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WO2016113846A1 - Electric motor stator and electric motor - Google Patents

Electric motor stator and electric motor Download PDF

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Publication number
WO2016113846A1
WO2016113846A1 PCT/JP2015/050672 JP2015050672W WO2016113846A1 WO 2016113846 A1 WO2016113846 A1 WO 2016113846A1 JP 2015050672 W JP2015050672 W JP 2015050672W WO 2016113846 A1 WO2016113846 A1 WO 2016113846A1
Authority
WO
WIPO (PCT)
Prior art keywords
cover
electric motor
stator
laminated core
end surface
Prior art date
Application number
PCT/JP2015/050672
Other languages
French (fr)
Japanese (ja)
Inventor
齋藤　望
秀理 城野
佳樹 岡田
Original Assignee
三菱電機株式会社
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
Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to PCT/JP2015/050672 priority Critical patent/WO2016113846A1/en
Priority to JP2015532641A priority patent/JP5897221B1/en
Priority to CN201580073189.XA priority patent/CN107210639A/en
Priority to KR1020177018321A priority patent/KR20170084336A/en
Priority to TW104120291A priority patent/TWI568143B/en
Publication of WO2016113846A1 publication Critical patent/WO2016113846A1/en

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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
    • H02K1/12—Stationary parts of the magnetic circuit
    • 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
    • H02K3/50—Fastening of winding heads, equalising connectors, or connections thereto
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/02—Casings or enclosures characterised by the material thereof
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/22—Arrangements for cooling or ventilating by solid heat conducting material embedded in, or arranged in contact with, the stator or rotor, e.g. heat bridges

Definitions

  • the present invention relates to a motor stator and a motor in which a coil end protruding from an end face of a laminated core is covered with a cover.
  • a motor stator having a structure in which a coil is inserted into a laminated core increases the amount of heat generated from the coil, and thus a technique for efficiently discharging the heat generated by the coil is required.
  • Patent Document 1 describes a configuration in which a cover is fixed to the laminated core by fitting the laminated core and the cover together.
  • Patent Document 2 describes a configuration in which an end plate on which an internal thread is formed is welded to an end surface of a laminated core, and the cover is screwed to the end plate to fix the cover to the laminated core.
  • Patent Document 2 since the configuration described in Patent Document 1 fixes the cover by fitting the laminated core and the cover of the stator together, a step for fitting the cover to the laminated core is processed or a separate part. It is necessary to provide it. For this reason, productivity may fall. According to Patent Document 2, the stator becomes longer in the axial direction by the thickness of the end plate, which may hinder downsizing of the stator.
  • the present invention has been made in view of the above, and obtains a stator and an electric motor for an electric motor capable of suppressing a reduction in productivity, realizing downsizing, and efficiently discharging heat. For the purpose.
  • the present invention provides a laminated core in which a plurality of core members are laminated in a stator of an electric motor, and a coil from an end face in the axial direction of a central axis of the laminated core.
  • a coil inserted into the laminated core with the end protruding, a cover that is formed in a cylindrical shape and surrounds the coil end and is in contact with the end surface, and a space between the coil end and the cover A resin portion for fixing the cover and the end surface; and a contact portion between the end surface and the cover; and a relative relationship between the laminated core and the cover in a direction along the end surface.
  • an engaging portion for restricting movement.
  • FIG. 1 is an exploded perspective view showing a stator of an electric motor according to Embodiment 1.
  • FIG. Sectional drawing which shows the stator of the electric motor which concerns on Embodiment 1.
  • FIG. FIG. 2 is an enlarged view showing a part of FIG. Sectional drawing which shows the stator of the electric motor which concerns on Embodiment 2.
  • FIG. Sectional view along the line AA in FIG. Sectional drawing which shows the stator of the electric motor which concerns on Embodiment 3.
  • FIG. Sectional drawing which shows the stator of the electric motor which concerns on Embodiment 4.
  • FIG. Sectional drawing which shows the stator of the electric motor which concerns on Embodiment 5.
  • FIG. 6 The figure which shows an example of the stator of the electric motor which concerns on Embodiment 6.
  • FIG. 6 The figure which shows the other example of the stator of the electric motor which concerns on Embodiment 6.
  • FIG. 6 The figure which shows the other example of the cover which concerns on Embodiment 6.
  • FIG. 6 The figure which shows the other example of the stator of the electric motor which concerns on Embodiment 6.
  • FIG. The figure which shows the other example of the cover which concerns on Embodiment 6.
  • FIG. The figure which shows the other example of the stator of the electric motor which concerns on Embodiment 6.
  • FIG. 6 The figure which shows the other example of the cover which concerns on Embodiment 6.
  • FIG. 6 The figure which shows the other example of the stator of the electric motor which concerns on Embodiment 6.
  • FIG. The figure which shows the other example of the cover which concerns on Embodiment 6.
  • FIG. The figure which shows the other example of the stator of the electric motor which concerns on Embodiment 6.
  • FIG. The figure which shows an example of the electric motor which concerns on Embodiment 7.
  • FIG. 1 is an exploded perspective view of a stator 10 for an electric motor according to Embodiment 1 of the present invention.
  • illustration of the resin part 14 is abbreviate
  • FIG. 2 is a cross-sectional view showing the stator 10 of the electric motor.
  • FIG. 3 is an enlarged view of the end face 11a side of the laminated core 11 in FIG.
  • the stator 10 of the electric motor includes a laminated core 11 in which electromagnetic steel plates 11 g as a plurality of core members are laminated, and a coil 12 inserted into the laminated core 11.
  • the stator 10 of the electric motor is filled between the cover 13 disposed on the end faces 11 a and 11 b in the axial direction of the central axis AX of the laminated core 11 and the coil ends 12 a and 12 b of the coil 12 and the cover 13.
  • the engaging pin 15 which is an engaging portion for engaging the laminated core 11 and the cover 13.
  • the laminated core 11 is formed in a cylindrical shape in which a plurality of electromagnetic steel plates 11g are laminated in the axial direction of the central axis AX.
  • the electromagnetic steel sheet 11g is punched into a strip shape and fixed by caulking, welding, or adhesion.
  • a rotor is disposed inside the laminated core 11.
  • the end faces 11a and 11b of the laminated core 11 are formed in a planar shape.
  • the end faces 11a and 11b are provided with an insertion hole 11e for inserting the engagement pin 15.
  • the insertion hole 11e is formed to a depth equal to or greater than the length of the engagement pin 15, that is, the dimension in the axial direction of the central axis AX.
  • a plurality of insertion holes 11e are arranged around the central axis AX.
  • the laminated core 11 has a plurality of slots. The plurality of slots are arranged at intervals in the direction around the axis of the central axis AX.
  • the coil 12 is inserted into the slot of the laminated core 11. Coil ends 12 a and 12 b of the coil 12 protrude from end faces 11 a and 11 b of the laminated core 11.
  • the cover 13 is formed using a resin material having a higher electrical resistance value and thermal conductivity than the resin portion 14.
  • the cover 13 is formed in a cylindrical shape.
  • the cover 13 has end surfaces 13a and 13b formed at both ends in the axial direction of the central axis AX, and an inner peripheral surface 13c and an outer peripheral surface 13d formed along the direction around the axis of the central axis AX. .
  • the end surface on the laminated core 11 side in the axial direction of the central axis AX is defined as an end surface 13a
  • the end surface different from the end surface on the laminated core 11 side is defined as the end surface 13b.
  • the end faces 13a and 13b are formed in a planar shape.
  • the cover 13 is disposed in a state where the end surface 13 a is in contact with the end surfaces 11 a and 11 b of the laminated core 11.
  • An insertion hole 13e for inserting the engagement pin 15 is formed in the end surface 13a.
  • the insertion hole 13e is formed to a depth equal to or greater than the length of the engagement pin 15, that is, the dimension in the axial direction of the central axis AX.
  • a plurality of insertion holes 13e are arranged around the central axis AX.
  • the insertion hole 13e is provided at a position facing the insertion hole 11e when the cover 13 is disposed on the end surfaces 11a and 11b.
  • the cover 13 is disposed so as to surround the coil ends 12a and 12b.
  • An inner peripheral surface 13c of the cover 13 faces the coil ends 12a and 12b.
  • the outer peripheral surface 13 d of the cover 13 coincides with the outer peripheral surface 11 d of the laminated core 11. Accordingly, the stator 10 of the electric motor has the same outer diameter from the laminated core 11 to the cover 13.
  • the resin portion 14 is formed in an annular shape so as to cover the coil ends 12a and 12b and fill the spaces on the end surfaces 11a and 11b.
  • the resin portion 14 includes end surfaces 14a and 14b formed on both sides in the axial direction of the central axis AX, and an inner peripheral surface 14c and an outer peripheral surface 14d formed along the direction around the axis of the central axis AX. Yes.
  • the end surface 14a is bonded to the end surfaces 11a and 11b.
  • the outer peripheral surface 14 d is bonded to the inner peripheral surface 13 c of the cover 13. Thereby, the resin part 14 adheres and fixes the end faces 11 a and 11 b of the laminated core 11 and the cover 13.
  • the end surface 14 b is formed flush with the end surface 13 b of the cover 13.
  • the inner peripheral surface 14 c coincides with the inner peripheral surface 11 c of the laminated core 11.
  • the engagement pin 15 is provided for each pair of the insertion hole 11e and the insertion hole 13e facing each other. One end of the engaging pin 15 is inserted into the insertion hole 11 e of the laminated core 11, and the other end is inserted into the insertion hole 13 e of the cover 13. In a state where the engagement pin 15 is inserted into the insertion hole 11e and the insertion hole 13e, the laminated core 11 and the cover 13 are engaged via the engagement pin 15 in a direction parallel to the end surfaces 11a and 11b. Therefore, by providing the engagement pin 15, relative movement in the direction along the end surfaces 11 a and 11 b between the laminated core 11 and the cover 13 is restricted.
  • the relative movement between the laminated core 11 and the cover 13 includes a relative rotational movement of the central axis AX around the axis.
  • the cover 13 When manufacturing the above-described stator 10 for an electric motor, first, the cover 13 is disposed on the end faces 11a and 11b of the laminated core 11 so as to surround the coil ends 12a and 12b.
  • one end of the engagement pin 15 is inserted into the insertion hole 11e of the laminated core 11, and the other end is inserted into the insertion hole 13e.
  • the laminated core 11 and the cover 13 are engaged with each other in the direction along the end surfaces 11a and 11b via the engagement pin 15. Therefore, relative movement of the laminated core 11 and the cover 13 in the direction along the end surfaces 11a and 11b is restricted.
  • a cylindrical member or a columnar member is inserted into the laminated core 11, and the end surface 13b of the cover 13 on the end surface 11b side is closed with a plate-like member.
  • molten resin is poured into the inside of the cover 13 on the end face 11a side.
  • the molten resin is supplied to the end surface 11b side through the coil 12.
  • the resin portion 14 is formed by curing the molten resin in a state where the resin is filled in the space on the end surface 11a and the space on the end surface 11b.
  • the coil ends 12 a and 12 b are covered with the resin portion 14. Further, the laminated core 11 and the cover 13 are bonded and fixed.
  • the amount of heat generated from the stator 10 of the motor increases.
  • the amount of heat generated from the coil 12 is large.
  • the stator 10 of the electric motor has the cover 13 arranged in a state of covering the outer periphery of the coil ends 12a and 12b, and the coil ends 12a and 12b and the cover 13 are arranged.
  • the resin portion 14 is filled in between. Thereby, the heat generated in the coil 12 is efficiently discharged to the outside from the coil ends 12 a and 12 b through the resin portion 14 and the cover 13.
  • the engagement pin that engages the laminated core 11 and the cover 13 to restrict the relative movement between the laminated core 11 and the cover 13 in the direction along the end surfaces 11a and 11b. 15 is provided, the relative movement between the laminated core 11 and the cover 13 when the resin portion 14 is formed can be suppressed with a simple configuration. Thereby, since it is not necessary to fit the laminated core 11 and the cover 13 and there is no need for screw connection, it is possible to suppress a decrease in productivity.
  • the stator 10 for an electric motor that can suppress a reduction in productivity, can be downsized, and can efficiently discharge the heat generated in the coil 12. can get.
  • the cover 13 is formed using a resin material having an electric resistance higher than that of the resin portion 14, the coil ends 12 a and 12 b can be electrically insulated from the outside in the cover 13. Further, since the cover 13 is formed using a resin material having a higher thermal conductivity than the resin portion 14, the heat generated in the coil 12 can be efficiently discharged.
  • FIG. FIG. 4 is a cross-sectional view showing the stator 20 of the electric motor according to the second embodiment.
  • FIG. 5 is a diagram showing a cross section taken along line AA in FIG.
  • the same components as those of the stator 10 of the electric motor according to the first embodiment are denoted by the same reference numerals, and description thereof is omitted or simplified.
  • the stator 20 of the electric motor includes a laminated core 21, a coil 12 inserted into the laminated core 21, a cover 23 disposed on end surfaces 21 a and 21 b of the laminated core 21, and a coil end 12 a. , 12b and the cover 23, the resin portion 14 is provided.
  • the laminated core 21 has a configuration in which a plurality of electromagnetic steel plates 21g punched in a strip shape are laminated and joined by a caulking plate 25 which is a fixed portion.
  • the electromagnetic steel plate 21g is formed with a notch 21e for fitting the crimping plate 25 as an engaging portion.
  • a plurality of notches 21e are formed around the central axis AX.
  • the plurality of electromagnetic steel plates 21g are stacked in a state where the positions of the notches 21e are aligned. For this reason, the laminated core 21 is formed with a groove 21f along the axial direction of the central axis AX by the notch 21e of each electromagnetic steel plate 21g.
  • the crimping plate 25 is pushed into the groove 21f from the outer periphery of the laminated core 21 by a crimping tool 26 shown in FIG.
  • the caulking plate 25 is disposed so as to protrude from the end surface 21 a and the end surface 21 b of the laminated core 21 in the axial direction of the central axis AX.
  • the cover 23 is formed with a notch 23e having a shape corresponding to the protrusions 25a and 25b.
  • the protrusions 25a and 25b are fitted into the notches 23e in a state where the cover 23 is disposed on the end faces 21a and 21b of the laminated core 21.
  • the protrusions 25a and 25b are fitted into the notch 23e, the laminated core 21 and the cover 23 are engaged via the protrusions 25a and 25b. Thereby, the relative movement in the direction along the end surfaces 21a and 21b between the laminated core 21 and the cover 23 is restricted.
  • the relative movement between the laminated core 21 and the cover 23 includes a relative rotational movement of the central axis AX around the axis.
  • the caulking plate 25 that fixes the plurality of electromagnetic steel plates 21 g protrudes from the end surfaces 21 a and 21 b of the laminated core 21, and the protruding portions 25 a and 25 b engage with the cover 23.
  • the relative movement between the laminated core 21 and the cover 23 can be suppressed without changing the design of the electromagnetic steel sheet 21g.
  • FIG. FIG. 6 is a diagram illustrating a stator 30 of the electric motor according to the third embodiment.
  • the same components as those of the stator 10 of the electric motor according to the first embodiment are denoted by the same reference numerals, and description thereof is omitted or simplified.
  • a configuration in which an electromagnetic steel plate is fixed using a through pin 35 that is an engaging portion instead of the crimping plate 25 will be described as an example.
  • the stator 30 of the electric motor is disposed on the laminated core 31 in which the through hole 31 f is formed, the coil 12 inserted into the laminated core 31, and the end faces 31 a and 31 b of the laminated core 31.
  • a cover 13 and a resin portion 14 filled between the coil ends 12a and 12b and the cover 13 are provided.
  • the laminated core 31 has a configuration in which a plurality of electromagnetic steel plates 31g punched in a strip shape are laminated and joined by through pins 35 which are fixed portions. An insertion hole 31e for inserting the through pin 35 is formed in the electromagnetic steel plate 31g. A plurality of insertion holes 31e are formed in the direction around the central axis AX. The plurality of electromagnetic steel plates 31g are stacked in a state where the positions of the insertion holes 31e are aligned. For this reason, the laminated core 31 is formed with a through hole 31f along the axial direction of the central axis AX by the insertion hole 31e of each electromagnetic steel plate 31g.
  • the penetrating pin 35 is formed longer than the height of the laminated core 31 (the distance between the end surface 31a and the end surface 31b in the axial direction of the central axis AX).
  • the through pin 35 protrudes from the end surface 31a and the end surface 31b of the laminated core 31 in the axial direction of the central axis AX and is inserted into the through hole 31f.
  • An insertion hole 13e for inserting the through pin 35 is formed in the end surface 13a of the cover 13.
  • the protruding portions 35 a and 35 b are inserted into the insertion holes 13 e in a state where the cover 13 is disposed on the end surfaces 31 a and 31 b of the laminated core 31.
  • the protruding portions 35a and 35b are inserted into the insertion hole 13e in a state where the cover 13 is disposed on the end surfaces 31 a and 31 b of the laminated core 31.
  • the protruding portions 35a and 35b By inserting the protruding portions 35a and 35b into the insertion hole 13e, the laminated core 31 and the cover 13 are engaged via the protruding portions 35a and 35b. Thereby, the relative movement in the direction along the end surfaces 31a and 31b between the laminated core 31 and the cover 13 is restricted.
  • the relative movement between the laminated core 31 and the cover 13 includes a relative rotational movement of the central axis AX around the
  • the through pin 35 that fixes the plurality of electromagnetic steel plates 31 g protrudes from the end surfaces 31 a and 31 b of the laminated core 31, and the protruding portions 35 a and 35 b are engaged with the cover 13. Therefore, the relative movement between the laminated core 31 and the cover 13 can be suppressed without changing the design of the electromagnetic steel sheet 31g.
  • FIG. FIG. 7 is a diagram illustrating a stator 40 of the electric motor according to the fourth embodiment.
  • the same components as those of the stator 10 of the electric motor according to the first embodiment are denoted by the same reference numerals, and description thereof is omitted or simplified.
  • a configuration in which an engaging portion is provided on an end surface of a laminated core will be described as an example.
  • the stator 40 of the electric motor is formed on the laminated core 41 having the protrusion 45 that is the engaging portion, the coil 12 inserted into the laminated core 41, and the end faces 41 a and 41 b of the laminated core 41.
  • the cover 13 is disposed, and the resin portion 14 filled between the coil ends 12a and 12b and the cover 13 is provided.
  • the laminated core 41 has a configuration in which a plurality of electromagnetic steel plates 41g punched in a strip shape are laminated and fixed by caulking, welding, or adhesion. Projections 45 are formed on the end surfaces 41 a and 41 b of the laminated core 41.
  • the said existing protrusion part may be the projection part 45.
  • FIG. A plurality of the protrusions 45 are arranged in the direction around the central axis AX.
  • An insertion hole 13e for inserting the protrusion 45 is formed in the end surface 13a of the cover 13.
  • the insertion hole 13e is provided at a position facing the protrusion 45.
  • the protruding portion 45 is inserted into the insertion hole 13 e in a state where the cover 13 is disposed on the end faces 41 a and 41 b of the laminated core 41.
  • the protrusion 45 By inserting the protrusion 45 into the insertion hole 13 e, the laminated core 41 and the cover 13 are engaged via the protrusion 45. Thereby, the relative movement in the direction along the end surfaces 41a and 41b between the laminated core 41 and the cover 13 is restricted.
  • the relative movement between the laminated core 41 and the cover 13 includes a relative rotational movement of the central axis AX around the axis.
  • the protrusions 45 that are the engaging portions are provided on the end faces 41a and 41b of the laminated core 41, so that the laminated core 41 and the cover 13 are better than the first embodiment.
  • the number of parts for engaging can be reduced. Thereby, the further improvement of productivity can be aimed at.
  • FIG. FIG. 8 shows a stator 50 of the electric motor according to the fifth embodiment.
  • the same components as those of the stator 10 of the electric motor according to the first embodiment are denoted by the same reference numerals, and description thereof is omitted or simplified.
  • a configuration in which an engagement portion is provided on the cover side will be described as an example.
  • the stator 50 of the motor includes a laminated core 11, a coil 12 inserted into the laminated core 11, a cover 53 disposed on the end faces 11a and 11b of the laminated core 11, and a coil end 12a. , 12b and the cover 53, the resin portion 14 is provided.
  • the cover 53 has end surfaces 53a and 53b formed at both ends in the axial direction of the central axis AX, and an inner peripheral surface 53c and an outer peripheral surface 53d formed along the direction around the central axis AX. .
  • the end surface 53a is provided with a protrusion 55 that is an engaging portion.
  • the protrusion 55 protrudes toward the laminated core 11 side.
  • the protrusion 55 is provided at a position facing the insertion hole 11 e of the laminated core 11.
  • the protruding portion 55 is inserted into the insertion hole 11e in a state where the cover 53 is disposed on the end faces 11a and 11b of the laminated core 11.
  • the protrusion 55 By inserting the protrusion 55 into the insertion hole 11 e, the laminated core 11 and the cover 53 are engaged via the protrusion 55. Thereby, the relative movement in the direction along the end surfaces 11a and 11b between the laminated core 11 and the cover 53 is restricted.
  • the relative movement between the laminated core 11 and the cover 53 includes a relative rotational movement of the central axis AX around the axis.
  • the protrusion 55 that is the engaging portion is provided on the end surface 53a of the cover 53, so that the laminated core 11 and the cover 53 are engaged compared to the first embodiment. It is possible to reduce the number of parts for making them. Thereby, the further improvement of productivity can be aimed at.
  • FIG. FIGS. 9 to 20 are diagrams showing the configuration of the cover and the configuration of the stator of the electric motor according to the sixth embodiment.
  • the same components as those of the stator 10 of the electric motor according to the first embodiment are denoted by the same reference numerals, and description thereof is omitted or simplified.
  • a modification of the configuration of the inner peripheral surface of the cover will be described.
  • the cover 63 shown in FIG. 9 has a groove 63e that is a recess in the inner peripheral surface 63c.
  • the groove 63e is formed in an annular shape over the entire circumference of the inner peripheral surface 63c.
