JPH1155894A - Motor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent an abnormal sound due to small vibration on motor actuation from being generated by forming a cutting part in a yoke diameter direction at the end part side of the engagement projection part of an end frame, by bending at least one part of a cutting piece due to the cutting part to an engagement recessed part side, and by connecting the yoke and the end frame. SOLUTION: At least one part of a segment 13 being formed in a yoke 10 is bent to the side of an engagement projection part 21. Also, a cutting part 22 is formed in the diameter direction B of the yoke 10 at the end part side of the engagement projection part 21 of an end frame 20. At the cutting part 22, a segment 23 is formed at the engagement projection part 21, and one part of the segment 23 is bent to the side of an engagement recessed part 11. At the engagement part 11 of the yoke 10, the segment 13 presses the engagement projection part 21 of the end frame 20 for caulking, thus retaining the yoke 10 and the end frame 20 in a longitudinal direction A of the yoke. Furthermore, the segment 23 presses the engagement recessed part 11 of the yoke 10 for caulking, thus retaining the yoke 10 and the end frame 20 in a diameter direction B of the yoke.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fan motor for use in an air conditioner for an automobile, for example, which prevents the yoke from being slightly vibrated when the motor is operated due to insufficient strength in the yoke radial direction. About the motor that can be used.

[0002]

2. Description of the Related Art Conventionally, motors used for vehicles,
For example, in a fan motor or the like used in a vehicle air conditioner, noise caused by vibration at the time of operation of the motor directly causes noise in the vehicle interior.

For this reason, techniques for preventing abnormal noise have been proposed. For example, in the prior art shown in FIGS. 7 to 10, as shown in FIG. 8, an engagement recess 111 is formed in a yoke 110, and an engagement projection 121 is formed in an end frame 120. The yoke 110 and the end frame 120 are connected to each other by engaging the engagement protrusion 121 of the end frame 120 with the mating recess 111 as shown in FIG. At this time, a gap C having a predetermined width is provided between the yoke 110 and the end frame 120 as shown in FIG.
By assembling without press-fitting, the assembling is facilitated.

In order to hold the yoke 110 and the end frame 120 configured as described above, a notch 112 is formed in the longitudinal direction A 'of the yoke 110 as shown in FIG.
Is formed, and a piece 113 formed by the cut 112 is bent toward the engaging projection 121 and caulked, so that the yoke 110 and the end frame 120 are formed.
Is known.

[0005] However, in the above configuration, a coupling force in the longitudinal direction A 'of the yoke 110 can be obtained, but there is a problem that the coupling force in the radial direction of the yoke, which is the direction of the force actually applied to the yoke during operation of the motor, is weak. Was. Therefore, there is a problem that the operation of the motor causes micro-vibration of the yoke 110, which causes abnormal noise.

[0006] Alternatively, as shown in FIG.
At 23768, with the lower end bracket 103 and the upper end bracket 102 fixed to the cylindrical housing 101, the fan motor M is pressed into the apparatus main body 105 of the holding device 104, and then the end of the upper end bracket 102 is A technique is disclosed in which the fan motor M is fixed to the apparatus main body by folding the opening edge 106 of the opening 105.

[0007]

According to the prior art, since the cylindrical housing 101 is press-fitted into the apparatus main body 105, the cylindrical housing 101 and the apparatus main body 105 are press-fitted.
Can be obtained. However, since the cylindrical housing 101 and the upper end bracket 102 are configured to be fixed only by bending the end of the upper end bracket 102, the coupling force is weak, and noise is generated due to slight vibration during motor operation. There was an inconvenience that it would occur.

In the above prior art, the fan motor M is pressed into the device main body 105 of the holding device 104 in a state where the lower end bracket 103 and the upper end bracket 102 are fixed to the cylindrical housing 101. However, there is a problem that the cylindrical housing is deformed at the time of press-fitting, the press-fitting load increases, and strict dimensional control at the component level is required.

