WO2023062945A1 - 電機子の製造方法および電機子 - Google Patents
電機子の製造方法および電機子 Download PDFInfo
- Publication number
- WO2023062945A1 WO2023062945A1 PCT/JP2022/031609 JP2022031609W WO2023062945A1 WO 2023062945 A1 WO2023062945 A1 WO 2023062945A1 JP 2022031609 W JP2022031609 W JP 2022031609W WO 2023062945 A1 WO2023062945 A1 WO 2023062945A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- insulating member
- end surface
- bending
- tooth
- surface covering
- Prior art date
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000005452 bending Methods 0.000 claims abstract description 51
- 238000004804 winding Methods 0.000 claims abstract description 37
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000002844 melting Methods 0.000 claims description 4
- 230000008018 melting Effects 0.000 claims description 4
- 230000009477 glass transition Effects 0.000 claims description 3
- 238000009413 insulation Methods 0.000 abstract 4
- 238000003825 pressing Methods 0.000 description 12
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 2
- 239000004734 Polyphenylene sulfide Substances 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 229920000069 polyphenylene sulfide Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/32—Windings characterised by the shape, form or construction of the insulation
- H02K3/34—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/14—Stator cores with salient poles
- H02K1/146—Stator cores with salient poles consisting of a generally annular yoke with salient poles
- H02K1/148—Sectional cores
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/02—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
- H02K15/021—Magnetic cores
- H02K15/022—Magnetic cores with salient poles
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/08—Forming windings by laying conductors into or around core parts
- H02K15/095—Forming windings by laying conductors into or around core parts by laying conductors around salient poles
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/12—Impregnating, moulding insulation, heating or drying of windings, stators, rotors or machines
-
- 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
Definitions
- the present invention relates to an armature manufacturing method and an armature.
- an armature manufacturing method and an armature provided with an insulating member arranged in a core are known.
- Such an armature is disclosed, for example, in JP-A-2018-125898.
- the rotor (armature) described in JP-A-2018-125898 includes windings, a rotor core, and an insulating member arranged between the windings and the rotor core.
- the insulating member includes an end surface covering portion that covers one axial end surface of the tooth portion, a side surface covering portion that covers the side surface of the tooth portion, and protrudes from the other axial end surface of the tooth portion toward the other axial side. a tip adapted to do so.
- the tip portion is provided with an engaging portion that protrudes toward the end portion side of the tooth portion and engages with the other end surface of the tooth portion. The axial movement of the insulating member is restricted by the engagement between the end surfaces of the teeth and the engaging portions.
- the insulating member is provided with an engaging portion that engages with the end face of the tooth portion. Therefore, the shape of the insulating member becomes complicated. Therefore, there is a demand for an armature manufacturing method and an armature that can simplify the shape of the insulating member while restricting the axial movement of the insulating member.
- the present invention has been made to solve the above problems, and one object of the present invention is to simplify the shape of an insulating member while restricting axial movement of the insulating member. It is to provide a possible armature manufacturing method and armature.
- a method for manufacturing an armature in which side surfaces of tooth portions of a core including a plurality of radially extending tooth portions are covered with an insulating member, and an insulating member arranging step of arranging an insulating member with respect to the core so that a first portion of the insulating member protrudes from an end face on one axial side of the tooth portion to one axial side;
- a bending step of bending the first portion of the insulating member protruding from the end surface toward the tooth portion, and winding winding of winding the winding around each of the plurality of tooth portions on which the first portion in the bent state is arranged. and a step.
- the first portion of the insulating member protruding from the end face on one side of the tooth portion is bent toward the tooth portion.
- the first portion bent toward the tooth portion engages with the tooth portion, thereby restricting the movement of the insulating member in the axial direction.
- the movement of the insulating member in the axial direction can be restricted only by bending the first portion without forming an engaging portion that engages with the core in advance in the first portion.
- the structure of the insulating member can be simplified because it is not necessary to provide the engaging portion on the insulating member.
