JP3560061B2

JP3560061B2 - Stop

Info

Publication number: JP3560061B2
Application number: JP2002037010A
Authority: JP
Inventors: 尚広島尻
Original assignee: Nifco Inc
Current assignee: Nifco Inc
Priority date: 2002-02-14
Filing date: 2002-02-14
Publication date: 2004-09-02
Anticipated expiration: 2019-09-02
Also published as: JP2002303309A

Description

【０００１】
【産業上の利用分野】
本発明は、自動車や電気機器の内部に組付けられる部品類をボディや機器本体のパネル部分に止め付けたり、或いはこのパネル部分に他のパネルを接面状に止め付けるような場合に使用される合成樹脂を素材に成形される止め具に関する。
【０００２】
【従来の技術】
知られるように自動車や家電製品には部品を止め付ける合成樹脂製の止め具が多数使用されている。一般に止め具は止め付ける部品に従って様々な形態をなしているが、ボディや機器本体に対して部品類を止め付ける止め具は基本的にはパネルに穿つ取付けの透孔より大径な頭部と、この頭部から垂設され透孔に係入される係止脚を有したものとなっている。そして通常、頭部は単に鍔形をなすものもあれば、部品類を止め付ける特別な係止手段を有したものもあるが、共通しては係止脚を挿入したとき突き抜けないため透孔より大径に形成されているのが普通である。これに対し係止脚は透孔に押し込み透孔の縁に係止させるに過ぎないものであるが、その形態は様々である。特にこの形態は使用目的に応じて基本的に異なる。例えば永久的固着を目的としたものは抜き取り不能なものとして例えば錨形の係止片を有したものとなり、また部品の交換等を行うことを前提に使用される止め具は一旦透孔に係入した係止脚を引き抜き可能にするため例えば係止脚の胴部を縮径可能に膨出させ、透孔に対してはこの膨出部を圧接させてその摩擦力で係止させるものとなっている。
この様に、合成樹脂製の止め具は目的に応じて異なる形態をなすが、いずれの場合も素材の弾性や剛性、更には成形性等の特性を活かして製造されている。本発明はこれら各種提供されている止め具の中にあって前記後者の、特に胴部の弾性を利用して取付けの透孔に無理に押し込み、押し込んだのち反発力で透孔の縁に噛み付かせ摩擦力等を加味して抜け出ないようにした止め具、更にここでは挿入後必要ある場合に引き抜くことを可能にした止め具の係止脚の改善を目的に開発されたものである。
【０００３】
【発明が解決しようとする問題点】
即ち、係止脚の胴部の弾性を利用して係止させる構造の止め具は、素材の弾性に加えてパネルの透孔への挿入を容易にするため係止脚の内部を中空に形成しているものが多い。この中空にした係止脚は挿入時に中空部を利用して縮径させ、挿入時は縮径した胴部の復元によって透孔の縁に係止させるものであり、挿入性がよいことと、挿入後の復元力によって所要の係止力が得られることから多くの実用例がある。
【０００４】
しかし、この中空構造の係止脚は胴部の縮径、拡張作用に優れる反面、剛性に欠ける難点がある。即ち、中空に作られた係止脚はパネルの透孔に対してその中心に沿って真直に挿入される場合は全く問題がないが、挿入時に脚端が透孔の縁に触れて挿入されたり、或いは透孔の中心線を外れて斜めに挿入されたりすると、座屈状に折れ曲がり、或いは潰れて透孔への進入が果たされず係止機能を全く失ってしまうことがある。ことにこの問題は部品類を複数個の止め具を用いてパネルに止着する場合に起きる。例えば自動車の内張材としてのトリムボードをドアに対して止着する場合がその一例である。即ち、トリムボードの裏面側に複数個の止め具、つまりトリムクリップを所要の間隔で植設し、ドアに予め穿っておく取付け透孔にそれぞれのクリップを臨ませてこれらを挿入する際、トリムクリップの取付位置の誤差若しくは取付け透孔の開設位置の誤差によって位置ずれを生じたとき、透孔に係止されないクリップが出て不完全なトリムボードの取付が行われることがある。
【０００５】
このトリムクリップの場合に代表されるようにトリムボードの裏側にあって透孔への係入状態の確認が困難であるような場合、不完全な止着状態を事前に修正することが出来ず、そのまま製品の組立が完了してしまうことが多々ある。
本発明は、この様な事情に鑑み透孔に対して係止脚の進入位置に多少の誤差を生じても、係止脚の脚端、つまり先端が透孔の内部に臨んでいれば座屈状に折れ曲がったり、或いは潰れたりすることなく押込みを受けて正規に侵入し透孔に係止できるようにした止め具を提供せんとするものである。
【０００６】
【問題点を解決するための手段】
即ち、本発明は、頭部と、頭部の下面から垂設される係止脚とを有し、該係止脚をパネルの透孔に押し入れることによってパネルに止着されるようにした合成樹脂製の止め具にあって、前記係止脚は前記頭部の下面から真直に垂設され、中心部から外に向けて突き出す３若しくは４つの突片を有し、これら突片相互の間に所要の間隔を設けると共に、該突片の最外周部の描く仮想上の軸径が前記パネルの透孔の直径を超えないようにしてなる軸芯部と、前記軸芯部の前記突片間に配置され、且つ該突片との間に所要の間隔を保つと共に、各上端部を前記軸芯部の基部若しくは前記頭部の下面に接合し、また各下端部を前記軸芯部の脚端にそれぞれ接合して長さの途中を該軸芯部から離して空隙を設けると共にそれぞれ長さの途中の外側面に前記パネルの透孔の直径を超える大きさの膨出部を備えてなる複数個の弾性係止片とから構成され、前記パネルの透孔に対する係止時には前記軸芯部を前記透孔に押し込むのに伴わせて前記弾性係止片を縮径させて前記膨出部を前記パネルの透孔の縁に掛け止めるようにした止め具を提供することにある。
