JP2021048744A - Grommet fixing structure - Google Patents

Grommet fixing structure Download PDF

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JP2021048744A
JP2021048744A JP2019171216A JP2019171216A JP2021048744A JP 2021048744 A JP2021048744 A JP 2021048744A JP 2019171216 A JP2019171216 A JP 2019171216A JP 2019171216 A JP2019171216 A JP 2019171216A JP 2021048744 A JP2021048744 A JP 2021048744A
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electric wire
wire insertion
tape winding
grommet
insertion portion
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平沢 均
Hitoshi Hirasawa
均 平沢
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Yazaki Corp
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Yazaki Corp
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Abstract

To provide a grommet fixing structure which enables improvement in holding force by a taping part, thereby maintaining waterproofness.SOLUTION: A grommet fixing structure 1 comprises: a grommet body fitted to a fitting member; a wire insertion part 7 which extends as one cylindrical member continuous with the grommet body, and into which a wire 5 is inserted in a close contact manner; and a taping part 11 in which an adhesive tape 9 is wound around an outer circumference of the wire insertion part 7 and an outer circumference of the wire 5 exposed from the wire insertion part 7. A protrusion 15 where the taping part 11 is disposed is provided to protrude at a position on the outer circumference spaced away from an end 13, of the wire insertion part 7, from which the wire 5 is exposed. An outer diameter of a portion between the end 13 and the protrusion 15 of the wire insertion part 7 is set to be smaller than that of the protrusion 15.SELECTED DRAWING: Figure 3

Description

本発明は、グロメット固定構造に関する。 The present invention relates to a grommet fixing structure.

従来、グロメット固定構造としては、取付部材としての車両パネルに取り付けられるグロメット本体としての車体係止部と、車体係止部と連続する一部材で筒状に延設され内部に電線が密着して挿通される電線挿通部としての小径筒部と、小径筒部の外周と小径筒部から露出する電線の外周にわたって粘着テープが巻回されたテープ巻部とを備えたものが知られている(特許文献1参照)。 Conventionally, as a grommet fixing structure, a vehicle body locking portion as a grommet main body attached to a vehicle panel as a mounting member and a member continuous with the vehicle body locking portion are extended in a tubular shape and the electric wires are in close contact with the inside. It is known that a small-diameter tube portion as an electric wire insertion portion to be inserted and a tape winding portion in which an adhesive tape is wound around the outer circumference of the small-diameter cylinder portion and the outer circumference of the electric wire exposed from the small-diameter cylinder portion ( See Patent Document 1).

このグロメット固定構造では、小径筒部の電線が露出する端部の外周に、テープ巻部が配置される凸部が突設されている。この凸部は、小径筒部に対するテープ巻部の位置ズレを防止している。 In this grommet fixing structure, a convex portion on which the tape winding portion is arranged is projected on the outer periphery of the end portion where the electric wire of the small diameter cylinder portion is exposed. This convex portion prevents the position of the tape winding portion from being displaced with respect to the small diameter cylinder portion.

特開2014−207736号公報Japanese Unexamined Patent Publication No. 2014-207736

しかしながら、上記特許文献1のようなグロメット固定構造では、電線挿通部の電線が露出する端部の外周に、凸部が突設されているので、この凸部に位置するテープ巻部と、電線の外周に位置するテープ巻部とでは、径方向に大きな隔たりができてしまう。 However, in the grommet fixing structure as in Patent Document 1, since a convex portion is projected on the outer periphery of the end where the electric wire of the electric wire insertion portion is exposed, the tape winding portion located at the convex portion and the electric wire There is a large radial gap from the tape winding portion located on the outer circumference of the cable.

このテープ巻部の径方向に隔たりが発生している部分では、粘着テープの粘着面が、凸部と電線の外周とで形成された空間に位置してしまい、粘着テープとしての固定機能を発揮することができない。 In the portion where the tape winding portion is separated in the radial direction, the adhesive surface of the adhesive tape is located in the space formed by the convex portion and the outer circumference of the electric wire, and exhibits the fixing function as the adhesive tape. Can not do it.

