Height-adjustable vehicle seat having a crash locking unit
First Claim
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1. A vehicle seat for being mounted to a vehicle structure, and for operating advantageously in the event of a crash of predetermined magnitude, the vehicle seat comprising:
- at least one multi-bar linkage, wherein the multi-bar linkage includes at least four link mechanisms, wherein prior to the crash of predetermined magnitude the multi-bar linkage is effective as a four-bar linkage for setting the seat'"'"'s height, and wherein the at least four link mechanisms includes at least(a) a frame for being fixed with respect to the vehicle structure,(b) a rocker, and(c) a link mechanism positioned between the frame and the rocker;
a crash locking unit for locking at least the frame and the rocker to one another in the event of the crash of predetermined magnitude; and
a second locking unit, whereinfor two adjacent link mechanisms of the at least four link mechanisms, the second locking unit provides a frictional interaction by way of which the second locking unit rigidly connects the two adjacent link mechanisms together prior to the crash of predetermined magnitude,the second locking unit is operative for opening after a limit force is exceeded in response to the crash of predetermined magnitude, so that relative movement can occur between the two adjacent link mechanisms, andthe second locking unit includes(a) a locking bar pivotably mounted on a first of the two adjacent link mechanisms,(b) a counterpart on a second of the two adjacent link mechanisms, and(c) a spring between the locking bar and the first of the two adjacent link mechanisms.
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Abstract
A vehicle seat (1), in particular a motor vehicle seat, has a multi-bar linkage (4) which is defined by at least four link mechanisms (5, 6, 7, 8, 9) and is intended for setting the seat height, and a crash locking unit (21). The link mechanisms include a frame (5), which is fixed on the vehicle structure, and a rocker (8). In the event of a crash, the crash locking unit (21) locks the frame (5) and the rocker (8) to each other. An additional link mechanism (7) is provided between the frame (5) and the rocker (8).
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Citations
20 Claims
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1. A vehicle seat for being mounted to a vehicle structure, and for operating advantageously in the event of a crash of predetermined magnitude, the vehicle seat comprising:
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at least one multi-bar linkage, wherein the multi-bar linkage includes at least four link mechanisms, wherein prior to the crash of predetermined magnitude the multi-bar linkage is effective as a four-bar linkage for setting the seat'"'"'s height, and wherein the at least four link mechanisms includes at least (a) a frame for being fixed with respect to the vehicle structure, (b) a rocker, and (c) a link mechanism positioned between the frame and the rocker; a crash locking unit for locking at least the frame and the rocker to one another in the event of the crash of predetermined magnitude; and a second locking unit, wherein for two adjacent link mechanisms of the at least four link mechanisms, the second locking unit provides a frictional interaction by way of which the second locking unit rigidly connects the two adjacent link mechanisms together prior to the crash of predetermined magnitude, the second locking unit is operative for opening after a limit force is exceeded in response to the crash of predetermined magnitude, so that relative movement can occur between the two adjacent link mechanisms, and the second locking unit includes (a) a locking bar pivotably mounted on a first of the two adjacent link mechanisms, (b) a counterpart on a second of the two adjacent link mechanisms, and (c) a spring between the locking bar and the first of the two adjacent link mechanisms. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A vehicle seat for being mounted to a vehicle structure, and for operating advantageously in the event of a crash of predetermined magnitude, the vehicle seat comprising:
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at least one multi-bar linkage, wherein the multi-bar linkage includes at least four link mechanisms, wherein prior to the crash of predetermined magnitude the multi-bar linkage is effective as a four-bar linkage for setting the seat'"'"'s height, and wherein the at least four link mechanisms includes at least (a) a frame for being fixed with respect to the vehicle structure, (b) a rocker, and (c) a link mechanism positioned between the frame and the rocker; a crash locking unit for locking at least the frame and the rocker to one another in the event of the crash of predetermined magnitude; and a second locking unit, wherein for two adjacent link mechanisms of the at least four link mechanisms, the second locking unit provides a frictional interaction by way of which the second locking unit rigidly connects the two adjacent link mechanisms together prior to the crash of predetermined magnitude, whereby the multi-bar linkage is effective as the four-bar linkage prior to the crash of predetermined magnitude, the second locking unit is operative for opening after a limit force is exceeded in response to the crash of predetermined magnitude, for allowing relative movement between the two adjacent link mechanisms, whereby the multi-bar linkage is at least temporarily effective as a five-bar linkage in response to the crash of predetermined magnitude; and the crash locking unit is operative so that the locking, which is provided by the crash locking unit in response to the crash of predetermined magnitude, is provided at least partially as a result of the multi-bar linkage becoming effective as the five-bar linkage in response to the crash of predetermined magnitude, and the second locking unit includes (a) a locking bar pivotably mounted on a first of the two adjacent link mechanisms, (b) a counterpart on a second of the two adjacent link mechanisms, and (c) a spring between the locking bar and the first of the two adjacent link mechanisms. - View Dependent Claims (17, 18, 19, 20)
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Specification