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41. 发明专利

JP2000092800A AC GENERATOR FOR VEHICLE 失效
公开(公告)号：JP2000092800A
公开(公告)日：2000-03-31
申请号：JP26123798
申请日：1998-09-16
申请人： DENSO CORP
发明人： NAKAMURA SHIGENOBU , SHIGA TSUTOMU
IPC分类号： H02K19/22 , H02K7/10 , H02K7/108
摘要： PROBLEM TO BE SOLVED: To provide an AC generator for a vehicle, which can reduce its calorific value and its cost, which can prevent its output voltage from becoming excessively high even when a field current does not flow, and which is provided with a magnet. SOLUTION: In an AC generator 1 for a vehicle, a stator 2, a rotor 3, a frame 4, a voltage regulator 7, a pulley 8 and a clutch 9 are provided. In the rotor 3, a permanent magnet 37 is interposed and placed between a claw part 36 and a claw part 36, and its magnetization is increased in a low-speed rotation region. The upper-limit speed of rotation of the rotor 3 is set at a prescribed value by the clutch 9. When the rotor 3 is turned at the upper-limit speed of rotation in a state that no current flows to a field winding 31 at the rotor 3, the permanent magnet 37 is selected in such a way that the output voltage of the AC generator 1 for the vehicle agrees nearly with a battery charging voltage.

42. 发明专利

JPH11285217A VEHICLE AC GENERATOR 失效
公开(公告)号：JPH11285217A
公开(公告)日：1999-10-15
申请号：JP4489999
申请日：1999-02-23
申请人： DENSO CORP
发明人： UMEDA ATSUSHI , SHIGA TSUTOMU , KUSASE ARATA
IPC分类号： H02K19/24
摘要： PROBLEM TO BE SOLVED: To provide a vehicle AC generator which can realize the size reduction, the output increase and the noise suppression simultaneously. SOLUTION: The stator of a vehicle AC generator has a plurality of conductor segments 33 attached to a stator core. The conductor segments 33 are arranged in each slot in two or more layers and in one row only. As a result, the space factor of electrical conductors in the slot can be large. Furthermore, as the conductor segments 33 outside the slots are placed in accordance with the arrangements in the slots, many gaps for cooling air flowing from the inside in the radial direction to the outside in the radial direction can be formed.

43. 发明专利

JPH11220851A ALTERNATOR FOR VEHICLE 失效
公开(公告)号：JPH11220851A
公开(公告)日：1999-08-10
申请号：JP21447498
申请日：1998-07-29
申请人： DENSO CORP
发明人： SHIGA TSUTOMU , UMEDA ATSUSHI , KUSASE ARATA
IPC分类号： F02B63/04 , H02K7/14 , H02K9/06
摘要： PROBLEM TO BE SOLVED: To provide an alternator for a vehicle, in which the noise of a fan is low, which achieves a small shape and a high output even under a high- temperature ambient environment and which is excellent in terms of costs. SOLUTION: The alternator 1 for a vehicle comprises a stator 2, a rotor 3 and frames 4, 5. A plurality of intake holes 41, 51 are formed in end parts in the axial direction at the frames 4, 5, and a plurality of exhaust holes 42, 52 are formed in the outer circumferential part. Base parts of cooling fans 11, 14 are brought into contact with both side faces of the magnetic pole core 7 of the rotor 3. The number of blades of the respective fans is smaller than the number of claws of the magnetic pole core 7 with which the fans are brought into contact. The blades have curved surfaces, and they are formed at equal pitches in the circumferential direction. No rib is formed at the blades and the base parts. The stator 2 is provided with a stator core 32 comprising a plurality of slots and with a plurality of conductor segments which are housed in the respective slots. Coil ends 31 which are connected to the conductor segments so as to constitute a winding are situated at side faces in the axial direction of the stator core 32. The respective conductor segments at the coil ends 31 are dispersed and separated mutually so as to have gaps.

