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11. 发明专利

JPH06127422A STEERING DEVICE FOR VEHICLE 失效
公开(公告)号：JPH06127422A
公开(公告)日：1994-05-10
申请号：JP28024392
申请日：1992-10-19
申请人： TOYOTA MOTOR CORP
发明人： OIKAWA AYA
IPC分类号： B62D3/12 , B62D7/08
摘要： PURPOSE:To provide a steering device for vehicle constituted by arranging a rack bar in the lateral direction in rear of a power train such as an engine and a transmission, and of which the operation angle of a steering wheel can be sufficiently insured and variation of steering angle against external force can be minified. CONSTITUTION:This steering device for vehicle is constituted to be provided with a rack bar 11 which is arranged in the lateral direction of the vehicle on the part position displaced in the front and rear direction of the vehicle from the axis of a steering wheel 60 and moved in the lateral direction of the vehicle by steering operation, a first link 21 of which one end is connected to a body 40 on the axis side of the rack bar 11, a second link 22 of which one end is connected to the rack bar 11 and the other end is connected to the other end of the first link 21, and a third link 23 of which one end is connected to a knuckle arm 50 and the other end is connected to the middle part of the first link 21.

12. 发明专利

JPH0999719A REAR WHEEL SUSPENSION DEVICE FOR VEHICLE 失效
公开(公告)号：JPH0999719A
公开(公告)日：1997-04-15
申请号：JP26181195
申请日：1995-10-09
申请人： TOYOTA MOTOR CORP
发明人： OIKAWA AYA
IPC分类号： B60G9/04
摘要： PROBLEM TO BE SOLVED: To simplify a structure, and reduce an installing space by connecting one end parts of first and second support means to support lateral force to wheel carriers. SOLUTION: A rear wheel suspension device 10 is composed of wheel carriers 11 and 12, a first connecting arm 13, a second connecting arm 14, a first support link 15, a second support link 16 or the like. The first and second support links 15 and 16 are connected to the first and second connecting arms 13 and 14. These respective support links 15 and 16 are arranged, and a link mechanism composed of the wheel carriers 11 and 12 and the first and second connecting arms 13 and 14 is formed as a limited chain, and is composed so as to be able to receive vertical directional force and lateral directional force. When the first and second support links 15 and 16 are arranged, lateral rigidity of the rear wheel suspension device 10 is improved, and even if lateral force acts according to the turning direction, particularly at turning time or the like, lateral directional displacement can be regulated.

13. 发明专利

JPH092037A REAR WHEEL SUSPENSION DEVICE FOR VEHICLE 失效
公开(公告)号：JPH092037A
公开(公告)日：1997-01-07
申请号：JP14780495
申请日：1995-06-14
申请人： TOYOTA MOTOR CORP
发明人： OIKAWA AYA
IPC分类号： B60G9/02
摘要： PURPOSE: To improve stability of a vehicle and control stability, concerning a rear suspension device for vehicle having similar construction to a torsion beam axle type suspension. CONSTITUTION: This rear suspension device for vehicle is provided with wheel carriers 11, 12 constituted so that the one-side ends are connected to a vehicle body 18 and wheels 20 are supported with the vicinity positions of the other ends, a pair of connecting arms 13, 14 separately arranged upper and lower and constituted so that the wheel carriers 11, 12 arranged right and left are connected together through them, and connecting links 15, 16 constituted so that one-side ends are connected to the connecting arms 13, 14 and the other end parts are connected to the vehicle body 18. In addition the connection positions of the end parts on the connecting member side offset from the axes Y1, Y2 on the connecting arms 13, 14 by a fixed distance. The connecting links 15, 16 are arranged right and left symmetrically about the vehicle center axis Xp between.

14. 发明专利

JPH08197921A SUSPENSION DEVICE FOR VEHICLE 失效
公开(公告)号：JPH08197921A
公开(公告)日：1996-08-06
申请号：JP8252795
申请日：1995-04-07
申请人： TOYOTA MOTOR CORP
发明人： OIKAWA AYA
IPC分类号： B60G3/20
摘要： PURPOSE: To secure the layout space of other components such as a fuel tank and an exhaust system in a suspension device for a vehicle supporting a wheel carrier by plural arms. CONSTITUTION: A wheel carrier 11 is supported by at least one A-arm 12, and I-arm type toe control arm 13 and upper arm 14. The body fitting side end part 23 of the A-arm 12 is extended frontward of a vehicle so as to be fitted to a body. The body fitting position of the body fitting side other end part 24 of the A-arm 12, and the body side fitting positions of the respective linear arms 13, 14 are intensively disposed in the rear position of an axle and in proximity to one another from the top view.

