JP2009011118A - Rotor laminated iron core for reluctance motor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rotor laminated iron core for a reluctance motor that is strong enough in mechanical strength so as to be applicable to high speed rotation and is excellent in motor characteristics with less magnetic flux leakage, in the rotor laminated iron core for the reluctance motor, which rotates by reluctance torque caused by a difference in inductance between the direction of salient poles where magnetic flux is apt to flow along the extending direction of circular slits and the direction of non-salient poles where magnetic flux is hard to flow along the direction of the circular slits arranged in parallel. <P>SOLUTION: After forming ribs 11b which separate the circular slits 11s in iron core pieces 11 and forming caulking portions 11c in the ribs, the rotor laminated iron core 10 for a reluctance motor is structured by stacking and caulking such iron core pieces 11. By forming the ribs which separate the circular slits in the iron core pieces and forming connecting holes in the ribs and by inserting or injecting connecting bodies made of a non-magnetic material into the connecting holes, the rotor laminated stacked iron core 10 for a reluctance motor is structured. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

    The present invention relates to a rotor laminated iron core for a reluctance motor, and more specifically, a plurality of arc-shaped slits convex on the rotation shaft hole side are formed concentrically, and a plurality of arc-shaped slits are formed around the rotation shaft hole. The present invention relates to a detailed structure of a rotor laminated iron core for a reluctance motor, which is formed by laminating iron core pieces formed at intervals.

    For example, as drive motors installed in various machine tools, automobiles, etc., replacement of conventional brushed motors with brushless motors is progressing due to demands for improved durability and higher output. As an aspect, in a stator laminated iron core that generates a traveling wave magnetic field by multiphase AC, a rotor laminated iron core having a salient pole type magnetic path rotates in synchronization with the traveling wave magnetic field, that is, a reluctance motor (particularly, Synchronous reluctance motors) have been provided (see, for example, Patent Document 1).

  As shown in FIGS. 13 and 14, a rotor laminated core (reluctance motor rotor laminated core) A in a reluctance motor is formed by laminating a predetermined number of core pieces (rotor core pieces) P, P... P, P... Are integrated, and a rotation shaft hole O is opened at the center, and a number of arc-shaped slits S, S... Are formed around the rotation shaft hole O. Has been.

  Here, in the rotor laminated iron core A, a magnetic path in the magnetic salient pole direction and a magnetic path in the non-salient pole direction are formed, so that each iron core piece P, P. A plurality of arc-shaped slits S, S... That are convex are formed concentrically, and the group of arc-shaped slits S, S... Formed concentrically is spaced around the rotation shaft hole O. A plurality of sets are formed.

  Thereby, along the extending direction of the arc-shaped slits S, S..., A magnetic path in the salient pole direction (dd axis) where the magnetic flux easily flows is formed, and the arc-shaped slits S, S. A magnetic path in the non-salient pole direction (qq axis) in which magnetic flux hardly flows is formed along the direction, and the rotor laminated core A is based on the difference in inductance between the salient pole direction and the non-salient pole direction. It will rotate by the reluctance torque which arises.

Further, in the rotor laminated core A, the auxiliary bridges b are formed in the arc-shaped slits S, S... Formed concentrically so that they can withstand high-speed rotation against the centrifugal force accompanying rotation. There is something configured as follows.
JP 2001-258222 A

    By the way, according to the rotor lamination | stacking iron core A of the structure mentioned above, the said rotor lamination | stacking iron core A has the intensity | strength adapted to high-speed rotation by forming auxiliary bridge | bridging b, b ... in arc-shaped slit S, S ..., respectively. Although the auxiliary bridges b, b... Are formed along the non-salient pole direction (qq axis), the magnetic flux leaks by flowing through the auxiliary bridges b, b. There was an inconvenience that caused a significant decrease in characteristics.

  SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a rotor laminated core for a reluctance motor that is excellent in motor characteristics by suppressing leakage of magnetic flux and has high mechanical strength and can be sufficiently applied to high-speed rotation. It is what.

