JP2007104820A - Rotating electric machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rotating electric machine having a rotor that can surely fix and hold magnets even if used at high-speed rotation and high torque. <P>SOLUTION: In the rotating electric machine having the rotor arranged with a plurality of the magnets on a disc-shaped rotor base via a yoke member; there is formed on the rotor base 11 a recess 16 that accommodates the magnets 13 so as to sandwich them from both sides in the rotor radial direction, comprises magnet locking parts 14a, 15a with which upper ends of the accommodated magnets 13 in the rotor rotational direction contact, and fixes and holds the magnets 13 so as not to move to the rotor radial direction and the rotor rotational axial direction. The rotor base 11 is formed such that an annular part that forms the outside of the recess 16 in the rotor radial direction is formed on the disc-shaped part that forms the recess 16 integrated with the annular part so as not to be displaceable in the rotor radial direction. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a rotating electric machine, and more particularly to an axial gap type rotating electric machine having a rotor formed by fixing and holding a magnet on a rotor base.

  Conventionally, an axial gap type motor having a rotor formed by fixing and holding a magnet on a rotor base is known. As such, for example, “Manufacturing Method of Rotor and Resin Magnet” (see Patent Document 1), “Axial Brushless Motor” (see Patent Document 2), and “Axial Gear Type Motor” (patent Reference 3).

In the “rotor and resin magnet manufacturing method”, the magnet is fixed to the rotor base with an adhesive. In the “axial brushless motor” and the “axial gear type motor”, the rotor base and the outer circumference of the magnet The holding part is integrally formed to hold the outer peripheral part of the magnet.
JP 2004-80898 A JP-A-7-67307 Japanese Utility Model Publication No. 5-29279

However, the magnet holding structure in the conventional “rotor and resin magnet manufacturing method”, “axial type brushless motor” and “axial gear type motor” holds the magnet when used at high speed rotation and high torque. Was insufficient.
An object of the present invention is to provide a rotating electrical machine having a rotor that can securely hold a magnet even when used at high speed rotation and high torque.

  In order to achieve the above object, a rotating electrical machine according to the present invention is a rotating electrical machine having a rotor in which a plurality of magnets are arranged via a yoke member on a disk-shaped rotor base. The magnet is housed so as to be sandwiched from both sides of the rotor in the rotor radial direction, and has a latching portion with which the upper end of the housed magnet in the rotor rotational axis direction comes into contact. It is characterized in that a concave portion is formed.

  According to the present invention, a rotating electrical machine having a rotor in which a plurality of magnets are arranged on a disk-like rotor base via a yoke member is housed in the rotor base so that each magnet is sandwiched from both sides in the rotor radial direction. An engaging portion is provided to which the upper end of the accommodated magnet in the rotor rotation axis direction comes into contact, and a recess is formed in which the magnet is fixedly held so as not to move in the rotor radial direction and the rotor rotation axis direction. For this reason, the rotor of the rotating electrical machine can securely hold the magnet even when used at high speed rotation and high torque.

The best mode for carrying out the present invention will be described below with reference to the drawings.
(First embodiment)
1A and 1B show a rotor according to a first embodiment of the present invention, in which FIG. 1A is a partial cross-sectional view along the rotor circumferential direction, and FIG. 1B is a partial cross-sectional view along the rotor radial direction. As shown in FIG. 1, a rotor 10 of a rotating electrical machine has a disk-shaped magnet holding member (rotor base) 11 and a plurality of magnets 13 mounted on the rotor base 11 via yoke members 12. The magnets 13 are arranged at substantially equal intervals in the circumferential (θ) direction of the rotor base 11 (see (a)). The rotating electric machine having the rotor 10 has an axial gap structure in which a rotor and a stator (not shown) are arranged to face each other in the axial (axial) direction.

  The rotor base 11 is provided with a step portion 14 on the rotor rotation axis O side that is the inner side of each magnet 13 and a wall portion 15 on the outer peripheral side of the rotor base 11 that is the outer side of the magnet 13. Between the step part 14 and the wall part 15, it has the recessed part 16 which accommodates the magnet 13 in an embedded state (refer (b)). At the upper end of the step portion 14, a magnet locking portion 14 a whose lower surface side is inclined downward toward the rotor rotation axis O side, and at the upper end of the wall portion 15, a magnet whose lower surface side is inclined downward toward the outer peripheral edge side of the rotor base 11. A locking portion 15a is formed.

