JP3794801B2

JP3794801B2 - Fastener material

Info

Publication number: JP3794801B2
Application number: JP29275597A
Authority: JP
Inventors: 肇服部
Original assignee: 3M Co
Current assignee: 3M Co
Priority date: 1997-10-24
Filing date: 1997-10-24
Publication date: 2006-07-12
Anticipated expiration: 2017-10-24
Also published as: JPH11127915A

Description

【０００１】
【発明の属する技術分野】
本発明は、主要面及び主要面の反対側の裏面を有する基部と、基部の主要面に設けられる複数の係合要素とを備えた対面係合式のファスナー部材に関する。
【０００２】
【従来の技術】
車両用座席、事務用又は家庭用の椅子、マットレス等の、種々の備品、家具類において、例えば発泡性樹脂材料の成形体からなるクッション性を有したコア部材の表面に、布帛や皮革等からなる柔軟なカバー部材を被着したものがある。この種の備品、家具類では、使用中にカバー部材が弛んだりずれたりしないように、カバー部材をコア部材に強固に固着する必要があり、そのための固着手段として、平板状の基部の主要面に複数の係合要素を配設した対面係合式のファスナー部材（いわゆる面ファスナー）を使用することは知られている。
【０００３】
対面係合式のファスナー部材を使用する場合、ファスナー部材をコア部材の表面の所定位置に固定的に設置するとともに、ファスナー部材の係合要素群に係合可能な対応係合要素をカバー部材の裏面に形成し、コア部材にカバー部材を被せた後に両係合要素を相互に押し付けて係合させることにより、比較的容易にカバー部材をコア部材に固着することができる。このような目的で使用されるファスナー部材は、全体が樹脂材料から一体成形されるものや、布帛製又は樹脂製の基部に多数の樹脂製モノフィラメントを植設してなるものがあるが、いずれの場合もコア部材へ基部を強固に固定する目的で、例えば基部の裏面に、コア部材に埋め込み式に連結可能な連結要素を備えることができる。
【０００４】
また、カバー部材をコア部材に固着する固着手段としてのファスナー部材は、座席等の備品の表面の触感や外観を損なわないように、カバー部材の固着強度及び密着性を低下させない範囲で可及的に小形であることが所望される。特に自動車用座席では、着席者による荷重が座席上で頻繁に移動するので充分な固着強度が要求され、しかも着席者の疲労を軽減するために異物感を排除した高水準の安楽性を提供することが望まれるので、コア部材の表面に設けた溝部やカバー部材の縫目に沿って配置可能な細長い帯形状を有したファスナー部材が有効に利用される。
【０００５】
このような目的で好適に利用できるファスナー部材として、特開平９−２２４７２０号公報は、インサート成形工程により成形主体（例えば上記コア部材）に固定的に設置可能なファスナー部材を開示する。このファスナー部材は、帯状の基部の裏面に設けた連結要素をインサート成形時に成形主体に埋め込むことにより、成形主体の表面に係合要素を露出させた状態で成形主体に固定的に連結できる。
【０００６】
さらに特開平９−２２４７２０号公報は、座席等の備品の外形に対応した所望の曲線形態にファスナー部材を配置できるようにするために、基部裏面の長手方向へ延びる中心線に沿って立設された壁状の脚部と、脚部の自由端から横断方向両側へ基部に平行に延設されたアンカー部とからなる連結要素を備えたファスナー部材を開示する。このファスナー部材では、材料強度的に平衡した基部と連結要素のアンカー部とが、連結要素の脚部を介し所定間隔を開けて互いに結合されているので、基部を水平方向（基部の主要面に略平行な方向）へ撓曲しようとする際に、応力が基部とアンカー部とに略均等に分散して加わり、その結果、基部が捩じれたり波状に撓んだりすることなく水平方向へ容易に撓曲できるようになる。
【０００７】
仮に、ファスナー部材を所望の曲線形態に配置したことにより、基部が捩じれたり波状に撓んだりした状態で成形主体に固定されてしまうと、被着体（例えば上記カバー部材）を成形主体に固着する際に、基部主要面の係合要素が被着体の対応係合要素に正確に係合することが困難になり、ファスナー部材の係合機能の低下や、被着体の外面の触感及び外観の劣化を生じる危惧がある。この点で、上記した応力平衡機能を有する連結要素を備えたファスナー部材は、基部が捩じれたり波状に撓んだりすることなく水平方向へ容易に撓曲できるので、ファスナー部材の係合機能を低下させることがなく、また被着体の触感及び外観を向上させる効果を奏する。
【０００８】
【発明が解決しようとする課題】
しかしながら、上記した応力平衡機能を有する連結要素を備えたファスナー部材は、連結要素の形状に起因して、基部の水平方向への撓曲を容易にするものの、基部の鉛直方向（基部の主要面に略直交する方向）への撓曲は却って困難となることが判っている。したがってこのファスナー部材では、成形主体の表面の多様な三次元的形状に正確に追従させて配置すること、つまり基部主要面を成形主体の立体的表面に略平行に追従させて配置することが困難であり、そのような多様な立体的表面部分における成形主体と被着体（例えば上記したコア部材とカバー部材）との固着が不十分となるばかりか、被着体の外面の触感や外観の劣化を生じる危惧がある。このような危惧は、成形主体にインサート成形により固定されるファスナー部材に限らず、コア部材等の物体表面に後工程で接着剤等により固定されるファスナー部材においても同様に生じるものである。
【０００９】
したがって本発明の目的は、物体とそれを覆う被着体との相互固着手段として使用される対面係合式のファスナー部材において、基部の水平方向への撓曲だけでなく基部の鉛直方向への撓曲をも容易にして、物体の多様な三次元的表面形状に正確に追従させて配置でき、以て物体と被着体とを強固に固着できるとともに、被着体の外面の触感や外観を向上させることができるファスナー部材を提供することにある。
【００１０】
【課題を解決するための手段】
上記目的を達成するために、請求項１に記載の本発明は、主要面及び主要面の反対側の裏面を有する帯状の基部と、基部の主要面に設けられる複数の係合要素とを具備した対面係合式のファスナー部材において、基部は、長手方向へ離間配置される複数の膨張部と、隣合う膨張部を相互に連接する複数の節部とを備え、複数の膨張部の各々は、主要面を有する上段部分と裏面を有する下段部分とを、それら両部分間に空洞が形成されるように互いに離隔して備え、上段部分と下段部分とが少なくとも基部の長手方向における膨張部の両端で収斂して互いに一体に結合され、複数の節部の各々は、膨張部の両端における上段部分と下段部分との収斂した結合部位に形成されることを特徴とするファスナー部材を提供する。
【００１１】
請求項２に記載の本発明は、請求項１に記載のファスナー部材において、膨張部の上段部分と下段部分との間に形成される空洞が、上段部分と下段部分との間を基部の横断方向へ貫通して開口するファスナー部材を提供する。
【００１２】
請求項３に記載の本発明は、請求項１又は２に記載のファスナー部材において、膨張部の下段部分の裏面に設けられる連結要素をさらに備え、インサート成形工程により、成形主体に埋め込まれる連結要素を介して、成形主体の表面に係合要素を露出させた状態で成形主体に固定的に連結されるように構成されたファスナー部材を提供する。
【００１３】
【発明の実施の形態】
以下、添付図面を参照して、本発明をその好適な実施の形態に基づき詳細に説明する。各図において、同一又は類似の構成要素には同一の参照符号を付す。
図１〜図３は、本発明の一実施形態によるファスナー部材１０を示す。ファスナー部材１０は、略平坦でかつ相互に平行な主要面１２及び裏面１４を有する帯状の基部１６と、基部１６の主要面１２に所定の離間配置で立設される複数の係合要素１８とを備える。ファスナー部材１０は、例えば樹脂材料の一体成形品からなる対面係合式のファスナー部材であり、物体の立体的表面に固定的に設置されて、物体を覆う被着体に設けられた係合相手の係合要素に対面式に着脱可能に固着されるものである。
【００１４】
帯状の基部１６は、長手方向へ離間して直線状に整列配置される複数の膨張部２０と、長手方向へ隣合う膨張部２０を相互に連接する複数の節部２２とを備えて一体的に形成される。各膨張部２０は、基部１６の主要面１２を構成する表面部分を有した湾出形状の上段部分２４と、基部１６の裏面１４を構成する表面部分を有した平坦形状の下段部分２６とを、それら両部分２４、２６の間に空洞２８が画成されるように互いに離隔して備える。上段部分２４と下段部分２６とは、基部１６の長手方向における膨張部２０の両端で収斂して、互いに一体に結合される。なお、本明細書で使用する『収斂する』という用語は、この実施形態におけるように上段部分と下段部分とのいずれか一方のみがその両端で湾曲又は折曲して他方に向かって延びること、及び後述する変形例（図５（ｃ））におけるように上段部分と下段部分との双方がそれらの両端で湾曲又は折曲して互いに向かって延びることを含むものである。
【００１５】
図示実施形態では、上段部分２４は、下段部分２６に略平行に配置される平坦形状の第１部分２４ａと、基部１６の長手方向における第１部分２４ａの両端から外へ凸に湾曲して延びる一対の第２部分２４ｂと、それら第２部分２４ｂから下段部分２６に向けて末広がりに傾斜して延びる一対の第３部分２４ｃとを一体に有し、第２部分２４ｂから離れた側の第３部分２４ｃの先端で下段部分２６に一体に結合される。したがって、各膨張部２０の上段部分２４の第１部分２４ａの図示上面が基部１６の主要面１２を構成し、複数の係合要素１８は、この第１部分２４ａの上面に所定の離間配置で立設される。
