WO2017122445A1 - 回転電機の固定子、回転電機、および回転電機の固定子の製造方法 - Google Patents
回転電機の固定子、回転電機、および回転電機の固定子の製造方法 Download PDFInfo
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- WO2017122445A1 WO2017122445A1 PCT/JP2016/085408 JP2016085408W WO2017122445A1 WO 2017122445 A1 WO2017122445 A1 WO 2017122445A1 JP 2016085408 W JP2016085408 W JP 2016085408W WO 2017122445 A1 WO2017122445 A1 WO 2017122445A1
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- stator
- rotating electrical
- electrical machine
- circumferential direction
- width
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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
- H02K1/16—Stator cores with slots for windings
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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
- H02K1/16—Stator cores with slots for windings
- H02K1/165—Shape, form or location of the slots
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/12—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors arranged in slots
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/46—Fastening of windings on the stator or rotor structure
- H02K3/48—Fastening of windings on the stator or rotor structure in slots
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/46—Fastening of windings on the stator or rotor structure
- H02K3/48—Fastening of windings on the stator or rotor structure in slots
- H02K3/487—Slot-closing devices
- H02K3/493—Slot-closing devices magnetic
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2201/00—Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
- H02K2201/15—Sectional machines
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
- H02K5/173—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
- H02K5/1732—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings radially supporting the rotary shaft at both ends of the rotor
Definitions
- the present invention relates to a rotating electrical machine stator, a rotating electrical machine, and a method of manufacturing a rotating electrical machine stator capable of suppressing stress concentration and improving fatigue strength.
- the teeth include a teeth body portion and a teeth tip portion, and after the coil is mounted, the teeth tip portion is directed to the slot side that is the outer side in the circumferential direction,
- One that narrows the slot opening width by opening is proposed (for example, see Patent Document 1).
- the axis of the stator core By providing a bent portion at the tip of the teeth that can be bent in the circumferential direction and a V-shaped notch, and setting the R dimension at the tip of the notch to 30-60% of the core material plate thickness, the axis of the stator core There was an effect to suppress the rise in the direction.
- a first member having a teeth portion for winding a coil which is made of a silicon steel plate, has a lower silicon content than the silicon steel plate, and a central axis of the stator with respect to the first member Proposed split stator core comprising: a teeth portion laminated in a direction; and a second member having a tooth portion for winding a coil and a flange portion provided at the tip of the tooth portion and bent after coil insertion to position the coil (For example, refer to Patent Document 2).
- the first member portion having a high silicon content has an effect of holding the coil with the second member while achieving high efficiency.
- the thinnest part that is pressed and punched with a mold is generally formed to have a thickness larger than the plate thickness in terms of mold life and accuracy, and this bent portion is also at least larger than the plate thickness. It is desirable to provide a width.
- the bent portion having a width larger than the plate thickness is bent to the inner R dimension of 30 to 60% of the plate thickness.
- the present invention has been made in order to solve the above-described problems, and can manufacture a stator of a rotating electrical machine, a rotating electrical machine, and a stator of a rotating electrical machine that can suppress stress concentration and improve fatigue strength. It aims to provide a method.
- the stator of the rotating electrical machine of the present invention is An iron core having an annularly formed back yoke portion, and a plurality of teeth portions formed to protrude in the radial direction at intervals in the circumferential direction of the back yoke portion; In a stator of a rotating electric machine comprising a plurality of slots formed between adjacent teeth portions and coils installed via insulating portions, respectively.
- the distal end portion of the teeth portion on the protruding side in the radial direction has a flange portion protruding toward the slot side in the circumferential direction,
- the collar part is connected to the teeth part,
- a bent portion that extends in the circumferential direction from the connecting portion and forms a first gap portion that is separated from the tip portion of the teeth portion;
- a circumferentially extending front end side projecting from the bent portion to the slot side, the stop portion is formed with a radial width longer than the radial width of the bent portion,
- the R dimension of the side surface in the circumferential direction on the side opposite to the protruding side of the teeth portion of the bent portion is equal to or greater than the radial width of the bent portion.
- the rotating electrical machine of the present invention includes a rotor arranged concentrically with respect to the stator.
- stator of a rotating electrical machine According to the stator of a rotating electrical machine, the rotating electrical machine, and the method of manufacturing a stator of a rotating electrical machine of the present invention, stress concentration can be suppressed and fatigue strength can be improved.
- FIG. 3 is a plan view showing a state before the iron core of the stator shown in FIG. 2 is bent.
- FIG. 3 is a plan view showing a state before the iron core of the stator shown in FIG. 2 is bent.
- FIG. 3 is a plan view showing a state before the iron core of the stator shown in FIG. 2 is bent.
- FIG. 3 is a plan view showing a state before the iron core of the stator shown in FIG. 2 is bent.
- FIG. 3 is a perspective view which shows the structure of the stator and rotor of the rotary electric machine shown in FIG.
- FIG. is a perspective view which shows the structure of the split iron core of the stator of the rotary electric machine shown in FIG.
- FIG. 1 shows the structure of the rotary electric machine of Embodiment 1 of this invention.
- FIG. It is a side view which shows the manufacturing method of the stator of the rotary electric machine shown in FIG. It is a top view which shows the manufacturing method of the stator of the rotary electric machine shown in FIG. It is a perspective view which shows the manufacturing method of the stator of the rotary electric machine shown in FIG. It is a side view which shows the manufacturing method of the stator of the rotary electric machine shown in FIG. It is a top view which shows the manufacturing method of the stator of the rotary electric machine shown in FIG. It is a perspective view which shows the manufacturing method of the stator of the rotary electric machine shown in FIG. It is a top view which shows the manufacturing method of the part shown by S of the stator shown in FIG.
- FIG. 6 is a plan view showing a configuration of a stator of a comparative example for explaining the effect of the first embodiment.
- 5 is a plan view for explaining the principle of the effect of the first embodiment.
- FIG. FIG. 5 is a plan view for explaining the principle of a comparative example for explaining the effect of the first embodiment.
- It is the top view which showed the other example of the iron core of the stator of Embodiment 1 of this invention.
- FIG. 20 is a plan view showing a state before bending of the iron core of the stator shown in FIG. 19.
- FIG. 3 It is a top view which shows the structure of the iron core of the stator in Embodiment 3 of this invention. It is a top view which shows the state before the bending of the iron core of the stator shown in FIG. It is a top view which shows the structure of the iron core of the stator in Embodiment 4 of this invention. It is a top view which shows the state before the bending of the iron core of the stator shown in FIG. It is a top view which shows the state before the bending of the iron core of the stator shown in FIG.
- FIG. 1 is a half longitudinal sectional side view showing the configuration of a rotating electrical machine according to Embodiment 1 of the present invention.
- FIG. 2 is a plan view showing the configuration of the teeth portion of the iron core of the stator of the rotating electric machine shown in FIG.
- FIG. 3 is a plan view showing a state before bending of the flange portion of the teeth portion of the iron core of the stator shown in FIG.
- FIG. 4 is a perspective view showing the configuration of the stator and the rotor of the rotating electrical machine shown in FIG.
- FIG. 5 is a perspective view showing a configuration of a split core of the stator of the rotating electrical machine shown in FIG.
- FIG. 6 is a perspective view showing a configuration of a coil and an insulating portion of the stator of the rotating electric machine shown in FIG.
- FIG. 7 is a side view showing a method for manufacturing the stator of the rotating electric machine shown in FIG.
- FIG. 8 is a plan view showing a method for manufacturing the stator of the rotating electric machine along the line QQ shown in FIG.
- FIG. 9 is a perspective view showing a method of manufacturing the stator of the rotating electric machine at the same time as in FIGS. 7 and 8.
- FIG. 10 is a side view showing a method for manufacturing the stator of the rotating electrical machine in the next step of FIG.
- FIG. 11 is a plan view showing a method of manufacturing the stator of the rotating electric machine along the PP line shown in FIG.
- FIG. 12 is a perspective view showing a method for manufacturing a stator of a rotating electric machine at the same time as in FIGS. 10 and 11.
- FIG. 13 is a plan view showing a method of manufacturing the portion indicated by S of the stator shown in FIG. 14 is a plan view showing a method of manufacturing the portion indicated by S of the stator shown in FIG. 11 in the next step of FIG.
- FIG. 15 is a plan view showing a configuration of a stator of a comparative example for explaining the effect of the first embodiment.
- FIG. 16 is a plan view for explaining the principle of the effect of the first embodiment.
- FIG. 17 is a plan view for explaining the principle of a comparative example for explaining the effect of the first embodiment.
- FIG. 18 is a plan view showing another example of the iron core of the stator according to Embodiment 1 of the present invention.
- a rotating electrical machine 100 includes a stator 1 and a rotor 101 disposed in an annular shape of the stator 1.
- the rotating electrical machine 100 is housed in a housing 109 having a bottomed cylindrical frame 102 and an end plate 103 that closes the opening of the frame 102.
- the stator 1 is fixed inside the cylindrical portion of the frame 102 in a fitted state.
- the rotor 101 is fixed to a rotating shaft 106 that is rotatably supported by a bottom portion of the frame 102 and an end plate 103 via a bearing 104.
- the rotor 101 includes a rotor core 107 fixed to a rotary shaft 106 inserted through the shaft center position, and is embedded in the outer peripheral surface of the rotor core 107 and arranged at predetermined intervals in the circumferential direction Z. It is formed with the permanent magnet 108 which comprises.
- the rotor 101 is shown as a permanent magnet type, the present invention is not limited to this, and a conductor wire not coated with an insulating film is housed in a slot and both sides are short-circuited with a short-circuit ring. It is also possible to use a rotor having a shape or a winding rotor in which a conductor wire with an insulating coating is mounted in a slot of the rotor core.
- the stator 1 is composed of an iron core 4 and a coil 7.
- the iron core 4 includes an annularly formed back yoke portion 2 and a plurality of teeth portions 3 formed to protrude inward in the radial direction X at equal intervals in the circumferential direction Z of the inner periphery of the back yoke portion 2. And have.
- the coil 7 is installed in each of a plurality of slots 5 formed between adjacent tooth portions 3 via insulating portions 6.
- the slot 5 is configured to penetrate in the axial direction Y.
- the back yoke part 2 has connected each teeth part 3 magnetically.
- the iron core 4 is formed by connecting a plurality of divided iron cores 41 as shown in FIG. Two teeth 3 are formed in one divided iron core 41.
- the coil 7 is applicable to a structure such as distributed winding wound around a plurality of tooth portions 3 or concentrated winding wound around one tooth portion 3. However, in the first embodiment, a distributed winding will be described as an example.
- the iron core 4 is formed by, for example, punching a plate material of an electromagnetic steel plate containing silicon with a press or the like and laminating a plurality of the plate materials 40 in the axial direction Y.
- the plate member 40 is formed such that the lamination in the axial direction Y is fixed by fixing means such as caulking, welding, and adhesion.
- fixing means such as caulking, welding, and adhesion.
- the insulation part 6 and the iron core 4 are integrated and comprised by fixing means, such as injection molding, may be sufficient.
- the protrusion part 10A of the radial direction X of the teeth part 3 here, the front-end
- the heel part 10 includes a connecting part 11, a bent part 12, and a stop part 13.
- the connecting portion 11 is formed by being connected at the central portion in the circumferential direction Z of the tip portion 3A of the tooth portion 3.
- the bent portions 12 are formed to extend from the connecting portion 11 to both sides in the circumferential direction Z, respectively.
- the bent portion 12 forms a first gap portion 8 that is separated from the tip portion 3 ⁇ / b> A of the tooth portion 3.
- the first gap 8 has a width W3 in the radial direction X that is shorter than a width W4 in the circumferential direction Z.
- the R dimension R0 of the circumferential side surface 12A on the side (inner side X1) opposite to the protruding side (outer side X2) of the teeth part 3 of the bent part 12 is bent in the circumferential direction Z as shown in FIG.
- the radius is a smooth curve after being formed, and is formed with a width W1 or more in the radial direction X of the bent portion 12. Further, the width W1 in the radial direction X of the bent portion 12 is formed to be constant.
- a recess 14 is formed in the circumferential side surface 12B of the inner side X1 of the bent portion 12.
- the stop portion 13 is formed to extend from the bent portion 12 to both sides in the circumferential direction Z.
- the stop portion 13 is formed such that the distal end side 13A in the circumferential direction Z protrudes toward the slot 5 side.
- the stop portion 13 is formed such that the width W2 in the radial direction X is longer than the width W1 in the radial direction X of the bent portion 12.
- the second gap portion 9 is formed by the stop portion 13 and the tip portion 3A of the tooth portion 3.
- the width W5 in the radial direction X of the second gap 9 is formed shorter than the width W3 in the radial direction X of the first gap 8.
- the insulating part 6 is installed at a predetermined location of the coil 7 wound in a desired shape.
- the split iron core 41 is formed in a state in which the flange portion 10 does not protrude toward the slot 5 in the circumferential direction Z (first step).
