JP4543709B2 - Axial gap rotating electric machine - Google Patents

Description

  The present invention relates to a rotating electrical machine such as a motor and a generator, and more particularly to an axial gap rotating electrical machine in which a disk-shaped rotor and a stator are opposed in the axial direction.

  A so-called axial gap motor in which a stator is disposed opposite to a disk-type rotor with a gap interposed between end faces in the axial direction of the rotor is conventionally known. This motor obtains a rotational driving force by a magnetic force acting between the surfaces of a rotor and a stator opposed in the axial direction. The axial gap motor has an advantage that the axial thickness can be reduced as compared with a so-called radial type motor composed of a conventional cylindrical rotor and an annular stator surrounding the peripheral surface thereof.

The types of axial gap motors known in the art include a reluctance type in which salient poles are formed by magnetic members on the end face of the rotor facing the stator, and the rotor in the axial direction corresponding to the rotational drive magnetic pole of the stator. There is a permanent magnet type in which permanent magnets are arranged with the magnetic poles facing. Patent Document 1 discloses an example in which a thin double rotor type motor symmetrical in the axial direction is configured with one stator and a pair of rotors sandwiching the stator based on such a permanent magnet type.
JP 9-327163 A

  By the way, the applicant has created a rotating electrical machine composed of a combination of a reluctance type and a permanent magnet type different from the previously known type. The rotating electrical machine according to this idea has a configuration in which iron cores and permanent magnets are alternately arranged on one surface of a rotor in the circumferential direction, and the permanent magnets are arranged with their magnetized surfaces (magnetic poles) facing the rotor circumferential direction. Is taken. According to this, as a motor, reluctance torque and permanent magnet torque can be generated on one surface of the rotor. Therefore, according to this configuration, compared to the configuration described in Patent Document 1 (hereinafter referred to as the conventional example), it is possible to increase the torque that can be generated on one rotor surface, which is higher than the axial gap motor of the conventional example. Can be realized.

  In order to further develop this idea and increase the torque, when a double rotor type rotating electrical machine is configured as in the prior art, the rotor is rotated by the magnetic force acting between the stator and the rotor as a motor. Although driven, if the gap length between the stator and the rotor varies, the motor performance varies. Also, if there are many parts that define the gap between the stator and the rotor, the dimensional tolerance of the gap length will increase due to the dimensional error during manufacture of each component and the assembly error during assembly. . In particular, in the axial gap motor, the length of the shaft that supports the rotor is short, and the accuracy of the shaft support has a relatively large effect on the surface shake of the rotor. Therefore, it is desirable to make the component tolerance as small as possible.

  An object of the present invention is to set a gap between a rotor and a stator with high accuracy in a double rotor type axial gap rotating electrical machine capable of outputting a high torque. Furthermore, the present invention has a further object to set the air gap with high accuracy in the rotating electrical machine that further increases the torque by directing the direction of the magnetic pole of the permanent magnet in the circumferential direction of the rotor. To do.

