EP0619106A1 - Lift insertable in a bathtub - Google Patents

Lift insertable in a bathtub Download PDF

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Publication number
EP0619106A1
EP0619106A1 EP93103521A EP93103521A EP0619106A1 EP 0619106 A1 EP0619106 A1 EP 0619106A1 EP 93103521 A EP93103521 A EP 93103521A EP 93103521 A EP93103521 A EP 93103521A EP 0619106 A1 EP0619106 A1 EP 0619106A1
Authority
EP
European Patent Office
Prior art keywords
valve
servo
actuator
valves
lifter 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
EP93103521A
Other languages
German (de)
French (fr)
Other versions
EP0619106B1 (en
Inventor
Peter Schmidt
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.)
Schmidt and Lenhardt GmbH and Co OHG
Original Assignee
Schmidt and Lenhardt GmbH and Co OHG
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
Priority to ES93103521T priority Critical patent/ES2096119T3/en
Application filed by Schmidt and Lenhardt GmbH and Co OHG filed Critical Schmidt and Lenhardt GmbH and Co OHG
Priority to AT93103521T priority patent/ATE146671T1/en
Priority to EP93103521A priority patent/EP0619106B1/en
Priority to DE59304901T priority patent/DE59304901D1/en
Priority to US08/199,384 priority patent/US5392474A/en
Priority to ZA941227A priority patent/ZA941227B/en
Priority to AU56476/94A priority patent/AU663457B2/en
Priority to CA002116931A priority patent/CA2116931A1/en
Priority to JP6062063A priority patent/JP2527408B2/en
Publication of EP0619106A1 publication Critical patent/EP0619106A1/en
Application granted granted Critical
Publication of EP0619106B1 publication Critical patent/EP0619106B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
    • B66F7/22—Lifting frames, e.g. for lifting vehicles; Platform lifts with tiltable platforms
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G7/00—Beds specially adapted for nursing; Devices for lifting patients or disabled persons
    • A61G7/10—Devices for lifting patients or disabled persons, e.g. special adaptations of hoists thereto
    • A61G7/1001—Devices for lifting patients or disabled persons, e.g. special adaptations of hoists thereto specially adapted for specific applications
    • A61G7/1003—Devices for lifting patients or disabled persons, e.g. special adaptations of hoists thereto specially adapted for specific applications mounted on or in combination with a bath-tub
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G7/00—Beds specially adapted for nursing; Devices for lifting patients or disabled persons
    • A61G7/10—Devices for lifting patients or disabled persons, e.g. special adaptations of hoists thereto
    • A61G7/1013—Lifting of patients by
    • A61G7/1019—Vertical extending columns or mechanisms
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G7/00—Beds specially adapted for nursing; Devices for lifting patients or disabled persons
    • A61G7/10—Devices for lifting patients or disabled persons, e.g. special adaptations of hoists thereto
    • A61G7/1013—Lifting of patients by
    • A61G7/1021—Inflatable cushions
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G7/00—Beds specially adapted for nursing; Devices for lifting patients or disabled persons
    • A61G7/10—Devices for lifting patients or disabled persons, e.g. special adaptations of hoists thereto
    • A61G7/1049—Attachment, suspending or supporting means for patients
    • A61G7/1059—Seats
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G7/00—Beds specially adapted for nursing; Devices for lifting patients or disabled persons
    • A61G7/10—Devices for lifting patients or disabled persons, e.g. special adaptations of hoists thereto
    • A61G7/1073—Parts, details or accessories
    • A61G7/1082—Rests specially adapted for
    • A61G7/1088—Back
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
    • B66F3/22—Lazy-tongs mechanisms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
    • B66F7/06—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement
    • B66F7/065—Scissor linkages, i.e. X-configuration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
    • B66F7/06—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement
    • B66F7/08—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement hydraulically or pneumatically operated

Definitions

  • the invention relates to a lifter for the disabled which can be used in bathtubs and which has a floor frame, a lifting plate, a guide frame connecting this to the floor frame and a hydraulic lifting device with valve device.
  • Such a lifter is known from EP-C-0347652, in which a manual control valve is attached under the lifting plate, the operating lever of which extends through a slot in the lifting plate and stands up over the seat surface of the lifting plate.
  • the valve device is connected to the pressurized water supply line by means of a hose and connects the lifting device to the pressurized water supply in a pivoted position of the control lever, so that the lifting plate travels upwards and in the other pivoting position the lifting device with an emptying line, so that the lifting plate travels downward. In a central position of the hand lever, the lifting plate remains in the current position.
  • the manual control lever must be easily accessible both for the handicapped sitting on the lifting plate and for assistants outside the bathtub. For this reason, it is arranged in the known lifter near the side edge of the lifting plate, approximately in the leg support area. Since many bathtubs are walled in on a bathroom wall, should the hand control lever is on the side of the lift facing the bathroom wall, otherwise the lever will get in the way of the disabled person getting in and out. That is why there are so-called left and right versions for the respective bathtub installation. In hospitals, however, there is not a separate lifter for every bathtub, so that it cannot be avoided that the operating lever is also on the entry and exit side for many uses.
  • the object of the invention is to improve a lifter of the type mentioned with regard to the control of the hydraulic drives in such a way that the actuation is facilitated both for a disabled person and for the auxiliary person.
  • valve device including its actuating means is arranged completely below the floor level of the lifting plate and comprises a number of remotely operable working valves, that a hand control device is connected to the valve device by means of a plurality of flexible hoses, that the hand control device has a number substantially the same trained trained manually operated servo valves, each having a control chamber on one side of a valve seat, into which one of the hoses opens, that in each servo valve on the other side of the valve seat, a pressure chamber is formed that the pressure chambers of all servo valves on a common hose of the plurality Hoses are connected, that all servo valves are hydraulically and / or mechanically pretensioned in the closed position, that the control chamber of each servo valve is connected to an emptying line in its closed position sen and that each servo valve is a manually operable actuator which can be moved from a rest position against the action of a restoring force into one or more working positions, in which or which the pressure
  • the invention has the advantage that any manual control means are missing from the lifting plate, that is to say the lifting plate can be climbed on and off again without hindrance.
  • the hand control unit can also be positioned as required. Depending on the type of handicap, the handicapped person can hold the control unit in his hand, lie on his lap, hang it up in an easily accessible place on the bathroom wall or simply place it on the lifting plate next to him. Auxiliaries can operate the lifter more easily and quickly using the hand control unit and do not have to laboriously search for the actuators under water when the lifting plate is lowered.
  • an embodiment of the invention is that a backrest is pivotally arranged on the lifting plate, on which a hydraulic pivoting device engages and that the valve device has at least four working valves and the manual control device has the same number of servo valves.
  • the hand control unit is small in size, so it can be held in one hand.
  • the hydraulic connecting lines do not stand in the way of this manageability, since they only need an outer diameter of four millimeters or less, because low water flow rates are sufficient to control the working valves.
  • the at least five hoses for actuating four working valves are preferably encased in a spiral hose, which hardly needs to be thicker than the hose of a conventional hand shower.
  • the manual control device can have its own actuating element, such as a push button, for each servo valve.
  • actuating element such as a push button
  • a common actuating element is preferred for all servo valves, for example in the form of a joystick, that is to say a lever which is at several angles to one another Levels can be moved.
  • a setting is preferably proposed for this in order to guide the central lever exactly. It is within the scope of the invention to get by without a backdrop, in which case the central lever can be pivoted in all directions with the possibility of simultaneously lifting the lifting plate and swiveling the backrest forward in a diagonal position of the central lever.
  • the thin control hoses each open into a control chamber of a servo valve. It is now important that this control chamber is constantly connected to either the pressure supply line or the drain line. As long as there is no hydraulic device in operation on the lifter, all servo valves are in the closed position and the associated control hoses are connected to the drain line or to each drain hole on the control unit. The control lines are then depressurized. The working valves in the valve block below the lifting plate are closed accordingly. If the manual actuator on the control unit is then actuated, at least one servo valve is adjusted in the open position. The control chamber is first shut off from the drain line and then comes into communicating connection with the pressurized water supply line. When the actuator is released, this, an actuator and the closing body are reset by spring force and the control hoses are depressurized, so that Pressurized water can flow from the respective working valve of the valve block, which closes due to a built-in spring.
  • the four servo valves in the hand control device are arranged axially parallel and their axes intersect the corners of a square.
  • the manual actuator has a spherical cap-shaped bearing part which is pivotably mounted on complementary spherical surfaces of the housing of the hand control device in at least two mutually perpendicular planes, the lifting plate being moved up and down in one pivot plane and the backrest being moved forwards or backwards in the other plane.
  • This bearing part either has a circumferentially closed outer flange or at least four circumferentially distributed radial arms. In the neutral position of the manual actuator, the four spring-actuated actuators press against this outer flange or the radial arms at the end, so that the actuator is held in its central position.
  • a lifter 10 which can be used in bathtubs consists of a floor frame or frame 13 on which a scissor arm-like guide frame 14 is arranged, which carries a lifting plate 16, a lifting device 12 extending in the form of an end-closed pressure-resistant hose extending between this and the floor frame 13.
  • a backrest 18 is detachably arranged on the lifting plate 16 by means of a swivel fitting.
  • a hydraulic swivel device 19 is used to adjust the inclination of the backrest 18.
  • a multi-valve housing 20 On the underside of the lifting plate 16 is a multi-valve housing 20, into which a pressurized water supply line 22, a connecting hose 24 leading to the lifting hose 12, a connecting hose 26 leading to the pivoting device 19 and a spiral cable 28 open, at the end of which a hand control device 30 is arranged.
  • the multi-valve housing 20 contains four working valves which are controlled hydraulically. Manual controls on the multi-valve housing 20 are therefore omitted.
  • the lifting plate 18 does not require any openings in the area of the multi-valve housing 20.
  • the hand control device 30 consists of a two-part housing 32 in which there is a servo valve device with four servo valves 34, the axes of which are perpendicular to the bottom surface of the housing 32 and intersect the corners of a square.
  • the spiral cable 28 contains six thin hoses, namely four control hoses 36, a pressurized water supply hose 38 and an emptying hose 40.
  • the six hoses are sheathed by the spiral cable 28, which has a length of approximately 1.5 meters.
  • the drain hose 40 could be omitted, in which case the cavities formed between the outer surfaces of the hoses 36, 38 and the inner surface of the spiral cable 28 ensure the water backflow into the multi-valve housing 20.
  • the spiral cable has a rotatable screw sleeve in which a coupling insert is located , to which the six lines, each with a hole, are connected are.
  • a coupling insert On the multi-valve housing 20 there is a complementary counter-coupling piece into which the coupling insert of the cable 28 can be inserted.
  • the screw sleeve is then screwed onto the counterpart and the six lines 36, 38, 40 of the cable 28 are pressure-tightly connected to a corresponding channel system in the multi-valve housing 20.
  • the four control hoses 36 each lead to one of the four working valves in the multi-valve housing.
  • FIGURES 2 and 3 show control unit 30 in actual size.
  • the servo valve device in the hand control unit 30 comprises a base plate 42, which is part of the lower housing part, furthermore a middle plate 44 and a cover plate 46.
  • the three plates 42-46 are screwed together with a sealing washer by means of a bolt 48.
  • the four control hoses 36 and the pressure water supply hose 38 open in a row side by side (FIG. 6) in the middle plate at the same height.
  • Three coaxial longitudinal bores 48 of the hoses 36 open directly into cylinder chambers 50 of the servo valves 34.
  • the fourth longitudinal bore 52 is connected to the cylinder bore 50 of the fourth control hose 36 via a transverse channel 54.
  • each cylinder bore 50 there is an insert sleeve 56 in which a cylindrical actuator 58 with radial play is arranged.
  • a central housing head 62 has four pot-like depressions near its outer circumference, which engage in the cylindrical bores 50 and in turn guide the actuators 58.
  • the housing head 62 has a hemispherical bearing surface 64 for a circularly contoured bearing plate 66, which is formed in the central central region with a spherical cap-shaped counter surface 68.
  • the bearing plate 66 carries an actuating lever 70 which is vertical when the bearing plate 66 is horizontal and which extends through a link insert 72 and protrudes upward from the housing.
  • the link insert 72 has two intersecting guide slots 74, which limit the possibility of movement of the lever 70 to the longitudinal plane and the transverse plane.
  • the four actuators 58 are each pressed by means of a spring 76 upwards into contact with the bearing plate 66, which is thus held in the horizontal position. A compressible ring on the top stabilizes this position.
  • chambers 80 with an enlarged diameter are formed between the base plate 42 and the middle plate 44, in which there are spherical valve bodies 82 which are pressed against a valve seat 86 by means of springs 84.
  • the bottom plate 42 has a circumferential groove 88 which the chambers 80 together connects and into which in turn a longitudinal groove 90 (FIG. 6) opens, which is connected to the pressurized water supply hose 38 via a vertical bore 92.
  • the pressure chambers 80 are thus constantly filled with pressurized water.
  • the actuators 58 have axial bores which open at the end face at the bottom.
  • These axial bores are connected via radial bores to the annular gap between actuator 58 and insert sleeve 56, and these annular spaces communicate via at least one radial bore 94 in insert sleeve 56 and four radial bores 96 in housing cover plate 46 with the annular chamber 98 formed therein.
  • the drain line 40 is inserted into the servo valve housing in the area of the cover plate 46 and is connected to the drain channel system via an axial bore 100.
  • the control chambers 102 above the valve seat 86 are therefore depressurized, since they constantly communicate with the drainage channel system, which in turn connects the drainage line 40 to the multi-valve housing 20.
  • this drain line is brought up to a housing mouth, so that this line can constantly drain into the bathtub.
  • the spring 76 of the actuated actuator 58 ensures that the actuator is reset, as a result of which the closing body 82 blocks the corresponding control hose 36 from the pressurized water supply and at the same time connects it to the drain line 40.
  • the pressurized water that has entered the working valve in the multi-valve housing 20 is thus pressed back into the manual control device 30 via the control line 36, which is ensured by a mechanical spring in the working valve.
  • the water that is pushed back then passes through the drain line 40 again into the multi-way valve 20 and runs from there into the tub.
  • the working valve closes.
  • the hand control lever 70 has returned to its neutral position.
  • the manual control valve 30 has a narrow elongated handle 104 and a widened and raised head 106.
  • the bottom plate 42 of the housing 30 is extended beyond the upper housing part.
  • a suspension eye 108 is formed in this extension part.
  • the hand control device 30 has a length of approximately 100 mm to 110 mm without a suspension eye 108.
  • the width of the handle 104 is 30 mm.
  • FIGURES 2 and 3 show the hand control device 30 in natural size.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Veterinary Medicine (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Nursing (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Devices For Medical Bathing And Washing (AREA)
  • Invalid Beds And Related Equipment (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Bathtubs, Showers, And Their Attachments (AREA)

Abstract

The lifting plate (16) of a lifter (10) can be moved up and down by means of a hydraulically actuated lifting device (12). The back rest (18) can be pivoted forwards and backwards by means of a pivoting device (19) which is likewise operated hydraulically. Both working devices (12, 19) are connected to a multi-valve housing (20) which is located below the lifting plate (16) and does not have any manually operated devices. By contrast, the actuation takes place hydraulically via remote control. For this purpose, a manual control unit (30) having a number of in-built servo valves is connected to the multi-valve housing (20) via a flexible cable (28) which comprises a number of thin control tubes and a pressure water supply tube. <IMAGE>

Description

Die Erfindung betrifft einen, in Badewannen einsetzbaren Lifter für Behinderte, der ein Bodengestell, eine Hubplatte, ein diese mit dem Bodengestell verbindendes Führungsgestell sowie eine hydraulische Hubvorrichtung mit Ventileinrichtung aufweist.The invention relates to a lifter for the disabled which can be used in bathtubs and which has a floor frame, a lifting plate, a guide frame connecting this to the floor frame and a hydraulic lifting device with valve device.

