JP4376984B2

JP4376984B2 - Stud lock

Info

Publication number: JP4376984B2
Application number: JP19159698A
Authority: JP
Inventors: 秀樹蟹江
Original assignee: Nippon Pop Rivets and Fasteners Ltd
Current assignee: Nippon Pop Rivets and Fasteners Ltd
Priority date: 1998-07-07
Filing date: 1998-07-07
Publication date: 2009-12-02
Anticipated expiration: 2018-07-07
Also published as: JP2000027833A

Description

【０００１】
【産業上の利用分野】
本発明は、パネル等の被取付部材に立設されたスタッドを利用して、被取付部材に他の取付部材を取付けるのに適したスタッド係止具に関する。
【０００２】
【従来の技術】
ねじ又は周溝が形成されたスタッドがパネルから上方に延びて、そのスタッドを利用して他の取付部材を取付けるスタッド係止具は、公知である。かかる公知のスタッド係止具は、スタッドを受入れる穴を有する筒状部と、スタッドのねじ又は周溝に係止するように穴の中心に向けて延び出す複数の係止爪とを有し、上方に延びるスタッドを、筒状部の穴に受入れるように筒状部を押し込むと、各係止爪がスタッドのねじに係止して、簡単にパネルに他の部材を取付けることができる。かかるスタッド係止具を多用する自動車のボデーパネルにおいて、スタッドの外径は、車種によって異なることが多く、そのスタッドの外径に合わせて、スタッド係止具を種々用意しなければならないという課題があった。すなわち、小径のスタッドの場合に、大径スタッドに適した穴を有する係止具を用いると、係止爪の係止が不完全になり、締結力が不足し、更には締結が外れてしまう。また、大径スタッドに小径用の係止具を使用すると、係止具を押し込む時の締結荷重が高く、作業者への負担が大きくなり、係止具を破損する惧れもある。そのため、どうしても、係止具の種類が多くなっていた。
【０００３】
【発明が解決しようとする課題】
そこで、本願出願人らは、異なる直径のスタッドであっても、十分な締結力を維持し且つ低い荷重で締結することのできる、共用可能なスタッド係止具を既に提案している（特願平９−２４０５４１号）。このスタッド係止具は、係止爪の先端部を幅広に形成し、係止爪の根元部を狭幅に形成し、係止爪とは周方向において違う位置においてスタッドの側面に当接して穴の中心とスタッドの軸心とを一致させる弾性片を有している。このスタッド係止具は、小径のスタッドは勿論のこと、大径のスタッドであっても係止具をスタッドに締結するための押し込みに要する力すなわち締結荷重は小さくて済み、しかも、係止力を高く維持しており、締結力が高いまま維持される。しかし、このスタッド係止具においても、改良の余地が残されている。このスタッド係止具において、係止爪とは周方向において違う位置においてスタッドの側面に当接して穴の中心とスタッドの軸心とを一致させる弾性片の形状が、やや複雑になっており、弾性片の成形のための型が複雑になっていた。
【０００４】
従って、本発明の目的は、異なる直径のスタッドであっても、十分な締結力を維持し且つ低い荷重で締結することができ、型成形の容易なスタッド係止具を提供することにある。
【０００５】
【課題を解決する手段】
かかる目的を達成するため、本発明によれば、外面にねじ又は周溝が形成されたスタッドを受入れる穴を有する軸部と、前記ねじ又は周溝に係止するように穴の中心に向けて延び出す係止爪とを有し、パネル等の被取付部材から上方に延びる前記スタッドを前記穴に受入れるように軸部を押し込むと、前記係止爪がスタッドのねじ又は周溝に係止して、前記被取付部材に固定されるスタッド係止具であって、前記軸部の穴は、異なる直径のスタッドのうち最大直径のスタッドを受入れる大きさに形成され、前記係止爪は、前記スタッドを受入れるスタッド入口部からスタッドの挿入方向に、前記異径のスタッドのうち最小直径のスタッドのねじ又は周溝にも係止できるように穴の中心に向けて延びており、前記軸部は、前記スタッドの直径方向に対向する側面を弾性的に押圧する形状で前記スタッド入口部から軸心方向に沿ってつながって延びる細長い板状の、一対の対向する弾性片によって構成されており、各弾性片は、前記スタッド入口部において前記最大直径のスタッドを受入れる大きさの間隔で相互に離隔しており、前記係止爪より前記スタッド先端側にある部分が、前記穴の中心と該穴に受入れられたスタッドの軸心とを合わせるように、前記スタッド入口部の部分の間隔より相互に接近する形状であり、該一対の対向する弾性片は、前記接近した部分において前記スタッドの直径方向に対向する側面を弾性的に押圧することを特徴とするスタッド係止具が提供される。
【０００６】
【作用】
本発明の係止具によれば、弾性片は係止爪より上方すなわち軸心方向において離れた位置に且つ板状に形成されているので、成形の容易な形状で且つ位置にあり、弾性片の型成形が容易であるだけでなく、係止爪には弾性片が隣接しないので係止爪の成形も容易になり、しかも、係止爪も弾性片も低い反力で半径方向外方に撓むように成形でき、小径のスタッドは勿論のこと、大径のスタッドであっても係止具をスタッドに締結するための押し込みに要する力すなわち締結荷重は小さくて済み、更に、小径のスタッドであっても、係止爪はスタッドのねじ又は周溝に均一に係止してその係止力を十分に発揮して、締結力が高いままに維持される。
【０００７】
本発明において、弾性片をスタッドの直径方向に対向する側面を押圧するように一対設けることができる。また、弾性片は、周方向に３つ以上設けることもできる。弾性片の上端を、スタッドの上方部分を受入れるスタッド受入部に連結することができる。これによって、弾性片の上部側端部の固定を確実にできる。各弾性片の中間部にはスタッドの側面に係合するように突出する突起を設けることができ、これによって、スタッドへの係止力を高くできる。係止爪を、先端側の強度を維持し且つ半径方向外方へ容易に撓み変形するように、先端側が幅広に且つ根元部が狭幅に形成して、スタッドへの押し込みに要する力すなわち締結荷重が小さくて済む。スタッド係止具は、軸部の下端側に、他の取付部品を押圧するフランジを形成し、該軸部をスタッドに押圧することによって、該他の取付部品を被取付部材に取付けるスタッド係止具とすることができる。また、スタッド係止具は、軸部の下端側には、他の取付部品の一方の面を押圧するフランジを形成され、弾性片の上端を、パンタグラフ形状の頭部に連結し、該パンタグラフ形状の頭部を折り畳むことによって他の取付部品の他方の面が押圧されて、該他の取付部材にその両面を挟持するように取付けられるスタッド係止具とすることもできる。
【０００８】
【発明の実施の形態】
以下、本発明の第１実施例となるスタッド係止具１について、図１〜図７を参照して説明する。図１はスタッド係止具１の平面図、図２はスタッド係止具１の正面図、図３はスタッド係止具１の側面図、図４は図２のスタッド係止具１のＡ−Ａ線断面図、図５は図１のスタッド係止具１のＢ−Ｂ線断面図、図６はスタッド係止具１によって被取付部材としてのパネル２から上方に延びる大径のスタッド３に別の取付部材５を固定した様子を示す図、図７は、パネル２から上方に延びる小径のスタッド６に取付部材５を固定した様子を示す図である。スタッドには、周知のように、外面にねじ又は周溝が形成されている。また、スタッドは、パネル２から上方に延びるようにパネル２に立設されている。パネル２の向きによっては、スタッドの向きも変わることは了解されたい。本書では、説明の便宜上、スタッドはパネル２から上方に延びるものとして説明する。
【０００９】
図１〜図５において、本発明の第１実施例に係るスタッド係止具１は、プラスチックの一体成形品で成り、スタッドを受入れる穴を有する軸部７と、軸部７の下端側に形成されたフランジ９と、軸部７からスタッドのねじ又は周溝に係止するように穴の中心に向けて延び出す係止爪１０とを有する。そして、軸部７の穴１１は、異なる直径のスタッドのうち最大直径のスタッド（例えば、図６の大径スタッド３）を受入れる大きさに形成される。また、係止爪１０は、スタッドの側面に直径方向に対向する位置で係合するように、対向した一対の係止爪として形成されており、その先端は、最小直径のスタッドのねじ又は周溝にも係止できるように穴の中心に向けて延びている。軸部７は、その上方の一対の弾性片１３と、弾性片１３の先端が連結される円筒状のスタッド受入部１４とを有する。スタッド受入部１４は、弾性片１３の上端部を固定して、弾性片１３の強度を一定に保つとともに、受入れたスタッドに対して、スタッド係止具１を安定に取付ける機能を有する。スタッド受入部１４は、大径のスタッド３を受入れる大きさの受入穴を有する円筒の形状に形成されている。
【００１０】
弾性片１３は、スタッドの側面に直径方向に対向する位置で係合するように、対向した一対の細長い板状の弾性片で成る。そして、各弾性片１３は、軸部７の係止爪１０の先端よりスタッド先端側にある部分（すなわち、スタッドを受入れる方向にみて、係止爪１０の先端から、スタッド入口部とは反対側の部分）において、軸部７の穴１１の中心と該穴に受入れられたスタッドの軸心とを合わせるように、スタッドの側面を弾性的に押圧する形状に形成されている。図示の例において、各弾性片１３は、全体として薄い板ばね状の板状体に形成され、下部及び上部は大径のスタッド３を容易に受入れる間隔をもって相互に離隔しているが、その中間部においては、小径のスタッド６の側面をも弾性的に当接できるように相互に接近して、当接部１５を形成している。この当接部１５は、スタッドが軸部に挿通されるとスタッド側面に当接してそのスタッドの外径に従って半径方向外側に撓められ、その反力によって、スタッド係止具１を、軸部７の穴１１の軸心がスタッドの軸心に合うように姿勢を保ち、各弾性片１３は、また、スタッドに摩擦係合して、小径スタッドの場合のぐらつきを防止する。なお、弾性片１３の数は、スタッド係止具１を、軸部穴１１の軸心がスタッドの軸心に合うように姿勢を保つようにする限り、任意の数にできる。
【００１１】
なお、図５の円Ｃに示す、弾性片１３の当接部１５において、円Ｄに示すように、スタッドの側面に係合するように突出する突起１７を設けることができる。この突起１７によってスタッドへの係止力を向上できる。スタッドへの主たる係止力は係止爪１０によって得られるので、係止力を向上させるため、図５に示すように、各係止爪１０の幅ａを広くするのがよい。この幅ａは、弾性片１３が係止爪１０から離隔しているので、特願平９−２４０５４１号のスタッド係止具の係止爪より相当に広くできる。このように、幅ａを広くすることができるので、係止爪１０の厚さｂ（図５）を必要十分に薄くすることができ、図５の円Ｅに示す従来の厚い係止爪１８と同様の、高い係止力を維持することができる。係止爪１０の厚さを薄く形成できることによって、スタッドへの押し込みの力は従来の厚い係止爪１８より相当に低くでき、係止操作が容易に且つ確実にできる。更に、この押し込み力の軽減をするため、図５の円Ｆに示す係止爪１０は、図５の円Ｇに示す係止爪１９のように、先端側を広幅（幅ａ）に且つ根元部を狭幅（幅ｄ）に形成してもよく、これによって、先端側の係止強度を維持し且つ半径方向外方へ容易に撓み変形して、スタッドへの押し込み力を低くできる。また、各係止爪１３の先端の高さ位置は、図４に示すように、ねじスタッドのねじの半ピッチ分（ｅ）ずらしてあり、これによっても、係止力を高く維持できる。また、係止爪１３の数も一対に限らず任意にできる。
【００１２】
図６及び図７には、以上の構成で成るスタッド係止具１を用いて、被取付部材としてのパネル２に取付部材５を取付けた様子が示されている。図６において、パネル２には、大径スタッド３が溶接によってパネル上方に向けて立設されている。パネル２に取付部材５を取付けるには、取付部材５を、その取付穴２１に大径スタッド３が貫通するように位置決めし、次に、スタッド係止具１を、スタッド３を穴１１に受入れるように押し込む。この押し込みにおいて、各係止爪１３の先端は、大径スタッド３のねじ山に順々に係合しながら押下げられ、また、弾性片１３はその当接部１５が、大径スタッド３によって半径方向外側に撓められて、その反力によってスタッド係止具軸部７の穴１５の軸心をスタッド３の軸心に合わせてスタッド係止具を適正な姿勢に保った状態で押し込みが行われる。最終的には、フランジ９が取付部材３を押圧して取付部材３がパネル２に取付けられる。この場合、弾性片１３によって、軸部穴１１の中心とスタッド３の中心とが一致しているため、各係止爪１０のねじへの係止力が一様に作用して高い係止力を維持する。この係止力に対抗して、スタッド係止具１に抜き荷重が加わっても、係止爪１０の係止力が高いので、スタッド係止具１を抜き出すことはできない。
