Method for manufacturing headrest stay
First Claim
1. A method for manufacturing a headrest stay including an embedded portion to be embedded into a headrest main body, and inserted portions to be inserted into a top portion of a seat back integrally made of a metal pipe in one piece unit, comprising the steps of:
- cutting a linear-shaped metal pipe material into a predetermined length;
chamfering end surfaces of the cut metal pipe;
forming a notch at a predetermined position on an outer peripheral surface of the metal pipe;
plating the surface of the linear-shaped metal pipe so as to form a plated layer after the chamfering and notch forming steps; and
bending the plated metal pipe into the shape of the substantially letter U so as to form said inserted portions at opposite end portions whereas forming said embedded portion at a middle portion after the plating step, wherein said bending step is executed after said plating step.
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Accused Products
Abstract
The manufacturing method of the present invention is a method for manufacturing a headrest stay including an embedded portion to be embedded into a headrest main body, and inserted portions to be inserted into a top portion of a seat back integrally made of a metal pipe into one piece unit. This manufacturing method includes the steps of: cutting a linear-shaped metal pipe material into a predetermined length; chamfering end surfaces of the cut metal pipe; forming a notch at a predetermined position on an outer peripheral surface of the metal pipe; plating the surface of the linear-shaped metal pipe so as to form a plated layer after the chamfering and notch forming steps; and bending the plated metal pipe into the shape of the substantially letter U, wherein said bending step is executed after said plating step.
13 Citations
3 Claims
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1. A method for manufacturing a headrest stay including an embedded portion to be embedded into a headrest main body, and inserted portions to be inserted into a top portion of a seat back integrally made of a metal pipe in one piece unit, comprising the steps of:
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cutting a linear-shaped metal pipe material into a predetermined length;
chamfering end surfaces of the cut metal pipe;
forming a notch at a predetermined position on an outer peripheral surface of the metal pipe;
plating the surface of the linear-shaped metal pipe so as to form a plated layer after the chamfering and notch forming steps; and
bending the plated metal pipe into the shape of the substantially letter U so as to form said inserted portions at opposite end portions whereas forming said embedded portion at a middle portion after the plating step, wherein said bending step is executed after said plating step. - View Dependent Claims (2, 3)
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Specification