JP4767902B2 - Rotating electric machine - Google Patents

Description

The present invention includes a first flange member including a stator, a first rotor, and a second rotor, wherein the first rotor is made of a conductive material and is spaced apart so as to face each other on a common axis. The outer peripheral portions of the second flange member are connected by a plurality of connecting members that are made of a conductive weak magnetic material and are arranged at predetermined intervals in the circumferential direction around the axis, and are adjacent in the circumferential direction. about the configured electric rotating machine supports the induction magnetic poles made of a soft magnetic material between connection members.

An annular stator having a plurality of armatures and generating a rotating magnetic field is fixed to a casing, and a first rotor that supports a plurality of permanent magnets on the outer periphery is rotatably supported inside the stator, and a plurality of soft magnetic bodies The cylindrical second rotor that supports the magnetic induction magnetic pole is rotatably supported between the stator and the first rotor, so that output can be separately taken out from the first rotor and the second rotor. A shaft output type electric motor is known from Patent Document 1 below.
JP-A-8-111963

  By the way, the second rotor of the two-shaft output motor described in Patent Document 1 is formed in a bowl shape by connecting two disc-shaped rotor frames with a plurality of rod-shaped fixing members. The structure is such that a soft magnetic material is supported between fixed members adjacent in the direction. However, since the connecting portion between the two rotor frames and both ends of the plurality of fixing members is not insulated in the second rotor, eddy currents generated during operation are generated in one rotor frame, the fixing member, the other rotor frame, and By flowing through a closed circuit composed of a fixed member, there is a possibility that large heat generation and energy loss may occur.

  The present invention has been made in view of the above-described circumstances, and an object thereof is to minimize heat generation and energy loss by minimizing eddy current generated in a rotor of a rotating electrical machine.

To achieve the above object, according to the invention described in claim 1, a stator having a plurality of electric elements arranged in the circumferential direction and a plurality of soft magnetic bodies arranged in the circumferential direction are made. A first rotor having an induction magnetic pole and a second rotor having a plurality of permanent magnets arranged in a circumferential direction, the first rotor being made of a conductive material and facing each other on a common axis A plurality of first flange members and second flange members that are arranged so as to be spaced apart from each other and are made of a conductive weak magnetic material and arranged at predetermined intervals in the circumferential direction around the axis. linked by a linking member, in the rotating electric machine configured to support the induction magnetic poles between the connecting member adjacent to the circumferential direction, and wherein the electrically be insulated between the first, second flange member rotary electric machine is proposed to.

According to the second aspect of the present invention, in addition to the configuration of the first aspect, the radial thickness of the coupling member is larger than the radial thickness of the induction magnetic pole at a portion where the coupling member and the induction magnetic pole are in contact with each other. rotary electric machine is proposed which is characterized in that a smaller of.

According to the invention described in claim 3, in addition to the configuration of claim 1 or claim 2, rotary electric machine, wherein the connecting member is made of stainless steel is proposed.

According to the invention described in claim 4, in addition to the configuration of claim 1 or claim 2, rotary electric machine is proposed, wherein the connecting member is made of aluminum or an aluminum alloy .

According to the invention described in claim 5, in addition to the configuration of claim 1 or claim 2, rotary electric machine is proposed, wherein the connecting member is made of titanium or titanium alloy .

According to the invention described in claim 6, in addition to any one of claims 1 to 5, rotary electric machine, characterized in that said connecting member is insulated surface Is proposed.

The first and second stators 12L and 12R of the embodiment correspond to the stator of the present invention, the outer rotor 13 of the embodiment corresponds to the first rotor of the present invention, and the inner rotor 14 of the embodiment is Corresponding to the second rotor of the present invention, the first and second electric elements 21L, 21R of the embodiment correspond to the electric element of the present invention, and the first induction magnetic pole 39L and the second induction magnetic pole 39R of the embodiment are Corresponding to the induction magnetic pole of the present invention, the first and second permanent magnets 52L and 52R of the embodiment correspond to the permanent magnet of the present invention .

According to the configuration of claim 1, when a rotating magnetic field is generated by energizing the stator armature, the induction magnetic pole of the first rotor is magnetized according to the positional relationship between the stator, the first rotor, and the second rotor, and induction is performed. The first rotor and the second rotor rotate with respect to the stator by the magnetic force acting between the magnetic pole, the electric element, and the permanent magnet. At this time, the outer peripheral portions of the first and second flange members made of conductive material are connected by a plurality of weak magnetic conductive material connecting members arranged at predetermined intervals in the circumferential direction, and adjacent in the circumferential direction. together constitute support the induction magnetic poles made of soft magnetic material between connection members, first, since the electrically insulating between the second flange member, the first flange member during operation, the coupling member, the second flange member And the eddy current which flows through the closed circuit comprised with a connection member can be reduced, and the heat_generation | fever and energy loss accompanying an eddy current can be suppressed to the minimum.

  According to the second aspect of the present invention, since the radial thickness of the coupling member is made smaller than the radial thickness of the induction magnetic pole at the portion where the coupling member and the induction magnetic pole are in contact with each other, the cross-sectional area of the coupling member is reduced to reduce the eddy current. Can be further reduced.

  Further, according to the configuration of claim 3, since the connecting member is made of stainless steel, not only the electrical resistance value becomes high and eddy current is suppressed, but also the material cost is low and the processing is easy. .

  According to the fourth aspect of the present invention, since the connecting member is made of aluminum or aluminum alloy, the material cost is low, it is easy to process, and the surface treatment for interrupting eddy current is easy. It is.

  According to the fifth aspect of the present invention, since the connecting member is made of titanium or a titanium alloy, the electrical resistance value is increased to suppress the eddy current, and the weight is lighter than the strength. In addition, the weight of the rotor can be reduced.

  According to the configuration of the sixth aspect, since the surface of the connecting member is insulated, the contact portion between the connecting member and the flange member can be insulated without using a special insulating member to reduce eddy current.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

  1 to 20 show a first embodiment of the present invention. FIG. 1 is a front view of the electric motor viewed in the axial direction (a view taken along the line 1-1 in FIG. 2), and FIG. FIG. 3 is a sectional view taken along line 3-3 in FIG. 2, FIG. 4 is a sectional view taken along line 4-4 in FIG. 2, FIG. 5 is a sectional view taken along line 5-5 in FIG. 5 is a sectional view taken along line 6-6 in FIG. 5, FIG. 7 is a sectional view taken along line 7-7 in FIG. 5, FIG. 8 is a sectional view taken along line 8-8 in FIG. 10 is an exploded perspective view of the electric motor, FIG. 11 is an exploded perspective view of the inner rotor, FIG. 12 is a perspective view of the connecting member and the induction magnetic pole, FIG. 13 is a perspective view of the spring, FIG. 14 is a perspective view of the ring, and FIG. FIG. 16 is an operation explanatory diagram when the inner rotor is fixed (part 1), FIG. 17 is an operation explanatory diagram when the inner rotor is fixed (part 2), and FIG. Inn FIG. 19 is an operation explanatory diagram when the outer rotor is fixed (part 1), and FIG. 20 is an operation explanatory diagram when the outer rotor is fixed (part 2). is there.

  As shown in FIG. 10, the electric motor M of the present embodiment includes a casing 11 that has a short octagonal cylindrical shape in the direction of the axis L, and annular first and second stators 12 </ b> L that are fixed to the inner periphery of the casing 11. 12R, a cylindrical outer rotor 13 that is housed in the first and second stators 12L, 12R and rotates about the axis L, and a cylindrical outer rotor 13 that is housed in the outer rotor 13 and rotates about the axis L The outer rotor 13 and the inner rotor 14 are rotatable relative to the fixed first and second stators 12L and 12R, and the outer rotor 13 and the inner rotor 14 are mutually connected. Relative rotation is possible.

  As shown in FIGS. 1 and 2, the casing 11 includes a bottomed octagonal cylindrical main body portion 15 and an octagonal plate-like lid portion 17 fixed to the opening of the main body portion 15 with a plurality of bolts 16. In the body portion 15 and the lid portion 17, a plurality of openings 15a,.

  As shown in FIGS. 1 to 4 and 10, the first and second stators 12 </ b> L and 12 </ b> R are superposed with the same structure shifted in the circumferential direction, and one of the first stators 12 </ b> L is attached. The structure will be explained for an example. The first stator 12L includes a plurality of (in the embodiment, 24) first armatures 21L ... around which coils 20 are wound around an outer periphery of a core 18 made of laminated steel plates via an insulator 19. The one armature 21L is integrated by a ring-shaped holder 22 in a state of being coupled in the circumferential direction so as to form an annular shape as a whole. Flange 22a ... projecting radially from one end in the axis L direction of holder 22 is fixed to step 15b (see Fig. 2) on the inner surface of main body 15 of casing 11 with a plurality of bolts 23 ....

  Like the first stator 12L described above, the second stator 12R includes 24 second armatures 21R, and the flanges 22a of the holder 22 are stepped portions 15c on the inner surface of the main body 15 of the casing 11 ( 2), a plurality of bolts 24 are fixed. At this time, the circumferential phases of the first stator 12L and the second stator 12R are shifted from each other by half the pitch of the first and second permanent magnets 52L, 52R,. (See FIG. 4). The first and second armatures 21L, 21R,... Of the first and second stators 12L, 12R to 3 terminals 25, 26, 27 (see FIG. 1) 3 provided on the main body 15 of the casing 11. By supplying the phase alternating current, a rotating magnetic field can be generated in the first and second stators 12L and 12R.

  As shown in FIGS. 2 and 10, the bowl-shaped rotor body 31 of the outer rotor 13 includes disk-shaped first and second flange members 32 and 33 made of iron or steel as a conductive material, It is constructed by assembling a plurality (20 in the embodiment) of rod-like connecting members 34 made of aluminum or an aluminum alloy, which is a conductive weak magnetic material. A first outer rotor shaft 32a protruding on the axis L from the center of the first flange member 32 is rotatably supported on the lid portion 17 of the casing 11 by a ball bearing 35, and the axis L from the center of the second flange member 33. A second outer rotor shaft 33a protruding upward is rotatably supported by the main body 15 of the casing 11 by a ball bearing 36. The second outer rotor shaft 33a serving as the output shaft of the outer rotor 13 passes through the main body portion 15 of the casing 11 and extends to the outside.

  The weak magnetic material is a material that is not attracted to the magnet, and includes, for example, resin and wood in addition to aluminum and the like, and is sometimes called a non-magnetic material.

  Since the first and second flange members 32 and 33 are basically disk-like members and the connecting member 34 is basically a rod-like member, when they are formed by die casting, for example, they are small in size. It is possible to use a mold having a simple structure, and the mass productivity of the rotor body 31 can be increased and the manufacturing cost can be reduced.

  As shown in FIG. 12, the connecting member 34 includes a pair of circular cross-section positioning portions 34a and 34a formed at both ends, a pair of non-circular cross-section detent portions 34b and 34b connected to the inside thereof, A pair of induction magnetic pole support portions 34c, 34c provided continuously on the inside, a one-step thick ring support portion 34d provided on the inside thereof, and a square cross section projecting on both side surfaces of the entire length excluding the positioning portions 34a, 34a. The hook-shaped projections 34e and 34e are provided, and a locking projection 34f is projected radially outward from one end of the ring support 34d.

  As shown in FIGS. 6 to 8, annular grooves 32b and 33b are formed on the inner surfaces of the outer peripheral portions of the first and second flange members 32 and 33, and circular cross sections are formed at the bottoms of the annular grooves 32b and 33b. Positioning holes 32c and 33c are formed, and the bottoms of these positioning holes 32c and 33c communicate with the outer peripheral surface of the first and second flange members 32 and 33 through the bolt holes 32d and 33d. The bolt 37 is connected to the washer 38 and the first flange member 32 in a state where the rotation preventing portion 34b and the positioning portion 34a on one end side of the connecting member 34 are fitted in the annular groove 32b and the positioning hole 32c of the first flange member 32, respectively. One end side of the 20 connecting members 34 is connected to the first flange member 32 by passing through the bolt hole 32d and screwing into the female thread portion 34g of the connecting member 34.

  In the same manner, the bolt 37 is attached to the washer 38 and the first ring while the rotation preventing portion 34b and the positioning portion 34a on the other end side of the connecting member 34 are fitted in the annular groove 33b and the positioning hole 33c of the second flange member 33, respectively. The other end side of the 20 connecting members 34 is connected to the second flange member 33 by passing through the bolt hole 33d of the two flange member 33 and screwing into the female thread portion 34g of the connecting member 34. As a result, the first and second flange members 32 and 33 and the 20 connecting members 34.

  At this time, the positions of the connecting members 34... With respect to the first and second flange members 32 and 33 are precisely positioned by fitting the positioning portions 34a and 34a having a circular cross section with the positioning holes 32c and 33c having a circular cross section. The relative rotation of the connecting members 34 with respect to the first and second flange members 32, 33 is restricted by the fitting of the detents 34b, 34b of the cross section and the annular grooves 32b, 33b, thereby the first and second flanges. The connecting members 34... Can be positioned at right angles to the members 32 and 33 to ensure the assembly accuracy of the outer rotor 13.

