DE102022103377A1 - Vehicle seat fitting and vehicle seat - Google Patents

Abstract

The invention relates to a vehicle seat fitting (1). The vehicle seat fitting (1) has a backrest fitting part (2), a seat cushion fitting part (3), a backrest locking device and an easy-entry unlocking device (25). According to the invention, the easy-entry unlocking device (25) uses a driver lever (10). The cam lever (10) has an actuating cam lever part (12) and an engagement cam lever part (13) which extend in opposite circumferential directions of a longitudinal locking cam plate (18). When the easy-entry function is executed, the engaging driver lever part (13) is subjected to a compressive force and subjected to buckling.

Description

TECHNICAL FIELD OF THE INVENTION

1. a) Der Fahrzeugsitzbeschlag muss einen eingestellten Neigungswinkel zwischen einem Sitzpolster des Fahrzeugsitzes mit einem zugeordneten Sitzpolster-Beschlagteil einerseits und einer Lehne des Fahrzeugsitzes mit einem zugeordneten Rückenlehnen-Beschlagteil andererseits sichern. Zu diesem Zweck findet zwischen dem Sitzpolster-Beschlagteil und dem Rückenlehnen-Beschlagteil ein Koppelgetriebe Einsatz, in dem der eingestellte Neigungswinkel beispielsweise über eine Selbsthemmung des Koppelgetriebes und/oder mittels einer Verrastung, Verriegelung oder anderweitigen Fixierung gesichert wird. Um lediglich einige Beispiele für einsetzbare Koppelgetriebe zu nennen, können Stirnradgetriebe, insbesondere in Ausgestaltung als Exzenterumlaufgetriebe, Einsatz finden, wobei beispielsweise ein Zahnrad mit einer Außenverzahnung von dem Sitzpolster-Beschlagteil ausgebildet oder gehalten sein kann, welches an einem von dem Sitzpolster-Beschlagteil ausgebildeten oder gehaltenen Zahnrad mit einer Innenverzahnung abwälzt. Hierbei kann die Zähnezahl der Innenverzahnung um einen Zahn oder mehrere Zähne größer sein als die Zähnezahl der Außenverzahnung, um die erforderliche Übersetzung herbeizuführen. Hinsichtlich einer derartigen Ausgestaltung eines Koppelgetriebes wird beispielhaft auf DE 44 36 101 A1 verwiesen. An einer Koppelwelle, über die auf beiden Seiten des Fahrzeugsitzes angeordnete Fahrzeugsitzbeschläge miteinander gekoppelt sind und über die ein manuell über das Handbetätigungsorgan erzeugtes Verstellmoment und/oder ein elektromotorisch erzeugtes Verstellmoment zur Verstellung des Neigungswinkels übertragen wird, kann über eine Exzenterverbindung das Zahnrad mit der Außenverzahnung (und mit diesem das Rückenlehnen-Beschlagteil) exzentrisch gelagert sein, so dass das Zahnrad mit der Außenverzahnung in Verlängerung des Exzenterhöchstpunkts in das Zahnrad mit der Innenverzahnung gedrückt wird. Hierbei ist die Exzenterverbindung üblicherweise reibschlüssig ausgebildet, wozu zwischen einer Innenfläche des Zahnrads mit der Außenverzahnung (oder eines zugeordneten Lagerrings) und einer Außenfläche eines von der Koppelwelle verdrehten Lagerkörpers ein Exzenter-Ringspalt ausgebildet ist mit in Umfangsrichtung variierender Höhe des Exzenter-Ringspalts. In dem Exzenter-Ringspalt sind zwei Keilsegmente angeordnet. Die Keilsegmente sind in Umfangsrichtung keilförmig mit gekrümmten Keilflächen ausgebildet und werden über eine Spreizfeder in Umfangsrichtung so auseinandergedrückt, dass diese zwischen der zylindrischen Innenfläche und der zylindrischen Außenfläche verklemmt werden. Eine derartige reibschlüssige Exzenterverbindung ist beispielsweise in DE 44 36 101 A1 beschrieben.
2. b) Des Weiteren muss eine Veränderung des Neigungswinkels über das Koppelgetriebe ermöglicht werden. Diese Veränderung des Neigungswinkels kann mittels eines manuellen Handbetätigungsorgangs, insbesondere eines Verstellrades, und/oder eines elektrischen Antrieb, der von dem Benutzer betätigt wird, herbeigeführt werden.
