JPH08156022A - Insert of synthetic resin - Google Patents
Insert of synthetic resinInfo
- Publication number
- JPH08156022A JPH08156022A JP6331505A JP33150594A JPH08156022A JP H08156022 A JPH08156022 A JP H08156022A JP 6331505 A JP6331505 A JP 6331505A JP 33150594 A JP33150594 A JP 33150594A JP H08156022 A JPH08156022 A JP H08156022A
- Authority
- JP
- Japan
- Prior art keywords
- insert
- wall surface
- foam
- closed space
- hinge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Vehicle Step Arrangements And Article Storage (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、発泡成形で発泡体と一
体化する補強用芯材たる合成樹脂製インサートに関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a synthetic resin insert which is a reinforcing core material integrated with a foam by foam molding.
【０００２】[0002]
【従来の技術】周知のように、ポリウレタンフォーム等
の発泡性合成樹脂により種々の自動車用内装品が成形さ
れている。この自動車用内装品（アームレスト，コンソ
ールボックス等）は、発泡体を使ってクッション性，ソ
フト感等の感触を高めながらも一定の機械的強度を要す
ることから、内部に補強用インサートを配設してインサ
ートとの一体成形が行われる。インサートは、例えばポ
リプロピレン等からなる射出成形品であり、これを特開
平１−３６４１５号公報に示されるように分割型のキャ
ビティ内にセット後、発泡樹脂原料（以下、発泡原料と
いう。）をキャビティ内に注入し発泡成形することで発
泡成形品中に埋設される。2. Description of the Related Art As is well known, various automobile interior parts are molded from a foamable synthetic resin such as polyurethane foam. This automotive interior component (armrest, console box, etc.) uses foam to improve cushioning and softness, but requires a certain level of mechanical strength. Integrated with the insert. The insert is, for example, an injection-molded product made of polypropylene or the like. After the insert is set in a cavity of a split mold as disclosed in JP-A-1-36415, a foam resin raw material (hereinafter, referred to as foam raw material) is cavity. It is embedded in a foam-molded product by injecting it and foam-molding.
【０００３】ところで、アームレストのような発泡成形
品では、インサート９と一体に数本の取付軸９２が形成
され、これら取付軸９２はそれぞれ発泡成形品の取付面
から突き出すようにしている（図７）。斯る取付軸９２
は、相手部材たるドアトリム等の取付孔に嵌挿された
後、取付軸先端部にねじ止めや超音波ウェルダーで熱カ
シメ等が施されることによって、発泡成形品（ここでは
アームレスト）を相手部材（ここではドアトリム）へ組
付ける機能を発揮する。By the way, in a foam molded product such as an armrest, several mounting shafts 92 are formed integrally with the insert 9, and these mounting shafts 92 are each projected from the mounting surface of the foam molded product (FIG. 7). ). Such mounting shaft 92
After being inserted into a mounting hole such as a door trim, which is a mating member, the end of the mounting shaft is screwed or heat swaged with an ultrasonic welder, so that the foam molded product (here, armrest) is mated. Demonstrate the function of assembling to (the door trim here).
【０００４】[0004]
【発明が解決しようとする課題】しかるに、所望の発泡
成形品を得るため、前述の如くインサートをそのまま分
割型中にセットし発泡成形を行うと、発泡原料が薄い皮
のようなバリとなって取付軸先端部の表面に付着する欠
陥が現われた。このようなバリは、熱カシメ等をする際
に邪魔で取除かねばならず、その除去に手間がかかり、
生産性を低下させた。組付け相手部材へねじ止めする場
合は、取付軸には取付軸と同心状の軸孔を設けたボスが
用いられるが、発泡樹脂がこの軸孔を覆ったり詰まらせ
たりすると、とりわけ困難を極めた。斯る対策の一つ
に、図８のように、取付軸９２周りを補強用リブ９３を
介在させて筒状仕切壁９４で囲う方法が考えられる（対
策１）。しかし、このような部分を形成するインジェク
ション成形のインサート型９５は、細長い形状となり
（図９）、成形時、射出圧力の繰返し荷重によって根元
部にクラックｋが発生し易い状況にあった。また、この
部分は水管等により冷却することが殆ど不可能であり、
量産化した場合、かなりの高温となるのは避けられず、
離型後に製品変形を招き易かった。故に、変形量を少し
でも抑えるために、型内冷却時間を延ばさざるを得なか
った。こうした不具合の解消策として、図１０のような
インサート９ａが考えられる（対策２）。図示のごとく
短めの取付軸９６とし、インサート用金型の細長いブロ
ックを低くすることで、耐久性を向上させるものであ
る。ところが、耐久性は改善されるものの、発泡成形過
程で急激な発泡層の肉厚変化が伴う結果、今度は、発泡
体Ｕ内に品質不良となるボイド９７ができ易くなってい
た。加えて、上記いずれの対策も、バリ対策が完全とは
いかなかった。図８は発泡型９９ａ，９９ｂにセットさ
れたインサート９を示すが、補強用リブ９３，筒状仕切
壁９４の上縁と型面９８との線接触によってシールする
ために、インサートの変形，寸法バラツキによって、発
泡成形時に発泡型９９ｂとのシール面に隙間ができるこ
とがあった。斯る場合、この隙間を通って入り込んだ発
泡原料Ｆはバリになり、やはり発泡成形品の相手部材へ
の組付け作業を厄介にした。However, in order to obtain a desired foam-molded article, when the insert is set as it is in the split mold and foam-molded as described above, the foam raw material becomes a burr like a thin skin. Defects adhering to the surface of the tip of the mounting shaft appeared. Such burrs must be removed in the way when heat caulking is performed, and it takes time to remove them.
