654151IN01 English translation of application documents for filing (Claims, Specifications, and Abstract)
DESCRIPTION
Title of Invention: Rotating electrical machine for vehicle
Technical Field [0001]
The present invention relates to a rotating electrical machine for vehicle, in particular, to a structure for mounting a rotating electrical machine for vehicle to a rotating electrical machine mounting part such as an engine of a vehicle.
Background Art
[0002]
The engine room of a vehicle tends to have a reduced size due to the security or the increase of the size of the space inside the passenger compartment, and the mountability of the rotating electrical machine as an auxiliary machine deteriorates. For that reason, regarding the attachment of the rotating electrical machine for vehicle to an engine, for example, by adopting a structure in which attachment of a rotating electrical machine for vehicle to an engine is completed in a work in only one direction, the attachability is improved. As an example of its typical structure, a bush part, which is a part of a mounting structure of a rotating electrical machine for vehicle to an engine, is constituted by a nut and a bush which is a separate component from the nut. (See Patent Literature 2)
Also, in order to reduce the weight of an electric rotating electrical machine for vehicle, an aluminum external facing is frequently used. Since it is required to withstand the vibration environment of the vehicle, countermeasures have been taken to improve vibration resistance and abrasion resistance. (See Patent Literatures 1 and 2)
Patent Literature [0003]
[Patent Literature 1] JP4297070B2 [Patent Literature 2] JP4632725B2
Disclosure of Invention Technical Problem
[0004]
In a conventional rotating electrical machine for vehicles, wherein measures are taken to protect the bush of the AC rotating electrical machine by having a smaller diameter than the press-fitting diameter of the bracket on the side abutting on the engine mount part as in Patent Literature 1, since the contact pressure of

654151IN01 English translation of application documents for filing (Claims, Specifications, and Abstract)
the contact pressure between the bush and the engine mount becomes large, as the engine side is made of aluminum material, the engine side is easily damaged.
In the case where the rotating electrical machine is exchanged when the rotating electrical machine is damaged and in the case where the engine side is exchanged because the engine side is damaged, the burden on the user for the amount of money to be exchanged is greater on the engine side.
If the area of the abutting surface is made larger in order to reduce the contact pressure while maintaining this structure and shape, by increasing the diameter of the stay hole on the press-fitting side of the bracket on the rotating electrical machine side, it is necessary to enlarge the diameter, and if the bracket on the side of the rotating electrical machine has the same outer diameter and the diameter of the stay hole is large, the wall thickness of the bracket on the rotating electrical machine side made of aluminum becomes smaller on the side of the engine mount side around the stay hole, and there is concern about vibration resistance. If the outer diameter of the bracket on the side of the rotating electrical machine is also increased, the size of the entire rotating electrical machine becomes large, and the mountability on the vehicle is deteriorated.
In addition, since the convex part (reference numeral 220 in Patent Document 1) for preventing the rotation of the bush is positioned on the side opposite to the engine mount part towards the bush and attached to the generator side stay part, the diameter of the stay hole on the press-fitting side of the bracket on the rotating electrical machine side cannot be increased. Therefore, since the contact surface cannot be enlarged by increasing the area of the contact surface, the contact pressure cannot be reduced.
[0005]
As a structure capable of enlarging the area of the contact surface, the structure is described in Patent Literature 2. In the structure of Patent Document 2, since the nut and the bush are separate parts, maintenance was difficult when the threaded part of the nut was damaged. Since the nut and the bush are separated, the concentricity between the press-fitting part of the generator bracket and the hexagonal part of the generator bracket must be increased, which is a concern from the viewpoint of the accuracy of the work. Also, when attaching the generator to the engine, the installer had to move the nut by touching it and center the fastening g bolt.
[0006]
In addition, when viewed from the vehicle side, commonalization of the rotating electrical machine for vehicle, which is an auxiliary machine to new types of vehicles, old models,

