| 摘要 |
A mesh filter includes a filter unit connecting an outer peripheral surface of an inner cylinder and an inner peripheral surface of an outer cylinder. The inner cylinder, the outer cylinder, and the filter unit are integrally molded by injecting a thermoplastic resin into a cavity of a mold. A portion of the filter unit other than a connecting portion between the inner cylinder and the outer cylinder has square-shaped openings formed by vertical ribs formed equidistantly so as to be orthogonal to an X-axis and parallel to a Y-axis, and lateral ribs formed equidistantly so as to be orthogonal to the vertical ribs and parallel with the X-axis. The vertical ribs and the lateral ribs have rib widths (L2, L3) in a range from 0.07 to 0.1 mm and thicknesses (L4, L5) along a center axis of the inner cylinder in a range from 0.2 to 0.4 mm. |
| 主权项 |
1. A mesh filter used for filtering out foreign substances in fluid comprising:
an inner cylinder; an outer cylinder surrounding the inner cylinder; and a filter unit configured to connect an outer peripheral surface of the inner cylinder and an inner peripheral surface of the outer cylinder along a radial direction of the inner cylinder, assuming a virtual plane orthogonal to a center axis of the inner cylinder to be an X-Y plane, the filter unit is formed along the X-Y plane, a portion of the filter unit other than a connecting portion between the inner cylinder and the outer cylinder is provided with a plurality of square-shaped openings formed by a plurality of vertical ribs formed equidistantly so as to be orthogonal to an X-axis and in parallel to a Y-axis, and a plurality of lateral ribs formed equidistantly so as to be orthogonal to the vertical ribs and in parallel with the X-axis, rib widths, which are dimensions between adjacent openings of the vertical ribs and the lateral ribs fall within a range from 0.07 mm to 0.1 mm, and thicknesses, which are dimensions in a direction along the center axis of the inner cylinder, thereof fall within a range from 0.2 mm to 0.4 mm, and the inner cylinder, the outer cylinder, and the filter unit are molded integrally by injecting a thermoplastic resin in a melted state from a gate opening at a cavity portion of a cavity of the mold, which forms the inner cylinder, into the cavity portion. |
