Backrest for a vehicle seat
First Claim
1. A backrest (1) including a frame structure (2) and a force-generating device (11) for a vehicle seat, having a head restraint (3) which can be adjusted from an in-use position into a safety position under action of the force-generating device (11) which is effective in an accident situation, said head restraint being connected to the backrest via retaining elements protruding into the backrest, the retaining elements being displaceable relative to the backrest (1) under the action of the force-generating device (11) by a pair of slotted-guide mechanisms, each of the slotted-guide mechanisms comprising:
- a slotted guide;
(14) and a sliding block (15) guided in the latter, wherein the sliding block (15), when displaced from the in-use position into the safety position, executes a rotational movement enabling the sliding block to be locked in one of a frictional and form-fitting manner in the slotted guide (14), wherein the retaining elements have at least two guide rods (5) which are guided in a longitudinally displaceable and fixable manner in guide sleeves (6), the guide sleeves being connected to each other via a strut (9) and the force-generating device (11) engaging, on one end, on the strut and, at another end, on the frame structure (2) of the backrest (1).
1 Assignment
0 Petitions
Accused Products
Abstract
The backrest of a vehicle seat having a headrest, which may be displaced from an in-use position to a safety position by the effect of a force generation device, and which is fixed, by means of retaining elements extending into the backrest. The retaining elements may be displaced relative to the backrest, under the effect of the force generating device, by means of at least one connector guide, from a connector into a connector side block. The connector slide block is preferably lockable in the connector on the displacement from the in-use position to the safety position. One embodiment includes a rectangular connector slide block which performs a turning movement on the displacement, as a result of which the radial extent of the above relative to the connector is increased thus locking the connector slide block in the connector with a positive or non-positive fit.
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Citations
22 Claims
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1. A backrest (1) including a frame structure (2) and a force-generating device (11) for a vehicle seat, having a head restraint (3) which can be adjusted from an in-use position into a safety position under action of the force-generating device (11) which is effective in an accident situation, said head restraint being connected to the backrest via retaining elements protruding into the backrest, the retaining elements being displaceable relative to the backrest (1) under the action of the force-generating device (11) by a pair of slotted-guide mechanisms, each of the slotted-guide mechanisms comprising:
- a slotted guide;
(14) and a sliding block (15) guided in the latter, wherein the sliding block (15), when displaced from the in-use position into the safety position, executes a rotational movement enabling the sliding block to be locked in one of a frictional and form-fitting manner in the slotted guide (14), wherein the retaining elements have at least two guide rods (5) which are guided in a longitudinally displaceable and fixable manner in guide sleeves (6), the guide sleeves being connected to each other via a strut (9) and the force-generating device (11) engaging, on one end, on the strut and, at another end, on the frame structure (2) of the backrest (1). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
- a slotted guide;
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18. A backrest (1) including a frame structure (2) and a force-generating device (11) for a vehicle seat, having a head restraint (3) which can be adjusted from an in-use position into a safety position under action of the force-generating device (11) which is effective in an accident situation, said head restraint being connected to the backrest via retaining elements protruding into the backrest, the retaining elements being displaceable relative to the backrest (1) under the action of the force-generating device (11) by a slotted-guide mechanism, the slotted-guide mechanism comprising:
- a slotted guide;
(14) and a sliding block (15) guided in the latter, wherein the sliding block (15), when displaced from the in-use position into the safety position, executes a rotational movement enabling the sliding block to be locked in one of a frictional and form-fitting manner in the slotted guide (14), wherein the retaining elements comprise at least two guide rods (5) which are connected to each other via a strut (9), the force-generating device (11) engaging, at one end, on the strut and, at another end, on the frame structure (2) of the backrest (1). - View Dependent Claims (19, 20, 21, 22)
- a slotted guide;
Specification