WO2008089754A1 - Vehicle seat - Google Patents

Vehicle seat Download PDF

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Publication number
WO2008089754A1
WO2008089754A1 PCT/DE2008/000169 DE2008000169W WO2008089754A1 WO 2008089754 A1 WO2008089754 A1 WO 2008089754A1 DE 2008000169 W DE2008000169 W DE 2008000169W WO 2008089754 A1 WO2008089754 A1 WO 2008089754A1
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WO
WIPO (PCT)
Prior art keywords
spindle
vehicle seat
drives
motors
motor
Prior art date
Application number
PCT/DE2008/000169
Other languages
German (de)
French (fr)
Inventor
Thomas Bethge
Original Assignee
Faurecia Autositze Gmbh
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 Faurecia Autositze Gmbh filed Critical Faurecia Autositze Gmbh
Publication of WO2008089754A1 publication Critical patent/WO2008089754A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
    • B60N2/0224—Non-manual adjustments, e.g. with electrical operation
    • B60N2/02246—Electric motors therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
    • B60N2/0224—Non-manual adjustments, e.g. with electrical operation
    • B60N2/0244—Non-manual adjustments, e.g. with electrical operation with logic circuits
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
    • B60N2/22—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the back-rest being adjustable
    • B60N2/2213—Gear wheel driven mechanism

Definitions

  • the invention relates to a vehicle seat with a motor-adjustable backrest according to the preamble of claim 1.
  • an actuator for the tilt adjustment of the backrest of a motor vehicle seat, which acts via a transmission shaft to a the actuator opposite lying below the backrest wobble gear.
  • the actuator acts via a transmission flange on a first wobble mechanism, which acts on a transverse to the seat below this transmission shaft extending to a second wobble mechanism.
  • the transmission shaft extends from the first wobble gear to the second wobble gear, so that the two wobble gear are synchronized with each other via the transmission shaft and cover substantially the same, dependent on the number of revolutions of the electric motor pivoting paths.
  • the transmission shaft extending from the first wobble gear to the second wobble gear extends above the seat surface and thereby restricts the installation space required for spring deflection of the lower backrest region.
  • a vehicle seat with a seat part and a relative to this adjustable backrest is also known, which is accommodated in both sides of the seat part arranged bearings, each comprising a gear arrangement, which transmit the pivotal movement of a drive to the backrest.
  • Each of the received on the seat gear assembly is associated with an electric actuator, which are electrically synchronized with each other.
  • the drives are assigned a control unit, in which the revolutions of the two electric actuators compared with each other. The revolutions are detected with potentiometers or Hall elements.
  • the object of the present invention is to provide a vehicle seat of the type mentioned above with novel synchronized mutually arranged drives for a backrest tilt adjustment.
  • the invention proposes a tilt adjustment concept for the backrest, in which motors and transmissions are arranged directly in the structure of the backrest, optionally inside or outside.
  • motors and transmissions are arranged directly in the structure of the backrest, optionally inside or outside.
  • drives engine and transmission
  • the two drives are spindle motors and are used to synchronize both spindle motors whose revolutions detecting ripple counter.
  • DC motors of various types are suitable, in which the ripple counter technology is applicable.
  • a ripple counter IC evaluates the rotations of DC motors without the use of mechanics and sensors.
  • the integrated circuit (ripple counter (IC) analyzes typical data of the characteristic of the motor current and thus determines the position and speed of the motor.)
  • the commutation signals resulting from a DC motor are used as feedback information, so that a sensorless and thus cost-effective synchronization of the two drives is possible
  • the invention thus proposes a paired drive concept for the backrest inclination adjustment, which makes the components significantly smaller and lighter, which means that the gear units and the engines to be used can build significantly smaller.
  • the spindle motor drive can be designed with a rotating spindle or a transversally running spindle nut.
  • Motor and gear can be arranged at an angle to the spindle shaft.
  • the motor shaft may be arranged parallel to the spindle shaft.
  • the drawing shows a vehicle seat 2 with a seat part 4 and a backrest part 6, which is arranged for tilt adjustment pivotable about both sides of the seat part provided bearing 8, 10.
  • the bearings 8, 10 are each a gear 12, 14 and each gear a separate drive 16, 18 associated, which are arranged on a transmission flange 20, 22.
  • Both drives 16, 18 are synchronized with each other by detecting the revolutions of both drives and compared with each other in an electronic control device 24. It can also be detected by the sensors, the pivotal movement of the backrest part.
  • the drives 16, 18 are known per se spindle motors. To synchronize both spindle motors whose revolutions are detected - A -
  • Ripple counter technologies known per se are used, for example, by supplying the commutation signals of the DC spindle motors 16, 18 as feedback signals via signal lines 26, 28 to the control device 24, analyzing the signals in the ripple counter ICs (known per se) and analyzing the signals Determine the position and speed of the spindle motors.
  • the spindle motor drive 16, 18 is formed with a rotating spindle and transversely running spindle nut.
  • the spindle motor drive 16, 18 can also be formed with a stationary spindle and transversely running on the spindle designed as a spindle nut transmission.
  • the spindle motor 16, 18 may have a motor shaft arranged parallel to the spindle.

