Patent ID: 11891100
Assignee: GREEN PLUS CO., LTD.
Field: Transport (Mechanical engineering)
Classification: CPC B  Y | IPC B

Claim 9:
10. The foldable lightweight roll container of claim 1, wherein the left and right door hinge members (400) is configured to include:
a first hinge portion (401) including a first hinge plate body (411) coupled and fixed to the fastening groove portion (111) of the border portion (110), a first hinge piece (412) perpendicularly extended to a left end side of a front surface of the first hinge plate body (411), and first upper, middle, and lower bearing portions (413, 414, 415) extended to be separated on a front end of the first hinge piece (412) at an equal interval, and having plane cross section in a L-shaped form with a C-shaped hook at an end of a horizontal leg of the L-shape;
a second hinge portion (402) including a second hinge plate body (421) coupled and fixed to the fastening groove portion (111), a second hinge piece (422) extended to a front end side of an outer surface of the second hinge plate body (421) to be perpendicular with same vertical length and extension width as the first hinge piece (412), and a second upper bearing portion (423) and a second lower bearing portion (424) of which each lower end is supported on top ends of the first middle bearing portion (414) and the first lower bearing portion (415) and each upper end is supported on lower end of each of the first middle bearing portion (414) and the first upper bearing portion (413), and having plane cross section in a L-shaped form with a C-shaped hook at an end of a horizontal leg of the L-shape; and
a door hinge shaft (403) axially coupling the first upper, middle, and lower bearing portions (413, 414, 415) and the second upper and lower bearing portions (423, 424) to be vertically matched.