JP2604377Y2 - Waterproof grommet - Google Patents
Waterproof grommetInfo
- Publication number
- JP2604377Y2 JP2604377Y2 JP1992063174U JP6317492U JP2604377Y2 JP 2604377 Y2 JP2604377 Y2 JP 2604377Y2 JP 1992063174 U JP1992063174 U JP 1992063174U JP 6317492 U JP6317492 U JP 6317492U JP 2604377 Y2 JP2604377 Y2 JP 2604377Y2
- Authority
- JP
- Japan
- Prior art keywords
- bellows
- long
- waterproof grommet
- cylindrical portion
- short side
- 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.)
- Expired - Fee Related
Links
- 230000002093 peripheral effect Effects 0.000 claims description 10
- 239000007787 solid Substances 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 229920003051 synthetic elastomer Polymers 0.000 description 2
- 239000005061 synthetic rubber Substances 0.000 description 2
- 101150096674 C20L gene Proteins 0.000 description 1
- 102220543923 Protocadherin-10_F16L_mutation Human genes 0.000 description 1
- 101100445889 Vaccinia virus (strain Copenhagen) F16L gene Proteins 0.000 description 1
- 101100445891 Vaccinia virus (strain Western Reserve) VACWR055 gene Proteins 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000003578 releasing effect Effects 0.000 description 1
Landscapes
- Insulating Bodies (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本考案は、防水グロメットの製造
過程における型抜きを容易に行い得る形状の防水グロメ
ットに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waterproof grommet having a shape capable of easily removing a die in a process of manufacturing the waterproof grommet.
【０００２】[0002]
【従来の技術】図５は、実開昭６３−１２６１５０号公
報に記載された従来の防水グロメットを示す斜視図、図
６は、図５のＡ部拡大断面図である。該防水グロメット
１８は、合成ゴムを材料として、電線挿通孔１９を有す
る両端のフランジ状のパネル取付部２０，２０を筒状部
２１で一体に連結し、該筒状部２１に傾斜した楕円状の
蛇腹２２を複数平行に形成してなるものである。該パネ
ル取付部２０，２０は、例えば自動車のドアサイドパネ
ル２３とボディパネル（図示せず）に嵌着され、傾斜し
た複数の蛇腹２２はドアの開閉による屈曲撓みを吸収可
能である。2. Description of the Related Art FIG. 5 is a perspective view showing a conventional waterproof grommet described in Japanese Utility Model Application Laid-Open No. 63-126150, and FIG. 6 is an enlarged sectional view of a portion A in FIG. The waterproof grommet 18 is made of synthetic rubber and is formed by integrally connecting flange-like panel mounting portions 20, 20 at both ends having an electric wire insertion hole 19 with a cylindrical portion 21, and is inclined to the cylindrical portion 21. Are formed in parallel with each other. The panel mounting portions 20, 20 are fitted to, for example, a door side panel 23 and a body panel (not shown) of an automobile, and the plurality of inclined bellows 22 can absorb bending bending due to opening and closing of the door.
【０００３】しかしながら、上記従来の構造にあって
は、楕円状の蛇腹２２が、図６の如く長径側の上端部２
４の対向する内面２５ａ，２５ｂを平行に傾斜させ、内
面２５ａと筒状部２１の軸心２１ａとの交角θ2 が鋭角
になっている関係で、製造過程で内側成形型（図示せ
ず）を矢印イ方向に引き抜く際に、成形型が長径側上端
部２４の内面２５ａに引っ掛かり、型抜き作業性が悪い
と同時に蛇腹２２が破損しやすいという問題があった。
また、ドアの開閉時に蛇腹２２が首振り運動をして屈曲
撓みを吸収するが、蛇腹２２の軸心２１ａを中心とした
捩れに対しては捩れ吸収性をさらに高める必要があっ
た。[0003] However, in the above-mentioned conventional structure, the elliptical bellows 22 is provided with the upper end 2 on the long diameter side as shown in FIG.
4 of opposing inner surfaces 25a, 25b is inclined parallel to the, in relation crossing angle theta 2 is an acute angle between the axis 21a of the inner surface 25a and the cylindrical portion 21, the inner mold in the manufacturing process (not shown) When the mold is pulled out in the direction of arrow A, the mold is caught on the inner surface 25a of the upper end 24 on the long diameter side.
In addition, the bellows 22 swings when the door is opened and closed to absorb the bending deflection. However, it is necessary to further increase the torsional absorbability with respect to the twist around the axis 21a of the bellows 22.
