JP6350613B2 - Rotating electric machine - Google Patents

Description

  The present invention relates to a rotating electrical machine, and more particularly to a configuration of a stator unit.

  A rotating electrical machine such as an electric motor has a rotor and a stator arranged with a gap therebetween. Here, a radial gap type rotating electrical machine has a direction in which the rotor and the stator are opposed to each other in a direction perpendicular to the rotational axis, and an axial gap type rotating electrical machine has a direction along the rotational axis.

  As a configuration of a stator core according to the prior art, Patent Document 1 discloses a stator core used in a radial gap type rotating electrical machine. The stator core disclosed in Patent Document 1 is configured by superposing a plurality of substantially T-shaped steel plates. Each steel plate is formed by punching an electromagnetic steel plate such as a silicon steel plate. And in the stator core of patent document 1, the steel plate is piled up in the direction along a rotating shaft.

  Patent Document 2 discloses a stator core used in an axial gap type rotating electrical machine. The stator core disclosed in Patent Document 2 is configured by stacking a plurality of strip-shaped steel plates. Also in this structure, each steel plate is formed from electromagnetic steel plates, such as a silicon steel plate. In the stator core disclosed in Patent Document 2, steel plates are overlapped in the radial direction.

JP 2001-95181 A JP, 2015-180147, A

  However, in motors and the like, higher torque is required while avoiding an increase in size, but it is considered difficult to realize this demand with the configuration of the stator core disclosed in Patent Documents 1 and 2. Specifically, when a stator is configured using the stator core disclosed in Patent Document 1, a coil is wound around a tooth portion that faces the rotating shaft. Therefore, the coils must be set to sizes that do not interfere with each other in the circumferential direction, and it is difficult to further increase the torque while avoiding an increase in size.

  Further, when a stator is configured using the stator core disclosed in Patent Document 2, it is necessary to wind a coil around a plurality of fan-shaped stator cores in plan view and to arrange them in the circumferential direction. For this reason, even in the technique disclosed in Patent Document 2, the size of the coil is limited, and it is difficult to further increase the torque while avoiding an increase in size.

  In addition, in a rotating electrical machine having a split core as disclosed in Patent Documents 1 and 2, it is also necessary to maintain a precise position of each stator core with respect to the rotor over a long period of time. If the position of the stator core is shifted, it is difficult to obtain a high torque.

  Further, in a rotating electrical machine such as a motor, it is necessary to suppress an increase in coil temperature in the stator unit during driving. That is, if the temperature of the coil or the like rises excessively by driving, the life of the rotating electrical machine is shortened. For this reason, cooling of the coil or the like during driving is also an important problem.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a rotating electrical machine that can achieve high torque and has a long life.

  A rotating electrical machine according to an aspect of the present invention includes a stator, a rotor, and an annular fixing portion.

  The stator includes a plurality of stator cores arranged in the circumferential direction at intervals, and a coil wound around each stator core.

  The rotor includes a rotating shaft and a plurality of permanent magnets that are arranged to face each other with an interval between end surfaces of the plurality of stator cores.

  The annular fixing portion is an annular tube body, and fixes the plurality of stator cores in a state where the plurality of coils are housed in the tube.

  In the rotating electrical machine according to this aspect, each of the plurality of stator cores is a laminated body in which a plurality of thin plate materials made of an amorphous soft magnetic material are laminated, and when viewed from the side in the circumferential direction, the stator core extends along the axial direction. It consists of a trunk | drum and an arm part extended | stretched to the axial direction outer side from the said trunk | drum.

Further, in the rotating electrical machine according to this aspect, the coil is wound around the body portion of the stator core, and is arranged in a state spaced apart from a part of the inner wall surface of the annular fixing portion, The arm portion of the stator core is extended outward from a window portion provided in the annular fixing portion while maintaining a liquid-tight state.
The annular fixing portion includes an outer peripheral ring and an inner peripheral ring that are spaced apart in the radial direction, and a pair of side wall plates that close both sides in the axial direction and sandwich the coil from both sides. . Each of the pair of side wall plates is provided with the window portion that allows the arm portion to extend, and the side wall plate is divided into two in the radial direction. It is configured with a combination with a side fixing plate.
Furthermore, the inner diameter side fixing plate and the outer diameter side fixing plate are engaged with each other while maintaining a liquid-tight state.

  In the rotating electrical machine according to this aspect, a laminate of thin plate materials made of an amorphous soft magnetic material is used as a stator core in the stator. In a stator core made of such a laminate, iron loss (vortex loss) can be significantly reduced compared to a stator core using grain-oriented electrical steel sheets or silicon steel sheets. Therefore, in the rotating electrical machine according to this aspect, it is possible to achieve a higher torque than the rotating electrical machine according to the related art.

  In the rotating electrical machine according to this aspect, the plurality of stator cores are fixed to the annular fixing portion. For this reason, in the rotary electric machine which concerns on this aspect, it can fix reliably, maintaining the positional accuracy of several stator cores highly. Therefore, it is advantageous for achieving high torque.

  Moreover, in the rotary electric machine which concerns on this aspect, the coil is accommodated in the pipe | tube in a cyclic | annular fixed part, and the inside of a pipe | tube is a liquid-tight state. For this reason, a cooling liquid can be introduce | transduced in the pipe | tube of an annular fixed part, and cooling of a coil can be aimed at. Therefore, in the rotating electrical machine according to this aspect, even when the driving is performed for a long time, the deterioration can be suppressed and the life is long.

In the rotating electrical machine according to this aspect, the positioning and fixing of the plurality of stator cores and the cooling of the coil can be performed with the configuration of the annular fixing portion, so that the configuration can be simplified and the rotation can be performed. It becomes possible to suppress the increase in size of the electric machine.
In the rotating electrical machine according to this aspect, the annular fixing portion is configured by a combination of the outer peripheral ring, the inner peripheral ring, and the pair of side wall plates. Therefore, since the assembly is simple and easy to assemble, positioning and fixing of the plurality of stator cores and cooling of the coils can be realized while suppressing an increase in manufacturing cost.
Further, in the rotating electrical machine according to this aspect, the side wall plate is constituted by a combination of the inner diameter side fixing plate and the outer diameter side fixing plate, so that no complicated work is required in manufacturing the stator, and Ease can be ensured. Therefore, an increase in manufacturing cost can be suppressed.

  Therefore, in the rotating electrical machine according to this aspect, the torque can be increased and the service life is long.

  In the rotating electrical machine according to another aspect of the present invention, in the above configuration, a gap is provided between the outer ring, the inner ring, and the coil.

  In the rotating electrical machine according to this aspect, the coolant can be introduced into the gap between the outer ring and the inner ring and the coil. As a result, the coil can be efficiently cooled, and high quality can be maintained even during long-term use.

  In the rotating electrical machine according to another aspect of the present invention, in the configuration described above, the inner diameter side fixing plate protrudes from the outer periphery of the annular portion toward the outer side in the radial direction, and is circumferential with respect to each other. A plurality of tooth portions spaced apart from each other are integrally formed.

  The outer diameter side fixing plate is integrally formed with an annular ring part and a plurality of tooth parts protruding radially inward from the inner periphery of the annular part and spaced apart from each other in the circumferential direction. Formed.

  Each end side of the plurality of tooth portions in the inner diameter side fixing plate is formed as a single cylinder in the plate thickness direction, and each end side of the plurality of tooth portions in the outer diameter side fixing plate is in the plate thickness direction. It has a one-cylinder shape.

  In the rotating electrical machine according to this aspect, the end sides of the plurality of tooth portions in the inner diameter side fixing plate and the end sides of the plurality of tooth portions in the outer diameter side fixing plate are in a phase-separated state. Is engaged.

  In the rotating electrical machine according to this aspect, each end side of the tooth portion in the inner diameter side fixing plate and each end side of the tooth portion in the outer diameter side fixing plate are engaged with each other, so that the liquid tightness in the pipe is increased. Can be maintained. Therefore, the coil can be cooled with high efficiency, which is advantageous in extending the service life.

  In the rotating electric machine according to another aspect of the present invention, in the above configuration, a cooling liquid supply port for introducing a cooling liquid for cooling the coil and a cooling for discharging the cooling liquid are provided in the outer peripheral ring. And a liquid discharge port.

