US 11,554,526 B2Granted

Resin parts and manufacturing method of resin parts

AssigneeToyota Shatai Kabushiki Kaisha

InventorRina Suzuki

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Abstract

A resin part, wherein the resin part has an asymmetrical shape in a thickness direction, so that a portion in which an increase in internal temperature by heating is relatively quick is positioned closer to one end of the resin part in the thickness direction while a portion in which an increase in internal temperature by heating is relatively slow is positioned closer to the other end of the resin part in the thickness direction, wherein the resin part has an asymmetrical shape in a width direction, so that the portion in which the increase in internal temperature by heating is relatively quick is positioned closer to one end of the resin part in the width direction while a portion in which an increase in internal temperature by heating is relatively slow is positioned closer to the other end of the resin part in the width direction.

Claims9

Dependent claims

A pure solid resin part that is made of resin only and is configured such that its length is larger than its width, the resin part having a linear band plate shape and being configured to be directly helically deformed by heating so as to form a helical shape,

wherein the solid resin part before being helically deformed has an asymmetrical shape in a thickness direction, and in a width direction, such that a solid thickened portion is formed thereon,
wherein the solid resin part before being helically deformed is configured such that the thickened portion longitudinally extends along one end of the resin part in the width direction,
wherein a ratio of the width of the thickened portion to the width of the resin part before being helically deformed is about 0.3 to 0.5, and
wherein a ratio of a thickness of the thickened portion to a thickness of the resin part before being helically deformed is about 2.0 to 3.0.

1 more element

Dependencies are inferred from the claim text.

Facts

Application: 15/580,493Filed 13 Feb 2017
Priority: JP JP2016-06591129 Mar 2016
Published: US 2019/0009446 A110 Jan 2019
Granted: 17 Jan 2023
Term ends: Not estimatedThe source records don’t support an estimate.

Classification14 codes

B29C 48/12
Characterised by the shape of the extruded material at extrusion: articles with an irregular circumference when viewed in cross-section, e.g.…
B29C 45/37
Moulds: mould cavity walls , i.e. the inner surface forming the mould cavity, e.g. linings
B29C 61/025
Thermal shrinking: for the production of hollow or tubular articles
B29C 61/0608
Making preforms having internal stresses, e.g. plastic memory: characterised by the configuration or structure of the preforms