WO1997033357A1 - Rotor de machine rotative - Google Patents

Rotor de machine rotative Download PDF

Info

Publication number
WO1997033357A1
WO1997033357A1 PCT/JP1996/000515 JP9600515W WO9733357A1 WO 1997033357 A1 WO1997033357 A1 WO 1997033357A1 JP 9600515 W JP9600515 W JP 9600515W WO 9733357 A1 WO9733357 A1 WO 9733357A1
Authority
WO
WIPO (PCT)
Prior art keywords
rotor
core
electric machine
brush
air
Prior art date
Application number
PCT/JP1996/000515
Other languages
English (en)
Japanese (ja)
Inventor
Kenji Ogishima
Tsutomu Shiga
Original Assignee
Nippondenso Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to JP7018263A priority Critical patent/JPH08214481A/ja
Priority claimed from JP7018263A external-priority patent/JPH08214481A/ja
Application filed by Nippondenso Co., Ltd. filed Critical Nippondenso Co., Ltd.
Priority to PCT/JP1996/000515 priority patent/WO1997033357A1/fr
Publication of WO1997033357A1 publication Critical patent/WO1997033357A1/fr

Links

Classifications

    • 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
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/32—Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium

Definitions

  • the present invention relates to a rotor of a rotating electric machine applied to, for example, a starting motor for starting an engine.
  • the conventional starting motors such as the Japan Electric Equipment Co., Ltd. No. 8 3 1 1 3 4 provide blades on the end face of the rotor core to circulate the air inside the motor, The inside of the starting motor is cooled by exchanging air.
  • an air passage is provided in the rotor core in the axial direction so that the negative pressure of the intake air of the engine and the positive pressure of the turbocharger are reduced. It is proposed that the rotor iron core be cooled by introducing airflow generated by the pressure difference between positive pressure or negative pressure air generated by an engine such as pressure and atmospheric pressure into this air passage. are doing.
  • the method of generating cooling air by providing blades on the end face of the rotor core has the disadvantages of increasing the number of parts and increasing the axial dimension of the rotor. I do.
  • the present invention has been made in view of the above-described problems, and a rotating device capable of improving the cooling performance while preventing an increase in the number of parts, miniaturizing the rotor and simplifying the structure.
  • the primary purpose is to provide an electric motor rotor.
  • the second object of the present invention is to provide a rotor of a rotary electric machine capable of favorably removing brush abrasion powder while reducing the size and simplifying the structure of the rotor. It is the purpose. Disclosure of the invention
  • air passages are formed in the rotor core by punching holes that are opened in each of the laminated core plates to form the rotor core and communicate with each other.
  • the air passages are formed by twisting the air passages to one side in the circumferential direction by stacking the core plates in a state of being rotated relative to each other by a predetermined angle.
  • the airflow is formed in the air passage by the rotation of the rotor core, and as a result, the air sucked into the air passage from the suction port of the air passage is accelerated. Then, it is blown out partly in the axial direction and mostly in the dividing direction from the outlet of the air passage. As a result, the rotor core is cooled well, and the parts near the blowout port are also cooled well by the airflow blown out from the blowout port. . In addition, it is possible to prevent an increase in the physique of the rotor due to the addition of a blade or the like.
  • one end face of the rotor core, in which the outlet of the air passage opens faces the brush, so that the air flow blown out from the outlet impinges on the brush. This can cool the brush etc. and blow off the brush abrasion powder satisfactorily.
  • the outer diameter of the slip ring or commutator fitted to the rotating shaft Normally, the outer diameter of the core is much smaller than the outer diameter of the core. It is difficult to blow the blown air stream directly onto the brush.
  • the air passage can be provided radially inside the rotor core, and the air flow can be blown out in the axial direction and the circumferential direction. Cooling of brushes and commutators and blowing out of brush abrasion powder are improved. If the brush wear powder accumulates on the commutator surface, the commutation will be reduced.
  • the rotating electric machine is a commutator-type starting motor.
  • the large heat generated by the coil (armature coil) wound on the rotor core is largely dependent on the heat radiation to the rotor core.
  • the axial center of the rotor core which was not easy to cool in the past, can be cooled well, and the improved cooling of this armature coil improves the burning resistance of the starting motor. Can be further improved.
  • an air exhaust hole is penetrated on the brush side of the housing, and an air inflow hole is penetrated on the opposite brush side, so the housing on the opposite brush side from the air inflow hole.
  • the air that has flowed into the internal space is accelerated by the air passages of the rotor core and blows out to the housing internal space on the brush side, and wears the brush while cooling the brushes etc. It is discharged from the air discharge hole with powder. Therefore, the accumulation of brush abrasion powder in the housing can be reduced.