  In the rotating electrical machine according to this aspect, the coolant supply port and the coolant discharge port are provided in the outer ring, so that piping connection and the like related to supply and discharge of the coolant is easy.

  The rotary electric machine which concerns on another aspect of this invention is further provided with the motor case which covers the said stator and the said rotor from the axial direction outer side in the said structure. A recess groove is provided on the inner surface side of the motor case to receive a part of each of the plurality of stator cores.

  In the rotating electrical machine according to this aspect, a recess groove is provided on the inner surface side of the motor case, and the insertion of each part of the stator core can be received in the recess groove. Therefore, a plurality of stator cores are fixed not only in the annular fixing portion but also in the motor case, and the stator core can be positioned and fixed more reliably.

  In the rotating electric machine according to another aspect of the present invention, in the above configuration, in each of the plurality of stator cores, the arm portion is bent so that the end face faces radially inward.

  In the rotating electrical machine according to this aspect, in each stator core, the arm portion is bent with the end face facing inward in the radial direction, so that the body portion around which the coil is wound is arranged radially outward with respect to the rotor. Will be. Therefore, the rotating electrical machine according to this aspect is not easily limited by the number of turns of the coil around the stator core, and is advantageous for achieving high torque.

  In the rotating electric machine according to another aspect of the present invention, in the above-described configuration, in each of the plurality of stator cores, the stacking direction of the thin plate material in the body portion is a radial direction, and the stacking interface on the end surface is an axial direction and a diameter. Stretch in a direction perpendicular to the two directions.

  In the rotating electrical machine according to this aspect, the flow of magnetic flux between the stator and the rotor can be made smooth by adopting the above-described form for the stator core. In particular, the flow of magnetic flux in the circumferential direction can be improved. Therefore, this aspect is advantageous for achieving high torque.

  In the rotating electric machine according to another aspect of the present invention, in the configuration described above, in each of the plurality of stator cores, the end surface is configured by a curved surface centering on the rotating shaft and along the outer peripheral surface of the rotor.

  In the rotating electrical machine according to this aspect, the gap between the end surface of the stator core and the permanent magnet of the rotor can be kept small by making the end surface of the stator core a curved surface along the rotor. Therefore, the rotating electrical machine according to this aspect is superior in achieving high torque while avoiding an increase in size.

  The rotating electrical machine according to each aspect described above can achieve high torque and has a long life.

1 is a schematic development view showing a configuration of a motor 1 according to a first embodiment of the present invention. FIG. 2 is a schematic development view showing a configuration of a stator unit 10 in the motor 1. (A) is a schematic development view showing a process related to the assembly of the inner diameter side fixed plates 103, 104 and the inner peripheral ring 102, and (b) is a schematic development view showing a process related to the attachment of the core coil set 100. It is. 2 is a schematic diagram showing a configuration of a stator unit 10. FIG. (A) is a schematic perspective view which shows the structure of the core coil set 100, (b) is a schematic side view which shows the structure of the stator core 1000 in the core coil set 100. FIG. It is a figure which shows the formation process of the stator core 1000 in order, Comprising: (a) is a schematic diagram which shows the formation process of the wound body 10001, (b) is a schematic diagram which shows the formation process of the core element | base_body 10002. . (A) is a schematic diagram which shows the process which concerns on formation of end surface 1000a, 1000b, (b) is a schematic diagram which shows the process which concerns on fixation of the supporting member 1001. (A) is a schematic diagram which shows the process which concerns on formation of the bobbin 1002, (b) is a schematic diagram which shows the process which concerns on formation of the coil 1003. 2 is a schematic development view showing a configuration of a rotor unit 11. FIG. It is a schematic diagram which shows the attachment method of the permanent magnet 1102 with respect to the base ring 1100 and the back yoke 1101, (a) and (b) shows the state before attachment, (c) and (d) are the states after attachment. Indicates. 4 is a schematic perspective view showing the core coil set 100, the first rotor 110, and the second rotor 111 extracted from the configuration of the motor 1. FIG. (A) And (b) is a schematic diagram which shows the flow of the magnetic flux at the time of the drive of the motor 1. FIG. (A) is a schematic diagram which shows the structure of the core coil set 200 with which the motor which concerns on 2nd Embodiment of this invention is equipped, (b) and (c) are at the time of the drive of the motor which concerns on 2nd Embodiment. It is a schematic diagram which shows the flow of magnetic flux. (A) is a schematic diagram which shows the structure of the core coil set 300 with which the motor which concerns on 3rd Embodiment of this invention is equipped, (b) is the core coil set with which the motor which concerns on 4th Embodiment of this invention is equipped. 4 is a schematic diagram showing the configuration of 400. FIG. (A) is a schematic diagram which shows the structure of the core coil set 500 with which the motor which concerns on 5th Embodiment of this invention is equipped, (b) is a schematic diagram which shows the structure of the stator core 5000 in the core coil set 500. (C) is a schematic diagram which shows the structure of the core coil set 600 with which the motor which concerns on 6th Embodiment of this invention is provided. (A) And (b) is a schematic diagram which shows a partial structure of the core coil set with which the motor which concerns on 7th Embodiment of this invention is provided. It is a schematic cross section which shows the structure of the stator unit 80 with which the motor which concerns on 8th Embodiment of this invention is provided.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The form described below is one embodiment of the present invention, and the present invention is not limited to the following form except for the essential configuration.

[First Embodiment]
1. Configuration The configuration of the motor 1 according to the first embodiment of the present invention will be described with reference to FIG. FIG. 1 is a schematic development view showing the configuration of the motor 1.

  As shown in FIG. 1, the motor 1 includes a stator unit 10, a rotor unit 11, and motor cases 12 and 13.

  The stator unit 10 has a ring shape, and is provided with a coolant supply port 10a that protrudes upward from the outer peripheral surface and a coolant discharge port 10b that protrudes downward from the outer peripheral surface. In the stator unit 10, twelve core coil sets 100 independent in slot units are arranged in the circumferential direction. A detailed configuration of the core coil set 100 will be described later.

  The rotor unit 11 has two rotors (a first rotor 110 and a second rotor 111) that are arranged with a gap in the X direction. The rotor unit 11 is provided with a rotating shaft 11a that protrudes toward both sides in the X direction. In the rotor unit 11, the whole including the rotating shaft 11a is integrally rotated around the axis of the rotating shaft 11a.

  Each of the motor cases 12 and 13 is integrally formed with ring-shaped peripheral walls 12c and 13c and disk-shaped end walls 12d and 13d, and has a circular shallow dish shape as a whole. Insertion holes 12a and 13a are formed in the central portions of the end walls 12d and 13d in the motor cases 12 and 13, respectively. The insertion holes 12a and 13a are holes through which the rotary shaft 11a in the rotor unit 11 is inserted. The motor cases 12 and 13 are made of a metal material such as an aluminum alloy, for example.

  Further, on the inner surface side of the motor cases 12 and 13, a plurality of recessed grooves 13 b are provided in the outer edge portion. In addition, about the recessed groove of the motor case 12, illustration is abbreviate | omitted. The recess grooves 13b of the motor cases 12 and 13 are grooves for receiving insertion of each part of the core coil set 100 protruding on both sides in the X direction in the stator unit 10. That is, by assembling the motor cases 12 and 13, the plurality of core coil sets 100 in the stator unit 10 can be more accurately positioned and securely fixed.

  As shown in FIG. 1, in the motor 1, the rotor unit 11 is rotatably inserted into the space in the radial center portion of the stator unit 10 and is covered with motor cases 12 and 13 from both sides in the X direction. The outer peripheral surface of the stator unit 10 is exposed to the outside while being sandwiched between the end sides of the motor case 12 and the motor case 13.

  Here, in the motor 1 according to the present embodiment, as an example, a radial gap type 12-slot, 8-pole motor is employed. However, the number of slots and the number of magnetic poles can be appropriately changed.

2. Configuration of Stator Unit 10 Next, the configuration of the stator unit 10 in the motor 1 will be described with reference to FIG. FIG. 2 is a schematic development view showing the configuration of the stator unit 10. FIG. 2 is a schematic developed view showing the configuration of the stator unit 10, and does not show the order in which the stator units 10 are formed.

