Armature coil and manufacturing method thereof
A technology for armature coils and manufacturing methods, which is applied in the field of armature coils and its manufacturing, can solve problems such as improving the space factor, and achieve the effects of increasing the space factor, improving the closeness, and high output
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Embodiment approach 1
[0021] Below, based on figure 1 Embodiment 1 of the present invention will be described. figure 1 Although the rotating electric machine is described as an electric motor and uses a stator as an armature, it can also be applied to a case where a rotor is used. figure 1 It is a partial cross-sectional view showing a coil insertion state of the armature coil according to Embodiment 1 of the present invention.
[0022] The stator is formed into a cylindrical shape by a stator core 1 formed by laminating a plurality of thin steel plates, and a plurality of teeth 2 are disposed radially inward. A groove portion 3 is formed between the teeth 2 . The first coil conductor 4a, the second coil conductor 4b, the third coil conductor 4c, and the fourth coil conductor 4d, or the first coil conductor 4e, the second coil conductor 4f, the third coil conductor 4g, and the fourth coil conductor 4h are respectively These slots 3 are inserted to form the armature coil 4 .
[0023] A case in ...
Embodiment approach 2
[0032] Next, based on figure 2 Embodiment 2 of the present invention will be described. Here, the method of forming the armature coil in the first embodiment described above will be described. figure 2 It is a coil forming process drawing which shows the coil forming process performed by the coil forming apparatus in the armature coil which concerns on Embodiment 2 of this invention.
[0033] figure 2 Shown is a molding device composed of an upper metal mold 10 and a lower metal mold 11 having a groove 13 whose width becomes narrower as it gets deeper. The shape of the groove 13 is substantially the same as the shape of the groove portion 3 into which each coil conductor of the armature coil 4 is inserted. In particular, the need to figure 2 The shape of the groove at the position indicated by L1 in (b) is set to be the same as the shape of the groove portion. Since other parts are not directly related to improving the space factor, it is not necessary to form the ent...
Embodiment approach 3
[0040] Next, based on image 3 Embodiment 3 of the present invention will be described. image 3 It is a coil forming process drawing which shows the coil forming process performed by the coil forming apparatus in the armature coil which concerns on Embodiment 3 of this invention.
[0041] The coil forming device in Embodiment 3 of the present invention is constituted by four die parts. For example, from the lower metal mold 14, the front end metal mold 15 placed on the lower metal mold 14 and having a shape similar to the front end of the groove portion, and the inner metal mold 16 placed on the lower metal mold 14 and having a shape similar to the inside of the groove portion , And the upper metal mold 17 constitutes. In addition, the upper die 17 has a slope portion 17a inclined to the right in the drawing, and can be pressed with the pressing force F2 until the slope portion 17a of the upper die 17 contacts the upper surfaces of the front end die 15 and the inner die 16....
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