In addition to the above-mentioned prior art, the joint between the yoke and the end frame is fixed by rolling over the entire circumference, or the joint is held by welding, or the yoke and the end frame are integrally formed by squeezing. However, there is a problem that the cost is greatly increased.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a motor which can prevent abnormal noise caused by micro-vibration during operation of the motor and has good assemblability.

[0011]

According to a first aspect of the present invention, there is provided a motor comprising: a yoke; and a thick end frame disposed to cover an opening of the yoke. Is provided with a plurality of engagement recesses at the end on the opening side, and the end frame is provided with a plurality of engagement protrusions protruding outward, and the engagement recess of the yoke and the engagement protrusion of the end frame are provided. In the motor engaged with the portion, the yoke is formed with a cut portion in the yoke longitudinal direction on at least one side of the engaging concave portion, and at least a part of the cut by the cut portion is bent toward the engaging convex portion. A notch is formed in the end side of the engaging projection of the end frame in the radial direction of the yoke, and at least a part of the cut by the notching is bent toward the engaging recess, so that the yoke and the end flange are bent. And wherein the bound and over arm.

According to a second aspect of the present invention, there is provided a motor including a yoke and a thick end frame disposed to cover the opening of the yoke. A plurality of engaging concave portions provided in the portion, the end frame is provided with a plurality of engaging convex portions protruding outward, and the engaging concave portion of the yoke and the engaging convex portion of the end frame are engaged. In the motor, the yoke has a notch formed in a longitudinal direction of the yoke on at least one side of the engaging recess, and at least a part of the cut by the notch is bent toward the engaging protrusion, and the yoke is an end face of the opening. , A notch is formed in a circumferential direction of the yoke, and at least a part of a cut by the notch is bent toward the end frame, so that an inner peripheral surface of the yoke and the end frame are bent. Brought into contact with each other and the outer circumferential surface of, and wherein the bound and said yoke said end frame.

According to a third aspect of the present invention, there is provided a motor comprising: a yoke; and a thick end frame disposed to cover an opening of the yoke. A plurality of engaging concave portions provided in the portion; a plurality of engaging convex portions protruding outwardly provided in the end frame; and the engaging concave portion of the yoke and the engaging convex portion of the end frame are engaged. In the motor, the yoke has a notch formed in the yoke longitudinal direction on at least one side of the engagement concave portion, and at least a part of a section formed by the notch is bent toward the engagement convex portion, and the end frame is formed of the yoke. A notch is formed in a circumferential direction of the yoke on a surface covering the opening side, and at least a part of a section formed by the notch is bent toward the yoke, and an inner peripheral surface of the yoke and the Brought into contact with each other and the outer circumferential surface of the command frame, and wherein the bound and said yoke said end frame.

According to a fourth aspect of the present invention, there is provided a motor comprising: a yoke; and a thick end frame disposed so as to cover the opening of the yoke. A plurality of engaging concave portions provided in the portion, the end frame is provided with a plurality of engaging convex portions protruding outward, and the engaging concave portion of the yoke and the engaging convex portion of the end frame are engaged. In the motor, the yoke has a cut portion formed in the yoke longitudinal direction on at least one side of the engagement concave portion, and at least a part of the cut section formed by the cut portion is bent toward the engagement convex portion, and the yoke is formed on the outer peripheral surface of the end frame. Is formed with a plurality of continuous convex portions, at least the tip side of the convex portions is press-fitted into the yoke and crushed and assembled, and the inner peripheral surface of the yoke and the outer peripheral surface of the end frame are brought into contact with each other. , And wherein the bound and the said yoke end frame.

A cut portion is formed in the end frame at the end of the engaging projection of the end frame in the radial direction of the yoke, and at least a part of the cut by the cut portion is bent toward the engaging concave portion of the yoke. Preferably, the yoke and the end frame are connected.