【０００４】[0004]
【考案が解決しようとする課題】本考案は、上記した点
に鑑み、成形時の型抜き性を向上させて蛇腹の破損を防
止することができると共に、ドア開閉時における蛇腹の
捩れ吸収性を高めることのできる防水グロメットを提供
することを目的とする。DISCLOSURE OF THE INVENTION In view of the above points, the present invention can improve the removability of the bellows during molding to prevent breakage of the bellows, and reduce the torsion absorption of the bellows when opening and closing the door. It is intended to provide a waterproof grommet that can be raised.
【０００５】[0005]
【課題を解決するための手段】上記目的を達成するため
に、本考案は、両端方のパネル取付部の間に楕円状の蛇
腹が傾斜して形成され、該パネル取付部を支点として該
蛇腹に捩り力が作用する防水グロメットにおいて、該蛇
腹の長径側端部の縦断面が略直角三角形の傾斜状長辺部
と短辺部とで構成され、該短辺部が該蛇腹の軸心に対し
て直交し、一方の長径側端部の短辺部と他方の長径側端
部の傾斜状長辺部とが同一面に続き、一方の長径側端部
の傾斜状長辺部と他方の長径側端部の短辺部とが同一面
に続き、該蛇腹の頂部が、該蛇腹の平行な各谷部に対し
て傾斜して位置していることを特徴とする防水グロメッ
トを採用する（請求項１）。また、平滑な内周面を有す
る筒状部の両端にパネル取付部が形成された防水グロメ
ットにおいて、該筒状部の外周面に、該筒状部の板厚よ
りも厚肉な複数枚の中実な蛇腹板が傾斜して平行に且つ
近接して形成されたことを特徴とする防水グロメットを
併せて採用する（請求項２）。In order to achieve the above object, the present invention provides an elliptical bellows formed between two panel mounting portions at both ends, with the panel mounting portions serving as fulcrums. In a waterproof grommet in which a torsional force acts on the bellows, a longitudinal section of the major-diameter end of the bellows is composed of a slanted long side of a substantially right triangle and a short side, and the short side is formed of the bellows the perpendicular to the axis, one following the short side portion and the inclined long side portions and the same surface of the other long diameter side end portion of the long diameter side end portion, inclined long side of one of the long diameter side end portion waterproof grommet part is and the other of the long diameter side end portion of the short side portions continued on the same plane, the top of the bellows, characterized in that it is positioned obliquely relative to each valley parallel to the bellows Is adopted (claim 1). Further, in a waterproof grommet in which a panel mounting portion is formed at both ends of a cylindrical portion having a smooth inner peripheral surface, a plurality of sheets thicker than the plate thickness of the cylindrical portion are provided on the outer peripheral surface of the cylindrical portion. A waterproof grommet, characterized in that a solid bellows plate is formed obliquely in parallel and close to each other, is also employed (claim 2).
【０００６】[0006]
【作用】請求項１の構成においては、蛇腹の長径側端部
以外の部位が全て軸心に対して鈍角的に交差し、それに
より型抜き抵抗が減少する。また、該蛇腹の特有な形状
によって、蛇腹が軸心を中心として捩れやすくなり、捩
れ力が均一に吸収される。また、請求項２の構成におい
ては、筒状部の内周面が平滑であるから、型抜き時に蛇
腹の抵抗がなく、型抜き性が良い。また、筒状部の捩れ
時に各蛇腹板が連鎖的に当接して支え合い、筒状部のへ
こみ等の異常変形を防止する。According to the first aspect of the present invention, all parts other than the long-diameter end of the bellows intersect at an obtuse angle with respect to the axis, thereby reducing the punching resistance. Further, the bellows is easily twisted about the axis due to the unique shape of the bellows, and the torsional force is absorbed uniformly. Further, in the configuration of the second aspect, since the inner peripheral surface of the cylindrical portion is smooth, there is no bellows resistance at the time of die cutting, and the die releasing property is good. Further, when the tubular portion is twisted, the bellows plates abut in a chain and support each other, thereby preventing abnormal deformation such as dent of the tubular portion.
