JP5097469B2 - Hinged plastic molding - Google Patents

Hinged plastic molding Download PDF

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JP5097469B2
JP5097469B2 JP2007200213A JP2007200213A JP5097469B2 JP 5097469 B2 JP5097469 B2 JP 5097469B2 JP 2007200213 A JP2007200213 A JP 2007200213A JP 2007200213 A JP2007200213 A JP 2007200213A JP 5097469 B2 JP5097469 B2 JP 5097469B2
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hinge
resin
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JP2009034872A (en
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清隆 浦川
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Kyoraku Co Ltd
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Description

本発明は、二つの構成部分をそれらと一体を成す薄肉の蝶番部で連結して成る蝶番付きプラスチック成形体に関するものである。   The present invention relates to a hinged plastic molded article formed by connecting two constituent parts with a thin hinge part integral with them.

二つの構成部分をそれらと一体を成す薄肉の蝶番部で連結して成る蝶番付きプラスチック成形体は、車両の構成部材や容器の構成部材等として広く用いられている。そして、この種の蝶番付きプラスチック成形体の蝶番構造としては、二つの構成部分の樹脂壁を単に薄肉に形成したもののほか（特開２０００−６７７３９号公報参照）、二つの構成部分の樹脂壁を薄肉に形成するとともに薄肉に形成した樹脂壁の表面にシート状片を貼着したもの（特表２００３−５０３２３１号公報参照）が知られている。なお、二つの構成体が一体でなくそれぞれの構成部分の間を蝶番部材で接合して蝶番構造としたものもある（特開２００１−４６１８６号公報参照）。   A hinged plastic molded body formed by connecting two structural parts with a thin hinge part integral with them is widely used as a vehicle structural member, a container structural member, or the like. The hinge structure of this kind of hinge-molded plastic molded body includes not only the resin wall of the two constituent parts simply formed thin (see Japanese Patent Application Laid-Open No. 2000-67739), but also the resin wall of the two constituent parts. There is known a thin-walled resin wall having a sheet-like piece attached to the surface of the resin wall (see Japanese Patent Publication No. 2003-503231). In some cases, the two components are not integrated, and the components are joined by a hinge member to form a hinge structure (see JP 2001-46186 A).

二つの構成部分の樹脂壁を単に薄肉に形成した蝶番の強度と耐久性を向上させる手段として、前掲の特表２００３−５０３２３１号公報に示すように、薄肉に形成した樹脂壁の表面にシート状片を貼着することはある程度有効であるが、薄肉に形成した部分の樹脂壁に対して状片が単に合わせ状態に貼着されているだけであるから、蝶番部分を補強する効果が限定的であるうえ、樹脂壁の表面にシート状片があるので、表皮材が無い場合は著しく外観が損なわれるし、たとえ樹脂壁の表面に表皮材を貼ったものであっても、シート状片が段差となって外観が損なわれることがある。
特開２０００−６７７３９号公報 特表２００３−５０３２３１号公報 特開２００１−４６１８６号公報 As a means for improving the strength and durability of a hinge in which the resin walls of the two constituent parts are simply formed thin, as shown in the above-mentioned JP-T-2003-503231, a sheet-like surface is formed on the surface of the resin wall formed thin Adhering pieces is effective to some extent, but the effect of reinforcing the hinge part is limited because the piece is simply attached to the resin wall of the thin part. In addition, since there is a sheet-like piece on the surface of the resin wall, the appearance is significantly impaired if there is no skin material, and even if the skin material is pasted on the surface of the resin wall, the sheet-like piece is not The appearance may be damaged due to a step.
JP 2000-67739 A Special table 2003-503231 gazette JP 2001-46186 A

