JP6144179B2 - Vehicle seat pad and method of manufacturing the same - Google Patents

Vehicle seat pad and method of manufacturing the same Download PDF

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JP6144179B2
JP6144179B2 JP2013226217A JP2013226217A JP6144179B2 JP 6144179 B2 JP6144179 B2 JP 6144179B2 JP 2013226217 A JP2013226217 A JP 2013226217A JP 2013226217 A JP2013226217 A JP 2013226217A JP 6144179 B2 JP6144179 B2 JP 6144179B2
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mold
seat pad
pad
identification mark
vehicle seat
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JP2015084967A (en
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佳宏 犬飼
佳宏 犬飼
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Inoac Corp
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Description

本発明は車両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.

自動車等の車両座席シートに係るシートパッドで、座部側シートパッドは表皮を被せればシートクッションとなり、背もたれ側シートパッドに表皮を被せればバックレストになって、車両座席シートの主要部を形成する。
該シートパッドのパッド本体は、軟質ポリウレタンフォーム等の発泡成形で造られており、リサイクル法に基づき、その材質を表示することが求められている。さらに、シートパッドには作業者がそれを仕分け,特定し易いように、製品チェック用や金型の型番用等の識別標識が通常、表示されている。
斯かる識別標識を製品に表示させる方法としては、製品完成後にラベル貼着等による後付けする方法の他、予め金型側で対応準備する発明が提案されている（例えば特許文献１）。 A seat pad for vehicle seats of automobiles, etc. The seat pad on the seat side becomes a seat cushion if it covers the skin, and if it covers the seat pad on the back side, it becomes a backrest, and the main part of the vehicle seat Form.
The pad body of the seat pad is made of foamed molding such as flexible polyurethane foam, and it is required to display the material based on the recycling method. Further, identification marks for product check and mold model number are usually displayed on the seat pad so that the operator can easily sort and specify the seat pad.
As a method for displaying such an identification mark on a product, in addition to a method of attaching the label by attaching a label after completion of the product, an invention in which the mold is prepared in advance has been proposed (for example, Patent Document 1).

特開昭６１-２８４９３２号公報Japanese Patent Laid-Open No. 61-284932

しかるに、特許文献１は、その特許請求の範囲に記載のごとく「半導体製造用樹脂封入金型のキャビティに半導体装置の製造メーカー名、品名、ロット区分等の捺印標識を刻印したことを特徴とする半導体製造用樹脂封入金型。」の内容にとどまる。
車両用シートパッドに関しては、座席シートになる段階で表皮が被され、隠れて見えなくなる意匠面側に識別標識を設けていたが、近年、表皮が薄くなっている。従来の表皮が、意匠面側の生地と、その裏面側に配したウレタンスラブやラミネートフィルムとの積層構造であったのに対し、コストダウン等により意匠面側の生地だけの表皮が登場している。そのため、特許文献１等のような金型に単に刻印した識別標識は、シートパッドに薄い表皮で覆った時に、識別標識の文字が浮き上がってしまう問題がある。意匠面側に設けた識別標識にあっては、うっすらとハイライトが外から見え、また触っても判明してしまう不具合が生じている。 However, Patent Document 1 is characterized in that, as described in the claims, “a semiconductor device manufacturer name, product name, lot classification, and the like are engraved in the cavity of the resin-encapsulated metal mold for semiconductor manufacture. Resin-filled mold for semiconductor manufacturing. "
As for the vehicle seat pad, the skin is covered at the stage of becoming a seat, and an identification mark is provided on the side of the design surface that is hidden and cannot be seen. However, in recent years, the skin has become thinner. While the conventional skin was a laminated structure of fabric on the design side and urethane slab or laminate film on the back side, only the fabric on the design side appeared due to cost reduction etc. Yes. Therefore, the identification mark simply engraved on the mold as in Patent Document 1 has a problem that the character of the identification mark is lifted when the sheet pad is covered with a thin skin. In the identification mark provided on the design surface side, there is a problem that the highlight is slightly visible from the outside and is also revealed even when touched.

この不具合改善策として、最近は識別標識を入れる場所を、図８のごとく意匠面Ｐａからパッド側面Ｐｂやパッド裏面Ｐｃに変更する傾向にある。符号Ｍ１は製品チェック用識別標識、符号Ｍ２は型番用識別標識、符号Ｍ３は材質表示用識別標識を示す。
さらにパッド側面Ｐｂなどにおいては、識別標識Ｍの文字の高さＨも小さく対応するようになっている。それでも、シートパッドＳＰに表皮が被った状態下で、例えば助手席シートのパッド側面へ乗員が手を入れて触ると、識別標識Ｍの文字が彫り込んで在るのが判ってしまうという問題が発生している。
加えて、識別標識Ｍを設ける場所をパッド側面Ｐｂやパッド裏面Ｐｃに変更することが、作業者に製品の判別,仕分けを難しくし、作業効率を落とすことになっている。具体的には、納入時などで、作業者が台車にシートパッドＳＰを積むと、識別標識Ｍの文字が、小さくなり見づらいだけにとどまらず、パッド側面Ｐｂやパッド裏面Ｐｃに移ったために、下側になり見えなかったり、台車枠に隠れたりする新たな問題を生んでいる。箱に詰めた場合でも同じ問題が起きている。識別標識としての本来の機能が損なわれている。
さらにいえば、パッド本体の材質表示「ＰＵＲ」の「Ｐ」などは、刻印文字を形成する凹状条線Ｚで囲まれる島状の孤立部分Ｐ８があり(図９)、パッド表面に特許文献１のような刻印を行うと、発泡成形で造られることから、孤立部分Ｐ８の表面にボイドＶが現れ易くなる。この部分の不良のみで欠陥品となり、製品の歩留り低下を招いている問題もあった。 As a measure for improving this problem, recently, there is a tendency to change the place to put the identification mark from the design surface Pa to the pad side surface Pb or the pad back surface Pc as shown in FIG. Reference numeral M1 represents a product check identification mark, reference numeral M2 represents a model number identification mark, and reference numeral M3 represents a material display identification mark.
Further, on the pad side surface Pb and the like, the height H of the character of the identification mark M is also small. Nevertheless, under the condition that the seat pad SP is covered, if the passenger puts his hand into the side of the pad of the passenger seat and touches it, for example, it will be known that the character of the identification mark M is engraved. doing.
In addition, changing the place where the identification mark M is provided to the pad side surface Pb or the pad back surface Pc makes it difficult for the operator to identify and sort the product, and lowers work efficiency. Specifically, when the worker puts the seat pad SP on the carriage at the time of delivery, the character of the identification mark M is not only small and difficult to see, but also moves to the pad side surface Pb and the pad back surface Pc. It creates new problems that cannot be seen on the side or hidden behind the bogie frame. The same problem occurs even when packed in a box. The original function as an identification mark is impaired.
Further, the pad body material display “PUR” “P” has an island-like isolated portion P8 surrounded by a concave stripe Z that forms a stamped character (FIG. 9). When engraving is performed, the void V is likely to appear on the surface of the isolated portion P8 because it is produced by foam molding. There is also a problem that a defective product is caused only by a defect in this portion, resulting in a decrease in product yield.