【０００７】
本発明止め具は軸芯部によって係止脚に所要の剛性を保持せしめ、取付の透孔に対する挿入性を図ると共に、この軸芯部に沿って一体に設ける弾性係止片によって透孔に対する係止力を確保し、止め付け状態を外れて係止脚先端が臨み、そのまま押圧されたとき上記軸芯部の誘導によって透孔への侵入を可能とし、折れ曲がり或いは押し潰しによる係入不能状態を回避するものであり、その一方、透孔への係入後は前記弾性係止片の透孔の縁に対する圧接作用によって係止状態を確保するようにしたことに特徴がある。
即ち、本発明止め具は従来の係止脚が単体によって構成され、この係止脚に押入時の剛直性と透孔に対する係止状態を確保する弾性との相反する２つの機能を同居させるのに対して、係止脚を軸芯部と弾性係止片とに分けて２つの機能を個別にしたことにある。
【０００８】
そして更に本発明は上記弾性係止片につき、これを軸芯部に対して長さの途中において所要の間隔を設け、その空隙を利用して縮径方向への撓みを可能にする一方、基端と先端を軸芯部に対して一体に接合して透孔に対する挿入性を図ると共に所要の引き抜き力を作用させたとき再び縮径して透孔から係止脚を破損することなく引き抜けるようにした止め具を提供することにある。
【０００９】
尚、上記軸芯部は一つの形状に特定されないが、挿入する透孔に対し軸径が透孔の直径を超えないことが条件となる。
この軸芯部は前述したように所要の剛性が求められると共に、挿入時透孔に対して真直に誘導すること、及びその周面に弾性係止片を効果的に配設する上から断面十字状或いはＴ字状、Ｙ字状等の柱状であることが適当である。更にこの断面形状のうち成形上の観点からみると成形金型の組合わせから十字形或いはＴ字形が適している。
【００１０】
他方、弾性係止片は軸芯部の長さ方向に沿って並設されると同時に長さの途中を外方に膨出させてその実質的外径を前記パネルの透孔の直径を超える大きさに形成される。
この弾性係止片は軸芯部を囲んで複数個もうけられるもので、軸芯部が前述の断面十字形をなし、或いはＴ字形をなす場合にはその外方に張り出す突片の間に位置するように配置し、軸芯部を囲ませると共に常には長さの途中を軸芯部から離して空隙を設けることになる。この状態において該弾性係止片は複数が集合することによって実質的外径を前記透孔の直径より大きくなるように形成することになる。
次に、この発明を図示する実施例につき説明し、その特徴とするところを明らかにする。
【００１１】
【実施例】
図示する実施例は本発明を自動車の内張材たるトリムボードの止め付け用クリップにつき実施した一例を示したものであり、図１から図５は第１の実施例を、そして図６から図１０は第２の実施例を示す。
図１は本発明の止め具たるトリムクリップを用いて自動車のドア内壁パネル部ＡにトリムボードＢを止着した使用状態を示す正面図で、図２は一部断面としたクリップの正面図、図３は一部断面とした側面図、図４は底面図、図５は図２のＡーＡ線に沿った横断平面図である。
【００１２】
本発明の止め具、即ちトリムクリップはポリアセタール等適度の弾性と剛性を有した熱可塑性の合成樹脂を材料に成形されるもので、頭部１と係止脚２を以て構成される。
頭部１はここではトリムボードＡに止着するための２段の鍔１ａ，１ｂからなっており、大径な円形の鍔１ａを主体にしてその上面中央部から頸部１ｃを立設し、これの上端に小径な円形の鍔１ｂを接合して間隔をおいて２段に構成してある。
【００１３】
一方、係止脚２はパネル部Ａに開設される取付用の円形の透孔ａに係入して前記頭部１をパネル面に止め付けるもので、頭部１の下面中央部から垂設される軸芯部２ａとこの軸芯部に並設される弾性係止片２ｂとから構成される。
この実施例における頭部１は係止脚２を透孔ａに係入したとき、この透孔ａを完全に覆い隠し、併せて係止脚の係合を補助するための傘形の弾性シール部３を大径な鍔１ａの下面に一体に有し、この弾性シール部３を介して軸芯部２ａと弾性係止片２ｂを延設している。
【００１４】
軸芯部２ａはここでは図５に示したように断面十字形をなす柱状に形成してあり、上記傘形のシール部３の中心部から垂直に派生するようにしてある。そして、この軸芯部２ａは外方に放射状に突き出す４つの突片４の各先端を結ぶ一つの仮想円、つまり軸芯部の実質的な外径が前記パネル部Ａに穿つ透孔ａの直径を超えない大きさに形成してあり、挿入に当たって直接軸径が挿入の抵抗にならないようにしてある。
【００１５】
弾性係止片２ｂは上記軸芯部２ａが十字形断面形に形成されることに対応させて突片４間に各１つ宛の弾性係止片が配置されるようにしてある。この各弾性係止片は上端部をここではシール部３の下面に接合させ、下端部を軸芯部２ａの先端部、つまり脚端に接合させて長さの途中において軸芯部２ａから離すようにして並設させてある。更に詳述すると、この実施例では図示するように前後方向の２つの突片の両側にシール部３の下面から軸芯部２ａの脚端に抜ける縦の切り割り５を設けて突片と弾性係止片とを劃し、その一方左右に突き出す突片の両側には長さの途中を縦に切り割り、下端部において弾性係止片の下端部が接合することで閉じられるスリット６により突片と弾性係止片が劃されるようにしてあり、これら切割り５とスリット６によって弾性係止片と突片との間に空隙が設けられるようにしてある。尚、ここで切割り５とスリット６の違いは成形上の理由によるもので、上記空隙の形成が主たる目的であり、形状は任意選択されるものである。
