JP4196840B2 - Mounting structure for vehicle alternator - Google Patents

Description

  The present invention relates to a vehicle AC generator having a side mount structure that is fixed to a mounting bracket on an engine side by tightening a bolt.

2. Description of the Related Art Conventionally, as an example of a method for attaching an AC generator to a mounting bracket on the engine side, a method of tightening and fixing a bolt from a direction orthogonal to the rotating shaft of the generator, a so-called side mount structure is known.
For example, in the side-mounted AC generator described in Patent Document 1, mounting stays are provided on both sides in the radial direction (for example, the top-and-bottom direction) across the rotating shaft. Bolt through holes are formed in the orthogonal direction.

In addition, one mounting stay has a bolt through hole having a minimum diameter (an inner diameter slightly larger than the outer diameter of the bolt), and the other mounting stay has a bolt through hole having an elongated hole cross-sectional shape. Yes. Accordingly, it is described that it is possible to absorb the positional deviation between the bolt through hole and the female screw hole formed in the mounting bracket, and the mounting accuracy of the AC generator can be improved.
JP 2002-17062 A

  However, in the known technique of Patent Document 1, one bolt through hole has a minimum diameter, but the minimum diameter is always an inner diameter larger than the outer diameter of the bolt inserted into the bolt through hole, The difference between the two (the inner diameter of the bolt through hole and the outer diameter of the bolt) is a factor causing an error (shift) in the mounting position of the AC generator. As a result, when the alignment between the crank pulley of the engine and the pulley of the AC generator is shifted, there arises a problem that the belt is prematurely worn and abnormal noise is generated.

Further, in recent years, there is a demand that the AC generator is directly driven not by belt driving but by coupling or the like, but it is needless to say that the accuracy of the axial center of the AC generator is required even in this case.
The present invention has been made based on the above circumstances, and an object thereof is to provide a mounting bracket and an alternating current in a side mount structure vehicle AC generator fixed to a mounting bracket (mounting seat surface) on the engine side. By providing positioning means on the generator, the accuracy of the mounting position of the AC generator relative to the mounting bracket is improved.

(Invention of Claim 1)
The present invention has a plurality of mounting stays provided integrally with the housing, and the mounting stays are formed with bolt holes or bolt grooves that open in a direction orthogonal to the rotation shaft, and are mounted on the mounting seat surface on the engine side. On the other hand, for vehicles in which the mounting surface of the mounting stay is pressed directly or indirectly, and the bolt inserted through the bolt hole or bolt groove is screwed into the female screw hole formed on the mounting seat surface on the engine side and fixed. An alternator mounting structure,
The housing is provided with a first reference portion and a second reference portion that serve as a reference for determining the mounting position of the AC generator with respect to the mounting seat surface on the engine side. Includes a first restriction surface for positioning the first reference portion on one side in the vertical direction, and a second reference portion for positioning the second reference portion on one side in the axial direction (front-rear direction) parallel to the rotation axis. And is provided with a regulation surface.

  According to the above configuration, the mounting surface of the mounting stay provided integrally with the housing of the alternator is directly or indirectly pressed against the mounting seat surface on the engine side, and the first reference portion provided on the housing is provided. Is positioned on one side in the vertical direction by the first restriction surface on the engine side, and the second reference portion provided on the housing is positioned on one side in the axial direction by the second restriction surface on the engine side. . As a result, when installing the alternator, the mounting position is restrained in three directions (front and rear, up and down, left and right) on the mounting seat surface on the engine side and the first and second regulating surfaces, The mounting position accuracy of the AC generator is improved.

(Invention of Claim 2)
2. The vehicle alternator mounting structure according to claim 1, wherein the first reference portion and the second reference portion are point contact or line contact with respect to the first restriction surface and the second restriction surface, respectively. Alternatively, positioning is performed by surface contact.
The first restriction surface and the second restriction surface only need to be able to position the first reference portion and the second reference portion on one side in the vertical direction and one side in the axial direction, respectively. In this case, the first reference portion and the second reference portion may have a planar shape so that they can be brought into surface contact with the first restricting surface and the second restricting surface. For example, a protrusion shape capable of point contact or a rib shape capable of line contact may be used.

