This utility model discloses a foldable frame for a cart, including the front wheel unit part, the rear wheel unit part, the side-wall connection structure, the scissor structure I, the scissor structure II, the bottom support structure. The said scissor structure I is movable-connected on the front wheel unit part, and both the said scissor structure II and the scissor structure I have the same structure and are connected on the rear wheel unit part. Two groups of the said side-wall connection structure are provided and they are respectively connected on the front wheel unit part and the rear wheel unit part on the same side. Totally, the said bottom support structure are movable-connected to two groups of the said front wheel unit part and the rear wheel unit part. This utility model belongs to the technology field of the frame for a cart.

A hand truck includes a cart base for carrying an article and two handle modules pivotally mounted thereto. When the hand truck is in a first state, the cart base is horizontally positioned and one handle module is pivoted to an upright position. When the hand truck is in a second state, the cart base is kept upright, one of the handle modules is pivoted to a spread position, and the other one of the handle modules is horizontally positioned and cooperates with the cart base to carry the article. When the hand truck is in a platform state, the cart base is horizontally positioned, and the handle modules are pivoted to a downward extending position so that the cart base is away from the ground.

A folding golf cart including a chassis, a main rod, a handle, a handle-connected seat body, a front wheel, two rear wheels, and two sets of foldable rear wheel frames. The chassis includes two chassis rods, a front-connected seat body, and a rear-connected seat body. The front ends of the two chassis rods are fixed to the front-connected seat body. The rear ends of the two chassis rods are fixed to the rear-connected seat body. The handle is rotationally connected to the handle-connected seat body. The bottom part of the main rod is hinged to the rear-connected seat body. The two rear wheels are respectively connected to the sides of the rear-connected seat body through the foldable rear wheel frames. The middle part of the front-connected seat body is connected to the front wheel through a front wheel retraction and extension device.

A stroller includes a texture carrier, a wheel set and a vehicle frame. The wheel set includes a front wheel and a rear wheel. The vehicle frame includes a first tube, a second tube, a third tube, a fourth tube and a first pivot unit. The front wheel is disposed on the first tube. The rear wheel is disposed on the second tube. The third tube includes a front section and a rear section connected to each other. The fourth tube is pivoted between the first tube and the second tube. The first pivot unit is disposed between the second tube and the fourth tube. The first pivot unit switched into an unfolded mode can stabilize the first tube and the fourth tube at the same direction. The pivot unit switched into a folded mode can rotate the fourth tube relative to the first tube and the second tube.

A child stroller is provided in the present disclosure. A frame of the child stroller includes a first bracket and a second bracket that are foldable. The first bracket is provided with an engaging member, the engaging member includes a first engaging portion and a second engaging portion, and the first engaging portion is configured to be detachably engaged with a child carrier. The second bracket is provided with a locking portion, and when the first bracket and the second bracket are in a folded state, the locking portion and the second engaging portion are detachably engaged with each other to lock the first bracket and the second bracket in the folded state.

A lock is provided for a folding wagon to secure the wagon frame in the folded position when desired. The lock has an arm that has a receiver at a first end and a latch at a second end. The receiver is secured to a first frame member of the folding wagon. The latch has a ramp and a shoulder. The arm is able to be flexed to allow the shoulder to engage a second frame member of the folding wagon when the folding wagon is moved to a folded position, and to allow the shoulder to disengage from the second frame member when the latch is flexed downwardly.

A foldable push chair comprises a central chassis assembly defining a central axis extending substantially perpendicularly to a normal direction of travel of the push chair, the push chair has at least three wheel supporting legs extending from the central chassis and rotatable about the central axis between a folded and unfolded state, in the unfolded state at least one wheel supporting leg extending in a forward direction and at least one wheel supporting leg extending in a rearward direction, the forwardly and rearwardly extending wheel supporting legs being coupled together such that they rotate in opposite directions around the central axis during a folding or unfolding operation, latching means engagable with at least one wheel supporting leg and the central chassis or handle assembly for ensuring the push chair can be latched in either or both of an unfolded state or a folded state, energy storage means associated with at least one wheel supporting leg and the central chassis or handle assembly, configurable to be loaded with energy either: a) when the push chair is changed from a folded state to an unfolded state, or b) when the push chair is changed from a unfolded state to a folded state; when the energy storage means is at least partially loaded with energy at least some of the energy stored in the energy storage means being used to assist in either: a) folding the push chair, or b) unfolding the push chair respectively when the latching mechanism is released.

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 stroller frame (100) includes a front leg (10), a bottom tube (30), a rear leg (20), an upper support member (40) and a lower support member (50). The front leg (10), the bottom tube (30), the lower support member (50) and the upper support member (40) are pivotally connected to each other to form a four-bar linkage structure. The rear leg (20) is connected to an end of the bottom tube (30). A lock mechanism (60) is disposed at a pivot joint between the upper support member (40) and the lower support member (50). The lock mechanism (60) is able to lock the upper support member (40) and the lower support member (50) at an expanded angle, such that the front leg (10) is able to be expanded with respect to the bottom tube (30). The lock mechanism (60) is unlocked to release the upper support member (40) and the lower support member (50), such that the front leg (10) is able to be folded with respect to the bottom tube (30).