【００１６】
各膨張部２０の上段部分２４には、第１部分２４ａ、第２部分２４ｂ及び第３部分２４ｃから空洞２８内に一体的に延設される壁３０が設けられる。壁３０は、基部１６の横断方向における膨張部２０の略中央に、同長手方向に沿って上段部分２４に対し直立状態に形成される。壁３０は図示のように、下段部分２６には連結されず、したがって空洞２８が、上段部分２４に設けた壁３０と下段部分２６との間を、基部１６の横断方向へ貫通して開口することが好ましい。しかし、基部１６の撓曲性を損なわないことを前提に、壁３０を下段部分２６に連結したり、空洞２８を基部横断方向へ開口させないようにしたりすることもできる。
【００１７】
各膨張部２０の下段部分２６には、基部１６の長手方向における略中央に同横断方向へ延びる一対の切欠き３２が設けられる。それら切欠き３２は、下段部分２６の長手方向へ延びる両縁部から内方へ刻設され、相互間に下段部分２６を一部残した状態で対向配置される。好ましくは各切欠き３２は、下段部分２６の中心から縁部に向かって徐々に拡がるように形成される。
【００１８】
各節部２２は、長手方向へ隣合う膨張部２０のそれぞれの上段部分２４と下段部分２６との収斂した結合部位に形成される。図示実施形態では、各節部２２は各膨張部２０の下段部分２６を長手方向へ水平に延長したような形状を有し、したがって基部１６の裏面１４は、全ての膨張部２０及び節部２２に渡って長手方向へ連続した平坦面となっている。また節部２２は、基部１６の横断方向全長に渡って２つの膨張部２０の間に形成される。このように節部２２は、膨張部２０の全体の厚みよりも薄い厚みを有して膨張部２０を連接するので、後述するように各膨張部２０に対し蝶番部分として作用する。
【００１９】
複数の係合要素１８は、ファスナー部材１０の成形工程において、例えば基部１６の成形と同時に基部１６と同一の樹脂材料から一体成形される。各係合要素１８は、基部１６の主要面１２から略直立状に突出する脚部３４と、脚部３４の先端近傍にて側方へ突設される複数の係合片３６とを備える。したがってファスナー部材１０では、複数の係合要素１８が先端の係合片３６にて係合相手部材の対応係合要素に係合する。
【００２０】
図１及び図３に示すように、複数の係合要素１８は、各膨張部２０の上段部分２４の第１部分２４ａ上で基部長手方向へ延びる略平行な２列に沿って、かつ各列間で各係合要素１８の位置を長手方向への配置間隔の半分だけ相互にずらして、いわゆる千鳥状に整列配置される。このような配置は、帯形状のファスナー部材１０において、可及的に少ない樹脂量で相手部材に対する充分な固着強度を確保でき、しかもファスナー部材１０を成形する際の型抜きを容易にする点で有利である。
【００２１】
上記構成を有するファスナー部材１０では、各膨張部２０の上段部分２４と下段部分２６との間に空洞２８が形成されているので、ファスナー部材１０の基部１６を水平方向すなわち主要面１２に平行な方向へ撓曲する際に、応力が各膨張部２０の上段部分２４と下段部分２６とに分散して加わり、両部分２４、２６が相互の拘束のもとで実質的に平衡して、空洞２８を利用して捩じれや撓みを生じる。その結果、各膨張部２０が上段部分２４と下段部分２６とを含む全体で比較的容易に撓曲されるので、ファスナー部材１０の基部１６は、所望の曲線に沿って全体として水平方向へ容易に撓曲されることになる。つまり、１枚の平板状の基部をその主要面に水平な方向へ撓曲しようとする場合に生じる基部の捩じれや撓みが、ファスナー部材１０の基部１６では長手方向に離間配置した複数の膨張部２０に分散して生じるので、基部全体としての捩じれや撓みの量を減少させた状態で、水平方向への撓曲が容易になるのである。
【００２２】
さらにファスナー部材１０の基部１６は、隣合う膨張部２０が薄肉の節部２２によって連接されているので、ファスナー部材１０の基部１６を鉛直方向すなわち主要面１２に直交する方向へ撓曲する際に、応力が各節部２２に分散して加わり、節部２２自体が変形することにより、節部２２を中心とした膨張部２０の相対的揺動が可能になる。したがって基部１６は、複数の節部２２のこのような蝶番作用により、全体として鉛直方向へ容易に撓曲されることになる。なおこのとき、基部１６を鉛直方向へ撓曲しようとする力は、大部分が節部２２の変形に費やされ、膨張部２０には殆ど及ぼされない。
【００２３】
このようにファスナー部材１０によれば、基部１６を構成する複数の膨張部２０の各々が基部１６の水平方向への撓曲を許容するとともに、複数の節部２２の各々が基部１６の鉛直方向への撓曲を許容するので、多様な立体的表面を有する物体の所望の表面部位に、基部１６を三次元的に正確に追従させて設置することが可能となる。特に、椅子等の備品において、発泡性樹脂材料の成形体からなるコア部材の多様な立体的表面に、布帛や皮革等からなる柔軟なカバー部材を被着する際の、カバー部材の固着手段としてファスナー部材１０を使用すれば、着席者の身体に触れないか触れる頻度の少ないコア部材表面の所望部位に沿って、基部１６を三次元的に正確に追従させてファスナー部材１０を設置でき、以てカバー部材をコア部材に実質的に密接して確実に固着することができる。しかも、コア部材へのカバー部材の固着部位にて、カバー部材の外面の触感や外観を些かも損なうことがないので、着席者に高水準の安楽性を提供するとともに高品質感を与えることができる。このような作用効果は、例えば図４に示すように、着席者の体形に沿う立体形状を有するバケットシート形式の自動車用座席において、座部のコア部材３８の形状に合わせて立体縫製されたカバー部材（図示せず）の三次元的に延びる縫目に沿ってファスナー部材１０を設置する場合に、特に有利なものである。
【００２４】
さらに補足すれば、各膨張部２０の上段部分２４に設けた壁３０は、基部１６を水平方向へ撓曲する際に、上段部分２４の特に第１部分２４ａの捩じれを抑えるように作用する。したがって、特に壁３０が下段部分２６に連結されていない場合、上段部分２４よりも下段部分２６の方が大きく捩じれや撓みを生じるようになり、その結果、基部全体としての捩じれや撓みの量を増加させることなく、しかも複数の係合要素１８を所定の直立姿勢に可及的に維持しつつ、基部１６を水平方向へ撓曲することが可能になる。そのようにして、物体の所望の三次元的表面に沿って固定的に設置されたファスナー部材１０は、被着体に設けた係合相手の係合要素との係合機能を低下させることがなく、しかも被着体の触感及び外観を向上させる。さらに壁３０は、膨張部２０の上段部分２４の不要な変形を防止するように作用するので、ファスナー部材１０の基部１６の全体の腰を強化して物体への設置作業、及び被着体に設けた係合相手の係合要素との係合作業を容易にする。
【００２５】
このような壁３０による捩じれ抑制作用は、図３に示すように膨張部２０の上段部分２４の横断方向寸法Ｗ１、主要面１２と裏面１４との間の距離すなわち膨張部全体の厚みＴ、及び膨張部２０の下段部分２６の横断方向寸法Ｗ２が互いに略等しいときに、特に顕著となる。膨張部２０の全体厚みＴが横断方向寸法Ｗ１、Ｗ２よりも大きい場合には、水平方向への撓曲は容易になるが、ファスナー部材１０の全体としての腰の強さが低下して、特に物体へ設置する際に取扱い難くなる傾向がある。また主要面１２は、ファスナー部材１０に所望される係着力を発揮するに十分な個数の係合要素１８を立設できるだけの面積が必要であり、その点でも膨張部２０はその全体厚みＴに対し十分な横断方向寸法Ｗ１を確保することが望ましい。
【００２６】
壁３０は、基部１６を水平方向へ撓曲する際の撓曲半径に関し内側の上段部分２４の縁部に近づけて配置すると、膨張部２０の水平方向への撓曲がさらに容易になる。しかしながらそのような構成では、逆方向への水平撓曲が困難になるので、作業者はファスナー部材１０の向きを曲げ易い方向へ逐次合せつつ物体に設置しなければならず、作業が煩雑になる危惧がある。また、水平方向へＳ状に蛇行撓曲させることも考慮すれば、やはり上記したように膨張部２０の横断方向略中央に壁３０を配置することが好ましい。
【００２７】
他方、各膨張部２０の下段部分２６に設けた一対の切欠き３２は、基部１６を水平方向へ撓曲する際に膨張部２０の下段部分２６に生じる捩じれを低減しつつ、基部１６の水平方向への撓曲を一層容易にするように作用する。その結果、特にファスナー部材１０を接着剤等により物体に固定する場合に、ファスナー部材１０を物体の所望の三次元的表面に沿って正確かつ容易に固定することが可能となる。したがって切欠き３２は、膨張部２０に壁３０を設けた構成において、水平方向撓曲時の下段部分２６の捩じれを低減する観点で特に有効と言える。
【００２８】
図５（ａ）〜（ｃ）は、それぞれ基部１６の膨張部２０の変形例を示す。これら変形例による膨張部２０は、いずれも壁３０及び切欠き３２を備えないものである。このような構成では、基部１６を水平方向へ撓曲する際に、膨張部２０の上段部分２４及び下段部分２６はいずれも空洞２８を利用して比較的容易に捩じれや撓みを生じる。その結果、上段部分表面に直立状に設置された複数の係合要素１８は、所定の直立姿勢からランダム方向に傾倒してしまう。したがって、係合相手の係合要素の構成によっては、正確な相互係合を達成することが困難となり、ファスナー部材の係合機能が低下する危惧がある。しかし、係合相手の係合要素が、例えば被着体に縫着されたループ材（図示せず）からなる場合には、ランダム方向に傾倒した複数の係合要素１８の係合片３６が比較的容易にループ材に係合するので、結果的に強固な固着力が得られる利点がある。
【００２９】
