JP3768295B2

JP3768295B2 - Fastener

Info

Publication number: JP3768295B2
Application number: JP18579596A
Authority: JP
Inventors: 功中林
Original assignee: Piolax Inc
Current assignee: Piolax Inc
Priority date: 1996-07-16
Filing date: 1996-07-16
Publication date: 2006-04-19
Anticipated expiration: 2016-07-16
Also published as: JPH1030622A

Description

【０００１】
【発明の属する技術分野】
本発明は、グロメットの頭部に開設された開口にピン部材の軸部を挿入していき、挿入終了時に、前記開口の周縁に連続して延設された筒部の延設部を、前記ピン部材の軸部が押し広げるようにしたファスナに関する。
【０００２】
【従来の技術】
従来のファスナとしては、例えば、実公平１−３５９２８号公報に開示されたものがある。
すなわち、グロメットの頭部に開口が開設され、該開口の周縁部に連続して脚片が垂下され、ピンの軸部に外部へ突出する一対の爪が形成され、ピンの軸部をグロメットの開口に通していくと、一対の爪の一方がグロメットの開口の周縁を乗越えるとともに、一対の爪の他方がグロメットの開口の周縁に係止するようになり、一対の爪が開口の周縁を挟むようになり、それにより、グロメットとピンとが仮組されるものである。一般的にグロメットとピンとはこの仮組された状態で搬送され、ピンの軸部が完全に挿入されて組み付けが完了する。
【０００３】
【発明が解決しようとする課題】
しかしながら、このような従来のファスナでは、一対の爪の間の間隙が狭く、仮組時において挿入する際の力加減によっては、一対の爪が共にグロメットの開口の周縁を乗越えてしまう場合が生じ、一対の爪が共に乗り越えた場合には、例えば、ピンの軸部を一度引き抜いて、仮組作業をやり直す必要があり、作業性が良くない、一方、一対の爪の間の間隙を広げていくと、広げた分だけ、グロメットとピンとに相互のガタツキが増大して、仮組み状態が不揃いとなり、組み付ける際や搬送時に取り扱いにくいという問題点があった。
本発明は、このような従来の問題点に着目してなされたもので、仮組作業が容易で、しかも仮組状態でピン部材とグロメットとのガタツキが減少し、仮組状態のバラツキが低減して、仮組付作業性を向上することができるファスナを提供することを目的としている。
【０００４】
【課題を解決するための手段】
かかる目的を達成するための本発明の要旨とするところは、次の各項に記載された事項に存する。
［１］グロメット（２０）の頭部（２１）に開設された開口（２２）にピン部材（１０）の軸部（１２）を挿入していき、挿入終了時に、前記開口（２２）の周縁に連続して延設され、筒壁（２４）の先端から前記頭部（２１）側に向かって延びるスリット（２５）が形成された筒部（２３）の延設部を、前記ピン部材（１０）の軸部（１２）が押し広げるようにしたファスナにおいて、
前記ピン部材（１０）の挿入初期位置と挿入終了位置との間の半挿入範囲内に設定される仮組位置で、係合部（１５）が当接して前記ピン部材（１０）の抜けを規制する、前記スリット（２５）の一端部に形成された仮拘束部（２６）と、
基端が前記グロメット（２０）の開口（２２）周縁に当接するとともに前記軸部（１２）から前記筒部（２３）に弾撥的に当接し、前記ピン部材（１０）を前記係合部（１５）と仮拘束部（２６）とが当接する方向へ付勢して、該ピン部材（１０）を前記仮組位置に保持する弾撥片（１６）と、
前記軸部（１２）または前記筒部（２３）の一方に設けられ、前記ピン部材（１０）を前記仮組位置からさらに挿入する際に前記弾撥片（１６）を収容する収納空間（１７）とを備えたことを特徴とするファスナ。
【０００５】
［２］前記弾撥片（１６）は、前記収納空間（１７）に収容される収納状態では多角形断面形の軸部（１２）の角部（１２ａ）を構成し、前記弾撥的に当接する弾撥状態では該角部（１２ａ）が前記軸部（１２）から分離することを特徴とする１項記載のファスナ。
【０００６】
［３］前記係合部（１５）は、前記多角形断面形の軸部（１２）の角部（１２ａ）を外方へ突出させて形成し、
筒部（２３）は前記多角形断面形の軸部（１２）が内挿する同じく多角形断面形の筒壁（２４）を有し、該多角形断面形の筒壁（２４）の隅部に、前記軸部（１２）の軸線と平行に延び、前記係合部（１５）が移動可能に嵌合するように前記スリット（２５）が形成されていることを特徴とする１または２項記載のファスナ。
