JPH0243771U

JPH0243771U -

Info

Publication number: JPH0243771U
Application number: JP9038088U
Authority: JP
Priority date: 1988-07-07
Filing date: 1988-07-07
Publication date: 1990-03-26

Description

[Brief explanation of drawings]

第１図は第２図の−線に沿つて見た本考案
の一実施例に係る後輪操舵装置の断面図、第２図
は本考案の一実施例に係る後輪操舵装置の一部破
断正面図、第３図は同装置の横断平面図、第４図
は第２図の−線に沿つて見た断面図、第５図
は前記実施例の変形例に係る第１図に対応する断
面図、第６図及び第８図は前記実施例の変形例に
係るホイールの特性図、第７図は同変形例に係る
ホイールの展開図である。符号の説明、ＦＳ……前輪操舵装置、ＦＷ１，
ＦＷ２……前輪、ＲＷ１，ＲＷ２……後輪、ＳＭ
……支持機構、ＣＭ……中立付勢機構、ＳＳ……
舵角比センサユニツト、１１……入力軸、１３…
…作動ロツド、１４……モータ、１６……ハウジ
ング、１８……回転部材、２２……第１支持体、
４６……第２支持体、４８……ピン、５２……ホ
イール、５２ｂ……歯、５２ｃ，５２ｄ……スト
ツパ部、５５……ウオーム、７１，７２……ピン
。 FIG. 1 is a cross-sectional view of a rear wheel steering device according to an embodiment of the present invention as seen along the - line in FIG. 2, and FIG. 2 is a part of a rear wheel steering device according to an embodiment of the present invention. 3 is a cross-sectional plan view of the device, FIG. 4 is a sectional view taken along the line - in FIG. 2, and FIG. 5 corresponds to FIG. 1 according to a modification of the above embodiment. 6 and 8 are characteristic diagrams of a wheel according to a modification of the above embodiment, and FIG. 7 is a developed view of a wheel according to the modification. Explanation of symbols, FS...Front wheel steering system, FW1,
FW2...Front wheel, RW1, RW2...Rear wheel, SM
...Support mechanism, CM...Neutral biasing mechanism, SS...
Steering angle ratio sensor unit, 11... Input shaft, 13...
...Operating rod, 14...Motor, 16...Housing, 18...Rotating member, 22...First support body,
46...Second support body, 48...Pin, 52...Wheel, 52b...Teeth, 52c, 52d...Stopper portion, 55...Worm, 71, 72...Pin.

Claims

[Scope of claim for utility model registration] (1) A steering angle provided in a rear wheel steering device that steers the rear wheels in conjunction with the steering of the front wheels, and that sets the steering angle ratio of the rear wheels to the front wheels according to the rotational position. a ratio setting member, a driving force generating means for generating a rotational driving force, and a driving force generating means provided between the driving force generating means and the steering angle ratio setting member, and comprising a drive gear and a driven gear. In a steering angle ratio setting mechanism for a front and rear wheel steered vehicle, the steering angle ratio setting mechanism includes a gear mechanism that decelerates the rotational movement of the driven gear and transmits the rotational motion to the steering angle ratio setting member. A steering angle ratio setting mechanism for a front and rear wheel steered vehicle, characterized in that a stopper portion is provided for limiting the amount of rotation of the driven gear within a predetermined range. (2) A steering angle ratio setting member that is provided in a rear wheel steering device that steers the rear wheels in conjunction with the steering of the front wheels, and that sets the steering angle ratio of the rear wheels to the front wheels according to the rotational position, and a rotational drive. a driving force generating means for generating a force, and a drive gear and a driven gear provided between the driving force generating means and the steering angle ratio setting member, and reducing rotational motion from the driving force generating means to reduce the rotational motion from the driving force generating means. In a steering angle ratio setting mechanism for a front and rear wheel steered vehicle comprising a gear mechanism that transmits information to a steering angle ratio setting member, meshing with the drive gear is achieved by gradually changing the tooth shape of the driven gear in a range of a predetermined angle or more. A steering angle ratio setting mechanism for a front and rear wheel steered vehicle characterized by gradually tightening the steering angle ratio.