JP6788267B2 - Vehicle seat - Google Patents

Vehicle seat Download PDF

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Publication number
JP6788267B2
JP6788267B2 JP2016222477A JP2016222477A JP6788267B2 JP 6788267 B2 JP6788267 B2 JP 6788267B2 JP 2016222477 A JP2016222477 A JP 2016222477A JP 2016222477 A JP2016222477 A JP 2016222477A JP 6788267 B2 JP6788267 B2 JP 6788267B2
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seat
surface portion
user
back surface
vehicle seat
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JP2018079765A (en
Inventor
康行 西川
康行 西川
諒 斉藤
諒 斉藤
瞬 洲鎌
瞬 洲鎌
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Nishikawa Co Ltd
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Nishikawa Co Ltd
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Priority to JP2016222477A priority Critical patent/JP6788267B2/en
Priority to PCT/JP2017/041093 priority patent/WO2018092807A1/en
Priority to TW106139494A priority patent/TW201825353A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/90—Details or parts not otherwise provided for
    • 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
    • B60N2/24—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles
    • B60N2/32—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles convertible for other use
    • B60N2/34—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles convertible for other use into a bed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/64—Back-rests or cushions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
    • B64D11/00—Passenger or crew accommodation; Flight-deck installations not otherwise provided for
    • B64D11/06—Arrangements of seats, or adaptations or details specially adapted for aircraft seats

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  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Mattresses And Other Support Structures For Chairs And Beds (AREA)
  • Seats For Vehicles (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)

Description

本発明は、乗り物の内部において使用される乗り物用シートに関する。 The present invention relates to a vehicle seat used inside a vehicle.

従来から、乗り物用シートとしては種々のものが知られている。特開２００９−１５３５６４号公報には、航空機の座席用のシートクッションが記載されている。このシートクッションは、下部クッション層と、下部クッション層の上面に接着された上部クッション層とを備えている。下部クッション層は、メラミンを含むポリウレタンフォームによって構成されている。下部クッション層の厚さは５０ｍｍ〜７０ｍｍ程度とされている。上部クッション層は、メラミンを含むポリウレタンフォームの上下面が加熱されて圧縮塑性変形されたものであり、ウレタン系等の接着剤により下部クッション層の上面に接着されている。加熱及び圧縮塑性変形された後の上部クッション層の厚さは５〜１５ｍｍである。 Conventionally, various types of vehicle seats have been known. Japanese Unexamined Patent Publication No. 2009-153564 describes a seat cushion for an aircraft seat. This seat cushion includes a lower cushion layer and an upper cushion layer adhered to the upper surface of the lower cushion layer. The lower cushion layer is made of polyurethane foam containing melamine. The thickness of the lower cushion layer is about 50 mm to 70 mm. The upper and lower surfaces of the polyurethane foam containing melamine are heated and compressionally deformed, and the upper cushion layer is adhered to the upper surface of the lower cushion layer with an adhesive such as urethane. The thickness of the upper cushion layer after heating and compression plastic deformation is 5 to 15 mm.

特開２００９−１５３５６４号公報JP-A-2009-153564

また、乗り物用シートとしては、使用者の背面が当接する背面部と、使用者の臀部が乗せられる座面部とを備えたものが知られている。しかしながら、自動車、電車、船舶、又は航空機等の乗り物では、使用者が長時間に亘って乗り物用シートを使用することが多く、乗り物用シートで使用者が睡眠をとる場合もある。使用者が乗り物用シートで睡眠をとる場合、寝返りを打ったときに使用者の肩が圧迫されているという現状がある。よって、寝返りを打ったときに使用者の肩が圧迫されるので、乗り物内において寝心地が良い状態を継続させることができないという問題がある。 Further, as a vehicle seat, a seat having a back surface portion on which the back surface of the user is in contact and a seat surface portion on which the buttocks of the user are placed is known. However, in vehicles such as automobiles, trains, ships, and aircraft, the user often uses the vehicle seat for a long period of time, and the user may sleep on the vehicle seat. When the user sleeps on the vehicle seat, the current situation is that the shoulder of the user is pressed when he / she rolls over. Therefore, when the user rolls over, the shoulder of the user is pressed, and there is a problem that it is not possible to maintain a comfortable state in the vehicle.

本発明は、乗り物内において寝心地が良い状態を継続させることができる乗り物用シートを提供することを目的とする。 An object of the present invention is to provide a vehicle seat capable of maintaining a comfortable state in a vehicle.

本発明に係る乗り物用シートは、乗り物の内部において使用される乗り物用シートであって、使用者の肩及び背中が乗せられる背面部と、使用者の臀部が乗せられる座面部と、を含んでおり、背面部及び座面部は、共にウレタン製であり、背面部の厚さは、座面部の厚さよりも厚く、背面部は、背中側に位置する第１部材と、第１部材から見て背中の反対側に位置しており第１部材よりも硬い第２部材と、を含んでおり、第１部材と第２部材とは、互いに貼り合わされており、第１部材の第２部材との貼り合わせ面、及び第２部材の第１部材との貼り合わせ面が第１波形形状とされており、座面部は、臀部側に位置する第３部材と、第３部材から見て臀部の反対側に位置しており第３部材よりも硬い第４部材と、を含んでおり、第３部材と第４部材とは、互いに貼り合わされており、第３部材の第４部材との貼り合わせ面、及び第４部材の第３部材との貼り合わせ面が第２波形形状とされており、第２波形形状の周期は、第１波形形状の周期よりも短い。 The vehicle seat according to the present invention is a vehicle seat used inside a vehicle, and includes a back portion on which the user's shoulders and back are placed, and a seat surface portion on which the user's buttocks are placed. cage, back portion and seat portion are both made of urethane, the thickness of the rear portion, rather thick than the thickness of the seat portion, the back portion, a first member located on the back side, seen from the first member The second member, which is located on the opposite side of the back and is harder than the first member, is included, and the first member and the second member are bonded to each other and are attached to the second member of the first member. The bonding surface of the second member and the bonding surface of the second member with the first member have a first corrugated shape, and the seating surface portion is the third member located on the buttock side and the buttock portion when viewed from the third member. It includes a fourth member that is located on the opposite side and is harder than the third member, and the third member and the fourth member are bonded to each other, and the third member is bonded to the fourth member. The surface and the surface where the fourth member is bonded to the third member have a second corrugated shape, and the period of the second corrugated shape is shorter than the period of the first corrugated shape .

この乗り物用シートでは、使用者の肩及び背中が乗せられる背面部と、使用者の臀部が乗せられる座面部が共にウレタン製である。よって、背面部及び座面部は、共に、軽量であって且つ高いクッション性を有するため、使用者の肩、背中及び臀部に対するフィット感を良好にすることができる。従って、乗り物内において快適な睡眠を使用者に提供することができる。また、使用者の肩及び背中が乗せられる背面部の厚さは、座面部の厚さよりも厚い。よって、使用者が寝返りを打ったときに、使用者の肩を背面部に入り込ませることができるので、背面部に対する肩の沈み込みを良好にすることができる。従って、寝返り性を高めることができるので、乗り物内において快適な眠りを使用者に提供し続けることができる。 In this vehicle seat, both the back portion on which the user's shoulders and back are placed and the seat surface portion on which the user's buttocks are placed are made of urethane. Therefore, since both the back surface portion and the seat surface portion are lightweight and have a high cushioning property, it is possible to improve the fit to the shoulder, back and buttocks of the user. Therefore, it is possible to provide the user with a comfortable sleep in the vehicle. In addition, the thickness of the back surface on which the user's shoulders and back are placed is thicker than the thickness of the seat surface. Therefore, when the user rolls over, the user's shoulder can be inserted into the back portion, so that the sinking of the shoulder with respect to the back portion can be improved. Therefore, since it is possible to improve the ability to turn over, it is possible to continue to provide the user with a comfortable sleep in the vehicle.

また、背面部の背中側の面には、凹凸が形成されていてもよい。この場合、使用者の肩及び背中が背面部の凹凸に接するので、肩及び背中が乗せられることによる体圧分散性を高めることができる。すなわち、背面部の凹凸によって体圧を分散しやすくすることができるので、使用者の肩及び背中に対する圧迫感を軽減させることができる。従って、乗り物内の使用者に快適な寝心地を提供することができる。 In addition, unevenness may be formed on the back surface of the back surface portion. In this case, since the shoulder and back of the user come into contact with the unevenness of the back surface, it is possible to enhance the dispersibility of body pressure by placing the shoulder and back. That is, since the body pressure can be easily dispersed by the unevenness of the back surface portion, the feeling of pressure on the shoulder and back of the user can be reduced. Therefore, it is possible to provide a comfortable sleeping comfort to the user in the vehicle.