- the split iron core 41 is disposed on the outer peripheral side of the coil 7 on which the insulating portion 6 is installed.
- the split iron core 41 is moved to the inner side X1 in the radial direction X, and the coil 7 is attached to the split iron core 41 (second step).
- the plurality of divided iron cores 41 are connected to form the iron core 4 and the annular back yoke portion 2 is constituted.
- the slot 5 is comprised by the teeth part 3 of the some division
- the coil 7 and the insulating portion 6 formed in the previous step are disposed in the slot 5.
- the illustration of the insulating portion 6 is omitted.
- a jig 17 is installed so as to face the formation position of the flange portion 10 on the inner side X ⁇ b> 1 in the radial direction X of the iron core 4.
- the position of the iron core 4 is fixed, and the jig 17 is moved to the outer side X ⁇ b> 2 in the radial direction X and pressed against the flange portion 10.
- the flange portion 10 is bent with the bent portion 12 deformed, and the stop portion 13 moves to the tip portion 3 ⁇ / b> A side of the tooth portion 3.
- the bending angle ⁇ of the flange portion 10 from FIG. 13 to FIG. 14 is as shown in FIG.
- the distal end side 13A of the stop portion 13 protrudes toward the slot 5 in the circumferential direction Z (third process).
- the width W11 in the circumferential direction Z of the inner side X1 (the opening side of the slot 5) in the radial direction X of the slot 5 is A width W10 in the circumferential direction Z of the outer side X2 in the radial direction X is formed smaller. Therefore, the width in the circumferential direction Z of the inner side X1 (the opening side of the slot 5) of the slot 5 in the radial direction X is equal to the width in the circumferential direction Z of the outer side X2 of the slot 5 in the radial direction X.
- the rotor loss can be reduced and the efficiency can be improved. Furthermore, since the magnet temperature is lowered by reducing the rotor loss, it is possible to use a low-grade magnet, and the cost is reduced.
- the R dimension R0 of the circumferential side surface 12A of the bent portion 12 is formed with a width W1 or more in the radial direction X of the bent portion 12.
- separate is formed. Since the first gap 8 is formed so that the width W3 in the radial direction X is shorter than the width W4 in the circumferential direction Z, the R dimension R0 in which the circumferential side surface 12A of the bent portion 12 is a smooth curved surface can be easily obtained. It can be secured.
- the circumferential side surface 12A of the bent portion 12 is formed in a smooth R shape having an R dimension R0 and is connected to the connecting portion 11 and the stop portion 13, stress concentration during bending does not occur. Since stress is evenly generated, there is an effect that cracks are hardly generated.
- the flange portion 10 When the flange portion 10 is formed by the jig 17, the flange portion 10 can be stably formed by bringing the stop portion 13 into contact with the tip portion 3A of the teeth portion 3, and torque ripple and cogging torque can be formed. There is an effect of reducing.
- the stop portion 13 At the time of molding, the stop portion 13 is brought into contact with the tip portion 3A of the teeth portion 3 by the jig 17, but when the jig 17 is removed thereafter, the stop portion 13 and the tip portion 3A of the teeth portion 3 are not connected to each other. Two voids 9 are formed.
- the width W1 in the radial direction X of the bent portion 12 is formed shorter than the width W2 in the radial direction X of the stop portion 13, a portion that undergoes plastic deformation concentrates on the bent portion 12. For this reason, it becomes possible to bend with a small force, and there is an effect of manufacturing at low cost.
- FIG. 16 shows an example of a bent portion of the present embodiment.
- FIG. 17 shows an example of a comparative example.
- the relationship between the bent portion and R is not clearly shown.
- the mold In the case of punching with a press, it is desirable that the minimum width portion is at least as thick as the plate thickness because of accuracy. Therefore, here, an example of this embodiment is shown in FIG. 16 and a comparative example is shown in FIG. Specifically, the calculation is performed assuming that the width W1 in the radial direction X of the bending portion 12 is 1 mm, the bending angle is 60 °, and the neutral axis of the bending portion 12 is 40% of the width in the radial direction X. . It is empirically known that the position of the neutral axis of the bent portion is about 40% of the radial width.
- the strain can be reduced in this way, a silicon steel plate having a small allowable amount with respect to the strain and a large silicon content (for example, 1% or more) can be used as the plate member 40, and the efficiency can be improved. it can.
- the three parameters of the R dimension R0 of the circumferential side surface 12A of the bent portion 12, the width W1 of the bent portion 12 in the radial direction X, and the bending angle ⁇ are within the range in which the plate material 40 satisfies R0 ⁇ W1. It can be set arbitrarily according to the amount.
