EP1862094B1 - Height adjustable headrest device - Google Patents

Height adjustable headrest device Download PDF

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Publication number
EP1862094B1
EP1862094B1 EP07108477A EP07108477A EP1862094B1 EP 1862094 B1 EP1862094 B1 EP 1862094B1 EP 07108477 A EP07108477 A EP 07108477A EP 07108477 A EP07108477 A EP 07108477A EP 1862094 B1 EP1862094 B1 EP 1862094B1
Authority
EP
European Patent Office
Prior art keywords
crossbar
headrest
centering
centering bushing
supporting element
Prior art date
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Active
Application number
EP07108477A
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German (de)
French (fr)
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EP1862094A1 (en
Inventor
Alexander Grunow
David Hruza
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.)
Invacare Aquatec GmbH
Aquatec Operations GmbH
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Aquatec GmbH
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Publication date
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Publication of EP1862094A1 publication Critical patent/EP1862094A1/en
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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C7/00—Parts, details, or accessories of chairs or stools
    • A47C7/36—Support for the head or the back
    • A47C7/38—Support for the head or the back for the head
    • 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
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/10—Parts, details or accessories
    • A61G5/12—Rests specially adapted therefor, e.g. for the head or the feet
    • 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
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/10—Parts, details or accessories
    • A61G5/12—Rests specially adapted therefor, e.g. for the head or the feet
    • A61G5/121—Rests specially adapted therefor, e.g. for the head or the feet for head or neck

