EP0994261A2 - Ensemble pour l'actionnement hydraulique d'une capote, d'un hayon arrière, ou similaire - Google Patents

Ensemble pour l'actionnement hydraulique d'une capote, d'un hayon arrière, ou similaire Download PDF

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Publication number
EP0994261A2
EP0994261A2 EP99890288A EP99890288A EP0994261A2 EP 0994261 A2 EP0994261 A2 EP 0994261A2 EP 99890288 A EP99890288 A EP 99890288A EP 99890288 A EP99890288 A EP 99890288A EP 0994261 A2 EP0994261 A2 EP 0994261A2
Authority
EP
European Patent Office
Prior art keywords
check valve
valve
throttle
line
working
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.)
Withdrawn
Application number
EP99890288A
Other languages
German (de)
English (en)
Other versions
EP0994261A3 (fr
Inventor
Gernot Techet
Burkhard Scholz
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.)
Hoerbiger Hydraulik GmbH
Original Assignee
Hoerbiger Hydraulik 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
Application filed by Hoerbiger Hydraulik GmbH filed Critical Hoerbiger Hydraulik GmbH
Publication of EP0994261A2 publication Critical patent/EP0994261A2/fr
Publication of EP0994261A3 publication Critical patent/EP0994261A3/fr
Withdrawn legal-status Critical Current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
    • F15B7/00—Systems in which the movement produced is definitely related to the output of a volumetric pump; Telemotors
    • F15B7/005—With rotary or crank input
    • F15B7/006—Rotary pump input
    • 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
    • F15B13/021—Valves for interconnecting the fluid chambers of an actuator
    • 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
    • F15B13/10—Special arrangements for operating the actuated device with or without using fluid pressure, e.g. for emergency use
    • 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
    • F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
    • F15B20/004—Fluid pressure supply failure
    • 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
    • F15B7/00—Systems in which the movement produced is definitely related to the output of a volumetric pump; Telemotors
    • F15B7/003—Systems in which the movement produced is definitely related to the output of a volumetric pump; Telemotors with multiple outputs
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/2053—Type of pump
    • F15B2211/20561—Type of pump reversible

