JP2017208970A - Grommet inner, grommet and wire harness - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a grommet inner, a grommet and a wire harness which can be surely assembled.SOLUTION: A grommet inner 3 of a grommet which is applied in a wire harness comprises locking claw parts 32, formed on an outside surface of a fitting part 35, which can be locked to an edge part of a through-hole 101 and deformation adjusting rib parts 33, formed in the outside surface 35b of the fitting part 35, which can contact an inner surface 101a of the through-hole 101. The inner surface 101a of the through-hole 101 and the outside surface 35b of the fitting part 35 are formed in shape extending along a virtual contour line L1. The Four locking claw parts 32 in total are provided one by one at each curved part in four sections between two long-axis reference positions P2 and two short-axis reference positions P3. The four deformation adjusting ribs 33 in total are provided one by one at four sections between the two long-axis reference positions P2 and four locking claw parts 32.SELECTED DRAWING: Figure 7

Description

本発明は、グロメットインナ、グロメット、及び、ワイヤハーネスに関する。   The present invention relates to a grommet inner, a grommet, and a wire harness.

車両のワイヤハーネス等に適用される従来のグロメットインナ、及び、グロメットとして、例えば、特許文献１には、 取付パネルに形成された嵌合孔に挿入され、嵌合孔の内縁に係止する複数のロック部が外側面に設けられた筒状のグロメットインナと、グロメットインナの端部に同軸で被着され、取付パネルに当接してシールする筒状のグロメットアウタとからなるグロメットが開示されている。このグロメットは、グロメットインナの外側面に、嵌合孔への挿入時に嵌合孔の内縁へ弾性的に当接して当該グロメットインナを嵌合孔の中心に位置決め可能な複数のセンタリング部が設けられている。   As a conventional grommet inner and grommet applied to a vehicle wiring harness or the like, for example, in Patent Document 1, a plurality of grommets inserted into a fitting hole formed in a mounting panel and locked to an inner edge of the fitting hole. There is disclosed a grommet comprising a cylindrical grommet inner having a lock portion provided on the outer surface and a cylindrical grommet outer that is coaxially attached to the end of the grommet inner and seals against the mounting panel. Yes. The grommet is provided with a plurality of centering portions on the outer surface of the grommet inner that can elastically contact the inner edge of the fitting hole when the grommet inner is inserted into the fitting hole and position the grommet inner at the center of the fitting hole. ing.

特開２００９−０８９５８７号公報JP 2009-089587 A

ところで、上述の特許文献１に記載のグロメットは、例えば、嵌合孔へのより確実な組み付けの点で更なる改善の余地がある。   By the way, the grommet described in Patent Document 1 described above has room for further improvement in terms of more reliable assembly into the fitting hole, for example.

本発明は、上記の事情に鑑みてなされたものであって、確実に組み付けることができるグロメットインナ、グロメット、及び、ワイヤハーネスを提供することを目的とする。   This invention is made | formed in view of said situation, Comprising: It aims at providing the grommet inner which can be assembled | attached reliably, a grommet, and a wire harness.

上記目的を達成するために、本発明に係るグロメットインナは、被止水面に接触し当該被止水面との間を止水可能であるグロメットアウタが装着される装着部と、前記装着部と一体で電線を挿通可能な環状に形成され、前記被止水面に形成された貫通孔に嵌合可能である嵌合部と、前記嵌合部の外側面から突出して形成され前記貫通孔の縁部に係止可能である係止爪部と、前記嵌合部の外側面から突出して形成され前記貫通孔の内面と当接可能である変形調整リブ部とを備え、前記貫通孔の内面、及び、前記嵌合部の外側面は、長軸と当該長軸と直交する短軸との交点である基準点に対して対称形で、かつ、前記長軸に沿った長さが前記短軸に沿った長さよりも長く、かつ、少なくとも前記長軸に沿った長軸方向の両端が曲線である環状の仮想輪郭線に沿う形状に形成され、前記係止爪部は、前記長軸と前記仮想輪郭線との交点である２つの長軸交点に対応した位置である前記嵌合部の外側面の２つの長軸基準位置と、前記短軸と前記仮想輪郭線との交点である２つの短軸交点に対応した位置である前記嵌合部の外側面の２つの短軸基準位置との間の４つの区間における各曲面部分に少なくとも１つずつ、合計４つが設けられ、前記変形調整リブ部は、前記２つの長軸基準位置と前記４つの係止爪部との間の４つの区間に少なくとも１つずつ、合計４つが設けられることを特徴とする。   In order to achieve the above object, a grommet inner according to the present invention includes a mounting portion on which a grommet outer that is in contact with a water-stopped water surface and can stop water between the water-stopped water surface is mounted, and the mounting portion. A fitting portion that is formed in an annular shape through which an electric wire can be inserted and can be fitted into a through-hole formed in the waterproof surface, and an edge portion of the through-hole that is formed to protrude from the outer surface of the fitting portion A locking claw portion that can be locked to the inner surface, a deformation adjusting rib portion that protrudes from the outer surface of the fitting portion and that can contact the inner surface of the through hole, and the inner surface of the through hole, and The outer surface of the fitting portion is symmetrical with respect to a reference point that is an intersection of the major axis and the minor axis orthogonal to the major axis, and the length along the major axis is the minor axis. Longer than the length along the long axis and at least both ends in the long axis direction along the long axis are curved It is formed in a shape along a contour line, and the locking claw portion includes two outer surfaces of the fitting portion that are positions corresponding to two long-axis intersections that are intersections of the long axis and the virtual contour line. Four points between a long axis reference position and two short axis reference positions on the outer surface of the fitting portion, which are positions corresponding to two short axis intersections that are intersections of the short axis and the virtual contour line A total of four at least one curved surface portion in each section is provided, and at least one deformation adjusting rib portion is provided in four sections between the two long-axis reference positions and the four locking claws. In total, four are provided.

また、上記グロメットインナでは、前記４つの係止爪部、及び、前記４つの変形調整リブ部は、それぞれ前記基準点に対して対称な位置に形成されるものとすることができる。   Moreover, in the said grommet inner, the said 4 latching claw part and the said 4 deformation | transformation adjustment rib part shall each be formed in the symmetrical position with respect to the said reference point.

また、上記グロメットインナでは、前記変形調整リブ部は、前記貫通孔の縁部によって押し潰し可能な潰しリブ部であるものとすることができる。   In the grommet inner, the deformation adjusting rib portion may be a crushing rib portion that can be crushed by an edge portion of the through hole.

また、上記グロメットインナでは、前記嵌合部は、前記２つの長軸基準位置の一方側の曲面部分に設けられ相互に開放可能な開放端部を相互に係止可能な端部係止部と、前記２つの長軸基準位置の他方側の曲面部分に設けられ前記開放端部の開放支点となる支点部とを有するものとすることができる。   Further, in the grommet inner, the fitting portion is provided on the curved surface portion on one side of the two long axis reference positions, and an end locking portion capable of mutually locking an open end portion that can be opened to each other. And a fulcrum portion that is provided on the curved surface portion on the other side of the two long-axis reference positions and that serves as an open fulcrum of the open end portion.

上記目的を達成するために、本発明に係るグロメットは、被止水面に接触し当該被止水面との間を止水可能であるグロメットアウタと、前記グロメットアウタが装着される装着部、前記装着部と一体で電線を挿通可能な環状に形成され、前記被止水面に形成された貫通孔に嵌合可能である嵌合部、前記嵌合部の外側面から突出して形成され前記貫通孔の縁部に係止可能である係止爪部、及び、前記嵌合部の外側面から突出して形成され前記貫通孔の内面と当接可能である変形調整リブ部とを有するグロメットインナとを備え、前記貫通孔の内面、及び、前記嵌合部の外側面は、長軸と当該長軸と直交する短軸との交点である基準点に対して対称形で、かつ、前記長軸に沿った長さが前記短軸に沿った長さよりも長く、かつ、少なくとも前記長軸に沿った長軸方向の両端が曲線である環状の仮想輪郭線に沿う形状に形成され、前記係止爪部は、前記長軸と前記仮想輪郭線との交点である２つの長軸交点に対応した位置である前記嵌合部の外側面の２つの長軸基準位置と、前記短軸と前記仮想輪郭線との交点である２つの短軸交点に対応した位置である前記嵌合部の外側面の２つの短軸基準位置との間の４つの区間における各曲面部分に少なくとも１つずつ、合計４つが設けられ、前記変形調整リブ部は、前記２つの長軸基準位置と前記４つの係止爪部との間の４つの区間に少なくとも１つずつ、合計４つが設けられることを特徴とする。   In order to achieve the above object, a grommet according to the present invention includes a grommet outer that contacts a water-stopped surface and can stop water between the water-stopped surface, a mounting portion to which the grommet outer is mounted, and the mounting A fitting portion that is formed in an annular shape that can be inserted into the wire integrally with the portion, and that can be fitted into a through-hole formed in the water-proof surface, and that protrudes from an outer surface of the fitting portion. A locking claw portion that can be locked to an edge portion, and a grommet inner that has a deformation adjusting rib portion that protrudes from the outer surface of the fitting portion and that can contact the inner surface of the through hole. The inner surface of the through hole and the outer surface of the fitting portion are symmetrical with respect to a reference point that is an intersection of a major axis and a minor axis orthogonal to the major axis, and along the major axis. Longer than the length along the minor axis, and at least the length Are formed in a shape along an annular virtual contour line that is curved at both ends in the major axis direction, and the locking claw portion is formed at two major axis intersections that are intersection points of the major axis and the virtual contour line. The two corresponding long-axis reference positions on the outer surface of the fitting portion that are corresponding positions, and two short-axis intersection points that are the intersection points of the short axis and the virtual contour line. At least one curved surface portion in each of the four sections between the two short axis reference positions on the outer surface is provided in total, and the deformation adjustment rib portion includes the two long axis reference positions and the four short axis reference positions. A total of four is provided, at least one in each of the four sections between the locking claws.

上記目的を達成するために、本発明に係るワイヤハーネスは、電線と、被止水面に接触し当該被止水面との間を止水可能であるグロメットアウタ、及び、前記グロメットアウタが装着されるグロメットインナを有するグロメットとを備え、前記グロメットインナは、前記グロメットアウタが装着される装着部、前記装着部と一体で前記電線を挿通可能な環状に形成され、前記被止水面に形成された貫通孔に嵌合可能である嵌合部、前記嵌合部の外側面から突出して形成され前記貫通孔の縁部に係止可能である係止爪部、及び、前記嵌合部の外側面から突出して形成され前記貫通孔の内面と当接可能である変形調整リブ部とを有し、前記貫通孔の内面、及び、前記嵌合部の外側面は、長軸と当該長軸と直交する短軸との交点である基準点に対して対称形で、かつ、前記長軸に沿った長さが前記短軸に沿った長さよりも長く、かつ、少なくとも前記長軸に沿った長軸方向の両端が曲線である環状の仮想輪郭線に沿う形状に形成され、前記係止爪部は、前記長軸と前記仮想輪郭線との交点である２つの長軸交点に対応した位置である前記嵌合部の外側面の２つの長軸基準位置と、前記短軸と前記仮想輪郭線との交点である２つの短軸交点に対応した位置である前記嵌合部の外側面の２つの短軸基準位置との間の４つの区間における各曲面部分に少なくとも１つずつ、合計４つが設けられ、前記変形調整リブ部は、前記２つの長軸基準位置と前記４つの係止爪部との間の４つの区間に少なくとも１つずつ、合計４つが設けられることを特徴とする。   In order to achieve the above object, a wire harness according to the present invention is equipped with an electric wire, a grommet outer that comes into contact with a water-stopped surface and can stop water between the water-proof surface, and the grommet outer is mounted. A grommet having a grommet inner, wherein the grommet inner is formed in a mounting portion to which the grommet outer is mounted, and is formed in an annular shape through which the electric wire can be inserted integrally with the mounting portion, and is formed in the water-proof surface From the fitting portion that can be fitted into the hole, the locking claw portion that protrudes from the outer surface of the fitting portion and can be locked to the edge of the through hole, and the outer surface of the fitting portion And a deformation adjusting rib portion that protrudes and can contact the inner surface of the through hole, and the inner surface of the through hole and the outer surface of the fitting portion are orthogonal to the long axis. For a reference point that is the intersection with the minor axis An annular virtual contour line that is symmetrical, has a length along the major axis that is longer than the length along the minor axis, and at least both ends in the major axis direction along the major axis are curved. Two long-axis reference | standards of the outer surface of the said fitting part which is formed in the shape along which the said latching claw part is a position corresponding to two long-axis intersections which are the intersections of the said long axis and the said virtual contour line Each in four sections between a position and two short-axis reference positions on the outer surface of the fitting portion, which are positions corresponding to two short-axis intersections that are intersections of the short axis and the virtual contour line There are a total of four at least one curved surface portion, and the deformation adjusting rib portions are at least one in four sections between the two long axis reference positions and the four locking claws. Four are provided.