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  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Seats For Vehicles (AREA)

Abstract

The invention relates to a vehicle seat (2) comprising a seat part (4) and a backrest part (6), which is disposed in a pivoting manner about bearings (8, 10) provided on both sides of the seat part in order to adjust the inclination, wherein a gear mechanism (12, 14) is associated with each of the bearings, and a dedicated drive (16, 18) is associated with each gear mechanism, and both drives are synchronized with each other, in that the revolutions of both drives are detected and compared to each other in an electronic controller (24), characterized in that the drives (16, 18) are spindle motors, and ripple counter technologies detecting the revolutions of the spindle motors are utilized in order to synchronize both spindle motors.

Description

Fahrzeugsitz vehicle seat
Die Erfindung betrifft einen Fahrzeugsitz mit motorisch verstellbarer Rückenlehne gemäß Oberbegriff des Anspruchs 1.The invention relates to a vehicle seat with a motor-adjustable backrest according to the preamble of claim 1.
Aus der DE 101 46 144 A1 ist für die Neigungsverstellung der Rückenlehne eines Kraftfahrzeugsitzes ein Stellantrieb bekannt, der über eine Übertragungswelle auf ein dem Stellantrieb gegenüberliegendes unterhalb der Rückenlehne angeordnetes Taumelgetriebe einwirkt. Der Stellantrieb wirkt über ein Getriebeflansch auf eine erstes Taumelgetriebe ein, welches über eine quer zur Sitzfläche unterhalb dieser verlaufenden Übertragungswelle auf ein zweites Taumelgetriebe einwirkt. Die Übertragungswelle erstreckt sich vom ersten Taumelgetriebe zum zweiten Taumelgetriebe, so dass die beiden Taumelgetriebe über die Übertragungswelle miteinander synchronisiert sind und im Wesentliche gleiche, von der Umdrehungszahl des Elektromotors abhängige Schwenkwege zurücklegen. Die sich vom ersten Taumelgetriebe zum zweiten Taumelgetriebe erstreckende Übertragungswelle verläuft oberhalb der Sitzfläche und schränkt dadurch den zur Einfederung des unteren Lehnenbereichs erforderlichen Bauraum ein.From DE 101 46 144 A1, an actuator is known for the tilt adjustment of the backrest of a motor vehicle seat, which acts via a transmission shaft to a the actuator opposite lying below the backrest wobble gear. The actuator acts via a transmission flange on a first wobble mechanism, which acts on a transverse to the seat below this transmission shaft extending to a second wobble mechanism. The transmission shaft extends from the first wobble gear to the second wobble gear, so that the two wobble gear are synchronized with each other via the transmission shaft and cover substantially the same, dependent on the number of revolutions of the electric motor pivoting paths. The transmission shaft extending from the first wobble gear to the second wobble gear extends above the seat surface and thereby restricts the installation space required for spring deflection of the lower backrest region.
Aus der DE 101 46 144 A1 ist ferner ein Fahrzeugsitz mit einem Sitzteil und einer relativ zu diesem verstellbaren Rückenlehne bekannt, die in beidseits des Sitzteils angeordneten Lagern aufgenommen ist, die jeweils eine Getriebeanordnung umfassen, die die Schwenkbewegung eines Antriebs an die Rückenlehne übertragen. Jeder der an der Sitzfläche aufgenommenen Getriebeanordnung ist ein elektrischer Stellantrieb zugeordnet, die elektrisch zueinander synchronisierbar sind. Den Antrieben ist ein Steuergerät zugeordnet, in welchem die Umdrehungen der beiden elektrischen Stellantriebe miteinander verglichen werden. Die Umdrehungen werden mit Potentiometern oder Hallelementen erfasst.From DE 101 46 144 A1 a vehicle seat with a seat part and a relative to this adjustable backrest is also known, which is accommodated in both sides of the seat part arranged bearings, each comprising a gear arrangement, which transmit the pivotal movement of a drive to the backrest. Each of the received on the seat gear assembly is associated with an electric actuator, which are electrically synchronized with each other. The drives are assigned a control unit, in which the revolutions of the two electric actuators compared with each other. The revolutions are detected with potentiometers or Hall elements.