  As shown in FIG. 6 in an enlarged manner, the surface of the second flange member 33 is provided with an insulating coating a made of hard anodized, and similarly, the surface of each connecting member 34 is provided with an insulating coating b made of hard anodized. It has been subjected. Further, the iron washer 38 used when the connecting members 34 are fixed to the second flange member 33 with bolts 37 has an insulating coating c made of polyamideimide on the surface thereof. The bolt 37 passes through the bolt hole 33d of the second flange member 33 with a gap, and is screwed into the female thread portion 34g of the connecting member 34. Therefore, the right end of the connecting member 34 and the second flange 33 are electrically insulated. With the same structure, the left end of the connecting member 34 and the first flange member 32 are electrically insulated, and are configured via the first flange member 32, the connecting member 34, the second flange member 33, and the connecting member 34. The electrical closed circuit (see the arrow in FIG. 5) can be reliably interrupted.

  As shown in FIG. 5, 20 slits extending in parallel with the axis L are formed between the 20 connecting members 34, and each slit is provided with a first induction magnetic pole 39L made of soft magnetic material and a weak magnetic material. A ring 40 made of soft magnetic material and a second induction magnetic pole 39R made of soft magnetic material are inserted and supported from one end side of the rotor body 31 in the axis L direction.

  As shown in FIG. 12, the first and second induction magnetic poles 39L, 39R are composed of a large number of steel plates stacked in the direction of the axis L, and on both side surfaces along the axis L, concave portions 39a, 39a is formed, and these concave portions 39a, 39a are engaged with the convex portions 34e, 34e of the connecting members 34, 34 located on both sides thereof, so that the first and second induction magnetic poles 39L, 39R Radial dropout is prevented. Since it is inevitable that a slight gap is generated between the convex portions 34e and 34e and the concave portions 39a and 39a, the first and second induction magnetic poles 39L, 39R, ... are relative to the connecting member 34, ... In order to prevent movement and noise generation, the concave and convex engaging portion is fixed with an adhesive 59 (see FIG. 9).

  By the way, in the embodiment, the concave portions 39a, 39a of the first and second induction magnetic poles 39L, 39R and the convex portions 34e, 34e of the connecting member 34 are both square cross sections. The gap between the portions can be reduced, and noise can be reduced without using the adhesive 59.

  The first induction magnetic pole 39L, the ring 40, and the second induction magnetic pole 39R are assembled in a state where, for example, one end of the connecting member 34 is coupled to the first flange member 32, and then the other end of the connecting member 34. The 2nd flange member 33 is couple | bonded with.

  As shown in FIG. 14, the ring 40 is a ring-shaped metal plate formed in an annular shape, and a plurality of (20 in the embodiment) positioning grooves are provided at 18 ° intervals on the edge of the second flange member 33 side. 40b... Are recessed.

  As shown in FIGS. 5 to 7, when the outer rotor 13 rotates, the connecting members 34 try to bend radially outward by the centrifugal force applied to the first and second induction magnetic poles 39L, 39R, By pressing the central portion of the members 34 in the direction of the axis L inward in the radial direction with the ring 40, the deformation of the connecting members 34 can be effectively suppressed and the outer rotor 13 can be rotated at high speed.

  In particular, since the ring 40 is disposed between the first induction magnetic poles 39L ... and the second induction magnetic poles 39R ..., the centrifugal force acting on the first and second induction magnetic poles 39L ... 39R ..., which are heavy in weight, is effectively prevented. Can be supported. Moreover, by supporting the centrifugal force with the ring 40, the connecting members 34 can be made thinner, which can contribute to the reduction of eddy currents.

  As shown in FIG. 5 and FIG. 7, the first and second induction magnetic poles 39L and 39R fitted into the slits between the pair of adjacent coupling members 34 and 34 are a pair of first and second springs 41L and 41R. They are biased in the directions approaching each other and positioned in the direction of the axis L by the following method.

  Since each of the 20 first and second springs 41L,... 41R has the same structure, the structure of one of the second springs 41R will be described. The second spring 41R is obtained by punching a sheet metal into a predetermined shape and bending it, and includes a first locking portion 41a, a second locking portion 41b, and a pressing portion 41c (see FIG. 13). A locking hole 33e is formed in the bottom of the annular groove 33b of the second flange member 33. The first locking part 41a is engaged with the locking hole 33e, and the second engagement is formed on the outer peripheral wall of the annular groove 33b. By inserting the stopper 41b in a compressed state, the second spring 41R is supported by the annular groove 33b of the second flange member 33. In this state, the pressing portion 41c of the second spring 41R is placed on the end surface of the second induction magnetic pole 39R. The elastic force F2 (refer to FIG. 7) that abuts on the left side in the direction of the axis L is generated.

  The first spring 41L is mounted in the annular groove 32b of the first flange member 32 with the same structure as the second spring 41R described above, and in this state, the pressing portion 41c of the first spring 41L is placed on the end surface of the first induction magnetic pole 39L. The elastic force F1 (refer to FIG. 7) is generated in contact with the axis L in the right direction. At this time, since the first and second induction magnetic poles 39L and 39R are pressed by the first and second springs 41L and 41R from both sides with the ring 40 interposed therebetween, the position in the direction of the axis L is regulated as follows. The structure is adopted.

  That is, in FIG. 7, the first induction magnetic pole 39 </ b> L pressed to the right by the elastic force F <b> 1 of the left first spring 41 </ b> L and the ring 40 in contact with the first induction magnetic pole 39 </ b> L are pressed to the right and are positioned at the right end of the ring 40. The groove 40b (see FIG. 14) contacts the locking protrusion 34f of the connecting member 34 from the left side and is positioned in the axis L direction. On the other hand, the second induction magnetic pole 39R pressed to the left side by the resilient force F2 of the right second spring 41R contacts the right end of the ring 40 from the right side and is positioned in the axis L direction. At this time, if the elastic force F2 of the right second spring 41R is stronger than the elastic force F1 of the left first spring 41L, the ring 40 and the first induction are generated by the elastic force F2 of the right second spring 41R. Since the magnetic pole 39L is pushed back to the left side and the engagement between the positioning groove 40b of the ring 40 and the locking projection 34f of the connecting member 34 may be disengaged, the elastic force F1 of the first spring 41L on the left side Is set stronger than the resilient force F2 of the right second spring 41R. The difference between the elastic forces F1 and F2 can be adjusted by the difference in the materials of the first and second springs 41L and 41R and the difference in compression allowance.

  As described above, the first and second induction magnetic poles 39L and 39R are arranged on both sides in the axis L direction of the ring 40, and the first and second induction magnetic poles 39L and 39R are mutually connected by the first and second springs 41L and 41R. Since it is urged in the approaching direction and pressed against both side edges of the ring 40, even if there is a variation in the dimension in the axis L direction of the first and second induction magnetic poles 39L, 39R, the variation in the dimension is absorbed. The first and second induction magnetic poles 39L and 39R can be securely fixed.

  Further, the positioning groove 40b of the ring 40 is locked to the locking projection 34f of the connecting member 34 and positioned in the direction of the axis L, and in this state, the first and second induction magnetic poles 39L and 39R are pressed against and fixed to the ring 40. Therefore, the first and second induction magnetic poles 39L and 39R can be accurately positioned in the axis L direction even if an elastic force is applied by the first and second springs 41L and 41R from both sides in the axis L direction. Furthermore, since the positioning groove 40b of the ring 40 is locked to the locking protrusion 34f of the connecting member 34, the circumferential positioning of the ring 40 is also achieved.

  As shown in FIG. 2, the 1st resolver 42 for detecting the rotation position of the outer rotor 13 is provided so that the 2nd outer rotor shaft 33a of the outer rotor 13 may be enclosed. The first resolver 42 includes a resolver rotor 43 fixed to the outer periphery of the second outer rotor shaft 33a, and a resolver stator 44 fixed to the lid portion 17 of the casing 11 so as to surround the resolver rotor 43. The

  As shown in FIGS. 2 to 4 and 11, the inner rotor 14 includes a rotor body 45 formed in a cylindrical shape, and an inner rotor shaft 47 that passes through a hub 45 a of the rotor body 45 and is fixed by bolts 46. The annular first and second rotor cores 48L and 48R are made of laminated steel plates and are fitted to the outer periphery of the rotor body 45, and the annular spacer 49 is fitted to the outer periphery of the rotor body 45. One end of the inner rotor shaft 47 is rotatably supported by the ball bearing 50 on the axis L inside the second outer rotor shaft 33a, and the other end of the inner rotor shaft 47 is ball bearing inside the first outer rotor shaft 32a. The first outer rotor shaft 32 a and the lid portion 17 of the casing 11 pass through the first outer rotor shaft 32 a and extend outside the casing 11 as an output shaft of the inner rotor 14.

  The first and second rotor cores 48L and 48R fitted to the outer periphery of the rotor body 45 have the same structure, and a plurality (20 in the embodiment) of permanent magnet support holes 48a. 3 and FIG. 4), and first and second permanent magnets 52L... 52R are press-fitted in the direction of the axis L. The polarities of the adjacent first permanent magnets 52L of the first rotor core 48L are alternately reversed, the polarities of the adjacent second permanent magnets 52R of the second rotor core 48R are alternately reversed, and the first rotor core The circumferential phase of the 48L first permanent magnets 52L and the circumferential phase of the second permanent magnets 52R of the second rotor core 48R are shifted from each other by half of their pitch (FIG. 3). And FIG. 4).

  A weak magnetic spacer 49 is fitted in the center of the outer circumference of the rotor body 45 in the axis L direction, and a pair of inner permanent magnet support plates 53 that prevent the first and second permanent magnets 52L, 52R,. , 53 are fitted to each other, the first and second rotor cores 48L, 48R are fitted to the outer sides thereof, and the first and second permanent magnets 52L, 52R,. Magnet support plates 54 and 54 are respectively fitted, and a pair of stopper rings 55 and 55 are fixed to the outside by press-fitting.

  As shown in FIG. 2, a second resolver 56 for detecting the rotational position of the inner rotor 14 is provided so as to surround the inner rotor shaft 47. The second resolver 56 includes a resolver rotor 57 fixed to the outer periphery of the inner rotor shaft 47 and a resolver stator 58 fixed to the lid portion 17 of the casing 11 so as to surround the resolver rotor 57.

  3 and 4, the first armature 21L of the first stator 12L is formed on the outer peripheral surface of the first induction magnetic pole 39L exposed on the outer peripheral surface of the outer rotor 13 through a slight air gap. The inner peripheral surface of the first rotor core 48L of the inner rotor 14 is opposed to the inner peripheral surface of the first induction magnetic pole 39L exposed to the inner peripheral surface of the outer rotor 13 through a slight air gap. opposite. Similarly, the inner peripheral surface of the second armature 21R of the second stator 12R is opposed to the outer peripheral surface of the second induction magnetic poles 39R exposed on the outer peripheral surface of the outer rotor 13 through a slight air gap. The outer peripheral surface of the second rotor core 48R of the inner rotor 14 is opposed to the inner peripheral surface of the second induction magnetic poles 39R exposed on the inner peripheral surface of the rotor 13 with a slight air gap.

  Next, the operation principle of the electric motor M according to the first embodiment having the above configuration will be described.

  FIG. 15 schematically shows a state where the electric motor M is developed in the circumferential direction. 15 are shown first and second permanent magnets 52L, 52R,... Of the inner rotor 14, respectively. The first and second permanent magnets 52L, 52R,..., 52R,... Are alternately arranged with N and S poles at a predetermined pitch P in the circumferential direction (vertical direction in FIG. 15). The two permanent magnets 52R are arranged so as to be shifted by a half of the predetermined pitch P, that is, by a half pitch P / 2.

  15, virtual permanent magnets 21 corresponding to the first and second armatures 21L, 21R,... Of the first and second stators 12L, 12R are arranged at a predetermined pitch P in the circumferential direction. . Actually, the number of first and second armatures 21L, 21R,... Of the first and second stators 12L, 12R is 24, and the first and second permanent magnets 52L, 52R of the inner rotor 14 are each. Since the number of... Is 20, each, the pitch of the first and second armatures 21L, 21R,... Does not coincide with the pitch P of the first, second permanent magnets 52L, 52R,. .

  However, since the first and second armatures 21L,..., 21R each form a rotating magnetic field, the first and second armatures 21L,. It can be replaced with 20 virtual permanent magnets 21. Hereinafter, the first and second armatures 21L, 21R,... Are referred to as first, second virtual magnetic poles 21L, 21R,. The polarities of the first and second virtual magnetic poles 21L, 21R,... Of the virtual permanent magnets 21 ... adjacent to each other in the circumferential direction are alternately reversed, and the first virtual magnetic poles 21L ... The two virtual magnetic poles 21R are shifted by a half pitch P / 2 in the circumferential direction.

  The first and second induction magnetic poles 39L, 39R,... Of the outer rotor 13 are arranged between the first and second permanent magnets 52L, 52R, and the virtual permanent magnets 21,. The first and second induction magnetic poles 39L, 39R are arranged at a pitch P in the circumferential direction, and the first induction magnetic poles 39L and the second induction magnetic poles 39R are aligned in the axis L direction.

