JP2005205621A - Blow molded panel - Google Patents

Blow molded panel Download PDF

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JP2005205621A
JP2005205621A JP2004011947A JP2004011947A JP2005205621A JP 2005205621 A JP2005205621 A JP 2005205621A JP 2004011947 A JP2004011947 A JP 2004011947A JP 2004011947 A JP2004011947 A JP 2004011947A JP 2005205621 A JP2005205621 A JP 2005205621A
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Prior art keywords
shaped core
rod
core material
panel
absorbing member
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Susumu Teraoka
晋 寺岡
Nobunao Fujii
伸尚 藤井
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Daikyo Nishikawa Corp
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Nishikawa Kasei Co Ltd
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Priority to JP2004011947A priority Critical patent/JP2005205621A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To facilitate the handling of a panel to improve the appearance while avoiding the configurational distortion of a panel main body after molding in a case that the panel main body is molded in a state that a rod-shaped core material is inserted by a blow molding method. <P>SOLUTION: The end part of the rod-shaped core material 7 is fitted in an absorbing member 13 formed into a cylindrical shape. A gap R is preformed between the bottom wall 13e of the absorbing member 13 and the end part of the rod-shaped core material 7. At the time of molding of the panel main body 3, the absorbing member 13 and the rod-shaped core material 7 are integrated with the panel main body 3. When the absorbing member 13 is displaced longitudinally toward the center of the rod-shaped core material 7 after molding by the molding shrinkage caused in the panel main body 3, the size of the gap R is preset so that the end part of the rod-shaped core material 7 does not come into contact with the bottom wall 13e of the absorbing member 13. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、樹脂をブロー成形してなるブロー成形パネルに関する。   The present invention relates to a blow molded panel obtained by blow molding a resin.

従来より、例えば自動車のトランクルームには、荷物収容部と該荷物収容部の下方に設けられたスペアタイヤ等の収容部とを仕切るパネルが配設されている。この種のパネルとして、例えば特許文献１に開示されているように、ブロー成形法により成形されたパネル本体を備えたブロー成形パネルがあり、このものでは、パネル本体を補強するために、金属製の棒状心材をパネル本体内に一体にインサートしている。   2. Description of the Related Art Conventionally, for example, in a trunk room of an automobile, a panel that divides a luggage storage portion and a storage portion such as a spare tire provided below the luggage storage portion is disposed. As this type of panel, for example, as disclosed in Patent Document 1, there is a blow molded panel provided with a panel main body formed by a blow molding method. In this case, a metal plate is used to reinforce the panel main body. The rod-shaped core material is integrally inserted into the panel body.

ところで、上述のようにブロー成形法により棒状心材をパネル本体内にインサートすると、溶融状態の樹脂が冷却されるときに生じるパネル本体の成形収縮に起因して、パネル本体の方が棒状心材よりも大きく収縮し、このため、棒状心材がパネル本体内で突っ張って該パネル本体の形状が歪む虞れがある。   By the way, when the rod-shaped core material is inserted into the panel body by the blow molding method as described above, the panel body is more than the rod-shaped core material due to the molding shrinkage of the panel body that occurs when the molten resin is cooled. There is a risk that the rod-shaped core material will be stretched in the panel body and the shape of the panel body will be distorted.

そこで、特許文献１では、棒状心材の端部をパネル本体の側壁から外部へ突出させて棒状心材の端部をパネル本体に接触させないようにしたり、あるいは、パネル本体の表面外周側に凹部を形成し、この凹部内に棒状心材の端部を位置付けて該棒状心材の端部がパネル本体に接触しないようにしている。
特開平９−３１４６９０号公報（第３頁〜第５頁、図２、図７） Therefore, in Patent Document 1, the end of the rod-shaped core is protruded from the side wall of the panel main body to the outside so that the end of the rod-shaped core is not in contact with the panel main body, or a recess is formed on the outer peripheral side of the surface of the panel main body. The end of the bar-shaped core is positioned in the recess so that the end of the bar-shaped core does not contact the panel body.
Japanese Patent Laid-Open No. 9-314690 (pages 3 to 5, FIGS. 2 and 7)

しかしながら、上記特許文献１のように、棒状心材の端部がパネル本体の側壁から突出している場合には、ブロー成形パネルの見栄えが悪くなるとともにパネル取扱い時に棒状心材が邪魔になる。一方、パネル本体の外周側に凹部を形成した場合には、パネル取扱い時に凹部に指が引っ掛かって取り扱いづらい。   However, when the end portion of the bar-shaped core member protrudes from the side wall of the panel main body as in Patent Document 1, the blow-molded panel looks bad and the bar-shaped core member becomes an obstacle when handling the panel. On the other hand, when the concave portion is formed on the outer peripheral side of the panel body, it is difficult to handle because the finger is caught in the concave portion when the panel is handled.

本発明は斯かる点に鑑みてなされたものであり、その目的とするところは、ブロー成形法により棒状心材をインサート成形する場合に、成形後にパネル本体の形状が歪まないようにしながら、取り扱いを容易にしかつ見栄えを良好にすることにある。   The present invention has been made in view of such points, and the object of the present invention is to handle the rod-shaped core material by insert molding the rod-shaped core material by blow molding, while preventing the shape of the panel body from being distorted after molding. It is to make it easy and look good.

上記目的を達成するために、本発明では、パネル本体と棒状心材との成形後の収縮量の差を吸収する吸収部材を棒状心材の端部に配置しパネル本体と一体化した。   In order to achieve the above object, in the present invention, an absorbing member that absorbs the difference in shrinkage between the panel main body and the rod-shaped core material after molding is disposed at the end of the rod-shaped core material and integrated with the panel main body.

