WO2021200944A1 - 固定子、回転子及び回転電機 - Google Patents
固定子、回転子及び回転電機 Download PDFInfo
- Publication number
- WO2021200944A1 WO2021200944A1 PCT/JP2021/013536 JP2021013536W WO2021200944A1 WO 2021200944 A1 WO2021200944 A1 WO 2021200944A1 JP 2021013536 W JP2021013536 W JP 2021013536W WO 2021200944 A1 WO2021200944 A1 WO 2021200944A1
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- WIPO (PCT)
- Prior art keywords
- stator
- constituent
- normal
- magnetic gap
- farthest
- Prior art date
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- Ceased
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/14—Stator cores with salient poles
- H02K1/146—Stator cores with salient poles consisting of a generally annular yoke with salient poles
- H02K1/148—Sectional cores
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
- H02K1/185—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures to outer stators
Definitions
- the present invention relates to a stator, a rotor and a rotary electric machine.
- a plurality of plate-shaped stator cores constituting a stator of a rotary electric machine are composed of an annular fixing portion and a teeth portion formed in a T shape by a leg piece and a teeth piece.
- the base end portion of the leg piece of the tooth portion is fitted into a plurality of recessed grooves recessed in the fixed portion to be integrated, and the fixed portion and the tooth portion are fitted to an arbitrary portion in the fitting portion.
- a notch having a circular shape is formed at A rotary electric machine characterized in that a fixing pin having a diameter is press-fitted to integrate the fixing portion and the tooth portion ”is described.
- the present invention provides a stator, a rotor, and a rotating electric machine capable of suppressing cogging and ripple caused by gaps between core split bodies.
- One aspect of the present disclosure is press-fitted into a pin press-fit hole formed by a plurality of core splits having notches extending along the axial direction and the notches provided in each of the adjacent core splits and facing each other.
- a stator comprising a plurality of pins, each of the plurality of core divided bodies has a first surface closest to the magnetic gap portion, a second surface closest to the magnetic gap portion next to the first surface, and a second surface closest to the magnetic gap portion.
- a divided surface composed of four or more constituent surfaces extending along the axial direction, including three surfaces of the farthest surface farthest from the magnetic gap portion, and the first surface and the second surface.
- the pin press-fitting surface provided with the notch has a normal direction of the out-of-plane direction of the first surface or the out-of-plane direction of the second surface. It is a stator that is suitable.
- one aspect of the present disclosure is for a pin press-fitting hole formed by a plurality of core divisions having notches extending along the axial direction and the notches provided in each of the adjacent core divisions and facing each other.
- a stator comprising a plurality of pins to be press-fitted, wherein the plurality of core dividers are the first surface closest to the magnetic gap portion, the second surface closest to the first surface, and the second closest to the magnetic gap portion, respectively.
- One of the constituent surfaces other than the second surface, the pin press-fitting surface provided with the notch has a normal direction outside the surface of the first surface or outside the surface of the second surface.
- a rotor that is facing in the direction.
- cogging and ripple caused by gaps between core split bodies can be suppressed.
- FIG. 5 is an exploded cross-sectional view showing a part of a stator equivalent to the stator shown in FIG. 9A. It is an exploded cross-sectional view which shows the part of another stator explaining the number of constituent planes which make up a split plane.
- FIG. 5 is an exploded cross-sectional view showing a part of a stator equivalent to the stator shown in FIG. 10A.
- FIG. 1 is a cross-sectional view showing a part of the stator 1.
- the stator 1 shown in FIG. 1 constitutes an electric machine (reference numeral omitted) as a rotary electric machine together with a rotor (not shown) arranged on the radial inner DR2 (lower side in FIG. 1) of the stator 1.
- the stator 1 includes a plurality of core dividing bodies 10, a plurality of pins P, a plurality of coils (not shown), and the like.
- the plurality of core divided bodies 10 are divided into each other by the divided surfaces 100 that extend along the axial direction (the direction that penetrates the paper surface in FIG. 1) and face each other.
- the plurality of core divided bodies 10 have a structure in which they are fitted by sliding each other in the axial direction.
- the dividing surface 100 is composed of five constituent surfaces 11, 12, 13, 14, and 15 extending along the axial direction.
- the division surface 100 and the constituent surfaces 11 to 15 have the same reference numerals in the adjacent core division bodies 10 and 10.
- the first surface 11, which is the first constituent surface is closest to the magnetic gap portion G (diameter inner DR2), which is a gap between the stator 1 and the rotor (not shown).
- the second surface 12, which is the second constituent surface is a surface continuous with the first surface 11, and is closest to the magnetic gap portion G next to the first surface 11.
- the third surface 13, which is the third constituent surface is a surface continuous with the second surface 12, and is closest to the magnetic gap portion G next to the second surface 12.
