JPS6291773U

JPS6291773U -

Info

Publication number: JPS6291773U
Application number: JP18417585U
Authority: JP
Priority date: 1985-11-29
Filing date: 1985-11-29
Publication date: 1987-06-11

Description

[Brief explanation of drawings]

第１図及び第２図は本考案の原理を示す油圧回
路図、第３図は本考案のパワーステアリングに係
る一部油圧回路図を含む断面図、第４図は第３図
の―線に沿う断面図、第５図は本考案の第２
実施例を示す断面図、第６図は第５図の―線
視図、第７図は第６図の―線に沿う断面図、
第８図は本考案の第３実施例を示す断面図、第９
図は本考案の第４実施例を示す断面図、第１０図
は第９図のＸ―Ｘ線に沿う断面図、第１１図は同
第４実施例における弁体の溝の展開図、第１２図
は本考案の第５実施例を示す断面図、第１３図は
第１２図の―線視図である。１０……油圧シリンダ装置、１２……ピストン
、１４Ａ，１４Ｂ……油室、１６Ａ，１６Ｂ……
油路、１８Ａ，１８Ｂ，２８Ａ，２８Ｂ，３０Ａ
，３０Ｂ，８６Ａ，８６Ｂ……弁装置、２０……
連動機構、２２……ロツド（ラツク）、２４，４
２……絞り、２６，４４……チエツク弁、３２，
６２，７１，８２，１１７……連動機構、８８…
…弁体。 Figures 1 and 2 are hydraulic circuit diagrams showing the principle of the present invention, Figure 3 is a sectional view including a partial hydraulic circuit diagram related to the power steering of the present invention, and Figure 4 is shown along the - line in Figure 3. The cross-sectional view along Fig. 5 is the second part of the present invention.
A cross-sectional view showing an embodiment, FIG. 6 is a view taken along the line - of FIG. 5, and FIG. 7 is a cross-sectional view taken along the line - of FIG.
FIG. 8 is a sectional view showing the third embodiment of the present invention;
The figure is a sectional view showing the fourth embodiment of the present invention, FIG. 10 is a sectional view taken along the line X--X in FIG. FIG. 12 is a sectional view showing a fifth embodiment of the present invention, and FIG. 13 is a view taken along the line -- in FIG. 12. 10... Hydraulic cylinder device, 12... Piston, 14A, 14B... Oil chamber, 16A, 16B...
Oil passage, 18A, 18B, 28A, 28B, 30A
, 30B, 86A, 86B... Valve device, 20...
Interlocking mechanism, 22...rod (rack), 24,4
2... Throttle, 26, 44... Check valve, 32,
62, 71, 82, 117... interlocking mechanism, 88...
...valve body.

Claims

[Scope of utility model registration request]

A hydraulic cylinder device for driving a steering mechanism includes a throttle arranged in each oil passage for supplying and discharging hydraulic oil to an oil chamber on both sides of a piston, and a flow passage with a large oil flow area arranged in parallel with the throttle, A valve device is provided between the increasing flow path and the throttle, and is arranged between the valve device and the steering mechanism, the valve device being able to select at least a mode in which the flow path becomes the increasing flow path or a mode in which the mode becomes the throttle, and the steering angle is set at a neutral position. A power steering system comprising: an interlocking mechanism that drives the valve device in a mode in which the valve device operates in a mode in which the valve device becomes the throttle when it is within a certain range around the center, and in a mode in which it becomes the increasing flow path when it exceeds the certain range. .