WO2013080258A1 - 車両用回転電機 - Google Patents
車両用回転電機 Download PDFInfo
- Publication number
- WO2013080258A1 WO2013080258A1 PCT/JP2011/006711 JP2011006711W WO2013080258A1 WO 2013080258 A1 WO2013080258 A1 WO 2013080258A1 JP 2011006711 W JP2011006711 W JP 2011006711W WO 2013080258 A1 WO2013080258 A1 WO 2013080258A1
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- WO
- WIPO (PCT)
- Prior art keywords
- protective cover
- hole
- electrical machine
- rotating electrical
- protruding portion
- Prior art date
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
- H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
- H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/04—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for rectification
- H02K11/049—Rectifiers associated with stationary parts, e.g. stator cores
- H02K11/05—Rectifiers associated with casings, enclosures or brackets
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
- H02K5/225—Terminal boxes or connection arrangements
Definitions
- the present invention relates to a rotating electrical machine for a vehicle such as an alternating current generator for a vehicle, and more particularly to a holding structure for electrical wiring wired around a rotating electrical machine for a vehicle mounted on a vehicle.
- the rectifier and the like are fixed to the outside of the rear frame, and a resin rear cover is attached to the rear frame so as to cover the rectifier and the like.
- the harness clamp which fixes electric wiring is attached and fixed to the protrusion part protruded integrally from the rear cover (for example, patent document 1).
- the rear cover is generally used to protect components such as the rectifier from being exposed to water and foreign matters, the front cover and the rear that support the rotor and the vehicle AC generator are supported. Unlike the side frame, it is manufactured with a thickness that allows elastic deformation without requiring high rigidity.
- the present invention has been made to solve the above-described problems, and by increasing the holding strength of the harness clamp and suppressing the vibration of the electric wiring caused by the vibration of the vehicle, the damage of the protective cover and
- An object of the present invention is to obtain a vehicular rotating electrical machine capable of suppressing the occurrence of disconnection of electrical wiring.
- a vehicular rotating electrical machine includes a rotor rotatably supported in a casing, a stator core, and a stator winding wound around the stator core, and the casing surrounds the rotor. And a rectifier that has a positive-side heat sink on which a positive-side rectifying element is mounted and that is disposed outside the casing in one axial direction to rectify AC power generated in the stator windings.
- the bottomed cylinder is composed of a bottom with a through hole and a cylindrical peripheral wall, and has a protrusion protruding in the opening direction from the peripheral edge of the through hole, and is attached to the casing so as to cover the rectifier
- a protective cover made of resin inserted into the through hole, fixed to one side in the axial direction of the casing, and having a mounting bolt for fixing the rectifier to the casing, and a protruding portion protruding to the protective cover side, Mounting bolt and positive side heat
- An insulating member that electrically insulates the sink, a mounting bracket that is fixed to an extension from the through hole of the mounting bolt, and a resin harness clamp that fixes the electrical wiring, the harness clamp being a mounting bracket And the protruding portion and the protruding portion are arranged so as to overlap each other in the axial direction of the mounting bolt.
- the mounting bolt is inserted into the through hole formed in the bottom portion of the protective cover, the rectifier is fixed to a portion on one side in the axial direction of the casing, and the mounting bracket extends from the through hole of the mounting bolt. It is fixed to the part. And since the harness clamp is held by the mounting bracket, it is possible to increase the holding strength of the harness clamp, so that the vibration of the electrical wiring fixed to the harness clamp due to the vibration of the vehicle is suppressed, The occurrence of damage to the protective cover and disconnection of the electrical wiring can be suppressed.
- the protruding portion protruding from the peripheral edge of the through hole of the protective cover and the protruding portion of the insulating member are disposed at a position overlapping in the axial direction of the mounting bolt, water intrusion into the protective cover, dust, etc. Can be prevented.