654151IN01 English translation of application documents for filing (Claims, Specifications, and Abstract)
different types of vehicles, etc., is proceeding, for example, there are cases where a new rotating electrical machine for vehicle is adopted in an existing engine. In this case, the rotating electrical machine assembling structure which is the same as the structure and the shape of the existing vehicle adopting the rotating electrical machine assembling structure of the structure and the shape for reducing the surface pressure by increasing the area of the fastening surface between the rotating electrical machine and the engine, as in Patent Document 1, is adopted as a bush having a smaller diameter than the press-fitting diameter of the bracket on the side to be brought into contact with the engine mount, there is a concern that the surface pressure will be higher than the existing model, causing problems.
Further, in the conventional rotating electrical machine for vehicle, in the structure of the patent document 2 in which a general bush part is composed of a nut and a bush of a separate part, by fastening the nut and the fastening bolt, the separate part bush is pushed by the nut moving with the fastening, whereby the separate parts bush comes in contact with the engine bracket, and the rotating electrical machine is attached to the engine. In this case, the threaded part is only on the nut, moreover, since the nut is disposed at a position farthest from the bolt insertion side, a somewhat long fastening bolt is required. In the current vehicle environment, the engine room tends to be small, if the structure requires the use of a long fastening bolt, when attaching and detaching the fastening bolt, the fastening bolt may come into contact with the vehicle frame, in some cases, it is also assumed that the mountability on the vehicle is deteriorated such as not being able to attach / detach the fastening bolt.
Also, during maintenance of the vehicle, the rotating electrical machine for vehicle is repeatedly attached and detached from the vehicle several times, but in the structure of Patent Document 2, since the length of the thread part of the nut is short, separate bush and nut parts are removed, it was necessary to install a new separate part bush and nut. In addition, the bush has only a press-fitted part, the shaft length is relatively short, and there is also a problem that it is impossible to provide a screw part.
[0007]
The present invention has been made in view of the above-described conventional circumstances, and it is an object of the present invention to provide a simple and compact bush structure for attaching a rotating electrical machine for vehicle to a rotating electrical machine mounting part on a vehicle with a simple operation and properly.

654151IN01 English translation of application documents for filing (Claims, Specifications, and Abstract)
Solution to Problem
[0008]
A rotating electrical machine for vehicle according to the present invention includes a first attachment leg provided on a bracket of the rotating electrical machine for vehicle and having a mounting leg side fastening bolt insertion hole, and a second attachment leg provided on the bracket at a predetermined distance from the first attachment leg and having a fitting hole into which a bush having a female screw is press-fitted, wherein the rotating electrical machine for vehicle is detachably attached to a mounting part on the vehicle side by threaded engagement with a female screw of the bush and a male screw of the fastening bolt which is inserted through a mounting part side fastening bolt insertion hole and the mounting leg side fastening bolt insertion hole, and wherein: the bush includes a first tubular part, a second tubular part, and a ring-shaped flange part which makes surface contact with a mounting part on the vehicle side and is in press contact therewith in the state of the threaded engagement, the first tubular part of the bush, the second tubular part of the bush, and the ring-shaped flange part of the bush are formed integrally, a diameter of the ring-shaped flange part is larger than both a diameter of the first tubular part and a diameter of the second tubular part, at least one of the first tubular part and the second tubular part is a press-fitting part press-fitted into the fitting hole of the second attachment leg, a bush side anti-rotation part is integrally formed on the bush, and an attachment leg side anti-rotation part engaging with the bush side anti-rotation part to stop the rotation of the bush in a state in which the bush is inserted and press-fitted into the fitting hole at the press-fitting part is formed in the fitting hole.
Advantageous Effect of Invention
[0009]
As the rotating electrical machine for vehicle according to the present invention includes a first attachment leg provided on a bracket of the rotating electrical machine for vehicle and having a mounting leg side fastening bolt insertion hole, and a second attachment leg provided on the bracket at a predetermined distance from the first attachment leg and having a fitting hole into which a bush having a female screw is press-fitted, wherein the rotating electrical machine for vehicle is detachably attached to a mounting part on the vehicle side by threaded engagement with a female screw of the bush and a male screw of the fastening bolt which is inserted through a mounting part side fastening bolt insertion hole and the mounting leg side fastening bolt insertion hole, and wherein: the bush includes a first tubular part, a second tubular

654151IN01 English translation of application documents for filing (Claims, Specifications, and Abstract)
part, and a ring-shaped flange part which makes surface contact with a mounting part on the vehicle side and is in press contact therewith in the state of the threaded engagement, the first tubular part of the bush, the second tubular part of the bush, and the ring-shaped flange part of the bush are formed integrally, a diameter of the ring-shaped flange part is larger than both a diameter of the first tubular part and a diameter of the second tubular part, at least one of the first tubular part and the second tubular part is a press-fitting part press-fitted into the fitting hole of the second attachment leg, a bush side anti-rotation part is integrally formed on the bush, and an attachment leg side anti-rotation part engaging with the bush side anti-rotation part to stop the rotation of the bush in a state in which the bush is inserted and press-fitted into the fitting hole at the press-fitting part is formed in the fitting hole, with a simple and compact bush structure, attachment of the rotating electrical machine for vehicle to the rotating electrical machine mounting part on the vehicle side can be performed with a simple operation and properly.
Brief Description of Drawings
[0010]
Fig. 1 is a longitudinal sectional side view of an example of a rotating electrical machine for vehicle, showing a first embodiment of the present invention.
Fig. 2 is an enlarged view showing a bush in a rotating electrical machine for vehicle illustrated in Fig. 1, in which (a) is an external view of an upper half and a cross-sectional view of a lower half, and (b) is an external view of the bush viewed from the back side in the axial direction.
Fig. 3 is an enlarged view showing a structure of an attachment leg side corresponding to a bush in rotating electrical machine for vehicle exemplified in Fig. 1, in which (a) is a longitudinal sectional side view, and (b) is a view as seen from the back side in the axial direction
Fig. 4 is a longitudinal cross-sectional view showing another embodiment of the rotating electrical machine for vehicle according to the second embodiment of the present invention.
Fig. 5 is a view showing the second embodiment of the present invention in an enlarged view of a bush in the rotating electrical machine for vehicle shown in Fig. 4, in which (a) is an external view of an upper half, a cross-sectional view is a lower half, and (b) is an external view of the bush viewed from the back side in the axial direction.
Fig. 6 is an enlarged view showing the structure of the attachment leg side corresponding to the bush in the rotating

654151IN01 English translation of application documents for filing (Claims, Specifications, and Abstract)
electrical machine for vehicle exemplified in Fig. 4, in which (a) is a longitudinal sectional side view, and (b) is a view as seen from the back side in the axial direction.
Fig. 7 is a longitudinal sectional side view showing a third embodiment of the present invention, showing another example of the rotating electrical machine for vehicle.
Fig. 8 is an enlarged view of a bush in the rotating electrical machine for vehicle illustrated in Fig. 7, in which (a) is an external view of the upper half and a cross-sectional view of the lower half, and (b) is an external view of the bush viewed from the back side in the axial direction.
Fig. 9 is an enlarged view showing the structure of the attachment leg side corresponding to the bush in the rotating electrical machine for vehicle exemplified in Fig. 7, in which (a) is a longitudinal sectional side view, and (b) is an external view of the bush viewed from the back side in the axial direction.
Fig. 10 is a longitudinal sectional side view showing a fourth embodiment of the present invention, showing another example of the rotating electrical machine for vehicle.
Fig. 11 is an enlarged view of a bush in the rotating electrical machine for vehicle illustrated in Fig. 10, in which (a) is an external view of the upper half and a cross-sectional view is a lower half, and (b) is an external view of the bush viewed from the back side in the axial direction.
Fig. 12 is an enlarged view showing a structure of a mounting leg side corresponding to a bush in the rotating electrical machine for vehicle exemplified in Fig. 10, in which (a) is a longitudinal sectional side view, and (b) is a view as seen from the back side in the axial direction.
Fig. 13 is a longitudinal sectional side view showing a fifth embodiment of the present invention, showing another example of the rotating electrical machine for vehicle.
Fig. 14 is an enlarged view of a bush of the rotating electrical machine for vehicle illustrated in Fig. 13, in which (a) is an external view of the upper half and a cross-sectional view of the lower half, and (b) is an external view of the bush viewed from the back side in the axial direction.
Fig. 15 is an enlarged view showing the structure of the attachment leg side corresponding to the bush in the rotating electrical machine for vehicle exemplified in Fig. 13, in which (a) is a longitudinal sectional side view, and (b) is an external view of the bush viewed from the back side in the axial direction.
Description of Embodiments [0011] Hereinafter, embodiments of a rotating electrical machine

