WO2019123513A1 - Stator core and motor equipped with said stator core - Google Patents

Stator core and motor equipped with said stator core Download PDF

Info

Publication number
WO2019123513A1
WO2019123513A1 PCT/JP2017/045310 JP2017045310W WO2019123513A1 WO 2019123513 A1 WO2019123513 A1 WO 2019123513A1 JP 2017045310 W JP2017045310 W JP 2017045310W WO 2019123513 A1 WO2019123513 A1 WO 2019123513A1
Authority
WO
WIPO (PCT)
Prior art keywords
electromagnetic steel
stator core
crimped
joint
stacking direction
Prior art date
Application number
PCT/JP2017/045310
Other languages
French (fr)
Japanese (ja)
Inventor
雄康 平戸
裕史 庄子
剛仙 岩邊
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/JP2017/045310 priority Critical patent/WO2019123513A1/en
Priority to JP2019559878A priority patent/JP6727458B2/en
Priority to CN201780096571.1A priority patent/CN111448741A/en
Publication of WO2019123513A1 publication Critical patent/WO2019123513A1/en

Links

Images

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
    • H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures

Definitions

  • the present invention relates to a stator core formed by laminating a plurality of electromagnetic steel sheets and a motor including the stator core.
  • a stator core is known as one that constitutes a stator used, for example, in a motor.
  • the stator core is formed by laminating a plurality of electromagnetic steel plates, and includes an annular core back portion and a plurality of teeth portions extending inward from the core back portion. An insulation process is applied to the teeth portion and the winding is wound.
  • the stator core has a configuration in which electromagnetic steel plates adjacent in the stacking direction are caulked and joined at the core back portion and the teeth portion.
  • the magnetic permeability is lowered or the insulating layer is broken due to the influence of the strain due to the press fit and the press fit of the caulking convex part and the recess in the teeth part, and the fractured surfaces of the magnetic steel sheets As a result, an eddy current may be generated between the layers. Therefore, in the stator core, there is a possibility that the magnetic characteristics deteriorate due to the increase of iron loss, and the motor characteristics of the motor are adversely affected.
  • the stator core can not wind the winding sufficiently, and there is a problem such as an efficiency loss.
  • Patent Document 1 a region having a crimped joint where electromagnetic steel plates are crimped and fixed to each other and a region not having a crimped joint are provided in the teeth portion, and the crimped joint of the teeth is formed.
  • a stator core of reduced construction is disclosed.
  • the electromagnetic steel plates adjacent in the stacking direction in the core back portion are all caulked and joined. Therefore, in the stator core, the strong pressure of the wound winding may be concentrated and act on the crimped joint partially provided in the teeth portion. That is, in this stator core, the crimped joint portion provided in the tooth portion is crushed by the pressure of the winding, and the lamination width on the tooth portion side changes to cause winding contraction due to the winding, and as a result, the winding There is a risk of winding disorder.
  • the present invention has been made to solve the above-described problems, and suppresses distortion due to press-fit and press-fit due to press-fit of caulking convex and concave parts in the teeth and also suppresses shrinkage due to winding. It is an object of the present invention to provide a stator core that can be used and a motor provided with the stator core.
  • the stator core according to the present invention is configured by laminating a plurality of electromagnetic steel sheets, and includes an annular core back portion, a plurality of teeth portions extending inwardly from the core back portion, and in which a winding is wound.
  • the core back portion is a first crimped joint portion in which the electromagnetic steel plates adjacent to each other in the stacking direction are caulked and fixed, and the electromagnetic steel plates adjacent to each other in the stacking direction
  • the first flat plate portions which are not crimped together are alternately arranged along the stacking direction, and the electromagnetic steel plates adjacent to each other in the stacking direction are crimped and fixed to the teeth portion.
  • the second flat plate portion where the second crimped joint portion is provided to the electromagnetic steel plate having the first flat plate portion and the electromagnetic steel plates adjacent in the stacking direction are not crimped to each other is the first flat plate portion.
  • the second flat plate portion in which the electromagnetic steel plates adjacent to each other in the stacking direction are not caulked and joined in the teeth portion is provided, distortion due to press fitting of the caulking joining convex and concave portions and stress due to the press fitting The influence can be suppressed.
  • the first crimped joint portion and the first crimped joint portion are formed on the core back portion so that the lamination width of the core back portion and the lamination width of the teeth portion subjected to tension by winding of the winding become substantially equal. Since the flat plate portion is provided and the second caulking joint portion and the second flat surface portion are provided in the tooth portion, the winding contraction can be suppressed.
  • stator core It is a longitudinal section of an electric motor provided with a stator core concerning an embodiment of the invention. It is the top view which showed the stator provided with the stator core which concerns on embodiment of this invention. It is a top view explaining the connection structure of the segment which constitutes a stator core concerning an embodiment of the invention. It is the top view which showed the modification of the stator provided with the stator core which concerns on embodiment of this invention. It is the top view which showed the different modification of the stator provided with the stator core based on embodiment of this invention. It is a longitudinal cross-sectional view of a stator core concerning an embodiment of the invention.
  • stator core which concerns on embodiment of this invention, Comprising: It is explanatory drawing which showed the relationship between a 1st crimp joint part and a 1st through-hole. It is the top view which showed an example of the kind of electromagnetic steel plate which comprises the stator core which concerns on embodiment of this invention. It is the top view which showed an example of the kind of electromagnetic steel plate which comprises the stator core which concerns on embodiment of this invention. It is the top view which showed an example of the kind of electromagnetic steel plate which comprises the stator core which concerns on embodiment of this invention. It is the top view which showed an example of the kind of electromagnetic steel plate which comprises the stator core which concerns on embodiment of this invention. It is the top view which showed an example of the kind of electromagnetic steel plate which comprises the stator core which concerns on embodiment of this invention.
  • FIG. 1 is a longitudinal sectional view of a motor provided with a stator core according to an embodiment of the present invention.
  • FIG. 2 is a plan view showing a stator provided with a stator core according to the embodiment of the present invention.
  • a stator core 1 according to the present embodiment constitutes a stator 10 used in a motor 100.
  • the electric motor 100 includes, for example, an annular stator 10 fixedly supported on the inner wall surface of the closed container 100a by shrink fitting or the like, and a rotor 20 rotatably provided opposite to the inner surface of the stator 10 It is done.
  • the rotor 20 is inserted into a rotor core 21 configured by laminating a plurality of electromagnetic steel plates 2 punched into a predetermined shape as shown in FIG. 1 and insertion holes formed in the rotor core 21.
  • a permanent magnet 22 is provided.
  • the rotor 20 is fixed to the shaft 23 of the compression mechanism by shrink fitting or the like. The rotor 20 rotates in response to the rotational force from the rotating magnetic field generated by the stator 10.
  • the stator 10 is comprised of a stator core 1 and windings 14 wound around the stator core 1, as shown in FIGS. 1 and 2.
  • the stator core 1 is formed by laminating a plurality of thin electromagnetic steel plates 2 having a thickness of about 0.1 mm to 0.7 mm as an example, and the core back portion 3 configured in an annular shape, and the core back A plurality of teeth 4 extend inward from the portion 3 and on which the winding 14 is wound.
  • FIG. 3 is a plan view illustrating the connection structure of the segments constituting the stator core according to the embodiment of the present invention.
  • the stator core 1 is configured by connecting approximately T-shaped segments 11 (segmented iron cores) obtained by dividing the core back portion 3 into nine in the annular direction.
  • the core back portion 3 has a connecting portion 13 in which adjacent segments 11 are rotatably connected to the adjacent segments 11.
  • the electromagnetic steel plates 2 in the core back portion 3 of the adjacent segments 11 alternately overlap at the end of the core back portion 3, and a common pin hole is formed at the overlapping portion, and the pin is formed in the pin hole It is inserted and connected by pins.
  • stator core 1 can be changed into various shapes such as an annular shape or a linear shape reverse to that in FIG. 2 by rotating each segment 11, and the winding The work space for winding 14 can be secured.
  • the adjacent segments 11 may be rotatably connected by providing concavo-convex fitting portions fitting with each other at the end of the core back portion 3. In other words, as long as the segments 11 adjacent to each other in the annular direction are rotatably connected to the adjacent segments 11, other configurations may be used.
  • FIG. 4 is the top view which showed the modification of the stator provided with the stator core concerning embodiment of this invention.
  • the core back portion 3 may have a welded portion 15 in which the segments 11 adjacent to each other in the ring direction are welded and connected.
  • the stator core 1 can enhance the accuracy of the roundness on the inner diameter side of the teeth portion 4 and thus contributes to the improvement of the operating efficiency of the compressor, for example, when the motor 100 is incorporated into the compressor. be able to.
  • FIG. 5 is a plan view showing another modified example of the stator provided with the stator core according to the embodiment of the present invention.
  • the core back part 3 is not limited to the structure which connected the segment 11 divided
  • each segment 11 is subjected to an insulating process by an insulating material 12 such as a paper or a resin sheet having an insulating function.
  • Windings 14 are wound on the teeth portion 4 of each segment 11 from above the insulating material 12.
  • a slot is formed between the adjacent teeth portions 4, and the slot is a storage space for the winding 14.
  • a magnet wire or the like in which an insulating coating is applied to the outside of a copper wire is used.
  • FIG. 6 is a longitudinal sectional view of a stator core according to an embodiment of the present invention.
  • the first caulking joint in which the electromagnetic steel plates 2 adjacent to each other in the stacking direction are caulked and fixed to the core back portion 3 of each segment 11 at two positions.
  • the portions 5 and the first flat plate portions 6 in which the electromagnetic steel plates 2 adjacent to each other in the stacking direction are not crimped to each other are alternately arranged along the stacking direction.
  • the first crimped joint 5 is configured as a first crimped assembly 50 in which a plurality of electromagnetic steel plates 2 adjacent in the stacking direction are continuously provided. Note that FIG. 1 shows a configuration in which the first crimped joint 5 is continuously formed in four stages, and FIG. 6 shows a configuration in which the first crimped joint 5 is continuously formed in nine stages.
  • the second caulking joint 7 in which the electromagnetic steel plates 2 adjacent to each other in the stacking direction are caulked and fixed to the teeth portion 4 of each segment 11 is the first flat plate portion 6. It is provided in the electromagnetic steel plate 2 which it has. Further, the second flat plate portion 8 in which the electromagnetic steel plates 2 adjacent to each other in the stacking direction are not crimped to each other is provided to the teeth portion 4 of each segment 11 in the electromagnetic steel plate 2 having the first crimped joint 5 It is done.
  • the second crimped joint 7 is configured as a second crimped assembly 70 in which a plurality of electromagnetic steel plates 2 adjacent in the stacking direction are continuously fixed.
  • FIG. 1 the structure which formed the 2nd crimping
  • the lamination width of the core back portion 3 and the lamination width of the teeth portion 4 on which the tension F acts by the winding of the winding 14 become substantially equal. It shall be formed in shape and number.
  • first crimping joint portion 5 by V-crimping is performed by cutting and bending electromagnetic steel plate 2 and fastening a plurality of electromagnetic steel plates 2 with a protrusion having a thickness greater than the thickness thereof.
