Abstract: A cheek link apparatus includes an arm in which a stopper portion is formed by covering a stopper core portion with a resin material and a holding member which defines a full open position of a door by being brought into abutment with the stopper portion. The stopper core portion has curved surfaces on end faces which face an abutment surface of the holding member at least when the abutment surface of the holding member is brought into abutment with the stopper portion. The stopper core position is positioned such that extensions extending in a direction in which a load is applied to the stopper core portion by the holding member pass the curved surfaces.

Abstract: A cheek link apparatus includes an arm in which a stopper portion is formed by covering a stopper core portion with a resin material and a holding member which defines a full open position of a door by being brought into abutment with the stopper portion. The stopper core portion has curved surfaces on end faces which face an abutment surface of the holding member at least when the abutment surface of the holding member is brought into abutment with the stopper portion. The stopper core position is positioned such that extensions extending in a direction in which a load is applied to the stopper core portion by the holding member pass the curved surfaces.

Abstract: A door check link apparatus includes a check link formed by molding a synthetic resin on a surface of a core plate, and including a full open stopper including a projecting portion located at a tip end portion of the core plate, and having a width larger than a width of a detent surface, a bending piece formed at a first end portion of the projecting portion, and having a stopper surface confronting the stopper receiving surface, and a protruding portion formed on the projecting portion at a position farther apart from the stopper receiving surface relative to the stopper surface, and protruding in a direction substantially parallel to the stopper receiving surface, the full open stopper being formed by molding the synthetic resin on the tip end portion of the core plate including the projecting portion, the bending piece, and the protruding portion.

Abstract: A door check link apparatus includes a check link formed by molding a synthetic resin on a surface of a core plate, and including a full open stopper including a projecting portion located at a tip end portion of the core plate, and having a width larger than a width of a detent surface, a bending piece formed at a first end portion of the projecting portion, and having a stopper surface confronting the stopper receiving surface, and a protruding portion formed on the projecting portion at a position farther apart from the stopper receiving surface relative to the stopper surface, and protruding in a direction substantially parallel to the stopper receiving surface, the full open stopper being formed by molding the synthetic resin on the tip end portion of the core plate including the projecting portion, the bending piece, and the protruding portion.

Abstract: A door checker unit of a motor vehicle comprises a check link including a base end connected to a vehicle body, an elongate portion that extends from the base end and is formed with a waved detent portion and a head-like stopper that is integrally formed on a leading end of the elongate portion; and a check box connected to a vehicle door, the check box including upper and lower press shoes for putting therebetween the check link, each of the upper and lower press shoes having a projected guide wall, wherein the waved detent portion has upper and lower waved detent surfaces provided on the check link, the guide walls of the press shoes put therebetween the check link; and a width of the base end is substantially the same as that of the waved detent portion of the check link.