なお、膨張部２０の水平方向への撓曲を容易にするためには、上段部分２４の第２部分２４ｂを、図１、図５（ａ）及び図５（ｃ）に示すように外側へ凸に湾曲した形状として、上段部分２４が比較的容易に撓むようにすることが有利である。しかし図５（ｂ）に示すように、上段部分２４の第１部分２４ａと第３部分２４ｃとを平坦に形成して、第２部分２４ｂにて互いに鈍角又は直角に交差させる構成とすることもできる。また第３部分２４ｃは、図１及び図５（ｂ）に示すように第１部分２４ａから下段部分２６に向けて末広がりに傾斜させることもできるし、図５（ａ）に示すように下段部分２６に実質的に直交させることもできる。
【００３０】
節部２２は、図１及び図５（ａ）に示すように膨張部２０の下段部分２６の水平方向延長部分として、隣接する膨張部２０の上段部分２４の第３部分２４ｃの間に延設することができる。或いは図５（ｂ）及び図５（ｃ）に示すように、隣合う膨張部２０の上段部分２４と下段部分２６との結合部位同士を直接に連接することもできる。この場合、この連接部位が節部２２を構成する。
【００３１】
図５（ｃ）に示す変形例による膨張部２０は、上段部分２４に類似した膨出形状を有する下段部分２６を備える。この変形例による下段部分２６は、上段部分２４の第１部分２４ａに略平行に配置される平坦形状の第１部分２６ａと、基部１６の長手方向における第１部分２６ａの両端から外へ凸に湾曲して延びる一対の第２部分２６ｂと、それら第２部分２６ｂから上段部分２４に向けて末広がりに傾斜して延びる一対の第３部分２６ｃとを一体に有し、第２部分２６ｂから離れた側の第３部分２６ｃの先端で上段部分２４の第３部分２４ｃに一体に結合される。上記したように、節部２２はこの結合部位に形成される。このような構成によれば、基部１６を水平方向へ撓曲する際に、図５（ａ）、（ｂ）に示す平坦形状の下段部分２６に比べて、膨張部２０の下段部分２６がさらに容易に撓曲できるようになる。
【００３２】
ファスナー部材１０では、接着剤や両面粘着テープ等の周知の固定手段を用いて、基部１６の裏面１４を物体の立体的表面に固定することができる。或いは物体が、前述したような椅子類のコア部材である場合には、ファスナー部材１０の基部１６をコア部材に部分的に埋め込むことにより、ファスナー部材１０をコア部材の表面に固定的に設置することもできる。この場合、基部１６の膨張部２０の下段部分２６における裏面１４に、コア部材に容易に埋め込むことができる連結要素を突設することが有利である。図６（ａ）、（ｂ）は、そのような連結要素を備えた他の実施形態によるファスナー部材を示す。
【００３３】
図６（ａ）に示すファスナー部材４０は、図１に示すファスナー部材１０の基部１６に類似した基部４２を備え、さらに基部４２の膨張部４４の下段部分４６における裏面４８に一対の連結要素５０を突設して備える。なお基部４２の構成は、図１のファスナー部材１０の基部１６と実質的に同一であるので、説明を省略する。連結要素５０は、ファスナー部材４０の成形工程において、例えば基部４２の成形と同時に基部４２と同一の樹脂材料から一体成形される。各連結要素５０は、基端で裏面４８の横断方向略中央に結合される薄板状の脚部５２を備える。それら脚部５２は、裏面４８の長手方向へ延びる中心線に沿って、互いに間隔を開けて立設される。さらに、裏面４８から離れた側の各脚部５２の端部から横断方向両側へ、裏面４８に略平行に薄板状のアンカー部５４が延設される（図７参照）。
【００３４】
また、図６（ｂ）に示すファスナー部材６０は、図５（ｃ）に示すファスナー部材１０の基部１６に類似した基部６２を備え、さらに基部６２の膨張部６４の下段部分６６における裏面６８に連結要素７０を突設して備える。なお基部６２の構成は、図５（ｃ）のファスナー部材１０の基部１６と実質的に同一であるが、上段部分７２に空洞７４内へ延びる壁７６が設けられている点で異なる。連結要素７０は、裏面６８の横断方向略中央で長手方向へ延びる中心線に沿って立設される薄板状の脚部７８と、裏面６８から離れた側の脚部７８の端部から横断方向両側へ、裏面６８に略平行に延設される薄板状のアンカー部８０とを備える。
【００３５】
連結要素５０、７０を備えたファスナー部材４０、６０は、前述した椅子類のコア部材を例えば発泡性樹脂材料から成形する際に、成形主体であるコア部材の型内にインサートとして配置して、コア部材の表面に複数の係合要素５６、８２を露出させた状態でコア部材に強固に固定的に連結できる。図７は、そのようなインサート成形工程で使用されるコア部材用の型９０を、図６のファスナー部材４０と共に示す。
【００３６】
図７に示すように、好ましくはファスナー部材４０は、基部４２の膨張部４４の上段部分５８及び下段部分４６の長手方向へ延びる各縁部から、それら各縁部の略全長に渡って延設された、上段部分５８及び下段部分４６よりも小さな厚みを有した薄肉延長部５９を一体に備える。薄肉延長部５９は、ファスナー部材４０をインサート成形工程によりコア部材（図示せず）に固定する際に、後述する顕著な作用効果を奏する。以下、このインサート成形工程を図７を参照して説明する。
【００３７】
まず準備ステップとして、成形空間を画成する成形面９２の所定位置に、ファスナー部材４０を支持する支持凹部９４を設けた成形主体の型９０を用意する。支持凹部９４は、ファスナー部材４０の基部４２の長手方向寸法に略等しい長手方向寸法と、基部４２と各薄肉延長部５９とを合わせた横断方向寸法より小さい横断方向寸法とを有した略矩形の開口９６を備える。また支持凹部９４は、ファスナー部材４０の基部４２を収容する第１部分９８と、複数の係合要素５６を収容する第２部分１００とから形成される。第１部分９８は、開口９６から徐々に相互間隔を拡げて延びる長手方向の略平坦な一対の対向傾斜側壁１０２と、それら側壁１０２に交差して同一面上で略矩形環状に延びる略平坦な棚壁１０４とを有する。第２部分１００は、棚壁１０４に交差する周壁１０６を有して第１部分９８からさらに凹設される。したがって支持凹部９４の第１部分９８は、横断方向断面において開口９６から徐々に拡幅した蟻溝形状を有する。
【００３８】
支持凹部９４の一対の対向傾斜側壁１０２の間の最大間隔（すなわち両側壁１０２と棚壁１０４との両交差部における間隔）は、ファスナー部材４０の基部４２と各薄肉延長部５９とを合わせた横断方向寸法に略等しいか僅かに小さく設定される。したがって、ファスナー部材４０を支持凹部９４内に配置すると、ファスナー部材４０の各薄肉延長部５９が図示のように弾性的に撓曲して、各薄肉延長部５９の自由端が支持凹部９４の各傾斜側壁１０２に密接支持される。このとき、両傾斜側壁１０２が開口９６から凹部内奥へ向かって相互間隔を徐々に拡げるように傾斜しているので、ファスナー部材４０の各薄肉延長部５９は、棚壁１０４に向かって凸状に撓曲し、かつそれ自体の弾性復元力の反力として、各傾斜側壁１０２から棚壁１０４に接近する方向への力を受ける。この力により、ファスナー部材４０の基部４２は、支持凹部９４の内奥すなわち第２部分１００へ向かって付勢される。
【００３９】
このようにして、支持凹部９４の各傾斜側壁１０２から受ける付勢力により、基部４２の膨張部４４の上段部分５８がその両縁近傍領域にて平坦な棚壁１０４に押し付けられるので、ファスナー部材４０がその反りや撓みを自動的に修正された状態で支持凹部９４内に固定的に支持される。こうした薄肉延長部５９による撓み修正効果は、ファスナー部材４０を成形主体であるコア部材の所望の立体的表面部位に追従させるべく三次元的に撓曲させた状態で支持凹部９４内に配置しなければならない場合に、基部４２の正確な三次元的追従が得られることから特に有利なものとなる。
【００４０】
このようにしてファスナー部材４０を支持凹部９４内に支持した後、型９０の成形空間に例えば発泡性の樹脂原液を注入する。このときファスナー部材４０は、上記したように各薄肉延長部５９の弾性復元力により支持凹部９４内で固定的に保持されているので、第１部分９８に流入する樹脂原液の流動圧力を受けても移動を生じない。しかも、各薄肉延長部５９の自由端と各傾斜側壁１０２との密接、及び膨張部４４の上段部分５８の両縁近傍領域と棚壁１０４との密接により、樹脂原液が支持凹部９４の第２部分１００に浸入することは確実に防止される。その結果、樹脂片の混在によるファスナー部材４０の係合要素５６の係合機能の低下が回避される。なお、傾斜側壁１０２の代わりに、棚壁１０４に略直交する側壁を採用し、支持凹部９４内へのファスナー部材４０の装着性を向上させることもできる。
【００４１】
樹脂原液が固化して成形主体であるコア部材が成形されると、ファスナー部材４０は連結要素５０を介してコア部材に強固に固定される。その後、コア部材を型９０から脱離すると、ファスナー部材４０をその複数の係合要素５６が露出した状態で、かつ基部４２を所望の立体的表面部位に三次元的に正確に追従させた状態で固定したコア部材が得られる。なおファスナー部材４０の基部４２に設けた薄肉延長部５９は、膨張部４４の上段部分５８と下段部分４８との少なくとも一方に形成されれば、上記した作用効果が得られるものである。
【００４２】
以上、本発明に係るファスナー部材の好適な実施形態を説明したが、本発明に係るファスナー部材は上記以外の様々な形状を有することができる。
例えば係合要素は、図１に示す矢尻状頭部を有する突子形状の他に、半球状（図５（ｃ）参照）、球状、錐体状又は笠状の頭部を有する茸形や、フック形、ループ形、傘形、椰子の木形、等の多様な突子形状を有することができる。或いは係合要素として、舌（tongue）と溝（groove）との組合せ構造や、米国特許第４，８７５，２５９号に開示されるような錐体又は円錐台状の噛合可能な先細り支柱群を適用することもできる。
【００４３】
