JP2588204Y2 - motor - Google Patents

Description

[Detailed description of the invention]

[0001]

The present invention relates to a core having a plurality of salient poles at predetermined intervals, a coil wound around the core,
The present invention relates to a motor having a field magnet facing the core.

[0002]

2. Description of the Related Art Conventionally, for example, as shown in FIGS. 8A to 8C, a plurality of salient poles 1 are provided at predetermined intervals and a core 3 fixed to a shaft 2 and There is a motor 6 including an armature 60 having the wound coil 4 and a field magnet 5 facing the core 3.

The same number of terminals 7a as the number of salient poles 1 are provided at the upper end of the shaft 2.
Is fixed, and an insulating collar 8 for positioning the core 3 is fixed near the center of the shaft 2.

The starting end 4a of the coil 4 is connected and fixed to each terminal 7a of the commutator 7, and the end 4b of the coil 4 after winding is connected by soldering or the like in a state of being bundled together, as shown in FIG. This is a Y-shaped connection.

[0005]

[Problem to be Solved by the Invention] In the motor 6 configured as described above, there is a problem that cogging occurs due to the magnetic action between the core 3 and the magnet 5.

In order to reduce the cogging, it is effective to reduce the width w of the space formed by the adjacent salient poles 1 (see FIG. 8 (C)). As a result, the winding work of the coil 4 is hindered, so that sufficient cogging countermeasures cannot be taken.

The present invention has been made in view of the above circumstances, and has as its object to provide a motor which can reduce cogging without sacrificing the ease of coil winding work.

[0008]

Means for Solving the Problems The present invention, in order to achieve its objectives, the armature comprising a coil wound around the core and said core having a plurality of salient poles at predetermined intervals,
A motor that rotates one of the armature and the field magnet, comprising a field magnet opposed to the core, wherein the attached core body having a flange facing a space adjacent to the salient pole is provided. The gist is that the coil is disposed on an armature and the end of the coil is connected to the attached core body . Other ideas have similar structures.
In the motor, the coil is wound in front of the core.
It moves axially from one side of the salient pole, and the space adjacent to the salient pole
Attached to the inside with a flange made of electromagnetic steel
The gist is that a core body is arranged on the armature.
is there.

[0009]

In such a configuration, the space adjacent to the salient pole is narrowed by the juxtaposed core body having the flange facing the space adjacent to the salient pole. Therefore, to obtain the same effect as that narrowing the width w of the space, reducing the cogging is worn.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of a motor according to the present invention will be described with reference to FIGS.

(First Embodiment) FIGS. 1 to 4 show a first embodiment of a motor according to the present invention. FIG. 1 (A) is a front view of an armature of a motor before final assembly, and FIG. 1 (B). FIG . 1C is a front view of the motor in which a part of the final assembled state is broken, FIG . 1C is a plan view of the motor, FIG . 1D is a bottom view of the motor, and FIG .
2A is a plan view of the attached core body, FIG. 2B is a front view of the attached core body, FIG. 2C is an enlarged perspective view of the attached core body, and FIG.
4A is a connection diagram of the armature, FIG. 4A is a graph showing a cogging situation of the present invention, and FIG. 4B is a graph showing a conventional cogging situation.

In FIGS. 1A to 1D, the armature 1
0 denotes a commutator 12 fixed to one end of the shaft 11 and a shaft 1
1, a core 14 provided with a plurality of salient poles 13 at predetermined intervals (here, three equal points) and a coil 15 wound around each salient pole 13 of the core 14. , Core 1
4, a field magnet 16 opposed to the shaft 4, and an attached core body 18 fixed to the shaft 11 at a position lower than the shaft 11.

The attached core body 18 is shown in FIGS.
As shown in FIG. 1C, a cylindrical insulating collar 19 having a hole 17 into which the shaft 11 is press-fitted, and a core body 20 fixed to the outer periphery of the insulating collar 19 are provided.

The insulating collar 19 is formed of synthetic resin or the like, and regulates the position of the armature 10 in the thrust direction by pressing the shaft 11 into the hole 17.

The core body 20 is made of a relatively rigid electromagnetic steel material or the like, and has an annular base 22 having a fitting opening 21 into which the insulating collar 19 is fitted. A horizontal portion 23 radially protrudes from the position, and a flange 24 extending from an end of the horizontal portion 23 in a direction along the axis of the shaft 11.

A joint 25 is formed at the tip of the flange 24. The outer diameter of the flange 24 is set to substantially match the outer diameter of the salient pole 13 and to face the space formed by the adjacent salient pole 13.

On the other hand, as shown in FIG. 3, the winding start end 15a of the coil 15 is connected to the terminal 12a of the commutator 12,
The terminal portion 15b after the completion of the winding of the coil 15 is a Y-shaped connection connected to the joint portion 25.

In the above construction, first, the commutator 12 and the core 14 are fixed to the shaft 11 and the pre-integrated additional core body 18 is temporarily fixed to the shaft 11, and the winding start end 15a is joined to the terminal 12a. After that, the coil 15 is wound around each salient pole 13 of the core 14.

When the coil 15 is wound around the core 14, as shown in FIG. 1A, the attached core body 18 is located at a position where the winding operation of the coil 15 is not hindered.
As shown in (B), when the attached core body 18 is fixed at a predetermined position on the shaft 11, the end portion 15b is at a position that determines the length at which undesired sag does not occur. After the predetermined winding is completed, the terminal portion 15b is joined to the joining portion 25.

When the joining of the terminal portion 15b is completed,
The attached core body 18 is displaced from the temporarily fixed position in FIG. 1A to the fixed position in FIG. 1B so that each flange 24 faces the space formed by the adjacent salient poles 13.

As described above, the flange 24 faces the space formed by the adjacent salient poles 13 and the coil 15
Is connected to the connection portion 25 having high rigidity, the terminal portion 15b of the coil 15 comes into contact with a housing (not shown) due to vibration or the like due to rotation of the motor, and unnecessary noise is generated. In addition to preventing rotation failure due to dropping, a substantial reduction in space width can be realized, and cogging can be sufficiently reduced as shown in FIGS. 4 (A) and 4 (B). .

Further, since the connection work of the terminal portion 15b is facilitated while maintaining the ease of the winding work of the coil 15, the mechanization of the winding of the coil 15 can be realized, and a stable and inexpensive product can be supplied. can do.

(Second Embodiment) FIG. 5 shows a second embodiment of the motor according to the present invention. In the first embodiment, the core 20 is integrally formed. ,
As shown in FIG. 5A, the horizontal portion 33 and the flange 34,
And the joining portion 35 are integrally formed as a single piece in advance, and then a plurality of the joining portions 35 are formed on the base 32 or the base 32 as shown in FIG.
And an insulative collar portion 39 are integrally formed to form an attached core body 30 capable of coping with the number of poles to some extent.

(Third Embodiment) FIG. 6 shows a third embodiment of the motor according to the present invention, in which a base portion 42, a horizontal portion 43, and a flange 4 are provided.
4, after separately forming the joint 45 advance together, and forming a hotel core member 40 by engaging the plurality by irregularities.

In each of the above embodiments, the joints 25, 35, 45 are provided at the tips of the flanges 24, 34, 44, respectively.
However, the present invention is not limited to the above embodiments, such as forming at the base end portions of 4, 44.

(Fourth Embodiment) FIG. 7 shows a fourth embodiment of the motor according to the present invention, in which an annular base 52 and a flange 54 are combined.
The core body 50 is formed. Attached core body 50
Is fixed to the core 13 in an insulated state by, for example, an insulating adhesive or the like, instead of being fixed to the shaft. Coil 15
Is wound on the winding device and fixed at a predetermined position of the core 13 after the end connection. Thus, the attached core body 5
The arrangement of the zeros on the armature 10 may be performed by another method as long as it is performed in an electrically insulated state with respect to the core 13.

By the way, the end portions 1 of the plurality of coils 15
5b may be joined together to one flange 24,34,44,54. In addition, the attached core bodies 20, 30, 4
It is also possible to apply a plating process to the surface of the 0,50 to facilitate connection of the coil 15. The motor of the present invention has one or more salient poles, and is not particularly limited, such as a brushless motor or a face-to-face motor, and the flanges 24, 34 , and 44 are provided in all spaces. ,
You don't even need to see 54 .

[0028]

[Effects of the Invention] As described above, in the motor of the present invention, the armature is provided with the attached core body having the flange facing the space adjacent to the salient pole, and the coil wound around the core.
By connecting the end of the
Simplifies the work of connecting the coil ends while reducing
Can be planned. Also, in other invented motors
Is in the axial direction from one side of the salient pole of the core around which the coil is wound.
To move into the space adjacent to the salient poles, and
That the armature has an attached core body with a flange
Without sacrificing the ease of coil winding work
A large reduction in cogging can be realized.

[Brief description of the drawings]

1 shows a motor of the present invention, (A) is a front view of an armature of a motor before final assembly, (B) is a front view of a motor in which a part of a final assembly state is cut, and (C) is a motor.
Plan view of, (D) is a bottom view of the motor.

FIG. 2 shows an attached core body of the motor of the present invention;
Is a plan view of the attached core body, (B) is a front view of the attached core body,
(C) is an enlarged perspective view of the attached core body.

FIG. 3 is a connection diagram of the armature of the motor of the present invention.

4A and 4B are diagrams illustrating a cogging state of a motor , wherein FIG. 4A is a graph illustrating a cogging state of a motor according to the present invention , and FIG. 4B is a graph illustrating a cogging state of a conventional motor .

FIG. 5 shows a second embodiment of the motor of the present invention, and (A)
2 is a plan view of a single core body, and FIG. 2B is a plan view of an attached core body.

FIG. 6 is a plan view showing a third embodiment of the motor according to the present invention, and showing an attached core body.

7 shows a fourth embodiment of the present invention the motor is a perspective view of the hotel's co <br/> A body.

8 shows a conventional motor, (A) is a front view of a motor with a partially cutaway state assembled, (B) the motor Rights
FIG. 3C is a bottom view of the motor .

FIG. 9 is a connection diagram of an armature of a conventional motor .

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 ... Armature 11 ... Shaft 13 ... Salient pole 14 ... Core 15 ... Coil 16 ... Field magnet 18 ... Attached core body 24 ... Flange

──────────────────────────────────────────────────続 き Continued on the front page (58) Fields surveyed (Int. Cl. ⁶ , DB name) H02K 23/00 H02K 23/04 H02K 3/52

Claims (3)

(57) [Scope of request for utility model registration] An armature including a core having a plurality of salient poles at predetermined intervals and a coil wound around the core;
A motor having a field magnet facing the core and rotating one of the armature and the field magnet, wherein the attached core body having a flange facing a space adjacent to the salient pole is provided. It is arranged on the armature and the end of the coil is
A motor characterized by being connected to a core body . 2. A coaxial cable having a plurality of salient poles at predetermined intervals.
And an armature comprising: a coil wound around the core;
And a field magnet facing the core.
One of the armature and the field magnet
In the motor for rotating the shaft, the shaft from one side of the salient pole of the core around which the coil is wound
In the space adjacent to the salient poles
Attached core body with flange made of material
A motor characterized by being arranged . 3. The electrical connection between the core and the attached core body.
3. The device according to claim 1, wherein the device is insulated.
Motor.