A wagon having improved convenience of use, the wagon comprising:
- a main frame (100) configured to have a structure in which each side of the main frame is formed in a “∧” shape to completely support a main body of the wagon and the main frame is configured to be folded or unfolded at intersection portions thereof through hinge structures such that a form of the main frame is variable, the main frame comprising:
- a bottom support frame (110), which is a trapezoidal frame which is laid horizontally and a front side of which is curved upwards, front wheel coupling portions being formed at left and right front ends of the bottom support frame, rotary coupling shafts being formed at middles of left and right sides of the bottom support frame so as to be axially coupled to a side support frame;
- a side support frame (120), which is formed in left-right symmetry and each side of which is formed in a “∧” shape, front and rear lower ends of the side support frame being axially coupled to the bottom support frame via the rotary coupling shafts, wherein rotary shaft frames, disposed at intersection portions located at an upper end of the side support frame, have hinge structures in order to support sides of a wagon frame;
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- a handle frame (130), which is a “[”-shaped frame inserted into a hollow outer frame so as to be fixed in a state in which a length thereof is variable, the rotary shaft frames of the side support frame being coupled to left and right lower ends of the handle frame,
- the side support frame (120) comprising:
- first side frames (121), each of which is a curved frame located at a front of the “∧” shaped side support frame, front lower ends of the first side frames being coupled to upper end rotary shafts of the front wheel coupling portions of the bottom support frame, rear upper ends of the first side frames being coupled to fixed shaft housings of the rotary shaft frames;
- second side frames (122), each of which is a curved frame having a dual structure located at a rear of the “∧” shaped side support frame, lower ends of the second side frames being coupled to the rotary coupling shafts of the bottom support frame, each of the second side frames comprising a second outer frame (122a), a middle of which is coupled to a second inner frame (122b) via a hinge structure, a lower end of the second inner frame is coupled to an inner middle of the second outer frame via a hinge structure and an upper end of the second inner frame is coupled to a corresponding one of rotary shaft housings of the rotary shaft frames;
- and
- the rotary shaft frames (123), each of which is a frame having a double cylindrical structure that is erected laterally, each of the rotary shaft frames being formed at a position at which an upper end of a corresponding one of the first side frames and an upper end of a corresponding one of the second side frames intersect each other, the rotary shaft frame configured to be rotated through a hinge structure, the rotary shaft frames being coupled to a seat frame inwards in order to fix the seat frame;
- the seat frame (200), which is a rectangular frame coupled to one side of an inner upper end of the main frame in a leftward-rightward direction, the seat frame being configured to support a wagon seat (201);
- a canopy frame (300) comprising a plurality of “[”-shaped frames configured to be rotated upwards and downwards about a plurality of rotary shafts formed in left-right symmetry in order to open and close an upper end of the infant wagon;
- and
- a wheel assembly (400) comprising front wheel driving assemblies (410) coupled to left and right sides of a front lower end of the main frame in a symmetrical fashions and a rear wheel driving assembly (420) coupled to left and right sides of a rear of the main frame, the wheel assembly being configured to drive the infant wagon while supporting the infant wagon, wherein
- each of the rotary shaft frames (123) comprises:
- the rotary shaft housing (123a), which is an outer frame of the cylindrical structure that is erected laterally, an inner surface of the rotary shaft housing being axially coupled to the fixed shaft housing so as to be rotated in an upward-downward direction;
- a coupling pin rotation guide plate (123b), which is a pie-shaped plate empty at one side thereof, including a coupling pin movement hole configured to guide fixation and rotation of a coupling pin;
- a coupling pin movement guide plate (123c), a front part of which is formed in a round shape and a rear part of which is formed in a rectangular shape, the coupling pin movement guide plate being inserted into a coupling pin support frame, the coupling pin movement guide plate being provided in one side of a middle thereof with a coupling pin guide hole, which is a longitudinal hole, in a longitudinal direction;
- a coupling pin frame (123d), which is a rectangular frame having a protruding pin (123d-1) protruding therefrom in the leftward-rightward direction, the coupling pin frame being connected to a wire so as to be moved upwards and downwards in the longitudinal direction and to be rotated;
- a coupling pin support frame (123e), a front part of which is formed in a cylindrical shape that is erected laterally, a front part of the coupling pin support frame being received in the rotary shaft housing, a rear part of the coupling pin support frame being a rectangular frame, the coupling pin support frame being provided in one side of an inside thereof with a coupling pin frame insertion recess, which is a longitudinal hole, in the longitudinal direction;
- and
- the fixed shaft housing (123f), which is an inner frame of the cylindrical structure that is erected laterally, an outer surface of the fixed shaft housing being axially coupled to the rotary shaft housing in order to support axial rotation of the rotary shaft housing.