【００１３】
図７は、スタッド係止具１が小径のスタッド６を受入れる様子を示している。この場合も、各弾性片１３の当接部１５がスタッド６の外面に当接して、軸部７の穴１１の中心とスタッド６の中心とが一致している。このため、両係止爪１０のねじへの係止力が、一様に作用し、高い係止力を維持する。また、スタッド６と軸部７の穴１１との間に隙間ｈがあっても、各弾性片１３の当接部１５は、スタッド６の側面に弾性的に摩擦係合しており、小径スタッド６の場合のぐらつきも防止する。なお、スタッド係止具１に抜き荷重が加わっても、係止爪１０の係止力は高いので、スタッド係止具１を抜き出すことはできない。
【００１４】
図８〜図１４は、特開平８−１５９１１８号のスタッド係止具に、本発明の原理を適用した、本発明の第２の実施例となるスタッド係止具２５を示している。図８はスタッド係止具２５の正面図、図９はスタッド係止具の側面図、図１０は図８のＨ−Ｈ線断面図、図１１は図８のＩ−Ｉ線から見た図、図１２はパンタグラフ形状の保持片を折り曲げて第２軸部を第１軸部に挿入した状態の図１０と同様の断面図、図１３及び図１４はスタッド係止具２５を用いて取付部材を被取付部材に取付ける様子を示す。
【００１５】
図８〜図１２において、シート状の取付部材を車体パネル等の被取付部材に取付けるスタッド係止具２５は、プラスチックで成形されており、取付部材の取付穴に挿通される第１軸部２６と、第１軸部２６の下端に設けられて取付部材の一方の面を保持するフランジ２７と、第１軸部２６の上端に設けられて伸長時には第１軸部２６を延長するように延び、中間のヒンジ２９を中心に半径方向外方に折り曲げられて取付部材の他の面を保持する、パンタグラフ形状の一対の保持片３０と、各保持片３０の端部を相互に連結する頭部３１とを有し、更に、頭部３１には、保持片３０を折り曲げるときに該頭部を第１軸部２６に向けて案内するように長く延びる第２軸部３３が設けられている。この第２軸部３３には、保持片３０を折り曲げた状態に保持するため係止爪３４が設けられ、第１軸部２６には係止爪３４に係止する係止肩３５が形成されている。第２軸部３３の係止爪３４は、また、スタッドへ係止する係止爪としても形成されている。このスタッド係止具２５は、保持片３０を折り曲げる場合に、頭部３１への力が不均一でも第２軸部３３が第１軸部２６に挿入されるので、頭部３１が第１軸部２６に向けて確実に案内され、適正なパンタグラフ形状のままに折り曲げられ、折り曲げられた保持片３０は適正な状態で、シート状の取付部材を保持する。
【００１６】
第２軸部３３は、係止爪３４の根元部を保持する部分に大径のスタッドも受入れる得る穴が形成されており、また、係止爪３４の先端より上方の部分から頭部３１までの間には、第２軸部３３の穴の中心と該穴に受入れられたスタッドの軸心とを合わせるように、スタッドの側面を弾性的に押圧する形状に形成された弾性片３７が一対設けられている。この弾性片３７は、第１実施例のスタッド係止具１の弾性片１３と同じ機能を有する。弾性片３７の中間位置には、内側に曲げられて小径のスタッドにも当接することのできる当接部３８が形成されている。そして、この当接部３８には、スタッドのねじに係止する突起３９が形成されている。弾性片３７は、図１１に最もよく示されるように、中間位置の当接部３８の設けられる部分がやや細く形成されており、その可撓性を高くして、スタッドへの挿入力を軽減している。また、第１軸部２６とフランジ２７とには、三角形のリブ４１が、第２軸部３３に設けられた係止爪３４に対応する位置に設けられている。図１２に示すように、保持片３０が折り曲げられて取付部材の両面をスタッド係止具２５が挟持した状態において、係止爪３４の外側への撓みがリブ４１によって規制され、係止力を強固に維持することができる。
【００１７】
スタッド係止具２５をサイレンサー等のシート状取付部材４２に取付け、パネル４３に取付部材４２を取付ける動作を、図１３及び１４を参照して説明する。先ず、スタッド係止具２５の頭部３１を取付部材４２の取付穴にあてがってそのまま押込み、フランジ２７を取付部材４２の下面に接面させる。次に、フランジ２７を接面させたまま、頭部３１をフランジ側へ強く押込み、第２軸部３３を第１軸部２６に挿入し、保持片３０を、ヒンジ２９を中心に半径方向外方に折り曲げて、取付部材４２の上面に接面する第２のフランジを形成する。このとき、第２軸部３３の係止爪３４が第１軸部２６の係止肩３５に係止して、保持片３０の折り曲げ状態が保持され、図１３に示すように、スタッド係止具２５が取付部材４２に取付けられる。
【００１８】
スタッド係止具２５を取付部材４２に取付けた後、車体等のパネル４３に取付部材４２を固定するには、取付部材４２のスタッド係止具２５のフランジ２７をパネル４３に立設されたスタッド４５の先端にあてがい、矢印４６に示すようにそのまま押込めばよい。この押込みにより、スタッド４５が、第２軸部３３の係止爪３４に係合しながら、また、弾性片３７に摩擦係合しながら、スタッド係止具２５内に進入し、その押し込みの終わりにおいて、係止爪３４がスタッド４５のねじに係止し、弾性片３７がスタッド４５に当接し、更に、弾性片３７の突起３９がスタッドのねじに係止して、スタッド係止具２５がスタッド４５に固定され、これにより、取付部材４２がパネル４３に固定される。
【００１９】
このスタッド係止具２５もまた、各弾性片３７の当接部１５がスタッド４５の外面に当接して、第２軸部３３の穴の中心とスタッドの中心とを一致させているため、両係止爪３４のねじへの係止力が一様に作用して高い係止力を維持する。また、スタッドと第２軸部の穴との間に隙間があっても、各弾性片の当接部は、スタッドの側面に弾性的に摩擦係合しており、小径スタッドの場合のぐらつきも防止する。勿論、スタッド係止具２５に抜き荷重が加わっても、係止爪３４の係止力は高いので、スタッド係止具１を抜き出すことはできない。