  Therefore, the magnet 13 housed in the recess 16 is sandwiched from both sides of the rotor radial direction, and the upper ends of both sides of the rotor radial direction are opposed to both sides of the rotor radial (r) direction, and the magnet locking portion 14a and the magnet locking portion 15a. Is brought into a state in which the upward movement in the rotor rotation axis O direction is prevented. As a result, the magnet 13 in the recess 16 is fixedly held so as not to move in the rotor radial direction and the rotor rotation axis direction (see (b)). The magnet 13 has a corner portion of the upper peripheral edge cut obliquely corresponding to the magnet locking portion 14a and the magnet locking portion 15a.

  The rotor base 11 may be an integral structure in which the step portion 14 and the wall portion 15 are integrally formed. Further, the wall portion 15 is formed by another annular member, and the step portion 14 including a portion obtained by removing the wall portion 15 from the recess 16 is formed by another disk-shaped member, and the annular another member is welded or formed. It may be fixed to a disc-shaped separate member so that it cannot be displaced in the rotor radial direction by brazing or bolt fastening. That is, the rotor base 11 is formed by fixing an annular portion that forms the outer side of the concave portion 16 in the rotor radial direction to a disc-shaped portion that is integrated with the annular portion and forms the concave portion 16 so as not to be displaced in the rotor radial direction. May be. In addition, the wall 15 may be held indirectly by interposing another member between the magnets 13 in addition to directly holding the magnets 13.

  As described above, the rotor base 11 is formed so that the step portion 14 and the wall portion 15 are integrally formed, and the wall portion 15 is formed of an annular separate member so as to suppress displacement in the rotor radial direction. Furthermore, the wall portion 15 has a shape that is undercut in the rotor rotation axis direction, and has a shape that holds the magnet 13 immovably in the rotor rotation axis direction directly or via another member. For this reason, it is possible to prevent the inner diameter side of the magnet from being displaced in the direction of the rotor rotation axis during high-speed rotation of the rotor, so that the magnet holding strength during high-speed rotation can be increased. Further, when using at high torque, the attractive force in the rotor rotational axis direction acting on the magnet 13 is also increased. However, since the magnet can be structurally held instead of the conventional adhesive, the rotor rotational axis direction The holding strength can be increased.

  As described above, in the rotating electrical machine having the rotor 10 in which the plurality of magnets 13 are arranged on the disk-shaped rotor base 11 via the yoke member 12, the magnets 13 are sandwiched in the rotor base 11 from both sides in the rotor radial direction. The magnet 13 has a magnet locking portion 14a and a magnet locking portion 15a that come into contact with the upper end of the stored magnet 13 in the rotor rotation axis direction so that the magnet 13 cannot move in the rotor radial direction and the rotor rotation axis direction. A recessed portion 16 is formed to be fixedly held. In other words, the rotor 10 has the stepped portion 14 that houses the magnet 13 and the wall portion 15, so that the magnet 13 attached to the rotor 10 is securely fixed and held even when the rotating electrical machine is used at high speed and high torque. be able to.

(Second Embodiment)
2A and 2B show a rotor according to a second embodiment of the present invention, in which FIG. 2A is a partial cross-sectional view along the rotor circumferential direction, and FIG. 2B is a partial cross-sectional view along the rotor radial direction. As shown in FIG. 2, the rotor 20 includes a rotor base 21 that also serves as a yoke member, instead of the rotor base 11 and the yoke member 12. Other configurations and operations are the same as those of the rotor 10.

  Therefore, the rotor 20 is configured so that the magnet 13 accommodated between the stepped portion 14 and the wall portion 15 is sandwiched from both sides in the rotor radial direction by the magnet locking portion 14a and the magnet locking portion 15a. And it can be fixedly held so as not to move in the rotor rotation axis direction (see (b)). As a result, the rotor 20 can securely hold the magnet 13 attached to the rotor 20 even when the rotating electrical machine is used at high speed rotation and high torque.

(Third embodiment)
FIG. 3 is a partial cross-sectional view along the rotor radial direction showing a rotor according to a third embodiment of the present invention. As shown in FIG. 3, the rotor 25 has a slit 26a in the stepped portion 14 of the rotor base 21 that can form a thin portion 26 that becomes a magnet locking portion 14a (see FIG. 1B) by plastic deformation. Each of the walls 15 is provided with a slit 27a capable of forming a thin portion 27 which becomes a magnet locking portion 15a (see FIG. 1B) by plastic deformation. Other configurations and operations are the same as those of the rotor 20.

