JP5009773B2 - Fixing structure of reinforcing member in hollow plate - Google Patents

Fixing structure of reinforcing member in hollow plate Download PDF

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JP5009773B2
JP5009773B2 JP2007333461A JP2007333461A JP5009773B2 JP 5009773 B2 JP5009773 B2 JP 5009773B2 JP 2007333461 A JP2007333461 A JP 2007333461A JP 2007333461 A JP2007333461 A JP 2007333461A JP 5009773 B2 JP5009773 B2 JP 5009773B2
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reinforcing member
hollow plate
wall
front wall
back wall
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JP2009154341A (en
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茂彰 佐野
努 大内
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Kyoraku Co Ltd
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Kyoraku Co Ltd
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Description

本発明は、自動車用のフロアリッドやパネル等に用いられる補強部材によって補強された中空板状体であって、ブロー成形された熱可塑性樹脂製の中空板状体における補強部材の固定構造に関するものである。   BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hollow plate-like body reinforced by a reinforcing member used for automobile floor lids, panels, etc., and relates to a fixing member fixing structure in a blow-molded thermoplastic resin hollow plate-like body It is.

自動車用のフロアリッドやパネル等に用いられる補強部材で補強された中空板状体の従来例について説明する。   A conventional example of a hollow plate reinforced with a reinforcing member used for a floor lid or a panel for an automobile will be described.

図１１は、一従来例の主要部を示す模式部分断面図である。中空板状体２０１の裏壁２０２に空洞部２０６に向かって窪んだ凹陥部２０３を設け、この凹陥部２０３を基部としてさらに小突起２０４を設ける。   FIG. 11 is a schematic partial cross-sectional view showing the main part of one conventional example. A concave portion 203 that is recessed toward the hollow portion 206 is provided on the back wall 202 of the hollow plate-like body 201, and a small protrusion 204 is further provided with the concave portion 203 as a base.

空洞部２０６内に補強部材であるパイプ部材２０５を押し込んでパイプ部材２０５に小突起２０４を当接させて固定する（特開平１１−１１５６８７号公報）。   A pipe member 205, which is a reinforcing member, is pushed into the cavity 206, and a small protrusion 204 is brought into contact with the pipe member 205 and fixed (Japanese Patent Laid-Open No. 11-115687).

図１０は、他の従来例による補強部材の固定構造を示し、（ａ）は、裏壁側から見た模式斜視図、（ｂ）は主要部の部分斜視図である。図１０（ａ）に示すように、中空板状体１０１は間隔をおいて相対する表壁１０２及び裏壁１０３と、前記表壁１０２の周辺と前記裏壁１０３の周辺を閉塞する周囲壁１０４を有し、裏壁１０３には挿入された補強部材１０７に先端が当接する山形状の突起部１０９が形成されている。この山形状の突起部１０９は、補強部材１０７の挿入方向に対する傾斜面の傾斜角度が４５度以下に形成されている。   10A and 10B show a fixing structure of a reinforcing member according to another conventional example. FIG. 10A is a schematic perspective view seen from the back wall side, and FIG. 10B is a partial perspective view of a main part. As shown in FIG. 10A, the hollow plate-like body 101 includes a front wall 102 and a back wall 103 that are opposed to each other at an interval, and a peripheral wall 104 that closes the periphery of the front wall 102 and the periphery of the back wall 103. The back wall 103 is formed with a mountain-shaped protrusion 109 whose tip abuts against the inserted reinforcing member 107. The mountain-shaped protrusion 109 is formed so that the inclination angle of the inclined surface with respect to the insertion direction of the reinforcing member 107 is 45 degrees or less.

特開平１１−１１５６８７号公報JP-A-11-115687 特開２００６−２８１８７号公報JP 2006-28187 A

しかし、中空板状体をブロー成形する際のブロー工程において、パリスンの内部に加圧流体を導入してパリスンを金型のキャビティ面にならう形状に膨らませる。このため、パリスンの外表面のみがキャビティ面に押し付けられ、パリスンの内表面は加圧流体が接触するだけで、キャビティ面に押し付けられることはない。その結果、上記従来例のようなパリスンの内表面に形成される突起部は寸法・精度にバラツキが発生し、補強部材の形状・寸法の組み合わせ管理が難しい。   However, in a blow process when blow molding a hollow plate-like body, a pressurized fluid is introduced into the inside of the parison to inflate the parison into a shape that follows the cavity surface of the mold. For this reason, only the outer surface of the Paris is pressed against the cavity surface, and the inner surface of the Paris is not pressed against the cavity surface only by contact with the pressurized fluid. As a result, the protrusions formed on the inner surface of the Paris as in the conventional example have variations in size and accuracy, and it is difficult to manage the combination of the shape and size of the reinforcing member.

また、ブロー成形された中空板状体の固定部に補強部材を挿入し易くするために補強部材と固定部の間の隙間を大きくすると、ガタツキが発生して補強部材が脱落するという課題があった。   Further, if the gap between the reinforcing member and the fixing portion is increased in order to facilitate the insertion of the reinforcing member into the fixed portion of the blow-molded hollow plate-like body, there is a problem that rattling occurs and the reinforcing member falls off. It was.

本発明は、上記課題を解決するためのものであって、補強部材を固定部に容易に取り付けることができるとともに、ガタツキなく固定することができる中空板状体における補強部材の固定構造を提供することを目的とするものである。   The present invention is for solving the above-described problems, and provides a fixing structure for a reinforcing member in a hollow plate-like body that can be easily attached to a fixing portion and can be fixed without rattling. It is for the purpose.

本発明の中空板状体における補強部材の固定構造は、間隔をおいて相対する表壁及び裏壁と、前記表壁の周辺と前記裏壁の周辺との間に介在された周囲壁とを有するブロー成形された熱可塑性樹脂製の中空板状体において、前記裏壁には、金属製筒状体からなる補強部材が配置された部位に沿って、前記表壁に向かって窪んだ凹部が互に間隔をおいて複数設けられており、前記金属製筒状体には、各凹部に先端が当接する突起部がそれぞれ前記裏壁に向かって突設されていること、を特徴とする。   The fixing structure of the reinforcing member in the hollow plate-like body of the present invention includes a front wall and a back wall facing each other at an interval, and a peripheral wall interposed between the periphery of the front wall and the periphery of the back wall. In the blow-molded hollow plate made of thermoplastic resin, the back wall has a recess recessed toward the front wall along a portion where a reinforcing member made of a metal tubular body is disposed. The metal cylindrical body is provided with a plurality of projecting portions whose tips abut against the respective concave portions and projecting toward the back wall.

本発明は、上述のように構成されているので、次に記載するような効果を奏する。   Since this invention is comprised as mentioned above, there exists an effect as described below.

ブロー成形された中空板状体に対して補強部材である金属製筒状体を容易に取り付けることができる。また、補強部材金属製筒状体をガタツキなく中空板状体に固定することができる。   It is possible to easily attach a metal cylindrical body as a reinforcing member to the blow-molded hollow plate-shaped body. Further, the reinforcing member metal cylindrical body can be fixed to the hollow plate-shaped body without rattling.

本発明を実施するための最良の形態を図面に基いて説明する。   The best mode for carrying out the present invention will be described with reference to the drawings.

図１は、一実施形態による中空板状体における補強部材の固定構造を示す模式斜視図、図２は、図１に示す中空板状体における補強部材の固定構造の主要部を示し、（ａ）は補強部材の軸方向に沿った模式部分断面図、（ｂ）は（ａ）のＡーＡ線に沿った模式断面図である。   FIG. 1 is a schematic perspective view showing a fixing structure of a reinforcing member in a hollow plate according to an embodiment. FIG. 2 shows a main part of the fixing structure of the reinforcing member in the hollow plate shown in FIG. ) Is a schematic partial cross-sectional view along the axial direction of the reinforcing member, and (b) is a schematic cross-sectional view along the AA line of (a).

図１、図２に示すように、中空板状体１は、ブロー成形により一体成形された熱可塑性樹脂製の中空二重壁構造体である。中空板状体１は、間隔をおいて相対する表壁２及び裏壁３と、表壁２の周辺と裏壁３の周辺との間に介在された周囲壁１ａとを有している。   As shown in FIGS. 1 and 2, the hollow plate-like body 1 is a hollow double wall structure made of a thermoplastic resin integrally molded by blow molding. The hollow plate-like body 1 has a front wall 2 and a back wall 3 that are opposed to each other with a space therebetween, and a peripheral wall 1 a that is interposed between the periphery of the front wall 2 and the periphery of the back wall 3.