  As shown in FIG. 2, the stator unit 10 includes 12 core coil sets 100, an outer ring 101, an inner ring 102, a pair of inner diameter side fixing plates 103 and 104, and a pair of outer diameter side fixing plates. 105, 106. The outer peripheral ring 101 and the inner peripheral ring 102 are made of a metal material such as an aluminum alloy, for example. On the other hand, the pair of inner diameter side fixing plates 103 and 104 and the pair of outer diameter side fixing plates 105 and 106 are made of, for example, a ceramic material.

  Here, when the pair of inner diameter side fixing plates 103 and 104 and the pair of outer diameter side fixing plates 105 and 106 are made of a ceramic material, it is desirable because they do not interfere with the magnetic field of the core coil set 100.

  The core coil set 100 is arranged between the outer ring 101 and the inner ring 102 so as to be spaced apart from each other in the circumferential direction. The core coil set 100 is arranged in a state of being spaced from both the outer ring 101 and the inner ring 102 in the radial direction.

  The outer peripheral ring 101 is provided with a coolant supply port 10a protruding upward in the Z direction and a coolant discharge port 10b protruding downward in the Z direction. The coolant supply port 10 a and the coolant discharge port 10 b are both cylindrical, and an inner hole (not shown) is inserted through the outer ring 101.

  Each of the inner diameter side fixing plates 103 and 104 is integrally formed with ring-shaped annular portions 103a and 104a and a plurality of tooth portions 103b and 104b protruding radially outward from the annular portions 103a and 104a. It will be. The number of teeth 103b and 104b in the inner diameter side fixed plates 103 and 104 is twelve. This is because each tooth part 103b, 104b is inserted between the core coil sets 100 adjacent in the circumferential direction. The outer periphery of the annular portions 103 a and 104 a and the side sides of the tooth portions 103 b and 104 b abut against the stator core in the core coil set 100 in a liquid-tight state.

  Each of the outer diameter side fixing plates 105 and 106 is integrally formed with ring-shaped annular portions 105a and 106a and a plurality of tooth portions 105b and 106b projecting radially inward from the annular portions 105a and 106a. It will be. The number of tooth portions 105b and 106b in the outer diameter side fixing plates 105 and 106 is also twelve. Similarly to the above, in the outer diameter side fixing plates 105 and 106, the tooth portions 105b and 106b are inserted between the core coil sets 100 adjacent in the circumferential direction. The inner periphery of the annular portions 105 a and 106 a and the sides of the tooth portions 105 b and 106 b abut against the stator core in the core coil set 100 in a liquid-tight state.

  Here, at the tip of each tooth portion 103b, 104b of the inner diameter side fixing plates 103, 104, a portion (single cylinder portion 104c) having a partly thin plate thickness is provided. In addition, although illustration is abbreviate | omitted, also in the internal diameter side fixed plate 103, the one cylinder part is provided in the front-end | tip part of the tooth | gear part 103b.

  Similarly, at the tip of each tooth portion 105b, 106b of the outer diameter side fixing plates 105, 106, there is provided a portion (single cylinder portion 106b) with a partly thin plate thickness. Although not shown, the outer diameter side fixing plate 105 is also provided with a one-sided portion at the tip of the tooth portion 105b.

  As shown in FIG. 3, each piece cylinder portion of the inner diameter side fixing plate 103 and each piece cylinder portion of the outer diameter side fixing plate 105 are engaged in a liquid-tight state, and similarly, the inner diameter side fixing plate 104. Each cylinder portion 104c (see FIG. 2) and each cylinder portion 106c (see FIG. 2) of the outer diameter side fixing plate 106 are engaged in a liquid-tight state.

3. Formation of Stator Unit 10 A method for forming the stator unit 10 will be described with reference to FIGS.

  First, as shown in FIG. 3A, the inner diameter side fixing plate 103 and the inner diameter side fixing plate 104 are joined to the inner peripheral ring 102. The inner peripheral ring 102 has an end face joined to inner peripheral edge portions of the annular portions 103a and 104a in the inner diameter side fixed plates 103 and 104.

  For joining the inner diameter side fixing plates 103 and 104 to the inner ring 102, for example, a joining method using an adhesive can be employed.

  Next, as shown in FIG.3 (b), with respect to a pair of inner diameter side fixed plates 103 and 104 arranged at intervals in the X direction, a valley portion between the tooth portions 103b and 104b in the circumferential direction The core coil set 100 is joined in order. The outer periphery of the annular portions 103 a and 104 a of the inner diameter side fixed plates 103 and 104 and the side sides of the teeth portions 103 b and 104 b abut against the stator core in the core coil set 100 in a liquid-tight state. In this embodiment, in order to further ensure the liquid-tight state, the outer periphery of the annular portions 103a and 104a of the inner diameter side fixed plates 103 and 104, the side sides of the tooth portions 103b and 104b, and the stator core Apply adhesive in between.

  Next, as shown in FIG. 4, after joining one of the pair of outer diameter side fixing plates 105, 106, the outer peripheral ring 101 is joined. Finally, the other of the pair of outer diameter side fixing plates 105 and 106 is joined to complete the stator unit 10.

  The method for joining the outer diameter side fixing plates 105 and 106 and the outer peripheral ring 101 is the same as the method for fixing the inner diameter side fixing plates 103 and 104 and the inner peripheral ring 102.

  Further, as shown in the portion surrounded by the two-dot chain line in FIG. 4, the inner diameter side fixing plates 103 and 104 and the outer diameter side fixing plates 105 and 106 are engaged with each other by the one-side barrel portions 104c and 106c. A liquid-tight state at the part is formed. In the bonding, bonding with an adhesive is also used.

  As shown in a portion surrounded by a two-dot chain line in FIG. 4, the core coil set 100 includes a stator core 1000, a support member 1001, a bobbin 1002, and a coil 1003. The detailed configuration of the core coil set 100 will be described later.

  When the outer ring 101 and the inner ring 102, the inner diameter side fixing plates 103 and 104, and the outer diameter side fixing plates 105 and 106 are assembled to the core coil set 100, the outer ring 101 and the coil 1003 A gap 10c is formed between the inner ring 102 and the coil 1003, and a gap 10d is formed between the inner ring 102 and the coil 1003. Although not shown, a gap is also formed between the coils 1003 adjacent in the circumferential direction.

  Coolant flows through the gaps 10c and 10d and the gap between the coils 1003. The coolant is introduced from the coolant supply port 10a, flows between the gaps 10c and 10d and the coils 1003, and is then discharged from the coolant discharge port 10b.

  By thus cooling the core coil set 100, the coil 1003 and the like can be protected from heat due to copper loss, iron loss, mechanical loss, and the like.

  In addition to the bonding method using an adhesive, the inner diameter side fixing plates 103 and 104 and the outer diameter side fixing plates 105 and 106 and the outer ring 101 and the inner ring 102 are bonded together by welding. It is also possible to employ a bonding method using (thermal, ultrasonic welding).

4). Configuration of Core Coil Set 100 The configuration of the core coil set 100 will be described with reference to FIG.

  As shown in FIG. 5A, the core coil set 100 includes a stator core 1000, a support member 1001, a bobbin 1002, and a coil 1003. The stator core 1000 according to the present embodiment is U-shaped or C-shaped in a side view from the Y direction. The end faces 1000a and 1000b on both sides of the stator core 1000 are each subjected to curved processing on the YZ plane having the center in the Z direction. This is along the outer peripheral surfaces of the first rotor 110 and the second rotor 111, and the distance between the end surfaces 1000 a and 1000 b of the stator core 1000 and the permanent magnets of the first rotor 110 and the second rotor 111 is set. This is to make it narrower.

  The support member 1001 is made of an electrically insulating material (for example, a ceramic material), and is joined to the upper and lower main surfaces of the central portion (body portion) in the X direction of the stator core 1000.

  The bobbin 1002 is formed so as to cover the four main surfaces with respect to the body portion of the stator core 1000. The bobbin 1002 is made of an electrically insulating material (for example, an electrically insulating resin material), and is provided so as to be substantially flush with the end surface of the support member 1001 in the X direction.

  Note that as a material for forming the bobbin 1002, a material in which glass fibers or fillers are dispersed can be used in consideration of heat dissipation, mechanical strength, and the like.

  The coil 1003 is wound around the bobbin 1002. In the present embodiment, a coil 1003 configured by edgewise winding of a rectangular wire is employed. However, it is also possible to appropriately employ a coil using a coil wire having a circular cross section or an oval cross section.