  Therefore, after the magnet 13 is disposed on the rotor base 21, the thin portion 26 is plastically deformed (see the arrow) to form the magnet locking portion 14a, and the thin portion 27 is plastically deformed (see the arrow) to form the magnet locking portion. By forming 15a, the magnet 13 accommodated between the step portion 14 and the wall portion 15 is fixed and held so as not to move in the rotor radial direction and the rotor rotational axis direction while being sandwiched from both sides of the rotor radial direction. be able to.

  As a result, the rotor 25 can securely hold the magnet 13 attached to the rotor 25 even when the rotating electrical machine is used at high speed rotation and high torque. In addition, since the magnet 13 can be fixedly held in the rotor rotation axis direction by forming a portion of the rotor base 21 after the magnet 13 is disposed, the assembly workability of the magnet 13 can be hindered. In addition, the number of parts does not increase. In addition, by forming the thin portions 26 and 27 into a plurality of intermittent portions instead of one continuous in the circumferential direction of the rotor, plastic working becomes easy.

(Fourth embodiment)
4A and 4B show a rotor according to a fourth embodiment of the present invention, in which FIG. 4A is a partial cross-sectional view along the rotor circumferential direction, and FIG. 4B is a partial cross-sectional view along the rotor radial direction. As shown in FIG. 4, the rotor 30 has two rotor bases 31 and 32 having different diameters that are bent at the peripheral edge to form a flange-like portion instead of the rotor base 21 ((b)). reference). Other configurations and operations are the same as those of the rotor 20.

  The two rotor bases 31 and 32 are integrally formed on the large-diameter rotor base 31 with the small-diameter rotor base 32 overlapped with the center thereof, and the flange-like portion 33 of the rotor base 31 and the rotor base are formed. Between the 32 flange-like portions 34, a space (concave portion 16) for sandwiching the magnet 35 is provided. The magnet 35 is the same as the magnet 13 except that the amount of cut off at the upper peripheral edge is small. The flange-like portion 33 and the flange-like portion 34 are formed with a magnet locking portion 33a and a magnet locking portion 34a corresponding to the upper peripheral shape of the magnet 35, respectively.

  Therefore, the rotor 30 is in a state in which the magnet 35 accommodated between the flange-shaped portion 33 and the flange-shaped portion 34 is sandwiched from both sides in the rotor radial direction by the magnet-locking portion 33a and the magnet-locking portion 34a arranged to face each other. Thus, it can be fixedly held so as not to move in the rotor radial direction and the rotor rotation axis direction (see (b)). As a result, the rotor 30 can securely hold the magnet 35 attached to the rotor 30 even when the rotating electrical machine is used at high speed and high torque. In addition, for example, the shape of the locking portion of the magnet 35 can be formed by combining two disk-shaped members with flanges obtained by a method such as pressing, so that the structure of the rotor 30 is simplified and the manufacturing cost is reduced. Reduction is also possible.

(Fifth embodiment)
FIG. 5 is a partial cross-sectional view along the rotor radial direction showing a rotor according to a fifth embodiment of the present invention. As shown in FIG. 5, the rotor 40 has an annular member 41 made of a light and high-strength member fitted in a fitted state on the outer peripheral surface of the rotor, that is, the outer peripheral surface of the flange-shaped portion 33 of the rotor base 31. . Other configurations and operations are the same as those of the rotor 30.

  As a lightweight and high-strength member, for example, there is a member having high specific rigidity and high specific strength, such as carbon fiber reinforced plastic (CFRP). As a result, the rotor 40 can securely hold the magnet 35 attached to the rotor 40 even when the rotary electric machine is used at high speed rotation and high torque, and in addition, by attaching the annular member 41, The rotational speed of the rotor 40 can be increased.

(Sixth embodiment)
FIG. 6 is a partial cross-sectional view along the rotor circumferential direction showing a rotor according to a sixth embodiment of the present invention. As shown in FIG. 6, the rotor 45 uses a rotor base 46 in which angled beads 46 a are formed between the circumferential directions of the magnet 35 in place of the rotor base 31. Other configurations and operations are the same as those of the rotor 30.

  As a result, the rotor 45 can reliably fix and hold the mounted magnet 35 even when the rotating electrical machine is used at high speed rotation and high torque. In addition, by using the rotor base 46, the positioning of the magnet 35 in the rotor circumferential direction can be facilitated and the rigidity of the rotor base surface in the rotor rotor rotation axis direction can be increased. The bead 46a can be easily provided when the rotor base 46 is formed by press working.

