JPH0715328Y2 - Kumatori wire wheel type electric motor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Industrial Field of the Invention The present invention relates to a shading wire wheel type electric motor used for a fan motor or the like.

2. Description of the Related Art Conventionally, the Kumabe wire loop type electric motor has been regarded as a low-cost electric motor.

Hereinafter, the above-mentioned conventional shading wire wheel type motor will be described with reference to the drawings.

FIG. 7 is a perspective view of a conventional shading wire wheel, FIGS. 8 and 9 are perspective views of a main portion in which the shading wire wheel is attached to an iron core, and FIG. 10 is a drawing of the shading wire wheel portion after coil winding. Is.

In the figure, 11 is an iron core, 12 is a lower mouth insulating paper, 13 is a coil, and this coil 13 is insulated by the lower mouth insulating paper 12 and wound on the iron core 11. Reference numeral 15 is a shading wire wheel, which is formed by bending a copper plate, and is inserted into a projection 11c formed by a slot 11a and a groove 11b of an iron core 11 formed by stacking iron plates, and then the shading wire wheel 15 is bent (folded). The core 15 is fixed by welding the portion 15a) and the connecting portion 15b. In such a conventional shading wire wheel type motor, since the shading wire wheel 15 is welded, the welded portion 15b rises, and the insulation distance B dimension from the coil 13 is shortened. The insulation distance B was secured by increasing the distance from 11.

Problems to be Solved by the Invention However, in such a configuration, the size of the coil 13 becomes long, which causes an increase in the amount of the coil and a deterioration in characteristics. If the coil 13 cannot be made high, it is necessary to cut the raised portion of the welded portion 15b of the shading wire wheel 15 to secure the insulation distance B. Further, depending on how the shading wire wheel 15 is connected, There was variation in the connection due to gaps in the portion 15b, which adversely affected the characteristics.

As described above, welding the shading wire wheel 15 causes problems such as deterioration of characteristics and an increase in processing cost and material cost.

In view of the above problems, the present invention provides an inexpensive and high-quality shading wire wheel type electric motor that can easily fix the shading wire wheel to the laminated iron core.

Means for Solving the Problems In order to solve the above-mentioned problems, the Kumabe wire loop electric motor of the present invention comprises an iron core having a slot, a coil wound in the slot, and a groove provided on a side portion of the slot of the iron core. A protrusion formed and a substantially ring-shaped shading wire wheel attached to the projection, and one side of the shading wire wheel located in the groove is longer than one side of the slot and one side of the slot. Is approximately equal to the thickness of the iron core, and the groove is provided with a concave portion into which a part of the long side is curved and fitted by pressurizing the other two opposite sides.

Advantageous Effects of Invention The present invention eliminates the need for welding the shading wire wheel due to the above-described configuration, and since the curved portion of the long side is supported by the concave portion provided in the groove, the iron core can be securely fixed by the shading wire wheel.
Since the short side is not deformed by pressure, there is no change in the area of the slot in which the coil is installed, and therefore the characteristics do not deteriorate, and the other two pressed sides are in close contact with the upper and lower end faces of the iron core. It is possible to secure the insulation distance with.

Example Hereinafter, a kumadori wheel type motor of one example of the present invention,
A description will be given with reference to FIGS. 1 to 6.

FIG. 1 is a perspective view of a finished stator of a Kumabe wire ring type motor according to an embodiment of the present invention, in which 1 is an iron core, 2 is lower-end insulating paper, 3 is a coil, 4 is a wedge, and 3 is a coil. Is
It is wound around the slot 1a of the iron core 1 while being insulated by the lower-end insulating paper 2 and the wedge 4. 5 is a kumadori wire wheel with a long side and a short side. This kumadori wire wheel 5 is a slot 1a of the iron core 1.
And a groove 1b which is mounted on a protrusion 1c, and the long side 5a is located in the groove 1b and is curved to form a recess in the groove 1b.
The curved part is inserted in 1d. In addition, the pipe material is cut to form the shading coil 5.

The operation of the kumaduki wheel type motor configured as described above will be described.

First, regarding the kumadori wheel 5, it is formed into a substantially ring shape in order to eliminate welding, and is made by cutting a pipe material as shown in FIG. The length Ha of one side (long side 5a) in the direction of being located in the groove 1b of the iron core 1 of the shading coil 5 is set longer than the length Hb of the other side (short side 5b). After inserting into the protrusion 1c of the iron core 1 as shown in FIG. 5, pressure is applied in the stacking direction to bend the long side 5a of the shading coil 5 and bend the concave portion 1d provided in the groove 1b of the iron core 1 into the curved portion. , And the shading wire wheel 5 is fixed to the iron core 1. As shown in FIG. 3, the long sides 5a and the short sides 5b of the shading coil 5 have lengths Ha and Hb of the stacking thickness of the iron core 1 and the projection 1c into which the shading coil 5 is inserted, as shown in FIG. It may be determined by the width, and the length Hb of the short side 5b is made equal to the laminated thickness of the iron core 1 so as not to bend even if pressure is applied in order to maintain the slot area for mounting the coil 3.

FIG. 6 is an enlarged view of the portion of the shading wire wheel 5 and the coil 3 in FIG. 1, and the shading wire wheel 5 does not rise due to welding, and the insulation distance A from the coil 3 is easily secured.

As described above, the present invention eliminates the need for welding the shading wire wheel and the cutting process after welding, which facilitates the assembly and improves the productivity.

As described above, according to the present invention, one side of the shading coil wheel located in the groove is made longer than the one side located in the slot, and the long side is curved, and the concave portion into which the curved portion of the long side is fitted. By installing the groove in the groove, there is no dropout of the shaving wire ring, the short side is not deformed by pressure and the coil mounting area of the slot is secured, so the characteristics do not deteriorate and the other two sides are pressed up and down the core. Since the insulation distance from the coil can be easily secured by closely contacting with the end face and the dimension of the coil can be shortened, it is possible to provide an inexpensive and high-quality shunt-wound wheel motor.

[Brief description of drawings]

FIG. 1 is a perspective view of a finished stator of a Kumabe wire ring type motor according to an embodiment of the present invention, FIG. 2 is a perspective view of a pipe material for a Kamabe wire ring of FIG. 1, and FIG. 3 is a pipe of FIG. Fig. 4 is a partial cutaway view of the kumadori ring of Fig. 2 inserted in the iron core. FIG. 6 is an enlarged view of the shading wire wheel portion of FIG. 1, FIG. 7 is a perspective view of the conventional shading wire wheel before processing, and FIG. 8 is a perspective view of the main part of the iron core equipped with the conventional shading wire wheel. FIG. 9 is a perspective view of an essential part of an iron core obtained by welding the kumadori wire wheel of FIG. 8, and FIG. 10 is a side view of an essential part of a conventional kumadori wire wheel type electric motor. 1-iron core, 1a-slot, 1b-groove, 1c-projection, 1d-recess, 3-coil, 5-shade coil, 5a
…… Long side, 5b …… Short side.

Claims (1)

[Scope of utility model registration request] 1. An iron core having a slot, a coil wound around the slot, a protrusion formed by a groove provided in a slot side portion of the iron core, and a substantially ring-shaped member attached to the protrusion. With a shading wire wheel, one side of the shading wire wheel located in the groove is longer than one side located in the slot, and one side located in the slot is approximately equal to the thickness of the iron core, and the other two opposite sides are A kumad wire-ring type electric motor having a concave portion provided in the groove so that a part of a long side thereof is curved and fitted by being pressed.