WO2022044356A1 - Dispositif d'insertion de coin - Google Patents

Dispositif d'insertion de coin Download PDF

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Publication number
WO2022044356A1
WO2022044356A1 PCT/JP2020/047550 JP2020047550W WO2022044356A1 WO 2022044356 A1 WO2022044356 A1 WO 2022044356A1 JP 2020047550 W JP2020047550 W JP 2020047550W WO 2022044356 A1 WO2022044356 A1 WO 2022044356A1
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WO
WIPO (PCT)
Prior art keywords
wedge
guide
axial direction
stator core
insertion device
Prior art date
Application number
PCT/JP2020/047550
Other languages
English (en)
Japanese (ja)
Inventor
歩 橋本
湧泉 金中
Original Assignee
日本電産株式会社
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 日本電産株式会社 filed Critical 日本電産株式会社
Priority to CN202080103635.8A priority Critical patent/CN115997331A/zh
Publication of WO2022044356A1 publication Critical patent/WO2022044356A1/fr

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/10—Applying solid insulation to windings, stators or rotors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/46—Fastening of windings on the stator or rotor structure
    • H02K3/48—Fastening of windings on the stator or rotor structure in slots
    • H02K3/487—Slot-closing devices

Definitions

  • the present invention relates to a wedge insertion device.
  • a wedge insertion device that inserts a wedge between the coil and the stator core in order to insulate the coil inserted into the slot of the stator core and the stator core.
  • Patent Document 1 Japanese Patent Application Laid-Open No. 2015-233567
  • a slot paper is arranged on the inner surface of a slot, and the slot paper guides a wedge in a stator having a cuff portion that protrudes from an end surface of a stator core and is folded back.
  • a winding wedge inserter is disclosed that comprises a wedge guide, the wedge guide having a protrusion arranged between cuffs in a slot paper adjacent to the tip.
  • An object of the present invention is to provide a wedge insertion device that suppresses buckling of a wedge.
  • the wedge insertion device from the first aspect of the present invention penetrates in the axial direction of the stator core, and inserts a wedge arranged between the coil inserted into the slot and the stator core into the slot in which the insulating paper is arranged.
  • a wedge insertion device that inserts from one side in one direction toward the other side, and includes a wedge guide that is arranged on one side in the axial direction of the stator core and is arranged between adjacent slots.
  • the wedge guide is on the other side in the axial direction. It has a first guide having a tip portion arranged at the end portion, and a second guide for accommodating the tip portion at the end surface on one side in the axial direction of the stator core.
  • the present invention can provide a wedge insertion device that suppresses buckling of a wedge.
  • FIG. 1 is a schematic cross-sectional view perpendicular to the axial direction of the stator.
  • FIG. 2 is a schematic view of the wedge insertion device and the stator core of the embodiment.
  • FIG. 3 is a schematic view of the wedge insertion device and the stator core of the embodiment.
  • FIG. 4 is a schematic view of the wedge insertion device and the stator core of the embodiment.
  • FIG. 5 is a schematic view of the wedge insertion device and the stator core of the embodiment.
  • 6 (A) to 6 (C) are schematic views of the wedge insertion device and the stator core of the embodiment.
  • FIG. 7 is a schematic view of the wedge insertion method and the coil insertion method of the embodiment.
  • FIG. 8 is a schematic view of the wedge insertion method and the coil insertion method of the embodiment.
  • FIG. 9 is a schematic view of the wedge insertion method and the coil insertion method of the embodiment.
  • FIG. 10 is a schematic view of the wedge insertion method and the coil insertion method of the embodiment.
  • FIG. 11 is a schematic diagram of the wedge insertion method and the coil insertion method of the embodiment.
  • FIG. 12 is a flowchart of the wedge insertion method and the coil insertion method of the embodiment.
  • FIG. 13 is a schematic view of a wedge insertion device and a coil insertion device of a modified example, and corresponds to FIG. 8.
  • the direction in which the central axis of the stator 1 extends is referred to as the "axial direction".
  • One side along the axial direction is the upper (front) side, and the other side is the lower (rear) side.
  • the vertical (front-back) direction is used to specify the positional relationship, and does not limit the actual direction. That is, the downward direction does not necessarily mean the direction of gravity.
  • the axial direction is not particularly limited, and includes a vertical direction, a horizontal direction, a direction intersecting these directions, and the like.
  • the direction orthogonal to the central axis of the stator 1 is defined as the "diameter direction”. Further, the direction along the arc centered on the central axis of the stator 1 is defined as the "circumferential direction”.
  • the stator 1 is a component of a motor and interacts with a rotor (not shown) to generate rotational torque.