[0016]

In the motor according to the present invention, at least one side of the engagement recess of the yoke is formed with a cutout in the longitudinal direction of the yoke, and the cutout is used to divide the yoke to form a cutout. Fold it to the side. Also, a cut portion is formed in the yoke radial direction on the end side of the engagement protrusion of the end frame, and the engagement protrusion is divided by the cut portion to form a piece. At least a part of this section is bent toward the engagement concave side. In this way, the yoke and the end frame are crimped to each other and joined together.

According to the above structure, the yoke and the end frame are securely held in both the longitudinal direction and the radial direction of the yoke. Even if a force is applied, generation of abnormal noise can be prevented without the yoke vibrating slightly.

Further, as described above, in the motor having the configuration in which the piece formed in the engaging concave portion of the yoke is bent toward the engaging convex portion to hold the yoke and the end frame in the longitudinal direction of the yoke, The peripheral surface and the outer peripheral surface of the end frame are in contact with each other, and the yoke and the end frame are held in the radial direction of the yoke.

That is, in order to hold the yoke and the end frame in the radial direction of the yoke, a notch is formed in the end face of the opening of the yoke in the circumferential direction, and a section formed by the notch is bent toward the end frame. The inner peripheral surface of the yoke and the outer peripheral surface of the end frame are brought into contact with each other.

Alternatively, a cut portion is formed in a circumferential direction of the yoke on a surface of the end frame which covers the opening portion of the yoke, and a cut piece formed by the cut portion is bent toward the yoke, thereby forming an inner circumferential surface of the yoke. And the outer peripheral surface of the end frame are brought into contact with each other.

Further, a plurality of continuous projections are formed on the outer peripheral surface of the end frame, and at least the distal end side of the projections is pressed into the yoke and crushed and assembled.

As described above, since the inner peripheral surface of the yoke and the outer peripheral surface of the end frame are in contact with each other, the yoke and the end frame are held in the radial direction of the yoke, and the micro-vibration generated in the yoke is prevented. be able to. At this time, a cut portion is formed in the radial direction of the yoke on the end side of the engaging convex portion of the end frame, and a section formed by the cut portion is bent toward the engaging concave portion to join the yoke and the end frame. Thereby, the yoke and the end frame can be more firmly fixed.

[0023]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A motor according to the present invention has a
And a thick end frame 20 disposed to cover the opening 10 a side of the yoke 10.
The yoke 10 is provided with a plurality of engagement recesses 11 at the end on the opening 10a side.
Are provided with a plurality of engaging projections 21 protruding outward.

A gap C having a predetermined width is provided between the yoke 10 and the end frame 20 to facilitate assembly.
Is provided.

The engaging concave portion 11 of the yoke 10 and the engaging convex portion 21 of the end frame 20 are engaged with each other. The yoke 10 has a cut 12 formed in at least one side of the engaging recess 11 in the yoke longitudinal direction A, and the cut 12 forms a cut 13 in the yoke 10. Bend to the part 21 side. In addition, a cut portion 22 is formed in the end direction of the engagement protrusion 21 of the end frame 20 in the radial direction B of the yoke 10, and a cut 23 is formed in the engagement protrusion 21 by the cut portion 22. At least a part of the section 23 is bent toward the engagement recess 11.

With the above-described configuration, in the engaging concave portion 11 of the yoke 10, the section 13 presses the engaging convex portion 21 of the end frame 20 to caulk.
The yoke 10 and the end frame 20 are held in the longitudinal direction A of the yoke. Further, the section 23 presses and crimps the engaging concave portion 11 of the yoke 10, whereby the yoke 10 and the end frame 20 are held in the radial direction B of the yoke.

As described above, since the yoke 10 and the end frame 20 are securely held in both the longitudinal direction A and the radial direction B of the yoke 10, when the motor operates, the yoke 10 and the end frame 20 are attached to the yoke 10 in the longitudinal and radial directions. Even if a force in the direction is applied, generation of abnormal noise can be prevented without the yoke 10 vibrating slightly.

Since the gap C having a predetermined width is formed between the yoke 10 and the end frame 20 in advance, the yoke 10 and the end frame 20 are assembled without being press-fitted. , The yoke 10 and the end frame 20.

