Patent ID: 11945656
Assignee: SUPERBIN CO., LTD.
Field: Civil engineering (Other fields)
Classification: CPC B  F  E | IPC B

Claim 5:
6. An object collection apparatus having a door assembly, comprising:
a conveyance unit configured to form a path through which an object moves;
a tunnel unit formed at an upper part of the conveyance unit to surround at least a part of the conveyance unit; and
a plurality of door assemblies each of which is disposed at an inlet and an outlet of the tunnel unit to open and close the inlet and outlet of the tunnel unit,
wherein the door assembly comprises:
a guide frame unit including a first guide track and a second guide track spaced apart from and disposed in parallel with the first guide track;
an inner door disposed to be upwardly and downwardly movable along the first guide track and provided with a first locking part protruding in a first direction at a lower end;
an outer door disposed to be upwardly and downwardly movable along the second guide track and provided with a second locking part protruding in a second direction from above a point at which the first locking part is formed; and
a drive unit configured to move the inner door upwardly and downwardly, and
wherein the second locking part is formed to contact the first locking part as the inner door moves upwardly, and
wherein the first direction is a direction from the inner door to the outer door, and the second direction is a direction from the outer door to the inner door.