  As shown in FIG. 15, when the polarity of the first virtual magnetic pole 21 </ b> L of the virtual permanent magnet 21 is different from the polarity of the first permanent magnet 52 </ b> L facing (closest) to the first virtual magnetic pole 21 </ b> L, The polarity is the same as the polarity of the second permanent magnet 52R facing (closest) to it. When the polarity of the second virtual magnetic pole 21R of the virtual permanent magnet 21 is different from the polarity of the second permanent magnet 52R facing (closest), the polarity of the first virtual magnetic pole 21L of the virtual permanent magnet 21 faces it. It becomes the same as the polarity of the (closest) first permanent magnet 52L (see FIG. 17G).

  First, the first and second stators 12L and 12R (first and second virtual magnetic poles 21L... 21R...) With the inner rotor 14 (first and second permanent magnets 52L... 52R...) Fixed in a non-rotatable state. ) To generate a rotating magnetic field, the operation when the outer rotor 13 (first and second induction magnetic poles 39L, 39R,...) Is rotationally driven will be described. In this case, it is fixed in the order of FIG. 16 (A) → FIG. 16 (B) → FIG. 16 (C) → FIG. 16 (D) → FIG. 17 (E) → FIG. 17 (F) → FIG. The virtual permanent magnets 21 ... rotate downward in the figure with respect to the first and second permanent magnets 52L ... 52R ..., so that the first and second induction magnetic poles 39L ... 39R ... rotate downward in the figure. .

  As shown in FIG. 16A, the first induction magnetic poles 39L are aligned and opposed to the first virtual poles 21L of the first permanent magnets 52L and the virtual permanent magnets 21 that face each other. The virtual permanent magnets 21 are rotated downward in the drawing from the state where the second induction magnetic poles 39R are shifted by a half pitch P / 2 with respect to the two virtual magnetic poles 21R and the second permanent magnets 52R. At the start of the rotation, the polarities of the first virtual magnetic poles 21L ... of the virtual permanent magnets 21 ... are different from the polarities of the first permanent magnets 52L ... opposite thereto, and the second virtual magnetic poles 21R of the virtual permanent magnets 21 ... The polarity of... Is the same as the polarity of the second permanent magnet 52R.

  Since the first induction magnetic poles 39L ... are disposed between the first permanent magnets 52L ... and the first virtual magnetic poles 21L ... of the virtual permanent magnets 21 ..., the first induction magnetic poles 39L ... The first magnetic lines G1 are generated between the first permanent magnets 52L, the first induction magnetic poles 39L, and the first virtual magnetic poles 21L. Similarly, since the second induction magnetic poles 39R ... are disposed between the second virtual magnetic poles 21R ... and the second permanent magnets 52R ..., the second induction magnetic poles 39R ... are made the second virtual magnetic poles 21R ... and the second permanent magnets 52R. Are magnetized, and second magnetic lines of force G2 are generated between the second virtual magnetic poles 21R, second induction magnetic poles 39R, and second permanent magnets 52R.

  In the state shown in FIG. 16A, the first magnetic field lines G1 are generated so as to connect the first permanent magnets 52L, the first induction magnetic poles 39L, and the first virtual magnetic poles 21L, and the second magnetic field lines G2 are circular. The two second permanent magnets 52R ... adjacent to each other in the circumferential direction so as to connect the two second virtual magnetic poles 21R ... adjacent to each other in the circumferential direction and the second induction magnetic poles 39R ... positioned therebetween. It is generated so as to connect the second induction magnetic poles 39R positioned between the two. As a result, in this state, a magnetic circuit as shown in FIG. In this state, since the first magnetic lines of force G1 are linear, no magnetic force that rotates in the circumferential direction acts on the first induction magnetic poles 39L. Further, the bending degree and the total magnetic flux amount of the two second magnetic lines G2 between each of the two second virtual magnetic poles 21R and the second induction magnetic poles 39R that are adjacent to each other in the circumferential direction are equal to each other, and similarly in the circumferential direction. The bending degree and the total magnetic flux amount of the two second magnetic lines of force G2 between the two adjacent second permanent magnets 52R and the second induction magnetic poles 39R are also equal and balanced. Therefore, no magnetic force that rotates in the circumferential direction acts on the second induction magnetic poles 39R.

  When the virtual permanent magnets 21 are rotated from the position shown in FIG. 16A to the position shown in FIG. 16B, the second virtual magnetic poles 21R, the second induction magnetic poles 39R, and the second permanent magnets 52R are moved. The second magnetic field lines G2 that are connected are generated, and the first magnetic field lines G1 between the first induction magnetic poles 39L and the first virtual magnetic poles 21L are bent. Accordingly, a magnetic circuit as shown in FIG. 18B is configured by the first and second magnetic lines of force G1, G2.

  In this state, although the degree of bending of the first magnetic lines of force G1 is small, the total amount of magnetic flux is large, so that a relatively strong magnetic force acts on the first induction magnetic poles 39L. Accordingly, the first induction magnetic poles 39L are driven with a relatively large driving force in the rotation direction of the virtual permanent magnets 21, that is, the magnetic field rotation direction, and as a result, the outer rotor 13 rotates in the magnetic field rotation direction. Further, although the degree of bending of the second magnetic lines of force G2 is large, the total magnetic flux amount is small, so that a relatively weak magnetic force acts on the second induction magnetic poles 39R, so that the second induction magnetic poles 39R are relatively in the magnetic field rotation direction. Driven with a small driving force, the outer rotor 13 rotates in the direction of magnetic field rotation.

  Next, when the virtual permanent magnet 21 is sequentially rotated from the position shown in FIG. 16B to the positions shown in FIGS. 16C, 16D, 17E, and 17F, the first induction magnetic pole 39L. .. And the second induction magnetic poles 39R are driven in the magnetic field rotation direction by the magnetic force caused by the first and second magnetic lines of force G1, G2, respectively. As a result, the outer rotor 13 rotates in the magnetic field rotation direction. In the meantime, the magnetic force acting on the first induction magnetic poles 39L is gradually weakened by decreasing the total magnetic flux amount although the bending degree of the first magnetic lines of force G1 is large, and the first induction magnetic poles 39L are magnetically rotated. The driving force for driving in the direction gradually decreases. Further, the magnetic force acting on the second induction magnetic poles 39R is gradually increased as the total magnetic flux amount is increased, although the degree of bending of the second magnetic lines G2 is reduced, and the second induction magnetic poles 39R are made to move in the magnetic field rotation direction. The driving force to drive gradually increases.