Die Aufgabe der vorliegenden Erfindung besteht darin, einen Fahrzeug- sitz der eingangs genannten Art mit neuartigen zueinander synchronisierbaren beidseitig angeordneten Antrieben für eine Rückenlehnenneigungsverstellung anzugeben.The object of the present invention is to provide a vehicle seat of the type mentioned above with novel synchronized mutually arranged drives for a backrest tilt adjustment.
Diese Aufgabe wird durch die Merkmale des Anspruchs 1 gelöst.This object is solved by the features of claim 1.
Vorteilhafte und zweckmäßige Weiterbildungen der Aufgabenlösung sind in den Unteransprüchen angegeben.Advantageous and expedient developments of the task solution are specified in the dependent claims.
Die Erfindung schlägt ein Neigungsverstellkonzept für die Rückenlehne vor, bei dem Motoren und Getriebe direkt in die Struktur der Rückenlehne, wahlweise innen oder außen, angeordnet sind. Es sind zwei Antriebe (Motor und Getriebe) vorgesehen, die spiegelbildlich gegenüberliegend angeordnet sind. Zur Synchronisation dieser beiden Antriebe werden diese elektrisch über eine geeignete Schaltung verbunden. Erfindungsgemäß sind die beiden Antriebe Spindelmotoren und werden zur Synchronisation beider Spindelmotoren deren Umdrehungen erfassende Ripple Counter verwendet. Für die genannten Antriebskonzepte sind Gleichstrommotoren vielfältiger Bauart geeignet, bei denen die Ripple Counter Technologie anwendbar ist. Ein Ripple Counter IC wertet ohne den Einsatz von Mechanik und Sensoren die Umdre- hungen von Gleichstrommotoren aus. Dazu analysiert der integrierte Schaltkreis (Ripple Counter (IC) typische Daten der Kennlinie des Motorstroms und bestimmt damit Position und Drehzahl des Motors. Die bei einem Gleichstrommotor entstehenden Kommutierungssignale werden als Rückkopplungsinformation genutzt, so dass eine sensorlose und damit kostengünstige Synchronisierung der beiden Antriebe möglich ist. Die Erfindung schlägt somit ein paarig angeordnetes Antriebskonzept für die Rückenlehnenneigungs- verstellung vor, welches die Komponenten deutlich kleiner und leichter macht, was bedeutet, dass die Getriebeeinheiten als auch die zu verwen denden Motoren deutlich kleiner bauen können.The invention proposes a tilt adjustment concept for the backrest, in which motors and transmissions are arranged directly in the structure of the backrest, optionally inside or outside. There are two drives (engine and transmission) are provided, which are arranged in mirror image opposite one another. To synchronize these two drives they are electrically connected via a suitable circuit. According to the invention, the two drives are spindle motors and are used to synchronize both spindle motors whose revolutions detecting ripple counter. For the drive concepts mentioned DC motors of various types are suitable, in which the ripple counter technology is applicable. A ripple counter IC evaluates the rotations of DC motors without the use of mechanics and sensors. For this purpose, the integrated circuit (ripple counter (IC) analyzes typical data of the characteristic of the motor current and thus determines the position and speed of the motor.) The commutation signals resulting from a DC motor are used as feedback information, so that a sensorless and thus cost-effective synchronization of the two drives is possible The invention thus proposes a paired drive concept for the backrest inclination adjustment, which makes the components significantly smaller and lighter, which means that the gear units and the engines to be used can build significantly smaller.
Der Spindelmotorantrieb kann mit rotierender Spindel oder transversal laufender Spindelmutter ausgebildet sein.The spindle motor drive can be designed with a rotating spindle or a transversally running spindle nut.