本発明は、上記問題を解決するもので、パッド本体の意匠面側に識別標識を設けて、単体の製品下で標識として機能発揮させ、識別標識を見易くする一方、表皮で覆うと、該表皮が生地だけで薄くても、外からその識別標識の存在が判らぬようにし、さらにその識別標識を大きく設けることも可能な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 problem. An identification mark is provided on the design surface side of the pad main body to function as a mark under a single product to make the identification mark easy to see. An object of the present invention is to provide a vehicle seat pad and a method of manufacturing the same that can prevent the presence of the identification mark from the outside even if the cloth is thin only from the cloth, and can further provide the identification mark.

上記目的を達成すべく、請求項１に記載の発明の要旨は、意匠面(1a)側が表皮(K)に覆われる車両用シートパッドにおいて、その意匠面(1a)に半球状に窪んだディンプル(23)が、パッド本体(2)の発泡成形で互いに離間して複数設けられ、且つ該ディンプル(23)の集合体がつくる文字(22)で、該パッド本体(2)を見分ける識別標識(21)が形成されてな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、識別標識(21)は前記文字(22)のライン幅(W)が前記ディンプル(23)を二列以上並べて形成され、また該ディンプル(23)の直径(D)が3mmφ〜6mmφの範囲で、且つその深さ(h)が1.5mm〜3mmの範囲にあることを特徴とする。
請求項３の発明の要旨は、意匠面(1a)側が表皮(K)に覆われる車両用シートパッドの製造方法において、意匠面(1a)側のキャビティ形成用型面(41)に半球状に突出する凸部(42)が互いに離間して複数設けられた分割型(4a)を、備える金型(4)を用いて、該金型(4)のキャビティ(C)に液状発泡原料(g)を注入、型閉じし、しかる後、前記凸部(42)で成形されたディンプル(23)の集合体がつくる文字(22)で、パッド本体(2)を見分ける識別標識(21)を形成して、シートパッド用パッド本体(2)を発泡成形する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４の発明たる車両用シートパッドは、請求項３で、車両用シートパッドの形にしたモデル(m)を型枠に収めて砂を込めた後、該モデルのシートパッド意匠面側相当部分(m1)を反転させた捨て砂型(6)が固まる迄にこれを取り外し、該捨て砂型の型面(61)側に、板面(71)から半球状に突出する疣状突起(72)が複数設けられた板状片(7)を、該突起(72)が露出するように埋設して、板状片(7)付き捨て砂型(6)を一体化させ、次に、該板状片(7)付き捨て砂型(6)に砂を込めて固め、前記突起(72)で窪み(82)ができた本砂型(8A)を形成し、その後、該本砂型の型面(81)を反転させた粗分割型(9)を形成し、続いて、該窪み(82)が反転した半球状膨出部(92)の基端縁(92a)をエッジ仕上げ(ES)にして前記凸部(42)を形成した下型とし、該下型を前記分割型(4a)とすることを特徴とする。 In order to achieve the above object, the gist of the invention described in claim 1 is that a dimple dimpled in a hemispherical shape on a design surface (1a) of a vehicle seat pad whose design surface (1a) side is covered with a skin (K). (23), a plurality of the pad body (2) is formed by foam molding and spaced apart from each other, and the character (22) formed by the assembly of the dimples (23) is an identification mark for identifying the pad body (2) ( 21) is formed in the vehicle seat pad. 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 identification mark (21) has a line width (W) of the character (22) formed by arranging two or more rows of the dimples (23). The dimple (23) has a diameter (D) in the range of 3 mmφ to 6 mmφ and a depth (h) in the range of 1.5 mm to 3 mm.
The gist of the invention of claim 3 is that the design surface (1a) side is covered with an outer skin (K), and the cavity forming die surface (41) on the design surface (1a) side is hemispherical. Using a mold (4) provided with a split mold (4a) provided with a plurality of protruding protrusions (42) spaced apart from each other, a liquid foam raw material (g) is provided in the cavity (C) of the mold (4). ), The mold is closed, and then an identification mark (21) is formed that distinguishes the pad body (2) from the character (22) formed by the assembly of dimples (23) formed by the convex portion (42). The vehicle seat pad manufacturing method is characterized by foaming the seat pad pad body (2). A vehicle seat pad according to a fourth aspect of the present invention is the vehicle seat pad according to the third aspect, which corresponds to the seat pad design surface side of the model after the model (m) in the shape of the vehicle seat pad is placed in a mold and filled with sand. Remove the sand sand mold (6) with the part (m1) inverted until it solidifies, and on the mold surface (61) side of the sand sand mold, the bowl-shaped protrusion (72) projecting hemispherically from the plate surface (71) The plate-like piece (7) provided with a plurality of the plate-like pieces (7) is embedded so that the protrusions (72) are exposed, and the discarded sand mold (6) with the plate-like piece (7) is integrated. Sand (7) with sand (6) is sanded and solidified to form a main sand mold (8A) having a depression (82) with the protrusion (72), and then the main sand mold surface (81) Then, a rough division mold (9) is formed, and then the base edge (92a) of the hemispherical bulge portion (92) where the depression (82) is reversed is edge-finished (ES) to form the convex A lower mold formed with a portion (42), and the lower mold is the split mold (4a) .

請求項１,３の発明のごとく、ディンプル(23)の集合体がつくる文字(22)で識別標識(21)が意匠面(1a)に形成されると、単体製品ではその識別標識が見える一方、薄い表皮でも被せれば、ディンプル同士がつながってないので、識別標識が判らなくなる。且つ薄い表皮で覆っても、該識別標識のハイライトが見えるという事態にならない。したがって、シートパッドの意匠面にこの識別標識を設けることができる。
請求項２の発明のごとく、意匠面に識別標識が在ると、製品単体の状態下、作業者はシートパッドを見分け易くなる。納入時等で、台車に載せられたり箱詰めされたりしていても、簡単にシートパッドを見分けることができる。文字(22)のライン幅(W)がディンプル(23)を二列以上並べて形成され、さらに該ディンプル(23)の直径(D)が3mmφ〜6mmφの範囲で、且つその深さ(h)が1.5mm〜3mmの範囲にあると、ディンプル集合体の文字が読めるようになるので、識別標識としても読み取ることができる。
請求項４のごとく、半球状膨出部(92)の基端縁(92a)をエッジ仕上げ(ES)にして前記凸部(42)を形成した下型とすると、半球状に窪んだディンプル(23)の外周縁が鮮明になるので、識別標識用文字を楽に読み取ることができる。 As in the first and third aspects of the invention, when the identification mark (21) is formed on the design surface (1a) with the character (22) formed by the assembly of dimples (23), the identification mark is visible on the single product. If it is covered with a thin skin, the dimples are not connected to each other, so that the identification mark cannot be understood. Moreover, even if it is covered with a thin epidermis, it does not happen that the highlight of the identification mark can be seen. Therefore, this identification mark can be provided on the design surface of the seat pad.
As in the second aspect of the invention, when there is an identification mark on the design surface, the operator can easily recognize the seat pad under the condition of the single product. The seat pad can be easily identified even if it is placed on a cart or packed in a box at the time of delivery. The line width (W) of the character (22) is formed by arranging two or more rows of dimples (23), the diameter (D) of the dimple (23) is in the range of 3 mmφ to 6 mmφ, and the depth (h) is When it is in the range of 1.5 mm to 3 mm, the characters of the dimple assembly can be read, so that it can also be read as an identification mark.
As in claim 4, when the base end edge (92a) of the hemispherical bulge portion (92) is an edge finish (ES) to form the convex portion (42), the dimple ( Since the outer periphery of 23) becomes clear, the characters for identification signs can be read easily.

