| 摘要 |
A filter unit connecting a gate connection part to an outer cylinder includes a plurality of longitudinal ribs formed at regular intervals orthogonally to an X axis and parallel to a Y axis when a virtual plane orthogonal to a central axis of the gate connection part is assumed to be an X-Y plane. A plurality of transverse ribs is formed at regular intervals orthogonally to the longitudinal ribs and parallel to the X axis, and a plurality of rectangular openings is formed between the longitudinal ribs and the transverse ribs. By injecting molten resin into a cavity from a gate opened toward a cavity portion forming the gate connection part, the gate connection part, the outer cylinder, and the filter unit are formed integrally, the rib widths of the longitudinal ribs and the transverse ribs are made constant, and the shapes of the plurality of openings are made identical. |
| 主权项 |
1. A mesh filter filtering out foreign matter in fluid, comprising:
a gate connection part in which a gate for injection molding is disposed; an outer cylinder surrounding the gate connection part; and a filter unit connecting an outer peripheral surface of the gate connection part to an inner peripheral surface of the outer cylinder along a radial direction of the gate connection part; wherein, when a virtual plane orthogonal to a central axis of the gate connection part is assumed to be an X-Y plane, the filter unit is formed along the X-Y plane, the filter unit except a connection portion connecting to the gate connection part and a connection portion connecting to the outer cylinder includes a plurality of longitudinal ribs formed at regular intervals parallel to each other along the X-Y plane, a plurality of transverse ribs formed at regular intervals parallel to each other along the X-Y plane, the plurality of transverse ribs crossing the plurality of longitudinal ribs, and a plurality of openings formed between the plurality of longitudinal ribs and the plurality of transverse ribs, and molten resin is injected from a gate opened toward a cavity portion shaping the gate connection part of a cavity of a metal mold into the cavity portion to form the gate connection part, the outer cylinder, and the filter unit integrally, make rib widths of the longitudinal ribs and the transverse ribs constant, and make shapes of the openings identical. |
