JP6873734B2 - Ducted seat pad and its manufacturing method - Google Patents

Ducted seat pad and its manufacturing method Download PDF

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JP6873734B2
JP6873734B2 JP2017030854A JP2017030854A JP6873734B2 JP 6873734 B2 JP6873734 B2 JP 6873734B2 JP 2017030854 A JP2017030854 A JP 2017030854A JP 2017030854 A JP2017030854 A JP 2017030854A JP 6873734 B2 JP6873734 B2 JP 6873734B2
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duct
lower mold
outlet
seat pad
protrusion
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JP2018134798A (en
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佳宏 犬飼
佳宏 犬飼
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Inoac Corp
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Inoac Corp
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  • Moulds For Moulding Plastics Or The Like (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Molding Of Porous Articles (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)
  • Seats For Vehicles (AREA)

Description

本発明は、シートパッド内にダクトが埋設されたダクト入りシートパッド及びその製造方法に関する。 The present invention relates to a ducted seat pad in which a duct is embedded in the seat pad and a method for manufacturing the same.

特許文献１に示されるダクト入りシートパッドの製造方法では、発泡成形金型の下型にダクトをセットして、ダクトの吹出口を下型の成形面から突出する下型突部にて閉塞する。そして、下型に発泡樹脂原料を注入してから発泡成形金型を型閉じして、発泡樹脂原料を発泡させる。 In the method for manufacturing a seat pad with a duct shown in Patent Document 1, the duct is set in the lower mold of the foam molding mold, and the outlet of the duct is closed by the lower mold protrusion protruding from the molding surface of the lower mold. .. Then, after injecting the foamed resin raw material into the lower mold, the foam molding mold is closed to foam the foamed resin raw material.

特許第５６３７５５６号（段落［００２２］〜［００２６］、［００２８］、図５，６）Japanese Patent No. 5637556 (paragraphs [0022] to [0026], [0028], FIGS. 5 and 6)

ところで、近年、ダクトの軽量化を図るために、ダクトを発泡シートや不織布等のシート材から形成することが提案されている。しかしながら、シート材から形成されたダクトは剛性が低いため、そのダクトを特許文献１に示されたダクト入りシートパッドの製造方法に用いると、発泡樹脂原料の発泡圧によって下型にセットされたダクトが浮き上がり、吹出口からダクト内に発泡樹脂が入り込むという問題があった。 By the way, in recent years, in order to reduce the weight of the duct, it has been proposed to form the duct from a sheet material such as a foam sheet or a non-woven fabric. However, since the duct formed from the sheet material has low rigidity, when the duct is used in the method for manufacturing the ducted seat pad shown in Patent Document 1, the duct set in the lower mold by the foaming pressure of the foamed resin raw material. There was a problem that the foamed resin entered the duct from the air outlet.

本発明は、上記事情に鑑みてなされたもので、シート材から形成されたダクトの浮き上がりを抑制することが可能なダクト入りシートパッド及びその製造方法の提供を目的とする。 The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a ducted seat pad capable of suppressing the floating of a duct formed of a sheet material and a method for manufacturing the same.

上記目的を達成するためになされた発明の第１態様は、発泡成形金型における下型の成形面から突出する下型突部をダクトの吹出口に挿通させて前記ダクトを前記下型にセットすると共に前記下型突部にて前記吹出口を塞ぎ、前記発泡成形金型に発泡樹脂原料を注入して発泡させるダクト入りシートパッドの製造方法であって、前記ダクトは、シート材から形成され、前記下型突部の一部をマグネットで構成しておくと共に、前記ダクトのうち前記ダクトが前記下型にセットされるときに前記下型突部の前記マグネットと対向する部分に、磁性部材を取り付けておき、前記ダクトを前記下型にセットするときに、前記ダクトの前記磁性部材と前記下型突部の前記マグネットを磁気結合させるダクト入りシートパッドの製造方法である。In the first aspect of the invention made to achieve the above object, the lower mold protrusion protruding from the molding surface of the lower mold in the foam molding mold is inserted into the air outlet of the duct, and the duct is set in the lower mold. This is a method for manufacturing a ducted seat pad in which the air outlet is closed by the lower mold protrusion and the foamed resin raw material is injected into the foam molding mold to foam the duct. The duct is formed of a sheet material. A part of the lower mold protrusion is formed of a magnet, and a magnetic member is formed on a portion of the duct facing the magnet when the duct is set in the lower mold. This is a method for manufacturing a ducted seat pad that magnetically couples the magnetic member of the duct and the magnet of the lower die protrusion when the duct is set in the lower mold.

発明の第２態様は、第１態様に記載のダクト入りシートパッドの製造方法において、前記磁性部材を、前記ダクトの外面に取り付けるダクト入りシートパッドの製造方法である。A second aspect of the invention is the method for manufacturing a ducted seat pad according to the first aspect, wherein the magnetic member is attached to the outer surface of the duct.