  As shown in FIG. 5B, the stator core 1000 is a laminated body in which a plurality of thin plate materials made of an amorphous soft magnetic material are laminated. The plate thickness of each thin plate material is 0.05 mm or less (for example, 0.025 mm). The laminating direction of the thin plate materials is the Z direction at the body portion (center portion in the X direction). In other words, the interface between the thin plate materials extends in a direction perpendicular to the paper surface.

  In the stator core 1000, both sides of the body portion are bent downward in the Z direction, and the end faces 1000a and 1000b are formed to face downward in the Z direction.

5. Method for Forming Core Coil Set 100 (1) Method for Forming Stator Core 1000 The method for forming the stator core 1000 will be described with reference to FIGS. 6 (a), 6 (b) and 7 (a).

  First, as illustrated in FIG. 6A, a strip-shaped thin plate material 10000 is wound around the outer periphery of a rounded quadrangular winding die 900 in plan view to form a wound body 10001. Here, the strip-shaped thin plate material 10000 is made of an amorphous soft magnetic material and has a plate thickness of 0.05 mm or less (for example, 0.025 mm).

  The wound body 10001 is bonded between the thin plate materials 10000 using a vacuum impregnation bonding method. By using the vacuum impregnation bonding method in this way, it is effective to increase the mechanical strength of the stator core 1000 and to form the stator core 1000 that can sufficiently withstand the motor rotation at high torque.

  Next, as shown in FIG. 6B, the wound body 10001 that has been hardened by using the vacuum impregnation bonding method is cut along one cutting line to form two core element bodies 10002.

  In the present embodiment, the two core element bodies 10002 are cut out from the wound body 10001, but one core element body may be cut out, or three or more core element bodies may be cut out. You can also.

  Next, as shown in FIG. 7A, grinding is performed on both end faces of the core body 10002. The grinding process for the end face is for forming a curved surface having a curvature radius R having a center in the Z direction. The curvature radius R is a curvature radius corresponding to the radii of the corresponding first rotor 110 and second rotor 111. Specifically, the radius of curvature R is a value obtained by adding a gap to each radius of the first rotor 110 and the second rotor 111.

  By the above grinding process, the stator core 1000 having the curved end faces 1000a and 1000b is completed. Here, the stator core 1000 has a U-shaped or C-shaped appearance in a side view from the Y direction.

  In the stator core 1000, the portion along the X direction of the central portion in the X direction is referred to as the trunk portion 1000c, and the side portions in the X direction of the trunk portion 1000c and the arc-shaped portions as viewed from the side are referred to as the arm portions 1000d and 1000e.

(2) Method for Forming Support Member 1001 and Bobbin 1002 A method for forming the support member 1001 and the bobbin 1002 on the completed stator core 1000 will be described with reference to FIGS. 7B and 8A.

  As shown in FIG. 7B, the support member 1001 is attached to the upper and lower surfaces in the Z direction with respect to the body portion 1000 c in the stator core 1000. The support member 1001 is made of an electrically insulating material (for example, a ceramic material). An adhesive can be used for attaching the support member 1001. Note that the support member 1001 may be attached to both sides in the Y direction of the body portion 1000c of the stator core 1000. This will be described later.

  Next, as shown in FIG. 8A, a bobbin 1002 is formed so as to surround four sides with respect to the body portion 1000 c in the stator core 1000. As a forming material of the bobbin 1002, an electrically insulating resin material can be used, and an insert molding method can be used as the forming method.

  Here, when the bobbin 1002 is formed by the insert molding method, the other exposed surface of the stator core 1000 is also coated with a film made of the same material (electrically insulating resin material) as the bobbin 1002 forming material. It will be. Thereby, electrical insulation with motor cases 12 and 13 etc. can be aimed at.

  In the present embodiment, the bonding strength of the bobbin 1002 to the stator core 1000 can be increased by using an insert molding method for forming the bobbin 1002.

(3) Formation Method of Coil 1003 A formation method of the coil 1003 with respect to the stator core 1000 will be described with reference to FIG.

  As shown in FIG. 8 (b), a coil wire 10030 wound in a coil shape using a winding die or the like in advance is prepared.

  Next, while loosening the winding of the coil wire 10030, the coil wire 10030 is moved from the end surface 1000a of the stator core 1000 to the outer peripheral portion of the bobbin 1002, and the formation of the coil 1003 is completed.

  As described above, the coil 1003 according to this embodiment is a coil formed by edgewise winding a rectangular wire.

  Here, in this embodiment, the coil wire 10030 that has been previously wound is loosened and transferred to the stator core 1000. In addition to this, a rectangular wire is edgewise wound directly around the bobbin 1002. May be. However, by adopting a method as shown in FIG. 8B, it becomes possible to reduce the stress strain at the time of winding.

  In the present embodiment, the coil space factor is increased by using a coil 1003 formed by edgewise winding a rectangular wire, which is effective for increasing the torque of the motor 1 while avoiding an increase in size. .

  As described above, the core coil set 100 is completed.

6). Configuration of Rotor Unit 11 Next, the configuration of the rotor unit 11 will be described with reference to FIG. FIG. 9 is a schematic development view showing the configuration of the rotor unit 11.

  As shown in FIG. 9, the rotor unit 11 includes a first rotor 110 and a second rotor 111, a spacer ring 112, and cover plates 113 and 114.

  Each of the first rotor 110 and the second rotor 111 includes a ring-shaped base ring 1100, a back yoke 1101 joined to the outer peripheral surface of the base ring 1100, and a state aligned in the circumferential direction on the outer peripheral surface of the back yoke 1101. 8 pole permanent magnets 1102 joined together. Both ends of the permanent magnet 1102 are hooked by clips 1103, and protrusions are formed on the tips of the clips 1103 toward the outside in the X direction.

  In FIG. 9, the detailed illustration of the second rotor 111 is omitted, but it has the same configuration as the first rotor 110.

  The spacer ring 112 inserted between the first rotor 110 and the second rotor 111 has a ring-shaped peripheral wall 112a and a radial direction from both sides in the width direction, as shown in a portion surrounded by a two-dot chain line in FIG. And inward flange walls 112b and 112c having a width are integrally formed. Although not shown, holes are formed in the inward flange walls 112b and 112c to accept insertion of protrusions of the clips 1103 of the first rotor 110 and the second rotor 111.

  Each of the cover plates 113 and 114 has a disk shape, and an insertion hole 113a that allows the rotation shaft 11a to pass therethrough is formed in the center portion. The rotating shaft 11a rotates integrally with the cover plates 113 and 114, the first rotor 110 and the second rotor 111, the spacer ring 112, and the like.

  Although not shown, the cover plates 113 and 114 are also provided with holes for receiving insertion of the protrusions of the clips 1103 of the first rotor 110 and the second rotor 111.

  Here, the rotational direction phases of the first rotor 110 and the second rotor 111 in the rotor unit 11 are set such that the permanent magnet 1102 is shifted between the S pole and the N pole. That is, the permanent magnet 1102 of the second rotor 111 corresponding to the X direction is an N pole with respect to the place where the S pole permanent magnet 1102 of the first rotor 110 is disposed.

7). Formation of First Rotor 110 and Second Rotor 111 A method for forming the first rotor 110 and the second rotor 111 will be described with reference to FIG. In FIG. 10, a part of the formation process of the first rotor 110 is extracted and illustrated. The same applies to the method of forming the second rotor 111.

  As shown in FIGS. 10A and 10B, the back yoke 1101 is joined to the outer peripheral surface of the base ring 1100. Grooves 1100a and 1101a into which the clips 1103 are fitted are provided on the side surfaces of the base ring 1100 and the back yoke 1101.

  Next, N-pole permanent magnets 1102 and S-pole permanent magnets 1102 are alternately arranged in the circumferential direction with respect to the outer peripheral surface of the back yoke 1101. Step portions 1102d and 1102e are provided at each end of the permanent magnet 1102. The widths of these stepped portions 1102d and 1102e are set to half of the width of the clip 1103. When the permanent magnet 1102 is hooked to the base ring 1100 and the back yoke 1101, the portion where the clip 1103 is fitted is set. is there.