Definitions

  • the invention relates to an arrangement for hydraulic actuation of a Convertible top, a trunk lid, a cover flap or the like on a vehicle, with at least one double-acting hydraulic working cylinder, the is articulated on the one hand on the vehicle and on the other hand on the cover flap and whose workspaces with one side of a switchable pressure source each Connection, and a check valve, especially for use in such an arrangement, with a control line, via which one on the Control piston acting on the valve element can be subjected to a blocking pressure is.
  • Such arrangements are known and enable, for example, the automatic actuation of vehicle doors, hoods, maintenance flaps or also from cover flaps of the trunk, one accommodating a folding top Room or the roof itself.
  • the cover flap, the hood or the like in the stop hydraulically locked to prevent uncontrolled Fall behind and eliminate the associated dangers.
  • this is done by a so-called emergency hand screw causes the connecting hole between the two workrooms of the hydraulic working cylinder locks, which moves said component.
  • This emergency hand screw ensures that, for example, when Closing a convertible top on the piston side there is pressure build-up and at the same time, the rod side remains depressurized (for systems in which the The convertible top is closed by extending the working cylinder becomes).
  • the piston and rod side are reversed basically the same. If the unit fails, the emergency hand screw can operated by hand and thus the connection between piston and Bar side can be opened.
  • the system is depressurized and that Canopy or the flap or the like. Can be operated manually, with the Connection hole the hydraulic medium between the workrooms of the Working cylinder is moved.
  • the installation position of the unit in the vehicle is very unfavorable, so that the emergency hand screw can only be operated with great difficulty.
  • the unit is usually housed in the rear wheel arch and therefore the To be able to operate the emergency hand screw from the trunk must be flexible Wave may be provided. But this creates an undesirable, disadvantageous Connection between a wet and a dry room, which additional elaborate sealing points required.
  • a variant with an electrically operated 2/2-way poppet valve is again expensive because the valve is waterproof must be carried out and prone to failure.
  • the object of the present invention is to provide a known arrangement of the to improve the type described at the outset so that the disadvantages described, especially with regard to the limited space and the difficult to access Installation positions can be avoided and that in particular on simple and safe If the pressure fails, a fixation in the current position of the actuated component and then automatically an emergency actuation of the Tailgate, the cover flap, the convertible top in at least one direction, preferably for closing these components by hand.
  • the aim of the invention is a check valve which, when used in the Arrangement of the invention simplifies its construction, the space requirement further can shrink, in principle any installation position and with itself simple construction high functional reliability in terms of locking and automatic Has emergency operability.
  • This task is carried out in an arrangement of the type mentioned solved according to the invention in that the two working spaces of the or each Working cylinders are connected to each other via a connecting line, in who uses a hydraulically lockable check valve, whose Valve element via a hydraulically operated control piston with a larger one Area as the valve seat is lockable; that in the hydraulic line to one a choke is used in the working spaces of the or each working cylinder.
  • the connecting line between this choke and the or each Working cylinder attaches and the control line for the lockable check valve attaches between the pressure source and the throttle.
  • the valve Even with one Failure of the unit, the valve remains blocked for the time being and fixes the actuated component in its current position, i.e. a convertible top cannot involuntarily falling back into the roof compartment or uncontrolled into the closed position. Only if additionally by manual operation a pressure increase in the opening direction of the valve takes place due to the time delay due to the actuation of the control piston the valve opens the valve and thus a direct connection of the two working spaces of the or each working cylinder in one direction automatically free.
  • the top, the cover flap, tailgate or the like at least in one direction, preferably in the sense of closing it Components to be moved.
  • connection line of the two workrooms of the or each working cylinder Connects hydraulic lines to these work rooms. So that can in the structure of the overall arrangement facilitating and simplifying additional fittings on the or each cylinder can be avoided and the connecting line can be at any structurally suitable location be relocated.
  • Tailgates, covers for hoods, etc. by extending the or each Working cylinder is effected is according to another feature of the invention provided that the unlockable check valve in its unlocked State in the direction from the rod side of the or each working cylinder to f the piston side opens.
  • the manual override is now closed and closed thus the safe use of the vehicle until the repair of the hydraulic units - with the least effort and maximum functional reliability guaranteed.
  • the further object of the invention is as in a check valve described in the introduction achieved that two flow holes for the Hydraulic medium and a kauspas say between these flow holes are present, in which connection passage the valve seat is formed and the valve element is arranged.
  • connection passage the valve seat is formed and the valve element is arranged.
  • FIG. 1 shows a schematic hydraulic circuit diagram an arrangement according to the present invention and FIGS. 2a and 2b show a special lockable check valve in two, at right angles to each other oriented longitudinal sections.
  • Fig. 1 for hydraulic actuation of a Convertible top, a cover flap, a trunk lid or another movable Vehicle part has at least one double-acting hydraulic Working cylinder 1 on the one hand on the vehicle and on the other hand on one Part of the hood is hinged, for example. This is typically done Close the convertible top by extending the piston rod of the working cylinder and opening by retracting.
  • the work rooms 2, 3 of the working cylinder 1 are connected via lines 4, 5 to a hydraulic unit 6, which with is connected to the vehicle's electrical system.
  • a hydraulic unit 6 instead of bilateral direct articulation of the working cylinder 3 could be its articulation on the vehicle and / or convertible top side also indirectly via levers, Hinge arrangements or the like take place.
  • each working cylinder 1 The two working spaces 2, 3 of each working cylinder 1 are on the Lines 4, 5, each with one side of a switchable pressure source 7 in Hydraulic unit 6 (here formed from a pump including drive motor) in connection.
  • Hydraulic unit 6 here formed from a pump including drive motor
  • the connecting line, not shown, of the hydraulic unit 6 controls the motor of the pump of the pressure source 7 and a shuttle valve 8 between the via adjustable pressure relief valves 9, 10 leading to tank 10 Cables.
  • this connection line could also be used, for example Limit switches or other position controls signals too no further deliver illustrated control units or the like.
  • a force is applied to manually close the convertible top leads to an increase in pressure in line 4. Because of the time delay of the pressure build-up before and after the throttle 15, the pressure rises first in the connecting line 12 faster, which is a slower rising Pressure in the control line 14 faces. This can cause the check valve 13 can be opened, i.e. the pushing of hydraulic medium from the rod side Working space 2 in the piston-side working space 3 via the in check valve 13 which is no longer blocked in this direction is possible.
  • 2a and 2b are longitudinal sections through a check valve according to the invention 13 for preferred use in the arrangement described shown.
  • the housing 21 of the check valve 13 which is also in the bellhousing can be integrated, with a further reduction of the Systems is possible and only two connections to be sealed for the Hydraulic lines 4, 5 to the or each working cylinder 1 are to be provided, two flow bores 22 and 23 are provided, which are part or, at Integration in the bellhousing, the beginning of lines 4, 5.
  • the Connection line 12 is through a through the flow holes 22, 23 connecting Passage 24 realized in which the valve seat 25 is also formed and in which also the valve element 26 cooperating with the valve seat 25, preferably a valve ball is provided.
  • the throttling point 15 acting nozzle 27 is also in the housing 21, in the course of the line 22, educated.
  • the control piston 29 is by a spring 30, the Counteracts control pressure in the passage 28, acted upon. To the outside the working space of the control piston 29 by a screw plug 31 with an O-ring seal completed, with the spring also via the screw opening 30. the control piston 29 and the valve element 26 are accessible.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Fluid-Pressure Circuits (AREA)
EP99890288A 1998-10-15 1999-09-08 Ensemble pour l'actionnement hydraulique d'une capote, d'un hayon arrière, ou similaire Withdrawn EP0994261A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT172598A AT406357B (de) 1998-10-15 1998-10-15 Anordnung zur hydraulischen betätigung eines verdecks, eines heckdeckels od. dgl.
AT172598 1998-10-15

