CN101888126B - Stator coil and method of manufacturing the same - Google Patents
Stator coil and method of manufacturing the same Download PDFInfo
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- CN101888126B CN101888126B CN 201010141809 CN201010141809A CN101888126B CN 101888126 B CN101888126 B CN 101888126B CN 201010141809 CN201010141809 CN 201010141809 CN 201010141809 A CN201010141809 A CN 201010141809A CN 101888126 B CN101888126 B CN 101888126B
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Abstract
The invention provides a stator coil (20), which can realize the high occupying rate of the coil terminal part at nearby of the core end-face and reduce the damage produced during assembling. The stator coil is formed continuously by a plurality of unit wave winding coils (21) in the radial direction, the unit wave winding coil makes the coil edge parts (21a) inserted in the slot (14) of the stator core (11) and the coil terminal parts (21b, 21c) protruding from the axial end-face of the stator core (11) to alternatively form at the circumference direction in a crawl bending mode to form a ring winding coil. The diameter of the circle pictured by a coil terminal part (21b) at one side end of the coil edge part is different from the diameter of the circle pictured by the coil terminal part (21c) of the other side end. The manufacturing method is to alternately enwind the wire (17) alternately on the first and second clamping parts, so as to make the wire to be crawl bending and winding.
Description
Technical field
The present invention relates to the employed stator coil of electric rotating machine.More specifically, the present invention relates to replace wave winding stator coil and the manufacture method thereof that forms with the coil side section in the groove of insertion stator core with from the outstanding coil end section of this groove.
Background technology
In the past, the stator of electric rotating machine had stator core cylindraceous and stator coil, stator core wherein, have be arranged in radial, to the outstanding a plurality of teeth (magnetic pole) of internal diameter direction and a plurality of grooves of opening betwixt; Stator coil is assembled on this core by coil side section is accommodated in this groove.About the assembling of this stator coil, known have a so-called method that embeds, and namely in advance stator coil and stator core made respectively, then this coil is housed in each groove of core.And, embed the winding mode of the employed coil of method about this, known have make wire rod pass the wave winding mode (for example, with reference to patent documentation 1) of reeling at the alternatively up and down of each tooth.
In the wave winding mode of this citing document 1, the wave winding coil manufacturing installation that use will be arranged to carry out respectively radial movement with inner clamp and the outer clamp of tooth equal number.In this manufacturing installation, at first inner clamp is configured to ring-type, in its outside outer clamp is configured to ring-type.Then the wire rod number of turn in accordance with regulations is wound on the conglobate coil of shape on a plurality of inner clamp that are configured to ring-type.Afterwards, as shown in figure 12, by making respectively inner clamp 2 and outer clamp 3 be mobile radially, and make the medial movement of the circle that outer clamp 3 draws in a plurality of inner clamp 2, the conglobate coil forming of will reeling around a plurality of inner clamp 2 thus be star.The star wave winding coil 4 that so forms utilizes afterwards in the not shown groove that embeds between the tooth that device is pressed into core, thereby forms stator.
On the other hand, for rotor being inserted in this stator, need to prevent from not being accommodated in the groove and from stator core shaft to the coil end section of the outstanding coil of end face enter into the inboard of stator core inner peripheral surface.In addition, if this electric rotating machine is 3 phase formulas, then in single stator core, be assembled with the stator coil of 3 phases.Therefore, in 3 phase formula electric rotating machines, the result that the coil end section of 3 outstanding phases overlaps each other can appear from the groove of each phase coil.Under the circumstances, be the extrusion molding that carries out coil end section outstanding from the groove of the stator coil of initial assembling is discharged to the outside diameter of stator core all the time, and then other stator coil is inserted in the groove.And, behind the stator coil of 3 phases of single stator core assembling, make again the coil end section integral body of each phase coil be discharged to the machine-shaping of outside diameter, thereby prevent that the coil end section of all coils of 3 phases from entering into the inboard of stator core inner peripheral surface.
At this, star wave winding coil 4 shown in Figure 12 can be categorized into: be inserted into the straight 4c of coil side section in the stator core groove, the end of the 4c of this coil side section is connected to each other, from stator core shaft to the outstanding circular-arc coil end 4a of section, the 4b of end face.Thereby in the wave winding coil 4 of this star, the length of the 4c of coil side section is all identical, and the 4a of coil end section, 4b also all are identical shape.Therefore, upwards overlapping in the footpath of core for fear of the 4a of coil end section, 4b, in its extrusion molding, shown in the chain-dotted line of Figure 11, be to make each 4a of coil end section, 4b different in turn from the outstanding amount of the end face of core 6 all the time.So the 4a of coil end section, 4b can be upwards not overlapping in the footpath of core, shown in the solid line of Figure 11, the 4a of this coil end section, 4b overlap each other in the axial of core 6 in extrusion molding, therefore can make the 4a of this coil end section, 4b both sides all be discharged to the outside diameter of stator core 6.