  • the second caulking joint 7 is applied to the tooth portion 4 by the V caulking.
  • crimping there is a configuration in which circular protrusions called round crimping are formed, and magnetic plates adjacent in the stacking direction are fastened in a press-fit relationship.
  • round V-shaped crimps in which semicircles are deformed diagonally as similar shapes of round crimps, and corner crimps similar to round crimps as crimps having a thickness not greater than the plate thickness.
  • V-crimping has a larger fastening force at the same joint area as round caulking or the like, but the gap between the laminates tends to increase.
  • any of the above-described caulking is a fastening method utilizing press-fitting of the caulking deformed portion, and there is a defect that distortion and stress of the stator core by press-fitting of the convex portion and the concave portion become large and the magnetic characteristics deteriorate.
  • the electromagnetic steel plates 2 of the segments 11 are joined by V caulking, and the number of caulking is reduced to suppress distortion and stress due to press fitting of the convex portion and the concave portion.
  • V staking it is not limited to V staking, and round staking or square staking may be performed.
  • the stator core 1 is not limited to the electromagnetic steel sheet 2 located below the first crimped joint 5 at the lowermost level of the first crimped assembly 50.
  • a first through hole 30 into which the 1 crimped joint 5 is fitted is formed. This is because the interference between the first crimped joint 5 and the upper surface of the electromagnetic steel plate 2 is prevented by inserting the first crimped joint 5 positioned at the lowermost stage into the first through hole 30, and the gap between the laminations is increased.
  • the second crimped joint 7 is fitted to the electromagnetic steel plate 2 located below the second crimped joint 7 in the lowermost stage of the second crimped assembly 70.
  • a second through hole 40 to be inserted is formed.
  • FIG. 7 is a stator core according to the embodiment of the present invention, and is an explanatory view showing a relationship between a first crimped joint and a first through hole.
  • the first through hole 30 is formed in one electromagnetic steel plate 2 when the relationship between the thickness h of the electromagnetic steel plate 2 and the caulking depth y is h ⁇ y.
  • the first through holes 30 have h ⁇ k> y such that h ⁇ k> y. It is necessary to form the electromagnetic steel sheet 2 (three sheets in the case of the illustrated example).
  • the first penetration is performed.
  • the second crimped joint 7 on the lower electromagnetic steel plate 2 including the lowermost electromagnetic steel plate 2.
  • the lowermost electromagnetic steel plate 2 is included among the k electromagnetic steel plates 2 in which the second through holes 40 are formed. It is desirable to provide the first crimped joint 5 on the lower electromagnetic steel sheet 2. This is to reduce the unnecessary first crimped joint 5 and the second crimped joint 7.
  • the total number of electromagnetic steel sheets 2 in which the first through holes 30 are formed in the core back part 3 and the electromagnetic steel sheets 2 in which the second through holes 40 are formed in the teeth part 4 is the first crimped aggregate 50 and the second crimped.
  • the number of positions at which the assembly 70 is exchanged is m, it is composed of m sheets.
  • the stator core 1 when the number m of positions at which the first crimp assembly 50 and the second crimp assembly 70 are interchanged is large, a through hole is formed in the core back portion 3 or the teeth portion 4 by that amount. And the magnetic properties may be degraded. Therefore, it is desirable for the stator core 1 to reduce the number m of positions at which the first crimp assembly 50 and the second crimp assembly 70 are interchanged as much as possible.
  • the amount H of contraction with respect to the gap X between the laminations of the first crimped joint 5 is (D1 ⁇ D2) / 2.
  • D1 is (the number of sheets of the electromagnetic steel plate 2 having the first crimped joint 5)
  • ⁇ (plate thickness h) + the total of the lamination gap X in the electromagnetic steel plate 2 having the first crimped joint 5) Therefore, [(n ⁇ m) / (m + 1)] ⁇ h + ⁇ [(n ⁇ m) ⁇ 1] / (m + 1) ⁇ ⁇ X.
  • FIGS. 8A to 8D are plan views showing an example of the types of electromagnetic steel sheets constituting the stator core according to the embodiment of the present invention.
  • the electromagnetic steel plate 2 shown to FIG. 8A is the structure which provided the 1st crimp joining part 5 in the core back part 3.
  • the electromagnetic steel plate 2 shown to FIG. 8B is the structure which formed the 1st through-hole 30 in the core back part 3, and provided the 2nd crimp joint part 7 in the teeth part 4.
  • FIG. 8C has a configuration in which the second caulking joint 7 is provided in the teeth 4.
  • the stator core 1 of the present embodiment has these four types of electromagnetic steel plates 2 stacked in the order of FIG. 8A, FIG. 8B, FIG. 8C and FIG. 8D, or FIG. 8C, FIG. 8D, FIG. 8A and FIG. It is composed in layers.
  • the electromagnetic steel plates 2 shown in FIGS. 8A to 8D may be formed by continuously laminating the electromagnetic steel plates 2 having the same configuration, for example, as shown in FIG.
  • the 1st crimp joining part 5 in this Embodiment is not limited to the structure made into the 1st crimp assembly 50 which the electromagnetic steel plate 2 which adjoins in the lamination direction was provided in multiple steps continuously. Although illustration is omitted, for example, the first crimped joint 5 may be provided on every other electromagnetic steel plates 2 in the stacking direction.
  • FIG. 9A and FIG. 9B are explanatory views schematically showing main parts of a mold for forming a first crimped joint on a magnetic steel sheet.
  • the first crimped joint 5 is formed by a mold 200 provided with a cam mechanism 201 and a forming punch 202 operating up and down relative to the cam mechanism 201. From the state shown in FIG.
  • the forming punch 202 is moved up and down by the cam mechanism 201 which moves in the left and right direction from the state shown in FIG. 9A.
  • the crimped joint 5 is formed. After the first crimped joint 5 is formed one by one by the mold 200, a plurality of electromagnetic steel sheets 2 are stacked and caulked. When the second crimped joint 7 is formed on the electromagnetic steel sheet 2, the same operation is performed by the mold 200.
  • FIG. 10 is an explanatory view showing a stator core having a crimped joint only at the core back portion.
  • FIG. 11 is an explanatory view showing a state in which the tension by the winding acts on the stator core shown in FIG.
  • a gap is generated between the lamination of the core back portion 3 and the teeth portion 4 by the crimp joint 9. Therefore, as shown in FIG. 11, when the winding is wound around the teeth 4 and tension F acts, the core back portion 3 maintains the lamination gap at the caulking joint 9, but the teeth 4 are wound.
  • the electromagnetic steel plate 2 is bent from the core back portion 3 toward the teeth portion 4 by the contraction. And the tip by the side of the inner diameter of teeth part 4 which adjoins in the lamination direction is deformed so that a crevice may disappear between teeth parts 4 which adjoin.
  • the stator core 1 can not wind the winding 14 to the target position when the winding contraction occurs, and a manufacturing failure such as winding disorder occurs to affect the manufacturing quality.
  • stator core 1 is deformed on the inner diameter side by being contracted, when the segments 11 are arranged in an annular shape, the outer diameter and the inner diameter become barrel-shaped. Therefore, in the stator core 1, the inner diameter roundness and the degree of cylindricality deteriorate, the air gap between the rotor 20 and the stator 10 becomes nonuniform, and the motor characteristics may be adversely affected.
  • the core back portion 3 of the stator core 1 of the present embodiment includes the first crimped joint portion 5 in which the electromagnetic steel plates 2 adjacent to each other in the lamination direction are caulked and fixed, and the electromagnetic steel plates adjacent to the lamination direction
  • the first flat plate portions 6 which are not crimped to each other are alternately arranged along the stacking direction.
  • a second crimped joint portion 7 is provided on the electromagnetic steel plate 2 having the first flat plate portion 6 in which the electromagnetic steel plates 2 adjacent to each other in the stacking direction are crimped and fixed to the teeth portion 4.
  • the second flat plate portion 8 in which the electromagnetic steel plates 2 adjacent to each other in the stacking direction are not crimped to each other is provided to the electromagnetic steel plate 2 having the first crimped joint 5.
  • stator iron core 1 of the present embodiment is provided with second flat plate portion 8 in which electromagnetic steel plates adjacent to each other in the stacking direction are not crimped and joined in teeth portion 4, convexed portions and recessed portions of crimped joint Distortion due to press-in and the influence of stress due to the press-in can be suppressed. Therefore, the stator core 1 can suppress the decrease in the magnetic permeability and can also suppress the eddy current generated between the laminations.
  • the core back is made so that the lamination width of the core back portion 3 and the lamination width of the teeth portion 4 on which tension acts by the winding of the winding 14 become substantially equal. Since the first crimped joint 5 and the first flat plate 6 are provided in the portion 3 and the second crimped joint 7 and the second flat plate 8 are provided in the tooth 4, suppressing the contraction of the winding 14 Can. That is, since the stator core 1 can wind the winding 14 to the target position, it is possible to reduce manufacturing problems such as winding disorder. Further, since the stator core 1 can improve the winding quality, it is possible to reduce the number of rework steps and defects in the process, and to provide a high quality motor 100.
  • first crimped joint 5 of the stator core 1 of the present embodiment is configured as a first crimped assembly 50 in which a plurality of electromagnetic steel plates 2 adjacent in the stacking direction are continuously provided.
  • second crimped joint portion 7 is configured as a second crimped aggregate 70 in which the electromagnetic steel plates 2 adjacent in the stacking direction are continuously fixed in a plurality of stages. That is, the stator core 1 can suppress the deterioration of the magnetic characteristics due to the formation of the through holes in the core back portion 3 and the teeth portion 4.
  • the stator core 1 of the present embodiment inserts the first crimped joint 5 into the electromagnetic steel sheet 2 located below the first crimped joint 5 at the lowermost stage of the first crimped assembly 50.
  • a first through hole 30 is formed.
  • a second through hole 40 in which the second crimped joint 7 is fitted is formed in the electromagnetic steel plate 2 located below the second crimped joint 7 in the lowermost stage of the second crimped assembly 70. Therefore, the stator core 1 prevents interference between the first crimped joint 5 and the upper surface of the electromagnetic steel plate 2 by inserting the first crimped joint 5 located at the lowermost stage into the first through hole 30.
  • the second caulking joint 7 located at the lowermost stage into the second through hole 40 interference between the second caulking joint 7 and the upper surface of the electromagnetic steel sheet 2 can be prevented. It is possible to prevent an increase in the gap between them.
  • stator core 1 of the present embodiment has a configuration in which segments 11 adjacent in the annular direction have connecting portions 13 rotatably connected to adjacent segments 11, each segment 11 can be obtained. By turning it, it can be changed into various shapes, such as an annular ring or a straight line opposite to FIG. 2. Therefore, the stator core 1 can secure a working space for winding the winding 14 and can easily wind the winding 14.
  • the stator core 1 of the present embodiment has a welded portion 15 in which the segments 11 adjacent to each other in the annular direction are welded and connected, whereby the roundness on the inner diameter side of the teeth portion 4 is achieved.
  • the motor 100 is incorporated into a compressor, it can contribute to the improvement of the operating efficiency of the compressor.
  • the stator core 1 can reduce the number of parts and the time for processing, productivity can be improved.
  • stator core 1 of the present embodiment has a configuration in which teeth portion 4 is subjected to an insulating process by insulating material 12 made of a paper material or a resin sheet having an insulating function, and wound by winding 14. The insulation between the winding 14 and the teeth 4 is good.
  • the present invention has been described above based on the embodiment, the present invention is not limited to the configuration of the embodiment described above.
  • the number of first crimped joints 5 constituting the first crimped assembly 50 and the number of second crimped joints 7 constituting the second crimped assembly 70 may not be the same.
  • the lamination width of the core back portion 3 and the lamination width of the teeth portion 4 on which the tension F acts by the winding of the winding 14 may be substantially equal.