Reduced productivity. When screwing to a mating member, the mounting shaft uses a boss that has a shaft hole that is concentric with the mounting shaft.However, if foam resin covers or blocks this shaft hole, it will be extremely difficult. It was As one of such measures, as shown in FIG. 8, a method of surrounding the mounting shaft 92 with a tubular partition wall 94 with a reinforcing rib 93 interposed (countermeasure 1) can be considered. However, the injection-molding insert mold 95 that forms such a portion has an elongated shape (FIG. 9), and during molding, cracks k are likely to occur at the root part due to repeated load of injection pressure. Also, it is almost impossible to cool this part with a water pipe,
When mass-produced, it is unavoidable that the temperature will be quite high.
It was easy to cause product deformation after mold release. Therefore, in order to suppress the amount of deformation as much as possible, the cooling time in the mold had to be extended. As a solution to such a problem, an insert 9a as shown in FIG. 10 can be considered (Countermeasure 2). As shown in the figure, a shorter mounting shaft 96 is used, and the elongated block of the insert mold is lowered to improve durability. However, although the durability is improved, as a result of a rapid change in the thickness of the foam layer during the foam molding process, voids 97 of poor quality are likely to be formed in the foam U this time. In addition, none of the above countermeasures was perfect. FIG. 8 shows the insert 9 set in the foaming molds 99a and 99b. In order to seal by the line contact between the reinforcing rib 93, the upper edge of the tubular partition wall 94 and the mold surface 98, the deformation and size of the insert are shown. Due to variations, a gap may be formed on the sealing surface with the foam mold 99b during foam molding. In such a case, the foaming raw material F that has entered through this gap becomes a burr, which also makes the work of assembling the foamed molded product to the counterpart member cumbersome.
【０００５】本発明は上記問題点を克服するもので、樹
脂成形し易く且つ発泡成形で取付軸周りにバリが付着す
ることのない合成樹脂製インサートを提供することを目
的とする。The present invention overcomes the above problems, and an object of the present invention is to provide a synthetic resin insert which is easily resin-molded and has no burr attached around the mounting shaft by foam molding.
【０００６】[0006]
【課題を解決するための手段】第一発明の要旨は、相手
部材への取付軸を備え、発泡成形で発泡体と一体化する
合成樹脂製インサートであって、一側に前記取付軸を立
設した受盤部と、該受盤部の一側端からヒンジ部を介し
て延設した覆蓋部と、前記受盤部の前記ヒンジ部を除く
他の端縁からインサートのベース面に向かって配設さ
れ、一端が前記受盤部により閉鎖された溝状壁面と、を
具備して、前記ヒンジ部を支点に覆蓋部が前記溝状壁面
の頂部に被着されることにより、該覆蓋部、前記受盤部
及び溝状壁面によってインサートの一部に閉空間を構成
すると共に該閉空間の外面に取付軸を外方に向かって設
けたことを特徴とする合成樹脂製インサートにある。こ
こで、「閉空間」は、覆蓋部と溝状壁面と受盤部とで中
空ボックス体が形成できればよく、気密性は要しない。The gist of the first invention is a synthetic resin insert which is equipped with a shaft for attachment to a mating member and is integrated with a foam body by foam molding, wherein the mounting shaft is erected on one side. From the other end edge of the receiving plate portion excluding the hinge portion toward the base surface of the insert, the receiving plate portion provided, the cover lid portion extending from one side end of the receiving plate portion via the hinge portion. A grooved wall surface that is disposed and has one end closed by the receiving plate portion, and the cover lid portion is attached to the top of the grooved wall surface with the hinge portion as a fulcrum, whereby the cover lid portion is provided. In the synthetic resin insert, a closed space is formed in a part of the insert by the receiving plate portion and the groove-like wall surface, and a mounting shaft is provided outward on an outer surface of the closed space. Here, the “closed space” is not required to be airtight as long as the hollow box body can be formed by the cover lid portion, the groove-shaped wall surface and the receiving plate portion.