【００２０】
【発明の効果】
本発明のスタッド係止具によれば、弾性片は係止爪より上方すなわち軸心方向において離れた位置に且つ板状に形成されているので、弾性片は成形の容易な形状でありで且つその位置も成形の容易な位置にあり、しかも、係止爪には弾性片が隣接しないので係止爪の成形も容易になり、しかも、係止爪も弾性片も低い反力で半径方向外方に撓むように成形でき、小径のスタッドは勿論のこと、大径のスタッドであっても係止具をスタッドに締結するための押し込みに要する力すなわち締結荷重は小さくて済み、更に、小径のスタッドであっても、係止爪はスタッドのねじ又は周溝に均一に係止してその係止力を十分に発揮して、締結力が高いままに維持される。
【図面の簡単な説明】
【図１】本発明の第１実施例となるスタッド係止具の平面図である。
【図２】図１のスタッド係止具の正面図である。
【図３】図１のスタッド係止具の側面図である。
【図４】図２のスタッド係止具のＡ−Ａ線断面図であり、円Ｅは従来の係止爪部分を示す図である。
【図５】図１のスタッド係止具のＢ−Ｂ線断面図であり、円Ｄは弾性片の当接部の変形例を示す図であり、円Ｇは係止爪の変形例を示す図である。
【図６】大径のスタッドにスタッド係止具を係止した様子を示す断面図である。
【図７】小径のスタッドにスタッド係止具を係止した様子を示す断面図である。
【図８】本発明の第２実施例となるスタッド係止具の正面図である。
【図９】図８のスタッド係止具の側面図である。
【図１０】図８のスタッド係止具のＨ−Ｈ線断面図である。
【図１１】図８のスタッド係止具のＩ−Ｉ線から見た図である。
【図１２】パンタグラフ形状の保持片を折り曲げて第２軸部を第１軸部に挿入した状態の図１０と同様の断面図である。
【図１３】図８のスタッド係止具を取付部材に取付ける様子を示す図である。
【図１４】図１３のスタッド係止具付きの取付部材を被取付部材に取付ける様子を示す図である。
【符号の説明】
１第１実施例のスタッド係止具
２パネル
３大径スタッド
５取付部材
６小径スタッド
７軸部
９フランジ
１０係止爪
１１軸部の穴
１３弾性片
１４スタッド受入部
１５当接部
１７突起
１９係止爪
２５第２実施例のスタッド係止具
２６第１軸部
２７フランジ
２９ヒンジ
３０保持片
３１頭部
３３第２軸部
３４係止爪
３５係止肩
３７弾性片
３８当接部
３９突起
４１リブ
４２取付部材
４３パネル
４５スタッド[0001]
[Industrial application fields]
The present invention relates to a stud locking tool suitable for attaching another mounting member to a mounted member using a stud standing on the mounted member such as a panel.
[0002]
[Prior art]
Stud locks are known in which a stud formed with a screw or a circumferential groove extends upward from the panel and uses the stud to attach another mounting member. Such a known stud locking device has a cylindrical portion having a hole for receiving the stud, and a plurality of locking claws extending toward the center of the hole so as to be locked to a screw or a circumferential groove of the stud, When the cylindrical portion is pushed so that the stud extending upward is received in the hole of the cylindrical portion, each locking claw is locked to the screw of the stud, so that another member can be easily attached to the panel. In an automobile body panel that frequently uses such stud fasteners, the outer diameter of the stud often varies depending on the vehicle type, and there is a problem that various stud fasteners must be prepared in accordance with the outer diameter of the stud. there were. That is, in the case of a small-diameter stud, if a locking tool having a hole suitable for a large-diameter stud is used, the locking claw is not fully locked, the fastening force is insufficient, and the fastening is released. . In addition, when a small-diameter locking tool is used for the large-diameter stud, the fastening load when the locking tool is pushed in is high, increasing the burden on the operator and possibly damaging the locking tool. For this reason, the number of types of locking tools has increased.