【０００７】
次に前記各項に記載された発明の作用について説明する。
［１］項記載のファスナでは、
ピン部材（１０）の軸部（１２）をグロメット（２０）の開口（２２）に挿入していくと、ピン部材（１０）は、弾撥片（１６）によって付勢され、係合部（１５）と仮拘束部（２６）とが当接する方向へ容易に移動させられ、仮組位置に保持される。作業者は単に仮組位置近傍にまでピン部材（１０）を挿入するだけで、後は弾撥片（１６）によって自動的に、仮組位置まで移動調整されることになり、仮組作業を容易に行なうことができる。
【０００８】
ピン部材（１０）が仮組位置に保持された状態では、ピン部材（１０）とグロメット（２０）との相互ガタつきは小さく、仮組状態のバラツキを低減することができ、容易に取り扱うことができる。
［２］仮組位置にて係合部（１５）が仮拘束部（２６）を乗越えて、ピン部材（１０）は半挿入範囲内で移動可能になる。前後して、軸部（１２）または筒部（２３）の一方に設けられた弾撥片（１６）が軸部（１２）または筒部（２３）の他方に弾撥的に当接し、ピン部材（１０）を抜き方向へ付勢する。それにより、ピン部材（１０）は半挿入範囲内で抜き方向へ移動し、やがて、係合部（１５）が仮拘束部（２６）に当接して、ピン部材（１０）が抜け不能に仮組位置に保持される。すなわち、ピン部材（１０）は仮組位置を大きく行過ぎて挿通しても、仮組位置に戻り、その仮組位置に保持され、作業者は、単に係合部（１５）が仮拘束部（２６）を乗越えさせればよく、仮組作業を容易に行なうことができる。
【０００９】
弾撥片（１６）がピン部材（１０）を抜き方向へ付勢するので、ピン部材（１０）の頭部（１１）とグロメット（２０）の頭部（２１）との間の間隔が十分広くなり、車体パネル等への最終組付作業時に作業者の太い指や、さらに軍手などの手袋によって太さを増した指、自動機のマニピュレータでも、ピン部材（１０）の頭部（１１）やピン部材（１０）の首部を確実に把持することができる。
【００１０】
［３］項記載のファスナでは、
前記弾撥片（１６）は、前記収納空間（１７）に収容される収納状態では多角形断面形の軸部（１２）の角部（１２ａ）を構成し、前記弾撥的に当接する弾撥状態では該角部（１２ａ）が前記軸部（１２）から分離するようにしたので、多角形断面形の軸部（１２）が挿通する筒部（２３）は、その内壁を同じく多角形断面形に形成すればよく、成形し易い形にすることができる。
【００１１】
［４］項記載のファスナでは、
前記係合部（１５）は、前記多角形断面形の軸部（１２）の角部（１２ａ）を外方へ突出させて形成し、筒部（２３）は前記多角形断面形の軸部（１２）が内挿する同じく多角形断面形の筒壁（２４）を有し、該筒壁（２４）は、前記軸部（１２）の軸線と平行に延び、前記係合部（１５）が移動可能に嵌合するスリット（２５）を有し、前記仮拘束部（２６）は、前記スリット（２５）の一端部に形成されているので、ピン部材（１０）およびグロメット（２０）は、その軸部（１２）および筒部（２３）を多角形断面形にそれぞれ形成し、軸部（１２）の角部（１２ａ）には係合部（１５）を形成し、多角形断面形の筒部（２３）の隅部には係合部（１５）に対応してスリット（２５）を形成すれば済み、ピン部材（１０）およびグロメット（２０）が複雑な形に成らないで、共に、成形し易い形にすることができる。
【００１２】
【発明の実施の形態】
以下、図面に基づき本発明の一実施の形態を説明する。
各図は本発明の一実施の形態を示している。
図１〜図８に示すように、本実施の形態にかかるファスナは、ピン部材１０とグロメット２０とから成る。ピン部材１０は、頭部１１と軸部１２とを有し、軸部１２の一般部は図５に示すように四角形断面形に形成されている。また、ピン部材１０の首部は図４に示すように、十字状のリブ形に成形されている。
【００１３】
ピン部材１０の軸先部１４には係合部１５が形成されている。係合部１５は、図７に示すように、四角形断面形の軸部の４つの角部１２ａを外方へそれぞれ突出させて成る。軸部１０の軸先部１４は、図３および図６に示すように、係合部１５から先端に向かって軸径が徐々に細く成っている。図８に示すように、ピン部材１０の軸先部と首部との間には、弾撥片１６が設けられている。弾撥片１６は、その弾撥力により軸部１２の対角をなす一対の角部１２ａより外方へ斜めに突出していて、弾撥力に抗して軸心側へ撓んだ際に四角形断面形の軸部１２の角部１２ａを構成するように形成されている。軸部１２の角部１２ａには、一対の弾撥片１６に対応して、撓んだ際の弾撥片１６を収容するための収容凹部である収納空間１７が形成されている。
【００１４】