【０００７】[0007]
【実施例】図１は、本考案に係る防水グロメットの第一
実施例を示す斜視図、図２は同じく縦断面図である。こ
の防水グロメット１は、合成ゴムを材料として、電線挿
通孔２とパネル嵌着溝３とを有する両端のパネル取付部
４，４を連結する筒状部５に、傾斜した楕円状の蛇腹６
を複数平行に膨出形成し、該蛇腹６の長径側の上下端部
７，７′の型抜き当接内面８と該筒状部５の軸心５ａと
の交角θを９０°に設定してなるものである。なお、交
角θを９０°以上の鈍角θ1 とすることも型抜き性の観
点からは有効である。1 is a perspective view showing a first embodiment of a waterproof grommet according to the present invention, and FIG. 2 is a longitudinal sectional view of the same. The waterproof grommet 1 is made of synthetic rubber, and is provided with a slanted elliptical bellows 6 on a cylindrical portion 5 connecting the panel mounting portions 4 at both ends having an electric wire insertion hole 2 and a panel fitting groove 3.
Are bulged in parallel to each other, and the intersection angle θ between the inner surfaces 8 of the die-cutting abutments 7 and 7 ′ on the major diameter side of the bellows 6 and the axis 5 a of the cylindrical portion 5 is set to 90 °. It is. It is also effective from the viewpoint of die cutting properties that the intersection angle theta obtuse theta 1 over 90 °.
【０００８】すなわち型抜きを行う際に成形型（図示せ
ず）が一番引っ掛かりやすい長径側端部７，７′の当接
内面８を筒状部５（蛇腹６）の軸心に対して直角に交差
するように形成し、矢印イ方向への型抜き時の抵抗を少
なくして型抜き作業性の向上と該長径側端部７，７′の
破損を防止したものである。That is, when the mold is removed, the abutment inner surface 8 of the long-diameter end portions 7 and 7 ′, on which the forming die (not shown) is most likely to be caught, is positioned with respect to the axis of the cylindrical portion 5 (bellows 6). They are formed so as to intersect at right angles to reduce the resistance when the die is removed in the direction of arrow A, thereby improving the die-cutting workability and preventing the major-diameter end portions 7, 7 'from being damaged.
【０００９】該蛇腹６の長径側端部７，７′以外の部位
すなわち長径側端部７，７′から短径側端部９にかけて
の傾斜面１０（該傾斜面１０の頂部を１１ａで、谷部を
１１ｂで示す）は筒状部５の軸心５ａに対して鈍角的に
交差し、柔軟性と捩れ吸収の均一性とを有している。[0009] The inclined surface 10 of the bellows 6 other than the major end 7, 7 ′, that is, from the major end 7, 7 ′ to the minor end 9 (the top of the inclined surface 10 is 11 a, The valleys are indicated by 11b) intersect at an obtuse angle with the axis 5a of the cylindrical portion 5, and have flexibility and uniformity of torsion absorption.
【００１０】蛇腹６の長径側端部７の縦断面は直角三角
形状の傾斜状長辺部７ａと短辺部７ｂとで構成され、短
辺部７ｂの延長線が蛇腹６の軸心５ａと直交し、一方の
長径側端部７の短辺部７ｂと他方の長径側端部７′の傾
斜状長辺部７ａ′とが同一面に続き、一方の長径側端部
７の傾斜状長辺部７ａと他方の長径側端部７′の短辺部
７ｂ′とが同一面に続き、蛇腹６の頂部１１ａが、蛇腹
６の平行な各谷部１１ｂ，１１ｂに対して傾斜して位置
している。The longitudinal section of the long-diameter end 7 of the bellows 6 is composed of a right-angled triangular inclined long side 7a and a short side 7b, and the extension of the short side 7b is aligned with the axis 5a of the bellows 6. At right angles, the inclination of the short side 7b of one long diameter side end 7 and the other long diameter side end 7 '
The slanted long side 7a 'continues on the same plane, the slanted long side 7a of one long diameter end 7 and the short side 7b' of the other long diameter end 7 'continue on the same plane, top 11a of the bellows 6, parallel each valley 11b of the bellows 6 are positioned inclined with respect to 11b.
【００１１】図３〜４は、本考案に係る防水グロメット
の第二実施例を示すものである。この防水グロメット１
２は、パネル取付部１３，１３を連結する筒状部１４の
外周面１４ａ上に楕円状の中実の蛇腹板１５を傾斜させ
て複数平行に突設し、該筒状部１４の内周面１４ｂを円
筒状の平滑面としたものである。各蛇腹板１５の間には
該蛇腹板１５の板厚ｔとほぼ同程度の一定の間隙ｓを設
けている。各蛇腹板１５の板厚ｔは筒状部１４の板厚ｔ
1 よりも厚い。複数の蛇腹板１５で蛇腹１６が構成され
ている。FIGS. 3 and 4 show a second embodiment of the waterproof grommet according to the present invention. This waterproof grommet 1
Reference numeral 2 denotes a plurality of elliptical solid bellows plates 15 which are inclined and protruded in parallel on the outer peripheral surface 14a of the cylindrical portion 14 connecting the panel mounting portions 13, 13, and the inner peripheral portion of the cylindrical portion 14. The surface 14b is a cylindrical smooth surface. Between each bellows plate 15 is provided with a fixed gap s of approximately the same as the thickness t of the bellows plate 15. The thickness t of each bellows plate 15 is the thickness t of the cylindrical portion 14.
