DE10340775B4 - seat fitting - Google Patents

Abstract

 Backrest, which can be folded down from a design position into a table position, an upper part (1) connected to the backrest being rotatably connected to a lower part (2) connected to the seat, the backrest being fixable in the table position by a latching device (14) , characterized in that the latching device (14) is formed from a latching lug (13) on the lower part (2) and a latching contour (8) on a hook (5) which is assigned to the upper part (1), the latching contour (8 ) is stepped and the latching contour (8) has a locking contour (9) and a catching contour (10), the latching nose (13) being guided past the catching contour (10) when the backrest is pivoted from the design position into the table position.

Description

The invention relates to a seat fitting according to the preamble of patent claim 1.

In this context, on the DE 101 32 701 A pointed, which discloses a back gauge, which is fixed in the table position by a latching device.

So far, especially locks for backrests in the so-called design position are known. Under design position that position of the backrest is understood, which sets the user to the cheapest seating.

It is desirable that even in a crash, the backrest remains in this design position, for which there are special crash locks.

For example, from the DE 197 42 813 A1 a crash lock is known, wherein the backrest at its upper free side portions releasably lockable to the vehicle side walls and at least one supporting the backrest retaining strip has attached via a bearing block to the vehicle floor and with the backrest pivotally relative to the bearing block is pivotable. The retaining strip is pivotally mounted on a lever via a first pivot axis and the lever via a second pivot axis hingedly connected to the bearing block. The lever is spring loaded against a retaining stop and is thereby locked in its rest position. The provided on the bearing block stop is designed as a crash stop on which the retaining strip with the backrest is vorbeischwenkbar in normal operation. The second pivot axis is arranged such that the first pivot axis is displaced in a counter to the action of the spring taking place pivoting of the lever about the second pivot axis with the retaining strip down so that the retaining strip abuts the crash stop.

TASK

The object of the invention is to secure a backrest in another position.

SOLUTION OF THE TASK

To achieve the object, the features of claim 1. Advantageous embodiments are specified in the dependent claims.

In an inventive embodiment, the latching device consists of a latching lug on the lower part and a latching contour on a hook, which is associated with the upper part. This hook is central in this case. Preferably, he assumes not only the determination of the backrest in the table position, but also in the design position. In the design position, it engages with a catch hook a corresponding locking bolt on the lower part of the seat fitting. In this holding position, the hook is held by a corresponding spring.

If the backrest from the design position are brought into the table position, it is od over a Bowden cable. The like. Pulled on the hook, so that the catch hook comes out of engagement with the locking pin. Only now is the backrest released.

When tilting the backrest in the table position beats in the final position, a stop on the upper part against a stop on the lower part. As a result, the movement of the two parts is limited relative to each other.

Towards the end of the pivoting movement of the hook hits the upper part of the seat fitting with the locking contour on the locking lug. Against the power of o. G. Spring can dodge the hook, so that the latch can slide on the locking contour.

In this case, the locking contour is stepped. The latching hook first slides on a catching contour and then on a locking contour, wherein it bears against the locking contour in the end position only approximately punctiformly. As a result, a self-locking between these two components is avoided, so that the hook, if desired, can also be easily released by a train on a Bowden cable from the locking position.

If, on the other hand, there is a crash, it can happen that the hook is automatically moved against the force of the spring holding it in the locking position. This can cause the locking lug and locking contour out of engagement. If, in this case, the backrest is lifted slightly out of the table position, the catching contour strikes the latching lug, whereby it rests somewhat flat on the latching lug. But this can be effectively avoided further avoidance of locking lug and hook, so that the backrest can not continue to straighten.

figure description

Further advantages, features and details of the invention will become apparent from the following description of a preferred embodiment and from the drawings; these show in

1 a side view of a seat fitting;

2 an enlarged side view of a section of the seat fitting according to 1 ;

3 an enlarged side view of a section of the seat fitting according to 1 in a further position of use.

A seat fitting S has according to 1 a shell 1 and a lower part 2 on. The top 1 will be on a back gauge and the bottom part 2 mounted in the seat frame of a seat, not shown. To the top 1 closes in the embodiment shown, a wobble fitting 16 at.

The top 1 and the lower part 2 are about a pivot rivet 3 connected to each other, where the upper part 1 From a design position (normal sitting position of the backrest) in a table position (about horizontal position of the backrest) can rotate. The movement of shell 1 opposite lower part 2 is by stops 4.1 respectively. 4.2 on both parts 1 and 2 limited.

A catch 5 is over a rivet hook 6 at the top 1 attached and turns around this rivet hook 6 , Its movement is by a Bowdenzugbolzen 7 limited, in a curved slot 17 in the shell 1 intervenes. At one end of the hook 5 is a catch contour 8th on the hook 5 intended. The locking contour 8th has a locking contour 9 and a catching contour 10 on (see 2 ).

