JP6943631B2 - Grommets and wire harnesses - Google Patents

Grommets and wire harnesses Download PDF

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JP6943631B2
JP6943631B2 JP2017107699A JP2017107699A JP6943631B2 JP 6943631 B2 JP6943631 B2 JP 6943631B2 JP 2017107699 A JP2017107699 A JP 2017107699A JP 2017107699 A JP2017107699 A JP 2017107699A JP 6943631 B2 JP6943631 B2 JP 6943631B2
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grommet
inner member
hole
wire
peripheral surface
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JP2018207586A (en
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貞男 森
貞男 森
敏孝 手綱
敏孝 手綱
ルジタノント サルン
ルジタノント サルン
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Yazaki Corp
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Description

本発明は、電線が貫通する車体パネルの電線貫通孔を塞ぐグロメット、及び、グロメットを有するワイヤーハーネスに関する。 The present invention relates to a grommet that closes an electric wire through hole of a vehicle body panel through which an electric wire penetrates, and a wire harness having the grommet.

従来より種々のグロメットが提案されている（例えば特許文献１）。かかるグロメットの一従来例として図１１〜図１４に示すものがある。図１１〜図１４において、パネル本体１ａとカバー１ｂからなる車体パネル１には、電線貫通孔２が形成されている。この電線貫通孔２に電線Ｗが貫通されている。この電線Ｗの外周にグロメット１００が装着されている。 Various grommets have been conventionally proposed (for example, Patent Document 1). As a conventional example of such a grommet, there is one shown in FIGS. 11 to 14. In FIGS. 11 to 14, the electric wire through hole 2 is formed in the vehicle body panel 1 composed of the panel main body 1a and the cover 1b. The electric wire W is penetrated through the electric wire through hole 2. A grommet 100 is mounted on the outer circumference of the electric wire W.

グロメット１００は、電線貫通孔２内に配置され、電線貫通孔２の内周面に密着するグロメット本体１０１とグロメット本体１０１の内周に配置されるインナー部材１０２とを有する。インナー部材１０２の内部で、電線Ｗが貫通している空間には、充填材１０３が充填されている。充填材１０３がインナー部材１０２の内周面と電線Ｗの外周面に密着している。 The grommet 100 has a grommet main body 101 arranged in the electric wire through hole 2 and in close contact with the inner peripheral surface of the electric wire through hole 2, and an inner member 102 arranged on the inner circumference of the grommet main body 101. Inside the inner member 102, the space through which the electric wire W penetrates is filled with the filler 103. The filler 103 is in close contact with the inner peripheral surface of the inner member 102 and the outer peripheral surface of the electric wire W.

グロメット１００は、車体パネル１の一方側の被水領域３（図１３に示す）と他方側の防水領域４（図１３に示す）に亘って電線Ｗを配策するための電線貫通孔２を防水している。 The grommet 100 provides an electric wire through hole 2 for arranging the electric wire W over the water-covered area 3 (shown in FIG. 13) on one side of the vehicle body panel 1 and the waterproof area 4 (shown in FIG. 13) on the other side. It is waterproof.

グロメット１００は、電線貫通孔２が適正寸法に対しノミナル又は若干大きく（公差内）形成されている場合には、図１４（ａ）に示す無負荷状態のリブ１０１ａが、図１４（ｂ）に示すように圧縮変形し、水密構造となる。そして、グロメット本体１０１からカバー１ｂに作用する反発力が所定範囲内に収まるため、図１５に示すように、カバー１ｂが浮き上がることがない。 In the grommet 100, when the electric wire through hole 2 is formed to be nominal or slightly larger (within tolerance) than the appropriate size, the rib 101a in the no-load state shown in FIG. 14A is shown in FIG. 14B. As shown, it is compressed and deformed to form a watertight structure. Then, since the repulsive force acting on the cover 1b from the grommet main body 101 falls within a predetermined range, the cover 1b does not float as shown in FIG.

特開２００１−６９６４５号公報Japanese Unexamined Patent Publication No. 2001-69645 特開２００１−６９６４６号公報Japanese Unexamined Patent Publication No. 2001-69646

しかしながら、前記従来のグロメット１００では、図１６（ａ）に示すように、電線貫通孔２が縦方向の適正寸法より小さく形成されている場合、または、図１６（ｂ）に示すように、電線貫通孔２が横方向の適正寸法より小さく形成されている場合、カバー１ｂに過大な外力を加えて電線貫通孔２を閉じることになる。すると、図１４（ｃ）に示すように、グロメット本体１０１のリブ１０１ａが過剰に圧縮変形され、グロメット本体１０１からカバー１ｂに作用する反発力が過大になり、カバー１ｂが浮き上がることがあった。 However, in the conventional grommet 100, when the electric wire through hole 2 is formed smaller than the appropriate dimension in the vertical direction as shown in FIG. 16 (a), or as shown in FIG. 16 (b), the electric wire When the through hole 2 is formed to be smaller than the appropriate dimension in the lateral direction, an excessive external force is applied to the cover 1b to close the electric wire through hole 2. Then, as shown in FIG. 14C, the rib 101a of the grommet main body 101 is excessively compressed and deformed, the repulsive force acting on the cover 1b from the grommet main body 101 becomes excessive, and the cover 1b may be lifted.

また、電線貫通孔２が適正寸法に対し公差以上に大きく形成されている場合には、リブ１０１ａが圧縮変形されずに電線貫通孔２の内面に接している状態となり、水密構造とはならない。 Further, when the electric wire through hole 2 is formed larger than the tolerance with respect to the appropriate dimension, the rib 101a is in a state of being in contact with the inner surface of the electric wire through hole 2 without being compressed and deformed, and the structure is not watertight.

そこで、本発明は、前記した課題を解決すべくなされたものであり、グロメットの寸法に対し電線貫通孔が大きい場合のみならず小さい場合にも、水密性を確保した状態で極力適正に取り付けできるグロメット、及び、グロメットを有するワイヤーハーネスを提供することを目的とする。 Therefore, the present invention has been made to solve the above-mentioned problems, and can be mounted as appropriately as possible while ensuring watertightness not only when the wire through hole is large but also when the wire through hole is small with respect to the size of the grommet. It is an object of the present invention to provide a grommet and a wire harness having the grommet.

本発明は、車体パネルの電線貫通孔の内周面に密着し、電線が内部を貫通するグロメット本体と、前記グロメット本体の外周面に設けられ、前記電線貫通孔の内周面に密着するリブと、前記グロメット本体の内周面側に配置され、前記グロメット本体より剛性の高いインナー部材と、前記インナー部材に設けられ、前記インナー部材の外形寸法を可変できる寸法可変手段とを備え、前記寸法可変手段は、前記インナー部材が２つのインナー分割体に分割され、且つ、２つの前記インナー分割体を合体するロック部のロック位置が可変可能に形成されることで前記インナー部材の横方向の寸法を調整可能に形成されたことを特徴とするグロメットである。 The present invention is a rib that is provided on the inner peripheral surface of the wire through hole of the vehicle body panel and the electric wire penetrates the inside of the grommet body and the outer peripheral surface of the grommet body and is in close contact with the inner peripheral surface of the electric wire through hole. When the disposed on the inner peripheral surface of the grommet body, and the inner member having high rigidity than that of the grommet body, provided in the inner member, and a size varying means capable of varying the outer dimensions of the inner member, the dimensions In the variable means, the inner member is divided into two inner divided bodies, and the lock position of the lock portion that combines the two inner divided bodies is variably formed so that the lateral dimension of the inner member is formed. It is a grommet characterized by being formed in an adjustable manner.

本発明によれば、寸法可変手段でインナー部材の外形寸法を可変できるため、リブで水密構造を達成できる範囲が広がる。従って、グロメットの寸法に対し電線貫通孔が大きい場合のみならず小さい場合にも、水密性を確保した状態でグロメットを電線貫通孔に極力適正に取り付けできる。 According to the present invention, since the external dimensions of the inner member can be changed by the dimension-changing means, the range in which the watertight structure can be achieved by the ribs is widened. Therefore, the grommet can be attached to the wire through hole as appropriately as possible while ensuring watertightness not only when the wire through hole is large but also when the wire through hole is small with respect to the size of the grommet.

本発明の第１実施形態を示し、グロメットの設置状態の分解斜視図である。1st Embodiment of this invention is shown, and it is an exploded perspective view of the grommet installation state. 本発明の第１実施形態を示し、グロメットの設置状態の斜視図である。It shows the 1st Embodiment of this invention and is the perspective view of the grommet installation state. 本発明の第１実施形態を示し、グロメットの上面側を見た斜視図である。It is a perspective view which shows the 1st Embodiment of this invention and looked at the upper surface side of the grommet. 本発明の第１実施形態を示し、グロメットの下面側を見た斜視図である。It is a perspective view which shows the 1st Embodiment of this invention and looked at the lower surface side of the grommet. 本発明の第１実施形態を示し、グロメットの断面図である。It is sectional drawing of the grommet which shows the 1st Embodiment of this invention. 本発明の第１実施形態を示し、インナー部材の正面図である。It shows the 1st Embodiment of this invention and is the front view of the inner member. 本発明の第１実施形態を示し、（ａ）はリブの無負荷状態の要部断面図、（ｂ）はリブの圧縮変形状態の断面図である。The first embodiment of the present invention is shown, (a) is a cross-sectional view of a main part of a rib in a no-load state, and (b) is a cross-sectional view of a rib in a compression-deformed state. 本発明の第２実施形態を示し、インナー部材の正面図である。A second embodiment of the present invention is shown, and is a front view of an inner member. 本発明の第２実施形態を示し、（ａ）はインナー部材の横方向の寸法を最も小さくした状態を示す図８のＡ部拡大図、（ｂ）はインナー部材の横方向の寸法を最も広げた状態を示す図８のＡ部拡大図である。A second embodiment of the present invention is shown, (a) is an enlarged view of part A of FIG. 8 showing a state in which the lateral dimension of the inner member is minimized, and (b) is the largest lateral dimension of the inner member. It is an enlarged view of the part A of FIG. 本発明の第３実施形態を示し、インナー部材の正面図である。A third embodiment of the present invention is shown, and is a front view of an inner member. 従来例を示し、グロメットの設置状態の分解斜視図である。A conventional example is shown, and it is an exploded perspective view of the grommet installation state. 従来例を示し、グロメットの設置状態の斜視図である。A conventional example is shown, and it is a perspective view of the grommet installation state. 従来例を示し、グロメットの断面図である。A conventional example is shown, and it is sectional drawing of the grommet. 従来例を示し、（ａ）はグロメット本体のリブ箇所の要部断面図、（ｂ）は車体パネルの電線貫通孔がノミナル又は若干大きい場合における、リブ部の変形状態を示す断面図、（ｃ）は車体パネルの電線貫通孔が小さい場合における、リブ部の変形状態を示す断面図である。A conventional example is shown, (a) is a cross-sectional view of a main part of a rib portion of the grommet body, and (b) is a cross-sectional view showing a deformed state of the rib portion when the electric wire through hole of the vehicle body panel is nominal or slightly large. ) Is a cross-sectional view showing a deformed state of the rib portion when the electric wire through hole of the vehicle body panel is small. 従来例を示し、車体パネルの電線挿通孔がノミナル又は大きい場合における、グロメットの設置状態を示す概略図である。It is a schematic diagram which shows the conventional example and shows the installation state of the grommet when the electric wire insertion hole of a vehicle body panel is nominal or large. 従来例を示し、（ａ）は車体パネルの電線挿通孔が適正な縦寸法より小さい場合に、グロメットを設置した状態を示す概略図、（ｂ）は車体パネルの電線挿通孔が適正な横寸法より小さい場合に、グロメットを設置した状態を示す概略図である。A conventional example is shown, in which (a) is a schematic view showing a state in which a grommet is installed when the electric wire insertion hole of the vehicle body panel is smaller than the appropriate vertical dimension, and (b) is a horizontal dimension in which the electric wire insertion hole of the vehicle body panel is appropriate. It is the schematic which shows the state which installed the grommet when it is smaller.