【００１６】
ところで、各弾性係止片２ｂは外側面をそれぞれ横断面円弧状に形成して４つの係止片の外周を繋ぐことによって一つの円が描けるようにしてある。そして、各弾性係止片は外側面の長さの途中に上下両側から徐々に***させて膨出部７を設け、この膨出部の頂点を繋ぐ最大径部が前記パネル部Ａの透孔ａの直径を超える大きさにしてある。
【００１７】
尚、弾性係止片２ｂの集合に係る最大径部は図５に示すように透孔ａの直径より小さい軸芯部２ａの実質外径より大きなものとなるが、この実施例ではこの径の差の分、つまり膨出部７の突き出し幅が切割り５、スリット６として形成される空隙に吸収され、この空隙を利用して弾性係止片全体が縮径するようになっている。
【００１８】
上記構成に係るクリップは前述したように合成樹脂を材料に一体に成形されるが、このクリップはトリムボードに先付けしてその後係止脚をパネルの透孔に挿入することで止着することになる。これを更に詳述すると、クリップはトリムボードの背面に形成する鍵穴形の係止穴ｂを有する取付部Ｃに頭部１側から臨ませ、先ず係止穴ｂの大径部に小径な鍔１ｂを突き入れ、次にその状態で横移動させて頭部全体を取付穴の小径部に移すことで取付部Ｃに対する取付が完了される。
【００１９】
図１はこの取付け状態を示しており、同様の方法によりトリムボードＢの背面に所要の間隔で多数設けられる取付部Ｃにそれぞれクリップを止着し、係止脚２を立設させる。そうしたのち、各取付部Ｃに対応させてドアのパネル部Ａに各形成する透孔ａにそれぞれの係止脚２の先端を臨ませ、ボードの表面側から頭部１を叩打して係入させる。このとき係止脚２は真直な軸芯部２ａを案内に透孔ａに突入し、伴わせて弾性係止片は透孔の縁で膨出部７の通過の際縮径し、これの通過後復元して係止状態を維持することになる。尚、この係止脚２の係入に当たって透孔への挿入性をよくするため脚端は倒円錐形、もしくは倒円錐台形状に形成するとよい。
【００２０】
次に、図６から図１０は係止脚２の軸芯部２ａを横断面Ｔ字形に形成し、この軸芯部２ａを囲むように３つの弾性係止片２ｂ，２ｃを配置し並設した第２の実施例である。
断面Ｔ字形の軸芯部２ａは外方に突き出す突片８の先端を結ぶ一つの円によって具体化される実質的な外径を前記パネル部Ａの透孔ａの直径より小さく形成することは第１の実施例と同じである。またこの軸芯部を囲んで配置される３つの弾性係止片２ｂ，２ｃの集まりによって形成される実質的外径が上記透孔ａの直径より大であることも第１の実施例と同じである。
【００２１】
３つの弾性係止片は上端部をそれぞれ傘形のシール部３の下面に接合させ、下端部を軸芯部２ａの脚端に接合させて一体化し、係止脚２を構成すると共に、軸芯部２ａとのスリット９，１０，１１を利用して内方に撓めるようにしてある。そして、各係止片は外側面を共に一つの円周に沿う円弧面に形成すると共に、上端及び下端から除々に***させて長さの途中に膨出部１２を設け、この部分において前記透孔ａの直径を超える最大径部を形成している。
【００２２】
上記第２の実施例に示したクリップは第１の実施例におけるものと全く同じ状態で使用される。勿論、トリムボードの取付けに際してはボードの背面に設ける取付部Ｃの鍵穴形の取付穴ｂに頭部１の小径な鍔１ｂを係止させて起立状に取付け、その後係止脚２をパネルＡの透孔ａに臨ませ、次にボードの表面を叩打若しくは押圧して突入させることで止着される。この止着において軸芯部２ａが案内となり、弾性係止片がその膨出部１２を透孔の縁に掛け止め係止状態を確保し、更にシール部３がパネル部の一面に接面し透孔を塞ぐと同時に弾性を作用させて上記係止状態を確実に、且つ安定させることになる。
【００２３】
以上、本発明止め具をトリムクリップについて具体化した実施例を基に詳述したが、本発明止め具は係止脚の中心部に真直な軸芯部があってこれが挿入時に透孔の中心に誘導するため多少の位置ずれがあっても挿入を可能にする一方、弾性係止片は膨出部を設けるにかかわらず、挿入時には剛直な軸芯部によって透孔に引き込まれることから押込みの途中で屈曲したり潰れたりすることなく係入が可能であり、上記膨出部を透孔内に導き入れ、その縁に確実に掛け止めることができる。
【００２４】
尚、実施例では頭部１について大小２つの鍔からなるものとしたが、単なる一つの鍔からなるものにしても、また鍔形の頭部の上面にフック等の係止手段を備えるようにしてもよく止め具の用途に従って任意設計することが可能である。
また、係止脚につき、実施例では十字形及びＴ字形断面の軸芯部について説明したが、Ｙ字形であってもよい。これらの断面形状は周囲に配置される弾性係止片を均一的に分散配置することと、軸芯部の強度を確保すること、そして弾性係止片の縮径時の後退空間を確保するため選択されたもので、その他の断面形状の選択を妨げるものではない。
なおまた、実施例では頭部下面にシール部３を設ける場合について説明したが、これを省略することは自由である。勿論その場合には弾性係止片の上端は頭部の下面に直接接合するか、軸芯部の基端に直接接合し離れないようにすることは言うまでもない。
【００２５】
【発明の効果】
