JP2018019801A - Vehicle seat pad and manufacturing method thereof - Google Patents

Vehicle seat pad and manufacturing method thereof Download PDF

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JP2018019801A
JP2018019801A JP2016151583A JP2016151583A JP2018019801A JP 2018019801 A JP2018019801 A JP 2018019801A JP 2016151583 A JP2016151583 A JP 2016151583A JP 2016151583 A JP2016151583 A JP 2016151583A JP 2018019801 A JP2018019801 A JP 2018019801A
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duct
seat pad
pad
air
air outlet
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JP6732591B2 (en
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高木　幸彦
Yukihiko Takagi
幸彦 高木
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Inoac Corp
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Inoue MTP KK
Inoac Corp
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  • Seats For Vehicles (AREA)
  • Mattresses And Other Support Structures For Chairs And Beds (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle seat pad improving the quality by making recesses made of large depressions and highlight less noticeable in a process of being covered by an upholstery, and retaining comfort by securing a necessary amount of air from respective air outlets.SOLUTION: A vehicle seat pad includes: an air distribution duct 6 including an air introduction port 61a and a plurality of air exhaust ports 64 in duct passages; and a pad body 1 in which a plurality of depressions 21 are formed on a surface 1a in an occupant contact side, where the respective depressions 21 are communicated to the air exhaust ports 64 respectively, and entrances to the depressions 21 are formed into air outlets 20 larger than the air exhaust ports 64, the pad body 1 being foam molded by insert-molding the duct 6. The seat pad further includes plastic-foam breathable paddings 4 having a columnar body, the plastic-foam breathable paddings 4 having removed films, inserted into the respective depressions 21, and being embedded into an area of the air outlets 20, with their side peripheral surfaces 4S brought into contact with side walls 211 of the depressions.SELECTED DRAWING: Figure 5

Description

本発明は、車両用座席シートを構成する車両用シートパッド及びその製造方法に関する。   The present invention relates to a vehicle seat pad constituting a vehicle seat and a method for manufacturing the same.

自動車等に搭載される座席シートの座部や背もたれを構成するダクト入りシートパッドがある。軟質ポリウレタンフォーム等のパッド本体を主構成要素とするが、近年、内部に温度調整された空調エアの配風通路を形成し、着座する乗員に該空調エアを送って快適性を高めた発明がいくつか提案されている（例えば特許文献１）。   There is a seat pad with a duct that constitutes a seat portion and a backrest of a seat seat mounted on an automobile or the like. Although the main component is a pad body such as a flexible polyurethane foam, in recent years, an air distribution passage for air-conditioning air whose temperature has been adjusted is formed inside, and the invention has been improved by sending the air-conditioning air to a seated passenger Some have been proposed (for example, Patent Document 1).

特開２０１２−８１１６１号公報JP 2012-81161 A

特許文献１の発明は、配風通路を剛性のある樹脂製配風用ダクトが形成されている。そのため、体重の重い乗員が座っても、配風通路が押し潰されるようなことはない。しかし、図７のように、シートパッドの発泡成形時に、発泡成形型の隆起部８２でダクト６のエア噴出口６４を塞ぐ状態にして、ダクト６と一体発泡成形するので、パッド本体表面１ａには隆起部８２がつくる大きな窪み２１ができてしまう(図１０)。剛性ダクト６でつくるエア噴出口６４は、パッド本体表面１ａから奥まった箇所に配置する必要があり、シールテープで塞ぐことができず、前記隆起部８２に頼らざるを得ない。発泡成形を終えたダクト入りパッド本体には、エア噴出口よりも一回り大きな空気吹出口を有する窪み２１ができ、その状態のまま、表皮９を被せてシートクッションやシートバックにすると、凹み９０ができて支障をきたす虞がある(図１０)。表皮９を被せたシートクッションの表面を見ると、空気吹出口の形状が浮き出てしまう。表皮９は強く引っ張って被せるため、空気吹出口の外周縁にできるハイライトＨＴが時に目立ち、品質上の問題になる。   In the invention of Patent Document 1, a rigid resin distribution duct is formed in the distribution path. Therefore, even if a heavy passenger sits down, the air distribution passage is not crushed. However, as shown in FIG. 7, when the seat pad is foam-molded, the air jet port 64 of the duct 6 is closed with the raised portion 82 of the foam-molding die, and the foam is integrally foam-molded with the duct 6. Will create a large depression 21 created by the raised portion 82 (FIG. 10). The air jet port 64 formed by the rigid duct 6 needs to be disposed at a location deep from the pad main body surface 1a, and cannot be closed with a seal tape, and must be relied on the raised portion 82. In the ducted pad main body after the foam molding, a recess 21 having an air outlet slightly larger than the air outlet is formed. May cause trouble (FIG. 10). When the surface of the seat cushion covered with the skin 9 is seen, the shape of the air outlet will be raised. Since the skin 9 is pulled strongly, the highlight HT formed on the outer peripheral edge of the air outlet is sometimes conspicuous, resulting in a quality problem.

本発明は、上記問題点を解決するもので、表皮を被せた段階で、大きな窪みがつくる凹みやハイライトを目立たなくして品質向上を図り、且つ各空気吹出口からの必要エア量を確保して快適性を維持する車両用シートパッド及びその製造方法を提供することを目的とする。   The present invention solves the above-mentioned problems, and at the stage of covering the skin, the dents and highlights created by the large dents are made inconspicuous to improve the quality, and the necessary amount of air from each air outlet is secured. An object of the present invention is to provide a vehicle seat pad that maintains comfort and a method for manufacturing the same.

上記目的を達成すべく、請求項１に記載の発明の要旨は、エア導入口が設けられると共にダクト経路にエア噴出口が複数設けられた配風用ダクトと、乗員当接側の表面に窪みが複数形成され、各窪みが前記エア噴出口に夫々連通し、該窪みへのはいり口を前記エア噴出口よりも大きな空気吹出口にして、且つ前記ダクトをインサート品にして発泡成形されているパッド本体と、を具備する車両用シートパッドであって、柱状体にして、前記各窪み内に嵌入され且つ該窪みの側壁に側周面を当接させるようにして、前記空気吹出口の領域まで埋められている除膜処理済みプラスチックフォーム製の通気性詰め体を、さらに具備することを特徴とする車両用シートパッドにある。請求項２の発明たる車両用シートパッドは、請求項１で、ダクトにダクト部から分岐し、先端筒口が前記エア噴出口になる短筒部と、該短筒部の先端から突出させた状態にして、該短筒部の外周面に巻き付けられたウレタンスラブの帯状片と、をさらに具備することを特徴とする。請求項３の発明たる車両用シートパッドは、請求項１又は２で、空気吹出口から前記窪みの底面へと向かう途中に、大孔径部から小孔径部へと変わる段差面が形成され、且つ該段差面に前記詰め体が載ることを特徴とする。請求項４の発明たる車両用シートパッドは、請求項３で、段差面に載る前記詰め体を、前記大孔径部の大きさに合わせて該段差面に載る筒部と、該筒部内に挿着され該筒部よりも目の粗い柱状部とを備えた筒部付き柱状体とし、該柱状部の下端面側を前記筒部よりも下方へ突出させ、該柱状部の下端面を前記帯状片に当接させたことを特徴とする。請求項５の発明たる車両用シートパッドは、請求項１〜４で、詰め体が、前記空気吹出口の領域で、その周縁から中央に向けてなだらかに盛り上がって、前記窪み内に埋められていることを特徴とする。
請求項６に記載の発明の要旨は、エア導入口が設けられると共にダクト経路にエア噴出口が複数設けられた配風用ダクトを、発泡成形型にセットし、該発泡成形型の隆起部で該エア噴出口を塞いで型閉じをし、その後、前記隆起部で各窪みを形成すると共にその窪みへのはいり口である空気吹出口が前記エア噴出口よりも大きくなるパッド本体を、前記ダクトを埋設して一体発泡成形した車両用シートパッドの製造方法であって、前記ダクトを埋設して前記パッド本体を一体発泡成形し、脱型後、さらに、柱状体にして、除膜処理済みプラスチックフォーム製の通気性詰め体を、その側周面が前記窪みの側壁に当接するようにして各窪み内へ嵌入させ、前記空気吹出口の領域まで埋めたことを特徴とする車両用シートパッドの製造方法にある。請求項７の発明たる車両用シートパッドの製造方法は、請求項６で、ダクトが、ダクト部から上向き分岐し、先端筒口を前記エア噴出口とする短筒部を備えて、ウレタンスラブの帯状片を、該短筒部の先端から突出させた状態にして該短筒部の外周面に巻き付けた後、該帯状片付きダクトを前記発泡成形型にセットし、該帯状片付きダクトを埋設して前記パッド本体を一体発泡成形したことを特徴とする。請求項８の発明たる車両用シートパッドの製造方法は、請求項６又は７で、隆起部が先端に向かう高さ方向で、大孔径部用隆起部から断面径が一回り小さくなる小孔径部用隆起部を形成し、該小孔径部用隆起部で前記エア噴出口を塞ぎ、脱型後、パッド本体の大孔径部から小孔径部へと変わる前記窪みの段差面に前記詰め体を載せたことを特徴とする。請求項９の発明たる車両用シートパッドの製造方法は、請求項８で、段差面に載る前記詰め体を、前記大孔径部の大きさを合わせて該段差面に載る筒部と、該筒部内に挿着され該筒部よりも目の粗い柱状部とを備えた筒部付き柱状体とし、該柱状部の下端面側を前記筒部よりも下方へ突出させ、前記詰め体の前記窪み内への嵌入で、該柱状部の下端面を前記帯状片に当接させたことを特徴とする。 In order to achieve the above object, the gist of the invention described in claim 1 is that a duct for air distribution in which an air introduction port is provided and a plurality of air outlets are provided in the duct path, and a depression on the surface on the passenger contact side are provided. Are formed, and each recess communicates with the air jet port, and a foam port is formed by using the inlet to the recess as an air outlet larger than the air jet port and the duct as an insert. A vehicle seat pad comprising a pad main body, a columnar body, fitted in each of the recesses, and having a side surface abutting against a side wall of the recess, and the region of the air outlet The vehicle seat pad further comprises a breathable stuffer made of a film-removed plastic foam that is filled up to the end. A vehicle seat pad according to a second aspect of the present invention is the vehicle seat pad according to the first aspect, wherein the duct is branched from the duct portion, and the front end of the short cylindrical portion becomes the air outlet, and is projected from the front end of the short cylindrical portion. And a strip of urethane slab wound around the outer peripheral surface of the short cylindrical portion. A vehicle seat pad according to a third aspect of the present invention is the vehicle seat pad according to the first or second aspect, wherein a stepped surface that changes from a large hole diameter portion to a small hole diameter portion is formed on the way from the air outlet to the bottom surface of the recess. The padding is placed on the step surface. A vehicle seat pad according to a fourth aspect of the present invention is the vehicle seat pad according to the third aspect, wherein the stuffed body placed on the stepped surface is inserted into the cylindrical portion and the cylindrical portion placed on the stepped surface according to the size of the large hole diameter portion. A columnar body with a cylindrical portion that is attached and has a columnar portion that is coarser than the cylindrical portion, the lower end surface side of the columnar portion protrudes downward from the cylindrical portion, and the lower end surface of the columnar portion is the band-shaped It is made to contact | abut to the piece. A vehicle seat pad according to a fifth aspect of the present invention is the vehicle seat pad according to the first to fourth aspects, wherein the stuffing body gently rises from the periphery to the center in the region of the air outlet and is buried in the recess. It is characterized by being.
The gist of the invention described in claim 6 is that an air distribution duct provided with an air inlet and a plurality of air outlets in a duct path is set in a foam mold, and the raised portion of the foam mold is The air jet outlet is closed and the mold is closed, and then each pad is formed with the depressions formed in the raised portions, and the air outlet serving as an entrance to the depression is larger than the air jet outlet. A vehicle seat pad manufacturing method in which a foam is embedded and the duct body is embedded and the pad main body is integrally foam-molded. A vehicular seat pad characterized in that a foam breathable stuffing body is fitted into each depression so that a side peripheral surface thereof is in contact with a side wall of the depression and is filled up to the area of the air outlet. In the manufacturing method According to a seventh aspect of the present invention, there is provided a vehicle seat pad manufacturing method according to the sixth aspect, wherein the duct is provided with a short cylindrical portion that branches upward from the duct portion and has a front end cylindrical port as the air outlet, and is formed in a band shape of urethane slab. After the piece is protruded from the tip of the short cylindrical portion and wound around the outer peripheral surface of the short cylindrical portion, the strip with the strip is set on the foaming mold, and the duct with the strip is embedded to The pad main body is integrally foam-molded. The method for manufacturing a vehicle seat pad according to an eighth aspect of the present invention is the method for manufacturing a vehicle seat pad according to the sixth or seventh aspect, wherein the small-diameter portion has a cross-sectional diameter that is slightly reduced from the large-hole-diameter ridge in the height direction toward the tip. Forming a raised portion for sealing, closing the air outlet with the raised portion for the small hole diameter portion, and after demolding, placing the padding on the stepped surface of the recess that changes from the large hole diameter portion to the small hole diameter portion of the pad main body. It is characterized by that. According to a ninth aspect of the present invention, there is provided a method for manufacturing a vehicle seat pad according to the eighth aspect of the present invention, wherein the stuffed body placed on the stepped surface is a cylindrical portion that is placed on the stepped surface with the large hole diameter portion matched. A columnar body with a cylindrical portion that is inserted into the portion and has a columnar portion that is coarser than the cylindrical portion, the lower end surface of the columnar portion protrudes downward from the cylindrical portion, and the depression of the stuffing body The lower end surface of the columnar part is brought into contact with the strip-shaped piece by fitting into the inside.

本発明の車両用シートパッド及びその製造方法は、表皮を被せてシートクッションやシートバックにした車両設置時に、各空気吹出口から吹き出す必要エア量を確保しながら、大きな空気吹出口を有する窪みがつくる凹みやハイライトを消して品質向上に貢献でき優れた効果を発揮する。   The vehicle seat pad and the manufacturing method thereof according to the present invention have a recess having a large air outlet while securing a necessary amount of air to be blown out from each air outlet when the vehicle is installed with a seat cushion and a seat back. It eliminates the dents and highlights that are created and contributes to quality improvement, and exhibits excellent effects.

本発明に係る車両用シートパッドの一形態で、その概略斜視図である。1 is a schematic perspective view of a vehicle seat pad according to the present invention. 図１の分解平面図である。FIG. 2 is an exploded plan view of FIG. 1. 図２に係るダクトの平面図である。FIG. 3 is a plan view of the duct according to FIG. 2. 図３のIV-IV線矢視図である。It is the IV-IV arrow line view of FIG. 図１のV-V線矢視図である。It is the VV line arrow directional view of FIG. 図５の部分拡大図である。It is the elements on larger scale of FIG. 型開状態で発泡成形型に発泡原料を注入している説明断面図である。It is explanatory sectional drawing which has inject | poured the foaming raw material into the foaming mold in the mold open state. 図７の後、型閉じし、発泡成形に向かう発泡成形型の説明断面図である。FIG. 8 is an explanatory cross-sectional view of the foaming mold that is closed after FIG. 7 and heads for foam molding. 図８の後、脱型したダクト入りパッド本体の対応部位に詰め体を配した説明断面図である。FIG. 9 is an explanatory cross-sectional view in which a padding body is disposed at a corresponding portion of the duct-equipped pad main body after the removal of FIG. 8. 詰め体がない場合の対比図である。It is a comparison figure when there is no filling body. 他態様の車両用シートパッドの断面図である。It is sectional drawing of the vehicle seat pad of another aspect. 図１１の部分拡大図である。It is the elements on larger scale of FIG. 第一別態様のシートパッドの製造方法で、下型にダクトをセットした部分断面図である。It is the fragmentary sectional view which set the duct to the lower mold | type with the manufacturing method of the seat pad of the 1st another aspect. 第一別態様のシートパッドの製造方法で、図６に対応する部分拡大図である。It is the elements on larger scale corresponding to FIG. 6 with the manufacturing method of the seat pad of a 1st another aspect. 第二別態様のシートパッドの製造方法で、下型に帯状片付きダクトをセットする部分断面図である。It is a fragmentary sectional view which sets a duct with a strip piece to a lower model with a manufacturing method of a seat pad of the 2nd another mode. 第二別態様のシートパッドの製造方法で、図６に対応する部分拡大図である。It is the elements on larger scale corresponding to FIG. 6 with the manufacturing method of the seat pad of a 2nd another aspect. 第三別態様のシートパッドの製造方法で、(イ）が詰め体の斜視図、（ロ）が図６に対応する部分拡大図である。FIG. 7 is a perspective view of a stuffing body, and (b) is a partially enlarged view corresponding to FIG. 第四別態様のシートパッドの製造方法で、図１４に対応する説明断面図である。FIG. 15 is an explanatory cross-sectional view corresponding to FIG. 14 in the fourth method of manufacturing a seat pad.

以下、本発明に係る車両用シートパッド及びその製造方法について詳述する。図１〜図１８は本発明の車両用シートパッド（以下、単に「シートパッド」ともいう。）及びその製造方法の一形態で、図１はシートパッドの概略斜視図、図２は図１の分解平面図、図３は図２に係るダクトの平面図、図４は図３のIV-IV線矢視図、図５は図１のV-V線矢視図、図６は図５の部分拡大図、図７は型開状態で発泡成形型に発泡原料を注入している説明断面図、図８は図７の後、型閉じの説明断面図、図９は図８の後、脱型したダクト入りパッド本体の窪み部位に詰め体を配した説明断面図、図１０は詰め体がない場合の比較図、図１１は他態様の車両用シートパッドの断面図、図１２は図１１の部分拡大図、図１３〜図１８は図６又は図１２に代わる別態様図である。尚、図面を判り易くするため、パッド本体１やダクト６を簡略図示し、図５,図８,図１１では裏当て材Ｒの図示を省く。   Hereinafter, the vehicle seat pad and the manufacturing method thereof according to the present invention will be described in detail. 1 to 18 show one embodiment of a vehicle seat pad (hereinafter also simply referred to as “seat pad”) and a method of manufacturing the same according to the present invention. FIG. 1 is a schematic perspective view of the seat pad, and FIG. 3 is a plan view of the duct according to FIG. 2, FIG. 4 is a view taken along the line IV-IV in FIG. 3, FIG. 5 is a view taken along the line VV in FIG. 1, and FIG. 7 is an explanatory cross-sectional view in which a foaming raw material is injected into the foam molding die in the mold open state, FIG. 8 is an explanatory cross-sectional view of the mold closing after FIG. 7, and FIG. 9 is demolded after FIG. FIG. 10 is a comparative view in the case where no padding is provided, FIG. 11 is a cross-sectional view of another embodiment of the vehicle seat pad, and FIG. 12 is a portion of FIG. Enlarged views and FIGS. 13 to 18 are different views instead of FIG. 6 or FIG. In order to make the drawings easy to understand, the pad main body 1 and the duct 6 are simply illustrated, and the backing material R is not illustrated in FIGS. 5, 8, and 11.

（１）車両用シートパッドの製造方法
シートパッドの製造方法は、まずエア導入口６１ａとエア噴出口６４が設けられた配風用ダクト６を、発泡成形型８にセットし、次に、型閉じして隆起部８２でエア噴出口６４を塞ぐ。その後、パッド本体表面１ａに形成される窪み口（はいり口）が空気吹出口２０となる窪み２１を備えるパッド本体１をダクト６と一体発泡成形し、脱型後、詰め体４を各窪み２１内へ嵌入させて空気吹出口２０の領域まで埋めたシートパッドを造る製法である(図１〜図９)。ここでは、車両用座席シートの座部向けクッションパッドに適用する。発泡成形に先立ち、ダクト６,詰め体４,発泡成形型８が用意される。 (1) Manufacturing method of vehicle seat pad The manufacturing method of the seat pad is as follows. First, the air distribution duct 6 provided with the air inlet 61a and the air outlet 64 is set in the foaming mold 8, and then the mold The air outlet 64 is closed by closing the raised portion 82. Then, the pad main body 1 provided with the hollow 21 in which the hollow opening (hole opening) formed in the pad main body surface 1a becomes the air outlet 20 is integrally foamed with the duct 6, and after demolding, the padding body 4 is placed in each hollow 21. This is a manufacturing method for making a seat pad that is inserted into the air blower outlet 20 and embedded therein (FIGS. 1 to 9). Here, the present invention is applied to a cushion pad for a seat portion of a vehicle seat. Prior to foam molding, a duct 6, a stuffing 4 and a foam mold 8 are prepared.

