CN1303740C - Rotary dynamo - Google Patents
Rotary dynamo Download PDFInfo
- Publication number
- CN1303740C CN1303740C CNB2004100071003A CN200410007100A CN1303740C CN 1303740 C CN1303740 C CN 1303740C CN B2004100071003 A CNB2004100071003 A CN B2004100071003A CN 200410007100 A CN200410007100 A CN 200410007100A CN 1303740 C CN1303740 C CN 1303740C
- Authority
- CN
- China
- Prior art keywords
- pole core
- rotating shaft
- magnet exciting
- hub portion
- magnetic pole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 230000004907 flux Effects 0.000 claims description 17
- 230000002093 peripheral effect Effects 0.000 claims description 8
- 230000005284 excitation Effects 0.000 abstract 1
- 230000017525 heat dissipation Effects 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 229910052742 iron Inorganic materials 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
Images
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- Synchronous Machinery (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The present invention relates to a rotating motor. Gaps are formed on at least one side of a first pole core (31) and a second pole core (32) and in the bottom (31c) between the root parts of an adjacent pole tooth part (31a) to a bottom gap part (90) adjacent to a wheel hub part (31b). The present invention can reduce the weight of the pole cores and enhance the heat dissipation of excitation coils.
Description
Technical field
The present invention relates to have the electric rotating machine of rotor, this rotor has a pair of pole core of being arranged to cover magnet exciting coil, forming magnetic pole by the magnetic flux that is taken place by magnet exciting coil.
Background technology
Fig. 6 is the expression conduct sectional view of the vehicle-mounted dlternator of electric rotating machine in the past.
This vehicle-mounted dlternator has: the housing that is made of the front rack 12 and the tail-bracket 13 of aluminum; Be arranged on the central axis of this housing and and be fixed on an end and be rotated the rotating shaft 8 that is bearing in freely on the 1st bearing 15 and the 2nd bearing 16 belt pulley 17; Be fixed on the Landon (Japanese: the rotor 4 of type ラ Application De Le) on this rotating shaft 8; Be fixed on the stator 1 on the internal face of housing; The slip ring 9 of rotor 4 supplying electric currents on the other end that is fixed on rotating shaft 8; The a pair of brush 21 that slips with slip ring 9; Accommodate the brush holder 20 of this brush 21; Be electrically connected with stator 1, also will become the rectifier 18 of direct current by the AC rectification that stator 1 produces; Be fixed on the brush holder 20, generator voltage is detected and controls exciting current and terminal voltage is adjusted to the voltage adjuster 19 of setting; The protective cover 22 that is installed on the tail-bracket 13, respectively rectifier 18 and voltage adjuster 19 is covered; Be fixed on the 1st fan 10 and the 2nd fan 11 on the both ends of the surface of axis direction of rotor 4.
Rotor 4 comprises: have at the both ends of tube cylindraceous portion to the resinous coil rack 100 of the flange that radially extends; With Wire-wound on this coil rack 100 and flow through electric current and the magnet exciting coil 7 of magnetic flux takes place; Cover this magnet exciting coil 7, utilize the magnetic flux that in magnet exciting coil 7, takes place and form a pair of the 1st pole core 5 and the 2nd pole core 6 of magnetic pole.
The 1st pole core 5 made of iron has shown in Fig. 7 (a): be fixed on the hub portion 5b cylindraceous on the rotating shaft 8; From the end of this hub portion 5b to the convex rib 5d that radially extends; And from the peripheral end of this convex rib 5d the 5a of magnetic pole tooth portion to the prominent claw-like of establishing of axis direction of rotating shaft 8.The 5a of magnetic pole tooth portion forms a plurality of with isogonism class interval at circumferencial direction, be formed with 6 in this example.
