WO2002091884A1 - Structure matelassee - Google Patents

Structure matelassee Download PDF

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Publication number
WO2002091884A1
WO2002091884A1 PCT/JP2002/004653 JP0204653W WO02091884A1 WO 2002091884 A1 WO2002091884 A1 WO 2002091884A1 JP 0204653 W JP0204653 W JP 0204653W WO 02091884 A1 WO02091884 A1 WO 02091884A1
Authority
WO
WIPO (PCT)
Prior art keywords
elastic member
knitted fabric
cushion structure
cushion
dimensional knitted
Prior art date
Application number
PCT/JP2002/004653
Other languages
English (en)
Japanese (ja)
Inventor
Yoshiyuki Ueno
Etsunori Fujita
Seiji Kawasaki
Yumi Ogura
Miho Kikusui
Original Assignee
Delta Tooling Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Delta Tooling Co., Ltd. filed Critical Delta Tooling Co., Ltd.
Priority to DE60205885T priority Critical patent/DE60205885T2/de
Priority to KR1020037014507A priority patent/KR100607432B1/ko
Priority to US10/477,801 priority patent/US20040142619A1/en
Priority to EP02769594A priority patent/EP1388310B1/fr
Publication of WO2002091884A1 publication Critical patent/WO2002091884A1/fr

Links

Classifications

    • 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
    • A47C27/12—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with fibrous inlays, e.g. made of wool, of cotton
    • A47C27/122—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with fibrous inlays, e.g. made of wool, of cotton with special fibres, such as acrylic thread, coconut, horsehair
    • 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
    • A47C27/12—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with fibrous inlays, e.g. made of wool, of cotton
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B21/00—Warp knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
    • D04B21/10—Open-work fabrics
    • D04B21/12—Open-work fabrics characterised by thread material
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2403/00—Details of fabric structure established in the fabric forming process
    • D10B2403/02—Cross-sectional features
    • D10B2403/022—Lofty fabric with variably spaced front and back plies, e.g. spacer fabrics
    • D10B2403/0221—Lofty fabric with variably spaced front and back plies, e.g. spacer fabrics with at least one corrugated ply
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2505/00—Industrial
    • D10B2505/08—Upholstery, mattresses
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/10—Scrim [e.g., open net or mesh, gauze, loose or open weave or knit, etc.]
    • Y10T442/102—Woven scrim
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/40—Knit fabric [i.e., knit strand or strip material]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/40—Knit fabric [i.e., knit strand or strip material]
    • Y10T442/413—Including an elastic strand

Definitions

  • the present invention relates to a cushion structure including a three-dimensional body knitted fabric, and more particularly to a cushion structure suitable for manufacturing a seat structure or the like for reducing blood flow inhibition and muscle burden.
  • a three-dimensional knitted fabric is a three-dimensional structure in which a pair of ground knitted fabrics that are spaced apart from each other are connected with a number of connecting yarns to form a three-dimensional structure, and is excellent in breathability, body pressure dispersion characteristics, rebound resilience, and the like.
  • the reaction force from the cushion material (the hard cushion material mainly The strength and strength of the cushioning material, which is harder than the muscles but softer, mainly deforms in the shearing direction), resulting in large deformation of the muscles and compression, resulting in uneven blood flow and increased muscle burden.
  • the load characteristics of the cushioning material are significantly lower than those of the muscles, the deformation of the muscles is suppressed, and although the amount of deformation of the cushioning material is large, the amount of subsidence is large, so shearing is mainly performed. Strength works, which in turn leads to increased muscle strain.
  • the present invention has been made in view of the above points, and has as its object to provide a cushion structure that is effective in reducing blood flow disorders and muscle strain and preventing the occurrence of disorders caused by them, such as economy class syndrome. Make it an issue. Disclosure of the invention
  • the present inventors have conducted intensive studies. As a result, the load characteristics of a cushion material (elastic member) directly or indirectly in contact with muscles are approximated to the load characteristics of human muscles. Since the material deforms according to the shape of the muscle, we focused on the fact that even if the setting is not softer than necessary, it is effective in suppressing large deformation of the muscle and preventing blood flow disorders. In addition, we focused on the fact that the deformation of muscles protruding from bones and the like was reduced, and that it was effective in preventing local blood flow disturbance and the like.
  • the use of a three-dimensional three-dimensional knitted material that can exhibit high cushioning properties even when thin is used as the cushioning material (elastic member), so that the amount of deformation can be reduced.
  • the load characteristics are set to be softer than those in the pressurization process, so that the input from the cushion material to the muscle can be reduced.
  • the present inventor uses a three-dimensional knitted fabric as one of the cushioning materials (elastic members), and utilizes the hysteresis loss of the load characteristics in the pressurizing process (going process). Characteristics that are similar to the load characteristics of the muscles of the other person, and a softer response is obtained after the amount of displacement in the return stroke (return stroke) reaches a predetermined point in time. We considered that body movement could be induced by setting the load characteristics to have a small force. In addition, when the cushioning material comes into contact with the cushioning material due to a sitting motion or a standing motion, a load-like settling (stroke) of several mm to about several tens of millimeters is generated.
  • a load-like settling (stroke) of several mm to about several tens of millimeters is generated.
  • the present invention according to claim 1 is configured to include an elastic member made of a three-dimensional three-dimensional knitted fabric formed by connecting a pair of ground knitted fabrics spaced apart from each other with a connecting yarn.
  • an elastic member made of a three-dimensional three-dimensional knitted fabric formed by connecting a pair of ground knitted fabrics spaced apart from each other with a connecting yarn.
  • a panel constant in a pressure stroke is set in a range of 0.1 to 10 NZmm, and a displacement amount is 20 mm or less and a displacement amount is 2 mm at the latest in a return stroke.
  • the cushion structure is characterized in that the panel constant after returning to the above is set lower than the panel constant in the pressurizing process.
  • the cushion structure according to the first aspect wherein a panel constant in the pressurizing process is set in a range of 0.1 to 5 N / mm.
  • the present invention according to claim 3 provides the cushion structure according to claim 1 or 2, wherein the amount of hysteresis loss between the pressurizing step and the return step in the load characteristic is within a range of 40 N or less.
  • the elastic member made of the three-dimensional knitted fabric has a load characteristic when the three-dimensional knitted fabric is independently pressed by a compression plate having a diameter of 30 mm;
  • the panel feature is that the panel constant is less than 20 mm and the panel constant after returning to the displacement of 1 mm at the latest is lower than the panel constant of the pressing process in the overall load characteristics, and the reaction force is small.
  • a cushion structure according to any one of claims 1 to 3 is provided.
  • an uneven portion is provided on at least one surface, and the elasticity of the concave portion is different from that of the convex portion. Or, provide the cushion structure described in 5 above.
  • the other elastic member having a function of preventing bottoming is a net-like elastic member, a planar elastic member, or a mesh-like member supported via a metal panel.
  • the cushion structure according to claim 8 wherein the cushion structure is a planar elastic member.
  • the other elastic member which has a function of preventing bottoming with respect to an elastic member formed of a three-dimensional knitted fabric formed in a structure having a small reaction force, has a predetermined gap.
  • the present invention according to claim 11 is characterized in that, in addition to the elastic member made of the three-dimensional knitted fabric formed in a structure having a small reaction force and the other elastic member having a function of preventing bottoming, a reaction force
  • the elastic member formed of the three-dimensional knitted fabric formed into a small structure also has a high surface rigidity, and further another elastic member is laminated.
  • the cushion structure of the present invention is provided.
  • the present invention according to claim 12 is characterized in that an elastic member made of the three-dimensional knitted fabric formed in a structure having a small reaction force is laminated on the top of the further elastic member, and has a function of preventing bottoming. 12.
  • the cushion structure according to claim 11, wherein the other elastic member to be fulfilled is disposed below the further elastic member with a predetermined gap.
  • the present invention according to claim 13 is applicable to various seat structures including a vehicle seat and a furniture chair, or to a mat for bedding or sitting, according to any one of claims 1 to 12. Provide a cushion structure.
  • the present invention according to claim 14 provides a cushion structure according to claim 13 applied to an aircraft seat structure.
  • FIG. 1 is a diagram schematically showing a configuration of a cushion structure according to a first embodiment of the present invention.
  • FIG. 2 is a diagram schematically illustrating a configuration of a cushion structure according to a second embodiment of the present invention.
  • FIG. 3 is a diagram schematically illustrating a configuration of a cushion structure according to a third embodiment of the present invention.
  • FIG. 4 is a diagram schematically showing a configuration of a cushion structure according to a fourth embodiment of the present invention. .
  • FIG. 5 is a diagram schematically illustrating a configuration of a cushion structure according to a fifth embodiment of the present invention.
  • FIG. 6 is a cross-sectional view showing a configuration of an example of a three-dimensional knitted fabric usable in each of the above embodiments.
  • FIG. 7 is a diagram illustrating an example of one of the daland knitted fabrics.
  • FIG. 8 is a diagram showing an example of the other ground knitted fabric.
  • FIG. 9 is a diagram illustrating various arrangements of the connecting yarn.
  • FIG. 10 is a perspective view showing a three-dimensional three-dimensional knitted fabric having an uneven portion usable as an upper elastic member in each of the above embodiments.
  • FIG. 11 is a cross-sectional view of the three-dimensional knitted fabric shown in FIG.
  • FIG. 12 is a view for explaining the operation of the substantially arch-shaped spring element formed on the three-dimensional knitted fabric shown in FIG.
  • FIG. 13 is a view for explaining the operation of the substantially arched panel element formed on the three-dimensional knitted fabric shown in FIG.
  • FIG. 14 is a perspective view of another three-dimensional three-dimensional knitted article having no concave-convex portion usable as an upper elastic member in each of the above embodiments and used in Test Example 1.
  • FIG. 15 is a graph showing the load-displacement characteristics of the three-dimensional knitted fabric alone according to Test Examples 1 to 4.
  • FIG. 16 is a graph showing the load-displacement characteristics of the cushion structure according to each example.
  • FIG. 17 is a graph showing a load-displacement characteristic when a three-dimensional knitted fabric having an uneven portion is pressed by a compression plate having a diameter of 3 O mm.
  • FIG. 18 is a graph showing a load-displacement characteristic when a three-dimensional knitted fabric having an uneven portion is pressed by a compression plate having a diameter of 98 mm.
  • FIG. 19 is a graph showing a load-displacement characteristic when a three-dimensional knitted fabric having an uneven portion is pressed with a compression plate having a diameter of 20 O mm.
  • FIG. 20 is a diagram for explaining the operation of the seat cushion portion to which the cushion structure of the present invention is applied.
  • FIG. 21 is a diagram for explaining the operation of the seat cushion portion to which the cushion structure of the present invention is applied.
  • FIG. 22 is a view for explaining the operation of the seat back portion to which the cushion structure of the present invention is applied.
  • FIG. 23 is a view for explaining the operation of the seatback portion to which the cushion structure of the present invention is applied.
  • FIG. 24 is a diagram for explaining features of a seat to which the cushion structure of the present invention is applied.
  • FIG. 25 is a graph showing load-displacement characteristics of a seat cushion portion to which the cushion structure of the present invention is applied.
  • FIG. 26 is a graph showing a load-displacement characteristic of a seat back portion to which the cushion structure of the present invention is applied.
  • FIG. 27 is a graph showing vibration characteristics of a sheet to which the cushion structure of the present invention is applied.
  • FIG. 1 is a diagram showing a cushion structure 10 according to the first embodiment.
  • the cushion structure 10 according to the first embodiment is formed by vertically arranging two elastic members 11 and 12.
  • the upper elastic member 1 1 Is configured.
  • the present invention when the present invention is applied to a seat portion of a seat structure, it is stretched and stretched at a predetermined elongation rate between facing side frames (not shown) forming the seat structure.
  • the characteristics of the three-dimensional knitted fabric itself are fully utilized, and due to the elastic deformation in the thickness direction and in the plane direction during stretching, the characteristics of the three-dimensional knitted fabric approximate the muscle load characteristics in a small load area in the pressing process.
  • it is not desirable to stretch the structure by applying a high tension and it is preferable to stretch the structure at an elongation of less than 5%.
  • the lower elastic member 12 is formed of a mesh elastic member such as a pull-maflex or a planar elastic member.
  • the upper elastic member 11 is It is connected to the other end of the metal panel 15 via a metal panel 15 having one end engaged with a stretched side frame (not shown) or a frame material or the like provided below the side frame. Supported by matching.
  • the panel characteristics made by the lower elastic member 1 2 and the metal panel 15 are stronger than the upper elastic member 11 made of a three-dimensional knitted fabric, and the diameter when combined with the upper elastic member 11 is 98 mm It is desirable that the spring constant from 35 N to 100 N by the compression plate is similar to the spring constant of the buttocks muscle.
  • the upper elastic member 11 has high surface rigidity against pressure in a wide area in a region of 20 N or less, but the concave portion and the convex portions on both sides thereof are formed by a compression plate having a diameter of about 30 mm to 20 mm.
  • the partial panel constant measured when pressing near the skirt of the lower part is smaller than the panel constant created by the lower elastic member 12 and the metal panel 15 due to the shape factor of having the ridges composed of irregularities. It is set small. As a result, the above-mentioned load sag is generated, and when the protruding portion of the human body comes into contact with the human body, it becomes easy to partially sag (see FIG. 13), and the fit is improved.
  • the upper elastic member 11 made of a three-dimensional knitted fabric has a thickness of about 5 to 3 Omm, has a small displacement stroke in the thickness direction, and has a very small load characteristic in a small displacement area. Has almost no force and has load characteristics Therefore, when the applied load exceeds a predetermined value, a feeling of bottoming occurs. Therefore, the restoring force of the upper elastic member 11 is supplemented by the lower elastic member 12 and the metal panel 15 having a highly linear spring characteristic, and the elastic force of the lower elastic member 11 causes a sense of bottoming generated in a load region exceeding a predetermined level.
  • the lower elastic member composed of the net elastic member having planar rigidity and the planar elastic member alone has the spring characteristics formed by the lower elastic member 12 and the metal spring 15 described above may be employed. That is, it is also possible to use the lower elastic member alone having the panel characteristics of the metal panel and the panel characteristics having high surface rigidity. Of course, in this case, the lower elastic member is directly stretched with respect to the side frame.
  • the upper elastic member 11 and the lower elastic member 12 can be arranged so as to be in contact with each other when there is no load.However, for example, when applied to a seat portion of a seat structure, the upper elastic member 11 and the lower elastic member 12 should be slightly separated from each other. Is preferred.
  • the upper elastic member 11 itself has a predetermined stroke amount before coming into contact with the lower elastic member 12, so that the upper elastic member 11 1 is deformed in the thickness direction and stretched in the plane direction of the upper elastic member 11.
  • the fit in a small load area and a small displacement area can be further improved.
  • FIG. 2 is a view showing one aspect of the cushion structure 20 according to the second embodiment of the present invention.
  • the upper elastic member 21, the lower elastic member 22, and the intermediate elastic member 23 disposed between the two members have a three-layer structure.
  • the upper elastic member 21 is formed of a three-dimensional three-dimensional knitted article having a concave and convex portion, and has the same function as the upper elastic member 11 according to the first embodiment.
  • the lower elastic member 22 is formed of, for example, a net elastic member such as a pull-maflex formed by assembling metal wires in a net shape, or a planar elastic member such as a three-dimensional knitted fabric.
  • the lower elastic member 12 according to the first embodiment is provided with a function similar to that of the lower elastic member 12 according to the first embodiment.
  • the intermediate elastic member 23 is formed of a three-dimensional knitted fabric, and is disposed, for example, between side frames of a seat portion forming a seat structure so as to be stacked below the upper elastic member 21. Have been.
  • the intermediate elastic member 23 has a higher surface rigidity than the upper elastic member 21 provided so as to exhibit a soft load characteristic in a small load region as described above when the load region is equal to or more than a predetermined value. However, it prevents the sinking beyond necessity, increases the sense of stability when sitting or lying down by the sense of rigidity, and suppresses the feeling of bottoming of the upper elastic member 21 similarly to the lower elastic member 22. It is provided to reduce foreign body sensation due to metal panel 25 and side frames.
  • each side moves in the rotational direction so as to roll upward (in the normal direction) in the figure, and since little force is generated in the shearing direction, the input load is dispersed and the reaction force to the occupant is reduced. It can be very small. Therefore, the three-dimensional knitted fabric constituting the intermediate elastic member 23 may be provided with a higher tension than the upper elastic member 21 or may have a deformation tolerance (degree of freedom) so as to exhibit such a function. In order to raise the reaction force against humans, each side is arranged so that it is a free end.
  • the intermediate elastic member 23 may be any material as long as it has an elastic force capable of preventing the upper elastic member 21 from sinking more than necessary and exhibiting a predetermined rigidity, and is limited to a three-dimensional knitted fabric. is not.
  • a felt formed to a predetermined thickness can be used as the intermediate elastic member 33.
  • the structure of the upper elastic member 31 in the cushion structure 30 of the third embodiment shown in FIG. 3 and the structure of the lower elastic member 32 supported via the metal panel 35 are the same as those in the second embodiment. It is exactly the same as the form.
  • FIG. 4 is a view showing a cushion structure 40 according to a fourth embodiment of the present invention.
  • This cushion structure 40 is particularly suitable for use as a mat for bedding or the like, and includes an upper elastic member 41, an intermediate elastic member 43, and a lower elastic member. It is formed by laminating 42 up and down. Further, as described in the above embodiment, it is preferable that each of the elastic members 41 to 43 be disposed so as to be a free end without connecting each terminal portion, thereby providing an input load. By dispersing, the reaction force on people can be reduced. However, even when these elastic members 41 to 43 are connected by sewing or the like, the same deformation as when the ends of the elastic members 41 to 43 are used as free ends.
  • Each of the upper elastic member 41, the intermediate elastic member 43, and the lower elastic member 42 is made of a three-dimensional knitted fabric.
  • members having different load characteristics are laminated without being connected to each other. It consists of.
  • the upper elastic member 41 like the upper elastic member 11 of the first embodiment, the upper elastic member 21 of the second embodiment, and the upper elastic member 31 of the third embodiment, has a load characteristic.
  • the cushion structure 40 is provided with a function of approximating the load characteristics of the muscle during the pressurizing process of the sex and reducing the reaction force in a small displacement area in the returning process. Therefore, the upper elastic member 41 is set to have a low panel constant and a soft load characteristic.
  • FIG. 4 unlike the ones shown in FIGS. 1 to 3, no irregularities are formed.
  • the convex portion is formed in a substantially arcuate cross section between the adjacent concave portions, so that the connecting yarn between the ground knitted fabrics is disposed at an inclination, and the convex portion is formed.
  • Functions to form one-third arched panel and can utilize its elasticity in the bending direction and the horizontal direction. For this reason, in a structure with irregularities, it is easy to set a soft panel constant that is similar to the load characteristics of human muscles and reduces the reaction force even if the deformation is constant, and has a load-like sag characteristic. Can be.
  • the connecting yarn is disposed between the opposing daland knitted fabrics without much inclination compared with the case where the uneven portion is formed, and the connecting yarn is mainly provided.
  • the load characteristics will be determined by the flexural strength.
  • the connecting yarn is arranged so as to be arranged at a predetermined inclination in advance at the time of knitting.
  • the three-dimensional knitted fabric In order to make the three-dimensional knitted fabric have a structure with a soft spring feeling depending on the knitting structure, in addition to the thickness and length of the connecting yarn, the arrangement density of the connecting yarn, the material of the connecting yarn, and the ground knitting. Any one of the following: the stitch shape of the ground, the stitch size of the ground knit, the material of the ground yarn constituting the ground knit, and the fastening force at the joint between the connecting yarn and the ground knit. It can be prepared by a combination of two or more components. Of course, even in the three-dimensional three-dimensional knitted fabric having the irregularities, even by adjusting the similar elements, a structure having various spring feelings can be obtained even if the widths of the irregularities are the same.
  • the intermediate elastic member 43 like the intermediate elastic members 23, 33 according to the second and third embodiments, has a soft load characteristic in a small load region when the load region becomes a predetermined value or more.
  • the upper elastic member 41 provided so as to exert more force than necessary, and increases the sense of stability when sitting or lying down by the displacement created by its free end and the rigidity of the elastic member itself.
  • the lower elastic member 42 and the upper elastic member 41 are provided to suppress the feeling of bottoming.
  • the lower elastic member 42 is disposed to prevent a feeling of bottoming by an elastic force.
  • a three-dimensional three-dimensional knitted fabric having a panel characteristic that is more linear than that of the member 31 is employed.
  • the intermediate elastic member 43 and the lower elastic member 42 in the fourth embodiment the material is not limited to the three-dimensional knitted fabric, and may be replaced with another member having the above-described predetermined characteristics, for example, felt, polyurethane foam, or the like.
  • FIG. 5 is a view showing a cushion structure 50 according to a fifth embodiment of the present invention.
  • the cushion structure 50 has a configuration suitable for use as a mat for bedding and the like, and includes six elastic members 51 to 56 made of a three-dimensional knitted fabric. Are vertically stacked.
  • the first elastic member 51 arranged at the top and the sixth elastic member 56 arranged at the bottom are similar to the upper elastic member 11 and the like of the first embodiment. It is formed from a three-dimensional three-dimensional knitted fabric having irregularities, and has a function to approximate the muscle load characteristics in a small load region in the pressing process of the load characteristics and to reduce the reaction force in a small displacement region in the return stroke. The rigidity over a large area is high, but the partial panel constant of the compression plate with a diameter of 3 Omm is low, and the load characteristics are set soft.
  • the fourth fourth elastic member 54 has a function corresponding to the intermediate elastic member 23 or the like in the above-described second embodiment. Prevents the first and sixth elastic members 51, 56 provided to exhibit soft load characteristics from sinking more than necessary, and increases the sense of stability when sitting or lying down due to its rigidity. At the same time, it is provided to disperse the load and suppress the reaction force to the human and the feeling of bottoming.
  • the third elastic member 53 and the fifth elastic member 55 have the same panel characteristics as the panel characteristics formed by the lower elastic member 12 and the metal panel 15 according to the first embodiment.
  • the load characteristics of the compression plate with a diameter of 98 mm are similar to the load characteristics of the gluteal muscles in the region of 35 N or more and 10 ON or less.
  • the second to fifth elastic members 52, 5 disposed between the first elastic member 51 and the sixth elastic member 56 3, 54, 55 may be any as long as any of them can mainly supplement the sense of rigidity and any of the other can mainly exhibit a high spring feeling, and the lamination order and the number of laminations are not limited. .
  • the terminal portion in order to enhance the load distribution function, it is preferable that the terminal portion be a free end as in the above-described fourth embodiment.
  • the structure of the original three-dimensional knitted fabric 100 will be described with reference to FIGS.
  • the three-dimensional three-dimensional knitted fabric 100 has a pair of ground knitted fabrics 110, 120 arranged apart from each other, and a pair of ground knitted fabrics 110, 120. It is composed of a three-dimensional three-dimensional structure having a large number of connecting yarns 130 that reciprocate between and join the two.
  • the daland knitted fabric 110 has a flat knitted fabric structure (fine) that is continuous in both the ale direction and the course direction. Is formed.
  • the other ground knitted fabric 120 has a honeycomb-shaped (hexagonal) mesh made of a twisted short fiber, for example, as shown in FIG. It has a stitch structure larger than zero.
  • this knitted fabric structure is merely an example, and a fine-grained structure—a knitted fabric structure other than a cam-shaped structure can be adopted.
  • the connecting yarn 130 is formed between the pair of ground knitted fabrics 110 and 120 so that one of the darn knitted fabrics 110 and the other of the durand knitted fabrics 120 maintain a predetermined distance.
  • a predetermined rigidity is given to the three-dimensional three-dimensional knitted fabric 100, which is a three-dimensional mesh unit.
  • the thickness and the like of the ground yarn forming the ground knitted fabric 110 and 120 are not particularly limited, and the knitting work can be performed while the waist strength required for the three-dimensional knitted fabric can be provided. Those that do not become difficult are selected. Also, as a ground thread Although it is possible to use a monofilament yarn, it is preferable to use a multifilament yarn / spun yarn from the viewpoints of texture and softness of surface feel. As the connecting yarn 130, a monofilament yarn is preferably used, and a yarn having a thickness in the range of 167 to 110 decitex is preferable.
  • Multifilament ⁇ cannot provide good cushioning with good restoring power, and if the thickness is less than 167 dtex, it will be difficult to obtain stiffness, and if the thickness is more than 1100 dtex, This is because it is too hard to obtain a proper paneling property (cushioning property). That is, by adopting the monofilament yarn in the above range as the connecting yarn 130, the load of the occupant can be reduced by the deformation of the stitches constituting the ground knitted fabrics 110, 120 and the connecting yarn 130. It can be supported by the restoring force of the adjacent connecting yarn 130 which gives the falling and buckling characteristics and the paneling characteristics to the buckling characteristics, that is, it can be supported by the buckling characteristics having the restoring force. A soft structure having soft panel characteristics and no stress concentration can be obtained. In the case where the concave and convex portions are formed, a panel element having a substantially arch-shaped cross section can be formed, as described later, so that soft panel characteristics can be imparted.
  • the material of the ground yarn or the connecting yarn 130 is not particularly limited.
  • synthetic fibers such as polypropylene, polyester, polyamide, polyacrylonitrile, rayon and the like, and recycled fibers, wool, silk, cotton, etc. Fiber.
  • the above materials may be used alone or in combination.
  • thermoplastic polyester fibers such as polyethylene terephthalate (PET) and polybutylene terephthalate (PBT), polyamide fibers such as nylon 6 and nylon 66, polyethylene, polypropylene, etc. It is a representative polyolefin fiber or a combination of two or more of these fibers. Note that polyester fibers are excellent in recyclability and are suitable.
  • the yarn shape of the ground yarn or the connecting yarn 130 is not limited, and may be a round cross-section yarn or a modified cross-section yarn.
  • the way of arranging the connecting yarns 130 is as follows.
  • the connecting yarns 130 connecting the daland knitted fabrics 110, 120 are viewed from the side, more specifically, For example, they are classified into the types shown in FIG. (A) and (b) are straight types in which connecting yarns 130 are woven almost vertically between ground fabrics 110 and 120. Of these, (a) is a straight figure with a figure of eight. (B) is a simple straight knit.
  • (C) to (e) are cross types in which the connecting yarns 130 intersect halfway between the ground knitted fabrics 110 and 120, and (c) is a figure of eight.
  • (D) is a simple cloth, and (e) is a cross (double cross).
  • the connecting yarns 130 are arranged diagonally with the connecting yarns 130 crossing each other, the connecting yarns 130 are almost placed between the ground knitted fabrics 110, 120.
  • the buckling strength of each connecting thread 130 maintains a sufficient restoring force while providing a soft panel with a large compression ratio. Can be granted.
  • the three-dimensional three-dimensional knitted fabric 100 described above is processed into a structure having a concave portion 150 and a convex portion 160 as shown in FIG. 10 and FIG. That is, the three-dimensional three-dimensional knitted fabric 100 is processed at predetermined intervals along the course direction so that a pair of ground knitted fabrics 110, 120 spaced apart are brought close to each other. 50 are formed, and a convex portion 160 is formed between the adjacent concave portions 150 and 150.
  • the recess 150 can be formed from only one side of the pair of duland knitted fabrics 110 and 120, but must be formed from both sides as shown in FIGS. 10 and 11. Can also.
  • Means for forming the concave portion 150 by bringing the ground knitted fabrics 110 and 120 into close proximity to each other include welding means, adhesive means, sewing means by sewing, and fusion knitting fibers by ground knitting. Fused fibers are interposed between ground 110 and 120
  • a means for performing the joining can be used. Among them, it is preferable to use vibration welding means. This is because the rigidity of the welded part can be avoided and the joining strength is strong.
  • the connecting thread 130 disposed in the region is inclined or flexed at the portion where the recess 150 is formed.
  • the connecting yarns 130 are unevenly distributed so as to move to the region of the adjacent convex portion 160 via the 150.
  • the connecting yarns 130 in the vicinity are entangled with each other. To join.
  • the connecting yarn 130 is formed on both sides of the entangled portion 130a with the ground knitted fabric 110 or the duland knitted fabric 1 to be joined. With respect to 20, it becomes possible to function as independent panel elements (deformation elements). Therefore, as schematically shown in FIG.
  • the elastic modulus of the concave portion 150 and the elastic portion of the convex portion 160 are different from each other.
  • the buckling strength of the connecting yarn 130 is relatively reduced, and the buckling characteristics are less likely to appear.
  • the panel element having a substantially arch-shaped cross section, including the entangled connecting yarn 130 has a relatively large elastic function in the bending direction.
  • the panel characteristics of the convex portion 160 are smaller than those of a three-dimensional three-dimensional knitted fabric formed under the same conditions except that no convex and concave portions are formed, and the panel constant becomes smaller, and the convex portion is easily deformed from a small load region.
  • the buckling characteristics are less likely to appear.
  • the three-dimensional knitted fabric having the uneven portion has a smaller value of the maximum hysteresis loss amount than the case where the uneven portion is not formed, and the linearity is improved.
  • the normal three-dimensional three-dimensional knitted fabric has the above-described bending elasticity and the friction between the three-dimensional three-dimensional knitted fabrics having the unevenness due to the friction between the yarns when the connecting yarn 130 returns. Because of the action, the friction between the yarns in the concave portion further increases, and even when the load becomes zero at the time of return, it exhibits characteristics similar to a viscoelastic body in which return movement is delayed by hysteresis. As a result, the direction of the deformation changes according to the input, and the panel element and the damping element corresponding to the input act.
  • the connecting yarn 130 is entangled and joined in the concave portion 150, so that the elasticity that expands and contracts in a direction substantially orthogonal to the forming line of the concave portion 150 is also reduced. Granted. For this reason, when it is stretched on a seat frame or the like with a seat structure, it has a spring property in the bending direction caused by a panel element with a substantially arch-shaped cross section, and an elasticity (panel) generated in a plane direction substantially perpendicular to this. ) Is added by the connecting yarn forming a panel element having a substantially arched cross section, and this elongation further contributes to lowering the panel constant.
  • the damping characteristics are increased by the characteristics similar to the viscoelastic body due to the increase in the friction between the yarns. Accordingly, the upper elastic member 11 and the intermediate elastic members 23, 33 have a predetermined gap with respect to the lower elastic members 12, 22, 22 shown in the first to third embodiments, respectively.
  • the upper elastic members 11, 21, 31 made of a three-dimensional three-dimensional knitted fabric with irregularities function effectively, and the delay characteristics of the return operation are more remarkable. And the damping ratio also increases.
  • each of the upper elastic members 11, 21, 31, 41 of the above embodiments and the fifth embodiment has soft spring characteristics and reduce the reaction force at a predetermined displacement or less, the upper elastic members 1 1, 2 1, 31, and 4 If the deformation amount of 1 mag is large, a shearing force acts on the muscle, which in turn leads to an increase in muscle load. Therefore, each of the upper elastic members 11, 21, 31, 41, etc. has a thickness including a pair of ground knitted fabrics (in the case where an uneven portion is formed, a convex portion is formed) so that the maximum deformation amount is not so large. (Thickness) is preferably in the range of 5 to 3 Omm.
  • the upper elastic member 11 of the first embodiment shown in FIG. 1, the upper elastic member 21 of the second embodiment shown in FIG. 2, and the upper elastic member 31 of the third embodiment shown in FIG. A three-dimensional knitted fabric usable as the upper elastic member 41 of the fourth embodiment shown in FIG. 4 and the first and sixth elastic members 51, 56 of the fifth embodiment shown in FIG. (Test Examples 1 to 4) Single load characteristics were measured. The measurement was performed by pressing a circular compression plate having a diameter of 200 mm at a speed of 5 OmmZ. The results are shown in FIG.
  • Test Examples 1 to 4 The production conditions for the three-dimensional knitted fabrics of Test Examples 1 to 4 are as follows.
  • the three-dimensional three-dimensional knitted fabric of Test Example 1 has no unevenness, and as shown in FIG. 14, a ridge (band-like portion) 200 formed at intervals of one or more pairs, and a space 210 between the ridges 200. It is a structure having In the space 210, a connecting portion 220 is formed over a range of one or several courses so as to bridge the adjacent ridges 200.
  • Test Examples 2 to 4 as shown in FIG. 10 and FIG. 11, all have uneven portions.
  • the comparative example was the same as the production conditions of Test Example 4 except that no recess was formed by vibration welding, and had a compression ratio of 13.2% and a compression modulus of 98.1%.
  • Test example 1 The comparative example was the same as the production conditions of Test Example 4 except that no recess was formed by vibration welding, and had a compression ratio of 13.2% and a compression modulus of 98.1%.
  • Knitting machine Double Russell knitting machine (9 gauge 2.54 cm, distance between pots 15 mm) ⁇ Ale density: 10 pieces 2.54 cm
  • Ground yarn of the other daland knit 660 decitex Zl92 f polyester, BCF multifilament (crimped yarn)
  • Total thickness of the stitch formed by the ground yarn and the connection yarn of one ground knitted fabric 1830 decitex (partially 300 decitex)
  • Knitting machine Double Russell knitting machine (9 gauge / 2.54 cm, distance between pots 15 mm) ⁇ Ale density: 10 pieces 2.54 cm
  • Finished thickness (distance between the surfaces of a pair of ground knitted fabrics): 11.5 mm Durand yarn of one daland knitted fabric: 1170 decitex / 96 f Polyester / BCF multifilament (crimped yarn)
  • Ground yarn of the other Durand fabric 660 decitex 1992 f polyester ⁇ BCF multifilament (crimped yarn) Connecting thread: 660 decitex Z 1 f polyester
  • Total thickness of the stitch formed by the ground yarn and the connecting yarn of one ground knitted fabric 1830 decitex (some 3000 decitetus)
  • Vibration welding condition of concave part Pressing force 18 2 kg f / amplitude Omm, time 2 sec-Width of convex part: 5 : ale
  • Knitting machine Double Russell knitting machine (9 gauge 254 cm, distance between pots 15 mm) ⁇ Enole density: 9.8 pieces / 2.54 cm
  • Finished thickness (distance between the surfaces of a pair of ground knitted fabrics): 1 2.05 mm Durand yarn of one daland knitted fabric: 1 1 70 dtex / 3 84 f Ground yarn of the other daland knitted fabric: 5 60 dtex Z 70 f
  • Vibration welding condition of concave part Pressing force 2 17 kg i / m amplitude Omm, time 0 sec
  • Knitting machine Double Russell knitting machine (9 gauge 25 4 cm, distance between pots 15 mm) ⁇ Ale density: 9 pieces / 2.5 4 cm
  • the structure of the Durand knitted fabric is a 1-repeat 4-course mesh, and the concave portion is a W atlas deformation
  • Total thickness of the stitch formed by the ground yarn and the connecting yarn of one ground knitted fabric 250 decitex (partially 320 decitex)
  • Compression elastic modulus of protrusion 94.3% Difference in compression ratio between convex and concave 310: 6.8%
  • the compression ratio and compression elastic modulus are measured by a test method based on JASO standard M404-84 “Compression ratio and compression elastic modulus”. Specifically, the thickness of each of the three samples cut into 50 mm X 50 mm when pressed under an initial load of 3.5 g / cm 2 (0.343 kPa) for 30 seconds in the thickness direction is measured. Next, measure the thickness when left for 10 minutes under a pressure of 200 g Z cm 2 (19.6 kPa). In the following, after standing for 10 minutes with the exception of the load, again 3. 5 g / c m '2 ( 0. 343 k P a)
  • Compression modulus (%) ⁇ (t '. One t,) (t._t) X 100
  • the spring property in the bending direction is mainly used by the spring element having a substantially arch-shaped cross section, and the hysteresis loss is lower than that of a normal three-dimensional knitted fabric having a high buckling characteristic and a high coefficient of friction due to plugging force. This is due to the fact that it becomes smaller and the linearity becomes higher.
  • the displacement in the return stroke is in the range of 2 to 1 mm.
  • the spring constant is about 40 NZmm, and the reaction force remains until the displacement reaches around 0 mm.
  • the spring constant became smaller than that of the pressure stroke in the entire cushion structure of each embodiment described later. It is lower than the constant, and has very small reaction force, which is almost zero.
  • This load characteristic was measured by pressing with a compression plate with a diameter of 200 mm at a speed of 50 mm, but as described above, the load characteristic of the three-dimensional knitted fabric alone was partially Since it is required to have a function to improve the fit in a small displacement region by deformation, the panel constant after that is approximately zero by the time the displacement in the above-mentioned return stroke is 2 Omm or less and 1 mm at the latest. It is preferable that such characteristics can be exhibited when pressed by a pressing plate having a diameter of 30 mm at a speed of 50 mmZ (see FIG. 13).
  • Load characteristics were measured for the entire cushion structure according to the fourth embodiment (Example 4) shown in FIG. 4 and the fifth embodiment (Example 5) shown in FIG.
  • the three-dimensional three-dimensional knitted fabrics used as the upper elastic members 11, 21, 31 in Examples 1 to 3 and the first and sixth elastic members 51, 56 in Example 5 were subjected to the test described above. This was adopted in Example 2, and was stretched at an elongation of 0% so that the longitudinal direction of the convex portion was along the gap direction between the side frames.
  • Example 4 the one employed in Test Example 1 above was used as the upper elastic member 41.
  • the measurement was performed by pressing a circular compression plate having a diameter of 98 mm from the surface of the three-dimensional knitted fabric to 100 N (about 10 kg) at a speed of 50 mm / min.
  • the results are shown in FIG.
  • the human hip muscles were similarly compressed using a 98 mm-diameter circular compression plate, and the load characteristics were measured. The results are shown in the same figure.
  • each of the lower elastic members 12, 22, and 32 of Examples 1 to 3 was provided with four pullmaflexes having the same degree of displacement and displacement, and supported by four metal panels on each of the right and left sides.
  • the metal spring used was a coil spring having a wire diameter of 2.6 mm, a coil length of 54.6 mm, an average coil diameter of 16.1 mm, a total number of turns of 20 and a spring constant of 0.55 NZmm.
  • the panel constants in the forward stroke (pressing stroke) of the load characteristics are all in the range of 0.1 to 10 N / mm, and the amount of hysteresis loss is 10 to 2 In the range of 0 N, and especially in the range of 35 to 10 ON which is equal to or higher than the equilibrium point on the load, the spring constant was low, approximating the spring characteristics of the muscle.
  • the preferred spring constant is in the range of 0.1 to 5 N, which is approximated by the muscle spring constant.
  • the hysteresis loss amount is more preferably in the range of 10 to 2 ON as a characteristic measured by pressing with a compression plate having a diameter of 98 mm as described above, but may be in the range of 4 ON or less. Les ,.
  • the displacement amount is 2 O mm or less, and until the displacement amount reaches 2 mm at the latest, for example, in the case of the third embodiment, the displacement amount is about 15 mm or less. It can be seen that it is possible to provide a paneling characteristic that does not cause the occupant to feel a reaction force.
  • each embodiment gives the occupant the sensation of being lightly touched in a small contact area, such as when a protruding part comes in contact with a bone of the human body, because a load sag occurs that is not performed.
  • a load sag occurs that is not performed.
  • the three-dimensional three-dimensional knitted article (Example 6) having the uneven portions as shown in FIGS. 10 and 11 was placed on a flat plate, and the load characteristics were measured while changing the size (diameter) of the pressing plate.
  • the results are shown in Figs. Fig. 17 shows the case where pressure is applied to 100 N using a 30 mm diameter pressing plate, and Fig. 18 shows the case where pressure is applied to 100 ON using a 98 mm diameter pressing plate.
  • Reference numeral 19 denotes a case where pressure was applied to 100 ON using a pressure plate having a diameter of 200 mm.
  • the speed of the pressing plate was 5 Om mZ.
  • a three-dimensional knitted fabric having no irregularities manufactured under exactly the same conditions as in Example 6 except that the irregularities were not formed by vibration welding (comparative example). ) was measured in the same manner.
  • the linearity is higher than that in the case of pressing with a diameter of 3 Omm in Fig. 17, and it can be seen that the surface stiffness is higher as the pressing area is larger.
  • the linearity is increased and the surface rigidity is increased as compared with the comparative example.
  • the structure having the uneven portion as in the sixth embodiment only gives the occupant a light touching feeling in a small contact area, and causes blood flow disturbance and muscle strain.
  • the cushion structure of the present invention when the protruding portion due to the bone abuts on the portion where the buttocks abut, that is, the seat cushion portion partially bends as shown in FIG. While it is possible to cause load-like sag, as shown in Fig. 21, when the load is further applied, the structure can support the load on a wide surface due to the size of the input shape (shape of the buttocks). It is preferable that This is because the buttocks have little physical difference in their shape and size, so that when the load exceeds a certain level, the paneling function is fully functioned and the vibration absorption performance is enhanced.
  • an elastic member having a small reaction force such as a three-dimensional three-dimensional knitted fabric having an uneven portion is replaced with another elastic member having a paneling property (pulmaflex or metal). It is preferable to use a panel on which other elastic members having high surface rigidity are arranged, if necessary.
  • the seat back part the difference in physique is more pronounced than in the buttocks due to the skeletal structure. Therefore, the seat back portion is formed.
  • the cushion structure it is preferable to focus on the function that can absorb physical differences.
  • both sides are drawn to the approximate center of the seatback center.
  • the entire body deflects backwards, which is insufficient in terms of the function of absorbing physique differences.
  • the three-dimensional knitted fabric described in each of the above embodiments is used and stretched at an elongation of less than 5%, as shown in FIG. As shown in Fig.
  • the cushion structure forming the seat back portion as the elastic member, for example, another elastic member is arranged as a structure for merely stretching the three-dimensional knitted fabric having the uneven portion described in the above embodiment. It is preferable that the structure be not.
  • the cushion structure mainly emphasizing the spring element can be formed in the seat cushion portion, and the cushion structure mainly emphasizing the damping element can be formed in the seat back portion. it can. Therefore, the present invention also has an advantage that a seat structure having such ideal functions can be easily and inexpensively realized by selecting a combination of cushion structures. .
  • a pull-maflex is supported by a total of eight metal panels (coil springs) on the left and right sides, and a three-dimensional three-dimensional knitted fabric with irregularities is placed on it.
  • the cushion structure according to the present invention was adopted (see Fig. 1). At the seat back portion, only a three-dimensional three-dimensional knitted fabric having uneven portions was used as the cushion structure according to the present invention to produce an automobile seat. The load characteristics were measured. The three-dimensional knitted fabric was supported on the seat frame at an elongation of 0%.
  • Fig. 25 shows the load characteristics of the cushion structure used in the seat cushion.
  • the broken line indicates the load characteristics of both the metal panel and the Pluma Flex
  • the thin solid line indicates the load characteristics of the entire cushion structure in which the three-dimensional knitted fabric is laminated
  • the thick solid line indicates the spring constant of the entire cushion structure (k ).
  • Fig. 26 shows the load characteristics of the cushion structure used in the seat back, that is, the cushion structure composed of only a three-dimensional three-dimensional knitted fabric having an uneven portion.
  • the thick solid line indicates the load characteristics of the buttocks.
  • the acceleration transmissibility exceeds 2.0, the ride comfort is adversely affected, but in this case, the vibration transmissibility was suppressed to low in each case.
  • the sheet using the polyurethane foam had a slightly lower vibration transmissivity and showed preferable characteristics.
  • the vibration that shakes the skeleton itself by vibrations is less than 2 Hz and 5 Hz that greatly affects the ride comfort. Therefore, it is desirable to avoid this range for the resonance peak, and to reduce the acceleration transmissibility of 6 to 8 Hz, which causes resonance with the built-in peak.
  • the resonance peak is set between 2 Hz and 5 Hz, and the frequency is set to be lower than those using the other two cushion structures. Have been. For this reason, the acceleration transmissibility in the range that resonates with the built-in 6 to 8 Hz is significantly smaller than that using the other two cushion structures, and when the cushion structure of the present invention is used, It can be seen that it is also very excellent in terms of vibration absorption performance.
  • the cushion structure according to the present invention includes an elastic member formed of a three-dimensional knitted fabric formed by joining a pair of ground knitted fabric members spaced apart from each other with a connecting yarn, and has a spring constant during a pressure stroke.
  • the panel constant after returning to the displacement of 2 O mm or less and at the latest to the displacement of 2 mm in the return stroke is set to 0.1 to 10 NZm.
  • the structure is set lower than the panel constant.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Of Fabric (AREA)
  • Mattresses And Other Support Structures For Chairs And Beds (AREA)
  • Springs (AREA)
  • Seats For Vehicles (AREA)

Abstract

La présente invention concerne une structure matelassée efficace pour atténuer un problème de circulation sanguine et les pressions imposées aux muscles, et pour empêcher le syndrome de classe économique ou analogue et les problèmes qui en résultent. La structure matelassée comprend des éléments élastiques supérieurs (11) chacun composés d'un tissu tricoté en 3 dimensions constitué par couplage, au moyen de fils de liaison, d'une paire de tissus tricotés de base disposés à distance l'un de l'autre. Selon l'invention, au cours d'un processus de pressurisation, un ressort constant dans une plage de charge initiale est soumis à une charge allant de 0,1-20 N/mm, et, durant un processus de rétablissement, un ressort constant après rétablissement d'un déplacement de 2 mm au moins, même lorsque le déplacement est supérieur à 20 mm, est établi pour se trouver à un niveau inférieur à celui du ressort constant dans la plage de charge initiale. En conséquence, un contact avec une matière matelassée lorsqu'une personne s'assied ou se met debout, provoque l'application d'une fatigue permanente (course) d'environ quelques mm à dix mm et quelques, ce qui permet d'améliorer la sensation d'adaptation (compatibilité) avec laquelle la personne se sent confortablement installée, et d'atténuer efficacement un problème de circulation sanguine et les pressions imposées aux muscles.
PCT/JP2002/004653 2001-05-16 2002-05-14 Structure matelassee WO2002091884A1 (fr)

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DE60205885T DE60205885T2 (de) 2001-05-16 2002-05-14 Kissenstruktur
KR1020037014507A KR100607432B1 (ko) 2001-05-16 2002-05-14 쿠션 구조
US10/477,801 US20040142619A1 (en) 2001-05-16 2002-05-14 Cushion structure
EP02769594A EP1388310B1 (fr) 2001-05-16 2002-05-14 Structure matelassee

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JP2001145896A JP4832663B2 (ja) 2001-05-16 2001-05-16 クッション構造
JP2001-145896 2001-05-16

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JP (1) JP4832663B2 (fr)
KR (1) KR100607432B1 (fr)
CN (1) CN1211041C (fr)
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WO (1) WO2002091884A1 (fr)

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US20040142619A1 (en) 2004-07-22
DE60205885D1 (de) 2005-10-06
KR100607432B1 (ko) 2006-08-02
EP1388310B1 (fr) 2005-08-31
CN1211041C (zh) 2005-07-20
KR20030093345A (ko) 2003-12-06
EP1388310A1 (fr) 2004-02-11
EP1388310A4 (fr) 2004-08-11
CN1511005A (zh) 2004-07-07
DE60205885T2 (de) 2006-06-14
JP4832663B2 (ja) 2011-12-07
JP2002336076A (ja) 2002-11-26

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