JP2016034229A - Motor and generator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a motor and a generator capable of achieving downsizing and cost reduction.SOLUTION: A motor 1 or a generator including an armature 12 having coils 33 and field magnets forming a magnetic field also includes a case 11 adjacent to the armature 12. The field magnets are field magnet portions 21 formed integrally with the case 11 and magnetized as permanent magnets. Since the field magnet portions 21 form a magnetic field, the armature 12 can be arranged adjacently to the case 11, a step for attaching permanent magnets to the case 11 in manufacturing can be made unnecessary, and thereby the motor can be manufactured at a low cost.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a motor and a generator including an armature and a field magnet.

  In a motor comprising an armature that is a rotor having a coil, a field magnet (permanent magnet) that is a stator disposed around the armature, and a case that houses the armature and the field magnet. The motor is miniaturized by reducing the thickness of the magnet or devising the shape of the case (see, for example, Patent Document 1).

  Further, in a motor including a rotor having a field magnet, an armature that is a stator disposed around the rotor, and a case that houses the rotor and the armature, the rotor and the armature are arranged in the case. The motor is reduced in diameter by being arranged vertically in the interior (see, for example, Patent Document 2).

JP 2007-6688 A JP-A-56-70609

  The small DC motor described in Patent Document 1 realizes miniaturization by bringing a field magnet into close contact with the case and devising the shape of the case, but there is a limit to miniaturization.

  The rotating electromagnet described in Patent Document 2 achieves a reduction in diameter by arranging armatures, which are stators, vertically so as to sandwich the rotor from above and below, but the length is required accordingly. It becomes.

  The objective of this invention is providing the motor and generator which can implement | achieve size reduction and cost reduction.

  The present invention provides a motor or a generator including an armature having a coil and a field magnet that forms a magnetic field, and includes a structure close to the armature, and the field magnet is integrated with the structure. The motor or generator is characterized in that the field magnet portion is formed as a permanent magnet and magnetized as a permanent magnet, and the field magnet portion forms a magnetic field.

  According to the motor and the generator of the present invention, since the field magnet portion magnetized as a permanent magnet is integrally formed with the structure, it is possible to reduce the size until the armature comes close to the structure. is there. In addition, the process of attaching the permanent magnet to the structure is not necessary at the time of manufacture, and the cost can be reduced.

  In the motor or generator of the present invention, the structure is formed by plastic working.

  According to the motor and the generator of the present invention, since the structure having the field magnet portion can be formed by plastic processing, the processing cost can be further reduced.

  Further, in the motor or generator of the present invention, the structure is formed so as to be partially thick, a thick portion that is partially protruded, a convex portion that is partially protruded, or a portion that is partially recessed. It has at least 1 among a recessed part or the through-hole formed partially, It is characterized by the above-mentioned.

  According to the motor or generator of the present invention, the magnetic field formed by the structure can be changed by forming the thick part, the convex part, the concave part, and the through hole in the structure. As a result, it is possible to increase the efficiency and weight of the motor or generator. Moreover, according to plastic working, a thick part, a convex part, a recessed part, and a through-hole can be formed easily.

  In the motor or generator of the present invention, the structure includes the field magnet portion and a non-magnet portion that is not magnetized as a permanent magnet, and the field magnet portion and the non-magnet portion are: The material is different.

  In the motor or the generator of the present invention, the structure is a case that houses the armature, and either the case or the armature rotates.

  In the motor and the generator of the present invention, the field magnet portion magnetized as a permanent magnet is formed integrally with the structure, so that it can be reduced in size until the armature comes close to the structure. In addition, the process of attaching the permanent magnet to the structure is not necessary at the time of manufacture, and the cost can be reduced.