- the distortion generated in the bent portion 12 is reduced to the plate material 40.
- the amount By setting the amount to be equal to or less than the allowable elongation amount, the risk of breakage when bending the flange portion 10 is reduced, and a highly reliable rotating electrical machine can be obtained.
- each of the divided iron cores 41 has an allowable elongation amount in the circumferential direction Z larger than an allowable elongation amount in the radial direction X. It is conceivable to use a large member. This is because when the flange portion 10 protruding in the radial direction X is bent in the circumferential direction Z, the flange portion 10 mainly extends in the circumferential direction Z.
- the “allowable elongation” here refers to the amount of elongation before the member breaks.
- the width W1 in the radial direction X of the bent portion 12 is preferably equal to or greater than the thickness of the plate member 40 constituting the iron core 4.
- the width W1 in the radial direction X of the bent portion 12 is constant and the concave portion 14 is provided on the circumferential side surface 12B of the bent portion 12, the effect of averaging the strain generated in the bent portion 12 and reducing the maximum strain is obtained. is there.
- this embodiment has an effect of further reducing the bulge in the axial direction Y.
- the second gap portion 9 is formed by the stop portion 13 and the tip portion 3 ⁇ / b> A of the tooth portion 3.
- the width W5 in the radial direction X of the second gap portion 9 is shorter than the width W3 in the radial direction X of the first gap portion 8.
- the magnetic flux decreases in the radial direction X passing through the bent portion 12 having a large magnetic resistance in the radial direction X. And the magnetic flux which passes along the connection part 11 and the stop part 13 of the teeth part 3 increases. As described above, since the magnetic flux passing through the bent portion 12 deteriorated by processing is reduced, there is an effect of increasing the efficiency.
- a cushioning material 16 may be installed in the second gap portion 9.
- the buffer material 16 is preferably made of a thermosetting resin such as epoxy or acrylic. By using these resins, the second gap 9 can be filled in a liquid state, so that the cushioning material 16 can be easily installed.
- the cushioning material 16 does not need to be installed in all of the second gap 9, and the cushioning material 16 may be installed in at least a part of the second gap 9.
- the R dimension of the bent portion is set to be equal to or larger than the radial width of the bent portion. Therefore, there is an effect of suppressing stress concentration and improving fatigue strength. Moreover, since the collar part which protrudes in the slot direction in the circumferential direction is provided over the full length of an axial direction, there exists an effect which suppresses a rotor iron loss and improves efficiency. As a result, the magnet temperature is unlikely to rise, so a low-grade magnet can be used, and the cost can be reduced. Further, the collar portion has an effect of securely holding the coil in the slot. In addition, since the circumferential width of the first gap is long and the radial width is short, the stress is relaxed and the strain is suppressed, and further, the magnetic resistance is suppressed and the output is increased.
- the second gap is formed between the stop portion and the tooth portion, when the stop portion vibrates due to electromagnetic force, the stop portion and the tip end portion of the tooth portion come into contact with each other to generate noise. This has the effect of reducing noise.
- the radial width of the second gap portion is shorter than the radial width of the first gap portion, the radial magnetic flux passing through the bent portion having a large radial magnetic resistance is reduced, and the teeth The magnetic flux passing through the central portion and the collar portion in the circumferential direction of the portion increases. As described above, since the magnetic flux passing through the bent portion deteriorated by the processing is reduced, there is an effect of increasing the efficiency.
- the radial width of the bent portion is formed to be equal to or greater than the plate thickness of the plate material, the accuracy of forming the bent portion is stabilized, and there is an effect of suppressing torque ripple and cogging torque.
- the plate material constituting the iron core is formed of an electromagnetic steel plate containing silicon, there is an effect that the efficiency is improved. Furthermore, the risk of breakage when bending the collar portion is reduced, and a highly reliable rotating electrical machine can be obtained.
- the iron core is composed of a plurality of divided iron cores divided in the circumferential direction, and each divided iron core is formed of a member whose allowable elongation amount in the circumferential direction is larger than the allowable elongation amount in the radial direction. The risk of breakage when bending the collar portion is reduced, and a highly reliable rotating electrical machine can be obtained.
- the collar does not protrude toward the slot before the coil is inserted into the slot (first step), the coil can be assembled into the slot without being interfered by the collar.
- a split core divided in the circumferential direction Z is used.