Furthermore, a spring 11 one at the top 1 set and engages the other end in a hole 12 in a tab 18 in the hook 5 one.

The lower part 2 forms at the end, at which it with the shell 1 is connected, a catch 13 out. Together with the locking contour 8th that are at the end of the hook 5 located, form these two components 8th and 13 a latching device 14 ,

The lower part 2 is still a locking rivet 15 placed. This locking rivet 15 embraces the hook 5 with a catch hook 19 when the seat is brought into a normal sitting position (design position).

In 2 lie the two stops 4.1 and 4.2 to each other, as is the case with the normal table position. Also clearly is the locking device 14 shown. The catch 13 of the lower part 2 lies on the locking contour 9 of the hook 5 at.

In 3 is the catch after a crash 13 from the locking contour 9 slipped and now sits on the catch contour 10 the locking device 14 , In this figure, the attacks 4.1 and 4.2 separated from each other after a crash and thus show that the upper part 1 has moved.

The operation of the invention is as follows:
In design position, ie the backrest is in a normal sitting position, is the upper part 1 erected. In this position, the hook surrounds 5 the locking rivet 15 and thus puts the top 1 opposite the lower part 2 firmly.

To bring the backrest from its design position in the table position is pulled on a Bowden cable, not shown. This pulls on the hook 5 and causes the hook 5 from the clasping of the Arretierungsniet 15 dissolves and the shell 1 free around the fulcrum rivet 3 can turn until the stop 4.1 at the stop 4.2 rests and the backrest is in table position.

In this position is the catch 13 the locking contour 8th more precisely, the locking contour 9 of the hook 5 be slid. However, it is only occasionally on the locking contour 9 and thus prevents self-locking, so anytime without difficulty, a release of the locking lug 13 is possible.

The feather 11 supports the respective position of the hook 5 and the latch 13 or allows by a yielding a rotation of the hook 5 around the rivet hook when the latch 13 the locking contour 8th slides open.

If there is a crash, the jerky movement caused by an impact can cause the upper part, for example 1 moved to another position. In order to prevent that in this position, the backrest is released, the hook slips 5 at the catch 13 along and this slides into the catch contour 10 , This is the Fang contour 10 like this in 3 recognizable is on the latch 13 on what together with the step-like design of the locking contour 8th causes the backrest to remain locked in the table position. Position Number List 1 top 2 lower part 3 Drehpunktniet 4 attack 5 hook 6 Niethaken 7 Bowdenzugbolzen 8th catch contour 9 locking profile 10 Fang contour 11 feather 12 hole 13 locking lug 14 locking device 15 Arretierungsniet 16 swash fitting 17 Long hole 18 flap 19 hook

Claims (8)

Seat fitting for fixing to a seat and a backrest, which can be folded down from a design position into a table position, wherein an upper part connected to the backrest ( 1 ) rotatable with a seat connected to the lower part ( 2 ), wherein the backrest in the table position by a latching device ( 14 ), characterized in that the latching device ( 14 ) from a catch ( 13 ) at the lower part ( 2 ) and a locking contour ( 8th ) on a hook ( 5 ) is formed, which the upper part ( 1 ), wherein the catch contour ( 8th ) is step-shaped and the locking contour ( 8th ) a locking contour ( 9 ) and a catch contour ( 10 ), wherein when pivoting the backrest of the design position in the table position, the locking lug ( 13 ) at the catch contour ( 10 ) is passed by. Seat fitting according to claim 1, characterized in that the latching lug ( 13 ) of the locking contour ( 9 ) is punctiform, the catch contour ( 10 ) of the catch ( 13 ) rests. Seat fitting according to one of claims 1 or 2, characterized in that the hook ( 5 ) under the force of a spring ( 11 ) against the latch ( 13 ) is held. Seat fitting according to one of claims 1 to 3, characterized in that the hook ( 5 ) the backrest also locked in the design position. Seat fitting according to claim 4, characterized in that the hook ( 5 ) in the design position a locking rivet ( 15 ) at the lower part ( 2 ) with one beyond the catch contour ( 8th ) ( 19 ). Seat fitting according to claim 5, characterized in that the spring ( 11 ) the hook ( 5 ) also holds in the design position. Seat fitting according to one of claims 1 to 6, characterized in that the rotational movement of the upper part ( 1 ) opposite the lower part ( 2 ) around a fulcrum rivet ( 3 ) and by a stop ( 4.1 ), which in table position on a stop ( 4.2 ) on the lower part ( 2 ) is present. Seat fitting according to claim 7, characterized in that the hook ( 5 ) around a rivet hook ( 6 ) at the top ( 1 ) rotates, wherein detent ( 13 ) and locking contour ( 8th ) in the table position between fulcrum rivets ( 3 ) and rivet hooks ( 6 ) is arranged.

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