It is a perspective view of motor 1 of a 1st embodiment of the present invention. It is radial direction sectional drawing of the cutting line AA of FIG. It is radial direction sectional drawing of the motor 2 of 2nd Embodiment of this invention. It is radial direction sectional drawing of the motor 3 of 3rd Embodiment of this invention. It is radial direction sectional drawing of the motor 4 of 4th Embodiment of this invention. It is radial direction sectional drawing of the motor 5 of 5th Embodiment of this invention. It is radial direction sectional drawing of the motor 6 of 6th Embodiment of this invention. It is sectional drawing of the motor 7 of 7th Embodiment of this invention. It is a perspective view of case 111 of the motor 110 of 8th Embodiment of this invention. It is a perspective view of case 121 of the motor 120 of 9th Embodiment of this invention. It is a perspective view of case 131 of the motor 130 of 10th Embodiment of this invention. It is a perspective view of case 141 of the motor 140 of 11th Embodiment of this invention.

  FIG. 1 is a perspective view of a motor 1 according to a first embodiment of the present invention. FIG. 2 is a radial cross-sectional view taken along section line AA of FIG. In FIG. 2, the portion with dots indicates the field magnet portion 21 (hereinafter the same in all drawings).

  The motor 1 of this embodiment includes a case 11 that is a stator, an armature 12 that is a rotor housed in the case 11, and an end cap 13 that is attached to the open end of the case 11. Although it is a type | mold direct current commutator motor, it does not have a permanent magnet as a component, but has the field magnet part 21 magnetized by the case 11 as a permanent magnet.

  The case 11 is a cylindrical body with a top, and includes a field magnet portion 21 that is arranged in a cylindrical portion and is magnetized as a permanent magnet, and a bearing 23 that is disposed in the center of the top surface of the top portion, and the armature 12 is rotatable. To house. Note that the shape of the case 11 is not limited to a specific shape, and may be, for example, a cross-sectional oval shape, such as a case used in a so-called oval motor, or a rectangular cross-section.

  The case 11 is formed of a (strong) magnetic material that can magnetize at least the field magnet portion 21 as a permanent magnet. As the magnetic material of the case 11, for example, an alloy magnetic material in which iron, nickel, cobalt is mixed with other elements can be used, and KS steel mainly composed of iron, cobalt, tungsten, chromium, and carbon, MK steel mainly composed of iron, nickel, aluminum, NKS steel mainly composed of iron, nickel, aluminum, cobalt, titanium, material that is a source of alnico magnet mainly composed of aluminum, nickel, cobalt, magnetite, A material that is a source of an OP magnet mainly composed of cobalt ferrite, a material that is a source of a sintered ferrite magnet mainly composed of iron oxide, a material that is a source of a platinum magnet mainly composed of platinum, Uses materials that are the source of neodymium magnets that are mainly composed of neodymium, iron, and boron, and materials that are based on samarium cobalt magnets that are mainly composed of samarium and cobalt. Rukoto can.

  The case 11 may be formed by sintering a powdered magnetic material, but it is more preferable that the case 11 is formed of a material that can be plastically processed to facilitate processing. The case 11 may be entirely formed of a magnetic material, only the field magnet portion 21 is formed of a magnetic material, and the non-magnet portion 22 other than the field magnet portion 21 is made of another metal, synthetic resin, or the like. It may be formed.

  In the case 11, the field magnet portion 21 is magnetized as a permanent magnet. The method of magnetizing the field magnet unit 21 is not limited to a specific method, and can be magnetized by, for example, a known magnetizing device that magnetizes using a magnetizing coil.

  The case 11 may be formed in the top cylinder before the field magnet portion 21 is magnetized, or may be formed in the top cylinder after the field magnet portion 21 is magnetized. In addition, the field magnet portion 21 may be magnetized after the armature 12 is incorporated, and processing and magnetization may be appropriately performed in an optimum process.

  The field magnet portion 21 is disposed so as to be opposed to the cylindrical portion of the case 11 at two places within a range of about ¼ circle. One of the field magnet portions 21 is an N pole and the other is an S pole. So that it is magnetized. The arrangement and range of the field magnet unit 21 are not limited to a specific one as long as at least the armature 12 can rotate. In FIG. 2, the symbols N and S indicate the magnetic poles on the surface close to the armature (hereinafter the same in all drawings).

  The bearing 23 is disposed on the top surface of the top portion of the case 11 so as to rotatably hold the shaft 31 of the armature 12. The bearing 23 can be the same as a known permanent magnet type DC commutator motor.

