JPWO2016079819A1 - Rotating electric machine and rotating electric machine integrated device - Google Patents

Abstract

This is a cantilevered rotating electrical machine that effectively prevents bearing corrosion. A stator, a rotor, a rotating shaft, a bearing disposed near one end of the rotating shaft, and other rotations extending radially from the other end surface of the rotating shaft and rotating in the same direction as the rotating shaft A single-shaft-type rotating electrical machine having a connecting portion that connects to the body, an inner cylindrical space that opens at one end surface, and a housing that supports the bearing at the other end surface, and the other end surface of the rotating shaft; A sheet-like first insulating member disposed between the contact surface with the connecting portion, a plurality of bolts that fasten the connecting portion to the other end surface side of the rotating shaft from the rotating shaft direction, the connecting portion, and the bolt A sheet-like second insulating member disposed between the contact surface and a sleeve that insulates the outer periphery of the bolt.

Description

  The present invention relates to a rotating electrical machine and a rotating electrical machine integrated device, and more particularly to a rotating electrical machine and a rotating electrical machine integrated device in which a rotating shaft is cantilevered by a bearing on a non-load side.

In a rotating electrical machine (an electric motor (motor) and a generator), there is a problem that an axial current generates electrolytic corrosion in a bearing that supports the rotating shaft.
Patent Document 1 discloses an electric motor that suppresses discharge energy flowing per unit area and reduces electrolytic corrosion by adopting a roller bearing that makes line contact instead of a point contact ball bearing as a bearing that supports a rotating shaft. To do. Further, Patent Document 1 discloses that the discharge energy is further suppressed by reducing the oil film breakdown voltage by lowering the viscosity of the grease functioning as an insulating material. In addition, Patent Document 1 balances the trade-off by adopting a roller bearing with a large contact area against the risk that the oil film is thinned by the low-viscosity grease and the insulating property is lowered (oil film breakage). Also disclosed to take.

  Patent Document 2 discloses an insulating washer that uses a joint portion of a conductive pipe such as a gas pipe for bolt connection. It is disclosed that by obtaining this insulating washer from a heat-resistant resin, it is possible to ensure insulation while eliminating the need for frequent tightening of bolts due to the prepping phenomenon that occurs at high temperatures.

JP-A-10-322965 JP-A-2005-268121

  Here, a so-called single-shaft rotating electric machine that supports only one end of the rotating shaft with a bearing will be considered. A single-shaft rotary electric machine may be used as an electric motor or a generator by integrally connecting another drive source such as an internal combustion engine and a rotary shaft, for example. In order to integrate the rotating shaft and to reduce the size of the entire apparatus, it is common practice to integrally connect a housing for storing an armature or the like with an external casing or the like of another driving source. For example, there is a case where an engine drive shaft for a vehicle and a rotating electrical machine of a rotating electrical machine are integrally connected, and an engine housing and a rotating electrical machine housing are also integrally connected.

  Further, other devices may be added as a unit. In the case of an apparatus for vehicle use, an oil or coolant pump may be installed and connected so as to be integrated with a rotating electrical machine housing, and the pump, rotating electrical machine, and engine may be configured integrally. There is also a shaft in the pump that transmits the power to rotate the impeller, but it is common to have a bearing that supports the pump shaft regardless of whether it is installed integrally or independently with the rotating shaft of the rotating electrical machine. is there. The engine drive shaft also includes various bearings.

  Since the housing of the rotating electrical machine, the engine housing, and the pump housing are generally composed of a conductive member, such a device is in an electrically connected state. Therefore, the shaft current generated in the rotating electrical machine flows from the engine drive shaft to the engine housing through the engine bearing, and then flows back to the rotating electrical machine bearing through the electrically connected rotating electrical machine housing, From the rotary electric machine housing, it further flows to the pump housing and returns to the bearing of the pump shaft. That is, there is a possibility that electric corrosion occurs in the bearings of the respective devices connected electrically.

  If the rotating electrical machine bearing itself has an insulating property as in Patent Document 1, it is effective in preventing bearing electric corrosion of the rotating electrical machine. However, if the rotating electrical machine and other devices are integrated, the rotating electrical machine Even if only the electric bearings are prevented from electrolytic corrosion, it is not possible to prevent the bearing electrical decoration of each of the devices other than the electrically connected rotating electrical machines such as the engine and the pump. Therefore, it is necessary that all the bearings of other devices have insulation properties as well, but there is a possibility that the bearings with sufficient insulation properties may not be applied due to the characteristics of the devices. Issues remain in terms of cost.

