JP6137019B2 - Axial gap type rotating electrical machine - Google Patents

Description

  The present invention relates to an axial gap type rotating electrical machine (motor, generator, or motor / generator).

  For example, as disclosed in Patent Document 1, an stator having a structure in which a stator and a rotor are arranged so as to face each other in the rotor axial direction through an air gap, and the stator and the rotor are accommodated in a hollow cylindrical housing. Gap type rotating electrical machines are known.

  In this axial gap type rotating electrical machine, the rotor is arranged such that a plurality of permanent magnets are arranged at regular intervals around the rotor central axis on one side of a rotor disk (rotor core) made of an electromagnetic steel plate or the like that also serves as a back yoke. It has a structure that is bonded and fixed with.

JP 2010-246171 A

  However, in the conventional rotor in which the permanent magnet is simply bonded to one side of the rotor disk as described above, the fixing strength of the permanent magnet with respect to the rotor disk is naturally limited, and the axial which can sufficiently withstand high rotation speed and high torque. It is difficult to provide a gap-type rotating electrical machine.

  The present invention has been made in view of the above circumstances, and an object thereof is to provide an axial gap type rotating electrical machine that can withstand a higher rotational speed and higher torque with a simple structure.

In order to solve the above-described problems, the present invention provides a rotor including a rotating shaft and a rotor body that rotates together with the rotating shaft, and a stator that is disposed in the axial direction of the rotating shaft so as to face the rotor body. In the axial gap type rotating electric machine provided, the rotor main body includes a rotor main member including a disk-shaped rotor core and a plurality of permanent magnets fixed in a circumferential direction on a stator facing surface of the rotor core, and the rotor main member. And clamping members that sandwich the member from both sides in the axial direction at the positions of both end portions of each permanent magnet in the circumferential direction .

  According to the structure of this axial gap type rotating electrical machine, since the permanent magnet and the rotor core are sandwiched by the clamp members from both sides in the axial direction of the rotating shaft, the permanent magnet is pressed to the rotor core side. The fixing strength of is increased. Therefore, the durability at a high rotational speed and high torque can be improved with a simple structure.

  More specifically, the clamp member includes a pair of arm portions extending in the radial direction of the rotor main member at positions on both sides of the rotor main member in the axial direction, and the pair of arms at a position radially outside the rotor main member. A connecting portion for connecting the arm portions to each other.

  According to this structure, it is possible to increase the fixing strength of the permanent magnet with a simple structure in which the permanent magnet is pressed to the rotor core side by each arm portion of the clamp member.

  In this case, it includes a fixing member that sandwiches the rotor main member from both sides in the axial direction and fixes it to the rotating shaft, and each arm portion of the clamp member is pressed from the outer side in the axial direction to the permanent magnet side by the fixing member. Is preferred.

  According to this structure, each arm portion is prevented from being lifted with the rotation of the rotor, so that the permanent magnet can be more reliably pressed to the rotor core side.

  Each of the pair of arm portions includes a flange portion extending in the opposite direction along the rotation shaft at each end on the rotation shaft side, and the fixing member is a restraint for restraining the flange portion from the radially outer side. It is suitable to have a part.

  According to this structure, it is possible to prevent the clamp member from being displaced in the radial direction due to the centrifugal force accompanying the rotation of the rotor and falling off the rotor main member.

  The rotor main member includes an inner cylinder member that is located at the center of the rotor main member and is externally fitted to the rotation shaft; and an outer cylinder member that is externally fitted to the rotor core, and the inner cylinder member and the outer cylinder member It is preferable that a positioning portion for positioning each clamp member in the circumferential direction is formed.

  According to this structure, it is possible to prevent the clamp member from being displaced in the circumferential direction with the rotation of the rotor and falling off from the rotor main member.

  Moreover, it is preferable that each arm part of the said clamp member is what integrally presses the permanent magnet adjacent to the circumferential direction in the position of these circumferential direction edge parts.

  According to this structure, it becomes possible to hold down the permanent magnet stably without hindering the magnetic action of the permanent magnet by the clamp member. In addition, since the adjacent permanent magnets are sandwiched between the common clamp member bodies, a rational configuration is obtained.

  In this case, the rotor body includes a plurality of coolant passages formed by a pair of permanent magnets adjacent to each other in the circumferential direction, the arm portion of the clamp member, and the rotor core and extending in the radial direction, It is preferable that the rotating shaft includes a cooling liquid introduction / extraction passage communicating with each of the cooling liquid passages.

  According to this structure, the coolant can be supplied to the rotor main member through the rotating shaft. Therefore, it is possible to suppress a decrease in motor efficiency due to the heat generated by the rotor.

  The rotor main member may be one in which the plurality of permanent magnets are fixed to one side of the rotor core in the axial direction, or the plurality of permanent magnets may be provided on both sides of the rotor core in the axial direction. It may be fixed.

  In any case, according to the above configuration, the fixing strength of the permanent magnet to the rotor core can be effectively increased, thereby improving the durability of the rotor at a high rotational speed and high torque with a simple structure. Can do.

  The rotor main member may be one in which the plurality of permanent magnets are fixed only on one side of the rotor core in the axial direction and a reinforcing member made of a non-magnetic material is fixed on the other side.

  According to this structure, in a rotor of a type in which a permanent magnet is fixed only on one side of the rotor core, it is possible to improve the rigidity of the entire rotor while increasing the fixing strength of the permanent magnet.

  On the other hand, another rotating electrical machine of the present invention is an axial including a rotor including a rotating shaft and a rotor main body that rotates together with the rotating shaft, and a stator that is disposed to face the rotor main body in the axial direction of the rotating shaft. In the gap-type rotating electrical machine, the rotor body is located at the center of the inner cylinder member that is externally fitted to the rotation shaft, the outer cylinder member that is provided on the outer side, and between the inner cylinder member and the outer cylinder member. A rotor main member including a plurality of permanent magnets arranged and arranged in the circumferential direction, and a clamp member that sandwiches the rotor main member from both sides in the axial direction at the positions of both end portions of the permanent magnets in the circumferential direction.

  According to such a structure, it is possible to simplify the structure while improving the durability of the rotor to some extent.

  As described above, according to the axial gap type rotating electrical machine of the present invention, durability at a high rotational speed and high torque can be improved with a simple structure.

It is a disassembled perspective view which shows the axial gap type rotary electric machine which concerns on 1st Embodiment of this invention. It is a top view (partial sectional view) showing a rotor. It is sectional drawing (III-III sectional view taken on the line in FIG. 2) which shows a rotor. It is sectional drawing (IV-IV sectional view taken on the line in FIG. 2) which shows a rotor. It is principal part sectional drawing of a rotor (VV sectional view taken on the line in FIG. 2). It is a top view which shows a permanent magnet. It is a side view which shows a clamp member main body. It is a top view which shows an outer cylinder member. It is a side view which shows an outer cylinder member. It is sectional drawing (XX sectional drawing of FIG. 9) which shows an outer cylinder member. It is a top view which shows an inner cylinder member. It is a side view which shows an inner cylinder member. It is a top view (partial sectional view) showing a rotor of an axial gap type rotating electrical machine according to a second embodiment. It is sectional drawing which shows a rotor. It is principal part sectional drawing (XV-XV sectional view taken on the line of FIG. 13) of a rotor. It is side views, such as a rotating shaft which show the relationship between the guide path of the cooling water of a rotating shaft, and an inner cylinder member. It is sectional drawing which shows the modification of a rotor.

  Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

(First embodiment)
FIG. 1 is an exploded perspective view of a rotating electrical machine 1A according to the first embodiment of the present invention. A rotating electrical machine 1A shown in the figure is located on both sides of a rotor 2 having a rotating shaft 20 as a center and a rotor body 22 to be described later of the rotor 2, and has a predetermined interval in the axial direction of the rotating shaft 20 with respect to the rotor body 22. This is a so-called one-rotor two-stator axial gap type rotating electrical machine including two stators 4 facing each other and a cylindrical housing 6 in which the rotor 2 and the stator 4 are accommodated. In the following description, the direction parallel to the rotation shaft 20 is referred to as “axial direction”, the direction orthogonal to the rotation shaft 20 is referred to as “radial direction”, and the rotation direction of the rotation shaft 20 (rotor 2) is referred to as “circumferential direction”. .

  As shown in the figure, the stator 4 is fixed on the back yoke 12 in a state of being arranged in the circumferential direction and a back yoke 12 formed by laminating and integrating a plurality of disc-shaped electromagnetic steel plates. A plurality of stator cores 10, coils 11 attached to (wound around) each stator core 10, and an end plate 14 fixed to a lower portion of the back yoke 12. The two stators 4 have the same configuration except that they are upside down.

  Each stator 4 is inserted into the inside of the cylindrical housing 6 from both sides so that the stator cores 10 face each other, and is fixed to the housing 6 via each end plate 14.

  On the other hand, the rotor 2 is fixed to the rotary shaft 20 in a state in which the rotor main body 22 is sandwiched from both the upper and lower sides (axial direction), the disc-shaped rotor main body 22, the rotary shaft 20 penetrating the center of the rotor main body 22 And a fixing member.

  The rotor 2 is disposed in the housing 6 so that the rotor body 22 is interposed between the stators 4, and the rotating shaft 20 is inserted into the bearings 16 held by the end plates 14 of the stators 4. The two stators 4 are rotatably supported.

  As shown in FIGS. 2 to 4, the rotor main body 22 includes a rotor main member 24 and clamp members 32 that sandwich the rotor main member 24 from both sides in the axial direction.

  The rotor main member 24 includes a rotor core 25 formed in a substantially disk shape by winding a strip-shaped electromagnetic steel sheet in a spiral shape, and a stator facing surface of the rotor core 25 (upper and lower surfaces in FIGS. 3 and 4). A plurality of permanent magnets 26 fixed to the rotor core 25, an inner cylinder member 27 provided at the center of the rotor core 25 and fitted on the rotary shaft 20, and an outer cylinder member 28 fitted on the rotor core 25. It is out. The inner cylinder member 27 and the outer cylinder member 28 are formed of a nonmagnetic material (austenitic stainless steel, aluminum, etc.).

  The permanent magnets 26 are substantially fan-shaped in plan view as shown in FIG. 6 and are arranged on the upper and lower surfaces of the rotor core 25 so as to be aligned in the circumferential direction along the outer peripheral surface of the inner cylinder member 27. It is fixed on each side. In this example, eight permanent magnets 26 are fixed to the upper surface and the lower surface of the rotor core 25, respectively. The arrangement of the permanent magnets 26 fixed to the upper surface of the rotor core 25 and the arrangement of the permanent magnets 26 fixed to the lower surface of the rotor core 25 are the same. However, the permanent magnets 26 positioned one above the other with the rotor core 25 interposed therebetween are arranged upside down so that the directions of the magnetic poles are opposite to each other.

  As shown in FIG. 4, the outer cylinder member 28 is disposed on the outer side of the rotor core 25 and the like in a state of being externally fitted to the rotor core 25 and the permanent magnet 26 fixed thereto.

  As shown in FIGS. 8 to 10, the outer cylinder member 28 has an axial dimension substantially equal to a dimension obtained by adding the thickness of the upper and lower permanent magnets 26 to the thickness of the rotor core 25. The upper and lower ends of the outer cylinder member 28 are provided with flange portions 28b that project inward over the entire circumference, and the permanent magnets 26 fixed to the upper and lower surfaces of the rotor core 25 by the flange portions 28b are rotor cores. It is pressed down to the 25 side.

  As shown in FIGS. 4 and 6, a stepped portion 26b extending in the circumferential direction is formed at the radially outer edge portion of each permanent magnet 26, and the flange portion 28b is formed on the stepped portion 26b from the counter rotor core 25 side. By engaging, the upper and lower end surfaces of the outer cylinder member 28 and the surfaces of the upper and lower permanent magnets 26 are flush with each other. The axial dimension of the inner cylinder member 27 is also equal to the axial dimension of the outer cylinder member 28. Accordingly, the upper surfaces of the inner cylinder member 27, the outer cylinder member 28, and the permanent magnets 26 positioned therebetween are mutually connected. It is flush and each bottom is likewise flush.