    In order to achieve the above object, a rotor laminated iron core for a reluctance motor according to the invention of claim 1 is formed concentrically with a plurality of arc-shaped slits convex on the rotating shaft hole side, and a plurality of arc-shaped slits are formed. Stacked iron core pieces formed at intervals around the rotation shaft hole, and a magnetic flux along the salient pole direction in which the magnetic flux easily flows along the extending direction of the arc-shaped slit and the parallel direction of the arc-shaped slit. In a rotor laminated core for a reluctance motor that rotates due to a reluctance torque generated based on the difference in inductance from the non-salient direction in which it is difficult to flow, a rib that divides an arc-shaped slit is formed in the core piece and a caulking portion is formed on the rib. It is characterized by being formed and caulking and laminating iron core pieces.

  A rotor laminated core for a reluctance motor according to a second aspect of the invention is a rotor laminated iron core for a reluctance motor according to the first aspect of the invention, wherein a plurality of circles formed concentrically with ribs that divide arc-shaped slits. Among the arc-shaped slits, the arc-shaped slits that approach the rotation shaft hole are divided and formed.

  A rotor laminated core for a reluctance motor according to a third aspect of the invention is a rotor laminated iron core for a reluctance motor according to the second aspect of the invention, wherein a plurality of circles are formed concentrically with ribs that divide arc-shaped slits. Among the arc-shaped slits, a plurality of arc-shaped slits close to the rotation shaft hole are divided and formed.

  A rotor laminated iron core for a reluctance motor according to the invention of claim 4 is formed concentrically with a plurality of arc-shaped slits convex on the rotating shaft hole side, and the plurality of arc-shaped slits are formed around the rotating shaft hole. Are formed by laminating iron core pieces formed at intervals, and the magnetic flux hardly flows along the salient pole direction in which the magnetic flux easily flows along the extending direction of the arc-shaped slit and the parallel direction of the arc-shaped slit. In the rotor laminated core for a reluctance motor that rotates due to the reluctance torque generated based on the difference in inductance with the non-salient pole direction, a rib for dividing the arc-shaped slit is formed in the core piece and a connection hole is formed in the rib. It is characterized in that the laminated core pieces are integrated by inserting or injecting a coupling body made of a non-magnetic material into the coupling hole.

  A rotor laminated core for a reluctance motor according to a fifth aspect of the invention is a rotor laminated iron core for a reluctance motor according to the fourth aspect of the invention, wherein a plurality of circles are formed concentrically with ribs that divide the arc-shaped slit. Among the arc-shaped slits, the arc-shaped slits that approach the rotation shaft hole are divided and formed.

  The rotor laminated core for a reluctance motor according to the invention of claim 6 is the reciprocating motor rotor laminated core for the invention of claim 5, wherein the ribs for dividing the arc-shaped slit are concentrically formed. Among the arc-shaped slits, a plurality of arc-shaped slits close to the rotation shaft hole are divided and formed.

    In the rotor laminated core for a reluctance motor according to the invention of claim 1, since the caulking portion is formed on the rib that divides the arc-shaped slit, the substantial sectional area of the rib becomes as small as possible. The magnetic flux leaking through the ribs is reduced, so that the motor characteristics can be greatly improved.

  Further, in the rotor laminated core for reluctance motor according to the invention of claim 1, the rib that divides the arc-shaped slit is formed in the core piece, so that it is suitable for high-speed rotation against the centrifugal force accompanying rotation. Strength can be obtained, and the laminated core pieces can be firmly integrated by caulking and laminating the core pieces via caulking portions formed on the ribs.

  Therefore, according to the rotor laminated core for a reluctance motor according to the invention of claim 1, the reluctance motor is excellent in motor characteristics by suppressing leakage of magnetic flux, and has high mechanical strength and can be sufficiently applied to high-speed rotation. A rotor laminated iron core can be provided.

  In the rotor laminated core for a reluctance motor according to the invention of claim 2, ribs are formed in a position mode that divides the arc-shaped slit approaching the rotation shaft hole among the plurality of arc-shaped slits formed concentrically. Thus, in other words, the magnetic flux leaking along the salient pole direction can be suppressed as much as possible, compared to the configuration in which the ribs are formed that divide all the arc-shaped slits formed concentrically.

  In the rotor laminated iron core for a reluctance motor according to the invention of claim 3, the rib is formed in a position mode that divides a plurality of arc-shaped slits close to the rotation shaft hole among a plurality of arc-shaped slits formed concentrically. In other words, it is possible to suppress magnetic flux leaking along the salient pole direction as much as possible, compared to the configuration in which ribs that divide all arc-shaped slits formed concentrically are formed. Become.

  In the rotor laminated iron core for a reluctance motor according to the invention of claim 4, since a connecting hole into which the connecting body is inserted or injected is formed in the rib that divides the arc-shaped slit, the substantial cross-sectional area of the rib is increased. Since it becomes as small as possible, the magnetic flux that leaks through the rib is reduced, so that the motor characteristics can be greatly improved.

  Further, in the rotor laminated core for reluctance motors according to the invention of claim 4, the ribs for dividing the arc-shaped slits are formed in the core piece, so that it is adapted to high-speed rotation against the centrifugal force accompanying rotation. In addition to obtaining strength, the core pieces are integrated by inserting or injecting a connecting body into a connecting hole formed in the rib, whereby the stacked core pieces can be firmly integrated.

  Therefore, according to the rotor laminated core for a reluctance motor according to the invention of claim 4, the reluctance motor is excellent in motor characteristics by suppressing leakage of magnetic flux, and has high mechanical strength and can be sufficiently applied to high-speed rotation. A rotor laminated iron core can be provided.

  In the rotor laminated iron core for a reluctance motor according to the invention of claim 5, ribs are formed in a position mode that divides the arc-shaped slit approaching the rotation shaft hole among the plurality of arc-shaped slits formed concentrically. Thus, in other words, the magnetic flux leaking along the salient pole direction can be suppressed as much as possible, compared to the configuration in which the ribs are formed that divide all the arc-shaped slits formed concentrically.

  In the rotor laminated iron core for a reluctance motor according to the invention of claim 6, the rib is formed in a position mode that divides a plurality of arc-shaped slits close to the rotation shaft hole among the plurality of arc-shaped slits formed concentrically. In other words, it is possible to suppress magnetic flux leaking along the salient pole direction as much as possible, compared to the configuration in which ribs that divide all arc-shaped slits formed concentrically are formed. Become.

Hereinafter, the present invention will be described in detail with reference to the drawings illustrating embodiments.
1 to 3 show a first embodiment of a rotor laminated core for a reluctance motor according to the present invention, and this rotor laminated core (rotor laminated core for a reluctance motor) 10 has a predetermined number of cores. The pieces (rotor core pieces) 11, 11... Are stacked, and the core pieces 11, 11... Are integrated by a caulking portion (11 c) described later, and a rotation shaft hole 10 o is opened at the center. ing.

  Further, in the rotor laminated core 10, the rotary shaft hole 11 a side is projected on each of the core pieces 11, 11... So as to form a magnetic path in the magnetic salient pole direction and a magnetic path in the non-salient pole direction. Are formed concentrically, and a group of these concentric arc-shaped slits 11s, 11s... Is spaced around the rotation shaft hole 11a. A plurality of groups, four groups in the embodiment, are formed. Needless to say, the arc-shaped slit 11s is not limited to the arc-shaped form of the curved line shown in the embodiment, but may be an arc shape formed by, for example, a plurality of continuous short straight lines.

  With the above configuration, a magnetic path in the salient pole direction (dd axis) in which the magnetic flux easily flows is formed along the extending direction of the arc-shaped slits 11s, 11s, and the arc-shaped slits 11s, 11s,. A magnetic path in the non-salient pole direction (qq axis) in which the magnetic flux hardly flows is formed along the direction, and thus the rotor laminated core 10 is based on the difference in inductance between the salient pole direction and the non-salient pole direction. Rotation occurs due to reluctance torque generated.

