Method of winding coil wire on wound field rotor

Abstract

To provide a method for winding a coil wire of a winding field rotor, capable of preventing the coil wire from slipping off without increasing the diameter of a motor.SOLUTION: The coil wire winding method of the wound field rotor alternately repeats an odd-numbered layer process of winding the coil wire from the inner circumferential side to the outer circumferential side in odd-numbered layers of 10, 30, 50, and 70 and returning the winding end to the inner circumferential side, and an even-numbered layer process of winding the coil wire from the inner circumferential side to the outer circumferential side and providing coil wire arrangement spaces 21, 41, and 61 for winding back the coil wire in even-numbered layers of 20, 40, and 60, and winding support coil wires 42 and 62 in four or more even-numbered layers and returning the winding end to the inner circumferential side. After finishing winding to the uppermost layer, the coil wire is wound in an inclined shape from the lowermost layer to the uppermost layer by winding the coil wire for rewinding in the arrangement spaces 61, 41, 21 of the coil wire for rewinding.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a method for winding a coil wire for a wound field rotor. [Background technology]

[0002] In Patent Document 1, the top layer coil winding has fewer turns than the layers below it, and one flat layer of the top layer of the flat portion coil winding is used, and at least one gap is provided between the coil windings, and then, when winding the coil wire toward the upper layer side, the coil wire is wound into the gap. The structure of burying and rewinding is described. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2009-240010 Summary of the Invention [Problem to be solved by the invention]

[0004] However, there was a problem that the motor diameter would be large if a trapezoidal shape was used to ensure a sufficient inter-pole gap. Also, the proposed fan-shaped rotor had the problem that the coil wire was prone to slipping off when it was returned at an angle from the outermost circumference to the innermost circumference. [Means for solving the problem]

[0005] In one embodiment, the coil wire winding method for the wound field rotor involves leaving gaps in the wiring paths of the second, fourth, and other different layers, and when rewinding the coil wire, returning it to the innermost circumference at an oblique angle. [Effects of the Invention]

[0006] According to the method of winding the coil wire of the wound field rotor of the present disclosure, it is possible to prevent the coil wire from slipping off without increasing the motor diameter. [Brief explanation of the drawings]

[0007] [Figure 1] 3 is a cross-sectional view showing an example of a method for winding a coil wire of the wound field rotor according to the first embodiment. FIG. [Figure 2] 1 is a cross-sectional view showing the principle of preventing slippage in a coil wire winding method for a wound field rotor according to a first embodiment. FIG. [Figure 3] 3 is a cross-sectional view showing a detailed example of a coil wire winding method for the wound field rotor according to the first embodiment. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0008] Embodiment 1 DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First Embodiment Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. Fig. 1 is a cross-sectional view showing an example of a method for winding a coil wire of a wound field rotor according to a first embodiment.

[0009] 1, the coil wire of the first layer 10 is wound starting from the inner periphery (upper side of FIG. 1) and wound to the outer periphery (lower side of FIG. 1), and then the end of the winding is returned to the inner periphery.

[0010] Next, the coil wire of the second layer 20 is wound starting from the inner periphery side and wound to the outer periphery side, where a space 21 for arranging the unwound coil wire is provided.

[0011] Next, the coil wire for the third layer 30 is wound starting from the inner periphery side and wound to the outer periphery side, and then the end of the winding is returned to the inner periphery side.

[0012] Next, the coil wire of the fourth layer 40 is wound starting from the inner periphery side and wound to the outer periphery side. At this point, a space 41 is provided for arranging the rewinding coil wire. Then, a supporting coil wire 42 is wound outside the space 41 for arranging the rewinding coil wire. The end of the winding is then returned to the inner periphery side.

[0013] Next, the fifth layer 50 of coil wire is wound starting from the inner periphery side and wound to the outer periphery side, and then the end of the winding is returned to the inner periphery side.

[0014] Next, the coil wire of the sixth layer 60 is wound starting from the inner periphery side and wound to the outer periphery side. Here, a space 61 is provided for arranging the rewinding coil wire. Then, a supporting coil wire 62 is wound outside the space 61 for arranging the rewinding coil wire. Then, the end of the winding is returned to the inner periphery side.

[0015] Next, the coil wire of the seventh layer 70 is wound starting from the inner periphery side and continuing to the outer periphery side.

[0016] Next, the rewinding coil wire is wound in the arrangement space 61 for the rewinding coil wire. Next, the rewinding coil wire is wound in the rewinding coil wire arrangement space 41. Then, the rewinding coil wire is wound in the rewinding coil wire arrangement space 21.

[0017] As described above, the coil wire winding method for the wound field rotor of the first embodiment alternately winds the coil wire from the bottom layer to the top layer in an odd-layer process in which, for the odd-layers 10, 30, 50, 70, the coil wire is wound starting from the inner periphery, wound to the outer periphery, and the end of the winding is returned to the inner periphery, and the even-layer process in which, for the even-layers 20, 40, 60, the coil wire is wound starting from the inner periphery, wound to the outer periphery, and spaces 21, 41, 61 are provided for arranging the rewinding coil wire, and then, for four or more even-layers, the support coil wire 42, 62 is wound and the end of the winding is returned to the inner periphery. This process is repeated alternately to wind the coil wire in order from the bottom layer to the top layer, and after winding up to the top layer, the rewinding coil wire is wound in the spaces 61, 41, 21 for arranging the rewinding coil wire, thereby winding the coil wire in an inclined manner from the bottom layer to the top layer.

