JPH0463743A - Corner part structure for sealing member - Google Patents

Abstract

PURPOSE:To obtain a sponge rubber sealing member having uniform structure and also the good outward appearance of a corner outer surface by providing a lightening part on the inner side of a corner part in the corner part of a sealing member, and making the thickness of the corner part thinner than that of an average part. CONSTITUTION:A sealing member 5, used in a gap part (A part) between the rear end upper part of the front fender of an automobile and the lower part peripheral part of a front pillar, is composed of sponge rubber, has a nearly V-shaped cross section, is made like a ship shape as a whole, and forms a rib 52 in the inside. A corner part 51 is bent in an acute angle state. Here a lightening part 510 is provided on an inner side of the corner part 51, and the wall thickness of the corner part 51 is formed thinner than that of an average part. This, when the sealing member 5 is formed by injecting rubber material from an injection gate to the cavity of a die, causes the rubber material, injected from the gate, to be narrowed in its width at the corner of the cavity, consequently filling is well made even on the protruded side of the corner to obtain a sealing member having good outward appearance.

Description

【発明の詳細な説明】 ［産業上の利用分野］ 本発明は自動車等に用いられるシール部材、特に型成形
されたスポンジゴムのシール部材に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a sealing member used in automobiles and the like, and particularly to a molded sponge rubber sealing member.

［従来技術］ 自動車のフロントフェンダ−の後端上部とフロントピラ
ーの下部周辺部との隙間部分（第１図のＡ部）を例にと
ると、第６図に示すようにフロントピラー１（第１図）
の下部にはフロントフェンダ−２とカウルパネル３との
間にフロントフェンダ−２内から車外に通じる隙間４が
存在し、この隙間４をシールするためにシール部材５が
取付けられている。このシール部材５は第６図および第
７図に示すように、スポンジゴムよりなり、断面山型を
なしている。そしてこの種のシール部材５は、金型のゲ
ートからキャビティにゴム材料を注入して型成形される
。[Prior Art] Taking as an example the gap between the upper part of the rear end of the front fender of an automobile and the lower peripheral part of the front pillar (section A in FIG. 1), as shown in FIG. Figure 1)
A gap 4 communicating from the inside of the front fender 2 to the outside of the vehicle exists between the front fender 2 and the cowl panel 3 at the lower part of the front fender 2, and a sealing member 5 is attached to seal this gap 4. As shown in FIGS. 6 and 7, this seal member 5 is made of sponge rubber and has a chevron-shaped cross section. This type of sealing member 5 is molded by injecting a rubber material into the cavity from the gate of the mold.

ところで、シール部材５の厚さ方向に屈曲する頂端コー
ナ部５１では必然的に厚さが一般部より厚くなり、この
なめコーナ部５１では注入材料の充填圧が低くなる傾向
がある。特に、区側のようにコーナ部５１が鋭角状に屈
曲する場合には、コーナ部５１の厚さは一般部よりも可
成り厚くなるので材料の廻りが特に突出側で不充分とな
って、組織が粗くなるとともに、外表面側、即ち突出側
に細かい凹部５１ａが発生することが多い。By the way, the thickness of the top corner portion 51 bent in the thickness direction of the sealing member 5 is inevitably thicker than the general portion, and the filling pressure of the injection material tends to be lower in this diagonal corner portion 51. In particular, when the corner part 51 is bent at an acute angle, such as on the ward side, the thickness of the corner part 51 becomes considerably thicker than the general part, so that the material cannot be sufficiently wrapped around the part, especially on the protruding side. As the structure becomes coarser, fine recesses 51a often occur on the outer surface side, that is, on the protruding side.

そこで、シール部材５の全体の厚さを薄くして注入速度
を上げる手段もとられ得るが、薄くすると、シール部材
５の剛性が不足し、シール性が低下するとともに、組付
は不良が発生したり、部分的なへこみが発生したりする
。Therefore, measures can be taken to increase the injection speed by reducing the overall thickness of the seal member 5, but if the thickness is made thinner, the rigidity of the seal member 5 will be insufficient, the sealing performance will decrease, and the assembly may be defective. or a partial dent may occur.

