JP5924142B2 - AC generator for vehicles - Google Patents

AC generator for vehicles Download PDF

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Publication number
JP5924142B2
JP5924142B2 JP2012131645A JP2012131645A JP5924142B2 JP 5924142 B2 JP5924142 B2 JP 5924142B2 JP 2012131645 A JP2012131645 A JP 2012131645A JP 2012131645 A JP2012131645 A JP 2012131645A JP 5924142 B2 JP5924142 B2 JP 5924142B2
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peripheral
rectifying
mounting hole
press
negative electrode
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JP2013039023A (en
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重信 中村
中村  重信
翔 長谷川
翔 長谷川
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株式会社デンソー
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Priority claimed from CN2012102326834A external-priority patent/CN102868259A/en
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Description

  The present invention relates to a vehicle AC generator mounted on a passenger car, a truck, or the like.

  2. Description of the Related Art Conventionally, a structure is known in which a mounting hole penetrating a radiating fin of a rectifying device is provided and a rectifying element whose outer peripheral surface is knurled is press-fitted into the mounting hole (see, for example, Patent Document 1). In addition, a structure in which the rectifying element has a higher hardness than the radiating fin is also known (see, for example, Patent Document 2). Furthermore, a structure is known in which the rectifying element is press-fitted into the frame instead of the heat dissipating fins (see, for example, Patent Document 3). Further, in the heat sink in which the heat conducting member is press-fitted into the hollow portion provided in the radiating fin, a surface layer having a surface hardness higher than the other surface hardness on one of the inner peripheral surface of the hollow portion and the outer peripheral surface of the heat conducting member A structure in which is formed is known (see, for example, Patent Document 4).

Japanese Patent Laid-Open No. 5-114678 (page 2-3, FIG. 1-7) JP 2002-119029 A (page 2-6, FIG. 1-9) Japanese Patent No. 3771737 (page 3-4, FIG. 1-6) Japanese Patent Laying-Open No. 2005-277191 (page 2-5, FIGS. 1-4)

  By the way, as for the radiating fin of the rectifying element, it is more advantageous than the press-formed product to use a die-cast product made of an aluminum material that can make a complicated shape with a large surface area in terms of cooling performance. However, as a feature when a die-cast product is used, the hardness of the cast surface of the surface is higher than that of the inside. Therefore, when the structure of Patent Document 1 is applied to the heat radiation fin of the die cast product, the cast surface of the mounting hole of the heat radiation fin becomes harder than the member of the pressure fitting portion of the rectifying element, and the outer peripheral surface of the pressure fitting portion of the rectifying element The knurled portion formed on the radiating fin does not bite into the mounting holes of the heat radiating fins, and the knurled portion is mainly deformed during press-fitting. In this way, since the knurled part does not bite into the inner peripheral surface of the mounting hole, the contact area between the rectifying element and the mounting hole of the radiating fin is reduced, and salt water and the like easily enter the entire contact part. There is a problem that the progress of the corrosion of the rectifying element is accelerated and the fixing force of the rectifying element is lowered, or the conductivity of the contact portion may be impaired at an early stage. In addition, when the contact area is reduced, the thermal resistance of the contact portion increases and the thermal conductivity from the rectifying element to the radiating fin decreases, so that the cooling performance of the rectifying element deteriorates and the life of the rectifying element is shortened. was there.

  In order to solve these problems, it may be possible to remove the cast surface of the mounting hole of the heat dissipating fin by cutting, but additional machining is required, which is not desirable from the viewpoint of cost reduction. . Further, Patent Document 2 in which the rectifying element has a higher hardness than the heat radiating fins only discloses press-formed heat radiating fins, and when a die-cast molded product is employed to improve heat radiating properties, the same as above. In addition, cutting is required, which increases costs. On the other hand, if an attempt is made to give the rectifying element a higher hardness than the cast surface of the die-cast product, the manufacturing cost of the rectifying element itself increases due to the material and difficulty of making it.

