered from the predetermined direction 91 by the magnet 126 in which the magnets 1261 and 1262 belonging to the same pair are connected to each other. The magnet 125 and the magnet 126 may be in contact with each other.

  It is desirable that the magnets 125 and 126 adjacent in the circumferential direction 93 are connected to each other. This is because when the field element 1 is manufactured, it is only necessary to provide the single magnet 12 on the yoke 11, thereby simplifying the manufacture of the field element.

  Similar to the first embodiment, it is desirable that the polarities of the magnets 1251 and 1252 on the surfaces 1251a and 1252a and the polarities of the magnets 1261 and 1262 on the surfaces 1261a and 1262a are different from each other.

  As shown in FIG. 9, the magnets 1251, 1252, 1261, and 1262 are desirably repeatedly arranged along the circumferential direction 93 in this order. This is because the same effect as that of the field element 1 (FIG. 3) described in the first embodiment can be obtained.

  In such an arrangement of the magnets 1251, 1252, 1261 and 1262, as in the second mode (FIG. 7), only the magnets 1251 and 1262 adjacent in the circumferential direction 93 are connected to each other, and the magnet 1252 adjacent in the circumferential direction 93 is connected. , 1261 may be connected to each other.

  In this case, since the field element 1 can be manufactured by the following process, the manufacture of the field element 1 is further simplified. That is, the magnets 1251 and 1262 connected to each half of the individually manufactured members 113 are provided. Connected magnets 1252 and 1261 are provided to the other half of the members 113, respectively. The former member 113 and the latter member 113 are alternately arranged around the shaft 92 in an annular shape along the circumferential direction 93, and adjacent members along the circumferential direction 92 are connected to each other.

2. About Armature FIG. 10 conceptually shows an armature 2 according to the present invention. The armature 2 includes an armature magnetic core 21 and a winding 22. The armature magnetic core 21 includes a yoke 211 and a tooth 212. Winding 22 is arranged on teeth 212.

  FIG. 10 shows a case where the armature core 21 corresponding to, for example, a 6-pole field element has nine teeth 212, but the number of teeth 212 may be six, for example. There may be more than nine. Below, especially the case where the number of the teeth 212 is six is demonstrated.

(1) First Mode FIG. 11 conceptually shows an armature core 21 according to this mode. The yoke 211 is the same as the yoke 11 shown in FIG. The tooth 212 includes magnetic bodies 2121 and 2122 which are paired with each other.

  The magnetic bodies 2121 and 2122 forming the same pair are provided from the predetermined direction 91 in each of the portions 1112 adjacent to both sides of the portion 1113.

  According to this aspect, the armature 2 obtained by arranging the winding 22 on one pair of the magnetic members 2121 and 2122 as one tooth 212 has a portion 1113 having low magnetic characteristics. However, the magnetic properties are not easily lowered. Therefore, a decrease in the efficiency of the armature 2 is prevented.

  Specifically, since the same polarity is generated on the surfaces 2121a and 2122a of the magnetic bodies 2121 and 2122 belonging to the same pair on the side opposite to the yoke 211, the magnetic flux flowing into and out of the magnetic bodies 2121 and 2122 has a predetermined value. When viewed from the direction 91, the portion 1113 sandwiched between the magnetic bodies 2121 and 2122 hardly flows. This is because the magnetic flux flowing through the magnetic body 2121 flows to 2122 adjacent to the opposite side of the magnetic body 2122 belonging to the same pair with respect to itself, and the magnetic flux flowing through the magnetic body 2122 is magnetic belonging to the same pair with respect to itself. This is because it flows to 2121 adjacent to the opposite side of the body 2121.

  The portion 1113 may be covered from the predetermined direction 91 by the teeth 212 in which the magnetic bodies 2121 and 2122 belonging to the same pair are connected to each other. FIG. 11 shows such a mode.