以下、本発明の実施形態を図面に基づいて説明する。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.

（第１実施形態）
図１〜図７は本発明の第１実施形態を示す。図１及び図２において、車体パネル１には、台形状の電線貫通孔２が形成されている。電線貫通孔２は、パネル本体１ａの溝の上面開口側をカバー１ｂが塞ぐことによって形成されている。この台形状の電線貫通孔２に、ワイヤーハーネスの電線（電線集合体）Ｗが貫通されている。ワイヤーハーネスの電線Ｗは、電線貫通孔２を貫通することによって車体パネル１の一方側の被水領域３（図５に示す）と他方側の防水領域４（図５に示す）に亘って配策される。被水領域３は、例えば車室外（エンジンルーム等）であり、防水領域４は、例えば車室内である。 (First Embodiment)
1 to 7 show a first embodiment of the present invention. In FIGS. 1 and 2, a trapezoidal electric wire through hole 2 is formed in the vehicle body panel 1. The electric wire through hole 2 is formed by the cover 1b closing the upper surface opening side of the groove of the panel main body 1a. The electric wire (electric wire assembly) W of the wire harness is penetrated through the trapezoidal electric wire through hole 2. The electric wire W of the wire harness is distributed over the water-covered area 3 (shown in FIG. 5) on one side of the vehicle body panel 1 and the waterproof area 4 (shown in FIG. 5) on the other side by penetrating the electric wire through hole 2. It will be devised. The water-covered area 3 is, for example, the outside of the vehicle interior (engine room or the like), and the waterproof area 4 is, for example, the interior of the vehicle.

ワイヤーハーネスは、電線Ｗの外周に装着されたグロメット５を有する。このグロメット５によって、車体パネル１の電線貫通孔２が塞がれている。以下、グロメット５の構成を詳しく説明する。 The wire harness has a grommet 5 mounted on the outer circumference of the electric wire W. The wire through hole 2 of the vehicle body panel 1 is closed by the grommet 5. Hereinafter, the configuration of the grommet 5 will be described in detail.

グロメット５は、車体パネル１の電線貫通孔２の内周面に密着するグロメット本体１０と、グロメット本体１０の内周に配置されるインナー部材２０とを備えている。 The grommet 5 includes a grommet main body 10 that is in close contact with the inner peripheral surface of the electric wire through hole 2 of the vehicle body panel 1, and an inner member 20 that is arranged on the inner peripheral circumference of the grommet main body 10.

グロメット本体１０は、弾性材（例えばゴム材）より形成されている。グロメット本体１０は、電線貫通孔２内に配置された外装フレーム１１と、外装フレーム１１の内部に配置された筒部１２と、外装フレーム１１と筒部１２の間を連結して遮蔽する遮蔽壁１３とを備えている。外装フレーム１１は、電線貫通孔２とほぼ同じ寸法の外形輪郭を有する。外装フレーム１１の両端側には、フランジ部１１ａが設けられている。両端側のフランジ部１１ａがパネル本体１ａとカバー１ｂに挟み付けられている。これにより、グロメット５は、電線貫通孔２内に固定されている。 The grommet body 10 is formed of an elastic material (for example, a rubber material). The grommet main body 10 is a shielding wall that connects and shields the exterior frame 11 arranged in the electric wire through hole 2, the cylinder portion 12 arranged inside the exterior frame 11, and the exterior frame 11 and the cylinder portion 12. It is equipped with 13. The outer frame 11 has an outer contour having substantially the same dimensions as the electric wire through hole 2. Flange portions 11a are provided on both ends of the exterior frame 11. Flange portions 11a on both ends are sandwiched between the panel body 1a and the cover 1b. As a result, the grommet 5 is fixed in the electric wire through hole 2.