Publications (2)

Publication Number Publication Date
EP0994261A2 true EP0994261A2 (fr) 2000-04-19
EP0994261A3 EP0994261A3 (fr) 2001-07-25

Family

ID=3519669

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99890288A Withdrawn EP0994261A3 (fr) 1998-10-15 1999-09-08 Ensemble pour l'actionnement hydraulique d'une capote, d'un hayon arrière, ou similaire

Country Status (2)

Country Link
EP (1) EP0994261A3 (fr)
AT (1) AT406357B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002061288A2 (fr) * 2001-01-29 2002-08-08 Hoerbiger Hydraulik Gmbh Dispositif de commande hydraulique et clapet anti-retour a blocage hydraulique
AT412112B (de) * 2002-09-30 2004-09-27 Hoerbiger Hydraulik Vorspannventil mit zumindest zwei schaltstufen sowie hydraulische betätigungsanordnung

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB863701A (en) * 1959-04-03 1961-03-22 Caterpillar Tractor Co Control for hydraulic jack circuits
JPS54109586A (en) * 1978-02-16 1979-08-28 Tokico Ltd Actuator
US5331882A (en) * 1993-04-05 1994-07-26 Deere & Company Control valve system with float valve
LU88384A1 (de) * 1993-07-16 1995-02-01 Hydrolux Sarl 2-Wege-Einbauventil als Sitzventil
AT404343B (de) * 1995-10-30 1998-10-27 Weber Walter Hydraulikschaltung
AT403785B (de) * 1996-04-24 1998-05-25 Hoerbiger Gmbh Hydraulische betätigungsanordnung
NL1004534C2 (nl) * 1996-11-14 1998-05-18 Applied Power Inc Hydraulische bedieningsinrichting voor een afdekkap van een voertuig.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002061288A2 (fr) * 2001-01-29 2002-08-08 Hoerbiger Hydraulik Gmbh Dispositif de commande hydraulique et clapet anti-retour a blocage hydraulique
WO2002061288A3 (fr) * 2001-01-29 2004-02-12 Hoerbiger Hydraulik Dispositif de commande hydraulique et clapet anti-retour a blocage hydraulique
AT412112B (de) * 2002-09-30 2004-09-27 Hoerbiger Hydraulik Vorspannventil mit zumindest zwei schaltstufen sowie hydraulische betätigungsanordnung

Also Published As

Publication number Publication date
AT406357B (de) 2000-04-25
EP0994261A3 (fr) 2001-07-25
ATA172598A (de) 1999-09-15

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