また、背面部は、第１部材と、第１部材よりも硬い第２部材との貼り合わせによって構成されている。従って、柔らかい第１部材を表面側に向けて使用することにより、使用者の肩及び背中に柔らかい部分を当てることができる。よって、使用者に一層快適な寝心地を提供することができる。また、第１部材の第２部材との貼り合わせ面、及び第２部材の第１部材との貼り合わせ面は、波形形状とされている。このように貼り合わせ面を波形形状とすることにより、これらの貼り合わせ面において体圧を分散しやすくすることができる。すなわち、使用者の体圧を貼り合わせ面で分散しやすくすることができる。従って、体圧分散性を良好にすることにより、使用者の肩及び背中に対する圧迫感を一層軽減させることができるので、乗り物内の使用者に快適な寝心地を提供し続けることができる。 Further, the back surface portion is composed of a first member, the bonding of the rigid second member than the first member. Therefore, by using the soft first member toward the surface side, the soft portion can be applied to the shoulder and back of the user. Therefore, it is possible to provide the user with a more comfortable sleep. Further, the bonding surface of the first member with the second member and the bonding surface of the second member with the first member have a corrugated shape. By making the bonded surfaces corrugated in this way, it is possible to easily disperse the body pressure on these bonded surfaces. That is, the body pressure of the user can be easily dispersed on the bonded surface. Therefore, by improving the dispersibility of body pressure, the feeling of pressure on the shoulder and back of the user can be further reduced, so that the user in the vehicle can continue to be provided with a comfortable sleeping comfort.

また、第１波形形状を形成する山部及び谷部は、背面部及び座面部が並ぶ方向に沿って並設されていてもよく、第２波形形状を形成する山部及び谷部は、背面部及び座面部が並ぶ方向に沿って並設されていてもよい。この場合、波形形状の山部と谷部とは、使用者の身体が延びる方向に沿って並ぶことになる。従って、山部と谷部とが別の方向に並ぶ場合と比較して、体圧を一層分散させやすくすることができる。よって、体圧分散性を更に良好にすることにより、使用者に提供する寝心地を更に快適にすることができる。 Further, the peaks and valleys forming the first corrugated shape may be arranged side by side along the direction in which the back surface and the seat surface are arranged, and the peaks and valleys forming the second waveform shape are the back surfaces. The portions and the seating surface portions may be arranged side by side along the line-up direction . In this case, the corrugated peaks and valleys are aligned along the direction in which the user's body extends. Therefore, it is possible to make it easier to disperse the body pressure as compared with the case where the mountain portion and the valley portion are lined up in different directions. Therefore, by further improving the body pressure dispersibility, the sleeping comfort provided to the user can be further improved.

本発明によれば、乗り物内において寝心地が良い状態を継続させることができる。 According to the present invention, it is possible to maintain a comfortable state in the vehicle.

第１実施形態に係る乗り物用シートを示す斜視図である。It is a perspective view which shows the vehicle seat which concerns on 1st Embodiment. 図１の乗り物用シートを模式的に示す平面図である。It is a top view which shows typically the vehicle seat of FIG. 図２のIII−III線断面図である。FIG. 2 is a sectional view taken along line III-III of FIG. （ａ）は、背面部を示す側面図である。（ｂ）は、座面部を示す側面図である。(A) is a side view showing a back surface portion. (B) is a side view showing a seating surface portion. 背面部を示す平面図である。It is a top view which shows the back part. 第２実施形態に係る乗り物用シートの背面部を示す斜視図である。It is a perspective view which shows the back part of the vehicle seat which concerns on 2nd Embodiment. 図６の背面部を示す側面図である。It is a side view which shows the back part of FIG. 第２実施形態に係る乗り物用シートの座面部を示す斜視図である。It is a perspective view which shows the seat surface part of the vehicle seat which concerns on 2nd Embodiment. 図８の座面部を示す側面図である。It is a side view which shows the seat surface part of FIG. （ａ）は、第１変形例に係る背面部を示す側面図である。（ｂ）は、第２変形例に係る背面部を示す側面図である。(A) is a side view which shows the back surface part which concerns on 1st modification. (B) is a side view which shows the back surface part which concerns on the 2nd modification.

以下、図面を参照しながら実施形態に係る乗り物用シートについて説明する。図面の説明において、同一又は相当する要素には同一の符号を付し、重複する説明を省略する。 Hereinafter, the vehicle seat according to the embodiment will be described with reference to the drawings. In the description of the drawings, the same or corresponding elements are designated by the same reference numerals, and duplicate description will be omitted.

（第１実施形態）
本実施形態に係る乗り物用シート１は、車両、電車、船舶、及び航空機等といった、乗り物の内部で使用されるシートである。以下では、乗り物用シート１が航空機の内部において使用される例を説明する。乗り物用シート１は、例えば、難燃性の防炎シート、及び難燃性のカバーに収容されるフルフラットシートである。また、乗り物用シート１が設けられる航空機の座席クラスは、例えば、ビジネスクラス又はファーストクラスである。図１及び図２に示されるように、乗り物用シート１は、使用者Ｍの肩Ｍ１及び背中Ｍ２が乗せられる背もたれ部２と、使用者Ｍの臀部Ｍ３が乗せられる座部３と、使用者の足Ｍ４が乗せられる足置き部４とを備えている。 (First Embodiment)
The vehicle seat 1 according to the present embodiment is a seat used inside a vehicle such as a vehicle, a train, a ship, an aircraft, or the like. In the following, an example in which the vehicle seat 1 is used inside an aircraft will be described. The vehicle seat 1 is, for example, a flame-retardant flame-retardant sheet and a full-flat seat housed in a flame-retardant cover. Further, the seat class of the aircraft provided with the vehicle seat 1 is, for example, business class or first class. As shown in FIGS. 1 and 2, the vehicle seat 1 includes a backrest portion 2 on which the shoulder M1 and back M2 of the user M are placed, a seat portion 3 on which the buttocks M3 of the user M is placed, and a user. It is provided with a footrest portion 4 on which the foot M4 of the vehicle can be placed.

乗り物用シート１は、平面視において長さ方向Ａ１に延びる台形状とされている。乗り物用シート１は、幅方向Ａ２に一定の幅を有すると共に、高さ方向Ａ３に一定の高さを有する。背もたれ部２、座部３及び足置き部４は、長さ方向Ａ１に沿って並んでおり、互いに連結されている。 The vehicle seat 1 has a trapezoidal shape extending in the length direction A1 in a plan view. The vehicle seat 1 has a constant width in the width direction A2 and a constant height in the height direction A3. The backrest portion 2, the seat portion 3, and the footrest portion 4 are arranged along the length direction A1 and are connected to each other.

背もたれ部２、座部３及び足置き部４の平面視の形状は、共に台形状となっている。また、２体の乗り物用シート１が長さ方向Ａ１に対して傾斜する壁Ｗを介して隣接しており、２体の乗り物用シート１は長さ方向Ａ１への向きが互いに逆となるように配置されている。２体の乗り物用シート１は平面視において長方形状を成している。 The shapes of the backrest portion 2, the seat portion 3, and the footrest portion 4 in a plan view are all trapezoidal. Further, the two vehicle seats 1 are adjacent to each other via a wall W that is inclined with respect to the length direction A1, so that the two vehicle seats 1 are oriented in opposite directions to the length direction A1. Is located in. The two vehicle seats 1 have a rectangular shape in a plan view.

背もたれ部２と座部３との境目部分５は幅方向Ａ２に延びており、この境目部分５は、台形状の背もたれ部２の上底、且つ台形状の座部３の下底に相当する。座部３と足置き部４との境目部分６は幅方向Ａ２に延びており、境目部分６は、台形状の座部３の上底、且つ台形状の足置き部４の下底に相当する。 The boundary portion 5 between the backrest portion 2 and the seat portion 3 extends in the width direction A2, and this boundary portion 5 corresponds to the upper bottom of the trapezoidal backrest portion 2 and the lower bottom of the trapezoidal seat portion 3. .. The boundary portion 6 between the seat portion 3 and the footrest portion 4 extends in the width direction A2, and the boundary portion 6 corresponds to the upper bottom of the trapezoidal seat portion 3 and the lower bottom of the trapezoidal footrest portion 4. To do.

背もたれ部２、座部３及び足置き部４の厚さ（高さ方向Ａ３の長さ）は、例えば、互いに同一であり、背もたれ部２、座部３及び足置き部４の長さ（長さ方向Ａ１の長さ）も互いに同一である。背もたれ部２の幅（幅方向Ａ２の長さ）は、座部３の幅、及び足置き部４の幅よりも広く、座部３の幅は足置き部４の幅よりも広い。従って、背もたれ部２の体積は、座部３の体積、及び足置き部４の体積のいずれよりも大きく、座部３の体積は足置き部４の体積よりも大きい。 The thicknesses of the backrest 2, the seat 3, and the footrest 4 (the length in the height direction A3) are, for example, the same as each other, and the lengths (length) of the backrest 2, the seat 3, and the footrest 4 are the same. The length in the longitudinal direction A1) is also the same as each other. The width of the backrest portion 2 (the length in the width direction A2) is wider than the width of the seat portion 3 and the width of the footrest portion 4, and the width of the seat portion 3 is wider than the width of the footrest portion 4. Therefore, the volume of the backrest portion 2 is larger than the volume of the seat portion 3 and the volume of the footrest portion 4, and the volume of the seat portion 3 is larger than the volume of the footrest portion 4.

背もたれ部２は、台形状の上面２ａと、長さ方向Ａ１に対して傾斜する長方形状の第１側面２ｂと、乗り物用シート１の長さ方向Ａ１の一端を成す長方形状の端面２ｃと、第１側面２ｂの反対側において長さ方向Ａ１及び高さ方向Ａ３に延びる長方形状の第２側面２ｄとを有する。 The backrest portion 2 includes a trapezoidal upper surface 2a, a rectangular first side surface 2b inclined with respect to the length direction A1, and a rectangular end surface 2c forming one end of the vehicle seat 1 in the length direction A1. On the opposite side of the first side surface 2b, it has a rectangular second side surface 2d extending in the length direction A1 and the height direction A3.

上面２ａ、第１側面２ｂ、端面２ｃ及び第２側面２ｄは、共に平坦状とされており、上面２ａの上に使用者Ｍの肩Ｍ１及び背中Ｍ２が乗せられる。第１側面２ｂは、壁Ｗを介して、幅方向Ａ２に隣接する乗り物用シート１の足置き部４に対向している。端面２ｃは、幅方向Ａ２及び高さ方向Ａ３に延在しており、端面２ｃと第２側面２ｄとは、例えば互いに直交している。 The upper surface 2a, the first side surface 2b, the end surface 2c, and the second side surface 2d are all flat, and the shoulder M1 and the back M2 of the user M are placed on the upper surface 2a. The first side surface 2b faces the footrest portion 4 of the vehicle seat 1 adjacent to the width direction A2 via the wall W. The end face 2c extends in the width direction A2 and the height direction A3, and the end face 2c and the second side surface 2d are, for example, orthogonal to each other.

座部３は、台形状の上面３ａと、長さ方向Ａ１に対して傾斜する長方形状の第１側面３ｂと、第１側面３ｂの反対側において長さ方向Ａ１及び高さ方向Ａ３に延びる長方形状の第２側面３ｃとを有する。上面３ａ、第１側面３ｂ及び第２側面３ｃは、共に平坦状とされており、上面３ａの上に使用者Ｍの臀部Ｍ３が乗せられる。第１側面３ｂ及び第２側面３ｃのそれぞれは、背もたれ部２の第１側面２ｂ及び第２側面２ｄのそれぞれと同一平面上に位置する。第１側面３ｂは、壁Ｗを介して、幅方向Ａ２に隣接する乗り物用シート１の座部３に対向している。 The seat portion 3 has a trapezoidal upper surface 3a, a rectangular first side surface 3b inclined with respect to the length direction A1, and a rectangle extending in the length direction A1 and the height direction A3 on the opposite side of the first side surface 3b. It has a second side surface 3c of the shape. The upper surface 3a, the first side surface 3b, and the second side surface 3c are all flat, and the buttocks M3 of the user M is placed on the upper surface 3a. Each of the first side surface 3b and the second side surface 3c is located on the same plane as each of the first side surface 2b and the second side surface 2d of the backrest portion 2. The first side surface 3b faces the seat portion 3 of the vehicle seat 1 adjacent to the width direction A2 via the wall W.

足置き部４は、台形状の上面４ａと、座部３の第１側面３ｂと同一平面上に位置する第１側面４ｂと、乗り物用シート１の長さ方向Ａ１の他端（背もたれ部２の端面２ｃの反対側の端部）を成す長方形状の端面４ｃと、座部３の第２側面３ｃと同一平面上に位置する第２側面４ｄと、を有する。 The footrest portion 4 includes a trapezoidal upper surface 4a, a first side surface 4b located on the same plane as the first side surface 3b of the seat portion 3, and the other end of the vehicle seat 1 in the length direction A1 (backrest portion 2). It has a rectangular end surface 4c forming an end portion on the opposite side of the end surface 2c of the seat portion 3 and a second side surface 4d located on the same plane as the second side surface 3c of the seat portion 3.

上面４ａ、第１側面４ｂ、端面４ｃ及び第２側面４ｄは、共に平坦状とされており、上面４ａには使用者Ｍの足Ｍ４が乗せられる。第１側面４ｂは、壁Ｗを介して幅方向Ａ２に隣接する乗り物用シート１の背もたれ部２に対向している。端面４ｃは、幅方向Ａ２及び高さ方向Ａ３に延在しており、端面４ｃと第２側面４ｄとは例えば互いに直交している。 The upper surface 4a, the first side surface 4b, the end surface 4c, and the second side surface 4d are all flat, and the foot M4 of the user M is placed on the upper surface 4a. The first side surface 4b faces the backrest portion 2 of the vehicle seat 1 adjacent to the width direction A2 via the wall W. The end face 4c extends in the width direction A2 and the height direction A3, and the end face 4c and the second side surface 4d are, for example, orthogonal to each other.

背もたれ部２の上面２ａ、座部３の上面３ａ、及び足置き部４の上面４ａは、ほぼ完全に平坦状（フルフラット）にされると共に、上面２ａ、上面３ａ、及び上面４ａの傾斜角度は、互いに変更することが可能となっている。このように、上面２ａ、上面３ａ及び上面４ａの傾斜角度が変更されることにより、乗り物用シート１の使用者Ｍに一層快適な眠りが提供される。 The upper surface 2a of the backrest portion 2, the upper surface 3a of the seat portion 3, and the upper surface 4a of the footrest portion 4 are made almost completely flat (full flat), and the inclination angles of the upper surface 2a, the upper surface 3a, and the upper surface 4a. Can be changed from each other. By changing the inclination angles of the upper surface 2a, the upper surface 3a, and the upper surface 4a in this way, the user M of the vehicle seat 1 is provided with a more comfortable sleep.

図３は、図２の背もたれ部２、座部３及び足置き部４のIII−III線断面図である。図３に示されるように、背もたれ部２は、高さ方向Ａ３の上側に位置する背面部２０と、背面部２０の下に位置する下部材２５とを含んでいる。また、座部３は、高さ方向Ａ３の上側に位置する座面部３０と、下部材３５とを含んでおり、足置き部４は、足置き部材４０と下部材４５とを含んでいる。 FIG. 3 is a sectional view taken along line III-III of the backrest portion 2, the seat portion 3, and the footrest portion 4 of FIG. As shown in FIG. 3, the backrest portion 2 includes a back surface portion 20 located on the upper side in the height direction A3 and a lower member 25 located below the back surface portion 20. Further, the seat portion 3 includes a seat surface portion 30 located on the upper side in the height direction A3 and a lower member 35, and the foot rest portion 4 includes a foot rest member 40 and a lower member 45.

背面部２０と足置き部材４０とは、例えば、互いに同一の構成とされており、下部材２５と下部材４５も互いに同一の構成とされている。また、下部材２５と下部材３５は、厚さが互いに異なっているが、厚さ以外の構成は、例えば互いに同一である。従って、以下の説明では、重複を回避するため、足置き部材４０、下部材３５及び下部材４５の説明を適宜省略する。 For example, the back surface portion 20 and the footrest member 40 have the same configuration as each other, and the lower member 25 and the lower member 45 also have the same configuration as each other. Further, the lower member 25 and the lower member 35 have different thicknesses, but the configurations other than the thickness are, for example, the same as each other. Therefore, in the following description, in order to avoid duplication, the description of the footrest member 40, the lower member 35, and the lower member 45 will be omitted as appropriate.

背面部２０は、ウレタン製である。背面部２０は、側面視で長方形状を成しており、背面部２０の厚さは、例えば６０ｍｍである。また、座面部３０は、背面部２０と同様、ウレタン製であり、側面視で長方形状を成しているが、座面部３０の厚さは、背面部２０の厚さよりも薄い。座面部３０の厚さと背面部２０の厚さとの比は、例えば、２：３であり、具体例として、座面部３０の厚さは４０ｍｍである。 The back surface 20 is made of urethane. The back surface portion 20 has a rectangular shape when viewed from the side, and the thickness of the back surface portion 20 is, for example, 60 mm. Further, the seat surface portion 30 is made of urethane like the back surface portion 20 and has a rectangular shape in a side view, but the thickness of the seat surface portion 30 is thinner than the thickness of the back surface portion 20. The ratio of the thickness of the seat surface portion 30 to the thickness of the back surface portion 20 is, for example, 2: 3, and as a specific example, the thickness of the seat surface portion 30 is 40 mm.

下部材２５は、背面部２０及び座面部３０よりも硬質の材料によって構成されている。下部材２５は下部材３５よりも薄くなっており、下部材２５の厚さ及び背面部２０の厚さの和は、下部材３５の厚さ及び座面部３０の厚さの和と例えば同一である。よって、前述したように背面部２０は座面部３０よりも厚くなっているので、背もたれ部２は座部３よりも柔らかくなっている。 The lower member 25 is made of a material that is harder than the back surface portion 20 and the seat surface portion 30. The lower member 25 is thinner than the lower member 35, and the sum of the thickness of the lower member 25 and the thickness of the back surface portion 20 is, for example, the same as the sum of the thickness of the lower member 35 and the thickness of the seat surface portion 30. is there. Therefore, as described above, since the back surface portion 20 is thicker than the seat surface portion 30, the backrest portion 2 is softer than the seat portion 3.