  The armature 12 controls a shaft 31 serving as a rotating shaft, a core 32 that is an armature core fixed to the shaft 31, a coil 33 that is wound around the core 32 and through which a current flows, and a direction of a current that flows through the coil 33. A commutator (not shown) is provided, and is rotated by an electromagnetic force generated by a magnetic field (magnetic field) formed by the field magnet portion 21 of the case 11 and a current flowing through the coil 33. Since the armature 12 can be the same as a known permanent magnet type DC commutator motor, detailed description thereof is omitted.

  The shaft 31 is a cylindrical body, and is rotatably held by a bearing 23 of the case 11 and a bearing (not shown) of an end cap 13 described later.

  The core 32 is a three-slot armature core in which three teeth 35 are formed in the radial direction. The number of slots in the core 32 is not limited to a specific number of slots. The core 32 is formed, for example, by laminating electromagnetic steel sheets or the like, but is not limited thereto, and an optimal material and manufacturing method may be used as appropriate. The core 32 is provided with an insulating means such as an insulating coating so as to be insulated from the coil 33.

  The coil 33 is wound around the tooth 35 of the core 32 and is electrically connected to the commutator. As the material of the coil 33, the same material as a known permanent magnet type DC commutator motor such as a copper wire can be used.

  The end cap 13 is a bottomed cylindrical body, and includes a bearing (not shown) disposed at the center of the bottom, a brush (not illustrated) disposed so as to contact the commutator of the armature 12, and a bottom portion. And two terminals (not shown) electrically connected to the brush. The opening end is fitted into the opening end of the case 11 and attached to the case 11. The end cap 13 can be the same as a known permanent magnet type DC commutator motor, and thus detailed description thereof is omitted.

  The bearing is disposed at the center of the bottom portion of the end cap 13 so as to rotatably hold the shaft 31 of the armature 12. A bearing similar to a known permanent magnet type DC commutator motor can be used.

  The brush contacts the commutator of the armature 12 and conducts current. The terminal is a terminal for inputting an external power source. The brush and the terminal can be the same as a known permanent magnet type DC commutator motor.

  The motor 1 of the present embodiment is characterized in that the case 11 has a field magnet portion 21 magnetized as a permanent magnet, and is not limited to the above configuration. For example, the case 11, the armature 12, Changes in the shape and configuration of the end cap 13, auxiliary yokes (not shown) that reduce leakage magnetic flux, washers (not shown) that make the gap in the axial direction appropriate, cooling fans (not shown), etc. An optimum configuration can be adopted as appropriate with reference to known motors such as addition. The same applies to the motors 2, 3, 4, 5, 6, 7, 110, 120, 130, and 140 of the second to eleventh embodiments.

  In the motor 1 of the present embodiment, the armature 12 is rotated by electromagnetic force when a voltage is applied to the terminal, similarly to a known permanent magnet type DC commutator motor. Since the operation is the same as that of a known permanent magnet type DC commutator motor, detailed description thereof is omitted.

  The motor 1 of the present embodiment has a field magnet portion 21 magnetized as a permanent magnet in the case 11, and the field magnet portion 21 forms a magnetic field necessary for the rotation of the armature 12. No permanent magnet is required. As a result, the step of incorporating the permanent magnet into the case 11 becomes unnecessary, and the cost can be reduced. In addition, the gap between the case 11 and the armature 12 can be reduced without being limited by the thickness of the permanent magnet, and downsizing can be realized.

  It is also possible to constitute a generator (not shown) having a field magnet portion magnetized as a permanent magnet in the case and having no permanent magnet as a component in the same manner as the motor 1 of the present embodiment. is there.

  FIG. 3 is a radial cross-sectional view of the motor 2 according to the second embodiment of the present invention. The same components as those of the motor 1 of the first embodiment shown in FIGS. 1 and 2 are denoted by the same reference numerals, and description thereof is omitted. The motor 2 of this embodiment has the same basic configuration as the motor 1 of the first embodiment, but the number of poles of the field magnet portion 21 of the case 41 and the number of slots of the core 44 of the armature 42 are different. .

  The case 41 includes a total of four field magnet portions 21 magnetized as permanent magnets so that the direction of the magnetic poles is different every 90 degrees in the cylindrical portion. The core 44 of the armature 42 is a 7-slot armature core in which seven teeth 45 are formed in the radial direction.

  Like the motor 2 of the present embodiment, in the motor and generator of the present invention, the number of poles of the field magnet portion and the number of slots of the core are not limited to specific numbers, and are appropriately set to optimum numbers. can do.

  FIG. 4 is a radial cross-sectional view of the motor 3 according to the third embodiment of the present invention. The same components as those of the motor 1 of the first embodiment shown in FIGS. 1 and 2 are denoted by the same reference numerals, and description thereof is omitted. The motor 3 of the present embodiment is a so-called slotless motor, but does not have a permanent magnet as a component, but has a field magnet portion 21 magnetized as a permanent magnet in the case 11.

  The motor 3 includes a case 11 that is a stator, an armature 51 that is a rotor having no slot (tooth), and an end cap 13. The armature 51 includes a shaft 31, a core 52 that is a cylindrical armature core, and a coil 53 that is wound around the outer periphery of the core 52 without a gap and is fixed with synthetic resin, glass fiber, or the like, and a current flows. Since the armature 51 can be the same as a known slotless motor, detailed description thereof is omitted.

  As in the motor 3 of the present embodiment, it is possible to form a slotless motor having the field magnet portion 21 magnetized as a permanent magnet in the case 11 and not having a permanent magnet as a component.

  FIG. 5 is a radial cross-sectional view of the motor 4 according to the fourth embodiment of the present invention. The same components as those of the motor 1 of the first embodiment shown in FIGS. 1 and 2 are denoted by the same reference numerals, and description thereof is omitted. The motor 4 of this embodiment is a so-called coreless motor, but does not have a permanent magnet as a component, but has a field magnet portion 21 magnetized as a permanent magnet in the case 11.

  The motor 4 includes a case 11 that is a stator, an armature 61 that is a rotor having no core, and an end cap 13. The armature 61 includes a shaft 31 and a coil 62 that is solidified into a bottomed cylindrical shape with the shaft 31 as a central axis by a synthetic resin, glass fiber, or the like and through which an electric current flows. Since the armature 61 can be the same as a known coreless motor, detailed description thereof is omitted.

  Like the motor 4 of this embodiment, it is also possible to constitute a coreless motor having the field magnet portion 21 magnetized as a permanent magnet in the case 11 and having no permanent magnet as a component.

  FIG. 6 is a radial cross-sectional view of the motor 5 according to the fifth embodiment of the present invention. The same components as those of the motor 1 of the first embodiment shown in FIGS. 1 and 2 are denoted by the same reference numerals, and description thereof is omitted. The motor 5 of this embodiment is a so-called axial gap type coreless motor, but does not have a permanent magnet as a component, but has a field magnet portion 21 magnetized as a permanent magnet in a case 71.

  The motor 5 includes a bottomed cylindrical case 71 as a stator, an armature 72 as a rotor housed in the case 71, and a disc cover 73 attached to the open end of the case 71. . Since the armature 72 and the cover 73 can be the same as those of a known axial gap type coreless motor, detailed description thereof is omitted.

  The case 71 has a total of four pole field magnet portions 21 magnetized as permanent magnets in a range of about 1/4 circle so that the direction of the magnetic poles is different every 90 degrees on the bottom surface, and the shaft 31 disposed in the center of the bottom portion. And four brushes 76 that are arranged so as to protrude from the bottom surface and contact a commutator piece 80 of an armature 72 described later to conduct current. Since the material of the case 71 is the same as that of the case 11 of the motor 1 of the first embodiment, the description thereof is omitted. The brush 76 may be the same as a known axial gap type coreless motor.

  The armature 72 includes a shaft 31, a disk body 78 fixed to the shaft 31, and a coil side 79 and a commutator piece 80 fixed to a surface of the disk body 78 facing the case 71.