  • the stator 1 of the present embodiment is a distributed winding in which the coil 10 is wound across several slots 21.
  • the stator 1 includes a coil 10, a stator core 20, a wedge 30, and an insulating paper 40.
  • the stator core 20 is formed in a hollow cylindrical shape.
  • the stator core 20 is formed by stacking thin silicon steel plates.
  • a plurality of teeth 23 are radially formed on the stator core 20.
  • a slot 21 is formed between the teeth 23.
  • the teeth 23 extend radially through the slot 21.
  • a slot open 22 which is a radial opening is formed in the slot 21.
  • the stator core 20 of the present embodiment is an integrated stator core.
  • the coil 10 is formed by winding a coil wire in an annular shape.
  • the coil wire of the present embodiment is a round wire, but is not particularly limited, and may be a flat wire or the like.
  • the coil 10 has two coil side portions and a coil crossing portion.
  • the two coil sides are housed in the slot 21.
  • the slot 21 in which one coil side portion is housed and the slot 21 in which the other coil side portion is housed are different.
  • the slot 21 in which one coil side portion is housed and the slot 21 in which the other coil side portion is housed may be arranged in the circumferential direction via another slot and are adjacent to each other. May be (not shown).
  • the wedge 30 is arranged between the coil 10 inserted in the slot 21 and the stator core 20.
  • the wedge 30 is arranged between the coil 10 and the slot open 22.
  • the wedge 30 closes the slot open 22.
  • the wedge 30 insulates the stator core 20 and the coil 10.
  • the axial length of the wedge 30 is larger than the axial length of the slot 21.
  • the wedge 30 of this embodiment has a U-shape in the axial direction.
  • a circumferential portion 31 extending in the circumferential direction and two radial portions 32 extending radially outward from both end portions of the circumferential portion 31 are included.
  • the circumferential portion 31 and the radial portion 32 may be composed of one member, or different members may be connected to each other.
  • the insulating paper 40 covers the coil 10 inserted into the slot 21.
  • the insulating paper 40 is arranged along the teeth that partition the space excluding the radial inside in the slot 21.
  • the insulating paper 40 of this embodiment has a U-shape.
  • a circumferential portion 41 extending in the circumferential direction and two radial portions 42 extending radially inward from both end portions of the circumferential portion 41 are included.
  • the opening of the insulating paper 40 and the opening of the wedge 30 are in opposite directions.
  • the insulating paper 40 has a cuff portion 43 that protrudes from the end surface 20a on one side in the axial direction of the stator core 20 and is folded back.
  • the insulating paper 40 may further have a cuff portion (not shown) that protrudes from the end face on the other side in the axial direction of the stator core 20 and is folded back.
  • FIGS. 1 to 11 show a step of guiding the wedge 30 to the slot 21, and the steps are carried out in the order of FIGS. 2 to 5.
  • FIGS. 6 (A) to 6 (C) corresponds to FIGS. 2 to 4, and schematically shows the inside of the second guide 240.
  • 7 to 11 show a step of inserting the wedge 30 and the coil 10 into the slot 21, and are carried out in the order of FIGS. 7 to 11.
  • FIG. 8 is also a schematic view of the coil insertion device 100 including the wedge insertion device 200. 2 and 7 show the same process, FIGS. 5 and 8 show the same process, and FIGS. 10 and 11 show the same process.
  • the wedge insertion device 200 inserts the wedge 30 into the slot 21 from one side in the axial direction to the other side (from the right side to the left side in FIG. 3).
  • the slot 21 penetrates the stator core 20 in the axial direction, and the insulating paper 40 is arranged.
  • the wedge 30 is arranged between the coil 10 inserted in the slot 21 and the stator core 20.
  • the wedge insertion device 200 inserts the wedge 30 into each of the plurality of slots 21 of the stator core 20.
  • the wedge insertion device 200 includes a wedge guide 220 shown in FIGS. 2 to 6 and a wedge support mechanism 210 shown in FIGS. 7 to 11.
  • the wedge insertion device 200 of the present embodiment does not include a wedge pusher.
  • the wedge guide 220 accommodates the wedge 30.
  • the wedge guide 220 guides the wedge 30 to the slot 21.
  • the wedge guide 220 is arranged on one side in the axial direction of the stator core 20 and is arranged between adjacent slots 21.
  • the wedge guide 220 extends axially.
  • the wedge guide 220 has a first guide 230 and a second guide 240.
  • the second guide 240 is arranged on one side in the axial direction with respect to the first guide 230.
  • the first guide 230 and the second guide 240 are made of different members and are connected to each other.
  • the first guide 230 has a main body portion 231 and a tip portion 232.
  • the main body portion 231 and the tip portion 232 may be composed of different members, but in the present embodiment, they are composed of one member.