[0003]
[Problems to be solved by the invention]
Therefore, the applicants of the present application have already proposed a sharable stud locker that can maintain a sufficient fastening force and can be fastened with a low load, even if the studs have different diameters (Japanese Patent Application). Hei 9-240541). This stud locking tool is formed with a wide tip end of the locking claw and a narrow base portion of the locking claw, and abuts against the side surface of the stud at a position different from the locking claw in the circumferential direction. An elastic piece for matching the center of the hole with the axis of the stud is provided. This stud locker has a small force as well as a small tightening load, not only a small-diameter stud, but also a large-diameter stud. Is maintained high, and the fastening force is maintained high. However, there is still room for improvement in this stud lock. In this stud locking tool, the shape of the elastic piece that abuts the side surface of the stud at a position different from the locking claw in the circumferential direction to match the center of the hole and the axis of the stud is somewhat complicated, The mold for molding the elastic piece was complicated.
[0004]
Therefore, an object of the present invention is to provide a stud locking tool that can maintain a sufficient fastening force and can be fastened with a low load even if the studs have different diameters, and can be easily molded.
[0005]
[Means for solving the problems]
In order to achieve such an object, according to the present invention, a shaft portion having a hole for receiving a stud having a screw or a circumferential groove formed on the outer surface, and a center of the hole so as to be engaged with the screw or the circumferential groove. When the shaft portion is pushed so as to receive the stud that extends upward from a member to be attached such as a panel into the hole, the locking claw is locked to the screw or circumferential groove of the stud. Te, wherein a stud fastener that is secured to the mounting member, the hole of the shaft portion is formed in a size to receive the stud of the maximum diameter of the studs of different diameters, the locking claw, the The stud extends in the direction of stud insertion from the stud inlet that receives the stud toward the center of the hole so that it can be locked to the screw or circumferential groove of the stud with the smallest diameter among the studs of different diameters, The diameter of the stud It is constituted by opposite sides of the resiliently pressing to shape in the extending leads along the stud inlet in the axial direction elongated plate shape, a pair of opposing elastic pieces, each elastic piece, said stud The entrance portion is spaced apart from each other by a size large enough to receive the stud with the maximum diameter, and the portion located on the stud tip side from the locking claw is the center of the hole and the shaft of the stud received in the hole. to match the heart, the stud Ri inlet shape der to approach each other than the distance of the portion of the elastic piece opposing the pair, the elastic side diametrically opposite of said stud in said close portion stud fasteners, wherein pressing to Rukoto are provided manner.
[0006]
[Action]
According to the locking device of the present invention, since the elastic piece is formed in a plate shape above the locking claw, that is, in a position separated in the axial direction, the elastic piece is in a shape and position that is easy to mold. In addition to being easy to mold, there is no elastic piece adjacent to the locking claw, so it is easy to mold the locking claw, and both the locking claw and the elastic piece are radially outward with a low reaction force. It can be molded so that it can be bent, and not only a small-diameter stud, but also a large-diameter stud, the force required to push the fastener to the stud, that is, the fastening load, is small. Even so, the locking claw is uniformly locked to the screw or circumferential groove of the stud, and the locking force is sufficiently exerted to maintain the fastening force high.
[0007]
In the present invention, a pair of elastic pieces can be provided so as to press the side surfaces of the stud facing in the diametrical direction. Also, three or more elastic pieces can be provided in the circumferential direction. The upper end of the elastic piece can be connected to a stud receiving part that receives the upper part of the stud. Thereby, the upper end portion of the elastic piece can be reliably fixed. A protrusion projecting so as to engage with the side surface of the stud can be provided at the intermediate portion of each elastic piece, whereby the locking force to the stud can be increased. The locking claw is formed with a wide tip and a narrow base so that it can be easily bent and deformed radially outward while maintaining the strength of the tip. The load is small. The stud locking device is formed with a flange that presses another mounting component on the lower end side of the shaft portion, and by pressing the shaft portion against the stud, the stud locking device attaches the other mounting component to the mounted member. Can be used as a tool. Further, the stud locking device is formed with a flange that presses one surface of another mounting part on the lower end side of the shaft portion, and the upper end of the elastic piece is connected to the pantograph-shaped head, The other surface of the other mounting component is pressed by folding the head of the other mounting member, and the stud locking device can be attached so as to sandwich the both surfaces of the other mounting member.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the stud locking tool 1 which becomes 1st Example of this invention is demonstrated with reference to FIGS. 1 is a plan view of the stud lock 1, FIG. 2 is a front view of the stud lock 1, FIG. 3 is a side view of the stud lock 1, and FIG. 4 is an A- of the stud lock 1 of FIG. FIG. 5 is a cross-sectional view taken along line B-B of the stud locking device 1 of FIG. 1, and FIG. 6 is a large-diameter stud 3 that extends upward from the panel 2 as a mounted member by the stud locking device 1. FIG. 7 is a diagram illustrating a state in which another mounting member 5 is fixed, and FIG. 7 is a diagram illustrating a state in which the mounting member 5 is fixed to a small-diameter stud 6 that extends upward from the panel 2. As is well known, a screw or a circumferential groove is formed on the outer surface of the stud. The stud is erected on the panel 2 so as to extend upward from the panel 2. It should be understood that depending on the orientation of the panel 2, the orientation of the stud may also change. In this document, for convenience of explanation, the stud is described as extending upward from the panel 2.
