JPH022040Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an armature of a motor, and more specifically, to a winding structure of an armature coil wound around an armature core.

The conventional motor armature 1 structure is
The armature coil 3 wound around the armature core 2 has an appearance as shown in FIG.
As shown in the enlarged cross-sectional view of the winding part shown in FIG.
Although the coil end portion 5 occupies a small portion of the slot 4, the coil end portion 5 partially bulges out, making it difficult to wind the armature coil 3 around the center of the slot 4. This is Figure 1,
As shown in Figure C, the coil end portions 5, 5 of the armature coil 3 which are wound first are the coil end portions 5', 5 of the armature coil 3 which are wound later.
5' to the outer periphery. The armature core 2 having such a structure leaves a lot of space inside the slot 4 that is not filled with the coil after the armature coil 3 is wound. It was hot. or,
After winding, the coil end portions 5 overlap and swell up to exceed the outer diameter of the armature core 2. This increases the appearance of the armature coil 2, making the motor larger and heavier. This led to increased costs.

In view of the above problems, the present invention provides a convex portion at the end of the armature core, and uses the convex portion to regulate the armature coil wound in the slot of the armature core, thereby increasing the space factor. To provide a motor armature that can be well wound.

Embodiments of the present invention will be described below based on the drawings. In the embodiment shown in FIG. 2A, a plate 7 is provided with a protruding pin 6 and regulates the winding of the armature coil 3, which is integrally molded with resin and has a shape that substantially matches the end face shape of the armature core 2. It is.
As shown in FIG. 2, the plate 7 is assembled to both end faces of the armature core 2, and the armature coil 3 wound in the slot 4 of the armature core 2 is thereby As shown in FIG. 2C, a coil end portion 5 is formed by winding a wire between the protruding pins 6, 6 and the shaft 8. The coil end portion 5 that is wound in this way and formed one after another is connected to the armature core 2 that is wound next.
Since the armature coil 3 is exposed over almost the entire area without covering the slot 4, the armature coil 3 extends from the center of the slot 4 to the entire interior area, and as shown in the partially enlarged cross section shown in FIG. This allows for winding with good quality. Also, armature 1 after winding is completed.
As shown in FIG. 2, the side surface shape of the coil end portion 5 is mountain-shaped without being larger than the outer diameter of the armature core 2, so that it can be miniaturized. What is shown in FIGS. 3A to 3D is another embodiment of the armature of the motor according to the present invention. , which restricts the armature coil 3 wound within the slot 4. ``B'' has a claw 9 that stands upright, and both ``A'' and ``B'' are made of resin or a metal plate. In C, claws 9 are formed by bending the armature core 2 at both ends. D is one in which rivets or pins 10 or the like are embedded in both ends of the armature core 2. In E, a penetrating rod 11 is embedded in an armature core 2. F is shaft 8
The armature core 2 and the armature core 2 are integrally molded with resin, and a protruding pin 6 is provided. The insulating wall 12 of the winding portion and the protruding pin 6 are both integrally molded with resin. The arrangement, number, shape, etc. of the protruding pins or claws that regulate the windings of these armature coils can take various forms depending on the specifications of the windings and the equipment.

The motor armature according to the present invention described in detail above has the following advantages.

Since the armature has become smaller and the entire motor can also be made smaller, it has become possible to reduce both weight and cost.

The effect can also be obtained by providing the protruding pin or pawl on one side of the armature core.

As the space factor increases, the amount of copper in the coil end portion also increases, but as the axial length of the armature increases, the ratio of the amount of copper in the coil end portion can be reduced.

As the number of poles increases, the effect can be increased.

[Brief explanation of the drawing]

FIGS. 1A, 1B, and 1C are explanatory diagrams of a conventional example of an armature of a motor according to the present invention. Figure 2,
A, B, H, D, and H are embodiment diagrams of a motor armature according to the present invention. FIGS. 3A to 3D are explanatory views of another embodiment of the armature of the motor according to the present invention. 1: Armature your core, 2: Armature your core,
3: Armature coil, 4: Slot, 5,
5': Coil end portion, 6: Projecting pin, 7: Plate, 8: Shaft, 9: Claw, 10: Rivet or pin, 11: Penetrating rod, 12: Insulating wall of winding portion.

Claims (1)

[Scope of utility model registration request] 1. An armature for a motor, characterized in that a convex portion is provided on an end face of the armature core for regulating the winding position of an armature coil wound in a slot of the armature core.