JP2010022705A - Vehicle seat pad and its molding method - Google Patents

Vehicle seat pad and its molding method Download PDF

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JP2010022705A
JP2010022705A JP2008189899A JP2008189899A JP2010022705A JP 2010022705 A JP2010022705 A JP 2010022705A JP 2008189899 A JP2008189899 A JP 2008189899A JP 2008189899 A JP2008189899 A JP 2008189899A JP 2010022705 A JP2010022705 A JP 2010022705A
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bag
vehicle seat
seat pad
main plate
space
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JP5320882B2 (en
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Isanori Ohashi
功典 大橋
Manabu Saito
学 齋藤
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Bridgestone Corp
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Bridgestone Corp
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  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
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Abstract

<P>PROBLEM TO BE SOLVED: To efficiently manufacture a vehicle seat pad which prevents the remaining of a gas near a cavity end part and has no void. <P>SOLUTION: The seat back pad 1 has a main plate part 2 which touches the back of a crew to the front face, an extended part 3 which is extended to the rear from the upper edge and right and left side edges of this main plate part 2, and an overhang part 4 jutted out of this extended part 3 to the center side of the back of the main plate part 2. The overhang part 4 prepared along the upper edge of the seat back pad 1 hangs down from the extended part 3. A bag-like object 5 is formed on the side of the main plate part 2 of the overhang part 4. The bag-like object 5 consists of felt. A buried body is composed by filling foaming resin, which composes the extended part 3, into this bag-like object 5. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明はシートバックパッドに適用するのに好適な車両用シートパッドに係り、特に裏面の周縁に張出部が設けられ、この張出部内に埋設体が設けられている車両用シートパッドに関する。また、本発明は、この車両用シートパッドの成形方法に関する。   The present invention relates to a vehicle seat pad suitable for being applied to a seat back pad, and more particularly to a vehicle seat pad in which an overhang is provided on the periphery of the back surface, and an embedded body is provided in the overhang. The present invention also relates to a method for forming the vehicle seat pad.

シートバックパッドの上縁の裏面には、下方へ張り出すように張出部が設けられている。かかる張出部を有したシートバックパッドを金型によって発泡成形する場合、張出部にガスが残留してボイドが生じ易い（下記特許文献１）。この理由について第５，６図を参照して説明する。   A protruding portion is provided on the back surface of the upper edge of the seat back pad so as to protrude downward. When a seat back pad having such an overhanging part is foam-molded by a mold, gas remains in the overhanging part and voids are easily generated (Patent Document 1 below). The reason for this will be described with reference to FIGS.

成形型（金型）２０は、下型２１、上型２２及び中子２３によって構成されている。上型２２及び中子２３は、下型２１の一端側に対し、それぞれ支持軸２４ａ，２４ｂを介して開閉可能に連結されている。   The molding die (mold) 20 includes a lower die 21, an upper die 22 and a core 23. The upper mold 22 and the core 23 are connected to one end side of the lower mold 21 through support shafts 24a and 24b so as to be opened and closed.

キャビティは、シートバックパッドの主板部３１を成形する第１空間２５ａと、延出部３２を成形する第２空間２５ｂと、張出部３３を成形する第３空間２５ｃとを有する。   The cavity has a first space 25a for molding the main plate portion 31 of the seat back pad, a second space 25b for molding the extension portion 32, and a third space 25c for molding the overhang portion 33.

この成形型２０を用いて車両用シートバックパッドを成形するには、まず、型開きした状態で、第１空間２５ａ内に発泡樹脂原料を注入する。また、中子２３の成形面上に、サポータ材と通称される被覆シート２６（第５図参照）を例えば両面テープによって張り付ける。この状態で中子２３及び上型２２を型閉めし、発泡樹脂原料を発泡させる。   In order to mold a vehicle seat back pad using the molding die 20, first, a foamed resin material is injected into the first space 25a in a state where the mold is opened. Further, a covering sheet 26 (refer to FIG. 5) commonly referred to as a supporter material is pasted on the molding surface of the core 23 with, for example, a double-sided tape. In this state, the core 23 and the upper mold 22 are closed to foam the foamed resin material.

