WO2001008284A1

WO2001008284A1 - Structure of rotor (stator) and method of winding wire on this rotor (stator)

Info

Publication number: WO2001008284A1
Application number: PCT/JP2000/004938
Authority: WO
Inventors: Masaharu Ishikawa
Original assignee: Sun Coil Co., Ltd.
Priority date: 1999-07-26
Filing date: 2000-07-25
Publication date: 2001-02-01
Also published as: JP2001103692A

Abstract

A rotor core comprises a round rotor main body forming a rotor and salient poles provided along the periphery of the main body. The rotor core is constituted by forming unit rotors spaced at salient pole intervals such that a prescribed number of salient poles are removed from all the salient poles, by winding wires on salient poles of the unit rotors which are separated, and by combining the unit rotors with the cores mutually shifted at prescribed angle to assemble them into a rotor core.

Description

Description Rotor (stator) structure and winding method for this rotor (stator)

The present invention relates to a rotor (stator) structure in which a winding is provided on each magnetic pole having a plurality of magnetic poles, and a winding method for the rotor (stator). Background art

FIG. 9 shows a rotor 丄 of a general motor, which is a case of 12 poles as an example. As shown in FIG. 9, this type of rotor punches out a silicon steel sheet to have a number of poles corresponding to a predetermined number of poles, and then stacks these silicon steel sheets to form a magnetic path having a predetermined thickness. To form an armature core.

Salient poles 1 to 12 are formed on the periphery of the iron core according to the number of poles, and the tip of each salient pole is a magnetic pole piece. The coils 13 are wound around each salient pole. Reference numeral 14 denotes a magnetic path as a rotor body that integrally connects the salient poles 1 to 12 as a whole.

In the conventional apparatus described above, when winding the coil 13, a nozzle is passed through the gap L between the magnetic pole pieces, and the coil is wound using the slit of the gap L. I have. However, in order to perform this kind of winding work, at least a gap L of 1.2 mm or more is required. Therefore, even if the motor is to be further miniaturized, the size of this gap becomes a net, and there is a limit to the miniaturization of the motor.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and has a rotor (stator) structure capable of easily winding a coil regardless of the size of a gap L between the pole pieces, and this rotor. To provide a winding method for the stator (stator). And for the purpose. Disclosure of the invention

The rotor structure according to [claim 1] of the present invention is a rotor core comprising: a circular rotor main body forming a rotor; and a plurality of salient poles provided along a peripheral edge of the rotor main body. A unit rotor divided into a plurality of unit rotors is formed with a salient pole interval in a state in which a predetermined number of salient poles are evenly thinned out from the total number of salient poles in the rotor core, and the divided state is formed. The windings are individually applied to the salient poles of each unit rotor, and the above-mentioned unit rotors are combined with each other by shifting the cores by a predetermined angle with each other, and these are combined to form one rotor core. It was configured as follows.

The rotor structure according to [Claim 2] of the present invention is the invention according to [Claim 1], wherein the unit rotor positions the magnetic path main body while leaving both end widths at a center position of each salient pole piece thickness width. A center member, a bottom member in which the magnetic path main body is positioned by being shifted to one side of the salient pole piece thickness width, and a direction opposite to the direction in which the magnetic path main body is formed by the bottom member. And an upper surface member on which the magnetic path main body is positioned so as to be offset.

A winding method for a rotor core according to [Claim 3] of the present invention comprises a circular rotor main body forming a rotor, and a plurality of salient poles provided along a peripheral edge of the rotor main body. In the winding method for the rotor core, a unit divided into a plurality of units having a salient pole interval in a state where a predetermined number of salient poles are evenly thinned out from the total number of salient poles in the rotor core. While forming a rotor, a first winding step of winding a series of coils on the first group of salient poles serving as the reference after the division, and from the first group of salient poles serving as the reference. A second winding step of winding a series of coils around a second group of salient poles separated by a predetermined angle, and a third winding step further separated by a predetermined angle from the second group of salient poles A third winding step of winding a series of coils on the salient pole group is provided.

The stator structure according to [claim 4] of the present invention is a stator core comprising: a circular stator body forming a stator; and a plurality of salient poles provided along an inner peripheral edge of the stator body. In the above, a plurality of unit stators are formed having salient pole intervals in a state where a predetermined number of salient poles are evenly thinned out from the total number of salient poles in the stator core, Windings are individually applied to the salient poles of each unit stator in the divided state, and the unit stators are combined by shifting the cores by a predetermined angle with respect to each other, and are combined to form one fixed unit It was configured to be a child iron core.