  Further, Patent Document 3 using a die cast molded frame instead of the heat radiating fin has the same problem.

  Patent Document 4 describes that the outer peripheral surface of the heat conducting member is subjected to a hardening process such as hard chrome plating so as to be harder than the inner peripheral surface of the hollow portion to be press-fitted. Since this is necessary, the manufacturing cost and parts cost increase. Patent Document 4 shows a configuration in which a radiating fin having a hollow portion is formed by a die casting method, and a plurality of grooves are provided in the hollow portion in the insertion direction of the heat conducting member. As shown in FIG. 4 of Patent Document 4, the shape of the groove is to increase the press-fit area and increase the heat transfer from the heat conducting member to the radiating fin. It is set much larger than the width of the groove. Moreover, as shown in FIG. 1 and FIG. 2 of Patent Document 4, the electronic element to be cooled is disposed on the end face away from the press-fitting portion of the heat conducting member. However, in a structure in which a rectifying element is press-fitted like a rectifier of an AC generator for a vehicle, such press-fitting adds excessive stress to the rectifying element and causes a reduction in the life of the rectifying element.

  The present invention was created in view of the above points, and the object thereof is to maintain a fixing force and conductivity with the rectifying element by securing a contact area, and to provide a rectifying element. The present invention is to provide an automotive alternator that can prevent a decrease in the service life at low cost.

In order to solve the above-described problems, an automotive alternator according to the present invention includes a plurality of rectifying elements and mounting fins into which the plurality of rectifying elements are press-fitted and radiating fins formed by die casting. The radiating fin is formed by die casting, and the inner peripheral surface of the mounting hole is a casting surface, and forms a plurality of grooves along the press-fitting direction of the rectifying element. It has an uneven portion in the circumferential direction, the convex portion has a circumferential width or apex that is narrower than the circumferential width of the concave portion, and the hardness of the inner peripheral surface of the mounting hole is that of the member of the outer peripheral portion of the rectifying element It is higher than the hardness.

  By forming the convex part on the inner peripheral surface side of the hard mounting hole and press-fitting the rectifying element, the convex part can be bitten into the outer peripheral part of the rectifying element, so the inner peripheral surface of the mounting hole and the outer periphery of the rectifying element The contact area between the parts can be increased, and the fixing force and conductivity between them can be maintained. In addition, since the convex portion has a circumferential width or apex that is narrower than the circumferential width of the concave portion, excessive stress on the rectifying element is prevented, and thermal conductivity increases as the contact area increases. In combination with improving the cooling performance of the rectifying element, it is possible to prevent the life of the rectifying element from being reduced. Furthermore, it becomes possible to reduce the cost by using the cast skin surface without processing the inner peripheral surface of the radiating fin.

It is sectional drawing which shows the whole structure of the alternating current generator for vehicles of 1st Embodiment. It is a top view which shows the detailed structure of a rectifier. It is a figure which shows the direction which drives a negative electrode side rectifier in the attachment hole of a negative electrode side radiation fin. It is sectional drawing of a negative electrode side rectifier. It is sectional drawing which shows the shape of the attachment hole of a negative electrode side radiation fin. It is the elements on larger scale of the attachment hole of a negative electrode side radiation fin. It is the elements on larger scale of the attachment hole of the modification of a negative electrode side radiation fin. It is a figure which shows the modification (2nd Embodiment) of the outer peripheral surface shape of a negative electrode side rectifier. It is a figure which shows the modification (2nd Embodiment) of the outer peripheral surface shape of a negative electrode side rectifier. It is a figure which shows the modification (3rd Embodiment) which sealed the fitting part of the negative electrode side rectifier and the negative electrode side radiation fin using the sealing agent. It is a figure which shows the modification (4th Embodiment) which formed the step part in the edge part of the outer peripheral part along the press injection direction of the positive electrode side rectifier. It is a figure which shows the modification (5th Embodiment) which formed the step part in the front side of the press injection direction in the edge part of the internal peripheral surface of the attachment hole along the press injection direction of a negative electrode side rectifier. It is a fragmentary sectional view of the alternator for vehicles which shows the modification (6th embodiment) using the frame as the negative electrode side radiation fin of the rectifier.