  • each core plate is divided into a plurality of groups, and any two adjacent groups adjacent to each other are shifted by a predetermined slot pitch in the circumferential direction. It is a feature. In this way, regardless of the circumferential displacement of the core plate, there is no problem in inserting the coil into the slot.
  • the occupied angle in the circumferential direction of the base and the punched hole is naturally larger (for example, three times or more) than the occupied angle in the circumferential direction of the predetermined slot pitch.
  • a predetermined number of core plates adjacent to each other are less than one slot pitch in the circumferential direction with respect to other adjacent core plates. For example, 0.
  • the slot of the rotor core is formed by being twisted to one side in the circumferential direction.
  • the slot is formed by being twisted in the circumferential direction, so that the step in the air passage is reduced, and the air resistance can be reduced.
  • FIG. 1 is a perspective view showing an embodiment of the rotor of the rotating electric machine according to the present invention.
  • FIG. 2 is a front view showing the core plate 5 21 of FIG.
  • FIG. 3 is an axial cross-sectional view of a starter that uses the rotating electric machine of FIG. 1 as a starting motor.
  • FIG. 4 is a front view showing a modified example of the core plate 521 of FIG.
  • FIG. 5 is an axial sectional view showing another embodiment of the star shown in FIG.
  • FIG. 6 is an enlarged perspective view of the rotor of the rotating electric machine of FIG.
  • This rotor (armature) 540 constitutes an armature of a DC motor as a starting motor.
  • the armature (rotor) 5.10 is, as shown in FIG. 1 or FIG. 3, the armature shaft (rotation axis) ⁇ , 10 and the armature shaft. It has an armature core (rotary iron core) 52 0 fitted to 5 10 and a commutator set (rectifier) 51 1.
  • Fermat core 5 20 is core plate 5
  • the core plate 52 1 is formed by laminating a large number of layers 21, and the armature shaft 5 10 is press-fitted and fixed in the hole 5 22 of the core plate 5 21.
  • the core plate 52 1 is formed by stamping a thin steel plate by pressing, and the inner side of the core plate 52 1 (around the hole 52 2) has The punched holes 5 2 3 for positioning the core plate 5 2 1 and reducing the weight are equally spaced in the circumferential direction. Multiple (for example, 5) are formed at intervals.
  • a plurality of (for example, 25) slots 52 for accommodating the armature coil 5330 are formed on the outer periphery of the core plate 51, and the core A surface 524a is formed at the outer peripheral end of the rate 521, adjacent to each slot 524. At the outer peripheral end of the case 524a, the armature coil 530 is stored in the slot 524, and then the armature coil 530 is detached. Slot 5 to prevent
  • a fixed claw 5 25 which is pushed down on the opening side of 24 is formed.
  • the armature core 520 will be described in more detail.
  • core plates 5 2 1 When laminating core plates 5 2 1, core plates 5 2 1 are stacked one by one or in multiples one slot pitch sequentially to one side in the circumferential direction. The layers are stacked one after the other. By doing so, the air passages 52 3 a formed in the armature cores 52 by the communication of the punched holes 52 3 have the shape of the slots 52 4. It can be twisted to one side in the circumferential direction without making any changes.
  • the opening of the air passage 52 3 a at the front end 54 0 a of the mattress is the air inlet 52 3 b, and the air passage 5 5 Two
  • the opening of 3a is an air blower b 5 2 3c.
  • the direction in which the core plate 52 1 is displaced is such that the air outlet 52 3 c twists in the opposite direction to the rotation direction 7 with respect to the air inlet 5 23 b. Is done.
  • an air flow is formed from the air inlet 52 b to the air outlet 52 c.
  • reference numeral 910 denotes a brush
  • brush 910 includes a rear bracket 70, which is provided by a retainer (not shown) and a bolt (not shown). Fixed to 0.
  • Reference numeral 564 denotes a bearing for supporting the rear end of the armature shaft 510, and the bearing 564 is fitted into the recess of the rear bracket 700.
  • Reference numeral 501 denotes a yoke
  • reference numeral 550 denotes a field magnetic pole arranged on the inner peripheral surface of the yoke 501.
  • One end of the yoke 501 is fitted to the rear bracket 700, and the other end is fixed to the center bracket 81 including the speed reduction mechanism 300. It is.
  • part of the electric motor 500 The block 501 is divided by a sun bracket 81 and a partition wall 800.
  • the front end of the key shaft 510 is connected to the speed reduction mechanism 300.
  • Reference numeral 22 1 denotes a mechanical spring formed on the outer periphery of the output shaft 220 so that the one-way clutch 350 can slide in the front-rear direction. It is mated. 250 is a pinion locking ring that regulates the axial movement of the pinion 200 coupled to the one-way clutch 350, and 450 is the output shaft.
  • the bearing for bearing 0 is fitted on the inner peripheral surface of a hole formed in the front of the housing 400.
  • 21 is a resin molded lever, one end of which is connected to the plunger 6100 of the magnet switch 600 and the other end is connected to the rear of the one-way clutch 350. Has been done.