【０００７】第二発明の要旨は、第一発明に係る取付軸
を取付け用ボスで構成するものである。第三発明では、
第一発明又は第二発明で、覆蓋部の先端部分に突起体を
設け、更に、該覆蓋部の溝状壁面への被着時に、前記突
起体が当接する箇所に該突起体と嵌合する止孔を形成し
たものである。また、第四発明は、第一発明〜第三発明
に係る溝状壁面の湾状窪み内に補強リブを配設するもの
である。The gist of the second invention is that the mounting shaft according to the first invention comprises a mounting boss. In the third invention,
In the first invention or the second invention, a projection is provided at a tip end portion of the cover lid, and when the cover lid is attached to the groove-shaped wall surface, the projection is fitted to a position where the projection abuts. A stop hole is formed. A fourth aspect of the invention is to dispose a reinforcing rib in the bay-shaped recess of the grooved wall surface according to the first aspect to the third aspect.
【０００８】[0008]
【作用】本第一発明の合成樹脂製インサートによれば、
取付軸を支える受盤部が板状の面構成であり、発泡成形
時には発泡型の型面に全面で当接するので、発泡成形
時、発泡原料の取付軸への侵入は阻止される。第二発明
のように、取付軸を取付け用ボスで構成しても、発泡成
形でボス内にバリが付着することはないので、相手部材
へのねじ止めによる組付けでも手間取らない。また、取
付軸は受盤部で支えられ、取付軸長さを短くできるの
で、成形時に射出圧力の繰返し荷重が加わっても、その
根元部にクラックが発生する虞れはない。そして、取付
軸の根元で、受盤部と溝状壁面と覆蓋部とで閉空間を形
成するので、取付軸真下のベース面周りでの発泡層の肉
厚変化は小さくなり、発泡成形過程でのボイドの発生は
ない。第三発明のごとく、突起体とこれに嵌合する止孔
を設けると、閉空間が確実に保持できるので、組付けや
発泡成形が行ない易くなる。更に、第四発明のごとく補
強用リブを配設すると、閉空間の変形が抑えられ製品の
形状安定に貢献する。According to the synthetic resin insert of the first aspect of the present invention,
Since the receiving plate portion that supports the mounting shaft has a plate-like surface configuration and entirely contacts the mold surface of the foam mold during foam molding, the foam raw material is prevented from entering the mounting shaft during foam molding. Even if the mounting shaft is formed of the mounting boss as in the second aspect of the invention, burr does not adhere to the inside of the boss due to foam molding, and therefore it does not take much time to assemble the mating member by screwing. Further, since the mounting shaft is supported by the receiving plate and the length of the mounting shaft can be shortened, even if a repeated load of injection pressure is applied at the time of molding, there is no possibility that a crack will occur at the root portion. Further, at the base of the mounting shaft, since the closed space is formed by the receiving plate portion, the groove-shaped wall surface and the cover portion, the change in the thickness of the foam layer around the base surface directly below the mounting shaft becomes small, and in the foam molding process. No void is generated. As in the third aspect of the invention, when the protrusion and the stop hole that fits into the protrusion are provided, the closed space can be reliably held, so that assembly and foam molding can be easily performed. Further, when the reinforcing ribs are arranged as in the fourth aspect of the invention, the deformation of the closed space is suppressed and the shape of the product is stabilized.
【０００９】[0009]
【実施例】以下、本発明に係る合成樹脂製インサートを
実施例に基づいて詳述する。図１〜図６は合成樹脂製イ
ンサートＡ（以下、単にインサートという。）の一実施
例を示すもので、図１はインサートの取付軸付近の拡大
斜視図、図２は発泡成形時における取付軸周りの拡大断
面図、図３は図１のＸ−Ｘ線矢視図、図４は図３のＹ矢
視図、図５は覆蓋部の先端部分と止孔周りの拡大断面
図、図６はインサートの射出成形型である。アームレス
ト用インサートに適用するものである。EXAMPLES The synthetic resin insert according to the present invention will be described in detail below with reference to examples. 1 to 6 show one embodiment of a synthetic resin insert A (hereinafter, simply referred to as an insert), FIG. 1 is an enlarged perspective view of the vicinity of the mounting shaft of the insert, and FIG. 2 is a mounting shaft at the time of foam molding. 6 is an enlarged cross-sectional view of the surroundings, FIG. 3 is a view taken along the line XX of FIG. 1, FIG. 4 is a view of the arrow Y of FIG. 3, and FIG. Is an insert injection mold. It is applied to armrest inserts.