3. c) Soll der Innenraum des Fahrzeugs hinter dem Vordersitz durch Verschwenken der Rückenlehne des Vordersitzes nach vorne zugänglich gemacht werden, beispielsweise um zu ermöglichen, dass ein Passagier sich durch die vordere Tür an dem Fahrzeugsitz vorbei auf eine Rückbank setzen kann, muss eine Entriegelung der Rückenlehne ermöglicht werden, um ein freies Verschwenken der Rückenlehne unabhängig von dem Koppelgetriebe zu ermöglichen. Hierzu ist die Rückenlehne nicht fest mit dem zugeordneten Zahnrad des Koppelgetriebes verbunden. Vielmehr verfügt das Zahnrad über eine Verriegelungskontur, in die zur drehfesten Verbindung zwischen Sitzpolster-Beschlagteil und Zahnrad ein Verriegelungshebel eingreift. Ist eine freie Verschwenkung der Lehne erforderlich, wird über ein Rückenlehnen-Löseelement der Verriegelungshebel außer Eingriff mit der Verriegelungskontur gebracht. In bekannten derartigen Rückenlehnen-Entriegelungseinrichtungen ist im oberen Endbereich der Rückenlehne ein Betätigungselement, insbesondere ein Betätigungshebel vorgesehen, über den dann mittels eines Seilzuges ein Rückenlehnen-Lösebolzen bewegt werden kann, der wiederum den Verriegelungshebel außer Eingriff mit der Verriegelungskontur schwenkt. Eine derartige Rückenlehnen-Entriegelungseinrichtung ist beispielsweise aus DE 197 15 764 C2 bekannt.
4. d) Üblicherweise ist ein Fahrzeugsitz über Längsführungsschienen im Bodenbereich des Fahrzeugs in Längsrichtung des Fahrzeugs verschieblich, wobei die Verschiebung manuell oder über einen elektrischen Antrieb erfolgen kann. Eine einmal eingestellte Längsposition des Fahrzeugsitzes ist dann über eine Fahrzeugsitz-Längsverriegelung gesichert.
5. e) Wünschenswert kann sein, dass bei einer Betätigung der Rückenlehnen-Entriegelungseinrichtung zur Ermöglichung einer freien Verschwenkung der Rückenlehne und dem Verschwenken der Rückenlehne auch automatisch ein Entriegeln der Fahrzeugsitz-Längsverriegelung erfolgt, um mit oder nach der Verschwenkung der Rückenlehne nach vorne auch den Fahrzeugsitz in der Längsführungsschiene nach vorne schieben zu können und den Raum hinter dem Fahrzeugsitz besser zugänglich zu machen. Zu diesem Zweck kann ein Längsverriegelung-Entriegelungshebel relativ zu dem Fahrzeugsitzbeschlag drehbar gelagert sein. Der Längsverriegelungs-Entriegelungshebel ist in einem Endbereich über eine Kopplungsverbindung, insbesondere einen Bowdenzug, mit der Fahrzeugsitz-Längsverriegelung so gekoppelt, dass bei einer Verdrehung des Längsverriegelungs-Entriegelungshebels die Fahrzeugsitz-Längsverriegelung entriegelt wird. Zur Gewährleistung der Verdrehung des Längsverriegelungs-Entriegelungshebels kann ein Mitnehmerhebel verdrehbar an dem Rückenlehnen-Beschlagteil gelagert sein. Bei einer Betätigung der Rückenlehnen-Entriegelungseinrichtung und eine hierdurch ausgelöste Bewegung des Rückenlehnen-Löseelements kann auch der Mitnehmerhebel in eine Mitnehmerstellung verschwenkt werden. In der Mitnehmerstellung kommt der Mitnehmerhebel (unter Umständen nach einer kleinen freien Verschwenkung des Rückenlehnen-Beschlagteils nach vorne) mit einem Mitnehmer einer Längsverriegelung-Mitnehmerscheibe in Eingriff. Über diesen Eingriff erfolgt die Herstellung einer Antriebsverbindung des Längsverriegelung-Entriegelungshebels mit dem Rückenlehnen-Beschlagteil, so dass eine Verschwenkung des Rückenlehnen-Beschlagteils mit einer Verdrehung des Längsverriegelung-Entriegelungshebels, einer Betätigung der Kopplungsverbindung (insbesondere des Bowdenzugs) und der Entriegelung der Fahrzeugsitz-Längsverriegelung einhergeht. Hinsichtlich beispielhafter Ausgestaltungen wird auf die Druckschriften DE 10 2006 001 530 A1 , DE 10 2005 060 484 A1 und DE 10 2010 026 702 A1 verwiesen.