654151IN01 English translation of application documents for filing (Claims, Specifications, and Abstract)
for vehicle according to the present invention will be described with reference to the drawings. In the following drawings, the scales of each component may be different from the actual scales, and illustration of configurations not related to the features of the present invention is omitted for an easy understanding.
[0012] First Embodiment
Hereinafter, a first embodiment of the present invention will be described with reference to Figs. 1, 2, and 3.
Fig. 2 is an enlarged view of a bush in a rotating electrical machine for vehicle exemplified in Fig. 1, in which (a) is an external view of the upper half and the lower half is a cross section, and (b) is a side view showing the bush as viewed from the rear side in the axial direction. Fig. 3 is an enlarged view showing the structure of the attachment leg side corresponding to the bush in the rotating electrical machine for vehicle exemplified in Fig. 1, (a) is a longitudinal sectional side view, and (b) is a view seen in the axial direction from the rear side.
[0013]
As shown in Figs. 1, 2, and 3, the rotating electrical machine 1 for vehicle of the first embodiment includes an aluminum mounting part 2 on the vehicle side, a mounting part side fastening bolt insertion hole 2a, an aluminum bracket (front side bracket) 11, an aluminum first attachment leg 111, an attachment leg side fastening bolt insertion hole Ilia, a stator 12, an aluminum bracket (rear side bracket) 13, an aluminum second attachment leg 131, a fitting hole 1311, an attachment leg side anti-rotation part 1312, a press-fitting part 1313, a ring-shaped flange part receiving a concave part 1314, a pulley 14, a carbon steel fastening bolt 15, a male screw 15s of the fastening bolt, a fastening bolt head 15h, a bush 16, a first tubular part 161, a second tubular part 162, a ring-shaped flange part 163, a press-contact surface 163a with the attachment part on the vehicle side, a bush side anti-rotation part 164, a press-fitting part 165 and a female screw 16s.
It should be noted that the pulley 14 is coupled to a crank pulley of a vehicle engine by a belt and transmits the driving force of the engine to the rotating electrical machine 1 for vehicle such as a generator.
[0014]
The first attachment leg 111 provided on the bracket 11 and having the attachment leg side fastening bolt insertion hole Ilia, and the second attachment leg 131 is provided on the bracket 13 at a predetermined distance from the first attachment leg 111 and having the fitting hole 1311 into which the bush 16 having the

654151IN01 English translation of application documents for filing (Claims, Specifications, and Abstract)
female screw 16s press-fitted.
The rotating electrical machine 1 for vehicle is detachably attached to the mounting part 2 by threaded engagement with the female screw 16s of the bush 16 and the male screw 15s of the fastening bolt 15 which is inserted through the mounting part side fastening bolt insertion hole 2a and the mounting leg side fastening bolt insertion hole Ilia.
The bush 16 has the first tubular part 161, the second tubular part 162, and the ring-shaped flange part 163 which makes surface contact with the mounting part 2 and is in press contact therewith in the state of the threaded engagement. The first tubular part 161 of the bush 16, the second tubular part 162 of the bush 16, and the ring-shaped flange part 163 of the bush 16 are formed integrally. A diameter of the ring-shaped flange part 163 is larger than both a diameter of the first tubular part 161 and a diameter of the second tubular part 162.
At least one of the first tubular part 161 and the second tubular part 162 is press-fitted into the press-fitting part 1313 formed in the fitting hole 1311. From another point of view, at least one of the first tubular part 161 and the second tubular part 162 serves as the press-fitting part 165 of the bush 16.
A bush side anti-rotation part 164 is integrally formed on the bush 16. In a state in which the bush 16 is inserted and press-fitted into the fitting hole 1311 at the press-fitting part 1313, the attachment leg side anti-rotation part 1312 engaging with the bush side anti-rotation part 164 to stop the rotation of the bush 16 is formed in the hole.
[0015]
The second tubular part 162 is positioned between the first tubular part 161 and the ring-shaped flange part 163, the bush side anti-rotation part 164 is formed in the first tubular part 161, and the second tubular part 162 is press-fitted into the fitting hole 1311.
[0016]
Mounting of the rotating electrical machine 1 to the engine for vehicle is performed as follows.
Fastening bolt 15 is inserted into the attachment leg side fastening bolt insertion hole Ilia of the first attachment leg 111 of the rotating electrical machine 1, the mounting part side fastening bolt insertion hole 2a of the mounting part 2 on the vehicle side, and the bush 16 press-fitted into the fitting hole 1311 of the second attachment leg 131 of the rotating electrical machine 1, and then the male screw 15s at the distal end of the fastening bolt 15 and the female screw in the hole of the tubular bush 16 are screwed together, when the fastening bolt head 15h of the fastening bolt 15 is rotated in the tightening direction by a

654151IN01 English translation of application documents for filing (Claims, Specifications, and Abstract)
jig, and according to the tightening force of the bush 16 and the fastening bolt 15 due to being rotated by the fastening bolt head 15h, the bush 16 moves toward the mounting part 2 of the vehicle, thereby the ring-shaped flange part 163 of the bush 16 comes into surface contact with the surface of the mounting part 2 on the side of the bush 16 and is pressed against the mounting part 2.
Therefore, with a simple and compact bush structure, the mounting of the rotating electrical machine for the vehicle to the rotating electrical machine mounting part on the vehicle side can be done easily and properly.
Since the ring-shaped flange part 163 has a diameter larger than other parts of the bush 16, i.e. the first tubular part 161 and the second tubular part 162, thereby the contact area with the mounting part 2 on the vehicle side is wider than that of the conventional device, this causes that the surface pressure of the mounting part 2 on the vehicle side is low, therefore it is possible to avoid damage to the mounting part 2 on the vehicle side.— Further, when the bush 16 is grounded to the mounting part 2 on the vehicle side, since the contact area is wider as compared with the conventional device, the ground of the bush 16 is reliably performed.
[0017]
In addition, in case that the tubular bush 16 is made of iron, and as- the outer peripheral surface of the bush 16 is plated with zinc plating and so on, the sticking due to rusting between the aluminum attachment leg 131 and the bush 16 is prevented, it becomes possible to attach and detach the rotating electrical machine for the vehicle several times during vehicle maintenance.
[0018]
Although the bush 16 is attached t6 the second attachment leg 131 in the first embodiment, but it may be attached to the first attachment leg 111.
[0019] Second Embodiment
The second embodiment of the present invention will be described below with reference to Figs. 4, 5, and 6.
Fig. 4 is a longitudinal cross-sectional view showing another embodiment of the rotating electrical machine for vehicle, Fig. 5 is an enlarged view of a bush in the rotating electrical machine for vehicle illustrated in Fig. 4, in which (a) is an external view of the upper half, and (b) is an external view of the bush viewed from the rear side in the axial direction. Fig. 6 is an enlarged view showing the structure of the mounting leg side corresponding to the bush in the rotating electrical machine for vehicle shown in Fig. 4, in which (a) is a longitudinal sectional

654151IN01 English translation of application documents for filing (Claims, Specifications, and Abstract)
side view, and (b) is a view seen in the axial direction from the rear side.
In the description of the second embodiment, only differences from the first embodiment will be described, and explanation of the same or corresponding parts as in the first embodiment will be omitted.
[0020]
In the second embodiment, as exemplified in Fig. 4, Fig. 5, and Fig. 6, the bush side anti-rotation part 164 is a groove-shaped bush side anti-rotation part formed across both of the first tubular part 161 and the second tubular part 162.
The attachment leg side anti-rotation part 1312 is a projection-like attachment leg side anti-rotation part engaged with the groove-like bush side anti-rotation part 164.
[0021]
Both the groove-shaped bush side anti-rotation part 164 and the projection-like protruded attachment leg part side anti-rotation part 1312 extend in the extending direction of the fastening bolt 15.
[0022]
The projection-shaped attachment leg side anti-rotation part 1312 extending in the extending direction of the fastening bolt 15, and the groove-shaped bush side anti-rotation part 164 extending in the extending direction of the fastening bolt 15 are engaged with each other, the rotation of the bush 16 is stopped when the fastening bolt 15 is tightened and when the fastening bolt 15 is untightened.
[0023]
Further, the groove-shaped bush side anti-rotation part 164 may be formed on at least one of the first tubular part 161 and the second tubular part 162.
[0024] Third Embodiment
The third embodiment of the present invention will be described below with reference to Figs. 7, 8, and 9.
Fig. 7 is an enlarged longitudinal side view showing another example of the -i** rotating electrical machine for vehicle, Fig. 8 is an enlarged view of the bush in the rotating electrical machine for vehicle shown in Fig. 7, in which (a) is an external view of the upper half, and (b) is an external view of the bush viewed from the back side in the axial direction. Fig. 9 is an enlarged view showing the structure of the attachment leg side corresponding to the bush in the rotating electrical machine for vehicle exemplified in Fig. 7, in which (a) is a longitudinal sectional side view, and (b) is a view seen in the axial direction from the rear side.

654151IN01 English translation of application documents for filing (Claims, Specifications, and Abstract)
Further, in the description of the third embodiment, only differences from the first embodiment will be described, and explanation of the same or corresponding parts as in the first embodiment will be omitted.
[0025]
In the third embodiment, as exemplified in Figs. 7, 8, and 9, the bush side anti-rotation part 164 is formed in a shape obtained by cutting a part of the outer periphery on the outer periphery of the ring-shaped flange part 163.
The attachment leg side anti-rotation part 1312 is formed in a shape obtained by cutting a part of the inner periphery into a ring-shaped flange part receiving a concave part 1314 which is a part of the fitting hole 1311 and accommodates the ring-shaped flange part 163.
[0026]
The bush side anti-rotation part 164 formed in a shape obtained by cutting off part of the outer periphery and the attachment leg side anti-rotation part 1312 formed in a shape in which the part of the inner periphery is cut are engaged with each other, the rotation of the bush 16 is stopped when the fastening bolt 15 is tightened and when the fastening bolt 15 is untightened.
[0027] Fourth Embodiment
The fourth embodiment of the present invention will be described with reference to Figs. 10, 11, and 12.
Fig. 10 is a longitudinal sectional side view showing another example of the rotating electrical machine for vehicle, and Fig. 11 is an enlarged view of the bush in the rotating electrical machine for vehicle shown in Fig. 10, in which (a) is an external view of the upper half, and (b) is an external view of the bush viewed from the rear side in the axial direction. Fig. 12 is an enlarged view of the structure of the attachment leg side corresponding to the bush in the rotating electrical machine for vehicle exemplified in Fig. 10, in which (a) is a longitudinal sectional side view, and (b) is a view seen in the axial direction from the rear side.
Further, in the description of the fourth embodiment, only points different from the first embodiment will be explained, and explanation of the same or corresponding parts as in the first embodiment will be omitted.
[0028]
In the fourth embodiment, as exemplified in Fig. 10, Fig. 11, and Fig. 12, the bush side anti-rotation part 164 straddles

654151IN01 English translation of application documents for filing (Claims, Specifications, and Abstract)
both the first tubular part 161 and the second tubular part 162, and is a planar bush side anti-rotation part formed in a shape in which a part of continuous outer peripheries of the first tubular part 161 and the second tubular part 162 is cut away.
The attachment leg side anti-rotation part 1312 is formed in the hole of the fitting hole 1311, and is a planar attachment leg side anti-rotation part engaged with the planar bush side anti-rotation part 164.
[0029]
The planar attachment leg side anti-rotation part 1312 and the planar bush side anti-rotation part 164 are engaged with each other, the rotation of the bush 16 is stopped when the fastening bolt 15 is tightened and when the fastening bolt 15 is untightened.
[0030]
Further, the planar bush side anti-rotation part 164 may be formed on at least one of the first tubular part 161 and the second tubular part 162.
[0031] Fifth Embodiment
The fifth embodiment of the present invention will be described with reference to Figs. 13, 14, and 15.
Fig. 13 is a longitudinal sectional side view showing another example of the rotating electrical machine for vehicle, Fig. 14 is an enlarged view of the bush in the rotating electrical machine for vehicle shown in Fig. 13, in which (a) is an external view of the upper half, and (b) is an external view of the bush — viewed from the rear side in the axial direction. Fig. 15 is an enlarged view showing the structure of the attachment leg side corresponding to the bush in the rotating electrical machine for vehicle exemplified in Fig. 13, wherein (a) is a longitudinal sectional side view, and (b) is a view seen in the axial direction from the rear side.
In the description of the fifth embodiment, only differences from the first embodiment will be explained, and explanation of the same or corresponding parts as in the first embodiment will be omitted.
[0032]
In the fifth embodiment, as exemplified in Figs. 13, 14, and 15, the first tubular part 161 is a press-fitting part 165 press-fitted into the fitting hole 1311, and a polygonal bush side anti-rotation part 164 is formed on the outer periphery of the second tubular part 162. The polygonal bush side anti-rotation part 164 is engaged with the polygonal attachment leg side anti-rotation part 1312.
[0033]

