JPH03143254A - Motor - Google Patents

Abstract

PURPOSE:To facilitate the coiling of winding to the projection of an armature core so as to improve motor manufacturing efficiency by coiling the windings of the same phase in the same direction, at the winding core projections on both sides of a unwinding core projection where winding is not applied. CONSTITUTION:A rotor 2 is provided freely in roration to an armature 3, in a body with a rotor 3 piercing to the inside of an armature 1. The armature 1 consists mainly of an armature core C and windings L1-L6. In core projections Ce1-Ce9, nonwinding core projections Ce1, Ce4, and Ce7, where winding is not applied, are arranged two projections apart. When currents are applied to the windings L6 and L1, magnetic circuit are made between winding core projections Ce9 and Ce2, a core pole part C6, permanent magnets M8, M1 and M2 and a rotor york Y, and a nonwinding core projection Ce1 and a cole pole Cp1, and counterclockwise torque works on the rotor 2, and a motor is driven.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a motor equipped with an armature in which windings are wound around protrusions arranged in an annular arrangement on an armature core.

[Prior Art] Conventionally, among motors having an armature in which windings are wound around protrusions arranged in an annular arrangement in an armature core, and a field means provided to be rotatable relative to the armature, By winding in-phase windings around a series of three protrusions in the armature core so that their polarities alternate, the tips of those protrusions become magnetic poles whose polarity is simultaneously changed, and so on. In other words, a motor is known which includes an armature configured such that the polarity of the magnetic poles on both sides is opposite to the polarity of the central magnetic pole. For example, JP-A-63-129840 and JP-A-63-294
This type of motor is disclosed in No. 243, etc.6.

[Problems to be Solved by the Invention] However, in this type of motor, the above three protrusions are wound with in-phase windings so that the polarities are alternated, that is, alternately wound in opposite directions. If adjacent windings of the same phase are wound at the same time, they tend to interfere with each other's winding, which is particularly difficult when winding is performed using a winding machine.

The present invention has been made in view of the above-mentioned problems existing in the prior art, and provides a structure in which winding of the winding around the protrusion of the armature core is easy and motor manufacturing efficiency can be increased. The purpose is to provide motors for

[Means for Solving the Problems] In order to achieve the above object, the motor of the present invention has a core protrusion disposed in an annular shape at the core base, and a core pole portion at the tip end of the core protrusion. In the motor, the core protrusion includes two winding core protrusions and one blank. The winding core protrusions are arranged alternately, and the winding core protrusions on both sides of the non-winding core protrusion have windings of the same phase wound in the same direction.

It is desirable that the circumferential interval between the adjacent winding core protrusions is wider than the circumferential interval between the winding core protrusion and the adjacent non-winding core protrusion.

Further, it is desirable that the circumferential width of the non-wound core protrusion is wider than the circumferential width of the wire-wound core protrusion.

Further, the circumferential width of the non-winding core protrusion is made substantially the same as the circumferential width of the winding core protrusion, and the center angle of the radial center line of the adjacent winding core protrusion is set to the width of the winding core protrusion. It can also be made larger than the center angle of the radial center cotton of the adjacent unnecessary cotton core protrusion.

In addition, the circumferential length of the core pole part in the winding core protrusion is
The length in the circumferential direction of the core pole part of the non-wound core protrusion is made longer than the circumferential length of the core pole part, so that the protruding end of the non-wound core protrusion is longer than the circumferential center of the core pole part of the non-wound core protrusion adjacent to the non-wound core protrusion. It can also be connected to the side.

[Function] Since windings of the same phase are wound in the same direction on the wire-wound core protrusions on both sides of the non-winding core protrusion, magnetic flux of the same polarity is generated by energization, and these core poles The magnetic poles are of the same polarity.

A magnetic circuit is formed between the winding core protrusions on both sides of the non-winding core protrusion, their core poles, core bases and field means, and the non-winding core protrusion and the core pole. Therefore, when magnetic poles of the same polarity are generated in the winding core protrusions on both sides, the core pole portion of the non-wound core protrusion becomes magnetized to the opposite polarity substantially at the same time.

Since commutation occurs simultaneously in the windings of the winding core protrusions on both sides of the unnecessary cotton core protrusion, when the polarity of the core pole of the winding core protrusion changes, substantially simultaneously The polarity of the core poles of the cotton core protrusions is also reversed, and the core poles of the non-wound core protrusions have opposite polarities to the core poles of the wire-wound core protrusions on both sides thereof.

In the armature, groups consisting of a non-winding core protrusion and wire-wound core protrusions on both sides are arranged in an annular manner, and the above-described operation is performed in the same manner for each of the groups.

Furthermore, if the circumferential spacing between adjacent winding core protrusions is wider than the circumferential spacing between a winding core protrusion and its adjacent non-winding core protrusion, winding may be difficult. The gap between the winding wire and the non-wound core protrusion is reciprocally reduced, or at the same time, the amount of winding that can be wound around the wire-wound core protrusion is relatively increased. can do.

If the circumferential width of the non-wound core protrusion is made wider than the circumferential width of the wire-wound core protrusion, then if the center angles between the radial center lines of adjacent core protrusions are the same, Also, the circumferential interval between adjacent winding core protrusions is wider than the circumferential interval between a winding core protrusion and the adjacent non-winding core protrusion.

Also, with this configuration, in the non-winding core protrusion,
Magnetic resistance is relatively reduced.

Further, the circumferential width of the non-winding core protrusion is configured to be substantially the same as the circumferential width of the winding core protrusion, and the center between the radial center lines of each of the adjacent winding core protrusions is The circumferential spacing between adjacent winding core protrusions can also be increased by making the angle larger than the center angle between the radial center lines of the winding core protrusion and the adjacent non-winding core protrusion. is wider than the circumferential distance between the winding core protrusion and the adjacent non-winding core protrusion.

[Example] Next, an example of the present invention will be described with reference to FIGS. 1 to 3.

FIG. 1 is a schematic diagram of an outer rotor type three-phase eight-pole motor, where 1 is an armature that constitutes a stator, and 2 is a field means that constitutes a rotor. The field means 2 (rotor) is integrated with a rotating shaft 3 passing through the inside of the armature 1, and is rotatably provided with respect to the armature 1 (stator).

Armature l mainly consists of armature core C and windings LIL2, L
3, L4, L5 and L6.

The armature core C is made by laminating insulating plates made of ferromagnetic material. The shape of the armature core C in a plane perpendicular to the axial direction is as shown in FIG.
l to C, e9 are arranged in an annular shape, and the core protrusion Cel
Core pole parts Cpl to C are provided at the tip ends of Ce9, respectively.
p9. Core protrusion Cel to C
e9 is disposed such that its radial center line is sandwiched between substantially equal central angles of 40 degrees with the adjacent core protrusions.

The core pole parts Cpl to Cp9 are provided so that the protruding ends of the core protrusions Cel to Ce9 are located at the center in the circumferential direction, and all the core pole parts cpt to Cp9 are located on the same annular part. The circumferential length, circumferential spacing, and radial width thereof are substantially equal.

Among the nine core protrusions Cel to Ce9, every second core protrusion has a non-winding core protrusion Cel, Ce9 where no winding is wound.
4 and Ce7 are arranged. Therefore, two winding core protrusions around which one winding is wound and one non-winding core protrusion are arranged alternately. Non-winding core protrusion Cel, Ce4
and winding core protrusions Ce9 and Ce7 on each side of Ce7.
2. Ce3-Ce5 and Ce6-Ce8 are wound so that the in-phase windings L6 and Ll, L2 and L3, and L4 and L5 are wound in the same direction, so that the core poles of each have the same type of polarity at the same time. has been done.

These three pairs of windings L6/Ll, L2/L3 and L4/
L5 are connected to each constitute one of the three phases.

The circumferential widths of the winding core protrusions Ce2, Ce3, Ce5, Ce6Ce8, and Ce9 are approximately the same width in the radial direction, but the non-winding core protrusion Cel.

The circumferential widths of Ce4 and Ce7 gradually decrease toward the radial center. And the non-winding core protrusions Cel, Ce
The circumferential widths of winding core protrusions Ce2 and Ce7 are
3, Ce5, Ce6, Ce8, and Ce9. As a result, the circumferential spacing between adjacent winding core protrusions is wider than the circumferential spacing between a single winding core protrusion and the adjacent non-winding core protrusion, and the wound Lines L6・LL, L2・L3 and L4
- The gap between L5 and the non-winding core protrusions Cel, Ce4, and Ce7 is relatively reduced. In addition, the non-winding core protrusion C
e1. In Ce4 and Ce7, the magnetic resistance is relatively reduced.

The field means is made up of eight radially magnetized permanent magnets M1 to M8 arranged with alternate polarity on the inner peripheral surface of an annular rotor yoke Y. Each permanent magnet M1 to M8
are arranged on the same annular portion, and have substantially the same circumferential length and radial width.

Therefore, each permanent magnet M1 to M8 occupies a central angle of 45 degrees. The inner peripheral surface of each permanent magnet M1 to M8 and the outer peripheral surface of each core pole portion Cp1 to Cp9 face each other with a radial gap in between.

Incidentally, if a commutator or the like is used, the field means may constitute the stator, and the armature may constitute the rotor. Further, the field means can also be constituted by an electromagnet or the like.

In the above configuration, when current is passed through the windings L6 and Ll, magnetic flux of the same polarity is generated in the winding core protrusions Ce9 and Ce2 on both sides of the non-winding core protrusion Cel, and these core poles are Parts Cp9 and Cp2 have the same polarity (for example, S pole)
becomes the magnetic pole of Winding core protrusions Ce9 and Ce2 on both sides of the non-winding core protrusion Cel, and their core pole parts Cp.
9 and Cp2, core base cb, permanent magnets M8, Ml, and M2, and rotor yoke Y, and the non-winding core 1 protrusion Cel and its core pole Cpl. The core pole portion Cpl in the wire core protrusion Ce1 is connected to the winding core protrusions Ce9 and C on both sides thereof.
substantially simultaneously with the core pole parts Cp9 and Cp2 in e2, magnetized to the opposite polarity (for example, N pole) 6 Therefore, in the case of the polarity illustrated above, in the state shown in FIG. 1, the field means A counterclockwise rotational force acts on 2 (rotor).

When commutation occurs in these windings L6 and Ll, the polarity of these core pole portions Cp9 and Cp2 changes, for example, from the S pole to the N pole.
Become the pole. ), and in conjunction with this, the polarity of the core pole portion Cpl also changes substantially at the same time (for example, from N pole to S pole).

The core pole portion Cpl of the non-wound core protrusion Cel also has a reverse polarity with respect to the winding core pole portions Cp9 and Cp2 on both sides thereof.

Then, three pairs of windings L6, LL, L2, L3, and L4,
Sequential commutation is caused in each of L5 using three-phase variable current, or direct current is used and commutation is caused sequentially at appropriate timing using a commutator or switching element, etc. In this way, the motor is driven.

FIG. 2 is a schematic diagram of a 120 degree central angle portion of the armature 1 in another embodiment, and the armature 1 has the same shape at every 120 degrees around the central axis. It is something that can be done. FIG. 3 is a schematic diagram of a 120 degree central angle part of the armature 1 in yet another embodiment. The shape of is displayed.

In the embodiment shown in FIG. 2, the non-winding core protrusion C
The circumferential width of el is substantially the same as the circumferential width of the winding core protrusions Ce9 and Ce2, and the second winding core protrusions Ce9 and Ce
The circumferential length of the core pole parts Cp9 and Cp2 in 2 is
It is configured to be longer than the circumferential length of the core pole portion Cpl in the non-winding core protrusion Ce1. Core pole part Cp1. Cp
2...The radial width of Cp9 and the interval between each core pole portion are all equal. The central angle θ1 between the radial center lines of each of the adjacent winding core protrusions is about 54 degrees, and the central angle θ1 between the radial center lines of each of the adjacent winding core protrusions is approximately 54 degrees, and the winding core protrusions Ce9 and Ce2 and the non-winding core protrusion C next thereto are approximately 54 degrees.
The central angle θ2 between the radial center line at el is approximately 33
degree. The protruding end of the non-winding core protrusion Cel is located at the circumferential center of the core pole Cpl, while the protruding ends of the winding core protrusions Ce9 and Ce2 are located at the center of the core pole Cp9.
and a non-winding core protrusion C slightly more than the circumferential center of Cp2
It is located on the el side. Similarly to the embodiment shown in FIG. 1, windings L6 and Ll of the same phase are wound in the same direction around the winding core protrusions Ce9 and Ce2, respectively.

In the embodiment shown in FIG. 3, the non-winding core protrusion C
The circumferential width of el is substantially the same as the circumferential width of the winding core protrusions Ce9 and Ce2, and all the core pole parts Cpl, Cp
2...Cp9 are configured to have substantially equal lengths and equal intervals in the circumferential direction and equal widths in the radial direction. The central angle θ1 between the radial center lines of each of the adjacent winding core protrusions is approximately 44
The central angle θ2 between the radial center lines of the winding core protrusions Ce9 and Ce2 and the adjacent non-winding core protrusion Cel is about 38 degrees. The tip of the non-winding core protrusion Cel is located at the circumferential center of the core pole Cp1, but the tip of the wire-wound core protrusions Ce9 and Ce2 are located at the center of the core pole Cp9 and Cp2. It is located slightly closer to the non-winding core protrusion Cel than the circumferential center. Similar to the embodiments shown in FIGS. 1 and 2, the windings L6 and Ll of the same phase are wound in the same direction around the winding core protrusions Ce9 and Ce2, respectively.

In both the embodiment shown in FIG. 2 and the embodiment shown in FIG.
The circumferential interval between adjacent winding core projections is such that the winding core projections Ce9 and Ce2 and the non-winding core projection C next thereto are
The gap between the wound wire 6.LL and the non-winding core protrusion Cel becomes wider than the circumferential gap between the coil and the winding core protrusion Ce9. and Ce2
The amount of winding that can be wound can be relatively increased.

Then, due to the influence of the windings L6 and Ll, the winding core protrusions Ce9 and Ce are connected to the core pole part Cpl of the non-winding core protrusion Cel.
2 core pole part Cp9 and Cp2 and 5. Winding L6 and 5 within the range where the same polarity does not appear.
When winding Ll, the winding core protrusions Ce9 and Ce
In the embodiment shown in FIG. 2, in which the circumferential length of the core pole parts Cp9 and Cp2 is longer, the amount of windings L6 and Ll can be increased compared to the embodiment shown in FIG. can.

[Effects of the Invention] In the motor according to claim 1, windings of the same phase are wound in the same direction around the winding core projections on both sides of the non-winding core projection. When a magnetic pole of the same polarity is generated in the core pole of the protrusion, the core pole of the non-wound core protrusion is magnetized to the opposite polarity, and as a result, the non-wound core protrusion and the windings on both sides thereof are magnetized. Substantially simultaneous switching of the polarities of the three core pole parts in the wire core protrusion, and the opposite polarity of the core pole parts of the non-wound core protrusion with respect to the core pole parts of the wire-wound core protrusion on both sides thereof are realized. Ru. Therefore, there is no need to wind the winding around -3 of the core protrusions of all the core protrusions in the armature core, and both sides sandwiching the unwound core protrusions where no winding is applied. Since windings of the same phase can be wound in the same direction on the core protrusion of 6, simultaneous winding including winding on a winding machine is easy, which contributes to increased manufacturing efficiency. There is a lot to do.

In the motor of claim 2, the gap between the wound winding and the non-wound core protrusion is relatively reduced, or at the same time, the gap between the wound wire and the non-wound core protrusion is reduced, or at the same time, the gap between the wound wire and the non-wound core protrusion is reduced. Since the amount can be relatively increased, it greatly contributes to an increase in output.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram of one embodiment of the motor of the present invention, FIG. 2 is a schematic diagram of the main part of the armature in another embodiment of the motor of the present invention, and FIG. 3 is a schematic diagram of another embodiment of the motor of the present invention. It is a schematic diagram about the principal part of the armature in another Example. In the drawings, 1 is an armature, 2 is a field means, C is an armature core,
cb is the core base, Cel to Ce9 are the core protrusions, Cpl
Cp9 to Cp9 are core pole parts, and Ll to L6 are windings. Diagram

Claims (1)

[Claims] 1. An armature including an armature core having a core protrusion disposed in an annular manner at the core base and a core pole portion at the tip end of the core protrusion, and the armature. In the motor, the core protrusion includes two wire-wound core protrusions and one non-wound core protrusion arranged alternately, A motor characterized in that the winding core protrusions on both sides of the wire core protrusion have windings of the same phase wound in the same direction. 2. The method according to claim 1, wherein the circumferential interval between adjacent winding core protrusions is wider than the circumferential interval between a winding core protrusion and an adjacent non-winding core protrusion. motor. 3. The motor according to claim 2, wherein the circumferential width of the non-wound core protrusion is wider than the circumferential width of the wire-wound core protrusion. 4. The circumferential width of the non-winding core protrusion is substantially the same as the circumferential width of the winding core protrusion, and the center angle of the radial center line of adjacent winding core protrusions is 3. The motor according to claim 2, wherein the center angle is larger than the center angle between the radial center line of the non-wound core protrusion and the adjacent non-wound core protrusion. 5. The circumferential length of the core pole part in the winding core protrusion is configured to be longer than the circumferential length of the core pole part in the non-winding core protrusion, and the protruding end of the winding core protrusion is 5. The motor according to claim 4, wherein the motor is connected to the adjacent non-winding core protrusion side rather than the circumferential center of the core pole portion.