- the fourth surface 14, which is the fourth constituent surface, is a surface continuous with the third surface 13, and is closest to the magnetic gap portion G next to the third surface 13.
- the fourth surface 14 constitutes a pin press-fitting surface provided with a notch portion 14a having a substantially semicircular cross section extending along the axial direction.
- the notch 14a provided in each of the adjacent core divided bodies 10 and facing each other constitutes a pin press-fit hole having a substantially circular cross section (not closed circular shape) extending along the axial direction.
- the fifth surface 15, which is the fifth constituent surface is a surface continuous with the fourth surface 14 and constitutes the "farthest surface" farthest from the magnetic gap portion G.
- the facing fifth surface (farthest surface) 15 is fixed by welding W.
- Each of the plurality of pins P is press-fitted into the pin press-fitting holes.
- the pin press-fitting holes are formed by notches 14a provided in each of the adjacent core split bodies 10 and facing each other.
- FIG. 2 is a schematic view illustrating the direction nP of the normal of the fourth surface (pin press-fitting surface) 14 of the stator 1.
- FIG. 2 is a schematic view in which the first surface 11, the second surface 12, and the fourth surface (pin press-fitting surface) 14 are virtually superimposed and displayed.
- the out-of-plane direction of the first surface 11 is indicated by the first hatching (hatching by diagonal lines descending from the upper right to the left), and the direction of the normal of the first surface 11 is indicated by an arrow n1.
- the out-of-plane direction of the second surface 12 is indicated by a second hatching (hatching by a diagonal line descending from the upper left to the right), and the direction of the normal line of the second surface 12 is indicated by an arrow n2.
- the direction of the normal of the fourth surface (pin press-fitting surface) 14 is indicated by an arrow nP.
- the out-of-plane direction of the first surface 11 and the out-of-plane direction of the second surface 12 are indicated by hatching (cross hatching) in which both the first hatching and the second hatching are overlapped.
- the direction nP of the normal of the fourth surface (pin press-fitting surface) 14 faces the out-of-plane direction of the first surface 11 and the out-of-plane direction of the second surface 12. ing. Further, the direction nP of the normal of the fourth surface (pin press-fitting surface) 14 is oriented between the direction n1 of the normal of the first surface 11 and the direction n2 of the normal of the second surface 12.
- the plurality of core divided bodies 10 are the first surface 11 closest to the magnetic gap portion G, the second surface 12 closest to the magnetic gap portion G next to the first surface 11, and the farthest from the magnetic gap portion G. It is divided into each other by a dividing surface 100 composed of four or more constituent surfaces 11, 12, 13, 14, and 15 extending along the axial direction including the three surfaces of the fifth surface (farthest surface) 15.
- the fourth surface (pin press-fitting surface) 14 is one of the constituent surfaces other than the first surface 11 and the second surface 12, and the normal direction nP is the out-of-plane direction or the second surface of the first surface 11. It is a surface facing the out-of-plane direction of twelve.
- the plurality of pins P are press-fitted into the pin press-fitting holes provided in the adjacent core dividing bodies 10 and formed by the notches 14a facing each other.
- the fourth surface (pin) 14 Since the direction nP of the normal of the press-fitting surface) 14 faces the out-of-plane direction of the first surface 11 or the out-of-plane direction of the second surface 12, the second surface closer to the magnetic gap portion G in the adjacent core dividing body 10.
- One side 11 can be brought into close contact with each other or the second side 12 can be brought into close contact with each other.
- cogging and ripple caused by the gap between the core split bodies 10 can be suppressed.
- the core split body 10 can be assembled with high accuracy.
- the fourth surface (pin press-fitting surface) 14 is a constituent surface other than the fifth surface (farthest surface) 15, and the normal direction nP is the normal direction n1 of the first surface 11. It is preferable that the surface is oriented in the direction between the normal and the normal direction n2 of the second surface 12.
- the direction nP of the normal of the fourth surface (pin press-fitting surface) 14 is between the direction n1 of the normal of the first surface 11 and the direction n2 of the normal of the second surface 12. Since it faces the direction of, the first surfaces 11 and the second surfaces 12 close to the magnetic gap portion G in the adjacent core divided body 10 can be brought into close contact with each other. As a result, cogging and ripple caused by the gap between the core split bodies 10 can be further suppressed. In addition, the core split body 10 can be assembled with higher accuracy.
- the fifth surface (farthest surface) 15 facing each other is fixed by welding W.
- the fifth surface (farthest surface) 15 facing each other in the adjacent core split body 10 is fixed by welding W, so that the rigidity can be increased.
- FIG. 3 is a cross-sectional view showing a part of the rotor 2.
- the rotor 2 shown in FIG. 3 constitutes an electric motor (reference numeral omitted) together with a stator (not shown) arranged on the radial outer DR1 (upper side in FIG. 3) of the rotor 2.
- the rotor 2 includes a plurality of core divided bodies 20, a plurality of pins P, a plurality of permanent magnets (not shown), and the like.
- the plurality of core divided bodies 20 are divided by the divided surfaces 200 that extend along the axial direction (the direction that penetrates the paper surface in FIG. 3) and face each other.
- the plurality of core divided bodies 20 have a structure in which they are fitted by sliding each other in the axial direction.
- the dividing surface 200 is composed of five constituent surfaces 21, 22, 23, 24, 25 extending along the axial direction.
- the first surface 21, which is the first constituent surface is closest to the magnetic gap portion G (diameter inner DR2), which is a gap between the rotor 2 and the stator (not shown).
- the second surface 22, which is the second constituent surface is a surface continuous with the first surface 21, and is closest to the magnetic gap portion G next to the first surface 21.
- the third surface 23, which is the third constituent surface is a surface continuous with the second surface 22, and is closest to the magnetic gap portion G next to the second surface 22.
- the fourth surface 24, which is the fourth constituent surface, is a surface continuous with the third surface 23, and is closest to the magnetic gap portion G next to the third surface 23.
- the fourth surface 24 constitutes a pin press-fitting surface provided with a notch portion 24a having a substantially semicircular cross section extending along the axial direction.
- the notch 24a provided in each of the adjacent core divisions 20 and facing each other constitutes a pin press-fit hole having a substantially circular cross section (not closed circular shape) extending along the axial direction.
- the fifth surface 25, which is the fifth constituent surface, is a surface continuous with the fourth surface 24 and constitutes the "farthest surface" farthest from the magnetic gap portion G.
- Each of the plurality of pins P is press-fitted into the pin press-fitting holes.
- the pin press-fitting holes are formed by notches 24a provided in each of the adjacent core dividing bodies 20 and facing each other.
- FIG. 4 is a schematic view illustrating the direction nP of the normal line of the fourth surface (pin press-fitting surface) 24 of the rotor 2.
- FIG. 4 is a schematic view in which the first surface 21, the second surface 22, and the fourth surface (pin press-fitting surface) 24 are virtually superimposed and displayed.
- the out-of-plane direction of the first surface 21 is indicated by the first hatching (hatching by diagonal lines descending from the upper right to the left), and the direction of the normal of the first surface 21 is indicated by an arrow n1.
- the out-of-plane direction of the second surface 22 is indicated by a second hatching (hatching by a diagonal line descending from the upper left to the right), and the direction of the normal line of the second surface 22 is indicated by an arrow n2.
- the direction of the normal of the fourth surface (pin press-fitting surface) 24 is indicated by an arrow nP.
- the out-of-plane direction of the first surface 21 and the out-of-plane direction of the second surface 22 are indicated by hatching (cross hatching) in which both the first hatching and the second hatching are overlapped.
- the direction nP of the normal of the fourth surface (pin press-fitting surface) 24 faces the out-of-plane direction of the first surface 21 and the out-of-plane direction of the second surface 22. ing. Further, the direction nP of the normal of the fourth surface (pin press-fitting surface) 24 is oriented between the direction n1 of the normal of the first surface 21 and the direction n2 of the normal of the second surface 22.
- the plurality of core divided bodies 20 are the closest to the magnetic gap portion G, the first surface 21, the second surface 22 closest to the magnetic gap portion G next to the first surface 21, and the farthest from the magnetic gap portion G. It is divided into each other by a dividing surface 200 composed of four or more constituent surfaces 21, 22, 23, 24, 25 extending along the axial direction including the three surfaces of the fifth surface (farthest surface) 25.
- the fourth surface (pin press-fitting surface) 24 is one of the constituent surfaces other than the first surface 21 and the second surface 22, and the normal direction nP is the out-of-plane direction or the second surface of the first surface 21. It is a surface facing the out-of-plane direction of 22.
- the plurality of pins P are press-fitted into the pin press-fitting holes provided in the adjacent core dividing bodies 20 and formed by the notches 24a facing each other.
- the normal direction nP of the fourth surface (pin press-fitting surface) 24 faces the out-of-plane direction of the first surface 21 or the out-of-plane direction of the second surface 22.
- the first surfaces 21 or the second surfaces 22 close to the magnetic gap portion G in the adjacent core divided body 20 can be brought into close contact with each other.
- cogging and ripple caused by the gap between the core split bodies 20 can be suppressed.
- the core split body 20 can be assembled with high accuracy.
- the fourth surface (pin press-fitting surface) 24 is a constituent surface other than the fifth surface (farthest surface) 25, and the normal direction nP is the normal direction n1 of the first surface 21. It is preferable that the surface is oriented in the direction between the normal and the normal direction n2 of the second surface 22.
- the direction nP of the normal of the fourth surface (pin press-fitting surface) 24 is between the direction n1 of the normal of the first surface 21 and the direction n2 of the normal of the second surface 22. Therefore, the first surfaces 21 and the second surfaces 22 close to the magnetic gap portion G in the core divisions 20 adjacent to each other can be brought into close contact with each other. As a result, cogging and ripple caused by the gap between the core split bodies 20 can be further suppressed. In addition, the core split body 20 can be assembled with higher accuracy.
- FIG. 5 is a cross-sectional view showing a part of the stator 3.
- the stator 3 shown in FIG. 5 constitutes an electric motor (reference numeral omitted) together with a rotor (not shown) arranged on the radial inner DR2 (lower side in FIG. 5) of the stator 3.
- the stator 3 includes a plurality of core dividing bodies 30, a plurality of pins P, a plurality of coils (not shown), and the like.
- the plurality of core divided bodies 30 are divided into each other by the divided surfaces 300 that extend along the axial direction (the direction that penetrates the paper surface in FIG. 5) and face each other.
- the plurality of core divided bodies 30 have a structure in which they are fitted by sliding each other in the axial direction.
- the dividing surface 300 is composed of eight constituent surfaces 31, 32, 33, 34, 35, 36, 37, 38 extending along the axial direction.
- the first surface 31, which is the first constituent surface is closest to the magnetic gap portion G (diameter inner DR2), which is a gap between the stator 3 and the rotor (not shown).
- the second surface 32, which is the second constituent surface is a surface continuous with the first surface 31, and is closest to the magnetic gap portion G next to the first surface 31.
- the third surface 33 which is the third constituent surface, is a surface continuous with the second surface 32, and is closest to the magnetic gap portion G next to the second surface 32.
- the fourth surface 34, which is the fourth constituent surface is a surface continuous with the third surface 33, and is closest to the magnetic gap portion G next to the third surface 33.
- the fifth surface 35 which is the fifth constituent surface, is a surface continuous with the fourth surface 34, and is closest to the magnetic gap portion G next to the fourth surface 34.
- the sixth surface 36 which is the sixth constituent surface, is closest to the magnetic gap portion G next to the fifth surface 35.
- the seventh surface 37 which is the seventh constituent surface, is closest to the magnetic gap portion G next to the sixth surface 36.
- the seventh surface constitutes a pin press-fitting surface provided with a notch 37a having a substantially semicircular cross section extending along the axial direction.
- the notch 37a provided in each of the adjacent core divided bodies 30 and facing each other constitutes a pin press-fit hole having a substantially circular cross section (not closed circular shape) extending along the axial direction.
- the eighth surface 38 which is the eighth constituent surface, is a surface continuous with the seventh surface 37 and constitutes the "farthest surface" farthest from the magnetic gap portion G.
- the facing eighth surface (farthest surface) 38 is fixed by welding W.
- the pin press-fitting holes are formed by notches 37a provided in each of the adjacent core dividing bodies 30 and facing each other.
- FIG. 6 is a schematic view illustrating the direction nP of the normal line of the seventh surface (pin press-fitting surface) 37 of the stator 3.
- FIG. 6 is a schematic view in which the first surface 31, the second surface 32, and the seventh surface (pin press-fitting surface) 37 are virtually superimposed and displayed.
- the out-of-plane direction of the first surface 31 is indicated by the first hatching (hatching by diagonal lines descending from the upper right to the left), and the direction of the normal of the first surface 31 is indicated by an arrow n1.
- the out-of-plane direction of the second surface 32 is indicated by a second hatching (hatching by a diagonal line descending from the upper left to the right), and the direction of the normal line of the second surface 32 is indicated by an arrow n2.
- the direction of the normal of the seventh surface (pin press-fitting surface) 37 is indicated by an arrow nP.
- the out-of-plane direction of the first surface 31 and the out-of-plane direction of the second surface 32 are indicated by hatching (cross hatching) in which both the first hatching and the second hatching are overlapped.
- the direction nP of the normal of the seventh surface (pin press-fitting surface) 37 faces the out-of-plane direction of the first surface 31 and the out-of-plane direction of the second surface 32. ing. Further, the direction nP of the normal of the seventh surface (pin press-fitting surface) 37 is oriented between the direction n1 of the normal of the first surface 31 and the direction n2 of the normal of the second surface 32.
- the plurality of core divided bodies 30 are the closest to the magnetic gap portion G, the first surface 31, the second surface 32 closest to the magnetic gap portion G next to the first surface 31, and the farthest from the magnetic gap portion G.
- Divided surfaces 300 consisting of four or more constituent surfaces 31, 32, 33, 34, 35, 36, 37, 38 extending along the axial direction including the three surfaces of the eighth surface (farthest surface) 38, and each other. It is divided.
- the seventh surface (pin press-fitting surface) 37 is one of the constituent surfaces other than the first surface 31 and the second surface 32, and the normal direction nP is the out-of-plane direction or the second surface of the first surface 31. It is a surface facing the out-of-plane direction of 32.
