JPS5889054A - Rotary electric machine - Google Patents

Abstract

PURPOSE:To reduce the production cost of a rotary electric machine by continuously arranging conductors on a strip insulator at the prescribed pitch in zigzag state laterally and longitudinally, rounding the arranged conductors in a cylindrical shape, thereby forming a stator coil. CONSTITUTION:A thin conductor foil is bonded on a thin strip insulator 12-1, a linear conductor 12-2 arranged by photoetching in a zigzag stage is formed laterally and longitudinally from the foil, and the insulator 12-1 is wound in a cylindrical shape so as to become an outer diameter of the value equal to the inner diameter of a stator core 11, thereby forming a stator coil 12. This coil is fixed to the inner peripheral surface of the core 11, and a rotor 17 is disposed oppositely through an air gap 19 to the coil 12.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a rotating electrical machine, particularly a rotor equipped with a cylindrical permanent magnet, and a rotor equipped with a cylindrical permanent magnet. The present invention relates to an improved rotating electrical machine comprising nine stators and stator windings arranged opposite to each other via jt.

The rotating electric machine of the present invention includes a rotor equipped with a cylindrical permanent magnet, a stator arranged opposite to the permanent magnet through an air gap, and a conductor arranged on a strip-shaped insulator at a predetermined pitch in the width direction. The stator windings are arranged continuously in a zigzag pattern in the longitudinal direction and are formed by rolling the coils into a cylindrical shape.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to the drawings, the configuration of this rotary electric machine according to the prior art and embodiments of the rotary electric machine according to the present invention will be described below.

Figure 1 shows a nine electric bridge equipped with conventional permanent magnets in the rotor, where l is the stator core, 2 is the stator winding, 3 is the stator housing, 4.5 is the end bracket, 6 is the bearing, and 7 is the stator core. 8 is a rotor made of a permanent magnet, 8 is a rotor shaft, 9 is an air gap between the stator and the rotor, and IO is a 9th element provided on the end bracket 6 for detecting the magnetic flux from the permanent magnet of the rotor 7. It is a magnetic detector.

As shown in Fig. 1(b), a plurality of, for example, eight magnetic poles 1-2 protrude radially toward the center from the outer part of the stator core l, and the pole piece at the tip is empty. 1! J
It faces the outer circumference of the rotor 7 through 9t, and each magnetic pole 1
A groove 1-3 is provided between the pole pieces of -2, and each magnetic pole 1-2 has a winding 2-1 of 41! ! The windings 2-1 are connected to each other to form a plurality of phases.

The winding 4I of each phase is connected to the power source via an energization control device (not shown) controlled by the output of the magnetic detector 10, and is connected to the rotor 7.
The windings 1i[2-IKli] corresponding to the magnetic poles of the permanent magnets are then energized to continuously generate rotational force in a fixed direction and operate as an electric motor.

In the conventional electric motor shown in Fig. 11111, a large number of magnetic poles 1-2 are arranged from an iron plate as shown in Fig. 1(b), the iron core is punched out, a large number of grooves are stacked, and each magnetic pole 1-2 is
There is a defect that requires a large number of skilled personnel to wind the winding 2-11 and connect the terminals of the winding 2-1 to several phases, which increases the production cost.

In the present invention, instead of winding the ninth stator winding 2-1 one by one to eliminate this drawback, a thin conductive foil is placed on a thin strip-shaped insulator 12-10 as shown in Fig. 1112. The pasted conductor foil is then photo-etched to form conductors 12-21 arranged in a zigzag pattern in the width and length directions.
- form and apply this band-shaped insulator to the inner diameter D6 of the stator core 11.
One stator winding is wound into a cylindrical shape so as to have an outer diameter equal to The rotors 1 and 1 are arranged to face each other with a gap 19 interposed therebetween.

Further, the stator core 11 is formed by punching hollow disks having holes large enough to accommodate the stator windings 12 from iron plates and stacking them.

The fixed pre-winding in the present invention @12Fi is manufactured by processing the conductor foil t pasted on a thin strip-shaped insulator using a photo-etching method, so if the original plate is manufactured accurately, then a large number of stator windings can be made with exactly the same dimensions. Since it can be easily produced, it does not require much manpower for connections between windings, etc.

In another embodiment of the invention, stator winding 12 is constructed as shown in FIG.

