JP2014220928A - Grommet - Google Patents

Grommet Download PDF

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Publication number
JP2014220928A
JP2014220928A JP2013099036A JP2013099036A JP2014220928A JP 2014220928 A JP2014220928 A JP 2014220928A JP 2013099036 A JP2013099036 A JP 2013099036A JP 2013099036 A JP2013099036 A JP 2013099036A JP 2014220928 A JP2014220928 A JP 2014220928A
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Japan
Prior art keywords
grommet
tube portion
plate rib
panel
bellows
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JP2013099036A
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JP6080205B2 (en
Inventor
宮腰　浩司
Koji Miyakoshi
浩司 宮腰
博之 澁谷
Hiroyuki Shibuya
博之 澁谷
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Subaru Corp
Yazaki Corp
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Yazaki Corp
Fuji Heavy Industries Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L5/00—Devices for use where pipes, cables or protective tubing pass through walls or partitions
    • F16L5/02—Sealing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B17/00—Insulators or insulating bodies characterised by their form
    • H01B17/56—Insulating bodies
    • H01B17/58—Tubes, sleeves, beads, or bobbins through which the conductor passes
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
    • H02G3/22—Installations of cables or lines through walls, floors or ceilings, e.g. into buildings

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  • Engineering & Computer Science (AREA)
  • Insulating Bodies (AREA)
  • Installation Of Indoor Wiring (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a grommet that is able to ensure an angle and a direction by hindering unnecessary deformation and is able to prevent decrease in workability and wiring by hindering unnecessary deformation.SOLUTION: A grommet 1 is made from rubber or elastomer and comprises: a panel fitting part 5 that fits on a vehicle panel so as to be watertight; an outer cylindrical part 6 having a bent cylindrical part 9 and a bellows cylindrical part 10; and a wall-like plate rib 7. The plate rib 7 is formed so as to extend from the outer cylindrical part 6 toward the panel fitting part 5, be integrated with the panel fitting part 5, and have a thin wall part 16. The grommet 1 has a thin wall part 16 in its plate rib 7, thereby making it possible to allow bend if necessary while hindering unnecessary deformation of the outer cylindrical part 6.

Description

本発明は、パネル嵌合部と外装筒部とを有するグロメットに関する。   The present invention relates to a grommet having a panel fitting part and an exterior cylinder part.

例えば、車両パネルに形成された貫通穴にワイヤハーネスを挿通する際、貫通穴とワイヤハーネスとの接触を防止し、さらには、車両パネル内への水分の浸入を防止するためにグロメットが用いられる（例えば下記特許文献１参照）。以下、従来のグロメットの構成及び構造について説明をする。   For example, when inserting a wire harness into a through hole formed in a vehicle panel, a grommet is used to prevent contact between the through hole and the wire harness, and further to prevent moisture from entering the vehicle panel. (For example, refer to Patent Document 1 below). Hereinafter, the configuration and structure of a conventional grommet will be described.

図６において、グロメットは一物体のものと、二物体のものが知られる。先ず、図６（ａ）に示す如くの一物体のグロメット１０１について説明をすると、グロメット１０１は、ゴムの成形品であって、一端が自動車の車両パネル１０２に取り付けられ、他端は開閉動をする図示しないリアドアに取り付けられる。グロメット１０１は、車両パネル１０２とリアドアとに跨って配索されるワイヤハーネス１０３を外装するために設けられる。グロメット１０１は、パネル嵌合部１０４と、このパネル嵌合部１０４に連続する外装筒部１０５とを有する。   In FIG. 6, one grommet and one grommet are known. First, the grommet 101 of one object as shown in FIG. 6A will be described. The grommet 101 is a molded product of rubber, and one end is attached to the vehicle panel 102 of the automobile, and the other end opens and closes. It is attached to a rear door (not shown). The grommet 101 is provided to cover the wire harness 103 routed across the vehicle panel 102 and the rear door. The grommet 101 includes a panel fitting portion 104 and an exterior cylinder portion 105 continuous with the panel fitting portion 104.

パネル嵌合部１０４は、車両パネル１０２に対し水密に嵌合する部分として形成される。一方、外装筒部１０５は、ワイヤハーネス１０３を覆って外装する部分として形成される。このような外装筒部１０５には、パネル嵌合部１０４に対し図示の如く屈曲状態で連続する屈曲筒部１０６が形成される。また、この屈曲筒部１０６に連続するように蛇腹筒部１０７も形成される。   The panel fitting portion 104 is formed as a portion that fits the vehicle panel 102 in a watertight manner. On the other hand, the exterior cylinder part 105 is formed as a part which covers and covers the wire harness 103. In such an outer tube portion 105, a bent tube portion 106 that is continuous with the panel fitting portion 104 in a bent state as illustrated is formed. A bellows tube portion 107 is also formed so as to be continuous with the bent tube portion 106.

