Patent ID: 8647004
Filing Date: 2014-02-11
Classification: A45D

Abstract:
1. An improved assembling structure of intermediate tube of lipstick, comprising a rotary base for assembling of lipstick and comprising an extending inner tube that is mounted to the rotary base, forms slide channels, and receives therein a holder for receiving and holding a lipstick and an intermediate tube structure that is fit outside the inner tube and comprises a metal intermediate tube and a plastic sleeve comprising internal spiral guide slots that are mutually fit to each other to integrate with each other, which are collectively assembled together to form a complete lipstick structure, characterized in that the plastic sleeve has a bottom ring that is expanded to form a circumferential step having an outside diameter substantially corresponding to outside diameters of the rotary base and the metal intermediate tube to allow a bottom end of the intermediate tube to be positioned on a top end of the step in a registered manner and a top circumferential surface of the rotary base to which the intermediate tube structure is assembled forms, at a location overlapping the circumferential step of the plastic sleeve of the intermediate tube structure, equally-divided circumferentially distributed elastic flange plates that are slightly raised to allow the bottom ring of the internally arranged plastic sleeve of the intermediate assembly to directly position on the flange plates to provide an assistance of elastic pushing and positioning in the assembling structure of the intermediate tube so that the plastic sleeve is biased to have a sidewall of each of the spiral guide slots in tight engagement with a corresponding peg of the lipstick holder for eliminating a play therebetween, wherein the circumferentially distributed elastic flange plates collectively define a circumference that has an outside diameter substantially corresponding to the outside diameter of the rotary base and the metal intermediate tube is prevented from directly contacting the rotary base and the flange plates by the circumferential step of the plastic sleeve.