EP0303145B1 - Motorisch verstellbare Kopfstütze für einen zahnärztlichen Behandlungsstuhl - Google Patents

Motorisch verstellbare Kopfstütze für einen zahnärztlichen Behandlungsstuhl Download PDF

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Publication number
EP0303145B1
EP0303145B1 EP88112484A EP88112484A EP0303145B1 EP 0303145 B1 EP0303145 B1 EP 0303145B1 EP 88112484 A EP88112484 A EP 88112484A EP 88112484 A EP88112484 A EP 88112484A EP 0303145 B1 EP0303145 B1 EP 0303145B1
Authority
EP
European Patent Office
Prior art keywords
headrest
treatment chair
chair according
hinge
backrest
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.)
Expired - Lifetime
Application number
EP88112484A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0303145A1 (de
Inventor
Klaus Stöckl
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP0303145A1 publication Critical patent/EP0303145A1/de
Application granted granted Critical
Publication of EP0303145B1 publication Critical patent/EP0303145B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • A61G15/00—Operating chairs; Dental chairs; Accessories specially adapted therefor, e.g. work stands
    • A61G15/10—Parts, details or accessories
    • A61G15/12—Rests specially adapted therefor, e.g. for the head or feet
    • A61G15/125—Head-rests

Definitions

  • the invention relates to a dental treatment chair with an adjustable headrest according to the preamble of claim 1.
  • a treatment chair is known from DE-A-3 347 255.
  • a support member carrying the headrest is designed as a circularly curved narrow plate with a center of circle which is approximately in the cervical vertebral joint of a Patient sitting in chair.
  • the curved plate is guided in a slide that can be adjusted along the backrest and can be moved in and out of the slide or out of the backrest by means of a hydraulic cylinder drive.
  • the circular arc guide of the carrier plate and the longitudinal guide of the slide are comparatively complex on the one hand; on the other hand, they require a relatively thick backrest construction in order to be able to accommodate the parts, in particular the curved plate, in the interior of the backrest in the retracted state.
  • the headrest has an intermediate piece which is provided with a curved track which, viewed from the side of the headrest, has sections which are curved in opposite directions in the manner of a shaft.
  • the cam track is guided in a guide provided on the backrest, the intermediate piece for effecting an adjustment of the headrest being connected with its end facing away from the headrest to a pulling or pushing device arranged on the backrest.
  • the guidance of the curved path is formed by a horizontal rod arranged transversely to the longitudinal direction of the backrest, on which the intermediate piece with the curved path rests.
  • the horizontal bar is rotatably mounted.
  • the end of the intermediate piece facing away from the headrest is pivotable and longitudinally displaceable in a carriage carried by the backrest, which is adjusted by a further pulling or pushing device.
  • the invention specified in claim 1 is based on the object to provide an improvement, in particular with the aim of designing the kinematics of the headrest so that an optimal adaptation to the natural pitching movement of the head of a patient in the various treatment positions, especially for treatment of the upper and lower jaw on the seated and lying patient is given, which ultimately means that the headrest should be adjustable in as wide a range as possible following the natural pitching movement of the head.
  • the spatial dimensions for such a headrest adjustment device should be as small as possible.
  • An important advantage of the solution according to the invention is that, due to the parallelogram-like linkage, when the headrest is tilted, an opposing tilting movement occurs, as a result of which an optimal adaptation to the natural head movement of a patient and a very wide adjustment range for the headrest is achieved.
  • Fig. 1 shows a simplified representation of a dental treatment chair, in which in a known manner a base part 1 is held by an adjusting device 2, not shown in detail, a chair top 5 consisting of a seat 3 and a backrest 4 is adjustable in height.