  As shown in FIGS. 10C and 10D, when the permanent magnet 1102 is assembled to the base ring 1100 and the back yoke 1101, the head surface 1103a of the clip 1103 is substantially flush with the outer peripheral surface of the permanent magnet 1102. It becomes. In addition, the protrusion 1103b of the foot portion of the clip 1103 is in a state of protruding to both sides in the axial direction. As described above, the protrusion 1103b is fitted into the holes formed in the outer edge walls 112b and 112c of the spacer ring 112 and the cover plates 113 and 114. As a result, the permanent magnet 1102 is positioned and fixed.

8). Magnetic flux flow The magnetic flux flow in the motor 1 having the above-described configuration will be described with reference to FIGS. 10 and 11. FIG. 10 is a schematic perspective view showing the core coil set 100, the first rotor 110, and the second rotor 111 extracted from the configuration of the motor 1, and FIGS. 11A and 11B show the flow of magnetic flux. It is a schematic diagram which shows.

  As shown in FIG. 10, in the motor 1, twelve core coil sets 100 are arranged in the circumferential direction in an independent state in units of slots. Three adjacent coils 1003 are supplied with electric power whose phases are shifted from each other.

  The first rotor 110 and the second rotor 111 are arranged in parallel with a gap in the X direction (with a gap corresponding to the width of the spacer ring 112). There are gaps between the permanent magnets of the rotors 110 and 111 and the end faces 1000a and 1000b of the stator core 1000. In the present embodiment, since there is a gap in the radial direction, the motor 1 is a radial gap type motor.

  Next, as shown in FIG. 11 (a), an arbitrary core coil set 100 is a core coil set A100a, a core coil set 100 adjacent to the core coil set 100 is a core coil set B100b, and a core coil set adjacent to the opposite side is set. 100 is a core coil set C100c.

  In addition, the permanent magnet 1102 facing the end surface 1000a of the stator core 1000 in the core coil set A100a is a permanent magnet A1102a, the permanent magnet 1102 facing the end surface 1000a of the stator core 1000 in the core coil set B100b is a permanent magnet B1102b, and the core coil set C100c. The permanent magnet 1102 that faces the end surface 1000a of the stator core 1000 is referred to as a permanent magnet C1102c.

  As shown in FIG. 11A, the magnetic flux MF starting from the stator core 1000 in the core coil set A100a flows through the permanent magnet A1102a facing the end surface 1000a to the back yoke 1101. The magnetic flux MF branches back and forth in the circumferential direction at the back yoke 1101.

  One of the branched magnetic fluxes flows from the permanent magnet B1102b to the stator core 1000 in the core coil set B100b, and the other flows from the permanent magnet C1102c to the stator core 1000 in the core coil set C100c.

  When the flow of the magnetic flux is viewed in the X direction, the magnetic flux MF from the back yoke 1111 of the second rotor 111 passes through the stator core 1000 in the core coil set A from the permanent magnet D1112a as shown in FIG. It flows to the back yoke 1101 through the permanent magnet A1102a of the rotor 110.

  The flow of the magnetic flux MF as described above is sequentially changed based on the direction and phase of the current supplied to the coil 1003, so that the motor 1 is driven to rotate.

9. Effect In the motor 1 according to this embodiment, a laminated body of thin plate materials 10000 made of an amorphous soft magnetic material is used as the stator core 1000. In the stator core 1000 having such a configuration, iron loss (vortex loss) can be significantly reduced as compared with a stator core using a directional electromagnetic steel plate or a silicon steel plate.

  Therefore, in the motor 1, it is possible to increase the torque while avoiding an increase in size relative to the rotating electrical machine according to the related art.

  Further, in the motor 1 according to the present embodiment, the plate thickness of the thin plate material 10000 constituting the stator core 1000 is extremely thin as 0.05 mm or less (for example, 0.025 mm). Thereby, compared with the prior art which uses the silicon steel plate which 0.2mm was the minimum of plate | board thickness, the motor 1 which can aim at reduction of a vortex loss and can aim at high torque, avoiding enlargement. It becomes feasible.

  4A and 4B, in the stator unit 10 according to this embodiment, the outer peripheral ring 101 and the inner peripheral ring 102, the pair of inner diameter side fixing plates 103 and 104, and the pair of outer parts. The radial side fixing plates 105 and 106 constitute an annular tube. This annular tube body is a part that functions as an annular fixing portion that fixes the plurality of stator cores 1000 in an annular shape in the configuration of the stator unit 10. Therefore, in the motor 1 according to the present embodiment, in the stator unit 10, the positional accuracy of each stator core 1000 in the plurality of core coil sets 100 can be maintained high. Therefore, it is advantageous for achieving high torque.

  In addition, the coil 1003 in the core coil set 100 is housed in a tube of the annular fixed portion configured as described above. The outer ring 101 and the inner ring 102, the inner diameter side fixing plates 103 and 104, and the outer diameter side fixing plates 105 and 106 are joined in a liquid-tight state to each other and in a liquid-tight state with respect to the stator core 1000. It touches. For this reason, the cooling liquid is introduced from the cooling liquid supply port 10a provided in the outer peripheral ring 101, and is circulated through the pipes (between the gaps 10c and 10d and the adjacent coils 1003) and then discharged from the cooling liquid discharge port 10b. be able to. Therefore, in the motor 1, an excessive temperature rise of the coil 1003 can be suppressed, deterioration can be suppressed even when driving is performed for a long time, and the life is long.

  In the present embodiment, the positioning and fixing of the core coil set 100 and the cooling of the coil 1003 can be performed by the annular fixing portion configured as described above. Compared to the increase in size of the motor 1, the configuration can be simplified.

  Therefore, the motor 1 can increase the torque and has a long life while suppressing an increase in size and cost.

  In the present embodiment, the side wall plate that closes both sides in the axial direction is divided into two, the inner diameter side fixing plates 103 and 104 and the outer diameter side fixing plates 105 and 106. For this reason, a complicated operation | work is not required at the time of manufacture of the stator unit 10, the ease of manufacture can be ensured, and the rise in manufacturing cost can be suppressed.

  The inner diameter side fixing plates 103 and 104 and the outer diameter side fixing plates 105 and 106 have the end portions of the tooth portions 103b, 104b, 105b, and 106b formed as single body portions 104c and 106c. The single cylinder portion 104c of 104 and the single cylinder portions 106c of the outer diameter side fixing plates 105 and 106 are engaged with each other in a liquid-tight state. As a result, the motor 1 can realize high liquid tightness in the pipe, can cool the coil 1003 with high efficiency, and is advantageous in extending the life.

  In the motor cases 12 and 13 according to the present embodiment, a plurality of concave grooves 13b are formed on the inner surface side. The recessed groove 13b receives a part of the arm portions 1000d and 1000e of the stator core 1000. Therefore, the stator core 1000 is positioned and fixed not only by the inner diameter side fixing plates 103 and 104 and the outer diameter side fixing plates 105 and 106 but also by the motor cases 12 and 13.

  Further, as shown in FIG. 5A, in the stator core 1000 according to the present embodiment, the end faces 1000a and 1000b are formed of curved surfaces along the outer peripheral surface of the rotor with the rotation axis as the center. In this way, the end surfaces 1000a and 1000b of the stator core 1000 are curved so as to follow the rotors 110 and 111, so that the gap between the end surfaces 1000a and 1000b of the stator core 1000 and the permanent magnets 1102 of the rotors 110 and 111 is kept small. be able to.

[Second Embodiment]
1. Configuration of Core Coil Set 200 Of the configuration of the motor according to the second embodiment of the present invention, the configuration of the core coil set 200 will be described with reference to FIGS.

  As shown in FIG. 13A, the core coil set 200 includes a stator core 2000, a support member (not shown), a bobbin 2002, and a coil 2003. The stator core 2000 according to the present embodiment has a J shape or an L shape in which the arm portion 2000d has an arc shape. One end surface 2000a of the stator core 2000 has a center in the Z direction and is subjected to curved surface processing along the outer peripheral surface of the rotor. Thereby, the space | interval of the end surface 2000a of the stator core 2000 and each permanent magnet 1102 of the rotor 110 can be narrowed similarly to the said 1st Embodiment.

  Although not shown, the support member has the same configuration as the support member 1001 according to the first embodiment. As with the bobbin 1002 according to the first embodiment, the bobbin 2002 is also formed so as to cover the four main surfaces of the body portion 2000c of the stator core 2000. Also in the core coil set 200 according to the present embodiment, the bobbin 2002 is made of an electrically insulating material (for example, a resin material having an electrically insulating property), and substantially in the X direction and the end surface of the support member. It is provided in one state.

  In the present embodiment, the bobbin 2002 has a flange that extends in a direction orthogonal to the X direction at both side portions of the coil 2003. Thereby, collapse of the coil 2003 can be prevented.

  The coil 2003 is wound around the bobbin 2002 and employs a coil formed by edgewise winding of a rectangular wire.

  On the other hand, the stator unit according to this embodiment includes a ring-shaped back yoke 2004. The back yoke 2004 is connected to the right end portion (connecting portion) of the stator core 2000 in the X direction. As shown in FIG. 13B, the back yoke 2004 is connected to one end of all the stator cores 2000.

  Like the stator cores 1000 and 2000, the back yoke 2004 is formed by winding a thin plate material made of an amorphous soft magnetic material. The thickness of the thin plate material used is the same as that of the stator cores 1000 and 2000, etc. It is.

  Although the configuration of the core coil set 200 and the number of corresponding rotors are different from those of the first embodiment, other configurations are substantially the same as those of the first embodiment.

2. Magnetic flux flow The magnetic flux flow in the motor according to the present embodiment will be described with reference to FIGS.

  As shown in FIG. 13B, in the motor according to the present embodiment, twelve core coil sets 200 are arranged in the circumferential direction in an independent state in units of slots. Three adjacent coils 2003 are supplied with electric power whose phases are shifted from each other.

  The rotor 110 is disposed in a state where the permanent magnet 1102 faces the end surface 2000a of the stator core 2000 in the core coil set 200 with a gap therebetween.

  Next, also in the present embodiment, an arbitrary core coil set 200 is a core coil set A 200a, an adjacent core coil set 200 is a core coil set B 200b, and two adjacent core coil sets 200 on the opposite side are core coils. Set C200c.

  In addition, the permanent magnet 1102 facing the end surface 2000a of the stator core 2000 in the core coil set A200a is a permanent magnet A1102a, the permanent magnet 1102 facing the end surface 2000a of the stator core 2000 in the core coil set B200b is a permanent magnet B1102b, and the core coil set C200c. The permanent magnet 1102 that faces the end surface 2000a of the stator core 2000 is referred to as a permanent magnet C1102c.

  As shown in FIG. 13B, the magnetic flux MF starting from the stator core 2000 in the core coil set A200a flows through the permanent magnet A1102a facing the end surface 2000a to the back yoke 1101 of the rotor 110. The magnetic flux MF branches back and forth in the circumferential direction at the back yoke 1101.

  One of the branched magnetic fluxes flows from the permanent magnet B1102b to the stator core 2000 in the core coil set B200b, and the other flows from the permanent magnet C1102c to the stator core 2000 in the core coil set C200c. Each magnetic flux MF flows in a loop through the back yoke 2004 connected to one end of each of the stator cores 2000 of the core coil set A 200a, the core coil set B 200b, and the core coil set C 200c.

  When the flow of the magnetic flux is viewed in the X direction, as shown in FIG. 13C, the magnetic flux MF that has passed through the stator core 2000 from the back yoke 2004 flows from the permanent magnet A 1102 a to the back yoke 1101 of the rotor 110.

  The flow of the magnetic flux MF as described above is sequentially changed based on the direction and phase of the current supplied to the coil 2003, whereby the motor is driven to rotate.

3. Effect Although not shown in FIGS. 13A and 13B, in this embodiment as well, a plurality of core coil sets 200 are provided with annular fixing portions (an outer ring 101, an inner ring 102, an inner diameter fixing plate 103, 104 and outer diameter side fixing plates 105 and 106) and motor cases 12 and 13 are positioned and fixed. For this reason, the effect similar to the said 1st Embodiment can be acquired.

  The motor according to the present embodiment is different from the first embodiment in that the shape of the stator core 2000 is J-shaped or L-shaped in a side view. Due to such differences, in the motor according to the present embodiment, high torque can be realized by reducing the vortex loss as described above while further reducing the size.

[Third Embodiment]
Of the configuration of the motor according to the third embodiment of the present invention, the configuration of the core coil set 300 will be described with reference to FIG.

  As shown in FIG. 14A, the core coil set 300 includes a stator core 3000, a support member (not shown), a bobbin 3002, and a coil 3003. The stator core 3000 according to the present embodiment is formed by integrally forming a trunk portion 3000c provided at the center in the X direction and arm portions 3000d and 3000e extending from both sides in a side view.

  Each of the arm portions 3000d and 3000e in the stator core 3000 has a shape bent in a U shape or a C shape. End faces 3000a and 3000b on both sides of stator core 3000 are provided so as to face each other in the X direction.

  Although not shown, the support member has the same configuration as the support member 1001 according to the first embodiment. As with the bobbin 1002 according to the first embodiment, the bobbin 3002 is also formed so as to cover the four main surfaces of the body portion 3000c of the stator core 3000. Also in the core coil set 300 according to the present embodiment, the bobbin 3002 is made of an electrically insulating material (for example, a resin material having an electrically insulating property), and substantially faces the end surface of the support member in the X direction. It is provided in one state. The coil 3003 is wound around the bobbin 3002 and employs a coil constituted by edgewise winding of a rectangular wire.

  Further, the bobbin 3002 according to the present embodiment also has a configuration having a collar portion.

  The stator core 3000 according to the present embodiment is also a laminated body in which a plurality of thin plate materials made of an amorphous soft magnetic material are laminated. The plate thickness of each thin plate material is 0.05 mm or less (for example, 0.025 mm). The laminating direction of the thin plate materials is the Z direction at the body portion (center portion in the X direction). In other words, the interface between the thin plate materials extends in a direction perpendicular to the paper surface.

  Next, in the motor according to the present embodiment, the back yoke 3101 of the first rotor has a ring shape having a central axis extending in the X direction, and the back yoke 3111 of the second rotor also has a central axis extending in the X direction. It is ring-shaped. The permanent magnet 3102 of the first rotor is connected to the X direction left main surface of the back yoke 3101 and faces the end surface 3000 a of the stator core 3000. On the other hand, the permanent magnet 3112 of the second rotor is connected to the right main surface in the X direction of the back yoke 3111 and faces the end surface 3000b of the stator core 3000.

  The motor according to the present embodiment is a so-called axial gap type motor in which the end faces 3000a and 3000b of the stator core 3000 and the permanent magnets 3102 and 3112 face each other in the X direction (axial direction).

  Note that also in the stator core 3000 according to the present embodiment, the interface between the thin plate materials on the end faces 3000a and 3000b extends in a direction perpendicular to the paper surface.

  In the present embodiment, a configuration similar to that of the stator cores 1000 and 2000 according to the first embodiment and the second embodiment is adopted for the axial gap type motor, thereby avoiding an increase in the size of the motor. This is effective for achieving torque. The reason is the same as described above.

  In the motor according to the present embodiment, since the permanent magnets 3102 and 3112 of the first rotor and the second rotor are arranged on a plane orthogonal to the X direction, the end faces 3000a and 3000b of the stator core 3000 are curved surfaces. No processing is necessary. As a result, the manufacturing cost can be reduced.

  Although not shown, in this embodiment as well, a plurality of core coil sets 300 are formed by annular fixing portions (the outer peripheral ring 101 and the inner peripheral ring 102, the inner diameter side fixing plates 103 and 104, and the outer diameter side fixing plates 105 and 106). And the motor cases 12 and 13 are positioned and fixed. For this reason, the effect similar to the said 1st Embodiment can be acquired.

[Fourth Embodiment]
Of the configuration of the motor according to the fourth embodiment of the present invention, the configuration of the core coil set 400 will be described with reference to FIG.

  As shown in FIG. 14B, the core coil set 400 includes a stator core 4000, a support member (not shown), a bobbin 4002, and a coil 4003. The stator core 4000 according to the present embodiment is integrally formed with a body portion 4000c provided at the center in the X direction and an arm portion 4000d extending from one side in a side view.

  The stator unit according to this embodiment also includes a ring-shaped back yoke 4004. As shown in FIG. 14B, the external configuration of the back yoke 4004 is the same as that of the back yoke 2004 of the second embodiment.

  A right end portion (connecting portion) in the X direction of the stator core 4000 is connected to the back yoke 4004. The back yoke 4004 according to this embodiment is also connected to one end of all the stator cores 4000.

  The arm portion 4000d in the stator core 4000 is bent approximately 180 ° and has a U-shape or C-shape. The end surface 4000a of the stator core 4000 is arranged so as to face the right side in the X direction.

  Although not shown in FIG. 14B, the support member has the same configuration as the support member 1001 according to the first embodiment. As with the bobbin 1002 according to the first embodiment, the bobbin 4002 is also formed so as to cover the four main surfaces with respect to the body portion 4000c of the stator core 4000. Also in the core coil set 400 according to the present embodiment, the bobbin 4002 is made of an electrically insulating material (for example, a resin material), and is provided in a state substantially flush with the end surface of the support member in the X direction. ing. The coil 4003 is wound around the bobbin 4002 and employs a coil formed by edgewise winding of a rectangular wire.

  The stator core 4000 according to this embodiment is also a laminated body in which a plurality of thin plate materials made of an amorphous soft magnetic material are laminated. The plate thickness of each thin plate material is 0.05 mm or less (for example, 0.025 mm). The laminating direction of the thin plate materials is the Z direction at the body portion (center portion in the X direction). In other words, the interface between the thin plate materials extends in a direction perpendicular to the paper surface.

  Next, in the motor according to the present embodiment, the back yoke 3101 of the rotor has a ring shape having a central axis in the X direction. The permanent magnet 3102 of the rotor is connected to the main surface on the left side in the X direction of the back yoke 3101 and faces the end surface 4000a of the stator core 4000.

  The motor according to the present embodiment is also a so-called axial gap type motor in which the end face 4000a of the stator core 4000 and the permanent magnet 3102 of the rotor face each other in the X direction (axial direction).

  In the stator core 4000 according to the present embodiment, the interface between the thin plate materials on the end surface 3000a extends in a direction perpendicular to the paper surface.

  In the present embodiment, by adopting the same configuration as the stator cores 1000, 2000, and 3000 according to the first embodiment, the second embodiment, and the third embodiment for the axial gap type motor, This is effective for increasing torque while avoiding an increase in size. The reason is the same as described above.

  Although not shown, in this embodiment as well, the plurality of core coil sets 400 are formed by annular fixing portions (the outer ring 101 and the inner ring 102, the inner diameter side fixing plates 103 and 104, and the outer diameter side fixing plates 105 and 106). And the motor cases 12 and 13 are positioned and fixed. For this reason, the effect similar to the said 1st Embodiment can be acquired.

[Fifth Embodiment]
Of the configuration of the motor according to the fifth embodiment of the present invention, the configuration of the core coil set 500 will be described with reference to FIGS.

  As shown in FIG. 15A, the core coil set 500 includes a stator core 5000, a support member (not shown), a bobbin 5002, and a coil 5003. The stator core 5000 according to the present embodiment is formed to extend linearly in the X direction in a side view. For this reason, one end face 5000a of the stator core 5000 faces the X direction left side, and the other end face 5000b faces the X direction right side.

  Although not shown, the support member has the same configuration as the support member 1001 according to the first embodiment. As with the bobbin 1002 according to the first embodiment, the bobbin 5002 is also formed so as to cover the four main surfaces with respect to the body portion of the stator core 5000. Also in the core coil set 500 according to the present embodiment, the bobbin 5002 is made of an electrically insulating material (for example, a resin material having an electrically insulating property), and substantially faces the end surface of the support member in the X direction. It is provided in one state. The coil 5003 is wound around the bobbin 5002 and employs a coil formed by edgewise winding of a rectangular wire.

  The bobbin 5002 according to the present embodiment also has a configuration having a collar portion, and the coil 5003 can be prevented from being collapsed.

  As shown in FIG. 15B, the stator core 5000 according to this embodiment is also a laminated body in which a plurality of thin plate materials made of an amorphous soft magnetic material are laminated. The plate thickness of each thin plate material is 0.05 mm or less (for example, 0.025 mm). The lamination direction of the thin plate materials is the Z direction. In other words, the interface between the thin plate materials extends in a direction perpendicular to the paper surface.

  Next, in the motor according to the present embodiment, the back yoke 5101 of the first rotor has a ring shape having a central axis extending in the X direction, and the back yoke 5111 of the second rotor is also a central axis extending in the X direction. It is ring shape which has. The permanent magnet 5102 of the first rotor is connected to the right main surface in the X direction of the back yoke 5101 and faces the end surface 5000a of the stator core 5000. On the other hand, the permanent magnet 5112 of the second rotor is connected to the X direction left main surface of the back yoke 5111 and faces the end surface 5000b of the stator core 5000.

  The motor according to the present embodiment is also a so-called axial gap type motor in which the end faces 5000a and 5000b of the stator core 5000 and the permanent magnets 5102 and 5112 face each other in the X direction (axial direction).

  Note that also in the stator core 5000 according to the present embodiment, the interface between the thin plate members on the end faces 5000a and 5000b extends in a direction perpendicular to the paper surface.

  In this embodiment, the same size as the stator cores 1000, 2000, 3000, and 4000 according to the first to fourth embodiments is adopted for the axial gap type motor, thereby increasing the size of the motor. It is effective to increase torque while avoiding it. The reason is the same as described above.

  In the present embodiment, since the stator core 5000 has a linear shape, no extra space is required, the processing of the stator core 5000 can be simplified, and downsizing and cost reduction can be achieved. .

  Although not shown, in this embodiment as well, a plurality of core coil sets 500 are formed by annular fixing portions (the outer ring 101 and the inner ring 102, the inner diameter side fixing plates 103 and 104, and the outer diameter side fixing plates 105 and 106). And the motor cases 12 and 13 are positioned and fixed. For this reason, the effect similar to the said 1st Embodiment can be acquired.

[Sixth Embodiment]
Of the configuration of the motor according to the sixth embodiment of the present invention, the configuration of the core coil set 600 will be described with reference to FIG.

  As shown in FIG. 15C, the core coil set 600 includes a stator core 6000, a support member (not shown), a bobbin 6002, a coil 6003, and a back yoke 6004. Similar to the stator core 5000 according to the fifth embodiment, the stator core 6000 according to the present embodiment is formed to extend linearly in the X direction in a side view. For this reason, one end surface 6000a of the stator core 6000 is in a state facing the left side in the X direction. A ring-shaped back yoke 6004 is connected to the right end portion (connection portion) of the stator core 6000 in the X direction. The back yoke 6004 has the same configuration as the back yoke 2004 according to the second embodiment, the back yoke 4004 according to the fourth embodiment, and the like.

  Although not shown, the support member has the same configuration as the support member 1001 according to the first embodiment. As with the bobbin 1002 according to the first embodiment, the bobbin 6002 is also formed so as to cover the four main surfaces with respect to the body portion of the stator core 6000. Also in the core coil set 600 according to the present embodiment, the bobbin 6002 is made of an electrically insulating material (for example, an electrically insulating resin material), and is substantially flush with the end surface of the support member in the X direction. It is provided in the state of. The coil 6003 is wound around the bobbin 6002 and employs a coil formed by edgewise winding of a rectangular wire.

  The stator core 6000 according to the present embodiment is also a laminated body in which a plurality of thin plate materials made of an amorphous soft magnetic material are laminated, like the stator core 5000 according to the fifth embodiment. The plate thickness of each thin plate material is 0.05 mm or less (for example, 0.025 mm). The lamination direction of the thin plate materials is the Z direction. In other words, the interface between the thin plate materials extends in a direction perpendicular to the paper surface.

  Next, in the motor according to the present embodiment, the back yoke 5101 of the rotor has a ring shape having a central axis in the X direction. The permanent magnet 5102 of the rotor is connected to the right main surface in the X direction of the back yoke 5101 and faces the end surface 6000a of the stator core 6000.

  The motor according to the present embodiment is also a so-called axial gap type motor in which the end surface 6000a of the stator core 6000 and the permanent magnet 5102 face each other in the X direction (axial direction).

  Note that also in the stator core 6000 according to the present embodiment, the interface between the thin plate materials on the end surface 6000a extends in a direction perpendicular to the paper surface.

  In the present embodiment, the same structure as that of the stator cores 1000, 2000, 3000, 4000, and 5000 according to the first to fifth embodiments described above is adopted for the axial gap type motor. This is effective in increasing torque while avoiding the increase in torque. The reason is the same as described above.