  Hereinafter, an AC generator for a vehicle according to an embodiment to which the present invention is applied will be described in detail with reference to the drawings. The vehicle alternator 1 shown in FIG. 1 includes a stator 2, a rotor 3, a brush device 4, a rectifier 5, a frame 6, a rear cover 7, a pulley 8, and the like.

  The stator 2 includes a stator core 21 and three-phase stator windings 23 wound around a plurality of slots formed in the stator core 21 at predetermined intervals. The rotor 3 has a structure in which a field winding 31 in which an insulated copper wire is wound in a cylindrical and concentric manner is sandwiched from both sides through a rotating shaft 33 by a pole core 32 having a plurality of magnetic pole claws. have. A cooling fan 34 is attached to the end face of the pole core 32 on the front side by welding or the like. Similarly, a cooling fan 35 is attached to the end face of the pole core 32 on the rear side by welding or the like.

  The brush device 4 is for passing an exciting current from the rectifying device 5 to the field winding 31 of the rotor 3, and presses each of the slip rings 36 and 37 formed on the rotating shaft 33 of the rotor 3. Brushes 41 and 42 are provided.

  The rectifier 5 is for rectifying a three-phase AC voltage, which is an output voltage of the three-phase stator winding 23, to obtain a DC output power, a terminal block 51 including wiring electrodes therein, Rectifying elements 54, 55 as a plurality of semiconductor devices attached by press-fitting into positive-side radiating fins 52 and negative-side radiating fins 53 arranged at predetermined intervals and press-fitting holes provided in the respective radiating fins. It is comprised including. The press-fit structure of the rectifying elements 54 and 55 will be described later.

  The frame 6 accommodates the stator 2 and the rotor 3, is supported in a state where the rotor 3 can rotate around the rotation shaft 33, and a predetermined amount is provided on the outer peripheral side of the pole core 32 of the rotor 3. A stator 2 arranged via a gap is fixed. The frame 6 is provided with a cooling air discharge window 61 at a portion facing the stator winding 23 protruding from the axial end surface of the stator core 21 and a cooling air suction window 62 at the axial end surface. Yes. The rear cover 7 covers the entire brush device 4, the rectifying device 5, and the IC regulator 12 that are attached to the outside of the rear frame 6, and protects them.

  In the vehicle alternator 1 having the above-described structure, the rotor 3 rotates in a predetermined direction when a rotational force from an engine (not shown) is transmitted to the pulley 8 via a belt or the like. In this state, by applying an excitation voltage from the outside to the field winding 31 of the rotor 3, each claw portion of the pole core 32 is excited, and a three-phase AC voltage can be generated in the stator winding 23. DC output power is taken out from the output terminal of the rectifier 5.

  Next, the details of the rectifier 5 will be described with reference to FIG. In the following, the negative electrode side rectifying element 55 press-fitted into the negative electrode side radiating fin 53 will be mainly described. However, the same applies to the positive electrode side radiating fin 52 and the positive electrode side rectifying element 54 press-fitted into the positive electrode side radiating element. Is omitted.

  The rectifier 5 includes a positive-side radiating fin 52 and a negative-side radiating fin 53. The negative-side radiating fins 53 are formed with attachment holes 56 penetrating at six locations, and the negative-side rectifying elements 55 are driven into the respective attachment holes 56. By attaching the negative-side rectifying element 55 to the negative-side radiating fin 53 by press-fitting, it is possible to reduce the work man-hours and costs compared to the case where the negative-side rectifying element 55 is attached by soldering. The negative-side radiating fins 53 are formed by die casting using an aluminum material (aluminum or aluminum alloy). Moreover, the attachment hole 56 formed in the negative electrode side radiation fin 53 has an inner peripheral surface that is a cast surface, and no additional processing is performed on the inner peripheral surface that is formed by die casting. An arrow A shown in FIG. 3 indicates a direction in which the negative rectifier 55 is driven into the attachment hole 56 of the negative radiating fin 53.