Aus der EP-C-0347652 ist ein derartiger Lifter bekannt, bei dem unter der Hubplatte ein Handbetätigungsventil befestigt ist, dessen Betätigungshebel durch einen Schlitz in der Hubplatte greift und über die Sitzfläche der Hubplatte nach oben steht. Die Ventileinrichtung ist an die Druckwasserversorgungsleitung mittels eines Schlauches angeschlossen und verbindet in einer Schwenkstellung des Steuerhebels die Hubvorrichtung mit der Druckwasserversorgung, sodaß die Hubplatte aufwärts fährt und in der anderen Schwenkstellung die Hubvorrichtung mit einer Entleerungsleitung, sodaß die Hubplatte abwärts fährt. In einer Mittelstellung des Handhebels bleibt die Hubplatte in der nomentanen Position.Such a lifter is known from EP-C-0347652, in which a manual control valve is attached under the lifting plate, the operating lever of which extends through a slot in the lifting plate and stands up over the seat surface of the lifting plate. The valve device is connected to the pressurized water supply line by means of a hose and connects the lifting device to the pressurized water supply in a pivoted position of the control lever, so that the lifting plate travels upwards and in the other pivoting position the lifting device with an emptying line, so that the lifting plate travels downward. In a central position of the hand lever, the lifting plate remains in the current position.

Der Handbetätigungshebel muß sowohl für den, auf der Hubplatte sitzenden Behinderten, als auch für Hilfspersonen außerhalb der Badewanne gut erreichbar sein. Deswegen wird er bei dem bekannten Lifter nahe dem Seitenrand der Hubplatte etwa im Schenkelauflagebereich angeordnet. Da viele Badewannen an einer Badezimmerwand eingemauert sind, sollte der Handbedienungshebel an der, der Badezimmerwand zugewandten Seite des Lifters liegen, weil der Hebel sonst beim Ein- und Aussteigen durch den Behinderten im Wege ist. Deswegen gibt es sogenannte Links- und Rechtsausführungen für den jeweiligen Badewanneneinbau. In Krankenhäusern steht aber nicht für jede Badewanne ein eigener Lifter zur Verfügung, sodaß nicht zu vermeiden ist, daß sich der Betätigungshebel für viele Einsätze auch auf der Ein- und Ausstiegsseite befindet.The manual control lever must be easily accessible both for the handicapped sitting on the lifting plate and for assistants outside the bathtub. For this reason, it is arranged in the known lifter near the side edge of the lifting plate, approximately in the leg support area. Since many bathtubs are walled in on a bathroom wall, should the hand control lever is on the side of the lift facing the bathroom wall, otherwise the lever will get in the way of the disabled person getting in and out. That is why there are so-called left and right versions for the respective bathtub installation. In hospitals, however, there is not a separate lifter for every bathtub, so that it cannot be avoided that the operating lever is also on the entry and exit side for many uses.

Um diesem Mangel zu begegnen, sind auch Lifter bekannt, bei denen das Handbetätigungsorgan zwei nur geringfügig über die Hubplatte vorstehende Taster aufweist. Diese Lösung hat andere Nachteile, denn für viele Behinderte ist das Abfühlen und das Auswählen des richtigen Tasters unter Wasser problematisch.In order to counteract this deficiency, lifters are also known in which the manual actuating element has two buttons which protrude only slightly above the lifting plate. This solution has other disadvantages, because for many disabled people it is difficult to sense and select the right button under water.

In der nicht vorveröffentlichten EP-92122107.3 wird vorgeschlagen, eine an sich bekannte Rückenlehne neigungseinstellbar zu machen und diese Neigungseinstellung mittels einer hydraulischen Schwenkvorrichtung zu bewirken. Zur Steuerung der Rückenlehnenneigung ist dann ein weiteres Steuerventil erforderlich. Im Fall des eingangs genannten Standes der Technik wären zwei Handsteuerhebel neben oder hintereinander anzuordnen und im Fall einer Tastensteuerung müßten nun vier Tasten in der Hubplatte vorgesehen werden. Der Behinderte wäre für die Betätigung häufig überfordert und für eine Hilfsperson wäre es ebenfalls nicht einfach, unter Wasser die richtige Taste zu finden.In the unpublished EP-92122107.3 it is proposed to make a backrest known per se adjustable in inclination and to effect this inclination adjustment by means of a hydraulic swivel device. A further control valve is then required to control the backrest tilt. In the case of the prior art mentioned at the outset, two hand control levers would have to be arranged next to one another or in succession, and in the case of a key control four keys would now have to be provided in the lifting plate. The disabled person would often be overwhelmed to be able to work and it would also not be easy for an assistant to find the right button under water.

Aufgabe der Erfindung ist es, einen Lifter der eingangs genannten Art hinsichtlich der Steuerung der hydraulischen Antriebe dahingehend zu verbessern, daß die Betätigung sowohl für einen Behinderten als auch für die Hilfsperson erleichtert wird.The object of the invention is to improve a lifter of the type mentioned with regard to the control of the hydraulic drives in such a way that the actuation is facilitated both for a disabled person and for the auxiliary person.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die Ventileinrichtung einschließlich ihrer Betätigungsmittel vollständig unterhalb der Bodenebene der Hubplatte angeordnet ist und eine Anzahl fernbetätigbarer Arbeitsventile umfaßt, daß ein Handsteuergerät mittels einer Mehrzahl flexibler Schläuche an die Ventileinrichtung angeschlossen ist, daß das Handsteuergerät eine Anzahl im wesentlichen gleich ausgebildeter handbetätigbarer Servoventile aufweist, die auf einer Seite eines Ventilsitzes je eine Steuerkammer aufweisen, in die einer der Schläuche mündet, daß in jedem Servoventil auf der anderen Seite des Ventilsitzes eine Druckkammer gebildet ist, daß die Druckkammern aller Servoventile an einem gemeinsamen Schlauch der Mehrzahl von Schläuchen angeschlossen sind, daß alle Servoventile hydraulisch und/oder mechanisch in Schließstellung vorgespannt sind, daß die Steuerkammer jedes Servoventiles in dessen Schließstellung an eine Entleerungsleitung angeschlossen ist und daß jedes Servoventil ein von Hand betätigbares Stellglied aufweist, das aus einer Ruhestellung gegen die Wirkung einer Rückstellkraft in eine oder mehrere Arbeitsstellungen bewegbar ist, in welcher oder welchen die Druckkammer mit der Steuerkammer kommuniziert, diese jedoch gegenüber der Entleerungsleitung abgesperrt ist.This object is achieved in that the valve device including its actuating means is arranged completely below the floor level of the lifting plate and comprises a number of remotely operable working valves, that a hand control device is connected to the valve device by means of a plurality of flexible hoses, that the hand control device has a number substantially the same trained trained manually operated servo valves, each having a control chamber on one side of a valve seat, into which one of the hoses opens, that in each servo valve on the other side of the valve seat, a pressure chamber is formed that the pressure chambers of all servo valves on a common hose of the plurality Hoses are connected, that all servo valves are hydraulically and / or mechanically pretensioned in the closed position, that the control chamber of each servo valve is connected to an emptying line in its closed position sen and that each servo valve is a manually operable actuator which can be moved from a rest position against the action of a restoring force into one or more working positions, in which or which the pressure chamber communicates with the control chamber, but this is blocked off from the drain line.

Die Erfindung bringt einmal den Vorteil, daß jegliche Handsteuermittel an der Hubplatte fehlen, die Hubplatte also ungehindert bestiegen und wieder verlassen werden kann. Weiterhin kann das Handsteuergerät beliebig positioniert werden. Je nach Art der Behinderung kann der Behinderte das Steuergerät in die Hand nehmen, sich auf den Schoß legen, an einer gut erreichbaren Stelle der Badezimmerwand aufhängen oder einfach neben sich auf der Hubplatte ablegen. Hilfspersonen können den Lifter mittels des Handsteuergerätes einfacher und schneller bedienen und brauchen bei abgesenkter Hubplatte nicht umständlich unter Wasser nach den Stellorganen zu suchen.The invention has the advantage that any manual control means are missing from the lifting plate, that is to say the lifting plate can be climbed on and off again without hindrance. The hand control unit can also be positioned as required. Depending on the type of handicap, the handicapped person can hold the control unit in his hand, lie on his lap, hang it up in an easily accessible place on the bathroom wall or simply place it on the lifting plate next to him. Auxiliaries can operate the lifter more easily and quickly using the hand control unit and do not have to laboriously search for the actuators under water when the lifting plate is lowered.