  The outer cylinder member 28 is composed of two parts 29A and 29B fitted in the axial direction. With this configuration, the permanent magnet 26 fixed to the upper and lower surfaces of the rotor core 25 is attached to the flange portion 28b. It is possible to press from both sides.

  The clamp member 32 reinforces the fixing strength between the rotor core 25 and the permanent magnet 26 by sandwiching the rotor core 25 and the permanent magnets 26 fixed to the upper and lower surfaces thereof integrally from the upper and lower sides.

  As shown in FIGS. 2 and 3, the clamp member 32 moves the rotor main member 24 at a position corresponding to each permanent magnet 26, specifically, at the end portion of each permanent magnet 26 in the circumferential direction. The rotor main member 24 is mounted so as to be gripped from the outside in the radial direction. In this example, eight clamp members 32 are attached to the rotor main member 24.

  As shown in FIGS. 3 and 7, each clamp member 32 includes a pair of arm portions 33 a and 33 a extending in the radial direction of the rotor main member 24 at positions on the upper and lower sides of the rotor main member 24, and the arm portions 33 a, It has a U-shaped shape in a side view having a connecting portion 33b that connects 33a at a position radially outside the rotor main member 24. As shown in FIGS. 2 and 5, the clamp member 32 is a rotor main member so that the end portions of a pair of permanent magnets 26 adjacent in the circumferential direction are sandwiched between the arm portions 33 a and 33 a on both the upper and lower sides of the rotor core 25. 24. With this configuration, the permanent magnets 26 on the upper and lower sides of the rotor core 25 are pressed against the rotor core 25 by the two clamp members 32.

  As shown in FIGS. 5 and 6, stepped portions 26a extending in the radial direction are formed at both ends in the circumferential direction of each permanent magnet 26, and the arm portions 33a and 33a of the clamp member 32 are adjacent to each other. The stepped portion 26b is engaged from the side opposite to the rotor core 25 in a state of being interposed between the permanent magnets 26. With this configuration, the surfaces of the arm portions 33a and 33a and the surfaces of the upper and lower permanent magnets 26 are flush with each other.

  Also, as shown in FIGS. 8 and 9, grooves 28a each having a shape corresponding to the clamp member 32 are formed at positions corresponding to between the adjacent permanent magnets 26 in the outer cylinder member 28. Similarly, grooves 27a having shapes corresponding to the arm portions 33a and 33a of the clamp members 32 are formed at the same position of the inner cylinder member 27. The clamp member 32 is mounted on the rotor main member 24 in a state in which the clamp member 32 is fitted in the grooves 27a and 28a (corresponding to the positioning portion of the present invention), so that the surface of the clamp member 32 is an inner cylinder member. 27, the upper and lower surfaces, and the upper and lower surfaces and the outer peripheral surface of the outer cylinder member 28 are flush with each other. That is, as shown in FIG. 1, the rotor body 22 is formed in a disk shape with almost no irregularities on its upper and lower surfaces and outer peripheral surface.

  The rotating shaft 20 is inserted inside the inner cylinder member 27 of the rotor body 22 configured as described above, and the rotor body 22 is fixed to the rotating shaft 20 in this state.

  Specifically, as shown in FIG. 3, a flange portion 20 a and a male screw portion 20 b are provided at a predetermined interval corresponding to the rotor body 22 in the middle portion of the rotating shaft 20, and the rotor body 22 is a ring member 35. It is prevented from coming off by this flange 20a. Then, when the nut member 34 is screwed and attached to the male screw portion 20b, the rotor body 22 is rotated between the nut member 34 and the flange portion 20a (ring member 35) in the axial direction. 20 is fixed. In addition, although illustration is abbreviate | omitted, the inner cylinder member 27 and the rotating shaft 20 are stopped by key coupling.