また複数の係合要素は、図１に示すような基部の膨張部の上段部分上で長手方向に沿った２列に並ぶ千鳥状配置に限らず、各列間で横断方向へ重畳する並列配置（図５（ａ）〜（ｃ）参照）とすることもできる。また、千鳥状配置及び並列配置のいずれも、長手方向に沿った３列以上の配置とすることができる。例として図８に示すファスナー部材１１０は、節部１１２によって連設された複数の膨張部１１４を有する基部１１６を備え、それら膨張部１１４の上段部分１１８における主要面１２０に、３列の千鳥状配置で立設された複数の係合要素１２２を備えるものである。ところで、本発明に係るファスナー部材は、その成形時に生じる基部の反りや撓みを可及的に低減するために、射出成形工程によって製造することが望まれるが、その場合、２列以上の並列配置では、ファスナー部材の成形型の脱離が困難となる。そのような場合には、米国特許第５，２４２，６４６号に開示される脚部型のような破壊的に脱離可能な型を使用した射出成形工程によって、基部及び係合要素を樹脂材料から一体的に形成する方法が有利である。
【００４４】
なお、本発明に係るファスナー部材の構成は、上記したように基部と係合要素とが同一の樹脂材料から一体成形されるもの（「スーパーデュアルロック」（３Ｍ社の商標名）として知られている）に適用できるだけでなく、例えばプラスチック製の基部と基部に植設される複数の樹脂製モノフィラメントからなる係合要素とを備えたもの（「デュアルロック」（３Ｍ社の商標名）として知られている）にも適用できる。また係合要素として、フックアンドループ式ファスナー（「スコッチメイト」（３Ｍ社の商標名）として知られている）に用いられるフック又はループを採用することもできる。
【００４５】
本発明に係るファスナー部材は、様々な寸法を有することができる。例として、基部を水平方向へ５０mm以上の曲率半径で撓曲させることを想定した場合の、上記各実施形態における好適な寸法を以下に列記する。膨張部２０の上段部分２４の厚みｔ１＝０．５mm〜３mm。膨張部２０の下段部分２６の厚みｔ２＝０．５mm〜３mm。節部２２の厚みｔ３＝０．５mm〜３mm。膨張部２０の上段部分２４の横断方向寸法Ｗ１＝４mm〜２０mm。膨張部２０の下段部分２６の横断方向寸法Ｗ２＝４mm〜２０mm。節部２２の横断方向寸法＝４mm〜２０mm。膨張部２０の高さ（所要面１２と裏面１４との間の距離）Ｈ＝２mm〜１０mm。膨張部２０の長さＬ１＝３mm〜４０mm。節部２２の長さＬ２＝０．５mm〜５mm。壁３０の厚みｔ４＝０．５mm〜５mm。壁３０の高さｈ１＝１mm〜９mm。切欠き３２の最大長手方向寸法ｓ＝０．５mm〜５mm。連結要素５０の脚部５２の高さｈ２＝２mm〜１０mm。脚部５２の厚みｔ５＝０．５mm〜５mm。アンカー部５４の厚みｔ６＝０．５mm〜３mm。アンカー部５４の長さＬ３＝３mm〜３０mm。アンカー部７４の横断方向寸法ｙ＝４mm〜２０mm。
【００４６】
図１に示す実施形態において、ファスナー部材１０の基部１６は、被着体の固着強度や成形主体への密着性を低下させない範囲で、被着体の触感や外観を損なわないように可及的に小形であることが望ましく、したがって横断方向寸法より大きな長手方向寸法を有する細長い帯形状とされる。基部１６の長手方向全体寸法は、例えば５０mm〜５００mmであり、各膨張部２０の長手方向寸法は、例えば３mm〜４０mm、好ましくは５mm〜２０mmである。また各膨張部２０の横断方向寸法は、例えば３mm〜３０mm、好ましくは４mm〜１０mmである。これらの寸法が上記範囲より小さいと、被着体を強固に固着することが困難となり、上記範囲より大きいと、ファスナー部材の成形時に生じる基部１６の固有の反りや撓みが、物体への固定時に修正困難なほど顕著になる傾向がある。
【００４７】
また、例えば図１に示す矢尻状頭部を有する係合要素１８では、基部主要面１２からの突出高さは、例えば１mm〜８mm、好ましくは３mm〜６mmである。この高さが上記範囲より小さいと、係合要素１８の係合機能が低下し、上記範囲より大きいと、被着体の触感や外観を損なう傾向がある。また、各係合要素１８の両面の係合片３６の先端間距離は例えば０．５mm〜２mm、脚部３４の太さは例えば０．５mm〜２mm、脚部３４の長さは例えば１mm〜５mmである。さらに、基部主要面１２上での係合要素１８の立設密度は、例えば１０本／cm²〜１００本／cm²、好ましくは２５本／cm²〜６０本／cm²である。
【００４８】
本発明に係るファスナー部材は、様々な材料から形成することができる。特に、基部の腰を維持しつつ三次元的な撓曲を容易にするために、材料の曲げ弾性率が好ましくは９８００Ｎ／cm²〜２４５０００Ｎ／cm²、特に好ましくは４９０００Ｎ／cm²〜１９６０００Ｎ／cm²の範囲にあることが要求される。このような曲げ弾性率を達成するために、ファスナー部材の好適な材料として、ポリアミド（６−ナイロン（商標）、６，６−ナイロン（商標）等）、ポリプロピレン、ポリエチレン、アイオノマー、ポリアセタール、ポリエステル（ポリエチレンテレフタレート、ポリエチレンナフタレート等）、ポリフェニレンスルフィド、ポリエーテルケトン、ポリエーテルエステル、ポリエーテルサルフォン、ポリエーテルイミド、ポリサルフォン、ポリアリレートが挙げられる。このうち特に好適な材料は、６−ナイロン（商標）、６，６−ナイロン（商標）、ポリプロピレンである。
【００４９】
またこのような樹脂材料に、カーボンブラック、グラスファイバー、酸化チタン、酸化鉄等の充填材を添加して、曲げ弾性率を好適な範囲に制御することもできる。特に好適な充填材はカーボンブラックである。この場合、カーボンブラックの含有量は、好ましくは１００重量部の樹脂に対して０．０１〜１０重量部、特に好ましくは１〜５重量部の範囲である。カーボンブラックの含有量がこの範囲より少ないと弾性率の制御が困難になる傾向があり、この範囲より多いとカーボンブラックによる潤滑効果が顕著になり、ファスナー部材を成形主体に連結する連結強度が低下する傾向がある。
【００５０】
【発明の効果】
以上の説明から明らかなように、本発明によれば、ファスナー部材の基部を構成する複数の膨張部の各々が基部の水平方向への撓曲を許容するとともに、同基部を構成する複数の節部の各々が基部の鉛直方向への撓曲を許容するので、多様な立体的表面を有する物体の所望の表面部位に、ファスナー部材を三次元的に正確に追従させて設置することが可能となる。したがって本発明によれば、多様な立体的表面を有する物体とそれを覆う被着体とを強固にかつ実質的に密接して固着できるとともに、被着体の外面の触感や外観を一層向上させることができる。
【図面の簡単な説明】
【図１】本発明の一実施形態によるファスナー部材の部分斜視図である。
【図２】図１のファスナー部材の部分断面正面図である。
【図３】図２の線 III−III に沿った断面図である。
【図４】本発明に係るファスナー部材を自動車用座席のコア部材に設置した状態を示す概略斜視図である。
【図５】（ａ）図１のファスナー部材の基部を構成する膨張部の変形例を示す部分断面図、（ｂ）同膨張部及び節部の変形例を示す部分断面図、及び（ｃ）同膨張部及び節部の変形例を示す部分断面図、である。
【図６】（ａ）本発明の他の実施形態によるファスナー部材の部分断面図、及び（ｂ）本発明のさらに他の実施形態によるファスナー部材の部分断面図、である。
【図７】図６（ａ）のファスナー部材をインサート成形工程により成形主体に固定するための成形主体の型を示す断面図である。
【図８】本発明のさらに他の実施形態によるファスナー部材の部分平面図である。
【符号の説明】
１２…主要面
１４…裏面
１６…基部
１８…係合要素
２０…膨張部
２２…節部
２４…上段部分
２６…下段部分
２８…空洞
３０…壁
３２…切欠き
３８…コア部材
５０、７０…連結要素
５２、７８…脚部
５４、８０…アンカー部
５９…薄肉延長部
９０…型[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a face-to-face engagement type fastener member including a base portion having a main surface and a back surface opposite to the main surface, and a plurality of engagement elements provided on the main surface of the base portion.
[0002]
[Prior art]
In various fixtures and furniture such as vehicle seats, office or home chairs, mattresses, etc., for example, on the surface of a core member having a cushioning property made of a foamed resin material, from fabric or leather There are those with a flexible cover member attached. In this kind of fixtures and furniture, it is necessary to firmly fix the cover member to the core member so that the cover member does not loosen or shift during use, and as a fixing means therefor, the main surface of the flat base portion It is known to use a face-engagement type fastener member (so-called surface fastener) in which a plurality of engagement elements are arranged.