  • the main body portion 231 is arranged at an end portion on one side in the axial direction.
  • the main body portion 231 is arranged closer to the second guide 240 than the tip portion 232.
  • the main body portion 231 has the same width in the circumferential direction from one side in the axial direction to the other side.
  • the tip portion 232 is arranged at the end portion on the other side in the axial direction.
  • the tip portion 232 has a shape in which the width of the stator core 20 in the circumferential direction becomes smaller from one side in the axial direction to the other side. That is, the tip portion 232 has a shape that tapers from one side in the axial direction toward the other side. As a result, damage to the cuff portion 43 can be suppressed.
  • the second guide 240 accommodates the tip portion 232 at the end surface 20a on one side in the axial direction of the stator core 20.
  • the second guide 240 is not particularly limited as long as it has a structure for accommodating the tip portion 232 of the first guide 230, but in the present embodiment, as shown in FIGS. 3 to 5, the entire first guide 230 is accommodated.
  • FIGS. 4 and 5 when the second guide 240 houses the tip portion 232, the end surface 241 on the other side in the axial direction of the second guide 240 and the end surface 20a on the one side in the axial direction of the stator core 20 come into contact with each other. ..
  • the end surface 241 on the other side in the axial direction of the second guide 240 has a portion parallel to the end surface 20a on one side in the axial direction of the stator core 20.
  • the end face 241 on the other side in the axial direction of the second guide 240 has an end face shape that matches the slot shape in the axial view.
  • the entire end surface 241 on the other side in the axial direction of the second guide 240 is parallel to the end surface 20a on one side in the axial direction of the stator core 20.
  • the width in the circumferential direction of the end surface 241 on the other side in the axial direction of the second guide 240 is smaller than the width in the circumferential direction of the end surface 20a on the one side in the axial direction of the stator core 20.
  • the second guide 240 has a cylindrical portion 242 that is open on the other side in the axial direction.
  • the tip portion 232 is located inside the tubular portion 242 in the axial view.
  • the tip portion 232 may not be located inside the tubular portion 242 in the axial direction.
  • the second guide 240 can move relative to the first guide 230 in the axial direction.
  • the second guide 240 moves from one side in the axial direction to the other side.
  • the second guide 240 accommodates the tip portion 232 with the end surface 20a on one side in the axial direction of the stator core 20.
  • the second guide 240 has a guide portion 243 and an edge portion 244.
  • the guide portion 243 is arranged on one side in the axial direction with respect to the edge portion 244.
  • the guide portion 243 and the edge portion 244 may be composed of different members, but in the present embodiment, they are composed of one member.
  • the wedge 30 comes into contact with the guide portion 243.
  • the edge portion 244 is located at the end on the other side in the axial direction.
  • the width of the edge portion 244 in the circumferential direction of the stator core 20 is smaller than that of the guide portion 243. That is, as shown in FIG. 2, the width W244 of the edge portion 244 is smaller than the width W243 of the guide portion 243.
  • FIG. 5 by accommodating a part of the insulating paper 40 (here, the cuff portion 43) in the edge portion 244, interference between the wedge 30 and a part of the insulating paper 40 (here, the cuff portion 43) is prevented. It can be suppressed.
  • the width W243 in the circumferential direction of the guide portion 243 is constant. Further, the width W244 in the circumferential direction of the edge portion 244 is constant. As shown in FIGS. 2 to 5, a step is formed between the guide portion 243 and the edge portion 244.
  • the axial length L244 of the edge portion 244 is larger than the axial length L43 of the cuff portion 43.
  • the entire cuff portion 43 can be housed in the edge portion 244, so that interference between the wedge portion 30 and the cuff portion 43 can be further suppressed.
  • the axial length L244 of the edge portion 244 is close to the axial length L41 of the cuff portion 43. That is, it is preferable that the axial length L244 of the edge portion 244 is slightly longer than the axial length L41 of the cuff portion 43.
  • the ratio of the axial length L244 of the edge portion 244 to the axial length L41 of the cuff portion 43 exceeds 1. 1.1 or less.
  • the gap G1 between the edge portion 244 and the slot 21 is larger than the thickness of the insulating paper 40.
  • the cuff portion 43 can be easily stored in the edge portion 244.
  • the gap G1 between the edge portion 244 and the slot 21 is close to the thickness of the insulating paper 40. That is, it is preferable that the gap G1 slightly exceeds the thickness of the insulating paper 40.
