JPS59139845A - Superposition type commutator motor with unsuperposed armature coil group - Google Patents

Abstract

PURPOSE:To obtain strong rotary torque and to enable to inexpensively manufacture in a mass production by winding many turn conductors on an annular member to contribute to torque generation in a toroidal shape, thereby forming a rotor. CONSTITUTION:Armature coils 3'-1, 3'-3, 3'-6 are disposed at an equal interval on an annular member 15 formed of a magnetic material so as not to be superposed to each other, and armature coils 3'-2, 3'-4, 3'-6 are disposed to be superposed to each other by displacing the phase in a circumferential direction so that conductor units 3'-2a, 3'-3b, 3'-4a, 3'-4b, 3'-6a, 3'-6b are not superposed with conductor units 3'-1a, 3'-1b, 3'-3a, 3'-3b, 3'-5a, 3'-5b which contribute to the torque generation of armature coils 3'-1, 3'-3, 3'-6, thereby forming a rotor 2'. This rotor 2' is arranged in opposed manner to a stator having a field magnet.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is arranged so that the opening angle of the two conductor parts contributing to the generated torque is approximately 2n-1 (n is a positive integer of 1 or more) times the magnetic pole width of the field magnet. This invention relates to a commutator motor whose rotor is an armature made up of a group of armature coils.

As this type of motor, a four-pole, six-coil disk-type commutator motor is conventionally known. This motor (not shown) has a four-pole annular field magnet having N and S magnetic poles alternately fixed on the inner fixed side of the main body, and is opposite to the field magnet 1. Two armatures shown in FIG. 1 are provided, and the two armatures serve as a rotor.

This armature 2 includes six armature coils 3-1°...
, 3 to 6 layers are arranged at equal intervals, and then plastic molded to form a disk shape. Each armature coil 3-1
．． ..., 3-6, the opening angle width of the conductor parts 3a and 3b contributing to the generated torque in the radial direction is approximately equal to the magnetic pole width of the field magnet 1, that is, the opening angle width of 90 degrees. It is wound into a fan frame shape. Armature coil 3-11...
, 3-6 in the circumferential direction are conductor portions that do not contribute to the generated torque. Since there are conductor parts 3c and 3d that do not contribute to this generated torque, each armature coil 3-1°
. . , 3-6 have the disadvantage that they are doubled, and as a result, the field air gear increases and strong rotational torque cannot be obtained. 1 armature coil 3-1.
..., depending on the arrangement method of 3-6, in order to make the armature 2 flat, it is necessary to completely deform the upper armature coil 3 as shown in Fig. 2. However, the armature 2 has the disadvantage that it cannot be mass-produced at low cost. Also, armature coil 3-1. ..., 3-6 have the same amount of conductor portions 3c and 3d that do not contribute to the generated torque as the conductor portions 3a and 3b that contribute to the generated torque, so the armature 2 has the disadvantage that it is very expensive. That is, since the cost of the N-mode coil 3 is closely proportional to the weight of the copper wire forming this N2, the conductor portions 3c and 3d that do not contribute to the generated torque are
A i/f is almost gone.

The manufacturing cost of the armature coil 3 is halved. Further, the armature 2 has a fan frame-shaped armature coil 3-
1. ..., 3-6 pieces have to be arranged as shown in Fig. 1 and then plastic molded, which lacks speed in mass production, resulting in an expensive armature 2. .

FIG. 3 is a developed view of the field magnet 1 and armature 2 in the disk type commutator motor having the armature 2 shown in FIG. As is clear from this developed diagram, each armature coil 3-1. - γV3-6 are arranged at equal intervals, and the conductor portions 3c and 3d that do not contribute to each n1 generated torque are overlapped. 4 is a commutator, commutator pieces 4-1. ..., consisting of 4-6.

Reference numerals 5-1 and 5-2 are brushes, and now the brush 5-1 is in sliding contact with the commutator piece 4-2, and the brush 5-2 is in sliding contact with the commutator piece 4-5. Reference numerals 6-1 and 6-2 denote a positive power terminal and a negative power terminal, respectively, which are connected to the brushes 5-1 and 5-2. One terminal of armature coil 3-111D and the other terminal of 3-6 are connected to commutator piece 4-IK, 3-
The other terminal of 1 and one terminal of 3-2 are commutator piece 4-2.
f'L, the other terminal of 3-2 and one terminal of 3-3 are connected to commutator piece 4-3, the other terminal of 3-3 and one terminal of 3-4 The terminal is connected to commutator piece 4-4, the other terminal of 3-4 and one terminal of 3-5 are connected to commutator piece 4-5, the other terminal of 3-5 and 3 -6
One terminal of is connected to the commutator bar 4-6.

Such conventional disk type commutator motors have the above-mentioned drawbacks.

The present invention has been made to solve all of the above-mentioned drawbacks, and even if the armature coil groups are arranged so as to overlap each other as in the past and the armature is entirely formed, the armature coil groups will not overlap. To obtain an armature that can fully form the armature, eliminate the increase in the field air gap, and generate a strong rotational torque in its entirety, and eliminate conductors mk that do not contribute to the generated torque as much as possible and quickly. The entire purpose of the N7C was to obtain a commutator motor with a low cost and high performance armature tray that could be mass-produced.

It is an object of the present invention that the opening angle of the two conductor parts contributing to the generated torque is approximately 2'n = 1 of the magnetic pole width of the field magnet.
(n is a positive integer greater than or equal to 1) Double winding formation δn In a commutator motor with an armature full rotor consisting of a group of armature coils, a multi-turn conductor is entirely toroidally wound around an annular member. A first conductor part that contributes to torque is formed, and from the second conductor part approximately 2n-1 of the magnetic pole width of the field magnet is formed.
(n is a positive integer greater than or equal to 1) times the opening angle width at the annular member position separated in the circumferential direction by a multi-turn conductor wound in a toroidal shape and contributing to the generated torque. fully formed and fully connected with the first conductor part and the second conductor part.
Form the armature coil.

A first armature coil that contributes to the total generated torque of two or more armature coils;
The armature is entirely formed by arranging the second conductor part in a superimposed manner with the phases shifted in the circumferential direction so as not to overlap with each other, and this n' is used as a rotor. Two field magnet trays of 2p (p is a positive integer of 2 or more) poles having all alternating magnetic poles, with the same poles facing each other, are provided on both fixed sides of the armature, respectively, to form a stator. This is achieved by providing a superimposed type commutator motor in which the armature coil groups do not overlap on the stator side and have all stages of brushes in sliding contact with the commutator.

An embodiment of the present invention will be described below with reference to all of FIGS. 4 to 8.

4 and 5, 7 is a disc-type commutator motor as an embodiment of the present invention, 8 is a disc-type commutator motor main body, and a cup body 8-1 is formed of a mild steel plate and has a sawn shape. .8
-2 is formed by fitting flanges 8-1a and 8-2a formed at the opening end and fixing them with a shaft 9. 1'-1,
1'-2 is an annular four-pole field magnet f17c fixed to the inner surface of the n-cup body 8-1, 8-2; 13 is a field magnet 1'-
In the attached brush holder, brushes 5-1, 5-2, which are in sliding contact with the commutator 4, are fixed to the other ends of the brush holders 14 and 14'. The commutator 4 and the disk-shaped armature 2' are fixed coaxially to the rotating shaft 10 and integrated into a rotor. It consists of The armature 2' is formed by winding a multi-turn conductive wire in a ketoroidal shape around an annular member 15 made of a magnetic material.

The armature 2' of the present invention will be explained with reference to FIGS. 6 and 7.

As shown in FIG.
The conductor parts 3'a, 3'b (3'
-1a, -, 3'-6a, 3' -1b, -, 3
'-6b) and conductor portion 3'c that does not contribute to the generated torque
, 3'd are arranged so that they do not overlap each other. To completely form the armature 2' shown in FIG. 6, the method shown in FIG. 7 may be used. Now armature coil 3'-1 and 3
′-2 will be explained with reference to FIG. 7. First conductor portion 3′-1a′ (I
l-form. One terminal 16 of the conductor portion 3'-1a is connected to the commutator bar 4-1 as shown in FIG.

The other terminal 17 of the first conductor part 3'-1a is connected to the field magneto)1'-1,1 from the position of the conductor part 3'-1a.
'-2 opening angle width, that is, opening angle width of 90 degrees in the circumferential direction f
'L is led to the elliptical annular member 15 position fLl At that position, the second conductor part 3' winds the multi-turn conductor in a toroidal shape in the opposite direction to the first conductor part 3'-1a and contributes to the generated torque. -1b, one armature coil 3'-1'i is formed. The terminal 18 of the second conductor portion 3'-1b is connected to the commutator bar 4-2. After that, the armature coil 3' is wound by a winding machine.
The second conductor @3'-1b, which contributes to the generated torque, is wound around the annular member 15 at 30 degrees in the circumferential direction in front of the first conductor, which contributes to the generated torque. A conductor portion 3'-2a is formed. One terminal 18 of the first conductor portion 3'-2a is connected to the commutator piece 4-2.

Further in the circumferential direction from the first conductor portion 3'-2a position by the opening angle width of the field magnets 1'-1 and 1'-2, that is, the opening angle width of 90 degrees, n'11 circular ring shape. Multiple turns conductor in the opposite direction to member 1 trap body 3'-2a? A second conductor i3' that is wound in a toroidal shape and contributes to the generated torque
-2b, and the first and second conductor parts 3'-2a
, 3'-2b form armature coils 3/, -2'. The terminal 21 of the second conductor portion 3'-2b is connected to the commutator piece 4-3. By carrying out such operations for all the armature coils 3'-3, . . . , 3'-6, the armature 2' shown in FIG. 6 can be formed easily and quickly using a winding machine. Referring to FIG. 6, one terminal 22 of the first conductor portion 3'-3a of the armature coil 3'-3 is connected to the commutator piece 4-3K.

The other terminal 23 is connected to the second conductor section 3'-3b, and the other terminal 24 of the second conductor section 3'-3b is connected to the commutator bar 4-4 (see FIG. 8). same as below).

One terminal 25 of the first conductor part 3'-4a of the armature coil 3'-4 is connected to the commutator piece 4-4, and the other terminal 26 is connected to the second conductor part 3'-4bK, The other terminal 27 of the conductor portion 3'-4b is connected to the commutator bar 4-5. One terminal 28 of the first conductor section 3'-5a of the armature coil 3'-5 is connected to the commutator bar 4-5, and the other terminal 29 is connected to the second conductor section 3'-5b. The other terminal 30 of the conductor portion 3'-5b is connected to the commutator bar 4-6. One terminal 3 of the first conductor portion 3'-6a of the armature coil 3'-6
1 is connected to the commutator piece 4-6, and the other terminal 32 is connected to the second conductor section 3.
'-6b, the other terminal 3 of the second conductor portion 3'-6b
3 is connected to the commutator bar -.

As is clear from FIG. 8, armature coil 3'-1,
3'-3, 3'-6 are arranged at regular intervals so as not to overlap each other, and the armature coils 3'-2, 3'-4, 3'-
6 is a conductor portion 3'-2a that contributes to this generated torque;
3'-2b, 3'-4a, 3'-4b, 3'-
6a, 3'-6b are the armature coils 3'-1, 3'-
Conductor portion 3'-1a that contributes to the generated torque of 3, 3'-6
, 3'-1b, 3'-3a, 3'-3b, '3'
-5a.

The armature 2' as shown in FIG. 5.6 is formed by arranging the armatures 3'-5b in a superimposed manner so as not to overlap each other, with the phases completely shifted in the circumferential direction.

The armature 2' is molded entirely in plastic and attached to the rotating shaft 1.
0 and can be integrated to form the entire rotor shown in FIG.

In the above embodiment, the four-pole field magnet 1'-1,
Although a 1'-2 tray is used, a 2p (p is a positive integer of 3 or more) pole tray may also be used, and the armature coil 3' is connected to the first and second conductor portions 3' that contact the generated torque. a, 3'b opening angle width full field magnet) 1'-1.

Although the opening angle width is approximately equal to the pole width of 1'-20i, the first conductor portion 3' contributes to the torque generated by the armature coil 3'.
The opening angle width between a and 3'b is set using the field magnet 11-1.1.
'-2 magnetic pole width approximately 2n-1 (n is a positive integer greater than or equal to 2)
It may be wound to have double the opening angle width.Furthermore, although the above example describes a disk type commutator motor, the present invention can also be applied to a cylindrical commutator motor. be.

It goes without saying that the gist of the present invention can also be applied to the vB pole of the field magnet or the conductor portions contributing to the torque generated by the armature coil, all of which are skewed.

The present invention has the above configuration, and when a current rectified by a commutator is passed through the armature coil, the rotor of the armature is rotated in a predetermined direction according to Fleming's left-hand rule. Become.

As is clear from the above, the present invention is configured, so
This has the effect of easily achieving the purpose stated at the beginning.

[Brief explanation of the drawing]

FIG. 1 is a plan view of a conventionally known armature, FIG. 2 is an explanatory diagram for explaining the overlapping state of the armature coils, and FIG. 3 is a developed view of the field magnet and the armature. 4 is a vertical sectional view of a commutator motor as an embodiment of the present invention, FIG. 5 is an exploded view of FIG. 4, FIG. 6 is a perspective view of the armature of FIG. 4, and FIG. FIG. 6 is an explanatory diagram of the method of forming the armature, and FIG. 8 is a developed view of the field magnet and the armature. 1.1'... Field magnet, 2.2'... Armature, 3-11..., 3-6.3'-1,..., 3'-
6... Armature coil, 3a, 3'a, 3b, 3
'b-Conductor portion contributing to generated torque, 3c, 3'c
, 3d, 3'd...conductor portions that do not contribute to the generated torque,
4... Commutator, 4-1. ...14-6...Commutator piece, 5-1.5-2...Brush, 6-
1...Positive power terminal, 6-2...Minus power terminal, 7...Disk type commutator motor, 8...
・Disc type commutator motor body. 3-1.8-2...Cup body, 8-1a, 8-2
a... Tsuba, 9... Axis, 10... Rotating axis,
11゜12...Bearing, 13...Plastic ring, 14.14'...Brush holder, 15.
... Annular member, 16, ..., 33i ... terminal. For patent, applicant 0)

Claims (1)

[Claims] 1. An n7ic electric machine in which the opening angle of the two conductor parts contributing to the generated torque is approximately 2n-1 (n is a positive integer of 1 or more) times the magnetic pole width of the field magnet. In a commutator motor in which a child coil group is a second armature and a full rotor, a multi-turn conducting wire is wound around an annular member in a toroidal shape to form the entire first conductor portion that contributes to the generated torque, and Separate from the conductor part in the circumferential direction by an opening angle width approximately 2n-1 (n is a positive integer of 1 or more) times the magnetic pole width of the field magnet. The armature is constructed by forming all the armature coils, and arranging the first and second conductor parts, which contribute to the total generated torque, in a superimposed manner with their phases shifted in the circumferential direction so that they do not overlap with each other. form,
This is f′L full rotor, the rotor has full commutator role, N,
Two field magnets of 2p (p is a positive integer of 2 or more) poles having S magnetic poles alternately are installed on both sides of the armature fixed side with the same poles facing each other. as a stator,
A superimposed type commutator motor in which armature coil groups do not overlap, characterized in that a brush is provided on the stator side for sliding contact with the commutator. 2. The first conductor portion and the second conductor portion are wound in opposite directions 7'1. A superimposed type commutator motor in which armature coil groups do not overlap, as claimed in claim 1.