The stator structure according to [Claim 5] of the present invention is the invention according to [Claim 4], wherein the unit stator positions the magnetic path main body while leaving both end widths at a center position of each salient pole piece thickness width. A bottom member in which the magnetic path main body is positioned by being offset to one direction end side of the salient pole piece thickness width; and a direction opposite to the direction in which the magnetic path main body is shifted by the bottom member. And an upper surface member on which the magnetic path main body is positioned to be offset.

A method of winding a stator core according to [claim 6] of the present invention comprises a circular stator body forming a stator, and a plurality of salient poles provided along an inner peripheral edge of the stator body. In the winding method for the stator core, the unit fixed into a plurality of units having a salient pole interval in a state where a predetermined number of salient poles are evenly thinned out from the total number of salient poles in the stator core. And a first winding step of winding a series of coils on the first group of salient poles serving as the reference after the division, and a step of winding from the first group of salient poles serving as the reference. A second winding step of winding a series of coils around a second group of salient poles separated by a fixed angle, and a third group of salient poles further separated by a predetermined angle from the second group of salient poles And a third winding step of winding a series of coils for It was to so. BRIEF DESCRIPTION OF THE FIGURES

1 is an overall configuration diagram showing an embodiment of the present invention, FIG. 2 is a configuration diagram showing an embodiment of a center member according to the present invention, and FIG. 3 is an embodiment of a bottom member according to the present invention. FIG. 4 is a block diagram showing an embodiment of a top member according to the present invention, FIG. 5 is an overall block diagram showing another embodiment, and FIG. FIG. 7 is a configuration diagram showing an embodiment of a bottom member of the stator, and FIG. 8 is a configuration diagram showing an embodiment of a top member of the stator. FIG. 9 is a diagram for explaining a general motor rotor. BEST MODE FOR CARRYING OUT THE INVENTION

The present invention will be described in more detail with reference to the accompanying drawings.

FIG. 1 is a configuration diagram showing an embodiment of the present invention, and shows the entire structure of a rotor. The feature of the configuration in the present embodiment is that the rotor し is divided into, for example, three parts, and these divided components are assembled together during assembly.

Then, the rotor 丄 was divided into three parts, for example, for each polarity different from each other by 90 ° according to Table 1 below. However, Table 1 shows the case of 12 poles as a whole, and each has a cross shape. table 1

Fig. 2 (a) shows the rotor 丄 divided into three parts, where the combination of magnetic pole numbers is shown in No. 1 in Table 1, and the combination of magnetic poles is 12—3—6—9. Is shown. FIG. 2 (b) is a cross-sectional view of FIG. 2 (a) taken along line XI--Χ, and shows the center positions of salient poles 12 and 6 respectively (the thickness of the salient poles is divided into three equal parts, (Part indicated as 14 in Fig. 2 (b).) The competitor is the position of the magnetic path 14. Hereinafter, the one in which the magnetic path is at the intermediate position is referred to as the center member.

Fig. 3 (a) shows the combination of the magnetic pole numbers shown in No. 2 in Table 1 among the three divisions of rotor 、, and the combination of magnetic poles is 1-4-7-10 Show the case. As is clear from Fig. 3 (a), the entire shape is shifted clockwise by 30 ° with respect to the vertical line passing through the center.

FIG. 3 (b) is a cross-sectional view of FIG. 3 (a) taken along the line X2-X2 ′. In order to compare the relationship with FIG. 2 (b), a vertical shape (30 ° counterclockwise) is shown. (Returned state). Fig. 3 (b) shows the positions of the left ends of salient poles 1 and 7 respectively (the thickness of the salient poles is divided into three equal parts, and the left side is indicated by 14 in Fig. 3 (b)). This is the location of Road 14. Hereinafter, the magnetic path at the left end is referred to as a bottom member. The salient pole 4 also protrudes downward from the surface of the magnetic path 14, that is, perpendicularly to the line connecting the magnetic poles 1 and 7 from the paper surface. Fig. 4 (a) shows the combination of magnetic pole numbers shown in No. 3 in Table 1 among the three divided rotors 、, and the combination of magnetic poles is 1 1 1 2—5—8 Show the case. As is clear from FIG. 4 (a), the entire shape is shifted 30 ° counterclockwise with respect to a vertical line passing through the center.

FIG. 4 (b) is a cross-sectional view of FIG. 4 (a) viewed from X 3 — Χ 3 ′. In order to compare the relationship with FIG. 2 (b), a vertical (30 ° clockwise) ° returned). Fig. 4 (b) shows the positions of the right ends of salient poles 11 and 5 respectively (the thickness of the salient poles is divided into three equal parts, and to the right is the part shown as 14 in Fig. 4 (b)). This is the position of the magnetic path 14. Hereinafter, the one having the magnetic path at the right end is referred to as a top member. The salient pole piece 2 also projects downward from the plane of the magnetic path 14 from the plane of the paper in the same manner as described above.

