DE102014101529A1 - Actuator and vehicle seat with the actuator - Google Patents

Abstract

The invention relates to an actuating device (5) for a vehicle seat (1), wherein the actuating device (5) comprises: an actuating lever (8) for actuation by a user, a first pivotable control disk (9) and a second pivotable control disk (10), wherein the actuating lever (8), the first control disk (9) and the second control disk (10) are independently pivotable and coupled by driving means (24, 25, 26, 27) in their pivotal movements, one attached to the first control disk (9) first cable (10) and a second control cable (10) attached to the second cable (17), a first cable (15) pivotable first functional lever (20) and a second cable (17) pivotable second functional lever (22) , wherein the actuating device (5) is adjustable between at least the following positions: a starting position (0) when the actuating lever (8), a temporary Zwischenstel unactuated with partially pivoted actuating lever (8), pivoted first functional lever (20) and not pivoted second functional lever (22), and a fully actuated position (II) with fully pivoted operating lever (8), pivoted first functional lever (20) and pivoted second functional lever (22). Thus, the cables can be delayed, optionally operated with different strokes.

Description

The invention relates to an actuating device for a vehicle seat, in particular for a vehicle seat adjustment system of a vehicle seat, and a vehicle seat with such an actuating device.

Vehicle seats with a seat part and a backrest often allow function adjustments of the backrest, in particular by folding the backrest. Such a function adjustment can in particular be an easy entry position for easier access to a rear row of seats, in which the backrest is partly folded forward. Another function adjustment is z. B. the stowed position with fully folded backrest. To enable such function adjustments, a backrest locking device (recliner locking device) is generally provided between the seat part and the backrest, which is locked in a starting position and thus allows the seat position of the vehicle seat, in the possibly tilt adjustments of the backrest within a comfort range possible are. The backrest locking device can be unlocked by the user via an actuator to be folded forward to the operative position.

Easy entry adjustments in this case generally allow a combined unlocking of the backrest locking device and the seat rail longitudinal locking means of a single actuator. The user can with an operation, for. B. by pivoting an actuating lever at the upper end of the backrest, both locks release, then fold the backrest forward and advance the vehicle seat. Thus, an operation with one hand is possible.

The backrest lock is released in the folded Easy Entry position; In this case it is advantageous if a self-holding is provided, in which the backrest lock is automatically held in its unlocked position and thus the user does not need to operate the actuator after unlocking; when folding back the backrest, an automatic engagement of the backrest locking device is advantageous, so that the user can also perform this return adjustment with little effort.

The DE 10 2004 052 747 B3 describes a device for the simultaneous actuation of two cables for use in a motor vehicle seat, in which a user to be pivoted operating lever pivots a two-armed lever having a curved arc on a first lever arm, which serves to actuate a second lever to which the second Cable is tethered. By means of such lever systems with a plurality of levers offset in their pivot axes, control cams and mating surfaces can be formed with different pivot kinematics.

The DE 10 2005 060 483 A1 describes an actuator in which a first cable is attached to the operating lever and is pulled directly, and subsequently two single or one combined cable with two Seilzugbereichen is actuated.

The DE 10 2004 015 451 A1 describes a further embodiment in which a first cable is attached directly to an operating lever and another cable is added to a control disk, which is pivoted indirectly by the actuating lever.

Such cable systems or controls with cables already allow the simultaneous activation of two unlocking. In some adjustments, however, this simultaneous actuation of the two unlockings is distracting.

The invention has for its object to provide an actuator for a vehicle seat and such a vehicle seat, which allows a relatively low operating effort, a higher variability in the design of the actuators.

This object is achieved by an actuating device according to claim 1. Furthermore, a vehicle seat is provided with such an actuator.

The invention is based on the idea successively or successively to activate two functions by an actuating movement of the actuating lever; Thus, a temporally decoupled activation of the functions is possible.

These functions can in particular a first release, z. B. a seat rail longitudinal lock, and a second release, z. B. a backrest locking device to be.

The two unlockings or actuations are achieved here in different pivot positions of the actuating lever. Here, at least one intermediate position (or first intermediate position) are provided with partially pivoted actuating lever and a fully actuated position of the actuating lever; In principle, other positions can also be provided in order to enable further functions.

Thus, by pivoting the operating lever, the user can first activate a first function and subsequently activate the second function with the same pivoting movement.

