JP2953139B2 - Motor armature assembly - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an armature assembly for a commutator motor used in home electric appliances.

[0002]

2. Description of the Related Art In recent years, the demand for thin motors in home electric appliances has rapidly increased.

An embodiment of a conventional armature assembly will be described below with reference to the drawings. In order to make the motor thin, it is contradictory to attach an internal fan for cooling.

FIG. 2 is a half sectional view of a conventional armature assembly. In FIG. 2, 1 is an axis. Reference numeral 2 denotes an armature core in which electric steel sheets are stacked, and is press-fitted and fixed to the shaft 1. 3 is a winding. Reference numerals 4 and 5 denote end insulators A and B for insulating the armature core 2 and the winding 3 from each other. Reference numerals 6 and 7 denote shaft insulations A and B for insulating the shaft 1 and the winding 3 from each other. Reference numeral 8 denotes a commutator, which is press-fitted and fixed to the shaft 1 and connected to the winding 3. An inner fan 29 is fixed to the shaft 1 by press fitting. Reference numeral 10 denotes a wedge for preventing the winding 3 from jumping out of the slot of the armature core 2, and is press-fitted into each slot and fixed.

[0005] The assembly of the armature assembly configured as described above will be described below. First, an armature core 2 is press-fitted and fixed to a shaft 1, and an end insulator A
4, B5 and shaft insulations A6, B7 are respectively press-fitted and fixed. Next, the commutator 8 is press-fitted into the shaft 1, and the winding 3 is carried out in each slot of the armature core 2 in which the slot insulating paper is inserted, and each winding is connected to the commutator 8. Then, the wedge 10 is press-fitted into each slot to prevent the winding from jumping out, and finally the inner fan 29 is press-fitted.

[0006]

However, in the above-described configuration, the press-fitting of the inner fan 29 increases the dimension between the bearings by the thickness of the inner fan. or,
Since one wedge is inserted into each slot, a lot of work is required after winding.

SUMMARY OF THE INVENTION In view of the above problems, it is an object of the present invention to prevent an increase in dimension between bearings even when an internal fan is attached, and to eliminate a wedge insertion operation performed after winding.

[0008]

In order to achieve the above object, an armature assembly according to the present invention has a structure in which an internal cooling fan integrated with a wedge is inserted into the outer periphery of a winding. .

[0009]

According to the present invention, it is possible to prevent an increase in dimension between bearings due to the mounting of the inner fan by the above-mentioned structure, and to eliminate a wedge insertion operation after winding.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An armature assembly according to one embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a half sectional view of an armature assembly according to an embodiment of the present invention. In FIG. 1, 1 is an axis. Reference numeral 2 denotes an armature iron core formed by stacking electric steel plates.
Is press-fitted and fixed. 3 is a winding. Reference numerals 4 and 5 denote end insulators A and B for insulating the armature core 2 and the winding 3 from each other. Reference numerals 6 and 7 denote shaft insulations A and B for insulating the shaft 1 and the winding 3 from each other. A commutator 8 is press-fitted and fixed to the shaft 1 and connected to the winding 3. Reference numeral 9 denotes an internal fan integrated with the wedge, which is provided with the same number of comb teeth as the number of slots.

The assembly of the armature assembly configured as described above will be described below. First, an armature core 2 is press-fitted and fixed to a shaft 1, and an end insulator A
4, B5 and shaft insulations A6, B7 are respectively press-fitted and fixed. Next, the commutator 8 is press-fitted and fixed to the shaft 1 and the windings 3 are formed in the respective slots of the armature core 2 into which the slot insulating paper is inserted, and the respective windings and the commutator 8 are connected. Then
Has a wedge function to prevent windings from jumping out of the lot
The inner fan 9 is press-fitted.

[0013]

As described above, according to the present invention, in the armature assembly having the inner fan, since the inner fan is positioned on the outer periphery of the winding, the dimension between the bearings after the inner fan is attached is not increased, and the wedge and the inner arm are not increased. Since the fan is integrated, the work of inserting wedges after winding can be eliminated. In this embodiment, the anti-commutator
The inner fan is attached to the side, but the same
It goes without saying that the effect is obtained.

[Brief description of the drawings]

FIG. 1 is a half sectional view of an armature assembly according to an embodiment of the present invention.

FIG. 2 is a half sectional view of a conventional armature assembly;

[Explanation of symbols]

 1 shaft 2 armature core 3 winding 4 end insulator A 5 end insulator B 6 shaft insulation A 7 shaft insulation B 8 commutator 9,29 inner fan 10 wedge

Claims (1)

(57) [Claims] An armature core and an outer peripheral portion of the armature core
A plurality of slots arranged in the slot and having an opening;
Winding wound around a slot through a slot insulating paper;
Cooling inner fan arranged on the outer circumference of the coil end
And the coil is inserted into the opening of the slot and pops out.
And a wedge for preventing the cooling of the inner fan and the
An armature assembly for an electric motor, wherein a wedge and a wedge are integrally formed .