  The coil side 79 and the commutator piece 80 have the same functions as the coil 33 and the commutator of the motor 1 of the first embodiment, respectively. The coil side 79 and the commutator piece 80 are integrally formed, and the commutator piece 80 is disposed on the inner side and the coil side 79 is disposed on the outer side. The coil side 79 and the commutator piece 80 are formed, for example, by subjecting a conductor such as a ring-shaped copper plate to photoetching or die cutting.

  The cover 73 includes a bearing 83 that rotatably holds the shaft 31. The bearing 83 can be the same as a known axial gap type coreless motor.

  In the motor 5 of the present embodiment, the armature 72 is rotated by the electromagnetic force generated by the magnetic field formed by the field magnet portion 21 of the case 71 and the current flowing through the coil side 79 of the armature 72.

  Like the motor 5 of the present embodiment, it is possible to configure an axial gap coreless motor that has the field magnet portion 21 magnetized as a permanent magnet in the case 71 and does not have a permanent magnet as a component. . If a large torque is required, the cover 73 can be provided with a field magnet portion.

  FIG. 7 is a radial cross-sectional view of the motor 6 according to the sixth embodiment of the present invention. The same components as those of the motor 1 of the first embodiment shown in FIGS. 1 and 2 are denoted by the same reference numerals, and description thereof is omitted. The motor 6 of this embodiment is a so-called brushless motor, but does not have a permanent magnet as a component, but has a field magnet portion 21 magnetized as a permanent magnet in a case 91.

  The motor 6 includes a case 91 that is a rotor, an armature 92 that is a stator housed in the case 91, an end cap (not shown), and an outer case 94 that houses the case 91 and the armature 92. And a drive circuit (not shown) for controlling the direction of the current flowing through the armature 92, and the case 91 is rotated by electromagnetic force. Since the armature 92, the end cap, the outer case 94, and the drive circuit can be the same as those of a known brushless motor, detailed description thereof is omitted.

  Case 91 is a cylindrical body with a top, and is inserted in the center of the top part, with a total of eight poles of field magnet part 21 arranged in the cylinder part and magnetized as a permanent magnet so that the direction of the magnetic poles is different every 45 degrees. And a shaft 96 that is fixed and serves as a rotating shaft. Since the material of the case 91 is the same as the material of the case 11 of the motor 1 of the first embodiment, the description thereof is omitted.

  The armature 92 includes a core 97 that is an armature core in which six teeth 98 are formed in the radial direction, a coil 33 that is wound around the teeth 98 of the core 97 and through which a current flows, and a Hall element that detects the rotational position of the case 91. (Not shown) is a so-called three-phase six-coil armature.

  The end cap includes a bearing (not shown) that rotatably holds the shaft 96 and a terminal connected to the drive circuit, and is attached to the open end of the outer case 94, and the case 91 and the armature 92 together with the outer case 94. To accommodate.

  The outer case 94 is a cylindrical body with a top, includes a bearing (not shown) that rotatably holds the shaft 96 at the center of the top, and accommodates the case 91 and the armature 92.

  The drive circuit controls the direction of the current flowing through the armature 92 based on the rotational position of the case 91 detected by the Hall element.

  Like the motor 6 of this embodiment, it is also possible to constitute a brushless motor that has the field magnet portion 21 magnetized as a permanent magnet in the case 91 and does not have a permanent magnet as a component.

  FIG. 8 is a cross-sectional view of a motor 7 according to a seventh embodiment of the present invention. The same components as those of the motor 1 of the first embodiment shown in FIGS. 1 and 2 are denoted by the same reference numerals, and description thereof is omitted. The motor 7 of the present embodiment is a so-called armature movable linear DC motor, but does not have a permanent magnet as a component, and is a field magnet magnetized as a permanent magnet on a base 101 that is a stator. Part 21.

  The motor 7 includes a base 101 that is a stator and an armature 102 that is a mover. By the magnetic field formed by the field magnet unit 21 of the base 101 and the current flowing through the coil 33 of the armature 102. The armature 102 moves linearly while levitating on the base 101 by the generated electromagnetic force. Since the armature 102 can be the same as a known armature movable linear DC motor, detailed description thereof is omitted.