具体的には、棒状心材がパネル本体内に一体にインサートされたブロー成形パネルを対象とする。   Specifically, a blow molded panel in which a rod-shaped core material is integrally inserted in the panel main body is an object.

そして、成形後の冷却により生じるパネル本体と棒状心材との収縮量の差を吸収する吸収部材を上記棒状心材の端部に配置してパネル本体と一体化する構成とする。   And it is set as the structure integrated with a panel main body by arrange | positioning the absorption member which absorbs the difference of the shrinkage | contraction amount of the panel main body and rod-shaped core material which arise by cooling after shaping | molding in the edge part of the said rod-shaped core material.

請求項２の発明では、請求項１の発明において、吸収部材をパネル本体から取り外し可能とし、上記吸収部材を取り外すことで棒状心材の端部がパネル本体から露出するように構成する。   According to a second aspect of the present invention, in the first aspect of the invention, the absorbent member is removable from the panel body, and the end of the rod-shaped core is exposed from the panel main body by removing the absorbent member.

請求項３の発明では、請求項１又は２の発明において、吸収部材を棒状心材の端部が嵌入する有底の筒状に形成し、上記棒状心材の端部と上記吸収部材の底壁との間に所定の隙間を形成する構成とする。   According to the invention of claim 3, in the invention of claim 1 or 2, the absorbing member is formed in a bottomed cylindrical shape into which the end of the rod-shaped core material is fitted, and the end of the rod-shaped core material and the bottom wall of the absorbing member A predetermined gap is formed between the two.

請求項４の発明では、請求項１又は２の発明において、吸収部材は弾性体である構成とする。   According to a fourth aspect of the present invention, in the first or second aspect of the present invention, the absorbing member is an elastic body.

請求項１の発明によれば、成形後に生じるパネル本体と棒状心材との収縮量の差を吸収する吸収部材を棒状心材の端部に配置してパネル本体と一体化したので、成形後にパネル本体の方が棒状心材よりも大きく収縮すると、この収縮量の差が吸収部材に吸収される。これにより、従来のように、棒状心材の端部をパネル本体から突出させたり、パネル本体に凹部を形成することなく、棒状心材がパネル本体内で突っ張るのを防ぐことができるので、パネル本体の形状が歪むのを回避しながら、取り扱いを容易にすることができるとともに、見栄えを良好にすることができる。   According to the first aspect of the present invention, since the absorbing member that absorbs the difference in shrinkage between the panel main body and the rod-shaped core material generated after molding is arranged at the end of the rod-shaped core material and integrated with the panel main body, the panel body after molding When is contracted more than the rod-shaped core material, the difference in the contraction amount is absorbed by the absorbing member. As a result, it is possible to prevent the rod-shaped core material from stretching in the panel body without causing the end of the rod-shaped core material to protrude from the panel body or forming a recess in the panel body, as in the past. While avoiding the distortion of the shape, the handling can be facilitated and the appearance can be improved.

請求項２の発明によれば、吸収部材をパネル本体から取り外すことで棒状心材の端部が露出するので、ブロー成形パネルを廃棄する際に各部材を素材に応じて容易に分別できて、廃棄コストを低減することができる。   According to invention of Claim 2, since the edge part of a rod-shaped core material is exposed by removing an absorption member from a panel main body, when discarding a blow-molded panel, each member can be easily separated according to a raw material, and is discarded. Cost can be reduced.

請求項３の発明によれば、棒状心材の端部を吸収部材に嵌入して該吸収部材と棒状心材とを一体化させることができるので、両者を成形型に容易にセットすることができる。また、成形後にパネル本体の方が棒状心材よりも大きく収縮すると、吸収部材がパネル本体と一体化しているので、吸収部材はその底壁が棒状心材の端部に近接するように変位し、棒状心材の端部と吸収部材の底壁との隙間が小さくなる。これにより、パネル本体と棒状心材との収縮量の差が吸収されるので、パネル本体の形状が歪むのを確実に防止することができる。   According to invention of Claim 3, since the edge part of a rod-shaped core material can be inserted in an absorption member and this absorption member and a rod-shaped core material can be integrated, both can be set to a shaping | molding die easily. Also, if the panel body shrinks more than the rod-shaped core after molding, the absorbent member is integrated with the panel body, so the absorbent member is displaced so that its bottom wall is close to the end of the rod-shaped core. The gap between the end of the core material and the bottom wall of the absorbing member is reduced. Thereby, since the difference in contraction amount between the panel main body and the rod-shaped core material is absorbed, it is possible to reliably prevent the shape of the panel main body from being distorted.

請求項４の発明によれば、成形後にパネル本体の方が棒状部材よりも大きく収縮すると、吸収部材がパネル本体と一体化しているので、吸収部材が棒状心材の端部に押し付けられるように変位し、吸収部材が弾性変形する。これにより、パネル本体と棒状心材との収縮量の差が吸収されるので、パネル本体の形状が歪むのを確実に防止することができる。また、吸収部材が弾性体であるため、吸収部材の寸法誤差が大きくてもパネル本体と棒状心材との収縮量の差を狙い通りに吸収することができ、これにより、吸収部材の製造コストを低減することができる。   According to the invention of claim 4, when the panel body shrinks more than the rod-shaped member after molding, the absorbing member is integrated with the panel body, so that the absorbing member is displaced so as to be pressed against the end of the rod-shaped core. Then, the absorbing member is elastically deformed. Thereby, since the difference in contraction amount between the panel main body and the rod-shaped core material is absorbed, it is possible to reliably prevent the shape of the panel main body from being distorted. Moreover, since the absorbing member is an elastic body, even if the dimensional error of the absorbing member is large, the difference in shrinkage between the panel body and the rod-shaped core can be absorbed as intended, thereby reducing the manufacturing cost of the absorbing member. Can be reduced.