- the present invention is not limited to this, and it is also possible to form an integral core.
- the present invention is not limited to the inner rotation type and can be applied to an outer rotation type rotating electrical machine. Since these are the same in the following embodiments, the description thereof will be omitted as appropriate.
- FIG. FIG. 19 is a plan view showing the configuration of the tip of the teeth portion of the stator of the rotating electric machine according to Embodiment 2 of the present invention.
- FIG. 20 is a plan view showing a state before bending the collar portion of the tooth portion shown in FIG.
- the same parts as those in the first embodiment are denoted by the same reference numerals and the description thereof is omitted.
- the concave portion 14 is not formed in the bent portion 12.
- the width W6 in the radial direction X on the connecting portion 11 side of the bent portion 12 and the width W7 in the radial direction X on the stop portion 13 side are the same. Therefore, after bending the collar part 10, the circumferential side surface 10A of the inner side X1 of the radial direction X in the circumferential direction Z of the collar part 10 is formed in a substantially linear shape.
- stator of the rotating electrical machine of the second embodiment configured as described above, the same effect as that of the first embodiment can be obtained, as well as the bent portion as shown in the first embodiment. Since no concave portion is formed, the magnetic resistance can be reduced and the effect of increasing the output can be obtained.
- FIG. 21 is a plan view showing the configuration of the tip of the teeth portion of the stator of the rotating electric machine according to Embodiment 3 of the present invention.
- FIG. 22 is a plan view showing a state before bending the collar portion of the tooth portion shown in FIG.
- the bending portion 12 is formed such that the width W6 in the radial direction X on the connection portion 11 side is longer than the width W7 in the radial direction X on the stop portion 13 side.
- the bending portion is bent by pressing in the radial direction with a jig as well as the same effects as those of the respective embodiments.
- a large moment is applied to the connecting part side.
- the strain at the bent portion is constant, and there is an effect of further reducing the maximum strain.
- FIG. 23 is a plan view showing the configuration of the iron core of the stator according to Embodiment 4 of the present invention.
- 24 is a plan view showing a state before bending of the iron core of the stator shown in FIG.
- FIG. 25 is a plan view showing a state before the iron core of the stator shown in FIG. 24 is bent.
- the same parts as those in the above embodiments are denoted by the same reference numerals, and description thereof is omitted.