Thicker than one . A bellows 16 is composed of a plurality of bellows plates 15.
【００１２】本例によれば、筒状部１４の内周面１４ｂ
が平滑であるから型抜きを極めてスムーズに行うことが
できる。且つ複数の蛇腹板１５が平行に傾斜しているか
ら捩れ時に蛇腹板同士１５，１５が順次連鎖的に当接し
て捩れを均一に吸収できる。According to this embodiment, the inner peripheral surface 14b of the cylindrical portion 14
Is smooth, so that the die can be removed very smoothly. And bellows plates are 15, 15 during torsional from a plurality of bellows plate 15 is inclined parallel to can uniformly absorb the twisting sequentially chained brought into contact with.
【００１３】[0013]
【考案の効果】以上の如くに、請求項１記載の考案によ
れば、蛇腹の長径側端部の短辺部が軸心に対して直交し
ていることで、長径側端部以外の部位は全て軸心に対し
て鈍角的に交差しているから、従来の蛇腹が軸心に対し
て鋭角的に交差している構造に較べて、成形時の型抜き
性が格段に向上する。また、蛇腹の長径側端部の縦断面
が略直角三角形の傾斜状長辺部と短辺部とで構成され、
該短辺部が軸心に対して直交し、一方の長径側端部の短
辺部と他方の長径側端部の傾斜状長辺部とが同一面に続
き、一方の長径側端部の傾斜状長辺部と他方の長径側端
部の短辺部とが同一面に続き、蛇腹の頂部が、蛇腹の平
行な各谷部に対して傾斜して位置している構造により、
蛇腹の捩れ性が良好で、且つ捩れ力が均一に吸収され、
蛇腹の耐久性が向上する。また、請求項２記載の考案に
よれば、筒状部の内周面が平滑であるから、蛇腹板の影
響を受けずに筒状部内側の型抜きを容易に行うことがで
きる。また、筒状部に捩れ力が作用した場合に、捩り方
向に回動した一端の蛇腹板が隣の蛇腹板に当接し、隣の
蛇腹板がさらに隣の蛇腹板に当接するというように、各
蛇腹板が連鎖的に当接して支え合うから、筒状部の捩れ
力が均一に吸収され、へこみ等の異常変形が起こらず、
筒状部の耐久性が向上する。As described above, according to the first aspect of the present invention, since the short side of the long-diameter end of the bellows is orthogonal to the axis, the portion other than the long-diameter end is provided. Since all of them intersect at an obtuse angle with respect to the axis, the mold removability at the time of molding is remarkably improved as compared with the conventional structure in which the bellows intersects with the axis at an acute angle. In addition, the longitudinal section of the bellows's major diameter side end is composed of an inclined long side portion and a short side portion of a substantially right triangle,
The short side is orthogonal to the axis, the short side of one long diameter side end and the inclined long side of the other long diameter side end continue on the same plane, and the one long diameter side end is Following the short side portion and is flush angled long side portion and the other of the long diameter side end portion, the top of the bellows, the bellows Rights
The structure located inclined to the line of each valley,
The bellows have good torsion and the torsional force is absorbed uniformly,
The durability of the bellows is improved. According to the second aspect of the present invention, since the inner peripheral surface of the tubular portion is smooth, the inside of the tubular portion can be easily die-cut without being affected by the bellows plate. Further, when a torsional force is applied to the cylindrical portion, the bellows plate at one end rotated in the torsion direction comes into contact with the next bellows plate, and the next bellows plate further contacts the next bellows plate. Since each bellows plate abuts and supports each other in a chain, the torsional force of the cylindrical portion is absorbed uniformly, and abnormal deformation such as dents does not occur.
The durability of the cylindrical portion is improved.
【図１】本考案に係る防水グロメットの第一実施例を示
す斜視図である。FIG. 1 is a perspective view showing a first embodiment of a waterproof grommet according to the present invention.
