JPH065978B2 - Capacitor motor - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a capacitor electric motor used for driving a fan of home electric appliances and the like.

2. Description of the Related Art Generally, when a winding conductor is wound directly from the outer diameter of a stator of a capacitor motor of this type, an opening for winding the winding is required on the outer circumference, but the yoke is There are two methods, one is to provide the same number of openings as the number of stator slots, or the other is to divide the yoke into iron cores and tooth cores and provide openings in the outer periphery of tooth cores.
There is Tsuto.

Usually, the latter is adopted because of easy assembly, but the present invention also improves the problem when the latter winding method is adopted and gives a great effect.

Conventionally, a stator of this type of capacitor motor is wound directly around a tooth core 101, which is press-fitted into the inner diameter of a yoke core (not shown), as shown in FIGS. Auxiliary winding 1 that is wound after the main winding 102 is wound
No. 03 slides on the surface layer of the main winding 102 in the outer diameter direction of the iron core, so that it is difficult to fit it in the inner portion (inner diameter portion) of the slot 104 for winding the auxiliary winding 103.

Problems to be Solved by the Invention When it is attempted to wind more than the auxiliary winding 103 having the winding amount shown in FIG. 6, the winding overflows from the opening 105 and the winding becomes impossible. That is, the slot 106 still has the auxiliary winding 10
There is a space for winding 3, but there is a problem in that it is an invalid space and cannot be wound in a rough situation, so that the slot area cannot be effectively utilized.

The present invention solves such a problem, and it is an object of the present invention to effectively utilize the slot space of the condenser motor stator and to reduce the outer diameter of the stator.

Means for Solving the Problems In order to solve this problem, the present invention has a tooth around which a winding conductor corresponding to the number of poles of an electric motor is wound, and a bridge is provided at the inner peripheral edge of adjacent teeth. A tooth core that arbitrarily stacks an iron core plate having a entanglement part and an iron core plate that does not have a bridging part, and a yoke iron core that is fitted to the outer peripheral part of the tooth core to form a magnetic path, and The main winding is wound directly around the tooth core, and the auxiliary winding is wound directly around the toothed core at a position separated by 90 electrical degrees from the main winding. A spacer made of an insulating material for raising and holding the coil end portion is provided on a plurality of tooth portions.

Operation In the above configuration, after the main winding is wound directly, the auxiliary winding is held up and held by the wall of the insulating material and wound on the surface layer of the main winding without slipping. It will fit inside the slot in the state. Therefore, the empty space of the slot in which the auxiliary winding cannot be wound is extremely reduced.

EXAMPLE An example of the present invention will be described below with reference to FIGS.

In the drawing, reference numeral 1 denotes a tooth core, which is composed of an iron core plate 3 having a bridging portion 2 at an inner peripheral edge thereof and an iron core plate 4 having no bridging portion, and the tooth iron core 1 has an opening 5 at an outer peripheral portion thereof. The auxiliary winding 8 raised by the main winding 6 and the spacer 7 made of an insulating material is wound around the slot 10 via the insulating material 9, and is fitted and fixed in the inner diameter portion of the yoke portion iron core 11. There is. In the above configuration, the tooth core 1 in which the iron core plate 3 having the bridging portion 2 and the iron core plate 4 having no bridging portion are laminated and fixed to each other is coated with the insulating material 9 and then first opened from the opening of the outer diameter portion. The main winding 6 is wound directly, and then the auxiliary winding 8 is wound.
Since the bottom is raised by the spacer 7, it does not slip on the surface layer of the main winding 6 during winding. Therefore, the auxiliary winding can be wound in order from the inner portion (inner diameter side) of the slot 6 to the vicinity of the opening 7.

As described above, according to the present embodiment, since the spacer 7 made of an insulating material is provided on the surface of the tooth core 1, the auxiliary winding 8 that is directly wound after the main winding 6 is raised and the slot 10 is closed. It will fit in from the inner part (inner diameter side). That is, the invalid empty space of the slot 10 can be minimized.

EFFECTS OF THE INVENTION As is clear from the above description of the embodiments, the present invention effectively utilizes the space of the slots by minimizing the invalid empty space of the stator slots in which the windings are directly wound. The effect that the outer diameter of the stator can be reduced can be obtained.

[Brief description of drawings]

FIG. 1 is a plan view showing a tooth core structure of a condenser motor stator according to an embodiment of the present invention, FIG. 2 is a view in the direction of arrow A in FIG. 1, and FIG. 3 is an enlargement of the stator inner diameter portion. Side view, 4th
FIG. 5 is a plan view showing the entire structure of the stator, FIG. 5 is a plan view of a tooth core of a conventional condenser motor stator, and FIG. 6 is a view in the direction of arrow B in FIG. 1 ... Tooth core, 2 ... Bridge part, 3 ... Core plate having bridge part, 4 ... Core plate without bridge part, 5 ... Opening part, 6 ... Main winding (Or auxiliary winding), 7 ... Spacer, 8 ... Auxiliary winding (or main winding), 9 ... Insulating material, 10 ... Slot, 11 ... Yoke part iron core.

Claims (1)

[Claims] 1. An iron core plate having teeth on which winding conductors are wound according to the number of poles of an electric motor, and a core plate having a bridging portion on an inner peripheral edge of adjacent teeth, and an iron core having no bridging portion. A stator core is constituted by a tooth core in which plates are arbitrarily laminated and a yoke core that forms a magnetic path by being fitted to the outer periphery of the tooth core, and is wound directly around the tooth core. The main winding or the auxiliary winding, and the auxiliary winding or the main winding that is directly wound at a position separated by an electrical angle of 90 ° from the main winding after winding the main winding. Capacitor electric motor having spacers made of an insulating material for raising and holding the coil end portion on its bottom, provided on a plurality of teeth.