【００１０】インサートＡは、ポリプロピレンやフィラ
ー強化ポリプロピレン（ＰＰＦ）等からなる合成樹脂製
の射出成形品で、後述のヒンジ部５を除けば全て２ｍｍ
程度の厚みで造られる。全体の基本的形状は、図７に係
るインサート９と同じで、ベース面９１の両サイドでア
ームレスト形状に沿うようにＵ字状に湾曲させている。
インサートＡを埋設し発泡成形して出来たアームレスト
の発泡成形品を、相手部材にねじ止め固定できるよう、
ここでは、取付軸４としての取付け用ボス４ａがインサ
ート外周縁寄りに設けられている。The insert A is an injection-molded product made of synthetic resin such as polypropylene or filler reinforced polypropylene (PPF), which is 2 mm in all except the hinge portion 5 described later.
It is made with a certain thickness. The overall basic shape is the same as that of the insert 9 according to FIG. 7, and is curved in a U shape on both sides of the base surface 91 so as to follow the armrest shape.
In order to fix the foamed molded product of the armrest made by embedding the insert A and foaming it to the mating member,
Here, a mounting boss 4a as the mounting shaft 4 is provided near the outer peripheral edge of the insert.
【００１１】これらの取付け用ボス４ａは、図１，図３
に示すごとく、インサートＡのベース面６より浮上がっ
た上方地点で、受盤部１によって起立状態にて支持され
る。受盤部１は、図４のような板形状で、縦Ｌ1 が約２
０ｍｍ，横Ｌ2 が約２５ｍｍである。These mounting bosses 4a are shown in FIGS.
As shown in (3), it is supported by the receiving part 1 in an upright state at a position above the base surface 6 of the insert A. The receiving plate 1 has a plate shape as shown in FIG. 4 and has a length L1 of about 2
0 mm and lateral L2 is about 25 mm.
【００１２】取付け用ボス４ａを支えた受盤部１の一側
端には、一体成形で造られるヒンジ部５を介して覆蓋部
２が延設される（図３）。ヒンジ部５は、射出成形品を
形成する合成樹脂の厚みをこの部分だけ薄肉形成するこ
とで、ヒンジ機能を帯有する。覆蓋部２は、定幅で、後
述するように溝状壁面３への被着後、ベース面６の一部
を構成できるよう、それに合わせた弓なり状板になって
いる。覆蓋部１の先端部分の内面側には、ストッパとな
る突起体２１が設けられる。符号２２は、ヒンジ部５付
近の覆蓋部１に設けられるつまみを示す。ここで、上記
ヒンジ部５の肉厚は、０．３〜０．８ｍｍが好ましく、
更に好ましくはヒンジ部５に反力をもたせるため、０．
５〜０．８ｍｍの範囲となる。０．５〜０．８ｍｍの範
囲にすると、インサートＡの成形でヒンジ部５の樹脂通
過によって生じる抵抗が小さくなり、射出圧力も低く抑
えられるようになる。ただ、覆蓋部１を何回も屈曲使用
する場合には、ヒンジ部５の肉厚は０．３〜０．５ｍｍ
の範囲とされる。尚、ポリプロピレンやフィラー強化ポ
リプロピレン（ＰＰＦ）はヒンジ特性を有するため、イ
ンサートＡをこれらの材料で造るとヒンジ部によい。At one end of the receiving plate 1 supporting the mounting boss 4a, a cover 2 is extended via a hinge 5 formed by integral molding (FIG. 3). The hinge part 5 has a hinge function by thinly forming the thickness of the synthetic resin forming the injection-molded product. The cover portion 2 has a constant width, and is a bow-shaped plate adapted to it so as to form a part of the base surface 6 after being attached to the grooved wall surface 3 as described later. A protrusion 21 serving as a stopper is provided on the inner surface side of the tip portion of the cover portion 1. Reference numeral 22 indicates a knob provided on the cover lid portion 1 near the hinge portion 5. Here, the thickness of the hinge portion 5 is preferably 0.3 to 0.8 mm,
More preferably, in order to give the hinge part 5 a reaction force,
The range is 5 to 0.8 mm. When the thickness is in the range of 0.5 to 0.8 mm, the resistance generated by the resin passing through the hinge portion 5 in the molding of the insert A becomes small, and the injection pressure can be suppressed low. However, when the cover portion 1 is bent and used many times, the thickness of the hinge portion 5 is 0.3 to 0.5 mm.
Range. Since polypropylene and filler reinforced polypropylene (PPF) have a hinge characteristic, it is preferable that the insert A is made of these materials for the hinge portion.