Patent documentation 1: Japanese Unexamined Patent Application Publication 2001-513320 communique
But, because the length of the 4c of coil side section that makes progress adjacent in the footpath of core 6 equates respectively, therefore when the outside diameter from the outstanding 4b of coil end section of one side end face 6b of core 6 (Figure 11 below) from core 6 is reduced its overhang to internal side diameter, the 4a of coil end section that gives prominence to from the another side end face 6a of core 6 (Figure 11 above) will increase its overhang to internal side diameter from the outside diameter of core 6.Therefore, even will be discharged to outside diameter from the outstanding 4b of coil end section of one side end face 6b (Figure 11 below), be partial to from the beginning the internal side diameter of stator core 6 from outstanding coil end section its integral body of 4a of the another side end face 6a of core 6 (Figure 11 above), in extrusion molding, the coil end section of internal side diameter also can not enter into the core side of the coil end section of outside diameter.Therefore, be present in the inboard 4a of coil end section must draw larger circular arc could with the 4a of coil end section of outside diameter core 6 axially on overlapping, thereby be difficult to make this 4a of coil end section integral body to be discharged to fully the outside diameter of stator core 6.And, also have following problem: when this draws part than orthodrome and remains in side end face, in-core footpath, can with the coil end section interference of other stator coils of assembling later.
For fear of drawing the 4a of coil end section interference than orthodrome with this, need to make the coil end section of other stator coil morely outstanding from the end 6a of core 6, and make it surpass this to draw the 4a of coil end section than orthodrome, and when the end 6a that makes like this 4a of coil end section from core gives prominence to morely, make other coil 4 become the problem that gets greatly the total length increase for the manufacture of the wire rod of this coil 4 thereby then exist.Then, when coil 4 becomes large like this, exist to make that so-called copper loss increases in the coil 4, use the decrease in efficiency of the electric rotating machine of this coil 4, and the problem that also maximizes of the profile of this electric rotating machine.
In addition, in method in the past, embed in the groove of between cog that device is pressed into the wave winding coil that is configured as star 4 shown in Figure 12 in core with not shown, a plurality of coil side 4c of section that therefore are positioned at the plane erect at that time and become state parallel to each other.That is, not shown embed the direction that device will be positioned at a plurality of coil side 4c of section on plane and convert approximate right angle to and it is erected, angle that therefore should conversion is larger, also might be to consisting of the wire rod injury of this coil 4 when it erects.The thicker this damage of wire rod that consists of wave winding coil 4 more might increase.
Summary of the invention
The object of the invention is to, a kind of stator coil and manufacture method thereof that can reduce its overhang when avoiding the interference of coil end section, improve near the fill-in ratio of the coil end section core end face is provided.
Other purpose of the present invention is, a kind of stator coil and manufacture method thereof that reduces the damage that produces when assembling is provided.
Stator coil of the present invention is formed diametrically continuously by a plurality of units wave winding coil, this unit wave winding coil be with insert in the groove of stator core coil side section and from stator core shaft to the outstanding coil end section of end face, with the crooked mode of crawling alternately form in a circumferential direction and be a ring around coil.
Its formation is characterised in that, stator core is made of magnetic material, the a plurality of teeth that have circular annulus and give prominence to towards the center of this annulus from the inner peripheral surface of this annulus, the coil side section of the other unit wave winding coil adjacent with the annulus side of a unit wave winding coil, the coil side section of being longer than a unit wave winding coil.
Be preferably, the diameter of a circle that the coil end section of the end, one side of this wave winding coil coil limit section of unit draws, different from the diameter of a circle that the coil end section of the another side end of coil side section draws.
The manufacture method of stator coil of the present invention, with a plurality of the first latch for printed circuit across the arranged spaced of stipulating circlewise, the first latch for printed circuit is set to the second latch for printed circuit: its with the quantity of the tooth of stator core divided by the quantity of the stator coil that is assembled in single stator core (11) (20) after the numerical value of gained identical, stator core is by having circular annulus and consisting of from the inner peripheral surface of this annulus magnetic material towards the outstanding a plurality of teeth in the center of this annulus, to between the first latch for printed circuit, be configured to ring-type by opposed a plurality of the second latch for printed circuit in interval across regulation, wound wire alternately on the first latch for printed circuit and the second latch for printed circuit, make its crawl bending and pitch of the laps, make either party in the first and second latch for printed circuit or both sides' winding face tilt, so that the interval of the winding face of the winding face of the first latch for printed circuit and the second latch for printed circuit is expanded towards radial outside; Make annulus side with a unit wave winding coil adjacent and be a ring around the coil side section of other unit wave winding coil, be longer than be a ring around the coil side section of a unit wave winding coil, this unit wave winding coil, to make at the first latch for printed circuit and the second latch for printed circuit to replace winding and crawl crooked wire rod more than 2 weeks, obtain coil side section and coil end section are replaced the stator coil that forms, wherein coil side section is made of the wire rod that is wrapped between the first latch for printed circuit and the second latch for printed circuit, and the wire rod along circumferencial direction consists of on the first and second latch for printed circuit by being wrapped in coil end section.
In addition, the circle that a plurality of the second latch for printed circuit of being configured to ring-type are drawn is different from the circle that a plurality of the first latch for printed circuit that are configured to ring-type draw, and the diameter of a circle that the coil end section of the end, one side of wave winding coil coil limit section of the unit of making draws is different from the diameter of a circle that the coil end section of the another side end of coil side section draws.
