JP2553582B2 - Capacitor motor stator - Google Patents

Description

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

Conventional Technology Generally, for the stator of this type of capacitor motor,
When the winding conductor is wound directly from the outer diameter portion, an opening for winding winding is required on the outer peripheral portion. Therefore, a method of providing the same number of openings as the stator slots in the yoke portion, or a method of dividing the yoke core into tooth cores and tooth cores and providing openings in the outer periphery of the tooth cores has been used.

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

Problems to be Solved by the Invention Conventionally, as shown in FIGS. 5 and 6, a stator of a capacitor motor of this type has teeth that are press-fitted into an inner diameter portion of a yoke portion iron core (not shown). When directly wound around the core 101, the auxiliary winding 103 is wound after the main winding 102 is wound.
Since the surface layer of the main winding 102 slides in the outer diameter direction of the iron core, it is difficult to fit in the inner portion (inner diameter portion) of the slot 104 for winding the auxiliary winding 103. Therefore, if it is attempted to wind more than the auxiliary winding 103 having the winding amount shown in FIGS. 5 and 6, it will overflow from the opening 105 and cannot be wound. That is, although there is still a space for winding the auxiliary winding 103 in the slot 104, it is an invalid space and cannot be actually wound, resulting in a problem that the slot area cannot be effectively utilized.

The present invention solves such a problem by effectively utilizing the slot space of the condenser motor stator,
The outer diameter of the stator is reduced.

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 formed by arbitrarily laminating an iron core plate having a entanglement part and an iron core plate having no bridging part, a yoke part core fitted to the outer peripheral part of the tooth part core to form a magnetic path, and the teeth And a winding wound directly around the core, and a winding wound directly around the core at a position separated from the winding by an electrical angle of 90 °.
A structure in which the coil end portion of the winding located on the outer peripheral side is provided on a plurality of teeth of a spacer made of an insulating material for raising and holding the coil end portion, and the winding holding surface of the spacer is inclined toward the center of the stator inner diameter. It is what

With the above structure, after auxiliary winding of the main winding, the auxiliary winding is wound up and held by the spacer made of an insulating material and wound on the surface layer of the main winding without slipping. It will fit inside the slot. 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 figure, reference numeral 1 denotes a tooth core, which comprises 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 main winding 6 and the auxiliary winding 8 raised from the bottom by the spacer 7 made of an insulating material are wound around the slot 10 via the insulating material 9, and are fitted and fixed to the inner diameter portion of the yoke portion iron core 11. Has been done. In the above structure, 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 arbitrarily laminated and fixed, is covered with the insulating material 9, and then the outer diameter portion The main winding (or auxiliary winding) 6 is wound directly from the opening 5 and then the auxiliary winding (or main winding) 8 is wound. This auxiliary winding 8 is shown in FIG. As shown, it is raised by the spacer 7.
Moreover, since the spacer 7 is inclined toward the inner diameter of the stator, the main winding 6 is wound while being pressed in the inner diameter direction of the stator. Therefore, the auxiliary winding can be wound in order from the inner part of the slot 6 (on the inner diameter side of the stator) to the vicinity of the opening 5 of the outer diameter part.

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 18 wound directly following the main winding 6 is raised and the stator is Since it receives a force that goes in the inner diameter direction, the inner part of the slot 10 (inner diameter side)
It will be settled from. That is, it is possible to minimize the invalid empty space of the slot.

EFFECTS OF THE INVENTION As is apparent from the above description of the embodiments, the present invention effectively utilizes the space of the slots by limiting the invalid empty space of the winding and the stator slot wound directly. However, 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, and FIG. 2 is a line A- in FIG.
O sectional view, FIG. 3 is an enlarged side view of the inner diameter portion of the stator, FIG.
FIG. 5 is a plan view showing the entire structure of the same solid member after winding, FIG. 5 is a plan view of a tooth core of a conventional condenser motor stator, and FIG. 6 is a sectional view taken along line B--O of FIG. is there. 1 ... Tooth core, 2 ... Bridging part, 3 ... Core plate having 2 ... 4 Core plate without 2 ... 5 Opening, 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)

(57) [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 toothed iron core in which plates are arbitrarily laminated, a yoke ironed core fitted to the outer peripheral portion of the toothed iron core to form a magnetic path, a winding wound directly around the toothed iron core, and the winding A spacer made of an insulating material, which has a winding wound directly around the wire after winding the wire and is wound directly at a position separated by an electrical angle of 90 °, and holds the coil end portion of the winding located on the outer peripheral side by raising the bottom. A stator of a condenser motor provided on a plurality of teeth, wherein a winding holding surface of the spacer is inclined toward the center of the inner diameter of the stator.