Mesh filter

Patent metadata

Field	Value
Publication number	US-2016199758-A1
Application number	US-201414912712-A
Country	US
Kind code	A1
Filing date	Jul 14, 2014
Priority date	Aug 20, 2013
Publication date	Jul 14, 2016
Grant date	—

Abstract

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 (L 2, L 3 ) in a range from 0.07 to 0.1 mm and thicknesses (L 4, L 5 ) along a center axis of the inner cylinder in a range from 0.2 to 0.4 mm.

First claim

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.

2 . A mesh filter used for filtering out foreign substances in fluid comprising:
a cylindrical inner cylinder; a cylindrical outer cylinder being concentric with 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, the opening is a regular tetragon, 0.1 mm on a side, rib widths, which are dimensions between adjacent openings of the vertical ribs and the lateral ribs are 0.1 mm, and thicknesses, which are dimensions in a direction along the center axis of the inner cylinder, thereof are 0.3 mm, and the inner cylinder, the outer cylinder, and the filter unit are molded integrally by injecting 66 nylon in a melted state from a gate opening at a cavity portion of a cavity of a mold, which forms the inner cylinder, into the cavity portion.

3 . The mesh filter according to claim 1 , comprising a center-side filter unit extending from a center axis of the inner cylinder to an inner peripheral surface of the inner cylinder,
assuming a virtual plane orthogonal to a center axis of the inner cylinder to be an X-Y plane, the center-side filter unit is formed along the X-Y plane, a portion of the center-side filter unit other than a connecting portion with respect to the inner 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, the filter unit, and the center-side 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 a mold, which forms the inner cylinder, into the cavity portion.

Assignees

• Enplas Corp

Inventors

• Suzuki Akihiro

Classifications

• B01D39/083

  of organic material · CPC title

• B29L2031/14

  Filters {(optical filters B29L2011/0066, sieves or screens B29L2031/737)} · CPC title

• B29L2031/737

  Articles provided with holes, e.g. grids, sieves (nets B29L2028/00) · CPC title

• B29C45/16

  Making multilayered or multicoloured articles {(B29C45/0062 takes precedence; feeding colouring materials into the injection unit B29C45/1816)} · CPC title

• B29C45/2628

  with mould parts forming holes in or through the moulded article, e.g. for bearing cages · CPC title