下記特許文献１の開示技術によれば、屈曲筒部１０６の外面には、リブ１０８が複数形成される。このリブ１０８は、蛇腹筒部１０７との境界部分近傍に配置形成される。また、リブ１０８は、円環形状に突出するように形成される。   According to the technology disclosed in Patent Document 1 below, a plurality of ribs 108 are formed on the outer surface of the bent tube portion 106. The rib 108 is disposed and formed in the vicinity of the boundary portion with the bellows tube portion 107. The rib 108 is formed so as to protrude in an annular shape.

次に、図６（ｂ）に示す如くの二物体のグロメット１２１は、樹脂製のインナー部材１２２と、このインナー部材１２２の外側に取り付けられるゴム製のアウター部材１２３とを備えて構成される。インナー部材１２２は、自動車の車両パネル１２４に係止される係止部１２５を有し、アウター部材１２３のパネル嵌合部１２６の内側に取り付けられる。アウター部材１２３は、上記パネル嵌合部１２６と、このパネル嵌合部１２６に連続する外装筒部１２７とを有する。   Next, a two-object grommet 121 as shown in FIG. 6B includes a resin inner member 122 and a rubber outer member 123 attached to the outside of the inner member 122. The inner member 122 has a locking portion 125 that is locked to the vehicle panel 124 of the automobile, and is attached to the inside of the panel fitting portion 126 of the outer member 123. The outer member 123 includes the panel fitting portion 126 and an exterior cylinder portion 127 that is continuous with the panel fitting portion 126.

外装筒部１２７には、パネル嵌合部１２６に対し図示の如く屈曲状態で連続する屈曲筒部１２８と、この屈曲筒部１２８に連続する蛇腹筒部１２９とが形成される。   The exterior cylinder part 127 is formed with a bent cylinder part 128 that continues in a bent state with respect to the panel fitting part 126 as shown in the figure, and a bellows cylinder part 129 that continues to the bent cylinder part 128.

下記特許文献１の開示技術によれば、屈曲筒部１２８の内面には、リブ１３０が複数形成される。このリブ１３０は、円環形状の部分と、管軸に沿ってのびる部分とから構成される。円環形状の部分は、蛇腹筒部１２９との境界部分近傍、パネル嵌合部１２６との境界部分近傍、及びこれらの中間部分に配置形成される。   According to the technology disclosed in Patent Document 1 below, a plurality of ribs 130 are formed on the inner surface of the bent tube portion 128. The rib 130 includes a ring-shaped portion and a portion extending along the tube axis. The annular portion is arranged and formed in the vicinity of the boundary portion with the bellows tube portion 129, in the vicinity of the boundary portion with the panel fitting portion 126, and in the middle portion thereof.

尚、下記特許文献１には、管軸に沿ってのびる一本のリブを蛇腹筒部に付加する例も開示される。   Patent Document 1 below also discloses an example in which a single rib extending along the tube axis is added to the bellows tube portion.

特開２０１１−２１１８０９号公報JP 2011- 211809 A

上記従来のグロメット１０１、１２１にあっては、屈曲筒部１０６、１２８に複数のリブ１０８、１３０が形成される。これは、自動車のリアドアが開閉動をする際、屈曲筒部１０６、１２８に座屈を生じさせないようにするためである。   In the conventional grommets 101 and 121, a plurality of ribs 108 and 130 are formed in the bent tube portions 106 and 128. This is to prevent buckling of the bent tubular portions 106 and 128 when the rear door of the automobile opens and closes.

しかしながら、このようにリブ１０８、１３０を複数形成して座屈を防止したとしても、ワイヤハーネス１０３の車両配索時にパネル嵌合部１０４、１２６を車両パネル１０２、１２４に嵌合させる作業を行うと、グロメット１０１、１２１には引っ張る等の外力が掛かることから、屈曲筒部１０６、１２８に変形（倒れ、傾き）が生じてしまうという虞がある。仮に変形が生じた場合には、成形時の角度を維持することができなくなることから、グロメット１０１、１２１はリアドアに挟み込まれてしまうという問題点を有する。   However, even if the plurality of ribs 108 and 130 are formed in this manner to prevent buckling, the operation of fitting the panel fitting portions 104 and 126 to the vehicle panels 102 and 124 is performed when the wire harness 103 is routed in the vehicle. Then, since an external force such as pulling is applied to the grommets 101 and 121, there is a possibility that the bent tube portions 106 and 128 may be deformed (fallen or tilted). If deformation occurs, the angle during molding cannot be maintained, so that the grommets 101 and 121 are sandwiched between the rear doors.

この他、変形が起こり易いのであれば、車両パネル１０２、１２４の貫通穴を介し室内側から室外側へと引き込み作業を行う際に、屈曲筒部１０６、１２８等が貫通穴に干渉してしまうことから、作業性及び配索性が低下してしまうという問題点も有する。   In addition, if the deformation is likely to occur, the bent tube portions 106, 128, etc. will interfere with the through-holes when pulling from the indoor side to the outdoor side through the through-holes of the vehicle panels 102, 124. For this reason, there is also a problem that workability and routing are deteriorated.

本発明は、上記した事情に鑑みてなされたもので、不必要な変形を抑えて角度や方向を確保することが可能な、また、不必要な変形を抑えて作業性及び配索性の低下防止を図ることが可能なグロメットを提供することを課題とする。   The present invention has been made in view of the above-described circumstances, and can prevent an unnecessary deformation and ensure an angle and a direction. Also, the unnecessary deformation can be suppressed and workability and routing can be prevented from being deteriorated. It is an object to provide a grommet capable of achieving the above.

上記課題を解決するためになされた請求項１に記載の本発明は、車両パネルに対し水密に嵌合するパネル嵌合部と、前記車両パネルを貫通するワイヤハーネスを覆う外装筒部とを有するグロメットにおいて、前記外装筒部は、前記パネル嵌合部に対し屈曲状態で連続する屈曲筒部と、該屈曲筒部に連続する蛇腹筒部とを有し、該蛇腹筒部には、前記パネル嵌合部に向けてのび且つ該パネル嵌合部に一体化する壁状の板リブを設け、該板リブには、薄肉部を形成することを特徴とする。   The present invention according to claim 1, which has been made to solve the above-described problems, includes a panel fitting portion that fits water tightly with respect to a vehicle panel, and an exterior tube portion that covers a wire harness that penetrates the vehicle panel. In the grommet, the exterior tube portion includes a bent tube portion that is continuous with the panel fitting portion in a bent state, and a bellows tube portion that is continuous with the bend tube portion, and the bellows tube portion includes the panel. A wall-like plate rib extending toward the fitting portion and integrated with the panel fitting portion is provided, and a thin portion is formed on the plate rib.

このような特徴を有する本発明によれば、車両パネルに対しパネル嵌合部を水密に嵌合させると、パネル嵌合部は嵌合により動かない状態になる。また、動かない状態のパネル嵌合部に対し外装筒部は壁状の板リブにて接続される。従って、本発明によれば、外装筒部は板リブにて支えられた状態になることから、例えば外装筒部に外力が加わったとしても不必要な変形を抑えることができる。外装筒部の不必要な変形を抑えることができれば、外装筒部の角度や方向を確保することができ、干渉するといった不具合も防止することができる。また、リアドアがある部分に本発明のグロメットが取り付けられるのであれば、挟まれるといった不具合も防止することができる。   According to the present invention having such a feature, when the panel fitting portion is watertightly fitted to the vehicle panel, the panel fitting portion is not moved by the fitting. Moreover, the exterior cylinder part is connected to the panel fitting part in a non-moving state by wall-shaped plate ribs. Therefore, according to the present invention, since the exterior cylinder portion is supported by the plate rib, unnecessary deformation can be suppressed even if an external force is applied to the exterior cylinder portion, for example. If unnecessary deformation of the outer tube portion can be suppressed, the angle and direction of the outer tube portion can be secured, and problems such as interference can be prevented. Moreover, if the grommet of this invention is attached to the part with a rear door, the malfunction of being pinched can also be prevented.

また、本発明によれば、蛇腹筒部に板リブを設けることから、屈曲筒部での応力集中や、屈曲筒部とパネル嵌合部との連続部分での応力集中を抑制することができ、以て耐久性を向上させることができる。さらに、本発明によれば、板リブに薄肉部を形成することから、単なる壁状の板リブではなく、外装筒部の不必要な変形を抑えつつも必要に応じて折れ曲がりを許容する板リブにすることができる。従って、このような形状の配慮もあることから、作業性及び配索性の低下を防止することができる。この他、本発明によれば、壁状の板リブであることから、複雑な形状でなく、成形性を良好にすることもできる。   Further, according to the present invention, since the plate rib is provided in the bellows tube portion, the stress concentration in the bent tube portion and the stress concentration in the continuous portion between the bent tube portion and the panel fitting portion can be suppressed. Thus, durability can be improved. Furthermore, according to the present invention, since the thin portion is formed in the plate rib, the plate rib is not a simple wall-shaped plate rib but allows bending as needed while suppressing unnecessary deformation of the exterior tube portion. Can be. Therefore, since there is consideration of such a shape, it is possible to prevent deterioration in workability and routing. In addition, according to the present invention, since it is a wall-shaped plate rib, it is possible to improve not only a complicated shape but also moldability.

請求項２に記載の本発明は、請求項１に記載のグロメットにおいて、前記板リブは、前記蛇腹筒部に形成される複数の山部及び谷部のうち一部に一体化することを特徴とする。   According to a second aspect of the present invention, in the grommet according to the first aspect, the plate rib is integrated with a part of a plurality of peak portions and valley portions formed in the bellows cylinder portion. And

このような特徴を有する本発明によれば、蛇腹状筒部に形成される複数の山部及び谷部のうち一部に壁状の板リブを一体化させることから、蛇腹筒部の機能を確保しつつ外装筒部の不必要な変形を抑えることができる。また、本発明によれば、板リブを上記一部に一体化させることから、この一体化部分の反対側に位置する山部及び谷部に伸縮性（若しくは伸長性）を持たせることができる。伸縮性（伸長性）を持たせることができれば、この部分を応力吸収部分として機能させることもできる。   According to the present invention having such a feature, the wall-like plate rib is integrated into a part of the plurality of crests and troughs formed in the bellows-like cylinder part, so that the function of the bellows cylinder part is achieved. Unnecessary deformation of the exterior cylinder portion can be suppressed while ensuring. Further, according to the present invention, since the plate rib is integrated with the part, it is possible to give stretchability (or extensibility) to the peak portion and the valley portion located on the opposite side of the integrated portion. . If stretchability (extensibility) can be provided, this portion can also function as a stress absorbing portion.

請求項１に記載された本発明によれば、壁状の板リブを設けて外装筒部とパネル嵌合部とを接続して外装筒部を支えるようにすることから、例えば外力が加わったとしても外装筒部の不必要な変形を抑えることができるという効果を奏する。また、本発明によれば、薄肉部を有するように壁状の板リブを形成することから、外装筒部の不必要な変形を抑えつつも必要に応じて折れ曲がりを許容することができるという効果を奏する。従って、本発明によれば、外装筒部の角度や方向を確保することができ、以て干渉や挟まれるといった不具合を防止することができるという効果や、作業性及び配索性の低下を防止することができるという効果を奏する。   According to the first aspect of the present invention, since the wall-shaped plate rib is provided to connect the exterior tube portion and the panel fitting portion to support the exterior tube portion, for example, an external force is applied. However, the effect that the unnecessary deformation | transformation of an exterior cylinder part can be suppressed is produced. In addition, according to the present invention, since the wall-shaped plate rib is formed so as to have a thin-walled portion, it is possible to allow bending as needed while suppressing unnecessary deformation of the exterior tube portion. Play. Therefore, according to the present invention, it is possible to ensure the angle and direction of the exterior tube portion, and thus prevent the problem of interference and pinching, and the deterioration of workability and routing. There is an effect that can be.

請求項２に記載された本発明によれば、請求項１に記載の効果に加え次のような効果も奏する。すなわち、本発明は、蛇腹筒部からのびるように壁状の板リブを設けたグロメットであるが、このように板リブを設けたとしても配置等に配慮することから、蛇腹筒部の機能を確保することができるという効果や、蛇腹筒部に応力吸収部分としての機能を持たせることができるという効果を奏する。   According to the present invention described in claim 2, in addition to the effect described in claim 1, the following effect is also achieved. That is, the present invention is a grommet provided with a wall-like plate rib so as to extend from the bellows tube portion, but even if such a plate rib is provided, the arrangement of the bellows tube portion is taken into consideration. The effect that it can ensure and the effect that a function as a stress absorption part can be given to a bellows cylinder part are produced.

本発明のグロメットの斜視図である（実施例１）。It is a perspective view of the grommet of the present invention (Example 1). グロメットの側面図である。It is a side view of a grommet. 図２に対し折れ曲がり状態を模式的に付加した側面図である。FIG. 3 is a side view schematically showing a bent state with respect to FIG. 2. 比較例となるグロメットの斜視図である。It is a perspective view of the grommet used as a comparative example. 他の例となるグロメットの側面図である（実施例２）。It is a side view of the grommet used as another example (Example 2). 従来例のグロメットの断面図である。It is sectional drawing of the grommet of a prior art example.

グロメットは、ゴム又はエラストマー製であり、車両パネルに対し水密に嵌合するパネル嵌合部と、屈曲筒部及び蛇腹筒部を有する外装筒部と、壁状の板リブとを含んで構成される。板リブは、外装筒部からパネル嵌合部に向けてのび、且つパネル嵌合部に一体化し、且つ薄肉部を有するように形成される。グロメットは、板リブに薄肉部を有することから、外装筒部の不必要な変形を抑えつつも必要に応じて折れ曲がりを許容することができる。   The grommet is made of rubber or elastomer, and includes a panel fitting portion that fits watertight to the vehicle panel, an exterior cylinder portion having a bent cylinder portion and a bellows cylinder portion, and wall-like plate ribs. The The plate rib is formed so as to extend from the outer tube portion toward the panel fitting portion, to be integrated with the panel fitting portion, and to have a thin portion. Since the grommet has a thin portion on the plate rib, the grommet can allow bending as needed while suppressing unnecessary deformation of the exterior tube portion.

以下、図面を参照しながら実施例１を説明する。図１は本発明のグロメットの斜視図である。また、図２はグロメットの側面図、図３は図２に対し折れ曲がり状態を模式的に付加した側面図、図４は比較例となるグロメットの斜視図である。   Embodiment 1 will be described below with reference to the drawings. FIG. 1 is a perspective view of a grommet according to the present invention. 2 is a side view of the grommet, FIG. 3 is a side view schematically showing a bent state with respect to FIG. 2, and FIG. 4 is a perspective view of the grommet as a comparative example.

図１及び図２において、グロメット１は、特に限定するものでないが二物体のものとして設けられ、また、自動車等の車両用のものとして設けられる。グロメット１は、樹脂製で硬質になるインナー部材２と、このインナー部材２の外側に取り付けられるゴム製（例えばＥＰＤＭ。又はエラストマー製）で軟質になるアウター部材３とを備えて構成される。グロメット１は、本実施例において、車両パネル（図示省略）及びリアドア（図示省略）に取り付けられるとともに、これらに跨って配索されるワイヤハーネス（図示省略）を外装するために設けられる。   1 and 2, the grommet 1 is provided as a two-object object, although not particularly limited, and is also provided for a vehicle such as an automobile. The grommet 1 includes an inner member 2 that is made of resin and is hard, and an outer member 3 that is made of rubber (for example, EPDM or elastomer) that is attached to the outside of the inner member 2 and is soft. In the present embodiment, the grommet 1 is attached to a vehicle panel (not shown) and a rear door (not shown), and is provided to cover a wire harness (not shown) arranged over the grommet 1.

尚、上記車両パネルの他に車両のフレーム等も挙げられるものとする。   In addition to the vehicle panel, a vehicle frame and the like are also exemplified.

インナー部材２は樹脂の成型品であって、このようなインナー部材２には、ワイヤハーネスを固定するためのハーネス固定部４と、図示しない係止部とが形成される。インナー部材２は、アウター部材３の後述するパネル嵌合部５の内側や、後述するリアドア側のパネル嵌合部の内側に本体部分が取り付けられ、上記係止部によって車両パネルやリアドアに係止される構造を有する。ここでは、インナー部材２を公知の構造であるものとし、詳細な説明は省略するものとする。   The inner member 2 is a molded product of resin, and the inner member 2 is formed with a harness fixing portion 4 for fixing the wire harness and a locking portion (not shown). The inner member 2 has a main body portion attached to the inner side of a panel fitting portion 5 to be described later of the outer member 3 or to the inner side of a panel fitting portion on the rear door side to be described later, and is locked to the vehicle panel or the rear door by the locking portion. Has a structure. Here, the inner member 2 is assumed to have a known structure, and detailed description thereof is omitted.

アウター部材３は、所謂グロメット本体に相当し、パネル嵌合部５と、このパネル嵌合部５に一端が連続する外装筒部６と、外装筒部６の他端に連続する図示しないリアドア側のパネル嵌合部とを含んで構成される。また、アウター部材３は、本発明の特徴部分となる板リブ７を含んで構成される。   The outer member 3 corresponds to a so-called grommet body, a panel fitting portion 5, an exterior cylinder portion 6 having one end continuous with the panel fitting portion 5, and a rear door side (not shown) continuing to the other end of the exterior cylinder portion 6. And a panel fitting portion. Moreover, the outer member 3 is comprised including the plate rib 7 used as the characteristic part of this invention.

パネル嵌合部５は、車両パネルに対し水密に嵌合する形状に形成される。また、パネル嵌合部５は、この内側にインナー部材２を保持する形状にも形成される。パネル嵌合部５は、平坦な上面として形成される上壁８を有する。この上壁８の略中央位置には、図示しないハーネス挿通孔が形成される。ハーネス挿通孔の縁部には、外装筒部６の一端が連成される。上壁８は、アウター部材３の内側にインナー部材２が取り付けられると、恰も剛性が付加されたような状態になる。   The panel fitting part 5 is formed in the shape fitted watertight with respect to a vehicle panel. Moreover, the panel fitting part 5 is also formed in the shape which hold | maintains the inner member 2 inside this. The panel fitting part 5 has the upper wall 8 formed as a flat upper surface. A harness insertion hole (not shown) is formed at a substantially central position of the upper wall 8. One end of the outer cylinder portion 6 is coupled to the edge portion of the harness insertion hole. When the inner member 2 is attached to the inner side of the outer member 3, the upper wall 8 is in a state in which the rigidity is added.

外装筒部６は、ワイヤハーネスの外側を覆う円筒状の部分であって、リアドアの開閉動に配慮した長さに形成される。また、外装筒部６は、アウター部材３がゴム製（又はエラストマー製）のものであることから、リアドアの開閉動に追従可能な形状にも形成される。外装筒部６は柔軟性を有し、このような外装筒部６のパネル嵌合部５側には、屈曲筒部９と、蛇腹筒部１０と、ストレート筒部１１とが形成される。   The exterior cylinder part 6 is a cylindrical part which covers the outer side of a wire harness, and is formed in the length considered the opening / closing movement of the rear door. Moreover, since the outer member 3 is made of rubber (or made of elastomer), the outer cylinder portion 6 is also formed in a shape that can follow the opening and closing movement of the rear door. The exterior cylinder part 6 has flexibility, and a bent cylinder part 9, a bellows cylinder part 10, and a straight cylinder part 11 are formed on the panel fitting part 5 side of the exterior cylinder part 6 as described above.

屈曲筒部９は、パネル嵌合部５に対し屈曲した状態で連続するように形成（成形）される。具体的には、屈曲筒部９の一端がパネル嵌合部５のハーネス挿通孔の縁部に連続し、他端が上壁８の垂直軸に交差する方向に向くように屈曲した状態に形成される。外装筒部６の角度θや方向Ｄは、屈曲筒部９の屈曲状態にて決定される。   The bent tube portion 9 is formed (molded) so as to be continuous with the panel fitting portion 5 in a bent state. Specifically, it is formed in a state in which one end of the bent tube portion 9 is continuous with the edge portion of the harness insertion hole of the panel fitting portion 5 and the other end is bent so as to face the direction intersecting the vertical axis of the upper wall 8. Is done. The angle θ and the direction D of the outer tube portion 6 are determined by the bent state of the bent tube portion 9.

蛇腹筒部１０は、外装筒部６における曲げ部分であって、複数の山部１２及び谷部１３を有する公知の蛇腹管形状に形成される。蛇腹筒部１０は、この一端が屈曲筒部９の上記他端に連続し、そして、所定長さで真っ直ぐにのびるように形成される（蛇腹筒部１０は、本実施例において山部１２が七つある長さに形成される）。   The bellows tube portion 10 is a bent portion in the outer tube portion 6 and is formed in a known bellows tube shape having a plurality of peaks 12 and valleys 13. The bellows tube portion 10 is formed so that one end thereof is continuous with the other end of the bent tube portion 9 and extends straight at a predetermined length (the bellows tube portion 10 is formed of the mountain portion 12 in this embodiment. It is formed in a length of seven).

ストレート筒部１１は、外装筒部６における直管部分であって、この一端が蛇腹筒部１０の他端に連続し、そして、所定長さで真っ直ぐにのびるように形成される。また、ストレート筒部１１の他端は、リアドア側の蛇腹筒部に連続するように、又はリアドア側のパネル嵌合部に対し直接連続するように形成される。尚、ストレート筒部１１は、これを設けずに蛇腹筒部１０にて代替してもよいものとする。   The straight tube portion 11 is a straight tube portion of the exterior tube portion 6, and one end of the straight tube portion 11 is continuous with the other end of the bellows tube portion 10, and is formed to extend straight at a predetermined length. The other end of the straight tube portion 11 is formed so as to be continuous with the bellows tube portion on the rear door side or directly with respect to the panel fitting portion on the rear door side. The straight tube portion 11 may be replaced with the bellows tube portion 10 without providing the straight tube portion 11.

板リブ７は、外装筒部６の不必要な変形を抑えて角度θや方向Ｄを確保する部分であり、蛇腹筒部１０からパネル嵌合部５の上壁８へとのびて一体化するように、また、外装筒部６を支えることができるように形成される。具体的には、上壁８の垂直軸に対し若干傾いた状態でのびるような壁状のリブ形状に形成される（図示の形状は一例であるものとする）。   The plate rib 7 is a part that suppresses unnecessary deformation of the exterior cylinder part 6 and secures the angle θ and the direction D, and extends from the bellows cylinder part 10 to the upper wall 8 of the panel fitting part 5 to be integrated. In addition, the outer cylinder portion 6 is formed so as to be supported. Specifically, it is formed into a wall-like rib shape that extends slightly inclining with respect to the vertical axis of the upper wall 8 (the illustrated shape is an example).

板リブ７は、本実施例において七つある山部１２のうちの四番目、すなわち真ん中の山部１２に一体化するとともに、この真ん中の山部１２の近傍にある谷部１３にも一体化するように形成される。板リブ７は、上記のような位置にて蛇腹筒部１０に対し連続することから、板リブ７が連続しても蛇腹筒部１０の機能は損なわれないものとする。その理由としては、板リブ７の一体化部分の反対側に蛇腹伸長部１４が、また、蛇腹伸長部１４よりもストレート筒部１１側に蛇腹屈曲部１５がそれぞれ形成されるからである（図３参照）。   In this embodiment, the plate rib 7 is integrated with the fourth of the seven peaks 12, that is, the middle peak 12, and is also integrated with the valley 13 in the vicinity of the middle peak 12. To be formed. Since the plate rib 7 continues to the bellows tube portion 10 at the above position, the function of the bellows tube portion 10 is not impaired even if the plate rib 7 continues. The reason is that the bellows extension 14 is formed on the opposite side of the integrated portion of the plate rib 7 and the bellows bending part 15 is formed on the straight tube 11 side of the bellows extension 14 (see FIG. 3).

蛇腹伸長部１４は、外装筒部６の曲げ（例えばリアドアの開閉動に伴う曲げであり、図３の二点鎖線を参照）に対し山部１２の間隔がのびるように形成される。また、蛇腹屈曲部１５は、外装筒部６の曲げに応じて伸縮して所定の屈曲状態になるように形成される。蛇腹伸長部１４は、山部１２の間隔がのびることから、これを応力吸収部分として機能させることもできる。   The bellows extension 14 is formed such that the distance between the peaks 12 extends with respect to the bending of the exterior cylinder 6 (for example, bending associated with the opening and closing movement of the rear door, see the two-dot chain line in FIG. 3). Further, the bellows bending portion 15 is formed so as to expand and contract in accordance with the bending of the outer tube portion 6 to be in a predetermined bending state. Since the space | interval of the peak part 12 extends, the bellows extension part 14 can also be made to function as a stress absorption part.

以上のような板リブ７を設けることで、外装筒部６の不必要な変形（屈曲筒部９での倒れや曲がり）を抑えて角度θや方向Ｄを確保することができるという効果を奏する。角度θや方向Ｄを確保することができれば、車両への干渉やリアドアに挟まれるといった不具合を防止することもできるという効果を奏する。   By providing the plate rib 7 as described above, an effect that the angle θ and the direction D can be secured while suppressing unnecessary deformation (falling or bending at the bent tube portion 9) of the exterior tube portion 6 is achieved. . If the angle θ and the direction D can be secured, it is possible to prevent problems such as interference with the vehicle and being caught between the rear doors.

また、板リブ７を設けることで、屈曲筒部９での応力集中や、屈曲筒部９とパネル嵌合部５との連続部分での応力集中も抑制することができるという効果を奏する。さらに、応力集中を抑制することができれば、耐久性の向上も図ることができるという効果を奏する。   Further, by providing the plate rib 7, it is possible to suppress the stress concentration at the bent tube portion 9 and the stress concentration at the continuous portion between the bent tube portion 9 and the panel fitting portion 5. Furthermore, if the stress concentration can be suppressed, there is an effect that the durability can be improved.

この他、板リブ７を設けることで、外装筒部６の破断も防止することができるという効果を奏する。   In addition, by providing the plate rib 7, there is an effect that the outer tube portion 6 can be prevented from being broken.

尚、板リブ７を設けない場合には、図４で比較例として示すグロメット２０１のように屈曲筒部２０２で倒れたり曲がったりしてしまう虞がある。すなわち、角度θや方向Ｄ（図２参照）を確保することができなくなることから、車両への干渉やリアドアに挟まれてしまうといった不具合が懸念される。   In the case where the plate rib 7 is not provided, there is a possibility that the bent tube portion 202 may fall down or bend like a grommet 201 shown as a comparative example in FIG. That is, since the angle θ and the direction D (see FIG. 2) cannot be secured, there is a concern that the vehicle may interfere with the vehicle or be pinched by the rear door.

図１ないし図３において、板リブ７は、必要に応じてこれ自身が折れ曲がるように形成される。そのため、板リブ７には、薄肉部１６が形成される。薄肉部１６は、板リブ７の更なる特徴部分として形成される。   In FIG. 1 thru | or FIG. 3, the plate rib 7 is formed so that this may bend itself as needed. Therefore, the thin portion 16 is formed on the plate rib 7. The thin part 16 is formed as a further characteristic part of the plate rib 7.

薄肉部１６は、板リブ７が折れ曲がる際の折れ曲がり部分として形成される。薄肉部１６は、板リブ７の外面１７の所定位置を凹ませるように形成され、また、この凹みは上壁８の垂直軸に対して直交する方向にのびるように形成される。板リブ７は、薄肉部１６を有するように形成されることから、外装筒部６の不必要な変形を抑えつつも必要に応じて折れ曲がりを許容することができるという効果を奏する。必要に応じて折れ曲がりを許容することができれば、作業性及び配索性の向上を図ることができるという効果も奏する。   The thin portion 16 is formed as a bent portion when the plate rib 7 is bent. The thin portion 16 is formed so as to be recessed at a predetermined position of the outer surface 17 of the plate rib 7, and the recess is formed so as to extend in a direction perpendicular to the vertical axis of the upper wall 8. Since the plate rib 7 is formed so as to have the thin-walled portion 16, there is an effect that bending can be allowed as needed while suppressing unnecessary deformation of the outer tube portion 6. If bending can be permitted as necessary, the workability and routing can be improved.

