CN100384057C - AC generator for vehicle - Google Patents
AC generator for vehicle Download PDFInfo
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- CN100384057C CN100384057C CNB021440166A CN02144016A CN100384057C CN 100384057 C CN100384057 C CN 100384057C CN B021440166 A CNB021440166 A CN B021440166A CN 02144016 A CN02144016 A CN 02144016A CN 100384057 C CN100384057 C CN 100384057C
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Abstract
The present invention provides a high-power AC generator for vehicles, which can reduce noises called wind noise and electromagnetic noise and improve the magnetic circuit of a rotor to increase magnetic flux. The present invention is characterized in that the AC generator for vehicles is arranged in at least one pole shoe in a plurality of first pole shoes and second pole shoes oppositely arranged at the inner diameter surface of a stator core; the outermost periphery of a base shoulder is provided with a chamfering part composed of the surfaces of three points A, B and C, wherein the point B is formed on the circumferential-direction end surface of the base shoulders of pole shoes (18a), (19a) and is formed on the cone-shaped initial line formed by the outer periphery surface of the base shoulders; the point C is formed on the twist sloping parts of the pole shoes (8a), (9a); the distance between the end surface of the base side of the pole shoes (8a), (9a) and the end surface of a stator core (4) is set as L1, and the point A is formed on the circumferential-direction end surface of the pole shoes (8a), (9a) with a distance of L1/4 to 7*L1/8 away from the end surface of the stator core (4).
Description
Technical field
The present invention relates to a kind of vehicle-mounted dlternator that drives by vehicle internal combustion engine.
Background technology
For guaranteeing optimum performance, vehicle-mounted dlternator will cool off, so that whole generator remains on below certain limit temperature when operation.As cooling means be, fan be fixed on the plectane of magnetic pole wheel of rotor, and be configured in casing inside, make this cooling fan and stator winding subtend, sufficient heat can be radiated away.Thus, the cooling degree improves, and the power of alternating current generator output is increased, but the problem of its existence is that because air eddy in the casing, it is big that the wind noise takes place.In order to solve such problem, once the someone proposed following scheme in the past.
Figure 14 is for example special profile of opening the disclosed vehicle-mounted dlternator in the past of flat 5-161286 communique, Figure 15 shows that the oblique view of 1 magnetic pole wheel of the alternating current generator rotor of Figure 14.Figure 16 is the magnetic pole wheel end view drawing of looking from arrow F direction, and Figure 17 is the I-I line profile of Figure 16, and Figure 18 is the expanded view of a utmost point tooth of magnetic pole wheel.
Above-mentioned alternating current generator has sheet metal stacked, and the stator assembly of the stator core 4 of a plurality of grooves that housing stator winding 5 is set is arranged.The stator assembly remains between the front rack 1 and tail-bracket 2 that mutually combines with bolt.
The rotor inductor coils end is connected hollow connector 26,27.Connector 26,27 is connected on 2 slip rings 14 that cooperate separately with 2 brushes 15 by rotating shaft 7.
The back side of each magnetic pole wheel 8,9 is fixed with fin 11,12 respectively, and each magnetic pole wheel 8,9 possesses the circle flat board 50 with rotating shaft 7 axis normal, forms the concentric through hole 51 of intercalation rotating shaft 7 at dull and stereotyped 50 central parts of circle.The dull and stereotyped 50 outer peripheral edges one of circle constitute 6 utmost point teeth 52, and described utmost point tooth 52 uniformly-spaced dispose, take turns towards the opposing party's magnetic pole, bashfully, and are provided with the shaft axis almost parallel.
30 ° of the utmost point tooth 52 circumferential displacements of the utmost point tooth 52 relative magnetic pole wheels 9 of magnet-wheel 8, the utmost point tooth of each magnetic pole wheel inserts the other side's side pole between cog mutually, as shown in figure 15, forms the annular magnetic cover of opening.The polarity of 2 groups of utmost point teeth 52 is opposite polarity each other, forms the continuous magnetic pole opening that the wire casing of alternative electric generation utmost point stator is shown reversed polarity.