外装フレーム１１の外周面には、３条のリブ１４（図４に示す）が設けられている。３条のリブ１４は、電線貫通孔２の貫通方向に等間隔に配置されている。外装フレーム１１の外面では、圧縮変形された各リブ１４が電線貫通孔２の内周面に密着している。これにより、外装フレーム１１の外周面と電線貫通孔２の内周面の間からの水等の浸入が防止されている。 Three ribs 14 (shown in FIG. 4) are provided on the outer peripheral surface of the exterior frame 11. The three ribs 14 are arranged at equal intervals in the penetrating direction of the electric wire through hole 2. On the outer surface of the outer frame 11, each of the compression-deformed ribs 14 is in close contact with the inner peripheral surface of the electric wire through hole 2. This prevents water and the like from entering between the outer peripheral surface of the exterior frame 11 and the inner peripheral surface of the electric wire through hole 2.

外装フレーム１１の上面側には、２つのクリップ孔１６が形成されている。 Two clip holes 16 are formed on the upper surface side of the exterior frame 11.

筒部１２は、その内周面の軸方向の等間隔位置にリブ１２ａ（図５に示す）が設けられている。各リブ１２ａは、筒部１２の周方向に沿って全周に亘って配置されている。筒部１２の内周面では、圧縮変形された各リブ１２ａが電線Ｗの外周面に密着している。これにより、筒部１２の内周面と電線Ｗの外周面の間からの水等の浸入が防止されている。 The tubular portion 12 is provided with ribs 12a (shown in FIG. 5) at equidistant positions on the inner peripheral surface thereof in the axial direction. Each rib 12a is arranged over the entire circumference along the circumferential direction of the tubular portion 12. On the inner peripheral surface of the tubular portion 12, each of the compression-deformed ribs 12a is in close contact with the outer peripheral surface of the electric wire W. As a result, water or the like is prevented from entering between the inner peripheral surface of the tubular portion 12 and the outer peripheral surface of the electric wire W.

筒部１２は、その一方端が遮蔽壁１３に支持されている。筒部１２の他方端（他方端）は、外装フレーム１１より被水領域３側に突出している。筒部１２は、片持ちで支持されている。 One end of the tubular portion 12 is supported by the shielding wall 13. The other end (the other end) of the tubular portion 12 projects from the exterior frame 11 toward the water-covered region 3. The tubular portion 12 is cantilevered and supported.

遮蔽壁１３は、外装フレーム１１と筒部１２の間より水等が通らないように遮蔽している。 The shielding wall 13 shields water and the like from between the exterior frame 11 and the tubular portion 12.

インナー部材２０は、グロメット本体１０より剛性の高い材料（例えば合成樹脂材）より形成されている。インナー部材２０は、グロメット本体１０の形態を保持、つまり、グロメット本体１０が外力によって内周面側に変形するのを規制する。 The inner member 20 is made of a material (for example, a synthetic resin material) having a higher rigidity than the grommet main body 10. The inner member 20 retains the form of the grommet main body 10, that is, regulates the grommet main body 10 from being deformed toward the inner peripheral surface side by an external force.

インナー部材２０は、外装フレーム１１の内周面のほぼ全域に亘って密着するインナーフレーム部２１と、遮蔽壁１３の内周面に沿って配置されるプレート部２２（図６に示す）とを有する。 The inner member 20 includes an inner frame portion 21 that is in close contact with the outer peripheral frame 11 over substantially the entire inner peripheral surface, and a plate portion 22 (shown in FIG. 6) that is arranged along the inner peripheral surface of the shielding wall 13. Have.

インナーフレーム部２１は、グロメット本体１０の外装フレーム１１より一回り小さい寸法に形成されている。インナーフレーム部２１は、上面枠２１ａと、上面枠２１ａの左右端に連結された左右の側面枠２１ｂと、左右の側面枠２１ｂの下端にそれぞれ連結され、互いに隙間ｄを介して配置された左右の下面枠２１ｃとを有する。上面枠２１ａには、２つのクリップ部２１ｄが設けられている。各クリップ部２１ｄは、グロメット本体１０のクリップ孔１６に嵌合されている。この嵌合によって、インナー部材２０は、グロメット本体１０に強固に固定されている。 The inner frame portion 21 is formed to be one size smaller than the outer frame 11 of the grommet main body 10. The inner frame portion 21 is connected to the upper surface frame 21a, the left and right side frame 21b connected to the left and right ends of the upper surface frame 21a, and the lower ends of the left and right side frame 21b, respectively, and is arranged on the left and right sides via a gap d. It has a lower surface frame 21c of. The upper surface frame 21a is provided with two clip portions 21d. Each clip portion 21d is fitted into a clip hole 16 of the grommet main body 10. By this fitting, the inner member 20 is firmly fixed to the grommet main body 10.

プレート部２２には、筒部貫通孔２３が形成されている。筒部貫通孔２３をグロメット本体１０の筒部１２が貫通している。 The plate portion 22 is formed with a tubular portion through hole 23. The tubular portion 12 of the grommet main body 10 penetrates the tubular portion through hole 23.