Definitions

  • the invention relates to a height-adjustable headrest device and a wheelchair with such a height-adjustable headrest device.
  • Height-adjustable headrest devices are known from the prior art. They are used, among other things, for seats in the medical field and in the care sector, for example also in wheelchairs.
  • a shower and toilet wheelchair with a height-adjustable headrest is under the product name OCEAN VIP of the AQUATEC GmbH, Alemannenstr. 10, 88316 Isny, Germany.
  • FIGS. 7 to 11 The height-adjustable headrest device of this known shower and toilet wheelchair is described below in connection with the FIGS. 7 to 11 described. It is understood that the illustrations in the figures of this application including said FIGS. 7 to 10 not to scale. For the purpose of better representation of certain details, the components are partially enlarged and simplified.
  • Fig. 7 shows a known height-adjustable headrest device 200 in a perspective view.
  • the device has a headrest 201, which is attached to a horizontal strut 202.
  • the headrest can be moved horizontally by loosening a clamping device 203, whereby the horizontal strut 202 has long since the shorter shaft 204A a J-shaped headrest support member 204 can be moved.
  • the headrest support member 204 is attached to a cross bar member 210 by a clamp connection 300.
  • the transverse rod element 210 can be, for example, the middle part of a push handle of a wheelchair.
  • the clamping connection 300 is, in each case partially cut, in Fig. 8 in a perspective view and in Fig. 10 shown in a side view, wherein in each case only a part of the headrest support member 204 and the transverse rod member 210 are shown.
  • the clamping connection 300 has a U-shaped retaining clip 360, which has two rectangular recesses 361A, 361B, through which the headrest support member 204, which is also rectangular in shape, can be inserted therethrough.
  • the inner radius of the U-shaped retaining clip 360 is dimensioned such that it is adapted to the outer diameter of the transverse rod element 210.
  • a spacer 370 is arranged, which is displaceably mounted in the headband 360 by means of a tongue and groove connection.
  • the corresponding grooves 362A and 362B of the retainer 360 are in FIG Fig. 9 shown.
  • a threaded bore 380 is mounted, in which a screw 390 is screwed.
  • the screw member 390 is provided with a cross handle (391), which allows a release and tightening of the clamp connection 300 by hand.
  • the retaining clip 360 is placed around the transverse rod element 210 in such a way that the threaded bore 380 is aligned with a bore 211 provided in the transverse rod element 210. Opposite the bore 211, a convex bulge 212 is provided in the transverse rod element 210.
  • the spacer 370 is inserted into the headband 360 and the headrest support member 204 inserted through the recesses 361 A, 361 B of the retaining clip 360 therethrough.
  • the screw 390 is screwed into the threaded hole 380 and thereby passed through the bore 211 of the rod member 210 until it abuts the bulge 212.
  • the clamp connection is released and the headrest support member 204 can be slid longitudinally relative to the headband 360 and thus to the crossbar member 210. As a result, a stepless height adjustment of the headrest 201 is achieved.
  • the invention has for its object to further improve the known height-adjustable headrest device, in particular with regard to functional and operational safety.
  • the invention provides a height-adjustable headrest device with a crossbar element and a headrest support member and a clamping connection for infinitely adjustable attachment of the headrest support member to the crossbar element, wherein the clamping connection has a two recesses and a threaded bore holding bracket which engages around the crossbar element, a centering bushing, having an external thread and an internal thread, wherein the centering bush is screwed into the threaded bore of the retaining clip, and a screw which is screwed into the centering, on, wherein the headrest support member is inserted into the recesses of the retaining clip, the transverse rod element has a bore in the centering bush is inserted, and the clamping connection by screwing the screw into the centering bushing and thereby bringing the headrest supporting element to the transverse bar element is effected.
  • the height-adjustable headrest device thus differs from the previously described known height-adjustable headrest device by the embodiment of the clamping connection, namely in that a centering bush is provided, which has an external thread and an internal thread. With its external thread, the centering bush is screwed into the threaded hole of the retaining clip. With a cylindrical centering the centering bush is inserted into a correspondingly executed bore of the crossbar member. The screw is screwed by means of the internal thread of the centering bushing with the clamp connection.
  • the direction of rotation of the internal thread of the centering bush is opposite to that of the external thread of the centering bushing.
  • the internal thread is designed as a left-hand thread
  • the external thread is designed as a right-hand thread. This avoids that the threaded bush is unintentionally unscrewed when operating the screw from the headband.
  • a spacer is arranged between the headrest support member and the transverse rod element, which is guided in a preferred embodiment via a tongue and groove connection in the headband.
  • the spacer is preferably made of plastic, in order to ensure a possible wear and play-free clamping.
  • the transverse rod element is preferably tubular. Opposite the bore for receiving the centering bush, an inwardly concave bulge is preferably provided in the transverse rod element, which acts as a counterweight for the screw.
  • the headrest support member and the corresponding recesses of the retaining bracket are preferably rectangular. It is understood that other shapes, such as circular or other rounded geometries are possible.
  • a wheelchair according to the invention with a height-adjustable headrest device according to the present invention is preferably designed so that the transverse rod element is designed as a push handle.
  • FIGS. 7 to 11 have been explained at the beginning. Unless otherwise described below, the relevant statements also apply to the height-adjustable headrest device according to the invention. Accordingly, in the FIGS. 1 to 6 those components which correspond to the respective known components in accordance with FIGS. 7 to 11 correspond, provided with reference numerals opposite to the respective corresponding reference numerals in the FIGS. 7 to 11 by the amount 200 are chosen smaller.
  • the headrest in the embodiment of the invention according to Fig. 1 assigned the reference numeral 1
  • the reference numeral 201 is used.
  • the crossbar element 10 according to the present invention basically corresponds to that according to the prior art described at the beginning. Only the bore 11 is executed differently in the crossbar element according to the invention, as explained below. In Fig. 11 therefore, for simplicity, both reference numerals 210 for the crossbar element according to the prior art and the reference numeral 10 are used for the transverse rod element according to the invention. The same applies to the reference numerals 211 and 11 for the bore and the reference numerals 212 and 12 for the bulge.
  • the clamping connection of the height-adjustable headrest device according to the invention has a centering bushing 20. This is in particular on the FIGS. 2 to 5 directed.
  • the centering bush 20 has an external thread 22 with which it can be screwed into the threaded bore 180 of the retaining clip 160.
  • As an attachment provided on the centering sleeve 20 Bund 25 is used.
  • the centering bush 20 also has a centering section 21 which is inserted into the bore 11 of the transverse rod element 10. It is understood that in the cross bar 10 of the clamping connection of the height-adjustable headrest device according to the invention, the bore 11 must be performed so that it is tuned as a sliding fit to the outer diameter of the centering 21 of the centering sleeve 20. In the prior art described at the outset, the bore 211 in contrast is dimensioned such that the threaded portion of the screw element 390 can be passed.
  • the centering bush 20 also has an internal thread 23 whose direction of rotation is opposite to that of the external thread 22. If the external thread 22 is designed as a right-hand thread, the internal thread 23 is designed as a left-hand thread. Accordingly, the internal thread 23 is designed as a left-hand thread when the external thread 22 is designed as a right-hand thread.
  • the threaded bushing 20 After screwing the threaded bushing 20 into the threaded bore 180 of the retaining clip 160, it can be inserted over the transverse rod element 10 such that the centering section 21 of the centering bushing 20 penetrates into the bore 11 of the transverse rod element 10.
  • the spacer 170 can then be inserted into the headband 160 and then the headrest support 4 is passed through the recesses 161a, 161b.
  • the screw 190 is screwed by means of the cross handle 191 in the centering sleeve 20 until it at the bulge 12 of the crossbar element 10 is applied.
  • the headrest support member 4 Upon further screwing the screw 190, the headrest support member 4 is clamped by the spacer 170 with the cross bar element 10.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Otolaryngology (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)
  • Seats For Vehicles (AREA)
  • Vehicle Body Suspensions (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)

Abstract

The device comprises a transverse bar, a head rest supporting element (4) and a clamp connection (100) for continuous adjusted fixing of the head rest supporting element at the transverse bar. The head rest supporting element is introduced in the recesses of a retainer, where the recesses are arranged one above the other. The transverse bar has a boring, which is introduced into a centering sleeve. The clamp connection is operated by screwing the screwing element in the centering sleeve, and head rest supporting element is introduced to the transverse bar. An independent claim is also included for a wheel chair with a height adjusting head rest device.

Description

Die Erfindung betrifft eine höhenverstellbare Kopfstützvorrichtung sowie einen Rollstuhl mit einer derartigen höhenverstellbaren Kopfstützvorrichtung.The invention relates to a height-adjustable headrest device and a wheelchair with such a height-adjustable headrest device.

