Implementations of bicycle trailers may include a first end and a second end, the second end opposite the first end, a first plurality of latches coupled to the first end, and a second plurality of latches coupled to the second end. The first plurality of latches may be configured to secure a rear-facing child's car seat facing the first end. The second plurality of latches may be configured to secure the rear-facing child's car seat facing the second end. The second plurality of latches may be configured to secure a front-facing child's car seat facing the first end.

Systems and methods for a convertible car seat in accordance with embodiments of the invention are disclosed. In one embodiment, a convertible car seat includes an outer shell having a seat portion and a back portion, a base assembly having a mechanism for mounting the car seat, an adjustable headrest, and an adjustment mechanism.

A child safety seat and a safety belt limiting device are disclosed. The child safety seat includes a safety belt limiting device and a seat body. The safety belt limiting device is configured to be attached to the seat body, the safety belt limiting device includes a first engagement portion, and the safety belt limiting device is adapted to detachably engage with a shoulder belt portion of a vehicle-mounted safety belt through the first engagement portion, so as to apply downward traction to the shoulder belt portion.

A tether anchorage device for a swivel seat of a vehicle is provided. The device is configured such that an anchor including a horizontal bar and a vertical bar is mounted on a rear surface of the swivel seat, and a tether belt for fixing a baby seat is anchored to the anchor while being bound in a vertical direction as well as a horizontal direction of the swivel seat, so that the baby seat may be securely fixed to the swivel seat regardless of a rotating position of the swivel seat.

The disclosure provides a tether assembly for fixing a child safety seat to a vehicle. The tether assembly comprises: an adjuster for adjusting a length of the tether assembly; a tether fixing portion being fixable to a corresponding fixing portion of the vehicle; a top tether comprising at least two belts, the top tether connects the child safety seat to the tether fixing portion via the adjuster, and at least one belt of the top tether passes through the adjuster to form at least two free ends. The tether assembly of the disclosure may be tightened in at least two directions, thereby making the mounting of the tether assembly more convenient.

A support base for a child safety seat includes a shell, a belt clamp and a latching mechanism. The shell is adapted to receive a child seat thereon, and has a belt anchoring region including a first surface and a second surface. The belt clamp is pivotally connected with the shell, and is operable to clamp a first belt portion and a second belt portion respectively adjacent to the first surface and the second surface. The latching mechanism is operable to lock the belt clamp in a clamping state.

A conveyance seat includes a cover member protecting an anchor member extending from the seat main body so that a child safety seat is connected. The cover member includes an outside cover, and an inside cover accommodated in the outside cover and having an anchor engaging portion. The cover member sandwiches an extending part of the anchor member with the outside cover and the inside cover. The cover member is attached to the seat main body such that an outer periphery portion of a skin opening hole is sandwiched by the outside cover and the inside cover. A skin locking member is accommodated in a flange accommodating recess of the outside cover together with an outer peripheral flange of the inside cover.

A quick acting belt tensioning mechanism for securing a child safety seat into a vehicle having a tensioning member with a hook-like engagement structure rotatably mounted on the safety seat adjacent to a belt path for a vehicle seat belt. Engaging the seat belt in the engagement structure and rotating the tensioning member by movement of the lever tensions the seat belt by wrapping the seat belt around the tensioning member. The lever is slideably disposed on the tensioning member to close the opening of the hook-like structure and prevent disengagement of the seat belt therefrom and to inhibit rotation of the tensioning member to the tensioned position unless the lever is properly positioned. A latching mechanism is provided to restrain the tensioning member and lever in the tensioned and closed position. The seat shell and lever may include structures to further constrain seat belt tensioning unless the lever is properly positioned.

A tether anchorage device for a swivel seat of a vehicle is provided. The device is configured such that an anchor including a horizontal bar and a vertical bar is mounted on a rear surface of the swivel seat, and a tether belt for fixing a baby seat is anchored to the anchor while being bound in a vertical direction as well as a horizontal direction of the swivel seat, so that the baby seat may be securely fixed to the swivel seat regardless of a rotating position of the swivel seat.

A handheld implement for threading a seatbelt through a car seat comprising a planar semi-flexible elongated plate having a handle and tab for snagging a tongue or belt of a seatbelt and pulling or pushing said seatbelt through a recess traversing a child car seat.