44. 发明专利

JPH11187599A AC GENERATOR FOR VEHICLE 失效
公开(公告)号：JPH11187599A
公开(公告)日：1999-07-09
申请号：JP12688498
申请日：1998-04-20
申请人： DENSO CORP
发明人： UMEDA ATSUSHI , SHIGA TSUTOMU , KUSASE ARATA
IPC分类号： H02K3/12 , H02K3/04
摘要： PROBLEM TO BE SOLVED: To provide an AC generator for a vehicle without causing problems such as a temperature rise or the like with excellent cost performance, by preventing a stop of generation due to an electric short-circuit in a stator slot due to watering from an exterior. SOLUTION: A stator of an AC generator for a vehicle has electric conductors 3 for forming a stator core 32 and a stator coil, and insulators 34 for electrically insulating between the core and the conductors, and is supported by a frame. Many slots having openings 35 are formed on an inner peripheral side of the core 32. And, a magnetic flux collection protrusion 36 is formed at a tooth tip between the slots. An areal ratio of a sectional area 37 of the slot of the outer peripheral side from the protrusion 36 to a total area of the space gap 38 except the conductors 33 and the insulators 34 of substantially the same in sectional shapes in and out of the slots is set to become 25% or less.

45. 发明专利

JPH11164506A STATOR OF AC GENERATOR FOR VEHICLE 失效
公开(公告)号：JPH11164506A
公开(公告)日：1999-06-18
申请号：JP11417498
申请日：1998-04-08
申请人： DENSO CORP
发明人： UMEDA ATSUSHI , SHIGA TSUTOMU , KUSASE ARATA
IPC分类号： H02K3/50 , H02K9/06
摘要： PROBLEM TO BE SOLVED: To obtain a stator for facilitating a winding process using segments. SOLUTION: A stator winding is provided with a first coil end group 31a, which is formed on one of the axial direction end surfaces of a stator core 32, and a second coil end group 31b, which is formed on the other one of axial direction end surfaces of the stator core 32. The group 31a is arranged so as to be surrounded by a turn part of one segment, composed of electric conductor and a turn part of the other segment. The second group 31b is constituted by jointing the end portions of the segments so as to form a lap winding. Interference between the segments in the coil end groups can be prevented, while the number of turns can be ensured by the lap winding, and junction parts can be arranged in order on the single side in the axial direction of the stator, so that a manufacturing process is facilitated.

46. 发明专利

JPH11164500A AC GENERATOR FOR VEHICLE 失效
公开(公告)号：JPH11164500A
公开(公告)日：1999-06-18
申请号：JP1801898
申请日：1998-01-13
申请人： DENSO CORP
发明人： UMEDA ATSUSHI , SHIGA TSUTOMU , KUSASE ARATA
IPC分类号： H02K1/16 , H02K3/24
摘要： PROBLEM TO BE SOLVED: To provide an AC generator for vehicle at a low cost, which is small- sized and high-powered and increases its output, especially in a low rotational speed range, and has little noise. SOLUTION: A stator 2 of an AC generator for vehicle is formed with a number of slots having an opening part 35 on its inner periphery side, a protruding part 36 for magnetic flux collection is formed in a circumferential direction at a tip part between adjacent slots, and they have been formed beforehand by means of press processing or the like in the storage of a thin steel plate. A stator winding 33 has a diameter larger than the width of the slot opening part 35, and the tip of a conductor is inserted in the slot from one side surface in the axial direction of a stator iron core 32 to be taken out to the other side surface, and pulled out to the original side from the slot corresponding to an electrical angle of 180 degrees. By having this procedure repeated, a single-phase winding is formed. By having the electrical angle shifted by 120 degrees each, a three-phase AC winding is constituted.

47. 发明专利

JPH11164499A AC GENERATOR FOR VEHICLE 失效
公开(公告)号：JPH11164499A
公开(公告)日：1999-06-18
申请号：JP3724498
申请日：1998-02-19
申请人： DENSO CORP
发明人： UMEDA ATSUSHI , SHIGA TSUTOMU , KUSASE ARATA
IPC分类号： H02K1/14 , H02K19/22
摘要： PROBLEM TO BE SOLVED: To provide a generator for vehicle which has good cooling, high efficiency and high output, despite its small size and low price without having to decrease coil resistor and using a magnet. SOLUTION: This AC generator for vehicle is provided with a stator and a rotor. The rotor involves a field coil, and a randel type iron core having a claw-shaped magnetic pole part 73 folded so as to surround a cylindrical part 71, a yoke part 72 extending in the outer-periphery direction, and the field coil. A ratio L1/L2 of an axial length of a stator iron core 32 to an axial length L2 of the cylindrical part 71 is set in a range of 1.25-1.75. A ratio R2/R1 of an outside diameter R1 of the claw-shaped magnetic pole part 73 to an outside diameter R2 of the cylindrical part 71 is set in a range of 0.54-0.60.