Shown in each figure among Figure 15～Figure 18, from the stator direction, each utmost point tooth forms platform shape.The base portion of the cross direction of each utmost point tooth is engaged in magnetic pole wheel circle dull and stereotyped 50.In more detail, each utmost point tooth 52 by cylindrical external surface 54, by each chamfered section shown in symbol 57 and 59, be engaged in 2 sides 56 of outer surface 54 and 58 and form.
On the vertical direction of circle dull and stereotyped 50, side 56 and 58 parallel with the symmetry axis X-X of utmost point tooth 52.In that to surpass circle partly dull and stereotyped, it is the inclination of the convergence of symmetry that side 56 and 58 is done with axis X-X, combines by having formed with the end end face 60 of the end of the vertical utmost point tooth 52 of axis X-X, and outer surface 54 is engaged on the back side 62 of circle flat board 50 by inclined plane 64.
Each utmost point tooth 52 have can be used for preventing noise with, be at least 1 chamfered section 66.This chamfered section, a side and outer surface 54 and side 56 or 58 adjacency are on the other hand with face 64 and 62 adjacency.The angle of inclination of its anti-noise chamfered section 66 is each face tilt angle differences that are adjacent.
, because chamfered section 66 is excessive, there is the problem that power output is reduced because of chamferingization in vehicle-mounted dlternator in the past.Figure 19 is the partial section view of vehicle-mounted dlternator in the past, is the flowspec figure of magnetic flux.Shown in arrow among the figure, the magnetic flux rill forms from the magnetic pole wheel 8 of rotor and passes through stator core 4, enters rotor again, turns back to the magnetic circuit of magnetic pole wheel 8 by magnetic pole wheel 9.Here, the chamfered section 66 of magnetic pole wheel 8 (or 9) is big, and the section length 1 that the magnetic pole that magnetic flux is passed through is taken turns 8 shoulders shortens.Thereby exist because of the basal area of magnet-wheel 8 at this diminishes, the magnetic flux that can pass through reduces, and the magnetic circuit characteristic is poor, the problem of power output minimizing.
The present invention solves foregoing problems and studies, and its purpose is: reduce the noise of wind noise, electromagnetic noise etc., and improve rotor magnetic loop, magnetic flux is increased, to obtain high-power vehicle-mounted dlternator.
Summary of the invention
Vehicle-mounted dlternator of the present invention comprises: the stator core with stator winding; Be arranged on this frame bore side and be fixed on unshakable in one's determination and second rotor core of the first rotor in the rotating shaft; This first rotor iron core and second rotor core are carried out magnetized magnetizing coil; Outstanding from the first rotor iron core and second rotor core to rotor shaft direction, across the staggered engagement configuration of predetermined gap, simultaneously across many 1st and 2nd pole shoe of predetermined gap in the face of the aperture surface setting of stator core, it is characterized in that, in the 1st and the 2nd pole shoe, at least one side's the pole shoe, have: a bit (B) on the taper start line that forms on the outer peripheral face of basic shoulder by connecting the chamfered section that following face forms at 3, a bit (C) on the distortion rake of pole shoe, and the end face that is positioned at the axial distance stator core when will the distance from pole shoe base portion side end face to the stator core end face being made as L1 is a bit (A) on the circumferential end faces of L1/4～7 * L1/8.
Again, chamfered section forms on the 1st and the 2nd pole shoe.
Again, chamfered section forms in the both sides of basic shoulder circumferential end faces.
Again, a bit radially overlapping on the distortion rake of pole shoe with the T shape bar top of stator core.
Again, on stator core end face and the pole shoe curved incline face a bit distance, be controlled at below the distance till the intersection point the distortion rake of T shape bar from described stator core end face to described stator and described pole shoe.
Be below half of circumferential width of described pole shoe in the distance between 2 on the taper start line of the basic shoulder of two chamfered section that the circumferential end faces of pole shoe base shoulder forms again.
Again, the groove number of stator core is every extremely every phase 2 grooves.
Again, chamfered section is to form with curved surface.
Again, chamfered section is connected with R shape with the face of adjacency with it.
Make the taper starting point on the basic shoulder of pole shoe consistent with the described end face axial of stator core again.
Again, in stator core, wide the having nothing in common with each other of adjacent T shape bar.
Again, at least one side's end face has ring-type fan in unshakable in one's determination and second rotor core of the first rotor, and the fan external diameter is more unshakable in one's determination or second rotor core is little than the first rotor.
Again, stator winding has the end winding that extends to foreign side from the stator core end face, and the end plate of the inner peripheral surface at least that covers this end winding is set.
Again, stator winding has the end winding that extends in foreign side from the stator core end face, and this end winding makes stator winding circumferentially locate configuration.
Description of drawings
Fig. 1 is the vehicle-mounted dlternator profile of embodiments of the present invention 1.
Fig. 2 is the oblique view of the rotor of DC dynamo used in vehicle of embodiments of the present invention 1.
Fig. 3 is the expanded view that the rotor of DC dynamo used in vehicle pole shoe of embodiments of the present invention 1 enlarges.
Fig. 4 is the performance plot of the vehicle-mounted dlternator of embodiments of the present invention 1.
Fig. 5 is the leakage flux key diagram that the pole shoe of the rotor of DC dynamo used in vehicle of embodiments of the present invention 2 leaks.
Fig. 6 is the vehicle-mounted dlternator performance plot of embodiments of the present invention 2.
Fig. 7 is the expanded view of expansion of pole shoe of the rotor of DC dynamo used in vehicle of embodiment of the present invention 3.
Fig. 8 is the vehicle-mounted dlternator performance plot of embodiments of the present invention 3.
Fig. 9 is the expanded view that the pole shoe of the rotor of DC dynamo used in vehicle of embodiments of the present invention 4 enlarges.
Figure 10 (a) is the expanded view of an expansion of the vehicle-mounted dlternator of example in the past.
Figure 10 (b) is the expanded view of an expansion of the vehicle-mounted dlternator of embodiments of the present invention 4.
Figure 11 is the expanded view of an expansion of the vehicle-mounted dlternator of embodiment of the present invention 7.
Figure 12 is the stator oblique view of the vehicle-mounted dlternator of embodiments of the present invention 8.
Figure 13 is the stator oblique view of the vehicle-mounted dlternator of embodiments of the present invention 9.
Figure 14 is the profile of vehicle-mounted dlternator in the past.
Figure 15 is the magnet-wheel oblique view of the rotor of vehicle-mounted dlternator in the past.
Figure 16 is the magnet-wheel front elevation of the rotor of vehicle-mounted dlternator in the past.
Figure 17 is the magnet-wheel profile of the rotor of vehicle-mounted dlternator in the past.
Figure 18 is the expanded view that the pole shoe of the rotor of vehicle-mounted dlternator in the past enlarges.
Figure 19 is the key diagram of the flux flow of vehicle-mounted dlternator in the past.
Embodiment.
Fig. 1 is the vehicle-mounted dlternator profile of embodiment of the present invention 1, and Fig. 2 is Fig. 1 rotor oblique view.In the drawings, the 1st, front rack, the 2nd, tail-bracket, the 3rd, to seize on both sides by the arms at the stator of front rack 1 with tail-bracket 2, it is made of the stator winding 5 in the wire casing of stator core 4 and coiling insertion stator core 4.
The 6th, fasten at two ends by the rotor of front rack 1, by the first rotor iron core 8 with the rotating shaft 7 of tail-bracket 2 supportings; The 2nd rotor core 9; Be wound on the magnetizing coil 10 between two rotor cores 8 and 9; Be arranged on the fan 11,12 at the two rotor core back sides; Be arranged on the belt pulley 13 in the outside of rotating shaft 7 front racks 1 side; The slip ring 14 inboard, that power to magnetizing coil 10 that is arranged on rotating shaft 7 tail-brackets 2 sides constitutes.