In motor vehicles, vehicle seat fittings for a front seat of a vehicle alternatively or cumulatively ensure the following functions:

1. a) The vehicle seat fitting must secure a set angle of inclination between a seat cushion of the vehicle seat with an associated seat cushion fitting on the one hand and a backrest of the vehicle seat with an associated backrest fitting on the other. For this purpose, a coupling mechanism is used between the seat cushion fitting and the backrest fitting, in which the adjusted angle of inclination is secured, for example, via a self-locking mechanism of the coupling mechanism and/or by means of a catch, lock or other fixation. To name just a few examples of coupling gears that can be used, spur gears, in particular in the form of eccentric planetary gears, can be used, in which case, for example, a gear wheel with external teeth can be formed or held by the seat cushion fitting part, which can be formed or held gear rolls off with an internal toothing. The number of teeth on the internal toothing can be greater by one tooth or more than the number of teeth on the external toothing in order to bring about the required translation. With regard to such a design of a linkage is exemplified DE 44 36 101 A1 referred. The gear wheel with the external teeth ( and with this the backrest fitting part) be mounted eccentrically, so that the gear wheel with the external teeth is pressed into the gear wheel with the internal teeth in an extension of the eccentric peak. In this case, the eccentric connection is usually designed as a friction fit, for which purpose an eccentric annular gap is formed between an inner surface of the gear wheel with the external teeth (or an associated bearing ring) and an outer surface of a bearing body rotated by the coupling shaft, with the height of the eccentric annular gap varying in the circumferential direction. Two wedge segments are arranged in the eccentric annular gap. The wedge segments are wedge-shaped in the circumferential direction with curved wedge surfaces and are pressed apart in the circumferential direction via an expanding spring in such a way that they are clamped between the cylindrical inner surface and the cylindrical outer surface. Such a frictional eccentric connection is, for example, in DE 44 36 101 A1 described.
2. b) Furthermore, it must be possible to change the angle of inclination via the linkage. This change in the angle of inclination can be brought about by means of a manual operating mechanism, in particular an adjusting wheel, and/or an electric drive which is operated by the user.
3. c) If the interior of the vehicle behind the front seat is to be made accessible by swiveling the backrest of the front seat forwards, for example to enable a passenger to sit through the front door past the vehicle seat and onto a back seat, the backrest must be unlocked be made possible to allow free pivoting of the backrest independently of the linkage. For this purpose, the backrest is not firmly connected to the associated gear wheel of the linkage. Rather, the gear wheel has a locking contour into which a locking lever engages for the non-rotatable connection between the seat cushion fitting part and the gear wheel. If free pivoting of the backrest is required, the locking lever is disengaged from the locking contour via a backrest release element. In known such backrest unlocking devices, an actuating element, in particular an actuating lever, is provided in the upper end region of the backrest, via which a backrest release bolt can then be moved by means of a cable pull, which in turn pivots the locking lever out of engagement with the locking contour. Such a backrest unlocking device is, for example DE 197 15 764 C2 known.
4. d) A vehicle seat can usually be displaced in the longitudinal direction of the vehicle via longitudinal guide rails in the floor area of the vehicle, with the displacement being able to take place manually or via an electric drive. A longitudinal position of the vehicle seat, once it has been set, is then secured via a longitudinal vehicle seat lock.
5. e) It may be desirable that when the backrest unlocking device is actuated to enable free pivoting of the backrest and pivoting of the backrest, the longitudinal locking of the vehicle seat is also automatically unlocked in order to also unlock the vehicle seat with or after the forward pivoting of the backrest to be able to push the longitudinal guide rail forward and to make the space behind the vehicle seat more accessible. For this purpose, a longitudinal locking/unlocking lever can be mounted so that it can rotate relative to the vehicle seat fitting. The longitudinal locking/unlocking lever is coupled in one end area via a coupling connection, in particular a Bowden cable, to the vehicle seat longitudinal locking in such a way that when the longitudinal locking/unlocking lever is rotated, the vehicle seat longitudinal locking is unlocked. To ensure the twisting of the longitudinal locking/unlocking lever, a driver lever can be mounted on the backrest fitting so that it can rotate. When the backrest unlocking device is actuated and the backrest release element is moved as a result, the driver lever can also be pivoted into a driver position. In the driver position, the driver lever comes into engagement (possibly after a small, free forward pivoting of the backrest fitting part) with a driver of a longitudinal locking driver disk. This intervention creates a drive connection between the longitudinal locking/unlocking lever and the backrest fitting, so that the backrest fitting can be pivoted by rotating the longitudinal locking/unlocking lever, actuating the coupling connection (in particular the Bowden cable) and unlocking the longitudinal locking of the vehicle seat comes along. With regard to exemplary configurations, reference is made to the publications DE 10 2006 001 530 A1 , DE 10 2005 060 484 A1 and DE 10 2010 026 702 A1 referred.

The above functions for enabling free pivoting of the backrest forward according to c) and/or free movement of the vehicle seat forward according to e) when the longitudinal vehicle seat lock is unlocked are also referred to as the so-called “easy entry function”.

Correspondingly, when the backrest unlocking device is unlocked, it is also possible for the backrest to be pivoted backwards and/or for unlocking of the longitudinal vehicle seat locking mechanism, for the vehicle seat to be moved backwards.

