JPH11234976A - Formation of sr motor coil - Google Patents

Abstract

PROBLEM TO BE SOLVED: To manufacture a large-capacity motor with fine wires by forming a plurality of wiring blocks each of which is a plurality of aggregated fine wires, and inserting and layering the wiring blocks in order toward you from the deep side in the depth direction of a stator core. SOLUTION: Wiring blocks 2 of (N) pieces around which fine wires (copper wires) are wound so as to obtain a ring shape are formed in advance, and inserted in order toward you from the deep side in the depth direction of a stator core 10. In the respective wiring blocks 2, the respective leader lines of a winding start section 2A and a winding finish section 2B are led to the outside so as to run through a clearance between all winding blocks 2 wound already on the deep side and the stator core 10. By connecting the winding start sections 2A with the winding finish sections 2B of the respective winding blocks 2 in parallel respectively, it is possible to run large current of a total I0 =I1 +I2 +I3 +...+IN of the values of the current running through the respective winding blocks, through the wiring blocks 2 of (N) pieces, even if a coil is formed out of fine wires.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for forming an SR motor coil by winding a winding around a stator core to form an SR motor coil.

[0002]

2. Description of the Related Art For example, in a low-voltage, large-capacity motor, a large amount of current flows, so that it is necessary to increase a sectional area of a winding. Therefore, it is necessary to use a large-diameter winding for the coil of such a motor.

[0003]

SUMMARY OF THE INVENTION Under such circumstances,
When a coil is formed using a thick wire, processing and deformation are greatly restricted due to the large cross-sectional area, and it is difficult to wind the coil with an automatic winding machine. For example, a large gap is likely to be formed between the core and the core. In this case, it is necessary to make a correction such that the gap is reduced by hitting with a hammer. Under such circumstances, it is necessary for the worker to work with the machine, such as winding by a manual winding machine or by a semi-automatic winding machine. This is a factor and also increases the working time (decreases working efficiency).

In view of the above circumstances, the present invention provides a SR motor coil capable of manufacturing a large-capacity motor with a thin wire and shortening the winding time of the coil to increase working efficiency. It is intended to provide a method.

[0005]

That is, the invention according to claim 1 is a method for forming an SR motor coil by winding a winding around a stator core to form an SR motor coil. A large number of winding blocks in which a large number of fine wires are gathered are formed as windings forming the windings, and the winding blocks are sequentially inserted and laminated in the depth direction of the stator core from the back to the front, and these winding blocks are stacked. The lead wires are respectively drawn from the wire blocks to form a stator coil of the SR motor.

According to a second aspect of the present invention, a lead wire from each winding block is drawn out to the outside through the inside of the already inserted winding block and connected in parallel with each other.

[0007]

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 shows a main part of a stator 1 of an SR motor to which a coil formed by a method according to the present invention is attached. This SR motor coil has a large number of winding blocks 2 stacked.

In this winding block 2, as shown in FIG. 2, N-pieces in which a thin wire (copper wire) is wound in a ring shape are formed in advance (the shapes may be the same or different).
These are inserted in the depth direction of the stator core 10 sequentially from the back to the near side. In addition, each winding block 2 connects each lead wire of the winding start portion 2A and the winding end portion 2B with a gap between all the winding blocks 2 on the back side already wound up to then and the stator core 10. It has been pulled out to pass through.

In this embodiment, as shown in FIG. 3, winding is performed sequentially from the inner peripheral side to the outer peripheral side, whereby the final winding is wound in an odd number of layers. Then, the winding ends on the opposite side (ends on the back side of the winding block 2) from the winding start part (for example, starts winding on the front side of the winding block 2). Only the lead wire on one (starting) side needs to be passed. Further, if the lead wires passing through the inside of the winding block are routed side by side (by being slightly shifted) in the outer peripheral surface direction of the stator core 10 so as not to be overlapped one by one, the connection between the winding block 2 and the stator core 10 can be made. The gap between them only needs to have a margin for one thin line.

In addition, the winding start portion 2 of these winding blocks
A and the winding end portion 2B are connected in parallel, as shown in FIG. 4, so that even if a coil is formed of a plurality of (N) winding blocks by a thin wire, each winding block can be formed. , A large current of Io = I1 + I2 + I3 +... + IN can be passed.

Therefore, according to this embodiment, since the lead wires are passed between the inside of the winding block 2 and the stator core 10, wasteful space can be minimized. This is convenient for miniaturization. Also, even if the constituting copper wire is a thin wire,
A large-capacity current can be passed simply by connecting the lead wires from each winding block in parallel.

[0012]

As described above, according to the present invention, a large number of winding blocks each including a large number of fine wires are formed as windings for forming a coil, and the winding blocks are arranged in the depth direction of the stator core. Inserting and laminating sequentially from the part toward the front, so even when forming a large-capacity motor, a large processing / deformation force is required to form the coil because of the use of thin wires It is possible to manufacture a large-capacity SR motor coil even with a thin wire using an existing automatic winding machine, in particular, only by devising the connection of connecting the lead wires in parallel. In addition, since the automation is possible, the production time can be easily reduced, and the production cost can be significantly reduced.

[Brief description of the drawings]

FIG. 1 is a front view showing a main part of a stator of an SR motor to which a coil according to the present invention is attached.

FIG. 2 is an explanatory view showing a coil forming method of the present invention.

FIG. 3 is an explanatory view showing a method for leading out a lead line according to the present invention.

FIG. 4 is a wiring diagram showing a method of connecting a winding block according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Stator 10 Stator core 2 Winding block 2A Leader (starting part) 2B Leader (end)

Claims (2)

[Claims] 1. A method of forming an SR motor coil by winding a winding around a stator core, comprising: a winding block in which a large number of fine wires are assembled as the winding forming the coil. A large number of coils are formed, and the winding blocks are sequentially inserted and laminated in the depth direction of the stator core from the back to the front, and lead wires are respectively drawn from these winding blocks to form a stator coil of the SR motor. Forming a coil for an SR motor. 2. A coil for an SR motor according to claim 1, wherein a lead wire from each winding block is drawn out to the outside through the inside of the already inserted winding block and connected in parallel with each other. Method.