201206362 六、發明說明： 【發明所屬之技術領域】 本發明係關於一種拉鏈，更詳細而言，係關於一種藉由 連結部而連結有複數個鏈齒之拉鏈。 【先前技術】 作為先前之拉鏈’眾所周知有沿著一對鏈布之對向之鏈 布側緣部’將利用嵌入之支持線束連結複數個鏈齒而成之 鏈齒排縫合者（例如’參照專利文獻丨）。 先前技術文獻 專利文獻 專利文獻1:曰本專利特開昭56-89204號公報 【發明内容】 發明所欲解決之問題 然而’上述專利文獻！記載之拉鏈，於例如利用缝紉 機，將鏈齒排縫合於鏈布時，有時鏈齒之姿勢並不穩定， 導致難以使鏈齒以穩定之姿勢縫合於鏈布。而且，於以不 穩定姿勢縫合鏈齒之情形時，會導致㈣與鍵齒之安裝強 度不足’使得鍵齒相對鏈布移自，或者無法使鏈齒彼此正 確嗜合。 本發明，係#於所述情況研製而成者，其目的在於提供 -種可以穩定之姿勢將由連結部連結之複數個鏈齒縫合於 鏈.布，從而提昇鏈布與鏈齒之安裝強度之拉鏈。 〇 、 解決問題之技術手段 本發明之上述目的，係，藉由下述構成而達成。 153165.doc 201206362 (1)一種拉鏈，其特徵在於，」 其具有沿著一對鏈布之對向$ 分別並列設置之複數個鏈齒；201206362 VI. Description of the Invention: [Technical Field] The present invention relates to a slide fastener, and more particularly to a slide fastener in which a plurality of fastener elements are coupled by a joint portion. [Prior Art] As a conventional zipper, it is known that a chain side edge portion along a pair of chain fabrics is a fastener element which is formed by joining a plurality of fastener elements with an embedded support strand (for example, 'refer to Patent document 丨). CITATION LIST Patent Literature Patent Literature 1: JP-A-56-89204 SUMMARY OF THE INVENTION Problems to be Solved by the Invention However, the above-mentioned patent documents! In the zipper described above, for example, when the fastener element is sewn to the chain fabric by a sewing machine, the posture of the fastener element may be unstable, and it may be difficult to stitch the fastener element to the fastener fabric in a stable posture. Moreover, in the case of suturing the fastener elements in an unstable posture, (4) insufficient mounting strength with the key teeth is caused, so that the key teeth are moved from the chain cloth, or the fastener elements are not properly fitted to each other. The present invention has been developed in the above-mentioned manner, and its object is to provide a stable posture in which a plurality of fastener elements connected by a joint portion are sewn to a chain cloth, thereby improving the mounting strength of the chain cloth and the fastener elements. zipper.技术 Technical Solution to Problem The above object of the present invention is achieved by the following configuration. 153165.doc 201206362 (1) A zipper, characterized in that it has a plurality of sprocket teeth arranged side by side along a pair of chain cloths;
縫線而安裝於鏈布β 其具備：一對鏈布；鏈齒排， 之鏈布側緣部隔開固定間隔而 ，以及滑件，其係沿著鏈齒排 (2) 如⑴記載之拉鍵’其中鍵齒具有與鍵布接觸之第i面、 及其相反側之第2面；約㈣具有齒身冑、自#身部延伸 設置之頸部、及自頸部之前端部延伸設置之嚙合頭部；第 2面側具有自齒身部朝向鏈布之寬度方向外方延伸設置、 且隨著朝向前端則鍵布之長度方向之尺寸遞減之頭部。 (3) 如（1)或（2)記載之拉鏈，其中於鏈齒之表面，形成有收 容縫線之收容槽。 (4) 如（1)〜(3)之任一項之拉鏈，其中複數個鏈齒係由一對連 結部連結而構成鏈齒排，且藉由2根縫線而安裝於鏈布。 (5) 如（4)記載之拉鏈，其中2根縫線係配置於一對連結部 間》 (6) 如（1)記載之拉鏈，其中鏈齒具有與鏈布接觸之第1面、 及其相反側之第2面，且於第1面形成有朝向第2面成凹狀 贊曲之脊曲部。 153165.doc 201206362 發明之效果 根據本發明之拉鏈，由於鏈齒，係由連結部連結而構成 鏈齒排，並且藉由於鏈齒之表面沿著上述鏈布之寬度方向 排列配置之2根以上之缝線，而安裝於鏈布，因此，可以 穩定之姿勢將鏈齒安裝於鏈布，從而可提昇鏈布與鏈齒之 安裝強度。 【實施方式】 以下，基於圖式，詳細說明本發明之拉鏈之各實施形 態。再者，於以後之說明中，關於鏈布，所謂表側係指相 對圖1之紙面而言之近前側（於下述滑件之上側具備拉片之 側），所謂背側係指相對圖丨之紙面而言之裏側（於下述滑件 之下側不具備拉片之側），所謂前側係指相對圖1之紙面而 5之上側（以使下述鏈齒排嚙合之方式使滑件移動之方向 側）’所渭後側係指相對圖1之紙面而言之下側（以使下述鍵 齒排分離之方式使滑件移動之方向側），所謂左側係指相 對圖1之紙面而言之左側，所謂右側係指相對圖丨之紙面而 言之右側’關於滑件’所謂上側係指相對圖1之紙面而言 之近前側’所謂下側係指相對圖1之紙面而言之裏側，所 δ胃前側係指相對圖1之紙面而言之上側，所謂後側係指相 對圖1之紙面而言之下側，所謂左側係指相對圖i之紙面而 言之左側’所謂右側係指相對圖1之紙面而言之右側。此 處’所謂表背方向’係指垂直於鏈布面之方向，所謂左右 方向’係指與鏈布面保持水平且與前後方向正交之方向。 又，鏈布以及滑件之左右方向亦稱為寬度方向。又，鏈布 I53165.doc 201206362 之前後方向亦稱為長度方向。 (第1實施形態） 首先，參照圖1〜圖9，說明本發明之拉鏈之第1實施形 態。 如圖1所示，本實施形態之拉鏈10，係包含針織或編織 而成之左右一對鍵布20、分別設置於左右一對鍵布20之對 向之鏈布側緣部20a之鏈齒排30、使左右鏈齒排30嚙合.分 離之滑件40、覆蓋著左右各個鏈齒排3〇之前側端部之鏈齒 31射出成形之上止擋部11、以及覆蓋著兩鏈齒排3〇、3〇之 後側端部之鏈齒31之兩者射出成形之下止擋部12。而且， 藉由使滑件40沿前後方向移動，而使左右鏈齒排3〇嚙合· 分離。再者’下止擋部12 ’亦可為包含插銷、筒銷、及箱 體之開合嵌插件。再者’於圖1及圖2中，為表示各部分而 將下述縫線3 8省略。 左右一對鏈齒排3 0 ’係包含複數個鏈齒3丨，其等係沿著 鏈布2 0之鏈布側緣部2 〇 a之長度方向排列成1行且相互獨 立；以及一對剖面圓形之連結部22，其等將相鄰之鏈齒3 i 間連結，且相互平行地沿著鏈布2〇之寬度方向排列配置。 又，複數個鏈齒3 1以及連結部22，係使用例如聚醢胺、聚 縮醛、聚丙烯、聚對苯二甲酸丁二醇酯等合成樹脂，藉由 射出成形而一體成形。再者，鏈齒31不僅限於上述合成樹 脂製，亦可為金屬製。 藉由利用以此方式平行配置之一對連結部22，將複數個 鏈齒31—體連結，而穩定地維持各鏈齒31之姿勢（位置關 153165.doc 201206362 係）。藉此’便可以穩定之姿勢將鏈齒3丨縫合於鏈布2〇， 從而提昇鍵布20與鏈齒31之安裝強度。又，可容易且確實 地進行縫合作業。再者，連結部22，亦可為與鏈齒3丨不同 之構件、例如線等線束狀構件，於該情形時，使鏈齒3 i等 間隔地於沿著鏈布20之長度方向連續之2根線束狀構件上 射出成形’並使線束狀構件嵌入成形於鏈齒31。 如圖2〜圖5所示’鏈齒31，係包含與鏈布2〇接觸之作為 第1面之背面部32A、及與背面部32A為相反側且配置於表 側之作為第2面之表面部3 2 B。 如圖4所示，背面部32A側，係包含齒身部33，其安裝於 鍵布20 ;頸部34，其自齒身部33朝向鏈布2〇之寬度方向 (鏈布寬度方向）外方（圖中為右方向，且朝向安裝於鏈布2〇 之狀態下對向之鏈齒排3〇之方向）延伸設置，且沿著鍵布 20之長度方向（鏈布長度方向）收縮；以及嚙合頭部35，其 自頸部34之前端部進而朝向鏈布2〇之寬度方向外方延伸設 置，且相較頸部34沿鍵布20之長度方向隆起。又，頸部34 之鏈布長度方向之尺寸係小於齒身部33及嚙合頭部35。 又，嚙合頭部35之鏈布長度方向之尺寸係大於齒身部33 ^ 齒身部33，係為平面觀察下鏈布2〇之寬度方向較長之近 似長方形狀之立方體，且自該鏈布2〇之長度方向之兩側面 刀別形成有一對連結部22。