  The negative electrode side rectifying element 55 includes a disk unit 500, a semiconductor chip 510, and leads 520. The disk unit 500 has a cylindrical shape in which a recess 504 is formed on one end surface. The inner bottom surface of the recess 504 serves as a bonding surface 506 for soldering the semiconductor chip 510 as a rectifying element. The bottom surface side of the recess 504 (the lower surface side of the disk unit 500 in the example shown in FIG. 4) is a press-fitting surface at the time of driving, and the entire press-fitting surface is uniformly pressed.

  In the negative electrode side rectifying element 55, the semiconductor chip 510 is soldered on the joint surface 506 of the disk unit 500 by solder 512, and the lead 520 is soldered on the upper part of the semiconductor chip 510 by solder 514. A protective layer 522 made of silicon rubber or resin is formed so as to cover the entire semiconductor chip 510.

  By the way, the disk unit 500 has a cylindrical outer peripheral surface 502 having no irregularities. The disk unit 500 is formed of copper, aluminum, or the like, and the outer peripheral surface 502 is formed by, for example, lathe processing. On the other hand, the mounting hole 56 provided in the negative electrode side radiation fin 53 has a plurality of inner peripheral surfaces 560 in the inner peripheral surface 560 in a knurl shape, specifically, parallel to the driving direction of the negative electrode side rectifying element 55. The convex part is formed.

  As shown in FIGS. 5A and 5B, a plurality of convex portions 562 are formed on the inner peripheral surface 560 of the mounting hole 56, and the tip portion has a vertex. The circumferential width x of the convex portion 562 is smaller than the circumferential width y of the concave portion (non-convex portion). Further, the diameter of the tip portion of the convex portion 562 is set smaller than the outer diameter of the disc portion 500. In the example shown in FIGS. 5A and 5B, 24 convex portions 562 are illustrated, but the number and shape are shown as an example for explanation and may be changed as appropriate. For example, the protrusion 5620 in FIG. 5C has a flat portion at the tip. Also in this case, as in FIG. 5B, the circumferential width X of the convex portion 5620 is smaller than the circumferential width Y of the concave portion (non-convex portion), and the diameter of the tip portion of the convex portion 5620 is outside the disc portion 500. It is set smaller than the diameter.

  When the disc portion 500 of the negative electrode side rectifying element 55 is press-fitted into the mounting hole 56 in which the convex portion 562 is formed on the inner peripheral surface 560, the convex portion of the inner peripheral surface 560 of the mounting hole 56 is inserted into the outer peripheral portion of the disc portion 500. Since the front end portion of 562 interferes, the interfered portion is deformed. Actually, since the inner peripheral surface 560 of the mounting hole 56 is a die cast casting surface, the inner peripheral surface 560 including the convex portion 562 is harder than the outer peripheral surface 502 of the disk portion 500 of the negative electrode side rectifying element 56. The negative-side rectifying element 56 is press-fitted while the convex portion 562 bites into the outer peripheral surface 502 mainly.

  As described above, in the rectifying device 5 of the vehicle alternator 1 according to the present embodiment, the convex portion 562 is formed on the inner peripheral surface 560 side of the hard mounting hole 56, and the negative electrode side rectifying element is formed in the mounting hole 56. By press-fitting 55, the convex portion 562 can bite into the outer peripheral portion (the outer peripheral surface 502 of the disk portion 500) of the negative electrode side rectifying element 55, and therefore the inner peripheral surface 560 of the mounting hole 56 and the negative electrode side rectifying element 55. It is possible to increase the contact area between the outer peripheral portion and the fixing force or conductivity between them. Further, since the convex portion has a circumferential width narrower than the circumferential width of the concave portion, excessive stress on the rectifying element due to press-fitting is prevented, and the negative-side rectifying element 55 of the negative-side rectifying element 55 accompanying an increase in contact area is prevented. Combined with the improvement in cooling performance, it is possible to prevent the life of the rectifying element from being reduced. Furthermore, the cost can be reduced by using the inner peripheral surface of the negative-side radiation fin 53 as it is without processing the inner surface.