The 2nd pole core 6 made of iron has shown in Fig. 7 (b): be fixed on the hub portion 6b cylindraceous on the rotating shaft 8; From the end of this hub portion 6b to the convex rib 6d that radially extends; And the magnetic pole tooth portion 6a of the dash forward claw-like established relative from the 5a of the magnetic pole tooth portion engagement ground of the peripheral end of this convex rib 6d and the 1st pole core 5.The 6a of magnetic pole tooth portion forms a plurality of with isogonism class interval at circumferencial direction, be formed with 6 in this example.
In the vehicle-mounted dlternator in the past that constitutes like this, electric current supplies to magnet exciting coil 7 from battery (not shown) by brush 21 and slip ring 9, and produces magnetic flux.Utilize this magnetic flux, the 5a of magnetic pole tooth portion of the 1st pole core 5 is magnetized into the N utmost point, with the 6a of the magnetic pole tooth portion magnetization S utmost point of the 2nd pole core 6.Its result as shown in Figure 8, produces magnetic circuit because of magnetic flux Φ between the 5a of magnetic pole tooth portion, 6a and stator core 2.
On the other hand, the turning moment of engine is transmitted to rotating shaft 8 by belt and belt pulley 17, makes the rotor rotation, gives rotating magnetic field to stator coil 3, produces electromotive force in stator coil 3.The electromotive force of this interchange is rectified into direct current by rectifier 18, and utilizes voltage adjuster 19 that its size is adjusted, and battery is charged.
Again, utilization is fixed on the rotation of the 1st fan the 10, the 2nd fan 11 on the both ends of the surface of axis direction of rotor 4, in Fig. 6, as shown by arrows in tail-bracket 13 sides, outer gas is inhaled into by suction hole 22a and rectifier 18, voltage adjuster 19 is cooled off, and by behind the suction hole 13a, agley the coil-end of stator coil 3 is cooled off to centrifugal direction by the 2nd fan 11,13b discharges to the outside from steam vent.
Again, in Fig. 6, as shown by arrows in front rack 12 sides, after outer gas was inhaled into by suction hole 12a, because of the 1st fan 10 cools off the coil-end of stator coil 3 agley to centrifugal direction, 12b discharged to the outside from steam vent.
In the vehicle-mounted dlternator of said structure, from flowing as can be known of the magnetic flux Φ shown in Fig. 7 (a), Fig. 7 (b), among the bottom 6c between the root of the bottom 5c between the root of the 5a of magnetic pole tooth portion of adjacency, the 6a of magnetic pole tooth portion of adjacency, part at its end is not passed through magnetic flux Φ, do not play effect in this part, exist to have useless wall portion and make weight surpass required above problem as the original function of pole core 5,6.
Again, owing to the area of the coil rack 70 that exposes from bottom 5c, 6c is little, so also correspondingly there is the problem of the poor radiation of magnet exciting coil 7
Summary of the invention
The present invention makes in order to address the above problem, and its purpose is that acquisition can alleviate the weight of pole core and improve the electric rotating machine of the thermal diffusivity of magnet exciting coil.
In alternating current generator of the present invention, at least one side of the 1st pole core and the 2nd pole core of rotor, the bottom between the root of the magnetic pole tooth portion of adjacency is formed with near the paddy notch part of breach hub portion.And on flange, be formed with the flange notch part that magnet exciting coil is exposed from described bottom.
In the present invention, acquisition can reduce the weight of pole core and improve the electric rotating machine of magnet exciting coil thermal diffusivity.
Description of drawings
Fig. 1 is the sectional view of the first half of the rotor in the expression example 1 of the present invention.
Fig. 2 is the figure when arrow A is seen the rotor of Fig. 1.
Fig. 3 is the front view of the first half of the rotor in the expression example 2 of the present invention.
Fig. 4 is the front view of the first half of the rotor in the example 3 of the present invention.
Fig. 5 is the front view of the pole core of the rotor in the expression example 4 of the present invention.
Fig. 6 is the sectional view of vehicle-mounted dlternator in the past.