発明の第３態様は、第１又は第２態様に記載のダクト入りシートパッドの製造方法において、前記マグネットを前記下型突部の突出方向の先端部に埋設し、前記磁性部材を前記ダクトのうち前記吹出口の軸方向で前記吹出口と重なる部位に取り付けておくと共に、前記下型突部の外周面に環状溝を形成しておき、前記下型に前記ダクトをセットするにあたり、前記下型突部を前記吹出口に突入させて前記マグネットと前記磁性部材を磁気結合させると共に、前記吹出口の開口縁を前記環状溝に係合させるダクト入りシートパッドの製造方法である。A third aspect of the present invention is the method for manufacturing a ducted seat pad according to the first or second aspect, in which the magnet is embedded in the tip of the lower mold protrusion in the protruding direction, and the magnetic member is formed in the duct. Of these, when the duct is set in the lower mold by attaching it to a portion overlapping the outlet in the axial direction of the outlet and forming an annular groove on the outer peripheral surface of the lower mold protrusion, the lower mold is used. This is a method for manufacturing a ducted seat pad in which a mold protrusion is inserted into the outlet to magnetically couple the magnet and the magnetic member, and the opening edge of the outlet is engaged with the annular groove.

発明の第４態様は、第１又は第２態様に記載のダクト入りシートパッドの製造方法において、前記磁性部材を、前記吹出口を囲むように取り付けておくと共に、前記下型突部に基端側を段付き状に拡径する段差を設けて、その段差より基端側に配される大径部の先端部位を前記マグネットで構成しておき、前記ダクトを前記下型にセットするにあたり、前記下型突部のうち前記段差より先端側に配される小径部を前記吹出口に突入させ、前記大径部を前記吹出口の開口縁に当接させて前記マグネットと前記磁性部材を磁気結合させるダクト入りシートパッドの製造方法である。A fourth aspect of the present invention is the method for manufacturing a ducted seat pad according to the first or second aspect, wherein the magnetic member is attached so as to surround the air outlet, and the base end is attached to the lower mold protrusion. When a step is provided to expand the diameter in a stepped manner on the side, the tip portion of the large diameter portion arranged on the base end side from the step is configured by the magnet, and the duct is set in the lower mold. The small diameter portion of the lower die projecting portion arranged on the tip side of the step is plunged into the air outlet, and the large diameter portion is brought into contact with the opening edge of the air outlet to magnetically contact the magnet and the magnetic member. This is a method for manufacturing a seat pad with a duct to be connected.

発明の第５態様は、シートパッド内にダクトが埋設されたダクト入りシートパッドにおいて、前記ダクトは、シート材から形成され、前記ダクトのうち吹出口を囲む部分又は前記吹出口の軸方向で前記吹出口と重なる部位に磁性部材が取り付けられているダクト入りシートパッドである。A fifth aspect of the present invention is a ducted seat pad in which a duct is embedded in the seat pad. The duct is formed of a sheet material, and the duct is formed from a sheet material and is said to be in a portion of the duct surrounding the air outlet or in the axial direction of the air outlet. It is a seat pad with a duct in which a magnetic member is attached to the part that overlaps with the air outlet.

発明の第６態様は、第５態様に記載のダクト入りシートパッドにおいて、前記磁性部材は、前記ダクトの外面に取り付けられているダクト入りシートパッドである。A sixth aspect of the present invention is the ducted seat pad according to the fifth aspect, wherein the magnetic member is a ducted seat pad attached to the outer surface of the duct.

［発明の第１、第５態様］
本態様では、発泡成形金型の下型の成形面から突出する下型突部の一部をマグネットで構成することで、ダクトを下型にセットするときに、ダクトに取り付けた磁性部材をマグネットに磁気結合させることが可能となる。これにより、ダクトの下型への固定の安定化が図られ、シート材から形成されたダクトの浮き上がりが抑制される。 [First and fifth aspects of the invention]
In this embodiment , a part of the lower mold protrusion protruding from the molding surface of the lower mold of the foam molding mold is formed of a magnet, so that when the duct is set in the lower mold, the magnetic member attached to the duct is magnetized. Can be magnetically coupled to. As a result, the fixation of the duct to the lower mold is stabilized, and the floating of the duct formed from the sheet material is suppressed.

［発明の第２、第６態様］
本態様によれば、磁性部材がダクト内を通過する気体の通気抵抗となることが抑制される。 [Second and sixth aspects of the invention]
According to this aspect , it is suppressed that the magnetic member becomes a ventilation resistance of the gas passing through the duct.

［発明の第３態様］
本態様では、下型突部のマグネットと環状溝でダクトを固定することが可能となる。即ち、１つの下型突部につき、ダクトの２箇所を固定することが可能となる。これにより、下型突部によるダクトの固定の安定化が図られる。 [Third aspect of the invention]
In this embodiment , the duct can be fixed by the magnet of the lower die protrusion and the annular groove. That is, it is possible to fix two places of the duct for one lower mold protrusion. As a result, the fixation of the duct by the lower die protrusion is stabilized.