It is also possible that when the backrest unlocking device is actuated, initially the backrest is only freely pivoted forwards for a first pivoting angle, without the longitudinal locking of the vehicle seat being unlocked, while the backrest is then pivoted further through the first pivoting angle In addition, the longitudinal locking of the vehicle seat is unlocked, so that the vehicle seat can be moved freely along the longitudinal guide rails.

The present invention relates to a vehicle seat fitting and a vehicle seat with a vehicle seat fitting that ensures an easy-entry function.

STATE OF THE ART

DE 103 53 242 B3 discloses a vehicle seat fitting that ensures an easy-entry function. An actuating lever, which is arranged in the upper end area of a backrest, actuates, via a Bowden cable, an end area of a straight driver lever against the action of a spring. The other end area of the driver lever engages in a rotatably mounted longitudinal locking driver disk. A Bowden cable is articulated in the radially outer end region of a longitudinal locking/unlocking lever of the longitudinal locking driver disk and is connected to a vehicle seat longitudinal locking in such a way that the pivoting of the longitudinal locking release lever triggered by the actuating lever on the backrest leads to the unlocking of the vehicle seat longitudinal locking .

DE 10 2006 001 530 A1 discloses the guarantee of an easy-entry function without using a driver lever. In this case, a longitudinal locking/unlocking lever coupled to the vehicle seat longitudinal lock via a Bowden cable has a first lever part, which is connected to the Bowden cable, and on the opposite side has a second lever part, which interacts with an unlocking bolt.

According to EP 2 352 660 B1 an actuation of a longitudinal locking release lever takes place via a driver lever. The driver lever has an actuating driver lever part, on which the user can apply an actuating force manually via a Bowden cable, and an engagement driver lever part, which is used for unlocking the longitudinal locking of the vehicle seat in an interlocking drive plate engages. The actuation driver lever part and the engagement driver lever part can be pivoted relative to one another via a pivot bearing in the region of its pivot axis against the action of a spring, which means that movement of the actuation driver lever part by manual actuation is also possible when the engagement driver lever part is blocked. since this is arranged in a peripheral area behind a driver of the longitudinal locking driver disk.

DE 20 2009 002 580 U1 discloses the design of a longitudinal vehicle seat lock that can be unlocked by actuating a Bowden cable.

EP 3 915 829 A1 discloses a vehicle seat fitting with a driver, in which the engagement driver lever part is designed as an elastic arm, in particular with a leaf spring, in order to enable relative movement between the driver of the engagement driver lever part and the actuating driver lever part.

Further state of the art is out DE 20 2006 015 871 U1 known.

OBJECT OF THE INVENTION

The present invention is based on the object of proposing a vehicle seat fitting and a vehicle seat which is improved in particular with regard to the installation space conditions and/or the mechanical stresses.

SOLUTION

The object of the invention is achieved according to the invention with the features of the independent patent claims. Further preferred configurations according to the invention can be found in the dependent patent claims.

DESCRIPTION OF THE INVENTION

The invention proposes a vehicle seat fitting. The vehicle seat fitting has a backrest fitting part, which is fastened to a backrest frame, for example, and a seat cushion fitting part, which is fastened to a seat cushion frame, for example. The backrest fitting part and the seat cushion fitting part can be pivoted relative to one another about an adjustment axis, with which a change in the relative inclination of the backrest with respect to the seat cushion can be brought about. The vehicle seat fitting also has a backrest locking device. Using the backrest locking device, it is possible to lock a (manually or motor-driven) set angle of inclination between the backrest fitting part and the seat cushion fitting part about the adjustment axis.

The vehicle seat fitting according to the invention also has an easy-entry unlocking device. If the easy-entry unlocking device is actuated (for example via a lever on the upper lateral end area of the backrest), this actuation leads to the unlocking of the backrest locking device, so that the backrest can be pivoted forward freely by the operator. When the easy-entry unlocking device is actuated (at the same time or after a certain pivoting of the backrest has been brought about), a driver lever is also pivoted. The driver lever serves (indirectly) to bring about an unlocking of a vehicle seat longitudinal locking. The driver lever is rotatably mounted in a pivot bearing. The cam lever has two lever parts, namely an actuating cam lever part and an engagement cam lever part. These two lever parts extend from the pivot bearing path. For unlocking the longitudinal locking of the vehicle seat, the driver lever engages with the engaging driver lever part in a longitudinal locking driver disk. The longitudinal lock drive plate has or carries a longitudinal lock release lever.

In this respect, the vehicle seat fitting can in principle be designed in accordance with the vehicle seat fittings mentioned at the outset (without this necessarily being the case). It is also possible, for example, for the driver lever to be elastic in the area of the actuating driver lever part, or to have a leaf spring, or to have two lever parts that can be pivoted relative to one another against a spring (cf. EP 2 352 660 B1 ).