本発明に係るグロメットインナ、グロメット、及び、ワイヤハーネスは、グロメットインナの嵌合部が被止水面に形成された貫通孔に嵌合し係止爪部によって当該貫通孔の縁部に係止され、グロメットインナの装着部に装着されたグロメットアウタが被止水面に接触し当該被止水面との間を止水する。そして、グロメットインナ、グロメット、及び、ワイヤハーネスは、例えば、グロメットインナが貫通孔に対して相対回転しねじれが発生した場合であっても、当該ねじれに応じたグロメットインナの嵌合部の変形が変形調整リブ部によって調整されることで、各係止爪部と貫通孔の縁部との係止状態を適正な状態で維持することができる。この結果、グロメットインナ、グロメット、及び、ワイヤハーネスは、確実に組み付けることができる、という効果を奏する。   In the grommet inner, the grommet, and the wire harness according to the present invention, the fitting portion of the grommet inner is fitted into the through hole formed in the water surface to be locked, and is locked to the edge portion of the through hole by the locking claw portion. The grommet outer mounted on the mounting portion of the grommet inner comes into contact with the water-stopped surface and stops water between the water-blocked surface. The grommet inner, the grommet, and the wire harness, for example, even when the grommet inner rotates relative to the through-hole and a twist occurs, the deformation of the fitting portion of the grommet inner according to the twist is performed. By adjusting with the deformation adjusting rib portion, the locking state between each locking claw portion and the edge of the through hole can be maintained in an appropriate state. As a result, there is an effect that the grommet inner, the grommet, and the wire harness can be reliably assembled.

図１は、実施形態に係るグロメットの概略構成を表す断面斜視図である。FIG. 1 is a cross-sectional perspective view illustrating a schematic configuration of the grommet according to the embodiment. 図２は、実施形態に係るグロメットの概略構成を表す分解斜視図である。FIG. 2 is an exploded perspective view illustrating a schematic configuration of the grommet according to the embodiment. 図３は、実施形態に係るグロメットの概略構成を表す分解斜視図である。FIG. 3 is an exploded perspective view illustrating a schematic configuration of the grommet according to the embodiment. 図４は、実施形態に係るグロメットの係止爪部を含む部分断面図である。FIG. 4 is a partial cross-sectional view including a locking claw portion of the grommet according to the embodiment. 図５は、実施形態に係るグロメットの概略構成を表す斜視図である。FIG. 5 is a perspective view illustrating a schematic configuration of the grommet according to the embodiment. 図６は、実施形態に係るグロメットの変形調整リブ部を含む部分断面図である。FIG. 6 is a partial cross-sectional view including a deformation adjusting rib portion of the grommet according to the embodiment. 図７は、実施形態に係るグロメットにおける仮想輪郭線について説明する模式図である。FIG. 7 is a schematic diagram illustrating a virtual contour line in the grommet according to the embodiment. 図８は、実施形態に係るグロメットにおける嵌合部側の平面図である。FIG. 8 is a plan view of the fitting portion side in the grommet according to the embodiment. 図９は、実施形態に係るグロメットの変形調整リブ部を含む部分斜視図である。FIG. 9 is a partial perspective view including a deformation adjusting rib portion of the grommet according to the embodiment. 図１０は、実施形態に係るグロメットの変形調整リブ部を含む部分斜視図である。FIG. 10 is a partial perspective view including a deformation adjusting rib portion of the grommet according to the embodiment. 図１１は、変形例に係るグロメットにおける仮想輪郭線について説明する模式図である。FIG. 11 is a schematic diagram illustrating a virtual contour line in a grommet according to a modification.

以下に、本発明に係る実施形態を図面に基づいて詳細に説明する。なお、この実施形態によりこの発明が限定されるものではない。また、下記実施形態における構成要素には、当業者が置換可能かつ容易なもの、あるいは実質的に同一のものが含まれる。   Embodiments according to the present invention will be described below in detail with reference to the drawings. In addition, this invention is not limited by this embodiment. In addition, constituent elements in the following embodiments include those that can be easily replaced by those skilled in the art or those that are substantially the same.

［実施形態］
図１に示す本実施形態のグロメット１は、車両等に配索されるワイヤハーネスＷＨに組み込まれ、取付パネル１００に形成された貫通孔１０１を介して当該取付パネル１００を境界にして区画される２つの空間に渡って電線Ｗを配索する際に当該貫通孔１０１に適用されるものである。取付パネル１００は、例えば、車両のボデー等を構成する金属板であり、貫通孔１０１は、当該取付パネル１００を板厚方向に貫通する。当該取付パネル１００等を境界にして区画される２つの空間とは、例えば、車内空間と車外空間である。ここで、ワイヤハーネスＷＨは、例えば、車両に搭載される各装置間の接続のために、電源供給や信号通信に用いられる複数の電線Ｗを束にして集合部品とし、コネクタ等で複数の電線Ｗを一度に各装置に接続するようにしたものである。ワイヤハーネスＷＨは、電線Ｗと、当該電線Ｗが挿通されるグロメット１とを備える。電線Ｗは、例えば、複数の導電性の金属素線を撚り合わせた導体部（芯線）と、当該導体部の外側を覆う絶縁性の被覆部とを含んで構成される。ワイヤハーネスＷＨは、複数の電線Ｗを束ねて集約し束ねられた電線Ｗの端部に接続部としてのコネクタ等を介して各種機器が電気的に接続される。そして、グロメット１は、当該ワイヤハーネスＷＨの電線Ｗが挿通され当該電線Ｗの周囲に外装された状態で貫通孔１０１に組み付けられ、取付パネル１００の一方の面によって構成される被止水面１０２に密着して装着されることで、貫通孔１０１を通る電線Ｗを保護すると共に当該貫通孔１０１を防水するものである。グロメット１は、貫通孔１０１の防水の他、防塵、遮音等の機能も有する。以下、各図を参照してグロメット１の構成について詳細に説明する。なお、ワイヤハーネスＷＨは、この他、例えば、コルゲートチューブ、樹脂テープ、プロテクタ等の外装部材、電気接続箱、固定具など種々の構成部品を含んで構成されてもよい。 [Embodiment]
A grommet 1 of the present embodiment shown in FIG. 1 is incorporated in a wire harness WH routed in a vehicle or the like, and is partitioned with the mounting panel 100 as a boundary through a through hole 101 formed in the mounting panel 100. This is applied to the through-hole 101 when routing the electric wire W over two spaces. The mounting panel 100 is, for example, a metal plate that constitutes a vehicle body or the like, and the through hole 101 penetrates the mounting panel 100 in the plate thickness direction. The two spaces partitioned with the mounting panel 100 or the like as a boundary are, for example, a vehicle interior space and a vehicle exterior space. Here, the wire harness WH is, for example, a bundle of a plurality of electric wires W used for power supply and signal communication for connection between devices mounted on a vehicle, and is a collective part. W is connected to each device at a time. The wire harness WH includes an electric wire W and a grommet 1 through which the electric wire W is inserted. The electric wire W includes, for example, a conductor portion (core wire) obtained by twisting a plurality of conductive metal strands and an insulating covering portion that covers the outside of the conductor portion. In the wire harness WH, various devices are electrically connected to an end portion of the bundled electric wires W by bundling and bundling a plurality of electric wires W via a connector or the like as a connecting portion. And the grommet 1 is assembled | attached to the through-hole 101 in the state which the electric wire W of the said wire harness WH was penetrated, and was coat | covered around the said electric wire W, and to the to-be-sealed water surface 102 comprised by one surface of the attachment panel 100 By being attached in close contact, the wire W passing through the through hole 101 is protected and the through hole 101 is waterproofed. The grommet 1 has functions such as dust proofing and sound insulation in addition to waterproofing of the through hole 101. Hereinafter, the configuration of the grommet 1 will be described in detail with reference to the drawings. In addition, the wire harness WH may be configured to include various components such as an exterior member such as a corrugated tube, a resin tape, and a protector, an electrical connection box, and a fixture.

なお、以下では、説明を分かり易くするために、便宜的に互いに交差する第１方向、第２方向、及び、第３方向のうち、第１方向を「軸方向Ｘ」といい、第２方向を「長軸方向Ｙ」といい、第３方向を「短軸方向Ｚ」という。典型的には、第１方向としての軸方向Ｘと第２方向としての長軸方向Ｙと第３方向としての短軸方向Ｚとは、相互に直交する。ここでは、軸方向Ｘは、取付パネル１００の板厚方向に相当し、長軸方向Ｙ、短軸方向Ｚは、取付パネル１００の延在方向に相当する。貫通孔１０１は、取付パネル１００を軸方向Ｘに貫通し、取付パネル１００を境界にして軸方向Ｘの両側に区画される２つの空間に渡って電線Ｗを貫通させる。以下の説明で用いる各方向は、特に断りのない限り、グロメット１の各部が相互に組み付けられ、当該グロメット１が取付パネル１００の貫通孔１０１に組み付けられた状態での方向として説明する。   In the following, for the sake of easy understanding, the first direction of the first direction, the second direction, and the third direction intersecting each other for convenience is referred to as an “axial direction X”, and the second direction. Is referred to as “major axis direction Y”, and the third direction is referred to as “minor axis direction Z”. Typically, the axial direction X as the first direction, the major axis direction Y as the second direction, and the minor axis direction Z as the third direction are orthogonal to each other. Here, the axial direction X corresponds to the plate thickness direction of the mounting panel 100, and the major axis direction Y and the minor axis direction Z correspond to the extending direction of the mounting panel 100. The through hole 101 penetrates the mounting panel 100 in the axial direction X, and allows the electric wire W to pass through two spaces partitioned on both sides in the axial direction X with the mounting panel 100 as a boundary. Each direction used in the following description will be described as a direction in which the respective parts of the grommet 1 are assembled to each other and the grommet 1 is assembled to the through hole 101 of the mounting panel 100 unless otherwise specified.

具体的には、本実施形態のグロメット１は、図１、図２、図３に示すように、グロメットアウタ２と、グロメットインナ３とを備え、当該グロメットインナ３の所定の位置に変形調整リブ部３３を設けることで、より確実な組み付けの実現を図ったものである。グロメット１は、グロメットアウタ２がグロメットインナ３と比較して相対的に高い可撓性を有して形成され、グロメットインナ３がグロメットアウタ２と比較して相対的に高い剛性を有して形成される。   Specifically, as shown in FIGS. 1, 2, and 3, the grommet 1 of the present embodiment includes a grommet outer 2 and a grommet inner 3, and a deformation adjusting rib at a predetermined position of the grommet inner 3. By providing the portion 33, more reliable assembly is achieved. In the grommet 1, the grommet outer 2 is formed with relatively high flexibility compared to the grommet inner 3, and the grommet inner 3 is formed with relatively high rigidity compared to the grommet outer 2. Is done.

グロメットアウタ２は、グロメットインナ３に装着されると共に内側に電線Ｗが挿通され、被止水面１０２に接触し当該被止水面１０２との間を止水可能なシール部材である。グロメットアウタ２は、本体部２１、管状部２２、及び、リップ部２３を含んで構成され、これらが一体となって弾性体として形成される。グロメットアウタ２は、例えば、ゴムや熱可塑性エラストマー等、剛性の低い可撓性の弾性材料（例えば、エチレン−プロピレン−ジエンゴム（ＥＰＤＭ）等）により形成される。   The grommet outer 2 is a seal member that is attached to the grommet inner 3 and has an electric wire W inserted therethrough so as to come into contact with the water surface 102 and stop water between the water surface 102. The grommet outer 2 includes a main body portion 21, a tubular portion 22, and a lip portion 23, which are integrally formed as an elastic body. The grommet outer 2 is formed of a flexible elastic material (for example, ethylene-propylene-diene rubber (EPDM) or the like) having low rigidity such as rubber or thermoplastic elastomer.

本体部２１は、管状部２２、及び、リップ部２３が設けられる台座部を構成する部分である。本体部２１は、筒状部２１ａ、閉塞端面部２１ｂ、及び、フランジ部２１ｃを含んで構成され、全体としてドーム状に形成される。筒状部２１ａは、軸線が軸方向Ｘに沿った環状、ここでは筒状に形成される。本実施形態の筒状部２１ａは、軸方向Ｘに沿って視て（以下、「軸方向視」という場合がある。）、長軸方向Ｙが長手方向となる略長円形状に形成される。筒状部２１ａは、軸方向Ｘの一方側が閉塞端面部２１ｂによって閉塞される一方、軸方向Ｘの他方側が開口している。本体部２１は、筒状部２１ａと閉塞端面部２１ｂとによって区画された内部空間部が嵌合挿通空間部２１ｄを構成する。嵌合挿通空間部２１ｄは、グロメットインナ３が嵌合されると共に電線Ｗが挿通される空間部である。フランジ部２１ｃは、筒状部２１ａの内周面に、軸線が軸方向Ｘに沿った環状の板状の部分として形成される。フランジ部２１ｃは、筒状部２１ａの内周面において、閉塞端面部２１ｂ側の端部でかつ軸方向Ｘに沿って閉塞端面部２１ｂと間隔をあけた位置に形成される。フランジ部２１ｃは、筒状部２１ａの内周面の全周に渡って形成される。   The main body portion 21 is a portion constituting a pedestal portion on which the tubular portion 22 and the lip portion 23 are provided. The main body portion 21 includes a cylindrical portion 21a, a closed end surface portion 21b, and a flange portion 21c, and is formed in a dome shape as a whole. The cylindrical portion 21a is formed in an annular shape, in this example, a cylindrical shape, with the axis line along the axial direction X. The cylindrical portion 21a of the present embodiment is formed in a substantially oval shape in which the major axis direction Y is the longitudinal direction when viewed along the axial direction X (hereinafter sometimes referred to as “axial view”). . The cylindrical part 21a is closed on one side in the axial direction X by the closed end face part 21b, and is open on the other side in the axial direction X. As for the main-body part 21, the internal space part divided by the cylindrical part 21a and the obstruction | occlusion end surface part 21b comprises the fitting insertion space part 21d. The fitting insertion space portion 21d is a space portion into which the grommet inner 3 is fitted and the electric wire W is inserted. The flange portion 21c is formed on the inner peripheral surface of the tubular portion 21a as an annular plate-shaped portion whose axis is along the axial direction X. The flange portion 21c is formed on the inner peripheral surface of the cylindrical portion 21a at an end portion on the closed end surface portion 21b side and at a position spaced apart from the closed end surface portion 21b along the axial direction X. The flange portion 21c is formed over the entire circumference of the inner peripheral surface of the cylindrical portion 21a.

管状部２２は、管状に形成され内側に電線Ｗが挿通される部分である。管状部２２は、円筒管状に形成され、内部空間部が挿通空間部２２ａを構成する。挿通空間部２２ａは、電線Ｗが挿通される空間部である。管状部２２は、一端が本体部２１の閉塞端面部２１ｂに接続され嵌合挿通空間部２１ｄに向けて開口する。ここでは、管状部２２は、当該閉塞端面部２１ｂ側の端部にて屈曲し長軸方向Ｙに沿って延在する。グロメットアウタ２は、本体部２１の内部空間部である嵌合挿通空間部２１ｄと管状部２２の内部空間部である挿通空間部２２ａとが連通され、当該嵌合挿通空間部２１ｄと当該挿通空間部２２ａとに渡って電線Ｗが挿通される。   The tubular portion 22 is a portion that is formed in a tubular shape and into which the electric wire W is inserted. The tubular portion 22 is formed in a cylindrical tubular shape, and the internal space portion constitutes the insertion space portion 22a. The insertion space portion 22a is a space portion through which the electric wire W is inserted. One end of the tubular portion 22 is connected to the closed end surface portion 21b of the main body portion 21 and opens toward the fitting insertion space portion 21d. Here, the tubular portion 22 is bent at the end portion on the closed end surface portion 21 b side and extends along the long axis direction Y. In the grommet outer 2, a fitting insertion space portion 21 d that is an internal space portion of the main body portion 21 and an insertion space portion 22 a that is an internal space portion of the tubular portion 22 are communicated, and the fitting insertion space portion 21 d and the insertion space are connected. The electric wire W is inserted through the portion 22a.

リップ部２３は、被止水面１０２に接触し当該被止水面１０２との間を止水する部分である。ここでは、リップ部２３は、第１リップ部２３ａと、第２リップ部２３ｂとを含んで構成される。第１リップ部２３ａは、本体部２１の筒状部２１ａの軸方向Ｘの他方側（閉塞端面部２１ｂ側とは反対側）の開口の全周に渡って環状に形成される。第２リップ部２３ｂは、第１リップ部２３ａの内側、ここでは、フランジ部２１ｃの全周に渡って環状に形成される。第１リップ部２３ａ、第２リップ部２３ｂは、軸方向に沿って閉塞端面部２１ｂ側とは反対側に延在しその先端部を外周側に湾曲して形成されている。第１リップ部２３ａ、第２リップ部２３ｂは、グロメット１が貫通孔１０１に装着された状態で、弾性変形によって貫通孔１０１の周縁の被止水面１０２に密着し、貫通孔１０１の全周縁をシールするよう構成される。   The lip portion 23 is a portion that contacts the waterproof surface 102 and stops water between the waterproof surface 102. Here, the lip portion 23 includes a first lip portion 23a and a second lip portion 23b. The first lip portion 23a is formed in an annular shape over the entire circumference of the opening on the other side in the axial direction X of the cylindrical portion 21a of the main body portion 21 (the side opposite to the closed end surface portion 21b side). The second lip portion 23b is formed in an annular shape inside the first lip portion 23a, here, over the entire circumference of the flange portion 21c. The first lip portion 23a and the second lip portion 23b extend along the axial direction to the side opposite to the closed end surface portion 21b side, and are formed by curving the tip portion toward the outer peripheral side. The first lip portion 23a and the second lip portion 23b are in close contact with the to-be-sealed water surface 102 at the periphery of the through hole 101 by elastic deformation in a state where the grommet 1 is attached to the through hole 101, and the entire periphery of the through hole 101 is Configured to seal.

グロメットインナ３は、グロメットアウタ２が装着されると共に内側に電線Ｗが挿通され、貫通孔１０１に嵌合可能な嵌合部材である。グロメットインナ３は、本体部３１、係止爪部３２、及び、変形調整リブ部３３とを含んで構成され、これらが一体となってグロメットアウタ２より高剛性の剛体として形成される。グロメットインナ３は、例えば、グロメットアウタ２よりも剛性の高いポリプロピレン（ＰＰ）等の合成樹脂材により形成される。   The grommet inner 3 is a fitting member in which the grommet outer 2 is mounted and the electric wire W is inserted inside and can be fitted into the through hole 101. The grommet inner 3 includes a main body portion 31, a locking claw portion 32, and a deformation adjustment rib portion 33, which are integrally formed as a rigid body having higher rigidity than the grommet outer 2. The grommet inner 3 is made of, for example, a synthetic resin material such as polypropylene (PP) having higher rigidity than the grommet outer 2.

本体部３１は、グロメットアウタ２が装着されると共に貫通孔１０１に嵌合される部分である。本体部３１は、装着部３４と嵌合部３５とを含んで構成され、全体として、電線Ｗを挿通可能な略長円形状の環状に形成される。   The main body 31 is a part to which the grommet outer 2 is attached and fitted into the through hole 101. The main body 31 includes a mounting portion 34 and a fitting portion 35, and is formed in a substantially oval annular shape through which the electric wire W can be inserted as a whole.

装着部３４は、本体部３１において、グロメットアウタ２が装着される部分である。装着部３４は、軸方向Ｘが板厚方向となる枠板状に形成される。装着部３４は、グロメットアウタ２の本体部２１の形状に応じた形状に形成され、ここでは、軸線が軸方向Ｘに沿った略Ｃ字型形状の板状のフランジ部分として形成される。言い換えれば、装着部３４は、グロメットアウタ２の本体部２１の筒状部２１ａと同様に長軸方向Ｙが長手方向となる略長円形状の枠状に形成され、その上で、長軸方向Ｙの一方の端部（頂点）に当該枠状の部分を長軸方向Ｙに沿って貫通する切り欠き３４ａを有した形状となっている。装着部３４は、軸方向Ｘに対してグロメットアウタ２の本体部２１の閉塞端面部２１ｂとフランジ部２１ｃとの間に位置し保持される位置関係で、当該グロメットアウタ２が装着される。   The mounting portion 34 is a portion in the main body 31 where the grommet outer 2 is mounted. The mounting portion 34 is formed in a frame plate shape in which the axial direction X is the plate thickness direction. The mounting portion 34 is formed in a shape corresponding to the shape of the main body portion 21 of the grommet outer 2. Here, the mounting portion 34 is formed as a substantially C-shaped plate-like flange portion whose axis is along the axial direction X. In other words, the mounting portion 34 is formed in a substantially oval frame shape in which the major axis direction Y is the longitudinal direction, like the cylindrical portion 21a of the main body portion 21 of the grommet outer 2, and then the major axis direction One end (vertex) of Y has a shape having a notch 34a that penetrates the frame-shaped portion along the long axis direction Y. The mounting part 34 is mounted on the grommet outer 2 in a positional relationship between the closed end surface part 21b and the flange part 21c of the main body part 21 of the grommet outer 2 with respect to the axial direction X.

嵌合部３５は、電線Ｗを挿通可能な環状に形成され、本体部３１において、貫通孔１０１に嵌合可能な部分である。嵌合部３５は、軸線が軸方向Ｘに沿った環状、ここでは筒状に形成される。本実施形態の嵌合部３５は、軸方向視にて、長軸方向Ｙが長手方向となる略長円形状に形成される。ここでは、嵌合部３５は、略長円形状の二重壁体として形成されているがこれに限らず二重壁体でなくてもよい。嵌合部３５は、軸方向Ｘの一方側の端部に装着部３４が一体に形成される。嵌合部３５は、内側面（内周面）３５ａ側が装着部３４とほぼ揃っている一方、外側面（外周面）３５ｂ側が装着部３４より小さくなっている。本体部３１は、装着部３４、嵌合部３５の内部空間部が挿通空間部３１ａを構成する。挿通空間部３１ａは、電線Ｗが挿通される空間部である。嵌合部３５は、挿通空間部３１ａとは反対側の面、すなわち、外側面３５ｂに後述の係止爪部３２、変形調整リブ部３３が形成される。   The fitting portion 35 is formed in an annular shape through which the electric wire W can be inserted, and is a portion that can be fitted into the through hole 101 in the main body portion 31. The fitting portion 35 is formed in an annular shape, in this case, in a cylindrical shape, with the axis line along the axial direction X. The fitting portion 35 of the present embodiment is formed in a substantially oval shape with the major axis direction Y being the longitudinal direction when viewed in the axial direction. Here, although the fitting part 35 is formed as a substantially elliptical double wall body, it is not restricted to this and may not be a double wall body. As for the fitting part 35, the mounting part 34 is integrally formed in the edge part of the one side of the axial direction X. As shown in FIG. The fitting portion 35 has an inner surface (inner peripheral surface) 35 a side substantially aligned with the mounting portion 34, while an outer surface (outer peripheral surface) 35 b side is smaller than the mounting portion 34. As for the main-body part 31, the internal space part of the mounting part 34 and the fitting part 35 comprises the insertion space part 31a. The insertion space portion 31a is a space portion through which the electric wire W is inserted. The fitting portion 35 is formed with a locking claw portion 32 and a deformation adjusting rib portion 33 to be described later on a surface opposite to the insertion space portion 31a, that is, an outer surface 35b.