Then, the yoke 10 and the end frame 20
Since the yoke 10 is assembled without press-fitting, the yoke 10 is not deformed at the time of assembly, and strict dimensional control at the component level is not required.
And the end frame 20 can be easily assembled.

Further, as described above, the section 13 formed with the engaging concave portion 11 of the yoke 10 is bent toward the engaging convex portion 21 to thereby hold the yoke 10 and the end frame 20 in the longitudinal direction A of the yoke. In the yoke 1
The inner surface of the yoke 10 and the outer surface of the end frame 20 are held in the radial direction B of the yoke by bringing the 0 and the end frame 20 into contact with each other.

That is, the end face 1 of the opening 10a of the yoke 10
0b, the notch 14 is formed in the circumferential direction of the yoke 10
Are formed, and the cut section 14 forms a section 16 in the yoke 10. The section 16 is bent toward the end frame 20 and disposed so as to fill the gap C between the yoke 10 and the end frame 20, whereby the inner peripheral surface of the yoke 10 and the outer peripheral surface of the end frame 20 are mutually connected. In contact, the yoke 10 and the end frame 20 are held in the radial direction B of the yoke.

Alternatively, the yoke 10 of the end frame 20
A cut portion 24 is formed in the circumferential direction of the yoke 10 on a surface 20a that covers the opening 10a side of the
Thereby, the piece 26 is formed in the end frame 20.
The section 26 is bent toward the yoke 10 and the yoke 10
The inner peripheral surface of the yoke 10 and the outer peripheral surface of the end frame 20 are in contact with each other so that the yoke 10 and the end frame 20 are in contact with each other. It is held in the radial direction B.

Further, a plurality of continuous projections 27 are formed on the outer peripheral surface of the end frame 20, and at least the distal end side of the projections 27 is pressed into the yoke 10 and crushed and assembled. Then, the end frame 20 is press-fitted into the yoke 10 so that the yoke 10 and the end frame 20 are pressed.
Are held in the radial direction of the yoke.

With the above configuration, the yoke 10 and the end frame 20 are held in the yoke radial direction B. Further, since the distal end side of the convex portion 27 is configured to be pressed against and inserted into the inner peripheral surface of the yoke, the press-fit area can be reduced, the press-fit during press-fit is small, and the assembling can be easily performed.

Further, since the distal end side of the convex portion 27 is press-fitted while being crushed and presses the inner peripheral surface of the yoke 10, deformation due to press-fitting of the yoke 10 can be prevented, and a dimensional error can be absorbed. Strict dimensional control is not required.

[0036]

An embodiment of the present invention will be described below with reference to the drawings. The members, arrangements, and the like described below do not limit the present invention, and can be variously modified within the scope of the present invention.

FIG. 1 shows a first embodiment according to the present invention, and is a perspective view showing a yoke and an end frame. The yoke 10 of the present example is formed in a cylindrical shape, and has an opening 10.
a, and a plurality of engagement recesses 11 formed in the opening.

The end frame 20 of the present embodiment is
And has an engaging projection 21 projecting outward. The yoke 10 and the end frame 20 of the present embodiment are connected by engaging the engagement concave portion of the yoke 10 with the engagement projection 21 of the end frame 20. Further, between the yoke 10 and the end frame 20 of the present embodiment, as in FIG.
A gap C having a predetermined width is provided for facilitating assembly.

Next, assembly and holding of the yoke 10 and the end frame 20 in this embodiment will be described. As shown in FIG. 1, arrows A
A cut is made in the longitudinal direction indicated by
To form The yoke 10 is divided by the cuts 12, and cuts 13 are formed on both sides of the engagement recess 11. The section 13 is bent toward the engaging projection 21 of the end frame 20 engaged with the engaging recess 11.

As described above, the engagement protrusions 21 of the end frame 20 that engage with the engagement recesses 11 of the yoke 10 are pressed and caulked from both sides by the cut pieces 13 formed on the yoke 10 to engage the engagement protrusions 21. It is fixed in the recess 11. Thus, the yoke 10 and the end frame 20 are held in the longitudinal direction A of the yoke.

