Patent ID: 8028598

Claim:
An injection-molded gear in which a plurality of pin point gates open on a section within a cavity forming a roughly disk-shaped web, molten resin injected into the cavity from the plurality of pin point gates flow within the cavity in an outward radial direction, and a teeth section is formed on an outer circumference of the web, wherein: resin flow regulating projections that partially thicken the web are formed on a side surface side of the web so as to project therefrom and evenly spaced along a circumferential direction between each of the pin point gates and the teeth section; and each of the resin flow regulating projections is formed such that a center section thereof is positioned on a radial direction line extending from the pin point gate in the outward radial direction, that a height at the center section thereof is the highest, and that the height thereof decreases away from a position on the radial direction line in a circumferential direction of the web and becomes at both ends thereof the same as the side surface of the web.