図１〜図３および図９〜図１１に示すように、グロメット２０は、頭部２１と筒部２３とを有していて、頭部２１にはピン部材１０の軸部１２を挿通させるための四角形状の開口２２が開設されている。筒部２３は開口２２に連続して垂下するように形成され、筒部２３は、軸部１２と同じく四角形断面形の筒壁２４に成形されている。筒壁２４の四隅には、図９および図１１に示すように、筒壁２４の先端から頭部２１側に向かって延びるスリット２５が形成されている。４つのスリット２５が形成されることで筒壁２４は４つに分離され、分離された各筒壁２４の先端は、縮径されており、係合部１５が当接して、ピン部材１０を挿入終了位置で抜け不能に拘束する本拘束部２７に成っている。また、スリット２５の奥部である一端部には、係合部１５が当接してピン部材１０を抜け不能に仮組位置に拘束する仮拘束部２６が形成されている。
係合部１５と弾撥片１６の基端との間の間隔は、仮拘束部２６と開口２２の周縁との間の間隔より広めに設定されている。
【００１５】
次に、本実施の形態の作用を説明する。
ピン部材１０の軸部１２をグロメット２０の開口２２に通していくと、軸部１２の軸先部１４がグロメット２０の筒壁２４内に嵌り込み、やがて、軸先部１４の係合部１５がスリット２５に嵌り込み、スリット２５に沿って移動する。
【００１６】
軸先部１４の係合部１５がスリット２５に沿って移動していくと、弾撥片１６の基端がグロメット２０の開口２２の周縁に当接し、開口２２の周縁がその付勢力に抗して弾撥片１６を収納空間１７側へ押し込んでいく。
【００１７】
弾撥片１６の付勢力により、ピン部材１０の軸部１２が抜け方向へ押し戻され、軸先部１４の係合部１５もスリット２５に沿って逆方向へ移動し、やがて、軸先部１４の係合部１５が、スリット２５の奥部である仮拘束部２６に当接し、ピン部材１０の軸部１２が抜け不能に仮組位置に拘束される。
【００１８】
ピン部材１０の軸部１２をグロメット２０の筒壁２４内に深く差し込んだ場合にも、弾撥片１６が大きく収納空間１７側に撓み、弾撥片１６の付勢力が大きくなり、その大きな付勢力でピン部材１０の軸部１２が抜け方向へ押し戻され、仮組位置に拘束されるようになるので、ピン部材１０の軸部１２をグロメット２０の筒壁２４内に差し込み加減が比較的緩やかであり、ピン部材１０とグロメット２０との仮組を容易に行なうことができる。ピン部材１０とグロメット２０とは、仮組された状態で使用現場へ搬送される。
【００１９】
上記仮組作業中の短い時間内に仮組位置までの移動が完了しないケースがあると、この搬送途中で振動を受けている間に少しずつ移動を繰り返して、使用現場へ到着する頃には、係合部１５が、スリット２５の奥部である仮拘束部２６に当接するようになり、仮組位置に向けてさらに接近することになる。
使用現場においては、弾撥片１６がピン部材１０を抜き方向へ付勢しているので、ピン部材１０が仮組位置近傍に戻るようになり、それにより、ピン部材１０の頭部１１とグロメット２０の頭部２１との間の間隔が十分広くなり、その結果、車体パネル等への最終組付作業時に作業者の太い指や、さらに軍手などの手袋によって太さを増した指、自動機のマニピュレータでも、ピン部材１０の頭部１１やピン部材１０の首部を確実に把持することができ、作業性が向上する。
【００２０】
ピン部材１０を仮組位置からさらにグロメット２０の筒壁２４内に差し込んでいくと、グロメット２０の開口２２の周縁に押されて、弾撥片１６が収納空間１７側に撓み、収納空間１７に収容され、軸部１２の角部を構成するようになり、軸部１２が全体的に四角形断面形になってグロメット２０の開口２２内に入り込む。
軸部１２の軸先部１４が４つのスリット２５の各先端部を弾撥力に抗して外方へ押し出し、４つのスリット２５の各先端部が成す隙間が広くなり、広くなった隙間に軸部１２の軸先部１４が挿通する。広くなった隙間に軸部１２の軸先部１４が通り抜けると、４つのスリット２５の各先端部が復元して、スリット２５の本拘束部２７が、軸部１２の係合部１５に弾撥的に係合し、ピン部材１０が本組位置に拘束される。
【００２１】
前記実施の形態では、ピン部材１０とグロメット２０とを仮組して、さらに、本組するものを示したが、ピン部材１０とグロメット２０とを直接的に本組するには、ピン部材１０をグロメット２０の開口２２に通し、４つのスリット２５の各先端部が復元して、スリット２５の本拘束部２７が、軸部１２の係合部１５に弾撥的に係合し、ピン部材１０が本組位置に拘束されるまで、ピン部材１０を押し込んでいけば良い。
【００２２】
前記実施の形態にかかるファスナでは、弾撥片１６と収納空間１７とをピン部材１０側に設けたものを示したが、グロメット２０側に設けてもよい。
【００２３】
また、ピン部材１０の軸部１２を四角形断面形に形成したものを示したが、五角形や６角形の断面形に形成してもよいことはいうまでもなく、弾撥片１６を一対設けたものを示したが、ピン部材１０の軸部１２が多角形断面形に成るに応じて三つ以上にしてもよい。
