Method for forming an armrest
First Claim
1. A method for forming an armrest, comprising the steps of:
- providing a frame;
providing a shaft independently of said frame;
said frame and shaft including a connecting means for connecting said shaft to said frame at a predetermined position;
providing a preformed three-dimensional trim cover assembly of closed box-like type which includes one cover section having an opening means formed therein and a pair of lateral cover sections, wherein a pair of through-holes is formed, with one through-hole in each lateral cover section;
inserting said frame through said opening means into an inside of said trim cover assembly;
thereafter, inserting one end of said shaft into one of said pair of through-holes of said trim cover assembly;
manipulating said shaft via said connecting means so as to connect the shaft to said frame at the predetermined position within said trim cover assembly;
then, exposing said one end of said shaft outwardly from another of said pair of through-holes of said trim cover assembly, to thereby mount said frame and shaft within said trim cover assembly, whereby an incomplete unit of armrest is formed;
thereafter, placing said incomplete unit of armrest in a foaming die;
injecting a base foaming material in liquid into the inside of said trim cover assembly placed in said foaming die;
andsubjecting said incomplete unit of armrest to foaming in said foaming die so as to create a foam cushion member in said trim cover assembly, thereby forming a complete armrest with said both ends of said shaft projecting from lateral sides thereof.
1 Assignment
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Accused Products
Abstract
A method for forming an armrest, wherein there are provided a three-dimensional box-like trim cover assembly having slit and hole formed therein, a frame and a shaft separate from the frame. In the method, the frame is inserted through the slit into the inside of the trim cover assembly, and then, the shaft is inserted through the hole into the same inside of trim cover assembly, so that the shaft is connected to the frame at a predetermined position within the trim cover assembly via a connecting element. Thereafter, such incomplete armrest unit is subject to foaming in a foaming die, to thereby form a complete armrest. The trim cover assembly includes a high-density foam layer and an impregnation preventive film having plural ventilation holes formed therein in order to prevent impregnation of liquid foaming material into a foam wadding layer of trim cover assembly and attain air permeability of armrest.
34 Citations
11 Claims
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1. A method for forming an armrest, comprising the steps of:
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providing a frame; providing a shaft independently of said frame; said frame and shaft including a connecting means for connecting said shaft to said frame at a predetermined position; providing a preformed three-dimensional trim cover assembly of closed box-like type which includes one cover section having an opening means formed therein and a pair of lateral cover sections, wherein a pair of through-holes is formed, with one through-hole in each lateral cover section; inserting said frame through said opening means into an inside of said trim cover assembly; thereafter, inserting one end of said shaft into one of said pair of through-holes of said trim cover assembly; manipulating said shaft via said connecting means so as to connect the shaft to said frame at the predetermined position within said trim cover assembly; then, exposing said one end of said shaft outwardly from another of said pair of through-holes of said trim cover assembly, to thereby mount said frame and shaft within said trim cover assembly, whereby an incomplete unit of armrest is formed; thereafter, placing said incomplete unit of armrest in a foaming die; injecting a base foaming material in liquid into the inside of said trim cover assembly placed in said foaming die; and subjecting said incomplete unit of armrest to foaming in said foaming die so as to create a foam cushion member in said trim cover assembly, thereby forming a complete armrest with said both ends of said shaft projecting from lateral sides thereof. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification