JPH01168366U

JPH01168366U -

Info

Publication number: JPH01168366U
Application number: JP6595588U
Authority: JP
Priority date: 1988-05-19
Filing date: 1988-05-19
Publication date: 1989-11-28

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例を示す概略構成図、
第２図は減衰力可変のシヨツクアブソーバの概略
を示す部分断面図、第３図はステツプモータ取り
付け用のブラケツトを示す斜視図、第４図はピス
トンロツド先端部を示す部分斜視図、第５図はス
テツプモータを示す斜視図、第６図は第２図にお
ける―線断面図、第７図はステツプモータの
概略を示す軸方向の断面図、第８図は第７図にお
ける―線断面図、第９図はロータリーバルブ
を示す軸方向の断面図、第１０図はロータリーバ
ルブのスリツト溝及びピストンロツドのオリフイ
ス穴を説明するための斜視図、第１１図は制御装
置の構成を示すブロツク図、第１２図は後輪操舵
用モータ駆動回路の構成を示す回路図、第１３図
はステツプモータ駆動回路を示す回路図、第１４
図はマイクロコンピユータ内で実行される処理手
順を示したフローチヤート、第１５図乃至第１８
図はそれぞれ異常検出処理１〜４の処理手順を示
すフローチヤート、第１９図は従来例を示す概略
構成図である。１……後輪操舵装置（舵角可変機構）、２……
タイロツド、２ｂ……後輪舵角センサ、３……ボ
ールジヨイント、４……ナツクルアーム、５……
後輪、６……ボールナツト、７ａ……モータ温度
センサ、８……減速機構、１０……コイルスプリ
ング（付勢手段）、１１……シヨツクアブソーバ
（減衰機構）、１２……制御装置、１３……前輪
舵角センサ、１４……車速センサ。 FIG. 1 is a schematic configuration diagram showing an embodiment of the present invention;
Fig. 2 is a partial sectional view schematically showing a shock absorber with variable damping force, Fig. 3 is a perspective view showing a bracket for mounting the step motor, Fig. 4 is a partial perspective view showing the tip of the piston rod, and Fig. 5 is a partial sectional view showing the outline of the shock absorber with variable damping force. FIG. 6 is a perspective view showing the step motor; FIG. 6 is a sectional view taken along the line ``-'' in FIG. 2; FIG. 7 is an axial sectional view schematically showing the step motor; FIG. 9 is an axial cross-sectional view showing the rotary valve, FIG. 10 is a perspective view for explaining the slit groove of the rotary valve and the orifice hole of the piston rod, FIG. 11 is a block diagram showing the configuration of the control device, and FIG. The figure is a circuit diagram showing the configuration of a rear wheel steering motor drive circuit, Figure 13 is a circuit diagram showing a step motor drive circuit, and Figure 14 is a circuit diagram showing the configuration of a motor drive circuit for rear wheel steering.
The figures are flowcharts showing the processing procedures executed within the microcomputer, Figures 15 to 18.
The figures are flowcharts showing the processing procedures of abnormality detection processes 1 to 4, respectively, and FIG. 19 is a schematic configuration diagram showing a conventional example. 1... Rear wheel steering device (variable steering angle mechanism), 2...
Tie rod, 2b... Rear wheel steering angle sensor, 3... Ball joint, 4... Knuckle arm, 5...
Rear wheel, 6...Ball nut, 7a...Motor temperature sensor, 8...Deceleration mechanism, 10...Coil spring (biasing means), 11...Shock absorber (damping mechanism), 12...Control device, 13... ...Front wheel steering angle sensor, 14...Vehicle speed sensor.

Claims

[Scope of utility model registration request]

a variable steering angle mechanism that generates a steering angle to the wheels; a biasing means that biases the variable steering angle mechanism toward a position where the wheels move straight; and a damping force that is responsive to the steering speed of the wheels. a damping mechanism capable of variable damping force generated in the variable steering angle mechanism; an abnormality detection means for detecting an abnormality in the variable steering angle mechanism; A steering angle control device for a vehicle, comprising: damping force control means for increasing the damping force of the mechanism.