In order to achieve the above object, the present invention provides a case (3) composed of at least two parts (3A, 3B), a rotary shaft (10) rotatably supported by the case, and the rotary shaft. And a pair of rotors (1A, 1B) in which a permanent magnet (11) and an iron core (12) are arranged, and a stator (2) arranged in a fixed manner between the rotors. In the axial gap rotating electrical machine in which a gap is maintained between the rotor and the stator, the permanent magnets are arranged in the rotor circumferential direction alternately with the iron core with the magnetic poles directed in the rotor circumferential direction. The rotor has spacing holding means (13a) for supporting the iron core and abutting against each other in order to maintain the mutual spacing in the axial direction, and holds a gap between the rotor and the stator. Therefore, either the stator or the rotor is in the axial direction position. Sei via means (4) is mainly characterized in that abuts against the casing.
In the above-mentioned configuration, the rotor is supported by the rotating shaft via a support member (13) that supports a permanent magnet and an iron core, and the interval holding means is formed integrally with the support member. And
In any one of the above-described configurations, it is preferable that the interval holding unit is formed in a hub portion that supports the rotor around the outer periphery of the rotary shaft and extends in an axial direction.
Further, the position adjusting means is configured by a shim interposed between the rotor and one part (3A) of the case, and rotates between the rotor and the other part (3B) of the case. It is desirable that the elastic biasing means (5) for pressing the child against the shim is arranged.
In any one of the configurations described above, the position adjusting means is configured by a shim interposed between the stator and one part of the case, and rotates between the rotor and the other part of the case. An elastic biasing means for pressing the child against one part of the case may be arranged.
Alternatively, the position adjusting means is configured by a shim interposed between the stator or the rotor and one part of the case, and the rotation shaft is in contact with one (1A) of the rotor. It has positioning means (10a), the rotor is pressed against the positioning means by fastening means (7B) on the rotating shaft, and the rotating shaft is fixed to one part of the case in an axially stationary manner. You can also.

  According to the axial gap rotating electrical machine of the present invention, the pair of rotors are in contact with each other by the distance holding means and are fitted to the rotating shaft, so that the distance between the rotors is set without any special adjustment. The And since other members do not interpose by making it contact directly in this way, accumulation of the dimensional tolerance of a component and assembly tolerance can be minimized. Further, the positional relationship between the rotor and the stator is determined by positioning either the rotor or the stator in one part of the case via the axial position adjusting means. By the selection, the position of the stator with respect to the pair of rotors that are set apart from each other is adjusted. Thereby, the gap length can be adjusted with high accuracy.

  In the rotor support member according to the present invention, it is desirable that the part for attaching the permanent magnet and the iron core and the part fitted to the rotating shaft be an integral part. According to this configuration, since the parts between the rotating shaft and the permanent magnet and the iron core fixed to the rotor can be a single member, dimensional tolerance is minimized, the surface of the stator, The precision of the space | gap between the surfaces of the rotor which faces it can be improved.

  Moreover, it is desirable to make the fitting part with the rotating shaft of both rotor support members the length over the whole area of the rotation axis direction space | interval of both rotors. According to this configuration, the inclination (blur) tolerance of the rotor with respect to the rotating shaft can be minimized by ensuring the maximum length of the rotating shaft fitting portion of the rotor while suppressing the overall length of the rotating electrical machine.

  Further, regarding the fixing of the rotating shaft, it is desirable to fix the rotating shaft to the case using only one side bearing using a bearing fitting prevention member such as a presser fitting and a tightening nut. If it does in this way, positioning of a rotor will be attained, without using elastic urging means, such as a disc spring and a wave washer.

  Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 show a first embodiment. FIG. 1 shows a cross section of a rotating electrical machine, and FIG. 2 schematically shows a rotor and a stator, with their support members omitted, and a part thereof disassembled and shown in a perspective state. In this embodiment, the position adjusting means 4 is constituted by a shim interposed between the rotor 1A and one part 3A of the case 3, that is, a spacer that is appropriately selected in thickness and interposed between the members. In this example, elastic urging means 5 for pressing the rotors 3A and 3B against the shim 4 is disposed between the child 1B and the other part 3B of the case 3.

  As shown in FIG. 1, a double rotor type axial gap rotating electrical machine in this example includes a case 3 having a combined structure composed of two parts 3A and 3B, and a rotary shaft 10 rotatably supported by the case. A pair of rotors 1A and 1B, which are fixedly supported by the rotation shaft and have a permanent magnet 11 and an iron core 12 attached thereto, are fixed to the case 3 between the rotors, and a plurality of iron cores are arranged in the circumferential direction. A stator 2 having a coil 22 containing 21 is provided, and a gap is held between the opposing end faces of the rotors 1A and 1B and the opposite end faces of the stator 2.

  Referring also to FIG. 2, the permanent magnet 11 has a rectangular cross-section in this example, and alternates with the iron core 12 with the direction of the magnetic pole directed in the circumferential direction of the rotor (perpendicular to the paper surface in FIG. 1). Are arranged in the circumferential direction of the rotor. The rotors 1 </ b> A and 1 </ b> B have interval holding means 13 a that abut against each other in order to maintain an interval in the axial direction. In this example, the rotors 1 </ b> A and 1 </ b> B are in contact with the case 3 via the axial position adjusting means 4 in order to maintain a gap between the rotors 1 </ b> A and 1 </ b> B and the stator 2.

  Further, the detailed configuration will be described for each part. One case portion 3A has an attachment portion 31 that protrudes from the peripheral wall in the inner diameter direction and has an attachment reference surface for fixing the stator 2, and also has a cylindrical shape that protrudes into the case on the inner side in the radial direction of the end wall. A bearing housing portion 32 is provided. The other case portion 3B covers the open end side of the case portion 3A, and has a cylindrical bearing housing portion 33 that projects into the case on the radially inner side of the end wall.

  The stator 2 has a structure in which a large number of coils 22 wound around a substantially fan-shaped iron core 21 as viewed in the axial direction are arranged in the circumferential direction and attached to and supported by a plate-like support member 23. Yes. The support member 23 has a plurality of bolt through holes on its outer peripheral side, and is fixedly attached to the attachment portion 31 of one case 3A by bolting.

  The pair of rotors 1 </ b> A and 1 </ b> B has a support member 13 made of a nonmagnetic material having a hub portion 13 a extending in the axial direction on the inner diameter side of the disk portion, and an axial view formed on the disk portion of the support member 13. It is composed of permanent magnets 11 embedded in a large number of recesses extending in the radial direction, and iron cores 12 embedded in a number of fan-shaped through-holes formed alternately in the disk portion and in the circumferential direction in the same axial direction. ing. The axial length of the two hub portions 13a together is such that a predetermined gap is generated between the opposing end surface of the embedded rotor core 12 and the opposite end surface of the stator core 21. Therefore, the hub portion 13a constitutes a gap holding means for the two rotors 1A and 1B.

  The rotating shaft 10 that supports the pair of rotors 1A and 1B is a shaft in which the peripheral surface portion into which the hub portion 13a of the sleeve-shaped support member 13 fits is slightly larger in diameter than the bearing support portion to the case 3. The length in the axial direction of the large-diameter shaft portion is set slightly shorter than the total length of the two hub portions 13a in the axial direction. Although not shown, the outer peripheral surface of the large-diameter shaft portion is provided with a detent means such as a spline, and the anti-rotation means such as a spline formed on the inner peripheral surface of the hub portion 13a. Due to the engagement, the rotors 1A and 1B and the rotating shaft 10 can transmit torque without rotating relative to each other.

  The rotating shaft 10 is supported by the case 3 via a pair of angular ball bearings 6A and 6B. A shim 4 as a means for adjusting and setting the axial position of the rotor 1 is provided between the outer race of the bearing 6A disposed in the bearing housing portion 32 of the one case portion 3A and the end wall of the case portion 3A. It is inserted. Further, between the outer race of the bearing 6B disposed in the bearing housing portion 33 of the other case portion 3B and the end wall, a spring 5 is provided as means for elastically urging the rotor 1 in the shim 4 direction via the bearing 6B. Is inserted. The spring 5 is shown as a disc spring type, but may be a wave washer type having a constant waveform in the circumferential direction so as to generate a uniform load in the circumferential direction.

  Next, a procedure for assembling the rotating electrical machine having the above configuration will be described. First, the shim 4 having a selected thickness is fitted and disposed in the bearing accommodating portion 32 of the one case portion 3A having an open end surface. Next, the rotating shaft 10 in which the one rotor 1A and the bearing 6A are fitted around the shaft is assembled in the case 3A. The bearing 6A can be assembled prior to the assembly of the rotary shaft 10. As a result, the outer race of the bearing 6A comes into contact with the end wall of the case portion 3A through the shim 4, and one rotor 1A has the outer end face of the hub portion 13a of the support member 13 in contact with the inner race of the bearing 6A. The case portion 3A is positioned via a shim 4 and a bearing 6A.

  Next, the stator 2 in which the coil 22 containing the iron core 21 is assembled in advance to the support member 23 is assembled in the case portion 3A, and the support member 23 is fixed to the attachment portion 31 of the case portion 3A by bolting. As a result, the stator 2 is directly positioned on the reference surface of the mounting portion 31 with respect to the case portion 3A.

  Next, the other rotor 1 </ b> B is inserted into the rotating shaft 10. As a result, the hub portions 13a of the support members 13 of the two rotors 1A and 1B come into contact with each other, and the positions of the rotors 1A and 1B with respect to the case portion 3A are determined.

  Further, the other bearing 6B is fitted into the rotary shaft 10, and the other case 3B is covered with the spring 5 attached to the end face of the bearing 6B. Finally, assembly is completed by fastening and fixing the other case 3B to one case 3A by bolting or the like. Thereby, the load of the spring 5 compressed between the bearing 6B and the case portion 3B is applied to the outer race, the bearing ball, the inner race of the bearing 6B, the support member 13 of the other rotor 1B, and the support member of one rotor. 13, it is transmitted to one case 3A via the inner race, bearing ball, outer race, and shim 4 of the bearing 6A, so that the rotors 1A and 1B are prevented from floating in the axial direction. In this embodiment, the axial length of the large-diameter shaft portion of the rotating shaft 10 is made shorter than the shaft length of the hub portion 13a of the both support members 13 because the axial movement of the bearing 6B due to the load of the spring 5 is reduced. This is to allow.

  In this embodiment, the stator 2 is positioned with respect to the reference surface of the case 3, and the rotors 1 </ b> A and 1 </ b> B are positioned relative to each other by the contact of the hub portion 13 a, and the thickness of the shim 4 is By the adjustment, it is positioned with respect to the stator 2 through the case 3 in a spring load state.

  As described in detail above, according to the first embodiment, the pair of rotors 1A and 1B are in contact with each other at the hub portion 13a of the support member 13 and are fitted to the rotary shaft 10, so that the rotor The distance between is automatically set without any special adjustment. In addition, the hub portion 13a that sets the interval between the two rotors 1A and 1B is a length that extends over the entire length between the bearings 6A and 6B by fitting to the outer peripheral surface of the rotary shaft 10, and therefore the surface blur of the rotor. Is also minimized.

Further, by directly abutting the support member 13 in this way, since no other members are interposed, the accumulation of the dimensional tolerance of the component parts and the assembly tolerance can be minimized. Further, since both the rotors 1A and 1B having the relative positions set as described above are positioned on one portion 3A of the case 3 via the shim 4, the stator 2 fixed directly to the case portion 3A On the other hand, by adjusting the position by selecting the shim 4, the gap length between the rotors 1A and 1B and the stator 2 can be adjusted with high accuracy.
In the present embodiment, the shim 4 is disposed between the outer race of the bearing 6A and the case portion 3A. However, the shim 4 is disposed between the inner race of the bearing 6A and the support member 13a of the rotor 1A. However, the same effect can be obtained.

  In the second embodiment shown in FIG. 3, the rotors 1 </ b> A and 1 </ b> B are directly positioned with respect to the case 3 and the stator 2 is adjusted with respect to the case 3, contrary to the first embodiment. It is an example. Also in this example, all the constituent elements constituting the rotating electrical machine are the same as those in the first embodiment. Therefore, the description of each constituent element is given the same reference numeral to the corresponding element, and the following arrangement is used instead. Only the differences and the assembly procedure will be described.