  The base 101 is a long flat plate material, and field magnet portions 21 having different magnetic poles are alternately arranged in the longitudinal direction. Since the material of the base 101 is the same as the material of the case 11 of the motor 1 of the first embodiment, description thereof is omitted.

  The armature 102 includes a rectangular parallelepiped core 103 having three teeth 104 convex on the lower surface, a coil 33 that is wound around the teeth 104 and through which current flows, and three commutator pieces 105 disposed on the upper surface of the core 103. Is provided.

  The commutator piece 105 is in contact with a brush (not shown) connected to a power source, and conducts current to the coil 33 and controls the direction of current flowing through the coil 33.

  Like the motor 7 of this embodiment, it is also possible to constitute a linear motor having the field magnet portion 21 magnetized as a permanent magnet on the base 101 and having no permanent magnet as a component.

  FIG. 9 is a perspective view of the case 111 of the motor 110 according to the eighth embodiment of the present invention. The same components as those of the motor 1 of the first embodiment shown in FIGS. 1 and 2 are denoted by the same reference numerals, and description thereof is omitted. The motor 110 of the present embodiment has the same basic configuration as the motor 1 of the first embodiment, but the shape of the case 111 is different.

  The case 111 of the motor 110 according to the present embodiment is formed at two locations so that thick portions 112 formed so that a part of the peripheral wall protrudes toward the inner peripheral surface face each other. The meat portion 112 is the field magnet portion 21.

  FIG. 10 is a perspective view of the case 121 of the motor 120 according to the ninth embodiment of the present invention. The same components as those of the motor 1 of the first embodiment shown in FIGS. 1 and 2 are denoted by the same reference numerals, and description thereof is omitted. The motor 120 of this embodiment has the same basic configuration as the motor 1 of the first embodiment, but the shape of the case 121 is different.

  The case 121 of the motor 120 according to the present embodiment is formed at two locations so that the thick wall portions 122 formed so that a part of the peripheral wall protrudes toward the outer peripheral surface face each other. The part 122 is the field magnet part 21.

  According to the motors 110 and 120 of the eighth and ninth embodiments, the case magnets 21 and 121 (field magnet part 21) are formed because the field magnet parts 21 of the cases 111 and 121 are formed thick. The strength of the magnetic field can be improved. The motor and the generator of the present invention are not limited to the thick-walled portions 112 and 122 as the field magnet portion 21, and the thick-walled portions 112 and 122 may be the non-magnet portion 22. The field magnet part 21 and the non-magnet part 22 may be mixed in the parts 112 and 122. Moreover, the shape and arrangement | positioning of the thick parts 112 and 122 are not limited to a specific thing, For example, the thick parts 112 and 122 may be formed in one place or three places or more.

  FIG. 11 is a perspective view of the case 131 of the motor 130 according to the tenth embodiment of the present invention. The same components as those of the motor 1 of the first embodiment shown in FIGS. 1 and 2 are denoted by the same reference numerals, and description thereof is omitted. The motor 130 of the present embodiment has the same basic configuration as the motor 1 of the first embodiment, but the shape of the case 131 is different.

  The case 131 of the motor 130 according to the present embodiment is formed at two locations so that convex portions 132 that are deformed so that a part of the peripheral wall protrudes toward the inner peripheral surface face each other. The magnet portion 21 is provided.

  Like the motor 130 of the present embodiment, the magnetic field formed by the case 131 (field magnet portion 21) can be changed by partially forming the convex portion 132 on the case 131. In addition, the motor and generator of this invention are not limited to what the convex part 132 makes the field magnet part 21, The convex part 132 is good also as the non-magnet part 22, and the field magnet part is formed in the convex part 132. 21 and the non-magnet part 22 may be mixed.

