| 摘要 |
<p>An injection-molded resin face gear (1) includes a boss (3), a disk-shaped web (4), and a teeth section (5). The boss (3) has an axis hole (2). The web (4) is formed on an outer circumferential side of the boss in an outward radial direction. The teeth section (5) is formed on an outer circumferential edge of the web (4). The teeth section (5) includes a cylindrical section (13), a disk-shaped section (14), and a plurality of teeth (15). The cylindrical section (13) is connected to the outer circumferential edge of the web (4). The disk-shaped section (14) is formed on one end side of the cylindrical section (13) in the outward radial direction. The outer circumferential edge of the web (4) is connected between an end surface (19) and an end surface (22) of the cylindrical section (13), in almost the center in a direction along a rotational center axis (CL).</p> |