- FIG. 3 is a cross-sectional view of the vehicular AC generator as viewed in the direction of arrows AA in FIG. 2. It is principal part sectional drawing which shows the state before mounting bracket attachment in the alternating current generator for vehicles which concerns on Embodiment 1 of this invention. It is principal part sectional drawing which shows the fixed state of the electrical wiring in the alternating current generator for vehicles which concerns on Embodiment 1 of this invention. It is a figure explaining the structure of the attachment metal fitting which concerns on Embodiment 1 of this invention. It is a principal part expanded sectional view of the alternating current generator for vehicles in FIG.
- FIG. 1 is a cross-sectional view showing the entire vehicle alternator according to Embodiment 1 of the present invention
- FIG. 2 is a plan view of the vehicle alternator in FIG. 1 viewed from the protective cover side
- FIG. FIG. 4 is a cross-sectional view of the vehicle alternator taken along the line AA of FIG. 4;
- FIG. It is principal part sectional drawing which shows the fixed state of the electrical wiring in the alternating current generator for vehicles which concerns on Embodiment 1 of this invention.
- 6A and 6B are diagrams for explaining the configuration of the mounting bracket according to the first embodiment of the present invention.
- FIG. 6A is a top view and FIG. 6B is a side view.
- FIG. 7 is an enlarged sectional view of a main part of the vehicle alternator in FIG.
- symbol shows the same part.
- a vehicular AC generator 1 includes a casing 4 composed of a substantially bowl-shaped aluminum front bracket 2 and a rear bracket 3, and a casing 4 that is rotatable via a pair of bearings 5.
- a stator 9 fixed to the casing 4 so as to surround the child 8
- a pair of slip rings 10 fixed to an extension portion of the shaft 6 extending to the rear side of the casing 4 and supplying current to the rotor 8;
- a pair of brushes 11 that slide on the surface of each slip ring 10, a brush holder 12 that houses these brushes 11, and heat that is disposed on the outer diameter side of the brush holder 12
- a voltage regulator 14 that adjusts the magnitude of the AC voltage generated in the stator 9, and a voltage regulator 14 that is disposed on the rear side of the rear bracket 3 and
- a plurality of intake holes 2 a and 3 a are formed at the bottoms of the substantially bowl shape of the front bracket 2 and the rear bracket 3, and a plurality of exhaust holes 2 b and 3 b are formed at both outer peripheral shoulders of the front bracket 2 and the rear bracket 3.
- the rotor 8 is a Landel-type rotor, and is provided with a field winding 20 that generates a magnetic flux when an excitation current is passed, and a field that forms a magnetic pole by the magnetic flux. And an iron core 21.
- a front side cooling fan 8a made of a centrifugal fan is fixed to the front side end face of the field iron core 21, and similarly, a rear side cooling fan 8b made of a centrifugal fan is fixed to the rear side end face of the field core 21. It is fixed.
- a shaft 6 is inserted through the shaft 6 at the axial center of the field iron core 21, and a pair of slip rings 10 are provided at the rear end of the shaft 6 protruding from the rear bracket 3.
- a field winding 20 is electrically connected to 10.
- the stator 9 is wound around the cylindrical stator core 22 and the stator core 22, and an alternating current is generated by a change in magnetic flux from the field winding 20 as the rotor 8 rotates. 23.
- the stator 9 is disposed so as to surround the rotor 8 with the stator core 22 sandwiched between the opening ends of the front bracket 2 and the rear bracket 3 from both sides in the axial direction.
- the rectifier 16 includes a positive-side heat sink 25 on which a plurality of positive-side rectifying elements 24 are mounted, a negative-side heat sink 26 on which a plurality of negative-side rectifying elements (not shown) are mounted, and a circuit board 27.
- the circuit board 27 is sandwiched between the positive-side heat sink 25 and the negative-side heat sink 26 so as to be substantially C-shaped.
- the circuit board 27 is a resin molded body 27a obtained by molding an insulating resin such as polybutylene terephthalate (PBT) into a substantially C shape, and is insert-molded into the resin molded body 27a.
- PBT polybutylene terephthalate
- the rectifier 16 and the stator winding 23 are connected to each other. And a plurality of conductors 27b to be electrically connected.