  Further, the negative-side radiating fins 53 are formed by die casting using an aluminum material, and by performing die casting using an aluminum material excellent in mass productivity, further cost reduction can be achieved. As described above, the same applies to the positive-side radiating fin 52 and the positive-side rectifying element 54 press-fitted into the positive-side radiating fin 52.

  In addition, this invention is not limited to the said embodiment, A various deformation | transformation implementation is possible within the range of the summary of this invention. For example, in the above-described embodiment, the outer peripheral surface 502 of the disk portion 500 of the negative electrode side rectifying element 55 has a cylindrical shape without unevenness. You may make it form a recessed part in the position corresponding to the several convex part 562 formed in the internal peripheral surface 560 of the attachment hole 56 of the side radiation fin 53. FIG. The same applies to the positive-side rectifying element 54.

  In the modification shown in FIG. 6, the outer peripheral surface 502 of the negative electrode side rectifying element 55 is located at a position corresponding to 24 convex portions 562 provided on the inner peripheral surface 560 of the attachment hole 56 of the negative electrode side radiating fin 53. Twenty-four concave portions 570 are formed. These concave portions 570 extend in a direction parallel to the driving direction of the negative electrode side rectifying element 55, similarly to the convex portions 562. Further, when the negative rectifying element 55 is press-fitted into the mounting hole 56, the convex portion 562 is formed to be larger in size than the concave portion 570 so that the convex portion 562 is surely engaged with the concave portion 570, and is harder. When the convex portion 562 is press-fitted, the concave portion 570 is deformed, and the space between these is surely fitted. By adding such a recess 570, the contact area can be further increased easily. In addition, since the negative electrode side rectifying element 55 can be easily positioned, the negative electrode side rectifying element 55 can be easily assembled, and the manufacturing cost can be reduced. Note that the number of the concave portions 570 is not necessarily matched with the number of the convex portions 562, and the number of the concave portions 570 may be reduced so as to correspond to some of the convex portions 562 as illustrated in FIG.

  Further, on the outer peripheral surface of the negative electrode side rectifying element 55 (the same applies to the positive electrode side rectifying element 54) shown in FIG. 3, and on the outer peripheral surface of the negative electrode side rectifying element 55 shown in FIG. 6 or 7 (region other than the recess 570). On the other hand, a satin finish may be applied to form a fine uneven shape. Thereby, it becomes possible to increase the contact area when the outer peripheral surface of the negative electrode side rectifying element 55 and the inner peripheral surface of the mounting hole 56 (regions other than the convex portion 562) are in surface contact. The same applies to the positive-side rectifying element 54.

  Further, in the above-described embodiment, a region exposed to the surface of the negative electrode side heat radiating fin 53 in a region where the outer peripheral surface 502 of the negative electrode side rectifying element 55 and the inner peripheral surface 560 of the mounting hole 56 are fitted is used as a sealant. You may make it seal by. The same applies to the positive-side rectifying element 54.

  In the modification shown in FIG. 8, the sealant 580 is added to both surfaces of the negative electrode side heat radiation fin 53, and the fitting portion between the negative electrode side rectifying element 55 and the negative electrode side heat radiation fin 53 is sealed over the entire circumference. Yes. Thereby, it can prevent reliably that foreign materials, such as salt water, permeate from these fitting parts, and can improve environmental resistance. As described above, the fixing force and conductivity between the outer peripheral portion of the rectifying element and the mounting hole can be reliably maintained. Note that this sealing may be performed only on the surface of the negative electrode side heat radiation fin 53 and on the foreign material intrusion side. In the case of the vehicle alternator 1 shown in FIG. 1, foreign matters such as salt water mainly enter from a cooling air suction window (not shown) provided in the rear cover 7. For this reason, you may make it add only the sealing agent 580 illustrated in the upper side in FIG.