  • a headrest 7 is supported on the backrest 4 by means of a carrier part 6 so as to be adjustable in the direction of its longitudinal extension.
  • the headrest 7 contains two shell-shaped housing parts, a lower part 8 and an upper part 9 receiving the headrest padding.
  • FIG. 2 shows the headrest 7 with the upper part 8 removed obliquely from the front, that is to say in a slightly perspective representation.
  • two guide rods 10 extending in the longitudinal direction of the headrest are rigidly fastened, on which ball bushings 11 are guided in an adjustable manner.
  • the ball bushings 11 are rigidly connected to one another by means of a traverse 12 arranged transversely to the longitudinal axis of the headrest.
  • a clamping piece 13 is fastened, with which the cross member 12 can be coupled with a toothed belt 14 and thus with the ball bushings 11.
  • the toothed belt 14 is part of an electric motor drive which contains a motor 15 installed transversely in the lower end of the headrest and a guide roller 16 arranged at the opposite end.
  • a driver 17 is rigidly fastened in the center to the crossbar 12 and extends through the headrest housing through a recess 18 which is likewise provided in the center of the headrest and forms an articulated connection 21 there with a linkage arm 20 (FIG. 3).
  • the link arm 20 is plate-shaped; the end opposite the joint 21 forms a further joint 22 with the headrest support part 6.
  • the two link arms 20, 23 form a linkage similar to the linkage 22, 24 and 21, 30; in contrast to a real parallelogram linkage, in which the joint distances are the same, the joint distance here is different.
  • the joint distance b of the upper joint connections 21, 30 is approximately twice as large as the distance a of the lower joint connection 22, 24.
  • the resulting "distorted" parallelogram makes it possible for the headrest to be pivoted backwards (see dash-dotted line) 5) executes a counter-pivoting in the area of the headrest. The headrest therefore does not perform a pure parallelogram or swivel movement, but a mixed movement of the two.
  • the two ball bushings are moved along the guide rods 10 in the case of a drive via the toothed belt 14 via the crossbar.
  • This also adjusts the parallelogram arms 20, 23, the two rollers 27 being supported on the inclined guideway 28 and thus adjusting the headrest in the manner described.
  • the slope and shape of the curved path 28 determine the relationship between the pivoting movement and the longitudinal displacement and thereby the desired curve 32, shown in broken lines in FIG. 5.
  • This curve corresponds to an arc, the center of which is in the area of the cervical spine of a patient in the chair.
  • a head support point P assumed on the headrest accordingly does not perform a pivoting movement about the articulation points 22/24 in accordance with the circular arc 31 shown in dashed lines, but rather a movement in accordance with the curve 32 shown in dashed lines.
  • a spindle drive can be provided and the two link arms can also be designed in the otherwise usual rod construction instead of the plate-shaped configuration described.
  • a drive in the backrest area e.g. inside the backrest, conceivable and the adjustment, as described, via a cable or a toothed belt.
  • the cover 33 advantageously also extends over the switches 35 (see Fig.

Landscapes

  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Accommodation For Nursing Or Treatment Tables (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)
EP88112484A 1987-08-14 1988-08-01 Motorisch verstellbare Kopfstütze für einen zahnärztlichen Behandlungsstuhl Expired - Lifetime EP0303145B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3727204 1987-08-14
DE3727204 1987-08-14

Publications (2)

Publication Number Publication Date
EP0303145A1 EP0303145A1 (de) 1989-02-15
EP0303145B1 true EP0303145B1 (de) 1991-08-14

Family

ID=6333814

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88112484A Expired - Lifetime EP0303145B1 (de) 1987-08-14 1988-08-01 Motorisch verstellbare Kopfstütze für einen zahnärztlichen Behandlungsstuhl

Country Status (4)

Country Link
US (1) US4840429A (ko)
EP (1) EP0303145B1 (ko)
JP (1) JPH0515301Y2 (ko)
DE (2) DE8717434U1 (ko)