[0018] Next, the principle of preventing slip-off will be described. Fig. 2 is a cross-sectional view showing the principle of preventing slip-off in the coil wire winding method for the wound field rotor according to the first embodiment.

[0019] Figure 2(A) shows an example of the current coil wire winding method. When the wound coil wire is rewound at an angle from position 1, a force is applied to the rewinding side toward the inner circumference, and since there is only one contact point (2) that provides support, the coil wire is prone to slipping off.

[0020] In contrast to this, FIG. 2(B) shows an example of a coil wire winding method according to the first embodiment. In Figure 2(B), a supporting coil wire 4 is placed in advance at the bottom end of the rewound coil wire 3 to prevent the coil wire from slipping off. This increases the number of contact points from one to two (5, 6), preventing slippage and ensuring a gap between the coil winding shape and the poles.

[0021] Next, a detailed example of a method for unwinding the coil wire by winding 84 turns will be described. Fig. 3 is a cross-sectional view showing a detailed example of a method for winding the coil wire of the wound field rotor according to the first embodiment.

[0022] First, as shown in Figure 3 (1), the first layer of coil wire is wound starting from the innermost periphery of the rotor and continuing outwards until the 14th turn.

[0023] Next, as shown in Figure 3 (2), the starting position of the second layer is moved from the end of the first layer to the 15th turn position, and the winding is continued in order toward the inner circumference until the 29th turn.

[0024] Next, as shown in Figure 3 (3), the starting position for the third layer is to wind the 30th coil wire between the 27th and 28th turns, and then wind it in order toward the outer periphery up to the 43rd turn.

[0025] Next, as shown in Figure 3 (4), the starting position for the fourth layer is to wrap the 44th turn around the outer periphery of the 43rd turn, and then wind the 44th turn inward until the 54th turn. The 55th turn (support coil wire) is placed with a gap the size of one coil.

[0026] Next, as shown in Figure 3 (5), the starting position for the fifth layer is to place the 56th turn of coil wire between the 53rd and 54th turns, and continue winding in order toward the outer periphery up to the 66th turn.

[0027] Next, as shown in Figure 3 (6), the starting position for the sixth layer is to wind the 67th turn on top of the 65th and 66th turns, and then wind the wire inward in order up to the 73rd turn. The 74th turn (support coil wire) is placed with a gap the size of one coil.

[0028] Next, as shown in Figure 3 (7), the starting position for the 7th layer is to wrap the 75th turn between the 72nd and 73rd turns, and continue winding in order toward the outer periphery up to the 81st turn. Then, for the 82nd turn, the coil wire is placed in the gap between the 81st turn and the 6th layer. For the 83rd turn, the coil wire is placed in the gap between the 82nd turn and the 4th layer. For the 84th turn, the coil wire is placed 29 turns inward from the 83rd turn, the 2nd layer.

[0029] The coil wire winding method for a wound field rotor according to the first embodiment can prevent the coil wire from slipping off without increasing the motor diameter. Specifically, the coil wire winding method for a wound field rotor according to the first embodiment has a slip-off prevention structure that adjusts the unwinding angle and the angle returned to the innermost circumference, making it possible to realize a compact size at low cost without adding a fixing device for holding the coil wire. Furthermore, the coil wire winding method for a wound field rotor according to the first embodiment prevents the coil wire from slipping off and ensures a gap between the poles, and enables coil winding at low cost without changing the operating conditions of the winding machine equipment.

[0030] The present invention is not limited to the above-described embodiments, and modifications can be made as appropriate without departing from the spirit of the present invention. For example, although an example of seven-layer coil winding is described in the first embodiment, the number of layers may be any number. Furthermore, the coil wire winding method for the wound field rotor of the first embodiment can be applied not only to rotors (motors) for automobiles, but also to rotors (motors) in general that are wound with coil wire. [Explanation of symbols]

[0031] 3 Rewind coil wire: 4 Support coil wire: 10 1st layer: 20 2nd layer: 21, 41, 61 Rewind coil wire placement space: 30 3rd layer: 40 4th layer: 42, 62 Support coil wire: 50 5th layer: 60 6th layer: 70 7th layer:

Claims

[Claim 1] For odd-numbered layers, the coil wire is wound from the inner periphery, wound to the outer periphery, and then returned to the inner periphery. For even-numbered layers, the coil wire is wound from the inner periphery side, wound to the outer periphery side, and after providing a space for the rewinding coil wire, a supporting coil wire is wound for four or more even-numbered layers, and the end of the winding is returned to the inner periphery side. This even-numbered layer process is repeated alternately to wind the coil wire in order from the bottom layer to the top layer. After the winding is completed up to the top layer, the rewinding coil wire is wound in the arrangement space of the rewinding coil wire, A coil winding method for a wound field rotor in which the coil wire is wound in an inclined pattern from the bottom layer to the top layer.

Images