A connection mechanism is used for detachably installing a carrier device to a supporting device. The connection mechanism includes a first base, fixed on the supporting device, a second base, fixed on the carrier device and detachably connected to the first base, a latch, movably disposed on the second base and corresponding to the first base, and an operating component, disposed on the second base and operably connected to the latch. The operating component selectively drives the latch to move to a locking position so that the second base is locked to the first base, or drives the latch to move to an unlocking position so that the second base is unlocked from the first base.

An unlock device includes at least one operating member, a first unlock module and a second unlock module. The at least one operating member is movably disposed on a frame, wherein the frame is equipped with a first lock mechanism and a second lock mechanism. The first unlock module is movably disposed on the frame and connected to the first lock mechanism. The second unlock module is movably disposed on the frame and connected to the second lock mechanism. The at least one operating member moves to drive the first unlock module to move to unlock the first lock mechanism or drive the second unlock module to move to unlock the second lock mechanism.

A foldable pushchair chassis, particularly a sport-model pushchair chassis, buggy chassis or similar vehicle chassis for children, comprising wheels and a push element for pushing the pushchair chassis, wherein said pushchair chassis can be brought at least into a lockable usage state and into a folded, lockable storage state, and a, particularly manual, actuation device is provided and configured such that during transfer from the locked usage state into the locked storage state, at least two locking procedures can occur, in particular both release of the locking in the usage state and adjustment of locking in the storage state, by means of a single first actuation of said actuation device.

A child stroller apparatus includes a rear leg frame having a first side segment fixedly connected with a first coupling part, a front leg frame having a second side segment fixedly connected with a second coupling part, a handle frame having a third side segment fixedly connected with a third coupling part, the second and third coupling parts being respectively connected pivotally with the first coupling part, a front guard pivotally connected with the first coupling part, a first linking assembly rotationally coupling the second side segment with the third side segment, and a second linking assembly rotationally coupling the front guard with the second side segment. The front leg frame, the handle frame and the front guard are linked and rotatable relative to the rear leg frame during folding and unfolding of the child stroller apparatus.

A child stroller apparatus includes a first and a second leg portion, a handle frame having a side segment that is coupled with the first leg portion via a pivot connection, a child seat assembled on the first leg portion, the child seat being slidable along the first leg portion, and a linkage respectively connected with the side segment and the child seat, whereby a sliding movement of the child seat along the first leg portion is linked to a rotation of the handle frame relative to the first leg portion.

The application discloses a frame of double-person baby carriage and a frame folding mechanism thereof The frame folding mechanism comprises an upper link, a lower link, a middle upright rod, two upper supporting rods, two lower supporting rods and two foot frames. The upper link and the lower link are spaced apart in a vertical direction; the middle upright rod is vertically connected between the upper link and the lower link; first ends of the two upper supporting rods are pivotally connected to both ends of the upper link; first ends of the two lower supporting rods are pivotally connected to both ends of the lower link; the foot frames are arranged in a vertical direction, top ends of the foot frames are pivotally connected to second ends of the upper supporting rods, bottom ends of the foot frames are pivotally connected to second ends of the lower supporting rods.

An infant stroller apparatus includes a first and a second leg frame respectively having a first and a second side segment respectively connected fixedly with a first and a second coupling part, and a handle frame having a third side segment fixedly connected with a third coupling part. The second and third coupling parts are respectively connected pivotally with the first coupling part. Moreover, the infant stroller apparatus includes a first latch operable to rotationally lock the handle frame with respect to the first leg frame, a second latch operable to rotationally lock the second leg frame with respect to the first leg frame, and a linkage assembly respectively connected with the third coupling part and the second latch such that a folding rotation of the handle frame relative to the first leg frame urges an unlocking displacement of the second latch.

A stroller frame includes a bottom pipe, a rear foot, a handle, a carrier device, and a linking component. The rear foot is pivoted to the bottom pipe and the handle. A rear end of the carrier device is detachably connected to the rear foot. The linking component is pivotally bendable. Two opposite ends of the linking component are pivoted to the handle and the bottom pipe respectively. A middle portion of the linking component is pivoted to the rear foot. A front end of the carrier device is pivoted to the linking component in an engageable manner, and the linking component drives the carrier device to be folded when the stroller frame is folded. Therefore, the stroller frame can be folded into a smaller size easily, which is convenience for storage and transportation. Furthermore, depending on different situations, the carrier device can be detached from the stroller frame.

A folding perambulator has a wheeled foldable frame 1 with front frame members 10 which may be folded toward rear frame members 5 when a seating member 2 is removed from the frame 1. A handle 7 is also arranged to be foldable downwardly toward the rear wheels 3. A locking mechanism 6 is provided to permit the frame and handle to be folded. The handle includes a rotatable member 25 which, in one direction of rotation, is arranged to adjust the length of the handle by permitting telescoping of tubular members 26, 27, and in an opposite direction of rotation to cause the locking mechanism, which includes a dog clutch 80, to be disengaged to permit the frame and handle to be folded to a closed position.

The invention is directed to a baby carriage, comprising lateral articulated joints, each having a connection for a leg of a push bar, a front wheel strut and/or a rear wheel strut, of which at least two elements are pivotable relative to one another about an articulated axis extending transversely with respect to the travel direction, the connection for a first of at least two elements of an articulated joint which are pivotable relative to one another being connected in a rotatably fixed manner to an inner disk-shaped part of the articulated joint, and the connection for a second of the at least two elements of the articulated joint in question which are pivotable relative to one another being connected or coupled in a rotatably fixed manner to at least two housing end-face plates in parallel to the disk-shaped part, and/or to articulated plates of the articulated joint in question situated in between, the plates gripping the inner disk-shaped part at its two flat sides, wherein at least two housing end-face plates and/or articulated plates on both sides of the inner disk-shaped part may be pulled toward one another by means of a connecting part and thus frictionally and/or interlockingly pressed from both sides against the inner disk-shaped part of the articulated joint in order to lock the articulated joint, but by loosening the connecting part are releasable from the inner disk-shaped part to such an extent that the frictional and interlocking connection is released for relative adjustment of the articulated joint.