48. 发明专利

JPH09310665A STARTER 失效
公开(公告)号：JPH09310665A
公开(公告)日：1997-12-02
申请号：JP12416896
申请日：1996-05-20
申请人： DENSO CORP
发明人： OMI MASANORI , SHIGA TSUTOMU
IPC分类号： F02N15/06 , F02N11/00
摘要： PROBLEM TO BE SOLVED: To improve vibration resistance by a fixing system having a so-called cantilever structure where only housing side is fixed. SOLUTION: The housing 19 of a starter 1 has a spigot part 21 and a flange part 22 which serve for attaching to a frame body (an engine body or a flywheel housing) on an engine side. The spigot part 21 is circular in an outer peripheral form in an axial view, and spigot-fitted in a fitting hole 20b provided on the attaching face 20a of the frame body 20. But the outside diameter HO is set up to be larger than a distance from the attaching face 20a of the frame body 20 to the center of gravity W of an armature 8 (center of an armature core 12).

49. 发明专利

JPH09280145A PLANETARY GEAR DECELERATING TYPE STARTER 失效
公开(公告)号：JPH09280145A
公开(公告)日：1997-10-28
申请号：JP4913996
申请日：1996-03-06
申请人： DENSO CORP
发明人： KAJINO SADAYOSHI , SHIGA TSUTOMU , OMI MASANORI
IPC分类号： F02N15/02 , F02N11/00 , F02N15/06
摘要： PROBLEM TO BE SOLVED: To set the module and the decelerate ratio of the gear of a planetary gear decelerating device to specified values so as to further miniaturize the device and its weight by providing a first impact buffer device for suppressing impacts produced when a pinion is engaged with a ring gear and a second impact buffer device for suppressing impacts produced during clanking. SOLUTION: When engaging impacts occur during engaging between a ring gear and a pinion 65, since the size of reaction torque transmitted to an internal gear 44 is set lower than the permissible bending strength of the gear, which is necessary for going over a recessed and projecting fitting part 7, the internal gear 44 is rotated, the impacts are cut to be lower than the gear permissible bending strength and converted into friction heat in the recessed and projecting fitting part 7. Friction forces produced in diameter and peripheral directions are absorbed by the twisting or deformation of the cylindrical part of the internal gear 44, and thus repeated impact forces reaching inner teeth 45 during clanking are reduced. Thus, since two forms of impact absorption are realized, a module ratio is set lower than 1 and a speed reducing ratio is set over 6.

50. 发明专利

JPH09256935A ONE-WAY CLUTH AND STARTER HAVING IT 失效
公开(公告)号：JPH09256935A
公开(公告)日：1997-09-30
申请号：JP6451996
申请日：1996-03-21
申请人： DENSO CORP
发明人： MATSUSHIMA KEIICHI , SHIGA TSUTOMU , OMI MASANORI
IPC分类号： F02N15/02
摘要： PROBLEM TO BE SOLVED: To provide a one-way clutch which can absorb an impact torque, that is, set a maximum transmission torque accurately and easily and a starter having it. SOLUTION: A locking recess part 53 for locking a roller is formed on a roller rolling face of a rotating element having a circumferential face opposed to a circumferential face of a cylindrical body having a wedge-state groove for containing a roller of a roller-type one-way clutch. Also, an elastic body 55 for separating this roller from the locking recess part 53 at the time of overrunning is contained in a ring-state groove 54 and urges the roller in the direction outside the radius. Thus, no vibration or noise is generated due to contact between the roller and the locking recess part 53 at overrunning.

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