Trailer frame and combined trailer
A trailer frame and a combined trailer are provided. The trailer frame includes a bottom frame, a snap-fit rod, and a pair of brackets. The pair of brackets are correspondingly provided on both sides of the bottom frame. Two free ends of each of the brackets are correspondingly hinged to the bottom frame, so that the brackets can flip toward an inner side of a top surface of the bottom frame. A hinged end of the snap-fit rod is hinged to the bracket on the identical side. A snap-fit end of the snap-fit rod engages with or disengages from the bracket on the opposite side, and the snap-fit end of the snap-fit rod is further configured to flip toward the plane where the bracket is located. The effective cooperation integrates the reduced occupied height in the stored state and the limiting stability in the use state.
1 . A trailer frame, wherein the trailer frame comprises a bottom frame, a snap-fit rod, and a pair of brackets;
the pair of brackets are correspondingly provided on both sides of the bottom frame; and two free ends of each of the pair of brackets are correspondingly hinged to the bottom frame, so that the pair of brackets are configured to flip toward an inner side of a top surface of the bottom frame; and
a hinged end of the snap-fit rod is hinged to a bracket on an identical side; a snap-fit end of the snap-fit rod is configured to engage with or disengage from a bracket on an opposite side, and the snap-fit end of the snap-fit rod is further configured to flip toward a plane where the bracket is located.
2 . The trailer frame according to claim 1 , wherein the trailer frame comprises a use state;
in the use state, the snap-fit end of the snap-fit rod engages with the bracket on the opposite side, so that the top surface of the bottom frame, the snap-fit rod, and the pair of brackets enclose a storage space.
3 . The trailer frame according to claim 1 , wherein the trailer frame comprises a folded state;
in the folded state, the snap-fit end of the snap-fit rod disengages from the bracket on the opposite side, the snap-fit rod flips toward the bracket on the identical side, and the pair of brackets flip toward the inner side of the top surface of the bottom frame, so that the bracket and/or the snap-fit rod correspondingly abut against the top surface of the bottom frame; and
the trailer frame is configured to switch between the folded state and a use state.
4 . The trailer frame according to claim 1 , wherein each of the pair of brackets is constructed as a U-shaped bracket; and
the hinged end of the snap-fit rod is hinged to a corner of the bracket on the identical side, and the snap-fit end of the snap-fit rod is configured to engage with or disengage from a corner of the bracket on the opposite side.
5 . The trailer frame according to claim 4 , wherein the snap-fit end of the snap-fit rod engages with a snap-fit cylinder, and the snap-fit cylinder is provided at the corner of the bracket on the opposite side;
the snap-fit end of the snap-fit rod is constructed as a clamping block, and the snap-fit cylinder is correspondingly provided with a clamping block slot matched with the clamping block; and
the snap-fit rod is configured to rotate around the hinged end, so that the clamping block engages with or disengages from the clamping block slot.
6 . The trailer frame according to claim 5 , wherein the clamping block and the clamping block slot are correspondingly constructed as a T-shaped clamping block and a T-shaped clamping block slot.
7 . The trailer frame according to claim 5 , wherein each of the pair of brackets comprises a main bracket, a pair of auxiliary brackets, and a pair of dual-passage sleeves; and
the pair of dual-passage sleeves are provided at two corners of each of the pair of brackets in one-to-one correspondence; and the main bracket and the pair of auxiliary brackets are connected through the pair of dual-passage sleeves.
8 . The trailer frame according to claim 7 , wherein the hinged end of the snap-fit rod is hinged with a hinge cylinder, and the hinge cylinder is provided at the corner of the bracket on the identical side; and
each of the pair of dual-passage sleeves is provided with a plurality of connecting cylinders, and one of the plurality of connecting cylinders is correspondingly detachably connected to the snap-fit cylinder or the hinge cylinder.
9 . The trailer frame according to claim 8 , wherein the snap-fit cylinder and/or the hinge cylinder are configured to flip onto the top surface of the bottom frame.
10 . The trailer frame according to claim 1 , wherein a plurality of second hinge cylinders ( 11 ) are provided on the top surface of the bottom frame; and
the plurality of second hinge cylinders are hinged with free ends of each of the pair of brackets.
11 . The trailer frame according to claim 10 , wherein a sum of height sizes of the pair of brackets is less than or equal to a distance between second hinge cylinders on an identical side of the pair of brackets.
12 . The trailer frame according to claim 1 , wherein the top surface of the bottom frame is constructed as a support surface; and
the support surface, the pair of brackets, and a pair of snap-fit rods are configured to enclose a cuboid frame.
13 . The trailer frame according to claim 1 , wherein at least one pair of universal wheels are detachably provided at a bottom of the bottom frame.
14 . A combined trailer, wherein the combined trailer comprises the trailer frame according to claim 1 .
15 . The combined trailer according to claim 14 , wherein the combined trailer further comprises a pet carrier bag; and the bottom frame, the snap-fit rod, and the pair of brackets cover an outer side of the pet carrier bag.
16 . The combined trailer according to claim 14 , wherein the combined trailer further comprises a folding armrest; and
the folding armrest is mounted on the bottom frame, and the folding armrest is configured to rotate from a vertically upward posture to a bottom of the bottom frame.
17 . The combined trailer according to claim 16 , wherein the folding armrest comprises an armrest, a snap-fit component, and an adapter;
a first end of the snap-fit component is connected to the armrest, and a second end of the snap-fit component is hinged to the adapter; the adapter has a rotational space, wherein the snap-fit component rotates in the rotational space, and a limiting corner is provided within the rotational space; and the snap-fit component is provided with a clamping strip corresponding to the limiting corner; and
during rotation of the snap-fit component around a hinge point of the snap-fit component, the following sequence occurs:
the clamping strip abuts against and is limited by the limiting corner, and the armrest is in a suspended position; and
the clamping strip slides against the limiting corner and passes over an apex of the limiting corner, and the armrest enters a folded state.
18 . The combined trailer according to claim 17 , wherein the folding armrest comprises a first use state and a second use state, and the rotational space comprises a first preset angle and a second preset angle;
in the first use state, the snap-fit component engages with the adapter, the adapter is perpendicular to the armrest, and a rotational angle of the snap-fit component from engaging with the adapter to disengaging from the adapter is the first preset angle; and
in the second use state, the snap-fit component disengages from the adapter, the snap-fit component is configured to rotate around the hinge point of the snap-fit component until the clamping strip abuts against and is limited by the limiting corner, wherein a rotational angle of the snap-fit component is the second preset angle.
19 . The combined trailer according to claim 17 , wherein the folding armrest further comprises a switching state, and the rotational space further comprises a third preset angle; and
in the switching state, the snap-fit component is configured to rotate around the hinge point of the snap-fit component, while the clamping strip slides against the limiting corner through an interference fit, and a rotational angle of the snap-fit component from abutting to disengagement of the clamping strip and the limiting corner is the third preset angle.
20 . The combined trailer according to claim 17 , wherein the folding armrest further comprises a stored state, and the rotational space further comprises a fourth preset angle; and
in the stored state, the armrest is in the folded state; after the clamping strip disengages from the limiting corner, the clamping strip rotates around a hinge point of the clamping strip until the snap-fit component rotates to under a bottom surface of the adapter, wherein a rotational angle of the snap-fit component is the fourth preset angle.