EP1010898A2 - Distributeur pneumatique piloté - Google Patents

Distributeur pneumatique piloté Download PDF

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Publication number
EP1010898A2
EP1010898A2 EP99123631A EP99123631A EP1010898A2 EP 1010898 A2 EP1010898 A2 EP 1010898A2 EP 99123631 A EP99123631 A EP 99123631A EP 99123631 A EP99123631 A EP 99123631A EP 1010898 A2 EP1010898 A2 EP 1010898A2
Authority
EP
European Patent Office
Prior art keywords
pilot
control
directional valve
operated pneumatic
valve according
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.)
Granted
Application number
EP99123631A
Other languages
German (de)
English (en)
Other versions
EP1010898B1 (fr
EP1010898A3 (fr
Inventor
Joerg Widera
Rainer Jungeilges
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=7891621&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1010898(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1010898A2 publication Critical patent/EP1010898A2/fr
Publication of EP1010898A3 publication Critical patent/EP1010898A3/fr
Application granted granted Critical
Publication of EP1010898B1 publication Critical patent/EP1010898B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • F15B2013/0428—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 switchable internal or external pilot pressure source

Definitions

  • the invention is based on a pilot-controlled pneumatic directional valve according to the genus of Claim 1.
  • Such directional valves have long been known; in this regard, exemplary is given to the Print "Bosch Pneumatics information, basics and Functional description ", edition 9/77, page 46. It shows a directional valve with five connections, that of an electromagnetic pilot in two switch positions is switchable. Both Switch positions differ in the existing ones Pressure fluid connections between the connections from each other. Switching between the two Switch positions are made by the pilot control device, which is an actuator of the directional control valve with pressure medium debited or relieved.
  • both the Control valve self-controlled pressure medium (self-control) as well as one from an external pressure generator Use the pressure medium provided (external control).
  • Pilot control devices both control variants enable, have separate control pressure connections on that according to the desired pressure medium supply are to be contacted.
  • One of these connections will be there not needed and must be avoided to avoid Fluid leakage must be closed.
  • seals were developed that depend on the selected pressure medium supply in 180 ° to each other twisted installation positions can be installed. However, it can there are assembly errors that can only be achieved with the help elaborate position detection when assembling the unit are avoidable.
  • Directional control valves with incorrectly installed Seals have no function.
  • a pilot operated pneumatic Directional control valve with the characterizing features of the claim 1 the advantage that such assembly errors in the future can no longer occur.
  • Shuttle valves are proposed, provided that that the external control pressure is always higher than the system pressure is independent of its installation position close the external pilot pressure leading pilot channel, if this is not connected and the at the same time a pressure medium connection between the System pressure leading pilot channel and the Release the pilot control device of the directional valve. in the reverse case, i.e. if an external pressure supply is provided, these shuttle valves open due to the higher pressure levels of the external control pressure as well close the external pilot channel automatically at the same time the pilot pressure channel and the system pressure give at the same time a pressure medium connection Pilot control device of the directional valve free.
  • A is no external influence on the shuttle valve required; the function described fulfills this Shuttle valve regardless of its installation position.
  • shuttle valves are realizable and cost-neutral do not require additional construction volume; an elaborate Position detection during assembly assembly can be omitted.
  • FIG. 1 is the invention Directional control valve simplified using switching symbols shown
  • Figure 2 shows a detailed view of the Crossover valve according to the invention in cross section.
  • FIG 1 is a pilot operated directional control valve as an example 10 shown in 5/2 construction as a circuit symbol. Therefore the directional control valve 10 has five connections, with 12 the inlet connection, with 14 and 16 the return connections and with 18 and 20 the working connections of the directional valve 10 are designated. The latter are by switching the Directional control valve 10 alternately with the inlet connection 12 or one of the return connections 14, 16 connectable, based on the drawn flow arrows is clarified.
  • a Switching of the directional valve 10 takes place with the help of a Pilot control device 22, for example on the front the housing 24 of the directional valve 10 is flanged.
  • the Pilot control device 22 comprises an externally controllable, electromagnetic actuator 26, the one Control pressure port 28 and thus an undetectable Releases pressure medium connection to the directional valve 10 or closes.
  • the control pressure can be between the system pressure and a externally generated pressure can be selected, the Pressure level of the external control pressure is always higher than that of the system pressure.
  • a control pressure is made possible by the directional valve 10 with a shuttle valve 30 equipped, leading into the external control pressure or System pressure leading pilot channels 32, 34 open.
  • One of these is controlled by a closing member 36 Pilot channels 32, 34 via a control channel 38 with the Pilot control device 22 connected.
  • This closing member 36 closes the one that is not required Pilot channel 32, 34 and opens one at the same time Pressure medium connection from the one leading the control pressure Pilot channel 32, 34 to control channel 38.
  • the that Directional control valve 10, the pilot control device 22 and that Shuttle valve 30 enclosing and dash-dotted drawn frame indicates a housing 40 in which the described modules are installed.
  • FIG. 2 shows a detailed section through the Housing 40.
  • the cut takes place in one plane, in which one is assigned to the external connection Pilot channel 32, which branches off from the inlet connection 12 Pilot channel 34 and that to pilot device 22 leading control channel 38 into a common gap 42 flow into.
  • the mouth of the Pilot channel 32 of the pilot channel 34 in alignment opposite, while the control channel 38 laterally parallel offset to that on the pilot channel 34 Side of the gap 42 is arranged.
  • a Sealing element 44 from a self-contained Molded seal 46 and one in the interior of this Form seal 46 inserted tongue 48 inserted.
  • the tongue 48 is smaller in cross section than that Molded seal 46 executed and can within the gap 42nd perform a switching movement.
  • One end of the tongue 48 is also in one piece and articulated to the molded seal 46 tied while the opposite second end in Embodiment is free, i.e. no connection with the Form seal 46 has.
  • This free end of the tongue 48 extends into the area of the mouths of the Pilot channels 32, 34 and is on its the Mouth of the pilot channels 32, 34 facing upper and Underside with a circumferential sealing bead 50 each Mistake.
  • the mouths of the pilot channels 32, 34 have a smaller diameter than the sealing beads 50, so that the latter one of the pilot channels 32, 34 at tongue 48 can reliably close.
  • the Directional control valve 10 according to the invention comes for both types of Control pressure supply with a uniform Sealing element 44, which is also cost-neutral can be produced and requires no additional construction volume.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Valve Housings (AREA)
  • Fluid-Driven Valves (AREA)
  • Multiple-Way Valves (AREA)
EP99123631A 1998-12-18 1999-11-27 Distributeur pneumatique piloté Expired - Lifetime EP1010898B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19858566A DE19858566A1 (de) 1998-12-18 1998-12-18 Vorgesteuertes pneumatisches Wegeventil
DE19858566 1998-12-18