  In the rotor laminated core 10, ribs 11 b, 11 b... That divide each arc-shaped slit 11 s are formed on all the arc-shaped slits 11 s, 11 s. The ribs 11b, 11b,... Are arranged on a straight line along the substantially radial direction of the iron core piece 11.

  Further, all the ribs 11b, 11b,... That divide the arc-shaped slits 11s, 11s,... Are formed with caulking portions 11c, 11c, respectively, and these caulking portions 11c, 11c,. By sequentially fitting, the iron core pieces 11, 11... Are caulked and integrated.

  In the rotor laminated core 10 having the above-described configuration, the caulking portion 11c is formed on the rib 11b that divides the arc-shaped slit 11s, so that the substantial cross-sectional area of the rib 11b becomes as small as possible. Since the magnetic flux leaking through 11b decreases, the motor characteristics can be greatly improved.

  Further, in the above-described rotor laminated core 10, the rib 11 b that divides the arc-shaped slit 11 s is formed in the iron core piece 11, and the rib 11 b functions as a reinforcing member for the iron core piece 11. It is possible to obtain a strength adapted to high-speed rotation against the centrifugal force.

  Further, in the rotor laminated core 10 described above, the caulking portion 11c is formed on the rib 11b that divides the arc-shaped slit 11s, so that the core pieces 11, 11,... Are caulked and firmly integrated by the caulking portion 11c. It becomes possible to do.

  Thus, the rotor laminated core 10 having the above-described configuration is excellent in motor characteristics by suppressing leakage of magnetic flux, and also has high mechanical strength and can be sufficiently applied to high-speed rotation.

  FIG. 4 shows a second embodiment of a rotor laminated iron core for a reluctance motor according to the present invention, and the iron core pieces 21, 21... Constituting the rotor laminated iron core 20 are provided around a rotary shaft hole 21a. Are formed with ribs 21b, 21b,... That divide the respective arc-shaped slits 21s, and some of these ribs 21b, 21b,. Are opened to form crimped portions 21c, 21c.

  Based on the same reason as the rotor laminated core 10 shown in FIGS. 1 to 3, the rotor laminated core 20 having the above-described configuration is excellent in motor characteristics by suppressing the leakage of magnetic flux, and mechanically combined. It has high strength and can be sufficiently applied to high-speed rotation.

  FIG. 5 shows a third embodiment of a rotor laminated core for a reluctance motor according to the present invention, and the core pieces 31, 31... Constituting the rotor laminated core 30 are formed concentrically. Of the arc-shaped slits 31s, 31s,... (Seven in the embodiment) arc-shaped slits 31s, 31s,. These ribs 31b, 31b... Are arranged on a straight line along the substantially radial direction of the iron core piece 31, and crimped portions 31c, 31c... Are formed on all the ribs 31b, 31b. ing.

  Based on the same reason as the rotor laminated core 10 shown in FIGS. 1 to 3, the rotor laminated core 30 having the above-described structure is excellent in motor characteristics by suppressing leakage of magnetic flux, and is mechanically combined. It has high strength and can be sufficiently applied to high-speed rotation.

  Further, according to the rotor laminated core 30, the magnetic flux leaking along the salient pole direction is made possible as compared with the configuration in which the ribs that divide all the arc-shaped slits 31s, 31s. Therefore, the motor characteristics can be further improved.

  Further, according to the rotor laminated core 30, the ribs 31 b, 31 b... Dividing the plurality of arc-shaped slits 31 s, 31 s. Twist during rotation of 30 can be effectively suppressed by the ribs 31b, 31b.

  FIG. 6 shows a fourth embodiment of a rotor laminated core for a reluctance motor according to the present invention. The core pieces 41, 41... Constituting the rotor laminated core 40 are formed concentrically. Of the arc-shaped slits 41 s, 41 s..., Ribs 41 b that divide a plurality of arc-shaped slits 41 s into a plurality of (seven in the embodiment) arc-shaped slits 41 s, 41 s. Are formed on two straight lines along the substantially radial direction of the iron core piece 41, and each of the ribs 41b, 41b. , 41c ... are formed.

  Based on the same reason as the rotor laminated core 10 shown in FIGS. 1 to 3, the rotor laminated core 40 having the above-described configuration is also excellent in motor characteristics by suppressing leakage of magnetic flux, and mechanically combined. It has high strength and can be sufficiently applied to high-speed rotation.

  Further, according to the rotor laminated core 40, the magnetic flux leaking along the salient pole direction is made possible as compared with the configuration in which the ribs that divide all the concentric arc-shaped slits 41s, 41s. Therefore, the motor characteristics can be further improved.

  Further, according to the rotor laminated core 40, the ribs 41b, 41b... That divide the plurality of arc-shaped slits 41s, 41s... Are formed in a portion close to the rotation shaft hole 41a. Twist during rotation of 40 can be effectively suppressed by the ribs 41b, 41b.

  FIGS. 7 to 9 show a fifth embodiment of a rotor laminated core for a reluctance motor according to the present invention, and this rotor laminated core (rotor laminated core for a reluctance motor) 50 has a predetermined number of cores. Are formed by laminating pieces (rotor core pieces) 51, 51..., And these core pieces 51, 51... Are integrated by a connecting body (52) to be described later. ing.

  Further, in the rotor laminated core 50, the rotary shaft hole 51a side is protruded from each of the core pieces 51, 51 ... in order to form a magnetic path in the magnetic salient pole direction and a magnetic path in the non-salient pole direction. Are formed concentrically, and a group of these concentrically formed arc-shaped slits 51s, 51s... Is spaced around the rotation shaft hole 11a. A plurality of groups, four groups in the embodiment, are formed. Needless to say, the arc-shaped slit 51s is not limited to the arc-shaped form of the curved line shown in the embodiment, but may be an arc-shape formed by, for example, a plurality of continuous short straight lines.

  With the above configuration, a magnetic path in the salient pole direction (dd axis) where the magnetic flux easily flows is formed along the extending direction of the arc-shaped slits 51s, 51s, and the arc-shaped slits 51s, 51s,. A magnetic path in the non-salient pole direction (qq axis) in which the magnetic flux does not easily flow is formed along the direction, and thus the rotor laminated core 50 is based on the difference in inductance between the salient pole direction and the non-salient pole direction. Rotation occurs due to reluctance torque generated.

  In the rotor laminated core 50, ribs 51b, 51b,... That divide the arc-shaped slits 51s are formed on all the arc-shaped slits 51s, 51s,. These ribs 51 b, 51 b... Are arranged on a straight line along the substantially radial direction of the iron core piece 51.

Further, all the ribs 51b, 51b,... That divide the arc-shaped slits 51s, 51s,... Are formed with connecting holes 51o, 51o, respectively. The core pieces 51, 51... Are integrated by inserting and fitting a rod-like coupling body 52 made of a nonmagnetic material such as resin material, aluminum, or nonmagnetic stainless steel as shown.
Incidentally, the connecting bodies 52, 52... May be members that are solidified after injecting a molten nonmagnetic material into the connecting holes 51o, 51o.

  In the rotor laminated core 50 having the above-described configuration, since the connection hole 51o is formed in the rib 51b that divides the arc-shaped slit 51s, the substantial cross-sectional area of the rib 51b becomes as small as possible. Since the magnetic flux leaking through 51b is reduced, the motor characteristics can be greatly improved.

  Further, in the above-described rotor laminated core 50, the rib 51 b that divides the arc-shaped slit 51 s is formed in the iron core piece 51, so that the rib 51 b functions as a reinforcing member of the iron core piece 51, thereby accompanying rotation. It is possible to obtain a strength adapted to high-speed rotation against the centrifugal force.

  Further, in the above-described rotor laminated core 50, the connecting hole 51o is formed in the rib 51b that divides the arc-shaped slit 51s, so that the connecting body 52 is inserted into the connecting hole 51o or solidified by injection and solidification. It is possible to firmly integrate the core pieces 51, 51.

  Thus, the rotor laminated core 50 having the above-described configuration is excellent in motor characteristics by suppressing leakage of magnetic flux, and has high mechanical strength and can be sufficiently applied to high-speed rotation.