- the conductor 27b is connected so that the positive-side rectifying element 24 and the negative-side rectifying element constitute a predetermined bridge circuit via the circuit board 27.
- the stud bolt 28 as a mounting bolt is a bolt having a first shaft portion 28a and a second shaft portion 28b in which screw portions are formed, and a nut portion 29 is formed at an intermediate portion between the shaft portions 28a and 28b.
- the nut portion 29 can be formed by increasing the diameters of both shaft portions 28a and 28b, in addition to the case where the nuts are fixedly formed.
- the rectifier 16 configured as described above has a positive-side heat sink 25 and a negative-side heat sink 26 stacked with a circuit board 27 interposed therebetween, and the first shaft portion 28 a of the stud bolt 28 is connected to the positive side.
- the heat sink 25, the circuit board 27, and the negative electrode side heat sink 26 are inserted and fastened to the outer end surface of the rear bracket 3.
- the stud bolt 28 and the negative-side heat sink 26 are electrically insulated by a circuit board 27, and the stud resin 28 and the positive-side heat sink 25 are interposed with a mold resin 30 as an insulating member. Is electrically insulated.
- the mold resin 30 has a cylindrical shape having an insertion hole 30a through which the first shaft portion 28a of the stud bolt 28 is inserted. After the first shaft portion 28a is inserted, the nut portion 29 of the stud bolt 28 is inserted into the mold resin. Tightening of the stud bolt 28 is completed by coming into contact with 30.
- the outer periphery of the mold resin 30 is provided with a protruding portion 30b protruding toward the protective cover 17 side.
- the rectifier 16 fixed to the rear bracket 3 by the stud bolt 28 is arranged in a fan shape around the shaft 6 on a plane orthogonal to the axis of the shaft 6 on the outer peripheral side of the slip ring 10.
- the lead wire 23a of the stator winding 23 is drawn from the rear bracket 3 and connected to the conductor 27b of the circuit board 27, and the rectifier 16 and the stator winding 23 are electrically connected.
- the brush holder 12 is disposed between both ends of the rectifier 16 in the substantially C-shaped circumferential direction, and is fastened and fixed to the outer end surface of the rear bracket 3.
- the voltage regulator 14 in which the noise preventing capacitor 31 and the connector 15 are integrally mounted is disposed outside the brush holder 12 in the radial direction, and is fastened and fixed to the outer end surface of the rear bracket 3.
- the protective cover 17 is molded into a bottomed cylindrical shape including a bottom portion 32 and a peripheral wall portion 33 using an insulating resin such as PBT or nylon 66, and the bottom portion 33 has a plurality of intake holes along a concentric circle. 34 is formed, and the intake hole 34 is opposed to the heat sink 13 of the voltage regulator 14 and the positive heat sink 25 of the rectifier 16. As shown in FIG. 3, a drain hole 35 is formed on the bottom 32 side of the peripheral wall portion 33, and a through hole 36 through which the second shaft portion 28 b of the stud bolt 28 passes is close to the drain hole 35.
- the bottom portion 32 is formed.
- the drain hole 35 is formed at a position facing the ground direction of the peripheral wall 33, that is, vertically downward when the vehicle alternator 1 is mounted on the vehicle. Furthermore, a protrusion 37 is provided on the opening side of the through hole 36 toward the rear bracket 3. In the present embodiment, the projecting portion 37 is provided with a tapered portion 37a on the outer peripheral side so as to be tapered toward the tip.
- the protective cover 17 configured as described above is attached to the rear bracket 3 so as to cover the rectifier 16, the brush holder 12, and the voltage regulator 14 with the opening side facing the rear bracket 3. At this time, the nut portion 29 and the second shaft portion 28 b of the stud bolt 28 extend from the through hole 36.
- the protrusions 37 provided in the through holes 36 are disposed on the outer peripheral side of the nut portion 29 and on the inner peripheral side of the protruding portion 30 b of the mold resin 30.
- the protruding portion 37 and the protruding portion 30b of the mold resin 30 are disposed through a gap at a position where the protruding portion 30 and the protruding portion 30b of the molding resin 30 partially overlap with each other in the axial direction of the stud bolt 28.
