Rotating apparatus

Abstract

To provide a rotating apparatus with excellent cooling performance for a heat generation source.SOLUTION: A rotating apparatus includes: a shaft member (5); a cylindrical rotating body (3) capable of rotating for the shaft member (5); a bearing (4) supporting the rotating body (3) for the shaft member (5); and connecting members (81, 82) disposed between the bearing (4) and the rotating body (3) in a radial direction (cd), in which the connecting members (81, 82) have a ventilation passage connecting the inside and the outside of the rotating body 3.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to rotating equipment. [Background technology]

[0002] Traditionally, various rotating equipment has been developed, manufactured, and used according to various applications and required performance. Among them, there is a demand for improved performance such as high speed rotation, which is the basic performance of rotating equipment, and a demand for further miniaturization of the entire device, and there is a demand for realizing both demands at a higher level.

[0003] On the other hand, the coil and the stator core are likely to become even hotter due to the high speed rotation, so there is a demand for cooling the stator, which includes heat generation sources such as the coil and the stator core. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2005-102370 A Summary of the Invention [Problem to be solved by the invention]

[0005] Therefore, an example of an object of the present invention is to provide a rotating device that has excellent cooling properties for a heat generation source. [Means for solving the problem]

[0006] The above-mentioned problems can be solved by the present invention. That is, a rotating device of the present invention includes a shaft member and A cylindrical rotor rotatable relative to the shaft member; a bearing for supporting the rotating body relative to the shaft member; a connecting member disposed between the bearing and the rotating body in a radial direction, The connecting member has an air passage that communicates between the inside and the outside of the rotating body. The rotating device of the present invention may include a cylindrical housing that surrounds the rotating body, and a stator that is located inside the rotating body.

[0007] In the rotating device of the present invention, the connecting member has a plurality of blades, The plurality of blades may be oriented in a direction inclined with respect to the axial direction of the shaft member. In this case, the bearings are provided at both ends of the rotating body or in the vicinity thereof in the axial direction of the shaft member, The coupling member is disposed between each of the bearings and the rotating body, One of the connecting members may include the blade.

[0008] In this case, gas can flow in the axial direction inside the rotor, It is preferable that at least the connecting member on the gas discharge port side has the vane. The other of the connecting members may have a plurality of spokes extending radially inward and outward.

[0009] On the other hand, in the rotating device of the present invention, a blade member having a plurality of blades is provided adjacent to the connecting member in the axial direction, The blades of the blade member may be inclined. In this case, the blades of the blade member may be oriented in a direction inclined with respect to the axial direction of the shaft member. Further, the connecting member may have a plurality of spokes extending radially inward and outward.

[0010] In this case, the blade member has a protruding portion protruding toward the connecting member, The protrusion may be adapted to fit into the connecting member. In this case, the bearings are provided at both ends of the rotor in the axial direction or in the vicinity thereof, The coupling member is disposed between each of the bearings and the rotating body, The blade member may be provided on one of the connecting members on the outer side in the axial direction of the rotor.

[0011] In this case, gas can flow in the axial direction inside the rotor, It is preferable that the blade member is provided on the gas discharge port side of the connecting member, outside in the axial direction of the rotor.

[0012] In addition, the rotating device of the present invention further includes a blade member having a plurality of blades and adjacent to the connecting member in the axial direction, the blade member has an air passage connected to the air passage of the connecting member, Gas may be allowed to flow inside the rotor in both axial directions.

[0013] In this case, the connecting member may have a base facing the blades of the blade member in the axial direction of the shaft member, and the base may have a hole portion formed therein to serve as the air passage.

[0014] In the rotating device of the present invention, a rotor blade may be provided on an outer circumferential surface of the rotor. In this case, the rotor blade includes a plurality of blades, each of which has a plurality of blade portions arranged in the axial direction of the rotor, Each of the blades of the rotor blade may face an adjacent blade in a circumferential direction of the rotor body, and an end of each of the blades of the rotor blade may be located between both ends of the adjacent blade in a circumferential direction of the rotor body. [Brief description of the drawings]

[0015] [Figure 1] 1 is a see-through perspective view of a rotating device according to a first embodiment which is an example of the present invention. [Diagram 2] 2 is a transparent cross-sectional view of a section AA in FIG. 1, including an axis x of a rotating device according to a first embodiment which is an example of the present invention. [Diagram 3]1 is an enlarged perspective view of only a connecting member (inner impeller) having blades extracted from a rotating device according to a first embodiment which is one example of the present invention. [Figure 4] 1 is an enlarged perspective view of only a connecting member (spacer) having spokes extracted from a rotating device according to a first embodiment which is one example of the present invention. [Diagram 5] 1 is an exploded perspective view of a rotating device according to a first embodiment of the present invention, in which only a stator core, a bearing, an inner impeller, and a spacer are extracted. [Figure 6] 1 is a perspective view showing only a rotor blade extracted from a rotating device according to a first embodiment which is one example of the present invention. [Figure 7] 1 is an enlarged perspective view of only a rotor blade extracted from a rotating device according to a first embodiment, which is one example of the present invention, viewed from an upper side a in the axial direction. [Figure 8] FIG. 2 is an explanatory diagram illustrating a flow of gas that cools the inside of a rotor in a rotating device according to a first embodiment which is an example of the present invention. [Figure 9] 10 is a transparent cross-sectional view of a cross section including an axis x of a rotating device according to a second embodiment which is an example of the present invention. [Figure 10] 10 is an enlarged perspective view of only the blade member on the upper side a in FIG. 9 extracted from a rotating device according to a second embodiment which is one example of the present invention. FIG. [Figure 11] 10 is an enlarged perspective view of only the blade member on the lower side b in FIG. 9 extracted from a rotating device according to a second embodiment which is one example of the present invention. FIG. [Figure 12] 10 is an enlarged perspective view of only the blade members and spacers on the upper side a (lower side b) in FIG. 9 extracted from a rotating device according to a second embodiment which is one example of the present invention. FIG. [Figure 13] FIG. 11 is an exploded perspective view of a rotating device according to a second embodiment which is an example of the present invention. [Figure 14] 1 is a perspective view of a rotating device according to a second embodiment of the present invention, with only the housing removed. FIG. [Figure 15]FIG. 4 is an explanatory diagram illustrating a flow of gas that cools the inside of a rotor in a rotating device according to a second embodiment which is an example of the present invention. [Figure 16] 11 is a transparent cross-sectional view of a cross section including an axis x of a rotating device according to a third embodiment which is an example of the present invention. FIG. [Figure 17] 17 is an enlarged perspective view of only the spacer and the blade member on the upper side a (lower side b) in FIG. 16 extracted from a rotating device according to a third embodiment which is one example of the present invention. FIG. [Figure 18] 18 is a cross-sectional perspective view taken along the cross section BB including the axis x in FIG. 17. [Figure 19] 13 is an exploded perspective view showing only a spacer and a blade member extracted from a rotating device according to a third embodiment which is one example of the present invention. FIG. [Figure 20] FIG. 11 is a perspective view showing only a rotor blade extracted from a rotating device according to a third embodiment which is one example of the present invention. [Figure 21] FIG. 11 is an exploded perspective view showing only a rotor blade extracted from a rotating device according to a third embodiment which is one example of the present invention. [Figure 22] FIG. 13 is an enlarged perspective cross-sectional view of a rotating device according to a modified example of the present invention. [Figure 23] FIG. 13 is an enlarged perspective cross-sectional view of a rotating device according to a modified example of the present invention. [Figure 24] FIG. 13 is an enlarged perspective cross-sectional view of a rotating device according to a modified example of the present invention. [Diagram 25] FIG. 11 is an enlarged cross-sectional view of a rotating device according to a modified example of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] Hereinafter, a rotating device according to an embodiment of the present invention will be described with reference to the drawings. Note that in the following embodiment, a so-called blower (or suction device) that generates air for the purpose of blowing (or suctioning) air will be described as an example of the rotating device.

[0017] [First embodiment] Fig. 1 is a cross-sectional view of a rotating device 1 according to a first embodiment which is an example of the present invention, and Fig. 2 is a see-through cross-sectional view of a cross section (cross section AA in Fig. 1) including an axis x of the rotating device 1. In Figs. 1 and 2, a housing 7 is shown in a see-through state by being drawn with imaginary lines (two-dot chain lines).

[0018] In the description of the first embodiment and the second embodiment described later, the terms "upper" and "lower" refer to the upper and lower positions in Figs. 1 and 2 and do not necessarily correspond to the upper and lower positions in the direction of gravity. In addition, in the direction of axis x (hereinafter also referred to as "axial direction"), the direction of arrow a is the upper side a, and the direction of arrow b is the lower side b. Furthermore, in the direction perpendicular to axis x (hereinafter also referred to as "radial direction"), the direction away from axis x (arrow c direction) is the outer circumferential side c, the direction toward axis x (arrow d direction) is the inner circumferential side d, and both of these directions are radial directions cd. The clockwise circumferential direction (the circumferential direction as seen from the upper side a) around axis x is the circumferential direction e, and the counterclockwise circumferential direction f. The arrows a to f indicating these directions and x indicating the axis are the same in the description of the second embodiment described later.

[0019] In addition, in the description of this embodiment, the part that rotates in the rotating device 1 may be referred to as the "rotating side", and the part that supports the member of the rotating side and is fixed without rotating itself may be referred to as the "fixed side". In addition, since the fixed part that does not rotate itself is stationary relative to the rotating part, the fixed part that does not rotate itself may be referred to as the stationary part. These names are the same in the description of the second embodiment described later.

[0020] The rotating device 1 of this embodiment is an outer rotor type rotating device that includes a shaft member 5, a rotor 3 which is a cylindrical rotating body rotatable about the shaft member 5, a cylindrical housing 7 surrounding the rotor 3, a bearing 4 which supports the rotor 3 rotatably about the shaft member 5, connecting members 81, 82 which are disposed between the rotor 3 and the bearing 4 and connect the two together, a stator 2 inside the rotor 3, and a plurality of rotor blades 6 provided on the rotor 3.

