Heater for an automotive vehicle and method of forming same

• US 8,702,164 B2
• Filed: 05/12/2011
• Issued: 04/22/2014
• Est. Priority Date: 05/27/2010
• Status: Expired due to Fees

• Current Assignee: WET Automotive Systems Limited (Gentherm Incorporated)
• Original Assignee: WET Automotive Systems Limited (Gentherm Incorporated)
• Inventors: Lazanja, Marinko, Zuzga, Matthew, Csonti, Sergiu, Iqbal, Syed, Spasojevic, Igor, Normand, Tim
• Primary Examiner(s): Dunn, David R
• Assistant Examiner(s): Brindley, Timothy J
• Application Number:
  US13/106,148
• Publication Number:
  US 20110226751A1
• Time in Patent Office: 1,076 Days
• Field of Search: 297/180.12, 219/202, 219/210, 219/217, 219/545, 219/549
• US Class Current: 297/180.12
• CPC Class Codes: A47C 7/748 for heating
• CPC Class Codes: B60N 2/5685 Resistance
• CPC Class Codes: F24H 3/0411 for domestic or space-heating systems
• CPC Class Codes: H01C 17/06 adapted for coating resistive material on a base
• CPC Class Codes: H05B 1/0238 For seats
• CPC Class Codes: H05B 1/028 Airconditioning
• CPC Class Codes: H05B 2203/006 using interdigitated electrodes
• CPC Class Codes: H05B 2203/016 Heaters using particular connecting means
• CPC Class Codes: H05B 2203/029 Heaters specially adapted for seat warmers
• CPC Class Codes: H05B 3/36 heating conductor embedded in insulating material
• CPC Class Codes: Y10T 29/49083 Heater type

Abstract

A heated seat comprising: a cushion with one or more trench areas; a heater comprising: a carrier with a periphery, the carrier further including: a first electrically functional layer that is made of a conductive material that substantially circumscribes at least a portion of the carrier; and a second electrically functional layer that is made of a resistive material; one or more electrical conductors attached to the first electrically functional layer; a trim layer that covers the cushion when the heater is placed over the cushion; and wherein the periphery includes a first side edge and a second side edge, and each side edge includes a cutout, and the cutouts are located adjacent to each other forming a neck portion; wherein the heater is attached to the cushion by placing an attachment device over the neck portion of the heater and securing one or both ends of the attachment device to the cushion so that the neck portion is pulled into the trench; wherein the neck portion is free of the second electrically functional layer; and wherein the first electrically functional layer and the second electrically functional layer form a checkered pattern.

Claims

1. A heated seat comprising;

a. a cushion with one or more trench areas;

b. a heater comprising;

i. a carrier having;

1. a periphery;

2. a first side edge; and

3. a second side edge;

ii. a first electrically functional layer that is made of a conductive material comprising;

1. a first electrode that substantially circumscribes at least a portion of the carrier in a generally continuous manner; and

2. a second electrode;

iii. a second electrically functional layer that made of a resistive material; and

iv. one or more electrical conductors attached to the first electrically functional layer;

c. a trim layer that covers the cushion when the heater is placed over the cushion; and

wherein the first side edge and the second side edge both include a cutout, and the cutouts are symmetrically located forming a neck portion therebetween;

wherein the neck portion has an internal cutout that is located between the cutout on the first side edge and the cutout on the second side edge so that the neck portion is split into two separate portions;

wherein the carrier includes at least one internal slit located above the internal cutout and at least one internal slit located below the internal cutout;

wherein the second electrode substantially circumscribes at least a portion of the internal cutout, at least a portion of the at least one internal slit located above the internal cutout and at least a portion of the at least one internal slit located below the internal cutout;

wherein the neck portion extends into the trench; and

wherein the neck portion is free of the second electrically functional layer.

2. The heated seat of claim 1, wherein the heater is integrated into and heats a seat portion, a back portion, bolsters, a head rest, or a combination thereof of the seat.

