KR20190112148A - Rotating electricity and its manufacturing method - Google Patents

Abstract

The iron core of the rotary electric machine is constructed by connecting a divided iron core connecting body in which a plurality of divided iron cores are arranged in an arc shape in a plurality of annular shapes. Each divided iron core is constructed by stacking a first core piece and a second core piece. The first core piece has a first arm portion and a second arm portion. The second core piece has a first shoulder portion and a second shoulder portion. When the divided iron cores are arranged in an arc shape, the first arm portion and the second arm portion of the adjacent first core piece are engaged, and the first shoulder portion and the second shoulder portion of the adjacent second core piece are engaged. With respect to each divided iron core, a range of directions in which the first core piece adjacent in the circumferential direction with respect to any of the first core pieces can be relatively shifted in a plane perpendicular to the stacking direction, and the first laminated piece on the first core piece. The range of the direction where the 2nd core piece laminated | stacked on the 1st core piece adjoining the said circumferential direction with respect to 2 core piece in the plane which is relatively shift | deviated in the plane perpendicular | vertical to a lamination direction does not overlap.

Description

Rotating electricity and its manufacturing method

The present invention relates to a structure of an iron core used for a rotary electric machine and a manufacturing method thereof.

As a manufacturing method of the iron core of a rotary electric machine, there exists a method of laminating | stacking a plate-shaped core piece in order to reduce the power loss in an iron core. However, in the rotary rotor of the outer rotor type in which the rotor is disposed on the outer circumferential side of the iron core, when the core piece is integrally punched out by the steel plate, which is the material of the core piece, the steel sheet on the inner circumferential side becomes a residue than the back yoke portion of the core piece. This gets worse. The material yield can be improved by dividing the core pieces by magnetic pole units. However, if a gap is formed between the core pieces, the efficiency of rotational electricity decreases. Therefore, it is preferable that the core pieces can be fixed in a state in which the core pieces are arranged in a circular shape. Do. Conventionally, patent documents 1 and 2 are known as a manufacturing method of an iron core which satisfy | fills such a request.

Japanese Patent Publication No. 2003-199270 Japanese Patent Publication No. 2007-159170

However, in patent document 1, since it retains and fixes a retainer between each core piece, it costs material cost and processing cost. Moreover, in patent document 2, in order to fit the groove | channel and protrusion provided between each core piece, and to fix each core piece, it is necessary to fit each core piece in a lamination direction, and it costs processing cost and equipment cost.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a rotary electric machine capable of reducing the material cost, processing cost and equipment cost of an iron core and a manufacturing method thereof.

In order to solve the above problems, the rotary electric machine according to the present invention comprises a split iron core connecting body in which a plurality of split iron cores are arranged in an arc shape. The split iron core is constructed by stacking a first core piece and a second core piece. The first core piece is provided at one end of the first core piece and is formed by a first convex portion and a first concave portion concave toward the inner circumferential side than the first convex portion, or the other of the first core piece. It has either one or both of the 2nd recessed part provided in the edge part and formed by the 2nd convex part engaged with the said 1st convex part, and the 2nd convex part engaged with the said 1st concave part. The second core piece is provided at one end of the second core piece and is provided at the first shoulder portion formed by the third convex portion protruding in the circumferential direction, or at the other end of the second core piece and the third It has either one or both of the 2nd shoulder part formed by the 3rd recessed part engaged with the convex part. When the divided iron cores are arranged in an arc shape, the first arm portion and the second arm portion of the adjacent first core piece are engaged, and the first shoulder portion and the second shoulder portion of the adjacent second core piece are engaged. With respect to each divided iron core, a range of directions in which the first core piece adjacent in the circumferential direction with respect to any of the first core pieces can be relatively shifted in a plane perpendicular to the stacking direction, and the first laminated piece on the first core piece. The range of the direction where the 2nd core piece laminated | stacked on the 1st core piece adjoining the said circumferential direction with respect to 2 core piece in the plane which is relatively shift | deviated in the plane perpendicular | vertical to a lamination direction does not overlap.

Another rotary electric machine according to the present invention consists of a split iron core connecting body in which a plurality of split iron cores are arranged in an arc shape. The split iron core is constructed by stacking a first core piece and a second core piece. The 1st arm part is provided in the one end part of the said 1st core piece, A 1st arm part formed by the 1st convex part which protrudes to the opposite side with respect to a circumferential direction, or a said 1st arm part, or the said It has either one or both of a 2nd convex part provided in the other end part of a 1st core piece, and joined by the 2nd convex part engaged with the said 1st convex part, and a 2nd concave part engaged with the said 1st convex part. . The second core piece is provided at one end of the second core piece, and the third shoulder portion and the third shoulder portion are formed by a third concave portion concave on the opposite side with respect to the circumferential direction, or the second It has either one or both of the 4th recessed part provided in the other end part of a core piece and engaged with the said 3rd convex part, and the 2nd shoulder part formed by the 4th convex part engaged with the said 3rd concave part. When the divided iron cores are arranged in an arc shape, the first arm portion and the second arm portion of the adjacent first core piece are engaged, and the first shoulder portion and the second shoulder portion of the adjacent second core piece are engaged. With respect to each divided iron core, a range of directions in which the first core piece adjacent in the circumferential direction with respect to any of the first core pieces can be relatively shifted in a plane perpendicular to the stacking direction, and the first laminated piece on the first core piece. The range of the direction where the 2nd core piece laminated | stacked on the 1st core piece adjoining the said circumferential direction with respect to 2 core piece in the plane which is relatively shift | deviated in the plane perpendicular | vertical to a lamination direction does not overlap.

According to the rotary electric machine and the manufacturing method thereof according to the present invention, each divided iron core constituting the iron core can be fixed by the shape of each core piece, and a retainer is inserted between each core piece or each core piece is fitted in the stacking direction. Since there is no need, the material cost, processing cost, and equipment cost of an iron core can be reduced.