According to the invention, the actuation cam lever part and the engagement cam lever part extend from the pivot bearing in opposite circumferential directions of the longitudinal lock cam plate. This does not mean that the two driver lever parts must be oriented exactly in the circumferential direction. Rather, these have at least components in their longitudinal extent, which start from the pivot bearing and which are oriented in opposite circumferential directions of the longitudinal locking driver disk. In this case, the engagement driver lever part extends in the circumferential direction of the longitudinal locking driver disk, into which the longitudinal locking driver disk is rotated when the vehicle seat longitudinal locking mechanism is unlocked.

A particularly compact embodiment can be created by means of the selected extensions of the two driver lever parts, since the two driver lever parts can enclose the longitudinal locking driver disk relatively closely on the outside of the same. It is also possible that these extensions of the driver lever parts result in changed force and torque conditions on the driver lever in view of the actuating force acting on the one hand and the driver force between the engagement driver lever part and the longitudinal locking driver disk. Finally, the fact that the engagement driver lever part extends in the circumferential direction of the longitudinal locking driver disk, into which the longitudinal locking driver disk is rotated when the vehicle seat longitudinal lock is unlocked, means that (in contrast to the prior art) the engagement driver lever part is subjected to a compressive force, which has proven to be advantageous with regard to the design of the driver lever and the forces acting and the deformations caused. Thus, according to the invention, the engagement driver lever part can be subjected to buckling in particular.

In principle, the driver lever with the engagement driver lever part and the actuation driver lever part can have any geometry, any course of the width of the driver lever parts and any linear or curved course of the longitudinal axes of the driver lever parts. For one proposal of the invention, the axes of extension of the actuating driver lever part on the one hand and the engagement driver lever part on the other hand form an angle from the pivot bearing, opening in the direction of the longitudinal locking driver disk, which angle is less than 150° (in particular less than 120°, less than 100°, less than 90° or even less than 80°). In the event that at least one driver lever part is curved, the axis defined by the pivot axis of the pivot bearing of the driver lever part and the point of application of the actuating force or unlocking force on the driver lever part is viewed under the axis of extension of this driver lever part. Choosing an angle as indicated above leads to a compact configuration in which the driver lever can conform to the outer contour of the longitudinal locking driver disk and the pivot axis of the pivot bearing of the driver lever can be arranged at a small distance from the pivot axis of the longitudinal locking driver disk. Here, in an operating position in which the engagement driver lever part is not in engagement with the longitudinal locking driver disk, the longitudinal locking driver disk can be arranged within the extension axes of the actuating driver lever part and the engagement driver lever part, i.e. in the area delimited by the mentioned extension axes. preferably acute-angled surface.

For one proposal of the invention, the easy-entry unlocking device has a spring element. The spring element provides a compensating path when the easy-entry unlocking device is actuated. This compensating path can be used when, as a result of manual operation by the user, movement of the actuating cam lever is required, also to ensure reliable unlocking of the backrest locking device, while the engagement cam lever part is prevented from moving into the engaged position (which This is particularly the case if the backrest has been swiveled very far forward when the easy-entry function is triggered). On the other hand, the spring element can also ensure a certain decoupling for manual actuation and/or cushioning of shocks occurring during actuation. The spring element can be integrated into the actuating Bowden cable, act between the Bowden cable and the driver lever, be an elastic arm of a driver lever part, or be interposed between driver lever parts that can be pivoted relative to one another.

For a possible embodiment, the pivot bearing for the rotatable mounting of the longitudinal locking driver disk is mounted on a coupling rod. The coupling rod is used to couple the vehicle seat fittings on different sides of the vehicle seat to one another, with the manual or motor-generated adjusting moments for adjusting the inclination of the backrest also being able to be transmitted via the coupling rod.

For a particularly compact design of the vehicle seat fitting, the distance between the pivot bearing of the driver lever and a lateral surface of the longitudinal locking driver disk (in particular an imaginary cylindrical lateral surface with the radius with which the engagement driver lever part interacts with the driver of the longitudinal locking driver disk) is particularly small chosen. It is possible that the distance is smaller than the length of the actuation driver lever part and/or the length of the engagement driver lever part. In particular, the distance is less than 90% or even less than 80% of the length of the actuating cam lever part and/or the length of the engagement cam lever part. It is alternatively or additionally possible that the distance is smaller than that Radius of the longitudinal locking drive plate or the imaginary cylindrical lateral surface. Here, the distance can be less than 90%, less than 80% or less than 70% of the radius.

A further solution to the problem on which the invention is based is a vehicle seat which has a vehicle seat fitting as has been explained above. In this case, the vehicle seat has a longitudinal vehicle seat lock. The longitudinal locking of the vehicle seat is then coupled via a coupling connection, in particular a Bowden cable, to a longitudinal locking/unlocking lever, which in turn is non-rotatably connected to the longitudinal locking driver disk or is part of the same.