The 15th, to the brush of slip ring 14 supplying electric currents, the 16th, the brush carrier of maintenance brush, the 17th, the alternating current of stator winding 5 is exported the rectifier of rectification, the 18th, the electric current of adjustment magnetizing coil 10, the pressurizer of the output voltage of control stator winding 5.
Form many pole shoe 8a and the 9a that are roughly trapezoidal shape respectively in the first rotor the 8 and the 2nd rotor core 9 unshakable in one's determination, it is partly having on rotation direction width than the rake of the distortion of top ends stenosis with stator core 4 aperture surface subtends, and has from the taper of basic shoulder to end face.Pole shoe 8a and 9a are configured to be meshing with each other by the gap of predetermined distance, and alternately by the N utmost point and the magnetization of the S utmost point.
In the vehicle-mounted dlternator that constitutes like this, switch on to magnetizing coil 10 by brush 15, slip ring 14 by the storage battery of not shown lift-launch on vehicle, rotor 6 passes through belt pulley 13 by internal combustion engine drive, rotor 6 just produces rotating magnetic field, its voltage is supplied with not shown load through rectifier 17 rectifications.
The present embodiment feature is, in the pole shoe 8a of rotor 6, the chamfered section 100 that 9a is provided with following explanation.Fig. 3 is the top figure of Fig. 2 rotor pole shoe 8a.In addition, below be base description with pole shoe 8a, pole shoe 9a and pole shoe 8a similar shape are suitable for certainly too.
As shown in Figure 3, chamfered section 100 is the B points on the taper start line that is formed by the outer peripheral face at pole shoe 8a base shoulder, C point on the pole shoe 8a distortion rake, and the distance of pole shoe 8a base side end face and stator core 4 end faces (only putting down in writing the leading section of T shape bar 41 in the drawings) is when being made as L1, from stator core 4 end face L1/4～7 * L1/8 apart from the pole shoe 8a circumferential end faces of a on 3 joint faces compositions such as A point.
Fig. 4 is the key diagram of the properties influence of 100 pairs of output of a generator of explanation chamfered section, wind noise.In the drawings, the figure longitudinal axis is represented the sound pressure level (dB) and the generator output current (A) of wind noise, and transverse axis is represented afore-mentioned distance a.In addition, the data when being full load 5000rpm, the data when being idling lotus 10000rpm about the wind noise about output current.Such as shown, clear and definite wind noise properties is to be 90dB when distance aL1/4 is following, reaches more than the L1/4 at distance a, then drops to 83dB, becomes certain substantially sound level.On the one hand clear and definite, output current is 101A approximately at distance a below 7L1/8, basicly stable, and apart from a greater than 7L1/8, then output current sharply reduces.That is, have relation as described below: chamfered section 100 is big, then has the wind noise to reduce effect; If chamfered section 100 is excessive, and surpasses, then illustrate that the sectional area that the magnetic pole that magnetic flux is passed through is taken turns 8 basic shoulders diminishes like that in the problematic item as described above, output worsens.
Therefore, in the present embodiment, be all to be optimum value with wind noise, output current, what just reach L1/4～7 * L1/8 with distance a be the A point a bit, formation chamfered section 100.It is constant to obtain wind noise minimizing effect thus, improves the magnetic circuit of rotor 6, can access the effect of High Output Current.
Again, in aforementioned embodiments 1, be that the example that the pole shoe 9a of pole shoe 8a, second rotor core with regard to the first rotor iron core 8 is provided with chamfered section 100 describes, and chamfered section 100 is set on a certain pole shoe among the pole shoe 9a of the pole shoe 8a of the first rotor iron core 8 and second rotor core 9, also obtain effect same certainly.
Again, aforementioned embodiments 1 is that the example that the circumferential end faces with regard to pole shoe 8a both sides is provided with chamfered section 100 describes, but in either party side chamfered section 100 is set, and also obtains same effect certainly.