本発明の車両用シートパッド及びその製造方法は、意匠面側に識別標識を設けて、単体製品下では見分け,判別することが容易になる一方、表皮で覆われれば、該表皮が薄くても見えず、且つ触ったくらいでは識別標識の存在が判らず、また、その識別標識を大きく設けることも可能になるなど優れた効果を発揮する。   The vehicle seat pad and the manufacturing method thereof according to the present invention are provided with an identification mark on the design surface side, and can be easily distinguished and discriminated under a single product. The presence of the identification mark cannot be determined as long as it cannot be seen and touched, and it is possible to provide a large identification mark.

本発明の車両用シートパッド及びその製造方法の一形態で、シートパッドを意匠面側から見た斜視図である。It is the perspective view which looked at the seat pad from the design surface side in one form of the seat pad for vehicles of the present invention, and its manufacturing method. (イ）が図１の識別標識の拡大正面図で、(ロ)が(イ)のII-II線矢視図である。(A) is an enlarged front view of the identification mark of FIG. 1, and (b) is a view taken along the line II-II of (b). 図１のシートパッド製造用分割型を作製する一工程図で、主要工程図を示す。FIG. 2 is a process diagram for producing the split type for manufacturing the seat pad in FIG. 1 and shows the main process diagrams. 図３(ホ)の後の後半仕上げ工程図で、(イ)が図３(ホ)の要部拡大図、(ロ)が(イ)の後、エッジ仕上げした要部拡大図である。FIGS. 3A and 3B are second half finishing process diagrams after FIG. 3E, in which FIG. 3A is an enlarged view of the main part of FIG. 3E, and FIG. 図４の分割型が組み込まれた金型を用い、型開状態とし、発泡原料を注入する説明断面図である。FIG. 5 is an explanatory cross-sectional view in which a mold incorporating the split mold of FIG. 4 is used, a mold is opened, and a foaming material is injected. 図５の型開状態から型閉じした説明断面図である。FIG. 6 is an explanatory sectional view in which the mold is closed from the mold open state of FIG. 5. 図６の型閉じ後、シートパッドを発泡成形した説明断面図である。FIG. 7 is an explanatory sectional view in which a seat pad is foam-molded after the mold is closed in FIG. 従来技術の説明斜視図である。It is a description perspective view of a prior art. 図８のIX-IX線矢視図である。It is the IX-IX arrow directional view of FIG.

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７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はシートパッドを意匠面側から見た斜視図、図２は(イ）が図１の識別標識の拡大正面図で、(ロ)が(イ)のII-II線矢視図、図３,図４は図１のシートパッド製造用分割型を作製する一工程図、図５〜図７は図４の分割型が組み込まれた金型を用いてシートパッドを発泡成形する各工程の断面図を示す。各図では、図面を判り易くするため、ディンプル２３,凸部４２等を強調して描き、また断面を表示するハッチング図示を適宜省略する。   Hereinafter, the vehicle seat pad and the manufacturing method thereof according to the present invention will be described in detail. 1 to 7 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 perspective view of the seat pad as viewed from the design surface side. 2 (a) is an enlarged front view of the identification sign of FIG. 1, (b) is a view taken along the line II-II of (a), and FIGS. FIG. 5 to FIG. 7 show cross-sectional views of each step of foam-molding the seat pad using the mold in which the split mold of FIG. 4 is incorporated. In each figure, in order to make the drawing easy to understand, the dimples 23, the convex portions 42, etc. are drawn with emphasis, and the hatching illustration for displaying the cross section is appropriately omitted.

（１）シートパッド
シートパッド１は、パッド本体２と裏当て材３とを具備し、金型４に該裏当て材３をインサートして、パッド本体２が一体発泡成形される車両用座席シートの主要部品である。図１ごとくの座部側シートパッド１とし、表皮Ｋを被せればシートクッションになる。意匠面１ａ側が表皮Ｋで覆われるシートパッド１に適用される。 (1) Seat pad The seat pad 1 includes a pad main body 2 and a backing material 3, and the pad main body 2 is integrally foam-molded by inserting the backing material 3 into a mold 4. Is the main part. If it is set as the seat part side seat pad 1 as shown in FIG. 1 and the skin K is covered, it will become a seat cushion. The design surface 1a side is applied to the seat pad 1 covered with the skin K.

パッド本体２は、軟質ポリウレタンフォーム等の発泡成形で造られ、図１に示すような座部形状に成形された発泡体である。中央にメイン部２５が配され、その両側にサイド部２６が配されるようにして乗用車用座部クッション体を形づくっている。符号２７は吊溝、符号２７ａがその縦溝、符号２７ｂが横溝を示し、縦溝２７ａがメイン部２５とサイド部２６とを区分けする。   The pad main body 2 is a foamed body formed by foam molding such as a flexible polyurethane foam and molded into a seat shape as shown in FIG. The main part 25 is arranged in the center, and the side part 26 is arranged on both sides of the main part 25 so as to form the passenger seat cushion body. Reference numeral 27 denotes a hanging groove, reference numeral 27 a denotes a vertical groove, reference numeral 27 b denotes a horizontal groove, and the vertical groove 27 a separates the main portion 25 and the side portion 26.

裏当て材３は、パッド本体裏面２ｃの大きさに合わせて裁断されたシート状の布で、パッド本体２の発泡成形でその裏面２ｃに被着一体化される(図１)。製織しないで機械的,化学的,熱的などで繊維を固着したり絡み合わせたりして、シート状にした不織布が裏当て材３に用いられる。不織布には熱可塑性樹脂の繊維を集めて圧縮してシート状にしたフェルトがあり、これを用いることもできる。   The backing material 3 is a sheet-like cloth cut in accordance with the size of the back surface 2c of the pad body, and is integrally attached to the back surface 2c by foam molding of the pad body 2 (FIG. 1). The backing material 3 is a non-woven fabric that is made into a sheet by fixing or intertwining the fibers mechanically, chemically, or thermally without weaving. Nonwoven fabrics include felts made by collecting and compressing thermoplastic resin fibers into a sheet, which can also be used.

上述のごとく、パッド本体２の発泡成形で、その裏面２ｃに裏当て材３が被着一体化してシートパッド１ができるが、複数のディンプル２３が、パッド本体２の発泡成形で、意匠面２ａ側に互いに離間して同時成形される。パッド本体２の意匠面２ａはシートパッド１の意匠面１ａにもなっているが、該パッド本体２の発泡成形時に、意匠面２ａに半球状に窪んだディンプル２３が互いに離間して複数設けられる。そして、ディンプル２３たる凹状ドットで文字２２を表す。図１のごとくディンプル２３の集合体がつくる文字２２で、パッド本体２をひとめ見て区別できる材質表示、右左など製品チェック用又は型番用の識別標識２１が形成される。   As described above, the pad body 2 is foam-molded, and the backing material 3 is adhered and integrated to the back surface 2c to form the seat pad 1. However, the plurality of dimples 23 are foam-molded of the pad body 2 and the design surface 2a. They are simultaneously molded separately from each other. The design surface 2a of the pad main body 2 is also the design surface 1a of the seat pad 1. When the pad main body 2 is foamed, a plurality of dimples 23 that are hemispherically recessed in the design surface 2a are provided apart from each other. . The character 22 is represented by a concave dot as the dimple 23. As shown in FIG. 1, a character 22 formed by an assembly of dimples 23 is formed with an identification mark 21 for product check or model number such as material display, right and left, etc., which can be distinguished at a glance.

詳しくは、複数のディンプル２３が集合して図２ごとくの文字２２を形成する。この文字２２が、一字又は複数並ぶことによって、パッド本体２を見分ける識別標識２１となる。製品チェック用であったり、型番用であったり、さらに材質表示用であったりする識別標識２１となる。図１,図２では、文字２２がディンプル２３の集合体であることを判り易くするため、一例としてディンプル２３がつくる大きな「Ａ」の一文字が、そのまま製品チェック用の識別標識２１としている。製品チェック用識別標識２１には、シートパッド１独自のアルファベットマークが指定され、型番用識別標識２１には使用金型４ごとのシリアルナンバーが用いられる。該識別標識２１は、一文字で構成する以外に、図８の「ＰＵＲ」の文字２２のように複数の文字２２(三文字)で構成するケースも存在する。識別標識２１は、アルファベットの他、数字,ひらがな,カタカナ等と多様であり、これらを組み合わせることも勿論できる。尚、パッド本体２の材質を表す図８の文字２２「ＰＵＲ」は、実際には「＞ＰＵＲ＜」と表記されているが、簡略図示する。   Specifically, a plurality of dimples 23 gather to form a character 22 as shown in FIG. By arranging one or more characters 22, the character 22 serves as an identification mark 21 for identifying the pad main body 2. This is an identification mark 21 for product check, model number, or material display. In FIG. 1 and FIG. 2, in order to make it easy to understand that the character 22 is an aggregate of dimples 23, as an example, a large “A” character created by the dimple 23 is used as an identification mark 21 for product check. An alphabet mark unique to the seat pad 1 is designated for the product check identification mark 21, and a serial number for each mold 4 is used for the model number identification mark 21. In addition to a single character, the identification mark 21 may be composed of a plurality of characters 22 (three characters), such as the “PUR” character 22 in FIG. The identification mark 21 is not limited to the alphabet, but also various numbers, hiragana, katakana, and the like. Of course, these can be combined. The character 22 “PUR” in FIG. 8 representing the material of the pad main body 2 is actually expressed as “> PUR <”, but is simply illustrated.

ディンプル２３はその周りの略平坦な意匠面２ａからパッド本体２内へ半球状に窪むが、本実施形態は、平坦な意匠面２ａからディンプル２３の窪みへとつながる境界で、図２ごとくのエッジＥができるようにしている。ディンプル２３とその外周部に在る意匠面２ａとの境界部分２３１が鮮明になり、ディンプル２３が視認し易くなるからである。シートパッド１を取扱う作業者がディンプル２３の集合体である文字２２をいち早く特定できる。平坦な意匠面２ａからディンプル２３へと入り込むディンプル２３の外周縁２３１がエッジＥとなり、図２(ロ)のごとく屈曲点になる。   The dimple 23 is hemispherically recessed into the pad body 2 from the substantially flat design surface 2a around the dimple 23, but this embodiment is a boundary that leads from the flat design surface 2a to the dimple 23 in the dimple 23 as shown in FIG. Edge E is made possible. This is because the boundary portion 231 between the dimple 23 and the design surface 2a on the outer periphery thereof becomes clear and the dimple 23 is easily visible. The operator who handles the seat pad 1 can quickly identify the character 22 that is an assembly of the dimples 23. An outer peripheral edge 231 of the dimple 23 that enters the dimple 23 from the flat design surface 2a becomes an edge E, which becomes a bending point as shown in FIG.

各ディンプル２３は、その直径Ｄが3mmφ〜6mmφの範囲で、且つその深さｈが1.5mm〜3mmの範囲にあるのが好ましい。これよりも小さいと、ディンプル２３自体の窪みが小さすぎて、識別標識２１の文字２２が薄らぎ、判りづらくなり、一方、これよりも大きくなると、乗員が表皮Ｋの外から触った時にディンプル２３の凹みを感じとるようになってしまうからである。
識別標識２１用の各文字２２の高さＨ（大きさ）については、従来技術で述べた種々の制約事情から、最近、30mm以下と小さいものに限定されるケースが多くなっている。しかし、本発明によれば特に制限がなく、図１のようにパッド本体２の意匠面２ａに大きな文字２２を描くことができる。 Each dimple 23 preferably has a diameter D in the range of 3 mmφ to 6 mmφ and a depth h in the range of 1.5 mm to 3 mm. If it is smaller than this, the depression of the dimple 23 itself is too small, and the character 22 of the identification mark 21 becomes thin and difficult to understand. On the other hand, if it is larger than this, when the occupant touches from the outside of the epidermis K, This is because you will feel a dent.
The height H (size) of each character 22 for the identification mark 21 is recently limited to a small one of 30 mm or less due to various restrictions described in the prior art. However, according to the present invention, there is no particular limitation, and a large character 22 can be drawn on the design surface 2a of the pad body 2 as shown in FIG.

識別標識２１の文字２２を構成するディンプル２３同士の離間距離は、パッド本体２を表皮Ｋで覆う前の意匠面２ａが露出状態で、作業者等の看者が識別標識用文字２２として認識できれば足り、特に制約はない。ディンプル２３がつくる文字２２のライン幅Ｗは、図２のごとく二列並べて形成したように、二列以上並べて形成するのが好ましい。文字２２のライン幅として二列以上並べると、一目で識別標識用文字２２として認識できるからである。   The distance between the dimples 23 constituting the character 22 of the identification mark 21 is such that the design surface 2a before the pad main body 2 is covered with the skin K can be exposed, and an observer such as an operator can recognize it as the identification mark character 22. There are no particular restrictions. The line width W of the characters 22 formed by the dimples 23 is preferably formed by arranging two or more rows as shown in FIG. This is because if two or more lines are arranged as the line width of the character 22, it can be recognized as the identification mark character 22 at a glance.