[0009]
1 to 5, the stud locking device 1 according to the first embodiment of the present invention is made of an integrally molded product of plastic, and is formed on a shaft portion 7 having a hole for receiving a stud, and on the lower end side of the shaft portion 7. And a locking claw 10 extending from the shaft portion 7 toward the center of the hole so as to be locked to the screw or circumferential groove of the stud. And the hole 11 of the axial part 7 is formed in the magnitude | size which receives the stud (for example, large diameter stud 3 of FIG. 6) of the largest diameter among studs of a different diameter. Further, the locking claws 10 are formed as a pair of opposed locking claws so as to engage with the side surfaces of the studs in the diametrical direction, and the tips of the locking claws 10 are the screw or peripheral of the stud with the smallest diameter. It extends toward the center of the hole so that it can also be locked in the groove. The shaft portion 7 has a pair of elastic pieces 13 thereabove and a cylindrical stud receiving portion 14 to which the tips of the elastic pieces 13 are connected. The stud receiving portion 14 has a function of fixing the upper end portion of the elastic piece 13 to keep the strength of the elastic piece 13 constant and stably attaching the stud locking tool 1 to the received stud. The stud receiving portion 14 is formed in a cylindrical shape having a receiving hole having a size for receiving the large-diameter stud 3.
[0010]
The elastic piece 13 is formed of a pair of opposed elongated elastic pieces that are engaged with the side surface of the stud at a position opposed to each other in the diametrical direction. And each elastic piece 13 is a part (namely, seeing in the direction which receives a stud from the front-end | tip of the latching claw 10 on the opposite side to a stud entrance part) from the front-end | tip of the latching claw 10 of the axial part 7. ), The side surface of the stud is elastically pressed so that the center of the hole 11 of the shaft portion 7 and the shaft center of the stud received in the hole are aligned. In the illustrated example, each elastic piece 13 is formed as a thin plate-like plate-like body as a whole, and the lower part and the upper part are separated from each other with an interval for easily accepting the large-diameter stud 3. In the portion, the contact portion 15 is formed so as to be close to each other so that the side surface of the small-diameter stud 6 can be elastically contacted. The abutment portion 15 abuts against the side surface of the stud when the stud is inserted into the shaft portion, and is bent outward in the radial direction according to the outer diameter of the stud. 7 is maintained so that the axis of the hole 11 matches the axis of the stud, and each elastic piece 13 is also frictionally engaged with the stud to prevent wobbling in the case of a small diameter stud. The number of the elastic pieces 13 can be set to any number as long as the stud locking device 1 is maintained in a posture such that the axis of the shaft hole 11 is aligned with the axis of the stud.
[0011]
In addition, in the contact portion 15 of the elastic piece 13 shown in a circle C in FIG. 5, as shown in a circle D, a protrusion 17 that protrudes to engage with the side surface of the stud can be provided. The protrusion 17 can improve the locking force to the stud. Since the main locking force to the stud is obtained by the locking claws 10, the width a of each locking claw 10 should be widened as shown in FIG. 5 in order to improve the locking force. Since the elastic piece 13 is separated from the locking claw 10, the width a can be made considerably wider than the locking claw of the stud locking tool of Japanese Patent Application No. 9-240541. Thus, since the width a can be widened, the thickness b (FIG. 5) of the locking claw 10 can be made sufficiently thin, and the conventional thick locking claw 18 shown by circle E in FIG. The same high locking force can be maintained. Since the thickness of the locking claw 10 can be reduced, the pushing force to the stud can be considerably lower than that of the conventional thick locking claw 18, and the locking operation can be performed easily and reliably. Further, in order to reduce this pushing force, the locking claw 10 shown in the circle F of FIG. 5 has a wide end (width a) at the tip side and the root like the locking claw 19 shown in the circle G of FIG. The portion may be formed with a narrow width (width d), whereby the locking strength on the tip side can be maintained, and the portion can be easily bent and deformed radially outward to reduce the pushing force to the stud. Moreover, the height position of the front-end | tip of each latching claw 13 is shifted by the half pitch (e) of the screw of a screw stud, as shown in FIG. 4, This can also maintain a latching force high. Further, the number of the locking claws 13 is not limited to a pair and can be arbitrarily set.
[0012]
6 and 7 show a state in which the attachment member 5 is attached to the panel 2 as the attachment member using the stud locking tool 1 having the above-described configuration. In FIG. 6, a large-diameter stud 3 is erected on the panel 2 toward the upper side of the panel by welding. To attach the mounting member 5 to the panel 2, the mounting member 5 is positioned so that the large-diameter stud 3 passes through the mounting hole 21, and then the stud lock 1 is received in the hole 11. Push in. In this pushing, the tips of the respective locking claws 13 are pushed down while being sequentially engaged with the threads of the large-diameter stud 3, and the elastic piece 13 has its abutment portion 15 formed by the large-diameter stud 3. It is bent outward in the radial direction, and the reaction force causes the axial center of the hole 15 of the stud locking shaft portion 7 to be aligned with the axial center of the stud 3 and the stud locking device is pushed in a proper posture. Done. Finally, the flange 9 presses the attachment member 3 and the attachment member 3 is attached to the panel 2. In this case, since the center of the shaft hole 11 and the center of the stud 3 coincide with each other due to the elastic piece 13, the locking force of the locking claws 10 on the screw acts uniformly and high locking force. To maintain. Even if a pulling load is applied to the stud locking device 1 against this locking force, the locking force of the locking claw 10 is high, so that the stud locking device 1 cannot be extracted.
[0013]
FIG. 7 shows how the stud lock 1 receives the small-diameter stud 6. Also in this case, the contact portion 15 of each elastic piece 13 contacts the outer surface of the stud 6, and the center of the hole 11 of the shaft portion 7 and the center of the stud 6 coincide. For this reason, the locking force to the screw of both locking claws 10 acts uniformly, and maintains a high locking force. Even if there is a gap h between the stud 6 and the hole 11 of the shaft portion 7, the contact portion 15 of each elastic piece 13 is elastically frictionally engaged with the side surface of the stud 6, and the small diameter stud The wobble in the case of 6 is also prevented. Even if a pulling load is applied to the stud locking device 1, the locking force of the locking claw 10 is high, so that the stud locking device 1 cannot be extracted.