1 is a perspective view of a split iron core connecting body according to Embodiment 1;
FIG. 2A is a top view of the first core piece of the split iron core connecting body according to the first embodiment, and (B) is a top view of the second core piece of the split iron core connecting body according to the first embodiment.
3 (A) and (C) are top views of the first core piece according to the first embodiment, and (B) and (D) are top views of the second core piece according to the first embodiment.
4 is a diagram for shifting the divided iron core according to the first embodiment to the outer circumferential side.
FIG. 5 is a diagram for attempting to rotate the divided iron core according to the first embodiment in a counterclockwise direction.
FIG. 6 is a first view for explaining a direction in which the divided iron cores according to the first embodiment can be relatively shifted.
FIG. 7 is a second diagram illustrating a direction in which the divided iron cores according to the first embodiment can be relatively shifted.
8 is a diagram illustrating a fitting state of the divided iron cores according to the first embodiment.
9 is a view showing an open state of the divided iron core according to the first embodiment.
It is a figure which shows the state at the time of winding a magnet wire in the split iron core which concerns on Embodiment 1. FIG.
11 is a perspective view of a split iron core connecting body according to Embodiment 2. FIG.
12 is a top view of a second core piece of the split iron core connecting body according to the second embodiment.
FIG. 13 is a view showing a plurality of connected divided iron cores according to the second embodiment. FIG.
It is a figure which shows the detail of the hole part provided in the 2nd core piece which concerns on Embodiment 2. FIG.
It is a figure which shows the connection state by the projection part and the hole part of the division iron core which concerns on Embodiment 2. FIG.
It is a figure which shows the state at the time of winding a magnet wire in the split iron core which concerns on Embodiment 2. FIG.
17 is a perspective view of a split iron core connecting body according to Embodiment 3;
FIG. 18A is a top view of the first core piece of the split iron core connecting body according to the third embodiment, and (B) is a top view of the second core piece of the split iron core connecting member according to the third embodiment.
19 (A) and (C) are top views of the first core piece according to the third embodiment, and (B) and (D) are top views of the second core piece according to the third embodiment.
20 is a first diagram illustrating a direction in which the divided iron cores according to the third embodiment are relatively shifted.
FIG. 21 is a second diagram for explaining a direction in which the divided iron cores according to the third embodiment are relatively shifted.
FIG. 22 is a diagram showing a state when the magnet wire is wound around the divided iron core according to the third embodiment. FIG.
FIG. 23 is a diagram showing a plurality of connected divided iron cores according to the third embodiment. FIG.
It is a figure which shows the detail of the hole part provided in the 2nd core piece which concerns on Embodiment 3. FIG.
FIG. 25 is a diagram showing a connection state between the protrusions and the hole portions of the divided iron core according to the third embodiment. FIG.

EMBODIMENT OF THE INVENTION Hereinafter, with reference to an accompanying drawing, embodiment of the rotary electric machine and its manufacturing method which concern on this invention is described in detail. However, embodiment shown below is an example and this invention is not limited by these embodiment.

Embodiment 1

As shown in Figs. 1 and 2, the rotary electric machine according to Embodiment 1 of the present invention is constructed by combining a divided iron core connecting member 100 formed by arranging a plurality of divided iron cores 1 in an arc shape in an annular shape. It is. Moreover, each divided iron core 1 is comprised by laminating | stacking the 1st core piece 2 and the 2nd core piece 3 alternately, and the back yoke part 4 provided in the inner peripheral side of an annular iron core, The magnetic pole piece part 5 which protrudes toward the outer peripheral side from the said back yoke part 4 is provided. In the following description, the inner circumferential side of the annular iron core is simply referred to as the "inner circumferential side", and the outer circumferential side of the annular iron core is simply called the "outer circumferential side".

As shown to (A) and (C) of FIG. 3, the 1st core piece 2 protrudes from the center of the back yoke part 6 provided in the inner peripheral side to the outer peripheral side from the center of the said back yoke part 6. It has a magnetic pole piece 7 which is provided. At one end of the back yoke portion 6, the first arm portion 8 is formed by the first convex portion 8A and the first concave portion 8B which is concave to the inner circumferential side than the first convex portion 8A. have. In addition, at the other end, the second arm portion is formed by the second concave portion 9A engaged with the first convex portion 8A and the second convex portion 9B engaged with the first concave portion 8B. (9) is formed.

The divided core assembly 100 is configured by arranging six first core pieces 2 in an arc shape. At this time, the 1st arm part 8 and the 2nd arm part 9 of the adjoining 1st core piece 2 and 2 are engaged, and it contacts in the 1st contact surface T1. Moreover, the notch 10 is formed in the inner peripheral side of the 1st arm part 8. As shown in FIG.

As shown to (B) and (D) of FIG. 3, the 2nd core piece 3 protrudes from the center of the back yoke part 11 provided in the inner peripheral side to the outer peripheral side from the center of the said back yoke part 11. And a magnetic pole piece portion 12 provided. At one end of the back yoke portion 11, a first shoulder portion 13 is formed by a third convex portion 13A projecting in the circumferential direction. Moreover, the 2nd shoulder part 14 is formed in the other edge part by 14 A of 3rd recessed parts engaged with the said 3rd convex part 13A.

The divided core assembly 100 is configured by arranging six second core pieces 3 in an arc shape. At this time, the 1st shoulder part 13 and the 2nd shoulder part 14 of the adjoining 2nd core piece 3 and 3 are engaged, and it contacts on the 2nd contact surface T2. The inner circumferential side of the first shoulder portion 13 has an arc shape, and an arc portion 15 is formed.

Next, a first action of the rotary electric machine according to Embodiment 1 of the present invention will be described.

As described above, in the divided iron core connecting member 100, in the state where each divided iron core 1 is arranged in an arc shape, the first arm portion 8 and the first arm portion 2 of the adjacent first core pieces 2 and 2 are formed. The two arm portions 9 make contact at the first contact surface T1. Moreover, the 1st shoulder part 13 and the 2nd shoulder part 14 of the adjoining 2nd core piece 3 and 3 contact in 2nd contact surface T2. In this state, in each split iron core 1 constituting the split iron core connecting body 100, the split iron core 1 adjacent to the split iron core 1 in the circumferential direction in a plane perpendicular to the stacking direction is formed. The thing which cannot shift relatively is shown below.

As shown in Fig. 4, when the right split iron core 1b tries to shift to the outer circumferential side with respect to the left split iron core 1a, the first arm portion 8a of the first core piece 2a on the left side, The 2nd arm part 9b of the 1st core piece 2b of the right side interferes in the 1st contact surface T1. As a result, the split iron core 1b on the right side cannot shift to the outer circumferential side with respect to the split iron core 1a on the left side.

In addition, as shown in FIG. 5, in order to avoid the interference between the first arm portion 8a and the second arm portion 9b, the split iron core 1b on the right side is self-aligned with respect to the split iron core 1a on the left side. When it is going to rotate in the counterclockwise direction, the 1st shoulder part 13a of the 2nd core piece 3a of the left side, and the 2nd shoulder part 14b of the 2nd core piece 3b of the right side are made into 2 Interfere in the contact surface T2. As a result, the split iron core 1b on the right cannot rotate counterclockwise around itself with respect to the split iron core 1a on the left.

As described above with reference to FIGS. 4 and 5, in the divided iron cores 1 arranged in an arc shape, in each divided iron core 1, the divided iron cores 1 in a plane perpendicular to the stacking direction. With respect to the circumferential direction, the divided iron cores 1 cannot relatively shift.

Next, in the split iron core connecting body 100, in each split iron core 1, the split iron core 1 adjacent to the split iron core 1 in the circumferential direction in a plane perpendicular to the stacking direction is relative. The thing which cannot shift | deviate by is shown below by the method different from the above.

In FIG. 6A, the condition that the right divided iron core 1b can shift relative to the left divided iron core 1a is considered. First, as described above, the first arm portion 8a and the second arm portion 9b of the adjacent first core pieces 2a and 2b are in contact with each other at the first contact surface T1. Moreover, the 1st shoulder part 13a and the 2nd shoulder part 14b of the adjoining 2nd core piece 3a, 3b are in contact with the 2nd contact surface T2. In addition, the surface which the adjacent 1st core piece 2a, 2b contacts on the outer peripheral side of the 1st arm part 8a is called 3rd contact surface T3.

In FIG. 6A, in order not to interfere with the first core pieces 2a and 2b, as shown in FIG. 6B, between the first contact surface T1 and the third contact surface T3. It is necessary for the first core piece 2b on the right side to shift relative to the first core piece 2a on the left side in the direction included in the first angle range α.

In addition, in FIG.6 (A), in order not to interfere with 2nd core piece 3a, 3b, as shown in FIG.6 (B), between 2nd contact surface T2 and the surface orthogonal to it. It is necessary for the second core piece 3b on the right side to shift relative to the second core piece 3a on the left side in the direction included in the second angle range β.

However, as shown in FIG. 6B, the common range does not exist in the first angle range α and the second angle range β. Therefore, it becomes impossible to shift the split iron core 1b on the right side relative to the split iron core 1a on the left side. That is, in the state where each division iron core 1 is arranged in an arc shape, in each division iron core 1, the division iron core 1 adjoining circumferentially with respect to the said division iron core 1 in the plane perpendicular | vertical to a lamination direction ) Cannot be relatively shifted.

The necessity of the above-mentioned "there is no common range in the direction (alpha) to which the 1st core piece 2 can shift relatively, and the direction (beta) to which the 2nd core piece 3 can shift relatively." The sufficient condition is that the extension of the first contact surface T1 and the extension of the second contact surface T2 meet on the outer circumferential side of the divided iron core 1.

If the extension of the first contact surface T1 and the extension of the second contact surface T2 meet on the inner circumferential side of the divided iron core 1, the common range is in the first angle range α and the second angle range β. Occurs. In this case, since the divided iron core 1 can be shifted relatively in the direction included in the common range, in the divided iron core 1, the divided iron core 1 is circumferentially with respect to the divided iron core 1 in a plane perpendicular to the stacking direction. Adjacent split iron cores 1 are relatively displaced.

As described above, in the rotary electric machine according to Embodiment 1 of the present invention, when each divided iron core 1 is arranged in an arc shape, the first arm portion 8 of the adjacent first core pieces 2 and 2 and While the second arm portion 9 is engaged, the first shoulder portion 13 and the second shoulder portion 14 of the adjacent second core pieces 3 and 3 are engaged, and any first core piece 2a is engaged. ) And a range of directions in which the first core piece 2b adjacent to each other in the circumferential direction is relatively shifted in a plane perpendicular to the stacking direction, and the second core piece stacked on any one of the first core pieces 2a. With respect to (3a), the range of the direction where the 2nd core piece 3b laminated | stacked on the 1st core piece 2b adjoining the said circumferential direction in the plane perpendicular | vertical to a lamination | stacking direction can shift relatively does not overlap. Thereby, the core pieces adjacent to each other in the circumferential direction can be fixed in accordance with the shape of each core piece, so that it is not necessary to insert a retainer between each core piece or to fit each core piece in the lamination direction. Material costs, processing costs, and equipment costs can be reduced.

Next, a second action of the rotary electric machine according to Embodiment 1 of the present invention will be described.

