WO2019189934A1 - Method for preventing location aberration of insulation sheet and device for preventing location aberration of insulation sheet - Google Patents

Method for preventing location aberration of insulation sheet and device for preventing location aberration of insulation sheet Download PDF

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Publication number
WO2019189934A1
WO2019189934A1 PCT/JP2019/014529 JP2019014529W WO2019189934A1 WO 2019189934 A1 WO2019189934 A1 WO 2019189934A1 JP 2019014529 W JP2019014529 W JP 2019014529W WO 2019189934 A1 WO2019189934 A1 WO 2019189934A1
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WO
WIPO (PCT)
Prior art keywords
insulating sheet
rod
core
slot
slots
Prior art date
Application number
PCT/JP2019/014529
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French (fr)
Japanese (ja)
Inventor
知已 岩本
康人 丹羽
Original Assignee
株式会社小田原エンジニアリング
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Publication of WO2019189934A1 publication Critical patent/WO2019189934A1/en

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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
    • H02K15/08—Forming windings by laying conductors into or around core parts
    • H02K15/085—Forming windings by laying conductors into or around core parts by laying conductors into slotted stators
    • 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

Definitions

  • the present invention relates to a technique for preventing displacement of an insulating sheet used in an assembly process of a rotating electric machine such as a motor or a generator or an electromagnetic device such as a transformer, and more specifically, a coil of an insulating sheet inserted into a slot of a core such as a stator.
  • the present invention relates to an insulation sheet misalignment prevention method and an insulation sheet misalignment prevention device for preventing misalignment during insertion.
  • the paper when assembling the stator of a motor, in order to insulate the core and the coil inserted into the slot, the paper is formed into a cylindrical shape along the inner peripheral surface of the slot before inserting the coil.
  • An insulating sheet made of plastic or synthetic resin is inserted.
  • Some insulating sheets have a cuff part formed by bending outward the portions protruding from both axial ends of the core, and the insulating sheet having the cuff part has the cuff part on the axial end surface of the core. The contact prevents the insulating sheet from coming off from the slot in the axial direction.
  • a cuff supporter for protecting the cuff part is used to prevent the cuff part from being damaged when the coil is inserted.
  • the cuff supporter is generally configured to protect the cuff part by surrounding the cuff part with a bifurcated part formed between rod-shaped members arranged radially in the circumferential direction of the core.
  • Patent Document 1 discloses a technique for preventing the cuff part from being damaged at the time of insertion of the coil at a step caused by unevenness of the formation accuracy of the rod-like member at the joint of the bifurcated part. That is a configuration in which a collar portion for retracting the cuff portion is formed in the vicinity of the joint (joining portion) of the rod-shaped member. The presence of the flange prevents the cuff part from being pressed and damaged at the joint when the coil is inserted.
  • FIG. 16 of Patent Document 1 also discloses a configuration in which a collar portion is formed over the entire inner peripheral surface of the bifurcated portion.
  • the collar portion is a measure taken in view of the fact that the coil as a bundle of wire rods moves obliquely in the slot when the coil is inserted, thereby causing an action of pressing the cuff portion against the rod-shaped member. That is, the collar part described in Patent Document 1 protects the cuff part by escaping (retracting) it in the radial direction of the core when the coil hits the cuff part.
  • Patent Document 2 there is a problem caused by providing the collar portion in Patent Document 1, that is, by providing the collar portion, the axial dimension of the cuff support is increased, and accordingly, the coil end portion of the coil is increased. Supporter jigs and the like for dealing with the problem that the height to the apex is increased are disclosed.
  • a supporter jig described in Patent Document 2 is a stepped portion 100a that protrudes in the circumferential direction of the core (left and right in the figure) on both sides of the lower stepped portion on the core end face side, like the supporter jig 100 shown in FIG. 13A of the present application.
  • the cuff part 102a of the slot paper (insulating sheet) 102 is accommodated in a space formed by the step part 100a.
  • the protrusion in the circumferential direction of the stepped portion 100 a is formed by reducing the width of the support jig 100 by the dimension t with respect to the width d of the teeth 106 that define the slot 104.
  • reference numeral 108 denotes a concentric coil.
  • the stator described in Patent Document 2 is an assembly configuration in which a concentric winding coil 108, which is formed by winding a plurality of rectangular conductive wires and bending into a substantially hexagonal shape or a substantially octagonal shape, is inserted into the slot 104 from the radially inner side of the core. It has become. For this reason, when the concentric winding coil 108 is inserted, a force (frictional force) in the radial direction of the core mainly acts on the slot paper 102. Therefore, the space formed by the stepped portion 100a has a large meaning as a space for accommodating the cuff portion 102a in the radial direction when the coil is inserted, as in the case of Patent Document 1.
  • the supporter jig 100 also has a function of preventing the slot paper 102 from coming off in the axial direction of the core by the cuff portion 102a contacting the stepped portion 100a on both sides in the axial direction of the core.
  • a coil of the stator or rotor a plurality of coil segments formed by bending a wire rod into a U-shape are linearly inserted into a plurality of slots arranged along the circumferential direction of the stator or rotor, respectively.
  • a so-called segment type coil is also known in which the free ends of these coil segments are twisted and electrically joined together by welding or the like to form a coil.
  • the protruding amount of the insulating sheet from the axial end surface of the core affects the coil height (for example, the total length of the stator) after twisting on the free end side of the coil segment.
  • the coil height for example, the total length of the stator
  • the protruding amount of the insulating sheet is large, the bent part on the free end side of the coil segment inevitably increases the distance from the core end surface, and the height of the coil is increased. Becomes higher. This means, for example, that the size of the motor cover in which the stator is accommodated increases. The smaller the size of the motor cover, etc., the greater the contribution to miniaturization.
  • the amount of protrusion of the insulating sheet is made as small as possible (for example, about 1 to 4 mm).
  • the protruding amount of the insulating sheet is such a minimum size, there is no room for providing a cuff part, and the insulating sheet is hardly allowed to be displaced when the coil is inserted.
  • Patent Documents 1 and 2 both are based on the premise that the insulating sheet has a cuff portion, and the coil pressing force.
  • the cuff part is configured to escape and accommodate in the radial direction of the core when the is acted. For this reason, it is impossible to cope with the positional deviation when the coil is linearly inserted into the slot without the cuff portion.
  • the configuration of Patent Document 2 has a function of preventing the slot paper (insulating sheet) from being pulled out in the axial direction of the core as described above, the coil 110 is linear as shown in FIG. 13B. When inserted into the slot 104, the slot paper 102 receives a frictional force in the axial direction.
  • the lower end of the coil 110 may hit the end face and receive a large axial force, and the coil 110 is smoothly introduced into the slot.
  • a force that shifts the slot paper 102 in the axial direction due to friction acts.
  • the linearity of the insertion portions (straight portions) of the plurality of coils 110 is uniform, it is unlikely that a large frictional force will occur when the coils are inserted while being held together by a machine. Since some coils are bent, a large frictional force acts on the slot paper 102 in that case.
  • the displacement of the slot paper 102 is restrained by the contact between the cuff portion 102a and the stepped portion 100a.
  • the rigidity of the cuff portion 102a is that when the coil 110 is linearly inserted. It cannot withstand frictional forces.
  • the present invention was devised in view of such a current situation, and suppresses the displacement of the insulating sheet with high accuracy with a configuration in which the amount of protrusion from the core end face is small, and as a result, electromagnetics such as rotating electrical machines such as motors and transformers.
  • the purpose is to contribute to miniaturization of equipment.
  • the present invention prevents the coil from directly contacting the axial end surface of the cylindrical insulating sheet, and even if an axial frictional force is generated when the coil is inserted, the insulating sheet It was decided to prevent displacement by buckling strength due to the cylindrical shape.
  • the insulation A method for preventing misalignment of an insulating sheet for preventing misalignment of the sheet, wherein the insulating sheet is an insulating sheet formed in an outer shape along the inner peripheral surface of the slot, and a rod-shaped member unit including a plurality of rod-shaped members
  • the rod-shaped members are arranged in the circumferential direction at the corresponding positions between the slots, are arranged radially, are movable in the radial direction of the core, and protrude on both sides in the circumferential direction.
  • a rod-shaped member unit having an edge is disposed on the distal end side of the core in the insertion direction of the insulating sheet, and the plurality of rod-shaped members of the rod-shaped member unit are moved in the radial direction between the slots.
  • the coil is inserted into the slot in a state where at least part of the edge of the insulating sheet protruding from the axial end surface of the core is covered with the protruding edges of the plurality of rod-shaped members, respectively. It is characterized by inserting.
  • the plurality of rod-shaped member units are disposed on both sides of the core in the axial direction, and the plurality of the bar-shaped member units disposed on both sides of the core in the axial direction.
  • the rod-shaped member is moved in the radial direction to enter between the slots, and at least part of the edge of the insulating sheet protruding from the end surface in the axial direction of the core is moved to the plurality of rod-shaped members.
  • the coil may be inserted into the slot in a state covered with a protruding edge.
  • the insulating sheet may be inserted into the slot in a state where the plurality of rod-shaped members of at least one of the rod-shaped member units are moved in the radial direction and are respectively inserted between the slots.
  • the insulating sheet is individually inserted along the axial direction of the core into a plurality of slots arranged at equal intervals in the circumferential direction of the core, and then the slot is inserted.
  • a rod-like member unit comprising a plurality of rod-like members, wherein each of the rod-like members is arranged radially in the circumferential direction at a corresponding position between the slots, and is movable in the radial direction of the core
  • a bar-shaped member unit having protruding edges on both sides in the circumferential direction is disposed on the distal end side of the core in the insertion direction of the insulating sheet, and the compound of the bar-shaped member unit is inserted before inserting the coil.
  • the rod-shaped member is moved in the radial direction to enter between the slots, and at least part of the edge of the insulating sheet protruding from the end surface in the axial direction of the core is moved to the plurality of rod-shaped members. It is characterized by covering each with a protruding edge.
  • the rod-shaped member units are respectively disposed on both sides in the axial direction of the core, and before the insertion of the coil, each of the rod-shaped member units disposed on both sides in the axial direction of the core.
  • the rod-shaped member unit, the plurality of rod-shaped members are moved in the radial direction to enter between the slots, and at least a part of the edge of the insulating sheet protruding from the end surface in the axial direction of the core,
  • Each of the plurality of rod-shaped members may be covered with the protruding edges.
  • the shape and size of the cross section of the insulating sheet perpendicular to the axial direction of the core may be uniform over the entire axial length of the core.
  • the insulating sheet may be formed by bending a single sheet so as to divide the slot into a plurality of slots in the radial direction.
  • At least one of both ends of the insulating sheet in the direction along the inner periphery of the slot is bent at the central portion in the radial direction of the slot. It is preferable that the slot is divided into two by the end portion.
  • the central portion of the insulating sheet is bent at a line along the axial direction of the core at the radial central portion of the slot, and the bent insulating material is
  • the slot may be divided into two by a sheet.
  • the insulating sheet misalignment prevention device of the present invention is a position of the insulating sheet that prevents misalignment in the axial direction of the core of the insulating sheet individually inserted into a plurality of slots arranged at equal intervals in the circumferential direction of the core.
  • An apparatus for preventing misalignment comprising a plurality of rod-shaped members, the rod-shaped member unit disposed on the distal end side of the core in the insertion direction of the insulating sheet, wherein each rod-shaped member is interposed between the slots.
  • a bar-shaped member unit arranged radially in the circumferential direction at a corresponding position and movable in the radial direction of the core, and a drive for simultaneously moving the plurality of bar-shaped members of the bar-shaped member unit in the radial direction
  • Each of the rod-shaped members of the insulating sheet protruding from the axial end surface of the core when entering between the slots by moving radially inward.
  • At least a portion of the cover flange edges characterized in that it has on both sides of the circumferential direction.
  • each of the rod-shaped member units is provided with the rod-shaped member units on both sides in the axial direction of the core, and the drive mechanism is disposed on both sides in the axial direction of the core.
  • the plurality of rod-shaped members may be moved in the radial direction simultaneously.
  • each said rod-shaped member is good to have the connection part which supports the part which has the said protrusion, and is connected to the said drive mechanism.
  • the two rod-shaped members are formed to extend in a bifurcated manner so as to surround one slot from the one connecting portion, and the protruding edge is formed over the entire inner circumference of the bifurcated portion. It is good to be.
  • the drive mechanism has a guide member that guides the radial movement of each rod-shaped member, and a plurality of arc-shaped cam grooves connected to the respective rod-shaped members, with the axis of the core as a center. It is good to have the cam member which moves each said rod-shaped member to the said radial direction by rotating.
  • a drive source that rotationally drives the cam member of the drive mechanism in the circumferential direction.
  • the displacement of the insulating sheet can be suppressed with high accuracy with a configuration with a small amount of protrusion from the end face of the core, and as a result, it is possible to contribute to miniaturization of rotating electrical machines such as motors and electromagnetic devices such as transformers.
  • FIG. 5 is a perspective view of a state in which each misalignment prevention rod has moved from the state of FIG.
  • FIG. 11 is a schematic plan view of the insulation sheet misregistration prevention apparatus shown in FIG. 10, showing a state where the misregistration prevention rod is in a retracted position.
  • FIG. 11 is a schematic plan view of the insulation sheet misregistration prevention apparatus shown in FIG.
  • FIG. 1 is a view for explaining a method for preventing displacement of an insulating sheet according to an embodiment of the present invention, and is a perspective view of a main part showing a state in which the insulating sheet is inserted into a slot of a stator core.
  • a stator core 2 shown in FIG. 1 (hereinafter referred to as “core” unless otherwise specified) is a component that forms a stator of a rotating electrical machine such as a motor, and has coil insertion holes at equal intervals in the circumferential direction.
  • a plurality of slots 4 are arranged.
  • the slot 4 is a space defined between salient poles 6 adjacent to each other in the circumferential direction of salient poles (teeth) 6 formed at equal intervals in the circumferential direction of the stator core 2.
  • the axial length is shown to be considerably shorter than the original dimension.
  • a paper insulating sheet 8 is inserted into each slot 4 from the axial direction of the core by a known insulating sheet inserting device (inserter).
  • the insulating sheet 8 may be made of synthetic resin.
  • the insulating sheet 8 is formed in a cylindrical shape whose outer shape is bent along the inner peripheral surface of the slot 4 by bending a piece of paper (for example, thickness 0.19 mm). Both ends 8a and 8b in the circumferential direction of the insulating sheet 8 (in the direction along the inner periphery of the slot 4 and other than the insertion direction into the slot 4) are bent inward at the center in the radial direction of the core. The inside is divided into two in the radial direction.
  • Reference numeral 8 c denotes a portion of the edge of the insulating sheet 8 that is outside the core in the radial direction when the insulating sheet 8 is inserted into the slot 4.
  • an eight-layer coil is inserted.
  • the first to fourth layers of the coil are inserted into the radially inner space 8A of the insulating sheet 8, and the coil is inserted into the radially outer space 8B.
  • the fifth to eighth layers are inserted.
  • the insulating sheet 8 By inserting the insulating sheet 8 into the slot 4, insulation between the stator core 2 and the coil is ensured.
  • the insulating sheet 8 By forming the insulating sheet 8 into a shape that divides the inside of the slot 4 into two, the insulation between the first to fourth layer groups and the fifth to eighth layer groups of the coil inserted into the slot 4 is ensured. Can do.
  • the insulating sheet 8 is formed so as to divide the slot 4 into two in the radial direction, but may be formed so as to divide into three or more.
  • the insulating sheet 8 used in the present embodiment does not have a cuff part obtained by bending the end portion in the axial direction, and the shape and size of the cross section perpendicular to the axial direction of the core extends over the entire length in the axial direction of the core. It is a uniform, cuff-less insulating sheet.
  • the cuff part of the insulating sheet has a function of preventing the insulating sheet from coming out of the slot by contacting the end surface of the core, but the insulating sheet 8 used in this embodiment is a cuff part. Therefore, the insulating sheet itself does not have a position shift prevention function.
  • the insulating sheet 8 is not only to ensure insulation, but also to insulate against the frictional force generated between the insulating sheet 8 and the coil when the coil is linearly inserted into the slot 4 from the axial direction of the core.
  • the buckling strength of the seat 8 is improved. This point will be described later.
  • FIG. 3 shows a state after the insulating sheet 8 is inserted into the slot 4 of the stator core 2, that is, a state where the setting of the insulating sheet 8 before the coil is inserted is completed.
  • the insulating sheet 8 is inserted and set in a state in which the end portion in the axial direction slightly protrudes from the end surface of the stator core 2.