（２）シートパッド１の製造方法
前記シートパッド１は例えば以下のような製法によって造ることができる。シートパッド１の製造に先立ち、パッド本体裏面２ｃに合わせて、所定大きさに裁断した裏当て材３を準備する。また、パッド本体２の意匠面２ａ側にディンプル２３が設けられるように、意匠面１ａ側の型面４１に半球状凸部４２が突出する分割型４ａを備える金型４が用意される。 (2) Manufacturing method of seat pad 1 The said seat pad 1 can be manufactured with the following manufacturing methods, for example. Prior to manufacturing the seat pad 1, a backing material 3 cut to a predetermined size is prepared in accordance with the back surface 2c of the pad body. In addition, a mold 4 having a split mold 4a in which a hemispherical convex portion 42 projects from a mold surface 41 on the design surface 1a side is prepared so that the dimple 23 is provided on the design surface 2a side of the pad main body 2.

具体的には、図３,図４で示すような製作工程を経た金型４を用意する。金型４の下型となる分割型４ａを次のようにして作製する。
まず、図３(イ)のごとく車両用シートパッド１の形にしたモデルｍを準備する。ディンプル２３の凹みを設けていない状態のシートパッド１外形に合わせた木型モデルｍを造る。図３のモデルｍはシートパッド外形を簡略図示したもので、符号ｍ１がモデルのシートパッド意匠面側相当部分、符号ｍ２は縦溝２７ａ用溝部を示す。
そうして、モデルｍを図示しない型枠に収めて砂(自硬性の砂)を込める。次いで、モデルｍのシートパッド意匠面側相当部分ｍ１を反転させた断面凹状の捨て砂型６が固まる迄に、モデルｍ付き受け材６９を図３(ロ)の黒矢印方向に取り外す。続いて、該捨て砂型６が固まる迄に、捨て砂型６の型面６１側に、板面７１から半球状に突出する疣状突起７２が複数設けられた板状片７を、該突起７２が露出するように埋設する(図３のハ)。板状片７は、突起７２を規則正しく配列***させて成形された突起７２付き板状体から、所定大きさに切り取ったものである。突起７２に比べて板状体に係る突起なしの部分は軟らかく、板状片７の切り取りが容易になっている。捨て砂型６の型面６１と板状片７の板面７１とが面一で、突起７２が板面７１から***するよう設定する。所定時間経過させて、板状片７と捨て砂型６を一体化させ、板状片７付き捨て砂型６が出来る。 Specifically, a mold 4 that has undergone a manufacturing process as shown in FIGS. 3 and 4 is prepared. The split mold 4a that is the lower mold of the mold 4 is manufactured as follows.
First, a model m in the form of a vehicle seat pad 1 is prepared as shown in FIG. A wooden model m is made in accordance with the outer shape of the seat pad 1 in a state where the dimple 23 is not provided with a recess. The model m in FIG. 3 is a simplified illustration of the outer shape of the seat pad. Reference numeral m1 represents a portion corresponding to the seat pad design surface side of the model, and reference numeral m2 represents a groove for the longitudinal groove 27a.
Then, the model m is put in a mold (not shown) and sand (self-hardening sand) is put therein. Next, the receiving material 69 with the model m is removed in the direction indicated by the black arrow in FIG. 3 (b) until the discarded sand mold 6 having a concave cross section obtained by inverting the portion m1 corresponding to the seat pad design surface side of the model m is solidified. Subsequently, until the discarded sand mold 6 is solidified, the plate-like piece 7 provided with a plurality of bowl-shaped protrusions 72 projecting hemispherically from the plate surface 71 on the mold surface 61 side of the discarded sand mold 6 is provided. It is buried so as to be exposed (C in FIG. 3). The plate-like piece 7 is a plate-like body with projections 72 formed by regularly arranging and protruding the projections 72 and cut into a predetermined size. Compared with the protrusion 72, the portion of the plate-like body having no protrusion is soft, and the plate-like piece 7 can be easily cut out. It is set so that the mold surface 61 of the discarded sand mold 6 and the plate surface 71 of the plate-like piece 7 are flush with each other, and the protrusion 72 protrudes from the plate surface 71. After a predetermined time has elapsed, the plate-like piece 7 and the discarded sand mold 6 are integrated to form the discarded sand mold 6 with the plate-like piece 7.

次に、図３(ハ)のごとく突起７２が上に向くように配した板状片７付き捨て砂型６に、砂を込めて固め、前記突起７２によって窪み８２ができた本砂型８Ａを形成する。ここで、該窪み８２が実際のディンプル２３よりも大きく凹むように、前記突起７２は大きめに設定している。その後、本砂型８Ａの型面８１を反転させた粗分割型９を形成し(図３のホ)、続いて、窪み８２が反転した半球状膨出部９２の本体部分をフライス等で削って仕上げると共に、膨出部９２の基端縁９２ａも削ってエッジ仕上げＥＳにして、凸部４２が形成された下型４ａを作製する(図４)。意匠面１ａ側のキャビティＣ形成用の型面４１に、半球状に突出する凸部４２が互いに離間して複数設けられた下型４ａになる。   Next, as shown in FIG. 3 (c), sand is put into the discarded sand mold 6 with the plate-like piece 7 arranged so that the protrusion 72 faces upward, and sand is solidified to form the main sand mold 8A having the depression 82 formed by the protrusion 72. To do. Here, the protrusion 72 is set to be large so that the recess 82 is recessed larger than the actual dimple 23. After that, a coarsely divided mold 9 is formed by inverting the mold surface 81 of the main sand mold 8A (e in FIG. 3), and then the main body portion of the hemispherical bulging portion 92 with the recess 82 inverted is shaved with a milling machine or the like. At the same time as finishing, the base end edge 92a of the bulging portion 92 is also scraped to an edge finish ES to produce the lower mold 4a on which the convex portions 42 are formed (FIG. 4). The mold surface 41 for forming the cavity C on the side of the design surface 1a becomes a lower mold 4a in which a plurality of convex portions 42 protruding in a hemispherical shape are separated from each other.