Further, the engaging projection 21 of the end frame 20
Then, a cut is made in the radial direction B of the yoke 10 indicated by the arrow B to form a cut portion 22. Notch 22
Are formed at two places on both end sides of the engaging projection 21.

Then, the engaging projection is divided by the cut 22 formed in the engaging projection 21, and the cut pieces 23 are formed at both ends of the engaging projection. This section 23
It is bent toward the engagement recess 11.

As described above, the engaging recess 11 is pressed and caulked by the piece 23 formed on the end frame 20, thereby holding the yoke 10 and the end frame 20 in the radial direction B of the yoke.

As described above, the yoke 10 and the end frame 20 are securely held in both the longitudinal direction A and the radial direction B of the yoke 10, and the longitudinal and radial forces are applied to the yoke 10 by operating the motor. Is added,
The generation of abnormal noise can be prevented without the yoke 10 being slightly vibrated.

In this embodiment, as described above, a gap C having a predetermined width is formed between the yoke 10 and the end frame 20 in advance. By providing the gap C, in assembling the yoke 10 and the end frame 20, the yoke 10 and the end frame 20 can be assembled without press fitting. Then, after assembling the yoke 10 and the end frame 20, it is possible to bend the pieces formed on the yoke 10 and the end frame 20 to connect and hold the yoke 10 and the end frame 20.

As described above, the yoke 10 and the end frame 2
Since it is assembled without being press-fitted to 0, the yoke 10 is not deformed in the assembling, and strict dimensional control at the component level is not required, and a high assembling property can be secured.

FIG. 2 shows a second embodiment of the present invention. In this embodiment, the same members and the like as those in the above embodiment are denoted by the same reference numerals, and description thereof will be omitted.

The yoke 10 and the end frame 20 of this embodiment
Are connected to each other by engaging the engaging protrusion 21 of the end frame 20 with the engaging recess of the yoke 10 in the same manner as in the above embodiment.

Also in this embodiment, a gap C having a predetermined width is formed between the yoke 10 and the end frame 20 for facilitating the assembly, similarly to the prior art shown in FIG. As a result, the yoke 10 and the end frame 20 can be easily assembled.

In this embodiment, similarly to the above embodiment, longitudinal cuts 12 are formed on both sides of the engagement recess 11 of the yoke 10. Then, the yoke 10 is divided by the cuts 12, and cuts 13 are formed on both sides of the engagement recess. This section 13 is inserted into the engagement recess 11.
Is bent toward the engaging protrusion 21 of the end frame 20 engaged with the end frame 20, and the engaging protrusion 21 is caulked by the cut piece 13 and fixed. In this way, the yoke 10 and the end frame 20 are held in the longitudinal direction of the yoke 10.

Further, in this embodiment, in order to hold the yoke 10 and the end frame 20 in the radial direction of the yoke, a circumferential cut 14 is formed in the end face 10b of the opening 10a of the yoke 10. The circumferential cut portion 14 has one end connected to the longitudinal cut 12, and a cut 16 described below can be bent toward the end frame 20 at the other end. A cut 15 is formed so as to be possible.

Then, the notch 14 formed in the circumferential direction of the notch 14 and one end of the notch 14 is formed.
5, the yoke 10 is divided, and the section 16 is formed. Then, the section 16 is bent toward the end frame 20.

The section 16 contacts the end frame 20 and presses the end frame 20. In this manner, the section 16 is bent and disposed so as to fill the gap C between the yoke 10 and the end frame 20.
The inner peripheral surface of the yoke 10 and the outer peripheral surface of the end frame 20 abut against each other, and the yoke 10 and the end frame 20 are held in the radial direction of the yoke.

As described above, the yoke 10 and the end frame 20 are securely held in both the longitudinal direction and the radial direction of the yoke 10, and when the motor operates, the longitudinal and radial forces are applied to the yoke 10. However, generation of abnormal noise can be prevented without the yoke 10 vibrating slightly.