15. 发明专利

JPH07156623A INDEPENDENT SUSPENSION TYPE REAR SUSPENSION 失效
公开(公告)号：JPH07156623A
公开(公告)日：1995-06-20
申请号：JP33984393
申请日：1993-12-07
申请人： TOYOTA MOTOR CORP
发明人： OIKAWA AYA
IPC分类号： B60G3/20
摘要： PURPOSE:To enhance durability, and concurrently facilitate tuning for the spring constant of a rubber bush for a pivotal support section by simplifying the constitution of the pivotal support section at the front end of a trailing arm in a suspension equipped with the trailing arm and a plurality of traverse arms. CONSTITUTION:The device is furnished with a carrier 10 supporting a wheel 12 rotatably around a rotating axial line, a trailing arm 14, an upper arm 16 and with a lower arm 18. The rear end of the trailing arm 14 is connected to the carrier in such a way that it can be pivotally moved around an axial line 26 extended in the vertical direction, the carrier is pivotally moved around the axial line 26 relatively with respect to the rear end of the trailing arm as the wheel bounds or rebounds, and change in toe and change in camber for the wheel are mainly controlled by the upper arm.

16. 发明专利

JPH05131826A LONGITUDINAL COMPLIANCE CONTROL DEVICE FOR SUSPENSION 失效
公开(公告)号：JPH05131826A
公开(公告)日：1993-05-28
申请号：JP32258491
申请日：1991-11-11
申请人： TOYOTA MOTOR CORP
发明人： OIKAWA AYA
IPC分类号： B60G7/02 , B60G17/015 , B60G17/027 , F16F13/00 , F16F13/14
摘要： PURPOSE:To prevent unnecessary control of longitudinal compliance resulted from behavior of a vehicle body by stopping switching-over of a longitudinal compliance setting means for front wheel from low to high condition for a specified period after the longitudinal compliance setting means for front and rear wheels is controlled in high condition. CONSTITUTION:If front wheels pass over a protrusion, on the road surface, etc., with longitudinal compliance of front and rear wheel suspensions set in ordinary low conditions, an opening and closing valve at the front wheel is opened and its condition is held for Tf hour. Also the longitudinal compliance of the front wheel suspension is set high from a time point t0 to t1 and the spring characteristic in longitudinal direction is softened. At a time point t3 immediately before wheels pass over the protrusion, etc., the opening and closing valve at the rear wheel is opened and its condition is held for tr hour. Then the longitudinal compliance of the rear wheel suspension is set high from a time point t3 to t6 and the spring characteristic in longitudinal direction is softened. Thus switching-over of the front wheels from low to high is prevented securely during the time t2 to t4 or t5 to t7.

17. 发明专利

JPH06330975A STRUT TYPE SUSPENSION 失效
公开(公告)号：JPH06330975A
公开(公告)日：1994-11-29
申请号：JP11613693
申请日：1993-05-18
申请人： TOYOTA MOTOR CORP
发明人： OIKAWA AYA
IPC分类号： B60G3/28 , B60G15/06 , B60G17/015 , F16F9/32
摘要： PURPOSE:To reduce an overall height by shortening the size of a shock absorber, in a strut type suspension to ensure a part of rigidity demanded by a suspension by means of the shock absorber. CONSTITUTION:A bound stopper 24 and a piston rod 26 provided at one end with a piston 25 are secured to the closed port end 22a of an outer cylinder 22. An inner cylinder 27 which is slid over the inner periphery of the outer cylinder 22 and over the inner periphery of which the piston 25 is slid is inserted through the opening end 27b side into the outer cylinder 22. A rod guide 28 is fixed in a position offset from the opening end 27a side by a given length L7 from the opening end 27a of the inner cylinder 27. The length L7 is a part of a stroke L5 at a necessary bond period and a part of a distance L21+L22+L4 demanded to counteract with bending moment.