- the plurality of pins P are press-fitted into the pin press-fitting holes provided in the adjacent core divisions 30 and formed by the notches 37a facing each other.
- the direction nP of the normal of the seventh surface (pin press-fitting surface) 37 faces the out-of-plane direction of the first surface 31 or the out-of-plane direction of the second surface 32.
- the first surfaces 31 or the second surfaces 32 close to the magnetic gap portion G in the adjacent core divided body 30 can be brought into close contact with each other.
- cogging and ripple caused by the gap between the core split bodies 30 can be suppressed.
- the core split body 30 can be assembled with high accuracy.
- the seventh surface (pin press-fitting surface) 37 is a constituent surface other than the eighth surface (farthest surface) 38, and the normal direction nP is the normal direction n1 of the first surface 31. It is preferable that the surface is oriented in the direction between the normal and the normal direction n2 of the second surface 32.
- the direction nP of the normal of the seventh surface (pin press-fitting surface) 37 is between the direction n1 of the normal of the first surface 31 and the direction n2 of the normal of the second surface 32. Therefore, the first surfaces 31 and the second surfaces 32 close to the magnetic gap portion G in the adjacent core split 30 can be brought into close contact with each other. As a result, cogging and ripple caused by the gap between the core split bodies 30 can be further suppressed. In addition, the core split body 30 can be assembled with higher accuracy.
- the eighth surface (farthest surface) 38 facing each other is fixed by welding W.
- the eighth surface (farthest surface) 38 facing each other in the adjacent core split body 30 is fixed by welding W, so that the rigidity can be increased.
- FIG. 7 is a cross-sectional view showing a part of the stator 4.
- the stator 4 shown in FIG. 7 constitutes an electric motor (reference numeral omitted) together with a rotor (not shown) arranged on the radial inner DR2 (lower side in FIG. 7) of the stator 4.
- the stator 4 includes a plurality of core dividing bodies 40, a plurality of pins P, a plurality of coils (not shown), and the like.
- the plurality of core divided bodies 40 are divided into each other by the divided surfaces 400 that extend along the axial direction (the direction that penetrates the paper surface in FIG. 7) and face each other.
- the plurality of core divided bodies 40 have a structure in which they are fitted by sliding each other in the axial direction.
- the dividing surface 400 is composed of four constituent surfaces 41, 42, 43, 44 extending in the axial direction.
- the first surface 41 which is the first constituent surface, is closest to the magnetic gap portion G (diameter inner DR2), which is a gap between the stator 4 and the rotor (not shown).
- the second surface 42 which is the second constituent surface, is a surface continuous with the first surface 41, and is closest to the magnetic gap portion G next to the first surface 41.
- the third surface 43 which is the third constituent surface, is a surface continuous with the second surface 42, and is closest to the magnetic gap portion G next to the second surface 42.
- the fourth surface 44 which is the fourth constituent surface, is a surface continuous with the third surface 43, and constitutes the farthest surface farthest from the magnetic gap portion G.
- the fourth surface 44 constitutes a pin press-fitting surface provided with a notch 44a having a substantially semicircular cross section extending along the axial direction.
- the notch 44a provided in each of the adjacent core divided bodies 40 and facing each other constitutes a pin press-fit hole having a substantially circular cross section (not closed circular shape) extending along the axial direction.
- the facing fourth surface (farthest surface) 44 is fixed by welding W.
- Each of the plurality of pins P is press-fitted into the pin press-fitting holes.
- the pin press-fitting holes are formed by notches 44a provided in each of the adjacent core dividing bodies 40 and facing each other.
- FIG. 8 is a schematic view illustrating the direction nP of the normal line of the fourth surface (pin press-fitting surface) 44 of the stator 4.
- FIG. 8 is a schematic view in which the first surface 41, the second surface 42, and the fourth surface (pin press-fitting surface) 44 are virtually superimposed and displayed.
- the out-of-plane direction of the first surface 41 is indicated by the first hatching (hatching by diagonal lines descending from the upper right to the left), and the direction of the normal of the first surface 41 is indicated by an arrow n1.
- the out-of-plane direction of the second surface 42 is indicated by a second hatching (hatching by a diagonal line descending from the upper left to the right), and the direction of the normal line of the second surface 42 is indicated by an arrow n2.
- the direction of the normal of the fourth surface (pin press-fitting surface) 44 is indicated by an arrow nP.
- the out-of-plane direction of the first surface 41 and the out-of-plane direction of the second surface 42 are indicated by hatching (cross hatching) in which both the first hatching and the second hatching are overlapped.
- the direction nP of the normal line of the fourth surface (pin press-fitting surface) 14 faces the out-of-plane direction of the second surface 42.
- the plurality of core divided bodies 40 are the closest to the magnetic gap portion G, the first surface 41, the second surface 42 closest to the magnetic gap portion G next to the first surface 41, and the farthest from the magnetic gap portion G. It is divided into each other by a dividing surface 400 composed of four or more constituent surfaces 41, 42, 43, 44 extending along the axial direction including the three surfaces of the fourth surface (farthest surface) 44.
- the fourth surface (pin press-fitting surface) 44 is one of the constituent surfaces other than the first surface 41 and the second surface 42, and the normal direction nP faces the out-of-plane direction of the second surface 42. It is a face.
- the plurality of pins P are press-fitted into the pin press-fitting holes provided in the adjacent core dividing bodies 40 and formed by the notches 44a facing each other.
- the magnetic gap in the adjacent core dividing body 40 can be brought into close contact with each other.
- cogging and ripple caused by the gap between the core split bodies 40 can be suppressed.
- the core split body 40 can be assembled with high accuracy.
- the facing fourth surface (farthest surface) 44 is fixed by welding W.
- the fourth surface (farthest surface) 44 facing each other in the adjacent core split body 40 is fixed by welding W, so that the rigidity can be increased.
- FIG. 9A is a diagram for explaining the number of constituent surfaces constituting the divided surfaces 500 and 600, and is an exploded cross-sectional view showing a part of the stator 5.
- FIG. 9B is an exploded cross-sectional view showing a part of the stator 5A which is equivalent to the stator 5.
- the adjacent core divided bodies 50 and 60 are divided into each other by the divided surfaces 500 and 600 that extend along the axial direction (the direction that penetrates the paper surface in FIG. 9A) and face each other.
- the adjacent core split bodies 50 and 60 have a structure in which they are fitted by sliding each other in the axial direction.
- the dividing surface 500 is composed of five constituent surfaces 51, 52, 53, 54, 55 extending along the axial direction, and two chamfered surfaces 56, 57.
- the direction of the normal of the first surface 51, which is the first constituent surface, is indicated by an arrow n1.
- the chamfered surface 56, which is the first chamfered surface is a surface continuous with the first surface 51.
- the second surface 52, which is the second constituent surface is a surface continuous with the chamfered surface 56, and the direction of the normal line is indicated by an arrow n2.
- the third surface 53 which is the third constituent surface, is a surface continuous with the second surface 52, and the direction of the normal line is indicated by an arrow n3.
- the fourth surface 54 which is the fourth constituent surface, is a surface continuous with the third surface 53, and the direction of the normal line is indicated by an arrow n4.
- the chamfered surface 57 which is the second chamfered surface, is a surface continuous with the fourth surface.
- the fifth surface 55 which is the fifth constituent surface, is a surface continuous with the chamfered surface 57, and the direction of the normal line is indicated by an arrow n5.
- the dividing surface 600 is composed of five constituent surfaces 61, 62, 63, 64, 65 extending along the axial direction, and two chamfered surfaces 66, 67.
- the first surface 61 which is the first constituent surface, is a surface continuous with the chamfered surface 66, which is the first chamfered surface, and the direction of the normal line is indicated by an arrow n1.
- the second surface 62 which is the second constituent surface, is a surface continuous with the first surface 61, and the direction of the normal line is indicated by an arrow n2.
- the third surface 63 which is the third constituent surface, is a surface continuous with the second surface 62, and the direction of the normal line is indicated by an arrow n3.
- the chamfered surface 67 which is the second chamfered surface, is a surface continuous with the third surface 63.
- the fourth surface 64 which is the fourth constituent surface, is a surface continuous with the chamfered surface 67, and the direction of the normal line is indicated by an arrow n4.
- the fifth surface 65 which is the fifth constituent surface, is a surface continuous with the fourth surface 64, and the direction of the normal line is indicated by an arrow n5.
- the first surface 51 of the dividing surface 500 and the first surface 61 of the dividing surface 600 have normals in the corresponding directions n1, and each of them is counted (counted) as the corresponding constituent surface.
- the second surface 52 of the dividing surface 500 and the second surface 62 of the dividing surface 600 have normals in the corresponding directions n2, and are counted as corresponding constituent surfaces.
- the third surface 53 of the dividing surface 500 and the third surface 63 of the dividing surface 600 have normals in the corresponding directions n3, and are counted as corresponding constituent surfaces.
- the fourth surface 54 of the dividing surface 500 and the fourth surface 64 of the dividing surface 600 have normals in the corresponding directions n4, and are counted as corresponding constituent surfaces.
- the fifth surface 55 of the dividing surface 500 and the fifth surface 65 of the dividing surface 600 have normals in the corresponding directions n5, and each of them is counted as a corresponding constituent surface.
- the chamfered surfaces 56 and 57 of the divided surface 500 and the chamfered surfaces 66 and 67 of the divided surface 600 do not have corresponding normals and are not counted (not counted) as constituent surfaces.
- the stator 5 shown in FIG. 9A is equivalent to the stator 5A shown in FIG. 9B.
- the stator 5A differs from the stator 5 in that the dividing surface 500A replacing the dividing surface 500 does not have chamfered surfaces 56 and 57, and the stator 5A does not have chamfered surfaces 56 and 57, and the stator 5A is divided instead of the dividing surface 600.
- the surface 600A does not have chamfered surfaces 66,67.
- the other configurations of the stator 5A are the same as those of the stator 5, and the same configurations are designated by the same reference numerals as those of the stator 5, and the description thereof will be omitted.
- FIG. 10A is an exploded cross-sectional view showing a part of the stator 7 for explaining the number of constituent surfaces constituting the divided surfaces 700 and 800.
- FIG. 10B is an exploded cross-sectional view showing a part of the stator 7A which is equivalent to the stator 7.
- the adjacent core divided bodies 70 and 80 are divided into each other by the divided surfaces 700 and 800 that extend along the axial direction (the direction penetrating the paper surface in FIG. 10A) and face each other.
- the adjacent core split bodies 70 and 80 have a structure in which they are fitted by sliding each other in the axial direction.
- the dividing surface 700 includes three constituent surfaces 71, 72, 73 extending along the axial direction.
- the direction of the normal of the first surface 71, which is the first constituent surface, is indicated by an arrow n1.
- the second surface 72, which is the second constituent surface is a surface continuous with the first surface 71, and the direction of the normal line is indicated by an arrow n2.
- the third surface 73, which is the third constituent surface is a surface continuous with the second surface 72, and the direction of the normal line is indicated by an arrow n3.
- the dividing surface 800 is a curved surface extending along the axial direction.
- the divided surface 800 has innumerable directions including the directions indicated by arrows n1, n2, and n3.
- the first surface 71 and the dividing surface 800 of the dividing surface 700 have normals in the corresponding directions n1, and each of them is counted as a corresponding constituent surface.
- the second surface 72 and the divided surface 800 of the divided surface 700 have normals in the corresponding directions n2, and each is counted as a corresponding constituent surface.
- the third surface 73 and the divided surface 800 of the divided surface 700 have normals in the corresponding directions n3, and each of them is counted as a corresponding constituent surface.
- the stator 7 shown in FIG. 10A is equivalent to the stator 7A shown in FIG. 10B.
- the stator 7A includes three constituent surfaces 81, 82, 83 in which the dividing surface 800A instead of the dividing surface 800 is along the axial direction, as a difference from the stator 7.
- the direction of the normal of the first surface 81, which is the first constituent surface, is indicated by an arrow n1.
- the second surface 82, which is the second constituent surface is a surface continuous with the first surface 81, and the direction of the normal line is indicated by an arrow n2.
- the third surface 83 which is the third constituent surface, is a surface continuous with the second surface 82, and the direction of the normal line is indicated by an arrow n3.
- the other configurations of the stator 7A are the same as those of the stator 7, and the same configurations are designated by the same reference numerals as those of the stator 7, and the description thereof will be omitted.
- the notch 44a is provided on the fourth surface 44 has been described as an example, but the present invention is not limited to this.
- the notch may be provided on the third surface 43.
- the direction nP of the normal of the third surface (pin press-fitting surface) 43 faces the out-of-plane direction of the first surface 41, the first surface close to the magnetic gap portion G in the adjacent core dividing body 40. 41 can be brought into close contact with each other.
- the rotary electric machine of the present invention is not limited to the electric machine, and may be a generator.
