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1. 发明专利

JPH05330445A REAR WHEEL STEERING DEVICE 失效
公开(公告)号：JPH05330445A
公开(公告)日：1993-12-14
申请号：JP14421792
申请日：1992-06-04
申请人： AISIN SEIKI , TOYOTA MOTOR CORP
发明人： WATANABE TSUKASA , SUGIHARA MASAMI , HASHIMOTO AKIO , MIYATA TADAYASU , HONDA TORU , SUZUKI HIDEETSU , AIZAWA HIROAKI , TANETA AKIYA , SUGIYAMA MIZUHO
IPC分类号： B62D5/04 , B62D7/14
摘要： PURPOSE:To provide a rear wheel steering device which can be reduced the dimension of the device and prevent the meshing of a gear. CONSTITUTION:A rear wheel steering device is arranged in the revolution enabled form around a shaft 1 which is arranged in slidable manner in the lateral direction of a vehicle and can steer rear wheels and a shaft extending in the longitudinal direction of a vehicle for the slide direction of the shaft 1. The rear wheel steering device is equipped with a pinion 6 meshed with the shaft 1, the gear 7 of a hypoid gear which is equipped with gear teeth on the pinion 6 side which is arranged coaxially with the pinion 6 and formed integrally and revolves integrally with the pinion 6, the pinion 8 of the hypoid gear which is meshed with the gear 7 of the hypoid gear and a brushless motor 4 which is connected with the pinion 8 of the hypoid gear and revolving the pinion 8 of the hypoid gear.

2. 发明专利

JPH03200416A PRESSURE CONTROLLER OF SUSPENSION 失效
公开(公告)号：JPH03200416A
公开(公告)日：1991-09-02
申请号：JP25020489
申请日：1989-09-26
申请人： TOYOTA MOTOR CORP
发明人： KOMAZAWA OSAMU , WATANABE TSUKASA , ONUMA TOSHIO , KONDO HIROSHI
IPC分类号： B60G17/04 , B60G17/015 , B60G17/056
摘要： PURPOSE:To simplify adjustment of a vehicle height by providing a needle valve for regulating flow degree of a flow port between a target pressure space and a low pressure pipe on a pressure control valve for controlling pressure to be supplied to/exhausted from a shock absorber and controlling the needle valve with a driving means. CONSTITUTION:In an apparatus wherein a vehicle height is adjusted by controlling pressure supplied to/exhausted from a shock absorber of a suspension provided on each wheel by a pressure control valve 80, a valve body of the pressure control valve 80 is formed with a line pressure port 82, a low pressure port 85, an output port 84, a high pressure port 87 and a low pressure port 89. A spool 90 which is driven with pressure of the output port 84 and a target pressure space 88 received on both ends is inserted into the valve body as well as a needle valve 95 whose tip is facing a flow port 94 between the target pressure space 88 and the low pressure port 89 and which regulates the flow degree is provided. The needle valve 95 is moved and guided by a valve supporting material 95G and drive-controlled by a driving means including an electric coil 99.

3. 发明专利

JPH02283515A FLUID PRESSURE TYPE ACTIVE SUSPENSION 失效
公开(公告)号：JPH02283515A
公开(公告)日：1990-11-21
申请号：JP10488689
申请日：1989-04-25
申请人： TOYOTA MOTOR CORP
发明人： KONDO HIROSHI , TAKEMA SHUICHI , YUYA TOSHIO , YONEKAWA TAKASHI , ONUMA TOSHIO , WATANABE TSUKASA , OSANAWA SATOSHI
IPC分类号： B60G17/015
摘要： PURPOSE:To speedily remove pressure oscillation in an actuator in a suspension for automobile by closing an opening/closing valve provided on the way of supply/discharge path of operation fluid when the frequency of oscillation exceeding a specified value of the fluid pressure in the actuator is above a reference value. CONSTITUTION:Bypass filter processing is performed with respect to a signal indicating the pressure in operation fluid chambers 2FL-2RR detected by means of pressure sensors 199FL-199RR. The present pressure and the pressure read in one cycle before and the pressure read in two cycles before are compared to a reference value to perform the following step processing and to close shut-off valves 150, 152, 154, 156 exceeds the reference value when the number that the maximum value of pressure fluctuation is attained. It is thus possible to speedily remove pressure oscillation.

4. 发明专利

JPH02212214A PRESSURE CONTROL DEVICE FOR SUSPENSION 失效
公开(公告)号：JPH02212214A
公开(公告)日：1990-08-23
申请号：JP3433289
申请日：1989-02-14
申请人： TOYOTA MOTOR CORP
发明人： OSANAWA SATOSHI , WATANABE TSUKASA , TAKEMA SHUICHI , YUYA TOSHIO , ONUMA TOSHIO , YONEKAWA TAKASHI
IPC分类号： B60G17/015
摘要： PURPOSE:To reduce fluctuation of a suspension pressure by dispersion of a piping resistance by multiplying a coefficient for compensating the dispersion of the piping resistance at a pressure supply way to each suspension by a designated pressure value to compensate the designated pressure value, and controlling a pressure control means based on an obtained value. CONSTITUTION:A pressure source 1 is provided for supplying pressure fluid to front wheel side and rear wheel side high pressure supply tubes 6, 9 reaching a suspension 100 (100fr-100rr) for each wheel, and supply and discharge of pressure fluid to/from the suspension 100 is controlled by a pressure control valve device 80 (80fr-80rr). In this case, a designating means (unillustrated) for designating a pressure to be given to the suspension 100 is provided. A coefficient for compensating dispersion of a piping resistance at a pressure supply way to the suspension 100 is set for each suspension corresponding to a connection position of the suspension 100 with the pressure source 1, and this coefficient is multiplied by a designated pressure value. The pressure control valve device 80 is thus controlled based on a compensated designated pressure value.

5. 发明专利

JPH02176901A ELECTRIC CONDUCTION CONTROLLER FOR LOAD 失效
公开(公告)号：JPH02176901A
公开(公告)日：1990-07-10
申请号：JP33186288
申请日：1988-12-28
申请人： TOYOTA MOTOR CORP
发明人： KOKUBO KOICHI , WATANABE TSUKASA , OHASHI KAORU , YUYA TOSHIO
IPC分类号： G05B9/02
摘要： PURPOSE:To prevent an abnormal fluctuation of an energized normal state of a load caused by abnormality by inhibiting to update information for determining an energizing level of a load and maintaining it in its previous level, when abnormality of a runaway, etc., of a microcomputer is detected. CONSTITUTION:When a runaway detecting circuit 142 and/or a decrease voltage detecting circuit 143 of a reset control unit 140 output a reset signal, an output of a logical gate G1 in a duty control unit 170 becomes a low level L, and a logical gate G2 obstructs a fact that latch signals of control lines LP1-LP6 are applied to a latch control terminal CK of a latch LT. Accordingly, even of CPUs 110, 120 try to write an abnormal duty value to the duty control unit 170, a duty value held in the latch LT is maintained in the previous value. In such a way, when a runaway of a microcomputer and a drop of a power supply voltage, etc., are generated, it can be prevented that an electric conduction duty of a load becomes abnormal.

6. 发明专利

JPS61248975A ELECTROMAGNETIC FLOW REGULATING DEVICE 失效
公开(公告)号：JPS61248975A
公开(公告)日：1986-11-06
申请号：JP9146085
申请日：1985-04-27
申请人： TOYOTA MOTOR CORP
发明人： IDA MASAHIRO , WATANABE TSUKASA , YOKOYA YUJI , SANADA YUKITOMO
IPC分类号： F16F9/46 , F16K31/06
摘要： PURPOSE:To aim at miniaturizing the captioned electromagnetic flow regulating device as well as to make it possible to drive a plunger with low force, by eliminating fluid flow force exerted to the plungeer in the sliding direction thereof. CONSTITUTION:The first through holes 3a, 3b are provided at the center part of plungers 6, 7 along the axial direction thereof and the second through holes 3c, 3d for intercommunicating the first through holes 3a, 3b with the circumferential surface of the plunger are also provided. Further, the sliding direction of the plungers 6, 7 crosses rectangularly with the flow direction of fluid passing through the interior of the plungers 6, 7. Owing to this constitution, even if pressure becomes higher, fluid flow force which is exerted on the plungers 6, 7 in the sliding direction is not generated so that the plungers 6, 7 are operated with low force. And, it is possible to miniaturize said regulating device.

7. 发明专利

JPH09118245A REAR WHEEL STEERING ANGLE CONTROL DEVICE 失效
公开(公告)号：JPH09118245A
公开(公告)日：1997-05-06
申请号：JP30342995
申请日：1995-10-26
申请人： AISIN SEIKI , TOYOTA MOTOR CORP
发明人： TANEDA AKICHIKA , NAKAISHI TAKAMICHI , WATANABE TSUKASA , OHASHI KAORU , SOMADA HISASHI
IPC分类号： B62D6/00 , B62D5/04 , B62D7/14
摘要： PROBLEM TO BE SOLVED: To reduce the size and weight of the whole device while keeping the dimensional precision of a ring gear used in a transmission mechanism, in a rear wheel steering angle control device having an actuator and the transmission mechanism. SOLUTION: This device has a transmission mechanism having a plurality of planetary gears 73a between sun gears 71a, 75a and a ring gear 72, the ring gear 72 is integrally molded in the inside of a housing 10 by use of resin material, a winding part 3 is housed in and fixed to the housing 10. The ring gear 72 and the sun gears 71a, 75 are desirably formed of a resin material containing a prescribed quantity of glass fiber, and the planetary gears 73a, 76a are formed of a resin material containing no glass fiber.