  • the protruding amount p from the end face of the stator core 2 is, for example, about 1 to 4 mm.
  • the insulating sheet 8 is individually inserted into each slot 4 by a known inserter, but the protruding amount p from the end face of the stator core 2 is not always uniform.
  • the insulating sheet 8 is pressed with a flat plate so that the protruding amount p is You may provide the process made uniform.
  • FIG. 3 shows the protruding state of the insulating sheet 8 on the upper surface side of the stator core 2, the protruding amount of the insulating sheet 8 is about the same on the lower surface side of the stator core 2.
  • one insulating sheet 8 is inserted into one slot 4
  • the insulating sheet 8 is inserted into all slots 4 in the same manner.
  • an upper unit 10 and a lower unit 12 for preventing axial displacement of the insulating sheet 8 are disposed on both sides of the core in the axial direction.
  • the upper unit 10 is arranged radially in the circumferential direction of the core at a position corresponding to between the slots 4 shown in FIG. 3, and is provided so as to be movable between the slots 4 in the radial direction of the core.
  • a plurality of misalignment prevention rods 14 are provided.
  • the lower unit 12 is arranged radially at the positions corresponding to the spaces between the slots 4 in the circumferential direction of the core, and is provided between the slots 4 so as to be movable in the radial direction of the core.
  • a misalignment prevention rod 16 is provided.
  • upper unit 10 and lower unit 12 are rod-like member units respectively disposed on both sides of the core in the axial direction. Further, as will be described later, the convex portions provided at the tip portions of the misregistration prevention rods 14 and 16 correspond to the rod-shaped members.
  • FIG. 4 shows a state immediately after the insertion of the insulating sheet 8 into each slot 4 is completed.
  • the position shift prevention rods 14 of the upper unit 10 and the position shift prevention rods 16 of the lower unit 12 are It is in the retracted position (initial position) retracted to the outside in the radial direction. In this retracted position, the misalignment prevention rods 14 and 16 do not hinder the insertion of the insulating sheet 8 into the slot 4. Therefore, the upper unit 10 and the lower unit 12 may be disposed before the insulating sheet 8 is inserted. . However, since the insertion of the insulating sheet 8 itself can be performed without the upper unit 10 and the lower unit 12, the upper unit 10 and the lower unit 12 may be disposed after the insulating sheet 8 is inserted.
  • each displacement prevention rod 14 and each displacement prevention rod 16 are simultaneously moved radially inward by a drive mechanism described later. Thereby, the front-end
  • the misalignment prevention rod 14 in the upper unit 10 has a front end portion 14A that enters between the slots 4, and a connection portion 14B that supports the front end portion 14A and is connected to a drive mechanism described later. is doing.
  • the tip portion 14A has convex portions 14A1 and 14A2 which are two rod-like members that enter between the slots 4, respectively. That is, the misalignment prevention rod 14 has one connection portion 14B and convex portions 14A1 and 14A2 extending in a bifurcated manner so as to surround one slot 4 from the one connection portion 14B.
  • Each of the convex portions 14A1 and 14A2 protrudes from the axial end surface of the core when entering between the slots 4, and is a part of the upper edge of the cuff portion-less insulating sheet 8 (one side viewed in the circumferential direction of the core).
  • the edges 14A1a and 14A2a that respectively cover the edges are provided on both sides of the core in the circumferential direction.
  • the projecting edge 14A1a and the projecting edge 14A2a are connected to each other on the inner periphery of the fork, and the projecting edge is formed over the entire inner periphery of the fork.
  • reference numeral 14Ba indicates an insertion hole of a shaft 38a of the cam follower 38 shown in FIG. 10 to be described later for connection to the drive mechanism.
  • the misalignment prevention rod 16 in the lower unit 12 has the same configuration. That is, as shown in FIG. 6B, the misalignment prevention rod 16 has a tip portion 16A that enters between the slots 4, and a connection portion 16B that supports the tip portion 16A and is connected to a drive mechanism described later. Yes.
  • the distal end portion 16A has convex portions 16A1 and 16A2 which are two rod-shaped members that enter between the slots 4, respectively. That is, the misalignment prevention rod 16 has one connection portion 16B and convex portions 16A1 and 16A2 extending in a bifurcated manner so as to surround one slot 4 from the one connection portion 16B.
  • Each convex portion 16A1, 16A2 protrudes from the axial end surface of the stator core 2 when entering between the slots 4 and is part of the lower end edge of the cuff portion-less insulating sheet 8 (one side viewed in the circumferential direction of the core).
  • the edges 16A1a and 16A2a that respectively cover the edges of the core are seen on both sides when viewed in the circumferential direction of the core.
  • the projecting edge 16A1a and the projecting edge 16A2a are connected to each other on the inner periphery of the fork, and the projecting edge is formed over the entire inner periphery of the fork.
  • reference numeral 16Ba denotes an insertion hole for the shaft 44a of the cam follower 44 shown in FIG. 10 to be described later for connection to the drive mechanism.
  • each displacement prevention rod 14 of the upper unit 10 moves inward in the radial direction of the core, as shown in FIG. 7, each displacement prevention rod 14 comes into close contact with the circumferential direction of the core.
  • the convex portions 14A1 and 14A2 located on the adjacent salient poles 6 and 6) of each misalignment prevention rod 14 are also connected to the convex portions of the adjacent misalignment prevention rod 14 on the outer side of the fork.
  • a protruding edge is formed over the entire inner circumference between the adjacent convex portions.
  • FIG. 8 is a cross-sectional view taken along line VIII-VIII in FIG. 7 after the insulating sheet 8 is inserted into the slot 4.
  • FIG. 8 shows only the width of three slots 4. The specific dimensions shown below are merely examples.
  • the inner width w1 between the projecting edges 14A1a and 14A2a of the misalignment prevention rod 14 covers the upper edge of the insulating sheet 8 inserted into the slot 4 between the adjacent salient poles (teeth) 6 and 6 with the projecting edges 14A1a and 14A2a. Therefore, the width of the slot 4 (which is also the width of the outer shape of the insulating sheet 8) w2 is set to be slightly narrower.
  • tip part 14A shown to FIG. 6A becomes a guide at the time of coil insertion. That is, in this embodiment, a pair of straight portions (slot insertion portions) of a coil segment formed by bending a rectangular wire into a U shape is inserted into the slot 4 while moving linearly, but the convex portions 14A1, 14A2 Forms an opening when the straight portion is inserted into the slot 4.
  • the convex portions 14A1 and 14A2 of the tip portion 14A have a convex curved surface on the upper surface (surface on the coil insertion side) in order to facilitate coil insertion. Since the upper end edge of the insulating sheet 8 is covered with the projecting edges 14A1a and 14A2a, the leading end of the coil in the insertion direction is prevented from hitting the upper end edge of the insulating sheet 8.
  • the protrusions 14A1a and 14A2a protrude in the circumferential direction from the side wall parallel to the coil insertion direction (axial direction of the core) of the protrusions 14A1 and 14A2 to 0.42 mm.
  • the protruding amount d1 of the insulating sheet 8 from the upper surface of the stator core 2 is 2.8 mm
  • the protruding amount d2 of the insulating sheet 8 from the lower surface of the stator core 2 is 2 mm.
  • a slight gap g (0.2 mm in this case) exists between the projecting edges 14A1a and 14A2a and the upper end of the insulating sheet 8. Therefore, after each insulating sheet 8 is inserted and set in each slot 4, when each position shift prevention rod 14 of the upper unit 10 moves inward in the radial direction, the tip end portion 14 ⁇ / b> A is in a substantially non-contact state with the insulating sheet 8. It is possible to enter between the slots 4.
  • the presence of the gap g prevents the set insulating sheet 8 from being deformed or displaced due to the movement of each misalignment prevention rod 14.
  • the width of the protrusions 14A1 and 14A2 of the tip end portion 14A viewed in the circumferential direction of the core is slightly narrower than the width of the salient pole (tooth) 6 in the same direction. The same applies to the misalignment prevention rod 16 of the lower unit 12.
  • the insulating sheet 8 since the lower end of the insulating sheet 8 hits the protruding edges 16A1a and 16A2a provided on the convex portions 16A1 and 16A2 of the tip portion 16A of the positional deviation prevention rod 16 of the lower unit 12, further positional deviation occurs. Absent. As described with reference to FIG. 2, the insulating sheet 8 is formed in a cylindrical shape and is bent into a shape that divides the slot 4 into two. As a result, the buckling strength of the insulating sheet 8 is further increased, and displacement and deformation can be prevented against the frictional force F1 when the coil is inserted. Even in the case where the frictional force F2 from the lower end side to the upper end side of the insulating sheet 8 acts, the upper end of the insulating sheet 8 hits the projecting edges 14A1a and 14A2a.
  • the recess formed by the presence of the projecting edges 14A1a, 14A2a, 16A1a, and 16A2a is provided to allow the cuff part to escape in the radial direction of the core as in the prior art. It is not a thing.
  • the concave portion is a result resulting from the dimension setting for preventing the set insulating sheet 8 from being deformed or displaced due to the movement of the respective misalignment prevention rods 14 and 16. .
  • the margin R covering the edge of the insulating sheet 8 is only about 0.08 mm, the positional deviation of both sides of the insulating sheet 8 in the axial direction is suppressed while suppressing the reduction of the coil space factor.
  • the displacement due to the frictional force after the coil is inserted into the slot 4 is countered by the buckling strength of the insulating sheet 8.
  • the distal end portion of the U-shaped coil segment in which the pair of slot insertion portions are inserted into the slot 4 protrudes from the end surface of the stator core 2, and the protruding portion is twisted and electrically joined by welding or the like. If the protruding amount of the insulating sheet 8 from the core end surface is large, the height from the core end surface to the twisted portion is increased and the axial coil height is increased, which hinders downsizing of the motor and the like. The same can be said on the side where the connecting portion for connecting the pair of slot insertion portions is arranged in the U-shaped coil segment.
  • the gap g (0.2 mm) between the projecting edges 14A1a, 14A2a and the upper end of the insulating sheet 8 is set from the viewpoint of satisfying such a condition. That is, the size of the gap g is such that when the displacement prevention rods 14 and 16 move to a position covering the edge of the insulation sheet 8, the insulation sheet 8 comes into contact with the displacement and deformation. The size is such that the insulation between the stator core 2 and the coil can be maintained even if it is slightly displaced by the frictional force when inserting the coil.
  • the insulating sheet 8 is covered with the protruding edges to prevent the coil from directly hitting the edge of the insulating sheet 8, and the frictional force that can be generated when the coil is inserted. Since the position shift prevention structure is opposed to the buckling strength of the insulation sheet 8, it is possible to prevent the position shift of the cuff portion-less insulation sheet 8 which does not allow a slight position shift with high accuracy. For this reason, the protrusion amount from the core end surface of the insulating sheet 8 can be made as small as possible, and it can contribute to size reduction of a motor or the like.
  • the bent shape of the insulating sheet 8 is not limited to the shape shown in FIG.
  • the slot 4 may not be partitioned without bending the circumferential tip of the insulating sheet 8.
  • reference numerals L1 to L8 denote coils from the first innermost layer of the stator core 2 to the outermost eighth layer in order.
  • FIG. 9B only one of the circumferential ends 8a and 8b of the insulating sheet 8 (one end 8a in the illustrated example) is bent so that the slot 4 is divided into two. Good.
  • the central portion of the insulating sheet 8 is bent at the central portion of the slot 4 as viewed in the radial direction of the core, and the slot 4 is divided into two by the bent portion.
  • Both ends 8a and 8b may be shaped to be positioned on the opposite side of the slot 4 when viewed in the circumferential direction of the core.
  • both ends 8a and 8b in the circumferential direction of the insulating sheet 8 may be further bent so that the central partition portion is tripled.
  • the insulation sheet misregistration prevention device 30 includes the upper unit 10 and the lower unit 12 which are the rod-shaped member units described above, and each misregistration prevention rod 14 and the lower unit of the upper unit 10.
  • a drive mechanism 34 and the like for moving each misalignment prevention rod 16 of the unit 12 in the radial direction of the core are provided.
  • the driving mechanism 34 is disposed on the lower side of the annular displacement prevention rod 14 and the annular upper cover 36 that covers the upper surface of each displacement prevention rod 14.
  • an annular upper guide member 37 having a plurality of radial guide grooves for guiding the radial movement of the core.
  • An annular upper cam member 40 is accommodated in the lower recess of the guide member 37, and the upper cam member 40 has an arcuate cam groove 40 a into which a cam follower 38 fixed to the misalignment prevention rod 14 is fitted. It has a plurality of radial shapes.
  • reference numeral 52 denotes a base member that supports the drive mechanism 34 (not shown in FIG. 10).
  • An annular lower guide member 39 is arranged on the upper surface side of the displacement prevention rod 16, and the lower guide member 39 has a plurality of radial guide grooves for guiding the displacement of the displacement displacement rod 16 in the radial direction of the core. is doing.
  • An annular lower cover 42 is disposed on the lower surface side of the displacement prevention rod 16, and the lower cover 42 has a guide groove for guiding the movement of the displacement prevention rod 16 in the radial direction of the core on the inner surface. It has a plurality of radial shapes.
  • the drive mechanism 34 further includes a drive shaft 48 that connects the upper cam member 40 and the lower cam member 46, which are cam members, via the convex portions 40b and 46b.
  • the drive shaft 48 is connected to a drive source 49 such as an air cylinder or a servo motor that rotationally drives the upper cam member 40 and the lower cam member 46 in the circumferential direction of the core.
  • the drive shaft 48 is moved within the virtual region 50 shown in FIG. 11 by the driving force of the drive source 49, so that the upper cam member 40 and the lower cam member 46 are rotated around the axis of the stator core 2. Rotate in the direction. As a result, the displacement prevention rods 14 and 16 of the upper unit 10 and the lower unit 12 move in the radial direction of the core.
  • FIG. 11 shows a state in which the misalignment prevention rods 14 and 16 are retracted to the outside in the radial direction of the core. That is, the drive shaft 48 shown in FIG. 10 is disposed at the retracted position P1.
  • the drive source 49 described above operates and the drive shaft 48 moves from the retracted position P1 shown in FIG. 11 to the insulating sheet 8 as shown in FIG. Is moved to the support position P ⁇ b> 2 that prevents the positional displacement of the first position.
  • FIG. 10 also shows this state.
  • Control of the operation of the drive source 49 may be performed automatically using a processor or a control circuit, or may be performed by a person operating a switch.
  • the upper and lower misregistration prevention rods 14 and 16 are provided with the tip portion having the bifurcated convex portion, but the position where only one convex portion entering between the slots 4 is provided per rod. It is good also as a structure which moves a slip prevention rod in the radial direction of a core.
  • the present invention is not limited to a stator of a rotating electric machine such as a motor, but also when inserting an insulating sheet into a slot of a core of an electromagnetic device such as a rotor or a transformer and then inserting a coil into the slot. This can be applied to prevent misalignment.
  • each unit described in the above-described embodiment is an example, and can be appropriately changed as long as the above-described function can be realized.
  • the convex edges 16A1a and 16A2a are tapered so that the opening formed between the adjacent projecting edges is wide (see FIG. 6A). Further, the convex edges 16A1a and 16A2a of the misalignment prevention rod 16 can hold the inserted insulating sheet 8 at a fixed position. Even in this method, the coil segment can be inserted into the slot 4 with at least a part of the upper and lower edges of the insulating sheet 8 covered with the protruding edges of the misalignment prevention rod. The effect of preventing the displacement of the insulating sheet 8 similar to the case of the embodiment can be obtained.
  • the coil segment inserted into the slot 4 is usually arranged across a plurality of slots. Therefore, at least on the upper side of FIG. 5, the turn portion straddling the plurality of slots becomes an obstacle, and when the misalignment prevention rod 14 is in the misalignment prevention position of FIG. 5, the misalignment prevention rod 14 is arranged in the axial direction of the stator core. Can not be removed by moving to. For this reason, when the upper unit 10 including the misalignment prevention rod 14 is removed after the coil segment is inserted, the upper unit 10 may be removed after the misalignment prevention rod 14 is once moved to the retracted position in FIG. .

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

Abstract

According to the present invention, each of location aberration preventing rods (14, 16) disposed in a radial shape circumferentially on both sides of the axial direction of a core (2) has bifurcated convex portions (14A1, 14A2, 16A1, 16A2) inserted into a slot (4). Each of the convex portions has flanges (14A1a, 14A2a, 16A1a, 16A2a) on both sides when viewed in the circumferential direction of the core (2). When the location aberration preventing rods (14, 16) move to a radially inner side of the core (2) after an insulation sheet (8) is inserted into the slot (4), an edge of the insulation sheet (8) is covered by the flanges (14A1a, 14A2a, 16A1a, 16A2a) so that contact between a coil and the edge when the coil is inserted is prevented, and location aberration of the insulation sheet (8) in the axial direction of the core (2) is also prevented. The location aberration preventing rods are installed only on a distal end in the insertion direction of the insulation sheet (8).