  • Reference numeral 63 denotes a lead wire for connecting the magnet switch 600 and the brush 910, and the end of the magnet switch 600 on the side of the wire is provided with a nut. It is fixed to the cap 61 by the set 62.
  • Reference numeral 72 denotes a ventilation pipe fitted to the rear bracket 700, through the ventilation hole 71 of the rear bracket 700, and inside the rear bracket 700. Is connected to
  • the magnet switch 600 When the magnet switch 600 is energized by turning on a key switch (not shown), the brassiere passes through the lead wires 63 The voltage is applied to the shear 910, and the armature 540 rotates. The rotation of the armature 540 is decelerated by the speed reduction mechanism 300 and transmitted to the one-way clutch 350.
  • the magnet switch 600 when the magnet switch 600 is energized, the plunger 61 moves rightward in FIG. 3 and the one-way clutch is moved via the lever 21 as shown in FIG. Moving to the left, the combined pinion 200 moves to the left in FIG. 3 and engages with an engine ring gear (not shown).
  • a punch shaft 523 formed in the core plate 521 is formed during rotation of the armature 540.
  • the twisted air passages around 10 5 2 3 a make it possible for the armature 540 to form a blower.
  • the shock 501 and the sun bracket are formed.
  • External air flows through the gap between the air vent and the ventilation hole at the front end of the yoke 501, not shown, and the center bracket 81, not shown.
  • the air is sucked into the front side of the mater core 520, and this air is drawn by the twisted air passages 523a inside the armature 540, and the rear end of the mater core is formed. Sent in the direction of 540b.
  • Friction heat generated by the sliding contact between the brush 910 and the connector 51 also passes through the radially inner side of the coil 530 of the armature 540, and the brush heats.
  • the air flows toward the contact portion between the sheath 910 and the commutator 51, and is cooled well.
  • the heat generated at the contact between the brush 910 and the commutator 51 heats the entire armature 540 through the coil 530. However, heat is radiated well to the accelerating airflow from the inner peripheral surface of the punched hole 52 3 of the core plate 52 1.
  • the adjacent core plate 52 1 is connected to the adjacent core plate 52 1 by one slot pitch (slot) in the circumferential direction. If the number of lots is 25, it is shifted by 14.4 degrees), but it may be shifted by a small angle, for example, 3 degrees. In this case, the slot is also twisted in the circumferential direction, but the armature coil may be wound around it.
  • the same core plate 5 2 1 is used to reduce the number of laminations, and the amount of heat generated and the generation of abrasion powder change, such as armatures with different torque settings. Even if you can.
  • the punched hole 523 shown in FIG. 1 has a fan-shaped cross section, but other cross-sectional shapes are naturally possible.
  • the mode of this embodiment is the same as that of the embodiment 1 except that the armature coil 5 is extended to the small diameter side along the rear end surface of the armature core 52.
  • 30 is a starter motor with a disc-shaped commutator and coil end, which uses the coil end portion 53 0a as a commutator piece. It is pressed in the axial direction toward the end section 530a.
  • the circular commutator / coupling coil section 530a will be further described.
  • the coil end portion 530a is composed of a predetermined number of inner conductors 534 and a predetermined number of outer conductor groups 533 which are individually adhered to both sides of a resin plate without a sign. Consists of The inner conductors 4 are arranged in a spiral disk shape and are separated from each other by a spiral shape. It is provided.
  • the outer conductors 5 3 5 are arranged in a spiral disk shape and are separated from each other by a spiral gap, and their surfaces are in sliding contact with the brush 9 10. ing.
  • each inner conductor 534 is individually connected to the end of the lower conductor of the mating core 520 in the slot, and the diameter of each outer conductor 533 is The outer end in the direction is individually connected to the end of the upper conductor of the armature core 520 in the slot. Then, the radial inner end of each inner conductor 533 and the radial inner end of each outer conductor 533 -
  • the spiral gap 536 between the outer conductors 533 adjacent to each other forms an air passage of a kind of centrifugal fan.
  • the cooling air accelerated by the gap 533 flows in the centrifugal direction.
  • the airflow blown out to the brush-side end face of the mating core 52 by the air passages 52 a causes the inner and outer conductors 5. It is guided to the outside of the outer conductor 535 in the radial direction through the radially inner sides of 3 4 and 5 3 5, and is then sent in the centrifugal direction through the gap 536 described above, and the brush 9 1 In addition to cooling the outer conductors 5 and 5 that form the commutator pieces, the brush wear powder can be blown off satisfactorily.
  • the rotor of the rotating electric machine according to the present invention is useful as a starting motor for an internal combustion engine, and is particularly suitable for a rotor that needs to improve cooling performance. .