ダクト６は、ポリプロピレン樹脂等からなる樹脂製管状部材にして、エア導入口６１ａが設けられると共にダクト経路にエア噴出口６４が複数設けられた配風用ダクトである。本実施形態は図３,図４のような基部６Ｋから外方にダクト部６Ｄが延びるブロー成形ダクト６とする。平面視中央に配される基部６Ｋの胴体相当部分から人の形に見えるその頭相当部分と手足相当部分のダクト部６Ｄが水平方向に延び、表面側にエア噴出口６４が形成される一方、裏面側にエア導入口６１ａが形成された配風用ダクト６になっている。本発明の「表面側」とは乗員が座部に腰掛ける時に当接する面の側をいい、「水平方向」とはその表面の面方向をいう。
ここでの基部６Ｋは平面視ほぼ方形に形成される。基部６Ｋに係る表面側と裏面側の略全域を平らな面の平坦部分６３Ｋにして流路６０が形成される扁平中空部とする。ダクト部６Ｄは、ダクト表面６ａ側やダクト裏面６ｂ側の平坦部分６３Ｄと、断面弧状のダクト側壁部分６２Ｄとで、断面形状が図４ごとくの扁平オーバル状にする。図３は紙面上方が車両後方側になるが、車両後方側へ膨出するダクト６の前記頭相当部分で、裏面６ｂ側に短筒状のエア導入部６１が突出する。エア導入部６１の筒口がエア導入口６１ａになる。ダクト部６Ｄ及び基部６Ｋのダクト表面６ａ側には、短管部からなるエア噴出口６４用のノズル部６Ｎが複数立設する。各ノズル部６Ｎは離間配設される。 The duct 6 is a resin-made tubular member made of polypropylene resin or the like, and is an air distribution duct provided with an air introduction port 61a and a plurality of air outlets 64 in the duct path. In this embodiment, a blow-molded duct 6 having a duct portion 6D extending outward from the base portion 6K as shown in FIGS. While the body-corresponding portion of the base 6K arranged in the center in plan view, the head-corresponding portion that looks like a person and the duct portion 6D corresponding to the limbs extend in the horizontal direction, and the air outlet 64 is formed on the surface side, The air distribution duct 6 has an air inlet 61a formed on the back side. The “surface side” of the present invention refers to the side of the surface that comes into contact when the occupant sits on the seat, and “horizontal direction” refers to the surface direction of the surface.
Here, the base 6K is formed in a substantially square shape in plan view. A flat hollow portion in which the flow path 60 is formed is formed by making a substantially flat portion 63K of a flat surface over substantially the entire surface side and back surface side of the base portion 6K. The duct portion 6D has a flat portion 63D on the duct surface 6a side and the duct back surface 6b side, and a duct side wall portion 62D having a cross-sectional arc shape, and the cross-sectional shape is a flat oval shape as shown in FIG. In FIG. 3, the upper side of the page is the rear side of the vehicle, but a short cylindrical air introduction portion 61 protrudes on the back surface 6 b side in the portion corresponding to the head of the duct 6 bulging toward the rear side of the vehicle. The cylinder port of the air introduction part 61 becomes the air introduction port 61a. On the duct surface 6a side of the duct portion 6D and the base portion 6K, a plurality of nozzle portions 6N for the air outlets 64, which are short pipe portions, are erected. Each nozzle part 6N is spaced apart.

詰め体４は、除膜処理済みプラスチックフォーム製の通気性柱状体である。詰め体４は、その側周面４Ｓがパッド本体１の窪み側壁２１１に当接するようにして各窪み２１内へ嵌入させることにより、空気吹出口２０の領域まで埋められる大きさになっている(図６)。除膜処理によってセル膜が殆ど除去され、隣接するセル内空間が大きな開口部を介して導通し、ほぼ三次元網状骨格だけが残る除膜処理済みプラスチックフォーム製の詰め体４である。詰め体４はその構造から通気性に断然優れる。該詰め体４を窪み２１内に埋めても、通気抵抗が小さく、ダクト６の通風に支障をきたさない。気孔連続化処理とも呼ばれる「除膜処理」には、例えばアルカリ処理法、湿潤加熱法、さらに爆発法等があるが、セル膜を除去できればよく、その処理法を問わない。
本実施形態は、除膜処理によってセル膜の大半が除去された除膜処理済みポリウレタンフォーム製の詰め体４とする。柔軟性,クッション性に富み、且つ優れた保形性を有し、シートパッドの窪み２１を埋める詰め体４として打ってつけとなっている。セル数が8個／25mm〜13個／25mmであるシート状ポリウレタン成形体の加工品を採用しており、詰め体４の通気抵抗が極めて小さく、窪み２１内に詰め体４を嵌入,保持させても、エア導入口６１ａからダクト６を介して空気吹出口２０外へと向かう通風が良好に維持される。一方、窪み２１内が詰め体４で埋め尽された状態になり、シートパッド完成後、表皮９を被せることによって窪み２１にできていたハイライトＨＴは消失する。
詰め体４の外形は図２(ロ),図６のごとく窪み２１に合わせた円柱状である。空気吹出口２０の径に合わせた直径Ｄ１とし、各窪み２１内に嵌入している。 The stuffing body 4 is a gas-permeable columnar body made of a plastic foam after film removal. The stuffing body 4 is sized to be filled up to the area of the air outlet 20 by being fitted into the respective depressions 21 so that the side peripheral surface 4S thereof is in contact with the depression side walls 211 of the pad body 1 ( (Fig. 6). The cell membrane is almost removed by the film removal treatment, the adjacent cell internal space is conducted through a large opening, and only the film removal-treated plastic foam stuffing 4 is left in which only a three-dimensional network skeleton remains. The stuffing body 4 is by far superior in breathability due to its structure. Even if the stuffing body 4 is buried in the recess 21, the ventilation resistance is small and the ventilation of the duct 6 is not hindered. Examples of the “film removal treatment” also referred to as pore continuation treatment include an alkali treatment method, a wet heating method, an explosion method, and the like, and any treatment method may be used as long as the cell membrane can be removed.
In the present embodiment, the polyurethane foam stuffed body 4 is made of a film-removed polyurethane film from which most of the cell film has been removed by the film-removing process. It has excellent flexibility and cushioning properties, and has excellent shape retention, and is struck as a stuffing 4 that fills the recess 21 of the seat pad. A processed product of sheet-like polyurethane molded body with 8 cells / 25 mm to 13 cells / 25 mm is used, and the airflow resistance of the stuffing body 4 is extremely small, and the stuffing body 4 is inserted and held in the recess 21. However, the ventilation from the air inlet 61a to the outside of the air outlet 20 through the duct 6 is maintained well. On the other hand, the interior of the recess 21 is filled with the stuffing body 4, and after the seat pad is completed, the highlight HT formed in the recess 21 disappears by covering the skin 9.
The outer shape of the stuffing body 4 is a cylindrical shape matched with the depression 21 as shown in FIGS. It is set as the diameter D1 matched with the diameter of the air blower outlet 20, and is inserted in each hollow 21.

発泡成形型８は、図７ごとくの分割型で、下型８ａと上型８ｂとを備える。下型８ａと上型８ｂは図示しないヒンジにより開閉可能に接続されている。ヒンジを支点にして図８のごとく型閉じすると、下型キャビティ面８１と上型キャビティ面８６とで、シートパッドのキャビティＣをつくる。本製法では、下型キャビティ面８１でパッド本体表面１ａ側が成形され、上型キャビティ面８６でパッド本体裏面１ｂ側が成形される。
下型８ａのキャビティ面８１には、メイン部２の上半部用キャビティ面を中央にして、その両脇にサイド部３の上半部用キャビティ面が形成される。そして、下型８ａにはメイン部２用キャビティ面の各所を柱状に隆起させ、エア噴出口６４の口を塞ぎ、且つパッド本体表面１ａに空気吹出口２０をつくる窪み２１形成用の隆起部８２が設けられる。各隆起部８２が窪み２１の形成を担い、さらにその上部がエア噴出口６４を封止する役目を担う。各隆起部８２の上端面から円柱形の穴８２ａが掘られている。下型８ａへのダクト６のセット及び型閉じで、該穴８２ａに前記ノズル部６Ｎが収納され、隆起部８２の上端筒状周縁が、ダクト表面６ａで且つノズル部６Ｎの基端外周縁傍のダクト表面６ａに当接して、エア噴出口６４の口が塞がれる。 The foaming mold 8 is a split mold as shown in FIG. 7, and includes a lower mold 8a and an upper mold 8b. The lower mold 8a and the upper mold 8b are connected to each other by a hinge (not shown) so as to be opened and closed. When the mold is closed as shown in FIG. 8 using the hinge as a fulcrum, the lower mold cavity surface 81 and the upper mold cavity surface 86 form a cavity C of the seat pad. In this manufacturing method, the pad main body surface 1 a side is formed by the lower mold cavity surface 81, and the pad main body rear surface 1 b side is formed by the upper mold cavity surface 86.
On the cavity surface 81 of the lower mold 8a, the cavity surface for the upper half part of the main part 2 is centered, and the cavity surface for the upper half part of the side part 3 is formed on both sides thereof. The lower mold 8a is raised in a columnar shape on the cavity surface for the main portion 2 to block the mouth of the air outlet 64, and the raised portion 82 for forming the depression 21 that forms the air outlet 20 on the pad main body surface 1a. Is provided. Each raised portion 82 is responsible for forming the recess 21, and further its upper portion serves to seal the air jet 64. A cylindrical hole 82 a is dug from the upper end surface of each raised portion 82. When the duct 6 is set to the lower die 8a and the die is closed, the nozzle portion 6N is accommodated in the hole 82a, and the upper cylindrical peripheral edge of the raised portion 82 is the duct surface 6a and the proximal outer peripheral edge of the nozzle portion 6N. In contact with the duct surface 6a, the mouth of the air outlet 64 is closed.

本実施形態は、さらに浸透阻止材Ｚと裏当て材Ｒを備える。浸透阻止材Ｚは、独立気泡性発泡プラスチックのシート材を有して、一方の面をダクト裏面６ｂに当接させるシート状のクッション性部材である(図５,図６)。詳しくは、シート材をオレフィン系の独立気泡性発泡プラスチックにして、該シート材の片面又は両面に、難燃性不織布が貼着された状態又は難燃性接着剤を塗布した状態の複合シート材とする。裏当て材Ｒは、不織布で構成され、パッド本体裏面１ｂの略全域を覆う大きさを有している。   The present embodiment further includes a penetration preventing material Z and a backing material R. The permeation prevention material Z is a sheet-like cushioning member having a sheet material of closed cell foamed plastic and having one surface in contact with the duct back surface 6b (FIGS. 5 and 6). Specifically, the sheet material is an olefin-based closed-cell foamed plastic, and a composite sheet material in a state where a flame-retardant nonwoven fabric is adhered to one or both surfaces of the sheet material or a flame-retardant adhesive is applied. And The backing material R is made of non-woven fabric and has a size covering substantially the entire area of the pad main body back surface 1b.

前記発泡成形型８,ダクト６,詰め体４等を用いて、シートパッドが例えば次のように製造される。
まず、発泡成形型８を図７の型開状態とする。型開状態の下型８ａに、ダクト６をその裏面６ｂ側が上向くようセットする。ダクト６はエア導入口６１ａをシールテープＳＴで塞ぐ前処理がなされている。各ノズル部６Ｎを下方側に向けて隆起部８２の穴８２ａ内に収容し、ダクト表面６ａ側で且つノズル部６Ｎの基端外周縁域６６(図１０参照)に、隆起部８２の上端筒状周縁を当接させて、ダクト６を下型８ａにセットする(図７)。ダクト６は、ほぼ同一平面上に形成された基部６Ｋ,ダクト部６Ｄが水平に配され、起立するノズル部６Ｎを穴８２ａに納めて、エア噴出口６４が塞がれる。
ダクト６のセットと相前後して、上型８ｂに裏当て材Ｒと浸透阻止材Ｚとをセットする。裏当て材Ｒにタグピン等で浸透阻止材Ｚを予め取付けた浸透阻止材Ｚ付き裏当て材Ｒが上型キャビティ面８６にセットされる。型閉じで、浸透阻止材Ｚがダクト裏面６ｂに載るよう裏当て材Ｒに取付けられる。 Using the foaming mold 8, the duct 6, the filling body 4 and the like, a seat pad is manufactured as follows, for example.
First, the foaming mold 8 is set in the mold open state of FIG. The duct 6 is set on the lower mold 8a in the mold open state so that the back surface 6b side faces upward. The duct 6 is pretreated so as to close the air inlet 61a with the seal tape ST. Each nozzle portion 6N is accommodated in the hole 82a of the raised portion 82 facing downward, and the upper end cylinder of the raised portion 82 is located on the duct surface 6a side and in the proximal outer peripheral edge region 66 (see FIG. 10) of the nozzle portion 6N. The duct 6 is set on the lower mold 8a by bringing the peripheral edge into contact (FIG. 7). In the duct 6, a base portion 6K and a duct portion 6D that are formed on substantially the same plane are horizontally arranged, and the nozzle portion 6N that stands up is placed in the hole 82a, and the air outlet 64 is closed.
At the same time as the setting of the duct 6, the backing material R and the permeation prevention material Z are set on the upper mold 8b. The backing material R with the penetration preventing material Z in which the penetration preventing material Z is previously attached to the backing material R with a tag pin or the like is set on the upper mold cavity surface 86. With the mold closed, the permeation prevention material Z is attached to the backing material R so as to be placed on the duct back surface 6b.

次に、型開状態のまま、下型キャビティ面８１上に注入ホースＮＬ等を使用してパッド本体１成形用ウレタン発泡原液等の発泡原料ｇを所定量注入する(図７)。続いて、上型８ｂを作動させ型閉じする(図８)。上型８ｂと下型８ａとの型閉じで、ダクト６,浸透阻止材Ｚ付き裏当て材Ｒがインサートセットされたパッド本体１用キャビティＣができ、浸透阻止材Ｚがダクト裏面６ｂに載る。浸透阻止材Ｚがダクト裏面６ｂ側の平坦部分６３に圧縮状態で当接する。この圧縮状態によって隆起部８２がエア噴出口６４をより確実に塞ぐ。浸透阻止材Ｚのシート材が独立気泡性発泡プラスチックからなるため、発泡原料ｇの注入時にダクト裏面６ｂへ誤って載った発泡原料ｇの裏当て材Ｒ側への浸透を阻止する。   Next, a predetermined amount of a foaming raw material g such as a urethane foam stock solution for forming the pad main body 1 is injected onto the lower mold cavity surface 81 while the mold is open (FIG. 7). Subsequently, the upper die 8b is operated to close the die (FIG. 8). By closing the upper die 8b and the lower die 8a, a cavity C for the pad body 1 in which the duct 6 and the backing material R with the penetration preventing material Z are set is formed, and the penetration preventing material Z is placed on the duct back surface 6b. The permeation preventive material Z contacts the flat portion 63 on the duct back surface 6b side in a compressed state. Due to this compressed state, the raised portion 82 more reliably blocks the air outlet 64. Since the sheet material of the permeation preventing material Z is made of closed cell foamed plastic, the permeation of the foaming raw material g erroneously placed on the duct back surface 6b when the foaming raw material g is injected into the backing material R side is prevented.

前記型閉じの後、パッド本体１の発泡成形に移る。図８の型閉じ状態を所定時間維持し、ダクト６,浸透阻止材Ｚ,裏当て材Ｒが一体化されるダクト６入りパッド本体１を発泡成形する。隆起部８２で各窪み２１を形成しそのはいり口が空気吹出口２０になるパッド本体１を、ダクト６を埋設して一体発泡成形する。パッド本体１の発泡成形で、裏当て材Ｒがダクト６上の浸透阻止材Ｚを覆ってパッド本体裏面１ｂに被着一体化する。パッド本体１が成形されると、隆起部８２が乗員当接側のパッド本体表面１ａに窪み２１を形成し、該窪み２１のパッド本体表面１ａ側にエア噴出口６４と連通する空気吹出口２０ができる(図９)。空気吹出口２０は、図７のごとく隆起部８２の上端筒状周縁がノズル部６Ｎの基端外周縁付近のダクト表面６ａに当接してエア噴出口６４を塞ぐことから、エア噴出口６４よりも大きくなっている。
パッド本体１の発泡成形を終え、脱型すれば、図１０の表皮９がないダクト６入りパッド本体１が得られる。該ダクト６入りパッド本体１には浸透阻止材Ｚ,裏当て材Ｒが一体化している。 After the mold closing, the process proceeds to foam molding of the pad body 1. The mold closed state of FIG. 8 is maintained for a predetermined time, and the duct body 6 containing the duct 6 in which the duct 6, the penetration preventing material Z, and the backing material R are integrated is foam-molded. The pad main body 1 in which each depression 21 is formed by the raised portion 82 and the opening becomes the air outlet 20 is formed by integral foaming with the duct 6 embedded therein. In the foam molding of the pad main body 1, the backing material R covers the penetration preventing material Z on the duct 6 and is integrally attached to the pad main body back surface 1b. When the pad main body 1 is molded, the raised portion 82 forms a recess 21 on the pad main body surface 1a on the passenger contact side, and the air outlet 20 communicates with the air outlet 64 on the pad main body surface 1a side of the recess 21. (Fig. 9). As shown in FIG. 7, the air outlet 20 closes the air outlet 64 by the upper cylindrical peripheral edge of the raised portion 82 abutting against the duct surface 6 a in the vicinity of the outer peripheral edge of the nozzle 6 </ b> N. Is also getting bigger.
When the foam molding of the pad main body 1 is finished and removed, the pad main body 1 with the duct 6 without the skin 9 of FIG. 10 is obtained. A permeation preventing material Z and a backing material R are integrated with the pad main body 1 containing the duct 6.

本発明は、脱型後に、さらに、柱状体にして、除膜処理済みプラスチックフォーム製の前記詰め体４を、その側周面４Ｓが窪み２１の側壁２１１に当接するようにして各窪み２１内へ嵌入させる(図９)。詰め体４を窪み２１内に詰めていく。詰め体４はクッション性に富むため、手で簡単に押し縮めて窪み２１内へ円滑嵌入できる。そうして、詰め体４が空気吹出口２０の領域まで埋められた所望のシートパッドが完成する。該シートパッドに表皮９を被せれば、車両座席シート向け座部用シートクッションになる(図５)。
尚、各窪み２１の大きさ,形状を同じにしたが、大きさや形状を変えてもよい。符号２Ｄはパッド本体１の傾斜部、符号２Ｅはバックシートとの当たり面部を示す。符号８１ａ,符号８６ａは型合せ面、符号８６１は型閉じ時にエア導入部６１を収納する上型凹所、符号８８は吊溝１１を形成する凸部、符号８８ａは縦溝１１ａ用を示す。 In the present invention, after demolding, the stuffed body 4 made of a plastic foam having been subjected to film removal treatment is further formed into a columnar body, and the inside surface of each dent 21 is arranged such that the side peripheral surface 4S abuts against the side wall 211 of the dent 21. (Fig. 9). The filling body 4 is packed in the recess 21. Since the stuffing body 4 is rich in cushioning properties, it can be easily pushed and shrunk by hand and smoothly inserted into the recess 21. Thus, a desired seat pad in which the filling body 4 is filled up to the area of the air outlet 20 is completed. By covering the seat pad with the skin 9, a seat cushion for a vehicle seat is obtained (FIG. 5).
In addition, although the magnitude | size and shape of each hollow 21 were made the same, you may change a magnitude | size and a shape. Reference numeral 2D denotes an inclined portion of the pad body 1, and reference numeral 2E denotes a contact surface portion with the back sheet. Reference numeral 81a and reference numeral 86a are mold matching surfaces, reference numeral 861 is an upper mold recess for accommodating the air introduction part 61 when the mold is closed, reference numeral 88 is a convex part forming the hanging groove 11, and reference numeral 88a is for the longitudinal groove 11a.

