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).

The delayed-action collapsible stroller device may be simple to operate, compact when folded, and robust and reliable during both use and storage. Such a device may further comprise a delayed-action folding mechanism to maximize its compactness when folded, and may further comprise advanced locking mechanisms to enhance its structural rigidity and ability to carry heavier users. The delayed-action collapsible stroller device may further comprise standardized mounting points and a plurality of accessories to enhance its functionality.

The disclosure relates to a folding stroller, and relates to the field of strollers, including a front frame, a rear frame, a folding mechanism configured for connecting the front frame and the rear frame, a set of front wheels mounted to the front frame and a set of rear wheels mounted to the rear frame; the rear wheel includes a connecting base, a wheel body and a brake mechanism; the brake mechanism includes a brake turntable and a pedal member configured for cooperating with the brake turntable; a plurality of brake grooves are circumferentially spaced apart from the brake turntable; and the pedal has a brake projection inserted into the brake groove. The disclosure can improve the braking effect of the wheels in the folding stroller and has a more ideal structural strength.

A wheeled childcare device is provided that can reliably maintain a braking state. The wheeled childcare device includes: a body frame; a pair of arm members each having an upper end pivotally held at a lower end of a corresponding one of a pair of legs via a corresponding one of a pair of pivot shafts; a pair of wheels each rotatably supported at a lower end of a corresponding one of the arm members via a corresponding one of a pair of axles; and a brake mechanism configured to stop rotation of the wheels and including a pair of lock members, an operating member, and a connecting member connecting the operating member with the lock members. The brake mechanism is configured to perform a braking operation and maintain a braking state without being interfered with by a pivoting motion of the arm members.

A wheeled childcare device is provided that can reliably reduce or eliminate the possibility of twisting of a wire. The wheeled childcare device includes legs, a caster mechanism, and a brake mechanism. The brake mechanism includes a pair of lock members, an operating member, and a connecting member connecting the operating member with the lock members. The connecting member includes a pair of moving members configured to move in response to an operation of the operating member, an elongated member connecting the operating member with the moving members, and a pair of driven members each configured to be rotatable relative to a corresponding one of the moving members, and each configured to follow movement of the corresponding moving member. Each of the lock members is configured to be displaceable between engaged and disengaged positions in conjunction with movement of the corresponding driven member.

A wheeled childcare device is provided that can reliably reduce or eliminate the possibility of twisting of a wire. The wheeled childcare device includes legs, a caster mechanism, and a brake mechanism. The brake mechanism is configured to stop rotation of a pair of wheels, and includes a pair of lock members, an operating member, and a connecting member connecting the operating member with the lock members. The connecting member includes: an elongated member passing through a position different from a swivel axis of the caster mechanism; a pair of moving members connected to the elongated member and configured to move in response to an operation of the operating member; and a pair of driven members each configured to be rotatable relative to a corresponding one of the moving members, and each provided with a lock support portion that supports a shaft of a corresponding one of the lock members.

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

A wheel set brake mechanism includes a drive member mounted on the movable frame; and a brake assembly including a drive pin, a traction member and a locking member. The drive pin is operably connected to the drive member. The traction member includes a first cable and a second cable, a first end of the first cable is connected to the drive pin, a second end of the first cable extends into an inner cavity of the hollow shaft to be rotatably connected to a first end of the second cable, and a second end of the second cable is connected to the locking member. The drive member is configured to drive the drive pin to slide so that the traction member causes the locking member to slide to lock the wheel.