表壁２の外表面には、表皮材５が積層されており、表壁２と裏壁３の間の中空部９に配置した補強部材６を固定部４において固定することによって剛性等の強度が増大するように補強されている。   A skin material 5 is laminated on the outer surface of the front wall 2, and strength such as rigidity is obtained by fixing the reinforcing member 6 disposed in the hollow portion 9 between the front wall 2 and the back wall 3 at the fixing portion 4. Is reinforced to increase.

ここで、補強部材６の中空板状体１への取り付け工程について、図３〜図５を参照して説明する。
（１）ブロー成形しておいた中空板状体１に対し、一列に設けられた複数の固定部のうちの補強部材側の固定部４の空洞部４ｃに補強部材６を挿入する。この場合、補強部材６に少なくとも一端にしぼり部６ａを有する金属製パイプを用い、しぼり部６ａ側から挿入すると固定部４を削ってしまうことがなくなる。
（２）上記（１）ののち、図３の（ａ）に示すように、補強部材６の中空部にポンチ１０を固定したポンチ台１１を挿入し、ポンチ台１１に連結部材１３ａを介して一端側が取り付けられたスケール１３を用いてポンチ１０を加工位置に位置決めする。
（３）上記（２）ののち、図３の（ｂ）に示すように、ロッド１２のみを矢印方向へ直線移動させる。このとき、ポンチ１０はロッド１２の先端の斜面を昇り、ポンチ１０の先端が補強部材６の内壁面に当接し、固定される。
（４）上記（３）ののち、さらにロッド１２のみを図３の（ｃ）に示すように、矢印方向へ直線移動させて、ポンチ台１１とともにポンチ１０を上昇させることにより、補強部材６を変形させて突起部７ａを径方向外方、つまり裏壁に向けて突設する。
（５）上記（４）ののち、突起部７ａが固定部４の空洞部４ｃの内壁面と補強部材６の外壁面との間の隙間の寸法より大きくなると、補強部材６の突起部７ａとともに固定部４の空洞部４ｃの壁面が径方向へ向けて変形して、固定部４に突起部７ｂが突設される。これにより、中空板状体１に補強部材６が固定される。この際、固定部４に突設される突起部７ｂは、凹部の範囲内に収まる大きさで形成され、突起部７ｂの先端が裏壁面の外方へ突出することがない。これにより、補強部材を固定するために裏壁３の外表面へ向けて設けられた突起部によって、裏壁の平滑性および外観性が損なわれることがない。 Here, the attachment process to the hollow plate-shaped body 1 of the reinforcement member 6 is demonstrated with reference to FIGS.
(1) The reinforcing member 6 is inserted into the hollow portion 4c of the fixing portion 4 on the reinforcing member side among the plurality of fixing portions provided in a row with respect to the blown hollow plate-like body 1. In this case, if the metal pipe which has the squeezed part 6a at least one end is used for the reinforcement member 6, and it inserts from the squeezed part 6a side, the fixing | fixed part 4 will not be shaved.
(2) After the above (1), as shown in FIG. 3A, the punch base 11 having the punch 10 fixed thereto is inserted into the hollow portion of the reinforcing member 6, and the punch base 11 is connected to the punch base 11 via the connecting member 13a. The punch 10 is positioned at the machining position using the scale 13 to which one end side is attached.
(3) After the above (2), as shown in FIG. 3 (b), only the rod 12 is linearly moved in the direction of the arrow. At this time, the punch 10 moves up the slope at the tip of the rod 12, and the tip of the punch 10 abuts against the inner wall surface of the reinforcing member 6 and is fixed.
(4) After the above (3), only the rod 12 is further moved linearly in the direction of the arrow as shown in FIG. By deforming, the protruding portion 7a protrudes radially outward, that is, toward the back wall.
(5) After the above (4), when the protruding portion 7a becomes larger than the size of the gap between the inner wall surface of the cavity 4c of the fixed portion 4 and the outer wall surface of the reinforcing member 6, together with the protruding portion 7a of the reinforcing member 6 The wall surface of the hollow portion 4 c of the fixed portion 4 is deformed in the radial direction, and the protruding portion 7 b is projected from the fixed portion 4. Thereby, the reinforcing member 6 is fixed to the hollow plate-like body 1. At this time, the projecting portion 7b protruding from the fixed portion 4 is formed in a size that fits within the range of the recessed portion, and the tip of the projecting portion 7b does not protrude outward from the back wall surface. Thereby, the smoothness and appearance of the back wall are not impaired by the protrusions provided toward the outer surface of the back wall 3 in order to fix the reinforcing member.