  • a cover 63 is used for the stator 60A of the electric motor shown in FIG.
  • the protruding portion 14e of the resin portion 14 protrudes outward from the outer peripheral surface 14d, and the protruding portion 14e is filled in the groove portion 63e. Thereby, it can suppress that the cover 63 remove
  • the cover 64 shown in FIG. 11 has a recess 64e which is a recess on the inner peripheral surface 64c. A plurality of depressions 64e are formed in the direction around the central axis AX.
  • a cover 64 is used for the stator 60B of the electric motor shown in FIG. In the stator 60B of the electric motor, the protruding portion 14e of the resin portion 14 protrudes outward from the outer peripheral surface 14d and is filled in the hollow portion 64e. Thereby, it can suppress that the cover 64 remove
  • the cover 65 shown in FIG. 13 has a through hole 65e which is a recess in the inner peripheral surface 65c.
  • the through hole 65e penetrates the inner peripheral surface 65c and the outer peripheral surface 65d.
  • a plurality of through holes 65e are formed in the direction around the central axis AX.
  • a cover 65 is used for the stator 60C of the electric motor shown in FIG. In the stator 60C of the electric motor, the protruding portion 14e of the resin portion 14 protrudes outward from the outer peripheral surface 14d and is filled in the through hole 65e. Thereby, it can suppress that the cover 65 remove
  • the covers 63, 64, and 65 shown in FIGS. 9 to 14 may have a configuration in which convex portions are provided on the inner peripheral surfaces 63c, 64c, and 65c instead of the concave portions or together with the concave portions. Even in this case, it is possible to prevent the covers 63, 64, 65 from coming off in the axial direction of the central axis AX.
  • the tapered portion 66e has a tapered portion 66e which is a reduced diameter portion on the inner peripheral surface 66c.
  • the tapered portion 66e is formed such that the diameter of the inner peripheral surface 66c decreases from the end surface 66b of the cover 66 toward the end surface 66a.
  • FIG. 15 the configuration in which the tapered portion 66e is formed over the entire inner peripheral surface 66c in the axial direction of the central axis AX is described as an example. However, the configuration is not limited thereto, and the axial direction is not limited thereto.
  • the taper part 66e may be formed in a part of the inner peripheral surface 66c.
  • a cover 66 is used for the stator 60D of the electric motor shown in FIG.
  • the outer peripheral surface 14d of the resin portion 14 is formed along the tapered portion 66e. Therefore, the outer peripheral surface 14d of the resin portion 14 is formed to have a larger diameter from the end surface 14a toward the end surface 14b. Thereby, it can suppress that the cover 66 remove
  • the cover 67 shown in FIG. 17 has a stepped portion 67e which is a reduced diameter portion on the inner peripheral surface 67c.
  • the stepped portion 67e is formed such that the diameter on the end surface 67a side of the inner peripheral surface 67c is smaller than the diameter of the end surface 67b.
  • FIG. 17 the configuration in which the stepped portion 67e is formed in two steps in the axial direction of the central axis AX is described as an example. However, the configuration is not limited to this, and may be formed in three or more steps.
  • a cover 67 is used for the stator 60E of the electric motor shown in FIG. In the stator 60E of the electric motor, the outer peripheral surface 14d of the resin portion 14 is formed along the stepped portion 67e.
  • the outer peripheral surface 14d of the resin portion 14 is formed such that the diameter of the end surface 14b is larger than the diameter on the end surface 14a side. Therefore, it can suppress that the cover 67 remove
  • a cover 68 is used for the stator 60F of the electric motor shown in FIG. In the stator 60F of the electric motor, it is possible to easily maintain an insulating state between the cover 68 and the coil ends 12a and 12b. Thereby, the workability of attaching the cover 68 is improved.
  • FIG. 21 is a cross-sectional view showing an example of an electric motor 70 according to the seventh embodiment.
  • an electric motor 70 according to the seventh embodiment includes a stator 71, a rotor 72 disposed inside the stator 71, and a bearing 74 assembled to a shaft 73 of the rotor 72.
  • the bracket 75 is press-fitted into the stator 71.
  • the stator 71 shown in FIG. 21 is exemplified by the stator 10 of the electric motor described in the first embodiment, but is not limited to this, and any of the stators described in the second to sixth embodiments. A stator of such an electric motor may be used.
  • heat generated in the coil 12 of the stator 71 is transferred from the coil ends 12a and 12b to the bottom surface portions 75a and 75b and the side surface portion 75c of the bracket 75 via the resin portion 14 and the cover 13. It is transmitted and discharged to the outside. Thereby, the heat generated in the coil 12 can be efficiently discharged.
  • the configuration described in the above embodiment shows an example of the contents of the present invention, and can be combined with another known technique, and can be combined with other configurations without departing from the gist of the present invention. It is also possible to omit or change the part.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)

Abstract

An electric motor stator is provided with: a laminated core (11) formed by laminating a plurality of magnetic steel sheets (11g); a coil (12) inserted into the laminated core (11) while the coil ends (12a, 12b) are projected from the end surfaces (11a, 11b) of the laminated core (11); a cover (13) formed in a cylindrical shape and disposed enclosing the coil ends (12a, 12b) and abutting the end surfaces (11a, 11b); a resin portion (14) filled between the coil ends (12a, 12b) and the cover (13) and securing the cover (13) and the end surfaces (11a, 11b) together; and an engaging pin (15) provided in the abutting portion between the end surfaces (11a, 11b) and the cover (13) and restricting the relative movement between the laminated core (11) and the cover (13) in a direction along the end surfaces (11a, 11b).

Description

電動機の固定子及び電動機Electric motor stator and electric motor
　本発明は、積層コアの端面から突出するコイルエンドをカバーで覆った電動機の固定子及び電動機に関する。 The present invention relates to a motor stator and a motor in which a coil end protruding from an end face of a laminated core is covered with a cover.
　近年、電動機の高出力化又は高トルク化への要求が高まっている。電動機が高出力化又は高トルク化する場合、電動機の固定子からの発熱量が大きくなる。積層コアにコイルが挿入された構成の電動機の固定子は、コイルからの発熱量が大きくなるため、コイルで発生する熱を効率的に排出する技術が求められる。 In recent years, there is an increasing demand for higher output or higher torque of electric motors. When the motor has a high output or a high torque, the amount of heat generated from the stator of the motor increases. A motor stator having a structure in which a coil is inserted into a laminated core increases the amount of heat generated from the coil, and thus a technique for efficiently discharging the heat generated by the coil is required.
　熱伝導性を有するカバーでコイルエンドの外周を覆い、コイルエンドとカバーとの間に樹脂を充填する構成が提案されている。特許文献１には、積層コアとカバーとを嵌め合わせることでカバーを積層コアに固定する構成が記載されている。特許文献２には、雌ねじが形成された端板を積層コアの端面に溶接し、カバーを端板にねじ締結することでカバーを積層コアに固定する構成が記載されている。 A configuration has been proposed in which the outer periphery of the coil end is covered with a cover having thermal conductivity, and resin is filled between the coil end and the cover. Patent Document 1 describes a configuration in which a cover is fixed to the laminated core by fitting the laminated core and the cover together. Patent Document 2 describes a configuration in which an end plate on which an internal thread is formed is welded to an end surface of a laminated core, and the cover is screwed to the end plate to fix the cover to the laminated core.
特開２０１０－０６８６９９号公報JP 2010-068699 A 特開平６－７０５０８号公報JP-A-6-70508
　しかしながら、上記特許文献１に記載の構成は、固定子の積層コアとカバーとを嵌め合わせることでカバーを固定するものであるため、積層コアにカバーを嵌めるための段差を加工により又は別部品で設ける必要がある。このため、生産性が低下する可能性がある。また、特許文献２によれば、端板の厚さ分、固定子が軸線方向に長くなるため、固定子の小型化の妨げになる可能性がある。 However, since the configuration described in Patent Document 1 fixes the cover by fitting the laminated core and the cover of the stator together, a step for fitting the cover to the laminated core is processed or a separate part. It is necessary to provide it. For this reason, productivity may fall. According to Patent Document 2, the stator becomes longer in the axial direction by the thickness of the end plate, which may hinder downsizing of the stator.
　本発明は、上記に鑑みてなされたものであって、生産性の低下を抑制し、小型化を実現可能とし、かつ熱を効率的に排出することが可能な電動機の固定子及び電動機を得ることを目的とする。 The present invention has been made in view of the above, and obtains a stator and an electric motor for an electric motor capable of suppressing a reduction in productivity, realizing downsizing, and efficiently discharging heat. For the purpose.
　上述した課題を解決し、目的を達成するために、本発明は、電動機の固定子において、複数のコア部材が積層された積層コアと、前記積層コアのうち中心軸の軸線方向の端面からコイルエンドが突出した状態で前記積層コアに挿入されたコイルと、筒状に形成され、前記コイルエンドを囲い前記端面に当接して配置されたカバーと、前記コイルエンドと前記カバーとの間に充填され、前記カバーと前記端面とを固定する樹脂部と、前記端面と前記カバーとの当接部分に設けられ、前記端面に沿った方向への前記積層コアと前記カバーとの間の相対的な移動を規制する係合部とを備える。 In order to solve the problems described above and achieve the object, the present invention provides a laminated core in which a plurality of core members are laminated in a stator of an electric motor, and a coil from an end face in the axial direction of a central axis of the laminated core. A coil inserted into the laminated core with the end protruding, a cover that is formed in a cylindrical shape and surrounds the coil end and is in contact with the end surface, and a space between the coil end and the cover A resin portion for fixing the cover and the end surface; and a contact portion between the end surface and the cover; and a relative relationship between the laminated core and the cover in a direction along the end surface. And an engaging portion for restricting movement.
　本発明によれば、生産性の低下を抑制し、小型化を実現可能とし、かつ熱を効率的に排出することが可能になる、という効果を奏する。 According to the present invention, there is an effect that it is possible to suppress a decrease in productivity, to realize downsizing, and to efficiently discharge heat.