In the present embodiment, just on the distortion rake of the pole shoe 8a that aforementioned embodiments 1 relates to C point position describe in detail.This C point is preferably in the position that T shape bar 41 tops of stator core 4 radially overlap, and Fig. 5 is the pole shoe 8a leakage field magnetic flux figure of rotor 6.Such as shown, there are the leakage flux φ that leaks into pole shoe 9a from pole shoe 8a through T shape bar 41 in pole shoe 8a and radial overlap place, T shape bar 41 top.This be since the top of pole shoe 8a and T shape bar 41 with the cause of minim gap subtend radially., in the present embodiment, be to make T shape bar 41 tops be overlapped on pole shoe 8a chamfered section 100, therefore, the pole shoe 8a of overlap joint part and the radial distance of T shape bar 41 can make leakage flux reduce owing to chamfered section 100 becomes greatly.
In more detail, in Fig. 3, this amount of lap C preferably, in the distance L of the intersection point of the end face of stator core 4 and T shape bar 41 side end faces and pole shoe 8a distortion rake below 2.Fig. 6 is the behavioral illustrations figure of distance C for the generator output current.In the drawings, the longitudinal axis is represented generator output current (A), and transverse axis is represented distance C.Such as shown, clear and definite pole shoe 8a and T shape bar 41 be overlapped on occasion below 0, leakage flux increases; When reaching more than the L2, magnetic flux reduces by area, and output current reduces.
Execution mode 3
Fig. 7 is the expanded view with the pole shoe 8a amplification of the rotor 6 of the vehicle-mounted dlternator of embodiment of the present invention 3.In the present embodiment, such as shown, distance is designated as S between 2 B on the taper start line of the basic shoulder of two chamfered section 100 that pole shoe 8a forms, and should be to form roughly below half of pole shoe 8a peripheral width H apart from S then.
Fig. 8 is the graph of a relation apart from S and electromagnetic noise.In the drawings, the longitudinal axis represent the generator electromagnetic noise sound level (sound pressure level) (dB).Transverse axis is represented apart from S.Such as shown, clearly apart from S at pole shoe 8a peripheral width H roughly below half, then electromagnetic noise is little, below the 78dB, but it is roughly over half to reach pole shoe 8a peripheral width H apart from S, then chamfered section 100 diminishes, electromagnetic noise deteriorates into 82dB from 78dB.This be because, be controlled at pole shoe 8a peripheral width H roughly below half apart from S, then chamfered section 100 is big in the circumferential change of pole shoe 8a, the outer peripheral face of pole shoe 8a becomes smooth.Thereby the magnetic flux that flows into stator core 4 from pole shoe 8a replaces smoothly, and phase voltage waveform can reduce electromagnetic noise near beautiful sine wave.
Fig. 9 is the expanded view with the pole shoe 8a amplification of the rotor 6 of the vehicle-mounted dlternator of embodiment of the present invention 4.Figure 10 (a) is the expansion profile that the part of in the past vehicle-mounted dlternator is amplified, and Figure 10 (b) is the expansion profile that the alternating current generator part of embodiments of the present invention 4 is amplified.Present embodiment makes the tapered portion starting point of basic shoulder of pole shoe 8a roughly consistent with the end face of stator core 4 as shown in Figure 9.
Shown in Figure 10 (a), in vehicle-mounted dlternator in the past, the end face of stator core 4 is positioned near all sides in the tapered portion starting point of the basic shoulder of pole shoe 8a, but because the stator winding 5 that has an irregular surface and pole shoe 8a base shoulder is undue approaching, pressure oscillation takes place when passing through this position in the cooling air that fan 11 produces, and forms noise., like that, as make in the tapered portion starting point of pole shoe 8a base shoulder radially roughly consistently with the end face of stator core 4 shown in Figure 10 (b), then stator winding 5 disposes away from the basic shoulder of pole shoe 8a, can suppress the pressure oscillation of cooling air, thereby can suppress noise.
Execution mode 5
Again, the another side of chamfered section 100 and adjacency engages preferably R shape of bight.Like this, pole shoe 8a outer surface becomes smooth, can suppress the wind noise by the cooling air at this junction surface.
2 of the preferably every extremely every phases of the groove number of stator core, so-called 2 of every extremely every phases are wide the attenuating owing to the T shape bar 41 of stator core 4, and the unwanted amount of lap of minimizing and pole shoe 8a can reduce the leakage flux of leaking by T shape bar 41.