As mentioned above, in the split iron core 1, the notch 10 is formed in the inner peripheral side of the 1st arm part 8 of the 1st core piece 2 (FIG. 3A). Moreover, the arc part 15 is formed in the inner peripheral side of the 1st shoulder part 13 of the 2nd core piece 3 (FIG. 3B). Therefore, as shown in Fig. 7A, the right divided iron core 1b is rotated clockwise with respect to the left divided iron core 1a, so that the left divided iron core 1a and the right divided iron core ( The outer circumferential side between 1b) may be opened to close the inner circumferential side.

In this state, when the surface where the first shoulder portion 13a and the second shoulder portion 14b are in contact with the fourth contact surface T4 is shown in Fig. 7B, the second angle range β ) Is changed in the direction between the fourth contact surface T4 and the surface orthogonal thereto, resulting in a third angle range γ which is a common range between the first angle range α and the second angle range β. Therefore, the right armed core 1b is shifted with respect to the left handed iron core 1a in the direction of the third angle range γ, and the first arm portion 8a of the first core piece 2a on the left side is shifted. And the 2nd arm part 9b of the 1st core piece 2b of the right side can be made into the state which does not contact.

Thereafter, the divided iron cores 1 are arranged in an arc shape, and the first arm portion 8 and the second arm portion 9 of the adjacent first core pieces 2 and 2 are arranged as shown in FIG. 8. The contacted state is referred to as the "fit state" of the divided iron core 1.

Moreover, after rotating the divided iron core 1, as shown in FIG. 9, the 1st arm part 8 and the 2nd arm part 9 of the adjoining 1st fragments 2 and 2 do not contact. The state which prevented it is called the "open state" of the divided iron core 1.

As is well known, there is a process of winding a magnet wire in the magnetic pole piece of the split iron core 1 when manufacturing a rotary electric machine. At this time, it is difficult to pass the winding nozzle because the respective split iron cores 1 cannot be shifted in the fitted state of the split iron cores 1, but it is difficult to pass the split iron cores 1 in the open state. ) The winding nozzle can be easily passed by increasing the distance between the coils.

FIG. 10A shows a state in which the divided iron core 1 is opened and the magnet wire is wound around the pole piece portion 7 of the first core piece 2. In addition, the state at the time of winding a magnet wire in the pole piece part 12 of the 2nd core piece 3 is shown in FIG.

In addition, when winding by using a pliers on the pole piece of one divided iron core 1, the divided iron core 1 different from the track of the pliers is different in the state where the other divided iron core 1 exists on the outer circumferential side than the back yoke portion. Although the winding becomes difficult due to interference, in the open state of the split iron core 1, each split iron core 1 is rotated as it is while the split iron core 1 is connected, and it is more than the back yoke portion of one split iron core 1. It can be set as the state which does not have another division iron core 1 in the outer peripheral side. In this state, since the track of the pliers and the other split iron core 1 do not interfere, the manufacture of the rotary electric machine can be facilitated by this.

As explained above, in the rotary electric machine which concerns on Embodiment 1 of this invention, the notch 10 is formed in the inner peripheral side of the 1st arm part 8 of the 1st core piece 2, and the 2nd core piece 3 An arc portion 15 is formed on the inner circumferential side of the first shoulder portion 13. Thereby, since the division iron core 1 can be rotated and made into the open state, manufacture of a rotary electric machine can be made easy. In addition, since the divided cores 1 cannot be opened after the end of the winding of the magnet wire is inserted into the rotating electric shaft, the divided iron cores 1 are inadvertently opened. There is no work.

Embodiment 2

Next, the rotary electric machine which concerns on Embodiment 2 of this invention is demonstrated.

In the iron core of the rotary electric machine according to Embodiment 1, since the adjacent split iron cores 1 and 1 are not connected to each other, there is a possibility that the split iron cores 1 and 1 are separated from each other in a process such as winding of a magnet wire. have. Since the divided iron core 1 is constituted by stacking a plurality of core pieces, it is difficult to connect again once separated. Therefore, in Embodiment 2, the structure which does not isolate | separate divided iron core 201, 201 is shown.

As shown to FIG. 11 and FIG. 12, the protrusion part 221 is provided in the 2nd arm part 209 of the 1st core piece 202 of the divided iron core 201. As shown in FIG. In addition, a hole portion 222 is provided in the first shoulder portion 213 of the second core piece 203 of the divided iron core 201. Then, the protruding portions 221 of the first core piece 202 are inserted into the hole portions 222 of the second core piece 203 so that the adjacent divided iron cores 201 and 201 are connected to each other.

According to such a structure, since adjacent division iron cores 201 and 201 are not isolate | separated, manufacture of a rotary electric machine can be made easier. In addition, since the projection part 221 of the 1st core piece 202 can be provided by the dowel by caulking at the time of a punching, the projection part 221 can be easily provided without using a special facility. have.

13 illustrates a top view of a plurality of divided iron cores 201. When manufacturing each core piece, when each core piece is arranged in circular arc shape and punched out, the inner peripheral side of an arc will remain as remnants, but the material of each core piece is aligned by punching out each core piece in linear form. It is possible to improve the material yield of the steel sheet. Moreover, since the angle which the direction which each pole piece part protrudes and the direction which the steel plate rolls becomes the same in each core piece, the electronic deviation of each pole piece part becomes small, and the efficiency of rotary electric machine improves.

Moreover, in the iron core of an outer rotor type rotary electric machine, the magnetic pole piece part protrudes from the center of a back yoke part to the outer peripheral side, and the width of an inner peripheral side is narrower than the width of the outer peripheral side of a back yoke part. Therefore, to align and punch each core piece in a straight line, it is necessary to make the divided iron core 201 open and further increase the distance between the divided iron cores 201 and 201. That is, each of the divided iron cores 201 takes a plurality of posture states at the time of assembling the iron cores, but in each state, the protrusions 221 are inserted into the hole portions 222 so that the respective divided iron cores 201 are connected. The manufacture of the rotary electric machine can be made easy.