Abstract

This stator core is provided with: an annular core back part formed by stacking a plurality of electromagnetic steel sheets; and a plurality of teeth parts extending inward from the core back part and having a winding wound therearound. The core back part is provided with: first caulking joint sections at which the electromagnetic steel sheets adjacent to each other in the stacking direction are fixed by caulking and joining; and first flat plate sections in which the electromagnetic steel sheets adjacent to each other in the stacking direction are not caulked and joined, the first caulking joint sections and the first flat plate sections being alternately disposed in the stacking direction. In the teeth parts, second caulking joint sections, at which the electromagnetic steel sheets adjacent to each other in the stacking direction are fixed by caulking and joining, are provided on the electromagnetic steel sheets that have the first flat plate sections; and second flat plate sections, in which the electromagnetic steel sheets adjacent to each other in the stacking direction are not caulked and joined to each other, are provided on the electromagnetic steel sheets that have the first caulking joint sections.

Description

固定子鉄心及びその固定子鉄心を備えた電動機Stator core and motor having the stator core
　本発明は、電磁鋼板を複数枚積層して構成された固定子鉄心及びその固定子鉄心を備えた電動機に関するものである。 The present invention relates to a stator core formed by laminating a plurality of electromagnetic steel sheets and a motor including the stator core.
　従来、固定子鉄心は、例えば電動機に用いられる固定子を構成するものとして知られている。固定子鉄心は、電磁鋼板を複数枚積層して形成されており、円環状のコアバック部と、コアバック部から内側に向かって延びる複数のティース部とを備えている。ティース部には、絶縁処理が施されて巻線が巻回される。 Conventionally, a stator core is known as one that constitutes a stator used, for example, in a motor. The stator core is formed by laminating a plurality of electromagnetic steel plates, and includes an annular core back portion and a plurality of teeth portions extending inward from the core back portion. An insulation process is applied to the teeth portion and the winding is wound.
　固定子鉄心は、積層方向に隣接する電磁鋼板同士が、コアバック部とティース部においてそれぞれカシメ接合された構成がある。しかし、固定子鉄心は、ティース部におけるカシメの凸部と凹部の圧入による歪み及び該圧入による応力の影響で、透磁率が低下したり、絶縁層が破壊されて電磁鋼板の破断面同士が接触することで積層間に渦電流が生じたりする。そのため、固定子鉄心は、鉄損の増加で磁気特性が劣化し、電動機のモータ特性に悪影響を与える虞があった。一方、固定子鉄心は、ティース部にカシメ接合を施さないと、巻線によるテンションによって巻縮みが発生し潰れたように変形する。固定子鉄心は、この巻縮みによって、巻線を目標の位置に巻回できない巻き乱れが発生し、本来なら巻回することが可能なスペースに巻回できないデッドスペースが生じる。そのため、固定子鉄心は、十分に巻線を巻回することができず、効率ロスが生じる等の課題があった。 The stator core has a configuration in which electromagnetic steel plates adjacent in the stacking direction are caulked and joined at the core back portion and the teeth portion. However, in the stator core, the magnetic permeability is lowered or the insulating layer is broken due to the influence of the strain due to the press fit and the press fit of the caulking convex part and the recess in the teeth part, and the fractured surfaces of the magnetic steel sheets As a result, an eddy current may be generated between the layers. Therefore, in the stator core, there is a possibility that the magnetic characteristics deteriorate due to the increase of iron loss, and the motor characteristics of the motor are adversely affected. On the other hand, if the stator core is not crimped to the teeth, the winding tension causes the coil to contract and deform. In the stator core, this winding contraction causes winding disorder in which the winding can not be wound at the target position, and a dead space which can not be wound in a space that can normally be wound. Therefore, the stator core can not wind the winding sufficiently, and there is a problem such as an efficiency loss.
　例えば、特許文献１には、電磁鋼板同士がカシメ接合されて固定されたカシメ接合部を有する領域と、カシメ接合部を有さない領域とをティース部に設けて、ティース部のカシメ接合部を減らした構成の固定子鉄心が開示されている。 For example, in Patent Document 1, a region having a crimped joint where electromagnetic steel plates are crimped and fixed to each other and a region not having a crimped joint are provided in the teeth portion, and the crimped joint of the teeth is formed. A stator core of reduced construction is disclosed.
特開２０１３－５９２６２号公報JP, 2013-59262, A
　特許文献１に開示された固定子鉄心では、コアバック部において積層方向に隣接する電磁鋼板同士がすべてカシメ接合されている。そのため、この固定子鉄心は、ティース部において部分的に設けたカシメ接合部に、巻回された巻線の強い圧力が集中して作用する虞がある。つまり、この固定子鉄心は、ティース部に設けたカシメ接合部が巻線の圧力によって潰され、ティース部側の積層幅が変化することで巻線による巻縮みを生じ、その結果、巻線が巻き乱れを起こす虞がある。 In the stator core disclosed in Patent Document 1, the electromagnetic steel plates adjacent in the stacking direction in the core back portion are all caulked and joined. Therefore, in the stator core, the strong pressure of the wound winding may be concentrated and act on the crimped joint partially provided in the teeth portion. That is, in this stator core, the crimped joint portion provided in the tooth portion is crushed by the pressure of the winding, and the lamination width on the tooth portion side changes to cause winding contraction due to the winding, and as a result, the winding There is a risk of winding disorder.
　本発明は、上記のような課題を解決するためになされたもので、ティース部におけるカシメの凸部と凹部の圧入による歪み及び該圧入による応力を抑制しつつ、巻線による巻縮みも抑制することができる固定子鉄心及びその固定子鉄心を備えた電動機を提供することを目的とする。 The present invention has been made to solve the above-described problems, and suppresses distortion due to press-fit and press-fit due to press-fit of caulking convex and concave parts in the teeth and also suppresses shrinkage due to winding. It is an object of the present invention to provide a stator core that can be used and a motor provided with the stator core.
　本発明に係る固定子鉄心は、電磁鋼板が複数枚積層されて構成され、円環状のコアバック部と、前記コアバック部から内側に向かって延び、巻線が巻回される複数のティース部と、を備えた固定子鉄心であって、前記コアバック部は、積層方向に隣接する前記電磁鋼板同士がカシメ接合されて固定された第１カシメ接合部と、積層方向に隣接する前記電磁鋼板同士がカシメ接合されていない第１平板部と、が積層方向に沿って交互に配置されて設けられており、前記ティース部には、積層方向に隣接する前記電磁鋼板同士がカシメ接合されて固定された第２カシメ接合部が、前記第１平板部を有している前記電磁鋼板に設けられ、積層方向に隣接する前記電磁鋼板同士がカシメ接合されていない第２平板部が、前記第１カシメ接合部を有している前記電磁鋼板に設けられているものである。 The stator core according to the present invention is configured by laminating a plurality of electromagnetic steel sheets, and includes an annular core back portion, a plurality of teeth portions extending inwardly from the core back portion, and in which a winding is wound. And the core back portion is a first crimped joint portion in which the electromagnetic steel plates adjacent to each other in the stacking direction are caulked and fixed, and the electromagnetic steel plates adjacent to each other in the stacking direction The first flat plate portions which are not crimped together are alternately arranged along the stacking direction, and the electromagnetic steel plates adjacent to each other in the stacking direction are crimped and fixed to the teeth portion. The second flat plate portion where the second crimped joint portion is provided to the electromagnetic steel plate having the first flat plate portion and the electromagnetic steel plates adjacent in the stacking direction are not crimped to each other is the first flat plate portion. Has a crimped joint Wherein there are those provided in the electromagnetic steel sheets.
　本発明によれば、ティース部において積層方向に隣接する電磁鋼板同士がカシメ接合されていない第２平板部を設けているので、カシメ接合の凸部と凹部の圧入による歪み及び該圧入による応力の影響を抑制することができる。また、本発明では、コアバック部の積層幅と、巻線の巻回によってテンションが作用したティース部の積層幅とが略同等となるように、コアバック部に第１カシメ接合部と第１平板部を設け、ティース部に第２カシメ接合部と第２平面部を設けているので、巻線の巻縮みを抑制することができる。 According to the present invention, since the second flat plate portion in which the electromagnetic steel plates adjacent to each other in the stacking direction are not caulked and joined in the teeth portion is provided, distortion due to press fitting of the caulking joining convex and concave portions and stress due to the press fitting The influence can be suppressed. Further, in the present invention, the first crimped joint portion and the first crimped joint portion are formed on the core back portion so that the lamination width of the core back portion and the lamination width of the teeth portion subjected to tension by winding of the winding become substantially equal. Since the flat plate portion is provided and the second caulking joint portion and the second flat surface portion are provided in the tooth portion, the winding contraction can be suppressed.
本発明の実施の形態に係る固定子鉄心を備えた電動機の縦断面図である。It is a longitudinal section of an electric motor provided with a stator core concerning an embodiment of the invention. 本発明の実施の形態に係る固定子鉄心を備えた固定子を示した平面図である。It is the top view which showed the stator provided with the stator core which concerns on embodiment of this invention. 本発明の実施の形態に係る固定子鉄心を構成するセグメントの連結構造を説明した平面図である。It is a top view explaining the connection structure of the segment which constitutes a stator core concerning an embodiment of the invention. 本発明の実施の形態に係る固定子鉄心を備えた固定子の変形例を示した平面図である。It is the top view which showed the modification of the stator provided with the stator core which concerns on embodiment of this invention. 本発明の実施の形態に係る固定子鉄心を備えた固定子の異なる変形例を示した平面図である。It is the top view which showed the different modification of the stator provided with the stator core based on embodiment of this invention. 本発明の実施の形態に係る固定子鉄心の縦断面図である。It is a longitudinal cross-sectional view of a stator core concerning an embodiment of the invention. 本発明の実施の形態に係る固定子鉄心であって、第１カシメ接合部と第１貫通孔との関係を示した説明図である。It is a stator core which concerns on embodiment of this invention, Comprising: It is explanatory drawing which showed the relationship between a 1st crimp joint part and a 1st through-hole. 本発明の実施の形態に係る固定子鉄心を構成する電磁鋼板の種類の一例を示した平面図である。It is the top view which showed an example of the kind of electromagnetic steel plate which comprises the stator core which concerns on embodiment of this invention. 本発明の実施の形態に係る固定子鉄心を構成する電磁鋼板の種類の一例を示した平面図である。It is the top view which showed an example of the kind of electromagnetic steel plate which comprises the stator core which concerns on embodiment of this invention. 本発明の実施の形態に係る固定子鉄心を構成する電磁鋼板の種類の一例を示した平面図である。It is the top view which showed an example of the kind of electromagnetic steel plate which comprises the stator core which concerns on embodiment of this invention. 本発明の実施の形態に係る固定子鉄心を構成する電磁鋼板の種類の一例を示した平面図である。It is the top view which showed an example of the kind of electromagnetic steel plate which comprises the stator core which concerns on embodiment of this invention. 電磁鋼板に第１カシメ接合部を形成するための金型の要部を概略的に示した説明図である。It is explanatory drawing which showed roughly the principal part of the metal mold | die for forming a 1st crimp joining part in a magnetic steel sheet. 電磁鋼板に第１カシメ接合部を形成するための金型の要部を概略的に示した説明図である。It is explanatory drawing which showed roughly the principal part of the metal mold | die for forming a 1st crimp joining part in a magnetic steel sheet. コアバック部にのみカシメ接合部を有する固定子鉄心を示した説明図である。It is explanatory drawing which showed the stator core which has a crimp joint only in a core back part. 図１０に示した固定子鉄心に巻線によるテンションが作用した状態を示した説明図である。It is explanatory drawing which showed the state which the tension by winding applied to the stator core shown in FIG.
　以下、図面を参照して、本発明の実施の形態について説明する。なお、各図中、同一または相当する部分には、同一符号を付して、その説明を適宜省略または簡略化する。また、各図に記載の構成について、その形状、大きさ、及び配置等は、本発明の範囲内で適宜変更することができる。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings, the same or corresponding parts will be denoted by the same reference numerals, and the description thereof will be appropriately omitted or simplified. Further, the configuration, size, arrangement and the like of the configuration described in each drawing can be appropriately changed within the scope of the present invention.
