JP2003143794A - Yoke housing and motor using the yoke housing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a yoke housing applicable to the manufacturing of various motors even if the motors are different from one another in the direction of rotational drive of the armature thereof. SOLUTION: The yoke housing 1 is for motor provided with a plurality of magnets, a brush, and an armature. The yoke housing 1 comprises a hollow and cylindrical housing frame 31 and engaging portions 34a and 34b which are formed at both ends of the housing frame 31 so that either a front frame or an end frame can be engaged therewith.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a yoke housing and a motor, and more particularly to a yoke housing in which a front frame and an end frame are arranged and a motor using the yoke housing.

[0002]

2. Description of the Related Art Conventionally, small DC motors have been widely used as motors for automobiles, for example, electric fan motors. These motors are composed of a yoke housing, an armature, a brush device and the like.

Generally, a bottomed substantially cylindrical body formed by deep drawing or the like is used for the yoke housing. Further, magnets are arranged on the inner peripheral surface of the yoke housing at substantially equal intervals in the circumferential direction of the yoke housing.

The armature is composed of a rotating shaft, a commutator arranged on the rotating shaft, a core, and a winding wound around the core.

Further, the motor having the above structure is configured to rotate in one direction when energized in accordance with the operation of the driven mechanism connected to the rotary shaft of the motor. That is, some of these motors include those in which the armature is driven to rotate clockwise or those in which the armature is driven to rotate counterclockwise when the motor body is viewed from the tip end side of the rotating shaft.

In the above motor, in order to stabilize the contact state between the brush and the commutator and improve the life of the brush, the magnets are arranged offset in the rotating direction of the armature with respect to the brush.

[0007]

However, in the motor as described above, the arrangement positions of the plurality of magnets provided in the yoke housing differ depending on the rotating direction of the armature, so that the armature is driven to rotate clockwise. The case and the case where the armature is driven to rotate counterclockwise need to manufacture the yoke housings having different shapes.

Therefore, it is necessary to prepare parts, jigs, press dies, etc. for manufacturing the yoke housings having different shapes, which causes a problem that the manufacturing process increases and the manufacturing cost also increases.

The present invention has been made in view of the above problems, and provides a yoke housing that can be applied to any motor even when manufacturing a motor in which the armature is driven to rotate in different directions. It is in.

Another object of the present invention is to provide a motor capable of reducing manufacturing cost and improving manufacturing efficiency.

[0011]

In order to solve the above-mentioned problems, the invention according to claim 1 is a yoke housing in a motor having a plurality of magnets, brushes and armatures, which is a hollow cylindrical housing frame. And an engaging portion formed on both ends of the housing frame so that either the front frame or the end frame can be engaged.

As described above, when the engaging portions capable of engaging with either the front frame or the end frame are formed on both end sides of the housing frame, the front frame or the end frame is arranged on any opening side of the yoke housing. Therefore, it is preferable.

Further, since the yoke housing is formed in a hollow cylindrical shape, it has a rotationally symmetric shape with a line perpendicular to the longitudinal direction as the axis of symmetry.

Therefore, since the motor can be assembled regardless of which opening side of the yoke housing the front frame or the end frame is disposed, the manufacturing efficiency can be improved and the manufacturing cost can be reduced.

According to a second aspect of the present invention, a fixing portion for fixing the plurality of magnets at substantially equal intervals in the circumferential direction is formed on the inner peripheral surface of the housing frame, and the plurality of magnets are formed. Is preferably displaced by the fixing portion in the rotational direction of the armature with respect to the brush.

As described above, when the plurality of magnets are arranged so as to be offset from each other in the rotation direction of the armature with respect to the brush, the commutated state of the brush and the commutator can be stabilized in the assembled motor. Therefore, if the yoke housing is used for the motor, the life of the brush can be improved.

Further, even when manufacturing a motor in which the directions in which the armature is rotationally driven are different, the front frame or the end frame can be arranged on any opening side of the yoke housing. Therefore, the yoke housing can be applied to any motor.

Further, as in the invention described in claim 3, it is preferable that the housing frame is formed into a hollow cylindrical shape by curling a thin plate.

As described above, if the housing frame is formed by curling a thin plate, the number of processing steps can be reduced. Therefore, in the yoke housing using the housing frame having the above structure,
It is possible to improve manufacturing efficiency and reduce manufacturing cost.

The invention according to claim 4 is the same as claim 1.
Since the yoke housing according to any one of items 1 to 3 is used, it is possible to reduce the manufacturing cost and improve the manufacturing efficiency by sharing the yoke housing parts.

[0021]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings. The members, arrangements, etc. described below do not limit the present invention, and it goes without saying that various modifications can be made in accordance with the spirit of the present invention.

1 to 10 show one embodiment of the present invention. FIG. 1 is a sectional development view of a yoke housing,
2 is a front view of the yoke housing, FIG. 3 is a side view of the motor, FIG. 4 is a front view of the forward rotation motor, FIG. 5 is a front view of the reverse rotation motor, and FIG. 8 is a sectional view taken along line CC, FIG. 7 is an explanatory view showing a method of assembling the motor, and FIG.
FIG. 9 is a diagram showing the structure of the end frame, FIG. 9 is an assembly state diagram of the forward rotation motor in the assembly process, and FIG. 10 is an assembly state diagram of the reverse rotation motor in the assembly process.

Incidentally, FIGS. 4 and 5 show BB in FIG.
It is represented by an arrow view. In addition, the motor 51 shown in FIG.
Is a motor specification in which the armature 41 rotates normally (rotates in the R1 direction) (hereinafter, referred to as normal rotation specification). On the other hand, in the motor 51 shown in FIG. 5, the armature 41 rotates in the reverse direction (R2
Motor specifications (hereinafter referred to as reverse rotation specifications).

A motor 51 according to one embodiment of the present invention shown in FIGS. 3 to 5 is a DC type motor for an electric fan device used in, for example, an air conditioner installed in an automobile. The motor 51 includes a yoke housing 1
, Front frame 11, end frame 21,
It is composed of an armature 41 and the like.

1 and 2 show the structure of the yoke housing 1 in this embodiment. Here, FIG. 1 shows a developed view in the AA cross section in FIG. 2. As shown, the yoke housing 1 includes a housing frame 31, which is a main body, fixing portions 33a, 33b, 33c, 33d,
It is configured to have caulking projections 34a and 34b as engaging portions.

The housing frame 31 shown in FIG. 1 is formed in a hollow cylindrical shape made of a non-magnetic metal material. The housing frame 31 is formed by curling a thin steel plate in order to improve the dimensional accuracy and the accuracy of geometrical tolerance and reduce the cost. By forming the housing frame 31 by curling as described above, the yoke housing 1 is formed with a central hole 31c that axially penetrates from the opening 31a to the opening 31b.

At the end of the yoke housing 1 on the side of the opening 31a, a cutout portion 35a is provided by cutting out a part in the circumferential direction in a concave shape in the axial direction. Similarly, at the end on the side of the opening 31b, a cutout portion 3 is formed by cutting a part in the circumferential direction into a concave shape in the axial direction.
5b is provided.

Further, at the end of the yoke housing 1 on the side of the opening 31a, a caulking projection 34a is formed by notching a part in the circumferential direction into a concave shape in the axial direction by a notch portion 35a. That is, the caulking projection 34a is formed so as to extend in the axial direction from the end on the opening 31a side. In addition, at predetermined positions on both ends of the caulking protrusion 34a, V
A letter-shaped cut 38a is formed. By forming the notch 38a in the caulking protrusion 34a, two auxiliary protrusions 39a are formed in the caulking protrusion 34a.

Similarly, the opening 31b of the yoke housing 1 is formed.
A caulking protrusion 34b is formed at the side end by partially notching the circumferential direction in a concave shape in the axial direction by the notch portion 35b. That is, the caulking protrusion 34b is
It is formed so as to extend in the axial direction from the end on the side of the opening 31b. Further, V-shaped notches 38b are formed at predetermined positions on both ends of the caulking protrusion 34ba. By forming the notch 38b on the caulking protrusion 34b, two auxiliary protrusions 39b are formed on the caulking protrusion 34b.

In the present embodiment, the caulking protrusion 34
Each of a and 34b is formed in three places with a predetermined length in the circumferential direction. Further, the auxiliary protrusions 39a and 39b are
It is formed on all of the caulking protrusions 34a and 34b. Further, the caulking protrusions 34a and 34b are formed at positions aligned with each other in the circumferential direction.

Since the auxiliary protrusions 39a and 39b are provided side by side with the caulking protrusions 34a and 34b, respectively, the auxiliary protrusions 39a and 39b can be used for caulking along the circumferential direction of the front frame 11 or the end frame 21. It is possible to improve the attachment strength of the front frame 11 or the end frame 21 to the yoke housing 1.

As shown in FIGS. 1 and 2, the central hole 3
Fixed portions 33a, 33b, 33c, 33d extending toward the center of the yoke housing 1 are formed on the inner peripheral surface of 1c. The fixing portions 33a, 33b, 33c, 33d
Is formed by separating a pair of protrusions by a predetermined distance so that magnets 36a, 36b, 36c, 36d described later can be positioned and fixed. Further, in this embodiment, magnets 36a, 36b, 36c, 36 described later are provided.
The fixed parts 33a and 33 at four locations, which are the same in number as the number of d
b, 33c, 33d are formed.