以下、本発明の実施形態を図面に基づいて詳細に説明する。   Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

（発明の実施形態１）
図２は、本発明の実施形態１に係るブロー成形パネル１を示し、このブロー成形パネル１は、図示しないが、自動車のトランクルームに配置されて、荷物収容部と該荷物収容部の下方に設けられたスペアタイヤ等の物品を収容する下方収容部とを仕切るものである。 Embodiment 1 of the Invention
FIG. 2 shows a blow-molded panel 1 according to Embodiment 1 of the present invention. This blow-molded panel 1 is arranged in a trunk room of an automobile (not shown), and is provided under a luggage storage portion and the luggage storage portion. And a lower housing portion that houses articles such as spare tires.

上記ブロー成形パネル１は、熱可塑性樹脂をブロー成形法により成形してなる中空状のパネル本体３を備えており、このパネル本体３は、上記トランクルームの車体側部材に形成された凹部内に嵌合する長方形状を有している。そして、パネル本体３を凹部に嵌合させることで該パネル本体３が略水平に延びた状態となって荷物収容部と下方収容部とが仕切られる。   The blow molded panel 1 includes a hollow panel body 3 formed by molding a thermoplastic resin by a blow molding method, and the panel body 3 is fitted in a recess formed in a vehicle body side member of the trunk room. It has a matching rectangular shape. Then, by fitting the panel body 3 into the recess, the panel body 3 extends substantially horizontally, and the luggage storage portion and the lower storage portion are partitioned.

上記荷物収容部と下方収容部とを仕切った状態で上側に位置するパネル本体３の上壁３ａ表面は不織布５で覆われている。この不織布５は、上記パネル本体３の側壁３ｂの上側一部分も一緒に覆う形状に裁断されていて、パネル本体３の成形の際に該パネル本体３に同時に貼り付けられたものである。   The surface of the upper wall 3a of the panel body 3 positioned on the upper side in a state where the luggage storage portion and the lower storage portion are partitioned is covered with a nonwoven fabric 5. The nonwoven fabric 5 is cut into a shape that also covers the upper part of the side wall 3b of the panel body 3 together, and is affixed to the panel body 3 at the same time as the panel body 3 is molded.

上記パネル本体３の内部には、該パネル本体３の長手方向に延びる補強用の棒状心材７がパネル本体３の幅方向に互いに間隔をあけて３本配設されている。該棒状心材７は、例えば鋼板等の金属板材を細長く加工してなるものであり、パネル本体３の長手方向両端部近傍に亘って延びている。これら棒状心材７は、該棒状心材７の幅方向がパネル本体３の厚み方向と一致するように配置されていて、パネル本体３の上面に加わる荷物の荷重に対して補強効果が十分に得られるようになっている。上記棒状心材７は、図３にも示すように、パネル本体３の内部に一体にインサートされていて、棒状心材７はパネル本体３の成形の際に下壁３ｃより上壁３ａに向けて突出して設けたリブ３ｄ内に包み込まれて位置し、棒状心材７の外周は上記リブ３ｄの固化した樹脂により覆われ、この周囲の樹脂により棒状心材７がパネル本体３に保持されている。   Three reinforcing rod-shaped core members 7 extending in the longitudinal direction of the panel main body 3 are disposed in the panel main body 3 at intervals in the width direction of the panel main body 3. The rod-shaped core material 7 is formed by elongating a metal plate material such as a steel plate, for example, and extends in the vicinity of both longitudinal end portions of the panel body 3. These rod-shaped core members 7 are arranged so that the width direction of the rod-shaped core members 7 coincides with the thickness direction of the panel body 3, and a sufficient reinforcing effect can be obtained against the load of the load applied to the upper surface of the panel body 3. It is like that. As shown in FIG. 3, the rod-shaped core material 7 is integrally inserted into the panel body 3, and the rod-shaped core material 7 projects from the lower wall 3 c toward the upper wall 3 a when the panel body 3 is molded. The outer periphery of the bar-shaped core member 7 is covered with the solidified resin of the rib 3d, and the bar-shaped core member 7 is held by the panel body 3 by the surrounding resin.

また、図１にも示すように、上記パネル本体３の下壁３ｃにおける棒状心材７に対応する箇所には溝９が形成されている。この溝９は、パネル本体３の成形の際に上記棒状心材７の両側面をそれぞれ包み込んだ溶融樹脂がぶつかってできるラインに対応する箇所に設けられており、このラインを目立ちにくくするためのものである。   Further, as shown in FIG. 1, a groove 9 is formed at a location corresponding to the rod-shaped core material 7 in the lower wall 3 c of the panel body 3. The groove 9 is provided at a location corresponding to a line formed by the molten resin that wraps around both side surfaces of the rod-shaped core material 7 when the panel body 3 is molded, and makes this line inconspicuous. It is.

また、上記溝９の延長線上には窪み１１が複数形成されている。該窪み１１は、パネル本体３の成形の際に棒状心材７を成形型に保持しておくための保持具（共に図示せず）により形成されたものである。尚、上記保持具を成形型に進退可能に設け、保持具を進出させた状態で棒状心材７を保持しておき、パネル本体３の成形が完了する直前に保持具を後退させるようにしてもよい。これにより、パネル本体３に窪み１１が形成されなくなる。   A plurality of depressions 11 are formed on the extension line of the groove 9. The recess 11 is formed by a holder (both not shown) for holding the rod-shaped core material 7 in the mold when the panel body 3 is molded. The holding tool is provided in a mold so as to be able to advance and retreat, the rod-shaped core material 7 is held in a state where the holding tool is advanced, and the holding tool is retracted immediately before the molding of the panel body 3 is completed. Good. Thereby, the recess 11 is not formed in the panel body 3.

ここで、上記パネル本体３は高温の溶融樹脂を成形するものであるため成形収縮が起こり、この成形収縮と、一般に樹脂の方が金属よりも線膨張の度合いが大きいこととにより、成形後のパネル本体３の収縮量は棒状心材７の収縮量よりも大きくなる。このことに対応して、本実施形態では、成形後のパネル本体３と棒状心材７との収縮量の差を吸収する吸収部材１３が上記棒状心材７の両端部にそれぞれ配設されている。各吸収部材１３は、樹脂を射出成形してなるものであり、棒状心材７の端部が嵌入する矩形断面を有する筒状に形成されている。   Here, since the panel body 3 is for molding a high-temperature molten resin, molding shrinkage occurs. Due to this molding shrinkage and generally the degree of linear expansion of the resin is larger than that of the metal, The contraction amount of the panel body 3 is larger than the contraction amount of the rod-shaped core material 7. Corresponding to this, in the present embodiment, the absorbing members 13 that absorb the difference in shrinkage between the molded panel body 3 and the rod-shaped core material 7 are disposed at both ends of the rod-shaped core material 7. Each absorbing member 13 is formed by injection molding of resin, and is formed in a cylindrical shape having a rectangular cross section into which an end of the rod-shaped core material 7 is fitted.

図３に示すように、上記吸収部材１３がパネル本体３と一体化した状態で、該パネル本体３の上壁３ａ側に位置する吸収部材１３の上壁１３ａは、パネル本体３の下壁３ｃより突出したリブ３ｄの先端部を挟んでパネル本体３の上壁３ａ裏面に密着している。また、同図（ｂ）に示すように、上記吸収部材１３の両側壁１３ｃには、該吸収部材１３の外方へ突出する一対の突出部１３ｂが形成されている。これら一対の突出部１３ｂ及び吸収部材１３の両側壁１３ｃは、パネル本体３を成形する際に上記吸収部材１３を包み込んで固化した樹脂により覆われている。一方、上記吸収部材１３の下壁１３ｄ外面はパネル本体３の外部に露出していて、該パネル本体３の下壁３ｃ外面と略同一面に位置しており、また、同図（ａ）に示すように、吸収部材１３の底部を構成する底壁１３ｅ外面はパネル本体３の外部に露出していて、該パネル本体３の側壁３ｂ外面と略同一面に位置している。この吸収部材１３の底壁１３ｅは該吸収部材１３の上壁１３ａや下壁１３ｄよりも厚肉に形成され、この底壁１３ｅには、吸収部材１３のパネル本体３から露出した面に開口する小円形断面の孔部１３ｆが形成されている。この孔部１３ｆは成形型に設けられた位置決めピン（図示せず）が挿入されるものである。   As shown in FIG. 3, the upper wall 13 a of the absorbing member 13 positioned on the upper wall 3 a side of the panel body 3 is integrated with the lower wall 3 c of the panel body 3 in a state where the absorbing member 13 is integrated with the panel body 3. The panel 3 is in close contact with the back surface of the upper wall 3a with the tip of the protruding rib 3d interposed therebetween. Further, as shown in FIG. 2B, a pair of projecting portions 13 b projecting outward from the absorbing member 13 are formed on both side walls 13 c of the absorbing member 13. The pair of projecting portions 13b and both side walls 13c of the absorbing member 13 are covered with a resin that has wrapped and solidified the absorbing member 13 when the panel body 3 is molded. On the other hand, the outer surface of the lower wall 13d of the absorbing member 13 is exposed to the outside of the panel body 3 and is located on the substantially same surface as the outer surface of the lower wall 3c of the panel body 3, as shown in FIG. As shown, the outer surface of the bottom wall 13e constituting the bottom of the absorbing member 13 is exposed to the outside of the panel body 3, and is located substantially flush with the outer surface of the side wall 3b of the panel body 3. The bottom wall 13e of the absorbing member 13 is formed thicker than the upper wall 13a and the lower wall 13d of the absorbing member 13, and the bottom wall 13e opens to a surface exposed from the panel body 3 of the absorbing member 13. A hole 13f having a small circular cross section is formed. This hole 13f is for inserting a positioning pin (not shown) provided in the mold.

上記棒状心材７の端部と吸収部材１３の底壁１３ｅとの間には所定の隙間Ｒが形成されている。この隙間Ｒは、詳細は後述するが、パネル本体３の成形後の冷却による当該パネル本体３の収縮量と棒状心材７の収縮量との差を見込んだ大きさに設定されている。   A predetermined gap R is formed between the end of the rod-shaped core material 7 and the bottom wall 13 e of the absorbing member 13. As will be described in detail later, the gap R is set to a size that allows for the difference between the contraction amount of the panel body 3 and the contraction amount of the rod-shaped core material 7 due to cooling after the panel body 3 is molded.

次に、上記のように構成されたブロー成形パネル１の製造要領について説明する。まず、上記棒状心材７の一端部及び他端部を吸収部材１３、１３にそれぞれ嵌入してこれら吸収部材１３と棒状心材７とを一体化する。   Next, a manufacturing procedure of the blow molded panel 1 configured as described above will be described. First, one end portion and the other end portion of the rod-shaped core material 7 are fitted into the absorption members 13, 13, respectively, and the absorption member 13 and the rod-shaped core material 7 are integrated.

