Patent ID: 7377231

Claim:
A retractable pet house comprising an enclosure frame and a top frame; the enclosure frame including a plurality of poles, foldable connection rod units, locking joints and doorframe joints; each pole including an upper end and a lower end; each pole comprising an upper pole and a lower pole; the upper pole being inserted into the lower pole to become retractable; the upper end and the lower end of each pole being respectively fixed to relative locking joints; the locking joint provided at the upper end of each pole being provided with a sleeve; the poles being alternatively distributed; the foldable connection rod units being pivoted to one another by means of connection rods; each foldable connection rod unit including on each side an upper end and a lower end respectively pivoted to the locking joints at the upper and the lower ends of the pole; the top frame including a central joint and a plurality of top rods; each top rod including two ends with one end pivoted to the central joint and another end penetrating through the sleeve pivoted to the locking joint at the upper end of the pole, wherein one of the foldable connection rod units includes two longer rods and two shorter rods; and the doorframe joints being fixed to the lower poles of the poles; each longer rod including an upper end, a middle section, and a lower end; each shorter rod including an upper end and a lower end; the longer rods being pivoted to each other at their upper ends; the lower ends of the shorter rods being pivoted to the middle sections of the longer rods; the upper ends of the shorter rods being the upper ends of the foldable connection rod unit; the lower ends of the longer rods being the lower ends of the foldable connection rod unit; the lower ends of the longer rods being pivoted to the door frame joints; wherein a threaded hole is provided at one end of each top rod for receiving a bolt to hold against the central joint; and the inclination between the top frame and the central joint being variable by rotating the bolts.