以下、図面を参照しながら実施例２を説明する。図５は他の例となるグロメットの側面図である。尚、上記実施例１と基本的に同じ構成部材には同一の符号を付して詳細な説明を省略する。   Embodiment 2 will be described below with reference to the drawings. FIG. 5 is a side view of another example grommet. Note that the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

図５において、実施例２のグロメット１は、実施例１のグロメット１に対し、薄肉部１６の形成位置のみが相違する。実施例２では、板リブ７の内面１８に配置形成される。薄肉部１６は、内面１８の所定位置を凹ませるように形成される。この凹みは、実施例１と同様に上壁８の垂直軸に対して直交する方向にのびるように形成される。   In FIG. 5, the grommet 1 of the second embodiment is different from the grommet 1 of the first embodiment only in the formation position of the thin portion 16. In Example 2, it is arranged and formed on the inner surface 18 of the plate rib 7. The thin portion 16 is formed so as to dent a predetermined position of the inner surface 18. The recess is formed so as to extend in a direction perpendicular to the vertical axis of the upper wall 8 as in the first embodiment.

実施例２のグロメット１は、薄肉部１６の形成位置のみ相違することから、実施例１と同様の効果を奏する。   The grommet 1 of the second embodiment has the same effects as the first embodiment because only the formation position of the thin portion 16 is different.

この他、本発明は本発明の主旨を変えない範囲で種々変更実施可能なことは勿論である。   In addition, the present invention can of course be modified in various ways within the scope not changing the gist of the present invention.

１…グロメット、 ２…インナー部材、 ３…アウター部材、 ４…ハーネス固定部、 ５…パネル嵌合部、 ６…外装筒部、 ７…板リブ、 ８…上壁、 ９…屈曲筒部、 １０…蛇腹筒部、 １１…ストレート筒部、 １２…山部、 １３…谷部、 １４…蛇腹伸長部、 １５…蛇腹屈曲部、 １６…薄肉部、 １７…外面、 １８…内面   DESCRIPTION OF SYMBOLS 1 ... Grommet, 2 ... Inner member, 3 ... Outer member, 4 ... Harness fixing part, 5 ... Panel fitting part, 6 ... Exterior cylinder part, 7 ... Plate rib, 8 ... Upper wall, 9 ... Bending cylinder part, 10 ... bellows cylinder part, 11 ... straight cylinder part, 12 ... mountain part, 13 ... valley part, 14 ... bellows extension part, 15 ... bellows bending part, 16 ... thin wall part, 17 ... outer surface, 18 ... inner surface

Claims (2)

車両パネルに対し水密に嵌合するパネル嵌合部と、前記車両パネルを貫通するワイヤハーネスを覆う外装筒部とを有するグロメットにおいて、
前記外装筒部は、前記パネル嵌合部に対し屈曲状態で連続する屈曲筒部と、該屈曲筒部に連続する蛇腹筒部とを有し、
該蛇腹筒部には、前記パネル嵌合部に向けてのび且つ該パネル嵌合部に一体化する壁状の板リブを設け、
該板リブには、薄肉部を形成する
ことを特徴とするグロメット。 In the grommet having a panel fitting portion that fits water tightly with respect to the vehicle panel, and an exterior tube portion that covers the wire harness that penetrates the vehicle panel,
The exterior cylinder part includes a bent cylinder part that is continuous with the panel fitting part in a bent state, and a bellows cylinder part that is continuous with the bent cylinder part,
The bellows tube portion is provided with a wall-like plate rib extending toward the panel fitting portion and integrated with the panel fitting portion,
A thin grommet is formed on the plate rib. 請求項１に記載のグロメットにおいて、
前記板リブは、前記蛇腹筒部に形成される複数の山部及び谷部のうち一部に一体化する
ことを特徴とするグロメット。 The grommet according to claim 1,
The grommet, wherein the plate rib is integrated into a part of a plurality of crests and troughs formed in the bellows cylinder.
JP2013099036A 2013-05-09 2013-05-09 Grommet Active JP6080205B2 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0714452A (en) * 1993-06-24 1995-01-17 Yazaki Corp Grommet
JPH0993760A (en) * 1995-09-26 1997-04-04 Yazaki Corp Grommet
JP2002374612A (en) * 2001-06-14 2002-12-26 Sumitomo Wiring Syst Ltd Grommet
JP2010268572A (en) * 2009-05-13 2010-11-25 Yazaki Corp Grommet

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0714452A (en) * 1993-06-24 1995-01-17 Yazaki Corp Grommet
JPH0993760A (en) * 1995-09-26 1997-04-04 Yazaki Corp Grommet
JP2002374612A (en) * 2001-06-14 2002-12-26 Sumitomo Wiring Syst Ltd Grommet
JP2010268572A (en) * 2009-05-13 2010-11-25 Yazaki Corp Grommet

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