そこで、本発明は、二つの構成部分を成す樹脂壁をその裏面側から表面へ向けて圧縮薄肉化して形成する蝶番部の裏面側に、成形過程の溶融樹脂に食い込ませる２０〜１００μｍの単繊維を１０〜９０本合糸したループ状起毛から成る係着面を有する織布片、編布片または不織布片であるシート状片を一体状に貼着することにより、圧縮薄肉化して形成する蝶番部に対するシート状片の圧縮一体化に加えてシート状片の係着面を樹脂壁に食い込ませて一体化をさらに強化して、強度および耐久性に優れるとともに、シート状片が樹脂壁の表面に現れることなく外観性に優れた蝶番付きプラスチック成形体を提供することを目的とするものである。 Accordingly, the present invention provides a 20 to 100 μm single fiber that bites into the molten resin in the molding process on the back side of the hinge portion formed by compressing and thinning the resin wall forming the two constituent parts from the back side to the surface. Hinge formed by compressing and thinning by integrally bonding a woven fabric piece, a knitted fabric piece or a sheet-like piece which is a non-woven fabric piece having a fastening surface composed of 10 to 90 looped raised yarns In addition to compressing and integrating the sheet-like piece to the part, the engaging surface of the sheet-like piece is bitten into the resin wall to further strengthen the integration, and the sheet-like piece is excellent in strength and durability. It is an object of the present invention to provide a hinged plastic molded article having an excellent appearance without appearing in the above.

上記課題を解決するため、本発明は次の技術的手段を提供する。すなわち、本発明の請求項１に係る蝶番付きプラスチック成形体は、二つの構成部分をそれらと一体を成す薄肉の蝶番部で連結して成るプラスチック成形体において、蝶番部は、二つの構成部分を成す樹脂壁をその裏面側から表面へ向けて圧縮薄肉化して形成するとともに、蝶番部の裏面側に、成形過程の溶融樹脂に食い込ませる２０〜１００μｍの単繊維を１０〜９０本合糸したループ状起毛から成る係着面を有する織布片、編布片または不織布片であるシート状片を一体状に貼着したことを特徴とするものである。 In order to solve the above problems, the present invention provides the following technical means. In other words, the plastic molded body with a hinge according to claim 1 of the present invention is a plastic molded body in which two constituent parts are connected by a thin hinge part integrally formed therewith, and the hinge part has two constituent parts. A loop formed by compressing and thinning the resin wall formed from the back side to the surface, and combining 10 to 90 single fibers of 20 to 100 μm to be bitten into the molten resin in the molding process on the back side of the hinge part A sheet-like piece, which is a woven cloth piece, a knitted cloth piece or a non-woven cloth piece, having a fastening surface made of a brushed shape is attached integrally.

本発明に係る蝶番付きプラスチック成形体は、二つの構成部分を成す樹脂壁をその裏面側から表面へ向けて圧縮薄肉化して形成する蝶番部の裏面側に、成形過程の溶融樹脂に食い込ませる２０〜１００μｍの単繊維を１０〜９０本合糸したループ状起毛から成る係着面を有する織布片、編布片または不織布片であるシート状片を一体状に貼着するものであるから、圧縮薄肉化して形成する蝶番部に対するシート状片の圧縮一体化に加えてシート状片の係着面を樹脂壁に食い込ませて一体化をさらに強化することができ、強度および耐久性に優れるとともに、シート状片が樹脂壁の表面に現れることなく外観性に優れたものとなる。 Hinged plastic molded body according to the present invention, on the back side of the hinge portion to form by compression thinner toward the resin wall forming the two components from the backside to the surface, to bite into the molten resin molding process 20 Since a sheet-like piece that is a woven cloth piece, a knitted cloth piece or a non-woven cloth piece having a fastening surface composed of loop-raised fusing 10 to 90 single fibers of -100 μm is integrally attached. In addition to compressing and integrating the sheet-like piece to the hinge part formed by compression thinning, the engagement surface of the sheet-like piece can be bitten into the resin wall to further strengthen the integration, and it has excellent strength and durability The sheet-like piece does not appear on the surface of the resin wall and is excellent in appearance.

