CN106505758A - Stator structure in generator - Google Patents

Abstract

Stator structure in generator，The inner circumferential of the stator core around the rotor for being fixed in rotary shaft is provided with multiple grooves，Coil is wound with stator core，The coil is to link multiple coil edge using the multiple end turns being configured on the outside of the axial two ends of stator core and constitute，There are multiple grooves among each other and be incorporated in the groove separated in the circumference of stator core in the plurality of coil edge，The cooling fan that make cooling air stator core in circulate is fixed with the rotary shaft，Wherein，A side in the axial direction along stator core (56)，When the direction from the axis along rotary shaft is observed，In the inner circumferential than stator core (56) in the inner part，Be distributed multiple end turn (57b that short circuit between two grooves (55) gets up in the way of the opening portion (62) for inserting for allowing rotary shaft is formed in central part、58b).Thereby, it is possible to shorten the length of end turn, the reduction of amount of copper is realized, and, by increasing the area of dissipation of end turn, the raising of cooling effect can be realized.

Description

Stator structure in generator

Technical field

The present invention relates to the improvement of generator, more particularly to stator structure, in the generator, is fixed in rotation surrounding The inner circumferential of the stator core of the rotor of rotating shaft is provided with multiple grooves, is wound with coil on the stator core, and coil passes through Multiple end turns using configuration on the outside of the axial two ends of the stator core link multiple coil edge and constitute, described There are multiple grooves among each other and be incorporated in the ditch that the circumference along the stator core is kept apart in multiple coil edge In groove, the cooling fan for making cooling air circulate in the stator core is fixed with the rotary shaft.

Background technology

In the stator of generator, known in 1 grade of patent document have following structure：Multiple end turns are wound in interior The footpath ring-type bigger than the internal diameter of stator core is configured and is configured at the two ends of stator core.

Content of the invention

Problems to be solved by the invention

However, as disclosed in above-mentioned patent document 1, multiple end turns are being wound in internal diameter than stator core The big ring-type of internal diameter is configured and is configured in the structure at the two ends of stator core, and not only the length length of end turn, amount of copper are big, and And area that end turn is contacted with extraneous air is relatively small, it is difficult to radiate from end turn.

The present invention be in view of the situation and complete, it is therefore intended that the stator structure in a kind of generator is provided, can be contracted The length of short coil end, realizes the reduction of amount of copper, and, by increasing the area of dissipation of end turn, can achieve cooling effect The raising of fruit.

Means for solving the problem

In order to reach above-mentioned purpose, in the generator of the present invention, in the stator core around the rotor for being fixed in rotary shaft Inner circumferential be provided with multiple grooves, be wound with coil on the stator core, the coil be using be configured in described fixed Multiple end turns on the outside of the axial two ends of sub- iron core are constituted, the plurality of coil edge to link multiple coil edge There are multiple grooves among each other and be incorporated in the groove separated in the circumference of the stator core, described Be fixed with the cooling fan for making cooling air circulate in the stator core in rotary shaft, its fisrt feature is, along One side of the axial direction of the stator core, when the direction from the axis along the rotary shaft is observed, than the stator The inner circumferential of iron core position in the inner part, in the way of forming the opening portion for inserting for allowing the rotary shaft in central part disperses to match somebody with somebody It is equipped with the multiple end turns that will be coupled together between two grooves short circuit.

Additionally, the 2nd of the present invention the is characterised by, on the basis of the structure of the 1st feature, on multiple end turns The supporting member with multiple chimeric recesses is mounted with, these end turns is fitted together to the chimeric recess to remain many respectively The individual end turn is distributed.

Invention effect

According to the 1st feature of the present invention, it is configured in a side of the axial direction along stator core：Formed in central part and allow rotation Multiple end turns of the opening portion for inserting of rotating shaft, and short circuit between two grooves is got up, therefore, it is possible to shorten coil The length of end, realizes the reduction of amount of copper, further, it is possible to improve the cooling effect that the cooling air circulated in stator core brings Really, additionally, multiple end turns are distributed, therefore, it is possible to increase the area of dissipation of end turn, obtain more excellent cold But effect.