  Also in this embodiment, since the stator core 6000 has a linear shape and one end is connected to the back yoke 6004, no extra space is required, and the processing of the stator core 6000 can be simplified. Therefore, the size and cost can be reduced.

  Although not shown, also in this embodiment, the plurality of core coil sets 600 are formed by annular fixing portions (the outer ring 101 and the inner ring 102, the inner diameter side fixing plates 103 and 104, and the outer diameter side fixing plates 105 and 106). And the motor cases 12 and 13 are positioned and fixed. For this reason, the effect similar to the said 1st Embodiment can be acquired.

[Seventh Embodiment]
Of the configuration of the motor according to the seventh embodiment of the present invention, a part of the configuration of the core coil set will be described with reference to FIGS. 16A and 16B, the stator core 1000 and the support members 7001 and 7005 are extracted and illustrated.

  As shown in FIGS. 16A and 16B, support members 7001 and 7005 are attached to the stator core 1000 according to this embodiment on all four main surfaces of the body portion 1000c. The support members 7001 and 7005 are made of a ceramic material or the like, similar to the support member 1001 and the like.

  When adopting the form in which the support members 7001 and 7005 are attached to all four sides as described above, it is applied to the stator core 1000 when the coil is wound as compared with the first to sixth embodiments. The stress can be further relaxed. Therefore, the stress strain on the stator core 1000 during coil winding can be further reduced.

[Eighth Embodiment]
Of the configuration of the motor according to the eighth embodiment of the present invention, the configuration of the stator unit 80 will be described with reference to FIG. In FIG. 17, of the configuration of the stator unit 80, the trunk portion of the stator unit 8000 and its peripheral structure are extracted and illustrated.

  As shown in FIG. 17, in the stator unit 80 according to this embodiment, the core coil set includes a stator core 8000, a support member 8001, a bobbin 8002, and a coil 8003. In the present embodiment, the flange portion 8002a of the bobbin 8002 in each core coil set 800 is formed so as to expand in the YZ plane direction.

  Also in this embodiment, the outer peripheral ring 801 and the inner peripheral ring 802, the inner diameter side fixing plates 803 and 804, and the outer diameter side fixing plates 805 and 806 constitute an annular fixing portion. In the stator unit 80 according to this embodiment, the X direction outer side surface of the flange portion 8002a of the bobbin 8002 is in contact with the inner side surfaces of the inner diameter side fixing plates 803 and 804 and the outer diameter side fixing plates 805 and 806 without any gap. Therefore, in the stator unit 80, the liquid-tight state of the gaps 80c and 80d is more reliably maintained, and the coil 8003 is cooled more favorably.

  Except for the configuration of the bobbin 8002, the other configurations are the same as those in the first to seventh embodiments. Therefore, similarly to the above, the torque can be increased while avoiding an increase in the size of the motor. Can do.

[Modification]
In the first to eighth embodiments, the motor is employed as an example of the rotating electrical machine. However, the present invention is not limited to this. For example, the present invention can be applied to a generator or a generator / motor.

  In the first embodiment, the second embodiment, and the like, an outer stator / inner rotor type motor is used as an example, but an inner stator / outer rotor type motor can also be used. In this case, the same effect as described above can be obtained.

  Moreover, in the said 1st Embodiment etc., although the method which winds the thin plate material 10000 and cuts out a part was employ | adopted as an example of the formation method of the stator core 1000, this invention is not limited to this. For example, the present invention can employ a stator core formed by laminating thin plate materials previously formed in a strip shape in the thickness direction.

  In the first to eighth embodiments, the cross-sectional shape of the stator cores 1000, 2000, 3000, 4000, 5000, 6000, and 8000 is square or rectangular. However, the present invention is limited to this. It is not a thing. For example, a stator core having a trapezoidal shape or a parallelogram shape in cross section can be adopted.

  In the first to eighth embodiments, the stator cores 1000, 2000, 3000, 4000, 5000, 6000, and 8000 are formed by laminating a plurality of thin plate materials made of an amorphous soft magnetic material. The present invention is not limited to this. For example, the stator core may be configured by laminating a plurality of thin plate materials made of a nanocrystallized soft magnetic material that is not in an amorphous state.

  Further, as a material of the supporting members 1001, 7001, 7005, 8001 inserted between the stator cores 1000, 2000, 3000, 4000, 5000, 6000, 8000 and the bobbins 1002, 2002, 3002, 4002, 5002, 6002, 8002 Although ceramics is adopted, the present invention is not limited to this. For example, a resin material or the like can be used.

  Moreover, in the said 1st Embodiment to the said 8th Embodiment, it was set as the structure where the radial direction inner side of the rotors 110 and 111 was a cavity, However, This invention is not limited to this. For example, it is possible to adopt a configuration in which a clutch is built inside the rotor in the radial direction. In a rotating electrical machine incorporating such a clutch, it is possible to selectively connect and release the rotational driving force from the outside and the rotational driving force from the motor by connecting and disconnecting the clutch. Such a configuration can be used, for example, in a hybrid vehicle including an engine and a drive motor.

1 Motor (Rotating electric machine)
10, 80 Stator unit 11 Rotor unit 100, 200, 300, 400, 500, 600 Core coil set 101 Outer ring 102 Inner ring 103, 104, 803, 804 Inner diameter side fixed plate 103a, 104a Ring part 103b, 104b Teeth Part 104c Single cylinder part 105, 106, 805, 806 Outer diameter side fixing plate 105a, 106a Ring part 105b, 106b Tooth part 106c Single cylinder part 110 First rotor 111 Second rotor 1000, 2000, 3000, 4000, 5000, 6000, 8000 Stator core 1000a, 1000b, 2000a, 4000a, 5000a, 5000b, 6000a End face 1000c, 2000c, 3000c, 4000c Body part 1001, 7001, 7005,800 Support member 1002, 20022, 3002, 4002, 5002, 6002, 8002 Bobbin 1003, 2003, 3003, 4003, 5003, 6003, 8003 Coil 1101, 1111, 2004, 3101, 3111, 4004, 5101, 5111, 6004 Back core 1102 , 3102, 3112, 5102, 5112 permanent magnet 8002a buttocks

Claims (2)

A stator having a plurality of stator cores arranged in the circumferential direction at intervals, and a coil wound around each stator core;
A rotor having a rotating shaft and a plurality of permanent magnets arranged to face each other with an interval between end faces of the plurality of stator cores;
An annular tubular body, in which the plurality of coils are housed in a tube, and an annular fixing portion that fixes the plurality of stator cores;
With
Each of the plurality of stator cores is a laminated body in which a plurality of thin plate materials made of an amorphous soft magnetic material are laminated, and when viewed from the side in the circumferential direction, the trunk portion along the axial direction, and the trunk portion An arm extending outward in the axial direction,
The coil is wound around the body portion of the stator core, and is arranged in a state spaced apart from a part of the inner wall surface of the annular fixed portion,
The arm portion of the stator core is extended outward while maintaining a liquid-tight state from a window portion provided in the annular fixing portion ,
The annular fixing portion includes an outer peripheral ring and an inner peripheral ring arranged at intervals in the radial direction, a pair of side wall plates that close both sides in the axial direction and sandwich the coil from both sides,
Each of the pair of side wall plates is provided with the window portion allowing the arm portion to extend,
The side wall plate is configured by a combination of an inner diameter side fixing plate and an outer diameter side fixing plate, which is divided into two in the radial direction,
The inner diameter side fixing plate and the outer diameter side fixing plate are engaged with each other while maintaining a liquid-tight state.
Rotating electric machine characterized by that. The inner diameter side fixing plate is integrally formed with a ring-shaped annular portion and a plurality of tooth portions protruding radially outward from the outer periphery of the annular portion and spaced apart from each other in the circumferential direction. Being
The outer diameter side fixing plate is integrally formed with an annular ring part and a plurality of tooth parts protruding radially inward from the inner periphery of the annular part and spaced apart from each other in the circumferential direction. Formed,
Each end side of the plurality of tooth portions in the inner diameter side fixed plate is in a single cylinder shape in the plate thickness direction,
Each end side of the plurality of tooth portions in the outer diameter side fixed plate has a single cylinder shape in the plate thickness direction,
Each end side of the plurality of tooth portions in the inner diameter side fixing plate is engaged with each end side of the plurality of tooth portions in the outer diameter side fixing plate.
The rotating electrical machine according to claim 1 .

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