WO2012128370A1 - クッション部材及び座席構造 - Google Patents
クッション部材及び座席構造 Download PDFInfo
- Publication number
- WO2012128370A1 WO2012128370A1 PCT/JP2012/057634 JP2012057634W WO2012128370A1 WO 2012128370 A1 WO2012128370 A1 WO 2012128370A1 JP 2012057634 W JP2012057634 W JP 2012057634W WO 2012128370 A1 WO2012128370 A1 WO 2012128370A1
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- WIPO (PCT)
- Prior art keywords
- layer
- cushion member
- intermediate layer
- upper layer
- fabric
- Prior art date
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Classifications
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- 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
- B60N2/64—Back-rests or cushions
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C27/00—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas
- A47C27/22—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with both fibrous and foamed material inlays
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C31/00—Details or accessories for chairs, beds, or the like, not provided for in other groups of this subclass, e.g. upholstery fasteners, mattress protectors, stretching devices for mattress nets
- A47C31/006—Use of three-dimensional fabrics
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- 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
- A47C7/02—Seat parts
- A47C7/18—Seat parts having foamed material included in cushioning part
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- 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
- A47C7/02—Seat parts
- A47C7/28—Seat parts with tensioned springs, e.g. of flat type
- A47C7/287—Seat parts with tensioned springs, e.g. of flat type with combinations of different types flat type tensioned springs
Definitions
- the present invention relates to a cushion member that is suitable for a vehicle seat such as an automobile, an aircraft, and a train, and that can be used for furniture, an office chair, and the like, and a seat structure using the cushion member.
- the present applicant arranges a torsion bar at the front part or rear part of the seat cushion part and elastically supports the cushion member by a frame supported by the torsion bar. Or a cushion member is stretched between side frames or between front and rear frames, and a part of the cushion member is supported elastically by a coil spring, and the cushion member is arranged as a tension structure.
- Various structures have been proposed (see, for example, Patent Documents 1 and 2).
- Patent Documents 1 and 2 use a three-dimensional solid knitted fabric, a thin urethane material laminated with a two-dimensional net material, or the like as a cushion member.
- the spring characteristics of torsion bars and coil springs are used as means for obtaining a desired stroke when pressure is applied in the thickness direction by adjusting the tension in the surface direction of these cushion members.
- the cushion member improved its sag characteristics by itself, provided tension to the surface layer to prevent wrinkles, and further provided a feeling of stroke.
- the present invention has been made in view of the above, and imparts tension characteristics (residual stress) to the upper and lower layers of a cushion member used as a tension structure by an intermediate layer, thereby reducing the number of spring members such as coil springs.
- tension characteristics residual stress
- the cushion member of the present invention comprises at least one intermediate layer and a laminated structure of upper and lower layers laminated on the upper and lower sides of the intermediate layer, and the intermediate layer is foamed with a predetermined thickness.
- the upper layer and the lower layer are made of resin, and the upper layer and the lower layer are fixed to the front surface side and the back surface side of the foamed resin that constitutes the intermediate layer, respectively, and the upper layer has a front side, and the upper layer has higher surface tension than the lower layer.
- it is provided as a tension structure by being stretched between frames arranged at a predetermined interval.
- the cushion member is bent and stretched between the frames by bending the edge portion so that the upper layer at the edge portion is the front side and the lower layer is the back side, and the upper layer has higher tension in the surface direction than the lower layer. It is preferable to set so as to be.
- the foamed resin and the upper layer or the foamed resin and the lower layer are fixed by a part of the foamed resin in the thickness direction entering a gap between yarns of the fabric constituting the upper layer or the lower layer.
- the fabric constituting the upper layer or the lower layer is preferably a two-dimensional fabric or a three-dimensional fabric.
- the fabric constituting the upper layer or the lower layer is a three-dimensional fabric, and the three-dimensional fabric reciprocates between the pair of ground knitted fabrics arranged apart from each other and the pair of ground knitted fabrics to couple them together.
- the amount of intrusion is in a range that does not contact at least part of the other ground knitted fabric of the three-dimensional fabric.
- the knitted fabric structure of at least one ground knitted fabric of the three-dimensional fabric has a honeycomb shape.
- the intrusion amount of a part of the foamed resin constituting the intermediate layer in the thickness direction from one ground knitted fabric side of the three-dimensional fabric is in the range of 1/3 to 2/3 of the thickness of the three-dimensional fabric. It is preferable that The foamed resin constituting the intermediate layer is preferably a polyurethane foam.
- the upper layer and the lower layer sandwiching the intermediate layer are laminated with a predetermined positional relationship with respect to the roll direction, which is the winding direction of the original fabric, so that the tension characteristics in the plane direction are increased. It is preferable to set predetermined characteristics from anisotropic to isotropic.
- the layer sandwiched between the intermediate layers is a layer in which the lower layer of the upper intermediate layer and the upper layer of the lower intermediate layer are combined.
- the said cushion member is tensioned by each flame
- frame which comprises the seat cushion part of a seat structure, a seat back part, a headrest part, an armrest part, or an ottoman part.
- the seat structure of the present invention is a seat structure in which the cushion member is stretched on each frame constituting a seat cushion portion, a seat back portion, a headrest portion, an armrest portion, or an ottoman portion, and the cushion member includes As a tension structure, the upper layer is placed on the front side, and the upper layer is stretched between frames arranged at predetermined intervals so that the upper layer has higher tension in the surface direction than the lower layer. It is what is provided.