Alternativ ist eine Lösung mittels Spindelmotor und stehender Spindel und transversal an der Spindel laufendem Getriebe in paralleler Ausführung möglich.Alternatively, a solution by means of spindle motor and stationary spindle and transverse to the spindle running gearbox in parallel design is possible.
Motor und Getriebe können im Winkel zur Spindelwelle angeordnet sein. Alternativ kann auch die Motorwelle parallel zur Spindelwelle angeordnet sein.Motor and gear can be arranged at an angle to the spindle shaft. Alternatively, the motor shaft may be arranged parallel to the spindle shaft.
Die Erfindung soll nachfolgend anhand der beigefügten Zeichnung, in der ein Ausführungsbeispiel dargestellt ist, näher erläutert werden.The invention will be explained in more detail with reference to the accompanying drawings, in which an embodiment is shown.
Die Zeichnung zeigt einen Fahrzeugsitz 2 mit einem Sitzteil 4 und ei- nem Rückenlehnenteil 6, das zur Neigungsverstellung schwenkbar um beiderseits des Sitzteils vorgesehene Lager 8, 10 angeordnet ist. Den Lagern 8, 10 ist jeweils ein Getriebe 12, 14 und jedem Getriebe ein eigener Antrieb 16, 18 zugeordnet, die an einem Getriebeflansch 20, 22 angeordnet sind.The drawing shows a vehicle seat 2 with a seat part 4 and a backrest part 6, which is arranged for tilt adjustment pivotable about both sides of the seat part provided bearing 8, 10. The bearings 8, 10 are each a gear 12, 14 and each gear a separate drive 16, 18 associated, which are arranged on a transmission flange 20, 22.
Beide Antriebe 16, 18 sind zueinander synchronisiert, indem die Umdrehungen beider Antriebe erfasst und in einer elektronischen Steuereinrichtung 24 miteinander verglichen werden. Es kann auch die Schwenkbewegung des Lehnenteils mittels der Sensoren erfasst werden.Both drives 16, 18 are synchronized with each other by detecting the revolutions of both drives and compared with each other in an electronic control device 24. It can also be detected by the sensors, the pivotal movement of the backrest part.
Die Antriebe 16, 18 sind an sich bekannte Spindelmotoren. Zur Synchronisation beider Spindelmotoren werden deren Umdrehungen erfassende - A -The drives 16, 18 are known per se spindle motors. To synchronize both spindle motors whose revolutions are detected - A -
an sich bekannte Ripple Counter Technologien verwendet, indem bspw.die Kommutierungssignale der Gleichstrom - Spindelmotoren 16, 18 als Rückkopplungssignale über Signalleitungen 26, 28 der Steuereinrichtung 24 zugeführt werden, in der Ripple Counter ICs (an sich bekannt) die Signale analy- sieren und die Position und Drehzahl der Spindelmotoren bestimmen.Ripple counter technologies known per se are used, for example, by supplying the commutation signals of the DC spindle motors 16, 18 as feedback signals via signal lines 26, 28 to the control device 24, analyzing the signals in the ripple counter ICs (known per se) and analyzing the signals Determine the position and speed of the spindle motors.
Der Spindelmotor-Antrieb 16, 18 ist mit rotierender Spindel und transversal laufender Spindelmutter ausgebildet.The spindle motor drive 16, 18 is formed with a rotating spindle and transversely running spindle nut.
Der Spindemotor-Antrieb 16, 18 kann auch mit stehender Spindel und transversal an der Spindel laufendem als Spindelmutter ausgebildeten Getriebe ausgebildet sein. Der Spindelmotor 16, 18 kann eine parallel zur Spindel angeordnete Motorwelle aufweisen. The spindle motor drive 16, 18 can also be formed with a stationary spindle and transversely running on the spindle designed as a spindle nut transmission. The spindle motor 16, 18 may have a motor shaft arranged parallel to the spindle.
BezugszeichenlisteLIST OF REFERENCE NUMBERS
2 Fahrzeugsitz2 vehicle seat
Sitzteilseat part
6 Rückenlehnenteil6 backrest part
8 Lager8 bearings
10 Lager10 bearings
12 Getriebe12 gears
14 Getriebe14 gears
16 Antrieb16 drive
18 Antrieb18 drive
20 Getriebeflansch20 gear flange
22 Getriebeflansch22 gearbox flange
24 Steuereinrichtung24 control device
26 Signalleitung26 signal line
28 Signalleitung 28 signal line

Claims

Patentansprüche claims
1. Fahrzeugsitz (2) mit einem Sitzteil (4) und einem Lehnenteil (6), das zur Neigungsverstellung schwenkbar um beiderseits des Sitzteils vor- gesehene Lager (8, 10) angeordnet ist, denen jeweils ein Getriebe1. vehicle seat (2) with a seat part (4) and a backrest part (6) which is arranged for tilt adjustment pivotally mounted on both sides of the seat part bearing (8, 10), each of which a transmission
(12, 14) und jedem Getriebe ein eigener Antrieb (16,18) zugeordnet ist und beide Antriebe zueinander synchronisiert sind, indem die Umdrehungen beider Antriebe erfasst und in einer elektronischen Steuereinrichtung (24) miteinander verglichen werden, dadurch gekennzeich- net, dass die Antriebe (16, 18) Spindelmotoren sind und zur Synchronisation beider Spindelmotoren deren Umdrehungen erfassende Ripple Counter Technologien verwendet werden.(12, 14) and a separate drive (16,18) is assigned to each gear and both drives are synchronized to each other by the revolutions of both drives detected and compared in an electronic control device (24), characterized in that the Drives (16, 18) Spindle motors are used to synchronize both spindle motors with their revolving ripple counter technologies.
2. Fahrzeugsitz nach Anspruch 1 , dadurch gekennzeichnet, dass die Position der Spindelmotoren (16, 18) in der Steuereinrichtung (24) abspeicherbar und aus der Steuereinrichtung abrufbar sind.2. Vehicle seat according to claim 1, characterized in that the position of the spindle motors (16, 18) in the control device (24) can be stored and retrieved from the control device.
3. Fahrzeugsitz nach Anspruch 1 , dadurch gekennzeichnet, dass der Spindelmotor-Antrieb (16, 18) mit rotierender Spindel und transversal laufender Spindelmutter ausgebildet ist.3. Vehicle seat according to claim 1, characterized in that the spindle motor drive (16, 18) is formed with a rotating spindle and transversely running spindle nut.
4. Fahrzeugsitz nach Anspruch 1 , dadurch gekennzeichnet, dass der Spindelmotor-Antrieb (16, 18) mit stehender Spindel und transversal an der Spindel laufendem als Spindelmutter ausgebildetem Getriebe ausgebildet ist.4. Vehicle seat according to claim 1, characterized in that the spindle motor drive (16, 18) is formed with a stationary spindle and transverse to the spindle running as spindle nut trained gear.
5. Fahrzeugsitz nach Anspruch 1 oder 4, dadurch gekennzeichnet, dass der Motor eine parallel zur Spindel angeordnete Motorwelle aufweist. 5. Vehicle seat according to claim 1 or 4, characterized in that the motor has a motor shaft arranged parallel to the spindle.
PCT/DE2008/000169 2007-01-26 2008-01-24 Vehicle seat WO2008089754A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007003935.4 2007-01-26
DE102007003935A DE102007003935A1 (en) 2007-01-26 2007-01-26 vehicle seat

Publications (1)

Publication Number Publication Date
WO2008089754A1 true WO2008089754A1 (en) 2008-07-31

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ID=39473990

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2008/000169 WO2008089754A1 (en) 2007-01-26 2008-01-24 Vehicle seat

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DE (1) DE102007003935A1 (en)
WO (1) WO2008089754A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022210184A1 (en) 2022-09-27 2024-03-28 Robert Bosch Gesellschaft mit beschränkter Haftung Backrest adjustment system for adjusting a seat back of a vehicle seat, and method for operating such a

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0997341A1 (en) * 1998-10-29 2000-05-03 Aisin Seiki Kabushiki Kaisha Control device for movable member
DE10146144A1 (en) * 2001-09-19 2003-04-10 Bosch Gmbh Robert Electrically adjustable vehicle seat

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5295730A (en) * 1991-12-18 1994-03-22 Itt Corporation Double enveloping worm and gear seat recliner

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0997341A1 (en) * 1998-10-29 2000-05-03 Aisin Seiki Kabushiki Kaisha Control device for movable member
DE10146144A1 (en) * 2001-09-19 2003-04-10 Bosch Gmbh Robert Electrically adjustable vehicle seat

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022210184A1 (en) 2022-09-27 2024-03-28 Robert Bosch Gesellschaft mit beschränkter Haftung Backrest adjustment system for adjusting a seat back of a vehicle seat, and method for operating such a

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