［発明の第４態様］
本態様では、マグネットと磁性部材の磁気結合によって、ダクトの下型への固定と吹出口の閉塞の両方を達成可能となる。 [Fourth aspect of the invention]
In this embodiment , the magnetic coupling between the magnet and the magnetic member makes it possible to achieve both fixation of the duct to the lower mold and closure of the air outlet.

本発明の第１実施形態に係るダクト入りシートパッドの平面図Top view of the ducted seat pad according to the first embodiment of the present invention. ダクト入りシートパッドの断面図Sectional view of ducted seat pad ダクト入りシートパッドのＡ−Ａ断面図AA sectional view of a seat pad with a duct ダクトの製造工程を示す断面図Cross-sectional view showing the manufacturing process of the duct ダクト入りシートパッドの製造工程を示す断面図Sectional drawing which shows the manufacturing process of the seat pad with a duct ダクト入りシートパッドの製造工程を示す断面図Sectional drawing which shows the manufacturing process of the seat pad with a duct ダクト入りシートパッドの製造工程を示す断面図Sectional drawing which shows the manufacturing process of the seat pad with a duct ダクト入りシートパッドの製造工程を示す断面図Sectional drawing which shows the manufacturing process of the seat pad with a duct 第２実施形態に係るダクト入りシートパッドの断面図Sectional drawing of the seat pad with duct which concerns on 2nd Embodiment ダクト及び下型突部の断面図Sectional view of duct and lower mold protrusion 他の実施形態に係るダクト及び下型突部の断面図Cross-sectional view of the duct and the lower die protrusion according to another embodiment

［第１実施形態］
以下、本発明の第１実施形態を図面に基づいて説明する。図１，２に示されるように、本実施形態のダクト入りシートパッド１０は、例えば、車両用シートの背もたれ部に用いられるバックパッドや着座部に用いられるクッションパッドであって、シートパッド１１にダクト２０を内蔵した構造になっている。本実施形態では、ダクト入りシートパッド１０をクッションパッドに適用した例について説明する。 [First Embodiment]
Hereinafter, the first embodiment of the present invention will be described with reference to the drawings. As shown in FIGS. 1 and 2, the ducted seat pad 10 of the present embodiment is, for example, a back pad used for the backrest portion of a vehicle seat and a cushion pad used for a seating portion, and is formed on the seat pad 11. It has a structure with a built-in duct 20. In this embodiment, an example in which the ducted seat pad 10 is applied to the cushion pad will be described.

図１，２に示されるように、ダクト２０は、シートパッド１１の左右方向に延びる横辺部２１と、横辺部２１の両端部の各々から２股に分岐してシートパッド１１の前後方向に延びる１対の縦辺部２２，２２と、を有している。ダクト２０は、シートパッド１１の下面寄り位置に埋設されている（図２参照）。ダクト２０の横辺部２１の中央部からは、後方に向かって空気導入部２３が張り出している。そして、空気導入部２３の下面には、導入口２４が形成されている。また、ダクト２０の横辺部２１及び縦辺部２２の上面には、複数の吹出口２５が形成されている。導入口２４は、ダクト２０内に空気を導入するためのものであり、吹出口２５は、ダクト２０内の空気を排出するためのものである。 As shown in FIGS. 1 and 2, the duct 20 is bifurcated from each of the lateral side portion 21 extending in the left-right direction of the seat pad 11 and both end portions of the lateral side portion 21 in the front-rear direction of the seat pad 11. It has a pair of vertical side portions 22 and 22 extending to. The duct 20 is embedded at a position closer to the lower surface of the seat pad 11 (see FIG. 2). An air introduction portion 23 projects rearward from the central portion of the lateral side portion 21 of the duct 20. An introduction port 24 is formed on the lower surface of the air introduction portion 23. Further, a plurality of outlets 25 are formed on the upper surfaces of the horizontal side portion 21 and the vertical side portion 22 of the duct 20. The introduction port 24 is for introducing air into the duct 20, and the outlet 25 is for discharging the air in the duct 20.

図３に示されるように、ダクト２０は、溝形状に成形された１対のシート材３０，３０を接合してなる。溝形状に成形された１対のシート材３０，３０は、溝開口が突き合わされるように配置されて、その溝開口の縁部同士が接合されている。各シート材３０は、単層構造をなしていてもよいし、積層構造をなしていてもよい。本実施形態の例では、シート材３０は、積層構造をなし、独立気泡構造の発泡体からなる内側層３１と、連続気泡構造の発泡体又は不織布からなる外側層３２とから構成されている。 As shown in FIG. 3, the duct 20 is formed by joining a pair of sheet materials 30 and 30 formed in a groove shape. The pair of sheet materials 30, 30 formed in a groove shape are arranged so that the groove openings are butted against each other, and the edges of the groove openings are joined to each other. Each sheet material 30 may have a single-layer structure or a laminated structure. In the example of the present embodiment, the sheet material 30 has a laminated structure and is composed of an inner layer 31 made of a closed cell structure foam and an outer layer 32 made of an open cell structure foam or a non-woven fabric.