In this regard, as in Patent Document 2, when connecting the conductive member, by applying an insulating washer to the seat surface side of a fastener such as a bolt or nut, and electrically disconnecting each device, It is also conceivable not to form an axial current flow path.
However, the strength of the washer is generally low, and the range of use is narrow in terms of strength. For example, in an environment that requires a large tightening torque using high-strength bolts, it cannot be used due to circumstances such as breakage. Further, Patent Document 2 discloses a washer made of a heat-resistant resin as a countermeasure for retightening due to functional deterioration at high temperatures, but there is no disclosure regarding pressure such as high tightening torque, and the range of use is the range of conventional washers. I can't take it off.

  In the case of using a single-shaft rotating electric machine, a technique for preventing the electrolytic corrosion of a bearing having low cost and durability against the use environment while ensuring the degree of freedom in device design is desired.

  In order to solve the above problems, for example, the configuration described in the claims is applied. That is, the rotor disposed face-to-face with the stator, the fixed rotation shaft, the bearing disposed near one end of the rotation shaft, and the radial end portion is larger than the rotation shaft, The central portion is opposed to the other end surface of the rotating shaft, extends in the radial direction of the rotating shaft, and is connected to another rotating body that rotates in the same direction as the rotating shaft, and has a substantially cylindrical shape that opens at one end surface. A single-shaft rotary electric machine having an inner cylindrical space, supporting the bearing at the other end surface, and having a housing that arranges the stator, the rotor, and the rotating shaft in the inner cylindrical space, A sheet-like first insulating member disposed between the other end surface of the rotating shaft and the contact surface with the connecting portion, and a plurality of members that fasten the connecting portion to the other end surface side of the rotating shaft from the rotating shaft direction. A sheet-like second insulating member disposed between the bolt, the connecting portion, and the contact surface with the bolt; A sleeve for insulating the outer periphery of the bolt is configured to have a.

  Furthermore, it is a structure provided with the contact plate which has a through hole which penetrates the said volt | bolt and arrange | positions between the said 2nd insulating member and the said bolt seat surface.

  ADVANTAGE OF THE INVENTION According to this invention, the electrolytic corrosion of the bearing which receives the influence of a shaft current can be prevented efficiently. Other problems, configurations, and effects of the present invention will become apparent from the following description.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side sectional view showing a configuration of a single-shaft rotating electric machine according to a first embodiment to which the present invention is applied. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic diagram showing a schematic configuration of a rotating electrical machine integrated device in which a rotating electrical machine according to a first embodiment is integrally configured with an engine and a pump. It is a sectional side view which shows the structure of the connection part of the rotary electric machine and engine by 1st Embodiment. It is a schematic diagram which shows the state which observed the load side end surface of a rotating shaft by 1st Embodiment, a connection part, and this board from the rotating shaft direction from the load side toward the anti-load side, respectively. It is a principal part expanded side sectional view regarding the connection part of the rotating shaft by 1st Embodiment, and a connection part. It is a principal part expanded side sectional view regarding the connection part of the connection part by 2nd Embodiment, and a flywheel.

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to the drawings.
[First Embodiment]
An example of the rotating electrical machine 100 according to the first embodiment to which the present invention is applied will be described.
In FIG. 1, the side cross-sectional structure of the rotary electric machine 100 is shown. In the drawing, the side where the connecting portion 8 is arranged (right side in the figure) in the extending direction of the rotating shaft 7 is called the load side, and the direction where the bearing 6 is arranged (left side in the figure) is called the anti-load side.

  The rotating electrical machine 100 includes an outer housing 1, an inner housing 2, an end bracket 3, a stator 4, a rotor 5, a bearing 6, a rotating shaft 7, and a connecting portion 8. The outer housing 1 includes a substantially cylindrical inner housing 2 in which the outer peripheral surface is in partial contact with the inner peripheral surface, and the opposite end portions on the opposite load side are connected to the end bracket. A bearing 6 is disposed near the center of the end bracket 3. The bearing 6 is connected to the opposite side of the rotary shaft 7 so as to rotatably support the rotary shaft 7. The rotor 5 fixed to the peripheral surface of the rotating shaft 7 is disposed so that the stator 4 and the magnetic pole face each other with a predetermined gap in the radial direction. The stator 4 is held with its outer peripheral surface in contact with the inner peripheral surface of the inner housing 2. A connecting portion 8 is disposed in the vicinity of the load side end of the rotating shaft 7. The connecting portion 8 functions as a connecting portion when integrally connecting and fixing to a shaft 120 of the engine 120 described later.