本発明に係る蝶番付きプラスチック成形体１は、図１および図２に示すように、二つの構成部分２、３を、それらと一体を成す薄肉の蝶番（ヒンジ）部４で連結して成り、蝶番部４は、二つの構成部分２、３を成す樹脂壁をその裏面１ａ側から表面１ｂへ向けて圧縮薄肉化して形成する。蝶番部４の裏面側にはシート状片５が一体に貼着されている。このシート状片５は、成形過程の溶融樹脂に食い込ませる係着面６を有しており、シート状片５はその係着面６に樹脂が食い込んで強力に貼着される。シート状片５は、織布片、編布片または不織布片であり、その係着面６はループ状起毛を成している。図３は先端が笠状に広がりをもった係合突起７を有するシート状片５を示している。 As shown in FIGS. 1 and 2, the hinged plastic molded body 1 according to the present invention is formed by connecting two component parts 2 and 3 with a thin hinge (hinge) part 4 integrally formed therewith, The hinge part 4 is formed by compressing and thinning the resin wall forming the two constituent parts 2 and 3 from the back surface 1a side to the front surface 1b. A sheet-like piece 5 is integrally attached to the back side of the hinge portion 4. The sheet-like piece 5 has an engaging surface 6 that bites into the molten resin in the molding process, and the sheet-like piece 5 is firmly attached by the resin biting into the engaging surface 6. The sheet-like piece 5 is a woven fabric piece, a knitted fabric piece, or a non-woven piece, and the engaging surface 6 forms a loop-like raising. Figure 3 shows a sheet-like piece 5 having an engaging projection 7 whose tip having a spread bevel shape.

前記蝶番付きプラスチック成形体１は、図４に示すようにブロー成形されるものである。すなわち、８、９は一対の分割金型であり、その一方の金型８は蝶番部成形キャビティ１０を有している。この蝶番部成形キャビティ１０は樹脂壁を圧縮薄肉化するための突部である。図示した蝶番付きプラスチック成形体１は中空二重壁構造であるが、これは単壁構造のパネルなどであってもよく、また、中空二重壁構造または単壁構造のいずれであってもブロー成形のほか圧空成形または射出成形など適宜の成形法により成形することができる。   The hinged plastic molded body 1 is blow molded as shown in FIG. That is, 8 and 9 are a pair of split molds, and one of the molds 8 has a hinge part forming cavity 10. The hinge portion molding cavity 10 is a protrusion for compressing and thinning the resin wall. The hinged plastic molded body 1 shown in the figure has a hollow double wall structure, but this may be a panel having a single wall structure or a blow wall with either a hollow double wall structure or a single wall structure. In addition to molding, it can be molded by an appropriate molding method such as compressed air molding or injection molding.

図４に示すように、一対の分割金型８、９間にパリソン１１を配置し、一方の金型８の蝶番部成形キャビティ１０には、シート状片５をその係着面６側がパリソン１１と対向するように装着してプラスチック成形体をブロー成形する。このようにブロー成形されたプラスチック成形体は、蝶番部成形キャビティ１０により圧縮薄肉化される蝶番部５の凹部となる裏面には、シート状片５がその係着面６が溶融状態の樹脂壁に食い込んで強力に一体化され、蝶番部４はシート状片５によって補強された蝶番付きプラスチック成形体１が成形される。   As shown in FIG. 4, a parison 11 is arranged between a pair of split molds 8 and 9, and the hinge-shaped molding cavity 10 of one mold 8 has a sheet-like piece 5 on the engagement surface 6 side of the parison 11. The plastic molded body is blow-molded so as to face the surface. The plastic molded body blow-molded in this manner has a resin wall in which the sheet-like piece 5 is in the molten state on the back surface which becomes the concave portion of the hinge portion 5 compressed and thinned by the hinge portion forming cavity 10. The hinge-shaped plastic molded body 1, which is strongly integrated with the hinge portion 4 and reinforced by the sheet-like piece 5, is formed.