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Publication number Priority date Publication date Assignee Title
EP0517933B1 (de) * 1991-06-10 1995-03-22 Siemens Aktiengesellschaft Zahnärztlicher Patientenstuhl mit verstellbarer Kopfstütze
DE4410277C2 (de) * 1994-03-24 1997-09-11 Kaltenbach & Voigt Ärztlicher oder zahnärztlicher Behandlungsstuhl
US5860177A (en) * 1997-04-22 1999-01-19 Jung; Brian H. Adjustable travel pillow
EP0925994A1 (en) * 1997-12-24 1999-06-30 Gestind M.B. Manifattura Di Bruzolo S.P.A A headrest for motor verhicle seats
EP0976608A1 (en) * 1998-07-09 2000-02-02 Gestind M.B. Manifattura Di Bruzolo S.P.A A headrest for motor-vehicle seats
IT1306990B1 (it) * 1999-01-15 2001-10-11 Bruzolo Manifatt Gestind Mb Appoggiatesta per un sedile di un veicolo, in particolare unautoveicolo.
DE19944719C1 (de) * 1999-09-17 2001-01-11 Lear Corp Gmbh & Co Kg Fahrzeugsitz
DE10014063A1 (de) * 2000-03-22 2001-09-27 Kaltenbach & Voigt Medizinischer oder dentalmedizinischer Behandlungsstuhl oder eine Kopfstütze für einen solchen Behandlungsstuhl
US6893096B2 (en) * 2002-09-05 2005-05-17 A-Dec, Inc. Headrest support and adjustment mechanism
DE10253863B4 (de) * 2002-11-19 2008-07-10 Maquet Gmbh & Co. Kg Motorisch verstellbare Kopfstütze
TW582241U (en) * 2002-12-23 2004-04-01 R-Shuen Liau Improved structure for adjusting height and position of backrest of chair
ATE333859T1 (de) * 2003-07-18 2006-08-15 Erich Kratzmaier Behandlungsliege
FI119221B (fi) 2005-04-11 2008-09-15 Planmeca Oy Menetelmä ja laitteisto hoitotuolin rakenne-elementtien keskinäisen asennon säätämiseksi
US7636968B2 (en) * 2005-06-14 2009-12-29 Earthlite Massage Tables, Inc. Flexible headrest assembly with non-skid contact for a massage device
US20070001076A1 (en) * 2005-06-29 2007-01-04 Saeb Asamarai Support arm and method with variable counterbalance
EP1772130B1 (de) * 2005-10-10 2010-04-21 Degonda-Rehab S.A. Verstellbare Kopfstützeneinheit
EP2395962B1 (en) * 2009-02-11 2013-07-24 Dental Equipment, Llc, Dba Pelton&Crane Biarticulated headrest for chair
IT1400287B1 (it) * 2010-05-25 2013-05-24 Vassilli Srl Appoggiatesta dinamico.
CN102228345B (zh) * 2011-03-25 2013-06-19 谢光 一种便于健颈的多功能健身椅
US10238215B2 (en) 2012-09-20 2019-03-26 Steelcase Inc. Seating arrangement with headrest assembly
US9061616B2 (en) * 2013-01-24 2015-06-23 Ford Global Technologies, Llc Articulating headrest assembly
US9409504B2 (en) 2013-01-24 2016-08-09 Ford Global Technologies, Llc Flexible seatback system
US9399418B2 (en) 2013-01-24 2016-07-26 Ford Global Technologies, Llc Independent cushion extension and thigh support
US9415713B2 (en) 2013-01-24 2016-08-16 Ford Global Technologies, Llc Flexible seatback system
US9315131B2 (en) 2014-01-23 2016-04-19 Ford Global Technologies, Llc Suspension seat back and cushion system having an inner suspension panel
US9421894B2 (en) 2014-04-02 2016-08-23 Ford Global Technologies, Llc Vehicle seating assembly with manual independent thigh supports
EP3154438B1 (en) 2014-06-13 2022-07-27 University of Utah Research Foundation Therapeutic ultrasound breast treatment
US9789790B2 (en) 2014-10-03 2017-10-17 Ford Global Technologies, Llc Tuned flexible support member and flexible suspension features for comfort carriers