ダクト２０の底壁２０Ｂの外面には、磁性部材２７が取り付けられている。磁性部材２７は、例えば、フェライトシートで構成され、接着剤によって底壁２０Ｂの外面に固定されている。また、磁性部材２７は、吹出口２５の軸方向で吹出口２５に重ねて配置されている。 A magnetic member 27 is attached to the outer surface of the bottom wall 20B of the duct 20. The magnetic member 27 is made of, for example, a ferrite sheet and is fixed to the outer surface of the bottom wall 20B by an adhesive. Further, the magnetic member 27 is arranged so as to overlap the outlet 25 in the axial direction of the outlet 25.

図１，２に示されるように、シートパッド１１は、例えば、ポリウレタン等の発泡樹脂からなり、ダクト入りシートパッド１０の主要部を構成する。シートパッド１１の上面には、ダクト２０の吹出口２５に連通する複数の通気凹部１２が設けられている。そして、ダクトの吹出口２５から排出された空気が通気凹部１２から送給される。 As shown in FIGS. 1 and 2, the seat pad 11 is made of, for example, a foamed resin such as polyurethane, and constitutes a main part of the ducted seat pad 10. On the upper surface of the seat pad 11, a plurality of ventilation recesses 12 communicating with the air outlet 25 of the duct 20 are provided. Then, the air discharged from the outlet 25 of the duct is supplied from the ventilation recess 12.

次に、ダクト入りシートパッド１０の製造方法について説明する。ダクト入りシートパッド１０の製造にあたっては、まず、ダクト２０が製造される。ダクト２０の製造にあたっては、まず、図４（Ａ）に示されるように、溝形状に成形された１対のシート材３０，３０が準備される。シート材３０の溝形状への成形は、真空成形や圧空成形、熱プレス成形によって行われる。溝形状に成形された１対のシート材３０，３０のうち一方のシート材３０における溝底の所定部位には、開口３０Ａが形成されている。図４（Ｂ）に示されるように、溝形状の１対のシート材３０，３０における溝開口の縁部同士が接合され、ダクト２０が完成する。このとき、一方のシート材３０の開口３０Ａによってダクト２０の吹出口２５が形成され、他方のシート材３０によってダクト２０の底壁２０Ｂが形成される。そして、ダクト２０の底壁２０Ｂの外面のうち吹出口２５と重なる部分に、磁性部材２７が貼り付けられる。 Next, a method of manufacturing the ducted seat pad 10 will be described. In manufacturing the seat pad 10 with a duct, first, the duct 20 is manufactured. In manufacturing the duct 20, first, as shown in FIG. 4A, a pair of sheet materials 30 and 30 formed in a groove shape are prepared. The sheet material 30 is formed into a groove shape by vacuum forming, compressed air forming, or hot press forming. An opening 30A is formed at a predetermined portion of the groove bottom of one of the pair of sheet materials 30 and 30 formed into a groove shape. As shown in FIG. 4B, the edges of the groove openings in the groove-shaped pair of sheet materials 30 and 30 are joined to each other to complete the duct 20. At this time, the outlet 25 of the duct 20 is formed by the opening 30A of one sheet material 30, and the bottom wall 20B of the duct 20 is formed by the other sheet material 30. Then, the magnetic member 27 is attached to the portion of the outer surface of the bottom wall 20B of the duct 20 that overlaps with the air outlet 25.

ダクト２０が完成すると、図５に示されるように、ダクト２０が発泡成形金型４０にセットされる。発泡成形金型４０は、上型４１と下型４２とからなり、ダクト２０は、下型４２にセットされる。具体的には、下型４２には、発泡成形金型４０のキャビティ４０Ｃ（図７）の一部を構成する成形凹部４２Ａが形成され、その成形凹部４２Ａの内面が成形面４２Ｍとなっている。下型４２の成形面４２Ｍからは、ダクト２０の吹出口２５に対応した複数の下型突部４３が突出している。そして、ダクト２０の吹出口２５が下型突部４３と嵌合することによりダクト２０が下型４２に位置決めされ、吹出口２５が下型突部４３によって塞がれる。なお、ダクト２０の導入口２４は、蓋部材２４Ａによって塞がれる。 When the duct 20 is completed, the duct 20 is set in the foam molding die 40 as shown in FIG. The foam molding die 40 is composed of an upper die 41 and a lower die 42, and the duct 20 is set in the lower die 42. Specifically, the lower mold 42 is formed with a molding recess 42A forming a part of the cavity 40C (FIG. 7) of the foam molding die 40, and the inner surface of the molding recess 42A is a molding surface 42M. .. A plurality of lower die protrusions 43 corresponding to the outlet 25 of the duct 20 project from the molding surface 42M of the lower die 42. Then, the duct 20 is positioned on the lower mold 42 by fitting the outlet 25 of the duct 20 with the lower mold protrusion 43, and the outlet 25 is closed by the lower mold protrusion 43. The introduction port 24 of the duct 20 is closed by the lid member 24A.