- the shape of the insulating member can be simplified while restricting the movement of the insulating member in the axial direction.
- the armature according to the second aspect of the present invention is arranged between a winding, a core including a plurality of teeth on which the winding is wound and extending along the radial direction, and the core and the winding.
- the insulating member is provided so as to cover the side surface of the tooth portion and one end surface of the tooth portion in the axial direction, and the insulating member covers the one end surface of the tooth portion. is provided so as to cover the end face on one side by being bent toward the teeth portion.
- the portion of the insulating member that covers the end face on one side of the tooth portion is bent toward the tooth portion so as to cover the end face on the one side. is provided in As a result, the portion of the insulating member bent toward the tooth portion engages with the tooth portion, so that axial movement of the insulating member can be restricted. Further, the movement of the insulating member in the axial direction can be restricted only by bending the portion without forming an engaging portion that engages with the core in advance. As a result, the structure of the insulating member can be simplified because it is not necessary to provide the engaging portion on the insulating member. As a result, it is possible to provide an armature capable of simplifying the shape of the insulating member while restricting axial movement of the insulating member.
- the shape of the insulating member can be simplified while restricting axial movement of the insulating member.
- FIG. 4 is a plan view showing the configuration of a stator according to one embodiment
- FIG. FIG. 2 is an enlarged perspective view of the vicinity of one tooth portion in FIG. 1
- Figure 200 is a cross-sectional view along line 200-200 of Figure 1
- FIG. 3 is a perspective view of an insulating member according to one embodiment
- FIG. 4 is a flow diagram illustrating a method of manufacturing a stator according to one embodiment
- FIG. 4 is a perspective view showing a process of arranging an insulating member on a stator core according to one embodiment
- FIG. 4 is a cross-sectional view showing the state of the insulating member before a bending process according to one embodiment
- It is a sectional view showing a bending process by one embodiment.
- Stator 100 is a stator of a rotating electrical machine configured as a motor or generator.
- the stator 100 is an example of the "armature" in the claims.
- the “axial direction” is the Z direction (Z1 direction, Z2 direction)
- the “circumferential direction” is the E direction (E1 direction, E2 direction)
- the “radial direction” is the R direction (R1 direction, R2 direction).
- stator 100 includes stator core 10 , windings 20 (see FIG. 3 ), and insulating member 30 .
- the insulating member 30 is arranged between the stator core 10 and the windings 20 . That is, the insulating member 30 insulates the stator core 10 and the windings 20 .
- the windings 20 are omitted except in FIG.
- the stator core 10 is an example of the "core" in the claims.
- the stator core 10 includes a plurality (12 in this embodiment) of teeth 11 extending in the radial direction (R direction).
- Stator core 10 also includes a plurality of slots 12 provided between adjacent tooth portions 11 in the circumferential direction (E direction).
- the slot 12 is a semi-open slot that is open radially inward.
- Stator core 10 also includes an annular back yoke portion 13 that connects a plurality of teeth portions 11 to each other.
- Each of the plurality of teeth portions 11 is provided so as to protrude radially inward (R1 side) from the back yoke portion 13 .
- the stator 100 is a stator of an inner rotor type brushless motor.
- a winding 20 is wound a plurality of times around each of the teeth 11 (see FIG. 3).
- the back yoke portion 13 is an example of the "yoke portion" in the claims.
- the insulating member 30 is provided so as to cover the side surface 11a (see FIG. 3) of the tooth portion 11 and the end surface 11b on one side (Z1 side) of the tooth portion 11 in the axial direction.
- the insulating member 30 includes side surface covering portions 31 that cover the side surfaces 11 a on both sides in the circumferential direction (E direction) of each of the plurality of teeth portions 11 .
- the insulating member 30 also includes an end surface covering portion 32 that covers the Z1 side end surface 11b of each of the plurality of teeth 11 .
- the side surface covering portion 31 and the end surface covering portion 32 are connected to each other.