[0003]
When using a face-to-face engagement type fastener member, the fastener member is fixedly installed at a predetermined position on the surface of the core member, and a corresponding engagement element that can be engaged with the engagement element group of the fastener member is provided on the back surface of the cover member. The cover member can be fixed to the core member with relative ease by forming the cover member and covering the core member with the cover member and then pressing the two engaging elements together. Fastener members used for such purposes include those integrally molded from a resin material and those formed by implanting a large number of resin monofilaments on a fabric or resin base. In some cases, for the purpose of firmly fixing the base to the core member, for example, a connecting element that can be embedded in the core member can be provided on the back surface of the base.
[0004]
Further, the fastener member as the fixing means for fixing the cover member to the core member is as much as possible within a range in which the fixing strength and adhesion of the cover member are not lowered so as not to impair the tactile sensation and appearance of the surface of the fixture such as a seat. It is desirable to be small. Especially in automobile seats, since the load of the seated person moves frequently on the seat, a sufficient fixing strength is required, and in order to reduce the tiredness of the seated person, a high level of comfort that eliminates the feeling of foreign objects is provided. Therefore, a fastener member having an elongated band shape that can be disposed along the groove portion provided on the surface of the core member or the seam of the cover member is effectively used.
[0005]
As a fastener member that can be suitably used for such a purpose, Japanese Patent Laid-Open No. 9-224720 discloses a fastener member that can be fixedly installed on a molding main body (for example, the core member) by an insert molding process. This fastener member can be fixedly connected to the molding body in a state where the engaging element is exposed on the surface of the molding body by embedding the coupling element provided on the back surface of the belt-shaped base portion in the molding body at the time of insert molding.
[0006]
Further, Japanese Patent Application Laid-Open No. 9-224720 is erected along a center line extending in the longitudinal direction of the back surface of the base so that the fastener member can be arranged in a desired curved shape corresponding to the outer shape of the fixture such as a seat. A fastener member having a connecting element comprising a wall-like leg portion and an anchor portion extending in parallel to the base portion on both sides in the transverse direction from the free end of the leg portion is disclosed. In this fastener member, the base portion balanced in terms of material strength and the anchor portion of the connecting element are coupled to each other at a predetermined interval via the leg portion of the connecting element, so that the base portion is horizontally aligned with the main surface of the base portion. When attempting to bend in a substantially parallel direction), stress is applied to the base and anchor portions in a substantially uniform manner, and as a result, the base can be easily moved in the horizontal direction without being twisted or wavy. Can bend.
[0007]
If the base member is fixed to the molding main body in a state where the fastener member is arranged in a desired curved shape and twisted or waved, the adherend (for example, the cover member) is fixed to the molding main body. When this is done, it becomes difficult for the engagement elements on the base main surface to accurately engage the corresponding engagement elements of the adherend, and the engagement function of the fastener member is reduced, and the outer surface of the adherend is tactile. There is a risk of appearance deterioration. In this respect, the fastener member provided with the connecting element having the stress balance function described above can be easily bent in the horizontal direction without the base portion being twisted or bent in a wave shape, so that the engagement function of the fastener member is reduced. In addition, there is an effect of improving the touch and appearance of the adherend.
[0008]
[Problems to be solved by the invention]
However, the fastener member provided with the connecting element having the stress balance function described above facilitates the bending of the base in the horizontal direction due to the shape of the connecting element, but the vertical direction of the base (the main surface of the base). It has been found that bending in a direction substantially orthogonal to the above becomes difficult. Therefore, in this fastener member, it is difficult to accurately follow and arrange various three-dimensional shapes on the surface of the molding main body, that is, to arrange the base main surface to follow the three-dimensional surface of the molding main body substantially in parallel. In such a variety of three-dimensional surface portions, not only the molding main body and the adherend (for example, the core member and the cover member described above) are not sufficiently fixed, but also the touch and appearance of the outer surface of the adherend are not satisfactory. There is a risk of deterioration. Such a fear is not limited to the fastener member fixed to the molding main body by insert molding, but also occurs in the fastener member fixed to the surface of the object such as the core member by an adhesive or the like in a subsequent process.
[0009]
Accordingly, an object of the present invention is to provide not only the bending of the base portion in the horizontal direction but also the bending of the base portion in the vertical direction in a face-to-face engagement type fastener member used as a means for mutually fixing the object and the adherend covering the object. Easy to tune and accurately follow the various three-dimensional surface shapes of the object so that the object and the adherend can be firmly fixed, and the touch and appearance of the outer surface of the adherend can be improved. It is providing the fastener member which can be improved.
[0010]
[Means for Solving the Problems]
In order to achieve the above object, the present invention according to claim 1 includes a strip-shaped base portion having a main surface and a back surface opposite to the main surface, and a plurality of engagement elements provided on the main surface of the base portion. In the face-to-face engagement type fastener member, the base portion includes a plurality of inflatable portions spaced apart from each other in the longitudinal direction and a plurality of node portions that connect the adjacent inflatable portions to each other. An upper portion having a main surface and a lower portion having a back surface are provided so as to be spaced apart from each other so that a cavity is formed between the two portions, and the upper portion and the lower portion are at least both ends of the expansion portion in the longitudinal direction of the base portion. The fastener members are characterized in that they are converged together and integrally joined to each other, and each of the plurality of nodes is formed at a converged joint portion of the upper and lower portions at both ends of the inflatable portion.
[0011]
According to a second aspect of the present invention, in the fastener member according to the first aspect, the cavity formed between the upper stage portion and the lower stage portion of the inflating portion is crossed between the upper stage portion and the lower stage portion. A fastener member that penetrates in a direction and opens is provided.
[0012]
A third aspect of the present invention is the fastener member according to the first or second aspect, further comprising a coupling element provided on the back surface of the lower part of the inflating portion, and the coupling element embedded in the molding main body by an insert molding process. A fastener member configured to be fixedly coupled to the molding body in a state where the engagement element is exposed on the surface of the molding body is provided.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail based on preferred embodiments with reference to the accompanying drawings. In each figure, the same or similar components are denoted by the same reference numerals.
1 to 3 show a fastener member 10 according to an embodiment of the present invention. The fastener member 10 includes a strip-like base portion 16 having a substantially flat and parallel main surface 12 and a back surface 14, and a plurality of engagement elements 18 erected on the main surface 12 of the base portion 16 with a predetermined spacing. Is provided. The fastener member 10 is a face-to-face engagement type fastener member made of, for example, an integrally molded product of a resin material. The fastener member 10 is fixedly installed on a three-dimensional surface of an object, and is an engagement partner provided on an adherend that covers the object. It is detachably fixed to the engaging element in a face-to-face manner.
[0014]
The strip-shaped base portion 16 includes a plurality of inflating portions 20 that are linearly spaced apart from each other in the longitudinal direction, and a plurality of node portions 22 that interconnect the inflating portions 20 adjacent in the longitudinal direction. Formed. Each inflatable portion 20 includes an upper-stage portion 24 having a surface portion constituting the main surface 12 of the base portion 16, and a flat-shaped lower portion 26 having a surface portion constituting the back surface 14 of the base portion 16. Are spaced apart from each other such that a cavity 28 is defined between the two portions 24, 26. The upper stage portion 24 and the lower stage portion 26 converge at both ends of the expansion portion 20 in the longitudinal direction of the base portion 16 and are integrally coupled to each other. As used in this specification, the term `` converge '' means that only one of the upper part and the lower part is curved or bent at both ends and extends toward the other as in this embodiment, In addition, as in a modified example (FIG. 5C) described later, both the upper stage portion and the lower stage portion are curved or bent at both ends thereof and extend toward each other.
[0015]
In the illustrated embodiment, the upper portion 24 extends in a curved manner outwardly from both ends of the flat first portion 24 a disposed substantially parallel to the lower portion 26 and the first portion 24 a in the longitudinal direction of the base portion 16. A pair of second portions 24b and a pair of third portions 24c extending from the second portions 24b toward the lower portion 26 so as to incline toward the lower end are integrally formed, and the third portion on the side away from the second portion 24b. The lower end portion 26 is integrally coupled with the tip of the portion 24c. Therefore, the illustrated upper surface of the first portion 24a of the upper stage portion 24 of each inflating portion 20 constitutes the main surface 12 of the base portion 16, and the plurality of engaging elements 18 are arranged at a predetermined spacing on the upper surface of the first portion 24a. Established.
[0016]
The upper stage portion 24 of each expansion portion 20 is provided with a wall 30 that extends integrally from the first portion 24a, the second portion 24b, and the third portion 24c into the cavity 28. The wall 30 is formed in an upright state with respect to the upper stage portion 24 along the longitudinal direction at substantially the center of the inflating portion 20 in the transverse direction of the base portion 16. As shown, the wall 30 is not connected to the lower portion 26, so that the cavity 28 opens between the wall 30 provided in the upper portion 24 and the lower portion 26 in the transverse direction of the base 16. It is preferable. However, on the assumption that the flexibility of the base portion 16 is not impaired, the wall 30 can be connected to the lower portion 26 or the cavity 28 can be prevented from opening in the direction crossing the base portion.
[0017]
A pair of notches 32 extending in the transverse direction is provided at the lower center portion 26 of each inflatable portion 20 at a substantially center in the longitudinal direction of the base portion 16. The notches 32 are inwardly inscribed from both edges extending in the longitudinal direction of the lower portion 26 and are opposed to each other with a part of the lower portion 26 remaining therebetween. Preferably, each notch 32 is formed so as to gradually expand from the center of the lower portion 26 toward the edge.
