EP1052414B1 - Fluidventilvorrichtung, insbesondere für hydraulische Fernsteuerung - Google Patents

Fluidventilvorrichtung, insbesondere für hydraulische Fernsteuerung Download PDF

Info

Publication number
EP1052414B1
EP1052414B1 EP00401265A EP00401265A EP1052414B1 EP 1052414 B1 EP1052414 B1 EP 1052414B1 EP 00401265 A EP00401265 A EP 00401265A EP 00401265 A EP00401265 A EP 00401265A EP 1052414 B1 EP1052414 B1 EP 1052414B1
Authority
EP
European Patent Office
Prior art keywords
plunger
fluid
smaller radius
chamber
bore
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP00401265A
Other languages
English (en)
French (fr)
Other versions
EP1052414A1 (de
Inventor
Gérard Laroze
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bosch Rexroth SAS
Original Assignee
Mannesmann Rexroth SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mannesmann Rexroth SA filed Critical Mannesmann Rexroth SA
Publication of EP1052414A1 publication Critical patent/EP1052414A1/de
Application granted granted Critical
Publication of EP1052414B1 publication Critical patent/EP1052414B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
    • F15B13/042—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure
    • F15B13/0422—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure with manually-operated pilot valves, e.g. joysticks

Definitions

  • the present invention relates to improvements brought to the fluid dispensing devices, especially for hydraulic remote control, such as those called “hydraulic manipulators”, including minus a pressure reducer mounted in a body and a control unit capable of modifying the calibration of the reducer, which reducer comprises a plunger movable, by the aforesaid control member, in a body cavity which includes, on one side, a connected housing to a hydraulic fluid return pipe T and containing a reduction spring for the reduction gear and a spring diver's return, and on the other side, a bore communicating, axially opposite the above-mentioned housing, with a remote control fluid flow chamber and, laterally, with a chamber supplied with fluid under pressure P from a source of fluid under pressure, said bore housing an active part of the plunger traversed by a channel having an axial orifice leading to the departure chamber and a lateral orifice suitable for being selectively put in communication with the housing or the supply chamber to ensure the fluid pressure reduction function of remote control when moving the diver in the bore
  • Such a device is described for example in the documents FR 2 376 978 or FR 2 507 732.
  • a known device partially shown in section in fig. 1 of the accompanying drawings, comprises a body (can be made up of several parts to facilitate the installation of components internal) in which at least one reduction gear is fitted fluid pressure 2.
  • This reducer includes a plunger 3 able to move in a cavity 4 formed in the body 1.
  • This cavity 4 has, on one side, an enlarged housing 5 connected to a return channel to the tank (T) and in which is disposed a calibration spring 6 taking support between a shoulder 7 of the plunger and a cup 8 movable in the housing 5 near the end free of the plunger and, on the other side, a bore 9 in which an active part 10 of the plunger can be moved to perform the pressure reduction function (P) fluid that is brought in from a source through an orifice inlet (not visible) connected to bore 9 by a chamber 12 opening radially therein, while that bore 9 opens out lower into a chamber 13 for starting the remote control fluid (D).
  • the part active or plunger 10 of the plunger has a channel axial interior 22 opening at the base of the piston 10 into the starting room 13 and ending superiorly with a radial bore 23 opening laterally.
  • the plunger 3 further includes a rod portion 14, overcoming the active part 10 and extending substantially in the cavity 5 while being surrounded coaxially by the calibration spring 6; this part of rod 14 passes through the cup 8 and ends with a head enlarged 15 defining a shoulder 16 for retaining the cup.
  • a return spring 17, coaxial with the rod 14, is interposed between the cup 8 and a shoulder defined in the body 1, to push the cup upwards, that is to say towards its position defining a calibration minimum.
  • the cup 8 is surmounted by a pusher 18 movable at free sliding in a body bore and making partially protrudes out of the body to be in contact a cam 19 able to pivot around an axis under the action an actuating member such as a handle 21.
  • Such a remote control device gives entirely satisfaction in terms of its technical functioning, and it is widely used.
  • a fluid dispensing device especially for hydraulic remote control is characterized, being arranged in accordance with the invention, in that the active part of the plunger has at least a portion of its periphery having a smaller radius over at least one angular sector and having sufficient axial length so that when the diver is moved from its rest position, a passage is established, between the aforementioned rooms receiving the supply fluid (P) and the starting fluid (D), through the interval defined by said portion of radius less and the bore as soon as the radial orifice of the channel inside the plunger is closed by the wall of the bore.