(Seventh embodiment)
FIG. 7 is a partial cross-sectional view along the rotor radial direction showing a rotor according to a seventh embodiment of the present invention. As shown in FIG. 7, the rotor 50 does not form the magnet locking portion 33 a and the magnet locking portion 34 a, and a magnet holding member 51 is provided on the air gap surface side of the magnet 35. Other configurations and operations are the same as those of the rotor 30.

The magnet holding member 51 is formed of a thin plate-like member, covers the air gap surface side of the magnet 35, spans the flange-like portion 33 and the flange-like portion 34, and air between the flange-like portion 33 and the flange-like portion 34. It is integrally fixed to the end surface on the gap side using, for example, welding or an adhesive.
Therefore, the magnet 35 accommodated between the flange-shaped portion 33 and the flange-shaped portion 34 is sandwiched from both sides in the rotor radial direction by the magnet holding member 51 fixed to a portion other than the air gap facing surface of the magnet 35. The rotor can be fixedly held so as not to move in the rotation axis direction.

  As a result, the rotor 50 can securely hold the magnet 35 attached to the rotor 50 even when the rotating electrical machine is used at high speed rotation and high torque. In addition, the holding strength of the magnet 35 in the rotor rotation axis direction can be increased, and the outer peripheral side holding portion (flange-like portion 33) of the magnet 35 is also fixed from the air gap side that is the magnet exposed side, so that the rotor base The strength of 31 itself can be increased, and the attachment site of the magnet holding member 51 does not affect the magnetic path.

  FIG. 8 is a partial cross-sectional view along the rotor circumferential direction showing another example of the rotor according to the seventh embodiment of the present invention. As shown in FIG. 8, the magnet holding member 51 is made continuous in the circumferential direction of the rotor to form an annular magnet holding member 52 that repeats unevenness and adheres to the side of the magnet 35 of the rotor base 31 to cover all the magnets 35. May be. And the recessed part 52a between the adjacent magnets 35 of the magnet holding member 52 is set to the rotor base 31, and the air gap side end surface parts (see FIG. 7) of both flange-like parts 33 and 34 are both to the flange-like parts 33 and 34, respectively. Fix by fixing means such as welding, screwing, bolt fastening or caulking.

  As described above, the magnet holding member 52 is formed as an annular molded product having projections and depressions in the rotor rotation axis direction, and the recesses 52 a between the magnets 35 and on both sides in the rotor radial direction of the magnet 35 are fixed to the rotor base 31. Therefore, even when the fixing means protrudes like bolt fastening, it is accommodated in the recess 52a, so that the holding strength in the rotor rotation axis direction can be obtained without affecting the air gap, and the uneven shape Therefore, it can also serve as a restriction shape of the position of the magnet 35 in the circumferential direction of the rotor, and the holding strength can be increased even with respect to torque, that is, the circumferential force of the rotor.

(Eighth embodiment)
FIG. 9 is a partial cross-sectional view along the rotor radial direction showing the rotor according to the eighth embodiment of the present invention. As shown in FIG. 9, the rotor 55 is inclined so that both the flange-shaped portion 33 of the rotor base 31 and the flange-shaped portion 34 of the rotor base 32 fall down toward the magnet 35, so that the magnet 35 is positioned on both sides in the rotor radial direction. It is pinched from. The inclination of both flange-like portions 33 and 34 toward the magnet 35 is formed by plastic working means such as pressing, spinning, and caulking.
Therefore, by inclining both flange-like portions 33 and 34 toward the magnet 35, the magnet 35 accommodated between both flange-like portions 33 and 34 is sandwiched from both sides in the rotor radial direction, and in the rotor rotational axis direction. Can be fixedly held immovable to.

  In this way, after the magnet 35 is disposed between the flange-like portions 33 and 34, the magnet 35 is held in shape from both sides in the rotor radial direction by inclining the flange-like portions 33 and 34 toward the magnet 35 side. As a result, the holding strength of the magnet 35 is increased and the assembly workability is improved. As a result, the rotor 55 can securely hold the magnet 13 attached to the rotor 55 even when the rotating electrical machine is used at high speed rotation and high torque.