実施の形態１に係る電動機の固定子を示す分解斜視図1 is an exploded perspective view showing a stator of an electric motor according to Embodiment 1. FIG. 実施の形態１に係る電動機の固定子を示す断面図Sectional drawing which shows the stator of the electric motor which concerns on Embodiment 1. FIG. 図２の一部を拡大して示す図FIG. 2 is an enlarged view showing a part of FIG. 実施の形態２に係る電動機の固定子を示す断面図Sectional drawing which shows the stator of the electric motor which concerns on Embodiment 2. FIG. 図４におけるＡ－Ａ線に沿った断面図Sectional view along the line AA in FIG. 実施の形態３に係る電動機の固定子を示す断面図Sectional drawing which shows the stator of the electric motor which concerns on Embodiment 3. FIG. 実施の形態４に係る電動機の固定子を示す断面図Sectional drawing which shows the stator of the electric motor which concerns on Embodiment 4. FIG. 実施の形態５に係る電動機の固定子を示す断面図Sectional drawing which shows the stator of the electric motor which concerns on Embodiment 5. FIG. 実施の形態６に係るカバーの一例を示す図The figure which shows an example of the cover which concerns on Embodiment 6. 実施の形態６に係る電動機の固定子の一例を示す図The figure which shows an example of the stator of the electric motor which concerns on Embodiment 6. 実施の形態６に係るカバーの他の例を示す図The figure which shows the other example of the cover which concerns on Embodiment 6. FIG. 実施の形態６に係る電動機の固定子の他の例を示す図The figure which shows the other example of the stator of the electric motor which concerns on Embodiment 6. FIG. 実施の形態６に係るカバーの他の例を示す図The figure which shows the other example of the cover which concerns on Embodiment 6. FIG. 実施の形態６に係る電動機の固定子の他の例を示す図The figure which shows the other example of the stator of the electric motor which concerns on Embodiment 6. FIG. 実施の形態６に係るカバーの他の例を示す図The figure which shows the other example of the cover which concerns on Embodiment 6. FIG. 実施の形態６に係る電動機の固定子の他の例を示す図The figure which shows the other example of the stator of the electric motor which concerns on Embodiment 6. FIG. 実施の形態６に係るカバーの他の例を示す図The figure which shows the other example of the cover which concerns on Embodiment 6. FIG. 実施の形態６に係る電動機の固定子の他の例を示す図The figure which shows the other example of the stator of the electric motor which concerns on Embodiment 6. FIG. 実施の形態６に係るカバーの他の例を示す図The figure which shows the other example of the cover which concerns on Embodiment 6. FIG. 実施の形態６に係る電動機の固定子の他の例を示す図The figure which shows the other example of the stator of the electric motor which concerns on Embodiment 6. FIG. 実施の形態７に係る電動機の一例を示す図The figure which shows an example of the electric motor which concerns on Embodiment 7.
　以下に、本発明の実施の形態に係る電動機の固定子を図面に基づいて詳細に説明する。なお、この実施の形態によりこの発明が限定されるものではない。 Hereinafter, a stator of an electric motor according to an embodiment of the present invention will be described in detail based on the drawings. Note that the present invention is not limited to the embodiments.
実施の形態１．　
　図１は、本発明の実施の形態１に係る電動機の固定子１０の分解斜視図である。ただし、図１では、樹脂部１４の図示を省略している。図２は、電動機の固定子１０を示す断面図である。図３は、図２のうち積層コア１１の端面１１ａ側を拡大して示している。 Embodiment 1 FIG.
FIG. 1 is an exploded perspective view of a stator 10 for an electric motor according to Embodiment 1 of the present invention. However, illustration of the resin part 14 is abbreviate | omitted in FIG. FIG. 2 is a cross-sectional view showing the stator 10 of the electric motor. FIG. 3 is an enlarged view of the end face 11a side of the laminated core 11 in FIG.
　図１から図３に示すように、電動機の固定子１０は、複数のコア部材である電磁鋼板１１ｇが積層された積層コア１１と、積層コア１１に挿入されたコイル１２とを備えている。また、電動機の固定子１０は、積層コア１１のうち中心軸ＡＸの軸線方向の端面１１ａ，１１ｂ上に配置されたカバー１３と、コイル１２のコイルエンド１２ａ，１２ｂとカバー１３との間に充填された樹脂部１４と、積層コア１１とカバー１３とを係合する係合部である係合ピン１５とを備えている。 As shown in FIGS. 1 to 3, the stator 10 of the electric motor includes a laminated core 11 in which electromagnetic steel plates 11 g as a plurality of core members are laminated, and a coil 12 inserted into the laminated core 11. In addition, the stator 10 of the electric motor is filled between the cover 13 disposed on the end faces 11 a and 11 b in the axial direction of the central axis AX of the laminated core 11 and the coil ends 12 a and 12 b of the coil 12 and the cover 13. And the engaging pin 15 which is an engaging portion for engaging the laminated core 11 and the cover 13.
　積層コア１１は、複数の電磁鋼板１１ｇが中心軸ＡＸの軸線方向に積層されており、円筒状に形成される。電磁鋼板１１ｇは、帯状に打ち抜かれ、かしめ、溶接、又は接着で固定される。積層コア１１の内側には、回転子が配置される。積層コア１１の端面１１ａ，１１ｂは、平面状に形成される。端面１１ａ，１１ｂには、係合ピン１５を挿入するための挿入孔１１ｅが設けられる。挿入孔１１ｅは、係合ピン１５の長さ、すなわち中心軸ＡＸの軸線方向の寸法以上の深さに形成される。挿入孔１１ｅは、中心軸ＡＸの軸回り方向に複数配置される。積層コア１１は、複数のスロットを有する。複数のスロットは、中心軸ＡＸの軸回り方向に間隔を空けて配置される。 The laminated core 11 is formed in a cylindrical shape in which a plurality of electromagnetic steel plates 11g are laminated in the axial direction of the central axis AX. The electromagnetic steel sheet 11g is punched into a strip shape and fixed by caulking, welding, or adhesion. A rotor is disposed inside the laminated core 11. The end faces 11a and 11b of the laminated core 11 are formed in a planar shape. The end faces 11a and 11b are provided with an insertion hole 11e for inserting the engagement pin 15. The insertion hole 11e is formed to a depth equal to or greater than the length of the engagement pin 15, that is, the dimension in the axial direction of the central axis AX. A plurality of insertion holes 11e are arranged around the central axis AX. The laminated core 11 has a plurality of slots. The plurality of slots are arranged at intervals in the direction around the axis of the central axis AX.
　コイル１２は、積層コア１１のスロットに挿入される。コイル１２のコイルエンド１２ａ，１２ｂは、積層コア１１の端面１１ａ，１１ｂから突出している。 The coil 12 is inserted into the slot of the laminated core 11. Coil ends 12 a and 12 b of the coil 12 protrude from end faces 11 a and 11 b of the laminated core 11.
　カバー１３は、樹脂部１４よりも電気抵抗値及び熱伝導率の高い樹脂材料を用いて形成される。カバー１３は、円筒状に形成される。カバー１３は、中心軸ＡＸの軸線方向の両端に形成された端面１３ａ，１３ｂと、中心軸ＡＸの軸回り方向に沿って形成された内周面１３ｃ及び外周面１３ｄと、を有している。端面１３ａ，１３ｂについては、中心軸ＡＸの軸線方向について積層コア１１側の端面を端面１３ａとし、積層コア１１側の端面とは異なる端面を端面１３ｂとする。 The cover 13 is formed using a resin material having a higher electrical resistance value and thermal conductivity than the resin portion 14. The cover 13 is formed in a cylindrical shape. The cover 13 has end surfaces 13a and 13b formed at both ends in the axial direction of the central axis AX, and an inner peripheral surface 13c and an outer peripheral surface 13d formed along the direction around the axis of the central axis AX. . Regarding the end surfaces 13a and 13b, the end surface on the laminated core 11 side in the axial direction of the central axis AX is defined as an end surface 13a, and the end surface different from the end surface on the laminated core 11 side is defined as the end surface 13b.
　端面１３ａ，１３ｂは、平面状に形成される。カバー１３は、端面１３ａが積層コア１１の端面１１ａ，１１ｂに当接した状態で配置される。端面１３ａには、係合ピン１５を挿入するための挿入孔１３ｅが形成される。挿入孔１３ｅは、係合ピン１５の長さ、すなわち中心軸ＡＸの軸線方向の寸法以上の深さに形成される。挿入孔１３ｅは、中心軸ＡＸの軸回り方向に複数配置される。挿入孔１３ｅは、端面１１ａ，１１ｂ上にカバー１３を配置した場合に挿入孔１１ｅに対向する位置に設けられる。 The end faces 13a and 13b are formed in a planar shape. The cover 13 is disposed in a state where the end surface 13 a is in contact with the end surfaces 11 a and 11 b of the laminated core 11. An insertion hole 13e for inserting the engagement pin 15 is formed in the end surface 13a. The insertion hole 13e is formed to a depth equal to or greater than the length of the engagement pin 15, that is, the dimension in the axial direction of the central axis AX. A plurality of insertion holes 13e are arranged around the central axis AX. The insertion hole 13e is provided at a position facing the insertion hole 11e when the cover 13 is disposed on the end surfaces 11a and 11b.
　カバー１３は、コイルエンド１２ａ，１２ｂを囲んで配置される。カバー１３の内周面１３ｃは、コイルエンド１２ａ，１２ｂに対向している。カバー１３の外周面１３ｄは、積層コア１１の外周面１１ｄに一致している。したがって、電動機の固定子１０は、積層コア１１からカバー１３にかけて外径が同一となっている。 The cover 13 is disposed so as to surround the coil ends 12a and 12b. An inner peripheral surface 13c of the cover 13 faces the coil ends 12a and 12b. The outer peripheral surface 13 d of the cover 13 coincides with the outer peripheral surface 11 d of the laminated core 11. Accordingly, the stator 10 of the electric motor has the same outer diameter from the laminated core 11 to the cover 13.
　樹脂部１４は、コイルエンド１２ａ，１２ｂを覆うと共に、端面１１ａ，１１ｂ上の空間を埋めた状態で円環状に形成される。樹脂部１４は、中心軸ＡＸの軸線方向の両側に形成された端面１４ａ，１４ｂと、中心軸ＡＸの軸回り方向に沿って形成された内周面１４ｃ及び外周面１４ｄと、を有している。 The resin portion 14 is formed in an annular shape so as to cover the coil ends 12a and 12b and fill the spaces on the end surfaces 11a and 11b. The resin portion 14 includes end surfaces 14a and 14b formed on both sides in the axial direction of the central axis AX, and an inner peripheral surface 14c and an outer peripheral surface 14d formed along the direction around the axis of the central axis AX. Yes.
　端面１４ａは、端面１１ａ，１１ｂに接着されている。また、外周面１４ｄは、カバー１３の内周面１３ｃに接着されている。これにより、樹脂部１４は、積層コア１１の端面１１ａ，１１ｂとカバー１３とを接着固定している。端面１４ｂは、カバー１３の端面１３ｂと面一に形成される。内周面１４ｃは、積層コア１１の内周面１１ｃに一致している。 The end surface 14a is bonded to the end surfaces 11a and 11b. The outer peripheral surface 14 d is bonded to the inner peripheral surface 13 c of the cover 13. Thereby, the resin part 14 adheres and fixes the end faces 11 a and 11 b of the laminated core 11 and the cover 13. The end surface 14 b is formed flush with the end surface 13 b of the cover 13. The inner peripheral surface 14 c coincides with the inner peripheral surface 11 c of the laminated core 11.
