Patent attributes
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 23 mounted to a first hinge arm 1 of a door hinge H, and a cam 20 formed on a second hinge arm 2 of the door hinge H. The cam 20 is provided with a first positioning recess 20a and a second positioning recess 20b in which a movable arm portion 23c of the torsion spring 23 is brought into engagement in the fully opened position F and the slightly opened position S of the door D, and a projection 20c disposed between the first and second positioning recesses 20a and 20b and adapted to apply a load to the movable arm portion 23c in accordance with the turning of the door D. The torsion spring 23 is capable of being mounted and demounted in a non-loaded state to and from the first hinge arm 1 in the fully opened position F of the door D.