  According to such an aspect, since it is only necessary to provide the single tooth 212 including the magnetic bodies 2121 and 2122 with respect to the yoke 211 from the predetermined direction 91, the manufacture of the armature core 21 is simplified.

  Even if only one of the magnetic bodies 2121 and 2122 is provided in this embodiment, the following effects can be obtained. That is, since the magnetic body 2121 (2122) is provided in the portion 1112 from the predetermined direction 91, the magnetic flux flowing to the magnetic body 2121 (2122) side with respect to the yoke 211 is more magnetic than the portion 1113 having deteriorated magnetic characteristics. It is guided to the magnetic body 2121 (2122) having a low resistance. Most of the magnetic flux flows through the magnetic plate 2121 (2122) to the portion 1112 where there is almost no deterioration in magnetic characteristics. Therefore, even if there is a portion 1113 with low magnetic characteristics, the magnetic characteristics of the armature core 21 are unlikely to deteriorate.

  The magnetic body 2121 (2122) desirably extends on a portion 1113 adjacent to the portion 1112 on which the magnetic body 2121 (2122) is provided. This is because more magnetic flux can be guided to the magnetic body 2121 (2122). That is, most of the magnetic flux guided to the extended portion of the magnetic body 2121 also flows to the portion 1112 only through the magnetic body 2121 (2122), thereby preventing the magnetic characteristics of the armature core from deteriorating. The

(2) Second Aspect FIG. 12 conceptually shows an armature core 21 according to this aspect. As the yoke 211, the same one as the yoke 11 shown in FIG. Teeth 212 includes magnetic bodies 2123 and 2124 which are paired with each other.

  The magnetic bodies 2123 and 2124 forming the same pair are provided from the predetermined direction 91 in each of the portions 1121 adjacent to both sides of the position r1. The magnetic bodies 2123 and 2124 forming the same pair are similarly provided on both sides of the positions r2 to r6.

  According to this aspect, in the armature 2 obtained by arranging the winding 22 on one pair of the magnetic members 2123 and 2124 as one tooth 212, the positions r1 to r6 having low magnetic characteristics are provided. Even if there is, it is difficult for the magnetic properties to deteriorate. Therefore, a decrease in the efficiency of the armature 2 is prevented.

  Specifically, since the same polarity occurs on the surfaces 2123a and 2124a of the magnetic bodies 2123 and 2124 belonging to the same pair on the side opposite to the yoke 211, the magnetic flux flowing into and out of the magnetic bodies 2123 and 2124 has a predetermined value. When viewed from the direction 91, there is almost no flow at positions r1 to r6 sandwiched between the magnetic bodies 2123 and 2124.

  Similarly to the first aspect, the positions r1 to r6 may be covered from the predetermined direction 91 by the teeth 212 in which the magnetic bodies 2123 and 2124 belonging to the same pair are connected to each other. FIG. 12 shows such an aspect.

  Even if only one of the magnetic bodies 2123 and 2124 is provided in this embodiment, the same effect as described in the first embodiment can be obtained. Similarly to the first embodiment, it is desirable that the magnetic body 2123 (2124) extends on positions r1 to r6 adjacent to the portion 1121 where the magnetic body 2123 is provided.

(3) Third Mode FIG. 13 conceptually shows the armature core 21 according to this mode. The yoke 211 is the same as the yoke 11 shown in FIG. The teeth 213 include magnetic bodies 2125 and 2126 that are paired with each other.

  The magnetic bodies 2125 and 2126 forming the same pair are provided from the predetermined direction 91 on each of the members 113 adjacent to both sides of the boundary b1. The magnetic bodies 2125 and 2126 forming the same pair are similarly provided on both sides of the boundaries b2 to b6.

  According to this aspect, in the armature 2 obtained by arranging the winding 22 on a pair of the magnetic members 2125 and 2126 as one tooth 212, the boundaries b1 to b6 having low magnetic characteristics are provided. Even if there is, it is difficult for the magnetic properties to deteriorate. Therefore, a decrease in the efficiency of the armature 2 is prevented.