【００２４】
【発明の効果】
本発明にかかるファスナによれば、ピン部材の軸部をグロメットの開口に挿入して、ピン部材が半挿入範囲内で移動可能になるが、弾撥片が筒部に弾撥的に当接し、ピン部材を仮組位置へ向かう方向へ付勢し、仮組位置では係合部が仮拘束部に当接してピン部材の移動が規制されるので、仮組作業が容易で、しかも仮組状態でピン部材とグロメットとのガタツキが減少して、仮組状態のバラツキが低減して、仮組付作業性を向上することができる。
さらに、仮拘束部がグロメットの筒壁のスリットの一端部に形成されているので、基端がグロメットの開口周縁に当接するとともに軸部から筒部に弾撥的に当接する弾撥片をピン部材に設けるだけで、仮組付けできる構成を簡易なものとすることができる。
【図面の簡単な説明】
【図１】本発明の一実施の形態を示すファスナを部分的に破断して表わした正面図である。
【図２】本発明の一実施の形態を示すファスナの正面図である。
【図３】本発明の一実施の形態を示すピン部材を部分的に破断して表わした正面図である。
【図４】図３のＩＶ−ＩＶ線断面図である。
【図５】図３のＶ−Ｖ線断面図である。
【図６】図３のＶＩ−ＶＩ線断面図である。
【図７】図３のVII-VII 線断面図である。
【図８】図３のVIII-VIII 線断面図である。
【図９】本発明の一実施の形態を示すグロメットを部分的に破断して表わした正面図である。
【図１０】本発明の一実施の形態を示すグロメットの底面図である。
【図１１】図９のＸＩ−ＸＩ線断面図である。
【符号の説明】
１０…ピン部材
１１…頭部
１２…軸部
１５…係合部
１６…弾撥片
２０…グロメット
２１…頭部
２２…開口
２３…筒部
２５…スリット
２６…仮拘束部
２７…本拘束部[0001]
BACKGROUND OF THE INVENTION
In the present invention, the shaft portion of the pin member is inserted into the opening formed in the head of the grommet, and when the insertion is completed, the extending portion of the cylindrical portion continuously extending around the periphery of the opening is The present invention relates to a fastener in which a shaft portion of a pin member is expanded.
[0002]
[Prior art]
Examples of conventional fasteners include those disclosed in Japanese Utility Model Publication No. 1-35928.
That is, an opening is formed in the head of the grommet, a leg piece is suspended from the periphery of the opening, a pair of claws projecting to the outside is formed on the shaft portion of the pin, and the shaft portion of the pin is connected to the grommet. As it passes through the opening, one of the pair of claws gets over the periphery of the opening of the grommet, and the other of the pair of claws comes to engage with the periphery of the opening of the grommet. As a result, the grommet and the pin are temporarily assembled. In general, the grommet and the pin are transported in this temporarily assembled state, and the shaft portion of the pin is completely inserted to complete the assembly.
[0003]
[Problems to be solved by the invention]
However, in such a conventional fastener, the gap between the pair of claws is narrow, and depending on the force when inserting during temporary assembly, the pair of claws may both get over the periphery of the grommet opening. When the pair of claws get over both, for example, it is necessary to pull out the pin shaft part once and perform the temporary assembly work again, which is not good workability, while widening the gap between the pair of claws. As a result, the backlash between the grommets and the pins increases by the amount of the spread, and the temporary assembly state becomes uneven, and there is a problem that it is difficult to handle when assembling or transporting.
The present invention has been made paying attention to such conventional problems, and the temporary assembly work is easy, and the backlash between the pin member and the grommet is reduced in the temporary assembly state, and the variation in the temporary assembly state is reduced. And it aims at providing the fastener which can improve temporary assembly workability | operativity.
[0004]
[Means for Solving the Problems]
The gist of the present invention for achieving this object resides in the matters described in the following sections.
[1] The shaft portion (12) of the pin member (10) is inserted into the opening (22) opened in the head (21) of the grommet (20), and at the end of the insertion, the peripheral edge of the opening (22) The extending portion of the cylindrical portion (23) in which a slit (25) extending from the tip of the cylindrical wall (24) toward the head (21) is formed is connected to the pin member ( In the fastener that the shaft portion (12) of 10) is expanded,
At a temporary assembly position set within a half insertion range between the insertion initial position and the insertion end position of the pin member (10), the engaging portion (15) comes into contact and the pin member (10) is removed. A temporary restraint portion (26) formed at one end of the slit (25) to be regulated;
The base end abuts on the periphery of the opening (22) of the grommet (20) and elastically abuts on the cylindrical portion (23) from the shaft portion (12) , and the pin member (10) is engaged with the engaging portion. (15) and the temporary restraining portion (26) are urged in a contact direction, and the elastic repellent piece (16) holding the pin member (10) in the temporary assembly position;
A storage space (17) that is provided in one of the shaft portion (12) or the cylindrical portion (23) and that accommodates the elastic repellent piece (16) when the pin member (10) is further inserted from the temporary assembly position. ).
[0005]
[ 2 ] The elastic repellent piece (16) constitutes a corner (12a) of a shaft section (12) having a polygonal cross-section when stored in the storage space (17). 2. The fastener according to claim 1, wherein the corner portion (12a) is separated from the shaft portion (12) in an abutting and repelling state.
[0006]
[ 3 ] The engaging portion (15) is formed by projecting outward the corner portion (12a) of the polygonal cross-section shaft portion (12),
The cylindrical portion (23) has a cylindrical wall (24) having the same polygonal cross-section, which is inserted by the shaft section (12) having the polygonal cross-sectional shape, and a corner of the cylindrical wall (24) having the polygonal cross- section. to extend parallel to the axis of the shaft portion (12), the engagement portion 1 or 2, wherein the (15), characterized in that said slit (25) is formed to fit movably The described fastener.
[0007]
Next, the operation of the invention described in each item will be described.
In the fastener described in [1],
When the shaft portion (12) of the pin member (10) is inserted into the opening (22) of the grommet (20), the pin member (10) is urged by the elastic piece (16), and the engaging portion ( 15) and the temporary restraining portion (26) are easily moved in the abutting direction and held at the temporary assembly position. The operator simply inserts the pin member (10) to the vicinity of the temporary assembly position, and then the movement is automatically adjusted to the temporary assembly position by the elastic repellent piece (16). It can be done easily.
[0008]
In a state where the pin member (10) is held at the temporary assembly position, the backlash between the pin member (10) and the grommet (20) is small, and variations in the temporary assembly state can be reduced, and handling is easy. Can do.
[2] When the engagement portion (15) gets over the temporary restraint portion (26) at the temporary assembly position, the pin member (10) can move within the half insertion range. Before and after, the elastic repellent piece (16) provided on one of the shaft portion (12) or the cylindrical portion (23) elastically contacts the other of the shaft portion (12) or the cylindrical portion (23), and the pin The member (10) is urged in the pulling direction. As a result, the pin member (10) moves in the pulling direction within the half insertion range, and eventually the engaging portion (15) comes into contact with the temporary restraining portion (26) so that the pin member (10) cannot be removed temporarily. Held in the set position. That is, even if the pin member (10) passes through the temporary assembly position too much and is inserted, the pin member (10) returns to the temporary assembly position and is held at the temporary assembly position. It is only necessary to get over (26), and the temporary assembly work can be easily performed.