(Ninth embodiment)
10A and 10B show a rotor according to a ninth embodiment of the present invention, in which FIG. 10A is a partial cross-sectional view along the rotor circumferential direction, and FIG. 10B is a partial cross-sectional view along the rotor circumferential direction after resin sealing. . As shown in FIG. 10, in the rotor 60, the yoke member 61 disposed on the rotor base 11 is formed of a high resistance magnetic material such as a soft magnetic dust material or a metal glass molding material, and is continuous in the circumferential direction of the rotor. Without discontinuity a between the adjacent magnets 13 (see (a)). Other configurations and operations are the same as those of the rotor 10.

As described above, the yoke member 61 is generally formed of a brittle high-resistance magnetic material. However, the discontinuous portion a is provided instead of the continuous annular shape, so that the hoop stress during the rotation of the rotor is reduced. It can be avoided. Therefore, in addition to the effect obtained by the rotor 10, the rotation limit of the rotor 60 can be increased.
The rotor 60 is resin-sealed by assembling the resin R into the recessed space b between the adjacent magnets 13 in the rotor circumferential direction after assembling the yoke member 61 and the magnet 13 (including provisional assembly). (See (b)).

  Thus, since the gap of the rotor 60 is sealed with the filling resin, the positioning and fixing state of each component part is reliably continued, and the strictness of the dimensional accuracy management of each component part can be eased. It becomes possible. Therefore, the number of assembling steps and costs can be reduced, and the resin layer of the insulating material is interposed between the component parts, so that the loop current is suppressed and the rotor loss is reduced.

  FIG. 11 shows a rotor according to another example of the ninth embodiment of the present invention, in which (a) is a partial sectional view along the rotor circumferential direction, and (b) is a portion along the rotor circumferential direction after resin sealing. It is sectional drawing. As shown in FIG. 11, the rotor 65 is formed by a laminated steel plate (laminated silicon steel plate) in which yoke members 66 arranged on the rotor base 11 are laminated concentrically or spirally in the rotor radial direction ( a)). Other configurations and operations are the same as those of the rotor 10.

As described above, the yoke member 66 is formed of the laminated steel plate, so that the rotation limit of the rotor 65 can be increased as compared with the case where the dust material which is a brittle material is used.
The rotor 65 is resin-sealed by assembling the resin R into the recessed space b between the adjacent magnets 13 in the rotor circumferential direction after assembling the yoke member 66 and the magnet 13 (including provisional assembly). (See (b)). Thereby, the same effect as the resin sealing in the rotor 60 can be obtained.

(Tenth embodiment)
12A and 12B show a rotor according to a tenth embodiment of the present invention, in which FIG. 12A is a partial cross-sectional view along the rotor circumferential direction, and FIG. 12B is a partial cross-sectional view along the rotor circumferential direction after resin sealing. . As shown in FIG. 12, the rotor 70 is a laminated steel plate (laminated silicon steel plate) in which a yoke member disposed on the rotor base 11 is laminated in the rotor rotation axis direction at a location c where the magnetic flux is linked in the rotor circumferential direction. The yoke member 71 is formed of an isotropic high-resistance magnetic material such as a soft magnetic dust material or a sintered metal glass material at a location d where the magnetic flux changes from the rotor rotation axis direction to the rotor circumferential direction. 72. Other configurations and operations are the same as those of the rotor 10.

Thus, the yoke member is formed of an isotropic high-resistance magnetic material at a location d where the magnetic flux changes from the rotor rotation axis direction to the rotor circumferential direction, and is formed of a rotor rotation axis direction laminated steel sheet at other locations c. As a result, it is possible to increase the rigidity of the rotor 70 in the rotor rotation axis direction while suppressing the occurrence of eddy current loss.
Further, the rotor 70 is resin-sealed by assembling the yoke members 71 and 72 and the magnet 13 (including provisional assembly) and then filling the resin R into the concave space b between the adjacent magnets 13 in the rotor circumferential direction. (See (b)). Thereby, the same effect as the resin sealing in the rotor 60 can be obtained.

(Eleventh embodiment)
13A and 13B show a rotor according to an eleventh embodiment of the present invention, in which FIG. 13A is a partial cross-sectional view along the rotor circumferential direction, and FIG. 13B is a partial cross-sectional view along the rotor radial direction. FIG. 14 shows the rotor of FIG. 13, where (a) is an exploded configuration diagram and (b) is a perspective view.
As shown in FIG. 13, the rotor 75 includes a magnet locking portion 14 a and a magnet locking portion 15 a (see FIG. 1B) that are magnet holding means for fixing and holding the magnet 13 to the rotor base 76. It does not have, and it forms by filling resin R into the space | gap formed after assembling each structural member. Other configurations and operations are the same as those of the rotor 10 (see FIG. 1).

