JPS61107688U

JPS61107688U -

Info

Publication number: JPS61107688U
Application number: JP19338384U
Authority: JP
Priority date: 1984-12-20
Filing date: 1984-12-20
Publication date: 1986-07-08
Also published as: JPH0224379Y2

Description

[Brief explanation of the drawing]

第１図は乗用作業機の破断側面図、第２図は操
舵系の平面図、第３図は要部拡大側面図、第４図
は同平面図、第５図は線図的に示した要部平面図
、第６図はエキスターナルギヤの中心点に対する
ジヨイントピンの中心点の座標を示す線図、第７
図はピニオンの中心点に対するジヨイントピンの
中心点の相対座標を示す線図、第８図は外転サイ
クロイドによる軌跡図、第９図はその後輪転舵特
性図、第１０図は第２実施例を示す要部拡大側面
図、第１１図は同平面図、第１２図は線図的に示
した要部平面図、第１３図は内転サイクロイドに
よる軌跡図、第１４図はその後輪転舵特性図であ
る。尚、図面中１１は前輪、１２は後輪、２３は前
輪用タイロツド、２８は後輪用タイロツド、３１
はハンドル、３４はギヤボツクス、３５はピニオ
ン、３６はセクタギヤ、３７は支軸、４１はレバ
ー、４６は支軸、４７はアーム、５１はリンク、
５３はクランク軸、５４は操舵入力側の軸部、５
５は操舵出力側の軸部たるジヨイントピン、５６
はプラネタリピニオン、５７はエキスターナルギ
ヤ、１５７はインターナルギヤである。 Figure 1 is a cutaway side view of the riding work machine, Figure 2 is a plan view of the steering system, Figure 3 is an enlarged side view of the main parts, Figure 4 is the same plan view, and Figure 5 is a diagrammatic representation. A plan view of the main part, Figure 6 is a diagram showing the coordinates of the center point of the joint pin with respect to the center point of the external gear, and Figure 7 is a diagram showing the coordinates of the center point of the joint pin with respect to the center point of the external gear.
The figure is a line diagram showing the relative coordinates of the center point of the joint pin with respect to the center point of the pinion, Figure 8 is a locus diagram of an epicycloid, Figure 9 is a rear wheel steering characteristic diagram, and Figure 10 shows the second embodiment. Fig. 11 is an enlarged side view of the main part, Fig. 11 is a plan view of the same, Fig. 12 is a diagrammatic plan view of the main part, Fig. 13 is a locus diagram due to an adduction cycloid, and Fig. 14 is a rear wheel steering characteristic diagram. be. In the drawing, 11 is a front wheel, 12 is a rear wheel, 23 is a tie rod for the front wheel, 28 is a tie rod for the rear wheel, and 31 is a tie rod for the rear wheel.
is a handle, 34 is a gearbox, 35 is a pinion, 36 is a sector gear, 37 is a support shaft, 41 is a lever, 46 is a support shaft, 47 is an arm, 51 is a link,
53 is a crankshaft, 54 is a shaft portion on the steering input side, 5
5 is a joint pin which is the shaft part on the steering output side, 56
is a planetary pinion, 57 is an external gear, and 157 is an internal gear.

Claims

[Scope of Claim for Utility Model Registration] (1) A lever that swings in conjunction with the steering wheel is disposed at the front of the vehicle body, and an arm that connects and supports tie rods for the left and right rear wheels is pivoted at the intermediate portion, and the arm In a vehicle steering system, one half of the lever or the arm is connected to the lever by a link, and one of the levers or the arm is connected to the link by a crankshaft. A pinion is provided on the shaft portion on the steering input side of the crankshaft, and an external gear or internal gear with the shaft center as the pivot point of the lever or arm is fixed to the vehicle body to mesh with the pinion. ,
The steering device for front and rear wheels is further characterized in that the axis of the shaft portion on the steering output side of the crankshaft is located inside a pitch that includes a reference pitch circle of the pinion. (2) In the neutral steering state, the pinion and
External gear or internal gear,
A steering device for front and rear wheels according to claim 1, wherein the positional relationship of each axis with respect to the shaft portion on the steering output side of the crankshaft is initially set as indicated by a○ or b○ below. a○ Align the axis of the shaft on the steering output side of the crankshaft with the straight line connecting the pinion and external gear axes. b○ Align the axis of the pinion with the straight line connecting the shaft on the steering output side of the crankshaft and the axis of the internal gear.