Dank der Aufteilung der Ventileinrichtung in einen Arbeitsventilblock oder einer Anzahl separierter Arbeitsventile unter der Hubplatte einerseits und dem hydraulischen Steuergerät andererseits wird die Weiterentwicklung des Lifters mit mehreren hydraulischen Betätigungsvorrichtungen begünstigt. Somit besteht eine Ausgestaltung der Erfindung darin, daß an der Hubplatte eine Rückenlehne schwenkbar angeordnet ist, an der eine hydraulische Schwenkvorrichtung angreift und daß die Ventileinrichtung mindestens vier Arbeitsventile und das Handsteuergerät die gleiche Anzahl von Servoventilen aufweist. Da die Erfahrung gezeigt hat, daß es für eine Hilfsperson recht schwer ist, den Oberkörper eines Behinderten, der auf der abgesenkten Hubplatte sitzt, aus einer liegenden Stellung aufzurichten, denn die Rückenlehnenarretierung muß zuerst gelöst und dann mit dem Oberkörper nach vorn geschwenkt und wieder arretiert werden, bietet diese Ausgestaltung Abhilfe und die Steuerung der Schwenkvorrichtung für die Rückenlehne erfolgt mit demselben Steuergerät wie für das Heben und Senken der Hubplatte. Das Handsteuergerät ist klein dimensioniert, kann also in eine Hand genommen werden. Die hydraulischen Verbindungsleitungen stehen dieser Handlichkeit nicht im Wege, da sie nur einen Außendurchmesser von vier Millimeter oder weniger benötigen, denn zur Ansteuerung der Arbeitsventile reichen geringe Wasserdurchflußmengen aus. Die mindestens fünf Schläuche zur Betätigung von vier Arbeitsventilen werden vorzugsweise von einem Spiralschlauch ummantelt, der kaum dicker zu sein braucht als der Schlauch einer üblichen Handbrause.Thanks to the division of the valve device into a working valve block or a number of separate working valves under the lifting plate on the one hand and the hydraulic control unit on the other hand, the further development of the lifter with several hydraulic actuation devices is favored. Thus, an embodiment of the invention is that a backrest is pivotally arranged on the lifting plate, on which a hydraulic pivoting device engages and that the valve device has at least four working valves and the manual control device has the same number of servo valves. Since experience has shown that it is quite difficult for a caregiver to raise the upper body of a disabled person sitting on the lowered lifting plate from a lying position, because the backrest lock must first be released and then swung with the upper body forward and locked again this configuration offers a remedy and the control of the swiveling device for the backrest takes place with the same control device as for the lifting and lowering of the lifting plate. The hand control unit is small in size, so it can be held in one hand. The hydraulic connecting lines do not stand in the way of this manageability, since they only need an outer diameter of four millimeters or less, because low water flow rates are sufficient to control the working valves. The at least five hoses for actuating four working valves are preferably encased in a spiral hose, which hardly needs to be thicker than the hose of a conventional hand shower.

Das Handsteuergerät kann für jedes Servoventil ein eigenes Betätigungsorgan, wie z.B. eine Drucktaste aufweisen. Vorgezogen wird jedoch ein gemeinsames Betätigungsorgan für sämtliche Servoventile z.B. in Form eines Joysticks, also eines Hebels, der in mehreren winklig zueinander stehenden Ebenen bewegt werden kann. Vorzugsweise wird dafür eine Kulisse vorgeschlagen, um den Zentralhebel exakt zu führen. Dabei liegt es im Rahmen der Erfindung, auch ohne Kulisse auszukommen, wobei dann der Zentralhebel nach allen Richtungen geschwenkt werden kann mit der Möglichkeit in einer Diagonalstellung des Zentralhebels gleichzeitig das Heben der Hubplatte und das Nachvornschwenken der Rückenlehne zu bewirken.The manual control device can have its own actuating element, such as a push button, for each servo valve. However, a common actuating element is preferred for all servo valves, for example in the form of a joystick, that is to say a lever which is at several angles to one another Levels can be moved. A setting is preferably proposed for this in order to guide the central lever exactly. It is within the scope of the invention to get by without a backdrop, in which case the central lever can be pivoted in all directions with the possibility of simultaneously lifting the lifting plate and swiveling the backrest forward in a diagonal position of the central lever.

Die dünnen Steuerschläuche münden jeweils in einer Steuerkammer eines Servoventils. Wichtig ist nun, daß diese Steuerkammer ständig entweder mit der Druckversorgungsleitung oder der Entleerungsleitung verbunden ist. Solange am Lifter keine hydraulische Vorrichtung in Tätigkeit ist, befinden sich alle Servoventile in Schließstellung und die zugehörigen Steuerschläuche sind mit der Entleerungsleitung oder jeweils einer Entleerungsbohrung am Steuergerät verbunden. Die Steuerleitungen sind dann drucklos. Entsprechend sind die Arbeitsventile im Ventilblock unterhalb der Hubplatte geschlossen. Wird dann das Handbetätigungsorgan am Steuergerät betätigt, so wird mindestens ein Servoventil in Offenstellung verstellt. Dabei wird zuerst die Steuerkammer von der Entleerungsleitung abgesperrt und gelangt dann in kommunizierende Verbindung mit der Druckwasserversorgungsleitung. Beim Loslassen des Betätigungsorgans werden dieses, ein Stellglied und der Schließkörper durch Federkraft zurückgestellt und die Steuerschläuche werden drucklos, sodaß Druckwasser aus dem jeweiligen Arbeitsventil des Ventilblockes fließen kann, das aufgrund einer eingebauten Feder schließt.The thin control hoses each open into a control chamber of a servo valve. It is now important that this control chamber is constantly connected to either the pressure supply line or the drain line. As long as there is no hydraulic device in operation on the lifter, all servo valves are in the closed position and the associated control hoses are connected to the drain line or to each drain hole on the control unit. The control lines are then depressurized. The working valves in the valve block below the lifting plate are closed accordingly. If the manual actuator on the control unit is then actuated, at least one servo valve is adjusted in the open position. The control chamber is first shut off from the drain line and then comes into communicating connection with the pressurized water supply line. When the actuator is released, this, an actuator and the closing body are reset by spring force and the control hoses are depressurized, so that Pressurized water can flow from the respective working valve of the valve block, which closes due to a built-in spring.

Gemäß einer Ausgestaltung der Erfindung sind die vier Servoventile im Handsteuergerät achsparallel angeordnet und ihre Achsen schneiden die Ecken eines Quadrates. Das Handbetätigungsorgan weist ein kugelkalottenförmiges Lagerteil auf, das an komplemenären Kugeloberflächen des Gehäuses des Handsteuergerätes in mindestens zwei zueinander senkrechten Ebenen schwenkbar gelagert ist, wobei in der einen Schwenkebene die Hubplatte auf- und abbewegt und in der anderen Ebene die Rückenlehne vor- oder zurückbewegt wird. Dieses Lagerteil hat entweder einen umfangsgeschlossenen Außenflansch oder mindestens vier umfangsverteilte Radialarme. In der Neutralstellung des Handbetätigungsorgans drücken die vier federbetätigten Stellorgane stirnseitig gegen diesen Außenflansch bzw. die Radialarme, sodaß das Betätigungsorgan in seiner Mittelstellung gehalten wird.According to one embodiment of the invention, the four servo valves in the hand control device are arranged axially parallel and their axes intersect the corners of a square. The manual actuator has a spherical cap-shaped bearing part which is pivotably mounted on complementary spherical surfaces of the housing of the hand control device in at least two mutually perpendicular planes, the lifting plate being moved up and down in one pivot plane and the backrest being moved forwards or backwards in the other plane. This bearing part either has a circumferentially closed outer flange or at least four circumferentially distributed radial arms. In the neutral position of the manual actuator, the four spring-actuated actuators press against this outer flange or the radial arms at the end, so that the actuator is held in its central position.