3. The heated seat of claim 1, wherein the heater is part of a ventilation system, wherein the ventilation system includes one or more air movers.

4. The heated seat of claim 3, wherein the carrier includes one or more features to allow the one or more air movers to pass air through the carrier.

5. The heated seat of claim 1, wherein the heater is part of an actively cooled system;

and wherein the carrier includes one or more features to allow one or more air movers to pass air through the carrier.

6. The heated seat of claim 1, wherein the heater is placed over an air distributor that includes one or more air movers that move air through one or more features of the heater, wherein the air distributor includes a spacer material.

7. The heated seat of claim 6, wherein the spacer material is a reticulated foam, a knitted spacer fabric, a closed cell foam having apertures for air flow, rubberized hair, or synthetic strands of material sandwiched between webs of honeycomb textile.

8. The heated seat of claim 1, wherein the first electrically functional layer forms one or more electrodes that have a width, and the width of the electrodes increases in the neck portion so that the width in the neck portion is wider than the width of the electrodes before and after the neck portion.

9. The heated seat of claim 1, further including a third layer covering the carrier, the first electrically functional layer, the second electrically functional layer, or a combination thereof.

10. The heated seat of claim 1, wherein the one or more electrical conductors are attached via a mechanical electrical connector that includes only an attachment portion and a backing portion, and the electrical conductor is a wire with a gauge of 18 or smaller.

11. The heated seat of claim 1, wherein the heater is used with an air distributor, and the heater is one wall of the air distributor.

12. The heated seat of claim 9, wherein the carrier is made of polyester, polyimide, polyolefin, polypropylene, polyethylene, polyetherimide, or a combination thereof.

13. The heated seat of claim 9, wherein the conductive material includes silver, copper, gold, graphite fibers, carbon fibers, or a combination thereof.

14. The heated seat of claim 1, wherein the carrier includes a lobed portion and the one or more electrical conductors are two electrical conductors and the two electrical conductors are connected to the first electrically functional layer via electric terminals that are located in the lobed portion.

15. The heated seat of claim 14, wherein the lobe is symmetrically located on the carrier by an axis defined from midpoints along a top edge and a bottom edge of the carrier.

16. The heated seat of claim 15, wherein the internal cutout, the at least one internal slit located above the internal cutout, and the at least one internal slit located below the internal cutout divide the heater into four quadrants and each of the four quadrants includes one or more feature.

17. The heated seat of claim 1, wherein the first electrode is without any discretely defined ends.

18. A heated seat comprising:

a. a cushion with one or more trench areas;

b. a heater comprising;

i. a carrier having;

1. a periphery;

2. a first side edge; and

3. a second side edge;

wherein the first side edge and the second side edge both include a cutout, and the cutouts are symmetrically located forming a neck portion therebetween;

wherein the neck portion has an internal cutout that is located between the cutout on the first side edge and the cutout on the second side edge so that the neck portion is split into two separate portions;

wherein the carrier includes at least one internal slit;

wherein the neck portion extends into the one or more trench areas;

ii. a first electrically functional layer that is made of a conductive material comprising;

1. a first electrode that substantially extends around the periphery of at least a portion of the carrier in a generally continuous manner without any discretely defined ends; and

2. a second electrode that substantially circumscribes at least a portion of the internal cutout and at least one internal slit in a generally continuous manner;

iii. a second electrically functional layer that is made of a resistive material, wherein the neck portion is free of the second electrically functional layer; and

iv. one or more electrical conductors attached to the first electrically functional layer;

v. one or more lobed portions on the periphery of the carrier, wherein the one or more lobed portions includes one or both of the first and second electrodes; and

c. a trim layer that covers the cushion when the heater is placed over the cushion.

19. The heated seat of claim 18, wherein the one or more lobed portions is symmetrically located on the carrier by an axis defined from midpoints along a top edge and a bottom edge of the carrier.

20. The heated seat of claim 18, wherein the one or more lobed portions includes one or more electrical terminals attached to the one or both of the first and second electrodes.