[0021] The stator 2 includes a stator core 21 that is fixed to the shaft member 5 and has a plurality of magnetic pole portions 23 that extend radially outward from the shaft member 5 as an axis, and a coil 22 that is wound around the magnetic pole portions 23. The illustrated stator 2 is disposed within a housing 7 such that the gap between a first bearing 41 and the stator 2 and the gap between a second bearing 42 and the stator 2 are equal.

[0022] In addition, the stator core 21 is a laminated body made of magnetic materials such as silicon steel plates, and is provided with an annular portion 24 arranged coaxially so as to surround the shaft member 5, and a plurality of magnetic pole portions 23 formed to extend radially from the annular portion 24 toward the outer periphery.

[0023] The rotor 3 includes a magnet 31 facing the magnetic pole portion 23 on the outer circumferential side of the stator 2, and a cylindrical tubular member 32. The magnet 31 is disposed on the inner circumferential surface of the tubular member 32. The tubular member 32 is cylindrical and centered on the axis of the shaft member 5, and surrounds the stator 2. The tubular member 32 also has a function of preventing leakage of a magnetic field from inside the tubular member 32, and is made of a magnetic material. The tubular member 32 may be made of a non-magnetic material such as aluminum or plastic, as long as there are no problems with the characteristics.

[0024] The magnet 31 is attached to the inner circumferential surface of the cylindrical member 32 so as to face the stator 2. The magnet 31 has an annular shape, with regions magnetized to the N pole and regions magnetized to the S pole alternately provided at a constant period (or at constant intervals) along the circumferential direction. The magnet 31 may be an annular integral molding, but multiple magnets may also be attached side by side to the inner circumferential surface of the cylindrical member 32 and arranged in a cylindrical shape.

[0025] The bearings 4 are arranged on both sides of the stator 2 in the axial direction of the shaft member 5, and include two bearings: a first bearing 41 located on the upper side a and a second bearing 42 located on the lower side b. That is, the magnet 31 and the stator 2 are located between the first bearing 41 and the second bearing 42 in the axial direction of the shaft member 5. The first bearing 41 and the second bearing 42 use members of the same configuration (same shape, structure, size, and material).

[0026] The first bearing 41 is a so-called ball bearing, which includes an outer ring 41a, an inner ring 41b, and a bearing ball 41c interposed between the outer ring 41a and the inner ring 41b. The bearing ball 41c rolls between the outer ring 41a and the inner ring 41b, so that the rotational resistance of the outer ring 41a relative to the inner ring 41b is significantly reduced. Due to its function, the first bearing 41 is formed of a member such as a hard metal such as iron or a ceramic. The above is the same for the second bearing 42.

[0027] A connecting member (hereinafter referred to as the "inner impeller") 81 is disposed between the outer ring 41a of the first bearing 41 and the inner peripheral surface of the end of the upper side a of the tubular member 32. Fig. 3 shows an enlarged perspective view of only the inner impeller 81. As shown in Fig. 3, the inner impeller 81 has an inner ring portion (hereinafter referred to as the "inner ring portion") 81a, an outer ring portion (hereinafter referred to as the "outer ring portion") 81b, and a plurality of blades 81c (three in this embodiment) that connect between the inner ring portion 81a and the outer ring portion 81b.

[0028] In the inner impeller 81, gas can pass between the inner ring portion 81a and the outer ring portion 81b except for the position of the blades 81c. That is, the inner impeller 81 has an air passage 81d. The inner impeller 81 may be made of any material, such as resin, aluminum, or other various metals, but is preferably made of resin from the standpoints of weight reduction, cost reduction, and moldability.

[0029] 3, the blades 81c are inclined with respect to the axis x (the axial direction of the shaft member 5). Three blades 81c are inclined at the same angle. Therefore, the inner impeller 81 functions as a so-called fan that generates a gas flow in the axis x by rotating.

[0030] Meanwhile, a connecting member (hereinafter referred to as "spacer") 82 is disposed between the outer ring 42a of the second bearing 42 and the inner peripheral surface of the end portion of the lower side b of the tubular member 32. Fig. 4 shows an enlarged perspective view of only the spacer 82. As shown in Fig. 4, the spacer 82 has an inner ring portion (hereinafter referred to as "inner ring portion") 82a, an outer ring portion (hereinafter referred to as "outer ring portion") 82b, and a plurality of (three in this embodiment) plate-shaped spokes 82c connecting between the inner ring portion 82a and the outer ring portion 82b.

[0031] In the spacer 82, a space between the inner ring portion 82a and the outer ring portion 82b is an air passage 82d through which gas can pass, except at the positions of the spokes 82c. The spacer 82 may be made of any material, such as resin, aluminum, or any other type of metal, but is preferably made of resin from the standpoints of weight reduction, cost reduction, and moldability.

[0032] As shown in FIG. 4, in the spacer 82, unlike the plurality of blades 81c of the inner impeller 81, the side surface (plate surface) of the plurality of spokes 82c facing the stator 2 side is not inclined with respect to the axis x direction.

[0033] The inner peripheral surface of the inner ring portion 81a of the inner impeller 81 is fixed to the outer peripheral surface of the outer ring 41a of the first bearing 41. On the other hand, the inner peripheral surface of the inner ring portion 82a of the spacer 82 is fixed to the outer peripheral surface of the outer ring 42a of the second bearing 42. There are no particular limitations on the method of fixing the inner peripheral surfaces of the inner ring portions 81a, 82a to the outer peripheral surfaces of the outer rings 41a, 42a, and the fixing may be performed by a conventionally known method, such as press fitting, interference fitting, fixing with an adhesive, engagement, or the like, or a combination of a plurality of these fixing means (fixing elements).

[0034] FIG. 5 is an exploded perspective view showing only the stator core 21, the bearing 4, the inner impeller 81, and the spacer 82 in the rotating device 1 according to this embodiment. The inner ring portion 81a of the inner impeller 81 is fixed to the outer ring 41a of the first bearing 41. Also, the inner ring portion 82a of the spacer 82 is fixed to the outer ring 42a of the second bearing .

[0035] 5, only the stator core 21 is illustrated with the coils 22 omitted, but in reality, the stator 2 is prepared in which the coils 22 are wound around the magnetic pole portions 23 of the stator core 21. As shown in FIG. 5, the set of the first bearing 41 and the inner impeller 81, the stator 2, and the second bearing 42 and the spacer 82 are arranged in this order, and the shaft member 5 is inserted and fitted onto the central axis x.

[0036] The inner ring 41b of the first bearing 41 and the inner ring 42b of the second bearing 42 are loosely fitted onto the shaft member 5 and then fixed with an adhesive. Thus, adhesive is filled in the gaps between the inner ring 41b and the shaft member 5 and between the inner ring 42b and the shaft member 5. Alternatively, the inner ring 41b of the first bearing 41 and the inner ring 42b of the second bearing 42 may be press-fitted into the shaft member 5 and fixed thereto.

[0037] As described above, the inner ring 41b of the first bearing 41 and the inner ring 42b of the second bearing are fixed to the shaft member 5 and form a stationary part together with the shaft member 5. Here, the shaft member 5 and the housing 7 are members that are stationary (relative to) the rotor 3. Therefore, these are collectively referred to as a stationary member (stationary part).

[0038] On the other hand, the outer peripheral surface of the outer ring portion 81b of the inner impeller 81 is fixed to the inner peripheral surface of the end portion of the upper side a of the cylindrical member 32. Moreover, the outer peripheral surface of the outer ring portion 82b of the spacer 82 is fixed to the inner peripheral surface of the end portion of the lower side b of the cylindrical member 32. There are no particular limitations on the method of fixing the outer peripheral surfaces of the outer ring portions 81b, 82b to the inner peripheral surface of the cylindrical member 32, and the fixing may be performed by a conventionally known method, such as press fitting, interference fitting, fixing with an adhesive, engagement, or a combination of a plurality of these fixing means (fixing elements).

[0039] Therefore, the inner ring 41b of the first bearing 41 and the inner ring 42b of the second bearing 42 are fixed to the outer peripheral surface of the shaft member 5, and the outer ring 41a of the first bearing 41 and the outer ring 42a of the second bearing 42 are fixed to the inner peripheral surfaces of both ends of the cylindrical member 32 via the inner impeller 81 and the spacer 82. As a result, the rotor 3 is configured to be rotatable around the axis x of the shaft member 5 as a central axis.

[0040] The shaft member 5 is made of, for example, aluminum and is hollow (more specifically, cylindrical) in order to reduce weight. In this embodiment, the shaft member 5 is a fixed member. Since the shaft member 5 is a member having a function of supporting the stator 2, the rotor 3, the bearings 4, and the rotor blades 6 relative to the housing 7, it is required to have rigidity according to this function.

[0041] An opening (not shown) is provided in the middle (intermediate portion) of the shaft member 5, and a lead wire (not shown) connected to the coil 22 is pulled into a cavity inside the shaft member 5 from the opening and is pulled out to the outside of the rotating device 1 from an end opening (not shown) of the shaft member 5. In the rotating device 1 according to this embodiment, the cylindrical member 32 has an isolated internal space due to the presence of the first bearing 41, the second bearing 42, the inner impeller 81, and the spacer 82 at both ends thereof. Power must be supplied to the coil 22 of the stator 2 located within the isolated internal space of the cylindrical member 32. Note that "isolated" here refers to a state in which, at first glance, there is no place where a lead wire for supplying power can be wired from the outside to the inside.

[0042] In the rotating device 1 according to this embodiment, the inside and outside of the internal space of the isolated cylindrical member 32 are electrically connected to each other by passing a lead wire through the hollow space inside the shaft member 5. Therefore, it is possible to supply power to the coil 22 of the stator 2 located inside the internal space of the cylindrical member 32 by the lead wire.

[0043] Among the multiple components of the rotating device 1 configured as above, some of the components (the stator 2, the rotor 3, the bearing 4, the inner impeller 81, the spacer 82, and the shaft member 5) form a rotation mechanism that rotates the rotor blades. Furthermore, among these components, the rotor 3 surrounding the stator 2 is rotatable relative to the stator 2 fixed to the shaft member 5, and so-called an outer rotor type brushless motor is configured. In a typical outer rotor type brushless motor, the shaft member fixed to the rotor rotates, and a rotational force is taken out by the shaft member, but in the rotating device 1 according to this embodiment, the shaft member 5 is a fixed member, and the rotational force is taken out directly from the rotor 3.