654151IN01 English translation of application documents for filing (Claims, Specifications, and Abstract)
The polygonal bush side anti-rotation part 164 and the polygonal attachment leg side anti-rotation part 1312 are engaged with each other, and the rotation of the bush 16 is stopped when the fastening bolt 15 is tightened and when the fastening bolt 15 is untightened.
[0034]
Note that the present invention may be modified or omitted from each embodiment as appropriate within the scope of the invention.
Note that, in each drawing, the same symbols denote the same or equivalent portions.
Reference Signs List [0035]
1 rotating electrical machine for vehicle,
2 mounting part on the vehicle side,
2a mounting part side fastening bolt insertion hole,
11 bracket (Front side bracket),
111 first attachment leg,
Ilia attachment leg side fastening bolt insertion hole,
12 stator,
13 bracket (Rear side bracket),
131 second attachment leg,
1311 fitting hole,
1312 attachment leg side anti-rotation part,
1313 press-fitting part,
1314 ring-shaped flange part receiving concave part,

14 pulley,
15 fastening bolt,
15s male screw of fastening bolt, 15h fastening bolt head,
16 bush,
161 first tubular part,
162 second tubular part,
163 ring-shaped flange part,
163a pressure contact surface with mounting part on the vehicle
side,
164 bush side anti-rotation part,
165 press-fitting part,
16s female screw.

654151IN01 English translation of application documents for filing (Claims, Specifications, and Abstract)
CLAIMS
[Claim 1]
A rotating electrical machine for vehicle comprising a first attachment leg provided on a bracket of the rotating electrical machine for vehicle and having a mounting leg side fastening bolt insertion hole, and a second attachment leg provided on the bracket at a predetermined distance from the first attachment leg and having a fitting hole into which a bush having a female screw is press-fitted, wherein the rotating electrical machine for vehicle is detachably attached to a mounting part on the vehicle side by threaded engagement with a female screw of the bush and a male screw of the fastening bolt which is inserted through a mounting part side fastening bolt insertion hole and the mounting leg side fastening bolt insertion hole, and wherein:
the bush includes a first tubular part, a second tubular part, and a ring-shaped flange part which makes surface contact with a mounting part on the vehicle side and is in press contact therewith in the state of the threaded engagement,
the first tubular part of the bush, the second tubular part of the bush, and the ring-shaped flange part of the bush are formed integrally,
a diameter of the ring-shaped flange part is larger than both a diameter of the first tubular part and a diameter of the second tubular part,
at least one of the first tubular part and the second tubular part is a press-fitting part press-fitted into the fitting hole of the second attachment leg,
a bush side anti-rotation part is integrally formed on the bush, and
an attachment leg side anti-rotation part engaging with the bush side anti-rotation part to stop the rotation of the bush in a state in which the bush is inserted and press-fitted into the fitting hole at the press-fitting part is formed in the fitting hole.
[Claim 2]
The rotating electrical machine for vehicle according to claim 1, wherein
the second tubular part is positioned between the first tubular part and the ring-shaped flange part,
The bush side anti-rotation part is formed in the first tubular part, and
the second tubular part press-fitted into the fitting hole.
:*
[Claim 3]

654151IN01 English translation of application documents for filing (Claims, Specifications, and Abstract)
The rotating electrical machine for vehicle according to claim 1, wherein
the bush side anti-rotation part is a groove-shaped bush side anti-rotation part formed on at least one of the first tubular part and the second tubular part, and
the attachment leg side anti-rotation part is a protruded attachment leg side anti-rotation part engaging with the groove-shaped bush side anti-rotation part.
[Claim 4]
The rotating electrical machine for vehicle according to claim 1, wherein
the bush side anti-rotation part is formed on an outer periphery of the ring-shaped flange part, and
the attachment leg side anti-rotation part is formed in the ring-shaped flange part receiving a concave part which is a part of the fitting hole and accommodates the ring-shaped flange part.
[Claim 5]
The rotating electrical machine for vehicle according to claim 1, wherein
the bush side anti-rotation part is a planar bush side anti-rotation part formed on the outer periphery of at least one of the first tubular part and the second tubular part, and
the attachment leg side anti-rotation part is a planar attachment leg side anti-rotation part formed in the fitting hole and engaging with the planar bush side anti-rotation part.
[Claim 6]
The rotating electrical machine for vehicle according to
claim 1, wherein
the first tubular part is the press-fitted part,
the bush side anti-rotation part is formed on the outer
periphery of the second tubular part.
[Claim 7]
The rotating electrical machine for vehicle according to any one of claims 1 to 6, wherein
the first attachment leg, the second attachment leg, and the attachment part are both made of aluminum,
the fastening bolt is made of carbon steel, and
the bush is made of iron and its outer peripheral surface is plated.