JPS61207158A - Stator of motor - Google Patents

Abstract

PURPOSE:To easily with up poles with windings, by providing insulator sections provided with a plurality of salient pole-retaining sections on the outer periphery of a ring-formed section, and by arranging a plurality of the poles to be integrally embedded in the retaining sections, radially. CONSTITUTION:A motor is organized with a yoke member 1, a stator unit 2, a rotor 15, and an end plate 16. The stator unit 2 is of six pole type, and is provided with poles 4 and insulator members 20, and each winding 10 is provided for each pole 4. Then, the insulator members 20 have a ring-formed section for the center, and for the outer periphery of the ring-formed section, six pole-retaining sections are radially and saliently provided at equal intervals, and each pole 4 is embedded in each retaining section, to be integrally formed and retained. In this manner, the end sections of the pole-retaining sections are protruded toward a large outer space, and winding works can be easily carried out.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a stator for an electric motor, and more specifically, the present invention relates to a stator for an electric motor, and more specifically, a rotor and a plurality of poles arranged radially around the outer circumference of the rotor. This invention relates to an improvement in the stator structure of an electric motor, which is composed of a stator having windings.

<Prior art> Fig. 6 shows an example of a stator in this type of electric motor.
A plurality of poles 11 protrude from the inner surface of the yoke member 14 toward the center, and each pole 11 is provided with a winding 13 via an insulator 12.

FIG. 7 shows another example, in which each pole 11 is separate from the yoke member I4, and the winding I3 is individually applied via the insulator 12, and then the recess of the yoke member 14 is 141
The convex portion 111 of the pole member 2 is inserted and fixed therein.

<Problem to be solved by the invention> In the case shown in FIG. 6, the gap 11 between each pole 11 is
The winding work is difficult because the winding work must be done using the narrow space 14a on the inner surface of the yoke 14.
Particularly with a small electric motor, the work is extremely difficult and the workability is extremely poor.

The structure shown in Figure 7 solves this problem.
The winding work can be done on the pole 11 while it is separated from the yoke member 14, which makes the work very easy. However, in a small electric motor, the pole It itself is small, so the yoke member I
4 becomes difficult, and in this respect, the workability is extremely poor, and the structure cannot be said to be especially suitable for a small electric motor.

The present invention has been made with the object of solving these problems and making it easier to wind wires around poles.

<Means for Solving the Problems> In order to achieve the above-mentioned problems, the stator of the present invention is configured as follows. That is, by providing an insulator member with a plurality of pole holding parts protruding radially from the outer periphery of a ring-shaped part, and integrally molding a plurality of mutually independent poles embedded in each of the pole holding parts of this insulator member. The poles are arranged and held in a radial manner, each pole holding portion is wound with a wire, and a yoke member is fitted around the outer periphery of the insulator member to integrally connect and fix each pole and the yoke member.

(Function) Pole holding parts holding the poles are provided radially on the ring-shaped part, and the ends of the pole holding parts protrude toward a wide space outside.

Therefore, the winding work can be done from the outside without restrictions, making it extremely easy. After winding, all you have to do is fit the yoke member, making it possible to easily manufacture stators for small electric motors. becomes.

<Example> Hereinafter, an example of the present invention illustrated in the drawings will be described.

FIG. 1 is an exploded perspective view of a motor using a stator according to an embodiment, in which 1 is a yoke member, 2 is a stator unit, 15 is a rotor, and 16 is an end plate.

The yoke member l has a bottomed cylindrical shape with one side open, and is provided with a bearing 5 at the center, and a notch 101 for drawing out a lead wire and a fixing claw 102 for caulking are formed at the open end edge. The stator unit 2 is a six-pole type example, where 4 is a pole and 20 is an insulator member. The poles 4 are held by integral molding with an insulator member 20, 10 is a winding provided on each pole 4, and 11 is a power supply lead wire connected to these windings IO. The rotor I5 shows an example of a two-pole type, where 7 is a shaft and 8 is a two-pole type rotor.
is a permanent magnet. The permanent magnet 8 is fixed to the outer peripheral surface of a central member 9 made of resin or the like fixed to the shaft 7 with an adhesive or the like. The end plate 16 has a bearing 6 in the center,
A recess 161 is formed on the outer periphery, and the structure is such that it is caulked and fixed by the fixing claw 102 of the yoke member l.

The pole 4 and the insulator member 20 are shown in FIGS. 2 and 3.
The details of the arrangement and shape are shown.