Description

絶縁シートの位置ずれ防止方法及び絶縁シートの位置ずれ防止装置Insulation sheet misalignment prevention method and insulation sheet misalignment prevention apparatus
　本発明は、モータや発電機等の回転電機又はトランス等の電磁機器の組立工程で用いられる絶縁シートの位置ずれ防止技術に関し、詳しくは、ステータ等のコアのスロットに挿入された絶縁シートのコイル挿入時の位置ずれを防止するための絶縁シートの位置ずれ防止方法及び絶縁シートの位置ずれ防止装置に関する。 TECHNICAL FIELD The present invention relates to a technique for preventing displacement of an insulating sheet used in an assembly process of a rotating electric machine such as a motor or a generator or an electromagnetic device such as a transformer, and more specifically, a coil of an insulating sheet inserted into a slot of a core such as a stator. The present invention relates to an insulation sheet misalignment prevention method and an insulation sheet misalignment prevention device for preventing misalignment during insertion.
　例えば、モータのステータを組み立てる場合、コアとそのスロットに挿入されるコイルとを絶縁するために、スロットにはコイル挿入に先立って、外形がスロットの内周面に沿う筒状に形成された紙製又は合成樹脂製の絶縁シートが挿入される。
　絶縁シートには、コアの軸方向両端から突出した部分を外側に折り曲げて形成されたカフス部を有しているものもあり、カフス部を有する絶縁シートは、カフス部がコアの軸方向端面に当接することでスロットからの絶縁シートの軸方向の抜けが防止される。
　また、カフス部はその材質上剛性を有していないため、コイル挿入時のカフス部の損壊を防止すべく、カフス部を保護するカフスサポータが用いられる。カフスサポータは一般的に、コアの周方向に放射状に配置された棒状部材間に形成される二股部でカフス部を囲むようにして保護する構成となっている。 For example, when assembling the stator of a motor, in order to insulate the core and the coil inserted into the slot, the paper is formed into a cylindrical shape along the inner peripheral surface of the slot before inserting the coil. An insulating sheet made of plastic or synthetic resin is inserted.
Some insulating sheets have a cuff part formed by bending outward the portions protruding from both axial ends of the core, and the insulating sheet having the cuff part has the cuff part on the axial end surface of the core. The contact prevents the insulating sheet from coming off from the slot in the axial direction.
Further, since the cuff part is not rigid due to its material, a cuff supporter for protecting the cuff part is used to prevent the cuff part from being damaged when the coil is inserted. The cuff supporter is generally configured to protect the cuff part by surrounding the cuff part with a bifurcated part formed between rod-shaped members arranged radially in the circumferential direction of the core.
　そして、たとえば特許文献１には、二股部の継ぎ目に棒状部材の形成精度の不均一によって生じる段差でコイルの挿入時にカフス部が破損することを防止する技術が開示されている。
　それは、棒状部材の継ぎ目（合わせ部）の近傍にカフス部を退ける庇部を形成した構成である。その庇部の存在によって、コイルの挿入時にカフス部が継ぎ目に押し付けられて破損することが防止される。
　特許文献１の図１６には、二股部の内周面全体に亘って庇部を形成した構成も開示されている。その庇部は、コイル挿入時にスロット内で線材の束としてのコイルが斜めに移動することにより、カフス部を棒状部材に押し付ける作用が生じることに鑑みてなされた対策である。
　即ち、特許文献１に記載の庇部は、コイルがカフス部に当たったときにカフス部をコアの径方向に逃がして（退けて）保護するものである。 For example, Patent Document 1 discloses a technique for preventing the cuff part from being damaged at the time of insertion of the coil at a step caused by unevenness of the formation accuracy of the rod-like member at the joint of the bifurcated part.
That is a configuration in which a collar portion for retracting the cuff portion is formed in the vicinity of the joint (joining portion) of the rod-shaped member. The presence of the flange prevents the cuff part from being pressed and damaged at the joint when the coil is inserted.
FIG. 16 of Patent Document 1 also discloses a configuration in which a collar portion is formed over the entire inner peripheral surface of the bifurcated portion. The collar portion is a measure taken in view of the fact that the coil as a bundle of wire rods moves obliquely in the slot when the coil is inserted, thereby causing an action of pressing the cuff portion against the rod-shaped member.
That is, the collar part described in Patent Document 1 protects the cuff part by escaping (retracting) it in the radial direction of the core when the coil hits the cuff part.
　また、特許文献２には、特許文献１における庇部を設けることによる問題点、即ち、庇部を設けることによりカフスサポータの軸方向の寸法が大きくなり、これに伴ってコイルのコイルエンド部の頂点までの高さが大きくなるという問題点に対応するためのサポータ治具等が開示されている。 Further, in Patent Document 2, there is a problem caused by providing the collar portion in Patent Document 1, that is, by providing the collar portion, the axial dimension of the cuff support is increased, and accordingly, the coil end portion of the coil is increased. Supporter jigs and the like for dealing with the problem that the height to the apex is increased are disclosed.
特開２００９－１６５３１２号公報JP 2009-166531 A 特開２０１６－１２７６９２号公報JP 2016-127692 A
　特許文献２に記載のサポータ治具は、本願の図１３Ａに示すサポータ治具１００のように、コア端面側の下段部の両側にコアの周方向（図で左右方向）に突出した段差部１００ａを有しており、この段差部１００ａによってできる空間にスロット紙（絶縁シート）１０２のカフス部１０２ａが収容されるようになっている。段差部１００ａの周方向の突出は、スロット１０４を区画形成するティース１０６の幅ｄに対してサポータ治具１００の幅を寸法ｔ分狭くすることにより形成されている。同図において符号１０８は同芯巻きコイルを示している。 A supporter jig described in Patent Document 2 is a stepped portion 100a that protrudes in the circumferential direction of the core (left and right in the figure) on both sides of the lower stepped portion on the core end face side, like the supporter jig 100 shown in FIG. 13A of the present application. The cuff part 102a of the slot paper (insulating sheet) 102 is accommodated in a space formed by the step part 100a. The protrusion in the circumferential direction of the stepped portion 100 a is formed by reducing the width of the support jig 100 by the dimension t with respect to the width d of the teeth 106 that define the slot 104. In the figure, reference numeral 108 denotes a concentric coil.
　なお、特許文献２に記載のステータは、平角導線を複数周巻いて略六角形状又は略八角形状に曲げ加工された同芯巻きコイル１０８をコアの径方向内側からスロット１０４内に挿入する組立構成となっている。
　このため、同芯巻きコイル１０８の挿入時に、スロット紙１０２にはコアの径方向の力（摩擦力）が主として作用する。従って、段差部１００ａによってできる空間は、特許文献１の場合と同様に、コイルの挿入時にカフス部１０２ａを径方向へ逃がして収容する空間としての意味合いが大きい。
　一方、カフス部１０２ａがコアの軸方向両側で段差部１００ａに当接することにより、サポータ治具１００は、スロット紙１０２がコアの軸方向に抜けるのを防止する機能も有していると言える。 Note that the stator described in Patent Document 2 is an assembly configuration in which a concentric winding coil 108, which is formed by winding a plurality of rectangular conductive wires and bending into a substantially hexagonal shape or a substantially octagonal shape, is inserted into the slot 104 from the radially inner side of the core. It has become.
For this reason, when the concentric winding coil 108 is inserted, a force (frictional force) in the radial direction of the core mainly acts on the slot paper 102. Therefore, the space formed by the stepped portion 100a has a large meaning as a space for accommodating the cuff portion 102a in the radial direction when the coil is inserted, as in the case of Patent Document 1.
On the other hand, it can be said that the supporter jig 100 also has a function of preventing the slot paper 102 from coming off in the axial direction of the core by the cuff portion 102a contacting the stepped portion 100a on both sides in the axial direction of the core.
　また、ステータやロータのコイルとして、このステータ又はロータの周方向に沿って配列された複数のスロットに、線材をＵ字状に曲げ加工してなる複数のコイルセグメントをそれぞれ直線的に挿入し、これらコイルセグメントの自由端側をツイスト加工して溶接等により互いに電気的に接合してコイルを形成したいわゆるセグメント型コイルも知られている。 In addition, as a coil of the stator or rotor, a plurality of coil segments formed by bending a wire rod into a U-shape are linearly inserted into a plurality of slots arranged along the circumferential direction of the stator or rotor, respectively. A so-called segment type coil is also known in which the free ends of these coil segments are twisted and electrically joined together by welding or the like to form a coil.
　上記のセグメント型コイルにおいて、コアの軸方向端面からの絶縁シートの突出量は、コイルセグメントの自由端側のツイスト加工後のコイル高さ（例えばステータの全長）に影響する。
　即ち、ツイスト加工は絶縁シートを保護した状態で行われるため、絶縁シートの突出量が大きいとコイルセグメントの自由端側の曲げ部位も必然的にコア端面からの距離が大きくなり、コイルの高さが高くなる。これは、例えばステータが収容されるモータカバーのサイズが大きくなることを意味する。
　モータカバー等のサイズは小さければ小さい程小型化への寄与が大きい。このため、自動車等の設計においては、絶縁シートの突出量を可能な限り小さく（例えば１～４ｍｍ程度）することも行われている。
　絶縁シートの突出量がこのような極小寸法となるケースではカフス部を設ける余裕が無い上に、コイルの挿入時の絶縁シートの位置ずれは殆ど許されない厳しい条件となる。 In the segment type coil described above, the protruding amount of the insulating sheet from the axial end surface of the core affects the coil height (for example, the total length of the stator) after twisting on the free end side of the coil segment.
In other words, since the twisting process is performed with the insulating sheet protected, if the protruding amount of the insulating sheet is large, the bent part on the free end side of the coil segment inevitably increases the distance from the core end surface, and the height of the coil is increased. Becomes higher. This means, for example, that the size of the motor cover in which the stator is accommodated increases.
The smaller the size of the motor cover, etc., the greater the contribution to miniaturization. For this reason, in the design of automobiles and the like, the amount of protrusion of the insulating sheet is made as small as possible (for example, about 1 to 4 mm).
In the case where the protruding amount of the insulating sheet is such a minimum size, there is no room for providing a cuff part, and the insulating sheet is hardly allowed to be displaced when the coil is inserted.
　このような条件での観点から特許文献１、２に記載された技術について考えてみると、いずれも絶縁シートがカフス部を有していることが前提となっており、且つ、コイルの押圧力が作用したときにカフス部をコアの径方向に逃がして収容する構成となっている。そのため、コイルがスロットに直線的に挿入される際の位置ずれには、カフス部無しには対応できない。
　特許文献２の構成は、上記のようにスロット紙（絶縁シート）がコアの軸方向に抜けるのをカフス部で防止する機能を有しているものの、図１３Ｂに示すように、コイル１１０が直線的にスロット１０４内に挿入される場合、スロット紙１０２は軸方向への摩擦力を受ける。 Considering the techniques described in Patent Documents 1 and 2 from the viewpoint of such conditions, both are based on the premise that the insulating sheet has a cuff portion, and the coil pressing force. The cuff part is configured to escape and accommodate in the radial direction of the core when the is acted. For this reason, it is impossible to cope with the positional deviation when the coil is linearly inserted into the slot without the cuff portion.
Although the configuration of Patent Document 2 has a function of preventing the slot paper (insulating sheet) from being pulled out in the axial direction of the core as described above, the coil 110 is linear as shown in FIG. 13B. When inserted into the slot 104, the slot paper 102 receives a frictional force in the axial direction.
　スロット紙１０２はコイル挿入方向の端面がコイル挿入域に露出しているので、コイル１１０の下端が端面に当たって軸方向に大きな力を受けることもあり、コイル１１０がスムーズにスロット内に導入された場合でも摩擦でスロット紙１０２を軸方向にずらす力が作用する。
　即ち、複数のコイル１１０の挿入部（直線部分）の直線性が均一であれば、機械で一括に保持した状態でコイルを挿入する場合、大きな摩擦力が生じる可能性は低いが、中には曲がっているコイルもあるため、その場合にはスロット紙１０２に大きな摩擦力が作用する。
　このような場合、スロット紙１０２の位置ずれを抑制するのはカフス部１０２ａと段差部１００ａとの当接による引っ掛かりであるが、カフス部１０２ａの剛性はコイル１１０が直線的に挿入された場合の摩擦力に耐え得るものではない。 Since the end face of the slot paper 102 in the coil insertion direction is exposed in the coil insertion area, the lower end of the coil 110 may hit the end face and receive a large axial force, and the coil 110 is smoothly introduced into the slot. However, a force that shifts the slot paper 102 in the axial direction due to friction acts.
In other words, if the linearity of the insertion portions (straight portions) of the plurality of coils 110 is uniform, it is unlikely that a large frictional force will occur when the coils are inserted while being held together by a machine. Since some coils are bent, a large frictional force acts on the slot paper 102 in that case.
In such a case, the displacement of the slot paper 102 is restrained by the contact between the cuff portion 102a and the stepped portion 100a. The rigidity of the cuff portion 102a is that when the coil 110 is linearly inserted. It cannot withstand frictional forces.
　したがって、特許文献１、２には、コア端面からの絶縁シートの突出量が極めて小さく、且つ、カフス部を持たない絶縁シートの軸方向の位置ずれが殆ど許されない条件下でコイルが直線的に挿入されるケースにおいて、絶縁シートの位置ずれを防止する技術は記載されていない。 Therefore, in Patent Documents 1 and 2, the coil is linearly formed under the condition that the amount of protrusion of the insulating sheet from the end face of the core is extremely small and the axial displacement of the insulating sheet having no cuff portion is hardly allowed. In the inserted case, there is no description of a technique for preventing the displacement of the insulating sheet.
　本発明は、このような現状に鑑みて創案されたもので、コア端面からの突出量が少ない構成で絶縁シートの位置ずれを高精度に抑制し、ひいてはモータ等の回転電機やトランス等の電磁機器の小型化に寄与することを目的とする。 The present invention was devised in view of such a current situation, and suppresses the displacement of the insulating sheet with high accuracy with a configuration in which the amount of protrusion from the core end face is small, and as a result, electromagnetics such as rotating electrical machines such as motors and transformers. The purpose is to contribute to miniaturization of equipment.
　本発明は上記目的を達成するために、筒状に形成された絶縁シートの軸方向の端面にコイルが直接当たらないようにするとともに、コイル挿入時に軸方向の摩擦力が生じても、絶縁シートの筒状による座屈強度で位置ずれを防止することとした。 In order to achieve the above object, the present invention prevents the coil from directly contacting the axial end surface of the cylindrical insulating sheet, and even if an axial frictional force is generated when the coil is inserted, the insulating sheet It was decided to prevent displacement by buckling strength due to the cylindrical shape.
　具体的には、コアの周方向に等間隔に配置された複数のスロットに前記コアの軸方向に沿って個別に絶縁シートが挿入された状態で前記スロットにコイルを挿入する際に、前記絶縁シートの位置ずれを防止する絶縁シートの位置ずれ防止方法であって、前記絶縁シートが、前記スロットの内周面に沿う外形に形成された絶縁シートであり、複数の棒状部材を備える棒状部材ユニットであって、前記各棒状部材が、前記各スロットの間に対応する位置に前記周方向に配列されて放射状に配置され、前記コアの径方向に移動可能であり、前記周方向の両側に突縁を有する棒状部材ユニットを、前記コアの、前記絶縁シートの挿入方向先端側に配置し、前記棒状部材ユニットの前記複数の棒状部材を前記径方向に移動させて前記各スロットの間にそれぞれ進入させ、前記コアの軸方向の端面から突出した前記絶縁シートの端縁の少なくとも一部を、前記複数の棒状部材の前記突縁でそれぞれ覆った状態で、前記スロットに前記コイルを挿入することを特徴とする。 Specifically, when the coil is inserted into the slot in a state where the insulating sheet is individually inserted along the axial direction of the core in a plurality of slots arranged at equal intervals in the circumferential direction of the core, the insulation A method for preventing misalignment of an insulating sheet for preventing misalignment of the sheet, wherein the insulating sheet is an insulating sheet formed in an outer shape along the inner peripheral surface of the slot, and a rod-shaped member unit including a plurality of rod-shaped members The rod-shaped members are arranged in the circumferential direction at the corresponding positions between the slots, are arranged radially, are movable in the radial direction of the core, and protrude on both sides in the circumferential direction. A rod-shaped member unit having an edge is disposed on the distal end side of the core in the insertion direction of the insulating sheet, and the plurality of rod-shaped members of the rod-shaped member unit are moved in the radial direction between the slots. The coil is inserted into the slot in a state where at least part of the edge of the insulating sheet protruding from the axial end surface of the core is covered with the protruding edges of the plurality of rod-shaped members, respectively. It is characterized by inserting.
