EP1066169B1 - Antrieb und verriegelungssystem zum positionieren von mobilen elementen eines bettes oder eines sitzes - Google Patents

Antrieb und verriegelungssystem zum positionieren von mobilen elementen eines bettes oder eines sitzes Download PDF

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Publication number
EP1066169B1
EP1066169B1 EP99911854A EP99911854A EP1066169B1 EP 1066169 B1 EP1066169 B1 EP 1066169B1 EP 99911854 A EP99911854 A EP 99911854A EP 99911854 A EP99911854 A EP 99911854A EP 1066169 B1 EP1066169 B1 EP 1066169B1
Authority
EP
European Patent Office
Prior art keywords
seat
bed
rod
motor
control device
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
EP99911854A
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English (en)
French (fr)
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EP1066169A2 (de
Inventor
Jean-François PIAULET
Laurent Groussin
Pascal Moulin
Hugues Legras
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P G A Electronic
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P G A Electronic
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.)
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Publication date
Application filed by P G A Electronic filed Critical P G A Electronic
Publication of EP1066169A2 publication Critical patent/EP1066169A2/de
Application granted granted Critical
Publication of EP1066169B1 publication Critical patent/EP1066169B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • A47C20/00—Head -, foot -, or like rests for beds, sofas or the like
    • A47C20/04—Head -, foot -, or like rests for beds, sofas or the like with adjustable inclination
    • A47C20/041—Head -, foot -, or like rests for beds, sofas or the like with adjustable inclination by electric motors
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A47C1/022—Reclining or easy chairs having independently-adjustable supporting parts
    • A47C1/024—Reclining or easy chairs having independently-adjustable supporting parts the parts, being the back-rest, or the back-rest and seat unit, having adjustable and lockable inclination
    • A47C1/0242—Reclining or easy chairs having independently-adjustable supporting parts the parts, being the back-rest, or the back-rest and seat unit, having adjustable and lockable inclination by electric motors
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A47C1/022—Reclining or easy chairs having independently-adjustable supporting parts
    • A47C1/024—Reclining or easy chairs having independently-adjustable supporting parts the parts, being the back-rest, or the back-rest and seat unit, having adjustable and lockable inclination
    • A47C1/025—Reclining or easy chairs having independently-adjustable supporting parts the parts, being the back-rest, or the back-rest and seat unit, having adjustable and lockable inclination by means of a rack-and-pinion or like gearing mechanism

Definitions

  • the invention relates to an actuation system. for changing the position of moving parts a seat or a bed.
  • the invention finds applications in all areas using a seat or a bed whose moving parts can be operated electrically, according to the needs or comfort of the user.
  • the invention applies to seats intended for the carriage of passengers such as seats airplane, seats for the disabled, seats dentists, medical seats or beds, stretchers electric, etc.
  • seats at reclining backrests or reclining beds are used either for the comfort of users, such as airplane seats, either for practical reasons, like dentists' seats or seats for the disabled.
  • coefficients of friction which determine the yield and the irreversibility of this type of actuators fluctuate based on multiple parameters relating to the constituent materials the actuator; they fluctuate, in particular, in depending on the temperature and the nature of the lubrication of these materials.
  • document DE-A-3 136 653 describes an undercurrent blocking system preventing, by emergency, involuntary sliding and large amplitude of a vehicle seat. Such a system does not allow systematic blocking of the seat in position. In other words, it does not block infinite resolution.
  • the object of the invention is precisely to remedy to the disadvantages of the actuators described above. To this end, it offers an electric actuator, irreversibility (blocking of kinematics) is independent of the yield and obtained by a blocker lack of current mounted in parallel on a motor and supplied with energy by the same control device than the engine.
  • the blocker lacking current is a brake that locks the rod when is not electrically powered and which authorizes a movement of the rod when powered.
  • the transmission system is a straight gear reducer.
  • the motor is a rotary motor driving the rod in a rotational movement.
  • Figure 1 shows an example of a seat reclining backrest with modification system and of conservation of the inclination of the back, in accordance with the invention.
  • the invention will be described in its application to a seat with reclining back. He is at note, however, that the system of the invention can be used for a bed or a seat with one or more several mobile elements (headboard, railing, elevation system, backrest, headrest, leg rests, lumbar supports, etc.) may change of position.
  • mobile elements headboard, railing, elevation system, backrest, headrest, leg rests, lumbar supports, etc.
  • the position modification system of the folder shown in Figure 1, includes means for 3 mechanical displacement of file 1 and means actuation and locking 4 intended for activate and / or block these displacement means 3.
  • these means of actuation and lock, or actuator respond to a command the user to lower or straighten the backrest 1 of the seat relative to the seat 2 of this seat.
  • FIG. 2 shows, more detailed, an example of an actuator of the invention.
  • This actuator comprises an electric motor 5 on which is fixed a transmission rod 6 and of which the role is to cause the movement of this rod 6.
  • This transmission can be, for example, a rotation.
  • the motor 5 is supplied with energy by a control device 9.
  • This control device 9 receives a source voltage V s transmitted to the system by the diode CR1.
  • the actuator further comprises a blocker lack of current 7, supplied with voltage by the control device 9.
  • the role of this blocker is to allow the movement of the rod 6 when it is powered by the control device 9 and, at on the contrary, to prohibit the movement of the rod 6 when it is no longer powered.
  • This blocker with lack of current 7 perhaps, for example, an undercurrent brake or a electro magnet.
  • the motor 5 and the blocker 7 are connected in parallel and are powered by the same control device 9.
  • control device 9 allows simultaneously supply the motor 5 and the blocker 7 by a voltage of the same value (which perhaps, by example, 24 volts) to generate the movement.
  • the device allows cutting simultaneous supply of motor 5 and the supply of the blocker 7 to block the movement.
  • Such an actuator has an irreversibility almost total, which means that the irreversibility of the actuator is greater than its dynamic capacity.
  • the control device 9 is controlled by the voltage V s . It behaves so as to keep the motor voltage constant and at the same value as the voltage V s (when the motor becomes generator following a driving load or when the motor stops).
  • the control device 9 acts as soon as the voltage of the actuator V a is greater than the source voltage V s .
  • the transistor Q1 (which is, for example, a bipolar transistor) becomes “on” so as to drain the energy coming from the motor become generator; the transistor Q1 naturally becomes “blocked” again when the source voltage V s again becomes greater than the voltage of the actuator V a , therefore when the motor is no longer generator.
  • the engine stopping phase may be a special case of the driving load; indeed, the source voltage V s goes to around 0 Volt, which makes the transistor Q1 passing from the moment and as long as V a is greater than V s +0.6 Volt, in the case of the assembly of FIG. 2 .
  • the rod 6 is connected at its end to a transmission system 8 which provides training means of movement mechanical 3 of file 1.
  • this transmission system 8 is a gear reducer rights which has the advantage of offering a maximum return and therefore a decrease in consumption system, volume and weight of the system actuation compared to worm gear systems of the prior art.
  • the invention has the advantage of allowing a sharp decrease in the vacuum supply current and its fluctuations compared to the screw system endless of the prior art, due to the deletion significant friction in the gears, varying depending on the temperature and the risks of seizure after a prolonged stop.
  • the relationship between the energy consumed and the torque delivered is optimized and non-fluctuating in the system of the invention.
  • the value of the current is a faithful image of the mechanical energy transmitted.
  • the system includes a mechanical device 10, such as a lever, which allows to reverse or comfort mechanically the two states of the blocker for bearing at a possible defect in the control device 9 or for ensuring that security positions are obtained, by example, in the case of passenger seats on an airplane, subject to the regulations of the Federal Office of FAA aeronautics and the office of member countries of the JAA (joint aviation authorities) which require that they are in the right position during takeoff and landing the plane.
  • a mechanical device 10 such as a lever

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • Nursing (AREA)
  • Seats For Vehicles (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Invalid Beds And Related Equipment (AREA)
  • Transmission Devices (AREA)
  • Chairs Characterized By Structure (AREA)

Claims (4)

  1. System zum Modifizieren der Position beweglicher Elemente eines Betts oder eines Sessels mit:
    Mitteln (3) zur mechanischen Verschiebung eines ersten beweglichen Elements in bezug auf ein zweites, feststehendes oder bewegliches Element des Betts oder des Sessels,
    Betätigungsmittel (4), die am Sessel oder am Bett befestigt sind, um die Verschiebemittel des ersten Elements zu aktivieren oder zu blockieren,
       dadurch gekennzeichnet, daß die Betätigungsmittel die Irreversibilität des Systems sicherstellen und umfassen:
    einen Elektromotor (5), der von einer Steuervorrichtung (9) gespeist wird,
    eine von dem Motor angetriebene Stange (6),
    einen Strommangel-Blockierer (7), der eine über dessen dynamischer Kapazität liegende Irreversibilität des Systems durch Blockieren der Stange gewährleistet, parallel mit dem Elektromotor geschaltet ist und mit der Steuervorrichtung (9) verbunden ist, und
    ein Übertragungssystem (8), das die Verschiebemittel des ersten Elements mit einer bestimmten Geschwindigkeit antreibt.
  2. System nach Anspruch 1, dadurch gekennzeichnet, daß der Strommangel-Blockierer eine Bremse ist, welche, wenn sie nicht mit Strom versorgt wird, die Stange (6) blockiert und, wenn sie mit Strom versorgt wird, eine Bewegung der Stange gestattet.
  3. System nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß das Übertragungssystem (8) ein Untersetzungsgetriebe mit Stirnrädern ist.
  4. System nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass der Motor ein Rotationsmotor ist, der die Stange (6) in einer Drehbewegung antreibt.
EP99911854A 1998-04-02 1999-04-01 Antrieb und verriegelungssystem zum positionieren von mobilen elementen eines bettes oder eines sitzes Expired - Lifetime EP1066169B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9804111 1998-04-02
FR9804111A FR2776903B1 (fr) 1998-04-02 1998-04-02 Systeme d'actionnement et de verrouillage pour le positionnement des elements mobiles d'un lit ou d'un siege
PCT/FR1999/000759 WO1999051126A2 (fr) 1998-04-02 1999-04-01 Systeme d'actionnement et de verrouillage pour le positionnement des elements mobiles d'un lit ou d'un siege

Publications (2)

Publication Number Publication Date
EP1066169A2 EP1066169A2 (de) 2001-01-10
EP1066169B1 true EP1066169B1 (de) 2003-07-02

Family

ID=9524785

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99911854A Expired - Lifetime EP1066169B1 (de) 1998-04-02 1999-04-01 Antrieb und verriegelungssystem zum positionieren von mobilen elementen eines bettes oder eines sitzes

Country Status (10)

Country Link
US (1) US6623077B1 (de)
EP (1) EP1066169B1 (de)
JP (1) JP2002510513A (de)
BR (1) BR9909305A (de)
CA (1) CA2327390C (de)
DE (1) DE69909270T2 (de)
ES (1) ES2203094T3 (de)
FR (1) FR2776903B1 (de)
TW (1) TW401362B (de)
WO (1) WO1999051126A2 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2972873A1 (fr) * 2011-03-17 2012-09-21 Pga Electronic Systeme d'actionnement pour le positionnement d'element mobile a vitesse variable

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1432343A (zh) * 2002-01-17 2003-07-30 英属维京群岛商冠亚生技控股集团股份有限公司 脊椎固定用旋控式固定装置
US20050088023A1 (en) * 2003-10-22 2005-04-28 Tomas Hinojos In-line seat recliner assembly
DE10356614B4 (de) * 2003-12-01 2009-04-02 Johnson Controls Gmbh Motorisierter Sitz zum Drehen der Lehne und Verfahren
DE102004025507A1 (de) * 2004-05-21 2005-12-15 Johnson Controls Gmbh Automotive Systems Group Fahrzeugsitz
DE202004008714U1 (de) * 2004-05-28 2004-07-29 Dewert Antriebs- Und Systemtechnik Gmbh & Co Kg Bremsvorrichtung für einen elektrischen Antriebsmotor und Möbel
DE102005001877A1 (de) * 2005-01-14 2006-07-27 Deon Ag Möbel, insbesondere Sitzmöbel
DE102005001875B4 (de) * 2005-01-14 2007-05-16 Deon Ag Sessel
DE102005057623B3 (de) * 2005-12-02 2007-05-10 Keiper Gmbh & Co.Kg Fahrzeugsitz, insbesondere Kraftfahrzeugsitz
JP4985744B2 (ja) * 2009-10-28 2012-07-25 株式会社今仙電機製作所 シート装置
US20120060290A1 (en) * 2010-09-09 2012-03-15 Midmark Corporation Brushless dc motor braking for a barrier free medical table
DE102012212140B4 (de) * 2012-04-20 2020-03-19 Johnson Controls Gmbh Bremsvorrichtung für eine direkt elektromechanisch aktuierte Planetengetriebeanordnung eines Sitzverstellmechanismus und Verfahren zum Betrieb einer Bremsvorrichtung
FR3001782B1 (fr) * 2013-02-07 2016-08-12 Precilec Actionneur et siege de cabine comprenant un tel actionneur
US10117797B2 (en) * 2015-03-10 2018-11-06 Pride Mobility Products Corporation Lift chair control device
US10292500B2 (en) 2016-04-21 2019-05-21 L&P Property Management Company Quick-exit assembly for reclining furniture
JP6780454B2 (ja) * 2016-11-09 2020-11-04 トヨタ紡織株式会社 乗物シート用バックフレーム
TWI803397B (zh) * 2022-07-21 2023-05-21 施權航 電動床

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DE3132235A1 (de) * 1981-08-14 1983-11-10 Brose Fahrzeugteile GmbH & Co KG, 8630 Coburg Sitzverstellung, insbesondere fuer einen kraftfahrzeugsitz
DE3136653A1 (de) * 1981-09-16 1983-03-03 Daimler-Benz Ag, 7000 Stuttgart "kraftwagensitz, der mittels paarweise angeordneter lauf- und fuehrungsschienen laengsverschiebbar ausgebildet ist"
US4759587A (en) 1987-08-27 1988-07-26 P. L. Porter Company Manual override for power recliner seat screw jack
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Publication number Priority date Publication date Assignee Title
FR2972873A1 (fr) * 2011-03-17 2012-09-21 Pga Electronic Systeme d'actionnement pour le positionnement d'element mobile a vitesse variable

Also Published As

Publication number Publication date
ES2203094T3 (es) 2004-04-01
US6623077B1 (en) 2003-09-23
TW401362B (en) 2000-08-11
DE69909270T2 (de) 2004-05-27
CA2327390A1 (en) 1999-10-14
WO1999051126A2 (fr) 1999-10-14
CA2327390C (en) 2007-06-19
FR2776903A1 (fr) 1999-10-08
WO1999051126A3 (fr) 1999-12-09
BR9909305A (pt) 2000-11-21
FR2776903B1 (fr) 2000-06-16
EP1066169A2 (de) 2001-01-10
DE69909270D1 (de) 2003-08-07
JP2002510513A (ja) 2002-04-09

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