In this embodiment, the notch 2 is formed in the engaging projection 21.
2 is not formed, but as in the embodiment shown in FIG. 1, the engaging protrusion 21 is divided by the cuts 22 formed in the engaging protrusion 21, and the cut pieces 23 are provided at both ends of the engaging protrusion 21. And the section 23 may be configured to be bent and fixed toward the engagement recess 11. With such a configuration, more secure fixing is possible.

FIG. 3 shows a third embodiment of the present invention. In this embodiment, the same members and the like as those in the above embodiment are denoted by the same reference numerals, and description thereof will be omitted.

Also in the present embodiment, between the yoke 10 and the end frame 20, for facilitating assembly,
A gap C having a predetermined width is formed, enabling easy assembly of the yoke 10 and the end frame 20.

In the second embodiment, the notch 1 in the circumferential direction is formed on the end face 10b of the opening 10a of the yoke 10.
4 shows an example in which the yoke 10 and the end frame 20 are held, but in this embodiment, the end frame 2
0, the surface 20 covering the opening 10a side of the yoke 10
A cutout 24 in the circumferential direction of the yoke 10 is formed at a. Then, the notch 2 in the circumferential direction is formed so that the section 26 described below can be bent toward the yoke 10 side.
Notched portions 25 are formed on both end sides of 4.

With the above configuration, the end frame 2 is formed by the notches 24 in the circumferential direction and the notches 25 formed at both ends of the notches 24.
0 is divided to form a section 26. Then, the section 26 is bent toward the yoke 10.

The section 26 contacts the yoke 10 and presses the yoke 10. Since the section 16 is disposed so as to fill the gap C between the yoke 10 and the end frame 20, the inner peripheral surface of the yoke 10 and the outer peripheral surface of the end frame 20 come into contact with each other, and It is held in the radial direction.

In this embodiment, the notch 2 is formed in the engaging projection 21.
2, but a configuration in which the notch 22 is not formed in the engagement projection 21 as in the embodiment shown in FIG.

FIGS. 4 to 6 show a fourth embodiment of the present invention. FIG. 4 is a perspective view showing a state before the yoke and the end frame are assembled. FIG. 5 shows the end frame pressed into the yoke. FIG. 6 is a perspective view showing a state where the yoke and the end frame are held. In this embodiment, the same members and the like as those in the above embodiment are denoted by the same reference numerals, and description thereof will be omitted.

In the end frame 20 of the present embodiment, as shown in FIG.
In addition, a triangular projection (sawtooth) projection 27 is formed. The end frame 20 is press-fitted into the yoke 10 at the triangular projection (sawtooth) projection 27.

When the end frame 20 is press-fitted into the yoke 10, the tip of the triangular projection (sawtooth-shaped) projection 27 formed on the end frame is crushed by being pressed against the inner peripheral surface of the yoke 10, and FIG. As shown, the end frame 20 is pressed into the yoke 10. Then, the end frame 20 is press-fitted into the yoke 10, so that the yoke 10 and the end frame 20 can be held in the yoke radial direction.

After the end frame 20 is press-fitted into the yoke 10, as shown in FIG. 6, a notch 12 in the longitudinal direction of the yoke is formed on both sides of the engagement concave portion 11 of the yoke 10.
The section 13 formed by the cut section 12 is bent toward the engaging projection 21 of the end frame 20 engaged with the engaging recess 11, and the section 13 engages the engaging projection 21.
And fix it. Thus, the yoke 10 and the end frame 20 can be held in the yoke longitudinal direction.

As described above, according to the structure of this embodiment, the yoke is securely held in both the longitudinal direction and the radial direction. Further, since the distal end side of the convex portion 27 is configured to be pressed against and inserted into the inner peripheral surface of the yoke, the press-fit area can be reduced, the press-fit during press-fit is small, and the assembling can be easily performed.

