DE102010022005A1 - Vehicle seat for motor vehicle e.g. passenger car, has lower seat structure guided in rail arrangement in longitudinally adjustable manner and lockable at rail arrangement by rail locking device - Google Patents

Abstract

The seat has a lower seat structure (12) guided in a rail arrangement (14) in a longitudinally adjustable manner. A backrest (18) is pivotable relative to a seat cushion part (10). An access device (22) includes a rail locking device (30) to simplify entry into a motor vehicle and exit from the vehicle. The seat structure is lockable at the rail arrangement by the locking device. A rail interlock (32) is provided to the locking device and operable by a key (25) or remote actuating element (24).

Description

The The invention relates to a vehicle seat for a motor vehicle in the preamble of the patent claim 1 specified type.

Out The series production of passenger cars are already such Vehicle seats with a seat cushion supporting a seat cushion part as known, which longitudinally displaceable in a rail assembly guided is. About that In addition, the vehicle seat comprises a backrest, which relative to the seat cushion part from a sitting position in an evasive position is pivotable forward. Furthermore, such vehicle seats usually an access device for simplified entry and exit of the Motor vehicle (Easy Entry) on which usually a rail lock is assigned, with which the seat base to the rail assembly is lockable.

such Access devices (Easy Entry) usually work in such a way that the backrest for climbing or leaving behind the vehicle seat arranged Row of seats is pivoted forward, after which the rail lock solved becomes. The entire vehicle seat with the backrest displaced to the front is thus after solving the rail lock usually power-operated by a certain distance Move forward to allow a person to get in and out of the motor vehicle is facilitated. Following this process can then the seat base or vehicle seat back to the rear pushed back and the backrest swung back into its use position become. These mechanically described systems may also partially or completely be powered by power.

One Problem of recent vehicle seats, for example, to rail assemblies arranged inside vehicles in the form of vans or vans it is that after pressing the access device forward along the rail assembly moving seat substructures or vehicle seats in an undefined stop moving forward. Namely in rail arrangements of floor rails, which correspond only to one each Vehicle seat serve, the front side respective stops for definition provided this forward displaced end position of the vehicle seat can be This is at floor rails, which, for example, in the interior of Cars like vans or vans run, not possible. This especially due to the fact that continuous floor rails over several Vehicle seat rows are used away. A defined position of the vehicle seat in the for entry and exit (Easy Entry) relocated Position of the vehicle seat or the seat base is desirable.

It is therefore an object of the present invention, a vehicle seat of the type mentioned above, by means of which a defined Position of the entry and exit (Easy Entry) moved forward Vehicle seat is given.

These The object is achieved by a Vehicle seat solved with the features of claim 1. advantageous Embodiments with appropriate and non-trivial developments of the invention are specified in the remaining claims.

Around to provide a vehicle seat of the type mentioned by means which a defined position of the seat or the seat base can be produced relative to the rail arrangement of the floor rails, It is inventively provided that additionally for rail lock a rail lock is provided by means of which the seat substructure can be locked to the rail arrangement is. This additional Rail locking serves primarily to, after pressing the access device (Easy Entry) for easy entry and exit of the motor vehicle a corresponding lock in the forward adjusted position of the vehicle seat or the seat base at the corresponding Ensure rail arrangement of the floor rails. Thus, at the vehicle seat which has been moved forward for easy entry and exit a defined or fixed position relative to the rail assembly adjustable so that the vehicle seat does not continue along the rail assembly can be moved. Such is a path limitation, for example to create a rail assembly, the bottom rails, for example, via a considerable length range extend the interior of the motor vehicle. As cars are here for example Vans or transporter called. Another The advantage is that such a vehicle seat for getting on and off not too much can be moved forward. In addition, the rail lock brings positive safety aspects. Despite moved to the front Vehicle seat is thus a reliable lock on the rail assembly created when, for example, the car is moved without before the vehicle seat is returned to its correct seating position becomes.

Further Advantages, features and details of the invention will become apparent the following description of a preferred embodiment as well as from the drawings; the drawings show in:

1 in each case a schematic and lateral schematic representations of a vehicle seat for a motor vehicle with a seat cushion part supporting seat, which is guided longitudinally displaceable in a rail assembly and with a backrest which is pivotable relative to the seat cushion part, wherein an access device (Easy Entry) for simplified on and Exiting the motor vehicle in addition to a rail locking a Schienenarretierung, by means of which the seat base in a starting from a top in 1 illustrated starting position can be locked in a forwardly adjusted position on the rail assembly;

2 a schematic front view and a schematic perspective view of a possible embodiment of the rail lock by means of a seat-mounted latch, which is lockable in one of several provided for this purpose pawl openings of a bottom rail rail assembly;

3 a plan view and a perspective view of the rail assembly in a zu 2 alternative embodiment, wherein in turn a seat-tight pawl is provided, which engages in one of several provided for this purpose pawl openings on the side of the corresponding bottom rails of the rail assembly, wherein present the pawl in contrast to the embodiment according to 2 has a pivot axis extending in the vehicle vertical direction; and in

4 a schematic side view and a schematic perspective view of the rail lock according to a further embodiment, in which seated a wiederbelastete brake shoe is provided, with which a roll on the corresponding bottom rail of the rail assembly rolling element can be locked.