- a labyrinth structure that suppresses flooding is formed.
- the mounting bracket 19 is manufactured by press-molding a metal flat plate such as stainless steel, for example.
- a stud bolt insertion hole 41 is formed in the attachment portion 38, and a harness clamp holding hole 42 is formed in the holding portion 39.
- the mounting bracket 19 is mounted by inserting the second shaft portion 28b extending from the through hole 36 of the protective cover 17 into the stud bolt insertion hole 41, and is screwed into the second shaft portion 28b.
- the attachment portion 38 is sandwiched between the nut 43 and the nut portion 29 so as to cover the through hole 36 of the protective cover 17 by the fastening force of the attached nut 43 and is fixed to the stud bolt 28. At this time, the anti-rotation portion 40 is fitted into the drain hole 35 of the protective cover 17, and the mounting bracket 19 is prevented from being rotated when the nut 43 is fastened.
- the harness clamp 18 is a resin molded body using an insulating resin such as PBT or nylon 66, and is formed at one end of the holding portion 18a and the holding portion 18a holding the electric wiring 44 as shown in FIG. And a pair of snap fit claws 18c extending from the seat 18b.
- the pair of snap fit claws 18 c are inserted into the harness clamp holding holes 42 of the holding portion 39 to be snap-fit coupled. .
- the seat portion 18 b is seated on the outer peripheral surface of the holding portion 39
- the tip projection of the snap fit claw 18 c is seated on the inner peripheral surface of the holding portion 39
- the harness clamp 18 is held by the holding portion 39.
- the vehicular AC generator 1 configured as described above generates a magnetic flux by supplying a field current from a battery (not shown) to the field winding 20 via the brush 11 and the slip ring 10.
- the claw-shaped magnetic poles of the field iron core 21 are magnetized alternately to the N pole and the S pole in the circumferential direction.
- the rotational torque of the engine is transmitted to the shaft 6 via a belt (not shown) and the pulley 7, and the rotor 8 is rotated. Therefore, a rotating magnetic field is applied to the stator winding 23 of the stator 9, and an electromotive force is generated in the stator winding 23.
- the AC electromotive force generated in the stator winding 23 is rectified to DC by the rectifier 16, and the magnitude of the output voltage is adjusted by the voltage regulator 14 to be supplied to the battery or the on-vehicle electric load. Is done.
- the front side cooling fan 8 a and the rear side cooling fan 8 b rotate in conjunction with the rotation of the rotor 8.
- air is sucked into the front bracket 2 from the intake hole 2a, flows in the axial direction, reaches the rotor 8, and is bent in the centrifugal direction by the front side cooling fan 8a.
- the air bent in the centrifugal direction cools the coil end of the stator winding 23 and is discharged to the outside of the front bracket 2 through the exhaust hole 2b.
- air is sucked into the protective cover 17 from the intake hole 34, cools the rectifier 16, the voltage regulator 14, and the like and flows to the rear bracket 3 side.
- the air is sucked into the rear bracket 3 from the intake hole 3a, flows in the axial direction, reaches the rotor 8, and is bent in the centrifugal direction by the rear side cooling fan 8b.
- the air bent in the centrifugal direction cools the coil end of the stator winding 23 and is discharged to the outside of the rear bracket 3 through the exhaust hole 3b.
- the mounting bracket 19 is fastened and fixed to the stud bolt 28 that fastens and fixes the rectifier 16 to the rear bracket 3, and the harness clamp 18 is held by the mounting bracket 19. Therefore, the holding member of the harness clamp 18 can be made of a metal material, and the holding strength of the harness clamp 18 is higher than that of a conventional technique in which the harness clamp 18 is held by a protruding portion that integrally protrudes from a protective cover made of resin. Can be significantly larger. Thereby, the vibration of the electric wiring 44 resulting from the vibration of the vehicle or the like is suppressed, and damage to the protective cover 17 and occurrence of disconnection of the electric wiring 44 can be suppressed.