Höhenverstellbare Kopfstützvorrichtungen sind aus dem Stand der Technik bekannt. Sie werden unter anderem bei Sitzen im medizinischen Bereich sowie im Pflegebereich verwendet, beispielsweise auch bei Rollstühlen. Ein Dusch- und Toilettenrollstuhl mit einer höhenverstellbaren Kopfstütze wird unter der Produktbezeichnung OCEAN VIP von der AQUATEC GmbH, Alemannenstr. 10, 88316 Isny, Deutschland, vertrieben.Height-adjustable headrest devices are known from the prior art. They are used, among other things, for seats in the medical field and in the care sector, for example also in wheelchairs. A shower and toilet wheelchair with a height-adjustable headrest is under the product name OCEAN VIP of the AQUATEC GmbH, Alemannenstr. 10, 88316 Isny, Germany.

Die höhenverstellbare Kopfstützvorrichtung dieses bekannten Dusch- und Toilettenrollstuhls wird nachfolgend in Verbindung mit den Figuren 7 bis 11 beschrieben. Es versteht sich, dass die Darstellungen in den Figuren dieser Anmeldung einschließlich besagter Figuren 7 bis 10 nicht maßstabsgetreu sind. Zum Zwecke der besseren Darstellung bestimmter Einzelheiten sind die Bauteile teilweise vergrößert und vereinfacht dargestellt.The height-adjustable headrest device of this known shower and toilet wheelchair is described below in connection with the FIGS. 7 to 11 described. It is understood that the illustrations in the figures of this application including said FIGS. 7 to 10 not to scale. For the purpose of better representation of certain details, the components are partially enlarged and simplified.

Fig. 7 zeigt eine bekannte höhenverstellbare Kopfstützvorrichtung 200 in einer perspektivischen Darstellung. Die Vorrichtung weist eine Kopfstütze 201 auf, welche an einer Horizontalstrebe 202 befestigt ist. Die Kopfstütze lässt sich horizontal verschieben, indem eine Klemmeinrichtung 203 gelöst wird, wodurch die Horizontalstrebe 202 längst des kürzeren Schaftes 204A an eines J-förmig ausgeführten Kopfstützenstützelements 204 verschoben werden kann. Fig. 7 shows a known height-adjustable headrest device 200 in a perspective view. The device has a headrest 201, which is attached to a horizontal strut 202. The headrest can be moved horizontally by loosening a clamping device 203, whereby the horizontal strut 202 has long since the shorter shaft 204A a J-shaped headrest support member 204 can be moved.

Das Kopfstützenstützelement 204 ist mittels einer Klemmverbindung 300 an einem Querstabelement 210 befestigt. Das Querstabelement 210 kann beispielsweise der Mittelteil eines Schiebegriffs eines Rollstuhls sein.The headrest support member 204 is attached to a cross bar member 210 by a clamp connection 300. The transverse rod element 210 can be, for example, the middle part of a push handle of a wheelchair.

Die Klemmverbindung 300 ist, jeweils teilweise aufgeschnitten, in Fig. 8 in einer perspektivischen Darstellung und in Fig. 10 in einer Seitenansicht gezeigt, wobei jeweils nur ein Teil des Kopfstützenstützelements 204 sowie des Querstabelements 210 gezeigt sind.The clamping connection 300 is, in each case partially cut, in Fig. 8 in a perspective view and in Fig. 10 shown in a side view, wherein in each case only a part of the headrest support member 204 and the transverse rod member 210 are shown.

Die Klemmverbindung 300 weist einen U-förmigen Haltebügel 360 auf, der über zwei rechteckige Ausnehmungen 361A, 361B verfügt, durch welche das Kopfstützenstützelement 204, das ebenfalls rechteckig ausgebildet ist, hindurch gesteckt werden kann. Der Innenradius des U-förmig ausgebildeten Haltebügels 360 ist so bemessen, dass er dem Außendurchmesser des Querstabelements 210 angepasst ist. Zwischen dem Querstabelement 210 und dem Kopfstützenstützelement 204 ist ein Distanzstück 370 angeordnet, das verschiebbar mittels einer Nut/Feder-Verbindung in dem Haltebügel 360 gelagert ist. Die entsprechenden Nuten 362A und 362B des Haltebügels 360 sind in Fig. 9 gezeigt.The clamping connection 300 has a U-shaped retaining clip 360, which has two rectangular recesses 361A, 361B, through which the headrest support member 204, which is also rectangular in shape, can be inserted therethrough. The inner radius of the U-shaped retaining clip 360 is dimensioned such that it is adapted to the outer diameter of the transverse rod element 210. Between the cross bar element 210 and the headrest support member 204, a spacer 370 is arranged, which is displaceably mounted in the headband 360 by means of a tongue and groove connection. The corresponding grooves 362A and 362B of the retainer 360 are in FIG Fig. 9 shown.

In dem Haltebügel 360 ist eine Gewindebohrung 380 angebracht, in die ein Schraubelement 390 eingeschraubt ist.In the headband 360, a threaded bore 380 is mounted, in which a screw 390 is screwed.