第１空間２５ａ内の発泡樹脂原料は、その発泡の進行に伴って、第１空間２５ａ、第２空間２５ｂ及び第３空間２５ｃをこの順に充填していく。キャビティ内のガスは、成形型の合わせ面間から外部に排出されるが、ガスが抜け切らずにこの第３空間２５ｃにガスが残留すると、第５図のようにボイドＢが発生し、製品外観が損なわれる。   The foamed resin material in the first space 25a fills the first space 25a, the second space 25b, and the third space 25c in this order as the foaming progresses. The gas in the cavity is discharged to the outside from between the mating surfaces of the mold, but if the gas remains in the third space 25c without being completely removed, a void B is generated as shown in FIG. Appearance is impaired.

特許文献１では、かかるボイド発生を防止するために第７図のように第３空間２５ｃに断面山形状の埋設体（補助発泡体）２７を配置している。この埋設体２７を設けると、第３空間２５ｃ内にあっては、空間の高さが、第２空間２５ｂ側から埋設体２７の頂部位置までの間において徐々に狭められている。また、この空間高さは、埋設体２７の頂部位置から第３空間２５ｃの先端に向かって更に徐々に狭められている。このため、第３空間２５ｃに流れ込んだ発泡樹脂（ウレタン）Ｍは、第３空間２５ｃ内の流路を徐々に流速を速めながら円滑に流れる。その結果、第３空間２５ｃ内のガスは、上型２２と中子２３との合わせ面間から成形型２０の外部に円滑に押し出され、発泡樹脂Ｍは、第３空間２５ｃ内に円滑に充満する。これにより、ボイドＢの発生が防止される。   In Patent Document 1, an embedded body (auxiliary foam) 27 having a mountain-shaped cross section is disposed in the third space 25c as shown in FIG. When the embedded body 27 is provided, the height of the space is gradually narrowed from the second space 25b side to the top position of the embedded body 27 in the third space 25c. The space height is gradually narrowed from the top position of the embedded body 27 toward the tip of the third space 25c. For this reason, the foamed resin (urethane) M that has flowed into the third space 25c flows smoothly through the flow path in the third space 25c while gradually increasing the flow velocity. As a result, the gas in the third space 25c is smoothly pushed out of the molding die 20 from between the mating surfaces of the upper mold 22 and the core 23, and the foamed resin M fills the third space 25c smoothly. To do. Thereby, generation of void B is prevented.

第８図は、このようにして成形されたシートバックパッド３０の縦断面図であり、３１は主板部、３２は該主板部３１の上縁から後方に延出した延出部、３３は該延出部３２の後端から垂下する張出部を示している。主板部３１の前面に乗員の背中が当接する。   FIG. 8 is a longitudinal sectional view of the seat back pad 30 formed in this way, 31 is a main plate portion, 32 is an extended portion extending rearward from the upper edge of the main plate portion 31, and 33 is the An overhanging portion that hangs down from the rear end of the extending portion 32 is shown. The back of the occupant comes into contact with the front surface of the main plate portion 31.

なお、特許文献２にも同様の埋設体を設けることが記載されている。
特開２００８−２３０８４ 特開２００７−２３０８４ Patent Document 2 also describes providing a similar buried body.
JP 2008-23084 A JP2007-23084

上記従来の車両用シートパッド３０においては、埋設体２７は樹脂発泡体のチップをバインダによって結合したものであり、被覆シート２６に両面テープによって仮留めされている（特許文献１の００１７，００２１段落）。かかる埋設体２７は嵩張るため、予め被覆シートと一体化しておくと被覆シートが嵩張ってしまい、輸送効率が低い。成形工程において被覆シート２６に埋設体２７を取り付けるのでは、作業に手間がかかり、製造効率が低い。   In the above-described conventional vehicle seat pad 30, the embedded body 27 is formed by bonding resin foam chips with a binder, and is temporarily fixed to the covering sheet 26 with double-sided tape (see paragraphs 0017 and 0021 of Patent Document 1). ). Since the embedded body 27 is bulky, if it is integrated with the covering sheet in advance, the covering sheet becomes bulky and transportation efficiency is low. If the embedded body 27 is attached to the covering sheet 26 in the molding process, the work is troublesome and the manufacturing efficiency is low.