In this embodiment, the width of the band-shaped insulating material 22-1 is slightly longer than twice the axial length of the stator core 11, and the winding wires are placed above and below the center line M, which divides the width into y2. The conductors 22-2 and 22=3 forming the 22-2 and 22-3 are respectively arranged in a continuous isosceles triangle shape, that is, the four fixed windings start from the terminals ab, cd as shown in FIG. , ・f, gk and the isosceles triangular chevron are continued to 1 of the insulator 22-1. From this end, enter the lower half of the center -M and the center line M is continued through the isosceles triangular chevron to the center line M. A single continuous conductor that returns to the upper side via parallel straight sections is arranged in a plurality of locations, and the terminal end is connected to the terminal B to form the conductor. All of the isosceles triangles have the same shape, and the length of the base where the ends of the two sides touch is equal to the pitch of one pole of the opposing rotor, and the arrangement of the upper triangle and lower triangle is circular by the length T of the base. Slide it in the circumferential direction. Next, as shown in FIG. 4(b), the strip-shaped insulator 22-1 is bent into two KIR1+ parts so as to overlap the upper conductor 22-2 and the lower conductor 22-3, extending over the center line MK.

In Figure 4 (b), when a current is passed through the stator winding in the direction of terminals A → B, the current flows through the chevron-shaped conductor part as shown by the arrow, and the relationship between all the conductor parts and the permanent magnet is A force in the same direction acts to move the rotor 27 in the direction of the arrow in FIG. 4(b)'. However, if the rotor 27 rotates by one pitch of the magnetic pole (B), the polarity of the magnet will be reversed, so if you switch the direction of current flowing through the stator winding from terminal B to A at this position, it will rotate in the same direction. Power is generated continuously and functions as an electric motor. The means for switching the direction of the current flowing through the winding at the position where the polarity of the opposing magnets changes may be a means using a commutator and a brush, a means using an electronic switch, or the like.

The conductor arrangement shown in Figures 4(a) and (b) is for the case where the rotor has eight poles, but the basic form of this arrangement is as shown in Figure 4(c). . That is, the isosceles triangle q, which is equivalent to one pinch of a permanent magnet, whose base lengths are opposite to each other on both sides above and below the center line MO, is moved and placed, and the lower ends of each angled triangle are connected by a straight line part -2q parallel to the center line. If the shape of the figure is the smallest unit, and the parts including the straight parts p and q are provided at the front and rear parts, any number of diagonal parts between them can be provided as needed. For example, Figure 4 (&).

In the example shown in (b), the number of poles of the permanent magnet of the rotor is 8, and the conductors of the stator opposing this are arranged as many times as they go around the cylinder around the rotor consonant, but this is done multiple times. It is also possible to easily increase the number of windings per pole by providing the required number of chevron-shaped diagonal parts. Also, Fig. 4(a), (
In b), the straight part p.

q are both placed below the center IIM, but as shown in Fig. 4 (
, ), the effect is the same even if they are placed above or below the center line M. Figure 4(d) shows the one shown in Figure 4(a) folded along the center line MK and stacked on top and bottom.
・) is an end view of FIG. 4(d) seen from the direction of the arrow, and the upper conductor 22-2 and the lower conductor 22-3 are connected to the connecting portion
It is characterized in that it is connected by 2-4 and there is no connecting part in the middle.0 Figure S shows another embodiment of the present invention configuring a multi-phase stator winding. As shown in FIG. 5, the second phase winding φ1 is moved from the first phase winding φ1 by seven pitches of the pole pinch of the opposing permanent magnet. In this way, two sets of windings having a phase of 90 degrees in electrical angle can be constructed. Also, as shown in Fig. 6, φImdtaφ
If the winding groups 3 and 3 are arranged by moving the opposing magnetic poles by ten pitches, three sets of windings can be constructed, and in the same manner as above, any polyphase winding can be constructed. be able to.

In another embodiment of the present invention, as shown in FIG. 7, in addition to the motor windings φ, to φn, an independent wave number generator winding FG may be provided.

In yet another embodiment of the present invention, as shown in FIG. 8, a conductor portion 24 for attaching a magnetic detector is provided at the end of the strip-shaped insulator at a position in a fixed relationship with the winding. The accuracy of the mounting position of the device can be increased.