Anhand der Zeichnung, die ein Ausführungsbeispiel darstellt, wird die Erfindung näher beschrieben.The invention is described in more detail with reference to the drawing, which represents an exemplary embodiment.

Es zeigt:

FIG. 1
eine schematische Seitenansicht eines Lifters mit hydraulischen Betätigungsvorrichtungen sowie einem Handsteuergerät,
FIG. 2
eine Draufsicht auf das Handsteuergerät,
FIG. 3
eine Seitenansicht des Handsteuergerätes,
FIG. 4
eine Längsschnittansicht durch das Handsteuergerät,
FIG. 5
eine Längsschnittansicht durch das Handsteuergerät im Bereich einer Servoventileinrichtung in größerem Maßstab und
FIG. 6
eine Querschnittansicht längs der Linie 6-6 der FIGUR 5.
It shows:
FIG. 1
is a schematic side view of a lifter with hydraulic actuators and a Hand control unit,
FIG. 2nd
a plan view of the hand control device,
FIG. 3rd
a side view of the hand control device,
FIG. 4th
2 shows a longitudinal sectional view through the hand control device,
FIG. 5
a longitudinal sectional view through the hand control device in the area of a servo valve device on a larger scale and
FIG. 6
a cross-sectional view taken along line 6-6 of FIGURE 5.

Ein in Badewannen einsetzbarer Lifter 10 besteht aus einem Bodenrahmen oder-gestell 13, auf dem ein scherenarmartiges Führungsgestell 14 angeordnet ist, das eine Hubplatte 16 trägt, wobei sich zwischen dieser und dem Bodenrahmen 13 eine Hubvorrichtung 12 in Form eines endseitig geschlossenen druckfesten Schlauches erstreckt. Auf der Hubplatte 16 ist eine Rückenlehne 18 mittels eines Schwenkbeschlages lösbar angeordnet. Eine hydraulische Schwenkvorrichtung 19 dient zur Neigungsverstellung der Rückenlehne 18.A lifter 10 which can be used in bathtubs consists of a floor frame or frame 13 on which a scissor arm-like guide frame 14 is arranged, which carries a lifting plate 16, a lifting device 12 extending in the form of an end-closed pressure-resistant hose extending between this and the floor frame 13. A backrest 18 is detachably arranged on the lifting plate 16 by means of a swivel fitting. A hydraulic swivel device 19 is used to adjust the inclination of the backrest 18.

An der Unterseite der Hubplatte 16 ist ein Mehrventilgehäuse 20 befestigt, in das eine Druckwasserversorgungsleitung 22, ein zum Hubschlauch 12 führender Verbindungsschlauch 24, ein zur Schwenkvorrichtung 19 führender Verbindungsschlauch 26 und ein Spiralkabel 28 münden, an dessen Ende ein Handsteuergerät 30 angeordnet ist. Das Mehrventilgehäuse 20 enthält vier Arbeitsventile, die hydraulisch angesteuert werden. Handbedienungselemente am Mehrventilgehäuse 20 entfallen also. Die Hubplatte 18 benötigt im Bereich des Mehrventilgehäuses 20 keinerlei Durchbrüche.On the underside of the lifting plate 16 is a multi-valve housing 20, into which a pressurized water supply line 22, a connecting hose 24 leading to the lifting hose 12, a connecting hose 26 leading to the pivoting device 19 and a spiral cable 28 open, at the end of which a hand control device 30 is arranged. The multi-valve housing 20 contains four working valves which are controlled hydraulically. Manual controls on the multi-valve housing 20 are therefore omitted. The lifting plate 18 does not require any openings in the area of the multi-valve housing 20.

Das Handsteuergerät 30 besteht aus einem zweiteiligen Gehäuse 32, in dem sich eine Servoventileinrichtung mit vier Servoventilen 34 befinden, deren Achsen auf der Bodenfläche des Gehäuses 32 senkrecht stehen und die Ecken eines Quadrates schneiden. Das Spiralkabel 28 enthält sechs dünne Schläuche, nämlich vier Steuerschläuche 36, einen Druckwasserversorgungsschlauch 38 und einen Entleerungsschlauch 40. Die sechs Schläuche werden von dem Spiralkabel 28 ummantelt, das eine Länge von ca. 1,5 Metern hat. Der Entleerungsschlauch 40 könnte entfallen, wobei dann die zwischen den Außenflächen der Schläuche 36,38 und der Innenfläche des Spiralkabels 28 gebildeten Hohlräume für den Wasserrückfluß in das Mehrventilgehäuse 20 sorgen.Am lifterseitigen Ende hat das Spiralkabel eine drehbare Schraubmuffe, in der sich ein Kupplungseinsatz befindet, an den die sechs Leitungen mit jeweils einer Bohrung angeschlossen sind. Am Mehrventilgehäuse 20 befindet sich ein komplementäres Gegenkupplungsstück, in das der Kupplungseinsatz des Kabels 28 eingesteckt werden kann. Die Schraubhülse wird dann auf das Gegenstück aufgeschraubt und die sechs Leitungen 36, 38, 40 des Kabels 28 sind mit einem entsprechenden Kanalsystem im Mehrventilgehäuse 20 druckdicht verbunden. Die vier Steuerschläuche 36 führen jeweils zu einem der vier Arbeitsventile im Mehrventilgehäuse. Die FIGUREN 2 und 3 zeigen das Steuergerät 30 in tatsächlicher Größe.The hand control device 30 consists of a two-part housing 32 in which there is a servo valve device with four servo valves 34, the axes of which are perpendicular to the bottom surface of the housing 32 and intersect the corners of a square. The spiral cable 28 contains six thin hoses, namely four control hoses 36, a pressurized water supply hose 38 and an emptying hose 40. The six hoses are sheathed by the spiral cable 28, which has a length of approximately 1.5 meters. The drain hose 40 could be omitted, in which case the cavities formed between the outer surfaces of the hoses 36, 38 and the inner surface of the spiral cable 28 ensure the water backflow into the multi-valve housing 20. At the end on the lifter side, the spiral cable has a rotatable screw sleeve in which a coupling insert is located , to which the six lines, each with a hole, are connected are. On the multi-valve housing 20 there is a complementary counter-coupling piece into which the coupling insert of the cable 28 can be inserted. The screw sleeve is then screwed onto the counterpart and the six lines 36, 38, 40 of the cable 28 are pressure-tightly connected to a corresponding channel system in the multi-valve housing 20. The four control hoses 36 each lead to one of the four working valves in the multi-valve housing. FIGURES 2 and 3 show control unit 30 in actual size.

