Door retention device used in process of manufacturing automobile

a b c c a b c In order to ensure that a door can be retained at least in a fully opened position and a slightly opened position by the combination of a smaller number of exclusive parts with a hinge connecting a body and a door in a door retention device used in a process of manufacturing an automobile, the door retention device includes a torsion spring mounted to a first hinge arm of a door hinge H, and a cam formed on a second hinge arm of the door hinge H. The cam is provided with a first positioning recess and a second positioning recess in which a movable arm portion of the torsion spring is brought into engagement in the fully opened position F and the slightly opened position S of the door D, and a projection disposed between the first and second positioning recesses and and adapted to apply a load to the movable arm portion in accordance with the turning of the door D. The torsion spring is capable of being mounted and demounted in a non-loaded state to and from the first hinge arm in the fully opened position F of the door D.