Das Schraubelement 390 ist mit einem Kreuzgriff (391) versehen, welches ein Lösen und Festziehen der Klemmverbindung 300 von Hand ermöglicht.The screw member 390 is provided with a cross handle (391), which allows a release and tightening of the clamp connection 300 by hand.

Die Funktion der bekannten Klemmverbindung wird nachfolgend erläutert. Wie insbesondere in den Figuren 8 und 10 dargestellt, wird der Haltebügel 360 so um das Querstabelement 210 gelegt, dass die Gewindebohrung 380 mit einer in dem Querstabelement 210 angebrachten Bohrung 211 fluchtet. Gegenüber der Bohrung 211 ist in dem Querstabelement 210 eine zur Innenseite hin konkave Ausbuchtung 212 vorgesehen.The function of the known clamping connection will be explained below. As in particular in the FIGS. 8 and 10 1, the retaining clip 360 is placed around the transverse rod element 210 in such a way that the threaded bore 380 is aligned with a bore 211 provided in the transverse rod element 210. Opposite the bore 211, a convex bulge 212 is provided in the transverse rod element 210.

Das Distanzstück 370 wird in den Haltebügel 360 eingefügt und das Kopfstützenstützelement 204 durch die Ausnehmungen 361A, 361B des Haltebügels 360 hindurch gesteckt. Das Schraubelement 390 wird in die Gewindebohrung 380 eingeschraubt und hierbei durch die Bohrung 211 des Stabelements 210 hindurchgeführt, bis es an der Ausbuchtung 212 anliegt. Bei weiterem Einschrauben des Schraubelements 390 wird der Haltebügel 360 gegenüber dem Stabelement 210 in Fig. 10 nach rechts bewegt, wodurch das Kopfstützenstützelement 204 gegen das Distanzstück 370 und das Distanzstück 370 gegen das Querstabelement 210 gedrückt wird. Hierdurch entsteht eine Klemmverbindung, die eine sichere Positionierung des Kopfstützenstützelements 204 gegenüber dem Querstabelement 210 bereitstellt.The spacer 370 is inserted into the headband 360 and the headrest support member 204 inserted through the recesses 361 A, 361 B of the retaining clip 360 therethrough. The screw 390 is screwed into the threaded hole 380 and thereby passed through the bore 211 of the rod member 210 until it abuts the bulge 212. Upon further screwing the screw 390 of the headband 360 relative to the rod member 210 in Fig. 10 moved to the right, whereby the headrest support member 204 is pressed against the spacer 370 and the spacer 370 against the cross bar element 210. This results in a clamping connection, which provides a secure positioning of the headrest support member 204 relative to the cross bar element 210.

Wenn das Schraubelement 390 geringfügig aus dem Haltebügel 360 herausgeschraubt wird, wir die Klemmverbindung gelöst und das Kopfstützenstützelement 204 kann gegenüber dem Haltebügel 360 und somit gegenüber dem Querstabelement 210 in Längsrichtung verschoben werden. Hierdurch wird eine stufenlose Höhenverstellung der Kopfstütze 201 erreicht.When the screw member 390 is slightly unscrewed from the headband 360, the clamp connection is released and the headrest support member 204 can be slid longitudinally relative to the headband 360 and thus to the crossbar member 210. As a result, a stepless height adjustment of the headrest 201 is achieved.

Der Erfindung liegt die Aufgabe zugrunde, die bekannte höhenverstellbare Kopfstützvorrichtung weiter zu verbessern, insbesondere hinsichtlich Funktions- und Betriebssicherheit.The invention has for its object to further improve the known height-adjustable headrest device, in particular with regard to functional and operational safety.

Zur Lösung dieser Aufgabe stellt die Erfindung eine höhenverstellbare Kopfstützvorrichtung bereit mit einem Querstabelement und einem Kopfstützenstützelement sowie einer Klemmverbindung zur stufenlos verstellbaren Befestigung des Kopfstützenstützelements an dem Querstabelement, wobei die Klemmverbindung einen zwei Aussparungen sowie eine Gewindebohrung aufweisenden Haltebügel, der das Querstabelement umgreift, eine Zentrierbuchse, die ein Außengewinde und ein Innengewinde aufweist, wobei die Zentrierbuchse in die Gewindebohrung des Haltebügels eingeschraubt ist, und ein Schraubelement, das in die Zentrierbuchse eingeschraubt ist, auf, wobei das Kopfstützenstützelement in die Aussparungen des Haltebügels eingeführt ist, das Querstabelement eine Bohrung aufweist, in die die Zentrierbuchse eingeführt ist, und die Klemmverbindung durch Einschrauben des Schraubelements in die Zentrierbuchse und das hierdurch bewirkte Heranführen des Kopfstützenstützelements an das Querstabelement bewirkt wird.To achieve this object, the invention provides a height-adjustable headrest device with a crossbar element and a headrest support member and a clamping connection for infinitely adjustable attachment of the headrest support member to the crossbar element, wherein the clamping connection has a two recesses and a threaded bore holding bracket which engages around the crossbar element, a centering bushing, having an external thread and an internal thread, wherein the centering bush is screwed into the threaded bore of the retaining clip, and a screw which is screwed into the centering, on, wherein the headrest support member is inserted into the recesses of the retaining clip, the transverse rod element has a bore in the centering bush is inserted, and the clamping connection by screwing the screw into the centering bushing and thereby bringing the headrest supporting element to the transverse bar element is effected.

