Back skeleton behind split type car seat and middle pivot anticreep mechanism thereof

The utility model discloses a back skeleton behind split type car seat and middle pivot anticreep mechanism thereof, middle pivot anticreep mechanism includes: first, second pivot support, middle pivot, first end and first pivot leg joint, the second end is equipped with the tapered end, is equipped with first mounting hole on the second pivot support, the hinge bracket is located between first pivot support and the second pivot support, and the bottom of hinge bracket is equipped with the connection base, has seted up the second mounting hole on the hinge bracket, anti -escape plate, locate second pivot support in, anti -escape plate is last to be seted up and supplies the tapered end to wear to establish and wear to establish the lockhole of back through rotating right side skeleton restriction tapered end and breaking away from anti -escape plate at the tapered end. The utility model discloses a set up the first pivot support of the middle pivot in area on the skeleton of left side, set up the second pivot support of taking anti -escape plate on the skeleton of right side, set up the tapered end in middle pivot, set up the lockhole on anti -escape plate, pin the tapered end, can avoid right side frame to break away from middle pivot under the exogenic action.