本実施形態は、本砂型８Ａの型面８１を反転させた粗分割型９を形成するに際し(図３のホ)、分割型の肉厚を薄くして型コストを抑えるべく、さらに図３(ニ)の工程を加えている。図３(ハ)で出来た本砂型８Ａの窪み８２と共に型面８１、さらに外方に延在する型合わせ相当部分８８ａをも含めて、これらに図３(ニ)のごとく所定厚みの変形自在のゴムマットＧ(ここでは、ウレタンマットを採用)で密着させて覆う。符号Ｇ２は窪み８２を埋める凸形成部、符号Ｇ５は縦溝用溝部ｍ２を埋める突形成部を示す。型面８１,窪み８２,型合わせ相当部分８８ａにゴムマットＧが積層される。しかる後、図示しない型枠内に、図３(ニ)のゴムマットＧ付き本砂型８Ａを上下逆にしてセットし、その外側に砂を込めて固め、本砂型外８Ｂを固める(図３のホ)。尚、前記本砂型８Ａは本砂型外８Ｂに対して本砂型内になる。
本砂型外８Ｂが出来た後、ゴムマットＧを剥がし、本砂型外８Ｂと本砂型８Ａとの金型用隙間εへ溶けた材料(ここでは溶解アルミ)を流して、粗分割型９を作製する。粗分割型９は、ゴムマットＧの厚みを適宜指定することにより、所望の肉厚となる。その後、粗分割型９の半球状膨出部９２の本体部分を削って仕上げ、且つ膨出部の基端縁９２ａも削ってエッジ仕上げＥＳにして、型面４１に複数の凸部４２が疣状に***形成された下型４ａを作製する。符号９５は縦溝２７ａを形成するための突条を示す。
他の分割型たる上型４ｂは、凸部４２を設ける必要がなく、公知の製作工程を経て作製される。上型４ｂは下型４ａとの型閉じで、シートパッド１のキャビティＣができるように造られる(図６)。下型４ａに対し上型４ｂを回動可能にするヒンジ４ｃを組付けて、発泡成形用アルミ製金型４が出来上がる。 In the present embodiment, when forming the roughly divided mold 9 in which the mold surface 81 of the main sand mold 8A is inverted (e in FIG. 3), in order to reduce the thickness of the divided mold and reduce the mold cost, FIG. The process of d) is added. 3D, including the depression 82 of the main sand mold 8A made in FIG. 3A and the mold matching portion 88a extending outward, these can be deformed to a predetermined thickness as shown in FIG. 3D. The rubber mat G (here, a urethane mat is used) is adhered and covered. Reference numeral G2 denotes a convex forming portion that fills the recess 82, and reference G5 denotes a protruding formation portion that fills the longitudinal groove portion m2. The rubber mat G is laminated on the mold surface 81, the recess 82, and the mold matching equivalent portion 88a. Thereafter, the main sand mold 8A with the rubber mat G of FIG. 3 (d) is set upside down in a mold (not shown), and sand is put on the outer side thereof to harden the outer sand mold 8B (see FIG. 3). ). The main sand mold 8A is in the main sand mold with respect to the main sand mold outside 8B.
After the outer sand mold 8B is completed, the rubber mat G is peeled off, and the melted material (here, molten aluminum) is poured into the mold gap ε between the outer sand mold 8B and the main sand mold 8A to produce the coarsely divided mold 9. . The coarsely divided mold 9 has a desired thickness by appropriately specifying the thickness of the rubber mat G. Thereafter, the main body portion of the hemispherical bulging portion 92 of the coarsely divided mold 9 is cut and finished, and the base end edge 92a of the bulging portion is also cut to an edge finish ES, so that a plurality of convex portions 42 are formed on the mold surface 41. The lower mold 4a formed in a raised shape is produced. Reference numeral 95 denotes a protrusion for forming the longitudinal groove 27a.
The other divided mold upper mold 4b does not need to be provided with the convex portion 42, and is manufactured through a known manufacturing process. The upper die 4b is closed with the lower die 4a and is formed so as to form a cavity C of the seat pad 1 (FIG. 6). A hinge 4c that allows the upper mold 4b to rotate with respect to the lower mold 4a is assembled, and the aluminum mold 4 for foam molding is completed.

意匠面１ａ側が表皮Ｋに覆われる車両用シートパッド１の製造は、前記金型４を用いて、まず型開状態にして、シートパッド裏面１ａ側をつくる上型４ｂのキャビティ形成用型面４７に、図示しない止具で裏当て材３を取付けセットする(図５)。裏当て材３のセットと相前後して、離型剤が下型型面４１に適宜塗布される。ディンプル用成形部として、下型４ａには凹部と違って凸部４２が設けられているので、該離型剤の溜りによって埋まってしまう不具合は起こらない。
次いで、型開状態のまま、下型４ａのキャビティＣを形成する型面４１に、注入ホースＮＬ等を使用して、シートパッド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５)。 The manufacture of the vehicle seat pad 1 whose design surface 1a side is covered with the skin K is performed by first using the mold 4 to open the mold, and then forming the cavity forming mold surface 47 of the upper mold 4b that forms the seat pad back surface 1a side. Next, the backing material 3 is attached and set with a stopper (not shown) (FIG. 5). In parallel with the set of the backing material 3, a release agent is appropriately applied to the lower mold surface 41. Unlike the concave portion, the lower mold 4a is provided with the convex portion 42 as the molding portion for dimples, so that there is no problem of being buried due to the accumulation of the release agent.
Next, a predetermined amount of a foaming raw material g such as a urethane foaming stock solution for molding the seat pad 1 is injected into the mold surface 41 that forms the cavity C of the lower mold 4a with the mold open. (Figure 5).

続いて、上型４ｂを作動させ型閉じする(図６)。上型４ｂと下型４ａとの型閉じで、型合せ面４８ａ,４８ｂが当接して、裏当て材３がインサートセットされたシートパッド１用キャビティＣができる。ディンプル２３形成用の半球状の各凸部４２が、下型型面４１に疣状に独立して***している。そのため、注入された液状発泡原料ｇは下型型面４１上を自在に流れるようになり、ボイド発生を防ぐことができる。   Subsequently, the upper mold 4b is operated to close the mold (FIG. 6). When the upper mold 4b and the lower mold 4a are closed, the mold mating surfaces 48a and 48b are brought into contact with each other, so that the cavity C for the seat pad 1 in which the backing material 3 is inserted and set is formed. The hemispherical convex portions 42 for forming the dimples 23 are independently raised in a bowl shape on the lower mold surface 41. Therefore, the injected liquid foam raw material g can freely flow on the lower mold surface 41, and the generation of voids can be prevented.

型閉じ後、シートパッド１の発泡成形に移る。図６の型閉じ状態を所定時間維持し、裏当て材３を埋設一体化したパッド本体２を発泡成形する(図７)。意匠面２ａ側を成形する下型型面４１に設けた各凸部４２の反転成形で、ディンプル２３が形成される。各凸部４２がエッジ仕上げＥＳになっているので、凸部４２で成形されるディンプル２３の外周部とその周りの意匠面２ａとの境界部分２３１には図２(ロ)に示すようなエッジＥがつくられる。
裏当て材３,パッド本体２が一体となったシートパッド１の成形後、脱型する。意匠面１ａにディンプル２３の集合体がつくる文字２２で、シートパッド１,パッド本体２を簡単に見分けることができる製品チェック用又は型番等の識別標識２１が形成された所望の車両用シートパッド１が出来上がる(図１)。 After closing the mold, the process proceeds to foam molding of the seat pad 1. The mold closed state of FIG. 6 is maintained for a predetermined time, and the pad main body 2 in which the backing material 3 is embedded and integrated is foam-molded (FIG. 7). The dimples 23 are formed by reversal molding of the convex portions 42 provided on the lower mold surface 41 for molding the design surface 2a side. Since each convex portion 42 has an edge finish ES, the boundary portion 231 between the outer peripheral portion of the dimple 23 formed by the convex portion 42 and the design surface 2a therearound has an edge as shown in FIG. E is created.
After forming the seat pad 1 in which the backing material 3 and the pad main body 2 are integrated, the mold is removed. A desired vehicle seat pad 1 on which a design pad 1 or an identification mark 21 such as a model number can be easily identified with a character 22 formed by an assembly of dimples 23 on the design surface 1a. Is completed (Fig. 1).

