Insert nut, fastening unit including the insert nut, and process cartridge using the fastening unit
An insert nut (1), which is configured to be inserted into a substrate made of a resin (55), the insert nut (1) including: an internal thread portion (5) into which a screw is to be fastened; a recess-and-protrusion-shaped portion (6,11) formed on an outer surface of the insert nut (1), the recess-a...
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Format: | Patent |
Sprache: | eng ; fre ; ger |
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Zusammenfassung: | An insert nut (1), which is configured to be inserted into a substrate made of a resin (55), the insert nut (1) including: an internal thread portion (5) into which a screw is to be fastened; a recess-and-protrusion-shaped portion (6,11) formed on an outer surface of the insert nut (1), the recess-and-protrusion-shaped portion (6,11) including a plurality of ridges (6a,11a) and a plurality of roots (6b,11b) formed alternately in a circumferential direction; and a flange portion (3) formed on one end side in a screw axial direction of the internal thread portion (5), wherein a nominal diameter of the screw to be fastened into the insert nut (1) is 3 mm or more, and an outer diameter of the flange portion (3) is 2.4 times or more and 4 times or less as large as the nominal diameter of the screw to be fastened into the insert nut (1). |
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