さらに、嵌合部３５は、長軸方向Ｙの一方の端部（頂点）に設けられる端部係止部３５ｃと、長軸方向Ｙの他方の端部（頂点）に設けられる支点部３５ｄとを有する。ここで、本実施形態の本体部３１は、装着部３４、嵌合部３５が長軸方向Ｙの一方の端部にて切断されており、当該切断部分に形成される端部である開放端部３１ｂ、３１ｃを相互に開放可能な構成とされる。本体部３１における切断部分は、軸方向Ｘに沿って装着部３４と嵌合部３５とに渡って形成され、すなわち、開放端部３１ｂ、３１ｃは、装着部３４と嵌合部３５とに渡って形成される。端部係止部３５ｃは、嵌合部３５において当該開放端部３１ｂ、３１ｃを相互に係止可能な部分である。端部係止部３５ｃは、例えば、開放端部３１ｂ、３１ｃの一方に形成される爪部３５ｅと、開放端部３１ｂ、３１ｃの他方に形成され当該爪部３５ｅを係止する被係止部３５ｆとによって構成される。支点部３５ｄは、嵌合部３５において上述の切り欠き３４ａと軸方向Ｘに対向する位置に形成される。支点部３５ｄは、嵌合部３５において、開放端部３１ｂ、３１ｃの開放支点となる部分である。支点部３５ｄは、当該支点部３５ｄを基準として開放端部３１ｂ側と開放端部３１ｃ側とを相対的に開閉可能に連結し、開放端部３１ｂ、３１ｃの開放の際に開放端部３１ｂ側と開放端部３１ｃ側との撓みの基点（支点）となる。ここでは、支点部３５ｄは、稜線が軸方向Ｘに沿うような位置関係で曲面状に折り返されたヒンジ形状に形成されている。本体部３１は、端部係止部３５ｃによって当該開放端部３１ｂ、３１ｃを相互に係止可能である一方、端部係止部３５ｃにおける開放端部３１ｂ、３１ｃの係止を解除することで支点部３５ｄを支点として全体を撓ませながら当該開放端部３１ｂ、３１ｃを相互に開放可能に構成される。本体部３１は、端部係止部３５ｃによって開放端部３１ｂ、３１ｃが相互に係止された状態で、全体として略長円形状の環状をなす。   Furthermore, the fitting portion 35 includes an end locking portion 35c provided at one end (vertex) in the long axis direction Y, and a fulcrum portion 35d provided at the other end (vertex) in the long axis direction Y. Have Here, the main body portion 31 of the present embodiment has an open end that is an end portion formed in the cut portion, in which the mounting portion 34 and the fitting portion 35 are cut at one end portion in the long axis direction Y. The parts 31b and 31c can be opened to each other. The cut portion of the main body portion 31 is formed across the mounting portion 34 and the fitting portion 35 along the axial direction X, that is, the open end portions 31 b and 31 c extend across the mounting portion 34 and the fitting portion 35. Formed. The end locking portion 35 c is a portion that can lock the open end portions 31 b and 31 c with each other in the fitting portion 35. The end locking portion 35c includes, for example, a claw portion 35e formed on one of the open end portions 31b and 31c and a locked portion formed on the other of the open end portions 31b and 31c to lock the claw portion 35e. 35f. The fulcrum part 35d is formed in the fitting part 35 at a position facing the above-described notch 34a in the axial direction X. The fulcrum part 35d is a part which becomes the open fulcrum of the open end parts 31b and 31c in the fitting part 35. The fulcrum part 35d connects the open end part 31b side and the open end part 31c side so as to be relatively openable and closable with reference to the fulcrum part 35d, and opens the open end parts 31b and 31c. It becomes a base point (fulcrum) of bending with the open end 31c side. Here, the fulcrum part 35d is formed in a hinge shape that is folded back into a curved surface with a positional relationship such that the ridgeline is along the axial direction X. The main body 31 can lock the open ends 31b and 31c with each other by the end locking portion 35c, while releasing the locking of the open ends 31b and 31c in the end locking portion 35c. The open end portions 31b and 31c are configured to be openable to each other while the whole is bent with the fulcrum portion 35d as a fulcrum. The main body 31 has a substantially oval annular shape as a whole in a state where the open end portions 31b and 31c are locked to each other by the end locking portion 35c.

係止爪部３２は、嵌合部３５の外側面３５ｂから突出して形成され貫通孔１０１の縁部に係止可能なロック部である。係止爪部３２は、貫通孔１０１の縁部に係止可能な爪状に形成される。ここでは、係止爪部３２は、より詳細には、図４に示すように、外側面３５ｂから外側（挿通空間部３１ａ側とは反対側）に向けて突出して延在するアーム部３２ａと、アーム部３２ａの先端部に形成される爪部３２ｂとを含んで形成される。アーム部３２ａは、可撓性を有するアーム状に形成される部分であり、嵌合部３５の外側面３５ｂにおいて、軸方向Ｘにおける装着部３４側とは反対側の端部から軸方向Ｘに沿って装着部３４側に向けて延在して形成される。爪部３２ｂは、アーム部３２ａの先端部から外側（挿通空間部３１ａ側とは反対側）に向けて突出した爪状に形成される。爪部３２ｂは、軸方向Ｘの装着部３４側の面が貫通孔１０１の縁部と接触し係止される係止面３２ｃを構成する。本実施形態の係止爪部３２は、嵌合部３５の外側面３５ｂに４つ形成される。   The locking claw portion 32 is a lock portion that protrudes from the outer surface 35 b of the fitting portion 35 and can be locked to the edge of the through hole 101. The locking claw portion 32 is formed in a claw shape that can be locked to the edge of the through hole 101. Here, more specifically, as shown in FIG. 4, the locking claw portion 32 includes an arm portion 32 a that protrudes and extends from the outer surface 35 b toward the outer side (the side opposite to the insertion space portion 31 a side). And a claw portion 32b formed at the tip of the arm portion 32a. The arm portion 32a is a portion formed in the shape of a flexible arm. In the outer surface 35b of the fitting portion 35, the end portion on the side opposite to the mounting portion 34 side in the axial direction X extends in the axial direction X. And extending toward the mounting portion 34 side. The claw portion 32b is formed in a claw shape that protrudes from the distal end portion of the arm portion 32a to the outside (the side opposite to the insertion space portion 31a side). The claw portion 32 b constitutes a locking surface 32 c in which the surface on the mounting portion 34 side in the axial direction X comes into contact with and is locked with the edge portion of the through hole 101. Four locking claws 32 of the present embodiment are formed on the outer surface 35 b of the fitting portion 35.

変形調整リブ部３３は、嵌合部３５の外側面３５ｂから突出して形成され貫通孔１０１の内面１０１ａと当接可能な部分である。変形調整リブ部３３は、軸方向Ｘに沿って延在して形成される。より詳細には、変形調整リブ部３３は、少なくとも軸方向Ｘに沿って装着部３４から係止面３２ｃの形成位置を越える位置まで延在している。変形調整リブ部３３は、図５、図６に示すように、グロメットインナ３が貫通孔１０１に嵌合した状態で、嵌合部３５の外側面３５ｂと貫通孔１０１の内面１０１ａとの間に介在し当該貫通孔１０１の内面１０１ａと当接可能に形成される。変形調整リブ部３３は、例えば、軸方向Ｘと直交する方向の断面形状が三角形状、半円形状、矩形形状等に形成される。ここでは一例として、変形調整リブ部３３は、例えば図６に示すように、当該断面形状が三角形状に形成される。本実施形態の変形調整リブ部３３は、嵌合部３５の外側面３５ｂに４つ形成される。   The deformation adjusting rib portion 33 is a portion that protrudes from the outer side surface 35 b of the fitting portion 35 and that can contact the inner surface 101 a of the through hole 101. The deformation adjusting rib portion 33 is formed to extend along the axial direction X. More specifically, the deformation adjusting rib portion 33 extends from the mounting portion 34 along the axial direction X to a position exceeding the position where the locking surface 32c is formed. As shown in FIGS. 5 and 6, the deformation adjusting rib portion 33 is formed between the outer surface 35 b of the fitting portion 35 and the inner surface 101 a of the through hole 101 in a state where the grommet inner 3 is fitted to the through hole 101. It is formed so as to be able to contact the inner surface 101a of the through hole 101. For example, the deformation adjusting rib portion 33 is formed such that a cross-sectional shape in a direction orthogonal to the axial direction X has a triangular shape, a semicircular shape, a rectangular shape, or the like. Here, as an example, as shown in FIG. 6, for example, the deformation adjusting rib portion 33 is formed in a triangular shape in cross section. Four deformation adjusting rib portions 33 of the present embodiment are formed on the outer side surface 35 b of the fitting portion 35.

なお、貫通孔１０１の形状、グロメットインナ３における嵌合部３５の外側面３５ｂの形状、係止爪部３２、変形調整リブ部３３、端部係止部３５ｃ、支点部３５ｄ等の位置関係については、後で詳細に説明する。   In addition, about the positional relationship of the shape of the through-hole 101, the shape of the outer surface 35b of the fitting part 35 in the grommet inner 3, the latching claw part 32, the deformation | transformation adjustment rib part 33, the edge part latching part 35c, the fulcrum part 35d, etc. Will be described in detail later.

上記のように構成されるグロメット１は、典型的には、グロメットアウタ２、及び、グロメットインナ３が電線Ｗに装着された後に、貫通孔１０１に組み付けられる。例えば、グロメットインナ３は、端部係止部３５ｃにおける開放端部３１ｂ、３１ｃの係止が解除され当該開放端部３１ｂ、３１ｃを相互に開放させた状態で挿通空間部３１ａに電線Ｗが挿通され、その後、端部係止部３５ｃによって当該開放端部３１ｂ、３１ｃが相互に係止される。これにより、グロメットインナ３は、電線Ｗの端部にコネクタ等が設けられている場合でも簡単に挿通空間部３１ａに当該電線Ｗを挿通させることができる。この場合、グロメットアウタ２は、例えば、管状部２２等を弾性変形させながら押し広げつつ電線Ｗの端部のコネクタと共に当該電線Ｗを嵌合挿通空間部２１ｄ、挿通空間部２２ａに挿通させることができる。そして、グロメット１は、グロメットインナ３の装着部３４、及び、嵌合部３５がグロメットアウタ２の本体部２１の嵌合挿通空間部２１ｄに嵌合され、装着部３４が本体部２１の閉塞端面部２１ｂとフランジ部２１ｃとの間に位置し保持されることで、装着部３４に当該グロメットアウタ２が装着され、グロメットアウタ２とグロメットインナ３とが一体化される。そして、グロメット１は、グロメットインナ３の嵌合部３５が取付パネル１００の被止水面１０２側から貫通孔１０１に押し込まれ嵌合される。このとき、グロメット１は、グロメットインナ３の各係止爪部３２のアーム部３２ａが貫通孔１０１の縁部に押圧されることで撓みながら嵌合され、各係止爪部３２の爪部３２ｂが取付パネル１００の他方側（被止水面１０２とは反対側）に完全に進出すると、当該撓んだアーム部３２ａが元の位置に復帰し、各係止爪部３２の係止面３２ｃが縁部に係止される（図４、図５参照）。これにより、グロメット１は、貫通孔１０１への組み付けが完了する。グロメット１は、グロメットインナ３の嵌合部３５が貫通孔１０１に嵌合され各係止爪部３２が貫通孔１０１の縁部に係止された状態で、第１リップ部２３ａ、第２リップ部２３ｂが弾性変形しつつ貫通孔１０１の周縁の被止水面１０２に密着し、貫通孔１０１の全周縁をシールする。また、この状態で、グロメット１は、変形調整リブ部３３が嵌合部３５の外側面３５ｂと貫通孔１０１の内面１０１ａとの間に介在し当該貫通孔１０１の内面１０１ａと当接する（図５、図６参照）。   The grommet 1 configured as described above is typically assembled into the through hole 101 after the grommet outer 2 and the grommet inner 3 are attached to the electric wire W. For example, in the grommet inner 3, the electric wire W is inserted into the insertion space portion 31a in a state where the locking of the open ends 31b and 31c in the end locking portion 35c is released and the open ends 31b and 31c are opened to each other. Thereafter, the open end portions 31b and 31c are locked to each other by the end locking portion 35c. Thereby, the grommet inner 3 can insert the said electric wire W easily in the insertion space part 31a, even when the connector etc. are provided in the edge part of the electric wire W. FIG. In this case, for example, the grommet outer 2 allows the electric wire W to be inserted into the fitting insertion space portion 21d and the insertion space portion 22a together with the connector at the end of the electric wire W while expanding the tubular portion 22 and the like while elastically deforming the tubular portion 22 and the like. it can. In the grommet 1, the mounting portion 34 of the grommet inner 3 and the fitting portion 35 are fitted into the fitting insertion space portion 21 d of the main body portion 21 of the grommet outer 2, and the mounting portion 34 is the closed end surface of the main body portion 21. The grommet outer 2 is mounted on the mounting portion 34 by positioning and holding between the portion 21b and the flange portion 21c, and the grommet outer 2 and the grommet inner 3 are integrated. Then, the grommet 1 is fitted by the fitting portion 35 of the grommet inner 3 being pushed into the through hole 101 from the water surface 102 side of the mounting panel 100. At this time, the grommet 1 is fitted while being bent by the arm portion 32 a of each locking claw portion 32 of the grommet inner 3 being pressed against the edge portion of the through hole 101, and the claw portion 32 b of each locking claw portion 32. Is completely advanced to the other side of the mounting panel 100 (the side opposite to the waterproof surface 102), the bent arm portion 32a returns to the original position, and the locking surface 32c of each locking claw portion 32 is restored. Locked to the edge (see FIGS. 4 and 5). Thereby, the assembly of the grommet 1 to the through hole 101 is completed. The grommet 1 includes the first lip portion 23a and the second lip in a state where the fitting portion 35 of the grommet inner 3 is fitted in the through hole 101 and each locking claw portion 32 is locked to the edge portion of the through hole 101. The portion 23b is in close contact with the to-be-sealed water surface 102 at the periphery of the through hole 101 while elastically deforming, and seals the entire periphery of the through hole 101. Further, in this state, in the grommet 1, the deformation adjusting rib portion 33 is interposed between the outer side surface 35b of the fitting portion 35 and the inner surface 101a of the through hole 101 and comes into contact with the inner surface 101a of the through hole 101 (FIG. 5). FIG. 6).