  • the ratio of the gap G1 between the edge portion 244 and the slot 21 (the width of the gap G1 between the edge portion 244 and the slot 21 / the thickness of the insulating paper 40) with respect to the thickness of the insulating paper 40 is more than 1 and 1.1.
  • the circumferential end edge of the edge portion 244 and the circumferential end of the guide portion 243 is larger than twice the thickness of the insulating paper 40. That is, the gap G2 is larger than the thickness of the cuff portion 43. In order to suppress buckling of the wedge 30, it is preferable that the gap G2 between the circumferential end edge of the edge portion 244 and the circumferential end edge of the guide portion 243 is close to twice the thickness of the insulating paper 40.
  • the gap G2 slightly exceeds twice the thickness of the insulating paper 40.
  • the ratio of the gap G2 between the edge portion 244 and the slot to the thickness of the insulating paper 40 is 2. Beyond 2.2.
  • the axial length L244 of the edge portion 244 is smaller than the axial length L233 of the guide portion 243, but the length is not particularly limited.
  • the first guide 230 and the second guide 240 are connected by an elastic member 221.
  • an elastic member 221 is an elastic body such as a spring.
  • the wedge support mechanism 210 is arranged radially inside the stator core 20.
  • the wedge support mechanism 210 moves from the inside to the outside in the radial direction at a position where the axial position overlaps with the wedge 30 and the radial position overlaps with the radial opening (slot open 22 in FIG. 1) of the slot 21.
  • the wedge support mechanism 210 can support the wedge 30 to be inserted into the slot 21 from the radial direction. Therefore, it is possible to prevent the wedge 30 from bending when the wedge 30 is inserted toward the other side in the axial direction. Therefore, the buckling of the wedge 30 can be further suppressed.
  • the wedge support mechanism 210 of the present embodiment includes a cylinder portion 211, a main body portion 212, and a friction layer 213.
  • the main body portion 212 is attached to the radial outer side of the cylinder portion 211.
  • the friction layer 213 is attached to the radial outer side of the main body 212.
  • the cylinder portion 211 pushes the main body portion 212 toward the outside in the radial direction. Therefore, the main body portion 212 moves radially outward due to the force outward in the radial direction of the cylinder portion 211.
  • the main body portion 212 is a plate-shaped member extending in the axial direction.
  • the axial length of the main body portion 212 of the present embodiment is the same as the axial length of the wedge 30, but may be longer or shorter than the axial length of the wedge 30.
  • the main body 212 is made of, for example, metal.
  • the friction layer 213 is arranged on the outermost side in the radial direction in the wedge support mechanism 210.
  • the friction layer 213 of the present embodiment comes into contact with the wedge 30.
  • the friction layer 213 is made of an elastic material, here made of rubber.
  • the wedge support mechanism 210 has an outer surface 214 that applies a force radially outward to the wedge 30.
  • the outer surface 214 is a surface located on the radial outer side of the friction layer 213.
  • the wedge 30 can be pressed outward on the outer surface 214 in the radial direction. Therefore, the buckling of the wedge 30 can be further suppressed.
  • the outer surface 214 that pushes the wedge 30 is the outermost surface of the wedge support mechanism 210 in the radial direction.
  • the outer side surface 214 may support the entire axial direction of the wedge 30, or may support a part of the wedge 30 in the axial direction.
  • the outer surface 214 may be a flat surface or an uneven surface having concave portions and convex portions. If the outer side surface 214 is a flat surface, the wedge 30 is pushed over the entire surface. When the outer side surface 214 is an uneven surface, the wedge 30 is pushed by a convex portion that makes a plurality of line contact or point contact with the wedge 30.
  • the wedge support mechanism 210 moves from one side in the axial direction to the other side, and moves the wedge 30 from one side in the axial direction to the other side.
  • the wedge support mechanism 210 is moved in the axial direction by the stripper drive unit 140 described later. This makes it possible to omit the wedge pusher.
  • the wedge 30 moves in the axial direction together with the wedge support mechanism 210 due to the frictional force with the wedge support mechanism 210.
  • the wedge support mechanism 210 moves in the axial direction while supporting the wedge 30, so that the wedge 30 moves in the axial direction. do.
  • the wedge support mechanism 210 supports the wedge guide 220 from the inside in the radial direction.
  • the wedge support mechanism 210 moves from the inside to the outside in the radial direction at a position where the axial position overlaps with the wedge guide 220. As a result, buckling of the wedge 30 when the wedge 30 moves from the wedge guide 220 into the slot 21 can be further suppressed.
  • the coil insertion device 100 has a coil 10 in which a coil wire is wound in an annular shape in a plurality of slots 21 penetrating in the axial direction of the stator core 20 from one side in the axial direction to the other side ( In FIG. 8, it is inserted from the right side to the left side). Specifically, the coil insertion device 100 inserts the coil 10 from each slot open 22 so as to straddle the two slots 21 of the stator core 20.
  • the coil insertion device 100 includes the wedge insertion device 200 described above, a plurality of blades 110, a stripper 120 as a coil moving mechanism, a blade drive unit 130, and a stripper drive unit 140.
  • the blade 110 holds the coil 10.
  • the blades 110 are arranged radially inside the stator core 20 and radially outside the stripper 120, side by side in the circumferential direction of the stator core 20, and extend axially.
  • the blade 110 moves in the axial direction.
  • the plurality of blades 110 are arranged on the same circumference corresponding to the teeth 23. The blade 110 allows the coil 10 to be easily inserted into the slot 21.
  • the blade 110 of this embodiment is composed of two blades 111 and 112.
  • the blades 111 and 112 are arranged via a plurality of teeth 23.
  • the blades 111 and 112 guide the coil 10 hooked on the stripper 120, which will be described later, to the slot 21 along the axial and radial directions.
  • the blades 111 and 112 are rod-shaped members extending in the axial direction.
  • the blades 111 and 112 are movable blades that move in the axial direction.
  • the stripper 120 is a coil moving mechanism for moving the coil 10.
  • the stripper 120 is arranged radially inside the stator core 20 and moves in the axial direction.
  • the stripper 120 inserts the coil 10 from one side in the axial direction toward the other side.
  • the stripper 120 comes into contact with the coil 10.
  • a part of the coil 10 is inserted into the slot 21 from the slot open 22 while the coil 10 is axially moved inside the stator core 20 by the stripper 120.
  • the stripper 120 hooks the inside of the coil 10 in the radial direction and pulls up the coil 10 along the blade 110.
  • the stripper 120 may move to the other side in the axial direction together with the blade 110, and may not move to the other side in the axial direction together with the blade 110. In the latter case, the blade 110 moves axially to the other side before the stripper 120.
  • the stripper 120 includes a shaft 121 and a large diameter portion 122.
  • the shaft 121 extends axially. Specifically, the shaft 121 extends from one side in the axial direction to the other side.
  • the large diameter portion 122 is provided at the other end in the axial direction of the shaft 121.
  • the radial inside of the annular coil 10 is hooked on the large diameter portion 122.
  • the large diameter portion 122 has a diameter larger than the diameter of the shaft 121.
  • the central axis of the shaft 121 and the large diameter portion 122 is the same.
  • the diameter of the large diameter portion 122 is the distance between the blades 111 and 112.
  • the large diameter portion 122 of the present embodiment is hemispherical.
  • the tip surface of the stripper 120 on the other side in the axial direction, that is, the tip surface of the large diameter portion 122 is a curved surface.
  • the stripper 120 of this embodiment is connected to the wedge support mechanism 210. Specifically, the shaft 121 of the stripper 120 and the cylinder portion 211 of the wedge support mechanism 210 are connected. Therefore, here, the wedge support mechanism 210 moves in the axial direction as the stripper 120 moves in the axial direction.
  • the blade drive unit 130 moves the blade 110.
  • the blade drive unit 130 includes a blade fixing plate 131, a screw shaft 132, a nut 133, and a blade motor 134.
  • the blade fixing plate 131 is fixed to the blade 110. Specifically, the blade fixing plate 131 is attached to one side of the blades 111 and 112 in the axial direction. The blade fixing plate 131 moves in the axial direction. As a result, the blades 111 and 112 are moved in the axial direction.
  • the screw shaft 132 and the nut 133 form a ball screw.
  • the ball screw converts the rotary motion of the blade motor 134 into a linear motion.
  • the screw shaft 132 extends in the axial direction.
  • the screw shaft 132 is a lead screw for driving the blade 110.
  • the nut 133 fits into the screw shaft 132.
  • the nut 133 is a feed nut for driving the blade 110.
  • the blade motor 134 is attached to the screw shaft 132.
  • the blade motor 134 is a drive source.
  • the stripper drive unit 140 moves the stripper 120.
  • the stripper drive unit 140 includes a stripper fixing plate 141, a screw shaft 142, a nut 143, and a stripper motor 144.
  • the stripper fixing plate 141 is fixed to the stripper 120. Specifically, the stripper fixing plate 141 is attached to one side of the shaft 121 in the axial direction. The stripper fixing plate 141 moves in the axial direction. As a result, the stripper 120 is moved in the axial direction.
  • the screw shaft 142 and the nut 143 form a ball screw.
  • the ball screw converts the rotary motion of the stripper motor 144 into a linear motion.
