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1. 发明专利

JPH10297511A POWER STEERING DEVICE 失效
公开(公告)号：JPH10297511A
公开(公告)日：1998-11-10
申请号：JP14720897
申请日：1997-05-21
申请人： KAYABA INDUSTRY CO LTD
发明人： SUZUKI KATSUHIRO , HAGIHIRA SHINICHI , TSUKADA YOSHIYUKI , TAKAI MASASHI
IPC分类号： B62D5/083
摘要： PROBLEM TO BE SOLVED: To provide a power steering device which can improve neutral rigidity by applying a preset force and improve assembling property and productivity. SOLUTION: A power steering device which relatively rotates an input shaft 4 and an output shaft 2 by twisting a torsion bar 5 to apply an assist force according to the relative rotation has a spring housing room 9 made in a member rotated integrally with the output shaft 2 or the output shaft 2, a pair of spring bodies 13 disposed to sandwich the input shaft 2 disposed in the spring housing room 9, a first supporting part formed in the spring body 13, a second supporting part opposed to the first supporting part in a neutral state, and a ball or a roller 21 interposed between the first and second supporting parts. When the shafts 2, 4 are relatively rotated and the ball or the roller 21 is being separated from the first and second supporting parts, the ball or the roller 21 is rotated while bending the spring bodies 13.

2. 发明专利

JPH0880859A MOTOR-DRIVEN POWER STEERING DEVICE 失效
公开(公告)号：JPH0880859A
公开(公告)日：1996-03-26
申请号：JP24463894
申请日：1994-09-13
申请人： KAYABA INDUSTRY CO LTD
发明人： OHIRA MASASHI , TSUKADA YOSHIYUKI
IPC分类号： B62D5/04
摘要： PURPOSE: To provide a motor-driven power steering device which can prolong the life of an electric motor or a reduction gear, by bringing the electric motor into stop when the steering assistance is not necessary. CONSTITUTION: A motor switch 24 is incorporated on one between a housing and a movable body 21, and a switching member 34 for turning-ON/OFF the motor switch 24 is installed on the other, and when the movable body 21 shifts by a set quantity, the motor switch 24 is inputted, and an electric motor 7 is driven.

3. 发明专利

JPH1076961A POWER STEERING DEVICE 失效
公开(公告)号：JPH1076961A
公开(公告)日：1998-03-24
申请号：JP13285597
申请日：1997-05-07
申请人： KAYABA INDUSTRY CO LTD
发明人： SUZUKI KATSUHIRO , HAGIHIRA SHINICHI , TSUKADA YOSHIYUKI
IPC分类号： B62D5/083
摘要： PROBLEM TO BE SOLVED: To improve an assembling property by arranging a pair of spring members to hold both sides of an input shaft on an output shaft or a member integrally rotating with this output shaft and displaying preset force by spring force of this spring member. SOLUTION: An initial load, that is, preset force of spring members 13, 13 works on an input shaft 4. By this amount, neutral rigidity is improved, and steering safety at the time of rectilinear travelling is maintained. Thereafter, when a steering wheel is revolved and the input shaft 4 is, for example, rotated in the arrow direction, a ridge part in the rear in the rotating direction of the ridge parts 17, 17 formed on a border of a flat surface 12 and the other surface becomes a working point and force to crush works on the spring members 13, 13. As the spring members 13, 13 are made pressure contact with both sides of the input shaft 4, it is easy to keep left and right balance. As the left and right balance is improved in this way, no problem that steering reaction force differs left and right occurs, an assembling property is improved and rattling, etc., do not occur.

4. 发明专利

JPH10305778A POWER STEERING DEVICE 失效
公开(公告)号：JPH10305778A
公开(公告)日：1998-11-17
申请号：JP16190397
申请日：1997-06-04
申请人： KAYABA INDUSTRY CO LTD
发明人： SUZUKI KATSUHIRO , HAGIHIRA SHINICHI , TSUKADA YOSHIYUKI
IPC分类号： B62D5/083
摘要： PROBLEM TO BE SOLVED: To easily make compatible both centering of a shaft determining a relative position between an input/output shaft in a neutral condition and centering of a preset force giving mechanism. SOLUTION: In a power steering device formed in a constitution such that assist force in accordance with a relative rotational amount between an input/ output shaft 4, 2 connected by a torsion bar is given, and a spring storage chamber 9 integrally rotated with the output shaft 2 is provided, by spring force of a pair of spring members arranged so as to grip between both sides of the input shaft 4 in the spring storage chamber 9, the preset force is displayed, a spring receiving ring 25, which is a separate member from the output shaft 2 or a member integrally rotated with the output shaft 2, is provided, in the spring receiving ring 25, the spring storage chamber 9 and at least one insertion hole are provided, relating to the insertion hole, a fixed member 26 for fixedly positioning the spring receiving ring 25 and the output shaft 2 or a member integrally rotated with the output shaft 2 is inserted arranged, also between the fixed member 26 and the insertion hole, a fine adjustment means making fine adjustment possible of a fixed position is provided.

5. 发明专利

JPH092299A REAR WHEEL STEERING GEAR 失效
公开(公告)号：JPH092299A
公开(公告)日：1997-01-07
申请号：JP17149695
申请日：1995-06-14
申请人： KAYABA INDUSTRY CO LTD
发明人： TANAKA KEIICHI , TSUKADA YOSHIYUKI
IPC分类号： B62D5/04 , B62D7/14
摘要： PURPOSE: To improve reliability on failure by a large margin by providing a sub-motor separately from a main motor, and driving the sub-motor to steer rear wheels in case of the failure of the main motor. CONSTITUTION: At the time of a small steering angle at high speed, a solenoid 63 is excited to fit a stopper pin 65 into a recessed part 67 of a ball nut 57 so as to regulate rotation of the ball nut 57 and also to regulate movement of a shaft 53, thus preventing rear wheels from being steered large at the malfunctioning time of a main motor 69. Driving of this main motor 69 is controlled by an ECU 25, and the ball nut 57 is rotated by the main motor 69 to move the shaft and thereby to steer the rear wheels 7, 9. At the failure time of the main motor 69, an electromagnetic clutch 81 on the main motor 69 side is turned off, and then power supply of a sub-motor 85 is turned on, and an electromagnetic clutch 97 on the sub-motor 85 side is turned on to rotate the ball nut 57 by the sub-motor 85.

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