In stator coil of the present invention, make the coil side minister of the other unit wave winding coil adjacent with the outer circumferential side of a unit wave winding coil in the coil side section of a unit wave winding coil, therefore be assembled under the state of stator core, the outside diameter from the outstanding coil end section of the both ends of the surface of core from core reduces respectively and tilts to its overhang of internal side diameter.So this its integral body of coil end section is partial to the outside diameter of stator core from the beginning, when this coil end section is pressed to the radial outside of core, the coil end section of internal side diameter enters into the core side of the coil end section of outside diameter, can make thus this coil end section integral body be discharged to comparalive ease the outside diameter of stator core.Therefore, with after the coil end section of other coils of assembling guide in the space that the coil end section because of coil from initial assembling to radial outside that press vacates and be arranged in this space, thereby can improve near the fill-in ratio in the coil end section space end face of core.
In addition, behind the assembling coil, then coil side section can erect and become parallel to each other, as long as but the circle that the coil end section that makes the end of coil side section draws is different and make this coil side section along taper seat, the previous methods that then converts approximate right angle to the coil side section that will be positioned at the plane and erect is compared, the angle of coil side section conversion will become less, thereby can reduce the damage that coil side section is caused.Even for example also can reduce damage during heavy wire, therefore can significantly improve the reliability of the electric rotating machine that uses this coil.And, by manufacture method of the present invention, can make with comparalive ease such stator coil.
Description of drawings
Fig. 1 is the A-A line cutaway view that stator coil of the present invention is assembled into the Fig. 3 on the core.
Fig. 2 is the stereogram of this coil.
Fig. 3 installs to stereogram on the core with this coil groups.
Fig. 4 is that the coil groups with 3 phases installs to the stereogram corresponding with Fig. 3 on the core.
Fig. 5 is the B-B line cutaway view of Fig. 4.
Fig. 6 installs to the section constitution figure that embeds device on the core with this coil groups.
Fig. 7 is the end view that has be used to the coil winding machine of the winding clamp that obtains this coil.
Fig. 8 is the vertical view of this winding clamp.
Fig. 9 is the figure that expression is wrapped in wire rod the state on its first latch for printed circuit.
Figure 10 is the figure that expression is wrapped in wire rod the state on its second latch for printed circuit.
Figure 11 represents the in the past cutaway view corresponding with Fig. 1 of coil.
Figure 12 is this in the past stereogram of coil.
The number in the figure explanation:
10: the stator that electric rotating machine is used; 11: stator core; 14: groove; 17: wire rod; 20: stator coil; 21: the unit wave winding coil; 21a: coil side section; 21b, 21c: coil end section; 41: the first latch for printed circuit; 42: the second latch for printed circuit; C: the circle that the coil end section of the end, one side of coil side section draws; D: the circle that the coil end section of the another side end of coil side section draws.
Embodiment
Below, describe with reference to the accompanying drawings the mode of the present invention of implementing in detail.
Fig. 4 represents stator coil 20 of the present invention is assembled into stator core 11 and the stereogram of the stator 10 that obtains.Stator core 11 is formed with the groove 14 of the aftermentioned coil side 21a of section of a plurality of housing stator coils 20 by having circular annulus 12 and consisting of from the inner peripheral surface of this annulus 12 magnetic material towards the outstanding a plurality of teeth 13 in the center of this annulus 12 between a plurality of teeth 13.The central layer that the stator core 11 of present embodiment represents by the shape that will have certain thickness annulus 12 and tooth 13, the thickness that is laminated into regulation is also fixed and the laminated-type stator core of formation.
In addition, the stator coil 20 of present embodiment forms: the diameter of the diameter of the round C that the 21b of coil end section of the end, one side of the unit wave winding coil 21 coil limit 21a of section draws, the round D that draws from the 21c of coil end section of the another side end of the 21a of this coil side section is different.This means have the 21a of coil side section and with unit wave winding coil 21 its whole wire rods 17 of the continuous 21b of coil end section, the 21c in its two ends along single taper seat.Particularly, when the unit wave winding coil 21 that is positioned at most peripheral is described, be made to for: when the 21c of coil end section of hypothesis Fig. 2 downside is positioned at the circular cone that represents with chain-dotted line of bottom surface periphery, the 21a of coil side section is along the straight line of the point of the summit T that connects this circular cone and bottom surface periphery, the 21c of coil end section of the another side end of the 21a of this coil side section, round D along this bottom surface periphery, the 21b of coil end section of the end, one side of the 21a of this coil side section intersects and the round C that draws along imaginary plane parallel with this bottom surface between this bottom surface and summit T and taper seat.
Then, the constitutive characteristic of stator coil 20 of the present invention is: the 21a of coil side section of the other unit wave winding coil 21 adjacent with the outer circumferential side of a unit wave winding coil 21 is longer than the 21a of coil side section of this unit wave winding coil 21.Namely, it is characterized in that: shown in Fig. 1 is detailed, after the 21a of this coil side section is inserted the groove 14 of stator core 11, the length of the 21a of coil side section of outside diameter and internal side diameter is different, so that the outside diameter from the overhang of the both ends of the surface of the core 11 outstanding 21b of coil end section, 21c from core 11 reduces respectively to internal side diameter.