Additionally, according to the 2nd feature of the present invention, the multiple chimeric recess for making multiple end turns have with supporting member Chimeric and maintain each end turn be distributed state, therefore, it is possible to the increase of suppression component quantity, and simply can tie up Hold being distributed for multiple end turns.

Description of the drawings

Fig. 1 is the side view (the 1st embodiment) of the generator of the 1st embodiment.

Fig. 2 is the view (the 1st embodiment) in 2 direction of arrow of Fig. 1.

Fig. 3 is the view (the 1st embodiment) in 3 direction of arrow of Fig. 1.

Fig. 4 is the 4-4 line sectional views (the 1st embodiment) of Fig. 3.

Fig. 5 is the 5-5 line sectional views (the 1st embodiment) of Fig. 3.

Fig. 6 is the stereogram (the 1st embodiment) of the 1st bracket.

Fig. 7 is the stereogram (the 1st embodiment) of the 2nd bracket.

Fig. 8 is the stereogram (the 1st embodiment) of rotor and cooling fan.

Fig. 9 is the 9-9 line sectional views (the 1st embodiment) of Fig. 4.

Figure 10 is the stereogram (the 1st embodiment) of bobbin halfbody.

Figure 11 is the sectional view (the 1st embodiment) of the rotor of the 11-11 lines along Fig. 4.

Figure 12 is the stereogram (the 1st embodiment) of stator.

Figure 13 is the front view (the 1st embodiment) of one end of the direction observation stator from the axis along rotary shaft.

Figure 14 is the figure corresponding with Fig. 3 (the 1st embodiment) in the state of installation portion is provided with vibration-proof rubber.

Figure 15 is the figure corresponding with Fig. 3 (the 1st embodiment) in the state of installation portion is provided with installation leg.

Figure 16 is in the state of installation portion is provided with bearing and vibration-proof rubber in the way of fastening jointly and Fig. 3 pair The figure (the 1st embodiment) that answers.

Figure 17 is the stereogram (the 2nd embodiment) of the stator corresponding with Figure 12 of the 2nd embodiment.

Label declaration

26 rotors, 27 rotary shafts, 55 grooves, 56 stator cores, 57,58 Coil,

57a, 58a coil edge, 57b, 58b end turn, 62 opening portions, 80 tie up Part,

81 chimeric recesses.

Specific embodiment

Hereinafter, referring to the drawings, embodiments of the present invention are illustrated.

[the 1st embodiment]

With reference to Fig. 1～Figure 16, the 1st embodiment of the present invention is illustrated, first, in Fig. 1～Fig. 3, the generator Shell 21 has：1st bracket 22；The 2nd bracket 23 combined with the 1st bracket 22；It is installed in the side contrary with the 2nd bracket 23 The cover 24 of the 1st bracket 22.

In the lump with reference to Fig. 4 and Fig. 5, stator 25, one end of rotary shaft 27 is fixed with the 1st bracket 22 of the shell 21 Portion is bearing in the way of rotating freely via ball bearing 28 on the bearing portion 22a that the 1st bracket 22 has, by the stator 25 rotors 26 for surrounding are fixed on the rotary shaft 27, and the cooling fan 29 rotated together with the rotary shaft 27 is by the 2nd bracket 23 cover.

In the lump with reference to Fig. 6, the 1st bracket 22 is provided integrally with：The bearing portion 22a, which is formed as short cylinder shape so that institute The outer ring 28a for stating ball bearing 28 is embedded in；Substantially cylindric cylindrical portion 22b, which surrounds the stator 25；And multiple links Arm 22c, 22c ..., their one end and such as 4, multiple positions at the circumferentially spaced interval of the bearing portion 22a Position is connected, and the other end is connected with multiple positions at the circumferentially spaced interval of the one end in cylindrical portion 22b.

Press from both sides between the periphery of the outer ring 28a being embedded in the bearing portion 22a and the inner circumferential of the bearing portion 22a Back-up ring 30 is provided with, the back-up ring 30 prevents the ball bearing 28 from being axially moveable in the bearing portion 22a.

