KR20100017088A - Vehicle seat, particularly motor vehicle seat - Google Patents

Abstract

The invention relates to a vehicle seat (1), particularly a motor vehicle seat, having a seat structure (3) comprising at least one seat rail (4a) for longitudinally adjust the vehicle seat (1), said rail remaining stationary during longitudinal adjustment, and at least one second seat rail (4b) displaceable in the longitudinal direction relative to said rail, and at least one belt buckle (11) mounted on an adapter (17) and disposed between the two longitudinal sides of the seat part structure (3), the vehicle seat (1) being movable from a used position into a non-used position, to which end the seat part structure (3) is pivotable and the adapter (17) may be locked in a releasable fashion to the vehicle structure, the adapter (17) being connected to the first seat rail (4a) and the belt buckle (11) remaining stationary during longitudinal adjustment.

Description

Vehicle seats, especially car seats {VEHICLE SEAT, PARTICULARLY MOTOR VEHICLE SEAT}

The present invention relates to a vehicle seat, in particular an automobile seat, having the features of the preamble of claim 1.

DE 101 53 872 C1 describes a longitudinally adjustable vehicle seat of this type with a plurality of sitting places, in which the belt buckle, which is arranged transversely between the longitudinal sides, It is attached to an additional rail system to provide a short path for the belt force to move loosely during orientation and to be introduced into the vehicle structure in the event of a crash. In order to be able to pivot the seat structure, the rail system is coupled to the vehicle structure at one end and releasably locked to the vehicle structure by a lock at the other end.

The present invention is based on the object of improving such a vehicle seat mentioned earlier. This object is achieved by a vehicle seat having the features of claim 1 according to the invention. Advantageous details are the subject matter of the dependent claims.

A belt buckle disposed transversely between the two longitudinal sides of the seat structure is attached to the adapter. A cost-effective method for a longitudinally adjustable vehicle seat with a pivotable seat structure is provided by an adapter connected to the first rail seat, so that the belt buckle remains stationary during longitudinal adjustment and the method crashes It is cost-effective because it provides a short path that delivers more force in the event of a dead end, and there is no complicated rail system. All that is required for the seat belt to interact with the belt buckle is to provide sufficient length in all longitudinal positions of the seat which can be reached by longitudinal adjustment.

The vehicle seat can be moved by the pivot of the seat structure from the use position to the non use position. However, the adapter must be able to pivot simultaneously with the belt buckle. In the use position, the adapter can be releasably locked to the vehicle structure by a latch or the like, in order to connect the adapter mounted on the seat structure to the vehicle structure as directly as possible or over short intervals. In the event of a crash the latch preferably receives no moment or receives a closing moment and transmits the force introduced into the latch through the adapter by the belt buckle over the shortest interval to the vehicle structure. In contrast, when starting from the use position and / or back to the use position, if the latch preferably receives an opening moment, ie if the latch is opened under control by force, no special unlocking means need to be pivoted.

Different reactions of the latch are preferably effected by the particular structure of the shape of the latch and by the arrangement of said shape relative to the different application lines and application lines. Improvements in collision events lead to, for example, specific deformation of the cross member supporting the adapter, for example. The latch can be further secured by a stop that is only effective in the event of a collision by bringing the latch into contact with the adapter.

The invention is explained in more detail below with reference to the exemplary embodiments shown in the drawings.

1 shows a side view, shown in partially cut form, of an exemplary embodiment in a use position;

2 shows a perspective view of an exemplary embodiment in a use position,

3 shows a partial view of an exemplary embodiment in a use position,

4 shows a partial view corresponding to FIG. 3 with the latch open when starting from or returning to the use position;

FIG. 5 shows a partial view corresponding to FIG. 3 with the latch leaving the bolt or coming into contact with the bolt when starting from or returning to the use position;

FIG. 6 shows a partial view corresponding to FIG. 3 with the latch removed from or approaching the bolt when starting from or returning to the use position;

7 shows a partial view of an exemplary embodiment in use position during a crash event,

8 shows a side view of the adapter,

9 shows a side view of the latch,

10 shows a front view of the latch,

11 shows a side view of the rear foot with a lock.

The vehicle seat 1 is designed for a seat in the middle or rear row in a motor vehicle. The orientation of the vehicle seat 1 in a motor vehicle and its usual direction of movement are used in the directional details used below, ie the longitudinal direction running in the direction of movement, the transverse direction running horizontally and vertically, and the vertical direction. Define the direction. In the case of the present invention, the vehicle seat 1 is divided into two-thirds (or 60%) and one-thirds (or 40%) in the transverse direction, but may extend without being divided over the entire width.

The vehicle seat 1 comprises a seat portion structure 3, the seat portion structure 3 having respective first seat rails 4a and second seat rails on both sides (ie both longitudinal sides). 4b), the first and second seat rails engage around each other in a manner known essentially as a C-shaped profile, displaceable relative to one another in the longitudinal direction and can be locked relative to one another. The seat rails 4a and 4b are respectively accessible from the sides for their fixing. At the front end of the first seat rail 4a in the longitudinal direction, the seat portion structure 3 is coupled to the structure of the motor vehicle by each front rotating bearing 5. Each trailing portion 6 is fixed by a respective locking device 7 at the rear end of the first seat rail 4a in the longitudinal direction. The seat structure 3 can be releasably locked to the vehicle structure by the locking device 7.

The vehicle seat 1 can be adjusted longitudinally by the seat rails 4a, 4b, ie different longitudinal positions of the vehicle seat 1 can be set, the longitudinal positions of which are essentially each of the seats. Define each suitable location for use. During longitudinal adjustment, the first seat rail 4a remains stationary with the forward rotating bearing 5 and the rear end 6 while the second seat rail 4b is seated structure 3 mounted thereon. Move against each other with some of the).

Starting from one of the positions of use, after the locking device 7 on both sides of the seat structure 3 is unlocked, the seat structure 3 is centered on a horizontal pivot axis defined by the forward rotating bearing 5. In this case, it can be pivoted upward from the package position in the case of the present invention to the unused position. The seat structure 3 supports the seat cushion in an essentially known manner. In the case of the present invention, the seat structure 3 extends only over two thirds in the transverse direction, but may extend over the entire width of the vehicle seat 1.

The vehicle seat 1 further comprises a backrest 8, which is attached to the seat structure by the fitting 9 and can be pivoted with respect to the seat structure. Starting from the position of use, after the accessory 9 is unlocked, the backrest 8 can be pivoted forward, about the horizontal pivot axis defined by the accessory 9 on the seat structure 3, The backrest begins to move to the package position or forms an unused position, ie a table position. The backrest 8 is upholstered in an essentially known manner. In the case of the present invention, the backrest 8 also extends only over two-thirds in the transverse direction, but can also extend over the entire width of the vehicle seat 1.

The vehicle seat 1 has three seats, two of which are assigned to the seat structure 3. Due to the pivotability of the seat structure 3, the belt buckle 11 must be fixed to the seat structure 3. The term "belt buckle" is intended to refer to the entire subassembly, including whip-like elements, fastening members, and the like. Since the whole of the belt buckle 11 is not fixed to the longitudinal side of the seat portion structure 3, ie the longitudinally extending limbs, in the case of the present invention in the form of a frame, the seat portion structure 3. A special fastening to the seat structure 3 must be provided for at least one of the belt buckles 11 arranged between the two longitudinal sides of the. For this purpose, the seat structure 3 has a cross member 15 in the region of its rear end, which cross member runs in the transverse direction and is fixed to the rear part 6 on the end side. The adapter 17 is placed on the cross member 15 which is tubular in the case of the present invention-approximately centered in the case of the present invention, which is fixedly connected to the cross member 15. The belt buckle 11 is attached to the adapter 17 mounted on the seat structure-in the region disposed upstream of the cross member 15.

In addition, the latch 21 is coupled to the adapter 17-in the region arranged downstream of the cross member 15-which latch is pivotable with respect to the adapter 17 and is prestressed in the closed position. In FIG. 3, the closing direction continues clockwise. The latch 21 is locked in use position by a bolt 23 mounted on the vehicle structure, ie a bolt 23 fixedly connected to the vehicle structure. The bolt 23 is oriented in the transverse direction. The bolt may be a cross section such as a clip. The latch 21 surrounds the bolt 23 by a hook mouth, referred to below as an internal feature 21a. The stopper 21b is provided on the latch 21 and is integrally formed on the latch in the case of the present invention. In the case of the invention, the stopper 21b projects perpendicularly to the pivoting plane of the latch 21, ie towards the adapter 17.

During longitudinal adjustment of the vehicle seat 1, the belt buckle 11 remains stationary due to the fastening to the first seat rail 4a. The seat belt 25 interacting with the belt buckle 11 is correspondingly designed to have a valid length in all longitudinal positions of the seat.

At the start of the movement from the use position to the package position, the seat structure 3 starts to move upward from the rear end. The internal features 21a are characterized in that the movement to the top (i.e. the vertical top) exerts an opening moment on the latch 21 so that the latch 21 pivots in the opening direction upon further movement of the seat structure 3 and bolts. It is structured and oriented so as to release (23) and to separate it from the bolt. After leaving the bolt 23, the prestress of the latch 21 pivots the latch back in its closing direction. The stopper 21b on the latch 21 is formed integrally on the adapter 17 by the pivot angle of the latch 21 in contact with the adapter 17, in the present case, and the pivot of the latch 21. Constraints using lugs 17b that project radially about the axis.

The latch 21 has an outer shape 21c. Returning from the package position to the use position, when the seat portion structure 3 pivots downward (ie vertically downward) towards the end of the movement, the outer shape 21c is brought into contact with the bolt 23. do. The outer shape 21c receives the opening moment by the latch 21 due to the contact with the bolt 23 and the movement downward, so that the latch 21 pivots in the opening direction when the seat structure 3 is further moved. And pivoted back in the closing direction due to pre-stressing and consequently being locked by the bolts 23 so that they can engage with the bolts 23. When starting from the use position and back to the use position, the lines of application of the force acting on the latch 21 are thus directed vertically upwards or downwards.

When the vehicle seat 1 is occupied by an occupant, the force acting on the occupant in the event of a crash is introduced through the seat belt 25 to the belt buckle 11 and onto the adapter 17. In the event of a frontal impact, the line of application of the synthetic force, ie the belt force, on the latch 21 is obliquely directed upward and forward. The inner feature 21a is initially oriented and structured such that the belt force exerts a closing moment rather than an open moment to the latch 21. After a certain level, the impact force plastically deforms the cross member 15 and, where appropriate, the adapter 17. This deformation slightly increases the distance of the cross member 15 from the bolt 23 (and, if appropriate, the point of engagement of the latch 21 to the adapter 17). If the latch 21 pivots upwards due to the change in geometry, the stopper 21b is brought into contact with the adapter 17-in this case in the opening direction-to prevent further opening of the latch 21. .

Reference list

1: vehicle seat

3: seat structure

4a: first seat rail

4b: second seat rail

5: front slewing bearing

6: rearfoot

7: locking device

8: backrest

9: accessories

11: belt buckle

15: cross member

17: adapter

17a: rug

21: latch

21a: internal features

21b: stop

21c: outer contour

23: bolt

25: seat belt

Claims (12)

As a vehicle seat, in particular a car seat, Having a seat structure (3) and at least one belt buckle (11), The seat structure 3 is capable of being longitudinally displaceable with respect to the first seat rail and one or more first seat rails 4a which do not move during longitudinal adjustment for the longitudinal adjustment of the vehicle seat 1. Has one or more second seat rails 4b, The belt buckle 11 is attached to the adapter 17 and is disposed between two longitudinal sides of the seat structure 3, The vehicle seat 1 can be moved from a use position to a non-use position, for this purpose the seat portion structure 3 can be pivoted, and the adapter 17 is in particular latched by the vehicle structure. In the vehicle seat which can be unlocked with respect to The adapter 17 is connected to the first seat rail 4a, characterized in that the belt buckle 11 remains stationary during longitudinal adjustment. Vehicle seat. The method of claim 1, When starting from the use position to the non-use position and / or returning from the non-use position to the use position, the latch 21 is subjected to an opening moment, and the use position Receives no moment or a closing moment in the event of a collision Vehicle seat. The method according to claim 1 or 2, When starting from the use position to the non-use position and back from the non-use position to the use position, the lines of application of the force acting on the latch 21 are directed vertically upwards or downwards. doing Vehicle seat. The method according to any one of claims 1 to 3, In the event of a crash, the line of application of the force acting on the latch 21 is obliquely directed upwards. Vehicle seat. The method according to any one of claims 1 to 4, The latch 21 has features 21a and 21c, characterized in that the structure and orientation of the action of the features determine the opening and / or closing moment. Vehicle seat. The method according to any one of claims 1 to 5, The latch 21 is coupled to the adapter 17 and is locked to the use position by bolts 23 mounted on the vehicle structure. Vehicle seat. The method of claim 6, The latch 21 has an internal shape 21a, and the internal shape surrounds the bolt 23 in a use position, and opens and releases the bolt 23 when moved to the non-use position. By Vehicle seat. The method according to claim 6 or 7, The latch 21 has an outer shape 21c, and the outer shape comes into contact with the bolt 23 when it returns to the use position, and is opened. Vehicle seat. 9. The method according to any one of claims 1 to 8, The latch 21 has a stopper 21b, which stops 21b pivotally of the latch 21-preferably compressively stressed-against the adapter 17 in the closed and / or open direction. Characterized in that the angle is limited in particular by bringing it into contact with the adapter 17. Vehicle seat. The method according to any one of claims 1 to 9, The seat portion structure 3 has a cross member 15, the cross member having an aft portion on the adapter 17 and / or the first seat rail 4a and / or the first seat rail 4a. rear foot; 6) is fixedly connected Vehicle seat. The method of claim 9, The cross member 15 and / or the adapter 17 are characterized in that they are particularly plastically deformed in the event of a crash. Vehicle seat. The method of claim 11, The deformation of the cross member 15 and / or the adapter 17 prevents the latch 21 from coming into contact with the adapter 17 by means of a stopper 21b, in particular, to prevent opening of the latch 21. Characterized Vehicle seat.

Images