そして、図示しないが、型開きした状態にある一対の成形型のうち一方の成形型に設けられた保持具に上記棒状心材７を保持させるとともに、吸収部材１３の孔部１３ｆに成形型の位置決めピンを挿入して、棒状心材７及び吸収部材１３を成形型にセットする。この際、棒状心材７と吸収部材１３とを一体化しているので、両者７、１３を同時に成形型にセットすることが可能である。   Although not shown, the rod-shaped core material 7 is held by the holder provided in one of the pair of molds in the opened state, and the mold is positioned in the hole 13f of the absorbing member 13. A pin is inserted and the rod-shaped core material 7 and the absorbing member 13 are set in a mold. At this time, since the rod-shaped core member 7 and the absorbing member 13 are integrated, it is possible to set both the members 7 and 13 simultaneously in the mold.

その後、上記成形型の上方に配置された押出機（図示せず）から溶融した熱可塑性樹脂からなるパリソン（図示せず）を一対の成形型の間に押し出す。このときに、パリソンと他方の成形型との間に上記不織布５を垂らしておく。そして、両成形型を型締めしてパリソン内に圧縮空気を導入すると、パリソンが膨張して成形型の成形面に密着して成形される。このとき、パネル本体３の下壁３ｃ側の溶融樹脂は、棒状心材７の両側面及び吸収部材１３の両側壁１３ｃに沿って棒状心材７及び吸収部材１３を包み込みパネル本体３の上壁３ａ側へ突出する。そして、この下壁３ｃから突出した先端が上壁３ａに溶着し、中に棒状心材７及び吸収部材１３が位置するリブ３ｄが形成される。また、この成形の際には、上記不織布５にパネル本体３の上壁３ａ側の溶融樹脂が密着する。   Then, a parison (not shown) made of a molten thermoplastic resin is extruded between a pair of molds from an extruder (not shown) disposed above the mold. At this time, the nonwoven fabric 5 is hung between the parison and the other mold. When both molds are clamped and compressed air is introduced into the parison, the parison expands and is molded in close contact with the molding surface of the mold. At this time, the molten resin on the lower wall 3c side of the panel body 3 wraps the rod-shaped core material 7 and the absorbing member 13 along both side surfaces of the rod-shaped core material 7 and both side walls 13c of the absorbing member 13, and the upper wall 3a side of the panel body 3 Project to And the front-end | tip protruded from this lower wall 3c welds to the upper wall 3a, and the rib 3d in which the rod-shaped core material 7 and the absorption member 13 are located is formed. Further, at the time of molding, the molten resin on the upper wall 3 a side of the panel body 3 is in close contact with the nonwoven fabric 5.

しかる後、溶融樹脂を成形型中で冷却して固化させることにより、棒状心材７がパネル本体３にインサートされた状態となり棒状心材７とパネル本体３とが一体化するとともに、吸収部材１３がパネル本体３の表面に下壁１３ｄと底壁１３ｅとが露出して取り外し可能な状態でパネル本体３と一体化する。このとき、吸収部材１３に突出部１３ｂを形成しているので、該突出部１３ｂがその周囲で固化した樹脂に係合し、吸収部材１３がパネル本体３から外れにくくなっている。また、この溶融樹脂が固化する過程で不織布５がパネル本体３に貼り付いた状態となる。   Thereafter, the molten resin is cooled and solidified in the mold, so that the rod-shaped core material 7 is inserted into the panel body 3, and the rod-shaped core material 7 and the panel body 3 are integrated, and the absorbing member 13 is provided in the panel. The lower wall 13d and the bottom wall 13e are exposed on the surface of the main body 3, and are integrated with the panel main body 3 in a removable state. At this time, since the protruding portion 13 b is formed on the absorbing member 13, the protruding portion 13 b is engaged with the resin solidified around the protruding portion 13 b, and the absorbing member 13 is not easily detached from the panel body 3. In addition, the nonwoven fabric 5 is attached to the panel body 3 in the process of solidifying the molten resin.

そして、上記溶融樹脂を完全に固化させた後、両成形型を型開きしてブロー成形パネル１を脱型して自然冷却させるとともに不要なバリを除去する。   Then, after the molten resin is completely solidified, both molds are opened, the blow molded panel 1 is removed and allowed to cool naturally, and unnecessary burrs are removed.

上記溶融樹脂を固化させる際及びブロー成形パネル１を自然冷却させる際には、上述したようにパネル本体３の方が棒状心材７よりも大きく収縮する。このとき、棒状心材７は周囲の樹脂により保持されているだけであるため、該棒状心材７と周囲の樹脂との間にすべりが生じ、パネル本体３と一体化している吸収部材１３が上記棒状心材７の長手方向中心側（図３（ａ）に矢印イで示す）へ向かって変位する。この吸収部材１３の変位により該吸収部材１３の底壁１３ｅが棒状心材７の端部に近づいて上記隙間Ｒが小さくなる。これにより、パネル本体３の収縮量と棒状心材７の収縮量との差が吸収されて、棒状心材７の端部が吸収部材１３の底壁１３ｅに接触することはなく、吸収部材１３が棒状心材７から力を受けることはない。   When the molten resin is solidified and when the blow molded panel 1 is naturally cooled, the panel body 3 contracts more than the rod-shaped core material 7 as described above. At this time, since the rod-shaped core material 7 is only held by the surrounding resin, a slip occurs between the rod-shaped core material 7 and the surrounding resin, and the absorbing member 13 integrated with the panel body 3 has the above-described rod-shaped core. The core material 7 is displaced toward the center in the longitudinal direction (indicated by an arrow A in FIG. 3A). Due to the displacement of the absorbing member 13, the bottom wall 13 e of the absorbing member 13 approaches the end of the rod-shaped core member 7, and the gap R becomes small. Thereby, the difference between the contraction amount of the panel main body 3 and the contraction amount of the rod-shaped core material 7 is absorbed, and the end portion of the rod-shaped core material 7 does not contact the bottom wall 13e of the absorption member 13, and the absorption member 13 is rod-shaped. No power is received from the heartwood 7.