Fig. 7 (a) is the figure when in the past bracket side is seen the 1st pole core of Fig. 6, and Fig. 7 (b) is the figure when bracket side is seen the 2nd pole core of Fig. 6 in the past.
Fig. 8 is the key diagram of the magnetic circuit between the magnetic pole tooth portion of the stator core of presentation graphs 6 and pole core.
Embodiment
Below, the vehicle-mounted dlternator of each example of the present invention is described, and to in the past identical or suitable member, position, put on same-sign and omit its explanation.
Example 1
In the vehicle-mounted dlternator of this example 1, with comparing of conventional art shown in Figure 6, the structure difference of rotor 30, other structure are identical.
Fig. 1 is the one-sided sectional view of this rotor 30, and Fig. 2 is the figure when arrow A is seen the rotor 30 of Fig. 1.
This rotor 30 comprises: have the cylindric and both ends resinous coil rack 70 to the flange that radially extends; Wire-wound constituted on this coil rack 70 and flow through electric current and the magnet exciting coil 7 of magnetic flux takes place; And cover this magnet exciting coil 7, utilize the magnetic flux that in magnet exciting coil 7, takes place and form a pair of the 1st pole core 31 and the 2nd pole core 32 of magnetic pole.
The 1st pole core 31 made of iron has as shown in Figure 2: be fixed on the hub portion 31b cylindraceous on the rotating shaft 8; From the end of this hub portion 31b to the convex rib 31d that radially extends; From the peripheral end of this convex rib 31d the 31a of magnetic pole tooth portion to the prominent claw-like of establishing of axis direction of rotating shaft 8.The 31a of magnetic pole tooth portion forms a plurality of with isogonism class interval at circumferencial direction, be formed with 8 in this example.
On the bottom 31c between the root of the 31a of magnetic pole tooth portion of adjacency, be formed with breach up to the surperficial B of hub portion 31b, promptly with the paddy notch part 90 of the near surface of magnet exciting coil 7 butts.In the outer lateral side of hub portion 31b, be formed with the recess 31e of formed ring-type on every side around rotating shaft 8 again.
The 2nd pole core 32 made of iron has: be fixed on the hub portion 32b cylindraceous on the rotating shaft 8; From the end of this hub portion 32b to the convex rib 32d that radially extends; And the magnetic pole tooth portion 32a of the dash forward claw-like established relative from each 31a of magnetic pole tooth portion engagement ground of the peripheral end of this convex rib 32d and the 1st pole core 31.The 32a of magnetic pole tooth portion forms a plurality of with isogonism class interval at circumferencial direction, be formed with 8 in this example.
On the bottom 32c between the root of the 32a of magnetic pole tooth portion of adjacency, also be formed with near the paddy notch part 90 of breach up to the surperficial B of hub portion 32b.In the outer lateral side of hub portion 32b, also be formed with the recess 32e of formed ring-type on every side around rotating shaft 8 again.
On a side's of coil rack 70 flange, among the bottom 31c between the root of the 31a of magnetic pole tooth portion of adjacency, be formed with the flange notch part 80 that the part of the side that makes magnet exciting coil 7 is exposed.Edge portion at this flange notch part 80 is formed with flange part 70a.This flange part 70a, outstanding and pole core 31 cards are ended at the axis direction V of rotor 30 font.
On the opposing party's of coil rack 70 flange, among the bottom 32c between the root of the 32a of magnetic pole tooth portion of adjacency, also be formed with the flange notch part 80 that the part of the side that makes magnet exciting coil 7 is exposed, also be formed with flange part 70a in the edge portion of this notch part.This flange part 70a, outstanding and pole core 32 cards are ended at the axis direction V of rotor 30 font.
