Restrict mechanism that backrest fell and turned over dog -ear degree

The utility model discloses a restrict mechanism that backrest fell and turned over dog -ear degree, this mechanism includes fixing assembly, the assembly rotates, first connecting rod, the second connecting rod, a first sprin, the second spring, a pivot and a rotation constitution, it fixes on fixing assembly to rotate the piece, rotate total complete set on rotating the piece, it rotates for fixing assembly through rotating the piece to rotate the assembly, the pivot is fixed in on the fixing assembly, the first connecting rod in the outside overlaps in the pivot and about shaft rotation with inboard second connecting rod, first spring adjacent with the second spring and the cover in the pivot, the both ends difference first connecting rod of hook and the second connecting rod of first spring, the both ends difference hook fixing assembly and the second connecting rod of second spring. The utility model discloses can match and have fell function and make things convenient for the seat that the member got on