In 1 is shown in a respective side view of a vehicle seat for a motor vehicle, for example in the form of a van or a van. This vehicle seat initially comprises a seat cushion part 10 carrying seat substructure 12 , which in turn in a rail arrangement 14 with present two, in the vehicle longitudinal direction and parallel to each other floor rails 16 is guided longitudinally displaceable.

Furthermore, the vehicle seat comprises a backrest 18 which have respective backrest fittings 20 pivotable and locked in the manner described in more detail on the seat cushion part 10 is stored. An optional headrest of the backrest 18 is in 1 not shown.

Behind the vehicle seat, a further row of vehicle seats is arranged in the present case, which is accessible in a simplified manner in that the in 1 shown above vehicle seat from a use position in a in 1 shown below, forward moving position can be brought. This is done by controlling an access device 22 the vehicle seat, which by a remote control element 24 can be actuated in the further manner described in more detail. Such a system of an access device for simplified entry and exit of the motor vehicle is generally referred to as a so-called easy entry system.

By pressing the remote confirmation element 24 in the direction of the arrow 26 forward are first via a control line 28 the respective backrest fittings 20 to open, leaving the backrest 18 can be pivoted forward. In the present case, this must be the remote confirmation element 24 pulled, wherein pulling on the remote control element 24 at the same time the backrest 18 can be pivoted forward in the 1 position shown below.

Simultaneously with the operation of the remote control element 24 in the direction of the arrow 26 and the pivoting of the backrest 18 is via the control line 28 , For example, a traction means, a rail lock 30 the access device 22 opened or unlocked, which in turn in the rear of the seat base 12 is arranged and this - depending on the operation - on the floor rails 16 the rail arrangement 14 sets. The rail lock 30 is thus opened by the Lehnenbewegung lever controlled. At this point it should be noted that the control line 28 also for opening the backrest fittings 20 after pressing the remote control element 24 in the direction of the arrow 26 serves.

Furthermore, the access device comprises 22 a rail lock 32 , which at a front of the seat substructure 12 is arranged and this at the bottom rails 16 the rail arrangement 14 locked in the manner described in more detail below. This rail lock 32 is with the seat back pivoted forward 18 and already unlocked rail lock 30 initially still closed, causing the seat substructure 12 or the vehicle seat on the rail assembly 14 is locked.

By now an integrated button 25 the remote confirmation element 24 in the direction of the arrow 34 is pressed, now the rail lock 32 under the mediation of a control line 29 be opened or unlocked, causing the seat substructure 12 or the vehicle seat in total from in the 1 shown below according to the arrow 36 can be moved forward. In the present case this must be done while holding down the button 25 or in still drawn remote control element 24 respectively.

At this point it should be noted that the button 25 not compelling in the trained as a lever Fernbestätigungselement 24 must be integrated; rather, the button can 25 also remote from the remote acknowledgment element 24 be arranged.

After the vehicle seat or seat substructure 12 has been adjusted to a desired position to the front, in which a comfortable getting on or off the motor vehicle is possible, the button 25 the remote confirmation element 24 Let go through the rail lock 32 in the desired forwarded position, the seat base of the rail assembly 14 locked.

Following this, the remote confirmation element can now 24 even let go, creating a locking in the area of the backrest fittings 20 takes place, reducing the backrest 18 securely held in the forward displaced position. The movement sequence for advancing the vehicle seat - controlled by the access device 22 with the inside lock 30 and the rail lock 32 - is now complete.

If the vehicle seat in the reverse case from the advanced or advanced position back to its position of use as shown in 1 to be moved above, so must first the key 25 the front actuating element 24 be pressed. This in turn allows the Schienenarretierung 32 to open. With pressed button 25 so then the seat substructure 12 with the seat cushion part 10 and the backrests 18 , which is still pivoted forward, are pushed back. After the seat substructure 12 has reached its starting position, the button can 25 to be let go; This will cause the rail lock 32 locked and the seat base 12 is in the in 1 locked position shown above.