  • the portion of smaller radius of the active part of the plunger is annular and coaxial with the active part of the plunger.
  • the portion of smaller radius of the active part of the plunger is unique.
  • multiple spoke portions less are provided on the active part of the diver; in particular these portions of smaller radius are arranged symmetrically, especially two in number diametrically opposite or preferably the number of four, two to two diametrically opposite.
  • each portion of smaller radius is a dish.
  • this arrangement selectively provides two separate circuits for fluid flow, of a hand, on the periphery of the diver with a section of increased passage for the flow of fluid from the chamber supply to the departure chamber (regulation) and, on the other hand, axially through the central channel of the plunger for reverse fluid flow from the departure chamber to the reservoir.
  • the increase in the passage section as well supplied to the fluid during the operating phase in regulation results in a significant gain in the time of response of the device, which may be accompanied by a significant reduction or even cancellation of noise fluid flow.
  • FIG. 2 there is depicted a portion of fluid dispensing device having a similar overall concept (although not identical in its details) to that of the prior device illustrated in FIG. 1.
  • the part active 10 of the diver 3 has at least a portion 24 of its periphery with a smaller radius over at least one angular sector and having sufficient axial length so that when the diver is moved from its rest position, a passage is established between the above chambers 12 receiving the fluid supply P and 13 receiving the starting fluid D, through the interval defined by said portion 24 of smaller radius and the bore 9 as soon as the radial orifice 23 of the channel 22 inside the plunger is closed by the wall of bore 9.
  • the smallest radius portion of the part active of the diver is surrounded axially by two zones having the nominal diameter of the active part, namely the terminal zone 10a of the plunger and zone 10b containing the radial hole (s) 23 of the inner channel 22.
  • the device In FIG. 2, the device is in the neutral position or rest, the cam 19 being arranged coaxially in the axis 25 of the device.
  • the pusher 18 is returned to the projecting position (high position) by the return spring 17 and, the pusher 18 coagulating with the head 15 of the plunger 3, keeps this plunger in neutral position shown in Figure 2 in which the orifice lateral 23 of the inner channel 22 opens, completely or partially, in housing 5.
  • One solution may consist in producing said portion 24 in annular form so that the active part of the plunger is, in this zone, in the form of a revolution with a smaller radius than the two framing zones 10 a and 10 b (fig. 5) .
  • This solution which is advantageous as regards the sufficiency of the section of the annular passage 26 thus defined, nevertheless leads to insufficient guidance of the plunger 3 in the bore 9 (only the part of the bore comprised between the chamber 12 and the housing 5 ensures guiding the plunger when the end portion 10a is out of the bore).
  • the radius reduction can be carried out in the form of a surface with different radius of curvature and / or center of curvature as shown in Figure 6, which leads to a passage 26 in lunula shape.
  • the arrangement according to the invention leads to the result advantageous to establish two separate circulation circuits of the fluid, namely a circuit ensuring the connection between the chambers 12 (pressure supply P) and 13 (flow D) through the passage 26 and channel 22, and a circuit ensuring the connection between chamber 13 (outlet D) and housing 5 (return to tank T). It follows that, thanks to the implementation of the provisions of the invention, the passage section offered to the fluid is significantly increased compared to previous devices in which only the internal channel ensured the fluidic connection.
  • the machining of the body 1 can be simplified notably, and therefore its cost price to be lowered, because, to form the chamber 12 for admitting the supply fluid under pressure P, it is no longer necessary to machine the interior of the corresponding groove, but a simple full counterbore can be produced flat concentrically with the departure chamber 13.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Multiple-Way Valves (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Control Of Fluid Pressure (AREA)
  • Actuator (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Nozzles (AREA)
  • Fluid-Driven Valves (AREA)