Two control discs are pivotally provided; the control discs can basically be formed with any shape, z. B. circular, but also with others. When the actuating lever is pivoted, the user first actuates the first control disk, which pulls a first cable; the second control cable provided on the second control disk is preferably not yet actuated initially. Only after the intermediate position, the second control disk is subsequently operated with the second cable, so that at least two separate or with time offset, d. H. Functions which can be activated in different swivel positions can be formed.

The actuating lever is coupled via a first driving system with the first control disk. The temporally offset activation of the second control disk is advantageously achieved via a second entrainment system between the second control disk and the first control disk. The driving systems can be formed in particular by spring-groove interventions or driving pins and recesses or arcuate slots, so that a free design of the starting and ending points of the pivot positions is made possible here.

Advantageously, a latching of the first unlocking system, d. H. the actuated by the first cable first unlocking lever can be achieved by the first control disk is guided in the adjustment between the intermediate position and the final operating position via a dead center and there by z. B. a stop is held (not shown); Thus, a first spring action of the first unlocking lever can be used to hold the first control disk in its actuated position. As a result, the entire actuator can be held in this position. This latching can by the second unlocking system, d. H. overcome the second release lever with the second cable, in particular by a second spring action of the second unlocking system.

By means of this system, which can be formed with relatively little expenditure on equipment, the two functions can be suitably separated in particular also for a seat lock. Thus, the user can solve by pivoting in the first intermediate position, the seat longitudinal locking or seat rail longitudinal locking and already longitudinally adjust the vehicle seat; through further actuation, the recliner lock or backrest lock is released, so that the backrest can be folded forward. In this folded-forward position advantageously no pulling action is exerted by the recliner lock or its second unlocking lever; the backrest locking device allows an open position without pulling action on the second cable, which in the backrest locking device z. B. can be achieved by sliding receiving a pivoted from a gear engagement lever. Thus, the first spring action, which is exerted by the seat longitudinal lock on the first cable to the first control disk, be used for self-retention; The vehicle seat can be adjusted without further actuation of the actuating lever in the longitudinal direction.

According to a particularly preferred embodiment of the actuating lever can swing back automatically in this fully actuated, self-holding position to its original position, so that it no longer interferes with the user or a passenger in a rear row of seats protruding. Since according to the invention, the coupling of the control discs by the second driving means between the control discs, the operating lever is functionally separated from the cables and z. B. spring-loaded - or fold back automatically due to its weight.

A return adjustment can then take place when the user folds the backrest back into its seating position, whereby an automatic engagement of the backrest locking device takes place, whereupon a pulling action takes place via the second cable, which - without the need for actuation of the operating lever - that from the two control discs formed pivotable system zurückverstellt to the starting position.

Advantageously, the actuating lever and the two control discs are mounted in a common axis, whereby a space-saving design is formed with low material cost and high security; There is a free configurability with a small footprint, in particular lower than in known lever systems with mutually offset pivot axes of the multiple levers.

According to an advantageous embodiment, not only time-shifted operations, but also different strokes of the cables can be realized by the cable connections of the cables in different radial distance from the axis 12 are connected.

The invention will be explained below with reference to the accompanying drawings to an embodiment. Show it:

1 a vehicle seat with a cable system and an actuating device according to an embodiment of the invention in successive steps of the adjustment;

2 the actuator according to the embodiment in initial position;

3 one step 1 the adjustment of the actuating device in an intermediate position for a first release;

4 one step 2 the adjustment in a fully actuated position of the unlocking lever for a complete unlocking; and

5 one step 3 with a zurückgeschwenkten position of the unlocking lever when latching the locking system in front-folded backrest.

A vehicle seat 1 has a seat part 2 and a backrest 3 on, on the seat part 2 pivotable and not shown here in more detail backrest locking device 4 locked tethered. The backrest 3 can z. B. tilted within a comfort range and after unlocking the backrest locking device 4 from the in 1 Partial image a) shown sitting position according to the sub-images b) and c) to z. B. 35 ° in a functional position, eg. As an easy-entry position, are folded forward. The entire vehicle seat 6 is on a bottom rail via a seat rail latch 6 locked and can be längsverstellt after unlocking them. The unlocking of the backrest locking device 4 and the seat rail lock 6 via an actuating device 5 that z. B. at the upper end of the backrest 3 is provided and can be operated by the user with one hand. The user can after the actuation of the actuator 5 with one hand the backrest 3 in accordance with the partial images b) and c) fold up and according to part of the picture c) the entire vehicle seat 1 slide forward on the bottom rail to achieve a full easy-entry position.