詳細には、図６に示されるように、下型突部４３には、基端側を段付き状に拡径する段差４３Ｄが設けられている。そして、下型突部４３のうち段差４３Ｄより基端側に配される大径部４３Ａが吹出口２５の開口縁に突き当てられると共に、下型突部４３のうち段差４３Ｄより先端側に配される小径部４３Ｂが吹出口２５に突入する。なお、小径部４３Ｂは、先端側へ向かうにつれて縮径されるドーム状をなしている。 More specifically, as shown in FIG. 6, the lower die projecting portion 43 is provided with a step 43D that expands the diameter of the base end side in a stepped manner. Then, the large diameter portion 43A arranged on the base end side of the lower mold protrusion 43 from the step 43D is abutted against the opening edge of the air outlet 25, and is arranged on the tip side of the lower mold protrusion 43 on the tip side of the step 43D. The small diameter portion 43B to be formed rushes into the air outlet 25. The small diameter portion 43B has a dome shape in which the diameter is reduced toward the tip side.

ここで、下型突部４３の先端部は、マグネット４４で構成されている。そして、マグネット４４がダクト２０の磁性部材２７と磁気結合する。なお、マグネット４４は、下型突部４３の先端部に形成された先端凹部４４Ａに埋設されている。 Here, the tip of the lower die protrusion 43 is composed of a magnet 44. Then, the magnet 44 magnetically couples with the magnetic member 27 of the duct 20. The magnet 44 is embedded in the tip recess 44A formed at the tip of the lower die protrusion 43.

また、下型突部４３の外周面（詳細には、小径部４３Ｂにおける大径部４３Ａ側の端部の外周面）には、環状溝４５が形成されていて、この環状溝４５と吹出口２５の開口縁とが係合する。なお、下型突部４３は、環状溝４５が形成されていない構成であってもよい。 Further, an annular groove 45 is formed on the outer peripheral surface of the lower die protrusion 43 (specifically, the outer peripheral surface of the end portion of the small diameter portion 43B on the large diameter portion 43A side), and the annular groove 45 and the air outlet are formed. Engage with 25 open edges. The lower die protrusion 43 may have a configuration in which the annular groove 45 is not formed.

ダクト２０が下型４２にセットされると、図７に示されるように、下型４２の成形凹部４２Ａに発泡樹脂原料５０が注入されて、発泡成形金型４０が型閉じされる。次いで、図８に示されるように、発泡樹脂原料５０が発泡成形されてシートパッド１１が形成される。そして、発泡成形金型４０から成形体が外されると、ダクト入りシートパッド１０（図２）が完成する。 When the duct 20 is set in the lower mold 42, the foamed resin raw material 50 is injected into the molding recess 42A of the lower mold 42, and the foam molding mold 40 is closed. Next, as shown in FIG. 8, the foamed resin raw material 50 is foam-molded to form the seat pad 11. Then, when the molded body is removed from the foam molding die 40, the ducted seat pad 10 (FIG. 2) is completed.

本実施形態のダクト入りシートパッド１０の構成及び製造方法の説明は以上である。次に、本実施形態の作用効果について説明する。 The configuration and manufacturing method of the ducted seat pad 10 of the present embodiment have been described above. Next, the action and effect of this embodiment will be described.

本実施形態では、発泡成形金型４０の下型４２の成形面４２Ｍから突出する下型突部４３の一部をマグネット４４で構成することで、下型突部４３にてダクト２０の吹出口２５を塞ぐときに、ダクト２０に取り付けた磁性部材２７をマグネット４４に磁気結合させることができる。これにより、ダクト２０の下型４２への固定の安定化が図られ、シート材３０から形成されたダクト２０の浮き上がりが抑制される。そして、ダクト２０の吹出口２５からダクト２０内に発泡樹脂原料５０が入り込むことを防止することが可能となる。しかも、本実施形態では、磁性部材２７がダクト２０の外面に取り付けられているので、磁性部材２７がダクト２０内を通過する気体の通気抵抗となることが抑制される。 In the present embodiment, by forming a part of the lower mold protrusion 43 protruding from the molding surface 42M of the lower mold 42 of the foam molding mold 40 with the magnet 44, the outlet of the duct 20 is formed at the lower mold protrusion 43. When the 25 is closed, the magnetic member 27 attached to the duct 20 can be magnetically coupled to the magnet 44. As a result, the fixation of the duct 20 to the lower mold 42 is stabilized, and the floating of the duct 20 formed from the sheet material 30 is suppressed. Then, it is possible to prevent the foamed resin raw material 50 from entering the duct 20 from the outlet 25 of the duct 20. Moreover, in the present embodiment, since the magnetic member 27 is attached to the outer surface of the duct 20, it is suppressed that the magnetic member 27 becomes a ventilation resistance of the gas passing through the duct 20.