  As shown in FIG. 14, the rotor 75 includes a disc-shaped rotor base 76, a plurality of yoke members 77 arranged at substantially equal intervals in the disk surface circumferential (θ) direction of the rotor base 76, and each yoke member 77. A rod-shaped portion 78 a disposed in the adjacent gap includes a yoke member 78 projecting radially on the outer periphery of the ring and a plurality of magnets 79 mounted on each yoke member 77. A through hole 80 penetrating the front and back surfaces is formed in the rod-shaped portion 78 a of the yoke member 78.

  After assembling these constituent members (including provisional assembly), gaps formed between the constituent members, that is, the concave spaces b between the adjacent magnets 79 in the circumferential direction of the rotor and the concave spaces e on both sides in the rotor radial direction of the magnet 79. Etc. are filled with resin R and sealed with resin. The filled resin R reaches the rotor base 76 from the through hole 80 of the rod-shaped portion 78 a and is welded to the rotor base 76. Therefore, by filling the resin R, the rotor base 76, the yoke member 77, the yoke member 78, and each magnet 79 are integrally molded with resin.

  Thus, since the gap of the rotor 75 is sealed with the filling resin R, the positioning and fixing state of each component part is reliably continued, and the strictness of the dimensional accuracy management of each component part is alleviated. Is possible. Therefore, the number of assembling steps and costs can be reduced, and the resin layer of the insulating material is interposed between the component parts, so that the loop current is suppressed and the rotor loss is reduced.

  Further, since the filling resin R is continuously integrated from the air gap side to the rotor base 76 side through the through hole 80 of the yoke member 78, the magnet holding strength is improved. In addition, since the resin R and the rotor base 76 are welded by applying the nanomold method to the resin molding, the magnet 79 can be held more firmly.

  The rotor base 76 includes a magnet locking portion 14a and a magnet locking portion 15a (see FIG. 1B), which are magnet holding means for fixing and holding the magnet 13, and each component is assembled. A gap may be formed later, and both fixing and holding by the magnet locking portion 14a and the magnet locking portion 15a and resin molding by filling the gap with resin R may be used.

  Thus, according to the present invention, in a rotating electrical machine having a rotor in which a plurality of magnets are arranged on a disk-shaped rotor base via a yoke member, each magnet is sandwiched from both sides of the rotor in the radial direction of the rotor. Is provided, and a latching portion is provided in which the upper end of the stored magnet contacts with the upper end in the rotor rotation axis direction, and a recess is formed in which the magnet is fixedly held immovably in the rotor radial direction and the rotor rotation axis direction. The rotor of the rotating electrical machine can securely hold the magnet even when used at high speed and high torque.

The rotor which concerns on 1st Embodiment of this invention is shown, (a) is a fragmentary sectional view in alignment with a rotor circumferential direction, (b) is a fragmentary sectional view in alignment with a rotor radial direction. The rotor which concerns on 2nd Embodiment of this invention is shown, (a) is a fragmentary sectional view in alignment with a rotor circumferential direction, (b) is a fragmentary sectional view in alignment with a rotor radial direction. It is a fragmentary sectional view which follows the rotor radial direction which shows the rotor which concerns on 3rd Embodiment of this invention. The rotor which concerns on 4th Embodiment of this invention is shown, (a) is a fragmentary sectional view in alignment with a rotor circumferential direction, (b) is a fragmentary sectional view in alignment with a rotor radial direction. It is a fragmentary sectional view which follows the rotor radial direction which shows the rotor which concerns on 5th Embodiment of this invention. It is a fragmentary sectional view in alignment with the rotor circumferential direction which shows the rotor which concerns on 6th Embodiment of this invention. It is a fragmentary sectional view which follows the rotor radial direction which shows the rotor which concerns on 7th Embodiment of this invention. It is a fragmentary sectional view which follows the rotor circumferential direction which shows the other example of the rotor which concerns on 7th Embodiment of this invention. It is a fragmentary sectional view which follows the rotor radial direction which shows the rotor which concerns on 8th Embodiment of this invention. The rotor which concerns on 9th Embodiment of this invention is shown, (a) is a fragmentary sectional view along a rotor circumferential direction, (b) is a fragmentary sectional view along the rotor circumferential direction after resin sealing. The rotor which concerns on the other example of 9th Embodiment of this invention is shown, (a) is a fragmentary sectional view along a rotor circumferential direction, (b) is a fragmentary sectional view along the rotor circumferential direction after resin sealing. . The rotor which concerns on 10th Embodiment of this invention is shown, (a) is a fragmentary sectional view along a rotor circumferential direction, (b) is a fragmentary sectional view along the rotor circumferential direction after resin sealing. The rotor which concerns on 11th Embodiment of this invention is shown, (a) is a fragmentary sectional view in alignment with a rotor circumferential direction, (b) is a fragmentary sectional view in alignment with a rotor radial direction. The rotor of FIG. 13 is shown, (a) is an exploded block diagram, (b) is a perspective view.