In the lump with reference to Fig. 7, the 2nd bracket 23 is provided integrally with the side of sidewall portion 23a of tubular and flange part 23b inwardly, the side wall The one end of portion 23a is combined with cylindrical portion 22b of the 1st bracket 22, and the 23b of flange part inwardly is from side of sidewall portion 23a's The other end is stretched out towards on the inside of radial direction, in the inner circumferential of the 23b of flange part inwardly, is formed with the opening portion 31 of circle.

The end by 23 side of the 2nd bracket of cylindrical portion 22b on the 1st bracket 22, one in the way of outside side is stretched out Be provided with body flat towards outward flange section 22d, this towards outward flange section 22d periphery, one in the way of being annularly connected Be formed with reference to teat 22e body, this combine teat 22e towards 23 side of the 2nd bracket slightly project with the 2nd bracket 23 on described in The one end of side of sidewall portion 23a is abutted.And, the combination teat 22e of the 1st bracket 22 is bolted 32,32 ... and is anchored on the 2nd support The side of sidewall portion 23a of frame 23, wherein, bolt 32,32 ... is configured at the circumferentially spaced interval of cylindrical portion 22b Multiple positions.

2nd bracket 23 is installed in the drive with the bent axle 34 as drive shaft coaxially linked with the rotary shaft 27 The body of the internal-combustion engine 35 of dynamic source such as internal combustion engine E, inwardly on flange part 23b, is being provided with configuration in institute described in the 2nd bracket 23 State the 36,36 ..., the 2nd bracket 23 of multiple such as 4 fastener holes around opening portion 31 by insert the fastener hole 36, Bolt 37,37 ... in 36 ... is fastened onto the body of the internal-combustion engine 35

The rotary shaft 27 has taper hole 38 in the end of the internal combustion engine E sides and is formed as cylindric, opening portion described in insertion 31 and the tapering 34a of the end of the bent axle 34 that is inserted in the 2nd bracket 23 be coaxially embedded within the taper hole 38, make from The bolt 39 that 24 sides of the cover are inserted in the rotary shaft 27 is screwed togather with the bent axle 34 and is fastened, and thus, makes the rotation Axle 27 and the bent axle 34 are by coaxial and can not link in the way of rotating against.

In addition, the 1st bracket 22 is being fixed with the stator 25 and is being fixed with the state of the rotor 26 in rotary shaft 27 2nd bracket 23 of the lower state with the body of the internal-combustion engine 35 is fastened onto is fastened, now, in the 1st bracket 22 It is separately provided for making multiple such as two alignment pins on the side of sidewall portion 23a of the combination teat 22e and the 2nd bracket 23 The chimeric location hole with the end 41 ... in 40 ... both ends, 42 ..., wherein, the one end of the rotary shaft 27 with can rotate from As mode be supported on the bearing portion 22a, the alignment pin 40 ... is for being positioned such that the rotary shaft 27 and described The axle center alignment of bent axle 34.

In the lump with reference to Fig. 8 and Fig. 9, the rotor 26 is make configuration in the central axis through the rotary shaft 27 one The magnet exciting coil 45,45 of the both sides of plane PL is wound in rotor core 43 via bobbin 44, wherein, rotor core 43 The multiple electromagnetic steel plates of stacking are formed, and are fixed in the rotary shaft 27.

Additionally, the one end of the rotary shaft 27 is pressed into the inner ring 28b of the ball bearing 28, in the ball bearing 28 It is fixed in and the rotor 26 between on the periphery of slip ring supporting mass 46 of the rotary shaft 27, with the rotary shaft 27 On axial direction, the mode of interval is provided with a pair of the slip rings 47,47 being electrically connected with a pair of magnet exciting coils 45,45, such as Fig. 4 Shown, by a pair of brushes 49,49 and the slip ring 47,47 of the holding of brush holder (brush holder) 48 supported by the 1st bracket 22 Sliding contact respectively.

