Planar heater and manufacturing method thereof

Patent metadata

Field	Value
Publication number	US-2019135077-A1
Application number	US-201816180253-A
Country	US
Kind code	A1
Filing date	Nov 5, 2018
Priority date	Nov 6, 2017
Publication date	May 9, 2019
Grant date	—

Abstract

A planar heater includes: a body forming a car interior material, having an upper side opened, and having an accommodation space formed therein; a planar heating portion installed on an upper side of the body; and a foam layer foaming between the body and the planar heating portion and installed in the accommodation space.

First claim

What is claimed is:

1 . A planar heater comprising:
a body forming a car interior material, having an upper side opened, and having an accommodation space formed therein; a planar heating portion installed on an upper side of the body; and a foam layer foaming between the body and the planar heating portion and installed in the accommodation space.

2 . The planar heater of claim 1 , wherein the planar heating portion comprises:
fiber threads woven by weft and warp; heating threads inserted into the weft or warp of the fiber threads at regular interval, and woven; and metal leading wires woven at left and right sides of the fiber threads and configured to supply power to the heating threads.

3 . The planar heater of claim 2 , wherein the heating threads are formed by carbon fiber.

4 . The planar heater of claim 2 , wherein the metal leading wires are woven with the fiber threads in a zigzag pattern.

5 . The planar heater of claim 1 , wherein polyurethane foams to form the foam layer.

6 . The planar heater of claim 5 , wherein a portion of the foam layer foams while passing through the planar heating portion, and allows the planar heating portion to be impregnated with the foam layer.

7 . The planar heater of claim 1 , wherein a skin layer is arranged on an upper side of the foam layer.

8 . The planar heater of claim 2 , further comprising:
a sensor unit configured to measure temperature of the planar heating portion; and a temperature controller configured to control the temperature of the planar heating portion.

9 . A method for manufacturing a planar heater, the method comprising:
injection-molding a body forming a car interior material, having an upper side opened, and having an accommodation space formed therein; inserting a planar heating portion into one side of a mold; seating the body in the other side of the mold such that the planar heating portion is positioned in the accommodation space of the body; and forming a foam layer by foaming in the accommodation space of the body.

10 . The method of claim 9 , wherein, in the step of forming the foam layer, a portion of the foam layer foams while passing through the planar heating portion, and allows the planar heating portion to be impregnated with the foam layer.

11 . The method of claim 10 , wherein, in the step of forming the foam layer, polyurethane foams to form the foam layer.

12 . The method of claim 11 , further comprising coating a surface of the foam layer with an adhesive, and encapsulating the foam layer with a skin layer.

Assignees

• Seoyon E Hwa Co Ltd

Inventors

• Lee Si Wook
• Kim Dong Suk
• Park Hyung Won
• Hong Seok Hwan

Classifications

• B60H2001/2293

  Integration into other parts of a vehicle · CPC title

• H05B2203/017

  Manufacturing methods or apparatus for heaters · CPC title

• B60H1/2218 Primary

  controlling the operation of electric heaters · CPC title

• H05B1/02

  Automatic switching arrangements specially adapted to apparatus {; Control of heating devices} (thermally-actuated switches H01H37/00) · CPC title

• H05B3/347

  woven fabrics · CPC title