図１１,図１２に他態様のシートパッドの製法で、図５,図６に対応する断面図を示す。図９の各窪み２１内への詰め体４の嵌入と相前後して、ダクト６入りパッド本体１の表面１ａに置きスラブ７を接着させる一工程を加えたシートパッドを造る。
置きスラブ７は、密度がパッド本体１の密度よりも小さく、且つ硬度が該パッド本体１の硬度よりも低い連続気泡フォームのウレタンスラブの板状片で、パッド本体１に係るメイン部２の表面に接着される。置きスラブ７には、パッド本体１の各空気吹出口２０の対応部位に、該空気吹出口２０と略同径の穿設孔が形成される。ここでのパッド本体１はメイン部２が縦溝１１ａ,横溝１１ｂによって四分割されている。置きスラブ７の中央部分７Ａ、両側方部分７Ｂ、後方部分に分割し、メイン部２の座部中央部２Ａ、座部両側方部２Ｂ、座部後方部２Ｃに夫々対応する大きさにする。吊溝１１が残るようにして、これらをパッド本体表面１ａに接着する。置きスラブ７を設ける場合は、穿設孔の出口が文字通りの空気吹出口になるので、詰め体４を各窪み２１内へ嵌入するにあたって、該穿設孔の出口領域まで詰め体４で埋めるようする(図１２)。 FIG. 11 and FIG. 12 show sectional views corresponding to FIG. 5 and FIG. In parallel with the insertion of the padding body 4 into each recess 21 in FIG. 9, a seat pad is prepared by adding one step of placing the slab 7 on the surface 1 a of the pad main body 1 with the duct 6.
The slab 7 is a plate-like piece of urethane slab of open cell foam whose density is lower than the density of the pad body 1 and whose hardness is lower than the hardness of the pad body 1, and the surface of the main part 2 related to the pad body 1. Glued to. In the place slab 7, a hole having a diameter substantially the same as that of the air outlet 20 is formed in a portion corresponding to each air outlet 20 of the pad body 1. Here, the pad main body 1 is divided into four main parts 2 by vertical grooves 11a and horizontal grooves 11b. The slab 7 is divided into a central portion 7A, both side portions 7B, and a rear portion, and has a size corresponding to the seat portion center portion 2A, the seat portion both side portions 2B, and the seat portion rear portion 2C of the main portion 2. These are adhered to the pad body surface 1a so that the hanging grooves 11 remain. In the case where the slab 7 is provided, the outlet of the drilling hole is literally an air outlet, so that when the padding body 4 is inserted into each recess 21, the padding body 4 is filled up to the exit area of the drilling hole. (FIG. 12).

図１３,図１４は第一別態様のシートパッドの製法で、図１３がダクト６を下型８ａにセットした拡大断面図、図１４が図６に対応するシートパッドの拡大断面図を示す。図１〜図９と同様、ダクト部６Ｄから上向き分岐し、先端筒口をエア噴出口６４とする短筒部６Ｎを備えるダクト６を用いる。そして、新たにウレタンスラブの帯状片５を、短筒部６Ｎの先端から突出させた状態にして短筒部６Ｎの外周面６Ｎ１に巻き付けた後、帯状片５付きダクト６を下型８ａにセットする。後は、既述の製法と同様、型閉じにより隆起部８２でエア噴出口６４を塞ぎ、その後、ダクト６を埋設してパッド本体１を一体発泡成形し、脱型後、さらに詰め体４を各窪み２１内に嵌入,保持させたシートパッドを造る。
帯状片５を、短筒部６Ｎの先端６Ｎ２から突出させた状態にして短筒部６Ｎの外周面６Ｎ１に巻き付けることにより、型閉じで、帯状片５が弾性収縮状態で隆起部８２へ当接するので(図１３)、エア噴出口６４がより確実に塞がれる。また、詰め体４を各窪み２１内へ嵌入させた際、詰め体４の下端面４５ｂが図１４のように弾性復元した帯状片５に当接し、剛性のノズル部６Ｎに直接当たらないので、詰め体４の部位も良好なクッション性が保たれる。 FIGS. 13 and 14 show a method of manufacturing a seat pad according to a first embodiment. FIG. 13 is an enlarged sectional view in which the duct 6 is set in the lower mold 8a, and FIG. 14 is an enlarged sectional view of the seat pad corresponding to FIG. Like FIG. 1 to FIG. 9, a duct 6 is used that includes a short cylinder portion 6N that branches upward from the duct portion 6D and has an air outlet 64 as a tip end. And after winding the strip | belt piece 5 of a urethane slab in the state protruded from the front-end | tip of the short cylinder part 6N around the outer peripheral surface 6N1 of the short cylinder part 6N, the duct 6 with the strip | belt piece 5 is set to the lower mold | type 8a. To do. Thereafter, similar to the above-described manufacturing method, the air outlet 64 is closed by the raised portion 82 by closing the mold, and then the duct 6 is embedded to integrally foam the pad main body 1. A seat pad fitted and held in each recess 21 is made.
The band-like piece 5 is in a state of protruding from the tip 6N2 of the short cylinder part 6N and wound around the outer peripheral surface 6N1 of the short cylinder part 6N. Therefore (FIG. 13), the air jet port 64 is more reliably blocked. Further, when the stuffing body 4 is fitted into each recess 21, the lower end surface 45b of the stuffing body 4 comes into contact with the belt-like piece 5 elastically restored as shown in FIG. 14, and does not directly hit the rigid nozzle portion 6N. Good cushioning properties are also maintained in the portion of the filling body 4.

また図１５,図１６に第二別態様のシートパッドの製造方法を示す。大孔径部２１Ｌの先に小孔径部２１Ｓが在る窪み２１をパッド本体１に形成すべく、下型８ａの隆起部８２には大孔径部２１Ｌ用の隆起部８２Ｌの先に小孔径部２１Ｓ用の隆起部８２Ｓが設けられている(図１５)。隆起部８２が先端に向かう高さ方向で、大孔径部用隆起部８２Ｌから断面径が一回り小さくなる小孔径部用隆起部８２Ｓを階段状に形成する。第一別態様と同じく、帯状片５を、短筒部６Ｎの先端から突出させた状態にして短筒部６Ｎの外周面６Ｎ１に巻き付けた後、帯状片５付きダクト６を下型８ａにセットする。次いで、型閉じにより、小孔径部用隆起部８２Ｓでエア噴出口６４を塞ぐ。小孔径用隆起部８２Ｓの上端面から円柱形に掘られた穴８２ａにノズル部６Ｎが収納され、型閉じで、帯状片５が弾性収縮状態で隆起部８２へ当接する。その後、ダクト６を埋設してパッド本体１を一体発泡成形し、脱型後、図１６のごとく、パッド本体１の大孔径部２１Ｌから小孔径部２１Ｓへと変わる窪み２１の段差面２１３に詰め体４が載るようにして、該詰め体４を各窪み２１内に嵌入,保持させたシートパッドを造る。   FIGS. 15 and 16 show a method of manufacturing the seat pad according to the second alternative embodiment. In order to form in the pad main body 1 a recess 21 having a small hole diameter portion 21S at the tip of the large hole diameter portion 21L, the protruding portion 82 of the lower mold 8a has a small hole diameter portion 21S at the tip of the raised portion 82L for the large hole diameter portion 21L. A raised portion 82S is provided (FIG. 15). In the height direction in which the raised portion 82 is directed to the tip, a small hole diameter raised portion 82S whose sectional diameter is slightly reduced from the large hole diameter raised portion 82L is formed stepwise. As in the first alternative embodiment, after the strip 5 is projected from the tip of the short cylinder 6N and wound around the outer peripheral surface 6N1 of the short cylinder 6N, the duct 6 with the strip 5 is set on the lower mold 8a. To do. Next, by closing the mold, the air jet port 64 is closed by the small hole diameter protruding portion 82S. The nozzle portion 6N is housed in a hole 82a dug into a cylindrical shape from the upper end surface of the small-diameter bulge portion 82S. When the mold is closed, the strip 5 comes into contact with the bulge portion 82 in an elastically contracted state. Thereafter, the duct 6 is embedded, the pad main body 1 is integrally foam-molded, and after demolding, as shown in FIG. 16, the pad main body 1 is filled in the stepped surface 213 of the recess 21 that changes from the large hole diameter portion 21L to the small hole diameter portion 21S. A seat pad in which the stuffing body 4 is fitted and held in each recess 21 is made so that the body 4 is placed thereon.

さらに、図１７は、第二別態様において詰め体４だけを置き換えた第三別態様のシートパッドの製造方法で、同図(イ)ごとくの詰め体４を用いる。段差面２１３に載る詰め体４を、大孔径部２１Ｌの大きさを合わせて該段差面２１３に載る筒部４１と、該筒部４１内に挿着され筒部４１よりも目の粗い柱状部４５と、を備えた筒部４１付き柱状部４５とし、該柱状部４５の下端面４５ｂ側を前記筒部４１よりも下方へ突出させた詰め体４とする。そして、ダクト６を埋設して一体発泡成形したパッド本体１の脱型後、詰め体４の窪み２１内への嵌入で、柱状部４５の下端面４５ｂが帯状片５に当接するようにして、各窪み２１内へ詰め体４を嵌入,保持させたシートパッドの製法になっている。
また、図１８は図１４に代わる第四別態様のシートパッドの製造方法で、窪み２１がはいり口の空気吹出口２０から底部分２１２へ向けて径が小さくなるように窪み側壁２１１がテーパ状に形成されたパッド本体１を発泡成形する。該パッド本体１の脱型後、テーパ状窪み２１へ円柱状詰め体４を図示のごとく嵌入させ、底部分２１２側をはいり口２０側よりも大きく圧縮させて、詰め体４の上面４０が中央４Ｃに向けてなだらかに盛り上がらせるシートパッドの製法とする。 Further, FIG. 17 shows a seat pad manufacturing method according to the third alternative embodiment in which only the filler 4 is replaced in the second alternative embodiment, and the filler 4 as shown in FIG. The filling body 4 placed on the stepped surface 213 includes a cylindrical portion 41 placed on the stepped surface 213 in accordance with the size of the large hole diameter portion 21L, and a columnar portion that is inserted into the cylindrical portion 41 and has a coarser mesh than the cylindrical portion 41. 45, and a stuffing body 4 in which the lower end surface 45 b side of the columnar part 45 protrudes downward from the cylinder part 41. And after demolding the pad main body 1 in which the duct 6 is embedded and integrally foam-molded, the lower end surface 45b of the columnar part 45 is brought into contact with the belt-like piece 5 by fitting into the recess 21 of the filling body 4, The seat pad is manufactured by inserting and holding the stuffing body 4 in each recess 21.
FIG. 18 shows a seat pad manufacturing method according to a fourth alternative embodiment in place of FIG. 14, and the recess side wall 211 is tapered so that the recess 21 has a diameter decreasing from the air outlet 20 of the entry port toward the bottom portion 212. The pad body 1 formed in the above is foam-molded. After removing the pad main body 1, the cylindrical stuffing body 4 is inserted into the tapered recess 21 as shown in the figure, and the bottom portion 212 side is compressed to be larger than the filling port 20 side so that the upper surface 40 of the stuffing body 4 is centered. The seat pad is made to rise gently toward 4C.

