JPS6344881U

JPS6344881U -

Info

Publication number: JPS6344881U
Application number: JP13982686U
Authority: JP
Priority date: 1986-09-11
Filing date: 1986-09-11
Publication date: 1988-03-25

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例を示すものであつて
第３図の―に沿つて見た後輪操舵装置の一部
破断外観図、第２図は本考案に係る前後輪操舵車
の全体を機能的に示す図、第３図は第２図の後輪
操舵装置の一部を表す破断図、第４図は第１図の
―に沿つて見た断面図、及び第５図は目標舵
角比の車速Ｖに対する特性を示す図である。符号の説明、Ａ……前輪操舵装置、Ｂ……後輪
操舵装置、Ｂ１……ステアリングリンク機構、Ｂ
２……制御バルブ装置、Ｂ３……パワーシリンダ
、Ｂ４……ステツプモータ、Ｂ５……歯車機構、
Ｃ……電気制御装置、ＦＷ１，ＦＷ２……前輪、
ＲＷ１，ＲＷ２……後輪、２３，２７，２７ａ，
４２，４７……ハウジング、２４……リレーロツ
ド、２８……出力軸、３１……トーシヨンバー、
３２……入力軸、４３，６１……ステー、４４…
…回転軸、４８，４９……平歯車、５１……デイ
スクプレート。 Fig. 1 shows an embodiment of the present invention, and is a partially cutaway external view of a rear wheel steering device taken along - in Fig. 3, and Fig. 2 shows a front and rear wheel steering vehicle according to the present invention. FIG. 3 is a cutaway view showing a part of the rear wheel steering device in FIG. 2, FIG. 4 is a sectional view taken along the line - in FIG. 1, and FIG. FIG. 3 is a diagram showing characteristics of target steering angle ratio with respect to vehicle speed V. FIG. Explanation of symbols, A...Front wheel steering device, B...Rear wheel steering device, B1...Steering link mechanism, B
2... Control valve device, B3... Power cylinder, B4... Step motor, B5... Gear mechanism,
C...Electric control device, FW1, FW2...Front wheel,
RW1, RW2... Rear wheel, 23, 27, 27a,
42, 47...Housing, 24...Relay rod, 28...Output shaft, 31...Torsion bar,
32...Input shaft, 43, 61...Stay, 44...
...Rotating shaft, 48, 49... Spur gear, 51... Disc plate.

Claims

[Scope of utility model registration request]

A relay rod that steers the left and right rear wheels connected to both ends according to axial displacement, and an input shaft and an output shaft that are coaxially connected to each other so as to be relatively rotatable by a torsion bar, and the two shafts form a predetermined angle with the relay rod. a control valve that is assembled to the housing of the relay rod and displaces the relay rod in the axial direction according to the rotation of the output end of the output shaft, and controls the supply and discharge of hydraulic oil according to the relative rotation of the two shafts; A rear wheel steering device for a front and rear wheel steered vehicle, comprising: a power cylinder that assists steering of left and right rear wheels according to the supply and discharge of the hydraulic oil; and a drive device that rotationally drives the input shaft; are fixed to the housing of the relay rod or the housing of the control valve device with a supporting member so that they are arranged in parallel to the control valve device, parallel to the input shaft, and protruding in the opposite direction to the relay rod. A front and rear wheel characterized by comprising a motor having a rotating shaft, and a gear mechanism including a first gear fixed to the tip of the rotating shaft and a second gear fixed to the input shaft and meshing with the first gear. Rear wheel steering device for wheel steering vehicles.