DESCRIPTION
TITLE: ROTARY ELECTRIC MACHINE FIELD OF THE INVENTION
[0001]
The present invention relates to a terminal portion of a rotary electric machine. DESCRIPTION OF THE RELATED ART
[0002]
A terminal portion of a known rotary electric machine is of a structure in which a motor terminal is integrally formed with a brush holder (for example, see Patent Document 1). [RELATED ART DOCUMENT] [PATENT DOCUMENT]
[0003] [Patent Document 1] Japanese Unexamined Patent Publication No. 2010-141948 [MEANS FOR SOLVING THE PROBLEMS]
[0004]
In the known rotary electric machine in which the motor terminal is integrally formed with the brush holder, when types of the motor terminal increase, the motor terminal and the brush holder are regarded as a different component from a step of forming the brush holder; and thus, the components cannot be common. Furthermore, in the case where the motor terminal is regarded as a different

component and the motor terminal is simply welded to the brush holder, a problem exists in that variation at a motor terminal position due to deflection of the motor terminal is generated.
SUMMARY OF THE INVENTION
[0005]
The present invention has been made to solve the problem described above, and an object of the present invention is capable of making a brush holder common, and preventing a motor terminal from being deflected to prevent variation from being generated at a motor terminal position. [MEANS FOR SOLVING THE PROBLEMS]
[0006]
A rotary electric machine according to the present invention includes: a motor terminal holder which retains a motor terminal; a brush holder which has a brush holder terminal section that electrically connects the motor terminal of the motor terminal holder and a brush mechanism; and a housing which retains the brush holder. The motor terminal holder is configured separately from the brush holder, and the motor terminal holder is fixed to the housing together with the brush holder. [ADVANTAGEOUS EFFECT OF THE INVENTION]
[0007]
According to a rotary electric machine of the present invention, a motor terminal is separated from an integrally formed brush holder,

whereby the brush holder can be common for motor terminals of various specifications and variation at a motor terminal position can be prevented.
The foregoing and other objects, features, aspects and advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS [0008]
FIG. 1 is views each showing a motor terminal of a rotary electric machine according to Embodiment 1 of the present invention, (a) is a front view, and (b) is a side view;
FIG. 2 is assembly views of the motor terminal and a motor terminal holder of the rotary electric machine according to Embodiment 1 of the present invention, (a) is a front view, (b) is a side sectional view, and (c) is a rear view;
FIG. 3 is views each showing a brush holder of the rotary electric machine according to Embodiment 1 of the present invention, (a) is a front view, (b) is a side sectional view, and (c) is a rear view;
FIG. 4 is assembly views of the motor terminal, the motor terminal holder, and the brush holder of the rotary electric machine according to Embodiment 1 of the present invention, (a) is a front view, (b) is a side sectional view, and (c) is a rear view;

FIG. 5 is views each showing only a housing of the rotary electric machine according to Embodiment 1 of the present invention, (a) is a front view, (b) is a side sectional view viewed in the arrow direction of the line A-A in FIG. 5(a), and (c) is a rear view;
FIG. 6 is views each showing a state where the brush holder is fixed by a brush holder mounting screw to a housing of the rotary electric machine according to Embodiment 1 of the present invention, (a) is a side sectional view, and (b) is a rear view;
FIG. 7 is views each showing a state where a yoke is fixed by a yoke mounting screw to the housing of the rotary electric machine according to Embodiment 1 of the present invention, (a) is a front view, (b) is a side sectional view, and (c) is a rear view;
FIG. 8 is assembly views of a motor terminal and a motor terminal holder of a rotary electric machine according to Embodiment 2 of the present invention, (a) is a front view, (b) is a side sectional view, and (c) is a rear view;
FIG. 9 is views each showing a brush holder of the rotary electric machine according to Embodiment 2 of the present invention, (a) is a front view, (b) is a side sectional view, and (c) is a rear view;
FIG. 10 is assembly views of the motor terminal, the motor terminal holder, and the brush holder of the rotary electric machine according to Embodiment 2 of the present invention, (a) is a front view, (b) is a side sectional view, and (c) is a rear view;
FIG. 11 is views each showing only a housing of the rotary electric