【００１３】上記受盤部１で、覆蓋部２が取着される一
側端を除いた他の端縁には、緩やかなＵ字状カーブで取
囲んだ溝状壁面３が接合する（図１）。溝状壁面３は、
受盤部１のヒンジ部５を除く他の端縁からインサートＡ
のベース面６に向かって配設され、一端が受盤部１によ
って閉鎖された状態にある。すなわち、溝状壁面３は、
上方地点で配された受盤部１とベース面６とをつなぐ連
結壁になっている。溝状壁面３の幅は前記覆蓋部２の幅
に略等しく、図３のごとく、覆蓋部２がヒンジ部５を支
点に折曲し溝状壁面３の頂部に被着すると、覆蓋部２と
溝状壁面３と受盤部１とで閉空間Ｓを形成する（図
２）。A grooved wall surface 3 surrounded by a gentle U-shaped curve is joined to the other edge of the receiving plate portion 1 except one end to which the cover lid portion 2 is attached (see FIG. 1). The grooved wall surface 3 is
Insert A from the other edge of the receiving part 1 excluding the hinge part 5
Is disposed toward the base surface 6 and is closed at one end by the receiving plate portion 1. That is, the grooved wall surface 3 is
It is a connecting wall that connects the receiving plate 1 and the base surface 6 arranged at the upper point. The width of the groove-like wall surface 3 is substantially equal to the width of the covering lid portion 2, and as shown in FIG. 3, when the covering lid portion 2 bends around the hinge portion 5 as a fulcrum and is attached to the top of the groove-like wall surface 3, The grooved wall surface 3 and the receiving plate 1 form a closed space S (FIG. 2).
【００１４】覆蓋部２の溝状壁面３の被着にあたって、
突起体２１が当接する溝状壁面３（厳密には、溝状壁面
３とベース面６との境界部分）には、突起体２１と嵌合
する止孔３１が設けられる。突起体２１と止孔３１の位
置関係は、図５のように多少干渉し合うようにしてい
る。従って、覆蓋部２を少し変形させて突起体２１を止
孔３１に嵌め込む。一旦、突起体２１と止孔３１とが嵌
合すれば、突起体２１が止孔３１周りのベース面６に係
止され且つヒンジ部５の反力が作用するので、上記閉空
間Ｓが維持されるかたちとなる（図５の鎖線）。突起体
２１，止孔３１の具体的数値としては、止孔３１の開口
Ｗが約５ｍｍに対し、突起体２１の肉厚を１．５ｍｍ〜
２．０ｍｍとし、この干渉寸法ｈを１．５〜２．５ｍｍ
とするのが好ましい。突起体２１の横幅（図５で紙面の
垂直方向）は、５〜１０ｍｍ位が好適である。かくし
て、閉空間Ｓができるのであるが、このとき、折曲した
覆蓋部２はベース面６の一部を形成し、ベース面６が全
体的になだらかになる。そして、覆蓋部２が溝状壁面３
に被着されることで、図２のごとく、発泡成形時に発泡
原料Ｆが埋まる肉厚Ｔは略全域に渡たって一様になる。
図２中、符号Ｍ1 ，Ｍ2 は発泡型、符号Ｊは表皮を示
す。When the groove-like wall surface 3 of the cover 2 is attached,
The groove-like wall surface 3 with which the protrusion 21 abuts (strictly speaking, the boundary portion between the groove-like wall surface 3 and the base surface 6) is provided with a stop hole 31 that fits into the protrusion 21. The positional relationship between the protrusion 21 and the stop hole 31 is such that they interfere with each other as shown in FIG. Therefore, the cover 21 is slightly deformed to fit the protrusion 21 into the stop hole 31. Once the projection 21 and the stop hole 31 are fitted, the projection 21 is locked to the base surface 6 around the stop hole 31 and the reaction force of the hinge portion 5 acts, so that the closed space S is maintained. This is what is done (dashed line in Fig. 5). Specific values of the projection 21 and the stop hole 31 are as follows: the opening W of the stop hole 31 is about 5 mm, and the wall thickness of the projection 21 is 1.5 mm to
2.0 mm, and this interference dimension h is 1.5 to 2.5 mm
Is preferred. The lateral width of the protrusion 21 (the direction perpendicular to the paper surface in FIG. 5) is preferably about 5 to 10 mm. Thus, the closed space S is formed, but at this time, the bent cover lid portion 2 forms a part of the base surface 6, and the base surface 6 becomes gentle as a whole. Then, the cover portion 2 has the grooved wall surface 3
As shown in FIG. 2, the wall thickness T in which the foaming raw material F is filled during foam molding becomes uniform over almost the entire area.
In FIG. 2, reference numerals M1 and M2 indicate a foam type, and reference numeral J indicates a skin.