インナー部材２０には、インナー部材２０の外形寸法を可変できる寸法可変手段２５Ａが設けられている。寸法可変手段２５Ａは、図６のａ，ｂ矢印方向に撓み変形可能な一対の板バネ部２６によって形成されている。一対の板バネ部２６は、プレート部２２からスリット２７によって分離された左右の側面枠２１ｂと下面枠２１ｃによって形成されている。インナー部材２０は、一対の板バネ部２６が撓み変形していない状態（図６の状態）で縦方向Ｈの寸法が最も大きい。インナー部材２０は、一対の板バネ部２６が図６のａ矢印方向に撓み変形することにより縦方向Ｈの寸法が小さくなる。インナー部材２０は、撓み変形した一対の板バネ部２６が図６のｂ矢印方向に撓み復帰変形することにより、縦方向Ｈの寸法が大きくなる。 The inner member 20 is provided with a dimension-changing means 25A capable of varying the external dimensions of the inner member 20. The dimension-changing means 25A is formed by a pair of leaf spring portions 26 that can be bent and deformed in the directions of the arrows a and b in FIG. The pair of leaf spring portions 26 are formed by the left and right side frame 21b and the lower surface frame 21c separated from the plate portion 22 by the slit 27. The inner member 20 has the largest dimension in the vertical direction H in a state where the pair of leaf spring portions 26 are not bent and deformed (state in FIG. 6). The inner member 20 has a smaller dimension in the vertical direction H because the pair of leaf spring portions 26 are bent and deformed in the direction of the arrow a in FIG. The inner member 20 has a large dimension in the vertical direction H because the pair of leaf spring portions 26 that have been flexed and deformed are flexed and returned and deformed in the direction of the arrow b in FIG.

このように、寸法可変手段２５Ａは、一対の板バネ部２６が撓み変形することにより、インナー部材２０の縦方向Ｈの寸法を調整可能に形成されている。 As described above, the dimension-changing means 25A is formed so that the dimension of the inner member 20 in the vertical direction H can be adjusted by bending and deforming the pair of leaf spring portions 26.

次に、グロメット５の取付け作業を説明する。パネル本体１ａよりカバー１ｂを除去した電線貫通孔２内に、電線Ｗが装着されたグロメット５を配置する。次に、カバー１ｂをパネル本体１ａ上に被せる。 Next, the installation work of the grommet 5 will be described. The grommet 5 to which the electric wire W is mounted is arranged in the electric wire through hole 2 from which the cover 1b is removed from the panel main body 1a. Next, the cover 1b is put on the panel body 1a.

ここで、電線貫通孔２が適正な縦寸法に対しノミナル又は若干大きく（公差内）形成されている場合には、図７（ａ）に示す無負荷状態のリブ１４が、図７（ｂ）に示すように圧縮変形し、水密構造となる。そして、グロメット本体１０からカバー１ｂに作用する反発力は、リブ１４の適正量の圧縮変形によるものであり、所定範囲内に収まるため、カバー１ｂが浮き上がることがない（図１５参照）。 Here, when the wire through hole 2 is formed nominally or slightly larger (within the tolerance) with respect to the appropriate vertical dimension, the rib 14 in the no-load state shown in FIG. 7A is shown in FIG. 7B. As shown in, it is compressed and deformed to form a watertight structure. The repulsive force acting on the cover 1b from the grommet main body 10 is due to the compression deformation of the rib 14 by an appropriate amount and falls within a predetermined range, so that the cover 1b does not float (see FIG. 15).

ここで、電線貫通孔２が所定の縦寸法より小さく形成されていると、カバー１ｂをパネル本体１ａ上に単に載置した状態では、図１６（ａ）に示すように、パネル本体１ａよりカバー１ｂが大きく浮く。このカバー１ｂをパネル本体１ａ側に押し付けると、インナー部材２０の一対の板バネ部２６が図６のａ矢印方向に撓み変形する。この一対の板バネ部２６の撓み変形によってインナー部材２０の縦方向Ｈの寸法が小さくなると共に、図７（ａ）に示す無負荷状態のリブ１４が、図７（ｂ）に示すように圧縮変形し、水密構造となる。そして、グロメット本体１０からカバー１ｂに作用する反発力は、一対の板バネ部２６の撓み変形とリブ１４の適正量の圧縮変形によるものであり、所定範囲内に収まるため、カバー１ｂが浮き上がることがない。 Here, if the electric wire through hole 2 is formed to be smaller than a predetermined vertical dimension, the cover 1b is more covered than the panel body 1a as shown in FIG. 16A when the cover 1b is simply placed on the panel body 1a. 1b floats greatly. When the cover 1b is pressed against the panel body 1a, the pair of leaf spring portions 26 of the inner member 20 bend and deform in the direction of the arrow a in FIG. Due to the bending deformation of the pair of leaf spring portions 26, the dimension of the inner member 20 in the vertical direction H becomes smaller, and the rib 14 in the no-load state shown in FIG. 7A is compressed as shown in FIG. 7B. It deforms and becomes a watertight structure. The repulsive force acting on the cover 1b from the grommet body 10 is due to the bending deformation of the pair of leaf spring portions 26 and the compression deformation of the rib 14 by an appropriate amount, and the cover 1b floats because it falls within a predetermined range. There is no.

このように寸法可変手段２５Ａでインナー部材２０の外形寸法を可変できるため、グロメット５の寸法を予め大きく設定しておけば、電線貫通孔２が適正な縦寸法に対し公差以上に大きく形成されている場合にも、リブ１４が圧縮変形し、水密構造となる。 Since the external dimension of the inner member 20 can be changed by the dimension variable means 25A in this way, if the dimension of the grommet 5 is set large in advance, the electric wire through hole 2 is formed larger than the tolerance with respect to the appropriate vertical dimension. Even when the rib 14 is present, the rib 14 is compression-deformed to form a watertight structure.