[0044] The housing 7 is a member having a cylindrical shape, and is made of, for example, plastic or metal, etc. Although not shown, both axial ends of the housing 7 are openings (hereinafter, the opening on the upper side a is referred to as the "upper end opening" and the opening on the lower side b is referred to as the "lower end opening").

[0045] Some of the components of the rotating device 1 are accommodated inside the housing 7, and the shaft member 5 is fixed to the upper and lower ends of the housing 7. The upper and lower ends of the housing 7 each have three spoke portions 71a continuing from a cylindrical main body portion (cylindrical portion 72) of the housing 7 and a disk portion 71b to which the spoke portions 71a are connected, and the shaft member 5 is fixed to the disk portion 71b. The housing 7 and the shaft member 5 constitute a fixed member. An upper end opening 75 and a lower end opening 76 are provided at the upper and lower ends of the housing 7, and the upper end opening 75 and the lower end opening 76 surround the disk portion 71b and the shaft member 5, respectively.

[0046] The rotor 3 has rotor blades 6 attached to an outer circumferential surface of the cylindrical member 32, over substantially the entire axial direction (axis x direction) of the cylindrical member 32. The rotor blades 6 will be described with reference to FIGS. FIG. 6 is a perspective view of only the rotor blade 6 extracted from the rotating device 1 according to this embodiment, and FIG. 7 is a perspective view of the rotor blade 6 as viewed from the axially upper side a.

[0047] The rotor blade 6 includes an inner cylinder 61 attached to the outer circumferential surface of the tubular member 32, an outer cylinder 63 facing the inner circumferential surface of the housing 7 at a distance, and a plurality of (five in this embodiment) blades 62 arranged between the inner cylinder 61 and the outer cylinder 63. A cavity 64 is formed between the inner cylinder 61 and the outer cylinder 63, and the blades 62 arranged in the cavity connect the inner cylinder 61 and the outer cylinder 63. Therefore, the inner cylinder 61, the blades 62, and the outer cylinder 63 form an integrated rotor blade 6.

[0048] The blades 62 are oriented in a direction inclined with respect to the direction of the axis x of the shaft member 5. The five blades 62 are arranged at equal intervals in the circumferential direction ef and are inclined at the same angle. The rotor blades 6 are attached to the outer peripheral surface of the tubular member 32 by inserting the tubular member 32 of the rotor 3 into the inner peripheral portion (inner hole) of the inner cylinder 61 and fixing it at a predetermined position with an adhesive or the like. Therefore, the rotor blades 6 rotate within the housing 7 as the rotor 3 rotates.

[0049] The moving blades 6 rotate with the rotation of the rotor 3, and therefore rotate together with the rotor 3, and a gas flow in the direction of the axis x occurs in response to the rotation of the moving blades 6. This air flow occurs in a cavity 64 between the inner cylinder 61 and the outer cylinder 63 in either the upward or downward direction in the axial direction of the shaft member 5. In the rotating device 1 of this embodiment, the rotating device 1 is driven to rotate the moving blades 6 in the clockwise circumferential direction e, so that air taken in from the lower end opening 76 passes through the cavity 64 and is blown out from the upper end opening 75.

[0050] The rotating device 1 according to this embodiment is configured such that the rotor 3, which is a rotating body, is provided with the rotor blades 6 on the outer circumferential surface thereof, and a cylindrical housing 7 is provided to surround the rotor blades 6. One of the openings at both ends of the housing 7 serves as an intake port, and the other serves as an exhaust port. The rotating mechanism (part of the multiple components of the rotating device 1) that rotates the rotor blades 6 and the rotor blades 6 can be housed in the internal space of the housing 7. In addition, one of the inner impeller 81 and the spacer 82 can serve as an intake port, and the other serves as an exhaust port. In particular, the rotor blades 6 are located in a flow path (sometimes called an "air passage") through which air flows, which can save space and realize the miniaturization of the entire rotating device.

[0051] In the rotating device 1 according to this embodiment, the space communicating from the upper end opening 75 to the lower end opening 76 is hollow so that the air flow is not obstructed by members other than the spoke portions 71a. Furthermore, the space is straight except for the space occupied by the cylindrical motor, so that the air flows in a straight line. Therefore, by rotating the rotor blades 6, the air can be sent out straight from the upper end opening to the lower end opening. Therefore, according to the rotating device 1 according to this embodiment, the air can be efficiently sent out, and a strong wind and a large air volume (large suction volume) can be supplied.

[0052] Furthermore, in a rotating device having a conventional motor configuration in which a rotating shaft member protrudes from the motor, one side of the shaft member is supported while rotating and rotational force is extracted from the other protruding end, which can easily cause rotational fluctuations. However, in the rotating device 1 of this embodiment, the rotor 3 supported by the bearings 4 itself rotates as a rotating body, and therefore the rotation of the rotor 3 is stable.

[0053] Furthermore, in the rotating device 1 according to this embodiment, the first bearing 41 and the second bearing 42 are fixed to both ends of the rotor 3, respectively, to support the rotor 3 as a rotating body, so that the rotation of the rotor 3 is stabilized with respect to the shaft member 5. In particular, the magnet 31, which is a component of the rotor 3 as a rotating body and has a predetermined weight, is located in the axial direction of the shaft member 5 between the first bearing 41 and the second bearing 42 that rotatably support the rotor 3, so that balance in the axial direction is improved and the rotation of the rotor 3 is stabilized.

[0054] It is more preferable that the bearings are located at both ends of the rotor as in this embodiment, but if the bearings are located near both ends of the rotor, the rotation of the rotor relative to the shaft member will be sufficiently stable. The term "near" here means a position between both ends and the center of the rotor and near both ends of the rotor, and cannot be clearly defined numerically, but for example, a region that is 20% of the length from both ends of the rotor in the axial direction, and preferably a region that is 10% of the length from both ends, is included in the concept of "near both ends."

[0055] In addition, in the rotating device 1 according to this embodiment, the first bearing 41 and the second bearing 42 are members of the same configuration, and therefore the axial balance of the rotating portion including the outer rings 41a, 42a, which are part of the bearing 4, and the rotor 3 is improved. That is, in the rotating device 1 according to this embodiment, the axial balance of the rotating device 1 as a whole is improved, and from this viewpoint as well, the rotation of the rotor 3 is stabilized.

[0056] As described above, the rotating device 1 according to this embodiment can realize a reduction in size of the entire device, and can achieve high-precision stabilization with little fluctuation in the rotation of the rotor 3. Furthermore, stabilizing the rotation of the rotor 3 means that rotational irregularities are less likely to occur, which can achieve high rotation speeds and high torque for the rotating device 1. That is, the rotating device 1 according to this embodiment can provide a rotating device that is excellent in characteristics while being compact. In this embodiment, a configuration in which both the upper and lower ends of the shaft member 5 are fixed to the housing 7 is given as an example, but it is sufficient that the fixed side shaft member 5 is fixed to the housing 7 in some way, so it is sufficient that at least one end or a portion of the shaft member 5 is fixed to the housing.

[0057] As described above, the rotating device 1 of the present embodiment can achieve high performance with a small size. However, due to the high performance, the coil 22 and the stator core 21 are likely to become even hotter due to, for example, high speed rotation. Therefore, it is required to cool the stator 2 including heat generation sources such as the coil 22 and the stator core 21. However, it may be difficult to ensure sufficient cooling performance by simply providing a vent hole for this purpose in the cylindrical member 32. In addition, it is difficult to secure a place for providing the vent hole in the first place. If a vent hole is provided in the cylindrical member 32 in order to cool the stator 2, a place for providing the vent hole must be secured, which may be an obstacle to miniaturization of the rotating device 1.

[0058] In contrast, in this embodiment, a connecting member (inner impeller 81 and spacer 82) having an air passage connecting the inside and outside of the rotor 3 is arranged between the bearing 4 and the rotor 3, thereby achieving efficient cooling of the stator 2. Fig. 8 is an explanatory diagram illustrating the flow of gas that cools the inside of the rotor 3 in the rotating device 1 according to this embodiment. In Fig. 8, the housing 7 is omitted.

[0059] As described above, an airflow is generated by the action of the rotor blades 6 such that the gas taken in from the lower end opening 76 passes through the cavity 64 and is blown out from the upper end opening 75. Therefore, an airflow toward the upper side a is generated below the lower end opening 76 and above the upper end opening 75, and thus, guided by this airflow, gas flows in and out of the rotor 3 in the air passages of the inner impeller 81 and the spacer 82 as well, generating an airflow toward the upper side a.

[0060] 8 in the direction of the arrow h (clockwise direction e), the inner impeller 81 rotates, and the vanes 81c strengthen the airflow in the upper direction a within the cavity 64. As a result, a strong airflow is generated in the direction of the arrow g in FIG. 8, and the stator 2 including heat generation sources such as the coil 22 and the stator core 21 within the tubular member 32 of the rotor 3 is efficiently cooled by the airflow.

[0061] In particular, since the connecting member of the upper end opening 75 on the gas discharge port side is the inner impeller 81 having the blades 81c, a large amount of gas can be taken into and discharged from the rotor 3. Therefore, according to the rotating device 1 of this embodiment, the heat generation sources such as the coil 22 and the stator core 21 can be cooled extremely efficiently.

[0062] As shown by the arrow g in Fig. 8, the airflow path from the spacer 82 to the inner impeller 81 includes only the coil 22, the stator core 21, and the magnet 31, and there are no obstacles to the airflow other than these objects to be cooled, so that the gas is efficiently supplied to these objects to be cooled. Furthermore, the gas flows along the axial direction x except when it comes into contact with these objects to be cooled. Therefore, according to the rotating device 1 of this embodiment, the gas for cooling can be efficiently supplied to the objects to be cooled.