To now the backrest 18 , which about the backrest fittings 20 locked relative to the seat cushion part 10 is arranged in their in 1 shown use position by the Fernbestätigungselement 24 according to the arrow 38 - So in the opposite direction as when Vorschwenken according to the arrow 26 - be operated. As a result, the lock opens in the area of the backrest fittings 20 , whereby while still operated remote control element 24 in the direction of the arrow 36 the backrest on the pulled remote control element 24 can be pivoted to the rear. Following the back pivoting of the backrest 18 results over the control line 28 a locking of the rail lock 30 ; the rail lock 32 remains closed. The return movement of the vehicle seat into the use position is now completed by the fact that the remote control element 24 Let go after the backrest 18 has reached its final position. As a result, the lock in the area of the backrest fittings 20 between the backrest 18 and the seat cushion part 10 locked.

Overall, it is thus apparent that by means of rail locking 32 a possibility is created, the vehicle seat especially in the forward moving position, in which a simplified entry and exit of the motor vehicle is given (Easy Entry) on the rail assembly 14 is to fix. This allows a simple way a travel limit of the movement of the seat base 12 or the vehicle seat in total to the front, which contributes to the increase in comfort in the operation. This system is particularly suitable for continuous long floor rails 16 in which no rail-side stop can be provided.

In the 2 to 4 Now possible embodiments of the rail lock 32 exemplified.

So shows 2 a schematic front view and a schematic fragmentary perspective view of a rail lock 32 according to a first embodiment, wherein a pawl 40 , the seat firmly on the seat substructure 12 is stored, with one of a plurality of pawl openings 42 is engageable, which along a corresponding leg 44 the corresponding bottom rails extend in series. The handle 40 is doing by a spring element 46 kraftbeaufschlagt, which in turn on a fixed to the seat base 12 arranged spring stop 48 is supported. The latch is actuated 40 in the manner described by means of the corresponding control line 29 , In addition, the latch 40 mounted about an axis, which in the extension direction of the bottom rail 16 , So in the present case in the vehicle longitudinal direction (x-direction) extends.

3 shows an alternative embodiment of the Schienenarretierung in a partial and schematic plan view and a partial perspective view. Because the mode of action of the rail lock 32 essentially according to 2 is similar, should be used in the following functionally identical components with the same reference numerals. Again recognizable is the latch 40 , which in each latch openings 42 inside the thigh 44 the corresponding floor rail 16 can intervene. Next to the latch 40 is like derum the spring stop 48 seated on the seat base 12 arranged, again between the spring stop 48 and the latch 40 the spring element 46 is provided. The essential difference of the embodiments according to the 2 and 3 is that the pawl 40 is mounted on a pivot axis which extends substantially in the vehicle vertical direction (z-direction).

Finally shows 4 a further embodiment of the rail lock 32 , In a schematic and partial side view and a schematic and partial perspective view of one of the bottom rails 16 shows on which a rolling element 50 the rail lock 32 rolls. This rolling element 50 is together with a brake shoe 52 seated on the seat base 12 arranged. The brake shoe 52 is in the present case by a spring element 54 spring-loaded or via a clamping system against the rolling element 50 printable. Like a tire brake of a front wheel of a bicycle is in the present case by loosening or pressing the brake shoe 52 a blockage of the rolling element 50 achieved so that this is not on the corresponding bottom rail 16 can roll. This will fix the rail lock 32 reached. In the sense of the present frictional engagement between the rolling element 50 and the bottom rail 16 In addition, a positive coupling would be possible, for example, in which the rolling element 50 and the bottom rail 16 include respective tooth segments.

Claims (5)

Vehicle seat for a motor vehicle, with a seat cushion part ( 10 ) supporting seat substructure ( 12 ), which in a rail arrangement ( 14 ) is guided longitudinally displaceable, and with a backrest ( 18 ), which relative to the seat cushion part ( 10 ) is pivotable, wherein an access device ( 22 ) for easier entry and exit of the motor vehicle, a rail lock ( 30 ), by means of which the seat substructure ( 12 ) on the rail arrangement ( 14 ) is lockable, characterized in that in addition to the rail lock ( 30 ) a rail lock ( 32 ) is provided, by means of which the seat substructure ( 12 ) on the rail arrangement ( 14 ) is lockable. Vehicle seat according to claim 1, characterized in that the rail lock ( 32 ) by means of a button ( 25 ) or the like. Remote control element ( 24 ) is operable. Vehicle seat according to claim 2, characterized in that the button ( 25 ) or the like. Fernbetätigungselement der Schienenarretierung ( 32 ) in the remote control element ( 24 ) of the rail lock ( 30 ) is integrated. Vehicle seat according to claim 3, characterized in that the remote control element ( 24 ) for actuating the rail lock ( 30 ) is operable in different positions. Vehicle seat according to one of claims 2 to 4, characterized in that the rail lock ( 32 ) when the button is pressed ( 25 ) or remote control element ( 24 ) is unlocked.

Images