machine according to Embodiment 2 of the present invention, (a) is a side sectional view, and (b) is a rear view;
FIG. 12 is views each showing a state where the brush holder is fixed by a brush holder mounting screw to the housing of the rotary electric machine according to Embodiment 2 of the present invention, (a) is a rear view, and (b) is a side sectional view viewed in the arrow direction of the line B-B in FIG. 12(a);
FIG. 13 is views each showing a state where a yoke is fixed by a yoke mounting screw to.the housing of the rotary electric machine according to Embodiment 2 of the present invention, (a) is a front view, (b) is a side sectional view, and (c) is a rear view;
FIG. 14 is views each showing a modified embodiment of a motor terminal and a motor terminal holder of the rotary electric machine according to Embodiment 2 of the present invention, (a) is a front view, (b) is a side sectional view, and (c) is a rear view;
FIG. 15 is views each showing the modified embodiment of a housing of the rotary electric machine according to Embodiment 2 of the present invention, (a) is a side sectional view, and (b) is a rear view: and
FIG. 16 is views each showing the modified embodiment of the rotary electric machine according to Embodiment 2 of the present invention and showing a state where a brush holder is fixed by a brush holder mounting screw to the housing, (a) is a side sectional view, and (b) is a rear view.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0009]
Hereinafter, respective embodiments of the present invention will be described with reference to drawings.
Incidentally, the same reference numerals as those shown in the respective drawings represent the same or corresponding elements.
[0010] Embodiment 1.
A terminal portion of a rotary electric machine according to Embodiment 1 will be described with reference to FIG. 1 to FIG. 7.
The terminal portion of the rotary electric machine according to Embodiment 1 includes: a motor terminal holder 2 which insulates and retains a motor terminal 1; a brush holder 3 which has a brush holder terminal section 3a that electrically connects the motor terminal 1 and a brush mechanism (not shown) ; and a housing 4 which retains the brush holder 3.
[0011]
The motor terminal 1 shown in FIG. 1 has a joint section la which is joined to a brush holder 3 and the joint section la is inserted into an insertion hole 2e of the motor terminal holder 2, resulting in a retaining state shown in FIG. 2.
The motor terminal holder 2 is newly formed with an insulation material different from the brush holder 3 and is configured to be capable of retaining a relevant motor terminal corresponding

to the motor terminals 1 of various specifications.
The joint section la of the motor terminal 1 is welded to the brush holder terminal section 3a of the brush holder 3 shown in FIG. 3. By this welding, the motor terminal 1 and the motor terminal holder 2 are mechanically and electrically joined to the brush holder 3, resulting in an assembly state shown in FIG. 4 to form a component serving the same function as the known integrally formed brush holder provided with an electrical circuit.
[0012]
Further, the motor terminal holder 2 is sandwiched and fixed by the brush holder 3 and the housing 4 when the brush holder 3 is assembled to the housing 4 having a bearing section 4f, as shown in FIG. 5 and FIG. 6.
That is, the sandwiching and fixing of the motor terminal holder
2 (by the brush holder 3 and the housing 4) is performed by clamping
a brush holder mounting screw 5 which is passed through a through
hole 3b of the brush holder 3 and is screwed to a threaded hole
4a of the housing 4 and, more particularly, a perpendicular section
2f provided on the lower surface of the motor terminal holder 2
is made to intervene on a cutout shaped step section 3c of the brush
holder 3 and the perpendicular section 2f is sandwiched between
the vertical surface of the cutout shaped step section 3c and the
housing.
Incidentally, the cutout shaped step section 3c of the brush holder
3 is provided on the facing side that faces the housing 4 at the