The bobbin 44 be using synthetic resin be formed as a pair of bobbin halfbodies 50,50 of same shape with along The mode that the rotor core 43 is clipped from both sides on the direction of the axis of the rotary shaft 27 is arranged on the rotor core 43 On.

In the lump with reference to Figure 10, the bobbin halfbody 50 is provided integrally with：Cylinder support 50a, which is along the rotation The axis of axle 27 and be located at the outside of the rotor core 43, insert the rotary shaft 27；A pair of end plate portion 50b, 50b, it By way of the one plane PL extension along the central axis by the rotary shaft 27 with the cylinder support The inner end both sides of 50a are connected, and abutting opposed with the outer end of the axis along the rotary shaft 27 of the rotor core 43； Respectively there are 2 groups inner side side plate 50c, 50c ... for a pair, their length with one plane PL side of these end plates 50b ... The both ends in degree direction are respectively connected with, and extend on the axis direction of rotary shaft 27 along one plane PL；Respectively have 2 a pair Outside side plate 50d, 50d ... of group, they with from the side away from one plane PL and the inner side side plate 50c, The opposed modes of 50c ..., extend on the axis direction of rotary shaft 27, and the length direction two ends with end plate 50b ... Portion is respectively connected with；Base plate 50e, 50e ..., they make inner side side plate 50c, 50c ... opposite each other and outside side plate respectively Couple together between portion 50d, 50d ...；A pair of inside limit plate portion 50f, 50f, they with the inner side side plate 50c, The mode that 50c ... is connected coplanarly is erect and is arranged in end plate 50b, 50b, and outer with the cylinder support 50a End is connected；A pair of link plate portions 50g, 50g, its make to limit plate portion 50f, 50f along the inner side of one plane PL Both ends between link up.

By described inner side side plate 50c, 50c ... outside side plate 50d opposed with side plate 50c, 50c ... on the inside of this, 50d ... and the base plate that will be coupled together between side plate 50c, 50c ... on the inside of these and inner side side plate 50d, 50d ... 50e, 50e ... form respectively the groove 51,51 ... opened towards outside, paired 2 on the direction along one plane PL Group groove 51,51 ... is formed on the bobbin halfbody 50 i.e. bobbin 44.Additionally, the inner side limit plate portion 50f, On 50f, the opening 52,52 ... positioned at the both sides of the cylinder support 50a is provided with, one on the bobbin halfbody 50 Reinforcement frame portion 50h, 50h ... of on the direction of axis along rotary shaft 27 crossing these openings 52,52 is formed with body.

In the lump with reference to Figure 11, on the direction along one plane PL of the central axis by the rotary shaft 27 In paired groove 51,51, coil edge 45a, 45a of magnet exciting coil 45 is accommodated with respectively.The two ends of the magnet exciting coil 45 End turn 45b, 45b by connect to coil edge 45a, 45a in the way of be configured to：Plate portion is limited using the inner side 50f limits the movement towards one plane PL side, and covers end plate 50b.

And, such as Figure 11 expresses, and on the bobbin 44, sets in part corresponding with the outer end of the rotor core 43 It is equipped with and separates teat 50i, 50i, end turn 45b, 45b of the magnet exciting coil 45 is divided into edge by the separation teat 50i, 50i The part 45ba ... of the inner side of the radial direction of the rotary shaft 27 and part 45bb ... in outside, and teat is separated described The both sides of the circumference along the rotary shaft 27 of 50i, 50i, in part 45ba ... and the part in the outside of the inner side Space 53,53 is respectively formed between 45bb ....

In addition, in end plate 50b of the bobbin 44, being provided integrally with supporting with end plate 50b Platform 50j, 50j, the axial direction of the supporting station 50j, 50j from the length direction central portion of end plate 50b towards the rotary shaft 27 Outside is swelled and supports described end turn 45b, 45b, in the circumference along the rotary shaft 27 of described supporting station 50j, 50j Both sides, between the end turn 45b ... and end plate 50b ... formed air flue 54,54.And, described point The supporting station 50j ... is provided projectingly on from teat 50i ....