図４（ａ）に示されるように、背面部２０は、上側（背中Ｍ２側）に位置するウレタン製の第１部材２１と、第１部材２１の下側に位置しており第１部材２１よりも硬いウレタン製の第２部材２２とによって構成されている。第１部材２１及び第２部材２２の材料は共にウレタンであるが、第１部材２１は第２部材２２よりも柔らかいウレタンとされている。第１部材２１の物性は第２部材２２の物性と異なっており、例えば、第１部材２１の密度は第２部材２２の密度よりも小さい。 As shown in FIG. 4A, the back surface portion 20 is located below the first member 21 made of urethane located on the upper side (back M2 side) and the first member 21 located on the lower side of the first member 21. It is composed of a second member 22 made of urethane, which is harder than that. The material of the first member 21 and the second member 22 is both urethane, but the first member 21 is made of urethane which is softer than the second member 22. The physical properties of the first member 21 are different from those of the second member 22, for example, the density of the first member 21 is smaller than the density of the second member 22.

第１部材２１の厚さと第２部材２２の厚さは、例えば、互いに同一である。第１部材２１と第２部材２２とは、高さ方向Ａ３に互いに貼り合わされている。第１部材２１は、第２部材２２との貼り合わせ面２１Ａを備えており、第２部材２２は、第１部材２１との貼り合わせ面２２Ａを備えている。貼り合わせ面２１Ａ及び貼り合わせ面２２Ａは、互いに同一の形状とされており、互いに密着するように貼り合わされている。 The thickness of the first member 21 and the thickness of the second member 22 are, for example, the same as each other. The first member 21 and the second member 22 are bonded to each other in the height direction A3. The first member 21 is provided with a bonding surface 21A with the second member 22, and the second member 22 is provided with a bonding surface 22A with the first member 21. The bonded surface 21A and the bonded surface 22A have the same shape and are bonded so as to be in close contact with each other.

貼り合わせ面２１Ａ及び貼り合わせ面２２Ａは、互いに貼り合わされた状態において波形形状Ｐ１を成している。波形形状Ｐ１は、長さ方向Ａ１に延びている。波形形状Ｐ１は、複数の山部Ｐ１１、及び複数の谷部Ｐ１２から成っており、山部Ｐ１１及び谷部Ｐ１２は、長さ方向Ａ１に沿って交互に並んでいる。また、波形形状Ｐ１は、幅方向Ａ２の全体に亘って直線状に延びている。 The bonded surface 21A and the bonded surface 22A form a corrugated shape P1 in a state of being bonded to each other. The corrugated shape P1 extends in the length direction A1. The corrugated shape P1 is composed of a plurality of peaks P11 and a plurality of valleys P12, and the peaks P11 and valleys P12 are alternately arranged along the length direction A1. Further, the corrugated shape P1 extends linearly over the entire width direction A2.

図４（ｂ）に示されるように、座面部３０は、背面部２０の第１部材２１及び第２部材２２と同様、ウレタン製の第１部材３１及び第２部材３２によって構成されている。第１部材３１及び第２部材３２は、その厚さと貼り合わせ面の形状が、第１部材２１及び第２部材２２と異なっている。第１部材３１及び第２部材３２それぞれの材料は、例えば、第１部材２１及び第２部材２２それぞれの材料と同一である。 As shown in FIG. 4B, the seat surface portion 30 is composed of the first member 31 and the second member 32 made of urethane, similarly to the first member 21 and the second member 22 of the back surface portion 20. The thickness of the first member 31 and the second member 32 and the shape of the bonded surface are different from those of the first member 21 and the second member 22. The materials of the first member 31 and the second member 32 are the same as the materials of the first member 21 and the second member 22, for example.

第１部材３１の厚さと第２部材３２の厚さとは、例えば、互いに同一である。第１部材３１は第２部材３２との貼り合わせ面３１Ａを備えており、第２部材３２は第１部材３１との貼り合わせ面３２Ａを備えている。貼り合わせ面３１Ａ及び貼り合わせ面３２Ａは、互いに貼り合わされた状態において波形形状Ｐ２を成しており、波形形状Ｐ２は、長さ方向Ａ１に延びている。波形形状Ｐ２の山部Ｐ２１及び谷部Ｐ２２は、長さ方向Ａ１に沿って交互に並んでいる。また、波形形状Ｐ２は、幅方向Ａ２の全体に亘って直線状に延びている。 The thickness of the first member 31 and the thickness of the second member 32 are, for example, the same as each other. The first member 31 is provided with a bonding surface 31A with the second member 32, and the second member 32 is provided with a bonding surface 32A with the first member 31. The bonded surface 31A and the bonded surface 32A form a corrugated shape P2 in a state of being bonded to each other, and the corrugated shape P2 extends in the length direction A1. The peaks P21 and valleys P22 of the corrugated shape P2 are alternately arranged along the length direction A1. Further, the corrugated shape P2 extends linearly over the entire width direction A2.

波形形状Ｐ２の周期は、例えば、波形形状Ｐ１の周期よりも短い。一例として、波形形状Ｐ２の周期は、波形形状Ｐ１の周期の２／３である。このように、波形形状Ｐ２の周期と波形形状Ｐ１の周期との比は、２：３であってもよい。また、波形形状Ｐ２の周期と波形形状Ｐ１の周期との比が、座面部３０の高さと背面部２０の高さとの比と同一（２：３）であってもよい。波形形状Ｐ２の振幅と波形形状Ｐ１の振幅とは、例えば互いに同一であるが、異なっていてもよい。具体的には、波形形状Ｐ２の振幅と波形形状Ｐ１の振幅との比が２：３であってもよい。 The period of the waveform shape P2 is shorter than, for example, the period of the waveform shape P1. As an example, the period of the waveform shape P2 is 2/3 of the period of the waveform shape P1. As described above, the ratio of the period of the waveform shape P2 to the period of the waveform shape P1 may be 2: 3. Further, the ratio of the period of the waveform shape P2 to the period of the waveform shape P1 may be the same as the ratio of the height of the seat surface portion 30 to the height of the back surface portion 20 (2: 3). The amplitude of the waveform shape P2 and the amplitude of the waveform shape P1 are, for example, the same as each other, but may be different. Specifically, the ratio of the amplitude of the waveform shape P2 to the amplitude of the waveform shape P1 may be 2: 3.

図５に示されるように、背面部２０では、第１部材２１の上面に複数の第１スリット２３と複数の第２スリット２４が形成されている。各第１スリット２３は、長さ方向Ａ１及び幅方向Ａ２に対して４５°の角度を成す方向に延びており、各第２スリット２４は、第１スリット２３が延びる方向の直交方向に延びている。 As shown in FIG. 5, in the back surface portion 20, a plurality of first slits 23 and a plurality of second slits 24 are formed on the upper surface of the first member 21. Each first slit 23 extends in a direction forming an angle of 45 ° with respect to the length direction A1 and the width direction A2, and each second slit 24 extends in a direction orthogonal to the direction in which the first slit 23 extends. There is.

第１スリット２３及び第２スリット２４は、長さ方向Ａ１において交互に配置されている。また、第１スリット２３及び第２スリット２４は、幅方向Ａ２において交互に配置されている。よって、第１スリット２３及び第２スリット２４は、第１部材２１の上面において格子状に配置されている。具体的には、長さ方向Ａ１及び幅方向Ａ２に互いに隣接する４つの第１スリット２３が成す正方形部分の中央に第２スリット２４が配置され、長さ方向Ａ１及び幅方向Ａ２に互いに隣接する４つの第２スリット２４が成す正方形部分の中央に第１スリット２３が配置されている。第１スリット２３の大きさと第２スリット２４の大きさとは、例えば、互いに同一である。 The first slit 23 and the second slit 24 are alternately arranged in the length direction A1. Further, the first slit 23 and the second slit 24 are alternately arranged in the width direction A2. Therefore, the first slit 23 and the second slit 24 are arranged in a grid pattern on the upper surface of the first member 21. Specifically, the second slit 24 is arranged in the center of the square portion formed by the four first slits 23 adjacent to each other in the length direction A1 and the width direction A2, and is adjacent to each other in the length direction A1 and the width direction A2. The first slit 23 is arranged in the center of the square portion formed by the four second slits 24. The size of the first slit 23 and the size of the second slit 24 are, for example, the same as each other.

第１スリット２３は、曲線状に湾曲しながら延びる波形部２３ａと、波形部２３ａの長手方向の両端において拡径された拡径部２３ｂとを有する。波形部２３ａは、例えば、２つの山部と２つの谷部とを含んでいる。拡径部２３ｂの形状は、例えば円形である。第２スリット２４は、第１スリット２３の波形部２３ａ及び拡径部２３ｂと同様の波形部２４ａと拡径部２４ｂとを有する。 The first slit 23 has a corrugated portion 23a extending while curving in a curved shape, and a diameter-expanded portion 23b whose diameter is expanded at both ends of the corrugated portion 23a in the longitudinal direction. The corrugated portion 23a includes, for example, two peaks and two valleys. The shape of the enlarged diameter portion 23b is, for example, a circle. The second slit 24 has a corrugated portion 23a and a diameter-expanded portion 24b similar to the corrugated portion 23a and the diameter-expanded portion 23b of the first slit 23.