したがって、この実施形態に係るブロー成形パネル１によれば、従来のように、棒状心材の端部をパネル本体から突出させたり、パネル本体に凹部を形成しなくても、成形後に棒状心材７がパネル本体３内で突っ張るようになるのを確実に防ぐことができる。これにより、パネル本体３の形状が歪むのを回避しながら、ブロー成形パネル１の取り扱いを容易にすることができるとともに、見栄えを良好にすることができる。   Therefore, according to the blow-molded panel 1 according to this embodiment, the rod-shaped core material 7 can be formed after molding without forming the end portion of the rod-shaped core material from the panel main body or forming a recess in the panel main body, as in the prior art. It is possible to reliably prevent the panel body 3 from being stretched. Thereby, while avoiding that the shape of the panel main body 3 is distorted, the blow molded panel 1 can be easily handled and the appearance can be improved.

また、ブロー成形パネル１を製造する際には、棒状心材７と吸収部材１３とを一体化してから成形型にセットするようにしたので、両者７、１３を成形に容易にセットすることができる。   Further, when the blow molded panel 1 is manufactured, since the rod-shaped core material 7 and the absorbing member 13 are integrated and then set in the molding die, both 7 and 13 can be easily set for molding. .

また、上記ブロー成形パネル１を廃棄する際には、まず、吸収部材１３の孔部１３ｆに工具等を差し込み、該吸収部材１３をその中心線方向でパネル本体３の外側へ引っ張ることで吸収部材１３をパネル本体３から取り外す。この吸収部材１３を取り外すことでパネル本体３が開口し、該開口から棒状心材７の一端部が露出する。そして、棒状心材７の一端部を他端側へ向けて工具等で叩くことにより、棒状心材７を他端側から簡単に抜くことができる。これにより、パネル本体３を切断することなく、パネル本体３と棒状心材７とを容易に分別することができて、ブロー成形パネル１の廃棄コストを低減することができる。   When the blow-molded panel 1 is discarded, first, a tool or the like is inserted into the hole 13f of the absorbing member 13, and the absorbing member 13 is pulled outside the panel body 3 in the center line direction thereof. 13 is removed from the panel body 3. By removing the absorbing member 13, the panel body 3 is opened, and one end of the rod-shaped core member 7 is exposed from the opening. And the bar-shaped core material 7 can be easily pulled out from the other end side by hitting one end of the bar-shaped core material 7 toward the other end side with a tool or the like. Thereby, the panel main body 3 and the rod-shaped core material 7 can be easily separated without cutting the panel main body 3, and the disposal cost of the blow molded panel 1 can be reduced.

尚、上記パネル本体３と棒状心材７とを分別する場合には、図示しないが、棒状心材７の一端部に、例えば貫通孔を形成しておき、この貫通孔に工具等を引っ掛けて抜くようにしてもよい。こうすることで、棒状心材７をパネル本体３からより容易にかつ確実に抜くことができる。   In the case of separating the panel body 3 and the rod-shaped core material 7, although not shown, for example, a through hole is formed in one end portion of the rod-shaped core material 7, and a tool or the like is hooked and pulled out. It may be. By doing so, the rod-shaped core material 7 can be more easily and reliably pulled out from the panel body 3.

また、この実施形態では、棒状心材７を板状に形成したが、図４に示す変形例のように例えば円形断面を有する筒状に形成してもよく、また、図示しないが矩形断面の筒状や、中実棒状に形成してもよい。また、符号２１は、成形の際に棒状心材７を包み込んだ樹脂がぶつかってできた成形線を示している。   Further, in this embodiment, the rod-shaped core material 7 is formed in a plate shape, but it may be formed in, for example, a cylindrical shape having a circular cross section as in the modification shown in FIG. Or a solid bar shape. Reference numeral 21 denotes a forming line formed by colliding with the resin enclosing the rod-shaped core material 7 during molding.

さらに、棒状心材７の保持具により保持される部分に切欠を形成し、この切欠に係合する係合部を保持具に形成してもよい。これにより、棒状心材７の切欠を保持具の係合部に係合させるだけで、棒状心材７の位置決めを行うことができる。   Furthermore, a notch may be formed in a portion of the rod-shaped core material 7 held by the holder, and an engaging portion that engages with the notch may be formed in the holder. Thereby, the bar-shaped core material 7 can be positioned only by engaging the notch of the bar-shaped core material 7 with the engaging portion of the holder.

（発明の実施形態２）
図５は、本発明の実施形態２に係るブロー成形パネル１を示しており、この実施形態２のものは、棒状心材７の構造及び吸収部材１３の構造が一部異なるだけであるため、以下、実施形態１と同じ部分には同じ符号を付し異なる部分について詳細に説明する。 (Embodiment 2)
FIG. 5 shows a blow-molded panel 1 according to Embodiment 2 of the present invention. Since the structure of Embodiment 2 is only partially different in the structure of the rod-shaped core material 7 and the structure of the absorbing member 13, The same parts as those in the first embodiment are denoted by the same reference numerals, and different parts will be described in detail.