- the seat structure is configured such that the end of the cushion member is bent such that the upper layer at the end is on the front side and the lower layer is on the back side, and the cushion member is stretched between the frames. It is preferable.
- the upper layer and the lower layer are fixedly laminated with the foamed resin interposed therebetween.
- the upper layer With the upper layer on the front side, it is stretched between frames that are spaced apart by a predetermined distance, so that the tension in the upper layer along the surface direction is higher than the tension in the lower layer so that the tension in the surface direction also works upward.
- the spring characteristics of the intermediate layer tensile / compressive residual stress is applied from the intermediate layer as a starting point, and tensile stress acts on the upper layer and compressive stress acts on the lower layer.
- the force pulled outward on the surface fixed to the upper layer is higher than that on the back surface fixed to the lower layer, and shear force acts on the foam resin of the intermediate layer.
- a component force that pulls the intermediate layer upward is generated.
- the restoring property of the cushion member is improved, the generation of wrinkles at the time of no load is reduced, and it is useful for preventing sagging, and the stroke characteristic (compression characteristic) in the thickness direction is apparently increased.
- the cushion member is preferably stretched between the frames by folding the cushion so that the upper layer at the edge is on the front side and the lower layer on the back side.
- the circumference of the upper layer is longer than that of the lower layer when stretched, and the above-described functions and effects are easily achieved.
- FIG. 1A is a plan view showing a cushion member according to one aspect of an embodiment of the present invention
- FIG. 1B is a sectional view taken along line AA in FIG. (C) is a figure for demonstrating the state which extended
- FIG. 2A is a plan view showing a cushion member according to another aspect of the embodiment of the present invention
- FIG. 2B is a sectional view taken along line AA in FIG. (C) is a figure for demonstrating the state which extended
- FIG. 3 is a diagram for explaining a configuration of a three-dimensional solid knitted fabric.
- FIG. 4 is a diagram illustrating an example of the knitted fabric structure of the ground knitted fabric.
- FIG. 4 is a diagram illustrating an example of the knitted fabric structure of the ground knitted fabric.
- FIG. 5 is a diagram showing another example of the knitted fabric structure of the ground knitted fabric.
- 6 (a) to 6 (c) are diagrams showing examples of how to arrange the connecting yarns.
- FIGS. 7A and 7B are diagrams for explaining a test method in a test example.
- FIGS. 8A and 8B are diagrams for explaining the method of Test Example 1 for testing the cushion member having the structure shown in FIG.
- FIGS. 9A and 9B are views for explaining the method of Test Example 2 for testing the cushion member having the structure shown in FIG.
- FIG. 10 is a diagram showing a load-deflection characteristic obtained by pressing a cushion member using product number: T27016B as a lower layer with a pressure plate having a diameter of 30 mm in Test Example 1.
- FIG. 11 is a diagram showing a load-deflection characteristic obtained by pressing a cushion member using a product number: T27016B as a lower layer with a pressure plate having a diameter of 98 mm in Test Example 1.
- FIG. 12 is a diagram showing a load-deflection characteristic obtained by pressing a cushion member using a product number: T27016B as a lower layer with a pressure plate having a diameter of 200 mm in Test Example 1.
- FIG. 13 is a diagram showing a load-deflection characteristic obtained by pressing a cushion member using product number: Y27013NP as a lower layer with a pressure plate having a diameter of 30 mm in Test Example 1.
- FIG. 14 is a diagram showing a load-deflection characteristic obtained by pressing a cushion member using product number: Y27013NP as a lower layer with a pressure plate having a diameter of 98 mm in Test Example 1.
- FIG. 15 is a diagram showing a load-deflection characteristic obtained by pressing a cushion member using product number: Y27013NP as a lower layer with a pressure plate having a diameter of 200 mm in Test Example 1.
- FIG. 16 is a diagram showing a load-deflection characteristic when the cushion member is pressed with a pressure plate having a diameter of 30 mm in Test Example 2.
- FIG. 17 is a diagram showing a load-deflection characteristic when the cushion member was pressed with a pressure plate having a diameter of 98 mm in Test Example 2.
- FIG. 15 is a diagram showing a load-deflection characteristic obtained by pressing a cushion member using product number: Y27013NP as a lower layer with a pressure plate having a diameter of 200 mm in Test Example 1.
- FIG. 18 is a diagram showing a load-deflection characteristic when the cushion member is pressed with a pressure plate having a diameter of 200 mm in Test Example 2.
- FIG. 19 is a diagram showing a load-deflection characteristic when the cushion member is pressed with a pressure plate having a diameter of 30 mm in Test Example 3.
- FIG. 20 is a diagram showing a load-deflection characteristic obtained by pressing the cushion member with a pressure plate having a diameter of 98 mm in Test Example 3.
- FIG. 21 is a diagram showing a load-deflection characteristic obtained by pressing the cushion member with a pressure plate having a diameter of 200 mm in Test Example 3.
- FIG. 22 is a diagram showing the load-deflection characteristics when the cushion member was pressed with a pressure plate having a diameter of 30 mm in Test Example 4.
- FIG. 23 is a diagram showing a load-deflection characteristic in Test Example 4 in which the cushion member is pressed with a pressure plate having a diameter of 98 mm.
- FIG. 24 is a diagram showing a load-deflection characteristic in Test Example 4 in which the cushion member is pressed with a pressure plate having a diameter of 200 mm.
- FIG. 25 is a diagram showing a load-deflection characteristic when the cushion member was pressed with a pressure plate having a diameter of 30 mm in Test Example 4.
- FIG. 26 is a diagram showing a load-deflection characteristic when the cushion member is pressed with a pressure plate having a diameter of 98 mm in Test Example 4.
- FIG. 27 is a diagram showing a load-deflection characteristic when the cushion member was pressed with a pressure plate having a diameter of 200 mm in Test Example 4.
- FIG. 28 is a diagram showing tensile properties of a two-dimensional or three-dimensional fabric used as an upper layer or a lower layer in each test example.
- FIG. 29 is a view showing an example of a cushion member in which an intermediate layer is formed into a plurality of layers.
- FIG. 1 and 2 are views showing a cushion member 1 according to an embodiment of the present invention.
- the cushion member 1 has a three-layer structure having an upper layer 20 and a lower layer 30 with an intermediate layer 10 interposed therebetween.
- the intermediate layer 10 is made of a foamed resin, for example, polyurethane foam.
- the intermediate layer 10 is formed with a thickness of about 2 to 10 mm, for example.
- the upper layer 20 is formed from a two-dimensional or three-dimensional fabric, and includes a woven fabric, a non-woven fabric, a knitted fabric, leather, and synthetic leather.
- FIG. 1 is a diagram showing an embodiment using a two-dimensional fabric as the upper layer 20
- FIG. 2 is a diagram showing an embodiment using a three-dimensional fabric (three-dimensional solid knitted fabric) as the upper layer 20. is there.
- the lower layer 30 is formed of a two-dimensional or three-dimensional fabric, similar to the upper layer, and includes woven fabric, non-woven fabric, knitted fabric, leather, and synthetic leather.
- the upper layer 20 and the lower layer 30 are preferably those in which the upper layer 20 has higher stretchability (restoring force) in the surface direction than the lower layer 30.
- a three-dimensional solid knitted fabric 50 as disclosed in JP-A-2002-331603 can be used as the three-dimensional fabric that can be used for the upper layer 20 or the lower layer 30.
- the three-dimensional three-dimensional knitted fabric 50 reciprocates between the pair of ground knitted fabrics 51 and 52 and the pair of ground knitted fabrics 51 and 52 to couple them together.
- the knitted fabric has a three-dimensional three-dimensional structure having a large number of connecting yarns 53.
- Each of the ground knitted fabrics 51 and 52 is formed by, for example, a flat knitted fabric structure (fine mesh) that is continuous in both the wale direction and the course direction from a yarn obtained by twisting single fibers (FIG. 4). (See Fig. 5). Alternatively, a yarn formed by twisting single fibers into a stitch structure (see Fig. 5) having a honeycomb (hexagonal) mesh is employed.
- this knitted fabric structure is arbitrary, and it is also possible to adopt a knitted fabric structure other than a fine-grained structure or a honeycomb shape, or to make the two ground knitted fabrics 51 and 52 different knitted fabric structures, or to both The combination is arbitrary, such as organization.
- the surface formed in the stitches of the honeycomb-like structure is a fixing surface to the intermediate layer 10
- the intermediate layer 10 is laminated and fixed by frame lamination as described later
- the adhesive at the time of joining by adhesion becomes easy to enter.
- the rigidity of the three-dimensional solid knitted fabric can be adjusted by making the structure relatively coarse like a honeycomb-like structure, or fine like a fine structure.
- the overall rigidity is increased by laminating with the intermediate layer 10, but when a relatively coarse mesh such as a honeycomb-like structure is used, if the yarn used is the same material, A soft and high fit can be formed.
- the connecting yarn 53 is knitted between two ground knitted fabrics 51 and 52 such that one ground knitted fabric 51 and the other ground knitted fabric 52 maintain a predetermined distance. Any of the filaments may be used. However, by adopting a configuration in which a part of the intermediate layer 10 penetrates into the three-dimensional solid knitted fabric, it is possible to impart a predetermined rigidity even when using a multifilament with a softer spring feeling than a monofilament. is there. There are various arrangement methods (pile structures) when the connecting yarn 53 is arranged to reciprocate between the ground knitted fabrics 51 and 52, and there are an X shape, a straight shape, and the like. An example is shown in FIGS. 6 (a) to 6 (c).
- 6 (a) to 6 (c) show how the connecting yarns 53 are arranged in the three-dimensional solid knitted fabric used in the test examples described later.
- the left side of each figure shows the roll direction (the three-dimensional solid knitted fabric). It is sectional drawing along the winding direction of the roll original roll, and the right side of each figure is sectional drawing along the width direction orthogonal to a roll direction.
- the material of the ground yarn or the connecting yarn 53 forming the ground knitted fabrics 51 and 52 is not particularly limited, and examples thereof include synthetic fibers such as polypropylene, polyester, polyamide, polyacrylonitrile, rayon, and recycled fibers, Examples include natural fibers such as wool, silk, and cotton.
- the said raw material may be used independently and these can also be used together arbitrarily.
- thermoplastic polyester fibers represented by polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polyamide fibers represented by nylon 6, nylon 66, etc., polyolefins represented by polyethylene, polypropylene, etc. Fiber or a combination of two or more of these fibers. Polyester fibers are suitable because of their excellent recyclability.
- the shape of the ground yarn or the connecting yarn is not limited, and may be a round cross-section yarn or a modified cross-section yarn.
- the front surface side and the upper layer 20 of the intermediate layer 10 and the back surface side and the lower layer 30 of the intermediate layer 10 are fixed by bonding, frame laminating, or the like, respectively.
- a part of the intermediate layer 10 in the thickness direction enters the gap between the yarns of the fabric constituting the upper layer 20 or the lower layer 30, and is fixed, thereby forming the yarn constituting the upper layer 20 or the lower layer 30.
- Elasticity is imparted to the bonding force between them, and the spring characteristics (spring constant) due to tension, compression force, and tensile force increase, which is preferable.
- a part of the polyurethane foam constituting the intermediate layer 10 can be melted by utilizing the difference in melting point, and is fixed in a state of entering the gap between the yarns of the upper layer 20 or the lower layer 30. Can be easily performed.
- the polyurethane foam that is the intermediate layer 10 penetrates into the gaps between the yarns and solidifies.
- the polyurethane foam has a configuration in which, in the three-dimensional solid knitted fabric 50, it enters from one ground knitted fabric 51 side adjacent to the intermediate layer 10 but does not reach between the yarns of the other ground knitted fabric 52.
- a more preferable penetration amount is in the range of 1/3 to 2/3 of the entire thickness of the three-dimensional solid knitted fabric 50 from the one side of the ground knitted fabric 51 adjacent to the intermediate layer 10.
- the spring characteristic when compressed in the thickness direction becomes too hard, and the surface tends to be wrinkled.
- the compression characteristics are higher than when the three-dimensional solid knitted fabric 50 or the polyurethane foam is used alone, while the three-dimensional solid knitted fabric 50 not integrated with the polyurethane foam.
- the connecting yarn 53 and the other ground knitted fabric 52 have their own spring characteristics and function their own compression characteristics, and the connecting threads 53 are inclined to increase the tensile characteristics.
- the three-dimensional solid knitted fabric 50 is more than the single one.
- One having a low tensile property for example, one using a multifilament instead of a monofilament as the connecting yarn 53
- This is not limited to the three-dimensional solid knitted fabric 50, and the same applies when a two-dimensional fabric or another three-dimensional fabric is used.
- the adhesive penetrates into the gaps between the yarns of the fabric constituting the upper layer 20 or the lower layer 30. Thus, it is preferable to fix.
- the cushion member 1 described above is provided as a tension structure by being stretched between arbitrary frames arranged at a predetermined interval.
- the arbitrary frame is between the frames constituting the seat cushion portion (for example, between a pair of side frames or near the frame and the rear edge portion disposed near the front edge portion).
- the frames constituting the seat back part for example, between a pair of side frames, between the frame arranged near the upper edge and the frame arranged near the rear edge
- it is stretched between arbitrary frames constituting the headrest part, armrest part or ottoman part, and used as a cushion member constituting the headrest part, a cushion member constituting the armrest part, or a cushion member constituting the ottoman part. it can.
- the end edges 1a to 1d in the extending direction of the cushion member 1 are attached to the frame to be extended, for example, as shown in FIGS. 1 (b) and 2 (b), on the side of the seat cushion portion.
- the upper layer 20 in the edge portions 1a and 1b is bent and fixed to the frames 100a and 100b in a direction in which the lower layer 30 becomes the back side.
- the peripheral length of the upper layer 20 becomes longer than the peripheral length of the lower layer 30 in the bent portion.
- the tension in the surface direction of the upper layer 20 increases and becomes larger than the tension in the surface direction of the lower layer 30.
- a force acting on the intermediate layer 10 is shown in a deformed state and a deforming direction), and a component force for lifting the cushion member 1 upward is generated. Therefore, according to the present embodiment, the stroke characteristics (compression characteristics) in the thickness direction of the cushion member 1 itself are improved.
- the cushion member 1 is stretched around a fixed jig 200 having substantially square frames 200a to 200d in plan view as shown in FIG. Specifically, as shown in FIG. 7, the edge portions 1a to 1d along the four sides of the cushion member 1 are provided on the frames 200a to 200d of the fixing jig 200, and the upper layer 20 at the edge portions 1a to 1d is provided on the surface. On the side, the lower layer 30 was fixed on the back side. The cushion member 1 was stretched on the frames 200a to 200d with an elongation of 5% or less.
- the cushion member 1 having the configuration shown in FIG. 1 was used. That is, the cushion member 1 has an upper layer 20 and a lower layer 30 on the front side and the back side of the intermediate layer 10 made of polyurethane foam (hardness: 83.5 N, density: 0.02 g / cm 3 ) having a thickness of 3 mm or 5 mm. Although laminated, a two-dimensional fabric having a thickness of 1 mm (manufactured by Seiren Co., Ltd., product number: C009A) was used as the upper layer 20.
- a two-dimensional fabric having a thickness of 1 mm (manufactured by Seiren Co., Ltd., product number: C009A) was used as the upper layer 20.
- the lower layer 30 is formed by laminating a three-dimensional solid knitted fabric (product number: T27016B, manufactured by Asahi Kasei Corporation) having a thickness of 5 mm and a two-dimensional fabric (product number: Y27013NP, manufactured by Asahi Kasei Co., Ltd.) having a thickness of 1 mm. I prepared what I did. Moreover, the upper layer 20 and the lower layer 30 were integrated with each other with respect to the front surface side and the back surface side of the intermediate layer 10. The cushion member using a three-dimensional solid knitted fabric (product number: T27016B) having a thickness of 5 mm as the lower layer 30 is applied so that the adhesive enters between the yarns of one ground knitted fabric of the three-dimensional solid knitted fabric. And glued.
- a three-dimensional solid knitted fabric product number: T27016B, manufactured by Asahi Kasei Corporation
- Y27013NP manufactured by Asahi Kasei Co., Ltd.
- a circular pressure plate with a diameter of 30 mm and a diameter of 98 mm is brought into contact with the center of the cushion member 1 to apply a load up to 100 N, and a circular pressure plate with a diameter of 200 mm is applied.
- the load-displacement characteristic was measured when a load of 1000 N was applied after contact (the hatched lines shown in the portion of the intermediate layer 10 in FIG. 8 indicate the state in which the intermediate layer 10 is deformed due to the action of shearing force). Shows the direction of deformation). The results are shown in FIGS.
- FIG. 10 to FIG. 12 are data obtained by pressing with a pressure plate using the product number T27016B as the lower layer 30, and the symbol “T27016B-t3.0” is a polyurethane foam having a thickness of 3 mm as the intermediate layer 10.
- the symbol “T27016B-t5.0” is data when a polyurethane foam having a thickness of 5 mm is used as the intermediate layer 10.
- the symbol “T27016B” is data obtained by measuring a single three-dimensional solid knitted fabric (product number: T27016B) on the fixed jig 200. “Muscle characteristics” It is the data at the time of pressurizing with a pressure plate.
- FIGS. 13 to 15 show test results when product number Y27013NP is used as the lower layer 30.
- FIG. The symbol “Y27013NP-t3.0” is data when a polyurethane foam having a thickness of 3 mm is used as the intermediate layer 10
- the symbol “Y27013NP-t5.0” is a polyurethane foam having a thickness of 5 mm as the intermediate layer 10.
- the symbol “Y27013NP” is data obtained when the two-dimensional fabric alone is stretched on the fixed jig 200.
- Test Example 2 the load-deflection characteristic was measured for the cushion member 1 having the structure shown in FIG.
- the three-dimensional solid knitted fabric constituting the upper layer 20 used in Test Example 2 is manufactured by Asahi Kasei Co., Ltd., product number: T28019C8G, with a thickness of 7 mm, and this three-dimensional solid knitted fabric is the intermediate layer 10
- Test Example 1 was laminated and fixed on a polyurethane foam having a thickness of 3 mm or 5 mm (hardness: 83.5 N, density: 0.02 g / cm 3 ). At this time, the three-dimensional solid knitted fabric constituting the upper layer 20 was fixed so that the adhesive entered between the yarn of the ground knitted fabric adjacent to the intermediate layer 10.
- the three-dimensional solid knitted fabric used in Test Example 1 product number “T27016B” was used.
- the three-dimensional solid knitted fabric (T28019C8G) of the upper layer 20 and the three-dimensional solid knitted fabric (T27016B) of the lower layer 30 are in the roll direction (the winding direction of the roll of the three-dimensional solid knitted fabric).
- the intermediate layer 10 was laminated and fixed so as to have an orthogonal positional relationship.
- “Lami t3.0” is data of a layer laminated on a polyurethane foam having a thickness of 3 mm
- “Lami t5.0” is data of a layer laminated on a polyurethane foam having a thickness of 5 mm.
- Test Example 3 In Test Example 3, as in Test Example 2, the load-deflection characteristics were measured for the cushion member 1 having the structure shown in FIG. 2 employing a three-dimensional solid knitted fabric as the upper layer 20.
- the three-dimensional solid knitted fabric constituting the upper layer 20 used in Test Example 3 is manufactured by Asahi Kasei Co., Ltd., product number: T05112, with a thickness of 7 mm, and this three-dimensional solid knitted fabric is the intermediate layer 10
- Test Example 1 was laminated and fixed on a polyurethane foam having a thickness of 3 mm or 5 mm (hardness: 83.5 N, density: 0.02 g / cm 3 ).
- the three-dimensional solid knitted fabric constituting the upper layer 20 was fixed so that the adhesive entered between the yarn of the ground knitted fabric adjacent to the intermediate layer 10.
- the three-dimensional solid knitted fabric used in Test Example 1 product number “T27016B” was used.
- the three-dimensional solid knitted fabric (T05112) of the upper layer 20 and the three-dimensional solid knitted fabric (T27016B) of the lower layer 30 are laminated and fixed on a polyurethane foam having a thickness of 3 mm.
- the original three-dimensional knitted fabric was wound so that the roll direction of the original roll was orthogonally crossed, and the laminate fixed to the polyurethane foam having a thickness of 5 mm was arranged so that the roll directions were parallel.