以上のように、第１スリット２３及び第２スリット２４を備えることにより、背面部２０は一層柔らかくされており、快適な寝心地が使用者Ｍに提供される。また、上記では第１部材２１が第１スリット２３及び第２スリット２４を備えていたが、第２部材２２が第１スリット２３及び第２スリット２４を備えていてもよい。更には、第１部材３１及び第２部材３２の少なくともいずれかが第１スリット２３及び第２スリット２４を備えていてもよい。また、第１スリット２３及び第２スリット２４が設けられる場所、すなわち、第１スリット２３及び第２スリット２４の配置は適宜変更可能である。 As described above, by providing the first slit 23 and the second slit 24, the back surface portion 20 is further softened, and a comfortable sleeping comfort is provided to the user M. Further, in the above, the first member 21 includes the first slit 23 and the second slit 24, but the second member 22 may include the first slit 23 and the second slit 24. Further, at least one of the first member 31 and the second member 32 may include the first slit 23 and the second slit 24. Further, the place where the first slit 23 and the second slit 24 are provided, that is, the arrangement of the first slit 23 and the second slit 24 can be changed as appropriate.

次に、本実施形態に係る乗り物用シート１から得られる作用効果について説明する。 Next, the action and effect obtained from the vehicle seat 1 according to the present embodiment will be described.

図１及び図３に示されるように、乗り物用シート１では、使用者Ｍの肩Ｍ１及び背中Ｍ２が乗せられる背面部２０と、使用者Ｍの臀部Ｍ３が乗せられる座面部３０が共にウレタン製である。よって、背面部２０及び座面部３０は、共に、軽量であって且つ高いクッション性を有するため、使用者Ｍの肩Ｍ１、背中Ｍ２及び臀部Ｍ３に対するフィット感を良好にすることができる。 As shown in FIGS. 1 and 3, in the vehicle seat 1, the back portion 20 on which the shoulder M1 and back M2 of the user M are placed and the seat surface portion 30 on which the buttocks M3 of the user M are placed are both made of urethane. Is. Therefore, since both the back surface portion 20 and the seat surface portion 30 are lightweight and have high cushioning properties, it is possible to improve the fit of the user M to the shoulders M1, the back M2, and the buttocks M3.

また、使用者Ｍの肩Ｍ１及び背中Ｍ２が乗せられる背面部２０の厚さは、座面部３０の厚さよりも厚い。よって、使用者Ｍが寝返りを打ったときに、使用者Ｍの肩Ｍ１を背面部２０に入り込ませることができるので、背面部２０に対する肩Ｍ１の沈み込みを良好にすることができる。従って、寝返り性を高めることができるので、航空機内において快適な眠りを使用者Ｍに提供し続けることができる。 Further, the thickness of the back surface portion 20 on which the shoulder M1 and the back surface M2 of the user M are placed is thicker than the thickness of the seat surface portion 30. Therefore, when the user M rolls over, the shoulder M1 of the user M can be inserted into the back surface portion 20, so that the sinking of the shoulder M1 with respect to the back surface portion 20 can be improved. Therefore, since it is possible to improve the ability to turn over, it is possible to continue to provide the user M with a comfortable sleep in the aircraft.

また、背面部２０は、背中Ｍ２側に位置する第１部材２１と、第１部材２１から見て背中Ｍ２の反対側に位置しており第１部材２１よりも硬い第２部材２２と、を含んでおり、第１部材２１と第２部材２２とは、貼り合わされている。そして、第１部材２１の第２部材２２との貼り合わせ面２１Ａ、及び第２部材２２の第１部材２１との貼り合わせ面２２Ａは、波形形状Ｐ１とされている。このように貼り合わせ面２１Ａ，２２Ａを波形形状Ｐ１とすることにより、貼り合わせ面２１Ａ，２２Ａにおいて体圧を分散しやすくすることができる。 Further, the back surface portion 20 includes a first member 21 located on the back M2 side and a second member 22 located on the opposite side of the back M2 from the first member 21 and harder than the first member 21. The first member 21 and the second member 22 are bonded to each other. The bonding surface 21A of the first member 21 with the second member 22 and the bonding surface 22A of the second member 22 with the first member 21 have a corrugated shape P1. By forming the bonded surfaces 21A and 22A into the corrugated shape P1 in this way, it is possible to easily disperse the body pressure on the bonded surfaces 21A and 22A.

すなわち、使用者Ｍの体圧を貼り合わせ面２１Ａ，２２Ａにおいて分散しやすくすることができる。従って、体圧分散性を良好にすることにより、使用者Ｍの肩Ｍ１及び背中Ｍ２に対する圧迫感を一層軽減させることができるので、航空機内の使用者Ｍに快適な寝心地を提供し続けることができる。以上の効果は、座面部３０及び足置き部材４０からも同様に得られる。 That is, the body pressure of the user M can be easily dispersed on the bonded surfaces 21A and 22A. Therefore, by improving the body pressure dispersibility, the feeling of pressure on the shoulder M1 and the back M2 of the user M can be further reduced, so that the user M in the aircraft can continue to be provided with a comfortable sleeping comfort. it can. The above effects can be similarly obtained from the seat surface portion 30 and the footrest member 40.

また、波形形状Ｐ１を形成する山部Ｐ１１及び谷部Ｐ１２は、背面部２０及び座面部３０が並ぶ長さ方向Ａ１に沿って並設されている。よって、波形形状Ｐ１の山部Ｐ１１と谷部Ｐ１２とは、使用者Ｍの身体が延びる方向に沿って並ぶことになる。従って、山部と谷部とが別の方向に並ぶ場合と比較して、体圧を一層分散させやすくすることができる。このように、体圧分散性を更に良好にすることにより、使用者Ｍに提供する寝心地を更に快適にすることができる。この効果は、座面部３０の波形形状Ｐ２からも同様に得られる。 Further, the mountain portion P11 and the valley portion P12 forming the corrugated shape P1 are arranged side by side along the length direction A1 in which the back surface portion 20 and the seat surface portion 30 are lined up. Therefore, the peaks P11 and the valleys P12 of the waveform shape P1 are aligned along the direction in which the body of the user M extends. Therefore, it is possible to make it easier to disperse the body pressure as compared with the case where the mountain portion and the valley portion are lined up in different directions. In this way, by further improving the body pressure dispersibility, the sleeping comfort provided to the user M can be further made more comfortable. This effect can also be obtained from the corrugated shape P2 of the seat surface portion 30.

また、本実施形態では、背面部２０の厚さが座面部３０の厚さよりも厚いので、航空機用のシートとして求められる硬度に導きやすいという利点もある。航空機用のシートの硬度としては、座面部を含む座部の硬度が、背面部を含む背もたれ部の硬度よりも高い硬度が求められるという事情がある。 Further, in the present embodiment, since the thickness of the back surface portion 20 is thicker than the thickness of the seat surface portion 30, there is an advantage that it is easy to lead to the hardness required for an aircraft seat. As the hardness of the seat for an aircraft, there is a circumstance that the hardness of the seat portion including the seat surface portion is required to be higher than the hardness of the backrest portion including the back surface portion.

本実施形態に係る乗り物用シート１は、前述した航空機用のシートとして求められる硬度が考慮されたものである。すなわち、乗り物用シート１では、下部材２５，３５の硬度が背面部２０及び座面部３０の硬度よりも高く、且つ、座面部３０の厚さが背面部２０の厚さよりも薄いので、座部３の硬度は背もたれ部２の硬度よりも高くなる。このように、背面部２０が座面部３０よりも厚いことによって、座部３を背もたれ部２よりも硬くすることができるので、航空機用のシートとして求められる硬度に導きやすくすることができる。 The vehicle seat 1 according to the present embodiment takes into consideration the hardness required for the above-mentioned aircraft seat. That is, in the vehicle seat 1, the hardness of the lower members 25 and 35 is higher than the hardness of the back surface portion 20 and the seat surface portion 30, and the thickness of the seat surface portion 30 is thinner than the thickness of the back surface portion 20. The hardness of 3 is higher than the hardness of the backrest portion 2. As described above, since the back surface portion 20 is thicker than the seat surface portion 30, the seat portion 3 can be made harder than the backrest portion 2, so that it is possible to easily lead to the hardness required for an aircraft seat.

また、乗り物用シート１では、背面部２０の第１部材２１がスリット２３，２４を備えている。従って、第１部材２１をより柔らかくすることができるので、使用者Ｍの肩Ｍ１を一層背面部２０に入り込みやすくすることができ、更なる寝心地の向上に寄与する。また、前述したように第１部材２１が第１スリット２３と第２スリット２４とを備えることにより、背面部２０を更に柔らかくすることができるので、一層使用者Ｍの寝心地が良好となる。 Further, in the vehicle seat 1, the first member 21 of the back surface portion 20 includes slits 23 and 24. Therefore, since the first member 21 can be made softer, the shoulder M1 of the user M can be made easier to enter the back surface portion 20, which further contributes to the improvement of sleeping comfort. Further, as described above, since the first member 21 includes the first slit 23 and the second slit 24, the back surface portion 20 can be further softened, so that the sleeping comfort of the user M is further improved.