In the periphery at the length direction both ends of end plate 50b, outside restriction has integratedly been provided projectingly respectively prominent Portion 50k, 50k ..., limit teat 50k, 50k ... restriction end plate 50b and are directed away from one plane PL on the outside of this The movement of side, in the outer end of the supporting station 50j ..., is integratedly provided projectingly restricted teat 50m ..., the restriction teat Movements of the end turn 45b ... are positioned on supporting station 50j ... by 50m ... restrictions towards outside.

And, in the both sides of the supporting station 50j, formed between the end turn 45b and end plate 50b Air flue 54,54 in the outer end of the radial direction along the rotary shaft 27, on the outside of the supporting station 50j and described two Limit the outside between teat 50k, 50k towards rotor 26 to open, the radius side along the rotary shaft 27 of air flue 54,54 To the inner through the inner side limit plate portion 50f on arrange opening 52 ..., in the axial direction along the rotary shaft 27 Outer end, towards the rotor 26 outside open.

In the lump with reference to Figure 12, the stator 25 is to wind multiple output windings 57,57 ... and a pair on stator core 56 Magnet exciting coil 58,58, wherein, stator core 56 is laminated multiple electromagnetic steel plates and forms, and is provided with inner circumferential many Individual groove 55 ....

And, the stator 25 is fixed on the 1st bracket 22 in the way of being surrounded by cylindrical portion 22b of the 1st bracket 22, The cooling air aspirated by the cooling fan 29 can circulate between the rotor 26 and the stator 25, also, can also Enough circulations between the inner circumferential of the periphery of the stator 25 and cylindrical portion 22b.

Such as 4, multiple positions of the circumference of the periphery of the stator core 56 in the stator 25 position is pressed into In cylindrical portion 22b.And, in order to the stator core 56 is inserted into cylindrical portion 22b from 23 side of the 2nd bracket easily Interior, the inner circumferential of cylindrical portion 22b is formed as the taper with 23 side of the 2nd bracket as maximum gauge, in the centre of cylindrical portion 22b On 4 positions at the circumferentially spaced interval in portion, be provided with and portion be pressed into for being pressed into the periphery of the stator core 56 59….

These are pressed into portion 59 ... by the inner surface being integratedly provided projectingly in cylindrical portion 22b 2 or 3 ridges 61st, 61 ... are constituted, and the ridge 61,61 ... is pressed into face in terminal part with what the axis along the rotary shaft 27 extended 60 ..., and extend parallel on the direction of the axis along the rotary shaft 27, in each ridge 61,61 ... each other, cold But air can circulate between the inner circumferential of the periphery of the stator 25 and cylindrical portion 22b.

In the lump with reference to Figure 13, multiple output windings 57,57 ... and a pair of magnet exciting coils 58,58 are described fixed using configuration Multiple end turn 57b, 57b ..., 58b, 58b on the outside of the axial two ends of sub- iron core 56 by multiple coil edge 57a, 57a ..., 58a ..., 58a ... are linked up, and described end turn 57b, 57b ..., 58b, 58b have multiple grooves among each other 55th, 55 ... and it is incorporated in along circumferentially spaced two grooves 55,55 of the stator core 56.

And, the axial direction along the stator core 56 a side (in this embodiment, with 29 phase of cooling fan A reciprocal side), when the direction from the axis along the rotary shaft 27 is observed, in than the stator core 56 All positions in the inner part, are distributed multiple coil-ends that short circuit (short cut) between two grooves 55,55 gets up Portion 57b, 57b ..., 58b, 58b, are tied up using securing member 63,63 ... and constitute these end turns 57b, 57b ..., 58b, 58b Multiple wires and the opening portion 62 for inserting for allowing the rotary shaft 27, each end turn being distributed is formed with central part 57b, 57b ..., 58b, 58b interfix each other by infiltration varnish.Furthermore, it is also possible to substitute securing member 63 and use electricity absolutely The adhesive tape or bunch of edge.