[0009]
Since the elastic repellent piece (16) urges the pin member (10) in the pulling direction, the space between the head (11) of the pin member (10) and the head (21) of the grommet (20) is sufficient. The head (11) of the pin member (10) is widened, even with the thick finger of the operator at the time of final assembly work on the body panel, the finger whose thickness has been increased by gloves such as gloves, and the manipulator of the automatic machine. And the neck portion of the pin member (10) can be securely gripped.
[0010]
In the fastener described in [3],
The elastic repellent piece (16) constitutes a corner (12a) of a shaft section (12) having a polygonal cross-section in the accommodated state accommodated in the accommodating space (17), and the elastically abutting elastically repelling pieces (16). Since the corner portion (12a) is separated from the shaft portion (12) in the repellent state, the cylindrical portion (23) through which the shaft portion (12) having a polygonal cross-section is inserted has a polygonal shape on the inner wall. What is necessary is just to form in cross-sectional shape, and it can be set as the shape which is easy to shape | mold.
[0011]
In the fastener described in [4],
The engaging portion (15) is formed by projecting outward a corner (12a) of the polygonal cross-section shaft portion (12), and the cylindrical portion (23) is the polygon cross-section shaft portion. (12) has a cylindrical wall (24) of the same polygonal cross-section to be inserted, and the cylindrical wall (24) extends parallel to the axis of the shaft (12), and the engaging portion (15) Since the temporary restraining part (26) is formed at one end of the slit (25), the pin member (10) and the grommet (20) The shaft portion (12) and the cylindrical portion (23) are each formed in a polygonal cross-sectional shape, and the engaging portion (15) is formed in the corner portion (12a) of the shaft portion (12). It is only necessary to form slits (25) corresponding to the engaging portions (15) at the corners of the cylindrical portion (23), and the pin member (10) and the grommet By preparative (20) is not complicated shapes, it is possible both to molded easily form.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
Each figure shows an embodiment of the present invention.
As shown in FIGS. 1 to 8, the fastener according to the present embodiment includes a pin member 10 and a grommet 20. The pin member 10 has a head portion 11 and a shaft portion 12, and a general portion of the shaft portion 12 is formed in a square cross-sectional shape as shown in FIG. Moreover, the neck part of the pin member 10 is shape | molded by the cross-shaped rib shape, as shown in FIG.
[0013]
An engaging portion 15 is formed on the shaft tip portion 14 of the pin member 10. As shown in FIG. 7, the engaging portion 15 is formed by projecting the four corner portions 12a of the shaft portion having a quadrangular cross section outward. As shown in FIGS. 3 and 6, the shaft tip portion 14 of the shaft portion 10 has a shaft diameter that gradually decreases from the engaging portion 15 toward the tip. As shown in FIG. 8, an elastic repelling piece 16 is provided between the shaft tip portion and the neck portion of the pin member 10. The elastic repellent piece 16 protrudes obliquely outward from the pair of corner portions 12a forming the diagonal of the shaft portion 12 by its elastic force, and when it is bent toward the axial center against the elastic force. The corner portion 12a of the shaft portion 12 having a quadrangular cross section is formed. In the corner portion 12 a of the shaft portion 12, a storage space 17 is formed corresponding to the pair of elastic repellent pieces 16 and is an accommodating recess for accommodating the elastic repellent pieces 16 when bent.
[0014]
As shown in FIGS. 1 to 3 and FIGS. 9 to 11, the grommet 20 has a head portion 21 and a cylindrical portion 23, and the shaft portion 12 of the pin member 10 is inserted into the head portion 21. The rectangular opening 22 is opened. The cylindrical portion 23 is formed so as to hang down continuously from the opening 22, and the cylindrical portion 23 is formed on a cylindrical wall 24 having a square cross-sectional shape like the shaft portion 12. As shown in FIGS. 9 and 11, slits 25 extending from the tip of the cylindrical wall 24 toward the head 21 are formed at the four corners of the cylindrical wall 24. Since the four slits 25 are formed, the cylindrical wall 24 is separated into four parts, and the distal ends of the separated cylindrical walls 24 are reduced in diameter, and the engaging portion 15 comes into contact with the pin member 10. This restricting portion 27 is restrained so that it cannot be removed at the insertion end position. In addition, a temporary restraining portion 26 is formed at one end, which is the back portion of the slit 25, so that the engaging portion 15 abuts and the pin member 10 cannot be pulled out and is restrained at the temporary assembly position.