また、乗り物用シート１の背面部２０では、第１部材２１の貼り合わせ面２１Ａ、及び第２部材２２の貼り合わせ面２２Ａが互いに同一の形状とされており、互いに密着するように貼り合わされている。よって、貼り合わせ面２１Ａ及び貼り合わせ面２２Ａの間には、空気の通り道が設けられていない。このように、空気の通り道が貼り合わせ面２１Ａ及び貼り合わせ面２２Ａの間に形成されないので、不燃性が高い乗り物用シート１とすることができる。この効果は、座面部３０及び足置き部材４０からも同様に得られる。 Further, in the back surface portion 20 of the vehicle seat 1, the bonding surface 21A of the first member 21 and the bonding surface 22A of the second member 22 have the same shape and are bonded so as to be in close contact with each other. There is. Therefore, no air passage is provided between the bonded surface 21A and the bonded surface 22A. As described above, since the air passage is not formed between the bonded surface 21A and the bonded surface 22A, the vehicle seat 1 having high nonflammability can be obtained. This effect is also obtained from the seat surface portion 30 and the footrest member 40.

（第２実施形態）
次に、第２実施形態に係る乗り物用シートについて図６〜図９を参照しながら説明する。以降の説明では、第１実施形態と重複する説明を適宜省略する。第２実施形態に係る乗り物用シートは、第１実施形態の背面部２０及び座面部３０とは異なる形状の背面部５０及び座面部６０を備えている。 (Second Embodiment)
Next, the vehicle seat according to the second embodiment will be described with reference to FIGS. 6 to 9. In the following description, the description overlapping with the first embodiment will be omitted as appropriate. The vehicle seat according to the second embodiment includes a back surface portion 50 and a seat surface portion 60 having a shape different from that of the back surface portion 20 and the seat surface portion 30 of the first embodiment.

図６及び図７に示されるように、背面部５０は、略直方体状を成しており、背面部５０の厚さは、例えば８０ｍｍである。背面部５０は、上側（背中Ｍ２側）に位置するウレタン製の第１部材５１と、第１部材５１の下側に位置するウレタン製の第２部材５２とによって構成されている。第１部材５１の硬度と第２部材５２の硬度とは、例えば、互いに同一である。また、第１部材５１の素材は第２部材５２の素材と同一であってもよいし異なっていてもよい。 As shown in FIGS. 6 and 7, the back surface portion 50 has a substantially rectangular parallelepiped shape, and the thickness of the back surface portion 50 is, for example, 80 mm. The back surface portion 50 is composed of a urethane first member 51 located on the upper side (back M2 side) and a urethane second member 52 located on the lower side of the first member 51. The hardness of the first member 51 and the hardness of the second member 52 are, for example, the same as each other. Further, the material of the first member 51 may be the same as or different from the material of the second member 52.

第１部材５１の厚さと第２部材５２の厚さは、例えば、互いに同一であり、共に４０ｍｍである。第１部材５１の第２部材５２との貼り合わせ面５１Ａ、及び第２部材５２の第１部材５１との貼り合わせ面５２Ａは、共に平坦面である。貼り合わせ面５１Ａ及び貼り合わせ面５２Ａは、互いに密着した状態で貼り合わされている。 The thickness of the first member 51 and the thickness of the second member 52 are, for example, the same as each other, and both are 40 mm. The bonding surface 51A of the first member 51 with the second member 52 and the bonding surface 52A of the second member 52 with the first member 51 are both flat surfaces. The bonded surface 51A and the bonded surface 52A are bonded to each other in close contact with each other.

第１部材５１の上側の面５１Ｂは、波形形状Ｐ３を成している。この波形形状Ｐ３は、長さ方向Ａ１及び幅方向Ａ２のそれぞれに延びている。波形形状Ｐ３は、例えば、二次元的に延びる正弦波状とされている。波形形状Ｐ３は、例えば、面５１Ｂの全体に形成されている。このような第１部材５１は、ウレタン素材にプロファイル加工が施されることによって形成される。具体的には、直方体状のウレタン素材をプロファイルカッターで切断することによって形成される。また、第２部材５２は、直方体状とされている。 The upper surface 51B of the first member 51 has a corrugated shape P3. The corrugated shape P3 extends in each of the length direction A1 and the width direction A2. The waveform shape P3 is, for example, a sinusoidal shape extending two-dimensionally. The corrugated shape P3 is formed on, for example, the entire surface 51B. Such a first member 51 is formed by subjecting a urethane material to profile processing. Specifically, it is formed by cutting a rectangular parallelepiped urethane material with a profile cutter. Further, the second member 52 has a rectangular parallelepiped shape.

図８及び図９に示されるように、座面部６０は、背面部５０と同様、ウレタン製であり、略直方体状を成している。座面部６０の下には、座面部６０よりも硬い下部材６５が貼り付けられている。座面部６０の下部材６５との貼り合わせ面は、平坦状である。座面部６０の厚さと背面部５０の厚さとの比は、例えば、１：１であり、座面部６０の厚さは４０ｍｍである。なお、下部材６５は、図８及び図９のように一層設けられていてもよいし、複数層設けられていてもよい。 As shown in FIGS. 8 and 9, the seat surface portion 60 is made of urethane like the back surface portion 50, and has a substantially rectangular parallelepiped shape. A lower member 65, which is harder than the seat surface portion 60, is attached under the seat surface portion 60. The bonding surface of the seat surface portion 60 with the lower member 65 is flat. The ratio of the thickness of the seat surface portion 60 to the thickness of the back surface portion 50 is, for example, 1: 1 and the thickness of the seat surface portion 60 is 40 mm. The lower member 65 may be provided in one layer as shown in FIGS. 8 and 9, or may be provided in a plurality of layers.

座面部６０の上側の面６１は、波形形状Ｐ４を成しており、この波形形状Ｐ４は、長さ方向Ａ１及び幅方向Ａ２のそれぞれに延びている。波形形状Ｐ４は、例えば、二次元的に延びる正弦波とされており、面６１の全体に形成されている。座面部６０は、ウレタン素材にプロファイル加工が施されることによって形成される。また、座面部６０の形状及び材料は、背面部５０と同一であってもよいし異なっていてもよい。 The upper surface 61 of the seat surface portion 60 has a corrugated shape P4, and the corrugated shape P4 extends in each of the length direction A1 and the width direction A2. The corrugated shape P4 is, for example, a sine wave extending two-dimensionally, and is formed on the entire surface 61. The seat surface portion 60 is formed by subjecting the urethane material to profile processing. Further, the shape and material of the seat surface portion 60 may be the same as or different from that of the back surface portion 50.

以上、第２実施形態に係る乗り物用シートでは、第１実施形態と同様、使用者Ｍの肩Ｍ１及び背中Ｍ２が乗せられる背面部５０の厚さが、座面部６０の厚さよりも厚い。よって、使用者Ｍが寝返りを打ったときに、使用者Ｍの肩Ｍ１を背面部５０に入り込ませることができるので、背面部５０に対する肩Ｍ１の沈み込みを良好にすることができる。従って、第１実施形態と同様の効果が得られる。 As described above, in the vehicle seat according to the second embodiment, the thickness of the back surface portion 50 on which the shoulder M1 and the back M2 of the user M are placed is thicker than the thickness of the seat surface portion 60, as in the first embodiment. Therefore, when the user M rolls over, the shoulder M1 of the user M can be inserted into the back surface portion 50, so that the sinking of the shoulder M1 with respect to the back surface portion 50 can be improved. Therefore, the same effect as that of the first embodiment can be obtained.

また、背面部５０の背中Ｍ２側の面５１Ｂには、凹凸（波形形状Ｐ３）が形成されている。よって、使用者Ｍの肩Ｍ１及び背中Ｍ２が背面部５０の凹凸に接するので、肩Ｍ１及び背中Ｍ２が乗せられることによる体圧分散性を高めることができる。すなわち、背面部５０の凹凸によって体圧を分散しやすくすることができるので、使用者Ｍの肩Ｍ１及び背中Ｍ２に対する圧迫感を軽減させることができる。従って、乗り物内の使用者Ｍに快適な寝心地を提供することができる。 Further, unevenness (corrugated shape P3) is formed on the surface 51B on the back M2 side of the back surface portion 50. Therefore, since the shoulder M1 and the back M2 of the user M come into contact with the unevenness of the back surface portion 50, the body pressure dispersibility due to the shoulder M1 and the back M2 being placed can be enhanced. That is, since the body pressure can be easily dispersed by the unevenness of the back surface portion 50, the feeling of pressure on the shoulder M1 and the back M2 of the user M can be reduced. Therefore, it is possible to provide a comfortable sleeping comfort to the user M in the vehicle.