Die erfindungsgemäße höhenverstellbare Kopfstützvorrichtung unterscheidet sich somit von der zuvor erläuterten bekannten höhenverstellbaren Kopfstützvorrichtung durch die Ausführung der Klemmverbindung, nämlich dadurch, dass eine Zentrierbuchse vorgesehen ist, welche ein Außengewinde und ein Innengewinde aufweist. Mit seinem Außengewinde ist die Zentrierbuchse in die Gewindebohrung des Haltebügels eingeschraubt. Mit einem zylindrischen Zentrierabschnitt ist die Zentrierbuchse in eine entsprechend ausgeführte Bohrung des Querstabelements eingeführt. Das Schraubelement wird mittels des Innengewindes der Zentrierbuchse mit der Klemmverbindung verschraubt.The height-adjustable headrest device according to the invention thus differs from the previously described known height-adjustable headrest device by the embodiment of the clamping connection, namely in that a centering bush is provided, which has an external thread and an internal thread. With its external thread, the centering bush is screwed into the threaded hole of the retaining clip. With a cylindrical centering the centering bush is inserted into a correspondingly executed bore of the crossbar member. The screw is screwed by means of the internal thread of the centering bushing with the clamp connection.

Durch die Bereitstellung der Zentrierbuchse wird eine besonders exakte Lagerung und Fixierung der Bauteile zueinander gewährleistet.By providing the centering a particularly accurate storage and fixation of the components is guaranteed to each other.

In einer bevorzugten Ausführungsform der Erfindung ist die Drehrichtung des Innengewindes der Zentrierbuchse derjenigen des Außengewindes der Zentrierbuchse entgegengesetzt. Ist beispielsweise das Innengewinde als Linksgewinde ausgeführt, so ist das Außengewinde als Rechtsgewinde ausgeführt. Hierdurch wird vermieden, dass die Gewindebuchse beim Betätigen des Schraubelements unbeabsichtigt aus dem Haltebügel herausgeschraubt wird.In a preferred embodiment of the invention, the direction of rotation of the internal thread of the centering bush is opposite to that of the external thread of the centering bushing. For example, if the internal thread is designed as a left-hand thread, then the external thread is designed as a right-hand thread. This avoids that the threaded bush is unintentionally unscrewed when operating the screw from the headband.

Vorzugsweise ist zwischen den Kopfstützenstützelement und dem Querstabelement ein Distanzstück angeordnet, welches in einer bevorzugten Ausführungsform über eine Nut/Feder-Verbindung in dem Haltebügel geführt ist. Das Distanzstück ist vorzugsweise aus Kunststoff gefertigt, um eine möglichst verschleiß- und spielfreie Klemmung zu gewährleisten.Preferably, a spacer is arranged between the headrest support member and the transverse rod element, which is guided in a preferred embodiment via a tongue and groove connection in the headband. The spacer is preferably made of plastic, in order to ensure a possible wear and play-free clamping.

Das Querstabelement ist vorzugsweise rohrförmig ausgebildet. Gegenüber der Bohrung zur Aufnahme der Zentrierbuchse ist in dem Querstabelement vorzugsweise eine nach innen konkave Ausbuchtung vorgesehen, die als Widerlage für das Schraubelement fungiert.The transverse rod element is preferably tubular. Opposite the bore for receiving the centering bush, an inwardly concave bulge is preferably provided in the transverse rod element, which acts as a counterweight for the screw.

Das Kopfstützenstützelement und die entsprechenden Aussparungen des Haltebügels sind vorzugsweise rechteckig ausgebildet. Es versteht sich, dass auch andere Formen, beispielsweise kreisförmige oder andere abgerundete Geometrien möglich sind.The headrest support member and the corresponding recesses of the retaining bracket are preferably rectangular. It is understood that other shapes, such as circular or other rounded geometries are possible.

Ein erfindungsgemäße Rollstuhl mit einer höhenverstellbaren Kopfstützvorrichtung gemäß der vorliegenden Erfindung ist vorzugsweise so ausgebildet, dass das Querstabelement als Schiebegriff ausgebildet ist.A wheelchair according to the invention with a height-adjustable headrest device according to the present invention is preferably designed so that the transverse rod element is designed as a push handle.