【００１５】符号７は、溝状壁面３の中央で一端を受盤
部１裏面に当接させ、他端をベース面６に向って配設す
る補強リブを示す。インサートＡを埋設して発泡成形を
行う場合や、出来た発泡成形品を組付ける際、閉空間Ｓ
ができたことによる変形を防ぐためにある。覆蓋部２と
溝状壁面３と受盤部１とで閉空間Ｓが形成されると、補
強リブ７は、この閉空間内に収納される。符号８はイン
サートＡの適当な位置に複数設けられる開口穴である
（図２）。ポリプロピレン等は発泡体（例えばポリウレ
タン）との接着が悪いために、インサートＡはアンカー
効果によって発泡体との一体化が図られ、開口穴８はそ
のために形成されている。Reference numeral 7 denotes a reinforcing rib having one end in contact with the back surface of the receiving plate 1 at the center of the grooved wall surface 3 and the other end disposed toward the base surface 6. When embedding the insert A and performing foam molding, or when assembling the resulting foam molded product, the closed space S
This is to prevent the deformation caused by the occurrence of When the closed space S is formed by the cover portion 2, the groove-shaped wall surface 3, and the receiving plate portion 1, the reinforcing rib 7 is housed in the closed space. Reference numeral 8 is a plurality of opening holes provided at appropriate positions of the insert A (FIG. 2). Since polypropylene or the like has poor adhesion to a foam (for example, polyurethane), the insert A is integrated with the foam due to the anchor effect, and the opening hole 8 is formed therefor.
【００１６】上述のごとく、一つの取付け用ボス４ａ周
りの受盤部１，覆蓋部２，溝状壁面３，ヒンジ部５等に
ついて説明してきたが、インサートＡに設けられる複数
の取付け用ボス４ａの真下には、斯る閉空間Ｓが必要に
応じて随所に形成される。As described above, the receiving plate portion 1, the cover portion 2, the groove-like wall surface 3, the hinge portion 5 and the like around one mounting boss 4a have been described, but a plurality of mounting bosses 4a provided on the insert A are described. The closed space S is formed directly under the position where necessary.
【００１７】このように構成した合成樹脂製インサート
Ａは、取付け用ボス４ａが短くなり、取付け用ボス４ａ
が長いために引き起こすインサート型の取付軸根元での
クラックｋは解消する（図９参照）。そして、取付け用
ボス４ａを短くしても、取付け用ボス４ａの真下におい
て覆蓋部２がベース面６の形状を保形し、取付け用ボス
４ａ〜ベース面６間に閉空間Ｓを形成するので、発泡層
の肉厚変化は少なく、ボイド発生の懸念はない。また、
斯るインサートＡは、図６のような分割型Ｎ1 ，Ｎ2 を
用いて製造可能で、型構造が単純で且つ冷却水管Ｐも取
付け用ボス４ａに係るキャビティｃ周りに適切に配設で
きるので、冷却効率が良く、成形サイクルが延び成形コ
ストがアップするといった従来の欠点は解消される。In the synthetic resin insert A thus constructed, the mounting boss 4a is shortened, and the mounting boss 4a is reduced.
The crack k at the root of the insert type mounting shaft caused by the long gap is eliminated (see FIG. 9). Even if the mounting boss 4a is shortened, the cover portion 2 maintains the shape of the base surface 6 immediately below the mounting boss 4a, and a closed space S is formed between the mounting boss 4a and the base surface 6. In addition, there is little change in the thickness of the foam layer, and there is no concern about the occurrence of voids. Also,
Since such an insert A can be manufactured using the split molds N1 and N2 as shown in FIG. 6, the mold structure is simple, and the cooling water pipe P can be appropriately arranged around the cavity c related to the mounting boss 4a. The conventional drawbacks such as high cooling efficiency, extended molding cycle and increased molding cost are eliminated.
【００１８】そして、本インサートＡを使用して発泡成
形を行うと、発泡型Ｍ2 の型面ｍ2に受盤部１全面が当
接するので、発泡原料の取付け用ボス４ａへの侵入を確
実に阻止できる（図２）。従来、補強用リブ，筒状仕切
壁はそれらの上縁が型面と線接触することで、発泡原料
の侵入を阻止していたが、それら上縁を発泡原料が乗り
越えると、その先は空洞で抵抗がないため、いとも簡単
に発泡原料が充満する不具合を招いていた。これに対
し、本実施例のインサートＡは受盤部１の大きさ全面で
シールする構成であるので、シール確保が万全となる。
たとえ、インサートＡの変形やその大きさにバラツキが
でても、線接触と異なり阻止できる面領域は広く、受盤
部１と型面との当接面が取付け用ボス４ａ内に入り込も
うとする発泡原料Ｆをシャットアウトする（図２）。When foam molding is performed using the insert A, the entire surface of the receiving plate 1 comes into contact with the mold surface m2 of the foam mold M2, so that the invasion of the foam raw material into the mounting boss 4a is reliably prevented. Yes (Figure 2). Conventionally, reinforcing ribs and tubular partition walls prevent the invasion of foaming raw material by their upper edges making line contact with the mold surface. Since there is no resistance, the problem of filling the foaming raw material was very easy. On the other hand, since the insert A of the present embodiment is configured to seal the entire surface of the receiving plate portion 1, the seal can be secured securely.