Further, as shown in FIG. 2, the fixing portions 33a,
Each of 33b, 33c and 33d is formed by 90 degrees in the circumferential direction. Further, in the radial direction of the yoke housing 1, a line passing through the center of the caulking protrusion 34a is a center line L1.
(Same as L1 in FIG. 4), the fixing portions 33a, 33
When the symmetry axis of the fixed portions 33d and 33c with respect to b is L2, the center line L1 and the symmetry axis L2 form a predetermined angle θ1. As will be described later, the angle θ is provided to stabilize the contact state between the brush and the commutator and improve the life of the brush.

The angle θ1 is determined according to the motor specifications. For example, the angle θ1 is determined according to the rotation speed, rotation torque, etc. of the armature 41 shown in FIG.
Further, the fixing portions 33b and 3 with respect to the fixing portions 33a and 33d.
When the symmetry axis of 3c is L3, the symmetry axis L2 and the symmetry axis L
3 is a right angle.

The fixed portions 33a, 33b, 33c, 3
3d is a magnet 36a, 36b, 36c, 36d described later.
Magnets 36a, 36
b, 36c, 36d may be sandwiched and fixedly held. With this configuration,
Adhesives, adhesive tapes, fixing wires, etc. for fixing the magnets 36a, 36b, 36c, 36d, which will be described later, can be eliminated.

Further, as shown in FIG. 6, the front frame 11 is made of a substantially disc-shaped non-magnetic metal material so as to close the one end opening of the yoke housing 1. A central hole 16 penetrating in the axial direction is formed in the center of the front frame 11. Around the center hole 16, a bearing housing 12 is formed which is recessed in the axial direction. The bearing housing 12 is configured to be able to accommodate a bearing 13 such as a rolling bearing.

As shown in FIGS. 4 and 6, the outer edge 14 of the front frame 11 that extends radially outward of the front frame 11 and is formed along the circumferential direction is formed at the radially outer end of the front frame 11. Is provided. This outer edge 1
Reference numeral 4 is formed so as to be capable of contacting the opening-side end surface of the yoke housing 1.

Further, as shown in FIG. 4, the outer edge portion 14
A notched portion 14a that is notched in the radial direction of the front frame 11 is formed at a predetermined position so that the front frame 11 can be positioned when assembled to the yoke housing 1. This notch 14a is
When the front frame 11 is assembled to the yoke housing 1, it is formed at three positions in alignment with the caulking protrusions 34a or the caulking protrusions 34b formed on the yoke housing 1. Further, the notch portion 14 a is formed as a relief portion so that the caulking protrusion 34 a or the caulking protrusion 34 b does not interfere with the outer edge portion 14.

Further, a caulking portion 14b which is caulked by the caulking projection 34a or the caulking projection 34b is formed on the side of the front frame 11 opposite to the side of the yoke housing in the radial direction inside the notch portion 14a.
The caulking portion 14b is formed in a substantially flat surface perpendicular to the axial direction of the front frame 11, and the caulking protrusion 34a or the caulking protrusion 34b causes the front frame 11 to be firmly attached to the yoke housing 1. It is formed so that it can be fixed.

Further, on the side surface of the yoke housing of the front frame 11, a folded portion 15 shown in FIG. 6 is formed on the inner side in the radial direction of the outer edge portion 14 in which the notch portion 14a is formed. The folded-back portion 15 is formed to have a predetermined length in the circumferential direction at the portion where the notch portion 14a of the yoke housing 1 is located, and is further formed to be double-folded in the axial direction. The folded-back portion 15 is formed to prevent the front frame 11 from rattling when the front frame 11 is assembled to the yoke housing 1. A part of the folded-back portion 15 is an inner circumference of the yoke housing 1. It is formed so as to press and abut the surface.

Further, between the central hole 16 and the outer edge portion 14,
An annular recess 17 is formed in a groove shape along the circumferential direction of the front frame 11. The recess 17 is formed so that when the front frame 11 is assembled to the yoke housing 1, a part of a winding wire 45 arranged in an armature 41 described later is received. By thus partially fitting the winding wire 45 into the recess 17, the motor 51 can be miniaturized in the axial direction.

The end frame 21 is made of a substantially disc-shaped non-magnetic metal material so as to close the one end opening of the yoke housing 1. At the center of the end frame 21, a concave bearing housing 22 is formed which is recessed in the axial direction. The bearing housing 12 is configured to accommodate a bearing 23 such as a slide bearing.