According to the diagrams d) and e), the return adjustment takes place by the user the vehicle seat 1 initially adjusted back in the longitudinal direction and subsequently or in partial overlap with the longitudinal adjustment of the backrest 3 folds back according to part of e), so that an automatic latching of the backrest locking device 4 in the sitting position, ie in accordance with the seating position and starting position of the partial image a). Thus, an adjustment of the vehicle seat 1 by the user with one hand and z. B. a step for longitudinal adjustment of the vehicle seat 1 , As well as a corresponding return adjustment for automatic locking possible. In the positions according to sub-pictures c) and d) of 1 . d , H. in the folded-forward functional position of the backrest 3 occurs a latching of the backrest locking device 4 on, so that the user the actuator 5 no longer has to operate.

The 2 to 5 show the respective positions and operations of the actuator 5 in these positions:
The actuating device 5 has an operating lever 8th , a first control disc 9 and a second control disc 10 on, with the operating lever 8th and the two control discs 9 and 10 in a common axis 12 at a leaning connection 14 pivotally hinged, in turn, fixed to the backrest 3 or as part of the backrest 3 is trained. At the first control disc 9 is a first cable pull 15 over a first rope connection 16 connected; is corresponding to the second control disk 10 a second cable 17 via a second cable connection 18 tethered. The first cable 15 actuates a first unlocking lever preloaded with a first spring action M1, preferably a rail unlocking activating lever 20 that is directly or indirectly on the seat rail latch 6 acting for the longitudinal adjustment. Thus, the rail unlocking activation lever 20 when operating z. B. activate a driving mechanism, so that the seat rail is unlocked during subsequent folding the backrest. Accordingly, the second cable operated 17 a biased by a second spring action M2 backrest unlocking lever 22 , The two release levers 20 and 22 are thus each in their initial position of 2 to be biased and by the cables 15 and 17 operated against the spring effects.

In the swiveling system from the control discs 9 and 10 and the operating lever 8th entrainment means are provided, namely first entrainment means or a first entrainment system 24 . 25 between the operating lever 8th and the first control disc 9 and second entrainment means or a second entrainment system 26 . 27 between the two control discs 9 and 10 :
At the operating lever 8th is a first takeaway 24 provided in the transverse direction, ie substantially parallel to the axis 12 protrudes and in a first recess 25 the first control disc 9 is guided; the first recess 25 can as shown for. B. be designed as a curved slot that z. B. in the transverse direction completely through the first control disk 9 extends. Furthermore, extends from the first control disk 9 a second take-over pin 26 to the second control disk 10 and lies in a second recess 27 the second control disk 10 , As in the starting position of 2 You can see the first takeaway pin 24 already in the starting position at the end of the first recess 25 , so when pivoting the operating lever 8th in 2 up directly the first control disk 9 is pressed; the second take-over pin 26 lies at the lower end of the second recess 27 on, so the second control disc 10 only after a free path or partial actuation of the operating lever 8th is pivoted.

The control discs 9 and 10 can in principle have different attachment cross-sections, ie, the rope connections 16 and 18 can be at different radial distance r16 and r18 with respect to the axis 12 be connected. Thus, not only time-shifted operations, but also different strokes of the cables 15 and 17 will be realized.

From the starting position 0 of the 2 starting from the operating lever 8th in one step 1 pivoted upwards into the - only temporary - intermediate position 1 of the 3 , The operating lever 8th thus drives over the first takeaway pin 24 the first control disc 9 and thus actuates the first cable 15 so that the rail unlocking activation lever 20 is adjusted against its first spring effect M1. In this first partial operation, the second takeaway pin runs 26 in the second recess 27 the second control disk 10 until the end of the second recess 27 , In 3 Advantageously, no latching is provided; the representation of the intermediate position I of the 3 Thus, only the explanation of the functionality takes place.

In this continuous pivoting movement of the actuating lever 8th about the temporary intermediate position I of the 3 in the fully actuated position II of the 4 , In 3 is the first cable connection 16 already in an upper position of the first control disk 9 just before top dead center; with adjustment in the 4 wanders the first rope connection 16 Thus, via the top dead center in an actuated position, which represents a "rear dead center position", wherein the spring action of the first unlocking lever 20 produces a stabilization or a latching, so that the first release lever 20 can not swing back to its original position. The "dead center position" of the 4 is hereby preferably held by a stop and thus stabilized by the spring action and the stop.

