Rotating electric machine case and rotating electric machine device

Abstract

To provide a case for a rotary electric machine which enables improvement of versatility, and to provide a rotary electric machine device.SOLUTION: A case for a rotary electric machine includes: a hollow body member in which both axial ends are open; and a division member having an attachment part, to which an accessory member may be attached, and detachably provided in at least one end of the body member.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] An embodiment of the present invention relates to a rotating electric machine case and a rotating electric machine device. [Background technology]

[0002] Conventionally, in rotating electrical devices such as electric motors and generators, a case located on the outside of a stator is configured to allow attachment of an accessory such as a terminal box. A structure is known in which the position of the accessory can be changed by rotating the case in the circumferential direction or by rotating it in the axial direction.

[0003] However, when changing the accessory parts depending on the application of the rotating electrical machine, for example, the case itself must be replaced, which poses a problem in that it is not possible to flexibly respond to application specifications. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 9-065598 Summary of the Invention [Problem to be solved by the invention]

[0005] Therefore, an embodiment of the present invention provides a rotating electric machine case and a rotating electric machine device that can improve versatility. [Means for solving the problem]

[0006] The rotating electric machine case of one embodiment comprises a hollow main body member open at both axial ends, and a dividing member having an attachment portion to which an accessory member can be attached and removably attached to at least one end of the main body member.

[0007] The rotating electric machine device of the embodiment includes a rotating electric machine case, a stator fixed to the inside of the main body member, and a rotor rotatably provided with a gap between them with respect to the stator. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a cross-sectional view showing an example of a rotating electrical machine according to a first embodiment; [Diagram 2] FIG. 1 is a diagram showing an example of a rotating electrical machine device according to a first embodiment, in which a main body member is viewed from an axial direction of a case. [Diagram 3] FIG. 1 is a diagram showing an example of a rotating electric machine device according to a first embodiment, in which a divided member is viewed from the axial direction of a case. [Figure 4] FIG. 1 is a diagram showing a bracket disposed on a load side of a case of an example of a rotating electric machine device according to a first embodiment, as viewed from an axial direction of the case; [Diagram 5] FIG. 1 is a diagram showing a bracket disposed on a non-load side of a case as viewed from an axial direction of the case in an example of a rotating electric machine according to a first embodiment; [Figure 6] FIG. 1 is a cross-sectional view showing an example of a rotating electric machine device according to a first embodiment with a main body member, a divided member, and a bracket removed; [Figure 7] FIG. 11 is a view showing another example of a divided member of the rotating electric machine device according to the first embodiment, as viewed from the axial direction of the case. [Figure 8] FIG. 11 is a view of a divided member of an example of a rotating electric machine device according to a second embodiment, viewed from the axial direction of a case. [Figure 9] FIG. 11 is a cross-sectional view showing an example of a rotating electric machine according to a third embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, a number of embodiments will be described with reference to the drawings. Note that substantially the same elements in the number of embodiments will be denoted by the same reference numerals, and the description thereof will be omitted.

[0010] (First embodiment) The rotating electric machine 1 of the embodiment shown in Fig. 1 is configured with a protection method using a totally enclosed outer casing structure, and can be configured as, for example, a totally enclosed fan-cooled type. The rotating electric machine 1 is for rotating and driving a load machine (not shown), such as a pump or a blower. As shown in Fig. 1, the rotating electric machine 1 includes a rotating electric machine case 10, a rotating electric machine main body 20, and bearings 31 and 32. In the following description, the rotating electric machine case 10 may be simply referred to as case 10.

[0011] All or a part of the rotating electric machine body 20 is housed in the rotating electric machine case 10. The rotating electric machine body 20 can be configured to have a stator 21, a rotor 22, a shaft 23, and a fan 24. In the following description, a direction parallel to the central axis O of the shaft 23 is referred to as an axial direction. When the rotor 22 is rotated around the central axis O, the moving direction of the outer circumferential surface of the rotor 22 is referred to as a circumferential direction. A direction perpendicular to the central axis O is referred to as a radial direction. Also, the right side of the paper in FIG. 1 is referred to as a side where the rotating electric machine device 1 is connected to a load machine, that is, a load side, and the left side of the paper in FIG. 1 is referred to as a counter-load side.

[0012] The case 10 constitutes the outer shell of the rotating electric machine device 1, and is configured to be hollow as a whole, as shown in Fig. 1. The case 10 has a function of accommodating therein the stator 21, the rotor 22, a part of the shaft 23, and the fan 24. The stator 21 is fixed to the inside of the case 10. The stator 21 has a stator core 211 and a stator winding 212. The stator core 211 is configured, for example, in a cylindrical shape, and is formed by laminating a plurality of disk-shaped electromagnetic steel sheets. The stator winding 212 is wound around the stator core 211.

[0013] The rotor 22 is provided inside the stator 21 and is rotatable relative to the stator 21 via a gap. That is, in this embodiment, the rotating electric machine device 1 can be configured as, for example, an inner rotor type rotating electric machine device. Although not shown in detail, the rotor 22 is configured to have, for example, a rotor core configured by laminating a plurality of disk-shaped electromagnetic steel plates, and a permanent magnet embedded in the rotor core.

[0014] The shaft 23 is disposed through the center of the rotor 22 and is configured to be rotatable integrally with the rotor 22. Both end portions of the shaft 23 are rotatably supported with respect to the rotating electric machine case 10 via bearings 31 and 32, respectively.

[0015] The fan 24 is provided at the end 231 on the anti-load side of the shaft 23, and rotates with the rotation of the shaft 23. As the fan 24 rotates, air is blown toward the outer periphery of the case 10, and the rotating electrical machine main body 20 is cooled by heat exchange with the heat dissipation fins.

[0016] 1, the case 10 can be configured to include, for example, a main body member 11, a divided member 12, and brackets 13 and 14. The case 10 can have a large number of fins (not shown) for heat dissipation. The fins are provided, for example, on one or both of the main body member 11 and the divided member 12, and protrude radially outward from the outer periphery of the main body member 11 or the divided member 12 to extend in the axial direction.

[0017] The main body member 11 and the divided members 12 are configured to be detachable from each other. When combined with each other, the main body member 11 and the divided members 12 are configured to have a tubular shape with both ends open, in this case a cylindrical shape. The main body member 11 and the divided members 12 are fitted into each other in a so-called spigot-and-so relationship. All or most of the stator 21 and the rotor 22 are disposed inside the main body member 11 and the divided members 12.

[0018] The main body member 11 is provided on the axial load side of the case 10. On the other hand, the divided members 12 are provided on the axial anti-load side of the case 10. The inner diameter of the main body member 11 and the inner diameter of the divided portions are set to be approximately the same dimension. In other words, when the main body member 11 and the divided members 12 are combined, there is almost no step at the boundary between the main body member 11 and the divided members 12 on the inner surfaces of the main body member 11 and the divided members 12. Also, the axial length dimension of the main body member 11 can be made larger than the axial length dimension of the divided members 12. In this case, the main body member 11 covers most of the stator 21.

[0019] Brackets 13, 14 are attached to the ends of main body member 11 or split members 12, and cover the axial outer periphery of rotating electric machine body 20 housed within main body member 11 and split members 12. Bracket 13 is provided on the end on the load side with respect to case 10, i.e., main body member 11. Meanwhile, bracket 14 is provided on the end on the anti-load side with respect to case 10, i.e., split member 12.

[0020] The main body member 11, the divided members 12, and the brackets 13 and 14 can be detachably connected by one or more connecting members 40. For example, the connecting members 40 can be composed of multiple sets of bolts 41 and nuts 42. In this case, as shown in FIG. 1, for example, the bolt 41 is disposed penetrating the main body member 11, the divided members 12, and the brackets 13 and 14 from one end of the case 10 to the other end, and the nut 42 is attached to the other end. In this way, the main body member 11, the divided members 12, and the brackets 13 and 14 are fixed to each other.

