JPH01168365U

JPH01168365U -

Info

Publication number: JPH01168365U
Application number: JP6515088U
Authority: JP
Priority date: 1988-05-19
Filing date: 1988-05-19
Publication date: 1989-11-28

Description

[Brief explanation of drawings]

第１図は本考案の一実施例を示す斜視図、第２
図は第１図の可変機構の構成及び動作を示す図、
第３図及び第４図は第１図の可変機構の動作を示
す図で、第３図はギヤ比δを小さくする時の動作
を示す図、第４図はギヤ比δを大きくする時の動
作を示す図、第５図は本考案の操舵装置における
サンギヤ回転数（Ｎｓ）とプラネタリギヤ公転数
（Ｎｃ）との関係を車速及び操舵状態の異なる運
転条件別に示したグラフである。１……ハンドル、２……ステアリングギヤボツ
クス、３……可変機構、４……上部ステアリング
シヤフト、５……サンギヤ、６……プラネタリギ
ヤ、７……下部ステアリングシヤフト、８……プ
ラネタリギヤ支持部材、９……リングギヤ、１０
ａ，１０ｂ……油圧シリンダ、１１……ピストン
、１２……ばね、１３……スピンドル、１４……
自転軸。 Fig. 1 is a perspective view showing one embodiment of the present invention;
The figure shows the configuration and operation of the variable mechanism in Figure 1;
Figures 3 and 4 are diagrams showing the operation of the variable mechanism in Figure 1. Figure 3 is a diagram showing the operation when decreasing the gear ratio δ, and Figure 4 is a diagram showing the operation when increasing the gear ratio δ. FIG. 5, which is a diagram showing the operation, is a graph showing the relationship between the sun gear rotation speed (Ns) and the planetary gear revolution speed (Nc) in the steering system of the present invention under different operating conditions such as vehicle speed and steering state. DESCRIPTION OF SYMBOLS 1... Handle, 2... Steering gear box, 3... Variable mechanism, 4... Upper steering shaft, 5... Sun gear, 6... Planetary gear, 7... Lower steering shaft, 8... Planetary gear support member, 9 ...Ring gear, 10
a, 10b...Hydraulic cylinder, 11...Piston, 12...Spring, 13...Spindle, 14...
rotation axis.

Claims

[Scope of utility model registration request]

In a vehicle steering system in which a steering wheel and a steering gear box are connected via a steering shaft, the upper steering wheel is divided into an upper steering shaft and a lower steering shaft in the middle of the steering shaft, and one end is connected to the steering wheel. a sun gear provided at the other end of the shaft; a planetary gear that meshes with the sun gear and revolves around its outer periphery; and a lower steering shaft that rotatably supports the planetary gear and whose lower end is connected to the steering gear box. a planetary gear support member coupled to the other end; a ring gear disposed concentrically with the sun gear and meshing with the planetary gear through internal teeth; and a drive means for rotating the ring gear concentrically with the rotation axis of the sun gear. A steering device comprising: a variable mechanism for controlling the rotation of the ring gear with respect to the revolution of the planetary gear by the driving means to change the ratio between the revolution speed of the planetary gear and the revolution speed of the sun gear.