JPH0746890B2 - Armature winding method - Google Patents

Description

The present invention relates to an armature winding method for a DC motor using a field-forming permanent magnet, and a winding time required for the armature winding and the winding time of the armature winding. The present invention relates to an armature winding method that uses less and has good winding efficiency.

[Problems to be solved by conventional technology and invention]

FIG. 6 is a cross-sectional view of an essential part for explaining a conventional DC motor, and FIGS. 4 and 5 are shown by shifting the conventional DC motor in FIG. 6 from the side by 90 degrees. ing.

In FIG. 6, reference numeral 12 in the drawing is a permanent magnet, 13 is a motor case, 4 is a small case, 5 is an armature, 6 is an armature winding, 7 is a motor shaft, 8 is a bearing, 9 is a brush, 10 is a brush terminal and 11 is a commutator.

The embodiment shown in FIG. 6 is a DC motor having a configuration basically similar to that of a known DC motor.

That is, the current is the brush terminal 10, the brush 9, the commutator.
By energizing the armature winding 6 via 11,
The DC motor is configured so that the armature 5 rotates.

Among such DC motors, generally, in the motor as shown in FIG. 4, the brush position must be in the positional relationship with respect to the magnet. However, in this case, since the effective length l ₁ of the brush is shortened, the spring property of the brush is lost, and there is a possibility that the characteristics of the motor against vibration may be impaired. In order to increase the effective length of the brush, it is sufficient to dispose the brush in the direction in which the magnets face each other, but there is an undesired problem that the armature and the brush are out of phase.

Therefore, in order to increase the effective length of the brush, it is necessary to dispose the brushes in the opposite direction of the magnet and shift the winding position of the armature winding so as to match the phase of the armature with the magnet.

For example, FIG. 5 shows an example in which the winding position is shifted to increase the effective length of the brush.

As shown in the figure, the brush position is offset from the magnet facing direction by θ degrees (≈30 degrees). This is because the 3-pole armatures are arranged at 120 degree intervals, so the above deviation is 90
This means that the commutation is performed under the same positional relationship as that of FIG. 4 as a result.

Next, a conventional armature winding method considering the phase of the armature with respect to the magnet will be described with reference to FIG.

The embodiment shown in FIG. 2 has basically the same structure as a known DC motor. In the figure, "1" to "3" are labels attached to the armature poles and the commutator tongues corresponding to the armatures, and the wire leads are wound as shown by the arrow to form the coil C1.
Or forms the coil C3. The armature poles and the commutator tongues “1” to “3” are arranged at 120 ° intervals, and the positions of the first armature pole and the first commutator tongue are also displaced as shown in the figure. ing.

The embodiment shown in FIG. 2 will be described for a three-pole DC motor.

First, the wire lead is connected to the first commutator tongue at the beginning of winding, then turns around the first armature pole to form the first coil, and then skips adjacent second and third armature poles. Then connected to the second commutator tongue. After that, the wire lead is extended in the circumferential direction and turns around the second armature pole to form the second coil, and then skips the adjacent third and first armature poles before the third commutator tongue. Connected.

By repeating the above, all the coils are wound.

In the armature winding method of the embodiment shown in FIG. 2, since the brush and the armature are out of phase in order to increase the length of the brush, the wire lead is connected to the adjacent slot and commutator tongue. Absent.

Therefore, there is an undesired problem that the wire lead cannot travel the shortest distance, the winding time is long, and the electric wire is used in a large amount.

Further, FIG. 3 is a developed view of the armature for explaining the armature winding method in the conventional three-pole DC motor, as in FIG.

Similarly, in the figure, "1" to "3" are labels attached to the armature pole and its commutator tongue, and C1 to C3 represent coils.

The armature poles and their commutator tongues are arranged at 120-degree intervals, and the positions of the first armature poles and the first commutator tongues are displaced as shown.

First, the wire lead is wound around the first armature pole from the first commutator tongue to form the first coil, and is turned around the adjacent second armature pole, and then connected to the second commutator tongue. After turning around the second armature pole once more to form the second coil, turning around the third armature pole and then connecting to the third commutator tongue.

The wire lead connected to the third commutator tongue further goes around the third armature pole to form a third coil,
After turning around the first armature pole, it is connected to the first commutator tongue.

Also in the embodiment shown in FIG. 3, it can be seen that the winding time is long and the amount of electric wire used is large for the same reason as in the embodiment shown in FIG.

As described above, in the conventional DC motor armature winding method,
There is an undesired problem that the winding time is long and the amount of electric wires used is large.

The present invention provides an armature winding method for reducing the time required for winding an armature and reducing the amount of electric wires used.

[Means for solving problems]

The present invention is intended to solve the above problems, and therefore the armature winding method of the present invention is a method for starting winding in an armature winding method of a DC motor having a permanent magnet for forming a field. After being connected to the first commutator tongue, the wire lead enters into the first slot located directly below, through the other second slot of the pair with the first slot, and further through the first slot. The first coil is formed by returning to the 2 slot and then the wire lead is
A third commutator tongue adjacent to the second commutator tongue
The third connected to the commutator tongue and then directly below
Enter the slot, form the second coil in the same way as when winding the first coil, repeat the above operation until all the coils are wound, and when the last coil is wound, the wire lead first It is characterized in that it is connected to the connected first commutator tongue. Hereinafter, description will be given with reference to the drawings.

〔Example〕

FIG. 1 is a winding development diagram and a commutator tongue connection method explanatory diagram illustrating a three-pole DC motor that is an embodiment of an armature winding method according to the present invention.

Further, "1" to "3" and "1 '" to "3'" in the figure are labels attached to the armature pole and its commutator tongue, and C1 to C3 are coils, A to C and A '. Through C'represent the slots of the armature pole. Also,
The armature poles and commutator tongues are arranged at 120 degree intervals. The armature poles and the commutator tongues are arranged as shown. The sixth embodiment of the present invention shown in FIG.
This is a DC motor having a configuration basically similar to that of the known conventional DC motor shown in the figure. Therefore, the specific explanation is [problems to be solved by the prior art and invention]
Since it was done in the section of, omit it.

In FIG. 1, first, the wire lead at the beginning of winding is the first
After being connected to the commutator tongue “1”, it passes through the slot A located directly below the first commutator tongue “1” and then to the slot B.
Then, it returns to the slot A and is wound around the armature pole "1" to form the coil C1. The wire lead forming the coil C1 passes through the slot B and is connected to the third commutator tongue “3” without being connected to the second commutator tongue “2”. After that, the wire lead is not wound around the slots B and C of the armature pole "2" but passes through the slot C located directly below the third commutator tongue "3" to reach the slot A ',
Further, the coil C2 is formed by returning to the slot C and winding it around the armature pole "3".

The wire lead forming the coil C2 is not connected to the first commutator tongue "1 '" adjacent to the third commutator tongue "3" but passes through the slot A'and the second commutator tongue "2'".
Connected to. The wire rud connected to the second commutator tongue “2 ′” then passes through the slot B ′ located directly below the commutator tongue “2 ′” to the slot C ′ and then back to the slot B ′, and the armature. Wound around pole "2 '" to form coil C3.

The wire lead forming the coil C3 is not connected to the third commutator tongue "3 '" but is connected to the first first commutator tongue "1" through the slot C'. In this way all coils are wound around the armature poles.

The connection between the wire lead and the commutator tongue is, as shown in the upper part of FIG. 1, a case where the wire lead is connected so that it enters from one of the commutator tongues and exits to the other, and the commutator. There is a case where the tongue is inserted and removed from only one side of the tongue, and either of them may be connected.

〔The invention's effect〕

As described above, according to the present invention, since the distance between each coil and the commutator tongue is the shortest, an inexpensive armature winding method that does not use unnecessary electric wires and uses a small amount of electric wires is provided. Can be provided.

Further, since the winding is performed at the shortest distance between each coil and the commutator tongue, there is no wasteful operation, the efficiency of the winding device is high, and the winding time can be shortened. can do.

Further, when compared with an ordinary small DC motor, the embodiment of the present invention is about 1.7 seconds longer than that shown in FIG.
The winding time could be shortened by about 3 seconds from that shown in the figure.

[Brief description of drawings]

FIG. 1 is an exploded view of a winding and an explanatory view of a commutator tongue connection method for explaining an embodiment of an armature winding method according to the present invention.
FIG. 2 is a winding development view for explaining a conventional armature winding method, FIG. 3 is a development view for explaining a conventional armature winding method, and FIG. 4 is an explanation of the relationship between a magnet and a brush in a motor. 5 and 5 are explanatory views of the relationship between magnets and brushes in the motor, and FIG. 6 is a cross-sectional view of essential parts for explaining the configuration of the present invention and the conventional DC motor. In the figure, "1" to "3" or "1 '" to "3'" are labels attached to armature poles and commutator tongues, 4 is a small case, 5 is an armature, 6 is an armature winding, 7 is a motor shaft, 8 is a bearing, 9 is a brush, 10 is a brush terminal, 11
Is a commutator, 12 is a permanent magnet, 13 is a motor case, A to C or A'to C'is an armature pole slot, C1
Through C3 represent armature coils.

Claims (1)

[Claims] 1. A method for armature winding of a DC motor having a permanent magnet for forming a field, wherein a wire lead at the beginning of winding is connected to a first commutator tongue and then enters a first slot located directly below. Forming a first coil by passing through the other second slot of the pair with the first slot and further back through the first slot to the second slot, and then the wire lead to the first commutator tongue. It is connected to the third commutator tongue instead of the adjacent second commutator tongue, then enters the third slot located directly below, and the second coil is wound in the same manner as when the first coil is wound.
Forming a coil and repeating the above operation until all the coils are wound, and when the last coil is wound, the wire lead is connected to the first commutator tongue which is connected first. Motor armature winding method.