through hole 3b.
Furthermore, by the configuration described above, the motor terminal holder 2 can be simultaneously fixed when the brush holder 3 is attached to the housing 4 by the brush holder mounting screw 5; and therefore, a new component does not need to be provided.
[0013]
Furthermore, the motor terminal holder 2 is formed with a first rib 2a and a second rib 2b on the side facing the housing 4.
The first rib 2a is provided on the perpendicular section 2f of the motor terminal holder 2 so as to protrude toward the housing 4. The first rib 2a is to be flatly crushed by the housing 4 and the clamping force of the brush holder mounting screw 5 when the brush holder 3 is fixed by clamping the brush holder mounting screw 5 to the threaded hole 4a of the housing 4. Then, the motor terminal holder 2 is fixed to the housing 4 in a state where the first rib 2a is crushed.
In addition, the second rib 2b is provided facing the convex section 4c of the housing 4 on a concave section 2g of the motor terminal holder 2 . As shown in FIG. 7, when a yoke 6 is fixed by a yoke mounting screw 7 which is passed through a through hole 6a and is screwed to a yoke mounting screw hole 4b, the second rib 2b is pressed by the convex section 4c and is to be flatly crushed by the clamping force of the yoke mounting screw 7. Then, the yoke 6 is fixed to the housing 4 in a state where the second rib 2b is crushed. Incidentally, the through hole 6a is provided in the yoke and the

yoke mounting screw hole 4b is provided in the housing 4.
[0014]
In the thus configured motor terminal structure, the motor terminal 1 tends to deflect from a place of the joint section la to the housing 4 side via the motor terminal holder 2 by the clamping force at the time when the yoke 6 is fixed to the housing 4 by the yoke mounting screw 7 . However, the motor terminal holder 2 is sandwiched between the housing 4 and the cutout shaped step section 3c of the brush holder by the clamping of the brush holder mounting screw 5 to be fixed against a deflection direction; and therefore, variation at a motor terminal position due to deflection of the motor terminal 1 caused by welding the motor terminal 1 and the brush holder 3 can be prevented.
[0015]
Further, the clamping force of the housing 4 and the yoke mounting screw 7, the clamping force being applied to the motor terminal holder 2, is absorbed by the crush of the second rib 2b provided on the motor terminal holder 2 . By the configuration described above, the motor terminal 1, the motor terminal holder 2, and the brush holder 3 can be integrated; and therefore, there can be obtained the brush holder that is the same as the known brush holder in which the motor terminal is integrally formed.
In addition, as compared to the known brush holder in which the brush holder is integrally formed with the motor terminal, there can be provided a brush holder that is of a division type in which

the motor terminal is separated from the brush holder; and therefore, the brush holder can be common.
[0016] Embodiment 2.
A terminal portion of a rotary electric machine according to Embodiment 2 will be described with reference to FIG. 1, and FIG. 8 to FIG. 13.
The terminal portion of the rotary electric machine according to Embodiment 2 is provided with a convex section 2c (see FIG. 8 and FIG. 10) or a concave section (not shown) on either one of a motor terminal holder 2 and a housing 4, and a concave section 4d (see FIG. 11) or a convex section (not shown) is provided on the other of the motor terminal holder 2 and the housing; and, when the brush holder 3 is assembled to the housing 4, the convex section 2c and the concave section 4d are fitted as shown in FIG. 12 and accordingly the motor terminal holder 2 is fixed to the housing 4.
[0017]
Hereinafter, the configuration of the terminal portion of the rotary electric machine will be described in series.
First, a motor terminal 1 of FIG. 1 is inserted into the motor terminal holder 2, resulting in a state of FIG. 8. Next, a joint section la of the motor terminal 1 is joined by welding at a place of a brush holder terminal section 3a of a brush holder 3 of FIG. 9, resulting in a state of FIG. 10 to form a component serving the same function as the integrally formed brush holder, as in Embodiment