The interval between the engagement portion 15 and the base end of the elastic repellent piece 16 is set wider than the interval between the temporary restraining portion 26 and the periphery of the opening 22.
[0015]
Next, the operation of the present embodiment will be described.
As the shaft portion 12 of the pin member 10 passes through the opening 22 of the grommet 20, the shaft tip portion 14 of the shaft portion 12 fits into the cylindrical wall 24 of the grommet 20, and eventually the engaging portion 15 of the shaft tip portion 14. Fits into the slit 25 and moves along the slit 25.
[0016]
When the engaging portion 15 of the shaft tip portion 14 moves along the slit 25, the base end of the elastic repelling piece 16 comes into contact with the peripheral edge of the opening 22 of the grommet 20, and the peripheral edge of the opening 22 resists the biasing force. Then, the elastic repellent piece 16 is pushed into the storage space 17 side.
[0017]
The shaft portion 12 of the pin member 10 is pushed back in the pulling direction by the urging force of the elastic repellent piece 16, and the engaging portion 15 of the shaft tip portion 14 moves in the reverse direction along the slit 25. Eventually, the shaft tip portion 14 is moved. The engaging portion 15 comes into contact with the temporary restraining portion 26 which is the back portion of the slit 25, and the shaft portion 12 of the pin member 10 is restrained to the temporary assembly position so that it cannot be removed.
[0018]
Even when the shaft portion 12 of the pin member 10 is inserted deeply into the cylindrical wall 24 of the grommet 20, the elastic repellent piece 16 is large and bends toward the storage space 17, and the urging force of the elastic repellent piece 16 is increased. The shaft portion 12 of the pin member 10 is pushed back in the withdrawal direction by the force, and is restrained at the temporary assembly position. Therefore, the shaft portion 12 of the pin member 10 is inserted into the cylindrical wall 24 of the grommet 20 and the adjustment is relatively slow. Thus, the temporary assembly of the pin member 10 and the grommet 20 can be easily performed. The pin member 10 and the grommet 20 are transported to the use site in a temporarily assembled state.
[0019]
If there is a case where the movement to the temporary assembly position is not completed within a short time during the temporary assembly work, the movement is repeated little by little while receiving vibration during the transportation, The engaging portion 15 comes into contact with the temporary restraining portion 26 which is the back portion of the slit 25, and further approaches toward the temporary assembly position.
At the site of use, the elastic repellent piece 16 urges the pin member 10 in the pulling direction, so that the pin member 10 returns to the vicinity of the temporary assembly position, whereby the head 11 of the pin member 10 and the grommet As a result, the distance between the head 20 and the head 21 is sufficiently wide. As a result, when the final assembly work to the vehicle body panel or the like, the operator's thick fingers, and fingers that have been increased in thickness by gloves such as work gloves, automatic machines Even with this manipulator, the head 11 of the pin member 10 and the neck of the pin member 10 can be securely gripped, and the workability is improved.
[0020]
When the pin member 10 is further inserted into the cylindrical wall 24 of the grommet 20 from the temporary assembly position, it is pushed by the peripheral edge of the opening 22 of the grommet 20, and the elastic repelling piece 16 is bent toward the storage space 17, and enters the storage space 17. The shaft portion 12 is accommodated and constitutes a corner portion of the shaft portion 12, and the shaft portion 12 has a generally rectangular cross-sectional shape and enters the opening 22 of the grommet 20.
The shaft tip portion 14 of the shaft portion 12 pushes the tip portions of the four slits 25 outward against the elastic force, and the gaps formed by the tip portions of the four slits 25 are widened. The shaft tip portion 14 of the shaft portion 12 is inserted. When the shaft tip portion 14 of the shaft portion 12 passes through the widened gap, the tip portions of the four slits 25 are restored, and the main restraining portion 27 of the slit 25 is elastically repelled by the engaging portion 15 of the shaft portion 12. The pin member 10 is constrained to the main assembly position.