Even if the insert A is deformed or its size varies, unlike the line contact, the surface area that can be blocked is wide, and the contact surface between the receiving plate 1 and the mold surface tries to enter into the mounting boss 4a. The foaming raw material F is shut out (FIG. 2).
【００１９】尚、本発明においては、前記実施例に示す
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。実施例に示したアームレストの他、コン
ソールリッドその他のインサートを埋設した発泡成形品
を製造するのに広く使用できる。斯る場合、発泡成形品
の使用目的，所要強度，用途等に応じて各部の形状，材
料等を変更できることは言うまでもない。実施例では、
取付け用ボス４ａとしたが、中実の取付軸にもちろん適
用できる。The present invention is not limited to those shown in the above embodiments, but can be variously modified within the scope of the present invention depending on the purpose and application. In addition to the armrests shown in the embodiments, the present invention can be widely used to manufacture a foam molded product in which a console lid and other inserts are embedded. In such a case, it goes without saying that the shape, material, etc. of each part can be changed according to the purpose of use, required strength, application, etc. of the foamed molded product. In the example,
Although the mounting boss 4a is used, it is of course applicable to a solid mounting shaft.
【００２０】[0020]
【発明の効果】以上のごとく、本発明に係る合成樹脂製
インサートは、樹脂成形し易く、且つ、受盤部の型面へ
の面接触によって、発泡成形時における発泡原料の取付
軸への侵入を阻止してバリ付着を防ぎ、更に、取付軸の
下方に閉空間を形成することで、ボイドができないよう
にするなど、品質確保，生産性向上等に優れた効果を発
揮する。As described above, the synthetic resin insert according to the present invention is easily resin-molded, and due to the surface contact with the mold surface of the receiving part, the foaming raw material enters the mounting shaft during foam molding. By preventing the burr from adhering, and by forming a closed space below the mounting shaft, voids can be prevented, and excellent effects such as quality assurance and productivity improvement can be achieved.
【図１】本発明に係るインサートの取付軸付近の拡大斜
視図である。FIG. 1 is an enlarged perspective view around a mounting shaft of an insert according to the present invention.
【図２】発泡成形時における取付軸周りの拡大断面図で
ある。FIG. 2 is an enlarged cross-sectional view around a mounting shaft during foam molding.
【図３】図１のＸ−Ｘ線矢視図である。FIG. 3 is a view taken along line XX of FIG.
【図４】図３のＹ矢視図である。FIG. 4 is a view on arrow Y of FIG.
【図５】突起体と止孔周りの拡大断面図である。FIG. 5 is an enlarged cross-sectional view around a protrusion and a stop hole.
【図６】インサートの射出成形型である。FIG. 6 is an insert injection mold.
【図７】従来タイプのインサートの全体斜視図である。FIG. 7 is an overall perspective view of a conventional type insert.
【図８】発泡成形過程にある従来タイプのインサートに
係る取付軸周りの部分断面図である。FIG. 8 is a partial cross-sectional view around a mounting shaft according to a conventional type insert in a foam molding process.
【図９】図８の取付軸付近の射出成形用インサート型の
斜視図である。9 is a perspective view of an injection-molding insert mold near the mounting shaft in FIG. 8. FIG.
【図１０】従来の別仕様のインサートに係る取付軸周り
の部分断面図である。FIG. 10 is a partial cross-sectional view around a mounting shaft according to a conventional insert of another specification.
１ 受盤部 ２ 覆蓋部 ２１ 突起体 ３ 溝状壁面 ３１ 止孔 ４ 取付軸 ４ａ 取付け用ボス ５ ヒンジ部 ６ ベース面 ７ 補強リブ Ａ 合成樹脂製インサート Ｓ 閉空間 Ｕ 発泡体 DESCRIPTION OF SYMBOLS 1 Receptacle part 2 Cover part 21 Projection body 3 Groove-shaped wall surface 31 Stop hole 4 Mounting shaft 4a Mounting boss 5 Hinge part 6 Base surface 7 Reinforcing rib A Synthetic resin insert S Closed space U Foam
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｂ２９Ｌ 31:58 ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification code Internal reference number FI technical display location B29L 31:58
Claims (4)
発泡体と一体化する合成樹脂製インサートであって、 一側に前記取付軸を立設した受盤部（１）と、該受盤部
の一側端からヒンジ部を介して延設した覆蓋部（２）
と、前記受盤部の前記ヒンジ部を除く他の端縁からイン
サートのベース面に向かって配設され、一端が前記受盤
部により閉鎖された溝状壁面（３）と、を具備して、前
記ヒンジ部を支点に覆蓋部が前記溝状壁面の頂部に被着
されることにより、該覆蓋部、前記受盤部及び溝状壁面
によってインサートの一部に閉空間を構成すると共に該
閉空間の外面に取付軸を外方に向かって設けたことを特
徴とする合成樹脂製インサート。1. A receiving part (1) having a mounting shaft for a mating member, which is a synthetic resin insert integrated with a foam body by foam molding, wherein the mounting shaft is erected on one side, A cover (2) extending from one end of the receiving plate via a hinge
And a groove-like wall surface (3) arranged from the other edge of the receiving plate portion excluding the hinge portion toward the base surface of the insert and having one end closed by the receiving plate portion. The cover portion is attached to the top of the grooved wall surface with the hinge portion as a fulcrum to form a closed space in a part of the insert by the cover lid portion, the receiving plate portion and the grooved wall surface. A synthetic resin insert characterized in that a mounting shaft is provided outward on the outer surface of the space.