1.
[0018]
From this state, a brush holder mounting screw 5 is screwed to a threaded hole 4a of the housing 4 to fix the brush holder 3, as in FIG. 6. That is, the brush holder mounting screw 5 is passed through a through hole 3b of the brush holder 3 and the brush holder
3 is fixed by clamping the brush holder mounting screw 5 to the
threaded hole 4a of the housing 4. At this time, a convex section
2c (FIG. 10) provided on the motor terminal holder 2 is simultaneously
fitted to the concave section 4d (FIG. 11) provided on the housing
4, as shown in FIG. 12. Furthermore, as shown in FIG. 13, a yoke
6 is fixed by a yoke mounting screw 7 which is passed through a
through hole 6a of the yoke 6 and is screwed to a yoke mounting
screw hole 4b of the housing 4, and a second rib 2b of the motor
terminal holder 2 is crushed by a convex section 4c of the housing
4 and is sandwiched between the housing 4 and the yoke 6.
[0019]
In the thus configured motor terminal structure, the motor terminal 1 tends to deflect from a place of the joint section la to the housing 4 side via the motor terminal holder 2 by the clamping force at the time when the yoke 6 is fixed to the housing 4 by the yoke mounting screw 7. However, the motor terminal holder 2 is fitted to the concave . section 4d of the housing at the convex section 2c to be fixed against a deflection direction; and therefore, variation at a motor terminal position due to deflection of the motor terminal 1 caused by welding

the motor terminal 1 and the brush holder 3 can be prevented.
Further, the clamping force of the housing 4 and the yoke mounting screw 7, the clamping force being applied to the motor terminal holder 2, is absorbed by the crush of the second rib 2b provided on the motor terminal holder 2. By the configuration described above, the motor terminal 1, the motor terminal holder 2, and the brush holder 3 can be integrated; and therefore, there can be obtained the brush holder that is the same as the known brush holder in which the motor terminal is integrally formed.
In addition, as compared to the known brush holder in which the brush holder is integrally formed with the motor terminal, there can be provided a brush holder that is of a division type in which the motor terminal 1 is separated from the brush holder 3; and therefore, the brush holder can be common.
[0020]
The prevention of deflection of the motor terminal 1 is performed by only the motor terminal holder 2 and the housing 4 (fitted at the concave section and the convex section of the motor terminal holder 2 and the housing 4) ; and therefore, resulting in an effect that is the same assembly property of the brush holder as that of the integrally formed brush holder.
[0021]
In Embodiment 2 of FIG. 8 to FIG. 13, the fixing of the motor terminal holder 2 is performed by the fit of the convex section 2c and the concave section 4d of the housing; however, the motor terminal holder

2 can be fixed by a modified embodiment of FIG. 14 to FIG. 16. That is, as shown in FIG. 14, FIG. 15, and FIG. 16, a corner section 2d (corresponding to 2c of FIG. 8) of a motor terminal holder of FIG. 14 is made to fit to a concave section 4dl (a section formed by 4c and 4e) of a housing of FIG. 15, and a convex section 4c of the housing of FIG. 15 is made to fit to a concave section 2g of a motor terminal holder 2 having a second rib 2b (see FIG. 2(b) and FIG. 14 (a) (b) ) . Accordingly, even when a motor terminal 1 tends to deflect by rotating centering on a joint section la, the motor terminal holder 2 is fixed at the above fitted sections; and therefore, the motor terminal 1 does not deflect.
[0022]
Incidentally, in the present invention, the respective embodiments can be appropriately changed or omitted within the scope of the present invention.
While the presently preferred embodiments of the present invention have been shown and described. It is to be understood that these disclosures are for the purpose of illustration and that various changes and modifications may be made without departing from the scope of the invention as set forth in the appended claims.