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Motor Or Generator Cooling System (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)

Abstract

Dans cette invention, un passage d'air (523a) est formé dans le noyau (520) du rotor par un trou traversant (523) ménagé dans chacune des plaques (521) du noyau, lesquelles sont disposées en strates de façon à constituer le noyau (520) du rotor, chaque trou étant en communication avec les autres. Dès lors que les plaques (521) du noyau sont disposées en strates dans une position où elles sont amenées à effectuer une rotation sur un angle prédéterminé les unes par rapport aux autres, le passage d'air (523a) suit une trajectoire vrillée en direction de l'un des côtés dans un sens circonférentiel. Par cette construction, un courant d'air est produit dans le passage d'air (523a) sous l'action de la révolution du noyau (520) du rotor, noyau (520) qui peut ainsi être refroidi de façon satisfaisante. Cette construction permet également de souffler les poussières d'usure d'une brosse.
PCT/JP1996/000515 1995-02-06 1996-03-04 Rotor de machine rotative WO1997033357A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP7018263A JPH08214481A (ja) 1995-02-06 1995-02-06 回転電機の回転子
PCT/JP1996/000515 WO1997033357A1 (fr) 1995-02-06 1996-03-04 Rotor de machine rotative

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP7018263A JPH08214481A (ja) 1995-02-06 1995-02-06 回転電機の回転子
PCT/JP1996/000515 WO1997033357A1 (fr) 1995-02-06 1996-03-04 Rotor de machine rotative

Publications (1)

Publication Number Publication Date
WO1997033357A1 true WO1997033357A1 (fr) 1997-09-12

Family

ID=26354915

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1996/000515 WO1997033357A1 (fr) 1995-02-06 1996-03-04 Rotor de machine rotative

Country Status (1)