Claims (8)

  1. Fluidventilvorrichtung, insbesondere für hydraulische Fernsteuerung, mit wenigstens einem in einem Körper (1) montierten Druckreduzierer (2) und einem Steuerorgan (19), das in der Lage ist, den Abgleich des Reduzierers zu verändern, wobei der Reduzierer (2) einen Tauchkolben (3) aufweist, der von dem Steuerorgan (19) in einem Hohlraum (4) des Körpers (1) verschiebbar ist, welcher einerseits eine Aussparung (5), die mit einer Rückleitung des Hydraulikfluids (T) verbunden ist und eine Abgleichfeder des Reduzierers und eine Rückstellfeder des Tauchkolbens enthält, und andererseits eine Bohrung (9) umfasst, die axial gegenüber der Aussparung (5) mit einer Ausgangskammer (13) des Fernsteuerungsfluids und seitlich mit einer Kammer (12) kommuniziert, die mit von einer Druckfluidquelle kommenden Druckfluid (P) versorgt ist, wobei die Bohrung (9) einen aktiven Bereich (10) des Tauchkolbens (3) aufnimmt, durch den ein Kanal (22) verläuft, der eine auf die Ausgangskammer (13) mündende axiale Öffnung und eine seitliche Öffnung (23) aufweist, die geeignet ist, um selektiv mit der Ausnehmung (5) oder der Versorgungskammer (12) in Verbindung gebracht zu werden, um die Funktion der Druckreduzierung des Fernsteuerungsfluids bei der Verschiebung des Tauchkolbens in der Bohrung (9) zu gewährleisten,
    dadurch gekennzeichnet, dass der aktive Bereich (10) des Tauchkolbens (3) wenigstens einen Abschnitt seiner Peripherie aufweist, der auf wenigstens einem Winkelsektor einen verminderten Radius hat und eine ausreichende axiale Länge hat, damit, wenn der Tauchkolben aus seiner Ruheposition verschoben ist, ein Durchgang zwischen der das Versorgungsfluid (P) aufnehmenden Kammer (12) und der das Ausgangsfluid (D) aufnehmenden Kammer (13) ein Durchgang über das durch den Abschnitt (24) mit vermindertem Radius definierte Intervall (26) und die Bohrung (9) hergestellt wird, nachdem die radiale Öffnung (23) des Kanals (22) innerhalb des Tauchkolbens durch die Wand der Bohrung (9) verschlossen worden ist.
  2. Fluidventilvorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass der Abschnitt (24) mit vermindertem Radius des aktiven Bereichs, (10) des Tauchkolbens (3) ringförmig und koaxial zum aktiven Bereich des Tauchkolbens ist.
  3. Fluidventilvorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass der Abschnitt (24) mit vermindertem Radius des aktiven Bereichs des Tauchkolbens ein einziger Abschnitt ist.
  4. Fluidventilvorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass mehrere Abschnitte (24) mit vermindertem Radius an der Peripherie des aktiven Bereichs des Tauchkolbens vorgesehen sind.
  5. Fluidventilvorrichtung nach Anspruch 4, dadurch gekennzeichnet, dass die Abschnitte (24) mit vermindertem Radius symmetrisch am Umfang des aktiven Bereichs des Tauchkolbens angeordnet sind.
  6. Fluidventilvorrichtung nach Anspruch 5, dadurch gekennzeichnet, dass die Zahl der Abschnitte (24) mit vermindertem Radius zwei ist, und dass die Abschnitte diametral gegenüberliegen.
  7. Fluidventilvorrichtung nach Anspruch 5, dadurch gekennzeichnet, dass die Zahl der Abschnitte (24) mit vermindertem Radius vier ist, und dass sich die Abschnitte paarweise diametral gegenüberliegen.
  8. Fluidventilvorrichtung nach einem beliebigen der Ansprüche 3-7, dadurch gekennzeichnet, dass jeder Abschnitt (24) mit vermindertem Radius eine Abflachung ist.
EP00401265A 1999-05-12 2000-05-09 Fluidventilvorrichtung, insbesondere für hydraulische Fernsteuerung Expired - Lifetime EP1052414B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9906088A FR2793532B1 (fr) 1999-05-12 1999-05-12 Dispositif distributeur de fluide notamment pour telecommande hydraulique
FR9906088 1999-05-12

Publications (2)

Publication Number Publication Date
EP1052414A1 EP1052414A1 (de) 2000-11-15
EP1052414B1 true EP1052414B1 (de) 2004-04-07

Family

ID=9545540

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00401265A Expired - Lifetime EP1052414B1 (de) 1999-05-12 2000-05-09 Fluidventilvorrichtung, insbesondere für hydraulische Fernsteuerung

Country Status (5)

Country Link
EP (1) EP1052414B1 (de)
JP (1) JP2000357016A (de)
AT (1) ATE263929T1 (de)
DE (1) DE60009598T2 (de)
FR (1) FR2793532B1 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101512201B (zh) * 2006-09-26 2011-03-09 博格华纳公司 直动式先导压力控制螺线管
CN102007331B (zh) 2008-04-28 2014-11-05 博格华纳公司 用于螺线管的液压路径安排的包覆模制或压入式套管
FR2938309B1 (fr) 2008-11-12 2010-10-29 Bosch Rexroth Dsi Sas Dispositif de regulation de pression, notamment du type telecommande hydraulique
IT201600127801A1 (it) * 2016-12-16 2018-06-16 Walvoil Spa Servocomando idraulico ad area differenziale