Advantageous developments of the invention result from the patent claims, the description and the drawings.

The advantages of features and combinations of several features mentioned in the description are merely exemplary and can have an effect alternatively or cumulatively without the advantages necessarily having to be achieved by embodiments according to the invention.

The following applies to the disclosure content - not the scope of protection - of the original application documents and the patent: Further features can be found in the drawings - in particular the illustrated geometries and the relative dimensions of several components to one another as well as their relative arrangement and operative connection. The combination of features of different embodiments of the invention or of features of different patent claims is also possible, deviating from the selected dependencies of the patent claims and is hereby suggested. This also applies to those features that are shown in separate drawings or are mentioned in their description. These features can also be combined with features of different patent claims. Likewise, features listed in the patent claims can be omitted for further embodiments of the invention, but this does not apply to the independent patent claims of the granted patent.

The features mentioned in the patent claims and the description are to be understood with regard to their number in such a way that exactly this number or a larger number than the number mentioned is present without the need for an explicit use of the adverb “at least”. So if, for example, an element is mentioned, this is to be understood in such a way that exactly one element, two elements or more elements are present. The features listed in the patent claims can be supplemented by further features or can be the only features that the subject matter of the respective patent claim has.

The reference signs contained in the claims do not limit the scope of the subject-matter protected by the claims. They only serve the purpose of making the claims easier to understand.

character list

• 1 zeigt einen Fahrzeugsitzbeschlag in einer Seitenansicht, wobei die Easy-Entry-Entriegelungseinrichtung nicht betätigt ist.
• 2 zeigt den Fahrzeugsitzbeschlag gemäß 1 in einer Seitenansicht, wobei hier die Easy-Entry-Entriegelungseinrichtung betätigt worden ist, ohne dass eine Verschenkung der Rückenlehne nach vorne erfolgt ist.
• 3 zeigt den Fahrzeugsitzbeschlag gemäß 1 und 2, wobei hier die Easy-Entry-Entriegelungseinrichtung betätigt ist und die Rückenlehne nach vorne verschwenkt worden ist.

The invention is further explained and described below with reference to preferred exemplary embodiments illustrated in the figures.

• 1 shows a vehicle seat fitting in a side view, with the easy-entry unlocking device not being actuated.
• 2 shows the vehicle seat fitting according to 1 in a side view, in which case the easy-entry unlocking device has been actuated without the backrest being given away forward.
• 3 shows the vehicle seat fitting according to 1 and 2 , in which case the easy-entry unlocking device is actuated and the backrest has been pivoted forward.

FIGURE DESCRIPTION

1 shows a vehicle seat fitting 1 . The vehicle seat fitting 1 has a backrest fitting part 2 and a seat cushion fitting part 3 . The backrest fitting part 2 can be adjusted about an adjustment axis 4 relative to the seat cushion fitting part 3, with which the angle of inclination of the backrest attached to the backrest fitting part 2 can be adjusted. This adjustment of the angle of inclination can be carried out by the user by motor and/or manually, in both cases the torque for adjusting the inclination being able to be transmitted via a coupling rod 5 .

The vehicle seat fitting 1 has a backrest locking device 6, of which only one backrest unlocking bolt 7 is shown in the figures. The backrest unlocking bolt 7 can be actuated by means of a Bowden cable 8 via an actuating lever or button on the backrest, with which the backrest unlocking device 6 can be unlocked, so that the backrest fitting part 2 can pivot freely relative to the seat cushion fitting part 3 about the adjustment axis 4 is possible.

The backrest release bolt 7 is connected to a driver lever 10 via a spring 9 in a force flow parallel to the backrest release device 6 . The driver lever 10 is pivotably mounted in a pivot bearing 11 on the backrest fitting part 2 . The driver lever 10 has two driver lever parts, namely an actuating driver lever part 12 and an engagement driver lever part 13.

An axis of extension 14 of the actuating driver lever part 12 is defined by a pivot axis 15 of the pivot bearing 11 and the point of action of the spring 9 on the actuating driver lever part 12. In contrast, an axis of extension 16 of the engagement driver lever part 13 is defined by the pivot axis 15 and the engagement area of the engagement driver lever part 13 into a longitudinal locking driver disk 18. The driver lever parts 12, 13 are designed and oriented in such a way that the angle 17 between the axes of extension 14, 16 is less than 150°, less than 140°, less than 130°, less than 120° , less than 110°, less than 100°, less than 90° or even less than 80°.

