DE102007024341B3 - Vehicle seat, in particular motor vehicle seat - Google Patents

Abstract

at a vehicle seat (1), in particular a motor vehicle seat, with a seat structure (3), which for longitudinal adjustment of the vehicle seat (1) at least one during the longitudinal adjustment stationary first seat rail (4a) and at least one relative to this in the longitudinal direction slidable second seat rail (4b), and at least a buckle (11) attached to an adapter (17) between the two long sides the seat part structure (3) is arranged, wherein the vehicle seat (1) can be moved from a use position to a non-use position, for what Seat part structure (3) pivotally and the adapter (17) detachable with the vehicle structure is lockable, the adapter (17) with the first seat rail (4a) connected, and the buckle (11) remains while the longitudinal adjustment stationary.

Description

The The invention relates to a vehicle seat, in particular a motor vehicle seat, with the features of the preamble of claim 1.

In the DE 101 53 872 C1 a longitudinally adjustable vehicle seat of this type is described with a plurality of seats, in which a transversely disposed between the longitudinal sides buckle is mounted on an additional rail system to drive in the longitudinal adjustment loosely and in the event of a crash to provide a short way to initiate the belt forces in the vehicle structure. In order to pivot the seat part structure, the rail system is hinged at one end to the vehicle structure and at the other end by means of a lock releasably locked to the vehicle structure.

Of the Invention is based on the object, a vehicle seat of the beginning to improve the type mentioned. This object is achieved by a vehicle seat with the features of claim 1 solved. advantageous Embodiments are the subject of the dependent claims.

By doing the adapter is connected to the first seat rail and thus the Buckle during the longitudinal adjustment remains stationary, is a cost-effective solution for längseinstellbare vehicle seats with swivel seat structures available, which are the ones for the crash case necessary short ways for The force transmission offers and it is cost-effective for lack of complicated Rail system. Only the cooperating with the buckle The safety belt must have sufficient length in all through the longitudinal adjustment achievable seat long positions Offer.

Of the Vehicle seat can be pivoted by pivoting the seat part structure of a Use position be transferred to a non-use position. However, the adapter with the buckle must be able to pivot. Around in the use position the seat structure fixed adapter as possible connect directly or in a short way with the vehicle structure, is the adapter by means of a pawl or the like with detachable the vehicle structure lockable. In the event of a crash, the Pawl preferably no moment or a closing moment to the belt buckle over the Adapter introduced into the pawl forces the shortest route into the vehicle structure continue to lead. If, however, the latch when leaving the position of use and / or on return in the use position preferably experiences an opening moment, d. H. the pawl opens force-controlled, no special unlocking needs to be provided.

The different reaction of the pawl is preferably by different Effect lines and a special texture of contours of Jack and their arrangement is achieved relative to the lines of action. Improvements in the event of a crash, for example, result from targeted Deformations, for example, the adapter carrying the cross member. A additional Securing the pawl can be achieved by a stop, the first in the event of a crash is effective by means of pawl and Adapter.

in the The following is the invention with reference to an illustrated in the drawing Embodiment explained in more detail. It demonstrate

1 a partially sectioned side view of the embodiment in a position of use,

2 a perspective view of the embodiment in the position of use,

3 a partial view of the embodiment in the position of use,

4 a 3 corresponding partial view when leaving the position of use or when returning to the same, wherein the latch opens,

5 a 3 corresponding partial view when leaving the position of use or when returning to the same, wherein the pawl leaves the bolt or comes into contact with the same,

6 a 3 corresponding partial view when leaving the position of use or when returning to the same, wherein the pawl moves away from the bolt or approaches it,

7 a partial view of the embodiment in the position of use in the event of a crash,

8th a side view of the adapter,

9 a side view of the latch,

10 a front view of the latch, and

11 a side view of the rear foot including lock.

A vehicle seat 1 is designed for a middle or rear row of seats of a motor vehicle. The orientation of the vehicle seat 1 Within the motor vehicle and its usual direction of travel define the directional information used below, namely the longitudinal direction in the direction of travel, the perpendicular and horizontal transverse direction and the vertical. The vehicle seat 1 is here transversely divided into a 2/3-part (or 60%) and a 1/3-part (or 40%), but may also extend undivided over the entire width.

The vehicle seat 1 includes a seat part structure 3 which each have a first seat rail on both sides 4a and a second seat rail 4b has, in a conventional manner with C-shaped profiles mutually engage around and relative to each other in the longitudinal direction displaceable and locked together. The seat rails 4a and 4b are each accessible from the side for their attachment. The seat part structure 3 is on in the longitudinal direction front end of the first seat rails 4a by means of a respective front pivot bearing 5 hinged to the vehicle structure of the motor vehicle. At the longitudinal rear end of the first seat rails 4a is each a back foot 6 each with a lock 7 attached. The seat part structure 3 is by means of locks 7 releasably lockable with the vehicle structure.