以上説明したように、グロメット５は、車体パネル１の電線貫通孔２の内周面に密着し、内部を電線Ｗが貫通するグロメット本体１０と、グロメット本体１０の内周に配置され、グロメット本体１０より剛性が高いインナー部材２０と、インナー部材２０に設けられ、インナー部材２０の縦方向の外形寸法を可変できる寸法可変手段２５Ａとを備えている。 As described above, the grommet 5 is arranged on the inner circumference of the grommet main body 10 and the grommet main body 10 which are in close contact with the inner peripheral surface of the electric wire through hole 2 of the vehicle body panel 1 and the electric wire W penetrates inside, and the grommet main body. It includes an inner member 20 having a rigidity higher than that of 10, and a dimensional variable means 25A provided on the inner member 20 and capable of varying the external dimensions of the inner member 20 in the vertical direction.

従って、寸法可変手段２５Ａでインナー部材２０の縦方向Ｈの寸法を可変できるため、リブ１４で水密構造を達成できる範囲が広がる。従って、グロメット５の寸法に対し電線貫通孔２が大きい場合のみならず小さい場合にも、水密性を確保した状態でグロメット５を電線貫通孔２に極力適正に取り付けできる。このように、グロメット５の寸法に対し電線貫通孔２が大きい場合のみならず小さい場合にもグロメット５を極力適正に取り付けできるため、取付作業性が向上する。 Therefore, since the dimension-changing means 25A can change the dimension of the inner member 20 in the vertical direction H, the range in which the watertight structure can be achieved by the rib 14 is widened. Therefore, the grommet 5 can be attached to the wire through hole 2 as appropriately as possible while ensuring watertightness not only when the wire through hole 2 is large but also when the wire through hole 2 is small with respect to the dimension of the grommet 5. As described above, since the grommet 5 can be mounted as appropriately as possible not only when the wire through hole 2 is large with respect to the dimension of the grommet 5 but also when the wire through hole 2 is small, the mounting workability is improved.

寸法可変手段２５Ａである一対の板バネ部２６は、プレート部２２からスリット２７によって分離された左右の側面枠２１ｂと下面枠２１ｃによって形成されている。 The pair of leaf spring portions 26, which are the dimensional variable means 25A, are formed by the left and right side frame 21b and the lower surface frame 21c separated from the plate portion 22 by the slit 27.

従って、スリット２７を設ける等の簡単な設計変更によって、電線貫通孔２が所定の寸法より小さい場合に対応できるグロメット５を提供できる。 Therefore, it is possible to provide the grommet 5 that can handle the case where the electric wire through hole 2 is smaller than a predetermined dimension by a simple design change such as providing a slit 27.

より詳細には、寸法可変手段２５Ａは、互いに隙間ｄを開けて切り離して形成された一対の板バネ部２６より形成されている。そして、一対の板バネ部２６は、図６のａ矢印方向の撓み変形により、互いの隙間ｄを狭める方向に変形する。従って、一対の板バネ部２６の横方向Ｓの幅寸法も調整可能である。これにより、電線貫通孔２が所定の縦寸法より小さく、且つ、横寸法も小さく形成されている場合にも対応可能である。 More specifically, the dimensional variable means 25A is formed of a pair of leaf spring portions 26 formed by opening a gap d from each other and separating them. Then, the pair of leaf spring portions 26 are deformed in the direction of narrowing the gap d between them due to the bending deformation in the direction of the arrow a in FIG. Therefore, the width dimension of the pair of leaf spring portions 26 in the lateral direction S can also be adjusted. As a result, it is possible to cope with the case where the electric wire through hole 2 is formed to be smaller than a predetermined vertical dimension and also to have a smaller horizontal dimension.

（第２実施形態）
図８及び図９は本発明の第２実施形態を示す。この第２実施形態のグロメットは、前記第１実施形態にものと比較するに、インナー部材２０の構成が相違する。 (Second Embodiment)
8 and 9 show a second embodiment of the present invention. The grommet of the second embodiment has a different structure of the inner member 20 as compared with that of the first embodiment.

つまり、インナー部材２０は、図８に示すように、左右（横方向Ｓ）２つのインナー分割体３１，３２に分割されている。左右２つのインナー分割体３１，３２には、寸法可変手段２５Ｂが設けられている。 That is, as shown in FIG. 8, the inner member 20 is divided into two inner divided bodies 31 and 32 on the left and right (horizontal direction S). The two left and right inner split bodies 31 and 32 are provided with dimensional variable means 25B.

寸法可変手段２５Ｂは、互いのインナー分割体３１，３２を合体し、且つ、ロック位置が調整可能な上下２箇所のロック部３３である。各ロック部３３は、一方のインナー分割体３１に設けられた嵌合爪部３３ａと、他方のインナー分割体３２に設けられ、嵌合爪部３３ａが嵌合する嵌合溝部３３ｂとから形成されている。左右のインナー分割体３１，３２の合***置をロック部３３で調整可能に形成されている。 The dimensional variable means 25B is a lock portion 33 at two upper and lower positions where the inner split bodies 31 and 32 are united and the lock position can be adjusted. Each lock portion 33 is formed of a fitting claw portion 33a provided on one inner split body 31 and a fitting groove portion 33b provided on the other inner split body 32 and into which the fitting claw portion 33a fits. ing. The combined positions of the left and right inner divided bodies 31 and 32 are formed so as to be adjustable by the lock portion 33.