本発明は、キャビティ末端部付近におけるガスの残留が防止され、ボイドが無い車両用シートパッドを効率よく製造することを目的とする。   An object of the present invention is to efficiently manufacture a vehicle seat pad that is free from residual gas in the vicinity of a cavity end portion and has no voids.

本発明（請求項１）の車両用シートパッドは、乗員当接面を有した発泡樹脂よりなる主板部と、該主板部の少なくとも一部の周縁から乗員当接面と反対方向へ延出した発泡樹脂よりなる延出部と、該延出部から主板部の裏面の中央側へ張り出す発泡樹脂よりなる張出部とを有し、該主板部、延出部及び張出部が一体に発泡成形され、該張出部の主板部側に埋設体が設けられている車両用シートパッドにおいて、該埋設体は、該張出部を構成する発泡樹脂が内部に充填された袋状体よりなることを特徴とするものである。   The vehicle seat pad of the present invention (Claim 1) extends in the opposite direction to the occupant abutment surface from a main plate portion made of foamed resin having an occupant abutment surface, and at least a peripheral edge of the main plate portion. An extension part made of foamed resin, and an extension part made of foamed resin that projects from the extension part to the center side of the back surface of the main plate part, and the main plate part, the extension part, and the extension part are integrated. In a vehicle seat pad that is foam-molded and has an embedded body provided on the main plate portion side of the overhang portion, the embedded body is formed from a bag-like body that is filled with a foam resin that constitutes the overhang portion. It is characterized by.

請求項２の車両用シートパッドは、請求項１において、該埋設体は、該張出部の張出方向と交差方向に延設されると共に、前記延出部に向かって開放していることを特徴とするものである。   The vehicle seat pad according to claim 2 is the vehicle seat pad according to claim 1, wherein the embedded body extends in a direction intersecting with the extending direction of the protruding portion and is open toward the extending portion. It is characterized by.

請求項３の車両用シートパッドは、請求項１又は２において、該車両用シートパッドの裏面にシート状のサポータ材が設けられており、前記袋状体は該サポータ材に連結されていることを特徴とするものである。   The vehicle seat pad according to claim 3 is the vehicle seat pad according to claim 1 or 2, wherein a sheet-like support material is provided on the back surface of the vehicle seat pad, and the bag-like body is connected to the support material. It is characterized by.

請求項４の車両用シートパッドは、請求項３において、該袋状体は、サポータ材と対向する主片と、該主片の周縁から前記サポータ材に向って垂下する垂下片とを有していることを特徴とするものである。   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 bag-like body has a main piece that faces the supporter material, and a hanging piece that hangs down from the periphery of the main piece toward the supporter material. It is characterized by that.

請求項５の車両用シートパッドは、請求項１ないし４のいずれか１項において、前記袋状体はフェルトよりなることを特徴とするものである。   A vehicle seat pad according to a fifth aspect of the present invention is the vehicle seat pad according to any one of the first to fourth aspects, wherein the bag-like body is made of felt.

請求項６の車両用シートパッドは、請求項１ないし５のいずれか１項において、該車両用シートパッドは前席用シートバックパッドであることを特徴とするものである。   A vehicle seat pad according to a sixth aspect is the vehicle seat pad according to any one of the first to fifth aspects, wherein the vehicle seat pad is a front seat back pad.

本発明（請求項７）の車両用シートパッドは、請求項１ないし６のいずれか１項の車両用シートパッドを成形する方法であって、金型内に前記袋状体を配置して発泡成形することを特徴とするものである。   A vehicle seat pad according to the present invention (Claim 7) is a method of forming the vehicle seat pad according to any one of Claims 1 to 6, wherein the bag-like body is disposed in a mold and foamed. It is characterized by molding.

