WO1998002330A1 - Air cooled/heated vehicle seat assembly - Google Patents
Air cooled/heated vehicle seat assembly Download PDFInfo
- Publication number
- WO1998002330A1 WO1998002330A1 PCT/IB1997/000185 IB9700185W WO9802330A1 WO 1998002330 A1 WO1998002330 A1 WO 1998002330A1 IB 9700185 W IB9700185 W IB 9700185W WO 9802330 A1 WO9802330 A1 WO 9802330A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- seat
- air
- seat back
- seat cushion
- back pad
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/56—Heating or ventilating devices
- B60N2/5607—Heating or ventilating devices characterised by convection
- B60N2/5621—Heating or ventilating devices characterised by convection by air
- B60N2/5657—Heating or ventilating devices characterised by convection by air blown towards the seat surface
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C7/00—Parts, details, or accessories of chairs or stools
- A47C7/62—Accessories for chairs
- A47C7/72—Adaptations for incorporating lamps, radio sets, bars, telephones, ventilation, heating or cooling arrangements or the like
- A47C7/74—Adaptations for incorporating lamps, radio sets, bars, telephones, ventilation, heating or cooling arrangements or the like for ventilation, heating or cooling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00271—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit
- B60H1/00285—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit for vehicle seats
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/56—Heating or ventilating devices
- B60N2/5607—Heating or ventilating devices characterised by convection
- B60N2/5621—Heating or ventilating devices characterised by convection by air
- B60N2/5628—Heating or ventilating devices characterised by convection by air coming from the vehicle ventilation system, e.g. air-conditioning system
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00271—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit
- B60H2001/003—Component temperature regulation using an air flow
Definitions
- the present invention relates generally to a vehicle seat assembly, and more particularly to a vehicle seat assembly which may be heated or cooled by forced air directed through the cushions of the seat assembly.
- the seat When a conventional vehicle seat is exposed to a warm ambient temperature, the seat may attain a high temperature. Further, after the occupant of the vehicle is seated on the seat, the occupant may quickly become uncomfortable as the heat held by the seat is trapped between the occupant's body and the seat. Even after the vehicle's air conditioning system has cooled the vehicle's interior, the heat trapped between the seat and the occupant is ever present, causing the occupant to perspire. This moisture becomes a primary source of discomfort to the occupan . The moisture build up between the seat and the occupant increases with the length of time the occupant is seated on the seat. The moisture is most noticeable upon exiting the vehicle, when the occupant has the chance to actually feel his or her dampened clothing.
- the conventional vehicle seats can be uncomfortably cold for a period of time. After the vehicle's interior has heated up, the occupant's body may lose a significant amount of heat, and subsequently, the occupant may be uncomfortable until the heat can be replaced. Molded foam vehicle seating is especially susceptible to the above-mentioned problems since a barrier film, necessary for molding, lies approximately five millimeters below the seat covering material or fabric surface. Thus, even if the material covering the foam is air permeable, the seat will not "breath," due to the film barrier layer. When covering material such as leather is used to cover the foamed cushion, the leather must be punctured so as to permit air to pass therethrough enabling the seat to breath. However, even seats that can breath still cause the above-mentioned discomfort to the occupant since sufficient heating or cooling of the seat cannot occur.
- a vehicle seat assembly including a seat frame structure having a riser constructed and arranged to be fixedly mounted on a floor of a vehicle, and a movable portion constructed and arranged to be movable in relation to the riser in fore and aft directions with respect to a longitudinal axis of the vehicle.
- a seat cushion assembly including an open- cell foam seat cushion is mounted on the movable portion.
- the seat cushion has a top surface and a bottom surface and includes a plurality of air channels therein extending generally from the bottom surface to the top surface to direct air to the top surface of the seat cushion.
- the seat cushion is of sufficient thickness and density to support an occupant thereon.
- the seat cushion assembly includes a seat cushion cover material covering at least the top surface of the seat cushion.
- the seat cushion cover material is constructed and arranged to permit air to pass therethrough.
- a seat back frame is coupled to the movable portion of the frame structure.
- a seat back pad assembly including an open-cell foam seat back pad is mounted on the seat back frame.
- the seat back pad has a front surface and a rear surface and has a thickness and density generally equal to the thickness and density of the seat cushion.
- the seat back pad includes a plurality of air channels therein extending generally from the rear surface to the front surface to direct air to the front surface of the seat back pad.
- the seat back pad assembly includes a seat back cover material covering at least the front surface of the seat back pad. The seat back cover material is constructed and arranged to permit air to pass therethrough.
- Air flow directing structure is adapted to be coupled to a source of forced air and has a portion constructed and arranged to be mounted on the floor of the vehicle.