（３）効果
このように構成した車両用シートパッド１及びその製造方法によれば、識別標識用文字２２が、図１,図２のごとくディンプル２３の集合体からなり、該識別標識２１を読みとることができる。ディンプル２３とその周りの意匠面２ａとの境界部分２３１をエッジＥに形成しているので、識別標識２１の文字２２が一層読みとり易くなっている。識別標識２１がシートパッド１の意匠面２ａに現れるので、シートパッド１が表皮Ｋで覆われなければ見易く、作業者等は識別標識２１によりシートパッド１を楽に見分け、区別することができる。識別標識２１がパッド本体２の意匠面２ａに現れるので、単体製品下では標識として機能発揮し、納入時などで台車に積まれても、下側になって見えなかったり台車枠に隠れたりして、これまでの製品判別,仕分けを難しくしていた問題を一挙に解決する。台車や箱等に詰められる納入時、従来、製品側面２ｂや製品裏面２ｃに設けた識別標識２１では機能を損ない、誤品の原因になってしまう不具合があったが、斯かる不具合は一掃される。 (3) Effects According to the vehicle seat pad 1 and the manufacturing method thereof configured as described above, the identification mark character 22 is composed of an assembly of dimples 23 as shown in FIGS. 1 and 2, and the identification mark 21 is read. be able to. Since the boundary portion 231 between the dimple 23 and the surrounding design surface 2a is formed at the edge E, the character 22 of the identification mark 21 is more easily read. Since the identification mark 21 appears on the design surface 2 a of the seat pad 1, it is easy to see if the seat pad 1 is not covered with the skin K, and the operator can easily identify and distinguish the seat pad 1 with the identification mark 21. Since the identification mark 21 appears on the design surface 2a of the pad main body 2, it functions as a mark under a single product, and even if it is loaded on the trolley at the time of delivery, it cannot be seen or hidden behind the trolley frame. The problems that have been difficult to identify and sort products so far will be solved at once. At the time of delivery packed in carts, boxes, etc., there has been a problem that the identification mark 21 provided on the product side surface 2b and the product back surface 2c has impaired function and may cause a wrong product. However, such a problem is eliminated. The

一方、シートパッド１が表皮Ｋで覆われて車両にセット状態になると、識別標識用文字２２がディンプル２３の集合体で形成されているので、表皮Ｋが生地だけで薄くなっても、表皮Ｋの外からでは判らない。文字２２が浮き上がってしまうこれまでのような問題は解消される。薄い表皮Ｋを用いた場合でも、ハイライトが出ることはない。また、乗員が薄い表皮Ｋの上から識別標識２１の文字２２をなぞっても、本発明はディンプル２３同士がつながっていないので、文字２２と認識するのは極めて困難となる。文字２２を形成するのが、凸状部でなくディンプル２３の凹状部からなるので、表皮Ｋが被った外から触っても判らない。指でなぞっても判らない。
かくして、ディンプル２３の集合体からなる文字２２で構成された識別標識２１をパッド本体２の意匠面２ａに設けることが、これまでと違って何ら問題がなく、パッド本体意匠面２ａに識別標識２１を入れても、不都合がない。 On the other hand, when the seat pad 1 is covered with the skin K and is set in the vehicle, the identification mark characters 22 are formed of a collection of dimples 23. Therefore, even if the skin K is thinned only by the cloth, the skin K I do not know from outside. The conventional problem that the character 22 is lifted is solved. Even when a thin skin K is used, no highlights appear. In addition, even if the occupant traces the character 22 of the identification mark 21 from above the thin skin K, the present invention makes it extremely difficult to recognize the character 22 because the dimples 23 are not connected to each other. Since the character 22 is formed not by the convex portion but by the concave portion of the dimple 23, it cannot be seen even if it is touched from outside the skin K. I can't understand it with my finger.
Thus, providing the identification mark 21 composed of the character 22 composed of the aggregate of the dimples 23 on the design surface 2a of the pad main body 2 has no problem and the identification mark 21 on the pad main body design surface 2a is different from before. There is no inconvenience even if it is inserted.

そして、これまでのシートパッド１が、意匠面２ａに識別標識２１を設けるのが難しいとの理由で、パッド本体２の側面２ｂ,底面２ｃに識別標識２１を設けることから、文字２２が小さくなって見づらくなっていたが、本発明の文字２２は、既述のごとくディンプル２３の集合体で形成しているので、大きくしても問題ない。図１,図２のように識別標識２１の文字２２を大きく設けて、見易くできるので、作業者はシートパッド１,パッド本体２の判別,仕分けが容易になる。   Since the conventional seat pad 1 is provided with the identification mark 21 on the side surface 2b and the bottom surface 2c of the pad main body 2 because it is difficult to provide the identification mark 21 on the design surface 2a, the character 22 becomes smaller. However, since the character 22 of the present invention is formed by an assembly of dimples 23 as described above, there is no problem even if it is enlarged. As shown in FIG. 1 and FIG. 2, the character 22 of the identification mark 21 is provided in a large size so that it can be easily seen. Therefore, the operator can easily discriminate and sort the seat pad 1 and the pad body 2.

また、本出願人は、裏当て材３にパッド本体２の材質表記させる材質表示入りシートパッド１の製造方法を出願中(特願2012-117020号)であるが、型番用の識別標識２１を設けることは困難な状況にある。本発明によれば、金型４ごとに、その型面４１に型番用の識別標識２１を形成する凸部４２を設けることによって、難なく対応できる。
さらに、識別標識２１のうち、図８,図９のごとく刻印文字２２を形成する凹状条線Ｚで囲まれた島状孤立部分Ｐ８はボイドＶが出来易く、該ボイドの部分だけで欠陥品になり歩留りを下げる問題があったが、本発明は識別標識２１がディンプル２３で形成されるのでこうした問題も起らない。 In addition, the present applicant has applied for a method for manufacturing a sheet pad 1 with a material display that causes the backing material 3 to indicate the material of the pad body 2 (Japanese Patent Application No. 2012-117020). It is difficult to install. According to the present invention, each mold 4 can be handled without difficulty by providing the mold surface 41 with the convex portion 42 that forms the identification mark 21 for the model number.
Further, in the identification mark 21, the island-like isolated portion P8 surrounded by the concave stripe Z that forms the stamped character 22 as shown in FIGS. 8 and 9 is likely to have a void V, and only the void portion becomes a defective product. However, since the identification mark 21 is formed of the dimple 23, such a problem does not occur.