[0063] In addition, in this embodiment, since the connecting members (the inner impeller 81 and the spacer 82) having an air passage that communicates the inside and outside of the rotor 3 are disposed between the bearing 4 and the rotor 3, it is not necessary to provide the tubular member 32 with an air hole for taking in and discharging gas. In other words, since the connecting members having an air passage can be disposed without increasing the length in the direction of the axis x, the rotating device 1 can be made compact.

[0064] In particular, when an air vent is provided on the circumferential surface (side surface) of the tubular member 32 (and further, the inner cylinder 61 of the rotor blade 6), it is desirable to dispose the inner impeller near the air vent. In that case, the length in the direction of the axis x must be extended, which increases the axial length of the entire rotating device. However, in this embodiment, it is possible to prevent the axial length of the entire rotating device from increasing.

[0065] Furthermore, if an air vent were provided on the peripheral surface of the tubular member 32 (and furthermore, the inner cylinder 61 of the rotor blades 6), gas would be taken in from the airflow caused by the rotor blades 6 in the cavity 64 and returned to the airflow, which would lead to disturbance of the airflow in the cavity 64. However, in this embodiment, the intake port (spacer 82) and exhaust port (inner impeller 81) for the cooling gas are independent of the airflow caused by the rotor blades 6 in the cavity 64, so disturbance of the airflow caused by the rotor blades 6 can be prevented, and it is possible to realize the supply of strong wind and large air volume (large suction volume) as a blower (or suction device).

[0066] In this embodiment, the connecting member on the upper side a, which is the gas discharge port side, is the inner impeller 81 having the blades 81c, but the connecting member on the lower side b, which is the gas intake side, may also be an inner impeller having the blades 81c, or the connecting member on the upper side a, which is the gas discharge port side, may be replaced with a spacer, and the connecting member on the lower side b, which is the intake side, may be replaced with an inner impeller. By making at least one of the discharge port side and the intake side an inner impeller, a large amount of gas can be taken in to the rotor 3, and the cooling efficiency can be further improved. In particular, as in this embodiment, the inner impeller 81 having the blades 81c is provided as the connecting member, so that gas can be caused to flow to the stator 2 inside the rotor 3 through the connecting member to cool the stator 2, or the amount of air discharged from the rotating device 1 can be increased.

[0067] The rotor blade 6 includes an inner cylinder 61 attached to the outer circumferential surface of the cylindrical member 32, an outer cylinder 63, and a plurality of blades 62 arranged between the inner cylinder 61 and the outer cylinder 63 and connecting the inner cylinder 61 and the outer cylinder 63. Since the rotor blade includes the outer cylinder 63 surrounding the plurality of blades 62, it becomes possible to efficiently blow gas from the rotating device 1. Therefore, gas can be blown even if a housing 7 for accommodating the rotor blade 6 is not provided.

[0068] [Second embodiment] A rotating device according to a second embodiment, which is an example of the present invention, will be described. Fig. 9 is a transparent cross-sectional view of a cross section including an axis x of a rotating device 201 according to the second embodiment. The rotating device 201 according to the second embodiment differs from the rotating device 1 according to the first embodiment in the configuration around the upper and lower bearings and the structure of the rotor blades.

[0069] In the second embodiment, components and parts having the same functions and structures as those in the first embodiment will be given the same symbols as those in the first embodiment in each drawing of this embodiment, and detailed descriptions thereof will be omitted (however, this is not limited to cases where a special explanation has been added).

[0070] A connecting member (hereinafter referred to as a "spacer") 281 is disposed between the outer ring 41a of the first bearing 41 and the inner peripheral surface of the end portion of the upper side a of the cylindrical member 32, and a connecting member (hereinafter referred to as a "spacer") 282 is also disposed between the outer ring 42a of the second bearing 42 and the inner peripheral surface of the end portion of the lower side b of the cylindrical member 32. These spacers 281, 282 have the same shape as the spacer 82 in the first embodiment.

[0071] The rotating device 201 according to this embodiment includes a blade member 291 having a plurality of blades (reference numeral 291b to be described later) adjacent to the outer side (upper side a) of the spacer 281 in the direction of the axis x. The rotating device 201 according to this embodiment also includes a blade member 292 having a plurality of blades (reference numeral 292b to be described later) adjacent to the outer side (lower side b) of the spacer 282 in the direction of the axis x.

[0072] Fig. 10 shows an enlarged perspective view of only blade member 291 on upper side a in Fig. 9 extracted from rotating device 201. As shown in Fig. 10, blade member 291 has ring portion 291a, multiple (six in this embodiment) blades 291b extending in the central axis direction from ring portion 291a, and protrusions 291c protruding downward from the connection side of each of blades 291b with ring portion 291a.

[0073] Fig. 11 shows an enlarged perspective view of only blade member 292 on the lower side b in Fig. 9 extracted from rotating device 201. As shown in Fig. 11, blade member 292 has ring portion 292a, multiple (six in this embodiment) blades 292b extending in the central axis direction from ring portion 292a, and protrusions 292c protruding downward from the connection portions of blades 292b and ring portion 292a.

[0074] Although the blade member 291 and the blade member 292 are arranged upside down, they are essentially members of the same shape and the same configuration. The blade members 291, 292 may be made of any material such as resin, aluminum, or other various metals, but from the standpoints of weight reduction, cost reduction, and moldability, it is preferable to make them from resin.

[0075] 10 and 11, the blades 291b, 292b are inclined with respect to the axis x (axial direction of the shaft member 5). The six blades 291b, 292b are inclined at the same angle. Therefore, the blade members 291, 292 function as a so-called fan that generates a gas flow in the axis x by rotating.

[0076] Fig. 12 shows an enlarged perspective view of only spacer 281 and blade member 291 on upper side a in Fig. 9 extracted from rotating device 201. Spacer 282 and blade member 292 on lower side b in Fig. 9 have the same shape and structure except that they are inverted upside down, so in Fig. 12 they are also given the reference numerals in parentheses as spacer 282 and blade member 292.

[0077] 13 is an exploded perspective view of a rotating device 201 according to this embodiment. In FIG. 13, the housing 7 is omitted. As shown in FIGS. 12 and 13, the blade members 291, 292 are overlapped with the spacers 281, 282 such that the protruding portions 291c, 292c face the spacers 281, 282.

[0078] The spacers 281, 282 have inner ring portions (hereinafter referred to as the "inner ring portions") 281a, 282a, outer ring portions (hereinafter referred to as the "outer ring portions") 281b, 282b, and multiple (three in this embodiment) plate-shaped spokes 281c, 282c connecting between the inner ring portions 281a, 282a and the outer ring portions 281b, 282b. The spacers 281 and 282 have a simple holed shape so that the precision and strength required as a connecting member can be easily and at low cost.

[0079] The inner peripheral surface of the inner ring portion 281a of the spacer 281 is fixed to the outer peripheral surface of the outer ring 41a of the first bearing 41. Moreover, the inner peripheral surface of the inner ring portion 282a of the spacer 282 is fixed to the outer peripheral surface of the outer ring 42a of the second bearing 42. There are no particular limitations on how the inner peripheral surfaces of the inner ring portions 281a, 282a are fixed to the outer peripheral surfaces of the outer rings 41a, 42a, and the fixing may be performed by a conventionally known method, such as press fitting, interference fitting, fixing with an adhesive, engagement, or a combination of a plurality of these fixing means (fixing elements).

[0080] Furthermore, the outer peripheral surfaces of the outer ring portions 281b, 282b of the spacers 281, 282 are fixed to the inner peripheral surfaces of the ends on both upper and lower sides ab in the direction of the axis x of the cylindrical member 32. There are no particular limitations on the method of fixing the outer peripheral surfaces of the outer ring portions 281b, 282b to the inner peripheral surface of the cylindrical member 32, and the fixing may be performed by a conventionally known method, such as press fitting, interference fitting, fixing with an adhesive, engagement, or a combination of a plurality of these fixing means (fixing elements).

[0081] In the spacers 281 and 282, the inner ring parts 281a and 282a and the outer ring parts 281b and 282b have through-holes 281d and 282d between them except for the positions of the spokes 281c and 282c, forming air passages through which gas can pass. The spokes 281c and 282c are connected to the inner ring parts 281a and 282a and the outer ring parts 281b and 282b at approximately the center in the thickness direction (axis x direction) of the spacers 281 and 282. Therefore, in the spacers 281 and 282, the positions of the spokes 281c and 282c are located inside the end faces of the inner ring parts 281a and 282a and the outer ring parts 281b and 282b on the stator 2 side. These spokes 281c, 282c, the inner ring portions 281a, 282a and the outer ring portions 281b, 282b form a stepped portion recessed in the direction of the axis x.

[0082] Protruding portions 291c, 292c of blade members 291, 292 fit into through-holes and stepped portions of spacers 281, 282, and are integrated as shown in Fig. 12. A leaf spring 250 is attached near the end of upper side a of shaft member 5, and biases blade member 291 and bearing 41 from upper side a. The biasing force of leaf spring 250 ensures that blade member 291 and spacer 281 are stably integrated. Furthermore, a leaf spring 251 is attached near the end of the lower side b of the shaft member 5, and biases the blade members 292 and the bearings 42 from the lower side b. The biasing force of the leaf spring 251 ensures that the blade members 292 and the spacer 282 are stably integrated together.

[0083] As described above, the spacers 281 and 282 are fixed to the inner circumferential surface of the cylindrical member 32 of the rotor 3. Therefore, the blade members 291, 292 fixed to the cylindrical member 32 of the rotor 3 via the spacers 281, 282 are adapted to rotate in conjunction with the rotation of the rotor 3.

[0084] Next, the rotor blade 206 will be described with reference to FIG. Fig. 14 is a perspective view of a rotating device 201 according to this embodiment, with only the housing 7 removed. As shown in Fig. 14, rotor blades 206 are attached to the outer circumferential surface of a cylindrical member 32 of a rotor 3, over about 70% of the length of the cylindrical member 32 in the axial direction (axis x direction).

[0085] The rotor blade 206 comprises three annular fixed portions 261a, 261b, 261c attached to the outer peripheral surface of the cylindrical member 32 and arranged at equal intervals in the direction of the axis x, and a plurality of (six in this embodiment) blades 262 fixed obliquely to the direction of the axis x so as to bridge the three fixed portions 261a, 261b, 261c.