以上、本発明の各実施形態について説明したが、本発明は、前述した各実施形態に限定されるものではなく、特許請求の範囲に記載した要旨を変更しない範囲で変形し、又は他のものに適用したものであってもよい。すなわち、本発明は、特許請求の範囲に記載した要旨を変更しない範囲で種々の変形が可能である。 Although each embodiment of the present invention has been described above, the present invention is not limited to each of the above-described embodiments, and the present invention is modified or other things without changing the gist described in the claims. It may be applied to. That is, the present invention can be modified in various ways without changing the gist described in the claims.

例えば、前述の第１実施形態では、平面視において台形状とされた乗り物用シート１について説明した。しかしながら、乗り物用シートの平面視における形状は、台形状でなくてもよく、適宜変更可能である。本発明に係る乗り物用シートの平面形状は、例えば、長方形であってもよい。 For example, in the above-described first embodiment, the vehicle seat 1 having a trapezoidal shape in a plan view has been described. However, the shape of the vehicle seat in a plan view does not have to be trapezoidal and can be changed as appropriate. The planar shape of the vehicle seat according to the present invention may be, for example, a rectangle.

また、前述の第１実施形態では、足置き部４を備える乗り物用シート１について説明したが、足置き部４を省略することも可能である。更に、第１実施形態では、下部材２５，３５それぞれの上に背面部２０及び座面部３０のそれぞれが乗せられた乗り物用シート１について説明した。しかしながら、下部材の形状、大きさ、数及び材料については適宜変更可能である。また、第１実施形態では、背面部２０と足置き部材４０とが互いに同一の構成とされている例について説明したが、座面部と足置き部材とが互いに同一の構成とされていてもよい。 Further, in the above-described first embodiment, the vehicle seat 1 including the footrest portion 4 has been described, but the footrest portion 4 can be omitted. Further, in the first embodiment, the vehicle seat 1 on which the back surface portion 20 and the seat surface portion 30 are respectively placed on the lower members 25 and 35 has been described. However, the shape, size, number and material of the lower member can be changed as appropriate. Further, in the first embodiment, an example in which the back surface portion 20 and the footrest member 40 have the same configuration as each other has been described, but the seat surface portion and the footrest member may have the same configuration as each other. ..

また、前述の第１実施形態では、背面部２０の厚さが６０ｍｍ、座面部３０の厚さが４０ｍｍである乗り物用シート１について説明した。しかしながら、背面部の厚さ、及び座面部の厚さは、上記の値に限られず適宜変更可能である。更に、前述の第１実施形態では、波形形状Ｐ２の周期が、波形形状Ｐ１の周期の２／３である波形形状Ｐ１，Ｐ２を備えた背面部２０及び座面部３０について説明した。しかしながら、本発明に係る乗り物用シートにおいて、波形形状の周期及び振幅は適宜変更可能である。 Further, in the above-described first embodiment, the vehicle seat 1 in which the thickness of the back surface portion 20 is 60 mm and the thickness of the seat surface portion 30 is 40 mm has been described. However, the thickness of the back surface portion and the thickness of the seat surface portion are not limited to the above values and can be changed as appropriate. Further, in the above-described first embodiment, the back surface portion 20 and the seat surface portion 30 having the waveform shapes P1 and P2 in which the period of the waveform shape P2 is two-thirds of the period of the waveform shape P1 have been described. However, in the vehicle seat according to the present invention, the period and amplitude of the corrugated shape can be appropriately changed.

また、前述の第２実施形態では、第１部材５１の第２部材５２との貼り合わせ面５１Ａ、及び第２部材５２の第１部材５１との貼り合わせ面５２Ａが、共に平坦面である例について説明した。しかしながら、貼り合わせ面５１Ａ及び貼り合わせ面５２Ａが、第１実施形態の波形形状Ｐ１のような波形形状を成していてもよい。すなわち、貼り合わせ面５１Ａ及び貼り合わせ面５２Ａの形状は適宜変更可能である。 Further, in the above-described second embodiment, the bonding surface 51A of the first member 51 with the second member 52 and the bonding surface 52A of the second member 52 with the first member 51 are both flat surfaces. Was explained. However, the bonded surface 51A and the bonded surface 52A may have a waveform shape similar to the waveform shape P1 of the first embodiment. That is, the shapes of the bonded surface 51A and the bonded surface 52A can be changed as appropriate.

また、前述の第２実施形態では、二次元的に延びる正弦波状とされた波形形状Ｐ３について説明したが、第１部材５１の上側の面５１Ｂ、及び座面部６０の上側の面６１、の形状及び大きさは適宜変更可能である。 Further, in the above-described second embodiment, the waveform shape P3 having a sinusoidal shape extending two-dimensionally has been described, but the shape of the upper surface 51B of the first member 51 and the upper surface 61 of the seat surface portion 60. And the size can be changed as appropriate.

例えば、図１０（ａ）に示されるように、上側に正弦波状の凸部７１が二次元的且つ連続的に並設された背面部７０において、凸部７１が上側から順に第１硬質層７１ａと、軟質層７１ｂと、第２硬質層７１ｃとを備えていてもよい。この場合、背面部７０は、第１硬質層７１ａ、軟質層７１ｂ及び第２硬質層７１ｃを備えた三層構造となっている。従って、使用者Ｍの肩Ｍ１及び背中Ｍ２が乗せられたときに、第１硬質層７１ａ及び第２硬質層７１ｃの間に挟まれた軟質層７１ｂにより、長時間使用しても良好なフィット感を使用者Ｍに与え続けることが可能となる。 For example, as shown in FIG. 10A, in the back surface portion 70 in which the sinusoidal convex portions 71 are arranged two-dimensionally and continuously on the upper side, the convex portions 71 are the first hard layer 71a in order from the upper side. The soft layer 71b and the second hard layer 71c may be provided. In this case, the back surface portion 70 has a three-layer structure including a first hard layer 71a, a soft layer 71b, and a second hard layer 71c. Therefore, when the shoulder M1 and back M2 of the user M are placed, the soft layer 71b sandwiched between the first hard layer 71a and the second hard layer 71c provides a good fit even when used for a long time. Can be continuously given to the user M.

なお、第１硬質層７１ａの硬さと第２硬質層７１ｃの硬さは、互いに同一であってもよいし、互いに異なっていてもよい。また、第１硬質層７１ａ、軟質層７１ｂ及び第２硬質層７１ｃの三層構造を備えた背面部７０に代えて、第１軟質層、硬質層及び第２軟質層の三層構造を備えた背面部を備えていてもよい。 The hardness of the first hard layer 71a and the hardness of the second hard layer 71c may be the same as each other or may be different from each other. Further, instead of the back surface portion 70 having the three-layer structure of the first hard layer 71a, the soft layer 71b and the second hard layer 71c, a three-layer structure of the first soft layer, the hard layer and the second soft layer was provided. It may have a back part.

また、図１０（ｂ）に示されるように、背面部８０の上側において、頂部８１ｃを有する略放物線状の凸部８１が二次元的且つ連続的に並設されていてもよい。凸部８１は、上側から順に軟質層８１ａと硬質層８１ｂとを備える。硬質層８１ｂは、外面が湾曲する截頭四角錐状とされており、軟質層８１ａは、各辺が湾曲すると共に頂部８１ｃを有する四角錐状とされている。この背面部８０では、硬質層８１ｂで使用者Ｍの肩Ｍ１及び背中Ｍ２をしっかりと支えると共に、軟質層８１ａで使用者Ｍに良好なフィット感を与えることができる。 Further, as shown in FIG. 10B, substantially parabolic convex portions 81 having a top portion 81c may be arranged two-dimensionally and continuously on the upper side of the back surface portion 80. The convex portion 81 includes a soft layer 81a and a hard layer 81b in this order from the upper side. The hard layer 81b has a quadrangular pyramid shape with a curved outer surface, and the soft layer 81a has a quadrangular pyramid shape with curved sides and a top 81c. In the back surface portion 80, the hard layer 81b can firmly support the shoulder M1 and the back M2 of the user M, and the soft layer 81a can give the user M a good fit.

なお、図１０（ｂ）では、軟質層８１ａが上側、硬質層８１ｂが下側に位置する背面部８０について説明したが、硬質層が上側、軟質層が下側に位置する背面部を備えていてもよい。以上、背面部の変形例について説明したが、座面部についても同様に変形することが可能である。 Although the back surface portion 80 in which the soft layer 81a is located on the upper side and the hard layer 81b is located on the lower side is described in FIG. 10B, the back surface portion 80 in which the hard layer is located on the upper side and the soft layer is located on the lower side is provided. You may. Although the modification of the back surface portion has been described above, the seat surface portion can be similarly deformed.