- the stator of the rotating electric machine according to the fourth embodiment configured as described above has the same effect as each of the embodiments described above, and the stop portion is formed only on one side in the circumferential direction of the teeth portion. Therefore, the distance from the bent portion to the tip of the collar portion can be increased as compared with the case where they are provided on both sides, so that the bending angle can be reduced. Therefore, there is an effect of suppressing distortion.
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Abstract
Description
環状に形成されたバックヨーク部、および、前記バックヨーク部の周方向に間隔を隔てて径方向に突出して形成された複数のティース部を有する鉄心と、
隣接する前記ティース部間に形成された複数のスロットにそれぞれ絶縁部を介して設置されるコイルとを備えた回転電機の固定子において、
前記ティース部の径方向の突出側の先端部には、周方向において前記スロット側に突出する鍔部を有し、
前記鍔部は、前記ティース部と連結する連結部と、
前記連結部から周方向に延在するとともに、前記ティース部の先端部と離反する第一空隙部を形成する屈曲部と、
前記屈曲部から周方向に延在するとともに、周方向の先端側が前記スロット側に突出し、前記屈曲部の径方向の幅より長い径方向の幅にて形成される停止部とを備え、
前記屈曲部の前記ティース部の突出側と相反する側の周方向側面のR寸法は、前記屈曲部の径方向の幅以上である。
前記鉄心を、前記鍔部が周方向において前記スロット側に突出していない状態にて形成する第一工程と、
前記鉄心の前記スロットに前記絶縁部を介して前記コイルを設置する第二工程と、
前記鍔部を周方向に屈曲させて前記スロット側に突出させる第三工程とを備えたものである。
以下、本願発明の実施の形態について説明する。図1はこの発明の実施の形態1の回転電機の構成を示した片縦断面側面図である。図2は図1に示した回転電機の固定子の鉄心のティース部の構成を示した平面図である。図3は図2に示した固定子の鉄心のティース部の鍔部の屈曲前の状態を示す平面図である。図4は図1に示した回転電機の固定子および回転子の構成を示す斜視図である。図5は図4に示した回転電機の固定子の分割鉄心の構成を示す斜視図である。
当該第二空隙部9を形成することで、鍔部10が電磁力により振動した際に、鍔部10とティース部3との接触により生じる騒音が低減し、低騒音化の効果がある。
また、周方向においてスロット側に突出する鍔部を軸方向の全長に渡って設けるので、回転子鉄損を抑制し、効率を向上する効果がある。
そのことにより、磁石温度が上昇しにくくなるため、低グレードの磁石を用いることができ、安価となる効果がある。
さらに、鍔部により、コイルをスロット内に確実に保持する効果がある。
また、第一空隙部の周方向の幅を長く、径方向の幅を短く形成するため、応力を緩和するとともに歪みを抑制し、さらに、磁気抵抗を抑制し、高出力化の効果がある。
図19はこの発明の実施の形態2における回転電機の固定子のティース部の先端部の構成を示す平面図である。図20は図19に示したティース部の鍔部を屈曲させる前の状態を示す平面図である。
図21はこの発明の実施の形態3における回転電機の固定子のティース部の先端部の構成を示す平面図である。図22は図21に示したティース部の鍔部を屈曲させる前の状態を示す平面図である。図において、上記各実施の形態と同様の部分は同一符号を付して説明を省略する。屈曲部12は、連結部11側の径方向Xの幅W6が、停止部13側の径方向Xの幅W7より長く形成されている。
上記各実施の形態においては、停止部13を、ティース部3の両周方向Zにそれぞれ形成する例を示したが、これに限られることはなく、本実施の形態4においては、停止部13を、ティース部3の周方向Zに一方のみに形成する場合ついて説明する。図23はこの発明の実施の形態4における固定子の鉄心の構成を示す平面図である。図24は図23に示した固定子の鉄心の屈曲前の状態を示す平面図である。図25は図24に示した固定子の鉄心の屈曲前の状態を示す平面図である。図において、上記各実施の形態と同様の部分は同一符号を付して説明を省略する。
Claims (14)
- 環状のバックヨーク部、および、前記バックヨーク部の周方向に間隔を隔てて径方向に突出する複数のティース部を有する鉄心と、
隣接する前記ティース部間の複数のスロットにそれぞれ絶縁部を介して設置されるコイルとを備えた回転電機の固定子において、
前記ティース部の径方向の突出側の先端部には、周方向において前記スロット側に突出する鍔部を有し、
前記鍔部は、前記ティース部と連結する連結部と、
前記連結部から周方向に延在するとともに、前記ティース部の先端部と離反する第一空隙部を形成する屈曲部と、
前記屈曲部から周方向に延在するとともに、周方向の先端側が前記スロット側に突出し、前記屈曲部の径方向の幅より長い径方向の幅の停止部とを備え、
前記屈曲部の前記ティース部の突出側と相反する側の周方向側面のR寸法は、前記屈曲部の径方向の幅以上である回転電機の固定子。 - 前記第一空隙部は、径方向の幅が、周方向の幅より短い請求項1に記載の回転電機の固定子。
- 前記停止部と前記ティース部の先端部とにて第二空隙部が構成される請求項1または請求項2に記載の回転電機の固定子。
- 前記第二空隙部の径方向の幅は、前記第一空隙部の径方向の幅より短い請求項3に記載の回転電機の固定子。
- 前記第二空隙部には、緩衝材が設置されている請求項3または請求項4に記載の回転電機の固定子。
- 前記鍔部は、前記ティース部の周方向の一方のみに構成される請求項1から請求項5のいずれか1項に記載の回転電機の固定子。
- 前記屈曲部は、前記連結部側の径方向の幅と、前記停止部側の径方向の幅とが同一である請求項1から請求項6のいずれか1項に記載の回転電機の固定子。
- 前記屈曲部は、前記ティース部の突出側の周方向側面に凹部を備える請求項7に記載の回転電機の固定子。
- 前記屈曲部は、前記連結部側の径方向の幅が、前記停止部側の径方向の幅より長い請求項1から請求項6のいずれか1項に記載の回転電機の固定子。
- 前記鉄心は、複数の板材を軸方向に積層して構成された回転電機の固定子において、
前記屈曲部の径方向の幅は、前記板材の板厚以上である請求項1から請求項9のいずれか1項に記載の回転電機の固定子。 - 前記鉄心は、複数の板材を軸方向に積層して構成された回転電機の固定子において、
前記板材は、珪素が含有された電磁鋼板にて形成されている請求項1から請求項10のいずれか1項に記載の回転電機の固定子。 - 前記鉄心が、周方向に分割された複数の分割鉄心にて構成された回転電機の固定子において、