Country Link
WO (1) WO1997033357A1 (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000017985A2 (fr) * 1998-09-23 2000-03-30 Hamilton Sundstrand Corporation Rotor pour machine dynamoelectrique
EP1220418A2 (fr) * 2000-12-27 2002-07-03 Asmo Co., Ltd. Noyau de moteur avec tôles de noyau empilés et son procédé d'empilage
GB2381390A (en) * 2001-09-26 2003-04-30 Visteon Global Tech Inc Pumping motor with skewed rotor laminations
DE10259047B4 (de) * 2002-01-17 2006-03-02 General Motors Corp. (N.D.Ges.D. Staates Delaware), Detroit Zentrifugalflüssigkeitskühlsystem für einen Elektromotor
US8937398B2 (en) 2011-03-10 2015-01-20 Wilic S.Ar.L. Wind turbine rotary electric machine
US8937397B2 (en) 2010-03-30 2015-01-20 Wilic S.A.R.L. Wind power turbine and method of removing a bearing from a wind power turbine
US8957555B2 (en) 2011-03-10 2015-02-17 Wilic S.Ar.L. Wind turbine rotary electric machine
US8975770B2 (en) 2010-04-22 2015-03-10 Wilic S.Ar.L. Wind power turbine electric generator and wind power turbine equipped with an electric generator
US9006918B2 (en) 2011-03-10 2015-04-14 Wilic S.A.R.L. Wind turbine
US9312741B2 (en) 2008-06-19 2016-04-12 Windfin B.V. Wind power generator equipped with a cooling system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06105492A (ja) * 1992-09-25 1994-04-15 Toshiba Corp 誘導主電動機

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06105492A (ja) * 1992-09-25 1994-04-15 Toshiba Corp 誘導主電動機

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
MICROFILM OF THE SPECIFICATION AND DRAWINGS ANNEXED TO THE WRITTEN APPLICATION OF JAPANESE UTILITY MODEL, Application No. 120085/1989 (Laid-open No. 60855/1991) (ASMO CO., LTD.), 14 June 1991. *
MICROFILM OF THE SPECIFICATION AND DRAWINGS ANNEXED TO THE WRITTEN APPLICATION OF JAPANESE UTILITY MODEL, Application No. 140104/1988 (Laid-open No. 60456/1990) (TOSHIBA CORP.), 2 May 1990. *
MICROFILM OF THE SPECIFICATION AND DRAWINGS ANNEXED TO THE WRITTEN APPLICATION OF JAPANESE UTILITY MODEL, Application No. 90072/1992 (Laid-open No. 48355/1994) (TOYO ELECTRIC MFG. CO., LTD.), 28 June 1994. *

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000017985A2 (fr) * 1998-09-23 2000-03-30 Hamilton Sundstrand Corporation Rotor pour machine dynamoelectrique
WO2000017985A3 (fr) * 1998-09-23 2000-06-08 Hamilton Sundstrand Corp Rotor pour machine dynamoelectrique
EP1220418A2 (fr) * 2000-12-27 2002-07-03 Asmo Co., Ltd. Noyau de moteur avec tôles de noyau empilés et son procédé d'empilage
EP1220418A3 (fr) * 2000-12-27 2005-01-12 Asmo Co., Ltd. Noyau de moteur avec tôles de noyau empilés et son procédé d'empilage
GB2381390A (en) * 2001-09-26 2003-04-30 Visteon Global Tech Inc Pumping motor with skewed rotor laminations
DE10259047B4 (de) * 2002-01-17 2006-03-02 General Motors Corp. (N.D.Ges.D. Staates Delaware), Detroit Zentrifugalflüssigkeitskühlsystem für einen Elektromotor
US9312741B2 (en) 2008-06-19 2016-04-12 Windfin B.V. Wind power generator equipped with a cooling system
US8937397B2 (en) 2010-03-30 2015-01-20 Wilic S.A.R.L. Wind power turbine and method of removing a bearing from a wind power turbine
US8975770B2 (en) 2010-04-22 2015-03-10 Wilic S.Ar.L. Wind power turbine electric generator and wind power turbine equipped with an electric generator
US8937398B2 (en) 2011-03-10 2015-01-20 Wilic S.Ar.L. Wind turbine rotary electric machine
US8957555B2 (en) 2011-03-10 2015-02-17 Wilic S.Ar.L. Wind turbine rotary electric machine
US9006918B2 (en) 2011-03-10 2015-04-14 Wilic S.A.R.L. Wind turbine

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