Die Servoventileinrichtung im Handsteuergerät 30 umfaßt eine Bodenplatte 42, die Bestandteil des Gehäuseunterteils ist, weiterhin eine Mittelplatte 44 und eine Deckplatte 46. Die drei Platten 42-46 sind unter Zwischenlage von Dichtungsscheiben mittels eines Bolzens 48 verschraubt. Die vier Steuerschläuche 36 und der Druckwasserversorgungsschlauch 38 münden in einer Reihe nebeneinanderliegend (FIG. 6) in der Mittelplatte auf gleicher Höhe. Drei koaxiale Längsbohrungen 48 der Schläuche 36 münden direkt in Zylinderkammern 50 der Servoventile 34. Die vierte Längsbohrung 52 ist über einen Querkanal 54 mit der Zylinderbohrung 50 des vierten Steuerschlauches 36 verbunden. In jeder Zylinderbohrung 50 befindet sich eine Einsatzhülse 56, in der ein zylindrisches Stellglied 58 mit Radialspiel angeordnet ist. An beiden Stirnseiten der Einsatzhülsen 56 befinden sich O-Dichtungen 60, die das Stellglied 58 gegenüber dem Ventilgehäuse und den Einsatzhülsen abdichten.Ein zentraler Gehäusekopf 62 hat nahe seinem Außenumfang vier topfartige Vertiefungen, die in die zylindrischen Bohrungen 50 eingreifen und ihrerseits die Stellglieder 58 führen. Im Mittelbereich hat der Gehäusekopf 62 eine halbkugelförmige Lagerfläche 64 für eine kreisförmig konturierte Lagerplatte 66, die im zentralen Mittelbereich mit einer kugelkalottenförmigen Gegenfläche 68 ausgebildet ist. Die Lagerplatte 66 trägt einen Betätigungshebel 70, der bei waagerechter Lagerplatte 66 senkrecht steht und durch einen Kulisseneinsatz 72 hindurchgreift und aus dem Gehäuse nach oben herausragt. Der Kulisseneinsatz 72 hat zwei einander kreuzende Führungsschlitze 74, die die Bewegungsmöglichkeit des Hebels 70 auf die Längsebene und die Querebene beschränken.The servo valve device in the hand control unit 30 comprises a base plate 42, which is part of the lower housing part, furthermore a middle plate 44 and a cover plate 46. The three plates 42-46 are screwed together with a sealing washer by means of a bolt 48. The four control hoses 36 and the pressure water supply hose 38 open in a row side by side (FIG. 6) in the middle plate at the same height. Three coaxial longitudinal bores 48 of the hoses 36 open directly into cylinder chambers 50 of the servo valves 34. The fourth longitudinal bore 52 is connected to the cylinder bore 50 of the fourth control hose 36 via a transverse channel 54. In each cylinder bore 50 there is an insert sleeve 56 in which a cylindrical actuator 58 with radial play is arranged. There are O seals 60 on both end faces of the insert sleeves 56, which seal the actuator 58 with respect to the valve housing and seal the insert sleeves. A central housing head 62 has four pot-like depressions near its outer circumference, which engage in the cylindrical bores 50 and in turn guide the actuators 58. In the central region, the housing head 62 has a hemispherical bearing surface 64 for a circularly contoured bearing plate 66, which is formed in the central central region with a spherical cap-shaped counter surface 68. The bearing plate 66 carries an actuating lever 70 which is vertical when the bearing plate 66 is horizontal and which extends through a link insert 72 and protrudes upward from the housing. The link insert 72 has two intersecting guide slots 74, which limit the possibility of movement of the lever 70 to the longitudinal plane and the transverse plane.

Die vier Stellglieder 58 werden je mittels einer Feder 76 nach oben in Anlage an die Lagerplatte 66 gedrückt, die somit in der Horizontalstellung gehalten wird. Ein deckseitiger kompressibler Ring stabilisiert diese Position.The four actuators 58 are each pressed by means of a spring 76 upwards into contact with the bearing plate 66, which is thus held in the horizontal position. A compressible ring on the top stabilizes this position.

In koaxialer Verlängerung der zylindrischen Bohrungen 50 sind zwischen Bodenplatte 42 und Mittelplatte 44 im Durchmesser vergrößerte Kammern 80 gebildet, in denen sich kugelförmige Ventilkörper 82 befinden, die mittels Federn 84 an einen Ventilsitz 86 gedrückt werden. Die Bodenplatte 42 hat eine Umfangsnut 88, die die Kammern 80 miteinander verbindet und in die ihrerseits eine Längsnut 90 (FIG. 6) mündet, welche über eine Vertikalbohrung 92 mit dem Druckwasserversorgungsschlauch 38 in Verbindung steht. Die Druckkammern 80 sind somit ständig mit Druckwasser gefüllt. Wie am besten aus FIGUR 5 hervorgeht, haben die Stellglieder 58 Axialbohrungen, die unten stirnseitig münden. Diese Axialbohrungen stehen über Radialbohrungen mit dem Ringspalt zwischen Stellglied 58 und Einsatzhülse 56 in Verbindung und diese Ringräume kommunizieren über mindestens eine Radialbohrung 94 in der Einsatzhülse 56 sowie vier Radialbohrungen 96 in der Gehäusedeckplatte 46 mit der in dieser gebildeten Ringkammer 98.In coaxial extension of the cylindrical bores 50, chambers 80 with an enlarged diameter are formed between the base plate 42 and the middle plate 44, in which there are spherical valve bodies 82 which are pressed against a valve seat 86 by means of springs 84. The bottom plate 42 has a circumferential groove 88 which the chambers 80 together connects and into which in turn a longitudinal groove 90 (FIG. 6) opens, which is connected to the pressurized water supply hose 38 via a vertical bore 92. The pressure chambers 80 are thus constantly filled with pressurized water. As can best be seen from FIGURE 5, the actuators 58 have axial bores which open at the end face at the bottom. These axial bores are connected via radial bores to the annular gap between actuator 58 and insert sleeve 56, and these annular spaces communicate via at least one radial bore 94 in insert sleeve 56 and four radial bores 96 in housing cover plate 46 with the annular chamber 98 formed therein.

Die Entleerungsleitung 40 wird im Bereich der Deckplatte 46 in das Servoventilgehäuse eingeführt und ist über eine Axialbohrung 100 an das Entleerungskanalsystem angeschlossen. In der Neutralstellung des Handhebels 70 sind somit die Steuerkammern 102 oberhalb des Ventilsitzes 86 drucklos, da sie ständig mit dem Entleerungskanalsystem kommunizieren, das seinerseits die Entleerungsleitung 40 an das Mehrventilgehäuse 20 anschließt. Im Inneren des Mehrventilgehäuses 20 wird diese Entleerungsleitung an eine Gehäusemündung herangeführt, sodaß diese Leitung ständig in die Badewanne entleeren kann.The drain line 40 is inserted into the servo valve housing in the area of the cover plate 46 and is connected to the drain channel system via an axial bore 100. In the neutral position of the hand lever 70, the control chambers 102 above the valve seat 86 are therefore depressurized, since they constantly communicate with the drainage channel system, which in turn connects the drainage line 40 to the multi-valve housing 20. In the interior of the multi-valve housing 20, this drain line is brought up to a housing mouth, so that this line can constantly drain into the bathtub.

Wird nun der Hebel 70 des Handsteuergerätes 30 in einer der vier Richtungen verschwenkt, bewegt sich das ensprechende Stellglied 58 gegen die Wirkung der Rückstellfeder 76 abwärts, stößt dabei auf den Ventilkörper 82 und sperrt die Steuerkammer 102 gegenüber der Entleerungsleitung 40 ab. Das Stellglied 58 hebt dann den Ventilkörper 82 vom Ventilsitz 86 ab, sodaß der entsprechende Steuerschlauch 36 mit der Druckkammer 80 verbunden wird. Über diesen Steuerschlauch 36 fließt dem angeschlossenen Arbeitsventil im Mehrventilgehäuse 20 Druckwasser zu, das somit vorübergehend öffnet und eine der beiden hydraulischen Vorrichtungen 12 oder 19 betätigt. Dieses Arbeitsventil ist solange offen, wie der Handsteuerhebel 70 am Handsteuergerät 30 in ausgeschwenkter Stellung gehalten wird. Läßt man den Hebel 70 los, sorgt die Feder 76 des betätigten Stellgliedes 58 für eine Rückstellung des Stellgliedes, wodurch der Schließkörper 82 den entsprechenden Steuerschlauch 36 von der Druckwasserversorgung absperrt und ihn gleichzeitig mit der Entleerungsleitung 40 verbindet. Das in das Arbeitsventil im Mehrventilgehäuse 20 gelangte Druckwasser wird somit über die Steuerleitung 36 in das Handsteuergerät 30 zurückgedrückt, wofür eine mechanische Feder im Arbeitsventil sorgt. Das zurückgedrückte Wasser gelangt dann über die Entleerungsleitung 40 erneut in das Mehrwegeventil 20 und läuft von dort in die Wanne ab. Das Arbeitsventil schließt somit. Der Handsteuerhebel 70 hat seine Neutralposition wieder angenommen.If the lever 70 of the hand control device 30 is now pivoted in one of the four directions, the corresponding one moves Actuator 58 against the action of the return spring 76 downward, strikes the valve body 82 and blocks the control chamber 102 from the drain line 40. The actuator 58 then lifts the valve body 82 from the valve seat 86, so that the corresponding control hose 36 is connected to the pressure chamber 80. Via this control hose 36, the connected working valve in the multi-valve housing 20 receives pressurized water, which thus opens temporarily and actuates one of the two hydraulic devices 12 or 19. This working valve is open as long as the hand control lever 70 is held in the swung-out position on the hand control device 30. If you let go of the lever 70, the spring 76 of the actuated actuator 58 ensures that the actuator is reset, as a result of which the closing body 82 blocks the corresponding control hose 36 from the pressurized water supply and at the same time connects it to the drain line 40. The pressurized water that has entered the working valve in the multi-valve housing 20 is thus pressed back into the manual control device 30 via the control line 36, which is ensured by a mechanical spring in the working valve. The water that is pushed back then passes through the drain line 40 again into the multi-way valve 20 and runs from there into the tub. The working valve closes. The hand control lever 70 has returned to its neutral position.