- the end surface covering portion 32 is an example of the "first portion" and the "part" in the claims.
- the insulating member 30 is made of resin such as 66 nylon or PPS (polyphenylene sulfide).
- each of the pair of side surfaces 11 a of the tooth portion 11 is covered with a side surface covering portion 31 . That is, the side surfaces 11 a of the plurality of tooth portions 11 are covered with a pair of side surface covering portions 31 .
- the end face covering portion 32 is provided so as to extend from each of the pair of side face covering portions 31 along the end face 11b on the Z1 side. That is, the end surfaces 11 b of the plurality of teeth 11 are covered with a pair of end surface covering portions 32 .
- the end surface covering portion 32 is provided so as to cover the end surface 11b by being bent toward the tooth portion 11 side.
- the end surface covering portion 32 of the insulating member 30 bent toward the tooth portion 11 engages with the tooth portion 11, so that axial movement of the insulating member 30 can be restricted.
- the movement of the insulating member 30 in the axial direction can be restricted only by bending the end surface covering portion 32 without forming an engaging portion that engages with the stator core 10 in the end surface covering portion 32 in advance.
- the structure of the insulating member 30 can be simplified because the insulating member 30 does not need to be provided with an engaging portion.
- each of the pair of end face covering portions 32 provided on each of the plurality of tooth portions 11 is bent toward the corresponding tooth portion 11 side.
- a gap 33 is provided between the pair of end surface covering portions 32 . That is, the circumferential width W1 of the end face covering portion 32 is smaller than half the circumferential width W2 of the tooth portion 11 .
- the width W1 of the end surface covering portion 32 is, for example, approximately 0.5 mm to 4 mm.
- the width W1 of the end surface covering portion 32 is large enough to restrict axial movement of the tooth portion 11 .
- the insulating member 30 also includes an end surface covering portion 34 that covers the end surface 11c of each of the teeth portions 11 on the other side (Z2 side) in the axial direction.
- the end surface covering portion 34 is connected to each of the pair of side surface covering portions 31 covering the side surface 11 a of the tooth portion 11 .
- the insulating member 30 also includes a yoke-side covering portion 35 arranged along the back yoke portion 13 .
- the yoke-side covering portion 35 is provided so as to cover the radially outer side surfaces 12 a (see FIG. 1 ) of the plurality of slots 12 .
- Each of the plurality of yoke-side covering portions 35 is provided with a protruding portion 35a protruding from the end surface 13a (see FIG. 2) on one axial side (Z1 side) of the back yoke portion 13 to one axial side.
- the protruding portion 35a is provided so as to be adjacent to the end surface covering portion 32.
- the end surface 13a of the back yoke portion 13 and the end surface 11b of the tooth portion 11 are flush with each other.
- the projecting portion 35a is an example of the "second portion" in the scope of claims.
- a slit 36 is provided between the end face covering portion 32 and the projecting portion 35a.
- the end surface covering portion 32 and the projecting portion 35a are separated from each other by a slit 36.
- the slits 36 are provided on both sides in the circumferential direction (direction E) of the projecting portion 35a.
- the side covering portion 31 and the yoke side covering portion 35 are connected to each other.
- the insulating member 30 also includes opening side portions 37 provided on both sides in the circumferential direction (E direction) of the radially inner openings 12b (see FIG. 1) of each of the plurality of slots 12 .
- the opening side portion 37 restricts movement of the winding 20 (see FIG. 3) wound around the tooth portion 11 radially inward (R1 side).
- the minimum value of the thickness t1 in the circumferential direction (direction E) of the opening side portion 37 is greater than the thickness t2 in the circumferential direction of the side surface covering portion 31 (see FIG. 3).
- a thickness t2 of the side surface covering portion 31 is, for example, about 0.1 mm to 1 mm.
- Each of the plurality of opening side portions 37 is provided with a protruding portion 37a that protrudes from the end surface 11b of the tooth portion 11 toward one side (Z1 side) in the axial direction.