次に、他の実施形態について、図６〜９を参照して説明する。   Next, another embodiment will be described with reference to FIGS.

図６は、他の実施形態による中空板状体における補強部材の固定構造を示す模式斜視図である。図７は、図６に示す中空板状体における補強部材の先端部を示す部分斜視図、図８は、図６に示す中空板状体における補強部材の固定構造を示す模式断面図である。   FIG. 6 is a schematic perspective view showing a fixing structure of a reinforcing member in a hollow plate-like body according to another embodiment. 7 is a partial perspective view showing the tip of the reinforcing member in the hollow plate-like body shown in FIG. 6, and FIG. 8 is a schematic cross-sectional view showing the fixing structure of the reinforcing member in the hollow plate-like body shown in FIG.

図６、図７に示すように、ブロー成形された熱可塑性樹脂製の中空板状体２１は、間隔をおいて相対する表壁２２及び裏壁２３と、前記表壁２２の周辺と裏壁２３の周辺との間に介在された周囲壁２１ａとを有する。   As shown in FIGS. 6 and 7, the blow-molded hollow plate 21 made of thermoplastic resin has a front wall 22 and a back wall 23 facing each other at intervals, and the periphery and back wall of the front wall 22. 23 and a peripheral wall 21a interposed between the periphery of 23.

表壁２２の外表面には表皮材２５が積層されており、表壁２２と裏壁２３の間の中空部に補強部材２６を配設することにより剛性等の機械的強度が補強されている。   A skin material 25 is laminated on the outer surface of the front wall 22, and mechanical strength such as rigidity is reinforced by disposing a reinforcing member 26 in a hollow portion between the front wall 22 and the back wall 23. .

補強部材２６は、断面が矩形の金属製パイプからなり、少なくとも一端に先細りの先端潰し形状部が設けられている。このため、挿入時における凹部の削り取りを防止できる。固定部２４は、ブロー成形時において、パリスンの裏壁となる部分を相対する表壁となる部分に向けて窪ませた凹部を有する。この固定部２４は、補強部材２６を挿入できる形状・寸法の空洞部に相当するものであって、配置された補強部材２６の外壁面と凹部の内壁面の間にわずかに隙間が生じる形状・寸法に設定されている。   The reinforcing member 26 is made of a metal pipe having a rectangular cross section, and at least one end thereof is provided with a tapered tip crushing shape portion. For this reason, it is possible to prevent the recesses from being removed during insertion. The fixing portion 24 has a concave portion in which a portion serving as a back wall of the Paris is recessed toward a portion serving as a facing front wall during blow molding. The fixing portion 24 corresponds to a hollow portion having a shape and size into which the reinforcing member 26 can be inserted, and has a shape in which a slight gap is generated between the outer wall surface of the arranged reinforcing member 26 and the inner wall surface of the recess. Set to dimensions.

なお、補強部材２６の中空板状体２１への取り付け工程は、上述した実施形態による図３に示した取り付け工程と同様でよいので、その説明は省略する。   In addition, since the attachment process to the hollow plate-shaped body 21 of the reinforcement member 26 may be the same as the attachment process shown in FIG. 3 by embodiment mentioned above, the description is abbreviate | omitted.

本発明において、熱可塑性樹脂としてはブロー成形が可能であって且つ強度及び耐久性に優れたＡＢＳ樹脂、変性ポリフェニレンオキサイド樹脂、ポリカーボネイト、ポリアミド、ポリプロピレン等が好ましい。   In the present invention, the thermoplastic resin is preferably an ABS resin, a modified polyphenylene oxide resin, a polycarbonate, polyamide, polypropylene, or the like that can be blow-molded and is excellent in strength and durability.