また、本実施形態では、下型突部４３のマグネット４４と環状溝４５でダクト２０を固定することが可能となる。即ち、本実施形態では、１つの下型突部４３につき、ダクト２０の２箇所を固定することが可能となる。これにより、下型突部４３によるダクト２０の固定の安定化が図られる。 Further, in the present embodiment, the duct 20 can be fixed by the magnet 44 of the lower die protrusion 43 and the annular groove 45. That is, in the present embodiment, it is possible to fix two places of the duct 20 with respect to one lower die protrusion 43. As a result, the fixation of the duct 20 by the lower die protrusion 43 is stabilized.

［第２実施形態］
以下、本発明の第２実施形態を図面に基づいて説明する。本実施形態は、ダクト２０における磁性部材２７の配置及び下型突部４３におけるマグネット４４の配置が上記第１実施形態と異なっている。具体的には、図９に示されるように、本実施形態では、磁性部材２７がダクト２０の吹出口２５の開口縁に取り付けられている。また、図１０に示されるように、マグネット４４は、下型突部４３における大径部４３Ａの先端部位を構成する。 [Second Embodiment]
Hereinafter, a second embodiment of the present invention will be described with reference to the drawings. In this embodiment, the arrangement of the magnetic member 27 in the duct 20 and the arrangement of the magnet 44 in the lower die protrusion 43 are different from those in the first embodiment. Specifically, as shown in FIG. 9, in the present embodiment, the magnetic member 27 is attached to the opening edge of the outlet 25 of the duct 20. Further, as shown in FIG. 10, the magnet 44 constitutes the tip portion of the large diameter portion 43A in the lower mold protrusion 43.

なお、詳細には、下型突部４３は、下型４２の成形面４２Ｍから突出する第１突部構成体４７に、マグネット４４と、第２突部構成体４８を固定してなる。第１突部構成体４７の先端面には、固定凹部４７Ａが設けられている。また、第２突部構成体４８は、下型突部４３の小径部４３Ｂを構成する本体部４８Ｈから基端側に突起４８Ｔが突出した構造になっている。そして、突起４８Ｔが固定凹部４７Ａに受容された状態で、第２突部構成体４８が第１突部構成体４７に固定される。マグネット４４は、環状に形成されて突起４８Ｔと嵌合し、第２突部構成体４８の本体部４８Ｈと第１突部構成体４７とに挟まれる。そして、第１突部構成体４７とマグネット４４とにより下型突部４３の大径部４３Ａが構成され、マグネット４４が大径部４３Ａの先端部位を構成する。なお、上記第１実施形態のように、下型突部４３に環状溝４５を設けてもよい。 More specifically, the lower mold protrusion 43 is formed by fixing the magnet 44 and the second protrusion component 48 to the first protrusion component 47 protruding from the molding surface 42M of the lower mold 42. A fixing recess 47A is provided on the tip surface of the first protrusion structure 47. Further, the second protrusion component 48 has a structure in which the protrusion 48T protrudes from the main body portion 48H constituting the small diameter portion 43B of the lower mold protrusion 43 toward the base end side. Then, the second protrusion constituent 48 is fixed to the first protrusion 47 in a state where the protrusion 48T is received by the fixing recess 47A. The magnet 44 is formed in an annular shape, fits with the protrusion 48T, and is sandwiched between the main body portion 48H of the second protrusion component 48 and the first protrusion component 47. Then, the large-diameter portion 43A of the lower mold protrusion 43 is formed by the first protrusion component 47 and the magnet 44, and the magnet 44 constitutes the tip portion of the large-diameter portion 43A. An annular groove 45 may be provided in the lower die protrusion 43 as in the first embodiment.

本実施形態では、上記第１実施形態と同様にして、ダクト２０が製造される。ここで、本実施形態では、ダクト２０の吹出口２５の開口縁に、磁性部材２７が取付けられる。そして、ダクト２０を下型４２にセットするにあたって、下型突部４３の小径部４３Ｂをダクト２０の吹出口２５に突入させると共に、下型突部４３の大径部４３Ａを吹出口２５の開口縁に当接させて、マグネット４４と磁性部材２７を磁気結合させる。 In the present embodiment, the duct 20 is manufactured in the same manner as in the first embodiment. Here, in the present embodiment, the magnetic member 27 is attached to the opening edge of the outlet 25 of the duct 20. Then, when the duct 20 is set in the lower mold 42, the small diameter portion 43B of the lower mold protrusion 43 is inserted into the outlet 25 of the duct 20, and the large diameter portion 43A of the lower mold protrusion 43 is opened in the outlet 25. The magnet 44 and the magnetic member 27 are magnetically coupled by abutting against the edge.

