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21. 发明专利

JPH02225872A CONTROL DEVICE OF AUTOMATIC TRANSMISSION 失效
公开(公告)号：JPH02225872A
公开(公告)日：1990-09-07
申请号：JP1640590
申请日：1990-01-26
申请人： TOYOTA MOTOR CORP , AISIN AW CO
发明人： FUKUMURA KAGENORI , YOSHIZAWA KENICHI , YASUE HIDEKI , NISHIKAWA SEIICHI , AKASHI MITSUO
IPC分类号： F16H61/04 , F16H59/02 , F16H59/08 , F16H59/24 , F16H59/40 , F16H59/44 , F16H59/54 , F16H59/70 , F16H59/78 , F16H61/02 , F16H61/10 , F16H61/16 , F16H61/18
摘要： PURPOSE:To prevent a speed change the driver does not intend by limiting a down shift of a main speed change gear when it is detected that the operation position to determine the speed change range of an auxiliary speed change gear was shifted from a lower speed range position to a higher speed range position. CONSTITUTION:When the driver shifts the operation position to determine the speed change range of an auxiliary speed change gear 16 from a lower speed range position to a higher speed range position by a pattern select switch 26, a CPU 36 controls an electromagnetic valve 48 to shift the auxiliary speed change gear 16 to a higher speed range through an oil pressure circuit 40. As a result, the car speed detected by a car speed sensor 32 is lowered, and in this case, the limiting device of the CPU 36 limits a down shift of a main speed change gear 14 regardless of the reduction of the car speed. Consequently, the generation of a speed change at the main speed change gear 14 that the driver does not intend is prevented, and an unpleasant feeling of the increase of engine rotation frequency and the generation of a speed chock can be avoided.

22. 发明专利

JPH10184866A AUTOMATIC TRANSMISSION 失效
公开(公告)号：JPH10184866A
公开(公告)日：1998-07-14
申请号：JP35656296
申请日：1996-12-27
申请人： AISIN AW CO , TOYOTA MOTOR CORP
发明人： YOKOYAMA FUMITOMO , OZAKI KAZUHISA , AZEYANAGI AKIHIRO , HONGOYA AKIHITO , MIYATA HIDEKI , FUKUMURA KAGENORI , NAKAWAKI YASUNORI , TABATA ATSUSHI , SAYO SHOICHI
IPC分类号： F16H57/10 , F16H57/02 , F16H57/03 , F16H57/04
摘要： PROBLEM TO BE SOLVED: To eliminate generation of a casting burr so as to improve productivity by forming an inner circumference spline part in an automatic transmission case into an easily stamping shape. SOLUTION: An automatic transmission case 10 is provided with a spline groove 13, which is formed by means of casting by inserting an inner die DS deciding the inner circumference face shape from the front side, and a notch part 14, which is formed by notching the spline part in casting by means of a lower die DU inserted from the lower side of the case 10 across the spline part. Spline grooves 13a, 13b in the lower part of the case 10 are formed into grooves with trapezoidal cross sections and width of their groove side faces Fa, Fb on the side, on which torque applied from a frictional engaging element is small, are spread on the inner circumference side. An inclination θ of each of the groove side faces Fa, Fb becomes a draft when a lower die stamping is carried out.

23. 发明专利

JPH08159264A OIL PRESSURE CONTROL DEVICE FOR AUTOMATIC TRANSMISSION 失效
公开(公告)号：JPH08159264A
公开(公告)日：1996-06-21
申请号：JP32949594
申请日：1994-12-02
申请人： AISIN AW CO , TOYOTA MOTOR CORP
发明人： TSUKAMOTO KAZUMASA , ANDO MASAHIKO , FUKATSU AKIRA , KUNO TAKAYUKI , FUKUMURA KAGENORI , OBA HIDEHIRO , HOJO YASUO , TABATA ATSUSHI , TAKAHASHI NOBUAKI , KAIGAWA MASATO
IPC分类号： F16H61/06
摘要： PURPOSE: To prevent the occurrence of suction owing to the pump action of a clutch hydraulic servo during N racing and to prevent the generation of a centrifugal oil pressure. CONSTITUTION: An oil pressure control device comprises an oil pressure source 10; a hydraulic servo; an oil passage 11; an oil passage 12 with an orifice; and an accumulator 30. The accumulator 30 is located in the oil passage 11 and the oil passage 11 is communicated and disconnected by the stroke of a piston 32. A switching means 40 to switch communication and disconnection of the oil passage 11 is placed between the accumulator 30 and the hydraulic servo. When an oil pressure fed from the oil pressure source 10 to the oil passage 11 exceeds a given value, the oil passage 11 communicates and during N racing, suction of oil from the oil passage 11 owing to the pump action of the hydraulic servo is prevented from occurring.

