JPH02261028A - Motor - Google Patents

Abstract

PURPOSE:To improve the winding property of a coil around a stator by a method wherein a motor is provided with a stator, consisting of a yoke and a plurality of magnetic pole pieces, projected by forming slots, a coil, wound into slots so as to turn around a rotor in the shape of straight lines, and poles consisting of triangular pillars while the coil is wound in parallel to the slanted surfaces of the triangular pillars. CONSTITUTION:The magnetic pole pieces 19 of a stator are provided with poles 21, consisting of triangular pillars having the summit at the side of a stator ring 18, at the tip end thereof while a coil 26 is wound around a stator 15 linearly so as to cross the surface of a rotor upwardly and downwardly whereby the winding direction of the coil 26 becomes parallel to the slanted surfaces of the poles 21 and, therefore, the series winding property may be improved, the peripheral length of the coil 26 may be shortened and the amount of the coil 26 may be reduced remarkably. According to this method, inflation from both ends of the stator toward the outside may be reduced, and a motor, reduced in after working, improved in assembling property and good in the winding property of the coil around the stator, may be obtained.

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to an electric motor in which a rotor is housed in a stator consisting of a split core, and a coil is wound around the rotor. .

[Conventional technology]

FIG. 7 is a perspective view showing a conventional electric motor disclosed in, for example, Japanese Unexamined Patent Publication No. 58-33945, and in the figure (1)
is an iron core plate in which a magnetic pole piece (4) consisting of a yoke (2) and a magnetic pole (3) is integrally formed, (5) is a stator in which this iron core plate is laminated, and (6) is a slot of this stator. A winding wire (not shown) is housed therein. (7) is this slot opening.

A conventional electric motor is constructed as described above, in which a plurality of iron core plates (1) are laminated to form a stator (51).Then, windings are wound around magnetic pole pieces (4) by an insert method. , is housed in the slot (6), and is housed together with a rotor (not shown) in the outer casing of a motor (not shown).

[Problem to be solved by the invention]

In the conventional electric motor as described above, the yoke (2) and the magnetic pole piece (4) are integrally formed, and the magnetic pole (3) is connected to the stator (5).
Since the winding method is an insert type due to the shape that protrudes inward, the outer circumference of the winding part wound around the magnetic pole piece (4) becomes longer, and the extra wire is drawn outward from both ends of the stator (5). There was a problem that protrusion occurred and post-processing such as forming, face treatment, and lacing was required after winding.

This invention was made to solve the problem,
The purpose of the present invention is to reduce the protrusion of a stator from both ends to the outside, and to obtain an electric motor that requires less post-processing and is easy to assemble.

[Means to solve the problem]

This invention was made to solve the problem,
A stator comprising a yoke portion, a stator ring provided concentrically with the yoke portion, and a plurality of magnetic pole pieces protruding from the stator ring by forming slots, and a stator ring provided within the stator ring. The stator has a rotor fitted into the rotating shaft, and a coil wound around the thrower 1 so as to go around the rotor in a straight line. The pole is a triangular prism whose apex is on the stator ring side.

[Operation] In the present invention, the triangular surface of the pole guides the coil when it is wound around the slot.

〔Example〕

FIG. 1 is a perspective view of a stator showing an embodiment of the present invention, FIG. 2 is a perspective view of the stator and rotor combined, and FIG. 3 is a perspective view of the stator and yoke portion combined. , FIG. 4 is a perspective view of the insulating wedge mounted on the stator, and FIG. 5 is a cross-sectional view of the stator. In the figure, (14) is a yoke portion forming the outer periphery of the stator (15). Iron core plate (16
) are laminated, and a plurality of notches (17) are provided on the inner periphery. (18) is a stator ring provided concentrically with this yoke part, and (19) is a plurality of magnetic pole pieces that form slots (20) and protrude from this stator ring. are laminated to form a stator (15). (21) is a pole provided at the tip of this magnetic pole piece, which is made of a triangular prism with its apex on the -F stator ring (18) side, and is made of synthetic resin, for example, on the outer wall, upper and lower sides of the stator (15). It is integrally molded with an insulating part (22) that covers the end face.