【図２】同じく縦断面図（円内は拡大図）である。FIG. 2 is a longitudinal sectional view (an enlarged view in the circle).
【図３】本考案に係る防水グロメットの第二実施例を示
す斜視図である。FIG. 3 is a perspective view showing a second embodiment of the waterproof grommet according to the present invention.
【図４】同じく縦断面図である。FIG. 4 is a longitudinal sectional view of the same.
【図５】従来例を示す斜視図である。FIG. 5 is a perspective view showing a conventional example.
【図６】図５のＡ部縦断面図である。6 is a vertical sectional view of a portion A in FIG.
１，１２ 防水グロメット ４，１３ パネル取付部 ５，１４ 筒状部 ５ａ 軸心 ６，１６ 蛇腹 ７，７′ 長径側端部 ７ａ，７ａ′ 傾斜状長辺部 ７ｂ，７ｂ′ 短辺部 １１ａ 頂部 １１ｂ 谷部 １４ｂ 内周面（平滑面） １５ 蛇腹板 θ，θ1 交角1,12 waterproof grommet 4,13 panel mounting portion 5 and 14 cylindrical portion 5a axis 6,16 bellows 7, 7 'diameter side end portion 7a, 7a' inclined long side portions 7b, 7b 'short sides 11a top 11b Valley 14b Inner peripheral surface (smooth surface) 15 Bellows plate θ, θ 1 intersection angle
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) F16L 5/02 B60R 16/02 H01B 17/58 ──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. 7 , DB name) F16L 5/02 B60R 16/02 H01B 17/58
Claims (2)
腹が傾斜して形成され、該パネル取付部を支点として該
蛇腹に捩り力が作用する防水グロメットにおいて、該蛇
腹の長径側端部の縦断面が略直角三角形の傾斜状長辺部
と短辺部とで構成され、該短辺部が該蛇腹の軸心に対し
て直交し、一方の長径側端部の短辺部と他方の長径側端
部の傾斜状長辺部とが同一面に続き、一方の長径側端部
の傾斜状長辺部と他方の長径側端部の短辺部とが同一面
に続き、該蛇腹の頂部が、該蛇腹の平行な各谷部に対し
て傾斜して位置していることを特徴とする防水グロメッ
ト。1. A long-diameter end of a bellows in a waterproof grommet in which an elliptical bellows is formed to be inclined between panel mounting portions at both ends and a torsional force acts on the bellows with the panel mounting portion serving as a fulcrum. The longitudinal section of the portion is composed of an inclined long side portion of a substantially right triangle and a short side portion, and the short side portion is orthogonal to the axis of the bellows, and one of the long diameter side end portions Following the inclined long side portion of the short side and the other long diameter side end in the same plane, the short side portion and is flush angled long side portion and the other of the long diameter side end of one of the long diameter side end portion A waterproof grommet, wherein a top of the bellows is inclined with respect to each parallel valley of the bellows.
ネル取付部が形成された防水グロメットにおいて、該筒
状部の外周面に、該筒状部の板厚よりも厚肉な複数枚の
中実な蛇腹板が傾斜して平行に且つ近接して形成された
ことを特徴とする防水グロメット。2. A waterproof grommet in which a panel mounting portion is formed at both ends of a cylindrical portion having a smooth inner peripheral surface, wherein the outer peripheral surface of the cylindrical portion has a thickness greater than the thickness of the cylindrical portion. A waterproof grommet, wherein a plurality of solid bellows plates are formed obliquely parallel and close to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1992063174U JP2604377Y2 (en) | 1992-09-09 | 1992-09-09 | Waterproof grommet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1992063174U JP2604377Y2 (en) | 1992-09-09 | 1992-09-09 | Waterproof grommet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0628461U JPH0628461U (en) | 1994-04-15 |
| JP2604377Y2 true JP2604377Y2 (en) | 2000-05-08 |
Family
ID=13221636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1992063174U Expired - Fee Related JP2604377Y2 (en) | 1992-09-09 | 1992-09-09 | Waterproof grommet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2604377Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3900782B2 (en) * | 2000-03-09 | 2007-04-04 | 住友電装株式会社 | Grommet |
| JP7448337B2 (en) * | 2019-11-14 | 2024-03-12 | 矢崎総業株式会社 | grommet |
-
1992
- 1992-09-09 JP JP1992063174U patent/JP2604377Y2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0628461U (en) | 1994-04-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 19991012 |
|
| LAPS | Cancellation because of no payment of annual fees |