Zur äußeren Form des Handsteuerventils 30 ist zu bemerken, daß es einen schmalen länglichen Handgriff 104 und einen verbreiterten und erhöhten Kopf 106 aufweist. Die Bodenplatte 42 des Gehäuses 30 ist über das Gehäuseoberteil hinaus verlängert. In diesem Verlängerungsteil wird eine Aufhängeöse 108 gebildet. Das Handsteuergerät 30 hat ohne Aufhängeöse 108 eine Länge von ca. 100 mm bis 110 mm. Die Breite des Handgriffes 104 beträgt 30 mm. Die FIGUREN 2 und 3 zeigen das Handsteuergerät 30 in natürlicher Größe.Regarding the external shape of the manual control valve 30, it should be noted that that it has a narrow elongated handle 104 and a widened and raised head 106. The bottom plate 42 of the housing 30 is extended beyond the upper housing part. A suspension eye 108 is formed in this extension part. The hand control device 30 has a length of approximately 100 mm to 110 mm without a suspension eye 108. The width of the handle 104 is 30 mm. FIGURES 2 and 3 show the hand control device 30 in natural size.

Claims (10)

In eine Badewanne einsetzbarer Lifter (10) für Behinderte, der ein Bodengestell (13), eine Hubplatte (16), ein diese mit dem Bodengestell (13) verbindendes Führungsgestell (14), sowie eine hydraulische Hubvorrichtung (12) mit Ventileinrichtung (20) aufweist, dadurch gekennzeichnet, daß die Ventileinrichtung (20) einschließlich ihrer Betätigungsmittel vollständig unterhalb der Bodenebene der Hubplatte (16) angeordnet ist und eine Anzahl ferrbetätigbarer Arbeitsventile umfaßt, daß ein Handsteuergerät (30) mittels einer Mehrzahl flexibler Schläuche an die Ventileinrichtung (20) angeschlossen ist, daß das Handsteuergerät (30) eine Anzahl im wesentlichen gleich ausgebildeter handbetätigbarer Servoventile (34) aufweist, die auf einer Seite eines Ventilsitzes (86) je eine Steuerkammer (102) aufweisen, in die einer der Schläuche (34) mündet, daß in jedem Servoventil (34) auf der anderen Seite des Ventilsitzes (86) eine Druckkammer (88) gebildet ist, daß die Druckkammern (80) aller Servoventile (34) an einen gemeinsamen Schlauch (38) der Mehrzahl von Schläuchen (36, 38) angeschlossen sind, daß alle Servoventile (34) hydraulisch und/oder mechanisch in Schließstellung vorgespannt sind, daß die Steuerkammer (102) jedes Servoventils (34) in dessen Schließstellung an eine Enteerungsleitung (40) angeschlossen ist und daß jedes Servoventil (34) ein von Hand betätigbares Stellglied (58) aufweist, das aus einer Ruhestellung gegen die Wirkung einer Rückstellkraft in eine oder mehrere Arbeitsstellungen bewegbar ist, in welcher oder welchen die Druckkammer (80) mit der Steuerkammer (102) kommuniziert, diese jedoch gegenüber der Entleerungsleitung (40) abgesperrt ist.Lifter (10) for the disabled, which can be inserted into a bathtub, which has a base frame (13), a lifting plate (16), a guide frame (14) connecting it to the base frame (13), and a hydraulic lifting device (12) with valve device (20) characterized in that the valve device (20) including its actuating means is arranged completely below the floor level of the lifting plate (16) and comprises a number of ferrule-operated working valves, that a manual control device (30) is connected to the valve device (20) by means of a plurality of flexible hoses is that the manual control device (30) has a number of substantially identically designed manually operable servo valves (34), each having a control chamber (102) on one side of a valve seat (86) into which one of the hoses (34) opens, that in each servo valve (34) is formed on the other side of the valve seat (86) a pressure chamber (88) that the pressure chambers (80) all Servo valves (34) are connected to a common hose (38) of the plurality of hoses (36, 38), that all servo valves (34) are hydraulically and / or mechanically biased in the closed position, that the control chamber (102) of each servo valve (34) in its closed position is connected to a drain line (40) and that each servo valve (34) has a manually operable actuator (58), which can be moved from a rest position against the action of a restoring force into one or more working positions, in which or which Pressure chamber (80) communicates with the control chamber (102), but this is blocked off from the drain line (40). Lifter nach Anspruch 1 dadurch gekennzeichnet, daß an der Hubplatte (16) eine Rückenlehne (18) schwenkbar angeordnet ist, an der eine hydraulische Schwenkvorrichtung (19) angreift und daß die Ventileinrichtung (20) mindestens vier Arbeitsventile und das Handsteuergerät (30) die gleiche Zahl von Servoventilen (34) aufweist, und daß je ein Arbeitsventil mit einem Servoventil (34) durch einen eigenen Steuerschlauch (36) verbunden ist.Lifter according to claim 1, characterized in that a backrest (18) is pivotally arranged on the lifting plate (16), on which a hydraulic pivoting device (19) engages and that the valve device (20) has at least four working valves and the manual control device (30) the same Number of servo valves (34), and that each working valve is connected to a servo valve (34) by its own control hose (36). Lifter nach Anspruch 1 oder 2 dadurch gekennzeichnet, daß jedes Servoventil (34) so ausgebildet ist, daß seine Steuerkammer (102) ständig entweder mit der Entleerungsleitung (40) oder mit der Druckkammer (80) verbunden ist.Lifter according to claim 1 or 2, characterized in that each servo valve (34) is designed such that its control chamber (102) is permanently connected either to the drain line (40) or to the pressure chamber (80). Lifter nach einem der Ansprüche 1 bis 3 dadurch gekennzeichnet, daß jedes Servoventil (34) einen federbetätigten, am Ventilsitz (86) anlegbaren Schließkörper (82) aufweist, der vom Stellglied (58) bewegbar ist und daß das aus seiner Ruhestellung herausbewegte Stellglied (58) die Steuerkammer (102) gegenüber der Entleerungsleitung (40) absperrt.Lifter according to one of claims 1 to 3, characterized in that each servo valve (34) has a spring-actuated closing body (82) which can be placed on the valve seat (86) and can be moved by the actuator (58) and that the actuator (58) which is moved out of its rest position ) shuts off the control chamber (102) from the drain line (40). Lifter nach Anspruch 4 dadurch gekennzeichnet, daß das Stellglied (58) eine stirnseitig mündende Axialbohrung aufweist, die über eine Radialbohrung mit der Entleerungsleitung (40) kommuniziert, daß das Stellglied (58) in seiner Ruhestellung vom Schließkörper (82) beabstandet ist, wobei die Axialbohrung des Stellgliedes (58) in der Steuerkammer (102) mündet und daß bei Betätigung des Servoventils (34) das Stellglied (58) während eines ersten Teilhubes am Schließkörper (82) zur Anlage kommt, wodurch die stirnseitige Mündung geschlossen wird und während des Resthubes den Schließkörper (82) vom Ventilsitz (86) abhebt.Lifter according to Claim 4, characterized in that the actuator (58) has an axial bore opening on the end face, which communicates with the drain line (40) via a radial bore, in that the actuator (58) is spaced apart from the closing body (82) in its rest position, the Axial bore of the actuator (58) opens into the control chamber (102) and that when the servo valve (34) is actuated, the actuator (58) comes into contact with the closing body (82) during a first partial stroke, as a result of which the end opening is closed and during the remaining stroke, the closing body (82) lifts off the valve seat (86). Lifter nach einem der Ansprüche 2 bis 5 dadurch gekennzeichnet, daß die vier Servoventile (34) achsparallel angeordnet sind und ihre Achsen die Ecken eines Quadrates schneiden.Lifter according to one of claims 2 to 5, characterized in that the four servo valves (34) are arranged axially parallel and their axes intersect the corners of a square. Lifter nach einem der Ansprüche 1 bis 6 dadurch gekennzeichnet, daß alle Servoventile (34) ein zentrales gemeinsames Handbetätigungsorgan (70) aufweisen, dem eine Mehrzahl von Schaltstellungen (74) zugeordnet ist.Lifter according to one of Claims 1 to 6, characterized in that all the servo valves (34) have a central, common manual control element (70) to which a plurality of switch positions (74) are assigned. Lifter nach Anspruch 7 dadurch gekennzeichnet, daß das Handbetätigungsorgan (70) ein kugelkalottenförmiges Lagerteil (66) aufweist, das an komplementären Kugeloberflächen (68) des Gehäuses (32) bzw. eines Gehäusekopfes (62,64) des Handsteuergerätes (30) in mindestens zwei zueinander senkrechten Ebenen schwenkbar gelagert ist und daß das Lagerteil (66) einen umfangsgeschlossenen Außenflansch oder mindestens vier umfangsverteilte Radialarme aufweist, der bzw. die die Stellglieder (58) der Servoventile (34) stirnseitig übergreifen.Lifter according to claim 7, characterized in that the manual actuating member (70) has a spherical cap-shaped bearing part (66) which in at least two on complementary spherical surfaces (68) of the housing (32) or a housing head (62, 64) of the manual control device (30) mutually perpendicular planes is pivotally mounted and that the bearing part (66) has a circumferentially closed outer flange or at least four circumferentially distributed radial arms which overlap the actuators (58) of the servo valves (34) on the end face. Lifter nach einem der Ansprüche 1 bis 8 dadurch gekennzeichnet, daß das Stellglied (58) jedes Servoventils (34) mittels einer Feder (76) in Ruhestellung vorgespannt ist und daß das nicht betätigte Handbetätigungsorgan (70) durch die Stellglieder (58) in Mittelstellung gehalten wird.Lifter according to one of claims 1 to 8, characterized in that the actuator (58) of each servo valve (34) is pretensioned in the rest position by means of a spring (76) and that the non-actuated manual actuating member (70) is held in the central position by the actuators (58) becomes. Lifter nach einem der Ansprüche 1 bis 9 dadurch gekennzeichnet, daß das Handbetätigungsorgan (70) einen aus dem Gehäuse (32) des Handsteuergerätes (30) herausragenden Schwenkhebel umfaßt, der in einer Kulisse (74) geführt ist, die zwei einander rechtwinklig kreuzende Führungsschlitze aufweist.Lifter according to one of Claims 1 to 9, characterized in that the manual actuating member (70) comprises a pivoting lever which projects from the housing (32) of the manual control device (30) and is guided in a link (74) which has two guide slots which intersect at right angles .
EP93103521A 1993-03-05 1993-03-05 Lift insertable in a bathtub Expired - Lifetime EP0619106B1 (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
AT93103521T ATE146671T1 (en) 1993-03-05 1993-03-05 LIFTER THAT CAN BE FITTED IN A BATHTUB
EP93103521A EP0619106B1 (en) 1993-03-05 1993-03-05 Lift insertable in a bathtub
DE59304901T DE59304901D1 (en) 1993-03-05 1993-03-05 Lifter that can be used in a bathtub
ES93103521T ES2096119T3 (en) 1993-03-05 1993-03-05 LIFT USABLE IN A BATHTUB.
US08/199,384 US5392474A (en) 1993-03-05 1994-02-18 Bathtub-insertable lifting apparatus
ZA941227A ZA941227B (en) 1993-03-05 1994-02-23 Bathtub-insertable lifting apparatus
AU56476/94A AU663457B2 (en) 1993-03-05 1994-03-01 Bathtub-insertable lifting apparatus
CA002116931A CA2116931A1 (en) 1993-03-05 1994-03-03 Bathtub-insertable lifting apparatus
JP6062063A JP2527408B2 (en) 1993-03-05 1994-03-07 Lifting device to put a physically handicapped person in the bathtub