The detailed structure of the hole part 222 of the 2nd core piece 203 is shown by FIG. In addition, the detail of the state in which the protrusion part 221 of the 1st core piece 202 was inserted in the hole part 222 of the 2nd core piece 203 is shown by FIG. As shown in these figures, the hole portion 222 of the second core piece 203 has an arc array hole portion 223, a linear alignment hole portion 224, and a connection hole portion 225. In the circular arc arranging hole portion 223, the projection 221 of the first core piece 202 is positioned when the core pieces are arranged on the arc. In the linear alignment hole 224, when the core pieces are aligned in a straight line, the protrusion 221 of the first core piece 202 is positioned. The connection hole 225 connects the arc array hole 223 and the linear alignment hole 224.

According to such a structure, after punching each core piece in the state where the protrusion part 221 of the 1st core piece 202 is located in the linear alignment hole part 224 of the 2nd core piece 203, the protrusion part 221 ) Is wound around the pole piece 205 in a state where the linear alignment hole 224 or the connection hole 225 is located (see FIG. 16), and the protrusion 221 is located at the arc array hole 223. In the state, an iron core composed of a plurality of divided iron cores 201 can be inserted into the shaft of the rotary electric machine. Thereby, it is possible to perform it without disconnecting the iron cores 201 and 201 from the punching in the state in which each core piece was linearly aligned, and the insertion of the iron core to the winding of a magnet wire and the axis of a rotary electric machine.

Embodiment 3

As shown in FIG. 17 and FIG. 18, the rotary electric machine according to Embodiment 3 of the present invention combines the divided iron core connecting members 300 formed by arranging a plurality of divided iron cores 301 in an arc shape in an annular shape. Consists of. Each of the divided iron cores 301 is configured by alternately stacking the first core piece 302 and the second core piece 303, and includes a back yoke portion 304 provided on the inner circumferential side of the annular iron core. The magnetic pole piece portion 305 protrudes from the back yoke portion 304 toward the outer circumferential side thereof. In the following description, the inner circumferential side of the annular iron core is simply referred to as the "inner circumferential side", and the outer circumferential side of the annular iron core is simply called the "outer circumferential side".

As shown to (A) and (D) of FIG. 19, the 1st core piece 302 protrudes from the center of the back yoke part 6 provided in the inner peripheral side to the outer peripheral side from the center of the said back yoke part 6. It has a magnetic pole piece 7 which is provided. At one end of the back yoke portion 6, the first concave portion 308A and the first concave portion 308A are formed by a first convex portion 308B projecting on the opposite side with respect to the circumferential direction. 308 is formed. In addition, a second arm portion is formed at the other end by a second convex portion 309A engaged with the first concave portion 308A and a second concave portion 309B engaged with the first convex portion 308B. 309 is formed.

The split iron core connecting member 300 is configured by arranging six first core pieces 302 in an arc shape. At this time, the 1st arm part 308 and the 2nd arm part 309 of the adjoining 1st core piece 302,302 are engaged, and it contacts in the 1st contact surface T5. The inner circumferential side of the first arm portion 308 has an arc shape, and an arc portion 316 is formed.

As shown to FIG. 19 (B) and (D), the 2nd core piece 303 protrudes from the center of the back yoke part 11 provided in the inner peripheral side, and the outer peripheral side from the center of the said back yoke part 11. And a magnetic pole piece portion 12 provided. At one end of the back yoke portion 11, the third shoulder portion 313B and the third protrusion portion 313B are formed by the first shoulder portion 313 by the third recessed portion 313A which is concave to the opposite side with respect to the circumferential direction. ) Is formed. In addition, a second shoulder portion is formed at the other end by a fourth convex portion 314A engaged with the third concave portion 313A and a fourth concave portion 314B engaged with the third convex portion 313B. 314 is formed.

The split iron core connecting member 300 is configured by arranging six second core pieces 303 in an arc shape. At this time, the 1st shoulder part 313 and the 2nd shoulder part 314 of the adjoining 2nd core piece 303,303 are engaged, and it contacts in the 2nd contact surface T6. The inner circumferential side of the first shoulder portion 313 has an arc shape, and an arc portion 315 is formed.

Next, a first action of the rotary electric machine according to Embodiment 3 of the present invention will be described.

As described above, in the divided iron core connecting member 300, in the state where each divided iron core 301 is arranged in an arc shape, the first arm portion 308 and the first arm portion 308 of the adjacent first core pieces 302 and 302 are formed. The two arm portions 309 make contact with the first contact surface T5. Moreover, the 1st shoulder part 313 and the 2nd shoulder part 314 of the adjoining 2nd core piece 303,303 are in contact with the 2nd contact surface T6. In this state, in each of the divided iron cores 301 constituting the divided iron core connecting body 300, the divided iron cores 301 adjacent to the divided iron cores 301 in the circumferential direction in a plane perpendicular to the stacking direction are formed. The thing which cannot shift relatively is shown below.

In FIG. 20A, the condition that the right divided iron core 301b can shift relative to the left divided iron core 301a is considered. First, as described above, the first arm portion 308a and the second arm portion 309b of the adjacent first core pieces 302a and 302b are in contact with each other at the first contact surface T5. Moreover, the 1st shoulder part 313a and the 2nd shoulder part 314b of the adjoining 2nd core piece 303a, 303b are in contact with the 2nd contact surface T6.

In FIG. 20A, since the first core pieces 302a and 302b do not interfere with each other, as shown in FIG. 20B, the first contact surface T5 and the surface orthogonal thereto are formed. In the direction contained in one angle range (alpha), it is necessary for the 1st core piece 302b of the right side to shift | deviate relatively with respect to the 1st core piece 302a of the left side.

