Automotive vehicle seating comfort system

• US 6,869,139 B2
• Filed: 10/08/2003
• Issued: 03/22/2005
• Est. Priority Date: 08/29/2002
• Status: Active Grant

• Current Assignee: Gentherm GmbH (Gentherm Incorporated)
• Original Assignee: Wet Automotive Systems AG (Gentherm Incorporated)
• Inventors: Bajic, Goran, Fernandez, Lucas, Drobnjakovic, Valerija, Brennan, Lindy
• Primary Examiner(s): Cuomo, Peter M.
• Assistant Examiner(s): MCPARTLIN, SARAH BURNHAM
• Application Number:
  US10/681,555
• Publication Number:
  US 20040070236A1
• Time in Patent Office: 531 Days
• Field of Search: 297/180.1, 297/180.11, 297/180.12, 297/180.13, 297/180.14
• US Class Current: 297/180.1
• CPC Class Codes: A47C 7/74 for ventilation, heating or cooling actuated by rocking the chair A47C3/02
• CPC Class Codes: B60N 2/5635 coming from the passenger compartment
• CPC Class Codes: B60N 2/5657 blown towards the seat surface
• CPC Class Codes: B60N 2/5685 Resistance

Abstract

There is disclosed an automotive vehicle seating comfort system for providing heating, cooling, ventilation or a combination thereof to an individual in an automotive car seat. The system typically includes an insert, a blower and a tubular structure for providing fluid communication between the insert and blower for providing ventilation and/or cooling for the individual. Preferably, the insert includes a heater or heater layer for providing heat for the individual.

Claims

1. A ventilated seat for a vehicle, comprising:

a vehicle seat having a ventilated component selected from a seat cushion component and a seat backrest component, at least one of which provides a seat cushion and an air permeable trim surface at occupant contact areas of the seat;

an insert that is open at its sides and located beneath the trim surface of the ventilated component, the insert including;

i) a first layer having a heater integrated therein;

ii) a second layer formed of spacer material, the second layer defining an open space, wherein the spacer material provides opposing honeycomb structures that are formed of a finer filament polymeric strand material than the rest of the spacer material;

a fluid mover in fluid communication with the insert for moving air through the open space and at least partially past an occupant in the seat; and

a tubular structure for providing the fluid communication between the insert and the fluid mover.

2. The ventilated seat of claim 1 wherein the insert further comprises an adhesive layer for adhering the first layer to the second layer.

3. The ventilated seat of claim 1 wherein the tubular structure is integral with the insert.

4. The ventilated seat of claim 1 wherein the tubular structure is defined by a wall and a portion of the wall nearest a forward edge of the seat cushion component is at an angle between about 20 degrees and about 60 degrees relative to another portion of the wall nearest a rearward edge of the seat cushion component.

5. The ventilated seat of claim 1 further comprising a control unit for selectively operating the fluid mover, the heater layer or both.

6. The ventilated seat of claim 5 wherein the control unit is configured to operate the heater layer, the fluid mover or both at two or more different output levels.

7. The ventilated seat of claim 5 wherein the control unit is in signaling communication with a temperature sensor and the control unit is configured to activate the fluid mover if a relatively high temperature is sensed by the sensor and activate the heater if a relatively low temperature is sensed by the sensor.

8. The ventilated seat of claim 1 wherein the fluid mover is configured to pull air through the open space provided by the spacer layer.

9. The ventilated seat of claim 1 wherein the fluid mover is configured to push air through the open space of the spacer material.

10. A ventilated seat for a vehicle, comprising:

a vehicle seat having a ventilated component selected from a seat cushion component and a seat backrest component, at least one of which provides a seat cushion and an air permeable trim surface at occupant contact areas of the seat;

an insert that is open at its sides and located beneath the trim surface of the ventilated component, the insert including;

i) a first layer having a heater integrated therein;

ii) a second layer formed of spacer material, the second layer defining an open space, wherein the spacer material provides opposing honeycomb structures that are formed of a finer filament polymeric strand material than the rest of the spacer material;

a fluid mover in fluid communication with the insert for moving air through the open space and at least partially past an occupant in the seat;

a tubular structure for providing the fluid communication between the insert and the fluid mover, wherein the tubular structure is provided by a foam cushion and defines a passageway through the cushion; and

a deflector is disposed over the passageway defined by the tubular structure for assisting in directing fluid radially away from the passageway.

11. The ventilated seat of claim 10 wherein a plurality of sub-passageways are formed in the foam cushion and extend radially away from the passageway of the foam cushion.

12. A ventilated seat for a vehicle, comprising:

a vehicle seat having a ventilated component selected from a seat cushion component and a seat backrest component, at least one of which provides a seat cushion and an air-permeable trim surface at occupant contact areas of the seat;

an insert that is open at its sides and located beneath the trim surface of the ventilated component, the insert including;

i) a first layer having a lay-wire carbon fiber heater integrated therein;

ii) a second layer formed of spacer material laminated to the first layer with an adhesive, the spacer layer including a pair of fabric panels interconnected by polymeric strand materials for defining an open space between the fabric panels; and

iii) a buffer layer incorporated into the insert adjacent the first layer, the buffer layer being breathable for allowing fluid flow therethrough.

a fluid mover in fluid communication with the insert for moving air under positive pressure through the open space and at least partially past an occupant in the seat; and

a tubular structure extending through the seat cushion and defining a passageway for providing the fluid communication between the insert and the fluid mover, the tubular structure including an enlarged portion.