In addition, as shown in FIG. 9, the width of the strip-shaped insulator is partially widened, and a terminal 23 and a wiring portion 25 for attaching electronic components constituting the energization control device that drives the motor are placed in a position that does not overlap the windings. The conductor portions 26 and 27 that connect the winding terminal 23 and the energization control device can also be formed integrally.

In the above embodiment, the stator winding is formed into an isosceles triangular shape, but it goes without saying that it may be formed into a rectangular or arcuate shape.

[Brief explanation of the drawing]

Figure 1 (,) is a longitudinal sectional front view of a conventional electric motor;
) t;j Its vertical side view, FIG. 2 is the stator 4 of the present invention.
111, FIG. 3(&) is a longitudinal sectional front view of the rotating electrical machine of the present invention, FIG. 3(b) is its longitudinal sectional view, and FIG. 4(a)
), (b) is a clear diagram of the stator winding OvL in another embodiment of the present invention, FIG. 4(b)' is an explanatory diagram of the rotor,
4(,) to (·) are explanatory diagrams of the basic form of the stator winding, respectively, and FIGS. 5 to 9 are explanatory diagrams of the stator winding in still other embodiments of the present invention, respectively. 3... Stator housing, 4.5... End bracket, 8... Rotor shaft, 11... Stator core, 12
... Stator winding, 17 ... Trochanter, 19 ... Gap, 12-1 ... Insulator, 12-2 ... Conductor. Procedural amendment (method) Showa B Fugu 1-April 2711 Commissioner of the Japan Patent Office Shima 1) Haruki Tono 1, Indication of case Patent application 1988-1418!1
211 No. 2, Title of the invention Rotating electrical machine 3, Relationship with the case of the person making the amendment Patent applicant name Name Japan T-Bo stock stock denomination, Agent 6, Subject of amendment (1) @Details issued @0vIPliA1 vsoa (to) A brief explanation of the same drawing @ column O (2) Drawing (Fig. 4) 7. Contents of amendment (1) Specification drawing 7 purchase 111m1lor (blj is corrected as "σ month." (2) Page 11 of the specification, line 1 mor-)j is “σ)”
I am corrected. (2) What about the attached sheet? Ya

Claims (1)

[Scope of Claims] (1) A rotor equipped with a cylindrical permanent magnet, a stator disposed facing the armpit permanent magnet with a gap in between, and conductors arranged on a strip-shaped insulator at a predetermined pitch in the width direction. A rotating electrical machine characterized by comprising a stator winding formed by rolling a stator winding into a cylindrical shape, which are arranged continuously in a zigzag pattern in the longitudinal direction. (b) The stator winding includes a conductor disposed on the strip-shaped insulator, the base of which is parallel to and in contact with a center line that roughly bisects the width of the insulator, and has a height approximately equal to the width. Move an equilateral triangle from the center line to both 11 sides by the length of the base i, move it to the 9 position, and move it along the figure connecting the lower ends of each of the two sides of the triangle on both sides with a straight line parallel to the center line. Claim 1iK in which a plurality of insulating strips are arranged in succession, dripped onto the center band of the strip-shaped insulating material, folded and stacked, and then rolled into a cylindrical shape.
The rotating electric machine described in item 1. (3) A patent claim in which the negative length of the base of the isosceles triangle is equal to the length of one magnetic pole of the opposing rotor, and the number of sides of the triangle is an integral multiple of the number of magnetic poles of the rotor. The rotating electric machine according to item 2 of the scope. (4) A patent in which the conductors disposed on the strip-shaped insulator forming the stator winding consist of two groups arranged at 90 electrical degrees in the longitudinal direction, forming a two-phase winding. A rotating electric machine according to claim 1, 2, or 3. (5) The conductors disposed on the strip-shaped insulator forming the stator winding consist of three groups disposed at positions of 120 electrical degrees in the longitudinal direction, forming a three-phase winding. A rotating electric machine according to claim 1, 2, or 3. (6) The belt-shaped insulator according to claim 1, 2, 3, 4, or 5, wherein the strip-shaped insulator has a winding conductor for speed detection independent of the stator winding. Rotating electric machine. ) Claims 1, 2, 3, and 4, in which the strip-shaped insulator has a conductor portion for mounting a magnetic detector.
The rotating electrical machine according to item 5 or 6. (8) Claims 1, 2, 3, 4, 5, and 6, wherein the strip-shaped insulator has a mounting portion for electronic components and a conductor portion that interconnects them. or the rotating electrical machine described in paragraph 7.