[0021] In this embodiment, the main body member 11 and the divided members 12 are configured to be mutually fixed at a plurality of positions rotated relative to the central axis O of the main body member 11 and the divided members 12. For example, as shown in Figs. 2 and 3, the divided members 12 can be fixed to the main body member 11 at positions of 60°, 180°, and 300° around the central axis O. In this case, the bracket 14 attached to the divided member 12 is also disposed at a position rotated together with the divided member 12. In this case, the bracket 14 attached to the divided member 12 may be configured so that the angle with respect to the main body member 11 changes with the change in the mounting position of the divided member 12 with respect to the main body member 11, or may be configured so that the angle with respect to the main body member 11 is always constant regardless of the change in the mounting position of the divided member 12 with respect to the main body member 11.

[0022] For example, the main body member 11 and the divided members 12 have mounting seats 111, 121 and through holes 112, 122, respectively. The mounting seats 111, 121 are provided so as to protrude radially outward from the outer periphery of the main body member 11 or the outer periphery of the divided members 12, respectively, and extend in the axial direction. The mounting seats 111, 121 are formed over the entire axial length of the outer periphery of the main body member 11 and the outer periphery of the divided members 12, respectively. As shown in Figures 2 and 3, a plurality of mounting seats 111, 121 (in this case three) are provided at equal intervals in the circumferential direction on the outer periphery of the main body member 11 and the outer periphery of the divided members 12.

[0023] The mounting seats 111, 121 are arranged at equal angular intervals θ1, 120 degrees in this case, around the central axis O when viewed in the axial direction. The angular interval θ1 is not limited to 120 degrees and can be set to any angular interval. In other words, the mounting seats 111 and 121 are arranged so as to overlap at positions corresponding to when the main body member 11 and the divided member 12 are opposed to each other. In the following description, when it is necessary to specify each of the three mounting seats 121, these three mounting seats 121 will be distinguished as 121a, 121b, and 121c.

[0024] The through holes 112, 122 are, for example, cylindrical and are formed through the mounting seats 111, 121. The mounting seats 111, 121 are not limited to being provided at equal intervals in the circumferential direction of the outer periphery of the main body member 11 or the outer periphery of the divided member 12, but may be provided at unequal intervals. The mounting seats 111, 121 are not limited to being provided in a plurality of positions, but may be configured as an annular shape around the entire circumferential direction of the outer periphery of the main body member 11 or the outer periphery of the divided member 12. In this case, the through holes 112, 122 may be configured to be formed in a plurality of positions at any intervals with respect to the annular mounting seats 111, 121. In the following description, when it is necessary to specify each of the three through holes 122, these three through holes 122 are distinguished as 122a, 122b, and 122c.

[0025] For example, the brackets 13 and 14 have connection seats 131 and 141 and connection holes 132 and 142, respectively. The connection seats 131 and 141 are for connecting the bracket 13 and the main body member 11, and the bracket 14 and the divided member 12, respectively. As shown in Figs. 4 and 5, the connection seats 131 and 141 are provided protruding radially outward from the outer periphery of the brackets 13 and 14. As shown in Figs. 4 and 5, the connection seats 131 and 141 are provided, for example, in a plurality of positions (three in this case) at equal intervals in the circumferential direction of the outer periphery of the brackets 13 and 14. The connection seats 131 and 141 are arranged at equal angular intervals θ2, 120 degrees in this case, around the central axis O, as viewed in the axial direction. The angular interval θ2 is not limited to 120 degrees and can be set to any angular interval. In the following description, when it is necessary to specify each of the three connection seats 141, these three connection seats 141 are distinguished as 141a, 141b, and 141c.

[0026] As shown in Figs. 4 and 5, the connection holes 132, 142 are formed, for example, in a cylindrical shape through the connection seats 131, 141. The connection seats 131, 141 are not limited to being arranged at equal intervals in the circumferential direction of the outer periphery of the brackets 13, 14, but may be arranged at unequal intervals. The connection seats 131, 141 are not limited to being arranged in a plurality of positions, but may be arranged in an annular shape around the entire circumferential direction of the outer periphery of the brackets 13, 14. In this case, the connection holes 132, 142 may be arranged in a plurality of positions at any intervals with respect to the annular connection seats 131, 141. In the following description, when it is necessary to specify each of the three connection holes 142, these three connection holes 142 are distinguished as 142a, 142b, and 142c.

