US20080018159A1 - Height adjustable headrest device - Google Patents

Height adjustable headrest device Download PDF

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Publication number
US20080018159A1
US20080018159A1 US11/809,634 US80963407A US2008018159A1 US 20080018159 A1 US20080018159 A1 US 20080018159A1 US 80963407 A US80963407 A US 80963407A US 2008018159 A1 US2008018159 A1 US 2008018159A1
Authority
US
United States
Prior art keywords
centering bushing
crossbar
clamp
headrest
retaining clamp
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.)
Abandoned
Application number
US11/809,634
Other languages
English (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.)
Aquatec GmbH
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Assigned to AQUATEC GMBH reassignment AQUATEC GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: GRUNOW, ALEXANDER, HRUZA, DAVID
Publication of US20080018159A1 publication Critical patent/US20080018159A1/en
Abandoned legal-status Critical Current

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Classifications

    • 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 as well as a wheel chair with such a height adjustable headrest device.
  • Height adjustable headrest devices are known from prior art. They are used, among others, with seats in the medical field as well as in the field of care, for example also in wheel chairs.
  • a shower and toilet wheel chair with a height adjustable headrest is distributed under the product name OCEAN VIP by the AQUATEC GmbH, Alemannenstr. 10, 88316 Isny, Germany.
  • FIGS. 7 to 11 The height adjustable headrest device of this known shower and toilet wheel chair will be described below in connection with FIGS. 7 to 11 . It is to be understood that the representations in the figures of this application including said FIGS. 7 to 10 are not drawn to scale. For a better representation of certain details, the representation of some components is enlarged and simplified.
  • FIG. 7 shows a known height adjustable headrest device 200 in a perspective representation.
  • the device comprises a headrest 201 which is fixed to a horizontal bar 202 .
  • the headrest can be shifted horizontally by releasing a clamping device 203 whereby the horizontal bar 202 can be shifted along the shorter shank 204 A of a headrest supporting element 204 designed in the shape of a J.
  • the headrest supporting element 204 is fixed to a crossbar element 210 by means of a clamp connection 300 .
  • the crossbar element 210 can, for example, be the central part of a push handle of a wheel chair.
  • the clamp connection 300 is shown in FIG. 8 in a perspective representation and in FIG. 10 in a side view, in each case partially cut open, where in each case only a part of the headrest supporting element 204 as well as the crossbar element 210 is shown.
  • the clamp connection 300 comprises a U-shaped retaining clamp 360 having two rectangular recesses 361 A, 361 B, through which the headrest supporting element 204 , which also has a rectangular design, can be inserted.
  • the internal radius of the retaining clamp 360 having a U-shaped design is dimensioned such that it is adapted to the outside diameter of the crossbar element 210 .
  • a spacer 370 is arranged which is held in the retaining clamp 360 by means of a groove and tongue connection so as to be shifted.
  • the corresponding grooves 362 A and 362 B of the retaining clamp 360 are shown in FIG. 9 .
  • a tapped bore 380 is provided in the retaining clamp 360 in which a screw element 390 is screwed in.
  • the screw element 390 is provided with a star handle 391 which permits manual release and tightening of the clamp connection 300 .
  • the retaining clamp 360 is placed around the crossbar element 210 such that the tapped bore 380 is flush with a bore 211 provided in the crossbar element 210 .
  • a bulging 212 concave to the inner surface is provided in the crossbar element 210 .
  • the spacer 370 is inserted into the retaining clamp 360 and the headrest supporting element 204 is inserted through the recesses 361 A, 361 B of the retaining clamp 360 .
  • the screw element 390 is screwed into the tapped bore 380 and in the process inserted through the bore 211 of the bar element 210 until it lies against the bulging 212 .
  • the retaining clamp 360 is moved to the right with respect to the bar element 210 in FIG. 10 , which causes the headrest supporting element 204 to be pressed against the spacer 370 and the spacer 370 to be pressed against the crossbar element 210 .
  • a clamp connection is formed which provides secure positioning of the headrest supporting element 204 with respect to the crossbar element 210 .
  • the screw element 390 is slightly screwed out of the retaining clamp 360 , the clamp connection is released and the headrest supporting element 204 can be shifted in the longitudinal direction with respect to the retaining clamp 360 and thus with respect to the crossbar element 210 .
  • a continuously variable height adjustment of the headrest 201 is achieved.
  • One aspect of the invention is to further improve the known height adjustable headrest device, in particular with respect to function and operating safety.
  • the invention provides a height adjustable headrest device with a crossbar element and a headrest supporting element as well as a clamp connection for the continuously variable mounting of the headrest supporting element at the crossbar element, wherein the clamp connection comprises a retaining clamp comprising two recesses as well as a tapped bore, the retaining clamp gripping around the crossbar element, a centering bushing comprising an external thread and an internal thread, the centering bushing being screwed into the tapped bore of the retaining clamp, and a screw element screwed into the centering bushing, wherein the headrest supporting element is inserted in the recesses of the retaining clamp, the crossbar element comprises a bore into which the centering bushing is inserted, and the clamp connection is effected by screwing in the screw element into the centering bushing and thus bringing the headrest supporting element near the crossbar element.