  Specifically, since the same polarity occurs on the surfaces 2125a and 2126a of the magnetic bodies 2125 and 2126 belonging to the same pair on the side opposite to the yoke 211, the magnetic flux flowing into and out of the magnetic bodies 2125 and 2126 has a predetermined value. As seen from the direction 91, there is almost no flow at the boundaries b1 to b6 sandwiched between the magnetic bodies 2125 and 2126.

  Similarly to the first aspect, the boundaries b1 to b6 may be covered from the predetermined direction 91 by the teeth 213 in which the magnetic bodies 2125 and 2126 belonging to the same pair are connected to each other. FIG. 13 shows such an aspect.

  Even if only one of the magnetic bodies 2125 and 2126 is provided in this embodiment, the same effect as described in the first embodiment can be obtained. Similarly to the first aspect, it is desirable that the magnetic body 2125 (2126) extends on the boundaries b1 to b6 adjacent to the member 113 on which the magnetic body 2125 is provided.

3. About a motor A motor can be obtained by providing the armature facing the field element 1 (FIG. 1) described above from a predetermined direction 91. According to such a motor, since the magnetic characteristics of the field element 1 are not easily lowered, a reduction in the efficiency of the motor is prevented.

  Moreover, a motor can be obtained also by providing a field element facing the armature 2 (FIG. 10) described above from a predetermined direction 91. According to such a motor, since the magnetic characteristics of the armature 2 are not easily lowered, a reduction in the efficiency of the motor is prevented.

  A motor may be obtained from the field element 1 and the armature 2. Specifically, the armature 2 directs the surfaces 2121 a to 2126 a of the teeth 212 toward the field element 1. The field element 1 directs the surfaces 1211 a to 1261 a and 1212 a to 1262 a of the magnet 12 toward the armature 2. According to such a motor, there is almost no decrease in the magnetic characteristics in either the field element 1 or the armature 2, and therefore there is almost no decrease in the efficiency of the motor.

1. Field Element When the magnet 12 is provided on the yoke 11, the magnet 12 is fixed to the yoke 11 with an adhesive or the like, for example.

  In the field element 1, for example, as shown in FIG. 1, a metal member 13 may be fitted to a side surface 1111 on the inner peripheral side of the yoke 11. The metal member 13 has a hole 131 that penetrates along a predetermined direction 91. The hole 131 is provided with a shaft. The metal member 13 may be formed by metal sintering or casting, or may be formed by stacking steel plates.

  The metal member 13 may have a portion 132 fitted to the side surface 1111 and a portion 133 connected to the portion 132 from a predetermined direction. When viewed from the predetermined direction 91, at least a part of the outer peripheral side surface of the portion 133 is located on the outer peripheral side with respect to the outer peripheral side surface of the portion 132. According to the metal member 13, even if a thrust force is generated on the shaft provided in the hole 131 and a force is generated in the direction opposite to the predetermined direction 91 on the metal member 13, the metal member 13 is removed from the yoke 11. Removal is prevented by the portion 133.

  Further, a portion of the shaft on the same side as the magnet 12 with respect to the yoke 11 may be made thicker than other portions. According to such a shaft, the shaft is prevented from coming off from the yoke 11 in a direction opposite to the predetermined direction 91, and in the motor obtained by providing the armature with respect to the field element 1, the air gap length is small. Is also prevented.

  The yoke 11 may be fitted into the hole 141 of the holding member 14 as shown in FIG. Thereby, since the yoke 11 is held by the holding member 14 from the outer peripheral side, the adhesion of the wound magnetic plates 111 and 112 and the laminated magnetic plates 1131 is enhanced. Therefore, vibration and noise generated when the field element 1 is rotated can be reduced. For example, metal or resin can be used as the material of the holding member 14.