請求項１記載の合成樹脂製インサート。2. The synthetic resin insert according to claim 1, wherein the mounting shaft comprises a mounting boss.
に、該覆蓋部の溝状壁面への被着時に、前記突起体が当
接する箇所に該突起体と嵌合する止孔を形成した請求項
１又は２記載の合成樹脂製インサート。3. A protrusion is provided at a tip portion of the cover lid, and a stop hole is formed at a position where the protrusion contacts when the cover is attached to a groove-like wall surface. The synthetic resin insert according to claim 1 or 2.
した請求項１乃至３のいずれかに記載の合成樹脂製イン
サート。4. The synthetic resin insert according to claim 1, wherein reinforcing ribs are provided in the bay-shaped depressions of the groove-shaped wall surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6331505A JPH08156022A (en) | 1994-12-10 | 1994-12-10 | Insert of synthetic resin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6331505A JPH08156022A (en) | 1994-12-10 | 1994-12-10 | Insert of synthetic resin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08156022A true JPH08156022A (en) | 1996-06-18 |
Family
ID=18244395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6331505A Pending JPH08156022A (en) | 1994-12-10 | 1994-12-10 | Insert of synthetic resin |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08156022A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6932448B1 (en) | 2004-03-02 | 2005-08-23 | Toyota Technical Center Usa, Inc. | Door with self-retaining knob |
| JP2012166457A (en) * | 2011-02-15 | 2012-09-06 | Kojima Press Industry Co Ltd | Method of molding cushion for assembled item |
-
1994
- 1994-12-10 JP JP6331505A patent/JPH08156022A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6932448B1 (en) | 2004-03-02 | 2005-08-23 | Toyota Technical Center Usa, Inc. | Door with self-retaining knob |
| JP2012166457A (en) * | 2011-02-15 | 2012-09-06 | Kojima Press Industry Co Ltd | Method of molding cushion for assembled item |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5171032B2 (en) | instrument panel | |
| EP1201394B1 (en) | Integral skin foam molded article | |
| JP4482440B2 (en) | Plastic molded product | |
| JP4482439B2 (en) | Plastic molded product | |
| JPH08156022A (en) | Insert of synthetic resin | |
| JP2006256043A (en) | Skinned resin molded product | |
| JP4773191B2 (en) | Resin molded body and molding method thereof | |
| JP7377606B2 (en) | Vehicle cushion pad and its manufacturing method | |
| JP5057369B2 (en) | Seal structure of headrest insert | |
| JP7438415B2 (en) | Vehicle cushion pad and its manufacturing method | |
| JP3868087B2 (en) | Manufacturing method of skin integral foam molding | |
| JP6746414B2 (en) | Vehicle seat pad manufacturing method | |
| JPH1113717A (en) | Fixing tool mounting part for foam-molded product | |
| JPH08155975A (en) | Production of interior material | |
| JPH08187737A (en) | Base material for pad molded form and manufacture thereof | |
| JP2005305917A (en) | Expansion molded part and its manufacturing method | |
| JP3565315B2 (en) | Door pocket structure | |
| JP5038826B2 (en) | Seat pad, method for producing the same, and foam mold | |
| JP2660376B2 (en) | Manufacturing method of resin molded body with skin | |
| US20180334068A1 (en) | Car safety seat | |
| JP2000006742A (en) | Airbag lid structure for vehicle airbag device | |
| JP5205138B2 (en) | Interior parts for vehicles and manufacturing method thereof | |
| JPH08174577A (en) | Plastic molded article with pad and manufacture thereof | |
| JP2007151785A (en) | Manufacturing method of skin-integrated foamed product | |
| JPH08108436A (en) | Production of foamed molding, foamed molding and reinforcing core material thereof |