13. The ventilated seat of claim 12 wherein the fabric panels of the spacer layer are opposing honeycomb structures that are formed of a finer filament polymeric strand material than the rest of the spacer material.

14. The ventilated seat of claim 12 wherein the tubular structure is integral with the insert.

15. The ventilated seat of claim 12 wherein the tubular structure is defined by a wall and a portion of the wall nearest a forward edge of the seat cushion component is at an angle between about 20 degrees and about 60 degrees relative to another portion of the wail nearest a rearward edge of the seat cushion component.

16. The ventilated seat of claim 12 wherein a deflector is disposed over the passageway defined by the tubular structure for assisting in directing fluid radially away from the passageway.

17. The ventilated seat of claim 16 wherein a plurality of sub-passageways are formed in a foam cushion and extend radially away from the passageway of the foam cushion.

18. The ventilated seat of claim 12 further comprising a control unit for selectively operating the fluid mover, the heater layer or both.

19. The ventilated seat of claim 18 wherein the control unit is configured to operate the heater layer, the fluid mover or both at two or more different output levels.

20. The ventilated seat of claim 19 wherein the fluid mover is configured to push air through the open space of the spacer layer.

21. The ventilated seat of claim 18 wherein the control unit is in signaling communication with a temperature sensor and the control unit is configured to activate the fluid mover if a relatively high temperature is sensed by the sensor and activate the heater if a relatively low temperature is sensed by the sensor.

22. The ventilated seat of claim 18 wherein the fluid mover is configured to pull air through the open space provided by the spacer layer.

23. A ventilated seat for a vehicle, comprising:

a vehicle seat having a pair of ventilated components including a seat cushion component and a seat backrest component, both the seat cushion component and the seat backrest component providing a seat cushion and an air-permeable trim surface at occupant contact areas of the seat;

a pair of inserts, one in the seat cushion component and one in the seat backrest component, each insert being open at its sides and located beneath the trim surface of each ventilated component, each insert including;

i) a first layer having a lay-wire carbon fiber heater integrated therein;

ii) a second layer formed of spacer material laminated to the first layer with an adhesive, the spacer layer including a pair of fabric panels interconnected by polymeric strand materials for defining an open space between the fabric panels; and

iii) a buffer layer incorporated into the insert adjacent the first layer, the buffer layer being breathable for allowing fluid flow therethrough.

a pair of fluid movers respectively in fluid communication with the pair of inserts for moving air through the open space of each insert and at least partially past an occupant in the seat; and

a pair of tubular structures, each structure respectively extending through each seat cushion of each ventilated component and defining a passageway for providing the fluid communication between the respective inserts and the respective fluid movers, each tubular structure including an enlarged portion.

24. A ventilated seat for a vehicle, comprising:

a multi-layer laminate insert that is open at its sides and located beneath the trim surface of the ventilated component, the insert including;

i) a first layer having a heater integrated therein, the heater including a plurality of flexible electrical substantially flat heating elements;

ii) a second layer formed of spacer material, the second layer defining an open space, wherein the spacer material provides opposing honeycomb structures that are formed of a finer filament polymeric strand material than the rest of the spacer material;

a blower in fluid communication with the insert for moving air through the open space and at least partially past an occupant in the seat; and

a duct for providing the fluid communication between the insert and the blower.

25. The ventilated seat of claim 24, further comprising a plurality of sub-passageways.

26. The ventilated seat of claim 25 wherein the duct provides a passageway and the plurality of sub-passageways extend radially away from the passageway.

27. The ventilated seat of claim 24 wherein the plurality of heating elements are wires or carbon fibers laminate to a backing.

28. The ventilated seat of claim 24 wherein the spacer material includes polymeric strand material.

29. The ventilated seat of claim 24 wherein the insert further comprises an adhesive layer for adhering the first layer to the second layer.

30. The ventilated seat of claim 24 wherein the duct is provided by a foam cushion and defines a passageway through the cushion.

31. The ventilated seat of claim 30 wherein a deflector is disposed over the passageway defined by the tubular structure for assisting in directing fluid radially away from the passageway.

32. The ventilated seat of claim 31, wherein a plurality of sub-passageways are formed in the foam cushion and extend radially away from the passageway of the foam cushion.

33. The ventilated seat of claim 32 wherein the fluid mover is configured to pull air through the open space provided by the spacer layer.

34. A ventilated seat as in claim 32 wherein the fluid mover is configured to push air through the open space of the spacer layer.

35. The ventilated seat of claim 24, wherein the duct is defined by a wall and a portion of the wall nearest a forward edge of the seat cushion component is at an angle between about 20 degrees and about 60 degrees relative to another portion of the wall nearest a rearward edge of the seat cushion component.

36. The ventilated seat of claim 24 further comprising a control unit for selectively operating the fluid mover, the heater layer.

37. The ventilated seat of claim 36, wherein the control unit is configured to operate the heater layer, the fluid mover or both at two or more different output levels.

38. The ventilated seat of claim 37, wherein the control unit is in signaling communication with a temperature sensor and the control unit is configured to activate the fluid mover if a relatively high temperature is sensed by the sensor and activate the heater if a relatively low temperature is sensed by the sensor.