[0014]
FIGS. 8 to 14 show a stud locking device 25 according to a second embodiment of the present invention in which the principle of the present invention is applied to the stud locking device of Japanese Patent Laid-Open No. 8-159118. 8 is a front view of the stud locking device 25, FIG. 9 is a side view of the stud locking device, FIG. 10 is a cross-sectional view taken along the line H-H in FIG. 8, and FIG. 12 is a cross-sectional view similar to FIG. 10 in a state in which the pantograph-shaped holding piece is bent and the second shaft portion is inserted into the first shaft portion, and FIGS. A state in which is attached to a member to be attached is shown.
[0015]
8 to 12, a stud locking tool 25 for attaching a sheet-like attachment member to a member to be attached such as a vehicle body panel is formed of plastic, and the first shaft portion 26 inserted through the attachment hole of the attachment member. And a flange 27 provided at the lower end of the first shaft portion 26 to hold one surface of the mounting member, and provided at the upper end of the first shaft portion 26 so as to extend the first shaft portion 26 when extended. A pair of pantograph-shaped holding pieces 30 that are bent radially outward about the intermediate hinge 29 to hold the other surface of the mounting member, and a head that connects the ends of the holding pieces 30 to each other Further, the head portion 31 is provided with a second shaft portion 33 that extends long so as to guide the head portion toward the first shaft portion 26 when the holding piece 30 is bent. The second shaft portion 33 is provided with a locking claw 34 for holding the holding piece 30 in a bent state, and the first shaft portion 26 is formed with a locking shoulder 35 for locking to the locking claw 34. ing. The locking claw 34 of the second shaft portion 33 is also formed as a locking claw that locks to the stud. When the holding piece 30 is bent, the stud locking member 25 is inserted into the first shaft portion 26 even if the force to the head portion 31 is not uniform. The sheet is securely guided toward the portion 26, folded in an appropriate pantograph shape, and the folded holding piece 30 holds the sheet-like attachment member in an appropriate state.
[0016]
In the second shaft portion 33, a hole for receiving a large-diameter stud is formed in a portion that holds the base portion of the locking claw 34, and from the portion above the tip of the locking claw 34 to the head 31. A pair of elastic pieces 37 formed in a shape that elastically presses the side surface of the stud so that the center of the hole of the second shaft portion 33 and the shaft center of the stud received in the hole are aligned. Is provided. This elastic piece 37 has the same function as the elastic piece 13 of the stud locking device 1 of the first embodiment. At an intermediate position of the elastic piece 37, an abutting portion 38 that is bent inward and can abut against a small-diameter stud is formed. The abutment portion 38 is formed with a protrusion 39 that is engaged with the stud screw. As best shown in FIG. 11, the elastic piece 37 is formed with a slightly narrow portion where the abutting portion 38 at the intermediate position is provided, and its flexibility is increased to reduce the insertion force into the stud. is doing. Further, the first shaft portion 26 and the flange 27 are provided with triangular ribs 41 at positions corresponding to the locking claws 34 provided on the second shaft portion 33. As shown in FIG. 12, in the state where the holding piece 30 is bent and both sides of the mounting member are sandwiched by the stud locking device 25, the outward bending of the locking claw 34 is restricted by the rib 41, and the locking force is increased. It can be maintained firmly.
[0017]
The operation of attaching the stud locking member 25 to a sheet-like attachment member 42 such as a silencer and attaching the attachment member 42 to the panel 43 will be described with reference to FIGS. First, the head 31 of the stud locking tool 25 is applied to the mounting hole of the mounting member 42 and pushed in as it is, so that the flange 27 comes into contact with the lower surface of the mounting member 42. Next, with the flange 27 kept in contact, the head 31 is pushed firmly toward the flange, the second shaft portion 33 is inserted into the first shaft portion 26, and the holding piece 30 is radially outward with the hinge 29 as the center. The second flange that contacts the upper surface of the mounting member 42 is formed. At this time, the locking claw 34 of the second shaft portion 33 is locked to the locking shoulder 35 of the first shaft portion 26, and the bent state of the holding piece 30 is maintained. As shown in FIG. The tool 25 is attached to the attachment member 42.
[0018]
In order to fix the mounting member 42 to the panel 43 such as a vehicle body after the stud locking device 25 is mounted on the mounting member 42, the stud 27 erected on the panel 43 with the flange 27 of the stud locking device 25 of the mounting member 42. It can be applied to the tip of 45 and pushed in as it is as shown by the arrow 46. By this pushing, the stud 45 enters the stud locking device 25 while engaging the locking claw 34 of the second shaft portion 33 and frictionally engaging the elastic piece 37, and the end of the pressing. 2, the locking claw 34 is locked to the screw of the stud 45, the elastic piece 37 is brought into contact with the stud 45, and the protrusion 39 of the elastic piece 37 is locked to the screw of the stud, so that the stud locking tool 25 is The mounting member 42 is fixed to the panel 43 by the fixing to the stud 45.
[0019]
Also in this stud locking tool 25, since the contact portion 15 of each elastic piece 37 contacts the outer surface of the stud 45, the center of the hole of the second shaft portion 33 and the center of the stud coincide with each other. The locking force of the locking claw 34 to the screw acts uniformly to maintain a high locking force. Even if there is a gap between the stud and the hole of the second shaft portion, the contact portion of each elastic piece is elastically frictionally engaged with the side surface of the stud, and wobble in the case of a small-diameter stud. To prevent. Of course, even if a pulling load is applied to the stud locking device 25, the locking force of the locking claw 34 is high, so the stud locking device 1 cannot be pulled out.
[0020]
【The invention's effect】
According to the stud locking device of the present invention, since the elastic piece is formed in a plate shape above the locking claw, that is, at a position separated in the axial direction, the elastic piece has an easily molded shape and Its position is also easy to mold, and since there is no elastic piece adjacent to the locking claw, it is easy to mold the locking claw, and both the locking claw and the elastic piece are out of the radial direction with a low reaction force. In addition to small diameter studs, not only small diameter studs, but also large diameter studs, the force required to push the fastener to the studs, that is, the fastening load, is small, and the small diameter studs Even so, the locking claw is uniformly locked to the screw or circumferential groove of the stud, and the locking force is sufficiently exerted so that the fastening force is kept high.
[Brief description of the drawings]
FIG. 1 is a plan view of a stud locking device according to a first embodiment of the present invention.
FIG. 2 is a front view of the stud lock of FIG.
3 is a side view of the stud lock of FIG. 1. FIG.
4 is a cross-sectional view taken along line AA of the stud locking device of FIG. 2, and a circle E is a view showing a conventional locking claw portion. FIG.
5 is a cross-sectional view taken along the line BB of the stud locking device of FIG. 1, in which a circle D is a diagram illustrating a modification of the contact portion of the elastic piece, and a circle G is a modification of the locking claw. FIG.
FIG. 6 is a cross-sectional view showing a state in which a stud locking tool is locked to a large-diameter stud.
FIG. 7 is a cross-sectional view showing a state in which a stud locking tool is locked to a small diameter stud.
FIG. 8 is a front view of a stud locking device according to a second embodiment of the present invention.
9 is a side view of the stud lock of FIG. 8. FIG.
10 is a cross-sectional view taken along the line HH of the stud locking device of FIG.
11 is a view of the stud locking device of FIG. 8 as seen from the line I-I.
12 is a cross-sectional view similar to FIG. 10 in a state in which a pantograph-shaped holding piece is bent and a second shaft portion is inserted into the first shaft portion.
13 is a view showing a state in which the stud locking tool of FIG. 8 is attached to an attachment member.
14 is a view showing a state in which the attachment member with the stud locking tool of FIG. 13 is attached to the attached member.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Stud locking tool 2 of 1st Example Panel 3 Large diameter stud 5 Mounting member 6 Small diameter stud 7 Shaft part 9 Flange 10 Locking claw 11 Shaft hole 13 Elastic piece 14 Stud receiving part 15 Contact part 17 Protrusion 19 Locking claw 25 Stud locking tool 26 of the second embodiment First shaft portion 27 Flange 29 Hinge 30 Holding piece 31 Head 33 Second shaft portion 34 Locking claw 35 Locking shoulder 37 Elastic piece 38 Abutting portion 39 Projection 41 Rib 42 Mounting member 43 Panel 45 Stud

Claims

A shaft portion having a hole for receiving a stud having a screw or a circumferential groove formed on the outer surface, and a locking claw extending toward the center of the hole so as to be locked to the screw or the circumferential groove, such as a panel When the shaft portion is pushed so that the stud extending upward from the attached member is received in the hole, the engaging claw is engaged with a screw or a circumferential groove of the stud and is fixed to the attached member. In the ingredients
The hole of the shaft portion is formed to have a size to receive a stud having a maximum diameter among studs having different diameters,
The locking claw extends toward the center of the hole so that it can be locked to a screw or a circumferential groove of a stud having the smallest diameter among the studs of different diameters from a stud inlet portion that receives the stud in the stud insertion direction. And
The shaft portion is configured by a pair of opposing elastic pieces in the form of elongated plates that are connected to the stud inlet portion along the axial direction in a shape that elastically presses the side surfaces facing the diameter direction of the stud. and which, the elastic pieces, the are separated from each other by the size of the gap to accept the stud of the maximum diameter in the stud inlet portion, the portion is from the locking claw in the stud tip side, the center of the hole and to match the axis of the stud which is received in the hole, the stud inlet Ri shape der to approach each other than the distance of the portion of the elastic piece opposing the pair, it said in the approaching portion press the side diametrically opposite the stud elastically,
Stud locking tool characterized by the above.

The stud locking tool according to claim 1, wherein an upper end of the elastic piece is connected to a stud receiving portion that receives an upper portion of the stud.

3. The stud locking device according to claim 2, wherein a protrusion protruding so as to engage with a side surface of the stud is provided at an intermediate portion of each elastic piece.

The stud locking device according to any one of claims 1 to 3, wherein the locking claw is wide at the distal end side so as to maintain the strength at the distal end side and easily bend and deform radially outward. And the stud locking tool characterized by the base part being formed narrowly.

The stud locking tool according to any one of claims 1 to 4, wherein a flange that presses another mounting part is formed on a lower end side of the shaft portion, and the shaft portion is pressed against the stud. A stud locking tool characterized in that the other mounting component is mounted on the mounted member.

The stud locking tool according to any one of claims 1 to 4, wherein the shaft portion includes an outer first shaft portion and an inner second shaft portion, and an upper end side of the first shaft portion includes: A pantograph-shaped holding piece that bends in the middle extends upward, the upper end of the holding piece is connected to the head, and the second shaft portion hangs down from the head and is positioned inside the holding piece to be the first A flange that presses one surface of another mounting part is formed on the lower end of the first shaft portion, and the second shaft portion has the locking claw and the An elastic piece is formed, and by inserting the second shaft portion into the first shaft portion, the pantograph-shaped holding piece is folded and the other surface of the other mounting part is pressed and folded. The holding piece and the flange are attached so as to sandwich both surfaces of the other attachment member. Stud fastener to be.

7. The stud locking device according to claim 6, wherein the outer surface of the first shaft portion is restrained from bending outward of the locking claw at a position corresponding to the locking claw of the inserted second shaft portion. A stud anchor having a rib.