この実施形態２では、吸収部材１３に突出部及び孔部が形成されておらず、図６に示すように、吸収部材１３は完全にパネル本体３に埋め込まれている。この状態で、図７に示すように、吸収部材１３の底壁１３ｅと棒状心材７の端部との間には、所定の隙間Ｒが形成されている。   In the second embodiment, the protruding portion and the hole are not formed in the absorbing member 13, and the absorbing member 13 is completely embedded in the panel body 3 as shown in FIG. In this state, as shown in FIG. 7, a predetermined gap R is formed between the bottom wall 13 e of the absorbing member 13 and the end of the rod-shaped core material 7.

また、同図（ａ）に示すように、棒状心材７の端部側には、吸収部材１３を組み付ける際の目印となる切欠７ａが形成されている。この切欠７ａと吸収部材１３の開口側端部とを一致させることで、棒状心材７の端部と吸収部材１３の底壁１３ｅとの間に上記隙間Ｒが形成されて正規の状態で組み付けられるようになっている。   Further, as shown in FIG. 5A, a notch 7a is formed on the end side of the rod-shaped core material 7 as a mark when the absorbent member 13 is assembled. By aligning the notch 7a with the opening side end of the absorbing member 13, the gap R is formed between the end of the rod-shaped core member 7 and the bottom wall 13e of the absorbing member 13, and assembled in a normal state. It is like that.

また、各図における符号２１は溶融樹脂がぶつかってできたラインであり、このライン２１に対応する箇所に上記実施形態１と同様な溝を設けてもよい。   Moreover, the code | symbol 21 in each figure is a line which the molten resin collided, and you may provide the groove | channel similar to the said Embodiment 1 in the location corresponding to this line 21. FIG.

したがって、この実施形態に係るブロー成形パネル１によれば、実施形態１と同様に成形後のパネル本体３と棒状心材７との収縮量の差を吸収してパネル本体３の形状が歪むのを回避しながら、ブロー成形パネル１の取り扱いを容易にすることができるとともに、見栄えを良好にすることができる。   Therefore, according to the blow-molded panel 1 according to this embodiment, the shape of the panel body 3 is distorted by absorbing the difference in shrinkage between the molded panel body 3 and the rod-shaped core material 7 as in the first embodiment. While avoiding, handling of the blow-molded panel 1 can be facilitated and the appearance can be improved.

尚、この実施形態では、吸収部材１３を樹脂の射出成形品としているが、例えば図８に示す変形例のように、吸収部材１３をゴム等の弾性体で構成してもよい。この変形例では、吸収部材１３の筒状部分を浅く形成しておき、棒状心材７の端部を嵌入した状態で該棒状心材７の端部を吸収部材１３の底壁１３ｅに当接させる。そして、上記実施形態１と同様に、上記棒状心材７及び吸収部材１３をパネル本体３と一体化する。   In this embodiment, the absorbing member 13 is an injection molded product of resin, but the absorbing member 13 may be formed of an elastic body such as rubber as in a modification shown in FIG. In this modification, the cylindrical portion of the absorbing member 13 is formed shallow, and the end of the rod-shaped core 7 is brought into contact with the bottom wall 13e of the absorbing member 13 with the end of the rod-shaped core 7 fitted. Then, similarly to the first embodiment, the bar-shaped core material 7 and the absorbing member 13 are integrated with the panel body 3.

これにより、パネル本体３を成形後に冷却させる際に、吸収部材１３が棒状心材７の長手方向中心側へ向かって変位すると、吸収部材１３が棒状心材７の端部により圧縮されて弾性変形する。この吸収部材１３の変形によりパネル本体３と棒状心材７との収縮量の差が吸収される。これにより、棒状心材７がパネル本体３内で突っ張るようになるのを防ぐことができて、パネル本体３の形状が歪むのを回避することができる。   Thus, when the absorbing member 13 is displaced toward the center in the longitudinal direction of the rod-shaped core member 7 when the panel body 3 is cooled after molding, the absorbing member 13 is compressed by the end portion of the rod-shaped core member 7 and elastically deformed. Due to the deformation of the absorbing member 13, the difference in shrinkage between the panel body 3 and the rod-shaped core material 7 is absorbed. Thereby, it can prevent that the rod-shaped core material 7 comes to stretch in the panel main body 3, and it can avoid that the shape of the panel main body 3 is distorted.

また、吸収部材１３が弾性体であるため、該吸収部材１３の寸法誤差が大きくても、パネル本体３と棒状心材７との収縮量の差を狙い通りに吸収させることができる。このため、吸収部材１３の製造が容易になり、製造コストを低減することができる。   Moreover, since the absorbing member 13 is an elastic body, even if the dimensional error of the absorbing member 13 is large, a difference in contraction amount between the panel body 3 and the rod-shaped core material 7 can be absorbed as intended. For this reason, manufacture of the absorption member 13 becomes easy and manufacturing cost can be reduced.

また、この実施形態２では吸収部材１３をパネル本体３に完全に埋め込んだ状態としているが、上記実施形態１のように吸収部材１３の一部を露出されてパネル本体１から取り外し可能にしてもよい。   In the second embodiment, the absorbing member 13 is completely embedded in the panel main body 3. However, a part of the absorbing member 13 is exposed and removable from the panel main body 1 as in the first embodiment. Good.

また、上記実施形態１、２では、本発明を自動車のトランクルームに配置されるパネルに適用した場合について説明したが、本発明は自動車の部品以外の棒状心材を備えるブロー成形パネルに適用することができる。   In the first and second embodiments, the case where the present invention is applied to a panel disposed in a trunk room of an automobile has been described. However, the present invention may be applied to a blow molded panel including a rod-shaped core material other than parts of an automobile. it can.

また、上記各実施形態では、吸収部材１３を棒状心材７の両端部にそれぞれ配設しているが、吸収部材１３は棒状心材７の一方の端部にのみ配設してもよい。   Further, in each of the above embodiments, the absorbing member 13 is disposed at both ends of the rod-shaped core material 7, but the absorbing member 13 may be disposed only at one end portion of the rod-shaped core material 7.

さらに、棒状心材７は鋼板以外のアルミニウム合金や強化プラスチック等で構成してもよい。   Furthermore, the rod-shaped core material 7 may be made of an aluminum alloy other than a steel plate, reinforced plastic, or the like.

以上説明したように、本発明に係るブロー成形パネルは、例えば自動車のトランクルームに配置されるパネルに適している。   As described above, the blow-molded panel according to the present invention is suitable for a panel disposed in a trunk room of an automobile, for example.

ブロー成形パネルの角部近傍を下側から見た拡大斜視図である。It is the expansion perspective view which looked at the corner | angular part vicinity of a blow molding panel from the lower side. 実施形態１に係るブロー成形パネルを示し、（ａ）は上側から見た斜視図であり、（ｂ）は下側から見た斜視図である。The blow molded panel which concerns on Embodiment 1 is shown, (a) is the perspective view seen from the upper side, (b) is the perspective view seen from the lower side. （ａ）は図１におけるＡ−Ａ線断面図であり、（ｂ）は図３（ａ）におけるＢ−Ｂ線断面図であり、（ｃ）は図３（ａ）におけるＥ−Ｅ線断面図である。(A) is the AA sectional view taken on the line in FIG. 1, (b) is the BB sectional view in FIG. 3 (a), (c) is the EE sectional view in FIG. 3 (a). FIG. 実施形態１の変形例に係る図３（ｂ）相当図である。FIG. 3B is a diagram corresponding to FIG. 3B according to a modification of the first embodiment. 実施形態２に係るブロー成形パネルを示し、（ａ）は図２（ａ）相当図であり、（ｂ）は図２（ｂ）相当図である。The blow molded panel which concerns on Embodiment 2 is shown, (a) is a figure equivalent to FIG. 2 (a), (b) is a figure equivalent to FIG.2 (b). 実施形態２に係る図１相当図である。FIG. 3 is a view corresponding to FIG. 1 according to a second embodiment. 実施形態２に係り、（ａ）は図６におけるＣ−Ｃ線断面図であり、（ｂ）は図７（ａ）におけるＤ−Ｄ線断面図である。FIG. 7A is a cross-sectional view taken along line CC in FIG. 6 and FIG. 7B is a cross-sectional view taken along line DD in FIG. 7A according to the second embodiment. 実施形態２の変形例に係る図３（ａ）相当図である。FIG. 4 is a diagram corresponding to FIG. 3A according to a modification of the second embodiment.

符号の説明Explanation of symbols

１ ブロー成形パネル
３ パネル本体
７ 棒状心材
１３ 吸収部材
Ｒ 隙間
1 Blow-molded panel 3 Panel body 7 Bar-shaped core material 13 Absorbing member R Gap

Claims (4)

棒状心材がパネル本体内に一体にインサートされたブロー成形パネルであって、
成形後の冷却により生じるパネル本体と棒状心材との収縮量の差を吸収する吸収部材が上記棒状心材の端部に配置されてパネル本体と一体化されていることを特徴とするブロー成形パネル。 It is a blow molded panel in which a rod-shaped core material is integrally inserted in the panel body,
A blow-molded panel, wherein an absorbing member that absorbs a difference in shrinkage between the panel main body and the bar-shaped core material generated by cooling after molding is disposed at an end of the bar-shaped core material and integrated with the panel main body. 請求項１に記載のブロー成形パネルにおいて、
吸収部材はパネル本体から取り外し可能とされ、
上記吸収部材を取り外すことで棒状心材の端部がパネル本体から露出するように構成されていることを特徴とするブロー成形パネル。 The blow molded panel according to claim 1,
The absorbent member is removable from the panel body,
A blow-molded panel characterized in that the end of the rod-shaped core is exposed from the panel body by removing the absorbing member. 請求項１又は２に記載のブロー成形パネルにおいて、
吸収部材は棒状心材の端部が嵌入する有底の筒状に形成され、
上記棒状心材の端部と上記吸収部材の底壁との間に所定の隙間が形成されていることを特徴とするブロー成形パネル。 In the blow molded panel according to claim 1 or 2,
The absorbing member is formed in a bottomed cylindrical shape into which the end of the rod-shaped core material is fitted,
A blow-molded panel, wherein a predetermined gap is formed between an end of the rod-shaped core and the bottom wall of the absorbing member. 請求項１又は２に記載のブロー成形パネルにおいて、
吸収部材は弾性体であることを特徴とするブロー成形パネル。
In the blow molded panel according to claim 1 or 2,
The blow-molded panel, wherein the absorbing member is an elastic body.
JP2004011947A 2004-01-20 2004-01-20 Blow molded panel Pending JP2005205621A (en)

Priority Applications (1)

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JP2004011947A JP2005205621A (en) 2004-01-20 2004-01-20 Blow molded panel

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Application Number Priority Date Filing Date Title
JP2004011947A JP2005205621A (en) 2004-01-20 2004-01-20 Blow molded panel

Publications (1)

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JP2005205621A true JP2005205621A (en) 2005-08-04

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Family Applications (1)

Application Number Title Priority Date Filing Date
JP2004011947A Pending JP2005205621A (en) 2004-01-20 2004-01-20 Blow molded panel

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Country Link
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018176642A (en) * 2017-04-19 2018-11-15 キョーラク株式会社 Structure

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018176642A (en) * 2017-04-19 2018-11-15 キョーラク株式会社 Structure
JP6989753B2 (en) 2017-04-19 2022-01-12 キョーラク株式会社 Structure

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