In addition, since the 2nd core piece 303a, 303b does not interfere with each other in FIG. 20A, as shown to FIG. 20B, between the 2nd contact surface T6 and the surface orthogonal to it. In the direction included in the second angle range β, the second core piece 303b on the right side needs to shift relative to the second core piece 303a on the left side.

However, as shown in FIG. 20B, the common range does not exist in the first angle range α and the second angle range β. Therefore, it becomes impossible to shift the split iron core 301b on the right side relative to the split iron core 301a on the left side. That is, in the state in which the divided iron cores 301 are arranged in an arc shape, the divided iron cores 301 adjacent to the divided iron cores 301 in the circumferential direction in the plane perpendicular to the stacking direction in the divided iron cores 301. ) Cannot be relatively shifted.

As described above, in the rotary electric machine according to Embodiment 3 of the present invention, when the divided iron cores 301 are arranged in an arc shape, the first arm part 308 of the adjacent first core pieces 302 and 302 and While the second arm portion 309 is engaged, the first shoulder portion 313 and the second shoulder portion 314 of the adjacent second core pieces 303 and 303 are engaged, and any first core piece 302a is engaged. ) And a range of directions in which the first core piece 302b adjacent in the circumferential direction is relatively shifted in a plane perpendicular to the stacking direction, and the second core piece stacked on any of the first core pieces 302a. With respect to 303a, the range of the direction which the 2nd core piece 303b laminated | stacked on the 1st core piece 302b adjoining in the said circumferential direction can shift | deviate relatively in the plane perpendicular | vertical to a lamination direction does not overlap. Thereby, the core pieces adjacent to each other in the circumferential direction can be fixed by the shape of each core piece, so that it is not necessary to inject retainers between the respective core pieces or to fit the core pieces in the lamination direction. Material costs, processing costs, and equipment costs can be reduced.

Next, a second action of the rotary electric machine according to Embodiment 3 of the present invention will be described.

As described above, in the divided iron core 301, an arc portion 316 is formed on the inner circumferential side of the first arm portion 308 of the first core piece 302 (FIG. 19A). Moreover, the arc part 315 is formed in the inner peripheral side of the 1st shoulder part 313 of the 2nd core piece 303 (FIG. 19 (B)). Therefore, as shown in Fig. 21A, the right divided iron core 301b is rotated clockwise with respect to the left divided iron core 301a so that the left divided iron core 301a and the right divided iron core ( The outer circumferential side between 301b) may be opened to close the inner circumferential side.

In this state, when the surface where the first shoulder portion 313a and the second shoulder portion 314b contact each other is the fourth contact surface T7, as shown in FIG. 21B, the second angle range ( The direction of β is changed in the direction between the fourth contact surface T7 and the surface orthogonal thereto, resulting in a third angle range γ which is a common range between the first angle range α and the second angle range β. . Therefore, the right arm part 301b is shifted | deviated with respect to the left hand segment iron core 301a in the direction of a 3rd angle range (gamma), and the 1st arm part 308a of the 1st core piece 302a of the left side is shifted. And the second arm portion 309b of the first core piece 302b on the right side can be brought into contact with each other.

As shown to FIG. 17 and FIG. 18, the protrusion part 321 is provided in the 2nd arm part 309 of the 1st core piece 302 of the split iron core 1. As shown in FIG. In addition, a hole portion 322 is provided in the first shoulder portion 313 of the second core piece 303 of the divided iron core 1. The protruding portions 321 of the first core piece 302 are inserted into the hole portions 322 of the second core piece 303, so that the adjacent divided iron cores 301 are connected to each other.

According to such a structure, since adjacent division iron cores 301 are not isolate | separated, manufacture of a rotary electric machine can be made easier. Moreover, since the projection part 321 of the 1st core piece 302 can be provided by the dowel by the caulking at the time of a punching, the projection part 321 can be provided easily, without using a special facility.

FIG. 22A shows a state when the divided iron core 301 is in an open state and the magnet wire is wound around the magnetic pole piece portion 7 of the first core piece 302. In addition, FIG. 22B shows a state in which the divided iron core 301 is opened and the magnet wire is wound around the pole piece portion 12 of the second core piece 303.

Further, when winding by using a pliers on the pole pieces of one divided iron core 301, in the state where the other divided iron core 301 exists on the outer circumferential side than the back yoke portion, the divided iron core 301 different from the trajectory of the pliers is In order to interfere, the winding becomes difficult, but in the open state of the divided iron core 301, the divided iron cores 301 are rotated as they are connected to each other, so that the back yoke portion of one divided iron core 301 is rotated. It can be set as the state which does not have another division iron core 301 in the outer peripheral side. In this state, since the trajectory of the pliers and other divided iron cores 301 do not interfere, the production of rotary electric can be facilitated thereby.

23 shows a top view of a plurality of divided iron cores 301. When manufacturing each core piece, when each core piece is arranged in circular arc shape and punched out, the inner peripheral side of an arc will remain as remnants, but the material of each core piece is aligned by punching out each core piece in linear form. It is possible to improve the material yield of the steel sheet. Further, since the angle formed between the direction in which the magnetic pole pieces protrude and the direction in which the steel sheet is rolled is the same with respect to each core piece, the electronic deviation of each magnetic pole piece is reduced, and the efficiency of rotating electricity is improved.

The detailed structure of the hole part 322 of the 2nd core piece 303 is shown by FIG. In addition, in FIG. 25, the detail of the state in which the protrusion part 321 of the 1st core piece 302 was inserted in the hole part 322 of the 2nd core piece 303 is shown. As shown in these figures, the hole portion 322 of the second core piece 303 has an arc array hole portion 323, a linear alignment hole portion 324, and a connection hole portion 325. . In the circular arc arranging hole portion 323, the protrusion 321 of the first core piece 302 is positioned when the core pieces are arranged on the arc. In the linear alignment hole portion 324, the projection portion 321 of the first core piece 302 is positioned when the core pieces are aligned in a linear shape. The connection hole 325 connects the arc array hole 323 and the linear alignment hole 324.

