Method for manufacturing a wiring component
A wiring component is provided with a plurality of electric wires, and a holding portion that batch holds respective portions of the plurality of electric wires. The holding portion includes a holder that supports the plurality of electric wires in a predetermined positional relationship, and a resin mold portion composed of resin molded to cover the holder and the respective portions of the plurality of electric wires. The holder includes a substrate portion and a plurality of wire-holding portions formed protruding from the substrate portion. The plurality of electric wires are supported by the plurality of wire-holding portions, respectively. A notch or a through-hole is formed in the substrate portion corresponding to a portion into which molten resin is injected when forming the resin mold portion.
1 . A method for manufacturing a wiring component including a plurality of electric wires and a holding portion including a holder supporting the plurality of electric wires in a predetermined positional relationship and molded with resin covering respective portions of the plurality of electric wires, the method comprising:
a placement step for placing the plurality of electric wires and the holder in a cavity of a mold; and
a molding step for injecting molten resin into the cavity to perform the molding,
wherein the holder including a substrate portion and a plurality of wire-holding portions formed protruding from the substrate portion and formed with a notch or a through-hole in the substrate portion is used as the holder,
wherein the plurality of electric wires are supported by the plurality of wire-holding portions in the placement step, and the molten resin is injected toward a portion where the notch or the through-hole is formed in the molding step.
2 . The method, according to claim 1 , wherein a gate that serves as an entrance of the molten resin into the cavity and a flow path that guides the molten resin to the gate are formed in the mold, and wherein an extension in a direction of flow of the molten resin passing through a center of the gate does not intersect the substrate portion.
3 . The method, according to claim 2 , wherein the molten resin is injected into the cavity in the molding step from the gate in a direction perpendicular to the substrate portion and when viewed at the substrate portion from a gate side along the direction perpendicular to the substrate portion, a peripheral edge of a tip end of the gate does not intersect the substrate portion.
4 . The method, according to claim 3 , wherein the tip end of the gate is circular and the notch is formed in a partial circular shape with a diameter larger than a diameter of the tip end of the gate.
5 . The method, according to claim 1 , wherein some wires of the plurality of electric wires are placed on one face-side of the substrate portion, and wherein some other wires of the plurality of electric wires are placed on an other face-side of the substrate portion, and the molten resin flows from the one face-side to the other face-side through the notch or the through-hole in the molding step.
6 . The method, according claim 1 , wherein the plurality of electric wires are bent in a thickness direction of the substrate portion within the cavity, and wherein the notch is located at an end of the substrate portion on a side opposite to bending portions where the plurality of electric wires are bent.