[0027] The positions of connecting seat 131 and mounting seat 111 and the positions of connecting seat 141 and mounting seat 121 are arranged to overlap at positions corresponding to when brackets 13, 14 are opposed to main body member 11 and divided member 12. Also, connecting holes 132, 142 are formed at positions corresponding to through holes 112, 122 at the same circumferential angular intervals around central axis O, 120 degrees in this case, when viewed in the axial direction.

[0028] The divided member 12 has an attachment portion 15. The attachment portion 15 is provided on either or both of the outer periphery and the inner periphery of the divided member 12. In this embodiment, as shown in FIG. 1 etc., the attachment portion 15 is provided on the outer periphery of the divided member 12, and is configured so that a terminal box 51 can be attached thereto, which houses a terminal block 511 therein for connecting electrical wiring from an external power source (not shown). The attachment portion 15 is formed, for example, in the shape of a hollow box. The attachment portion 15 has a hole 151. The hole 151 is provided on the top surface of the attachment portion 15, and communicates between the inside and the outside of the attachment portion 15.

[0029] In this case, divided member 12 is provided with hole 123 formed in the thickness direction of divided member 12 at a position corresponding to mounting portion 15. Electrical wiring (not shown) connected to stator winding 212 is led from hole 151 into terminal box 51 via hole 123 and the internal space of mounting portion 15, and connected to terminal block 511. Terminal box 51 is an example of an accessory member 50 attached to rotating electric machine device 1.

[0030] Here, it may become necessary to change the position of the terminal box 51 depending on the installation location of the rotating electrical machine device 1 and other factors. In this case, when the terminal box 51, which is disposed at the top as viewed in the axial direction, is to be moved to the right, for example, as shown in Fig. 5, the nuts 42 are removed from the bolts 41, and the main body member 11, the divided members 12, and the brackets 13 and 14 are disconnected from each other, as shown in Fig. 6. Then, when the divided member 12 is rotated 120 degrees to the right in the circumferential direction while maintaining the positions of the main body member 11 and the brackets 13 and 14, the positional relationship between the connection seat 141a and the connection hole 142a and the mounting seat 121a and the through hole 122a, which corresponds to the connection seat 141a and the connection hole 142a and the mounting seat 121c and the through hole 122c, is changed from the positional relationship between the connection seat 141a and the connection hole 142a and the mounting seat 121c and the through hole 122c, which corresponds to each other, when the terminal box 51 is disposed at the top.

[0031] In this state, after assembling the main body member 11, the split members 12, and the brackets 13 and 14, the position of the terminal box 51 in the case 10 can be changed by passing the bolt 41 through each of the connection holes 132, 142 and each of the through holes 112, 122 and attaching the nut 42 to the bolt 41. That is, the position of the terminal box 51 can be changed by rotating the split member 12. In this manner, by selectively combining the connection seat 141 and the connection hole 142 with the mounting seat 121 and the through hole 122, the circumferential position of the terminal box 51 attached to the split member 12 can be changed.

[0032] According to the embodiment described above, the rotating electric machine case 10 includes the main body member 11 and the divided members 12. The main body member 11 is configured to be hollow with both axial ends open. The divided members 12 are detachably arranged on at least one end of the main body member 11. The divided members 12 have attachment portions 15. The attachment portions 15 can attach the accessory members 50. In this way, by preparing a plurality of types of divided members 12 to which different types of accessory members 50 are attached, and appropriately changing to the optimal divided member 12 according to the user's intended use, the case 10 can be flexibly adapted to the application specifications without changing the design of the main body member 11. This can increase the versatility of the rotating electric machine case 10.