  In the state where the rotor body 22 is fixed to the rotary shaft 20, as shown in FIG. 3, the tips of the arm portions 33a, 33a of the clamp members 32 are pressed toward the rotor core 25 by the nut member 34 and the ring member 35. Yes. Note that a flange 33c extending in the opposite direction along the rotation shaft 20 is formed at the tip of each arm 33a, 33a of the clamp member 32, and the flange 33c of the upper arm 33a is the nut member 34. It is inserted into the recess 34 a formed at the center, and the flange portion 33 c of the lower arm portion 33 a is inserted inside the ring member 35. Thereby, the collar part 33c of each arm part 33a is restrained from the radial direction outer side, and the displacement is controlled to the radial direction outer side of each clamp member 32. In this example, the nut member 34 and the ring member 35 correspond to the fixing member of the present invention, and the concave portions 34a of the nut member 34 and the respective inner peripheral surfaces of the ring member 35 correspond to the restraining portions of the present invention.

  According to the rotating electrical machine 1A as described above, since the permanent magnets 26 and the rotor core 25 are sandwiched integrally by the clamp members 32 from both sides in the axial direction of the rotating shaft 20, the permanent magnets are bonded and fixed to the rotor core. As compared with the conventional structure only, the fixing strength of each permanent magnet 26 with respect to the rotor core 25 is increased. Accordingly, the permanent magnet 26 is effectively prevented from falling off during the rotation of the rotor 2, and the durability of the stator 4 at a high rotational speed and high torque can be improved with a simple structure.

  In particular, according to the rotating electrical machine 1A, the arm portions 33a and 33a of the clamp members 32 are pressed by the nut member 34 and the ring member 35, so that the arm portions 33a and 33a are lifted from the permanent magnet 26 during the rotation of the rotor. Therefore, each permanent magnet 26 can be reliably pressed down to the rotor core 25 side.

  In addition, since each clamp member 32 is restrained from being displaced radially outward by the flange portion 33c formed at the tip of the arm portions 33a and 33a being restrained by the nut member 34 and the ring member 35, The clamping member 32 is reliably prevented from detaching radially outward from the rotor main member 24 by the force. Further, as described above, each clamp member 32 is mounted on the rotor main member 24 in a state where the surface thereof is flush with the respective outer surfaces of the permanent magnet 26, the inner cylinder member 27, and the outer cylinder member 28. As the stator 4 rotates, the clamp member 32 is prevented from being displaced in the circumferential direction due to air resistance. Therefore, according to the rotating electrical machine 1A, there is an advantage that the permanent magnet 26 can be stably pressed down for a long time by the clamp member 32.

  Further, according to this rotating electrical machine 1A, the permanent magnet 26 is pressed by the clamp members 32 (arm portions 33a, 33a) at the positions of both ends in the circumferential direction, so that the magnetic action of the permanent magnet 26 is not hindered. . Moreover, since each clamp member 32 is mounted on the rotor main member 24 without forming irregularities on the upper and lower surfaces and the outer peripheral surface of the rotor body 22 as described above, it does not receive air resistance. In other words, since the clamp member 32 does not become a rotational resistance, there is an advantage that the durability of the rotor 2 can be improved without significantly impairing the efficiency of the rotating electrical machine 1A.

(Second Embodiment)
Next, a rotating electrical machine 1B according to a second embodiment of the present invention will be described.

  13 and 14 show the rotor 2 of the rotating electrical machine 1B. FIG. 13 is a plan view (partial cross-sectional view), and FIG. 14 is a cross-sectional view showing the rotor 2 respectively. The rotating electrical machine 1B of the second embodiment is configured to be able to circulate a coolant such as oil to the rotor 2, and is different in configuration from the rotating electrical machine 1A of the first embodiment in this respect. .

  More specifically, the rotating shaft 20 is constituted by a hollow shaft, the inside of the rotating shaft 20 is vertically divided at a position between the flange portion 20a and the male screw portion 20b, and the upper side is a coolant introduction passage. Pi is the lower side and a cooling liquid outlet passage Po. In this example, the introduction passage Pi and the discharge passage Po correspond to the introduction / extraction passage of the coolant in the present invention.

  As shown in FIG. 16, a plurality of upper openings 21 a communicating with the introduction passage Pi are arranged at positions corresponding to positions on the outer peripheral surface of the rotary shaft 20 corresponding to the upper grooves 27 a of the inner cylinder member 27. A plurality of lower openings 21b communicating with the lead-out path Po are formed at equal intervals in the circumferential direction at positions corresponding to the lower grooves 27a of the inner cylinder member 27. .