18. 发明专利

JPH06127421A STEERING DEVICE FOR VEHICLE 失效
公开(公告)号：JPH06127421A
公开(公告)日：1994-05-10
申请号：JP28023892
申请日：1992-10-19
申请人： TOYOTA MOTOR CORP
发明人： OIKAWA AYA
IPC分类号： B62D3/12 , B62D7/08
摘要： PURPOSE:To provide a steering device for vehicle constituted by arranging a rack bar in the lateral direction in rear of a power train such as an engine and a transmission, and of which the operation angle of a steering wheel can be sufficiently insured and variation of steering angle against external force can be minified. CONSTITUTION:This steering device for vehicle is provided with a rack bar 11 which is arranged in the lateral direction of the vehicle on the part position displaced in the front and rear direction of the vehicle from the axis of a steering wheel 60 and moved in the lateral direction of the vehicle by steering operation, and a rotation transmitting means 23 which is fitted to a body 40 between the end part of the rack bar 11 and the steering wheel 60 and can be rotated around the axis L in parallel with the center axis of the vehicle in the front and rear direction but not moved in the axial direction. Further, this is constituted to be provided with a first link 21 connecting together the rotation transmitting means 23 and the rack bar 11, and a second link connecting together the rotation transmitting means 23 and a knuckle arm 50.

19. 发明专利

JPH0640226A DOUBLE ARM TYPE SUSPENSION FOR VEHICLE 失效
公开(公告)号：JPH0640226A
公开(公告)日：1994-02-15
申请号：JP21550392
申请日：1992-07-21
申请人： TOYOTA MOTOR CORP
发明人： NISHIO MASAHIRO , OIKAWA AYA
IPC分类号： B60G3/18
摘要： PURPOSE:To reduce tread change and camber change generated in association with the bound and rebound of a wheel without lengthening suspension arms so as to heighten the setting freedom of an anti-diving rate. CONSTITUTION:A double arm type suspension for a vehicle has a pair of body side arms 26, 28 extended in the longitudinal direction of a vehicle while being pivotally supported at a body in such a way as to be pivotally movable around axes 30, 32 extended in the cross direction of the vehicle at one end, and a pair of wheel side arms 52, 54 pivotally fixed, at the inner ends thereof, to the other ends of the corresponding body side arms 26, 28 in such a way as to be pivotally movable around pivot axes 48, 50, and pivotally fixed, at the outer ends thereof, to a carrier 10. The respective body side arms or wheel side arms have mutually different length, and two pivot axes are extended vertically when a wheel 12 is in the neutral position.

20. 发明专利

JPH04175534A ATTENUATION FORCE VARIABLE TYPE VIBRATION ATTENUATOR 失效
公开(公告)号：JPH04175534A
公开(公告)日：1992-06-23
申请号：JP28255990
申请日：1990-10-20
申请人： TOYOTA MOTOR CORP
发明人： MURATA MASAHIRO , OIKAWA AYA
IPC分类号： F16F9/53
摘要： PURPOSE:To simplify circuit constitution and obtain a highly reliable low-cost attenuator by furnishing each electrode couple with such a shape that makes pressure differences different between upper and lower piston chambers at which electrically viscous fluid between each electrode couple becomes fluid. CONSTITUTION:When positive electric potential is applied to electrode plates 4a, 4c and 4e and negative electric potential is applied to a cylinder 2, electrode plates 4b and 4d, and a piston rod 1, the viscosity of ERF8 in flow passages 12a through 12f increases. This results in increase of resistance acting to a piston 15 sliding in the cylinder 2. As the resistance increases, a stress acting on the unit length of electrode couples in the flow passages 12a and 12b increases in comparison with the other flow passages because the effective confronting length La of the electrode couples in the flow passages 12a and 12b is smaller than that of the electrode couples in the other flow passages. Consequently, ERF8 becomes fluid beyond an yield shearing stress, and an attenuation characteristic shown between alpha and beta is obtained. As the pressure difference increases more, ERF8 becomes fluid in the flow passage 12c which is smaller in its length than the other passages except 12a and 12b, showing an attenuation characteristic between beta and gamma. This attenuation force characteristic further shows a trend of almost reaching a ceiling.

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