Explanation of symbols

10, 20, 25, 30, 40, 45, 50, 55, 60, 65, 70, 75 Rotor 11, 21, 31, 32, 46, 76 Rotor base 12, 61, 66, 71, 72, 77, 78 Yoke member 13, 35 Magnet 14 Step portion 14a, 15a Magnet locking portion 15 Wall portion 16, 52a Recess 26, 27 Thin portion 26a, 27a Slit 33, 34 Flange-shaped portion 33a, 34a Magnet locking portion 41 Annular member 46a Bead 51, 52 Magnet holding member 78a Rod-shaped portion 80 Through hole O Rotor rotating shaft R Resin a Discontinuous portion b, e Recessed space c, d Location

Claims (12)

In a rotating electrical machine having a rotor on which a plurality of magnets are arranged via a yoke member on a disk-shaped rotor base,
The rotor base is housed such that the magnets are sandwiched from both sides of the rotor in the radial direction of the rotor, and a latching portion with which the upper end of the housed magnet in the rotor rotational axis direction comes into contact is provided. A rotating electrical machine characterized in that a recess is formed that is fixedly held so as not to move in the axial direction. The rotor base;
The annular portion forming the rotor radial outer side of the concave portion is formed by being fixed to the disc-shaped portion forming the concave portion integrally with the annular portion so as not to be displaceable in the rotor radial direction. Item 2. The rotating electrical machine according to Item 1. The locking portion,
3. The rotating electrical machine according to claim 1, wherein the rotating electric machine is formed by a thin portion provided on the rotor base, which can be plastically deformed after the magnet is arranged. The rotor base;
The two rotor bases having different diameters, each having a flange-like portion bent by a peripheral portion, are integrally formed so as to have the concave portion between the two flange-like portions. The rotating electrical machine described. The locking portion,
5. A thin plate-like member that covers the air gap surface side of the magnet, spans the flange-like portions, and is fixed to the air gap-side end surfaces of the flange-like portions. The rotating electrical machine described. The thin plate member
6. The rotating electrical machine according to claim 5, wherein the rotating electric machine is formed in an annular shape that is continuous with the circumferential direction of the rotor and is formed on the side surface of the magnet of the rotor base so as to repeat unevenness covering the magnet. The locking portion,
5. The rotating electrical machine according to claim 4, wherein each of the rotating electric machines is formed by the both flange-shaped portions that are inclined so as to fall down toward the magnet side and are sandwiched from both sides in the rotor radial direction. The yoke member;
8. A high-resistance magnetic material such as a soft magnetic dust material or a metal glass molding material, and is disposed with discontinuities between adjacent magnets without being continuous in the rotor circumferential direction. The rotating electrical machine according to any one of the above. The yoke member;
The rotating electrical machine according to any one of claims 1 to 7, wherein the rotating electrical machine is formed of laminated steel plates laminated concentrically or spirally in a rotor radial direction. The yoke member;
At locations where the magnetic flux is linked in the rotor circumferential direction, it is formed by laminated steel plates laminated in the rotor rotational axis direction. At locations where the magnetic flux changes from the rotor rotational axis direction to the rotor circumferential direction, soft magnetic dust material or metal glass firing is used. The rotating electrical machine according to any one of claims 1 to 7, wherein the rotating electrical machine is formed of an isotropic high-resistance magnetic material of a binder material.   The rotating electric machine according to any one of claims 1 to 10, wherein the rotor base also serves as the yoke member.   The gap formed between the constituent members after assembling the constituent members constituting the rotor is filled with resin and sealed with resin. Rotating electric machine.

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