本発明（請求項１〜６）の車両用シートパッドは本発明（請求項７）の成形方法によって成形される。この車両用シートパッドにあっては、袋状体と、この袋状体内に充填された発泡樹脂とで埋設体を構成している。この袋状体を例えば延出部にのみ向けて開放したものとし、袋状体をサポータ材に取り付けて発泡成形すると、発泡しながら張出部に入り込んできた樹脂が該袋状体内に充填され、埋設体が構成される。   The vehicle seat pad of the present invention (Claims 1 to 6) is molded by the molding method of the present invention (Claim 7). In this vehicle seat pad, an embedded body is constituted by a bag-like body and a foamed resin filled in the bag-like body. For example, when this bag-like body is opened only toward the extending portion and the bag-like body is attached to the support material and foam-molded, the resin that has entered the overhanging portion while being foamed is filled into the bag-like body. The buried body is constructed.

この袋状体は嵩張らないので、サポータ材に予め取り付けておいてもサポータ材が嵩張らず、サポータ材の輸送効率が良好である。   Since this bag-like body is not bulky, the supporter material is not bulky even if it is previously attached to the supporter material, and the transport efficiency of the supporter material is good.

この袋状体をフェルトにて構成した場合、フェルトはガス透過性が良好であるので、袋状体内にガスが残留せず、ボイドの発生が防止される。   When the bag-like body is formed of felt, the felt has good gas permeability, so that no gas remains in the bag-like body, and generation of voids is prevented.

本発明は、前席用シートバックパッドに適用するのに好適である。   The present invention is suitable for application to a front seat back pad.

以下、図面を参照して実施の形態について説明する。   Hereinafter, embodiments will be described with reference to the drawings.

第１図（ａ）は実施の形態に係る自動車前席用シートバックパッドの後方からの斜視図、第１図（ｂ）は同（ａ）のＢ−Ｂ線断面図、第１図（ｃ）は同（ｂ）の一部の拡大図、第２図（ａ）はシートバックパッド成形用金型の一部の断面図、同（ｂ）は同（ａ）のＢ−Ｂ線断面図である。第３図（ａ），（ｂ）は袋状体の斜視図である。第４図は袋状体の別例を示す斜視図である。   FIG. 1 (a) is a perspective view from the back of a seat back pad for a front seat of an automobile according to the embodiment, FIG. 1 (b) is a sectional view taken along the line BB of FIG. 1 (a), and FIG. ) Is an enlarged view of a part of FIG. 2 (b), FIG. 2 (a) is a sectional view of a part of a mold for forming a seat back pad, and FIG. It is. 3 (a) and 3 (b) are perspective views of a bag-like body. FIG. 4 is a perspective view showing another example of the bag-like body.

第１図の通り、シートバックパッド１は、前面に対して乗員の背中が当る主板部２と、この主板部２の上縁及び左右の側縁から後方に延出した延出部３と、この延出部３から主板部２の背面の中央側へ張り出した張出部４とを有する。車両用シートパッド１の上縁に沿って設けられた張出部４にあっては、張出部４は延出部３の後部から垂下している。   As shown in FIG. 1, the seat back pad 1 includes a main plate portion 2 on which the occupant's back hits the front surface, an extension portion 3 extending rearward from the upper edge and left and right side edges of the main plate portion 2, The projecting portion 4 has a projecting portion 4 projecting from the extending portion 3 toward the center of the back surface of the main plate portion 2. In the overhanging portion 4 provided along the upper edge of the vehicle seat pad 1, the overhanging portion 4 hangs from the rear portion of the extending portion 3.

シートバックパッド１の上縁部に沿う張出部４の主板部２側に埋設体が設けられている。この埋設体は、袋状体５と、この袋状体内に充填された発泡樹脂とからなる。主板部２の背面から延出部３にかけてサポータ材（被覆シート）６が設けられている。   An embedded body is provided on the main plate portion 2 side of the overhang portion 4 along the upper edge portion of the seat back pad 1. The buried body is composed of a bag-like body 5 and a foamed resin filled in the bag-like body. A supporter material (covering sheet) 6 is provided from the back surface of the main plate portion 2 to the extending portion 3.