[0086] The blades 262 are oriented in a direction inclined with respect to the direction of the axis x of the shaft member 5. The six blades 262 are arranged at equal intervals in the circumferential direction ef and are inclined at the same angle. The rotor blades 206 are attached to the outer circumferential surface of the cylindrical member 32 by inserting and fitting the cylindrical member 32 of the rotor 3 into the ring of the three fixing parts 261a, 261b, and 261c and fixing them at a predetermined position with an adhesive or the like. Therefore, the rotor blades 206 rotate within the housing 7 as the rotor 3 rotates.

[0087] The moving blades 206 rotate with the rotation of the rotor 3, and therefore rotate together with the rotor 3, and a flow of gas in the direction of the axis x is generated in response to the rotation of the moving blades 206. This air flow is generated in a cavity 277 between the rotor 3 and the housing 7 in either the upward or downward direction in the axial direction of the shaft member 5. In the rotating device 201 of this embodiment, the rotating device 201 is driven to rotate the moving blades 206 in the clockwise circumferential direction e, so that gas taken in from the lower end opening 76 passes through the cavity 277 and is blown out from the upper end opening 75.

[0088] Like the first embodiment, the rotating device 201 of this embodiment can achieve a compact overall rotating device, supply of strong wind and large air volume (large suction volume), stabilization of the rotation of the rotor 3, high rotation speed and high torque, and can provide a rotating device with excellent characteristics.

[0089] In this embodiment as well, efficient cooling of the stator 2 is achieved by disposing a connecting member (spacers 281, 282) between the bearing 4 and the rotor 3, the connecting member having an air passage connecting the inside and outside of the rotor 3. FIG. 15 is an explanatory diagram illustrating the flow of gas that cools the inside of the rotor 3 in the rotating device 201 according to this embodiment.

[0090] As described above, the action of the rotor blades 206 generates an airflow in which air taken in from the lower end opening 76 passes through the cavity 277 and is blown out from the upper end opening 75. Therefore, an airflow toward the upper side a is generated below the lower end opening 76 and above the upper end opening 75, and gas flows in and out of the rotor 3 in the air passages of the spacers 281, 282, guided by the airflow, and an airflow toward the upper side a is generated.

[0091] 15 in the direction of arrow h (clockwise direction e), the blade members 291, 292 rotate, and the blades 291b, 292b strengthen the airflow toward the upper side a in the tubular member 32. As a result, a strong airflow is generated in the direction of arrow g in FIG. 15, and the stator 2 including heat generation sources such as the coil 22 and the stator core 21 in the tubular member 32 of the rotor 3 is efficiently cooled by the airflow.

[0092] In particular, since the blade members 291, 292 having the blades 291b, 292b are provided on both sides of the upper end opening 75 and the lower end opening 76, a large amount of gas can be taken in and discharged from the rotor 3. Therefore, according to the rotating device 201 of the present embodiment, the heat generation sources such as the coil 22 and the stator core 21 can be cooled extremely efficiently.

[0093] As shown by the arrow g in Fig. 15, the airflow path from the spacer 282 to the spacer 281 includes the coil 22, the stator core 21, and the magnet 31, and there is nothing to obstruct the airflow other than these objects to be cooled, so that the gas is efficiently supplied to these objects to be cooled. Furthermore, the gas flows along the axial direction x except when it comes into contact with these objects to be cooled. Therefore, according to the rotating device 201 of this embodiment, the gas for cooling can be efficiently supplied to the objects to be cooled.

[0094] In addition, in this embodiment, since the connecting members (spacers 281, 282) having an air passage that communicates the inside and outside of the rotor 3 are disposed between the bearing 4 and the rotor 3, it is not necessary to provide an air hole for taking in and discharging gas in the cylindrical member 32. In other words, since the connecting members having an air passage can be disposed without increasing the length in the direction of the axis x, the rotating device 201 can be made smaller.

[0095] Furthermore, if an air vent were provided on the circumferential surface of the tubular member 32, gas would be taken in from the airflow caused by the rotor blades 206 in the cavity 277 and returned to the airflow, which would lead to disturbance of the airflow in the cavity 277. However, in this embodiment, the intake port (blade member 292 and spacer 282) and exhaust port (spacer 281 and blade member 291) for the cooling gas are independent of the airflow caused by the rotor blades 6 in the cavity 277, so disturbance of the airflow caused by the rotor blades 6 can be prevented, and it is possible to realize the supply of strong wind and large air volume (large suction volume) as a blower (or suction device).

[0096] In this embodiment, an example is given in which the blade members 291, 292 having the blades 291b, 292b are provided adjacent to both of the two connecting members (spacers 281, 282), but by providing a blade member on at least one of the exhaust port side and the intake port side, a large amount of gas can be taken into the rotor 3, and the cooling efficiency can be further improved. A blade member having blades may be provided on the exhaust port side to increase the amount of air blown from the rotating device and to increase the wind pressure.

[0097] As the rotor blade 206 has annular fixing portions 261a, 261b, and 261c, the area (surface area) of contact with the rotor (rotating body) 3 can be reduced, and as a result, the area (surface area) of the outer peripheral side of the rotor 3 exposed to gas can be increased, thereby improving the heat dissipation properties of the rotor 3.

[0098] In this embodiment, unlike the first embodiment in which the connecting member itself is the inner impeller 81, the connecting member (spacers 281, 282) and the blade members 291, 292 that generate an airflow inside the tubular member 32 are separated. Therefore, in this embodiment, there is a high degree of freedom in the shape of the connecting member, and compared to the first embodiment, the cross-sectional area of ​​the air passage in the connecting member can be increased, and the strength of the connecting member can be improved. In addition, since there is a high degree of freedom in the shape of the connecting member, restrictions on the size of the bearing 4 are significantly alleviated.

[0099] Since the rotating device can be assembled without the blade members and shaped in that state, it is possible to prepare multiple types of blade members with different shapes, sizes, thicknesses, etc. according to the application or purpose and select from these each time. In other words, by mass-producing rotating devices without the blade members and combining them with blade members according to the application or purpose as appropriate, a wide range of needs can be met and it is also extremely advantageous in terms of cost.

[0100] [Third embodiment] A rotating device according to a third embodiment, which is one example of the present invention, will be described. Fig. 16 is a transparent cross-sectional view of a cross section including an axis x of a rotating device 301 according to the third embodiment. The rotating device 301 according to the third embodiment differs from the rotating device 1 according to the first embodiment and the rotating device 201 according to the second embodiment in the configuration around the upper and lower bearings and the structure of the rotor blades.

[0101] In the third embodiment, components or parts having the same functions and structures as those of the first and second embodiments will be denoted by the same symbols as those of the first and second embodiments in each drawing of this embodiment, and detailed descriptions thereof will be omitted (however, this is not limited to cases where a special explanation has been added).

[0102] A connecting member (hereinafter referred to as a "spacer") 381 is arranged between the outer ring 41a of the first bearing 41 and the inner surface of the end of the upper side a of the tubular member 32, and a connecting member (hereinafter referred to as a "spacer") 382 is also arranged between the outer ring 42a of the second bearing 42 and the inner surface of the end of the lower side b of the tubular member 32.

[0103] The rotating device 301 according to this embodiment includes a blade member 391 having a plurality of blades (reference numeral 391c to be described later) adjacent to the outer side (upper side a) of the spacer 381 in the direction of the axis x. The rotating device 301 according to this embodiment also includes a blade member 392 having a plurality of blades (reference numeral 392c to be described later) adjacent to the outer side (lower side b) of the spacer 382 in the direction of the axis x.

[0104] Fig. 17 shows an enlarged perspective view of only the spacer 381 and the blade members 391 on the upper side a in Fig. 16 extracted from the rotating device 301. Fig. 18 shows a cross-sectional perspective view of the cross section BB including the axis x in Fig. 17. Furthermore, Fig. 19 shows an exploded perspective view of the spacer 381 and the blade members 391.

[0105] It should be noted that the spacer 382 and the blade members 392 on the lower side b in Fig. 16 are also arranged upside down, but are essentially members of the same shape and configuration. Therefore, in Fig. 17 to Fig. 19, the spacer 382 and the blade members 392 are also given reference numerals in parentheses as the spacer 382 and the blade members 392. In the following explanation, the spacer 381 and the blade members 391 on the upper side a will be mainly explained, but the same applies to the spacer 382 and the blade members 392 on the lower side a.

[0106] 17 to 19, the blade member 391 has an inner ring portion (hereinafter referred to as the "inner ring portion") 391a, an outer ring portion (hereinafter referred to as the "outer ring portion") 391b, and a plurality of (three in this embodiment) helical blades 391c connecting between the inner ring portion 391a and the outer ring portion 391b. Since the blade member 391 has ring portions (the inner ring portion 391a and the outer ring portion 391b) on both the inner and outer circumferential sides, the blades 391c are reinforced, and the strength of the blade member 391 is improved.

[0107] The blade members 391, 392 may be made of any material such as resin, aluminum, or other various metals, but from the standpoints of weight reduction, cost reduction, and moldability, it is preferable to make them from resin. 17 to 19, the three blades 391c are oriented in a direction inclined with respect to the axis x (the axial direction of the shaft member 5). The three blades 391c are inclined at the same angle to form a helical shape. Cavities 391d are formed between the three blades 391c.

[0108] The blade member 391 rotates in either of the circumferential directions ef, thereby moving the gas in either of the directions of the double-headed arrows k in Figures 17 and 18 within the cavity 391d, resulting in a gas flow in the direction of the axis x. In other words, the blade member 391 functions as a so-called fan.

[0109] 18, the inner ring portion 391a has a cross-sectional shape with an inclined surface that widens from the upper side a to the lower side b, and includes a conical tube portion 391e that is thicker at the bottom. The inner ring portion 391a also has a cylindrical protrusion (hereinafter referred to as the "cylindrical protrusion") 391f that extends from the outermost circumference of the conical tube portion 391e to the lower side b at a bottom 391g of the conical tube portion 391e.