実施の形態．
　図１は、本発明の実施の形態に係る固定子鉄心を備えた電動機の縦断面図である。図２は、本発明の実施の形態に係る固定子鉄心を備えた固定子を示した平面図である。本実施の形態に係る固定子鉄心１は、図１に示すように、電動機１００に用いられる固定子１０を構成するものである。電動機１００は、例えば密閉容器１００ａの内壁面に焼き嵌め等により固着支持された円環状の固定子１０と、固定子１０の内側面に対向して回転可能に設けられた回転子２０とで構成されている。 Embodiment.
FIG. 1 is a longitudinal sectional view of a motor provided with a stator core according to an embodiment of the present invention. FIG. 2 is a plan view showing a stator provided with a stator core according to the embodiment of the present invention. As shown in FIG. 1, a stator core 1 according to the present embodiment constitutes a stator 10 used in a motor 100. The electric motor 100 includes, for example, an annular stator 10 fixedly supported on the inner wall surface of the closed container 100a by shrink fitting or the like, and a rotor 20 rotatably provided opposite to the inner surface of the stator 10 It is done.
　回転子２０は、図１に示すように、所定の形状に打ち抜いた電磁鋼板２を複数枚積層して構成された回転子鉄心２１と、回転子鉄心２１に形成された挿入孔に挿入される永久磁石２２とを備えている。回転子２０は、例えば電動機１００が圧縮機に組み込まれた場合、圧縮機構部の軸部２３に焼き嵌め等により固定される。回転子２０は、固定子１０が発生する回転磁界からの回転力を受けて回転する。 The rotor 20 is inserted into a rotor core 21 configured by laminating a plurality of electromagnetic steel plates 2 punched into a predetermined shape as shown in FIG. 1 and insertion holes formed in the rotor core 21. A permanent magnet 22 is provided. For example, when the motor 100 is incorporated into a compressor, the rotor 20 is fixed to the shaft 23 of the compression mechanism by shrink fitting or the like. The rotor 20 rotates in response to the rotational force from the rotating magnetic field generated by the stator 10.
　固定子１０は、図１及び図２に示すように、固定子鉄心１と、固定子鉄心１に巻回される巻線１４とで構成されている。固定子鉄心１は、一例として板厚が０．１ｍｍ～０．７ｍｍ程度の薄厚の電磁鋼板２を複数枚積層して形成されており、円環状に構成されたコアバック部３と、コアバック部３から内側に向かって延び、巻線１４が巻回される複数のティース部４とを備えている。 The stator 10 is comprised of a stator core 1 and windings 14 wound around the stator core 1, as shown in FIGS. 1 and 2. The stator core 1 is formed by laminating a plurality of thin electromagnetic steel plates 2 having a thickness of about 0.1 mm to 0.7 mm as an example, and the core back portion 3 configured in an annular shape, and the core back A plurality of teeth 4 extend inward from the portion 3 and on which the winding 14 is wound.
　図３は、本発明の実施の形態に係る固定子鉄心を構成するセグメントの連結構造を説明した平面図である。固定子鉄心１は、図２及び図３に示すように、コアバック部３を、円環方向に９個に分割した略Ｔ字形状のセグメント１１（分割鉄心）を連結して構成されている。コアバック部３は、隣接するセグメント１１同士が、隣接するセグメント１１に対して回動自在に連結された連結部１３を有している。具体的には、隣接するセグメント１１のコアバック部３における電磁鋼板２同士が、コアバック部３の端部において交互に重なり合い、重なり合った箇所に共通のピン孔が形成され、ピン孔にピンが差し込まれてピン連結されている。したがって、本実施の形態に係る固定子鉄心１は、各セグメント１１を回動させることによって、図２とは逆向きの円環状又は直線状等の様々な形状に変化させることができ、巻線１４を巻回するための作業スペースを確保することができる。なお、隣接するセグメント１１同士は、互いに嵌り合う凹凸状の嵌合部をコアバック部３の端部に設けて、回動自在に連結した構成でもよい。要するに、円環方向に隣接するセグメント１１同士が、隣接するセグメント１１に対して回動自在に連結された構成であれば、他の形態でもよい。 FIG. 3 is a plan view illustrating the connection structure of the segments constituting the stator core according to the embodiment of the present invention. As shown in FIG. 2 and FIG. 3, the stator core 1 is configured by connecting approximately T-shaped segments 11 (segmented iron cores) obtained by dividing the core back portion 3 into nine in the annular direction. . The core back portion 3 has a connecting portion 13 in which adjacent segments 11 are rotatably connected to the adjacent segments 11. Specifically, the electromagnetic steel plates 2 in the core back portion 3 of the adjacent segments 11 alternately overlap at the end of the core back portion 3, and a common pin hole is formed at the overlapping portion, and the pin is formed in the pin hole It is inserted and connected by pins. Therefore, stator core 1 according to the present embodiment can be changed into various shapes such as an annular shape or a linear shape reverse to that in FIG. 2 by rotating each segment 11, and the winding The work space for winding 14 can be secured. The adjacent segments 11 may be rotatably connected by providing concavo-convex fitting portions fitting with each other at the end of the core back portion 3. In other words, as long as the segments 11 adjacent to each other in the annular direction are rotatably connected to the adjacent segments 11, other configurations may be used.
　なお、図４は、本発明の実施の形態に係る固定子鉄心を備えた固定子の変形例を示した平面図である。図４に示すように、コアバック部３は、円環方向に隣接するセグメント１１同士が溶接されて連結された溶接部１５を有する構成としてもよい。この場合、固定子鉄心１は、ティース部４の内径側の真円度の精度を高めることができるので、例えば電動機１００が圧縮機に組み込まれた場合、圧縮機の運転効率の向上に寄与することができる。 In addition, FIG. 4 is the top view which showed the modification of the stator provided with the stator core concerning embodiment of this invention. As shown in FIG. 4, the core back portion 3 may have a welded portion 15 in which the segments 11 adjacent to each other in the ring direction are welded and connected. In this case, the stator core 1 can enhance the accuracy of the roundness on the inner diameter side of the teeth portion 4 and thus contributes to the improvement of the operating efficiency of the compressor, for example, when the motor 100 is incorporated into the compressor. be able to.
　また、図５は、本発明の実施の形態に係る固定子鉄心を備えた固定子の異なる変形例を示した平面図である。コアバック部３は、上記した円環方向に分割したセグメント１１を連結した構成に限定されず、図５に示すように、円環状に一体的に形成した構成で実施することもできる。 FIG. 5 is a plan view showing another modified example of the stator provided with the stator core according to the embodiment of the present invention. The core back part 3 is not limited to the structure which connected the segment 11 divided | segmented in the above-mentioned annular direction, As shown in FIG. 5, it can also implement by the structure integrally formed annularly.
　各セグメント１１は、図１に示すように、絶縁機能を有する紙又は樹脂シート等の絶縁材１２によって、絶縁処理が施されている。各セグメント１１のティース部４には、絶縁材１２の上から巻線１４が巻回されている。なお、隣接するティース部４の間にはスロットが形成されており、スロットが巻線１４の収納スペースとなっている。巻線１４は、銅線の外側に絶縁被膜が施されたマグネットワイヤなどが使用される。 As shown in FIG. 1, each segment 11 is subjected to an insulating process by an insulating material 12 such as a paper or a resin sheet having an insulating function. Windings 14 are wound on the teeth portion 4 of each segment 11 from above the insulating material 12. A slot is formed between the adjacent teeth portions 4, and the slot is a storage space for the winding 14. As the winding 14, a magnet wire or the like in which an insulating coating is applied to the outside of a copper wire is used.
　図６は、本発明の実施の形態に係る固定子鉄心の縦断面図である。各セグメント１１のコアバック部３には、図１、図２及び図６に示すように、積層方向に隣接する電磁鋼板２同士を二箇所の位置でカシメ接合されて固定された第１カシメ接合部５と、積層方向に隣接する電磁鋼板２同士がカシメ接合されていない第１平板部６と、が積層方向に沿って交互に配置されている。第１カシメ接合部５は、積層方向において隣接する電磁鋼板２が複数段連続して設けられた第１カシメ集合体５０として構成されている。なお、図１では、第１カシメ接合部５を４段連続して形成した構成を示し、図６では、第１カシメ接合部５を９段連続して形成した構成を示している。 FIG. 6 is a longitudinal sectional view of a stator core according to an embodiment of the present invention. As shown in FIG. 1, FIG. 2 and FIG. 6, the first caulking joint in which the electromagnetic steel plates 2 adjacent to each other in the stacking direction are caulked and fixed to the core back portion 3 of each segment 11 at two positions. The portions 5 and the first flat plate portions 6 in which the electromagnetic steel plates 2 adjacent to each other in the stacking direction are not crimped to each other are alternately arranged along the stacking direction. The first crimped joint 5 is configured as a first crimped assembly 50 in which a plurality of electromagnetic steel plates 2 adjacent in the stacking direction are continuously provided. Note that FIG. 1 shows a configuration in which the first crimped joint 5 is continuously formed in four stages, and FIG. 6 shows a configuration in which the first crimped joint 5 is continuously formed in nine stages.
　一方、各セグメント１１のティース部４には、図６に示すように、積層方向に隣接する電磁鋼板２同士がカシメ接合されて固定される第２カシメ接合部７が、第１平板部６を有している電磁鋼板２に設けられている。また、各セグメント１１のティース部４には、積層方向に隣接する電磁鋼板２同士がカシメ接合されていない第２平板部８が、第１カシメ接合部５を有している電磁鋼板２に設けられている。第２カシメ接合部７は、積層方向において隣接する電磁鋼板２を複数段連続して固定された第２カシメ集合体７０として構成されている。なお、図１では、第２カシメ接合部７を４段連続して形成した構成を示し、図６では、第２カシメ接合部７を９段連続して形成した構成を示している。 On the other hand, as shown in FIG. 6, the second caulking joint 7 in which the electromagnetic steel plates 2 adjacent to each other in the stacking direction are caulked and fixed to the teeth portion 4 of each segment 11 is the first flat plate portion 6. It is provided in the electromagnetic steel plate 2 which it has. Further, the second flat plate portion 8 in which the electromagnetic steel plates 2 adjacent to each other in the stacking direction are not crimped to each other is provided to the teeth portion 4 of each segment 11 in the electromagnetic steel plate 2 having the first crimped joint 5 It is done. The second crimped joint 7 is configured as a second crimped assembly 70 in which a plurality of electromagnetic steel plates 2 adjacent in the stacking direction are continuously fixed. In addition, in FIG. 1, the structure which formed the 2nd crimping | crimped junction part 7 continuously 4 steps | paragraphs is shown, and the structure which formed the 2nd crimping | crimped junction part 7 9 steps continuously is shown in FIG.
　第１カシメ接合部５と第２カシメ接合部７は、コアバック部３の積層幅と、巻線１４の巻回によってテンションＦが作用したティース部４の積層幅とが略同等となるような形状及び個数で形成するものとする。 In the first crimp joint 5 and the second crimp joint 7, the lamination width of the core back portion 3 and the lamination width of the teeth portion 4 on which the tension F acts by the winding of the winding 14 become substantially equal. It shall be formed in shape and number.
　ここで、カシメ接合について説明する。本実施の形態の固定子鉄心１では、電磁鋼板２に対して切り曲げ加工を行い、板厚以上の突起により複数枚の電磁鋼板２を締結させるＶカシメによる第１カシメ接合部５がコアバック部３に施され、Ｖカシメによる第２カシメ接合部７がティース部４に施されている。他のカシメとしては、丸カシメと呼ばれる円状の突起を成形し、積層方向に隣り合う磁性板同士を圧入関係で締結する構成がある。また、丸カシメの類似形状として、半円を斜めに変形させた丸Ｖ字カシメ、及び板厚以下のカシメとして丸カシメに類似した角カシメがある。 Here, caulking will be described. In stator iron core 1 of the present embodiment, first crimping joint portion 5 by V-crimping is performed by cutting and bending electromagnetic steel plate 2 and fastening a plurality of electromagnetic steel plates 2 with a protrusion having a thickness greater than the thickness thereof. The second caulking joint 7 is applied to the tooth portion 4 by the V caulking. As another crimping, there is a configuration in which circular protrusions called round crimping are formed, and magnetic plates adjacent in the stacking direction are fastened in a press-fit relationship. In addition, there are round V-shaped crimps in which semicircles are deformed diagonally as similar shapes of round crimps, and corner crimps similar to round crimps as crimps having a thickness not greater than the plate thickness.
　Ｖカシメは、丸カシメ等と比べ、同一の接合面積において大きな締結力を有するが、積層間の隙間が増える傾向にある。また、上記したいずれのカシメも、カシメ変形部の圧入を利用した締結方法であり、凸部と凹部の圧入による固定子鉄心の歪み、応力が大きくなり、磁気特性が悪化する欠点がある。 V-crimping has a larger fastening force at the same joint area as round caulking or the like, but the gap between the laminates tends to increase. Further, any of the above-described caulking is a fastening method utilizing press-fitting of the caulking deformed portion, and there is a defect that distortion and stress of the stator core by press-fitting of the convex portion and the concave portion become large and the magnetic characteristics deteriorate.