Fig. 4, Fig. 5 and Fig. 8 are paid close attention to again, and the cooling fan 29 is provided integrally with：Cylindric mounting cylinder portion 29a, its Chimeric with the rotary shaft 27 and fixed in the 2nd bracket 23；Cone cylinder portion 29b, its are contrary with the rotor 26 with direction Direction and enlarged diameter, and miner diameter end is connected with the mounting cylinder portion 29a setting；Multiple blade 29c, 29c ..., their cardinal extremity Portion is connected with the position at the circumferentially spaced interval in the periphery of the cone cylinder portion 29b setting；And the demarcation strip 29d of ring flat-plate shape, Which is formed as ring-type in the way of opposed with the end by 29 side of the cooling fan of the stator 25, also, with multiple institutes The peripheral part for stating blade 29c, 29c ... is all connected setting, in the inner circumferential of the cone cylinder portion 29b, has integratedly been provided projectingly multiple Ribs 29e, 29e ....

In the bottom of the 2nd bracket 23, discharge cylinder portion 23c is provided integrally with, discharge cylinder portion 23c is used for making from described cold But the cooling air that fan 29 is sent is discharged to side, in the outer end opening portion of discharge cylinder portion 23c, is provided with and is opened the outer end Oral area is divided into multiple louvres 64.

With regard to Fig. 1, Fig. 3～Fig. 5, the cover 24 is formed as having bottom tube-like by synthetic resin, and is provided integrally with tubular Side of sidewall portion 24a and end wall 24b for closing the outer end of side of sidewall portion 24a, the cover 24 are anchored on the by bolt 65,65 Boss portion 22f, 22f of the cylindrical shape that the both sides of the bearing portion 22a on 1 bracket 22 are integrally provided, thus by the cover 24 are fixed on the 1st bracket 22.

In the bottom of the side of sidewall portion 24a of the cover 24, multiple 1st inlet holes 66,66 ... open downward are provided with. Additionally, in the both sides of the side of sidewall portion 23a, apart from top to bottom it is positioned apart from the direction of the axis along the rotary shaft 27 On multiple 2nd inlet holes 67,67 ... for extending in long way, also, with can't see when side-looking is observed these the 2nd inlet holes 67, 67 ... mode is provided with shielding portion 24c, the 24c ... projected from the upper limb of the 2nd inlet hole 67,67 ....Additionally, in the cover 24 On end wall 24b on, be provided with multiple 3rd inlet holes 68,68 ..., by the work of the cooling fan 29, cool down Air is inhaled into the shell 21 from the 66,66 ..., the 2nd inlet hole 67,67 ... of the 1st inlet hole and the 3rd inlet hole 68,68 ... Interior.

In addition, the 1st bracket 22 one end i.e. by described cover 24 sides end bottom, be provided integrally with left and right one To installation portion 22g, 22g, when observing from 24 sides of the cover, described installation portion 22g, 22g are configured in the lower section of the cover 24, and are had There is the flat mounting surface 70,70 in the face of 24 sides of the cover.

These installation portions 22g, 22g can be made to switch between following state, have the supporting leg of generator Versatility：As shown in figure 14, when being bearing in generator on such as stand 69 via vibration-proof rubber 72,72, using bolt 71, 71 installing vibration-proof rubber 72,72 described in a pair；As shown in figure 15, generator is being bearing in such as stand via installation leg 73 When on 69, the installation leg 73 is installed using a pair of bolts 71,71；And as shown in figure 16, by based on a pair of bolts 71,71 Common fastening is installing for installing the support plate 74 and the vibration-proof rubber 72,72 of exhaust silencer.

Next, the effect to the 1st embodiment is illustrated, stator 25 is fixed on shell 21, is wrapped by the stator 25 The rotor 26 for enclosing is fixed on the rotary shaft 27, and wherein, the shell 21 has：There is the axle of the one end of e axle supporting rotary shaft 27 1st bracket 22 of bearing portion 22a；And the 2nd bracket 23 of the cooling fan 29 rotated together with rotary shaft 27 is covered, but, The stator 25 is fixed with 1st bracket 22, also, so that the cooling that is aspirated by the cooling fan 29 on the 1st bracket 22 The mode that air circulates between the periphery of the stator 25 is provided integrally with cylindrical portion 22b around the stator 25, 2nd bracket 23 is combined with cylindrical portion 22b, therefore, it is possible to make cooling air circulate along the periphery of stator 25, improves stator 25 cooling effectiveness, additionally, can be in conjunction with the 1st bracket 22 and the 2nd bracket 23 without using long run through bolt, being capable of cost of implementation Decline.