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- Iron Core Of Rotating Electric Machines (AREA)
Abstract
Description
まず、図1を用いて、第1実施形態に係る固定子1及び電動機(符号省略)の構成について説明する。図1は、固定子1の一部分を示す断面図である。
次に、図3を用いて、第2実施形態に係る回転子2及び電動機(符号省略)の構成について説明する。図3は、回転子2の一部分を示す断面図である。
次に、図5を用いて、第3実施形態に係る固定子3及び電動機(符号省略)の構成について説明する。図5は、固定子3の一部分を示す断面図である。
次に、図7を用いて、第4実施形態に係る固定子4及び電動機(符号省略)の構成について説明する。図7は、固定子4の一部分を示す断面図である。
次に、図9A及び図9Bを用いて、隣接するコア分割体50,60の分割面500,600を構成する構成面の数について説明する。ここで説明する構成面の数の数え方は、上記の各実施形態に適用される。図9Aは、分割面500,600を構成する構成面の数を説明するための図であって、固定子5の一部分を示す分解断面図である。図9Bは、固定子5と等価である固定子5Aの一部分を示す分解断面図である。
次に、図10A及び図10Bを用いて、隣接するコア分割体70,80の分割面700,800を構成する構成面の数について説明する。ここで説明する構成面の数の数え方は、上記の各実施形態に適用される。図10Aは、分割面700,800を構成する構成面の数を説明する固定子7の一部分を示す分解断面図である。図10Bは、固定子7と等価である固定子7Aの一部分を示す分解断面図である。
本発明の回転電機は、電動機に制限されず、発電機でもよい。
2 回転子
10,20,30,40,50,60,70,80 コア分割体
11,21,31,41,51,61,71,81 第1面(構成面)
12,22,32,42,52,62,72,82 第2面(構成面)
13,23,33,43,53,63 第3面(構成面)
73,83 第3面(構成面、最遠面)
14,24 第4面(構成面、ピン圧入面)
34,54,64 第4面(構成面)
44 第4面(構成面、ピン圧入面、最遠面)
15,25,55,65 第5面(構成面、最遠面)
35 第5面(構成面)
36 第6面(構成面)
37 第7面(構成面、ピン圧入面)
38 第8面(構成面、最遠面)
56,57,66,67 面取り面
14a,24a,37a,44a 切欠部(ピン圧入孔)
100,200,300,400,500,500A,600,600A,700,800,800A 分割面
P ピン
G 磁気ギャップ部
W 溶接
n1 第1面の法線の方向
n2 第2面の法線の方向
n3 第3面の法線の方向
n4 第4面の法線の方向
n5 第5面の法線の方向
nP ピン圧入面の法線の方向
Claims (7)
- 軸方向に沿って延びる切欠部を有する複数のコア分割体と、隣接する前記コア分割体それぞれに設けられると共に対面する前記切欠部により形成されるピン圧入孔に圧入される複数のピンと、を備える固定子であって、
複数の前記コア分割体は、それぞれ、磁気ギャップ部から最も近い第1面、前記第1面の次に前記磁気ギャップ部から近い第2面、及び前記磁気ギャップ部から最も遠い最遠面の3つの面を含む、軸方向に沿って延びる4つ以上の構成面からなる分割面で、互いに分割されており、
前記第1面及び前記第2面以外の前記構成面の1つの面であって、前記切欠部が設けられるピン圧入面は、法線の方向が前記第1面の面外の方向又は前記第2面の面外の方向を向いている、
固定子。 - 前記ピン圧入面は、前記最遠面以外の前記構成面であり、法線の方向が前記第1面の法線の方向と前記第2面の法線の方向との間の方向を向いている、
請求項1に記載の固定子。 - 隣接する前記コア分割体において、対面する前記最遠面は溶接で固定されている、
請求項1又は2に記載の固定子。 - 請求項1~3のいずれかに記載の固定子と、
前記固定子の内側に配置される回転子と、を備える回転電機。 - 軸方向に沿って延びる切欠部を有する複数のコア分割体と、隣接する前記コア分割体それぞれに設けられると共に対面する前記切欠部により形成されるピン圧入孔に圧入される複数のピンと、を備える固定子であって、
複数の前記コア分割体は、それぞれ、磁気ギャップ部から最も近い第1面、前記第1面の次に前記磁気ギャップ部から近い第2面、及び前記磁気ギャップ部から最も遠い最遠面の3つの面を含む、軸方向に沿って延びる4つ以上の構成面からなる分割面で、互いに分割されており、
前記第1面及び前記第2面以外の前記構成面の1つの面であって、前記切欠部が設けられるピン圧入面は、法線の方向が前記第1面の面外の方向又は前記第2面の面外の方向を向いている、
回転子。 - 前記ピン圧入面は、前記最遠面以外の前記構成面であり、法線の方向が前記第1面の法線の方向と前記第2面の法線の方向との間の方向を向いている、
請求項5に記載の回転子。 - 請求項5又は6に記載の回転子と、
前記回転子の外側に配置される固定子と、を備える回転電機。
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| CN202180024220.6A CN115398776B (zh) | 2020-04-01 | 2021-03-30 | 定子、转子以及旋转电机 |
| US17/758,274 US20230048985A1 (en) | 2020-04-01 | 2021-03-30 | Stator, rotor, and rotating electrical machine |
| DE112021000423.9T DE112021000423T5 (de) | 2020-04-01 | 2021-03-30 | Stator, Rotor und rotierende elektrische Maschine |
| JP2022512537A JP7453346B2 (ja) | 2020-04-01 | 2021-03-30 | 固定子、回転子及び回転電機 |
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| JP7705237B2 (ja) * | 2020-11-20 | 2025-07-09 | ミネベアミツミ株式会社 | モータ |
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| EP4560884A1 (de) * | 2023-11-21 | 2025-05-28 | Hilti Aktiengesellschaft | Stator mit steckbaren zähnen |
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| JP7453346B2 (ja) | 2024-03-19 |
| DE112021000423T5 (de) | 2022-10-13 |
| US20230048985A1 (en) | 2023-02-16 |
| CN115398776A (zh) | 2022-11-25 |
| CN115398776B (zh) | 2025-07-11 |
| JPWO2021200944A1 (ja) | 2021-10-07 |
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