そして、本実施形態のグロメットインナ３は、図７、図８、図９、図１０に示すように、貫通孔１０１の内面１０１ａ、嵌合部３５の外側面３５ｂが仮想輪郭線Ｌ１に沿って形成されると共に、係止爪部３２、変形調整リブ部３３が当該仮想輪郭線Ｌ１において所定の位置関係になるように設けられることで、より確実な組み付けの実現が図られている。   In the grommet inner 3 of the present embodiment, as shown in FIGS. 7, 8, 9, and 10, the inner surface 101a of the through hole 101 and the outer surface 35b of the fitting portion 35 are along the virtual contour line L1. While being formed, the locking claw portion 32 and the deformation adjusting rib portion 33 are provided so as to have a predetermined positional relationship in the virtual contour line L1, thereby realizing more reliable assembly.

ここで、仮想輪郭線Ｌ１は、図７に示すように、長軸Ｌ２と当該長軸Ｌ２と直交する短軸Ｌ３との交点である基準点Ｐ１に対して点対称形（言い換えれば、長軸Ｌ２、及び、短軸Ｌ３に対して線対称形）で、かつ、長軸Ｌ２に沿った長さが短軸Ｌ３に沿った長さよりも長く、かつ、少なくとも長軸Ｌ２に沿った長軸方向の両端が曲線である環状の仮想線として予め設計的に設定される。ここでは、長軸Ｌ２は、長軸方向Ｙに沿った軸線であり、短軸Ｌ３は、短軸方向Ｚに沿った軸線である。本実施形態の仮想輪郭線Ｌ１は、長円形状として形成される。ここで、当該長円形状とは、典型的には、長軸Ｌ２に沿った対向する一対の直線部分と、これらの一対の直線部分を結ぶ略円弧上の曲線部分からなる形状と定義することができる。   Here, as shown in FIG. 7, the virtual contour line L1 is point-symmetric with respect to a reference point P1 that is the intersection of the long axis L2 and the short axis L3 orthogonal to the long axis L2 (in other words, the long axis L2 and line-symmetric with respect to the short axis L3), the length along the long axis L2 is longer than the length along the short axis L3, and at least the long axis direction along the long axis L2 Are designed in advance as an annular virtual line having curved ends. Here, the major axis L2 is an axis along the major axis direction Y, and the minor axis L3 is an axis along the minor axis direction Z. The virtual contour line L1 of the present embodiment is formed as an oval shape. Here, the oval shape is typically defined as a shape composed of a pair of opposing linear portions along the major axis L2 and a curved portion on a substantially arc connecting the pair of linear portions. Can do.

貫通孔１０１の内面１０１ａ、及び、嵌合部３５の外側面３５ｂは、当該仮想輪郭線Ｌ１に沿う形状に形成され、すなわちここでは、軸方向視において、長円形状となるように形成される。図７では、貫通孔１０１の内面１０１ａ、及び、嵌合部３５の外側面３５ｂは、グロメットインナ３が貫通孔１０１に嵌合した状態で、内面１０１ａが当該仮想輪郭線Ｌ１の外側に位置し、外側面３５ｂが当該仮想輪郭線Ｌ１の内側に位置し互いに対向するものとして図示しているが、内面１０１ａ、外側面３５ｂの仮想輪郭線Ｌ１に対する内外の関係はこれに限らず、内面１０１ａが外側面３５ｂの外側に位置しかつ両者が概ね仮想輪郭線Ｌ１に沿った形状となっていればよい。またここでは、グロメットアウタ２の筒状部２１ａ、フランジ部２１ｃ、第１リップ部２３ａ、第２リップ部２３ｂ、グロメットインナ３の装着部３４、嵌合部３５の内側面３５ａ等も、当該仮想輪郭線Ｌ１に沿う形状に形成され、すなわち、軸方向視において、長円形状となるように形成され、グロメット１の全体が軸方向視において、長円形状となるように形成される。グロメット１は、基準点Ｐ１側から嵌合部３５の内側面３５ａ、嵌合部３５の外側面３５ｂ、貫通孔１０１の内面１０１ａ、第２リップ部２３ｂ、第１リップ部２３ａの順で段階的に大きな長円形状となるように形成されている。   The inner surface 101a of the through hole 101 and the outer surface 35b of the fitting portion 35 are formed in a shape along the virtual contour line L1, that is, here, are formed to have an oval shape when viewed in the axial direction. . In FIG. 7, the inner surface 101 a of the through hole 101 and the outer surface 35 b of the fitting portion 35 are located on the outer side of the virtual contour line L <b> 1 in a state where the grommet inner 3 is fitted to the through hole 101. Although the outer surface 35b is illustrated as being located inside the virtual contour L1 and facing each other, the inner and outer relations of the inner surface 101a and the outer surface 35b with respect to the virtual contour L1 are not limited thereto, and the inner surface 101a It suffices that they are located outside the outer side surface 35b and both have a shape substantially along the virtual contour line L1. Further, here, the cylindrical portion 21a, the flange portion 21c, the first lip portion 23a, the second lip portion 23b, the mounting portion 34 of the grommet inner 3, the inner side surface 35a of the fitting portion 35, and the like of the grommet outer 2 It is formed in a shape along the contour line L1, that is, formed in an elliptical shape when viewed in the axial direction, and the entire grommet 1 is formed in an elliptical shape when viewed in the axial direction. The grommet 1 is stepped from the reference point P1 side in the order of the inner surface 35a of the fitting portion 35, the outer surface 35b of the fitting portion 35, the inner surface 101a of the through hole 101, the second lip portion 23b, and the first lip portion 23a. It is formed to have a large oval shape.

そして、係止爪部３２は、図７、図８に示すように、嵌合部３５の外側面３５ｂの２つの長軸基準位置Ｐ２と、２つの短軸基準位置Ｐ３との間の４つの区間における各曲面部分に少なくとも１つずつ、合計４つが設けられる。２つの長軸基準位置Ｐ２は、長軸Ｌ２と仮想輪郭線Ｌ１との交点である２つの長軸交点Ｐ２１に対応した位置である。長軸交点Ｐ２１は、仮想輪郭線Ｌ１における長軸方向Ｙの両頂点に相当する。２つの短軸基準位置Ｐ３は、短軸Ｌ３と仮想輪郭線Ｌ１との交点である２つの短軸交点Ｐ３１に対応した位置である。短軸交点Ｐ３１は、長円形状における直線部分の中点に相当する。本実施形態の４つの係止爪部３２は、基準点Ｐ１に対して点対称な位置（言い換えれば、長軸Ｌ２、及び、短軸Ｌ３に対して線対称形な位置）に形成される。   As shown in FIGS. 7 and 8, the locking claw portion 32 includes four long axis reference positions P <b> 2 on the outer surface 35 b of the fitting portion 35 and four short axis reference positions P <b> 3. A total of four are provided, at least one for each curved surface portion in the section. The two major axis reference positions P2 are positions corresponding to the two major axis intersections P21 that are the intersections of the major axis L2 and the virtual contour line L1. The major axis intersection P21 corresponds to both vertices in the major axis direction Y of the virtual contour line L1. The two short axis reference positions P3 are positions corresponding to two short axis intersection points P31 that are intersection points of the short axis L3 and the virtual contour line L1. The short axis intersection point P31 corresponds to the midpoint of the straight line portion in the oval shape. The four locking claws 32 of the present embodiment are formed at positions that are point-symmetric with respect to the reference point P1 (in other words, positions that are line-symmetric with respect to the long axis L2 and the short axis L3).

さらに、変形調整リブ部３３は、図７、図８に示すように、２つの長軸基準位置Ｐ２と上記のように配置される４つの係止爪部３２との間の４つの区間に少なくとも１つずつ、合計４つが設けられる。本実施形態の４つの変形調整リブ部３３は、基準点Ｐ１に対して点対称な位置（言い換えれば、長軸Ｌ２、及び、短軸Ｌ３に対して線対称形な位置）に形成される。   Further, as shown in FIGS. 7 and 8, the deformation adjusting rib portion 33 is at least in four sections between the two major axis reference positions P2 and the four locking claws 32 arranged as described above. A total of four are provided one by one. The four deformation adjustment rib portions 33 of the present embodiment are formed at positions that are point-symmetric with respect to the reference point P1 (in other words, positions that are line-symmetric with respect to the long axis L2 and the short axis L3).

ここで、上述した端部係止部３５ｃは、図７、図８等に示すように、２つの長軸基準位置Ｐ２の一方側の曲面部分に設けられ、支点部３５ｄは、２つの長軸基準位置Ｐ２の他方側の曲面部分に設けられる。そして、長軸方向Ｙの一方側の２つの変形調整リブ部３３は、図７、図８、図９等に示すように、外側面３５ｂの周方向に対して端部係止部３５ｃを挟む位置に形成される。また、長軸方向Ｙの他方側の２つの変形調整リブ部３３は、図７、図８、図１０等に示すように、外側面３５ｂの周方向に対して支点部３５ｄを挟む位置に形成される。   Here, the end locking portion 35c described above is provided on the curved surface portion on one side of the two long axis reference positions P2, as shown in FIGS. 7 and 8, and the fulcrum portion 35d has two long axes. It is provided on the curved surface portion on the other side of the reference position P2. The two deformation adjusting ribs 33 on one side in the long axis direction Y sandwich the end locking part 35c with respect to the circumferential direction of the outer side surface 35b as shown in FIGS. Formed in position. Further, the two deformation adjusting ribs 33 on the other side in the long axis direction Y are formed at positions sandwiching the fulcrum part 35d with respect to the circumferential direction of the outer surface 35b, as shown in FIG. 7, FIG. 8, FIG. Is done.

また、本実施形態の各変形調整リブ部３３は、貫通孔１０１の縁部によって押し潰し可能ないわゆる潰しリブ部として形成される。ここでは、各変形調整リブ部３３は、グロメットインナ３が貫通孔１０１に嵌合していない状態で、外側面３５ｂからの突出量Ｄ１（図９参照）が、当該各変形調整リブ部３３が設けられている位置における外側面３５ｂと内面１０１ａとの間隔Ｄ２（図７参照）以上になるように形成される（Ｄ１≧Ｄ２）。これにより、各変形調整リブ部３３は、グロメットインナ３の嵌合部３５を貫通孔１０１に嵌合させる動作に伴って貫通孔１０１の縁部によって押し潰され、内面１０１ａとの隙間がほぼなくなるようにすることができる。なお、突出量Ｄ１の最大値は、嵌合部３５の貫通孔１０１への嵌合が可能な範囲に限られる。   Further, each deformation adjusting rib portion 33 of the present embodiment is formed as a so-called crushing rib portion that can be crushed by the edge portion of the through hole 101. Here, each deformation adjustment rib portion 33 has a protrusion amount D1 (see FIG. 9) from the outer surface 35b in a state where the grommet inner 3 is not fitted in the through-hole 101, and each deformation adjustment rib portion 33 It is formed so as to be not less than the distance D2 (see FIG. 7) between the outer surface 35b and the inner surface 101a at the provided position (D1 ≧ D2). Thereby, each deformation | transformation adjustment rib part 33 is crushed by the edge part of the through-hole 101 with the operation | movement which fits the fitting part 35 of the grommet inner 3 to the through-hole 101, and the clearance gap between the inner surfaces 101a is almost eliminated. Can be. Note that the maximum value of the protrusion amount D1 is limited to a range in which the fitting portion 35 can be fitted into the through hole 101.