  FIG. 10 shows a sixth embodiment of a rotor laminated core for a reluctance motor according to the present invention. The core pieces 61, 61... Constituting the rotor laminated core 60 are provided around a rotary shaft hole 61a. .., Ribs 61b, 61b... For dividing each arc-shaped slit 61s are formed in all the arc-shaped slits 61s, 61s.

  .. Are formed at intervals in some of the ribs 61b, 61b..., And the connection holes 62o, 61o. Is inserted fit or injection solidified.

  Based on the same reason as the rotor laminated core 50 shown in FIGS. 7 to 9, the rotor laminated core 60 having the above-described configuration is excellent in motor characteristics by suppressing the leakage of magnetic flux and is mechanically combined. It has high strength and can be sufficiently applied to high-speed rotation.

  FIG. 11 shows a seventh embodiment of a rotor laminated core for a reluctance motor according to the present invention. The core pieces 71, 71... Constituting the rotor laminated core 70 are formed concentrically. Of the arc-shaped slits 71s, 71s,... (Seven in the embodiment) arc-shaped slits 71s, 71s,. Is formed.

  The ribs 71b, 71b,... Are arranged on a straight line along the substantially radial direction of the iron core piece 71, and all the ribs 71b, 71b,. In the holes 71o, 71o..., Connecting bodies 72, 72.

  Based on the same reason as the rotor laminated core 50 shown in FIGS. 7 to 9, the rotor laminated core 70 having the above-described configuration is excellent in motor characteristics by suppressing the leakage of magnetic flux and is mechanically combined. It has high strength and can be sufficiently applied to high-speed rotation.

  Further, according to the rotor laminated core 70, the magnetic flux leaking along the salient pole direction is made possible as compared with the configuration in which the ribs that divide all the arc-shaped slits 71s, 71s,. Therefore, the motor characteristics can be further improved.

  Further, according to the rotor laminated core 70, the ribs 71b, 71b... That divide the plurality of arc-shaped slits 71s, 71s. Twist during rotation of the 70 can be effectively suppressed by the ribs 71b, 71b.

  FIG. 12 shows an eighth embodiment of a rotor laminated core for a reluctance motor according to the present invention, and the core pieces 81, 81... Constituting the rotor laminated core 80 are formed concentrically. Of the arc-shaped slits 81s, 81s, ribs 81b for dividing a plurality of arc-shaped slits 81s into a plurality (seven in the embodiment) arc-shaped slits 81s, 81s. 81b... Are formed.

  These ribs 81b, 81b... Are arranged on two straight lines along the substantially radial direction of the core piece 81, and all the ribs 81b, 81b. In these connection holes 81o, 81o, etc., connection bodies 82, 82, etc. made of a non-magnetic material are inserted and fitted or injected and solidified.

  Based on the same reason as the rotor laminated core 50 shown in FIGS. 7 to 9, the rotor laminated core 80 having the above-described configuration is excellent in motor characteristics by suppressing the leakage of magnetic flux and is mechanically combined. It has high strength and can be sufficiently applied to high-speed rotation.

  Further, according to the rotor laminated core 80 described above, the magnetic flux leaking along the salient pole direction is made possible as compared with the configuration in which the ribs that divide all the concentric arc-shaped slits 81s, 81s. Therefore, the motor characteristics can be further improved.

  Further, according to the rotor laminated core 80, the ribs 81b, 81b... For dividing the plurality of arc-shaped slits 81s, 81s... Are formed in a portion close to the rotation shaft hole 81a. The twist during the rotation of 80 can be effectively suppressed by the ribs 81b, 81b.