- the air flow directing structure is operatively associated with the seat cushion assembly and seat back pad assembly so as to direct forced air (1) through the open cells of the seat cushion and of the seat back pad so as to change a temperature of the seat cushion and of the seat back pad, and
- the air flow directing structure is constructed and arranged to accommodate the fore and aft movement of the movable portion of the frame structure.
- Another object of the present invention is the provision of a seating assembly of the type described, which is simple in construction, effective in operation and economical to manufacture and maintain.
- FIG. 1 is a perspective view of a vehicle seating assembly embodying the principles of the present invention, shown mounted in an operative position with respect to a vehicle floor, with remainder of the vehicle omitted for clarity of illustration;
- FIG. 2 is an exploded view of the vehicle seat assembly of FIG. 1 ;
- FIG. 3 is a perspective view of air flow directing structure of the assembly of FIG. 1;
- FIG. 4 is an exploded view of a seat manifold being coupled to a seat pan of a seat of the assembly of FIG. 1;
- FIG. 5 is an exploded view of a seat manifold being attached to a seat back of a seat of the assembly of FIG. 1;
- FIG. 6 is a schematic, sectional view of a control member of an air receiving member for controlling air flow to an associated seat
- FIG. 7 is an exploded, perspective view of a portion of the air receiving member shown with the control member being inserted thereinto;
- FIG. 8 is a perspective view of a seat cushion bottom showing venting channels therethrough .
- the assembly 10 includes a driver's seat 12 and an adjacent passenger's seat 14.
- Each seat is generally identical and includes a seat frame structure, generally indicated at 15, including a riser 16 constructed and arranged to be fixedly mounted within the passenger compartment of a vehicle on the vehicle floor 18.
- the frame structure 15 includes a movable portion, generally indicated at 20, including a pair of ' spaced supports, 22 and 24 which are mounted for movement with respect to an associated riser 16.
- each of the supports 22 and 24 is mounted so as to be slidable along tracks 26 of the riser 16, in fore and aft directions with respect to a longitudinal axis A of the vehicle.
- the movable portion 20 of each seat 12 and 14, also includes a seat pan 28 mounted between the supports 22 and 24 so as to be movable therewith.
- a seat cushion assembly including a molded, open cell foam seat cushion 32 (FIG. 8) and a cover material 33 is mounted on each seat pan 28.
- the seat cushion assemblies are identical and thus, only one will be described in detail.
- the seat cushion 32 has a top surface 34 and an opposing bottom surface 36, with a plurality of air channels 38 extending generally from the bottom surface 36 to the top surface 34 thereof. As shown in FIG. 8, the plurality of air channels 38 are arranged in the seat cushion 32 such that the channels 38 correspond generally to a leg engaging area of the occupant.
- the seat cushion 32 with the channels 38 therein is of sufficient thickness and density to support an occupant thereon.
- the seat cushion cover material 33 covers at least the top surface 34 of the seat cushion 32.
- the seat cushion cover material 33 is preferably made of cloth or other air permeable fabric. If the cover material 33 is leather or other impermeable material, the leather must include perforations 42 (FIG. 1) therein so as to permit air to flow therethrough.
- An exemplary perforation pattern is formed by a series of round holes approximately 0.03 inches in diameter disposed in a series of straight rows. The holes of each row are spaced apart approximately 0.36 inches. The rows are spaced apart approximately 0.35 inches. The holes of every other row are aligned and the holes of adjacent rows are equally offset.
- Another exemplary perforation pattern is formed by groups of three round holes each approximately 0.03 inches in diameter.
- a group of three holes are formed centrally in every other square of a grid of imaginary perpendicular parallel lines spaced apart approximately 0.25 inches. Each group of three includes two holes spaced apart approximately 0.12 inches and a third spaced approximately 0.15 inches from the two. It is within the contemplation of the invention to provide a cover material which may include a fabric covering a thin foam layer, which ultimately covers at least a portion of the seat cushion. When the cover material includes the foam layer, both the foam layer and covering must be constructed and arranged to permit air to pass therethrough.
- the seat cushion assembly is molded from foam, having a film barrier 49 (FIG. 8) beneath the cover material 33, which is required for the molding process, the barrier 49 must be punctured or must include perforations 47 so as to permit air to flow therethrough.
- the foamed seat cushion 32 should have open cells to permit air to pass through the open cells for conditioning the cushion, as will be explained in more detail below.
- a seat back frame 44 is pivotally coupled to the supports 22 and 24 of the movable portion 20 of an associated seat frame structure at pins 45.
- a seat back pad assembly is mounted on the seat back frame 44.
- the seat back pad assembly 46 includes an open-cell foam seat back pad 48 and a seat back cover material 50 covering at least a front surface of the seat back pad 48.
- the seat back pad 48 has a rear surface opposing the front surface thereof and has a thickness and density generally equal to the thickness and density of the seat cushion 32 so as to sufficiently support the back of the occupant.
- the seat back pad 48 includes a plurality of air channels 52 (FIG. 2) therein extending generally from the rear surface to the front surface thereof to direct air to the front surface of the seat back pad 48.
- the seat back cover material 50 is the same material as the cover material 33 and is constructed and arranged to permit air to pass therethrough.
- the film barrier provided therein must be punctured to permit air to pass therethrough.
- the cover material 50 is an impermeable material such as leather, as shown covering the passenger seat 14 in FIG. 1, the material must include perforations 53 similar to the perforations 42 previously described to permit air to pass therethrough.
- molded foam seat cushion assemblies are shown, it is within the contemplation of the invention to provide seats made from any known process.
- cut and sew type seat cushion assemblies and glued seat cushion assemblies may be employed, so long as they are constructed and arranged to permit forced air to flow from a rear portion of the seat to the front surface of the seat and through the cover material thereof for conditioning the seat cushion assembly.
- the movable portion 20 of the seat frame structure 15 permits the seat pan 28 together with the seat cushion assembly 30 thereon and the seat back frame 44 and seat back pad assembly 46 thereon to be movable in relation to the riser 16 in fore and aft directions with respect to the longitudinal axis A of the vehicle.
- the seat back frame 44 may be pivoted so as to fold forwardly to permit passengers to enter a rear compartment of the vehicle or may pivot rearwardly so as to be disposed in and inclined position. It is within the contemplation of the invention to provide at least the driver's seat 12 of the seat assembly 10 to be movable vertically as well as fore and aft to thus provide a seat with a conventional six-position adjustment.
- air flow directing structure generally indicated at 54, is provided and includes and air receiving member 56 constructed and arranged to be mounted on the vehicle floor 18.
- a forward portion 58 of the receiving member 56 is adapted to be coupled to a source of forced air such as the HVAC system of the vehicle.
- a separate source of forced air may be provided, such as a system mounted under at least one of the seats and coupled to the air receiving member 56.
- the air receiving member 56 is generally of T-shaped configuration defining an internal air chamber.
- the air flow directing structure includes a seat manifold 60 coupled to the seat pan 28 of each seat 12 and 14.
- Each manifold 60 is connected to an inlet 61 of the air receiving member 56 by a flexible hose 62 to accommodate the fore and aft movement of the associated seat .
- each of the seat manifolds 60 includes upwardly extending flexible members 64 which are engaged with holes 66 defined in the bottom of the seat pan 28.
- each seat manifold 60 is coupled to an associated seat pan 28 such that forced air directed from the source may flow through the air receiving member 56 and to each seat manifold 60, with the manifold 60 directing air upwardly through the seat cushion 32.
- a flexible hose 68 couples a seat manifold 60 to an associated seat back pad assembly 46 such that forced air may flow through the seat manifold to the seat back pad 48.
- the air flow directing structure includes a seat back manifold 70 sewn into the seat back pad assembly 46 and coupled to the flexible hose 68 such that forced air from the seat manifold 60 is directed to the seat back manifold 70.
- the seat back manifold 70 then directs the air from the rear surface of the seat back pad 48 to the front surface thereof.
- the air receiving member 56 includes a manually movable flow control member 72 mounted within the air chamber 67 and associated with each seat manifold 60 so as to control the flow of forced air from the air chamber to the associated seat .
- each flow control member 72 includes a sliding member 74 sealingly mounted with respect to the air receiving member 56 so as to be manually moved to open, close, or particularly close a passageway 76 which leads to the associated seat manifold 60.
- FIG. 6 is a sectional view showing the passageway 76 substantially closed by the sliding member 74.
- the air receiving member 56 may be coupled to a source of forced air, preferably the HVAC system of the vehicle. It is preferable to couple the air flow receiving member to the HVAC system since both heating and cooling can be provided to the seat assembly 10 and the temperature of the air can be controlled by the existing vehicle temperature controls.
- forced air can enter the T-shaped air receiving member 56.
- the air flow to either seat 12 and 14 can be controlled by the air control members 72.
- the air may then flow through the flexible tubes 62 and into the seat manifolds 60.
- Each seat manifold 60 then supplies the air to both the associated seat cushion 32 and to the associated seat back assembly 46 via the flexible tube 68.
- the air directed to the seat cushion 32 flows from the seat manifold 60, which directs air to the channels 38 and to the bottom surface of the seat cushion 32.
- the air flows through the open cells of the seat cushion 32 so as to change a temperature of the seat cushion 32, and, the air flows through the channels 38 in the seat cushion 32 and through the cover material 33 to evaporate moisture which may accumulate between the cover material 33 and the occupant's legs.
- Air is directed from each seat manifold 60 to the associated seat back manifold 70.
- the air flows from the seat back manifold 70 through the open cells of the seat back pad 48 to change the temperature of the seat back pad 48 and also flows through the channels 52 in the seat back pad 48 through the cover material 50 and ultimately to the occupant.
- the seat back pad assembly 46 and the seat cushion assembly 30 can be cooled or heated to a comfortable temperature in as much time as is required to cool or heat the vehicle interior.
- the air flowing through the cover material of each seat 12 and 14 may evaporate and dissipate any moisture built up during the initial cool down period, thereby preventing any further perspiring of the occupant. Since the entire seat is being conditioned due to the open cell construction of the foam seat cushion 32 and seat back pad 48, a comfortable seat temperature can be provided.
- the assembly 10 is completely controllable, since the air flow to each seat can be regulated individually by throttling back the air flow and by adjusting the vehicle's HVAC control .
- a pair of bucket-type seats are shown, it is within the contemplation of the invention to provide the heating and cooling features of the invention to only one seat, such as the driver's seat 10. Further, the heating and cooling features may be employed in a bench seat or the like. With a bench seat, a seat pan may not be required and the forced air can be provided in any manner to the underside of the bench seat, and if desired, to the seat back of the bench seat. Further, although in the illustrated embodiment, the seat manifolds and the seat back manifolds are provided separately, they can be made part of seat pan or part of the seat back assembly, respectively.
- the invention discloses air flow through both the seat cushion assembly and seat back pad assembly of each seat, it can be appreciated that air flow need not be provided to the seat back pad assembly, since most moisture or discomfort to the occupant is a result of improper temperature control of the seat cushion assembly.
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP97904540A EP0912363B1 (en) | 1996-07-16 | 1997-02-06 | Air cooled/heated vehicle seat assembly |
CA002261067A CA2261067C (en) | 1996-07-16 | 1997-02-06 | Air cooled/heated vehicle seat assembly |
AT97904540T ATE202040T1 (en) | 1996-07-16 | 1997-02-06 | AIR COOLED/HEATED VEHICLE SEAT |
AU17309/97A AU1730997A (en) | 1996-07-16 | 1997-02-06 | Air cooled/heated vehicle seat assembly |
BR9710295-4A BR9710295A (en) | 1996-07-16 | 1997-02-06 | Vehicle seat set. |
DE69705223T DE69705223T2 (en) | 1996-07-16 | 1997-02-06 | AIR COOLED / HEATED VEHICLE SEAT |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/680,667 US5626386A (en) | 1996-07-16 | 1996-07-16 | Air cooled/heated vehicle seat assembly |
US08/680,667 | 1996-07-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1998002330A1 true WO1998002330A1 (en) | 1998-01-22 |
Family
ID=24732016
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IB1997/000185 WO1998002330A1 (en) | 1996-07-16 | 1997-02-06 | Air cooled/heated vehicle seat assembly |
Country Status (9)
Country | Link |
---|---|
US (1) | US5626386A (en) |
EP (1) | EP0912363B1 (en) |
AT (1) | ATE202040T1 (en) |
AU (1) | AU1730997A (en) |
BR (1) | BR9710295A (en) |
CA (1) | CA2261067C (en) |
DE (1) | DE69705223T2 (en) |
ES (1) | ES2159841T3 (en) |
WO (1) | WO1998002330A1 (en) |
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- 1997-02-06 BR BR9710295-4A patent/BR9710295A/en not_active Application Discontinuation
- 1997-02-06 WO PCT/IB1997/000185 patent/WO1998002330A1/en active IP Right Grant
- 1997-02-06 AU AU17309/97A patent/AU1730997A/en not_active Abandoned
- 1997-02-06 CA CA002261067A patent/CA2261067C/en not_active Expired - Fee Related
- 1997-02-06 AT AT97904540T patent/ATE202040T1/en not_active IP Right Cessation
- 1997-02-06 ES ES97904540T patent/ES2159841T3/en not_active Expired - Lifetime
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Also Published As
Publication number | Publication date |
---|---|
CA2261067C (en) | 2005-01-18 |
EP0912363B1 (en) | 2001-06-13 |
DE69705223D1 (en) | 2001-07-19 |
EP0912363A1 (en) | 1999-05-06 |
ES2159841T3 (en) | 2001-10-16 |
DE69705223T2 (en) | 2002-04-25 |
ATE202040T1 (en) | 2001-06-15 |
CA2261067A1 (en) | 1998-01-22 |
BR9710295A (en) | 2000-01-11 |
AU1730997A (en) | 1998-02-09 |
US5626386A (en) | 1997-05-06 |
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