以上説明の通り、本発明は止め具の係止脚を軸芯部と弾性係止片から構成し、軸芯部には剛性を、弾性係止片には弾性を付与して係止脚の機能を２分したことから挿入性に優れると同時に係止力に優れる利点がある。また挿入時に透孔に対して多少の位置ずれがあっても軸芯部の誘導性が作用するため座屈したり、或いは潰れるようなことがなく安定した係止状態が得られ、また不確実な係止状態を回避できる利点がある。
【図面の簡単な説明】
【図１】本発明の止め具をトリムクリップに実施して自動車のドアのパネル部にトリムボードを止着する場合につき示した使用状態を説明する正面図。
【図２】止め具の一部欠截した正面図。
【図３】止め具の左半を中央部で断面とした右側面図。
【図４】止め具の底面図。
【図５】図２のＡーＡ線に沿って断面とした平面図。
【図６】本発明の止め具をトリムクリップに実施した場合の他の実施例を示す一部欠截した正面図。
【図７】止め具の一部欠截した右側面図。
【図８】止め具の背面図。
【図９】止め具の底面図。
【図１０】図６のＢーＢ線に沿って断面とした平面図。
【符号の説明】
１頭部
２係止脚
２ａ軸芯部
２ｂ弾性係止片
４軸芯部の突片
７膨出部
Ａパネル
ａ透孔[0001]
[Industrial applications]
INDUSTRIAL APPLICABILITY The present invention is used when parts to be assembled inside an automobile or an electric device are fixed to a panel portion of a body or a device main body, or another panel is fixed to this panel portion in a face-to-face manner. The present invention relates to a stopper formed of a synthetic resin material.
[0002]
[Prior art]
2. Description of the Related Art As is well known, a large number of synthetic resin fasteners for fastening components are used in automobiles and home electric appliances. Generally, the fasteners have various forms according to the parts to be fastened, but the fasteners for fastening the parts to the body or equipment main body basically have a head with a larger diameter than the through hole for mounting on the panel. And a locking leg which is suspended from the head and engaged with the through hole. Usually, some heads are simply flange-shaped, while others have special locking means for fixing parts, but in common, they do not penetrate when the locking legs are inserted, so through holes Usually, it is formed with a larger diameter. On the other hand, the locking legs are simply pushed into the through holes and locked at the edges of the through holes, but the form is various. In particular, this form basically differs depending on the purpose of use. For example, those that are intended to be permanently fixed are those that cannot be pulled out and have, for example, anchor-shaped locking pieces, and the stoppers that are used on the premise of replacing parts etc. are once engaged with the through holes. In order to allow the inserted locking leg to be pulled out, for example, the trunk portion of the locking leg is swelled so as to be reduced in diameter, and the bulging portion is pressed against the through hole and locked by the frictional force. Has become.
As described above, the stopper made of a synthetic resin has a different form depending on the purpose, but in any case, the stopper is manufactured by utilizing characteristics such as elasticity and rigidity of the material, and further, moldability. According to the present invention, among the various types of stoppers provided, the latter, in particular, the elasticity of the trunk is used to forcibly push into the through-hole of the mounting, and then push and push the edge of the through-hole with a repulsive force. The stopper has been developed for the purpose of improving the locking leg of the stopper, which can be pulled out when necessary after insertion, in consideration of the frictional force or the like, and furthermore, here, can be pulled out if necessary after insertion.
[0003]
[Problems to be solved by the invention]
In other words, a stopper with a structure that locks using the elasticity of the trunk of the locking leg is formed with a hollow inside of the locking leg in order to facilitate insertion into the through hole of the panel in addition to the elasticity of the material. There are many things. The hollow locking leg is reduced in diameter using the hollow portion at the time of insertion, and is locked at the edge of the through hole by restoring the reduced body portion at the time of insertion, and it has good insertability, There are many practical examples because a required locking force can be obtained by a restoring force after insertion.
[0004]
However, while the locking leg of this hollow structure is excellent in reducing the diameter and expanding the trunk, it has a disadvantage in that it lacks rigidity. That is, there is no problem if the locking leg made in the hollow is inserted straight along the center of the through hole of the panel, but at the time of insertion, the leg end touches the edge of the through hole and is inserted. If it is inserted obliquely out of the center line of the through hole, it may bend in a buckle shape or be crushed, failing to enter the through hole and completely losing the locking function. In particular, this problem occurs when parts are fastened to the panel using a plurality of fasteners. For example, one example is a case where a trim board as a lining material of an automobile is fixed to a door. That is, when a plurality of stoppers, that is, trim clips are planted at required intervals on the back side of the trim board, and the clips are faced to mounting through holes previously drilled in the door, and these are inserted, trimming is performed. When a positional shift occurs due to an error in the mounting position of the clip or an error in the opening position of the mounting through-hole, a clip that is not locked by the through-hole may come out and an incomplete trim board mounting may be performed.
[0005]
When it is difficult to check the state of engagement with the through-hole on the back side of the trim board as typified by this trim clip, the incomplete fastening state cannot be corrected in advance. In many cases, the assembly of the product is completed as it is.
In view of such circumstances, even if a slight error occurs in the entry position of the locking leg with respect to the through-hole in view of such circumstances, if the leg end of the locking leg, that is, the front end, faces the inside of the through-hole, the seat can be seated. It is an object of the present invention to provide a stopper capable of receiving a push-in without buckling or being crushed to form a proper intrusion and lock the through-hole.
[0006]
[Means for solving the problem]
That is, the present invention has a head and a locking leg that is suspended from the lower surface of the head, and is fixed to the panel by pushing the locking leg into a through hole of the panel. in the synthetic resin stopper, the locking Tomeashi are vertically straight from the lower surface of the head, from the center has three or four projecting pieces projecting toward the outside, these projecting pieces mutually provided with a required interval between the axial core portion axis diameter on the virtual drawn by the outermost circumferential portion of the projecting piece ing not exceed the diameter of the through hole of the panel, the said axial portion is placed between the protruding pieces, and with keeping the required interval between the projecting pieces, each upper end portion joined to the lower surface of the base or the head of the axial core portion and a respective lower end the before the middle of the length by joining the respective leg ends of the shaft portion on the outer surface of the middle of each length with kicking setting the air gap away from the axial center Is composed of a plurality of elastic locking piece formed comprises a magnitude bulging portion of which exceeds the diameter of the through hole of the panel, at the time of engagement with respect to the through hole of the panel Push the axial core portion in the through hole by accompanied Takeno is to provide a stop for the bulging portion reduced in diameter of the elastic locking pieces was stopped Mel so over the edge of the through-hole of said panel.
[0007]
In the stopper of the present invention, the locking leg holds the required rigidity by means of the shaft core portion, thereby facilitating the insertion of the mounting leg into the through hole, and the elastic locking piece integrally provided along the shaft core portion engages with the through hole. The stopping force is secured, the leading end of the locking leg comes out of the fastening state, and when pressed as it is, it is possible to enter the through hole by guiding the shaft core part, and it becomes impossible to engage due to bending or crushing. On the other hand, it is characterized in that, after engaging in the through hole, the elastic locking piece secures the locked state by a pressing action against the edge of the through hole.
That is, in the stopper of the present invention, the conventional locking leg is constituted by a single body, and the locking leg has two opposing functions of rigidity at the time of insertion and elasticity for securing the locking state with respect to the through hole. On the other hand, the locking leg is divided into a shaft core portion and an elastic locking piece to separate the two functions.