本発明に係る蝶番付きプラスチック成形体１は、ＡＢＳ樹脂、変性ポリフェニレンオキサイド樹脂、ポリカーボネート樹脂、ポリアミド樹脂、ポリプロピレン樹脂、ポリエチレン樹脂、ポリアセタール、ポリフェニレンスルファイドなどの熱可塑性樹脂で構成される。また熱硬化性樹脂で構成することも可能である。   The hinged plastic molded body 1 according to the present invention is made of a thermoplastic resin such as ABS resin, modified polyphenylene oxide resin, polycarbonate resin, polyamide resin, polypropylene resin, polyethylene resin, polyacetal, polyphenylene sulfide. It is also possible to use a thermosetting resin.

また、シート状片５の係着面６としては、前記のようにループ状起毛であることが好適である。シート状片５としては、ポリアミド、セルロースや芳香族ポリエステル、ポリイミド、ポバール［商品名ビニロン（Ｒ）］などの繊維から成る直径２０〜１００μｍ、好ましくは直径４０〜９０μｍの単繊維を１０〜９０本合糸したマルチフィラメントをループ状成形繊維としたものである。   Moreover, as the engaging surface 6 of the sheet-like piece 5, it is suitable that it is a loop-like raising as mentioned above. As the sheet-like piece 5, 10 to 90 single fibers having a diameter of 20 to 100 μm, preferably 40 to 90 μm, made of a fiber such as polyamide, cellulose, aromatic polyester, polyimide, or poval [trade name Vinylon (R)]. The combined multifilament is formed into a loop-shaped molded fiber.

本発明に係る蝶番付きプラスチック成形体１によれば、二つの構成部分２、３を成す樹脂壁をその裏面１ａ側から表面１ｂへ向けて圧縮薄肉化して形成する蝶番部４の裏面側に、成形過程の溶融樹脂に食い込ませる係着面６を有するシート状片５を一体状に貼着するものであるから、圧縮薄肉化して形成する蝶番部４に対するシート状片５の圧縮一体化に加えてシート状片５の係着面６を樹脂壁に食い込ませて一体化をさらに強化することができる。このため強度および耐久性が大きく向上するとともに、シート状片５が樹脂壁の表面に現れることがないので、樹脂壁が露出している場合はもとより、樹脂壁の表面に表皮材を貼ったものの場合にもシート状片５による段差が生じないので外観性に優れたものとなる。   According to the plastic molded body 1 with a hinge according to the present invention, on the back surface side of the hinge portion 4 formed by compressing and thinning the resin wall forming the two components 2 and 3 from the back surface 1a side to the surface 1b, Since the sheet-like piece 5 having the engaging surface 6 that bites into the molten resin in the molding process is attached integrally, in addition to the compression and integration of the sheet-like piece 5 to the hinge part 4 formed by compression thinning Thus, the fastening surface 6 of the sheet-like piece 5 can be bitten into the resin wall to further enhance the integration. For this reason, the strength and durability are greatly improved and the sheet-like piece 5 does not appear on the surface of the resin wall, so that the skin material is pasted on the surface of the resin wall as well as when the resin wall is exposed. Even in this case, since the step due to the sheet-like piece 5 does not occur, the appearance is excellent.

図５および図６は、本発明に係る蝶番付きプラスチック成形体１を作業車両１２の収納部開閉カバー１３として用いた実施の態様を例示している。１４は運転席、１５は搭乗者座席である。   5 and 6 illustrate an embodiment in which the hinged plastic molded body 1 according to the present invention is used as the storage portion opening / closing cover 13 of the work vehicle 12. Reference numeral 14 denotes a driver seat, and 15 denotes a passenger seat.