この袋状体５は、サポータ材６に対面する長方形状の主片５ａと、主片５ａの１対の短辺から垂下する垂下片５ｂ，５ｂと、主片５ａの一方の長辺から垂下する垂下片５ｃと、垂下片５ｂ，５ｃから張り出すフランジ片５ｄ，５ｅとからなり、他方の長辺に沿ってのみ開放している。このフランジ片５ｄ，５ｅを縫着、接着、両面テープなどによりサポータ材６に連結する。この際、開放口が延出部３側となるようにする。   The bag-like body 5 includes a rectangular main piece 5a facing the supporter material 6, hanging pieces 5b and 5b hanging from a pair of short sides of the main piece 5a, and hanging from one long side of the main piece 5a. The hanging piece 5c and the flange pieces 5d and 5e projecting from the hanging pieces 5b and 5c are open only along the other long side. The flange pieces 5d and 5e are connected to the supporter material 6 by sewing, bonding, double-sided tape or the like. At this time, the opening is made to be on the extension part 3 side.

なおこの袋状体５は好ましくはフェルトよりなる。フェルトは発泡樹脂材料（例えば発泡ポリウレタンや発泡ポリスチレン、発泡ポリエチレン等）とのなじみがよく、またガス透過性に優れるので、袋状体５内にガスが残留することが防止される。   The bag 5 is preferably made of felt. The felt is well compatible with foamed resin materials (for example, foamed polyurethane, foamed polystyrene, foamed polyethylene, etc.) and is excellent in gas permeability, so that gas is prevented from remaining in the bag-like body 5.

このシートバックパッド１は、第２図に示す金型１０を用いて成形されたものである。   The seat back pad 1 is formed by using a mold 10 shown in FIG.

金型１０は、下型１１、上型１２及び中子１３によって構成されている。上型１２及び中子１３は、下型１１の一端側に対し、それぞれ支持軸（図示略）を介して開閉可能に連結されている。   The mold 10 includes a lower mold 11, an upper mold 12 and a core 13. The upper mold 12 and the core 13 are connected to one end side of the lower mold 11 through a support shaft (not shown) so as to be opened and closed.

キャビティは、主板部を成形する第１空間１５ａと、延出部を成形する第２空間１５ｂと、張出部を成形する第３空間１５ｃとを有する。   The cavity includes a first space 15a for forming the main plate portion, a second space 15b for forming the extension portion, and a third space 15c for forming the overhang portion.

この金型１０を用いてシートバックパッド１を成形するには、まず、型開きした状態で、第１空間２５ａ内に発泡樹脂原料としてのウレタン原液を注入する。また、中子２３の成形面上に、サポータ材（被覆シート）６を例えば両面テープによって張り付ける。なお、袋状体５は予めサポータ材６に逢着、接着等によって取り付けられている。従って、サポータ材６を中子２３に取り付けるだけで袋状体５も中子２３にセットされる。なお、前述の通り、袋状体の開放口は延出部３を指向する。この状態で中子１３及び上型１２を型閉めし、発泡樹脂原料を発泡させる。   In order to mold the seat back pad 1 using the mold 10, first, a urethane stock solution as a foamed resin material is injected into the first space 25a in a state where the mold is opened. Further, a supporter material (covering sheet) 6 is pasted on the molding surface of the core 23 with, for example, a double-sided tape. In addition, the bag-like body 5 is attached to the supporter material 6 in advance by adhesion, adhesion, or the like. Therefore, the bag-like body 5 is also set on the core 23 simply by attaching the supporter material 6 to the core 23. Note that, as described above, the opening of the bag-like body is directed to the extending portion 3. In this state, the core 13 and the upper mold 12 are closed to foam the foamed resin material.

第１空間１５ａ内のウレタン原液は、その発泡の進行に伴って、第１空間１５ａ、第２空間１５ｂ及び第３空間１５ｃをこの順に充填していく。キャビティ内のガスは、金型１０の合わせ面間から外部に排出される。   The urethane stock solution in the first space 15a fills the first space 15a, the second space 15b, and the third space 15c in this order as the foaming proceeds. The gas in the cavity is discharged to the outside from between the mating surfaces of the mold 10.