Die Erfindung wird im folgenden anhand eines bevorzugten Ausführungsbeispiels unter Bezug auf die Zeichnungen näher erläutert, in der

  • Fig. 1 eine perspektivische Darstellung einer erfindungsgemäßen höhenverstellbaren Kopfstützvorrichtung ist,
  • Fig. 2 eine schematische Darstellung der Klemmverbindung ist, wobei zum Zwecke der Darstellung das Querstabelement weggelassen ist,
  • Fig. 3 eine Explosionszeichnung eines Distanzstücks, der Zentrierbuchse, des Haltebügels und Schraubelement ist,
  • Fig. 4 eine perspektivische Darstellung der Zentrierbuchse ist,
  • Fig. 5 eine Schnittdarstellung der Zentrierbuchse ist,
  • Fig. 6 eine axiale Draufsicht der Fixierbuchse ist,
  • Fig. 7 eine Fig. 1 entsprechende perspektivische Darstellung einer bekannten höhenverstellbaren Kopfstützvorrichtung ist,
  • Fig. 8 eine teilweise im Schnitt gehaltene Darstellung einer bekannten Ausführungsform einer Klemmverbindung ist,
  • Fig. 9 eine vergrößerte perspektivische Darstellung eine bekannten Haltebügels ist,
  • Fig. 10 eine teilweise im Schnitt gehaltene Seitenansicht einer bekannten Klemmverbindung ist, und
  • Fig. 11 eine perspektivische Schnittdarstellung eines Querstabelements ist.
The invention will be explained below with reference to a preferred embodiment with reference to the drawings, in which
  • Fig. 1 is a perspective view of a height-adjustable headrest device according to the invention,
  • Fig. 2 is a schematic representation of the clamp connection, wherein for the purpose of illustration, the cross bar element is omitted,
  • Fig. 3 an exploded view of a spacer, the centering, the retaining clip and screw is,
  • Fig. 4 is a perspective view of the centering,
  • Fig. 5 is a sectional view of the centering bush,
  • Fig. 6 is an axial plan view of the fixing bush,
  • Fig. 7 a Fig. 1 corresponding perspective view of a known height-adjustable headrest device,
  • Fig. 8 is a partially sectioned view of a known embodiment of a clamping connection,
  • Fig. 9 an enlarged perspective view of a known retaining clip,
  • Fig. 10 is a partially sectioned side view of a known clamping connection, and
  • Fig. 11 is a perspective sectional view of a transverse rod element.

Die Figuren 7 bis 11 sind eingangs erläutert worden. Soweit im Folgenden nicht anderweitig beschrieben, treffen die diesbezüglichen Ausführungen auch auf die erfindungsgemäße höhenverstellbare Kopfstützvorrichtung zu. Entsprechend sind in den Figuren 1 bis 6 diejenigen Bauteile, die den jeweiligen bekannten Bauteilen gemäß den Figuren 7 bis 11 entsprechen, mit Bezugzeichen versehen, die gegenüber den jeweils entsprechenden Bezugszeichen in den Figuren 7 bis 11 um den Betrag 200 kleiner gewählt sind. So ist beispielsweise der Kopfstütze bei dem Ausführungsbeispiel der Erfindung gemäß Fig. 1 das Bezugszeichen 1 zugeordnet, während für die Kopfstütze des bekannten Ausführungsbeispiels gemäß Fig. 7 das Bezugszeichen 201 verwendet ist.The FIGS. 7 to 11 have been explained at the beginning. Unless otherwise described below, the relevant statements also apply to the height-adjustable headrest device according to the invention. Accordingly, in the FIGS. 1 to 6 those components which correspond to the respective known components in accordance with FIGS. 7 to 11 correspond, provided with reference numerals opposite to the respective corresponding reference numerals in the FIGS. 7 to 11 by the amount 200 are chosen smaller. For example, the headrest in the embodiment of the invention according to Fig. 1 assigned the reference numeral 1, while according to the headrest of the known embodiment Fig. 7 the reference numeral 201 is used.

Das Querstabelement 10 gemäß der vorliegenden Erfindung entspricht grundsätzlich demjenigen gemäß dem eingangs beschriebenen Stand der Technik. Lediglich die Bohrung 11 ist bei dem erfindungsgemäßen Querstabelement anders ausgeführt, wie nachfolgend erläutert. In Fig. 11 sind daher der Einfachheit halber beide Bezugszeichen 210 für das Querstabelement gemäß Stand der Technik und das Bezugszeichen 10 für das erfindungsgemäße Querstabselement verwendet. Entsprechendes gilt für die Bezugszeichen 211 und 11 für die Bohrung sowie die Bezugszeichen 212 und 12 für die Ausbuchtung.The crossbar element 10 according to the present invention basically corresponds to that according to the prior art described at the beginning. Only the bore 11 is executed differently in the crossbar element according to the invention, as explained below. In Fig. 11 Therefore, for simplicity, both reference numerals 210 for the crossbar element according to the prior art and the reference numeral 10 are used for the transverse rod element according to the invention. The same applies to the reference numerals 211 and 11 for the bore and the reference numerals 212 and 12 for the bulge.

Wie zuvor beschrieben, weist die Klemmverbindung der erfindungsgemäßen höhenverstellbaren Kopfstützvorrichtung eine Zentrierbuchse 20 auf. Hierzu wird insbesondere auf die Figuren 2 bis 5 verwiesen. Die Zentrierbuchse 20 verfügt über ein Außengewinde 22, mit dem sie in die Gewindebohrung 180 des Haltebügels 160 eingeschraubt werden kann. Als Anlage dient ein an der Zentrierbuchse 20 vorgesehener Bund 25.As described above, the clamping connection of the height-adjustable headrest device according to the invention has a centering bushing 20. This is in particular on the FIGS. 2 to 5 directed. The centering bush 20 has an external thread 22 with which it can be screwed into the threaded bore 180 of the retaining clip 160. As an attachment provided on the centering sleeve 20 Bund 25 is used.