- the mounting portion 38 of the mounting bracket 19 is sandwiched between the nut 43 and the nut portion 29 so as to cover the through hole 36 of the protective cover 17 and is fixed to the stud bolt 28. Intrusion of water and dust into the protective cover 17 is suppressed, and the reliability and durability of the vehicle alternator can be improved.
- the protrusion 37 provided on the peripheral edge of the protective cover 17 on the opening side of the through hole 36 and the protrusion 30b of the mold resin 30 are disposed at a position overlapping the axial direction of the stud bolt 28. Since the labyrinth structure can be formed, infiltration of water, dust and the like from the through hole 36 into the protective cover 17 is suppressed, and the reliability and durability of the AC generator for vehicles can be improved. Furthermore, the leakage current between the rectifier 16 and the rear bracket 3 and the rusting of the rear bracket 3 which are generated by water immersion in the protective cover 17 can be suppressed.
- the harness clamp 18 can be held on the rear bracket 3 regardless of the shape of the protective cover 18, and the design freedom of the protective cover 17 is increased. By increasing, it is possible to improve the vehicle mountability of the vehicle AC generator.
- the mold resin 30 can be fixed when the stud bolt 28 is fastened to the rear bracket 3. Therefore, a fixing means for the mold resin 30 is separately provided. There is no need to provide it.
- the lead wire 23 a of the stator winding and the circuit board 27 for electrically connecting the rectifier 16 and the stator winding 23 when a dissimilar metal joint exists in the protective cover 17, for example, the lead wire 23 a of the stator winding and the circuit board 27 for electrically connecting the rectifier 16 and the stator winding 23.
- the conductor 27b is joined with a dissimilar metal, there is a risk of electrolytic corrosion at those locations, but in the present embodiment, intrusion of water or dust into the protective cover 17 is suppressed. Therefore, since electric corrosion at these dissimilar metal joints can be suppressed, the reliability and durability of the vehicle alternator can be improved.
- air is sucked into the protective cover 17 from the intake hole 34 by the rear cooling fan 8b of the rotor 8, and the rectifier 16 and the like are cooled and flow to the rear bracket 3 side.
- air is also sucked into the protective cover 17 from the gap between the through hole 36 of the protective cover 17 and the stud bolt 28, and this point is the cooling of the positive-side heat sink 25 of the rectifier 16 as shown in FIG. 3. It is not the main flow path for air.
- a drain hole 35 is formed on the bottom 32 side of the peripheral wall 33 of the protective cover 17 so as to be positioned vertically below the protective cover 17. Therefore, even if the inside of the protective cover 17 is submerged by a large amount of water, it can be reliably drained to the outside, so that the reliability and durability of the vehicle alternator can be improved.
- the protective cover 17 in the present embodiment has a simple structure in which the through hole 36 and the protrusion 37 are provided with respect to the conventional protective cover, and the molding die for the protective cover 17 is not changed. As a result, cost increases can be minimized.
- the protrusion 37 of the protective cover 17 is provided with a tapered portion 37a on the outer peripheral side so as to be tapered toward the tip.
- the tapered portion 37 a is provided. Since the inner peripheral portion of the protruding portion 30b and the tapered portion 37a first come into contact with each other and can serve as a guide when the protective cover 17 is attached, the attachment of the protective cover 17 can be improved.
- tapered portions may be provided on both the outer peripheral side and the inner peripheral side of the protruding portion 37.
- the protruding portion 37 is prevented from becoming thin. As a result, the moldability of the protrusion 37 is not deteriorated.
- the protrusion 37 does not have to be provided on the entire circumference of the through hole 36, and may be at least a part, for example, only a portion facing vertically above the vehicle alternator 1.
- the projection part 37 and the protrusion part 30b are arrange
- the attachment of the protective cover 17 is deteriorated while the intrusion of water or dust can be more effectively suppressed.
- the protrusion 37 provided in the through hole 36 of the protective cover 17 is configured to be disposed on the outer peripheral side of the nut portion 29 and on the inner peripheral side of the protruding portion 30b of the mold resin 30, but the present invention is not limited thereto. Instead, it may be arranged on the outer peripheral side of the protrusion 30b.