  FIG. 2 shows a device example in which the rotating electrical machine 100 and other devices are integrally configured. In FIG. 2A, an engine 120 is an internal combustion engine having four pistons and cylinders, and an end portion of a shaft shaft 121 such as a crankshaft is exposed from a housing, and a flywheel 121 is provided at a tip portion thereof. In the present embodiment, the flywheel 121 has a function of directly connecting the shaft shaft 121 and the rotating shaft 7 of the rotating electrical machine 100 together with the connecting portion 8. The housing of the engine 120 is structurally and electrically connected to a flange formed on the load side of the outer housing 1 of the rotating electrical machine 100 via the flywheel housing 33.

  In addition, a pump 130 for supplying coolant or oil (hereinafter referred to as “coolant etc.”) to the engine 120 or the like is installed in the counter load side direction of the rotating electrical machine 100. The pump 100 has an impeller (not shown) that circulates coolant or the like, and is connected to a pump shaft 132 that transmits a driving force to the impeller. The pump shaft 132 is rotatably supported by bearings 131 at both ends, and one end is connected to the rotating shaft 7 of the rotating electrical machine 100 through a conductive member such as a gear. In the present embodiment, as a connection between them, an external gear 132 a is formed at the load side end of the pump shaft 132, and the load side end is the axial center portion of the anti-load side end of the rotating shaft 7 of the rotating electrical machine 100. A spline gear that is inserted into and meshed with the internal gear 7c formed in the above is applied (see FIG. 1). Note that the electrical connection is not limited to the spline gear.

  As the shaft 7 of the engine 120 rotates, the rotating shaft 7 rotates, so that the rotating electrical machine 100 generates electric power and the pump 130 circulates coolant or the like. In the present embodiment, the rotary electric machine 100 is described as functioning as a generator, but the present invention is not limited to this, and may be an electric motor (motor) that supplies driving force to the engine 120 or the like. Good.

Here, from the shaft shaft 121 of the engine 120, the housing, the flywheel housing 125, the housing of the rotating electrical machine 100 (including the outer housing 1 and the inner housing 2), the bearing 6, the housing of the pump 130, the bearing 131, and the pump shaft 132. The rotating shaft 7 is electrically connected except for the connection portion 8 and the flywheel 122.
Therefore, if it is assumed that the connection portion 8 and the flywheel 122 are electrically connected, as shown in FIG. 2B, the configuration of FIG. The shaft current feedback path of 77A, 77B, 77C is configured.

In such a state, even if the bearing 6 of the rotating electrical machine 100 is insulated, the two bearings 131 of the pump 130 still have feedback paths in the paths 24B and 24C, and the problem of these electrolytic corrosions of the bearings. Remains. Even if only one of the two bearings 131 is further insulated, the other return path remains. Similarly, bearing electrolytic corrosion occurs in a bearing or the like (not shown) that supports the shaft 120 of the engine 120.
In this embodiment, by electrically insulating between the connecting portion 8 and the flywheel 122 which are common paths of all the feedback paths 24A, 24B and 24C of the shaft current, the electrolytic corrosion of all the bearings in an electrically connected state can be obtained. One of the features is prevention.

The structure of the connection part of the connection part 8 and the flywheel 122 is shown in FIGS.
In FIG. 3, the load-side end portion of the rotating shaft 7 has a columnar-shaped protrusion 7 a that is reduced in diameter by cutting the outer periphery or the like. In addition, a plurality of bolt holes 40a for bolts 40 tightened in the direction of the rotation axis are provided on the radial step surface 7b from the root of the protrusion 7a to the outer periphery of the rotation shaft 7 at the load side end of the rotation shaft 7. The connecting portion 8 is made of a metallic disk member that is smaller than the inner diameter of the outer housing 1 and larger than the diameter of the rotating shaft 7. The connecting portion 8 has a hole 30 having an inner diameter that is a predetermined size larger than the diameter of the protruding portion 7a at the center. Moreover, it has the several through-hole 31 in order to penetrate the volt | bolt 40 along the circumference | surroundings of the hole part 30 of the connection part 8, and is for bolting with the flywheel 31 in the outer periphery vicinity of the radial direction rather than it. A plurality of through holes 32 are provided.

  The plate 37 has a metallic cylindrical shape with a predetermined thickness, and has a ring shape with an inner diameter that is approximately the same as or slightly larger than the diameter of the protruding portion 7a. In addition, the contact plate 37 has a plurality of through holes 39 for allowing the bolts 40 to pass through between both end portions.

  The connecting portion 8 is installed in the projecting portion 7 a of the rotating shaft 7 through the hole 30, and then the abutting plate 37 is installed and tightened with the bolts 40, so that the connecting portion 8 is fixed to the rotating shaft 7. It has become so.

  The flywheel 122 is formed of an anti-cylindrical disk whose outer peripheral side is thick in the direction of the rotation axis, and the vicinity of the center is fixed to the end of the shaft shaft 121 by a plurality of bolts 123. A plurality of bolt holes are provided in the thick portion on the outer peripheral side of the flywheel 122, and the bolt 35 is tightened through the through hole 32 on the outer peripheral side of the connecting portion 8, thereby fixing the connecting portion 8.

  In FIG. 5, the principal part enlarged view of the load side edge part vicinity of the rotating shaft 7 and the connection part 8 is shown. When the connecting portion 8 is clamped between the rotating shaft 7 and the abutting plate 37 and fixed with bolts, the insulating member 45 </ b> A is installed on the radial step surface 7 b of the rotating shaft 7. The insulating member 45 is made of a thin sheet-like annular member that is substantially the same shape as the radial step surface 7b. That is, the insulating member 45 </ b> A is installed on the contact surface between the radial step surface 7 b and the connecting portion 8.

  In the present embodiment, a paper woven with aramid fibers is used as the insulating paper. The insulating paper has a uniform thickness and an excellent insulating property, and since it is thin, it hardly affects the dimensional difference in the thrust direction with respect to the rotating shaft 7 and the shaft shaft 121 and is preferable. Furthermore, the insulating paper containing an aramid fiber is excellent in terms of necessary heat resistance and mechanical strength. For this reason, this embodiment can be applied to an environment where a strong tightening torque by a high-strength bolt is required and an insulating washer or the like cannot be used for a bolt seat surface or the like.

  Similarly to the insulating member 45A, an insulating member 45B made of substantially the same shape and type of insulating paper is also installed on the contact surface between the contact plate 37 and the connecting portion 8. Further, a sleeve 44 that covers the thread of the bolt 40 from the outer peripheral side is disposed. The sleeve 44 is a cylindrical insulating member made of resin or the like, and has a length that covers at least the rotating shaft step surface 7 b to the seat surface of the bolt 40.

  An insulating member 45A is disposed on the abutting surface between the radial step surface 7b and the connecting portion 8, and an insulating member 45B is disposed on the abutting surface between the connecting portion 8 and the contact plate 44. The rotary shaft 7 and the connecting portion 8 are insulated by being arranged in advance in the space or by previously installing the sleeve 44 on the bolt 40 and fixing with the bolt 40. Since the inner diameter of the hole 30 at the center of the connecting portion 8 is larger than the outer shape of the protruding portion 7b of the rotating shaft 7, it is fixed to the bolt hole positioned in the same direction in the rotating shaft direction via the bolt 40. By doing so, the non-contact of a space | gap is ensured between the hole part 30 and the outer periphery of the protrusion part 7b.

  As described above, according to the first embodiment, the rotating electrical machine 100 and the shaft current path of other devices starting from the rotating electrical machine 100 can be interrupted, and the bearing electrical current in an electrically connected state with the rotating electrical machine 100 can be cut off. Eating can be prevented.

  Further, since the rotating shaft 7 is a common path for all the shaft current paths, it is possible to prevent electrolytic corrosion of all the bearings including other devices only by turning off the rotating shaft 7. . It can be said that it is advantageous in terms of economy and freedom of parts selection.

  Further, in the first embodiment, since insulating paper having excellent heat resistance and mechanical strength is used, there is no restriction on the use environment such as a washer, and furthermore, fine parts such as a washer plate for bolting are unnecessary. It is also superior in assembly work. In particular, in this embodiment, the seat surface of the bolt 40 is configured to be in direct contact with the abutting plate 8, and therefore, when the bolt 40 is turned and tightened, the insulating member 45 </ b> B, like a washer, has rotational friction with the seat surface. This reduces the risk of damage and only receives tightening pressure in the direction of the rotation axis (the same applies to the insulating member 45A).

  In the first embodiment, the abutment plate 8 is provided. However, the configuration is not necessarily essential, and the bolt seat surface and the insulating member 45B may be in direct contact with each other without installing the abutment plate 8. Is possible.