- the projecting portion 37a is provided so as to be adjacent to the end surface covering portion 32 in the radial direction (R1 direction).
- the projection length L1 of the projecting portion 35a of the yoke-side covering portion 35 from the end surface 13a of the back yoke portion 13 is substantially equal to the projection length L2 of the projecting portion 37a from the end surface 11b of the tooth portion 11.
- FIG. Note that the protrusion length L1 and the protrusion length L2 are smaller than the width W1 (see FIG. 3) of the end surface covering portion 32 .
- a slit 38 is provided between the protruding portion 37a of the opening side portion 37 and the end surface covering portion 32, which are provided adjacent to each other in the radial direction.
- the end surface covering portion 32 and the projecting portion 37a are separated from each other by a slit 38. As shown in FIG. Note that the side covering portion 31 and the opening side portion 37 are connected to each other.
- the insulating member 30 is such that portions provided on each of the plurality of teeth portions 11 are connected to each other. That is, the insulating member 30 is a single member formed in an annular shape.
- step S1 an insulating member arranging step of arranging the insulating member 30 on the stator core 10 is performed.
- the insulating member arranging step (S1) is a step of arranging the insulating member 30 on the stator core 10 from the other side (Z2 side) in the axial direction. Specifically, as shown in FIG. 6, the insulating member 30 is moved toward the stator core 10 (Z1 side) with the end surface covering portion 32 of the insulating member 30 directed toward the Z1 side. Note that the stator core 10 may be moved toward the insulating member 30 (Z2 side).
- the insulating member 30 is arranged on the stator core 10 so that the protruding portion 35a protrudes from the end surface 13a of the back yoke portion 13 to one side (Z1 side) in the axial direction (see FIG. 2). It is a step of arranging in
- the projection length L3 ( 7) is arranged on the stator core 10 so that the insulating member 30 is increased.
- the area covered by the end surface covering portion 32 on the end surface 11b of the tooth portion 11 can be increased, and compared to the case where the projection length L1 of the projection portion 35a is equal to or greater than the projection length L3 of the end surface covering portion 32, It is possible to prevent the axial length of the insulating member 30 from becoming too large.
- the end surface covering portion 32 is provided so as to extend along the axial direction (Z direction) when the insulating member 30 is arranged on the stator core 10 . That is, the protruding length L3 of the end surface covering portion 32 is substantially equal to the width W1 of the end surface covering portion 32 (see FIG. 3).
- step S2 a bending step is performed to bend the end surface covering portion 32 toward the tooth portion 11 side.
- the end surface covering portion 32 bent toward the tooth portion 11 engages with the tooth portion 11, so that axial movement of the insulating member 30 can be restricted.
- the movement of the insulating member 30 in the axial direction can be restricted only by bending the end surface covering portion 32 without forming an engaging portion that engages with the stator core 10 in the end surface covering portion 32 in advance.
- the structure of the insulating member 30 can be simplified because the insulating member 30 does not need to be provided with an engaging portion.
- the shape of the insulating member 30 can be simplified while restricting axial movement of the insulating member 30 .
- the shape of the insulating member 30 is simplified, the shape of the mold for forming the insulating member 30 can be simplified. Further, since the insulating member 30 is not provided with an engaging portion that engages with the end face 11b of the stator core 10, when the insulating member 30 is arranged (assembled) to the stator core 10 from the other side in the axial direction, the stator core 10 and Interference with the insulating member 30 can be reduced. As a result, the insulating member 30 can be easily arranged on the stator core 10 .
- the end surface covering portion 32 is provided so as to extend along the axial direction. , the end surface covering portion 32 can be prevented from being caught on the winding 20 .
- the punch member 300 presses the end surface covering portion 32 from one side (Z1 side) in the axial direction, thereby displacing the end surface covering portion 32 from the tooth portion 11. This is the process of folding to the side.
- the punch member 300 is provided with a flat pressing surface 301 that presses the end face covering portion 32 .