この実施の形態では、第３空間１５ｃの入口付近に袋状体５を延出部にのみ向けて開放するように配置しているので、第２空間１５ｂを上昇して第３空間１５ｃに入り込んできたウレタン発泡物がまず袋状体５で受け止められ、第３空間１５ｃ内に徐々に流入するようになる。これにより、第３空間１５ｃ内のガスがキャビティ末端部Ｃ付近の上型１２と中子１３との合わせ面（パーティングラインＰＬ）から十分に排出されるようになり、成形品にボイドが発生することが防止される。なお、このパーティングラインＰＬは袋状体５よりも先端側である。   In this embodiment, since the bag-like body 5 is disposed in the vicinity of the entrance of the third space 15c so as to open only toward the extending portion, the second space 15b is raised and enters the third space 15c. The produced urethane foam is first received by the bag-like body 5 and gradually flows into the third space 15c. As a result, the gas in the third space 15c is sufficiently discharged from the mating surface (parting line PL) between the upper mold 12 and the core 13 near the end C of the cavity, and voids are generated in the molded product. Is prevented. The parting line PL is on the tip side of the bag-like body 5.

この実施の形態では、袋状体５を、ウレタンが染み込み易いと共にガス透過性が良好なフェルトにて構成しているので、ボイド発生が防止される。   In this embodiment, since the bag-like body 5 is made of felt that is easy to penetrate urethane and has good gas permeability, generation of voids is prevented.

この実施の形態では、袋状体５をサポータ材６に予め取り付けてあるので、袋状体５及びサポータ材６を金型（中子１３）にセットする際の作業効率が高いと共に、中子１３に容易にフィットさせることができる。   In this embodiment, since the bag-like body 5 is attached to the supporter material 6 in advance, the working efficiency when the bag-like body 5 and the supporter material 6 are set in the mold (core 13) is high, and the core 13 can be easily fitted.

なお、袋状体５の張出方向の幅（第１図（ｃ）では略上下方向の長さ）Ｌは３０〜１５０ｍｍ特に４０〜５０ｍｍ程度が好適である。袋状体５の断面形状が三角形等である場合は、サポート材と接する基底部の幅をＬとする。   The width L of the bag-like body 5 in the protruding direction (the length in the substantially vertical direction in FIG. 1C) L is preferably about 30 to 150 mm, particularly about 40 to 50 mm. When the cross-sectional shape of the bag-like body 5 is a triangle or the like, the width of the base portion in contact with the support material is L.

袋状体５を設置した第３空間１５ｃの入口付近における袋状体５の高さ（厚さ）ｈ２と第３空間１５ｃの高さｈ１との差ｈ１−ｈ２は０＜（ｈ１−ｈ２）≦３０ｍｍ特に１５≦（ｈ１−ｈ２）≦２５ｍｍが好適である。 The difference h 1 -h 2 between the height (thickness) h 2 of the bag-like body 5 near the entrance of the third space 15 c where the bag-like body 5 is installed and the height h 1 of the third space 15 c is 0 <( h 1 −h 2 ) ≦ 30 mm, particularly 15 ≦ (h 1 −h 2 ) ≦ 25 mm is preferred.

袋状体５のシートパッド左右方向の長さは３０〜３００ｍｍ特に４０〜６０ｍｍ程度が好適である。   The length of the sheet pad 5 in the left-right direction of the seat pad is preferably about 30 to 300 mm, particularly about 40 to 60 mm.

なお、第２空間１５ｂから第３空間１５ｃに流入してくるウレタン発泡物の流入速度（体積速度）をＶ１とし、袋状体５の配置部分を通過するウレタン発泡物の体積速度をＶ２とした場合、Ｖ１とＶ２とがほぼ等しくなるように袋状体５の大きさ及び配置を設定することにより、第２空間１５ｂから第３空間１５ｃにまで押し込まれてきたエアなどのガスをウレタン発泡物が保持し易くなる。 Incidentally, the inflow rate of the urethane foam from the second space 15b come to flow into the third space 15c (volume rate) and V 1, V 2 the volume velocity of the urethane foam that passes through the arrangement portion of the bag-like body 5 In this case, by setting the size and arrangement of the bag-like body 5 so that V 1 and V 2 are substantially equal, a gas such as air that has been pushed from the second space 15b to the third space 15c. It becomes easy to hold the urethane foam.

袋状体５を省略すると、Ｖ１がＶ２よりも大きくなり、ウレタンが第３空間１５ｃに流入するときにウレタンが容積内に広がり、ウレタン発泡物がガスを保持し難くなる。更に、粘度が高くなっているところから、容積が急に大きくなると、ウレタン発泡物がガスを保持し難くなり、ウレタン充填が遅くなる。また、第３空間１５ｃの天井側にガスが残り、ボイド等の欠陥が生じる。 Omitting the bag-like body 5, greater than V 1 is V 2, urethane urethane spread within the volume when flowing into the third space 15c, urethane foam is less likely to retain the gas. Furthermore, since the viscosity is increased, if the volume suddenly increases, the urethane foam becomes difficult to hold the gas, and the urethane filling is delayed. Further, gas remains on the ceiling side of the third space 15c, and defects such as voids occur.

［その他の実施の形態］
袋状体としては、第４図に示すように側面形状が三角形となる袋状体５Ａであってもよい。この袋状体５Ａは、主片５ｆと、この主片５ｆの左右両端から垂下する垂下片５ｇと、垂下片５ｇから張り出すフランジ片５ｈと、主片５ｆから張り出すフランジ片５ｉとを有する。図示は省略するが、袋状体の側面形状は四分円形状や、台形、多角形などであってもよい。また、設置する数は１つとは限らず複数個設置する事もある。 [Other embodiments]
The bag-like body may be a bag-like body 5A having a triangular side surface as shown in FIG. The bag-like body 5A includes a main piece 5f, a hanging piece 5g that hangs down from the left and right ends of the main piece 5f, a flange piece 5h that protrudes from the hanging piece 5g, and a flange piece 5i that protrudes from the main piece 5f. . Although illustration is omitted, the side shape of the bag-like body may be a quadrant, a trapezoid, a polygon, or the like. Further, the number of installation is not limited to one, and a plurality may be installed.

本発明では、埋設体は図示以外の箇所に配置されてもよい。   In the present invention, the embedded body may be disposed at a place other than the figure.

本発明は、シートクッションパッドの成形に適用してもよい。   The present invention may be applied to the formation of a seat cushion pad.

第１図（ａ）は実施の形態に係る自動車前席用シートバックパッドの後方からの斜視図、第１図（ｂ）は同（ａ）のＢ−Ｂ線断面図、第１図（ｃ）は同（ｂ）の一部の拡大図である。FIG. 1 (a) is a perspective view from the back of a seat back pad for a front seat of an automobile according to the embodiment, FIG. 1 (b) is a sectional view taken along the line BB of FIG. 1 (a), and FIG. ) Is an enlarged view of a part of FIG. 第２図（ａ）はシートバックパッド成形用金型の一部の断面図、同（ｂ）は同（ａ）のＢ−Ｂ線断面図である。FIG. 2 (a) is a partial cross-sectional view of the seat back pad molding die, and FIG. 2 (b) is a cross-sectional view taken along the line BB of FIG. 2 (a). 袋状体の斜視図である。It is a perspective view of a bag-like body. 袋状体の別形状を示す斜視図である。It is a perspective view which shows another shape of a bag-shaped body. 従来例を示す金型の断面図である。It is sectional drawing of the metal mold | die which shows a prior art example. 従来例を示すシートバックパッドの一部の断面図である。It is sectional drawing of a part of seat back pad which shows a prior art example. 従来例を示す成形途中における金型の断面図である。It is sectional drawing of the metal mold | die in the middle of shaping | molding which shows a prior art example. 従来例を示すシートバックパッドの断面図である。It is sectional drawing of the seat back pad which shows a prior art example.