The above is an explanation of the individual units obtained by dividing the rotor 3 into three parts (hereinafter referred to as unit rotors), namely, the center member (Fig. 2), the bottom member (Fig. 3), and the top member (Fig. 4) It is. Next, the case of winding a coil will be described. The winding is performed for each unit rotor having the cross shape. In this case, the terminals of winding start A and winding end B for each unit rotator should be clearly defined. There is a winding start A and a winding end B for every four poles of each cross. The winding method will be described below. As can be seen from the above description, each of the divided unit rotors has a cross-shaped structure. Moreover, each unit rotor has a shape in which a predetermined number of salient poles are evenly thinned out from the overall configuration shown in FIG. In this case, the whole is one or two poles, which are equally divided into three. As described above, the combinations of the magnetic pole numbers are the combinations shown in Table 1, as indicated by the numbers 1, 2, and 3, respectively. It has become. In other words, the combination of magnetic poles is 1 2—3—6—9 for number 1, 1–4—7—10 for number 2, and 11–2—5—8 for number 3, which are cross-shaped. have. Therefore, the first salient pole group based on the combination of number 1 In No. 2, a second salient pole group was separated from the first mounting pole group by an angle of, for example, 30 °, and in No. 3, an additional 30 ° angle was separated from the second salient pole group. This is the third salient pole group.

Therefore, in the winding process, independent winding work is performed for each combination of the magnetic poles No. 1, No. 2 and No. 3 described above. That is, the combination of No. 1 is a reference winding, the combination of No. 2 is a second salient pole group separated by 30 ° from the first salient pole group serving as the reference, and the combination of No. 3 is the second salient pole group. A third salient pole group is further separated by 30 ° from the pole group, and each salient pole group performs winding work independently of each other. The windings of the first salient pole group are referred to as a first winding step, and those of the second and third salient pole groups are referred to as a second winding step and a third winding step.

If the winding process of the whole salient poles is to be continuously performed by the conventional method, the winding process is continuously completed for each of the reference salient pole groups, and then the operation is temporarily stopped. After the nozzle is moved to the salient element group with a different 0 ° direction, the setting is performed, and the winding process is started again.After the winding process for the 30 ° different salient element group is completed, Processing for performing the setting after the movement for the salient pole groups having different 30 ° directions is required.

However, in the case of the present embodiment, since each winding process is performed continuously in an independent state (independently for each unit rotor), the suspension of the winding operation, the movement of the nozzle, the setting operation, and the like are performed. All can be omitted, and the winding time can be greatly reduced.

Next, the rotors of each unit whose windings have been completed may be assembled together. Positioning in this case is based on the center member (Fig. 2 (a)), the bottom member (Fig. 3 (a)) is arranged below the center member (Fig. 2 (a)), and the top member (Fig. Figure (a)) is placed.

That is, Fig. 2 (a) is used as the core, and Fig. 3 (a) and Fig. 4 (a) Is fixed in the shape shown in FIG.

More specifically, in the center member, the magnetic path 14 of the rotor body is located at the center position of the salient pole as shown in FIG. When the bottom member (Fig. 3 (b)) and the top member (Fig. 4 (b)) are assembled in this state, the bottom member and the top member are fitted into the recess of the center member, and the overall shape is flat. In a state.

In the above description, the fixing between the members after assembly is not particularly described, but various types are conceivable. That is, various bonding means (welding, sticking, fitting, screwing, etc.) may be used.

Conventionally, winding work could not be performed unless there was a gap of at least 1.2 mm between the pole pieces.However, according to the present embodiment, even if the gap L is zero, It is possible. That is, the winding operation is performed independently for each unit rotor, and then each unit rotor is simply combined.

Further, in the present embodiment, the rotor 丄 is arranged at the center position (the center portion where the shaft is located), a stator made of a permanent magnet is provided around the periphery of the rotor 丄, and the rotor 設け provided at the center position is provided. It has been described as being rotated. The present invention is not limited to this, and the rotor に shown in FIG. 1 may be fixed, and the stator on the periphery may be rotated. It should be noted that this type of method is well known only from the relation between the rotor and the stator, because only one of them is used as the rotor (or the stator).

FIG. 5 is a configuration diagram showing another embodiment. In the present embodiment, as described above, the present invention is applied to the stator winding. That is, the basic concept is exactly the same as that of the rotor described above. As shown in FIG. 5, reference numeral 15 denotes an iron core constituting a magnetic path of the stator (which functions as a rotor in the present embodiment). Thus, salient poles 1 to 12 are provided.