  • the screw shaft 142 extends in the axial direction.
  • the screw shaft 142 is a lead screw for driving the stripper 120.
  • the nut 143 fits into the screw shaft 142.
  • the nut 143 is a feed nut for driving the stripper 120.
  • the stripper motor 144 is attached to the screw shaft 142.
  • the stripper motor 144 is a drive source.
  • the stripper drive unit 140 of the present embodiment moves the wedge support mechanism 210.
  • the stripper fixing plate 141 is attached to the cylinder portion 211 via the shaft 121.
  • the wedge support mechanism 210 moves in the axial direction due to the axial movement of the stripper fixing plate 141.
  • the wedge insertion method and the coil insertion method of the present embodiment are the wedge 30 insertion methods using the wedge insertion device 200 described above.
  • the coil insertion method of the present embodiment is a method of inserting a coil 10 using the coil insertion device 100 described above. In FIGS. 7 to 11, the insulating paper 40 is not shown.
  • the coil insertion device 100 provided with the wedge insertion device 200 is installed in the stator core 20 (step S1).
  • the insulating paper 40 is arranged in the slot 21 of the stator core 20.
  • the cuff portion 43 is formed so as to project from the end surface 20a on one side in the axial direction of the stator core 20 and be folded back.
  • the coil 10, the wedge insertion device 200, and the coil insertion device 100 are arranged on one side in the axial direction of the stator core 20.
  • the coil 10 is arranged so as to be held between the blades 111 and 112.
  • the stripper 120 is arranged at the center of the plurality of blades 111 and 112 in the radial direction and on one side in the axial direction.
  • the wedge 30 is arranged so as to be supported by the wedge support mechanism 210.
  • the end surface on one side in the axial direction of the outer surface 214 of the wedge support mechanism 210 and the end surface on one side in the axial direction of the wedge 30 are aligned with the end surface on the other side in the axial direction of the outer surface 214 of the wedge support mechanism 210.
  • the wedge 30 is arranged so as to be aligned with the end face on the other side in the axial direction of the wedge 30.
  • the wedge guide 220 is arranged so that the first guide 230 is located on the other side in the axial direction and the second guide 240 is located on one side in the axial direction. In this step S1, the first guide 230 is not accommodated in the second guide 240.
  • the wedge support mechanism 210 and the stripper 120 are moved from one side in the axial direction to the other side (step S2). In this embodiment, it is carried out in the order of FIG. 2 and FIG. 7, FIG. 3, FIG. 4, FIG. 5 and FIG. 8, FIG. 9, FIG. 10 and FIG.
  • the stripper 120 moves to the other side in the axial direction together with the blade 110.
  • the blades 111 and 112 are located inside the stator core 20 in the radial direction.
  • the blade 110 is advanced (raised) by the blade drive unit 130, and the stripper 120 is advanced by the stripper drive unit 140. Since the inside of the coil 10 moves while being hooked on the stripper 120, the coil 10 moves to the other side in the axial direction. Further, the wedge support mechanism 210 is advanced (raised) as the stripper 120 is advanced by the stripper drive unit 140.
  • the wedge support mechanism 210 moves from the inside to the outside in the radial direction at a position where the axial position overlaps with the wedge 30 and the radial position overlaps with the slot 21. Specifically, the cylinder portion 211 applies a force outward in the radial direction, so that the main body portion 212 pushes the wedge 30 outward in the radial direction. As a result, the wedge 30 is supported by the wedge support mechanism 210. In this way, the wedge support mechanism 210 moves from one side in the axial direction to the other side while pressing the wedge 30 outward in the radial direction, so that the wedge 30 also moves from one side in the axial direction to the other side.
  • the coil 10 By moving the blade 110 and the stripper 120, the coil 10 can be inserted into the slot 21 of the stator core 20 as shown in FIGS. 10 and 11 (step S3). Further, by moving the wedge support mechanism 210, a part of the wedge 30 can be inserted into the slot 21 as shown in FIG. Further, by moving the stripper 120, the wedge 30 can be inserted into the slot 21 as shown in FIG. 11 (step S3).
  • step S4 the coil insertion device 100 including the wedge insertion device 200 is removed from the stator core 20 (step S4). Specifically, the stripper 120 is moved toward one side in the axial direction.
  • step S4 the coil 10 and the wedge 30 can be inserted into a plurality of slots 21 penetrating in the axial direction of the stator core 20.
  • the stator 1 shown in FIG. 1 can be manufactured.
  • the wedge guide 220 is arranged as shown in FIGS. 2 and 6 (A) in step S1, and then performs the following operations. Specifically, as shown in FIG. 3, the second guide 240 moves from one side in the axial direction to the other side in a state where the tip portion 232 of the first guide 230 is in contact with the end surface 20a on one side in the axial direction of the stator core 20. When the second guide 240 is moved toward the end surface 20a, the second guide 240 is housed in order from the end on one side in the axial direction of the first guide 230.
  • the elastic member 221 contracts to change from the state of FIG. 6A to the state of FIG. 6B. In this state, as shown in FIG. 3, a gap is provided between the end surface 20a on one side of the stator core 20 and the tip portion 232.
  • the second guide 240 when the tip portion 232 of the first guide 230 is in contact with the end surface 20a on one side in the axial direction of the stator core 20, the second guide 240 further moves from one side in the axial direction to the other side.
  • the second guide 240 and the end surface 20a accommodate the tip portion 232 of the first guide 230.
  • the elastic member 221 further contracts, so that the state shown in FIG. 6C is obtained.
  • the first guide 230 can be pushed into the inside of the second guide 240 and stored.
  • the gap between the end surface 20a on one side of the stator core 20 and the tip portion 232 is reduced. Therefore, as shown in FIGS. 4 and 5, when the wedge 30 is inserted toward the other side in the axial direction, it is possible to prevent the wedge 30 from entering the gap.
  • the cuff portion 43 is outside the edge portion 244 having a width smaller in the circumferential direction than the guide portion 243. It is arranged in the gap formed in the peripheral portion. Therefore, since the cuff portion 43 can be housed in the edge portion 244, interference between the wedge portion 30 and the cuff portion 43 can be suppressed.
  • the wedge insertion device 200 of the present embodiment includes a wedge guide 220 having a second guide 240 for accommodating the tip portion 232 of the first guide 230 arranged on the other side in the axial direction.
  • a wedge guide 220 having a second guide 240 for accommodating the tip portion 232 of the first guide 230 arranged on the other side in the axial direction.
  • the wedge insertion device 200 and the coil insertion device 100 of the present embodiment are suitably used for manufacturing the stator 1 having a high space factor of the coil 10.
  • the shape of the tip portion 232 of the first guide 230 has been described by exemplifying a shape in which the width in the circumferential direction decreases from one side in the axial direction to the other side, but the present invention is not limited to this.
  • the first guide 230 may be composed of only the tip portion 232 having a constant width in the circumferential direction.
  • the wedge insertion device 200 does not include a wedge pusher. As shown in FIG. 13, the wedge insertion device of this modification further includes a wedge pusher 250 that moves the wedge 30 from one side in the axial direction to the other side.
  • the wedge pusher 250 is fixed to the wedge 30. Specifically, the other side of the wedge pusher 250 in the axial direction is attached to one side of the wedge 30 in the axial direction. The wedge pusher 250 moves in the axial direction. As a result, the wedge 30 is moved in the axial direction.
  • the wedge pusher 250 is fixed to the stripper fixing plate 141. Specifically, one axial side of the wedge pusher 250 is attached to the stripper fixing plate 141. The axial movement of the stripper fixing plate 141 causes the wedge pusher 250 to move in the axial direction. Therefore, the insertion direction of the wedge 30 by the wedge pusher 250 is the same as the insertion direction of the coil 10.
  • the method of inserting the wedge 30 in this modification is to insert the wedge 30 into the slot 21 by moving the wedge 30 in the axial direction by the wedge pusher 250. Specifically, since the wedge pusher 250 moves in the axial direction due to the axial movement of the stripper 120, the wedge 30 is also inserted into the slot 21 together with the coil 10.
  • the wedge 30 may be inserted at the same time as the coil 10, or the wedge 30 may be inserted after the coil 10 is inserted.
  • the wedge pusher 250 uses the same drive source as the stripper 120, but the wedge pusher 250 is not limited to this.
  • the wedge pusher 250 may use a drive source different from that of the stripper 120.
  • the wedge pusher 250 is a member different from the stripper 120, but the wedge pusher 250 is not limited to this.
  • the wedge pusher 250 may be composed of a stripper 120 and one member.
  • the wedge insertion device includes a wedge support mechanism 210, but the wedge support mechanism 210 may be omitted. In this case, as in Modification 3, the wedge insertion device includes a wedge pusher 250.
  • the two slots 21 into which the coils are inserted are one slot 21 sandwiching four slots 21 and another slot 21, but are not limited thereto.
  • Stator 10 Coil 20: Stator core 21: Slot 22: Slot open 23: Teeth 30: Wedge 40: Insulating paper 43: Cuff part 100: Coil insertion device 200: Wedge insertion device 210: Wedge support mechanism 220: Wedge guide 221 : Elastic member 230: First guide 232: Tip portion 240: Second guide 242: Cylindrical portion 243: Guide portion 244: Edge portion

