US20040012238A1 - Seat pad for vehicle - Google Patents

Seat pad for vehicle Download PDF

Info

Publication number
US20040012238A1
US20040012238A1 US10/415,317 US41531703A US2004012238A1 US 20040012238 A1 US20040012238 A1 US 20040012238A1 US 41531703 A US41531703 A US 41531703A US 2004012238 A1 US2004012238 A1 US 2004012238A1
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US
United States
Prior art keywords
vehicles
bottom part
seat pad
seat
top part
Prior art date
Legal status (The legal status 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 status listed.)
Abandoned
Application number
US10/415,317
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English (en)
Inventor
Masaaki Zenba
Kazushige Ebe
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bridgestone Corp
Original Assignee
Bridgestone Corp
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 Bridgestone Corp filed Critical Bridgestone Corp
Assigned to BRIDGESTONE CORPORATION reassignment BRIDGESTONE CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: EBE, KAZUSHIGE, ZENBA, MASAAKI
Publication of US20040012238A1 publication Critical patent/US20040012238A1/en
Abandoned legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/70—Upholstery springs ; Upholstery

Definitions

  • the present invention relates to a seat pad for vehicles and, more particularly, to a seat pad for vehicles comprising a top part and a bottom part which are formed separately from each other and are united with each other.
  • a seat pad for vehicles is usually made of a flexible polyurethane foam or a semi-rigid polyurethane foam.
  • a seat pad for vehicles having a double-layer structure composed of an outer layer part and a lower layer part has been proposed in which the outer layer part to be directly touched by an occupant is made of a flexible material and the lower layer part is made of a material having relatively high degree of hardness.
  • Such a seat pad for vehicles is usually manufactured by pouring two kinds of liquid urethane compounds having different degrees of hardness into a mold at the same time or with a time difference.
  • the configurations and materials of the seating section, an under-thigh section, and side bulging sections of the seat pad, and the backrest of the vehicle seat are completely different in accordance with the type or grade of vehicles.
  • the frame on which the seat pad is mounted mass production by virtue of commonization has been implemented for the purpose of cost reduction. Accordingly, the same frame can be adopted to different types and grades of vehicles.
  • the outer layer side is changed in accordance with the type or grade of vehicle, the configuration of the bottom side to be in contact with the frame is nowadays the same even for different types and grades of vehicles.
  • a seat sensor is sometimes installed to a vehicle seat.
  • a film-like sensor is attached to a seat surface of a seat cushion pad of a front-passenger seat.
  • Occupant may feel the sensor as a foreign object when seated.
  • the seat pad for vehicles allows the commonization of the seat sensor among various seat pads for vehicles of different types.
  • the seat pad for vehicle according to the first aspect of the present invention is a seat pad comprising a top part and a bottom part which are formed separately from each other and then connected to each other, wherein the bottom part is formed into the same configuration allowing commonization among different types of vehicles.
  • the top part and the bottom part are formed separately from each other and then connected to each other in this seat pad for vehicles, there is no limitation on the combination between the material of the top part and the material of the bottom part. Since the material of the top part and the material of the bottom part can be selected separately from a board range of materials, the seat pad can be tailored to the wide-ranging needs on performance by employing various combinations with regard to the hardness and other properties. Since the bottom part is formed into the same configuration allowing commonization not only among different grades of vehicles of the same type but also among different types of vehicles, the cost can be reduced because of the commonization of the bottom part.