And, in stator core 4, adjacent the wide of T shape bar 41 preferably has nothing in common with each other, promptly, as make wide the having nothing in common with each other of adjacent T shape bar 41, and stator winding 5 is made unequal-interval, can make the end winding of rotor 6 and stator 3, or and stator core 4 inner peripheral surfaces between the wind noise of the equal number of times composition of the groove number that takes place disperse, thereby can reduce the wind noise.
At least one rotor back side is provided with ring-type fan 11 in the first rotor 8 and second rotor core 9 unshakable in one's determination, and its external diameter is the littlest like the first rotor 8 or second rotor 9.This as shown in Figure 11, cooling air produces axial flow (arrow), it is smooth to flow, and obtains the effect that can suppress the wind noise.External diameter as fan 11 is littler than the external diameter of rotor 8,9, can obtain the effect of requirement, and such as shown, in the starting point of the shoulder slope of rotor core 8 end faces and be that then effect becomes remarkable with the state of one side above the fan 11.
Figure 12 is the stator oblique view of the vehicle-mounted dlternator of embodiment of the present invention 8.Among the figure, the 31st, cover the end plate of the end winding of stator winding 5.Because this end plate 31, the end winding surface flattens, and obtains the effect of the wind noise that can suppress the cooling air by this place.In addition, figure end plates 31 is covered end winding inner peripheral surface and upper surface.And to cover inner peripheral surface, the then effect that can obtain requiring at least.
Execution mode 9
Figure 13 is the stator oblique view of the vehicle-mounted dlternator of embodiment of the present invention 9.Preferably will there be the rotor core 8,9 and the illustrated stator 3 of chamfered section 100 of the present invention to be used in combination.Such as shown, from stator core 4 end faces to the extended stator winding 5 of foreign side in circumferential location, configuration forms end winding, therefore, cooling air is by rectification, and, obtain suppressing the effect of wind noise.
The effect of invention
As aforementioned, aspect 1 described invention comprises: the stator with stator winding according to the present invention Unshakable in one's determination; Be arranged on this stator core inboard, be fixed on the unshakable in one's determination and second rotor iron of the first rotor in the rotating shaft The heart; This first rotor iron core and second rotor core are carried out magnetized magnetizing coil; From the first rotating shaft iron The heart and the second rotating shaft iron core are located at rotating shaft axially and by the intermeshing configuration of specified gap, simultaneously, are established Be set at many pole shoes of frame bore face by the specified gap subtend, unshakable in one's determination and the at the first rotor In at least one party's the pole shoe, have by following 3 chamfered section that joint face forms: shape in two rotor cores On Cheng Zaiji shoulder at least one party's circumferential end faces, the taper start line by the outer peripheral face that is formed at basic shoulder A bit and on the distortion rake of pole shoe a bit and at basic shoulder end face and the stator iron of pole shoe When the distance of heart end face is made as L1, be positioned at the utmost point apart from the distance of stator core end face L1/4～7 * L1/8 On the boots circumferential end faces any thus, can suppress the wind noise, improves rotor magnetic circuit, obtains high power Vehicle-mounted dlternator,
If adopt aspect of the present invention 2 described inventions, because the first rotor is unshakable in one's determination and the utmost point of second rotor core Boots have chamfered section, therefore can suppress the wind noise, and improve rotor magnetic circuit, obtain high-power vehicle Effect with alternating current generator.
If adopt aspect of the present invention 3 described inventions, chamfered section has basic shoulder both sides circumferential end faces, so have Can suppress the wind noise, improve rotor magnetic circuit, obtain high-power vehicle-mounted dlternator.
If adopt aspect of the present invention 4 described inventions, it is fixed a bit radially to coincide with on the distortion rake of pole shoe The point on the T shape bar top that son is unshakable in one's determination, therefore, the radial distance of pole shoe and T shape bar top ends enlarges, because of And be reduced the effect of leakage magnetic flux.