各前記分割鉄心は、周方向の許容伸び量が、径方向の許容伸び量よりも大きい部材にて形成されている請求項1から請求項11のいずれか1項に記載の回転電機の固定子。 - 請求項1から請求項12のいずれか1項に記載の回転電機の固定子と、
前記固定子に対して同心円状に配置される回転子とを備えた回転電機。 - 請求項1から請求項12のいずれか1項に記載の回転電機の固定子の製造方法において、
前記鉄心を、前記鍔部が周方向において前記スロット側に突出していない状態にて形成する第一工程と、
前記鉄心の前記スロットに前記絶縁部を介して前記コイルを設置する第二工程と、
前記鍔部を周方向に屈曲させて前記スロット側に突出させる第三工程とを備えた回転電機の固定子の製造方法。
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US16/068,205 US20190020228A1 (en) | 2016-01-12 | 2016-11-29 | Stator for rotary electric machine, rotary electric machine, and method for manufacturing stator for rotary electric machine |
CN201680074656.5A CN108475946B (zh) | 2016-01-12 | 2016-11-29 | 旋转电机的定子、旋转电机及旋转电机的定子的制造方法 |
DE112016006212.5T DE112016006212T5 (de) | 2016-01-12 | 2016-11-29 | Stator für eine elektrische Rotationsmaschine, elektrische Rotationsmaschine, und Verfahren zum Herstellen eines Stators für eine elektrische Rotationsmaschine |
JP2017561536A JP6416417B2 (ja) | 2016-01-12 | 2016-11-29 | 回転電機の固定子、回転電機、および回転電機の固定子の製造方法 |
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FR3142052A1 (fr) * | 2022-11-15 | 2024-05-17 | Moteurs Leroy-Somer | Stator de machine électrique tournante comportant des isthmes pliables |
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JPS62185435U (ja) * | 1986-05-19 | 1987-11-25 | ||
JP2000166134A (ja) * | 1998-11-30 | 2000-06-16 | Sanyo Electric Co Ltd | 集中巻方式のブラシレスdcモータ |
US20040187293A1 (en) * | 2003-03-25 | 2004-09-30 | Bradfield Michael Duane | Radial insertion of stator hairpin windings |
JP2015015842A (ja) * | 2013-07-05 | 2015-01-22 | 株式会社デンソー | 電機子 |
JP2015192592A (ja) * | 2014-03-31 | 2015-11-02 | 日立オートモティブシステムズエンジニアリング株式会社 | ブラシレスモータおよびこれを用いた電動パワーステアリング装置 |
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JPS5114354B1 (ja) | 1970-12-17 | 1976-05-08 | ||
JPS5287231A (en) | 1975-12-27 | 1977-07-20 | Otsuka Chem Co Ltd | Plant growth regulaor composition |
CN104838565B (zh) * | 2013-02-08 | 2018-01-09 | 富士电机株式会社 | 永磁体嵌入式旋转电机 |
WO2014181482A1 (ja) * | 2013-05-10 | 2014-11-13 | 三菱電機株式会社 | 鉄心部材、回転電機のインナーロータ型固定子、回転電機のインナーロータ型固定子の製造方法 |
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2016
- 2016-11-29 DE DE112016006212.5T patent/DE112016006212T5/de not_active Withdrawn
- 2016-11-29 US US16/068,205 patent/US20190020228A1/en not_active Abandoned
- 2016-11-29 CN CN201680074656.5A patent/CN108475946B/zh not_active Expired - Fee Related
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JPS62185435U (ja) * | 1986-05-19 | 1987-11-25 | ||
JP2000166134A (ja) * | 1998-11-30 | 2000-06-16 | Sanyo Electric Co Ltd | 集中巻方式のブラシレスdcモータ |
US20040187293A1 (en) * | 2003-03-25 | 2004-09-30 | Bradfield Michael Duane | Radial insertion of stator hairpin windings |
JP2015015842A (ja) * | 2013-07-05 | 2015-01-22 | 株式会社デンソー | 電機子 |
JP2015192592A (ja) * | 2014-03-31 | 2015-11-02 | 日立オートモティブシステムズエンジニアリング株式会社 | ブラシレスモータおよびこれを用いた電動パワーステアリング装置 |
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CN108475946A (zh) | 2018-08-31 |
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