  • the seat pad according to the second aspect of the present invention is a seat pad for vehicles comprising a top part and a bottom part which are formed separately from each other and then connected to each other, and comprising a sheet-like seat sensor which is disposed between the matching faces of the bottom part and the top part.
  • the seat sensor is located inside the seat pad for vehicles which has no effect on design so that a mark (e.g. holes or mark-off line) indicating the position of the seat sensor can be formed.
  • a mark e.g. holes or mark-off line
  • the number of man-hour for post-bonding operation can be reduced.
  • the seat sensor Since the seat sensor is disposed deep inside the seat pad, an occupant can be prevented from feeling discomfort due to a seat sensor. In addition, the seat sensor is hardly subjected to concentrated load, thereby reducing the malfunction of the seat sensor.
  • the seat sensor Since the seat sensor is not affected by design of outer surface, the seat sensor can be commonized among various types of vehicles.
  • FIG. 1 a is a perspective view showing an embodiment of a seat pad for vehicles according to the first aspect
  • FIG. 1 b is a sectional view taken along a line Ib-Ib of FIG. 1 a
  • FIG. 1 c is a sectional view taken along a line Ic-Ic of FIG. 1 a;
  • FIG. 2 a is a sectional view showing a bottom part of another embodiment of the seat pad for vehicles of the present invention in a state before engagement and FIG. 2 b is a sectional view showing the bottom part in a state after the engagement;
  • FIG. 3 is a sectional view showing further another embodiment of the seat pad for vehicles of the present invention.
  • FIG. 4 a is a perspective view showing an embodiment of a seat pad for vehicles according to the second aspect
  • FIG. 4 b is a sectional view taken along a line IVb-IVb of FIG. 4 a
  • FIG. 4 c is a sectional view taken along a line IVc-IVc of FIG. 4 a;
  • FIG. 5 is a perspective view showing a bottom part of the seat pad for vehicles of the present invention.
  • FIG. 6 is a perspective view showing a bottom part of a seat pad for vehicles according to still another embodiment of the present invention.
  • FIGS. 1 a - 1 c First, an embodiment of a seat pad for vehicles according to the first aspect will be described with reference to FIGS. 1 a - 1 c.
  • a seat pad 1 for vehicles comprises a top part 2 corresponding to a seating section (under-hip section), an under-thigh section, and side bulging sections, and a bottom part 3 located on the underside of the top part 2 .
  • the top part 2 and the bottom part 3 are formed separately from each other and are connected to each other by adhesive bonding.
  • the top part 2 is a part of which design is changed variously in accordance with the type or grade of a vehicle and to be directly touched by an occupant.
  • a pad of which concept is emphasis on cushioning property or a case of using soft urethane or the like having a thickness of 5 mm or more as a covering member for a seat pad it is preferable to use low-density material which is cheaper for the top part and to use high-performance material for the bottom part which constitutes larger volume in the height direction.
  • the material for the top part 2 it is preferable to use a polyurethane foam of which core density is 25-45 kg/m 3 , hardness at 25% is 15-20 kgf/ ⁇ 200.
  • the material for the bottom part 3 it is preferable to use a polyurethane foam of which core density is 45-70 kg/m 3 , hardness at 25% is 16-30 kgf/ ⁇ 200.
  • the top part 2 can be manufactured by pouring a liquid urethane compound into each designed mold and thus foaming and molding.
  • the bottom part 3 is located on the underside of a portion corresponding to the normal sitting position (under-hip section) of the seat pad 1 and has such a configuration as to fit the seat frame which can be commonized among various types and various grades of vehicles.
  • the bottom part 3 has the same configuration allowing the commonization of the bottom part 3 among different types of vehicles.
  • the bottom part 3 may be formed by using a same mold or by cutting from a polyurethane foam block.
  • the bottom part 3 can be commonized among different types of vehicles, the bottom part 3 has such a size as to fit the commonized frame and also to be united with any of different top parts and also preferably has a size enough for ensuring the comfort to sit (seating comfort) and the stability of supporting.