[0008]
Further, according to the present invention, the elastic locking piece is provided with a required interval in the middle of the length with respect to the shaft core, and the elastic locking piece can be flexed in the diameter-reducing direction by utilizing the gap. The end and the tip are integrally joined to the shaft core for easy insertion into the through hole, and when a required pulling force is applied, the diameter is reduced again and the locking leg is pulled out from the through hole without breaking. It is an object of the present invention to provide a fastener.
[0009]
The shaft core is not limited to one shape, but the condition is that the shaft diameter does not exceed the diameter of the through hole to be inserted.
This shaft core is required to have the required rigidity as described above, and must be guided straight into the through-hole at the time of insertion, and the cross-section should be cross-sectioned from the viewpoint of effectively disposing the elastic locking pieces on the peripheral surface thereof. It is appropriate that the shape is a column shape such as a T-shape or a Y-shape. Further, from the viewpoint of molding, a cross shape or a T-shape is suitable from the viewpoint of molding.
[0010]
On the other hand, the elastic locking pieces are juxtaposed along the length direction of the shaft core portion, and at the same time, bulge outward in the middle of the length to exceed the substantial outer diameter of the through hole of the panel. It is formed in size.
A plurality of the elastic locking pieces are provided around the shaft core portion, and when the shaft core portion has the above-mentioned cross-shaped cross section, or when it has a T-shape, between the protruding pieces protruding outward. It is arranged so as to be positioned so as to surround the shaft core portion, and a gap is always provided at a position in the middle of the length away from the shaft core portion. In this state, the plurality of elastic locking pieces are formed so that a plurality of the elastic locking pieces have a substantially outer diameter larger than the diameter of the through hole.
Next, embodiments of the present invention will be described with reference to the drawings, and features of the embodiments will be clarified.
[0011]
【Example】
The illustrated embodiment shows an example in which the present invention is applied to a clip for fastening a trim board as a lining material of an automobile. FIGS. 1 to 5 show the first embodiment, and FIGS. 10 shows a second embodiment.
FIG. 1 is a front view showing a use state in which a trim board B is fastened to a door inner wall panel portion A of an automobile using a trim clip serving as a stopper according to the present invention. FIG. 3 is a side view showing a partial cross section, FIG. 4 is a bottom view, and FIG. 5 is a cross-sectional plan view taken along line AA of FIG.
[0012]
The stopper of the present invention, that is, the trim clip is made of a thermoplastic synthetic resin having appropriate elasticity and rigidity, such as polyacetal, and is made up of a head 1 and locking legs 2.
Here, the head 1 is composed of two steps of flanges 1a and 1b for fastening to the trim board A. A neck 1c is erected from the center of the upper surface of a large-diameter circular flange 1a as a main body. A small-diameter circular flange 1b is joined to the upper end of the flange to form two steps at an interval.
[0013]
On the other hand, the locking leg 2 is engaged with the mounting circular through hole a formed in the panel portion A to fix the head portion 1 to the panel surface. And a resilient locking piece 2b arranged in parallel with the shaft core.
In this embodiment, the head 1 completely covers and covers the through hole a when the locking leg 2 is engaged with the through hole a, and also has an umbrella-shaped elastic seal for assisting the engagement of the locking leg. The portion 3 is integrally provided on the lower surface of the large-diameter flange 1a, and the shaft core portion 2a and the elastic locking piece 2b extend through the elastic seal portion 3.
[0014]
Here, the shaft core 2a is formed in a columnar shape having a cross-shaped cross section as shown in FIG. 5, and is derived vertically from the center of the umbrella-shaped seal portion 3. The shaft core 2a is one virtual circle connecting the tips of the four protruding pieces 4 projecting radially outward, that is, the through hole a formed in the panel portion A with a substantial outer diameter of the shaft core. It is formed so as not to exceed the diameter, so that the shaft diameter does not directly become an insertion resistance when inserting.
[0015]
The elastic locking pieces 2b are arranged such that each one of the elastic locking pieces is disposed between the protruding pieces 4 in correspondence with the shaft core 2a being formed in a cross-sectional shape. The upper end of each of the elastic locking pieces is joined to the lower surface of the seal portion 3 and the lower end is joined to the tip of the shaft core 2a, that is, the leg end, and is separated from the shaft core 2a in the middle of the length. It is juxtaposed. More specifically, in this embodiment, as shown in the figure, on both sides of the two projecting pieces in the front-rear direction, vertical cuts 5 are provided on both sides of the sealing part 3 so as to pass through the leg ends of the shaft core part 2a to elastically engage the projecting pieces. A half of the length is cut vertically on both sides of the protruding piece protruding left and right, and the lower end of the elastic locking piece is joined at the lower end by a slit 6 to be closed. An elastic locking piece is formed so that a gap is provided between the elastic locking piece and the protruding piece by the slit 5 and the slit 6. Here, the difference between the slit 5 and the slit 6 is due to molding reasons, the main purpose of which is to form the gap, and the shape is arbitrarily selected.