　係合ピン１５は、対向する挿入孔１１ｅ及び挿入孔１３ｅの組ごとに設けられる。係合ピン１５は、一端が積層コア１１の挿入孔１１ｅに挿入され、他端がカバー１３の挿入孔１３ｅに挿入される。係合ピン１５が挿入孔１１ｅ及び挿入孔１３ｅに挿入された状態において、積層コア１１とカバー１３とは、端面１１ａ，１１ｂに平行な方向について、係合ピン１５を介して係合される。したがって、係合ピン１５が設けられることにより、積層コア１１とカバー１３との間の端面１１ａ，１１ｂに沿った方向への相対的な移動が規制される。なお、積層コア１１とカバー１３との間の相対的な移動には、中心軸ＡＸの軸回り方向への相対的な回転移動も含まれる。 The engagement pin 15 is provided for each pair of the insertion hole 11e and the insertion hole 13e facing each other. One end of the engaging pin 15 is inserted into the insertion hole 11 e of the laminated core 11, and the other end is inserted into the insertion hole 13 e of the cover 13. In a state where the engagement pin 15 is inserted into the insertion hole 11e and the insertion hole 13e, the laminated core 11 and the cover 13 are engaged via the engagement pin 15 in a direction parallel to the end surfaces 11a and 11b. Therefore, by providing the engagement pin 15, relative movement in the direction along the end surfaces 11 a and 11 b between the laminated core 11 and the cover 13 is restricted. The relative movement between the laminated core 11 and the cover 13 includes a relative rotational movement of the central axis AX around the axis.
　上記の電動機の固定子１０を製造する場合、まず、積層コア１１の端面１１ａ，１１ｂに、コイルエンド１２ａ，１２ｂを囲んだ状態でカバー１３を配置する。カバー１３を配置する際には、係合ピン１５の一方の端部を積層コア１１の挿入孔１１ｅに挿入し、他方の端部を挿入孔１３ｅに挿入する。これにより、係合ピン１５を介して、積層コア１１とカバー１３とが端面１１ａ，１１ｂに沿った方向に係合される。したがって、積層コア１１及びカバー１３は、端面１１ａ，１１ｂに沿った方向への相対的な移動が規制される。 When manufacturing the above-described stator 10 for an electric motor, first, the cover 13 is disposed on the end faces 11a and 11b of the laminated core 11 so as to surround the coil ends 12a and 12b. When the cover 13 is disposed, one end of the engagement pin 15 is inserted into the insertion hole 11e of the laminated core 11, and the other end is inserted into the insertion hole 13e. Thereby, the laminated core 11 and the cover 13 are engaged with each other in the direction along the end surfaces 11a and 11b via the engagement pin 15. Therefore, relative movement of the laminated core 11 and the cover 13 in the direction along the end surfaces 11a and 11b is restricted.
　次に、積層コア１１の内部に円筒部材又は円柱部材を挿入し、板状部材によって端面１１ｂ側のカバー１３の端面１３ｂを塞ぐ。この状態で、端面１１ａ側のカバー１３の内側に溶融した樹脂を流し込む。溶融した樹脂は、コイル１２を伝わって端面１１ｂ側に供給される。端面１１ａ上の空間及び端面１１ｂ上の空間に樹脂が充填された状態で溶融した樹脂を硬化させることにより、樹脂部１４が形成される。樹脂部１４を形成することにより、コイルエンド１２ａ，１２ｂが樹脂部１４で覆われる。また、積層コア１１とカバー１３とが接着されて固定される。 Next, a cylindrical member or a columnar member is inserted into the laminated core 11, and the end surface 13b of the cover 13 on the end surface 11b side is closed with a plate-like member. In this state, molten resin is poured into the inside of the cover 13 on the end face 11a side. The molten resin is supplied to the end surface 11b side through the coil 12. The resin portion 14 is formed by curing the molten resin in a state where the resin is filled in the space on the end surface 11a and the space on the end surface 11b. By forming the resin portion 14, the coil ends 12 a and 12 b are covered with the resin portion 14. Further, the laminated core 11 and the cover 13 are bonded and fixed.
　電動機を高出力化又は高トルク化する場合、電動機の固定子１０からの発熱量が大きくなる。実施の形態１のような積層コア１１にコイル１２が挿入された構成の電動機の固定子１０では、コイル１２からの発熱量が大きくなる。 When the motor is increased in output or torque, the amount of heat generated from the stator 10 of the motor increases. In the stator 10 of the electric motor in which the coil 12 is inserted into the laminated core 11 as in the first embodiment, the amount of heat generated from the coil 12 is large.
　これに対して、実施の形態１では、電動機の固定子１０が、コイルエンド１２ａ，１２ｂの外周を覆った状態で配置されているカバー１３を有し、コイルエンド１２ａ，１２ｂとカバー１３との間に樹脂部１４が充填された構成である。これにより、コイル１２で発生する熱がコイルエンド１２ａ，１２ｂから樹脂部１４及びカバー１３を介して効率的に外部に排出される。 On the other hand, in the first embodiment, the stator 10 of the electric motor has the cover 13 arranged in a state of covering the outer periphery of the coil ends 12a and 12b, and the coil ends 12a and 12b and the cover 13 are arranged. The resin portion 14 is filled in between. Thereby, the heat generated in the coil 12 is efficiently discharged to the outside from the coil ends 12 a and 12 b through the resin portion 14 and the cover 13.
　また、実施の形態１では、積層コア１１とカバー１３とを係合して端面１１ａ，１１ｂに沿った方向への積層コア１１とカバー１３との間の相対的な移動を規制する係合ピン１５が設けられるため、簡単な構成で、樹脂部１４を形成する際の積層コア１１とカバー１３との間の相対的な移動を抑制することができる。これにより、積層コア１１とカバー１３とを嵌め合わせる必要がなく、ねじ結合の必要もないため、生産性の低下を抑制することができる。 Further, in the first embodiment, the engagement pin that engages the laminated core 11 and the cover 13 to restrict the relative movement between the laminated core 11 and the cover 13 in the direction along the end surfaces 11a and 11b. 15 is provided, the relative movement between the laminated core 11 and the cover 13 when the resin portion 14 is formed can be suppressed with a simple configuration. Thereby, since it is not necessary to fit the laminated core 11 and the cover 13 and there is no need for screw connection, it is possible to suppress a decrease in productivity.
　以上のように、実施の形態１によれば、生産性の低下を抑制し、小型化を実現可能とし、コイル１２で発生した熱を効率的に排出することが可能な電動機の固定子１０が得られる。 As described above, according to the first embodiment, there is provided the stator 10 for an electric motor that can suppress a reduction in productivity, can be downsized, and can efficiently discharge the heat generated in the coil 12. can get.
　また、カバー１３が樹脂部１４よりも電気抵抗値の高い樹脂材料を用いて形成されるため、カバー１３においてコイルエンド１２ａ，１２ｂと外部との間を電気的に絶縁することができる。また、カバー１３が樹脂部１４よりも熱伝導率の高い樹脂材料を用いて形成されるため、コイル１２で発生した熱を効率的に排出することができる。 Further, since the cover 13 is formed using a resin material having an electric resistance higher than that of the resin portion 14, the coil ends 12 a and 12 b can be electrically insulated from the outside in the cover 13. Further, since the cover 13 is formed using a resin material having a higher thermal conductivity than the resin portion 14, the heat generated in the coil 12 can be efficiently discharged.
実施の形態２．　
　図４は、実施の形態２に係る電動機の固定子２０を示す断面図である。図５は、図４におけるＡ－Ａ線に沿った断面を示す図である。実施の形態２では、実施の形態１に係る電動機の固定子１０と同一の構成要素には同一の符号を付すこととし、説明を省略又は簡略化する。 Embodiment 2. FIG.
FIG. 4 is a cross-sectional view showing the stator 20 of the electric motor according to the second embodiment. FIG. 5 is a diagram showing a cross section taken along line AA in FIG. In the second embodiment, the same components as those of the stator 10 of the electric motor according to the first embodiment are denoted by the same reference numerals, and description thereof is omitted or simplified.
　図４に示すように、電動機の固定子２０は、積層コア２１と、積層コア２１に挿入されたコイル１２と、積層コア２１の端面２１ａ，２１ｂ上に配置されたカバー２３と、コイルエンド１２ａ，１２ｂとカバー２３との間に充填された樹脂部１４とを備えている。 As shown in FIG. 4, the stator 20 of the electric motor includes a laminated core 21, a coil 12 inserted into the laminated core 21, a cover 23 disposed on end surfaces 21 a and 21 b of the laminated core 21, and a coil end 12 a. , 12b and the cover 23, the resin portion 14 is provided.
　積層コア２１は、帯状に打ち抜かれた電磁鋼板２１ｇが複数積層され、固定部であるカシメ板２５によって接合された構成となっている。電磁鋼板２１ｇには、係合部であるカシメ板２５を嵌め込むための切り欠き部２１ｅが形成される。切り欠き部２１ｅは、中心軸ＡＸの軸回り方向に複数形成される。複数の電磁鋼板２１ｇは、切り欠き部２１ｅの位置を揃えた状態で積層される。このため、積層コア２１には、各電磁鋼板２１ｇの切り欠き部２１ｅにより、中心軸ＡＸの軸線方向に沿った溝部２１ｆが形成される。 The laminated core 21 has a configuration in which a plurality of electromagnetic steel plates 21g punched in a strip shape are laminated and joined by a caulking plate 25 which is a fixed portion. The electromagnetic steel plate 21g is formed with a notch 21e for fitting the crimping plate 25 as an engaging portion. A plurality of notches 21e are formed around the central axis AX. The plurality of electromagnetic steel plates 21g are stacked in a state where the positions of the notches 21e are aligned. For this reason, the laminated core 21 is formed with a groove 21f along the axial direction of the central axis AX by the notch 21e of each electromagnetic steel plate 21g.
　カシメ板２５は、図５に示すカシメ工具２６により、積層コア２１の外周から溝部２１ｆに押し込まれる。カシメ板２５は、積層コア２１の端面２１ａ及び端面２１ｂから中心軸ＡＸの軸線方向に突出して配置される。 The crimping plate 25 is pushed into the groove 21f from the outer periphery of the laminated core 21 by a crimping tool 26 shown in FIG. The caulking plate 25 is disposed so as to protrude from the end surface 21 a and the end surface 21 b of the laminated core 21 in the axial direction of the central axis AX.
　カバー２３には、突出部２５ａ，２５ｂに対応した形状の切り欠き部２３ｅが形成される。突出部２５ａ，２５ｂは、カバー２３が積層コア２１の端面２１ａ，２１ｂ上に配置された状態で、切り欠き部２３ｅに嵌め込まれる。突出部２５ａ，２５ｂが切り欠き部２３ｅに嵌め込まれることにより、積層コア２１とカバー２３とが突出部２５ａ，２５ｂを介して係合される。これにより、積層コア２１とカバー２３との間の端面２１ａ，２１ｂに沿った方向への相対的な移動が規制される。なお、積層コア２１とカバー２３との間の相対的な移動には、中心軸ＡＸの軸回り方向への相対的な回転移動も含まれる。 The cover 23 is formed with a notch 23e having a shape corresponding to the protrusions 25a and 25b. The protrusions 25a and 25b are fitted into the notches 23e in a state where the cover 23 is disposed on the end faces 21a and 21b of the laminated core 21. By fitting the protrusions 25a and 25b into the notch 23e, the laminated core 21 and the cover 23 are engaged via the protrusions 25a and 25b. Thereby, the relative movement in the direction along the end surfaces 21a and 21b between the laminated core 21 and the cover 23 is restricted. Note that the relative movement between the laminated core 21 and the cover 23 includes a relative rotational movement of the central axis AX around the axis.