(23) is a rotor provided within the stator (15), into which a rotation shaft (24) is fitted. (25) is a cap that is attached to the rotor through the rotating shaft (24), and (26) is a coil, which consists of a main coil (27) and an auxiliary coil (28). (29) is the rotation axis (2
4) A bearing that is press-fitted into the bearing, such as a pole bearing.

(30) is an insulating wedge that insulates the coil (26) and the yoke part (14).
) and the triangular bottom part of the pole (21) (31
) is fitted.

The electric motor constructed as described above is assembled by inserting the rotor (23) into the stator (15) provided with the insulating part (22) as shown in FIG.
) is attached. Next, as shown in Figure 3, the main coil (2
7) and an auxiliary coil (28).
For example, a flyer type winding machine is used to wind a predetermined number of turns between the slots (20) of the stator (15) so that the wires extend around the surface of the rotor (23) in a straight line. Coil (2
6) is press-fitted into the yoke part (14) through the notch part (17), and the coil (26) and the yoke part (14) are connected using the pole (21) as a guide. An insulating wedge (30) is fitted into the gap (31) between the triangular bottom portion of the pole (21) and the yoke portion (14). Thereafter, a power lead wire (not shown) is connected to the terminal of the coil (26) by solder, and an insulating tube (not shown) is inserted into this connection and fixed with a thread tie.

Furthermore, after an insulating face (not shown) is dropped onto the coil (26) J2 and cured by heating, a bearing (29) is press-fitted into a predetermined position of the rotating shaft (24).

In this way, a pole (21) consisting of a triangular prism whose apex is on the stator ring (18) side is provided at the tip of the magnetic pole piece 19) of the stator (15), and the pole (21) is arranged to cross the rotor (23) surface up and down. By winding the coil (26) around the stator (15) in a straight line, the winding direction of the coil (26) and the pole (21) can be adjusted.
) are parallel, the series winding properties are improved, the circumferential length of the coil (26) is shortened, and the amount of the coil (26) is significantly reduced. Furthermore, a wedge (3
By inserting the pole (21), insertability can be improved and fixation can be ensured due to the guiding effect due to the shape of the pole (21).

In the present invention, the pole (21) has been described as a triangular prism, but as shown in FIG. 6, it is protruded on the stator ring (18) side. For example, a V-shaped piece made of a synthetic resin flat plate (
Even if 32) is used, the same effect as in the above embodiment can be obtained.

〔Effect of the invention〕

As explained above, this invention provides a stator comprising a yoke part, a stator ring provided concentrically with the yoke part, and a plurality of magnetic pole pieces protruding from the stator ring by forming slots. and provided within the stator ring,
The stator is equipped with a rotor fitted through a rotating shaft and a coil wound around a slot so as to go around the rotor in a straight line. By providing a pole made of a triangular prism with the ring side as its apex, the winding direction of the =1 coil is parallel to the triangular slope of the pole, which improves series winding properties and improves the winding properties of the coil on the stator. It has the effect of improving

[Brief explanation of drawings]

FIG. 1 is a perspective view of a stator showing an embodiment of the present invention, FIG. 2 is a perspective view of the stator and rotor combined, and FIG. 3 is a perspective view of the stator and yoke portion combined. , FIG. 4 is a perspective view of the insulating wedge mounted on the stator, FIG. 5 is a sectional view of the stator, FIG. 6 is a perspective view of another embodiment of the present invention, and FIG. 7 is a conventional It is a perspective view showing an electric motor. In addition, (14) is a yoke part, (15) is a stator, and (18) is a stator.
) is the stator ring, (19) is the magnetic pole piece, (20) is the slot, (21) is the pole, (23) is the rotor, (24)
is a rotating shaft, and (26) is a coil.

Claims (1)

[Claims] A stator comprising a yoke portion, a stator ring provided concentrically with the yoke portion, and a plurality of magnetic pole pieces protruding from the stator ring by forming slots, and a stator ring provided within the stator ring. The stator is provided with a rotor that is fitted into a rotating shaft, and a coil that is wound in a slot so as to go around the rotor in a straight line. , an electric motor characterized by having a pole made of a triangular prism whose apex is on the stator ring side.