If adopt aspect of the present invention 5 described inventions, stator core end face and pole shoe twist on the rake a bit Distance is controlled at the distortion rake intersection point of stator core end face and stator core T shape bar top and pole shoe Distance L below 2, so that the amount of lap of pole shoe and T shape bar top ends is suitable, obtain reducing leakage field Logical effect.
If adopt aspect of the present invention 6 described inventions, in two chamferings of pole shoe base shoulder circumferential end faces formation 2 distances are roughly below half of pole shoe peripheral width on the basic shoulder taper start line of section, the magnetic pole change Smoothly, obtain to suppress the effect of electromagnetic noise.
If adopt aspect of the present invention 7 described inventions, the groove number of stator core is 2 of every extremely every phases, makes T The wide stenosis of shape bar reduces the amount of lap unnecessary with pole shoe, reduces leakage magnetic flux, obtains carrying high-power Effect.
If adopt aspect of the present invention 8 described inventions, chamfered section is by Surface forming, and cold-forging die does not have the bight, and is anti-End stress and concentrate the effect that obtains to prolong the cold-forging die life-span.
If adopt aspect of the present invention 9 described inventions, chamfered section be connected the face of adjacency and connect with R shape, The pole shoe outer surface becomes smooth, obtains suppressing the effect of wind noise.
If adopt aspect of the present invention 10 described inventions, make starting point and stator in the taper of pole shoe base shoulder End face of iron core is roughly consistent, and stator winding disposes just away from pole shoe, can suppress the pressure oscillation at this position, The effect of wind noise is inhibited.
If adopt aspect of the present invention 11 described inventions, in stator core, adjacent T shape bar is wide respectively not Identical, the number of times that noise takes place is disperseed, obtain suppressing the effect of wind noise.
If adopt aspect of the present invention 12 described inventions, in unshakable in one's determination and second rotor core of the first rotor at least One side's end face has ring-type fan, and this fan external diameter is more unshakable in one's determination or second rotor core is little than the first rotor, This position produces the axial flow of cooling air, and the effect of chamfered section is improved, and obtains suppressing the wind noise Effect.
If adopt aspect of the present invention 13 described inventions, stator winding has end face from stator core to extension To the end turn of foreign side, and at least end plate of inner peripheral surface of this end turn, this end turn are covered in setting The surface flattens, and obtains suppressing the effect of wind noise.
If adopt aspect of the present invention 14 described inventions, stator winding has outside the stator core end face extends to The end turn of side, this end turn makes the circumferential bond-allocating of stator winding, makes cold at end turn But wind is rectified, and obtains suppressing the effect of wind noise.
Claims (14)
1. vehicle-mounted dlternator, described vehicle-mounted dlternator comprises: the stator core with stator winding; Be arranged on this frame bore side and be fixed on unshakable in one's determination and second rotor core of the first rotor in the rotating shaft; This first rotor iron core and second rotor core are carried out magnetized magnetizing coil; Outstanding from the first rotor iron core and second rotor core to rotor shaft direction, across the staggered engagement configuration of predetermined gap, simultaneously across many 1st and 2nd pole shoe of predetermined gap in the face of the aperture surface setting of stator core, it is characterized in that, in the 1st and the 2nd pole shoe, at least one side's the pole shoe, have: a bit (B) on the taper start line that forms on the outer peripheral face of basic shoulder by connecting the chamfered section that following face forms at 3, a bit (C) on the distortion rake of pole shoe, and the end face that is positioned at the axial distance stator core when will the distance from pole shoe base portion side end face to the stator core end face being made as L1 is a bit (A) on the circumferential end faces of L1/4～7 * L1/8.
2. vehicle-mounted dlternator as claimed in claim 1 is characterized in that, chamfered section forms on the 1st and the 2nd pole shoe.
3. vehicle-mounted dlternator as claimed in claim 1 or 2 is characterized in that, chamfered section forms in the both sides of basic shoulder circumferential end faces.
4. vehicle-mounted dlternator as claimed in claim 1 or 2 is characterized in that, a bit radially overlapping with the T shape bar top of stator core on the distortion rake of pole shoe.
