JP3743210B2 - Grommet - Google Patents

Grommet Download PDF

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Publication number
JP3743210B2
JP3743210B2 JP14783899A JP14783899A JP3743210B2 JP 3743210 B2 JP3743210 B2 JP 3743210B2 JP 14783899 A JP14783899 A JP 14783899A JP 14783899 A JP14783899 A JP 14783899A JP 3743210 B2 JP3743210 B2 JP 3743210B2
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JP
Japan
Prior art keywords
diameter portion
cylindrical
grommet
outer peripheral
diameter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP14783899A
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Japanese (ja)
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JP2000340051A (en
Inventor
貴紀 伊藤
隆史 鈴木
智 網広
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumitomo Wiring Systems Ltd
Original Assignee
Sumitomo Wiring Systems Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sumitomo Wiring Systems Ltd filed Critical Sumitomo Wiring Systems Ltd
Priority to JP14783899A priority Critical patent/JP3743210B2/en
Publication of JP2000340051A publication Critical patent/JP2000340051A/en
Application granted granted Critical
Publication of JP3743210B2 publication Critical patent/JP3743210B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Insulating Bodies (AREA)

Description

【0001】
【発明の属する技術分野】
本発明はグロメットに関し、詳しくは、車体パネル等に形成された取付け孔にワイヤハーネスを挿通する際に、該取付け孔とワイヤハーネスが接触するのを防止するとともに、取付け孔を通してパネル内に水等が侵入するのを防止することができるグロメットに関する。
【0002】
【従来の技術】
一般に、車体の外部と内部を区画するパネル部材に形成された取付け孔にワイヤハーネスを保持したグロメットを挿通する際に、取付け孔とグロメットが接触するのを防止するとともに、水等が取付け孔とコルゲート管の間の隙間からパネル内(室内)に侵入するのを防止するためにグロメットが使用されており、特に、長い経路に亘ってワイヤハーネスを保護する必要がある場合には、図5、6に示すようなグロメットが使用されている。
【0003】
図5、6において、1は弾性部材からなるグロメットであり、このグロメット1は外周部に車体パネル2に形成された取付け孔2aに係合可能な係合溝3aを有する筒状大径部3と、筒状大径部3から突出するとともに延在方向の任意の部分に蛇腹部4aを有する伸縮自在な筒状小径部4とから構成されている。
【0004】
このグロメット1に図示しないワイヤハーネスを取付ける際には、図6(a)に示すような3本の拡径および縮径自在な3本のアーム5a〜5cを有するグロメット拡径機5を用い、アーム5a〜5cを筒状小径部4に挿通して筒状小径部4を拡径した後、ワイヤハーネスを筒状小径部4および筒状大径部3に挿通するようになっている。
【0005】
そして、ワイヤハーネスの挿通後に、取付け孔2aに係合溝3aを係合させることにより、図6(b)に示すようにグロメット1を介してワイヤハーネスを車体パネル2に取付ける。
【0006】
【発明が解決しようとする課題】
しかしながら、このようなグロメット1にあっては、グロメット拡径機5を用いて筒状小径部4を拡径してワイヤハーネスを挿通するようにしているが、筒状小径部4が長尺であることから、筒状小径部4を十分に拡径することができず、ワイヤハーネスをグロメット1に挿通し難いという問題が発生してしまった。
【0007】
また、蛇腹部4aを収縮させて筒状小径部4を短くして拡径することも考えられるが、このようにしても直径の大きい筒状大径部3の剛性が高いため、筒状大径部3を拡径し難く、ワイヤハーネスを容易に挿通することが困難であった。
【0008】
そこで本発明は、線材束を容易に挿通することができるようにして線材束の挿通作業の作業性を向上させることができるグロメットを提供することを目的としている。
【0009】
【課題を解決するための手段】
請求項1記載の発明は、上記課題を解決するために、外周部のパネル部材に形成された取付け孔に係合可能な係合溝を有する半円形状の筒状大径部と、該筒状大径部から突出するとともに延在方向の任意の部分に蛇腹部を有する伸縮自在な筒状小径部とを有し、前記筒状小径部および筒状大径部の内周部に、線材束を挿通可能なグロメットにおいて、前記係合溝が形成されていない筒状大径部の外周部の直線部分から前記蛇腹部近傍の筒状小径部の外周部に亘って1つのスリットを形成し、前記スリットは、前記筒状大径部の延在方向に亘って形成されることを特徴とするものである。
【0010】
その場合、筒状大径部の外周部から蛇腹部近傍の筒状小径部の外周部に亘ってスリットが形成されるため、蛇腹部を収縮させたときに筒状小径部および筒状大径部を容易に拡径することができ、グロメットに線材束を容易に挿通することができる。この結果、線材束の挿通作業の作業性を向上させることができる。
【0011】
【発明の実施の形態】
以下、本発明の実施形態を図面に基づいて説明する。
【0012】
図1〜4は本発明に係るグロメットの一実施形態を示す図である。
【0013】
まず、構成を説明する。図1において、11は弾性部材からなるグロメットであり、このグロメット11は筒状大径部12を有している。この筒状大径部12の外周部には係合溝12aが形成されている。この係合溝12aは車体パネル(パネル部材)13に形成された取付け孔13aに係合するようになっており、係合溝12aが取付け孔13aに係合することによりグロメット11が車体パネル13に取付けられる。
【0014】
また、筒状大径部12からは長尺の筒状小径部14が突出しており、この筒状小径部14の延在方向の任意の部分には蛇腹部14aが形成され、筒状小径部14は伸縮自在となっている。
【0015】
また、半円形状の筒状大径部12の外周部から蛇腹部14a近傍の筒状小径部14の外周部に亘って1つのスリット15が形成されており、筒状大径部12および筒状大径部12の外周部から蛇腹部14a近傍の筒状小径部14は拡径可能になっている。また、このスリット 15 は係合溝 12 aが形成されていない直線部分において筒状大径部 12 の延在方向に亘って形成されている。
【0016】
このような構成を有するグロメット11に図示しないワイヤハーネス(線材束)を取付けるには、図2(a)に示すように蛇腹部14aを縮小した後、図2(b)に示すような3本のアーム16a〜16cを有するグロメット拡径機16を用い、アーム16a〜16cを筒状小径部14に挿通して筒状小径部14を拡径する。
【0017】
この際、筒状大径部12の外周部から蛇腹部14a近傍の筒状小径部14の外周部に亘ってスリット15が形成されているため、筒状小径部14および筒状大径部12を容易に拡径することができ、グロメット11にワイヤハーネスを容易に挿通することができる。この結果、ワイヤハーネスの挿通作業の作業性を向上させることができる。
【0018】
次いで、筒状小径部14および筒状大径部12のスリット15部分にテープを張り付けてシールをした後、取付け孔13aに係合溝12aを係合させることにより、グロメット11を介してワイヤハーネスを車体パネル13に取付ける。なお、ワイヤハーネスの配線のレイアウトに応じて蛇腹部14aを伸張させることができることは勿論である。
【0019】
なお、本実施形態では、取付け孔13aに係合溝12aを係合させることによりグロメット11を車体パネル13に取付けているが、これに限らず、図3に示すように車体パネル13にボルト挿通孔13bを形成するとともに、筒状大径部12にボルト挿通孔12bを形成し、取付け孔13aに係合溝12aを係合させたときに、ボルト挿通孔12b、13bにボルト16を挿通することにより、図4に示すようにグロメット11を車体パネル13に固定するようにしても良い。
【0020】
【発明の効果】
請求項1記載の発明によれば、蛇腹部を収縮させたときに筒状小径部および筒状大径部を容易に拡径することができ、グロメットに線材束を容易に挿通することができる。この結果、線材束の挿通作業の作業性を向上させることができる。
【図面の簡単な説明】
【図1】本発明に係るグロメットの一実施形態を示す図であり、そのグロメットと車体パネルの分解図である。
【図2】(a)は一実施形態のグロメットの蛇腹部を縮小した状態を示す図、(b)は筒状小径部に拡径機を挿通して拡径する状態を示す図である。
【図3】一実施形態の他の形状のグロメットと車体パネルの分解図である。
【図4】一実施形態の他の形状のグロメットを車体パネルに取付けた状態を示す図である。
【図5】従来のグロメットの外観図である。
【図6】(a)は従来のグロメットの筒状小径部に拡径機を挿通して拡径する状態を示す図、(b)は従来のグロメットを車体パネルに取付けた状態を示す図である。
【符号の説明】
11 グロメット
12 筒状大径部
12a 係合溝
13 車体パネル(パネル部材)
13a 取付け孔
14 筒状小径部
14a 蛇腹部
15 スリット
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a grommet, and more specifically, when a wire harness is inserted into an attachment hole formed in a vehicle body panel or the like, the attachment hole and the wire harness are prevented from contacting each other, and water or the like is introduced into the panel through the attachment hole. It is related with the grommet which can prevent that it penetrate | invades.
[0002]
[Prior art]
In general, when a grommet holding a wire harness is inserted into a mounting hole formed in a panel member that divides the outside and inside of a vehicle body, the mounting hole and the grommet are prevented from contacting with each other, and water or the like is Grommets are used to prevent entry into the panel (inside the room) from the gap between the corrugated pipes, especially when it is necessary to protect the wire harness over a long path, FIG. Grommets as shown in FIG. 6 are used.
[0003]
5 and 6, reference numeral 1 denotes a grommet made of an elastic member. The grommet 1 has a cylindrical large-diameter portion 3 having an engagement groove 3 a that can be engaged with a mounting hole 2 a formed in the vehicle body panel 2 on the outer peripheral portion. And a telescopic cylindrical small-diameter portion 4 that protrudes from the cylindrical large-diameter portion 3 and has a bellows portion 4a at an arbitrary portion in the extending direction.
[0004]
When attaching a wire harness (not shown) to the grommet 1, a grommet diameter expanding machine 5 having three arms 5 a to 5 c that can be expanded and contracted as shown in FIG. After the arms 5a to 5c are inserted into the cylindrical small diameter portion 4 to expand the cylindrical small diameter portion 4, the wire harness is inserted into the cylindrical small diameter portion 4 and the cylindrical large diameter portion 3.
[0005]
Then, after the wire harness is inserted, the wire harness is attached to the vehicle body panel 2 via the grommet 1 as shown in FIG.
[0006]
[Problems to be solved by the invention]
However, in such a grommet 1, the tubular small diameter portion 4 is expanded by using the grommet diameter expanding machine 5 and the wire harness is inserted, but the cylindrical small diameter portion 4 is long. For this reason, the cylindrical small-diameter portion 4 cannot be sufficiently expanded in diameter, and a problem that it is difficult to insert the wire harness into the grommet 1 has occurred.
[0007]
Further, it is conceivable that the bellows portion 4a is contracted to shorten the cylindrical small-diameter portion 4 so as to expand the diameter. However, since the large-diameter cylindrical large-diameter portion 3 has high rigidity, the large cylindrical shape can be obtained. It was difficult to expand the diameter portion 3 and it was difficult to easily insert the wire harness.
[0008]
Then, this invention aims at providing the grommet which can improve the workability | operativity of the insertion operation | work of a wire bundle bundle so that a wire bundle bundle can be inserted easily.
[0009]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, the invention according to claim 1 is a semicircular cylindrical large-diameter portion having an engaging groove engageable with a mounting hole formed in a panel member at the outer peripheral portion, and the tube And a telescopic cylindrical small-diameter portion that protrudes from the large-diameter portion and has a bellows portion at an arbitrary portion in the extending direction, and a wire rod on the inner peripheral portion of the cylindrical small-diameter portion and the cylindrical large-diameter portion. In the grommet through which the bundle can be inserted, one slit is formed from the linear portion of the outer peripheral portion of the cylindrical large diameter portion where the engagement groove is not formed to the outer peripheral portion of the cylindrical small diameter portion near the bellows portion. The slit is formed over the extending direction of the cylindrical large-diameter portion .
[0010]
In that case, since a slit is formed from the outer peripheral portion of the cylindrical large diameter portion to the outer peripheral portion of the cylindrical small diameter portion in the vicinity of the bellows portion, the cylindrical small diameter portion and the cylindrical large diameter when the bellows portion is contracted. The diameter of the portion can be easily increased, and the wire bundle can be easily inserted into the grommet. As a result, the workability of the wire bundle insertion work can be improved.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0012]
1-4 is a figure which shows one Embodiment of the grommet which concerns on this invention.
[0013]