[0110] Also, as shown in FIG. 18, the outer ring portion 391b has a cross-sectional shape with an inclined surface that widens slightly from the upper side a to the lower side b, a conical tube portion 391i that is slightly thicker at the bottom, and a cylindrical protrusion portion (hereinafter referred to as the "cylindrical protrusion portion") 391h in which the corner of the outer periphery of the end portion on the lower side b is cut out and recessed (the cut out portion is referred to as the "notch 391k" as a recess), extending from the inner periphery side to the lower side b. In the direction of the axis x, the length of the cylindrical protruding portion 391f and the length of the cylindrical protruding portion 391h are such that the cylindrical protruding portion 391f is longer than that of the cylindrical protruding portion 391h, and the ends (lower ends) of the lower side b are at the same position.

[0111] The spacer 381 has an annular base 381c facing the three blades 391c of the blade member 391, a cylindrical ring portion (hereinafter referred to as the "inner ring portion") 381a connected to the inner peripheral side of the base 381c and extending in the vertical direction ab of the axis x, and a cylindrical ring portion (hereinafter referred to as the "outer ring portion") 381b connected to the outer peripheral side of the base 381c and extending in the vertical direction ab of the axis x. In the direction of the axis x, the inner ring portion 381a is longer than the outer ring portion 381b. The spacers 381 and 382 have a simple holed shape so that the precision and strength required as a connecting member can be easily and at low cost.

[0112] The inner peripheral surface of the inner ring portion 381a of the spacer 381 is fixed to the outer peripheral surface of the outer ring 41a of the first bearing 41. Moreover, the inner peripheral surface of the inner ring portion 382a of the spacer 382 is fixed to the outer peripheral surface of the outer ring 42a of the second bearing 42. There are no particular limitations on how the inner peripheral surfaces of the inner ring portions 381a, 382a are fixed to the outer peripheral surfaces of the outer rings 41a, 42a, and any method known in the art may be used, such as press fitting, interference fitting, fixing with an adhesive, engagement, or a combination of a plurality of these fixing means (fixing elements).

[0113] Furthermore, the outer peripheral surfaces of the outer ring portions 381b, 382b of the spacers 381, 382 are fixed to the inner peripheral surfaces of the ends on both upper and lower sides ab in the direction of the axis x of the cylindrical member 32. There are no particular limitations on the manner in which the outer peripheral surfaces of the outer ring portions 381b, 382b are fixed to the inner peripheral surface of the cylindrical member 32, and the fixing may be performed by a conventionally known method, such as press fitting, interference fitting, fixing with an adhesive, engagement, or a combination of a plurality of these fixing means (fixing elements).

[0114] In the spacer 381, three holes 381d in an elliptical shape that draws an arc are formed in the base 381c. The holes 381d serve as air passages through which gas can pass. The base 381c is connected to the inner ring portion 381a and the outer ring portion 381b at a slightly lower side b in the thickness direction (axis x direction) of the spacers 381, 382. Therefore, in the spacer 381, the position of the base 381c is located inside the end faces of the inner ring portion 381a and the outer ring portion 381b on the stator 2 side. The base 381c, the inner ring portion 381a, and the outer ring portion 381b form a step portion recessed in the axis x direction.

[0115] Cylindrical protrusions 391f and 391h of blade member 391 fit into steps in spacer 381 and are integrated as shown in Fig. 18. That is, the lower ends of cylindrical protrusions 391f and 391h contact the surface of upper side a of base 381c, the upper end of inner ring portion 381a contacts bottom 391g of conical cylinder portion 391e, and the upper end of outer ring portion 381b contacts notch 391k of conical cylinder portion 391e, so that blade member 391 and spacer 381 fit together and are integrated.

[0116] Cavity 391d in blade member 391 integrated with spacer 381 is connected to hole 381d corresponding to the ventilation path of spacer 381, thereby forming the ventilation path of blade member 391. That is, the gas flow in cavity 391d indicated by double arrow k in Fig. 17 and Fig. 18 is connected to the gas flow in hole 381d indicated by double arrow m in Fig. 18, thereby forming an air passage communicating between the inside and outside of rotor 3 as a whole.

[0117] 16, a leaf spring 250 is attached near the end of the upper side a of the shaft member 5, and biases the blade members 391 and the bearing 41 from the upper side a. The biasing force of the leaf spring 250 stably integrates the blade members 391 and the spacer 381. Furthermore, a leaf spring 251 is attached near the end of the lower side b of the shaft member 5, and biases the blade members 392 and the bearings 42 from the lower side b. The biasing force of the leaf spring 251 ensures that the blade members 392 and the spacer 382 are stably integrated together.

[0118] As described above, the spacers 381 and 382 are fixed to the inner circumferential surface of the cylindrical member 32 of the rotor 3. Therefore, the blade members 391, 392 fixed to the cylindrical member 32 of the rotor 3 via the spacers 381, 382 are adapted to rotate in conjunction with the rotation of the rotor 3.

[0119] Next, the rotor blade 306 will be described with reference to FIGS. Fig. 20 is a perspective view of only the rotor blade 306 extracted from the rotating device 301 according to this embodiment. Also, Fig. 21 is an exploded perspective view of the rotor blade 306. As shown in Fig. 16, the rotor blade 306 is attached to the outer circumferential surface of the cylindrical member 32 of the rotor 3 in a central region in the axial direction (axis x direction) of the cylindrical member 32.

[0120] The rotor blade 306 includes a cylindrical tube 363 and a plurality of (five in this embodiment) blades 362 fixed obliquely to the inner circumferential surface of the tube 363. The blades 362 are oriented in a direction inclined with respect to the direction of the axis x of the shaft member 5. The five blades 362 are arranged at equal intervals in the circumferential direction ef, inclined at the same angle, and formed into a helical shape.

[0121] 20 and 21, the rotor blade 306 is formed by stacking three rotor blade members 306a, 306b, and 306c side by side in the direction of the axis x. The rotor blade members 306a, 306b, and 306c each include a cylindrical portion 363a, 363b, and 363c, and five blade portions 362a, 362b, and 362c protruding inward from the inner surface of the cylindrical portion. These five blade portions 362a, 362b, and 362c are formed as ribs extending toward the axis x on the inner surface.

[0122] The three rotor blade members 306a, 306b, 306c are stacked in the axis x direction, so that the tube portions 363a, 363b, 363c are aligned and connected in the axis x direction to form a tube 363. Similarly, the three rotor blade members 306a, 306b, 306c are stacked in the axis x direction, so that the five blade portions 362a, 362b, 362c of each are aligned and connected in the axis x direction to form five blades 362.

[0123] An end portion of each of the blade portions 362a, 362b, and 362c faces an end portion of the other blade portions in the axial direction (axis x direction) or circumferential direction ef of the rotor 3. More specifically, in the axial direction x or circumferential direction ef, an end portion on the upper side a of the blade portion 362b faces an end portion on the lower side b of the blade portion 362a, and an end portion on the lower side b of the blade portion 362b faces an end portion on the upper side a of the blade portion 362c.

[0124] The opposing ends of the blade portions 362a, 362b, and 362c and the opposing upper and lower ends of the cylinder portions 363a, 363b, and 363c are fixed together by a fixing means (fixing element) such as an adhesive, thereby obtaining an integrated rotor blade 306. Note that the fixing means (fixing element) is not limited to fixing by an adhesive, and various fixing means (fixing elements) can be appropriately adopted.

[0125] In the axial direction (axis x direction) or circumferential direction ef of the rotor 3, one of the five blades 362 of the rotor blade 306 faces the adjacent blade 362 of the one blade 362. Taking the blade 362-2 in Fig. 20 as a representative example, the side surface of the blade 362-2 faces the adjacent blade 362-3 in the clockwise circumferential direction e or the axis x direction at the lower end 362-2g side. Also, the side surface of the blade 362-2 faces the adjacent blade 362-1 in the counterclockwise circumferential direction f or the axis x direction at the upper end 362-2p side.

[0126] In the axial direction x or the circumferential direction ef, each end of the five blades 362 of the rotor blade 306 is located between both ends of the adjacent blade 362. Taking the blade 362-1 in Fig. 20 as a representative, a lower end 362-1g of the blade 362-1 is located between both ends 362-2p, 362-2g of the adjacent blade 362-2 in the axial direction x or the clockwise circumferential direction e of the blade 362-1. Taking the blade 362-3 in Fig. 20 as a representative, an upper end 362-3p of the blade 362-3 is located between both ends 362-2p, 362-2g of the adjacent blade 362-2 in the axial direction x or the counterclockwise circumferential direction f of the blade 362-3.

[0127] In the direction of the axis x, each end of the five blades 362 of the rotor blade 306 faces a portion (side surface) between both ends of the adjacent blade 362. In other words, portions of the five blades 362 of the rotor blade 306 overlap each other in the direction of the axis x. For this reason, gas passes through a passage formed between the side surfaces of two adjacent blades 362 in the direction of the axis x or the circumferential direction ef.

[0128] In the case of a shape in which the blades 362 overlap each other at the circumferential direction ef positions, as in the rotor blade 306 of this embodiment, molding is relatively difficult as it is. However, in this embodiment, the rotor blade 306 is divided into three rotor blade members 306a, 306b, and 306c. Therefore, the individual rotor blade members 306a, 306b, and 306c have good moldability and can be easily molded using a general mold. Therefore, by overlapping these rotor blade members 306a, 306b, and 306c, the rotor blade 306 having a relatively complicated shape can be formed easily or at low cost.

[0129] The opening angle of the blades 362a, 362b, 362c of each of the rotor blade members 306a, 306b, 306c (the circular angle of an arc between adjacent blades on a circumference along the blade centered on the axis x when viewed from one side in the direction of the axis x (e.g., the upper side a)) is 180° / m (m is a positive integer; the number of blades), and since there are five blades (m=5), each opening angle is 36°.