- a pair of end surface covering portions 32 provided on both sides in the circumferential direction of the tooth portion 11 are simultaneously bent by the pressing surface 301 .
- the punch member 300 is provided with restricting portions 302 that are provided on both sides in the circumferential direction (direction E) of the pressing surface 301 and extend along the axial direction.
- the restricting portion 302 moves along the side surface covering portion 31 toward the Z2 side.
- the restricting portion 302 restricts the punch member 300 from moving in the circumferential direction.
- the punch member 300 is an annular member. That is, the end surface covering portions 32 of the plurality of teeth portions 11 are bent all at once by the annular punch member 300 (pressing surface 301). Note that the end surface covering portion 32 may be bent for each tooth portion 11 by a punch member.
- the bending step (S2) is a step of plastically deforming the end face covering portion 32 by bending the end face covering portion 32 while heating it.
- the end surface covering portion 32 can be softened by heating the end surface covering portion 32, so that the end surface covering portion 32 can be easily bent with a relatively small force.
- the bent end surface covering portion 32 can be prevented from returning to its original shape. can be reliably prevented.
- the bending step (S2) is a step of bending the end surface covering portion 32 while heating it by pressing the end surface covering portion 32 with the heated punch member 300 .
- the bending step (S2) is a step of bending while heating the end surface covering portion 32 so that the temperature of the end surface covering portion 32 is equal to or higher than the glass transition point of the insulating member 30 and less than the melting point of the insulating member 30. That is, when the end surface covering portion 32 made of resin is heated to a glass transition point or higher, it is transformed from a hard glass state to a soft rubber state.
- the end surface covering portion 32 becomes flexible, so that the end surface covering portion 32 can be easily bent with a relatively small force. Moreover, since the temperature of the end face covering portion 32 is lower than the melting point of the insulating member 30, the end face covering portion 32 can be prevented from melting.
- the bending step (S2) is a step of bending the end surface covering portion 32 to bring the end surface covering portion 32 into surface contact with the teeth portion 11 and to adhere them closely.
- the bending step (S2) is a step of pressing the end surface covering portion 32 against the end surface 11b by the pressing surface 301 of the flat punch member 300, like the end surface 11b of the tooth portion 11.
- each of the pair of end surface covering portions 32 is bent toward the tooth portion 11 side, and the gap 33 (see FIG. 3) is formed between the pair of end surface covering portions 32.
- each of the pair of end surface covering portions 32 is bent toward the tooth portion 11 side.
- each of the pair of end surface covering portions 32 projecting from the end surface 11b by a projecting length L3 which is less than 1/2 of the width W2 in the circumferential direction of the tooth portion 11 is bent. This is the step of bending to the 11 side.
- the bending step (S2) is a step of bending the end surface covering portion 32 without bending the projecting portion 35a of the yoke side covering portion 35.
- the protruding portion 35a extends along the axial direction without being bent. can be wound.
- the work of winding the wire 20 around the teeth 11 can be facilitated.
- the pressure applied by the punch member 300 can be reduced as compared with the case where both the end surface covering portion 32 and the projecting portion 35a are bent. As a result, equipment for driving the punch members 300 can be made compact.
- the bending step (S2) is a step of bending the end surface covering portion 32 without bending the protruding portion 37a of the opening side portion 37. That is, the bending step (S2) is a step of applying pressure by the punch members 300 in a state in which the punch members 300 are in contact with the end surface covering portion 32 without contacting the projecting portions 35a and 37a.
- step S3 winding 20 (see FIG. 3) is wound around each of the plurality of tooth portions 11 on which the end face covering portions 32 are arranged in a folded state.
- the winding winding step ( S ⁇ b>3 ) is a step of winding the winding wire 20 around the tooth portion 11 while the end surface covering portion 32 is in close contact with the end surface 11 b of the tooth portion 11 .
- the winding winding step (S3) after cooling the temperature of the end surface covering portion 32 heated in the bending step (S2) to room temperature, the winding 20 is wound on the tooth portion 11 from above the end surface covering portion 32. This is the process of turning.