  Moreover, in this embodiment, since a thin insulating member is used, it can be said that there is an advantage that there is no influence on the dimension in the thrust direction.

  Furthermore, since the rotating electrical machine 100 is a cantilever rotating electrical machine used for applications such as a shaft direct connection configuration with other devices, the rotating shaft 7 and the connecting portion 8 are insulated in advance. When assembling with this device, the insulation work is not required, and the effect that the device is easily assembled can be expected.

[Second Embodiment]
In 1st Embodiment, it was the structure which insulates the connection part of the rotating shaft 7 and the connection part 8. FIG. In the second embodiment, one of the characteristics is to insulate the connecting portion between the connecting portion 8 and the flywheel 122. In the following description, it is assumed that the connecting structure of the rotating shaft 7 and the connecting portion 8 is connected not by the structure of the first embodiment but by a structure without electrical insulation. Further, members having the same functions and operations as those of the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  In FIG. 6, the principal part enlarged view of the connection part of the connection part 8 and the flywheel 122 is shown. In the second embodiment, the through hole 32 provided on the outer peripheral side of the connecting portion 8 is positioned in the same direction as the through hole 32 in the rotation axis direction, and the bolt 35 is formed in the bolt hole formed on the end surface of the flywheel 122. Is tightened and fixed.

  An insulating member 50 </ b> A is disposed between the seat surface of the bolt 35 and the connecting portion 8. The insulating member 50A has a ring shape that is larger in diameter than the head of the bolt 35 and has substantially the same shape as the outer periphery of the bolt head. The insulating member 50A is made of an insulating paper in which aramid fibers are woven, similar to the insulating member 45A of the first embodiment.

  An insulating member 50 </ b> B is disposed between the connecting portion 8 and the flywheel 122. The insulating member 50B is an insulating paper in which aramid fibers are woven in the same manner as the insulating member 50A, and has an annular shape that roughly corresponds to the shape of the contact surface between the flywheel 122 and the connecting portion 8.

The bolt 35 is provided with a cylindrical sleeve 53 made of an insulating material such as resin so as to cover the outer peripheral thread. Since the sleeve 53 insulates the bolt 35 from the inner diameter of the through hole 32, the sleeve 53 is preferably at least as long as the thickness of the connecting portion 8.
By this structure, the connection part 8 and the flywheel 122 can be insulated, the path | route of an axial current can be interrupted | blocked, and the electrolytic corrosion of a bearing can be prevented.

In the second embodiment, the connection configuration of the rotating shaft 7 and the connecting portion 8 is not the configuration of the first embodiment but the connection without electrical insulation. However, the first embodiment is the same as the configuration of the second embodiment described above. If the configuration of the embodiment is applied, it is needless to say that the angle for preventing the electrolytic corrosion is further improved.
The first and second embodiments for carrying out the present invention have been described above. However, the present invention is not limited to the above-described configuration, and various modifications and replacements are possible without departing from the spirit of the present invention. is there. For example, the connecting portion 8 does not necessarily have a disk shape, and may be an elliptical shape, various rectangular shapes, a rectangular plate-like member that linearly includes only a bolting position, or a combination thereof.

  Further, it is not always necessary to provide the protruding portion 7 a at the load side end of the rotating shaft 7, and the load side end surface of the rotating shaft 7 may be a flat surface.

  Furthermore, the connection configuration of the rotary shaft 7 and the connecting portion 8 described above may be applied to the configuration of the flywheel 122 of the engine 120 and the shaft shaft 121 connected to the rotary electric machine 100 instead of the rotary electric machine 100.

  Further, the armature configuration of the rotating electric machine 100 is not limited to the radial gap type, but may be an axial gap type.

DESCRIPTION OF SYMBOLS 1 ... Outer housing, 2 ... Inner housing, 3 ... End bracket, 4 ... Stator, 5 ... Rotor, 6 ... Bearing, 7 ... Rotating shaft, 7a ... Projection part, 7b ... Radial step surface, 7c ... Internal gear , 8 ... connecting part, 30 ... hole part, 31 · 32 · 39 ... through hole, 37 ... contact plate, 35 · 40 ... bolt, 40a ... bolt hole, 44 · 53 ... sleeve, 45A ... insulating member, 45B ... insulating Members, 50A, 50B, insulating members,
77A / 77B / 77C ... Return path of shaft current, 100 ... Rotating electric machine, 120 ... Engine, 121 ... Shaft shaft, 122 ... Fly wheel, 125 ... Fly wheel housing, 130 ... Pump, 131 ... Bearing, 132 ... Pump shaft, 132a ... External gear