　本実施の形態の固定子鉄心１では、各セグメント１１の電磁鋼板２がＶカシメにより接合され、カシメの数を減らして凸部と凹部の圧入による歪み、応力を抑制している。ただし、Ｖカシメに限定されず、丸カシメ又は角カシメ等でもよい。 In the stator core 1 of the present embodiment, the electromagnetic steel plates 2 of the segments 11 are joined by V caulking, and the number of caulking is reduced to suppress distortion and stress due to press fitting of the convex portion and the concave portion. However, it is not limited to V staking, and round staking or square staking may be performed.
　本実施の形態の固定子鉄心１は、図１及び図６に示すように、第１カシメ集合体５０の最下段にある第１カシメ接合部５の下方に位置する電磁鋼板２に、該第１カシメ接合部５を嵌め込む第１貫通孔３０が形成されている。これは、最下段に位置する第１カシメ接合部５を第１貫通孔３０に嵌入させることで、第１カシメ接合部５と電磁鋼板２の上面との干渉を防ぎ、積層間の隙間の増加を防ぐためである。同様に、本実施の形態の固定子鉄心１では、第２カシメ集合体７０の最下段にある第２カシメ接合部７の下方に位置する電磁鋼板２に、該第２カシメ接合部７を嵌め込む第２貫通孔４０が形成されている。 As shown in FIGS. 1 and 6, the stator core 1 according to the present embodiment is not limited to the electromagnetic steel sheet 2 located below the first crimped joint 5 at the lowermost level of the first crimped assembly 50. A first through hole 30 into which the 1 crimped joint 5 is fitted is formed. This is because the interference between the first crimped joint 5 and the upper surface of the electromagnetic steel plate 2 is prevented by inserting the first crimped joint 5 positioned at the lowermost stage into the first through hole 30, and the gap between the laminations is increased. To prevent Similarly, in the stator core 1 of the present embodiment, the second crimped joint 7 is fitted to the electromagnetic steel plate 2 located below the second crimped joint 7 in the lowermost stage of the second crimped assembly 70. A second through hole 40 to be inserted is formed.
　図７は、本発明の実施の形態に係る固定子鉄心であって、第１カシメ接合部と第１貫通孔との関係を示した説明図である。第１貫通孔３０は、電磁鋼板２の板厚ｈとカシメ深さｙの関係がｈ≧ｙである場合、１枚の電磁鋼板２に形成される。一方、第１貫通孔３０は、図７に示すように、電磁鋼板２の板厚ｈとカシメ深さｙの関係がｈ＜ｙである場合、ｈ×ｋ＞ｙとなるようにｋ枚の電磁鋼板２（図示例の場合は３枚）に形成する必要がある。第１貫通孔３０から突き出した第１カシメ接合部５の先端によって、電磁鋼板２の積層間の隙間が増加する事態を防止するためである。なお、第２カシメ接合部７と第２貫通孔４０との関係についても同様である。 FIG. 7 is a stator core according to the embodiment of the present invention, and is an explanatory view showing a relationship between a first crimped joint and a first through hole. The first through hole 30 is formed in one electromagnetic steel plate 2 when the relationship between the thickness h of the electromagnetic steel plate 2 and the caulking depth y is h ≧ y. On the other hand, as shown in FIG. 7, when the relationship between the thickness h of the electromagnetic steel sheet 2 and the caulking depth y is h <y, the first through holes 30 have h × k> y such that h × k> y. It is necessary to form the electromagnetic steel sheet 2 (three sheets in the case of the illustrated example). It is for preventing the situation where the crevice between laminations of electromagnetic steel plate 2 increases by the tip of the 1st caulking junction part 5 which projected from the 1st penetration hole 30. The same applies to the relationship between the second crimped joint 7 and the second through hole 40.
　なお、電磁鋼板２の板厚ｈとカシメ深さｙの関係がｈ＜ｙである場合であり、第１貫通孔３０を形成する電磁鋼板２がｋ枚必要である場合には、第１貫通孔３０が形成されたｋ枚の電磁鋼板２のうち、最下段の電磁鋼板２を含む下方の電磁鋼板２に第２カシメ接合部７を設けることが望ましい。同様に、第２貫通孔４０を形成する電磁鋼板２がｋ枚必要である場合には、第２貫通孔４０が形成されたｋ枚の電磁鋼板２のうち、最下段の電磁鋼板２を含む下方の電磁鋼板２に第１カシメ接合部５を設けることが望ましい。不要な第１カシメ接合部５及び第２カシメ接合部７を減らすためである。 In the case where the relationship between the thickness h of the electromagnetic steel sheet 2 and the caulking depth y is h <y, and k electromagnetic steel sheets 2 forming the first through holes 30 are required, the first penetration is performed. Among the k electromagnetic steel plates 2 in which the holes 30 are formed, it is desirable to provide the second crimped joint 7 on the lower electromagnetic steel plate 2 including the lowermost electromagnetic steel plate 2. Similarly, when k electromagnetic steel plates 2 forming the second through hole 40 are required, the lowermost electromagnetic steel plate 2 is included among the k electromagnetic steel plates 2 in which the second through holes 40 are formed. It is desirable to provide the first crimped joint 5 on the lower electromagnetic steel sheet 2. This is to reduce the unnecessary first crimped joint 5 and the second crimped joint 7.
　次に、第１カシメ集合体５０と第２カシメ集合体７０とが入れ替わる位置の回数ｍの設定について説明する。コアバック部３に第１貫通孔３０が形成された電磁鋼板２と、ティース部４に第２貫通孔４０が形成された電磁鋼板２の合計枚数は、第１カシメ集合体５０と第２カシメ集合体７０とが入れ替わる位置の回数をｍ回とすると、ｍ枚で構成される。固定子鉄心１は、第１カシメ集合体５０と第２カシメ集合体７０とが入れ替わる位置の回数ｍが多いと、その分だけコアバック部３又はティース部４に貫通孔が形成されることになり、磁気特性が悪化するおそれがある。そのため、固定子鉄心１は、第１カシメ集合体５０と第２カシメ集合体７０とが入れ替わる位置の回数ｍを、できるだけ少なくすることが望ましい。 Next, setting of the number m of positions where the first crimp assembly 50 and the second crimp assembly 70 are interchanged will be described. The total number of electromagnetic steel sheets 2 in which the first through holes 30 are formed in the core back part 3 and the electromagnetic steel sheets 2 in which the second through holes 40 are formed in the teeth part 4 is the first crimped aggregate 50 and the second crimped. Assuming that the number of positions at which the assembly 70 is exchanged is m, it is composed of m sheets. In the stator core 1, when the number m of positions at which the first crimp assembly 50 and the second crimp assembly 70 are interchanged is large, a through hole is formed in the core back portion 3 or the teeth portion 4 by that amount. And the magnetic properties may be degraded. Therefore, it is desirable for the stator core 1 to reduce the number m of positions at which the first crimp assembly 50 and the second crimp assembly 70 are interchanged as much as possible.
　一方、図６に示すように、電磁鋼板２の総枚数ｎとすると、第１カシメ接合部５の積層間の隙間Ｘに対する巻縮み量Ｈは、（Ｄ１－Ｄ２）／２となる。ここで、Ｄ１は、（第１カシメ接合部５を有する電磁鋼板２の枚数）×（板厚ｈ）＋（第１カシメ接合部５を有する電磁鋼板２における積層の隙間Ｘの合計）であるため、［（ｎ－ｍ）／（ｍ＋１）］×ｈ＋｛［（ｎ－ｍ）－１］／（ｍ＋１）｝×Ｘとなる。一方、Ｄ２は、（第１カシメ接合部５を有する電磁鋼板２の枚数）×（板厚ｈ）であるため、［（ｎ－ｍ）／（ｍ＋１）］×ｈとなる。よって、巻縮み量Ｈは、（Ｄ１－Ｄ２）／２であるから、｛［（ｎ－ｍ）－１］／（ｍ＋１）｝×（Ｘ／２）となる。つまり、固定子鉄心１は、巻縮み量Ｈが、ｍに反比例するため、ｍの回数が少ない場合、Ｈが大きくなるデメリットが発生する。固定子鉄心１は、このような特徴を考慮した上で、要求される規格に対しｍの値を任意に設定する必要がある。 On the other hand, as shown in FIG. 6, assuming that the total number n of the magnetic steel plates 2 is n, the amount H of contraction with respect to the gap X between the laminations of the first crimped joint 5 is (D1−D2) / 2. Here, D1 is (the number of sheets of the electromagnetic steel plate 2 having the first crimped joint 5) × (plate thickness h) + (the total of the lamination gap X in the electromagnetic steel plate 2 having the first crimped joint 5) Therefore, [(n−m) / (m + 1)] × h + {[(n−m) −1] / (m + 1)} × X. On the other hand, since D2 is (the number of sheets of the electromagnetic steel plate 2 having the first crimped joint 5) × (plate thickness h), it is [(nm) / (m + 1)] × h. Therefore, since the amount of contraction H is (D1−D2) / 2, it is {[(n−m) −1] / (m + 1)} × (X / 2). That is, in the stator core 1, since the amount of contraction H is in inverse proportion to m, when the number of times of m is small, the disadvantage that H becomes large occurs. The stator core 1 needs to set the value of m arbitrarily to the required standard in consideration of such characteristics.
　次に、図８Ａ～図８Ｄに基づいて本実施の形態における電磁鋼板の構成について説明する。図８Ａ～図８Ｄは、本発明の実施の形態に係る固定子鉄心を構成する電磁鋼板の種類の一例を示した平面図である。図８Ａに示す電磁鋼板２は、コアバック部３に第１カシメ接合部５を設けた構成である。図８Ｂに示す電磁鋼板２は、コアバック部３に第１貫通孔３０を形成し、ティース部４に第２カシメ接合部７を設けた構成である。図８Ｃに示す電磁鋼板２は、ティース部４に第２カシメ接合部７を設けた構成である。図８Ｄに示す電磁鋼板２は、コアバック部３に第１カシメ接合部５を設け、ティース部４に第２貫通孔４０を形成した構成である。本実施の形態の固定子鉄心１は、これらの４種類の電磁鋼板２を、図８Ａ、図８Ｂ、図８Ｃ、図８Ｄの順に重ね、或いは図８Ｃ、図８Ｄ、図８Ａ、図８Ｂの順に重ねて構成される。なお、図８Ａ～図８Ｄに示した電磁鋼板２は、例えば図１に示すように、同じ構成の電磁鋼板２を連続して重ねてもよい。 Next, the configuration of the magnetic steel sheet in the present embodiment will be described based on FIGS. 8A to 8D. 8A to 8D are plan views showing an example of the types of electromagnetic steel sheets constituting the stator core according to the embodiment of the present invention. The electromagnetic steel plate 2 shown to FIG. 8A is the structure which provided the 1st crimp joining part 5 in the core back part 3. As shown in FIG. The electromagnetic steel plate 2 shown to FIG. 8B is the structure which formed the 1st through-hole 30 in the core back part 3, and provided the 2nd crimp joint part 7 in the teeth part 4. FIG. The electromagnetic steel plate 2 shown in FIG. 8C has a configuration in which the second caulking joint 7 is provided in the teeth 4. The electromagnetic steel plate 2 shown in FIG. 8D has a configuration in which the first caulking joint 5 is provided in the core back portion 3 and the second through hole 40 is formed in the teeth 4. The stator core 1 of the present embodiment has these four types of electromagnetic steel plates 2 stacked in the order of FIG. 8A, FIG. 8B, FIG. 8C and FIG. 8D, or FIG. 8C, FIG. 8D, FIG. 8A and FIG. It is composed in layers. The electromagnetic steel plates 2 shown in FIGS. 8A to 8D may be formed by continuously laminating the electromagnetic steel plates 2 having the same configuration, for example, as shown in FIG.
　なお、本実施の形態における第１カシメ接合部５は、積層方向において隣接する電磁鋼板２を複数段連続して設けられた第１カシメ集合体５０とした構成に限定されない。図示することは省略したが、例えば第１カシメ接合部５は、積層方向において、１つおきの電磁鋼板２に設けてもよい。 In addition, the 1st crimp joining part 5 in this Embodiment is not limited to the structure made into the 1st crimp assembly 50 which the electromagnetic steel plate 2 which adjoins in the lamination direction was provided in multiple steps continuously. Although illustration is omitted, for example, the first crimped joint 5 may be provided on every other electromagnetic steel plates 2 in the stacking direction.
　次に、本実施の形態に係る固定子鉄心１の第１カシメ接合部５と第２カシメ接合部７を電磁鋼板２に形成するための成型方法を図９Ａ及び図９Ｂに基づいて説明する。図９Ａ及び図９Ｂは、電磁鋼板に第１カシメ接合部を形成するための金型の要部を概略的に示した説明図である。第１カシメ接合部５は、図９Ａ及び図９Ｂに示すように、カム機構２０１と、カム機構２０１に対して上下に稼働する成形パンチ２０２とを備えた金型２００によって形成される。金型２００は、図９Ａに示す状態から、図９Ｂに示すように左右方向に移動するカム機構２０１によって成形パンチ２０２が上下に稼働し、該成形パンチ２０２の先端部で電磁鋼板２に第１カシメ接合部５を形成する構成である。電磁鋼板２は、金型２００によって１枚ずつ第１カシメ接合部５が形成された後、複数枚重ね合わせてカシメ接合される。なお、電磁鋼板２に第２カシメ接合部７を形成する場合も、同じように金型２００によって行われる。 Next, a forming method for forming the first crimped joint 5 and the second crimped joint 7 of the stator core 1 according to the present embodiment on the electromagnetic steel plate 2 will be described based on FIGS. 9A and 9B. FIG. 9A and FIG. 9B are explanatory views schematically showing main parts of a mold for forming a first crimped joint on a magnetic steel sheet. As shown in FIGS. 9A and 9B, the first crimped joint 5 is formed by a mold 200 provided with a cam mechanism 201 and a forming punch 202 operating up and down relative to the cam mechanism 201. From the state shown in FIG. 9A, the forming punch 202 is moved up and down by the cam mechanism 201 which moves in the left and right direction from the state shown in FIG. 9A. The crimped joint 5 is formed. After the first crimped joint 5 is formed one by one by the mold 200, a plurality of electromagnetic steel sheets 2 are stacked and caulked. When the second crimped joint 7 is formed on the electromagnetic steel sheet 2, the same operation is performed by the mold 200.
　ここで、コアバック部３にのみカシメ接合部９を有する固定子鉄心の構成と問題点を、図１０及び図１１に基づいて説明する。図１０は、コアバック部にのみカシメ接合部を有する固定子鉄心を示した説明図である。図１１は、図１０に示した固定子鉄心に巻線によるテンションが作用した状態を示した説明図である。固定子鉄心１は、図１０に示すように、カシメ接合部９によって、コアバック部３およびティース部４の積層間に隙間が生じる。そのため、図１１に示すように、ティース部４に巻線が巻回されてテンションＦが作用すると、コアバック部３は積層の隙間がカシメ接合部９で維持されるが、ティース部４は巻線１４のテンションＦによって巻縮みする。電磁鋼板２は、この巻縮みによって、コアバック部３からティース部４に向かって屈曲する。そして、積層方向に隣接するティース部４の内径側の先端同士は、隣接するティース部４間で隙間がなくなるように変形する。固定子鉄心１は、巻縮みが発生すると、巻線１４を目標の位置に巻回することができず、巻き乱れ等の製造不具合が発生して、製造品質に影響を与える。 Here, the configuration and problems of the stator core having the caulking joint portion 9 only in the core back portion 3 will be described based on FIG. 10 and FIG. FIG. 10 is an explanatory view showing a stator core having a crimped joint only at the core back portion. FIG. 11 is an explanatory view showing a state in which the tension by the winding acts on the stator core shown in FIG. In the stator core 1, as shown in FIG. 10, a gap is generated between the lamination of the core back portion 3 and the teeth portion 4 by the crimp joint 9. Therefore, as shown in FIG. 11, when the winding is wound around the teeth 4 and tension F acts, the core back portion 3 maintains the lamination gap at the caulking joint 9, but the teeth 4 are wound. It is contracted by the tension F of the wire 14. The electromagnetic steel plate 2 is bent from the core back portion 3 toward the teeth portion 4 by the contraction. And the tip by the side of the inner diameter of teeth part 4 which adjoins in the lamination direction is deformed so that a crevice may disappear between teeth parts 4 which adjoin. The stator core 1 can not wind the winding 14 to the target position when the winding contraction occurs, and a manufacturing failure such as winding disorder occurs to affect the manufacturing quality.
　また、固定子鉄心１は、巻縮みすることによって内径側が変形するので、各セグメント１１を円環状に配置すると、外径と内径の形状が樽型になる。そのため、固定子鉄心１は、内径真円度及び円筒度が悪化し、回転子２０と固定子１０とのエアギャップが不均一となり、モータ特性に悪影響を及ぼすおそれがある。 Further, since the stator core 1 is deformed on the inner diameter side by being contracted, when the segments 11 are arranged in an annular shape, the outer diameter and the inner diameter become barrel-shaped. Therefore, in the stator core 1, the inner diameter roundness and the degree of cylindricality deteriorate, the air gap between the rotor 20 and the stator 10 becomes nonuniform, and the motor characteristics may be adversely affected.
　そこで、本実施の形態の固定子鉄心１のコアバック部３は、積層方向に隣接する電磁鋼板２同士がカシメ接合されて固定される第１カシメ接合部５と、積層方向に隣接する電磁鋼板２同士がカシメ接合されていない第１平板部６と、が積層方向に沿って交互に配置されて設けられている。そして、ティース部４には、積層方向に隣接する電磁鋼板２同士がカシメ接合されて固定される第２カシメ接合部７が、第１平板部６を有している電磁鋼板２に設けられている。また、ティース部４には、積層方向に隣接する電磁鋼板２同士がカシメ接合されていない第２平板部８が、第１カシメ接合部５を有している電磁鋼板２に設けられている。 Therefore, the core back portion 3 of the stator core 1 of the present embodiment includes the first crimped joint portion 5 in which the electromagnetic steel plates 2 adjacent to each other in the lamination direction are caulked and fixed, and the electromagnetic steel plates adjacent to the lamination direction The first flat plate portions 6 which are not crimped to each other are alternately arranged along the stacking direction. Then, a second crimped joint portion 7 is provided on the electromagnetic steel plate 2 having the first flat plate portion 6 in which the electromagnetic steel plates 2 adjacent to each other in the stacking direction are crimped and fixed to the teeth portion 4. There is. Further, in the teeth portion 4, the second flat plate portion 8 in which the electromagnetic steel plates 2 adjacent to each other in the stacking direction are not crimped to each other is provided to the electromagnetic steel plate 2 having the first crimped joint 5.
　つまり、本実施の形態の固定子鉄心１は、ティース部４において、積層方向に隣接する電磁鋼板同士がカシメ接合されていない第２平板部８を設けているので、カシメ接合の凸部と凹部の圧入による歪み及び該圧入による応力の影響を抑制できる。よって、この固定子鉄心１は、透磁率の低下を抑制することができ、積層間に発生する渦電流も抑制することができる。 That is, since stator iron core 1 of the present embodiment is provided with second flat plate portion 8 in which electromagnetic steel plates adjacent to each other in the stacking direction are not crimped and joined in teeth portion 4, convexed portions and recessed portions of crimped joint Distortion due to press-in and the influence of stress due to the press-in can be suppressed. Therefore, the stator core 1 can suppress the decrease in the magnetic permeability and can also suppress the eddy current generated between the laminations.
　また、本実施の形態の固定子鉄心１は、コアバック部３の積層幅と、巻線１４の巻回によってテンションが作用したティース部４の積層幅とが略同等となるように、コアバック部３に第１カシメ接合部５と第１平板部６を設け、ティース部４に第２カシメ接合部７と第２平板部８を設けているので、巻線１４の巻縮みを抑制することができる。つまり、この固定子鉄心１は、巻線１４を目標の位置に巻回することができるので、巻き乱れ等の製造不具合を低減することができる。また、この固定子鉄心１は、巻線品質を改善できるので、手直し工数および工程内不良を低減でき、高品質な電動機１００を提供することができる。 Further, in the stator core 1 of the present embodiment, the core back is made so that the lamination width of the core back portion 3 and the lamination width of the teeth portion 4 on which tension acts by the winding of the winding 14 become substantially equal. Since the first crimped joint 5 and the first flat plate 6 are provided in the portion 3 and the second crimped joint 7 and the second flat plate 8 are provided in the tooth 4, suppressing the contraction of the winding 14 Can. That is, since the stator core 1 can wind the winding 14 to the target position, it is possible to reduce manufacturing problems such as winding disorder. Further, since the stator core 1 can improve the winding quality, it is possible to reduce the number of rework steps and defects in the process, and to provide a high quality motor 100.
　また、本実施の形態の固定子鉄心１の第１カシメ接合部５は、積層方向において隣接する電磁鋼板２を複数段連続して設けられた第１カシメ集合体５０として構成されている。また、第２カシメ接合部７は、積層方向において隣接する電磁鋼板２を複数段連続して固定された第２カシメ集合体７０として構成されている。つまり、この固定子鉄心１は、コアバック部３及びティース部４に貫通孔が形成されることに起因する磁気特性の悪化を抑制することができる。 Further, the first crimped joint 5 of the stator core 1 of the present embodiment is configured as a first crimped assembly 50 in which a plurality of electromagnetic steel plates 2 adjacent in the stacking direction are continuously provided. Further, the second crimped joint portion 7 is configured as a second crimped aggregate 70 in which the electromagnetic steel plates 2 adjacent in the stacking direction are continuously fixed in a plurality of stages. That is, the stator core 1 can suppress the deterioration of the magnetic characteristics due to the formation of the through holes in the core back portion 3 and the teeth portion 4.
　また、本実施の形態の固定子鉄心１は、第１カシメ集合体５０の最下段にある第１カシメ接合部５の下方に位置する電磁鋼板２に、該第１カシメ接合部５を嵌め込む第１貫通孔３０が形成されている。また、第２カシメ集合体７０の最下段にある第２カシメ接合部７の下方に位置する電磁鋼板２に、該第２カシメ接合部７を嵌め込む第２貫通孔４０が形成されている。よって、この固定子鉄心１は、最下段に位置する第１カシメ接合部５を第１貫通孔３０に嵌入させることで、第１カシメ接合部５と電磁鋼板２の上面との干渉を防ぐことができ、且つ最下段に位置する第２カシメ接合部７を第２貫通孔４０に嵌入させることで、第２カシメ接合部７と電磁鋼板２の上面との干渉を防ぐことができるので、積層間の隙間の増加を防ぐことができる。 In addition, the stator core 1 of the present embodiment inserts the first crimped joint 5 into the electromagnetic steel sheet 2 located below the first crimped joint 5 at the lowermost stage of the first crimped assembly 50. A first through hole 30 is formed. Further, a second through hole 40 in which the second crimped joint 7 is fitted is formed in the electromagnetic steel plate 2 located below the second crimped joint 7 in the lowermost stage of the second crimped assembly 70. Therefore, the stator core 1 prevents interference between the first crimped joint 5 and the upper surface of the electromagnetic steel plate 2 by inserting the first crimped joint 5 located at the lowermost stage into the first through hole 30. By inserting the second caulking joint 7 located at the lowermost stage into the second through hole 40, interference between the second caulking joint 7 and the upper surface of the electromagnetic steel sheet 2 can be prevented. It is possible to prevent an increase in the gap between them.
　また、本実施の形態の固定子鉄心１は、円環方向に隣接するセグメント１１同士が、隣接するセグメント１１に対して回動自在に連結された連結部１３を有する構成なので、各セグメント１１を回動させることによって、図２とは逆向きの円環状又は直線状等の様々な形状に変化させることができる。よって、この固定子鉄心１は、巻線１４を巻回するための作業スペースを確保することができ、容易に巻線１４を巻回することができる。 In addition, since stator core 1 of the present embodiment has a configuration in which segments 11 adjacent in the annular direction have connecting portions 13 rotatably connected to adjacent segments 11, each segment 11 can be obtained. By turning it, it can be changed into various shapes, such as an annular ring or a straight line opposite to FIG. 2. Therefore, the stator core 1 can secure a working space for winding the winding 14 and can easily wind the winding 14.
　なお、本実施の形態の固定子鉄心１は、円環方向に隣接するセグメント１１同士が溶接されて連結された溶接部１５を有する構成とすることで、ティース部４の内径側の真円度の精度を高めることができ、例えば電動機１００が圧縮機に組み込まれた場合、圧縮機の運転効率の向上に寄与することができる。また、この固定子鉄心１は、部材点数及び加工の手間が少なくて済むので、生産性を向上させることもできる。 In addition, the stator core 1 of the present embodiment has a welded portion 15 in which the segments 11 adjacent to each other in the annular direction are welded and connected, whereby the roundness on the inner diameter side of the teeth portion 4 is achieved. In the case where, for example, the motor 100 is incorporated into a compressor, it can contribute to the improvement of the operating efficiency of the compressor. In addition, since the stator core 1 can reduce the number of parts and the time for processing, productivity can be improved.
　また、本実施の形態の固定子鉄心１は、ティース部４が、絶縁機能を有する紙材又は樹脂シートからなる絶縁材１２によって絶縁処理を施されて巻線１４で巻回された構成なので、巻線１４とティース部４との絶縁が良好となる。 In addition, since stator core 1 of the present embodiment has a configuration in which teeth portion 4 is subjected to an insulating process by insulating material 12 made of a paper material or a resin sheet having an insulating function, and wound by winding 14. The insulation between the winding 14 and the teeth 4 is good.
　以上に本発明を実施の形態に基づいて説明したが、本発明は上述した実施の形態の構成に限定されるものではない。例えば第１カシメ集合体５０を構成する第１カシメ接合部５の個数と、第２カシメ集合体７０を構成する第２カシメ接合部７の個数は、同じでなくてもよい。固定子鉄心１は、コアバック部３の積層幅と、巻線１４の巻回によってテンションＦが作用したティース部４の積層幅とが略同等となればよい。要するに、いわゆる当業者が必要に応じてなす種々なる変更、応用、利用の範囲をも本発明の要旨（技術的範囲）に含むことを念のため申し添える。 Although the present invention has been described above based on the embodiment, the present invention is not limited to the configuration of the embodiment described above. For example, the number of first crimped joints 5 constituting the first crimped assembly 50 and the number of second crimped joints 7 constituting the second crimped assembly 70 may not be the same. In the stator core 1, the lamination width of the core back portion 3 and the lamination width of the teeth portion 4 on which the tension F acts by the winding of the winding 14 may be substantially equal. In short, the scope of the various modifications, applications, and uses that the so-called person skilled in the art makes as needed is mentioned in the scope of the present invention (the technical scope).
　１　固定子鉄心、２　電磁鋼板、３　コアバック部、４　ティース部、５　第１カシメ接合部、６　第１平板部、７　第２カシメ接合部、８　第２平板部、９　カシメ接合部、１０　固定子、１１　セグメント、１２　絶縁材、１３　連結部、１４　巻線、１５　溶接部、２０　回転子、２１　回転子鉄心、２２　永久磁石、２３　軸部、３０　第１貫通孔、４０　第２貫通孔、５０　第１カシメ集合体、７０　第２カシメ集合体、１００　電動機、１００ａ　密閉容器、２００　金型、２０１　カム機構、２０２　成形パンチ。 DESCRIPTION OF SYMBOLS 1 Stator core, 2 electromagnetic steel plate, 3 core back part, 4 teeth part, 5 1st crimp joint part, 6 1st flat plate part, 7 2nd crimp joint part, 8 2nd flat plate part, 9 crimp joint part, 10 Stator, 11 segments, 12 insulators, 13 connections, 14 windings, 15 welds, 20 rotors, 21 rotor cores, 22 permanent magnets, 23 shafts, 30 first through holes, 40 second through holes , 50 first crimp assembly, 70 second crimp assembly, 100 motor, 100a container, 200 mold, 201 cam mechanism, 202 forming punch.

