JPH0249066Y2

JPH0249066Y2 -

Info

Publication number: JPH0249066Y2
Application number: JP14217384U
Authority: JP
Priority date: 1984-09-21
Filing date: 1984-09-21
Publication date: 1990-12-25
Also published as: JPS6157044U

Description

【考案の詳細な説明】産業上の利用分野本考案は、例えば自動車の運転席に設けられる
インストルメント・パネルのフレームのように、
計器類を収納する開口を有するコア材と、このコ
ア材の表面に凸型真空成形法により被覆されるシ
ートとを備える成形品に関する。[Detailed description of the invention] Industrial application field The present invention is suitable for use in the frame of an instrument panel installed in the driver's seat of a car, for example.
The present invention relates to a molded product comprising a core material having an opening for housing instruments, and a sheet coated on the surface of the core material by a convex vacuum forming method.

従来の技術この種の従来品を第２図〜第４図により説明す
る。第２図は成形品の一例を示し、この成形品に
は上下にそれぞれ開口１，２が形成される。この
成形品は基本的にはコア材３により形状が定めら
れ、第３図に示されるように、このコア材３の表
面には合成樹脂等の軟質シート４が被覆される。
軟質シート４は、凸型真空成形法により、真空力
により矢印Ａ方向に吸引されてコア材３の表面に
吸着され、開口１，２の縁部においてＢのように
コア材３の裏側に巻込む。Prior Art This type of conventional product will be explained with reference to FIGS. 2 to 4. FIG. 2 shows an example of a molded product, in which openings 1 and 2 are formed at the top and bottom, respectively. The shape of this molded product is basically determined by a core material 3, and as shown in FIG. 3, the surface of this core material 3 is covered with a soft sheet 4 made of synthetic resin or the like.
By the convex vacuum forming method, the soft sheet 4 is sucked in the direction of arrow A by vacuum force and adsorbed to the surface of the core material 3, and is wrapped around the back side of the core material 3 as shown in B at the edges of the openings 1 and 2. It's crowded.

さて開口２のように、４つの角部が曲率半径の
非常に小さいすなわち角ばつたものである場合、
第４図に示されるように、角部Ｃの部分において
シート４が充分角ばらず、丸みを帯びたり、しわ
寄り（ブリツジ）を生じたりしやすい。これはシ
ート４が発泡層を包み、非常に軟らかいからであ
る。 Now, if the four corners have a very small radius of curvature, that is, they are uneven, as in opening 2,
As shown in FIG. 4, the sheet 4 is not sufficiently squared at the corner C, and tends to be rounded or wrinkled (bristle). This is because the sheet 4 wraps around the foam layer and is very soft.

考案が解決しようとする問題点本考案は、上述のように従来の成形品におい
て、開口の角部においてシートが丸みを帯びたり
しわ寄りを生じたりするという問題点を解決す
る。すなわち本考案は、開口の角部が正確な角形
状になるような、コア材とシートとを有する成形
品を得ることを目的とする。Problems to be Solved by the Invention The present invention solves the above-mentioned problem in conventional molded products that the sheet becomes rounded or wrinkled at the corners of the opening. That is, an object of the present invention is to obtain a molded product having a core material and a sheet so that the corner portion of the opening has an accurate angular shape.

問題点を解決するための手段上記問題点を解決するため、本考案は、コア材
の開口の角部を切欠いて凹部を形成して、シート
の角部裏面が真空成形時に凹部に嵌入するよう構
成したことを特徴としている。Means for Solving the Problems In order to solve the above problems, the present invention notches the corner of the opening of the core material to form a recess so that the back surface of the corner of the sheet fits into the recess during vacuum forming. It is characterized by its composition.

実施例以下図示実施例により本考案を説明する。Example The present invention will be explained below with reference to the illustrated embodiments.