  On the other hand, as shown in FIGS. 14 and 15, each clamp member 32 has a distal end of one arm portion 33 a (on the opposing surface of each arm portion 33 a, 33 a and the side surface of the coupling portion 33 b on the permanent magnet 26 side). A continuous groove 33d is formed extending radially outward from the flange portion 33c side and extending to the other end via the connecting portion 33b. As a result, as shown in the figure, a U-shaped (U-shaped in FIG. 14) coolant passage surrounded by the clamp member 32, the permanent magnet 26, the rotor core 25, and the like inside the rotor body 22, A coolant passage P that connects the upper opening 21a and the lower opening 21b is formed.

  That is, in the rotating electrical machine 1B of the second embodiment, although not shown, the coolant supplied from the coolant tank by driving the pump is supplied to each coolant passage through the introduction passage Pi and the upper opening 21a of the rotating shaft 20. As shown by the arrow in FIG. 14, after flowing between the adjacent permanent magnets 26 along the clamp member 32, it is collected in the cooling liquid tank through the lower opening 21b and the outlet passage Po. It is comprised so that.

  According to the second embodiment portable electric machine 1B, since the rotor body 22 can be actively cooled with the coolant, the rotor 2 can be further enjoyed while enjoying the same effects as the rotary electric machine 1A of the first embodiment. There is an advantage that a reduction in motor efficiency due to the heat generation can be suppressed. In particular, in this configuration, the coolant flows directly along the permanent magnet 26 and the rotor core 25, so that the rotor body 22 can be effectively cooled.

  The rotating electric machines 1A and 1B described above are examples of preferred embodiments of the axial gap type rotating electricity according to the present invention, and the specific configuration thereof can be appropriately changed without departing from the gist of the present invention. It is.

  For example, the rotary electric machines 1A and 1B are so-called one-rotor two-stator type axial gap type rotary electric machines in which stators are provided on both sides of a rotor (rotor main body). The present invention can also be applied to an axial gap type rotating electrical machine on the side of a two-rotor 1 stator provided with a rotor. For example, as shown in FIG. 17, the rotor in this case has a configuration in which the non-stator side of the upper and lower permanent magnets 26 of the rotor main member 24 is omitted in the structure of the rotor 2 of the rotating electrical machine 1 </ b> A. And it is sufficient. In this case, a disk-shaped reinforcing member made of a non-magnetic material (stainless steel, aluminum, resin, etc.) may be fixed to the rotor core 25 instead of the permanent magnet 26 on the side opposite to the stator. According to this configuration, the rigidity of the rotor body 22 can be increased in a structure in which the permanent magnet 26 is provided only on one side of the rotor core 25.

  In such a 2-rotor 1-stator axial gap type rotating electrical machine, the permanent magnet 26 is fixed only on one side of the rotor core 25, so that the magnetic flux passing through the permanent magnet 26 needs to be smoothly bent along the rotor core 25. There is. Therefore, in this case, instead of the electromagnetic steel plate rotor core 25 as in the above embodiment, a soft iron core, that is, a soft magnetic metal powder whose surface is electrically insulated, for example, pure Fe, Fe-Si series In addition, it is preferable to use a metal powder such as Fe-Ni-based material which is compression-molded together with a binder. Thus, if a dust core is applied as the rotor core 25, the dust core has low restraint on the flow of magnetic flux, so that an ideal magnetic flux can be formed from the permanent magnet 26 to the rotor core 25. This contributes to improvement of motor efficiency.

  Further, the rotor core 25 may be omitted in the rotating electrical machine 1A. That is, the rotor main member 24 is disposed between the inner cylinder member 27 that is externally fitted to the rotor main member rotation shaft 20, the outer cylinder member 28 that is provided on the outer side, and the inner cylinder member 27 and the outer cylinder member 28. And a plurality of permanent magnets 26 arranged in the circumferential direction, and the clamp member 32 is attached to the rotor main member 24 so as to be sandwiched from both the upper and lower sides at the positions of both ends of the permanent magnet 26 in the circumferential direction. May be. In this case, the permanent magnet 26 may have two upper and lower layers as in the rotating electrical machine 1A, or may be a single layer. According to such a structure, it is possible to simplify the structure while improving the durability of the rotor 2 to some extent.

1A, 1B Axial gap type rotating electrical machine 2 Rotor 4 Stator 6 Housing 20 Rotating shaft 22 Rotor body 24 Rotor main member 25 Rotor core 26 Permanent magnet 32 Clamp member

Claims (10)

In an axial gap type rotating electrical machine including a rotor including a rotation shaft and a rotor body that rotates together with the rotation shaft, and a stator disposed in the axial direction of the rotation shaft so as to face the rotor body.
The rotor body includes a rotor main member including a disk-shaped rotor core and a plurality of permanent magnets fixed in a circumferential direction on a stator facing surface of the rotor core, and the rotor main member is made permanent in the circumferential direction. An axial gap type rotating electrical machine including a clamp member sandwiched from both sides in the axial direction at positions of both end portions of the magnet. In the axial gap type rotating electrical machine according to claim 1,
The clamp member connects a pair of arm portions extending in the radial direction of the rotor main member at positions on both sides of the rotor main member in the axial direction and the pair of arm portions at positions radially outside the rotor main member. An axial gap type rotating electrical machine having a connecting portion. In the axial gap type rotating electrical machine according to claim 2,
Including a fixing member that sandwiches the rotor main member from both sides in the axial direction and fixes the rotor main member to the rotating shaft;
Each of the arm portions of the clamp member is pressed to the permanent magnet side from the outside in the axial direction by the fixing member. In the axial gap type rotating electrical machine according to claim 3,
Each of the pair of arm portions includes a flange portion that extends in a direction opposite to each other along the rotation shaft at the end on the rotation shaft side,
The axial member of the axial gap type rotating electrical machine, wherein the fixing member includes a restraining portion that restrains the flange portion from the radially outer side. In the axial gap type rotating electrical machine according to claim 2 or 3,
The rotor main member includes an inner cylinder member that is located at the center and is externally fitted to the rotation shaft, and an outer cylinder member that is externally fitted to the rotor core,
An axial gap type rotating electrical machine characterized in that a positioning portion for positioning each clamp member in the circumferential direction is formed in the inner cylinder member and the outer cylinder member. In the axial gap type rotating electrical machine according to any one of claims 2 to 5,
Each of the arm portions of the clamp member integrally presses a circumferentially adjacent permanent magnet at the positions of these circumferential end portions. In the axial gap type rotating electrical machine according to claim 6,
The rotor body includes a plurality of coolant passages formed by a pair of permanent magnets adjacent to each other in the circumferential direction, an arm portion of the clamp member, and the rotor core and extending in the radial direction.
The axial gap type rotating electrical machine according to claim 1, wherein the rotating shaft includes therein a coolant introduction / extraction passage communicating with each of the coolant passages. In the axial gap type rotating electrical machine according to any one of claims 1 to 7,
The rotor main member is an axial gap type rotating electrical machine in which the plurality of permanent magnets are fixed to both sides of the rotor core in the axial direction. In the axial gap type rotating electrical machine according to any one of claims 1 to 7,
The rotor main member is an axial member in which the plurality of permanent magnets are fixed only on one side of the rotor core in the axial direction and a reinforcing member made of a non-magnetic material is fixed on the other side. Gap type rotating electrical machine. In an axial gap type rotating electrical machine including a rotor including a rotation shaft and a rotor body that rotates together with the rotation shaft, and a stator disposed in the axial direction of the rotation shaft so as to face the rotor body.
The rotor main body is located at the center of the inner cylinder member that is externally fitted to the rotation shaft, the outer cylinder member that is provided outside the rotor body, and the rotor main body that is disposed between the inner cylinder member and the outer cylinder member and that extends in the circumferential direction. An axial gap comprising: a rotor main member including a plurality of permanent magnets arranged; and a clamp member that sandwiches the rotor main member from both sides in the axial direction at positions of both end portions of each permanent magnet in the circumferential direction. Type rotating electric machine.

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