一実施形態による中空板状体における補強部材の固定構造を示す模式斜視図である。It is a model perspective view which shows the fixation structure of the reinforcement member in the hollow plate-shaped object by one Embodiment. 図１に示す中空板状体における補強部材の固定構造の主要部を示し、（ａ）は、補強部材の軸方向に沿った模式部分断面図、（ｂ）は（ａ）のＡーＡ線に沿った模式断面図である。The main part of the fixation structure of the reinforcement member in the hollow plate-shaped body shown in FIG. 1 is shown, (a) is a typical fragmentary sectional view along the axial direction of a reinforcement member, (b) is the AA line of (a). It is a schematic cross section along the line. 図１に示す中空板状体における補強部材の固定構造を実施するための工程のうち、補強部材を固定部に固定する工程を示す説明図である。It is explanatory drawing which shows the process of fixing a reinforcement member to a fixing | fixed part among the processes for implementing the fixation structure of the reinforcement member in the hollow plate-shaped body shown in FIG. 図３の（ｃ）のＡーＡ線に沿った模式断面図である。It is a schematic cross section along the AA line of (c) of FIG. 図３の（ｂ）におけるＢ−Ｂ線に沿った模式断面図である。It is a schematic cross section along the BB line in (b) of FIG. 他の実施形態による中空板状体における補強部材の固定構造を示す模式斜視図である。It is a model perspective view which shows the fixing structure of the reinforcement member in the hollow plate-shaped body by other embodiment. 図６に示した他の実施形態における補強部材を示す模式部分斜視図である。It is a typical fragmentary perspective view which shows the reinforcement member in other embodiment shown in FIG. 図６に示した中空板状体における補強部材の固定構造を示し、補強部材の軸方向に沿った模式部分断面図である。It is a typical fragmentary sectional view along the axial direction of the reinforcement member which shows the fixation structure of the reinforcement member in the hollow plate-shaped body shown in FIG. 図８のＡ−Ａ線に沿った模式断面図である。It is a schematic cross section along the AA line of FIG. 一従来例による中空二重壁構造体のブロー成形品を示し、（ａ）は模式斜視図、（ｂ）は挿入された補強部材が突起部に当接した状態を示す模式部分断面図である。The blow molded product of the hollow double wall structure by a prior art example is shown, (a) is a model perspective view, (b) is a model fragmentary sectional view which shows the state which the inserted reinforcement member contact | abutted to the projection part. . 他の従来例による補強部材をブロー成形品の空洞部へ挿入する状態を示す模式部分断面図である。It is a typical fragmentary sectional view which shows the state which inserts the reinforcement member by another prior art example in the cavity of a blow molded product.

符号の説明Explanation of symbols

１、２１ 中空板状体
２、２２ 表壁
３、２３ 裏壁
４、２４ 固定部
５、２５ 表皮材
６、２６ 補強部材
７、２７ 周囲壁
７ａ、７ｂ、２７ａ、２７ｂ 突起部
８溶着部
９、２９ 中空部
１０ ポンチ
１１ ポンチ台
１２ ロッド
１３ スケール
１３ａ 連結部材 1, 21 Hollow plate-like body 2, 22 Front wall 3, 23 Back wall 4, 24 Fixed part 5, 25 Skin material 6, 26 Reinforcement member 7, 27 Peripheral wall 7a, 7b, 27a, 27b Projection part 8 Welding part 9 , 29 Hollow part 10 Punch 11 Punch base 12 Rod 13 Scale 13a Connecting member

Claims (2)

間隔をおいて相対する表壁及び裏壁と、前記表壁の周辺と前記裏壁の周辺との間に介在された周囲壁とを有するブロー成形された熱可塑性樹脂製の中空板状体において、
前記裏壁には、金属製筒状体からなる補強部材が配置される部位に沿って、前記表壁に向かって窪んだ凹部からなる固定部が互に間隔をおいて複数設けられており、
前記表壁と前記複数の凹部との間に配置された前記金属製筒状体には、各凹部に先端が当接する突起部がそれぞれ前記裏壁に向かって突設されていること、を特徴とする中空板状体における補強部材の固定構造。 In a blow-molded thermoplastic hollow plate having a front wall and a back wall facing each other at intervals, and a peripheral wall interposed between the periphery of the front wall and the periphery of the back wall ,
The back wall is provided with a plurality of fixing portions each having a recess recessed toward the front wall along a portion where a reinforcing member made of a metal tubular body is disposed,
The metal cylindrical body disposed between the front wall and the plurality of recesses has protrusions projecting toward the back wall, the protrusions being in contact with the respective recesses. The reinforcing member fixing structure in the hollow plate-like body. 前記表壁の外表面に表皮材が積層されていることを特徴とする請求項１記載の中空板状体における補強部材の固定構造。   The structure for fixing a reinforcing member in a hollow plate-like body according to claim 1, wherein a skin material is laminated on the outer surface of the front wall.
JP2007333461A 2007-12-26 2007-12-26 Fixing structure of reinforcing member in hollow plate Expired - Fee Related JP5009773B2 (en)

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