  And while the virtual permanent magnet 21 rotates from the position shown in FIG. 17 (E) to the position shown in FIG. 17 (F), the second magnetic lines of force G2 are bent and the total magnetic flux amount is close to the maximum. As a result, the strongest magnetic force acts on the second induction magnetic poles 39R ..., and the driving force acting on the second induction magnetic poles 39R ... becomes maximum. Thereafter, as shown in FIG. 17 (G), the virtual permanent magnet 21 is rotated by the pitch P from the initial position of FIG. 16 (A), whereby the first, second virtual magnetic poles 21L,. When 21R rotates to a position opposite to the first and second permanent magnets 52L, 52R, respectively, the state shown in FIG. 16A is reversed from side to side, and the outer rotor 13 is moved in the circumferential direction only at that moment. The rotating magnetic force stops working.

  When the virtual permanent magnet 21 further rotates from this state, the first and second induction magnetic poles 39L, 39R,... Are driven in the magnetic field rotation direction by the magnetic force caused by the first and second magnetic lines of force G1, G2. The rotor 13 rotates in the magnetic field rotation direction. At that time, while the virtual permanent magnet 21 is rotated again to the position shown in FIG. 16A, the magnetic force acting on the first induction magnetic poles 39L,... Reverses the degree of bending of the first magnetic line G1. However, it becomes stronger as the total magnetic flux increases, and the driving force acting on the first induction magnetic poles 39L becomes larger. On the other hand, the magnetic force acting on the second induction magnetic poles 39R ... becomes weaker as the total amount of magnetic flux decreases but the driving force acting on the second induction magnetic poles 39R ... although the degree of bending of the second magnetic lines G2 increases. Becomes smaller.

  16A and FIG. 17G, as the virtual permanent magnet 21 rotates by the pitch P, the first and second induction magnetic poles 39L... 39R. Since it rotates only by the pitch P / 2, the outer rotor 13 rotates at a speed that is 1/2 of the rotational speed of the rotating magnetic field of the first and second stators 12L, 12R. This is because the first and second induction magnetic poles 39L, 39R,... Are connected to the first permanent magnet 52L, which is connected by the first magnetic lines G1, by the action of the magnetic force caused by the first and second magnetic lines G1, G2. This is to rotate while maintaining a state of being located in the middle of the first virtual magnetic pole 21L, and in the middle of the second permanent magnet 52R connected by the second magnetic field line G2 and the second virtual magnetic pole 21R.

  Next, the operation of the electric motor M when the inner rotor 14 is rotated while the outer rotor 13 is fixed will be described with reference to FIGS. 19 and 20.

  First, as shown in FIG. 19A, the first induction magnetic poles 39L are opposed to the first permanent magnets 52L, and the second induction magnetic poles 39R are adjacent to each other two second permanent magnets 52R. .., The first and second rotating magnetic fields are rotated downward in the figure. At the start of the rotation, the polarities of the first virtual magnetic poles 21L ... are made different from the polarities of the first permanent magnets 52L ... facing each other, and the polarities of the second virtual magnetic poles 21R ... The same as the polarity of the two permanent magnets 52R.

  From this state, when the virtual permanent magnets 21 are rotated to the positions shown in FIG. 19B, the first magnetic lines of force G1 between the first induction magnetic poles 39L and the first virtual magnetic poles 21L are bent, and When the second virtual magnetic poles 21R approach the second induction magnetic poles 39R, second magnetic lines of force G2 that connect the second virtual magnetic poles 21R, the second induction magnetic poles 39R, and the second permanent magnets 52R are generated. As a result, in the first and second permanent magnets 52L, 52R, the virtual permanent magnet 21, and the first and second induction magnetic poles 39L, 39R, a magnetic circuit as shown in FIG. Composed.

  In this state, although the total magnetic flux amount of the first magnetic lines G1 between the first permanent magnets 52L and the first induction magnetic poles 39L is high, the first magnetic lines G1 are straight, so the first induction magnetic poles 39L. However, no magnetic force is generated to rotate the first permanent magnets 52L. In addition, since the distance between the second permanent magnets 52R ... and the second virtual magnetic poles 21R ... having different polarities is relatively long, the second magnetic field lines between the second induction magnetic poles 39R ... and the second permanent magnets 52R ... Although the total magnetic flux amount of G2 is relatively small, the bending degree is large, so that a magnetic force is applied to the second permanent magnets 52R... To bring them closer to the second induction magnetic poles 39R. Accordingly, the second permanent magnets 52R are driven together with the first permanent magnets 52L in the rotational direction of the virtual permanent magnets 21, that is, in the direction opposite to the magnetic field rotational direction (upward in FIG. 16), and FIG. Rotate toward the position shown in As a result, the inner rotor 14 rotates in the direction opposite to the magnetic field rotation direction.

  Then, while the first and second permanent magnets 52L, 52R,... Rotate from the position shown in FIG. 19B toward the position shown in FIG. 19C, the virtual permanent magnets 21. Rotate toward the position shown in As described above, when the second permanent magnets 52R approach the second induction magnetic poles 39R ..., the degree of bending of the second magnetic lines G2 between the second induction magnetic poles 39R ... and the second permanent magnets 52R ... becomes small. However, as the virtual permanent magnets 21 further approach the second induction magnetic poles 39R, the total magnetic flux amount of the second magnetic lines of force G2 increases. As a result, in this case as well, a magnetic force is applied to the second permanent magnets 52R... So as to approach the second induction magnetic poles 39R..., Thereby causing the second permanent magnets 52R. .. And the magnetic field rotation direction.

  Further, as the first permanent magnets 52L rotate in the direction opposite to the magnetic field rotation direction, the first permanent magnetic lines G1 between the first permanent magnets 52L ... and the first induction magnetic poles 39L ... A magnetic force is applied to the magnets 52L to bring them close to the first induction magnetic poles 39L. However, in this state, the magnetic force caused by the first magnetic field line G1 is weaker than the magnetic force caused by the second magnetic field line G2 because the degree of bending of the first magnetic field line G1 is smaller than that of the second magnetic field line G2. As a result, the second permanent magnets 52R are driven together with the first permanent magnets 52L in a direction opposite to the magnetic field rotation direction by the magnetic force corresponding to the difference between the two magnetic forces.

  Then, as shown in FIG. 19D, the distance between the first permanent magnets 52L and the first induction magnetic poles 39L and the distance between the second induction magnetic poles 39R and the second permanent magnets 52R. Are substantially equal to each other, the total magnetic flux amount and the degree of bending of the first magnetic field lines G1 between the first permanent magnets 52L and the first induction magnetic poles 39L are the second induction magnetic poles 39R and the second permanent magnets 52R. Are approximately equal to the total amount of magnetic flux and the degree of bending of the second magnetic field lines G2 between them.