24. 发明专利

JPH1122811A OIL SURFACE STABILIZING DEVICE FOR AUTOMATIC TRANSMISSION 失效
公开(公告)号：JPH1122811A
公开(公告)日：1999-01-26
申请号：JP19059797
申请日：1997-06-30
申请人： AISIN AW CO , TOYOTA MOTOR CORP
发明人： KOBAYASHI KEIZO , ISHIKAWA KAZUNORI , OZAKI KAZUHISA , FUKATSU AKIRA , HIJIKATA MAKOTO , MAE TOSHIYUKI , FUKUMURA KAGENORI , HOJO YASUO , HAMASHIMA TETSUO , TABATA ATSUSHI , TOMOMATSU HIDEO
IPC分类号： F16H57/04
摘要： PROBLEM TO BE SOLVED: To prevent air sucking through an oil reservoir of an automatic transmission. SOLUTION: An automatic transmission is equipped with a valve body 1 having an exhaust hole 11 for a returning working oil which was supplied to various parts of the transmission, an oil reservoir 3 to capture the return oil exhausted, and a strainer 2 which has a suction port 21 confronting the oil reservoir 3 and filtrates the working oil sucked up from the reservoir 3 for circulation. The exhaust hole 11 is fitted with a guide means which leads the return oil in the direction along the surface of the working oil captured by the reservoir 3 and precludes wave formation originating from falling of the return oil onto the oil surface.

25. 发明专利

JPH1120632A PARKING DEVICE FOR AUTOMATIC TRANSMISSION 失效
公开(公告)号：JPH1120632A
公开(公告)日：1999-01-26
申请号：JP17456297
申请日：1997-06-30
申请人： AISIN AW CO , TOYOTA MOTOR CORP
发明人： KOBAYASHI KEIZO , ISHIKAWA KAZUNORI , OZAKI KAZUHISA , AZEYANAGI AKIHIRO , HONGOYA AKIHITO , TOTSUKA TATSUO , KATO HIROSHI , FUKUMURA KAGENORI , HOJO YASUO , TABATA ATSUSHI , SAYO SHOICHI
IPC分类号： B60T1/06
摘要： PROBLEM TO BE SOLVED: To prevent giving a sense of incongruity when a parking range is released after a vehicle stops. SOLUTION: This device has a parking gear 16, a parking pole 17 which is arranged to oscillate freely and is provided with a claw 18 which selectively meshes with a tooth groove 22 of the parking gear 16, a meshing prevention means which is rotatably arranged for the parking pole 17 and adopts a prevention position where the meshing of the claw 18 and the tooth groove 22 is prevented and a prevention release position where the prevention of the meshing is released, and a meshing prevention release means which is rotated in the interlocking relationship with the rotation of the parking gear 16 and puts the meshing prevention means at the prevention release position when it comes in contact with the meshing prevention means. A surface treatment for increasing friction coefficient is applied to a surface of the meshing prevention release means to form a high friction face.

26. 发明专利

JPH0926002A AUTOMATIC TRANSMISSION FOR VEHICLE 失效
公开(公告)号：JPH0926002A
公开(公告)日：1997-01-28
申请号：JP19906195
申请日：1995-07-12
申请人： TOYOTA MOTOR CORP , AISIN AW CO
发明人： TABATA ATSUSHI , FUKUMURA KAGENORI , HOJO YASUO , SHIMIZU TAKASHI , KASUYA SATORU
IPC分类号： F16H3/44 , F16H3/66
摘要： PROBLEM TO BE SOLVED: To aim at a promotion of low-unit cost of production as well as to make improvements in assembleability and car-mountability by setting up a power transmission route via plural sets of planetary gear mechanisms different in a gear ratio with one another. SOLUTION: The number of teeth of ring gears 41 and 42, and those of normal module, normal pressure angle, twisting angle, pitch circular radius, basic semidiameter, tooth bottom diameter, tooth top diameter, tooth depth, dedendum, addendum, lead, normal addendum modification coefficient and circular tooth thickness in two planetary gear mechanisms 36 and 38, where the ratios of the number of teeth of two sun gears 37, 39 and that of ring gears 41 and 42 are different from each other, are all made into the same respectively. In addition, at least those of circular tooth thickness, normal angle addendum modification coefficient, dedendum, addendum, tooth depth, twisting angle, normal pressure angle, and normal module of two pinions 43 and 44 of these two planetary gear mechanisms 36 and 38 are made the same respectively. With this constitution, tools required for cutting work of the ring gears 41 and 42 are jointly usable, so that promotion of inexpensiveness in equipment cost is made achievable.

27. 发明专利

JPH08159265A OIL PRESSURE CONTROL DEVICE FOR AUTOMATIC TRANSMISSION 失效
公开(公告)号：JPH08159265A
公开(公告)日：1996-06-21
申请号：JP32949294
申请日：1994-12-02
申请人： AISIN AW CO , TOYOTA MOTOR CORP
发明人： TSUKAMOTO KAZUMASA , ANDO MASAHIKO , FUKATSU AKIRA , SAKAI MOTOYUKI , KAIGAWA MASATO , FUKUMURA KAGENORI , OBA HIDEHIRO , HOJO YASUO , TABATA ATSUSHI , TAKAHASHI NOBUAKI
IPC分类号： F16H61/08 , F16H61/02
摘要： PURPOSE: To reduce the occurrence of disturbance during regulation of pressure for the grip change shift of a frictional engagement element and to control a release pressure without a replay delay. CONSTITUTION: A shift is effected through grip change of a frictional engagement element, and an oil pressure control device for an automatic transmission comprises hydraulic servoes 29 and 28, a switching valve 22; a signal pressure generating means; and a pressure regulating valve 25 to regulate a feed pressure to the hydraulic servo 28. The pressure regulating valve 25 comprises a first valve body 253 to receive a signal pressure PSLU and the feedback pressure of the release pressure of the hydraulic servo 28; and a second valve body 252 to receive the engagement pressure of the hydraulic servo 29, and the second valve body 252 is always energized for contact with the first valve body by an energizing means 259.