[0033] Conventionally, cases for rotating electric machines are manufactured by casting. When the case is made of a single molded product, if the length of the rotor or stator is to be extended to meet the performance required for the rotating electric machine, the length of the case must also be extended. In this case, it is necessary to prepare a mold for each length of the case, and as a result, the number of types of molds increases. In contrast, the case 10 is not a single molded product, but is made of multiple members, including the main body member 11 and the divided members 12. For this reason, for example, the main body member 11 is not changed, and the divided members 61 with an extended length are manufactured to meet the need to extend the length of the case 10. In other words, the length of the case 10 can be changed by changing the length of the divided members 12 based on the main body member 11.

[0034] In this case, a type of mold is required to produce the divided members 61, but since the production of the length of the main body member 11 can be omitted, a smaller mold can be produced compared to the case of producing a mold for the entire case 10. This makes it possible to respond to the extension of the dimensions of the case 10 while keeping production costs as low as possible. When changing the length of the case 10, the length of the main body member 11 may be changed based on the divided members 12. In this case, the divided members 12 may be referred to as the main body members, and the main body members 11 may be referred to as the divided members.

[0035] Furthermore, the main body member 11 and the divided members 12 are configured to be fixable to each other at a plurality of positions rotated relative to the central axis O of the main body member 11 and the divided members 12. With this, it is possible to change the circumferential position of the accessory member 50 attached to the divided members 12, for example, by rotating the divided members 12 in the circumferential direction while maintaining the position of the main body member 11. Therefore, it is possible to easily change the circumferential position of the accessory member 50 attached to the divided members 12 according to the installation space of the rotating electric machine case 10, etc., without changing the usage state of the main body member 11.

[0036] The rotating electric machine 1 also includes a case 10, a stator 21, and a rotor 22. The stator 21 is fixed to the inside of the main body member 11. The rotor 22 is provided rotatably relative to the stator 21 via a gap. By installing the accessory member 50 on the divided member 12 in advance before connecting the main body member 11 and the divided member 12, the accessory member 50 can be attached without interfering with the stator 21, etc., fixed to the inside of the main body member 11. This improves the ease of assembly of the rotating electric machine 1.

[0037] The rotating electric machine device 1 further includes a shaft 23 and a fan 24. The shaft 23 rotatably supports the rotor 22, and rotates with the rotation of the rotor 22. The fan 24 is provided at an end 231 on the anti-load side of the shaft 23, and rotates with the rotation of the shaft 23. The divided member 12 is disposed on the anti-load side in the axial direction of the case 10. By providing the divided member 12 on the anti-load side of the case 10, it is possible to obtain an air-cooling effect for the accessory member 50 by utilizing the air blown from the fan 24.

[0038] In addition, the multiple mounting seats 121 of the divided member 12 can be configured at angular intervals smaller than the angular intervals in the circumferential direction of each connecting seat 141 of the bracket 14 and each mounting seat 111 of the main body member 11. In this case, in the example of FIG. 7, the mounting seats 121 of the divided member 12 are provided at multiples of six mounting seats 121 at equal intervals in the circumferential direction of the outer periphery of the divided member 12. The mounting seats 121 are arranged at equal angular intervals θ3, 60 degrees in this case, around the central axis O when viewed in the axial direction. That is, the angular intervals in the circumferential direction of each connecting seat 141 of the bracket 14 and each mounting seat 111 of the main body member 11 can be set to n times the angular intervals in the circumferential direction of each mounting seat 121. This makes it easier to adjust the change in the circumferential position of the terminal box 51 by increasing the number of mounting seats 121 of the divided member 12 while minimizing the number of connecting seats 141 and mounting seats 111.

[0039] Second embodiment Next, a second embodiment will be described with reference to Fig. 8. The configuration of this second embodiment differs from that of the first embodiment in the configuration of the mounting portion 15. Specifically, in this embodiment, the divided member 12 has a plurality of mounting portions 15 (in this case two mounting portions 15). In the following description, when it is necessary to specify each of the two mounting portions 15, these two mounting portions 15 will be distinguished as 15a and 15b.