- the vehicular AC generator has been described.
- the present invention is not limited to this, and the same effect can be obtained when applied to a vehicular rotating electrical machine such as a vehicular motor or a vehicular generator motor.
- the peripheral wall portion 33 of the protective cover 17 is formed in a cylindrical shape, but is not limited thereto, and surrounds the rectifier 16 attached to the outer end surface of the rear bracket 3. Any cylindrical shape may be used.
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Abstract
Description
そして、電気配線を固定するハーネスクランプは、リヤカバーから一体に突出された突出部に取り付けられて固定されている(例えば、特許文献1)。
そのため、ハーネスクランプが脱落する際にはリヤカバーが損傷したり、あるいはハーネスクランプが脱落した結果、振動により電気配線が断線してしまう恐れがある。
さらに、保護カバーの貫通穴の周縁部から突出した突起部と絶縁部材の突出部とが、取付ボルトの軸方向に重なる位置に配設されていることで、保護カバー内への浸水や塵埃等の侵入を抑制できる。
図1は本発明の実施の形態1に係る車両用交流発電機の全体を示す断面図、図2は図1における車両用交流発電機を保護カバー側から見た平面図、図3は図2のA-A矢視における車両用交流発電機の断面図、図4は本発明の実施の形態1に係る車両用交流発電機における取付金具装着前の状態を示す要部断面図、図5は本発明の実施の形態1に係る車両用交流発電機における電気配線の固定状態を示す要部断面図である。図6は本発明の実施の形態1に係る取付金具の構成を説明する図であり、図6の(a)は上面図、図6の(b)は側面図である。図7は図5における車両用交流発電機の要部拡大断面図である。なお、各図中、同一符号は同一部分を示す。
また、界磁鉄心21の軸心位置にはシャフト6に貫装されており、シャフト6のリヤブラケット3から突出した後端部には、一対のスリップリング10が設けられており、このスリップリング10には界磁巻線20が電気的に接続されている。
サーキットボード27は、ポリブチレンテレフタレート(PBT)などの絶縁性樹脂を略C字状に成形した樹脂成型体27aと、この樹脂成型体27aにインサート成形され、整流器16と固定子巻線23とを電気的に接続する複数本の導体27bと、を備えている。導体27bは、正極側整流素子24と負極側整流素子とがサーキットボード27を介して所定のブリッジ回路を構成するように接続される。
この時、スタッドボルト28と負極側ヒートシンク26の間は、サーキットボード27により電気的に絶縁されており、スタッドボルト28と正極側ヒートシンク25の間は、絶縁部材であるモールド樹脂30を介在させて、電気的に絶縁している。
また、図3に示されるように、周壁部33の底部32側には水抜き穴35が形成され、スタッドボルト28の第2軸部28bを通す貫通穴36が、この水抜き穴35に近接して底部32に形成されている。なお、水抜き穴35は、車両用交流発電機1の車両搭載時には、周壁部33の地方向、すなわち鉛直下方を向く位置に形成されている。
さらには、貫通穴36の開口側の周縁部には、リヤブラケット3側に向けて突起部37が設けられている。本実施の形態では、突起部37は先端に向かって先細り形状となるように、外周側にテーパー部37aが設けられている。
また、保護カバー17がリヤブラケット3に取り付けられると、貫通穴36に設けられた突起部37は、ナット部29の外周側かつモールド樹脂30の突出部30bの内周側に配設されるようになっており、突起部37とモールド樹脂30の突出部30bとは、スタッドボルト28の軸方向に一部重なるような位置で、空隙を介して配設されることにより、貫通穴37からの浸水等を抑制するラビリンス構造を形成している。
そして、取付金具19は、図3に示されるように、保護カバー17の貫通穴36から延出する第2軸部28bをスタッドボルト挿通穴41に入れて装着され、第2軸部28bに螺着したナット43の締着力により取付部38が、保護カバー17の貫通穴36を覆うように、ナット43とナット部29との間に挟持されてスタッドボルト28に固定される。このとき、回り止め部40が保護カバー17の水抜き穴35に嵌め込まれ、ナット43による締着時における取付金具19の供回りが阻止される。
そして、ハーネスクランプ18を取付金具19に取り付けるには、電気配線44を保持部18aに固定した後、一対のスナップフィット爪18cを保持部39のハーネスクランプ保持用穴42に差し込んでスナップフィット結合させる。これにより、座部18bが保持部39の外周面に着座し、スナップフィット爪18cの先端突起部が保持部39の内周面に着座して、ハーネスクランプ18が保持部39に保持される。
一方リヤ側では、空気が吸気穴34から保護カバー17内に吸入され、整流器16、電圧調整器14などを冷却してリヤブラケット3側に流れる。そして、吸気孔3aからリヤブラケット3内に吸入され、軸方向に流れて回転子8に到達し、リヤ側冷却ファン8bにより遠心方向に曲げられる。遠心方向に曲げられた空気は、固定子巻線23のコイルエンドを冷却して、排気孔3bからリヤブラケット3の外部に排出される。
ここで、保護カバー17の貫通穴36とスタッドボルト28の隙間からも、空気は保護カバー17内に吸入されるが、この箇所は図3に示すように、整流器16の正極側ヒートシンク25の冷却を行う空気の主要流路ではない。
そのため、貫通穴36とスタッドボルト28の隙間に、突起部37と突出部30bとでラビリンス構造を形成することで、ここから吸入される空気の流れを阻害することができ、その結果として吸気穴34から保護カバー17内に吸入する空気の量を増やすことができるので、整流器16の冷却効率を上げることができ、車両用交流発電機の信頼性および耐久性を向上させることができる。
また、突起部37の外周側ではなく内周側にテーパー部(図示しない)を設ける場合は、保護カバー17をリヤブラケット3に近づける際に、ナット部29の外周部とテーパー部がまず接触し、ガイドの役割を担うことができる。
加えて、上記実施の形態では、突起部37と突出部30bの間にラビリンス構造が形成されるように、突起部37と突出部30bは空隙を介して配設されているが、これに限られず、突起部37を突出部30bに当接して圧入する構造の場合は、保護カバー17の取り付け性が悪化する一方で、浸水や塵埃等の侵入をより効果的に抑制することができる。
8 回転子
8b リヤ側冷却ファン
9 固定子
16 整流器
17 保護カバー
18 ハーネスクランプ
19 取付金具
22 固定子鉄心
23 固定子巻線
23a 口出し線
24 正極側整流素子
25 正極側ヒートシンク
27b 導体
28 スタッドボルト(取付ボルト)
30 モールド樹脂(絶縁部材)
30a 挿通穴
30b 突出部
32 底部
33 周壁部
34 吸気穴
35 水抜き穴
36 貫通穴
37 突起部
37a テーパー部
44 電気配線
Claims (8)
- ケーシング内に回転可能に支持された回転子と、
固定子鉄心、および前記固定子鉄心に巻装された固定子巻線を有し、前記回転子を囲むように前記ケーシングに支持された固定子と、
正極側整流素子が実装された正極側ヒートシンクを有し、前記ケーシングの軸方向一側の外側に配設されて前記固定子巻線に発生する交流電力を整流する整流器と、
貫通穴が形成された底部と筒状の周壁部とからなる有底筒状であり、前記貫通穴の周縁部から開口方向に突出した突起部を有して、前記整流器を覆うように前記ケーシングに装着される樹脂製の保護カバーと、
前記貫通穴に挿通されるとともに、前記ケーシングの軸方向一側に固着されて、前記整流器を前記ケーシングに固定する取付ボルトと、
前記保護カバー側に突出した突出部を有し、前記取付ボルトと前記正極側ヒートシンクとを電気的に絶縁する絶縁部材と、
前記取付ボルトの前記貫通穴からの延出部に固着された取付金具と、
電気配線を固定する樹脂製のハーネスクランプと、を備え、
前記ハーネスクランプが前記取付金具に保持されるとともに、前記突出部と前記突起部とが、前記取付ボルトの軸方向に重なる位置に配設されていることを特徴とする車両用回転電機。 - 前記突出部と前記突起部とが空隙を介して配設されていることを特徴とする請求項1に記載の車両用回転電機。
- 前記突出部と前記突起部とが当接して配設されていることを特徴とする請求項1に記載の車両用回転電機。
- 前記絶縁部材は、前記取付ボルトを挿通させる挿通穴を備えていることを特徴とする請求項1から3のいずれかに記載の車両用回転電機。
- 前記保護カバー内部において、異種金属材料の接合部が設けられていることを特徴とする請求項1から4のいずれかに記載の車両用回転電機。
- 前記回転子は冷却ファンをさらに備え、
前記保護カバーの前記底部における前記整流器に対向する位置には、前記冷却ファンによって前記保護カバー内部の空気を冷却する吸気穴が設けられていることを特徴とする請求項1から5のいずれかに記載の車両用回転電機。 - 前記保護カバーの前記周壁部には水抜き穴が形成されていることを特徴とする請求項1から6のいずれかに記載の車両用回転電機。
- 前記突起部には、先端側に向かって先細り形状となるようにテーパー部が設けられていることを特徴とする請求項1から7のいずれかに記載の車両用回転電機。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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US14/237,068 US9343942B2 (en) | 2011-11-30 | 2011-11-30 | Rotating electrical machine for vehicle |