［本発明が解決しようとする課題］ そこで本発明は、はぼ直角ないしは鋭角状のコーナ部に
おいて、組織が一般部と均一でかつ表面状態の良好なス
ポンジゴムの型成形シール部材を提供することを目的と
する。[Problems to be Solved by the Present Invention] Therefore, the present invention provides a molded sealing member made of sponge rubber, in which the structure is uniform with that of the general part and the surface condition is good in the corner parts having a right angle or an acute angle. With the goal.

［課題を解決するための手段］ 本発明はシール部材の上記コーナ部には、その内側に肉
抜きを設け、コーナ部の厚さを一般部の厚さよりも薄く
したことを特徴とする。[Means for Solving the Problems] The present invention is characterized in that the corner portion of the sealing member is provided with a cutout inside thereof, and the thickness of the corner portion is made thinner than the thickness of the general portion.

［作用、効果ｊ 型成形時、直角ないしは鋭角状のコーナ部では突出側（
外表面側）の注入材料の廻りが不充分となるが、コーナ
部の厚さを一般部よりも薄くしたので突出側へも材料が
充分に充填される。従って、組織が均一でコーナ外表面
の見栄もよいスポンジゴムのシール部材が得られる。ま
た、一般部は厚さを確保できるから、シール部材の組付
は安定性もよく、シール性も良好である。[Function, effect j] During mold forming, the protruding side (
Although the material to be injected on the outer surface side is insufficient, since the thickness of the corner part is made thinner than the general part, the material is sufficiently filled into the protruding side. Therefore, a sponge rubber sealing member with a uniform structure and a good appearance on the outer corner surface can be obtained. In addition, since the general portion can have a sufficient thickness, the sealing member can be assembled with good stability and has good sealing performance.

［実施例］ 第２図および第３図は、第１図のＡ部に用いられる第７
図図示のシール部材に対応する本発明のシール部材を示
すものである。[Example] FIGS. 2 and 3 show the seventh example used in part A of FIG.
1 shows a sealing member of the present invention corresponding to the sealing member shown in the figure.

シール部材５はスポンジゴムよりなり、断面はぼ■字形
で、全体が飛型をなしており、内部にはリブ５２が形成
しである。コーナ部５１は鋭角状に屈曲している。コー
ナ部５１の内側には肉抜き５１０が設けてあって、コー
ナ部５１の肉厚は一般部のそれよりも薄くしである。The seal member 5 is made of sponge rubber, has a box-shaped cross section, has a flying shape as a whole, and has ribs 52 formed inside. The corner portion 51 is bent at an acute angle. A cutout 510 is provided inside the corner portion 51, and the wall thickness of the corner portion 51 is thinner than that of the general portion.

一般部の厚さは４〜６ｍｍ、コーナ部の厚さは２〜４ｍ
ｍ程度であって、コーナ部５１の厚さは一般部の３／４
程度ないしそれ以下とすることが望ましい。The thickness of the general part is 4-6mm, the thickness of the corner part is 2-4m
m, and the thickness of the corner part 51 is 3/4 of that of the general part.
It is desirable to keep it at or below that level.

このシール部材５は型成形体で、金型のキャビティに注
入ゲートよりゴム材料を注入することにより成形される
。この場合、ゲートより注入されたゴム材料は、キャビ
ティのコーナにおいて幅が狭小となるため、コーナの突
出側へもよく充填される。従って突出側も他と同じ組織
となって、従来のように外表面に凹所が発生せず、見栄
えのよいシール部材が得られる。This sealing member 5 is a molded body, and is molded by injecting a rubber material into a cavity of a mold through an injection gate. In this case, since the rubber material injected through the gate has a narrow width at the corner of the cavity, it is well filled into the protruding side of the corner. Therefore, the protruding side has the same structure as the other parts, and unlike the conventional sealing member, there are no recesses on the outer surface, and a good-looking sealing member can be obtained.