5. vehicle-mounted dlternator as claimed in claim 1 or 2, it is characterized in that, on stator core end face and the pole shoe curved incline face a bit distance, be controlled at below the distance till the intersection point the distortion rake of T shape bar from described stator core end face to described stator and described pole shoe.
6. vehicle-mounted dlternator as claimed in claim 1 or 2 is characterized in that, is below half of circumferential width of described pole shoe in the distance between 2 on the taper start line of the basic shoulder of two chamfered section that the circumferential end faces of pole shoe base shoulder forms.
7. vehicle-mounted dlternator as claimed in claim 1 or 2 is characterized in that, the groove number of stator core is every extremely every phase 2 grooves.
8. vehicle-mounted dlternator as claimed in claim 1 or 2 is characterized in that chamfered section is to form with curved surface.
9. vehicle-mounted dlternator as claimed in claim 1 or 2 is characterized in that, chamfered section is connected with R shape with the face of adjacency with it.
10. vehicle-mounted dlternator as claimed in claim 1 or 2 is characterized in that, makes the taper starting point on the basic shoulder of pole shoe consistent with the described end face axial of stator core.
11. vehicle-mounted dlternator as claimed in claim 1 or 2 is characterized in that, in stator core, and wide the having nothing in common with each other of adjacent T shape bar.
12. vehicle-mounted dlternator as claimed in claim 1 or 2 is characterized in that, at least one side's end face has ring-type fan in unshakable in one's determination and second rotor core of the first rotor, and the fan external diameter is more unshakable in one's determination or second rotor core is little than the first rotor.
13. vehicle-mounted dlternator as claimed in claim 1 or 2 is characterized in that, stator winding has the end winding that extends to foreign side from the stator core end face, and the end plate of the inner peripheral surface at least that covers this end winding is set.
14. vehicle-mounted dlternator as claimed in claim 1 or 2 is characterized in that, stator winding has the end winding that extends in foreign side from the stator core end face, and this end winding makes stator winding circumferentially locate configuration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021440166A CN100384057C (en) | 2002-09-27 | 2002-09-27 | AC generator for vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021440166A CN100384057C (en) | 2002-09-27 | 2002-09-27 | AC generator for vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1485965A CN1485965A (en) | 2004-03-31 |
| CN100384057C true CN100384057C (en) | 2008-04-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021440166A Expired - Lifetime CN100384057C (en) | 2002-09-27 | 2002-09-27 | AC generator for vehicle |
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| CN (1) | CN100384057C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4794650B2 (en) * | 2009-04-27 | 2011-10-19 | 三菱電機株式会社 | Rotating electric machine |
| CN107370262B (en) * | 2012-02-15 | 2019-08-06 | 株式会社电装 | Rotor and motor |
| FR3044483B1 (en) * | 2015-12-01 | 2018-11-23 | Valeo Equipements Electriques Moteur | ELECTRIC ROTOR ROTOR WITH ROTATING ELECTRICAL MACHINE WITH CURVED SHAFT GRIFFLES |
| CN106300724A (en) * | 2016-08-30 | 2017-01-04 | 芜湖杰诺瑞汽车电器系统有限公司 | A kind of automobile generator claw pole structure |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4201930A (en) * | 1977-07-15 | 1980-05-06 | Nippon Soken, Inc. | AC Generator having a clawtooth rotor with irregular trapizoidal teeth |
| US4972114A (en) * | 1987-02-11 | 1990-11-20 | Robert Bosch Gmbh | Alternating-current generator with claw pole rotor |
-
2002
- 2002-09-27 CN CNB021440166A patent/CN100384057C/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4201930A (en) * | 1977-07-15 | 1980-05-06 | Nippon Soken, Inc. | AC Generator having a clawtooth rotor with irregular trapizoidal teeth |
| US4972114A (en) * | 1987-02-11 | 1990-11-20 | Robert Bosch Gmbh | Alternating-current generator with claw pole rotor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1485965A (en) | 2004-03-31 |
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Granted publication date: 20080423 |