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1. 发明专利

JPH10281235A POWER TRANSMISSION DEVICE 失效
公开(公告)号：JPH10281235A
公开(公告)日：1998-10-23
申请号：JP8514297
申请日：1997-04-03
申请人： KAYABA INDUSTRY CO LTD
发明人： KATA KATSUKUNI , NARUSE SHINJI
IPC分类号： B62D3/04 , B62D5/04 , B62D5/24 , F16H1/16 , H02K7/116
摘要： PROBLEM TO BE SOLVED: To provide a power transmission device to reduce the generation of tooth strike noise between a worm and a worm wheel, and ensure reliable engagement between the worm and the worm wheel easily at a low cost. SOLUTION: The worm shaft containing part 1C of a gear case 1 is formed in the shape of an oblong in cross section wherein a central axis is eccentrically positioned from the output shaft 14 of an electric motor 15 to the work wheel 2 side. An O-ring-form elastic member 19 is arranged in a circular groove concentrically formed in the inner peripheral surface of the worm shaft containing part 1C. And a worm shaft 4 is energized to the worm wheel 2 side by the elastic member 19. Further, a crowning work is applied on the tooth surface 2A of a worm 4E or the worm wheel 2.

2. 发明专利

JPH09263257A POWER STEERING DEVICE 失效
公开(公告)号：JPH09263257A
公开(公告)日：1997-10-07
申请号：JP7484396
申请日：1996-03-28
申请人： KAYABA INDUSTRY CO LTD
发明人： KATA KATSUKUNI , HAYASHI MASUMI
IPC分类号： B62D6/00 , B62D5/07
摘要： PROBLEM TO BE SOLVED: To provide a power steering device with an excellent responsiveness which can obtain a power assist corresponding to the handle operation at the handle operating time. SOLUTION: In a power steering device 100 in which an oil pump 4 to feed the pressure oil to a power steering cylinder 9 through a power steering valve is driven by an electric motor 7, the power steering valve is made as the first control valve 8a, the second control valve 8b with the sensitivity higher than a first control valve 8a is provided in parallel to the first control valve 8a, while a detecting means 10 to detect the variation of the passing flow rate of the pressure oil is provided at the downstream side of a second control valve 8b, and the rotation frequency of the electric motor 7 is to be controlled depending on the detecting signal of the detecting means 10.

3. 发明专利

JPH09254797A POWER STEERING DEVICE 失效
公开(公告)号：JPH09254797A
公开(公告)日：1997-09-30
申请号：JP7037796
申请日：1996-03-26
申请人： KAYABA INDUSTRY CO LTD
发明人： KATA KATSUKUNI , HAYASHI MASUMI
IPC分类号： B62D6/00 , B62D5/07
摘要： PROBLEM TO BE SOLVED: To provide a power steering device surely operating an oil pump so as to supply hydraulic oil, even when an electric motor is driven at low rotating speed. SOLUTION: This power steering device is constituted so that a vane type oil pump 4 supplying hydraulic oil to a power steering cylinder built in a steering gear box 3 is drive by an electric motor 7. In this case, the rotating speed of the electric motor 7 is temporarily raised up to rotating speed over the rotating speed of the oil pump 4 delivering hydraulic oil, interlocking with ON operation of an ignition switch.

4. 发明专利

JP2558120B2 失效
公开(公告)号：JP2558120B2
公开(公告)日：1996-11-27
申请号：JP14971787
申请日：1987-06-16
申请人： KAYABA INDUSTRY CO LTD
发明人： KOMAMURA SEIJI , KATA KATSUKUNI , HAYASHI MASATAKA , SUGIMOTO BUNICHI
IPC分类号： B62D6/02 , B62D5/04 , B62D6/00 , B62D101/00 , B62D119/00

5. 发明专利

JPH0829709B2 失效
公开(公告)号：JPH0829709B2
公开(公告)日：1996-03-27
申请号：JP20404386
申请日：1986-08-30
申请人： KAYABA INDUSTRY CO LTD
发明人： KOMAMURA SEIJI , KATA KATSUKUNI , SUGIMOTO BUNICHI
IPC分类号： B62D5/04 , B62D6/00 , B62D6/02 , B62D101/00 , B62D137/00

6. 发明专利

JPH07186994A CONTROL UNIT OF MOTOR-DRIVEN POWER STEERING DEVICE FOR VEHICLE 失效
公开(公告)号：JPH07186994A
公开(公告)日：1995-07-25
申请号：JP34785793
申请日：1993-12-24
申请人： KAYABA INDUSTRY CO LTD
发明人： KATA KATSUKUNI , OGISO YOSHINORI , SASAKI KAZUHIRO
IPC分类号： B62D6/00 , B62D5/04
摘要： PURPOSE:To improve the extent of convergence in time of high speed traveling by impressing an electric current motor according to assist torque in the same direction as the motor rotational direction at low speed and another assist torque in the reverse direction to the motor rotational direction at high speed respectively, and making a wheel return better in time of low speed traveling. CONSTITUTION:A second assist torque decision means 52 decides the extent of assist torque according to car speed and motor rotation a speed, deciding plus torque at a low speed area in border of somewhere about 40 kilometers, and at a high speed area, it decides the minus torque the other way. This plus torque means that it is in the same direction as the motor rotational direction. The minus torque means that it is in the reverse direction to the motor rotational direction. As electric motor current value decision means 9 decides a current value to be impressed on an electric motor 7 on the basis of the decided assist torque. A current motor driving means 11 impresses the decided current value to the electric motor actually. With this, any possible meansering can be prevented from occurring.

