JPS624936B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to rotor coil terminal processing, and an object of the present invention is to safely process the winding start and winding end of a rotor coil.

In general, the conventional type has two parts at the beginning and end of the winding of the rotor's coil tube A, as shown in Figures 1 and 2.
Since the electrical connection was made by twisting the ends of the coils together, the ends of the coils were pressed together by inserting the core metal inside and pressing the outer periphery with a mold to compress the diameter. It has the disadvantage that it is bent in the mold and bites into other wires, resulting in rare shorts and wire breakage.

The present invention has been made in view of the problems described above, and is an attempt to remedy the drawbacks.

Embodiments of the present invention will be described below with reference to the drawings.

In FIG. 3, A is a coil tube in which a coil winding 1 is wound into a cylindrical shape, and the winding start terminal part 2 and winding end terminal part 3 of the coil wire 1 are connected by soldering or welding. ing.

Therefore, the connecting portions are arranged side by side along the winding direction of the coil wire 1.

Note that the winding start terminal part 2 and the winding end terminal part 3 of the coil wire 1 are not limited to being connected by partially overlapping the round wires as they are. Fifth
As shown in the upper part of the figure, the coil end portion 2 may be flattened and connected;
As shown in the figure, the terminal portions may be connected against each other. In this way, when the coil end portions are joined and connected parallel to the flow of the coil wire 1 without twisting each other, the connected portion does not swell, and rare shorts and disconnection defects are less likely to occur.

In conventional terminal processing, the stray wire portion protrudes from the end surface of the coil cylinder as shown in the upper part of Fig. 2, so in press processing, in which a core metal is inserted into the inner space and the outer periphery is pressed and compressed to a diameter while being struck with a die, The stray wire part bites into the wound coil element wire, and as a result, the insulation coating on the surface thereof is destroyed, and rare shorts and disconnection defects are likely to occur.

However, in the coil tube of the rotor of the present invention, as described above, the winding start end and the winding end of the coil tube wound into a cylindrical shape are arranged along the winding direction of the coil wire, and the coil tube is wound in a cylindrical shape. Since the connection is made by soldering or welding on the outer circumferential surface, the connection part does not protrude beyond the end surface of the coil tube. Therefore, when the coil tube is pressed and processed into high-density winding, there is no chance of rare shorts or wire breaks. It has the effect of eliminating the occurrence of defects.

[Brief explanation of the drawing]

1 and 2 are perspective views showing the coil tube of a conventional rotor, FIG. 3 is a perspective view showing the coil tube of the rotor of the present invention, FIG. 4 is a perspective view of the same coil tube, and FIG.
6 and 6 are perspective views showing a coil tube according to another embodiment of the present invention. A... Coil tube, 1... Coil wire, 2... Winding start terminal part, 3... Winding end terminal part.

Claims (1)

[Claims] 1 The winding start end and winding end of the coil tube to be wound into a cylinder are arranged along the winding flow direction of the coil wire, and are brought into contact with each other and connected by welding or soldering to form a coil tube. A coil tube of a rotor, characterized in that the coil tube is arranged on the outer peripheral surface of the rotor.