Publications (3)

Publication Number Publication Date
EP1010898A2 true EP1010898A2 (fr) 2000-06-21
EP1010898A3 EP1010898A3 (fr) 2000-07-12
EP1010898B1 EP1010898B1 (fr) 2003-11-19

Family

ID=7891621

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99123631A Expired - Lifetime EP1010898B1 (fr) 1998-12-18 1999-11-27 Distributeur pneumatique piloté

Country Status (3)

Country Link
EP (1) EP1010898B1 (fr)
JP (1) JP2000179740A (fr)
DE (2) DE19858566A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1164176B (de) * 1961-09-14 1964-02-27 Berg Airlectro Products Co Selbsttaetiges Mehrwegeventil
EP0846873A2 (fr) * 1996-12-05 1998-06-10 Smc Corporation Vanne de commutation pilotée.
EP0846872A1 (fr) * 1996-12-05 1998-06-10 Smc Corporation Manifold pour vanne-pilote

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE369C (de) * 1877-07-03 KOCH, Königl. Eisenbahn - Bau - und Betriebs-Inspektor, in Hamm Eisenbahngeleisbau - System, kombinirt aus Lang- und Querschwellen
DE2811365C2 (de) * 1978-03-16 1984-12-20 Wabco Westinghouse Fahrzeugbremsen GmbH, 3000 Hannover Pneumatisches Steuerventil

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1164176B (de) * 1961-09-14 1964-02-27 Berg Airlectro Products Co Selbsttaetiges Mehrwegeventil
EP0846873A2 (fr) * 1996-12-05 1998-06-10 Smc Corporation Vanne de commutation pilotée.
EP0846872A1 (fr) * 1996-12-05 1998-06-10 Smc Corporation Manifold pour vanne-pilote

Also Published As

Publication number Publication date
JP2000179740A (ja) 2000-06-27
EP1010898B1 (fr) 2003-11-19
DE19858566A1 (de) 2000-06-29
DE59907796D1 (de) 2003-12-24
EP1010898A3 (fr) 2000-07-12

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