Patent ID: 6193325
Filing Date: 2001-02-27
Classification: B60B,Y10T

Abstract:
A fixing device for a hub and a tube of a baby stroller frame, comprising:a hub including an axial hole having two ends, each said end of the hub having a bearing mounted therein;a shaft being tubular and having an appropriate length, the shaft including a longitudinal hole having two ends, each said end of the shaft including a compartment having a diameter greater than that of the longitudinal hole of the shaft, one of the ends of the shaft including an outer periphery with an outer threading formed thereon, the shaft being extended through the bearings in the hub and locked in place by a nut that is threadedly engaged with the outer threading of the shaft, the other end of the shaft being extended beyond the hub and including two radial holes, a ball being partially received in each said radial hole and partially exposed beyond said radial hole;a core rod including an enlarged first end and a second end with a neck portion and a groove, a spring being mounted around the core rod, the core rod being extended through the longitudinal hole of the shaft with the enlarged first end of the core rod extended beyond said one of the ends of the shaft with the outer threading, the spring being received in one of the compartments defined in said one of the ends of the shaft, a C-clip being mounted in the groove and retained in the other compartment defined in the other end of the shaft;a dust cap being a soft cap made of plastic material with resiliency to provide a chamber for receiving the enlarged first end of the core rod that is extended beyond the shaft, the dust cap including a dome that forms a push portion and a skirt that forms a connecting portion having a diameter smaller than that of the dome, the dust cap preventing entrance of dust into the axial hole of the hub; anda fixing sleeve securely mounted in the tube of the baby stroller frame, the fixing sleeve including a longitudinal hole through which a portion of the shaft outside the hub extends, the balls on the shaft being biased outward by the core rod and thus exposed at a position bearing against an end of the fixing sleeve, thereby completing assembly of the baby stroller frame and the hub.