以上で説明したグロメットインナ３によれば、被止水面１０２に接触し当該被止水面１０２との間を止水可能であるグロメットアウタ２が装着される装着部３４と、装着部３４と一体で電線Ｗを挿通可能な環状に形成され、被止水面１０２に形成された貫通孔１０１に嵌合可能である嵌合部３５と、嵌合部３５の外側面３５ｂから突出して形成され貫通孔１０１の縁部に係止可能である係止爪部３２と、嵌合部３５の外側面３５ｂから突出して形成され貫通孔１０１の内面１０１ａと当接可能である変形調整リブ部３３とを備え、貫通孔１０１の内面１０１ａ、及び、嵌合部３５の外側面３５ｂは、長軸Ｌ２と当該長軸Ｌ２と直交する短軸Ｌ３との交点である基準点Ｐ１に対して対称形で、かつ、長軸Ｌ２に沿った長さが短軸Ｌ３に沿った長さよりも長く、かつ、少なくとも長軸Ｌ２に沿った長軸方向Ｙの両端が曲線である環状の仮想輪郭線Ｌ１に沿う形状に形成され、係止爪部３２は、長軸Ｌ２と仮想輪郭線Ｌ１との交点である２つの長軸交点Ｐ２１に対応した位置である嵌合部３５の外側面３５ｂの２つの長軸基準位置Ｐ２と、短軸Ｌ３と仮想輪郭線Ｌ１との交点である２つの短軸交点Ｐ３１に対応した位置である嵌合部３５の外側面３５ｂの２つの短軸基準位置Ｐ３との間の４つの区間における各曲面部分に少なくとも１つずつ、合計４つが設けられ、変形調整リブ部３３は、２つの長軸基準位置Ｐ２と４つの係止爪部３２との間の４つの区間に少なくとも１つずつ、合計４つが設けられる。以上で説明したグロメット１によれば、被止水面１０２に接触し当該被止水面１０２との間を止水可能であるグロメットアウタ２と、グロメットアウタ２が装着される上記グロメットインナ３とを備える。以上で説明したワイヤハーネスＷＨによれば、電線Ｗと、被止水面１０２に接触し当該被止水面１０２との間を止水可能であるグロメットアウタ２、及び、グロメットアウタ２が装着される上記グロメットインナ３を有するグロメット１とを備える。   According to the grommet inner 3 described above, the mounting portion 34 to which the grommet outer 2 that contacts the water-stopped surface 102 and can stop water between the water-stopped surface 102 is mounted, and the mounting portion 34 are integrated. The through hole 101 is formed so as to protrude from the outer surface 35b of the fitting portion 35 and the fitting portion 35 that are formed in an annular shape through which the electric wire W can be inserted and can be fitted into the through hole 101 formed in the waterproof surface 102. A locking claw portion 32 that can be locked to the edge portion, and a deformation adjustment rib portion 33 that protrudes from the outer surface 35b of the fitting portion 35 and that can contact the inner surface 101a of the through hole 101, The inner surface 101a of the through hole 101 and the outer surface 35b of the fitting portion 35 are symmetrical with respect to a reference point P1 that is an intersection of the major axis L2 and the minor axis L3 orthogonal to the major axis L2, and The length along the long axis L2 is the length along the short axis L3. Longer than that, and at least both ends in the major axis direction Y along the major axis L2 are formed in a shape along an annular virtual contour line L1 that is a curve, and the locking claw portion 32 has a major axis L2 and a virtual contour line. 2 which is the intersection of the two major axis reference positions P2 of the outer surface 35b of the fitting portion 35, which is the position corresponding to the two major axis intersections P21 that are the intersections with L1, and the minor axis L3 and the virtual contour line L1. A total of four are provided at least one in each curved surface portion in the four sections between the two short axis reference positions P3 of the outer surface 35b of the fitting portion 35 that are positions corresponding to the two short axis intersection points P31, A total of four deformation adjustment ribs 33 are provided, at least one in each of the four sections between the two long axis reference positions P2 and the four locking claws 32. According to the grommet 1 described above, the grommet outer 2 that comes into contact with the water surface 102 and can stop water between the water surface 102 and the grommet inner 3 to which the grommet outer 2 is attached are provided. . According to the wire harness WH described above, the grommet outer 2 that is in contact with the wire W and the waterproof surface 102 and is capable of stopping water between the waterproof surface 102 and the grommet outer 2 is mounted. A grommet 1 having a grommet inner 3.

したがって、グロメットインナ３、グロメット１、ワイヤハーネスＷＨは、グロメットインナ３の嵌合部３５が被止水面１０２に形成された貫通孔１０１に嵌合し係止爪部３２によって当該貫通孔１０１の縁部に係止され、グロメットインナ３の装着部３４に装着されたグロメットアウタ２が被止水面１０２に接触し当該被止水面１０２との間を止水する。そして、グロメットインナ３、グロメット１、ワイヤハーネスＷＨは、例えば、グロメットインナ３が貫通孔１０１に対して相対回転しねじれが発生した場合であっても、貫通孔１０１の内面１０１ａ、嵌合部３５の外側面３５ｂが仮想輪郭線Ｌ１に沿って形成されると共に、係止爪部３２、変形調整リブ部３３が当該仮想輪郭線Ｌ１に対して上記の位置関係になるように設けられることで、当該ねじれに応じたグロメットインナ３の嵌合部３５の変形が変形調整リブ部３３によって調整され、これにより、各係止爪部３２と貫通孔１０１の縁部との係止状態を適正な状態で維持することができる。   Therefore, the grommet inner 3, the grommet 1, and the wire harness WH are fitted to the through-hole 101 formed in the water-stopped surface 102 by the fitting portion 35 of the grommet inner 3, and the edge of the through-hole 101 by the locking claw portion 32. The grommet outer 2 that is locked to the portion and attached to the attachment portion 34 of the grommet inner 3 comes into contact with the waterproof surface 102 and stops water between the waterproof surface 102. And the grommet inner 3, the grommet 1, and the wire harness WH are, for example, the case where the grommet inner 3 rotates relative to the through hole 101 and the torsion occurs, and the inner surface 101a of the through hole 101 and the fitting portion 35. The outer side surface 35b is formed along the virtual contour line L1, and the locking claw portion 32 and the deformation adjustment rib portion 33 are provided so as to have the above positional relationship with respect to the virtual contour line L1, The deformation of the fitting portion 35 of the grommet inner 3 according to the twist is adjusted by the deformation adjusting rib portion 33, whereby the locking state between each locking claw portion 32 and the edge of the through hole 101 is in an appropriate state. Can be maintained.

例えば、グロメットインナ３は、図８中に矢印Ａに示すように、グロメットインナ３が貫通孔１０１に対して向かって左回りに相対回転した場合、図８中の矢印Ａ１に示すように、貫通孔１０１の内面１０１ａによって、図８中の左上の変形調整リブ部３３と、当該変形調整リブ部３３に対して基準点Ｐ１を挟んで反対側に対向して位置する変形調整リブ部３３とが互いに接近する方向への押圧力が付加される。これにより、グロメットインナ３は、図８中の矢印Ａ２に示すように、上記２つの変形調整リブ部３３が接近する方向に押圧されるのに伴って、上記接近する２つの変形調整リブ部３３に対して長軸Ｌ２、及び、短軸Ｌ３を挟んで反対側に位置する２つの係止爪部３２、ここでは、図８中の右上の係止爪部３２と、当該係止爪部３２に対して基準点Ｐ１を挟んで反対側に対向して位置する係止爪部３２とが外側（挿通空間部３１ａ側とは反対側）に向かって相互に離間する方向への拡張力が作用する。このため、グロメットインナ３は、上記２つの変形調整リブ部３３に当該押圧力が付加されることに伴って上記２つの係止爪部３２に作用する当該拡張力によって当該２つの係止爪部３２が外側に向かって相互に離間するように変形する。つまり、グロメットインナ３は、上記接近する２つの変形調整リブ部３３の作用によって当該２つの係止爪部３２の係止面３２ｃと貫通孔１０１の縁部との各係り代が減らない方向に変形させることができる。   For example, when the grommet inner 3 rotates counterclockwise relative to the through hole 101 as shown by an arrow A in FIG. 8, the grommet inner 3 penetrates as shown by an arrow A1 in FIG. Due to the inner surface 101a of the hole 101, an upper left deformation adjustment rib portion 33 in FIG. 8 and a deformation adjustment rib portion 33 located opposite to the deformation adjustment rib portion 33 across the reference point P1 are provided. A pressing force in a direction approaching each other is applied. As a result, as indicated by an arrow A2 in FIG. 8, the grommet inner 3 is pressed in the direction in which the two deformation adjustment rib portions 33 approach each other, and the two deformation adjustment rib portions 33 that approach each other. The two locking claws 32 located on the opposite side across the long axis L2 and the short axis L3, here, the locking claw 32 at the upper right in FIG. On the other hand, an expansion force is exerted in a direction in which the locking claws 32 located opposite to each other on the opposite side across the reference point P1 are separated from each other toward the outside (the side opposite to the insertion space 31a side). To do. For this reason, the grommet inner 3 has the two locking claw portions due to the expansion force acting on the two locking claw portions 32 when the pressing force is applied to the two deformation adjusting rib portions 33. It deform | transforms so that 32 may mutually space apart toward an outer side. That is, the grommet inner 3 is in a direction in which the engagement allowance between the locking surface 32c of the two locking claws 32 and the edge of the through hole 101 is not reduced by the action of the two deformation adjusting ribs 33 approaching. Can be deformed.

これとは逆に、グロメットインナ３は、図８中に矢印Ｂに示すように、グロメットインナ３が反対回り、すなわち、グロメットインナ３が貫通孔１０１に対して向かって右回り相対回転した場合、図８中の矢印Ｂ１に示すように、貫通孔１０１の内面１０１ａによって、図８中の右上の変形調整リブ部３３と、当該変形調整リブ部３３に対して基準点Ｐ１を挟んで反対側に対向して位置する変形調整リブ部３３とが互いに接近する方向への押圧力が付加される。これにより、グロメットインナ３は、図８中の矢印Ｂ２に示すように、上記２つの変形調整リブ部３３が接近する方向に押圧されるのに伴って、上記接近する２つの変形調整リブ部３３に対して長軸Ｌ２、及び、短軸Ｌ３を挟んで反対側に位置する２つの係止爪部３２、ここでは、図８中の左上の係止爪部３２と、当該係止爪部３２に対して基準点Ｐ１を挟んで反対側に対向して位置する係止爪部３２とが外側に向かって相互に離間する方向への拡張力が作用し変形する。つまりこの場合も、グロメットインナ３は、上記接近する２つの変形調整リブ部３３の作用によって当該２つの係止爪部３２の係止面３２ｃと貫通孔１０１の縁部との係り代が減らない方向に変形させることができる。   On the contrary, the grommet inner 3 is rotated in the opposite direction, that is, when the grommet inner 3 is rotated clockwise relative to the through hole 101 as shown by an arrow B in FIG. As shown by an arrow B1 in FIG. 8, the inner surface 101a of the through hole 101 is on the opposite side of the deformation adjustment rib 33 on the upper right in FIG. 8 and the reference point P1 with respect to the deformation adjustment rib 33 in FIG. A pressing force is applied in a direction in which the deformation adjustment rib portions 33 positioned facing each other approach each other. As a result, as indicated by an arrow B2 in FIG. 8, the grommet inner 3 is pressed in the direction in which the two deformation adjustment rib portions 33 approach each other, and the two deformation adjustment rib portions 33 that are approached. The two locking claws 32 located on the opposite side across the long axis L2 and the short axis L3, here, the locking claw 32 at the upper left in FIG. On the other hand, an expansion force in a direction in which the locking claw portions 32 positioned opposite to each other on the opposite side across the reference point P1 are separated from each other toward the outside acts and deforms. That is, also in this case, the grommet inner 3 does not reduce the engagement between the engaging surface 32c of the two engaging claws 32 and the edge of the through hole 101 by the action of the two deformation adjusting rib portions 33 that are close to each other. Can be deformed in the direction.