また、テープ巻部の非接着部分では、電線や電線挿通部の引っ張りなどによってテープ巻部に外力が加わった場合、テープ巻部に隙間が発生し、防水性が低下する可能性があった。 Further, in the non-adhesive portion of the tape winding portion, when an external force is applied to the tape winding portion due to pulling of an electric wire or an electric wire insertion portion, a gap may be generated in the tape winding portion and the waterproof property may be deteriorated.

本発明は、このような従来技術が有する課題に鑑みてなされたものである。そして本発明の目的は、テープ巻部による保持力を向上でき、防水性を保持することができるグロメット固定構造を提供することにある。 The present invention has been made in view of the problems of the prior art. An object of the present invention is to provide a grommet fixing structure capable of improving the holding force of the tape winding portion and maintaining waterproofness.

本実施形態に係るグロメット固定構造は、取付部材に取り付けられるグロメット本体と、前記グロメット本体と連続する一部材で筒状に延設され内部に電線が密着して挿通される電線挿通部と、前記電線挿通部の外周と前記電線挿通部から露出する前記電線の外周にわたって粘着テープが巻回されたテープ巻部とを備え、前記電線挿通部の前記電線が露出する端部から離間した外周には、前記テープ巻部が配置される凸部が突設され、前記電線挿通部の端部と前記凸部との間の外径は、前記凸部の外径より小さく設定されている。 The grommet fixing structure according to the present embodiment includes a grommet main body attached to a mounting member, an electric wire insertion portion extending in a tubular shape with one member continuous with the grommet main body, and an electric wire being inserted in close contact with the inside. A tape winding portion in which an adhesive tape is wound around the outer circumference of the electric wire insertion portion and the outer circumference of the electric wire exposed from the electric wire insertion portion is provided, and the outer circumference of the electric wire insertion portion separated from the exposed end of the electric wire is provided. A convex portion on which the tape winding portion is arranged is projected, and the outer diameter between the end portion of the electric wire insertion portion and the convex portion is set to be smaller than the outer diameter of the convex portion.

前記電線挿通部の端部と前記凸部との間の外周は、平坦に形成された平坦部となっていることが好ましい。 It is preferable that the outer periphery between the end portion of the electric wire insertion portion and the convex portion is a flat portion formed flat.

本発明によれば、テープ巻部による保持力を向上でき、防水性を保持することができるグロメット固定構造を提供することができる。 According to the present invention, it is possible to provide a grommet fixing structure capable of improving the holding force of the tape winding portion and maintaining waterproofness.

本実施形態に係るグロメットの一例を示す側面図である。It is a side view which shows an example of the grommet which concerns on this embodiment. 本実施形態に係るグロメットの他例を示す側面図である。It is a side view which shows the other example of the grommet which concerns on this embodiment. 本実施形態に係るグロメット固定構造の断面図である。It is sectional drawing of the grommet fixing structure which concerns on this embodiment. 凸部を電線挿通部の端部に設けたときの比較例を示す断面図である。It is sectional drawing which shows the comparative example when the convex part is provided at the end part of the electric wire insertion part.

以下、図面を用いて本実施形態に係るグロメット固定構造について詳細に説明する。なお、図面の寸法比率は説明の都合上誇張されており、実際の比率と異なる場合がある。 Hereinafter, the grommet fixing structure according to the present embodiment will be described in detail with reference to the drawings. The dimensional ratios in the drawings are exaggerated for convenience of explanation and may differ from the actual ratios.

本実施形態に係るグロメット固定構造1は、取付部材(不図示)に取り付けられるグロメット本体3と、グロメット本体3と連続する一部材で筒状に延設され内部に電線5が密着して挿通される電線挿通部7と、電線挿通部7の外周と電線挿通部7から露出する電線5の外周にわたって粘着テープ9が巻回されたテープ巻部11とを備えている。 The grommet fixing structure 1 according to the present embodiment is a grommet main body 3 attached to a mounting member (not shown) and a member continuous with the grommet main body 3 and is extended in a tubular shape, and an electric wire 5 is closely inserted inside. An electric wire insertion portion 7 and a tape winding portion 11 in which an adhesive tape 9 is wound around the outer periphery of the electric wire insertion portion 7 and the outer circumference of the electric wire 5 exposed from the electric wire insertion portion 7 are provided.