Die Zentrierbuchse 20 verfügt zudem über einen Zentrierabschnitt 21, der in die Bohrung 11 des Querstabelements 10 eingeführt ist. Es versteht sich, dass bei dem Querstabelement 10 der Klemmverbindung der erfindungsgemäßen höhenverstellbaren Kopfstützvorrichtung die Bohrung 11 so ausgeführt werden muss, dass sie als Gleitpassung auf den Außendurchmesser des Zentrierabschnitts 21 der Zentrierbuchse 20 abgestimmt ist. Beim eingangs erläuterten Stand der Technik ist die Bohrung 211 demgegenüber so bemessen, dass der Gewindeabschnitt des Schraubelements 390 hindurchgeführt werden kann.The centering bush 20 also has a centering section 21 which is inserted into the bore 11 of the transverse rod element 10. It is understood that in the cross bar 10 of the clamping connection of the height-adjustable headrest device according to the invention, the bore 11 must be performed so that it is tuned as a sliding fit to the outer diameter of the centering 21 of the centering sleeve 20. In the prior art described at the outset, the bore 211 in contrast is dimensioned such that the threaded portion of the screw element 390 can be passed.

Das Einschrauben der Zentrierbuchse 20 in die Gewindebohrung 180 des Haltebügels 160 wird durch eine Nut 26 erleichtert, in die ein Schraubendreher angesetzt werden kann.The screwing of the centering bushing 20 in the threaded hole 180 of the retaining clip 160 is facilitated by a groove 26 into which a screwdriver can be attached.

Die Zentrierbuchse 20 verfügt zudem über ein Innengewinde 23, dessen Drehrichtung derjenigen des Außengewindes 22 entgegensetzt ist. Wenn das Außengewinde 22 als Rechtsgewinde ausgeführt ist, ist das Innengewinde 23 als Linksgewinde ausgeführt. Entsprechend wird das Innengewinde 23 als Linksgewinde ausgeführt, wenn das Außengewinde 22 als Rechtsgewinde ausgeführt ist.The centering bush 20 also has an internal thread 23 whose direction of rotation is opposite to that of the external thread 22. If the external thread 22 is designed as a right-hand thread, the internal thread 23 is designed as a left-hand thread. Accordingly, the internal thread 23 is designed as a left-hand thread when the external thread 22 is designed as a right-hand thread.

Nach dem Einschrauben der Gewindebuchse 20 in die Gewindebohrung 180 des Haltebügels 160 kann dieser so über das Querstabelement 10 gesteckt werden, dass der Zentrierabschnitt 21 der Zentrierbuchse 20 in die Bohrung 11 des Querstabelements 10 eindringt. Das Distanzstück 170 kann dann in den Haltebügel 160 eingeführt werden und anschließend wird das Kopfstützenstützelement 4 durch die Ausnehmungen 161a, 161b hindurchgeführt. Schließlich wird das Schraubelement 190 mittels des Kreuzgriffs 191 in die Zentrierbuchse 20 eingeschraubt, bis es an der Ausbuchtung 12 des Querstabelements 10 anliegt. Bei weiterem Einschrauben des Schraubelements 190 wird das Kopfstützenstützelement 4 über das Distanzstück 170 mit dem Querstabelement 10 verklemmt.After screwing the threaded bushing 20 into the threaded bore 180 of the retaining clip 160, it can be inserted over the transverse rod element 10 such that the centering section 21 of the centering bushing 20 penetrates into the bore 11 of the transverse rod element 10. The spacer 170 can then be inserted into the headband 160 and then the headrest support 4 is passed through the recesses 161a, 161b. Finally, the screw 190 is screwed by means of the cross handle 191 in the centering sleeve 20 until it at the bulge 12 of the crossbar element 10 is applied. Upon further screwing the screw 190, the headrest support member 4 is clamped by the spacer 170 with the cross bar element 10.

Claims (11)