(a) And (b) is an external appearance top view and external appearance side view which show the 1st Example of the rotor laminated iron core for reluctance motors concerning this invention. The principal part top view of the core piece in the rotor lamination | stacking iron core for reluctance motors shown in FIG. III-III sectional view taken on the line in FIG. The principal part top view of the core piece which shows the 2nd Example of the rotor lamination | stacking iron core for reluctance motors concerning this invention. The principal part top view of the core piece which shows the 3rd Example of the rotor lamination | stacking iron core for reluctance motors concerning this invention. The principal part top view of the core piece which shows the 4th Example of the rotor lamination | stacking iron core for reluctance motors concerning this invention. (a) And (b) is the external appearance top view and external appearance side view which show the 5th Example of the rotor laminated iron core for reluctance motors concerning this invention. The principal part top view of the core piece in the rotor lamination | stacking iron core for reluctance motors shown in FIG. IX-IX line sectional view in FIG. The principal part top view of the core piece which shows the 6th Example of the rotor lamination | stacking iron core for reluctance motors concerning this invention. The principal part top view of the core piece which shows the 7th Example of the rotor lamination | stacking iron core for reluctance motors concerning this invention. The principal part top view of the core piece which shows the 8th Example of the rotor lamination | stacking iron core for reluctance motors concerning this invention. (a) And (b) is an external appearance top view and external appearance side view of the conventional rotor lamination | stacking iron core for reluctance motors. The principal part top view of the core piece in the conventional rotor lamination | stacking iron core for reluctance motors.

Explanation of symbols

10, 20, 30, 40 ... rotor laminated core for reluctance motor,
11, 21, 31, 41 ... iron core pieces,
11a, 21a, 31a, 41a ... rotating shaft hole,
11s, 21s, 31s, 41s ... arc-shaped slits,
11b, 21b, 31b, 41b ... ribs,
11c, 21c, 31c, 41c ... caulking part,
50, 60, 70, 80 ... rotor laminated core for reluctance motor,
51, 61, 71, 81 ... iron core pieces,
51a, 61a, 71a, 81a ... rotating shaft hole,
51s, 61s, 71s, 81s ... arc-shaped slits,
51b, 61b, 71b, 81b ... ribs,
51o, 61o, 71o, 81o ... connecting holes,
52, 62, 72, 82...

Claims (6)

A plurality of arc-shaped slits convex on the rotating shaft hole side are formed concentrically, and the plurality of arc-shaped slits are formed by laminating iron core pieces formed at intervals around the rotating shaft hole, Due to the reluctance torque generated based on the difference in inductance between the salient pole direction in which the magnetic flux easily flows along the extending direction of the arc-shaped slit and the non-salient pole direction in which the magnetic flux does not easily flow along the parallel direction of the arc-shaped slit. In the rotor laminated core for rotating reluctance motor,
A rotor laminated iron core for a reluctance motor, wherein a rib for dividing the arc-shaped slit is formed on the iron core piece, a caulking portion is formed on the rib, and the iron core piece is caulked and laminated. The rib for dividing the arc-shaped slit is formed by dividing an arc-shaped slit approaching the rotation shaft hole among a plurality of concentric arc-shaped slits. Rotor laminated core for reluctance motor. The rib for dividing the arc-shaped slit is formed by dividing a plurality of arc-shaped slits close to the rotation shaft hole among a plurality of concentric arc-shaped slits. The rotor laminated iron core for reluctance motors according to 2. A plurality of arc-shaped slits convex on the rotating shaft hole side are formed concentrically, and the plurality of arc-shaped slits are formed by laminating iron core pieces formed at intervals around the rotating shaft hole, Due to the reluctance torque generated based on the difference in inductance between the salient pole direction in which the magnetic flux easily flows along the extending direction of the arc-shaped slit and the non-salient pole direction in which the magnetic flux does not easily flow along the parallel direction of the arc-shaped slit. In the rotor laminated core for rotating reluctance motor,
A rib that divides the arc-shaped slit is formed in the iron core piece, and a connecting hole is formed in the rib. A rotor laminated iron core for a reluctance motor characterized by being integrated. The rib for dividing the arc-shaped slit is formed by dividing an arc-shaped slit close to the rotation shaft hole among a plurality of concentric arc-shaped slits. Rotor laminated core for reluctance motor. The rib for dividing the arc-shaped slit is formed by dividing a plurality of arc-shaped slits close to the rotation shaft hole among a plurality of concentric arc-shaped slits. 5. A rotor laminated core for a reluctance motor according to 5.

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