According to such a structure, after punching each core piece in the state where the protrusion part 321 of the 1st core piece 302 is located in the linear alignment hole part 324 of the 2nd core piece 303, the protrusion part 321 ) Is wound around the pole piece 5 in a state where the linear alignment hole 324 or the connection hole 325 is located (see FIG. 22), and the protrusion 321 is positioned at the arc array hole 323. In the state, an iron core composed of a plurality of divided iron cores 301 can be inserted into the shaft of the rotary electric machine. Thereby, it is possible to carry out without separating the separate iron cores 301 and 301 from the punching in the state in which each core piece was linearly aligned, the winding of a magnet wire, and the insertion of the iron core into the axis of a rotary electric machine.

Other embodiment

The iron core of the rotary electric machine according to Embodiments 1, 2 and 3 is composed of three divided iron core connectors 100, 200 and 300, and each of the divided iron core connectors 100, 200 and 300 has six divided iron cores ( 1, 201, 301). However, in the present invention, the number of split iron core connectors and split iron cores is not limited to these. That is, the present invention can be implemented by any number of split iron core connectors and split iron cores.

Further, in the divided iron cores 1, 201, 301 according to the first, second, and third embodiments, the first core pieces 2, 202, 302 and the second core pieces 3, 203, 303 are alternately laminated. Although it has been mentioned, the lamination method of a 1st core piece and a 2nd core piece is not limited to this. For example, what laminated | stacked several or more successive laminated core pieces of the same kind may be laminated | stacked and comprised.

In addition, in the split iron cores 1, 201, and 301 according to the first, second, and third embodiments, it is necessary to connect core pieces adjacent to each other in the stacking direction by bonding or caulking, but the connection means is not particularly limited. . Similarly, the means for fixing the split iron core connectors 100, 200, and 300 can be considered, but it is not particularly limited.

After the iron core is inserted into the axis of the rotating electric machine, the divided iron core connecting members 100, 200, and 300 are united, and as a means for suppressing the movement of rotation in the circumferential direction, for example, one divided iron core 1, By providing a key groove in the back yoke portion of the 201 and 301 and fixing it using a machine key together with the key groove provided on the shaft of the rotary electric machine, the respective split iron core connecting bodies are integrated to rotate the circumferential direction. Although it can suppress, it does not specifically limit also about this.

Claims (10)