Claims (7)

  1. 　電磁鋼板が複数枚積層されて構成され、円環状のコアバック部と、前記コアバック部から内側に向かって延び、巻線が巻回される複数のティース部と、を備えた固定子鉄心であって、
    　前記コアバック部は、
    　積層方向に隣接する前記電磁鋼板同士がカシメ接合されて固定された第１カシメ接合部と、積層方向に隣接する前記電磁鋼板同士がカシメ接合されていない第１平板部と、が積層方向に沿って交互に配置されて設けられており、
    　前記ティース部には、
    　積層方向に隣接する前記電磁鋼板同士がカシメ接合されて固定された第２カシメ接合部が、前記第１平板部を有している前記電磁鋼板に設けられ、
    　積層方向に隣接する前記電磁鋼板同士がカシメ接合されていない第２平板部が、前記第１カシメ接合部を有している前記電磁鋼板に設けられている、固定子鉄心。     A stator core comprising: a plurality of electromagnetic steel plates laminated; a ring-shaped core back portion; and a plurality of teeth portions extending inwardly from the core back portion and in which a winding is wound. There,
    The core back portion is
    The first crimped joint portion in which the electromagnetic steel plates adjacent to each other in the stacking direction are caulked and fixed, and the first flat plate portion in which the electromagnetic steel plates adjacent to each other in the stacking direction are not caulked And are arranged alternately.
    In the teeth section,
    A second crimped joint portion in which the electromagnetic steel plates adjacent to each other in the stacking direction are caulked and fixed is provided to the electromagnetic steel plate having the first flat plate portion,
    A stator core, wherein a second flat plate portion in which the electromagnetic steel plates adjacent to each other in the stacking direction are not crimped to each other is provided to the electromagnetic steel plate having the first crimped joint.
  2. 　前記第１カシメ接合部は、積層方向において隣接する前記電磁鋼板を複数段連続して設けられた第１カシメ集合体として構成され、
    　前記第２カシメ接合部は、積層方向において隣接する前記電磁鋼板を複数段連続して固定された第２カシメ集合体として構成されている、請求項１に記載の固定子鉄心。     The first crimped joint is configured as a first crimped assembly in which a plurality of the electromagnetic steel plates adjacent in the stacking direction are continuously provided.
    2. The stator core according to claim 1, wherein the second crimped joint is configured as a second crimped assembly in which the electromagnetic steel plates adjacent in the stacking direction are continuously fixed in a plurality of stages.
  3. 　前記第１カシメ集合体の最下段にある前記第１カシメ接合部の下方に位置する前記電磁鋼板には、該第１カシメ接合部を嵌め込む第１貫通孔が形成され、
    　前記第２カシメ集合体の最下段にある前記第２カシメ接合部の下方に位置する前記電磁鋼板には、該第２カシメ接合部を嵌め込む第２貫通孔が形成されている、請求項２に記載の固定子鉄心。     A first through hole into which the first crimped joint is fitted is formed in the electromagnetic steel sheet located below the first crimped joint at the lowermost stage of the first crimped assembly,
    The electromagnetic steel sheet positioned below the second crimped joint at the lowermost level of the second crimped assembly has a second through hole into which the second crimped joint is fitted. Stator core as described in.
  4. 　前記コアバック部は、円環方向に分割した複数のセグメントからなり、
    　円環方向に隣接する前記セグメント同士が、隣接する前記セグメントに対して回動自在に連結された連結部を有している、請求項１～３のいずれか一項に記載の固定子鉄心。     The core back portion is composed of a plurality of segments divided in an annular direction,
    The stator core according to any one of claims 1 to 3, wherein the segments adjacent to each other in the annular direction have couplings rotatably connected to the adjacent segments.
  5. 　前記コアバック部は、円環方向に分割した複数のセグメントからなり、
    　円環方向に隣接する前記セグメント同士が溶接されて連結された溶接部を有している、請求項１～３のいずれか一項に記載の固定子鉄心。     The core back portion is composed of a plurality of segments divided in an annular direction,
    The stator core according to any one of claims 1 to 3, further comprising a welded portion in which the segments adjacent in the annular direction are welded and connected.
  6. 　前記ティース部には、絶縁機能を有する紙材又は樹脂シートからなる絶縁材によって絶縁処理が施されており、
    　前記絶縁処理が施された前記ティース部に前記巻線が巻回されている、請求項１～５のいずれか一項に記載の固定子鉄心。     An insulation treatment is applied to the teeth portion with an insulating material made of a paper material or a resin sheet having an insulating function,
    The stator core according to any one of claims 1 to 5, wherein the winding is wound around the tooth portion subjected to the insulation treatment.
  7. 　請求項１～６のいずれか一項に記載の固定子鉄心を備えた電動機。 A motor comprising the stator core according to any one of claims 1 to 6.
PCT/JP2017/045310 2017-12-18 2017-12-18 Stator core and motor equipped with said stator core WO2019123513A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
PCT/JP2017/045310 WO2019123513A1 (en) 2017-12-18 2017-12-18 Stator core and motor equipped with said stator core
JP2019559878A JP6727458B2 (en) 2017-12-18 2017-12-18 Stator core and electric motor equipped with the stator core
CN201780096571.1A CN111448741A (en) 2017-12-18 2017-12-18 Stator core and motor having the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2017/045310 WO2019123513A1 (en) 2017-12-18 2017-12-18 Stator core and motor equipped with said stator core