- the end face covering portion 32 (first portion, portion) is heated and bent is shown, but the present invention is not limited to this.
- the end surface covering portion 32 may be bent without being heated.
- ABS, PE (polyethylene), PP (polypropylene), or the like is used as the insulating member 30 .
- the present invention is directed to this.
- the edge covering portion 32 may be bent by the punch member 300 while the edge covering portion 32 is directly heated by laser or infrared rays.
- the punch member 300 may or may not be heated.
- the pair of end surface covering portions 32 (first portion, portion) is bent so as to form a gap 33 between the pair of end surface covering portions 32 (first portion, portion).
- the pair of end surface covering portions 32 may be bent so that no gap is formed between the pair of end surface covering portions 32 (so that the pair of end surface covering portions 32 overlap each other).
- the end face covering portion 32 (first portion, portion) is bent without bending the projecting portion 35a (second portion) of the yoke side covering portion 35, but the present invention is limited to this.
- the protruding portion 35 a may be bent together with the end surface covering portion 32 .
- the slit 36 may not be provided.
- the end surface covering portion 32 is bent without bending the projecting portion 37a of the opening side portion 37, but the projecting portion 37a may be bent together with the end surface covering portion 32.
- the slit 38 may not be provided.
- the projecting length L3 of the end surface covering portion 32 (first portion) from the end surface 11b is longer than the projecting length L1 of the projecting portion 35a (second portion) from the end surface 13a.
- the protrusion length L3 may be equal to or less than the protrusion length L1.
- an example of an inner rotor type brushless motor in which the tooth portions 11 protrude radially inward from the back yoke portion 13 (yoke portion) is shown, but the present invention is not limited to this.
- the present invention may be applied to a stator of an outer rotor type brushless motor or a rotor of a brush motor in which the tooth portions 11 protrude radially outward from the yoke portion.
- the present invention is not limited to this.
- the pressing surface of the punch member that bends the end surface covering portion 32 may be inclined with respect to the end surface 11 b of the tooth portion 11 .
- the pressing surface of the punch member may be curved (for example, curved convexly toward the Z1 side).
- the insulating member 30 is a single annular member, but the present invention is not limited to this.
- An insulating member separate from each other may be provided for each tooth portion 11 .
- the insulating member 30 does not have to include the end surface covering portion 34 connected to each of the pair of side surface covering portions 31 .