(Invention of Claim 3)
3. The vehicle alternator mounting structure according to claim 1, wherein the first restricting surface and the second restricting surface are both provided perpendicular to the mounting seat surface on the engine side, and The restriction surface and the second restriction surface are provided at right angles.
As a result, the first reference surface can reliably position the first reference portion on one side in the vertical direction, and the second restriction surface can ensure the second reference portion on one side in the axial direction. Can be positioned.

(Invention of Claim 4)
The mounting structure for an AC generator for a vehicle according to claim 3 is characterized in that the first restriction surface and the second restriction surface are provided so as to protrude on the attachment seat surface on the engine side.
In this case, for example, the first restriction surface and the second restriction surface need only be arranged and fixed vertically on the mounting seat surface on the engine side. It can be easily provided on the mounting seat surface.

(Invention of Claim 5)
The vehicle alternator mounting structure according to claim 3 is characterized in that the first regulating surface and the second regulating surface are provided so as to be recessed from the mounting seat surface on the engine side.
The first restriction surface and the second restriction surface do not necessarily have to be provided on the mounting seat surface, and can be provided to be recessed below the mounting seat surface. For example, a hole having a quadrangular section can be provided in the mounting seat surface, and the side surfaces (two surfaces forming a right angle) of the hole can be provided as the first restriction surface and the second restriction surface.

(Invention of Claim 6)
The vehicle alternator mounting structure according to any one of claims 1 to 5, further comprising: a pulley that is fixed to an end of the rotating shaft and that is coupled to the crank pulley of the engine via a belt; The second restriction surface is provided on the same plane as the assembly surface of the crank pulley for the engine, and the second reference portion is disposed on the same plane as the assembly surface of the pulley for the housing. .
According to this configuration, since the second reference portion is positioned by the second restriction surface, the assembly surface of the crank pulley with respect to the engine and the assembly surface of the pulley with respect to the housing of the AC generator are flush with each other. Therefore, it is possible to match the centers of the crank pulley and the generator pulley. As a result, it is possible to prevent the belt from being prematurely worn out and abnormal noise caused by misalignment.

(Invention of Claim 7)
The vehicle alternator mounting structure according to any one of claims 1 to 6, wherein the first restriction surface is set on the ground side with respect to the first reference portion.
In this case, the AC generator positioned in three directions (front and rear, up and down, left and right) is bolted (the bolt inserted into the bolt hole or bolt groove is screwed into the female screw hole formed on the mounting seat surface on the engine side) In this case, there is no need to lift the alternator upward (press the first reference part against the first restriction surface), and the first reference part is made to be the first by utilizing the weight of the alternator. Since it can be pressed against the regulation surface, workability when bolting the AC generator can be improved.

(Invention of Claim 8)
The vehicle AC generator mounting structure according to any one of claims 1 to 7, wherein the first reference portion and the second reference portion are provided integrally with the mounting stay.
In this case, it is not necessary to provide the first reference portion and the second reference portion separately from the mounting stay. For example, the first reference portion and the second reference portion are integrated around the mounting stay. Can be provided.

(Invention of Claim 9)
9. The mounting structure for an AC generator for a vehicle according to claim 8, wherein the plurality of mounting stays are provided on the top side of the housing and the ground side of the housing with the rotating shaft interposed therebetween. And a second mounting stay.
One of the first reference portion and the second reference portion is provided on the first attachment stay, and the other is provided on the second attachment stay.

  Usually, since the AC generator for vehicles has a plurality of (for example, three) mounting stays, when the first reference portion and the second reference portion are provided integrally with the mounting stay, It is not necessary to provide the same mounting stay. That is, the first reference portion and the second reference portion can be provided separately on separate mounting stays. For example, the first reference portion may be provided on the first attachment stay (or the second attachment stay), and the second reference portion may be provided on the second attachment stay (or the first attachment stay).

(Invention of Claim 10)
9. The mounting structure for an AC generator for a vehicle according to claim 8, wherein the plurality of mounting stays are provided on the top side of the housing and the ground side of the housing with the rotating shaft interposed therebetween. And a second mounting stay.
The first reference portion and the second reference portion are integrally provided by connecting the first attachment stay and the second attachment stay.

  Usually, the vehicle alternator has a plurality of (for example, three) mounting stays. For example, a first mounting stay provided on the top side of the housing and a ground side of the housing are provided. It is also possible to form a connecting portion integrally connected to the second mounting stay, and to provide the first reference portion and the second reference portion around the connecting portion. In this case, since the area of the second reference portion positioned in the front-rear direction by the second restriction surface can be increased, the positioning accuracy can be further improved.

(Invention of Claim 11)
11. The vehicle alternator mounting structure according to claim 9 or 10, wherein the first mounting stay and the second mounting stay are both provided integrally with a front housing to which a pulley is assembled. Features.
Usually, a housing for an AC generator for a vehicle is configured by combining a front side housing to which a pulley is assembled and a rear side housing arranged on the side opposite to the pulley, and both housings may be provided with mounting stays, respectively. Many.

Here, if the first reference portion and the second reference portion are provided separately for the mounting stay provided in the front housing and the mounting stay provided in the rear housing, the assembly accuracy of both housings is improved. There is a possibility that the mounting position accuracy of the alternator is deteriorated by affecting the positional relationship between the first reference portion and the second reference portion.
Therefore, when providing the first reference portion and the second reference portion using a plurality of mounting stays, use only the mounting stays provided in the same housing (the front side housing in the present invention). Thus, it is possible to improve the mounting position accuracy of the AC generator without being adversely affected by the mounting accuracy of both housings.

(Invention of Claim 12)
The vehicle AC generator mounting structure according to any one of claims 1 to 7, wherein the first reference portion and the second reference portion are provided separately from the mounting stay. .
The first reference portion and the second reference portion are not necessarily provided on the mounting stay, and may be provided separately from the mounting stay.

  The best mode for carrying out the present invention will be described in detail with reference to the following examples.

FIG. 1 is a perspective view of an automotive alternator 1 according to a first embodiment.
The vehicle alternator according to the first embodiment (hereinafter referred to as a generator 1) includes a rotating shaft 3 (see FIG. 3) to which the rotational power of the engine is transmitted via a pulley 2, and the rotating shaft 3 is rotated. The housings 4 and 5 are freely supported, and a plurality of (three in the first embodiment) mounting stays 6, 7, and 8 are provided integrally with the housings 4 and 5. , 8, a so-called side-mount type mounting structure is employed in which the engine side mounting seat surface 9 (see FIG. 2) is bolted and fixed in a direction perpendicular to the rotating shaft 3.

The housings 4 and 5 are composed of a front side housing 4 that supports the pulley side of the rotating shaft 3 and a rear side housing 5 that supports the non-pulley side of the rotating shaft 3. The housings 4 and 5 are combined in the axial direction. The plurality of stud bolts (not shown) are fastened and fixed.
The three mounting stays 6, 7, 8 are a first mounting stay 6, a second mounting stay 7 provided integrally with the front side housing 4, and a third mounting stay provided integrally with the rear side housing 5. Each of the mounting stays 8 extends in a cylindrical shape in a direction perpendicular to the rotation shaft 3.

The first mounting stay 6 and the second mounting stay 7 are provided with the first mounting stay 6 on the upper side and the lower side of the front side housing 4 with the rotating shaft 3 interposed therebetween, that is, on the top side in the vertical direction, A second mounting stay 7 is provided on the ground side, and bolt holes 6a and 7a (see FIG. 2) pass through the inside of both mounting stays 6 and 7 in a direction perpendicular to the rotary shaft 3, respectively. .
The third mounting stay 8 is provided on the lower side of the rear housing 5, that is, on the ground side in the vertical direction, and the bolt hole 8 a (see FIG. 2) is formed inside the mounting stay 8 in a direction perpendicular to the rotary shaft 3. ) Penetrates.
Further, one end face of each of the mounting stays 6 to 8 is formed as mounting surfaces 6b, 7b, 8b that come into contact with the mounting seat surface 9 when the generator 1 is mounted on the engine mounting seat surface 9. The mounting surfaces 6b-8b of the book mounting stays 6-8 are provided on the same plane.

In the first embodiment, the generator 1 is fixed to the mounting seating surface 9 on the engine side, and the vertical direction of the generator 1 is the vertical direction, parallel to the mounting stays 6 to 8 (bolt holes 6a to 8a). Is a left-right direction, and a direction parallel to the rotating shaft 3 of the generator 1 is a front-rear direction. In the front-rear direction, the axial pulley side is the front side, and the non-pulley side is the rear side (see FIG. 1).
At one end of the first mounting stay 6 (the left end in FIG. 1), a rectangular column 10 having a square cross section is provided around a bolt hole 6a that penetrates the inside of the first mounting stay 6. The prism portion 10 is provided with a first reference surface 11 and a second reference surface 12 which serve as a reference for determining the mounting position of the generator 1 with respect to the mounting seat surface 9 on the engine side. Yes.

  The prism 10 has an upper end surface and a lower end surface formed on both sides in the vertical direction across the bolt hole 6a, and a front end surface and a rear end surface formed on both sides in the front-rear direction across the bolt hole 6a. One of the upper end surface and the lower end surface (the lower end surface in the first embodiment) is provided as the first reference surface 11, and either one of the front end surface and the rear end surface (the front end surface in the first embodiment). ) Is provided as the second reference plane 12.

The upper end surface and the lower end surface are planes perpendicular to the top-to-bottom direction, and the front end surface and the rear end surface are planes perpendicular to the front-rear direction, respectively.
Further, as shown in FIG. 3, the second reference surface 12 is arranged on the side surface of the ball bearing 13 that supports the rotating shaft 3 in FIG. And the same surface).

  On the other hand, on the mounting seat surface 9 on the engine side (for example, provided on the engine bracket), as shown in FIG. 2, bolts (not shown) are used to fix the three mounting stays 6-8. Female screw holes 14, 15, 16 are provided at three locations, and when the generator 1 is attached, a first reference surface 11 is positioned for positioning the first reference surface 11 in the vertical direction. And a second restriction surface 18 for positioning the second reference surface 12 on the front side in the front-rear direction.

The three female screw holes 14 to 16 are provided with a first female screw hole 14 provided at a position where the first mounting stay 6 is fixed and a second female screw hole 14 provided at a position where the second mounting stay 7 is fixed. These are a female screw hole 15 and a third female screw hole 16 provided at a position for fixing the third mounting stay 8. The first restricting surface 17 and the second restricting surface 18 are located on the lower side and the front side with respect to the first female screw hole 14, and are provided vertically on the mounting seat surface 9. The second restriction surface 18 is provided at a right angle.
The second restricting surface 18 is provided on the same plane as the assembly surface 19a of the crank pulley 19 with respect to the engine in the front-rear direction.

Next, the procedure for fixing the generator 1 to the mounting seat surface 9 on the engine side will be described.
First, the generator 1 is positioned in three directions (front and rear, up and down, left and right) with respect to the mounting seat surface 9. Specifically, the first reference surface provided on the first mounting stay 6 is positioned in the left-right direction by pressing the mounting surfaces 6 b to 8 b of the three mounting stays 6 to 8 against the mounting seat surface 9. 11 and the second reference surface 12 are pressed against the first restricting surface 17 and the second restricting surface 18 provided on the mounting seat surface 9 to be positioned in the vertical direction and the front-rear direction. The

Thereby, the position of the generator 1 on the mounting seat surface 9 is restrained in three directions (front and rear, up and down, left and right). Thereafter, the bolts inserted into the bolt holes 6a to 8a of the mounting stays 6 to 8 are screwed into the female screw holes 14 to 16 formed in the mounting seat surface 9, and the generator 1 is mounted on the mounting seat surface 9. Fix it.
According to the above mounting structure, three mountings are performed on the mounting seat surface 9 on the engine side in a state (positioned state) in which the position of the generator 1 is constrained in three directions (front and rear, up and down, left and right). Since the stays 6 to 8 can be bolted and fixed, the mounting position accuracy of the generator 1 is improved.

  In particular, in the first embodiment, the second reference surface 12 provided on the first attachment stay 6 is located on the same plane as the assembly surface 2 a of the pulley 2 and is provided on the attachment seat surface 9. Since the second restriction surface 18 is located on the same plane as the assembly surface 19a of the crank pulley 19, the second reference surface 12 is positioned by the second restriction surface 18 so that the set of the crank pulley 19 is obtained. The attachment surface 19a and the assembly surface 2a of the generator-side pulley 2 can be arranged on the same plane. As a result, the deviation between the center of the crank pulley 19 and the center of the generator pulley 2 can be reduced or eliminated, and the belt (not shown) caused by the alignment deviation can be prematurely worn out or abnormal noise can be generated. Can be prevented.

  Moreover, in Example 1, since the lower end surface of the prismatic part 10 provided in the 1st attachment stay 6 is made into the 1st reference surface 11, the 1st control surface provided in the engine-side attachment seat surface 9 is used. 17 can be positioned on the ground side. In this case, when the generator 1 positioned in three directions (front and rear, up and down, left and right) is bolted and fixed, it is not necessary to lift the generator 1 upward, and the weight of the generator 1 is used. Since the 1st reference surface 11 can be pressed against the 1st control surface 17, workability at the time of bolting and fixing generator 1 can be improved.

In the first embodiment, a prism 10 is provided at one end of the first mounting stay 6, and the first reference surface 11 and the second reference surface 12 are provided on the prism 10. The entire one mounting stay 6 may be provided in a prismatic shape.
Further, the first reference stay 11 and the second reference face 12 are provided on the first attachment stay 6, but the second attachment stay (the second attachment stay 7 or the third attachment stay 8) is the second attachment stay. One reference plane 11 and a second reference plane 12 can also be provided.

FIG. 4 is a perspective view of the generator 1 according to the second embodiment.
As shown in FIG. 4, the generator 1 according to the second embodiment includes a connecting section having a rectangular cross section that connects one end side end of the first mounting stay 6 and one end side end of the second mounting stay 7. 20 is an example in which the first reference surface 11 and the second reference surface 12 are provided on the connecting portion 20.
According to this configuration, since the area of the second reference surface 12 can be made larger than in the case of the first embodiment, the second restriction surface 18 provided on the mounting seat surface 9 on the engine side is also provided. Similarly, by forming a large size, it is possible to further improve the mounting position accuracy of the generator 1.

FIG. 5 is a perspective view of the generator 1 according to the third embodiment.
As shown in FIG. 5, the generator 1 according to the third embodiment includes a first reference surface 11, a second reference surface 12, and a positioning portion 21 provided separately from the three mounting stays 6 to 8. This is an example in the case of providing.
The positioning portion 21 is provided integrally with the front side housing 4 or the rear side housing 5 and has, for example, a rectangular column shape with a square cross section, and one of the upper end surface and the lower end surface of the prism shape is the first reference. One of the front end surface and the rear end surface is provided as the second reference surface 12.

Even in the configuration described above, the same effects as those of the first embodiment can be obtained, and the mounting position accuracy of the generator 1 can be improved.
The front end surface of the positioning portion 21 is provided on the same plane as the mounting surfaces 6b to 8b of the three mounting stays 6 to 8, so that the generator is more stable with respect to the mounting seat surface 9 on the engine side. 1 can be fixed. However, the front end surface of the positioning portion 21 may be retracted from the mounting surfaces 6b to 8b of the three mounting stays 6 to 8, and a gap may be formed between the mounting seat surface 9 on the engine side. In this case, the generator 1 can be positioned in the left-right direction by pressing the mounting surfaces 6b-8b of the three mounting stays 6-8 against the mounting seat surface 9 on the engine side. It suffices if the generator 1 can be positioned in the vertical direction and the front-rear direction by using the reference surface 11 and the second reference surface 12.