  • the size of the bottom part 3 is preferably large. Since the bottom part 3 is made of high-performance material, the large size leads to increase in cost.
  • the length of longitudinal direction L is preferably from 300 to 700 mm, especially from 400 to 550 mm
  • the length of width direction W is preferably from 200 to 500 mm, especially from 300 to 400 mm
  • the thickness T 1 is preferably from 50 to 90%, especially from 60 to 80%, of the total thickness T 0 of the pad.
  • the total thickness T 0 of the pad is the total thickness at the main sitting position of the portion corresponding to the normal sitting position and the thickness T 1 of the bottom part 3 is the thickness at the same position.
  • urethane adhesive may be used as adhesive for bonding the top part 2 and the bottom part 3 .
  • the top part 2 and the bottom part 3 are united by adhesive bonding according to a conventional method.
  • the method for connecting the top part 2 and the bottom part 3 is not limited to the adhesive bonding.
  • the top part and the bottom part may be connected using flat fastener such as velcro tape (trade name) or by fitting the bottom part into the top part with specially designed connecting portions.
  • FIGS. 2 a , 2 b are sectional views showing a seat pad 1 A for vehicles in which a top part and a bottom part are united by the fitting as mentioned above.
  • the top part 2 is provided at its lower surface with a concave portion 2 A to which the bottom part 3 can be fitted (FIG. 2 a ) so that the top part 2 and the bottom part 3 are united by fitting the bottom part 3 to the concave portion 2 A (FIG. 2 b ).
  • the top part 2 may be made of two or more kinds of different materials.
  • a seat pad 1 B for vehicles shown in FIG. 3 has a top part 2 which is provided at its lower surface with a concave portion 2 A to which a bottom part 3 is fitted and of which a seating section 2 b is made of a material different from the material of side bulging sections 2 a , 2 a .
  • the top part 2 can be manufactured by pouring different kinds of liquid urethane compounds into a same mold and foaming and molding them.
  • the part corresponding to the seating section, the under-thigh section, and the side bulging sections is the top part 2 and the bottom part 3 is located on the underside of the top part 2 in the seat pads for vehicles shown in FIGS. 1 a - 3
  • the constitutions of the top part 2 and the bottom part 3 are not limited thereto.
  • the bottom part 3 may extend to be located on the undersides of the side bulging sections.
  • the seat pad for vehicles according to the present invention can provide a different seat for each type or grade of a vehicle, while its bottom part can be commonized for seat pads among various kinds of vehicles such as a passenger car, a bus, and a truck, thereby providing a beneficial effect on reducing the cost of seat pads for vehicles.
  • FIGS. 4 a - 4 c and FIG. 5 a seat pad for vehicles according to the second aspect will be described with reference to FIGS. 4 a - 4 c and FIG. 5.
  • a seat pad 1 C for vehicles comprises a top part 2 corresponding to a seating section (under-hip section), an under-thigh section, and side bulging sections, and a bottom part 3 located on the underside of the top part 2 .
  • the top part 2 and the bottom part 3 are formed separately from each other, a seat sensor 4 is disposed on the upper face of the bottom part 3 , and the bottom part 3 and the top part 2 are connected to each other by adhesive bonding.
  • the upper face of the bottom part 3 and the matching face of the top part 2 are generally flat horizontal planes.
  • only portions corresponding to the position of the seat sensor 4 are designed to be flat and other matching faces may be provided with concave or convex portions for alignment of the bottom part 3 and the top part 2 .
  • At least portions corresponding to the location of the seat sensor 4 of the matching faces of the top part 2 and the bottom part 3 are designed to be flat (preferably, horizontal planes), whereby the sheet-like seat sensor 4 can be extremely easily disposed on the bottom part 3 .
  • the upper face of the bottom part 3 is preferably provided with a mark indicating the position of the seat sensor 4 .
  • the mark is preferably a line (e.g. mark-off line) along the outer periphery of the seat sensor 4 .
  • the mark may be holes formed on positions corresponding to the outer periphery of the seat sensor 4 .