そして、電線挿通部7の電線5が露出する端部13から離間した外周には、テープ巻部11が配置される凸部15が突設され、電線挿通部7の端部13と凸部15との間の外径は、凸部15の外径より小さく設定されている。 Then, a convex portion 15 on which the tape winding portion 11 is arranged is projected from the outer periphery of the electric wire insertion portion 7 away from the exposed end portion 13, and the end portion 13 and the convex portion 15 of the electric wire insertion portion 7 are projected. The outer diameter between the two is set smaller than the outer diameter of the convex portion 15.

また、電線挿通部7の端部13と凸部15との間の外周は、平坦に形成された平坦部25となっている。なお、「平坦」とは、筒状の部材、筐体状の部材、或いは板状の部材などの表面において、意図的に凹凸などが設けられていない面を指すものとする。 Further, the outer circumference between the end portion 13 and the convex portion 15 of the electric wire insertion portion 7 is a flat portion 25 formed flat. The term "flat" refers to a surface of a tubular member, a housing-shaped member, a plate-shaped member, or the like that is not intentionally provided with irregularities or the like.

図1,図2に示すように、グロメットA,Bは、例えば、車室内と車室外とを区画する取付部材としてのパネル(不図示)に取り付けられる。このパネルには、グロメットA,Bを組み付けるための取付穴がパネルを貫通して設けられている。 As shown in FIGS. 1 and 2, the grommets A and B are attached to, for example, a panel (not shown) as an attachment member for partitioning the interior of the vehicle and the outside of the vehicle. The panel is provided with mounting holes for assembling the grommets A and B through the panel.

このパネルの取付穴には、例えば、車室内側に配置された機器と、車室外側に配置された電源や機器とを電気的に接続する電線5(図3参照)が挿通される。この電線5の外周にグロメットA,Bを密着させ、パネルの取付穴にグロメットA,Bを密着して取り付けることにより、車室内と車室外との間を防水することができる。 For example, an electric wire 5 (see FIG. 3) for electrically connecting a device arranged on the vehicle interior side and a power source or device arranged on the vehicle interior side is inserted into the mounting hole of this panel. By closely attaching the grommets A and B to the outer periphery of the electric wire 5 and closely attaching the grommets A and B to the mounting holes of the panel, it is possible to waterproof the space between the inside of the vehicle and the outside of the vehicle.

このグロメットA,Bは、電線5の配策形状に対応するために、形状が異なっている。詳細には、グロメットAは、電線5の配策形状が、パネルの取付穴からパネルの壁面に沿って配策される場合に用いられる。グロメットBは、電線5の配策形状が、パネルの取付穴をパネルの壁面と直交する方向に挿通して配策される場合に用いられる。 The grommets A and B have different shapes in order to correspond to the arrangement shape of the electric wire 5. Specifically, the grommet A is used when the arrangement shape of the electric wire 5 is arranged from the mounting hole of the panel along the wall surface of the panel. The grommet B is used when the arrangement shape of the electric wire 5 is arranged by inserting the mounting hole of the panel in the direction orthogonal to the wall surface of the panel.

このようなグロメットA,Bは、共にグロメット本体3と、電線挿通部7とを備えている。 Both of such grommets A and B include a grommet main body 3 and an electric wire insertion portion 7.

図1,図2に示すように、グロメット本体3は、合成ゴムなどの弾性部材からなり、環状に形成されている。このグロメット本体3の外周には、パネルの取付穴の縁部に係合する環状の係合溝17が設けられている。この係合溝17をパネルの取付穴に係合させることにより、グロメットA,Bがパネルに取り付けられる。 As shown in FIGS. 1 and 2, the grommet main body 3 is made of an elastic member such as synthetic rubber and is formed in an annular shape. An annular engaging groove 17 that engages with the edge of the mounting hole of the panel is provided on the outer periphery of the grommet main body 3. Grommets A and B are attached to the panel by engaging the engagement groove 17 with the mounting hole of the panel.

このようなグロメット本体3の外周には、係合溝17に隣接して弾性変形可能な環状の本体リップ部19が設けられている。この本体リップ部19は、係合溝17がパネルの取付穴に係合した状態で、取付穴の周囲のパネルの表面に密着される。このように本体リップ部19をパネルの表面に密着させることにより、パネルの取付穴を防水することができる。 On the outer circumference of such a grommet main body 3, an annular main body lip portion 19 that can be elastically deformed is provided adjacent to the engaging groove 17. The main body lip portion 19 is brought into close contact with the surface of the panel around the mounting hole in a state where the engaging groove 17 is engaged with the mounting hole of the panel. By bringing the main body lip portion 19 into close contact with the surface of the panel in this way, the mounting holes of the panel can be waterproofed.

このようなグロメット本体3の中央部には、複数の電線5が束ねられた電線束21(図3参照)が挿通される孔部(不図示)が設けられている。このグロメット本体3には、孔部と連通するように電線挿通部7が設けられている。 A hole (not shown) through which an electric wire bundle 21 (see FIG. 3) in which a plurality of electric wires 5 are bundled is inserted is provided in the central portion of such a grommet main body 3. The grommet main body 3 is provided with an electric wire insertion portion 7 so as to communicate with the hole portion.

図1〜図3に示すように、電線挿通部7は、グロメット本体3から電線束21の引出方向に向けてグロメット本体3と連続する一部材で筒状に延設されている。この電線挿通部7の内周には、電線束21が挿通され、内周面が電線束21の外周面に密着している。また、電線挿通部7の電線束21が露出する端部13の内周には、電線束21の外周に密着する環状の電線リップ部23が突設されている。 As shown in FIGS. 1 to 3, the electric wire insertion portion 7 is a member continuous with the grommet main body 3 from the grommet main body 3 toward the drawing direction of the electric wire bundle 21 and extends in a tubular shape. A wire bundle 21 is inserted through the inner circumference of the wire insertion portion 7, and the inner peripheral surface is in close contact with the outer peripheral surface of the wire bundle 21. Further, an annular electric wire lip portion 23 that is in close contact with the outer circumference of the electric wire bundle 21 is provided so as to project from the inner circumference of the end portion 13 where the electric wire bundle 21 of the electric wire insertion portion 7 is exposed.

このように電線挿通部7の端部13に電線リップ部23を設けることにより、電線束21の外周に沿って水などの液体が電線挿通部7の内部に侵入することを防止することができる。このような電線挿通部7の外周と、電線挿通部7から露出する電線束21の外周とには、テープ巻部11が設けられている。 By providing the electric wire lip portion 23 at the end portion 13 of the electric wire insertion portion 7 in this way, it is possible to prevent liquids such as water from entering the inside of the electric wire insertion portion 7 along the outer circumference of the electric wire bundle 21. .. A tape winding portion 11 is provided on the outer circumference of the electric wire insertion portion 7 and the outer circumference of the electric wire bundle 21 exposed from the electric wire insertion portion 7.

図3に示すように、テープ巻部11は、電線挿通部7の外周と電線挿通部7から露出する電線束21の外周にわたって粘着テープ9を巻回することによって設けられている。このテープ巻部11を設けることにより、電線挿通部7と電線束21とが固定され、電線束21に対する電線挿通部7の位置ズレが防止される。 As shown in FIG. 3, the tape winding portion 11 is provided by winding the adhesive tape 9 around the outer circumference of the electric wire insertion portion 7 and the outer circumference of the electric wire bundle 21 exposed from the electric wire insertion portion 7. By providing the tape winding portion 11, the electric wire insertion portion 7 and the electric wire bundle 21 are fixed, and the positional deviation of the electric wire insertion portion 7 with respect to the electric wire bundle 21 is prevented.

このようなテープ巻部11が位置する電線挿通部7の外周には、環状の凸部15が突設されている。この凸部15は、粘着テープ9が巻回されることによって、テープ巻部11に配置される。このような凸部15を設けることにより、電線挿通部7に対するテープ巻部11の位置ズレを防止することができる。 An annular convex portion 15 is projected from the outer periphery of the electric wire insertion portion 7 where the tape winding portion 11 is located. The convex portion 15 is arranged on the tape winding portion 11 by winding the adhesive tape 9. By providing such a convex portion 15, it is possible to prevent the tape winding portion 11 from being displaced with respect to the electric wire insertion portion 7.

ここで、図4に示すように、従来の電線挿通部7では、電線束21が露出する端部13の外周に凸部15aが突設されていた。このように凸部15aを設けてしまうと、凸部15aに位置するテープ巻部11と、電線束21の外周に位置するテープ巻部11とで、径方向に大きな隔たりができてしまっていた。詳細には、凸部15aでは、凸部15aに位置するテープ巻部11と、電線束21の外周に位置するテープ巻部11との間の高さH2が高くなってしまっていた。 Here, as shown in FIG. 4, in the conventional electric wire insertion portion 7, the convex portion 15a is projected from the outer periphery of the end portion 13 where the electric wire bundle 21 is exposed. When the convex portion 15a is provided in this way, a large radial gap is formed between the tape winding portion 11 located on the convex portion 15a and the tape winding portion 11 located on the outer periphery of the electric wire bundle 21. .. Specifically, in the convex portion 15a, the height H2 between the tape winding portion 11 located on the convex portion 15a and the tape winding portion 11 located on the outer periphery of the electric wire bundle 21 has become high.

このため、テープ巻部11の粘着テープ9の粘着面が接着しない非接着部分の長さL2が長くなってしまう。この非接着部分では、電線挿通部7と電線束21との位置を保持する保持力を発揮することができない。また、非接着部分では、電線束21や電線挿通部7の引っ張りなどによってテープ巻部11に外力が加わった場合、テープ巻部11に隙間が発生し、防水性が低下してしまう。さらに、テープ巻部11の隙間に加えて、撚れが発生し、外観が悪化することもある。 Therefore, the length L2 of the non-adhesive portion where the adhesive surface of the adhesive tape 9 of the tape winding portion 11 does not adhere becomes long. In this non-adhesive portion, the holding force for holding the positions of the electric wire insertion portion 7 and the electric wire bundle 21 cannot be exhibited. Further, in the non-adhesive portion, when an external force is applied to the tape winding portion 11 due to pulling of the electric wire bundle 21 or the electric wire insertion portion 7, a gap is generated in the tape winding portion 11 and the waterproof property is deteriorated. Further, in addition to the gap of the tape winding portion 11, twisting may occur and the appearance may be deteriorated.

そこで、図3に示すように、凸部15は、電線挿通部7の電線束21が露出する端部13から離間した外周に突設されている。また、電線挿通部7の端部13と凸部15との間の外径は、凸部15の外径より小さく設定されている。このように凸部15を設け、電線挿通部7の端部13と凸部15との間の外径を設定することにより、端部13の外周に位置するテープ巻部11と、電線束21の外周に位置するテープ巻部11との径方向の隔たりを小さくすることができる。詳細には、この凸部15では、端部13の外周に位置するテープ巻部11と、電線束21の外周に位置するテープ巻部11との間の高さH1を高さH2(図4参照)より低くすることができる。 Therefore, as shown in FIG. 3, the convex portion 15 is projected from the outer periphery away from the end portion 13 where the electric wire bundle 21 of the electric wire insertion portion 7 is exposed. Further, the outer diameter between the end portion 13 of the electric wire insertion portion 7 and the convex portion 15 is set to be smaller than the outer diameter of the convex portion 15. By providing the convex portion 15 in this way and setting the outer diameter between the end portion 13 and the convex portion 15 of the electric wire insertion portion 7, the tape winding portion 11 located on the outer periphery of the end portion 13 and the electric wire bundle 21 The radial distance from the tape winding portion 11 located on the outer periphery of the cable can be reduced. Specifically, in the convex portion 15, the height H1 between the tape winding portion 11 located on the outer periphery of the end portion 13 and the tape winding portion 11 located on the outer periphery of the wire bundle 21 is set to the height H2 (FIG. 4). See) Can be lower.

このため、テープ巻部11の粘着テープ9の粘着面が接着しない非接着部分の長さL1を、非接着部分の長さL2(図4参照)より短くすることができる。このように非接着部分を短くすることで、テープ巻部11における接着部分を稼ぐことができ、電線挿通部7と電線束21との位置を保持する保持力を向上することができる。また、電線束21や電線挿通部7の引っ張りなどによってテープ巻部11に外力が加わった場合であっても、テープ巻部11での隙間の発生を抑制し、防水性を保持することができる。さらに、テープ巻部11での隙間の発生の抑制に加えて、撚れの発生も抑制でき、外観を保持することができる。 Therefore, the length L1 of the non-adhesive portion where the adhesive surface of the adhesive tape 9 of the tape winding portion 11 does not adhere can be made shorter than the length L2 of the non-adhesive portion (see FIG. 4). By shortening the non-adhesive portion in this way, the adhesive portion in the tape winding portion 11 can be gained, and the holding force for holding the positions of the electric wire insertion portion 7 and the electric wire bundle 21 can be improved. Further, even when an external force is applied to the tape winding portion 11 due to pulling of the electric wire bundle 21 or the electric wire insertion portion 7, it is possible to suppress the occurrence of a gap in the tape winding portion 11 and maintain the waterproof property. .. Further, in addition to suppressing the occurrence of gaps in the tape winding portion 11, the occurrence of twisting can also be suppressed, and the appearance can be maintained.

ここで、図4に示すように、電線挿通部7の端部13の外周に凸部15aを設けてしまうと、凸部15aからグロメット本体3(図1,図2参照)側に位置するテープ巻部11の非接着部分の長さL4が長くなってしまう。このため、テープ巻部11は、十分な保持力をさらに発揮することができない。 Here, as shown in FIG. 4, if the convex portion 15a is provided on the outer periphery of the end portion 13 of the electric wire insertion portion 7, the tape located on the grommet main body 3 (see FIGS. 1 and 2) side from the convex portion 15a. The length L4 of the non-adhesive portion of the winding portion 11 becomes long. Therefore, the tape winding portion 11 cannot further exert a sufficient holding force.

これに対して、図3に示すように、電線挿通部7の端部13と凸部15との間の外径は、凸部15の外径より小さく設定されている。詳細には、電線挿通部7の端部13と凸部15との間の外周は、平坦に形成された平坦部25となっている。この平坦部25には、粘着テープ9の粘着面が接着し、テープ巻部11が配置されている。 On the other hand, as shown in FIG. 3, the outer diameter between the end portion 13 and the convex portion 15 of the electric wire insertion portion 7 is set to be smaller than the outer diameter of the convex portion 15. Specifically, the outer circumference between the end portion 13 and the convex portion 15 of the electric wire insertion portion 7 is a flat portion 25 formed flat. The adhesive surface of the adhesive tape 9 is adhered to the flat portion 25, and the tape winding portion 11 is arranged.

このため、電線挿通部7の端部13から凸部15までの長さL3の範囲を、テープ巻部11の接着部分とすることができ、テープ巻部11における接着部分を大幅に稼ぐことができる。このように平坦部25にテープ巻部11を配置することにより、テープ巻部11の電線挿通部7と電線束21との位置を保持する保持力をさらに向上することができる。 Therefore, the range of the length L3 from the end 13 to the convex portion 15 of the electric wire insertion portion 7 can be set as the adhesive portion of the tape winding portion 11, and the adhesive portion in the tape winding portion 11 can be significantly increased. it can. By arranging the tape winding portion 11 on the flat portion 25 in this way, the holding force for holding the positions of the electric wire insertion portion 7 and the electric wire bundle 21 of the tape winding portion 11 can be further improved.

なお、端部13から凸部15までの平坦部25の長さL3は、凸部15を設ける位置によって変更可能であり、粘着テープ9の粘着面が平坦部25に十分に接着できる長さがあることが好ましい。 The length L3 of the flat portion 25 from the end portion 13 to the convex portion 15 can be changed depending on the position where the convex portion 15 is provided, and the length at which the adhesive surface of the adhesive tape 9 can be sufficiently adhered to the flat portion 25 is sufficient. It is preferable to have.

また、電線挿通部7の端部13と凸部15との間の外径は、凸部15の外径より小さく設定されていればよく、例えば、電線挿通部7の端部13と凸部15との間の外周に複数の溝部などを設けてもよい。加えて、凸部15の頂部から端部13側とグロメット本体3側とに向けて緩やかな下り傾斜となる傾斜面を設け、この傾斜面を平坦部25としてもよい。 Further, the outer diameter between the end portion 13 and the convex portion 15 of the electric wire insertion portion 7 may be set smaller than the outer diameter of the convex portion 15, for example, the end portion 13 and the convex portion of the electric wire insertion portion 7. A plurality of grooves or the like may be provided on the outer periphery between the 15 and the 15th. In addition, an inclined surface having a gentle downward inclination from the top of the convex portion 15 toward the end portion 13 side and the grommet main body 3 side may be provided, and this inclined surface may be used as the flat portion 25.

このようなグロメット固定構造1では、電線挿通部7の電線5が露出する端部13から離間した外周に、テープ巻部11が配置される凸部15が突設され、電線挿通部7の端部13と凸部15との間の外径が、凸部15の外径より小さく設定されている。このため、電線挿通部7の電線5が露出する端部13の外周に位置するテープ巻部11と、電線5の外周に位置するテープ巻部11との径方向の隔たりを小さく抑えることができる。 In such a grommet fixing structure 1, a convex portion 15 on which the tape winding portion 11 is arranged is projected from the outer periphery of the wire insertion portion 7 away from the exposed end portion 13 of the electric wire 5, and the end of the electric wire insertion portion 7 is provided. The outer diameter between the portion 13 and the convex portion 15 is set to be smaller than the outer diameter of the convex portion 15. Therefore, the radial distance between the tape winding portion 11 located on the outer periphery of the end portion 13 where the electric wire 5 of the electric wire insertion portion 7 is exposed and the tape winding portion 11 located on the outer periphery of the electric wire 5 can be suppressed to be small. ..

このため、電線挿通部7の端部13の外周と電線5の外周とにわたって配置されたテープ巻部11における粘着テープ9の粘着面が非接着となる部分を少なくすることができ、テープ巻部11による保持力を向上することができる。 Therefore, it is possible to reduce the portion of the tape winding portion 11 arranged over the outer circumference of the end portion 13 of the electric wire insertion portion 7 and the outer circumference of the electric wire 5 where the adhesive surface of the adhesive tape 9 is not adhered. The holding power of 11 can be improved.

また、テープ巻部11の非接着部分を少なくすることができるので、テープ巻部11にかかる外力に対する耐力を向上することができ、テープ巻部11における隙間の発生を抑制し、防水性を保持することができる。 Further, since the non-adhesive portion of the tape winding portion 11 can be reduced, the proof stress against an external force applied to the tape winding portion 11 can be improved, the generation of a gap in the tape winding portion 11 is suppressed, and the waterproof property is maintained. can do.

従って、このようなグロメット固定構造1では、テープ巻部11による保持力を向上でき、防水性を保持することができる。 Therefore, in such a grommet fixing structure 1, the holding force by the tape winding portion 11 can be improved, and the waterproof property can be maintained.

また、電線挿通部7の端部13と凸部15との間の外周は、平坦に形成された平坦部25となっているので、テープ巻部11における接着部分を大幅に稼ぐことができる。このため、テープ巻部11の電線挿通部7と電線5との位置を保持する保持力をさらに向上することができる。 Further, since the outer periphery between the end portion 13 and the convex portion 15 of the electric wire insertion portion 7 is a flat portion 25 formed flat, it is possible to significantly increase the adhesive portion in the tape winding portion 11. Therefore, the holding force for holding the positions of the electric wire insertion portion 7 and the electric wire 5 of the tape winding portion 11 can be further improved.