On the outer edge side of the end frame 21,
An upright portion 25 that is folded back in the axial direction of the end frame 21 is formed in an annular shape along the circumferential direction. This standing part 25
Is formed to prevent the end frame 21 from rattling when the end frame 21 is assembled to the yoke housing 1, and a part of the standing portion 25 is pressed against the inner peripheral surface of the yoke housing 1. Are formed so as to come into contact with each other.

As shown in FIGS. 6 and 8, the standing portion 25 is formed with an outer edge portion 24 extending outward in the radial direction. The outer edge portion 24 is the front frame 1 described above.
Similar to the outer edge portion 14 formed on the first housing 1, the outer housing 14 is formed so as to be able to contact the opening-side end surface of the yoke housing 1.

Further, the outer edge portion 24 is formed with a notch portion 24a which is notched in the radial direction of the end frame 21. The notch portion 24a is a caulking protrusion 34 when the end frame 21 is assembled to the yoke housing 1.
The a or the caulking projection 34b is formed as a relief portion so as not to interfere with the outer edge portion 24. Further, the notch portion 24a is provided on the yoke housing 1 in the end frame 21.
So that it can be positioned when assembled
Three positions are formed at the positions aligned with the caulking protrusions 34a or the caulking protrusions 34b formed on the yoke housing 1.

Further, a crimping portion 24b crimped by the crimping protrusion 34a or the crimping protrusion 34b is formed on the inner side in the radial direction of the notch portion 24a on the side of the end frame 21 opposite to the side of the yoke housing.
The caulking portion 24b is formed in a substantially flat surface perpendicular to the axial direction of the end frame 21, and is caulked by the caulking protrusion 34a or the caulking protrusion 34b, whereby the end frame 21 is firmly fixed to the yoke housing 1. It is formed so that it can be fixed.

Further, as shown in FIG. 6, between the bearing housing 22 and the outer edge portion 24, an annular recess 27 formed in a groove shape along the circumferential direction of the end frame 21 is formed. A circular plate-shaped brush holder 28 having an opening at the center can be disposed in the recess 27. Also,
The brush holder 28 includes a commutator 42, which will be described later.
Brushes 28a, 28 so that they are positioned radially with respect to
b, 28c, 28d are arranged. This brush 28
The a, 28b, 28c, and 28d are biased inward in the radial direction of the brush holder 28 by a spring or the like (not shown), and are arranged so as to be in sliding contact with a commutator 42 described later.

Further, as shown in FIG. 8, the brush 28a and the brush 28c are arranged on the diagonal line L4, and the brush 28b and the brush 2 are arranged on the diagonal line L4.
8 are respectively arranged on the diagonal line L5. Also,
The diagonal line L4 and the diagonal line L5 are orthogonal to each other. Also, 3
When a line L6 passing through the center of a predetermined cutout portion of the cutout portion 24a formed at the location is taken as a symmetry axis, a diagonal line L4
Forms a predetermined angle θ2 with the axis of symmetry L6. In this embodiment, θ2 is set to 45 degrees.

As shown in FIGS. 4 and 8, the end frame 21 has a connector 29 extending outward in the radial direction.
Is provided. Further, inside the connector 29, a wiring member (not shown) made of a conductive wire, a plate or the like is arranged.

One end of this wiring member is connected to the brushes 28a, 2
8b, 28c, 28d, respectively, and the other end is formed in a predetermined terminal shape so that it can be connected to a terminal of an external connector (not shown). The external connector is connected to a power supply device such as a battery (neither is shown) via a wire harness. Further, the brushes 28a, 28b, 28c, 28d are configured to be supplied with power by connecting the connector 29 to the above-mentioned external connector or the like.

The armature 41 shown in FIG.
, A core 44, a winding wire 45, a commutator 42, and the like. The core 44 is arranged in the center of the rotary shaft 43, and the winding 45 is wound around a predetermined position of the core 44.

Further, bearing support portions 43a and 43b having a diameter smaller than that of the central portion are formed on both ends of the rotary shaft 43. The bearing support portion 43a is configured to be able to fit inside the inner ring of the bearing 13. Further, the bearing support portion 43b is
The bearing 23 is configured to be capable of sliding contact with the inner peripheral surface of the bearing 23.

Further, the bearing support portion 43 of the rotary shaft 43
The commutator 42 is arranged between b and the core 44. The commutator 42 includes brushes 28a, 28
b, 28c, 28d are slidably in contact with each winding 45
It is configured to rectify the supply current to the.

The bracket 37 shown in FIG. 3 has an L-shaped cross section. That is, the bracket 37
Is formed by including a frame attachment portion 37a extending in the axial direction of the housing frame 31 and a vehicle body attachment portion 37b extending in a direction perpendicular to the frame attachment portion 37a.