また、一般部において剛性が確保され、保形性および取
付安定性もよい。In addition, rigidity is ensured in the general portion, and shape retention and installation stability are also good.

本発明は上記シール部材に限らず、他のシール部材にも
適用できる。The present invention is applicable not only to the above-mentioned seal member but also to other seal members.

第４図および第５図は他の実施例を示すもので、自動車
ボデー側面のドア開口の上手部まわりには第１図に示す
ようにドアガラス７の外周をシールするスポンジゴムの
シール部材（ウェザストリップ）６が取付けられている
。FIGS. 4 and 5 show another embodiment, in which a sponge rubber seal member (as shown in FIG. Weatherstrip) 6 is attached.

このシール部材６の端末（第１図のＢ部）には第４図に
示すように型成形の端末部６Ａが形成され、ボデーパネ
ルに固定されるようになっている。As shown in FIG. 4, a molded end portion 6A is formed at the end of the seal member 6 (portion B in FIG. 1), and is fixed to a body panel.

このシール部材６の端末部６Ａは、第５図に示すように
幅方向両端が直角ないしはやや鋭角状に屈曲するコーナ
部６１を有している。As shown in FIG. 5, the end portion 6A of the sealing member 6 has a corner portion 61 at both ends in the width direction bent at a right angle or a slightly acute angle.

しかして、このコーナ部６１にもその内側に肉抜き６１
０を設けてコーナ部６１の厚さを一般部よりも薄くする
ことで、上記実施例と同様の効果が奏される。Therefore, this corner part 61 also has a lightening hole 61 inside it.
By providing 0 and making the thickness of the corner portion 61 thinner than the general portion, the same effects as in the above embodiment can be achieved.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本発明を適用したシール部材が装着される自動
車の斜視図、第２図および第３図は第１図のＡ部に取付
けられる本発明のシール部材を示すもので、第２図は全
体斜視図、第３図は第２図の要部拡大図、第４図および
第５図は第１図のＢ部に取付けられる本発明のシール部
材を示すもので、第４図は斜視図、第５図は第４図のｖ
−ｖ線断面図、第６図は第１図のＡ部に用いられる従来
のシール部材の取付状態断面図、第７図は第６図のシー
ル部材の全体斜視図である。 １・・・・・・フロントピラー ２・・・・・・フロントフェンダ− ３・・・・・・カウルパネル ５．６．６Ａ・・・・・・シール部材 ５１．６１・・・・・・コーナ部 ５１０．６１０・・・・・・肉抜き 第２図 第１図 第３図 第７図 第６図FIG. 1 is a perspective view of an automobile to which a seal member to which the present invention is applied is installed, and FIGS. 2 and 3 show the seal member of the present invention attached to section A in FIG. is an overall perspective view, FIG. 3 is an enlarged view of the main part of FIG. 2, FIGS. 4 and 5 show the sealing member of the present invention attached to section B in FIG. 1, and FIG. 4 is a perspective view. Figure 5 is the v of Figure 4.
-V line sectional view, FIG. 6 is a sectional view of a conventional sealing member used in section A of FIG. 1 in an installed state, and FIG. 7 is an overall perspective view of the sealing member of FIG. 6. 1...Front pillar 2...Front fender 3...Cowl panel 5.6.6A...Seal member 51.61... Corner part 510.610... Thinning out Fig. 2 Fig. 1 Fig. 3 Fig. 7 Fig. 6

Claims (1)

【特許請求の範囲】[Claims] 型成形されたスポンジゴムのシール部材において、シー
ル部材の厚さ方向にほぼ直角ないしは鋭角状に屈曲する
コーナ部の内側に肉抜きを設けてコーナ部の厚さを一般
部の厚さよりも薄くしたことを特徴とするシール部材の
コーナ部構造。In a molded sponge rubber seal member, the thickness of the corner part is made thinner than the thickness of the general part by providing a cutout inside the corner part that is bent at an almost right angle or an acute angle in the thickness direction of the seal member. A corner structure of a seal member characterized by: