US20040055090A1 - Seat cushion structure - Google Patents

Seat cushion structure Download PDF

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Publication number
US20040055090A1
US20040055090A1 US10/214,152 US21415202A US2004055090A1 US 20040055090 A1 US20040055090 A1 US 20040055090A1 US 21415202 A US21415202 A US 21415202A US 2004055090 A1 US2004055090 A1 US 2004055090A1
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United States
Prior art keywords
filling material
seat cushion
cushion body
cushion structure
covering skin
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Granted
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US10/214,152
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US6687934B1 (en
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Tsun-Chi Liao
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Individual
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Individual
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Priority to US10/214,152 priority Critical patent/US6687934B1/en
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Publication of US6687934B1 publication Critical patent/US6687934B1/en
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    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C7/00Parts, details, or accessories of chairs or stools
    • A47C7/02Seat parts
    • A47C7/14Seat parts of adjustable shape; elastically mounted ; adaptable to a user contour or ergonomic seating positions
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C7/00Parts, details, or accessories of chairs or stools
    • A47C7/02Seat parts
    • A47C7/029Seat parts of non-adjustable shape adapted to a user contour or ergonomic seating positions

Definitions

  • the invention relates to a seat cushion structure and, more particularly, to a seat cushion structure that can provide comfortable seating and good heat dissipation.
  • a conventional stool is usually provided with flexible cushion 1 that has an upper surface on which the buttocks of the sat user rest.
  • the cushion 1 is conventionally made of a foamed material 2 that is outwardly covered with a covering skin 3 . If the user seats on the cushion 1 for a long time, the heat from the user's body is progressively transferred to the foamed material 2 of the cushion 1 . If the covering skin 3 is made of synthetic leather, it is not air permeable. When the user seats on the cushion 1 for a long time, the heat is therefore accumulated at the contact interface, which causes uncomfortable sweating.
  • a seat cushion structure of the invention comprises a cushion body, made of a foamed material, that has a top surface provided with two recessed cavities.
  • a flexible filling material is filled within the recessed cavities of the cushion body.
  • a covering skin is stretched to outwardly cover the flexible filling material and the cushion body, wherein an air gap is left between the flexible filling material and the covering skin.
  • FIG. 1 is a perspective view schematically illustrating a seat cushion structure of the prior art
  • FIG. 2 is an exploded view schematically illustrating a seat cushion structure according to an embodiment of the invention
  • FIG. 3 is a perspective view schematically showing the external aspect of a seat cushion structure according to an embodiment of the invention.
  • FIG. 4 is a cross-sectional view taken along the section 4 - 4 of FIG. 3;
  • FIG. 5 is a perspective view schematically illustrating the assembly of the seat cushion structure of the invention a stool.
  • the invention provides a seat cushion structure that comprises a cushion body 10 made of polyurethane (PU) foamed material.
  • a cushion body 10 made of polyurethane (PU) foamed material.
  • recessed cavities 11 are formed at the left and right sides of the top surface of the cushion body 10 that respectively have a profile compliant to the profile of the user's buttocks.
  • a covering skin 12 made of, for example, leather material, is stretched to outwardly cover the cushion body 10 , the covering skin 12 being partially in contact with the top surface of the cushion body 10 .
  • the recessed cavities 11 are filled with a flexible filling material 13 made of, for example, silicon resin that has a top surface spaced away from the covering skin 12 by an air gap L (see FIG. 4).
  • the covering skin 12 is preferably air-permeable and further provided with adequate elastic properties so that it is capable of stretching and contacting with the filling material 13 under pressure of the user's weight even if the user's buttocks are moved on the cushion body 10 .
  • the movement of the user's buttocks may be significant in certain situations such as when the user is a drummer who is practicing, in which case the cushion structure of the invention provides more particularly comfortable seating.
  • the covering skin 12 is further capable of separating from the surface of the filling material 13 to substantially restore the air gap L there between.
  • the air gap therefore provided, even when the covering skin 12 , under pressure of the user's weight, stretches and contacts with the filling material 13 , can dissipate the heat from the user's body transmitted through the seat contact to the cushion body 10 . Furthermore, the heat is all the more rapidly dissipated as the filling material 13 , made of polyurethane, does not easily retain heat, which promotes head dissipation through the air gap and the air-permeable covering skin 12 . Therefore, a cool and comfortable feeling is obtained when the user seats on the cushion body 10 .
  • the two recessed cavities 11 are designed in accordance with the profile of the human buttocks and their specific curvature, which therefore enables an optimal pressure distribution of the user's weight at the contact interface with the cushion body 10 .
  • the foamed material of the cushion body 10 formed in a single body, is relatively cheap and further is sufficiently hard to be capable of supporting the user's weight without substantial deformation.
  • the filling material 13 preferably made of silicon resin, is relatively more expensive, its amount in the entire seat cushion structure is however reduced compared with the foamed material of cushion body 10 .
  • the seat cushion structure of the invention can be therefore produced with a relatively low manufacture cost.
  • the invention therefore provides a seat cushion structure that can economically provide comfortable seating and good heat dissipation characteristics.
  • the seat cushion structure comprises a cushion body that is provided with two recessed cavities formed in accordance with the profile of the human buttocks.
  • the recessed cavities are filled with a filling material, and both cushion body and filling material are outwardly covered with a covering skin, wherein an air gap is left between the filling material and the covering skin.
  • the material of the filling material is preferably made of silicon resin.
  • the use of other types of material may be also envisaged for the filling material such as sponge materials.

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  • Mattresses And Other Support Structures For Chairs And Beds (AREA)

Abstract

A seat cushion structure of the invention comprises a cushion body, made of a foamed material, that has a top surface provided with two left and right recessed cavities. A flexible filling material is filled within the recessed cavities of the cushion body. A covering skin is stretched to outwardly cover the flexible filling material and the cushion body, wherein an air gap is left between the flexible filling material and the covering skin. With the above seat cushion structure, comfortable seating and good heat dissipation are provided.

Description

    FIELD OF THE INVENTION
  • The invention relates to a seat cushion structure and, more particularly, to a seat cushion structure that can provide comfortable seating and good heat dissipation. [0001]
  • BACKGROUND OF THE INVENTION
  • As shown in FIG. 1, a conventional stool is usually provided with [0002] flexible cushion 1 that has an upper surface on which the buttocks of the sat user rest. The cushion 1 is conventionally made of a foamed material 2 that is outwardly covered with a covering skin 3. If the user seats on the cushion 1 for a long time, the heat from the user's body is progressively transferred to the foamed material 2 of the cushion 1. If the covering skin 3 is made of synthetic leather, it is not air permeable. When the user seats on the cushion 1 for a long time, the heat is therefore accumulated at the contact interface, which causes uncomfortable sweating.
  • The above disadvantages are exacerbated when the user while being seated is moving. This occurs when the user is, for example, a drummer who is practicing. The consequent movement of the drummer's buttocks creates frictional contacts and increases the production of heat. Furthermore, the upper planar surface of the [0003] cushion 1 is usually not adapted to the curved profile of the profile of the user's buttocks. As a result, the support of the user's weight is substantially concentrated at a limited contact area of the cushion 1, which causes fatigue during prolonged seating time.
  • SUMMARY OF THE INVENTION
  • Accordingly, it is a principal object of the invention to provide a seat cushion structure that can provide comfortable seating and good heat dissipation. [0004]
  • To attain the above and other objectives, a seat cushion structure of the invention comprises a cushion body, made of a foamed material, that has a top surface provided with two recessed cavities. A flexible filling material is filled within the recessed cavities of the cushion body. A covering skin is stretched to outwardly cover the flexible filling material and the cushion body, wherein an air gap is left between the flexible filling material and the covering skin. [0005]
  • With the above seat cushion structure, comfortable seating is provided. Furthermore, an air gap is maintained between the covering skin and the filling material even when the sat user is moving, which therefore improves the heat dissipation. [0006]
  • To provide a further understanding of the invention, the following detailed description illustrates embodiments and examples of the invention, this detailed description being provided only for illustration of the invention. [0007]
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • The drawings included herein provide a further understanding of the invention. A brief introduction of the drawings is as follows: [0008]
  • FIG. 1 is a perspective view schematically illustrating a seat cushion structure of the prior art; [0009]
  • FIG. 2 is an exploded view schematically illustrating a seat cushion structure according to an embodiment of the invention; [0010]
  • FIG. 3 is a perspective view schematically showing the external aspect of a seat cushion structure according to an embodiment of the invention; [0011]
  • FIG. 4 is a cross-sectional view taken along the section [0012] 4-4 of FIG. 3; and
  • FIG. 5 is a perspective view schematically illustrating the assembly of the seat cushion structure of the invention a stool.[0013]
  • DETAILED DESCRIPTION OF THE EMBODIMENTS
  • Wherever possible in the following description, like reference numerals will refer to like elements and parts unless otherwise illustrated. [0014]
  • Now referring to FIG. 2, the invention provides a seat cushion structure that comprises a [0015] cushion body 10 made of polyurethane (PU) foamed material. At the left and right sides of the top surface of the cushion body 10 are respectively formed recessed cavities 11 that respectively have a profile compliant to the profile of the user's buttocks. A covering skin 12 made of, for example, leather material, is stretched to outwardly cover the cushion body 10, the covering skin 12 being partially in contact with the top surface of the cushion body 10. The recessed cavities 11 are filled with a flexible filling material 13 made of, for example, silicon resin that has a top surface spaced away from the covering skin 12 by an air gap L (see FIG. 4).
  • Referring to FIG. 3 and FIG. 4, when the user seats on the [0016] cushion body 10, due to the user's weight, his/her buttocks are received within the recessed cavities 11 and the filling material 13 flexibly matches with the profile of the buttocks. Comfortable seating is therefore provided via an increased contact surface area. The covering skin 12 is preferably air-permeable and further provided with adequate elastic properties so that it is capable of stretching and contacting with the filling material 13 under pressure of the user's weight even if the user's buttocks are moved on the cushion body 10. The movement of the user's buttocks may be significant in certain situations such as when the user is a drummer who is practicing, in which case the cushion structure of the invention provides more particularly comfortable seating.
  • When no pressure is exerted thereon, the covering [0017] skin 12 is further capable of separating from the surface of the filling material 13 to substantially restore the air gap L there between. The air gap therefore provided, even when the covering skin 12, under pressure of the user's weight, stretches and contacts with the filling material 13, can dissipate the heat from the user's body transmitted through the seat contact to the cushion body 10. Furthermore, the heat is all the more rapidly dissipated as the filling material 13, made of polyurethane, does not easily retain heat, which promotes head dissipation through the air gap and the air-permeable covering skin 12. Therefore, a cool and comfortable feeling is obtained when the user seats on the cushion body 10.
  • It should be noticed that the two [0018] recessed cavities 11 are designed in accordance with the profile of the human buttocks and their specific curvature, which therefore enables an optimal pressure distribution of the user's weight at the contact interface with the cushion body 10. As shown in FIG. 5, the foamed material of the cushion body 10, formed in a single body, is relatively cheap and further is sufficiently hard to be capable of supporting the user's weight without substantial deformation. Although the filling material 13, preferably made of silicon resin, is relatively more expensive, its amount in the entire seat cushion structure is however reduced compared with the foamed material of cushion body 10. The seat cushion structure of the invention can be therefore produced with a relatively low manufacture cost.
  • As described above, the invention therefore provides a seat cushion structure that can economically provide comfortable seating and good heat dissipation characteristics. The seat cushion structure comprises a cushion body that is provided with two recessed cavities formed in accordance with the profile of the human buttocks. The recessed cavities are filled with a filling material, and both cushion body and filling material are outwardly covered with a covering skin, wherein an air gap is left between the filling material and the covering skin. [0019]
  • To achieve comfortable seating, the material of the filling material is preferably made of silicon resin. However, the use of other types of material may be also envisaged for the filling material such as sponge materials. [0020]
  • Those skilled in the art will readily appreciate that the above description is only illustrative of specific embodiments and examples of the invention. The invention should therefore cover various modifications and variations made to the structure of the invention described herein, provided they are included within the scope of the invention as defined in the following appended claims. [0021]

Claims (4)

What is claimed is:
1. A seat cushion structure, comprising:
a cushion body, made of a foamed material, a top of the cushion body being provided with at least a recessed cavity that has a profile compliant to the profile of human buttocks;
a flexible filling material, filled within the recessed cavity of the cushion body; and
a covering skin, outwardly covering the flexible filling material and the cushion body, wherein an air gap is left between the flexible filling material and the covering skin.
2. The seat cushion structure of claim 1, wherein the flexible filling material is made of silicon resin.
3. The seat cushion structure of claim 1, wherein the covering skin is made of a leather that has adequate elastic properties to be capable of stretching when a user seats on the seat cushion structure.
4. The seat cushion structure of claim 1, wherein the top of the cushion body is provided with two recessed cavities.
US10/214,152 2002-08-08 2002-08-08 Seat cushion structure Expired - Lifetime US6687934B1 (en)

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US10/214,152 US6687934B1 (en) 2002-08-08 2002-08-08 Seat cushion structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US10/214,152 US6687934B1 (en) 2002-08-08 2002-08-08 Seat cushion structure

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US6687934B1 US6687934B1 (en) 2004-02-10
US20040055090A1 true US20040055090A1 (en) 2004-03-25

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20190038031A1 (en) * 2017-08-03 2019-02-07 Joan Breibart Device to restore pelvic integrity and to strengthen the pelvic floor and antevert the pelvic region in seated posture and prevent crossed legs

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ITVI20050136A1 (en) * 2005-05-06 2006-11-07 Selle Royal Spa SUPPORTING STRUCTURE FOR CUSTOMIZABLE CUSHIONING, PARTICULARLY FOR PEDAL VEHICLES
US20080018147A1 (en) * 2006-05-30 2008-01-24 David Ybarrola Contoured bicycle saddle and method of manufacturing
US20070284030A1 (en) * 2006-06-08 2007-12-13 Ching-Song Lee Seat pad and method for making the same
TWM317378U (en) * 2006-10-23 2007-08-21 Cionlli Ind Co Ltd Bicycle seat capable of reducing ischium pressure
DE102008035611A1 (en) * 2008-07-31 2010-02-04 Johnson Controls Gmbh Upholstery element, in particular a seat cushion element of different hardness zones for use in a motor vehicle, method for producing a cushion element and vehicle seat
US9609951B2 (en) * 2015-09-03 2017-04-04 King Chan Foam seat cushions
US10448744B2 (en) * 2015-12-09 2019-10-22 Lifetime Products, Inc. Chair
US10709247B1 (en) * 2019-03-25 2020-07-14 Merits Health Products Co., Ltd. Cushion set
US11382428B2 (en) * 2020-10-02 2022-07-12 Ergogenesis Workplace Solutions Llc Office chair seat and method of making same
JP2023546285A (en) * 2020-10-19 2023-11-01 テトロ リミテッド Hybrid structure with suspension properties

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US2384713A (en) * 1941-07-26 1945-09-11 Varma Dewan Chand Cushion seat
FR1425705A (en) * 1964-02-22 1966-01-24 Kamei Autokomfort Cushion insert, with marginal bead, for motor vehicles
US3243231A (en) * 1964-09-01 1966-03-29 Ethel Benedict Saddle for bicycles
US4753480A (en) * 1986-08-14 1988-06-28 Morell Theodore R Pad assembly for wheelchairs
US4788730A (en) * 1987-12-02 1988-12-06 Bexton Robert A Gel-filled, variably-adjustable cushioning system for supporting a person
US5189747A (en) * 1991-10-04 1993-03-02 Canadian Posture And Seating Centre (1988) Inc. Seat cushion
US5348369A (en) * 1993-03-01 1994-09-20 Yu Tsai Yun Saddle for a bicycle
US5687436A (en) * 1996-08-09 1997-11-18 Jay Medical Ltd. Wheelchair seating cushion having adjustable top contour shape
US5836025A (en) * 1997-02-10 1998-11-17 Poncy, Sr.; George W. Gel containing positioning cushion for infirm patients
US5933891A (en) * 1998-04-24 1999-08-10 Invacare Corporation Wheelchair seating system including trapezoidally sectioned fluid bag
US6125486A (en) * 1998-11-04 2000-10-03 Larry D. Rabon Seat for treating prostatitis
JP3655210B2 (en) * 2001-05-02 2005-06-02 星野楽器株式会社 Drum chair

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20190038031A1 (en) * 2017-08-03 2019-02-07 Joan Breibart Device to restore pelvic integrity and to strengthen the pelvic floor and antevert the pelvic region in seated posture and prevent crossed legs
US10542821B2 (en) * 2017-08-03 2020-01-28 Joan Breibart Device to restore pelvic integrity and to strengthen the pelvic floor and antevert the pelvic region in seated posture and prevent crossed legs

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