In addition, stator coil 20 is that a plurality of units wave winding coil 21 forms diametrically continuously, therefore as shown in Figure 2, constitute: make the 21b of coil end section, the 21c of the other unit wave winding coil 21 adjacent with the outer circumferential side of a unit wave winding coil 21 form to such an extent that be longer than the 21b of coil end section, the 21c of a unit wave winding coil 21, and the length that makes the 21b of this coil end section, 21c be suitable for forming radial, insert the groove 14 of the coil side 21a of section and the distance between the groove 14, thereby the 21a of coil side section is easily inserted in the groove 14.
Below, the manufacture method of the present invention that obtains such stator coil is described.
Fig. 7 represents for the coil winding machine 30 that obtains this stator coil 20.In this coil winding machine 30, be provided with the winding clamp 40 that possesses a plurality of the first latch for printed circuit 41 and a plurality of the second latch for printed circuit 42.As shown in Figure 7 and Figure 8, a plurality of the first latch for printed circuit 41 across the regulation arranged spaced circlewise, a plurality of the second latch for printed circuit 42 also across the regulation arranged spaced circlewise.The first and second latch for printed circuit 41,42 are configured to: the plane and the plane that comprises a plurality of the second latch for printed circuit 42 that are configured to ring-type that comprise a plurality of the first latch for printed circuit 41 that are configured to ring-type, interval across regulation is parallel to each other, and opposite across the interval of regulation between a plurality of the second latch for printed circuit 42 and this first latch for printed circuit 41.This first and second latch for printed circuit 41,42 is set to: its with the quantity of the tooth 13 of stator core 11 divided by the quantity of the coil 20 that is assembled in single core 11 after the numerical value of gained identical, in the present embodiment, illustration use the stator core 11 that 36 teeth 13 are arranged, and in the situation that this core 11 is assembled 3 phase formula stator for electric rotating machine 10 (Fig. 4) of 3 coils 20, therefore represented to use the situation of 6 the first latch for printed circuit 41 and 6 the second latch for printed circuit 42.
As shown in Figure 8,6 the first latch for printed circuit 41 are every the angle of stipulating, namely use the angle that obtains behind its all-round (360 °) number divided by the first latch for printed circuit 41, in the present embodiment for every 60 ° with radial be installed in the first disk 43 around, 6 the second latch for printed circuit 42 every 60 ° with radial be installed in the first disk 44 around.The first and second latch for printed circuit 41,42 are respectively identical structure, form: this first and second latch for printed circuit 41,42 has: be installed on respectively the first and second disks 43,44 installation portion 41a, 42a; Be connected with this installation portion 41a, 42a, from the first and second disks 43,44 periphery outstanding wound portion 41b, 42b laterally; With mutually away from direction be formed at flange part 41c, 42c on the projecting edge of this wound portion 41b, 42b, each wound portion 41b, 42b form from the first and second disks 43,44 periphery in a circumferential direction expansion fan-shaped toward the outer side.In addition, as shown in Figure 7, being installed on the first and second latch for printed circuit 41,42 is tabular surface at disk 43,44 face, but the thickness of its wound portion 41b, 42b forms thicklyer from disk 43,44 periphery from installation portion 41a, 42a toward the outer side.Thus with the winding face of the installed surface opposition side of wound portion 41b, 42b, in the end view of Fig. 7 for being formed obliquely.
Coil winding machine 30 comprises main body 30a and the rotating shaft 31 that is built-in with not shown motor, and this rotating shaft 31 is installed in rotationally the motor on this main body 30a by tiltable and can rotates.Installed on every side the first and second latch for printed circuit 41, the first disk 43 of 42 and the second disk 44 with following state and with its coaxial shape in center be installed on this rotating shaft 31, described state refers to: makes and first and second latch for printed circuit 41,42 face has been installed mutually toward the outer side, and across the state at the interval of regulation.So under the state of predetermined distance, the first disk 43 and the second disk 44 are being installed in parallel to each other, thereby are being made between a plurality of the second latch for printed circuit 42 and the first latch for printed circuit 41 opposite across the interval of regulation.At this, the predetermined distance of the first disk 43 and the second disk 44 refers to, with the length of the 21a of coil side section of the stator coil 20 of wanting to obtain about equally, in the present embodiment, guarantee its interval by plug-in mounting pad 30b between the first disk 43 and the second disk 44.Then, the first and second latch for printed circuit 41,42 face have been installed mutually toward the outer side owing to make, therefore the interval of the winding face of the winding face of the first latch for printed circuit 41 and the second latch for printed circuit 42 can be mounted to towards radial outside and expands.
In addition, in the present embodiment, constitute: the external diameter of the second disk 44 is greater than the external diameter of the first disk 43, and it is different from the circle that a plurality of the first latch for printed circuit 41 that are configured to ring-type draw to be configured to the circle that a plurality of second latch for printed circuit 42 of ring-type draw.Although this first disk 43 and the second disk 44 are installed on the rotating shaft 31 of coil winding machine 30, but shown in Fig. 8 is detailed, from the end on observation of rotating shaft 31 time, be to make every 60 ° to be installed in first on the disk or the second latch for printed circuit 42 with respect in a circumferential direction mobile 30 ° the state installation of getting off of the second or first other latch for printed circuit 41.Make thus in the gap of the second latch for printed circuit 42 between the first latch for printed circuit 41 and the first latch for printed circuit 41 adjacent with this first latch for printed circuit 41, coil winding machine 30 constitutes and can make its rotating shaft 31 with the first and second disks 43,44 each rotatable 30 °.Wherein, label 43a represents that being installed in raising on the first disk 43 for the end of the spiral material 17 of raising rolls up parts 43a.
As shown in Figure 7, on coil winding machine 30, can be provided with nozzle shaft 32 with passing in and out, this nozzle shaft 32 is outstanding from the front face forward that is provided with rotating shaft 31, on this nozzle shaft 32, be provided with tubular nozzle 33 in the mode vertical with this nozzle shaft 32, insert in this nozzle 33 and be connected with wire rod 17, the front end of nozzle 33 can enter into the gap between the first latch for printed circuit 41 and the second latch for printed circuit 42.Rotating shaft 31 is fixed with being tilted, on one side when making nozzle shaft 32 turnover, the end of deriving wire rod 17 in the nozzle 33 is passed through near the periphery of the first and second latch for printed circuit 41,42 wound portion 41b, 42b.In addition, at this coil winding machine 30 a plurality of pulleys 35,36 are set, a plurality of pulleys 35,36 will be directed to nozzle 33 by the wire rod 17 that the not shown drum that is wound with wire rod 17 is supplied with.One of them is located on the nozzle shaft 32, and wherein another can unsteadily be installed on main body 30a via leaf spring 37.Leaf spring 37 constitutes by its elasticity and absorbs the lax of wire rod 17 and this wire rod 17 is granted tension force.
Use the stator coil manufacture method of this coil winding machine 30, shown in the chain-dotted line of Fig. 7, at first make nozzle shaft 32 outstanding, make nozzle 33 by the gap between the first latch for printed circuit 41 and the second latch for printed circuit 42, the wire rod 17 that is inserted through in this nozzle 33 is inserted through between the first latch for printed circuit 41 and the second latch for printed circuit 42, and is rolled onto from being raised in the end of this wire rod 17 the state on the volume parts 43a that raises.Next, coil winding machine 30 enters nozzle shaft 32, make its nozzle 33 by the gap between the first latch for printed circuit 41 and the second latch for printed circuit 42, coil winding machine 30 makes rotating shaft 31 rotations afterwards, and makes the first and second disks 43,44 both sides that are installed on this rotating shaft 31 rotate in a circumferential direction 30 ° with the first and second latch for printed circuit 41,42.So nozzle 33 is relative with it between the next one the first latch for printed circuit 41 adjacent between the first latch for printed circuit 41 that passes through with previous this nozzle 33 and the second latch for printed circuit 42 and the second latch for printed circuit 42, coil winding machine 30 makes nozzle shaft 32 outstanding, makes this nozzle 33 by the gap between this next one first latch for printed circuit 41 and the second latch for printed circuit 42.So insert the wire rod 17 lead in this nozzle 33, after being wound in the second latch for printed circuit 42, inserting and lead between its adjacent next one the first latch for printed circuit 41 and the second latch for printed circuit 42 and be wrapped on the second latch for printed circuit 42 and form U word shape.
Then, coil winding machine 30 makes rotating shaft 31 to the equidirectional rotation again, makes the first and second disks 43,44 both sides rotate in a circumferential direction 30 ° with the first and second latch for printed circuit 41,42.So this nozzle 33 formerly the first latch for printed circuit 41 of passing through of nozzle 33 and the second latch for printed circuit 42 between relative with it between the adjacent next one the first latch for printed circuit 41 and the second latch for printed circuit 42, coil winding machine 30 enters nozzle shaft 32 again, and makes this nozzle 33 by its gap.So be inserted through the wire rod 17 in this nozzle 33, after being wound in the first latch for printed circuit 41, be inserted through it again between the adjacent next one the first latch for printed circuit 41 and the second latch for printed circuit 42, and be wrapped in serpentine bend on this first latch for printed circuit 41 and form S word shape.
By repeatedly carrying out such action, wire rod 17 alternately is wrapped on the first latch for printed circuit 41 and the second latch for printed circuit 42 on one side, one side serpentine bend, by continuing this action, this wire rod 17 will be along the first and second disks 43,44 periphery is reeled, alternately form the 21a of coil side section (Fig. 2) that is consisted of by the straight wire rod 17 that is wrapped between the first latch for printed circuit 41 and the second latch for printed circuit 42, with by being wound in the first and second latch for printed circuit 41,42 21b of coil end section that consist of along the wire rod 17 of circumferencial direction, 21c (Fig. 2), at wire rod 17 at the first and second all latch for printed circuit 41, twined on 42 under the state of a circle, this wire rod 17 is serpentine bend on one side, on one side along the first and second disks 43,44 peripheral ring becomes unit wave winding coil 21 around a circle.
When making nozzle shaft 32 turnover, the end of deriving wire rod 17 in the nozzle 33 is passed through near the periphery of the first and second latch for printed circuit 41,42 wound portion 41b, 42b, therefore when after having formed unit wave winding coil 21, still repeating aforesaid operations, as shown in Figure 9 and Figure 10, new wire rod 17 and the wire rod 17 that twines first are adjacent and be wrapped on the first latch for printed circuit 41 and the second latch for printed circuit 42 from radial outside.That is, as shown in Figure 9, nozzle shaft 32 is outstanding when making, and makes rotating shaft 31 after 30 ° of circumferencial direction rotations, and wire rod 17 is wrapped on the wound portion 41b of the first latch for printed circuit 41 with the state that separates with the wire rod 17 of previous winding.But, as shown in figure 10, after this nozzle shaft 32 being entered make rotating shaft 31 rotate again 30 °, this wire rod 17 is wrapped on the wound portion 42b of the second latch for printed circuit 42, be wrapped in the wire rod 17 on the wound portion 41b of the first latch for printed circuit 41 this moment, is stretched in a circumferential direction, shown in the dash-dot arrows of Figure 10, to wire rod 17 side shiftings of previous winding, and become with this previous wire rod from the adjacent state of outer circumferential side.
Particularly in the present embodiment, in the first and second latch for printed circuit 41,42 each wound portion 41b, 42b form along disk 43,44 external diameter expand toward the outer side fan-shaped, the interval of the winding face of the winding face of the first latch for printed circuit 41 and the second latch for printed circuit 42 constitutes towards radial outside to be expanded, therefore when wound wire 17 on this first and second latch for printed circuit 41,42 wound portion 41b, 42b separately, this wire rod 17 is fan-shaped and is directed into the wound portion 41b of inclination, the winding face of 42b, to installation portion 41a, 42a side shifting.Its result, the wire rod 17 that is wrapped in after can making on the first latch for printed circuit 41 and the second latch for printed circuit 42 is adjacent effectively from radial outside with the previous wire rod 17 that twines.
Therefore, make alternately at the first latch for printed circuit 41 and the second latch for printed circuit 42 and twine and the crooked wire rod 17 that crawls is reeled more than 2 weeks along the first and second disks 43,44 periphery, thereby can form with the unit wave winding coil 21 that forms first from the adjacent new unit wave winding coil 21 of outer circumferential side, can obtain thus the stator coil 20 that a plurality of units wave winding coil 21 forms diametrically continuously.Then, make the first and second latch for printed circuit 41,42 both sides' winding face tilt, so that the interval of the winding face of the winding face of the first latch for printed circuit 41 and the second latch for printed circuit 42 expands towards radial outside, therefore can make outer circumferential side with this unit wave winding coil 21 adjacent and be a ring around the 21a of coil side section of other unit wave winding coil 21 be longer than along the first and second disks 43,44 periphery be a ring around the 21a of coil side section of a unit wave winding coil 21.
In addition, the first and second latch for printed circuit 41,42 wound portion 41b, 42b separately, form from the first and second disks 43,44 periphery in a circumferential direction expansion fan-shaped toward the outer side, therefore the 21b of coil end section, the 21c (Fig. 2) that are consisted of by the wire rod that is wrapped on this wound portion 41b, the 42b, its length is different on its winding position, and the length of radial outside is long.Therefore, can make the 21b of coil end section of the other unit wave winding coil 21 adjacent with the outer circumferential side of this unit wave winding coil 21, the 21b of coil end section, the 21c that 21c is longer than a unit wave winding coil 21.
In addition, in the present embodiment, the circle that a plurality of the second latch for printed circuit 42 of being configured to ring-type are drawn is different from the circle that a plurality of the first latch for printed circuit 41 that are configured to ring-type draw, therefore, the round C that the 21b of coil end section of the end, one side of the 21a of coil side section that as shown in Figure 2 can the unit's of making wave winding coil 21 draws is less than or greater than the round D that the 21c of coil end section of the another side end of the 21a of this coil side section draws.Then, the crooked wire rod 17 that will crawl is reeled the number of times of regulation along the first and second disks 43,44 periphery after, as shown in Figure 7, the first and second disks 43,44 rotating shafts 31 from coil winding machine 30 are taken off, the first and second latch for printed circuit 41,42 are broken away from, thereby obtain stator coil 20 of the present invention.
The stator coil 20 of so making uses the device 50 that embeds shown in Figure 6 to be assembled in stator core 11.The illustrated device 50 that embeds comprises: overlap receptor 53 that tooth 13 lower surfaces to core 11 support with blade insert 51 along the bar-shaped blade insert 51 of the inboard of tooth 13 (Fig. 3) configuration, at the piling tool 52 of the medial movement of core 11, from the outside, press from upside this core 11 annulus 12 by pressure ring 54.In addition, embed at this and to be provided with a plurality of jaws 56 of pressing in device 50, this is pressed jaw 56 and makes at the radial outside that is discharged to core 11 by the pressure ring 54 side-prominent 21b of coil end section.
The installation of stator coil 20 is positioned at the outside of receptor 53 by the 21c of coil end section that makes large footpath side, and carry out the inboard that makes the 21b of coil end section of path side be positioned at blade insert 51.Then make receptor 53 support core 11 and by pressing fixing by pressure ring 54.Under this state, as shown in Figure 6, piling tool 52 is inserted led in the inboard of core 11, the path lateral coil terminal part 21b that will be positioned at blade insert 51 inboards mentions to the top of figure.The 21a of coil side section that is connected with this path lateral coil terminal part 21b thus also is raised, and rises while be pressed in the groove 14, and under the state above this path lateral coil terminal part 21b arrives core 11, all 21a of coil side section are housed in this groove 14.In the present embodiment of illustration 3 phase formula electric rotating machines, as shown in Figure 3, the adjacent 21a of coil side section crosses over three teeth 13 and is inserted in each groove 14.
At this, when embedding device 50 installation stator coil 20, need to make the 21c of coil end section on one side be positioned at the outside of receptor 53, make the 21b of coil end section of another side be positioned at the inboard of blade insert 51, but in stator coil 20 of the present invention, the circle that the 21b of coil end section, the 21c of coil side section 21a end are drawn is different, and therefore the unit's of making wave winding coil 21 can make its installation become easy along taper seat.In addition, be housed under the state of groove 14 at the 21a of coil side section, although can erect and be parallel to each other along the 21a of coil side section of taper seat, compare but convert the in the past coil shown in Figure 12 that erects after the approximate right angle to a plurality of coil side 21a of section that will be positioned at the plane, can reduce significantly the angle of its conversion.Therefore, when the 21a of coil side section is erected, the damage that can not cause because of 17 piling tools such as excessive contact wire rod such as piling tool 52 etc.Even therefore for example wire rod 17 is thick line, the insulation tunicle of wire rod 17 can be not damaged yet, thereby can guarantee insulation or wire rod 17 insulation to each other between stator core 11 and the wire rod 17, its result, can avoid the problems such as ground connection or short circuit, significantly improve its reliability.
Then, from the core 11 outstanding 21b of coil end section, the 21c of end face on axially, by having used the extrusion molding of pressing jaw 56, and be pressed against the radial outside of core 11.At this, in the present invention, owing to make other the coil side section 21a adjacent with the outer circumferential side of the 21a of coil side section of a unit wave winding coil 21 be longer than the 21a of this coil side section, therefore as shown in Figure 1, from core 11 the both ends of the surface outstanding 21b of coil end section, 21c, its overhang reduces respectively from the outside diameter of core 11 to internal side diameter and tilts.So the 21b of this coil end section, 21c, its integral body is partial to the outside diameter of stator core 11 from the beginning, when pressing jaw 56 and carry out extrusion molding, be present in its inboard 21b of coil end section, 21c in core 11 sides that behind the end face of this core 11, enter into the outside diameter coil end 21b of section, 21c, namely inboard, therefore can make the 21b of this coil end section, 21c integral body discharge with comparalive ease the outside diameter of leading stator core 11.
In the present embodiment of illustration 3 phase formula electric rotating machines, as shown in Figure 4, in the groove 14 of the 21a of coil side section that does not insert initial coil 20, insert to form the 21a of coil side section of the coil of other phase, the stator coil 20 of such 3 phases is assembled on the single stator core 11 and obtains the stator 10 of electric rotating machine.In this stator 10, as shown in Figure 5, can with after the 21b of coil end section, the 21c of coil 20 of other phases of assembling guide to because of in the 21b of coil end section from initial coil 20 to radial outside that press, the space that 21c vacates, and be arranged on this space, can improve thus the fill-in ratio in the 21b of coil end section, near the 21c space end face of core 11.So can reduce the total length for the manufacture of the wire rod 17 of coil 20, reduce the copper loss of this coil 20, improve the efficient of the electric rotating machine that uses coil 20 of the present invention, and can realize the miniaturization of this electric rotating machine profile.
In addition, in the above-described embodiment, make the first and second latch for printed circuit 41,42 both sides' winding face tilt, so that the interval of the winding face of the winding face of the first latch for printed circuit 41 and the second latch for printed circuit 42 expands towards radial outside, yet also can make the winding face tilt of either party in the first and second latch for printed circuit 41,42.
In addition, in the above-described embodiment, with using different the first and second disks 43,44 of diameter, the circle that the 21b of coil end section, the 21c of coil side section 21a end are drawn is different and be illustrated along the unit wave winding coil 21 of taper seat.As long as install easily yet embed device 50, then also can make the first and second disks 43,44 diameter identical, make the 21b of coil end section of coil side section 21a end, the identical acquisition of circle that 21c draws along the unit cylindraceous wave winding coil 21 of cylindrical periphery face.
Claims (5)
1. a stator coil (20), formed continuously diametrically by a plurality of units wave winding coils (21), this unit wave winding coil (21) is with the coil side section (21a) in the groove (14) of insertion stator core (11) with from the axial outstanding coil end section (21b, 21c) of end face of described stator core (11), with crawl crooked mode circumferencial direction alternately form and be a ring around coil, it is characterized in that
Described stator core (11) is made of magnetic material, a plurality of teeth (13) that have circular annulus (12) and give prominence to towards the center of this annulus (12) from the inner peripheral surface of this annulus (12),
The coil side section (21a) of the other unit wave winding coil (21) adjacent with described annulus (12) side of a unit wave winding coil (21), the coil side section (21a) of being longer than a described unit wave winding coil (21).
