JPH0434574U

JPH0434574U -

Info

Publication number: JPH0434574U
Application number: JP7608490U
Authority: JP
Priority date: 1990-07-19
Filing date: 1990-07-19
Publication date: 1992-03-23

Description

[Brief explanation of the drawing]

第１図は、この考案の第１実施例における電磁
圧力制御弁の断面正面図、第２図は、この考案の
第２実施例における電磁圧力制御弁の断面正面図
、第３図は、従来の技術における電磁圧力制御弁
の断面正面図である。１……スプール弁、２……リニアソレノイド、
１０……スプールハウジング、１１……滑動孔、
１２……スプール、１３……ねじ栓、１４……大
径孔部、１５……第１環状溝、１６……第２環状
溝、１７……第３環状溝、１８……第４環状溝、
１９……第５環状溝、２０，３７……流体絞り、
２１……フイードバツク通路、２２……供給通路
、１６′，２２′……凹欠部、２３……出力通路
、２４，２５……ドレン通路、２６……先端小径
部、２７……第１ランド部、２８……第１環状溝
部、２９……第２ランド部、２９ａ……第２副ラ
ンド部、３０……第２環状溝部、３０ａ……第２
副環状溝部、３１……円錐体弁部、３１ａ……円
錐面、３２……第３ランド部、３３……ばね挿着
穴、３４，５０……圧縮コイルばね、３５……環
状溝部、３６……リリーフ弁、４０……第１ソレ
ノイドハウジング、４０ａ……ヨーク部、４１…
…フランジ部、４２……ソレノイド、４３……円
筒状突出部、４４……第２ソレノイドハウジング
、４５……スリーブ、４６……転がり軸受、４７
……弁棒、４８……プランジヤ、４９……中空穴
、Ａ……油圧作動部、Ｂ……ポンプ、Ｔ……タン
ク。 FIG. 1 is a cross-sectional front view of an electromagnetic pressure control valve according to a first embodiment of this invention, FIG. 2 is a cross-sectional front view of an electromagnetic pressure control valve according to a second embodiment of this invention, and FIG. 3 is a conventional It is a cross-sectional front view of the electromagnetic pressure control valve in the technique of . 1... Spool valve, 2... Linear solenoid,
10...Spool housing, 11...Sliding hole,
12... Spool, 13... Screw plug, 14... Large diameter hole, 15... First annular groove, 16... Second annular groove, 17... Third annular groove, 18... Fourth annular groove ,
19...Fifth annular groove, 20, 37...Fluid restrictor,
21... Feedback passage, 22... Supply passage, 16', 22'... Recessed portion, 23... Output passage, 24, 25... Drain passage, 26... Small diameter portion at the tip, 27... First land part, 28...first annular groove part, 29...second land part, 29a...second sub land part, 30...second annular groove part, 30a...second
Sub-annular groove part, 31... Conical valve part, 31a... Conical surface, 32... Third land part, 33... Spring insertion hole, 34, 50... Compression coil spring, 35... Annular groove part, 36 ...Relief valve, 40...First solenoid housing, 40a...Yoke part, 41...
...Flange portion, 42... Solenoid, 43... Cylindrical protrusion, 44... Second solenoid housing, 45... Sleeve, 46... Rolling bearing, 47
... Valve stem, 48 ... Plunger, 49 ... Hollow hole, A ... Hydraulic operation part, B ... Pump, T ... Tank.

Claims

[Scope of utility model registration request]

A valve body having a sliding hole through which an output passage, a drain passage, and a pressure oil supply passage communicate with each other, a spool fitted into the sliding hole so as to be slidable in the axial direction, and an actuating means for displacing the spool in the axial direction within the sliding hole. The spool corresponds to the output passage, the drain passage, and the pressure oil supply passage, and selectively throttles or shuts off the throttle opening between the output passage and the pressure oil supply passage depending on the axial position. The land portion formed to always communicate with the output passage and the drain passage may be selectively throttled or blocked, and a sliding hole may be provided between the drain passage and the output passage. A pressure control spool valve having a conical valve portion configured to abut against a valve seat portion of the pressure control spool valve.