The frame mounting portion 37a has a curvature that is substantially the same as that of the housing frame 31, and is formed with a predetermined length in the circumferential direction of the housing frame 31. Further, the vehicle body mounting portion 37b is provided with the housing frame 3 when the bracket 37 is assembled to the yoke housing 1.
1 is formed so as to extend outward in the radial direction.

Further, the magnets 36a, 36b, 3 shown in FIG.
6c and 36d are fixed parts 33a, 33b, 33c and 3
The housing frame 31 is formed with a predetermined length in the circumferential direction so as to be positioned and fixed between the protrusions of 3d. Also, the magnets 36a, 36b, 36c, 36d are
A cross section perpendicular to the axial direction is formed into a substantially fan shape so as to be arranged along the inner peripheral surface of the housing frame 31.

Then, a method of assembling the motor 51 having the above-mentioned configurations will be described with reference to FIG. In addition,
In the following assembling method, a state in which the brushes 28a, 28b, 28c, 28d and the connector 29 are already arranged in the brush holder 28 and the armature 41 is also assembled with all the constituent members will be described.

First, predetermined members are assembled to the front frame 11 and the end frame 21. That is, the bearing 13 is inserted into the bearing housing 12 of the front frame 11 and the bearing 23 is inserted into the bearing housing 22 of the end frame 21 to be fixed. Further, the brush holder 28 is disposed in the recess 27 of the end frame 21.

Next, the end frame 21 is assembled to the yoke housing 1. FIG. 9 and FIG. 10 show an assembled state diagram of the motor 51 in the assembly process. Here, FIG.
Is an assembly state diagram of the forward rotation specification motor 51,
FIG. 10 shows an assembled state diagram of the reverse rotation specification motor 51.

When the motor 51 shown in FIG. 7 has a normal rotation specification, the caulking protrusion 34b is provided with the notch 24 shown in FIG.
the opening 3 of the yoke housing 1 so that
The end frame 21 is positioned on the 1b side.

Then, with the end frame 21 positioned in this way on the side of the opening 31b of the yoke housing 1, the caulking protrusion 34b is bent inward in the radial direction of the end frame 21. Then, the caulking protrusion 34b is caulked to the caulking portion 24b shown in FIG. 8 by using a jig, a tool or the like not shown. At the same time, the auxiliary protrusion 39b formed on the caulking protrusion 34b is also caulked.

On the other hand, when the motor 51 is designed to rotate in the reverse direction, the state in which the opening 31b of the yoke housing 1 shown in FIG. 7 faces the end frame 21 side is changed to the state in which the opening 31a faces the end frame 21 side. The direction of the yoke housing 1 is changed so that Then, the caulking protrusion 34
The end frame 21 is positioned on the opening 31a side of the yoke housing 1 by inserting a into the notch 24a.

Then, with the end frame 21 positioned in this way on the side of the opening 31a of the yoke housing 1, the caulking protrusion 34a is bent inward in the radial direction of the end frame 21. Then, the caulking protrusion 34a is caulked on the caulking portion 24b shown in FIG. 8 by using a jig, a tool or the like not shown. At the same time, the auxiliary protrusion 39a formed on the caulking protrusion 34a is also caulked.

As described above, when the motor 51 shown in FIG. 7 is of the normal rotation type, the end frame 21 is attached to the opening 31b side of the yoke housing 1. On the other hand, when the motor 51 is of the reverse rotation type, the opening 31a of the yoke housing 1
Assemble the end frame 21 on the side.

Next, in the yoke housing 1, the magnets 36a,
Assemble 36b, 36c and 36d. Here, the four magnets 36a and 36b are inserted from the opening of the yoke housing 1 on the side opposite to the end frame 21 side to fix the fixed portions 33a and 3b.
Positioning is performed using 3b, 33c, and 33d.
That is, when assembling the forward rotation specification motor 51 shown in FIG. 9, the magnets 36a, 36b, 36c, 36d are inserted from the opening 31a side (front side of the drawing) of the yoke housing 1 and the magnets are fixed as shown in the drawing. 33a, 33b,
Positioning is performed between the pair of protrusions 33c and 33d.

On the other hand, the reverse rotation specification motor 5 shown in FIG.
1 is assembled, the opening 3 of the yoke housing 1
Magnets 36a, 36b, 36c,
36d and insert the fixing parts 33
It is positioned between a pair of protrusions a, 33b, 33c, 33d.