28. 发明专利

DE69620308D1 未知
公开(公告)号：DE69620308D1
公开(公告)日：2002-05-08
申请号：DE69620308
申请日：1996-07-11
申请人： AISIN AW CO
发明人： TABATA ATSUSHI , FUKUMURA KAGENORI , HOJO YASUO , SHIMIZU TAKASHI , KASUYA SATORU
IPC分类号： F16H3/44 , F16H3/66
摘要： An automatic transmission for a vehicle, as provided a plurality of sets of planetary gear units in which the ratios of the tooth numbers of the sun gears to the tooth numbers of the ring gears are different from each other. In the two sets of planetary gear units in which the ratios of the tooth numbers of the sun gears to the tooth numbers of the ring gears are different from each other, the ring gears are identical to each other in the tooth number, the normal module, the normal pressure angle, the angle of torsion, the pitch radius, the base radius, the bottom diameter, the top diameter, the tooth height, the dedendum, the addendum, the lead, the coefficient of normal shift and the arcuate tooth thickness, and the pinions of those two sets of planetary gear units are identical to each other in at least the arcuate tooth thickness, the coefficient of normal shift, the dedendum, the addendum, the tooth height, the angle of torsion, the normal pressure angle and the normal module.

29. 发明专利

GB2307015A Shift control system for automatic transmission 未知
公开(公告)号：GB2307015A
公开(公告)日：1997-05-14
申请号：GB9702689
申请日：1994-05-31
申请人： TOYOTA MOTOR CO LTD , AISIN AW CO
发明人： OBA HIDEHIRO , FUKUMURA KAGENORI , HOJO YASUO , TABATA ATSUSHI , KIMURA HIROMICHI , KAIGAWA MASATO , ANDO MASAHIKO , FUKATSU AKIRA , YAMAMOTO YOSHIHISA , HAYABUCHI MASAHIRO , TSUKAMOTO KAZUMASA
IPC分类号： F16H61/06 , F16H61/12 , F16H61/04 , B60K41/06 , F16H61/18
摘要： A shift control system of an automatic transmission for setting a predetermined gear stage by applying first frictional engagement means and releasing second frictional engagement means comprises a pressure regulating mechanism for regulating an oil pressure to be fed to or drained from the first frictional engagement means, a failure detector for detecting a failure of the regulation and control of the oil pressure and a gear stage inhibitor for inhibiting the setting of the predetermined gear stage if the failure is detected by the failure detector. As part of the control system a brake B3, engaged in second gear, has its apply pressure regulated during shift by a regulating valve 78 in response to signal pressures at ports 85, 86 and is drained through an orifice control valve 105 in turn controlled by a signal pressure from a solenoid valve S3.

30. 发明专利

GB2278654A Shift control system for automatic transmission inhibits shift on failure dete ction 未知
公开(公告)号：GB2278654A
公开(公告)日：1994-12-07
申请号：GB9410889
申请日：1994-05-31
申请人： TOYOTA MOTOR CO LTD , AISIN AW CO
发明人： OBA HIDEHIRO , FUKUMURA KAGENORI , HOJO YASUO , TABATA ATSUSHI , KIMURA HIROMICHI , KAIGAWA MASATO , ANDO MASAHIKO , FUKATSU AKIRA , HAYABUCHI MASAHIRO , TSUKAMOTO KAZUMASA , YAMAMOTO YOSHIHISA
IPC分类号： F16H59/24 , F16H59/36 , F16H59/68 , F16H61/00 , F16H61/02 , F16H61/04 , F16H61/06 , F16H61/08 , F16H61/12 , F16H61/14 , F16H61/18 , B60K41/06
摘要： A shift control system of an automatic transmission for setting a predetermined gear stage by applying first frictional engagement means and releasing second frictional engagement means, comprising: a pressure regulating mechanism for regulating an oil pressure to be fed to or drained from the first frictional engagement means; a failure detector for detecting a failure of an apparatus to participate in the regulation and control of the oil pressure which is to be fed to or drained from at least one of the first and second frictional engagement means; and a gear stage inhibitor for inhibiting the setting of the predetermined gear stage if the failure is detected by the failure detector. The system preferably detects apparatus failure and/or abnormal lockup clutch operation and inhibits change from 1st to 2nd ratio, enforcing change from 1st to 3rd instead. The system preferably also increases a reduction of engine torque during shift if failure detection occurs. A system preventing "tie-up" (simultaneous engagement of the clutches/brakes for two ratios at once) is also claimed.

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