（２）車両用シートパッド
上記製造方法等で得られる車両用シートパッドは、配風用ダクト６と、このダクト６をインサート品にして一体発泡成形されているパッド本体１と、を具備するシートパッドである。ダクト６にはエア導入口６１ａが設けられると共にダクト経路にエア噴出口６４が複数設けられる。パッド本体１には、はいり口を空気吹出口２０とする窪み２１が設けられる。しかるに、このままではパッド本体１に表皮９を被せてシートクッションにした時、空気吹出口２０の周縁にハイライトＨＴができてしまう(図１０)。そこで、詰め体４をさらに具備して、該ハイライトＨＴを消失させるシートパッドにする。図１〜図９の本実施形態のシートパッドは、さらにシート状浸透阻止材Ｚがその一方の面をダクト裏面６ｂに当接し、裏当て材Ｒが該浸透阻止材Ｚを覆ってパッド本体裏面１ｂに被着一体化しているシートパッドとする。 (2) Vehicle Seat Pad A vehicle seat pad obtained by the above manufacturing method or the like includes a ventilation duct 6 and a pad body 1 integrally formed by foaming with the duct 6 as an insert. It is a pad. The duct 6 is provided with an air inlet 61a and a plurality of air jets 64 are provided in the duct path. The pad main body 1 is provided with a recess 21 having an air outlet 20 as an opening. However, if the pad body 1 is covered with the skin 9 and used as a seat cushion, the highlight HT is formed at the periphery of the air outlet 20 (FIG. 10). Therefore, the padding body 4 is further provided to form a seat pad that eliminates the highlight HT. In the seat pad of the present embodiment shown in FIGS. 1 to 9, the sheet-shaped permeation prevention material Z further abuts one surface of the sheet back surface 6b, and the backing material R covers the permeation prevention material Z so that the back surface of the pad main body. The seat pad is integrally attached to 1b.

インサート品たるダクト６は、ダクト裏面６ｂ側にエア導入口６１ａを形成する一方、ダクト経路でその表面側にエア噴出口６４を複数形成した合成樹脂製品である(図１〜図３)。空調エアがエア導入口６１ａからダクト６内に送り込まれ、エア噴出口６４からパッド本体１に設けられる窪み２１,空気吹出口２０を通ってシートパッド表面側へ配風される。   The duct 6 which is an insert product is a synthetic resin product in which an air inlet 61a is formed on the duct back surface 6b side, and a plurality of air jets 64 are formed on the surface side of the duct path (FIGS. 1 to 3). Air-conditioned air is sent into the duct 6 from the air inlet 61a, and is distributed from the air outlet 64 to the seat pad surface side through the recess 21 and the air outlet 20 provided in the pad body 1.

パッド本体１は、図２のような座部の形状で、ダクト６をインサート品にして発泡成形されているクッション体である。パッド本体１には乗員当接側の表面１ａに窪み２１が複数形成され、各窪み２１がエア噴出口６４に夫々連通し、該窪み２１へのはいり口にはエア噴出口６４よりも大きな空気吹出口２０が形成される。   The pad main body 1 is a cushion body that has a seat shape as shown in FIG. 2 and is foam-molded with the duct 6 as an insert. The pad main body 1 has a plurality of depressions 21 formed on the surface 1 a on the passenger contact side, each depression 21 communicates with an air outlet 64, and air larger than the air outlet 64 is provided at the entrance to the depression 21. The blower outlet 20 is formed.

詰め体４は、各窪み２１内に嵌入され且つ該窪み２１の側壁２１１に側周面４Ｓを当接させるようにして、空気吹出口２０の領域まで埋められている除膜処理済みプラスチックフォーム製の通気性を有する柱状体である。ここでの詰め体４は、窪み２１の形状に沿う柱状体とする。そして、この詰め体４がパッド本体１の各窪み２１内に嵌入され、窪み側壁２１１に側周面４Ｓを当接させるようにして、空気吹出口２０の領域まで埋められたシートパッドとする。
各窪み２１内に嵌入された詰め体４は、図６のように窪み２１内に埋められる。 The stuffing body 4 is made of a plastic foam that has been film-removed and is inserted into each of the recesses 21 and buried in the region of the air outlet 20 so that the side peripheral surface 4S abuts against the side wall 211 of the recesses 21. It is a columnar body having air permeability. Here, the filling body 4 is a columnar body along the shape of the recess 21. Then, the padding body 4 is fitted into each recess 21 of the pad main body 1, and the side circumferential surface 4 </ b> S is brought into contact with the recess side wall 211 to be a seat pad buried up to the region of the air outlet 20.
The stuffing body 4 fitted in each recess 21 is buried in the recess 21 as shown in FIG.

本実施形態は、除膜処理によってセル膜の大半が除去された除膜処理済みポリウレタンフォーム製の詰め体４である。ポリウレタンフォーム製のため、柔軟性,クッション性に富み、且つ優れた保形性を有し、シートパッドの窪み２１を埋める詰め体４として好適となっている。除膜処理済みポリウレタンフォーム製にして、セル数を8個／25mm〜13個／25mmの範囲内にした詰め体４がより好ましく、ここでもこれを採用する。セル数が8個／25mm未満になると、窪み２１内での詰め体４の保持が弱まり、一方、13個／25mmを越えると通気抵抗が上がり出すからである。
本詰め体４によって、通気抵抗が極めて小さく、窪み２１内に詰め体４を嵌入,保持させても、エア導入口６１ａからダクト６を介して空気吹出口２０外へと向かう通風が良好に維持される。そして、窪み２１内が詰め体４で埋め尽された状態になり、シートパッド完成後、表皮９を被せることによって窪み２１にできていたハイライトＨＴは消失する所望のシートパッドに仕上がっている。 The present embodiment is a stuffing 4 made of polyurethane foam that has been subjected to film removal, from which most of the cell membrane has been removed by film removal. Since it is made of polyurethane foam, it has excellent flexibility and cushioning properties and has excellent shape retention, and is suitable as the stuffing 4 that fills the recess 21 of the seat pad. More preferably, the stuffing 4 is made of polyurethane foam that has been subjected to film removal treatment, and the number of cells is within the range of 8/25 mm to 13/25 mm, which is also adopted here. This is because when the number of cells is less than 8/25 mm, the holding of the filling body 4 in the recess 21 is weakened, whereas when it exceeds 13/25 mm, the ventilation resistance starts to increase.
The main stuffing body 4 has extremely low ventilation resistance, and even when the stuffing body 4 is fitted and held in the recess 21, good ventilation is maintained from the air inlet 61 a to the outside of the air outlet 20 through the duct 6. Is done. And the inside of the hollow 21 will be in the state where it was filled up with the filling body 4, and after the seat pad completion, the highlight HT which was made in the hollow 21 by covering the skin 9 is finished to the desired sheet pad which disappears.

図１１,図１２は、（１）で他態様のシートパッドの製法として述べたシートパッドで、パッド本体１のメイン部２に置きスラブ７を載置,接着した他態様のシートパッドを示す。置きスラブ７がメイン部２の表面に接着される場合、本発明でいうパッド本体１で窪み２１がつくる空気吹出口２０は置きスラブ７の穿設孔の外口とする。したがって、窪み２１内だけでなく空気吹出口になる穿設孔の外口の領域まで、詰め体４で埋められた図示ごとくのシートパッドになる。
図１４は（１）で第一別態様のシートパッドの製法として述べた帯状片５を備える第一別態様のシートパッドを示す。ダクト部６Ｄから分岐し、先端筒口がエア噴出口６４になる短筒部６Ｎと、該短筒部６Ｎの先端６Ｎ２から突出させた状態にして、短筒部６Ｎの外周面６Ｎ１に巻き付けられたウレタンスラブの帯状片５をさらに具備するシートパッドになっている。詰め体４がパッド本体１の各窪み２１内に嵌入,保持されることによって、図１４のように詰め体４を形成する柱状部下面４５ｂが帯状片５の上縁５１に当接するシートパッドになっている。 FIGS. 11 and 12 show a seat pad described in (1) as a method of manufacturing a seat pad according to another embodiment, in which the slab 7 is placed and bonded to the main portion 2 of the pad main body 1 and is attached. When the placing slab 7 is bonded to the surface of the main portion 2, the air outlet 20 formed by the recess 21 in the pad main body 1 in the present invention is an outer opening of the drilling hole of the placing slab 7. Therefore, not only the inside of the recess 21 but also the region of the outer opening of the drilled hole that becomes the air outlet becomes the seat pad as shown in the figure filled with the filling body 4.
FIG. 14: shows the seat pad of the 1st another aspect provided with the strip | belt-shaped piece 5 described as a manufacturing method of the seat pad of the 1st another aspect in (1). A short tube portion 6N that branches off from the duct portion 6D and whose tip tube opening becomes an air jet port 64, and is protruded from the tip 6N2 of the short tube portion 6N, is wound around the outer peripheral surface 6N1 of the short tube portion 6N. The seat pad further includes a strip 5 of urethane slab. By inserting and holding the padding body 4 in each recess 21 of the pad main body 1, the columnar portion lower surface 45 b forming the padding body 4 becomes a seat pad that contacts the upper edge 51 of the strip 5 as shown in FIG. 14. It has become.