[0040] The mounting portion 15a is configured to be able to mount a terminal box 51 as an accessory member 50. The mounting portion 15b is provided, for example, on the inner periphery of the divided member 12, and is configured to be able to mount a sensor 52 as an accessory member 50. The sensor 52 measures physical quantities such as vibration, sound, and temperature. That is, the sensor 52 is for monitoring the operating status of the rotating electrical machine device 1. The mounting portion 15b is formed, for example, in a hollow box shape. In this case, a hole (not shown) is provided in the divided member 12 at a position corresponding to the mounting portion 15b, penetrating the divided member 12 in the thickness direction. A signal line (not shown) connected to the sensor 52 is led into the terminal box 51 through the internal space of the mounting portion 15b and connected to the terminal block 511. In the example of FIG. 8, the mounting portion 15a and the mounting portion 15b are provided at approximately the same position in the circumferential direction of the divided member 12, but this is not limited thereto, and the mounting portion 15a and the mounting portion 15b may be provided at different positions in the circumferential direction of the divided member 12.

[0041] According to the second embodiment, by providing a plurality of attachment portions 15 on the divided member 12, a plurality of accessory members 50 can be attached to the divided member 12. As a result, the versatility and convenience of the case 10 can be improved.

[0042] In the second embodiment, the mounting portion 15 is configured to be capable of mounting a terminal box 51 that houses a terminal block 511 for connecting electrical wiring thereto or a sensor 52 for measuring a physical quantity as the accessory member 50. With this, by installing the accessory member 50, such as the terminal box 51 or the sensor 52, on the divided member 12 in a state in which the divided member 12 is detached from the main body member 11, it becomes easier to perform work such as routing electrical wiring, and it is possible to improve the ease of assembly work.

[0043] Third embodiment Next, a third embodiment will be described with reference to FIG. 9. The configuration of this third embodiment differs from the above-mentioned embodiments in the configuration of the case 10. In this embodiment, the case 10 further has a split member 61. Specifically, in each of the above-mentioned embodiments, the split member 12 is provided on the anti-load side of the case 10, but in this embodiment, in addition to the split member 12, a split member 61 is provided on the load side of the case 10. In other words, the split members 12 and 61 are disposed at both ends of the main body member 11 in the axial direction of the case 10.

[0044] The inner diameter of the divided member 61 and the inner diameter of the divided member 12 are set to be approximately the same. The axial length of the divided member 61 can be set to be larger or smaller than the axial length of the divided member 12. The axial length of the divided member 61 can be set to be larger or smaller than the axial length of the main body member 11. In the following description, the divided portion provided at the end of the main body member 11 on the load side is referred to as the first divided member 12, and the divided portion provided at the end of the main body member 11 on the anti-load side is referred to as the second divided member 61. In this embodiment, the first divided member 12 has the same configuration as the divided member 12 in each of the above embodiments, so the description will be omitted. In addition, the terms "first" and "second" are used simply to distinguish between similar components and do not indicate superiority or inferiority between the components.

[0045] The main body member 11 and the second divided member 61 are configured to be mutually fixed at a plurality of positions rotated relative to the central axis O of the main body member 11 and the second divided member 61. For example, the second divided member 61 can be fixed to the main body member 11 at a position of 60°, a position of 180°, and a position of 300° around the central axis O, similar to the first divided member 12. In this case, the bracket 13 attached to the second divided member 61 is also disposed at a position rotated together with the second divided member 61. In this case, the bracket 13 attached to the second divided member 61 may be configured so that the angle with respect to the main body member 11 changes with the change in the mounting position of the second divided member 61 with respect to the main body member 11, or may be configured so that the angle with respect to the main body member 11 is always constant regardless of the change in the mounting position of the second divided member 61 with respect to the main body member 11.

[0046] The load side end of the second divided member 61 can be configured to have the same shape as the load side end of the main member 11. "Identical" does not only mean a perfect match, but also means a range including, for example, an error that occurs during manufacturing. The main member 11 and divided member 61 are fitted into each other in a so-called spigot-and-so relationship.