[0016]
By the way, each of the elastic locking pieces 2b has an outer surface formed in an arc shape in a transverse cross section, and a single circle can be drawn by connecting the outer circumferences of the four locking pieces. Each elastic locking piece is gradually raised from the upper and lower sides in the middle of the length of the outer surface to provide a bulging portion 7, and a maximum diameter portion connecting the apex of the bulging portion is a through hole of the panel portion A. The size exceeds the diameter of a.
[0017]
Note that the maximum diameter portion of the set of the elastic locking pieces 2b is larger than the substantial outer diameter of the shaft core portion 2a smaller than the diameter of the through hole a as shown in FIG. The difference, that is, the protrusion width of the bulging portion 7 is absorbed by the gap formed as the slit 5 and the slit 6, and the entire elastic locking piece is reduced in diameter by utilizing this gap.
[0018]
As described above, the clip according to the above configuration is integrally formed of a synthetic resin material, but this clip is attached to a trim board, and then the locking legs are inserted into the through holes of the panel to be fixed. Become. More specifically, the clip faces the mounting portion C having the keyhole-shaped locking hole b formed on the rear surface of the trim board from the head 1 side, and first, the large-diameter portion of the locking hole b has a small-diameter flange. 1b, and then laterally moved in this state to move the entire head to the small-diameter portion of the mounting hole, whereby the mounting to the mounting portion C is completed.
[0019]
FIG. 1 shows this mounting state. In the same manner, clips are fastened to a large number of mounting portions C provided on the rear surface of the trim board B at required intervals, and the locking legs 2 are erected. After that, the front ends of the locking legs 2 are made to face the through holes a formed in the panel portion A of the door corresponding to the respective mounting portions C, and the head 1 is hit from the surface side of the board to engage. Let it. At this time, the locking leg 2 protrudes into the through hole a with the straight shaft core portion 2a as a guide, and the elastic locking piece is reduced in diameter at the edge of the through hole at the time of passing through the bulging portion 7. After passing, it is restored and the locked state is maintained. In order to facilitate the insertion of the locking leg 2 into the through hole when the locking leg 2 is engaged, the leg end may be formed in an inverted cone shape or an inverted cone shape.
[0020]
Next, FIGS. 6 to 10 show that the shaft core 2a of the locking leg 2 is formed in a T-shaped cross section, and three elastic locking pieces 2b, 2c are arranged side by side so as to surround the shaft core 2a. This is the second embodiment.
The shaft core portion 2a having a T-shaped cross section may have a substantial outer diameter embodied by a single circle connecting the tips of the projecting pieces 8 projecting outwardly smaller than the diameter of the through hole a of the panel portion A. This is the same as the first embodiment. Further, it is also the same as the first embodiment that the substantial outer diameter formed by the gathering of the three elastic locking pieces 2b and 2c disposed around the shaft core is larger than the diameter of the through hole a. It is.
[0021]
The upper ends of the three elastic locking pieces are joined to the lower surface of the umbrella-shaped seal portion 3, and the lower ends are joined to the leg ends of the shaft core 2 a to form the locking legs 2. Slits 9, 10, 11 with the core 2a are used to bend inward. Each of the locking pieces has an outer surface formed into an arc surface along one circumference, and is gradually raised from an upper end and a lower end to provide a bulging portion 12 in the middle of the length. A maximum diameter portion exceeding the diameter of the hole a is formed.
[0022]
The clip shown in the second embodiment is used in exactly the same state as in the first embodiment. Of course, when mounting the trim board, the small-diameter flange 1b of the head 1 is locked in the keyhole-shaped mounting hole b of the mounting portion C provided on the back of the board, and the trim board is mounted upright. Then, the surface of the board is fixed by hitting or pressing the surface of the board. In this fastening, the shaft core portion 2a serves as a guide, the elastic locking piece locks the bulging portion 12 on the edge of the through hole to secure the locking state, and the seal portion 3 comes into contact with one surface of the panel portion. At the same time that the through hole is closed, elasticity acts to stably and stabilize the above-mentioned locked state.
[0023]
In the above, the stopper of the present invention has been described in detail based on the embodiment in which the trim clip is embodied. However, the stopper of the present invention has a straight shaft core at the center of the locking leg, and this is the center of the through hole at the time of insertion. The elastic locking piece is inserted into the through hole by the rigid shaft core at the time of insertion, regardless of the presence of the swelling part, so that it can be inserted even if there is some displacement. Engagement is possible without being bent or crushed on the way, and the bulging portion can be guided into the through hole and securely hooked to the edge thereof.
[0024]
In the embodiment, the head 1 is composed of two flanges, large and small. However, even if the head 1 is composed of only one flange, a locking means such as a hook is provided on the upper surface of the flange-shaped head. Any design can be made according to the use of the fastener.
Further, in the embodiment, the shaft legs having the cross shape and the T-shaped cross section have been described for the locking legs, but the locking legs may be formed in a Y shape. These cross-sectional shapes are used to uniformly disperse the elastic locking pieces disposed around, secure the strength of the shaft core, and secure a retreat space when the diameter of the elastic locking pieces is reduced. It is selected and does not prevent selection of other cross-sectional shapes.
Further, in the embodiment, the case where the seal portion 3 is provided on the lower surface of the head has been described, but this can be omitted freely. Of course, in this case, it goes without saying that the upper end of the elastic locking piece is directly joined to the lower surface of the head or directly joined to the base end of the shaft core so as not to be separated.
[0025]
【The invention's effect】
As described above, according to the present invention, the locking leg of the stopper is constituted by the shaft core and the elastic locking piece, and the shaft core is provided with rigidity, and the elastic locking piece is provided with elasticity so that the locking leg is provided. Since the function is divided into two, there is an advantage that the insertion property is excellent and the locking force is also excellent. Also, even if there is a slight displacement with respect to the through hole at the time of insertion, the guideability of the shaft core acts, so that a stable locking state is obtained without buckling or crushing, and uncertainty There is an advantage that the locked state can be avoided.
[Brief description of the drawings]
FIG. 1 is a front view for explaining a use state shown in a case where a fastener of the present invention is applied to a trim clip to fasten a trim board to a panel portion of an automobile door.
FIG. 2 is a front view of the stopper with a part cut away.
FIG. 3 is a right side view in which the left half of the stopper is a cross section at the center.
FIG. 4 is a bottom view of the stopper.
FIG. 5 is a plan view of a section taken along line AA of FIG. 2;
FIG. 6 is a partially cut away front view showing another embodiment in which the clip of the present invention is applied to a trim clip.
FIG. 7 is a right side view of the stopper with a part cut away.
FIG. 8 is a rear view of the stopper.
FIG. 9 is a bottom view of the stopper.
FIG. 10 is a plan view of a section taken along line BB of FIG. 6;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Head 2 Locking leg 2a Shaft core 2b Elastic locking piece 4 Shaft core protruding piece 7 Swelling part A Panel a Through hole

Claims

頭部と、頭部の下面から垂設される係止脚とを有し、該係止脚をパネルの透孔に押し入れることによってパネルに止着されるようにした合成樹脂製の止め具にあって、
前記係止脚は前記頭部の下面から真直に垂設され、中心部から外に向けて突き出す３若しくは４つの突片を有し、これら突片相互の間に所要の間隔を設けると共に、該突片の最外周部の描く仮想上の軸径が前記パネルの透孔の直径を超えないようにしてなる軸芯部と、前記軸芯部の前記突片間に配置され、且つ該突片との間に所要の間隔を保つと共に、各上端部を前記軸芯部の基部若しくは前記頭部の下面に接合し、また各下端部を前記軸芯部の脚端にそれぞれ接合して長さの途中を該軸芯部から離して空隙を設けると共にそれぞれ長さの途中の外側面に前記パネルの透孔の直径を超える大きさの膨出部を備えてなる複数個の弾性係止片とから構成され、前記パネルの透孔に対する係止時には前記軸芯部を前記透孔に押し込むのに伴わせて前記弾性係止片を縮径させて前記膨出部を前記パネルの透孔の縁に掛け止めるようにした止め具。A synthetic resin stopper having a head and a locking leg vertically provided from a lower surface of the head, wherein the locking leg is fixed to the panel by pushing the locking leg into a through hole of the panel. In
The locking leg has three or four protruding pieces protruding outward from a central portion, and is provided vertically from the lower surface of the head. A shaft core portion such that an imaginary shaft diameter drawn by the outermost peripheral portion of the projection does not exceed the diameter of the through hole of the panel, and the projection piece disposed between the projection pieces of the shaft core portion; While maintaining a required distance between the upper end and the lower end of the shaft core portion or the base of the shaft core, and the lower end of the shaft core portion with a leg end. A plurality of elastic locking pieces each having a bulge having a size larger than the diameter of the through-hole of the panel on the outer surface in the middle of the length, while providing a gap in the middle of the shaft core part. When the panel is locked to the through hole, the panel core is pushed forward into the through hole when the panel is pressed into the through hole. Stop which is adapted hooking the edge of the through-hole of said panel said bulging portion reduced in diameter the elastic latching pieces.

請求項１の記載において、軸芯部は横断面形を十字形に形成して外方に放射状に突き出す４つの突片から構成し、該各突片相互の間に弾性係止片を配置するようにしたことを特徴とする止め具。In the first aspect, the shaft core portion is formed of four projections projecting radially outward with a cross-sectional shape formed in a cross shape, and an elastic locking piece is disposed between the projections. A fastener characterized by having been made as described above.

請求項１の記載において、軸芯部は横断面形をＴ字形乃至Ｙ字形に形成して外方に突き出す突片から構成し、該各突片相互の間に弾性係止片を各配置するようにしたことを特徴とする止め具。In the first aspect of the present invention, the shaft core portion is formed of a protruding piece having a T-shaped or Y-shaped cross section and protruding outward, and elastic locking pieces are arranged between the protruding pieces. A fastener characterized by having been made as described above.