First, the configuration will be described. In FIG. 1, reference numeral 11 denotes a grommet made of an elastic member. The grommet 11 has a cylindrical large diameter portion 12. An engagement groove 12 a is formed on the outer peripheral portion of the cylindrical large diameter portion 12. The engagement groove 12a is engaged with an attachment hole 13a formed in the vehicle body panel (panel member) 13. The engagement groove 12a engages with the attachment hole 13a, so that the grommet 11 is connected to the vehicle body panel 13. Mounted on.
[0014]
Further, a long cylindrical small-diameter portion 14 protrudes from the cylindrical large-diameter portion 12, and a bellows portion 14a is formed in an arbitrary portion in the extending direction of the cylindrical small-diameter portion 14, and the cylindrical small-diameter portion 14 is telescopic.
[0015]
One slit 15 is formed from the outer peripheral portion of the semicircular cylindrical large diameter portion 12 to the outer peripheral portion of the cylindrical small diameter portion 14 in the vicinity of the bellows portion 14a. The cylindrical small-diameter portion 14 in the vicinity of the bellows portion 14a can be expanded from the outer peripheral portion of the large-diameter portion 12. Further, the slit 15 over the extending direction of the tubular large-diameter portion 12 is formed in the straight portion engaging groove 12 a is not formed.
[0016]
To attach a wire harness (not shown) to the grommet 11 having such a configuration, after reducing the bellows portion 14a as shown in FIG. 2 (a), three wires as shown in FIG. 2 (b) are used. Using the grommet diameter expanding machine 16 having the arms 16a to 16c, the arms 16a to 16c are inserted into the cylindrical small diameter portion 14 to expand the diameter of the cylindrical small diameter portion 14.
[0017]
At this time, since the slit 15 is formed from the outer peripheral portion of the cylindrical large diameter portion 12 to the outer peripheral portion of the cylindrical small diameter portion 14 in the vicinity of the bellows portion 14a, the cylindrical small diameter portion 14 and the cylindrical large diameter portion 12 are formed. Can be easily expanded, and the wire harness can be easily inserted into the grommet 11. As a result, the workability of the wire harness insertion work can be improved.
[0018]
Next, the tape is applied to the cylindrical small-diameter portion 14 and the slit 15 portion of the cylindrical large-diameter portion 12 for sealing, and then the engagement groove 12a is engaged with the mounting hole 13a, thereby allowing the wire harness to pass through the grommet 11. Is attached to the vehicle body panel 13. Of course, the bellows portion 14a can be extended according to the wiring layout of the wire harness.
[0019]
In this embodiment, the grommet 11 is attached to the vehicle body panel 13 by engaging the engagement groove 12a with the attachment hole 13a. However, the present invention is not limited to this, and as shown in FIG. In addition to forming the hole 13b, the bolt insertion hole 12b is formed in the cylindrical large-diameter portion 12, and when the engagement groove 12a is engaged with the mounting hole 13a, the bolt 16 is inserted into the bolt insertion holes 12b and 13b. Thus, the grommet 11 may be fixed to the vehicle body panel 13 as shown in FIG.
[0020]
【The invention's effect】
According to the first aspect of the present invention, when the bellows part is contracted, the cylindrical small diameter part and the cylindrical large diameter part can be easily expanded in diameter, and the wire bundle can be easily inserted into the grommet. . As a result, the workability of the wire bundle insertion work can be improved.
[Brief description of the drawings]
FIG. 1 is a view showing an embodiment of a grommet according to the present invention, and is an exploded view of the grommet and a vehicle body panel.
FIG. 2A is a view showing a state in which the bellows portion of the grommet according to the embodiment is reduced, and FIG. 2B is a view showing a state in which the diameter is increased by inserting a diameter expander into the cylindrical small diameter portion.
FIG. 3 is an exploded view of a grommet and a vehicle body panel having another shape according to an embodiment.
FIG. 4 is a view showing a state in which a grommet having another shape according to an embodiment is attached to a vehicle body panel.
FIG. 5 is an external view of a conventional grommet.
FIG. 6A is a view showing a state in which a diameter expander is inserted through a cylindrical small diameter portion of a conventional grommet, and FIG. 6B is a view showing a state in which the conventional grommet is attached to a vehicle body panel. is there.
[Explanation of symbols]
11 Grommet
12 Large cylindrical part
12a Engaging groove
13 Body panel (panel member)
13a Mounting hole
14 Small cylindrical section
14a bellows
15 Slit

Claims (1)

外周部のパネル部材に形成された取付け孔に係合可能な係合溝を有する半円形状の筒状大径部と、
該筒状大径部から突出するとともに延在方向の任意の部分に蛇腹部を有する伸縮自在な筒状小径部とを有し、
前記筒状小径部および筒状大径部の内周部に、線材束を挿通可能なグロメットにおいて、
前記係合溝が形成されていない筒状大径部の外周部の直線部分から前記蛇腹部近傍の筒状小径部の外周部に亘って1つのスリットを形成し、前記スリットは、前記筒状大径部の延在方向に亘って形成されることを特徴とするグロメット。
A semicircular cylindrical large-diameter portion having an engagement groove engageable with a mounting hole formed in the panel member on the outer peripheral portion;
A telescopic cylindrical small-diameter portion that protrudes from the cylindrical large-diameter portion and has a bellows portion at an arbitrary portion in the extending direction;
In the grommet capable of inserting the wire bundle into the inner peripheral portion of the cylindrical small diameter portion and the cylindrical large diameter portion,
One slit is formed from the linear portion of the outer peripheral portion of the cylindrical large diameter portion where the engagement groove is not formed to the outer peripheral portion of the cylindrical small diameter portion near the bellows portion, and the slit is the cylindrical shape A grommet formed over the extending direction of the large diameter portion .
JP14783899A 1999-05-27 1999-05-27 Grommet Expired - Fee Related JP3743210B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14783899A JP3743210B2 (en) 1999-05-27 1999-05-27 Grommet

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Application Number Priority Date Filing Date Title
JP14783899A JP3743210B2 (en) 1999-05-27 1999-05-27 Grommet

Publications (2)

Publication Number Publication Date
JP2000340051A JP2000340051A (en) 2000-12-08
JP3743210B2 true JP3743210B2 (en) 2006-02-08

Family

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5286736B2 (en) * 2007-10-09 2013-09-11 日産自動車株式会社 Grommet
JP7519228B2 (en) 2020-08-05 2024-07-19 株式会社Lixil Wiring concealment parts and door frame remodeling structure

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