The second cable 17 will be in this second step of 3 to 4 now operated, so that the backrest release lever 22 is pivoted against its second spring action M2.

In 4 can the backrest 3 thus be folded forward in the easy-entry position; the user can use the operating lever 8th let go and the vehicle seat 1 as a whole back and forth in the longitudinal direction. This is done by manually folding the backrest 3 in their free-pivoting area, the backrest release lever 22 kept open and thus from the backrest release lever 22 no restoring torque over the second cable 17 on the second control disc 10 exercised, ie M2 = 0. It thus results in vorgeklappter backrest 3 the stable operating lever system of 4 ,

5 shows a subsequent step 3 who is in step 2 automatically connects; the backrest lock is still in the unlocked position with M2 = 0, so that no pulling action on the second cable 17 is exercised. The operating lever 8th can swing back down to its starting position, since the first takeaway pin 24 free in the first recess 25 the first control disc 9 can swing.

This return adjustment according to 5 can thus z. B. by the weight of the operating lever 8th , or even a small spring preload done. This step achieves a more pleasing visual appearance to the user because of an opened operating lever 8th in the easy-entry position of the backrest 3 , is perceived as unpleasant or disturbing when entering and exiting passengers and possibly also in the access to the rear protrudes.

Will now be followed by 5 starting in one step 4 the backrest according to drawing e) of 1 swung back to its original position, leaves the backrest locking device 4 their free-pivoting area and locked. The backrest release lever 22 thus pulls over the second cable 17 the second control disc 10 back, which via the second take-over pin 26 the first control disc 9 from its "dead center position" over the dead center swings forwards.

Here, the geometric design is according to 4 and 5 advantageous insofar as the second cable 17 exerts a greater torque than the counteracting first cable 15 : the self-holding torque of the first cable 15 is relatively small, since between the first cable 15 and the active lever, from the first rope connection 16 to the axis 12 runs, there is an acute angle. On the other hand, the second cable pull attacks 17 at the second rope connection 18 at a larger angle; also the spring effects M1 and M2 can be chosen appropriately.

After crossing top dead center, both cables pull 15 and 17 by the spring effects M1 and M2 their release lever 20 and 22 together, the swiveling control system actuating lever 8th and the control discs 9 and 10 down to the starting position of the 2 ,

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been 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.

Cited patent literature

• DE 102004052747 B3 [0005]
• DE 102005060483 A1 [0006]
• DE 102004015451 A1 [0007]

Claims (13)

Actuating device ( 5 ) for a vehicle seat ( 1 ), the actuating device ( 5 ) comprises: an actuating lever ( 8th ) for actuation by a user, a first pivotable control disk ( 9 ) and a second pivotable control disk ( 10 ), whereby the operating lever ( 8th ), the first control disc ( 9 ) and the second control disk ( 10 ) pivotable independently of each other and by entrainment means ( 24 . 25 . 26 . 27 ) can be coupled in their pivoting movements, one on the first control disk ( 9 ) attached first cable ( 10 ) and one on the second control disk ( 10 ) attached second cable ( 17 ), one through the first cable ( 15 ) pivotable first functional lever ( 20 ) and one through the second cable ( 17 ) pivotable second function lever ( 22 ), the actuating device ( 5 ) is adjustable between at least the following positions: a starting position ( 0 ) with the actuating lever ( 8th ), an intermediate position ( I ) with partially pivoted operating lever ( 8th ), pivoted first functional lever ( 20 ) and not pivoted second function lever ( 22 ), and a fully actuated position ( II ) with completely pivoted operating lever ( 8th ), pivoted first functional lever ( 20 ) and pivoted second function lever ( 22 ). Actuating device ( 5 ) according to claim 1, characterized in that the intermediate position ( I ) is provided only temporarily without latching and the operating lever ( 8th ) in the adjustment of the starting position ( 0 ) in the fully actuated position ( II ) through the intermediate position (i) is durchschwenkbar. Actuating device ( 5 ) according to claim 1 or 2, characterized in that first entrainment means ( 24 . 25 ) for pivoting the first control disk ( 9 ) by the operating lever ( 8th ) are provided for adjustment of the starting position in the intermediate position. Actuating device ( 5 ) according to claim 3, characterized in that as a first entrainment means on the operating lever ( 8th ) first takeaway pin ( 24 ) and one in the first control disc ( 9 ) formed first recess ( 25 ) for receiving the first takeaway pin ( 24 ) are formed, wherein the first recess ( 25 ) a return adjustment of the actuating lever ( 8th ) from the actuated position to the starting position. Actuating device ( 5 ) according to one of the preceding claims, characterized in that between the second control disk ( 10 ) and the first control disk ( 9 ) second entrainment means ( 26 . 27 ) are provided for coupling the pivoting movement of the two control discs ( 9 . 10 ) when adjusting from the intermediate position ( I ) in the fully actuated position ( II ), wherein the second entrainment means in the adjustment of the first control disk ( 9 ) from the starting position into the intermediate position ( I ) are inactive. Actuating device ( 5 ) according to claim 5, characterized in that as a second entrainment means ( 26 . 27 ) on the first control disk ( 9 ) second take-over pin ( 26 ) and one in the second control disk ( 10 ) formed second recess ( 27 ) for receiving the second takeaway pin ( 26 ) are provided. Actuating device ( 5 ) according to one of the preceding claims, characterized in that by the first functional lever ( 20 ) and the first cable ( 15 ) in the fully actuated position ( II ) a self-holding the actuator ( 5 ) is formed, wherein the biased by a first spring action (M1) first functional lever ( 20 ) over the first cable ( 15 ) the first control disk ( 9 ) in the fully actuated position ( II ) holds. Actuating device ( 5 ) according to claim 7, characterized in that in the self-holding, fully actuated position ( II ) by the second spring action (M2) biased second functional lever ( 22 ) and the second cable ( 17 ) a restoring moment on the second control disk ( 10 ) and the second driving means ( 26 . 27 ) on the first control disk ( 9 ) can be formed for the rearward adjustment of the first control disk ( 9 ) into the intermediate position ( I ) and / or the starting position ( 0 ). Actuating device ( 5 ) according to claim 7 or 8, characterized in that a first cable connection ( 16 ) of the first cable ( 15 ) on the first control disk ( 9 ) when pivoting from the intermediate position ( I ) in the fully actuated position ( II ) about a dead center of the pivot position of the first control disk ( 9 ) is guided and in the fully actuated position by the first spring action (M1) of the first functional lever ( 20 ) and the first cable ( 15 ) is held. Actuating device ( 5 ) according to one of the preceding claims, characterized in that the first functional lever ( 20 ) a rail unlocking activation lever ( 20 ) or rail release lever for direct or indirect unlocking of a seat rail locking device ( 6 ) and the second function lever a backrest release lever ( 22 ) for unlocking a backrest locking device ( 4 ) between a backrest ( 3 ) and a seat part ( 2 ). Actuating device ( 5 ) according to one of the preceding claims, characterized in that cable connections ( 16 . 18 ) of the cables ( 15 . 17 ) on the control discs ( 9 . 10 ) different radial distances (r16, r18) to a common axis ( 12 ) of the control disk ( 9 . 10 ) and strokes of the cables ( 15 . 17 ) upon actuation of the operating lever ( 8th ) are different. Vehicle seat ( 1 ) with a seat part ( 2 ), one opposite the seat part ( 2 ) swivel backrest ( 3 ), a backrest locking device ( 4 ) for releasably locking the backrest ( 3 ) on the seat part ( 2 ) and a seat rail locking device ( 6 ) for locking the vehicle seat ( 1 ) in at least one longitudinal position relative to a lower rail, and an actuating device ( 5 ) according to claim 9, by which the backrest locking device ( 4 ) and the seat rail locking device ( 6 ) are unlocked, wherein by pivoting the actuating lever ( 8th ) from the starting position into the intermediate position, the seat rail locking device ( 6 ) can be unlocked without unlocking the backrest locking device ( 4 ), and subsequently by pivoting the operating lever ( 8th ) from the intermediate position to the fully actuated position, the backrest locking device ( 4 ) is unlockable. Vehicle seat according to claim 12, characterized in that when the backrest is folded forward ( 3 ) the backrest locking device ( 4 ) no second spring action or tensile force on the second cable ( 17 ) exercises.

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