Additionally, in cylindrical portion 22b, therefore the multiple positions of the circumference of the periphery of the stator 25 are pressed into, inciting somebody to action When stator 25 is fixed to 1 bracket 22, number of components can be reduced.

Additionally, in the cooling fan 29, it is fixedly installed with the stator 25 by 29 side of the cooling fan The demarcation strip 29d of the opposed ring flat-plate shape in end, therefore, it is possible to make the circulation of the cooling air next along the periphery circulation of stator 25 Direction changes towards 27 side of rotary shaft in the end by 29 side of cooling fan of stator 25, thereby, it is possible to utilize cooling air efficient The end by 29 side of cooling fan of ground cooling stator 25.

Both ends additionally, on the 1st bracket 22 and the 2nd bracket 23 being separately provided for making multiple alignment pins 40 ... are embedding The location hole 41 ... of conjunction, 42 ..., the plurality of alignment pin 40 ... is for making before the 2nd bracket 23 is fastened with the 2nd bracket 23 The axle center alignment of the rotary shaft 27 and the bent axle 34 being positioned, wherein, the 2nd bracket 23 be fastened onto have with The mechanism body 35 of the internal combustion engine E of the bent axle 34 that rotary shaft 27 coaxially links, the 2nd bracket 23 is in using the 1st bracket The supporting of the one end of the rotary shaft 27 is the state that can rotate freely by 22 bearing portion 22a, therefore, and to the 1st bracket 22 modes for carrying out chimeric positioning with the 2nd bracket 23 are compared, it is not necessary to concavo-convex fitting portion, will not increase the profile of the 2nd bracket 23 Shape, can increase the external diameter of cooling fan 29 to realize the further raising of cooling effect.

Additionally, rotor 26 is with configuration on the bobbin 44 for being installed in the rotor core 43 being fixed in rotary shaft 27 Magnet exciting coil 45,45 is wound by way of the both sides of plane PL of the central axis by the rotary shaft 27 and is constituted , on the bobbin 44, it is provided with part corresponding with the axial outer end of the rotor core 43 and separates teat 50i ..., separation teat 50i ... are by the coil-end at the two ends of the magnet exciting coil 45 ... of the axial direction along the rotary shaft 27 Portion 45b, 45b are divided into the part 45ba ... of the inner side of the radial direction along the rotary shaft 27 and part 45bb ... in outside, In the both sides of the circumference along the rotary shaft 27 for separating teat 50i ..., in part 45ba ... and the institute of the inner side Space 53 is respectively formed between the part 45b ... for stating outside ..., therefore, it is possible to increase the end turn 45b of magnet exciting coil 45 Area of dissipation, effectively cool down end turn 45b, and then cool down magnet exciting coil 45, the raising of generating efficiency can be realized.

Additionally, in end plate 50b that the bobbin 44 has, being provided integrally with end plate 50b and propping up Cushion cap 50j, wherein, end plate 50b is opposed with the axial outer end of rotor core 43 and abuts, and supporting station 50j is from these End plate 50b is carried out towards the axially external protuberance of the rotary shaft 27 to the end turn 45b of the magnet exciting coil 45 Supporting, in the both sides of the circumference along the rotary shaft 27 of the supporting station 50j, at the end turn 45b and the end Air flue 54,54 is defined between plate portion 50b, and the teat 50i that separates is provided projectingly on the supporting station 50j, thus, energy Enough area of dissipations for further increasing end turn 45b, more effectively cool down end turn 45b and then cool down magnet exciting coil 45, The further raising of generating efficiency can be realized.