EP3229647A1 (en) 2014-12-11 2017-10-18 Integrated Furniture Technologies Limited Adjustable furniture
US10046682B2 (en) 2015-08-03 2018-08-14 Ford Global Technologies, Llc Back cushion module for a vehicle seating assembly
US9849817B2 (en) 2016-03-16 2017-12-26 Ford Global Technologies, Llc Composite seat structure
US10286818B2 (en) 2016-03-16 2019-05-14 Ford Global Technologies, Llc Dual suspension seating assembly
US9994135B2 (en) 2016-03-30 2018-06-12 Ford Global Technologies, Llc Independent cushion thigh support
US10220737B2 (en) 2016-04-01 2019-03-05 Ford Global Technologies, Llc Kinematic back panel
US9889773B2 (en) 2016-04-04 2018-02-13 Ford Global Technologies, Llc Anthropomorphic upper seatback
US9802512B1 (en) 2016-04-12 2017-10-31 Ford Global Technologies, Llc Torsion spring bushing
US9845029B1 (en) 2016-06-06 2017-12-19 Ford Global Technologies, Llc Passive conformal seat with hybrid air/liquid cells
US9834166B1 (en) 2016-06-07 2017-12-05 Ford Global Technologies, Llc Side airbag energy management system
US9849856B1 (en) 2016-06-07 2017-12-26 Ford Global Technologies, Llc Side airbag energy management system
US10377279B2 (en) 2016-06-09 2019-08-13 Ford Global Technologies, Llc Integrated decking arm support feature
US10166895B2 (en) 2016-06-09 2019-01-01 Ford Global Technologies, Llc Seatback comfort carrier
WO2018018067A1 (en) * 2016-07-26 2018-02-01 Futuris Automotive Interiors (Australia) Pty Ltd Adjustable head restraint
US10286824B2 (en) 2016-08-24 2019-05-14 Ford Global Technologies, Llc Spreader plate load distribution
US10279714B2 (en) 2016-08-26 2019-05-07 Ford Global Technologies, Llc Seating assembly with climate control features
US10391910B2 (en) 2016-09-02 2019-08-27 Ford Global Technologies, Llc Modular assembly cross-tube attachment tab designs and functions
US10239431B2 (en) 2016-09-02 2019-03-26 Ford Global Technologies, Llc Cross-tube attachment hook features for modular assembly and support
US9914378B1 (en) 2016-12-16 2018-03-13 Ford Global Technologies, Llc Decorative and functional upper seatback closeout assembly
DE102017001149A1 (de) 2017-02-08 2018-08-09 Grammer Aktiengesellschaft Kopfstütze
US10596936B2 (en) 2017-05-04 2020-03-24 Ford Global Technologies, Llc Self-retaining elastic strap for vent blower attachment to a back carrier
DE102018109611B4 (de) * 2018-04-10 2022-04-21 Grammer Aktiengesellschaft Kopfstütze
DE102022110005A1 (de) 2022-04-26 2023-10-26 Faurecia Autositze Gmbh Verstelleinrichtung und Fahrzeugsitz
DE102022120969A1 (de) 2022-08-19 2024-02-22 Faurecia Autositze Gmbh Verstellvorrichtung für eine Kopfstütze eines Fahrzeugsitzes und Fahrzeugsitz

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US3817576A (en) * 1972-10-02 1974-06-18 Pennwalt Corp Dental chair with adjustable headrest
CA1045276A (en) * 1973-09-06 1978-12-26 Elaine C. Siwiec Powder coating composition comprising a copolymer of a glycidyl ester and a crosslinking agent
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Also Published As

Publication number Publication date
JPS6431732U (ko) 1989-02-27
US4840429A (en) 1989-06-20
DE3864215D1 (de) 1991-09-19
DE8717434U1 (de) 1988-10-27
JPH0515301Y2 (ko) 1993-04-22
EP0303145A1 (de) 1989-02-15

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