以上、本実施形態を説明したが、本実施形態はこれらに限定されるものではなく、本実施形態の要旨の範囲内で種々の変形が可能である。 Although the present embodiment has been described above, the present embodiment is not limited to these, and various modifications can be made within the scope of the gist of the present embodiment.

また、凸部は、電線挿通部の外周に周方向に連続して環状に形成されているが、これに限らず、電線挿通部の外周に周方向に不連続に複数の凸部を設けてもよい。 Further, the convex portion is formed in a ring shape continuously in the circumferential direction on the outer periphery of the electric wire insertion portion, but the present invention is not limited to this, and a plurality of convex portions are provided discontinuously in the circumferential direction on the outer periphery of the electric wire insertion portion. May be good.

さらに、電線リップ部は、電線挿通部の端部に設けられているが、これに限らず、電線挿通部のどの位置に設けてもよい。また、電線リップ部は、1箇所に限らず、複数個所に設けてもよい。 Further, the electric wire lip portion is provided at the end of the electric wire insertion portion, but the present invention is not limited to this, and the electric wire lip portion may be provided at any position of the electric wire insertion portion. Further, the electric wire lip portion is not limited to one location, and may be provided at a plurality of locations.

1 グロメット固定構造
3 グロメット本体
5 電線
7 電線挿通部
9 粘着テープ
11 テープ巻部
13 端部
15 凸部
25 平坦部
1 Grommet fixing structure 3 Grommet body 5 Electric wire 7 Electric wire insertion part 9 Adhesive tape 11 Tape winding part 13 End part 15 Convex part 25 Flat part

Claims (2)

取付部材に取り付けられるグロメット本体と、
前記グロメット本体と連続する一部材で筒状に延設され内部に電線が密着して挿通される電線挿通部と、
前記電線挿通部の外周と前記電線挿通部から露出する前記電線の外周にわたって粘着テープが巻回されたテープ巻部と、を備え、
前記電線挿通部の前記電線が露出する端部から離間した外周には、前記テープ巻部が配置される凸部が突設され、
前記電線挿通部の端部と前記凸部との間の外径は、前記凸部の外径より小さく設定されている、グロメット固定構造。
The grommet body that can be attached to the mounting member and
An electric wire insertion part that extends in a tubular shape with one member continuous with the grommet body and the electric wire is inserted in close contact with the inside.
A tape winding portion in which an adhesive tape is wound around the outer circumference of the electric wire insertion portion and the outer circumference of the electric wire exposed from the electric wire insertion portion is provided.
A convex portion on which the tape winding portion is arranged is projected from the outer periphery of the electric wire insertion portion away from the exposed end of the electric wire.
A grommet fixing structure in which the outer diameter between the end portion of the electric wire insertion portion and the convex portion is set smaller than the outer diameter of the convex portion.
前記電線挿通部の端部と前記凸部との間の外周は、平坦に形成された平坦部となっている、請求項1に記載のグロメット固定構造。 The grommet fixing structure according to claim 1, wherein the outer periphery between the end portion of the electric wire insertion portion and the convex portion is a flat portion formed flat.
JP2019171216A 2019-09-20 2019-09-20 Grommet fixing structure Abandoned JP2021048744A (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012019566A (en) * 2010-07-06 2012-01-26 Yazaki Corp Electric connection box
JP2012175718A (en) * 2011-02-17 2012-09-10 Sumitomo Wiring Syst Ltd Grommet
JP2017010638A (en) * 2015-06-17 2017-01-12 住友電装株式会社 Grommet and wire harness with grommet

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012019566A (en) * 2010-07-06 2012-01-26 Yazaki Corp Electric connection box
JP2012175718A (en) * 2011-02-17 2012-09-10 Sumitomo Wiring Syst Ltd Grommet
JP2017010638A (en) * 2015-06-17 2017-01-12 住友電装株式会社 Grommet and wire harness with grommet

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