[0021]
In the above-described embodiment, the pin member 10 and the grommet 20 are temporarily assembled and further assembled. However, in order to directly assemble the pin member 10 and the grommet 20 directly, the pin member 10 is used. Is passed through the opening 22 of the grommet 20, the respective tip portions of the four slits 25 are restored, and the main restraining portion 27 of the slit 25 is elastically engaged with the engaging portion 15 of the shaft portion 12, so that the pin member The pin member 10 may be pushed in until the 10 is constrained to the main assembly position.
[0022]
In the fastener according to the above embodiment, the elastic repellent piece 16 and the storage space 17 are provided on the pin member 10 side, but may be provided on the grommet 20 side.
[0023]
Further, the shaft member 12 of the pin member 10 is formed in a quadrangular cross-sectional shape, but it goes without saying that it may be formed in a pentagonal or hexagonal cross-sectional shape, and a pair of elastic repellent pieces 16 are provided. Although shown, the shaft member 12 of the pin member 10 may have three or more depending on the polygonal cross-sectional shape.
[0024]
【The invention's effect】
According to the fastener of the present invention, by inserting the shaft portion of the pin member into the opening of the grommet, but the pin member is movable within the semi-insertion range, Tamabachihen is Tamabachi brought into contact with the cylindrical portion The pin member is urged in the direction toward the temporary assembly position. At the temporary assembly position, the engagement portion comes into contact with the temporary restraint portion to restrict the movement of the pin member. In this state, the backlash between the pin member and the grommet is reduced, the variation in the temporary assembly state is reduced, and the temporary assembly workability can be improved.
Further, since the temporary restraint portion is formed at one end of the slit of the grommet tube wall, the pin is provided with an elastic repellent piece whose base end abuts against the opening periphery of the grommet and elastically abuts from the shaft portion to the tube portion. The structure that can be temporarily assembled can be simplified simply by providing the member.
[Brief description of the drawings]
FIG. 1 is a front view showing a fastener partially broken according to an embodiment of the present invention.
FIG. 2 is a front view of a fastener showing an embodiment of the present invention.
FIG. 3 is a front view showing a pin member partially broken and showing an embodiment of the present invention.
4 is a cross-sectional view taken along the line IV-IV in FIG. 3;
5 is a cross-sectional view taken along line VV in FIG.
6 is a cross-sectional view taken along the line VI-VI in FIG. 3;
7 is a cross-sectional view taken along line VII-VII in FIG.
8 is a cross-sectional view taken along line VIII-VIII in FIG.
FIG. 9 is a front view showing a grommet partially broken and showing an embodiment of the present invention.
FIG. 10 is a bottom view of a grommet showing an embodiment of the present invention.
11 is a cross-sectional view taken along line XI-XI in FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 ... Pin member 11 ... Head part 12 ... Shaft part 15 ... Engagement part 16 ... Repellent piece 20 ... Grommet 21 ... Head part 22 ... Opening 23 ... Tube part 25 ... Slit 26 ... Temporary restraint part 27 ... This restraint part

Claims

The shaft portion of the pin member is inserted into the opening formed in the head of the grommet, and when the insertion is completed, the shaft member extends continuously from the periphery of the opening and extends from the tip of the cylindrical wall toward the head side. In the fastener that the shaft portion of the pin member pushes and extends the extending portion of the cylindrical portion in which the slit is formed ,
At one end of the slit , the engagement portion abuts to restrict the pin member from coming off at a temporary assembly position set within a half insertion range between the insertion initial position and the insertion end position of the pin member. The formed temporary restraint part,
With proximal end abuts the periphery of the opening of the grommet Tamabachi brought into contact with from the shaft portion before Symbol cylindrical portion, said pin member and said engaging portion and the temporary restraining portion biases the abutting direction An elastic repellent piece for holding the pin member in the temporary assembly position;
A fastener provided in one of the shaft portion or the cylindrical portion, and a storage space for storing the elastic repellent piece when the pin member is further inserted from the temporary assembly position.

The elastic piece constitutes a corner portion of a polygonal cross-section shaft portion when housed in the housing space, and the corner portion is separated from the shaft portion in the resiliently repellent state in contact with the elastic body. The fastener according to claim 1.

The engaging portion is formed by projecting outward a corner portion of the shaft portion of the polygonal cross-sectional shape,
The cylindrical portion has a cylindrical wall having the same polygonal cross-sectional shape that is inserted by the shaft portion having the polygonal cross-sectional shape. The fastener according to claim 1 or 2, wherein the slit is formed so that the engaging portion is movably fitted.