  Further, instead of adding the sealing agent 580 (or with the addition of the sealing agent 580), the end of the outer peripheral portion (the outer peripheral surface 502) along the press-fitting direction of the negative electrode side rectifying element 55, or the mounting hole 56 You may make it give the effect similar to sealing by forming the step part extended in the radial direction in the edge part of the internal peripheral surface 560. FIG. The same applies to the positive-side rectifying element 54.

  In the modification shown in FIG. 9, a stepped portion (large diameter portion) 590 is formed at the end portion of the outer peripheral surface 502 of the positive electrode side rectifying element 54. The outer diameter of the stepped portion 590 is a region where the outer peripheral surface 502 of the positive electrode side rectifying element 54 and the inner peripheral surface 560 of the mounting hole 56 are fitted, and is the entire portion exposed on the surface of the positive electrode side radiating fin 52. Is set to cover the dimensions. Thereby, in the vehicle alternator 1 shown in FIG. 1, foreign matters such as salt water can be reliably prevented from entering from the direction of the stepped portion 590, and environmental resistance can be improved. Furthermore, since the stepped portion 590 is positioned in the press-fitting direction, there is an effect of cost reduction by facilitating manufacturing.

  In the modification shown in FIG. 10, a stepped portion (small diameter portion) 592 is formed at the end portion of the inner peripheral surface 560 of the negative electrode side radiating fin 53. The inner diameter of the stepped portion 592 is a region where the outer peripheral surface 502 of the negative electrode side rectifying element 55 and the inner peripheral surface 560 of the mounting hole 56 are fitted, and the entire portion exposed to the surface of the negative electrode side heat radiating fin 53. It is set to the dimension to cover. Thereby, it can prevent reliably that foreign materials, such as salt water, permeate from the direction of the step part 592, and can improve environmental resistance. Furthermore, since the stepped portion 592 is positioned in the press-fitting direction, there is an effect of cost reduction by facilitating manufacture.

  In the above-described embodiment, the negative-side radiation fins 53 are provided separately from the frame 6, but generally the frame 6 is also formed by die casting using an aluminum material (aluminum or aluminum alloy). You may make it use as the negative electrode side radiation fin 53. FIG.

  In the modification shown in FIG. 11, a mounting hole 56 is provided in an axial end surface (rear end surface) along the rotation shaft 33 of the frame 6, and the negative rectifier 55 is directly press-fitted into the mounting hole 56. Further, the frame 6 is formed by die casting using an aluminum material, and the inner peripheral surface of the mounting hole 56 is a cast surface, and a plurality of convex portions shown in FIG. 562 is formed. As described above, by using the frame 6 as the negative-side radiation fin 53 of the rectifying device 5, it is possible to reduce the cost by reducing the number of parts.

  As described above, according to the present invention, the convex portion 562 is formed on the inner peripheral surface 560 side of the hard mounting hole 56 and the rectifying elements 54 and 55 are press-fitted, so that the convex portion 562 is inserted into the rectifying elements 54 and 55. Since it can bite into the outer peripheral portion, the contact area between the inner peripheral surface 560 of the mounting hole 56 and the outer peripheral portion of the rectifying elements 54 and 55 is increased, and the fixing force and conductivity between them are maintained. Can do. Moreover, since the convex portion has a circumferential width or apex that is narrower than the circumferential width of the concave portion, excessive stress on the rectifying element is prevented, and cooling of the rectifying element accompanying an increase in the contact area is achieved. In combination with the improvement of the characteristics, it is possible to prevent the life of the rectifying elements 54 and 55 from being reduced. Furthermore, the cost can be reduced by using the inner peripheral surfaces of the radiating fins 53, 53 without processing the cast surface.