  As a result, the first and second permanent magnets 52L, 52R,... Are temporarily not driven when the magnetic forces caused by the first and second magnetic lines G1, G2 are substantially balanced with each other.

  When the virtual permanent magnets 21... Rotate from this state to the position shown in FIG. 20 (E), the generation state of the first magnetic lines of force G1 changes, and a magnetic circuit as shown in FIG. 20 (F) is configured. As a result, the magnetic force caused by the first magnetic field lines G1 hardly acts to bring the first permanent magnets 52L close to the first induction magnetic poles 39L, so that the second permanent magnets are caused by the magnetic force caused by the second magnetic field lines G2. 52R, together with the first permanent magnets 52L, are driven in the direction opposite to the magnetic field rotation direction to the position shown in FIG.

  When the virtual permanent magnets 21 are slightly rotated from the position shown in FIG. 20 (G), the first magnetic lines G1 between the first permanent magnets 52L and the first induction magnetic poles 39L are reversed from the above. The resulting magnetic force acts on the first permanent magnets 52L, so as to be close to the first induction magnetic poles 39L, so that the first permanent magnets 52L ... together with the second permanent magnets 52R ... Driven in the reverse direction, the inner rotor 14 rotates in the direction opposite to the magnetic field rotation direction. When the virtual permanent magnets 21 are further rotated, the magnetic force resulting from the first magnetic field lines G1 between the first permanent magnets 52L and the first induction magnetic poles 39L, the second induction magnetic poles 39R and the second permanent magnets 52R and so on. The first permanent magnets 52L are driven together with the second permanent magnets 52R in a direction opposite to the magnetic field rotation direction by a magnetic force corresponding to a difference in magnetic force caused by the second magnetic field lines G2 between the first permanent magnet 52L and the second permanent magnet 52R. After that, when the magnetic force due to the second magnetic field lines G2 hardly acts so as to bring the second permanent magnets 52R to the second induction magnetic poles 39R, the first permanent magnets 52L are caused by the magnetic force due to the first magnetic field lines G1. Are driven together with the second permanent magnets 52R.

  As described above, with the rotation of the first and second rotating magnetic fields, the magnetic force caused by the first magnetic field lines G1 between the first permanent magnets 52L and the first induction magnetic poles 39L, and the second induction magnetic poles 39R. The magnetic force caused by the second magnetic field line G2 between the first permanent magnets 52R and the second permanent magnets 52R, and the magnetic force corresponding to the difference between these magnetic forces are applied to the first and second permanent magnets 52L, 52R, that is, the inner rotor. 14, the inner rotor 14 rotates in the direction opposite to the magnetic field rotation direction. In addition, when the magnetic force, that is, the driving force acts alternately on the inner rotor 14 as described above, the torque of the inner rotor 14 becomes substantially constant.

  In this case, the inner rotor 14 rotates in reverse at the same speed as the first and second rotating magnetic fields. This is because the first and second induction magnetic poles 39L, 39R,... Are intermediate between the first permanent magnets 52L, and the first virtual magnetic poles 21L, by the action of the magnetic force caused by the first and second magnetic lines of force G1, G2. , And the second permanent magnets 525L,..., 52R... Rotate while maintaining the state of being positioned between the second permanent magnets 52R.

  As described above, the case where the inner rotor 14 is fixed and the outer rotor 13 is rotated in the magnetic field rotation direction and the case where the outer rotor 13 is fixed and the inner rotor 14 is rotated in the direction opposite to the magnetic field rotation direction have been described separately. Of course, both the inner rotor 14 and the outer rotor 13 can be rotated in opposite directions.

  As described above, when rotating either one of the inner rotor 14 and the outer rotor 13 or both the inner rotor 14 and the outer rotor 13, depending on the relative rotational positions of the inner rotor 14 and the outer rotor 13, The magnetization state of the first and second induction magnetic poles 39L, 39R,... Can be changed without causing slippage, and functions as a synchronous machine, so that the efficiency can be increased. Further, the numbers of the first virtual magnetic poles 21L, the first permanent magnets 52L, and the first induction magnetic poles 39L are set to be the same, and the second virtual magnetic poles 21R, the second permanent magnets 52R, and the second induction magnetic poles. 39R... Are set to be equal to each other, so that the torque of the electric motor M can be sufficiently obtained when either the inner rotor 14 or the outer rotor 13 is driven.

  Therefore, according to the electric motor M of the present embodiment, the outer rotor 13 is surrounded by the disk-shaped first and second flange members 32, 33 and the plurality of rod-shaped connecting members 34 that connect them. Since the structure is divided, the processing cost can be greatly reduced as compared with the case where the connecting members 34 are formed integrally with one of the first and second flange members 32 and 33.

  Further, since the first and second flange members 32 and 33 of the outer rotor 13 and the connecting members 34... Connecting them are electrically insulated, the first flange indicated by the arrow in FIG. The closed circuit composed of the member 32, the connecting member 34, the second flange member 33, and the connecting member 34 is interrupted by the insulating portion, and the generation of eddy currents can be suppressed to minimize heat generation and energy loss. In addition, since four places on both ends of the two connecting members 34 and 34 become insulating portions with respect to one closed circuit, even if the insulation at three of the four places is broken, The insulation between the 1 and 2nd flange members 32 and 33 can be ensured, and generation | occurrence | production of an eddy current can be suppressed.

  In particular, since the insulating coatings a and b are formed on both the first and second flange members 32 and 33 and the connecting members 34..., Not only can insulation be ensured even if one of them is damaged, but the bolts 37. Since the insulating film c is also applied to the washers 38, the electrical conduction between the first and second flange members 32, 33 and the connecting members 34 via the bolts 37 can be reliably prevented. .

  Further, as shown in FIG. 9, since the radial thickness T2 of the induction magnetic pole support portion 34c of the connecting member 34 is made thinner than the thickness T1 of the first and second induction magnetic poles 39L and 39R in contact therewith, the connecting member 34 The cross-sectional area of the magnetic flux can be minimized to make it difficult for the magnetic flux to flow, and the generation of eddy current can be suppressed.

  Further, since the first induction magnetic poles 39L and the second induction magnetic poles 39R are arranged in the same direction in the circumferential direction, the first and second induction magnetic poles 39L ..., 39R are arranged in different phases in the circumferential direction. Compared to the case, not only the structure of the rotor body 31 of the outer rotor 13 that supports the first and second induction magnetic poles 39L, 39R,... Is simplified, but also the strength of the rotor body 31 is improved.

  Next, a second embodiment of the present invention will be described with reference to FIG.

  The connecting member 34 of the first embodiment is a solid member, but the connecting member 34 of the second embodiment is hollow by joining, for example, two stainless steel plates that are press-worked together by welding. Configured. With this structure, it is possible to further reduce the weight of the connecting member 34 and further reduce the eddy current by reducing the substantial cross-sectional area thereof.