A rotor (not shown) (which functions as a stator in the present embodiment) is provided at the center position. In this case as well, in the same manner as in the case of the rotor, it is necessary to wind a coil around each of the salient poles 1 to 12, and in that operation, each gap size 1 is small, which is inconvenient as in the case of the rotor. There is. Thus, in the present embodiment, a predetermined number of salient poles are evenly thinned out from the overall configuration shown in FIG. 5 to create a stator of each unit divided in the same manner as in the previously described embodiment ( Hereinafter, this is called a unit stator.) At the time of winding, assembling the respective members integrally at the end of the winding operation of each salient pole group is exactly the same as in the case of the rotor described above. That is, the bottom member (FIG. 7 (a)) is arranged below the center member (FIG. 6 (a)), and the top member (FIG. 8 (a)) is positioned from above the center member. It is the same as in the case of the rotor described above, which is arranged and then fixed in the overall shape of FIG. According to the present embodiment, the winding operation is easy and the operation time can be greatly reduced as in the case of the rotor base. Industrial applicability

According to the present invention, the salient poles of the rotor (stator) are thinned out from the state having the required salient poles and divided into a plurality of units, and the windings are wound on the individual salient poles in the divided state. Finally, the individual iron cores are assembled together, so the winding work can be performed on the salient poles in a thinned state, making the work itself extremely simple and constraining the power and motor size. Instead, the number of turns can be increased. Therefore, it is possible to increase the torque of the motor, and at the same time, to eliminate the rotation unevenness of the motor, and to further shorten the winding time.

Claims

The scope of the claims

1. In a rotor core composed of a circular rotor main body forming a rotor and a plurality of salient poles provided along the periphery of the rotor main body, the number of salient poles in the rotor core is determined. A plurality of unit rotors are formed having a salient pole interval in a state in which a predetermined number of salient poles are evenly thinned out, and a salient pole of each unit rotor in the divided state is formed. A rotor structure, wherein windings are individually applied, and the unit rotors are united by shifting the cores by a predetermined angle with respect to each other, and combining them to form one rotor core.

2. The rotor structure according to claim 1, wherein the unit rotor is a central member in which the magnetic path main body is located while leaving both end widths at the center of each salient pole piece thickness width, and the salient pole piece. A bottom member on which the magnetic path main body is positioned by being shifted to one end of the thickness width, and a magnetic path main body positioned by being shifted in the direction opposite to the direction of the magnetic path main body formed by the bottom member. A rotor structure characterized by having an upper surface member.

3. A winding method for a rotor core comprising a circular rotor body forming a rotor, and a plurality of salient poles provided along the periphery of the rotor body, wherein a total protrusion on the rotor core is provided. A plurality of unit rotors are formed having a salient pole interval in a state where a predetermined number of salient poles are evenly reduced from the number of poles, and a first salient serving as a reference after the division is formed. A first winding step of winding a series of coils on the pole group; and a series of windings on a second salient pole group separated by a predetermined angle from the reference first salient pole group. A second winding step of winding the coil; and a third winding step of winding a series of coils on a third salient pole group further separated from the second salient pole group by a predetermined angle. And a winding method for a rotor core.

4. In the stator core including the circular stator body forming the stator and the plurality of salient poles provided along the inner peripheral edge of the stator body, the number of all salient poles in the stator core The unit stator is divided into a plurality of unit stators having salient pole intervals in a state where a predetermined number of salient poles are evenly thinned from the unit stators, and the salient poles of each unit stator in the divided state are formed. A stator structure, wherein windings are individually applied to the unit stators, and the unit stators are combined by shifting the cores by a predetermined angle with respect to each other, and then combined to form one stator core.

5. The stator structure according to claim 4, wherein the unit stator comprises: a central member in which the magnetic path main body is located while leaving both end widths at a center position of each salient pole piece thickness width; and the salient pole piece. A bottom member on which the magnetic path main body is positioned by being shifted to one end of the thickness width, and a magnetic path main body positioned by being shifted in the direction opposite to the direction of the magnetic path main body formed by the bottom member. A stator structure characterized by having an upper surface member.

6. A winding method for a stator core comprising a circular stator body forming a stator and a plurality of salient poles provided along an inner peripheral edge of the stator body, and From the number of all salient poles, a predetermined number of salient poles are equally spaced from each other to form a unit stator having a salient pole spacing, and serve as a reference after the division. A first winding step of winding a series of coils on the first salient pole group; and a second winding step for a second salient pole group separated by a predetermined angle from the reference first salient pole group. A second winding step of winding a series of coils by winding a series of coils on a third group of salient poles further separated from the second group of salient poles by a predetermined angle. 3. A winding method for a stator core, comprising the following three winding steps.