Claims (8)

A rotor arranged face-to-face with the stator and a fixed rotation shaft;
A bearing disposed near one end of the rotating shaft;
The radial end is larger than the rotating shaft, the central portion is opposed to the other end surface of the rotating shaft, extends in the rotating shaft radial direction, and is connected to another rotating body that rotates in the same direction as the rotating shaft. A connecting part to be
One-sided holding having a substantially cylindrical inner cylinder space with one end face opened, and a housing that supports the bearing at the other end face and arranges the stator, the rotor, and the rotation shaft in the inner cylinder space. A rotating electric machine of the type,
A sheet-like first insulating member disposed between the other end surface of the rotating shaft and the contact surface with the connecting portion;
A plurality of bolts for fastening the connecting portion to the other end face side of the rotating shaft from the rotating shaft direction;
A sheet-like second insulating member disposed between the connecting portion and the contact surface with the bolt;
A sleeve for insulating the outer periphery of the bolt;
A single-shaft rotary electric machine having A single-shaft rotary electric machine according to claim 1,
A single-axis rotary electric machine having a through-hole penetrating the bolt and having a contact plate disposed between the second insulating member and the bolt seat surface. A single-shaft rotary electric machine according to claim 1,
A single-shaft rotary electric machine in which the first and second insulating members are insulating paper. A single-shaft rotary electric machine according to claim 3,
A single-shaft rotating electric machine in which the insulating paper includes aramid fibers. A single-shaft rotary electric machine according to claim 1,
A single-shaft-type rotating electrical machine in which an opening side end portion of the housing is electrically connected to a housing of another device including the other rotating body. A stator, a rotor fixed to the rotating shaft, a bearing that rotatably supports one end portion of the rotating shaft, and a substantially cylindrical inner cylinder space that opens on one end side; A rotating electrical machine having a housing that supports the bearing and disposes the stator, the rotor, the rotating shaft, and the bearing in the inner cylindrical space;
A first device that has a housing electrically connected to the opening end of the housing and has a shaft that rotates in the same direction as the rotating shaft inside the housing;
A first connecting portion having a radial end portion larger than the rotation shaft and extending in a rotation shaft radial direction with a central portion facing the other end surface of the rotation shaft;
A second connecting portion having a larger radial end than the shaft and extending in the rotation axis direction with the central portion facing the end surface of the shaft;
The rotating electrical machine integrated device in which the first connecting portion and the second connecting portion are connected on the radial end side so that the other end surface of the rotating shaft and the end surface of the shaft face each other. ,
A sheet-like first insulating member disposed between the other end surface of the rotating shaft and the contact surface of the connecting portion;
A plurality of bolts for fastening the connecting portion to the other end face side of the rotating shaft from the rotating shaft direction;
A sheet-like second insulating member disposed between the bolt and a contact surface with the bolt;
A sleeve for insulating the outer periphery of the bolt;
A rotating electrical machine integrated device. The rotating electrical machine integrated device according to claim 6,
A rotating electrical machine integrated device having a through-hole penetrating the bolt and having a contact plate disposed between the second insulating member and the bolt seat surface. A rotor arranged face-to-face with the stator and a fixed rotation shaft;
A bearing disposed near one end of the rotating shaft;
Connection for connecting to another rotating body that has a larger radial end than the rotary shaft, extends in the radial direction of the rotary shaft from near the other end of the rotary shaft, and rotates in the same direction as the rotary shaft And
One-sided holding having a substantially cylindrical inner cylinder space with one end face opened, and a housing that supports the bearing at the other end face and arranges the stator, the rotor, and the rotation shaft in the inner cylinder space. A rotating electric machine of the type,
The connecting portion has a plurality of through holes at regular intervals along the outer periphery of the connecting portion with respect to the rotation axis direction,
A bolt for fastening from the rotational axis direction, another connecting portion extending in a radial direction from an end face of the other rotating body, and forming a bolt hole corresponding to the through hole, and the connecting portion,
A seat-like first insulating member disposed on a contact surface between the bolt seating surface and the connecting portion;
A sheet-like second insulating member disposed on the contact surface between the other connecting portion and the connecting portion;
A rotating electrical machine having a sleeve that insulates an outer periphery of the bolt and an inner periphery of the through hole.

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