一對連結部22 ,係將相鄰之鏈 齒31之齒身部33彼此連結，且包括將各個齒身部33之嚙合 頭°卩35側連結之一連結部、以及與該一連結部隔開間隔且 將齒身部3 3之與嚙合頭部3 5相反一側連結之另一連結部。 153165.doc 201206362 又於齒身。p 33之與喷合頭部35為相反側之端面，形成有 鍵布20之長度方向中央部朝向與喷合頭部Μ相反一側凸出 之凸曲面33a〇又’於齒身部33之背面(與鏈布2〇接觸之面) 之一對連結部22間，形成有沿表面部32B方向凹狀彎曲之 f曲部33b(參照圖5)。而且，喷合頭部35，係於左右鍵齒 排㈣合時，與相鄰之料31之頸部⑽行嚙合。如圖$ 斤示齒身°卩33之凸曲面33a側係形成為，其鏈布2〇之寬 度方向之尺寸自背面部32A側朝向表面部32B遞增，且於 越過連結部22之位置遞減。連結相鄰㈣31之連結部_ 於鍵齒31之表背方向之厚度，且自鏈齒以齒身部33之側 方，沿著鏈布20之長度方向（與鏈布2〇之寬度方向正交之 方向）延伸。連結部22之剖面形狀不限於圓形，亦可為四 邊形或楕圓形。 如圖2及圖3所示，表面部32B側具備平面觀察下近似三 角形之表側頭部36，該表側頭部36係自齒身部刊朝向鏈布 2〇之寬度方向外方延伸設置，且隨著朝向前端則其鍵布2〇 之長度方向之尺寸遞減。表側頭部36係形成於背面部ΜΑ 側之頸部34以及嚙合頭部35之表側.亦即，頸部“以.及嚙 合頭部35係自齒身部33之背面部32A側延伸設置，且表側 頭部36係自齒身部33之表面部32B側延伸設置。 又，於一對連結部22間且齒身部33之表面以及側面，將 用以分別收容下述之2根縫線38之2個凹狀之收容样37，於 齒身部33之兩側面及表面連續地形成，並且與連結部22平 行地形成。藉此’使2根縫線38配置於一對連結部22間。 153165.doc 201206362 如圖1、圖5、及圖6所示，滑件40具備於上下方向隔開 且平行配置之上翼板41及下翼板42、於前端部連結上翼板 41及下翼板42之導引柱43、分別沿著上翼板41及下翼板42 之左右兩側緣形成之側導板44、形成於上翼板41之上表面 之拉片安裝柱45、以及擺動自如地安裝於拉片安裝柱45之 拉片46。藉此，於滑件40之前部形成有由導引柱43予以分 離之左右導入口 47’且於滑件40之後部形成有嚙合口 48。 而且’於上翼板41與下翼板42之間，形成有使左右導入口 47與嚙合口 48連通之近似Y字狀之鏈齒導引通道49，且該 鏈齒導引通道49構成供左右一對鏈齒排30插穿之通道。再 者’側導板44’亦可僅包含於上翼板41及下翼板42之一 側，又，拉片安裝柱45以及拉片46，亦可包含於下翼板42 中。 又，本實施形態，係若移動操作滑件4〇，則鏈齒31之凸 曲面33a滑接於側導板44，因此，側導板44與凸曲面33a之 接觸面積變得小於平坦面之情形。藉此，可減少使滑件4〇 移動時之滑動阻力’故可以較小之力操作滑件4〇。 而且，如圖5所不，鏈齒排3〇，係藉由利用沿著鏈布2〇 之寬度方向排列配置之2根縫線38，沿著鏈布2〇之一面側 (例如，表面側）之鏈布側緣部2〇a，縫合各鏈齒31，而安裝 於鏈布20。2根縫線38,係沿著鏈布2〇之長度方向橫跨相 鄰之鏈齒3丨之齒身部33之表面之後，於該鏈齒31之間，藉 由將縫線38縫合於鏈布20,而將鏈齒只縫合於鏈布2〇。2 根縫線38 ’係包含配置於齒身部33之嗤合頭部训之一縫 153l65.d〇c -9· 201206362 線38、及與該—縫線38隔開間隔地配置於齒身部33之嚙合 頭部35側之另—縫線38。又，縫線38亦可為3根。 此時’由於2根縫線3 8，分別收容於鍵齒3 1之2個收容槽 37中’因此’ 2根縫線38不會自鏈齒31脫落。又，由於鍵 布20係以密接於齒身部33之背面之彎曲部33b之方式進行 縫合’因此，鏈布20與鏈齒31之安裝強度提昇。 以此方式構成之拉鏈1〇,係如圖6及圖7所示，於一鏈齒 31之嚙合頭部35之上表面、與相鄰之另一鏈齒31之表側頭 部36之下表面抵接之狀態下，左右之鏈齒31之嚙合頭部乃 彼此嚙合《•又，如圖7所示，頸部34及嚙合頭部35係形成 為自表背方向中央朝向背側變得尖細之剖面近似梯形形 狀’並且’表側頭部36係形成為自表背方向中央朝向表側 變得尖細之剖面近似梯形形狀。藉此，嚙合狀態下之左右 鏈齒31，以相對具有間隙之狀態進行嚙合。因此，如圖8 所示即便使拉鍵1 〇沿表面方向彎曲，鍵齒31彼此亦難以 接觸，因此’可易於使之維持著良好之嚙合狀態進行彎 曲。又，即便使拉鏈1〇沿著與圖8相反之背面方向進行彎 曲，亦由於形成為自表背方向中央朝向背側變得尖細之形 狀’而容易使之彎曲。 如以上所說明，根據本實施形態之拉鏈10，由於鏈齒 3 1，係由一對連結部22連結而構成鍵齒排3〇 ,並且藉由於 鍵齒31之表面沿著鏈布2〇之寬度方向排列配置之2根縫線 38，而安裝於鏈布20，因此，可將鏈齒31以穩定之姿勢安 裝於鏈布20，從而可提昇鏈布2〇與鏈齒31之安裝強度。 153165.doc -10- 201206362 又’根據本實施形態之拉鏈i〇，由於在齒身部33形成有 分別收容2根縫線38之2個收容槽37，因此，2根縫線38不 會自鏈齒31中脫落。藉此，可將鏈齒31確實地安裝於鏈布 20。 又’根據本實施形態之拉鏈1 〇，由於2根縫線3 8係配置 於對連結部22間’因此，可藉由一對連結部22而避免縫 線3 8與外部之構件接觸。藉此，便可防止因接觸導致縫線 38磨損，故可提昇拉鏈1〇之耐久性。 又’根據本實施形態之拉鍵1〇，由於在鍵齒31之背面部 32A ’形成有朝向表面部32B凹狀彎曲之彎曲部33b，因 此’當將鏈齒3 1縫合於鏈布20時，鏈布20密接於彎曲部 33b ’故可提昇鏈布2〇與鍵齒31之安裝強度。 再者’作為本實施形態之變形例，亦可將上述鏈齒排3 〇 應用於圖9所示之隱形拉鏈50。該隱形拉鏈50，係包含左 右一對鏈布51、沿著藉由將左右一對鏈布5 1之對向之鏈布 側緣部51a近似u字狀彎折而形成之彎折緣部511?分別縫合 之上述鏈齒排30、以及使左右鏈齒排3〇嚙合.分離之滑件 60 ’且該隱形拉鏈5〇 ’係藉由於鏈齒排3〇嚙合之狀態下， 使左右之彎折緣部5 1 b接近、較佳為接觸，而難以自表面 側看見鏈齒排30。 滑件60 ’係包含下翼板61 ;剖面逆L字狀之左右一對侧 導板62 ’其等包括沿著下翼板61之左右兩側緣分別豎立設 置之側壁部62a、與自左右之側壁部62a之上端沿著相互接 近之方向延伸設置之左右一對上板部62b ;未圖示之導引 153165.doc 201206362 柱’其自下翼板61之前端部朝向左右一對上板部62b間豎 立設置；以及未圖示之拉片，其擺動自如地安裝於導引 柱。 (第2實施形態） 其次，參照圖10及圖11，說明本發明之拉鏈之第2實施 形態。再者，對於與第1實施形態同一或同等之部分，於 圖式中標註同一符號，並省略或簡化其之說明。 本貫施形態，係如圖1 〇及圖11所示，於鏈齒3丨之齒身部 33之表面’形成有收容縫線38之寬幅之一個收容槽71。 又’#身部33之凸曲面33a側之連結部22，係配置於收容 槽71之寬度方向大致中央部。又，鏈齒3丨，係藉由穿過一 對連結部22間之2根縫線38、以及相較凸曲面33a側之連結 部22穿過寬度方向外側之丨根縫線38之總計3根缝線38，而 縫合於鏈布20。 進而，於鏈布20之表面，利用黏接劑黏貼包含熱塑性合 成樹脂（熱塑性彈性體）之膜狀物，或者較薄地塗佈熔融之 樹脂，而形成防水層72。而且，由於在鏈布2〇上形成有防 水層72，因此，可藉由使鏈齒3丨為背面側進行使用，而製 成防止雨水等浸入’從而具有防水性能之拉鏈。 關於其他構成及作用效果’與上述第1實施形態相同。 (第3實施形態） 其-人，參照圖12及圖13，說明本發明之拉鍵之第3實施 形態。再者，對於與第1實施形態同一或同等之部分，於 圖式中標註同一符號’並省略或簡化其之說明。 153165.doc •12· 201206362 本貫施形態’係如圖12及圖13所示，鍵齒31由一個平板 狀連結部81連結。該連結部81，係以與上述連結部22相同 之方式’與鏈齒31 —體成形。又’ 2根縫線38，係貫通連 結部81 ’將鍵齒31縫合於鍵布20。又，連結部81之寬度， 較佳為於鏈齒31之頸部34之附近與凸曲面33a之附近之 間，可供至少1根縫線38貫通（縫合）連結部81之寬度。 如以上所說明’根據本實施形態之拉鏈丨〇，由於鍵齒3 ^ 由一個平板狀連結部81所連結，因此，可使鏈齒31之姿勢 變得更穩定。由於2根縫線38貫通平板狀連結部81，因 此’可更加提昇鏈布20與鏈齒31之安裝強度。 關於其他構成及作用效果，與上述第1實施形態相同。 (第4實施形態） 其次，參照圖14，說明本發明之拉鍵之第4實施形態。 再者，對於與第1實施形態同一或同等之部分，於圖式中 標註同一符號，並省略或簡化其之說明。 本貫施形態’係取代上述鏈齒3 1 ’而使用圖14所示之鏈 齒91。該鏈齒91，係表背同一形狀，且與上述鏈齒31相 同’包含形成有2個收容槽93之齒身部92、自齒身部92朝 向鏈布20之寬度方向外方（圖中為右方向）延伸設置且於鍵 布20之長度方向收縮之頸部94、自頸部94之前端部進而朝 向鏈布20之寬度方向外方延伸設置且相較頸部94於鏈布2〇 之長度方向隆起之嚙合頭部95、自頸部94之側面延伸之一 對導入部96、以及形成於嚙合頭部95之前端部且供對方側 之鏈齒91之導入部96進行嵌合之導入部收納槽97 ^再者， 153165.doc •13· 201206362 齒91，係與上述鏈齒31相同，由2根縫線38縫合於鏈布 20 ° 關於其他構成及作用效果，與上述第！實施形態相同。 再者，本發明並非限定於上述實施形態所例示者，可在 不脫離本發明之精神之範圍内進行適當變更。 J如於上述實施形態中，可將鍵齒31之背面部32A形 成為平坦面’且不形成彎曲部33b。 【圖式簡單說明】 圖1係說明本發明之拉鏈之第丨實施形態之表面圖； 圖2係未嚙合狀態下之鍵齒排之放大立體圖； 圖3係圖2所示之鏈齒排之表面圖； 圖4係圖2所示之鍵齒排之背面圖； 圖5係圖1所示之A-A線剖面圖； 圖6係表示於滑件内嚙合或分離之鏈齒之狀態之主要部 分放大表面圖； 圖7係圖1所示之B-B線剖面圖； 圖8係對使圖7所示之拉键沿表背方向彎曲之狀態進行說 明之剖面圖； 圖9係對第1實施形態之拉鏈之變形例進行說明之放大剖 面圖； 圖10係對本發明之拉鏈之第2實施形態進行說明之剖面 rgt · 圆， 圖11係圖10所示之鏈齒排之表面圖； 圖12係對本發明之拉鏈之第3實施形態進行說明之剖面 153165.doc -14- 201206362 圖； 圖13係圖12所示之鏈齒排之表面圖；及 圖14係對本發明之拉鏈之第4實施形態進行說明之鏈齒 排表面圖。 【主要元件符號說明】 10 拉鏈 11 上止擋部 12 下止擋部 20 鏈布 20a 鏈布側緣部 22 連結部 30 鍵齒排 31 鏈齒 32A 背面部（第1面） 32B 表面部（第2面） 33 齒身部 33a 凸曲面 33b 彎曲部 34 頸部 35 嚙合頭部 36 表側頭部（頭部） 37 收容槽 38 縫線 40 滑件 153165.doc -15- 201206362 41 上翼板 42 下翼板 43 導引柱 44、62 側導板 45 拉片安裝柱 46 拉片 47 導入口 48 嗤合口 49 鏈齒導引通道 50 隱形拉鏈 51 鍵布 51a 鏈布側緣部 51b 彎折緣部 60 滑件 61 下翼板 62a 側壁部 62b 上板部 71 收容槽 72 防水層 81 連結部 91 鏈齒 92 齒身部 93 收容槽 94 頸部 153165.doc -16- 201206362 95 96 97 嚙合頭部 導入部 導入部收納槽 153165.doc -17-The suture is attached to the chain cloth β, and includes a pair of chain cloths; a chain element row, the side edge portions of the chain cloth are spaced apart from each other by a fixed interval, and a slider along the element row (2) as described in (1) The pull key 'where the key has the i-th surface in contact with the key cloth and the second side opposite to the key cloth; about (4) has a tooth body, a neck extending from the body portion, and extending from the front end of the neck The engaging head portion is provided; the second surface side has a head portion which is extended outward from the tooth body portion in the width direction of the chain cloth, and has a decreasing size in the longitudinal direction of the key cloth as it goes toward the front end. (3) The zipper according to (1) or (2), wherein a receiving groove for receiving the stitch is formed on a surface of the fastener element. (4) The zipper according to any one of (1) to (3), wherein the plurality of sprocket systems are connected by a pair of splicing portions to form a sprocket row, and are attached to the chain fabric by two sutures. (5) The zipper according to (4), wherein the two stitches are disposed between the pair of connecting portions. (6) The zipper according to (1), wherein the sprocket has a first surface in contact with the chain cloth, and On the second surface on the opposite side, a curved portion that is concavely curved toward the second surface is formed on the first surface. According to the zipper of the present invention, the fastener element is connected by the connecting portion to form the element row, and the surface of the element is arranged in two or more along the width direction of the chain cloth. The stitching is attached to the chain cloth, so that the fastener element can be attached to the chain cloth in a stable posture, thereby improving the mounting strength of the chain cloth and the fastener element. [Embodiment] Hereinafter, each embodiment of the slide fastener of the present invention will be described in detail based on the drawings. In the following description, regarding the chain cloth, the front side means the front side with respect to the paper surface of Fig. 1 (the side having the pull tab on the upper side of the slider described below), and the so-called back side refers to the relative drawing. The back side of the paper surface (the side of the lower side of the slider is not provided with the pull tab), the front side refers to the upper side of the paper surface of Fig. 1 (the latter is engaged in such a manner that the following element rows are engaged) The direction of the side of the movement refers to the lower side of the paper surface of Fig. 1 (the side on which the slider moves in such a manner that the following key rows are separated), the so-called left side refers to the side of Fig. 1 On the left side of the paper surface, the right side refers to the right side of the paper surface relative to the drawing, and the upper side refers to the near side of the paper surface of FIG. 1 . The so-called lower side refers to the paper surface of FIG. 1 . On the inside, the front side of the δ stomach refers to the upper side with respect to the paper surface of Fig. 1, the so-called rear side refers to the lower side with respect to the paper surface of Fig. 1, and the left side refers to the left side with respect to the paper surface of Fig. 1 The right side refers to the right side of the paper of Figure 1. Here, the term "back-to-back direction" means a direction perpendicular to the surface of the chain, and the left-right direction means a direction which is horizontal with respect to the surface of the chain and orthogonal to the front-rear direction. Further, the left and right directions of the chain cloth and the slider are also referred to as the width direction. Also, the chain cloth I53165.doc 201206362 is also referred to as the length direction. (First Embodiment) First, a first embodiment of a slide fastener according to the present invention will be described with reference to Figs. 1 to 9 . As shown in Fig. 1, the slide fastener 10 of the present embodiment includes a pair of left and right key fabrics 20 which are knitted or woven, and fastener elements which are respectively provided on the opposite side fabric edge portions 20a of the pair of left and right key fabrics 20 The row 30 is configured to engage the left and right sprocket rows 30. The separated slider 40, the sprocket 31 covering the front end portions of the left and right sprocket rows 3 射 are formed to form the upper stopper portion 11 and cover the two sprocket rows Both the sprocket 31 of the rear end portion of the 3 〇 and 3 射 are injected to form the lower stopper portion 12. Further, the left and right element rows 3 are engaged and disengaged by moving the slider 40 in the front-rear direction. Further, the lower stop portion 12' may be an opening and closing insert including a plug, a pin, and a case. Further, in Fig. 1 and Fig. 2, the following stitches 38 are omitted for showing the respective portions. The pair of right and left sprocket rows 3 0 ' includes a plurality of sprocket teeth 3 丨 which are arranged in a row along the longitudinal direction of the chain side edge portion 2 〇 a of the chain cloth 20 and are independent of each other; The connecting portion 22 having a circular cross section is connected between the adjacent sprocket teeth 3 i and arranged in parallel with each other along the width direction of the chain cloth 2 . Further, the plurality of fastener elements 31 and the connecting portion 22 are integrally molded by injection molding using a synthetic resin such as polyamine, polyacetal, polypropylene or polybutylene terephthalate. Further, the fastener element 31 is not limited to the above synthetic resin, and may be made of metal. By arranging one pair of the coupling portions 22 in parallel in this manner, a plurality of fastener elements 31 are connected to each other, and the posture of each of the fastener elements 31 is stably maintained (position OFF 153165.doc 201206362 system). Thereby, the fastener element 3 can be sewn to the chain fabric 2〇 in a stable posture, thereby improving the mounting strength of the key cloth 20 and the fastener element 31. Moreover, the sewing operation can be performed easily and surely. Further, the connecting portion 22 may be a member different from the fastener element 3, for example, a wire harness member such as a wire. In this case, the fastener elements 3 i are equally spaced along the longitudinal direction of the chain fabric 20 The two strand-shaped members are injection-molded and the strand-shaped members are insert-molded into the fastener elements 31. As shown in FIG. 2 to FIG. 5, the sprocket 31 includes a back surface portion 32A which is a first surface which is in contact with the chain cloth 2, and a surface which is a second surface which is disposed on the side opposite to the back surface portion 32A. Department 3 2 B. As shown in Fig. 4, the side of the back surface portion 32A includes a tooth body portion 33 which is attached to the key cloth 20 and a neck portion 34 which faces the width direction (chain width direction) of the chain cloth 2 from the tooth body portion 33. a square (in the right direction in the drawing, and oriented in the direction of the pair of chain teeth 3 in a state of being attached to the chain fabric 2), and contracted along the longitudinal direction of the key cloth 20 (the longitudinal direction of the chain fabric); And an engaging head portion 35 which extends outward from the front end portion of the neck portion 34 and further toward the width direction of the chain cloth 2, and which is raised in the longitudinal direction of the key cloth 20 than the neck portion 34. Further, the dimension of the neck portion 34 in the longitudinal direction of the chain is smaller than the tooth body portion 33 and the engaging head portion 35. Further, the dimension of the meshing head portion 35 in the longitudinal direction of the chain is larger than the tooth body portion 33^the body portion 33, and is a substantially rectangular cube having a long width in the width direction of the lower chain fabric 2, and from the chain A pair of coupling portions 22 are formed on both side cutters in the longitudinal direction of the cloth. The pair of connecting portions 22 connect the tooth portions 33 of the adjacent sprocket 31 to each other, and include a connecting portion that connects the engaging heads 卩35 side of each of the tooth portions 33, and is separated from the connecting portion. The other connecting portion that connects the tooth body portion 3 3 opposite to the meshing head portion 35 is opened at intervals. 153165.doc 201206362 Again in the tooth body. The end surface of the p 33 opposite to the spray head portion 35 is formed with a convex curved surface 33a which is convex toward the opposite side of the spray head portion from the center portion in the longitudinal direction of the key cloth 20, and is formed in the tooth portion 33. The back surface (the surface in contact with the chain fabric 2) is formed with a curved portion 33b (see FIG. 5) that is concavely curved in the direction of the surface portion 32B between the pair of connecting portions 22. Further, the spray head portion 35 is engaged with the neck portion (10) of the adjacent material 31 when the left and right key rows (4) are joined. The side of the convex curved surface 33a of Fig. 1 is formed such that the dimension of the width direction of the chain fabric 2 is increased from the side of the back surface portion 32A toward the surface portion 32B, and is decreased at a position beyond the joint portion 22. The connecting portion of the adjacent (four) 31 is connected to the thickness of the key tooth 31 in the front and back directions, and the side of the tooth portion 33 is along the longitudinal direction of the chain cloth 20 (the width direction of the chain cloth 2 is positive) The direction of the intersection) extends. The cross-sectional shape of the connecting portion 22 is not limited to a circular shape, and may be a quadrangular shape or a circular shape. As shown in FIG. 2 and FIG. 3, the front surface portion 32B side has a front side head portion 36 which is approximately triangular in plan view, and the front side head portion 36 extends outward from the tooth body portion in the width direction of the chain cloth 2〇, and As it goes toward the front end, the size of the key fabric 2's length direction decreases. The front side head portion 36 is formed on the neck portion 34 on the side of the back portion and the front side of the engaging head portion 35. That is, the neck portion and the engaging head portion 35 are extended from the side of the back portion 32A of the tooth portion 33, The front side head portion 36 extends from the surface portion 32B side of the tooth body portion 33. The surface and the side surface of the tooth body portion 33 between the pair of connecting portions 22 are used to respectively accommodate the following two stitches. The two concave storage samples 37 are formed continuously on both side surfaces and surfaces of the tooth body portion 33, and are formed in parallel with the coupling portion 22. Thus, the two sutures 38 are disposed on the pair of coupling portions 22 153165.doc 201206362 As shown in FIG. 1, FIG. 5, and FIG. 6, the slider 40 is provided with the upper wing 41 and the lower blade 42 in parallel in the up-and-down direction, and the upper wing 41 is connected to the front end. And a guide post 43 of the lower wing plate 42, a side guide plate 44 formed along the left and right side edges of the upper wing plate 41 and the lower wing plate 42, and a tab mounting post 45 formed on the upper surface of the upper wing plate 41. And a pull tab 46 that is swingably mounted on the handle mounting post 45. Thereby, a left side separated by the guide post 43 is formed in the front portion of the slider 40. The inlet 47' is formed with a meshing opening 48 at the rear of the slider 40. Further, between the upper blade 41 and the lower blade 42, an approximately Y-shaped connection is formed between the left and right inlets 47 and the meshing port 48. The sprocket guiding passage 49, and the sprocket guiding passage 49 constitutes a passage for the pair of left and right sprocket rows 30 to be inserted. Further, the 'side guide 44' may be included only in the upper wing 41 and the lower wing On one side of the 42 side, the pull tab mounting post 45 and the pull tab 46 may be included in the lower wing panel 42. Further, in the present embodiment, when the operation slider 4 is moved, the convex curved surface 33a of the fastener element 31 Sliding to the side guide 44, the contact area between the side guide 44 and the convex curved surface 33a becomes smaller than that of the flat surface. Thereby, the sliding resistance when the slider 4 is moved can be reduced, so that it can be made smaller. The force is operated by the slider 4〇. Moreover, as shown in Fig. 5, the element rows 3 are arranged along the chain cloth 2 by using two stitches 38 arranged along the width direction of the chain cloth 2〇. The side edge portion 2〇a of one side (for example, the surface side) is sewn to each of the fastener elements 31, and is attached to the chain cloth 20. Two stitches 38 are along the length of the chain cloth 2 After the directional direction spans the surface of the tooth portion 33 of the adjacent sprocket 3丨, between the sprocket 31, the stitching is stitched to the chain cloth 20 by sewing the stitch 38 to the chain cloth 20根. 2 The root suture 38' includes a nipple 153l65.d〇c -9· 201206362 line 38 disposed on the tooth body portion 33, and is disposed at a distance from the suture 38. The other portion of the tooth portion 33 is engaged with the suture 38 on the side of the head portion 35. Further, the number of the sutures 38 may be three. At this time, "two sutures 3, 8 are accommodated in the two teeth of the key teeth 3 1 respectively. In the groove 37, the two stitches 38 are 'not' detached from the fastener elements 31. Further, since the key sheet 20 is sewn in such a manner as to be in close contact with the curved portion 33b on the back surface of the tooth body portion 33, the attachment strength of the chain cloth 20 and the fastener element 31 is improved. The zipper 1 构成 constructed in this manner is as shown in FIGS. 6 and 7 on the upper surface of the engaging head portion 35 of one sprocket 31 and the lower surface of the front side head 36 of the adjacent sprocket 31. In the abutting state, the engaging heads of the left and right sprocket 31 are engaged with each other. "And, as shown in Fig. 7, the neck portion 34 and the engaging head portion 35 are formed to be pointed from the center of the front and back toward the back side. The thin section is approximately trapezoidal in shape and the front side head 36 is formed in a substantially trapezoidal shape in a cross section which is tapered from the center in the front-back direction toward the front side. Thereby, the left and right sprocket teeth 31 in the engaged state are engaged in a state of having a gap therebetween. Therefore, even if the pull key 1 弯曲 is bent in the surface direction as shown in Fig. 8, the key teeth 31 are hard to contact each other, so that it is easy to maintain a good meshing state for bending. Further, even if the zipper 1〇 is bent in the direction opposite to the back surface of Fig. 8, it is easily formed by bending in a shape which is tapered from the center in the front-back direction toward the back side. As described above, according to the slide fastener 10 of the present embodiment, the fastener element 31 is coupled by the pair of coupling portions 22 to constitute the key row 3〇, and by the surface of the key 31 along the chain cloth 2 Since the two stitches 38 arranged in the width direction are attached to the chain cloth 20, the fastener elements 31 can be attached to the chain cloth 20 in a stable posture, and the attachment strength of the chain cloth 2 and the fastener elements 31 can be improved. 153165.doc -10- 201206362 Further, according to the zipper i of the present embodiment, since the two housing grooves 37 for accommodating the two sutures 38 are formed in the tooth body portion 33, the two sutures 38 are not self-contained. The sprocket 31 is detached. Thereby, the fastener elements 31 can be surely attached to the chain fabric 20. Further, according to the zipper 1 of the present embodiment, since the two stitches 38 are disposed between the pair of connecting portions 22, the pair of connecting portions 22 can prevent the stitches 38 from coming into contact with the members outside. Thereby, the wear of the suture 38 can be prevented from being caused by the contact, so that the durability of the zipper 1 can be improved. Further, according to the pull key 1 of the present embodiment, since the curved portion 33b which is concavely curved toward the surface portion 32B is formed in the back surface portion 32A' of the key teeth 31, "when the fastener element 31 is sewn to the fastener fabric 20" The chain cloth 20 is in close contact with the curved portion 33b', so that the mounting strength of the chain cloth 2〇 and the key teeth 31 can be improved. Further, as a modification of the embodiment, the element row 3 can be applied to the concealed slide 50 shown in Fig. 9 . The concealed zipper 50 includes a pair of right and left chain cloths 51, and a bent edge portion 511 which is formed by bending a chain side edge portion 51a opposite to the pair of right and left chain cloths 51 by approximately u-shaped. Sewing the above-mentioned sprocket row 30 and respectively engaging the left and right sprocket rows 3 〇. The separated sliding member 60 ′ and the invisible zipper 5 ′′ are caused by the meshing of the sprocket row 3 , The flange portion 5 1 b is close to, preferably in contact with, and it is difficult to see the element row 30 from the surface side. The slider 60' includes a lower blade 61; a pair of left and right side guide plates 62' having an inverted L-shaped cross section, and the like, and a side wall portion 62a which is erected along the left and right side edges of the lower blade 61, respectively The pair of upper and lower upper plate portions 62b extending from the upper end of the side wall portion 62a in the direction in which they approach each other; the guide 153165.doc 201206362, which is not shown, is oriented from the front end of the lower wing 61 toward the left and right upper plates. The portions 62b are erected; and a pull tab (not shown) is slidably attached to the guide post. (Second Embodiment) Next, a second embodiment of the slide fastener of the present invention will be described with reference to Figs. 10 and 11 . The same or equivalent portions as in the first embodiment are denoted by the same reference numerals in the drawings, and the description thereof will be omitted or simplified. In the present embodiment, as shown in Fig. 1 and Fig. 11, a wide receiving groove 71 for accommodating the suture 38 is formed on the surface of the tooth portion 33 of the fastener element 3. Further, the connecting portion 22 on the convex curved surface 33a side of the body portion 33 is disposed substantially at the center portion in the width direction of the housing groove 71. Further, the sprocket 3 is a total of 3 through which the two sutures 38 passing between the pair of coupling portions 22 and the coupling portion 22 on the side of the convex curved surface 33a pass through the root of the suture 38 in the width direction. The root line 38 is sewn to the chain cloth 20. Further, on the surface of the chain fabric 20, a film containing a thermoplastic synthetic resin (thermoplastic elastomer) is adhered by an adhesive, or a molten resin is applied thinly to form a water-repellent layer 72. Further, since the water-repellent layer 72 is formed on the chain fabric 2, the fastener element 3 can be used as a back side, thereby preventing the immersion of rainwater or the like to provide a waterproof fastener. The other configurations and operational effects are the same as those of the first embodiment described above. (Third Embodiment) A third embodiment of the pull key of the present invention will be described with reference to Figs. 12 and 13 . In the same or equivalent parts as in the first embodiment, the same reference numerals are used in the drawings, and the description thereof is omitted or simplified. 153165.doc • 12· 201206362 The present embodiment is as shown in Figs. 12 and 13 , and the key teeth 31 are connected by one flat connecting portion 81. The connecting portion 81 is formed integrally with the sprocket 31 in the same manner as the connecting portion 22 described above. Further, the two stitches 38 are the through-joining portions 81' to suspend the key teeth 31 to the key cloth 20. Further, it is preferable that the width of the connecting portion 81 is such that at least one suture 38 can penetrate (sewn) the width of the connecting portion 81 between the vicinity of the neck portion 34 of the element 31 and the vicinity of the convex curved surface 33a. As described above, the zipper cymbal according to the present embodiment is such that the key teeth 3^ are connected by one flat connecting portion 81, so that the posture of the sprocket 31 can be made more stable. Since the two stitches 38 penetrate the flat connecting portion 81, the mounting strength of the chain cloth 20 and the fastener elements 31 can be further improved. Other configurations and operational effects are the same as those of the first embodiment described above. (Fourth Embodiment) Next, a fourth embodiment of the pull key of the present invention will be described with reference to Fig. 14 . In the drawings, the same or equivalent portions as those in the first embodiment are denoted by the same reference numerals, and the description thereof will be omitted or simplified. In the present embodiment, the fastener element 91 shown in Fig. 14 is used instead of the above-mentioned fastener element 3 1 '. The sprocket 91 has the same shape as the front and back, and is the same as the sprocket 31. The tooth portion 92 including the two accommodating grooves 93 and the tooth body portion 92 are outward in the width direction of the chain cloth 20 (in the figure). The neck portion 94 extending in the right direction and contracting in the longitudinal direction of the key cloth 20 extends outward from the front end portion of the neck portion 94 toward the width direction of the chain cloth 20 and is opposite to the neck portion 94 in the chain cloth 2 The engagement head portion 95 extending in the longitudinal direction and the side surface extending from the side surface of the neck portion 94 are fitted to the introduction portion 96 and the introduction portion 96 formed at the end portion of the engagement head portion 95 and provided with the fastener element 91 on the other side. The introduction portion housing groove 97 ^ Further, 153165.doc •13· 201206362 The tooth 91 is the same as the fastener element 31 described above, and is sewn to the chain fabric by two sutures 38. The other configurations and effects are the same as those described above. The embodiment is the same. The present invention is not limited to the embodiments described above, and may be appropriately modified without departing from the spirit of the invention. As in the above embodiment, the back surface portion 32A of the key teeth 31 can be formed into a flat surface ′ without forming the curved portion 33b. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective view showing a third embodiment of a zipper of the present invention; Fig. 2 is an enlarged perspective view of a key row in an unmated state; Fig. 3 is a sprocket row shown in Fig. 2. Figure 4 is a rear view of the key row shown in Figure 2; Figure 5 is a cross-sectional view taken along line AA shown in Figure 1; Figure 6 is a main part showing the state of the fastener element engaged or disengaged in the slider Fig. 7 is a cross-sectional view taken along line BB of Fig. 1; Fig. 8 is a cross-sectional view for explaining a state in which the pull key shown in Fig. 7 is bent in the front and back directions; Fig. 9 is a first embodiment FIG. 10 is a cross-sectional view showing a second embodiment of the slide fastener according to the present invention, and FIG. 11 is a front view of the fastener element row shown in FIG. 10; FIG. 13 is a front view of the element row shown in FIG. 12; and FIG. 14 is a fourth embodiment of the zipper of the present invention; FIG. 13 is a cross-sectional view showing a third embodiment of the zipper according to the present invention; FIG. A description of the surface of the chain tooth row. [Description of main component symbols] 10 zipper 11 upper stopper 12 lower stopper 20 chain fabric 20a chain side edge portion 22 coupling portion 30 key row 31 sprocket 32A back portion (first surface) 32B surface portion (first 2 face) 33 tooth portion 33a convex curved surface 33b curved portion 34 neck 35 meshing head 36 front side head (head) 37 receiving groove 38 suture 40 sliding member 153165.doc -15- 201206362 41 upper wing 42 Wing 43 Guide post 44, 62 Side guide 45 Pull tab mounting post 46 Pull tab 47 Guide inlet 48 Kneading port 49 Chain guide channel 50 Concealed zipper 51 Key cloth 51a Chain side edge portion 51b Bending edge portion 60 Slider 61 Lower wing 62a Side wall portion 62b Upper plate portion 71 Storage groove 72 Water-repellent layer 81 Joint portion 91 Chain tooth 92 Tooth portion 93 Storage groove 94 Neck 153165.doc -16- 201206362 95 96 97 Engagement head introduction Lead-in storage slot 153165.doc -17-