- the insulating member 30 is insulated from the one side (Z1 side) in the axial direction with respect to the stator core 10.
- the member 30 may be arranged, or the insulating member 30 may be arranged radially inside the stator core 10 .
- Stator core 11... Teeth part 11a... Side surface 11b... End face (end face of tooth part) 13... Back yoke part (yoke part) 13a... End face (end face of yoke part) 20... Winding , 30... Insulating member, 32... End face covering portion (first portion) (part), 33... Gap, 35a... Protruding portion (second portion), 36... Slit, 100... Stator (armature), L1... Protruding length length (projection length of the second portion), L3 ... projection length (projection length of the first portion)
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Insulation, Fastening Of Motor, Generator Windings (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
Description
図1に示すように、ステータ100は、ステータコア10と、巻線20(図3参照)と、絶縁部材30と、を備える。絶縁部材30は、ステータコア10と巻線20との間に配置されている。すなわち、絶縁部材30は、ステータコア10と巻線20とを絶縁している。なお、図3以外では、簡略化のため、巻線20の図示は省略されている。また、ステータコア10は、請求の範囲の「コア」の一例である。
次に、図5~図8を参照して、ステータ100の製造方法を説明する。
図5に示すように、まず、ステップS1において、絶縁部材30をステータコア10に配置する絶縁部材配置工程が行われる。絶縁部材配置工程(S1)は、ステータコア10に対して軸方向の他方側(Z2側)から絶縁部材30を配置する工程である。具体的には、図6に示すように、絶縁部材30の端面被覆部32がZ1側に向けられた状態で、絶縁部材30がステータコア10側(Z1側)に移動される。なお、ステータコア10を絶縁部材30側(Z2側)に移動させてもよい。
なお、今回開示された実施形態は、すべての点で例示であって制限的なものではないと考えられるべきである。本発明の範囲は、上記した実施形態の説明ではなく請求の範囲によって示され、さらに請求の範囲と均等の意味および範囲内でのすべての変更(変形例)が含まれる。
Claims (10)
- 径方向に沿って延びる複数のティース部を含むコアの前記ティース部の側面が絶縁部材により覆われ、かつ、前記ティース部の軸方向の一方側の端面から前記軸方向の一方側に前記絶縁部材の第1部分が突出するように、前記コアに対して前記絶縁部材を配置する絶縁部材配置工程と、
前記ティース部の前記一方側の端面から突出する前記絶縁部材の前記第1部分を、前記ティース部側に折り曲げる折り曲げ工程と、
折り曲げられた状態の前記第1部分が配置された前記複数のティース部の各々に巻線を巻回する巻線巻回工程と、を備える、電機子の製造方法。 - 前記折り曲げ工程は、前記コアに対して前記軸方向の他方側から前記絶縁部材を配置する工程である、請求項1に記載の電機子の製造方法。
- 前記折り曲げ工程は、前記第1部分を加熱しながら折り曲げることによって、前記第1部分を塑性変形させる工程である、請求項1に記載の電機子の製造方法。
- 前記折り曲げ工程は、前記第1部分の温度が前記絶縁部材のガラス転移点以上でかつ前記絶縁部材の融点未満になるように、前記第1部分を加熱しながら折り曲げる工程である、請求項3に記載の電機子の製造方法。
- 前記折り曲げ工程は、前記第1部分を折り曲げることによって、前記ティース部に前記第1部分を面接触させるとともに密着させる工程である、請求項1に記載の電機子の製造方法。
- 前記折り曲げ工程は、前記ティース部の周方向の両側に設けられる一対の前記第1部分の各々が前記ティース部側に折り曲げられた状態で前記一対の第1部分同士の間に隙間が形成されるように、前記一対の第1部分の各々を前記ティース部側に折り曲げる工程である、請求項1に記載の電機子の製造方法。
- 前記絶縁部材配置工程は、前記絶縁部材が前記コアに配置された状態で、前記複数のティース部同士を接続する前記コアの円環状のヨーク部に沿って配置され、前記第1部分と隣り合うように設けられる前記絶縁部材の第2部分が、前記ヨーク部の前記軸方向の一方側の端面から前記軸方向の一方側に突出するように、前記絶縁部材を前記コアに配置する工程であり、
前記折り曲げ工程は、前記第2部分を折り曲げずに、前記第1部分を折り曲げる工程である、請求項1に記載の電機子の製造方法。 - 前記折り曲げ工程は、前記第1部分と前記第2部分との間に設けられるスリットにより互いに分離されている前記第1部分および前記第2部分のうち、前記第2部分を折り曲げずに、前記第1部分を折り曲げる工程である、請求項7に記載の電機子の製造方法。
- 前記絶縁部材配置工程は、前記ヨーク部の前記一方側の端面からの前記第2部分の突出長さよりも、前記ティース部の前記一方側の端面からの前記第1部分の突出長さが大きくなるように、前記絶縁部材を前記コアに配置する工程である、請求項7に記載の電機子の製造方法。
- 巻線と、
前記巻線が巻回されるとともに径方向に沿って延びる複数のティース部を含むコアと、
前記コアと前記巻線との間に配置される絶縁部材と、を備え、
前記絶縁部材は、前記ティース部の側面と、前記ティース部の軸方向の一方側の端面とを覆うように設けられており、
前記ティース部の前記一方側の端面を覆う前記絶縁部材の部分は、前記ティース部側に折り曲げられていることにより、前記一方側の端面を覆うように設けられている、電機子。
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