7. 发明专利

JPH07137645A ELECTRIC REAR WHEEL STEERING DEVICE 失效
公开(公告)号：JPH07137645A
公开(公告)日：1995-05-30
申请号：JP31413993
申请日：1993-11-19
申请人： KAYABA INDUSTRY CO LTD
发明人： KATA KATSUKUNI , OTSUKA JOJI , OHIRA MASASHI
IPC分类号： B62D6/00 , B62D5/04 , B62D5/07 , B62D7/14
摘要： PURPOSE:To limit a rear wheel steering angle at the time of high speed, to release restriction at the time of low speed, to reduce the number of part items by way of eliminating an electromagnetic solenoid and to prevent abnormal behavior by large steering angle steering at the time of high speed due to an erroneous motion by pulling and inserting a pin for rack steering angle limitation for steering force transmission. CONSTITUTION:A pin 3 is pushed into a groove part 15 of a rack 1 through a plunger 4 by spring force of a plunger spring 5 in a pin actuation mechanism 2 in the state of high speed. Groove part width corresponding to a stroke required for steering force is provided on the groove part 15, and consequently small steering angle steering of a rear wheel is carried out. When a front wheel is steered at a large steering angle in the state of low speed, high hydraulic pressure is generated by grounding of the front wheel, accordingly, the plunger 4 pushes the plunger spring 5, and the plunger 4 is separated from the rack 1. Then, the pin 3 is removed from the groove part 15 by spring force of a spring 6, restriction of rear wheel steering is released and large steering angle steering becomes possible. Hereby, a plunger switch 8 monitors movement of the plunger 4.

8. 发明专利

JPH06293268A ELECTRICALLY-DRIVEN POWER STEERING DEVICE 失效
公开(公告)号：JPH06293268A
公开(公告)日：1994-10-21
申请号：JP34514693
申请日：1993-12-21
申请人： KAYABA INDUSTRY CO LTD
发明人： KATA KATSUKUNI , SUO SHIRO
IPC分类号： B62D5/04 , B62D6/00 , B62D101/00 , B62D127/00 , F02N11/00
摘要： PURPOSE:To improve the reliability by performing operation of an electric motor of an electrically-driven power steering device by a starter motor, and mechanically performing action of converting one-way rotation of the starter motor in accordance at need for steering. CONSTITUTION:One end of a motor shaft of a starter motor 21 is connected to an engine 23, and also the other end is connected to a flexible shaft 27 through a clutch 25. In the flexible shaft, turning force is transmitted to a select gear 29. In a select gear mechanism, in accordance with need for steering, a direction of the turning force is converted, and it is transmitted to a pinion gear 3 of a steering mechanism 35. That is, in accordance with a direction of torque of manual steering force from a steering handle 1, the direction of the turning force is converted. In a controller 37, in accordance with a vehicle running condition signal of car speed or the like, on-off control is performed for the starter motor and clutch.

9. 发明专利

JPH06278637A CONTROLLER FOR POWER STEERING DEVICE 失效
公开(公告)号：JPH06278637A
公开(公告)日：1994-10-04
申请号：JP9073493
申请日：1993-03-25
申请人： KAYABA INDUSTRY CO LTD
发明人： KATA KATSUKUNI , NARUSE SHINJI
IPC分类号： B62D5/04 , B62D6/02
摘要： PURPOSE:To reduce hysteresis and friction feeling by determining return side assist gain lower than turn side assist gain which is determined by speed in the case of detecting return of the steering wheel and applying a corresponding electric current on an electric motor in a controller for a power steering device for performing power assist. CONSTITUTION:A steering wheel torque sensor 11 detects steering wheel torque so that a steering wheel torque signal T is input into a torque detection part 14. The torque detection part 14 judges the steering direction based on an absolute value of the input steering wheel torque signal T and seeks derivative by a return detection part 15 so as to judge whether it is turning or returning of the steering wheel. When it is judged as returning of the steering wheel, a computing part 16 determines return side assist gain lower than a turn side assist gain to be determined by speed V at that time and an electric current corresponding to that value is applied on an electric motor 9 so as to perform operation control.

10. 发明专利

JPH0584271B2 失效
公开(公告)号：JPH0584271B2
公开(公告)日：1993-12-01
申请号：JP25033985
申请日：1985-11-08
申请人： KAYABA INDUSTRY CO LTD
发明人： KOMAMURA SEIJI , SUZUKI KATSUHIRO , KATA KATSUKUNI , MURAYOSHI KOZO
IPC分类号： B62D6/02 , B62D5/26 , B62D6/00 , B62D7/14 , B62D7/15 , B62D101/00 , B62D113/00

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