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP93103521A EP0619106B1 (en) 1993-03-05 1993-03-05 Lift insertable in a bathtub

Publications (2)

Publication Number Publication Date
EP0619106A1 true EP0619106A1 (en) 1994-10-12
EP0619106B1 EP0619106B1 (en) 1996-12-27

Family

ID=8212663

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93103521A Expired - Lifetime EP0619106B1 (en) 1993-03-05 1993-03-05 Lift insertable in a bathtub

Country Status (9)

Country Link
US (1) US5392474A (en)
EP (1) EP0619106B1 (en)
JP (1) JP2527408B2 (en)
AT (1) ATE146671T1 (en)
AU (1) AU663457B2 (en)
CA (1) CA2116931A1 (en)
DE (1) DE59304901D1 (en)
ES (1) ES2096119T3 (en)
ZA (1) ZA941227B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0757199A1 (en) 1995-07-31 1997-02-05 Schmidt &amp; Lenhardt GmbH &amp; Co. oHG Shower head with integrated manual control lever for a bath lift for disabled persons
EP0757198A1 (en) 1995-07-31 1997-02-05 Schmidt &amp; Lenhardt GmbH &amp; Co. oHG Manual control lever for a bath lift

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6336230B1 (en) 2000-12-01 2002-01-08 Sylvia M. Lane Device for lifting persons into and out of a bathtub
ES2390722B1 (en) * 2011-02-24 2013-08-09 Javier MORENO BERTOMEU HYDRAULIC PLATFORM FOR CANINE BATHROOM WITH SUBJECTION OF THE PET TO THE ADJUSTABLE MOBILE SUPERIOR TRAY IN HEIGHT

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0310405A2 (en) * 1987-09-30 1989-04-05 Mangar Aids Limited Improvements in or relating to compressed air supply apparatus
EP0347652A2 (en) * 1988-06-23 1989-12-27 Schmidt &amp; Lenhardt GmbH &amp; Co. oHG Back support for seat and lounge chair plates
DE3908231A1 (en) * 1989-03-14 1990-09-20 Wolfgang Dentler Bathtub insert with lifting device

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3419044A (en) * 1965-09-29 1968-12-31 William A. Daniels Bath lift control valve
US3545013A (en) * 1969-05-23 1970-12-08 Harlen A Discoe Hydro bathtub safety aid

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0310405A2 (en) * 1987-09-30 1989-04-05 Mangar Aids Limited Improvements in or relating to compressed air supply apparatus
EP0347652A2 (en) * 1988-06-23 1989-12-27 Schmidt &amp; Lenhardt GmbH &amp; Co. oHG Back support for seat and lounge chair plates
DE3908231A1 (en) * 1989-03-14 1990-09-20 Wolfgang Dentler Bathtub insert with lifting device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0757199A1 (en) 1995-07-31 1997-02-05 Schmidt &amp; Lenhardt GmbH &amp; Co. oHG Shower head with integrated manual control lever for a bath lift for disabled persons
EP0757198A1 (en) 1995-07-31 1997-02-05 Schmidt &amp; Lenhardt GmbH &amp; Co. oHG Manual control lever for a bath lift

Also Published As

Publication number Publication date
DE59304901D1 (en) 1997-02-06
ATE146671T1 (en) 1997-01-15
JP2527408B2 (en) 1996-08-21
AU663457B2 (en) 1995-10-05
JPH06296648A (en) 1994-10-25
ES2096119T3 (en) 1997-03-01
EP0619106B1 (en) 1996-12-27
AU5647694A (en) 1994-09-08
US5392474A (en) 1995-02-28
ZA941227B (en) 1994-10-18
CA2116931A1 (en) 1994-09-06

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