Publications (1)

Publication Number Publication Date
WO2019123513A1 true WO2019123513A1 (en) 2019-06-27

Family

ID=66994487

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2017/045310 WO2019123513A1 (en) 2017-12-18 2017-12-18 Stator core and motor equipped with said stator core

Country Status (3)

Country Link
JP (1) JP6727458B2 (en)
CN (1) CN111448741A (en)
WO (1) WO2019123513A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20220120845A (en) 2021-02-24 2022-08-31 현대자동차주식회사 Divided core for motor

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011120392A (en) * 2009-12-04 2011-06-16 Mitsubishi Electric Corp Stator core, stator, motor, and compressor
JP2015142424A (en) * 2014-01-28 2015-08-03 トヨタ自動車株式会社 motor structure
JP2016082627A (en) * 2014-10-10 2016-05-16 トヨタ自動車株式会社 Stator for rotary electric machine
WO2016113876A1 (en) * 2015-01-15 2016-07-21 三菱電機株式会社 Rotating electric machine

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5623498B2 (en) * 2012-12-28 2014-11-12 三菱電機株式会社 Stator core and stator, electric motor and compressor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011120392A (en) * 2009-12-04 2011-06-16 Mitsubishi Electric Corp Stator core, stator, motor, and compressor
JP2015142424A (en) * 2014-01-28 2015-08-03 トヨタ自動車株式会社 motor structure
JP2016082627A (en) * 2014-10-10 2016-05-16 トヨタ自動車株式会社 Stator for rotary electric machine
WO2016113876A1 (en) * 2015-01-15 2016-07-21 三菱電機株式会社 Rotating electric machine

Also Published As

Publication number Publication date
JP6727458B2 (en) 2020-07-22
JPWO2019123513A1 (en) 2020-04-02
CN111448741A (en) 2020-07-24

Similar Documents

Publication Publication Date Title
US20110175485A1 (en) Rotating electrical machine and manufacturing method of a stator thereof
WO2017216995A1 (en) Permanent magnet synchronous machine and method for manufacturing permanent magnet synchronous machine stator
WO2006028179A1 (en) Method for manufacturing laminated core
CN111033980B (en) Divided core connection body and armature manufacturing method
JP5623498B2 (en) Stator core and stator, electric motor and compressor
US20050264123A1 (en) Stator of rotating electric machine and manufacturing method of the stator
CN109075626B (en) Stator core and motor provided with same
JP2010259315A (en) Stator of rotary electric machine
US7282830B2 (en) Stator for an electrical machine
US11411447B2 (en) Axial gap motor
CN111418131B (en) Stator core
US20190036390A1 (en) Stator for rotating electric machine, and rotating electric machine
JP2007221927A (en) Stator core of rotating electric machine and method of manufacturing same
US11228226B2 (en) Electric machine comprising a knurled rotor shaft and method of manufacturing such a machine
WO2019123513A1 (en) Stator core and motor equipped with said stator core
WO2014136145A1 (en) Stator core of rotating machine, rotating machine and method for manufacturing same
JP5244363B2 (en) Split stator and motor
JP5462643B2 (en) Laminated iron core and method for manufacturing the same
CN111279584B (en) Armature core of rotating electric machine and method for manufacturing armature core of rotating electric machine
JP2017005785A (en) Stator, motor and manufacturing method of stator
JP5335633B2 (en) Rotating electric machine and method of manufacturing rotating electric machine
JP5109737B2 (en) Method for manufacturing split stator core
JP7229402B2 (en) Armature manufacturing method and armature
JP7084451B2 (en) Stator core and motor
US11870304B2 (en) Rotary electric machine with tubular housing and flange

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 17935607

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2019559878

Country of ref document: JP

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 17935607

Country of ref document: EP

Kind code of ref document: A1