（実施例）
次に、第１実施形態に係る乗り物用シート１の実施例、及び乗り物用シート１を用いたときの沈み込み及び体圧について検証した実験について説明する。なお、本発明は、以下の実施例に限定されるものではない。実施例に係る乗り物用シートは、図３に示されるように、背面部２０の厚さが座面部３０の厚さよりも厚く、背面部２０の厚さは６０ｍｍであり、座面部３０の厚さは４０ｍｍである。一方、比較例に係る乗り物用シートは、背面部２０の厚さ、及び座面部３０の厚さが共に６０ｍｍである。本実験では、実施例に係る乗り物用シート、及び比較例に係る乗り物用シートのそれぞれに被験者を寝かせ、そのときの沈み込み及び体圧について測定した。 (Example)
Next, an example of the vehicle seat 1 according to the first embodiment, and an experiment for verifying subduction and body pressure when the vehicle seat 1 is used will be described. The present invention is not limited to the following examples. In the vehicle seat according to the embodiment, as shown in FIG. 3, the thickness of the back surface portion 20 is thicker than the thickness of the seat surface portion 30, the thickness of the back surface portion 20 is 60 mm, and the thickness of the seat surface portion 30. Is 40 mm. On the other hand, in the vehicle seat according to the comparative example, the thickness of the back surface portion 20 and the thickness of the seat surface portion 30 are both 60 mm. In this experiment, the subjects were laid down on the vehicle seats according to the examples and the vehicle seats according to the comparative examples, and the subduction and body pressure at that time were measured.

本実験の結果、比較例の乗り物用シートでは、沈み込みの最大値が４９．０ｍｍ、沈み込みの領域ごとの標準偏差が１８．３ｍｍであった。これに対し、実施例の乗り物用シートでは、沈み込みの最大値が４８．０ｍｍ、沈み込みの領域ごとの標準偏差が１７．７ｍｍであった。この結果より、実施例の乗り物用シートは、比較例の乗り物用シートと比較して、沈み込みの領域ごとの偏りが少ない。従って、実施例の乗り物用シートは、比較例の乗り物用シートよりも寝姿勢保持性が高いことが分かった。 As a result of this experiment, in the vehicle seat of the comparative example, the maximum value of subduction was 49.0 mm, and the standard deviation for each subduction zone was 18.3 mm. On the other hand, in the vehicle seat of the example, the maximum value of subduction was 48.0 mm, and the standard deviation for each subduction zone was 17.7 mm. From this result, the vehicle seat of the example has less bias in each subduction zone as compared with the vehicle seat of the comparative example. Therefore, it was found that the vehicle seat of the example has higher sleeping posture retention than the vehicle seat of the comparative example.

また、比較例の乗り物用シートでは、体圧の最大値が３０．７ｍｍＨｇ、体圧の領域ごとの平均値が９．４ｍｍＨｇであり、実施例の乗り物用シートでは、体圧の最大値が３０．３ｍｍＨｇ、体圧の領域ごとの平均値が９．３ｍｍＨｇであった。このように、実施例の乗り物用シートは、比較例の乗り物用シートよりも、体圧の最大値、及び体圧の平均値が小さかった。従って、実施例の乗り物用シートは、比較例の乗り物用シートよりも、体圧の値が小さいので、体圧分散性を高めることができるということが分かった。 Further, in the vehicle seat of the comparative example, the maximum value of the body pressure is 30.7 mmHg, the average value for each body pressure region is 9.4 mmHg, and in the vehicle seat of the example, the maximum value of the body pressure is 30. The average value for each region of body pressure was 9.3 mmHg, which was 9.3 mmHg. As described above, the vehicle seats of the examples had smaller maximum body pressure values and average body pressure values than the vehicle seats of the comparative examples. Therefore, it was found that the vehicle seat of the example has a smaller body pressure value than the vehicle seat of the comparative example, so that the body pressure dispersibility can be improved.

１…乗り物用シート、２…背もたれ部、２ａ…上面、２ｂ…第１側面、２ｃ…端面、２ｄ…第２側面、３…座部、３ａ…上面、３ｂ…第１側面、３ｃ…第２側面、４…足置き部、４ａ…上面、４ｂ…第１側面、４ｃ…端面、４ｄ…第２側面、５，６…境目部分、２０，５０，７０，８０…背面部、２１，５１…第１部材、２１Ａ，２２Ａ，５１Ａ，５２Ａ…貼り合わせ面、２２，５２…第２部材、２３…第１スリット、２３ａ，２４ａ…波形部、２３ｂ，２４ｂ…拡径部、２４…第２スリット、２５，３５，４５，６５…下部材、３０，６０…座面部、３１…第１部材、３１Ａ，３２Ａ…貼り合わせ面、３２…第２部材、４０…足置き部材、６１…面、７１，８１…凸部、７１ａ…第１硬質層、７１ｂ…軟質層、７１ｃ…第２硬質層、８１…凸部、８１ａ…軟質層、８１ｂ…硬質層、８１ｃ…頂部、Ａ１…長さ方向、Ａ２…幅方向、Ａ３…高さ方向、Ｍ…使用者、Ｍ１…肩、Ｍ２…背中、Ｍ３…臀部、Ｍ４…足、Ｐ１，Ｐ２，Ｐ３，Ｐ４…波形形状、Ｐ１１，Ｐ２１…山部、Ｐ１２，Ｐ２２…谷部、Ｗ…壁。 1 ... Vehicle seat, 2 ... Backrest, 2a ... Top surface, 2b ... First side surface, 2c ... End face, 2d ... Second side surface, 3 ... Seat part, 3a ... Top surface, 3b ... First side surface, 3c ... Second Side surface, 4 ... Foot rest part, 4a ... Top surface, 4b ... First side surface, 4c ... End face, 4d ... Second side surface, 5, 6 ... Boundary part, 20, 50, 70, 80 ... Back part, 21, 51 ... 1st member, 21A, 22A, 51A, 52A ... Laminated surface, 22, 52 ... 2nd member, 23 ... 1st slit, 23a, 24a ... Corrugated part, 23b, 24b ... Enlarged part, 24 ... 2nd slit , 25, 35, 45, 65 ... Lower member, 30, 60 ... Seat surface, 31 ... First member, 31A, 32A ... Laminated surface, 32 ... Second member, 40 ... Footrest member, 61 ... Surface, 71 , 81 ... convex portion, 71a ... first hard layer, 71b ... soft layer, 71c ... second hard layer, 81 ... convex portion, 81a ... soft layer, 81b ... hard layer, 81c ... top, A1 ... length direction, A2 ... width direction, A3 ... height direction, M ... user, M1 ... shoulder, M2 ... back, M3 ... buttocks, M4 ... feet, P1, P2, P3, P4 ... waveform shape, P11, P21 ... Yamabe, P12, P22 ... Tanibe, W ... Wall.

Claims (3)

乗り物の内部において使用される乗り物用シートであって、
使用者の肩及び背中が乗せられる背面部と、
前記使用者の臀部が乗せられる座面部と、
を含んでおり、
前記背面部及び前記座面部は、共にウレタン製であり、
前記背面部の厚さは、前記座面部の厚さよりも厚く、
前記背面部は、前記背中側に位置する第１部材と、前記第１部材から見て前記背中の反対側に位置しており前記第１部材よりも硬い第２部材と、を含んでおり、
前記第１部材と前記第２部材とは、互いに貼り合わされており、
前記第１部材の前記第２部材との貼り合わせ面、及び前記第２部材の前記第１部材との貼り合わせ面が第１波形形状とされており、
前記座面部は、前記臀部側に位置する第３部材と、前記第３部材から見て前記臀部の反対側に位置しており前記第３部材よりも硬い第４部材と、を含んでおり、
前記第３部材と前記第４部材とは、互いに貼り合わされており、
前記第３部材の前記第４部材との貼り合わせ面、及び前記第４部材の前記第３部材との貼り合わせ面が第２波形形状とされており、
前記第２波形形状の周期は、前記第１波形形状の周期よりも短い、
乗り物用シート。 A vehicle seat used inside a vehicle
The back part on which the user's shoulders and back can be placed,
The seat on which the user's buttocks are placed and
Includes
Both the back surface portion and the seat surface portion are made of urethane.
The thickness of the rear portion, rather thick than the thickness of the seat surface portion,
The back surface portion includes a first member located on the back side and a second member located on the opposite side of the back side of the first member and harder than the first member.
The first member and the second member are bonded to each other.
The bonding surface of the first member with the second member and the bonding surface of the second member with the first member have a first corrugated shape.
The seating surface portion includes a third member located on the buttocks side and a fourth member located on the opposite side of the buttocks from the third member and harder than the third member.
The third member and the fourth member are bonded to each other.
The bonding surface of the third member with the fourth member and the bonding surface of the fourth member with the third member have a second corrugated shape.
The period of the second waveform shape is shorter than the period of the first waveform shape.
Vehicle seat. 前記背面部の前記背中側の面には、凹凸が形成されている、
請求項１に記載の乗り物用シート。 An uneven surface is formed on the back surface of the back surface.
The vehicle seat according to claim 1. 前記第１波形形状を形成する山部及び谷部は、前記背面部及び前記座面部が並ぶ方向に沿って並設されており、
前記第２波形形状を形成する山部及び谷部は、前記背面部及び前記座面部が並ぶ方向に沿って並設されている、
請求項１又は２に記載の乗り物用シート。 The peaks and valleys forming the first corrugated shape are arranged side by side along the direction in which the back surface and the seat surface are arranged .
The peaks and valleys forming the second corrugated shape are arranged side by side along the direction in which the back surface and the seat surface are arranged .
The vehicle seat according to claim 1 or 2 .
JP2016222477A 2016-11-15 2016-11-15 Vehicle seat Expired - Fee Related JP6788267B2 (en)

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