Additionally, in the inner circumferential of the stator core 56 around the rotor 26 for being fixed in rotary shaft 27, being provided with multiple grooves 55th, 55 ..., multiple output windings 57,57 ... and a pair of magnet exciting coils 58,58 are wound with the stator core 56, described defeated It is to utilize to be configured on the outside of the axial two ends of the stator core 56 to go out coil 57,57 ... and a pair of magnet exciting coils 58,58 Multiple coil edge 57a, 57a ..., 58a ... are coupled together and are constituted by multiple end turn 57b, 57b ..., 58b, 58b, There are multiple grooves 55,55 ... among each other and be incorporated in the plurality of coil edge 57a, 57a ..., 58a ..., 58a Along the circumferentially spaced groove 55,55 of the stator core 56, in a side of the axial direction along the stator core 56, From the axis along the rotary shaft 27 direction observe when, the position in the inner part of the inner circumferential than the stator core 56 with The mode that the opening portion 62 for inserting for allowing the rotary shaft 27 is formed with central part be dispersedly configured with by two grooves it Between short circuit get up multiple end turn 57b, 57b ..., 58b, 58b, therefore, it is possible to shorten end turn 57b, 57b ..., 58b, The length of 58b is realizing the decline of amount of copper, further, it is possible to improve the cooling that the cooling air of circulation brings in the stator core 56 Effect, and, the area of dissipation of end turn 57b, 57b ..., 58b, 58b can be increased, more excellent cooling effect is obtained.

[the 2nd embodiment]

For the 2nd embodiment of the present invention, illustrate with reference to Figure 17, in a side of the axial direction along stator core 56, In the direction observation from the axis along the rotary shaft 27 (with reference to the 1st embodiment), multiple end turn 57b, 57b ..., The position of 58b, 58b in the inner circumferential than the stator core 56 in the inner part is configured to play short circuit between two grooves 55,55 Come, on these end turns 57b, 57b ..., 58b, 58b, be provided with and be respectively provided with the multiple of multiple chimeric recesses 81,81 ... Strapping elements 80,80 ....

And, each end turn 57b, 57b ..., 58b, 58b are entrenched in the chimeric recess 81,81 ... of the strapping elements 80 In, thus maintain to be distributed each end turn 57b, 57b ..., 58b, 58b in the way of forming opening portion 62 in central part State, in the state of strapping elements 80 being installed ..., each end turn 57b, 57b ..., 58b, 58b are infiltrated varnish each other and Interfix.

According to the 2nd embodiment, it is capable of the increase of suppression component quantity, and multiple coil-ends can be simply maintained Portion 57b, 57b ..., 58b, 58b are distributed.

More than, embodiments of the present invention are illustrated, but the invention is not restricted to above-mentioned embodiment, without departing from In the case of its purport, various design alterations can be carried out.

Claims (2)

1. the stator structure in a kind of generator, is surrounding the stator core of the rotor (26) being fixed in rotary shaft (27) (56) inner circumferential is provided with multiple grooves (55), is wound with coil (57,58), the coil on the stator core (56) (57,58) be using be configured in multiple end turns (57b, 58b) on the outside of the axial two ends of the stator core (56) come Link multiple coil edge (57a, 58a) and constitute, the plurality of coil edge (57a, 58a) exists multiple among each other Groove (55) and it is incorporated in the groove (55) that keeps apart in the circumference of the stator core (56), in the rotary shaft (27) cooling fan (29) for making cooling air circulate in the stator core (56) is fixed with, it is characterised in that on edge A side of the axial direction of the stator core (56), when the direction from the axis along the rotary shaft (27) is observed, Than the inner circumferential position in the inner part of the stator core (56), inserting for rotary shaft (27) is allowed to be formed in central part The mode of opening portion (62) is distributed multiple end turns (57b, 58b) that short circuit between two grooves (55) gets up.

2. the stator structure in generator according to claim 1, it is characterised in that in multiple end turns The strapping elements (80) with multiple chimeric recess (81) is mounted with (57b, 58b), makes these end turns (57b, 58b) point Not with described chimeric recess (81) chimeric being distributed with maintenance multiple described end turn (57b, 58b).