本実施形態によれば、上記第１実施形態と同様の効果を奏することが可能となる。また、本実施形態によれば、マグネット４４と磁性部材２７の磁気結合によって、ダクト２０の下型４２への固定と吹出口２５の閉塞の両方を達成可能となる。 According to this embodiment, it is possible to obtain the same effect as that of the first embodiment. Further, according to the present embodiment, both the fixing of the duct 20 to the lower mold 42 and the closing of the air outlet 25 can be achieved by the magnetic coupling between the magnet 44 and the magnetic member 27.

［他の実施形態］
本発明は、上記実施形態に限定されるものではなく、例えば、以下に説明するような実施形態も本発明の技術的範囲に含まれ、さらに、下記以外にも要旨を逸脱しない範囲内で種々変更して実施することができる。 [Other Embodiments]
The present invention is not limited to the above embodiments, and for example, embodiments as described below are also included in the technical scope of the present invention, and various other than the following, as long as they do not deviate from the gist. It can be changed and implemented.

（１）上記第１実施形態において、図１１に示されるように、ダクト２０のうち吹出口２５の軸方向で吹出口２５と重なる部分に、貫通孔２９が形成されていてもよい。この場合、磁性部材２７は、貫通孔２９を全体的に又は部分的に覆うようにダクト２０に取り付けられる。そして、ダクト２０を下型４２にセットするにあたって、下型突部４３の小径部４３Ｂをダクト２０の吹出口２５に突入させ、下型突部４３の先端部と磁性部材２７を当接させてマグネット４４と磁性部材２７を磁気結合させる。本実施形態では、貫通孔２９が設けられているので、シート材３０を介してマグネット４４と磁性部材２７とが磁気結合することが困難なほどシート材３０が厚い場合でも、マグネット４４と磁性部材２７とを容易に磁気結合させることができる。なお、貫通孔２９が磁性部材２７によって部分的に覆われる場合には、シートパッド１１を形成するにあたり、貫通孔２９を塞ぐための蓋部材をダクト２０に取り付ければよい。 (1) In the first embodiment, as shown in FIG. 11, a through hole 29 may be formed in a portion of the duct 20 that overlaps with the air outlet 25 in the axial direction of the air outlet 25. In this case, the magnetic member 27 is attached to the duct 20 so as to completely or partially cover the through hole 29. Then, when the duct 20 is set in the lower mold 42, the small diameter portion 43B of the lower mold protrusion 43 is pushed into the outlet 25 of the duct 20, and the tip portion of the lower mold protrusion 43 is brought into contact with the magnetic member 27. The magnet 44 and the magnetic member 27 are magnetically coupled. In the present embodiment, since the through hole 29 is provided, even if the sheet material 30 is so thick that it is difficult to magnetically bond the magnet 44 and the magnetic member 27 via the sheet material 30, the magnet 44 and the magnetic member 27 can be easily magnetically coupled. When the through hole 29 is partially covered by the magnetic member 27, a lid member for closing the through hole 29 may be attached to the duct 20 when forming the seat pad 11.

（２）上記実施形態では、磁性部材２７が、ダクト２０の外面に取り付けられていたが、ダクト２０の内面に取り付けられていてもよい。なお、上記実施形態のように、磁性部材２７がダクト２０の外面に取り付けられる場合、磁性部材２７がダクト２０内を通過する気体の通気抵抗となることが抑制される。 (2) In the above embodiment, the magnetic member 27 is attached to the outer surface of the duct 20, but may be attached to the inner surface of the duct 20. When the magnetic member 27 is attached to the outer surface of the duct 20 as in the above embodiment, it is suppressed that the magnetic member 27 becomes a ventilation resistance of the gas passing through the duct 20.

（３）上記第２実施形態において、さらに、上記第１実施形態のように、下型突部４３の先端部に設けられたマグネット４４と、ダクト２０のうち吹出口２５の軸方向で吹出口２５と重なる部位に取り付けられた磁性部材２７と、が備えられてもよい。 (3) In the second embodiment, as in the first embodiment, the magnet 44 provided at the tip of the lower die protrusion 43 and the outlet 25 of the duct 20 in the axial direction. A magnetic member 27 attached to a portion overlapping the 25 may be provided.

（４）上記第２実施形態では、吹出口２５を囲むようにダクト２０に取り付けられた磁性部材２７が、環状の１つの部材から構成されていたが、吹出口２５の周方向に並んだ複数の部材から構成されていてもよい。 (4) In the second embodiment, the magnetic member 27 attached to the duct 20 so as to surround the outlet 25 is composed of one annular member, but a plurality of magnetic members 27 arranged in the circumferential direction of the outlet 25. It may be composed of the members of.

１０ ダクト入りシートパッド
１１ シートパッド
２０ ダクト
２５ 吹出口
２７ 磁性部材
３０ シート材
４０ 発泡成形金型
４２ 下型
４３ 下型突部
４４ マグネット 10 Seat pad with duct 11 Seat pad 20 Duct 25 Outlet 27 Magnetic member 30 Sheet material 40 Foam molding mold 42 Lower mold 43 Lower mold protrusion 44 Magnet

Claims (5)

発泡成形金型における下型の成形面から突出する下型突部をダクトの吹出口に挿通させて前記ダクトを前記下型にセットすると共に前記下型突部にて前記吹出口を塞ぎ、前記発泡成形金型に発泡樹脂原料を注入して発泡させるダクト入りシートパッドの製造方法であって、
前記ダクトは、シート材から形成され、
マグネットを前記下型突部の突出方向の先端部に埋設し、磁性部材を前記ダクトのうち前記吹出口の軸方向で前記吹出口と重なる部位に取り付けておくと共に、
前記下型突部の外周面に環状溝を形成しておき、
前記下型に前記ダクトをセットするにあたり、前記下型突部を前記吹出口に突入させて前記マグネットと前記磁性部材を磁気結合させると共に、前記吹出口の開口縁を前記環状溝に係合させるダクト入りシートパッドの製造方法。 The lower mold protrusion protruding from the molding surface of the lower mold in the foam molding mold is inserted into the outlet of the duct to set the duct in the lower mold, and the lower mold protrusion closes the outlet. A method for manufacturing a ducted seat pad in which a foamed resin raw material is injected into a foam molding die to foam it.
The duct is formed of a sheet material and is made of a sheet material.
A magnet is embedded in the tip of the lower die protrusion in the protruding direction, and a magnetic member is attached to a portion of the duct that overlaps the outlet in the axial direction of the outlet.
An annular groove is formed on the outer peripheral surface of the lower die protrusion.
When setting the duct in the lower mold, the lower mold protrusion is pushed into the outlet to magnetically couple the magnet and the magnetic member, and the opening edge of the outlet is engaged with the annular groove. Manufacturing method of ducted seat pad. 発泡成形金型における下型の成形面から突出する下型突部をダクトの吹出口に挿通させて前記ダクトを前記下型にセットすると共に前記下型突部にて前記吹出口を塞ぎ、前記発泡成形金型に発泡樹脂原料を注入して発泡させるダクト入りシートパッドの製造方法であって、
前記ダクトは、シート材から形成され、
磁性部材を、前記吹出口の開口縁に該吹出口を囲むように環状に取り付けておくと共に、
前記下型突部に基端側を段付き状に拡径する段差を設けて、その段差より基端側に配される大径部の先端部位をマグネットで構成しておき、
前記ダクトを前記下型にセットするにあたり、前記下型突部のうち前記段差より先端側に配される小径部を前記吹出口に突入させ、前記大径部を前記吹出口の開口縁に当接させて前記マグネットと前記磁性部材を磁気結合させるダクト入りシートパッドの製造方法。 The lower mold protrusion protruding from the molding surface of the lower mold in the foam molding mold is inserted into the outlet of the duct to set the duct in the lower mold, and the lower mold protrusion closes the outlet. A method for manufacturing a ducted seat pad in which a foamed resin raw material is injected into a foam molding die to foam it.
The duct is formed of a sheet material and is made of a sheet material.
A magnetic member is attached to the opening edge of the outlet in an annular shape so as to surround the outlet.
A step is provided in the lower die projecting portion to expand the diameter of the base end side in a stepped manner, and the tip portion of the large diameter portion arranged on the base end side from the step is configured by a magnet.
When setting the duct in the lower mold, a small diameter portion of the lower mold protrusion portion arranged on the tip side of the step is plunged into the outlet, and the large diameter portion hits the opening edge of the outlet. A method for manufacturing a ducted seat pad that is brought into contact with each other to magnetically couple the magnet and the magnetic member. 請求項１又は２に記載のダクト入りシートパッドの製造方法において、
前記磁性部材を、前記ダクトの外面に取り付けるダクト入りシートパッドの製造方法。 In the method for manufacturing a ducted seat pad according to claim 1 or 2.
A method for manufacturing a ducted seat pad in which the magnetic member is attached to the outer surface of the duct. シートパッド内にダクトが埋設されたダクト入りシートパッドにおいて、
前記ダクトは、シート材から形成され、
前記ダクトのうち吹出口を囲む部分に環状の磁性部材が取り付けられているダクト入りシートパッド。 In a ducted seat pad with a duct embedded in the seat pad
The duct is formed of a sheet material and is made of a sheet material.
A ducted seat pad in which an annular magnetic member is attached to a portion of the duct that surrounds the air outlet. 請求項４に記載のダクト入りシートパッドにおいて、
前記磁性部材は、前記ダクトの外面に取り付けられているダクト入りシートパッド。 In the ducted seat pad according to claim 4.
The magnetic member is a ducted seat pad attached to the outer surface of the duct.
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