  Next, a third embodiment of the present invention will be described with reference to FIG.

  In the first embodiment, the first and second flange members 32, 33 and the connecting members 34 are configured as separate members. In the third embodiment, half of the connecting members 34 are the first flange. The other half is formed integrally with the second flange member 33, and the connection member 34 on the first flange member 32 side and the connection member 34 on the second flange member 33 side in the assembled state. Are arranged alternately. In this case, the material of the first and second flange members 32 and 33 is aluminum or an aluminum alloy which is the same weak magnetic material as that of the connecting members 34.

  Also in this third embodiment, the first flange member 32 side connecting member 34... And the second flange member 33 side connecting member 34. By electrically insulating the portion coupled to the same, it is possible to achieve the same effect as the first embodiment.

  Next, a fourth embodiment of the present invention will be described with reference to FIG.

  In the first embodiment, the first and second flange members 32, 33 and the connecting members 34 are configured as separate members. However, all of the connecting members 34 in the fourth embodiment are the first flange. It is formed integrally with the member 32.

  Also in the fourth embodiment, the same effect as that of the first embodiment can be obtained by electrically insulating the portion connecting the connecting members 34 on the first flange member 32 side to the second flange member 33. The effect can be achieved.

  The embodiments of the present invention have been described above, but various design changes can be made without departing from the scope of the present invention.

For example, although the motor M in the embodiment, the present invention can also be applied to a generator to generate an electromotive force in the stator by rotating the other by fixing the one of the outer rotor and the inner rotor.

In the embodiment, the stators 12L and 12R are arranged radially outside and the inner rotor 14 is arranged radially inside. However, the stators 12L and 12R are arranged radially inside and the inner rotor 14 is arranged radially outside. You may arrange in.

  Further, in the embodiment, all of the first flange member 32, the second flange member 33 and the connecting member 34 are provided with an insulating coating, but any of the first flange member 32, the second flange member 33 and the connecting member 34. If one or two of them are provided with an insulating coating, the closed circuit through which the eddy current flows can be interrupted.

  In the embodiment, aluminum or an aluminum alloy is used for the first and second flange members 32, 33 and the connecting member 34 of the outer rotor 13. Instead, titanium, a titanium alloy, stainless steel, or the like is used. Can do.

  Aluminum or aluminum alloy is inexpensive and lightweight, and is easy to process. In addition, it has the feature that it can be easily applied with an insulating coating just by anodizing, but it is easy to flow eddy current because of its low resistance. There's a problem.

  Titanium or titanium alloy has a high resistance value, making it difficult for eddy currents to flow. Further, since the strength is higher than the weight, the outer rotor 13 can be reduced in weight, but the cost of materials and insulation coating is high. There is a problem.

  Since stainless steel has a higher resistance than titanium or titanium alloy, eddy currents are difficult to flow, material costs are relatively low, and processing is relatively easy, but it is heavy and has electrical characteristics. There is a problem that it is unstable (may become a magnetic material by heat treatment or the like) and the cost of the insulating coating is high.

  In the embodiment, the first and second flange members 32, 33 and the connecting members 34 are all insulated from each other. However, the four connecting portions existing in the closed circuit where the vortex flow flows are connected. If at least one of them is insulated, the intended purpose can be achieved.

The front view which looked at the electric motor which concerns on 1st Embodiment in the axial direction (1-1 line arrow view of FIG. 2) 2-2 sectional view of FIG. 3-3 sectional view of FIG. Sectional view along line 4-4 in FIG. View taken along line 5-5 in FIG. 6-6 sectional view of FIG. Sectional view along line 7-7 in FIG. 8-8 sectional view of FIG. Sectional view taken along line 9-9 in FIG. Exploded perspective view of electric motor Disassembled perspective view of inner rotor Perspective view of connecting member and induction pole Spring perspective view Ring perspective view Schematic diagram of electric motor deployed in the circumferential direction Operation explanatory diagram when the inner rotor is fixed (Part 1) Operation explanatory diagram when the inner rotor is fixed (Part 2) Operation explanatory diagram when the inner rotor is fixed (Part 3) Explanatory drawing of operation when outer rotor is fixed (Part 1) Operation explanatory diagram when the outer rotor is fixed (Part 2) The figure corresponding to the said FIG. 9 based on the 2nd Embodiment of this invention. The disassembled perspective view of the outer rotor which concerns on the 3rd Embodiment of this invention The disassembled perspective view of the outer rotor which concerns on the 4th Embodiment of this invention

12L first stator (stator)
12R second stator (stator)
13 outer rotor (first rotor)
14 Inner rotor (second rotor)
21L first electric element (electric element)
21R second electric element (electric element)
32 First flange member 33 Second flange member 34 Connecting member 39L First induction magnetic pole (induction magnetic pole)
39R Second induction magnetic pole (induction magnetic pole)
52L first permanent magnet (permanent magnet)
52R second permanent magnet (permanent magnet)
L axis

Claims (6)

A stator (12L, 12R) having a plurality of electric elements (21L, 21R) arranged in the circumferential direction and a plurality of soft magnetic induction poles (39L, 39R) arranged in the circumferential direction. One rotor (13) and a second rotor (14) having a plurality of permanent magnets (52L, 52R) arranged in the circumferential direction are arranged in order in the radial direction,
The first rotor (13) is made of a conductive material, and is disposed on the common axis (L) so as to be opposed to each other so as to be opposed to each other, the first flange member (32) and the second flange member (33). ) Are connected by a plurality of connecting members (34) which are made of a conductive weak magnetic material and are arranged at predetermined intervals in the circumferential direction around the axis (L), and are adjacent in the circumferential direction. in the connecting member (34) the induction magnetic poles (39L, 39R) rotating electric machine configured to support a while to,
It said first, rotary electric machine, characterized in that electrically isolates the second flange member (32, 33). At the part where the connecting member (34) and the induction magnetic pole (39L, 39R) are in contact, the radial thickness (T1) of the connection member (34) is larger than the radial thickness (T1) of the induction magnetic pole (39L, 39R). characterized in that a smaller T2), rotary electric machines according to claim 1. Characterized in that the connecting member (34) is made of stainless steel, rotary electric machine according to claim 1 or claim 2. The connecting member (34), characterized in that it is made of aluminum or an aluminum alloy, rotary electric machine according to claim 1 or claim 2. The connecting member (34), characterized in that it is made of titanium or titanium alloy, rotary electric machine according to claim 1 or claim 2. The connecting member (34) is characterized in that it is insulated surface, rotary electric machine according to any one of claims 1 to 5.

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