CLAIMS WHAT IS CLAIMED IS:
1. A rotary electric machine comprising:
a motor terminal holder which retains a motor terminal;
a brush holder which has a brush holder terminal section that electrically connects said motor terminal of said motor terminal holder and a brush mechanism; and
a housing which retains said brush holder,
wherein said motor terminal holder is configured separately from said brush holder, and
said motor terminal holder is fixed to said housing together with said brush holder.
2. The rotary electric machine according to claim 1,
wherein said motor terminal holder is formed with an insulation material different from said brush holder and is configured to be capable of retaining a relevant motor terminal corresponding to said motor terminals of various specifications.
3. The rotary electric machine according to claim 1 or claim 2,
wherein said motor terminal holder is fixed to said housing together
with said brush holder by clamping a brush holder mounting screw which is passed through said brush holder and is screwed to said housing.
4. The rotary electric machine according to claim 1 or claim 2,
wherein said brush holder is provided with a step section on a
facing surface that faces said housing, and said motor terminal

holder is provided with a perpendicular section,
said perpendicular section being made to intervene on the step section and being sandwiched between said brush holder and said housing.
5. The rotary electric machine according to claim 3,
wherein said brush holder is provided with a step section on a facing surface that faces said housing, and said motor terminal holder is provided with a perpendicular section,
said perpendicular section being made to intervene on the step section and being sandwiched between said brush holder and said housing.
6. The rotary electric machine according to claim 1 or claim 2,
wherein said motor terminal holder has a facing surface that faces
said housing, the facing surface being provided with a first rib that is to be flatly crushed in clamping by said brush holder mounting screw and a second rib that is to be flatly crushed in clamping by a yoke mounting screw for a yoke to be fixed to said housing.
7. The rotary electric machine according to claim 3,
wherein said motor terminal holder has a facing surface that faces said housing, the facing surface being provided with a first rib that is to be flatly crushed in clamping by said brush holder mounting screw and a second rib that is to be flatly crushed in clamping by a yoke mounting screw for a yoke to be fixed to said housing.
8. The rotary electric machine according to claim 4,
wherein said motor terminal holder has a facing surface that faces

said housing, the facing surface being provided with a first rib that is to be flatly crushed in clamping by said brush holder mounting screw and a second rib that is to be flatly crushed in clamping by a yoke mounting screw for a yoke to be fixed to said housing.
9. The rotary electric machine according to claim 5,
wherein said motor terminal holder has a facing surface that faces said housing, the facing surface being provided with a first rib that is to be flatly crushed in clamping by said brush holder mounting screw and a second rib that is to be flatly crushed in clamping by a yoke mounting screw for a yoke to be fixed to said housing.
10. The rotary electric machine according to claim 1 or claim 2,
wherein either one of said motor terminal holder and said housing
is provided with a convex section or a concave section, and the other of said motor terminal holder and said housing is provided with a concave section or a convex section; and
the convex section and the concave section are fitted in assembling said brush holder to said housing,
whereby said motor terminal holder is fixed to said housing against a direction in which said motor terminal deflects.
11. The rotary electric machine according to claim 6,
wherein either one of said motor terminal holder and said housing is provided with a convex section or a concave section, and the other of said motor terminal holder and said housing is provided with a concave section or a convex section; and
the convex section and the concave section are fitted in assembling

said brush holder to said housing,
whereby said motor terminal holder is fixed to said housing against a direction in which said motor terminal deflects.
12. The rotary electric machine according to claim 7,
wherein either one of said motor terminal holder and said housing
is provided with a convex section or a concave section, and the other of said motor terminal holder and said housing is provided with a concave section or a convex section; and
the convex section and the concave section are fitted in assembling said brush holder to said housing,
whereby said motor terminal holder is fixed to said housing against a direction in which said motor terminal deflects.
13. The rotary electric machine according to claim 8,
wherein either one of said motor terminal holder and said housing
is provided with a convex section or a concave section, and the other of said motor terminal holder and said housing is provided with a concave section or a convex section; and
the convex section and the concave section are fitted in assembling said brush holder to said housing,
whereby said motor terminal holder is fixed to said housing against a direction in which said motor terminal deflects.
14. The rotary electric machine according to claim 9,
wherein either one of said motor terminal holder and said housing
is provided with a convex section or a concave section, and the other of said motor terminal holder and said housing is provided

with a concave section or a convex section; and
the convex section and the concave section are fitted in assembling said brush holder to said housing,
whereby said motor terminal holder is fixed to said housing against a direction in which said motor terminal deflects.