  • the thickness of the top part 2 at a position corresponding to the location of the seat sensor 4 is preferably in a range from 10 to 50% of the total thickness of the top part 2 and the bottom part 3 . This thickness prevents an occupant from feeling discomfort when seated in the seat pad 1 C. This thickness also prevents the seat sensor 4 from being subjected to concentrated load, thereby preventing the malfunction, the deterioration, and the damage of the seat sensor 4 .
  • the seat sensor 4 may be provided with a chip-like flexible member 6 and the bottom part 3 A may be provided at its upper surface with a concave portion 5 so that the chip-like flexible member 6 is fitted into the concave portion 5 , thereby positioning the seat sensor 4 .
  • the concave portion 5 and the chip-like flexible member 6 By designing the concave portion 5 and the chip-like flexible member 6 to be substantially rectangular parallelopipeds which are perfectly fitted to each other, the directions of the chip-like flexible member 6 and the concave portion 5 for fitting operation can be uniquely defined, thereby uniquely determining the position and direction of the seat sensor 4 . That is, is the chip-like flexible member 6 and the concave portion 5 are cubic, there is a possibility that the direction of the chip-like flexible member 6 is shifted by 90° when the chip-like flexible member 6 is fitted into the concave portion 5 . If the chip-like flexible member 6 and the concave portion 5 are column shapes, the direction of the chip-like flexible member 6 can not be decided.
  • Substantially rectangular parallelepiped for the chip-like flexible member 6 includes a rectangular parallelopiped-like shape of which corners are rounded (for example, elliptic cylindrical shape) besides the rectangular parallelopiped.
  • the chip-like flexible member 6 is preferably formed of the same material as the foam forming the bottom part 3 A such as an urethane foam.
  • the chip-like flexible member 6 is preferably located at a position outwardly extending from the body of the seat sensor 4 . According to this structure, a laborer can dispose the seat sensor 4 on the bottom part 3 A while observing the condition for fitting the chip-like flexible member 6 into the concave portion 5 with his or her eyes, thereby improving the workability for disposing the seat sensor 4 .
  • the concave portion 5 and the chip-like flexible member 6 are preferably located around the center of a front portion of the seat pad for vehicles.
  • All of the top part 2 and the bottom part 3 , 3 A are preferably made of polyurethane foam.
  • the top part 2 and the bottom part 3 , 3 A are preferably bonded with urethane adhesive. However, they may be connected using flat fastener or the like.
  • the part corresponding to the seating section, the under-thigh section, and the side bulging sections is the top part 2 and the bottom part 3 , 3 A is located on the underside of the top part 2 in the seat pads for vehicles shown in FIGS. 4 a - 6
  • the constitutions of the top part 2 and the bottom part 3 , 3 A are not limited thereto.
  • the bottom part 3 , 3 A may extend to be located on the undersides of the side bulging sections.
  • the seat pad for vehicles according to the first aspect can be tailored to the wide-ranging needs on performance by employing various combinations with regard to the hardness and other properties because the material of the top part and the material of the bottom part can be selected separately and arbitrarily from a board range of materials without limitation on combination between the material of the top part and the bottom part.
  • the bottom part can be commonized, thereby reducing the cost.
  • a seat pad of which the top part is made of low-density material which is cheaper and the bottom part is made of high-performance material can provide desired seating comfort, stability of supporting, and stability and, in addition, the total cost of materials of the pad is advantageously low.
  • the seat pad according to the second aspect prevents an occupant from feeling discomfort due to a seat sensor.
  • the seat pad for vehicles can prevent the seat sensor from being subjected to concentrated load, thereby preventing the malfunction of the seat sensor and improving durability of the seat sensor.
  • the seat pad for vehicles allows the commonization of the seat sensor among various seat pads for vehicles of different types.