- Test Example 4 the load-deflection characteristics of the cushion member 1 having the structure shown in FIG. 2 in which a three-dimensional solid knitted fabric was adopted as the upper layer 20 were measured.
- the three-dimensional solid knitted fabric constituting the upper layer 20 used in Test Example 4 is manufactured by Asahi Kasei Co., Ltd., product number: T05112, with a thickness of 7 mm, and this three-dimensional solid knitted fabric is the intermediate layer 10
- Test Example 1 was laminated and fixed on a polyurethane foam having a thickness of 3 mm or 5 mm (hardness: 83.5 N, density: 0.02 g / cm 3 ).
- the three-dimensional solid knitted fabric constituting the upper layer 20 was fixed so that the adhesive entered between the yarn of the ground knitted fabric adjacent to the intermediate layer 10.
- the 1-mm-thick two-dimensional fabric product number: Y27013NP manufactured by Asahi Kasei Co., Ltd.
- Test Example 4 the three-dimensional solid knitted fabric (T05112) of the upper layer 20 and the two-dimensional fabric (Y27013NP) of the lower layer 30 are placed in the roll direction (of the original roll of the three-dimensional solid knitted fabric or two-dimensional fabric).
- the intermediate layer 10 was laminated and fixed so that the winding direction was orthogonal.
- Test Example 5 In Test Example 5, as the three-dimensional solid knitted fabric of the upper layer 20, the same product used in Asahi Kasei Co., Ltd., product number: T28019C8G, with a thickness of 7 mm is used, and the upper layer 20 (T28019C8G) and the lower layer are used. 30 two-dimensional fabrics (Y27013NP) were laminated and fixed to the intermediate layer 10 such that their roll directions (winding directions of the rolls of the three-dimensional solid knitted fabric or two-dimensional fabric rolls) were parallel to each other. Except for the point, the test was performed under the same conditions as in Test Example 4. FIG. 25 to FIG. 27 show the results.
- “Lami t3.0” is data obtained by applying pressure up to about 1000 N.
- FIG. 29 shows an example thereof, and three first to third intermediate layers 511, 512, and 513 are provided.
- Each of the intermediate layers 511 to 513 has an upper layer on the front side and a lower layer on the back side.
- the lower layer of the first intermediate layer 511 and the upper layer of the second intermediate layer 512 are used together. It is composed of one layer (hereinafter, “first combined layer 541” for convenience).
- the lower layer of the second intermediate layer 512 and the upper layer of the third intermediate layer 513 are used in combination, and is composed of one layer (hereinafter, “second combined layer 542” for convenience).
- the upper layer of the first intermediate layer 511 located on the outermost side is indicated by reference numeral 520
- the lower layer of the third intermediate layer 513 is indicated by reference numeral 530.
- the above-described two-dimensional fabric or three-dimensional fabric is used as the upper layer 520, the first combined layer 541, the second combined layer 542, and the lower layer 530.
- the above-described two-dimensional fabric or three-dimensional fabric is used as the upper layer 520, the first combined layer 541, the second combined layer 542, and the lower layer 530.
- the upper layer 520 and the first combined layer 541 are orthogonal to each other, the second combined layer 542 is inclined by 45 degrees with respect to the first combined layer 541, and the lower layer 530 is the second combined layer.
- the layers 542 were arranged so as to be in a perpendicular positional relationship. As shown in FIG. 29, the fabric is made of multiple layers, and the positional relationship is shifted little by little, whereby the tension characteristic can be made more isotropic, and a tougher cushion member is obtained.
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Abstract
Description
前記クッション部材は、端縁部を、該端縁部における上層が表側に、下層が裏側になるように折り曲げて前記フレーム間に張設し、前記上層が前記下層よりも面方向の張力が高くなるように設定されることが好ましい。前記クッション部材は、前記発泡樹脂と前記上層又は前記発泡樹脂と前記下層とは、前記発泡樹脂の厚み方向の一部が、前記上層又は下層を構成する布帛の糸間の間隙に侵入して固着されていることが好ましい。前記上層又は下層を構成する布帛が、二次元布帛又は三次元布帛であることが好ましい。
前記上層又は下層を構成する布帛が三次元布帛であり、前記三次元布帛が、互いに離間して配置された一対のグランド編地と、該一対のグランド編地間を往復して両者を結合する多数の連結糸とを有し、前記中間層を構成する前記発泡樹脂の厚み方向の一部が、該中間層に隣接する前記三次元布帛の一方のグランド編地側から各糸間の間隙に侵入している一方、その侵入量が前記三次元布帛の他方のグランド編地の少なくとも一部に接触しない範囲であることが好ましい。前記三次元布帛の少なくとも一方のグランド編地の編地組織がハニカム状であることが好ましい。前記中間層を構成する発泡樹脂の厚み方向の一部の、前記三次元布帛の一方のグランド編地側からの侵入量が、前記三次元布帛の厚さの1/3~2/3の範囲であることが好ましい。前記中間層を構成する発泡樹脂が、ポリウレタンフォームであることが好ましい。
前記中間層を挟んだ上層及び下層が、それらの原反の巻き方向であるロール方向を基準とした互いの位置関係を所定の位置関係にして積層されることにより、面方向の張力の特性を異方性から等方性まで所定の特性に設定されることが好ましい。
前記中間層が2層以上あり、各中間層間に挟まれた層は、より上部の中間層の下層と、より下部の中間層の上層とが兼用された層になっていることが好ましい。また、前記クッション部材は、座席構造のシートクッション部、シートバック部、ヘッドレスト部、アームレスト部又はオットマン部を構成する各フレームに張設されるものであることが好ましい。
また、本発明の座席構造は、前記クッション部材が、シートクッション部、シートバック部、ヘッドレスト部、アームレスト部又はオットマン部を構成する各フレームに張設された座席構造であって、前記クッション部材が、前記上層を表側にして、前記上層が前記下層よりも面方向の張力が高くなるように、前記各フレームのうち所定間隔離間して配置されたフレーム間に張設することにより張力構造体として設けられるものであることを特徴とする。前記座席構造は、前記クッション部材の端縁部を、該端縁部における上層が表側に、下層が裏側になるように折り曲げて、前記クッション部材が、前記フレーム間に張設される構成であることが好ましい。
図7に示したような平面視で略正方形のフレーム200a~200dを有する固定ジグ200に、クッション部材1を張設した。具体的には、図7に示したように、クッション部材1の四辺に沿った端縁部1a~1dを固定ジグ200の各フレーム200a~200dに、端縁部1a~1dにおける上層20を表面側に、下層30を裏面側にして固着した。なお、クッション部材1は、フレーム200a~200dに、伸び率5%以下で張設した。
試験例2では、上層20として、三次元立体編物を採用した図2に示した構造のクッション部材1について荷重-たわみ特性を測定した。試験例2で用いた上層20を構成する三次元立体編物は、旭化成株式会社製、製品番号:T28019C8G、厚さ7mmのものであり、この三次元立体編物を、中間層10である試験例1と同様の厚さ3mm又は5mmのポリウレタンフォーム(硬度:83.5N、密度:0.02g/cm3)に積層して固着した。このとき、上層20を構成する三次元立体編物における中間層10と隣接するグランド編地の糸間に接着剤が侵入するように固着した。下層30は、試験例1で使用した三次元立体編物:製品番号「T27016B」を用いた。また、試験例2では、上層20の三次元立体編物(T28019C8G)と下層30の三次元立体編物(T27016B)とを、それらのロール方向(三次元立体編物のロール巻き原反の巻き方向)が直交の位置関係となるように中間層10に積層固着した。
試験例3では、試験例2と同様に、上層20として、三次元立体編物を採用した図2に示した構造のクッション部材1について荷重-たわみ特性を測定した。試験例3で用いた上層20を構成する三次元立体編物は、旭化成株式会社製、製品番号:T05112、厚さ7mmのものであり、この三次元立体編物を、中間層10である試験例1と同様の厚さ3mm又は5mmのポリウレタンフォーム(硬度:83.5N、密度:0.02g/cm3)に積層して固着した。このとき、上層20を構成する三次元立体編物における中間層10と隣接するグランド編地の糸間に接着剤が侵入するように固着した。下層30は、試験例1で使用した三次元立体編物:製品番号「T27016B」を用いた。また、試験例3では、上層20の三次元立体編物(T05112)と下層30の三次元立体編物(T27016B)とを、厚さ3mmのポリウレタンフォームに積層固着したものは、それらのロール方向(三次元立体編物のロール巻き原反の巻き方向)が直交の位置関係となるようにし、厚さ5mmのポリウレタンフォームに積層固着したものは、それらのロール方向が平行の位置関係となるようにした。
試験例4では、上層20として、三次元立体編物を採用した図2に示した構造のクッション部材1について荷重-たわみ特性を測定した。試験例4で用いた上層20を構成する三次元立体編物は、旭化成株式会社製、製品番号:T05112、厚さ7mmのものであり、この三次元立体編物を、中間層10である試験例1と同様の厚さ3mm又は5mmのポリウレタンフォーム(硬度:83.5N、密度:0.02g/cm3)に積層して固着した。このとき、上層20を構成する三次元立体編物における中間層10と隣接するグランド編地の糸間に接着剤が侵入するように固着した。下層30は、試験例1で使用した厚さ1mmの二次元の布帛(旭化成株式会社製、製品番号:Y27013NP)を用いた。また、試験例4では、上層20の三次元立体編物(T05112)と下層30の二次元の布帛(Y27013NP)とを、それらのロール方向(三次元立体編物又は二次元布帛のロール巻き原反の巻き方向)が直交の位置関係となるように中間層10に積層固着した。
試験例5では、上層20の三次元立体編物として、試験例2で用いたものと同じ旭化成株式会社製、製品番号:T28019C8G、厚さ7mmのものを用いると共に、この上層20(T28019C8G)と下層30の二次元の布帛(Y27013NP)とを、それらのロール方向(三次元立体編物又は二次元布帛のロール巻き原反の巻き方向)が平行の位置関係となるように中間層10に積層固着した点を除き、試験例4と同じ条件で試験を行った。図25~図27がその結果である。
1a~1d 端縁部
10 中間層
20 上層
30 下層
50 三次元立体編物
51,52 グランド編地
53 連結糸
200 固定ジグ
500 クッション部材
511~513 中間層
520 上層
530 下層
541 第1兼用層
542 第2兼用層
Claims (13)
- 少なくとも1層の中間層と、その中間層の上下に積層される上層及び下層の積層構造からなり、
前記中間層は、所定厚さの発泡樹脂で構成され、
前記上層及び下層は、前記中間層を構成する発泡樹脂の表面側及び裏面側にそれぞれ固着され、
前記上層を表側にして、前記上層が前記下層よりも面方向の張力が高くなるように、所定間隔離間して配置されたフレーム間に張設することにより張力構造体として設けられるクッション部材。 - 端縁部を、該端縁部における上層が表側に、下層が裏側になるように折り曲げて前記フレーム間に張設し、前記上層が前記下層よりも面方向の張力が高くなるように設定される請求項1記載のクッション部材。
- 前記発泡樹脂と前記上層又は前記発泡樹脂と前記下層とは、前記発泡樹脂の厚み方向の一部が、前記上層又は下層を構成する布帛の糸間の間隙に侵入して固着されている請求項1又は2記載のクッション部材。
- 前記上層又は下層を構成する布帛が、二次元布帛又は三次元布帛である請求項1~3のいずれか1に記載のクッション部材。
- 前記上層又は下層を構成する布帛が三次元布帛であり、
前記三次元布帛が、互いに離間して配置された一対のグランド編地と、該一対のグランド編地間を往復して両者を結合する多数の連結糸とを有し、
前記中間層を構成する前記発泡樹脂の厚み方向の一部が、該中間層に隣接する前記三次元布帛の一方のグランド編地側から各糸間の間隙に侵入している一方、その侵入量が前記三次元布帛の他方のグランド編地の少なくとも一部に接触しない範囲である請求項4記載のクッション部材。 - 前記三次元布帛の少なくとも一方のグランド編地の編地組織がハニカム状である請求項5記載のクッション部材。
- 前記中間層を構成する発泡樹脂の厚み方向の一部の、前記三次元布帛の一方のグランド編地側からの侵入量が、前記三次元布帛の厚さの1/3~2/3の範囲である請求項5又は6記載のクッション部材。
- 前記中間層を構成する発泡樹脂が、ポリウレタンフォームである請求項1~7のいずれか1に記載のクッション部材。
- 前記中間層を挟んだ上層及び下層が、それらの原反の巻き方向であるロール方向を基準とした互いの位置関係を所定の位置関係にして積層されることにより、面方向の張力の特性を異方性から等方性まで所定の特性に設定される請求項1~8のいずれか1に記載のクッション部材。
- 前記中間層が2層以上あり、各中間層間に挟まれた層は、より上部の中間層の下層と、より下部の中間層の上層とが兼用された層になっている請求項1~9のいずれか1に記載クッション部材。
- 座席構造のシートクッション部、シートバック部、ヘッドレスト部、アームレスト部又はオットマン部を構成する各フレームに張設されるものである請求項1~10のいずれか1に記載のクッション部材。
- 請求項1~10のいずれか1に記載のクッション部材が、シートクッション部、シートバック部、ヘッドレスト部、アームレスト部又はオットマン部を構成する各フレームに張設された座席構造であって、
前記クッション部材が、前記上層を表側にして、前記上層が前記下層よりも面方向の張力が高くなるように、前記各フレームのうち所定間隔離間して配置されたフレーム間に張設することにより張力構造体として設けられる座席構造。 - 前記クッション部材の端縁部を、該端縁部における上層が表側に、下層が裏側になるように折り曲げて、前記クッション部材が、前記フレーム間に張設される請求項12記載の座席構造。
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CN201280013695.6A CN103442620B (zh) | 2011-03-23 | 2012-03-23 | 缓冲部件以及坐席构造 |
US14/005,276 US9022481B2 (en) | 2011-03-23 | 2012-03-23 | Cushion member and seat structure |
JP2013506046A JP5922097B2 (ja) | 2011-03-23 | 2012-03-23 | クッション部材及び座席構造 |
MX2013010814A MX339443B (es) | 2011-03-23 | 2012-03-23 | Elemento de acojinamiento y estructura de asiento. |
EP12761287.7A EP2689691B1 (en) | 2011-03-23 | 2012-03-23 | Seat structure |
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JP6308905B2 (ja) | 2014-08-05 | 2018-04-11 | 東洋ゴム工業株式会社 | クッションパッド |
US10883205B2 (en) * | 2017-12-26 | 2021-01-05 | GM Global Technology Operations LLC | Technical knit archtectures for comfort seating |
US10982358B2 (en) | 2017-12-26 | 2021-04-20 | GM Global Technology Operations LLC | Multi-functional knitted textiles |
US10808339B2 (en) | 2017-12-26 | 2020-10-20 | GM Global Technology Operations LLC | Knitted structures for heat generation and distribution |
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EP2689691A4 (en) | 2014-10-29 |
MX339443B (es) | 2016-05-25 |
US9022481B2 (en) | 2015-05-05 |
JP5922097B2 (ja) | 2016-05-24 |
JPWO2012128370A1 (ja) | 2014-07-24 |
EP2689691A1 (en) | 2014-01-29 |
EP2689691B1 (en) | 2015-11-18 |
MX2013010814A (es) | 2013-10-07 |
US20140001814A1 (en) | 2014-01-02 |
CN103442620B (zh) | 2017-02-22 |
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