An assembly includes a seat. The assembly includes a buckle supported by the seat. The assembly includes a buckle mechanism pivotable relative to the seat between a stowed position and a latching position, and having a carrier movable between a retracted position and an extended position. The assembly includes a latch plate supported by the carrier and engaged with the buckle when the buckle mechanism is in the latching position and the carrier is in the extended position.

An assembly includes a vehicle roof and a vehicle floor spaced from the vehicle roof. The assembly includes a seatbelt assembly for accommodating a wheelchair. The seatbelt assembly is slidably supported by the vehicle roof and the vehicle floor. The seatbelt assembly is slidable along the vehicle roof and the vehicle floor along a vehicle-longitudinal axis. The seatbelt assembly has a seatbelt webbing elongated in a direction from the vehicle roof to the vehicle floor. The assembly includes a seatbelt buckle slidably supported by the vehicle floor. The seatbelt buckle is slidable relative to the vehicle floor along the vehicle-longitudinal axis.

An assembly includes a vehicle roof and a vehicle floor spaced from the vehicle roof. The assembly includes a seatbelt assembly for accommodating a wheelchair. The seatbelt assembly is slidably supported by the vehicle roof and the vehicle floor. The seatbelt assembly is slidable along the vehicle roof and the vehicle floor along a vehicle-longitudinal axis. The seatbelt assembly has a seatbelt webbing elongated in a direction from the vehicle roof to the vehicle floor. The assembly includes a seatbelt buckle slidably supported by the vehicle floor. The seatbelt buckle is slidable relative to the vehicle floor along the vehicle-longitudinal axis.

An assembly includes a seat. The assembly includes a buckle supported by the seat. The assembly includes a buckle mechanism pivotable relative to the seat between a stowed position and a latching position, and having a carrier movable between a retracted position and an extended position. The assembly includes a latch plate supported by the carrier and engaged with the buckle when the buckle mechanism is in the latching position and the carrier is in the extended position.

An assembly includes a seat. The assembly includes a buckle supported by the seat. The assembly includes a buckle mechanism pivotable relative to the seat between a stowed position and a latching position, and having a carrier movable between a retracted position and an extended position. The assembly includes a latch plate supported by the carrier and engaged with the buckle when the buckle mechanism is in the latching position and the carrier is in the extended position.

A vehicle seatbelt assembly includes a load limiter having a seatbelt attachment portion and a seatbelt tension control mechanism that is configured to increase the length of a shoulder portion of a seatbelt in response to rapid or sudden deceleration of a vehicle, thereby reducing a level of tension experience by a seatbelt.

A vehicle seatbelt assembly includes a load limiter having a seatbelt attachment portion and a seatbelt tension control mechanism that is configured to increase the length of a shoulder portion of a seatbelt in response to rapid or sudden deceleration of a vehicle, thereby reducing a level of tension experience by a seatbelt.

An assembly includes a vehicle roof and a vehicle floor spaced from the vehicle roof. The assembly includes a seatbelt assembly for accommodating a wheelchair. The seatbelt assembly is slidably supported by the vehicle roof and the vehicle floor. The seatbelt assembly is slidable along the vehicle roof and the vehicle floor along a vehicle-longitudinal axis. The seatbelt assembly has a seatbelt webbing elongated in a direction from the vehicle roof to the vehicle floor. The assembly includes a seatbelt buckle slidably supported by the vehicle floor. The seatbelt buckle is slidable relative to the vehicle floor along the vehicle-longitudinal axis.

An assembly includes a vehicle roof and a vehicle floor spaced from the vehicle roof. The assembly includes a seatbelt assembly for accommodating a wheelchair. The seatbelt assembly is slidably supported by the vehicle roof and the vehicle floor. The seatbelt assembly is slidable along the vehicle roof and the vehicle floor along a vehicle-longitudinal axis. The seatbelt assembly has a seatbelt webbing elongated in a direction from the vehicle roof to the vehicle floor. The assembly includes a seatbelt buckle slidably supported by the vehicle floor. The seatbelt buckle is slidable relative to the vehicle floor along the vehicle-longitudinal axis.

A vehicle seatbelt assembly includes a first member, a second member, a buckle mechanism, and a clutch mechanism. The first member is configured to attach to one of a vehicle floor structure and a seat structure. The second member is supported on the first member. The second member is configured for limited sliding movement relative to the first member. The buckle mechanism is attached to the second member for movement therewith. The buckle mechanism has a latch device configured to releaseably retain a seatbelt latch tongue member. The clutch mechanism is disposed between the first member and the second member and is operable to switch between a dis-engaged state and an engaged state. In the dis-engaged state, the clutch mechanism allows movement of the second member relative to the first member. In the engaged state, the clutch mechanism prevents movement of the second member relative to the first member.