Further, since the distal end side of the convex portion is press-fitted while being crushed and presses the inner peripheral surface of the yoke, deformation due to press-fitting of the yoke can be prevented. Furthermore, since the tip side of the convex portion 27 is press-fitted while being crushed, a dimensional error can be absorbed, and strict dimensional control at the component level is not required.

In this embodiment, the notch 22 is not formed in the engaging projection 21. However, as in the embodiment shown in FIGS. 1 and 3, the notch 22 is formed by the notch 22 formed in the engaging projection 21. It is also possible to divide the mating convex portion 21 and form a piece 23 at each end of the engaging convex portion 21, and to bend the piece 23 toward the engaging concave portion 11 and fix it. With such a configuration, more secure fixing is possible.

In the first to third embodiments, the example in which the longitudinal cut portion 12 and the circumferential cut portion 14 are formed on both sides of the engaging concave portion 11 has been described. It may be formed on at least one side of the recess 11.

The cut portion 22 in the yoke radial direction B and the cut portion 24 in the circumferential direction of the yoke formed on the end frame 20 have been described as being formed at two places. What is necessary is just to be formed.

The yoke 10 and the end frame 20
Although the entire piece formed in the above is bent, it is sufficient that at least a part of the piece is configured to be brought into contact with the yoke 10 or the end frame 20 or pressed.

Furthermore, although an example has been shown in which a gap C is provided between the yoke 10 and the end frame 20 to enable a high assembling property, a configuration in which the gap C is not provided may be employed. Although the example in which the yoke is formed in a cylindrical shape is shown, the invention is not limited to this.

[0073]

As described above, in the motor in which the engaging concave portion of the yoke and the engaging convex portion of the end frame are engaged, the cut portions are formed in the yoke and the end frame, respectively. By bending and crimping the section, the yoke and the end frame are held in both the longitudinal direction and the radial direction of the yoke.

A gap having a predetermined width is provided between the yoke and the end frame. According to the configuration of the present invention, after assembling the yoke and the end frame, the section is bent and the yoke and the end frame are bent. End frame and can be held. In this way, the yoke and the end frame can be assembled without press-fitting, so that the yoke does not deform during assembly, and strict dimensional control at the component level is not required. The frame can be easily assembled.

As described above, the yoke and the end frame
Since the yoke is securely held in both the longitudinal direction and the radial direction, generation of abnormal noise can be prevented without the yoke being slightly vibrated.

Alternatively, a triangular projection (sawtooth-shaped) projection is formed on the outer peripheral surface of the end frame, the end frame is press-fitted into the yoke, the yoke and the end frame are held in the yoke radial direction, and after press-fitting, A notch is formed in the yoke, and a piece formed by the notch is bent to hold the yoke and the end frame in the longitudinal direction of the yoke. According to this example, since the yoke and the end frame can be held over a wide area with a small press-fitting area, the deformation of the yoke at the time of press-fitting, an increase in the press-fitting load, and strict dimensional control at the component level are unnecessary. It is possible to easily perform the assembling work.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a state in which a yoke and an end frame according to a first embodiment of the present invention are assembled.

FIG. 2 is a perspective view showing a state in which a yoke and an end frame according to a second embodiment of the present invention are assembled.

FIG. 3 is a perspective view showing a state in which a yoke and an end frame according to a third embodiment of the present invention are assembled.

FIG. 4 is a perspective view showing a state before assembling a yoke and an end frame according to a fourth embodiment of the present invention.

FIG. 5 is a perspective view showing a state where a yoke and an end frame according to a fourth embodiment of the present invention are assembled.

FIG. 6 is a perspective view showing a state in which a yoke and an end frame according to a fourth embodiment of the present invention are held.

FIG. 7 is an explanatory diagram showing a conventional example.

FIG. 8 is an explanatory diagram showing a conventional example.

FIG. 9 is an explanatory diagram showing a conventional example.

FIG. 10 is an explanatory diagram showing a conventional example.

