JPH01117978U - - Google Patents

Description

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本考案の第１実施例の４輪操舵車の後
輪操舵装置の全体構成を示す線図、第２図はその
警報動作手順を示すフローチヤート、第３図は同
じく第２実施例および第３実施例の全体構成を示
す線図、第４図は第２実施例の警報動作手順を示
すフローチヤート、第５図は第３実施例の警報動
作手順を示すフローチヤートである。 １０……パワーステアリング、１１……油圧ポ
ンプ、１２……リザーバ、１３……ハンドル、１
４Ｌ，１４Ｒ……前輪、１５〜１８……油路、１
９Ｌ，１９Ｒ……後輪、２０……切換弁、２１…
…ソレノイド、２２……車速センサ、２３Ｌ，２
３Ｒ……油圧センサ、３０……制御装置、３１…
…信号検出回路、４０……警報ブザー、５０……
パワーシリンダ。 FIG. 1 is a diagram showing the overall configuration of the rear wheel steering device for a four-wheel steering vehicle according to the first embodiment of the present invention, FIG. 2 is a flowchart showing the alarm operation procedure, and FIG. FIG. 4 is a flowchart showing the alarm operation procedure of the second embodiment, and FIG. 5 is a flowchart showing the alarm operation procedure of the third embodiment. 10...Power steering, 11...Hydraulic pump, 12...Reservoir, 13...Handle, 1
4L, 14R...Front wheel, 15-18...Oil path, 1
9L, 19R...Rear wheel, 20...Switching valve, 21...
... Solenoid, 22 ... Vehicle speed sensor, 23L, 2
3R...Oil pressure sensor, 30...Control device, 31...
...Signal detection circuit, 40...Alarm buzzer, 50...
power cylinder.

Claims (1)

【実用新案登録請求の範囲】 前輪の操舵アシスト圧を発生するパワーステア
リングと、このパワーステアリングと油路により
切換弁を介して接続され前記アシスト圧に基づき
後輪を操舵するパワーシリンダと、車速を検出す
る車速検出手段と、前記車速に基づき前記切換弁
を制御する制御手段とを具える４輪操舵車の後輪
操舵装置において、 車速が所定値を超えた場合に、前記切換弁の切
換位置を検出する弁切換位置検出手段と、 警報装置を、前記弁切換位置検出手段から得た
切換位置信号が逆相転舵を示す場合に作動させ、
後輪非転舵を示す場合に不作動とする制御を行う
警報制御手段とを具えることを特徴とする４輪操
舵車の後輪操舵装置。[Scope of Utility Model Registration Claim] A power steering system that generates steering assist pressure for the front wheels, a power cylinder that is connected to the power steering system via a switching valve by an oil passage and that steers the rear wheels based on the assist pressure, and a power cylinder that controls the vehicle speed. In a rear wheel steering device for a four-wheel steering vehicle, comprising a vehicle speed detection means for detecting a vehicle speed, and a control means for controlling the switching valve based on the vehicle speed, when the vehicle speed exceeds a predetermined value, the switching position of the switching valve is determined. a valve switching position detection means for detecting the valve switching position; and an alarm device is activated when the switching position signal obtained from the valve switching position detection means indicates reverse phase steering;
1. A rear wheel steering device for a four-wheel steered vehicle, comprising: an alarm control means that performs control to be inactivated when the rear wheels are not steered.