A longitudinal locking driver disk 18 is rotatably mounted about the adjustment axis 4 via a pivot bearing. The longitudinal locking driver disk 18 has a driver 19 in the form of a radial projection 20 . The longitudinal locking driver disk 18 carries a longitudinal locking driver lever 21. In the radially outer end region, a coupling connection 22, in particular a Bowden cable 23, is articulated on the longitudinal locking driver lever 21, which is connected to a vehicle seat longitudinal locking device in a manner not shown here.

A spring 24 acts on the driver lever 10 in 1 counterclockwise, so that the spring 24 urges the actuating cam lever part 12 in the direction of the longitudinal lock cam plate 18, while the engagement cam lever part 13 is biased away from the longitudinal lock cam plate 18. in the in 1 illustrated operating position of the driver lever 10 is acted upon by the spring 24 against a stop that specifies this operating position.

• Für den Betriebszustand gemäß 1 ist die Rückenlehnen-Entriegelungseinrichtung 6 verriegelt, so dass die Neigung der Rückenlehne fest vorgegeben ist. Dies entspricht beispielsweise dem Zustand, wenn der Fahrer oder Beifahrer auf dem Fahrzeugsitz sitzt und ein Fahrbetrieb vorliegt.

The functioning of the vehicle seat fitting 1 is as follows:

• For the operating condition according to 1 the backrest release device 6 is locked, so that the inclination of the backrest is fixed. This corresponds, for example, to the situation when the driver or passenger is sitting on the vehicle seat and the vehicle is being driven.

If a person actuates the easy-entry unlocking device 25, which is formed with the backrest unlocking device 6, the spring 9, the driver lever 10, the longitudinal locking driver disk 18 and the longitudinal locking driver lever 21 (possibly also with the Bowden cable 8 and the Actuating lever and the Bowden cable 23 and the longitudinal vehicle seat lock), on the one hand, the backrest release bolt 7 unlocks the backrest, so that the backrest and the backrest fitting part 2 can be pivoted freely. At the same time, the movement 26 of the backrest unlocking bolt 7 as a result of the actuation of the easy-entry unlocking device 25 results in the spring 9 being tensioned and exerting a tensile force on the actuating driver lever part 12 . This tensile force generates a moment, which leads to a pivoting of the driver lever 10 against the action of the spring 24 . As a result of this movement, the engagement driver lever part 13 is placed against the lateral surface of the longitudinal locking driver disk 18 ( 2 ). Initially, in this pivoted position of the driver lever 10, an end face 27 of the engagement driver lever part 13, which forms a driver 28, is located in the circumferential direction about the adjustment axis 4 at a distance 29 from the driver 19 of the longitudinal locking driver disk 18 Backrest with the backrest fitting part 2 according to the inclination angle 2 to the angle of inclination in 3 , the pivoting leads to the elimination of the distance 29, with which the end face 27 of the engagement driver lever part 13 comes to rest against the driver 19 of the longitudinal locking driver disk 18. Further pivoting then leads to the pivoting of the backrest fitting part 2 being transferred via the contact between the drivers 19, 28 into a pivoting of the longitudinal locking driver disk 18 and the longitudinal locking driver lever 21, which in turn actuates the Bowden cable 23 and a Unlocking of the longitudinal vehicle seat locking takes place.

In 1 is a distance 30 of the pivot bearing 11, here the pivot axis 15 of the pivot bearing 11, from the lateral surface of the longitudinal locking driver disk 18, whereby this lateral surface can also be an imaginary lateral surface, the radius of which corresponds to the radius with which the engagement -Driver lever part 12 with the driver 19 of the longitudinal locking drive disk 18 comes into operative connection. Can be seen in 1 that the distance 30 is smaller than the longitudinal extensions of the actuator sion driver lever part 12 and the engagement driver lever part 13 and is also smaller than the radius of the longitudinal locking driver disk 18 or is smaller than the radius of the aforementioned (fictitious) lateral surface.

During the normal adjustment of the backrest via a manual handwheel or a motor, there is no rotation of the longitudinal locking driver disk 18. Rather, this is only possible if, as explained, the easy-entry unlocking device 25 is actuated and the drivers 19, 28 are engaged with one another .

In a conventional vehicle seat, the pivoting angle of the backrest for the comfort adjustment, ie the adjustment by the user according to preferences and the available space, may be separate from the pivoting angle for performing the easy-entry function. As a result, for conventional vehicle seat fittings, there may be a permanent coupling of a driver disk to the Bowden cable for unlocking the longitudinal vehicle seat lock, since the different swivel angle ranges prevent the longitudinal vehicle seat lock from being unlocked when the user makes a comfort adjustment .

It can be problematic if the comfort adjustment takes place by means of a motor and when the maximum angle of the comfort adjustment is reached, a stop is used to limit the comfort adjustment. If the easy-entry function is then executed and pivoting takes place beyond the pivoting angle specified by the stop, the system on the stop to limit the comfort adjustment leads to a blockage with an undesirable force being exerted on a gear used can damage the gearbox.

The configuration according to the invention is used in particular in connection with an electric comfort adjustment by means of a motor in which there are not two stops, namely a stop for limiting the comfort adjustment and a stop for limiting the easy-entry function, but rather a common stop which specifies the pivoting for the comfort adjustment and the easy-entry function for the same pivoting angle. In this case, there must be a selective coupling of the pivoting movement of the backrest with the fore and aft locking driver lever when the easy-entry function is performed, while this coupling must not occur when a comfort adjustment is performed. This selective coupling ensures the configuration according to the invention.

Reference List

1

vehicle seat fitting

2

Backrest fitting part

3

Seat Pad Hardware

4

adjustment axis

5

coupling rod

6

Backrest release device

7

Backrest release bolt

8th

bowden cable

9

Feather

10

driver lever

11

swivel bearing

12

Actuation driver lever part

13

engagement cam lever part

14

axis of extension

15

pivot axis

16

axis of extension

17

angle

18

Longitudinal locking drive plate

19

driver

20

head Start

21

Longitudinal locking driver lever

22

coupling connection

23

bowden cable

24

Feather

25

Easy-Entry unlocking device

26

Movement

27

face

28

driver

29

Distance

30

Distance

QUOTES INCLUDED IN DESCRIPTION

This list of documents cited by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent Literature Cited

• DE 4436101 A1 [0001]
• DE 19715764 C2 [0001]
• DE 102006001530 A1 [0001, 0007]
• DE 102005060484 A1 [0001]
• DE 102010026702 A1 [0001]
• DE 10353242 B3 [0006]
• EP 2352660 B1 [0008, 0016]
• DE 202009002580 U1 [0009]
• EP 3915829 A1 [0010]
• DE 202006015871 U1 [0011]

Claims (7)

Vehicle seat fitting (1) with a) a backrest fitting part (2) and a seat cushion fitting part (3) which can be pivoted relative to one another about an adjustment axis (4), b) a backrest locking device via which an angle of inclination between the backrest fitting part (3) and the seat cushion fitting part (3) can be locked about the adjustment axis (4), c) an easy-entry unlocking device (25), which can be actuated ca) both to unlock the backrest locking device cb) and a pivoting of a driver lever (10) can also be brought about, which results in an unlocking of a longitudinal vehicle seat lock, d) the driver lever (10) da) being rotatably mounted in a pivot bearing (11), db) an actuating driver lever part (12 ) and an engagement driver lever part (13) which extend from the pivot bearing (11), and dc) engages with the engagement driver lever part (13) in a longitudinal locking driver disk (18) for unlocking the longitudinal locking of the vehicle seat, thereby characterized in that e) the actuating driver lever part (12) and the engagement driver lever part (13) extend from the pivot bearing (11) in opposite circumferential directions of the longitudinal locking driver disk (18) and f) the engagement driver lever part (13) extends in the circumferential direction of the longitudinal locking driver disk (18), in which the longitudinal locking driver disk (18) is rotated for unlocking the vehicle seat longitudinal locking. Vehicle seat fitting (1) according to claim 1 , characterized in that the extension axes (14, 16) of the actuation driver lever part (12) and the engagement driver lever part (13) from the pivot bearing (11) form an angle (17) opening in the direction of the longitudinal locking driver disk (18). , which is less than 150°. Vehicle seat fitting (1) according to claim 1 or 2 , characterized in that in an operating position in which the engagement driver lever part (13) is not in engagement with the longitudinal locking driver disk (18), the longitudinal locking driver disk (18) within the axes of extension (14, 16) of the actuating driver lever part (12) and the engagement cam lever part (13). Vehicle seat fitting (1) according to one of the preceding claims, characterized in that the easy-entry unlocking device (25) has a spring (9) which provides a compensating path when the easy-entry unlocking device (25) is actuated. Vehicle seat fitting (1) according to one of the preceding claims, characterized in that the pivot bearing (11) for the rotatable mounting of the longitudinal locking driver disk (18) on a coupling rod (5) which couples the vehicle seat fittings (1) to one another on different sides of the vehicle seat, is mounted. Vehicle seat fitting (1) according to one of the preceding claims, characterized in that a distance (30) of the pivot bearing (11) of the driver lever (10) from a lateral surface of the longitudinal locking driver disk (18) a) is smaller than the length of the actuating driver lever part (12) and/or is smaller than the length of the engagement driver lever part (13) and/or b) is smaller than the radius of the longitudinal locking driver disc (18). Vehicle seat with a vehicle seat fitting (1) according to one of the preceding claims and a longitudinal vehicle seat lock which is coupled to the longitudinal locking driver lever (21) via a coupling connection (22).

Images