図１６は（１）で第二別態様のシートパッドの製法として述べた帯状片５を備える第二別態様のシートパッドを示す。空気吹出口２０から窪み２１の底面２１２へと向かう途中に、大孔径部２１Ｌから小孔径部２１Ｓへと変わる段差面２１３が形成され、且つ該段差面２１３に詰め体４が載るシートパッドとする。
また、図１７は（１）で第三別態様のシートパッドの製法として述べた帯状片５を備える第三別態様のシートパッドを示す。段差面２１３に載る詰め体４を、大孔径部２１Ｌの大きさに合わせて該段差面２１３に載る筒部４１と、筒部４１内に挿着され、該筒部４１よりも目の粗い柱状部４５と、を備えた筒部付き柱状体とする。柱状部４５の下端面４５ｂ側を筒部４１よりも下方へ突出させ、該柱状部４５の下端面４５ｂを帯状片５に当接させたシートパッドになっている。尚、詰め体４の筒部付き柱状体に係る筒部４１は、前記セル数が8個／25mm〜13個／25mmの範囲とする制約を受けない。柱状部４５を使って、通風量が十分確保できるからである。
また、図１８は第四別態様のシートパッドの製法として述べたシートパッドで、詰め体４が、空気吹出口２０の領域で、周縁４Ｇから中央４Ｃに向けてなだらかに盛り上がって、窪み２１内に埋められている。詰め体上面４０が中央４Ｃに向けて盛り上がる構成は、窪み側面２１１のテーパを大きくし、上面が平らな柱状詰め体４に係る除膜ウレタンの下側を大きく圧縮させて(図１８の黒矢印)、窪み２１に嵌め込むことで(図１８の白抜矢印)、実現している。
他の構成は（１）車両用シートパッドの製造方法と同様で、その説明を省く。 FIG. 16: shows the seat pad of the 2nd another aspect provided with the strip | belt-shaped piece 5 described as a manufacturing method of the seat pad of the 2nd another aspect in (1). A step surface 213 that changes from the large hole diameter portion 21L to the small hole diameter portion 21S is formed on the way from the air outlet 20 to the bottom surface 212 of the recess 21, and the pad 4 is placed on the step surface 213. .
Moreover, FIG. 17 shows the seat pad of the 3rd another aspect provided with the strip | belt-shaped piece 5 described as a manufacturing method of the seat pad of the 3rd another aspect in (1). The stuffing body 4 placed on the stepped surface 213 is inserted into the tubular portion 41 in accordance with the size of the large hole diameter portion 21L and the tubular portion 41, and the columnar shape is coarser than the tubular portion 41. A columnar body with a cylindrical portion provided with a portion 45. The lower end surface 45 b side of the columnar part 45 protrudes downward from the cylindrical part 41, and the seat pad is formed by bringing the lower end surface 45 b of the columnar part 45 into contact with the strip 5. In addition, the cylinder part 41 which concerns on the columnar body with a cylinder part of the filling body 4 does not receive the restriction | limiting which makes the said cell number the range of 8 pieces / 25mm-13 pieces / 25mm. This is because a sufficient amount of ventilation can be secured by using the columnar portion 45.
FIG. 18 is a seat pad described as a method of manufacturing a seat pad according to a fourth embodiment. The filling body 4 rises gently from the peripheral edge 4G toward the center 4C in the area of the air outlet 20, and the inside of the depression 21 Buried in. In the configuration in which the upper surface 40 of the stuffing body rises toward the center 4C, the taper of the concave side surface 211 is increased, and the lower side of the film removal urethane related to the columnar stuffing body 4 having a flat upper surface is greatly compressed (the black arrow in FIG. 18). This is realized by fitting in the recess 21 (open arrow in FIG. 18).
Other configurations are the same as (1) the method of manufacturing the vehicle seat pad, and the description thereof is omitted.

（３）効果
このように構成した車両用シートパッド及びその製造方法は、詰め体４が各窪み２１内に嵌入され、空気吹出口２０の領域まで埋められるので、シートパッドに表皮９を被せてシートクッションにしたとき、窪み２１の部位で、図１０のような表皮９の凹み９０ができない。そして、窪み２１周りのパッド本体表面１ａと略面一になる空気吹出口２０の領域にまで埋まる詰め体４の上面が表皮９の裏面に当たるので、空気吹出口２０の外周縁にできていたハイライトＨＴもなくなる(図５)。空気吹出口２０での表皮９の凹み９０やその外周縁で目立っていたハイライトＨＴの不具合を解消できる。ダクト６のエア噴出口６４を隆起部８２で塞ぐことから空気吹出口２０,窪み２１が必然的に大きくなり、表皮９を被せてもハイライトＨＴがでて見栄えが悪かったが、詰め体４によって、斯かる問題を解決する。
一方、本発明で、必須構成要件の中核部分たる詰め体４は、除膜処理済みプラスチックフォーム製の通気性柱状体であるので、通気抵抗が小さく、窪み２１内に嵌入され空気吹出口２０の領域まで埋められていても、空気吹出口２０からの必要エア量を十分確保できる。表皮９を被せてシートクッションにした車両設置時に、各空気吹出口２０から吹き出す必要エア量を確保しながら、従来、空気吹出口２０に現れていた凹み９０やハイライトＨＴを消すことができ、品質向上に大きく貢献できる。
そして、詰め体４が、空気吹出口２０の領域で、その周縁４Ｇから中央４Ｃに向けてなだらかに盛り上がって、窪み２１内に埋められていると(図１８)、乗員の着座等で、空気吹出口２０の部位が押し潰されても、詰め体４の中央４Ｃで盛り上がった部分で対応可能になる。多少の外力が加わっても、空気吹出口２０の外周縁域に在る詰め体４の部分が沈んだり変形したりしないので、凹み９０やハイライトＨＴを発生させない。 (3) Effect In the vehicle seat pad configured as described above and the manufacturing method thereof, the padding body 4 is inserted into each recess 21 and buried up to the region of the air outlet 20, so that the seat pad is covered with the skin 9. When the seat cushion is used, the dent 90 of the epidermis 9 as shown in FIG. And since the upper surface of the filling body 4 buried up to the area of the air blower outlet 20 that is substantially flush with the pad main body surface 1a around the recess 21 hits the back surface of the skin 9, the high edge formed on the outer peripheral edge of the air blower outlet 20 The light HT is also eliminated (FIG. 5). The problem of the highlight HT which was conspicuous in the dent 90 of the outer skin 9 at the air outlet 20 or the outer periphery thereof can be solved. Since the air outlet 64 of the duct 6 is blocked by the raised portion 82, the air outlet 20 and the recess 21 inevitably become large, and the highlight HT appears even when the skin 9 is covered, but the stuffing 4 To solve such a problem.
On the other hand, in the present invention, the stuffing body 4 which is a core part of the essential constituent elements is a gas-permeable columnar body made of a plastic film that has been subjected to film removal treatment. Even if the area is filled, a sufficient amount of air from the air outlet 20 can be secured. While securing the necessary amount of air to be blown out from each air outlet 20 at the time of vehicle installation that covers the skin 9 and forms a seat cushion, the dent 90 and the highlight HT that have conventionally appeared at the air outlet 20 can be erased, Can greatly contribute to quality improvement.
When the stuffing body 4 rises gently from the peripheral edge 4G toward the center 4C in the region of the air outlet 20 and is buried in the recess 21 (FIG. 18), Even if the part of the blower outlet 20 is crushed, it becomes possible to cope with the raised portion at the center 4C of the filling body 4. Even if some external force is applied, the portion of the stuffing body 4 in the outer peripheral area of the air outlet 20 does not sink or deform, so that the dent 90 and the highlight HT are not generated.

また、ダクト６にダクト部６Ｄから分岐し、先端筒口がエア噴出口６４になる短筒部６Ｎと、該短筒部６Ｎの先端６Ｎ２から突出させた状態にして、短筒部６Ｎの外周面６Ｎ１に巻き付けられたウレタンスラブの帯状片５をさらに具備すると(図１４)、型閉じで該帯状片５が弾性収縮して隆起部８２に当接するので、エア噴出口６４を確実に塞ぐことができる。そして、詰め体４を各窪み２１内へ嵌入,保持させた際、詰め体４の下面が弾性復元した帯状片５に当接して、剛性のノズル部６Ｎには当たらないので、ともすれば損傷を受け易いスポンジ状詰め体４がノズル部６Ｎによって傷つくことがない。   Further, a short cylinder portion 6N which branches from the duct portion 6D to the duct 6 and has a tip cylinder opening as an air outlet 64, and an outer peripheral surface of the short cylinder portion 6N in a state of protruding from the tip 6N2 of the short cylinder portion 6N. When the strip 5 of the urethane slab wound around 6N1 is further provided (FIG. 14), the strip 5 is elastically contracted by the mold closing and comes into contact with the raised portion 82, so that the air outlet 64 can be reliably blocked. it can. When the stuffing body 4 is fitted and held in each recess 21, the lower surface of the stuffing body 4 comes into contact with the elastic strip 5 and does not hit the rigid nozzle portion 6N. The sponge-like stuffing body 4 that is susceptible to damage is not damaged by the nozzle portion 6N.

加えて、空気吹出口２０から窪み２１の底面２１２へと向かう途中に、大孔径部２１Ｌから小孔径部２１Ｓへと変わる段差面２１３が形成され、該段差面２１３に詰め体４が載る構成とすると(図１６)、詰め体４の下面が段差面２１３に受け支えられるので、窪み２１内に嵌入される詰め体４が安定維持される。
さらに、前記段差面２１３に載る前記詰め体４を、大孔径部２１Ｌの大きさに合わせて該段差面２１３に載る筒部４１と、該筒部内に挿着され筒部４１よりも目の粗い柱状部４５とを備えた筒部付き柱状体とすると、より効果的な役割分担をなし得る。筒部４１よりも目の粗い柱状部４５にすることで、エア導入口６１ａから空気吹出口２０外へと向かう通風量を良好に保つことができる。一方、目の粗い柱状部４５だけでは窪み２１内での安定保持に欠ける不安定さを、目の細かい筒部４１側が詰め体４の保形性を担保し、且つ段差面２１３との接合力を高めて、窪み２１内での詰め体４の安定維持を図る。柱状部４５の下端面４５ｂ側を筒部４１よりも下方へ突出させ、該柱状部４５の下端面４５ｂを前記帯状片５に当接させると、詰め体４がより安定保持される。さらに、目が粗く傷つきやすい柱状部４５は剛性のノズル部６Ｎに直接当たらないので、柱状部４５の長期保形に効を奏する。詰め体４の部位での良好なクッション性も得られる。 In addition, a step surface 213 that changes from the large hole diameter portion 21L to the small hole diameter portion 21S is formed on the way from the air outlet 20 to the bottom surface 212 of the recess 21, and the padding body 4 is placed on the step surface 213. Then (FIG. 16), since the lower surface of the stuffing body 4 is received and supported by the step surface 213, the stuffing body 4 inserted into the recess 21 is stably maintained.
Furthermore, the filling body 4 placed on the stepped surface 213 is inserted into the tubular portion 41 according to the size of the large hole diameter portion 21L, and inserted into the tubular portion, and is coarser than the tubular portion 41. If it is a columnar body with a cylinder part provided with the columnar part 45, more effective role sharing can be achieved. By making the columnar part 45 coarser than the cylindrical part 41, the air flow rate from the air inlet 61a to the outside of the air outlet 20 can be kept good. On the other hand, the instability that lacks stable holding in the recess 21 is obtained only with the coarse columnar part 45, the shape of the cylindrical part 41 on the fine side ensures the shape retaining property of the stuffing body 4, and the bonding force with the step surface 213 To increase the stability of the filling body 4 in the recess 21. If the lower end surface 45b side of the columnar part 45 protrudes below the cylinder part 41 and the lower end surface 45b of the columnar part 45 is brought into contact with the strip-like piece 5, the stuffing body 4 is held more stably. Further, the columnar portion 45 that is rough and easily damaged does not directly hit the rigid nozzle portion 6N, so that the columnar portion 45 is effective for long-term shape retention. A good cushioning property at the portion of the filling body 4 is also obtained.