In a rotary electric machine composed of a split iron core connecting body in which a plurality of split iron cores are arranged in an arc shape,
The divided iron core is configured by laminating a first core piece and a second core piece,
The first core piece is provided at one end of the first core piece and is formed by a first convex portion and a first concave portion that is concave toward the inner circumferential side of the first convex portion, or the first core piece. Either or both of a second arm portion provided at the other end and engaged with the first convex portion and formed by the second convex portion engaged with the first concave portion,
The second core piece is provided at one end of the second core piece and is provided at a first shoulder portion formed by a third convex portion protruding in the circumferential direction, or at the other end of the second core piece, Either one or both of the 2nd shoulder part formed by the 3rd recessed part engaged with 3 convex part,
When the divided iron cores are arranged in an arc shape, the first arm portion and the second arm portion of the adjacent first core piece are engaged, and the first shoulder portion and the second shoulder of the adjacent second core piece are engaged. The addition is engaged,
With respect to each divided iron core, a range of directions in which the first core piece adjacent in the circumferential direction with respect to any of the first core pieces can be relatively shifted in a plane perpendicular to the stacking direction, and the first laminated piece on the first core piece. The range of the direction which the 2nd core piece laminated | stacked on the 1st core piece adjoining the said circumferential direction with respect to 2 core piece in the plane which can shift | deviate relatively in the plane perpendicular | vertical to a lamination direction does not overlap.
Rotational electricity. The method of claim 1,
A cutout is formed on the inner circumferential side of the first arm portion of the first core piece, and an arc portion is formed on the inner circumferential side of the first shoulder portion of the second core piece.
Rotational electricity. In a rotary electric machine composed of a split iron core connecting body in which a plurality of split iron cores are arranged in an arc shape,
The divided iron core is configured by laminating a first core piece and a second core piece,
The first core piece is provided at one end of the first core piece, and the first concave portion and the first arm portion are formed by a first convex portion protruding on the opposite side to the circumferential direction, or the Either or both of the second arm portions provided at the other end of the first core piece and formed by the second convex portion engaged with the first concave portion and the second concave portion engaged with the first convex portion Equipped,
The second core piece is provided at one end of the second core piece, and the third shoulder portion and the third shoulder portion are formed by a third concave portion concave on the opposite side in the circumferential direction, or the first shoulder portion. Either or both of a second shoulder portion provided at the other end of the second core piece and formed by a fourth concave portion engaged with the third convex portion and a fourth convex portion engaged with the third concave portion is provided. and,
When the divided iron cores are arranged in an arc shape, the first arm portion and the second arm portion of the adjacent first core piece are engaged, and the first shoulder portion and the second shoulder of the adjacent second core piece are engaged. The addition is engaged,
With respect to each divided iron core, a range of directions in which the first core piece adjacent in the circumferential direction with respect to any of the first core pieces can be relatively shifted in a plane perpendicular to the stacking direction, and the first laminated piece on the first core piece. The range of the direction which the 2nd core piece laminated | stacked on the 1st core piece adjoining the said circumferential direction with respect to 2 core piece in the plane which can shift | deviate relatively in the plane perpendicular | vertical to a lamination direction does not overlap.
Rotational electricity. The method of claim 3, wherein
A cutout is formed on the inner circumferential side of the first arm portion of the first core piece, and an arc portion is formed on the inner circumferential side of the first shoulder portion of the second core piece.
Rotational electricity. The method according to any one of claims 1 to 4,
The second arm portion of the first core piece is provided with a projection, and the first shoulder portion of the second core piece is provided with a hole, and the projection of the first core piece is provided in the hole of the second core piece. By being inserted, the adjacent divided cores are connected
Rotational electricity. The method of claim 5,
The hole portion of the second core piece is a circular arc arrangement hole portion in which the protrusion of the first core piece is located when the split iron core is arranged on a circular arc, and the second core piece is arranged when the split iron core is linearly aligned. It has a linear alignment hole part in which the said projection part of 1 core piece is located, the said circular arc arrangement hole part, and the connection hole part which connects the said linear alignment hole part, It is characterized by the above-mentioned.
Rotational electricity. In the manufacturing method of the rotary electric machine which consists of a split iron core coupling body in which several divided iron cores are arranged in circular arc shape,
The divided iron core is configured by laminating a first core piece and a second core piece,
The first core piece is provided at one end of the first core piece and is formed by a first convex portion and a first concave portion that is concave toward the inner circumferential side of the first convex portion, or the first core piece. It is provided at the other end and is provided with any one or both of the 2nd recessed part engaged with the said 1st convex part, and the 2nd arm part formed by the 2nd convex part engaged with the said 1st concave part,
The second core piece is provided at one end of the second core piece and is provided at a first shoulder portion formed by a third convex portion protruding in the circumferential direction, or at the other end of the second core piece, Either one or both of the 2nd shoulder part formed by the 3rd recessed part engaged with 3 convex part,
When the divided iron cores are arranged in an arc shape, the first arm portion and the second arm portion of the adjacent first core piece are engaged, and the first shoulder portion and the second shoulder of the adjacent second core piece are engaged. The addition is engaged,
With respect to each divided iron core, a range of directions in which the first core piece adjacent in the circumferential direction with respect to any of the first core pieces can be relatively shifted in a plane perpendicular to the stacking direction, and the first laminated piece on the first core piece. The range of the direction which the 2nd core piece laminated | stacked on the 1st core piece adjoining the said circumferential direction with respect to 2 core pieces in the direction which can shift relatively in the plane perpendicular | vertical to a lamination direction does not overlap,
A cutout is formed on the inner circumferential side of the first arm portion of the first core piece, and an arc portion is formed on the inner circumferential side of the first shoulder portion of the second core piece.
The second arm portion of the first core piece is provided with a projection, and the first shoulder portion of the second core piece is provided with a hole, and the projection of the first core piece is provided in the hole of the second core piece. By being inserted, the adjacent divided cores are connected to each other,
The hole portion of the second core piece is a circular arc arrangement hole portion in which the protrusion of the first core piece is located when the split iron core is arranged on a circular arc, and the second core piece is arranged when the split iron core is linearly aligned. A linear alignment hole portion in which the protrusion of the one core piece is located;
The protruding portion of the first core piece is provided by a dowel by caulking at the time of punching.
Method of manufacturing rotary electric. In the manufacturing method of the rotary electric machine which consists of a split iron core coupling body in which several divided iron cores are arranged in circular arc shape,
The divided iron core is configured by laminating a first core piece and a second core piece,
The first core piece is provided at one end of the first core piece, and the first concave portion and the first arm portion are formed by a first convex portion protruding to the opposite side with respect to the circumferential direction, or the Either or both of the second arm portions provided at the other end of the first core piece and formed by the second convex portion engaged with the first concave portion and the second concave portion engaged with the first convex portion Equipped,
The second core piece is provided at one end of the second core piece, and the third shoulder portion and the third shoulder portion are formed by a third concave portion concave on the opposite side in the circumferential direction, or the first shoulder portion. Either or both of a second shoulder portion provided at the other end of the second core piece and formed by a fourth concave portion engaged with the third convex portion and a fourth convex portion engaged with the third concave portion is provided. ,
When the divided iron cores are arranged in an arc shape, the first arm portion and the second arm portion of the adjacent first core piece are engaged, and the first shoulder portion and the second shoulder of the adjacent second core piece are engaged. The addition is engaged,
With respect to each divided iron core, a range of directions in which the first core piece adjacent in the circumferential direction with respect to any of the first core pieces can be relatively shifted in a plane perpendicular to the stacking direction, and the first laminated piece on the first core piece. The range of the direction which the 2nd core piece laminated | stacked on the 1st core piece adjoining the said circumferential direction with respect to 2 core pieces in the direction which can shift relatively in the plane perpendicular | vertical to a lamination direction does not overlap,
An arc portion is formed on the inner circumferential side of the first arm portion of the first core piece, and an arc portion is formed on the inner circumferential side of the first shoulder portion of the second core piece.
The second arm portion of the first core piece is provided with a projection, and the first shoulder portion of the second core piece is provided with a hole, and the projection of the first core piece is provided in the hole of the second core piece. By being inserted, the adjacent divided cores are connected to each other,
The hole portion of the second core piece is a circular arc arrangement hole portion in which the protrusion of the first core piece is located when the split iron core is arranged on a circular arc, and the second core piece is arranged when the split iron core is linearly aligned. It has a linear alignment hole part in which the said projection part of one core piece is located, and the connection hole part which connects the said circular arc arrangement hole part and the said linear alignment hole part,
The protruding portion of the first core piece is provided by a dowel by caulking at the time of punching.
Method of manufacturing rotary electric. The method according to claim 7 or 8,
For punching the first core piece and the second core piece in a state where the protrusion of the first core piece is located in the linear alignment hole of the second core piece.
Method of manufacturing rotary electric. The method according to any one of claims 7 to 9,
The magnet wire is wound around the magnetic pole piece of the divided iron core in a state where the protrusion part of the first core piece is located in the linear alignment hole part or the connection hole part of the second core piece.
Method of manufacturing rotary electric.

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