Then, the magnets 36a, 36b, 36c, 3
6d is positioned using the fixing portions 33a, 33b, 33c, 33d, respectively, and the magnets 36a, 36b, 3
The outer peripheral surfaces of 6c and 36d and the inner peripheral surface of the housing frame 31 are fixed using an adhesive, an adhesive tape, a fixing wire, or the like. As described above, the fixing portions 33a, 33b, 3
When the magnets 3c and 33d are configured to sandwich and fix the magnet 36, the magnet 36 is fixed without using the above-described adhesive agent, adhesive tape, fixing wire, or the like.

Here, as shown in FIG. 9, when the end frame 21 is assembled to the yoke housing 1, it passes through the center of a pair of magnets 36b, 36d facing each other out of the four magnets 36a, 36b, 36c, 36d. Diagonal line L7
Forms a predetermined angle θ3 with the diagonal line L5. In this way, the magnets 36a, 36b, 36c, 36d are arranged so as to be displaced in the rotation direction (R1 direction) of the armature 41 described above with reference to the brushes 28a, 28b, 28c, 28d.

On the other hand, as shown in FIG. 10, when the end frame 21 is assembled to the yoke housing 1, it passes through the center of a pair of magnets 36b, 36d facing each other out of the four magnets 36a, 36b, 36c, 36d. Diagonal line L7
Form a predetermined angle θ4 with the diagonal line L4. In this way, the magnets 36a, 36b, 36c, 36d are arranged so as to be displaced in the rotation direction (R2 direction) of the armature 41 described above with reference to the brushes 28a, 28b, 28c, 28d.

Thus, the plurality of magnets 36a, 36b,
36c and 36d are brushes 28a, 28b, 28c and 2
When the armature 41 is displaced in the rotation direction of the armature 41 described above with reference to 8d, the assembled motor 5 shown in FIG.
1, it is possible to stabilize the rectified state of the brushes 28a, 28b, 28c, 28d and the commutator 42,
The life of the brushes 28a, 28b, 28c, 28d can be improved.

Next, the armature 41 is inserted into the yoke housing 1 shown in FIG. Here, the armature 41 is inserted from the opening of the yoke housing 1 on the side opposite to the end frame 21. The armature 41 is inserted into the yoke housing 1 with the commutator 42 side of the armature 41 facing the yoke housing 1. Also, the end frame 21
The armature 41 is inserted into the yoke housing 1 until the thrust surface 43c of the rotary shaft 43 comes into contact with the braking surface 23a of the bearing 23 arranged in the.

Next, the front frame 11 is assembled to the yoke housing 1. 4 and 5 show the motor 51 after the front frame 11 is assembled. Here, FIG.
FIG. 5 is a diagram showing the motor 51 of the normal rotation specification after being assembled, and FIG. 5 is a diagram showing the motor 51 of the reverse rotation specification after being assembled.

When assembling the forward rotation specification motor 51 shown in FIG. 4, the opening 31a of the yoke housing 1 is formed by inserting the caulking projection 34a into the notch 14a.
The front frame 11 is positioned on the side. Further, at this time, the rotation support portion 43a of the rotation shaft 43 is not
To be press-fitted into the inner ring of.

Then, in this way, the front frame 11
Is positioned on the opening 31a side of the yoke housing 1, the caulking protrusion 34a is bent toward the inner side in the radial direction of the front frame 11. Then, the caulking protrusion 34
The a is crimped onto the crimped portion 14b by using a jig, a tool or the like not shown. At the same time, the auxiliary protrusion 39a formed on the caulking protrusion 34a is also caulked.

On the other hand, the reverse rotation type motor 51 shown in FIG.
When assembling the parts, the caulking protrusion 34b should be provided in the notch 1
The front frame 11 is positioned on the opening 31b side of the yoke housing 1 so as to be inserted in the yoke 4a.

Then, in this way, the front frame 11
Is positioned on the opening 31b side of the yoke housing 1, the caulking protrusion 34b is bent toward the inner side in the radial direction of the front frame 11. Then, the caulking protrusion 34
The b is crimped onto the crimped portion 14b by using a jig, a tool or the like (not shown). At the same time, the auxiliary protrusion 39b formed on the caulking protrusion 34b is also caulked.

As described above, when assembling the motor 51 of the normal rotation specification shown in FIG. 4, the end frame 21 is attached to the opening 31a side of the yoke housing 1. on the other hand,
To assemble the reverse rotation specification motor 51 shown in FIG.
The end frame 2 is provided on the opening 31b side of the yoke housing 1.
Assemble 1.

Next, the bracket 37 shown in FIG. 7 is attached to the yoke housing 1 at a predetermined position. Here, according to the forward / reverse rotation specifications of the motor 51, the bracket 37 is attached to the yoke housing 1 as shown in FIG. 4 or 5.

That is, when assembling the motor 51 of the normal rotation specification shown in FIG. 4, the axial direction of the through hole 37c shown in FIG. 7 becomes parallel to the axial direction of the yoke housing 1, and the vehicle body mounting portion 37b and the frame. The mounting direction of the bracket 37 is determined so that the orthogonal portion 37d of the mounting portion 37a faces the opening 31b side of the yoke housing 1.

Then, with the mounting direction thus determined, the bracket 37 is fixed to a predetermined portion on the surface of the yoke housing 1 by welding or the like.

On the other hand, the reverse rotation type motor 51 shown in FIG.
7, the axial direction of the through hole 37c shown in FIG. 7 is parallel to the axial direction of the yoke housing 1, and the orthogonal portion 37d of the vehicle body mounting portion 37b and the frame mounting portion 37a is located on the opening 31a side of the yoke housing 1. The mounting direction of the bracket 37 is determined so as to face.

Then, with the mounting direction thus determined, the bracket 37 is fixed to a predetermined portion on the surface of the yoke housing 1 by welding or the like.

In this embodiment, the three brackets 37 are attached to the yoke housing 1 at the positions aligned with the caulking protrusions 34a or the caulking protrusions 34b in the circumferential direction.

As described above, the motor 51 in which the rotating direction of the armature 41 is different as shown in FIG. 4 or FIG.
Assemble. After the assembly process, a visual inspection, an operation inspection, a continuity inspection, etc. are performed if necessary.

In the motor 51 thus assembled, both ends of the rotating shaft 43 shown in FIG. 4 are supported by the bearings 13 and 23, and the armature 41 is rotatable.

Further, the brushes 28a, 28b, 28c, 2
8d is in sliding contact with the commutator 42. Therefore,
A predetermined power is supplied to the connector 29 from an external power supply device (not shown), so that the winding 45 causes the magnet 36 to move.
Fields a, 36b, 36c, 36d, armature 41
Is rotatable in the yoke housing 1. That is, in the motor 51 shown in FIG. 4, the armature 41 rotates in the R1 direction in the energized state. on the other hand,
In the motor 51 shown in FIG. 5, the armature 41 is in the energized state.
Rotates in the R2 direction.

Further, as shown in FIGS. 4 and 5, a fastener such as a bolt (not shown) is inserted into the through hole 37c of the bracket 37, and the fastener is screwed into a screw groove formed in the vehicle body (not shown). By doing so, the motor 51 can be fixed to the vehicle body or the like.

As described above, according to this embodiment, the following effects can be obtained. (A) The motor 51 according to the embodiment of the present invention shown in FIG.
Then, since the caulking protrusions 34a and 34b as engaging portions capable of engaging with either the front frame 11 or the end frame 21 are formed on both ends of the housing frame 31, the front frame 11 or the end frame 21 is yoked. Any opening 31a, 31 of the housing 1
It can also be arranged on the b side.

Further, since the yoke housing 1 is formed in a hollow cylindrical shape, it has a rotationally symmetric shape with a line perpendicular to the longitudinal direction as the axis of symmetry.

Therefore, the front frame 11 or the end frame 21 is connected to any opening 31 of the yoke housing 1.
Since the motor 51 can be assembled even if it is arranged on the a and 31b sides, it is possible to improve manufacturing efficiency and reduce manufacturing cost.

(B) Further, the plurality of magnets 36a, 36b,
36c and 36d are brushes 28a, 28b, 28c and 2
Since they are arranged so as to be displaced in the rotational direction of the armature 41 with reference to 8d, the brushes 28a, 28b, 28c, 28d and the commutator 4 in the motor 51 after assembly are arranged.
The rectified state of 2 can be stabilized. Therefore, if the yoke housing 1 is used for the motor 51, the brush 28
The life of a, 28b, 28c, 28d can be improved.

Further, even when the motor 51 in which the armature 41 is driven to rotate in different directions is manufactured, the front frame 11 or the end frame 21 is connected to the yoke housing 1.
It can be arranged on either side of the openings 31a, 31b. Therefore, the yoke housing 1 can be applied to any motor 51.

(C) Further, the housing frame 31 is
When molded by curling a thin plate,
The number of processing steps can be reduced. Therefore, in the yoke housing 1 using such a housing frame 31, it is possible to improve the manufacturing efficiency and reduce the manufacturing cost.

(D) Further, according to the motor 51 using the yoke housing 1, the manufacturing cost can be reduced and the manufacturing efficiency can be improved by sharing the components of the yoke housing 1.

The embodiment of the present invention can be modified as follows. Hereinafter, modified examples of the embodiment of the present invention will be described.

(1) The motor 51 is not limited to mounting the front frame 11 or the end frame 21 to the yoke housing 1 using the caulking protrusions 34a and 34b.

