Patent ID: 8979116
Filing Date: 2015-03-17
Classification: B62K

Abstract:
1. A retractable frame structure for baby trailer comprising: a bottom frame bar comprising opposing left and right frame bar portions disposed in a parallel manner, a plurality of positioning holes respectively located in the left and right frame bar portions of said bottom frame bar and spaced along the length thereof, a pivot holder located at one of the left and right frame bar portions of said bottom frame bar for the connection of one end of a tow bar; a base frame made of a rigid material and pivotally connected between two wheels, said base frame comprising two sliding holes arranged in parallel at opposing left and right sides thereof for receiving the left and right frame bar portions of said bottom frame bar respectively in such a manner that said bottom frame bar is movable in and out of the sliding holes of said base frame between a received position and an extended position, and first lock means for locking said bottom frame bar to said base frame; a top frame bar comprising opposing left and right frame bar portions, a plurality of second positioning holes located in the left and right frame bar portions of said top frame bar and spaced along the length thereof; and a backrest pivotally connected with a bottom side thereof to a rear side of said base frame and turnable relative to said base frame between a non-operative horizontal position and an operative vertical position, said backrest comprising two second sliding holes arranged in parallel at opposing left and right sides thereof for receiving the left and right frame bar portions of said top frame bar respectively in such a manner that said top frame bar is movable in and out of said second sliding holes of said backrest between a received position and an extended position, and second lock means for locking said top frame bar to said backrest.