FIG. 6 is a perspective view of the mounting seat surface 9 forming the first restriction surface 17 and the second restriction surface 18 according to the fourth embodiment.
In the first embodiment, an example in which the first restricting surface 17 and the second restricting surface 18 are erected on the mounting seat surface 9 is described. However, in the fourth embodiment, the first restricting surface 17 and the second restricting surface 18 are provided lower than the attaching seat surface 9. This is an example. Specifically, as shown in FIG. 6, a hole having a rectangular cross section is provided in the mounting seat surface 9, and the side surfaces (two surfaces forming a right angle) of the hole are formed on the first regulating surface 17 and the second surface. It can also be provided as a regulating surface 18.
Also in the configuration of the present embodiment, the same effect as that of the first embodiment can be obtained, and the mounting position accuracy of the generator 1 can be improved.

FIG. 7 is a perspective view of the mounting stay 6 (or 7, 8) that forms the first reference surface 11 and the second reference surface 12 according to the fifth embodiment.
As shown in FIG. 7, the mounting stay 6 according to the fifth embodiment is provided in a U shape having a bolt groove 6c for inserting a bolt, and the first reference surface 11 is utilized using the U shape. And a second reference surface 12 are examples.
Also in the configuration of the present embodiment, the same effect as that of the first embodiment can be obtained, and the mounting position accuracy of the generator 1 can be improved.

FIG. 8 is a perspective view of the mounting stay 7 (or 6, 8) forming the first reference surface 11 and the mounting stay 6 (or 7, 8) forming the second reference surface 12 according to the sixth embodiment. is there.
The sixth embodiment is an example in which the first reference surface 11 and the second reference surface 12 are provided on separate mounting stays. For example, as shown in FIG. 8, the first reference surface 11 may be provided on the second mounting stay 7 and the second reference surface 12 may be provided on the first mounting stay 6.

In this case, when the first reference surface 11 and the second reference surface 12 are provided separately on the mounting stays 6 and 7 provided on the front housing 4 and the mounting stay 8 provided on the rear housing 5. The assembly accuracy of the housings 4 and 5 affects the positional relationship between the first reference surface 11 and the second reference surface 12, and the mounting position accuracy of the generator 1 may be deteriorated. Therefore, when the first reference surface 11 and the second reference surface 12 are provided separately in separate mounting stays, only the mounting stay provided in the same housing (for example, the front housing 4) is used. Is good.
Also in the configuration of the present embodiment, the same effect as that of the first embodiment can be obtained, and the mounting position accuracy of the generator 1 can be improved.

(Modification)
In Examples 1 to 6, an example in which the first reference surface 11 and the first restriction surface 17 and the second reference surface 12 and the second restriction surface 18 are brought into surface contact with each other is described. However, for example, instead of the first reference surface 11 and the second reference surface 12, a protrusion shape that can make point contact with the first restriction surface 17 and the second restriction surface 18, or a rib shape that can make line contact, etc. It is also possible.

1 is a perspective view of a generator according to Embodiment 1. FIG. It is a perspective view which positions the generator which concerns on Example 1 on a mounting seat surface. It is sectional drawing which shows the assembly position of the generator side pulley and crank pulley which concern on Example 1. FIG. 6 is a perspective view of a generator according to Embodiment 2. FIG. FIG. 6 is a perspective view of a generator according to a third embodiment. FIG. 10 is a perspective view of a mounting seat surface according to a fourth embodiment. FIG. 10 is a perspective view of a mounting stay according to a fifth embodiment. FIG. 10 is a perspective view of an attachment stay according to a sixth embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 AC generator for vehicles 2 Pulley 3 Rotating shaft 4 Front side housing 5 Rear side housing 6 First mounting stay (mounting stay)
6a Bolt hole of first mounting stay 6b Mounting surface of first mounting stay 6c Bolt groove 7 Second mounting stay (mounting stay)
7a Bolt hole of second mounting stay 7b Mounting surface of second mounting stay 8 Third mounting stay (mounting stay)
8b Mounting surface of the third mounting stay 8a Bolt hole of the third mounting stay 9 Mounting seat surface on the engine side 11 First reference surface (first reference portion)
12 Second reference surface (second reference part)
14 First female screw hole (female screw hole)
15 Second female screw hole (female screw hole)
16 Third female screw hole (female screw hole)
17 First restriction surface 18 Second restriction surface 19 Crank pulley

Claims (12)

A rotating shaft that is driven by the engine and rotates;
A housing that rotatably supports the rotating shaft;
A plurality of mounting stays provided integrally with the housing;
The mounting stay is formed with a bolt hole or a bolt groove that opens in a direction perpendicular to the rotation shaft, and the mounting surface of the mounting stay is pressed directly or indirectly against the mounting seat surface on the engine side. A mounting structure for an AC generator for a vehicle, in which a bolt inserted through the bolt hole or bolt groove is screwed into a female screw hole formed on a mounting seat surface on the engine side and fastened.
The housing is provided with a first reference portion and a second reference portion serving as a reference for determining the mounting position of the AC generator with respect to the mounting seat surface on the engine side,
On the mounting seat surface on the engine side, on one side in the top-and-bottom direction, on the one side in the axial direction (front-rear direction) parallel to the rotation axis, the first restriction surface for positioning the first reference portion, A mounting structure for an AC generator for a vehicle, wherein a second restriction surface for positioning the second reference portion is provided. In the vehicle AC generator mounting structure according to claim 1,
The first reference portion and the second reference portion are positioned by making point contact, line contact, or surface contact with the first restriction surface and the second restriction surface, respectively. A mounting structure for a vehicle alternator as a feature. In the mounting structure of the vehicle alternator according to claim 1 or 2,
The first restricting surface and the second restricting surface are both provided perpendicular to the mounting seat surface on the engine side, and the first restricting surface and the second restricting surface are provided at right angles. A structure for mounting an AC generator for a vehicle, characterized in that In the vehicle AC generator mounting structure according to claim 3,
The mounting structure for an AC generator for a vehicle, wherein the first restricting surface and the second restricting surface are provided so as to protrude on the mounting seat surface on the engine side. In the vehicle AC generator mounting structure according to claim 3,
The mounting structure for an AC generator for a vehicle, wherein the first restricting surface and the second restricting surface are provided so as to be recessed from a mounting seat surface on the engine side. In the vehicle AC generator mounting structure according to any one of claims 1 to 5,
A pulley fixed to an end of the rotating shaft and connected to a crank pulley of the engine via a belt;
The second restriction surface is provided on the same plane as an assembly surface of the crank pulley with respect to the engine,
The vehicle AC generator mounting structure, wherein the second reference portion is disposed on the same plane as an assembly surface of the pulley with respect to the housing. In the vehicle AC generator mounting structure according to any one of claims 1 to 6,
The mounting structure for an AC generator for a vehicle, wherein the first restriction surface is set on a ground side with respect to the first reference portion. In the vehicle AC generator mounting structure according to any one of claims 1 to 7,
The mounting structure for an AC generator for a vehicle, wherein the first reference portion and the second reference portion are provided integrally with the mounting stay. The vehicle AC generator mounting structure according to claim 8,
The plurality of mounting stays include a first mounting stay provided on the top side of the housing and a second mounting stay provided on the ground side of the housing across the rotation shaft,
One of the first reference portion and the second reference portion is provided on the first attachment stay, and the other is provided on the second attachment stay. AC generator mounting structure. The vehicle AC generator mounting structure according to claim 8,
The plurality of mounting stays include a first mounting stay provided on the top side of the housing and a second mounting stay provided on the ground side of the housing across the rotation shaft,
The vehicle alternator characterized in that the first reference portion and the second reference portion are integrally provided by connecting the first attachment stay and the second attachment stay. Mounting structure. In the vehicle AC generator mounting structure according to claim 9 or 10,
The structure for mounting an AC generator for a vehicle, wherein the first mounting stay and the second mounting stay are both provided integrally with a front housing to which a pulley is assembled. In the vehicle AC generator mounting structure according to any one of claims 1 to 7,
The vehicle alternator mounting structure according to claim 1, wherein the first reference portion and the second reference portion are provided separately from the mounting stay.

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