JPH0256901U

JPH0256901U -

Info

Publication number: JPH0256901U
Application number: JP13505488U
Authority: JP
Priority date: 1988-10-18
Filing date: 1988-10-18
Publication date: 1990-04-24

Description

[Brief explanation of drawings]

第１図は本考案の実施例サージレス弁の概略断
面図とその関連油圧回路図、第２図は第１図のサ
ージレス弁の作動を示すそれぞれの図、第３図は
第１図のサージレス弁をＪＩＳ記号で示す油圧回
路図、第４図は従来のサージレス弁（クロスオー
バロードリリーフ弁）を示す油圧回路図を示す。１…本体、２…スプール、３，３′…スプリン
グ、４，４′…カバー、５，５′…スプリング受
け、７…アクチユエータ、１１，１１′…通路、
１２，１２′…油室、１５，１５′…油路、１６
…環状溝、１７…段部、１８…穴、１９，１９′
…大径穴、２０…サージレス弁、２１…ねじ、２
２…スプール。 Fig. 1 is a schematic sectional view of the surgeless valve according to the present invention and its related hydraulic circuit diagram, Fig. 2 is a diagram showing the operation of the surgeless valve shown in Fig. 1, and Fig. 3 is the surgeless valve shown in Fig. 1. Fig. 4 shows a hydraulic circuit diagram showing a conventional surgeless valve (crossover load relief valve). 1... Main body, 2... Spool, 3, 3'... Spring, 4, 4'... Cover, 5, 5'... Spring receiver, 7... Actuator, 11, 11'... Passage,
12, 12'...Oil chamber, 15, 15'...Oil passage, 16
...Annular groove, 17...Step, 18...Hole, 19, 19'
...Large diameter hole, 20...Surgeless valve, 21...Screw, 2
2...Spool.

補正昭６３．１２．２８図面の簡単な説明を次のように補正する。明細書第１４頁下から３行目の「２…スプール
」を「２…ランド部」に補正する。Amendment December 28, 1983 The brief description of the drawing is amended as follows. "2... Spool" on the third line from the bottom of page 14 of the specification is corrected to "2... Land portion".

Claims

[Claims for Utility Model Registration] (1) A spool that supports a land portion that fits into a hole provided in the main body, a pair of springs that press the land portion from both sides, and the outer side of the pair of springs and both ends of the spool. and a pair of covers fixed to the main body so as to be able to abut and abut each other and to form a pair of oil chambers between the main body, and the main body includes a pair of covers between each of the oil chambers and an external one. A surgeless valve comprising a pair of oil passages communicating with a passage to an actuator. (2) The cover is fixed to the main body so that the length of the spring in the axial direction can be adjusted, the oil passage is provided with a throttle, and the oil passage is provided with a throttle inside the hole that fits with the land portion. 2. The surgeless valve according to claim 1, further comprising an annular groove having a width narrower than the width of the land portion. (3) The hole in the main body is provided with large diameter holes on both sides so as to form a step part leaving a fitting part with the land part, and a spring receiver is interposed between the spring and the step part. 3. The surgeless valve according to claim 1, wherein the land portion is provided with a symmetrical taper or notch when viewed from the center.