符号の説明Explanation of symbols

１，３０ シートバックパッド
２，３１ 主板部
３，３２ 延出部
４，３３ 張出部
５，５Ａ 袋状体
２７ 埋設体
１０，２０ 金型
１１，２１ 下型
１２，２２ 上型
１３，２３ 中子 DESCRIPTION OF SYMBOLS 1,30 Seat back pad 2,31 Main plate part 3,32 Extension part 4,33 Overhang part 5,5A Bag-shaped body 27 Embedded body 10,20 Mold 11,21 Lower mold 12,22 Upper mold 13,23 Core

Claims (7)

乗員当接面を有した発泡樹脂よりなる主板部と、該主板部の少なくとも一部の周縁から乗員当接面と反対方向へ延出した発泡樹脂よりなる延出部と、該延出部から主板部の裏面の中央側へ張り出す発泡樹脂よりなる張出部とを有し、
該主板部、延出部及び張出部が一体に発泡成形され、該張出部の主板部側に埋設体が設けられている車両用シートパッドにおいて、
該埋設体は、該張出部を構成する発泡樹脂が内部に充填された袋状体よりなることを特徴とする車両用シートパッド。 A main plate portion made of foamed resin having an occupant contact surface, an extended portion made of foamed resin extending in a direction opposite to the occupant contact surface from at least a part of the periphery of the main plate portion, and the extended portion Having a projecting part made of foamed resin that projects to the center side of the back surface of the main plate part,
In the vehicle seat pad in which the main plate portion, the extension portion and the overhang portion are integrally foam-molded, and an embedded body is provided on the main plate portion side of the overhang portion,
The vehicle seat pad, wherein the embedded body is formed of a bag-like body filled with a foamed resin constituting the overhanging portion. 請求項１において、該埋設体は、該張出部の張出方向と交差方向に延設されると共に、前記延出部に向かって開放していることを特徴とする車両用シートパッド。   The vehicle seat pad according to claim 1, wherein the embedded body extends in a direction intersecting with an extending direction of the protruding portion and is open toward the extending portion. 請求項１又は２において、該車両用シートパッドの裏面にシート状のサポータ材が設けられており、前記袋状体は該サポータ材に連結されていることを特徴とする車両用シートパッド。   3. The vehicle seat pad according to claim 1, wherein a sheet-like supporter material is provided on a back surface of the vehicle seatpad, and the bag-like body is connected to the supporter material. 請求項３において、該袋状体は、サポータ材と対向する主片と、該主片の周縁から前記サポータ材に向って垂下する垂下片とを有していることを特徴とする車両用シートパッド。   4. The vehicle seat according to claim 3, wherein the bag-like body includes a main piece facing the supporter material and a hanging piece hanging from the peripheral edge of the main piece toward the supporter material. pad. 請求項１ないし４のいずれか１項において、前記袋状体はフェルトよりなることを特徴とする車両用シートパッド。   The vehicle seat pad according to any one of claims 1 to 4, wherein the bag-like body is made of felt. 請求項１ないし５のいずれか１項において、該車両用シートパッドは前席用シートバックパッドであることを特徴とする車両用シートパッド。   6. The vehicle seat pad according to claim 1, wherein the vehicle seat pad is a front seat back pad. 請求項１ないし６のいずれか１項の車両用シートパッドを成形する方法であって、金型内に前記袋状体を配置して発泡成形することを特徴とする車両用シートパッドの成形方法。   A method for molding a vehicle seat pad according to any one of claims 1 to 6, wherein the bag-like body is placed in a mold and foam molding is performed. .
JP2008189899A 2008-07-23 2008-07-23 Vehicle seat pad and method of forming the same Expired - Fee Related JP5320882B2 (en)

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JP2008023084A (en) * 2006-07-21 2008-02-07 Inoac Corp Vehicle seat back pad and method of manufacturing the same
JP2008307834A (en) * 2007-06-15 2008-12-25 Tokai Kogyo Co Ltd Manufacturing method of cushioning body

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JP2008023084A (en) * 2006-07-21 2008-02-07 Inoac Corp Vehicle seat back pad and method of manufacturing the same
JP2008307834A (en) * 2007-06-15 2008-12-25 Tokai Kogyo Co Ltd Manufacturing method of cushioning body

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JPWO2019087647A1 (en) * 2017-10-31 2020-11-12 株式会社ブリヂストン Foam molded product, manufacturing method of foam molded product and molding structure of foam molded product
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