[0047] The second divided member 61 has a mounting seat 611 and a through hole 612. The mounting seat 611 is provided so as to protrude radially outward from the outer periphery of the second divided member 61 and extend in the axial direction. The mounting seat 611 is formed over the entire axial length of the outer periphery of the second divided member 61. The mounting seat 611 and the through hole 612 are arranged so as to overlap at positions corresponding to the mounting seat 111 and the through hole 112 of the main body member 11 when the second divided member 61 faces the main body member 11. Furthermore, the mounting seat 611 and the through hole 612 are arranged so as to overlap at positions corresponding to the connection seat 131 and the connection hole 132 of the bracket 13 when the second divided member 61 faces the bracket 13. The through hole 612 is, for example, cylindrical and is formed through the mounting seat 611.

[0048] When assembling the case 10 of this embodiment, after combining the main body member 11, the divided members 12, 61, and the brackets 13, 14, the bolts 41 are inserted into the connecting holes 132, 142 and the through holes 112, 122, 612 with the connecting holes 132, 142 and the through holes 112, 122, 612 respectively arranged in overlapping positions, and the bolts 41 are fastened to the nuts 42. As a result, the main body member 11, the divided members 12, 61, and the brackets 13, 14 are fixed to each other.

[0049] The second separate member 61 may have an attachment portion 15 on its outer periphery or inner periphery. This allows the accessory member 50 to be disposed on the second separate member 61 in addition to the first separate member 12, thereby further increasing the versatility of the case 10.

[0050] Also, the third embodiment can provide the same effect as the first embodiment. For example, when changing the length dimension of the case 10, the length of the divided members 12 and 61 can be changed with the main body member 11 as a reference, thereby responding to the extension of the length of the case 10. In the case of this embodiment, the divided members 12 and 61 are provided at both ends of the main body member 11, so that the length of each divided member 12 and 61 can be appropriately changed to adjust the length on both sides of the load side and the anti-load side in the axial direction of the case 10. This allows the case 10 to be more flexibly extended in length, making it easier to respond to the addition of accessories to the inside of the case 10. When changing the length of the case 10, the length of the main body member 11 may be changed with the divided members 12 and 61 as a reference. In this case, the divided members 12 and 61 can be called the main body member, and the main body member 11 can be called the divided member.

[0051] Although several embodiments of the present invention have been described above, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their modifications are included in the scope and spirit of the invention, and are included in the scope of the invention and its equivalents described in the claims. [Explanation of symbols]

[0052] In the drawings, reference numeral 1 denotes a rotating electric machine, 10 denotes a case for a rotating electric machine, 11 denotes a main body member, 12 denotes a divided member, 15 denotes an attachment portion, 21 denotes a stator, 22 denotes a rotor, 23 denotes a shaft, 24 denotes a fan, 50 denotes an accessory member, 51 denotes a terminal box, 511 denotes a terminal block, and 52 denotes a sensor.

Claims

1. a hollow main body member having both axial ends open; a division member having an attachment portion to which an accessory member can be attached and detachably provided at least on one end of the main body member; the main body member and the divided members are configured to be fixable to each other at a plurality of positions rotated relative to a central axis of the main body member and the divided members, The number of members for fixing the main body member and the divided members to each other is greater on the divided members than on the main body member. Case for rotating electrical machine.

2. The attachment portion is provided in plurality on the divided member. The rotating electrical machine case according to claim 1 .

3. The mounting portion is configured to be capable of mounting a terminal box that houses a terminal block for connecting electrical wiring thereto or a sensor that measures a physical quantity as the accessory member. The rotating electrical machine case according to claim 1 or 2.

4. A case according to any one of claims 1 to 3; a stator fixed to the inside of the body member; a rotor rotatably provided with respect to the stator via a gap; A rotating electric machine device comprising:

5. a shaft that rotatably supports the rotor and rotates in accordance with the rotation of the rotor; A fan is provided at an end of the shaft on the opposite load side and rotates with the rotation of the shaft. The divided member is provided on the anti-load side in the axial direction of the case. The rotating electrical machine according to claim 4.

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