さらにいえば、置きスラブ７に、その密度をパッド本体１の密度よりも小さくし、且つその硬度を該パッド本体１の硬度よりも低くした連続気泡フォームのスラブを採用すると、シートパッドのクッション性がより良好になる。また、浸透阻止材Ｚを備えると、発泡原料ｇの注入時に誤ってダクト６上に載っても、シート材が裏当て材Ｒへの発泡原料ｇの浸透を阻止し、裏当て材裏面側への発泡原料ｇの浸み出しを防ぐ。シートフレームとの擦れによる異音発生防止に役立つ。
このように、本車両用シートパッド及びその製造方法は、上述した種々の優れた効果を発揮し極めて有益である。 More specifically, when the open slab 7 having a density lower than that of the pad body 1 and having a lower hardness than that of the pad body 1 is used for the slab 7, the cushioning property of the seat pad is improved. Will be better. Further, when the permeation prevention material Z is provided, even if the foaming raw material g is inadvertently placed on the duct 6 when the foaming raw material g is injected, the sheet material prevents the foaming raw material g from penetrating into the backing material R, and the back side of the backing material Prevents the foaming raw material g from leaching out. Useful for preventing abnormal noise from rubbing against the seat frame.
As described above, the vehicle seat pad and the manufacturing method thereof are extremely useful because they exhibit the various excellent effects described above.

尚、本発明においては前記実施形態に示すものに限られず、目的,用途に応じて本発明の範囲で種々変更できる。パッド本体１,詰め体４,帯状片５,ダクト６,発泡成形型８等の形状,大きさ,個数,材質等は用途に合わせて適宜選択できる。例えば実施形態はシートパッドをクッションパッドに適用したが、バックパッドにも適用できる。   The present invention is not limited to those shown in the above-described embodiment, and various modifications can be made within the scope of the present invention depending on the purpose and application. The shape, size, number, material, and the like of the pad main body 1, the stuffing body 4, the strip-like piece 5, the duct 6, the foaming mold 8, etc. can be appropriately selected according to the application. For example, the seat pad is applied to the cushion pad in the embodiment, but the seat pad can also be applied to the back pad.

１ パッド本体
１ａ パッド本体表面（表面）
２０ 空気吹出口（はいり口）
２１ 窪み
２１Ｌ 大孔径部
２１Ｓ 小孔径部
２１２ 底面（底部分）
２１３ 段差面
４ 詰め体
４１ 筒部
４５ 柱状部
５ 帯状片
６ ダクト
６Ｎ 短筒部（ノズル部）
６１ａ エア導入口
６４ エア噴出口
８ 発泡成形型
８２ 隆起部 1 Pad body 1a Pad body surface (surface)
20 Air outlet
21 hollow 21L large hole diameter part 21S small hole diameter part 212 bottom face (bottom part)
213 Stepped surface 4 Stuffed body 41 Tube portion 45 Column portion 5 Strip piece 6 Duct 6N Short tube portion (nozzle portion)
61a Air introduction port 64 Air ejection port 8 Foaming mold 82 Raised portion

Claims (9)

エア導入口が設けられると共にダクト経路にエア噴出口が複数設けられた配風用ダクトと、
乗員当接側の表面に窪みが複数形成され、各窪みが前記エア噴出口に夫々連通し、該窪みへのはいり口を前記エア噴出口よりも大きな空気吹出口にして、且つ前記ダクトをインサート品にして発泡成形されているパッド本体と、を具備する車両用シートパッドであって、
柱状体にして、前記各窪み内に嵌入され且つ該窪みの側壁に側周面を当接させるようにして、前記空気吹出口の領域まで埋められている除膜処理済みプラスチックフォーム製の通気性詰め体を、さらに具備することを特徴とする車両用シートパッド。 An air distribution duct provided with an air inlet and a plurality of air outlets in the duct path;
A plurality of depressions are formed on the surface on the passenger contact side, each depression communicates with each of the air ejection openings, and the entrance to the depression is an air outlet larger than the air ejection opening, and the duct is inserted. A vehicle seat pad comprising a pad body that is foam molded as a product,
Breathability made of plastic foam that is formed into a columnar body and is embedded in each of the depressions and is buried up to the area of the air outlet so that the side peripheral surface is in contact with the side wall of the depression. A vehicle seat pad, further comprising a padding body. 前記ダクトにダクト部から分岐し、先端筒口が前記エア噴出口になる短筒部と、該短筒部の先端から突出させた状態にして、該短筒部の外周面に巻き付けられたウレタンスラブの帯状片と、をさらに具備する請求項１記載の車両用シートパッド。 A short cylinder part branched from the duct part to the duct, and a front end of the short cylinder part is projected from the front end of the short cylinder part, and a urethane slab wound around the outer peripheral surface of the short cylinder part The vehicle seat pad according to claim 1, further comprising: 前記空気吹出口から前記窪みの底面へと向かう途中に、大孔径部から小孔径部へと変わる段差面が形成され、且つ該段差面に前記詰め体が載る請求項１又は２に記載の車両用シートパッド。 3. The vehicle according to claim 1, wherein a stepped surface that changes from a large hole diameter portion to a small hole diameter portion is formed on the way from the air outlet to the bottom surface of the recess, and the padding is placed on the stepped surface. Seat pad. 前記段差面に載る前記詰め体を、前記大孔径部の大きさに合わせて該段差面に載る筒部と、該筒部内に挿着され該筒部よりも目の粗い柱状部とを備えた筒部付き柱状体とし、該柱状部の下端面側を前記筒部よりも下方へ突出させ、該柱状部の下端面を前記帯状片に当接させた請求項３記載の車両用シートパッド。 The stuffing body mounted on the step surface includes a cylindrical portion that is mounted on the step surface according to the size of the large hole diameter portion, and a columnar portion that is inserted into the cylindrical portion and is coarser than the cylindrical portion. The vehicle seat pad according to claim 3, wherein the columnar body has a cylindrical portion, the lower end surface side of the columnar portion protrudes downward from the cylindrical portion, and the lower end surface of the columnar portion abuts on the strip-shaped piece. 前記詰め体が、前記空気吹出口の領域で、その周縁から中央に向けてなだらかに盛り上がって、前記窪み内に埋められている請求項１乃至４のいずれか１項に記載の車両用シートパッド。 The vehicle seat pad according to any one of claims 1 to 4, wherein the stuffing body is gently raised from the peripheral edge toward the center in the region of the air outlet, and is buried in the recess. . エア導入口が設けられると共にダクト経路にエア噴出口が複数設けられた配風用ダクトを、発泡成形型にセットし、該発泡成形型の隆起部で該エア噴出口を塞いで型閉じをし、その後、前記隆起部で各窪みを形成すると共にその窪みへのはいり口である空気吹出口が前記エア噴出口よりも大きくなるパッド本体を、前記ダクトを埋設して一体発泡成形した車両用シートパッドの製造方法であって、
前記ダクトを埋設して前記パッド本体を一体発泡成形し、脱型後、さらに、柱状体にして、除膜処理済みプラスチックフォーム製の通気性詰め体を、その側周面が前記窪みの側壁に当接するようにして各窪み内へ嵌入させ、前記空気吹出口の領域まで埋めたことを特徴とする車両用シートパッドの製造方法。 An air distribution duct provided with an air inlet and a plurality of air outlets in the duct path is set in a foam molding die, and the mold is closed by closing the air outlet with a raised portion of the foam molding die. Thereafter, the vehicle body seat is formed by integrally forming the pad main body with the duct embedded in the pad body in which each depression is formed in the raised portion and the air outlet to the depression is larger than the air outlet. A method for manufacturing a pad, comprising:
The duct is embedded and the pad main body is integrally foam-molded. After demolding, it is further made into a columnar body, and a breathable stuffed body made of a plastic film that has been subjected to film removal, with its side peripheral surface on the side wall of the recess. A method for manufacturing a vehicle seat pad, wherein the vehicle seat pad is fitted into each recess so as to abut and is filled up to the region of the air outlet. 前記ダクトが、ダクト部から上向き分岐し、先端筒口を前記エア噴出口とする短筒部を備えて、ウレタンスラブの帯状片を、該短筒部の先端から突出させた状態にして該短筒部の外周面に巻き付けた後、該帯状片付きダクトを前記発泡成形型にセットし、該帯状片付きダクトを埋設して前記パッド本体を一体発泡成形した請求項６記載の車両用シートパッドの製造方法。 The duct is provided with a short cylinder part that branches upward from the duct part and has a tip cylinder port as the air outlet, and the short piece of urethane slab is projected from the tip of the short cylinder part. The method of manufacturing a vehicle seat pad according to claim 6, wherein the belt with the strip is set in the foaming mold after being wound around the outer peripheral surface of the portion, and the pad main body is integrally foam-molded by embedding the duct with the strip. . 前記隆起部が先端に向かう高さ方向で、大孔径部用隆起部から断面径が一回り小さくなる小孔径部用隆起部を形成し、該小孔径部用隆起部で前記エア噴出口を塞ぎ、脱型後、パッド本体の大孔径部から小孔径部へと変わる前記窪みの段差面に前記詰め体を載せた請求項６又は７記載の車両用シートパッドの製造方法。 A ridge for a small hole diameter is formed in which the cross-sectional diameter is slightly reduced from the ridge for the large hole diameter in the height direction toward the tip, and the air outlet is blocked by the ridge for the small hole diameter. The method for manufacturing a vehicle seat pad according to claim 6 or 7, wherein after the demolding, the padding body is placed on the stepped surface of the recess that changes from a large hole diameter portion to a small hole diameter portion of the pad main body. 前記段差面に載る前記詰め体を、前記大孔径部の大きさを合わせて該段差面に載る筒部と、該筒部内に挿着され該筒部よりも目の粗い柱状部とを備えた筒部付き柱状体とし、該柱状部の下端面側を前記筒部よりも下方へ突出させ、前記詰め体の前記窪み内への嵌入で、該柱状部の下端面を前記帯状片に当接させた請求項８記載の車両用シートパッドの製造方法。 The stuffing body mounted on the step surface is provided with a cylindrical portion that is mounted on the step surface in accordance with the size of the large hole diameter portion, and a columnar portion that is inserted into the cylindrical portion and coarser than the cylindrical portion. A columnar body with a cylindrical portion is formed, the lower end surface side of the columnar portion protrudes downward from the cylindrical portion, and the lower end surface of the columnar portion abuts on the strip-shaped piece by fitting the stuffing body into the recess. A method for manufacturing a vehicle seat pad according to claim 8.
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