　本実施の形態２に係る電動機の固定子２０では、複数の電磁鋼板２１ｇを固定するカシメ板２５が積層コア２１の端面２１ａ，２１ｂから突出し、突出部２５ａ，２５ｂがカバー２３に係合するため、電磁鋼板２１ｇの設計変更を行うことなく、積層コア２１とカバー２３との間の相対的な移動を抑制することができる。 In the stator 20 of the electric motor according to the second embodiment, the caulking plate 25 that fixes the plurality of electromagnetic steel plates 21 g protrudes from the end surfaces 21 a and 21 b of the laminated core 21, and the protruding portions 25 a and 25 b engage with the cover 23. The relative movement between the laminated core 21 and the cover 23 can be suppressed without changing the design of the electromagnetic steel sheet 21g.
実施の形態３．　
　図６は、実施の形態３に係る電動機の固定子３０を示す図である。実施の形態３では、実施の形態１に係る電動機の固定子１０と同一の構成要素には同一の符号を付すこととし、説明を省略又は簡略化する。実施の形態３では、カシメ板２５に代えて、係合部である貫通ピン３５を用いて電磁鋼板が固定された構成を例に挙げて説明する。 Embodiment 3 FIG.
FIG. 6 is a diagram illustrating a stator 30 of the electric motor according to the third embodiment. In the third embodiment, the same components as those of the stator 10 of the electric motor according to the first embodiment are denoted by the same reference numerals, and description thereof is omitted or simplified. In the third embodiment, a configuration in which an electromagnetic steel plate is fixed using a through pin 35 that is an engaging portion instead of the crimping plate 25 will be described as an example.
　図６に示すように、電動機の固定子３０は、貫通孔３１ｆが形成された積層コア３１と、積層コア３１に挿入されたコイル１２と、積層コア３１の端面３１ａ，３１ｂ上に配置されたカバー１３と、コイルエンド１２ａ，１２ｂとカバー１３との間に充填された樹脂部１４とを備えている。 As shown in FIG. 6, the stator 30 of the electric motor is disposed on the laminated core 31 in which the through hole 31 f is formed, the coil 12 inserted into the laminated core 31, and the end faces 31 a and 31 b of the laminated core 31. A cover 13 and a resin portion 14 filled between the coil ends 12a and 12b and the cover 13 are provided.
　積層コア３１は、帯状に打ち抜かれた電磁鋼板３１ｇが複数積層され、固定部である貫通ピン３５によって接合された構成となっている。電磁鋼板３１ｇには、貫通ピン３５を挿入するための挿入孔３１ｅが形成される。挿入孔３１ｅは、中心軸ＡＸの軸回り方向に複数形成される。複数の電磁鋼板３１ｇは、挿入孔３１ｅの位置を揃えた状態で積層される。このため、積層コア３１には、各電磁鋼板３１ｇの挿入孔３１ｅにより、中心軸ＡＸの軸線方向に沿った貫通孔３１ｆが形成される。 The laminated core 31 has a configuration in which a plurality of electromagnetic steel plates 31g punched in a strip shape are laminated and joined by through pins 35 which are fixed portions. An insertion hole 31e for inserting the through pin 35 is formed in the electromagnetic steel plate 31g. A plurality of insertion holes 31e are formed in the direction around the central axis AX. The plurality of electromagnetic steel plates 31g are stacked in a state where the positions of the insertion holes 31e are aligned. For this reason, the laminated core 31 is formed with a through hole 31f along the axial direction of the central axis AX by the insertion hole 31e of each electromagnetic steel plate 31g.
　貫通ピン３５は、積層コア３１の高さ（中心軸ＡＸの軸線方向での端面３１ａと端面３１ｂとの距離）よりも長く形成される。貫通ピン３５は、積層コア３１の端面３１ａ及び端面３１ｂから中心軸ＡＸの軸線方向に突出して貫通孔３１ｆに挿入される。 The penetrating pin 35 is formed longer than the height of the laminated core 31 (the distance between the end surface 31a and the end surface 31b in the axial direction of the central axis AX). The through pin 35 protrudes from the end surface 31a and the end surface 31b of the laminated core 31 in the axial direction of the central axis AX and is inserted into the through hole 31f.
　カバー１３の端面１３ａには、貫通ピン３５を挿入するための挿入孔１３ｅが形成される。突出部３５ａ，３５ｂは、カバー１３が積層コア３１の端面３１ａ，３１ｂ上に配置された状態で、挿入孔１３ｅに挿入される。突出部３５ａ，３５ｂが挿入孔１３ｅに挿入されることにより、積層コア３１とカバー１３とが突出部３５ａ，３５ｂを介して係合される。これにより、積層コア３１とカバー１３との間の端面３１ａ，３１ｂに沿った方向への相対的な移動が規制される。なお、積層コア３１とカバー１３との間の相対的な移動には、中心軸ＡＸの軸回り方向への相対的な回転移動も含まれる。 An insertion hole 13e for inserting the through pin 35 is formed in the end surface 13a of the cover 13. The protruding portions 35 a and 35 b are inserted into the insertion holes 13 e in a state where the cover 13 is disposed on the end surfaces 31 a and 31 b of the laminated core 31. By inserting the protruding portions 35a and 35b into the insertion hole 13e, the laminated core 31 and the cover 13 are engaged via the protruding portions 35a and 35b. Thereby, the relative movement in the direction along the end surfaces 31a and 31b between the laminated core 31 and the cover 13 is restricted. The relative movement between the laminated core 31 and the cover 13 includes a relative rotational movement of the central axis AX around the axis.
　本実施の形態３に係る電動機の固定子３０では、複数の電磁鋼板３１ｇを固定する貫通ピン３５が積層コア３１の端面３１ａ，３１ｂから突出し、突出部３５ａ，３５ｂがカバー１３に係合されるため、電磁鋼板３１ｇの設計変更を行うことなく、積層コア３１とカバー１３との間の相対的な移動を抑制することができる。 In the stator 30 of the electric motor according to the third embodiment, the through pin 35 that fixes the plurality of electromagnetic steel plates 31 g protrudes from the end surfaces 31 a and 31 b of the laminated core 31, and the protruding portions 35 a and 35 b are engaged with the cover 13. Therefore, the relative movement between the laminated core 31 and the cover 13 can be suppressed without changing the design of the electromagnetic steel sheet 31g.
実施の形態４．　
　図７は、実施の形態４に係る電動機の固定子４０を示す図である。実施の形態４では、実施の形態１に係る電動機の固定子１０と同一の構成要素には同一の符号を付すこととし、説明を省略又は簡略化する。実施の形態４では、積層コアの端面に係合部が設けられた構成を例に挙げて説明する。 Embodiment 4 FIG.
FIG. 7 is a diagram illustrating a stator 40 of the electric motor according to the fourth embodiment. In the fourth embodiment, the same components as those of the stator 10 of the electric motor according to the first embodiment are denoted by the same reference numerals, and description thereof is omitted or simplified. In the fourth embodiment, a configuration in which an engaging portion is provided on an end surface of a laminated core will be described as an example.
　図７に示すように、電動機の固定子４０は、係合部である突起部４５を有する積層コア４１と、積層コア４１に挿入されたコイル１２と、積層コア４１の端面４１ａ，４１ｂ上に配置されたカバー１３と、コイルエンド１２ａ，１２ｂとカバー１３との間に充填された樹脂部１４とを備えている。 As shown in FIG. 7, the stator 40 of the electric motor is formed on the laminated core 41 having the protrusion 45 that is the engaging portion, the coil 12 inserted into the laminated core 41, and the end faces 41 a and 41 b of the laminated core 41. The cover 13 is disposed, and the resin portion 14 filled between the coil ends 12a and 12b and the cover 13 is provided.
　積層コア４１は、帯状に打ち抜かれた電磁鋼板４１ｇが複数積層され、かしめ、溶接、又は接着で固定された構成となっている。積層コア４１の端面４１ａ，４１ｂには、突起部４５が形成される。なお、積層コア４１の端面４１ａ，４１ｂから突出した部分が既存の構成で設けられる場合、当該既存の突出部分が突起部４５であってもよい。突起部４５は、中心軸ＡＸの軸回り方向に複数配置される。 The laminated core 41 has a configuration in which a plurality of electromagnetic steel plates 41g punched in a strip shape are laminated and fixed by caulking, welding, or adhesion. Projections 45 are formed on the end surfaces 41 a and 41 b of the laminated core 41. In addition, when the part which protruded from the end surfaces 41a and 41b of the lamination | stacking core 41 is provided by the existing structure, the said existing protrusion part may be the projection part 45. FIG. A plurality of the protrusions 45 are arranged in the direction around the central axis AX.
　カバー１３の端面１３ａには、突起部４５を挿入するための挿入孔１３ｅが形成される。挿入孔１３ｅは、突起部４５に対向する位置に設けられる。突起部４５は、カバー１３が積層コア４１の端面４１ａ，４１ｂ上に配置された状態で、挿入孔１３ｅに挿入される。突起部４５が挿入孔１３ｅに挿入されることにより、積層コア４１とカバー１３とが突起部４５を介して係合される。これにより、積層コア４１とカバー１３との間の端面４１ａ，４１ｂに沿った方向への相対的な移動が規制される。なお、積層コア４１とカバー１３との間の相対的な移動には、中心軸ＡＸの軸回り方向への相対的な回転移動も含まれる。 An insertion hole 13e for inserting the protrusion 45 is formed in the end surface 13a of the cover 13. The insertion hole 13e is provided at a position facing the protrusion 45. The protruding portion 45 is inserted into the insertion hole 13 e in a state where the cover 13 is disposed on the end faces 41 a and 41 b of the laminated core 41. By inserting the protrusion 45 into the insertion hole 13 e, the laminated core 41 and the cover 13 are engaged via the protrusion 45. Thereby, the relative movement in the direction along the end surfaces 41a and 41b between the laminated core 41 and the cover 13 is restricted. The relative movement between the laminated core 41 and the cover 13 includes a relative rotational movement of the central axis AX around the axis.
　本実施の形態４に係る電動機の固定子４０では、積層コア４１の端面４１ａ，４１ｂに係合部である突起部４５が設けられるため、実施の形態１よりも、積層コア４１とカバー１３とを係合させるための部品点数を少なくすることができる。これにより、更なる生産性の向上を図ることができる。 In the stator 40 of the electric motor according to the fourth embodiment, the protrusions 45 that are the engaging portions are provided on the end faces 41a and 41b of the laminated core 41, so that the laminated core 41 and the cover 13 are better than the first embodiment. The number of parts for engaging can be reduced. Thereby, the further improvement of productivity can be aimed at.
実施の形態５．　
　図８は、実施の形態５に係る電動機の固定子５０を示す図である。実施の形態５では、実施の形態１に係る電動機の固定子１０と同一の構成要素には同一の符号を付すこととし、説明を省略又は簡略化する。実施の形態５では、カバー側に係合部が設けられた構成を例に挙げて説明する。 Embodiment 5 FIG.
FIG. 8 shows a stator 50 of the electric motor according to the fifth embodiment. In the fifth embodiment, the same components as those of the stator 10 of the electric motor according to the first embodiment are denoted by the same reference numerals, and description thereof is omitted or simplified. In the fifth embodiment, a configuration in which an engagement portion is provided on the cover side will be described as an example.
