CN2271770Y

CN2271770Y - Permanent-magnetic electric machine

Info

Publication number: CN2271770Y
Application number: CN 96236233
Authority: CN
Inventors: 王腴田
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-08-23
Filing date: 1996-08-23
Publication date: 1997-12-31
Anticipated expiration: 2006-08-23

Abstract

The utility model relates to a permanent-magnetic electric machine. Pole teeth of an iron core of the utility model are separated type pole teeth formed by the overlapping of punched I-shaped silicon-steel sheets, both sides of the pole teeth are provided with flanges, and each pole tooth is fixed on a magnetic yoke through a press plate. Because the pole teeth are separated, conducting wires can be firstly wound on the pole teeth by a wire winding machine, and then the pole teeth are fixed on the magnetic yoke by the press plate. Therefore, the utility model not only can enhance the utilization rate of the silicon-steel sheets, but also use a wire winding process to replace a complicated wire inlaying process so as to reduce wire consumption of windings and simultaneously reduces copper resistance consumption.

Description

Magneto

The utility model belongs to machine field, specifically a kind of magneto.

Existing magneto has radial air gap formula and axial air-gap type (being disc type).The former iron core is to become with the gear ring shape silicon steel sheet closed assembly face that stamps out, so the utilance of silicon steel sheet is lower.In addition, the iron core of this form is essential when placing winding coil to adopt wire insertion technology, and the production efficiency of this technology is lower, technological operation is complicated, and also bigger with the line amount.The latter's iron core be with the band coil of strip around forming, its production method has two kinds: first kind be earlier will band steel drift extrusion utmost point tooth profile of tooth, be wound into iron core again.Obviously, the manufacturing process of this structure is complicated, particularly when the band steel drift is pressed profile of tooth, requires the space width strictness by certain incremental increase.Second kind as the disclosed disc type electric machine of Chinese patent CN2112222, is to wind utmost point tooth and annular yoke respectively with the band steel, with screw utmost point tooth is fixed on the yoke then.Therefore contact not closely between utmost point tooth and yoke, screw and utmost point between cog are gapped in addition, and utmost point tooth is less in the work area at axial air-gap place, and leakage field is bigger, thereby has limited the raising of electric efficiency.

Task of the present utility model provide a kind ofly be convenient to make, efficient is higher and can save the magneto of material.

Task of the present utility model is to realize in the following way: the magneto that is provided has a winding iron core, coil is wrapped on this iron core utmost point tooth, wherein the utmost point tooth of iron core is the separate type utmost point tooth that is become by the silicon steel sheet closed assembly, these utmost point tooth both sides are provided with flange, and each utmost point tooth is connected on the yoke by the pressing plate that is pressed on the utmost point tooth flange.

Above-mentioned iron core utmost point tooth can be the T font, but is preferably I-shaped.Because utmost point tooth separates, thus can utilize coil winding machine earlier lead to be wrapped on the utmost point tooth, and then utilize pressing plate that utmost point tooth is fixed on the yoke.

The utility model is owing to adopted separate type lamination utmost point tooth, not only can improve the utilance of silicon steel sheet, and available wire winding comes the wire insertion technology of replace complex, formed winding coil is tightr, thereby that has reduced winding uses the line amount, has also reduced steel resistance loss simultaneously.In addition, the upper flange of I-shaped utmost point tooth can make utmost point tooth increase at the area at air gap place, has improved the utilance of magnetic energy from face.

For some low power magnetoes, the utility model can be cylinder iron or the cast steel motor casing come the aforesaid iron core yoke of double as, like this, not only make structure simpler, but also can reduce manufacturing cost.

Below in conjunction with accompanying drawing content of the present utility model is illustrated.

Fig. 1 is the structure chart of the utility model disc-type permanent magnet motor.

Fig. 2 is a kind of johning knot composition between the utility model utmost point tooth and yoke.

Fig. 3 is the vertical view of the utmost point tooth of a kind of I-shaped silicon steel sheet closed assembly of the utility model.

Circle 4 is vertical views of the utmost point tooth of the another kind of I-shaped silicon steel sheet closed assembly of the utility model.

Fig. 5 is a kind of structure chart of the utility model pressing plate.

Fig. 6 is the another kind of structure chart of the utility model pressing plate.

Fig. 7 is the another kind of johning knot composition between the utility model utmost point tooth and yoke.

Fig. 8 is the cutaway view at Fig. 7 A-A place.

Fig. 9 is the structure chart of the utility model radial air gap formula magneto.

As shown in Figure 1: motor mainly is made up of motor casing 1, rotor 2, stator 3 and motor shaft 4.Motor casing 1 is made up of thimble 11, left end cap 12 and right end cap 13.Rotor 2 is made up of dish type yoke 21 and permanent magnet 22.Stator 3 is made up of iron core 31 and winding coil 32, and wherein the utmost point tooth 33 of iron core 31 is I-shaped, is become by some I-shaped silicon steel sheet closed assembly faces.Above-mentioned iron core utmost point tooth such as can adopt to become as shown in Figure 4 shape at the I-shaped silicon steel sheet closed assembly of width, also can adopt the I-shaped silicon steel sheet closed assembly one-tenth shape as shown in Figure 3 that does not wait width, to reduce the length of every circle coil.Simultaneously as the yoke of iron core 31, iron core utmost point tooth 33 is connected in utmost point tooth 33 on the right end cap 13 by pressing plate 34 this example with the right end cap 13 of motor casing.All the other numberings among the figure: 14,15-bearing.

Fig. 2 has provided a kind of syndeton between utmost point tooth and yoke.The size of I-shaped utmost point tooth 33 upper surfaces and the cross section of rotor permanent magnet adapt, so that reduce leakage field as far as possible.Two side flanges 35 of utmost point tooth 33 lower ends are used to place pressing plate 34, and by screw 36 pressing plate 34, utmost point tooth 33 and yoke 37 are fixed together.Yoke 37 can be provided with separately, when power of motor hour also can substitute with motor casing, as shown in Figure 1 substitute yoke with the motor casing right end cap.Winding coil 32 usefulness coil winding machines are wrapped on the utmost point tooth 33.

For disc type electric machine, utmost point tooth support can be a shape shown in Figure 5, and promptly pressing plate 38 is the disk of opening, and each utmost point tooth inserts among the opening 38a of pressing plate earlier, with screw they is fixed on the yoke then.Utmost point tooth support can also be a shape shown in Figure 6, and promptly pressing plate 39 is the split type structure of fan shape, and utmost point tooth is stuck in the dissection type opening 39a place of two pressing plates.Number among the figure: 40,41-bridge screw through hole.

For some radial air gap formula motor, also can adopt Fig. 7, mode shown in Figure 8 being connected between utmost point tooth and yoke: the lower end of I-shaped utmost point tooth 71 embeds in the groove 73 of iron core yoke 72, with pressing plate 74 and screw 75 utmost point tooth 71 and yoke 72 is fixed together then.

The structure of radial air gap formula motor of the present utility model is as shown in Figure 9: utmost point tooth 91 is I-shaped, and pressing plate 92 is an arc shape board, motor casing 93 double as yokes, and each utmost point tooth 91 also is to be connected on the motor casing 93 of double as yoke by pressing plate 92.Number among the figure: 94-motor shaft, 95-permanent magnet, 96-rotor core, 97-every the magnetic filler, 98-magnetic conduction pressing plate, 99-coil.

Claims

1, a kind of magneto, has a winding iron core (31), coil (32) is wrapped on this iron core utmost point tooth (33), it is characterized in that said iron core utmost point tooth (33) is the high formula utmost point of the branch tooth that is become by the silicon steel sheet closed assembly, these utmost point tooth (33) both sides are provided with flange (35), and each utmost point tooth is connected on the yoke (37) by the pressing plate (34) that is pressed on the utmost point tooth flange (35).

2, magneto as claimed in claim 1 is characterized in that said iron core utmost point tooth (33) is for I-shaped.

3, magneto as claimed in claim 1 or 2 is characterized in that cylinder iron or the cast steel motor casing comes the preceding fast iron core yoke (37) of double as.