Therefore, for example, the outer edge of the front frame 11 or the outer edge of the end frame 21 may be press-fitted and fixed to the inner peripheral surfaces of the openings 31a and 31b of the yoke housing 1. Further, fitting claws are provided on the front frame 11 and the end frame 21, and fitting claws are also provided on the openings 31a, b side of the yoke housing 1 so that these claws fit together. Good.

(2) In the motor 51, for convenience,
Although the number of the magnets 36a, 36b, 36c, 36d is four, the present invention is not limited to this, and the number is two.
Number of pieces, 8 pieces, etc. may be used. Also, the brushes 28a, 28b, 2
The numbers of 8c and 28d are magnets 36a, 36b, 36c and 3
The number is not necessarily the same as 6d, and the number is not limited to four. For example, the brushes 28a, 28b, 28
The number of c and 28d may be two.

(3) The order of the assembling methods of the motor 51 described above is a preferred example, and the order of the assembling methods can be changed depending on the work efficiency and the like. For example, the front frame 11 is assembled to the yoke housing 1, the armature 41 is inserted into the yoke housing 1 from the side opposite to the commutator 42, and then the end frame 21 is attached to the yoke housing 1.
You may attach it to. That is, the assembly order can be variously modified.

[0100]

As described above in detail, the yoke housing according to the present invention can be applied to any motor even when manufacturing a motor in which the armature is driven to rotate in different directions.

Further, according to the motor using the yoke housing of the present invention, it is possible to reduce the manufacturing cost and improve the manufacturing efficiency by sharing the yoke housing parts.

[Brief description of drawings]

FIG. 1 is a sectional development view of a yoke housing according to an embodiment of the present invention.

FIG. 2 is a front view of the yoke housing according to the embodiment of the present invention.

FIG. 3 is a side view of the motor according to the embodiment of the present invention.

FIG. 4 is a front view of the forward rotation motor according to the embodiment of the present invention.

FIG. 5 is a front view of the reverse rotation motor according to the embodiment of the present invention.

6 is a cross-sectional view taken along line CC of FIG.

FIG. 7 is an explanatory diagram showing a method of assembling the motor according to the embodiment of the present invention.

FIG. 8 is a diagram showing a configuration of an end frame according to an embodiment of the present invention.

FIG. 9 is an assembly state diagram of the forward rotation motor in the assembly process in the embodiment of the present invention.

FIG. 10 is an assembly state diagram of the reverse rotation motor in the assembly process in the embodiment of the present invention.

[Explanation of symbols]

1 yoke housing, 11 front frame, 1
2,22 bearing housing, 13,23 bearing, 14,
24 outer edge part, 14a, 24a, 35a, 35b notch part, 14b, 24b caulking part, 15 folded part, 1
6, 31c Central hole, 17, 27 Recessed portion, 21 End frame, 21 Anti-end frame, 23a Braking surface,
25 standing portion, 28 brush holder, 28a, 28b,
28c, 28d brush, 29 connector, 31 housing frame, 31a, 31b opening, 33a, 33
b, 33c, 33d fixing part, 34a, 34b caulking protrusion, 36a, 36b, 36c, 36d magnet, 37
Bracket, 37a frame mounting portion, 37b vehicle body mounting portion, 37c through hole, 37d orthogonal portion, 39
a, 39b auxiliary protrusion, 41 armature, 42 commutator, 43 rotating shaft, 43a, 43b bearing support part, 43c thrust surface, 44 core, 45 winding, 5
1 motor

Continued front page    F-term (reference) 5H605 AA08 BB05 BB09 CC01 CC02                       CC09 EA02 EB10 EC05 FF00                       GG03 GG13                 5H615 AA01 BB01 BB04 BB14 PP28                       SS11                 5H622 CA02 CA07 CB03 PP10 PP17                       PP19                 5H623 AA10 BB07 GG14 JJ06 LL02                       LL04 LL09 LL16

Claims (4)

[Claims] 1. A yoke housing for a motor having a plurality of magnets, brushes, and armatures, wherein a hollow cylindrical housing frame and both front frames and end frames can be engaged with both end sides of the housing frame. And an engaging portion formed on the yoke housing. 2. A fixing part for fixing the plurality of magnets at substantially equal intervals in a circumferential direction is formed on an inner peripheral surface of the housing frame, and the plurality of magnets are fixed by the fixing part with respect to the brush. 2. The yoke housing according to claim 1, wherein the armature is displaced from the armature in a rotating direction. 3. The yoke housing according to claim 1, wherein the housing frame is formed into a hollow cylindrical shape by curling a thin plate. 4. A motor using the yoke housing according to any one of claims 1 to 3.