  In this example, the shim 4 is interposed between the support member 23 of the stator 2 and the attachment portion 31 of the one case portion 3A. Further, the spring 4 is interposed between the other rotor 1B and the inner race of the other bearing 6B.

  As for the assembling procedure of this example, first, the rotating shaft 10 in which the one rotor 1A and the bearing 6A are fitted to the shaft periphery is assembled in the bearing accommodating portion 32 of the one case portion 3A whose end face is open. In this case, the bearing 6A may be a separate set. Thereby, one rotor 1A is positioned via the ring 6A with respect to the case part 3A.

  Next, the shim 4 of which thickness is selected is disposed along the mounting surface of the mounting portion 31 of the case portion 3A, and the stator 2 in which the coil 22 containing the iron core 21 is assembled in advance to the support member 23 is assembled in the case portion 3A. The support member 23 is fixed to the attachment portion 31 of the case portion 3A by bolting. Thus, the stator 2 is positioned via the shim 4 with respect to the case portion 3A.

  Next, the other rotor 1 </ b> B is inserted into the rotating shaft 10. As a result, the hub portions 13a of the support members 13 of the two rotors 1A and 1B come into contact with each other, and the positions of the rotors 1A and 1B with respect to the case portion 3A are determined.

  Further, the spring 5 and the bearing 6B are fitted into the rotating shaft 10 in that order, and the other case portion 3B is covered. Finally, the assembly is completed by fastening and fixing the other case portion 3B to the one case portion 3A by bolting or the like. As a result, the load of the spring 5 compressed between the bearing 6B and the rotor 1B passes through the inner race, the bearing ball, the outer race, the other case portion 3B, and the fastening bolt on one side of the bearing 6B. Is transmitted to one case portion 3A via the support member 13 of the other rotor 1B, the support member 13 of one rotor 1A, the inner race of the bearing 6A, the bearing ball and the outer race. 1A and 1B are prevented from floating in the axial direction.

  In this embodiment, the rotors 1 </ b> A and 1 </ b> B are positioned relative to the case 3 in a spring-loaded state in a state where the rotors 1 </ b> A and 1 </ b> B are positioned relative to each other by the contact of the hub portion 13 a. By adjusting the height, positioning is performed with respect to the rotors 1A and 1B.

  Also in the structure of the second embodiment, the distance between the rotors 1A and 1B is set without any special adjustment, the surface blurring of the rotor is minimized, and the direct contact makes it possible. Since the members are not interposed, the accumulation of the dimensional tolerances of the component parts and the assembly tolerance can be minimized. However, in the second embodiment, the two rotors 1A and 1B having the relative positions set are directly positioned on the case portion 3A, and the position of the stator 2 is adjusted by the selection of the shim 4 on the other hand. The difference is that the gap length between the rotors 1A and 1B and the stator 2 can be adjusted with high accuracy.

  As can be seen from the comparison between the first embodiment and the second embodiment, the spring 5 serves to press the rotors 1A and 1B against the case portion 3A. Therefore, the arrangement position of the spring in the first embodiment and the arrangement position of the spring in the second embodiment can be arranged in a mutually interchanged relationship. That is, in the first embodiment, the spring 5 may be disposed between the support member 13 and the bearing 6B, and in the second embodiment, the spring 5 may be disposed between the bearing 6B and the case portion 3B.

  Next, in the third embodiment shown in FIG. 4, the configuration for adjusting the position of the stator 2 with respect to the case 3 is the same as that in the second embodiment, but the positioning configuration of the rotors 1A and 1B is the same as the previous configuration. Unlike the two examples, a configuration is adopted in which the rotors 1A and 1B are positioned with respect to the rotating shaft 10 and fixed and positioned on the case 3 through the rotating shaft 10 so as not to move along the axis. In this example as well, all the components constituting the rotating electrical machine are the same as those in the first embodiment and the second embodiment except for the positioning means. Therefore, the description of each component is the same as the corresponding component. Instead of description with reference numerals, only the positioning means and their arrangement relationship and the assembly procedure will be described below.