PCT/JP2011/006711 WO2013080258A1 (ja) | 2011-11-30 | 2011-11-30 | 車両用回転電機 |
CN201180074675.5A CN103918168B (zh) | 2011-11-30 | 2011-11-30 | 车用旋转电机 |
EP11876605.4A EP2787608B1 (en) | 2011-11-30 | 2011-11-30 | Rotating electrical machine for vehicle |
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PCT/JP2011/006711 WO2013080258A1 (ja) | 2011-11-30 | 2011-11-30 | 車両用回転電機 |
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WO2013080258A1 true WO2013080258A1 (ja) | 2013-06-06 |
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PCT/JP2011/006711 WO2013080258A1 (ja) | 2011-11-30 | 2011-11-30 | 車両用回転電機 |
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US (1) | US9343942B2 (ja) |
EP (1) | EP2787608B1 (ja) |
CN (1) | CN103918168B (ja) |
WO (1) | WO2013080258A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2020171179A (ja) * | 2019-04-05 | 2020-10-15 | 株式会社デンソー | 回転電機 |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
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US9525317B2 (en) * | 2011-11-11 | 2016-12-20 | Mitsubishi Electric Corporation | Automotive rotary electric machine |
US9627948B2 (en) * | 2014-04-11 | 2017-04-18 | Remy Technologies Llc | Electric machine with combined insulator and terminal assembly |
FR3068185B1 (fr) * | 2017-06-26 | 2019-12-13 | Valeo Equipements Electriques Moteur | Assemblage mecanique avec isolation electrique entre une machine electrique tournante et sa partie electronique |
CN115912738B (zh) * | 2022-11-16 | 2023-07-21 | 佛山市顺德区卓高电机制造有限公司 | 一种罩极电机 |
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2011
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- 2011-11-30 US US14/237,068 patent/US9343942B2/en not_active Expired - Fee Related
- 2011-11-30 WO PCT/JP2011/006711 patent/WO2013080258A1/ja active Application Filing
- 2011-11-30 CN CN201180074675.5A patent/CN103918168B/zh active Active
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Also Published As
Publication number | Publication date |
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US9343942B2 (en) | 2016-05-17 |
EP2787608A4 (en) | 2015-11-25 |
CN103918168B (zh) | 2016-08-17 |
EP2787608A1 (en) | 2014-10-08 |
EP2787608B1 (en) | 2016-11-30 |
US20140203672A1 (en) | 2014-07-24 |
CN103918168A (zh) | 2014-07-09 |
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