ロック部３３は、図９（ａ）の位置が最も嵌合深さが深く、インナー部材２０の横方向Ｓの寸法が最も小さい位置となる。ロック部３３は、図９（ｂ）の位置が最も嵌合深さが浅く、インナー部材２０の横方向Ｓの寸法が最も大きく位置となる。 The lock portion 33 has the deepest fitting depth at the position shown in FIG. 9A and the smallest dimension of the inner member 20 in the lateral direction S. The lock portion 33 has the shallowest fitting depth at the position shown in FIG. 9B, and the inner member 20 has the largest dimension in the lateral direction S.

電線貫通孔の構成及びグロメット本体の構成は、前記第１実施形態のものと同一である。又、インナー部材２０については、前記第１実施形態のものに同一、類似する構成箇所には、図面に同一符号を付して説明を省略する。 The configuration of the wire through hole and the configuration of the grommet main body are the same as those of the first embodiment. Further, with respect to the inner member 20, the same and similar components as those of the first embodiment are designated by the same reference numerals in the drawings, and the description thereof will be omitted.

電線貫通孔にグロメットを載置し、カバーをパネル本体上に単に載置した状態では、図１５に示すように、パネル本体よりカバーがわずかに浮く状態となるように、ロック部３３のロック位置を調整する。そして、カバーをパネル本体側に押し付けると、図７（ａ）に示す無負荷状態のリブが、図７（ｂ）に示すように圧縮変形し、水密構造となる。グロメット本体からカバーに作用する反発力は、リブの適正量の圧縮変形によるものであり、所定範囲内に収まるため、カバーが浮き上がることがない。 When the grommet is placed in the wire through hole and the cover is simply placed on the panel body, the lock position of the lock portion 33 is such that the cover is slightly lifted from the panel body as shown in FIG. To adjust. Then, when the cover is pressed against the panel body side, the ribs in the no-load state shown in FIG. 7A are compressed and deformed as shown in FIG. 7B to form a watertight structure. The repulsive force acting on the cover from the grommet body is due to the compression deformation of an appropriate amount of the ribs, and since it falls within a predetermined range, the cover does not lift up.

この第２実施形態のグロメットにおいても、寸法可変手段２５Ｂでインナー部材２０の外形寸法を可変できるため、リブで水密構造を達成できる範囲が広がる。従って、グロメットの寸法に対し電線貫通孔が大きい場合のみならず小さい場合にも、水密性を確保した状態でグロメットを電線貫通孔に極力適正に取り付けできる。このように、グロメットの寸法に対し電線貫通孔が大きい場合のみならず小さい場合にもグロメットを極力適正に取り付けできるため、取付作業性が向上する。 Also in the grommet of the second embodiment, since the external dimensions of the inner member 20 can be changed by the dimension changing means 25B, the range in which the watertight structure can be achieved by the ribs is widened. Therefore, the grommet can be attached to the wire through hole as appropriately as possible while ensuring watertightness not only when the wire through hole is large but also when the wire through hole is small with respect to the size of the grommet. As described above, since the grommet can be mounted as appropriately as possible not only when the wire through hole is large but also when the wire through hole is small with respect to the dimension of the grommet, the mounting workability is improved.

（第３実施形態）
図１０は本発明の第３実施形態を示す。この第３実施形態のグロメットは、前記第１実施形態にものと比較するに、インナー部材２０の構成が相違する。 (Third Embodiment)
FIG. 10 shows a third embodiment of the present invention. The grommet of the third embodiment has a different structure of the inner member 20 as compared with that of the first embodiment.

つまり、インナー部材２０は、図１０に示すように、第１実施形態と第２実施形態のものを合体した構成を有する。インナー部材２０は、左右２つのインナー分割体３１，３２である。そして、寸法可変手段２５Ｃは、左右２つのインナー分割体３１，３２に設けられた一対の板バネ部２６と、分割されたインナー分割体３１，３２を合体し、且つ、合体する位置（ロック位置）を可変可能なロック部３３とを有している。 That is, as shown in FIG. 10, the inner member 20 has a configuration in which the members of the first embodiment and the second embodiment are combined. The inner member 20 is two left and right inner divided bodies 31, 32. Then, the dimensional variable means 25C is a position (lock position) in which the pair of leaf spring portions 26 provided on the two left and right inner split bodies 31 and 32 and the split inner split bodies 31 and 32 are united and united. ) Is variable.

詳細には、寸法可変手段２５Ｃは、グロメット本体の内周面に密着するインナーフレーム部２１に形成され、撓み変形可能な一対の板バネ部２６であり、撓み変形によってインナー部材２０の縦方向Ｈの寸法を調整可能に形成されていると共に、インナー部材２０が２つのインナー分割体３１，３２に分割され、且つ、２つのインナー分割体３１，３２を合体するロック部３３のロック位置が可変可能に形成されることでインナー部材２０の横方向Ｓの寸法を調整可能に形成されている。 Specifically, the dimensional variable means 25C is a pair of leaf spring portions 26 formed on an inner frame portion 21 that is in close contact with the inner peripheral surface of the grommet body and can be flexed and deformed. The inner member 20 is divided into two inner divided bodies 31 and 32, and the lock position of the lock portion 33 that combines the two inner divided bodies 31 and 32 can be changed. The dimension of the inner member 20 in the lateral direction S can be adjusted by being formed in.