  • the clamp connection comprises a retaining clamp comprising two recesses as well as a tapped bore, the retaining clamp gripping around the crossbar element, a centering
  • the height adjustable headrest device thus differs from the known height adjustable headrest device illustrated above in the design of the clamp connection, that is in that a centering bushing is provided which comprises an external thread and an internal thread.
  • the centering bushing is screwed into the tapped bore of the retaining clamp with its external thread. With a cylindrical centering section, the centering bushing is inserted in a correspondingly designed bore of the crossbar element.
  • the screw element is screwed with the clamp connection by means of the internal thread of the centering bushing.
  • the sense of rotation of the internal thread of the centering bushing is opposed to that of the external thread of the centering bushing. If, for example, the internal thread is designed as left-handed thread, the external thread is designed as right-handed thread. This prevents the threaded bushing from being screwed out of the retaining clamp when the screw element is unintentionally actuated.
  • a spacer is arranged between the headrest supporting element and the crossbar element and held via a groove and tongue connection in the retaining clamp in a preferred embodiment.
  • the spacer is preferably made of plastics to ensure clamping as wear-resistant and backlash-free as possible.
  • the crossbar element preferably has a tubular design.
  • a bulging which is concave to the inside is provided which acts as abutment for the screw element.
  • the headrest supporting element and the corresponding recesses of the retaining clamp preferably have a rectangular design. It is to be understood that other shapes, for example circular or other rounded geometries, are also possible.
  • a wheel chair according to the invention with a height adjustable headrest device according to the present invention is preferably designed such that the crossbar element is designed as a push handle.
  • FIG. 1 is a perspective representation of a height adjustable headrest device according to the invention
  • FIG. 2 is a schematic representation of the clamp connection wherein the crossbar element is omitted for better representation
  • FIG. 3 is an exploded drawing of a spacer, the centering bushing, the retaining clamp and the screw element,
  • FIG. 4 is a perspective representation of the centering bushing
  • FIG. 5 is a sectional representation of the centering bushing
  • FIG. 6 is an axial plan view of the fixing bushing
  • FIG. 7 is a perspective representation of a known height adjustable headrest device corresponding to FIG. 1 .
  • FIG. 8 is a partially sectional representation of a known embodiment of a clamp connection
  • FIG. 9 is an enlarged perspective representation of a known retaining clamp
  • FIG. 10 is a partially sectional side view of a known embodiment of a clamp connection.
  • FIG. 11 is a perspective sectional representation of a crossbar element.
  • FIGS. 7 to 11 have been illustrated in the beginning. As far as not described otherwise in the following, the embodiments in this regard also apply to the height adjustable headrest device according to the invention.
  • FIGS. 1 to 6 those components which correspond to the respective known components according to FIGS. 7 to 11 are provided with reference numerals which are lower by the amount of 200 with respect to the respective corresponding reference numerals in FIGS. 7 to 11 .
  • reference numeral 1 is assigned to the headrest in the embodiment of the invention according to FIG. 1
  • reference numeral 201 is used for the headrest of the known embodiment according to FIG. 7 .
  • the crossbar element 10 according to the present invention basically corresponds to that according to the prior art described in the beginning. Only the bore 11 has a different design in the crossbar element according to the invention, as will be illustrated below. In FIG. 11 , for the sake of simplicity, therefore both reference numerals 210 are used for the crossbar element according to the prior art, and reference numeral 10 for the crossbar element according to the invention. The same goes for the reference numerals 211 and 11 for the bore as well as reference numerals 212 and 12 for the bulging.
  • the clamp connection of the height adjustable headrest device comprises a centering bushing 20 .
  • the centering bushing 20 comprises an external thread 22 , with which it can be screwed into the tapped bore 180 of the retaining clamp 160 .
  • a collar 25 provided at the centering bushing 20 serves as contact face.
  • the centering bushing 20 moreover has a centering section 21 inserted in the bore 11 of the crossbar element 10 .
  • the bore 11 has to be designed such that it is adapted to the outside diameter of the centering section 21 of the centering bushing 20 as sliding fit.
  • the bore 211 is in contrast dimensioned such that the threaded portion of the screw element 390 can be passed through.
  • the centering bushing 20 moreover has an internal thread 23 the sense of rotation of which is opposed to that of the external thread 22 . If the external thread 22 is designed as right-handed thread, the internal thread 23 is designed as left-handed thread. Correspondingly, the internal thread 23 is designed as left-handed thread if the external thread 22 is designed as right-handed thread.
  • the same can be put over the crossbar element 10 such that the centering section 21 of the centering bushing 20 penetrates the bore 11 of the crossbar element 10 .
  • the spacer 170 can then be inserted into the retaining clamp 160 , and subsequently the headrest supporting element 4 is passed through the recesses 161 a , 161 b.
  • the screw element 190 is screwed into the centering bushing 20 by means of the star handle 191 until it lies against the bulging 12 of the crossbar element 10 . If the screw element 190 is further screwed in, the headrest supporting element 4 is clamped with the crossbar element 10 via the spacer 170 .