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)

Abstract

La présente invention concerne un dispositif d'insertion de coin qui supprime le gauchissement d'un coin. Un dispositif d'insertion de coin (200) insère un coin (30), qui doit être disposé entre une bobine (10) insérée dans une fente (21) et un noyau statorique (20), dans la fente (21) qui s'étend dans la direction axiale du noyau statorique (20) et dans laquelle du papier isolant (40) est disposé, d'un côté à l'autre dans la direction axiale. Le dispositif d'insertion de coin (200) comprend un guide de coin (220) disposé sur un côté du noyau statorique (20) dans la direction axiale et disposé entre les fentes adjacentes (21). Le guide de coin (220) comprend : un premier guide (230) ayant une partie pointe (232) disposée au niveau de la partie extrémité de l'autre côté dans la direction axiale ; une surface d'extrémité (20a) du noyau statorique (20) sur un côté dans la direction axiale ; et un second guide (240) qui reçoit la partie pointe (232).
PCT/JP2020/047550 2020-08-28 2020-12-18 Dispositif d'insertion de coin WO2022044356A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202080103635.8A CN115997331A (zh) 2020-08-28 2020-12-18 楔插入装置

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JP2020144718 2020-08-28
JP2020-144718 2020-08-28

Publications (1)

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WO2022044356A1 true WO2022044356A1 (fr) 2022-03-03

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Country Status (2)

Country Link
CN (1) CN115997331A (fr)
WO (1) WO2022044356A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0833290A (ja) * 1994-07-14 1996-02-02 Toshiba Corp スロット内絶縁体の挿入方法及び挿入装置
JP2000152573A (ja) * 1998-11-05 2000-05-30 Sanko Kiki Kk アウタ巻線装置
JP2014135865A (ja) * 2013-01-11 2014-07-24 Toyota Motor Corp 回転電機の製造方法、ステータ

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0833290A (ja) * 1994-07-14 1996-02-02 Toshiba Corp スロット内絶縁体の挿入方法及び挿入装置
JP2000152573A (ja) * 1998-11-05 2000-05-30 Sanko Kiki Kk アウタ巻線装置
JP2014135865A (ja) * 2013-01-11 2014-07-24 Toyota Motor Corp 回転電機の製造方法、ステータ

Also Published As

Publication number Publication date
CN115997331A (zh) 2023-04-21

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