  In this example, the configuration of the rotating shaft 10 is changed from the previous embodiment. The rotary shaft 10 includes a collar 10a at one end of the large-diameter shaft portion. The collar 10a is for positioning the inner race of the bearing 6A in contact with one end face thereof and the support member 13 of the rotor 1A in contact with the other end face thereof. The rotary shaft 10 further includes a screw portion 10b for tightening the nut outside the bearing fitting portion. Further, a screw hole for fastening the bolt is formed in the end wall of the one case portion 3A, and a presser fitting 8 for fixing the outer race of the one bearing 6A to the case 3A is bolted and fixed to the screw hole. It is said that.

  As can be seen with reference to FIG. 4, in this example, the case portion 3 </ b> B has no end wall covering the outside of the bearing accommodating portion 33, but this supports the pressing force particularly on the case portion 3 </ b> B. This is excluded from the necessity and does not have a special technical meaning with respect to the first and second embodiments.

  The assembly procedure of this example is as follows. First, the bearing 6A is fitted into the bearing accommodating portion 32 of the one case portion 3A with the end face open, and the outer race is pushed against the end wall of the case portion 3A by tightening the bolts of the presser fitting 8. By attaching, the bearing 6A is secured to the case 3A. Next, the rotating shaft 10 in which one rotor 1A is fitted around the shaft is inserted into the inner race of the bearing 6A and assembled. Thus, one rotor 1A is positioned with respect to the case portion 3A via the collar 10a of the rotary shaft 10 and the bearing 6A.

  Next, the shim 4 of which thickness is selected is disposed along the mounting surface of the mounting portion 31 of the case portion 3A, and the stator 2 in which the coil 22 containing the iron core 21 is assembled in advance to the support member 23 is assembled in the case portion 3A. The support member 23 is fixed to the case 3A by bolting. Thus, the stator 2 is positioned via the shim 4 with respect to the case portion 3A.

  Next, the other rotor 1 </ b> B is inserted into the rotating shaft 10. As a result, the hub portions 13a of the support members 13 of the two rotors 1A and 1B come into contact with each other, and the positions of the rotors 1A and 1B with respect to the case portion 3A are determined.

  Further, the bearing 6B is fitted into the rotating shaft 10, and the other case portion 3B is covered. Then, the other case portion 3B is fastened and fixed to the one case portion 3A by bolting or the like. Thereafter, the nuts 7A and 7B are fastened to both screw portions of the rotary shaft 10 to complete the assembly. Thereby, the rotating shaft 10 is fixed to an axial direction with respect to one case part 3A via the bearing 6A. Further, by tightening the other nut 7B, the support member 13 of the other rotor 1B is pressed against the collar 10a via the support member 13 of the one rotor 1B, so that both the rotors 1A, 1B and the other The bearing 6 </ b> B is fixed to the rotation shaft 10 so as not to move in the axial direction.

  In this embodiment, the rotors 1A and 1B are rotated in a state where one end side is restrained by the collar 10a and the other end side is restrained by the inner race of the bearing 6B and is relatively positioned relative to the rotating shaft 10. The bearing 6 </ b> A in which the outer race is fixedly fixed to the shaft 10 is fixedly fixed to the one case portion 3 </ b> A and is positioned with respect to the case 3. On the other hand, the stator 2 is positioned with respect to the rotors 1A and 1B by adjusting the thickness of the shim 4.

Even in the structure of the third embodiment, the distance between the rotors 1A and 1B is set without any special adjustment, the surface blurring of the rotor is minimized, and the direct contact makes it possible. Since the members are not interposed, the accumulation of the dimensional tolerances of the component parts and the assembly tolerance can be minimized. However, in the third embodiment, the two rotors 1A and 1B whose relative positions are set as described above are brought into contact with the rotation shaft by the contact of the rotation shaft 10 positioned with respect to the case portion 3A to the collar 10a. As a result, it is positioned with respect to the case portion 3A, and the position of the stator 2 is adjusted by selecting the shim 4 in contrast. However, the point that the space | gap length between rotor 1A, 1B and the stator 2 can be adjusted with high precision is the same.
In this embodiment, the shim 4 is disposed between the case portion 3A and the stator support member 23. However, the shim 4 is disposed between the outer race of the bearing 6A and the case portion 3A, or the inner portion of the bearing 6A. The same effect can be obtained even if it is arranged between the race and the collar 10a of the rotating shaft.

  The present invention can be applied to a motor, a generator, or a motor generator for any application. However, in particular, an application in which the axial direction dimension of a rotating electrical machine is severely restricted, for example, a wheel motor built in a wheel in an electric vehicle, The present invention is particularly effective when used for a motor or a generator disposed on the same axis or parallel axis as the engine in the hybrid vehicle drive device.

It is sectional drawing which shows Example 1 of the axial gap rotary electric machine which concerns on application of this invention. It is a perspective view which shows typically the structure of the rotor of a rotary electric machine of Example 1, and a stator. 6 is a cross-sectional view showing a configuration of Example 2. FIG. 6 is a cross-sectional view showing a configuration of Example 3. FIG.

Explanation of symbols

1A, 1B Rotor 2 Stator 3 Case 3A, 3B Case part 4 Shim (Position adjusting means)
5 Spring (elastic biasing means)
7A, 7B Nut (fastening means)
10 Rotating shaft 10a Color (Positioning means)
11 Permanent magnet 12 Iron core 13 Support member

Claims (6)

A case (3) composed of at least two parts (3A, 3B), a rotating shaft (10) rotatably supported by the case, a detent supported by the rotating shaft, and a permanent magnet (11); A pair of rotors (1A, 1B) in which an iron core (12) is disposed, and a stator (2) that is disposed between the rotors and fixed to a case are provided, and a gap is formed between the rotors and the stators. In the held axial gap rotating electrical machine,
The permanent magnet is arranged in the rotor circumferential direction alternately with the iron core with the direction of the magnetic pole in the rotor circumferential direction,
The rotor has interval holding means (13a) that supports the iron core and abuts against each other in order to maintain a mutual axial interval.
Axial gap rotation, wherein either one of the stator and the rotor contacts the case via the axial position adjusting means (4) so as to maintain a gap between the rotor and the stator. Electric . Before SL rotor is supported by the rotary shaft via a support member (13) for supporting the permanent magnet and the iron core,
The interval holding means is characterized in that it is formed integrally with the support member, the axial gap rotary electric machine of claim 1 Symbol placement. 3. The axial gap according to claim 1, wherein the gap holding unit is formed in a hub portion that supports the rotor around the outer periphery of the rotating shaft and extends in an axial direction. 4. Rotating electric machine. The position adjusting means is constituted by a shim interposed between the rotor and one part (3A) of the case,
Between the other part of the rotor and the casing (3B), and an elastic biasing means which presses the rotor shim (5) is disposed, any one of claims 1 to 3 The described axial gap rotating electrical machine. The position adjusting means is constituted by a shim interposed between the stator and one part of the case,
Between the other portions of the rotor and casing, the resilient biasing means which presses the rotor in one part of the case, characterized in that are arranged, according to any one of claims 1 to 3 Axial gap rotating electric machine. The position adjusting means comprises a shim interposed between the stator or the rotor and one part of the case,
The rotating shaft has positioning means (10a) that contacts one of the rotors (1A),
The rotor is pressed against the positioning means by the fastening means (7B) on the rotating shaft,
The axial gap rotating electrical machine according to any one of claims 1 to 3 , wherein the rotating shaft is fixed to one part of the case so as not to move in the axial direction.

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