In the vehicle-mounted dlternator of said structure, at each bottom 31c, the 32c between the 31a of magnetic pole tooth portion of adjacency and between the 32a of magnetic pole tooth portion of adjacency, owing to be formed with near the paddy notch part 90 of breach, so can alleviate the weight of rotor 30 up to hub portion 31b, 32b.This occasion makes the position of breach, from Fig. 7 (a), Fig. 7 (b) of illustrating previously as can be known, is the position by magnetic flux not, and the card by this paddy notch part 90 ends, and the magnetic resistance of pole core 31,32 is increased.
Again, in the outer lateral side of hub portion 31b, 32b, owing to being formed with around recess 31e, the 32e of the ring-type that forms on every side of rotating shaft 8, so can further alleviate the weight of rotor 30.This recess 31e, 32e also are not by the position of original magnetic flux, by the formation of this recess 31e, 32e, the magnetic resistance of pole core 31,32 are increased.
At two flanges of coil rack 70,,, can improve the thermal diffusivity of magnet exciting coil 7 so can increase the area of dissipation of the magnet exciting coil 7 that contacts with outer gas owing to be formed with the flange notch part 80 that the part of the side that makes magnet exciting coil 7 is exposed again.
Again, owing to be formed with flange part 70a in the edge portion of this flange notch part 80, so can prevent relatively moving of coil rack 70 relative pole cores 31,32.
Example 2
Fig. 3 is the front view that is illustrated in upside half one of the rotor 30 in the example 2 of the present invention.
In this example, at two flanges of coil rack 70, be formed with the 70b of window portion that magnet exciting coil 7 is exposed from each bottom 31c, 32c, this point is different with example 1.
Also same with example 1 in this occasion, the area of dissipation of the magnet exciting coil 7 that contacts with outer gas increases, and can improve the thermal diffusivity of magnet exciting coil 7.
Example 3
Fig. 4 is the front view that is illustrated in upside half one of the rotor 30 in the example 3 of the present invention.
In this example, bottom surface at each bottom 31c, 32c between the root of the 31a of magnetic pole tooth portion of adjacency and between the root of the 32a of magnetic pole tooth portion of adjacency, be positioned at the surperficial B of hub portion 31b, promptly with the same one side of the face of magnet exciting coil 7 butts on, compare with example 1,2, the area that magnet exciting coil 7 contacts with outer gas increases, the weight of rotor 30 can be further alleviated, and the thermal diffusivity of magnet exciting coil 7 can be improved.
Example 4
Fig. 5 is the front view of upside half one of the pole core 31 of the rotor of expression in the example 4 of the present invention.
In this example, be that magnetic pole is the rotor of 12 utmost points, the bottom 31c between the root of the 31a of magnetic pole tooth portion of adjacency is formed with near the paddy notch part 90 of the breach surperficial B of hub portion 31b, so can obtain the effect same with example 1.
Again, in above-mentioned each example, the vehicle-mounted dlternator as electric rotating machine is described, and the present invention also can be applied to motor, be also used as the alternative electric generation motor of alternating current generator and motor.
Again, also can be formed with end notch part, be formed with the flange notch part accordingly with this paddy notch part either party of the 1st pole core and the 2nd pole core.
Claims (4)
1, a kind of electric rotating machine has:
Rotating shaft;
Be fixed on the rotor on this rotating shaft; And
The stator that surrounds this rotor and be provided with,
Described rotor comprises: have at the both ends of tube cylindraceous portion to the coil rack of the flange that radially extends; Wire-wound constituted on this coil rack and flow through electric current and the magnet exciting coil of magnetic flux takes place; And cover this magnet exciting coil, utilize the magnetic flux in magnet exciting coil, take place and form a pair of the 1st pole core and the 2nd pole core of magnetic pole,
Described the 1st pole core comprises the hub portion cylindraceous that is fixed on the described rotating shaft, from the end of this hub portion to the convex rib that radially extends, from the peripheral end of this convex rib magnetic pole tooth portion to the prominent a plurality of claw-likes established of axis direction of described rotating shaft,
Described the 2nd pole core comprises the hub portion cylindraceous that is fixed on the described rotating shaft, from the end of this hub portion to the convex rib that radially extends, and the magnetic pole tooth portion of the dash forward a plurality of claw-likes established relative from the described magnetic pole tooth of each of the peripheral end of this convex rib and the 1st pole core portion engagement ground, it is characterized in that
At least one side at described the 1st pole core and described the 2nd pole core, bottom between the root of the described magnetic pole tooth portion of adjacency, be formed with near the paddy notch part that is resected to the described hub portion,, be formed with the flange notch part that described magnet exciting coil is exposed from described bottom at described flange.