2. Regarding Armature FIG. 14 shows a case where the teeth 212 are fixed to the yoke 211 by the metal plate 213. Specifically, the metal plate 213 has a plurality of holes 2131 and is provided in the yoke 211 from a predetermined direction 91. The hole 2131 penetrates the metal plate 213 provided in the yoke 211 in a predetermined direction 91 and is arranged in an annular shape around the shaft 92. Teeth 212 is fitted into hole 2131.

  According to the metal plate 213, the hole 2131 can be used for positioning when the teeth 212 are provided on the yoke 211. In addition, it is desirable that the thickness of the metal plate 213 in the predetermined direction 91 is small in order to reduce the influence on the magnetic characteristics of the field element 1. Note that the metal plate 213 may be formed of resin to insulate between the coil and the core.

  When the teeth 212 are provided on the yoke 211, like the field element 1, the teeth 212 may be fixed to the yoke 211 with an adhesive or the like, for example.

  As shown in FIG. 10, the metal member 23 may be fitted to the inner peripheral side surface 1111 of the yoke 211.

  Further, the yoke 211 may be held by the holding member 24 shown in FIGS. In FIG. 10, the holding member 24 has a hole 241 that passes through the holding member 24 along a predetermined direction 91, and the yoke 211 is fitted into the hole 241. In FIG. 14, the holding member 24 has a groove 242, and the yoke 211 is fitted into the groove 242. According to such an aspect, the yoke 211 can be fixed to the container or the like via the holding member 24 by, for example, a fly.

  Concentrated winding may be adopted as the winding method of the winding 22 around the teeth 212, or distributed winding may be adopted. However, when the winding 22 is wound around the tooth 212 by concentrated winding, the magnetic characteristics are less likely to be deteriorated than when the winding 22 is wound around the tooth 212 by distributed winding. This is because the former is less likely to cause a magnetic flux to flow through the portion 1113, the positions r1 to r6, or the boundaries b1 to b6 where the magnetic characteristics may be deteriorated.

  For example, the concentrated winding is used in a motor in which the number of poles of the field element 1 is 6 and the number of teeth 212 is 9, or a motor in which the number of poles of the field element 1 is 8 and the number of teeth 212 is 9. Particularly desirable. The former motor is desirable in that the rotational force and the thrust force are stably generated around the shaft 92. The latter motor is desirable in terms of reducing the cogging torque, and since the difference between the number of poles and the number of teeth 212 is small, the yoke 211 passes through the positions r11 to r16, r1 to r6, r21 to r26 where the magnetic properties are reduced. Magnetic flux is further reduced.

3. Regarding the magnetic plate The thickness of each of the magnetic plates 111 to 113 described above is preferably 0.2 (mm) or more from the viewpoint of ease of manufacture of the yoke 11, and from the viewpoint of preventing deterioration of magnetic properties. Is preferably 0.5 (mm) or less. For example, 0.35 (mm) can be adopted as the thickness.

  From the viewpoint of ease of manufacture of the yoke 11 and prevention of deterioration of magnetic properties, it is desirable to employ silicon steel plates (electromagnetic steel plates), amorphous or permalloy (thin ribbons), etc. for the magnetic plates 111 to 113.

  According to the steel plate containing silicon, the magnetic permeability is high, and the thickness of the steel plate can be within a range of 0.2 to 0.5 (mm).

  According to amorphous (thin ribbon), the thickness can be reduced to about 0.025 (mm), so that the magnetic plates 111 and 112 can be easily wound. In addition, since the iron loss is small and the magnetic permeability is high, the field element 1 and the armature 2 are highly efficient, and a large torque is generated in the motor.

  According to the steel plate containing permalloy, the thickness can be reduced to about 0.05 (mm), and the same effect as the steel plate containing amorphous can be obtained.

  In general, with regard to the saturation magnetic flux density, a silicon steel plate (electromagnetic steel plate) is higher than an amorphous or permalloy (thin ribbon). The iron loss decreases in the order of silicon steel plate, permalloy, and amorphous. The permeability decreases in the order of permalloy, amorphous, and silicon steel plate. The ease of thinning increases in the order of silicon steel plate, permalloy, and amorphous. Therefore, an optimal material can be selected for each design specification of the yokes 111 and 211.

1 is a perspective view conceptually showing a field element 1 according to the present invention. 2 is a top view conceptually showing a yoke 11 according to a first mode of a field element 1. FIG. 1 is a top view conceptually showing a first aspect of a field element 1. FIG. FIG. 6 is a top view conceptually showing a yoke 11 according to a second aspect of the field element 1. 3 is a top view conceptually showing a second aspect of the field element 1. FIG. 3 is a top view conceptually showing a second aspect of the field element 1. FIG. 3 is a top view conceptually showing a second aspect of the field element 1. FIG. It is a top view which shows notionally the yoke 11 concerning the 3rd aspect of the field element 1. FIG. It is a top view which shows the 3rd aspect of the field element 1 notionally. 1 is a perspective view conceptually showing an armature 2 according to the present invention. FIG. 2 is a diagram conceptually showing an armature core 21 according to a first aspect of an armature 2. It is a figure which shows notionally the armature core 21 concerning the 2nd aspect of the armature 2. FIG. It is a figure which shows notionally the armature magnetic core 21 concerning the 3rd aspect of the armature 2. FIG. It is a perspective view which shows notionally the armature 2 demonstrated by the Example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Field element 2 Armature 11,211 Yoke 21 Armature core 91 Predetermined direction 92 Axis 93 Circumferential direction 111,112,1131 Magnetic body plate 113 Member 212 Teeth 1111 Side surface 1111a 1st surface 1111b 2nd surface 1112 , 1113, 1121 part 1211-11261, 1212-1262 magnet 1211a-1261a, 1212a-1262a surface 2121-2126 magnetic body r11-r16, r1-r6, r21-r26 position C1, C2 center of curvature θ predetermined angle b1-b6 boundary

Claims (15)

A yoke (11) having a plurality of members (1112; 1121; 113) arranged annularly along a circumferential direction (93) around an axis (92) along a predetermined direction (91);
First and second magnets (1211, 1212; 1231, 1232; 1251, 1252) paired with each other;
The yoke has lower magnetic properties than the members at positions (r11 to r16; r1 to r6; r21 to r26) between the members adjacent in the circumferential direction,
The first and second magnets belonging to the same pair are:
Each of the members adjacent to both sides of the position is provided from the predetermined direction;
The surface opposite to the member (1211a, 1212a; 1231a, 1232a; 1251a, 1252a) exhibits the same polarity,
The yoke (11), possess the shaft magnetic plate which is wound around the (92) (111),
The innermost side surface (1111) of the wound magnetic material plate includes a plurality of first surfaces (1111a) exhibiting a first curvature as viewed from the predetermined direction (91), and the first A plurality of second surfaces (1111b) exhibiting a second curvature greater than one curvature,
The first surface and the second surface are alternately arranged around the axis,
The magnetic plate is viewed from the predetermined direction,
A portion (1112) along the first surface on the side opposite to the center of curvature (C1) of the first surface with respect to the first surface as the member,
The position (r11 to r16) has a portion (1113) along the second surface on the side opposite to the center of curvature (C2) of the second surface with respect to the second surface.
Field element. The first magnets (1211; 1231; 1251) and the second magnets (1212; 1232; 1252) belonging to the same pair are connected to each other to be in the positions (r11 to r16; r1 to r6; r21 to r26) is covered from the predetermined direction (91) ,
The field element according to claim 1. Third and fourth magnets paired with each other (1221, 1222; 1241, 1242; 1261, 1262)
Further comprising
The third and fourth magnets belonging to the same pair are:
The position different from the positions (r11 to r16; r1 to r6; r21 to r26) sandwiched between the members (1112; 1121; 113) provided with the first and second magnets belonging to the same pair Each of the members adjacent to both sides of the predetermined direction (91),
The first and second magnets have a polarity different from the polarity exhibited by the surfaces (1211a, 1212a; 1231a, 1232a; 1251a, 1252a), and surfaces opposite to the member (1221a, 1222a; 1241a, 1242a; 1261a, 1262a)
The field element according to claim 1 or 2 . The third magnets (1221; 1241; 1261) and the fourth magnets (1222; 1242; 1262) belonging to the same pair are connected to each other so that the positions (r11 to r16; r1 to r6; r21 to The field element according to claim 3 , wherein r26) is covered from the predetermined direction (91) . A plurality of each of the first to fourth magnets (1211, 1212, 1221, 1222; 1231, 1232, 1241, 1242; 1251, 1252, 1261, 1262);
The first to fourth magnets are repeatedly arranged in this order along the circumferential direction (93) .
The field element according to claim 3 or 4 . In the circumferential direction (93),
The first magnet (1211; 1231; 1251) and the fourth magnet (1222; 1242; 1262) are coupled;
The field element according to claim 5, wherein the second magnet (1212; 1232; 1252) and the third magnet (1221; 1241; 1261) are coupled . A field element (1) according to any one of claims 1 to 6;
An armature provided to face the field element from the predetermined direction (91);
Comprising a motor . A yoke (211) having a plurality of members (1112; 1121; 113) arranged annularly along a circumferential direction (93) around an axis (92) along a predetermined direction (91);
A first magnetic body (2121; 2123; 2125) and
With
The yoke has lower magnetic properties than the members at positions (r11 to r16; r1 to r6; r21 to r26) between the members adjacent in the circumferential direction,
The first magnetic body is provided on the member from the predetermined direction,
The yoke (211) has a magnetic plate (111) wound around the axis (92),
The innermost side surface (1111) of the wound magnetic material plate includes a plurality of first surfaces (1111a) exhibiting a first curvature as viewed from the predetermined direction (91), and the first A plurality of second surfaces (1111b) exhibiting a second curvature greater than one curvature,
The first surface and the second surface are alternately arranged around the axis,
The magnetic plate is viewed from the predetermined direction,
A portion (1112) along the first surface on the side opposite to the center of curvature (C1) of the first surface with respect to the first surface as the member,
The position (r11 to r16) has a portion (1113) along the second surface on the side opposite to the center of curvature (C2) of the second surface with respect to the second surface.
Armature core . The first magnetic body (2121; 2123; 2125) extends on the positions (r11 to r16; r1 to r6; r21 to r26) adjacent to the member (1112; 1121; 113) on which the first magnetic body (2121; 2123; 2125) is provided.
The armature core according to claim 8 . With respect to the positions (r11 to r16; r1 to r6; r21 to r26) adjacent to the member (1112; 1121; 113) provided with the first magnetic body (2121; 2123; 2125), Further includes a second magnetic body (2122; 2124; 2126) provided in the predetermined direction (91) and paired with the first magnetic body on the member adjacent from the opposite side .
The armature core according to claim 8 or 9 . The first magnetic bodies (2121; 2123; 2125) and the second magnetic bodies (2122; 2124; 2126) belonging to the same pair are connected to each other and are positioned at the positions (r11 to r16; r1 to r6; r21 to r26) are covered from the predetermined direction (91) ,
The armature core according to claim 10. Comprising a plurality of said pairs arranged annularly around said axis (92) ;
The armature core according to claim 10 or 11 . The armature core (21) according to any one of claims 10 to 12,
Winding (22) arranged on the teeth with one of the pair as one tooth (212);
An armature . An armature (2) according to claim 13,
A field element provided facing the armature from a predetermined direction (91);
Comprising a motor . The field element (1) according to any one of claims 1 to 6, wherein the field element is a field element (1).
The first and second magnets (1211, 1212; 1231, 1232; 1251, 1252) of the field element are provided on the armature side with respect to the yoke (11) of the field element.
The motor according to claim 14 .

Images