　図８に示すように、電動機の固定子５０は、積層コア１１と、積層コア１１に挿入されたコイル１２と、積層コア１１の端面１１ａ，１１ｂ上に配置されたカバー５３と、コイルエンド１２ａ，１２ｂとカバー５３との間に充填された樹脂部１４とを備えている。 As shown in FIG. 8, the stator 50 of the motor includes a laminated core 11, a coil 12 inserted into the laminated core 11, a cover 53 disposed on the end faces 11a and 11b of the laminated core 11, and a coil end 12a. , 12b and the cover 53, the resin portion 14 is provided.
　カバー５３は、中心軸ＡＸの軸線方向の両端に形成された端面５３ａ，５３ｂと、中心軸ＡＸの軸回り方向に沿って形成された内周面５３ｃ及び外周面５３ｄと、を有している。端面５３ａには、係合部である突起部５５が設けられている。突起部５５は、積層コア１１側に突出している。突起部５５は、積層コア１１の挿入孔１１ｅに対向する位置に設けられる。 The cover 53 has end surfaces 53a and 53b formed at both ends in the axial direction of the central axis AX, and an inner peripheral surface 53c and an outer peripheral surface 53d formed along the direction around the central axis AX. . The end surface 53a is provided with a protrusion 55 that is an engaging portion. The protrusion 55 protrudes toward the laminated core 11 side. The protrusion 55 is provided at a position facing the insertion hole 11 e of the laminated core 11.
　突起部５５は、カバー５３が積層コア１１の端面１１ａ，１１ｂ上に配置された状態で、挿入孔１１ｅに挿入される。突起部５５が挿入孔１１ｅに挿入されることにより、積層コア１１とカバー５３とが突起部５５を介して係合される。これにより、積層コア１１とカバー５３との間の端面１１ａ，１１ｂに沿った方向への相対的な移動が規制される。なお、積層コア１１とカバー５３との間の相対的な移動には、中心軸ＡＸの軸回り方向への相対的な回転移動も含まれる。 The protruding portion 55 is inserted into the insertion hole 11e in a state where the cover 53 is disposed on the end faces 11a and 11b of the laminated core 11. By inserting the protrusion 55 into the insertion hole 11 e, the laminated core 11 and the cover 53 are engaged via the protrusion 55. Thereby, the relative movement in the direction along the end surfaces 11a and 11b between the laminated core 11 and the cover 53 is restricted. Note that the relative movement between the laminated core 11 and the cover 53 includes a relative rotational movement of the central axis AX around the axis.
　本実施の形態５に係る電動機の固定子５０では、カバー５３の端面５３ａに係合部である突起部５５が設けられるため、実施の形態１よりも、積層コア１１とカバー５３とを係合させるための部品点数を少なくすることができる。これにより、更なる生産性の向上を図ることができる。 In the stator 50 of the electric motor according to the fifth embodiment, the protrusion 55 that is the engaging portion is provided on the end surface 53a of the cover 53, so that the laminated core 11 and the cover 53 are engaged compared to the first embodiment. It is possible to reduce the number of parts for making them. Thereby, the further improvement of productivity can be aimed at.
実施の形態６．　
　図９から図２０は、実施の形態６に係るカバーの構成及び電動機の固定子の構成を示す図である。実施の形態６では、実施の形態１に係る電動機の固定子１０と同一の構成要素には同一の符号を付すこととし、説明を省略又は簡略化する。実施の形態６では、カバーの内周面の構成についての変形例を説明する。 Embodiment 6 FIG.
FIGS. 9 to 20 are diagrams showing the configuration of the cover and the configuration of the stator of the electric motor according to the sixth embodiment. In the sixth embodiment, the same components as those of the stator 10 of the electric motor according to the first embodiment are denoted by the same reference numerals, and description thereof is omitted or simplified. In the sixth embodiment, a modification of the configuration of the inner peripheral surface of the cover will be described.
　図９に示すカバー６３は、内周面６３ｃに凹部である溝部６３ｅを有している。溝部６３ｅは、内周面６３ｃの一周に亘って環状に形成される。図１０に示す電動機の固定子６０Ａには、カバー６３が用いられている。電動機の固定子６０Ａでは、樹脂部１４の突出部１４ｅが外周面１４ｄから外側に突出し、突出部１４ｅが溝部６３ｅの内部に充填されている。これにより、カバー６３が中心軸ＡＸの軸線方向に外れることを抑制することができる。 The cover 63 shown in FIG. 9 has a groove 63e that is a recess in the inner peripheral surface 63c. The groove 63e is formed in an annular shape over the entire circumference of the inner peripheral surface 63c. A cover 63 is used for the stator 60A of the electric motor shown in FIG. In the stator 60A of the electric motor, the protruding portion 14e of the resin portion 14 protrudes outward from the outer peripheral surface 14d, and the protruding portion 14e is filled in the groove portion 63e. Thereby, it can suppress that the cover 63 remove | deviates from the axial direction of central axis AX.
　図１１に示すカバー６４は、内周面６４ｃに凹部である窪み部６４ｅを有している。窪み部６４ｅは、中心軸ＡＸの軸回り方向に複数形成されている。図１２に示す電動機の固定子６０Ｂには、カバー６４が用いられている。電動機の固定子６０Ｂでは、樹脂部１４の突出部１４ｅが外周面１４ｄから外側に突出し、窪み部６４ｅの内部に充填されている。これにより、カバー６４が中心軸ＡＸの軸線方向に外れることを抑制することができる。 The cover 64 shown in FIG. 11 has a recess 64e which is a recess on the inner peripheral surface 64c. A plurality of depressions 64e are formed in the direction around the central axis AX. A cover 64 is used for the stator 60B of the electric motor shown in FIG. In the stator 60B of the electric motor, the protruding portion 14e of the resin portion 14 protrudes outward from the outer peripheral surface 14d and is filled in the hollow portion 64e. Thereby, it can suppress that the cover 64 remove | deviates from the axial direction of central axis AX.
　図１３に示すカバー６５は、内周面６５ｃに凹部である貫通孔６５ｅを有している。貫通孔６５ｅは、内周面６５ｃと外周面６５ｄとを貫通する。貫通孔６５ｅは、中心軸ＡＸの軸回り方向に複数形成されている。図１４に示す電動機の固定子６０Ｃには、カバー６５が用いられている。電動機の固定子６０Ｃでは、樹脂部１４の突出部１４ｅが外周面１４ｄから外側に突出し、貫通孔６５ｅの内部に充填されている。これにより、カバー６５が中心軸ＡＸの軸線方向に外れることを抑制することができる。 The cover 65 shown in FIG. 13 has a through hole 65e which is a recess in the inner peripheral surface 65c. The through hole 65e penetrates the inner peripheral surface 65c and the outer peripheral surface 65d. A plurality of through holes 65e are formed in the direction around the central axis AX. A cover 65 is used for the stator 60C of the electric motor shown in FIG. In the stator 60C of the electric motor, the protruding portion 14e of the resin portion 14 protrudes outward from the outer peripheral surface 14d and is filled in the through hole 65e. Thereby, it can suppress that the cover 65 remove | deviates from the axial direction of central axis AX.
　なお、図９から図１４に示すカバー６３，６４，６５については、凹部に代えて、又は凹部と共に、凸部が内周面６３ｃ，６４ｃ，６５ｃに設けられた構成であってもよい。この場合であっても、カバー６３，６４，６５が中心軸ＡＸの軸線方向に外れることを抑制することができる。 Note that the covers 63, 64, and 65 shown in FIGS. 9 to 14 may have a configuration in which convex portions are provided on the inner peripheral surfaces 63c, 64c, and 65c instead of the concave portions or together with the concave portions. Even in this case, it is possible to prevent the covers 63, 64, 65 from coming off in the axial direction of the central axis AX.
　図１５に示すカバー６６は、内周面６６ｃに縮径部であるテーパ部６６ｅを有している。テーパ部６６ｅは、カバー６６の端面６６ｂから端面６６ａに向けて内周面６６ｃの径が小さく形成される。図１５では、テーパ部６６ｅが中心軸ＡＸの軸線方向について内周面６６ｃの全体に亘って形成された構成を例に挙げて説明しているが、これに限定するものではなく、軸線方向について内周面６６ｃの一部にテーパ部６６ｅが形成された構成であってもよい。図１６に示す電動機の固定子６０Ｄには、カバー６６が用いられている。電動機の固定子６０Ｄでは、樹脂部１４の外周面１４ｄがテーパ部６６ｅに沿って形成されている。したがって、樹脂部１４の外周面１４ｄは、端面１４ａから端面１４ｂに向けて径が大きく形成される。これにより、カバー６６が中心軸ＡＸの軸線方向に外れることを抑制することができる。 15 has a tapered portion 66e which is a reduced diameter portion on the inner peripheral surface 66c. The tapered portion 66e is formed such that the diameter of the inner peripheral surface 66c decreases from the end surface 66b of the cover 66 toward the end surface 66a. In FIG. 15, the configuration in which the tapered portion 66e is formed over the entire inner peripheral surface 66c in the axial direction of the central axis AX is described as an example. However, the configuration is not limited thereto, and the axial direction is not limited thereto. The taper part 66e may be formed in a part of the inner peripheral surface 66c. A cover 66 is used for the stator 60D of the electric motor shown in FIG. In the stator 60D of the electric motor, the outer peripheral surface 14d of the resin portion 14 is formed along the tapered portion 66e. Therefore, the outer peripheral surface 14d of the resin portion 14 is formed to have a larger diameter from the end surface 14a toward the end surface 14b. Thereby, it can suppress that the cover 66 remove | deviates from the axial direction of center axis AX.
　図１７に示すカバー６７は、内周面６７ｃに縮径部である段部６７ｅを有している。段部６７ｅは、内周面６７ｃのうち端面６７ａ側の径が端面６７ｂの径よりも小さく形成される。図１７では、段部６７ｅが中心軸ＡＸの軸線方向について２段に形成された構成を例に挙げて説明しているが、これに限定するものではなく、３段以上形成されてもよい。図１８に示す電動機の固定子６０Ｅには、カバー６７が用いられている。電動機の固定子６０Ｅでは、樹脂部１４の外周面１４ｄが段部６７ｅに沿って形成されている。したがって、樹脂部１４の外周面１４ｄは、端面１４ａ側の径よりも端面１４ｂの径の方が大きく形成される。これにより、カバー６７が中心軸ＡＸの軸線方向に外れることを抑制することができる。 The cover 67 shown in FIG. 17 has a stepped portion 67e which is a reduced diameter portion on the inner peripheral surface 67c. The stepped portion 67e is formed such that the diameter on the end surface 67a side of the inner peripheral surface 67c is smaller than the diameter of the end surface 67b. In FIG. 17, the configuration in which the stepped portion 67e is formed in two steps in the axial direction of the central axis AX is described as an example. However, the configuration is not limited to this, and may be formed in three or more steps. A cover 67 is used for the stator 60E of the electric motor shown in FIG. In the stator 60E of the electric motor, the outer peripheral surface 14d of the resin portion 14 is formed along the stepped portion 67e. Therefore, the outer peripheral surface 14d of the resin portion 14 is formed such that the diameter of the end surface 14b is larger than the diameter on the end surface 14a side. Thereby, it can suppress that the cover 67 remove | deviates in the axial direction of central axis AX.