The six poles 4 are independent from each other and are arranged radially at equal intervals on the same circumference, and grooves 401 are formed in the circumferential direction on both upper and lower surfaces of each pole 4, and grooves 401 are formed in the inner circumference. Projections 402 are formed on the top and bottom of the circumferential surface, respectively. The insulator member 20 is made of insulating resin, etc., and has a ring-shaped part 201 as the center, and six pole holding parts 202 are protruded radially at equal intervals on the outer periphery of this ring-shaped part 201. has been done. The poles 4 are held by being embedded and integrally molded into each of these pole holding parts 202, and are prevented from being removed in the radial direction by the grooves 401, and are firmly integrated with the insulator member 20. There is. FIG. 3 shows the insulator member 20 integrally molded with the poles 4, and each pole 4 is held in a radial arrangement, with both the inner and outer end surfaces exposed. 204 is a flange formed at the outer peripheral end of the pole holding portion 202.

The winding wire 10 is wound from the outside in this state, and since the pole holding part 202 protrudes toward a wide space outside, the winding wire 10 can be wound using a normal winding machine without being subject to space constraints. able to perform work. The pole holding part 202 covers the circumference of the pole 4 and holds the pole 4 and the winding 10.
The ring-shaped portion 201 and the flange 204 constitute a bobbin, and the flange 204 prevents the winding 10 from being removed.

After manufacturing the stator unit 2 in this way, the yoke member l
The stator unit 2 is press-fitted to obtain the stator 3 shown in FIG. 4, and the rotor 15 is further inserted and the end plate 16
The assembly work is completed by fitting and caulking the fixing claw 102. The inner end surface of each pole 4 must maintain a good roundness so that it faces the magnet 8 of the rotor 15 disposed therein at a predetermined distance. It is also necessary that the outer end surface maintains a good roundness and is tightly connected to the yoke member 1 fitted on the outer periphery by press-fitting or the like with a certain contact pressure. Therefore, the dimensions and shapes of each part are accurately processed and molded to satisfy these conditions.

FIG. 5 shows an example of the connection of the windings 10 of the stator 3 shown in the embodiment, in which the opposing windings 10a, IOa or fob, 1
0b or lOc, 10c are connected in series. The three adjacent ones are connected to one terminal of the power source via the changeover switch 17, and the remaining three adjacent ones are connected to the other terminal of the power source.

Since the rotor 15 is of the two-pole type as described above, the fifth
In the case of the connection as shown in the figure, the rotor 15 is moved in the direction of the energized winding 10 according to the switching position of the changeover switch 17.
It rotates in 0° increments and operates as a 3-position stop actuator for switching hydraulic circuits, for example. Note that this application is just one example, and the present invention can be applied to stators of various AC or DC motors, such as ordinary motors and stepping motors that rotate continuously in the same direction.

<Effects of the Invention> According to the present invention, the poles are integrally molded with a pair of insulator members and arranged radially, and the winding work can be performed from the outside without restrictions, so the winding work is easy and compact. Precision electric motors can be manufactured easily, and special winding machines are no longer required. In addition, after the winding is completed, the magnetic circuit of the stator is formed by fitting the yoke member to the outer periphery of the insulator member that is integrated with the pole, which simplifies the assembly of the stator. Since the holding part can insulate between the pole and the winding, there is no need for an insulating sheet or bobbin, which also simplifies assembly and has the advantage of reducing production costs.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view of one embodiment of the present invention, Fig. 2 is a perspective view of a pole of the same embodiment, Fig. 3 is a perspective view of the insulator member of the same above, and Fig. 4 is a view from the axial direction of the same. cross-sectional view,
FIG. 5 is a wiring diagram of the embodiment, and FIGS. 6 and 7 are cross-sectional views of the conventional example as seen from the axial direction. ! ...Yoke member, 2...Stator unit, 3...
・Stator, 4...pole, IO...winding, 15...
・Rotor, 20... Insulator member, 201...
- Ring-shaped part, 202...pole holding part.

Claims (1)

[Claims] (1) A stator for an electric motor consisting of a combination of a rotor and a stator in which a plurality of poles are arranged radially around the outer circumference of the rotor and wires are wound around these poles, and the stator has a ring-shaped part. An insulator member having a plurality of pole holding parts protruding radially from the outer periphery, and a plurality of mutually independent poles arranged radially by being embedded in each pole holding part of this insulator member and integrally molded. , comprising a winding wire applied to each pole embedded in each pole holding portion, and a yoke member fitted to the outer periphery of the insulator member and integrally coupled and fixed to each pole. Stator of electric motor.