Integrated vehicle rack

1 . An integrated vehicle rack, including a plastic wheel support, a flip locking device for flipping the plastic wheel support, and a square-mouth connecting device for connecting to an external vehicle, and the plastic wheel support and the square-mouth connecting device both connected to a bottom of the flip locking device;

wherein the flip locking device comprises a lower bracket, an upper bracket, a flip structure and a locking structure; wherein one end of the upper bracket is hinged to one end of the lower bracket through the flip structure, the locking structure comprises a latch and a locking member, the latch is provided through two ends of the upper bracket, the locking member is arranged at one end of the upper bracket, the locking member is provided with a first locking hole for the latch to be inserted, the latch is provided with a first limiting column, one end of the upper bracket is movably connected to a driving frame, a top of the driving frame is provided with a movable groove for the latch to move, both sides of the driving frame are provided with a through limiting waist hole for the first limiting column to be movably connected, a driving part is formed at a bottom of the driving frame, so as to enable the first limiting column to drive the latch to move telescopically in the length direction, and the upper bracket and the lower bracket can be locked or unlocked by the cooperation of the latch and the first locking hole, the driving part comprising two bending plates, the driving frame and the driving part being in an L-shaped structure, a foot-operated part being provided between the two bending plates;

wherein the square-mouth connecting device comprises a square-mouth tube and a connecting device; wherein a second locking hole is provided at a diagonal of the square-mouth tube, the connecting device comprises an connecting tube, a mounting bracket and a locking mechanism, one end of the connecting tube is connected to the mounting bracket, the other end of the connecting tube is provided with a moving square hole, the locking mechanism comprises a first expansion block, a second expansion block and a driving rod, the first expansion block is provided with a first inclined plane, the second expansion block is provided with a second inclined plane and a locking part, the first inclined plane and the second inclined plane are fitted with each other, the first expansion block is slidably connected in the connecting tube and is rotatably connected to the driving rod, the mounting bracket is provided with a driving nut for threading the driving rod to drive the locking part to be telescopically moved in the moving square hole, the portion of the locking part exposed from the moving square hole is provided with a horizontal plane and a vertical plane perpendicular to each other, both the horizontal plane and the vertical plane are contacted with the inner wall of the square-mouth tube, the inner wall of the second locking hole is symmetrically provided with two locking plates, and opposite sides of the two locking plates are contacted with the locking part.

2 . The integrated vehicle rack according to claim 1 , wherein the flip structure includes two first hinges and two second hinges, the two first hinges are respectively fixed to two sides of one end of the upper bracket by bolts, the first hinges are hinged to one end of the lower bracket, each of the second hinge includes a connecting part and a moving part, the two connecting parts are hinged to a middle part of the upper bracket and are symmetrically arranged, the middle part of the lower bracket is symmetrically arranged with two moving members, and each of the moving members is provided with a moving groove for the sliding connection of the moving member along the length direction.

3 . The integrated vehicle rack according to claim 1 , wherein a mounting support and a rotating shaft are provided at one end of the upper bracket, the latch is provided on the mounting support, a first rotating hole is provided below the limiting waist hole of the driving frame, a second rotating hole is penetrated through the bottom of the mounting support, and the rotating shaft is rotatably connected to the first rotating hole and the second rotating hole; and the locking structure further includes a holding mechanism, which acts between the first limiting column and the mounting support, in order to make the latch extend outward from the other end of the upper bracket and be inserted into the locking hole; the said holding mechanism is a spring member and is sleeved on the latch, a first contact ring is sleeved at the latch corresponding to the first limiting column and the mounting support, and two ends of the holding mechanism are respectively contacted with the mounting bracket and the first contact ring.

4 . The integrated vehicle rack according to claim 1 , wherein the first inclined plane and the second inclined plane are parallel to a diagonal line of the moving square hole corresponding to the inner cavity section of the square-mouth tube, the connecting tube is a square tube structure, the moving square hole is provided at any diagonal position of the inner wall of the connecting tube, the other diagonal position of the inner wall of the connecting tube relative to the moving square hole is in contact with the first expansion block, the inner wall of the moving square hole is provided with two guide plates, and two sides of the locking part are respectively in contact with the two guide plates.

5 . The integrated vehicle rack according to claim 1 , wherein the first expansion block is provided with a third rotating hole for the rotatably connection of the driving rod, two limiting members are provided at two openings of the third rotating hole corresponding to the driving rod, a mounting groove is provided on a side wall of the first expansion block away from the mounting bracket, the mounting groove is connected with the rotating hole, each of the limiting members is provided with a gasket sleeved on the driving rod, the two gaskets are respectively in contact with the side wall of the second expansion block and the inner groove wall of the mounting groove, and the outer diameter of the gasket is larger than the inner diameter of the third rotating hole.