本発明に係る蝶番付きプラスチック成形体１は、薄肉の蝶番部４がシート状片５により強力に補強されているので、二つの構成部分２、３の開閉頻度が高い部材や二つの構成部分２、３の開閉角度が大きく特に１８０°ないしは１８０°を超えて３６０°近い角度まで開閉されるような部材として強度および耐久性の面で好適である（図２参照）。なお、蝶番部４は薄肉であってもシート状片５と一体になって補強されているので、蝶番部４は変形や捻れが生じやすい部分であるにもかかわらず引き裂きや引っ張りに対する強度および剛性も高く、蝶番付きプラスチック成形体１がパネル状のものにおいても強度および剛性に優れたものとなる。   In the hinged plastic molded body 1 according to the present invention, since the thin hinge part 4 is strongly reinforced by the sheet-like piece 5, the two constituent parts 2, 3 are frequently opened and closed or the two constituent parts 2. 3 is suitable in terms of strength and durability as a member that has a large opening and closing angle of 3 and is opened and closed to an angle of more than 180 ° or 180 ° and close to 360 ° (see FIG. 2). Even though the hinge part 4 is thin, it is reinforced with the sheet-like piece 5 so that the hinge part 4 is easily deformed or twisted. Even when the hinged plastic molded body 1 is a panel, it is excellent in strength and rigidity.

本発明の一実施の形態に係る蝶番付きプラスチック成形体の要部断面図である。It is principal part sectional drawing of the plastic molding with a hinge which concerns on one embodiment of this invention. 同上屈曲態様を示す要部断面図である。It is principal part sectional drawing which shows a bending aspect same as the above. 先端が笠状に広がりをもった係合突起を有するシート状片を示す一部斜視図である。It is a partial perspective view which shows the sheet-like piece which has the engagement protrusion which the front-end | tip extended in the shape of a shade . 本発明に係る蝶番付きプラスチック成形体のブロー成形態様を示す断面図である。It is sectional drawing which shows the blow molding aspect of the plastic molding with a hinge concerning this invention. 本発明に係る蝶番付きプラスチック成形体を作業車両の収納部開閉カバーとして用いた態様を示す斜視図である。It is a perspective view which shows the aspect which used the plastic molding with a hinge concerning this invention as a storage part opening / closing cover of a working vehicle. 同上収納部開閉カバーを開いた態様を示す部分斜視図である。It is a fragmentary perspective view which shows the aspect which opened the storage part opening / closing cover same as the above.

１ 蝶番付きプラスチック成形体
１ａ 裏面
１ｂ 表面
２、３ 二つの構成部分
４ 蝶番部
５ シート状片
６ 係着面
７ 係合突起
８、９ 一対の分割金型
１０ 蝶番部成形キャビティ
１１ パリソン
１２ 作業車両
１３ 収納部開閉カバー
１４ 運転席
１５ 搭乗者座席 DESCRIPTION OF SYMBOLS 1 Plastic molding with hinge 1a Back surface 1b Surface 2, 3 Two component parts 4 Hinge part 5 Sheet-like piece 6 Engagement surface 7 Engagement protrusion 8, 9 A pair of split mold 10 Hinge part shaping | molding cavity 11 Parison 12 Work vehicle 13 Storage compartment cover 14 Driver's seat 15 Passenger seat

Claims (1)

二つの構成部分をそれらと一体を成す薄肉の蝶番部で連結して成るプラスチック成形体において、
蝶番部は、二つの構成部分を成す樹脂壁をその裏面側から表面へ向けて圧縮薄肉化して形成するとともに、
蝶番部の裏面側に、成形過程の溶融樹脂に食い込ませる２０〜１００μｍの単繊維を１０〜９０本合糸したループ状起毛から成る係着面を有する織布片、編布片または不織布片であるシート状片を一体状に貼着したこと
を特徴とする蝶番付きプラスチック成形体。 In a plastic molded body formed by connecting two structural parts with a thin hinge part integral with them,
The hinge part is formed by compressing and thinning the resin wall forming two components from the back side to the surface,
A woven fabric piece, a knitted fabric piece or a non-woven fabric piece having a fastening surface composed of looped raised yarns formed by combining 10 to 90 single fibers of 20 to 100 μm that bite into the molten resin in the molding process on the back side of the hinge part A plastic molded body with a hinge, characterized in that a sheet-like piece is stuck together.
JP2007200213A 2007-07-31 2007-07-31 Hinged plastic molding Active JP5097469B2 (en)

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