8. 发明专利

JPH0747963A CAR STEERING SYSTEM 失效
公开(公告)号：JPH0747963A
公开(公告)日：1995-02-21
申请号：JP19328693
申请日：1993-08-04
申请人： AISIN SEIKI , TOYOTA MOTOR CORP
发明人： WATANABE TSUKASA , SUZUKI HIDEETSU , GOTO TAKESHI , FUJITA KOZO
IPC分类号： B62D5/04 , B62D7/14 , B62D7/15
摘要： PURPOSE:To make a return spring omissible and also a neutral resetting achievable, in a steering system which is compact in size, low load and not in motion with force out of wheels. CONSTITUTION:This steering system is provided with a brushless electric motor 12 with a hollow turning shaft 27 and a three-phase two-system electric coil 44 mounted on a car, a trapezoidal female thread concentrically as one body with the hollow turning shaft 27, an operating shaft 25 to be piercing through an inner part of the turning shaft 27 in a direction its shaft extending and operating for steering and driving each wheel, a trapezoidal male thread concentrically as one body with this operating shaft 25 and screwed in the trapezoidal female thread, and a motor driver energizing the brushless electric motor 12 for turning, respectively.

9. 发明专利

JPH0569834A ELECTRICALLY-OPERATED AUXILIARY STEERING DEVICE FOR VEHICLE 失效
公开(公告)号：JPH0569834A
公开(公告)日：1993-03-23
申请号：JP23068291
申请日：1991-09-11
申请人： AISIN SEIKI , TOYOTA MOTOR CORP
发明人： WATANABE TSUKASA , KOJIMA FUMIO , SUGIYAMA MIZUHO
IPC分类号： B62D5/04 , B62D7/14 , B62D7/15
摘要： PURPOSE:To return orientation of rear wheels to the center when a rear-wheel steering mechanism of a 4WS system stops working, to minimize energy required for driving and to reduce the size of the device. CONSTITUTION:A main motor M1 is connected to a steering shaft 1 through driving force transmitting mechanisms 1a, 5a, 5b and 6a, and an auxiliary motor M2 is connected to a driving shaft 6 through gear mechanisms 9, 12, 8a and 7 including an electromagnetic clutch CL. M2 is usually separated from the driving shaft, and when failure is detected, M2 is driven by linking the electromagnetic clutch, and the rear-wheel steering position is returned to the center.

10. 发明专利

JPH04108072A REAR WHEEL STEERING DEVICE 失效
公开(公告)号：JPH04108072A
公开(公告)日：1992-04-09
申请号：JP22011290
申请日：1990-08-23
申请人： AISIN SEIKI , TOYOTA MOTOR CORP
发明人： TANEDA AKICHIKA , WATANABE TSUKASA , SUGIYAMA MIZUHO
IPC分类号： B62D6/00 , B62D7/14 , B62D101/00 , B62D113/00
摘要： PURPOSE:To eliminate generation of a residual pressure in an oil path so as to contrive miniaturization of an oil hydraulic pump by discharging operating oil, delivered from the oil hydraulic pump when a rear wheel is not steered, directly to a drain tank through an under lap formed in a direction switching valve. CONSTITUTION:A hydraulic control unit 11, controlled in accordance with a vehicle running condition by an electronic control unit ECU, controls a power cylinder 20 to change a direction of a rear wheel, and the unit 11 has a direction switching valve 13. Here, two operating oil supply ports 18R, 18L, operating oil feed ports 21R, 21L and an operating oil discharge port 22 are formed in a housing 16 of the direction switching valve 13, and grooves 23R, 23L are formed in an internal peripheral surface of the housing 16 between each operating oil supply port 18R, 18L and the discharge port 22. On the other hand, land parts 24R, 24L are formed in a location corresponding to the grooves 23R, 23L, in a neutral position, in a spool 17, and each land part 24R, 24L and shoulder parts 23RK, 23LK of the grooves 23R, 23L serve as an under lap so as to form a space S at neutral time of the spool 17.

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