DESCRIPTION OF SYMBOLS 1 Vehicle AC generator 5 Rectifier 52 Positive electrode side radiation fin 53 Negative electrode side radiation fin 56 Mounting hole 502 Outer peripheral surface 560 Inner peripheral surface 562 Convex part 580 Sealant 590, 592 Stepped part

Claims (9)

  1. A rectifying device (5) having a plurality of rectifying elements (54, 55), a mounting hole (56) into which the plurality of rectifying elements are press-fitted, and heat radiating fins (52, 53) formed by die casting. A vehicle alternator (1) comprising:
    An inner peripheral surface (560) of the mounting hole is a cast surface, and a large-diameter concave portion and a small-diameter convex portion (562, 5620) so as to form a plurality of grooves along the press-fitting direction of the rectifying element. Alternately in the circumferential direction,
    The tip of the convex part has a circumferential width narrower than the circumferential width of the concave part, or a vertex,
    An AC generator for a vehicle, wherein the hardness of the inner peripheral surface of the mounting hole is higher than the hardness of a member of the outer peripheral portion of the rectifying element.
  2. In claim 1,
    On the outer peripheral surface (502) of the outer peripheral portion of the rectifying element, a concave portion (570) is formed at a position corresponding to at least a part of the plurality of convex portions formed on the inner peripheral surface of the mounting hole. A vehicle alternator characterized by
  3. In claim 1 or 2,
    An area where the outer peripheral portion of the rectifying element and the inner peripheral surface of the mounting hole are fitted, and a portion exposed to the surface of the radiation fin is sealed with a sealant (580). AC generator for vehicles.
  4. In claim 3,
    Automotive alternator which is characterized that you have sealed a site exposed on the surface of the radiation fins ingress side of the foreign matter by the sealant.
  5. In any one of Claims 1-4,
    An area where the outer peripheral portion of the rectifying element and the inner peripheral surface of the mounting hole are fitted, and a portion exposed to the surface of the radiating fin is an end of the outer peripheral portion along the press-fitting direction of the rectifying element or An AC generator for a vehicle, wherein an end portion of an inner peripheral surface of the mounting hole is covered with a stepped portion (590, 592) extending in a radial direction.
  6. In claim 5,
    The vehicular AC generator, wherein the stepped portion is a large-diameter portion (590) of the outer peripheral portion formed on the rear side in the press-fitting direction.
  7. In claim 5,
    The AC generator for vehicles, wherein the stepped portion is a small-diameter portion (592) of the inner peripheral surface formed on the front side in the press-fitting direction.
  8. In any one of Claims 1-7,
    The AC generator for vehicles, wherein the inner peripheral surface of the mounting hole and the members of the outer peripheral portion of the rectifying element are made of the same material.
  9. In any one of Claims 1-8,
    The radiating fins, alternator for a vehicle characterized that you have used an aluminum material.
JP2012131645A 2011-07-09 2012-06-11 AC generator for vehicles Active JP5924142B2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2011152397 2011-07-09
JP2011152397 2011-07-09
JP2012131645A JP5924142B2 (en) 2011-07-09 2012-06-11 AC generator for vehicles

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012131645A JP5924142B2 (en) 2011-07-09 2012-06-11 AC generator for vehicles
CN2012102326834A CN102868259A (en) 2011-07-09 2012-07-05 Alternator for vehicle

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JP2013039023A JP2013039023A (en) 2013-02-21
JP5924142B2 true JP5924142B2 (en) 2016-05-25

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JP6056555B2 (en) * 2013-03-05 2017-01-11 株式会社デンソー AC generator rectifier for vehicle

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JP2004195567A (en) * 2002-12-16 2004-07-15 Denso Corp Press-in material, press-in method of rectifying element and rectifier
JP3707476B2 (en) * 2003-03-18 2005-10-19 株式会社デンソー Vehicle alternator
JP4600366B2 (en) * 2006-08-29 2010-12-15 株式会社デンソー Vehicle alternator
JP4626665B2 (en) * 2007-08-31 2011-02-09 株式会社デンソー Rectifier

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