　図１９に示すカバー６８は、内周面６８ｃに絶縁層６８ｅを有している。絶縁層６８ｅは、絶縁テープ又は絶縁被膜が用いられる。絶縁層６８ｅは、内周面６８ｃの全面に亘って形成されている。なお、絶縁層６８ｅが内周面６８ｃの一部に形成された構成であってもよい。図２０に示す電動機の固定子６０Ｆには、カバー６８が用いられている。電動機の固定子６０Ｆでは、カバー６８とコイルエンド１２ａ，１２ｂとの間で容易に絶縁状態を維持することが可能となる。これにより、カバー６８の取り付けの作業性が向上する。 19 has an insulating layer 68e on the inner peripheral surface 68c. As the insulating layer 68e, an insulating tape or an insulating film is used. The insulating layer 68e is formed over the entire inner peripheral surface 68c. The insulating layer 68e may be formed on a part of the inner peripheral surface 68c. A cover 68 is used for the stator 60F of the electric motor shown in FIG. In the stator 60F of the electric motor, it is possible to easily maintain an insulating state between the cover 68 and the coil ends 12a and 12b. Thereby, the workability of attaching the cover 68 is improved.
実施の形態７．　
　図２１は、実施の形態７に係る電動機７０の一例を示す断面図である。図２１に示すように、実施の形態７に係る電動機７０は、固定子７１と、固定子７１の内側に配置された回転子７２と、回転子７２のシャフト７３に組付けられた軸受け７４と、固定子７１に圧入されるブラケット７５とを備えている。図２１に示す固定子７１は、実施の形態１に記載の電動機の固定子１０を例に挙げているが、これに限定するものではなく、実施の形態２から実施の形態６に記載したいずれかの電動機の固定子が用いられてもよい。 Embodiment 7 FIG.
FIG. 21 is a cross-sectional view showing an example of an electric motor 70 according to the seventh embodiment. As shown in FIG. 21, an electric motor 70 according to the seventh embodiment includes a stator 71, a rotor 72 disposed inside the stator 71, and a bearing 74 assembled to a shaft 73 of the rotor 72. The bracket 75 is press-fitted into the stator 71. The stator 71 shown in FIG. 21 is exemplified by the stator 10 of the electric motor described in the first embodiment, but is not limited to this, and any of the stators described in the second to sixth embodiments. A stator of such an electric motor may be used.
　実施の形態７に係る電動機７０は、固定子７１のコイル１２で発生した熱は、コイルエンド１２ａ，１２ｂから樹脂部１４及びカバー１３を介してブラケット７５の底面部７５ａ，７５ｂ及び側面部７５ｃに伝達されて外部に排出される。これにより、コイル１２で発生した熱を効率的に排出することができる。 In the electric motor 70 according to the seventh embodiment, heat generated in the coil 12 of the stator 71 is transferred from the coil ends 12a and 12b to the bottom surface portions 75a and 75b and the side surface portion 75c of the bracket 75 via the resin portion 14 and the cover 13. It is transmitted and discharged to the outside. Thereby, the heat generated in the coil 12 can be efficiently discharged.
　以上の実施の形態に示した構成は、本発明の内容の一例を示すものであり、別の公知の技術と組み合わせることも可能であるし、本発明の要旨を逸脱しない範囲で、構成の一部を省略、変更することも可能である。 The configuration described in the above embodiment shows an example of the contents of the present invention, and can be combined with another known technique, and can be combined with other configurations without departing from the gist of the present invention. It is also possible to omit or change the part.
　１０，２０，３０，４０，５０，６０Ａ，６０Ｂ，６０Ｃ，６０Ｄ，６０Ｅ，６０Ｆ　電動機の固定子、１１，２１，３１，４１　積層コア、ＡＸ　中心軸、１１ａ，１１ｂ，２１ａ，２１ｂ，３１ａ，３１ｂ，４１ａ，４１ｂ　端面、１２　コイル、１２ａ，１２ｂ　コイルエンド、１３，２３，５３，６３，６４，６５，６６，６７，６８　カバー、１４　樹脂部、１５　係合ピン、２５　カシメ板、３５　貫通ピン、４５，５５　突起部、７０　電動機、７１　固定子、７２　回転子、７５　ブラケット。 10, 20, 30, 40, 50, 60A, 60B, 60C, 60D, 60E, 60F Motor stator, 11, 21, 31, 41 laminated core, AX central axis, 11a, 11b, 21a, 21b, 31a, 31b, 41a, 41b end face, 12 coil, 12a, 12b coil end, 13, 23, 53, 63, 64, 65, 66, 67, 68 cover, 14 resin part, 15 engagement pin, 25 crimping plate, 35 penetration Pin, 45, 55 protrusion, 70 electric motor, 71 stator, 72 rotor, 75 bracket.

Claims (10)

  1. 　電動機の固定子において、
    　複数のコア部材が積層された積層コアと、
    　前記積層コアのうち中心軸の軸線方向の端面からコイルエンドが突出した状態で前記積層コアに挿入されたコイルと、
    　筒状に形成され、前記コイルエンドを囲い前記端面に当接して配置されたカバーと、
    　前記コイルエンドと前記カバーとの間に充填され、前記カバーと前記端面とを固定する樹脂部と、
    　前記端面と前記カバーとの当接部分に設けられ、前記端面に沿った方向への前記積層コアと前記カバーとの間の相対的な移動を規制する係合部と
    　を備えることを特徴とする電動機の固定子。     In the stator of the motor,
    A laminated core in which a plurality of core members are laminated;
    A coil inserted into the laminated core in a state where a coil end protrudes from an end face in the axial direction of the central axis of the laminated core;
    A cover formed in a cylindrical shape and surrounding the coil end and disposed in contact with the end surface;
    A resin portion filled between the coil end and the cover and fixing the cover and the end surface;
    An engagement portion is provided at a contact portion between the end surface and the cover, and restricts relative movement between the laminated core and the cover in a direction along the end surface. Electric motor stator.
  2. 　前記係合部は、一端が前記端面から前記積層コアに挿入され他端が前記カバーに挿入される係合ピンを有する
    　ことを特徴とする請求項１に記載の電動機の固定子。     2. The electric motor stator according to claim 1, wherein the engagement portion includes an engagement pin having one end inserted into the laminated core from the end surface and the other end inserted into the cover.
  3. 　前記積層コアを一方向に貫通し、複数の前記コア部材を固定する固定部を備え、
    　前記固定部は、前記端面から突出して設けられ、
    　前記係合部は、前記固定部のうち前記端面から突出した部分を含む
    　ことを特徴とする請求項１又は請求項２に記載の電動機の固定子。     It includes a fixing portion that penetrates the laminated core in one direction and fixes the plurality of core members,
    The fixing portion is provided to protrude from the end surface,
    The stator of the electric motor according to claim 1, wherein the engaging portion includes a portion of the fixing portion that protrudes from the end surface.
  4. 　前記カバーは、内周面に凹部を有し、
    　前記樹脂部の一部は、前記凹部に充填される
    　ことを特徴とする請求項１から請求項３のうちいずれか一項に記載の電動機の固定子。     The cover has a recess on the inner peripheral surface,
    The motor stator according to any one of claims 1 to 3, wherein a part of the resin portion is filled in the recess.
  5. 　前記凹部は、溝状に形成される
    　ことを特徴とする請求項４に記載の電動機の固定子。     The stator of an electric motor according to claim 4, wherein the recess is formed in a groove shape.
  6. 　前記カバーは、内周側と外周側とを貫通する貫通孔を有し、
    　前記樹脂部の一部は、前記貫通孔に充填される
    　ことを特徴とする請求項１から請求項５のうちいずれか一項に記載の電動機の固定子。     The cover has a through hole penetrating the inner peripheral side and the outer peripheral side,
    The stator of the electric motor according to any one of claims 1 to 5, wherein a part of the resin portion is filled in the through hole.
  7. 　前記カバーは、内周面に縮径部を有し、
    　前記縮径部は、前記積層コア側に向けて前記内周面の径が小さく形成される
    　ことを特徴とする請求項１から請求項６のうちいずれか一項に記載の電動機の固定子。     The cover has a reduced diameter portion on the inner peripheral surface,
    The stator of an electric motor according to any one of claims 1 to 6, wherein the diameter-reduced portion is formed such that a diameter of the inner peripheral surface is reduced toward the laminated core side.
  8. 　前記カバーは、内周面に絶縁層を有する
    　ことを特徴とする請求項１から請求項７のうちいずれか一項に記載の電動機の固定子。     The stator for an electric motor according to any one of claims 1 to 7, wherein the cover has an insulating layer on an inner peripheral surface.
  9. 　前記カバーは、前記樹脂部よりも電気抵抗値及び熱伝導率が高い樹脂材料を用いて形成される
    　ことを特徴とする請求項１から請求項８のうちいずれか一項に記載の電動機の固定子。     The electric motor fixing according to any one of claims 1 to 8, wherein the cover is formed using a resin material having a higher electric resistance value and thermal conductivity than the resin portion. Child.
  10. 　請求項１から請求項９のうちいずれか一項に記載の電動機の固定子を備えたことを特徴とする電動機。 An electric motor comprising the stator of the electric motor according to any one of claims 1 to 9.
PCT/JP2015/050672 2015-01-13 2015-01-13 Electric motor stator and electric motor WO2016113846A1 (en)

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PCT/JP2015/050672 WO2016113846A1 (en) 2015-01-13 2015-01-13 Electric motor stator and electric motor
JP2015532641A JP5897221B1 (en) 2015-01-13 2015-01-13 Electric motor stator and electric motor
CN201580073189.XA CN107210639A (en) 2015-01-13 2015-01-13 The stator and motor of motor
KR1020177018321A KR20170084336A (en) 2015-01-13 2015-01-13 Electric motor stator and electric motor
TW104120291A TWI568143B (en) 2015-01-13 2015-06-24 Stator of motor and motor

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* Cited by examiner, † Cited by third party
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CN109038907A (en) * 2017-06-12 2018-12-18 发那科株式会社 Motor and its manufacturing method
CN111052556A (en) * 2017-09-19 2020-04-21 日本精工株式会社 Electric motor
JP2020120543A (en) * 2019-01-25 2020-08-06 ファナック株式会社 Electric motor with improved heat dissipation and productivity and method of manufacturing the same
JP2021118588A (en) * 2020-01-23 2021-08-10 ファナック株式会社 Stator of electric motor having cylindrical member arranged outside of stator core
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JP2021118588A (en) * 2020-01-23 2021-08-10 ファナック株式会社 Stator of electric motor having cylindrical member arranged outside of stator core
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JP2021164352A (en) * 2020-04-02 2021-10-11 ファナック株式会社 Stator and dynamo-electric motor
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KR20170084336A (en) 2017-07-19
TWI568143B (en) 2017-01-21

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