2, electric rotating machine as claimed in claim 1 is characterized in that, at the edge part of described flange, is formed with the flange part that ends with described bottom card.
3, a kind of electric rotating machine has:
Rotating shaft;
Be fixed on the rotor on this rotating shaft; And
The stator that surrounds this rotor and be provided with,
Described rotor comprises: have at the both ends of tube cylindraceous portion to the coil rack of the flange that radially extends; Wire-wound constituted on this coil rack and flow through electric current and the magnet exciting coil of magnetic flux takes place; And cover this magnet exciting coil, utilize the magnetic flux in magnet exciting coil, take place and form a pair of the 1st pole core and the 2nd pole core of magnetic pole,
Described the 1st pole core comprises the hub portion cylindraceous that is fixed on the described rotating shaft, from the end of this hub portion to the convex rib that radially extends, from the peripheral end of this convex rib magnetic pole tooth portion to the prominent a plurality of claw-likes established of axis direction of described rotating shaft,
Described the 2nd pole core comprises the hub portion cylindraceous that is fixed on the described rotating shaft, from the end of this hub portion to the convex rib that radially extends, and the magnetic pole tooth portion of the dash forward a plurality of claw-likes established relative from the described magnetic pole tooth of each of the peripheral end of this convex rib and the 1st pole core portion engagement ground, it is characterized in that
At least one side in described the 1st pole core and described the 2nd pole core, bottom between the root of the described magnetic pole tooth portion of adjacency, be formed with near the paddy notch part that is resected to the described hub portion,, be formed with the window portion that described magnet exciting coil is exposed from described bottom at described flange.
4, as each described electric rotating machine in the claim 1 to 3, it is characterized in that, on the outer lateral side of described hub portion, be formed with the recess of formed ring-type on every side around described rotating shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100071003A CN1303740C (en) | 2004-02-26 | 2004-02-26 | Rotary dynamo |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100071003A CN1303740C (en) | 2004-02-26 | 2004-02-26 | Rotary dynamo |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1661882A CN1661882A (en) | 2005-08-31 |
| CN1303740C true CN1303740C (en) | 2007-03-07 |
Family
ID=35011022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100071003A Expired - Fee Related CN1303740C (en) | 2004-02-26 | 2004-02-26 | Rotary dynamo |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1303740C (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0779697A1 (en) * | 1995-12-13 | 1997-06-18 | Magneti Marelli Manufacturing Spa | An alternator, particularly for motor vehicles |
| CN1208277A (en) * | 1997-05-26 | 1999-02-17 | 株式会社电装 | Alternator for vehicle |
| JP2003219592A (en) * | 2002-01-24 | 2003-07-31 | Visteon Global Technologies Inc | High-efficiency bobbin for alternator |
-
2004
- 2004-02-26 CN CNB2004100071003A patent/CN1303740C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0779697A1 (en) * | 1995-12-13 | 1997-06-18 | Magneti Marelli Manufacturing Spa | An alternator, particularly for motor vehicles |
| CN1208277A (en) * | 1997-05-26 | 1999-02-17 | 株式会社电装 | Alternator for vehicle |
| JP2003219592A (en) * | 2002-01-24 | 2003-07-31 | Visteon Global Technologies Inc | High-efficiency bobbin for alternator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1661882A (en) | 2005-08-31 |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070307 |
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| CF01 | Termination of patent right due to non-payment of annual fee |