A caster wheel assembly includes a wheel mounted for rotation about a horizontal axis within a wheel carriage such that the wheel rotates about the horizontal axis with respect to the wheel carriage. The wheel carriage is positioned within a retention ring such that the wheel carriage can rotate about the vertical axis with respect to the retention ring. The wheel carriage also has an opening on the bottom surface such that the wheel can make contact with the ground. The horizontal axis about which the wheel rotates is offset from the vertical axis about which the wheel carriage rotates. An outer carriage may be included such that the outer carriage is positioned within the retention ring and the wheel carriage is positioned within the outer carriage. The outer carriage would be able to rotate about the vertical axis with respect to both the retention ring and the wheel carriage.

A caster wheel brake system for a mobile support system such as a cart or other wheeled structure is operable to selectively secure caster wheels against rolling rotation. The system includes a caster wheel assembly and a braking mechanism mounted nearby. A pair of brake actuation inputs, such as handles or levers, can be secured to the cart and independently operated to rotate a rotator link, which in turn rotates a brake-actuating link. Rotation of the brake-actuating link deactivates the braking mechanism to allow rolling rotation of the caster wheels. Optionally, the operation of one of the handles to deactivate the braking mechanism has no effect on the other handle.

The present invention provides a structure for assembling a snap-on caster of a draw-bar case. The draw-bar case includes a case body and four caster assemblies. The caster assembly includes a caster and an upper positioning cover. The caster includes a mounting pedestal and a universal wheel. Four sides of the case body are each provided with an installation slot. Several insertion plates are disposed on an inner side surface of the upper positioning cover. The installation slot is penetrated to form a through hole that is disposed corresponding to the insertion plate. The installation pedestal is provided with a buckle plate that is disposed corresponding to the through hole. The buckle plate is penetrated to form an insertion hole. Both sides of one end of the insertion plate are each provided with an inverted buckle. The insertion plate is snap-fitted onto the insertion hole after passing through the through hole and the insertion hole sequentially.

A wheel for a luggage case, including an hub rotatably coupled to the luggage case, an outer rim radially spaced a distance from the hub by a plurality of spokes, and a tread portion positioned around the outer rim for engaging a support surface. At least one of the spokes includes a suspension portion having a shape that is curved around and concave to the axis of rotation. The suspension portion resiliently deflects to absorb impact loads to the wheel.

The present disclosure relates to a wheel connecting structure and a baby carrier. The wheel connecting structure includes a fixed base, a rotatable base, a rotating shaft and an anti-swing member. The rotatable base is rotatably connected to the fixed base by the rotating shaft. The anti-swing member has an abutting portion. The anti-swing member is arranged on one of the fixed base and the rotatable base, and the abutting portion abuts against the other of the fixed base and the rotatable base. The abutting portion is provided with a lubricating structure.