JPS58190737U

JPS58190737U - detent device

Info

Publication number: JPS58190737U
Application number: JP8883682U
Authority: JP
Inventors: 平沢　喜義
Original assignee: 日立建機株式会社
Priority date: 1982-06-16
Filing date: 1982-06-16
Publication date: 1983-12-19

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図は従来のデテント装置およびデテントレバーをそ
なえた操作レバーにより制御する油圧駆動回路を示す図
、第２図は第１図のデテント装置を示す拡大断面側面図
、第３図はこの考案によるデテント装置をそなえた操作
レバーにより制御する油圧駆動回路を示す図、第４図、
第５図はこの考案のデテント装置の一実施態様を示す制
置側面図で、第４図はエンジンが駆動している時の状態
、第５図はエンジンが停止している時の状態を表わす。１・・・・・・操作レバー、２・・・・・・ロッド、３
・・・・・・デテントレバー、３ｎ、　３１．３ｒ・・
・・・・Ｖ溝、５−−−−−−エンジン、６・・・・−
・・可変容量杉油圧ポンプ、７・・・・・・油圧モータ
、８・・・・・・デテント装置、８ａ・・・・・・ケー
ス、８ｂ・・・・・・スチールボール、８ｄ・・・・・
・ピストン、８ｅ・・・・・・制止段部、８ｆ・・・・
・・圧油室、９・・・・・・補給油圧ポンプ、１０・・
・・・・吸込管路、ＩＩＡ、ＩＩＢ・・・・・・逆止弁
、１２・・・・・・油タンク、１４・・・・・・リリー
フ弁、１５・・・・・・配管、１６．１７・・・・・・
閉回路。 −“」３　ａ１０　ヌｔ　　　　　層−シ　　　　　ｌ（）Fig. 1 is a diagram showing a conventional detent device and a hydraulic drive circuit controlled by an operating lever equipped with a detent lever, Fig. 2 is an enlarged cross-sectional side view showing the detent device of Fig. 1, and Fig. 3 is a diagram based on this invention. FIG. 4 is a diagram showing a hydraulic drive circuit controlled by an operating lever equipped with a detent device;
Fig. 5 is a side view showing one embodiment of the detent device of this invention, Fig. 4 shows the state when the engine is running, and Fig. 5 shows the state when the engine is stopped. . 1... Operation lever, 2... Rod, 3
...Detent lever, 3n, 31.3r...
...V groove, 5------engine, 6------
...Variable capacity cedar hydraulic pump, 7...Hydraulic motor, 8...Detent device, 8a...Case, 8b...Steel ball, 8d... ...
・Piston, 8e...Stopping step, 8f...
...Pressure oil chamber, 9...Replenishment hydraulic pump, 10...
...Suction pipe line, IIA, IIB...Check valve, 12...Oil tank, 14...Relief valve, 15...Piping, 16.17...
closed circuit. -“” 3 a 10 layer -shi l ( )

Claims

[Scope of utility model registration request]

A detent device that holds the operating lever in a predetermined position by pressing a ball housed in a case into a groove formed in the detent lever that is linked to the operating lever.
A spring that presses the balls and a piston that compresses the spring are housed in a case, a side stop is provided in the case to stop the piston at a predetermined compression position of the spring, and a side stop is provided in the case to apply pressure oil to the piston. A detent device characterized in that a pressure oil chamber is connected to a discharge side of a pressure oil pump that is linked to a prime mover.