この結果、グロメットインナ３、グロメット１、ワイヤハーネスＷＨは、各係止爪部３２の係止面３２ｃと貫通孔１０１の縁部との係り代が十分に確保された状態を安定して維持することができるので、各係止爪部３２と貫通孔１０１の縁部との係止状態を適正な状態で維持することができ、当該グロメットインナ３を貫通孔１０１に確実に組み付けることができる。またここでは、グロメットインナ３、グロメット１、ワイヤハーネスＷＨは、変形調整リブ部３３が２つの長軸基準位置Ｐ２と４つの係止爪部３２との間の４つの区間に少なくとも１つずつ設けられることから、上記のようにグロメットインナ３と貫通孔１０１との両方向への相対回転に対応することができ、この点でも当該グロメットインナ３を貫通孔１０１に確実に組み付けることができる。   As a result, the grommet inner 3, the grommet 1, and the wire harness WH stably maintain the state in which the engagement margin between the locking surface 32c of each locking claw 32 and the edge of the through hole 101 is sufficiently secured. Therefore, the locking state between each locking claw portion 32 and the edge of the through hole 101 can be maintained in an appropriate state, and the grommet inner 3 can be reliably assembled to the through hole 101. Also, here, the grommet inner 3, the grommet 1, and the wire harness WH are provided at least one in each of the four sections between the two long axis reference positions P2 and the four locking claws 32 with the deformation adjusting ribs 33. Therefore, as described above, it is possible to cope with the relative rotation of the grommet inner 3 and the through hole 101 in both directions, and also in this respect, the grommet inner 3 can be reliably assembled to the through hole 101.

また、グロメットインナ３、グロメット１、ワイヤハーネスＷＨは、各変形調整リブ部３３が嵌合部３５の外側面３５ｂと貫通孔１０１の内面１０１ａとの間に介在し当該貫通孔１０１の内面１０１ａと当接することで、長軸方向Ｙ、及び、短軸方向Ｚに対するガタ詰めリブ部としても機能し必要隙間を低減することができる。これにより、グロメットインナ３、グロメット１、ワイヤハーネスＷＨは、長軸方向Ｙ、及び、短軸方向Ｚに対するグロメットインナ３と貫通孔１０１との相対移動（オフセット）を抑制することができ、これによっても、各係止爪部３２の係止面３２ｃと貫通孔１０１の縁部との係り代が十分に確保された状態を維持することができるので、この点でも各係止爪部３２と貫通孔１０１の縁部との係止状態を適正な状態で維持することができ、当該グロメットインナ３を貫通孔１０１に確実に組み付けることができる。   Further, in the grommet inner 3, the grommet 1, and the wire harness WH, each deformation adjusting rib portion 33 is interposed between the outer surface 35 b of the fitting portion 35 and the inner surface 101 a of the through hole 101, and the inner surface 101 a of the through hole 101. By abutting, it also functions as a loose rib portion with respect to the major axis direction Y and the minor axis direction Z, and the necessary gap can be reduced. Thereby, the grommet inner 3, the grommet 1, and the wire harness WH can suppress the relative movement (offset) between the grommet inner 3 and the through hole 101 with respect to the major axis direction Y and the minor axis direction Z. In addition, since it is possible to maintain a state where the engagement margin between the locking surface 32c of each locking claw portion 32 and the edge portion of the through hole 101 is sufficiently secured, also in this respect, the locking claw portion 32 and the through-hole 101 are penetrated. The locked state with the edge of the hole 101 can be maintained in an appropriate state, and the grommet inner 3 can be reliably assembled to the through hole 101.

そして、上記のようにグロメットインナ３、グロメット１、ワイヤハーネスＷＨは、グロメットインナ３を貫通孔１０１に確実に組み付けることができるので、第１リップ部２３ａ、第２リップ部２３ｂと貫通孔１０１の周縁の被止水面１０２との接触状態を適正に維持することができ、これにより、適正な防水性を確実に確保することができる。   And as mentioned above, since the grommet inner 3, the grommet 1, and the wire harness WH can be reliably assembled | attached to the through-hole 101, the 1st lip part 23a, the 2nd lip part 23b, and the through-hole 101 The contact state with the peripheral water-proof surface 102 can be properly maintained, thereby ensuring appropriate waterproofness.

さらに、以上で説明したグロメットインナ３、グロメット１、ワイヤハーネスＷＨによれば、４つの係止爪部３２、及び、４つの変形調整リブ部３３は、それぞれ基準点Ｐ１に対して対称な位置に形成される。したがって、グロメットインナ３、グロメット１、ワイヤハーネスＷＨは、当該グロメットインナ３が、対称な位置に配置された４つの係止爪部３２によって貫通孔１０１の縁部に係止されるので、係止力をバランスよく作用させることができ、その上で、グロメットインナ３の嵌合部３５の変形が変形調整リブ部３３によって調整されることで、グロメットインナ３を貫通孔１０１により確実に組み付けることができる。   Furthermore, according to the grommet inner 3, the grommet 1, and the wire harness WH described above, the four locking claws 32 and the four deformation adjustment ribs 33 are respectively in positions symmetrical with respect to the reference point P1. It is formed. Therefore, the grommet inner 3, the grommet 1, and the wire harness WH are locked because the grommet inner 3 is locked to the edge of the through-hole 101 by the four locking claws 32 arranged at symmetrical positions. The force can be applied in a balanced manner, and the deformation of the fitting portion 35 of the grommet inner 3 is adjusted by the deformation adjusting rib portion 33, so that the grommet inner 3 can be reliably assembled by the through hole 101. it can.

さらに、以上で説明したグロメットインナ３、グロメット１、ワイヤハーネスＷＨによれば、変形調整リブ部３３は、貫通孔１０１の縁部によって押し潰し可能な潰しリブ部である。したがって、グロメットインナ３、グロメット１、ワイヤハーネスＷＨは、嵌合部３５を貫通孔１０１に嵌合させる動作に伴って、各変形調整リブ部３３が貫通孔１０１の縁部によって押し潰され、貫通孔１０１の内面１０１ａとの隙間をほぼなくすことができる。これにより、グロメットインナ３、グロメット１、ワイヤハーネスＷＨは、各変形調整リブ部３３による変形調整の機能、及び、ガタ詰めの機能を好適に発揮することができ、この点でもグロメットインナ３を貫通孔１０１により確実に組み付けることができる。   Furthermore, according to the grommet inner 3, the grommet 1, and the wire harness WH described above, the deformation adjusting rib portion 33 is a crushing rib portion that can be crushed by the edge portion of the through hole 101. Therefore, in the grommet inner 3, the grommet 1, and the wire harness WH, each deformation adjusting rib portion 33 is crushed by the edge portion of the through hole 101 in accordance with the operation of fitting the fitting portion 35 into the through hole 101. The gap with the inner surface 101a of the hole 101 can be almost eliminated. Thereby, the grommet inner 3, the grommet 1, and the wire harness WH can suitably exhibit the function of deformation adjustment by the respective deformation adjustment rib portions 33 and the function of loosening, and the grommet inner 3 also penetrates in this respect. The hole 101 can be securely assembled.

さらに、以上で説明したグロメットインナ３、グロメット１、ワイヤハーネスＷＨによれば、嵌合部３５は、２つの長軸基準位置Ｐ２の一方側の曲面部分に設けられ相互に開放可能な開放端部３１ｂ、３１ｃを相互に係止可能な端部係止部３５ｃと、２つの長軸基準位置Ｐ２の他方側の曲面部分に設けられ開放端部３１ｂ、３１ｃの開放支点となる支点部３５ｄとを有する。したがって、グロメットインナ３、グロメット１、ワイヤハーネスＷＨは、当該グロメットインナ３が、他の部位よりも相対的に変形しやすい変形容易部として端部係止部３５ｃや支点部３５ｄを含む構成である場合に、係止爪部３２、変形調整リブ部３３が上記のような位置関係で配置されることで、変形調整リブ部３３による嵌合部３５の変形調整の作用をより顕著に奏することができ、各係止爪部３２と貫通孔１０１の縁部との係止状態を適正な状態で維持する効果をより顕著に発揮することができる。   Furthermore, according to the grommet inner 3, the grommet 1, and the wire harness WH described above, the fitting portion 35 is provided on the curved surface portion on one side of the two long axis reference positions P2 and can be opened to each other. An end locking portion 35c capable of locking 31b and 31c to each other, and a fulcrum portion 35d provided on the curved surface portion on the other side of the two long-axis reference positions P2 and serving as an opening fulcrum of the open end portions 31b and 31c. Have. Therefore, the grommet inner 3, the grommet 1, and the wire harness WH are configured such that the grommet inner 3 includes an end locking portion 35c and a fulcrum portion 35d as an easily deformable portion that is relatively easily deformable than other portions. In this case, by arranging the locking claw portion 32 and the deformation adjustment rib portion 33 in the positional relationship as described above, the deformation adjustment action of the fitting portion 35 by the deformation adjustment rib portion 33 can be more remarkably exhibited. In addition, the effect of maintaining the locking state between each locking claw portion 32 and the edge of the through-hole 101 in an appropriate state can be exhibited more remarkably.

なお、上述した本発明の実施形態に係るグロメットインナ、グロメット、及び、ワイヤハーネスは、上述した実施形態に限定されず、特許請求の範囲に記載された範囲で種々の変更が可能である。本実施形態に係るグロメットインナ、グロメット、及び、ワイヤハーネスは、以上で説明した各実施形態、変形例の構成要素を適宜組み合わせることで構成してもよい。   The grommet inner, the grommet, and the wire harness according to the above-described embodiment of the present invention are not limited to the above-described embodiment, and various modifications can be made within the scope described in the claims. The grommet inner, the grommet, and the wire harness according to the present embodiment may be configured by appropriately combining the components of the embodiments and modified examples described above.

以上の説明では、嵌合部３５は、長軸方向Ｙの一方の端部に設けられる端部係止部３５ｃと、長軸方向Ｙの他方の端部に設けられる支点部３５ｄとを有するものとして説明したがこれに限らない。嵌合部３５は、端部係止部３５ｃ、支点部３５ｄが上述とは異なる位置に配置されていてもよいし、開放端部３１ｂ、３１ｃ、端部係止部３５ｃ、支点部３５ｄ自体を備えない構成であってもよい。   In the above description, the fitting portion 35 has the end portion locking portion 35c provided at one end portion in the long axis direction Y and the fulcrum portion 35d provided at the other end portion in the long axis direction Y. However, the present invention is not limited to this. As for the fitting part 35, the edge part latching | locking part 35c and the fulcrum part 35d may be arrange | positioned in the position different from the above-mentioned, and open end part 31b, 31c, the edge part latching | locking part 35c, and fulcrum part 35d itself are included. The structure which is not provided may be sufficient.

以上の説明では、係止爪部３２は、アーム部３２ａと、爪部３２ｂとを含んで形成されるものとして説明したがこれに限らず、貫通孔１０１の縁部に係止可能な爪状に形成されるものであればよく、例えば、一部がアーム部３２ａを備えない構成であってもよい。   In the above description, the locking claw portion 32 has been described as including the arm portion 32a and the claw portion 32b. However, the present invention is not limited to this, and the claw shape that can be locked to the edge portion of the through hole 101 is used. For example, a configuration in which a part does not include the arm portion 32a may be used.

以上で説明した係止爪部３２は、２つの長軸基準位置Ｐ２と２つの短軸基準位置Ｐ３との間の４つの区間における各曲面部分に少なくとも１つずつ設けられればよく、例えば、当該係止爪部３２が２つ設けられている区間があってもよく、すなわち、合計５つ以上が設けられていてもよい。また、４つの係止爪部３２は、基準点Ｐ１に対して対称な位置に形成されるものとして説明したがこれに限らず、２つの長軸基準位置Ｐ２と２つの短軸基準位置Ｐ３との間の４つの区間における各曲面部分に少なくとも１つずつ設けられていれば非対称な位置であってもよい。   The locking claws 32 described above may be provided at least one on each curved surface portion in the four sections between the two long axis reference positions P2 and the two short axis reference positions P3. There may be a section in which two locking claws 32 are provided, that is, a total of five or more may be provided. Further, the four locking claws 32 are described as being formed at positions symmetrical with respect to the reference point P1, but the present invention is not limited thereto, and two long-axis reference positions P2 and two short-axis reference positions P3 As long as at least one curved surface is provided in each of the four sections in between, the positions may be asymmetric.

同様に、以上で説明した変形調整リブ部３３は、２つの長軸基準位置Ｐ２と４つの係止爪部３２との間の４つの区間に少なくとも１つずつ設けられればよく、例えば、当該変形調整リブ部３３が２つ設けられている区間があってもよく、すなわち、合計５つ以上が設けられていてもよい。また、４つの変形調整リブ部３３は、２つの長軸基準位置Ｐ２と４つの係止爪部３２との間の４つの区間に少なくとも１つずつ設けられていれば非対称な位置であってもよい。   Similarly, the deformation adjusting rib portion 33 described above may be provided at least one each in four sections between the two long axis reference positions P2 and the four locking claws 32. There may be a section in which two adjustment rib portions 33 are provided, that is, a total of five or more may be provided. Even if the four deformation adjusting ribs 33 are provided at least one each in four sections between the two major axis reference positions P2 and the four locking claws 32, even if they are asymmetrical positions. Good.