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  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)
  • Mattresses And Other Support Structures For Chairs And Beds (AREA)
US10/415,317 2000-11-21 2001-11-13 Seat pad for vehicle Abandoned US20040012238A1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
JP2000-354529 2000-11-21
JP2000354529 2000-11-21
JP2000-390902 2000-12-22
JP2000390902 2000-12-22
PCT/JP2001/009898 WO2002041736A1 (fr) 2000-11-21 2001-11-13 Coussin de siege pour vehicule

Publications (1)

Publication Number Publication Date
US20040012238A1 true US20040012238A1 (en) 2004-01-22

Family

ID=26604377

Family Applications (1)

Application Number Title Priority Date Filing Date
US10/415,317 Abandoned US20040012238A1 (en) 2000-11-21 2001-11-13 Seat pad for vehicle

Country Status (5)

Country Link
US (1) US20040012238A1 (de)
EP (1) EP1336361A4 (de)
JP (1) JPWO2002041736A1 (de)
AU (1) AU2002212759A1 (de)
WO (1) WO2002041736A1 (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009088186A2 (ko) * 2008-01-07 2009-07-16 코어 무빙 건강의자
US20100289311A1 (en) * 2008-01-07 2010-11-18 Shim Jae Hun Core moving fitness chair
US20150015050A1 (en) * 2013-02-25 2015-01-15 Carol N. Van Zandt Seat Cushion
DE202015004233U1 (de) * 2015-06-15 2016-09-16 GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) Sitz für ein Kraftfahrzeug
CN107031476A (zh) * 2015-10-27 2017-08-11 丰田纺织株式会社 缓冲垫
US10189570B2 (en) * 2014-09-24 2019-01-29 B/E Aerospace, Inc. Seat pan assembly with encased comfort spring
US11007901B2 (en) 2017-06-23 2021-05-18 Crouzet Automatismes Seat

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JP2005112335A (ja) * 2003-06-03 2005-04-28 Bridgestone Corp 着座センサ付き座席及び座席用パッド
JP2007006911A (ja) * 2003-10-07 2007-01-18 Bridgestone Corp 車両用シートパッド
DE10354065B4 (de) 2003-11-19 2006-05-04 Johnson Controls Gmbh Fahrzeugsitz, insbesondere für ein Kraftfahrzeug
DE102005011742A1 (de) * 2005-03-11 2006-09-14 Johnson Controls Gmbh Schaumteil für ein Fahrzeug, insbesondere für einen Sitz und insbesondere mit Sensormittel
JP4926599B2 (ja) * 2006-08-09 2012-05-09 株式会社イノアックコーポレーション シートクッション
DE102007056374A1 (de) * 2007-11-22 2009-05-28 Volkswagen Ag Fahrzeugsitz
CN102894704B (zh) * 2012-10-30 2015-10-28 安吉富和家具有限公司 自主呼吸坐面
JP6154296B2 (ja) * 2013-11-19 2017-06-28 東洋ゴム工業株式会社 シートパッド及びその製造方法
JP6263509B2 (ja) * 2015-10-02 2018-01-17 テイ・エス テック株式会社 車両用シート
JP6729110B2 (ja) * 2016-07-13 2020-07-22 トヨタ紡織株式会社 乗物用シートのクッションパッド及びその製造方法

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US3939508A (en) * 1975-01-08 1976-02-24 Thomasville Products, Inc. Mattress and cushioning construction
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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009088186A2 (ko) * 2008-01-07 2009-07-16 코어 무빙 건강의자
WO2009088186A3 (ko) * 2008-01-07 2009-09-24 Shim Jae Hun 코어 무빙 건강의자
US20100289311A1 (en) * 2008-01-07 2010-11-18 Shim Jae Hun Core moving fitness chair
US20150015050A1 (en) * 2013-02-25 2015-01-15 Carol N. Van Zandt Seat Cushion
US10189570B2 (en) * 2014-09-24 2019-01-29 B/E Aerospace, Inc. Seat pan assembly with encased comfort spring
DE202015004233U1 (de) * 2015-06-15 2016-09-16 GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) Sitz für ein Kraftfahrzeug
CN107031476A (zh) * 2015-10-27 2017-08-11 丰田纺织株式会社 缓冲垫
US10166892B2 (en) * 2015-10-27 2019-01-01 Toyota Boshoku Kabushiki Kaisha Pad
US11007901B2 (en) 2017-06-23 2021-05-18 Crouzet Automatismes Seat

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AU2002212759A1 (en) 2002-06-03
EP1336361A1 (de) 2003-08-20
WO2002041736A1 (fr) 2002-05-30
JPWO2002041736A1 (ja) 2004-03-25

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