この第３実施形態のグロメットにおいても、寸法可変手段２５Ｃでインナー部材２０の外形寸法を可変できるため、リブで水密構造を達成できる範囲が広がる。従って、グロメットの寸法に対し電線貫通孔が大きい場合のみならず小さい場合にも、水密性を確保した状態でグロメットを電線貫通孔に極力適正に取り付けできる。このように、グロメットの寸法に対し電線貫通孔が大きい場合のみならず小さい場合にもグロメットを極力適正に取り付けできるため、取付作業性が向上する。 Also in the grommet of the third embodiment, since the external dimensions of the inner member 20 can be changed by the dimension changing means 25C, the range in which the watertight structure can be achieved by the ribs is widened. Therefore, the grommet can be attached to the wire through hole as appropriately as possible while ensuring watertightness not only when the wire through hole is large but also when the wire through hole is small with respect to the size of the grommet. As described above, since the grommet can be mounted as appropriately as possible not only when the wire through hole is large but also when the wire through hole is small with respect to the dimension of the grommet, the mounting workability is improved.

（変形例）
寸法可変手段２５Ａ，２５Ｂ，２５Ｃの構成は、インナー部材２０の外形寸法を可変できるものであれば良く、第１〜第３実施形態の構成に限定されるものではない。 (Modification example)
The configuration of the dimension-changing means 25A, 25B, 25C is not limited to the configuration of the first to third embodiments as long as the external dimensions of the inner member 20 can be changed.

１ 車体パネル
２ 電線貫通孔
５ グロメット
１０ グロメット本体
１４ リブ
２０ インナー部材
２１ インナーフレーム部
２５Ａ〜２５Ｃ 寸法可変手段
２６ 板バネ部（寸法可変手段）
３１，３２ インナー分割体（寸法可変手段）
３３ ロック部（寸法可変手段）
Ｗ 電線 1 Body panel 2 Wire through hole 5 Grommet 10 Grommet body 14 Rib 20 Inner member 21 Inner frame part 25A to 25C Dimensional variable means 26 Leaf spring part (Dimensional variable means)
31, 32 Inner split body (dimension variable means)
33 Lock part (dimension variable means)
W electric wire

Claims (3)

車体パネルの電線貫通孔の内周面に密着し、電線が内部を貫通するグロメット本体と、
前記グロメット本体の外周面に設けられ、前記電線貫通孔の内周面に密着するリブと、
前記グロメット本体の内周面側に配置され、前記グロメット本体より剛性の高いインナー部材と、
前記インナー部材に設けられ、前記インナー部材の外形寸法を可変できる寸法可変手段とを備え、
前記寸法可変手段は、前記インナー部材が２つのインナー分割体に分割され、且つ、２つの前記インナー分割体を合体するロック部のロック位置が可変可能に形成されることで前記インナー部材の横方向の寸法を調整可能に形成されたことを特徴とするグロメット。 The grommet body, which is in close contact with the inner peripheral surface of the wire through hole of the vehicle body panel and the wire penetrates inside,
Ribs provided on the outer peripheral surface of the grommet body and in close contact with the inner peripheral surface of the wire through hole,
An inner member arranged on the inner peripheral surface side of the grommet body and having higher rigidity than the grommet body,
A dimensional variable means provided on the inner member and capable of varying the external dimensions of the inner member is provided .
In the dimensional variable means, the inner member is divided into two inner divided bodies, and the lock position of the lock portion that combines the two inner divided bodies is variably formed so that the inner member is laterally oriented. The grommet is characterized by being formed so that the dimensions of the grommet can be adjusted. 請求項１記載のグロメットであって、
前記寸法可変手段は、前記グロメット本体の内周面に密着するインナーフレーム部に形成され、撓み変形可能な一対の板バネ部であり、撓み変形によって前記インナー部材の縦方向の寸法を調整可能に形成されたことを特徴とするグロメット。 The grommet according to claim 1.
The dimensional variable means is a pair of leaf spring portions that are formed on an inner frame portion that is in close contact with the inner peripheral surface of the grommet body and can be flexed and deformed, and the vertical dimensions of the inner member can be adjusted by the flexing deformation. A grommet characterized by being formed. 請求項１又は２に記載のグロメットを有するワイヤーハーネスであって、
複数の電線の束からなる電線集合体と、
前記電線集合体が内部を貫通するグロメット本体と、
２つのインナー分割体に分割され、横方向の寸法を調整可能に形成されたインナー部材と、
を備えたことを特徴とするワイヤーハーネス。 A wire harness having the grommet according to claim 1 or 2.
An electric wire assembly consisting of a bundle of multiple electric wires and
The grommet body through which the wire assembly penetrates,
An inner member that is divided into two inner parts and is formed so that the dimensions in the lateral direction can be adjusted.
A wire harness characterized by being equipped with.
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JP3233556B2 (en) * 1995-06-02 2001-11-26 日野自動車株式会社 Car body penetration structure of wire harness
JP2001069646A (en) * 1999-09-01 2001-03-16 Yazaki Corp Penetrating structure into vehicle body for wire harness
JP3629170B2 (en) * 1999-09-01 2005-03-16 矢崎総業株式会社 Wire harness body penetration structure
JP2002325341A (en) * 2001-04-27 2002-11-08 Yazaki Corp Harness grommet and attaching structure of the harness grommet
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