[0018]
Each node 22 is formed at a converging joint portion between the upper and lower portions 24 and 26 of the inflating portions 20 adjacent in the longitudinal direction. In the illustrated embodiment, each node 22 has a shape such that the lower stage portion 26 of each expansion portion 20 extends horizontally in the longitudinal direction, so that the back surface 14 of the base portion 16 includes all the expansion portions 20 and the node portions 22. It is a flat surface that extends continuously in the longitudinal direction. The node portion 22 is formed between the two inflatable portions 20 over the entire length of the base portion 16 in the transverse direction. Thus, since the node part 22 has thickness thinner than the whole thickness of the expansion part 20, and connects the expansion part 20, it acts as a hinge part with respect to each expansion part 20 so that it may mention later.
[0019]
In the molding process of the fastener member 10, the plurality of engagement elements 18 are integrally molded from the same resin material as that of the base 16 at the same time as the base 16 is molded, for example. Each engagement element 18 includes a leg portion 34 projecting substantially upright from the main surface 12 of the base portion 16, and a plurality of engagement pieces 36 projecting sideways in the vicinity of the distal end of the leg portion 34. Therefore, in the fastener member 10, the plurality of engagement elements 18 are engaged with the corresponding engagement elements of the engagement counterpart member by the engagement pieces 36 at the distal ends.
[0020]
As shown in FIGS. 1 and 3, the plurality of engaging elements 18 are arranged along two substantially parallel rows extending in the longitudinal direction of the base on the first portion 24 a of the upper stage portion 24 of each expansion portion 20, and The positions of the engagement elements 18 between the rows are shifted from each other by half the arrangement interval in the longitudinal direction, and are arranged in a so-called zigzag pattern. Such an arrangement allows the band-shaped fastener member 10 to secure a sufficient fixing strength with respect to the mating member with as little resin as possible, and facilitates die-cutting when the fastener member 10 is molded. It is advantageous.
[0021]
In the fastener member 10 having the above-described configuration, since the cavity 28 is formed between the upper stage portion 24 and the lower stage portion 26 of each inflating portion 20, the base portion 16 of the fastener member 10 is parallel to the horizontal direction, that is, the main surface 12. When bending in the direction, stress is distributed and applied to the upper portion 24 and the lower portion 26 of each inflating portion 20, and both portions 24, 26 are substantially balanced under mutual restraint so that the cavity 28 is used to cause twisting and bending. As a result, since each inflatable portion 20 is bent relatively easily as a whole including the upper portion 24 and the lower portion 26, the base portion 16 of the fastener member 10 can be easily moved horizontally along a desired curve. Will be bent. That is, the base portion 16 of the fastener member 10 has a plurality of inflating portions spaced apart in the longitudinal direction due to twisting or bending of the base portion that occurs when one flat base portion is bent in a horizontal direction with respect to its main surface. Therefore, it is easy to bend in the horizontal direction in a state where the amount of twisting and bending of the entire base portion is reduced.
[0022]
Furthermore, since the adjacent expansion part 20 is connected by the thin node part 22, the base part 16 of the fastener member 10 is bent when bending the base part 16 of the fastener member 10 to the direction orthogonal to the main surface 12, ie, the main surface 12. The stress is dispersed and applied to each node 22 and the node 22 itself is deformed, so that the expansion portion 20 can be relatively swung around the node 22. Therefore, the base 16 is easily bent in the vertical direction as a whole by the hinge action of the plurality of nodes 22. At this time, most of the force for bending the base portion 16 in the vertical direction is spent on the deformation of the node portion 22 and hardly exerted on the expansion portion 20.
[0023]
Thus, according to the fastener member 10, each of the plurality of inflating portions 20 constituting the base portion 16 allows the base portion 16 to bend in the horizontal direction, and each of the plurality of node portions 22 is in the vertical direction of the base portion 16. Therefore, the base portion 16 can be installed in a desired three-dimensionally following manner on a desired surface portion of an object having various three-dimensional surfaces. In particular, in fixtures such as chairs, as a cover member fixing means when a flexible cover member made of fabric, leather, or the like is attached to various three-dimensional surfaces of a core member made of a foamed resin material molded body If the fastener member 10 is used, the fastener member 10 can be installed by accurately following the base 16 three-dimensionally along a desired portion of the surface of the core member that does not touch the touched person's body or less frequently. Thus, the cover member can be securely fixed to the core member in close contact with each other. Moreover, since the tactile sensation and appearance of the outer surface of the cover member are not slightly impaired at the portion where the cover member is fixed to the core member, it provides a high level of comfort and a high quality feeling to the seated person. it can. For example, as shown in FIG. 4, such an operational effect is a cover that is three-dimensionally sewn in accordance with the shape of the core member 38 of the seat portion in a bucket seat type automobile seat having a three-dimensional shape that conforms to the body shape of the seated person. This is particularly advantageous when the fastener member 10 is installed along a three-dimensionally extending seam of a member (not shown).
[0024]
Further supplementally, the wall 30 provided in the upper stage portion 24 of each inflating portion 20 acts to suppress twisting of the upper portion 24, particularly the first portion 24 a, when the base portion 16 is bent in the horizontal direction. Therefore, particularly when the wall 30 is not connected to the lower stage portion 26, the lower stage portion 26 is more greatly twisted and bent than the upper stage portion 24. As a result, the amount of twist and deflection of the entire base portion is reduced. It is possible to bend the base portion 16 in the horizontal direction without increasing the number of engagement elements 18 as much as possible in a predetermined upright posture. Thus, the fastener member 10 fixedly installed along the desired three-dimensional surface of the object can reduce the engagement function with the engagement element of the engagement partner provided on the adherend. In addition, the touch and appearance of the adherend are improved. Further, the wall 30 acts to prevent unnecessary deformation of the upper stage portion 24 of the inflating portion 20, so that the entire waist of the base portion 16 of the fastener member 10 is strengthened to install the object and to the adherend. Engagement work with the provided engagement partner engagement element is facilitated.
[0025]
As shown in FIG. 3, the twist suppression action by the wall 30 includes the transverse dimension W1 of the upper portion 24 of the inflating portion 20, the distance between the main surface 12 and the back surface 14, that is, the thickness T of the entire inflating portion, and This is particularly noticeable when the transverse dimension W2 of the lower portion 26 of the inflating portion 20 is substantially equal to each other. When the overall thickness T of the inflatable portion 20 is larger than the transverse dimensions W1 and W2, it is easy to bend in the horizontal direction, but the strength of the waist as a whole of the fastener member 10 is reduced. When installed on an object, it tends to be difficult to handle. Further, the main surface 12 needs to have an area sufficient to stand up a sufficient number of engaging elements 18 to exert a desired engaging force on the fastener member 10. It is desirable to ensure a sufficient transverse dimension W1.
[0026]
When the wall 30 is disposed close to the edge of the inner upper stage portion 24 with respect to the bending radius when the base portion 16 is bent in the horizontal direction, the expansion portion 20 can be bent in the horizontal direction more easily. However, in such a configuration, since horizontal bending in the reverse direction becomes difficult, the operator must install the fastener member 10 on the object while sequentially aligning the direction of the fastener member 10 in an easy-to-bend direction, and the work becomes complicated. There is a fear. In consideration of the meandering flexure in the S shape in the horizontal direction, it is preferable that the wall 30 is disposed at the substantially center in the transverse direction of the inflating portion 20 as described above.
[0027]
On the other hand, the pair of notches 32 provided in the lower portion 26 of each inflatable portion 20 reduces the twist generated in the lower portion 26 of the inflatable portion 20 when the base portion 16 is bent in the horizontal direction, and the horizontal portion of the base portion 16. It acts to further facilitate bending in the direction. As a result, particularly when the fastener member 10 is fixed to an object with an adhesive or the like, the fastener member 10 can be accurately and easily fixed along a desired three-dimensional surface of the object. Therefore, the notch 32 can be said to be particularly effective in the configuration in which the wall 30 is provided in the inflating portion 20 from the viewpoint of reducing the twist of the lower portion 26 during horizontal bending.
[0028]
FIGS. 5A to 5C show modified examples of the expanding portion 20 of the base portion 16. None of the inflatable portions 20 according to these modifications includes the wall 30 and the notch 32. In such a configuration, when the base portion 16 is bent in the horizontal direction, the upper stage portion 24 and the lower stage portion 26 of the inflating portion 20 are both twisted and bent relatively easily using the cavity 28. As a result, the plurality of engaging elements 18 installed upright on the surface of the upper stage portion tilt in a random direction from a predetermined upright posture. Therefore, depending on the configuration of the engagement element of the engagement partner, it is difficult to achieve accurate mutual engagement, and the engagement function of the fastener member may be reduced. However, when the engagement element of the engagement partner is made of, for example, a loop material (not shown) sewn on the adherend, the engagement pieces 36 of the plurality of engagement elements 18 inclined in the random direction are formed. Since it engages with the loop material relatively easily, there is an advantage that a strong fixing force can be obtained as a result.
[0029]
In order to facilitate the bending of the expanding portion 20 in the horizontal direction, the second portion 24b of the upper portion 24 is moved outward as shown in FIGS. 1, 5A, and 5C. It is advantageous for the upper portion 24 to bend relatively easily as a convexly curved shape. However, as shown in FIG. 5 (b), the first portion 24a and the third portion 24c of the upper portion 24 may be formed flat and intersected at an obtuse angle or a right angle at the second portion 24b. it can. Further, the third portion 24c can be inclined from the first portion 24a toward the lower step portion 26 as shown in FIGS. 1 and 5B, and the lower portion can be inclined as shown in FIG. 5A. 26 may be substantially orthogonal.
[0030]
As shown in FIGS. 1 and 5A, the node portion 22 extends as a horizontal extension portion of the lower portion 26 of the expansion portion 20 between the third portions 24 c of the upper portion 24 of the adjacent expansion portion 20. can do. Or as shown in FIG.5 (b) and FIG.5 (c), the coupling | bond part of the upper stage part 24 and the lower stage part 26 of the adjacent expansion part 20 can also be connected directly. In this case, this connecting portion constitutes the node portion 22.
[0031]
The inflatable portion 20 according to the modification shown in FIG. 5C includes a lower stage portion 26 having a bulging shape similar to the upper stage portion 24. The lower stage portion 26 according to this modification has a flat first portion 26 a disposed substantially parallel to the first portion 24 a of the upper stage portion 24, and protrudes outward from both ends of the first portion 26 a in the longitudinal direction of the base portion 16. A pair of second portions 26b extending in a curved manner and a pair of third portions 26c extending from the second portions 26b toward the upper portion 24 so as to incline toward the upper end are integrally separated from the second portion 26b. At the tip of the third portion 26c on the side, it is integrally coupled to the third portion 24c of the upper stage portion 24. As described above, the node portion 22 is formed at this coupling site. According to such a configuration, when the base portion 16 is bent in the horizontal direction, the lower portion 26 of the inflating portion 20 is further compared to the flat lower portion 26 shown in FIGS. 5 (a) and 5 (b). It becomes possible to bend easily.
[0032]
In the fastener member 10, the back surface 14 of the base portion 16 can be fixed to the three-dimensional surface of the object using a known fixing means such as an adhesive or a double-sided adhesive tape. Alternatively, when the object is a core member of a chair as described above, the fastener member 10 is fixedly installed on the surface of the core member by partially embedding the base portion 16 of the fastener member 10 in the core member. You can also In this case, it is advantageous to project a connecting element that can be easily embedded in the core member on the back surface 14 of the lower portion 26 of the expanding portion 20 of the base portion 16. 6 (a) and 6 (b) show a fastener member according to another embodiment provided with such a connecting element.
[0033]
The fastener member 40 shown in FIG. 6A includes a base portion 42 similar to the base portion 16 of the fastener member 10 shown in FIG. 1, and a pair of connecting elements 50 on the back surface 48 of the lower portion 46 of the expansion portion 44 of the base portion 42. Is provided. The configuration of the base portion 42 is substantially the same as that of the base portion 16 of the fastener member 10 shown in FIG. In the molding process of the fastener member 40, the connecting element 50 is integrally molded from the same resin material as that of the base 42, for example, simultaneously with the molding of the base 42. Each connecting element 50 includes a thin plate-like leg portion 52 that is coupled at the proximal end to substantially the center in the transverse direction of the back surface 48. The leg portions 52 are erected at intervals from each other along a center line extending in the longitudinal direction of the back surface 48. Further, a thin plate-like anchor portion 54 is extended substantially in parallel to the back surface 48 from the end of each leg portion 52 on the side away from the back surface 48 to both sides in the transverse direction (see FIG. 7).
[0034]
A fastener member 60 shown in FIG. 6B includes a base portion 62 similar to the base portion 16 of the fastener member 10 shown in FIG. 5C, and further on the back surface 68 of the lower step portion 66 of the expansion portion 64 of the base portion 62. A connecting element 70 is provided in a protruding manner. The configuration of the base portion 62 is substantially the same as the base portion 16 of the fastener member 10 of FIG. 5C, but differs in that a wall 76 extending into the cavity 74 is provided in the upper stage portion 72. The connecting element 70 has a thin plate-like leg portion 78 erected along a center line extending in the longitudinal direction at substantially the center in the transverse direction of the back surface 68 and a transverse direction from the end of the leg portion 78 on the side away from the back surface 68. On both sides, a thin plate-like anchor portion 80 extending substantially parallel to the back surface 68 is provided.
[0035]
The fastener members 40, 60 provided with the connecting elements 50, 70 are arranged as inserts in the mold of the core member, which is the main molding body, when the core member of the chairs described above is molded from, for example, a foamable resin material. The plurality of engaging elements 56 and 82 are exposed on the surface of the core member, and can be firmly and firmly connected to the core member. FIG. 7 shows a core member mold 90 used in such an insert molding process together with the fastener member 40 of FIG.
[0036]
As shown in FIG. 7, the fastener member 40 preferably extends from each edge portion extending in the longitudinal direction of the upper portion 58 and the lower portion portion 46 of the expansion portion 44 of the base portion 42 over substantially the entire length of each edge portion. The thin extension 59 having a smaller thickness than the upper part 58 and the lower part 46 is integrally provided. The thin extension 59 has a remarkable effect that will be described later when the fastener member 40 is fixed to a core member (not shown) by an insert molding process. Hereinafter, this insert molding process will be described with reference to FIG.
[0037]
First, as a preparatory step, a mold 90 having a molding main body provided with a support recess 94 for supporting the fastener member 40 at a predetermined position of the molding surface 92 that defines the molding space is prepared. The support recess 94 is a substantially rectangular shape having a longitudinal dimension substantially equal to the longitudinal dimension of the base 42 of the fastener member 40 and a transverse dimension smaller than the transverse dimension of the base 42 and each thin extension 59 combined. An opening 96 is provided. The support recess 94 is formed by a first portion 98 that accommodates the base portion 42 of the fastener member 40 and a second portion 100 that accommodates the plurality of engaging elements 56. The first portion 98 has a pair of substantially flat opposite inclined side walls 102 extending in the longitudinal direction extending gradually from the opening 96, and a substantially flat shape extending in a substantially rectangular ring shape on the same plane. And a shelf wall 104. The second portion 100 has a peripheral wall 106 that intersects the shelf wall 104 and is further recessed from the first portion 98. Accordingly, the first portion 98 of the support recess 94 has a dovetail shape that gradually widens from the opening 96 in the cross section in the transverse direction.
[0038]
The maximum distance between the pair of opposed inclined side walls 102 of the support recess 94 (that is, the distance at the intersections of the side walls 102 and the shelf wall 104) is the sum of the base portion 42 of the fastener member 40 and each thin extension 59. It is set to be approximately equal to or slightly smaller than the transverse dimension. Therefore, when the fastener member 40 is disposed in the support recess 94, each thin extension 59 of the fastener member 40 is elastically bent as shown in the figure, and the free end of each thin extension 59 is in each support recess 94. The inclined side wall 102 is closely supported. At this time, since both the inclined side walls 102 are inclined so as to gradually widen the mutual distance from the opening 96 toward the inner side of the recess, each thin extension 59 of the fastener member 40 is convex toward the shelf wall 104. And a force in a direction approaching the shelf wall 104 from each inclined side wall 102 as a reaction force of its own elastic restoring force. By this force, the base portion 42 of the fastener member 40 is urged toward the inner side of the support recess 94, that is, the second portion 100.
[0039]
In this way, the upper stage portion 58 of the expanding portion 44 of the base portion 42 is pressed against the flat shelf wall 104 in the vicinity of both edges by the biasing force received from each inclined side wall 102 of the support recessed portion 94, and thus the fastener member 40. Is fixedly supported in the support recess 94 in a state in which the warpage and deflection are automatically corrected. Such a bending correction effect by the thin extension 59 must be arranged in the support recess 94 in a state in which the fastener member 40 is bent three-dimensionally so as to follow a desired three-dimensional surface portion of the core member which is a molding main body. If this is the case, it is particularly advantageous because accurate three-dimensional tracking of the base 42 is obtained.
[0040]
After supporting the fastener member 40 in the support recess 94 in this way, for example, a foamable resin stock solution is injected into the molding space of the mold 90. At this time, since the fastener member 40 is fixedly held in the support recess 94 by the elastic restoring force of each thin extension 59 as described above, the fastener member 40 receives the flow pressure of the resin stock solution flowing into the first portion 98. Does not move. Moreover, due to the close contact between the free end of each thin extension 59 and each inclined side wall 102 and the close contact between the region near both edges of the upper stage portion 58 of the inflating portion 44 and the shelf wall 104, the undiluted resin solution is second in the support recess 94. Intrusion into the part 100 is reliably prevented. As a result, a decrease in the engagement function of the engagement element 56 of the fastener member 40 due to the mixture of resin pieces is avoided. Instead of the inclined side wall 102, a side wall substantially orthogonal to the shelf wall 104 can be employed to improve the mounting property of the fastener member 40 in the support recess 94.
[0041]
When the resin stock solution is solidified and the core member, which is the main molding body, is formed, the fastener member 40 is firmly fixed to the core member via the connecting element 50. Thereafter, when the core member is detached from the mold 90, the fastener member 40 is in a state in which the plurality of engaging elements 56 are exposed, and the base 42 is made to accurately follow the desired three-dimensional surface portion in three dimensions. A core member fixed in (1) is obtained. In addition, if the thin extension part 59 provided in the base part 42 of the fastener member 40 is formed in at least one of the upper stage part 58 and the lower stage part 48 of the expansion part 44, the above-mentioned effect can be obtained.
[0042]
As mentioned above, although preferred embodiment of the fastener member which concerns on this invention was described, the fastener member which concerns on this invention can have various shapes other than the above.
For example, the engaging element may have a hemispherical shape (see FIG. 5 (c)), a spherical shape, a cone shape, or a shade-shaped head shape having a cap shape in addition to the projecting shape having an arrowhead-shaped head shown in FIG. , Hook shape, loop shape, umbrella shape, palm tree shape, etc. Alternatively, as an engaging element, a combination structure of a tongue and a groove, or a group of tapered struts that can be engaged with each other in a cone shape or a truncated cone shape as disclosed in US Pat. No. 4,875,259 is used. It can also be applied.
[0043]
Further, the plurality of engaging elements are not limited to the staggered arrangement arranged in two rows along the longitudinal direction on the upper portion of the base inflatable portion as shown in FIG. (See FIGS. 5A to 5C). Further, both the staggered arrangement and the parallel arrangement can be arranged in three or more rows along the longitudinal direction. For example, the fastener member 110 shown in FIG. 8 includes a base portion 116 having a plurality of inflatable portions 114 connected to each other by node portions 112, and three rows of staggered patterns on the main surface 120 of the upper stage portion 118 of the inflatable portions 114. A plurality of engaging elements 122 erected in the arrangement are provided. By the way, the fastener member according to the present invention is desirably manufactured by an injection molding process in order to reduce as much as possible the warping or bending of the base portion that occurs at the time of molding. Then, it becomes difficult to remove the mold of the fastener member. In such a case, the base and the engaging element are made of resin material by an injection molding process using a destructively removable mold such as the leg mold disclosed in US Pat. No. 5,242,646. It is advantageous to form it in one piece.
[0044]
The configuration of the fastener member according to the present invention is known as one in which the base and the engaging element are integrally molded from the same resin material as described above ("Super Dual Lock" (trade name of 3M Company). For example, it is known as a “dual lock” (trade name of 3M Co.) having a base made of plastic and an engaging element made of a plurality of resin monofilaments implanted in the base. It can also be applied. In addition, a hook or loop used for a hook-and-loop fastener (known as “Scotch Mate” (trade name of 3M)) may be employed as the engaging element.
[0045]
The fastener member according to the present invention can have various dimensions. As an example, suitable dimensions in the above embodiments when assuming that the base is bent in the horizontal direction with a curvature radius of 50 mm or more are listed below. The thickness t1 of the upper part 24 of the inflating part 20 is 0.5 mm to 3 mm. The thickness t2 of the lower part 26 of the inflating part 20 = 0.5 mm to 3 mm. The thickness t3 of the node 22 is 0.5 mm to 3 mm. The transverse dimension W1 of the upper stage portion 24 of the inflating part 20 = 4 mm to 20 mm. The transverse dimension W2 of the lower part 26 of the inflating part 20 = 4 mm to 20 mm. The transverse dimension of the node 22 = 4 mm to 20 mm. The height of the expansion part 20 (distance between the required surface 12 and the back surface 14) H = 2 mm to 10 mm. The length L1 of the inflating part 20 is 3 mm to 40 mm. The length L2 of the node 22 is 0.5 mm to 5 mm. The thickness t4 of the wall 30 = 0.5 mm to 5 mm. The height h1 of the wall 30 is 1 mm to 9 mm. The maximum longitudinal dimension s of the notch 32 is 0.5 mm to 5 mm. The height h2 of the leg portion 52 of the connecting element 50 = 2 mm to 10 mm. The thickness t5 of the leg 52 is 0.5 mm to 5 mm. The thickness t6 of the anchor portion 54 is 0.5 mm to 3 mm. The length L3 of the anchor portion 54 is 3 mm to 30 mm. The transverse dimension y of the anchor portion 74 is 4 mm to 20 mm.
[0046]
In the embodiment shown in FIG. 1, the base portion 16 of the fastener member 10 is as much as possible so as not to impair the tactile sensation and appearance of the adherend within a range that does not lower the adherence strength of the adherend and the adhesion to the molding body. It is desirable to have an elongated strip shape having a longitudinal dimension greater than the transverse dimension. The overall dimension in the longitudinal direction of the base portion 16 is, for example, 50 mm to 500 mm, and the longitudinal dimension of each inflatable portion 20 is, for example, 3 mm to 40 mm, preferably 5 mm to 20 mm. Moreover, the transverse direction dimension of each expansion part 20 is 3 mm-30 mm, for example, Preferably it is 4 mm-10 mm. If these dimensions are smaller than the above range, it is difficult to firmly adhere the adherend, and if it is larger than the above range, the inherent warpage or deflection of the base portion 16 that occurs when the fastener member is molded may become difficult when fixed to the object. The more difficult it is to correct, the more prominent it becomes.
[0047]
For example, in the engagement element 18 having an arrowhead-shaped head shown in FIG. 1, the protruding height from the base main surface 12 is, for example, 1 mm to 8 mm, preferably 3 mm to 6 mm. When this height is smaller than the above range, the engagement function of the engagement element 18 is lowered, and when it is larger than the above range, the touch and appearance of the adherend tend to be impaired. Further, the distance between the tips of the engagement pieces 36 on both surfaces of each engagement element 18 is, for example, 0.5 mm to 2 mm, the thickness of the leg portion 34 is, for example, 0.5 mm to 2 mm, and the length of the leg portion 34 is, for example, 1 mm to 5 mm. Further, the standing density of the engaging elements 18 on the base main surface 12 is, for example, 10 pieces / cm. ² ~ 100 / cm ² , Preferably 25 / cm ² ~ 60 / cm ² It is.
[0048]
The fastener member according to the present invention can be formed from various materials. In particular, the material preferably has a flexural modulus of 9800 N / cm to facilitate three-dimensional bending while maintaining the waist of the base. ² ~ 245000N / cm ² , Particularly preferably 49000 N / cm ² ~ 196000N / cm ² It is required to be in the range. In order to achieve such a flexural modulus, as a suitable material for the fastener member, polyamide (6-nylon (trademark), 6,6-nylon (trademark), etc.), polypropylene, polyethylene, ionomer, polyacetal, polyester ( Polyethylene terephthalate, polyethylene naphthalate, etc.), polyphenylene sulfide, polyether ketone, polyether ester, polyether sulfone, polyether imide, polysulfone and polyarylate. Among these, particularly preferable materials are 6-nylon (trademark), 6,6-nylon (trademark), and polypropylene.
[0049]
In addition, a filler such as carbon black, glass fiber, titanium oxide, and iron oxide can be added to such a resin material to control the flexural modulus within a suitable range. A particularly preferred filler is carbon black. In this case, the carbon black content is preferably 0.01 to 10 parts by weight, particularly preferably 1 to 5 parts by weight, based on 100 parts by weight of the resin. If the carbon black content is less than this range, the elastic modulus tends to be difficult to control. If the carbon black content is more than this range, the lubricating effect of the carbon black becomes remarkable, and the connection strength for connecting the fastener member to the molding body decreases. Tend to.
[0050]
【The invention's effect】
As is clear from the above description, according to the present invention, each of the plurality of inflating portions constituting the base portion of the fastener member allows the base portion to bend in the horizontal direction, and the plurality of nodes constituting the base portion. Since each of the parts allows the base to bend in the vertical direction, it is possible to install the fastener member in a three-dimensionally accurate manner on a desired surface portion of an object having various three-dimensional surfaces. Become. Therefore, according to the present invention, an object having various three-dimensional surfaces and an adherend covering the object can be firmly and substantially closely fixed, and the tactile sensation and appearance of the outer surface of the adherend are further improved. be able to.
[Brief description of the drawings]
FIG. 1 is a partial perspective view of a fastener member according to an embodiment of the present invention.
2 is a partial cross-sectional front view of the fastener member of FIG. 1. FIG.
FIG. 3 is a sectional view taken along line III-III in FIG.
FIG. 4 is a schematic perspective view showing a state in which a fastener member according to the present invention is installed on a core member of an automobile seat.
5A is a partial cross-sectional view showing a modified example of the inflating portion that constitutes the base of the fastener member of FIG. 1, FIG. 5B is a partial cross-sectional view showing a modified example of the inflating portion and the node portion, and FIG. It is a fragmentary sectional view which shows the modification of the expansion | swelling part and a node part.
6A is a partial cross-sectional view of a fastener member according to another embodiment of the present invention, and FIG. 6B is a partial cross-sectional view of a fastener member according to still another embodiment of the present invention.
FIG. 7 is a cross-sectional view showing a mold of a molding main body for fixing the fastener member of FIG. 6 (a) to the molding main body by an insert molding process.
FIG. 8 is a partial plan view of a fastener member according to still another embodiment of the present invention.
[Explanation of symbols]
12 ... Main aspects
14 ... Back side
16 ... Base
18 ... engaging element
20 ... inflatable part
22 ... Node
24… Upper part
26 ... Lower part
28 ... Cavity
30 ... wall
32 ... Notch
38 ... Core member
50, 70 ... connecting elements
52, 78 ... Legs
54, 80 ... Anchor part
59 ... Thin extension
90 ... type

Claims

In a face-to-face engagement type fastener member comprising a band-like base portion having a main surface and a back surface opposite to the main surface, and a plurality of engagement elements provided on the main surface of the base portion,
The base includes a plurality of inflating parts spaced apart in the longitudinal direction and a plurality of nodes that connect the adjacent inflating parts to each other.
Each of the plurality of inflating portions includes an upper portion having the main surface and a lower portion having the back surface, which are separated from each other so that a cavity is formed between the two portions, and the upper portion and the lower portion The parts are converged at least at both ends of the inflating part in the longitudinal direction of the base part and are integrally coupled to each other,
Each of the plurality of nodes is formed at a converging joint portion of the upper and lower portions at the both ends of the inflatable portion;
A fastener member characterized by the above.

The said cavity formed between the said upper stage part and the said lower stage part of the said expansion part is penetrated and opened in the cross direction of the said base part between this upper stage part and this lower stage part. Fastener member.

It further includes a connecting element provided on the back surface of the lower portion of the expansion portion, and the engaging element is exposed to the surface of the molding body through the coupling element embedded in the molding body by an insert molding process. The fastener member according to claim 1 or 2, wherein the fastener member is configured to be fixedly connected to the molding main body in a state.