以上の説明では、仮想輪郭線Ｌ１は、長円形状として形成されるものとして説明したがこれに限らず、例えば、図１１の変形例に示すように、基準点Ｐ１に対して対称形で、かつ、長軸Ｌ２に沿った長さが短軸Ｌ３に沿った長さよりも長く、かつ、少なくとも長軸Ｌ２に沿った長軸方向の両端が曲線である環状の仮想線であれば、いわゆる楕円形状であってもよい。ここで、当該楕円形状とは、典型的には、長軸Ｌ２のある２定点からの距離の和が一定となるような点の集合からなる形状と定義することができる。この場合、短軸交点Ｐ３１は、仮想輪郭線Ｌ１における短軸方向Ｚの両頂点に相当する。   In the above description, the virtual contour line L1 has been described as being formed in an oval shape. However, the virtual contour line L1 is not limited to this, and for example, as illustrated in the modified example of FIG. And if the length along the major axis L2 is longer than the length along the minor axis L3 and at least both ends in the major axis direction along the major axis L2 are annular virtual lines, so-called elliptical It may be a shape. Here, the elliptical shape can be typically defined as a shape composed of a set of points such that the sum of the distances from two fixed points having the major axis L2 is constant. In this case, the short axis intersection point P31 corresponds to both vertices in the short axis direction Z of the virtual contour line L1.

１ グロメット
２ グロメットアウタ
３ グロメットインナ
３１ｂ、３１ｃ 開放端部
３２ 係止爪部
３３ 変形調整リブ部
３４ 装着部
３５ 嵌合部
３５ｂ 外側面
３５ｃ 端部係止部
３５ｄ 支点部
１０１ 貫通孔
１０１ａ 内面
１０２ 被止水面
Ｌ１ 仮想輪郭線
Ｌ２ 長軸
Ｌ３ 短軸
Ｐ１ 基準点
Ｐ２ 長軸基準位置
Ｐ２１ 長軸交点
Ｐ３ 短軸基準位置
Ｐ３１ 短軸交点
Ｗ 電線
ＷＨ ワイヤハーネス
Ｙ 長軸方向 DESCRIPTION OF SYMBOLS 1 Grommet 2 Grommet outer 3 Grommet inner 31b, 31c Open end part 32 Locking claw part 33 Deformation adjustment rib part 34 Mounting part 35 Fitting part 35b Outer side surface 35c End part locking part 35d Support point part 101 Through hole 101a Inner surface 102 Covered Water blocking surface L1 Virtual contour L2 Long axis L3 Short axis P1 Reference point P2 Long axis reference position P21 Long axis intersection P3 Short axis reference position P31 Short axis intersection W Electric wire WH Wire harness Y Long axis direction

Claims (6)

被止水面に接触し当該被止水面との間を止水可能であるグロメットアウタが装着される装着部と、
前記装着部と一体で電線を挿通可能な環状に形成され、前記被止水面に形成された貫通孔に嵌合可能である嵌合部と、
前記嵌合部の外側面から突出して形成され前記貫通孔の縁部に係止可能である係止爪部と、
前記嵌合部の外側面から突出して形成され前記貫通孔の内面と当接可能である変形調整リブ部とを備え、
前記貫通孔の内面、及び、前記嵌合部の外側面は、長軸と当該長軸と直交する短軸との交点である基準点に対して対称形で、かつ、前記長軸に沿った長さが前記短軸に沿った長さよりも長く、かつ、少なくとも前記長軸に沿った長軸方向の両端が曲線である環状の仮想輪郭線に沿う形状に形成され、
前記係止爪部は、前記長軸と前記仮想輪郭線との交点である２つの長軸交点に対応した位置である前記嵌合部の外側面の２つの長軸基準位置と、前記短軸と前記仮想輪郭線との交点である２つの短軸交点に対応した位置である前記嵌合部の外側面の２つの短軸基準位置との間の４つの区間における各曲面部分に少なくとも１つずつ、合計４つが設けられ、
前記変形調整リブ部は、前記２つの長軸基準位置と前記４つの係止爪部との間の４つの区間に少なくとも１つずつ、合計４つが設けられることを特徴とする、
グロメットインナ。 A mounting portion on which a grommet outer that is in contact with the water-stopped surface and can stop water between the water-stopped surface is mounted;
A fitting portion that is formed in an annular shape that can be inserted with an electric wire integrally with the mounting portion, and can be fitted into a through-hole formed in the water-proof surface,
A locking claw portion that protrudes from the outer surface of the fitting portion and can be locked to an edge of the through hole;
A deformation adjusting rib portion that protrudes from the outer surface of the fitting portion and that can contact the inner surface of the through hole;
The inner surface of the through hole and the outer surface of the fitting portion are symmetrical with respect to a reference point that is an intersection of a major axis and a minor axis perpendicular to the major axis, and are along the major axis. The length is longer than the length along the minor axis, and at least both ends in the major axis direction along the major axis are formed in a shape along an annular virtual contour line that is a curve,
The locking claw portion includes two major axis reference positions on the outer surface of the fitting portion, which are positions corresponding to two major axis intersections that are intersections of the major axis and the virtual contour line, and the minor axis. And at least one curved surface portion in each of the four sections between two short-axis reference positions on the outer surface of the fitting portion, which are positions corresponding to two short-axis intersections that are intersections of the virtual contour line and the virtual contour line There are 4 in total,
A total of four deformation adjusting rib portions are provided, at least one in each of four sections between the two long axis reference positions and the four locking claw portions,
Grommet inner. 前記４つの係止爪部、及び、前記４つの変形調整リブ部は、それぞれ前記基準点に対して対称な位置に形成される、
請求項１に記載のグロメットインナ。 The four locking claws and the four deformation adjustment ribs are formed at positions symmetrical with respect to the reference point, respectively.
The grommet inner according to claim 1. 前記変形調整リブ部は、前記貫通孔の縁部によって押し潰し可能な潰しリブ部である、
請求項１又は請求項２に記載のグロメットインナ。 The deformation adjusting rib portion is a crushing rib portion that can be crushed by an edge of the through hole.
The grommet inner according to claim 1 or 2. 前記嵌合部は、前記２つの長軸基準位置の一方側の曲面部分に設けられ相互に開放可能な開放端部を相互に係止可能な端部係止部と、前記２つの長軸基準位置の他方側の曲面部分に設けられ前記開放端部の開放支点となる支点部とを有する、
請求項１乃至請求項３のいずれか１項に記載のグロメットインナ。 The fitting portion is provided on a curved surface portion on one side of the two long axis reference positions, and an end locking portion capable of mutually locking open end portions that can be opened to each other, and the two long axis reference A fulcrum portion provided on the curved surface portion on the other side of the position and serving as an open fulcrum of the open end,
The grommet inner of any one of Claims 1 thru | or 3. 被止水面に接触し当該被止水面との間を止水可能であるグロメットアウタと、
前記グロメットアウタが装着される装着部、前記装着部と一体で電線を挿通可能な環状に形成され、前記被止水面に形成された貫通孔に嵌合可能である嵌合部、前記嵌合部の外側面から突出して形成され前記貫通孔の縁部に係止可能である係止爪部、及び、前記嵌合部の外側面から突出して形成され前記貫通孔の内面と当接可能である変形調整リブ部とを有するグロメットインナとを備え、
前記貫通孔の内面、及び、前記嵌合部の外側面は、長軸と当該長軸と直交する短軸との交点である基準点に対して対称形で、かつ、前記長軸に沿った長さが前記短軸に沿った長さよりも長く、かつ、少なくとも前記長軸に沿った長軸方向の両端が曲線である環状の仮想輪郭線に沿う形状に形成され、
前記係止爪部は、前記長軸と前記仮想輪郭線との交点である２つの長軸交点に対応した位置である前記嵌合部の外側面の２つの長軸基準位置と、前記短軸と前記仮想輪郭線との交点である２つの短軸交点に対応した位置である前記嵌合部の外側面の２つの短軸基準位置との間の４つの区間における各曲面部分に少なくとも１つずつ、合計４つが設けられ、
前記変形調整リブ部は、前記２つの長軸基準位置と前記４つの係止爪部との間の４つの区間に少なくとも１つずつ、合計４つが設けられることを特徴とする、
グロメット。 A grommet outer that comes into contact with the surface to be sealed and is capable of stopping water between the surface to be sealed;
A fitting part to which the grommet outer is attached, a fitting part that is formed in an annular shape through which the electric wire can be inserted integrally with the fitting part, and can be fitted into a through hole formed in the water-proof surface, the fitting part A locking claw portion that protrudes from the outer surface of the through hole and that can be locked to the edge of the through hole, and that protrudes from the outer surface of the fitting portion and can contact the inner surface of the through hole. A grommet inner having a deformation adjusting rib portion,
The inner surface of the through hole and the outer surface of the fitting portion are symmetrical with respect to a reference point that is an intersection of a major axis and a minor axis perpendicular to the major axis, and are along the major axis. The length is longer than the length along the minor axis, and at least both ends in the major axis direction along the major axis are formed in a shape along an annular virtual contour line that is a curve,
The locking claw portion includes two major axis reference positions on the outer surface of the fitting portion, which are positions corresponding to two major axis intersections that are intersections of the major axis and the virtual contour line, and the minor axis. And at least one curved surface portion in each of the four sections between two short-axis reference positions on the outer surface of the fitting portion, which are positions corresponding to two short-axis intersections that are intersections of the virtual contour line and the virtual contour line There are 4 in total,
A total of four deformation adjusting rib portions are provided, at least one in each of four sections between the two long axis reference positions and the four locking claw portions,
Grommet. 電線と、
被止水面に接触し当該被止水面との間を止水可能であるグロメットアウタ、及び、前記グロメットアウタが装着されるグロメットインナを有するグロメットとを備え、
前記グロメットインナは、前記グロメットアウタが装着される装着部、前記装着部と一体で前記電線を挿通可能な環状に形成され、前記被止水面に形成された貫通孔に嵌合可能である嵌合部、前記嵌合部の外側面から突出して形成され前記貫通孔の縁部に係止可能である係止爪部、及び、前記嵌合部の外側面から突出して形成され前記貫通孔の内面と当接可能である変形調整リブ部とを有し、
前記貫通孔の内面、及び、前記嵌合部の外側面は、長軸と当該長軸と直交する短軸との交点である基準点に対して対称形で、かつ、前記長軸に沿った長さが前記短軸に沿った長さよりも長く、かつ、少なくとも前記長軸に沿った長軸方向の両端が曲線である環状の仮想輪郭線に沿う形状に形成され、
前記係止爪部は、前記長軸と前記仮想輪郭線との交点である２つの長軸交点に対応した位置である前記嵌合部の外側面の２つの長軸基準位置と、前記短軸と前記仮想輪郭線との交点である２つの短軸交点に対応した位置である前記嵌合部の外側面の２つの短軸基準位置との間の４つの区間における各曲面部分に少なくとも１つずつ、合計４つが設けられ、
前記変形調整リブ部は、前記２つの長軸基準位置と前記４つの係止爪部との間の４つの区間に少なくとも１つずつ、合計４つが設けられることを特徴とする、
ワイヤハーネス。 Electric wires,
A grommet outer that comes into contact with the water surface to be sealed and can stop water between the water surface to be sealed, and a grommet having a grommet inner to which the grommet outer is mounted,
The grommet inner is a fitting portion to which the grommet outer is attached, a ring that is integral with the attachment portion and into which the electric wire can be inserted, and can be fitted into a through-hole formed in the water-proof surface. A locking claw portion that protrudes from the outer surface of the fitting portion and can be locked to an edge of the through hole, and an inner surface of the through hole that protrudes from the outer surface of the fitting portion. And a deformation adjusting rib portion that can come into contact with
The inner surface of the through hole and the outer surface of the fitting portion are symmetrical with respect to a reference point that is an intersection of a major axis and a minor axis perpendicular to the major axis, and are along the major axis. The length is longer than the length along the minor axis, and at least both ends in the major axis direction along the major axis are formed in a shape along an annular virtual contour line that is a curve,
The locking claw portion includes two major axis reference positions on the outer surface of the fitting portion, which are positions corresponding to two major axis intersections that are intersections of the major axis and the virtual contour line, and the minor axis. And at least one curved surface portion in each of the four sections between two short-axis reference positions on the outer surface of the fitting portion, which are positions corresponding to two short-axis intersections that are intersections of the virtual contour line and the virtual contour line There are 4 in total,
A total of four deformation adjusting rib portions are provided, at least one in each of four sections between the two long axis reference positions and the four locking claw portions,
Wire harness.

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