このように、本発明は、識別標識２１がディンプル２３で構成され、ディンプル２３同士がつながってないので、表皮Ｋのない単体製品では識別標識２１が見え、表皮Ｋを被せれば、生地だけの表皮Ｋで薄くても、識別標識２１は見えなくなるという極めて理にかなったシートパッド１になっている。そして、本来の機能発揮させる意匠面２ａに、識別標識２１を設けることが可能になり、しかも該識別標識２１を見易く大きく表示もでき、作業者の作業性向上、歩留まり向上等に優れた効果を発揮する。   Thus, according to the present invention, since the identification mark 21 is composed of the dimples 23 and the dimples 23 are not connected to each other, the identification mark 21 can be seen in a single product without the skin K. Even if the skin K is thin, the identification mark 21 becomes a very reasonable seat pad 1 so that it cannot be seen. And it becomes possible to provide the identification mark 21 on the design surface 2a that exhibits the original function, and the identification mark 21 can be displayed in a large and easy-to-view manner. Demonstrate.

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２,裏当て材３,金型４,キャビティＣ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、本実施形態は座部側シートパッド１に適用したが、バックレストを形成する背もたれ側シートパッド１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, etc. of the pad main body 2, backing material 3, mold 4, cavity C, etc. can be appropriately selected according to the application. For example, although this embodiment was applied to the seat part side seat pad 1, it is applicable also to the backrest side seat pad 1 which forms a backrest.

１ シートパッド
１ａ 意匠面
２ パッド本体
２１ 識別標識
２２ 文字
２３ ディンプル
２３１ 外周縁（境界部分）
４ 金型
４ａ 分割型（下型）
４１ 意匠面側の型面（下型型面）
４２ 凸部
６ 捨て砂型
７ 板状片
７１ 板面
７２ 突起
８Ａ 本砂型
９ 粗分割型
Ｃ キャビティ
ｇ 発泡原料
Ｋ 表皮 DESCRIPTION OF SYMBOLS 1 Seat pad 1a Design surface 2 Pad main body 21 Identification mark 22 Character 23 Dimple 231 Outer periphery (boundary part)
4 Mold 4a Split type (Lower type)
41 Design surface side mold surface (lower mold surface)
42 Convex part 6 Discarded sand mold 7 Plate piece 71 Plate surface 72 Protrusion 8A Main sand mold 9 Coarse divided mold C cavity g Foaming raw material K Skin

Claims (4)

意匠面(1a)側が表皮(K)に覆われる車両用シートパッドにおいて、
その意匠面(1a)に半球状に窪んだディンプル(23)が、パッド本体(2)の発泡成形で互いに離間して複数設けられ、且つ該ディンプル(23)の集合体がつくる文字(22)で、該パッド本体(2)を見分ける識別標識(21)が形成されてなることを特徴とする車両用シートパッド。 In the vehicle seat pad where the design surface (1a) side is covered with the skin (K),
A dimple (23) that is recessed in a hemispherical shape on the design surface (1a) is provided with a plurality of spaces spaced apart from each other by foam molding of the pad body (2), and a character (22) formed by the aggregate of the dimples (23) The vehicle seat pad is characterized in that an identification mark (21) for identifying the pad main body (2) is formed. 前記識別標識(21)は前記文字(22)のライン幅(W)が前記ディンプル(23)を二列以上並べて形成され、また該ディンプル(23)の直径(D)が3mmφ〜6mmφの範囲で、且つその深さ(h)が1.5mm〜3mmの範囲にある請求項１記載の車両用シートパッド。 The identification mark (21) is formed by arranging two or more rows of the dimples (23) in the line width (W) of the characters (22), and the diameter (D) of the dimples (23) is in the range of 3 mmφ to 6 mmφ. The vehicle seat pad according to claim 1, wherein the depth (h) is in the range of 1.5 mm to 3 mm. 意匠面(1a)側が表皮(K)に覆われる車両用シートパッドの製造方法において、
意匠面(1a)側のキャビティ形成用型面(41)に半球状に突出する凸部(42)が互いに離間して複数設けられた分割型(4a)を、備える金型(4)を用いて、該金型(4)のキャビティ(C)に液状発泡原料(g)を注入、型閉じし、しかる後、前記凸部(42)で成形されたディンプル(23)の集合体がつくる文字(22)で、パッド本体(2)を見分ける識別標識(21)を形成して、シートパッド用パッド本体(2)を発泡成形することを特徴とする車両用シートパッドの製造方法。 In the manufacturing method of the vehicle seat pad in which the design surface (1a) side is covered with the skin (K),
Using a mold (4) provided with a split mold (4a) provided with a plurality of convex portions (42) protruding in a hemispherical shape on the cavity forming mold surface (41) on the design surface (1a) side. Then, the liquid foaming raw material (g) is injected into the cavity (C) of the mold (4), the mold is closed, and then the character formed by the assembly of the dimples (23) formed by the convex portions (42). (22) A method for manufacturing a vehicle seat pad, comprising: forming an identification mark (21) for recognizing the pad body (2) and foaming the seat pad pad body (2). 車両用シートパッドの形にしたモデル(m)を型枠に収めて砂を込めた後、該モデルのシートパッド意匠面側相当部分(m1)を反転させた捨て砂型(6)が固まる迄にこれを取り外し、該捨て砂型の型面(61)側に、板面(71)から半球状に突出する疣状突起(72)が複数設けられた板状片(7)を、該突起(72)が露出するように埋設して、板状片(7)付き捨て砂型(6)を一体化させ、次に、該板状片(7)付き捨て砂型(6)に砂を込めて固め、前記突起(72)で窪み(82)ができた本砂型(8A)を形成し、その後、該本砂型の型面(81)を反転させた粗分割型(9)を形成し、続いて、該窪み(82)が反転した半球状膨出部(92)の基端縁(92a)をエッジ仕上げ(ES)にして前記凸部(42)を形成した下型とし、該下型を前記分割型(4a)とする請求項３記載の車両用シートパッドの製造方法。 After putting the model (m) in the form of a vehicle seat pad into the formwork and putting sand in it, until the discarded sand mold (6) with the seat pad design surface equivalent part (m1) inverted is solidified The plate-like piece (7) provided with a plurality of bowl-shaped protrusions (72) protruding in a hemispherical shape from the plate surface (71) is removed from the mold surface (61) side of the discarded sand mold, and the protrusion (72 ) Is buried so that it is exposed, and the discarded sand mold (6) with the plate-like piece (7) is integrated, and then sand is put into the discarded sand mold (6) with the plate-like piece (7) and hardened, Forming a main sand mold (8A) with a depression (82) formed by the protrusion (72), and then forming a coarsely divided mold (9) by reversing the mold surface (81) of the main sand mold, The base end edge (92a) of the hemispherical bulge portion (92) with the depression (82) inverted is an edge finish (ES) to form a lower mold, and the lower mold is divided into the divided molds (42). The method for manufacturing a vehicle seat pad according to claim 3, wherein the mold (4a) is used.
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