FIG. 11 is an explanatory diagram showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Yoke 10a Opening of yoke 10b End face of opening of yoke 11 Engagement concave portion 12 Cutout in longitudinal direction 13 Cutout 14 Cutout in circumferential direction 15 Cutout 16 Cutout 20 End frame 20a Opening of yoke of end frame Covering surface 21 Engagement protrusion 22 Radial cut 23 Cut 24 Circumferential cut 25 Cut 26 Cut 27 Multiple protrusions A Longitudinal direction B Radial direction C Gap

Claims (5)

[Claims] 1. A yoke, and an end frame having a thickness disposed so as to cover an opening side of the yoke, wherein the yoke has a plurality of engagement recesses at an end on the opening side. The end frame is provided with a plurality of outwardly protruding engagement protrusions, and the motor in which the engagement recesses of the yoke and the engagement protrusions of the end frame are engaged, wherein the yoke is the engagement A cut portion is formed in the longitudinal direction of the yoke on at least one side of the concave portion, and at least a part of the cut portion formed by the cut portion is bent toward the engaging convex portion. The yoke is provided on the end side of the engaging convex portion of the end frame. A motor, wherein a cut portion is formed in a radial direction, and at least a part of a cut portion formed by the cut portion is bent toward the engagement concave portion, so that the yoke and the end frame are connected. 2. A yoke, and a thick end frame disposed to cover the opening side of the yoke, wherein the yoke has a plurality of engagement recesses at an end on the opening side. The end frame is provided with a plurality of outwardly protruding engagement protrusions, and the motor in which the engagement recesses of the yoke and the engagement protrusions of the end frame are engaged, wherein the yoke is the engagement A cut portion is formed in the longitudinal direction of the yoke on at least one side of the concave portion, and at least a part of the cut portion formed by the cut portion is bent toward the engaging convex portion. The yoke extends in the circumferential direction of the yoke at the end face of the opening. A notch is formed, and at least a part of the cut by the notch is bent toward the end frame so that an inner peripheral surface of the yoke and an outer peripheral surface of the end frame come into contact with each other. Motor, characterized in that combined with said end frame and said yoke. 3. A yoke, and a thick end frame disposed to cover the opening side of the yoke, wherein the yoke is provided with a plurality of engagement recesses at an end on the opening side. The end frame is provided with a plurality of outwardly protruding engagement protrusions, and the motor in which the engagement recesses of the yoke and the engagement protrusions of the end frame are engaged, wherein the yoke is the engagement A cut portion is formed in the longitudinal direction of the yoke on at least one side of the concave portion, and at least a part of a cut portion formed by the cut portion is bent toward the engaging convex portion. The end frame is formed on a surface covering the opening side of the yoke. A notch is formed in a circumferential direction of the yoke, and at least a part of the cut by the notch is bent toward the yoke, so that an inner peripheral surface of the yoke and an outer peripheral surface of the end frame are mutually connected. Brought into contact, the motor being characterized in that to couple the said yoke end frame. 4. A yoke, and a thick end frame disposed to cover the opening side of the yoke, wherein the yoke is provided with a plurality of engagement recesses at an end on the opening side. The end frame is provided with a plurality of outwardly protruding engagement protrusions, and the motor in which the engagement recesses of the yoke and the engagement protrusions of the end frame are engaged, wherein the yoke is the engagement A cut portion is formed in the longitudinal direction of the yoke on at least one side of the concave portion, and at least a part of the cut portion is bent toward the engaging convex portion, and a plurality of continuous convex portions are formed on the outer peripheral surface of the end frame. At least the distal end side of the convex portion is press-fitted into the yoke and crushed and assembled to bring the inner peripheral surface of the yoke and the outer peripheral surface of the end frame into contact with each other. Motor, characterized in that by combining the over arm. 5. A notch is formed in an end portion side of the engaging protrusion of the end frame in a radial direction of the yoke, and at least a part of a cut portion formed by the notch is bent toward the engaging recess of the yoke. 5. The motor according to claim 2, wherein the yoke and the end frame are connected.