  The shape and arrangement of the protrusions 132 are not limited to specific ones. For example, the tip may be formed in an acute angle or arc shape, or may be formed in one place or three or more places. Moreover, it may replace with the convex part 132 and the recessed part (illustration omitted) which dented a part of surrounding wall from the inner peripheral surface side may be formed, and the convex part 132 and a recessed part may be formed.

  FIG. 12 is a perspective view of the case 141 of the motor 140 according to the eleventh embodiment of the present invention. The same components as those of the motor 1 of the first embodiment shown in FIGS. 1 and 2 are denoted by the same reference numerals, and description thereof is omitted. The motor 140 of the present embodiment has the same basic configuration as the motor 1 of the first embodiment, but the shape of the case 141 is different.

  The case 141 of the motor 140 according to the present embodiment has four through holes 142 formed through the peripheral wall in a rectangular shape within a range of 1/8 circle every 90 °, and the case 131 is formed in a radial shape. The region where the through-hole 142 is formed when divided into eight is the non-magnet portion 22, and the region where the through-hole 142 is not formed is the field magnet portion 21.

  Like the motor 140 of this embodiment, by forming the through hole 142 in the case 141, the magnetic field formed by the case 141 (field magnet portion 21) can be changed and the weight can be reduced. . In the motor and generator of the present invention, the shape and arrangement of the through holes 142 are not limited to specific ones. For example, a punching metal is used as a material for the case, and a plurality of circular through holes are formed. It is also possible to form regularly arranged cases.

  The motor and generator of the present invention have been described above using the motors 1, 2, 3, 4, 5, 6, 7, 110, 120, 130, and 140 according to the first to eleventh embodiments. The motor and the generator are not limited to the above-described embodiment, and can be modified and used without changing the gist. For example, the armature is not limited to a substantially circular shape in cross-sectional view, and an elliptical shape or the like can also be used.

  Further, when the case is formed of a material that can be plastically processed, the shape of the case (structure having a field magnet portion) is partially changed like the motors 110, 120, 130, and 140 of the eighth to eleventh embodiments. It can also be easily deformed. The shape of the case (the structure having the field magnet portion) is not limited to the shape described above. For example, a gear or the like may be formed on the outer peripheral surface, and the protrusion for positioning with other components Or a groove | channel etc. may be formed and it can be made into the optimal shape suitably according to a use.

  Moreover, the thick part, the convex part, the concave part, the through hole, etc. formed in the case (the structure having the field magnet part) are not limited to those forming a plurality of the same shape, but are used and required. It is also possible to form a plurality of different shapes depending on performance or the like. Further, the case (the structure having the field magnet portion) may be formed with a mixture of thick portions, convex portions, concave portions, through holes, and the like.

  As described above, the preferred embodiments have been described with reference to the drawings. However, those skilled in the art will readily understand various changes and modifications within the obvious scope by looking at the present specification. Therefore, such changes and modifications are interpreted as being within the scope of the invention defined by the claims.

1, 2, 3, 4, 5, 6, 7, 110, 120, 130, 140 Motor 11, 41, 71, 91, 111, 121, 131, 141 Case 12, 42, 51, 61, 72, 92, 102 Armature 21 Field magnet part 22 Non-magnet part 33, 53, 62 Coil 79 Coil side 101 Base 112, 122 Thick part 132 Convex part 142 Through hole

Claims (5)

In a motor or generator comprising an armature having a coil and a field magnet that forms a magnetic field,
Comprising a structure close to the armature;
The field magnet is a field magnet portion formed integrally with the structure and magnetized as a permanent magnet,
The motor or generator, wherein the field magnet section forms a magnetic field.   The motor or generator according to claim 1, wherein the structure is formed by plastic working.   The structure has a thick part that is partially thick, a convex part that is partially protruded, a concave part that is partially recessed, or a partially formed penetration The motor or generator according to claim 1, wherein the motor or generator has at least one of the holes. The structure has the field magnet part and a non-magnet part that is not magnetized as a permanent magnet,
The motor or generator according to any one of claims 1 to 3, wherein the field magnet portion and the non-magnet portion are made of different materials. The structure is a case that houses the armature;
5. The motor or generator according to claim 1, wherein either the case or the armature rotates.

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