　このような絶縁シートの位置ずれ防止方法において、前記棒状部材ユニットを、前記コアの軸方向の両側にそれぞれ配置し、前記コアの軸方向の両側に配置された各前記棒状部材ユニットの、前記複数の棒状部材を前記径方向に移動させて前記各スロットの間にそれぞれ進入させ、前記コアの軸方向の端面から突出した前記絶縁シートの端縁の少なくとも一部を、前記複数の棒状部材の前記突縁でそれぞれ覆った状態で、前記スロットに前記コイルを挿入するとよい。
　さらに、少なくとも１つの前記棒状部材ユニットの前記複数の棒状部材を前記径方向に移動させて前記各スロットの間にそれぞれ進入させた状態で、前記スロットに前記絶縁シートを挿入するとよい。 In such a method for preventing displacement of the insulating sheet, the plurality of rod-shaped member units are disposed on both sides of the core in the axial direction, and the plurality of the bar-shaped member units disposed on both sides of the core in the axial direction. The rod-shaped member is moved in the radial direction to enter between the slots, and at least part of the edge of the insulating sheet protruding from the end surface in the axial direction of the core is moved to the plurality of rod-shaped members. The coil may be inserted into the slot in a state covered with a protruding edge.
Furthermore, the insulating sheet may be inserted into the slot in a state where the plurality of rod-shaped members of at least one of the rod-shaped member units are moved in the radial direction and are respectively inserted between the slots.
　また、本発明の別の絶縁シートの位置ずれ防止方法は、コアの周方向に等間隔に配置された複数のスロットに前記コアの軸方向に沿って個別に絶縁シートを挿入した後、前記スロットにコイルを挿入する際に、前記絶縁シートの位置ずれを防止する絶縁シートの位置ずれ防止方法であって、前記絶縁シートが、前記スロットの内周面に沿う外形に形成された絶縁シートであり、複数の棒状部材を備える棒状部材ユニットであって、前記各棒状部材が、前記各スロットの間に対応する位置に前記周方向に配列されて放射状に配置され、前記コアの径方向に移動可能であり、前記周方向の両側に突縁を有する棒状部材ユニットを、前記コアの、前記絶縁シートの挿入方向先端側に配置し、前記コイルの挿入前に、前記棒状部材ユニットの前記複数の棒状部材を前記径方向に移動させて前記各スロットの間にそれぞれ進入させ、前記コアの軸方向の端面から突出した前記絶縁シートの端縁の少なくとも一部を、前記複数の棒状部材の前記突縁でそれぞれ覆うことを特徴とする。 Further, according to another insulating sheet misalignment prevention method of the present invention, the insulating sheet is individually inserted along the axial direction of the core into a plurality of slots arranged at equal intervals in the circumferential direction of the core, and then the slot is inserted. An insulating sheet misalignment preventing method for preventing misalignment of the insulating sheet when a coil is inserted into the insulating sheet, wherein the insulating sheet is an insulating sheet formed in an outer shape along the inner peripheral surface of the slot. A rod-like member unit comprising a plurality of rod-like members, wherein each of the rod-like members is arranged radially in the circumferential direction at a corresponding position between the slots, and is movable in the radial direction of the core A bar-shaped member unit having protruding edges on both sides in the circumferential direction is disposed on the distal end side of the core in the insertion direction of the insulating sheet, and the compound of the bar-shaped member unit is inserted before inserting the coil. The rod-shaped member is moved in the radial direction to enter between the slots, and at least part of the edge of the insulating sheet protruding from the end surface in the axial direction of the core is moved to the plurality of rod-shaped members. It is characterized by covering each with a protruding edge.
　このような絶縁シートの位置ずれ防止方法において、前記棒状部材ユニットを、前記コアの軸方向の両側にそれぞれ配置し、前記コイルの挿入前に、前記コアの軸方向の両側に配置された各前記棒状部材ユニットの、前記複数の棒状部材を前記径方向に移動させて前記各スロットの間にそれぞれ進入させ、前記コアの軸方向の端面から突出した前記絶縁シートの端縁の少なくとも一部を、前記複数の棒状部材の前記突縁でそれぞれ覆うとよい。
　また、上記の各絶縁シートの位置ずれ防止方法において、前記絶縁シートの、前記コアの軸方向に垂直な断面の形状及びサイズが、前記コアの軸方向の全長に亘って均一であるとよい。
　さらに、前記絶縁シートが、前記スロットを前記径方向で複数に区画するように一枚のシートを折り曲げて形成されているとよい。 In such a method for preventing displacement of the insulating sheet, the rod-shaped member units are respectively disposed on both sides in the axial direction of the core, and before the insertion of the coil, each of the rod-shaped member units disposed on both sides in the axial direction of the core. The rod-shaped member unit, the plurality of rod-shaped members are moved in the radial direction to enter between the slots, and at least a part of the edge of the insulating sheet protruding from the end surface in the axial direction of the core, Each of the plurality of rod-shaped members may be covered with the protruding edges.
In the above-described method for preventing displacement of each insulating sheet, the shape and size of the cross section of the insulating sheet perpendicular to the axial direction of the core may be uniform over the entire axial length of the core.
Furthermore, the insulating sheet may be formed by bending a single sheet so as to divide the slot into a plurality of slots in the radial direction.
　また、上記の各絶縁シートの位置ずれ防止方法において、前記絶縁シートの、前記スロットの内周に沿う方向の両端のうち少なくとも一方が前記スロットの前記径方向の中央部で折り曲げられ、該折り曲げられた端部により前記スロットが２つに区画されているとよい。 Further, in the above-described method for preventing displacement of each insulating sheet, at least one of both ends of the insulating sheet in the direction along the inner periphery of the slot is bent at the central portion in the radial direction of the slot. It is preferable that the slot is divided into two by the end portion.
　さらにまた、このような絶縁シートの位置ずれ防止方法において、前記絶縁シートの中央部が前記スロットの前記径方向の中央部において前記コアの軸方向に沿う線で折り曲げられて、該折り曲げられた絶縁シートにより前記スロットが２つに区画されるようにしてもよい。 Furthermore, in such a method for preventing displacement of the insulating sheet, the central portion of the insulating sheet is bent at a line along the axial direction of the core at the radial central portion of the slot, and the bent insulating material is The slot may be divided into two by a sheet.
　本発明の絶縁シートの位置ずれ防止装置は、コアの周方向に等間隔に配置された複数のスロットに個別に挿入された絶縁シートの前記コアの軸方向における位置ずれを防止する絶縁シートの位置ずれ防止装置であって、複数の棒状部材を備え、前記コアの、前記絶縁シートの挿入方向先端側に配置されている棒状部材ユニットであって、前記各棒状部材が、前記各スロットの間に対応する位置に前記周方向に配列されて放射状に配置され、前記コアの径方向に移動可能である棒状部材ユニットと、前記棒状部材ユニットの前記複数の棒状部材を同時に前記径方向に移動させる駆動機構とを備え、前記各棒状部材は、前記径方向内側への移動により前記各スロットの間に進入したときに前記コアの軸方向の端面から突出した前記絶縁シートの端縁の少なくとも一部を覆う突縁を、前記周方向の両側に有していることを特徴とする。 The insulating sheet misalignment prevention device of the present invention is a position of the insulating sheet that prevents misalignment in the axial direction of the core of the insulating sheet individually inserted into a plurality of slots arranged at equal intervals in the circumferential direction of the core. An apparatus for preventing misalignment, comprising a plurality of rod-shaped members, the rod-shaped member unit disposed on the distal end side of the core in the insertion direction of the insulating sheet, wherein each rod-shaped member is interposed between the slots. A bar-shaped member unit arranged radially in the circumferential direction at a corresponding position and movable in the radial direction of the core, and a drive for simultaneously moving the plurality of bar-shaped members of the bar-shaped member unit in the radial direction Each of the rod-shaped members of the insulating sheet protruding from the axial end surface of the core when entering between the slots by moving radially inward. At least a portion of the cover flange edges, characterized in that it has on both sides of the circumferential direction.
　このような絶縁シートの位置ずれ防止装置において、前記棒状部材ユニットを、前記コアの軸方向の両側にそれぞれ設け、前記駆動機構が、前記コアの軸方向の両側に配置された各前記棒状部材ユニットの前記複数の棒状部材を同時に前記径方向に移動させるとよい。
　さらに、前記各棒状部材が、前記突縁を有する部分を支持し前記駆動機構に接続される接続部を有しているとよい。 In such a device for preventing displacement of an insulating sheet, each of the rod-shaped member units is provided with the rod-shaped member units on both sides in the axial direction of the core, and the drive mechanism is disposed on both sides in the axial direction of the core. The plurality of rod-shaped members may be moved in the radial direction simultaneously.
Furthermore, each said rod-shaped member is good to have the connection part which supports the part which has the said protrusion, and is connected to the said drive mechanism.
　さらに、２つの前記棒状部材が、１つの前記接続部から１つのスロットを囲むように二股状に延びるように形成され、前記二股の内周側では前記突縁が該内周全体に亘って形成されているとよい。 Further, the two rod-shaped members are formed to extend in a bifurcated manner so as to surround one slot from the one connecting portion, and the protruding edge is formed over the entire inner circumference of the bifurcated portion. It is good to be.
　また、前記駆動機構は、前記各棒状部材の前記径方向の移動をガイドするガイド部材と、前記各棒状部材に連結された複数の円弧状のカム溝を有し前記コアの軸心を中心として回転することにより前記各棒状部材を前記径方向に移動させるカム部材とを有しているとよい。 The drive mechanism has a guide member that guides the radial movement of each rod-shaped member, and a plurality of arc-shaped cam grooves connected to the respective rod-shaped members, with the axis of the core as a center. It is good to have the cam member which moves each said rod-shaped member to the said radial direction by rotating.
　さらに、前記駆動機構の前記カム部材を前記周方向に回転駆動する駆動源を有するとよい。 Furthermore, it is preferable to have a drive source that rotationally drives the cam member of the drive mechanism in the circumferential direction.
　本発明によれば、コア端面からの突出量が少ない構成で絶縁シートの位置ずれを高精度に抑制でき、ひいてはモータ等の回転電機やトランス等の電磁機器の小型化に寄与できる。 According to the present invention, the displacement of the insulating sheet can be suppressed with high accuracy with a configuration with a small amount of protrusion from the end face of the core, and as a result, it is possible to contribute to miniaturization of rotating electrical machines such as motors and electromagnetic devices such as transformers.
本発明の一実施形態に係る絶縁シートの位置ずれ防止方法を説明するための図であって、ステータコアのスロットへ絶縁シートを挿入する状態を示す要部斜視図である。It is a figure for demonstrating the position shift prevention method of the insulation sheet which concerns on one Embodiment of this invention, Comprising: It is a principal part perspective view which shows the state which inserts an insulation sheet in the slot of a stator core. 図１に示した絶縁シートの拡大斜視図である。It is an expansion perspective view of the insulating sheet shown in FIG. 図１の状態から絶縁シートをスロットに挿入した状態の要部斜視図である。It is a principal part perspective view of the state which inserted the insulating sheet into the slot from the state of FIG. コアの軸方向両側に配置される位置ずれ防止ロッドを備える上部ユニットと下部ユニットを示す図で、退避位置にある状態を示す斜視図である。It is a figure which shows the upper unit and lower unit provided with the position shift prevention rod arrange | positioned at the axial direction both sides of a core, and is a perspective view which shows the state in a retracted position. 図４の状態から各位置ずれ防止ロッドがコアの径方向内側（絶縁シートの位置ずれを防止する位置）へ移動した状態の斜視図である。FIG. 5 is a perspective view of a state in which each misalignment prevention rod has moved from the state of FIG. 4 to the inside in the radial direction of the core (a position to prevent misalignment of the insulating sheet). コアの軸方向上側に配置される位置ずれ防止ロッドの形状を示す拡大斜視図である。It is an expansion perspective view which shows the shape of the position shift prevention rod arrange | positioned at the axial direction upper side of a core. コアの軸方向下側に配置される位置ずれ防止ロッドの形状を示す拡大斜視図である。It is an expansion perspective view which shows the shape of the position shift prevention rod arrange | positioned at the axial direction lower side of a core. 図６Ａで示した上側の位置ずれ防止ロッドが絶縁シートの位置ずれを防止する位置に移動したときの状態を示す要部平面図である。It is a principal part top view which shows a state when the upper position displacement prevention rod shown in FIG. 6A moves to the position which prevents the position displacement of an insulating sheet. スロットに絶縁シートを挿入した後の図７におけるVIII－VIII線に沿う拡大断面図である。It is an expanded sectional view which follows the VIII-VIII line in Drawing 7 after inserting an insulating sheet in a slot. 絶縁シートの折り曲げ形状の例を示す概要平面図である。It is a schematic plan view which shows the example of the bending shape of an insulating sheet. 絶縁シートの折り曲げ形状の別の例を示す概要平面図である。It is a schematic plan view which shows another example of the bending shape of an insulating sheet. 絶縁シートの折り曲げ形状のさらに別の例を示す概要平面図である。It is a schematic plan view which shows another example of the bending shape of an insulating sheet. 絶縁シートの折り曲げ形状のさらに別の例を示す概要平面図である。It is a schematic plan view which shows another example of the bending shape of an insulating sheet. 本発明による絶縁シートの位置ずれ防止装置の一実施形態を示す概要側面図である。It is a general | schematic side view which shows one Embodiment of the position shift prevention apparatus of the insulation sheet by this invention. 図１０に示した絶縁シートの位置ずれ防止装置の概要平面図で、位置ずれ防止ロッドが退避位置にある状態を示す図である。FIG. 11 is a schematic plan view of the insulation sheet misregistration prevention apparatus shown in FIG. 10, showing a state where the misregistration prevention rod is in a retracted position. 図１０に示した絶縁シートの位置ずれ防止装置の概要平面図で、位置ずれ防止ロッドが絶縁シートの位置ずれを防止する位置にある状態を示す図である。FIG. 11 is a schematic plan view of the insulation sheet misregistration prevention apparatus shown in FIG. 10, showing a state in which a misregistration prevention rod is in a position to prevent misalignment of the insulation sheet. 従来技術の問題点を説明するための概要断面図である。It is a schematic sectional drawing for demonstrating the problem of a prior art. 従来技術の問題点を説明するための別の概要断面図である。It is another general | schematic sectional drawing for demonstrating the problem of a prior art.
　以下、本発明の実施形態について図面を参照して説明する。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
　図１は、本発明の一実施形態に係る絶縁シートの位置ずれ防止方法を説明するための図であって、ステータコアのスロットへ絶縁シートを挿入する状態を示す要部斜視図である。
　図１に示すステータコア２（以下、「コア」といった場合、特に断らない限りこのステータコア２を指す）は、モータ等の回転電機のステータを形成する部品であり、周方向に等間隔にコイル挿入孔としての複数のスロット４が配置されている。スロット４は、ステータコア２の周方向に等間隔に形成された突極（ティース）６の、周方向に隣り合う突極６間で区画される空間である。図１ではステータコア２は一部分のみを示し、且つ、図示の都合上、軸方向の長さを本来の寸法よりもかなり短くして示している。
　各スロット４には、紙製の絶縁シート８が公知の絶縁シート挿入装置（インサータ）によりコアの軸方向から挿入される。絶縁シート８は合成樹脂製でもよい。 FIG. 1 is a view for explaining a method for preventing displacement of an insulating sheet according to an embodiment of the present invention, and is a perspective view of a main part showing a state in which the insulating sheet is inserted into a slot of a stator core.
A stator core 2 shown in FIG. 1 (hereinafter referred to as “core” unless otherwise specified) is a component that forms a stator of a rotating electrical machine such as a motor, and has coil insertion holes at equal intervals in the circumferential direction. A plurality of slots 4 are arranged. The slot 4 is a space defined between salient poles 6 adjacent to each other in the circumferential direction of salient poles (teeth) 6 formed at equal intervals in the circumferential direction of the stator core 2. In FIG. 1, only a part of the stator core 2 is shown, and for the sake of illustration, the axial length is shown to be considerably shorter than the original dimension.
A paper insulating sheet 8 is inserted into each slot 4 from the axial direction of the core by a known insulating sheet inserting device (inserter). The insulating sheet 8 may be made of synthetic resin.
　絶縁シート８は、図２に示すように、一枚の紙（例えば厚み０．１９ｍｍ）を折り曲げて外形がスロット４の内周面に沿う筒状に形成されている。絶縁シート８の周方向の（スロット４の内周に沿う方向で、スロット４への挿入方向以外の）両端８ａ、８ｂはコアの径方向の中央部で内方に折り曲げられており、スロット４内を径方向で２つに区画する形状となっている。符号８ｃは、絶縁シート８の端縁のうち、絶縁シート８がスロット４内に挿入されたときに、コアの径方向の外側となる箇所を示す。 As shown in FIG. 2, the insulating sheet 8 is formed in a cylindrical shape whose outer shape is bent along the inner peripheral surface of the slot 4 by bending a piece of paper (for example, thickness 0.19 mm). Both ends 8a and 8b in the circumferential direction of the insulating sheet 8 (in the direction along the inner periphery of the slot 4 and other than the insertion direction into the slot 4) are bent inward at the center in the radial direction of the core. The inside is divided into two in the radial direction. Reference numeral 8 c denotes a portion of the edge of the insulating sheet 8 that is outside the core in the radial direction when the insulating sheet 8 is inserted into the slot 4.
　本実施形態では、後述するように８層のコイルを挿入する例を示しており、絶縁シート８の径方向内側空間８Ａにコイルの１～４層目が挿入され、径方向外側空間８Ｂにコイルの５～８層目が挿入される。
　スロット４への絶縁シート８の挿入によって、ステータコア２とコイルとの間の絶縁が確保される。更に絶縁シート８を、スロット４内を２つに区画する形状とすることにより、スロット４に挿入されたコイルの１～４層目群と５～８層目群間の絶縁性を確保することができる。ここでは絶縁シート８を、スロット４を径方向で２つに区画するように形成しているが、３つ以上に区画するように形成してもよい。 In the present embodiment, as will be described later, an example in which an eight-layer coil is inserted is shown. The first to fourth layers of the coil are inserted into the radially inner space 8A of the insulating sheet 8, and the coil is inserted into the radially outer space 8B. The fifth to eighth layers are inserted.
By inserting the insulating sheet 8 into the slot 4, insulation between the stator core 2 and the coil is ensured. Further, by forming the insulating sheet 8 into a shape that divides the inside of the slot 4 into two, the insulation between the first to fourth layer groups and the fifth to eighth layer groups of the coil inserted into the slot 4 is ensured. Can do. Here, the insulating sheet 8 is formed so as to divide the slot 4 into two in the radial direction, but may be formed so as to divide into three or more.
　本実施形態で使用する絶縁シート８は、軸方向端部を折り曲げたカフス部を有しておらず、コアの軸方向に垂直な断面の形状及びサイズが、コアの軸方向の全長に亘って均一である、カフス部レスの絶縁シートである。既に知られている通り、絶縁シートのカフス部は、コア端面に当接して絶縁シートがスロットから抜けるのを防止する機能を有しているが、本実施形態で使用する絶縁シート８はカフス部を有していないため、絶縁シート自体は位置ずれ防止機能を有していない。
　絶縁シート８の図２に示した折り曲げ形状は、絶縁性の確保の他に、コアの軸方向からスロット４に直線状にコイルを挿入する際に絶縁シート８とコイル間に生じる摩擦力に対する絶縁シート８の座屈強度の向上を担っている。この点については後述する。 The insulating sheet 8 used in the present embodiment does not have a cuff part obtained by bending the end portion in the axial direction, and the shape and size of the cross section perpendicular to the axial direction of the core extends over the entire length in the axial direction of the core. It is a uniform, cuff-less insulating sheet. As already known, the cuff part of the insulating sheet has a function of preventing the insulating sheet from coming out of the slot by contacting the end surface of the core, but the insulating sheet 8 used in this embodiment is a cuff part. Therefore, the insulating sheet itself does not have a position shift prevention function.
The bent shape shown in FIG. 2 of the insulating sheet 8 is not only to ensure insulation, but also to insulate against the frictional force generated between the insulating sheet 8 and the coil when the coil is linearly inserted into the slot 4 from the axial direction of the core. The buckling strength of the seat 8 is improved. This point will be described later.
　図３は、ステータコア２のスロット４に絶縁シート８を挿入した後の状態、即ちコイル挿入前の絶縁シート８のセット完了状態を示している。絶縁シート８はその軸方向の端部がステータコア２の端面から僅かに突出した状態に挿入、セットされる。ステータコア２の端面からの突出量ｐは、例えば１～４ｍｍ程度である。 FIG. 3 shows a state after the insulating sheet 8 is inserted into the slot 4 of the stator core 2, that is, a state where the setting of the insulating sheet 8 before the coil is inserted is completed. The insulating sheet 8 is inserted and set in a state in which the end portion in the axial direction slightly protrudes from the end surface of the stator core 2. The protruding amount p from the end face of the stator core 2 is, for example, about 1 to 4 mm.
　絶縁シート８は各スロット４に公知のインサータで個別に挿入されるが、ステータコア２の端面からの突出量ｐが均一となるとは限らない。ステータコア２を含むステータをより小型化し、ひいてはそのステータ用いて構成するモータ等の回転電機をより小型化するために、インサータで挿入後、平坦なプレートで絶縁シート８を押圧して突出量ｐを均一にする工程を設けてもよい。
　図３ではステータコア２の上面側における絶縁シート８の突出状態を示しているが、ステータコア２の下面側においても絶縁シート８の突出量は同程度である。また、１つのスロット４に対して１つの絶縁シート８が挿入された状態を示しているが、全てのスロット４に同様に絶縁シート８が挿入される。 The insulating sheet 8 is individually inserted into each slot 4 by a known inserter, but the protruding amount p from the end face of the stator core 2 is not always uniform. In order to further reduce the size of the stator including the stator core 2 and thus further reduce the size of the rotating electrical machine such as a motor formed by using the stator, after inserting with the inserter, the insulating sheet 8 is pressed with a flat plate so that the protruding amount p is You may provide the process made uniform.
Although FIG. 3 shows the protruding state of the insulating sheet 8 on the upper surface side of the stator core 2, the protruding amount of the insulating sheet 8 is about the same on the lower surface side of the stator core 2. In addition, although one insulating sheet 8 is inserted into one slot 4, the insulating sheet 8 is inserted into all slots 4 in the same manner.
　図４に示すように、コアの軸方向の両側に、それぞれ絶縁シート８の軸方向の位置ずれを防止するための上部ユニット１０と下部ユニット１２が配置される。
　上部ユニット１０は、図３に示した各スロット４の間に対応する位置に、コアの周方向に配列されて放射状に配置されるとともに、スロット４間をコアの径方向に移動可能に設けられた複数の位置ずれ防止ロッド１４を備える。
　下部ユニット１２も同様に、各スロット４の間に対応する位置に、コアの周方向に配列されて放射状に配置されるとともに、スロット４間をコアの径方向に移動可能に設けられた複数の位置ずれ防止ロッド１６を備える。
　これらの上部ユニット１０及び下部ユニット１２が、コアの軸方向の両側にそれぞれ配置される棒状部材ユニットである。また、後述するように、位置ずれ防止ロッド１４、１６の各先端部に設けた凸部が棒状部材に該当する。 As shown in FIG. 4, an upper unit 10 and a lower unit 12 for preventing axial displacement of the insulating sheet 8 are disposed on both sides of the core in the axial direction.
The upper unit 10 is arranged radially in the circumferential direction of the core at a position corresponding to between the slots 4 shown in FIG. 3, and is provided so as to be movable between the slots 4 in the radial direction of the core. A plurality of misalignment prevention rods 14 are provided.
Similarly, the lower unit 12 is arranged radially at the positions corresponding to the spaces between the slots 4 in the circumferential direction of the core, and is provided between the slots 4 so as to be movable in the radial direction of the core. A misalignment prevention rod 16 is provided.
These upper unit 10 and lower unit 12 are rod-like member units respectively disposed on both sides of the core in the axial direction. Further, as will be described later, the convex portions provided at the tip portions of the misregistration prevention rods 14 and 16 correspond to the rod-shaped members.
　図４は、各スロット４への絶縁シート８の挿入が完了した直後の状態を示しており、この時点では上部ユニット１０の各位置ずれ防止ロッド１４と下部ユニット１２の各位置ずれ防止ロッド１６は径方向の外側に退避した退避位置（初期位置）にある。この退避位置においては、各位置ずれ防止ロッド１４、１６はスロット４への絶縁シート８の挿入の妨げにならないので、絶縁シート８の挿入前に上部ユニット１０及び下部ユニット１２を配置してもよい。しかし、絶縁シート８の挿入自体は上部ユニット１０及び下部ユニット１２がなくても実行可能であるので、絶縁シート８の挿入後に上部ユニット１０及び下部ユニット１２を配置してもよい。 FIG. 4 shows a state immediately after the insertion of the insulating sheet 8 into each slot 4 is completed. At this time, the position shift prevention rods 14 of the upper unit 10 and the position shift prevention rods 16 of the lower unit 12 are It is in the retracted position (initial position) retracted to the outside in the radial direction. In this retracted position, the misalignment prevention rods 14 and 16 do not hinder the insertion of the insulating sheet 8 into the slot 4. Therefore, the upper unit 10 and the lower unit 12 may be disposed before the insulating sheet 8 is inserted. . However, since the insertion of the insulating sheet 8 itself can be performed without the upper unit 10 and the lower unit 12, the upper unit 10 and the lower unit 12 may be disposed after the insulating sheet 8 is inserted.
　各スロット４への絶縁シート８の挿入が完了すると、図５に示すように、後述する駆動機構により各位置ずれ防止ロッド１４と各位置ずれ防止ロッド１６とを同時に径方向内側に移動させる。これにより、各位置ずれ防止ロッド１４、１６の先端部が各スロット４の間に進入し、絶縁シートの位置ずれを防止する位置へ移動する。 When the insertion of the insulating sheet 8 into each slot 4 is completed, as shown in FIG. 5, each displacement prevention rod 14 and each displacement prevention rod 16 are simultaneously moved radially inward by a drive mechanism described later. Thereby, the front-end | tip part of each position shift prevention rod 14 and 16 approachs between each slot 4, and moves to the position which prevents the position shift of an insulating sheet.
　上部ユニット１０における位置ずれ防止ロッド１４は、図６Ａに示すように、スロット４間に進入する先端部１４Ａと、該先端部１４Ａを支持し後述の駆動機構に接続される接続部１４Ｂとを有している。
　先端部１４Ａは、それぞれスロット４間に進入する２本の棒状部材である凸部１４Ａ１、１４Ａ２を有している。即ち、位置ずれ防止ロッド１４は、１つの接続部１４Ｂと、該１つの接続部１４Ｂから１つのスロット４を囲むように二股状に延びる凸部１４Ａ１、１４Ａ２とを有している。 As shown in FIG. 6A, the misalignment prevention rod 14 in the upper unit 10 has a front end portion 14A that enters between the slots 4, and a connection portion 14B that supports the front end portion 14A and is connected to a drive mechanism described later. is doing.
The tip portion 14A has convex portions 14A1 and 14A2 which are two rod-like members that enter between the slots 4, respectively. That is, the misalignment prevention rod 14 has one connection portion 14B and convex portions 14A1 and 14A2 extending in a bifurcated manner so as to surround one slot 4 from the one connection portion 14B.
　各凸部１４Ａ１、１４Ａ２は、スロット４の間に進入したときに、コアの軸方向端面から突出した、カフス部レスの絶縁シート８の上端縁の一部（コアの周方向で見た片方の端縁）をそれぞれ覆う突縁１４Ａ１ａ、１４Ａ２ａを、コアの周方向で見た両側に有している。二股の内周側では突縁１４Ａ１ａと突縁１４Ａ２ａとが連なっており、突縁が二股の内周全体に亘って形成されている。
　先端部１４Ａの各凸部１４Ａ１、１４Ａ２の、コアの周方向で見た両側にはそれぞれ、突縁１４Ａ１ａ、１４Ａ２ａによって、絶縁シート８の上端縁の片側を収容する、絶縁シート８の挿入方向に平行な側壁と、該挿入方向に略垂直な天井面とを持つ凹部が形成される。
　図６Ａにおいて、符号１４Ｂａは、駆動機構に連結するための後述する図１０に示すカムフォロア３８の軸３８ａの挿入孔を示している。 Each of the convex portions 14A1 and 14A2 protrudes from the axial end surface of the core when entering between the slots 4, and is a part of the upper edge of the cuff portion-less insulating sheet 8 (one side viewed in the circumferential direction of the core). The edges 14A1a and 14A2a that respectively cover the edges are provided on both sides of the core in the circumferential direction. The projecting edge 14A1a and the projecting edge 14A2a are connected to each other on the inner periphery of the fork, and the projecting edge is formed over the entire inner periphery of the fork.
In the insertion direction of the insulating sheet 8 that accommodates one side of the upper edge of the insulating sheet 8 by the projecting edges 14A1a and 14A2a on both sides of the convex portions 14A1 and 14A2 of the distal end portion 14A viewed in the circumferential direction of the core, respectively. A recess having a parallel side wall and a ceiling surface substantially perpendicular to the insertion direction is formed.
6A, reference numeral 14Ba indicates an insertion hole of a shaft 38a of the cam follower 38 shown in FIG. 10 to be described later for connection to the drive mechanism.
　下部ユニット１２における位置ずれ防止ロッド１６も同様の構成となっている。即ち、図６Ｂに示すように、位置ずれ防止ロッド１６は、スロット４間に進入する先端部１６Ａと、該先端部１６Ａを支持し後述の駆動機構に接続される接続部１６Ｂとを有している。
　先端部１６Ａは、それぞれスロット４の間に進入する２本の棒状部材である凸部１６Ａ１、１６Ａ２を有している。即ち、位置ずれ防止ロッド１６は、１つの接続部１６Ｂと、該１つの接続部１６Ｂから１つのスロット４を囲むように二股状に延びる凸部１６Ａ１、１６Ａ２とを有している。 The misalignment prevention rod 16 in the lower unit 12 has the same configuration. That is, as shown in FIG. 6B, the misalignment prevention rod 16 has a tip portion 16A that enters between the slots 4, and a connection portion 16B that supports the tip portion 16A and is connected to a drive mechanism described later. Yes.
The distal end portion 16A has convex portions 16A1 and 16A2 which are two rod-shaped members that enter between the slots 4, respectively. That is, the misalignment prevention rod 16 has one connection portion 16B and convex portions 16A1 and 16A2 extending in a bifurcated manner so as to surround one slot 4 from the one connection portion 16B.
　各凸部１６Ａ１、１６Ａ２は、スロット４の間に進入したときに、ステータコア２の軸方向端面から突出した、カフス部レスの絶縁シート８の下端縁の一部（コアの周方向で見た片方の端縁）をそれぞれ覆う突縁１６Ａ１ａ、１６Ａ２ａを、コアの周方向で見た両側に有している。二股の内周側では突縁１６Ａ１ａと突縁１６Ａ２ａとが連なっており、突縁が二股の内周全体に亘って形成されている。
　先端部１６Ａの各凸部１６Ａ１、１６Ａ２の、コアの周方向で見た両側にはそれぞれ、突縁１６Ａ１ａ、１６Ａ２ａによって絶縁シート８の下端縁の片側を収容する、絶縁シート８の挿入方向に平行な側壁と、該挿入方向に略垂直な底面とを持つ凹部が形成される。
　図６Ｂにおいて、符号１６Ｂａは、駆動機構に連結するための後述する図１０に示すカムフォロア４４の軸４４ａの挿入孔を示している。 Each convex portion 16A1, 16A2 protrudes from the axial end surface of the stator core 2 when entering between the slots 4 and is part of the lower end edge of the cuff portion-less insulating sheet 8 (one side viewed in the circumferential direction of the core). The edges 16A1a and 16A2a that respectively cover the edges of the core are seen on both sides when viewed in the circumferential direction of the core. The projecting edge 16A1a and the projecting edge 16A2a are connected to each other on the inner periphery of the fork, and the projecting edge is formed over the entire inner periphery of the fork.
Parallel to the insertion direction of the insulating sheet 8 that accommodates one side of the lower end edge of the insulating sheet 8 by the protruding edges 16A1a and 16A2a on both sides of the convex portions 16A1 and 16A2 of the distal end portion 16A as viewed in the circumferential direction of the core. A recess having a side wall and a bottom surface substantially perpendicular to the insertion direction is formed.
6B, reference numeral 16Ba denotes an insertion hole for the shaft 44a of the cam follower 44 shown in FIG. 10 to be described later for connection to the drive mechanism.
　上部ユニット１０の位置ずれ防止ロッド１４がコアの径方向内側へ移動すると、図７に示すように、各位置ずれ防止ロッド１４はコアの周方向に密接する。このため、各位置ずれ防止ロッド１４における各凸部１４Ａ１、１４Ａ２（隣接する突極６，６の上に位置する）の、二股の外側にも、隣の位置ずれ防止ロッド１４の凸部との間で、二股部の内周におけるものと同様な、隣接する凸部間の内周全体に亘る突縁が形成される。
　これにより、絶縁シート８の、コアの周方向で見た両側の端縁だけでなく、図２に示す径方向外側の端縁８ｃも突縁で覆われることになる。
　下部ユニット１２の位置ずれ防止ロッド１６においても同様である。 When the displacement prevention rod 14 of the upper unit 10 moves inward in the radial direction of the core, as shown in FIG. 7, each displacement prevention rod 14 comes into close contact with the circumferential direction of the core. For this reason, the convex portions 14A1 and 14A2 (located on the adjacent salient poles 6 and 6) of each misalignment prevention rod 14 are also connected to the convex portions of the adjacent misalignment prevention rod 14 on the outer side of the fork. In the meantime, similar to the one on the inner circumference of the bifurcated portion, a protruding edge is formed over the entire inner circumference between the adjacent convex portions.
Thereby, not only the edge of the both sides of the insulating sheet 8 seen in the circumferential direction of the core but also the radially outer edge 8c shown in FIG. 2 is covered with the protruding edge.
The same applies to the misalignment prevention rod 16 of the lower unit 12.
　図８は、絶縁シート８をスロット４に挿入した後の図７のVIII－VIII線に沿う断面図である。図８には、スロット４の３つ分の幅の部分のみを示している。なお、下記に示す具体的寸法はあくまでも一例である。
　位置ずれ防止ロッド１４の突縁１４Ａ１ａ、１４Ａ２ａ間の内幅ｗ１は、隣接する突極（ティース）６，６間のスロット４に挿入された絶縁シート８の上端縁を突縁１４Ａ１ａ、１４Ａ２ａで覆うことができるように、スロット４の幅（絶縁シート８の外形の幅でもある）ｗ２よりも僅かに狭く設定されている。
　図６Ａに示した先端部１４Ａの各凸部１４Ａ１、１４Ａ２はコイル挿入時のガイドとなる。即ち、本実施形態では平角線をＵ字状に折り曲げて形成されたコイルセグメントの一対の直線部（スロット挿入部）が直線状に移動しながらスロット４に挿入されるが、凸部１４Ａ１、１４Ａ２は該直線部をスロット４に挿入する際の開口部を形成する。 FIG. 8 is a cross-sectional view taken along line VIII-VIII in FIG. 7 after the insulating sheet 8 is inserted into the slot 4. FIG. 8 shows only the width of three slots 4. The specific dimensions shown below are merely examples.
The inner width w1 between the projecting edges 14A1a and 14A2a of the misalignment prevention rod 14 covers the upper edge of the insulating sheet 8 inserted into the slot 4 between the adjacent salient poles (teeth) 6 and 6 with the projecting edges 14A1a and 14A2a. Therefore, the width of the slot 4 (which is also the width of the outer shape of the insulating sheet 8) w2 is set to be slightly narrower.
Each convex part 14A1 and 14A2 of the front-end | tip part 14A shown to FIG. 6A becomes a guide at the time of coil insertion. That is, in this embodiment, a pair of straight portions (slot insertion portions) of a coil segment formed by bending a rectangular wire into a U shape is inserted into the slot 4 while moving linearly, but the convex portions 14A1, 14A2 Forms an opening when the straight portion is inserted into the slot 4.
　そこで、先端部１４Ａの凸部１４Ａ１、１４Ａ２はコイルの挿入を円滑にするため、上面（コイル挿入側の面）が凸曲面に形成されている。絶縁シート８の上端縁は突縁１４Ａ１ａ、１４Ａ２ａで覆われているので、コイルの挿入方向先端が絶縁シート８の上端縁に当たることが防止される。
　突縁１４Ａ１ａ、１４Ａ２ａ間の内幅ｗ１はスロット４に挿入されるコイルの幅を制限することになるので、占積率の観点から、突縁１４Ａ１ａ、１４Ａ２ａの、コアの周方向への突出量は、絶縁シート８の端縁を覆って軸方向の移動を防止するに必要な最低限の量となる。 Therefore, the convex portions 14A1 and 14A2 of the tip portion 14A have a convex curved surface on the upper surface (surface on the coil insertion side) in order to facilitate coil insertion. Since the upper end edge of the insulating sheet 8 is covered with the projecting edges 14A1a and 14A2a, the leading end of the coil in the insertion direction is prevented from hitting the upper end edge of the insulating sheet 8.
Since the inner width w1 between the projecting edges 14A1a and 14A2a limits the width of the coil inserted into the slot 4, the projecting amounts of the projecting edges 14A1a and 14A2a in the circumferential direction of the core from the viewpoint of the space factor Is the minimum amount necessary to cover the edge of the insulating sheet 8 and prevent axial movement.
　本実施形態における突縁１４Ａ１ａ、１４Ａ２ａの周方向への突出量は、凸部１４Ａ１、１４Ａ２のコイルの挿入方向（コアの軸方向）に平行な側壁から先端までが０．４２ｍｍで、スロット４の端から先端までは０．２７ｍｍである。従って、スロット４に挿入された絶縁シート８の端縁を覆う余裕寸法をＲとすると、
　Ｒ＝０．２７ｍｍ－０．１９ｍｍ（絶縁シートの厚み）＝０．０８ｍｍ
と、非常に小さいが、この程度でも十分な機能を発揮できる。
　下部ユニット１２の位置ずれ防止ロッド１６においても同様である。 In the present embodiment, the protrusions 14A1a and 14A2a protrude in the circumferential direction from the side wall parallel to the coil insertion direction (axial direction of the core) of the protrusions 14A1 and 14A2 to 0.42 mm. The distance from the end to the end is 0.27 mm. Therefore, if the margin dimension covering the edge of the insulating sheet 8 inserted into the slot 4 is R,
R = 0.27 mm−0.19 mm (insulating sheet thickness) = 0.08 mm
Although it is very small, even this level can exhibit a sufficient function.
The same applies to the misalignment prevention rod 16 of the lower unit 12.
　本実施形態では、ステータコア２の上面からの絶縁シート８の突出量ｄ１は２．８ｍｍ、ステータコア２の下面からの絶縁シート８の突出量ｄ２は２ｍｍである。
　突縁１４Ａ１ａ、１４Ａ２ａと絶縁シート８の上端との間には僅かな隙間ｇ（ここでは０．２ｍｍ）が存在する。従って、各スロット４に絶縁シート８が挿入・セットされた後、上部ユニット１０の各位置ずれ防止ロッド１４が径方向内側へ移動する際、先端部１４Ａは絶縁シート８にほぼ非接触の状態でスロット４の間に進入することができる。 In this embodiment, the protruding amount d1 of the insulating sheet 8 from the upper surface of the stator core 2 is 2.8 mm, and the protruding amount d2 of the insulating sheet 8 from the lower surface of the stator core 2 is 2 mm.
A slight gap g (0.2 mm in this case) exists between the projecting edges 14A1a and 14A2a and the upper end of the insulating sheet 8. Therefore, after each insulating sheet 8 is inserted and set in each slot 4, when each position shift prevention rod 14 of the upper unit 10 moves inward in the radial direction, the tip end portion 14 </ b> A is in a substantially non-contact state with the insulating sheet 8. It is possible to enter between the slots 4.
　換言すれば、隙間ｇが存在することにより、各位置ずれ防止ロッド１４の移動によってセット済みの絶縁シート８が変形したり位置がずれたりすることはない。
　同様の観点から、先端部１４Ａの凸部１４Ａ１、１４Ａ２の、コアの周方向で見た幅は、突極（ティース）６の同方向の幅よりも若干狭くしている。下部ユニット１２の位置ずれ防止ロッド１６においても同様である。 In other words, the presence of the gap g prevents the set insulating sheet 8 from being deformed or displaced due to the movement of each misalignment prevention rod 14.
From the same viewpoint, the width of the protrusions 14A1 and 14A2 of the tip end portion 14A viewed in the circumferential direction of the core is slightly narrower than the width of the salient pole (tooth) 6 in the same direction. The same applies to the misalignment prevention rod 16 of the lower unit 12.
　スロット４にその上方からコイルが直線状に挿入される際、コイルが絶縁シート８に接触して絶縁シート８を下方に押す摩擦力Ｆ１が生じる可能性がある。コイルセグメントの一対のスロット挿入部の直線性は全てのコイルセグメントにおいて均一であるとは限らず、中には曲がったものも存在するためである。
　複数のコイルセグメントは１つのコイルを形成するように組付けられた状態で各スロットに一括（略半数ずつの部分的一括を含む）で挿入されるため、スロット挿入部が曲がっていると絶縁シート８に当接して摩擦力Ｆ１を生じさせ易い。 When the coil is linearly inserted from above into the slot 4, there is a possibility that a frictional force F <b> 1 is generated in which the coil contacts the insulating sheet 8 and pushes the insulating sheet 8 downward. This is because the linearity of the pair of slot insertion portions of the coil segment is not always uniform in all the coil segments, and some of them are bent.
A plurality of coil segments are inserted into each slot in a state of being assembled so as to form one coil (including a partial package of approximately half of each), so that if the slot insertion portion is bent, an insulating sheet 8 and easily generate a frictional force F1.
　しかしこの場合でも、絶縁シート８は、下端が下部ユニット１２の位置ずれ防止ロッド１６の先端部１６Ａの凸部１６Ａ１，１６Ａ２に設けられた突縁１６Ａ１ａ、１６Ａ２ａに当たるため、それ以上の位置ずれは生じない。
　図２によって説明したように、絶縁シート８は筒状に形成され、且つ、スロット４を２つに区画する形状に折り曲げられている。これによって絶縁シート８の座屈強度が一層高められており、コイル挿入時の摩擦力Ｆ１に抗して位置ずれや変形が防止できる。絶縁シート８の下端側から上端側に向っての摩擦力Ｆ２が作用するケースにおいても、絶縁シート８の上端が突縁１４Ａ１ａ、１４Ａ２ａに当たるため、同様に位置ずれや変形が防止できる。 However, even in this case, since the lower end of the insulating sheet 8 hits the protruding edges 16A1a and 16A2a provided on the convex portions 16A1 and 16A2 of the tip portion 16A of the positional deviation prevention rod 16 of the lower unit 12, further positional deviation occurs. Absent.
As described with reference to FIG. 2, the insulating sheet 8 is formed in a cylindrical shape and is bent into a shape that divides the slot 4 into two. As a result, the buckling strength of the insulating sheet 8 is further increased, and displacement and deformation can be prevented against the frictional force F1 when the coil is inserted. Even in the case where the frictional force F2 from the lower end side to the upper end side of the insulating sheet 8 acts, the upper end of the insulating sheet 8 hits the projecting edges 14A1a and 14A2a.
　上記の寸法例及び図８から明らかなように、突縁１４Ａ１ａ、１４Ａ２ａ、１６Ａ１ａ、１６Ａ２ａの存在によって形成される凹部は、従来技術のようにカフス部をコアの径方向に逃がすために設けられたものではない。
　その凹部は、上記のように、あくまでも各位置ずれ防止ロッド１４、１６の移動によってセット済みの絶縁シート８が変形したり位置がずれたりするのを防止するための寸法設定から生じた結果である。
　絶縁シート８の端縁を覆う余裕寸法Ｒが０．０８ｍｍ程度しかないことからも明らかなように、コイルの占積率の低下を抑制しつつ絶縁シート８の軸方向両側の位置ずれを突縁で規制し、スロット４内にコイルが挿入された後の摩擦力による位置ずれには、絶縁シート８の座屈強度で対抗する構造である。 As is clear from the above dimension example and FIG. 8, the recess formed by the presence of the projecting edges 14A1a, 14A2a, 16A1a, and 16A2a is provided to allow the cuff part to escape in the radial direction of the core as in the prior art. It is not a thing.
As described above, the concave portion is a result resulting from the dimension setting for preventing the set insulating sheet 8 from being deformed or displaced due to the movement of the respective misalignment prevention rods 14 and 16. .
As is clear from the fact that the margin R covering the edge of the insulating sheet 8 is only about 0.08 mm, the positional deviation of both sides of the insulating sheet 8 in the axial direction is suppressed while suppressing the reduction of the coil space factor. In this structure, the displacement due to the frictional force after the coil is inserted into the slot 4 is countered by the buckling strength of the insulating sheet 8.
　一対のスロット挿入部がスロット４に挿入されたＵ字状コイルセグメントの挿入方向先端部は、ステータコア２の端面から突出し、その突出した部分はツイストされて溶接等により電気的に接合される。
　絶縁シート８のコア端面からの突出量が大きいと、コア端面からツイスト部までの高さが高くなって軸方向のコイル高さが大きくなり、モータ等の小型化を阻害する。Ｕ字状コイルセグメントにおいて一対のスロット挿入部を連結する連結部が配置される側においても同様のことが言える。 The distal end portion of the U-shaped coil segment in which the pair of slot insertion portions are inserted into the slot 4 protrudes from the end surface of the stator core 2, and the protruding portion is twisted and electrically joined by welding or the like.
If the protruding amount of the insulating sheet 8 from the core end surface is large, the height from the core end surface to the twisted portion is increased and the axial coil height is increased, which hinders downsizing of the motor and the like. The same can be said on the side where the connecting portion for connecting the pair of slot insertion portions is arranged in the U-shaped coil segment.
　この問題に対処すべく、絶縁シート８の軸方向端部の形状をカフス部レスとしてコア端面からの突出量を極力小さくした場合、ステータコア２とコイルとの間の良好な絶縁性を維持するためには絶縁シート８の軸方向の位置ずれは殆ど許されない。
　突縁１４Ａ１ａ、１４Ａ２ａと絶縁シート８の上端との間の隙間ｇ（０．２ｍｍ）は、このような条件を満たす観点から設定されている。
　即ち、隙間ｇの大きさは、位置ずれ防止ロッド１４、１６が絶縁シート８の端縁を覆う位置に移動する際に、絶縁シート８と接触して該絶縁シート８の位置ずれや変形を来たさないようにし、且つ、コイル挿入時の摩擦力で僅かにずれても、ステータコア２とコイルとの間の絶縁性を維持できる大きさである。 In order to cope with this problem, in order to maintain good insulation between the stator core 2 and the coil when the shape of the end portion in the axial direction of the insulating sheet 8 is cuffless and the protrusion amount from the core end surface is minimized. In this case, the displacement of the insulating sheet 8 in the axial direction is hardly allowed.
The gap g (0.2 mm) between the projecting edges 14A1a, 14A2a and the upper end of the insulating sheet 8 is set from the viewpoint of satisfying such a condition.
That is, the size of the gap g is such that when the displacement prevention rods 14 and 16 move to a position covering the edge of the insulation sheet 8, the insulation sheet 8 comes into contact with the displacement and deformation. The size is such that the insulation between the stator core 2 and the coil can be maintained even if it is slightly displaced by the frictional force when inserting the coil.
　本実施形態では、上記のように絶縁シート８の上下端縁の少なくとも一部を突縁で覆ってコイルが直接絶縁シート８の端縁に当たるのを防止し、且つ、コイル挿入時に生じ得る摩擦力には絶縁シート８の座屈強度で対抗する位置ずれ防止構造としたので、僅かな位置ずれも許されないカフス部レスの絶縁シート８の位置ずれを高精度に防止できる。
　このため、絶縁シート８のコア端面からの突出量を可能な限り小さくでき、モータ等の小型化に寄与することができる。 In the present embodiment, as described above, at least a part of the upper and lower edges of the insulating sheet 8 is covered with the protruding edges to prevent the coil from directly hitting the edge of the insulating sheet 8, and the frictional force that can be generated when the coil is inserted. Since the position shift prevention structure is opposed to the buckling strength of the insulation sheet 8, it is possible to prevent the position shift of the cuff portion-less insulation sheet 8 which does not allow a slight position shift with high accuracy.
For this reason, the protrusion amount from the core end surface of the insulating sheet 8 can be made as small as possible, and it can contribute to size reduction of a motor or the like.
　絶縁シート８の折り曲げ形状は、図２に示した形状に限定されない。
　例えば、図９Ａに示すように、絶縁シート８の周方向の先端を折り曲げずにスロット４内を区画しない形状としてもよい。図９Ａにおいて符号Ｌ１～Ｌ８は、ステータコア２の最内径側の１層目から順番に最外径側の８層目までの各コイルを示している。
　また、図９Ｂに示すように、絶縁シート８の周方向の両端８ａ，８ｂのうちいずれか一方（図示の例では一端８ａ）のみを折り曲げて、スロット４内を２つに区画する形状としてもよい。 The bent shape of the insulating sheet 8 is not limited to the shape shown in FIG.
For example, as shown in FIG. 9A, the slot 4 may not be partitioned without bending the circumferential tip of the insulating sheet 8. In FIG. 9A, reference numerals L1 to L8 denote coils from the first innermost layer of the stator core 2 to the outermost eighth layer in order.
Further, as shown in FIG. 9B, only one of the circumferential ends 8a and 8b of the insulating sheet 8 (one end 8a in the illustrated example) is bent so that the slot 4 is divided into two. Good.
　さらにまた、図９Ｃに示すように、絶縁シート８の中央部を、スロット４の、コアの径方向で見た中央部で折り曲げてその折り曲げ部によりスロット４を２つに区画し、絶縁シート８の両端８ａ、８ｂをそれぞれ、コアの周方向で見てスロット４の反対側に位置させる形状にしてもよい。この場合、図９Ｄに示すように、更に絶縁シート８の周方向の両端８ａ、８ｂを折り曲げて、中央の区画部位が３重になる形状としてもよい。 Furthermore, as shown in FIG. 9C, the central portion of the insulating sheet 8 is bent at the central portion of the slot 4 as viewed in the radial direction of the core, and the slot 4 is divided into two by the bent portion. Both ends 8a and 8b may be shaped to be positioned on the opposite side of the slot 4 when viewed in the circumferential direction of the core. In this case, as shown in FIG. 9D, both ends 8a and 8b in the circumferential direction of the insulating sheet 8 may be further bent so that the central partition portion is tripled.
　次に、図１０～図１２を参照して、本発明の一実施形態に係る絶縁シートの位置ずれ防止装置の詳細について説明する。
　図１０に示すように、この絶縁シートの位置ずれ防止装置３０は、上述した棒状部材ユニットである上部ユニット１０及び下部ユニット１２を備え、さらに、その上部ユニット１０の各位置ずれ防止ロッド１４と下部ユニット１２の各位置ずれ防止ロッド１６とを、コアの径方向に移動させる駆動機構３４等を備えている。 Next, with reference to FIG. 10 to FIG. 12, the details of the insulating sheet misregistration preventing apparatus according to an embodiment of the present invention will be described.
As shown in FIG. 10, the insulation sheet misregistration prevention device 30 includes the upper unit 10 and the lower unit 12 which are the rod-shaped member units described above, and each misregistration prevention rod 14 and the lower unit of the upper unit 10. A drive mechanism 34 and the like for moving each misalignment prevention rod 16 of the unit 12 in the radial direction of the core are provided.
　駆動機構３４は、図１０及び図１１に示すように、各位置ずれ防止ロッド１４の上面を覆う環状の上カバー３６と、位置ずれ防止ロッド１４の下側に配置され、位置ずれ防止ロッド１４の、コアの径方向の移動をガイドするガイド溝を複数放射状に有する環状の上ガイド部材３７とを備えている。
　そのガイド部材３７の下側の凹部には環状の上カム部材４０が収容され、その上カム部材４０は、位置ずれ防止ロッド１４に固定されたカムフォロア３８が嵌合する円弧状のカム溝４０ａを複数放射状に有している。
　図１１及び図１２において、符号５２は駆動機構３４を支持するベース部材を示している（図１０では省略）。 As shown in FIGS. 10 and 11, the driving mechanism 34 is disposed on the lower side of the annular displacement prevention rod 14 and the annular upper cover 36 that covers the upper surface of each displacement prevention rod 14. And an annular upper guide member 37 having a plurality of radial guide grooves for guiding the radial movement of the core.
An annular upper cam member 40 is accommodated in the lower recess of the guide member 37, and the upper cam member 40 has an arcuate cam groove 40 a into which a cam follower 38 fixed to the misalignment prevention rod 14 is fitted. It has a plurality of radial shapes.
11 and 12, reference numeral 52 denotes a base member that supports the drive mechanism 34 (not shown in FIG. 10).
　位置ずれ防止ロッド１６の上面側には環状の下ガイド部材３９が配置され、その下ガイド部材３９は、位置ずれ防止ロッド１６の、コアの径方向の移動をガイドするガイド溝を複数放射状に有している。
　位置ずれ防止ロッド１６の下面側には環状の下カバー４２が配置され、その下カバー４２は、内径側の上面に、位置ずれ防止ロッド１６の、コアの径方向の移動をガイドするガイド溝を複数放射状に有している。 An annular lower guide member 39 is arranged on the upper surface side of the displacement prevention rod 16, and the lower guide member 39 has a plurality of radial guide grooves for guiding the displacement of the displacement displacement rod 16 in the radial direction of the core. is doing.
An annular lower cover 42 is disposed on the lower surface side of the displacement prevention rod 16, and the lower cover 42 has a guide groove for guiding the movement of the displacement prevention rod 16 in the radial direction of the core on the inner surface. It has a plurality of radial shapes.
　その下カバー４２の外径側の凹部に環状の下カム部材４６の一部が収容され、その下カム部材４６は、位置ずれ防止ロッド１６に固定されたカムフォロア４４が嵌合する円弧状のカム溝４６ａを複数放射状に有している。
　駆動機構３４はさらに、カム部材である上カム部材４０と下カム部材４６とを、凸部４０ｂ、４６ｂを介して連結する駆動軸４８を有している。この駆動軸４８には、上カム部材４０と下カム部材４６をコアの周方向に回転駆動するエアシリンダやサーボモータ等の駆動源４９が接続される。 A part of the annular lower cam member 46 is accommodated in a recess on the outer diameter side of the lower cover 42, and the lower cam member 46 is an arc-shaped cam into which a cam follower 44 fixed to the displacement prevention rod 16 is fitted. A plurality of grooves 46a are provided radially.
The drive mechanism 34 further includes a drive shaft 48 that connects the upper cam member 40 and the lower cam member 46, which are cam members, via the convex portions 40b and 46b. The drive shaft 48 is connected to a drive source 49 such as an air cylinder or a servo motor that rotationally drives the upper cam member 40 and the lower cam member 46 in the circumferential direction of the core.
　駆動軸４８が上記駆動源４９の駆動力によって、図１１に示す仮想領域５０の範囲で移動されることにより、上カム部材４０と下カム部材４６とがステータコア２の軸心を中心としてその周方向に回転する。それによって、上部ユニット１０及び下部ユニット１２の各位置ずれ防止ロッド１４、１６がコアの径方向に移動する。 The drive shaft 48 is moved within the virtual region 50 shown in FIG. 11 by the driving force of the drive source 49, so that the upper cam member 40 and the lower cam member 46 are rotated around the axis of the stator core 2. Rotate in the direction. As a result, the displacement prevention rods 14 and 16 of the upper unit 10 and the lower unit 12 move in the radial direction of the core.
　図１１は、位置ずれ防止ロッド１４、１６がコアの径方向外側に退避している状態を示している。即ち、図１０に示した駆動軸４８は退避位置Ｐ１に配置されている。
　この状態で全てのスロット４への絶縁シート８の挿入が完了すると、上述した駆動源４９が動作して、駆動軸４８が図１１に示した退避位置Ｐ１から図１２に示すように絶縁シート８の位置ずれを防止するサポート位置Ｐ２へ移動される。これに伴って、上カム部材４０と下カム部材４６とがコアの周方向で時計回り方向に回転し、位置ずれ防止ロッド１４、１６が径方向内側へ移動して絶縁シート８の端縁を覆う。図１０もこの状態を示している。
　この状態でコイルを各スロット４に挿入することにより、図８等を用いて説明した効果を得ることができる。駆動源４９の動作の制御は、プロセッサや制御回路を用いて自動で行っても、人がスイッチを操作して行ってもよい。 FIG. 11 shows a state in which the misalignment prevention rods 14 and 16 are retracted to the outside in the radial direction of the core. That is, the drive shaft 48 shown in FIG. 10 is disposed at the retracted position P1.
When the insertion of the insulating sheets 8 into all the slots 4 is completed in this state, the drive source 49 described above operates and the drive shaft 48 moves from the retracted position P1 shown in FIG. 11 to the insulating sheet 8 as shown in FIG. Is moved to the support position P <b> 2 that prevents the positional displacement of the first position. Along with this, the upper cam member 40 and the lower cam member 46 rotate clockwise in the circumferential direction of the core, and the misalignment prevention rods 14 and 16 move inward in the radial direction to move the edge of the insulating sheet 8. cover. FIG. 10 also shows this state.
By inserting the coil into each slot 4 in this state, the effect described with reference to FIG. 8 and the like can be obtained. Control of the operation of the drive source 49 may be performed automatically using a processor or a control circuit, or may be performed by a person operating a switch.
　上記実施形態では上下の位置ずれ防止ロッド１４、１６が、二股状の凸部を有する先端部を備える構成としたが、スロット４間に進入する凸部を、ロッド１本当たり１つのみ備える位置ずれ防止ロッドをコアの径方向に移動させる構成としてもよい。
　また、この発明はモータ等の回転電機のステータに限らず、そのロータ、あるいはトランス等の電磁機器のコアのスロットに絶縁シートを挿入した後、そのスロットにコイルを挿入する際にも、絶縁シートの位置ずれを防止するために適用することができる。 In the above embodiment, the upper and lower misregistration prevention rods 14 and 16 are provided with the tip portion having the bifurcated convex portion, but the position where only one convex portion entering between the slots 4 is provided per rod. It is good also as a structure which moves a slip prevention rod in the radial direction of a core.
Further, the present invention is not limited to a stator of a rotating electric machine such as a motor, but also when inserting an insulating sheet into a slot of a core of an electromagnetic device such as a rotor or a transformer and then inserting a coil into the slot. This can be applied to prevent misalignment.
　以上、本発明の好ましい実施形態について説明したが、本発明はかかる特定の実施形態に限定されるものではなく、種々の変形・変更が可能である。
　例えば、上述した実施形態で説明した各部のサイズは一例であり、上述した機能を実現可能な範囲で適宜に変更可能である。
　また、位置ずれ防止ロッド１４、１６を、コアの軸方向両側に配置することは必須ではない。すなわち、上部ユニット１０と下部ユニット１２の双方を設けることは必須ではない。絶縁シート８の挿入方向先端側にある下部ユニット１２だけでも、上述した実施形態の場合と同様な絶縁シート８の位置ずれ防止の効果は得られる。これは、下記のように位置ずれ防止ロッド１４、１６が、図５の位置ずれ防止位置にある状態で絶縁シート８を挿入する場合にも同様である。 As mentioned above, although preferable embodiment of this invention was described, this invention is not limited to this specific embodiment, A various deformation | transformation and change are possible.
For example, the size of each unit described in the above-described embodiment is an example, and can be appropriately changed as long as the above-described function can be realized.
Further, it is not essential to dispose the misalignment prevention rods 14 and 16 on both sides in the axial direction of the core. That is, it is not essential to provide both the upper unit 10 and the lower unit 12. Even with only the lower unit 12 at the distal end side in the insertion direction of the insulating sheet 8, the same effect of preventing the displacement of the insulating sheet 8 as in the above-described embodiment can be obtained. The same applies to the case where the insulating sheet 8 is inserted in a state where the displacement prevention rods 14 and 16 are at the displacement prevention position of FIG.
　また、上述の実施形態では、位置ずれ防止ロッド１４、１６が、図４の退避位置にある状態で絶縁シート８を挿入する例について説明した。しかし、位置ずれ防止ロッド１４、１６が、図５の位置ずれ防止位置にある状態で絶縁シート８を挿入することも考えられる。このようにすれば、絶縁シート８の挿入時、位置ずれ防止ロッド１４の凸縁１４Ａ１ａ、１４Ａ２ａが絶縁シート８をスロット４内に誘導することができる。凸縁１４Ａ１ａ、１４Ａ２ａの上面（絶縁シート８を受け入れる側の面）を、隣接する突縁との間に形成される間口が広くなるようなテーパ形状としているためである（図６Ａ参照）。また、位置ずれ防止ロッド１６の凸縁１６Ａ１ａ、１６Ａ２ａが、挿入されてきた絶縁シート８を一定の位置で保持することができる。
　そして、この方法であっても、絶縁シート８の上下端縁の少なくとも一部を位置ずれ防止ロッドの突縁で覆った状態でコイルセグメントをスロット４に挿入できることに変わりはないため、上述した実施形態の場合と同様な絶縁シート８の位置ずれ防止の効果が得られる。 Moreover, in the above-mentioned embodiment, the example which inserts the insulating sheet 8 in the state which the position shift prevention rods 14 and 16 exist in the retracted position of FIG. 4 was demonstrated. However, it is also conceivable to insert the insulating sheet 8 in a state where the misalignment prevention rods 14 and 16 are in the misalignment prevention position of FIG. In this way, when the insulating sheet 8 is inserted, the convex edges 14A1a and 14A2a of the misalignment preventing rod 14 can guide the insulating sheet 8 into the slot 4. This is because the upper surfaces of the convex edges 14A1a and 14A2a (the surface on the side where the insulating sheet 8 is received) are tapered so that the opening formed between the adjacent projecting edges is wide (see FIG. 6A). Further, the convex edges 16A1a and 16A2a of the misalignment prevention rod 16 can hold the inserted insulating sheet 8 at a fixed position.
Even in this method, the coil segment can be inserted into the slot 4 with at least a part of the upper and lower edges of the insulating sheet 8 covered with the protruding edges of the misalignment prevention rod. The effect of preventing the displacement of the insulating sheet 8 similar to the case of the embodiment can be obtained.
　なお、スロット４に挿入されるコイルセグメントは、複数のスロット間を跨ぐ配置となることが通常である。このため、少なくとも図５の上側では、複数のスロット間を跨ぐターン部が障害となり、位置ずれ防止ロッド１４が図５の位置ずれ防止位置にある状態では、位置ずれ防止ロッド１４をステータコアの軸方向に移動させて取り外すことができない。このため、コイルセグメントの挿入後に位置ずれ防止ロッド１４を含む上部ユニット１０を取り外す際には、一旦、位置ずれ防止ロッド１４を図４の退避位置に移動させてから、上部ユニット１０を取り外すとよい。 Note that the coil segment inserted into the slot 4 is usually arranged across a plurality of slots. Therefore, at least on the upper side of FIG. 5, the turn portion straddling the plurality of slots becomes an obstacle, and when the misalignment prevention rod 14 is in the misalignment prevention position of FIG. 5, the misalignment prevention rod 14 is arranged in the axial direction of the stator core. Can not be removed by moving to. For this reason, when the upper unit 10 including the misalignment prevention rod 14 is removed after the coil segment is inserted, the upper unit 10 may be removed after the misalignment prevention rod 14 is once moved to the retracted position in FIG. .
　上述した本発明の構成は、一部のみ取り出して実施することもできるし、以上の説明の中で述べた変形は、相互に矛盾しない限り任意に組み合わせて適用可能である。本発明の実施形態に記載された効果は、本発明から生じる最も好適な効果を例示したに過ぎず、本発明による効果は、本発明の実施形態に記載されたものに限定されるものではない。 The above-described configuration of the present invention can be implemented by extracting only a part, and the modifications described in the above description can be applied in any combination as long as they do not contradict each other. The effects described in the embodiments of the present invention are merely examples of the most preferable effects resulting from the present invention, and the effects of the present invention are not limited to those described in the embodiments of the present invention. .
２…ステータコア、４…スロット、８…絶縁シート、１０…上部ユニット、１２…下部ユニット、１４，１６…位置ずれ防止ロッド、１４Ａ，１６Ａ…先端部、１４Ａ１，１４Ａ２，１６Ａ１，１６Ａ２…凸部、１４Ａ１ａ，１４Ａ２ａ，１６Ａ１ａ，１６Ａ２ａ…突縁、１４Ｂ，１６Ｂ…接続部、３０…絶縁シートの位置ずれ防止装置、３４…駆動機構、３７…上ガイド部材、３９…下ガイド部材、４０…上カム部材、４０ａ，４６ａ…カム溝、４６…下カム部材 2 ... Stator core, 4 ... Slot, 8 ... Insulating sheet, 10 ... Upper unit, 12 ... Lower unit, 14, 16 ... Misalignment prevention rod, 14A, 16A ... Tip, 14A1, 14A2, 16A1, 16A2 ... Projection, 14A1a, 14A2a, 16A1a, 16A2a ... Projection edge, 14B, 16B ... Connection part, 30 ... Insulation sheet misalignment prevention device, 34 ... Drive mechanism, 37 ... Upper guide member, 39 ... Lower guide member, 40 ... Upper cam member 40a, 46a ... cam groove, 46 ... lower cam member

Claims (15)

  1. 　コアの周方向に等間隔に配置された複数のスロットに前記コアの軸方向に沿って個別に絶縁シートが挿入された状態で前記スロットにコイルを挿入する際に、前記絶縁シートの位置ずれを防止する絶縁シートの位置ずれ防止方法であって、
    　前記絶縁シートが、前記スロットの内周面に沿う外形に形成された絶縁シートであり、
    　複数の棒状部材を備える棒状部材ユニットであって、前記各棒状部材が、前記各スロットの間に対応する位置に前記周方向に配列されて放射状に配置され、前記コアの径方向に移動可能であり、前記周方向の両側に突縁を有する棒状部材ユニットを、前記コアの、前記絶縁シートの挿入方向先端側に配置し、
    　前記棒状部材ユニットの前記複数の棒状部材を前記径方向に移動させて前記各スロットの間にそれぞれ進入させ、
    　前記コアの軸方向の端面から突出した前記絶縁シートの端縁の少なくとも一部を、前記複数の棒状部材の前記突縁でそれぞれ覆った状態で、前記スロットに前記コイルを挿入することを特徴とする絶縁シートの位置ずれ防止方法。     When inserting a coil into the slot in a state where the insulating sheet is individually inserted along the axial direction of the core into a plurality of slots arranged at equal intervals in the circumferential direction of the core, the positional deviation of the insulating sheet is reduced. A method for preventing displacement of the insulating sheet,
    The insulating sheet is an insulating sheet formed in an outer shape along the inner peripheral surface of the slot;
    A rod-like member unit comprising a plurality of rod-like members, wherein each of the rod-like members is arranged radially in the circumferential direction at a corresponding position between the slots, and is movable in the radial direction of the core. A rod-like member unit having protruding edges on both sides in the circumferential direction is disposed on the leading end side of the core in the insertion direction of the insulating sheet;
    Moving the plurality of rod-shaped members of the rod-shaped member unit in the radial direction to enter between the slots,
    The coil is inserted into the slot in a state in which at least a part of the edge of the insulating sheet protruding from the axial end surface of the core is covered with the protruding edges of the plurality of rod-shaped members, respectively. To prevent the displacement of the insulating sheet.
  2. 　請求項１に記載の絶縁シートの位置ずれ防止方法であって、
    　前記棒状部材ユニットを、前記コアの軸方向の両側にそれぞれ配置し、
    　前記コアの軸方向の両側に配置された各前記棒状部材ユニットの、前記複数の棒状部材を前記径方向に移動させて前記各スロットの間にそれぞれ進入させ、前記コアの軸方向の端面から突出した前記絶縁シートの端縁の少なくとも一部を、前記複数の棒状部材の前記突縁でそれぞれ覆った状態で、前記スロットに前記コイルを挿入することを特徴とする絶縁シートの位置ずれ防止方法。
    うことを特徴とする絶縁シートの位置ずれ防止方法。     A method for preventing displacement of an insulating sheet according to claim 1,
    The rod-shaped member units are arranged on both sides of the core in the axial direction,
    The rod-like member units arranged on both sides of the core in the axial direction move the plurality of rod-like members in the radial direction so as to enter between the slots, respectively, and protrude from the axial end surfaces of the core. A method of preventing displacement of an insulating sheet, wherein the coil is inserted into the slot in a state where at least a part of the edge of the insulating sheet is covered with the protruding edges of the plurality of rod-shaped members.
    A method for preventing the displacement of an insulating sheet.
  3. 　請求項１又は２に記載の絶縁シートの位置ずれ防止方法であって、
    　少なくとも１つの前記棒状部材ユニットの前記複数の棒状部材を前記径方向に移動させて前記各スロットの間にそれぞれ進入させた状態で、前記スロットに前記絶縁シートを挿入することを特徴とする絶縁シートの位置ずれ防止方法。     A method for preventing displacement of an insulating sheet according to claim 1 or 2,
    An insulating sheet, wherein the insulating sheet is inserted into the slot in a state where the plurality of rod-shaped members of at least one of the rod-shaped member units are moved in the radial direction and are respectively inserted between the slots. How to prevent misalignment.
  4. 　コアの周方向に等間隔に配置された複数のスロットに前記コアの軸方向に沿って個別に絶縁シートを挿入した後、前記スロットにコイルを挿入する際に、前記絶縁シートの位置ずれを防止する絶縁シートの位置ずれ防止方法であって、
    　前記絶縁シートが、前記スロットの内周面に沿う外形に形成された絶縁シートであり、
    　複数の棒状部材を備える棒状部材ユニットであって、前記各棒状部材が、前記各スロットの間に対応する位置に前記周方向に配列されて放射状に配置され、前記コアの径方向に移動可能であり、前記周方向の両側に突縁を有する棒状部材ユニットを、前記コアの、前記絶縁シートの挿入方向先端側に配置し、
    　前記コイルの挿入前に、前記棒状部材ユニットの前記複数の棒状部材を前記径方向に移動させて前記各スロットの間にそれぞれ進入させ、前記コアの軸方向の端面から突出した前記絶縁シートの端縁の少なくとも一部を、前記複数の棒状部材の前記突縁でそれぞれ覆うことを特徴とする絶縁シートの位置ずれ防止方法。     After inserting an insulation sheet individually along the axial direction of the core into a plurality of slots arranged at equal intervals in the circumferential direction of the core, when the coil is inserted into the slot, the displacement of the insulation sheet is prevented. A method for preventing displacement of the insulating sheet,
    The insulating sheet is an insulating sheet formed in an outer shape along the inner peripheral surface of the slot;
    A rod-like member unit comprising a plurality of rod-like members, wherein each of the rod-like members is arranged radially in the circumferential direction at a corresponding position between the slots, and is movable in the radial direction of the core. A rod-like member unit having protruding edges on both sides in the circumferential direction is disposed on the leading end side of the core in the insertion direction of the insulating sheet;
    Before inserting the coil, the plurality of rod-shaped members of the rod-shaped member unit are moved in the radial direction to enter between the slots, and the end of the insulating sheet protrudes from the end surface in the axial direction of the core. A method for preventing displacement of an insulating sheet, wherein at least a part of the edge is covered with the protruding edges of the plurality of rod-shaped members.
  5. 　請求項４に記載の絶縁シートの位置ずれ防止方法であって、
    　前記棒状部材ユニットを、前記コアの軸方向の両側にそれぞれ配置し、
    　前記コイルの挿入前に、前記コアの軸方向の両側に配置された各前記棒状部材ユニットの、前記複数の棒状部材を前記径方向に移動させて前記各スロットの間にそれぞれ進入させ、前記コアの軸方向の端面から突出した前記絶縁シートの端縁の少なくとも一部を、前記複数の棒状部材の前記突縁でそれぞれ覆うことを特徴とする絶縁シートの位置ずれ防止方法。     A method for preventing displacement of an insulating sheet according to claim 4,
    The rod-shaped member units are arranged on both sides of the core in the axial direction,
    Before inserting the coil, the plurality of rod-shaped members of the rod-shaped member units arranged on both sides in the axial direction of the core are moved in the radial direction to enter between the slots, respectively. A method for preventing displacement of an insulating sheet, wherein at least a part of an edge of the insulating sheet protruding from an end face in the axial direction of the insulating sheet is covered with the protruding edges of the plurality of rod-shaped members.
  6. 　請求項４又は５に記載の絶縁シートの位置ずれ防止方法であって、
    　前記絶縁シートの、前記コアの軸方向に垂直な断面の形状及びサイズが、前記コアの軸方向の全長に亘って均一であることを特徴とする絶縁シートの位置ずれ防止方法。     A method for preventing displacement of an insulating sheet according to claim 4 or 5,
    A method for preventing misalignment of an insulating sheet, characterized in that the shape and size of a cross section of the insulating sheet perpendicular to the axial direction of the core are uniform over the entire axial length of the core.
  7. 　請求項１乃至６のいずれか一項に記載の絶縁シートの位置ずれ防止方法において、
    　前記絶縁シートが、前記スロットを前記径方向で複数に区画するように一枚のシートを折り曲げて形成されていることを特徴とする絶縁シートの位置ずれ防止方法。     In the position shift prevention method of the insulating sheet according to any one of claims 1 to 6,
    A method for preventing displacement of an insulating sheet, wherein the insulating sheet is formed by bending a single sheet so as to divide the slot into a plurality of slots in the radial direction.
  8. 　請求項７に記載の絶縁シートの位置ずれ防止方法において、
    　前記絶縁シートの、前記スロットの内周に沿う方向の両端のうち少なくとも一方が前記スロットの前記径方向の中央部で折り曲げられ、該折り曲げられた端部により前記スロットが２つに区画されていることを特徴とする絶縁シートの位置ずれ防止方法。     The method for preventing displacement of an insulating sheet according to claim 7,
    At least one of both ends of the insulating sheet in the direction along the inner periphery of the slot is bent at the radial center of the slot, and the slot is divided into two by the bent end. A method for preventing displacement of an insulating sheet.
  9. 　請求項８に記載の絶縁シートの位置ずれ防止方法において、
    　前記絶縁シートの中央部が前記スロットの前記径方向の中央部において前記コアの軸方向に沿う線で折り曲げられて、該折り曲げられた絶縁シートにより前記スロットが２つに区画されていることを特徴とする絶縁シートの位置ずれ防止方法。     The method for preventing displacement of an insulating sheet according to claim 8,
    The center portion of the insulating sheet is bent at a line along the axial direction of the core at the radial center portion of the slot, and the slot is divided into two by the bent insulating sheet. A method for preventing displacement of the insulating sheet.
  10. 　コアの周方向に等間隔に配置された複数のスロットに個別に挿入された絶縁シートの前記コアの軸方向における位置ずれを防止する絶縁シートの位置ずれ防止装置であって、
    　複数の棒状部材を備え、前記コアの、前記絶縁シートの挿入方向先端側に配置されている棒状部材ユニットであって、前記各棒状部材が、前記各スロットの間に対応する位置に前記周方向に配列されて放射状に配置され、前記コアの径方向に移動可能である棒状部材ユニットと、
    　前記棒状部材ユニットの前記複数の棒状部材を同時に前記径方向に移動させる駆動機構とを備え、
    　前記各棒状部材は、前記径方向内側への移動により前記各スロットの間に進入した状態では前記コアの軸方向の端面から突出した前記絶縁シートの端縁の少なくとも一部を覆うことができる突縁を、前記周方向の両側に有していることを特徴とする絶縁シートの位置ずれ防止装置。     An insulating sheet misalignment preventing device for preventing misalignment in the axial direction of the core of the insulating sheet individually inserted into a plurality of slots arranged at equal intervals in the circumferential direction of the core,
    A rod-shaped member unit that includes a plurality of rod-shaped members and is disposed on the distal end side of the core in the insertion direction of the insulating sheet, wherein each of the rod-shaped members is positioned at a position corresponding to the space between the slots. A rod-shaped member unit that is arranged radially and is movable in the radial direction of the core;
    A drive mechanism that simultaneously moves the plurality of rod-shaped members of the rod-shaped member unit in the radial direction;
    Each of the rod-shaped members can cover at least a part of the edge of the insulating sheet protruding from the end surface in the axial direction of the core in a state where the rod-shaped member enters between the slots by moving inward in the radial direction. An insulating sheet misalignment prevention device having edges on both sides in the circumferential direction.
  11. 　請求項１０に記載の絶縁シートの位置ずれ防止装置であって、
    　前記棒状部材ユニットを、前記コアの軸方向の両側にそれぞれ備え、
    　前記駆動機構は、前記コアの軸方向の両側に配置された各前記棒状部材ユニットの前記複数の棒状部材を同時に前記径方向に移動させることを特徴とする絶縁シートの位置ずれ防止装置。     It is the position shift prevention apparatus of the insulation sheet of Claim 10, Comprising:
    The rod-shaped member units are provided on both sides of the core in the axial direction,
    The drive mechanism moves the plurality of bar-shaped members of the bar-shaped member units arranged on both sides in the axial direction of the core simultaneously in the radial direction.
  12. 　請求項１０又は１１に記載の絶縁シートの位置ずれ防止装置において、
    　前記各棒状部材が、前記突縁を有する部分を支持し前記駆動機構に接続される接続部を有していることを特徴とする絶縁シートの位置ずれ防止装置。     In the position prevention apparatus of the insulation sheet of Claim 10 or 11,
    Each said rod-shaped member has the connection part which supports the part which has the said protrusion, and is connected to the said drive mechanism, The position shift prevention apparatus of the insulating sheet characterized by the above-mentioned.
  13. 　請求項１２に記載の絶縁シートの位置ずれ防止装置において、
    　２つの前記棒状部材が、１つの前記接続部から１つのスロットを囲むように二股状に延びるように形成され、前記二股の内周側では前記突縁が該内周全体に亘って形成されていることを特徴とする絶縁シートの位置ずれ防止装置。     In the position prevention apparatus of the insulation sheet according to claim 12,
    The two rod-shaped members are formed so as to extend in a bifurcated manner so as to surround one slot from the one connection portion, and the protruding edge is formed over the entire inner circumference of the bifurcated portion. A device for preventing misalignment of an insulating sheet.
  14. 　請求項１０から１３のいずれか一項に記載の絶縁シートの位置ずれ防止装置において、
    　前記駆動機構は、前記各棒状部材の前記径方向の移動をガイドするガイド部材と、前記各棒状部材に連結された複数の円弧状のカム溝を有し前記コアの軸心を中心として回転することにより前記各棒状部材を前記径方向に移動させるカム部材とを有していることを特徴とする絶縁シートの位置ずれ防止装置。     In the position shift prevention device of the insulating sheet according to any one of claims 10 to 13,
    The drive mechanism includes a guide member that guides the radial movement of each rod-shaped member, and a plurality of arc-shaped cam grooves that are coupled to each rod-shaped member, and rotates about the core of the core. And a cam member that moves each of the rod-shaped members in the radial direction.
  15. 　請求項１４に記載の絶縁シートの位置ずれ防止装置において、前記駆動機構の前記カム部材を前記周方向に回転駆動する駆動源を有することを特徴とする絶縁シートの位置ずれ防止装置。 15. The insulation sheet misalignment prevention apparatus according to claim 14, further comprising a drive source that rotationally drives the cam member of the drive mechanism in the circumferential direction.
PCT/JP2019/014529 2018-03-30 2019-04-01 Method for preventing location aberration of insulation sheet and device for preventing location aberration of insulation sheet WO2019189934A1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4024684A1 (en) * 2020-04-10 2022-07-06 Jee Technology Co., Ltd. Positioning and guiding device for inserting flat wire hairpins into stator

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005057950A (en) * 2003-08-07 2005-03-03 Toyota Motor Corp Cuff support switching device
JP2009165312A (en) * 2008-01-09 2009-07-23 Toyota Motor Corp Cuff supporter and method of manufacturing stator using the same
JP2013208033A (en) * 2012-03-29 2013-10-07 Minebea Co Ltd Armature of rotary electric machine, and rotary electric machine including the same
JP2017073924A (en) * 2015-10-09 2017-04-13 トヨタ自動車株式会社 Stator for dynamo electric motor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005057950A (en) * 2003-08-07 2005-03-03 Toyota Motor Corp Cuff support switching device
JP2009165312A (en) * 2008-01-09 2009-07-23 Toyota Motor Corp Cuff supporter and method of manufacturing stator using the same
JP2013208033A (en) * 2012-03-29 2013-10-07 Minebea Co Ltd Armature of rotary electric machine, and rotary electric machine including the same
JP2017073924A (en) * 2015-10-09 2017-04-13 トヨタ自動車株式会社 Stator for dynamo electric motor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4024684A1 (en) * 2020-04-10 2022-07-06 Jee Technology Co., Ltd. Positioning and guiding device for inserting flat wire hairpins into stator
EP4024684A4 (en) * 2020-04-10 2023-09-27 Jee Technology Co., Ltd. Positioning and guiding device for inserting flat wire hairpins into stator

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