第１図は一実施例を示し、これは第３図の−
線の部分に相当する。コア材３には真空成形時
において真空を導くための穴５が穿設され、角部
は切欠かれて４分の３円状の凹部６が形成され
る。しかして真空成形時に、シート４の角部の裏
側部分がこの凹部６内に嵌入し、これにより、角
部の表側すなわち内側にしわが寄つたり、角部が
丸くなつたりするのが防止される。凹部６の４分
の３円の中心はコア材３の角部に一致し、またそ
の半径はシート４の厚さに略等しい。この半径が
小さすぎると、シート４の角部における曲率半径
が相対的に小さくなるものの充分正確な角形にな
らず、またこの半径が大きすぎると、シート４の
角部において凹部６の方向へのへこみが形成され
てしまう。なお、シート４の内側には表皮８が被
覆される。 FIG. 1 shows an embodiment, which is similar to FIG.
Corresponds to the line part. A hole 5 for introducing a vacuum during vacuum forming is formed in the core material 3, and a corner portion is notched to form a three-quarter circular recess 6. Therefore, during vacuum forming, the back side of the corner of the sheet 4 fits into the recess 6, thereby preventing the front side of the corner, that is, the inside, from being wrinkled and the corner from becoming rounded. . The center of the three-quarter circle of the recess 6 coincides with the corner of the core material 3, and its radius is approximately equal to the thickness of the sheet 4. If this radius is too small, the radius of curvature at the corner of the sheet 4 will be relatively small, but the square shape will not be sufficiently accurate, and if this radius is too large, the radius of curvature at the corner of the sheet 4 will be smaller in the direction of the recess 6. A dent will form. Note that the inner side of the sheet 4 is covered with a skin 8.

なお、上記凹部６の形状は、４分の３円でなく
楕円にしてもよい。また角部の角度は直角である
必要はなく、鋭角あるいは鈍角であつてもよい。 Note that the shape of the recess 6 may be an ellipse instead of a three-quarter circle. Further, the angle of the corner portion does not have to be a right angle, but may be an acute angle or an obtuse angle.

考案の効果以上のように本考案によれば、開口の角部にお
いて、シートが丸みを帯びたり、しわ寄りを生じ
たりするおそれがなくなり、正確な角形状が得ら
れるという効果が得られる。Effects of the Invention As described above, according to the present invention, there is no fear that the sheet will be rounded or wrinkled at the corners of the opening, and an accurate corner shape can be obtained.

[Brief explanation of drawings]

第１図は本考案の一実施例を示し、第３図の
−線に相当する部分の断面図、第２図〜第４図
は従来品を示し、第２図は従来品の斜視図、第３
図は第２図の−線に沿う断面図、第４図は第
２図ので示す部分の拡大図である。２……開口、３……コア材、４……シート、６
……凹部、７……突部。 Fig. 1 shows an embodiment of the present invention, a sectional view of a portion corresponding to the - line in Fig. 3, Figs. 2 to 4 show a conventional product, and Fig. 2 is a perspective view of the conventional product; Third
The figure is a sectional view taken along the line - in FIG. 2, and FIG. 4 is an enlarged view of the portion shown by . 2...Opening, 3...Core material, 4...Sheet, 6
...Concavity, 7...Protrusion.

Claims

[Claims for Utility Model Registration] 1. A core material in which an opening having at least one corner is formed, and a soft sheet affixed to the surface of the core material including at least the corner by a convex vacuum forming method. A core material characterized in that a corner of the opening of the core material is cut out to form a recess so that the back surface of the corner of the sheet fits into the recess during vacuum forming. Molded sheet products. 2. The molded product according to claim 1, wherein the recess is three-quarters of a circle centered on the corner of the core material. 3 Utility model registration claim 2 characterized in that the radius of three-quarters of a circle is approximately equal to the thickness of the sheet
Molded product according to claim 4. The molded product according to claim 1, wherein the recess is an ellipse centered on the corner of the core material, and the protrusion is an ellipse that fits tightly into the recess. Goods.