By means of the seat rails 4a and 4b is the vehicle seat 1 longitudinally adjustable, ie there are different seat longitudinal positions of the vehicle seat 1 adjustable, which each define a suitable for sitting use position of use. When longitudinal adjustment remain the first seat rails 4a including front pivot bearings 5 and back feet 6 unmoved, while the second seat rails 4b including parts of the seat structure mounted thereon 3 move relative to it.

Starting from one of the use positions is the seat part structure 3 after unlocking the locks 7 on both sides of the seat part structure 3 around the front pivot 5 defined horizontal pivot axis pivoting upward in a non-use position, in this case a package order. The seat part structure 3 carries in a conventional manner a seat cushion. The seat part structure 3 extends in the transverse direction present only on the 2/3 part, but can also over the entire width of the vehicle seat 1 extend.

The vehicle seat 1 also includes a backrest 8th , which by means of fittings 9 attached to the seat part structure and is pivotable relative thereto. Starting from the position of use is the backrest 8th after unlocking the fittings 9 around by the fittings 9 defined horizontal pivot axis forward on the seat part structure 3 pivotable, which initiates the transition to the package or another position of non-use, namely defines a table position. The rest 8th is padded in a conventional manner. Also the backrest 8th extends in the transverse direction present only on the 2/3 part, but can also over the entire width of the vehicle seat 1 extend.

The vehicle seat 1 has three seats, the seat part structure 3 two of them are assigned. Due to the pivoting of the seat part structure 3 need the buckles 11 on the seat part structure 3 be attached. The term "buckle" is intended to refer to the entire assembly including whips and fasteners or the like. Since not all belt locks 11 on the longitudinal sides, ie the legs extending in the longitudinal direction, of the presently frame-shaped seat part structure 3 can be attached, is for at least one of the belt buckles 11 which is between the two longitudinal sides of the seat part structure 3 is arranged, a special attachment to the seat part structure 3 provided. For this purpose, the seat part structure 3 in the region of its rear end a transversely extending cross member 15 on, which frontally on the rear feet 6 is attached. On the present tubular cross member 15 sits - in the present case approximately in the middle - an adapter 17 , which firmly with the cross member 15 connected is. On seat part structure fixed adapter 17 is - in front of the cross member 17 located area - the buckle 11 appropriate.

Further, on the adapter 17 - in one behind the cross member 17 located area - a latch 21 hinged, relative to the adapter 17 pivotable and biased in its closing direction. In 3 the closing direction runs clockwise. In the use position is the latch 21 with a vehicle-structural bolt 23 locked, ie a bolt firmly connected to the vehicle structure 23 , The bolt 23 is aligned in the transverse direction. It can also be a section of a stirrup or the like. The handle 21 encloses the bolt 23 with a hook mouth, in the following as inner contour 21a designated. At the latch 21 is a stop 21b provided, in this case formed. The stop 21b in this case is perpendicular to the pivoting plane of the pawl 21 from, ie to the adapter 17 out.

During the longitudinal adjustment of the vehicle seat 1 remains the buckle 11 due to the attachment to the first seat rails 4a stationary. Accordingly, the one with the buckle 11 cooperating safety belt 25 formed with such a length that it is effective in all seat longitudinal positions.

With the beginning of the transition from the use position in the package order, the seat part structure begins 3 to move up at the back end. The inner contour 21a is designed and oriented so that the movement upwards (ie in the vertical upward) an opening moment on the latch 21 brings, so this in the further movement of the seat part structure 3 pivots in the opening direction, the bolt 23 releases and dissolves from this. After leaving the bolt 23 pivots the latch 21 due to their bias again in their closing direction. The stop 21b at the latch 21 limits the swing angle of the pawl 21 by attachment to the adapter 17 , in this case to one on the adapter 17 molded nose 17b that radially with respect to the pivot axis of the pawl 21 protrudes radially.

The handle 21 has an outer contour 21c on. When returning from the package position to the use position when the seat part structure 3 Towards the end of this movement, downwards (ie downwards in the vertical direction), this outer contour comes 21c in contact with the bolt 23 , The outer contour 21c is designed and aligned so that due to the attachment to the bolt 23 and the movement down an opening moment on the latch 21 arises, so the latch 21 in the further movement of the seat part structure 3 pivots in the opening direction, the bolt 23 can engage behind and due to their bias again pivots in their closing direction, causing them with the bolt 23 locked. When leaving the position of use and when returning to the same so have the lines of action of the pawl 21 acting forces in the vertical up or down.

If the vehicle seat 1 is occupied by an occupant, in the event of a crash on the occupant forces acting on the seat belt 25 in the buckle 11 and further into the adapter 17 initiated. In the case of a frontal crash, the line of action of the resulting force points to the pawl 21 , ie the belt force, obliquely up front. The inner contour 21a is designed and initially aligned so that the belt force no opening moment on the latch 21 but rather a closing moment. The crash forces deform from a certain amount the cross member 15 plastically, if necessary also the adapter 17 , By this deformation, the distance of the cross member 15 (And optionally the pivot point of the pawl 21 on the adapter 17 ) to the bolt 23 slightly enlarged. Should the latch 21 As a result of these geometry changes, the stop will come up 21b - This time in the opening direction - in contact with the adapter 17 to further open the latch 21 to prevent.

1

vehicle seat

3

Seat part structure

4a

first seat rail

4b

second seat rail

5

front pivot bearing

6

rear foot

7

lock

8th

rest

9

fitting

11

buckle

15

crossbeam

17

adapter

17a

nose

21

pawl

21a

inner contour

21b

attack

21c

outer contour

23

bolt

25

safety belt

Claims (14)

Vehicle seat, in particular motor vehicle seat, with a seat structure ( 3 ), which on its two longitudinal sides for longitudinal adjustment of the vehicle seat ( 1 ) a fixed during the longitudinal adjustment first seat rail ( 4a ) and a relative to this longitudinally displaceable second seat rail ( 4b ), and with at least one buckle ( 11 ) connected to an adapter ( 17 ) and transversely between the two longitudinal sides of the seat part structure ( 3 ), wherein the vehicle seat ( 1 ) can be transferred from a use position to a non-use position, for which the seat part structure ( 3 ) and the adapter ( 17 ) releasably lockable with the vehicle structure , characterized in that the adapter ( 17 ) with the first seat rail ( 4a ) and the buckle ( 11 ) remains stationary during the longitudinal adjustment. Vehicle seat according to claim 1, characterized in that the adapter ( 17 ) by means of a pawl ( 21 ) releasably lockable with the vehicle structure. Vehicle seat according to claim 2, characterized in that the pawl ( 21 ) when leaving the use position to the non-use position and / or on the return from the non-use position to the use position, an opening moment and in the use position in the event of a crash no or a closing moment learns. Vehicle seat according to claim 2 or 3, characterized in that when leaving the use position for non-use position and upon return from the non-use position into the position of use, the lines of action of the pawl ( 21 ) have vertical force pointing upwards or downwards. Vehicle seat according to one of claims 2 to 4, characterized in that in the event of a crash, the line of action of the on the pawl ( 21 ) acting force obliquely upwards. Vehicle seat according to one of claims 2 to 5, characterized in that the pawl ( 21 ) on the adapter ( 17 ) is articulated and in the use Stel with a vehicle-structural bolt ( 23 ). Vehicle seat according to claim 6, characterized in that the pawl ( 21 ) an inner contour ( 21a ), which in the position of use the bolt ( 23 ) and when the transition into the non-use position opens and the bolt ( 23 ) releases. Vehicle seat according to claim 6 or 7, characterized in that the pawl ( 21 ) an outer contour ( 21c ), which upon return to the position of use in abutment with the bolt ( 23 ) and the latch ( 21 ) opens. Vehicle seat according to one of claims 2 to 8, characterized in that the pawl ( 21 ) a stop ( 21b ), which in the closing direction and / or opening direction, the pivot angle of the biased pawl ( 21 ) relative to the adapter ( 17 ) limited. Vehicle seat according to claim 9, characterized in that the stop ( 21b ) the swivel angle of the prestressed pawl ( 21 ) relative to the adapter ( 17 ) by attachment to the adapter ( 17 ) limited. Vehicle seat according to one of the preceding claims, characterized in that the seat part structure ( 3 ) a cross member ( 15 ), with which the adapter ( 17 ) and with which the first seat rail ( 4a ) and / or a rear foot ( 6 ) on the first seat rail ( 4a ) is firmly connected. Vehicle seat according to claim 11, characterized in that the cross member ( 15 ) and / or the adapter ( 17 ) plastically deformed in the event of a crash. Vehicle seat according to claim 2 and 12, characterized in that the pawl ( 21 ) due to the deformation of the cross member ( 15 ) and / or the adapter ( 17 ) in contact with the adapter ( 17 ), whereby an opening of the pawl ( 21 ) is prevented. Vehicle seat according to claim 13, characterized in that the pawl ( 21 ) due to the deformation of the cross member ( 15 ) and / or the adapter ( 17 ) by means of a stop ( 21b ) in contact with the adapter ( 17 ) comes.