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2273178B1 (de) * 1974-05-31 1978-03-24 Bennes Marrel
SE397390B (sv) * 1974-11-07 1977-10-31 Nordhydraulic Ab Anordning for hydraulisk styrning av centrerad flerleges riktningsventil
FR2376978A1 (fr) 1977-01-06 1978-08-04 Rexroth Sigma Perfectionnements aux dispositifs distributeurs de fluide, notamment pour telecommande hydraulique
DE3070995D1 (en) * 1980-06-16 1985-09-19 Caterpillar Tractor Co Pressure reducing valve with floating stem for make-up vent
FR2507732B1 (fr) 1981-06-12 1985-08-02 Rexroth Sigma Perfectionnements apportes aux plongeurs pour reducteurs de pression de fluide, reducteurs et distributeurs equipes de tels plongeurs
IT1144292B (it) * 1981-07-09 1986-10-29 Fiat Allis Macch Movi Dispositivo idraulico a comando manuale per il controllo di un distributore idraulico
FR2557218B1 (fr) * 1983-12-21 1988-01-15 Bennes Marrel Emetteur hydraulique de commande a distance avec amplificateurs de debit
US5566710A (en) * 1994-09-29 1996-10-22 Dana Corporation Pre-detent tactile feedback assembly for a fluid control valve

Also Published As

Publication number Publication date
FR2793532B1 (fr) 2001-08-03
DE60009598T2 (de) 2005-06-09
JP2000357016A (ja) 2000-12-26
EP1052414A1 (de) 2000-11-15
DE60009598D1 (de) 2004-05-13
ATE263929T1 (de) 2004-04-15
FR2793532A1 (fr) 2000-11-17

Similar Documents

Publication Publication Date Title
EP0757592B1 (de) Pumpe mit vordruckaufbau
EP0494803B1 (de) Betätigungskappe eines Zerstäubers mit Verschluss
EP1339501B1 (de) Vorrichtung zur abgabe von fliessfähigen medien
CA2172192C (fr) Distributeur aerosol a deux buses de pulverisation
FR2604640A1 (fr) Instrument de revetement avec un liquide; plus particulierement, instrument d'ecriture, instrument pour soins de beaute, etc.
CH645587A5 (fr) Atomiseur de liquide a fonctionnement manuel.
FR2652389A1 (fr) Perfectionnement aux pompes a precompression pour la diffusion d'un liquide.
EP0798012B1 (de) Ventil zur Behandlung von Hydrocephalus
EP1052414B1 (de) Fluidventilvorrichtung, insbesondere für hydraulische Fernsteuerung
EP0707894B1 (de) Miniatur-Vordruckpumpe
EP1268083A1 (de) Abgabevorrichtung mit einem durch einem differentialkolben gebildetes auslassventil
EP1202818B1 (de) Austragsvorrichtung für medien mit verschlusssystem
FR3049198A3 (fr) Mecanisme d'etancheite et de decontamination et pommeau de douche contenant ce mecanisme
EP0889758B1 (de) Verteilungseinrichtung einer einmaligen dosis eines flüssigen produktes
EP1302246A1 (de) Einrichtung zum Zerstäuben von mindestens eines Produktes auf einem Substrat, insbesondere auf einem Keratinsubstrat wie Haut
FR2675447A1 (fr) Servomoteur pneumatique.
FR2517791A1 (fr) Perfectionnements apportes aux distributeurs hydrauliques
EP2295150B1 (de) Druckknopf für ein Spendersystem mit unter Druck stehendem Produkt
EP0947754B1 (de) Impulsgesteuertes, elektromagnetisches Hydraulikventil
EP0548350B1 (de) Sprühbehälter
FR2721679A1 (fr) Dispositif de servovalve comportant des soupapes de commande d'alimentation et de retour pourvues d'un organe d'actionnement commun.
JP2540207Y2 (ja) 液体付勢装置
CA2092063C (fr) Distributeur de liquide equipe d'une pompe de distribution et pompe de distribution pour un tel distributeur
EP3449332A1 (de) Mischeinheit und mischarmatur mit solch einer mischeinheit
FR2710558A1 (fr) Dispositif de distribution d'un produit fluide à au moins deux orifices de distribution.

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT DE GB IT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

17P Request for examination filed

Effective date: 20001021

AKX Designation fees paid

Free format text: AT DE GB IT SE

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT DE GB IT SE

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REF Corresponds to:

Ref document number: 60009598

Country of ref document: DE

Date of ref document: 20040513

Kind code of ref document: P

REG Reference to a national code

Ref country code: SE

Ref legal event code: TRGR

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20040723

RAP2 Party data changed (patent owner data changed or rights of a patent transferred)

Owner name: REXROTH S.A.

RAP2 Party data changed (patent owner data changed or rights of a patent transferred)

Owner name: BOSCH REXROTH

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20050110

REG Reference to a national code

Ref country code: GB

Ref legal event code: 732E

REG Reference to a national code

Ref country code: GB

Ref legal event code: 732E

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20090422

Year of fee payment: 10

Ref country code: IT

Payment date: 20090523

Year of fee payment: 10

Ref country code: AT

Payment date: 20090423

Year of fee payment: 10

Ref country code: DE

Payment date: 20090512

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20090505

Year of fee payment: 10

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20100509

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100509

EUG Se: european patent has lapsed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100509

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100510

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20101201

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100509