  1. Height adjustable headrest device with a crossbar element (10) and a headrest supporting element (4) as well as a clamp connection (100) for continuously variable mounting of the headrest supporting element (4) at the crossbar element (10), wherein the clamp connection (100) comprises:
    a retaining clamp (160) comprising two recesses (161A, 162B) as well as a tapped bore (180), the retaining clamp (160) gripping around the crossbar element (10),
    a centering bushing (20) comprising an external thread (22) and an internal thread (23), wherein the centering bushing (20) is screwed in the tapped bore (180) of the retaining clamp (160), and
    a screw element (190) screwed in the centering bushing (20),
    wherein the headrest supporting element (4) is inserted in the recesses (161A, 161B) of the retaining clamp (160), the crossbar element (10) comprises a bore (11) in which the centering bushing (20) is inserted, and the clamp connection (100) is caused by screwing in of the screw element (190) into the centering bushing (20) and thus bringing the headrest supporting element (4) near the crossbar element (10).
  2. Device according to claim 1, characterized in that the sense of rotation of the internal thread (23) is opposed to that of the external thread (22).
  3. Device according to claim 1 or 2, characterized in that the centering bushing (20) comprises a collar (25) which provides a stop when it is screwed in.
  4. Device according to one of claims 1 to 3, characterized in that the centering bushing (20) comprises a groove (26) which is designed for setting a screwdriver.
  5. Device according to one of claims 1 to 4, characterized in that a spacer (170) is arranged between the headrest supporting element (4) and the crossbar element (10).
  6. Device according to claim 5, characterized in that the spacer (170) is guided via a groove and tongue connection in the retaining clamp (160).
  7. Device according to claim 5 or 6, characterized in that the spacer (170) is made of plastics.
  8. Device according to one of the preceding claims, characterized in that the crossbar element (10) has a tubular design.
  9. Device according to claim 8, characterized in that a bulging (12) which is concave to the inside which serves as abutment for the screw element (190) is provided in the tubular crossbar element (10) opposite the bore (11) for receiving the centering bushing (20).
  10. Device according to one of the preceding claims, characterized in that the headrest supporting element (4) and the recesses (161A, 161B) of the retaining clamp (160) have a rectangular design.
  11. Wheel chair with a height adjustable headrest device according to one of the preceding claims, characterized in that the crossbar element (10) is designed as push handle.
EP07108477A 2006-06-01 2007-05-18 Height adjustable headrest device Active EP1862094B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102006026055A DE102006026055B3 (en) 2006-06-01 2006-06-01 Height adjusting head rest device for use with seats, comprises transverse bar, head rest supporting element and clamp connection for continuous adjusted fixing of supporting element, which is introduced in recesses of retainer

Publications (2)

Publication Number Publication Date
EP1862094A1 EP1862094A1 (en) 2007-12-05
EP1862094B1 true EP1862094B1 (en) 2008-10-29

Family

ID=38421587

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07108477A Active EP1862094B1 (en) 2006-06-01 2007-05-18 Height adjustable headrest device

Country Status (7)

Country Link
US (1) US20080018159A1 (en)
EP (1) EP1862094B1 (en)
AT (1) ATE412353T1 (en)
CA (1) CA2589024C (en)
DE (2) DE102006026055B3 (en)
DK (1) DK1862094T3 (en)
PT (1) PT1862094E (en)

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* Cited by examiner, † Cited by third party
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CN102679110A (en) * 2012-05-18 2012-09-19 江苏格雷特机器人有限公司 Hack lever
CN104433387A (en) * 2014-11-19 2015-03-25 成都实景信息技术有限公司 Equipment facilitating work of staffs
TWM501578U (en) * 2015-02-13 2015-05-21 Au Optronics Corp Display device
US10219966B2 (en) * 2016-12-09 2019-03-05 Kavo Dental Technologies, Llc Headrest adjustment system
RU181242U1 (en) * 2017-08-21 2018-07-06 Алексей Валентинович Макаровский UNIVERSAL HEADREST
USD972981S1 (en) * 2020-06-15 2022-12-20 Rolapal Limited Headrest support for a wheelchair

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US2560951A (en) * 1948-10-18 1951-07-17 Clover Ind Inc Embedded screw-threaded socket
US3618135A (en) * 1970-02-06 1971-11-02 Avco Corp Variable capacitor of the locking type
GB8323143D0 (en) * 1983-08-27 1983-09-28 Oxley R F Tuning screw
US4618299A (en) * 1984-03-07 1986-10-21 Mcgard, Inc. Locknut and key therefor
US4822223A (en) * 1987-09-23 1989-04-18 Williams William L Wood insert
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JP2864925B2 (en) * 1992-12-28 1999-03-08 日産自動車株式会社 Mounting structure of steering member
SE509703C2 (en) * 1995-02-07 1999-03-01 Sven Olerud Two devices for locking two implant elements to each other
US5967613A (en) * 1997-08-11 1999-10-19 Piccard Corporation Wheelchair support and attachment system
US5964767A (en) * 1997-09-12 1999-10-12 Tapia; Eduardo Armando Hollow sealable device for temporary or permanent surgical placement through a bone to provide a passageway into a cavity or internal anatomic site in a mammal
US6478518B1 (en) * 2002-01-31 2002-11-12 Sunny Hwang Barrel nut
US6761338B2 (en) * 2002-10-16 2004-07-13 Ryuji Yamasaki Chuck structure for joining headrest to wheelchair
US7207630B1 (en) * 2004-03-26 2007-04-24 Robert Reynolds Removable adjustable headrest for wheelchairs having a neck roll
JP4584643B2 (en) * 2004-07-16 2010-11-24 株式会社ユーキ・トレーディング Retrofit headrest support mechanism for wheelchair
DE102005001866B4 (en) * 2005-01-14 2009-01-02 Aquatec Gmbh Footrest for wheelchairs or the like

Also Published As

Publication number Publication date
EP1862094A1 (en) 2007-12-05
CA2589024C (en) 2009-10-27
DK1862094T3 (en) 2009-03-02
PT1862094E (en) 2009-02-09
US20080018159A1 (en) 2008-01-24
DE502007000201D1 (en) 2008-12-11
ATE412353T1 (en) 2008-11-15
DE102006026055B3 (en) 2007-11-22
CA2589024A1 (en) 2007-12-01

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