Landscapes

  • 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)
US11/809,634 2006-06-01 2007-05-31 Height adjustable headrest device Abandoned US20080018159A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEDE102006026055.4 2006-06-01
DE102006026055A DE102006026055B3 (de) 2006-06-01 2006-06-01 Höhenverstellbare Kopfstützvorrichtung

Publications (1)

Publication Number Publication Date
US20080018159A1 true US20080018159A1 (en) 2008-01-24

Family

ID=38421587

Family Applications (1)

Application Number Title Priority Date Filing Date
US11/809,634 Abandoned US20080018159A1 (en) 2006-06-01 2007-05-31 Height adjustable headrest device

Country Status (7)

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

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10219966B2 (en) * 2016-12-09 2019-03-05 Kavo Dental Technologies, Llc Headrest adjustment system
US10289162B2 (en) * 2015-02-13 2019-05-14 Au Optronics Corporation Display device
USD972981S1 (en) * 2020-06-15 2022-12-20 Rolapal Limited Headrest support for a wheelchair

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102679110A (zh) * 2012-05-18 2012-09-19 江苏格雷特机器人有限公司 一种架杆
CN104433387A (zh) * 2014-11-19 2015-03-25 成都实景信息技术有限公司 一种方便员工办公的设备
RU181242U1 (ru) * 2017-08-21 2018-07-06 Алексей Валентинович Макаровский Универсальный подголовник

Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US4618299A (en) * 1984-03-07 1986-10-21 Mcgard, Inc. Locknut and key therefor
US4647883A (en) * 1983-08-27 1987-03-03 Oxley Robert Frederick Tuning screw having a resilient plastics bush which supports the tuning plunger within a metal bush
US4822223A (en) * 1987-09-23 1989-04-18 Williams William L Wood insert
US5176554A (en) * 1990-12-03 1993-01-05 Simmons Thomas R Aquatic flotation device
US5492388A (en) * 1992-12-28 1996-02-20 Nissan Motor Co., Ltd. Structure for steering member
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
US5967613A (en) * 1997-08-11 1999-10-19 Piccard Corporation Wheelchair support and attachment system
US6039740A (en) * 1995-02-07 2000-03-21 Olerud; Sven Method and a device for implant locking
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
US20060170183A1 (en) * 2005-01-14 2006-08-03 Aquatec Gmbh Footrest for wheelchairs or the like
US7207630B1 (en) * 2004-03-26 2007-04-24 Robert Reynolds Removable adjustable headrest for wheelchairs having a neck roll

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4584643B2 (ja) * 2004-07-16 2010-11-24 株式会社ユーキ・トレーディング 車椅子用の後付けヘッドレスト支持機構

Patent Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US4647883A (en) * 1983-08-27 1987-03-03 Oxley Robert Frederick Tuning screw having a resilient plastics bush which supports the tuning plunger within a metal bush
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
US5176554A (en) * 1990-12-03 1993-01-05 Simmons Thomas R Aquatic flotation device
US5492388A (en) * 1992-12-28 1996-02-20 Nissan Motor Co., Ltd. Structure for steering member
US6039740A (en) * 1995-02-07 2000-03-21 Olerud; Sven Method and a device for implant locking
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
US20060170183A1 (en) * 2005-01-14 2006-08-03 Aquatec Gmbh Footrest for wheelchairs or the like
US7331632B2 (en) * 2005-01-14 2008-02-19 Aquatec Gmbh Footrest for wheelchairs or the like

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10289162B2 (en) * 2015-02-13 2019-05-14 Au Optronics Corporation Display device
US10219966B2 (en) * 2016-12-09 2019-03-05 Kavo Dental Technologies, Llc Headrest adjustment system
USD972981S1 (en) * 2020-06-15 2022-12-20 Rolapal Limited Headrest support for a wheelchair

Also Published As

Publication number Publication date
CA2589024A1 (en) 2007-12-01
ATE412353T1 (de) 2008-11-15
DE102006026055B3 (de) 2007-11-22
DK1862094T3 (da) 2009-03-02
EP1862094A1 (de) 2007-12-05
CA2589024C (en) 2009-10-27
EP1862094B1 (de) 2008-10-29
DE502007000201D1 (de) 2008-12-11
PT1862094E (pt) 2009-02-09

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Legal Events

Date Code Title Description
AS Assignment

Owner name: AQUATEC GMBH, GERMAN DEMOCRATIC REPUBLIC

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:GRUNOW, ALEXANDER;HRUZA, DAVID;REEL/FRAME:020110/0565;SIGNING DATES FROM 20071002 TO 20071029

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION