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1. (WO2018038231) NEUTRAL VALVE, AND VALVE ASSEMBLY EQUIPPED WITH SAME
Latest bibliographic data on file with the International Bureau    Submit observation

Pub. No.: WO/2018/038231 International Application No.: PCT/JP2017/030424
Publication Date: 01.03.2018 International Filing Date: 24.08.2017
IPC:
F16K 11/07 (2006.01) ,F15B 11/00 (2006.01) ,F16H 61/4069 (2010.01) ,F16H 61/439 (2010.01)
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16
ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
K
VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
11
Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves; Arrangement of valves and flow lines specially adapted for mixing fluid
02
with all movable sealing faces moving as one unit
06
comprising only sliding valves
065
with linearly sliding closure members
07
with cylindrical slides
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
15
FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
B
SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
11
Servomotor systems without provision for follow-up action
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16
ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
H
GEARING
61
Control functions within change-speed- or reversing-gearings for conveying rotary motion
38
Control of exclusively fluid gearing
40
hydrostatic
4069
Valves related to the control of neutral, e.g. shut off valves
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16
ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
H
GEARING
61
Control functions within change-speed- or reversing-gearings for conveying rotary motion
38
Control of exclusively fluid gearing
40
hydrostatic
42
involving adjustment of a pump or motor with adjustable output or capacity
439
Control of the neutral position, e.g. by zero tilt rotation holding means
Applicants: KAWASAKI JUKOGYO KABUSHIKI KAISHA[JP/JP]; 1-1, Higashikawasaki-cho 3-chome, Chuo-ku, Kobe-shi, Hyogo 6508670, JP
Inventors: FUJII, Tomoyuki; --
Agent: PATENT CORPORATE BODY ARCO PATENT OFFICE; 3rd Fl., Bo-eki Bldg., 123-1, Higashimachi, Chuo-ku, Kobe-shi, Hyogo 6500031, JP
Priority Data:
2016-16605926.08.2016JP
Title (EN) NEUTRAL VALVE, AND VALVE ASSEMBLY EQUIPPED WITH SAME
(FR) VALVE NEUTRE ET ENSEMBLE À VALVE ÉQUIPÉ DE LADITE VALVE NEUTRE
(JA) ニュートラルバルブ、及びそれを備えるバルブアッセンブリ
Abstract:
(EN) A neutral valve according to the present invention comprises a spool that is inserted in a housing so as to be capable of movement in a prescribed direction and that moves between a neutral position at which a first port and a second port are connected via a valve passage, a first offset position which is on one side in the prescribed direction relative to the neutral position and at which the second port and the valve passage are disconnected, and a second offset position which is on the other side in the prescribed direction relative to the neutral position and at which the first port and the valve passage are disconnected. The spool has, on the outer peripheral section thereof, a first pressure receiving surface that is pressed to one side in the prescribed direction when subjected to fluid pressure from the first port, and a second pressure receiving surface that is pressed to the other side in the prescribed direction when subjected to fluid pressure from the second port. The housing has a first pressure chamber and a second pressure chamber that are at a distance from both the first port and the second port and to which the end parts of the spool in the prescribed direction are respectively positioned. The first pressure chamber and the second pressure chamber are connected to the valve passage via a communication passage.
(FR) Selon la présente invention, une valve neutre comprend une bobine qui est introduite dans un boîtier afin de pouvoir se déplacer dans une direction prescrite et qui se déplace entre une position neutre dans laquelle un premier orifice et un second orifice sont reliés par l'intermédiaire d'un passage de valve, une première position de décalage qui est sur un côté dans la direction prescrite par rapport à la position neutre et au niveau de laquelle le second orifice et le passage de valve sont déconnectés, et une seconde position de décalage qui est sur l'autre côté dans la direction prescrite par rapport à la position neutre, et au niveau de laquelle le premier orifice et le passage de valve sont déconnectés. La bobine possède, sur sa section périphérique externe, une première surface de réception de pression qui est comprimée sur un côté dans la direction prescrite lorsqu'elle est soumise à une pression de fluide à partir du premier orifice, et une seconde surface de réception de pression qui est comprimée vers l'autre côté dans la direction prescrite lorsqu'elle est soumise à une pression de fluide provenant du second orifice. Le boîtier possède une première chambre de pression et une seconde chambre de pression qui sont à une certaine distance aussi bien du premier orifice que du second orifice, et auxquelles les parties d'extrémité de la bobine sont respectivement positionnées dans la direction prescrite. La première chambre de pression et la seconde chambre de pression sont reliées au passage de valve par l'intermédiaire d'un passage de communication.
(JA) ニュートラルバルブは、ハウジング内に所定方向に移動可能に挿入されて、第1ポートと第2ポートとを弁通路を介して繋ぐ中立位置、中立位置に対して所定方向一方側にあって且つ第2ポートと弁通路との間を遮断する第1オフセット位置、及び中立位置に対して所定方向他方側にあって且つ第1ポートと弁通路との間を遮断する第2オフセット位置に夫々移動するスプールを備え、スプールは、その外周部に第1ポートの流体圧を受けて所定方向一方に押される第1受圧面と、第2ポートの流体圧を受けて所定方向他方に押される第2受圧面とを有し、ハウジングは、第1ポート及び第2ポートの両方から隔てられ、且つスプールの所定方向両端部が夫々配置される第1圧力室及び第2圧力室を夫々有し、第1圧力室及び第2圧力室は、連通路によって弁通路に繋がっている。
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)