[0130] Alignment grooves 364 are provided on the outer circumferential surfaces of the cylinder portions 363a, 363b, 363c of the rotor blade members 306a, 306b, 306c at intervals of a central angle of 36°, half of which coincide with the locations of the blade portions 362a, 362b, 362c on the inner circumferential side of the upper side a. By overlapping the three rotor blade members 306a, 306b, 306c with the alignment grooves 364 aligned so that the locations where the blade portions 362a, 362b, 362c are present and the locations where they are not present on the inner circumferential side of the upper side a alternate, the blade portions 362a, 362b, 362c are connected, and the helical blade 362 is formed.

[0131] The rotor blades 306 are attached to the outer circumferential surface of the cylindrical member 32 by fixing the ends of the five blades 362 on the radial axis x side to predetermined positions of the cylindrical member 32 of the rotor 3 with an adhesive or the like. Therefore, the rotor blades 306 rotate within the housing 7 as the rotor 3 rotates.

[0132] The rotor blades 306 rotate with the rotation of the rotor 3, and therefore rotate together with the rotor 3, and a flow of air is generated in the direction of the axis x in response to the rotation of the rotor blades 306. This air flow is generated in a cavity 377 between the rotor 3 and the housing 7 in either the upward or downward direction in the axial direction of the shaft member 5.

[0133] 16, in the rotating device 301 of this embodiment, when the rotating device 301 is driven to rotate the rotor blades 306 in the clockwise circumferential direction e, an airflow in the direction of the arrow i is generated, and the gas taken in from the lower end opening 76 passes through the cavity 277 and is blown out from the upper end opening 75. On the other hand, when the rotor blades 306 are rotated in the counterclockwise circumferential direction f, an airflow in the direction of the arrow j is generated, and the gas taken in from the upper end opening 75 passes through the cavity 277 and is blown out from the lower end opening 76.

[0134] Like the first and second embodiments, the rotating device 301 according to this embodiment can achieve a compact overall rotating device, supply of strong wind and large air volume (large suction volume), stabilization of the rotation of the rotor 3, high rotation speed and high torque, and can provide a rotating device with excellent characteristics. In this embodiment as well, efficient cooling of the stator 2 is achieved by disposing a connecting member (spacers 381, 382) between the bearing 4 and the rotor 3, the connecting member having an air passage connecting the inside and outside of the rotor 3.

[0135] As described above, rotation of the rotor 3 in the clockwise direction e or counterclockwise direction f rotates the rotor blades 306, and air taken in from the lower end opening 76 or the upper end opening 75 passes through the cavity 377 and is blown out from the upper end opening 75 or the lower end opening 76, generating an airflow (in the direction of arrow i or arrow j) (see Figure 16).

[0136] Furthermore, the blade members 391, 392 rotate due to the rotation of the rotor 3 in the clockwise e direction or counterclockwise f direction, and the blades 391c, 392b strengthen the airflow in the upper a direction or lower b direction within the tubular member 32. As a result, the strong airflow within the tubular member 32 of the rotor 3 efficiently cools the stator 2, which includes heat generation sources such as the coil 22 and the stator core 21.

[0137] In particular, since the blade members 391, 392 having the blades 391c, 392b are provided on both sides of the upper end opening 75 and the lower end opening 76, a large amount of gas can be taken in and discharged from the rotor 3. Therefore, according to the rotating device 301 of this embodiment, heat generation sources such as the coil 22 and the stator core 21 can be cooled extremely efficiently.

[0138] The blade members 391, 392 arranged above and below have helical blades 391c, 392b that are symmetrical above and below, so that by reversing the drive of the rotating device 301 and reversing the rotation direction of the rotor 3, airflows can be generated in both the upward and downward directions (the directions of arrows i and j).

[0139] In addition, the direction of the airflow (downward or upward) caused by the rotation of the blade members 391, 392, which changes depending on the rotation direction of the rotor 3 (clockwise direction e or counterclockwise direction f), is the same as the direction of the airflow (arrow i direction and arrow j direction) caused by the rotation of the rotor blade 306, which also changes in the same way. Therefore, the total air volume can be improved.

[0140] As in the second embodiment, there is nothing in the airflow path inside the tubular member 32 that would obstruct the airflow other than the object to be cooled, and there is no need to provide a vent in the tubular member 32 for taking in and expelling gas. As in the second embodiment, the heat generation source can be cooled efficiently, and the rotating device 301 can be made smaller.

[0141] In this embodiment, the rotor blade 306 has five blades 362 whose ends on the axis x side are fixed in contact with the outer circumferential surface of the cylindrical member 32 of the rotor 3, so that it is possible to reduce the region (area) of contact with the rotor (rotating body) 3. As a result, it is possible to increase the region (area) of the outer circumferential side surface of the rotor 3 exposed to the gas, so that it is possible to improve the heat dissipation performance of the rotor 3.

[0142] In this embodiment, similarly to the second embodiment, the connecting members (spacers 381, 382) and the blade members 391, 392 that generate an airflow inside the tubular member 32 are separated. Therefore, in this embodiment, similarly to the second embodiment, the degree of freedom in the shape of the connecting member is high, the cross-sectional area of ​​the air passage in the connecting member can be increased, the strength of the connecting member can be improved, and the size constraints on the bearing 4 side are significantly alleviated. Moreover, the operation and effect of being able to assemble the rotating device without using blade members are the same as those of the second embodiment.

[0143] Although the rotating device of the present invention has been described above with reference to preferred embodiments, the rotating device of the present invention is not limited to the configurations of the above embodiments. For example, in the above-described embodiments, an example in which one of the connecting members is the inner impeller 81 (first embodiment) and an example in which the blade members 291, 292 or the blade members 391, 392 are provided on both sides of the upper end opening 75 and the lower end opening 76 (second and third embodiments) are described, but a configuration that does not include any blades that generate a cooling airflow in the rotor may also be used.

[0144] That is, even when the inner impeller 81 is replaced with the spacer 82 in the first embodiment, or when the blade members 291, 292 or the blade members 391, 392 are removed in the second and third embodiments, the action and effect of the present invention can be expected because a connecting member having an air passage connecting the inside and outside of the rotating body (rotor 3) is provided.

[0145] Even if there are no blades that generate a cooling airflow inside the rotor, an airflow is generated by the action of the rotor blades 6, 206, 306 such that air taken in from the lower end opening 76 or the upper end opening 75 passes through the inside of the tubular member 32 and is blown out from the upper end opening 75 or the lower end opening 76. Therefore, an airflow toward the upper side a or the lower side b is generated below the lower end opening 76 and above the upper end opening 75, and thus gas flows in and out of the rotor 3 even in the air passage of the connecting member that does not have blades, and an airflow toward the upper side a or the lower side b is generated by the airflow.

[0146] In the embodiment described above, an example has been given of a configuration in which both the upper and lower ends of the shaft member 5 are fixed to the housing 7, but it is sufficient that the fixed side shaft member 5 is fixed to the housing 7 in some way, so it is sufficient that at least one end or a portion of the shaft member 5 is fixed to the housing.

[0147] In the embodiment described above, an example has been given of a configuration in which the shaft member 5 is fixed to the disk portion 71b of the housing 7, but the rotating device of the present invention may also be configured such that the housing 407 and the shaft members 405, 405', 405" are fixed via connecting members 410, 410', 410" as in the modified example shown in Figures 22 to 24. The connecting members 410, 410', 410" may be made of any material, such as resin, aluminum, or any other type of metal.

[0148] In the modified example shown in Figs. 22 to 24, the connecting members 410, 410', 410" include cylindrical portions 410a, 410a', 410a" and annular flange portions 410b, 410b', 410b". The inner circumferential surfaces of the cylindrical portions 410a, 410a', 410a" are fixed to the outer circumferential surfaces of the shaft members 405, 405', 405" at the ends of the upper sides a of the shaft members 405, 405', 405". The flange portions 410b, 410b', 410b" protrude from the outer circumferential surfaces of the cylindrical portions 410a, 410a', 410a" to the outer circumferential side c. The upper a surface of the flange portions 410b, 410b', 410b" is located on a lower side b than the upper a surface of the tubular portions 410a, 410a', 410a". In the axial direction of the shaft members 405, 405', 405", a part of the tubular portions 410a, 410a', 410a" is located between the upper a surface of the flange portions 410b, 410b', 410b" and the upper a surface of the tubular portions 410a, 410a', 410a". The inner peripheral surface of the annular portion 471b of the housing 407 contacts a portion of the outer peripheral surface of the tubular portions 410a, 410a', 410a", the upper side a surface of the flange portions 410b, 410b', 410b" contacts the lower side b surface of the annular portion 471b of the housing 407, and the connecting members 410, 410', 410" and the housing 407 are engaged and fixed.

[0149] 22, the cylindrical portion 410a of the connecting member 410 extends in the axial direction to an end of the first bearing 441 on the lower side b. The cylindrical portion 410a is located between the shaft member 405 and the first bearing 441 in the radial direction. The inner ring 441b of the first bearing 441 is fixed to another part of the cylindrical portion 410a on the lower side b relative to the flange portion 410b. A plurality of circular through holes 410c are formed in the cylindrical portion 410a at equal intervals in the circumferential direction, penetrating the cylindrical portion 410a in the axial direction. Each of the plurality of through holes 410c extends in the axial direction from an end of the upper side a to an end of the lower side b of the cylindrical portion 410a. In the modification shown in FIG. 22, a plurality of (e.g., three) lead wires 483 connected to the coil 22 are led out to the outside of the rotating device through one or more of the through holes 410c.

[0150] 23, the surface of the lower side b of the cylindrical portion 410a' and the surface of the lower side b of the flange portion 410b' of the connecting member 410' form a single plane. In the axial direction of the shaft member 405', the surface of the lower side b of the cylindrical portion 410a' and the surface of the lower side b of the flange portion 410b' face the surface of the upper side a of the first bearing 41 and are spaced a predetermined distance from the surface of the upper side a of the first bearing 41. The shaft member 405' is partially or entirely hollow in the axial direction, and is open to the upper side a. The shaft member 405' is provided with a plurality of (e.g., three) openings 405a' on the lower side b of the first bearing 41 in the axial direction. The number of openings 405a' may be one. In the modification shown in FIG. 23, a plurality of (e.g., three) lead wires 483' connected to the coil 22 are drawn into the shaft member 405' from the openings 405a' and drawn out from the end opening of the shaft member 405' to the outside of the rotating device.

[0151] In the modified example shown in FIG. 24, the surface of the lower side b of the tubular portion 410a" of the connecting member 410" and the surface of the lower side b of the flange portion 410b" form a single plane. In the axial direction of the shaft members 405, 405', 405", the surface of the lower side b of the tubular portion 410a' and the surface of the lower side b of the flange portion 410b' face the surface of the upper side a of the first bearing 41 and are spaced a predetermined distance from the surface of the upper side a of the first bearing 41. A plurality of (e.g., three) recesses 405a" are formed radially and at equal intervals on the outer peripheral surface of the shaft member 405" in a straight line extending from an end of the upper side a to the lower side b in the axial direction. Each recess 405a" extends beyond the first bearing 41 to the lower side b. Note that there may be only one recess 405a". In the modified example shown in FIG. 24, a plurality of (e.g., three) lead wires 483" connected to the coil 22 are led out to the outside of the rotating device via one or more of the recesses 405a".

[0152] According to the modified examples shown in Figs. 22 to 24, the number of parts can be kept to a minimum, and the lead wires can be easily pulled out from within the rotating device. 22 to 24, the connecting members 410, 410', 410" are provided at the end of the upper side a of the rotating device, but the connecting members 410, 410', 410" may be provided at the end of the lower side b of the rotating device, or may be provided at both ends. In addition, in the modified example shown in FIG. 23, the shaft member 405a is opened at the upper side a, but the shaft member 405' may be opened at the lower side b. Furthermore, in the modified example shown in FIG. 24, the recess 405a" is formed so as to extend from the end of the upper side a of the shaft member 405" to the lower side b in the axial direction, but the recess 405a" may be formed so as to extend from the end of the lower side b of the shaft member 405" to the upper side a. That is, in the modified examples shown in Figs. 22 to 24, the lead wires are drawn out from the upper side a of the rotating device, but the lead wires may be drawn out from the lower side b of the rotating device.

[0153] In the first embodiment, the inner ring portion 82a and the outer ring portion 82b of the spacer 82 are both cylindrical, but in the rotating device of the present invention, as in a modified example shown in Fig. 25, the inner ring portion 582a of the spacer 582 may have an annular protruding portion 582aa protruding to the inner peripheral side d at the end of the lower side b. Also, the outer ring portion 582b of the spacer 582 may have an annular protruding portion 582ba protruding to the outer peripheral side c at the end of the lower side b. Here, the protruding portion 582aa engages with the end of the lower side b of the inner ring 42b of the second bearing 42 in the axial direction, and the protruding portion 582ba engages with the end of the lower side b of the tubular member 32 in the axial direction.

[0154] 25, the protrusions 582aa and 582ba function as stoppers, facilitating positioning of the spacer 582, the rotor 3, and the second bearing 42. In addition, it is possible to prevent misalignment caused by the spacer 582, the rotor 3, and the second bearing 42 sliding relative to one another in the axial direction. 25, a configuration in which protrusions are provided on the inner periphery side d and the outer periphery side c at the end of the lower side b of the connecting member on the lower side b is exemplified, but protrusions may be provided on the inner periphery side d and the outer periphery side c at the end of the upper side a of the connecting member on the upper side a, or both. The connecting member having a protrusion may be a spacer or an inner impeller.

[0155] In the above embodiment, a blower or suction machine provided with the rotor blades 6, 206, 306 is taken as an example, but the rotating device of the present invention may use the rotational force for a purpose other than rotating the rotor blades. In that case, the rotor blades are not essential, and a transmission mechanism such as a gear or a shaft for transmitting the rotational force to a target object may be provided, or the target object may be directly acted on the rotor.

[0156] Furthermore, in the rotating devices of the above embodiments, liquid such as water, oil, etc. may be used instead of gas. Therefore, the rotating devices of the above embodiments can be applied to fluids including gas and liquid. In addition, a person skilled in the art can appropriately modify the rotating device of the present invention in accordance with conventionally known knowledge. As long as the configuration of the present invention is still provided even after such modification, it is of course included in the scope of the present invention. [Explanation of symbols]

[0157] Reference Signs List 1...rotating device, 2...stator, 3...rotor (rotating body), 4...bearing, 5...shaft member, 6...moving blade, 7...housing, 21...stator core, 22...coil, 23...magnetic pole portion, 24...annular portion, 31...magnet, 32...tubular member, 41...first bearing (bearing), 41a, 42a...outer ring, 41b, 42b...inner ring, 41c, 42c...bearing ball, 42...second bearing (bearing), 61...inner cylinder, 62...blade, 63...outer cylinder, 64...cavity, 71a...spoke portion, 71b...disk portion, 72...tubular portion, 77...space, 81...inner impeller (connecting member), 81a, 82a...inner ring portion, 81b , 82b... outer ring portion, 81c... blade, 82... spacer (connecting member), 82c... spoke, 201... rotating equipment, 206... rotor blade, 261a, 261b, 261c... fixed portion, 262... blade, 277... cavity, 281, 282... spacer (connecting member), 281a, 282a... inner ring portion, 281b, 282b... outer ring portion, 281c, 282c... spoke, 291... blade member, 291a... ring portion, 291b... blade, 291c... protruding portion, 292... blade member, 292a... ring portion, 292b... blade, 292c... protruding portion, 301... rotating equipment, 306... rotor blade, 306a, 306b, 306c... rotor blade member, 362, 362-1, 362-2, 362-3... blade, 362a, 362b, 362c... blade portion, 362-1g, 362-2g... lower end, 362-2p, 362-3p... upper end, 363... cylinder, 363a, 363b, 363c... cylinder portion, 364... alignment groove, 377... cavity, 381, 382... spacer (connecting member), 381a, 382a... inner ring portion, 381b, 382b... outer ring portion, 381c, 382c... base, 381d, 382d... base, 391... blade member, 391a... inner ring portion, 391b... outer ring portion, 39 1c... blade, 391d... cavity, 391e... conical cylinder portion, 391f... cylindrical protrusion portion, 391g... bottom, 391h... cylindrical protrusion portion, 391i... conical cylinder portion, 391k... notch, 392... blade member, 392a... ring portion, 392b... outer ring portion, 392c... blade, 392d... cavity, 392e... conical cylinder portion, 392f... cylindrical protrusion portion, 392g... bottom, 392h... cylindrical protrusion portion, 392i... conical cylinder portion, 392k... notch, 405, 405', 405"... shaft member, 405a'... opening, 405a"... recess, 407... housing, 410, 410', 410"... connecting member, 410a,410a', 410a" ... cylindrical portion, 410b, 410b', 410b" ... flange portion, 410c ... through hole, 441 ... first bearing (bearing), 441a ... outer ring, 441b ... inner ring, 441c ... bearing ball, 471b ... annular portion, 483, 483', 483" ... lead wire, 582 ... spacer (connecting member), 582a ... inner ring portion, 582b ... outer ring portion, 582c ... spoke, 582aa, 582ba ... protruding portion,

Claims

1. A shaft member; A cylindrical rotor rotatable relative to the shaft member; One or more bearings that support the rotating body relative to the shaft member; A coupling member is disposed between the bearing and the rotating body in a radial direction, or a plurality of coupling members are disposed between the bearing and the rotating body, the connecting member has an air passage that communicates between the inside and the outside of the rotating body, a blade member having a plurality of blades, the blade member being adjacent to the connecting member in the axial direction; The blade of the blade member is inclined, The blade member has a protruding portion protruding toward the connecting member, The rotating device, wherein the protrusion fits into the connecting member.

2. The rotating device according to claim 1 , comprising: a cylindrical housing surrounding the rotating body; and a stator located inside the rotating body.

3. The connecting member has a plurality of blades, The rotating device according to claim 1 , wherein the plurality of blades are oriented in a direction inclined with respect to an axial direction of the shaft member.

4. the plurality of bearings are provided at both ends of the rotating body or in the vicinity thereof in the axial direction of the shaft member, the plurality of connecting members are disposed between the plurality of bearings and the rotating body, The rotating device according to claim 3 , wherein one of the plurality of connecting members includes the vane.

5. Gas can flow axially inside the rotor, The rotating device according to claim 4 , wherein a connecting member on a gas discharge port side has the vane.

6. The rotating device according to claim 4 or 5, wherein the other of the plurality of connecting members has a plurality of spokes extending radially inward and outward.

7. The rotating device according to claim 1 , wherein the blades of the blade member are oriented in a direction inclined with respect to an axial direction of the shaft member.

8. The rotating device according to claim 1 , wherein the connecting member has a plurality of spokes extending radially inward and outward.

9. the plurality of bearings are provided at or near both ends in the axial direction of the rotating body, the plurality of connecting members are disposed between the plurality of bearings and the rotating body, The rotating device according to claim 1 , wherein the blade member is provided on one of the plurality of connecting members on an outer side in an axial direction of the rotating body.

10. Gas can flow in the axial direction inside the rotor, The rotating device according to claim 9 , further comprising: a connecting member on a gas discharge port side, the blade member being provided on an outer side in an axial direction of the rotor.

11. a blade member having a plurality of blades, the blade member being adjacent to the connecting member in the axial direction; the blade member has an air passage connected to the air passage of the connecting member, The rotating device according to claim 1 , wherein a gas can flow inside the rotor in both axial directions.

12. The rotating device according to claim 11 , wherein the connecting member has a base that faces the blades of the blade member in the axial direction of the shaft member.

13. The rotating device according to claim 12 , wherein the base is formed with a hole serving as the ventilation path.

14. The rotating device according to claim 1 , wherein a rotor blade is provided on an outer circumferential surface of the rotor.

15. The rotor blade includes a plurality of blades, each of which has a plurality of blade portions arranged in an axial direction of the rotor, The rotating device according to claim 14 , wherein each of the plurality of blades of the rotor blade faces an adjacent blade in a circumferential direction of the rotor.

16. The rotating device according to claim 15 , wherein an end portion of each of the plurality of blades of the rotor blades is located between both ends of an adjacent blade in a circumferential direction of the rotor.

Images