2. stator coil according to claim 1 is characterized in that,
The diameter of a circle that coil end section (21b) on the end, one side of unit wave winding coil (21) coil limit section (21a) draws, different from the diameter of a circle that coil end section (21c) on the another side end of described coil side section (21a) draws.
3. the manufacture method of a stator coil is characterized in that,
With a plurality of the first latch for printed circuit (41) across the arranged spaced of stipulating circlewise,
Described the first latch for printed circuit (41) is set to the second latch for printed circuit (42): its with the quantity of the tooth (13) of stator core (11) divided by the quantity of the stator coil (20) that is assembled in single described stator core (11) after the numerical value of gained identical
Described stator core (11) is by having circular annulus (12) and consist of from the inner peripheral surface of this annulus (12) magnetic material towards the outstanding a plurality of teeth (13) in the center of this annulus (12),
To between described the first latch for printed circuit (41), be configured to ring-type by opposed a plurality of the second latch for printed circuit in interval (42) across regulation,
Wound wire (17) alternately on described the first latch for printed circuit (41) and described the second latch for printed circuit (42) makes its crawl bending and pitch of the laps,
Make either party in described first, second latch for printed circuit (41,42) or both sides' winding face tilt, so that the interval of the winding face of the winding face of described the first latch for printed circuit (41) and described the second latch for printed circuit (42) expands towards radial outside,
Make and a unit wave winding coil, (21) described annulus, (12) side adjacent and be a ring around the other unit wave winding coil, (21) coil side section, (21a), be longer than be a ring around a described unit wave winding coil, (21) coil side section, (21a), this unit wave winding coil, (21), to make at described the first latch for printed circuit, (41) and described the second latch for printed circuit, (42) upper replacing twined and the crooked wire rod that crawls, (17) more than 2 weeks
Obtain coil side section (21a) and coil end section (21b, 21c) are replaced the stator coil (20) that forms, wherein said coil side section (21a) is made of the wire rod (17) that is wrapped between described the first latch for printed circuit (41) and described the second latch for printed circuit (42), and described coil end section (21b, 21c) consists of by being wrapped in the upper wire rod (17) along circumferencial direction of described first, second latch for printed circuit (41,42).
4. the manufacture method of stator coil according to claim 3 (20) is characterized in that,
Make round different that a plurality of the second latch for printed circuit (42) circle that draws and a plurality of the first latch for printed circuit (41) that are configured to ring-type that are configured to ring-type draw, the diameter of a circle that the coil end section (21b) on the end, one side of the unit's of making wave winding coil (21) coil limit section (21a) draws is different from the diameter of a circle that coil end section (21c) on the another side end of described coil side section (21a) draws.
5. a stator for electric rotating machine is characterized in that,
The stator coil (20) that has claim 1 or 2 described stator coils (20) or obtain by claim 3 or 4 described manufacture methods.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009-118501 | 2009-05-15 | ||
| JP2009118501A JP5530121B2 (en) | 2009-05-15 | 2009-05-15 | Stator coil, manufacturing method thereof and winding machine |
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| CN101888126A CN101888126A (en) | 2010-11-17 |
| CN101888126B true CN101888126B (en) | 2013-03-20 |
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| DK2472705T3 (en) * | 2011-01-03 | 2014-05-19 | Siemens Ag | Stator element for an electric machine |
| JP5979786B2 (en) * | 2012-09-20 | 2016-08-31 | 日特エンジニアリング株式会社 | Winding device and winding method |
| JP5743162B2 (en) * | 2012-11-02 | 2015-07-01 | 株式会社デンソー | Stator and rotating electric machine |
| JP6284152B2 (en) * | 2014-05-29 | 2018-02-28 | 日特エンジニアリング株式会社 | Coil forming apparatus and coil forming method using the same |
| CN113036973B (en) | 2017-02-23 | 2024-07-23 | 博格华纳公司 | Electric machine comprising a stator with multiple layers of end turns |
| JP6785179B2 (en) * | 2017-03-31 | 2020-11-18 | 本田技研工業株式会社 | Rotating machine stator |
| JP7205417B2 (en) * | 2019-08-20 | 2023-01-17 | 株式会社デンソー | STATOR MANUFACTURING METHOD, STATOR MANUFACTURING APPARATUS |
| DE102021211589A1 (en) | 2021-10-14 | 2023-04-20 | Robert Bosch Gesellschaft mit beschränkter Haftung | Assembly method for inserting a hairpin braid of a plug-in winding into slots in a laminated core of a stator, computer program and assembly system |
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| JP3863010B2 (en) * | 2001-11-27 | 2006-12-27 | 株式会社小田原エンジニアリング | Stator manufacturing method and manufacturing apparatus |
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| CN1379529A (en) * | 2001-02-21 | 2002-11-13 | 株式会社萌利克 | Stator coil structure used on rotary magnetic field motor and its manufacturing method |
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| JP5530121B2 (en) | 2014-06-25 |
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| JP2010268616A (en) | 2010-11-25 |
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