Patent ID: 9456580
Filing Date: 2016-10-04
CPC Classification: A01K

Claim Text:
1. A foldable bag frame, comprising four top support bars connected end-to-end in sequence and four bottom support bars connected end-to-end in sequence, wherein neighboring top support bars are at an angle of 90°, the four top support bars form a rectangular top portion, top-support-bar connection joints are formed at the four vertices of the rectangular top portion, neighboring bottom support bars are at an angle of 90°, the four bottom support bars form a rectangular bottom portion, bottom-support-bar connection joints are formed at the four vertices of the rectangular bottom portion, upper-end connection protrusions are formed at the bottom of the top-support-bar connection joints, lower-end connection protrusions are correspondingly formed at the top of the bottom-support-bar connection joints, the upper-end connection protrusions and the lower-end connection protrusions each have a connecting-rod mounting groove correspondingly formed therein, and a shaft hole is correspondingly formed on a side wall of the mounting groove; further comprising connecting rods, wherein each of the connecting rods consists of two hingedly-connected short-segment connecting rods, the non-fixed end of each of the short-segment connecting rods protrudes to form a mounting protrusion that matches the connecting-rod mounting groove, a pin shaft mounting hole is formed on the mounting protrusion, the mounting protrusion is inserted into the mounting groove, and the connecting rod is separately fixed to the top support bar and the bottom support bar by means of a pin shaft; and further comprising a sleeve slidable along the connecting rod, and a spring fixedly connected to one end of the sleeve and sleeved over an outer side of the connecting rod, the other end of the spring being fixed to the non-fixed end of a short-segment connecting rod, wherein when the spring is in an initial state, the sleeve connected thereto covers the hinged portion of the connecting rod.